1048 files changed, 80800 insertions, 40935 deletions

diff --git a/lib/Makefile b/lib/Makefile
index cdb3f3f3dc..ea2827bef0 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -28,7 +28,7 @@ ERTS_APPLICATIONS = stdlib sasl kernel compiler
 ERLANG_APPLICATIONS = tools common_test runtime_tools inets parsetools
 
 # These are only build if -a is given to otp_build or make is used directly
-ALL_ERLANG_APPLICATIONS = xmerl edoc erl_docgen snmp otp_mibs erl_interface \
+ALL_ERLANG_APPLICATIONS = xmerl edoc erl_docgen snmp erl_interface \
 		  asn1 jinterface \
 	          wx debugger reltool \
 	          mnesia crypto os_mon syntax_tools \
@@ -58,10 +58,10 @@ else
       SUB_DIRECTORIES = hipe parsetools asn1/src
     else
       ifdef TERTIARY_BOOTSTRAP
-        SUB_DIRECTORIES = snmp sasl jinterface syntax_tools wx
+        SUB_DIRECTORIES = snmp sasl erl_interface jinterface syntax_tools wx
       else
         ifdef DOC_BOOTSTRAP
-          SUB_DIRECTORIES = xmerl edoc erl_docgen
+          SUB_DIRECTORIES = xmerl edoc erl_docgen public_key
         else # Not bootstrap build
           SUB_DIRECTORIES = $(ERTS_APPLICATIONS) \
 			    $(ERLANG_APPLICATIONS) \
diff --git a/lib/asn1/doc/src/asn1ct.xml b/lib/asn1/doc/src/asn1ct.xml
index ccf07a9cc1..e86dbd9f5e 100644
--- a/lib/asn1/doc/src/asn1ct.xml
+++ b/lib/asn1/doc/src/asn1ct.xml
@@ -32,7 +32,7 @@
     <rev>A</rev>
     <file>asn1.sgml</file>
   </header>
-  <module>asn1ct</module>
+  <module since="">asn1ct</module>
   <modulesummary>ASN.1 compiler and compile-time support functions</modulesummary>
   <description>
     <p>The ASN.1 compiler takes an ASN.1 module as input and generates a 
@@ -72,8 +72,8 @@
 
   <funcs>
     <func>
-      <name>compile(Asn1module) -> ok | {error, Reason}</name>
-      <name>compile(Asn1module, Options) -> ok | {error, Reason}</name>
+      <name since="">compile(Asn1module) -> ok | {error, Reason}</name>
+      <name since="">compile(Asn1module, Options) -> ok | {error, Reason}</name>
       <fsummary>Compiles an ASN.1 module and generates encode/decode functions according to encoding rules BER or PER.</fsummary>
       <type>
         <v>Asn1module = atom() | string()</v>
@@ -336,7 +336,7 @@ File3.asn</pre>
     </func>
 
     <func>
-      <name>value(Module, Type) -> {ok, Value} | {error, Reason}</name>
+      <name since="">value(Module, Type) -> {ok, Value} | {error, Reason}</name>
       <fsummary>Creates an ASN.1 value for test purposes.</fsummary>
       <type>
         <v>Module = Type = atom()</v>
@@ -361,9 +361,9 @@ File3.asn</pre>
     </func>
 
     <func>
-      <name>test(Module) -> ok | {error, Reason}</name>
-      <name>test(Module, Type | Options) -> ok | {error, Reason}</name>
-      <name>test(Module, Type, Value | Options) -> ok | {error, Reason}</name>
+      <name since="">test(Module) -> ok | {error, Reason}</name>
+      <name since="">test(Module, Type | Options) -> ok | {error, Reason}</name>
+      <name since="">test(Module, Type, Value | Options) -> ok | {error, Reason}</name>
       <fsummary>Performs a test of encode and decode for types in an ASN.1 module.</fsummary>
       <type>
         <v>Module = Type = atom()</v>
diff --git a/lib/asn1/src/asn1ct_check.erl b/lib/asn1/src/asn1ct_check.erl
index 321980e5e4..9eec05abd1 100644
--- a/lib/asn1/src/asn1ct_check.erl
+++ b/lib/asn1/src/asn1ct_check.erl
@@ -1710,7 +1710,7 @@ check_value(S,#valuedef{pos=Pos,name=Name,type=Type,
     {valueset,
      check_type(S,#typedef{pos=Pos,name=Name,typespec=NewType},NewType)};
 check_value(S, #valuedef{}=V) ->
-    ?dbg("check_value, V: ~p~n",[V0]),
+    ?dbg("check_value, V: ~p~n",[V]),
     case V of
 	#valuedef{checked=true} ->
 	    V;
@@ -1721,7 +1721,8 @@ check_value(S, #valuedef{}=V) ->
 check_valuedef(#state{recordtopname=TopName}=S0, V0) ->
     #valuedef{name=Name,type=Vtype0,value=Value,module=ModName} = V0,
     V = V0#valuedef{checked=true},
-    Vtype = check_type(S0, #typedef{name=Name,typespec=Vtype0},Vtype0),
+    Vtype1 = expand_valuedef_type(Vtype0),
+    Vtype = check_type(S0, #typedef{name=Name,typespec=Vtype1},Vtype1),
     Def = Vtype#type.def,
     S1 = S0#state{tname=Def},
     SVal = update_state(S1, ModName),
@@ -1767,6 +1768,27 @@ check_valuedef(#state{recordtopname=TopName}=S0, V0) ->
 	    V#valuedef{value=normalize_value(SVal, Vtype, Value, TopName)}
     end.
 
+expand_valuedef_type(#type{def=Seq}=Type)
+  when is_record(Seq,'SEQUENCE') ->
+    NewComponents = case Seq#'SEQUENCE'.components of
+                        {R1,_Ext,R2} -> R1 ++ R2;
+                        {Root,_Ext} -> Root;
+                        Root -> take_only_rootset(Root)
+                    end,
+    NewSeq = Seq#'SEQUENCE'{components = NewComponents},
+    Type#type{def=NewSeq};
+expand_valuedef_type(#type{def=Set}=Type)
+  when is_record(Set,'SET') ->
+    NewComponents = case Set#'SET'.components of
+                        {R1,_Ext,R2} -> R1 ++ R2;
+                        {Root,_Ext} -> Root;
+                        Root -> take_only_rootset(Root)
+                    end,
+    NewSet = Set#'SET'{components = NewComponents},
+    Type#type{def=NewSet};
+expand_valuedef_type(Type) ->
+    Type.
+
 is_contextswitchtype(#typedef{name='EXTERNAL'})->
     true;
 is_contextswitchtype(#typedef{name='EMBEDDED PDV'}) ->
@@ -1998,7 +2020,8 @@ normalize_value(S, Type, {'DEFAULT',Value}, NameList) ->
 	{'ENUMERATED',CType,_} ->
 	    normalize_enumerated(S,Value,CType);
 	{'CHOICE',CType,NewNameList} ->
-	    normalize_choice(S,Value,CType,NewNameList);
+	    ChoiceComponents = get_choice_components(S, {'CHOICE',CType}),
+	    normalize_choice(S,Value,ChoiceComponents,NewNameList);
 	{'SEQUENCE',CType,NewNameList} ->
 	    normalize_sequence(S,Value,CType,NewNameList);
 	{'SEQUENCE OF',CType,NewNameList} ->
@@ -2140,6 +2163,9 @@ normalize_octetstring(S, Value) ->
 		_ ->
 		    asn1_error(S, illegal_octet_string_value)
 	    end;
+        Val when is_binary(Val) ->
+            %% constant default value
+            Val;
 	_ ->
 	    asn1_error(S, illegal_octet_string_value)
     end.
@@ -2751,8 +2777,9 @@ check_type(S=#state{recordtopname=TopName},Type,Ts) when is_record(Ts,type) ->
 		TempNewDef#newt{type={'SEQUENCE OF',check_sequenceof(S,Type,Components)},
 				tag=
 				merge_tags(Tag,?TAG_CONSTRUCTED(?N_SEQUENCE))};
-	    {'CHOICE',Components} ->
+	    {'CHOICE',_} = Choice->
 		Ct = maybe_illicit_implicit_tag(S, choice, Tag),
+                Components = get_choice_components(S, Choice),
 		TempNewDef#newt{type={'CHOICE',check_choice(S,Type,Components)},tag=Ct};
 	    Set when is_record(Set,'SET') ->
 		RecordName=
@@ -5770,7 +5797,7 @@ format_error({missing_ocft,Component}) ->
 format_error(multiple_uniqs) ->
     "implementation limitation: only one UNIQUE field is allowed in CLASS";
 format_error({namelist_redefinition,Name}) ->
-    io_lib:format("the name '~s' can not be redefined", [Name]);
+    io_lib:format("the name '~s' cannot be redefined", [Name]);
 format_error({param_bad_type, Ref}) ->
     io_lib:format("'~p' is not a parameterized type", [Ref]);
 format_error(param_wrong_number_of_arguments) ->
diff --git a/lib/asn1/test/Makefile b/lib/asn1/test/Makefile
index c38d1c6ebd..6ff4aa8d0f 100644
--- a/lib/asn1/test/Makefile
+++ b/lib/asn1/test/Makefile
@@ -60,6 +60,7 @@ MODULES= \
 	testSeqOf \
 	testSeqOfIndefinite \
 	testSeqOfCho \
+	testSeqOfChoExt \
 	testSeqOfExternal \
 	testSeqOfTag \
 	testSetDefault \
@@ -72,6 +73,7 @@ MODULES= \
 	testSetTypeRefPrim \
 	testSetTypeRefSeq \
 	testSetTypeRefSet \
+	testDefaultOctetString \
 	testChoiceIndefinite \
 	testSetOf \
 	testSetOfCho \
diff --git a/lib/asn1/test/asn1_SUITE.erl b/lib/asn1/test/asn1_SUITE.erl
index ab78678110..a88e464996 100644
--- a/lib/asn1/test/asn1_SUITE.erl
+++ b/lib/asn1/test/asn1_SUITE.erl
@@ -99,6 +99,7 @@ groups() ->
        testChoTypeRefPrim,
        testChoTypeRefSeq,
        testChoTypeRefSet,
+       testDefaultOctetString,
        testMultipleLevels,
        testOpt,
        testSeqDefault,
@@ -118,6 +119,7 @@ groups() ->
        {group, [], [testSeqOf,
                     testSeqOfIndefinite]}, % Uses 'Mvrasn*'
        testSeqOfCho,
+       testSeqOfChoExt,
        testSetDefault,
        testExtensionAdditionGroup,
        testSetOptional,
@@ -430,6 +432,11 @@ testChoTypeRefSet(Config, Rule, Opts) ->
     asn1_test_lib:compile("ChoTypeRefSet", Config, [Rule|Opts]),
     testChoTypeRefSet:set(Rule).
 
+testDefaultOctetString(Config) -> test(Config, fun testDefaultOctetString/3).
+testDefaultOctetString(Config, Rule, Opts) ->
+    asn1_test_lib:compile("DefaultOctetString", Config, [Rule|Opts]),
+    testDefaultOctetString:dos(Rule).
+
 testMultipleLevels(Config) -> test(Config, fun testMultipleLevels/3).
 testMultipleLevels(Config, Rule, Opts) ->
     asn1_test_lib:compile("MultipleLevels", Config, [Rule|Opts]),
@@ -535,6 +542,11 @@ testSeqOfCho(Config, Rule, Opts) ->
     asn1_test_lib:compile("SeqOfCho", Config, [Rule|Opts]),
     testSeqOfCho:main(Rule).
 
+testSeqOfChoExt(Config) -> test(Config, fun testSeqOfChoExt/3).
+testSeqOfChoExt(Config, Rule, Opts) ->
+    asn1_test_lib:compile("SeqOfChoExt", Config, [Rule|Opts]),
+    testSeqOfChoExt:main(Rule).
+
 testSeqOfIndefinite(Config) ->
     test(Config, fun testSeqOfIndefinite/3, [ber]).
 testSeqOfIndefinite(Config, Rule, Opts) ->
diff --git a/lib/asn1/test/asn1_SUITE_data/ChoExtension.asn1 b/lib/asn1/test/asn1_SUITE_data/ChoExtension.asn1
index 18473bae30..c488704196 100644
--- a/lib/asn1/test/asn1_SUITE_data/ChoExtension.asn1
+++ b/lib/asn1/test/asn1_SUITE_data/ChoExtension.asn1
@@ -41,4 +41,6 @@ ChoExt4 ::= CHOICE
   str OCTET STRING
 }
 
+choExt1 ChoExt1 ::= int : 1
+
 END
diff --git a/lib/asn1/test/asn1_SUITE_data/DefaultOctetString.asn b/lib/asn1/test/asn1_SUITE_data/DefaultOctetString.asn
new file mode 100644
index 0000000000..076e965d58
--- /dev/null
+++ b/lib/asn1/test/asn1_SUITE_data/DefaultOctetString.asn
@@ -0,0 +1,15 @@
+DefaultOctetString
+DEFINITIONS
+AUTOMATIC TAGS
+ ::=
+BEGIN
+Dos ::= SEQUENCE {
+	opt [2] OCTET STRING (SIZE(2..4)) OPTIONAL,
+	def [10] OCTET STRING (SIZE (1)) DEFAULT '05'H
+}
+
+dos Dos ::= {
+	opt '1234'H
+}
+
+END
diff --git a/lib/asn1/test/asn1_SUITE_data/IN-CS-1-Datatypes.asn b/lib/asn1/test/asn1_SUITE_data/IN-CS-1-Datatypes.asn
index ff0361f5c5..fb092f3f9c 100644
--- a/lib/asn1/test/asn1_SUITE_data/IN-CS-1-Datatypes.asn
+++ b/lib/asn1/test/asn1_SUITE_data/IN-CS-1-Datatypes.asn
@@ -1152,7 +1152,7 @@ FilteringCriteria ::= CHOICE {
 

 --  In case calledAddressValue is specified, the numbers to be filtered are from calledAddressValue

 --  up to and including calledAddressValue + maximumNumberOfCounters-1.

---  The last two digits of calledAddressvalue can not exceed 100-maximumNumberOfCounters.

+--  The last two digits of calledAddressvalue cannot exceed 100-maximumNumberOfCounters.

 FilteringTimeOut ::= CHOICE {

   duration  [0]  Duration,

   stopTime  [1]  DateAndTime

diff --git a/lib/asn1/test/asn1_SUITE_data/SeqOfChoExt.asn1 b/lib/asn1/test/asn1_SUITE_data/SeqOfChoExt.asn1
new file mode 100644
index 0000000000..51077754fd
--- /dev/null
+++ b/lib/asn1/test/asn1_SUITE_data/SeqOfChoExt.asn1
@@ -0,0 +1,27 @@
+SeqOfChoExt DEFINITIONS AUTOMATIC TAGS EXTENSIBILITY IMPLIED ::=

+BEGIN

+

+Seq2 ::= SEQUENCE {

+	octstr [PRIVATE 6] OCTET STRING OPTIONAL

+}

+

+SeqOfCho ::= SEQUENCE OF CHOICE {

+	nullable	NULL,

+	seq2 Seq2

+}

+

+Seq1 ::= SEQUENCE {

+	int INTEGER,

+	soc SeqOfCho

+}

+

+seq1 Seq1 ::= {

+  int  10,

+  soc {

+    seq2 : {

+      octstr '01020A'H

+    }

+  }

+}

+

+END

diff --git a/lib/asn1/test/testChoExtension.erl b/lib/asn1/test/testChoExtension.erl
index 4c632aab81..cfb28be5c7 100644
--- a/lib/asn1/test/testChoExtension.erl
+++ b/lib/asn1/test/testChoExtension.erl
@@ -28,6 +28,7 @@
 extension(_Rules) ->
     roundtrip('ChoExt1', {bool,true}),
     roundtrip('ChoExt1', {int,33}),
+    {int, 1} = 'ChoExtension':choExt1(),
 
     %% A trick to encode with another compatible CHOICE type to test reception
     %% extension alternative
diff --git a/lib/asn1/test/testDefaultOctetString.erl b/lib/asn1/test/testDefaultOctetString.erl
new file mode 100644
index 0000000000..82cd5810e5
--- /dev/null
+++ b/lib/asn1/test/testDefaultOctetString.erl
@@ -0,0 +1,34 @@
+-module(testDefaultOctetString).
+
+-export([dos/1]).
+
+-include_lib("common_test/include/ct.hrl").
+
+-record('Dos', {
+  opt = asn1_NOVALUE,
+  def = asn1_DEFAULT
+}).
+
+-define(def_DEFAULT, <<5>>).
+
+dos(Rules) ->
+    %% test roundtrip default
+    E1 = roundtrip(#'Dos'{}, #'Dos'{def = ?def_DEFAULT}),
+    %% test the value dos defined in the .asn file
+    E2 = roundtrip('DefaultOctetString':dos()),
+    %% sanity test a fully specified SEQUENCE
+    E3 = roundtrip(#'Dos'{opt = <<1,2,3>>, def = <<6>>}),
+    %% test def is/isn't encoded according to the value
+    if Rules == ber ->
+            <<48, 0>> = E1,
+            <<48, 4, 16#82, 2, 16#12, 16#34>> = E2,
+            <<48, 8, 16#82, 3, 1, 2, 3, 16#8A, 1, 6>> = E3;
+       true ->
+            ignore
+    end,
+    ok.
+
+roundtrip(Value) ->
+    roundtrip(Value, Value).
+roundtrip(Value, Exp) ->
+    asn1_test_lib:roundtrip('DefaultOctetString', 'Dos', Value, Exp).
diff --git a/lib/asn1/test/testSeqOfChoExt.erl b/lib/asn1/test/testSeqOfChoExt.erl
new file mode 100644
index 0000000000..1e72c60841
--- /dev/null
+++ b/lib/asn1/test/testSeqOfChoExt.erl
@@ -0,0 +1,15 @@
+-module(testSeqOfChoExt).
+
+-export([main/1]).
+
+%-record('Seq2', { octstr = asn1_NOVALUE }).
+%-record('Seq1', { int, soc }).
+
+main(_Rules) ->
+    roundtrip('SeqOfChoExt':seq1()).
+
+roundtrip(Value) ->
+    roundtrip(Value, Value).
+roundtrip(Value, Exp) ->
+    Type = element(1,Value),
+    asn1_test_lib:roundtrip('SeqOfChoExt', Type, Value, Exp).
diff --git a/lib/common_test/doc/src/basics_chapter.xml b/lib/common_test/doc/src/basics_chapter.xml
index 95599ca1f1..899a52fa31 100644
--- a/lib/common_test/doc/src/basics_chapter.xml
+++ b/lib/common_test/doc/src/basics_chapter.xml
@@ -125,7 +125,7 @@
       The test case is the smallest unit that the <c>Common Test</c> test server deals with.
     </p>
     <p>
-      Subsets of test cases, called test case groups, can also be defined. A test case 
+      Sets of test cases, called test case groups, can also be defined. A test case
       group can have execution properties associated with it. Execution properties 
       specify if the test cases in the group are to be executed in
       random order, in parallel, or in sequence, and if the execution of the group 
diff --git a/lib/common_test/doc/src/common_test_app.xml b/lib/common_test/doc/src/common_test_app.xml
index a3b3f927eb..7887a2c3ea 100644
--- a/lib/common_test/doc/src/common_test_app.xml
+++ b/lib/common_test/doc/src/common_test_app.xml
@@ -32,7 +32,7 @@
     <rev>PA1</rev>
     <file>common_test_app.sgml</file>
   </header>
-  <module>common_test</module> 
+  <module since="">common_test</module> 
   <modulesummary>A framework for automated testing of any target nodes.</modulesummary>
 
   <description>
@@ -68,7 +68,7 @@
 
   <funcs>
     <func>
-      <name>Module:all() -> Tests | {skip,Reason} </name>
+      <name since="">Module:all() -> Tests | {skip,Reason} </name>
       <fsummary>Returns the list of all test case groups and test cases
 	in the module.</fsummary>
       <type>
@@ -115,7 +115,7 @@
     </func>
 
     <func>
-      <name>Module:groups() -> GroupDefs</name>
+      <name since="">Module:groups() -> GroupDefs</name>
       <fsummary>Returns a list of test case group definitions.</fsummary>
       <type>
         <v>GroupDefs = [Group]</v>
@@ -140,7 +140,7 @@
     </func>
 
       <func>
-	<name>Module:suite() -> [Info] </name>
+	<name since="">Module:suite() -> [Info] </name>
 	<fsummary>Test suite info function (providing default data
 	  for the suite).</fsummary>
 	<type>
@@ -213,7 +213,7 @@
     </func>
 
       <func>
-	<name>Module:init_per_suite(Config) -> NewConfig | {skip,Reason} |
+	<name since="">Module:init_per_suite(Config) -> NewConfig | {skip,Reason} |
 	  {skip_and_save,Reason,SaveConfig}</name>
 	<fsummary>Test suite initializations.</fsummary>
 	<type>
@@ -248,7 +248,7 @@
     </func>
 
     <func>
-      <name>Module:end_per_suite(Config) -> term() | 
+      <name since="">Module:end_per_suite(Config) -> term() | 
 	{save_config,SaveConfig}</name>
       <fsummary>Test suite finalization.</fsummary>
       <type>
@@ -272,7 +272,7 @@
     </func>
 
     <func>
-      <name>Module:group(GroupName) -> [Info] </name>
+      <name since="OTP R15B">Module:group(GroupName) -> [Info] </name>
       <fsummary>Test case group information function (providing default data
         for a test case group, that is, its test cases and
         subgroups).</fsummary>
@@ -352,7 +352,7 @@
     </func>
 
       <func>
-	<name>Module:init_per_group(GroupName, Config) -> NewConfig |
+	<name since="">Module:init_per_group(GroupName, Config) -> NewConfig |
 	  {skip,Reason}</name>
 	<fsummary>Test case group initializations.</fsummary>
 	<type>
@@ -390,7 +390,7 @@
     </func>
 
       <func>
-	<name>Module:end_per_group(GroupName, Config) -> term() |
+	<name since="">Module:end_per_group(GroupName, Config) -> term() |
 	  {return_group_result,Status}</name>
 	<fsummary>Test case group finalization.</fsummary>
 	<type>
@@ -424,7 +424,7 @@
     </func>
 
       <func>
-	<name>Module:init_per_testcase(TestCase, Config) -> NewConfig | {fail,Reason} | {skip,Reason}</name>
+	<name since="">Module:init_per_testcase(TestCase, Config) -> NewConfig | {fail,Reason} | {skip,Reason}</name>
 	<fsummary>Test case initializations.</fsummary>
 	<type>
 	  <v> TestCase = atom()</v>
@@ -454,7 +454,7 @@
     </func>
 
       <func>
-	<name>Module:end_per_testcase(TestCase, Config) -> term() | {fail,Reason} | {save_config,SaveConfig}</name>
+	<name since="">Module:end_per_testcase(TestCase, Config) -> term() | {fail,Reason} | {save_config,SaveConfig}</name>
 	<fsummary>Test case finalization.</fsummary>
 	<type>
 	  <v>TestCase = atom()</v>
@@ -486,7 +486,7 @@
       </func>
 
     <func>
-      <name>Module:Testcase() -> [Info] </name>
+      <name since="OTP R14B">Module:Testcase() -> [Info] </name>
       <fsummary>Test case information function.</fsummary>
       <type>
 	<v>Info = {timetrap,Time} | {require,Required} | {require,Name,Required} | {userdata,UserData} | {silent_connections,Conns}</v>
@@ -560,7 +560,7 @@
     </func>
 
     <func>
-	<name>Module:Testcase(Config) ->  term() | {skip,Reason} | {comment,Comment} | {save_config,SaveConfig} | {skip_and_save,Reason,SaveConfig} | exit() </name>
+	<name since="OTP R14B">Module:Testcase(Config) ->  term() | {skip,Reason} | {comment,Comment} | {save_config,SaveConfig} | {skip_and_save,Reason,SaveConfig} | exit() </name>
       <fsummary>A test case.</fsummary>
       <type>
 	<v>Config = SaveConfig = [{Key,Value}]</v>
diff --git a/lib/common_test/doc/src/ct.xml b/lib/common_test/doc/src/ct.xml
index c0380c4142..83c0ecb309 100644
--- a/lib/common_test/doc/src/ct.xml
+++ b/lib/common_test/doc/src/ct.xml
@@ -32,7 +32,7 @@
     <rev>A</rev>
     <file>ct.xml</file>
   </header>
-  <module>ct</module>
+  <module since="">ct</module>
   <modulesummary>Main user interface for the Common Test framework.</modulesummary>
 
   <description>
@@ -139,7 +139,7 @@
 
   <funcs>
     <func>
-      <name>abort_current_testcase(Reason) -&gt; ok | {error, ErrorReason}</name>
+      <name since="">abort_current_testcase(Reason) -&gt; ok | {error, ErrorReason}</name>
       <fsummary>Aborts the currently executing test case.</fsummary>
       <type>
         <v>Reason = term()</v>
@@ -157,7 +157,7 @@
     </func>
 
     <func>
-      <name>add_config(Callback, Config) -&gt; ok | {error, Reason}</name>
+      <name since="OTP R14B">add_config(Callback, Config) -&gt; ok | {error, Reason}</name>
       <fsummary>Loads configuration variables using the specified callback
         module and configuration string.</fsummary>
       <type>
@@ -176,7 +176,7 @@
     </func>
 
     <func>
-      <name>break(Comment) -&gt; ok | {error, Reason}</name>
+      <name since="OTP R15B02">break(Comment) -&gt; ok | {error, Reason}</name>
       <fsummary>Cancels any active timetrap and pause the execution of the
         current test case until the user calls function continue/0.</fsummary>
       <type>
@@ -206,7 +206,7 @@
     </func>
 
     <func>
-      <name>break(TestCase, Comment) -&gt; ok | {error, Reason}</name>
+      <name since="OTP R15B02">break(TestCase, Comment) -&gt; ok | {error, Reason}</name>
       <fsummary>Works the same way as break/1, only argument TestCase makes it
         possible to pause a test case executing in a parallel group.</fsummary>
       <type>
@@ -228,7 +228,7 @@
     </func>
 
     <func>
-      <name>capture_get() -&gt; ListOfStrings</name>
+      <name since="OTP R15B">capture_get() -&gt; ListOfStrings</name>
       <fsummary>Equivalent to capture_get([default]).</fsummary>
       <type>
         <v>ListOfStrings = [string()]</v>
@@ -240,7 +240,7 @@
     </func>
 
     <func>
-      <name>capture_get(ExclCategories) -&gt; ListOfStrings</name>
+      <name since="OTP R15B">capture_get(ExclCategories) -&gt; ListOfStrings</name>
       <fsummary>Returns and purges the list of text strings buffered during
         the latest session of capturing printouts to stdout.</fsummary>
       <type>
@@ -262,7 +262,7 @@
     </func>
 
     <func>
-      <name>capture_start() -&gt; ok</name>
+      <name since="OTP R15B">capture_start() -&gt; ok</name>
       <fsummary>Starts capturing all text strings printed to stdout
         during execution of the test case.</fsummary>
         <desc><marker id="capture_start-0"/>
@@ -276,7 +276,7 @@
     </func>
 
     <func>
-      <name>capture_stop() -&gt; ok</name>
+      <name since="OTP R15B">capture_stop() -&gt; ok</name>
       <fsummary>Stops capturing text strings (a session started with
         capture_start/0).</fsummary>
       <desc><marker id="capture_stop-0"/>
@@ -290,7 +290,7 @@
     </func>
 
     <func>
-      <name>comment(Comment) -&gt; ok</name>
+      <name since="">comment(Comment) -&gt; ok</name>
       <fsummary>Prints the specified Comment in the comment field in the
         table on the test suite result page.</fsummary>
       <type>
@@ -307,7 +307,7 @@
     </func>
 
     <func>
-      <name>comment(Format, Args) -&gt; ok</name>
+      <name since="OTP R15B">comment(Format, Args) -&gt; ok</name>
       <fsummary>Prints the formatted string in the comment field in the
         table on the test suite result page.</fsummary>
       <type>
@@ -326,7 +326,7 @@
     </func>
 
     <func>
-      <name>continue() -&gt; ok</name>
+      <name since="OTP R15B02">continue() -&gt; ok</name>
       <fsummary>This function must be called to continue after a test
         case (not executing in a parallel group) has called break/1.</fsummary>
       <desc><marker id="continue-0"/>
@@ -337,7 +337,7 @@
     </func>
 
     <func>
-      <name>continue(TestCase) -&gt; ok</name>
+      <name since="OTP R15B02">continue(TestCase) -&gt; ok</name>
       <fsummary>This function must be called to continue after a test case
         has called break/2.</fsummary>
       <type>
@@ -353,7 +353,7 @@
     </func>
 
     <func>
-      <name>decrypt_config_file(EncryptFileName, TargetFileName) -&gt; ok | {error, Reason}</name>
+      <name since="">decrypt_config_file(EncryptFileName, TargetFileName) -&gt; ok | {error, Reason}</name>
       <fsummary>Decrypts EncryptFileName, previously generated with
         encrypt_config_file/2,3.</fsummary>
       <type>
@@ -372,7 +372,7 @@
     </func>
 
     <func>
-      <name>decrypt_config_file(EncryptFileName, TargetFileName, KeyOrFile) -&gt; ok | {error, Reason}</name>
+      <name since="">decrypt_config_file(EncryptFileName, TargetFileName, KeyOrFile) -&gt; ok | {error, Reason}</name>
       <fsummary>Decrypts EncryptFileName, previously generated with
         encrypt_config_file/2,3.</fsummary>
       <type>
@@ -390,7 +390,7 @@
     </func>
 
     <func>
-      <name>encrypt_config_file(SrcFileName, EncryptFileName) -&gt; ok | {error, Reason}</name>
+      <name since="">encrypt_config_file(SrcFileName, EncryptFileName) -&gt; ok | {error, Reason}</name>
       <fsummary>Encrypts the source configuration file with DES3 and saves the
         result in file EncryptFileName.</fsummary>
       <type>
@@ -416,7 +416,7 @@
     </func>
 
     <func>
-      <name>encrypt_config_file(SrcFileName, EncryptFileName, KeyOrFile) -&gt; ok | {error, Reason}</name>
+      <name since="">encrypt_config_file(SrcFileName, EncryptFileName, KeyOrFile) -&gt; ok | {error, Reason}</name>
       <fsummary>Encrypts the source configuration file with DES3 and saves the
        result in the target file EncryptFileName.</fsummary>
       <type>
@@ -442,7 +442,7 @@
     </func>
 
     <func>
-      <name>fail(Reason) -&gt; ok</name>
+      <name since="">fail(Reason) -&gt; ok</name>
       <fsummary>Terminates a test case with the specified error
         Reason.</fsummary>
       <type>
@@ -454,7 +454,7 @@
     </func>
 
     <func>
-      <name>fail(Format, Args) -&gt; ok</name>
+      <name since="OTP R15B">fail(Format, Args) -&gt; ok</name>
       <fsummary>Terminates a test case with an error message specified by
         a format string and a list of values (used as arguments to
         io_lib:format/2).</fsummary>
@@ -470,7 +470,7 @@
     </func>
 
     <func>
-      <name>get_config(Required) -&gt; Value</name>
+      <name since="">get_config(Required) -&gt; Value</name>
       <fsummary>Equivalent to get_config(Required, undefined, []).</fsummary>
       <desc><marker id="get_config-1"/>
         <p>Equivalent to <seealso marker="#get_config-3"><c>ct:get_config(Required,
@@ -479,7 +479,7 @@
     </func>
 
     <func>
-      <name>get_config(Required, Default) -&gt; Value</name>
+      <name since="">get_config(Required, Default) -&gt; Value</name>
       <fsummary>Equivalent to get_config(Required, Default, []).</fsummary>
       <desc><marker id="get_config-2"/>
         <p>Equivalent to <seealso marker="#get_config-3"><c>ct:get_config(Required,
@@ -488,7 +488,7 @@
     </func>
 
     <func>
-      <name>get_config(Required, Default, Opts) -&gt; ValueOrElement</name>
+      <name since="">get_config(Required, Default, Opts) -&gt; ValueOrElement</name>
       <fsummary>Reads configuration data values.</fsummary>
       <type>
         <v>Required = KeyOrName | {KeyOrName, SubKey} | {KeyOrName, SubKey, SubKey}</v>
@@ -554,7 +554,7 @@
     </func>
 
     <func>
-      <name>get_event_mgr_ref() -&gt; EvMgrRef</name>
+      <name since="OTP 17.5">get_event_mgr_ref() -&gt; EvMgrRef</name>
       <fsummary>Gets a reference to the <c>Common Test</c> event manager.</fsummary>
         <type>
           <v>EvMgrRef = atom()</v>
@@ -572,7 +572,7 @@
     </func>
 
     <func>
-      <name>get_progname() -&gt; string()</name>
+      <name since="OTP 21.0">get_progname() -&gt; string()</name>
       <fsummary>Returns the command used to start this Erlang instance.</fsummary>
       <desc><marker id="get_progname-0"/>
         <p>Returns the command used to start this Erlang instance.
@@ -582,7 +582,7 @@
     </func>
 
     <func>
-      <name>get_status() -&gt; TestStatus | {error, Reason} | no_tests_running</name>
+      <name since="">get_status() -&gt; TestStatus | {error, Reason} | no_tests_running</name>
       <fsummary>Returns status of ongoing test.</fsummary>
       <type>
         <v>TestStatus = [StatusElem]</v>
@@ -608,7 +608,7 @@
     </func>
 
     <func>
-      <name>get_target_name(Handle) -&gt; {ok, TargetName} | {error, Reason}</name>
+      <name since="">get_target_name(Handle) -&gt; {ok, TargetName} | {error, Reason}</name>
       <fsummary>Returns the name of the target that the specified connection
         belongs to.</fsummary>
       <type>
@@ -622,7 +622,7 @@
     </func>
 
     <func>
-      <name>get_testspec_terms() -&gt; TestSpecTerms | undefined</name>
+      <name since="OTP 18.0">get_testspec_terms() -&gt; TestSpecTerms | undefined</name>
       <fsummary>Gets a list of all test specification terms used to
         configure and run this test.</fsummary>
       <type>
@@ -636,7 +636,7 @@
     </func>
 
     <func>
-      <name>get_testspec_terms(Tags) -&gt; TestSpecTerms | undefined</name>
+      <name since="OTP 18.0">get_testspec_terms(Tags) -&gt; TestSpecTerms | undefined</name>
       <fsummary>Reads one or more terms from the test specification used to
         configure and run this test.</fsummary>
       <type>
@@ -663,7 +663,7 @@
     </func>
 
     <func>
-      <name>get_timetrap_info() -&gt; {Time, {Scaling,ScaleVal}}</name>
+      <name since="OTP R15B">get_timetrap_info() -&gt; {Time, {Scaling,ScaleVal}}</name>
       <fsummary>Reads information about the timetrap set for the current
         test case.</fsummary>
       <type>
@@ -682,7 +682,7 @@
     </func>
 
     <func>
-      <name>get_verbosity(Category) -&gt; Level | undefined</name>
+      <name since="OTP 19.1">get_verbosity(Category) -&gt; Level | undefined</name>
       <fsummary>Read the verbosity level for a logging category.</fsummary>
       <type>
         <v>Category = default | atom()</v>
@@ -697,7 +697,7 @@
     </func>
 
     <func>
-      <name>install(Opts) -&gt; ok | {error, Reason}</name>
+      <name since="">install(Opts) -&gt; ok | {error, Reason}</name>
       <fsummary>Installs configuration files and event handlers.</fsummary>
       <type>
         <v>Opts = [Opt]</v>
@@ -724,7 +724,7 @@
     </func>
 
     <func>
-      <name>listenv(Telnet) -&gt; [Env]</name>
+      <name since="">listenv(Telnet) -&gt; [Env]</name>
       <fsummary>Performs command listenv on the specified Telnet connection
         and returns the result as a list of key-value pairs.</fsummary>
       <type>
@@ -740,7 +740,7 @@
     </func>
 
     <func>
-      <name>log(Format) -&gt; ok</name>
+      <name since="">log(Format) -&gt; ok</name>
       <fsummary>Equivalent to log(default, 50, Format, [], []).</fsummary>
       <desc><marker id="log-1"/>
         <p>Equivalent to
@@ -749,7 +749,7 @@
     </func>
 
     <func>
-      <name>log(X1, X2) -&gt; ok</name>
+      <name since="">log(X1, X2) -&gt; ok</name>
       <fsummary>Equivalent to log(Category, Importance, Format,
         FormatArgs, []).</fsummary>
       <type>
@@ -763,7 +763,7 @@
     </func>
 
     <func>
-      <name>log(X1, X2, X3) -&gt; ok</name>
+      <name since="">log(X1, X2, X3) -&gt; ok</name>
       <fsummary>Equivalent to log(Category, Importance, Format,
         FormatArgs, Opts).</fsummary>
       <type>
@@ -778,7 +778,7 @@
     </func>
 
     <func>
-      <name>log(X1, X2, X3, X4) -&gt; ok</name>
+      <name since="OTP R15B02">log(X1, X2, X3, X4) -&gt; ok</name>
       <fsummary>Equivalent to log(Category, Importance, Format,
         FormatArgs, Opts).</fsummary>
       <type>
@@ -794,7 +794,7 @@
     </func>
 
     <func>
-      <name>log(Category, Importance, Format, FormatArgs, Opts) -&gt; ok</name>
+      <name since="OTP 18.3">log(Category, Importance, Format, FormatArgs, Opts) -&gt; ok</name>
       <fsummary>Prints from a test case to the log file.</fsummary>
       <type>
         <v>Category = atom()</v>
@@ -825,7 +825,7 @@
     </func>
 
     <func>
-      <name>make_priv_dir() -&gt; ok | {error, Reason}</name>
+      <name since="OTP R15B01">make_priv_dir() -&gt; ok | {error, Reason}</name>
       <fsummary>If the test has been started with option create_priv_dir
         set to manual_per_tc, in order for the test case to use the private
         directory, it must first create it by calling this function.</fsummary>
@@ -841,7 +841,7 @@
     </func>
 
     <func>
-      <name>notify(Name, Data) -&gt; ok</name>
+      <name since="OTP R15B02">notify(Name, Data) -&gt; ok</name>
       <fsummary>Sends an asynchronous notification of type Name with Data
         to the <c>Common Test</c> event manager.</fsummary>
       <type>
@@ -859,7 +859,7 @@
     </func>
 
     <func>
-      <name>pal(Format) -&gt; ok</name>
+      <name since="">pal(Format) -&gt; ok</name>
       <fsummary>Equivalent to pal(default, 50, Format, [], []).</fsummary>
       <desc><marker id="pal-1"/>
         <p>Equivalent to
@@ -869,7 +869,7 @@
     </func>
 
     <func>
-      <name>pal(X1, X2) -&gt; ok</name>
+      <name since="">pal(X1, X2) -&gt; ok</name>
       <fsummary>Equivalent to pal(Category, Importance, Format,
         FormatArgs, []).</fsummary>
       <type>
@@ -883,7 +883,7 @@
     </func>
 
     <func>
-      <name>pal(X1, X2, X3) -&gt; ok</name>
+      <name since="">pal(X1, X2, X3) -&gt; ok</name>
       <fsummary>Equivalent to pal(Category, Importance, Format,
         FormatArgs, Opts).</fsummary>
       <type>
@@ -898,7 +898,7 @@
     </func>
 
     <func>
-      <name>pal(X1, X2, X3, X4) -&gt; ok</name>
+      <name since="OTP R15B02">pal(X1, X2, X3, X4) -&gt; ok</name>
       <fsummary>Equivalent to pal(Category, Importance, Format,
         FormatArgs, Opts).</fsummary>
       <type>
@@ -914,7 +914,7 @@
     </func>
 
     <func>
-      <name>pal(Category, Importance, Format, FormatArgs, Opts) -&gt; ok</name>
+      <name since="OTP 19.2">pal(Category, Importance, Format, FormatArgs, Opts) -&gt; ok</name>
       <fsummary>Prints and logs from a test case.</fsummary>
       <type>
         <v>Category = atom()</v>
@@ -945,7 +945,7 @@
     </func>
 
     <func>
-      <name>parse_table(Data) -&gt; {Heading, Table}</name>
+      <name since="">parse_table(Data) -&gt; {Heading, Table}</name>
       <fsummary>Parses the printout from an SQL table and returns a list of
         tuples.</fsummary>
       <type>
@@ -967,7 +967,7 @@
     </func>
 
     <func>
-      <name>print(Format) -&gt; ok</name>
+      <name since="">print(Format) -&gt; ok</name>
       <fsummary>Equivalent to print(default, 50, Format, [], []).</fsummary>
       <desc><marker id="print-1"/>
         <p>Equivalent to <seealso marker="#print-5"><c>ct:print(default,
@@ -976,7 +976,7 @@
     </func>
 
     <func>
-      <name>print(X1, X2) -&gt; ok</name>
+      <name since="OTP R15B02">print(X1, X2) -&gt; ok</name>
       <fsummary>Equivalent to print(Category, Importance, Format,
         FormatArgs, []).</fsummary>
       <type>
@@ -990,7 +990,7 @@
     </func>
 
     <func>
-      <name>print(X1, X2, X3) -&gt; ok</name>
+      <name since="">print(X1, X2, X3) -&gt; ok</name>
       <fsummary>Equivalent to print(Category, Importance, Format,
         FormatArgs, Opts).</fsummary>
       <type>
@@ -1005,7 +1005,7 @@
     </func>
 
     <func>
-      <name>print(X1, X2, X3, X4) -&gt; ok</name>
+      <name since="OTP R15B02">print(X1, X2, X3, X4) -&gt; ok</name>
       <fsummary>Equivalent to print(Category, Importance, Format,
         FormatArgs, Opts).</fsummary>
       <type>
@@ -1021,7 +1021,7 @@
     </func>
 
     <func>
-      <name>print(Category, Importance, Format, FormatArgs, Opts) -&gt; ok</name>
+      <name since="OTP 19.2">print(Category, Importance, Format, FormatArgs, Opts) -&gt; ok</name>
       <fsummary>Prints from a test case to the console.</fsummary>
       <type>
         <v>Category = atom()</v>
@@ -1048,7 +1048,7 @@
     </func>
 
     <func>
-      <name>reload_config(Required) -&gt; ValueOrElement | {error, Reason}</name>
+      <name since="OTP R14B">reload_config(Required) -&gt; ValueOrElement | {error, Reason}</name>
       <fsummary>Reloads configuration file containing specified configuration
         key.</fsummary>
       <type>
@@ -1071,7 +1071,7 @@
     </func>
 
      <func>
-      <name>remaining_test_procs() -&gt; {TestProcs,SharedGL,OtherGLs}</name>
+      <name since="OTP 20.2">remaining_test_procs() -&gt; {TestProcs,SharedGL,OtherGLs}</name>
       <fsummary>>This function will return the identity of test- and group
        leader processes that are still running at the time of this call.</fsummary>
       <type>
@@ -1107,7 +1107,7 @@
     </func>   
 
     <func>
-      <name>remove_config(Callback, Config) -&gt; ok</name>
+      <name since="OTP R14B">remove_config(Callback, Config) -&gt; ok</name>
       <fsummary>Removes configuration variables (together with
         their aliases) that were loaded with specified callback module and
         configuration string.</fsummary>
@@ -1124,7 +1124,7 @@
     </func>
 
     <func>
-      <name>require(Required) -&gt; ok | {error, Reason}</name>
+      <name since="">require(Required) -&gt; ok | {error, Reason}</name>
       <fsummary>Checks if the required configuration is available.</fsummary>
       <type>
         <v>Required = Key | {Key, SubKeys} | {Key, SubKey, SubKeys}</v>
@@ -1178,7 +1178,7 @@
     </func>
 
     <func>
-      <name>require(Name, Required) -&gt; ok | {error, Reason}</name>
+      <name since="">require(Name, Required) -&gt; ok | {error, Reason}</name>
       <fsummary>Checks if the required configuration is available and gives
         it a name.</fsummary>
       <type>
@@ -1237,7 +1237,7 @@
     </func>
 
     <func>
-      <name>run(TestDirs) -&gt; Result</name>
+      <name since="">run(TestDirs) -&gt; Result</name>
       <fsummary>Runs all test cases in all suites in the specified
         directories.</fsummary>
       <type>
@@ -1251,7 +1251,7 @@
     </func>
 
     <func>
-      <name>run(TestDir, Suite) -&gt; Result</name>
+      <name since="">run(TestDir, Suite) -&gt; Result</name>
       <fsummary>Runs all test cases in the specified suite.</fsummary>
       <desc><marker id="run-2"/>
         <p>Runs all test cases in the specified suite.</p>
@@ -1261,7 +1261,7 @@
     </func>
 
     <func>
-      <name>run(TestDir, Suite, Cases) -&gt; Result</name>
+      <name since="">run(TestDir, Suite, Cases) -&gt; Result</name>
       <fsummary>Runs the specified test cases.</fsummary>
       <type>
         <v>TestDir = string()</v>
@@ -1283,7 +1283,7 @@
     </func>
 
     <func>
-      <name>run_test(Opts) -&gt; Result</name>
+      <name since="">run_test(Opts) -&gt; Result</name>
       <fsummary>Runs tests as specified by the combination of options in
         Opts.</fsummary>
       <type>
@@ -1355,7 +1355,7 @@
     </func>
 
     <func>
-      <name>run_testspec(TestSpec) -&gt; Result</name>
+      <name since="">run_testspec(TestSpec) -&gt; Result</name>
       <fsummary>Runs a test specified by TestSpec.</fsummary>
       <type>
         <v>TestSpec = [term()]</v>
@@ -1375,7 +1375,7 @@
     </func>
 
     <func>
-      <name>set_verbosity(Category, Level) -&gt; ok</name>
+      <name since="OTP 19.1">set_verbosity(Category, Level) -&gt; ok</name>
       <fsummary>Set the verbosity level for a logging category.</fsummary>
       <type>
         <v>Category = default | atom()</v>
@@ -1390,7 +1390,7 @@
     </func>
 
     <func>
-      <name>sleep(Time) -&gt; ok</name>
+      <name since="OTP R14B">sleep(Time) -&gt; ok</name>
       <fsummary>This function, similar to timer:sleep/1, suspends the
         test case for a specified time.</fsummary>
       <type>
@@ -1412,7 +1412,7 @@
     </func>
 
     <func>
-      <name>start_interactive() -&gt; ok</name>
+      <name since="">start_interactive() -&gt; ok</name>
       <fsummary>Starts <c>Common Test</c> in interactive mode.</fsummary>
       <desc><marker id="start_interactive-0"/>
         <p>Starts <c>Common Test</c> in interactive mode.</p>
@@ -1440,7 +1440,7 @@
     </func>
 
     <func>
-      <name>step(TestDir, Suite, Case) -&gt; Result</name>
+      <name since="">step(TestDir, Suite, Case) -&gt; Result</name>
       <fsummary>Steps through a test case with the debugger.</fsummary>
       <type>
         <v>Case = atom()</v>
@@ -1453,7 +1453,7 @@
     </func>
 
     <func>
-      <name>step(TestDir, Suite, Case, Opts) -&gt; Result</name>
+      <name since="">step(TestDir, Suite, Case, Opts) -&gt; Result</name>
       <fsummary>Steps through a test case with the debugger.</fsummary>
       <type>
         <v>Case = atom()</v>
@@ -1470,7 +1470,7 @@
     </func>
 
     <func>
-      <name>stop_interactive() -&gt; ok</name>
+      <name since="">stop_interactive() -&gt; ok</name>
       <fsummary>Exits the interactive mode.</fsummary>
       <desc><marker id="stop_interactive-0"/>
         <p>Exits the interactive mode.</p>
@@ -1482,7 +1482,7 @@
     </func>
 
     <func>
-      <name>sync_notify(Name, Data) -&gt; ok</name>
+      <name since="OTP R15B02">sync_notify(Name, Data) -&gt; ok</name>
       <fsummary>Sends a synchronous notification of type Name with Data to
         the <c>Common Test</c> event manager.</fsummary>
       <type>
@@ -1501,7 +1501,7 @@
     </func>
 
     <func>
-      <name>testcases(TestDir, Suite) -&gt; Testcases | {error, Reason}</name>
+      <name since="">testcases(TestDir, Suite) -&gt; Testcases | {error, Reason}</name>
       <fsummary>Returns all test cases in the specified suite.</fsummary>
       <type>
         <v>TestDir = string()</v>
@@ -1515,7 +1515,7 @@
     </func>
 
     <func>
-      <name>timetrap(Time) -&gt; ok</name>
+      <name since="OTP R14B">timetrap(Time) -&gt; ok</name>
       <fsummary>Sets a new timetrap for the running test case.</fsummary>
       <type>
         <v>Time = {hours, Hours} | {minutes, Mins} | {seconds, Secs} | Millisecs | infinity | Func</v>
@@ -1539,7 +1539,7 @@
     </func>
 
     <func>
-      <name>userdata(TestDir, Suite) -&gt; SuiteUserData | {error, Reason}</name>
+      <name since="">userdata(TestDir, Suite) -&gt; SuiteUserData | {error, Reason}</name>
       <fsummary>Returns any data specified with tag userdata in the list of
         tuples returned from Suite:suite/0.</fsummary>
       <type>
@@ -1556,7 +1556,7 @@
     </func>
 
     <func>
-      <name>userdata(TestDir, Suite, Case::GroupOrCase) -&gt; TCUserData | {error, Reason}</name>
+      <name since="">userdata(TestDir, Suite, Case::GroupOrCase) -&gt; TCUserData | {error, Reason}</name>
       <fsummary>Returns any data specified with tag userdata in the list of
         tuples returned from Suite:group(GroupName) or Suite:Case().</fsummary>
       <type>
diff --git a/lib/common_test/doc/src/ct_cover.xml b/lib/common_test/doc/src/ct_cover.xml
index 89d944acbe..61365d3522 100644
--- a/lib/common_test/doc/src/ct_cover.xml
+++ b/lib/common_test/doc/src/ct_cover.xml
@@ -32,7 +32,7 @@
     <rev>A</rev>
     <file>ct_cover.xml</file>
   </header>
-  <module>ct_cover</module>
+  <module since="">ct_cover</module>
   <modulesummary>Common Test framework code coverage support module.
   </modulesummary>
 
@@ -47,7 +47,7 @@
 
   <funcs>
     <func>
-    <name>add_nodes(Nodes) -&gt; {ok, StartedNodes} | {error, Reason}</name>
+    <name since="">add_nodes(Nodes) -&gt; {ok, StartedNodes} | {error, Reason}</name>
     <fsummary>Adds nodes to current cover test (only works if cover support
       is active).</fsummary>
       <type>
@@ -67,7 +67,7 @@
     </func>
 
     <func>
-    <name>cross_cover_analyse(Level, Tests) -&gt; ok</name>
+    <name since="OTP R16B">cross_cover_analyse(Level, Tests) -&gt; ok</name>
     <fsummary>Accumulates cover results over multiple tests.</fsummary>
       <type>
         <v>Level = overview | details</v>
@@ -83,7 +83,7 @@
     </func>
 
     <func>
-    <name>remove_nodes(Nodes) -&gt; ok | {error, Reason}</name>
+    <name since="">remove_nodes(Nodes) -&gt; ok | {error, Reason}</name>
     <fsummary>Removes nodes from the current cover test.</fsummary>
       <type>
         <v>Nodes = [atom()]</v>
diff --git a/lib/common_test/doc/src/ct_ftp.xml b/lib/common_test/doc/src/ct_ftp.xml
index 592c5eb05d..7ee6049486 100644
--- a/lib/common_test/doc/src/ct_ftp.xml
+++ b/lib/common_test/doc/src/ct_ftp.xml
@@ -32,7 +32,7 @@
     <rev>A</rev>
     <file>ct_ftp.xml</file>
   </header>
-  <module>ct_ftp</module>
+  <module since="">ct_ftp</module>
   <modulesummary>FTP client module (based on the FTP application).</modulesummary>
 
   <description>
@@ -59,7 +59,7 @@
 
   <funcs>
     <func>
-      <name>cd(Connection, Dir) -&gt; ok | {error, Reason}</name>
+      <name since="">cd(Connection, Dir) -&gt; ok | {error, Reason}</name>
       <fsummary>Changes directory on remote host.</fsummary>
       <type>
         <v>Connection = connection()</v>
@@ -71,7 +71,7 @@
     </func>
 
     <func>
-      <name>close(Connection) -&gt; ok | {error, Reason}</name>
+      <name since="">close(Connection) -&gt; ok | {error, Reason}</name>
       <fsummary>Closes the FTP connection.</fsummary>
       <type>
         <v>Connection = connection()</v>
@@ -82,7 +82,7 @@
     </func>
 
     <func>
-      <name>delete(Connection, File) -&gt; ok | {error, Reason}</name>
+      <name since="">delete(Connection, File) -&gt; ok | {error, Reason}</name>
       <fsummary>Deletes a file on remote host.</fsummary>
       <type>
         <v>Connection = connection()</v>
@@ -94,7 +94,7 @@
     </func>
 
     <func>
-      <name>get(KeyOrName, RemoteFile, LocalFile) -&gt; ok | {error, Reason}</name>
+      <name since="">get(KeyOrName, RemoteFile, LocalFile) -&gt; ok | {error, Reason}</name>
       <fsummary>Opens an FTP connection and fetches a file from the remote
         host.</fsummary>
       <type>
@@ -122,7 +122,7 @@
     </func>
 
     <func>
-      <name>ls(Connection, Dir) -&gt; {ok, Listing} | {error, Reason}</name>
+      <name since="">ls(Connection, Dir) -&gt; {ok, Listing} | {error, Reason}</name>
       <fsummary>Lists directory Dir.</fsummary>
       <type>
         <v>Connection = connection()</v>
@@ -135,7 +135,7 @@
     </func>
 
     <func>
-      <name>open(KeyOrName) -&gt; {ok, Handle} | {error, Reason}</name>
+      <name since="">open(KeyOrName) -&gt; {ok, Handle} | {error, Reason}</name>
       <fsummary>Opens an FTP connection to the specified node.</fsummary>
       <type>
         <v>KeyOrName = Key | Name</v>
@@ -164,7 +164,7 @@
     </func>
 
     <func>
-      <name>put(KeyOrName, LocalFile, RemoteFile) -&gt; ok | {error, Reason}</name>
+      <name since="">put(KeyOrName, LocalFile, RemoteFile) -&gt; ok | {error, Reason}</name>
       <fsummary>Opens an FTP connection and sends a file to the remote
         host.</fsummary>
       <type>
@@ -203,7 +203,7 @@
     </func>
 
     <func>
-      <name>recv(Connection, RemoteFile) -&gt; ok | {error, Reason}</name>
+      <name since="">recv(Connection, RemoteFile) -&gt; ok | {error, Reason}</name>
       <fsummary>Fetches a file over FTP.</fsummary>
       <desc><marker id="recv-2"/>
         <p>Fetches a file over FTP.</p>
@@ -215,7 +215,7 @@
     </func>
 
     <func>
-      <name>recv(Connection, RemoteFile, LocalFile) -&gt; ok | {error, Reason}</name>
+      <name since="">recv(Connection, RemoteFile, LocalFile) -&gt; ok | {error, Reason}</name>
       <fsummary>Fetches a file over FTP.</fsummary>
       <type>
         <v>Connection = connection()</v>
@@ -230,7 +230,7 @@
     </func>
 
     <func>
-      <name>send(Connection, LocalFile) -&gt; ok | {error, Reason}</name>
+      <name since="">send(Connection, LocalFile) -&gt; ok | {error, Reason}</name>
       <fsummary>Sends a file over FTP.</fsummary>
       <desc><marker id="send-2"/>
         <p>Sends a file over FTP.</p>
@@ -243,7 +243,7 @@
     </func>
 
     <func>
-      <name>send(Connection, LocalFile, RemoteFile) -&gt; ok | {error, Reason}</name>
+      <name since="">send(Connection, LocalFile, RemoteFile) -&gt; ok | {error, Reason}</name>
       <fsummary>Sends a file over FTP.</fsummary>
       <type>
         <v>Connection = connection()</v>
@@ -258,7 +258,7 @@
     </func>
 
     <func>
-      <name>type(Connection, Type) -&gt; ok | {error, Reason}</name>
+      <name since="">type(Connection, Type) -&gt; ok | {error, Reason}</name>
       <fsummary>Changes the file transfer type.</fsummary>
       <type>
         <v>Connection = connection()</v>
diff --git a/lib/common_test/doc/src/ct_hooks.xml b/lib/common_test/doc/src/ct_hooks.xml
index 954be0ffba..ff0d0117cd 100644
--- a/lib/common_test/doc/src/ct_hooks.xml
+++ b/lib/common_test/doc/src/ct_hooks.xml
@@ -32,7 +32,7 @@
     <rev>PA1</rev>
     <file>ct_hooks.sgml</file>
   </header>
-  <module>ct_hooks</module> 
+  <module since="OTP R14B02">ct_hooks</module> 
   <modulesummary>A callback interface on top of Common Test.</modulesummary>
 
   <description>
@@ -75,7 +75,7 @@
   
   <funcs>
     <func>
-      <name>Module:init(Id, Opts) -&gt; {ok, State} | {ok, State, Priority}</name>
+      <name since="OTP R14B02">Module:init(Id, Opts) -&gt; {ok, State} | {ok, State, Priority}</name>
       <fsummary>Initiates the Common Test Hook.</fsummary>
       <type>
         <v>Id = reference() | term()</v>
@@ -109,7 +109,7 @@
     </func>
 
     <func>
-      <name>Module:pre_init_per_suite(SuiteName, InitData, CTHState) -&gt; Result</name>
+      <name since="OTP R14B02">Module:pre_init_per_suite(SuiteName, InitData, CTHState) -&gt; Result</name>
       <fsummary>Called before init_per_suite.</fsummary>
       <type>
         <v>SuiteName = atom()</v>
@@ -161,7 +161,7 @@
     </func>
 
     <func>
-      <name>Module:post_init_per_suite(SuiteName, Config, Return, CTHState) -&gt; Result</name>
+      <name since="OTP R14B02">Module:post_init_per_suite(SuiteName, Config, Return, CTHState) -&gt; Result</name>
       <fsummary>Called after init_per_suite.</fsummary>
       <type>
         <v>SuiteName = atom()</v>
@@ -208,7 +208,7 @@
     </func>
 
     <func>
-      <name>Module:pre_init_per_group(SuiteName, GroupName, InitData, CTHState) -&gt; Result</name>
+      <name since="OTP 19.3">Module:pre_init_per_group(SuiteName, GroupName, InitData, CTHState) -&gt; Result</name>
       <fsummary>Called before init_per_group.</fsummary>
       <type>
         <v>SuiteName = atom()</v>
@@ -241,7 +241,7 @@
     </func>
 
     <func>
-      <name>Module:post_init_per_group(SuiteName, GroupName, Config, Return, CTHState) -&gt; Result</name>
+      <name since="OTP 19.3">Module:post_init_per_group(SuiteName, GroupName, Config, Return, CTHState) -&gt; Result</name>
       <fsummary>Called after init_per_group.</fsummary>
       <type>
         <v>SuiteName = atom()</v>
@@ -274,7 +274,7 @@
     </func>
 
     <func>
-      <name>Module:pre_init_per_testcase(SuiteName, TestcaseName, InitData, CTHState) -&gt; Result</name>
+      <name since="OTP 19.3">Module:pre_init_per_testcase(SuiteName, TestcaseName, InitData, CTHState) -&gt; Result</name>
       <fsummary>Called before init_per_testcase.</fsummary>
       <type>
         <v>SuiteName = atom()</v>
@@ -311,7 +311,7 @@
     </func>
 
     <func>
-      <name>Module:post_init_per_testcase(SuiteName, TestcaseName, Config, Return, CTHState) -&gt; Result</name>
+      <name since="OTP 19.3">Module:post_init_per_testcase(SuiteName, TestcaseName, Config, Return, CTHState) -&gt; Result</name>
       <fsummary>Called after init_per_testcase.</fsummary>
       <type>
         <v>SuiteName = atom()</v>
@@ -344,7 +344,7 @@
     </func>
 
     <func>
-      <name>Module:pre_end_per_testcase(SuiteName, TestcaseName, EndData, CTHState) -&gt; Result</name>
+      <name since="OTP 19.3">Module:pre_end_per_testcase(SuiteName, TestcaseName, EndData, CTHState) -&gt; Result</name>
       <fsummary>Called before end_per_testcase.</fsummary>
       <type>
         <v>SuiteName = atom()</v>
@@ -368,7 +368,7 @@
           <seealso marker="common_test#Module:end_per_testcase-2"><c>end_per_testcase</c></seealso>
           instead.</p>
 
-        <p>This function can not change the result of the test case by returning skip or fail
+        <p>This function cannot change the result of the test case by returning skip or fail
 	tuples, but it may insert items in <c>Config</c> that can be read in
 	<c>end_per_testcase/2</c> or in <c>post_end_per_testcase/5</c>.</p>
 
@@ -380,7 +380,7 @@
     </func>
 
     <func>
-      <name>Module:post_end_per_testcase(SuiteName, TestcaseName, Config, Return, CTHState) -&gt; Result</name>
+      <name since="OTP 19.3">Module:post_end_per_testcase(SuiteName, TestcaseName, Config, Return, CTHState) -&gt; Result</name>
       <fsummary>Called after end_per_testcase.</fsummary>
       <type>
         <v>SuiteName = atom()</v>
@@ -413,7 +413,7 @@
     </func>
 
     <func>
-      <name>Module:pre_end_per_group(SuiteName, GroupName, EndData, CTHState) -&gt; Result</name>
+      <name since="OTP 19.3">Module:pre_end_per_group(SuiteName, GroupName, EndData, CTHState) -&gt; Result</name>
       <fsummary>Called before end_per_group.</fsummary>
       <type>
         <v>SuiteName = atom()</v>
@@ -446,7 +446,7 @@
     </func>
 
     <func>
-      <name>Module:post_end_per_group(SuiteName, GroupName, Config, Return, CTHState) -&gt; Result</name>
+      <name since="OTP 19.3">Module:post_end_per_group(SuiteName, GroupName, Config, Return, CTHState) -&gt; Result</name>
       <fsummary>Called after end_per_group.</fsummary>
       <type>
         <v>SuiteName = atom()</v>
@@ -479,7 +479,7 @@
     </func>
 
     <func>
-      <name>Module:pre_end_per_suite(SuiteName, EndData, CTHState) -&gt; Result</name>
+      <name since="OTP R14B02">Module:pre_end_per_suite(SuiteName, EndData, CTHState) -&gt; Result</name>
       <fsummary>Called before end_per_suite.</fsummary>
       <type>
         <v>SuiteName = atom()</v>
@@ -506,7 +506,7 @@
     </func>
 
     <func>
-      <name>Module:post_end_per_suite(SuiteName, Config, Return, CTHState) -&gt; Result</name>
+      <name since="OTP R14B02">Module:post_end_per_suite(SuiteName, Config, Return, CTHState) -&gt; Result</name>
       <fsummary>Called after end_per_suite.</fsummary>
       <type>
         <v>SuiteName = atom()</v>
@@ -533,7 +533,7 @@
     </func>
 
     <func>
-      <name>Module:on_tc_fail(SuiteName, TestName, Reason, CTHState) -&gt; NewCTHState</name>
+      <name since="OTP 19.3">Module:on_tc_fail(SuiteName, TestName, Reason, CTHState) -&gt; NewCTHState</name>
       <fsummary>Called after the CTH scope ends.</fsummary>
       <type>
         <v>SuiteName = atom()</v>
@@ -577,7 +577,7 @@
     </func>
 
     <func>
-      <name>Module:on_tc_skip(SuiteName, TestName, Reason, CTHState) -&gt; NewCTHState</name>
+      <name since="OTP 19.3">Module:on_tc_skip(SuiteName, TestName, Reason, CTHState) -&gt; NewCTHState</name>
       <fsummary>Called after the CTH scope ends.</fsummary>
       <type>
         <v>SuiteName = atom()</v>
@@ -623,7 +623,7 @@
     </func>
 
     <func>
-      <name>Module:terminate(CTHState)</name>
+      <name since="OTP R14B02">Module:terminate(CTHState)</name>
       <fsummary>Called after the CTH scope ends.</fsummary>
       <type>
         <v>CTHState = term()</v>
@@ -637,7 +637,7 @@
     </func>
 
     <func>
-      <name>Module:id(Opts) -&gt; Id</name>
+      <name since="OTP R14B02">Module:id(Opts) -&gt; Id</name>
       <fsummary>Called before the init function of a CTH.</fsummary>
       <type>
         <v>Opts = term()</v>
diff --git a/lib/common_test/doc/src/ct_master.xml b/lib/common_test/doc/src/ct_master.xml
index 6bde4644c6..f003b7de11 100644
--- a/lib/common_test/doc/src/ct_master.xml
+++ b/lib/common_test/doc/src/ct_master.xml
@@ -32,7 +32,7 @@
     <rev>A</rev>
     <file>ct_master.xml</file>
   </header>
-  <module>ct_master</module>
+  <module since="">ct_master</module>
   <modulesummary>Distributed test execution control for Common Test.</modulesummary>
 
 <description>
@@ -46,7 +46,7 @@
 
   <funcs>
     <func>
-      <name>abort() -&gt; ok</name>
+      <name since="">abort() -&gt; ok</name>
       <fsummary>Stops all running tests.</fsummary>
       <desc><marker id="abort-0"/>
         <p>Stops all running tests.</p>
@@ -54,7 +54,7 @@
     </func>
 
     <func>
-      <name>abort(Nodes) -&gt; ok</name>
+      <name since="">abort(Nodes) -&gt; ok</name>
       <fsummary>Stops tests on specified nodes.</fsummary>
       <type>
         <v>Nodes = atom() | [atom()]</v>
@@ -65,7 +65,7 @@
     </func>
 
     <func>
-      <name>basic_html(Bool) -&gt; ok</name>
+      <name since="OTP R15B01">basic_html(Bool) -&gt; ok</name>
       <fsummary>If set to true, the ct_master logs are written on a primitive
         HTML format, not using the <c>Common Test</c> CSS style sheet.</fsummary>
       <type>
@@ -79,7 +79,7 @@
     </func>
 
     <func>
-      <name>get_event_mgr_ref() -&gt; MasterEvMgrRef</name>
+      <name since="OTP 17.5">get_event_mgr_ref() -&gt; MasterEvMgrRef</name>
       <fsummary>Gets a reference to the <c>Common Test</c> master event
         manager.</fsummary>
       <type>
@@ -98,7 +98,7 @@
     </func>
 
     <func>
-      <name>progress() -&gt; [{Node, Status}]</name>
+      <name since="">progress() -&gt; [{Node, Status}]</name>
       <fsummary>Returns test progress.</fsummary>
       <type>
         <v>Node = atom()</v>
@@ -112,7 +112,7 @@
     </func>
 
     <func>
-      <name>run(TestSpecs) -&gt; ok</name>
+      <name since="">run(TestSpecs) -&gt; ok</name>
       <fsummary>Equivalent to run(TestSpecs, false, [], []).</fsummary>
       <type>
         <v>TestSpecs = string() | [SeparateOrMerged]</v>
@@ -124,7 +124,7 @@
     </func>
 
     <func>
-      <name>run(TestSpecs, InclNodes, ExclNodes) -&gt; ok</name>
+      <name since="">run(TestSpecs, InclNodes, ExclNodes) -&gt; ok</name>
       <fsummary>Equivalent to run(TestSpecs, false, InclNodes, ExclNodes).
       </fsummary>
       <type>
@@ -140,7 +140,7 @@
      </func>
 
      <func>
-       <name>run(TestSpecs, AllowUserTerms, InclNodes, ExclNodes) -&gt; ok</name>
+       <name since="">run(TestSpecs, AllowUserTerms, InclNodes, ExclNodes) -&gt; ok</name>
        <fsummary>Tests are spawned on the nodes as specified in TestSpecs.
        </fsummary>
        <type>
@@ -162,7 +162,7 @@
     </func>
 
     <func>
-      <name>run_on_node(TestSpecs, Node) -&gt; ok</name>
+      <name since="">run_on_node(TestSpecs, Node) -&gt; ok</name>
       <fsummary>Equivalent to run_on_node(TestSpecs, false, Node).</fsummary>
       <type>
         <v>TestSpecs = string() | [SeparateOrMerged]</v>
@@ -177,7 +177,7 @@
     </func>
 
     <func>
-      <name>run_on_node(TestSpecs, AllowUserTerms, Node) -&gt; ok</name>
+      <name since="">run_on_node(TestSpecs, AllowUserTerms, Node) -&gt; ok</name>
       <fsummary>Tests are spawned on Node according to TestSpecs.</fsummary>
       <type>
         <v>TestSpecs = string() | [SeparateOrMerged]</v>
@@ -191,7 +191,7 @@
     </func>
 
     <func>
-      <name>run_test(Node, Opts) -&gt; ok</name>
+      <name since="">run_test(Node, Opts) -&gt; ok</name>
       <fsummary>Tests are spawned on Node using ct:run_test/1.</fsummary>
       <type>
         <v>Node = atom()</v>
@@ -210,7 +210,7 @@
       </type>
       <desc><marker id="run_test-2"/>
         <p>Tests are spawned on <c>Node</c> using
-          <seealso marker="ct:run_test-1"><c>ct:run_test/1</c></seealso></p>
+          <seealso marker="ct#run_test-1"><c>ct:run_test/1</c></seealso></p>
       </desc>
     </func>
   </funcs>
diff --git a/lib/common_test/doc/src/ct_netconfc.xml b/lib/common_test/doc/src/ct_netconfc.xml
index 7ec8f23073..8fbe5f3df6 100644
--- a/lib/common_test/doc/src/ct_netconfc.xml
+++ b/lib/common_test/doc/src/ct_netconfc.xml
@@ -32,7 +32,7 @@
     <rev>A</rev>
     <file>ct_netconfc.xml</file>
   </header>
-  <module>ct_netconfc</module>
+  <module since="OTP R15B02">ct_netconfc</module>
   <modulesummary>NETCONF client module.</modulesummary>
 
   <description>
@@ -312,8 +312,8 @@
 
   <funcs>
     <func>
-      <name name="action" arity="2"/>
-      <name name="action" arity="3"/>
+      <name name="action" arity="2" since="OTP R15B02"/>
+      <name name="action" arity="3" since="OTP R15B02"/>
       <fsummary>Executes an action.</fsummary>
       <desc>
         <p>Executes an action. If the return type is void, <c>ok</c> is
@@ -322,8 +322,8 @@
     </func>
 
     <func>
-      <name name="close_session" arity="1"/>
-      <name name="close_session" arity="2"/>
+      <name name="close_session" arity="1" since="OTP R15B02"/>
+      <name name="close_session" arity="2" since="OTP R15B02"/>
       <fsummary>Requests graceful termination of the session associated with
         the client.</fsummary>
       <desc>
@@ -339,7 +339,7 @@
     </func>
 
     <func>
-      <name name="connect" arity="1"/>
+      <name name="connect" arity="1" since="OTP 20.0"/>
       <fsummary>Opens an SSH connection to a NETCONF server.</fsummary>
       <desc>
         <p>Opens an SSH connection to a NETCONF server.</p>
@@ -361,7 +361,7 @@
     </func>
 
     <func>
-      <name name="connect" arity="2"/>
+      <name name="connect" arity="2" since="OTP 20.0"/>
       <fsummary>Opens an SSH connection to a named NETCONF server.</fsummary>
       <desc>
         <p>Open an SSH connection to a named NETCONF server.</p>
@@ -399,8 +399,8 @@
     </func>
 
     <func>
-      <name name="copy_config" arity="3"/>
-      <name name="copy_config" arity="4"/>
+      <name name="copy_config" arity="3" since="OTP R15B02"/>
+      <name name="copy_config" arity="4" since="OTP R15B02"/>
       <fsummary>Copies configuration data.</fsummary>
       <desc>
         <p>Copies configuration data.</p>
@@ -412,12 +412,12 @@
     </func>
 
     <func>
-      <name>create_subscription(Client) -> Result</name>
-      <name>create_subscription(Client, Stream) -> Result</name>
-      <name>create_subscription(Client, Stream, Filter) -> Result</name>
-      <name>create_subscription(Client, Stream, Filter, Timeout) -> Result</name>
-      <name name="create_subscription" arity="5" clause_i="2"/>
-      <name name="create_subscription" arity="6"/>
+      <name since="OTP R15B02">create_subscription(Client) -> Result</name>
+      <name since="OTP R15B02">create_subscription(Client, Stream) -> Result</name>
+      <name since="OTP R15B02">create_subscription(Client, Stream, Filter) -> Result</name>
+      <name since="OTP R15B02">create_subscription(Client, Stream, Filter, Timeout) -> Result</name>
+      <name name="create_subscription" arity="5" clause_i="2" since="OTP R15B02"/>
+      <name name="create_subscription" arity="6" since="OTP R15B02"/>
       <fsummary>Creates a subscription for event notifications.</fsummary>
       <desc>
         <p>Creates a subscription for event notifications.</p>
@@ -490,8 +490,8 @@ create_subscription(Client, Stream, Filter, StartTime, StopTime, Timeout)</pre>
     </func>
 
     <func>
-      <name name="delete_config" arity="2"/>
-      <name name="delete_config" arity="3"/>
+      <name name="delete_config" arity="2" since="OTP R15B02"/>
+      <name name="delete_config" arity="3" since="OTP R15B02"/>
       <fsummary>Deletes configuration data.</fsummary>
       <desc>
         <p>Deletes configuration data.</p>
@@ -502,7 +502,7 @@ create_subscription(Client, Stream, Filter, StartTime, StopTime, Timeout)</pre>
     </func>
 
      <func>
-      <name name="disconnect" arity="1"/>
+      <name name="disconnect" arity="1" since="OTP 20.0"/>
       <fsummary>Closes the given SSH connection.</fsummary>
       <desc>
 	<p>Closes the given SSH connection.</p>
@@ -514,10 +514,10 @@ create_subscription(Client, Stream, Filter, StartTime, StopTime, Timeout)</pre>
     </func>
 
     <func>
-      <name name="edit_config" arity="3"/>
-      <name name="edit_config" arity="4" clause_i="1"/>
-      <name name="edit_config" arity="4" clause_i="2"/>
-      <name name="edit_config" arity="5"/>
+      <name name="edit_config" arity="3" since="OTP R15B02"/>
+      <name name="edit_config" arity="4" clause_i="1" since="OTP 18.0"/>
+      <name name="edit_config" arity="4" clause_i="2" since="OTP R15B02"/>
+      <name name="edit_config" arity="5" since="OTP 18.0"/>
       <fsummary>Edits configuration data.</fsummary>
       <desc>
         <p>Edits configuration data.</p>
@@ -542,8 +542,8 @@ create_subscription(Client, Stream, Filter, StartTime, StopTime, Timeout)</pre>
     </func>
 
     <func>
-      <name name="get" arity="2"/>
-      <name name="get" arity="3"/>
+      <name name="get" arity="2" since="OTP R15B02"/>
+      <name name="get" arity="3" since="OTP R15B02"/>
       <fsummary>Gets data.</fsummary>
       <desc>
         <p>Gets data.</p>
@@ -557,8 +557,8 @@ create_subscription(Client, Stream, Filter, StartTime, StopTime, Timeout)</pre>
     </func>
 
     <func>
-      <name name="get_capabilities" arity="1"/>
-      <name name="get_capabilities" arity="2"/>
+      <name name="get_capabilities" arity="1" since="OTP R15B02"/>
+      <name name="get_capabilities" arity="2" since="OTP R15B02"/>
       <fsummary>Returns the server side capabilities.</fsummary>
       <desc>
         <p>Returns the server side capabilities.</p>
@@ -582,8 +582,8 @@ create_subscription(Client, Stream, Filter, StartTime, StopTime, Timeout)</pre>
     </func>
 
     <func>
-      <name name="get_config" arity="3"/>
-      <name name="get_config" arity="4"/>
+      <name name="get_config" arity="3" since="OTP R15B02"/>
+      <name name="get_config" arity="4" since="OTP R15B02"/>
       <fsummary>Gets configuration data.</fsummary>
       <desc>
         <p>Gets configuration data.</p>
@@ -597,10 +597,10 @@ create_subscription(Client, Stream, Filter, StartTime, StopTime, Timeout)</pre>
     </func>
 
     <func>
-      <name name="get_event_streams" arity="1"/>
-      <name name="get_event_streams" arity="2" clause_i="1"/>
-      <name name="get_event_streams" arity="2" clause_i="2"/>
-      <name name="get_event_streams" arity="3"/>
+      <name name="get_event_streams" arity="1" since="OTP 20.0"/>
+      <name name="get_event_streams" arity="2" clause_i="1" since="OTP R15B02"/>
+      <name name="get_event_streams" arity="2" clause_i="2" since="OTP 20.0"/>
+      <name name="get_event_streams" arity="3" since="OTP R15B02"/>
       <fsummary>Sends a request to get the specified event streams.</fsummary>
       <desc>
         <p>Sends a request to get the specified event streams.</p>
@@ -637,8 +637,8 @@ create_subscription(Client, Stream, Filter, StartTime, StopTime, Timeout)</pre>
     </func>
 
     <func>
-      <name name="get_session_id" arity="1"/>
-      <name name="get_session_id" arity="2"/>
+      <name name="get_session_id" arity="1" since="OTP R15B02"/>
+      <name name="get_session_id" arity="2" since="OTP R15B02"/>
       <fsummary>Returns the session Id associated with the specified
         client.</fsummary>
       <desc>
@@ -647,9 +647,9 @@ create_subscription(Client, Stream, Filter, StartTime, StopTime, Timeout)</pre>
     </func>
 
     <func>
-      <name name="hello" arity="1"/>
-      <name name="hello" arity="2"/>
-      <name name="hello" arity="3"/>
+      <name name="hello" arity="1" since="OTP R15B02"/>
+      <name name="hello" arity="2" since="OTP R15B02"/>
+      <name name="hello" arity="3" since="OTP 17.5.3"/>
       <fsummary>Exchanges hello messages with the server.</fsummary>
       <desc>
         <p>Exchanges <c>hello</c> messages with the server.</p>
@@ -660,8 +660,8 @@ create_subscription(Client, Stream, Filter, StartTime, StopTime, Timeout)</pre>
     </func>
 
     <func>
-      <name name="kill_session" arity="2"/>
-      <name name="kill_session" arity="3"/>
+      <name name="kill_session" arity="2" since="OTP R15B02"/>
+      <name name="kill_session" arity="3" since="OTP R15B02"/>
       <fsummary>Forces termination of the session associated with the supplied
         session Id.</fsummary>
       <desc>
@@ -682,8 +682,8 @@ create_subscription(Client, Stream, Filter, StartTime, StopTime, Timeout)</pre>
     </func>
 
     <func>
-      <name name="lock" arity="2"/>
-      <name name="lock" arity="3"/>
+      <name name="lock" arity="2" since="OTP R15B02"/>
+      <name name="lock" arity="3" since="OTP R15B02"/>
       <fsummary>Locks the configuration target.</fsummary>
       <desc>
         <p>Locks the configuration target.</p>
@@ -703,7 +703,7 @@ create_subscription(Client, Stream, Filter, StartTime, StopTime, Timeout)</pre>
     </func>
 
     <func>
-      <name name="only_open" arity="1"/>
+      <name name="only_open" arity="1" since="OTP R15B02"/>
       <fsummary>Opens a NETCONF session, but does not send hello.</fsummary>
       <desc>
         <p>Opens a NETCONF session, but does not send <c>hello</c>.</p>
@@ -714,7 +714,7 @@ create_subscription(Client, Stream, Filter, StartTime, StopTime, Timeout)</pre>
     </func>
 
     <func>
-      <name name="only_open" arity="2"/>
+      <name name="only_open" arity="2" since="OTP R15B02"/>
       <fsummary>Opens a named NETCONF session, but does not send hello.</fsummary>
       <desc>
         <p>Opens a named NETCONF session, but does not send <c>hello</c>.</p>
@@ -725,7 +725,7 @@ create_subscription(Client, Stream, Filter, StartTime, StopTime, Timeout)</pre>
     </func>
 
     <func>
-      <name name="open" arity="1"/>
+      <name name="open" arity="1" since="OTP R15B02"/>
       <fsummary>Opens a NETCONF session and exchanges hello messages.</fsummary>
       <desc>
         <p>Opens a NETCONF session and exchanges <c>hello</c> messages.</p>
@@ -749,7 +749,7 @@ create_subscription(Client, Stream, Filter, StartTime, StopTime, Timeout)</pre>
     </func>
 
     <func>
-      <name name="open" arity="2"/>
+      <name name="open" arity="2" since="OTP R15B02"/>
       <fsummary>Opens a named NETCONF session and exchanges hello
         messages.</fsummary>
       <desc>
@@ -791,8 +791,8 @@ create_subscription(Client, Stream, Filter, StartTime, StopTime, Timeout)</pre>
     </func>
 
     <func>
-      <name name="send" arity="2"/>
-      <name name="send" arity="3"/>
+      <name name="send" arity="2" since="OTP R16B02"/>
+      <name name="send" arity="3" since="OTP R16B02"/>
       <fsummary>Sends an XML document to the server.</fsummary>
       <desc>
         <p>Sends an XML document to the server.</p>
@@ -804,8 +804,8 @@ create_subscription(Client, Stream, Filter, StartTime, StopTime, Timeout)</pre>
     </func>
 
     <func>
-      <name name="send_rpc" arity="2"/>
-      <name name="send_rpc" arity="3"/>
+      <name name="send_rpc" arity="2" since="OTP R16B02"/>
+      <name name="send_rpc" arity="3" since="OTP R16B02"/>
       <fsummary>Sends a NETCONF rpc request to the server.</fsummary>
       <desc>
         <p>Sends a NETCONF <c>rpc</c> request to the server.</p>
@@ -820,10 +820,10 @@ create_subscription(Client, Stream, Filter, StartTime, StopTime, Timeout)</pre>
     </func>
 
     <func>
-      <name name="session" arity="1"/>
-      <name name="session" arity="2" clause_i="1"/>
-      <name name="session" arity="2" clause_i="2"/>
-      <name name="session" arity="3"/>
+      <name name="session" arity="1" since="OTP 20.0"/>
+      <name name="session" arity="2" clause_i="1" since="OTP 20.0"/>
+      <name name="session" arity="2" clause_i="2" since="OTP 20.0"/>
+      <name name="session" arity="3" since="OTP 20.0"/>
       <fsummary>Opens a NETCONF session as a channel on the given SSH
 	connection, and exchanges hello messages with the
 	server.</fsummary>
@@ -848,8 +848,8 @@ create_subscription(Client, Stream, Filter, StartTime, StopTime, Timeout)</pre>
     </func>
 
     <func>
-      <name name="unlock" arity="2"/>
-      <name name="unlock" arity="3"/>
+      <name name="unlock" arity="2" since="OTP R15B02"/>
+      <name name="unlock" arity="3" since="OTP R15B02"/>
       <fsummary>Unlocks the configuration target.</fsummary>
       <desc>
         <p>Unlocks the configuration target.</p>
diff --git a/lib/common_test/doc/src/ct_property_test.xml b/lib/common_test/doc/src/ct_property_test.xml
index 028e5eb69f..1e01d9a5d7 100644
--- a/lib/common_test/doc/src/ct_property_test.xml
+++ b/lib/common_test/doc/src/ct_property_test.xml
@@ -32,7 +32,7 @@
     <rev>A</rev>
     <file>ct_property_test.xml</file>
   </header>
-  <module>ct_property_test</module>
+  <module since="OTP 17.3">ct_property_test</module>
   <modulesummary>EXPERIMENTAL support in Common Test for calling
     property-based tests.</modulesummary>
 
@@ -79,7 +79,7 @@
 
   <funcs>
     <func>
-    <name>init_per_suite(Config) -&gt; Config | {skip, Reason}</name>
+    <name since="OTP 17.3">init_per_suite(Config) -&gt; Config | {skip, Reason}</name>
     <fsummary>Initializes Config for property testing.</fsummary>
       <desc><marker id="init_per_suite-1"/>
         <p>Initializes <c>Config</c> for property testing.</p>
@@ -98,7 +98,7 @@
     </func>
 
     <func>
-    <name>quickcheck(Property, Config) -&gt; true | {fail, Reason}</name>
+    <name since="OTP 17.3">quickcheck(Property, Config) -&gt; true | {fail, Reason}</name>
     <fsummary>Calls quickcheck and returns the result in a form suitable for
       Common Test.</fsummary>
       <desc><marker id="quickcheck-2"/>
diff --git a/lib/common_test/doc/src/ct_rpc.xml b/lib/common_test/doc/src/ct_rpc.xml
index 90e6b833f7..00a4dcec08 100644
--- a/lib/common_test/doc/src/ct_rpc.xml
+++ b/lib/common_test/doc/src/ct_rpc.xml
@@ -32,7 +32,7 @@
     <rev>A</rev>
     <file>ct_rpc.xml</file>
   </header>
-  <module>ct_rpc</module>
+  <module since="">ct_rpc</module>
   <modulesummary>Common Test specific layer on Erlang/OTP rpc.</modulesummary>
 
   <description>
@@ -43,7 +43,7 @@
 
   <funcs>
     <func>
-      <name>app_node(App, Candidates) -&gt; NodeName</name>
+      <name since="">app_node(App, Candidates) -&gt; NodeName</name>
       <fsummary>From a set of candidate nodes determines which of them is
         running the application App.</fsummary>
       <type>
@@ -61,7 +61,7 @@
     </func>
 
     <func>
-      <name>app_node(App, Candidates, FailOnBadRPC) -&gt; NodeName</name>
+      <name since="">app_node(App, Candidates, FailOnBadRPC) -&gt; NodeName</name>
         <fsummary>Same as app_node/2, except that argument FailOnBadRPC
           determines if the search for a candidate node is to stop if
           badrpc is received at some point.</fsummary>
@@ -81,7 +81,7 @@
     </func>
 
     <func>
-      <name>app_node(App, Candidates, FailOnBadRPC, Cookie) -&gt; NodeName</name>
+      <name since="">app_node(App, Candidates, FailOnBadRPC, Cookie) -&gt; NodeName</name>
       <fsummary>Same as app_node/2, except that argument FailOnBadRPC
         determines if the search for a candidate node is to stop if badrpc is
         received at some point.</fsummary>
@@ -105,7 +105,7 @@
     </func>
 
     <func>
-      <name>call(Node, Module, Function, Args) -&gt; term() | {badrpc, Reason}</name>
+      <name since="">call(Node, Module, Function, Args) -&gt; term() | {badrpc, Reason}</name>
       <fsummary>Same as call(Node, Module, Function, Args, infinity).</fsummary>
       <desc><marker id="call-4"/>
         <p>Same as <c>call(Node, Module, Function, Args, infinity)</c>.</p>
@@ -113,7 +113,7 @@
     </func>
 
     <func>
-      <name>call(Node, Module, Function, Args, TimeOut) -&gt; term() | {badrpc, Reason}</name>
+      <name since="">call(Node, Module, Function, Args, TimeOut) -&gt; term() | {badrpc, Reason}</name>
       <fsummary>Evaluates apply(Module, Function, Args) on the node
         Node.</fsummary>
       <type>
@@ -136,7 +136,7 @@
     </func>
 
     <func>
-      <name>call(Node, Module, Function, Args, TimeOut, Cookie) -&gt; term() | {badrpc, Reason}</name>
+      <name since="">call(Node, Module, Function, Args, TimeOut, Cookie) -&gt; term() | {badrpc, Reason}</name>
       <fsummary>Evaluates apply(Module, Function, Args) on the node
         Node.</fsummary>
       <type>
@@ -163,7 +163,7 @@
     </func>
 
     <func>
-      <name>cast(Node, Module, Function, Args) -&gt; ok</name>
+      <name since="">cast(Node, Module, Function, Args) -&gt; ok</name>
       <fsummary>Evaluates apply(Module, Function, Args) on the node
         Node.</fsummary>
       <type>
@@ -187,7 +187,7 @@
     </func>
 
     <func>
-      <name>cast(Node, Module, Function, Args, Cookie) -&gt; ok</name>
+      <name since="">cast(Node, Module, Function, Args, Cookie) -&gt; ok</name>
       <fsummary>Evaluates apply(Module, Function, Args) on the node
         Node.</fsummary>
       <type>
diff --git a/lib/common_test/doc/src/ct_slave.xml b/lib/common_test/doc/src/ct_slave.xml
index 9d9aa50051..84e619482d 100644
--- a/lib/common_test/doc/src/ct_slave.xml
+++ b/lib/common_test/doc/src/ct_slave.xml
@@ -32,7 +32,7 @@
     <rev>A</rev>
     <file>ct_slave.xml</file>
   </header>
-  <module>ct_slave</module>
+  <module since="OTP R14B">ct_slave</module>
   <modulesummary>Common Test framework functions for starting and stopping
     nodes for Large-Scale Testing.</modulesummary>
 
@@ -50,7 +50,7 @@
 
   <funcs>
     <func>
-      <name>start(Node) -&gt; Result</name>
+      <name since="OTP R14B">start(Node) -&gt; Result</name>
       <fsummary>Starts an Erlang node with name Node on the local
         host.</fsummary>
       <type>
@@ -68,7 +68,7 @@
     </func>
 
     <func>
-      <name>start(HostOrNode, NodeOrOpts) -&gt; Result</name>
+      <name since="OTP R14B">start(HostOrNode, NodeOrOpts) -&gt; Result</name>
       <fsummary>Starts an Erlang node with default options on a specified
         host, or on the local host with specified options.</fsummary>
       <type>
@@ -90,7 +90,7 @@
     </func>
 
     <func>
-      <name>start(Host, Node, Opts) -&gt; Result</name>
+      <name since="OTP R14B">start(Host, Node, Opts) -&gt; Result</name>
       <fsummary>Starts an Erlang node with name Node on host Host as
         specified by the combination of options in Opts.</fsummary>
       <type>
@@ -184,7 +184,7 @@
     </func>
 
     <func>
-      <name>stop(Node) -&gt; Result</name>
+      <name since="OTP R14B">stop(Node) -&gt; Result</name>
       <fsummary>Stops the running Erlang node with name Node on the local
         host.</fsummary>
       <type>
@@ -199,7 +199,7 @@
     </func>
 
     <func>
-      <name>stop(Host, Node) -&gt; Result</name>
+      <name since="OTP R14B">stop(Host, Node) -&gt; Result</name>
       <fsummary>Stops the running Erlang node with name Node on host
         Host.</fsummary>
       <type>
diff --git a/lib/common_test/doc/src/ct_snmp.xml b/lib/common_test/doc/src/ct_snmp.xml
index 0a5e52b16c..343781814a 100644
--- a/lib/common_test/doc/src/ct_snmp.xml
+++ b/lib/common_test/doc/src/ct_snmp.xml
@@ -32,7 +32,7 @@
     <rev>A</rev>
     <file>ct_snmp.xml</file>
   </header>
-  <module>ct_snmp</module>
+  <module since="">ct_snmp</module>
   <modulesummary>Common Test user interface module for the SNMP application.</modulesummary>
 
   <description>
@@ -240,7 +240,7 @@
 
   <funcs>
     <func>
-      <name>get_next_values(Agent, Oids, MgrAgentConfName) -&gt; SnmpReply</name>
+      <name since="">get_next_values(Agent, Oids, MgrAgentConfName) -&gt; SnmpReply</name>
       <fsummary>Issues a synchronous SNMP get next request.</fsummary>
       <type>
         <v>Agent = agent_name()</v>
@@ -254,7 +254,7 @@
     </func>
 
     <func>
-      <name>get_values(Agent, Oids, MgrAgentConfName) -&gt; SnmpReply</name>
+      <name since="">get_values(Agent, Oids, MgrAgentConfName) -&gt; SnmpReply</name>
       <fsummary>Issues a synchronous SNMP get request.</fsummary>
       <type>
         <v>Agent = agent_name()</v>
@@ -268,7 +268,7 @@
     </func>
 
     <func>
-      <name>load_mibs(Mibs) -&gt; ok | {error, Reason}</name>
+      <name since="">load_mibs(Mibs) -&gt; ok | {error, Reason}</name>
       <fsummary>Loads the MIBs into agent snmp_master_agent.</fsummary>
       <type>
         <v>Mibs = [MibName]</v>
@@ -281,7 +281,7 @@
     </func>
 
     <func>
-      <name>register_agents(MgrAgentConfName, ManagedAgents) -&gt; ok | {error, Reason}</name>
+      <name since="">register_agents(MgrAgentConfName, ManagedAgents) -&gt; ok | {error, Reason}</name>
       <fsummary>Explicitly instructs the manager to handle this
         agent.</fsummary>
       <type>
@@ -300,7 +300,7 @@
     </func>
 
     <func>
-      <name>register_users(MgrAgentConfName, Users) -&gt; ok | {error, Reason}</name>
+      <name since="">register_users(MgrAgentConfName, Users) -&gt; ok | {error, Reason}</name>
       <fsummary>Registers the manager entity (=user) responsible for specific
         agent(s).</fsummary>
       <type>
@@ -319,7 +319,7 @@
     </func>
 
     <func>
-      <name>register_usm_users(MgrAgentConfName, UsmUsers) -&gt; ok | {error, Reason}</name>
+      <name since="">register_usm_users(MgrAgentConfName, UsmUsers) -&gt; ok | {error, Reason}</name>
       <fsummary>Explicitly instructs the manager to handle this USM user.</fsummary>
       <type>
         <v>MgrAgentConfName = atom()</v>
@@ -337,7 +337,7 @@
     </func>
 
     <func>
-      <name>set_info(Config) -&gt; [{Agent, OldVarsAndVals, NewVarsAndVals}]</name>
+      <name since="">set_info(Config) -&gt; [{Agent, OldVarsAndVals, NewVarsAndVals}]</name>
       <fsummary>Returns a list of all successful set requests performed in the
         test case in reverse order.</fsummary>
       <type>
@@ -357,7 +357,7 @@
     </func>
 
     <func>
-      <name>set_values(Agent, VarsAndVals, MgrAgentConfName, Config) -&gt; SnmpReply</name>
+      <name since="">set_values(Agent, VarsAndVals, MgrAgentConfName, Config) -&gt; SnmpReply</name>
       <fsummary>Issues a synchronous SNMP set request.</fsummary>
       <type>
         <v>Agent = agent_name()</v>
@@ -372,7 +372,7 @@
     </func>
 
     <func>
-      <name>start(Config, MgrAgentConfName) -&gt; ok</name>
+      <name since="">start(Config, MgrAgentConfName) -&gt; ok</name>
       <fsummary>Equivalent to start(Config, MgrAgentConfName,
         undefined).</fsummary>
       <desc><marker id="start-2"/>
@@ -383,7 +383,7 @@
     </func>
 
     <func>
-      <name>start(Config, MgrAgentConfName, SnmpAppConfName) -&gt; ok</name>
+      <name since="">start(Config, MgrAgentConfName, SnmpAppConfName) -&gt; ok</name>
       <fsummary>Starts an SNMP manager and/or agent.</fsummary>
       <type>
         <v>Config = [{Key, Value}]</v>
@@ -415,7 +415,7 @@
     </func>
 
     <func>
-      <name>stop(Config) -&gt; ok</name>
+      <name since="">stop(Config) -&gt; ok</name>
       <fsummary>Stops the SNMP manager and/or agent, and removes all files
         created.</fsummary>
       <type>
@@ -430,7 +430,7 @@
     </func>
 
     <func>
-      <name>unload_mibs(Mibs) -&gt; ok | {error, Reason}</name>
+      <name since="OTP R16B">unload_mibs(Mibs) -&gt; ok | {error, Reason}</name>
       <fsummary>Unloads the MIBs from agent snmp_master_agent.</fsummary>
       <type>
         <v>Mibs = [MibName]</v>
@@ -443,7 +443,7 @@
     </func>
 
     <func>
-      <name>unregister_agents(MgrAgentConfName) -&gt; ok</name>
+      <name since="">unregister_agents(MgrAgentConfName) -&gt; ok</name>
       <fsummary>Unregisters all managed agents.</fsummary>
       <type>
         <v>MgrAgentConfName = atom()</v>
@@ -455,7 +455,7 @@
     </func>
 
     <func>
-      <name>unregister_agents(MgrAgentConfName, ManagedAgents) -&gt; ok</name>
+      <name since="OTP R16B">unregister_agents(MgrAgentConfName, ManagedAgents) -&gt; ok</name>
       <fsummary>Unregisters the specified managed agents.</fsummary>
       <type>
         <v>MgrAgentConfName = atom()</v>
@@ -468,7 +468,7 @@
     </func>
 
     <func>
-      <name>unregister_users(MgrAgentConfName) -&gt; ok</name>
+      <name since="">unregister_users(MgrAgentConfName) -&gt; ok</name>
       <fsummary>Unregisters all users.</fsummary>
       <type>
         <v>MgrAgentConfName = atom()</v>
@@ -480,7 +480,7 @@
     </func>
 
     <func>
-      <name>unregister_users(MgrAgentConfName, Users) -&gt; ok</name>
+      <name since="OTP R16B">unregister_users(MgrAgentConfName, Users) -&gt; ok</name>
       <fsummary>Unregisters the specified users.</fsummary>
       <type>
         <v>MgrAgentConfName = atom()</v>
@@ -493,7 +493,7 @@
     </func>
 
     <func>
-      <name>unregister_usm_users(MgrAgentConfName) -&gt; ok</name>
+      <name since="OTP R16B">unregister_usm_users(MgrAgentConfName) -&gt; ok</name>
       <fsummary>Unregisters all USM users.</fsummary>
       <type>
         <v>MgrAgentConfName = atom()</v>
@@ -505,7 +505,7 @@
     </func>
 
     <func>
-      <name>unregister_usm_users(MgrAgentConfName, UsmUsers) -&gt; ok</name>
+      <name since="OTP R16B">unregister_usm_users(MgrAgentConfName, UsmUsers) -&gt; ok</name>
         <fsummary>Unregisters the specified USM users.</fsummary>
       <type>
         <v>MgrAgentConfName = atom()</v>
diff --git a/lib/common_test/doc/src/ct_ssh.xml b/lib/common_test/doc/src/ct_ssh.xml
index 0c7efed154..8d9f31aff8 100644
--- a/lib/common_test/doc/src/ct_ssh.xml
+++ b/lib/common_test/doc/src/ct_ssh.xml
@@ -32,7 +32,7 @@
     <rev>A</rev>
     <file>ct_ssh.xml</file>
   </header>
-  <module>ct_ssh</module>
+  <module since="">ct_ssh</module>
   <modulesummary>SSH/SFTP client module.</modulesummary>
 
 <description>
@@ -95,7 +95,7 @@
 
   <funcs>
     <func>
-      <name>apread(SSH, Handle, Position, Length) -&gt; Result</name>
+      <name since="">apread(SSH, Handle, Position, Length) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -109,7 +109,7 @@
     </func>
 
     <func>
-      <name>apread(SSH, Server, Handle, Position, Length) -&gt; Result</name>
+      <name since="">apread(SSH, Server, Handle, Position, Length) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -123,7 +123,7 @@
     </func>
 
     <func>
-      <name>apwrite(SSH, Handle, Position, Data) -&gt; Result</name>
+      <name since="">apwrite(SSH, Handle, Position, Data) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -137,7 +137,7 @@
     </func>
 
     <func>
-      <name>apwrite(SSH, Server, Handle, Position, Data) -&gt; Result</name>
+      <name since="">apwrite(SSH, Server, Handle, Position, Data) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -151,7 +151,7 @@
     </func>
 
     <func>
-      <name>aread(SSH, Handle, Len) -&gt; Result</name>
+      <name since="">aread(SSH, Handle, Len) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -165,7 +165,7 @@
     </func>
 
     <func>
-      <name>aread(SSH, Server, Handle, Len) -&gt; Result</name>
+      <name since="">aread(SSH, Server, Handle, Len) -&gt; Result</name>
       <fsummary>For inforamtion and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -179,7 +179,7 @@
     </func>
 
     <func>
-      <name>awrite(SSH, Handle, Data) -&gt; Result</name>
+      <name since="">awrite(SSH, Handle, Data) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -193,7 +193,7 @@
     </func>
 
     <func>
-      <name>awrite(SSH, Server, Handle, Data) -&gt; Result</name>
+      <name since="">awrite(SSH, Server, Handle, Data) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -207,7 +207,7 @@
     </func>
 
     <func>
-      <name>close(SSH, Handle) -&gt; Result</name>
+      <name since="">close(SSH, Handle) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -221,7 +221,7 @@
     </func>
 
     <func>
-      <name>close(SSH, Server, Handle) -&gt; Result</name>
+      <name since="">close(SSH, Server, Handle) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -235,7 +235,7 @@
     </func>
 
     <func>
-      <name>connect(KeyOrName) -&gt; {ok, Handle} | {error, Reason}</name>
+      <name since="">connect(KeyOrName) -&gt; {ok, Handle} | {error, Reason}</name>
       <fsummary>Equivalent to connect(KeyOrName, host, []).</fsummary>
       <desc><marker id="connect-1"/>
         <p>Equivalent to
@@ -245,7 +245,7 @@
     </func>
 
     <func>
-      <name>connect(KeyOrName, ConnType) -&gt; {ok, Handle} | {error, Reason}</name>
+      <name since="">connect(KeyOrName, ConnType) -&gt; {ok, Handle} | {error, Reason}</name>
       <fsummary>Equivalent to connect(KeyOrName, ConnType, []).</fsummary>
       <desc><marker id="connect-2"/>
         <p>Equivalent to
@@ -255,7 +255,7 @@
     </func>
 
     <func>
-      <name>connect(KeyOrName, ConnType, ExtraOpts) -&gt; {ok, Handle} | {error, Reason}</name>
+      <name since="">connect(KeyOrName, ConnType, ExtraOpts) -&gt; {ok, Handle} | {error, Reason}</name>
       <fsummary>Opens an SSH or SFTP connection using the information
         associated with KeyOrName.</fsummary>
       <type>
@@ -301,7 +301,7 @@
     </func>
 
     <func>
-      <name>del_dir(SSH, Name) -&gt; Result</name>
+      <name since="">del_dir(SSH, Name) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -315,7 +315,7 @@
     </func>
 
     <func>
-      <name>del_dir(SSH, Server, Name) -&gt; Result</name>
+      <name since="">del_dir(SSH, Server, Name) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -329,7 +329,7 @@
     </func>
 
     <func>
-      <name>delete(SSH, Name) -&gt; Result</name>
+      <name since="">delete(SSH, Name) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -343,7 +343,7 @@
     </func>
 
     <func>
-      <name>delete(SSH, Server, Name) -&gt; Result</name>
+      <name since="">delete(SSH, Server, Name) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -357,7 +357,7 @@
     </func>
 
     <func>
-      <name>disconnect(SSH) -&gt; ok | {error, Reason}</name>
+      <name since="">disconnect(SSH) -&gt; ok | {error, Reason}</name>
       <fsummary>Closes an SSH/SFTP connection.</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -369,7 +369,7 @@
     </func>
 
     <func>
-      <name>exec(SSH, Command) -&gt; {ok, Data} | {error, Reason}</name>
+      <name since="">exec(SSH, Command) -&gt; {ok, Data} | {error, Reason}</name>
       <fsummary>Equivalent to exec(SSH, Command, DefaultTimeout).</fsummary>
       <desc><marker id="exec-2"/>
         <p>Equivalent to
@@ -379,7 +379,7 @@
     </func>
 
     <func>
-      <name>exec(SSH, Command, Timeout) -&gt; {ok, Data} | {error, Reason}</name>
+      <name since="">exec(SSH, Command, Timeout) -&gt; {ok, Data} | {error, Reason}</name>
       <fsummary>Requests server to perform Command.</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -396,7 +396,7 @@
     </func>
 
     <func>
-      <name>exec(SSH, ChannelId, Command, Timeout) -&gt; {ok, Data} | {error, Reason}</name>
+      <name since="">exec(SSH, ChannelId, Command, Timeout) -&gt; {ok, Data} | {error, Reason}</name>
       <fsummary>Requests server to perform Command.</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -414,7 +414,7 @@
     </func>
 
     <func>
-      <name>get_file_info(SSH, Handle) -&gt; Result</name>
+      <name since="">get_file_info(SSH, Handle) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -428,7 +428,7 @@
     </func>
 
     <func>
-      <name>get_file_info(SSH, Server, Handle) -&gt; Result</name>
+      <name since="">get_file_info(SSH, Server, Handle) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -442,7 +442,7 @@
     </func>
 
     <func>
-      <name>list_dir(SSH, Path) -&gt; Result</name>
+      <name since="">list_dir(SSH, Path) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -456,7 +456,7 @@
     </func>
 
     <func>
-      <name>list_dir(SSH, Server, Path) -&gt; Result</name>
+      <name since="">list_dir(SSH, Server, Path) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -470,7 +470,7 @@
     </func>
 
     <func>
-      <name>make_dir(SSH, Name) -&gt; Result</name>
+      <name since="">make_dir(SSH, Name) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -484,7 +484,7 @@
     </func>
 
     <func>
-      <name>make_dir(SSH, Server, Name) -&gt; Result</name>
+      <name since="">make_dir(SSH, Server, Name) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -498,7 +498,7 @@
     </func>
 
     <func>
-      <name>make_symlink(SSH, Name, Target) -&gt; Result</name>
+      <name since="">make_symlink(SSH, Name, Target) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -512,7 +512,7 @@
     </func>
 
     <func>
-      <name>make_symlink(SSH, Server, Name, Target) -&gt; Result</name>
+      <name since="">make_symlink(SSH, Server, Name, Target) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -526,7 +526,7 @@
     </func>
 
     <func>
-      <name>open(SSH, File, Mode) -&gt; Result</name>
+      <name since="">open(SSH, File, Mode) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -540,7 +540,7 @@
     </func>
 
     <func>
-      <name>open(SSH, Server, File, Mode) -&gt; Result</name>
+      <name since="">open(SSH, Server, File, Mode) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -554,7 +554,7 @@
     </func>
 
     <func>
-      <name>opendir(SSH, Path) -&gt; Result</name>
+      <name since="">opendir(SSH, Path) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -568,7 +568,7 @@
     </func>
 
     <func>
-      <name>opendir(SSH, Server, Path) -&gt; Result</name>
+      <name since="">opendir(SSH, Server, Path) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -582,7 +582,7 @@
     </func>
 
     <func>
-      <name>position(SSH, Handle, Location) -&gt; Result</name>
+      <name since="">position(SSH, Handle, Location) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -596,7 +596,7 @@
     </func>
 
     <func>
-      <name>position(SSH, Server, Handle, Location) -&gt; Result</name>
+      <name since="">position(SSH, Server, Handle, Location) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -610,7 +610,7 @@
     </func>
 
     <func>
-      <name>pread(SSH, Handle, Position, Length) -&gt; Result</name>
+      <name since="">pread(SSH, Handle, Position, Length) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -624,7 +624,7 @@
     </func>
 
     <func>
-      <name>pread(SSH, Server, Handle, Position, Length) -&gt; Result</name>
+      <name since="">pread(SSH, Server, Handle, Position, Length) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -638,7 +638,7 @@
     </func>
 
     <func>
-      <name>pwrite(SSH, Handle, Position, Data) -&gt; Result</name>
+      <name since="">pwrite(SSH, Handle, Position, Data) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -652,7 +652,7 @@
     </func>
 
     <func>
-      <name>pwrite(SSH, Server, Handle, Position, Data) -&gt; Result</name>
+      <name since="">pwrite(SSH, Server, Handle, Position, Data) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -666,7 +666,7 @@
     </func>
 
     <func>
-      <name>read(SSH, Handle, Len) -&gt; Result</name>
+      <name since="">read(SSH, Handle, Len) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -680,7 +680,7 @@
     </func>
 
     <func>
-      <name>read(SSH, Server, Handle, Len) -&gt; Result</name>
+      <name since="">read(SSH, Server, Handle, Len) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -694,7 +694,7 @@
     </func>
 
     <func>
-      <name>read_file(SSH, File) -&gt; Result</name>
+      <name since="">read_file(SSH, File) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -708,7 +708,7 @@
     </func>
 
     <func>
-      <name>read_file(SSH, Server, File) -&gt; Result</name>
+      <name since="">read_file(SSH, Server, File) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -722,7 +722,7 @@
     </func>
 
     <func>
-      <name>read_file_info(SSH, Name) -&gt; Result</name>
+      <name since="">read_file_info(SSH, Name) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -736,7 +736,7 @@
     </func>
 
     <func>
-      <name>read_file_info(SSH, Server, Name) -&gt; Result</name>
+      <name since="">read_file_info(SSH, Server, Name) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -750,7 +750,7 @@
     </func>
 
     <func>
-      <name>read_link(SSH, Name) -&gt; Result</name>
+      <name since="">read_link(SSH, Name) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -764,7 +764,7 @@
     </func>
 
     <func>
-      <name>read_link(SSH, Server, Name) -&gt; Result</name>
+      <name since="">read_link(SSH, Server, Name) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -778,7 +778,7 @@
     </func>
 
     <func>
-      <name>read_link_info(SSH, Name) -&gt; Result</name>
+      <name since="">read_link_info(SSH, Name) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -792,7 +792,7 @@
     </func>
 
     <func>
-      <name>read_link_info(SSH, Server, Name) -&gt; Result</name>
+      <name since="">read_link_info(SSH, Server, Name) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -806,7 +806,7 @@
     </func>
 
     <func>
-      <name>receive_response(SSH, ChannelId) -&gt; {ok, Data} | {error, Reason}</name>
+      <name since="">receive_response(SSH, ChannelId) -&gt; {ok, Data} | {error, Reason}</name>
       <fsummary>Equivalent to receive_response(SSH, ChannelId,
         close).</fsummary>
       <desc><marker id="receive_response-2"/>
@@ -817,7 +817,7 @@ ChannelId, close)</c></seealso>.</p>
     </func>
 
      <func>
-       <name>receive_response(SSH, ChannelId, End) -&gt; {ok, Data} | {error, Reason}</name>
+       <name since="">receive_response(SSH, ChannelId, End) -&gt; {ok, Data} | {error, Reason}</name>
       <fsummary>Equivalent to receive_response(SSH, ChannelId, End,
         DefaultTimeout).</fsummary>
       <desc><marker id="receive_response-3"/>
@@ -828,7 +828,7 @@ ChannelId, End, DefaultTimeout)</c></seealso>.</p>
     </func>
 
     <func>
-      <name>receive_response(SSH, ChannelId, End, Timeout) -&gt; {ok, Data} | {timeout, Data} | {error, Reason}</name>
+      <name since="">receive_response(SSH, ChannelId, End, Timeout) -&gt; {ok, Data} | {timeout, Data} | {error, Reason}</name>
       <fsummary>Receives expected data from server on the specified session
         channel.</fsummary>
       <type>
@@ -863,7 +863,7 @@ ChannelId, End, DefaultTimeout)</c></seealso>.</p>
     </func>
 
     <func>
-      <name>rename(SSH, OldName, NewName) -&gt; Result</name>
+      <name since="">rename(SSH, OldName, NewName) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -877,7 +877,7 @@ ChannelId, End, DefaultTimeout)</c></seealso>.</p>
     </func>
 
     <func>
-      <name>rename(SSH, Server, OldName, NewName) -&gt; Result</name>
+      <name since="">rename(SSH, Server, OldName, NewName) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -891,7 +891,7 @@ ChannelId, End, DefaultTimeout)</c></seealso>.</p>
     </func>
 
     <func>
-      <name>send(SSH, ChannelId, Data) -&gt; ok | {error, Reason}</name>
+      <name since="">send(SSH, ChannelId, Data) -&gt; ok | {error, Reason}</name>
       <fsummary>Equivalent to send(SSH, ChannelId, 0, Data,
         DefaultTimeout).</fsummary>
       <desc><marker id="send-3"/>
@@ -901,7 +901,7 @@ ChannelId, End, DefaultTimeout)</c></seealso>.</p>
     </func>
 
     <func>
-      <name>send(SSH, ChannelId, Data, Timeout) -&gt; ok | {error, Reason}</name>
+      <name since="">send(SSH, ChannelId, Data, Timeout) -&gt; ok | {error, Reason}</name>
       <fsummary>Equivalent to send(SSH, ChannelId, 0, Data, Timeout).</fsummary>
       <desc><marker id="send-4"/>
         <p>Equivalent to <seealso marker="#send-5"><c>ct_ssh:send(SSH,
@@ -910,7 +910,7 @@ ChannelId, End, DefaultTimeout)</c></seealso>.</p>
     </func>
 
     <func>
-      <name>send(SSH, ChannelId, Type, Data, Timeout) -&gt; ok | {error, Reason}</name>
+      <name since="">send(SSH, ChannelId, Type, Data, Timeout) -&gt; ok | {error, Reason}</name>
       <fsummary>Sends data to server on specified session channel.</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -926,7 +926,7 @@ ChannelId, End, DefaultTimeout)</c></seealso>.</p>
     </func>
 
     <func>
-      <name>send_and_receive(SSH, ChannelId, Data) -&gt; {ok, Data} | {error, Reason}</name>
+      <name since="">send_and_receive(SSH, ChannelId, Data) -&gt; {ok, Data} | {error, Reason}</name>
       <fsummary>Equivalent to send_and_receive(SSH, ChannelId, Data,
         close).</fsummary>
       <desc><marker id="send_and_receive-3"/>
@@ -937,7 +937,7 @@ ChannelId, End, DefaultTimeout)</c></seealso>.</p>
     </func>
 
     <func>
-      <name>send_and_receive(SSH, ChannelId, Data, End) -&gt; {ok, Data} | {error, Reason}</name>
+      <name since="">send_and_receive(SSH, ChannelId, Data, End) -&gt; {ok, Data} | {error, Reason}</name>
       <fsummary>Equivalent to send_and_receive(SSH, ChannelId, 0, Data, End,
         DefaultTimeout).</fsummary>
       <desc><marker id="send_and_receive-4"/>
@@ -948,7 +948,7 @@ ChannelId, 0, Data, End, DefaultTimeout)</c></seealso>.</p>
     </func>
 
     <func>
-      <name>send_and_receive(SSH, ChannelId, Data, End, Timeout) -&gt; {ok, Data} | {error, Reason}</name>
+      <name since="">send_and_receive(SSH, ChannelId, Data, End, Timeout) -&gt; {ok, Data} | {error, Reason}</name>
       <fsummary>Equivalent to send_and_receive(SSH, ChannelId, 0, Data, End,
         Timeout).</fsummary>
       <desc><marker id="send_and_receive-5"/>
@@ -959,7 +959,7 @@ ChannelId, 0, Data, End, Timeout)</c></seealso>.</p>
     </func>
 
     <func>
-      <name>send_and_receive(SSH, ChannelId, Type, Data, End, Timeout) -&gt; {ok, Data} | {error, Reason}</name>
+      <name since="">send_and_receive(SSH, ChannelId, Type, Data, End, Timeout) -&gt; {ok, Data} | {error, Reason}</name>
       <fsummary>Sends data to server on specified session channel and waits
         to receive the server response.</fsummary>
       <type>
@@ -981,7 +981,7 @@ ChannelId, 0, Data, End, Timeout)</c></seealso>.</p>
     </func>
 
     <func>
-      <name>session_close(SSH, ChannelId) -&gt; ok | {error, Reason}</name>
+      <name since="">session_close(SSH, ChannelId) -&gt; ok | {error, Reason}</name>
       <fsummary>Closes an SSH session channel.</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -994,7 +994,7 @@ ChannelId, 0, Data, End, Timeout)</c></seealso>.</p>
     </func>
 
     <func>
-      <name>session_open(SSH) -&gt; {ok, ChannelId} | {error, Reason}</name>
+      <name since="">session_open(SSH) -&gt; {ok, ChannelId} | {error, Reason}</name>
       <fsummary>Equivalent to session_open(SSH, DefaultTimeout).</fsummary>
       <desc><marker id="session_open-1"/>
         <p>Equivalent to
@@ -1004,7 +1004,7 @@ ChannelId, 0, Data, End, Timeout)</c></seealso>.</p>
     </func>
 
     <func>
-      <name>session_open(SSH, Timeout) -&gt; {ok, ChannelId} | {error, Reason}</name>
+      <name since="">session_open(SSH, Timeout) -&gt; {ok, ChannelId} | {error, Reason}</name>
       <fsummary>Opens a channel for an SSH session.</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -1018,7 +1018,7 @@ ChannelId, 0, Data, End, Timeout)</c></seealso>.</p>
     </func>
 
     <func>
-      <name>sftp_connect(SSH) -&gt; {ok, Server} | {error, Reason}</name>
+      <name since="">sftp_connect(SSH) -&gt; {ok, Server} | {error, Reason}</name>
       <fsummary>Starts an SFTP session on an already existing SSH
         connection.</fsummary>
       <type>
@@ -1034,7 +1034,7 @@ ChannelId, 0, Data, End, Timeout)</c></seealso>.</p>
     </func>
 
     <func>
-      <name>shell(SSH, ChannelId) -&gt; ok | {error, Reason}</name>
+      <name since="OTP 20.0">shell(SSH, ChannelId) -&gt; ok | {error, Reason}</name>
       <fsummary>Equivalent to shell(SSH, ChannelId, DefaultTimeout).</fsummary>
       <desc><marker id="shell-2"/>
         <p>Equivalent to
@@ -1044,7 +1044,7 @@ ChannelId, 0, Data, End, Timeout)</c></seealso>.</p>
     </func>
 
     <func>
-      <name>shell(SSH, ChannelId, Timeout) -&gt; ok | {error, Reason}</name>
+      <name since="OTP 20.0">shell(SSH, ChannelId, Timeout) -&gt; ok | {error, Reason}</name>
       <fsummary>Requests that the user default shell is executed at the
         server end.</fsummary>
       <type>
@@ -1061,7 +1061,7 @@ ChannelId, 0, Data, End, Timeout)</c></seealso>.</p>
     </func>
 
     <func>
-      <name>subsystem(SSH, ChannelId, Subsystem) -&gt; Status | {error, Reason}</name>
+      <name since="">subsystem(SSH, ChannelId, Subsystem) -&gt; Status | {error, Reason}</name>
       <fsummary>Equivalent to subsystem(SSH, ChannelId, Subsystem,
         DefaultTimeout).</fsummary>
       <desc><marker id="subsystem-3"/>
@@ -1072,7 +1072,7 @@ ChannelId, 0, Data, End, Timeout)</c></seealso>.</p>
     </func>
 
     <func>
-      <name>subsystem(SSH, ChannelId, Subsystem, Timeout) -&gt; Status | {error, Reason}</name>
+      <name since="">subsystem(SSH, ChannelId, Subsystem, Timeout) -&gt; Status | {error, Reason}</name>
       <fsummary>Sends a request to execute a predefined subsystem.</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -1088,7 +1088,7 @@ ChannelId, 0, Data, End, Timeout)</c></seealso>.</p>
     </func>
 
     <func>
-      <name>write(SSH, Handle, Data) -&gt; Result</name>
+      <name since="">write(SSH, Handle, Data) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -1102,7 +1102,7 @@ ChannelId, 0, Data, End, Timeout)</c></seealso>.</p>
     </func>
 
     <func>
-      <name>write(SSH, Server, Handle, Data) -&gt; Result</name>
+      <name since="">write(SSH, Server, Handle, Data) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -1116,7 +1116,7 @@ ChannelId, 0, Data, End, Timeout)</c></seealso>.</p>
     </func>
 
     <func>
-      <name>write_file(SSH, File, Iolist) -&gt; Result</name>
+      <name since="">write_file(SSH, File, Iolist) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -1130,7 +1130,7 @@ ChannelId, 0, Data, End, Timeout)</c></seealso>.</p>
     </func>
 
     <func>
-      <name>write_file(SSH, Server, File, Iolist) -&gt; Result</name>
+      <name since="">write_file(SSH, Server, File, Iolist) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -1144,7 +1144,7 @@ ChannelId, 0, Data, End, Timeout)</c></seealso>.</p>
     </func>
 
     <func>
-      <name>write_file_info(SSH, Name, Info) -&gt; Result</name>
+      <name since="">write_file_info(SSH, Name, Info) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
@@ -1158,7 +1158,7 @@ ChannelId, 0, Data, End, Timeout)</c></seealso>.</p>
     </func>
 
     <func>
-      <name>write_file_info(SSH, Server, Name, Info) -&gt; Result</name>
+      <name since="">write_file_info(SSH, Server, Name, Info) -&gt; Result</name>
       <fsummary>For information and other types, see ssh_sftp(3).</fsummary>
       <type>
         <v>SSH = connection()</v>
diff --git a/lib/common_test/doc/src/ct_telnet.xml b/lib/common_test/doc/src/ct_telnet.xml
index 8e85cccc99..76f5305c46 100644
--- a/lib/common_test/doc/src/ct_telnet.xml
+++ b/lib/common_test/doc/src/ct_telnet.xml
@@ -32,7 +32,7 @@
     <rev>A</rev>
     <file>ct_telnet.xml</file>
   </header>
-  <module>ct_telnet</module>
+  <module since="">ct_telnet</module>
   <modulesummary>Common Test specific layer on top of Telnet client ct_telnet_client.erl</modulesummary>
 
   <description>
@@ -205,7 +205,7 @@
 
   <funcs>
     <func>
-      <name>close(Connection) -&gt; ok | {error, Reason}</name>
+      <name since="">close(Connection) -&gt; ok | {error, Reason}</name>
       <fsummary>Closes the Telnet connection and stops the process managing
         it.</fsummary>
       <type>
@@ -223,7 +223,7 @@
     </func>
 
     <func>
-      <name>cmd(Connection, Cmd) -&gt; {ok, Data} | {error, Reason}</name>
+      <name since="">cmd(Connection, Cmd) -&gt; {ok, Data} | {error, Reason}</name>
       <fsummary>Equivalent to cmd(Connection, Cmd, []).</fsummary>
       <desc><marker id="cmd-2"/>
         <p>Equivalent to
@@ -233,24 +233,27 @@
     </func>
 
     <func>
-      <name>cmd(Connection, Cmd, Opts) -&gt; {ok, Data} | {error, Reason}</name>
+      <name since="">cmd(Connection, Cmd, Opts) -&gt; {ok, Data} | {error, Reason}</name>
       <fsummary>Sends a command through Telnet and waits for prompt.</fsummary>
       <type>
         <v>Connection = connection()</v>
         <v>Cmd = string()</v>
         <v>Opts = [Opt]</v>
-        <v>Opt = {timeout, timeout()} | {newline, boolean()}</v>
+        <v>Opt = {timeout, timeout()} | {newline, boolean() | string()}</v>
         <v>Data = [string()]</v>
         <v>Reason = term()</v>
       </type>
       <desc><marker id="cmd-3"/>
         <p>Sends a command through Telnet and waits for prompt.</p>
 
-        <p>By default, this function adds a new line to the end of the
+        <p>By default, this function adds "\n" to the end of the
           specified command. If this is not desired, use option
           <c>{newline,false}</c>. This is necessary, for example, when
           sending Telnet command sequences prefixed with character
-          Interprete As Command (IAC).</p>
+          Interpret As Command (IAC). Option <c>{newline,string()}</c>
+          can also be used if a different line end than "\n" is
+          required, for instance <c>{newline,"\r\n"}</c>, to add both
+          carriage return and newline characters.</p>
 
         <p>Option <c>timeout</c> specifies how long the client must wait
           for prompt. If the time expires, the function returns
@@ -262,7 +265,7 @@
     </func>
 
     <func>
-      <name>cmdf(Connection, CmdFormat, Args) -&gt; {ok, Data} | {error, Reason}</name>
+      <name since="">cmdf(Connection, CmdFormat, Args) -&gt; {ok, Data} | {error, Reason}</name>
       <fsummary>Equivalent to cmdf(Connection, CmdFormat, Args, []).</fsummary>
       <desc><marker id="cmdf-3"/>
         <p>Equivalent to
@@ -272,7 +275,7 @@
     </func>
 
     <func>
-      <name>cmdf(Connection, CmdFormat, Args, Opts) -&gt; {ok, Data} | {error, Reason}</name>
+      <name since="">cmdf(Connection, CmdFormat, Args, Opts) -&gt; {ok, Data} | {error, Reason}</name>
       <fsummary>Sends a Telnet command and waits for prompt (uses a format
         string and a list of arguments to build the command).</fsummary>
       <type>
@@ -280,7 +283,7 @@
         <v>CmdFormat = string()</v>
         <v>Args = list()</v>
         <v>Opts = [Opt]</v>
-        <v>Opt = {timeout, timeout()} | {newline, boolean()}</v>
+        <v>Opt = {timeout, timeout()} | {newline, boolean() | string()}</v>
         <v>Data = [string()]</v>
         <v>Reason = term()</v>
       </type>
@@ -294,7 +297,7 @@
     </func>
 
     <func>
-      <name>expect(Connection, Patterns) -&gt; term()</name>
+      <name since="">expect(Connection, Patterns) -&gt; term()</name>
       <fsummary>Equivalent to expect(Connections, Patterns, []).</fsummary>
       <desc><marker id="expect-2"/>
         <p>Equivalent to
@@ -304,7 +307,7 @@
     </func>
 
     <func>
-      <name>expect(Connection, Patterns, Opts) -&gt; {ok, Match} | {ok, MatchList, HaltReason} | {error, Reason}</name>
+      <name since="">expect(Connection, Patterns, Opts) -&gt; {ok, Match} | {ok, MatchList, HaltReason} | {error, Reason}</name>
       <fsummary>Gets data from Telnet and waits for the expected
         pattern.</fsummary>
       <type>
@@ -339,7 +342,7 @@
           subexpression number <c>N</c>. Subexpressions are denoted with
           <c>'(' ')'</c> in the regular expression.</p>
 
-        <p>If a <c>Tag</c> is speciifed, the returned <c>Match</c> also
+        <p>If a <c>Tag</c> is specified, the returned <c>Match</c> also
           includes the matched <c>Tag</c>. Otherwise, only <c>RxMatch</c>
           is returned.</p>
 
@@ -382,7 +385,7 @@
             can abort the operation of waiting for prompt.</p></item>
           <tag><c>repeat | repeat, N</c></tag>
           <item><p>The pattern(s) must be matched multiple times. If <c>N</c>
-            is speciified, the pattern(s) are matched <c>N</c> times, and
+            is specified, the pattern(s) are matched <c>N</c> times, and
             the function returns <c>HaltReason = done</c>. This option can be
             interrupted by one or more <c>HaltPatterns</c>. <c>MatchList</c>
             is always returned, that is, a list of <c>Match</c> instead of
@@ -422,7 +425,7 @@
     </func>
 
     <func>
-      <name>get_data(Connection) -&gt; {ok, Data} | {error, Reason}</name>
+      <name since="">get_data(Connection) -&gt; {ok, Data} | {error, Reason}</name>
       <fsummary>Gets all data received by the Telnet client since the last
         command was sent.</fsummary>
       <type>
@@ -446,7 +449,7 @@
     </func>
 
     <func>
-      <name>open(Name) -&gt; {ok, Handle} | {error, Reason}</name>
+      <name since="">open(Name) -&gt; {ok, Handle} | {error, Reason}</name>
       <fsummary>Equivalent to open(Name, telnet).</fsummary>
       <desc><marker id="open-1"/>
         <p>Equivalent to
@@ -456,7 +459,7 @@
     </func>
 
     <func>
-      <name>open(Name, ConnType) -&gt; {ok, Handle} | {error, Reason}</name>
+      <name since="">open(Name, ConnType) -&gt; {ok, Handle} | {error, Reason}</name>
       <fsummary>Opens a Telnet connection to the specified target
         host.</fsummary>
       <type>
@@ -471,7 +474,7 @@
     </func>
 
     <func>
-      <name>open(KeyOrName, ConnType, TargetMod) -&gt; {ok, Handle} | {error, Reason}</name>
+      <name since="">open(KeyOrName, ConnType, TargetMod) -&gt; {ok, Handle} | {error, Reason}</name>
       <fsummary>Equivalent to open(KeyOrName, ConnType, TargetMod, []).</fsummary>
       <desc><marker id="open-3"/>
         <p>Equivalent to
@@ -481,7 +484,7 @@
     </func>
 
     <func>
-      <name>open(KeyOrName, ConnType, TargetMod, Extra) -&gt; {ok, Handle} | {error, Reason}</name>
+      <name since="">open(KeyOrName, ConnType, TargetMod, Extra) -&gt; {ok, Handle} | {error, Reason}</name>
       <fsummary>Opens a Telnet connection to the specified target
         host.</fsummary>
       <type>
@@ -531,7 +534,7 @@
     </func>
 
     <func>
-      <name>send(Connection, Cmd) -&gt; ok | {error, Reason}</name>
+      <name since="">send(Connection, Cmd) -&gt; ok | {error, Reason}</name>
       <fsummary>Equivalent to send(Connection, Cmd, []).</fsummary>
       <desc><marker id="send-2"/>
         <p>Equivalent to
@@ -541,23 +544,26 @@
     </func>
 
     <func>
-      <name>send(Connection, Cmd, Opts) -&gt; ok | {error, Reason}</name>
+      <name since="OTP 17.4">send(Connection, Cmd, Opts) -&gt; ok | {error, Reason}</name>
       <fsummary>Sends a Telnet command and returns immediately.</fsummary>
       <type>
         <v>Connection = connection()</v>
         <v>Cmd = string()</v>
         <v>Opts = [Opt]</v>
-        <v>Opt = {newline, boolean()}</v>
+        <v>Opt = {newline, boolean() | string()}</v>
         <v>Reason = term()</v>
       </type>
       <desc><marker id="send-3"/>
         <p>Sends a Telnet command and returns immediately.</p>
 
-        <p>By default, this function adds a newline to the end of the
+        <p>By default, this function adds "\n" to the end of the
           specified command. If this is not desired, option
           <c>{newline,false}</c> can be used. This is necessary, for example,
           when sending Telnet command sequences prefixed with character   
-          Interprete As Command (IAC).</p>
+          Interpret As Command (IAC). Option <c>{newline,string()}</c>
+          can also be used if a different line end than "\n" is
+          required, for instance <c>{newline,"\r\n"}</c>, to add both
+          carriage return and newline characters.</p>
 
         <p>The resulting output from the command can be read with
           <seealso marker="#get_data-1"><c>ct_telnet:get_data/2</c></seealso> or
@@ -566,7 +572,7 @@
     </func>
 
     <func>
-      <name>sendf(Connection, CmdFormat, Args) -&gt; ok | {error, Reason}</name>
+      <name since="">sendf(Connection, CmdFormat, Args) -&gt; ok | {error, Reason}</name>
       <fsummary>Equivalent to sendf(Connection, CmdFormat, Args, []).</fsummary>
       <desc><marker id="sendf-3"/>
         <p>Equivalent to
@@ -576,7 +582,7 @@
     </func>
 
     <func>
-    <name>sendf(Connection, CmdFormat, Args, Opts) -&gt; ok | {error, Reason}</name>
+    <name since="OTP 17.4">sendf(Connection, CmdFormat, Args, Opts) -&gt; ok | {error, Reason}</name>
     <fsummary>Sends a Telnet command and returns immediately (uses a format
       string and a list of arguments to build the command).</fsummary>
       <type>
@@ -584,12 +590,15 @@
         <v>CmdFormat = string()</v>
         <v>Args = list()</v>
         <v>Opts = [Opt]</v>
-        <v>Opt = {newline, boolean()}</v>
+        <v>Opt = {newline, boolean() | string()}</v>
         <v>Reason = term()</v>
       </type>
       <desc><marker id="sendf-4"/>
         <p>Sends a Telnet command and returns immediately (uses a format
           string and a list of arguments to build the command).</p>
+
+        <p>For details, see
+          <seealso marker="#send-3"><c>ct_telnet:send/3</c></seealso>.</p>
       </desc>
     </func>
   </funcs>
diff --git a/lib/common_test/doc/src/ct_testspec.xml b/lib/common_test/doc/src/ct_testspec.xml
index 36893f66cf..9cb9a2ae9f 100644
--- a/lib/common_test/doc/src/ct_testspec.xml
+++ b/lib/common_test/doc/src/ct_testspec.xml
@@ -32,7 +32,7 @@
     <rev>A</rev>
     <file>ct_testspec.xml</file>
   </header>
-  <module>ct_testspec</module>
+  <module since="OTP 19.3">ct_testspec</module>
   <modulesummary>Parsing of test specifications for Common Test.
   </modulesummary>
 
@@ -46,7 +46,7 @@
 
   <funcs>
     <func>
-    <name>get_tests(SpecsIn) -&gt; {ok, [{Specs,Tests}]} | {error, Reason}</name>
+    <name since="OTP 19.3">get_tests(SpecsIn) -&gt; {ok, [{Specs,Tests}]} | {error, Reason}</name>
     <fsummary>Parse the given test specification files and return the tests to run and skip.</fsummary>
       <type>
         <v>SpecsIn = [string()] | [[string()]]</v>
diff --git a/lib/common_test/doc/src/event_handler_chapter.xml b/lib/common_test/doc/src/event_handler_chapter.xml
index bd9ed21cb4..182abba7ca 100644
--- a/lib/common_test/doc/src/event_handler_chapter.xml
+++ b/lib/common_test/doc/src/event_handler_chapter.xml
@@ -378,7 +378,7 @@
 
     <note><p>To ensure that printouts to <c>stdout</c> (or printouts made with
     <seealso marker="ct#log-2"><c>ct:log/2,3</c></seealso> or 
-    <seealso marker="ct:pal-2"><c>ct:pal,2,3</c></seealso>) get written to the test case log
+    <seealso marker="ct#pal-2"><c>ct:pal,2,3</c></seealso>) get written to the test case log
     file, and not to the <c>Common Test</c> framework log, you can synchronize
     with the <c>Common Test</c> server by matching on evvents <c>tc_start</c> and <c>tc_done</c>.
     In the period between these events, all I/O is directed to the
diff --git a/lib/common_test/doc/src/notes.xml b/lib/common_test/doc/src/notes.xml
index 118dcd88bd..c8e0722a0f 100644
--- a/lib/common_test/doc/src/notes.xml
+++ b/lib/common_test/doc/src/notes.xml
@@ -33,6 +33,66 @@
     <file>notes.xml</file>
     </header>
 
+<section><title>Common_Test 1.17</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    A bug caused <c>ct:encrypt_config_file/3</c> and
+	    <c>ct:decrypt_config_file/3</c> to fail with
+	    <c>badmatch</c> if input parameter <c>KeyOrFile</c> was
+	    <c>{key,string()}</c>. This is now corrected.</p>
+          <p>
+	    Own Id: OTP-15540</p>
+        </item>
+        <item>
+          <p>
+	    The status of a test case which failed with timetrap
+	    timeout in <c>end_per_testcase</c> could not be modified
+	    by returning <c>{fail,Reason}</c> from a
+	    <c>post_end_per_testcase</c> hook function. This is now
+	    corrected.</p>
+          <p>
+	    Own Id: OTP-15584 Aux Id: ERIERL-282 </p>
+        </item>
+      </list>
+    </section>
+
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+          <p>
+	    A new variant of the <c>newline</c> option to
+	    <c>ct_telnet:cmd/3</c> and <c>ct_telnet:send/3</c> is
+	    added, which allows to specify a string to append as
+	    newline indicator on a command. By default, the value is
+	    "\n", but in some cases it is required to be "\r\n",
+	    which this option allows.</p>
+          <p>
+	    A faulty regular expression given as parameter to
+	    <c>ct_telnet:expect/2,3</c> would earlier crash and look
+	    like an internal error in common_test. A better error
+	    indication is now given, but the test case will still
+	    fail.</p>
+          <p>
+	    Own Id: OTP-15229 Aux Id: ERIERL-203 </p>
+        </item>
+        <item>
+          <p>
+	    Since the yang RFC allows more than one top element of
+	    config data in an <c>edit-config</c> element,
+	    <c>ct_netconfc:edit_config/3,4,5</c> can now take a list
+	    of XML elements.</p>
+          <p>
+	    Own Id: OTP-15298</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Common_Test 1.16.1</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
@@ -75,6 +135,44 @@
 
 </section>
 
+<section><title>Common_Test 1.15.4.1</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    The status of a test case which failed with timetrap
+	    timeout in <c>end_per_testcase</c> could not be modified
+	    by returning <c>{fail,Reason}</c> from a
+	    <c>post_end_per_testcase</c> hook function. This is now
+	    corrected.</p>
+          <p>
+	    Own Id: OTP-15584 Aux Id: ERIERL-282 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>Common_Test 1.15.4.0.1</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    The status of a test case which failed with timetrap
+	    timeout in <c>end_per_testcase</c> could not be modified
+	    by returning <c>{fail,Reason}</c> from a
+	    <c>post_end_per_testcase</c> hook function. This is now
+	    corrected.</p>
+          <p>
+	    Own Id: OTP-15584 Aux Id: ERIERL-282 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Common_Test 1.15.4</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
@@ -2109,7 +2207,7 @@
 	    ct_netconfc:close_session sometimes returned
 	    {error,closed} because the ssh connection was closed
 	    (from the server side) before the rpc-reply was received
-	    by the client. This is normal and can not be helped. It
+	    by the client. This is normal and cannot be helped. It
 	    has been corrected so the return will be 'ok' in this
 	    case. Other error situations will still give
 	    {error,Reason}.</p>
@@ -2123,7 +2221,7 @@
 	    {error,{process_down,Pid,normal}} because the ssh
 	    connection was closed (from the server side) before the
 	    rpc-reply was received by the client. This is normal and
-	    can not be helped. It has been corrected so the return
+	    cannot be helped. It has been corrected so the return
 	    will be 'ok' in this situation.</p>
           <p>
 	    Own Id: OTP-10570</p>
@@ -2775,8 +2873,8 @@
 	    The info function for <c>init/end_per_suite(Config)</c>
 	    is <c>init/end_per_suite()</c>, and for
 	    <c>init/end_per_group(GroupName,Config)</c> it's
-	    <c>init/end_per_group(GroupName)</c>. Info functions can
-	    not be used with <c>init/end_per_testcase(TestCase,
+	    <c>init/end_per_group(GroupName)</c>. Info functions
+	    cannot be used with <c>init/end_per_testcase(TestCase,
 	    Config)</c>, since these configuration functions execute
 	    on the test case process and will use the same properties
 	    as the test case (i.e. properties set by the test case
@@ -3860,7 +3958,7 @@
             If the Erlang runtime system was started without access
             to an erlang shell (e.g. -noshell), compilation errors
             would cause a crash in the Common Test application.
-            Without access to a shell, Common Test can not prompt the
+            Without access to a shell, Common Test cannot prompt the
             user to choose to continue or abort the test session, but
             must assume that the session should proceed.</p>
           <p>
@@ -4026,8 +4124,3 @@
   <section><title>common_test 1.3.0</title>
   </section>
 </chapter>
-
-
-
-
-
diff --git a/lib/common_test/doc/src/unix_telnet.xml b/lib/common_test/doc/src/unix_telnet.xml
index b2314a53ec..03d91b7dbe 100644
--- a/lib/common_test/doc/src/unix_telnet.xml
+++ b/lib/common_test/doc/src/unix_telnet.xml
@@ -32,7 +32,7 @@
     <rev>A</rev>
     <file>unix_telnet.xml</file>
   </header>
-  <module>unix_telnet</module>
+  <module since="">unix_telnet</module>
   <modulesummary>Callback module for ct_telnet, for connecting to a Telnet
     server on a UNIX host.</modulesummary>
 
@@ -80,7 +80,7 @@
 
   <funcs>
     <func>
-      <name>connect(ConnName, Ip, Port, Timeout, KeepAlive, TCPNoDelay, Extra) -&gt; {ok, Handle} | {error, Reason}</name>
+      <name since="OTP 18.3.3">connect(ConnName, Ip, Port, Timeout, KeepAlive, TCPNoDelay, Extra) -&gt; {ok, Handle} | {error, Reason}</name>
       <fsummary>Callback for ct_telnet.erl.</fsummary>
         <type>
           <v>ConnName = target_name()</v>
@@ -107,7 +107,7 @@
     </func>
 
     <func>
-      <name>get_prompt_regexp() -&gt; PromptRegexp</name>
+      <name since="">get_prompt_regexp() -&gt; PromptRegexp</name>
       <fsummary>Callback for ct_telnet.erl.</fsummary>
         <type>
           <v>PromptRegexp = prompt_regexp()</v>
diff --git a/lib/common_test/src/ct.erl b/lib/common_test/src/ct.erl
index 778ea2e9e2..bfa7b25862 100644
--- a/lib/common_test/src/ct.erl
+++ b/lib/common_test/src/ct.erl
@@ -390,11 +390,7 @@ testcases(TestDir, Suite) ->
     end.
 
 make_and_load(Dir, Suite) ->
-    EnvInclude =
-	case os:getenv("CT_INCLUDE_PATH") of
-	    false -> [];
-	    CtInclPath -> string:lexemes(CtInclPath, [$:,$ ,$,])
-	end,
+    EnvInclude = string:lexemes(os:getenv("CT_INCLUDE_PATH", ""), [$:,$ ,$,]),
     StartInclude =
 	case init:get_argument(include) of
 	    {ok,[Dirs]} -> Dirs;
diff --git a/lib/common_test/src/ct_config.erl b/lib/common_test/src/ct_config.erl
index a10d939919..a07e61199b 100644
--- a/lib/common_test/src/ct_config.erl
+++ b/lib/common_test/src/ct_config.erl
@@ -592,7 +592,7 @@ encrypt_config_file(SrcFileName, EncryptFileName, {file,KeyFile}) ->
 
 encrypt_config_file(SrcFileName, EncryptFileName, {key,Key}) ->
     _ = crypto:start(),
-    {Key,IVec} = make_crypto_key(Key),
+    {CryptoKey,IVec} = make_crypto_key(Key),
     case file:read_file(SrcFileName) of
 	{ok,Bin0} ->
 	    Bin1 = term_to_binary({SrcFileName,Bin0}),
@@ -600,7 +600,7 @@ encrypt_config_file(SrcFileName, EncryptFileName, {key,Key}) ->
 		       0 -> Bin1;
 		       N -> list_to_binary([Bin1,random_bytes(8-N)])
 		   end,
-	    EncBin = crypto:block_encrypt(des3_cbc, Key, IVec, Bin2),
+	    EncBin = crypto:block_encrypt(des3_cbc, CryptoKey, IVec, Bin2),
 	    case file:write_file(EncryptFileName, EncBin) of
 		ok ->
 		    io:format("~ts --(encrypt)--> ~ts~n",
@@ -631,10 +631,10 @@ decrypt_config_file(EncryptFileName, TargetFileName, {file,KeyFile}) ->
 
 decrypt_config_file(EncryptFileName, TargetFileName, {key,Key}) ->
     _ = crypto:start(),
-    {Key,IVec} = make_crypto_key(Key),
+    {CryptoKey,IVec} = make_crypto_key(Key),
     case file:read_file(EncryptFileName) of
 	{ok,Bin} ->
-	    DecBin = crypto:block_decrypt(des3_cbc, Key, IVec, Bin),
+	    DecBin = crypto:block_decrypt(des3_cbc, CryptoKey, IVec, Bin),
 	    case catch binary_to_term(DecBin) of
 		{'EXIT',_} ->
 		    {error,bad_file};
diff --git a/lib/common_test/src/ct_cover.erl b/lib/common_test/src/ct_cover.erl
index d286f20a4d..bcd98dcc58 100644
--- a/lib/common_test/src/ct_cover.erl
+++ b/lib/common_test/src/ct_cover.erl
@@ -262,6 +262,11 @@ get_app_info(App=#cover{app=Name}, [{src_files,Name,Src1}|Terms], Dir) ->
     Src = App#cover.src,
     get_app_info(App#cover{src=Src++Src1},Terms,Dir);
 
+get_app_info(App=#cover{app=none}, [{local_only,Bool}|Terms], Dir) ->
+    get_app_info(App, [{local_only,none,Bool}|Terms], Dir);
+get_app_info(App=#cover{app=Name}, [{local_only,Name,Bool}|Terms], Dir) ->
+    get_app_info(App#cover{local_only=Bool},Terms,Dir);
+
 get_app_info(App, [_|Terms], Dir) ->
     get_app_info(App, Terms, Dir);
 
diff --git a/lib/common_test/src/ct_framework.erl b/lib/common_test/src/ct_framework.erl
index 134ae0e1cc..506147474f 100644
--- a/lib/common_test/src/ct_framework.erl
+++ b/lib/common_test/src/ct_framework.erl
@@ -314,8 +314,8 @@ add_defaults(Mod,Func, GroupPath) ->
 	    ErrStr = io_lib:format("~n*** ERROR *** "
 				   "~w:suite/0 failed: ~tp~n",
 				   [Suite,Reason]),
-	    io:format(ErrStr, []),
-	    io:format(?def_gl, ErrStr, []),
+	    io:format("~ts", [ErrStr]),
+	    io:format(?def_gl, "~ts", [ErrStr]),
 	    {suite0_failed,{exited,Reason}};
 	SuiteInfo when is_list(SuiteInfo) ->
 	    case lists:all(fun(E) when is_tuple(E) -> true;
@@ -337,16 +337,16 @@ add_defaults(Mod,Func, GroupPath) ->
 					   "Invalid return value from "
 					   "~w:suite/0: ~tp~n",
 					   [Suite,SuiteInfo]),
-		    io:format(ErrStr, []),
-		    io:format(?def_gl, ErrStr, []),
+		    io:format("~ts", [ErrStr]),
+		    io:format(?def_gl, "~ts", [ErrStr]),
 		    {suite0_failed,bad_return_value}
 	    end;
 	SuiteInfo ->
 	    ErrStr = io_lib:format("~n*** ERROR *** "
 				   "Invalid return value from "
 				   "~w:suite/0: ~tp~n", [Suite,SuiteInfo]),
-	    io:format(ErrStr, []),
-	    io:format(?def_gl, ErrStr, []),
+	    io:format("~ts", [ErrStr]),
+	    io:format(?def_gl, "~ts", [ErrStr]),
 	    {suite0_failed,bad_return_value}
     end.
 
@@ -373,8 +373,8 @@ add_defaults1(Mod,Func, GroupPath, SuiteInfo) ->
 				      "Invalid return value from "
 				      "~w:group(~tw): ~tp~n",
 				      [Mod,GrName,BadGr0Val]),
-	    io:format(Gr0ErrStr, []),
-	    io:format(?def_gl, Gr0ErrStr, []),
+	    io:format("~ts", [Gr0ErrStr]),
+	    io:format(?def_gl, "~ts", [Gr0ErrStr]),
 	    {group0_failed,bad_return_value};
 	_ ->
 	    Args = if Func == init_per_group ; Func == end_per_group ->
@@ -395,8 +395,8 @@ add_defaults1(Mod,Func, GroupPath, SuiteInfo) ->
 					      "Invalid return value from "
 					      "~w:~tw/0: ~tp~n",
 					      [Mod,Func,BadTC0Val]),
-		    io:format(TC0ErrStr, []),
-		    io:format(?def_gl, TC0ErrStr, []),
+		    io:format("~ts", [TC0ErrStr]),
+		    io:format(?def_gl, "~ts", [TC0ErrStr]),
 		    {testcase0_failed,bad_return_value};
 		_ ->
 		    %% let test case info (also for all config funcs) override
@@ -972,11 +972,10 @@ error_notification(Mod,Func,_Args,{Error,Loc}) ->
     end,
 
     PrintError = fun(ErrorFormat, ErrorArgs) ->
-		       Div = "~n- - - - - - - - - - - - - - - - - - - "
-			     "- - - - - - - - - - - - - - - - - - - - -~n",
+                      Div = "\n- - - - - - - - - - - - - - - - - - - "
+                            "- - - - - - - - - - - - - - - - - - - - -\n",
 		       ErrorStr2 = io_lib:format(ErrorFormat, ErrorArgs),
-		       io:format(?def_gl, lists:concat([Div,ErrorStr2,Div,"~n"]),
-				 []),
+                      io:format(?def_gl, "~ts~n", [lists:concat([Div,ErrorStr2,Div])]),
 		       Link =
 			   "\n\n<a href=\"#end\">"
 			   "Full error description and stacktrace"
@@ -985,7 +984,8 @@ error_notification(Mod,Func,_Args,{Error,Loc}) ->
 		       ct_logs:tc_log(ct_error_notify,
 				      ?MAX_IMPORTANCE,
 				      "CT Error Notification",
-				      ErrorHtml2++Link, [], [])
+                                      "~ts", [ErrorHtml2++Link],
+                                      [])
 	       end,
     case Loc of
 	[{?MODULE,error_in_suite}] ->
@@ -1168,7 +1168,7 @@ get_all(Mod, ConfTests) ->
 		case code:which(Mod) of
 		    non_existing ->
 			list_to_atom(atom_to_list(Mod)++
-					 " can not be compiled or loaded");
+					 " cannot be compiled or loaded");
 		    _ ->
 			list_to_atom(atom_to_list(Mod)++":all/0 is missing")
 		end,
@@ -1181,7 +1181,7 @@ get_all(Mod, ConfTests) ->
 		    ErrStr = io_lib:format("~n*** ERROR *** "
 					   "~w:all/0 failed: ~tp~n",
 					   [Mod,ExitReason]),
-		    io:format(?def_gl, ErrStr, []),
+		    io:format(?def_gl, "~ts", [ErrStr]),
 		    %% save the error info so it doesn't get printed twice
 		    ct_util:set_testdata_async({{error_in_suite,Mod},
 						ExitReason});
diff --git a/lib/common_test/src/ct_logs.erl b/lib/common_test/src/ct_logs.erl
index 07a1693d5d..814b80b8bd 100644
--- a/lib/common_test/src/ct_logs.erl
+++ b/lib/common_test/src/ct_logs.erl
@@ -542,7 +542,7 @@ tc_print(Category,Importance,Format,Args,Opts) ->
                     undefined -> atom_to_list(Category);
                     Hd        -> Hd
                 end,
-            Str = lists:concat([get_header(Heading),Format,"\n\n"]),
+            Str = lists:flatten([get_header(Heading),Format,"\n\n"]),
             try
                 io:format(?def_gl, Str, Args)
             catch
@@ -935,7 +935,7 @@ create_io_fun(FromPid, CtLogFd, EscChars) ->
 		    {_HdOrFt,S,A} -> {false,S,A};
 		    {S,A}         -> {true,S,A}
 		end,
-	    try io_lib:format(Str, Args) of
+	    try io_lib:format(lists:flatten(Str), Args) of
 		IoStr when Escapable, EscChars, IoList == [] ->
 		    escape_chars(IoStr);
 		IoStr when Escapable, EscChars ->
@@ -1138,10 +1138,10 @@ set_evmgr_gl(GL) ->
 
 open_ctlog(MiscIoName) ->
     {ok,Fd} = file:open(?ct_log_name,[write,{encoding,utf8}]),
-    io:format(Fd, header("Common Test Framework Log", {[],[1,2],[]}), []),
+    io:format(Fd, "~ts", [header("Common Test Framework Log", {[],[1,2],[]})]),
     case file:consult(ct_run:variables_file_name("../")) of
 	{ok,Vars} ->
-	    io:format(Fd, config_table(Vars), []);
+	    io:format(Fd, "~ts", [config_table(Vars)]);
 	{error,Reason} ->
 	    {ok,Cwd} = file:get_cwd(),
 	    Dir = filename:dirname(Cwd),
@@ -1213,7 +1213,7 @@ print_style_error(Fd, IoFormat, StyleSheet, Reason) ->
 
 close_ctlog(Fd) ->
     io:format(Fd, "\n</pre>\n", []),
-    io:format(Fd, [xhtml("<br><br>\n", "<br /><br />\n") | footer()], []),
+    io:format(Fd, "~ts", [[xhtml("<br><br>\n", "<br /><br />\n") | footer()]]),
     ok = file:close(Fd).
 
 %%%-----------------------------------------------------------------
diff --git a/lib/common_test/src/ct_master.erl b/lib/common_test/src/ct_master.erl
index fd33ee2280..9fc169789c 100644
--- a/lib/common_test/src/ct_master.erl
+++ b/lib/common_test/src/ct_master.erl
@@ -350,7 +350,7 @@ master_loop(#state{node_ctrl_pids=[],
 			  io_lib:format("~-40.40.*ts~tp\n",
 					[$_,atom_to_list(Node),Result])
 		  end,lists:reverse(Finished)),
-    log(all,"TEST RESULTS",Str,[]),
+    log(all,"TEST RESULTS","~ts", [Str]),
     log(all,"Info","Updating log files",[]),
     refresh_logs(LogDirs,[]),
     
@@ -574,7 +574,7 @@ refresh_logs([],Refreshed) ->
 			  io_lib:format("Refreshing logs in ~tp... ~tp",
 					[D,Result])
 		  end,Refreshed),
-    log(all,"Info",Str,[]).
+    log(all,"Info","~ts", [Str]).
 
 %%%-----------------------------------------------------------------
 %%% NODE CONTROLLER, runs and controls tests on a test node.
diff --git a/lib/common_test/src/ct_netconfc.erl b/lib/common_test/src/ct_netconfc.erl
index 29188a648e..6a758c4ea3 100644
--- a/lib/common_test/src/ct_netconfc.erl
+++ b/lib/common_test/src/ct_netconfc.erl
@@ -583,7 +583,7 @@ get_config(Client, Source, Filter, Timeout) ->
 -spec edit_config(Client, Target, Config) -> Result when
       Client :: client(),
       Target :: netconf_db(),
-      Config :: simple_xml(),
+      Config :: simple_xml() | [simple_xml()],
       Result :: ok | {error,error_reason()}.
 edit_config(Client, Target, Config) ->
     edit_config(Client, Target, Config, ?DEFAULT_TIMEOUT).
@@ -591,7 +591,7 @@ edit_config(Client, Target, Config) ->
 -spec edit_config(Client, Target, Config, OptParams) -> Result when
       Client :: client(),
       Target :: netconf_db(),
-      Config :: simple_xml(),
+      Config :: simple_xml() | [simple_xml()],
       OptParams :: [simple_xml()],
       Result :: ok | {error,error_reason()};
                  (Client, Target, Config, Timeout) -> Result when
@@ -608,10 +608,12 @@ edit_config(Client, Target, Config, OptParams) when is_list(OptParams) ->
 -spec edit_config(Client, Target, Config, OptParams, Timeout) -> Result when
       Client :: client(),
       Target :: netconf_db(),
-      Config :: simple_xml(),
+      Config :: simple_xml() | [simple_xml()],
       OptParams :: [simple_xml()],
       Timeout :: timeout(),
       Result :: ok | {error,error_reason()}.
+edit_config(Client, Target, Config, OptParams, Timeout) when not is_list(Config)->
+    edit_config(Client, Target, [Config], OptParams, Timeout);
 edit_config(Client, Target, Config, OptParams, Timeout) ->
     call(Client, {send_rpc_op, edit_config, [Target,Config,OptParams], Timeout}).
 
@@ -1113,7 +1115,7 @@ encode_rpc_operation(get,[Filter]) ->
 encode_rpc_operation(get_config,[Source,Filter]) ->
     {'get-config',[{source,[Source]}] ++ filter(Filter)};
 encode_rpc_operation(edit_config,[Target,Config,OptParams]) ->
-    {'edit-config',[{target,[Target]}] ++ OptParams ++ [{config,[Config]}]};
+    {'edit-config',[{target,[Target]}] ++ OptParams ++ [{config,Config}]};
 encode_rpc_operation(delete_config,[Target]) ->
     {'delete-config',[{target,[Target]}]};
 encode_rpc_operation(copy_config,[Target,Source]) ->
diff --git a/lib/common_test/src/ct_release_test.erl b/lib/common_test/src/ct_release_test.erl
index 60d17f43dc..ac3dcab7c9 100644
--- a/lib/common_test/src/ct_release_test.erl
+++ b/lib/common_test/src/ct_release_test.erl
@@ -152,10 +152,10 @@
 %% returned configuration must therefore also be returned from
 %% the calling `init_per_*'.
 %%
-%% If the initialization fails, e.g. if a required release can
-%% not be found, the function returns `{skip,Reason}'. In
+%% If the initialization fails, e.g. if a required release
+%% cannot be found, the function returns `{skip,Reason}'. In
 %% this case the other test support functions in this mudule
-%% can not be used.
+%% cannot be used.
 %%
 %% Example:
 %%
@@ -426,7 +426,7 @@ init_upgrade_test(Level) ->
     case OldRel of
 	false ->
 	    ct:log("Release ~tp is not available."
-		   " Upgrade on '~p' level can not be tested.",
+		   " Upgrade on '~p' level cannot be tested.",
 		   [FromVsn,Level]),
 	    undefined;
 	_ ->
@@ -528,7 +528,7 @@ target_system(Apps,CreateDir,InstallDir,{FromVsn,_,AllAppsVsns,Path}) ->
 				     {path,Path}]]),
 
     %% Unpack the tar to complete the installation
-    erl_tar:extract(RelName ++ ".tar.gz", [{cwd, InstallDir}, compressed]),
+    ok = erl_tar:extract(RelName ++ ".tar.gz", [{cwd, InstallDir}, compressed]),
 
     %% Add bin and log dirs
     BinDir = filename:join([InstallDir, "bin"]),
@@ -554,11 +554,11 @@ target_system(Apps,CreateDir,InstallDir,{FromVsn,_,AllAppsVsns,Path}) ->
 
     %% create start_erl.data, sys.config and start.src
     StartErlData = filename:join([InstallDir, "releases", "start_erl.data"]),
-    write_file(StartErlData, io_lib:fwrite("~s ~s~n", [ErtsVsn, FromVsn])),
+    ok = write_file(StartErlData, io_lib:fwrite("~s ~s~n", [ErtsVsn, FromVsn])),
     SysConfig = filename:join([InstallDir, "releases", FromVsn, "sys.config"]),
-    write_file(SysConfig, "[]."),
+    ok = write_file(SysConfig, "[]."),
     StartSrc = filename:join(ErtsBinDir,"start.src"),
-    write_file(StartSrc,start_script()),
+    ok = write_file(StartSrc,start_script()),
     ok = file:change_mode(StartSrc,8#0755),
 
     %% Make start_erl executable
@@ -620,7 +620,7 @@ upgrade_system(Apps, FromRel, CreateDir, InstallDir, {_,ToVsn,_,_}) ->
 			      [{path,[FromPath]},
 			       {outdir,CreateDir}]]),
     SysConfig = filename:join([CreateDir, "sys.config"]),
-    write_file(SysConfig, "[]."),
+    ok = write_file(SysConfig, "[]."),
 
     ok = systools(make_tar,[RelName,[{erts,code:root_dir()}]]),
 
@@ -858,7 +858,7 @@ subst_file(Src, Dest, Vars, Opts) ->
     {ok, Bin} = file:read_file(Src),
     Conts = unicode:characters_to_list(Bin),
     NConts = subst(Conts, Vars),
-    write_file(Dest, NConts),
+    ok = write_file(Dest, NConts),
     case lists:member(preserve, Opts) of
         true ->
             {ok, FileInfo} = file:read_file_info(Src),
diff --git a/lib/common_test/src/ct_repeat.erl b/lib/common_test/src/ct_repeat.erl
index 8b1c7d47bb..b97c6e59e7 100644
--- a/lib/common_test/src/ct_repeat.erl
+++ b/lib/common_test/src/ct_repeat.erl
@@ -278,7 +278,7 @@ log_loop_info(Args) ->
 		    ForceStop ->
 			io_lib:format("force_stop is set to: ~w",[ForceStop])
 		end,			
-	    ct_logs:log("Test loop info",LogStr1++LogStr2++LogStr3++LogStr4,[])
+	    ct_logs:log("Test loop info","~ts", [LogStr1++LogStr2++LogStr3++LogStr4])
     end.
 
 ts(Secs) ->
diff --git a/lib/common_test/src/ct_run.erl b/lib/common_test/src/ct_run.erl
index c9d406f1fd..960252a6fe 100644
--- a/lib/common_test/src/ct_run.erl
+++ b/lib/common_test/src/ct_run.erl
@@ -2345,18 +2345,24 @@ start_cover(Opts=#opts{coverspec=CovData,cover_stop=CovStop},LogDir) ->
      CovImport,
      _CovExport,
      #cover{app        = CovApp,
+            local_only = LocalOnly,
 	    level      = CovLevel,
 	    excl_mods  = CovExcl,
 	    incl_mods  = CovIncl,
 	    cross      = CovCross,
 	    src        = _CovSrc}} = CovData,
+    case LocalOnly of
+        true -> cover:local_only();
+        false -> ok
+    end,
     ct_logs:log("COVER INFO",
 		"Using cover specification file: ~ts~n"
 		"App: ~w~n"
+                "Local only: ~w~n"
 		"Cross cover: ~w~n"
 		"Including ~w modules~n"
 		"Excluding ~w modules",
-		[CovFile,CovApp,CovCross,
+		[CovFile,CovApp,LocalOnly,CovCross,
 		 length(CovIncl),length(CovExcl)]),
 
     %% Tell test_server to print a link in its coverlog
diff --git a/lib/common_test/src/ct_telnet.erl b/lib/common_test/src/ct_telnet.erl
index f9abecfd38..219f58dcf5 100644
--- a/lib/common_test/src/ct_telnet.erl
+++ b/lib/common_test/src/ct_telnet.erl
@@ -194,6 +194,15 @@ send(Connection,Cmd,Opts) ->
 
 check_send_opts([{newline,Bool}|Opts]) when is_boolean(Bool) ->
     check_send_opts(Opts);
+check_send_opts([{newline,String}|Opts]) when is_list(String) ->
+    case lists:all(fun(I) when is_integer(I), I>=0, I=<127 -> true;
+                      (_) -> false
+                   end, String) of
+        true ->
+            check_send_opts(Opts);
+        false ->
+            {error,{invalid_option,{newline,String}}}
+    end;
 check_send_opts([Invalid|_]) ->
     {error,{invalid_option,Invalid}};
 check_send_opts([]) ->
@@ -211,10 +220,16 @@ expect(Connection,Patterns) ->
 
 expect(Connection,Patterns,Opts) ->
     case get_handle(Connection) of
-	{ok,Pid} ->
-	    call(Pid,{expect,Patterns,Opts});
-	Error ->
-	    Error
+        {ok,Pid} ->
+            case call(Pid,{expect,Patterns,Opts}) of
+                {error,Reason} when element(1,Reason)==bad_pattern ->
+                    %% Faulty user input - should fail the test case
+                    exit({Reason,{?MODULE,?FUNCTION_NAME,3}});
+                Other ->
+                    Other
+            end;
+        Error ->
+            Error
     end.
 
 %%%=================================================================
@@ -674,60 +689,68 @@ silent_teln_expect(Name,Pid,Data,Pattern,Prx,Opts) ->
 %% 3b) Repeat (sequence): 2) is repeated either N times or until a
 %% halt condition is fulfilled.
 teln_expect(Name,Pid,Data,Pattern0,Prx,Opts) ->
-    HaltPatterns =
+    HaltPatterns0 =
 	case get_ignore_prompt(Opts) of
 	    true ->
 		get_haltpatterns(Opts);
 	    false ->
 		[prompt | get_haltpatterns(Opts)]
 	end,
-
-    PromptCheck = get_prompt_check(Opts),
-
-    {WaitForPrompt,Pattern1,Opts1} = wait_for_prompt(Pattern0,Opts),
-
-    Seq = get_seq(Opts1),
-    Pattern2 = convert_pattern(Pattern1,Seq),
-    {IdleTimeout,TotalTimeout} = get_timeouts(Opts1),
-
-    EO = #eo{teln_pid=Pid,
-	     prx=Prx,
-	     idle_timeout=IdleTimeout,
-	     total_timeout=TotalTimeout,
-	     seq=Seq,
-	     haltpatterns=HaltPatterns,
-	     prompt_check=PromptCheck},
+    case convert_pattern(HaltPatterns0,false) of
+        {ok,HaltPatterns} ->
+            {WaitForPrompt,Pattern1,Opts1} = wait_for_prompt(Pattern0,Opts),
+            Seq = get_seq(Opts1),
+            case convert_pattern(Pattern1,Seq) of
+                {ok,Pattern2} ->
+                    {IdleTimeout,TotalTimeout} = get_timeouts(Opts1),
+                    PromptCheck = get_prompt_check(Opts1),
+
+                    EO = #eo{teln_pid=Pid,
+                             prx=Prx,
+                             idle_timeout=IdleTimeout,
+                             total_timeout=TotalTimeout,
+                             seq=Seq,
+                             haltpatterns=HaltPatterns,
+                             prompt_check=PromptCheck},
     
-    case get_repeat(Opts1) of
-	false ->
-	    case teln_expect1(Name,Pid,Data,Pattern2,[],EO) of
-		{ok,Matched,Rest} when WaitForPrompt ->
-		    case lists:reverse(Matched) of
-			[{prompt,_},Matched1] ->
-			    {ok,Matched1,Rest};
-			[{prompt,_}|Matched1] ->
-			    {ok,lists:reverse(Matched1),Rest}
-		    end;
-		{ok,Matched,Rest} ->
-		    {ok,Matched,Rest};
-		{halt,Why,Rest} ->
-		    {error,Why,Rest};
-		{error,Reason} ->
-		    {error,Reason}
-	    end;
-	N ->
-	    EO1 = EO#eo{repeat=N},
-	    repeat_expect(Name,Pid,Data,Pattern2,[],EO1)
+                    case get_repeat(Opts1) of
+                        false ->
+                            case teln_expect1(Name,Pid,Data,Pattern2,[],EO) of
+                                {ok,Matched,Rest} when WaitForPrompt ->
+                                    case lists:reverse(Matched) of
+                                        [{prompt,_},Matched1] ->
+                                            {ok,Matched1,Rest};
+                                        [{prompt,_}|Matched1] ->
+                                            {ok,lists:reverse(Matched1),Rest}
+                                    end;
+                                {ok,Matched,Rest} ->
+                                    {ok,Matched,Rest};
+                                {halt,Why,Rest} ->
+                                    {error,Why,Rest};
+                                {error,Reason} ->
+                                    {error,Reason}
+                            end;
+                        N ->
+                            EO1 = EO#eo{repeat=N},
+                            repeat_expect(Name,Pid,Data,Pattern2,[],EO1)
+                    end;
+               Error ->
+                    Error
+            end;
+        Error ->
+            Error
     end.
 
-convert_pattern(Pattern,Seq) 
-  when is_list(Pattern) and not is_integer(hd(Pattern)) ->
-    case Seq of
-	true -> Pattern;
-	false -> rm_dupl(Pattern,[])
-    end;
+convert_pattern(Pattern0,Seq)
+  when Pattern0==[] orelse (is_list(Pattern0) and not is_integer(hd(Pattern0))) ->
+    Pattern =
+        case Seq of
+            true -> Pattern0;
+            false -> rm_dupl(Pattern0,[])
+        end,
+    compile_pattern(Pattern,[]);
 convert_pattern(Pattern,_Seq) ->
-    [Pattern].
+    compile_pattern([Pattern],[]).
 
 rm_dupl([P|Ps],Acc) ->
     case lists:member(P,Acc) of
@@ -739,6 +762,25 @@ rm_dupl([P|Ps],Acc) ->
 rm_dupl([],Acc) ->
     lists:reverse(Acc).
 
+compile_pattern([prompt|Patterns],Acc) ->
+    compile_pattern(Patterns,[prompt|Acc]);
+compile_pattern([{prompt,_}=P|Patterns],Acc) ->
+    compile_pattern(Patterns,[P|Acc]);
+compile_pattern([{Tag,Pattern}|Patterns],Acc) ->
+    try re:compile(Pattern,[unicode]) of
+        {ok,MP} -> compile_pattern(Patterns,[{Tag,MP}|Acc]);
+        {error,Error} -> {error,{bad_pattern,{Tag,Pattern},Error}}
+    catch error:badarg -> {error,{bad_pattern,{Tag,Pattern}}}
+    end;
+compile_pattern([Pattern|Patterns],Acc) ->
+    try re:compile(Pattern,[unicode]) of
+        {ok,MP} -> compile_pattern(Patterns,[MP|Acc]);
+        {error,Error} -> {error,{bad_pattern,Pattern,Error}}
+    catch error:badarg -> {error,{bad_pattern,Pattern}}
+    end;
+compile_pattern([],Acc) ->
+    {ok,lists:reverse(Acc)}.
+
 get_timeouts(Opts) ->
     {case lists:keysearch(idle_timeout,1,Opts) of
 	 {value,{_,T}} ->
@@ -772,7 +814,7 @@ get_seq(Opts) ->
 get_haltpatterns(Opts) ->
     case lists:keysearch(halt,1,Opts) of
 	{value,{halt,HaltPatterns}} ->
-	    convert_pattern(HaltPatterns,false);
+	    HaltPatterns;
 	false ->
 	    []
     end.
@@ -1068,7 +1110,7 @@ match_line(Name,Pid,Line,[{prompt,PromptType}|Patterns],FoundPrompt,Term,
   when PromptType=/=FoundPrompt ->
     match_line(Name,Pid,Line,Patterns,FoundPrompt,Term,EO,RetTag);
 match_line(Name,Pid,Line,[{Tag,Pattern}|Patterns],FoundPrompt,Term,EO,RetTag) ->
-    case re:run(Line,Pattern,[{capture,all,list},unicode]) of
+    case re:run(Line,Pattern,[{capture,all,list}]) of
 	nomatch ->
 	    match_line(Name,Pid,Line,Patterns,FoundPrompt,Term,EO,RetTag);
 	{match,Match} ->
@@ -1076,7 +1118,7 @@ match_line(Name,Pid,Line,[{Tag,Pattern}|Patterns],FoundPrompt,Term,EO,RetTag) ->
 	    {RetTag,{Tag,Match}}
     end;
 match_line(Name,Pid,Line,[Pattern|Patterns],FoundPrompt,Term,EO,RetTag) ->
-    case re:run(Line,Pattern,[{capture,all,list},unicode]) of
+    case re:run(Line,Pattern,[{capture,all,list}]) of
 	nomatch ->
 	    match_line(Name,Pid,Line,Patterns,FoundPrompt,Term,EO,RetTag);
 	{match,Match} ->
@@ -1085,7 +1127,7 @@ match_line(Name,Pid,Line,[Pattern|Patterns],FoundPrompt,Term,EO,RetTag) ->
     end;
 match_line(Name,Pid,Line,[],FoundPrompt,Term,EO,match) ->
     match_line(Name,Pid,Line,EO#eo.haltpatterns,FoundPrompt,Term,EO,halt);
-%% print any terminated line that can not be matched
+%% print any terminated line that cannot be matched
 match_line(Name,Pid,Line,[],_FoundPrompt,true,_EO,halt) ->
     log(name_or_pid(Name,Pid),"       ~ts",[Line]),
     nomatch;
diff --git a/lib/common_test/src/ct_telnet_client.erl b/lib/common_test/src/ct_telnet_client.erl
index 76e4b9ea70..007477c855 100644
--- a/lib/common_test/src/ct_telnet_client.erl
+++ b/lib/common_test/src/ct_telnet_client.erl
@@ -101,9 +101,11 @@ close(Pid) ->
     end.	    
 
 send_data(Pid, Data) ->
-    send_data(Pid, Data, true).
+    send_data(Pid, Data, "\n").
 send_data(Pid, Data, true) ->
-    send_data(Pid, Data++"\n", false);
+    send_data(Pid, Data, "\n");
+send_data(Pid, Data, Newline) when is_list(Newline) ->
+    send_data(Pid, Data++Newline, false);
 send_data(Pid, Data, false) ->
     Pid ! {send_data, Data},
     ok.
diff --git a/lib/common_test/src/ct_util.erl b/lib/common_test/src/ct_util.erl
index d8fd401a64..9f489e9bfb 100644
--- a/lib/common_test/src/ct_util.erl
+++ b/lib/common_test/src/ct_util.erl
@@ -192,7 +192,10 @@ do_start(Parent, Mode, LogDir, Verbosity) ->
 	    ok
     end,
 
-    ct_default_gl:start_link(group_leader()),
+    case ct_default_gl:start_link(group_leader()) of
+        {ok, _} -> ok;
+        ignore -> ok
+    end,
 
     {StartTime,TestLogDir} = ct_logs:init(Mode, Verbosity),
 
diff --git a/lib/common_test/src/ct_util.hrl b/lib/common_test/src/ct_util.hrl
index 039c8168ec..d5c93d05ba 100644
--- a/lib/common_test/src/ct_util.hrl
+++ b/lib/common_test/src/ct_util.hrl
@@ -62,6 +62,7 @@
 		   merge_tests=true}).
 
 -record(cover, {app=none,
+                local_only=false,
 		level=details,
 		excl_mods=[],
 		incl_mods=[],
diff --git a/lib/common_test/src/cth_log_redirect.erl b/lib/common_test/src/cth_log_redirect.erl
index 4980d1ee4b..fe869a4373 100644
--- a/lib/common_test/src/cth_log_redirect.erl
+++ b/lib/common_test/src/cth_log_redirect.erl
@@ -124,7 +124,8 @@ start_log_handler() ->
                   shutdown=>2000,
                   type=>worker,
                   modules=>[?MODULE]},
-            {ok,_} = supervisor:start_child(logger_sup,ChildSpec);
+            {ok,_} = supervisor:start_child(logger_sup,ChildSpec),
+            ok;
         _Pid ->
             ok
     end,
@@ -193,10 +194,10 @@ handle_call({log,
     case LogFunc of
         tc_log ->
             ct_logs:tc_log(Category, ?STD_IMPORTANCE,
-                           Header, String, [], []);
+                           Header, "~ts", [String], []);
         tc_log_async ->
             ct_logs:tc_log_async(sasl, ?STD_IMPORTANCE,
-                                 Header, String, [])
+                                 Header, "~ts", [String])
     end,
     {reply,ok,State};
 
@@ -260,34 +261,34 @@ handle_remote_events(Bool) ->
 format_header(#eh_state{curr_suite = undefined,
 			curr_group = undefined,
 			curr_func = undefined}) ->
-    io_lib:format("System report", []);
+    lists:flatten(io_lib:format("System report", []));
 
 format_header(#eh_state{curr_suite = Suite,
 			curr_group = undefined,
 			curr_func = undefined}) ->
-    io_lib:format("System report during ~w", [Suite]);
+    lists:flatten(io_lib:format("System report during ~w", [Suite]));
 
 format_header(#eh_state{curr_suite = Suite,
 			curr_group = undefined,
 			curr_func = TcOrConf}) ->
-    io_lib:format("System report during ~w:~tw/1",
-		  [Suite,TcOrConf]);
+    lists:flatten(io_lib:format("System report during ~w:~tw/1",
+                                [Suite,TcOrConf]));
 
 format_header(#eh_state{curr_suite = Suite,
 			curr_group = Group,
 			curr_func = Conf}) when Conf == init_per_group;
 						Conf == end_per_group ->
-    io_lib:format("System report during ~w:~w/2 for ~tw",
-		  [Suite,Conf,Group]);
+    lists:flatten(io_lib:format("System report during ~w:~w/2 for ~tw",
+                                [Suite,Conf,Group]));
 
 format_header(#eh_state{curr_suite = Suite,
 			curr_group = Group,
 			parallel_tcs = true}) ->
-    io_lib:format("System report during ~tw in ~w",
-		  [Group,Suite]);
+    lists:flatten(io_lib:format("System report during ~tw in ~w",
+                                [Group,Suite]));
 
 format_header(#eh_state{curr_suite = Suite,
 			curr_group = Group,
 			curr_func = TC}) ->
-    io_lib:format("System report during ~w:~tw/1 in ~tw",
-		  [Suite,TC,Group]).
+    lists:flatten(io_lib:format("System report during ~w:~tw/1 in ~tw",
+                                [Suite,TC,Group])).
diff --git a/lib/common_test/src/cth_surefire.erl b/lib/common_test/src/cth_surefire.erl
index b0742717ae..c9b4cb10c6 100644
--- a/lib/common_test/src/cth_surefire.erl
+++ b/lib/common_test/src/cth_surefire.erl
@@ -235,7 +235,7 @@ close_suite(#state{ test_cases = TCs, url_base = UrlBase } = State) ->
 terminate(State = #state{ test_cases = [] }) ->
     {ok,D} = file:open(State#state.filepath,[write,{encoding,utf8}]),
     io:format(D, "<?xml version=\"1.0\" encoding= \"UTF-8\" ?>", []),
-    io:format(D, to_xml(State), []),
+    io:format(D, "~ts", [to_xml(State)]),
     catch file:sync(D),
     catch file:close(D);
 terminate(State) ->
diff --git a/lib/common_test/src/test_server.erl b/lib/common_test/src/test_server.erl
index a896a0551b..9eda3f2152 100644
--- a/lib/common_test/src/test_server.erl
+++ b/lib/common_test/src/test_server.erl
@@ -850,17 +850,23 @@ spawn_fw_call(Mod,EPTC={end_per_testcase,Func},EndConf,Pid,
 				"WARNING: end_per_testcase failed!</font>",
 			    {died,W}
 		    end,
-		try do_end_tc_call(Mod,EPTC,{Pid,Report,[EndConf]}, Why) of
-		    _ -> ok
-		catch
-		    _:FwEndTCErr ->
-			exit({fw_notify_done,end_tc,FwEndTCErr})
-		end,
-		FailLoc = proplists:get_value(tc_fail_loc, EndConf),
+                FailLoc0 = proplists:get_value(tc_fail_loc, EndConf),
+                {RetVal1,FailLoc} =
+                    try do_end_tc_call(Mod,EPTC,{Pid,Report,[EndConf]}, Why) of
+                        Why ->
+                            {RetVal,FailLoc0};
+                        {failed,_} = R ->
+                            {R,[{Mod,Func}]};
+                        R ->
+                            {R,FailLoc0}
+                    catch
+                        _:FwEndTCErr ->
+                            exit({fw_notify_done,end_tc,FwEndTCErr})
+                    end,
 		%% finished, report back (if end_per_testcase fails, a warning
 		%% should be printed as part of the comment)
 		SendTo ! {self(),fw_notify_done,
-			  {Time,RetVal,FailLoc,[],Warn}}
+			  {Time,RetVal1,FailLoc,[],Warn}}
 	end,
     spawn_link(FwCall);
 
@@ -902,14 +908,25 @@ spawn_fw_call(Mod,Func,CurrConf,Pid,Error,Loc,SendTo) ->
 			      FwErrorNotifyErr})
 		end,
 		Conf = [{tc_status,{failed,Error}}|CurrConf],
-		try do_end_tc_call(Mod,EndTCFunc,{Pid,Error,[Conf]},Error) of
-		    _ -> ok
-		catch
-		    _:FwEndTCErr ->
-			exit({fw_notify_done,end_tc,FwEndTCErr})
-		end,
+                {Time,RetVal,Loc1} =
+                    try do_end_tc_call(Mod,EndTCFunc,{Pid,Error,[Conf]},Error) of
+                        Error ->
+                            {died, Error, Loc};
+                        {failed,Reason} = NewReturn ->
+                            fw_error_notify(Mod,Func1,Conf,Reason),
+                            {died, NewReturn, [{Mod,Func}]};
+                        NewReturn ->
+                            T = case Error of
+                                    {timetrap_timeout,TT} -> TT;
+                                    _ -> 0
+                                end,
+                            {T, NewReturn, Loc}
+                    catch
+                        _:FwEndTCErr ->
+                            exit({fw_notify_done,end_tc,FwEndTCErr})
+                    end,
 		%% finished, report back
-		SendTo ! {self(),fw_notify_done,{died,Error,Loc,[],undefined}}
+		SendTo ! {self(),fw_notify_done,{Time,RetVal,Loc1,[],undefined}}
 	end,
     spawn_link(FwCall).
 
diff --git a/lib/common_test/src/test_server_ctrl.erl b/lib/common_test/src/test_server_ctrl.erl
index 8bd6cd583a..1518c6e8d6 100644
--- a/lib/common_test/src/test_server_ctrl.erl
+++ b/lib/common_test/src/test_server_ctrl.erl
@@ -1393,7 +1393,7 @@ temp_nodename([Chr|Base], Acc) ->
 %%
 %% Counts the test cases that are about to run and returns that number.
 %% If there's a conf group in TestSpec with a repeat property, the total number
-%% of cases can not be calculated and NoOfCases = unknown.
+%% of cases cannot be calculated and NoOfCases = unknown.
 count_test_cases(TopCases, SkipCases) when is_list(TopCases) ->
     case collect_all_cases(TopCases, SkipCases) of
 	{error,_Why} = Error ->
@@ -1558,7 +1558,7 @@ do_test_cases(TopCases, SkipCases,
 			 Html1}
 		end,
 
-	    print(html, Header),
+	    print(html, "~ts", [Header]),
 
 	    print(html, xhtml("<p>", "<h4>")),
 	    print_timestamp(html, "Test started at "),
@@ -1605,10 +1605,10 @@ do_test_cases(TopCases, SkipCases,
 		  [?suitelog_name,CoverLog,?unexpected_io_log]),
 	    print(html,
 		  "<p>~ts</p>\n" ++
-		  xhtml(["<table bgcolor=\"white\" border=\"3\" cellpadding=\"5\">\n",
-			 "<thead>\n"],
-			["<table id=\"",?sortable_table_name,"\">\n",
-			 "<thead>\n"]) ++
+		  xhtml("<table bgcolor=\"white\" border=\"3\" cellpadding=\"5\">\n" ++
+			 "<thead>\n",
+			"<table id=\"" ++ ?sortable_table_name ++ "\">\n" ++
+			 "<thead>\n") ++
 		      "<tr><th>Num</th><th>Module</th><th>Group</th>" ++
 		      "<th>Case</th><th>Log</th><th>Time</th><th>Result</th>" ++
 		      "<th>Comment</th></tr>\n</thead>\n<tbody>\n",
@@ -3306,7 +3306,8 @@ skip_case1(Type, CaseNum, Mod, Func, Comment, Mode) ->
        true ->
 	    print(2,"*** Skipping test case #~w ~tw ***", [CaseNum,{Mod,Func}])
     end,
-    TR = xhtml("<tr valign=\"top\">", ["<tr class=\"",odd_or_even(),"\">"]),	       
+    TR = xhtml("<tr valign=\"top\">",
+               "<tr class=\"" ++ odd_or_even() ++ "\">"),
     GroupName =	case get_name(Mode) of
 		    undefined -> "";
 		    Name      -> cast_to_list(Name)
@@ -3796,8 +3797,8 @@ run_test_case1(Ref, Num, Mod, Func, Args, RunInit,
     end,
 
     print(minor,
-	  escape_chars(io_lib:format("Config value:\n\n    ~tp\n", [Args2Print])),
-	  []),
+          "~ts",
+	  [escape_chars(io_lib:format("Config value:\n\n    ~tp\n", [Args2Print]))]),
     print(minor, "Current directory is ~tp\n", [Cwd]),
 
     GrNameStr =	case GrName of
@@ -3806,7 +3807,7 @@ run_test_case1(Ref, Num, Mod, Func, Args, RunInit,
 		end,
     print(major, "=started       ~s", [lists:flatten(timestamp_get(""))]),
     {{Col0,Col1},Style} = get_font_style((RunInit==run_init), Mode),
-    TR = xhtml("<tr valign=\"top\">", ["<tr class=\"",odd_or_even(),"\">"]),
+    TR = xhtml("<tr valign=\"top\">", "<tr class=\"" ++ odd_or_even() ++ "\">"),
     EncMinorBase = uri_encode(MinorBase),
     print(html,	TR ++ "<td>" ++ Col0 ++ "~ts" ++ Col1 ++ "</td>"
 	  "<td>" ++ Col0 ++ "~w" ++ Col1 ++ "</td>"
@@ -3831,7 +3832,7 @@ run_test_case1(Ref, Num, Mod, Func, Args, RunInit,
     print(minor, "<a name=\"end\"></a>", [], internal_raw),
     print(minor, "\n", [], internal_raw),
     print_timestamp(minor, "Ended at "),
-    print(major, "=ended         ~s", [lists:flatten(timestamp_get(""))]),
+    print(major, "=ended         ~s", [timestamp_get("")]),
 
     do_unless_parallel(Main, fun() -> file:set_cwd(filename:dirname(TSDir)) end),
 
@@ -4075,9 +4076,9 @@ progress(failed, CaseNum, Mod, Func, GrName, Loc, {testcase_aborted,Reason}, _T,
     FormatLoc = test_server_sup:format_loc(Loc),
     print(minor, "=== Location: ~ts", [FormatLoc]),
     print(minor,
-	  escape_chars(io_lib:format("=== Reason: {testcase_aborted,~tp}",
-				     [Reason])),
-	  []),
+          "~ts",
+	  [escape_chars(io_lib:format("=== Reason: {testcase_aborted,~tp}",
+				     [Reason]))]),
     failed;
 
 progress(failed, CaseNum, Mod, Func, GrName, unknown, Reason, Time,
@@ -4115,8 +4116,8 @@ progress(failed, CaseNum, Mod, Func, GrName, unknown, Reason, Time,
     print(minor, "=== Location: ~w", [unknown]),
     {FStr,FormattedReason} = format_exception(Reason),
     print(minor,
-	  escape_chars(io_lib:format("=== Reason: " ++ FStr, [FormattedReason])),
-	  []),
+          "~ts",
+	  [escape_chars(io_lib:format("=== Reason: " ++ FStr, [FormattedReason]))]),
     failed;
 
 progress(failed, CaseNum, Mod, Func, GrName, Loc, Reason, Time,
@@ -4150,8 +4151,9 @@ progress(failed, CaseNum, Mod, Func, GrName, Loc, Reason, Time,
     FormatLoc = test_server_sup:format_loc(LocMin),
     print(minor, "=== Location: ~ts", [FormatLoc]),
     {FStr,FormattedReason} = format_exception(Reason),
-    print(minor, "=== Reason: " ++
-	      escape_chars(io_lib:format(FStr, [FormattedReason])), []),
+    print(minor, "~ts",
+          ["=== Reason: " ++
+           escape_chars(io_lib:format(FStr, [FormattedReason]))]),
     failed;
 
 progress(ok, _CaseNum, Mod, Func, GrName, _Loc, RetVal, Time,
@@ -4184,8 +4186,8 @@ progress(ok, _CaseNum, Mod, Func, GrName, _Loc, RetVal, Time,
 	  "~ts</tr>\n",
 	  [TimeStr,Comment]),
     print(minor,
-	  escape_chars(io_lib:format("=== Returned value: ~tp", [RetVal])),
-	  []),
+          "~ts",
+	  [escape_chars(io_lib:format("=== Returned value: ~tp", [RetVal]))]),
     ok.
 
 %%--------------------------------------------------------------------
@@ -4542,7 +4544,7 @@ timestamp_get(Leader) ->
 
 timestamp_get_internal(Leader, Format) ->
     {YY,MM,DD,H,M,S} = time_get(),
-    io_lib:format(Format, [Leader,YY,MM,DD,H,M,S]).
+    lists:flatten(io_lib:format(Format, [Leader,YY,MM,DD,H,M,S])).
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %% time_get() -> {YY,MM,DD,H,M,S}
@@ -4906,7 +4908,7 @@ collect_files(Dir, Pattern, St, Mode) ->
 fullname_to_mod(Path) when is_list(Path) ->
     %% If this is called with a binary, then we are probably in +fnu
     %% mode and have found a beam file with name encoded as latin1. We
-    %% will let this crash since it can not work to load such a module
+    %% will let this crash since it cannot work to load such a module
     %% anyway. It should be removed or renamed!
     list_to_atom(filename:rootname(filename:basename(Path))).
 
diff --git a/lib/common_test/src/test_server_node.erl b/lib/common_test/src/test_server_node.erl
index ea7ad8538e..3ae4a047d8 100644
--- a/lib/common_test/src/test_server_node.erl
+++ b/lib/common_test/src/test_server_node.erl
@@ -656,9 +656,19 @@ find_release({unix,linux}, Rel) ->
 find_release(_, _) -> none.
 
 find_rel_linux(Rel) ->
-    case suse_release() of
-	none -> [];
-	SuseRel -> find_rel_suse(Rel, SuseRel)
+    try
+        case ubuntu_release() of
+            none -> none;
+            [UbuntuRel |_] -> throw(find_rel_ubuntu(Rel, UbuntuRel))
+        end,
+        case suse_release() of
+            none -> none;
+            SuseRel -> throw(find_rel_suse(Rel, SuseRel))
+        end,
+        []
+    catch
+        throw:Result ->
+            Result
     end.
 
 find_rel_suse(Rel, SuseRel) ->
@@ -735,6 +745,93 @@ suse_release(Fd) ->
 	    end
     end.
 
+find_rel_ubuntu(_Rel, UbuntuRel) when is_integer(UbuntuRel), UbuntuRel < 16 ->
+    [];
+find_rel_ubuntu(Rel, UbuntuRel) when is_integer(UbuntuRel) ->
+    Root = "/usr/local/otp/releases/ubuntu",
+    lists:foldl(fun (ChkUbuntuRel, Acc) ->
+                        find_rel_ubuntu_aux1(Rel, Root++integer_to_list(ChkUbuntuRel))
+                            ++ Acc
+                end,
+                [],
+                lists:seq(16, UbuntuRel)).
+
+find_rel_ubuntu_aux1(Rel, RootWc) ->
+    case erlang:system_info(wordsize) of
+	4 ->
+	    find_rel_ubuntu_aux2(Rel, RootWc++"_32");
+	8 ->
+	    find_rel_ubuntu_aux2(Rel, RootWc++"_64") ++
+		find_rel_ubuntu_aux2(Rel, RootWc++"_32")
+    end.
+
+find_rel_ubuntu_aux2(Rel, RootWc) ->
+    RelDir = filename:dirname(RootWc),
+    Pat = filename:basename(RootWc ++ "_" ++ Rel) ++ ".*",
+    case file:list_dir(RelDir) of
+	{ok,Dirs} ->
+	    case lists:filter(fun(Dir) ->
+				      case re:run(Dir, Pat, [unicode]) of
+					  nomatch -> false;
+					  _       -> true
+				      end
+			      end, Dirs) of
+		[] ->
+		    [];
+		[R|_] ->
+		    [filename:join([RelDir,R,"bin","erl"])]
+	    end;
+	_ ->
+	    []
+    end.
+
+ubuntu_release() ->
+    case file:open("/etc/lsb-release", [read]) of
+	{ok,Fd} ->
+	    try
+		ubuntu_release(Fd, undefined, undefined)
+	    after
+		file:close(Fd)
+	    end;
+	{error,_} -> none
+    end.
+
+ubuntu_release(_Fd, DistrId, Rel) when DistrId /= undefined,
+                                      Rel /= undefined ->
+    Ubuntu = case DistrId of
+                 "Ubuntu" -> true;
+                 "ubuntu" -> true;
+                 _ -> false
+             end,
+    case Ubuntu of
+        false -> none;
+        true -> Rel
+    end;
+ubuntu_release(Fd, DistroId, Rel) ->
+    case io:get_line(Fd, '') of
+	eof ->
+            none;
+	Line when is_list(Line) ->
+	    case re:run(Line, "^DISTRIB_ID=(\\w+)$",
+                        [{capture,all_but_first,list}]) of
+		{match,[NewDistroId]} ->
+                    ubuntu_release(Fd, NewDistroId, Rel);
+                nomatch ->
+                    case re:run(Line, "^DISTRIB_RELEASE=(\\d+(?:\\.\\d+)*)$",
+                                [{capture,all_but_first,list}]) of
+                        {match,[RelList]} ->
+                            NewRel = lists:map(fun (N) ->
+                                                       list_to_integer(N)
+                                               end,
+                                               string:lexemes(RelList, ".")),
+                            ubuntu_release(Fd, DistroId, NewRel);
+                        nomatch ->
+                            ubuntu_release(Fd, DistroId, Rel)
+                    end
+            end
+    end.
+
+
 unpack(Bin) ->
     {One,Term} = split_binary(Bin, 1),
     case binary_to_list(One) of
diff --git a/lib/common_test/test/ct_auto_compile_SUITE.erl b/lib/common_test/test/ct_auto_compile_SUITE.erl
index dface99b8f..f88f13c889 100644
--- a/lib/common_test/test/ct_auto_compile_SUITE.erl
+++ b/lib/common_test/test/ct_auto_compile_SUITE.erl
@@ -169,7 +169,7 @@ test_events(ac_flag) ->
      {?eh,start_info,{1,1,3}},
      {?eh,tc_start,{ct_framework,error_in_suite}},
      {?eh,tc_done,{ct_framework,error_in_suite,
-       {failed,{error,'bad_SUITE can not be compiled or loaded'}}}},
+       {failed,{error,'bad_SUITE cannot be compiled or loaded'}}}},
      {?eh,tc_start,{dummy_SUITE,init_per_suite}},
      {?eh,tc_done,{dummy_SUITE,init_per_suite,ok}},
      {?eh,test_stats,{1,1,{1,0}}},
@@ -186,7 +186,7 @@ test_events(ac_spec) ->
      {?eh,start_info,{1,1,3}},
      {?eh,tc_start,{ct_framework,error_in_suite}},
      {?eh,tc_done,{ct_framework,error_in_suite,
-       {failed,{error,'bad_SUITE can not be compiled or loaded'}}}},
+       {failed,{error,'bad_SUITE cannot be compiled or loaded'}}}},
      {?eh,tc_start,{dummy_SUITE,init_per_suite}},
      {?eh,tc_done,{dummy_SUITE,init_per_suite,ok}},
      {?eh,test_stats,{1,1,{1,0}}},
diff --git a/lib/common_test/test/ct_config_SUITE.erl b/lib/common_test/test/ct_config_SUITE.erl
index 5ffc735d6a..ec5278b96d 100644
--- a/lib/common_test/test/ct_config_SUITE.erl
+++ b/lib/common_test/test/ct_config_SUITE.erl
@@ -211,18 +211,12 @@ reformat_events(Events, EH) ->
 %%% Test related to 'localtime' will often fail if the test host is
 %%% time warping, so let's just skip the 'dynamic' tests then.
 skip_dynamic() ->
-    case os:getenv("TS_EXTRA_PLATFORM_LABEL") of
-	TSExtraPlatformLabel when is_list(TSExtraPlatformLabel) ->
-	    case string:find(TSExtraPlatformLabel,"TimeWarpingOS") of
-		nomatch -> false;
-		_ -> true
-	    end;
-	_ ->
-	    false
+    case string:find(os:getenv("TS_EXTRA_PLATFORM_LABEL", ""), "TimeWarpingOS") of
+	nomatch -> false;
+	_ -> true
     end.
 
 
-
 %%%-----------------------------------------------------------------
 %%% TEST EVENTS
 %%%-----------------------------------------------------------------
diff --git a/lib/common_test/test/ct_hooks_SUITE.erl b/lib/common_test/test/ct_hooks_SUITE.erl
index 0f5636a789..44b86b1dfe 100644
--- a/lib/common_test/test/ct_hooks_SUITE.erl
+++ b/lib/common_test/test/ct_hooks_SUITE.erl
@@ -84,7 +84,7 @@ all(suite) ->
        fail_post_suite_cth, skip_pre_suite_cth, skip_pre_end_cth,
        skip_pre_init_tc_cth,
        skip_post_suite_cth, recover_post_suite_cth, update_config_cth,
-       state_update_cth, options_cth, same_id_cth,
+       state_update_cth, update_result_cth, options_cth, same_id_cth,
        fail_n_skip_with_minimal_cth, prio_cth, no_config,
        no_init_suite_config, no_init_config, no_end_config,
        failed_sequence, repeat_force_stop, config_clash,
@@ -209,6 +209,10 @@ state_update_cth(Config) when is_list(Config) ->
     do_test(state_update_cth, "ct_cth_fail_one_skip_one_SUITE.erl",
 	    [state_update_cth,state_update_cth],Config).
 
+update_result_cth(Config) ->
+    do_test(update_result_cth, "ct_cth_update_result_post_end_tc_SUITE.erl",
+            [update_result_post_end_tc_cth],Config).
+
 options_cth(Config) when is_list(Config) ->
     do_test(options_cth, "ct_cth_empty_SUITE.erl",
 	    [{empty_cth,[test]}],Config).
@@ -1099,6 +1103,106 @@ test_events(state_update_cth) ->
      {?eh,stop_logging,[]}
     ];
 
+test_events(update_result_cth) ->
+    Suite = ct_cth_update_result_post_end_tc_SUITE,
+    [
+     {?eh,start_logging,'_'},
+     {?eh,test_start,{'DEF',{'START_TIME','LOGDIR'}}},
+     {?eh,cth,{'_',init,['_',[]]}},
+     {?eh,tc_start,{Suite,init_per_suite}},
+     {?eh,tc_done,{Suite,init_per_suite,ok}},
+
+     {?eh,tc_start,{Suite,tc_ok_to_fail}},
+     {?eh,cth,{'_',post_end_per_testcase,[Suite,tc_ok_to_fail,'_',ok,[]]}},
+     {?eh,tc_done,{Suite,tc_ok_to_fail,{failed,{error,"Test failure"}}}},
+     {?eh,cth,{'_',on_tc_fail,'_'}},
+     {?eh,test_stats,{0,1,{0,0}}},
+
+     {?eh,tc_start,{Suite,tc_ok_to_skip}},
+     {?eh,cth,{'_',post_end_per_testcase,[Suite,tc_ok_to_skip,'_',ok,[]]}},
+     {?eh,tc_done,{Suite,tc_ok_to_skip,{skipped,"Test skipped"}}},
+     {?eh,cth,{'_',on_tc_skip,'_'}},
+     {?eh,test_stats,{0,1,{1,0}}},
+
+     {?eh,tc_start,{Suite,tc_fail_to_ok}},
+     {?eh,cth,{'_',post_end_per_testcase,
+               [Suite,tc_fail_to_ok,'_',
+                {error,{test_case_failed,"should be changed to ok"}},[]]}},
+     {?eh,tc_done,{Suite,tc_fail_to_ok,ok}},
+     {?eh,test_stats,{1,1,{1,0}}},
+
+     {?eh,tc_start,{Suite,tc_fail_to_skip}},
+     {?eh,cth,{'_',post_end_per_testcase,
+               [Suite,tc_fail_to_skip,'_',
+                {error,{test_case_failed,"should be changed to skip"}},[]]}},
+     {?eh,tc_done,{Suite,tc_fail_to_skip,{skipped,"Test skipped"}}},
+     {?eh,cth,{'_',on_tc_skip,'_'}},
+     {?eh,test_stats,{1,1,{2,0}}},
+
+     {?eh,tc_start,{Suite,tc_timetrap_to_ok}},
+     {?eh,cth,{'_',post_end_per_testcase,
+               [Suite,tc_timetrap_to_ok,'_',{timetrap_timeout,3000},[]]}},
+     {?eh,tc_done,{Suite,tc_timetrap_to_ok,ok}},
+     {?eh,test_stats,{2,1,{2,0}}},
+
+     {?eh,tc_start,{Suite,tc_timetrap_to_skip}},
+     {?eh,cth,{'_',post_end_per_testcase,
+               [Suite,tc_timetrap_to_skip,'_',{timetrap_timeout,3000},[]]}},
+     {?eh,tc_done,{Suite,tc_timetrap_to_skip,{skipped,"Test skipped"}}},
+     {?eh,cth,{'_',on_tc_skip,'_'}},
+     {?eh,test_stats,{2,1,{3,0}}},
+
+     {?eh,tc_start,{Suite,tc_skip_to_fail}},
+     {?eh,cth,{'_',post_end_per_testcase,
+               [Suite,tc_skip_to_fail,'_',
+                {skip,"should be changed to fail"},[]]}},
+     {?eh,tc_done,{Suite,tc_skip_to_fail,{failed,{error,"Test failure"}}}},
+     {?eh,cth,{'_',on_tc_fail,'_'}},
+     {?eh,test_stats,{2,2,{3,0}}},
+
+     {?eh,tc_start,{Suite,end_fail_to_fail}},
+     {?eh,cth,{'_',post_end_per_testcase,
+               [Suite,end_fail_to_fail,'_',
+                {failed,
+                 {Suite,end_per_testcase,
+                  {'EXIT',{test_case_failed,"change result when end fails"}}}},[]]}},
+     {?eh,tc_done,{Suite,end_fail_to_fail,{failed,{error,"Test failure"}}}},
+     {?eh,cth,{'_',on_tc_fail,'_'}},
+     {?eh,test_stats,{2,3,{3,0}}},
+
+     {?eh,tc_start,{Suite,end_fail_to_skip}},
+     {?eh,cth,{'_',post_end_per_testcase,
+               [Suite,end_fail_to_skip,'_',
+                {failed,
+                 {Suite,end_per_testcase,
+                  {'EXIT',{test_case_failed,"change result when end fails"}}}},[]]}},
+     {?eh,tc_done,{Suite,end_fail_to_skip,{skipped,"Test skipped"}}},
+     {?eh,cth,{'_',on_tc_skip,'_'}},
+     {?eh,test_stats,{2,3,{4,0}}},
+
+     {?eh,tc_start,{Suite,end_timetrap_to_fail}},
+     {?eh,cth,{'_',post_end_per_testcase,
+               [Suite,end_timetrap_to_fail,'_',
+                {failed,{Suite,end_per_testcase,{timetrap_timeout,3000}}},[]]}},
+     {?eh,tc_done,{Suite,end_timetrap_to_fail,{failed,{error,"Test failure"}}}},
+     {?eh,cth,{'_',on_tc_fail,'_'}},
+     {?eh,test_stats,{2,4,{4,0}}},
+
+     {?eh,tc_start,{Suite,end_timetrap_to_skip}},
+     {?eh,cth,{'_',post_end_per_testcase,
+               [Suite,end_timetrap_to_skip,'_',
+                {failed,{Suite,end_per_testcase,{timetrap_timeout,3000}}},[]]}},
+     {?eh,tc_done,{Suite,end_timetrap_to_skip,{skipped,"Test skipped"}}},
+     {?eh,cth,{'_',on_tc_skip,'_'}},
+     {?eh,test_stats,{2,4,{5,0}}},
+
+     {?eh,tc_start,{Suite,end_per_suite}},
+     {?eh,tc_done,{Suite,end_per_suite,ok}},
+     {?eh,test_done,{'DEF','STOP_TIME'}},
+     {?eh,cth,{'_',terminate,[[]]}},
+     {?eh,stop_logging,[]}
+    ];
+
 test_events(options_cth) ->
     [
      {?eh,start_logging,{'DEF','RUNDIR'}},
diff --git a/lib/common_test/test/ct_hooks_SUITE_data/cth/tests/ct_cth_update_result_post_end_tc_SUITE.erl b/lib/common_test/test/ct_hooks_SUITE_data/cth/tests/ct_cth_update_result_post_end_tc_SUITE.erl
new file mode 100644
index 0000000000..a16138ce6f
--- /dev/null
+++ b/lib/common_test/test/ct_hooks_SUITE_data/cth/tests/ct_cth_update_result_post_end_tc_SUITE.erl
@@ -0,0 +1,101 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2010-2017. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+-module(ct_cth_update_result_post_end_tc_SUITE).
+
+-compile(export_all).
+
+-include("ct.hrl").
+
+suite() ->
+    [{timetrap,{seconds,3}}].
+
+init_per_suite(Config) ->
+    Config.
+
+end_per_suite(Config) ->
+    ok.
+
+init_per_group(_,Config) ->
+    Config.
+
+end_per_group(_,_) ->
+    ok.
+
+init_per_testcase(_,Config) ->
+    Config.
+
+end_per_testcase(EndTimetrap,_) when EndTimetrap==end_timetrap_to_fail;
+                                     EndTimetrap==end_timetrap_to_skip->
+    timer:sleep(10000);
+end_per_testcase(EndFail,_) when EndFail==end_fail_to_fail;
+                                 EndFail==end_fail_to_skip->
+    ct:fail("change result when end fails");
+end_per_testcase(_,_) ->
+    ok.
+
+all() ->
+    [tc_ok_to_fail,
+     tc_ok_to_skip,
+     tc_fail_to_ok,
+     tc_fail_to_skip,
+     tc_timetrap_to_ok,
+     tc_timetrap_to_skip,
+     tc_skip_to_fail,
+     end_fail_to_fail,
+     end_fail_to_skip,
+     end_timetrap_to_fail,
+     end_timetrap_to_skip].
+
+%% Test cases starts here.
+tc_ok_to_fail(_Config) ->
+    ok.
+
+tc_ok_to_skip(_Config) ->
+    ok.
+
+tc_fail_to_ok(_Config) ->
+    ct:fail("should be changed to ok").
+
+tc_fail_to_skip(_Config) ->
+    ct:fail("should be changed to skip").
+
+tc_timetrap_to_ok(_Config) ->
+    timer:sleep(10000), % will time out after 3 sek
+    ok.
+
+tc_timetrap_to_skip(_Config) ->
+    timer:sleep(10000), % will time out after 3 sek
+    ok.
+
+tc_skip_to_fail(_Config) ->
+    {skip,"should be changed to fail"}.
+
+end_fail_to_fail(_Config) ->
+    ok.
+
+end_fail_to_skip(_Config) ->
+    ok.
+
+end_timetrap_to_fail(_Config) ->
+    ok.
+
+end_timetrap_to_skip(_Config) ->
+    ok.
diff --git a/lib/common_test/test/ct_hooks_SUITE_data/cth/tests/update_result_post_end_tc_cth.erl b/lib/common_test/test/ct_hooks_SUITE_data/cth/tests/update_result_post_end_tc_cth.erl
new file mode 100644
index 0000000000..7afb3d8781
--- /dev/null
+++ b/lib/common_test/test/ct_hooks_SUITE_data/cth/tests/update_result_post_end_tc_cth.erl
@@ -0,0 +1,98 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2010-2017. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+
+-module(update_result_post_end_tc_cth).
+
+
+-include_lib("common_test/src/ct_util.hrl").
+-include_lib("common_test/include/ct_event.hrl").
+
+
+%% CT Hooks
+-compile(export_all).
+
+init(Id, Opts) ->
+    empty_cth:init(Id, Opts).
+
+pre_init_per_suite(Suite, Config, State) ->
+    empty_cth:pre_init_per_suite(Suite,Config,State).
+
+post_init_per_suite(Suite,Config,Return,State) ->
+    empty_cth:post_init_per_suite(Suite,Config,Return,State).
+
+pre_end_per_suite(Suite,Config,State) ->
+    empty_cth:pre_end_per_suite(Suite,Config,State).
+
+post_end_per_suite(Suite,Config,Return,State) ->
+    empty_cth:post_end_per_suite(Suite,Config,Return,State).
+
+pre_init_per_group(Suite,Group,Config,State) ->
+    empty_cth:pre_init_per_group(Suite,Group,Config,State).
+
+post_init_per_group(Suite,Group,Config,Return,State) ->
+    empty_cth:post_init_per_group(Suite,Group,Config,Return,State).
+
+pre_end_per_group(Suite,Group,Config,State) ->
+    empty_cth:pre_end_per_group(Suite,Group,Config,State).
+
+post_end_per_group(Suite,Group,Config,Return,State) ->
+    empty_cth:post_end_per_group(Suite,Group,Config,Return,State).
+
+pre_init_per_testcase(Suite,TC,Config,State) ->
+    empty_cth:pre_init_per_testcase(Suite,TC,Config,State).
+
+post_end_per_testcase(Suite,TC,Config,Return,State) ->
+    empty_cth:post_end_per_testcase(Suite,TC,Config,Return,State),
+    change_result(TC,Config,State).
+
+on_tc_fail(Suite,TC, Reason, State) ->
+    empty_cth:on_tc_fail(Suite,TC,Reason,State).
+
+on_tc_skip(Suite,TC, Reason, State) ->
+    empty_cth:on_tc_skip(Suite,TC,Reason,State).
+
+terminate(State) ->
+    empty_cth:terminate(State).
+
+%%%-----------------------------------------------------------------
+%%% 
+change_result(tc_ok_to_fail,_Config,State) ->
+    {{fail, "Test failure"}, State};
+change_result(tc_ok_to_skip,_Config,State) ->
+    {{skip, "Test skipped"}, State};
+change_result(tc_fail_to_ok,Config,State) ->
+    {lists:keydelete(tc_status,1,Config),State};
+change_result(tc_fail_to_skip,Config,State) ->
+    {{skip,"Test skipped"},State};
+change_result(tc_timetrap_to_ok,Config,State) ->
+    {lists:keydelete(tc_status,1,Config),State};
+change_result(tc_timetrap_to_skip,Config,State) ->
+    {{skip,"Test skipped"},State};
+change_result(tc_skip_to_fail,_Config,State) ->
+    {{fail, "Test failure"}, State};
+change_result(end_fail_to_fail,_Config,State) ->
+    {{fail, "Test failure"}, State};
+change_result(end_fail_to_skip,_Config,State) ->
+    {{skip, "Test skipped"}, State};
+change_result(end_timetrap_to_fail,_Config,State) ->
+    {{fail, "Test failure"}, State};
+change_result(end_timetrap_to_skip,_Config,State) ->
+    {{skip, "Test skipped"}, State}.
diff --git a/lib/common_test/test/ct_netconfc_SUITE_data/netconfc1_SUITE.erl b/lib/common_test/test/ct_netconfc_SUITE_data/netconfc1_SUITE.erl
index a2fa099a8c..7aaf33839f 100644
--- a/lib/common_test/test/ct_netconfc_SUITE_data/netconfc1_SUITE.erl
+++ b/lib/common_test/test/ct_netconfc_SUITE_data/netconfc1_SUITE.erl
@@ -205,7 +205,7 @@ hello_required_exists(Config) ->
     SshDir = ?config(ssh_dir,Config),
     {ok,_Client1} = open_configured_success(my_named_connection,SshDir),
 
-    %% Check that same name can not be used twice
+    %% Check that same name cannot be used twice
     {error,{connection_exists,_Client1}} =
 	ct_netconfc:open(my_named_connection,[{user_dir,SshDir}]),
 
@@ -385,7 +385,7 @@ timeout_get(Config) ->
 %% received, the timeout message might already be sent when the timer
 %% is cancelled. This test checks that the timeout message is flushed
 %% from the message queue. If it isn't, the client crashes and the
-%% session can not be closed afterwards.
+%% session cannot be closed afterwards.
 %% Note that we can only hope that the test case triggers the problem
 %% every now and then, as it is very timing dependent...
 flush_timeout_get(Config) ->
@@ -440,6 +440,12 @@ edit_config(Config) ->
     ?ok = ct_netconfc:edit_config(Client,running,
 				  {server,[{xmlns,"myns"}],
 				   [{name,["myserver"]}]}),
+    ?NS:expect_reply('edit-config',ok),
+    ?ok = ct_netconfc:edit_config(Client,running,
+				  [{server,[{xmlns,"myns"}],
+                                    [{name,["server1"]}]},
+                                   {server,[{xmlns,"myns"}],
+                                    [{name,["server2"]}]}]),
     ?NS:expect_do_reply('close-session',close,ok),
     ?ok = ct_netconfc:close_session(Client),
     ok.
diff --git a/lib/common_test/test/ct_telnet_SUITE.erl b/lib/common_test/test/ct_telnet_SUITE.erl
index a0089c9bc9..f71b7c370f 100644
--- a/lib/common_test/test/ct_telnet_SUITE.erl
+++ b/lib/common_test/test/ct_telnet_SUITE.erl
@@ -50,10 +50,10 @@
 suite() -> [{ct_hooks,[ts_install_cth]}].
 
 groups() ->
-    [{legacy, [], [unix_telnet,own_server,timetrap]},
-     {raw,    [], [unix_telnet,own_server,timetrap]},
-     {html,   [], [unix_telnet,own_server]},
-     {silent, [], [unix_telnet,own_server]}].
+    [{legacy, [], [unix_telnet,own_server,faulty_regexp,timetrap]},
+     {raw,    [], [unix_telnet,own_server,faulty_regexp,timetrap]},
+     {html,   [], [unix_telnet,own_server,faulty_regexp]},
+     {silent, [], [unix_telnet,own_server,faulty_regexp]}].
 
 all() ->
     [
@@ -119,6 +119,12 @@ own_server(Config) ->
     all_tests_in_suite(own_server,"ct_telnet_own_server_SUITE",
 		       CfgFile,Config).
 
+faulty_regexp(Config) ->
+    CfgFile = "telnet.faulty_regexp." ++
+	atom_to_list(groupname(Config)) ++ ".cfg",
+    all_tests_in_suite(faulty_regexp,"ct_telnet_faulty_regexp_SUITE",
+		       CfgFile,Config).
+
 timetrap(Config) ->
     CfgFile = "telnet.timetrap." ++
 	atom_to_list(groupname(Config)) ++ ".cfg",
@@ -225,6 +231,31 @@ events_to_check(unix_telnet,Config) ->
     all_cases(ct_telnet_basic_SUITE,Config);
 events_to_check(own_server,Config) ->
     all_cases(ct_telnet_own_server_SUITE,Config);
+events_to_check(faulty_regexp,_Config) ->
+    [{?eh,start_logging,{'DEF','RUNDIR'}},
+     {?eh,tc_done,
+      {ct_telnet_faulty_regexp_SUITE,expect_pattern,
+       {failed,
+        {error,{{bad_pattern,"invalid(pattern",{"missing )",15}},
+                {ct_telnet,expect,3}}}}}},
+     {?eh,tc_done,
+      {ct_telnet_faulty_regexp_SUITE,expect_pattern_no_string,
+       {failed,
+        {error,{{bad_pattern,invalid_pattern},
+                {ct_telnet,expect,3}}}}}},
+     {?eh,tc_done,
+      {ct_telnet_faulty_regexp_SUITE,expect_tag_pattern,
+       {failed,
+        {error,{{bad_pattern,{tag,"invalid(pattern"},{"missing )",15}},
+                {ct_telnet,expect,3}}}}}},
+     {?eh,tc_done,
+      {ct_telnet_faulty_regexp_SUITE,expect_tag_pattern_no_string,
+       {failed,
+        {error,{{bad_pattern,{tag,invalid_pattern}},
+                {ct_telnet,expect,3}}}}}},
+     {?eh,tc_done,{ct_telnet_faulty_regexp_SUITE,expect_pattern_unicode,ok}},
+     {?eh,tc_done,{ct_telnet_faulty_regexp_SUITE,expect_tag_pattern_unicode,ok}},
+     {?eh,stop_logging,[]}];
 events_to_check(timetrap,_Config) ->
     [{?eh,start_logging,{'DEF','RUNDIR'}},
      {?eh,tc_done,{ct_telnet_timetrap_SUITE,expect_timetrap,
diff --git a/lib/common_test/test/ct_telnet_SUITE_data/ct_telnet_faulty_regexp_SUITE.erl b/lib/common_test/test/ct_telnet_SUITE_data/ct_telnet_faulty_regexp_SUITE.erl
new file mode 100644
index 0000000000..a5c9451a9c
--- /dev/null
+++ b/lib/common_test/test/ct_telnet_SUITE_data/ct_telnet_faulty_regexp_SUITE.erl
@@ -0,0 +1,79 @@
+-module(ct_telnet_faulty_regexp_SUITE).
+
+-compile(export_all).
+
+-include_lib("common_test/include/ct.hrl").
+
+-define(name, telnet_server_conn1).
+
+%%--------------------------------------------------------------------
+%% TEST SERVER CALLBACK FUNCTIONS
+%%--------------------------------------------------------------------
+
+init_per_suite(Config) ->
+    Config.
+
+end_per_suite(_Config) ->
+    ok.
+
+suite() -> [{require,?name,{unix,[telnet]}},
+	    {require,ct_conn_log},
+ 	    {ct_hooks, [{cth_conn_log,[]}]}].
+
+all() ->
+    [expect_pattern,
+     expect_pattern_no_string,
+     expect_tag_pattern,
+     expect_tag_pattern_no_string,
+     expect_pattern_unicode,
+     expect_tag_pattern_unicode].
+
+groups() ->
+    [].
+
+init_per_group(_GroupName, Config) ->
+    Config.
+
+end_per_group(_GroupName, Config) ->
+    Config.
+
+init_per_testcase(_,Config) ->
+    ct:log("init_per_testcase: opening telnet connection...",[]),
+    {ok,_} = ct_telnet:open(?name),
+    ct:log("...done",[]),
+    Config.
+
+end_per_testcase(_,_Config) ->
+    ct:log("end_per_testcase: closing telnet connection...",[]),
+    _ = ct_telnet:close(?name),
+    ct:log("...done",[]),
+    ok.
+
+expect_pattern(_) ->
+    ok = ct_telnet:send(?name, "echo ayt"),
+    ok = ct_telnet:expect(?name, "invalid(pattern").
+
+expect_pattern_no_string(_) ->
+    ok = ct_telnet:send(?name, "echo ayt"),
+    ok = ct_telnet:expect(?name, invalid_pattern).
+
+expect_tag_pattern(_) ->
+    ok = ct_telnet:send(?name, "echo ayt"),
+    ok = ct_telnet:expect(?name, {tag,"invalid(pattern"}).
+
+expect_tag_pattern_no_string(_) ->
+    ok = ct_telnet:send(?name, "echo ayt"),
+    ok = ct_telnet:expect(?name, {tag,invalid_pattern}).
+
+%% Test that a unicode pattern can be given without the testcase
+%% failing.  Do however notice that there is no real unicode support
+%% in ct_telnet yet, that is, the telnet binary mode is not supported.
+expect_pattern_unicode(_) ->
+    ok = ct_telnet:send(?name, "echo ayt"),
+    {error,{prompt,_}} = ct_telnet:expect(?name, "pattern_with_unicode_αβ"),
+    ok.
+
+expect_tag_pattern_unicode(_) ->
+    ok = ct_telnet:send(?name, "echo ayt"),
+    {error,{prompt,_}} = ct_telnet:expect(?name, "pattern_with_unicode_αβ"),
+    ok.
diff --git a/lib/common_test/test/ct_telnet_SUITE_data/ct_telnet_own_server_SUITE.erl b/lib/common_test/test/ct_telnet_SUITE_data/ct_telnet_own_server_SUITE.erl
index 985fa40ad2..34df57027e 100644
--- a/lib/common_test/test/ct_telnet_SUITE_data/ct_telnet_own_server_SUITE.erl
+++ b/lib/common_test/test/ct_telnet_SUITE_data/ct_telnet_own_server_SUITE.erl
@@ -58,7 +58,8 @@ all() ->
      server_speaks,
      server_disconnects,
      newline_ayt,
-     newline_break
+     newline_break,
+     newline_string
     ].
 
 groups() ->
@@ -393,3 +394,11 @@ newline_break(_) ->
     "> " = lists:flatten(R),
     ok = ct_telnet:close(Handle),
     ok.
+
+%% Test option {newline,String} to specify an own newline, e.g. "\r\n"
+newline_string(_) ->
+    {ok, Handle} = ct_telnet:open(telnet_server_conn1),
+    ok = ct_telnet:send(Handle, "echo hello-", [{newline,"own_nl\n"}]),
+    {ok,["hello-own_nl"]} = ct_telnet:expect(Handle, ["hello-own_nl"]),
+    ok = ct_telnet:close(Handle),
+    ok.
diff --git a/lib/common_test/test/test_server_SUITE.erl b/lib/common_test/test/test_server_SUITE.erl
index 05737cfac9..6e52f24025 100644
--- a/lib/common_test/test/test_server_SUITE.erl
+++ b/lib/common_test/test/test_server_SUITE.erl
@@ -260,7 +260,7 @@ translate_filename(Filename,EncodingOnTestNode) ->
     end.
 
 get_latest_run_dir(Dir) ->
-    %% For the time being, filelib:wildcard can not take a binary
+    %% For the time being, filelib:wildcard cannot take a binary
     %% argument, so we avoid using this here.
     case file:list_dir(Dir) of
 	{ok,Files} ->
@@ -315,7 +315,7 @@ generate_and_run_unicode_test(Config0,Encoding) ->
     DataDir = ?config(data_dir,Config0),
     Suite = create_unicode_test_suite(DataDir,Encoding),
 
-    %% We can not run this test on default node since it must be
+    %% We cannot run this test on default node since it must be
     %% started with correct file name mode (+fnu/+fnl).
     %% OBS: the node are stopped by end_per_testcase/2
     Config1 = lists:keydelete(node,1,Config0),
diff --git a/lib/common_test/test/test_server_test_lib.erl b/lib/common_test/test/test_server_test_lib.erl
index 9ee946af0b..58b3aaee9b 100644
--- a/lib/common_test/test/test_server_test_lib.erl
+++ b/lib/common_test/test/test_server_test_lib.erl
@@ -22,7 +22,7 @@
 -export([parse_suite/1]).
 -export([init/2, pre_init_per_testcase/3, post_end_per_testcase/4]).
 
-%% for test_server_SUITE when node can not be started as slave
+%% for test_server_SUITE when node cannot be started as slave
 -export([prepare_tester_node/2]).
 
 -include("test_server_test_lib.hrl").
diff --git a/lib/common_test/test_server/configure.in b/lib/common_test/test_server/configure.in
index 0511d126b4..a32d050081 100644
--- a/lib/common_test/test_server/configure.in
+++ b/lib/common_test/test_server/configure.in
@@ -171,7 +171,7 @@ case $system in
 	fi
 	SHLIB_EXTRACT_ALL=""
 	;;
-    *-openbsd*)
+    *-openbsd*|*-netbsd*|*-freebsd*|*-dragonfly*)
 	# Not available on all versions:  check for include file.
 	AC_CHECK_HEADER(dlfcn.h, [
 	    SHLIB_CFLAGS="-fpic"
@@ -194,29 +194,6 @@ case $system in
 	])
 	SHLIB_EXTRACT_ALL=""
 	;;
-    *-netbsd*|*-freebsd*|*-dragonfly*)
-	# Not available on all versions:  check for include file.
-	AC_CHECK_HEADER(dlfcn.h, [
-	    SHLIB_CFLAGS="-fpic"
-	    SHLIB_LD="ld"
-	    SHLIB_LDFLAGS="$LDFLAGS -Bshareable -x"
-	    SHLIB_SUFFIX=".so"
-	    if test X${enable_m64_build} = Xyes; then
-	        AC_MSG_ERROR(don't know how to link 64-bit dynamic drivers)
-	    fi
-	    if test X${enable_m32_build} = Xyes; then
-	        AC_MSG_ERROR(don't know how to link 32-bit dynamic drivers)
-	    fi
-	], [
-	    # No dynamic loading.
-	    SHLIB_CFLAGS=""
-	    SHLIB_LD="ld"
-	    SHLIB_LDFLAGS=""
-	    SHLIB_SUFFIX=""
-	    AC_MSG_ERROR(don't know how to compile and link dynamic drivers)
-	])
-	SHLIB_EXTRACT_ALL=""
-	;;
     *-solaris2*|*-sysv4*)
 	SHLIB_CFLAGS="-KPIC"
 	SHLIB_LD="/usr/ccs/bin/ld"
@@ -459,11 +436,11 @@ dnl Freely inspired by AC_TRY_LINK. (Maybe better to create a
 dnl AC_LANG_JAVA instead...)
 AC_DEFUN(ERL_TRY_LINK_JAVA,
 [java_link='$JAVAC conftest.java 1>&AC_FD_CC'
-changequote(�, �)dnl
+changequote(, )dnl
 cat > conftest.java <<EOF
-�$1�
+$1
 class conftest { public static void main(String[] args) {
-   �$2�
+   $2
    ; return; }}
 EOF
 changequote([, ])dnl
diff --git a/lib/common_test/test_server/ts_benchmark.erl b/lib/common_test/test_server/ts_benchmark.erl
index e4e06b54c2..a9486262b3 100644
--- a/lib/common_test/test_server/ts_benchmark.erl
+++ b/lib/common_test/test_server/ts_benchmark.erl
@@ -45,7 +45,7 @@ run(Specs, Opts, Vars) ->
      || Spec <- Specs],
     file:delete(filename:join(Cwd,"latest_benchmark")),
     {ok,D} = file:open(filename:join(Cwd,"latest_benchmark"),[write]),
-    io:format(D,BDir,[]),
+    io:format(D,"~ts", [BDir]),
     file:close(D).
     
 
diff --git a/lib/common_test/test_server/ts_erl_config.erl b/lib/common_test/test_server/ts_erl_config.erl
index 537628e39a..f3972bea4e 100644
--- a/lib/common_test/test_server/ts_erl_config.erl
+++ b/lib/common_test/test_server/ts_erl_config.erl
@@ -208,7 +208,11 @@ erl_interface(Vars,OsType) ->
 			 {filename:join(Dir, "lib"),
 			  filename:join([Dir, "src", "eidefs.mk"])};
 		     {srctree, _Root, Target} ->
-			 {filename:join([Dir, "obj", Target]),
+                         Obj = case is_debug_build() of
+                                   true -> "obj.debug";
+                                   false -> "obj"
+                               end,
+			 {filename:join([Dir, Obj, Target]),
 			  filename:join([Dir, "src", Target, "eidefs.mk"])}
 		 end}
 	end,
diff --git a/lib/common_test/test_server/ts_install.erl b/lib/common_test/test_server/ts_install.erl
index 048e5493d2..86f16fa072 100644
--- a/lib/common_test/test_server/ts_install.erl
+++ b/lib/common_test/test_server/ts_install.erl
@@ -112,12 +112,6 @@ get_vars([], name, [], Result) ->
 get_vars(_, _, _, _) ->
     {error, fatal_bad_conf_vars}.
 
-config_flags() ->
-    case os:getenv("CONFIG_FLAGS") of
-	false -> [];
-	CF -> string:lexemes(CF, " \t\n")
-    end.
-
 unix_autoconf(XConf) ->
     Configure = filename:absname("configure"),
     Flags = proplists:get_value(crossflags,XConf,[]),
@@ -128,7 +122,7 @@ unix_autoconf(XConf) ->
 		  erlang:system_info(threads) /= false],
     Debug = [" --enable-debug-mode" ||
 		string:find(erlang:system_info(system_version),"debug") =/= nomatch],
-    MXX_Build = [Y || Y <- config_flags(),
+    MXX_Build = [Y || Y <- string:lexemes(os:getenv("CONFIG_FLAGS", ""), " \t\n"),
 		      Y == "--enable-m64-build"
 			  orelse Y == "--enable-m32-build"],
     Args = Host ++ Build ++ Threads ++ Debug ++ " " ++ MXX_Build,
@@ -164,7 +158,7 @@ assign_vars(FlagsStr) ->
 
 assign_all_vars([$$ | Rest], FlagSoFar) ->
     {VarName,Rest1} = get_var_name(Rest, []),
-    assign_all_vars(Rest1, FlagSoFar ++ assign_var(VarName));
+    assign_all_vars(Rest1, FlagSoFar ++ os:getenv(VarName, ""));
 assign_all_vars([Char | Rest], FlagSoFar) ->
     assign_all_vars(Rest, FlagSoFar ++ [Char]);
 assign_all_vars([], Flag) ->
@@ -177,12 +171,6 @@ get_var_name([Ch | Rest] = Str, VarR) ->
     end;
 get_var_name([], VarR) ->
     {lists:reverse(VarR),[]}.
-	    
-assign_var(VarName) ->
-    case os:getenv(VarName) of
-	false -> "";
-	Val   -> Val
-    end.
 
 valid_char(Ch) when Ch >= $a, Ch =< $z -> true;
 valid_char(Ch) when Ch >= $A, Ch =< $Z -> true;
@@ -280,7 +268,7 @@ add_vars(Vars0, Opts0) ->
     {Opts, [{longnames, LongNames},
 	    {platform_id, PlatformId},
 	    {platform_filename, PlatformFilename},
-	    {rsh_name, get_rsh_name()},
+	    {rsh_name, os:getenv("ERL_RSH", "ssh")},
 	    {platform_label, PlatformLabel},
 	    {ts_net_dir, Mounted},
 	    {erl_flags, []},
@@ -301,16 +289,10 @@ get_testcase_callback() ->
 	    end
     end.
 
-get_rsh_name() ->
-    case os:getenv("ERL_RSH") of
-	false -> "rsh";
-	Str -> Str
-    end.
-
 platform_id(Vars) ->
     {Id,_,_,_} = platform(Vars),
     Id.
-    
+
 platform(Vars) ->
     Hostname = hostname(),
 
diff --git a/lib/common_test/vsn.mk b/lib/common_test/vsn.mk
index fd5d4a57aa..23eb8d9656 100644
--- a/lib/common_test/vsn.mk
+++ b/lib/common_test/vsn.mk
@@ -1 +1 @@
-COMMON_TEST_VSN = 1.16.1
+COMMON_TEST_VSN = 1.17
diff --git a/lib/compiler/doc/src/Makefile b/lib/compiler/doc/src/Makefile
index 32f150eef8..2fb163b9e7 100644
--- a/lib/compiler/doc/src/Makefile
+++ b/lib/compiler/doc/src/Makefile
@@ -31,6 +31,7 @@ APPLICATION=compiler
 # Release directory specification
 # ----------------------------------------------------
 RELSYSDIR = $(RELEASE_PATH)/lib/$(APPLICATION)-$(VSN)
+COMPILER_DIR = $(ERL_TOP)/lib/compiler/src
 
 # ----------------------------------------------------
 # Target Specs
@@ -38,7 +39,7 @@ RELSYSDIR = $(RELEASE_PATH)/lib/$(APPLICATION)-$(VSN)
 XML_APPLICATION_FILES = ref_man.xml
 XML_REF3_FILES = compile.xml
 
-XML_PART_FILES =
+XML_PART_FILES = internal.xml
 XML_CHAPTER_FILES = notes.xml
 
 BOOK_FILES = book.xml
@@ -49,6 +50,9 @@ XML_FILES = \
 	$(BOOK_FILES) $(XML_CHAPTER_FILES) \
 	$(XML_PART_FILES) $(XML_REF3_FILES) $(XML_APPLICATION_FILES)
 
+XML_INTERNAL_FILES = \
+	cerl.xml cerl_trees.xml cerl_clauses.xml
+
 # ----------------------------------------------------
 
 HTML_FILES = $(XML_APPLICATION_FILES:%.xml=$(HTMLDIR)/%.html) \
@@ -62,6 +66,8 @@ HTML_REF_MAN_FILE = $(HTMLDIR)/index.html
 
 TOP_PDF_FILE =  $(PDFDIR)/$(APPLICATION)-$(VSN).pdf
 
+XML_GEN_FILES = $(XML_INTERNAL_FILES:%=$(XMLDIR)/%)
+
 # ----------------------------------------------------
 # FLAGS
 # ----------------------------------------------------
@@ -85,6 +91,9 @@ man: $(MAN3_FILES)
 
 gifs: $(GIF_FILES:%=$(HTMLDIR)/%)
 
+$(XML_INTERNAL_FILES:%=$(XMLDIR)/%): $(COMPILER_DIR)/$(@:$(XMLDIR)/%.xml=%.erl)
+	$(gen_verbose)escript $(DOCGEN)/priv/bin/xml_from_edoc.escript -def vsn $(COMPILER_VSN) -dir $(XMLDIR) $(COMPILER_DIR)/$(@:$(XMLDIR)/%.xml=%.erl)
+
 debug opt:
 
 clean clean_docs:
diff --git a/lib/compiler/doc/src/book.xml b/lib/compiler/doc/src/book.xml
index af6b4cf47a..d101d40cb4 100644
--- a/lib/compiler/doc/src/book.xml
+++ b/lib/compiler/doc/src/book.xml
@@ -38,6 +38,9 @@
   <applications>
     <xi:include href="ref_man.xml"/>
   </applications>
+  <internals>
+    <xi:include href="internal.xml"/>
+  </internals>
   <releasenotes>
     <xi:include href="notes.xml"/>
   </releasenotes>
diff --git a/lib/compiler/doc/src/compile.xml b/lib/compiler/doc/src/compile.xml
index cfbd4c7fda..5219ba0f5d 100644
--- a/lib/compiler/doc/src/compile.xml
+++ b/lib/compiler/doc/src/compile.xml
@@ -29,7 +29,7 @@
     <rev>A</rev>
     <file>compile.sgml</file>
   </header>
-  <module>compile</module>
+  <module since="">compile</module>
   <modulesummary>Erlang Compiler</modulesummary>
   <description>
     <p>This module provides an interface to the standard Erlang
@@ -40,7 +40,7 @@
 
   <funcs>
     <func>
-      <name>env_compiler_options()</name>
+      <name since="OTP 19.0">env_compiler_options()</name>
       <fsummary>
 	Compiler options defined via the environment variable
 	<c>ERL_COMPILER_OPTIONS</c>
@@ -53,7 +53,7 @@
       </desc>
     </func>
     <func>
-      <name>file(File)</name>
+      <name since="">file(File)</name>
       <fsummary>Compiles a file.</fsummary>
       <desc>
         <p>Is the same as
@@ -63,7 +63,7 @@
     </func>
 
     <func>
-      <name>file(File, Options) -> CompRet</name>
+      <name since="">file(File, Options) -> CompRet</name>
       <fsummary>Compiles a file.</fsummary>
       <type>
         <v>CompRet = ModRet | BinRet | ErrRet</v>
@@ -416,6 +416,17 @@ module.beam: module.erl \
               is not documented, and can change between releases.</p>
           </item>
 
+          <tag><c>no_spawn_compiler_process</c></tag>
+          <item>
+            <p>By default, all code is compiled in a separate process
+              which is terminated at the end of compilation. However,
+              some tools, like Dialyzer or compilers for other BEAM languages,
+              may already manage their own worker processes and spawning
+              an extra process may slow the compilation down.
+              In such scenarios, you can pass this option to stop the
+              compiler from spawning an additional process.</p>
+          </item>
+
           <tag><c>no_strict_record_tests</c></tag>
           <item>
             <p>This option is not recommended.</p>
@@ -684,12 +695,13 @@ module.beam: module.erl \
 	</note>
 	
 	<note>
-	<p>The options <c>{nowarn_unused_function, FAs}</c>,
-          <c>{nowarn_bif_clash, FAs}</c>, and 
-          <c>{nowarn_deprecated_function, MFAs}</c> are only
-          recognized when given in files. They are not affected by
-	  options <c>warn_unused_function</c>, <c>warn_bif_clash</c>, or 
-          <c>warn_deprecated_function</c>.</p>
+	<p>Before OTP 22, the option <c>{nowarn_deprecated_function,
+	MFAs}</c> was only recognized when given in the file with
+	attribute <c>-compile()</c>. (The option
+	<c>{nowarn_unused_function,FAs}</c> was incorrectly documented
+	to only work in a file, but it also worked when given in the
+	option list.) Starting from OTP 22, all options that can be
+	given in the file can also be given in the option list.</p>
 	</note>
 
         <p>For debugging of the compiler, or for pure curiosity,
@@ -718,7 +730,7 @@ module.beam: module.erl \
     </func>
 
     <func>
-      <name>forms(Forms)</name>
+      <name since="">forms(Forms)</name>
       <fsummary>Compiles a list of forms.</fsummary>
       <desc>
         <p>Is the same as
@@ -728,7 +740,7 @@ module.beam: module.erl \
     </func>
 
     <func>
-      <name>forms(Forms, Options) -> CompRet</name>
+      <name since="">forms(Forms, Options) -> CompRet</name>
       <fsummary>Compiles a list of forms.</fsummary>
       <type>
         <v>Forms = [Form]</v>
@@ -749,7 +761,7 @@ module.beam: module.erl \
     </func>
 
     <func>
-      <name>format_error(ErrorDescriptor) -> chars()</name>
+      <name since="">format_error(ErrorDescriptor) -> chars()</name>
       <fsummary>Formats an error descriptor.</fsummary>
       <type>
         <v>ErrorDescriptor = errordesc()</v>
@@ -764,7 +776,7 @@ module.beam: module.erl \
     </func>
 
     <func>
-      <name>output_generated(Options) -> true | false</name>
+      <name since="">output_generated(Options) -> true | false</name>
       <fsummary>Determines whether the compiler generates an output file.</fsummary>
       <type>
         <v>Options = [term()]</v>
@@ -779,7 +791,7 @@ module.beam: module.erl \
     </func>
 
     <func>
-      <name>noenv_file(File, Options) -> CompRet</name>
+      <name since="">noenv_file(File, Options) -> CompRet</name>
       <fsummary>Compiles a file (ignoring <c>ERL_COMPILER_OPTIONS)</c>.</fsummary>
       <desc>
       <p>Works like <seealso marker="#file/2">file/2</seealso>,
@@ -789,7 +801,7 @@ module.beam: module.erl \
     </func>
 
     <func>
-      <name>noenv_forms(Forms, Options) -> CompRet</name>
+      <name since="">noenv_forms(Forms, Options) -> CompRet</name>
       <fsummary>Compiles a list of forms (ignoring <c>ERL_COMPILER_OPTIONS)</c>.</fsummary>
       <desc>
         <p>Works like <seealso marker="#forms/2">forms/2</seealso>,
@@ -799,7 +811,7 @@ module.beam: module.erl \
     </func>
 
     <func>
-      <name>noenv_output_generated(Options) -> true | false</name>
+      <name since="">noenv_output_generated(Options) -> true | false</name>
       <fsummary>Determines whether the compiler generates an output file 
       (ignoring <c>ERL_COMPILER_OPTIONS)</c>.</fsummary>
       <type>
diff --git a/lib/otp_mibs/doc/src/part.xml b/lib/compiler/doc/src/internal.xml
index 0a8ddce268..f24b363c1c 100644
--- a/lib/otp_mibs/doc/src/part.xml
+++ b/lib/compiler/doc/src/internal.xml
@@ -1,10 +1,10 @@
 <?xml version="1.0" encoding="utf-8" ?>
 <!DOCTYPE part SYSTEM "part.dtd">
 
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
+<internal xmlns:xi="http://www.w3.org/2001/XInclude">
   <header>
     <copyright>
-      <year>2003</year><year>2016</year>
+      <year>2018</year><year>2018</year>
       <holder>Ericsson AB. All Rights Reserved.</holder>
     </copyright>
     <legalnotice>
@@ -22,18 +22,17 @@
     
     </legalnotice>
 
-    <title>OTP_Mibs User's Guide</title>
-    <prepared>Ingela Anderton</prepared>
+    <title>Compiler Internal Documentation</title>
+    <prepared>Lukas Larsson</prepared>
     <docno></docno>
-    <date>2002-09-17</date>
-    <rev>A</rev>
+    <date>2018-07-07</date>
+    <rev>1.0.0</rev>
+    <file>internal.xml</file>
   </header>
   <description>
-    <p>The <em>OTP_Mibs</em> application provides an SNMP management
-      information base for Erlang nodes.</p>
   </description>
-  <xi:include href="introduction.xml"/>
-  <xi:include href="mibs.xml"/>
-</part>
-
+  <xi:include href="cerl.xml"/>
+  <xi:include href="cerl_trees.xml"/>
+  <xi:include href="cerl_clauses.xml"/>
+</internal>
 
diff --git a/lib/compiler/doc/src/notes.xml b/lib/compiler/doc/src/notes.xml
index 7addadf82c..d45dfef8f3 100644
--- a/lib/compiler/doc/src/notes.xml
+++ b/lib/compiler/doc/src/notes.xml
@@ -32,6 +32,58 @@
   <p>This document describes the changes made to the Compiler
     application.</p>
 
+<section><title>Compiler 7.3.2</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p>An expression such as <c>(A / B) band 16#ff</c> would
+	    crash the compiler.</p>
+          <p>
+	    Own Id: OTP-15518 Aux Id: ERL-829 </p>
+        </item>
+        <item>
+	    <p>There could be an incorrect warning when the
+	    <c>tuple_calls</c> option was given. The generated code
+	    would be correct. Here is an example of code that would
+	    trigger the warning:</p>
+	    <p><c>(list_to_atom("prefix_" ++
+	    atom_to_list(suffix))):doit(X)</c>.</p>
+          <p>
+	    Own Id: OTP-15552 Aux Id: ERL-838 </p>
+        </item>
+        <item>
+	    <p>Optimize (again) Dialyzer's handling of
+	    left-associative use of <c>andalso</c> and <c>orelse</c>
+	    in guards.</p>
+          <p>
+	    Own Id: OTP-15577 Aux Id: ERL-851, PR-2141, PR-1944 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>Compiler 7.3.1</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p>An optimization that avoided allocation of a stack
+	    frame for some <c>case</c> expressions was introduced in
+	    OTP 21. (ERL-504/OTP-14808) It turns out that in rare
+	    circumstances, this optimization is not safe. Therefore,
+	    this optimization has been disabled.</p>
+	    <p>A similar optimization will be included in OTP 22 in a
+	    safe way.</p>
+          <p>
+	    Own Id: OTP-15501 Aux Id: ERL-807, ERL-514, OTP-14808 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Compiler 7.3</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
diff --git a/lib/compiler/scripts/.gitignore b/lib/compiler/scripts/.gitignore
new file mode 100644
index 0000000000..4e4eba766d
--- /dev/null
+++ b/lib/compiler/scripts/.gitignore
@@ -0,0 +1 @@
+/smoke-build
diff --git a/lib/compiler/scripts/smoke b/lib/compiler/scripts/smoke
new file mode 100755
index 0000000000..ae31c923b8
--- /dev/null
+++ b/lib/compiler/scripts/smoke
@@ -0,0 +1,123 @@
+#!/usr/bin/env escript
+%% -*- erlang -*-
+-mode(compile).
+
+main(_Args) ->
+    setup(),
+    clone_elixir(),
+    build_elixir(),
+    test_elixir(),
+    setup_mix(),
+    smoke(main),
+    smoke(rabbitmq),
+    halt(0).
+
+setup() ->
+    ScriptsDir = scripts_dir(),
+    SmokeBuildDir = filename:join(ScriptsDir, "smoke-build"),
+    _ = file:make_dir(SmokeBuildDir),
+    ok = file:set_cwd(SmokeBuildDir),
+    ok.
+
+clone_elixir() ->
+    {ok,SmokeDir} = file:get_cwd(),
+    DotGitDir = filename:join([SmokeDir,"elixir",".git"]),
+    ElixirRepo = "[email protected]:elixir-lang/elixir.git",
+    case filelib:is_dir(DotGitDir) of
+        false ->
+            cmd("git clone " ++ ElixirRepo);
+        true ->
+            GetHeadSHA1 = "cd elixir && git rev-parse --verify HEAD",
+            Before = os:cmd(GetHeadSHA1),
+            cmd("cd elixir && git pull --ff-only origin master"),
+            case os:cmd(GetHeadSHA1) of
+                Before ->
+                    ok;
+                _After ->
+                    %% There were some changes. Clean to force a re-build.
+                    cmd("cd elixir && make clean")
+            end
+    end.
+
+build_elixir() ->
+    cmd("cd elixir && make compile").
+
+test_elixir() ->
+    cmd("cd elixir && make test_stdlib").
+
+setup_mix() ->
+    MixExsFile = filename:join(scripts_dir(), "smoke-mix.exs"),
+    {ok,MixExs} = file:read_file(MixExsFile),
+    ok = file:write_file("mix.exs", MixExs),
+
+    {ok,SmokeDir} = file:get_cwd(),
+    ElixirBin = filename:join([SmokeDir,"elixir","bin"]),
+    PATH = ElixirBin ++ ":" ++ os:getenv("PATH"),
+    os:putenv("PATH", PATH),
+    mix("local.hex --force"),
+    mix("local.rebar --force"),
+    ok.
+
+smoke(Set) ->
+    os:putenv("SMOKE_DEPS_SET", atom_to_list(Set)),
+    _ = file:delete("mix.lock"),
+    cmd("touch mix.exs"),
+    mix("deps.clean --all"),
+    mix("deps.get"),
+    mix("deps.compile"),
+    ok.
+
+scripts_dir() ->
+    Root = code:lib_dir(compiler),
+    filename:join(Root, "scripts").
+
+mix(Cmd) ->
+    cmd("mix " ++ Cmd).
+
+cmd(Cmd) ->
+    run("sh", ["-c",Cmd]).
+
+run(Program0, Args) ->
+    Program = case os:find_executable(Program0) of
+		  Path when is_list(Path) ->
+		      Path;
+		  false ->
+		      abort("Unable to find program: ~s\n", [Program0])
+	      end,
+    Cmd = case {Program0,Args} of
+              {"sh",["-c"|ShCmd]} ->
+                  ShCmd;
+              {_,_} ->
+                  lists:join(" ", [Program0|Args])
+          end,
+    io:format("\n# ~s\n", [Cmd]),
+    Options = [{args,Args},binary,exit_status,stderr_to_stdout],
+    try open_port({spawn_executable,Program}, Options) of
+	Port ->
+	    case run_loop(Port, <<>>) of
+                0 ->
+                    ok;
+                ExitCode ->
+                    abort("*** Failed with exit code: ~p\n",
+                          [ExitCode])
+            end
+    catch
+	error:_ ->
+	    abort("Failed to execute ~s\n", [Program0])
+    end.
+
+run_loop(Port, Output) ->
+    receive
+	{Port,{exit_status,Status}} ->
+	    Status;
+	{Port,{data,Bin}} ->
+            io:put_chars(Bin),
+	    run_loop(Port, <<Output/binary,Bin/binary>>);
+	Msg ->
+	    io:format("L: ~p~n", [Msg]),
+	    run_loop(Port, Output)
+    end.
+
+abort(Format, Args) ->
+    io:format(Format, Args),
+    halt(1).
diff --git a/lib/compiler/scripts/smoke-mix.exs b/lib/compiler/scripts/smoke-mix.exs
new file mode 100644
index 0000000000..ba0815e465
--- /dev/null
+++ b/lib/compiler/scripts/smoke-mix.exs
@@ -0,0 +1,103 @@
+defmodule Smoke.MixProject do
+  use Mix.Project
+
+  def project do
+    [
+      app: :smoke,
+      version: "0.1.0",
+      elixir: "~> 1.8",
+      start_permanent: Mix.env() == :prod,
+      deps: deps()
+    ]
+  end
+
+  # Run "mix help compile.app" to learn about applications.
+  def application do
+    [
+      extra_applications: [:logger]
+    ]
+  end
+
+  # Run "mix help deps" to learn about dependencies.
+  defp deps do
+    case :os.getenv('SMOKE_DEPS_SET') do
+      'main' ->
+	[
+	  {:bear, "~> 0.8.7"},
+	  {:cloudi_core, "~> 1.7"},
+	  {:cloudi_service_monitoring, "~> 1.7"},
+	  {:cloudi_service_tcp, "~> 1.7"},
+	  {:cloudi_service_queue, "~> 1.7"},
+	  {:cloudi_service_udp, "~> 1.7"},
+	  {:cloudi_service_map_reduce, "~> 1.7"},
+	  {:cloudi_service_api_requests, "~> 1.7"},
+	  {:cloudi_service_router, "~> 1.7"},
+	  {:cloudi_service_request_rate, "~> 1.7"},
+	  {:concuerror, "~> 0.20.0"},
+	  {:cowboy, "~> 2.6.1"},
+	  {:ecto, "~> 3.0.6"},
+	  {:ex_doc, "~> 0.19.3"},
+	  {:distillery, "~> 2.0.12"},
+	  {:erlydtl, "~> 0.12.1"},
+	  {:gen_smtp, "~> 0.13.0"},
+	  {:getopt, "~> 1.0.1"},
+	  {:gettext, "~> 0.16.1"},
+	  {:gpb, "~> 4.6"},
+	  {:gproc, "~> 0.8.0"},
+	  {:graphql, "~> 0.15.0", hex: :graphql_erl},
+	  {:hackney, "~> 1.15.0"},
+	  {:ibrowse, "~> 4.4.1"},
+	  {:jose, "~> 1.9.0"},
+	  {:lager, "~> 3.6"},
+	  {:locus, "~> 1.6"},
+	  {:nimble_parsec, "~> 0.5.0"},
+	  {:phoenix, "~> 1.4.0"},
+	  {:riak_pb, "~> 2.3"},
+	  {:scalaris, git: "https://github.com/scalaris-team/scalaris",
+	   compile: build_scalaris()},
+	  {:tdiff, "~> 0.1.2"},
+	  {:webmachine, "~> 1.11"},
+	  {:wings, git: "https://github.com/dgud/wings.git",
+	   compile: build_wings()},
+	  {:zotonic_stdlib, "~> 1.0"},
+	]
+      'rabbitmq' ->
+	[{:rabbit_common, "~> 3.7"}]
+      _ ->
+	[]
+    end
+  end
+
+  defp build_scalaris do
+    # Only compile the Erlang code.
+
+    """
+    echo '-include("rt_simple.hrl").' >include/rt.hrl
+    (cd src && erlc -W0 -I ../include -I ../contrib/log4erl/include -I ../contrib/yaws/include *.erl)
+    (cd src/comm_layer && erlc -W0 -I ../../include -I *.erl)
+    (cd src/cp && erlc -W0 -I ../../include -I *.erl)
+    (cd src/crdt && erlc -W0 -I ../../include -I *.erl)
+    (cd src/json && erlc -W0 -I ../../include -I *.erl)
+    (cd src/paxos && erlc -W0 -I ../../include -I *.erl)
+    (cd src/rbr && erlc -W0 -I ../../include -I *.erl)
+    (cd src/rrepair && erlc -W0 -I ../../include -I *.erl)
+    (cd src/time && erlc -W0 -I ../../include -I *.erl)
+    (cd src/transactions && erlc -W0 -I ../../include -I *.erl)
+    (cd src/tx && erlc -W0 -I ../../include -I *.erl)
+    """
+  end
+
+  defp build_wings do
+    # If the Erlang system is not installed, the build will
+    # crash in plugins_src/accel when attempting to build
+    # the accel driver. Since there is very little Erlang code in
+    # the directory, skip the entire directory.
+
+    """
+    echo "all:\n\t" >plugins_src/accel/Makefile
+    git commit -a -m'Disable for smoke testing'
+    git tag -a -m'Smoke test' vsmoke_test
+    make
+    """
+  end
+end
diff --git a/lib/compiler/src/Makefile b/lib/compiler/src/Makefile
index 2408c76b48..9f8d63baa1 100644
--- a/lib/compiler/src/Makefile
+++ b/lib/compiler/src/Makefile
@@ -49,10 +49,7 @@ MODULES =  \
 	beam_a \
 	beam_asm \
 	beam_block \
-	beam_bs \
-	beam_bsm \
 	beam_clean \
-	beam_dead \
 	beam_dict \
 	beam_disasm \
 	beam_except \
@@ -61,12 +58,20 @@ MODULES =  \
 	beam_listing \
 	beam_opcodes \
 	beam_peep \
-	beam_receive \
-	beam_reorder \
-	beam_record \
-	beam_split \
+	beam_ssa \
+	beam_ssa_bsm \
+	beam_ssa_codegen \
+	beam_ssa_dead \
+	beam_ssa_funs \
+	beam_ssa_lint \
+	beam_ssa_opt \
+	beam_ssa_pp \
+	beam_ssa_pre_codegen \
+	beam_ssa_recv \
+	beam_ssa_share \
+	beam_ssa_type \
+	beam_kernel_to_ssa \
 	beam_trim \
-	beam_type \
 	beam_utils \
 	beam_validator \
         beam_z \
@@ -85,12 +90,10 @@ MODULES =  \
 	rec_env \
 	sys_core_alias \
 	sys_core_bsm \
-	sys_core_dsetel \
 	sys_core_fold \
 	sys_core_fold_lists \
 	sys_core_inline \
 	sys_pre_attributes \
-	v3_codegen \
 	v3_core \
 	v3_kernel \
 	v3_kernel_pp
@@ -99,6 +102,8 @@ BEAM_H = $(wildcard ../priv/beam_h/*.h)
 
 HRL_FILES= \
 	beam_disasm.hrl \
+	beam_ssa_opt.hrl \
+	beam_ssa.hrl \
 	core_parse.hrl \
 	v3_kernel.hrl
 
@@ -124,9 +129,10 @@ APPUP_TARGET= $(EBIN)/$(APPUP_FILE)
 
 ifeq ($(NATIVE_LIBS_ENABLED),yes)
 ERL_COMPILE_FLAGS += +native
+else
+ERL_COMPILE_FLAGS += -Werror
 endif
 ERL_COMPILE_FLAGS += +inline +warn_unused_import \
- -Werror \
  -I../../stdlib/include -I$(EGEN) -W +warn_missing_spec
 
 # ----------------------------------------------------
@@ -185,7 +191,17 @@ release_docs_spec:
 # ---------------------------------------------------- 
 
 $(EBIN)/beam_disasm.beam: $(EGEN)/beam_opcodes.hrl beam_disasm.hrl
-$(EBIN)/beam_listing.beam: core_parse.hrl v3_kernel.hrl
+$(EBIN)/beam_listing.beam: core_parse.hrl v3_kernel.hrl beam_ssa.hrl
+$(EBIN)/beam_kernel_to_ssa.beam: v3_kernel.hrl beam_ssa.hrl
+$(EBIN)/beam_ssa.beam: beam_ssa.hrl
+$(EBIN)/beam_ssa_codegen.beam: beam_ssa.hrl
+$(EBIN)/beam_ssa_dead.beam: beam_ssa.hrl
+$(EBIN)/beam_ssa_lint.beam: beam_ssa.hrl
+$(EBIN)/beam_ssa_opt.beam: beam_ssa.hrl
+$(EBIN)/beam_ssa_pp.beam: beam_ssa.hrl
+$(EBIN)/beam_ssa_pre_codegen.beam: beam_ssa.hrl
+$(EBIN)/beam_ssa_recv.beam: beam_ssa.hrl
+$(EBIN)/beam_ssa_type.beam: beam_ssa.hrl
 $(EBIN)/cerl.beam: core_parse.hrl
 $(EBIN)/compile.beam: core_parse.hrl ../../stdlib/include/erl_compile.hrl
 $(EBIN)/core_lib.beam: core_parse.hrl
@@ -193,11 +209,9 @@ $(EBIN)/core_lint.beam: core_parse.hrl
 $(EBIN)/core_parse.beam: core_parse.hrl $(EGEN)/core_parse.erl
 $(EBIN)/core_pp.beam: core_parse.hrl
 $(EBIN)/sys_core_alias.beam: core_parse.hrl
-$(EBIN)/sys_core_dsetel.beam: core_parse.hrl
 $(EBIN)/sys_core_fold.beam: core_parse.hrl
 $(EBIN)/sys_core_fold_lists.beam: core_parse.hrl
 $(EBIN)/sys_core_inline.beam: core_parse.hrl
-$(EBIN)/v3_codegen.beam: v3_kernel.hrl
 $(EBIN)/v3_core.beam: core_parse.hrl
 $(EBIN)/v3_kernel.beam: core_parse.hrl v3_kernel.hrl
 $(EBIN)/v3_kernel_pp.beam: v3_kernel.hrl
diff --git a/lib/compiler/src/beam_a.erl b/lib/compiler/src/beam_a.erl
index 6fd4ace540..0bccad1ecd 100644
--- a/lib/compiler/src/beam_a.erl
+++ b/lib/compiler/src/beam_a.erl
@@ -39,14 +39,29 @@ function({function,Name,Arity,CLabel,Is0}) ->
 
 	%% Remove unusued labels for cleanliness and to help
 	%% optimization passes and HiPE.
-	Is = beam_jump:remove_unused_labels(Is1),
-	{function,Name,Arity,CLabel,Is}
+	Is2 = beam_jump:remove_unused_labels(Is1),
+
+        %% Some optimization passes can't handle consecutive labels.
+        %% Coalesce multiple consecutive labels.
+        Is = coalesce_consecutive_labels(Is2, [], []),
+
+        {function,Name,Arity,CLabel,Is}
     catch
         Class:Error:Stack ->
 	    io:fwrite("Function: ~w/~w\n", [Name,Arity]),
 	    erlang:raise(Class, Error, Stack)
     end.
 
+rename_instrs([{test,is_eq_exact,_,[Dst,Src]}=Test,
+               {move,Src,Dst}|Is]) ->
+    %% The move instruction is not needed.
+    rename_instrs([Test|Is]);
+rename_instrs([{test,is_eq_exact,_,[Same,Same]}|Is]) ->
+    %% Same literal or same register. Will always succeed.
+    rename_instrs(Is);
+rename_instrs([{loop_rec,{f,Fail},{x,0}},{loop_rec_end,_},{label,Fail}|Is]) ->
+    %% This instruction sequence does nothing.
+    rename_instrs(Is);
 rename_instrs([{apply_last,A,N}|Is]) ->
     [{apply,A},{deallocate,N},return|rename_instrs(Is)];
 rename_instrs([{call_last,A,F,N}|Is]) ->
@@ -85,8 +100,12 @@ rename_instr({bs_put_utf16=I,F,Fl,Src}) ->
     {bs_put,F,{I,Fl},[Src]};
 rename_instr({bs_put_utf32=I,F,Fl,Src}) ->
     {bs_put,F,{I,Fl},[Src]};
-rename_instr({bs_put_string,_,_}=I) ->
-    {bs_put,{f,0},I,[]};
+rename_instr({bs_put_string,_,{string,String}}) ->
+    %% Only happens when compiling from .S files. In old
+    %% .S files, String is a list. In .S in OTP 22 and later,
+    %% String is a binary.
+    {bs_put,{f,0},{bs_put_binary,8,{field_flags,[unsigned,big]}},
+     [{atom,all},{literal,iolist_to_binary([String])}]};
 rename_instr({bs_add=I,F,[Src1,Src2,U],Dst}) when is_integer(U) ->
     {bif,I,F,[Src1,Src2,{integer,U}],Dst};
 rename_instr({bs_utf8_size=I,F,Src,Dst}) ->
@@ -103,16 +122,14 @@ rename_instr({bs_private_append=I,F,Sz,U,Src,Flags,Dst}) ->
     {bs_init,F,{I,U,Flags},none,[Sz,Src],Dst};
 rename_instr(bs_init_writable=I) ->
     {bs_init,{f,0},I,1,[{x,0}],{x,0}};
-rename_instr({test,Op,F,[Ctx,Bits,{string,Str}]}) ->
-    %% When compiling from a .S file.
-    <<Bs:Bits/bits,_/bits>> = list_to_binary(Str),
-    {test,Op,F,[Ctx,Bs]};
 rename_instr({put_map_assoc,Fail,S,D,R,L}) ->
     {put_map,Fail,assoc,S,D,R,L};
 rename_instr({put_map_exact,Fail,S,D,R,L}) ->
     {put_map,Fail,exact,S,D,R,L};
 rename_instr({test,has_map_fields,Fail,Src,{list,List}}) ->
     {test,has_map_fields,Fail,[Src|List]};
+rename_instr({test,is_nil,Fail,[Src]}) ->
+    {test,is_eq_exact,Fail,[Src,nil]};
 rename_instr({select_val=I,Reg,Fail,{list,List}}) ->
     {select,I,Reg,Fail,List};
 rename_instr({select_tuple_arity=I,Reg,Fail,{list,List}}) ->
@@ -120,3 +137,11 @@ rename_instr({select_tuple_arity=I,Reg,Fail,{list,List}}) ->
 rename_instr(send) ->
     {call_ext,2,send};
 rename_instr(I) -> I.
+
+coalesce_consecutive_labels([{label,L}=Lbl,{label,Alias}|Is], Replace, Acc) ->
+    coalesce_consecutive_labels([Lbl|Is], [{Alias,L}|Replace], Acc);
+coalesce_consecutive_labels([I|Is], Replace, Acc) ->
+    coalesce_consecutive_labels(Is, Replace, [I|Acc]);
+coalesce_consecutive_labels([], Replace, Acc) ->
+    D = maps:from_list(Replace),
+    beam_utils:replace_labels(Acc, [], D, fun(L) -> L end).
diff --git a/lib/compiler/src/beam_asm.erl b/lib/compiler/src/beam_asm.erl
index df0321e85a..bc1290f6fd 100644
--- a/lib/compiler/src/beam_asm.erl
+++ b/lib/compiler/src/beam_asm.erl
@@ -424,8 +424,8 @@ encode_arg({f, W}, Dict) ->
     {encode(?tag_f, W), Dict};
 %% encode_arg({'char', C}, Dict) ->
 %%     {encode(?tag_h, C), Dict};
-encode_arg({string, String}, Dict0) ->
-    {Offset, Dict} = beam_dict:string(String, Dict0),
+encode_arg({string, BinString}, Dict0) when is_binary(BinString) ->
+    {Offset, Dict} = beam_dict:string(BinString, Dict0),
     {encode(?tag_u, Offset), Dict};
 encode_arg({extfunc, M, F, A}, Dict0) ->
     {Index, Dict} = beam_dict:import(M, F, A, Dict0),
diff --git a/lib/compiler/src/beam_block.erl b/lib/compiler/src/beam_block.erl
index fe43163455..707974b2c1 100644
--- a/lib/compiler/src/beam_block.erl
+++ b/lib/compiler/src/beam_block.erl
@@ -17,39 +17,24 @@
 %%
 %% %CopyrightEnd%
 %%
-%% Purpose : Partitions assembly instructions into basic blocks and
-%% optimizes them.
+%% Purpose: Partition BEAM instructions into basic blocks.
 
 -module(beam_block).
 
 -export([module/2]).
--import(lists, [reverse/1,reverse/2,member/2]).
+-import(lists, [keysort/2,reverse/1,splitwith/2]).
 
 -spec module(beam_utils:module_code(), [compile:option()]) ->
                     {'ok',beam_utils:module_code()}.
 
-module({Mod,Exp,Attr,Fs0,Lc}, Opts) ->
-    Blockify = not member(no_blockify, Opts),
-    Fs = [function(F, Blockify) || F <- Fs0],
+module({Mod,Exp,Attr,Fs0,Lc}, _Opts) ->
+    Fs = [function(F) || F <- Fs0],
     {ok,{Mod,Exp,Attr,Fs,Lc}}.
 
-function({function,Name,Arity,CLabel,Is0}, Blockify) ->
+function({function,Name,Arity,CLabel,Is0}) ->
     try
-	%% Collect basic blocks and optimize them.
-        Is1 = case Blockify of
-                  false -> Is0;
-                  true -> blockify(Is0)
-              end,
-        Is2 = embed_lines(Is1),
-        Is3 = local_cse(Is2),
-        Is4 = beam_utils:anno_defs(Is3),
-        Is5 = move_allocates(Is4),
-        Is6 = beam_utils:live_opt(Is5),
-        Is7 = opt_blocks(Is6),
-        Is8 = beam_utils:delete_annos(Is7),
-        Is = opt_allocs(Is8),
-
-        %% Done.
+        Is1 = blockify(Is0),
+        Is = embed_lines(Is1),
         {function,Name,Arity,CLabel,Is}
     catch
         Class:Error:Stack ->
@@ -64,14 +49,12 @@ function({function,Name,Arity,CLabel,Is0}, Blockify) ->
 blockify(Is) ->
     blockify(Is, []).
 
-blockify([{loop_rec,{f,Fail},{x,0}},{loop_rec_end,_Lbl},{label,Fail}|Is], Acc) ->
-    %% Useless instruction sequence.
-    blockify(Is, Acc);
 blockify([I|Is0]=IsAll, Acc) ->
     case collect(I) of
 	error -> blockify(Is0, [I|Acc]);
 	Instr when is_tuple(Instr) ->
-	    {Block,Is} = collect_block(IsAll),
+            {Block0,Is} = collect_block(IsAll),
+            Block = sort_moves(Block0),
 	    blockify(Is, [{block,Block}|Acc])
     end;
 blockify([], Acc) -> reverse(Acc).
@@ -80,12 +63,10 @@ collect_block(Is) ->
     collect_block(Is, []).
 
 collect_block([{allocate,N,R}|Is0], Acc) ->
-    {Inits,Is} = lists:splitwith(fun ({init,{y,_}}) -> true;
-                                     (_) -> false
-                                 end, Is0),
+    {Inits,Is} = splitwith(fun ({init,{y,_}}) -> true;
+                               (_) -> false
+                           end, Is0),
     collect_block(Is, [{set,[],[],{alloc,R,{nozero,N,0,Inits}}}|Acc]);
-collect_block([{allocate_zero,Ns,R},{test_heap,Nh,R}|Is], Acc) ->
-    collect_block(Is, [{set,[],[],{alloc,R,{zero,Ns,Nh,[]}}}|Acc]);
 collect_block([I|Is]=Is0, Acc) ->
     case collect(I) of
 	error -> {reverse(Acc),Is0};
@@ -100,23 +81,20 @@ collect({allocate_heap,Ns,Nh,R}) -> {set,[],[],{alloc,R,{nozero,Ns,Nh,[]}}};
 collect({allocate_heap_zero,Ns,Nh,R}) -> {set,[],[],{alloc,R,{zero,Ns,Nh,[]}}};
 collect({init,D})            -> {set,[D],[],init};
 collect({test_heap,N,R})     -> {set,[],[],{alloc,R,{nozero,nostack,N,[]}}};
-collect({bif,N,F,As,D})      -> {set,[D],As,{bif,N,F}};
-collect({gc_bif,N,F,R,As,D}) -> {set,[D],As,{alloc,R,{gc_bif,N,F}}};
+collect({bif,N,{f,0},As,D})  -> {set,[D],As,{bif,N,{f,0}}};
+collect({gc_bif,N,{f,0},R,As,D}) ->   {set,[D],As,{alloc,R,{gc_bif,N,{f,0}}}};
 collect({move,S,D})          -> {set,[D],[S],move};
 collect({put_list,S1,S2,D})  -> {set,[D],[S1,S2],put_list};
 collect({put_tuple,A,D})     -> {set,[D],[],{put_tuple,A}};
 collect({put,S})             -> {set,[],[S],put};
+collect({put_tuple2,D,{list,Els}}) -> {set,[D],Els,put_tuple2};
 collect({get_tuple_element,S,I,D}) -> {set,[D],[S],{get_tuple_element,I}};
 collect({set_tuple_element,S,D,I}) -> {set,[],[S,D],{set_tuple_element,I}};
 collect({get_hd,S,D})  ->       {set,[D],[S],get_hd};
 collect({get_tl,S,D})  ->       {set,[D],[S],get_tl};
 collect(remove_message)      -> {set,[],[],remove_message};
-collect({put_map,F,Op,S,D,R,{list,Puts}}) ->
-    {set,[D],[S|Puts],{alloc,R,{put_map,Op,F}}};
-collect({'catch'=Op,R,L}) ->
-    {set,[R],[],{try_catch,Op,L}};
-collect({'try'=Op,R,L}) ->
-    {set,[R],[],{try_catch,Op,L}};
+collect({put_map,{f,0},Op,S,D,R,{list,Puts}}) ->
+    {set,[D],[S|Puts],{alloc,R,{put_map,Op,{f,0}}}};
 collect(fclearerror)         -> {set,[],[],fclearerror};
 collect({fcheckerror,{f,0}}) -> {set,[],[],fcheckerror};
 collect({fmove,S,D})         -> {set,[D],[S],fmove};
@@ -137,557 +115,39 @@ embed_lines([{block,B2},{line,_}=Line,{block,B1}|T], Acc) ->
 embed_lines([{block,B1},{line,_}=Line|T], Acc) ->
     B = {block,[{set,[],[],Line}|B1]},
     embed_lines([B|T], Acc);
-embed_lines([{block,B2},{block,B1}|T], Acc) ->
-    %% This can only happen when beam_block is run for
-    %% the second time.
-    B = {block,B1++B2},
-    embed_lines([B|T], Acc);
 embed_lines([I|Is], Acc) ->
     embed_lines(Is, [I|Acc]);
 embed_lines([], Acc) -> Acc.
 
-opt_blocks([{block,Bl0}|Is]) ->
-    %% The live annotation at the beginning is not useful.
-    [{'%anno',_}|Bl] = Bl0,
-    [{block,opt_block(Bl)}|opt_blocks(Is)];
-opt_blocks([I|Is]) ->
-    [I|opt_blocks(Is)];
-opt_blocks([]) -> [].
-
-opt_block(Is0) ->
-    find_fixpoint(fun(Is) ->
-                          opt_tuple_element(opt(Is))
-                  end, Is0).
-
-find_fixpoint(OptFun, Is0) ->
-    case OptFun(Is0) of
-	Is0 -> Is0;
-	Is1 -> find_fixpoint(OptFun, Is1)
-    end.
-
-%% move_allocates(Is0) -> Is
-%%  Move allocate instructions upwards in the instruction stream
-%%  (within the same block), in the hope of getting more possibilities
-%%  for optimizing away moves later.
-%%
-%%  For example, we can transform the following instructions:
-%%
-%%     get_tuple_element x(1) Element => x(2)
-%%     allocate_zero StackSize 3    %% x(0), x(1), x(2) are live
-%%
-%%  to the following instructions:
-%%
-%%     allocate_zero StackSize 2    %% x(0) and x(1) are live
-%%     get_tuple_element x(1) Element => x(2)
-%%
-%%  NOTE: Since the beam_reorder pass has been run, it is no longer
-%%  safe to assume that if x(N) is initialized, then all lower-numbered
-%%  x registers are also initialized.
-%%
-%%  For example, we must be careful when transforming the following
-%%  instructions:
-%%
-%%     get_tuple_element x(0) Element => x(1)
-%%     allocate_zero StackSize 3    %x(0), x(1), x(2) are live
-%%
-%%  to the following instructions:
-%%
-%%     allocate_zero StackSize 3
-%%     get_tuple_element x(0) Element => x(1)
-%%
-%%  The transformation is safe if and only if x(1) has been
-%%  initialized previously.  We will use the annotations added by
-%%  beam_utils:anno_defs/1 to determine whether x(a) has been
-%%  initialized.
-
-move_allocates([{block,Bl0}|Is]) ->
-    Bl = move_allocates_1(reverse(Bl0), []),
-    [{block,Bl}|move_allocates(Is)];
-move_allocates([I|Is]) ->
-    [I|move_allocates(Is)];
-move_allocates([]) -> [].
-
-move_allocates_1([{'%anno',_}|Is], Acc) ->
-    move_allocates_1(Is, Acc);
-move_allocates_1([I|Is], [{set,[],[],{alloc,Live0,Info0}}|Acc]=Acc0) ->
-    case alloc_may_pass(I) of
-        false ->
-            move_allocates_1(Is, [I|Acc0]);
-        true ->
-            case alloc_live_regs(I, Is, Live0) of
-                not_possible ->
-                    move_allocates_1(Is, [I|Acc0]);
-                Live when is_integer(Live) ->
-                    Info = safe_info(Info0),
-                    A = {set,[],[],{alloc,Live,Info}},
-                    move_allocates_1(Is, [A,I|Acc])
-            end
-    end;
-move_allocates_1([I|Is], Acc) ->
-    move_allocates_1(Is, [I|Acc]);
-move_allocates_1([], Acc) -> Acc.
-
-alloc_may_pass({set,_,[{fr,_}],fmove}) -> false;
-alloc_may_pass({set,_,_,{alloc,_,_}}) -> false;
-alloc_may_pass({set,_,_,{set_tuple_element,_}}) -> false;
-alloc_may_pass({set,_,_,put_list}) -> false;
-alloc_may_pass({set,_,_,put}) -> false;
-alloc_may_pass({set,_,_,_}) -> true.
-
-safe_info({nozero,Stack,Heap,_}) ->
-    %% nozero is not safe if the allocation instruction is moved
-    %% upwards past an instruction that may throw an exception
-    %% (such as element/2).
-    {zero,Stack,Heap,[]};
-safe_info(Info) -> Info.
-
-%% opt([Instruction]) -> [Instruction]
-%%  Optimize the instruction stream inside a basic block.
-
-opt([{set,[X],[X],move}|Is]) -> opt(Is);
-opt([{set,[Dst],_,move},{set,[Dst],[Src],move}=I|Is]) when Dst =/= Src ->
-    opt([I|Is]);
-opt([{set,[{x,0}],[S1],move}=I1,{set,[D2],[{x,0}],move}|Is]) ->
-    opt([I1,{set,[D2],[S1],move}|Is]);
-opt([{set,[{x,0}],[S1],move}=I1,{set,[D2],[S2],move}|Is0]) when S1 =/= D2 ->
-    %% Place move S x0 at the end of move sequences so that
-    %% loader can merge with the following instruction
-    {Ds,Is} = opt_moves([D2], Is0),
-    [{set,Ds,[S2],move}|opt([I1|Is])];
-opt([{set,_,_,{line,_}}=Line1,
-     {set,[D1],[{integer,Idx1},Reg],{bif,element,{f,0}}}=I1,
-     {set,_,_,{line,_}}=Line2,
-     {set,[D2],[{integer,Idx2},Reg],{bif,element,{f,0}}}=I2|Is])
-  when Idx1 < Idx2, D1 =/= D2, D1 =/= Reg, D2 =/= Reg ->
-    opt([Line2,I2,Line1,I1|Is]);
-opt([{set,[D1],[{integer,Idx1},Reg],{bif,element,{f,L}}}=I1,
-     {set,[D2],[{integer,Idx2},Reg],{bif,element,{f,L}}}=I2|Is])
-  when Idx1 < Idx2, D1 =/= D2, D1 =/= Reg, D2 =/= Reg ->
-    opt([I2,I1|Is]);
-opt([{set,Hd0,Cons,get_hd}=GetHd,
-     {set,Tl0,Cons,get_tl}=GetTl|Is0]) ->
-    case {opt_moves(Hd0, [GetTl|Is0]),opt_moves(Tl0, [GetHd|Is0])} of
-        {{Hd0,Is},{Tl0,_}} ->
-            [GetHd|opt(Is)];
-        {{Hd,Is},{Tl0,_}} ->
-            [{set,Hd,Cons,get_hd}|opt(Is)];
-        {{_,_},{Tl,Is}} ->
-            [{set,Tl,Cons,get_tl}|opt(Is)]
-    end;
-opt([{set,Ds0,Ss,Op}|Is0]) ->
-    {Ds,Is} = opt_moves(Ds0, Is0),
-    [{set,Ds,Ss,Op}|opt(Is)];
-opt([{'%anno',_}=I|Is]) ->
-    [I|opt(Is)];
-opt([]) -> [].
-
-%% opt_moves([Dest], [Instruction]) -> {[Dest],[Instruction]}
-%%  For each Dest, does the optimization described in opt_move/2.
-
-opt_moves([], Is0) -> {[],Is0};
-opt_moves([D0]=Ds, Is0) ->
-    case opt_move(D0, Is0) of
-	not_possible -> {Ds,Is0};
-	{D1,Is} -> {[D1],Is}
-    end.
-
-%% opt_move(Dest, [Instruction]) -> {UpdatedDest,[Instruction]} | not_possible
-%%  If there is a {move,Dest,FinalDest} instruction
-%%  in the instruction stream, remove the move instruction
-%%  and let FinalDest be the destination.
-
-opt_move(Dest, Is) ->
-    opt_move_1(Dest, Is, []).
-
-opt_move_1(R, [{set,[D],[R],move}|Is0], Acc) ->
-    %% Provided that the source register is killed by instructions
-    %% that follow, the optimization is safe.
-    case eliminate_use_of_from_reg(Is0, R, D) of
-	{yes,Is} -> opt_move_rev(D, Acc, Is);
-	no -> not_possible
-    end;
-opt_move_1(_R, [{set,_,_,{alloc,_,_}}|_], _) ->
-    %% The optimization is either not possible or not safe.
-    %%
-    %% If R is an X register killed by allocation, the optimization is
-    %% not safe. On the other hand, if the X register is killed, there
-    %% will not follow a 'move' instruction with this X register as
-    %% the source.
-    %%
-    %% If R is a Y register, the optimization is still not safe
-    %% because the new target register is an X register that cannot
-    %% safely pass the alloc instruction.
-    not_possible;
-opt_move_1(R, [{set,_,_,_}=I|Is], Acc) ->
-    %% If the source register is either killed or used by this
-    %% instruction, the optimimization is not possible.
-    case is_killed_or_used(R, I) of
-	true -> not_possible;
-	false -> opt_move_1(R, Is, [I|Acc])
-    end;
-opt_move_1(_, _, _) ->
-    not_possible.
-
-%% opt_tuple_element([Instruction]) -> [Instruction]
-%%  If possible, move get_tuple_element instructions forward
-%%  in the instruction stream to a move instruction, eliminating
-%%  the move instruction. Example:
-%%
-%%    get_tuple_element Tuple Pos Dst1
-%%    ...
-%%    move Dst1 Dst2
-%%
-%%  This code may be possible to rewrite to:
-%%
-%%    %%(Moved get_tuple_element instruction)
-%%    ...
-%%    get_tuple_element Tuple Pos Dst2
-%%
-
-opt_tuple_element([{set,[D],[S],{get_tuple_element,_}}=I|Is0]) ->
-    case opt_tuple_element_1(Is0, I, {S,D}, []) of
-	no ->
-	    [I|opt_tuple_element(Is0)];
-	{yes,Is} ->
-	    opt_tuple_element(Is)
-    end;
-opt_tuple_element([I|Is]) ->
-    [I|opt_tuple_element(Is)];
-opt_tuple_element([]) -> [].
-
-opt_tuple_element_1([{set,_,_,{alloc,_,_}}|_], _, _, _) ->
-    no;
-opt_tuple_element_1([{set,_,_,{try_catch,_,_}}|_], _, _, _) ->
-    no;
-opt_tuple_element_1([{set,[D],[S],move}|Is0], I0, {_,S}, Acc) ->
-    case eliminate_use_of_from_reg(Is0, S, D) of
-	no ->
-	    no;
-	{yes,Is1} ->
-	    {set,[S],Ss,Op} = I0,
-	    I = {set,[D],Ss,Op},
-            case opt_move_rev(S, Acc, [I|Is1]) of
-                not_possible ->
-                    %% Not safe because the move of the
-                    %% get_tuple_element instruction would cause the
-                    %% result of a previous instruction to be ignored.
-                    no;
-                {_,Is} ->
-                    {yes,Is}
-            end
-    end;
-opt_tuple_element_1([{set,Ds,Ss,_}=I|Is], MovedI, {S,D}=Regs, Acc) ->
-    case member(S, Ds) orelse member(D, Ss) of
-	true ->
-	    no;
-	false ->
-	    opt_tuple_element_1(Is, MovedI, Regs, [I|Acc])
-    end;
-opt_tuple_element_1(_, _, _, _) -> no.
-
-%% Reverse the instructions, while checking that there are no
-%% instructions that would interfere with using the new destination
-%% register (D).
-
-opt_move_rev(D, [I|Is], Acc) ->
-    case is_killed_or_used(D, I) of
-	true -> not_possible;
-	false -> opt_move_rev(D, Is, [I|Acc])
-    end;
-opt_move_rev(D, [], Acc) -> {D,Acc}.
-
-%% is_killed_or_used(Register, {set,_,_,_}) -> bool()
-%%  Test whether the register is used by the instruction.
-
-is_killed_or_used(R, {set,Ss,Ds,_}) ->
-    member(R, Ds) orelse member(R, Ss).
-
-%% eliminate_use_of_from_reg([Instruction], FromRegister, ToRegister, Acc) ->
-%%       {yes,Is} | no
-%%  Eliminate any use of FromRegister in the instruction sequence
-%%  by replacing uses of FromRegister with ToRegister. If FromRegister
-%%  is referenced by an allocation instruction, return 'no' to indicate
-%%  that FromRegister is still used and that the optimization is not
-%%  possible.
-
-eliminate_use_of_from_reg(Is, From, To) ->
-    try
-        eliminate_use_of_from_reg(Is, From, To, [])
-    catch
-        throw:not_possible ->
-            no
-    end.
-
-eliminate_use_of_from_reg([{set,_,_,{alloc,Live,_}}|_]=Is0, {x,X}, _, Acc) ->
-    if
-	X < Live ->
-	    no;
-	true ->
-	    {yes,reverse(Acc, Is0)}
-    end;
-eliminate_use_of_from_reg([{set,Ds,Ss0,Op}=I0|Is], From, To, Acc) ->
-    ensure_safe_tuple(I0, To),
-    I = case member(From, Ss0) of
-            true ->
-                Ss = [case S of
-                          From -> To;
-                          _ -> S
-                      end || S <- Ss0],
-                {set,Ds,Ss,Op};
-            false ->
-                I0
-        end,
-    case member(From, Ds) of
-        true ->
-            {yes,reverse(Acc, [I|Is])};
-        false ->
-            case member(To, Ds) of
-                true ->
-                    case beam_utils:is_killed_block(From, Is) of
-                        true ->
-                            {yes,reverse(Acc, [I|Is])};
-                        false ->
-                            no
-                    end;
-                false ->
-                    eliminate_use_of_from_reg(Is, From, To, [I|Acc])
-            end
-    end;
-eliminate_use_of_from_reg([I]=Is, From, _To, Acc) ->
-    case beam_utils:is_killed_block(From, [I]) of
-	true ->
-	    {yes,reverse(Acc, Is)};
-	false ->
-	    no
-    end.
-
-ensure_safe_tuple({set,[To],[],{put_tuple,_}}, To) ->
-    throw(not_possible);
-ensure_safe_tuple(_, _) -> ok.
-
-%% opt_allocs(Instructions) -> Instructions.  Optimize allocate
-%%  instructions inside blocks. If safe, replace an allocate_zero
-%%  instruction with the slightly cheaper allocate instruction.
-
-opt_allocs(Is) ->
-    D = beam_utils:index_labels(Is),
-    opt_allocs_1(Is, D).
-
-opt_allocs_1([{block,Bl0}|Is], D) ->
-    Bl = opt_alloc(Bl0, {D,Is}),
-    [{block,Bl}|opt_allocs_1(Is, D)];
-opt_allocs_1([I|Is], D) ->
-    [I|opt_allocs_1(Is, D)];
-opt_allocs_1([], _) -> [].
-
-%% opt_alloc(Instructions) -> Instructions'
-%%  Optimises all allocate instructions.
-
-opt_alloc([{set,[],[],{alloc,Live0,Info0}},
-           {set,[],[],{alloc,Live,Info}}|Is], D) ->
-    Live = Live0,				%Assertion.
-    Alloc = combine_alloc(Info0, Info),
-    I = {set,[],[],{alloc,Live,Alloc}},
-    opt_alloc([I|Is], D);
-opt_alloc([{set,[],[],{alloc,R,{_,Ns,Nh,[]}}}|Is], D) ->
-    [{set,[],[],opt_alloc(Is, D, Ns, Nh, R)}|Is];
-opt_alloc([I|Is], D) -> [I|opt_alloc(Is, D)];
-opt_alloc([], _) -> [].
-
-combine_alloc({_,Ns,Nh1,Init}, {_,nostack,Nh2,[]})  ->
-    {zero,Ns,beam_utils:combine_heap_needs(Nh1, Nh2),Init}.
-
-%% opt_alloc(Instructions, FrameSize, HeapNeed, LivingRegs) -> [Instr]
-%%  Generates the optimal sequence of instructions for
-%%  allocating and initalizing the stack frame and needed heap.
-
-opt_alloc(_Is, _D, nostack, Nh, LivingRegs) ->
-    {alloc,LivingRegs,{nozero,nostack,Nh,[]}};
-opt_alloc(Bl, {D,OuterIs}, Ns, Nh, LivingRegs) ->
-    Is = [{block,Bl}|OuterIs],
-    InitRegs = init_yregs(Ns, Is, D),
-    case count_ones(InitRegs) of
-	N when N*2 > Ns ->
-	    {alloc,LivingRegs,{nozero,Ns,Nh,gen_init(Ns, InitRegs)}};
-	_ ->
-	    {alloc,LivingRegs,{zero,Ns,Nh,[]}}
-    end.
-
-gen_init(Fs, Regs) -> gen_init(Fs, Regs, 0, []).
-
-gen_init(SameFs, _Regs, SameFs, Acc) -> reverse(Acc);
-gen_init(Fs, Regs, Y, Acc) when Regs band 1 =:= 0 ->
-    gen_init(Fs, Regs bsr 1, Y+1, [{init,{y,Y}}|Acc]);
-gen_init(Fs, Regs, Y, Acc) ->
-    gen_init(Fs, Regs bsr 1, Y+1, Acc).
-
-init_yregs(Y, Is, D) when Y >= 0 ->
-    case beam_utils:is_killed({y,Y}, Is, D) of
-        true ->
-            (1 bsl Y) bor init_yregs(Y-1, Is, D);
-        false ->
-            init_yregs(Y-1, Is, D)
-    end;
-init_yregs(_, _, _) -> 0.
-
-count_ones(Bits) -> count_ones(Bits, 0).
-count_ones(0, Acc) -> Acc;
-count_ones(Bits, Acc) ->
-    count_ones(Bits bsr 1, Acc + (Bits band 1)).
-
-%% Calculate the new number of live registers when we move an allocate
-%% instruction upwards, passing a 'set' instruction.
-
-alloc_live_regs({set,Ds,Ss,_}, Is, Regs0) ->
-    Rset = x_live(Ss, x_dead(Ds, (1 bsl Regs0)-1)),
-    Live = live_regs(0, Rset),
-    case ensure_contiguous(Rset, Live) of
-        not_possible ->
-            %% Liveness information (looking forward in the
-            %% instruction stream) can't prove that moving this
-            %% allocation instruction is safe. Now use the annotation
-            %% of defined registers at the beginning of the current
-            %% block to see whether moving would be safe.
-            Def0 = defined_regs(Is, 0),
-            Def = Def0 band ((1 bsl Live) - 1),
-            ensure_contiguous(Rset bor Def, Live);
-        Live ->
-            %% Safe based on liveness information.
-            Live
-    end.
-
-live_regs(N, 0) ->
-    N;
-live_regs(N, Regs) ->
-    live_regs(N+1, Regs bsr 1).
-
-ensure_contiguous(Regs, Live) ->
-    case (1 bsl Live) - 1 of
-        Regs -> Live;
-        _ -> not_possible
-    end.
-
-x_dead([{x,N}|Rs], Regs) -> x_dead(Rs, Regs band (bnot (1 bsl N)));
-x_dead([_|Rs], Regs) -> x_dead(Rs, Regs);
-x_dead([], Regs) -> Regs.
-
-x_live([{x,N}|Rs], Regs) -> x_live(Rs, Regs bor (1 bsl N));
-x_live([_|Rs], Regs) -> x_live(Rs, Regs);
-x_live([], Regs) -> Regs.
-
-%% defined_regs(ReversedInstructions) -> RegBitmap.
-%%  Given a reversed instruction stream, determine the
-%%  the registers that are defined.
-
-defined_regs([{'%anno',{def,Def}}|_], Regs) ->
-    Def bor Regs;
-defined_regs([{set,Ds,_,{alloc,Live,_}}|_], Regs) ->
-    x_live(Ds, Regs bor ((1 bsl Live) - 1));
-defined_regs([{set,Ds,_,_}|Is], Regs) ->
-    defined_regs(Is, x_live(Ds, Regs)).
-
-%%%
-%%% Do local common sub expression elimination (CSE) in each block.
-%%%
-
-local_cse([{block,Bl0}|Is]) ->
-    Bl = cse_block(Bl0, orddict:new(), []),
-    [{block,Bl}|local_cse(Is)];
-local_cse([I|Is]) ->
-    [I|local_cse(Is)];
-local_cse([]) -> [].
-
-cse_block([I|Is], Es0, Acc0) ->
-    Es1 = cse_clear(I, Es0),
-    case cse_expr(I) of
-        none ->
-            %% Instruction is not suitable for CSE.
-            cse_block(Is, Es1, [I|Acc0]);
-        {ok,D,Expr} ->
-            %% Suitable instruction. First update the dictionary of
-            %% suitable expressions for the next iteration.
-            Es = cse_add(D, Expr, Es1),
-
-            %% Search for a previous identical expression.
-            case cse_find(Expr, Es0) of
-                error ->
-                    %% Nothing found
-                    cse_block(Is, Es, [I|Acc0]);
-                Src ->
-                    %% Use the previously calculated result.
-                    %% Also eliminate any line instruction.
-                    Move = {set,[D],[Src],move},
-                    case Acc0 of
-                        [{set,_,_,{line,_}}|Acc] ->
-                            cse_block(Is, Es, [Move|Acc]);
-                        [_|_] ->
-                            cse_block(Is, Es, [Move|Acc0])
-                    end
-            end
-    end;
-cse_block([], _, Acc) ->
-    reverse(Acc).
-
-%% cse_find(Expr, Expressions) -> error | Register.
-%%  Find a previously evaluated expression whose result can be reused,
-%%  or return 'error' if no such expression is found.
-
-cse_find(Expr, Es) ->
-    case orddict:find(Expr, Es) of
-        {ok,{Src,_}} -> Src;
-        error -> error
-    end.
-
-cse_expr({set,[D],Ss,{bif,N,_}}) ->
-    case D of
-        {fr,_} ->
-            %% There are too many things that can go wrong.
-            none;
-        _ ->
-            {ok,D,{{bif,N},Ss}}
-    end;
-cse_expr({set,[D],Ss,{alloc,_,{gc_bif,N,_}}}) ->
-    {ok,D,{{gc_bif,N},Ss}};
-cse_expr({set,[D],Ss,put_list}) ->
-    {ok,D,{put_list,Ss}};
-cse_expr(_) -> none.
-
-%% cse_clear(Instr, Expressions0) -> Expressions.
-%%  Remove all previous expressions that will become
-%%  invalid when this instruction is executed. Basically,
-%%  an expression is no longer safe to reuse when the
-%%  register it has been stored to has been modified, killed,
-%%  or if any of the source operands have changed.
-
-cse_clear({set,Ds,_,{alloc,Live,_}}, Es) ->
-    cse_clear_1(Es, Live, Ds);
-cse_clear({set,Ds,_,_}, Es) ->
-    cse_clear_1(Es, all, Ds).
-
-cse_clear_1(Es, Live, Ds0) ->
-    Ds = ordsets:from_list(Ds0),
-    [E || E <- Es, cse_is_safe(E, Live, Ds)].
-
-cse_is_safe({_,{Dst,Interfering}}, Live, Ds) ->
-    ordsets:is_disjoint(Interfering, Ds) andalso
-        case Dst of
-            {x,X} ->
-                X < Live;
-            _ ->
-                true
-        end.
-
-%% cse_add(Dest, Expr, Expressions0) -> Expressions.
-%%  Provided that it is safe, add a new expression to the dictionary
-%%  of already evaluated expressions.
-
-cse_add(D, {_,Ss}=Expr, Es) ->
-    case member(D, Ss) of
-        false ->
-            Interfering = ordsets:from_list([D|Ss]),
-            orddict:store(Expr, {D,Interfering}, Es);
-        true ->
-            %% Unsafe because the instruction overwrites one of
-            %% source operands.
-            Es
+%% sort_moves([Instruction]) -> [Instruction].
+%%  Sort move instructions on the Y register to give the loader
+%%  more opportunities for combining instructions.
+
+sort_moves([{set,[{x,_}],[{y,_}],move}=I|Is0]) ->
+    {Moves,Is} = sort_moves_1(Is0, x, y, [I]),
+    Moves ++ sort_moves(Is);
+sort_moves([{set,[{y,_}],[{x,_}],move}=I|Is0]) ->
+    {Moves,Is} = sort_moves_1(Is0, y, x, [I]),
+    Moves ++ sort_moves(Is);
+sort_moves([I|Is]) ->
+    [I|sort_moves(Is)];
+sort_moves([]) -> [].
+
+sort_moves_1([{set,[{x,0}],[_],move}=I|Is], _DTag, _STag, Acc) ->
+    %% The loader sometimes combines a move to x0 with the
+    %% instruction that follows, producing, for example, a move_call
+    %% instruction. Therefore, we don't want include this move
+    %% instruction in the sorting.
+    {sort_on_yreg(Acc)++[I],Is};
+sort_moves_1([{set,[{DTag,_}],[{STag,_}],move}=I|Is], DTag, STag, Acc) ->
+    sort_moves_1(Is, DTag, STag, [I|Acc]);
+sort_moves_1(Is, _DTag, _STag, Acc) ->
+    {sort_on_yreg(Acc),Is}.
+
+sort_on_yreg([{set,[Dst],[Src],move}|_]=Moves) ->
+    case {Dst,Src} of
+        {{y,_},{x,_}} ->
+            keysort(2, Moves);
+        {{x,_},{y,_}} ->
+            keysort(3, Moves)
     end.
diff --git a/lib/compiler/src/beam_bs.erl b/lib/compiler/src/beam_bs.erl
deleted file mode 100644
index 5f1b9ed488..0000000000
--- a/lib/compiler/src/beam_bs.erl
+++ /dev/null
@@ -1,280 +0,0 @@
-%%
-%% %CopyrightBegin%
-%%
-%% Copyright Ericsson AB 1999-2018. All Rights Reserved.
-%%
-%% Licensed under the Apache License, Version 2.0 (the "License");
-%% you may not use this file except in compliance with the License.
-%% You may obtain a copy of the License at
-%%
-%%     http://www.apache.org/licenses/LICENSE-2.0
-%%
-%% Unless required by applicable law or agreed to in writing, software
-%% distributed under the License is distributed on an "AS IS" BASIS,
-%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-%% See the License for the specific language governing permissions and
-%% limitations under the License.
-%%
-%% %CopyrightEnd%
-%%
-%% Purpose : Partitions assembly instructions into basic blocks and
-%% optimizes them.
-
--module(beam_bs).
-
--export([module/2]).
--import(lists, [mapfoldl/3,reverse/1]).
-
--spec module(beam_utils:module_code(), [compile:option()]) ->
-                    {'ok',beam_utils:module_code()}.
-
-module({Mod,Exp,Attr,Fs0,Lc0}, _Opt) ->
-    {Fs,Lc} = mapfoldl(fun function/2, Lc0, Fs0),
-    {ok,{Mod,Exp,Attr,Fs,Lc}}.
-
-function({function,Name,Arity,CLabel,Is0}, Lc0) ->
-    try
-	Is1 = bs_put_opt(Is0),
-	{Is,Lc} = bsm_opt(Is1, Lc0),
-	{{function,Name,Arity,CLabel,Is},Lc}
-    catch
-        Class:Error:Stack ->
-	    io:fwrite("Function: ~w/~w\n", [Name,Arity]),
-	    erlang:raise(Class, Error, Stack)
-    end.
-
-%%%
-%%% Evaluation of constant bit fields.
-%%%
-
-bs_put_opt([{bs_put,_,_,_}=I|Is0]) ->
-    {BsPuts0,Is} = collect_bs_puts(Is0, [I]),
-    BsPuts = opt_bs_puts(BsPuts0),
-    BsPuts ++ bs_put_opt(Is);
-bs_put_opt([I|Is]) ->
-    [I|bs_put_opt(Is)];
-bs_put_opt([]) -> [].
-
-collect_bs_puts([{bs_put,_,_,_}=I|Is], Acc) ->
-    collect_bs_puts(Is, [I|Acc]);
-collect_bs_puts([_|_]=Is, Acc) ->
-    {reverse(Acc),Is}.
-
-opt_bs_puts(Is) ->
-    opt_bs_1(Is, []).
-
-opt_bs_1([{bs_put,Fail,
-	   {bs_put_float,1,Flags0},[{integer,Sz},Src]}=I0|Is], Acc) ->
-    try eval_put_float(Src, Sz, Flags0) of
-	<<Int:Sz>> ->
-	    Flags = force_big(Flags0),
-	    I = {bs_put,Fail,{bs_put_integer,1,Flags},
-		 [{integer,Sz},{integer,Int}]},
-	    opt_bs_1([I|Is], Acc)
-    catch
-	error:_ ->
-	    opt_bs_1(Is, [I0|Acc])
-    end;
-opt_bs_1([{bs_put,_,{bs_put_integer,1,_},[{integer,8},{integer,_}]}|_]=IsAll,
-	 Acc0) ->
-    {Is,Acc} = bs_collect_string(IsAll, Acc0),
-    opt_bs_1(Is, Acc);
-opt_bs_1([{bs_put,Fail,{bs_put_integer,1,F},[{integer,Sz},{integer,N}]}=I|Is0],
-	 Acc) when Sz > 8 ->
-    case field_endian(F) of
-	big ->
-	    %% We can do this optimization for any field size without
-	    %% risk for code explosion.
-	    case bs_split_int(N, Sz, Fail, Is0) of
-		no_split -> opt_bs_1(Is0, [I|Acc]);
-		Is -> opt_bs_1(Is, Acc)
-	    end;
-	little when Sz < 128 ->
-	    %% We only try to optimize relatively small fields, to
-	    %% avoid an explosion in code size.
-	    <<Int:Sz>> = <<N:Sz/little>>,
-	    Flags = force_big(F),
-	    Is = [{bs_put,Fail,{bs_put_integer,1,Flags},
-		   [{integer,Sz},{integer,Int}]}|Is0],
-	    opt_bs_1(Is, Acc);
-	_ ->			      %native or too wide little field
-	    opt_bs_1(Is0, [I|Acc])
-    end;
-opt_bs_1([{bs_put,Fail,{Op,U,F},[{integer,Sz},Src]}|Is], Acc) when U > 1 ->
-    opt_bs_1([{bs_put,Fail,{Op,1,F},[{integer,U*Sz},Src]}|Is], Acc);
-opt_bs_1([I|Is], Acc) ->
-    opt_bs_1(Is, [I|Acc]);
-opt_bs_1([], Acc) -> reverse(Acc).
-
-eval_put_float(Src, Sz, Flags) when Sz =< 256 ->
-    %%Only evaluate if Sz is reasonable.
-    Val = value(Src),
-    case field_endian(Flags) of
-	little -> <<Val:Sz/little-float-unit:1>>;
-	big -> <<Val:Sz/big-float-unit:1>>
-        %% native intentionally not handled here - we can't optimize
-        %% it.
-    end.
-
-value({integer,I}) -> I;
-value({float,F}) -> F.
-
-bs_collect_string(Is, [{bs_put,_,{bs_put_string,Len,{string,Str}},[]}|Acc]) ->
-    bs_coll_str_1(Is, Len, reverse(Str), Acc);
-bs_collect_string(Is, Acc) ->
-    bs_coll_str_1(Is, 0, [], Acc).
-
-bs_coll_str_1([{bs_put,_,{bs_put_integer,U,_},[{integer,Sz},{integer,V}]}|Is],
-	      Len, StrAcc, IsAcc) when U*Sz =:= 8 ->
-    Byte = V band 16#FF,
-    bs_coll_str_1(Is, Len+1, [Byte|StrAcc], IsAcc);
-bs_coll_str_1(Is, Len, StrAcc, IsAcc) ->
-    {Is,[{bs_put,{f,0},{bs_put_string,Len,{string,reverse(StrAcc)}},[]}|IsAcc]}.
-
-field_endian({field_flags,F}) -> field_endian_1(F).
-
-field_endian_1([big=E|_]) -> E;
-field_endian_1([little=E|_]) -> E;
-field_endian_1([native=E|_]) -> E;
-field_endian_1([_|Fs]) -> field_endian_1(Fs).
-
-force_big({field_flags,F}) ->
-    {field_flags,force_big_1(F)}.
-
-force_big_1([big|_]=Fs) -> Fs;
-force_big_1([little|Fs]) -> [big|Fs];
-force_big_1([F|Fs]) -> [F|force_big_1(Fs)].
-
-bs_split_int(0, Sz, _, _) when Sz > 64 ->
-    %% We don't want to split in this case because the
-    %% string will consist of only zeroes.
-    no_split;
-bs_split_int(-1, Sz, _, _) when Sz > 64 ->
-    %% We don't want to split in this case because the
-    %% string will consist of only 255 bytes.
-    no_split;
-bs_split_int(N, Sz, Fail, Acc) ->
-    FirstByteSz = case Sz rem 8 of
-		      0 -> 8;
-		      Rem -> Rem
-		  end,
-    bs_split_int_1(N, FirstByteSz, Sz, Fail, Acc).
-
-bs_split_int_1(-1, _, Sz, Fail, Acc) when Sz > 64 ->
-    I = {bs_put,Fail,{bs_put_integer,1,{field_flags,[big]}},
-	 [{integer,Sz},{integer,-1}]},
-    [I|Acc];
-bs_split_int_1(0, _, Sz, Fail, Acc) when Sz > 64 ->
-    I = {bs_put,Fail,{bs_put_integer,1,{field_flags,[big]}},
-	 [{integer,Sz},{integer,0}]},
-    [I|Acc];
-bs_split_int_1(N, ByteSz, Sz, Fail, Acc) when Sz > 0 ->
-    Mask = (1 bsl ByteSz) - 1,
-    I = {bs_put,Fail,{bs_put_integer,1,{field_flags,[big]}},
-	 [{integer,ByteSz},{integer,N band Mask}]},
-    bs_split_int_1(N bsr ByteSz, 8, Sz-ByteSz, Fail, [I|Acc]);
-bs_split_int_1(_, _, _, _, Acc) -> Acc.
-
-%%%
-%%% Optimization of bit syntax matching: get rid
-%%% of redundant bs_restore2/2 instructions across select_val
-%%% instructions, as well as a few other simple peep-hole
-%%% optimizations.
-%%%
-
-bsm_opt(Is0, Lc0) ->
-    {Is1,D0,Lc} = bsm_scan(Is0, [], Lc0, []),
-    Is2 = case D0 of
-	      [] ->
-		  %% No bit syntax matching in this function.
-		  Is1;
-	      [_|_] ->
-		  %% Optimize the bit syntax matching.
-		  D = gb_trees:from_orddict(orddict:from_list(D0)),
-		  bsm_reroute(Is1, D, none, [])
-	 end,
-    Is = beam_clean:bs_clean_saves(Is2),
-    {bsm_opt_2(Is, []),Lc}.
-
-bsm_scan([{label,L}=Lbl,{bs_restore2,_,Save}=R|Is], D0, Lc, Acc0) ->
-    D = [{{L,Save},Lc}|D0],
-    Acc = [{label,Lc},R,Lbl|Acc0],
-    bsm_scan(Is, D, Lc+1, Acc);
-bsm_scan([I|Is], D, Lc, Acc) ->
-    bsm_scan(Is, D, Lc, [I|Acc]);
-bsm_scan([], D, Lc, Acc) ->
-    {reverse(Acc),D,Lc}.
-
-bsm_reroute([{bs_save2,Reg,Save}=I|Is], D, _, Acc) ->
-    bsm_reroute(Is, D, {Reg,Save}, [I|Acc]);
-bsm_reroute([{bs_restore2,Reg,Save}=I|Is], D, _, Acc) ->
-    bsm_reroute(Is, D, {Reg,Save}, [I|Acc]);
-bsm_reroute([{label,_}=I|Is], D, S, Acc) ->
-    bsm_reroute(Is, D, S, [I|Acc]);
-bsm_reroute([{select,select_val,Reg,F0,Lbls0}|Is], D, {_,Save}=S, Acc0) ->
-    [F|Lbls] = bsm_subst_labels([F0|Lbls0], Save, D),
-    Acc = [{select,select_val,Reg,F,Lbls}|Acc0],
-    bsm_reroute(Is, D, S, Acc);
-bsm_reroute([{test,TestOp,F0,TestArgs}=I|Is], D, {_,Save}=S, Acc0) ->
-    F = bsm_subst_label(F0, Save, D),
-    Acc = [{test,TestOp,F,TestArgs}|Acc0],
-    case bsm_not_bs_test(I) of
-	true ->
-	    %% The test instruction will not update the bit offset for
-	    %% the binary being matched. Therefore the save position
-	    %% can be kept.
-	    bsm_reroute(Is, D, S, Acc);
-	false ->
-	    %% The test instruction might update the bit offset. Kill
-	    %% our remembered Save position.
-	    bsm_reroute(Is, D, none, Acc)
-    end;
-bsm_reroute([{test,TestOp,F0,Live,TestArgs,Dst}|Is], D, {_,Save}, Acc0) ->
-    F = bsm_subst_label(F0, Save, D),
-    Acc = [{test,TestOp,F,Live,TestArgs,Dst}|Acc0],
-    %% The test instruction will update the bit offset. Kill our
-    %% remembered Save position.
-    bsm_reroute(Is, D, none, Acc);
-bsm_reroute([{block,[{set,[],[],{alloc,_,_}}]}=Bl,
-	     {bs_context_to_binary,_}=I|Is], D, S, Acc) ->
-    %% To help further bit syntax optimizations.
-    bsm_reroute([I,Bl|Is], D, S, Acc);
-bsm_reroute([I|Is], D, _, Acc) ->
-    bsm_reroute(Is, D, none, [I|Acc]);
-bsm_reroute([], _, _, Acc) -> reverse(Acc).
-
-bsm_opt_2([{test,bs_test_tail2,F,[Ctx,Bits]}|Is],
-	  [{test,bs_skip_bits2,F,[Ctx,{integer,I},Unit,_Flags]}|Acc]) ->
-    bsm_opt_2(Is, [{test,bs_test_tail2,F,[Ctx,Bits+I*Unit]}|Acc]);
-bsm_opt_2([{test,bs_skip_bits2,F,[Ctx,{integer,I1},Unit1,_]}|Is],
-	  [{test,bs_skip_bits2,F,[Ctx,{integer,I2},Unit2,Flags]}|Acc]) ->
-    bsm_opt_2(Is, [{test,bs_skip_bits2,F,
-		    [Ctx,{integer,I1*Unit1+I2*Unit2},1,Flags]}|Acc]);
-bsm_opt_2([I|Is], Acc) ->
-    bsm_opt_2(Is, [I|Acc]);
-bsm_opt_2([], Acc) -> reverse(Acc).
-
-%% bsm_not_bs_test({test,Name,_,Operands}) -> true|false.
-%%  Test whether is the test is a "safe", i.e. does not move the
-%%  bit offset for a binary.
-%%
-%%  'true' means that the test is safe, 'false' that we don't know or
-%%  that the test moves the offset (e.g. bs_get_integer2).
-
-bsm_not_bs_test({test,bs_test_tail2,_,[_,_]}) -> true;
-bsm_not_bs_test(Test) -> beam_utils:is_pure_test(Test).
-
-bsm_subst_labels(Fs, Save, D) ->
-    bsm_subst_labels_1(Fs, Save, D, []).
-
-bsm_subst_labels_1([F|Fs], Save, D, Acc) ->
-    bsm_subst_labels_1(Fs, Save, D, [bsm_subst_label(F, Save, D)|Acc]);
-bsm_subst_labels_1([], _, _, Acc) ->
-    reverse(Acc).
-
-bsm_subst_label({f,Lbl0}=F, Save, D) ->
-    case gb_trees:lookup({Lbl0,Save}, D) of
-	{value,Lbl} -> {f,Lbl};
-	none -> F
-    end;
-bsm_subst_label(Other, _, _) -> Other.
diff --git a/lib/compiler/src/beam_bsm.erl b/lib/compiler/src/beam_bsm.erl
deleted file mode 100644
index 1c8e0e9854..0000000000
--- a/lib/compiler/src/beam_bsm.erl
+++ /dev/null
@@ -1,708 +0,0 @@
-%%
-%% %CopyrightBegin%
-%% 
-%% Copyright Ericsson AB 2007-2018. All Rights Reserved.
-%% 
-%% Licensed under the Apache License, Version 2.0 (the "License");
-%% you may not use this file except in compliance with the License.
-%% You may obtain a copy of the License at
-%%
-%%     http://www.apache.org/licenses/LICENSE-2.0
-%%
-%% Unless required by applicable law or agreed to in writing, software
-%% distributed under the License is distributed on an "AS IS" BASIS,
-%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-%% See the License for the specific language governing permissions and
-%% limitations under the License.
-%% 
-%% %CopyrightEnd%
-%%
-
--module(beam_bsm).
--export([module/2,format_error/1]).
-
--import(lists, [member/2,foldl/3,reverse/1,sort/1,all/2]).
-
-%%%
-%%% We optimize bit syntax matching where the tail end of a binary is
-%%% matched out and immediately passed on to a bs_start_match2 instruction,
-%%% such as in this code sequence:
-%%%
-%%%     func_info ...
-%%% L1	test bs_start_match2 {f,...} {x,0} Live SavePositions {x,0}
-%%%              . . .
-%%%     test bs_get_binary2 {f,...} {x,0} all 1 Flags {x,0}
-%%%              . . .
-%%%     call_only 2 L1
-%%%
-%%% The sequence can be optimized simply by removing the bs_get_binary2
-%%% instruction. Another example:
-%%%
-%%%     func_info ...
-%%% L1	test bs_start_match2 {f,...} {x,0} Live SavePositions {x,0}
-%%%              . . .
-%%%     test bs_get_binary2 {f,...} {x,0} all 8 Flags {x,1}
-%%%              . . .
-%%%     move {x,1} {x,0}
-%%%     call_only 2 L1
-%%%
-%%% In this case, the bs_get_binary2 instruction must be replaced by
-%%%
-%%%	test bs_unit {x,1} 8
-%%%
-%%% to ensure that the match fail if the length of the binary in bits
-%%% is not evenly divisible by 8.
-%%%
-%%% Note that the bs_start_match2 instruction doesn't need to be in the same
-%%% function as the caller. It can be in the beginning of any function, or
-%%% follow the bs_get_binary2 instruction in the same function. The important
-%%% thing is that the match context register is not copied or built into
-%%% data structures or passed to BIFs.
-%%%
-
--type label() :: beam_asm:label().
--type func_info() :: {beam_asm:reg(),boolean()}.
-
--record(btb,
-	{f :: gb_trees:tree(label(), func_info()),
-	 index :: beam_utils:code_index(), %{Label,Code} index (for liveness).
-	 ok_br=gb_sets:empty() :: gb_sets:set(label()), %Labels that are OK.
-	 must_not_save=false :: boolean(), %Must not save position when
-					   % optimizing (reaches
-                                           % bs_context_to_binary).
-	 must_save=false :: boolean() %Must save position when optimizing.
-	}).
-
-
--spec module(beam_utils:module_code(), [compile:option()]) ->
-                    {'ok',beam_utils:module_code()}.
-
-module({Mod,Exp,Attr,Fs0,Lc}, Opts) ->
-    FIndex = btb_index(Fs0),
-    Fs = [function(F, FIndex) || F <- Fs0],
-    Code = {Mod,Exp,Attr,Fs,Lc},
-    case proplists:get_bool(bin_opt_info, Opts) of
-	true ->
-	    {ok,Code,collect_warnings(Fs)};
-	false ->
-	    {ok,Code}
-    end.
-
--spec format_error('bin_opt' | {'no_bin_opt', term()}) -> nonempty_string().
-
-format_error(bin_opt) ->
-    "OPTIMIZED: creation of sub binary delayed";
-format_error({no_bin_opt,Reason}) ->
-    lists:flatten(["NOT OPTIMIZED: "|format_error_1(Reason)]).
-
-%%%
-%%% Local functions.
-%%% 
-
-function({function,Name,Arity,Entry,Is}, FIndex) ->
-    try
-	Index = beam_utils:index_labels(Is),
-	D = #btb{f=FIndex,index=Index},
-	{function,Name,Arity,Entry,btb_opt_1(Is, D, [])}
-    catch
-        Class:Error:Stack ->
-	    io:fwrite("Function: ~w/~w\n", [Name,Arity]),
-	    erlang:raise(Class, Error, Stack)
-    end.
-
-btb_opt_1([{test,bs_get_binary2,F,_,[Reg,{atom,all},U,Fs],Reg}=I0|Is], D, Acc0) ->
-    case btb_reaches_match(Is, [Reg], D) of
-	{error,Reason} ->
-	    Comment = btb_comment_no_opt(Reason, Fs),
-	    btb_opt_1(Is, D, [Comment,I0|Acc0]);
-	{ok,MustSave} ->
-	    Comment = btb_comment_opt(Fs),
-	    Acc1 = btb_gen_save(MustSave, Reg, [Comment|Acc0]),
-	    Acc = case U of
-		      1 -> Acc1;
-		      _ -> [{test,bs_test_unit,F,[Reg,U]}|Acc1]
-		  end,
-	    btb_opt_1(Is, D, Acc)
-    end;
-btb_opt_1([{test,bs_get_binary2,F,_,[Ctx,{atom,all},U,Fs],Dst}=I0|Is0], D, Acc0) ->
-    case btb_reaches_match(Is0, [Ctx,Dst], D) of
-	{error,Reason} ->
-	    Comment = btb_comment_no_opt(Reason, Fs),
-	    btb_opt_1(Is0, D, [Comment,I0|Acc0]);
-	{ok,MustSave} when U =:= 1 ->
-	    Comment = btb_comment_opt(Fs),
-            Acc = btb_gen_save(MustSave, Ctx, [Comment|Acc0]),
-            Is = prepend_move(Ctx, Dst, Is0),
-	    btb_opt_1(Is, D, Acc);
-	{ok,MustSave} ->
-	    Comment = btb_comment_opt(Fs),
-	    Acc1 = btb_gen_save(MustSave, Ctx, [Comment|Acc0]),
-            Acc = [{test,bs_test_unit,F,[Ctx,U]}|Acc1],
-            Is = prepend_move(Ctx, Dst, Is0),
-	    btb_opt_1(Is, D, Acc)
-    end;
-btb_opt_1([I|Is], D, Acc) ->
-    %%io:format("~p\n", [I]),
-    btb_opt_1(Is, D, [I|Acc]);
-btb_opt_1([], _, Acc) ->
-    reverse(Acc).
-
-btb_gen_save(true, Reg, Acc) ->
-    [{bs_save2,Reg,{atom,start}}|Acc];
-btb_gen_save(false, _, Acc) -> Acc.
-
-prepend_move(Ctx, Dst, [{block,Bl0}|Is]) ->
-    Bl = [{set,[Dst],[Ctx],move}|Bl0],
-    [{block,Bl}|Is];
-prepend_move(Ctx, Dst, Is) ->
-    [{move,Ctx,Dst}|Is].
-
-%% btb_reaches_match([Instruction], [Register], D) ->
-%%   {ok,MustSave}|{error,Reason}
-%%
-%%  The list of Registers should be a list of registers referencing a
-%%  match context. The Register may contain one element if the
-%%  bs_get_binary2 instruction looks like
-%%
-%%    test bs_get_binary2 {f,...} Ctx all _ _ Ctx
-%%
-%%  or two elements if the instruction looks like
-%%
-%%    test bs_get_binary2 {f,...} Ctx all _ _ Dst
-%%
-%%  This function determines whether the bs_get_binary2 instruction
-%%  can be omitted (retaining the match context instead of creating
-%%  a sub binary).
-%%
-%%  The rule is that the match context ultimately must end up at a
-%%  bs_start_match2 instruction and nowhere else. That it, it must not
-%%  be passed to BIFs, or copied or put into data structures. There
-%%  must only be one copy alive when the match context reaches the
-%%  bs_start_match2 instruction.
-%%
-%%  At a branch, we must follow all branches and make sure that the above
-%%  rule is followed (or that the branch kills the match context).
-%%
-%%  The MustSave return value will be true if control may end up at
-%%  bs_context_to_binary instruction. Since that instruction uses the
-%%  saved start position, we must use "bs_save2 Ctx start" to
-%%  update the saved start position. An additional complication is that
-%%  "bs_save2 Ctx start" must not be used if Dst and Ctx are
-%%  different registers and both registers may be passed to
-%%  a bs_context_to_binary instruction.
-%% 
-
-btb_reaches_match(Is, RegList, D) ->
-    try
-	Regs = btb_regs_from_list(RegList),
-	#btb{must_not_save=MustNotSave,must_save=MustSave} =
-            btb_reaches_match_1(Is, Regs, D),
-	case MustNotSave andalso MustSave of
-	    true -> btb_error(must_and_must_not_save);
-	    false -> {ok,MustSave}
-	end
-    catch
-	throw:{error,_}=Error -> Error
-    end.
-
-btb_reaches_match_1(Is, Regs, D) ->
-    case btb_are_registers_empty(Regs) of
-	false ->
-	    btb_reaches_match_2(Is, Regs, D);
-	true ->
-	    %% The context was killed, which is OK.
-	    D
-    end.
-
-btb_reaches_match_2([{block,Bl}|Is], Regs0, D) ->
-    Regs = btb_reaches_match_block(Bl, Regs0),
-    btb_reaches_match_1(Is, Regs, D);
-btb_reaches_match_2([{call,Arity,{f,Lbl}}|Is], Regs0, D) ->
-    case is_tail_call(Is) of
-	true ->
-	    Regs1 = btb_kill_not_live(Arity, Regs0),
-	    Regs = btb_kill_yregs(Regs1),
-	    btb_tail_call(Lbl, Regs, D);
-	false ->
-	    btb_call(Arity, Lbl, Regs0, Is, D)
-    end;
-btb_reaches_match_2([{apply,Arity}|Is], Regs, D) ->
-    btb_call(Arity+2, apply, Regs, Is, D);
-btb_reaches_match_2([{call_fun,Live}=I|Is], Regs, D) ->
-    btb_ensure_not_used([{x,Live}], I, Regs),
-    btb_call(Live, I, Regs, Is, D);
-btb_reaches_match_2([{make_fun2,_,_,_,Live}|Is], Regs, D) ->
-    btb_call(Live, make_fun2, Regs, Is, D);
-btb_reaches_match_2([{call_ext,Arity,Func}=I|Is], Regs0, D) ->
-    %% Allow us scanning beyond the call in case the match
-    %% context is saved on the stack.
-    case beam_jump:is_exit_instruction(I) of
-	false ->
-	    btb_call(Arity, Func, Regs0, Is, D);
-	true ->
-	    Regs = btb_kill_not_live(Arity, Regs0),
-	    btb_tail_call(Func, Regs, D)
-    end;
-btb_reaches_match_2([{kill,Y}|Is], Regs, D) ->
-    btb_reaches_match_1(Is, btb_kill([Y], Regs), D);
-btb_reaches_match_2([{deallocate,_}|Is], Regs0, D) ->
-    Regs = btb_kill_yregs(Regs0),
-    btb_reaches_match_1(Is, Regs, D);
-btb_reaches_match_2([return=I|_], Regs0, D) ->
-    btb_ensure_not_used([{x,0}], I, Regs0),
-    D;
-btb_reaches_match_2([{gc_bif,_,{f,F},Live,Ss,Dst}=I|Is], Regs0, D0) ->
-    btb_ensure_not_used(Ss, I, Regs0),
-    Regs1 = btb_kill_not_live(Live, Regs0),
-    Regs = btb_kill([Dst], Regs1),
-    D = btb_follow_branch(F, Regs, D0),
-    btb_reaches_match_1(Is, Regs, D);
-btb_reaches_match_2([{bif,_,{f,F},Ss,Dst}=I|Is], Regs0, D0) ->
-    btb_ensure_not_used(Ss, I, Regs0),
-    Regs = btb_kill([Dst], Regs0),
-    D = btb_follow_branch(F, Regs, D0),
-    btb_reaches_match_1(Is, Regs, D);
-btb_reaches_match_2([{get_map_elements,{f,F},Src,{list,Ls}}=I|Is], Regs0, D0) ->
-    {Ss,Ds} = beam_utils:split_even(Ls),
-    btb_ensure_not_used([Src|Ss], I, Regs0),
-    Regs = btb_kill(Ds, Regs0),
-    D = btb_follow_branch(F, Regs, D0),
-    btb_reaches_match_1(Is, Regs, D);
-btb_reaches_match_2([{test,bs_start_match2,{f,F},Live,[Ctx,_],Ctx}=I|Is],
-		    Regs0, D0) ->
-    CtxRegs = btb_context_regs(Regs0),
-    case member(Ctx, CtxRegs) of
-	false ->
-	    %% This bs_start_match2 instruction does not use "our"
-	    %% match state. Therefore we can continue the search
-	    %% for another bs_start_match2 instruction.
-	    D = btb_follow_branch(F, Regs0, D0),
-	    Regs = btb_kill_not_live(Live, Regs0),
-	    btb_reaches_match_2(Is, Regs, D);
-	true ->
-	    %% OK. This instruction will use "our" match state,
-	    %% but we must make sure that all other copies of the
-	    %% match state are killed in the code that follows
-	    %% the instruction. (We know that the fail branch cannot
-	    %% be taken in this case.)
-	    OtherCtxRegs = CtxRegs -- [Ctx],
-	    case btb_are_all_unused(OtherCtxRegs, Is, D0) of
-		false -> btb_error({OtherCtxRegs,not_all_unused_after,I});
-		true -> D0
-	    end
-    end;
-btb_reaches_match_2([{test,bs_start_match2,{f,F},Live,[Bin,_],Ctx}|Is],
-		    Regs0, D0) ->
-    CtxRegs = btb_context_regs(Regs0),
-    case member(Bin, CtxRegs) orelse member(Ctx, CtxRegs) of
-	false ->
-	    %% This bs_start_match2 does not reference any copy of the
-	    %% match state. Therefore it can safely be passed on the
-	    %% way to another (perhaps more suitable) bs_start_match2
-	    %% instruction.
-	    D = btb_follow_branch(F, Regs0, D0),
-	    Regs = btb_kill_not_live(Live, Regs0),
-	    btb_reaches_match_2(Is, Regs, D);
-	true ->
-	    %% This variant of the bs_start_match2 instruction does
-	    %% not accept a match state as source.
-	    btb_error(unsuitable_bs_start_match)
-    end;
-btb_reaches_match_2([{test,_,{f,F},Ss}=I|Is], Regs, D0) ->
-    btb_ensure_not_used(Ss, I, Regs),
-    D = btb_follow_branch(F, Regs, D0),
-    btb_reaches_match_1(Is, Regs, D);
-btb_reaches_match_2([{test,_,{f,F},_,Ss,_}=I|Is], Regs, D0) ->
-    btb_ensure_not_used(Ss, I, Regs),
-    D = btb_follow_branch(F, Regs, D0),
-    btb_reaches_match_1(Is, Regs, D);
-btb_reaches_match_2([{select,_,Src,{f,F},Conds}=I|Is], Regs, D0) ->
-    btb_ensure_not_used([Src], I, Regs),
-    D1 = btb_follow_branch(F, Regs, D0),
-    D = btb_follow_branches(Conds, Regs, D1),
-    btb_reaches_match_1(Is, Regs, D);
-btb_reaches_match_2([{jump,{f,Lbl}}|_], Regs, #btb{index=Li}=D) ->
-    Is = fetch_code_at(Lbl, Li),
-    btb_reaches_match_2(Is, Regs, D);
-btb_reaches_match_2([{label,_}|Is], Regs, D) ->
-    btb_reaches_match_2(Is, Regs, D);
-btb_reaches_match_2([{bs_init,{f,0},_,_,Ss,Dst}=I|Is], Regs, D) ->
-    btb_ensure_not_used(Ss, I, Regs),
-    btb_reaches_match_1(Is, btb_kill([Dst], Regs), D);
-btb_reaches_match_2([{bs_put,{f,0},_,Ss}=I|Is], Regs, D) ->
-    btb_ensure_not_used(Ss, I, Regs),
-    btb_reaches_match_1(Is, Regs, D);
-btb_reaches_match_2([{bs_restore2,Src,_}=I|Is], Regs0, D) ->
-    case btb_contains_context(Src, Regs0) of
-	false ->
-	    btb_reaches_match_1(Is, Regs0, D);
-	true ->
-	    %% Check that all other copies of the context registers
-	    %% are unused by the following instructions.
-	    Regs = btb_kill([Src], Regs0),
-	    CtxRegs = btb_context_regs(Regs),
-	    case btb_are_all_unused(CtxRegs, Is, D) of
-		false -> btb_error({CtxRegs,not_all_unused_after,I});
-		true -> D#btb{must_not_save=true}
-	    end
-    end;
-btb_reaches_match_2([{bs_context_to_binary,Src}=I|Is], Regs0, D) ->
-    case btb_contains_context(Src, Regs0) of
-	false ->
-	    btb_reaches_match_1(Is, Regs0, D);
-	true ->
-	    %% Check that all other copies of the context registers
-	    %% are unused by the following instructions.
-	    Regs = btb_kill([Src], Regs0),
-	    CtxRegs = btb_context_regs(Regs),
-	    case btb_are_all_unused(CtxRegs, Is, D) of
-		false -> btb_error({CtxRegs,not_all_unused_after,I});
-		true -> D#btb{must_not_save=true}
-	    end
-    end;
-btb_reaches_match_2([{badmatch,Src}=I|_], Regs, D) ->
-    btb_ensure_not_used([Src], I, Regs),
-    D;
-btb_reaches_match_2([{case_end,Src}=I|_], Regs, D) ->
-    btb_ensure_not_used([Src], I, Regs),
-    D;
-btb_reaches_match_2([if_end|_], _Regs, D) ->
-    D;
-btb_reaches_match_2([{func_info,_,_,Arity}=I|_], Regs0, D) ->
-    Regs = btb_kill_yregs(btb_kill_not_live(Arity, Regs0)),
-    case btb_context_regs(Regs) of
-	[] -> D;
-	_ -> {binary_used_in,I}
-    end;
-btb_reaches_match_2([{line,_}|Is], Regs, D) ->
-    btb_reaches_match_1(Is, Regs, D);
-btb_reaches_match_2([I|_], Regs, _) ->
-    btb_error({btb_context_regs(Regs),I,not_handled}).
-
-is_tail_call([{deallocate,_}|_]) -> true;
-is_tail_call([return|_]) -> true;
-is_tail_call(_) -> false.
-
-btb_call(Arity, Lbl, Regs0, Is, D0) ->
-    Regs = btb_kill_not_live(Arity, Regs0),
-    case btb_are_x_registers_empty(Regs) of
-	false ->
-	    %% There is a match context in one of the x registers.
-	    %% First handle the call as if it were a tail call.
-	    D = btb_tail_call(Lbl, Regs, D0),
-
-	    %% No problem so far (the called function can handle a
-	    %% match context). Now we must make sure that we don't
-	    %% have any copies of the match context tucked away in an
-	    %% y register.
-	    RegList = btb_context_regs(Regs),
-	    case [R || {y,_}=R <- RegList] of
-		[] ->
-		    D;
-		[_|_] ->
-		    btb_error({multiple_uses,RegList})
-	    end;
-	true ->
-	    %% No match context in any x register. It could have been
-	    %% saved to an y register, so continue to scan the code following
-	    %% the call.
-	    btb_reaches_match_1(Is, Regs, D0)
-    end.
-
-btb_tail_call(Lbl, Regs, #btb{f=Ftree,must_save=MustSave0}=D) ->
-    %% Ignore any y registers here.
-    case [R || {x,_}=R <- btb_context_regs(Regs)] of
-	[] ->
-	    D;
-	[{x,_}=Reg] ->
-	    case gb_trees:lookup(Lbl, Ftree) of
-		{value,{Reg,MustSave}} ->
-		    D#btb{must_save=MustSave0 or MustSave};
-		_ when is_integer(Lbl) ->
-		    btb_error({{label,Lbl},no_suitable_bs_start_match});
-		_ ->
-		    btb_error({binary_used_in,Lbl})
-	    end;
-	[_|_] when not is_integer(Lbl) ->
-	    btb_error({binary_used_in,Lbl});
-	[_|_]=RegList ->
-	    btb_error({multiple_uses,RegList})
-    end.
-
-%% btb_follow_branches([Cond], Regs, D) -> D'
-%%  Recursively follow all the branches.
-
-btb_follow_branches([{f,Lbl}|T], Regs, D0) ->
-    D = btb_follow_branch(Lbl, Regs, D0),
-    btb_follow_branches(T, Regs, D);
-btb_follow_branches([_|T], Regs, D) ->
-    btb_follow_branches(T, Regs, D);
-btb_follow_branches([], _, D) -> D.
-
-%% btb_follow_branch(Lbl, Regs, D) -> D'
-%%  Recursively follow the branch.
-
-btb_follow_branch(0, _Regs, D) -> D;
-btb_follow_branch(Lbl, Regs, #btb{ok_br=Br0,index=Li}=D) ->
-    Key = {Lbl,Regs},
-    case gb_sets:is_member(Key, Br0) of
-	true ->
-	    %% We have already followed this branch and it was OK.
-	    D;
-	false ->
-	    %% New branch. Try it.
-	    Is = fetch_code_at(Lbl, Li),
-	    #btb{ok_br=Br,must_not_save=MustNotSave,must_save=MustSave} =
-		btb_reaches_match_1(Is, Regs, D),
-
-	    %% Since we got back, this branch is OK.
-	    D#btb{ok_br=gb_sets:insert(Key, Br),must_not_save=MustNotSave,
-		  must_save=MustSave}
-    end.
-
-btb_reaches_match_block([{set,Ds,Ss,{alloc,Live,_}}=I|Is], Regs0) ->
-    %% An allocation instruction or a GC bif. We'll kill all registers
-    %% if any copy of the context is used as the source to the BIF.
-    btb_ensure_not_used(Ss, I, Regs0),
-    Regs1 = btb_kill_not_live(Live, Regs0),
-    Regs = btb_kill(Ds, Regs1),
-    btb_reaches_match_block(Is, Regs);
-btb_reaches_match_block([{set,[Dst]=Ds,[Src],move}|Is], Regs0) ->
-    Regs1 = btb_kill(Ds, Regs0),
-    Regs = case btb_contains_context(Src, Regs1) of
-	       false -> Regs1;
-	       true -> btb_set_context(Dst, Regs1)
-	   end,
-    btb_reaches_match_block(Is, Regs);
-btb_reaches_match_block([{set,Ds,Ss,_}=I|Is], Regs0) ->
-    btb_ensure_not_used(Ss, I, Regs0),
-    Regs = btb_kill(Ds, Regs0),
-    btb_reaches_match_block(Is, Regs);
-btb_reaches_match_block([], Regs) ->
-    Regs.
-
-%% btb_are_all_killed([Register], [Instruction], D) -> true|false
-%%  Test whether all of the register are unused in the instruction stream.
-
-btb_are_all_unused(RegList, Is, #btb{index=Li}) ->
-    all(fun(R) ->
-		beam_utils:is_not_used(R, Is, Li)
-	end, RegList).
-
-%% btp_regs_from_list([Register]) -> RegisterSet.
-%%  Create a register set from a list of registers.
-
-btb_regs_from_list(L) ->
-    foldl(fun(R, Regs) ->
-		  btb_set_context(R, Regs)
-	  end, {0,0}, L).
-
-%% btb_set_context(Register, RegisterSet) -> RegisterSet'
-%%  Update RegisterSet to indicate that Register contains the matching context.
-
-btb_set_context({x,N}, {Xregs,Yregs}) ->
-    {Xregs bor (1 bsl N),Yregs};
-btb_set_context({y,N}, {Xregs,Yregs}) ->
-    {Xregs,Yregs bor (1 bsl N)}.
-
-%% btb_ensure_not_used([Register], Instruction, RegisterSet) -> ok
-%%  If any register in RegisterSet (the register(s) known to contain
-%%  the match context) is used in the list of registers, generate an error.
-
-btb_ensure_not_used(Rs, I, Regs) ->
-    case lists:any(fun(R) -> btb_contains_context(R, Regs) end, Rs) of
-	true -> btb_error({binary_used_in,I});
-	false -> ok
-    end.
-
-%% btb_kill([Register], RegisterSet) -> RegisterSet'
-%%  Kill all registers mentioned in the list of registers.
-
-btb_kill([{x,N}|Rs], {Xregs,Yregs}) ->
-    btb_kill(Rs, {Xregs band (bnot (1 bsl N)),Yregs});
-btb_kill([{y,N}|Rs], {Xregs,Yregs}) ->
-    btb_kill(Rs, {Xregs,Yregs band (bnot (1 bsl N))});
-btb_kill([{fr,_}|Rs], Regs) ->
-    btb_kill(Rs, Regs);
-btb_kill([], Regs) -> Regs.
-
-%% btb_kill_not_live(Live, RegisterSet) -> RegisterSet'
-%%  Kill all registers indicated not live by Live.
-
-btb_kill_not_live(Live, {Xregs,Yregs}) ->
-    {Xregs band ((1 bsl Live)-1),Yregs}.
-
-%% btb_kill(Regs0) -> Regs
-%%  Kill all y registers.
-
-btb_kill_yregs({Xregs,_}) -> {Xregs,0}.
-
-%% btb_are_registers_empty(RegisterSet) -> true|false
-%%  Test whether the register set is empty.
-
-btb_are_registers_empty({0,0}) -> true;
-btb_are_registers_empty({_,_}) -> false.
-
-%% btb_are_x_registers_empty(Regs) -> true|false
-%%  Test whether the x registers are empty.
-
-btb_are_x_registers_empty({0,_}) -> true;
-btb_are_x_registers_empty({_,_}) -> false.
-
-%% btb_contains_context(Register, RegisterSet) -> true|false
-%%  Test whether Register contains the context.
-
-btb_contains_context({x,N}, {Regs,_}) -> Regs band (1 bsl N) =/= 0;
-btb_contains_context({y,N}, {_,Regs}) -> Regs band (1 bsl N) =/= 0;
-btb_contains_context(_, _) -> false.
-
-%% btb_context_regs(RegisterSet) -> [Register]
-%%  Convert the register set to an explicit list of registers.
-btb_context_regs({Xregs,Yregs}) ->
-    btb_context_regs_1(Xregs, 0, x, btb_context_regs_1(Yregs, 0, y, [])).
-
-btb_context_regs_1(0, _, _, Acc) ->
-    Acc;
-btb_context_regs_1(Regs, N, Tag, Acc) when (Regs band 1) =:= 1 ->
-    btb_context_regs_1(Regs bsr 1, N+1, Tag, [{Tag,N}|Acc]);
-btb_context_regs_1(Regs, N, Tag, Acc) ->
-    btb_context_regs_1(Regs bsr 1, N+1, Tag, Acc).
-
-%% btb_index([Function]) -> GbTree({EntryLabel,{Register,MustSave}})
-%%  Build an index of functions that accept a match context instead of
-%%  a binary. MustSave is true if the function may pass the match
-%%  context to the bs_context_to_binary instruction (in which case
-%%  the current position in the binary must have saved into the
-%%  start position using "bs_save_2 Ctx start").
-
-btb_index(Fs) ->
-    btb_index_1(Fs, []).
-
-btb_index_1([{function,_,_,Entry,Is0}|Fs], Acc0) ->
-    Is = drop_to_label(Is0, Entry),
-    Acc = btb_index_2(Is, Entry, false, Acc0),
-    btb_index_1(Fs, Acc);
-btb_index_1([], Acc) -> gb_trees:from_orddict(sort(Acc)).
-
-btb_index_2([{test,bs_start_match2,{f,_},_,[Reg,_],Reg}|_],
-	    Entry, MustSave, Acc) ->
-    [{Entry,{Reg,MustSave}}|Acc];
-btb_index_2(Is0, Entry, _, Acc) ->
-    try btb_index_find_start_match(Is0) of
-	Is -> btb_index_2(Is, Entry, true, Acc)
-    catch
-	throw:none -> Acc
-    end.
-
-drop_to_label([{label,L}|Is], L) -> Is;
-drop_to_label([_|Is], L) -> drop_to_label(Is, L).
-
-btb_index_find_start_match([{test,_,{f,F},_},{bs_context_to_binary,_}|Is]) ->
-    btb_index_find_label(Is, F);
-btb_index_find_start_match(_) ->
-    throw(none).
-
-btb_index_find_label([{label,L}|Is], L) -> Is;
-btb_index_find_label([_|Is], L) -> btb_index_find_label(Is, L).
-
-btb_error(Error) ->
-    throw({error,Error}).
-
-fetch_code_at(Lbl, Li) ->
-    case beam_utils:code_at(Lbl, Li) of
-	Is when is_list(Is) -> Is
-    end.
-
-%%%
-%%% Compilation information warnings.
-%%%
-
-btb_comment_opt({field_flags,[{anno,A}|_]}) ->
-    {'%',{bin_opt,A}};
-btb_comment_opt(_) ->
-    {'%',{bin_opt,[]}}.
-
-btb_comment_no_opt(Reason, {field_flags,[{anno,A}|_]}) ->
-    {'%',{no_bin_opt,Reason,A}};
-btb_comment_no_opt(Reason, _) ->
-    {'%',{no_bin_opt,Reason,[]}}.
-
-collect_warnings(Fs) ->
-    D = warning_index_functions(Fs),
-    foldl(fun(F, A) -> collect_warnings_fun(F, D, A) end, [], Fs).
-
-collect_warnings_fun({function,_,_,_,Is}, D, A) ->
-    collect_warnings_instr(Is, D, A).
-
-collect_warnings_instr([{'%',{bin_opt,Where}}|Is], D, Acc0) ->
-    Acc = add_warning(bin_opt, Where, Acc0),
-    collect_warnings_instr(Is, D, Acc);
-collect_warnings_instr([{'%',{no_bin_opt,Reason0,Where}}|Is], D, Acc0) ->
-    Reason = warning_translate_label(Reason0, D),
-    Acc = add_warning({no_bin_opt,Reason}, Where, Acc0),
-    collect_warnings_instr(Is, D, Acc);
-collect_warnings_instr([_|Is], D, Acc) ->
-    collect_warnings_instr(Is, D, Acc);
-collect_warnings_instr([], _, Acc) -> Acc.
-
-add_warning(Term, Anno, Ws) ->
-    Line = get_line(Anno),
-    File = get_file(Anno),
-    [{File,[{Line,?MODULE,Term}]}|Ws].
-
-warning_translate_label(Term, D) when is_tuple(Term) ->
-    case element(1, Term) of
-	{label,F} ->
-	    FA = gb_trees:get(F, D),
-	    setelement(1, Term, FA);
-	_ -> Term
-    end;
-warning_translate_label(Term, _) -> Term.
-
-get_line([Line|_]) when is_integer(Line) -> Line;
-get_line([_|T]) -> get_line(T);
-get_line([]) -> none.
-    
-get_file([{file,File}|_]) -> File;
-get_file([_|T]) -> get_file(T);
-get_file([]) -> "no_file". % should not happen
-
-warning_index_functions(Fs) ->
-    D = [{Entry,{F,A}} || {function,F,A,Entry,_} <- Fs],
-    gb_trees:from_orddict(sort(D)).
-
-format_error_1({binary_used_in,{extfunc,M,F,A}}) ->
-    [io_lib:format("sub binary used by ~p:~p/~p", [M,F,A])|
-     case {M,F,A} of
-	 {erlang,split_binary,2} ->
-	     "; SUGGEST using binary matching instead of split_binary/2";
-	 _ ->
-	     ""
-     end];
-format_error_1({binary_used_in,_}) ->
-    "sub binary is used or returned";
-format_error_1({multiple_uses,_}) ->
-    "sub binary is matched or used in more than one place";
-format_error_1(unsuitable_bs_start_match) ->
-    "the binary matching instruction that follows in the same function "
-	"have problems that prevent delayed sub binary optimization "
-	"(probably indicated by INFO warnings)";
-format_error_1({{F,A},no_suitable_bs_start_match}) ->
-    io_lib:format("called function ~p/~p does not begin with a suitable "
-		  "binary matching instruction", [F,A]);
-format_error_1(must_and_must_not_save) ->
-    "different control paths use different positions in the binary";
-format_error_1({_,I,not_handled}) ->
-    case I of
-	{'catch',_,_} ->
-	    "the compiler currently does not attempt the delayed sub binary "
-		"optimization when catch is used";
-	{'try',_,_} ->
-	    "the compiler currently does not attempt the delayed sub binary "
-		"optimization when try/catch is used";
-	_ ->
-	    io_lib:format("compiler limitation: instruction ~p prevents "
-			  "delayed sub binary optimization", [I])
-    end;
-format_error_1(Term) ->
-    io_lib:format("~w", [Term]).
diff --git a/lib/compiler/src/beam_clean.erl b/lib/compiler/src/beam_clean.erl
index 207f1c4deb..7299654476 100644
--- a/lib/compiler/src/beam_clean.erl
+++ b/lib/compiler/src/beam_clean.erl
@@ -22,34 +22,21 @@
 -module(beam_clean).
 
 -export([module/2]).
--export([bs_clean_saves/1]).
 -export([clean_labels/1]).
--import(lists, [foldl/3,reverse/1]).
 
 -spec module(beam_utils:module_code(), [compile:option()]) ->
                     {'ok',beam_utils:module_code()}.
 
 module({Mod,Exp,Attr,Fs0,_}, Opts) ->
     Order = [Lbl || {function,_,_,Lbl,_} <- Fs0],
-    All = foldl(fun({function,_,_,Lbl,_}=Func,D) -> dict:store(Lbl, Func, D) end,
-		dict:new(), Fs0),
+    All = maps:from_list([{Lbl,Func} || {function,_,_,Lbl,_}=Func <- Fs0]),
     WorkList = rootset(Fs0, Exp, Attr),
-    Used = find_all_used(WorkList, All, sets:from_list(WorkList)),
+    Used = find_all_used(WorkList, All, cerl_sets:from_list(WorkList)),
     Fs1 = remove_unused(Order, Used, All),
     {Fs2,Lc} = clean_labels(Fs1),
-    Fs3 = bs_fix(Fs2),
-    Fs = maybe_remove_lines(Fs3, Opts),
+    Fs = maybe_remove_lines(Fs2, Opts),
     {ok,{Mod,Exp,Attr,Fs,Lc}}.
 
-%% Remove all bs_save2/2 instructions not referenced by a bs_restore2/2.
-
--spec bs_clean_saves([beam_utils:instruction()]) ->
-                            [beam_utils:instruction()].
-
-bs_clean_saves(Is) ->
-    Needed = bs_restores(Is, []),
-    bs_clean_saves_1(Is, gb_sets:from_list(Needed), []).
-
 %% Determine the rootset, i.e. exported functions and
 %% the on_load function (if any).
 
@@ -66,16 +53,16 @@ rootset(Fs, Root0, Attr) ->
 %% Remove the unused functions.
 
 remove_unused([F|Fs], Used, All) ->
-    case sets:is_element(F, Used) of
+    case cerl_sets:is_element(F, Used) of
 	false -> remove_unused(Fs, Used, All);
-	true -> [dict:fetch(F, All)|remove_unused(Fs, Used, All)]
+	true -> [map_get(F, All)|remove_unused(Fs, Used, All)]
     end;
 remove_unused([], _, _) -> [].
-	    
+
 %% Find all used functions.
 
 find_all_used([F|Fs0], All, Used0) ->
-    {function,_,_,_,Code} = dict:fetch(F, All),
+    {function,_,_,_,Code} = map_get(F, All),
     {Fs,Used} = update_work_list(Code, {Fs0,Used0}),
     find_all_used(Fs, All, Used);
 find_all_used([], _All, Used) -> Used.
@@ -89,20 +76,16 @@ update_work_list([_|Is], Sets) ->
 update_work_list([], Sets) -> Sets.
 
 add_to_work_list(F, {Fs,Used}=Sets) ->
-    case sets:is_element(F, Used) of
+    case cerl_sets:is_element(F, Used) of
 	true -> Sets;
-	false -> {[F|Fs],sets:add_element(F, Used)}
+	false -> {[F|Fs],cerl_sets:add_element(F, Used)}
     end.
 
 
 %%%
 %%% Coalesce adjacent labels. Renumber all labels to eliminate gaps.
-%%% This cleanup will slightly reduce file size and slightly speed up loading.
-%%%
-%%% We also expand is_record/3 to a sequence of instructions. It is done
-%%% here merely because this module will always be called even if optimization
-%%% is turned off. We don't want to do the expansion in beam_asm because we
-%%% want to see the expanded code in a .S file.
+%%% This cleanup will slightly reduce file size and slightly speed up
+%%% loading.
 %%%
 
 -type label() :: beam_asm:label().
@@ -127,45 +110,6 @@ function_renumber([{function,Name,Arity,_Entry,Asm0}|Fs], St0, Acc) ->
     function_renumber(Fs, St, [{function,Name,Arity,St#st.entry,Asm}|Acc]);
 function_renumber([], St, Acc) -> {Acc,St}.
 
-renumber_labels([{bif,is_record,{f,_},
-		  [Term,{atom,Tag}=TagAtom,{integer,Arity}],Dst}|Is0], Acc, St) ->
-    ContLabel = 900000000+2*St#st.lc,
-    FailLabel = ContLabel+1,
-    Fail = {f,FailLabel},
-    Tmp = Dst,
-    Is = case is_record_tuple(Term, Tag, Arity) of
-	     yes ->
-		 [{move,{atom,true},Dst}|Is0];
-	     no ->
-		 [{move,{atom,false},Dst}|Is0];
-	     maybe ->
-		 [{test,is_tuple,Fail,[Term]},
-		  {test,test_arity,Fail,[Term,Arity]},
-		  {get_tuple_element,Term,0,Tmp},
-		  {test,is_eq_exact,Fail,[Tmp,TagAtom]},
-		  {move,{atom,true},Dst},
-		  {jump,{f,ContLabel}},
-		  {label,FailLabel},
-		  {move,{atom,false},Dst},
-		  {jump,{f,ContLabel}},	%Improves optimization by beam_dead.
-		  {label,ContLabel}|Is0]
-	 end,
-    renumber_labels(Is, Acc, St);
-renumber_labels([{test,is_record,{f,_}=Fail,
-		  [Term,{atom,Tag}=TagAtom,{integer,Arity}]}|Is0], Acc, St) ->
-    Tmp = {x,1022},
-    Is = case is_record_tuple(Term, Tag, Arity) of
-	     yes ->
-		 Is0;
-	     no ->
-		 [{jump,Fail}|Is0];
-	     maybe ->
-		 [{test,is_tuple,Fail,[Term]},
-		  {test,test_arity,Fail,[Term,Arity]},
-		  {get_tuple_element,Term,0,Tmp},
-		  {test,is_eq_exact,Fail,[Tmp,TagAtom]}|Is0]
-	 end,
-    renumber_labels(Is, Acc, St);
 renumber_labels([{label,Old}|Is], [{label,New}|_]=Acc, #st{lmap=D0}=St) ->
     D = [{Old,New}|D0],
     renumber_labels(Is, Acc, St#st{lmap=D});
@@ -179,12 +123,6 @@ renumber_labels([I|Is], Acc, St0) ->
     renumber_labels(Is, [I|Acc], St0);
 renumber_labels([], Acc, St) -> {Acc,St}.
 
-is_record_tuple({x,_}, _, _) -> maybe;
-is_record_tuple({y,_}, _, _) -> maybe;
-is_record_tuple({literal,Tuple}, Tag, Arity)
-  when element(1, Tuple) =:= Tag, tuple_size(Tuple) =:= Arity -> yes;
-is_record_tuple(_, _, _) -> no.
-
 function_replace([{function,Name,Arity,Entry,Asm0}|Fs], Dict, Acc) ->
     Asm = try
               Fb = fun(Old) -> throw({error,{undefined_label,Old}}) end,
@@ -199,100 +137,6 @@ function_replace([{function,Name,Arity,Entry,Asm0}|Fs], Dict, Acc) ->
 function_replace([], _, Acc) -> Acc.
 
 %%%
-%%% Final fixup of bs_start_match2/5,bs_save2/bs_restore2 instructions for
-%%% new bit syntax matching (introduced in R11B).
-%%%
-%%% Pass 1: Scan the code, looking for bs_restore2/2 instructions.
-%%%
-%%% Pass 2: Update bs_save2/2 and bs_restore/2 instructions. Remove
-%%% any bs_save2/2 instruction whose save position are never referenced
-%%% by any bs_restore2/2 instruction.
-%%%
-%%% Note this module can be invoked several times, so we must be careful
-%%% not to touch instructions that have already been fixed up.
-%%%
-
-bs_fix(Fs) ->
-    bs_fix(Fs, []).
-
-bs_fix([{function,Name,Arity,Entry,Asm0}|Fs], Acc) ->
-    Asm = bs_function(Asm0),
-    bs_fix(Fs, [{function,Name,Arity,Entry,Asm}|Acc]);
-bs_fix([], Acc) -> reverse(Acc).
-
-bs_function(Is) ->
-    Dict0 = bs_restores(Is, []),
-    S0 = sofs:relation(Dict0, [{context,save_point}]),
-    S1 = sofs:relation_to_family(S0),
-    S = sofs:to_external(S1),
-    Dict = make_save_point_dict(S, []),
-    bs_replace(Is, Dict, []).
-
-make_save_point_dict([{Ctx,Pts}|T], Acc0) ->
-    Acc = make_save_point_dict_1(Pts, Ctx, 0, Acc0),
-    make_save_point_dict(T, Acc);
-make_save_point_dict([], Acc) ->
-    gb_trees:from_orddict(ordsets:from_list(Acc)).
-
-make_save_point_dict_1([H|T], Ctx, I, Acc) ->
-    make_save_point_dict_1(T, Ctx, I+1, [{{Ctx,H},I}|Acc]);
-make_save_point_dict_1([], Ctx, I, Acc) ->
-    [{Ctx,I}|Acc].
-
-%% Pass 1.
-bs_restores([{bs_restore2,_,{Same,Same}}|Is], Dict) ->
-    %% This save point is special. No explicit save is needed.
-    bs_restores(Is, Dict);
-bs_restores([{bs_restore2,_,{atom,start}}|Is], Dict) ->
-    %% This instruction can occur if "compilation"
-    %% started from a .S file.
-    bs_restores(Is, Dict);
-bs_restores([{bs_restore2,_,{_,_}=SavePoint}|Is], Dict) ->
-    bs_restores(Is, [SavePoint|Dict]);
-bs_restores([_|Is], Dict) ->
-    bs_restores(Is, Dict);
-bs_restores([], Dict) -> Dict.
-    
-%% Pass 2.
-bs_replace([{test,bs_start_match2,F,Live,[Src,{context,Ctx}],CtxR}|T], Dict, Acc) ->
-    Slots = case gb_trees:lookup(Ctx, Dict) of
-		{value,Slots0} -> Slots0;
-		none -> 0
-	    end,
-    I = {test,bs_start_match2,F,Live,[Src,Slots],CtxR},
-    bs_replace(T, Dict, [I|Acc]);
-bs_replace([{bs_save2,CtxR,{_,_}=SavePoint}|T], Dict, Acc) ->
-    case gb_trees:lookup(SavePoint, Dict) of
-	{value,N} ->
-	    bs_replace(T, Dict, [{bs_save2,CtxR,N}|Acc]);
-	none ->
-	    bs_replace(T, Dict, Acc)
-    end;
-bs_replace([{bs_restore2,_,{atom,start}}=I|T], Dict, Acc) ->
-    %% This instruction can occur if "compilation"
-    %% started from a .S file.
-    bs_replace(T, Dict, [I|Acc]);    
-bs_replace([{bs_restore2,CtxR,{Same,Same}}|T], Dict, Acc) ->
-    %% This save point refers to the point in the binary where the match
-    %% started. It has a special name.
-    bs_replace(T, Dict, [{bs_restore2,CtxR,{atom,start}}|Acc]);
-bs_replace([{bs_restore2,CtxR,{_,_}=SavePoint}|T], Dict, Acc) ->
-    N = gb_trees:get(SavePoint, Dict),
-    bs_replace(T, Dict, [{bs_restore2,CtxR,N}|Acc]);
-bs_replace([I|Is], Dict, Acc) ->
-    bs_replace(Is, Dict, [I|Acc]);
-bs_replace([], _, Acc) -> reverse(Acc).
-
-bs_clean_saves_1([{bs_save2,_,{_,_}=SavePoint}=I|Is], Needed, Acc) ->
-    case gb_sets:is_member(SavePoint, Needed) of
-	false -> bs_clean_saves_1(Is, Needed, Acc);
-	true -> bs_clean_saves_1(Is, Needed, [I|Acc])
-    end;
-bs_clean_saves_1([I|Is], Needed, Acc) ->
-    bs_clean_saves_1(Is, Needed, [I|Acc]);
-bs_clean_saves_1([], _, Acc) -> reverse(Acc).
-
-%%%
 %%% Remove line instructions if requested.
 %%%
 
diff --git a/lib/compiler/src/beam_dead.erl b/lib/compiler/src/beam_dead.erl
deleted file mode 100644
index efad082152..0000000000
--- a/lib/compiler/src/beam_dead.erl
+++ /dev/null
@@ -1,971 +0,0 @@
-%%
-%% %CopyrightBegin%
-%%
-%% Copyright Ericsson AB 2002-2018. All Rights Reserved.
-%%
-%% Licensed under the Apache License, Version 2.0 (the "License");
-%% you may not use this file except in compliance with the License.
-%% You may obtain a copy of the License at
-%%
-%%     http://www.apache.org/licenses/LICENSE-2.0
-%%
-%% Unless required by applicable law or agreed to in writing, software
-%% distributed under the License is distributed on an "AS IS" BASIS,
-%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-%% See the License for the specific language governing permissions and
-%% limitations under the License.
-%%
-%% %CopyrightEnd%
-%%
-
--module(beam_dead).
-
--export([module/2]).
-
-%%% Dead code is code that is executed but has no effect. This
-%%% optimization pass either removes dead code or jumps around it,
-%%% potentially making it unreachable and a target for the
-%%% the beam_jump pass.
-
--import(lists, [mapfoldl/3,reverse/1]).
-
-
--spec module(beam_utils:module_code(), [compile:option()]) ->
-                    {'ok',beam_utils:module_code()}.
-
-module({Mod,Exp,Attr,Fs0,_}, _Opts) ->
-    {Fs1,Lc1} = beam_clean:clean_labels(Fs0),
-    {Fs,Lc} = mapfoldl(fun function/2, Lc1, Fs1),
-    %%{Fs,Lc} = {Fs1,Lc1},
-    {ok,{Mod,Exp,Attr,Fs,Lc}}.
-
-function({function,Name,Arity,CLabel,Is0}, Lc0) ->
-    try
-	Is1 = beam_jump:remove_unused_labels(Is0),
-
-	%% Initialize label information with the code
-	%% for the func_info label. Without it, a register
-	%% may seem to be live when it is not.
-	[{label,L}|FiIs] = Is1,
-	D0 = beam_utils:empty_label_index(),
-	D = beam_utils:index_label(L, FiIs, D0),
-
-	%% Optimize away dead code.
-	{Is2,Lc} = forward(Is1, Lc0),
-	Is3 = backward(Is2, D),
-	Is = move_move_into_block(Is3, []),
-	{{function,Name,Arity,CLabel,Is},Lc}
-    catch
-        Class:Error:Stack ->
-	    io:fwrite("Function: ~w/~w\n", [Name,Arity]),
-	    erlang:raise(Class, Error, Stack)
-    end.
-
-%% 'move' instructions outside of blocks may thwart the jump optimizer.
-%% Move them back into the block.
-
-move_move_into_block([{block,Bl0},{move,S,D}|Is], Acc) ->
-    Bl = Bl0 ++ [{set,[D],[S],move}],
-    move_move_into_block([{block,Bl}|Is], Acc);
-move_move_into_block([{move,S,D}|Is], Acc) ->
-    Bl = [{set,[D],[S],move}],
-    move_move_into_block([{block,Bl}|Is], Acc);
-move_move_into_block([I|Is], Acc) ->
-    move_move_into_block(Is, [I|Acc]);
-move_move_into_block([], Acc) -> reverse(Acc).
-
-%%%
-%%% Scan instructions in execution order and remove redundant 'move'
-%%% instructions. 'move' instructions are redundant if we know that
-%%% the register already contains the value being assigned, as in the
-%%% following code:
-%%%
-%%%           test is_eq_exact SomeLabel Src Dst
-%%%           move Src Dst
-%%%
-%%% or in:
-%%%
-%%%           test is_nil SomeLabel Dst
-%%%           move nil Dst
-%%%
-%%% or in:
-%%%
-%%%           select_val Register FailLabel [... Literal => L1...]
-%%%                      .
-%%%                      .
-%%%                      .
-%%%   L1:     move Literal Register
-%%%
-%%% Also add extra labels to help the second backward pass.
-%%%
-
-forward(Is, Lc) ->
-    forward(Is, #{}, Lc, []).
-
-forward([{move,_,_}=Move|[{label,L}|_]=Is], D, Lc, Acc) ->
-    %% move/2 followed by jump/1 is optimized by backward/3.
-    forward([Move,{jump,{f,L}}|Is], D, Lc, Acc);
-forward([{bif,_,_,_,_}=Bif|[{label,L}|_]=Is], D, Lc, Acc) ->
-    %% bif/4 followed by jump/1 is optimized by backward/3.
-    forward([Bif,{jump,{f,L}}|Is], D, Lc, Acc);
-forward([{block,[]}|Is], D, Lc, Acc) ->
-    %% Empty blocks can prevent optimizations.
-    forward(Is, D, Lc, Acc);
-forward([{select,select_val,Reg,_,List}=I|Is], D0, Lc, Acc) ->
-    D = update_value_dict(List, Reg, D0),
-    forward(Is, D, Lc, [I|Acc]);
-forward([{label,Lbl}=LblI,{block,[{set,[Dst],[Lit],move}|BlkIs]}=Blk|Is], D, Lc, Acc) ->
-    %% Assumption: The target labels in a select_val/3 instruction
-    %% cannot be reached in any other way than through the select_val/3
-    %% instruction (i.e. there can be no fallthrough to such label and
-    %% it cannot be referenced by, for example, a jump/1 instruction).
-    Key = {Lbl,Dst},
-    Block = case D of
-                #{Key := Lit} -> {block,BlkIs}; %Safe to remove move instruction.
-                _ -> Blk                        %Must keep move instruction.
-            end,
-    forward([Block|Is], D, Lc, [LblI|Acc]);
-forward([{label,Lbl}=LblI|[{move,Lit,Dst}|Is1]=Is0], D, Lc, Acc) ->
-    %% Assumption: The target labels in a select_val/3 instruction
-    %% cannot be reached in any other way than through the select_val/3
-    %% instruction (i.e. there can be no fallthrough to such label and
-    %% it cannot be referenced by, for example, a jump/1 instruction).
-    Is = case maps:find({Lbl,Dst}, D) of
-	     {ok,Lit} -> Is1;     %Safe to remove move instruction.
-	     _ -> Is0		  %Keep move instruction.
-	 end,
-    forward(Is, D, Lc, [LblI|Acc]);
-forward([{test,is_eq_exact,_,[Same,Same]}|Is], D, Lc, Acc) ->
-    forward(Is, D, Lc, Acc);
-forward([{test,is_eq_exact,_,[Dst,Src]}=I,
-	 {block,[{set,[Dst],[Src],move}|Bl]}|Is], D, Lc, Acc) ->
-    forward([I,{block,Bl}|Is], D, Lc, Acc);
-forward([{test,is_nil,_,[Dst]}=I,
-	 {block,[{set,[Dst],[nil],move}|Bl]}|Is], D, Lc, Acc) ->
-    forward([I,{block,Bl}|Is], D, Lc, Acc);
-forward([{test,is_eq_exact,_,[Dst,Src]}=I,{move,Src,Dst}|Is], D, Lc, Acc) ->
-    forward([I|Is], D, Lc, Acc);
-forward([{test,is_nil,_,[Dst]}=I,{move,nil,Dst}|Is], D, Lc, Acc) ->
-    forward([I|Is], D, Lc, Acc);
-forward([{test,_,_,_}=I|Is]=Is0, D, Lc, Acc) ->
-    %% Help the second, backward pass to by inserting labels after
-    %% relational operators so that they can be skipped if they are
-    %% known to be true.
-    case useful_to_insert_label(Is0) of
-	false -> forward(Is, D, Lc, [I|Acc]);
-	true -> forward(Is, D, Lc+1, [{label,Lc},I|Acc])
-    end;
-forward([I|Is], D, Lc, Acc) ->
-    forward(Is, D, Lc, [I|Acc]);
-forward([], _, Lc, Acc) -> {Acc,Lc}.
-
-update_value_dict([Lit,{f,Lbl}|T], Reg, D0) ->
-    Key = {Lbl,Reg},
-    D = case D0 of
-            #{Key := inconsistent} -> D0;
-            #{Key := _} -> D0#{Key := inconsistent};
-            _ -> D0#{Key => Lit}
-        end,
-    update_value_dict(T, Reg, D);
-update_value_dict([], _, D) -> D.
-
-useful_to_insert_label([_,{label,_}|_]) ->
-    false;
-useful_to_insert_label([{test,Op,_,_}|_]) ->
-    case Op of
-	is_lt -> true;
-	is_ge -> true;
-	is_eq_exact -> true;
-	is_ne_exact -> true;
-	_ -> false
-    end.
-
-%%%
-%%% Scan instructions in reverse execution order and try to
-%%% shortcut branch instructions.
-%%%
-%%% For example, in this code:
-%%%
-%%%             move Literal Register
-%%%             jump L1
-%%%                .
-%%%                .
-%%%                .
-%%%     L1:     test is_{integer,atom} FailLabel Register
-%%%             select_val {x,0} FailLabel [... Literal => L2...]
-%%%                .
-%%%                .
-%%%                .
-%%%     L2:        ...
-%%%
-%%% the 'selectval' instruction will always transfer control to L2,
-%%% so we can just as well jump to L2 directly by rewriting the
-%%% first part of the sequence like this:
-%%%
-%%%           move Literal Register
-%%%           jump L2
-%%%
-%%% If register Register is killed at label L2, we can remove the
-%%% 'move' instruction, leaving just the 'jump' instruction:
-%%%
-%%%           jump L2
-%%%
-%%% These transformations may leave parts of the code unreachable.
-%%% The beam_jump pass will remove the unreachable code.
-
-backward(Is, D) ->
-    backward(Is, D, []).
-
-backward([{test,is_eq_exact,Fail,[Dst,{integer,Arity}]}=I|
-	  [{bif,tuple_size,Fail,[Reg],Dst}|Is]=Is0], D, Acc) ->
-    %% Provided that Dst is killed following this sequence,
-    %% we can rewrite the instructions like this:
-    %%
-    %% bif tuple_size Fail Reg Dst  ==>  is_tuple Fail Reg
-    %% is_eq_exact Fail Dst Integer    	 test_arity Fail Reg Integer
-    %%
-    %% (still two instructions, but they they will be combined to
-    %% one by the loader).
-    case beam_utils:is_killed(Dst, Acc, D) andalso (Arity bsr 32) =:= 0 of
-	false ->
-	    %% Not safe because the register Dst is not killed
-	    %% (probably cannot not happen in practice) or the arity
-	    %% does not fit in 32 bits (the loader will fail to load
-	    %% the module). We must move the first instruction to the
-	    %% accumulator to avoid an infinite loop.
-	    backward(Is0, D, [I|Acc]);
-	true ->
-	    %% Safe.
-	    backward([{test,test_arity,Fail,[Reg,Arity]},
-		      {test,is_tuple,Fail,[Reg]}|Is], D, Acc)
-    end;
-backward([{label,Lbl}=L|Is], D, Acc) ->
-    backward(Is, beam_utils:index_label(Lbl, Acc, D), [L|Acc]);
-backward([{select,select_val,Reg,{f,Fail0},List0}|Is], D, Acc) ->
-    List1 = shortcut_select_list(List0, Reg, D, []),
-    Fail1 = shortcut_label(Fail0, D),
-    Fail = shortcut_bs_test(Fail1, Is, D),
-    List = prune_redundant(List1, Fail),
-    case List of
-	[] ->
-	    Jump = {jump,{f,Fail}},
-	    backward([Jump|Is], D, Acc);
-	[V,F] ->
-	    Test = {test,is_eq_exact,{f,Fail},[Reg,V]},
-	    Jump = {jump,F},
-	    backward([Jump,Test|Is], D, Acc);
-	[{atom,B1},F,{atom,B2},F] when B1 =:= not B2 ->
-	    Test = {test,is_boolean,{f,Fail},[Reg]},
-	    Jump = {jump,F},
-	    backward([Jump,Test|Is], D, Acc);
-	[_|_] ->
-	    Sel = {select,select_val,Reg,{f,Fail},List},
-	    backward(Is, D, [Sel|Acc])
-    end;
-backward([{jump,{f,To0}},{move,Src,Reg}=Move|Is], D, Acc) ->
-    To = shortcut_select_label(To0, Reg, Src, D),
-    Jump = {jump,{f,To}},
-    case is_killed_at(Reg, To, D) of
-	false -> backward([Move|Is], D, [Jump|Acc]);
-	true -> backward([Jump|Is], D, Acc)
-    end;
-backward([{jump,{f,To}}=J|[{bif,Op,{f,BifFail},Ops,Reg}|Is]=Is0], D, Acc) ->
-    try replace_comp_op(To, Reg, Op, Ops, D) of
-	{Test,Jump} ->
-            backward([Jump,Test|Is], D, Acc)
-    catch
-	throw:not_possible ->
-	    case To =:= BifFail of
-		true ->
-		    %% The bif instruction is redundant. See the comment
-		    %% in the next clause for why there is no need to
-		    %% test for liveness of Reg at label To.
-		    backward([J|Is], D, Acc);
-		false ->
-		    backward(Is0, D, [J|Acc])
-	    end
-    end;
-backward([{jump,{f,To}}=J|[{gc_bif,_,{f,To},_,_,_Dst}|Is]], D, Acc) ->
-    %% The gc_bif instruction is redundant, since either the gc_bif
-    %% instruction itself or the jump instruction will transfer control
-    %% to label To. Note that a gc_bif instruction does not assign its
-    %% destination register if the failure branch is taken; therefore,
-    %% the code at label To is not allowed to assume that the destination
-    %% register is initialized, and it is therefore no need to test
-    %% for liveness of the destination register at label To.
-    backward([J|Is], D, Acc);
-backward([{test,bs_start_match2,F,Live,[Src,_]=Args,Ctxt}|Is], D, Acc0) ->
-    {f,To0} = F,
-    case test_bs_literal(F, Ctxt, D, Acc0) of
-        {none,Acc} ->
-            %% Ctxt killed immediately after bs_start_match2.
-            To = shortcut_bs_context_to_binary(To0, Src, D),
-            I = {test,is_bitstr,{f,To},[Src]},
-            backward(Is, D, [I|Acc]);
-        {Literal,Acc} ->
-            %% Ctxt killed after matching a literal.
-            To = shortcut_bs_context_to_binary(To0, Src, D),
-            Eq = {test,is_eq_exact,{f,To},[Src,{literal,Literal}]},
-            backward(Is, D, [Eq|Acc]);
-        not_killed ->
-            %% Ctxt not killed. Not much to do.
-            To = shortcut_bs_start_match(To0, Src, D),
-            I = {test,bs_start_match2,{f,To},Live,Args,Ctxt},
-            backward(Is, D, [I|Acc0])
-    end;
-backward([{test,Op,{f,To0},Ops0}|Is], D, Acc) ->
-    To1 = shortcut_bs_test(To0, Is, D),
-    To2 = shortcut_label(To1, D),
-    To3 = shortcut_rel_op(To2, Op, Ops0, D),
-
-    %% Try to shortcut a repeated test:
-    %%
-    %%        test Op {f,Fail1} Operands	test Op {f,Fail2} Operands
-    %%        . . .		          ==>   ...
-    %% Fail1: test Op {f,Fail2} Operands        Fail1: test Op {f,Fail2} Operands
-    %%
-    To = case beam_utils:code_at(To3, D) of
-	     [{test,Op,{f,To4},Ops}|_] ->
-		 case equal_ops(Ops0, Ops) of
-		     true -> To4;
-		     false -> To3
-		 end;
-	     _Code ->
-		 To3
-	 end,
-    I = case Op of
-	    is_eq_exact -> combine_eqs(To, Ops0, D, Acc);
-	    _ -> {test,Op,{f,To},Ops0}
-	end,
-    case {I,Acc} of
-	{{test,is_atom,Fail,Ops0},[{test,is_boolean,Fail,Ops0}|_]} ->
-	    %% An is_atom test before an is_boolean test (with the
-	    %% same failure label) is redundant.
-	    backward(Is, D, Acc);
-	{{test,is_atom,Fail,[R]},
-	 [{test,is_eq_exact,Fail,[R,{atom,_}]}|_]} ->
-	    %% An is_atom test before a comparison with an atom (with
-	    %% the same failure label) is redundant.
-	    backward(Is, D, Acc);
-	{{test,is_integer,Fail,[R]},
-	 [{test,is_eq_exact,Fail,[R,{integer,_}]}|_]} ->
-	    %% An is_integer test before a comparison with an integer
-	    %% (with the same failure label) is redundant.
-	    backward(Is, D, Acc);
-	{{test,_,_,_},_} ->
-	    %% Still a test instruction. Done.
-	    backward(Is, D, [I|Acc]);
-	{_,_} ->
-	    %% Rewritten to a select_val. Rescan.
-	    backward([I|Is], D, Acc)
-    end;
-backward([{test,Op,{f,To0},Live,Ops0,Dst}|Is], D, Acc) ->
-    To1 = shortcut_bs_test(To0, Is, D),
-    To2 = shortcut_label(To1, D),
-    %% Try to shortcut a repeated test:
-    %%
-    %%        test Op {f,Fail1} _ Ops _ 	test Op {f,Fail2} _ Ops _
-    %%        . . .		          ==>   ...
-    %% Fail1: test Op {f,Fail2} _ Ops _   Fail1: test Op {f,Fail2} _ Ops _
-    %%
-    To = case beam_utils:code_at(To2, D) of
-	     [{test,Op,{f,To3},_,Ops,_}|_] ->
-		 case equal_ops(Ops0, Ops) of
-		     true -> To3;
-		     false -> To2
-		 end;
-	     _Code ->
-		 To2
-	 end,
-    I = {test,Op,{f,To},Live,Ops0,Dst},
-    backward(Is, D, [I|Acc]);
-backward([{kill,_}=I|Is], D, [{line,_},Exit|_]=Acc) ->
-    case beam_jump:is_exit_instruction(Exit) of
-	false -> backward(Is, D, [I|Acc]);
-	true -> backward(Is, D, Acc)
-    end;
-backward([{bif,'or',{f,To0},[Dst,{atom,false}],Dst}=I|Is], D,
-	 [{test,is_eq_exact,{f,To},[Dst,{atom,true}]}|_]=Acc) ->
-    case shortcut_label(To0, D) of
-	To ->
-	    backward(Is, D, Acc);
-	_ ->
-	    backward(Is, D, [I|Acc])
-    end;
-backward([{bif,map_get,{f,FF},[Key,Map],_}=I0,
-          {test,has_map_fields,{f,FT}=F,[Map|Keys0]}=I1|Is], D, Acc) when FF =/= 0 ->
-    case shortcut_label(FF, D) of
-        FT ->
-            case lists:delete(Key, Keys0) of
-                [] ->
-                    backward([I0|Is], D, Acc);
-                Keys ->
-                    Test = {test,has_map_fields,F,[Map|Keys]},
-                    backward([Test|Is], D, [I0|Acc])
-            end;
-        _ ->
-            backward([I1|Is], D, [I0|Acc])
-    end;
-backward([{bif,map_get,{f,FF},[_,Map],_}=I0,
-          {test,is_map,{f,FT},[Map]}=I1|Is], D, Acc) when FF =/= 0 ->
-    case shortcut_label(FF, D) of
-        FT -> backward([I0|Is], D, Acc);
-        _ -> backward([I1|Is], D, [I0|Acc])
-    end;
-backward([I|Is], D, Acc) ->
-    backward(Is, D, [I|Acc]);
-backward([], _D, Acc) -> Acc.
-
-equal_ops([{field_flags,FlA0}|T0], [{field_flags,FlB0}|T1]) ->
-    FlA = lists:keydelete(anno, 1, FlA0),
-    FlB = lists:keydelete(anno, 1, FlB0),
-    FlA =:= FlB andalso equal_ops(T0, T1);
-equal_ops([Op|T0], [Op|T1]) ->
-    equal_ops(T0, T1);
-equal_ops([], []) -> true;
-equal_ops(_, _) -> false.
-    
-shortcut_select_list([Lit,{f,To0}|T], Reg, D, Acc) ->
-    To = shortcut_select_label(To0, Reg, Lit, D),
-    shortcut_select_list(T, Reg, D, [{f,To},Lit|Acc]);
-shortcut_select_list([], _, _, Acc) -> reverse(Acc).
-
-shortcut_label(0, _) ->
-    0;
-shortcut_label(To0, D) ->
-    case beam_utils:code_at(To0, D) of
-  	[{jump,{f,To}}|_] -> shortcut_label(To, D);
-	_ -> To0
-    end.
-
-shortcut_select_label(To, Reg, Lit, D) ->
-    shortcut_rel_op(To, is_ne_exact, [Reg,Lit], D).
-
-prune_redundant([_,{f,Fail}|T], Fail) ->
-    prune_redundant(T, Fail);
-prune_redundant([V,F|T], Fail) ->
-    [V,F|prune_redundant(T, Fail)];
-prune_redundant([], _) -> [].
-
-%% Replace a comparison operator with a test instruction and a jump.
-%% For example, if we have this code:
-%%
-%%     	  bif '=:=' Fail Src1 Src2 {x,0}
-%%    	  jump L1
-%%           .
-%%           .
-%%           .
-%%   L1:  select_val {x,0} FailLabel [... true => L2..., ...false => L3...]
-%%
-%% the first two instructions can be replaced with
-%%
-%%        test is_eq_exact L3 Src1 Src2
-%%	  jump L2
-%%
-%% provided that {x,0} is killed at both L2 and L3.
-
-replace_comp_op(To, Reg, Op, Ops, D) ->
-    False = comp_op_find_shortcut(To, Reg, {atom,false}, D),
-    True = comp_op_find_shortcut(To, Reg, {atom,true}, D),
-    {bif_to_test(Op, Ops, False),{jump,{f,True}}}.
-
-comp_op_find_shortcut(To0, Reg, Val, D) ->
-    case shortcut_select_label(To0, Reg, Val, D) of
-	To0 ->
-	    not_possible();
-	To ->
-	    case is_killed_at(Reg, To, D) of
-		false -> not_possible();
-		true -> To
-	    end
-    end.
-
-bif_to_test(Name, Args, Fail) ->
-    try
-	beam_utils:bif_to_test(Name, Args, {f,Fail})
-    catch
-	error:_ -> not_possible()
-    end.
-
-not_possible() -> throw(not_possible).
-
-%% combine_eqs(To, Operands, Acc) -> Instruction.
-%%  Combine two is_eq_exact instructions or (an is_eq_exact
-%%  instruction and a select_val instruction) to a select_val
-%%  instruction if possible.
-%%
-%%  Example:
-%%
-%%      is_eq_exact F1 Reg Lit1		    select_val Reg F2 [ Lit1 L1
-%%   L1:                .                                       Lit2 L2 ]
-%%                      .
-%%                      .	     ==>
-%%                      .
-%%   F1:  is_eq_exact F2 Reg Lit2          F1: is_eq_exact F2 Reg Lit2
-%%   L2:  ....				   L2:
-%%
-combine_eqs(To, [Reg,{Type,_}=Lit1]=Ops, D, Acc)
-    when Type =:= atom; Type =:= integer ->
-    Next = case Acc of
-               [{label,Lbl}|_] -> Lbl;
-               [{jump,{f,Lbl}}|_] -> Lbl
-           end,
-    case beam_utils:code_at(To, D) of
-	[{test,is_eq_exact,{f,F2},[Reg,{Type,_}=Lit2]},
-	 {label,L2}|_] when Lit1 =/= Lit2 ->
-	    {select,select_val,Reg,{f,F2},[Lit1,{f,Next},Lit2,{f,L2}]};
-	[{test,is_eq_exact,{f,F2},[Reg,{Type,_}=Lit2]},
-	 {jump,{f,L2}}|_] when Lit1 =/= Lit2 ->
-	    {select,select_val,Reg,{f,F2},[Lit1,{f,Next},Lit2,{f,L2}]};
-	[{select,select_val,Reg,{f,F2},[{Type,_}|_]=List0}|_] ->
-	    List = remove_from_list(Lit1, List0),
-	    {select,select_val,Reg,{f,F2},[Lit1,{f,Next}|List]};
-	_Is ->
-	    {test,is_eq_exact,{f,To},Ops}
-	end;
-combine_eqs(To, Ops, _D, _Acc) ->
-    {test,is_eq_exact,{f,To},Ops}.
-
-remove_from_list(Lit, [Lit,{f,_}|T]) ->
-    T;
-remove_from_list(Lit, [Val,{f,_}=Fail|T]) ->
-    [Val,Fail|remove_from_list(Lit, T)];
-remove_from_list(_, []) -> [].
-
-
-test_bs_literal(F, Ctxt, D,
-                [{test,bs_match_string,F,[Ctxt,Bs]},
-                 {test,bs_test_tail2,F,[Ctxt,0]}|Acc]) ->
-    test_bs_literal_1(Ctxt, Acc, D, Bs);
-test_bs_literal(F, Ctxt, D, [{test,bs_test_tail2,F,[Ctxt,0]}|Acc]) ->
-    test_bs_literal_1(Ctxt, Acc, D, <<>>);
-test_bs_literal(_, Ctxt, D, Acc) ->
-    test_bs_literal_1(Ctxt, Acc, D, none).
-
-test_bs_literal_1(Ctxt, Is, D, Literal) ->
-    case beam_utils:is_killed(Ctxt, Is, D) of
-        true -> {Literal,Is};
-        false -> not_killed
-    end.
-
-%% shortcut_bs_test(TargetLabel, ReversedInstructions, D) -> TargetLabel'
-%%  Try to shortcut the failure label for bit syntax matching.
-
-shortcut_bs_test(To, Is, D) ->
-    shortcut_bs_test_1(beam_utils:code_at(To, D), Is, To, D).
-
-shortcut_bs_test_1([{bs_restore2,Reg,SavePoint},
-		    {label,_},
-		    {test,bs_test_tail2,{f,To},[_,TailBits]}|_],
-		   PrevIs, To0, D) ->
-    case count_bits_matched(PrevIs, {Reg,SavePoint}, 0) of
-	Bits when Bits > TailBits ->
-	    %% This instruction will fail. We know because a restore has been
-	    %% done from the previous point SavePoint in the binary, and we
-	    %% also know that the binary contains at least Bits bits from
-	    %% SavePoint.
-	    %%
-	    %% Since we will skip a bs_restore2 if we shortcut to label To,
-	    %% we must now make sure that code at To does not depend on
-	    %% the position in the context in any way.
-	    case shortcut_bs_pos_used(To, Reg, D) of
-		false -> To;
-		true -> To0
-	    end;
-	_Bits ->
-	    To0
-    end;
-shortcut_bs_test_1([_|_], _, To, _) -> To.
-
-%% counts_bits_matched(ReversedInstructions, SavePoint, Bits) -> Bits'
-%%  Given a reversed instruction stream, determine the minimum number
-%%  of bits that will be matched by bit syntax instructions up to the
-%%  given save point.
-
-count_bits_matched([{test,bs_get_utf8,{f,_},_,_,_}|Is], SavePoint, Bits) ->
-    count_bits_matched(Is, SavePoint, Bits+8);
-count_bits_matched([{test,bs_get_utf16,{f,_},_,_,_}|Is], SavePoint, Bits) ->
-    count_bits_matched(Is, SavePoint, Bits+16);
-count_bits_matched([{test,bs_get_utf32,{f,_},_,_,_}|Is], SavePoint, Bits) ->
-    count_bits_matched(Is, SavePoint, Bits+32);
-count_bits_matched([{test,_,_,_,[_,Sz,U,{field_flags,_}],_}|Is], SavePoint, Bits) ->
-    case Sz of
-	{integer,N} -> count_bits_matched(Is, SavePoint, Bits+N*U);
-	_ -> count_bits_matched(Is, SavePoint, Bits)
-    end;
-count_bits_matched([{test,bs_match_string,_,[_,Bs]}|Is], SavePoint, Bits) ->
-    count_bits_matched(Is, SavePoint, Bits+bit_size(Bs));
-count_bits_matched([{test,_,_,_}|Is], SavePoint, Bits) ->
-    count_bits_matched(Is, SavePoint, Bits);
-count_bits_matched([{bs_save2,Reg,SavePoint}|_], {Reg,SavePoint}, Bits) ->
-    %% The save point we are looking for - we are done.
-    Bits;
-count_bits_matched([_|_], _, Bits) -> Bits.
-
-shortcut_bs_pos_used(To, Reg, D) ->
-    shortcut_bs_pos_used_1(beam_utils:code_at(To, D), Reg, D).
-
-shortcut_bs_pos_used_1([{bs_context_to_binary,Reg}|_], Reg, _) ->
-    false;
-shortcut_bs_pos_used_1(Is, Reg, D) ->
-    not beam_utils:is_killed(Reg, Is, D).
-
-%% shortcut_bs_start_match(TargetLabel, Reg) -> TargetLabel
-%%  A failing bs_start_match2 instruction means that the source (Reg)
-%%  cannot be a binary. That means that it is safe to skip
-%%  bs_context_to_binary instructions operating on Reg, and
-%%  bs_start_match2 instructions operating on Reg.
-
-shortcut_bs_start_match(To, Reg, D) ->
-    shortcut_bs_start_match_1(beam_utils:code_at(To, D), Reg, To, D).
-
-shortcut_bs_start_match_1([{bs_context_to_binary,Reg}|Is], Reg, To, D) ->
-    shortcut_bs_start_match_1(Is, Reg, To, D);
-shortcut_bs_start_match_1([{jump,{f,To}}|_], Reg, _, D) ->
-    Code = beam_utils:code_at(To, D),
-    shortcut_bs_start_match_1(Code, Reg, To, D);
-shortcut_bs_start_match_1([{test,bs_start_match2,{f,To},_,[Reg|_],_}|_],
-			  Reg, _, D) ->
-    Code = beam_utils:code_at(To, D),
-    shortcut_bs_start_match_1(Code, Reg, To, D);
-shortcut_bs_start_match_1(_, _, To, _) ->
-    To.
-
-%% shortcut_bs_context_to_binary(TargetLabel, Reg) -> TargetLabel
-%%  If a bs_start_match2 instruction has been eliminated, the
-%%  bs_context_to_binary instruction can be eliminated too.
-
-shortcut_bs_context_to_binary(To, Reg, D) ->
-    shortcut_bs_ctb_1(beam_utils:code_at(To, D), Reg, To, D).
-
-shortcut_bs_ctb_1([{bs_context_to_binary,Reg}|Is], Reg, To, D) ->
-    shortcut_bs_ctb_1(Is, Reg, To, D);
-shortcut_bs_ctb_1([{jump,{f,To}}|_], Reg, _, D) ->
-    Code = beam_utils:code_at(To, D),
-    shortcut_bs_ctb_1(Code, Reg, To, D);
-shortcut_bs_ctb_1(_, _, To, _) ->
-    To.
-
-%% shortcut_rel_op(FailLabel, Operator, [Operand], D) -> FailLabel'
-%%  Try to shortcut the given test instruction. Example:
-%%
-%%           is_ge L1 {x,0} 48
-%%     .
-%%     .
-%%     .
-%%     L1:   is_ge L2 {x,0} 65
-%%
-%%  The first test instruction can be rewritten to "is_ge L2 {x,0} 48"
-%%  since the instruction at L1 will also fail.
-%%
-%%  If there are instructions between L1 and the other test instruction
-%%  it may still be possible to do the shortcut. For example:
-%%
-%%     L1:   is_eq_exact L3 {x,0} 92
-%%           is_ge L2 {x,0} 65
-%%
-%%  Since the first test instruction failed, we know that {x,0} must
-%%  be less than 48; therefore, we know that {x,0} cannot be equal to
-%%  92 and the jump to L3 cannot happen.
-
-shortcut_rel_op(To, Op, Ops, D) ->
-    case normalize_op({test,Op,{f,To},Ops}) of
-	{{NormOp,A,B},_} ->
-	    Normalized = {negate_op(NormOp),A,B},
-	    shortcut_rel_op_fp(To, Normalized, D);
-	{_,_} ->
-	    To;
-	error ->
-	    To
-    end.
-
-shortcut_rel_op_fp(To0, Normalized, D) ->
-    Code = beam_utils:code_at(To0, D),
-    case shortcut_any_label(Code, Normalized) of
-	error ->
-	    To0;
-	To ->
-	    shortcut_rel_op_fp(To, Normalized, D)
-    end.
-
-%% shortcut_any_label([Instruction], PrevCondition) -> FailLabel | error
-%%  Using PrevCondition (a previous condition known to be true),
-%%  try to shortcut to another failure label.
-
-shortcut_any_label([{jump,{f,Lbl}}|_], _Prev) ->
-    Lbl;
-shortcut_any_label([{label,Lbl}|_], _Prev) ->
-    Lbl;
-shortcut_any_label([{select,select_val,R,{f,Fail},L}|_], Prev) ->
-    shortcut_selectval(L, R, Fail, Prev);
-shortcut_any_label([I|Is], Prev) ->
-    case normalize_op(I) of
-	error ->
-	    error;
-	{Normalized,Fail} ->
-	    %% We have a relational operator.
-	    case will_succeed(Prev, Normalized) of
-		no ->
-		    %% This test instruction will always branch
-		    %% to Fail.
-		    Fail;
-		yes ->
-		    %% This test instruction will never branch,
-		    %% so we will look at the next instruction.
-		    shortcut_any_label(Is, Prev);
-		maybe ->
-		    %% May or may not branch. From now on, we can only
-		    %% shortcut to the this specific failure label
-		    %% Fail.
-		    shortcut_specific_label(Is, Fail, Prev)
-	    end
-    end.
-
-%% shortcut_specific_label([Instruction], FailLabel, PrevCondition) ->
-%%    FailLabel | error
-%%  We have previously encountered a test instruction that may or
-%%  may not branch to FailLabel. Therefore we are only allowed
-%%  to do the shortcut to the same fail label (FailLabel).
-
-shortcut_specific_label([{label,_}|Is], Fail, Prev) ->
-    shortcut_specific_label(Is, Fail, Prev);
-shortcut_specific_label([{select,select_val,R,{f,F},L}|_], Fail, Prev) ->
-    case shortcut_selectval(L, R, F, Prev) of
-	Fail -> Fail;
-	_ -> error
-    end;
-shortcut_specific_label([I|Is], Fail, Prev) ->
-    case normalize_op(I) of
-	error ->
-	    error;
-	{Normalized,Fail} ->
-	    case will_succeed(Prev, Normalized) of
-		no ->
-		    %% Will branch to FailLabel.
-		    Fail;
-		yes ->
-		    %% Will definitely never branch.
-		    shortcut_specific_label(Is, Fail, Prev);
-		maybe ->
-		    %% May branch, but still OK since it will branch
-		    %% to FailLabel.
-		    shortcut_specific_label(Is, Fail, Prev)
-	    end;
-	{Normalized,_} ->
-	    %% This test instruction will branch to a different
-	    %% fail label, if it branches at all.
-	    case will_succeed(Prev, Normalized) of
-		yes ->
-		    %% Still OK, since the branch will never be
-		    %% taken.
-		    shortcut_specific_label(Is, Fail, Prev);
-		no ->
-		    %% Give up. The branch will definitely be taken
-		    %% to a different fail label.
-		    error;
-		maybe ->
-		    %% Give up. If the branch is taken, it will be
-		    %% to a different fail label.
-		    error
-	    end
-    end.
-
-
-%% shortcut_selectval(List, Reg, Fail, PrevCond) -> FailLabel | error
-%%  Try to shortcut a selectval instruction. A selectval instruction
-%%  is equivalent to the following instruction sequence:
-%%
-%%      is_ne_exact L1 Reg Value1
-%%              .
-%%              .
-%%              .
-%%      is_ne_exact LN Reg ValueN
-%%      jump DefaultFailLabel
-%%
-shortcut_selectval([Val,{f,Lbl}|T], R, Fail, Prev) ->
-    case will_succeed(Prev, {'=/=',R,get_literal(Val)}) of
-	yes -> shortcut_selectval(T, R, Fail, Prev);
-	no -> Lbl;
-	maybe -> error
-    end;
-shortcut_selectval([], _, Fail, _) -> Fail.
-
-%% will_succeed(PrevCondition, Condition) -> yes | no | maybe
-%%  PrevCondition is a condition known to be true. This function
-%%  will tell whether Condition will succeed.
-
-will_succeed({Op1,Reg,A}, {Op2,Reg,B}) ->
-    will_succeed_1(Op1, A, Op2, B);
-will_succeed({'=:=',Reg,{literal,A}}, {TypeTest,Reg}) ->
-    case erlang:TypeTest(A) of
-	false -> no;
-	true -> yes
-    end;
-will_succeed({_,_,_}, maybe) ->
-    maybe;
-will_succeed({_,_,_}, Test) when is_tuple(Test) ->
-    maybe.
-
-will_succeed_1('=:=', A, '<', B) ->
-    if
-	B =< A -> no;
-	true -> yes
-    end;
-will_succeed_1('=:=', A, '=<', B) ->
-    if
-	B < A -> no;
-	true -> yes
-    end;
-will_succeed_1('=:=', A, '=:=', B) ->
-    if
-	A =:= B -> yes;
-	true -> no
-    end;
-will_succeed_1('=:=', A, '=/=', B) ->
-    if
-	A =:= B -> no;
-	true -> yes
-    end;
-will_succeed_1('=:=', A, '>=', B) ->
-    if
-	B > A -> no;
-	true -> yes
-    end;
-will_succeed_1('=:=', A, '>', B) ->
-    if
-	B >= A -> no;
-	true -> yes
-    end;
-
-will_succeed_1('=/=', A, '=/=', B) when A =:= B -> yes;
-will_succeed_1('=/=', A, '=:=', B) when A =:= B -> no;
-
-will_succeed_1('<', A, '=:=', B)  when B >= A -> no;
-will_succeed_1('<', A, '=/=', B)  when B >= A -> yes;
-will_succeed_1('<', A, '<',   B)  when B >= A -> yes;
-will_succeed_1('<', A, '=<',  B)  when B > A  -> yes;
-will_succeed_1('<', A, '>=',  B)  when B > A  -> no;
-will_succeed_1('<', A, '>',   B)  when B >= A -> no;
-
-will_succeed_1('=<', A, '=:=', B) when B > A  -> no;
-will_succeed_1('=<', A, '=/=', B) when B > A  -> yes;
-will_succeed_1('=<', A, '<',   B) when B > A  -> yes;
-will_succeed_1('=<', A, '=<',  B) when B >= A -> yes;
-will_succeed_1('=<', A, '>=',  B) when B > A  -> no;
-will_succeed_1('=<', A, '>',   B) when B >= A -> no;
-
-will_succeed_1('>=', A, '=:=', B) when B < A  -> no;
-will_succeed_1('>=', A, '=/=', B) when B < A  -> yes;
-will_succeed_1('>=', A, '<',   B) when B =< A -> no;
-will_succeed_1('>=', A, '=<',  B) when B < A  -> no;
-will_succeed_1('>=', A, '>=',  B) when B =< A -> yes;
-will_succeed_1('>=', A, '>',   B) when B < A  -> yes;
-
-will_succeed_1('>', A, '=:=', B)  when B =< A -> no;
-will_succeed_1('>', A, '=/=', B)  when B =< A -> yes;
-will_succeed_1('>', A, '<',   B)  when B =< A -> no;
-will_succeed_1('>', A, '=<',  B)  when B < A  -> no;
-will_succeed_1('>', A, '>=',  B)  when B =< A -> yes;
-will_succeed_1('>', A, '>',   B)  when B < A  -> yes;
-
-will_succeed_1(_, _, _, _) -> maybe.
-
-%% normalize_op(Instruction) -> {Normalized,FailLabel} | error
-%%    Normalized = {Operator,Register,Literal} |
-%%                 {TypeTest,Register} |
-%%                 maybe
-%%    Operation = '<' | '=<' | '=:=' | '=/=' | '>=' | '>'
-%%    TypeTest = is_atom | is_integer ...
-%%    Literal = {literal,Term}
-%%
-%%  Normalize a relational operator to facilitate further
-%%  comparisons between operators. Always make the register
-%%  operand the first operand. Thus the following instruction:
-%%
-%%    {test,is_ge,{f,99},{integer,13},{x,0}}
-%%
-%%  will be normalized to:
-%%
-%%    {'=<',{x,0},{literal,13}}
-%%
-%%  NOTE: Bit syntax test instructions are scary. They may change the
-%%  state of match contexts and update registers, so we don't dare
-%%  mess with them.
-
-normalize_op({test,is_ge,{f,Fail},Ops}) ->
-    normalize_op_1('>=', Ops, Fail);
-normalize_op({test,is_lt,{f,Fail},Ops}) ->
-    normalize_op_1('<', Ops, Fail);
-normalize_op({test,is_eq_exact,{f,Fail},Ops}) ->
-    normalize_op_1('=:=', Ops, Fail);
-normalize_op({test,is_ne_exact,{f,Fail},Ops}) ->
-    normalize_op_1('=/=', Ops, Fail);
-normalize_op({test,is_nil,{f,Fail},[R]}) ->
-    normalize_op_1('=:=', [R,nil], Fail);
-normalize_op({test,Op,{f,Fail},[R]}) ->
-    case erl_internal:new_type_test(Op, 1) of
-	true -> {{Op,R},Fail};
-	false -> {maybe,Fail}
-    end;
-normalize_op({test,_,{f,Fail},_}=I) ->
-    case beam_utils:is_pure_test(I) of
-	true -> {maybe,Fail};
-	false -> error
-    end;
-normalize_op(_) ->
-    error.
-
-normalize_op_1(Op, [Op1,Op2], Fail) ->
-    case {get_literal(Op1),get_literal(Op2)} of
-	{error,error} ->
-	    %% Both operands are registers.
-	    {maybe,Fail};
-	{error,Lit} ->
-	    {{Op,Op1,Lit},Fail};
-	{Lit,error} ->
-	    {{turn_op(Op),Op2,Lit},Fail};
-	{_,_} ->
-	    %% Both operands are literals. Can probably only
-	    %% happen if the Core Erlang optimizations passes were
-	    %% turned off, so don't bother trying to do something
-	    %% smart here.
-	    {maybe,Fail}
-    end.
-
-turn_op('<') -> '>';
-turn_op('>=') -> '=<';
-turn_op('=:='=Op) -> Op;
-turn_op('=/='=Op) -> Op.
-
-negate_op('>=') -> '<';
-negate_op('<') -> '>=';
-negate_op('=<') -> '>';
-negate_op('>') -> '=<';
-negate_op('=:=') -> '=/=';
-negate_op('=/=') -> '=:='.
-
-get_literal({atom,Val}) ->
-    {literal,Val};
-get_literal({integer,Val}) ->
-    {literal,Val};
-get_literal({float,Val}) ->
-    {literal,Val};
-get_literal(nil) ->
-    {literal,[]};
-get_literal({literal,_}=Lit) ->
-    Lit;
-get_literal({_,_}) -> error.
-
-
-%%%
-%%% Removing stores to Y registers is not always safe
-%%% if there is an instruction that causes an exception
-%%% within a catch. In practice, there are few or no
-%%% opportunities for removing stores to Y registers anyway
-%%% if sys_core_fold has been run.
-%%%
-
-is_killed_at({x,_}=Reg, Lbl, D) ->
-    beam_utils:is_killed_at(Reg, Lbl, D);
-is_killed_at({y,_}, _, _) ->
-    false.
diff --git a/lib/compiler/src/beam_dict.erl b/lib/compiler/src/beam_dict.erl
index 990e86062a..b2056332e6 100644
--- a/lib/compiler/src/beam_dict.erl
+++ b/lib/compiler/src/beam_dict.erl
@@ -126,18 +126,17 @@ import(Mod0, Name0, Arity, #asm{imports=Imp0,next_import=NextIndex}=D0)
 	    {NextIndex,D2#asm{imports=Imp,next_import=NextIndex+1}}
     end.
 
-%% Returns the index for a string in the string table (adding the string to the
-%% table if necessary).
+%% Returns the index for a binary string in the string table (adding
+%% the string to the table if necessary).
 %%    string(String, Dict) -> {Offset, Dict'}
--spec string(string(), bdict()) -> {non_neg_integer(), bdict()}.
+-spec string(binary(), bdict()) -> {non_neg_integer(), bdict()}.
 
-string(Str, Dict) when is_list(Str) ->
+string(BinString, Dict) when is_binary(BinString) ->
     #asm{strings=Strings,string_offset=NextOffset} = Dict,
-    StrBin = list_to_binary(Str),
-    case old_string(StrBin, Strings) of
+    case old_string(BinString, Strings) of
 	none ->
-	    NewDict = Dict#asm{strings = <<Strings/binary,StrBin/binary>>,
-			       string_offset=NextOffset+byte_size(StrBin)},
+	    NewDict = Dict#asm{strings = <<Strings/binary,BinString/binary>>,
+			       string_offset=NextOffset+byte_size(BinString)},
 	    {NextOffset,NewDict};
 	Offset when is_integer(Offset) ->
 	    {NextOffset-Offset,Dict}
diff --git a/lib/compiler/src/beam_disasm.erl b/lib/compiler/src/beam_disasm.erl
index 6cee9acae4..7d048716e4 100644
--- a/lib/compiler/src/beam_disasm.erl
+++ b/lib/compiler/src/beam_disasm.erl
@@ -373,6 +373,8 @@ disasm_instr(B, Bs, Atoms, Literals) ->
 	    disasm_map_inst(get_map_elements, Arity, Bs, Atoms, Literals);
 	has_map_fields ->
 	    disasm_map_inst(has_map_fields, Arity, Bs, Atoms, Literals);
+	put_tuple2 ->
+	    disasm_put_tuple2(Bs, Atoms, Literals);
 	_ ->
 	    try decode_n_args(Arity, Bs, Atoms, Literals) of
 		{Args, RestBs} ->
@@ -413,6 +415,14 @@ disasm_map_inst(Inst, Arity, Bs0, Atoms, Literals) ->
     {List, RestBs} = decode_n_args(Len, Bs2, Atoms, Literals),
     {{Inst, Args ++ [{Z,U,List}]}, RestBs}.
 
+disasm_put_tuple2(Bs, Atoms, Literals) ->
+    {X, Bs1} = decode_arg(Bs, Atoms, Literals),
+    {Z, Bs2} = decode_arg(Bs1, Atoms, Literals),
+    {U, Bs3} = decode_arg(Bs2, Atoms, Literals),
+    {u, Len} = U,
+    {List, RestBs} = decode_n_args(Len, Bs3, Atoms, Literals),
+    {{put_tuple2, [X,{Z,U,List}]}, RestBs}.
+
 %%-----------------------------------------------------------------------
 %% decode_arg([Byte]) -> {Arg, [Byte]}
 %%
@@ -1095,6 +1105,23 @@ resolve_inst({get_hd,[Src,Dst]},_,_,_) ->
 resolve_inst({get_tl,[Src,Dst]},_,_,_) ->
     {get_tl,Src,Dst};
 
+%% OTP 22
+resolve_inst({bs_start_match3,[Fail,Bin,Live,Dst]},_,_,_) ->
+    {bs_start_match3,Fail,Bin,Live,Dst};
+resolve_inst({bs_get_tail,[Src,Dst,Live]},_,_,_) ->
+    {bs_get_tail,Src,Dst,Live};
+resolve_inst({bs_get_position,[Src,Dst,Live]},_,_,_) ->
+    {bs_get_position,Src,Dst,Live};
+resolve_inst({bs_set_position,[Src,Dst]},_,_,_) ->
+    {bs_set_position,Src,Dst};
+
+%%
+%% OTP 22.
+%%
+resolve_inst({put_tuple2,[Dst,{{z,1},{u,_},List0}]},_,_,_) ->
+    List = resolve_args(List0),
+    {put_tuple2,Dst,{list,List}};
+
 %%
 %% Catches instructions that are not yet handled.
 %%
diff --git a/lib/compiler/src/beam_except.erl b/lib/compiler/src/beam_except.erl
index 05c0f4fbc7..28c89782c9 100644
--- a/lib/compiler/src/beam_except.erl
+++ b/lib/compiler/src/beam_except.erl
@@ -31,7 +31,7 @@
 %%% erlang:error(function_clause, Args)  => jump FuncInfoLabel
 %%%
 
--import(lists, [reverse/1]).
+-import(lists, [reverse/1,reverse/2,seq/2,splitwith/2]).
 
 -spec module(beam_utils:module_code(), [compile:option()]) ->
                     {'ok',beam_utils:module_code()}.
@@ -53,7 +53,7 @@ function({function,Name,Arity,CLabel,Is0}) ->
 -record(st,
 	{lbl :: beam_asm:label(),              %func_info label
 	 loc :: [_],                           %location for func_info
-	 arity :: arity()                       %arity for function
+	 arity :: arity()                      %arity for function
 	 }).
 
 function_1(Is0) ->
@@ -74,27 +74,33 @@ translate([I|Is], St, Acc) ->
 translate([], _, Acc) ->
     reverse(Acc).
 
-translate_1(Ar, I, Is, St, [{line,_}=Line|Acc1]=Acc0) ->
-    case dig_out(Ar, Acc1) of
+translate_1(Ar, I, Is, #st{arity=Arity}=St, [{line,_}=Line|Acc1]=Acc0) ->
+    case dig_out(Ar, Arity, Acc1) of
 	no ->
 	    translate(Is, St, [I|Acc0]);
-	{yes,{function_clause,Arity},Acc2} ->
-	    case {Line,St} of
-		{{line,Loc},#st{lbl=Fi,loc=Loc,arity=Arity}} ->
+	{yes,function_clause,Acc2} ->
+	    case {Is,Line,St} of
+		{[return|_],{line,Loc},#st{lbl=Fi,loc=Loc}} ->
 		    Instr = {jump,{f,Fi}},
 		    translate(Is, St, [Instr|Acc2]);
-		{_,_} ->
-		    %% This must be "error(function_clause, Args)" in
-		    %% the Erlang source code or a fun. Don't translate.
+		{_,_,_} ->
+                    %% Not a call_only instruction, or not the same
+                    %% location information as in in the line instruction
+                    %% before the func_info instruction. Not safe
+                    %% to translate to a jump.
 		    translate(Is, St, [I|Acc0])
 	    end;
 	{yes,Instr,Acc2} ->
 	    translate(Is, St, [Instr,Line|Acc2])
     end.
 
-dig_out(Ar, [{kill,_}|Is]) ->
-    dig_out(Ar, Is);
-dig_out(1, [{block,Bl0}|Is]) ->
+dig_out(1, _Arity, Is) ->
+    dig_out(Is);
+dig_out(2, Arity, Is) ->
+    dig_out_fc(Arity, Is);
+dig_out(_, _, _) -> no.
+
+dig_out([{block,Bl0}|Is]) ->
     case dig_out_block(reverse(Bl0)) of
 	no -> no;
 	{yes,What,[]} ->
@@ -102,25 +108,13 @@ dig_out(1, [{block,Bl0}|Is]) ->
 	{yes,What,Bl} ->
 	    {yes,What,[{block,Bl}|Is]}
     end;
-dig_out(2, [{block,Bl}|Is]) ->
-    case dig_out_block_fc(Bl) of
-	no -> no;
-	{yes,What} -> {yes,What,Is}
-    end;
-dig_out(_, _) -> no.
+dig_out(_) -> no.
 
 dig_out_block([{set,[{x,0}],[{atom,if_clause}],move}]) ->
     {yes,if_end,[]};
 dig_out_block([{set,[{x,0}],[{literal,{Exc,Value}}],move}|Is]) ->
     translate_exception(Exc, {literal,Value}, Is, 0);
-dig_out_block([{set,[{x,0}],[Tuple],move},
-	       {set,[],[Value],put},
-	       {set,[],[{atom,Exc}],put},
-	       {set,[Tuple],[],{put_tuple,2}}|Is]) ->
-    translate_exception(Exc, Value, Is, 3);
-dig_out_block([{set,[],[Value],put},
-	       {set,[],[{atom,Exc}],put},
-	       {set,[{x,0}],[],{put_tuple,2}}|Is]) ->
+dig_out_block([{set,[{x,0}],[{atom,Exc},Value],put_tuple2}|Is]) ->
     translate_exception(Exc, Value, Is, 3);
 dig_out_block(_) -> no.
 
@@ -138,23 +132,113 @@ fix_block(Is, Words) ->
     reverse(fix_block_1(Is, Words)).
 
 fix_block_1([{set,[],[],{alloc,Live,{F1,F2,Needed0,F3}}}|Is], Words) ->
-    Needed = Needed0 - Words,
-    true = Needed >= 0,				%Assertion.
-    [{set,[],[],{alloc,Live,{F1,F2,Needed,F3}}}|Is];
+    case Needed0 - Words of
+        0 ->
+            Is;
+        Needed ->
+            true = Needed >= 0,				%Assertion.
+            [{set,[],[],{alloc,Live,{F1,F2,Needed,F3}}}|Is]
+    end;
 fix_block_1([I|Is], Words) ->
     [I|fix_block_1(Is, Words)].
 
-dig_out_block_fc([{set,[],[],{alloc,Live,_}}|Bl]) ->
-    case dig_out_fc(Bl, Live-1, nil) of
-	no ->
-	    no;
-	yes ->
-	    {yes,{function_clause,Live}}
+
+dig_out_fc(Arity, Is0) ->
+    Regs0 = maps:from_list([{{x,X},{arg,X}} || X <- seq(0, Arity-1)]),
+    {Is,Acc0} = splitwith(fun({label,_}) -> false;
+                             ({test,_,_,_}) -> false;
+                             (_) -> true
+                          end, Is0),
+    {Regs,Acc} = dig_out_fc_1(reverse(Is), Regs0, Acc0),
+    case Regs of
+        #{{x,0}:={atom,function_clause},{x,1}:=Args} ->
+            case moves_from_stack(Args, 0, []) of
+                {Moves,Arity} ->
+                    {yes,function_clause,reverse(Moves, Acc)};
+                {_,_} ->
+                    no
+            end;
+        #{} ->
+            no
+    end.
+
+dig_out_fc_1([{block,Bl}|Is], Regs0, Acc) ->
+    Regs = dig_out_fc_block(Bl, Regs0),
+    dig_out_fc_1(Is, Regs, Acc);
+dig_out_fc_1([{bs_set_position,_,_}=I|Is], Regs, Acc) ->
+    dig_out_fc_1(Is, Regs, [I|Acc]);
+dig_out_fc_1([{bs_get_tail,Src,Dst,Live0}|Is], Regs0, Acc) ->
+    Regs = prune_xregs(Live0, Regs0),
+    Live = dig_out_stack_live(Regs, Live0),
+    I = {bs_get_tail,Src,Dst,Live},
+    dig_out_fc_1(Is, Regs, [I|Acc]);
+dig_out_fc_1([_|_], _Regs, _Acc) ->
+    {#{},[]};
+dig_out_fc_1([], Regs, Acc) ->
+    {Regs,Acc}.
+
+dig_out_fc_block([{set,[],[],{alloc,Live,_}}|Is], Regs0) ->
+    Regs = prune_xregs(Live, Regs0),
+    dig_out_fc_block(Is, Regs);
+dig_out_fc_block([{set,[Dst],[Hd,Tl],put_list}|Is], Regs0) ->
+    Regs = Regs0#{Dst=>{cons,get_reg(Hd, Regs0),get_reg(Tl, Regs0)}},
+    dig_out_fc_block(Is, Regs);
+dig_out_fc_block([{set,[Dst],[Src],move}|Is], Regs0) ->
+    Regs = Regs0#{Dst=>get_reg(Src, Regs0)},
+    dig_out_fc_block(Is, Regs);
+dig_out_fc_block([{set,_,_,_}|_], _Regs) ->
+    %% Unknown instruction. Fail.
+    #{};
+dig_out_fc_block([], Regs) -> Regs.
+
+dig_out_stack_live(Regs, Default) ->
+    Reg = {x,2},
+    case Regs of
+        #{Reg:=List} ->
+            dig_out_stack_live_1(List, Default);
+        #{} ->
+            Default
+    end.
+
+dig_out_stack_live_1({cons,{arg,N},T}, Live) ->
+    dig_out_stack_live_1(T, max(N + 1, Live));
+dig_out_stack_live_1({cons,_,T}, Live) ->
+    dig_out_stack_live_1(T, Live);
+dig_out_stack_live_1(nil, Live) ->
+    Live;
+dig_out_stack_live_1(_, Live) -> Live.
+
+prune_xregs(Live, Regs) ->
+    maps:filter(fun({x,X}, _) -> X < Live end, Regs).
+
+moves_from_stack({cons,{arg,N},_}, I, _Acc) when N =/= I ->
+    %% Wrong argument. Give up.
+    {[],-1};
+moves_from_stack({cons,H,T}, I, Acc) ->
+    case H of
+        {arg,I} ->
+            moves_from_stack(T, I+1, Acc);
+        _ ->
+            moves_from_stack(T, I+1, [{move,H,{x,I}}|Acc])
     end;
-dig_out_block_fc(_) -> no.
+moves_from_stack(nil, I, Acc) ->
+    {reverse(Acc),I};
+moves_from_stack({literal,[H|T]}, I, Acc) ->
+    Cons = {cons,tag_literal(H),tag_literal(T)},
+    moves_from_stack(Cons, I, Acc);
+moves_from_stack(_, _, _) ->
+    %% Not understood. Give up.
+    {[],-1}.
+
+
+get_reg(R, Regs) ->
+    case Regs of
+        #{R:=Val} -> Val;
+        #{} -> R
+    end.
 
-dig_out_fc([{set,[Dst],[{x,Reg},Dst0],put_list}|Is], Reg, Dst0) ->
-    dig_out_fc(Is, Reg-1, Dst);
-dig_out_fc([{set,[{x,0}],[{atom,function_clause}],move}], -1, {x,1}) ->
-    yes;
-dig_out_fc(_, _, _) -> no.
+tag_literal([]) -> nil;
+tag_literal(T) when is_atom(T) -> {atom,T};
+tag_literal(T) when is_float(T) -> {float,T};
+tag_literal(T) when is_integer(T) -> {integer,T};
+tag_literal(T) -> {literal,T}.
diff --git a/lib/compiler/src/beam_flatten.erl b/lib/compiler/src/beam_flatten.erl
index 20bd23a912..3e6bc1b1ed 100644
--- a/lib/compiler/src/beam_flatten.erl
+++ b/lib/compiler/src/beam_flatten.erl
@@ -32,8 +32,7 @@ module({Mod,Exp,Attr,Fs,Lc}, _Opt) ->
     {ok,{Mod,Exp,Attr,[function(F) || F <- Fs],Lc}}.
 
 function({function,Name,Arity,CLabel,Is0}) ->
-    Is1 = block(Is0),
-    Is = opt(Is1),
+    Is = block(Is0),
     {function,Name,Arity,CLabel,Is}.
 
 block(Is) ->
@@ -44,18 +43,11 @@ block([I|Is], Acc) -> block(Is, [I|Acc]);
 block([], Acc) -> reverse(Acc).
 
 norm_block([{set,[],[],{alloc,R,Alloc}}|Is], Acc0) ->
-    case insert_alloc_in_bs_init(Acc0, Alloc) of
-	impossible ->
-	    norm_block(Is, reverse(norm_allocate(Alloc, R), Acc0));
-	Acc ->
-	    norm_block(Is, Acc)
-    end;
-norm_block([{set,[D1],[S],get_hd},{set,[D2],[S],get_tl}|Is], Acc) ->
-    I = {get_list,S,D1,D2},
-    norm_block(Is, [I|Acc]);
-norm_block([I|Is], Acc) -> norm_block(Is, [norm(I)|Acc]);
+    norm_block(Is, reverse(norm_allocate(Alloc, R), Acc0));
+norm_block([I|Is], Acc) ->
+    norm_block(Is, [norm(I)|Acc]);
 norm_block([], Acc) -> Acc.
-    
+
 norm({set,[D],As,{bif,N,F}})      -> {bif,N,F,As,D};
 norm({set,[D],As,{alloc,R,{gc_bif,N,F}}}) -> {gc_bif,N,F,R,As,D};
 norm({set,[D],[],init})           -> {init,D};
@@ -63,6 +55,7 @@ norm({set,[D],[S],move})          -> {move,S,D};
 norm({set,[D],[S],fmove})         -> {fmove,S,D};
 norm({set,[D],[S],fconv})         -> {fconv,S,D};
 norm({set,[D],[S1,S2],put_list})  -> {put_list,S1,S2,D};
+norm({set,[D],Els,put_tuple2})    -> {put_tuple2,D,{list,Els}};
 norm({set,[D],[],{put_tuple,A}})  -> {put_tuple,A,D};
 norm({set,[],[S],put})            -> {put,S};
 norm({set,[D],[S],{get_tuple_element,I}}) -> {get_tuple_element,S,I,D};
@@ -88,57 +81,3 @@ norm_allocate({nozero,Ns,0,Inits}, Regs) ->
     [{allocate,Ns,Regs}|Inits];
 norm_allocate({nozero,Ns,Nh,Inits}, Regs) ->
     [{allocate_heap,Ns,Nh,Regs}|Inits].
-
-%% insert_alloc_in_bs_init(ReverseInstructionStream, AllocationInfo) ->
-%%                                  impossible | ReverseInstructionStream'
-%%   A bs_init/6 instruction should not be followed by a test heap instruction.
-%%   Given the AllocationInfo from a test heap instruction, merge the
-%%   allocation amounts into the previous bs_init/6 instruction (if any).
-%%
-insert_alloc_in_bs_init([{bs_put,_,_,_}=I|Is], Alloc) ->
-    %% The instruction sequence ends with an bs_put/4 instruction.
-    %% We'll need to search backwards for the bs_init/6 instruction.
-    insert_alloc_1(Is, Alloc, [I]);
-insert_alloc_in_bs_init(_, _) -> impossible.
-
-insert_alloc_1([{bs_init=Op,Fail,Info0,Live,Ss,Dst}|Is],
-	       {_,nostack,Ws2,[]}, Acc) when is_integer(Live) ->
-    %% The number of extra heap words is always in the second position
-    %% in the Info tuple.
-    Ws1 = element(2, Info0),
-    Al = beam_utils:combine_heap_needs(Ws1, Ws2),
-    Info = setelement(2, Info0, Al),
-    I = {Op,Fail,Info,Live,Ss,Dst},
-    reverse(Acc, [I|Is]);
-insert_alloc_1([{bs_put,_,_,_}=I|Is], Alloc, Acc) ->
-    insert_alloc_1(Is, Alloc, [I|Acc]).
-
-%% opt(Is0) -> Is
-%%  Simple peep-hole optimization to move a {move,Any,{x,0}} past
-%%  any kill up to the next call instruction. (To give the loader
-%%  an opportunity to combine the 'move' and the 'call' instructions.)
-%%
-opt(Is) ->
-    opt_1(Is, []).
-
-opt_1([{move,_,{x,0}}=I|Is0], Acc0) ->
-    case move_past_kill(Is0, I, Acc0) of
-	impossible -> opt_1(Is0, [I|Acc0]);
-	{Is,Acc} -> opt_1(Is, Acc)
-    end;
-opt_1([I|Is], Acc) ->
-    opt_1(Is, [I|Acc]);
-opt_1([], Acc) -> reverse(Acc).
-
-move_past_kill([{kill,Src}|_], {move,Src,_}, _) ->
-    impossible;
-move_past_kill([{kill,_}=I|Is], Move, Acc) ->
-    move_past_kill(Is, Move, [I|Acc]);
-move_past_kill([{trim,N,_}=I|Is], {move,Src,Dst}=Move, Acc) ->
-    case Src of
-	{y,Y} when Y < N-> impossible;
-	{y,Y} -> {Is,[{move,{y,Y-N},Dst},I|Acc]};
-	_ -> {Is,[Move,I|Acc]}
-    end;
-move_past_kill(Is, Move, Acc) ->
-    {Is,[Move|Acc]}.
diff --git a/lib/compiler/src/beam_jump.erl b/lib/compiler/src/beam_jump.erl
index 22974da398..74f80ca70e 100644
--- a/lib/compiler/src/beam_jump.erl
+++ b/lib/compiler/src/beam_jump.erl
@@ -22,7 +22,7 @@
 -module(beam_jump).
 
 -export([module/2,
-	 is_unreachable_after/1,is_exit_instruction/1,
+	 is_exit_instruction/1,
 	 remove_unused_labels/1]).
 
 %%% The following optimisations are done:
@@ -101,6 +101,10 @@
 %%%      always keep the label. (beam_clean will remove any unused
 %%%      labels.)
 %%%
+%%% (7)  Replace a jump to a return instruction with a return instruction.
+%%%      Similarly, replace a jump to deallocate + return with those
+%%%      instructions.
+%%%
 %%% Note: This modules depends on (almost) all branches and jumps only
 %%% going forward, so that we can remove instructions (including definition
 %%% of labels) after any label that has not been referenced by the code
@@ -128,27 +132,136 @@
 %%% on the program state.
 %%% 
 
--import(lists, [dropwhile/2,reverse/1,reverse/2,foldl/3]).
+-import(lists, [foldl/3,mapfoldl/3,reverse/1,reverse/2]).
 
 -type instruction() :: beam_utils:instruction().
 
 -spec module(beam_utils:module_code(), [compile:option()]) ->
                     {'ok',beam_utils:module_code()}.
 
-module({Mod,Exp,Attr,Fs0,Lc}, _Opt) ->
-    Fs = [function(F) || F <- Fs0],
+module({Mod,Exp,Attr,Fs0,Lc0}, _Opt) ->
+    {Fs,Lc} = mapfoldl(fun function/2, Lc0, Fs0),
     {ok,{Mod,Exp,Attr,Fs,Lc}}.
 
 %% function(Function) -> Function'
 %%  Optimize jumps and branches.
 %%
 %%  NOTE: This function assumes that there are no labels inside blocks.
-function({function,Name,Arity,CLabel,Asm0}) ->
-    Asm1 = share(Asm0),
-    Asm2 = move(Asm1),
-    Asm3 = opt(Asm2, CLabel),
-    Asm = remove_unused_labels(Asm3),
-    {function,Name,Arity,CLabel,Asm}.
+function({function,Name,Arity,CLabel,Asm0}, Lc0) ->
+    try
+        Asm1 = eliminate_moves(Asm0),
+        {Asm2,Lc} = insert_labels(Asm1, Lc0, []),
+        Asm3 = share(Asm2),
+        Asm4 = move(Asm3),
+        Asm5 = opt(Asm4, CLabel),
+        Asm6 = unshare(Asm5),
+        Asm = remove_unused_labels(Asm6),
+        {{function,Name,Arity,CLabel,Asm},Lc}
+    catch
+        Class:Error:Stack ->
+	    io:fwrite("Function: ~w/~w\n", [Name,Arity]),
+	    erlang:raise(Class, Error, Stack)
+    end.
+
+%%%
+%%% Scan instructions in execution order and remove redundant 'move'
+%%% instructions. 'move' instructions are redundant if we know that
+%%% the register already contains the value being assigned, as in the
+%%% following code:
+%%%
+%%%           select_val Register FailLabel [... Literal => L1...]
+%%%                      .
+%%%                      .
+%%%                      .
+%%%   L1:     move Literal Register
+%%%
+
+eliminate_moves(Is) ->
+    eliminate_moves(Is, #{}, []).
+
+eliminate_moves([{select,select_val,Reg,{f,Fail},List}=I|Is], D0, Acc) ->
+    D1 = add_unsafe_label(Fail, D0),
+    D = update_value_dict(List, Reg, D1),
+    eliminate_moves(Is, D, [I|Acc]);
+eliminate_moves([{test,is_eq_exact,_,[Reg,Val]}=I,
+                 {block,BlkIs0}|Is], D0, Acc) ->
+    D = update_unsafe_labels(I, D0),
+    RegVal = {Reg,Val},
+    BlkIs = eliminate_moves_blk(BlkIs0, RegVal),
+    eliminate_moves([{block,BlkIs}|Is], D, [I|Acc]);
+eliminate_moves([{label,Lbl},{block,BlkIs0}=Blk|Is], D, Acc0) ->
+    Acc = [{label,Lbl}|Acc0],
+    case {no_fallthrough(Acc0),D} of
+        {true,#{Lbl:={_,_}=RegVal}} ->
+            BlkIs = eliminate_moves_blk(BlkIs0, RegVal),
+            eliminate_moves([{block,BlkIs}|Is], D, Acc);
+        {_,_} ->
+            eliminate_moves([Blk|Is], D, Acc)
+    end;
+eliminate_moves([{block,[]}|Is], D, Acc) ->
+    %% Empty blocks can prevent further jump optimizations.
+    eliminate_moves(Is, D, Acc);
+eliminate_moves([I|Is], D0, Acc) ->
+    D = update_unsafe_labels(I, D0),
+    eliminate_moves(Is, D, [I|Acc]);
+eliminate_moves([], _, Acc) -> reverse(Acc).
+
+eliminate_moves_blk([{set,[Dst],[_],move}|_]=Is, {_,Dst}) ->
+    Is;
+eliminate_moves_blk([{set,[Dst],[Lit],move}|Is], {Dst,Lit}) ->
+    %% Remove redundant 'move' instruction.
+    Is;
+eliminate_moves_blk([{set,[Dst],[_],move}|_]=Is, {Dst,_}) ->
+    Is;
+eliminate_moves_blk([{set,[_],[_],move}=I|Is], {_,_}=RegVal) ->
+    [I|eliminate_moves_blk(Is, RegVal)];
+eliminate_moves_blk(Is, _) -> Is.
+
+no_fallthrough([I|_]) ->
+    is_unreachable_after(I).
+
+update_value_dict([Lit,{f,Lbl}|T], Reg, D0) ->
+    D = case D0 of
+            #{Lbl:=unsafe} -> D0;
+            #{Lbl:={Reg,Lit}} -> D0;
+            #{Lbl:=_} -> D0#{Lbl:=unsafe};
+            #{} -> D0#{Lbl=>{Reg,Lit}}
+        end,
+    update_value_dict(T, Reg, D);
+update_value_dict([], _, D) -> D.
+
+add_unsafe_label(L, D) ->
+    D#{L=>unsafe}.
+
+update_unsafe_labels(I, D) ->
+    Ls = instr_labels(I),
+    update_unsafe_labels_1(Ls, D).
+
+update_unsafe_labels_1([L|Ls], D) ->
+    update_unsafe_labels_1(Ls, D#{L=>unsafe});
+update_unsafe_labels_1([], D) -> D.
+
+%%%
+%%% It seems to be useful to insert extra labels after certain
+%%% test instructions. This used to be done by beam_dead.
+%%%
+
+insert_labels([{test,Op,_,_}=I|Is], Lc, Acc) ->
+    Useful = case Op of
+                 is_lt -> true;
+                 is_ge -> true;
+                 is_eq_exact -> true;
+                 is_ne_exact -> true;
+                 _ -> false
+             end,
+    case Useful of
+	false -> insert_labels(Is, Lc, [I|Acc]);
+	true -> insert_labels(Is, Lc+1, [{label,Lc},I|Acc])
+    end;
+insert_labels([I|Is], Lc, Acc) ->
+    insert_labels(Is, Lc, [I|Acc]);
+insert_labels([], Lc, Acc) ->
+    {reverse(Acc),Lc}.
 
 %%%
 %%% (1) We try to share the code for identical code segments by replacing all
@@ -156,41 +269,51 @@ function({function,Name,Arity,CLabel,Asm0}) ->
 %%%
 
 share(Is0) ->
-    %% We will get more sharing if we never fall through to a label.
-    Is = eliminate_fallthroughs(Is0, []),
-    share_1(Is, #{}, [], []).
+    Is1 = eliminate_fallthroughs(Is0, []),
+    Is2 = find_fixpoint(fun(Is) ->
+                                share_1(Is, #{}, #{}, [], [])
+                        end, Is1),
+    reverse(Is2).
 
-share_1([{label,L}=Lbl|Is], Dict0, [_|_]=Seq, Acc) ->
+share_1([{label,L}=Lbl|Is], Dict0, Lbls0, [_|_]=Seq, Acc) ->
     case maps:find(Seq, Dict0) of
-	error ->
-	    Dict = maps:put(Seq, L, Dict0),
-	    share_1(Is, Dict, [], [Lbl|Seq ++ Acc]);
-	{ok,Label} ->
-	    share_1(Is, Dict0, [], [Lbl,{jump,{f,Label}}|Acc])
+        error ->
+            Dict = maps:put(Seq, L, Dict0),
+            share_1(Is, Dict, Lbls0, [], [[Lbl|Seq]|Acc]);
+        {ok,Label} ->
+            Lbls = maps:put(L, Label, Lbls0),
+            share_1(Is, Dict0, Lbls, [], [[Lbl,{jump,{f,Label}}]|Acc])
     end;
-share_1([{func_info,_,_,_}=I|Is], _, [], Acc) ->
-    reverse(Is, [I|Acc]);
-share_1([{'catch',_,_}=I|Is], Dict0, Seq, Acc) ->
-    Dict = clean_non_sharable(Dict0),
-    share_1(Is, Dict, [I|Seq], Acc);
-share_1([{'try',_,_}=I|Is], Dict0, Seq, Acc) ->
-    Dict = clean_non_sharable(Dict0),
-    share_1(Is, Dict, [I|Seq], Acc);
-share_1([{try_case,_}=I|Is], Dict0, Seq, Acc) ->
-    Dict = clean_non_sharable(Dict0),
-    share_1(Is, Dict, [I|Seq], Acc);
-share_1([{catch_end,_}=I|Is], Dict0, Seq, Acc) ->
-    Dict = clean_non_sharable(Dict0),
-    share_1(Is, Dict, [I|Seq], Acc);
-share_1([I|Is], Dict, Seq, Acc) ->
+share_1([{func_info,_,_,_}|_]=Is0, _, Lbls, [], Acc0) when Lbls =/= #{} ->
+    lists:foldl(fun(Is, Acc) ->
+        beam_utils:replace_labels(Is, Acc, Lbls, fun(Old) -> Old end)
+    end, Is0, Acc0);
+share_1([{func_info,_,_,_}|_]=Is, _, Lbls, [], Acc) when Lbls =:= #{} ->
+    lists:foldl(fun lists:reverse/2, Is, Acc);
+share_1([{'catch',_,_}=I|Is], Dict0, Lbls0, Seq, Acc) ->
+    {Dict,Lbls} = clean_non_sharable(Dict0, Lbls0),
+    share_1(Is, Dict, Lbls, [I|Seq], Acc);
+share_1([{'try',_,_}=I|Is], Dict0, Lbls0, Seq, Acc) ->
+    {Dict,Lbls} = clean_non_sharable(Dict0, Lbls0),
+    share_1(Is, Dict, Lbls, [I|Seq], Acc);
+share_1([{try_case,_}=I|Is], Dict0, Lbls0, Seq, Acc) ->
+    {Dict,Lbls} = clean_non_sharable(Dict0, Lbls0),
+    share_1(Is, Dict, Lbls, [I|Seq], Acc);
+share_1([{catch_end,_}=I|Is], Dict0, Lbls0, Seq, Acc) ->
+    {Dict,Lbls} = clean_non_sharable(Dict0, Lbls0),
+    share_1(Is, Dict, Lbls, [I|Seq], Acc);
+share_1([{jump,{f,To}}=I,{label,L}=Lbl|Is], Dict0, Lbls0, _Seq, Acc) ->
+    Lbls = maps:put(L, To, Lbls0),
+    share_1(Is, Dict0, Lbls, [], [[Lbl,I]|Acc]);
+share_1([I|Is], Dict, Lbls, Seq, Acc) ->
     case is_unreachable_after(I) of
 	false ->
-	    share_1(Is, Dict, [I|Seq], Acc);
+	    share_1(Is, Dict, Lbls, [I|Seq], Acc);
 	true ->
-	    share_1(Is, Dict, [I], Acc)
+	    share_1(Is, Dict, Lbls, [I], Acc)
     end.
 
-clean_non_sharable(Dict) ->
+clean_non_sharable(Dict0, Lbls0) ->
     %% We are passing in or out of a 'catch' or 'try' block. Remove
     %% sequences that should not be shared over the boundaries of the
     %% block. Since the end of the sequence must match, the only
@@ -198,7 +321,17 @@ clean_non_sharable(Dict) ->
     %% the 'catch'/'try' block is a sequence that ends with an
     %% instruction that causes an exception. Any sequence that causes
     %% an exception must contain a line/1 instruction.
-    maps:filter(fun(K, _V) -> sharable_with_try(K) end, Dict).
+    Dict1 = maps:to_list(Dict0),
+    Lbls1 = maps:to_list(Lbls0),
+    {Dict2,Lbls2} = foldl(fun({K, V}, {Dict,Lbls}) ->
+                                  case sharable_with_try(K) of
+                                      true ->
+                                          {[{K,V}|Dict],lists:keydelete(V, 2, Lbls)};
+                                      false ->
+                                          {Dict,Lbls}
+                                  end
+                          end, {[],Lbls1}, Dict1),
+    {maps:from_list(Dict2),maps:from_list(Lbls2)}.
 
 sharable_with_try([{line,_}|_]) ->
     %% This sequence may cause an exception and may potentially
@@ -251,8 +384,6 @@ extract_seq([{line,_}=Line|Is], Acc) ->
     extract_seq(Is, [Line|Acc]);
 extract_seq([{block,_}=Bl|Is], Acc) ->
     extract_seq_1(Is, [Bl|Acc]);
-extract_seq([{bs_context_to_binary,_}=I|Is], Acc) ->
-    extract_seq_1(Is, [I|Acc]);
 extract_seq([{label,_}|_]=Is, Acc) ->
     extract_seq_1(Is, Acc);
 extract_seq(_, _) -> no.
@@ -276,14 +407,13 @@ extract_seq_1(_, _) -> no.
 	{
 	  entry :: beam_asm:label(), %Entry label (must not be moved).
 	  replace :: #{beam_asm:label() := beam_asm:label()}, %Labels to replace.
-	  labels :: cerl_sets:set(),         %Set of referenced labels.
-          index :: beam_utils:code_index() | {lazy,[beam_utils:instruction()]} %Index built lazily only if needed
+	  labels :: cerl_sets:set()         %Set of referenced labels.
 	}).
 
 opt(Is0, CLabel) ->
     find_fixpoint(fun(Is) ->
 			  Lbls = initial_labels(Is),
-			  St = #st{entry=CLabel,replace=#{},labels=Lbls,index={lazy,Is}},
+			  St = #st{entry=CLabel,replace=#{},labels=Lbls},
 			  opt(Is, [], St)
 		  end, Is0).
 
@@ -293,7 +423,7 @@ find_fixpoint(OptFun, Is0) ->
 	Is -> find_fixpoint(OptFun, Is)
     end.
 
-opt([{test,_,{f,L}=Lbl,_}=I|[{jump,{f,L}}|_]=Is], Acc0, St0) ->
+opt([{test,_,{f,L}=Lbl,_}=I|[{jump,{f,L}}|_]=Is], Acc, St) ->
     %% We have
     %%    Test Label Ops
     %%    jump Label
@@ -302,23 +432,10 @@ opt([{test,_,{f,L}=Lbl,_}=I|[{jump,{f,L}}|_]=Is], Acc0, St0) ->
     case beam_utils:is_pure_test(I) of
 	false ->
 	    %% Test is not pure; we must keep it.
-	    opt(Is, [I|Acc0], label_used(Lbl, St0));
+	    opt(Is, [I|Acc], label_used(Lbl, St));
 	true ->
 	    %% The test is pure and its failure label is the same
 	    %% as in the jump that follows -- thus it is not needed.
-            %% Check if any of the previous instructions could also be eliminated.
-            {Acc,St} = opt_useless_loads(Acc0, L, St0),
-	    opt(Is, Acc, St)
-    end;
-opt([{test,_,{f,L}=Lbl,_}=I|[{label,L}|_]=Is], Acc0, St0) ->
-    %% Similar to the above, except we have a fall-through rather than jump
-    %%    Test Label Ops
-    %%    label Label
-    case beam_utils:is_pure_test(I) of
-	false ->
-	    opt(Is, [I|Acc0], label_used(Lbl, St0));
-	true ->
-            {Acc,St} = opt_useless_loads(Acc0, L, St0),
 	    opt(Is, Acc, St)
     end;
 opt([{test,Test0,{f,L}=Lbl,Ops}=I|[{jump,To}|Is]=Is0], Acc, St) ->
@@ -385,51 +502,6 @@ normalize_replace([{From,To0}|Rest], Replace, Acc) ->
 normalize_replace([], _Replace, Acc) ->
     maps:from_list(Acc).
 
-%% After eliminating a test, it might happen, that a register was only used
-%% in this test. Let's check if that was the case and if it was so, we can
-%% eliminate the load into the register completely.
-opt_useless_loads([{block,_}|_]=Is, L, #st{index={lazy,FIs}}=St) ->
-    opt_useless_loads(Is, L, St#st{index=beam_utils:index_labels(FIs)});
-opt_useless_loads([{block,Block0}|Is], L, #st{index=Index}=St) ->
-    case opt_useless_block_loads(Block0, L, Index) of
-        [] ->
-            opt_useless_loads(Is, L, St);
-        [_|_]=Block ->
-            {[{block,Block}|Is],St}
-    end;
-%% After eliminating the test and useless blocks, it might happen,
-%% that the previous test could also be eliminated.
-%% It might be that the label was already marked as used, even if ultimately,
-%% it never will be - we can't do much about it at that point, though
-opt_useless_loads([{test,_,{f,L},_}=I|Is], L, St) ->
-    case beam_utils:is_pure_test(I) of
-        false ->
-            {[I|Is],St};
-        true ->
-            opt_useless_loads(Is, L, St)
-    end;
-opt_useless_loads(Is, _L, St) ->
-    {Is,St}.
-
-opt_useless_block_loads([{set,[Dst],_,_}=I|Is0], L, Index) ->
-    BlockJump = [{block,Is0},{jump,{f,L}}],
-    case beam_utils:is_killed(Dst, BlockJump, Index) of
-        true ->
-            %% The register is killed and not used, we can remove the load.
-            %% Remove any `put` instructions in case we just
-            %% removed a `put_tuple` instruction.
-            Is = dropwhile(fun({set,_,_,put}) -> true;
-                              (_) -> false
-                           end, Is0),
-            opt_useless_block_loads(Is, L, Index);
-        false ->
-            [I|opt_useless_block_loads(Is0, L, Index)]
-    end;
-opt_useless_block_loads([I|Is], L, Index) ->
-    [I|opt_useless_block_loads(Is, L, Index)];
-opt_useless_block_loads([], _L, _Index) ->
-    [].
-
 collect_labels(Is, Label, #st{entry=Entry,replace=Replace} = St) ->
     collect_labels_1(Is, Label, Entry, Replace, St).
 
@@ -556,52 +628,109 @@ drop_upto_label([{label,_}|_]=Is) -> Is;
 drop_upto_label([_|Is]) -> drop_upto_label(Is);
 drop_upto_label([]) -> [].
 
-%% ulbl(Instruction, UsedGbSet) -> UsedGbSet'
-%%  Update the gb_set UsedGbSet with any function-local labels
+%% unshare([Instruction]) -> [Instruction].
+%%  Replace a jump to a return sequence (a `return` instruction
+%%  optionally preced by a `deallocate` instruction) with the return
+%%  sequence. This always saves execution time and may also save code
+%%  space (depending on the architecture). Eliminating `jump`
+%%  instructions also gives beam_trim more opportunities to trim the
+%%  stack.
+
+unshare(Is) ->
+    Short = unshare_collect_short(Is, #{}),
+    unshare_short(Is, Short).
+
+unshare_collect_short([{label,L},return|Is], Map) ->
+    unshare_collect_short(Is, Map#{L=>[return]});
+unshare_collect_short([{label,L},{deallocate,_}=D,return|Is], Map) ->
+    %% `deallocate` and `return` are combined into one instruction by
+    %% the loader.
+    unshare_collect_short(Is, Map#{L=>[D,return]});
+unshare_collect_short([_|Is], Map) ->
+    unshare_collect_short(Is, Map);
+unshare_collect_short([], Map) -> Map.
+
+unshare_short([{jump,{f,F}}=I|Is], Map) ->
+    case Map of
+        #{F:=Seq} ->
+            Seq ++ unshare_short(Is, Map);
+        #{} ->
+            [I|unshare_short(Is, Map)]
+    end;
+unshare_short([I|Is], Map) ->
+    [I|unshare_short(Is, Map)];
+unshare_short([], _Map) -> [].
+
+%% ulbl(Instruction, UsedCerlSet) -> UsedCerlSet'
+%%  Update the cerl_set UsedCerlSet with any function-local labels
 %%  (i.e. not with labels in call instructions) referenced by
 %%  the instruction Instruction.
 %%
 %%  NOTE: This function does NOT look for labels inside blocks.
 
-ulbl({test,_,Fail,_}, Used) ->
-    mark_used(Fail, Used);
-ulbl({test,_,Fail,_,_,_}, Used) ->
-    mark_used(Fail, Used);
-ulbl({select,_,_,Fail,Vls}, Used) ->
-    mark_used_list(Vls, mark_used(Fail, Used));
-ulbl({'try',_,Lbl}, Used) ->
-    mark_used(Lbl, Used);
-ulbl({'catch',_,Lbl}, Used) ->
-    mark_used(Lbl, Used);
-ulbl({jump,Lbl}, Used) ->
-    mark_used(Lbl, Used);
-ulbl({loop_rec,Lbl,_}, Used) ->
-    mark_used(Lbl, Used);
-ulbl({loop_rec_end,Lbl}, Used) ->
-    mark_used(Lbl, Used);
-ulbl({wait,Lbl}, Used) ->
-    mark_used(Lbl, Used);
-ulbl({wait_timeout,Lbl,_To}, Used) ->
-    mark_used(Lbl, Used);
-ulbl({bif,_Name,Lbl,_As,_R}, Used) ->
-    mark_used(Lbl, Used);
-ulbl({gc_bif,_Name,Lbl,_Live,_As,_R}, Used) ->
-    mark_used(Lbl, Used);
-ulbl({bs_init,Lbl,_,_,_,_}, Used) ->
-    mark_used(Lbl, Used);
-ulbl({bs_put,Lbl,_,_}, Used) ->
-    mark_used(Lbl, Used);
-ulbl({put_map,Lbl,_Op,_Src,_Dst,_Live,_List}, Used) ->
-    mark_used(Lbl, Used);
-ulbl({get_map_elements,Lbl,_Src,_List}, Used) ->
-    mark_used(Lbl, Used);
-ulbl(_, Used) -> Used.
-
-mark_used({f,0}, Used) -> Used;
-mark_used({f,L}, Used) -> cerl_sets:add_element(L, Used).
-
-mark_used_list([{f,L}|T], Used) ->
-    mark_used_list(T, cerl_sets:add_element(L, Used));
-mark_used_list([_|T], Used) ->
-    mark_used_list(T, Used);
-mark_used_list([], Used) -> Used.
+ulbl(I, Used) ->
+    case instr_labels(I) of
+        [] ->
+            Used;
+        [Lbl] ->
+            cerl_sets:add_element(Lbl, Used);
+        [_|_]=L ->
+            ulbl_list(L, Used)
+    end.
+
+ulbl_list([L|Ls], Used) ->
+    ulbl_list(Ls, cerl_sets:add_element(L, Used));
+ulbl_list([], Used) -> Used.
+
+-spec instr_labels(Instruction) -> Labels when
+      Instruction :: instruction(),
+      Labels :: [beam_asm:label()].
+
+instr_labels({test,_,Fail,_}) ->
+    do_instr_labels(Fail);
+instr_labels({test,_,Fail,_,_,_}) ->
+    do_instr_labels(Fail);
+instr_labels({select,_,_,Fail,Vls}) ->
+    do_instr_labels_list(Vls, do_instr_labels(Fail));
+instr_labels({'try',_,Lbl}) ->
+    do_instr_labels(Lbl);
+instr_labels({'catch',_,Lbl}) ->
+    do_instr_labels(Lbl);
+instr_labels({jump,Lbl}) ->
+    do_instr_labels(Lbl);
+instr_labels({loop_rec,Lbl,_}) ->
+    do_instr_labels(Lbl);
+instr_labels({loop_rec_end,Lbl}) ->
+    do_instr_labels(Lbl);
+instr_labels({wait,Lbl}) ->
+    do_instr_labels(Lbl);
+instr_labels({wait_timeout,Lbl,_To}) ->
+    do_instr_labels(Lbl);
+instr_labels({bif,_Name,Lbl,_As,_R}) ->
+    do_instr_labels(Lbl);
+instr_labels({gc_bif,_Name,Lbl,_Live,_As,_R}) ->
+    do_instr_labels(Lbl);
+instr_labels({bs_init,Lbl,_,_,_,_}) ->
+    do_instr_labels(Lbl);
+instr_labels({bs_put,Lbl,_,_}) ->
+    do_instr_labels(Lbl);
+instr_labels({put_map,Lbl,_Op,_Src,_Dst,_Live,_List}) ->
+    do_instr_labels(Lbl);
+instr_labels({get_map_elements,Lbl,_Src,_List}) ->
+    do_instr_labels(Lbl);
+instr_labels({recv_mark,Lbl}) ->
+    do_instr_labels(Lbl);
+instr_labels({recv_set,Lbl}) ->
+    do_instr_labels(Lbl);
+instr_labels({fcheckerror,Lbl}) ->
+    do_instr_labels(Lbl);
+instr_labels(_) -> [].
+
+do_instr_labels({f,0}) -> [];
+do_instr_labels({f,F}) -> [F].
+
+do_instr_labels_list([{f,F}|T], Acc) ->
+    do_instr_labels_list(T, [F|Acc]);
+do_instr_labels_list([_|T], Acc) ->
+    do_instr_labels_list(T, Acc);
+do_instr_labels_list([], Acc) -> Acc.
diff --git a/lib/compiler/src/beam_kernel_to_ssa.erl b/lib/compiler/src/beam_kernel_to_ssa.erl
new file mode 100644
index 0000000000..df95749fb3
--- /dev/null
+++ b/lib/compiler/src/beam_kernel_to_ssa.erl
@@ -0,0 +1,1312 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2018. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+%% Purpose: Convert the Kernel Erlang format to the SSA format.
+
+-module(beam_kernel_to_ssa).
+
+%% The main interface.
+-export([module/2]).
+
+-import(lists, [append/1,duplicate/2,flatmap/2,foldl/3,
+                keysort/2,mapfoldl/3,map/2,member/2,
+                reverse/1,reverse/2,sort/1]).
+
+-include("v3_kernel.hrl").
+-include("beam_ssa.hrl").
+
+-type label() :: beam_ssa:label().
+
+%% Main codegen structure.
+-record(cg, {lcount=1 :: label(),               %Label counter
+             bfail=1 :: label(),
+             catch_label=none :: 'none' | label(),
+             vars=#{} :: map(),     %Defined variables.
+             break=0 :: label(),    %Break label
+             recv=0 :: label(),     %Receive label
+             ultimate_failure=0 :: label() %Label for ultimate match failure.
+            }).
+
+%% Internal records.
+-record(cg_break, {args :: [beam_ssa:value()],
+                   phi :: label()
+                  }).
+-record(cg_phi, {vars :: [beam_ssa:b_var()]
+                }).
+-record(cg_unreachable, {}).
+
+-spec module(#k_mdef{}, [compile:option()]) -> {'ok',#b_module{}}.
+
+module(#k_mdef{name=Mod,exports=Es,attributes=Attr,body=Forms}, _Opts) ->
+    Body = functions(Forms, Mod),
+    Module = #b_module{name=Mod,exports=Es,attributes=Attr,body=Body},
+    {ok,Module}.
+
+functions(Forms, Mod) ->
+    [function(F, Mod) || F <- Forms].
+
+function(#k_fdef{anno=Anno0,func=Name,arity=Arity,
+                 vars=As0,body=Kb}, Mod) ->
+    try
+        #k_match{} = Kb,                   %Assertion.
+
+        %% Generate the SSA form immediate format.
+        St0 = #cg{},
+        {As,St1} = new_ssa_vars(As0, St0),
+        {Asm,St} = cg_fun(Kb, St1),
+        Anno1 = line_anno(Anno0),
+        Anno = Anno1#{func_info=>{Mod,Name,Arity}},
+        #b_function{anno=Anno,args=As,bs=Asm,cnt=St#cg.lcount}
+    catch
+        Class:Error:Stack ->
+            io:fwrite("Function: ~w/~w\n", [Name,Arity]),
+            erlang:raise(Class, Error, Stack)
+    end.
+
+%% cg_fun([Lkexpr], [HeadVar], State) -> {[Ainstr],State}
+
+cg_fun(Ke, St0) ->
+    {UltimateFail,FailIs,St1} = make_failure(badarg, St0),
+    St2 = St1#cg{bfail=UltimateFail,ultimate_failure=UltimateFail},
+    {B,St} = cg(Ke, St2),
+    Asm = [{label,0}|B++FailIs],
+    finalize(Asm, St).
+
+make_failure(Reason, St0) ->
+    {Lbl,St1} = new_label(St0),
+    {Dst,St} = new_ssa_var('@ssa_ret', St1),
+    Is = [{label,Lbl},
+          #b_set{op=call,dst=Dst,
+                 args=[#b_remote{mod=#b_literal{val=erlang},
+                                 name=#b_literal{val=error},
+                                 arity=1},
+                       #b_literal{val=Reason}]},
+          #b_ret{arg=Dst}],
+    {Lbl,Is,St}.
+
+%% cg(Lkexpr, State) -> {[Ainstr],State}.
+%%  Generate code for a kexpr.
+
+cg(#k_match{body=M,ret=Rs}, St) ->
+    do_match_cg(M, Rs, St);
+cg(#k_guard_match{body=M,ret=Rs}, St) ->
+    do_match_cg(M, Rs, St);
+cg(#k_seq{arg=Arg,body=Body}, St0) ->
+    {ArgIs,St1} = cg(Arg, St0),
+    {BodyIs,St} = cg(Body, St1),
+    {ArgIs++BodyIs,St};
+cg(#k_call{anno=Le,op=Func,args=As,ret=Rs}, St) ->
+    call_cg(Func, As, Rs, Le, St);
+cg(#k_enter{anno=Le,op=Func,args=As}, St) ->
+    enter_cg(Func, As, Le, St);
+cg(#k_bif{anno=Le}=Bif, St) ->
+    bif_cg(Bif, Le, St);
+cg(#k_try{arg=Ta,vars=Vs,body=Tb,evars=Evs,handler=Th,ret=Rs}, St) ->
+    try_cg(Ta, Vs, Tb, Evs, Th, Rs, St);
+cg(#k_try_enter{arg=Ta,vars=Vs,body=Tb,evars=Evs,handler=Th}, St) ->
+    try_enter_cg(Ta, Vs, Tb, Evs, Th, St);
+cg(#k_catch{body=Cb,ret=[R]}, St) ->
+    do_catch_cg(Cb, R, St);
+cg(#k_receive{anno=Le,timeout=Te,var=Rvar,body=Rm,action=Tes,ret=Rs}, St) ->
+    recv_loop_cg(Te, Rvar, Rm, Tes, Rs, Le, St);
+cg(#k_receive_next{}, #cg{recv=Recv}=St) ->
+    Is = [#b_set{op=recv_next},make_uncond_branch(Recv)],
+    {Is,St};
+cg(#k_receive_accept{}, St) ->
+    Remove = #b_set{op=remove_message},
+    {[Remove],St};
+cg(#k_put{anno=Le,arg=Con,ret=Var}, St) ->
+    put_cg(Var, Con, Le, St);
+cg(#k_return{args=[Ret0]}, St) ->
+    Ret = ssa_arg(Ret0, St),
+    {[#b_ret{arg=Ret}],St};
+cg(#k_break{args=Bs}, #cg{break=Br}=St) ->
+    Args = ssa_args(Bs, St),
+    {[#cg_break{args=Args,phi=Br}],St};
+cg(#k_guard_break{args=Bs}, St) ->
+    cg(#k_break{args=Bs}, St).
+
+%% match_cg(Matc, [Ret], State) -> {[Ainstr],State}.
+%%  Generate code for a match.
+
+do_match_cg(M, Rs, St0) ->
+    {B,St1} = new_label(St0),
+    {Mis,St2} = match_cg(M, St1#cg.bfail, St1#cg{break=B}),
+    {BreakVars,St} = new_ssa_vars(Rs, St2),
+    {Mis ++ [{label,B},#cg_phi{vars=BreakVars}],
+     St#cg{bfail=St0#cg.bfail,break=St1#cg.break}}.
+
+%% match_cg(Match, Fail, State) -> {[Ainstr],State}.
+%%  Generate code for a match tree.
+
+match_cg(#k_alt{first=F,then=S}, Fail, St0) ->
+    {Tf,St1} = new_label(St0),
+    {Fis,St2} = match_cg(F, Tf, St1),
+    {Sis,St3} = match_cg(S, Fail, St2),
+    {Fis ++ [{label,Tf}] ++ Sis,St3};
+match_cg(#k_select{var=#k_var{}=V,types=Scs}, Fail, St) ->
+    match_fmf(fun (S, F, Sta) ->
+                      select_cg(S, V, F, Fail, Sta)
+              end, Fail, St, Scs);
+match_cg(#k_guard{clauses=Gcs}, Fail, St) ->
+    match_fmf(fun (G, F, Sta) ->
+                      guard_clause_cg(G, F, Sta)
+              end, Fail, St, Gcs);
+match_cg(Ke, _Fail, St0) ->
+    cg(Ke, St0).
+
+%% select_cg(Sclause, V, TypeFail, ValueFail, State) -> {Is,State}.
+%%  Selecting type and value needs two failure labels, TypeFail is the
+%%  label to jump to of the next type test when this type fails, and
+%%  ValueFail is the label when this type is correct but the value is
+%%  wrong.  These are different as in the second case there is no need
+%%  to try the next type, it will always fail.
+
+select_cg(#k_type_clause{type=k_binary,values=[S]}, Var, Tf, Vf, St) ->
+    select_binary(S, Var, Tf, Vf, St);
+select_cg(#k_type_clause{type=k_bin_seg,values=Vs}, Var, Tf, _Vf, St) ->
+    select_bin_segs(Vs, Var, Tf, St);
+select_cg(#k_type_clause{type=k_bin_int,values=Vs}, Var, Tf, _Vf, St) ->
+    select_bin_segs(Vs, Var, Tf, St);
+select_cg(#k_type_clause{type=k_bin_end,values=[S]}, Var, Tf, _Vf, St) ->
+    select_bin_end(S, Var, Tf, St);
+select_cg(#k_type_clause{type=k_map,values=Vs}, Var, Tf, Vf, St) ->
+    select_map(Vs, Var, Tf, Vf, St);
+select_cg(#k_type_clause{type=k_cons,values=[S]}, Var, Tf, Vf, St) ->
+    select_cons(S, Var, Tf, Vf, St);
+select_cg(#k_type_clause{type=k_nil,values=[S]}, Var, Tf, Vf, St) ->
+    select_nil(S, Var, Tf, Vf, St);
+select_cg(#k_type_clause{type=k_literal,values=Vs}, Var, Tf, Vf, St) ->
+    select_literal(Vs, Var, Tf, Vf, St);
+select_cg(#k_type_clause{type=Type,values=Scs}, Var, Tf, Vf, St0) ->
+    {Vis,St1} =
+        mapfoldl(fun (S, Sta) ->
+                         {Val,Is,Stb} = select_val(S, Var, Vf, Sta),
+                         {{Is,[Val]},Stb}
+                 end, St0, Scs),
+    OptVls = combine(lists:sort(combine(Vis))),
+    {Vls,Sis,St2} = select_labels(OptVls, St1, [], []),
+    Arg = ssa_arg(Var, St2),
+    {Is,St} = select_val_cg(Type, Arg, Vls, Tf, Vf, Sis, St2),
+    {Is,St}.
+
+select_val_cg(k_tuple, Tuple, Vls, Tf, Vf, Sis, St0) ->
+    {Is0,St1} = make_cond_branch({bif,is_tuple}, [Tuple], Tf, St0),
+    {Arity,St2} = new_ssa_var('@ssa_arity', St1),
+    GetArity = #b_set{op={bif,tuple_size},dst=Arity,args=[Tuple]},
+    {Is,St} = select_val_cg(k_int, Arity, Vls, Vf, Vf, Sis, St2),
+    {Is0++[GetArity]++Is,St};
+select_val_cg(Type, R, Vls, Tf, Vf, Sis, St0) ->
+    {TypeIs,St1} = if
+                       Tf =:= Vf ->
+                           %% The type and value failure labels are the same;
+                           %% we don't need a type test.
+                           {[],St0};
+                       true ->
+                           %% Different labels for type failure and
+                           %% label failure; we need a type test.
+                           Test = select_type_test(Type),
+                           make_cond_branch(Test, [R], Tf, St0)
+                   end,
+    case Vls of
+        [{Val,Succ}] ->
+            {Is,St} = make_cond({bif,'=:='}, [R,Val], Vf, Succ, St1),
+            {TypeIs++Is++Sis,St};
+        [_|_] ->
+            {TypeIs++[#b_switch{arg=R,fail=Vf,list=Vls}|Sis],St1}
+    end.
+
+select_type_test(k_int) -> {bif,is_integer};
+select_type_test(k_atom) -> {bif,is_atom};
+select_type_test(k_float) -> {bif,is_float}.
+
+combine([{Is,Vs1},{Is,Vs2}|Vis]) -> combine([{Is,Vs1 ++ Vs2}|Vis]);
+combine([V|Vis]) -> [V|combine(Vis)];
+combine([]) -> [].
+
+select_labels([{Is,Vs}|Vis], St0, Vls, Sis) ->
+    {Lbl,St1} = new_label(St0),
+    select_labels(Vis, St1, add_vls(Vs, Lbl, Vls), [[{label,Lbl}|Is]|Sis]);
+select_labels([], St, Vls, Sis) ->
+    {Vls,append(Sis),St}.
+
+add_vls([V|Vs], Lbl, Acc) ->
+    add_vls(Vs, Lbl, [{#b_literal{val=V},Lbl}|Acc]);
+add_vls([], _, Acc) -> Acc.
+
+select_literal(S, V, Tf, Vf, St) ->
+    Src = ssa_arg(V, St),
+    F = fun(ValClause, Fail, St0) ->
+                {Val,ValIs,St1} = select_val(ValClause, V, Vf, St0),
+                Args = [Src,#b_literal{val=Val}],
+                {Is,St2} = make_cond_branch({bif,'=:='}, Args, Fail, St1),
+                {Is++ValIs,St2}
+        end,
+    match_fmf(F, Tf, St, S).
+
+select_cons(#k_val_clause{val=#k_cons{hd=Hd,tl=Tl},body=B},
+            V, Tf, Vf, St0) ->
+    Es = [Hd,Tl],
+    {Eis,St1} = select_extract_cons(V, Es, St0),
+    {Bis,St2} = match_cg(B, Vf, St1),
+    Src = ssa_arg(V, St2),
+    {Is,St} = make_cond_branch(is_nonempty_list, [Src], Tf, St2),
+    {Is ++ Eis ++ Bis,St}.
+
+select_nil(#k_val_clause{val=#k_nil{},body=B}, V, Tf, Vf, St0) ->
+    {Bis,St1} = match_cg(B, Vf, St0),
+    Src = ssa_arg(V, St1),
+    {Is,St} = make_cond_branch({bif,'=:='}, [Src,#b_literal{val=[]}], Tf, St1),
+    {Is ++ Bis,St}.
+
+select_binary(#k_val_clause{val=#k_binary{segs=#k_var{name=Ctx0}},body=B},
+              #k_var{}=Src, Tf, Vf, St0) ->
+    {Ctx,St1} = new_ssa_var(Ctx0, St0),
+    {Bis0,St2} = match_cg(B, Vf, St1),
+    {TestIs,St} = make_cond_branch(succeeded, [Ctx], Tf, St2),
+    Bis1 = [#b_set{op=bs_start_match,dst=Ctx,
+                   args=[ssa_arg(Src, St)]}] ++ TestIs ++ Bis0,
+    Bis = finish_bs_matching(Bis1),
+    {Bis,St}.
+
+finish_bs_matching([#b_set{op=bs_match,
+                           args=[#b_literal{val=string},Ctx,#b_literal{val=BinList}]}=Set|Is])
+  when is_list(BinList) ->
+    I = Set#b_set{args=[#b_literal{val=string},Ctx,
+                        #b_literal{val=list_to_bitstring(BinList)}]},
+    finish_bs_matching([I|Is]);
+finish_bs_matching([I|Is]) ->
+    [I|finish_bs_matching(Is)];
+finish_bs_matching([]) -> [].
+
+make_cond(Cond, Args, Fail, Succ, St0) ->
+    {Bool,St} = new_ssa_var('@ssa_bool', St0),
+    Bif = #b_set{op=Cond,dst=Bool,args=Args},
+    Br = #b_br{bool=Bool,succ=Succ,fail=Fail},
+    {[Bif,Br],St}.
+
+make_cond_branch(Cond, Args, Fail, St0) ->
+    {Bool,St1} = new_ssa_var('@ssa_bool', St0),
+    {Succ,St} = new_label(St1),
+    Bif = #b_set{op=Cond,dst=Bool,args=Args},
+    Br = #b_br{bool=Bool,succ=Succ,fail=Fail},
+    {[Bif,Br,{label,Succ}],St}.
+
+make_uncond_branch(Fail) ->
+    #b_br{bool=#b_literal{val=true},succ=Fail,fail=Fail}.
+
+%% Instructions for selection of binary segments.
+
+select_bin_segs(Scs, Ivar, Tf, St) ->
+    match_fmf(fun(S, Fail, Sta) ->
+                      select_bin_seg(S, Ivar, Fail, Sta)
+              end, Tf, St, Scs).
+
+select_bin_seg(#k_val_clause{val=#k_bin_seg{size=Size,unit=U,type=T,
+                                            seg=Seg,flags=Fs,next=Next},
+                             body=B,anno=Anno},
+               #k_var{}=Src, Fail, St0) ->
+    LineAnno = line_anno(Anno),
+    Ctx = get_context(Src, St0),
+    {Mis,St1} = select_extract_bin(Next, Size, U, T, Fs, Fail,
+                                   Ctx, LineAnno, St0),
+    {Extracted,St2} = new_ssa_var(Seg#k_var.name, St1),
+    {Bis,St} = match_cg(B, Fail, St2),
+    BsGet = #b_set{op=bs_extract,dst=Extracted,args=[ssa_arg(Next, St)]},
+    Is = Mis ++ [BsGet] ++ Bis,
+    {Is,St};
+select_bin_seg(#k_val_clause{val=#k_bin_int{size=Sz,unit=U,flags=Fs,
+                                            val=Val,next=Next},
+                             body=B},
+               #k_var{}=Src, Fail, St0) ->
+    Ctx = get_context(Src, St0),
+    {Mis,St1} = select_extract_int(Next, Val, Sz, U, Fs, Fail,
+                                     Ctx, St0),
+    {Bis,St} = match_cg(B, Fail, St1),
+    Is = case Mis ++ Bis of
+             [#b_set{op=bs_match,args=[#b_literal{val=string},OtherCtx1,Bin1]},
+              #b_set{op=succeeded,dst=Bool1},
+              #b_br{bool=Bool1,succ=Succ,fail=Fail},
+              {label,Succ},
+              #b_set{op=bs_match,dst=Dst,args=[#b_literal{val=string},_OtherCtx2,Bin2]}|
+              [#b_set{op=succeeded,dst=Bool2},
+               #b_br{bool=Bool2,fail=Fail}|_]=Is0] ->
+                 %% We used to do this optimization later, but it
+                 %% turns out that in huge functions with many
+                 %% string matching instructions, it's a huge win
+                 %% to do the combination now. To avoid copying the
+                 %% binary data again and again, we'll combine bitstrings
+                 %% in a list and convert all of it to a bitstring later.
+                 {#b_literal{val=B1},#b_literal{val=B2}} = {Bin1,Bin2},
+                 Bin = #b_literal{val=[B1,B2]},
+                 Set = #b_set{op=bs_match,dst=Dst,args=[#b_literal{val=string},OtherCtx1,Bin]},
+                 [Set|Is0];
+             Is0 ->
+                 Is0
+         end,
+    {Is,St}.
+
+get_context(#k_var{}=Var, St) ->
+    ssa_arg(Var, St).
+
+select_bin_end(#k_val_clause{val=#k_bin_end{},body=B}, Src, Tf, St0) ->
+    Ctx = get_context(Src, St0),
+    {Bis,St1} = match_cg(B, Tf, St0),
+    {TestIs,St} = make_cond_branch(bs_test_tail, [Ctx,#b_literal{val=0}], Tf, St1),
+    Is = TestIs++Bis,
+    {Is,St}.
+
+select_extract_bin(#k_var{name=Hd}, Size0, Unit, Type, Flags, Vf,
+                   Ctx, Anno, St0) ->
+    {Dst,St1} = new_ssa_var(Hd, St0),
+    Size = ssa_arg(Size0, St0),
+    build_bs_instr(Anno, Type, Vf, Ctx, Size, Unit, Flags, Dst, St1).
+
+select_extract_int(#k_var{name=Tl}, 0, #k_int{val=0}, _U, _Fs, _Vf,
+                   Ctx, St0) ->
+    St = set_ssa_var(Tl, Ctx, St0),
+    {[],St};
+select_extract_int(#k_var{name=Tl}, Val, #k_int{val=Sz}, U, Fs, Vf,
+                   Ctx, St0) ->
+    {Dst,St1} = new_ssa_var(Tl, St0),
+    Bits = U*Sz,
+    Bin = case member(big, Fs) of
+              true ->
+                  <<Val:Bits>>;
+              false ->
+                  true = member(little, Fs),	%Assertion.
+                  <<Val:Bits/little>>
+          end,
+    Bits = bit_size(Bin),			%Assertion.
+    {TestIs,St} = make_cond_branch(succeeded, [Dst], Vf, St1),
+    Set = #b_set{op=bs_match,dst=Dst,
+                 args=[#b_literal{val=string},Ctx,#b_literal{val=Bin}]},
+    {[Set|TestIs],St}.
+
+build_bs_instr(Anno, Type, Fail, Ctx, Size, Unit0, Flags0, Dst, St0) ->
+    Unit = #b_literal{val=Unit0},
+    Flags = #b_literal{val=Flags0},
+    NeedSize = bs_need_size(Type),
+    TypeArg = #b_literal{val=Type},
+    Get = case NeedSize of
+              true ->
+                  #b_set{anno=Anno,op=bs_match,dst=Dst,
+                         args=[TypeArg,Ctx,Flags,Size,Unit]};
+              false ->
+                  #b_set{anno=Anno,op=bs_match,dst=Dst,
+                         args=[TypeArg,Ctx,Flags]}
+          end,
+    {Is,St} = make_cond_branch(succeeded, [Dst], Fail, St0),
+    {[Get|Is],St}.
+
+select_val(#k_val_clause{val=#k_tuple{es=Es},body=B}, V, Vf, St0) ->
+    #k{us=Used} = k_get_anno(B),
+    {Eis,St1} = select_extract_tuple(V, Es, Used, St0),
+    {Bis,St2} = match_cg(B, Vf, St1),
+    {length(Es),Eis ++ Bis,St2};
+select_val(#k_val_clause{val=Val0,body=B}, _V, Vf, St0) ->
+    Val = case Val0 of
+              #k_atom{val=Lit} -> Lit;
+              #k_float{val=Lit} -> Lit;
+              #k_int{val=Lit} -> Lit;
+              #k_literal{val=Lit} -> Lit
+          end,
+    {Bis,St1} = match_cg(B, Vf, St0),
+    {Val,Bis,St1}.
+
+%% select_extract_tuple(Src, [V], State) -> {[E],State}.
+%%  Extract tuple elements, but only if they are actually used.
+%%
+%%  Not extracting tuple elements that are not used is an
+%%  optimization for compile time and memory use during compilation.
+%%  It is probably worthwhile because it is common to extract only a
+%%  few elements from a huge record.
+
+select_extract_tuple(Src, Vs, Used, St0) ->
+    Tuple = ssa_arg(Src, St0),
+    F = fun (#k_var{name=V}, {Elem,S0}) ->
+                case member(V, Used) of
+                    true ->
+                        Args = [Tuple,#b_literal{val=Elem}],
+                        {Dst,S} = new_ssa_var(V, S0),
+                        Get = #b_set{op=get_tuple_element,dst=Dst,args=Args},
+                        {[Get],{Elem+1,S}};
+                    false ->
+                        {[],{Elem+1,S0}}
+                end
+        end,
+    {Es,{_,St}} = flatmapfoldl(F, {0,St0}, Vs),
+    {Es,St}.
+
+select_map(Scs, V, Tf, Vf, St0) ->
+    MapSrc = ssa_arg(V, St0),
+    {Is,St1} =
+        match_fmf(fun(#k_val_clause{val=#k_map{op=exact,es=Es},
+                                    body=B}, Fail, St1) ->
+                          select_map_val(V, Es, B, Fail, St1)
+                  end, Vf, St0, Scs),
+    {TestIs,St} = make_cond_branch({bif,is_map}, [MapSrc], Tf, St1),
+    {TestIs++Is,St}.
+
+select_map_val(V, Es, B, Fail, St0) ->
+    {Eis,St1} = select_extract_map(Es, V, Fail, St0),
+    {Bis,St2} = match_cg(B, Fail, St1),
+    {Eis++Bis,St2}.
+
+select_extract_map([P|Ps], Src, Fail, St0) ->
+    MapSrc = ssa_arg(Src, St0),
+    #k_map_pair{key=Key0,val=#k_var{name=Dst0}} = P,
+    Key = ssa_arg(Key0, St0),
+    {Dst,St1} = new_ssa_var(Dst0, St0),
+    Set = #b_set{op=get_map_element,dst=Dst,args=[MapSrc,Key]},
+    {TestIs,St2} = make_cond_branch(succeeded, [Dst], Fail, St1),
+    {Is,St} = select_extract_map(Ps, Src, Fail, St2),
+    {[Set|TestIs]++Is,St};
+select_extract_map([], _, _, St) ->
+    {[],St}.
+
+select_extract_cons(Src0, [#k_var{name=Hd},#k_var{name=Tl}], St0) ->
+    Src = ssa_arg(Src0, St0),
+    {HdDst,St1} = new_ssa_var(Hd, St0),
+    {TlDst,St2} = new_ssa_var(Tl, St1),
+    GetHd = #b_set{op=get_hd,dst=HdDst,args=[Src]},
+    GetTl = #b_set{op=get_tl,dst=TlDst,args=[Src]},
+    {[GetHd,GetTl],St2}.
+
+guard_clause_cg(#k_guard_clause{guard=G,body=B}, Fail, St0) ->
+    {Gis,St1} = guard_cg(G, Fail, St0),
+    {Bis,St} = match_cg(B, Fail, St1),
+    {Gis ++ Bis,St}.
+
+%% guard_cg(Guard, Fail, State) -> {[Ainstr],State}.
+%%  A guard is a boolean expression of tests.  Tests return true or
+%%  false.  A fault in a test causes the test to return false.  Tests
+%%  never return the boolean, instead we generate jump code to go to
+%%  the correct exit point.  Primops and tests all go to the next
+%%  instruction on success or jump to a failure label.
+
+guard_cg(#k_protected{arg=Ts,ret=Rs,inner=Inner}, Fail, St) ->
+    protected_cg(Ts, Rs, Inner, Fail, St);
+guard_cg(#k_test{op=Test0,args=As,inverted=Inverted}, Fail, St0) ->
+    #k_remote{mod=#k_atom{val=erlang},name=#k_atom{val=Test}} = Test0,
+    test_cg(Test, Inverted, As, Fail, St0);
+guard_cg(#k_seq{arg=Arg,body=Body}, Fail, St0) ->
+    {ArgIs,St1} = guard_cg(Arg, Fail, St0),
+    {BodyIs,St} = guard_cg(Body, Fail, St1),
+    {ArgIs++BodyIs,St};
+guard_cg(G, _Fail, St) ->
+    cg(G, St).
+
+test_cg('=/=', Inverted, As, Fail, St) ->
+    test_cg('=:=', not Inverted, As, Fail, St);
+test_cg('/=', Inverted, As, Fail, St) ->
+    test_cg('==', not Inverted, As, Fail, St);
+test_cg(Test, Inverted, As0, Fail, St0) ->
+    As = ssa_args(As0, St0),
+    case {Test,ssa_args(As0, St0)} of
+        {is_record,[Tuple,#b_literal{val=Atom}=Tag,#b_literal{val=Int}=Arity]}
+          when is_atom(Atom), is_integer(Int) ->
+            test_is_record_cg(Inverted, Fail, Tuple, Tag, Arity, St0);
+        {_,As} ->
+            {Bool,St1} = new_ssa_var('@ssa_bool', St0),
+            {Succ,St} = new_label(St1),
+            Bif = #b_set{op={bif,Test},dst=Bool,args=As},
+            Br = case Inverted of
+                     false -> #b_br{bool=Bool,succ=Succ,fail=Fail};
+                     true -> #b_br{bool=Bool,succ=Fail,fail=Succ}
+                 end,
+            {[Bif,Br,{label,Succ}],St}
+    end.
+
+test_is_record_cg(false, Fail, Tuple, TagVal, ArityVal, St0) ->
+    {Arity,St1} = new_ssa_var('@ssa_arity', St0),
+    {Tag,St2} = new_ssa_var('@ssa_tag', St1),
+    {Is0,St3} = make_cond_branch({bif,is_tuple}, [Tuple], Fail, St2),
+    GetArity = #b_set{op={bif,tuple_size},dst=Arity,args=[Tuple]},
+    {Is1,St4} = make_cond_branch({bif,'=:='}, [Arity,ArityVal], Fail, St3),
+    GetTag = #b_set{op=get_tuple_element,dst=Tag,
+                    args=[Tuple,#b_literal{val=0}]},
+    {Is2,St} = make_cond_branch({bif,'=:='}, [Tag,TagVal], Fail, St4),
+    Is = Is0 ++ [GetArity] ++ Is1 ++ [GetTag] ++ Is2,
+    {Is,St};
+test_is_record_cg(true, Fail, Tuple, TagVal, ArityVal, St0) ->
+    {Succ,St1} = new_label(St0),
+    {Arity,St2} = new_ssa_var('@ssa_arity', St1),
+    {Tag,St3} = new_ssa_var('@ssa_tag', St2),
+    {Is0,St4} = make_cond_branch({bif,is_tuple}, [Tuple], Succ, St3),
+    GetArity = #b_set{op={bif,tuple_size},dst=Arity,args=[Tuple]},
+    {Is1,St5} = make_cond_branch({bif,'=:='}, [Arity,ArityVal], Succ, St4),
+    GetTag = #b_set{op=get_tuple_element,dst=Tag,
+                    args=[Tuple,#b_literal{val=0}]},
+    {Is2,St} = make_cond_branch({bif,'=:='}, [Tag,TagVal], Succ, St5),
+    Is3 = [make_uncond_branch(Fail),{label,Succ}],
+    Is = Is0 ++ [GetArity] ++ Is1 ++ [GetTag] ++ Is2 ++ Is3,
+    {Is,St}.
+
+%% protected_cg([Kexpr], [Ret], Fail, St) -> {[Ainstr],St}.
+%%  Do a protected.  Protecteds without return values are just done
+%%  for effect, the return value is not checked, success passes on to
+%%  the next instruction and failure jumps to Fail.  If there are
+%%  return values then these must be set to 'false' on failure,
+%%  control always passes to the next instruction.
+
+protected_cg(Ts, [], _, Fail, St0) ->
+    %% Protect these calls, revert when done.
+    {Tis,St1} = guard_cg(Ts, Fail, St0#cg{bfail=Fail}),
+    {Tis,St1#cg{bfail=St0#cg.bfail}};
+protected_cg(Ts, Rs, Inner0, _Fail, St0) ->
+    {Pfail,St1} = new_label(St0),
+    {Br,St2} = new_label(St1),
+    Prot = duplicate(length(Rs), #b_literal{val=false}),
+    {Tis,St3} = guard_cg(Ts, Pfail, St2#cg{break=Pfail,bfail=Pfail}),
+    Inner = ssa_args(Inner0, St3),
+    {BreakVars,St} = new_ssa_vars(Rs, St3),
+    Is = Tis ++ [#cg_break{args=Inner,phi=Br},
+                 {label,Pfail},#cg_break{args=Prot,phi=Br},
+                 {label,Br},#cg_phi{vars=BreakVars}],
+    {Is,St#cg{break=St0#cg.break,bfail=St0#cg.bfail}}.
+
+%% match_fmf(Fun, LastFail, State, [Clause]) -> {Is,State}.
+%%  This is a special flatmapfoldl for match code gen where we
+%%  generate a "failure" label for each clause. The last clause uses
+%%  an externally generated failure label, LastFail.  N.B. We do not
+%%  know or care how the failure labels are used.
+
+match_fmf(F, LastFail, St, [H]) ->
+    F(H, LastFail, St);
+match_fmf(F, LastFail, St0, [H|T]) ->
+    {Fail,St1} = new_label(St0),
+    {R,St2} = F(H, Fail, St1),
+    {Rs,St3} = match_fmf(F, LastFail, St2, T),
+    {R ++ [{label,Fail}] ++ Rs,St3}.
+
+%% fail_label(State) -> {Where,FailureLabel}.
+%%       Where = guard | no_catch | in_catch
+%%  Return an indication of which part of a function code is
+%%  being generated for and the appropriate failure label to
+%%  use.
+%%
+%%  Where has the following meaning:
+%%
+%%     guard     - Inside a guard.
+%%     no_catch  - In a function body, not in the scope of
+%%                 a try/catch or catch.
+%%     in_catch  - In the scope of a try/catch or catch.
+
+fail_label(#cg{catch_label=Catch,bfail=Fail,ultimate_failure=Ult}) ->
+    if
+        Fail =/= Ult ->
+            {guard,Fail};
+        Catch =:= none ->
+            {no_catch,Fail};
+        is_integer(Catch) ->
+            {in_catch,Catch}
+    end.
+
+%% bif_fail_label(State) -> FailureLabel.
+%%  Return the appropriate failure label for a guard BIF call or
+%%  primop that fails.
+
+bif_fail_label(St) ->
+    {_,Fail} = fail_label(St),
+    Fail.
+
+%% call_cg(Func, [Arg], [Ret], Le, State) ->
+%%      {[Ainstr],State}.
+%% enter_cg(Func, [Arg], Le, St) -> {[Ainstr],St}.
+%%  Generate code for call and enter.
+
+call_cg(Func, As, [], Le, St) ->
+    call_cg(Func, As, [#k_var{name='@ssa_ignored'}], Le, St);
+call_cg(Func0, As, [#k_var{name=R}|MoreRs]=Rs, Le, St0) ->
+    case fail_label(St0) of
+        {guard,Fail} ->
+            %% Inside a guard. The only allowed function call is to
+            %% erlang:error/1,2. We will generate a branch to the
+            %% failure branch.
+            #k_remote{mod=#k_atom{val=erlang},
+                      name=#k_atom{val=error}} = Func0, %Assertion.
+            [#k_var{name=DestVar}] = Rs,
+            St = set_ssa_var(DestVar, #b_literal{val=unused}, St0),
+            {[make_uncond_branch(Fail),#cg_unreachable{}],St};
+        {Catch,Fail} ->
+            %% Ordinary function call in a function body.
+            Args = ssa_args(As, St0),
+            {Ret,St1} = new_ssa_var(R, St0),
+            Func = call_target(Func0, Args, St0),
+            Call = #b_set{anno=line_anno(Le),op=call,dst=Ret,args=[Func|Args]},
+
+            %% If this is a call to erlang:error(), MoreRs could be a
+            %% nonempty list of variables that each need a value.
+            St2 = foldl(fun(#k_var{name=Dummy}, S) ->
+                                set_ssa_var(Dummy, #b_literal{val=unused}, S)
+                        end, St1, MoreRs),
+            case Catch of
+                no_catch ->
+                    {[Call],St2};
+                in_catch ->
+                    {TestIs,St} = make_cond_branch(succeeded, [Ret], Fail, St2),
+                    {[Call|TestIs],St}
+            end
+    end.
+
+enter_cg(Func0, As0, Le, St0) ->
+    Anno = line_anno(Le),
+    Func = call_target(Func0, As0, St0),
+    As = ssa_args(As0, St0),
+    {Ret,St} = new_ssa_var('@ssa_ret', St0),
+    Call = #b_set{anno=Anno,op=call,dst=Ret,args=[Func|As]},
+    {[Call,#b_ret{arg=Ret}],St}.
+
+call_target(Func, As, St) ->
+    Arity = length(As),
+    case Func of
+        #k_remote{mod=Mod0,name=Name0} ->
+            Mod = ssa_arg(Mod0, St),
+            Name = ssa_arg(Name0, St),
+            #b_remote{mod=Mod,name=Name,arity=Arity};
+        #k_local{name=Name} when is_atom(Name) ->
+            #b_local{name=#b_literal{val=Name},arity=Arity};
+        #k_var{}=Var ->
+            ssa_arg(Var, St)
+    end.
+
+%% bif_cg(#k_bif{}, Le,State) -> {[Ainstr],State}.
+%%  Generate code for a guard BIF or primop.
+
+bif_cg(#k_bif{op=#k_internal{name=Name},args=As,ret=Rs}, Le, St) ->
+    internal_cg(Name, As, Rs, Le, St);
+bif_cg(#k_bif{op=#k_remote{mod=#k_atom{val=erlang},name=#k_atom{val=Name}},
+              args=As,ret=Rs}, Le, St) ->
+    bif_cg(Name, As, Rs, Le, St).
+
+%% internal_cg(Bif, [Arg], [Ret], Le, State) ->
+%%      {[Ainstr],State}.
+
+internal_cg(make_fun, [Name0,Arity0|As], Rs, _Le, St0) ->
+    #k_atom{val=Name} = Name0,
+    #k_int{val=Arity} = Arity0,
+    [#k_var{name=Dst0}] = Rs,
+    {Dst,St} = new_ssa_var(Dst0, St0),
+    Args = ssa_args(As, St),
+    Local = #b_local{name=#b_literal{val=Name},arity=Arity},
+    MakeFun = #b_set{op=make_fun,dst=Dst,args=[Local|Args]},
+    {[MakeFun],St};
+internal_cg(bs_init_writable=I, As, [#k_var{name=Dst0}], _Le, St0) ->
+    %% This behaves like a function call.
+    {Dst,St} = new_ssa_var(Dst0, St0),
+    Args = ssa_args(As, St),
+    Set = #b_set{op=I,dst=Dst,args=Args},
+    {[Set],St};
+internal_cg(build_stacktrace=I, As, [#k_var{name=Dst0}], _Le, St0) ->
+    {Dst,St} = new_ssa_var(Dst0, St0),
+    Args = ssa_args(As, St),
+    Set = #b_set{op=I,dst=Dst,args=Args},
+    {[Set],St};
+internal_cg(raise, As, [#k_var{name=Dst0}], _Le, St0) ->
+    Args = ssa_args(As, St0),
+    {Dst,St} = new_ssa_var(Dst0, St0),
+    Resume = #b_set{op=resume,dst=Dst,args=Args},
+    case St of
+        #cg{catch_label=none} ->
+            {[Resume],St};
+        #cg{catch_label=Catch} when is_integer(Catch) ->
+            Is = [Resume,make_uncond_branch(Catch),#cg_unreachable{}],
+            {Is,St}
+    end;
+internal_cg(raw_raise=I, As, [#k_var{name=Dst0}], _Le, St0) ->
+    %% This behaves like a function call.
+    {Dst,St} = new_ssa_var(Dst0, St0),
+    Args = ssa_args(As, St),
+    Set = #b_set{op=I,dst=Dst,args=Args},
+    {[Set],St}.
+
+bif_cg(Bif, As0, [#k_var{name=Dst0}], Le, St0) ->
+    {Dst,St1} = new_ssa_var(Dst0, St0),
+    case {Bif,ssa_args(As0, St0)} of
+        {is_record,[Tuple,#b_literal{val=Atom}=Tag,
+                    #b_literal{val=Int}=Arity]}
+          when is_atom(Atom), is_integer(Int) ->
+            bif_is_record_cg(Dst, Tuple, Tag, Arity, St1);
+        {_,As} ->
+            I = #b_set{anno=line_anno(Le),op={bif,Bif},dst=Dst,args=As},
+            case erl_bifs:is_safe(erlang, Bif, length(As)) of
+                false ->
+                    Fail = bif_fail_label(St1),
+                    {Is,St} = make_cond_branch(succeeded, [Dst], Fail, St1),
+                    {[I|Is],St};
+                true->
+                    {[I],St1}
+            end
+        end.
+
+bif_is_record_cg(Dst, Tuple, TagVal, ArityVal, St0) ->
+    {Arity,St1} = new_ssa_var('@ssa_arity', St0),
+    {Tag,St2} = new_ssa_var('@ssa_tag', St1),
+    {Phi,St3} = new_label(St2),
+    {False,St4} = new_label(St3),
+    {Is0,St5} = make_cond_branch({bif,is_tuple}, [Tuple], False, St4),
+    GetArity = #b_set{op={bif,tuple_size},dst=Arity,args=[Tuple]},
+    {Is1,St6} = make_cond_branch({bif,'=:='}, [Arity,ArityVal], False, St5),
+    GetTag = #b_set{op=get_tuple_element,dst=Tag,
+                    args=[Tuple,#b_literal{val=0}]},
+    {Is2,St} = make_cond_branch({bif,'=:='}, [Tag,TagVal], False, St6),
+    Is3 = [#cg_break{args=[#b_literal{val=true}],phi=Phi},
+           {label,False},
+           #cg_break{args=[#b_literal{val=false}],phi=Phi},
+           {label,Phi},
+           #cg_phi{vars=[Dst]}],
+    Is = Is0 ++ [GetArity] ++ Is1 ++ [GetTag] ++ Is2 ++ Is3,
+    {Is,St}.
+
+%% recv_loop_cg(TimeOut, ReceiveVar, ReceiveMatch, TimeOutExprs,
+%%              [Ret], Le, St) -> {[Ainstr],St}.
+
+recv_loop_cg(Te, Rvar, Rm, Tes, Rs, Le, St0) ->
+    %% Get labels.
+    {Rl,St1} = new_label(St0),
+    {Tl,St2} = new_label(St1),
+    {Bl,St3} = new_label(St2),
+    St4 = St3#cg{break=Bl,recv=Rl},
+    {Ris,St5} = cg_recv_mesg(Rvar, Rm, Tl, Le, St4),
+    {Wis,St6} = cg_recv_wait(Te, Tes, St5),
+    {BreakVars,St} = new_ssa_vars(Rs, St6),
+    {Ris ++ [{label,Tl}] ++ Wis ++
+         [{label,Bl},#cg_phi{vars=BreakVars}],
+     St#cg{break=St0#cg.break,recv=St0#cg.recv}}.
+
+%% cg_recv_mesg( ) -> {[Ainstr],St}.
+
+cg_recv_mesg(#k_var{name=R}, Rm, Tl, Le, St0) ->
+    {Dst,St1} = new_ssa_var(R, St0),
+    {Mis,St2} = match_cg(Rm, none, St1),
+    RecvLbl = St1#cg.recv,
+    {TestIs,St} = make_cond_branch(succeeded, [Dst], Tl, St2),
+    Is = [#b_br{anno=line_anno(Le),bool=#b_literal{val=true},
+                succ=RecvLbl,fail=RecvLbl},
+          {label,RecvLbl},
+          #b_set{op=peek_message,dst=Dst}|TestIs],
+    {Is++Mis,St}.
+
+%% cg_recv_wait(Te, Tes, St) -> {[Ainstr],St}.
+
+cg_recv_wait(#k_int{val=0}, Es, St0) ->
+    {Tis,St} = cg(Es, St0),
+    {[#b_set{op=timeout}|Tis],St};
+cg_recv_wait(Te, Es, St0) ->
+    {Tis,St1} = cg(Es, St0),
+    Args = [ssa_arg(Te, St1)],
+    {WaitDst,St2} = new_ssa_var('@ssa_wait', St1),
+    {WaitIs,St} = make_cond_branch(succeeded, [WaitDst], St1#cg.recv, St2),
+    %% Infinite timeout will be optimized later.
+    Is = [#b_set{op=wait_timeout,dst=WaitDst,args=Args}] ++ WaitIs ++
+        [#b_set{op=timeout}] ++ Tis,
+    {Is,St}.
+
+%% try_cg(TryBlock, [BodyVar], TryBody, [ExcpVar], TryHandler, [Ret], St) ->
+%%         {[Ainstr],St}.
+
+try_cg(Ta, Vs, Tb, Evs, Th, Rs, St0) ->
+    {B,St1} = new_label(St0),			%Body label
+    {H,St2} = new_label(St1),			%Handler label
+    {E,St3} = new_label(St2),			%End label
+    {Next,St4} = new_label(St3),
+    {TryTag,St5} = new_ssa_var('@ssa_catch_tag', St4),
+    {SsaVs,St6} = new_ssa_vars(Vs, St5),
+    {SsaEvs,St7} = new_ssa_vars(Evs, St6),
+    {Ais,St8} = cg(Ta, St7#cg{break=B,catch_label=H}),
+    St9 = St8#cg{break=E,catch_label=St7#cg.catch_label},
+    {Bis,St10} = cg(Tb, St9),
+    {His,St11} = cg(Th, St10),
+    {BreakVars,St12} = new_ssa_vars(Rs, St11),
+    {CatchedAgg,St} = new_ssa_var('@ssa_agg', St12),
+    ExtractVs = extract_vars(SsaEvs, CatchedAgg, 0),
+    KillTryTag = #b_set{op=kill_try_tag,args=[TryTag]},
+    Args = [#b_literal{val='try'},TryTag],
+    Handler = [{label,H},
+               #b_set{op=landingpad,dst=CatchedAgg,args=Args}] ++
+        ExtractVs ++ [KillTryTag],
+    {[#b_set{op=new_try_tag,dst=TryTag,args=[#b_literal{val='try'}]},
+      #b_br{bool=TryTag,succ=Next,fail=H},
+      {label,Next}] ++ Ais ++
+         [{label,B},#cg_phi{vars=SsaVs},KillTryTag] ++ Bis ++
+         Handler ++ His ++
+         [{label,E},#cg_phi{vars=BreakVars}],
+     St#cg{break=St0#cg.break}}.
+
+try_enter_cg(Ta, Vs, Tb, Evs, Th, St0) ->
+    {B,St1} = new_label(St0),			%Body label
+    {H,St2} = new_label(St1),			%Handler label
+    {Next,St3} = new_label(St2),
+    {TryTag,St4} = new_ssa_var('@ssa_catch_tag', St3),
+    {SsaVs,St5} = new_ssa_vars(Vs, St4),
+    {SsaEvs,St6} = new_ssa_vars(Evs, St5),
+    {Ais,St7} = cg(Ta, St6#cg{break=B,catch_label=H}),
+    St8 = St7#cg{catch_label=St6#cg.catch_label},
+    {Bis,St9} = cg(Tb, St8),
+    {His,St10} = cg(Th, St9),
+    {CatchedAgg,St} = new_ssa_var('@ssa_agg', St10),
+    ExtractVs = extract_vars(SsaEvs, CatchedAgg, 0),
+    KillTryTag = #b_set{op=kill_try_tag,args=[TryTag]},
+    Args = [#b_literal{val='try'},TryTag],
+    Handler = [{label,H},
+               #b_set{op=landingpad,dst=CatchedAgg,args=Args}] ++
+        ExtractVs ++ [KillTryTag],
+    {[#b_set{op=new_try_tag,dst=TryTag,args=[#b_literal{val='try'}]},
+      #b_br{bool=TryTag,succ=Next,fail=H},
+      {label,Next}] ++  Ais ++
+         [{label,B},#cg_phi{vars=SsaVs},KillTryTag] ++ Bis ++
+         Handler ++ His,
+     St#cg{break=St0#cg.break}}.
+
+extract_vars([V|Vs], Agg, N) ->
+    I = #b_set{op=extract,dst=V,args=[Agg,#b_literal{val=N}]},
+    [I|extract_vars(Vs, Agg, N+1)];
+extract_vars([], _, _) -> [].
+
+%% do_catch_cg(CatchBlock, Ret, St) -> {[Ainstr],St}.
+
+do_catch_cg(Block, #k_var{name=R}, St0) ->
+    {B,St1} = new_label(St0),
+    {Next,St2} = new_label(St1),
+    {H,St3} = new_label(St2),
+    {CatchReg,St4} = new_ssa_var('@ssa_catch_tag', St3),
+    {Dst,St5} = new_ssa_var(R, St4),
+    {Succ,St6} = new_label(St5),
+    {Cis,St7} = cg(Block, St6#cg{break=Succ,catch_label=H}),
+    {CatchedVal,St8} = new_ssa_var('@catched_val', St7),
+    {SuccVal,St9} = new_ssa_var('@success_val', St8),
+    {CatchedAgg,St10} = new_ssa_var('@ssa_agg', St9),
+    {CatchEndVal,St} = new_ssa_var('@catch_end_val', St10),
+    Args = [#b_literal{val='catch'},CatchReg],
+    {[#b_set{op=new_try_tag,dst=CatchReg,args=[#b_literal{val='catch'}]},
+      #b_br{bool=CatchReg,succ=Next,fail=H},
+      {label,Next}] ++ Cis ++
+         [{label,H},
+          #b_set{op=landingpad,dst=CatchedAgg,args=Args},
+          #b_set{op=extract,dst=CatchedVal,
+                 args=[CatchedAgg,#b_literal{val=0}]},
+          #cg_break{args=[CatchedVal],phi=B},
+          {label,Succ},
+          #cg_phi{vars=[SuccVal]},
+          #cg_break{args=[SuccVal],phi=B},
+          {label,B},#cg_phi{vars=[CatchEndVal]},
+          #b_set{op=catch_end,dst=Dst,args=[CatchReg,CatchEndVal]}],
+     St#cg{break=St1#cg.break,catch_label=St1#cg.catch_label}}.
+
+%% put_cg([Var], Constr, Le, Vdb, Bef, St) -> {[Ainstr],St}.
+%%  Generate code for constructing terms.
+
+put_cg([#k_var{name=R}], #k_cons{hd=Hd,tl=Tl}, _Le, St0) ->
+    Args = ssa_args([Hd,Tl], St0),
+    {Dst,St} = new_ssa_var(R, St0),
+    PutList = #b_set{op=put_list,dst=Dst,args=Args},
+    {[PutList],St};
+put_cg([#k_var{name=R}], #k_tuple{es=Es}, _Le, St0) ->
+    {Ret,St} = new_ssa_var(R, St0),
+    Args = ssa_args(Es, St),
+    PutTuple = #b_set{op=put_tuple,dst=Ret,args=Args},
+    {[PutTuple],St};
+put_cg([#k_var{name=R}], #k_binary{segs=Segs}, Le, St0) ->
+    Fail = bif_fail_label(St0),
+    {Dst,St1} = new_ssa_var(R, St0),
+    cg_binary(Dst, Segs, Fail, Le, St1);
+put_cg([#k_var{name=R}], #k_map{op=Op,var=Map,
+                                es=[#k_map_pair{key=#k_var{}=K,val=V}]},
+       Le, St0) ->
+    %% Map: single variable key.
+    SrcMap = ssa_arg(Map, St0),
+    LineAnno = line_anno(Le),
+    List = [ssa_arg(K, St0),ssa_arg(V, St0)],
+    {Dst,St1} = new_ssa_var(R, St0),
+    {Is,St} = put_cg_map(LineAnno, Op, SrcMap, Dst, List, St1),
+    {Is,St};
+put_cg([#k_var{name=R}], #k_map{op=Op,var=Map,es=Es}, Le, St0) ->
+    %% Map: one or more literal keys.
+    [] = [Var || #k_map_pair{key=#k_var{}=Var} <- Es], %Assertion
+    SrcMap = ssa_arg(Map, St0),
+    LineAnno = line_anno(Le),
+    List = flatmap(fun(#k_map_pair{key=K,val=V}) ->
+                           [ssa_arg(K, St0),ssa_arg(V, St0)]
+                   end, Es),
+    {Dst,St1} = new_ssa_var(R, St0),
+    {Is,St} = put_cg_map(LineAnno, Op, SrcMap, Dst, List, St1),
+    {Is,St};
+put_cg([#k_var{name=R}], Con0, _Le, St0) ->
+    %% Create an alias for a variable or literal.
+    Con = ssa_arg(Con0, St0),
+    St = set_ssa_var(R, Con, St0),
+    {[],St}.
+
+put_cg_map(LineAnno, Op, SrcMap, Dst, List, St0) ->
+    Fail = bif_fail_label(St0),
+    Args = [#b_literal{val=Op},SrcMap|List],
+    PutMap = #b_set{anno=LineAnno,op=put_map,dst=Dst,args=Args},
+    if
+        Op =:= assoc ->
+            {[PutMap],St0};
+        true ->
+            {Is,St} = make_cond_branch(succeeded, [Dst], Fail, St0),
+            {[PutMap|Is],St}
+    end.
+
+%%%
+%%% Code generation for constructing binaries.
+%%%
+
+cg_binary(Dst, Segs0, Fail, Le, St0) ->
+    {PutCode0,SzCalc0,St1} = cg_bin_put(Segs0, Fail, St0),
+    LineAnno = line_anno(Le),
+    Anno = Le#k.a,
+    case PutCode0 of
+        [#b_set{op=bs_put,dst=Bool,args=[_,_,Src,#b_literal{val=all}|_]},
+         #b_br{bool=Bool},
+         {label,_}|_] ->
+            #k_bin_seg{unit=Unit0,next=Segs} = Segs0,
+            Unit = #b_literal{val=Unit0},
+            {PutCode,SzCalc1,St2} = cg_bin_put(Segs, Fail, St1),
+            {_,SzVar,SzCode0,St3} = cg_size_calc(1, SzCalc1, Fail, St2),
+            SzCode = cg_bin_anno(SzCode0, LineAnno),
+            Args = case member(single_use, Anno) of
+                       true ->
+                           [#b_literal{val=private_append},Src,SzVar,Unit];
+                       false ->
+                           [#b_literal{val=append},Src,SzVar,Unit]
+                   end,
+            BsInit = #b_set{anno=LineAnno,op=bs_init,dst=Dst,args=Args},
+            {TestIs,St} = make_cond_branch(succeeded, [Dst], Fail, St3),
+            {SzCode ++ [BsInit] ++ TestIs ++ PutCode,St};
+        [#b_set{op=bs_put}|_] ->
+            {Unit,SzVar,SzCode0,St2} = cg_size_calc(8, SzCalc0, Fail, St1),
+            SzCode = cg_bin_anno(SzCode0, LineAnno),
+            Args = [#b_literal{val=new},SzVar,Unit],
+            BsInit = #b_set{anno=LineAnno,op=bs_init,dst=Dst,args=Args},
+            {TestIs,St} = make_cond_branch(succeeded, [Dst], Fail, St2),
+            {SzCode ++ [BsInit] ++ TestIs ++ PutCode0,St}
+    end.
+
+cg_bin_anno([Set|Sets], Anno) ->
+    [Set#b_set{anno=Anno}|Sets];
+cg_bin_anno([], _) -> [].
+
+%% cg_size_calc(PreferredUnit, SzCalc, Fail, St0) ->
+%%         {ActualUnit,SizeVariable,SizeCode,St}.
+%%  Generate size calculation code.
+
+cg_size_calc(Unit, error, _Fail, St) ->
+    {#b_literal{val=Unit},#b_literal{val=badarg},[],St};
+cg_size_calc(8, [{1,_}|_]=SzCalc, Fail, St) ->
+    cg_size_calc(1, SzCalc, Fail, St);
+cg_size_calc(8, SzCalc, Fail, St0) ->
+    {Var,Pre,St} = cg_size_calc_1(SzCalc, Fail, St0),
+    {#b_literal{val=8},Var,Pre,St};
+cg_size_calc(1, SzCalc0, Fail, St0) ->
+    SzCalc = map(fun({8,#b_literal{val=Size}}) ->
+                         {1,#b_literal{val=8*Size}};
+                    ({8,{{bif,byte_size},Src}}) ->
+                         {1,{{bif,bit_size},Src}};
+                    ({8,{_,_}=UtfCalc}) ->
+                         {1,{'*',#b_literal{val=8},UtfCalc}};
+                    ({_,_}=Pair) ->
+                         Pair
+                 end, SzCalc0),
+    {Var,Pre,St} = cg_size_calc_1(SzCalc, Fail, St0),
+    {#b_literal{val=1},Var,Pre,St}.
+
+cg_size_calc_1(SzCalc, Fail, St0) ->
+    cg_size_calc_2(SzCalc, #b_literal{val=0}, Fail, St0).
+
+cg_size_calc_2([{_,{'*',Unit,{_,_}=Bif}}|T], Sum0, Fail, St0) ->
+    {Sum1,Pre0,St1} = cg_size_calc_2(T, Sum0, Fail, St0),
+    {BifDst,Pre1,St2} = cg_size_bif(Bif, Fail, St1),
+    {Sum,Pre2,St} = cg_size_add(Sum1, BifDst, Unit, Fail, St2),
+    {Sum,Pre0++Pre1++Pre2,St};
+cg_size_calc_2([{_,#b_literal{}=Sz}|T], Sum0, Fail, St0) ->
+    {Sum1,Pre0,St1} = cg_size_calc_2(T, Sum0, Fail, St0),
+    {Sum,Pre,St} = cg_size_add(Sum1, Sz, #b_literal{val=1}, Fail, St1),
+    {Sum,Pre0++Pre,St};
+cg_size_calc_2([{_,#b_var{}=Sz}|T], Sum0, Fail, St0) ->
+    {Sum1,Pre0,St1} = cg_size_calc_2(T, Sum0, Fail, St0),
+    {Sum,Pre,St} = cg_size_add(Sum1, Sz, #b_literal{val=1}, Fail, St1),
+    {Sum,Pre0++Pre,St};
+cg_size_calc_2([{_,{_,_}=Bif}|T], Sum0, Fail, St0) ->
+    {Sum1,Pre0,St1} = cg_size_calc_2(T, Sum0, Fail, St0),
+    {BifDst,Pre1,St2} = cg_size_bif(Bif, Fail, St1),
+    {Sum,Pre2,St} = cg_size_add(Sum1, BifDst, #b_literal{val=1}, Fail, St2),
+    {Sum,Pre0++Pre1++Pre2,St};
+cg_size_calc_2([], Sum, _Fail, St) ->
+    {Sum,[],St}.
+
+cg_size_bif(#b_var{}=Var, _Fail, St) ->
+    {Var,[],St};
+cg_size_bif({Name,Src}, Fail, St0) ->
+    {Dst,St1} = new_ssa_var('@ssa_bif', St0),
+    Bif = #b_set{op=Name,dst=Dst,args=[Src]},
+    {TestIs,St} = make_cond_branch(succeeded, [Dst], Fail, St1),
+    {Dst,[Bif|TestIs],St}.
+
+cg_size_add(#b_literal{val=0}, Val, #b_literal{val=1}, _Fail, St) ->
+    {Val,[],St};
+cg_size_add(A, B, Unit, Fail, St0) ->
+    {Dst,St1} = new_ssa_var('@ssa_sum', St0),
+    {TestIs,St} = make_cond_branch(succeeded, [Dst], Fail, St1),
+    BsAdd = #b_set{op=bs_add,dst=Dst,args=[A,B,Unit]},
+    {Dst,[BsAdd|TestIs],St}.
+
+cg_bin_put(Seg, Fail, St) ->
+    cg_bin_put_1(Seg, Fail, [], [], St).
+
+cg_bin_put_1(#k_bin_seg{size=Size0,unit=U,type=T,flags=Fs,seg=Src0,next=Next},
+           Fail, Acc, SzCalcAcc, St0) ->
+    [Src,Size] = ssa_args([Src0,Size0], St0),
+    NeedSize = bs_need_size(T),
+    TypeArg = #b_literal{val=T},
+    Flags = #b_literal{val=Fs},
+    Unit = #b_literal{val=U},
+    Args = case NeedSize of
+               true -> [TypeArg,Flags,Src,Size,Unit];
+               false -> [TypeArg,Flags,Src]
+           end,
+    {Is,St} = make_cond_branch(bs_put, Args, Fail, St0),
+    SzCalc = bin_size_calc(T, Src, Size, U),
+    cg_bin_put_1(Next, Fail, reverse(Is, Acc), [SzCalc|SzCalcAcc], St);
+cg_bin_put_1(#k_bin_end{}, _, Acc, SzCalcAcc, St) ->
+    SzCalc = fold_size_calc(SzCalcAcc, 0, []),
+    {reverse(Acc),SzCalc,St}.
+
+bs_need_size(utf8) -> false;
+bs_need_size(utf16) -> false;
+bs_need_size(utf32) -> false;
+bs_need_size(_) -> true.
+
+bin_size_calc(utf8, Src, _Size, _Unit) ->
+    {8,{bs_utf8_size,Src}};
+bin_size_calc(utf16, Src, _Size, _Unit) ->
+    {8,{bs_utf16_size,Src}};
+bin_size_calc(utf32, _Src, _Size, _Unit) ->
+    {8,#b_literal{val=4}};
+bin_size_calc(binary, Src, #b_literal{val=all}, Unit) ->
+    case Unit rem 8 of
+        0 -> {8,{{bif,byte_size},Src}};
+        _ -> {1,{{bif,bit_size},Src}}
+    end;
+bin_size_calc(_Type, _Src, Size, Unit) ->
+    {Unit,Size}.
+
+fold_size_calc([{Unit,#b_literal{val=Size}}|T], Bits, Acc) ->
+    if
+        is_integer(Size) ->
+            fold_size_calc(T, Bits + Unit*Size, Acc);
+        true ->
+            error
+    end;
+fold_size_calc([{U,#b_var{}}=H|T], Bits, Acc) when U =:= 1; U =:= 8 ->
+    fold_size_calc(T, Bits, [H|Acc]);
+fold_size_calc([{U,#b_var{}=Var}|T], Bits, Acc) ->
+    fold_size_calc(T, Bits, [{1,{'*',#b_literal{val=U},Var}}|Acc]);
+fold_size_calc([{_,_}=H|T], Bits, Acc) ->
+    fold_size_calc(T, Bits, [H|Acc]);
+fold_size_calc([], Bits, Acc) ->
+    Bytes = Bits div 8,
+    RemBits = Bits rem 8,
+    Sizes = sort([{1,#b_literal{val=RemBits}},{8,#b_literal{val=Bytes}}|Acc]),
+    [Pair || {_,Sz}=Pair <- Sizes, Sz =/= #b_literal{val=0}].
+
+%%%
+%%% Utilities for creating the SSA types.
+%%%
+
+ssa_args(As, St) ->
+    [ssa_arg(A, St) || A <- As].
+
+ssa_arg(#k_var{name=V}, #cg{vars=Vars}) -> maps:get(V, Vars);
+ssa_arg(#k_literal{val=V}, _) -> #b_literal{val=V};
+ssa_arg(#k_atom{val=V}, _) -> #b_literal{val=V};
+ssa_arg(#k_float{val=V}, _) -> #b_literal{val=V};
+ssa_arg(#k_int{val=V}, _) -> #b_literal{val=V};
+ssa_arg(#k_nil{}, _) -> #b_literal{val=[]}.
+
+new_ssa_vars(Vs, St) ->
+    mapfoldl(fun(#k_var{name=V}, S) ->
+                     new_ssa_var(V, S)
+             end, St, Vs).
+
+new_ssa_var(VarBase, #cg{lcount=Uniq,vars=Vars}=St0)
+  when is_atom(VarBase); is_integer(VarBase) ->
+    case Vars of
+        #{VarBase:=_} ->
+            Var = #b_var{name={VarBase,Uniq}},
+            St = St0#cg{lcount=Uniq+1,vars=Vars#{VarBase=>Var}},
+            {Var,St};
+        #{} ->
+            Var = #b_var{name=VarBase},
+            St = St0#cg{vars=Vars#{VarBase=>Var}},
+            {Var,St}
+    end.
+
+set_ssa_var(VarBase, Val, #cg{vars=Vars}=St)
+  when is_atom(VarBase); is_integer(VarBase) ->
+    St#cg{vars=Vars#{VarBase=>Val}}.
+
+%% new_label(St) -> {L,St}.
+
+new_label(#cg{lcount=Next}=St) ->
+    {Next,St#cg{lcount=Next+1}}.
+
+%% line_anno(Le) -> #{} | #{location:={File,Line}}.
+%%  Create a location annotation, containing information about the
+%%  current filename and line number.  The annotation should be
+%%  included in any operation that could cause an exception.
+
+line_anno(#k{a=Anno}) ->
+    line_anno_1(Anno).
+
+line_anno_1([Line,{file,Name}]) when is_integer(Line) ->
+    line_anno_2(Name, Line);
+line_anno_1([_|_]=A) ->
+    {Name,Line} = find_loc(A, no_file, 0),
+    line_anno_2(Name, Line);
+line_anno_1([]) ->
+    #{}.
+
+line_anno_2(no_file, _) ->
+    #{};
+line_anno_2(_, 0) ->
+    %% Missing line number or line number 0.
+    #{};
+line_anno_2(Name, Line) ->
+    #{location=>{Name,Line}}.
+
+find_loc([Line|T], File, _) when is_integer(Line) ->
+    find_loc(T, File, Line);
+find_loc([{file,File}|T], _, Line) ->
+    find_loc(T, File, Line);
+find_loc([_|T], File, Line) ->
+    find_loc(T, File, Line);
+find_loc([], File, Line) -> {File,Line}.
+
+flatmapfoldl(F, Accu0, [Hd|Tail]) ->
+    {R,Accu1} = F(Hd, Accu0),
+    {Rs,Accu2} = flatmapfoldl(F, Accu1, Tail),
+    {R++Rs,Accu2};
+flatmapfoldl(_, Accu, []) -> {[],Accu}.
+
+%%%
+%%% Finalize the code.
+%%%
+
+finalize(Asm0, St0) ->
+    Asm1 = fix_phis(Asm0),
+    {Asm,St} = fix_sets(Asm1, [], St0),
+    {build_map(Asm),St}.
+
+fix_phis(Is) ->
+    fix_phis_1(Is, none, #{}).
+
+fix_phis_1([{label,L},#cg_phi{vars=[]}=Phi|Is0], _Lbl, Map0) ->
+    case maps:is_key(L, Map0) of
+        false ->
+            %% No #cg_break{} references this label. Nothing else can
+            %% reference it, so it can be safely be removed.
+            {Is,Map} = drop_upto_label(Is0, Map0),
+            fix_phis_1(Is, none, Map);
+        true ->
+            %% There is a break referencing this label; probably caused
+            %% by a try/catch whose return value is ignored.
+            [{label,L}|fix_phis_1([Phi|Is0], L, Map0)]
+    end;
+fix_phis_1([{label,L}=I|Is], _Lbl, Map) ->
+    [I|fix_phis_1(Is, L, Map)];
+fix_phis_1([#cg_unreachable{}|Is0], _Lbl, Map0) ->
+    {Is,Map} = drop_upto_label(Is0, Map0),
+    fix_phis_1(Is, none, Map);
+fix_phis_1([#cg_break{args=Args,phi=Target}|Is], Lbl, Map) when is_integer(Lbl) ->
+    Pairs1 = case Map of
+                 #{Target:=Pairs0} -> Pairs0;
+                 #{} -> []
+             end,
+    Pairs = [[{Arg,Lbl} || Arg <- Args]|Pairs1],
+    I = make_uncond_branch(Target),
+    [I|fix_phis_1(Is, none, Map#{Target=>Pairs})];
+fix_phis_1([#cg_phi{vars=Vars}|Is0], Lbl, Map0) ->
+    Pairs = maps:get(Lbl, Map0),
+    Map1 = maps:remove(Lbl, Map0),
+    case gen_phis(Vars, Pairs) of
+        [#b_set{op=phi,args=[]}] ->
+            {Is,Map} = drop_upto_label(Is0, Map1),
+            Ret = #b_ret{arg=#b_literal{val=unreachable}},
+            [Ret|fix_phis_1(Is, none, Map)];
+        Phis ->
+            Phis ++ fix_phis_1(Is0, Lbl, Map1)
+    end;
+fix_phis_1([I|Is], Lbl, Map) ->
+    [I|fix_phis_1(Is, Lbl, Map)];
+fix_phis_1([], _, Map) ->
+    [] = maps:to_list(Map),                     %Assertion.
+    [].
+
+gen_phis([V|Vs], Preds0) ->
+    {Pairs,Preds} = collect_preds(Preds0, [], []),
+    [#b_set{op=phi,dst=V,args=Pairs}|gen_phis(Vs, Preds)];
+gen_phis([], _) -> [].
+
+collect_preds([[First|Rest]|T], ColAcc, RestAcc) ->
+    collect_preds(T, [First|ColAcc], [Rest|RestAcc]);
+collect_preds([], ColAcc, RestAcc) ->
+    {keysort(2, ColAcc),RestAcc}.
+
+fix_sets([#b_set{dst=none}=Set|Is], Acc, St0) ->
+    {Dst,St} = new_ssa_var('@ssa_ignored', St0),
+    I = Set#b_set{dst=Dst},
+    fix_sets(Is, [I|Acc], St);
+fix_sets([I|Is], Acc, St) ->
+    fix_sets(Is, [I|Acc], St);
+fix_sets([], Acc, St) ->
+    {reverse(Acc),St}.
+
+build_map(Is) ->
+    Blocks = build_graph_1(Is, [], []),
+    maps:from_list(Blocks).
+
+build_graph_1([{label,L}|Is], Lbls, []) ->
+    build_graph_1(Is, [L|Lbls], []);
+build_graph_1([{label,L}|Is], Lbls, [_|_]=BlockAcc) ->
+    make_blocks(Lbls, BlockAcc) ++ build_graph_1(Is, [L], []);
+build_graph_1([I|Is], Lbls, BlockAcc) ->
+    build_graph_1(Is, Lbls, [I|BlockAcc]);
+build_graph_1([], Lbls, BlockAcc) ->
+    make_blocks(Lbls, BlockAcc).
+
+make_blocks(Lbls, [Last|Is0]) ->
+    Is = reverse(Is0),
+    Block = #b_blk{is=Is,last=Last},
+    [{L,Block} || L <- Lbls].
+
+drop_upto_label([{label,_}|_]=Is, Map) ->
+    {Is,Map};
+drop_upto_label([#cg_break{phi=Target}|Is], Map) ->
+    Pairs = case Map of
+                #{Target:=Pairs0} -> Pairs0;
+                #{} -> []
+            end,
+    drop_upto_label(Is, Map#{Target=>Pairs});
+drop_upto_label([_|Is], Map) ->
+    drop_upto_label(Is, Map).
+
+k_get_anno(Thing) -> element(2, Thing).
diff --git a/lib/compiler/src/beam_listing.erl b/lib/compiler/src/beam_listing.erl
index 518b958794..6121593b11 100644
--- a/lib/compiler/src/beam_listing.erl
+++ b/lib/compiler/src/beam_listing.erl
@@ -23,6 +23,7 @@
 
 -include("core_parse.hrl").
 -include("v3_kernel.hrl").
+-include("beam_ssa.hrl").
 -include("beam_disasm.hrl").
 
 -import(lists, [foreach/2]).
@@ -41,6 +42,12 @@ module(File, #k_mdef{}=Kern) ->
     %% This is a kernel module.
     io:put_chars(File, v3_kernel_pp:format(Kern));
     %%io:put_chars(File, io_lib:format("~p~n", [Kern]));
+module(File, #b_module{name=Mod,exports=Exp,attributes=Attr,body=Fs}) ->
+    io:format(File, "module ~p.\n", [Mod]),
+    io:format(File, "exports ~p.\n", [Exp]),
+    io:format(File, "attributes ~p.\n\n", [Attr]),
+    PP = [beam_ssa_pp:format_function(F) || F <- Fs],
+    io:put_chars(File, lists:join($\n, PP));
 module(Stream, {Mod,Exp,Attr,Code,NumLabels}) ->
     %% This is output from v3_codegen.
     io:format(Stream, "{module, ~p}.  %% version = ~w\n",
@@ -59,7 +66,7 @@ module(Stream, [_|_]=Fs) ->
     foreach(fun (F) -> io:format(Stream, "~p.\n", [F]) end, Fs).
 
 format_asm([{label,L}|Is]) ->
-    ["  {label,",integer_to_list(L),"}.\n"|format_asm(Is)];
+    [io_lib:format("  {label,~p}.\n", [L])|format_asm(Is)];
 format_asm([I|Is]) ->
     [io_lib:format("    ~p", [I]),".\n"|format_asm(Is)];
 format_asm([]) -> [].
diff --git a/lib/compiler/src/beam_peep.erl b/lib/compiler/src/beam_peep.erl
index 2b8dd40e29..5730e9704e 100644
--- a/lib/compiler/src/beam_peep.erl
+++ b/lib/compiler/src/beam_peep.erl
@@ -94,38 +94,43 @@ peep([{gc_bif,_,_,_,_,Dst}=I|Is], SeenTests0, Acc) ->
 peep([{jump,{f,L}},{label,L}=I|Is], _, Acc) ->
     %% Sometimes beam_jump has missed this optimization.
     peep(Is, gb_sets:empty(), [I|Acc]);
-peep([{select,Op,R,F,Vls0}|Is], SeenTests0, Acc0) ->
+peep([{select,select_val,R,F,Vls0}|Is], SeenTests0, Acc0) ->
     case prune_redundant_values(Vls0, F) of
 	[] ->
 	    %% No values left. Must convert to plain jump.
 	    I = {jump,F},
 	    peep([I|Is], gb_sets:empty(), Acc0);
-        [{atom,_}=Value,Lbl] when Op =:= select_val ->
-            %% Single value left. Convert to regular test and pop redundant tests.
+        [{atom,_}=Value,Lbl] ->
+            %% Single value left. Convert to regular test.
             Is1 = [{test,is_eq_exact,F,[R,Value]},{jump,Lbl}|Is],
-            case Acc0 of
-                [{test,is_atom,F,[R]}|Acc] ->
-                    peep(Is1, SeenTests0, Acc);
-                _ ->
-                    peep(Is1, SeenTests0, Acc0)
-            end;
-        [{integer,_}=Value,Lbl] when Op =:= select_val ->
-            %% Single value left. Convert to regular test and pop redundant tests.
+            peep(Is1, SeenTests0, Acc0);
+        [{integer,_}=Value,Lbl] ->
+            %% Single value left. Convert to regular test.
             Is1 = [{test,is_eq_exact,F,[R,Value]},{jump,Lbl}|Is],
-            case Acc0 of
-                [{test,is_integer,F,[R]}|Acc] ->
-                    peep(Is1, SeenTests0, Acc);
-                _ ->
-                    peep(Is1, SeenTests0, Acc0)
-            end;
-        [Arity,Lbl] when Op =:= select_tuple_arity ->
-            %% Single value left. Convert to regular test
-            Is1 = [{test,test_arity,F,[R,Arity]},{jump,Lbl}|Is],
+            peep(Is1, SeenTests0, Acc0);
+	[{atom,B1},Lbl,{atom,B2},Lbl] when B1 =:= not B2 ->
+            %% Replace with is_boolean test.
+            Is1 = [{test,is_boolean,F,[R]},{jump,Lbl}|Is],
             peep(Is1, SeenTests0, Acc0);
 	[_|_]=Vls ->
-	    I = {select,Op,R,F,Vls},
+	    I = {select,select_val,R,F,Vls},
 	    peep(Is, gb_sets:empty(), [I|Acc0])
     end;
+peep([{get_map_elements,Fail,Src,List}=I|Is], _SeenTests, Acc0) ->
+    SeenTests = gb_sets:empty(),
+    case simplify_get_map_elements(Fail, Src, List, Acc0) of
+        {ok,Acc} ->
+            peep(Is, SeenTests, Acc);
+        error ->
+            peep(Is, SeenTests, [I|Acc0])
+    end;
+peep([{test,has_map_fields,Fail,Ops}=I|Is], SeenTests, Acc0) ->
+    case simplify_has_map_fields(Fail, Ops, Acc0) of
+        {ok,Acc} ->
+            peep(Is, SeenTests, Acc);
+        error ->
+            peep(Is, SeenTests, [I|Acc0])
+    end;
 peep([{test,Op,_,Ops}=I|Is], SeenTests0, Acc) ->
     case beam_utils:is_pure_test(I) of
 	false ->
@@ -176,3 +181,39 @@ prune_redundant_values([_Val,F|Vls], F) ->
 prune_redundant_values([Val,Lbl|Vls], F) ->
     [Val,Lbl|prune_redundant_values(Vls, F)];
 prune_redundant_values([], _) -> [].
+
+simplify_get_map_elements(Fail, Src, {list,[Key,Dst]},
+                          [{get_map_elements,Fail,Src,{list,List1}}|Acc]) ->
+    case are_keys_literals([Key]) andalso are_keys_literals(List1) of
+        true ->
+            case member(Key, List1) of
+                true ->
+                    %% The key is already in the other list. That is
+                    %% very unusual, because there are optimizations to get
+                    %% rid of duplicate keys. Therefore, don't try to
+                    %% do anything smart here; just keep the
+                    %% get_map_elements instructions separate.
+                    error;
+                false ->
+                    List = [Key,Dst|List1],
+                    {ok,[{get_map_elements,Fail,Src,{list,List}}|Acc]}
+            end;
+        false ->
+            error
+    end;
+simplify_get_map_elements(_, _, _, _) -> error.
+
+simplify_has_map_fields(Fail, [Src|Keys0],
+                        [{test,has_map_fields,Fail,[Src|Keys1]}|Acc]) ->
+    case are_keys_literals(Keys0) andalso are_keys_literals(Keys1) of
+        true ->
+            Keys = Keys0 ++ Keys1,
+            {ok,[{test,has_map_fields,Fail,[Src|Keys]}|Acc]};
+        false ->
+            error
+    end;
+simplify_has_map_fields(_, _, _) -> error.
+
+are_keys_literals([{x,_}|_]) -> false;
+are_keys_literals([{y,_}|_]) -> false;
+are_keys_literals([_|_]) -> true.
diff --git a/lib/compiler/src/beam_receive.erl b/lib/compiler/src/beam_receive.erl
deleted file mode 100644
index ddbe67605a..0000000000
--- a/lib/compiler/src/beam_receive.erl
+++ /dev/null
@@ -1,416 +0,0 @@
-%%
-%% %CopyrightBegin%
-%%
-%% Copyright Ericsson AB 2010-2018. All Rights Reserved.
-%%
-%% Licensed under the Apache License, Version 2.0 (the "License");
-%% you may not use this file except in compliance with the License.
-%% You may obtain a copy of the License at
-%%
-%%     http://www.apache.org/licenses/LICENSE-2.0
-%%
-%% Unless required by applicable law or agreed to in writing, software
-%% distributed under the License is distributed on an "AS IS" BASIS,
-%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-%% See the License for the specific language governing permissions and
-%% limitations under the License.
-%%
-%% %CopyrightEnd%
-%%
-
--module(beam_receive).
--export([module/2]).
--import(lists, [foldl/3,reverse/1,reverse/2]).
-
-%%%
-%%% In code such as:
-%%%
-%%%    Ref = make_ref(),        %Or erlang:monitor(process, Pid)
-%%%      .
-%%%      .
-%%%      .
-%%%    receive
-%%%       {Ref,Reply} -> Reply
-%%%    end.
-%%%
-%%% we know that none of the messages that exist in the message queue
-%%% before the call to make_ref/0 can be matched out in the receive
-%%% statement. Therefore we can avoid going through the entire message
-%%% queue if we introduce two new instructions (here written as
-%%% BIFs in pseudo-Erlang):
-%%%
-%%%    recv_mark(SomeUniqInteger),
-%%%    Ref = make_ref(),
-%%%      .
-%%%      .
-%%%      .
-%%%    recv_set(SomeUniqInteger),
-%%%    receive
-%%%       {Ref,Reply} -> Reply
-%%%    end.
-%%%
-%%% The recv_mark/1 instruction will save the current position and
-%%% SomeUniqInteger in the process context. The recv_set
-%%% instruction will verify that SomeUniqInteger is still stored
-%%% in the process context. If it is, it will set the current pointer
-%%% for the message queue (the next message to be read out) to the
-%%% position that was saved by recv_mark/1.
-%%%
-%%% The remove_message instruction must be modified to invalidate
-%%% the information stored by the previous recv_mark/1, in case there
-%%% is another receive executed between the calls to recv_mark/1 and
-%%% recv_set/1.
-%%%
-%%% We use a reference to a label (i.e. a position in the loaded code)
-%%% as the SomeUniqInteger.
-%%%
-
--spec module(beam_utils:module_code(), [compile:option()]) ->
-                    {'ok',beam_utils:module_code()}.
-
-module({Mod,Exp,Attr,Fs0,Lc}, _Opts) ->
-    Fs = [function(F) || F <- Fs0],
-    Code = {Mod,Exp,Attr,Fs,Lc},
-    {ok,Code}.
-
-%%%
-%%% Local functions.
-%%%
-
-function({function,Name,Arity,Entry,Is}) ->
-    try
-	D = beam_utils:index_labels(Is),
-	{function,Name,Arity,Entry,opt(Is, D, [])}
-    catch
-        Class:Error:Stack ->
-	    io:fwrite("Function: ~w/~w\n", [Name,Arity]),
-	    erlang:raise(Class, Error, Stack)
-    end.
-
-opt([{call_ext,A,{extfunc,erlang,spawn_monitor,A}}=I0|Is0], D, Acc)
-  when A =:= 1; A =:= 3 ->
-    case ref_in_tuple(Is0) of
-	no ->
-	    opt(Is0, D, [I0|Acc]);
-	{yes,Regs,Is1,MatchReversed} ->
-	    %% The call creates a brand new reference. Now
-	    %% search for a receive statement in the same
-	    %% function that will match against the reference.
-	    case opt_recv(Is1, Regs, D) of
-		no ->
-		    opt(Is0, D, [I0|Acc]);
-		{yes,Is,Lbl} ->
-		    opt(Is, D, MatchReversed++[I0,{recv_mark,{f,Lbl}}|Acc])
-	    end
-    end;
-opt([{call_ext,Arity,{extfunc,erlang,Name,Arity}}=I|Is0], D, Acc) ->
-    case creates_new_ref(Name, Arity) of
-	true ->
-	    %% The call creates a brand new reference. Now
-	    %% search for a receive statement in the same
-	    %% function that will match against the reference.
-	    case opt_recv(Is0, regs_init_x0(), D) of
-		no ->
-		    opt(Is0, D, [I|Acc]);
-		{yes,Is,Lbl} ->
-		    opt(Is, D, [I,{recv_mark,{f,Lbl}}|Acc])
-	    end;
-	false ->
-	    opt(Is0, D, [I|Acc])
-    end;
-opt([I|Is], D, Acc) ->
-    opt(Is, D, [I|Acc]);
-opt([], _, Acc) ->
-    reverse(Acc).
-
-ref_in_tuple([{test,is_tuple,_,[{x,0}]}=I1,
-	      {test,test_arity,_,[{x,0},2]}=I2,
-	      {block,[{set,[_],[{x,0}],{get_tuple_element,0}},
-		      {set,[Dst],[{x,0}],{get_tuple_element,1}}|Bl]}=I3|Is]) ->
-    ref_in_tuple_1(Bl, Dst, Is, [I3,I2,I1]);
-ref_in_tuple([{test,is_tuple,_,[{x,0}]}=I1,
-	      {test,test_arity,_,[{x,0},2]}=I2,
-	      {block,[{set,[Dst],[{x,0}],{get_tuple_element,1}}|Bl]}=I3|Is]) ->
-    ref_in_tuple_1(Bl, Dst, Is, [I3,I2,I1]);
-ref_in_tuple(_) -> no.
-
-ref_in_tuple_1(Bl, Dst, Is, MatchReversed) ->
-    Regs0 = regs_init_singleton(Dst),
-    Regs = opt_update_regs_bl(Bl, Regs0),
-    {yes,Regs,Is,MatchReversed}.
-
-%% creates_new_ref(Name, Arity) -> true|false.
-%%  Return 'true' if the BIF Name/Arity will create a new reference.
-creates_new_ref(monitor, 2) -> true;
-creates_new_ref(make_ref, 0) -> true;
-creates_new_ref(_, _) -> false.
-
-%% opt_recv([Instruction], Regs, LabelIndex) -> no|{yes,[Instruction]}
-%%  Search for a receive statement that will only retrieve messages
-%%  that contain the newly created reference (which is currently in {x,0}).
-opt_recv(Is, Regs, D) ->
-    L = gb_sets:empty(),
-    opt_recv(Is, D, Regs, L, []).
-
-opt_recv([{label,L}=Lbl,{loop_rec,{f,Fail},_}=Loop|Is], D, R0, _, Acc) ->
-    R = regs_kill_not_live(0, R0),
-    case regs_empty(R) of
-	false ->
-	    %% We now have the new reference in Y registers
-	    %% and the current instruction is the beginning of a
-	    %% receive statement. We must now verify that only messages
-	    %% that contain the reference will be matched.
-	    case opt_ref_used(Is, R, Fail, D) of
-		false ->
-		    no;
-		true ->
-		    RecvSet = {recv_set,{f,L}},
-		    {yes,reverse(Acc, [RecvSet,Lbl,Loop|Is]),L}
-	    end;
-	true ->
-	    no
-    end;
-opt_recv([I|Is], D, R0, L0, Acc) ->
-    {R,L} = opt_update_regs(I, R0, L0),
-    case regs_empty(R) of
-	true ->
-	    %% The reference is no longer alive. There is no
-	    %% point in continuing the search.
-	    no;
-	false ->
-	    opt_recv(Is, D, R, L, [I|Acc])
-    end;
-opt_recv([], _, _, _, _) -> no.
-
-opt_update_regs({block,Bl}, R, L) ->
-    {opt_update_regs_bl(Bl, R),L};
-opt_update_regs({call,_,_}, R, L) ->
-    {regs_kill_not_live(0, R),L};
-opt_update_regs({call_ext,_,_}, R, L) ->
-    {regs_kill_not_live(0, R),L};
-opt_update_regs({call_fun,_}, R, L) ->
-    {regs_kill_not_live(0, R),L};
-opt_update_regs({kill,Y}, R, L) ->
-    {regs_kill([Y], R),L};
-opt_update_regs({'catch',_,{f,Lbl}}, R, L) ->
-    {R,gb_sets:add(Lbl, L)};
-opt_update_regs({catch_end,_}, R, L) ->
-    {R,L};
-opt_update_regs({label,Lbl}, R, L) ->
-    case gb_sets:is_member(Lbl, L) of
-	false ->
-	    %% We can't allow arbitrary labels (since the receive
-	    %% could be entered without first creating the reference).
-	    {regs_init(),L};
-	true ->
-	    %% A catch label for a previously seen catch instruction is OK.
-	    {R,L}
-    end;
-opt_update_regs({'try',_,{f,Lbl}}, R, L) ->
-    {R,gb_sets:add(Lbl, L)};
-opt_update_regs({try_end,_}, R, L) ->
-    {R,L};
-opt_update_regs({line,_}, R, L) ->
-    {R,L};
-opt_update_regs(_I, _R, L) ->
-    %% Unrecognized instruction. Abort the search.
-    {regs_init(),L}.
-
-opt_update_regs_bl([{set,Ds,_,{alloc,Live,_}}|Is], Regs0) ->
-    Regs1 = regs_kill_not_live(Live, Regs0),
-    Regs = regs_kill(Ds, Regs1),
-    opt_update_regs_bl(Is, Regs);
-opt_update_regs_bl([{set,[Dst]=Ds,[Src],move}|Is], Regs0) ->
-    Regs1 = regs_kill(Ds, Regs0),
-    Regs = case regs_is_member(Src, Regs1) of
-	       false -> Regs1;
-	       true -> regs_add(Dst, Regs1)
-	   end,
-    opt_update_regs_bl(Is, Regs);
-opt_update_regs_bl([{set,Ds,_,_}|Is], Regs0) ->
-    Regs = regs_kill(Ds, Regs0),
-    opt_update_regs_bl(Is, Regs);
-opt_update_regs_bl([], Regs) -> Regs.
-
-%% opt_ref_used([Instruction], RefRegs, FailLabel, LabelIndex) -> true|false
-%%  Return 'true' if it is certain that only messages that contain the same
-%%  reference as in RefRegs can be matched out. Otherwise return 'false'.
-%%
-%%  Basically, we follow all possible paths through the receive statement.
-%%  If all paths are safe, we return 'true'.
-%%
-%%  A branch to FailLabel is safe, because it exits the receive statement
-%%  and no further message may be matched out.
-%%
-%%  If a path hits an comparision between RefRegs and part of the message,
-%%  that path is safe (any messages that may be matched further down the
-%%  path is guaranteed to contain the reference).
-%%
-%%  Otherwise, if we hit a 'remove_message' instruction, we give up
-%%  and return 'false' (the optimization is definitely unsafe). If
-%%  we hit an unrecognized instruction, we also give up and return
-%%  'false' (the optimization may be unsafe).
-
-opt_ref_used(Is, RefRegs, Fail, D) ->
-    Done = gb_sets:singleton(Fail),
-    Regs = regs_init_x0(),
-    try
-	_ = opt_ref_used_1(Is, RefRegs, D, Done, Regs),
-	true
-    catch
-	throw:not_used ->
-	    false
-    end.
-
-%% This functions only returns if all paths through the receive
-%% statement are safe, and throws an 'not_used' term otherwise.
-opt_ref_used_1([{block,Bl}|Is], RefRegs, D, Done, Regs0) ->
-    Regs = opt_ref_used_bl(Bl, Regs0),
-    opt_ref_used_1(Is, RefRegs, D, Done, Regs);
-opt_ref_used_1([{test,is_eq_exact,{f,Fail},Args}|Is],
-	       RefRegs, D, Done0, Regs) ->
-    Done = opt_ref_used_at(Fail, RefRegs, D, Done0, Regs),
-    case is_ref_msg_comparison(Args, RefRegs, Regs) of
-	false ->
-	    opt_ref_used_1(Is, RefRegs, D, Done, Regs);
-	true ->
-	    %% The instructions that follow (Is) can only be executed
-	    %% if the message contains the same reference as in RefRegs.
-	    Done
-    end;
-opt_ref_used_1([{test,is_ne_exact,{f,Fail},Args}|Is],
-	       RefRegs, D, Done0, Regs) ->
-    Done = opt_ref_used_1(Is, RefRegs, D, Done0, Regs),
-    case is_ref_msg_comparison(Args, RefRegs, Regs) of
-	false ->
-	    opt_ref_used_at(Fail, RefRegs, D, Done, Regs);
-	true ->
-	    Done
-    end;
-opt_ref_used_1([{test,_,{f,Fail},_}|Is], RefRegs, D, Done0, Regs) ->
-    Done = opt_ref_used_at(Fail, RefRegs, D, Done0, Regs),
-    opt_ref_used_1(Is, RefRegs, D, Done, Regs);
-opt_ref_used_1([{select,_,_,{f,Fail},List}|_], RefRegs, D, Done, Regs) ->
-    Lbls = [F || {f,F} <- List] ++ [Fail],
-    opt_ref_used_in_all(Lbls, RefRegs, D, Done, Regs);
-opt_ref_used_1([{label,Lbl}|Is], RefRegs, D, Done, Regs) ->
-    case gb_sets:is_member(Lbl, Done) of
-	true -> Done;
-	false -> opt_ref_used_1(Is, RefRegs, D, Done, Regs)
-    end;
-opt_ref_used_1([{loop_rec_end,_}|_], _, _, Done, _) ->
-    Done;
-opt_ref_used_1([_I|_], _RefReg, _D, _Done, _Regs) ->
-    %% The optimization may be unsafe.
-    throw(not_used).
-
-%% is_ref_msg_comparison(Args, RefRegs, RegisterSet) -> true|false.
-%%  Return 'true' if Args denotes a comparison between the
-%%  reference and message or part of the message.
-is_ref_msg_comparison([R1,R2], RefRegs, Regs) ->
-    (regs_is_member(R2, RefRegs) andalso regs_is_member(R1, Regs)) orelse
-    (regs_is_member(R1, RefRegs) andalso regs_is_member(R2, Regs)).
-
-opt_ref_used_in_all([L|Ls], RefRegs, D, Done0, Regs) ->
-    Done = opt_ref_used_at(L, RefRegs, D, Done0, Regs),
-    opt_ref_used_in_all(Ls, RefRegs, D, Done, Regs);
-opt_ref_used_in_all([], _, _, Done, _) -> Done.
-
-opt_ref_used_at(Fail, RefRegs, D, Done0, Regs) ->
-    case gb_sets:is_member(Fail, Done0) of
-	true ->
-	    Done0;
-	false ->
-	    Is = beam_utils:code_at(Fail, D),
-	    Done = opt_ref_used_1(Is, RefRegs, D, Done0, Regs),
-	    gb_sets:add(Fail, Done)
-    end.
-
-opt_ref_used_bl([{set,[],[],remove_message}|_], _) ->
-    %% We have proved that a message that does not depend on the
-    %% reference can be matched out.
-    throw(not_used);
-opt_ref_used_bl([{set,Ds,Ss,_}|Is], Regs0) ->
-    case regs_all_members(Ss, Regs0) of
-	false ->
-	    %% The destination registers may be assigned values that
-	    %% are not dependent on the message being matched.
-	    Regs = regs_kill(Ds, Regs0),
-	    opt_ref_used_bl(Is, Regs);
-	true ->
-	    %% All the sources depend on the message directly or
-	    %% indirectly.
-	    Regs = regs_add_list(Ds, Regs0),
-	    opt_ref_used_bl(Is, Regs)
-    end;
-opt_ref_used_bl([], Regs) -> Regs.
-
-%%%
-%%% Functions for keeping track of a set of registers.
-%%%
-
-%% regs_init() -> RegisterSet
-%%  Return an empty set of registers.
-
-regs_init() ->
-    {0,0}.
-
-%% regs_init_singleton(Register) -> RegisterSet
-%%  Return a set that only contains one register.
-
-regs_init_singleton(Reg) ->
-    regs_add(Reg, regs_init()).
-
-%% regs_init_x0() -> RegisterSet
-%%  Return a set that only contains the {x,0} register.
-
-regs_init_x0() ->
-    {1 bsl 0,0}.
-
-%% regs_empty(Register) -> true|false
-%%  Test whether the register set is empty.
-
-regs_empty(R) ->
-    R =:= {0,0}.
-
-%% regs_kill_not_live(Live, RegisterSet) -> RegisterSet'
-%%  Kill all registers indicated not live by Live.
-
-regs_kill_not_live(Live, {Xregs,Yregs}) ->
-    {Xregs band ((1 bsl Live)-1),Yregs}.
-
-%% regs_kill([Register], RegisterSet) -> RegisterSet'
-%%  Kill all registers mentioned in the list of registers.
-
-regs_kill([{x,N}|Rs], {Xregs,Yregs}) ->
-    regs_kill(Rs, {Xregs band (bnot (1 bsl N)),Yregs});
-regs_kill([{y,N}|Rs], {Xregs,Yregs}) ->
-    regs_kill(Rs, {Xregs,Yregs band (bnot (1 bsl N))});
-regs_kill([{fr,_}|Rs], Regs) ->
-    regs_kill(Rs, Regs);
-regs_kill([], Regs) -> Regs.
-
-regs_add_list(List, Regs) ->
-    foldl(fun(R, A) -> regs_add(R, A) end, Regs, List).
-
-%% regs_add(Register, RegisterSet) -> RegisterSet'
-%%  Add a new register to the set of registers.
-
-regs_add({x,N}, {Xregs,Yregs}) ->
-    {Xregs bor (1 bsl N),Yregs};
-regs_add({y,N}, {Xregs,Yregs}) ->
-    {Xregs,Yregs bor (1 bsl N)}.
-
-%% regs_all_members([Register], RegisterSet) -> true|false
-%%  Test whether all of the registers are part of the register set.
-
-regs_all_members([R|Rs], Regs) ->
-    regs_is_member(R, Regs) andalso regs_all_members(Rs, Regs);
-regs_all_members([], _) -> true.
-
-%% regs_is_member(Register, RegisterSet) -> true|false
-%%  Test whether Register is part of the register set.
-
-regs_is_member({x,N}, {Regs,_}) -> Regs band (1 bsl N) =/= 0;
-regs_is_member({y,N}, {_,Regs}) -> Regs band (1 bsl N) =/= 0;
-regs_is_member(_, _) -> false.
diff --git a/lib/compiler/src/beam_record.erl b/lib/compiler/src/beam_record.erl
deleted file mode 100644
index 58a6de6775..0000000000
--- a/lib/compiler/src/beam_record.erl
+++ /dev/null
@@ -1,131 +0,0 @@
-%% %CopyrightBegin%
-%%
-%% Copyright Ericsson AB 2014-2017. All Rights Reserved.
-%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
-%%
-%% %CopyrightEnd%
-%%
-
-%% Rewrite the instruction stream on tagged tuple tests.
-%% Tagged tuples means a tuple of any arity with an atom as its
-%% first element, such as records and error tuples.
-%%
-%% From:
-%%     ...
-%%     {test,is_tuple,Fail,[Src]}.
-%%     {test,test_arity,Fail,[Src,Sz]}.
-%%     ...
-%%     {get_tuple_element,Src,0,Dst}.
-%%     ...
-%%     {test,is_eq_exact,Fail,[Dst,Atom]}.
-%%     ...
-%% To:
-%%     ...
-%%     {test,is_tagged_tuple,Fail,[Src,Sz,Atom]}.
-%%     ...
-%%
-
--module(beam_record).
--export([module/2]).
-
--import(lists, [reverse/1,reverse/2]).
-
--spec module(beam_utils:module_code(), [compile:option()]) ->
-                    {'ok',beam_utils:module_code()}.
-
-module({Mod,Exp,Attr,Fs0,Lc}, _Opt) ->
-    Fs = [function(F) || F <- Fs0],
-    {ok,{Mod,Exp,Attr,Fs,Lc}}.
-
-function({function,Name,Arity,CLabel,Is0}) ->
-    try
-        Is1 = beam_utils:anno_defs(Is0),
-        Idx = beam_utils:index_labels(Is1),
-        Is = rewrite(reverse(Is1), Idx),
-        {function,Name,Arity,CLabel,Is}
-    catch
-        Class:Error:Stack ->
-            io:fwrite("Function: ~w/~w\n", [Name,Arity]),
-            erlang:raise(Class, Error, Stack)
-    end.
-
-rewrite(Is, Idx) ->
-    rewrite(Is, Idx, 0, []).
-
-rewrite([{test,test_arity,Fail,[Src,N]}=TA,
-         {test,is_tuple,Fail,[Src]}=TT|Is], Idx, Def, Acc0) ->
-    case is_tagged_tuple(Acc0, Def, Fail, Src, Idx) of
-        no ->
-            rewrite(Is, Idx, 0, [TT,TA|Acc0]);
-        {yes,Atom,Acc} ->
-            I = {test,is_tagged_tuple,Fail,[Src,N,Atom]},
-            rewrite(Is, Idx, Def, [I|Acc])
-    end;
-rewrite([{block,[{'%anno',{def,Def}}|Bl]}|Is], Idx, _Def, Acc) ->
-    rewrite(Is, Idx, Def, [{block,Bl}|Acc]);
-rewrite([{label,L}=I|Is], Idx0, Def, Acc) ->
-    Idx = beam_utils:index_label(L, Acc, Idx0),
-    rewrite(Is, Idx, Def, [I|Acc]);
-rewrite([I|Is], Idx, Def, Acc) ->
-    rewrite(Is, Idx, Def, [I|Acc]);
-rewrite([], _, _, Acc) -> Acc.
-
-is_tagged_tuple([{block,Bl},
-                 {test,is_eq_exact,Fail,[Dst,{atom,_}=Atom]}|Is],
-                Def, Fail, Src, Idx) ->
-    case is_tagged_tuple_1(Bl, Is, Fail, Src, Dst, Idx, Def, []) of
-        no ->
-            no;
-        {yes,[]} ->
-            {yes,Atom,Is};
-        {yes,[_|_]=Block} ->
-            {yes,Atom,[{block,Block}|Is]}
-    end;
-is_tagged_tuple(_, _, _, _, _) ->
-    no.
-
-is_tagged_tuple_1([{set,[Dst],[Src],{get_tuple_element,0}}=I|Bl],
-                  Is, Fail, Src, Dst, Idx, Def, Acc) ->
-    %% Check usage of Dst to find out whether the get_tuple_element
-    %% is needed.
-    case usage(Dst, Is, Fail, Idx) of
-        killed ->
-            %% Safe to remove the get_tuple_element instruction.
-            {yes,reverse(Acc, Bl)};
-        used ->
-            %% Actively used. Must keep instruction.
-            {yes,reverse(Acc, [I|Bl])};
-        not_used ->
-            %% Not actually used (but must be initialized).
-            case is_defined(Dst, Def) of
-                false ->
-                    %% Dst must be initialized, but the
-                    %% actual value does not matter.
-                    Kill = {set,[Dst],[nil],move},
-                    {yes,reverse(Acc, [Kill|Bl])};
-                true ->
-                    %% The register is previously initialized.
-                    %% We can remove the instruction.
-                    {yes,reverse(Acc, Bl)}
-            end
-    end;
-is_tagged_tuple_1([I|Bl], Is, Fail, Src, Dst, Idx, Def, Acc) ->
-    is_tagged_tuple_1(Bl, Is, Fail, Src, Dst, Idx, Def, [I|Acc]);
-is_tagged_tuple_1(_, _, _, _, _, _, _, _) ->
-    no.
-
-usage(Dst, Is, Fail, Idx) ->
-    beam_utils:usage(Dst, [{test,is_number,Fail,[nil]}|Is], Idx).
-
-is_defined({x,X}, Def) ->
-    (Def bsr X) band 1 =:= 1.
diff --git a/lib/compiler/src/beam_reorder.erl b/lib/compiler/src/beam_reorder.erl
deleted file mode 100644
index 8d2ef5a431..0000000000
--- a/lib/compiler/src/beam_reorder.erl
+++ /dev/null
@@ -1,150 +0,0 @@
-%%
-%% %CopyrightBegin%
-%%
-%% Copyright Ericsson AB 1999-2018. All Rights Reserved.
-%%
-%% Licensed under the Apache License, Version 2.0 (the "License");
-%% you may not use this file except in compliance with the License.
-%% You may obtain a copy of the License at
-%%
-%%     http://www.apache.org/licenses/LICENSE-2.0
-%%
-%% Unless required by applicable law or agreed to in writing, software
-%% distributed under the License is distributed on an "AS IS" BASIS,
-%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-%% See the License for the specific language governing permissions and
-%% limitations under the License.
-%%
-%% %CopyrightEnd%
-%%
-
--module(beam_reorder).
-
--export([module/2]).
--import(lists, [member/2,reverse/1]).
-
--spec module(beam_utils:module_code(), [compile:option()]) ->
-                    {'ok',beam_utils:module_code()}.
-
-module({Mod,Exp,Attr,Fs0,Lc}, _Opt) ->
-    Fs = [function(F) || F <- Fs0],
-    {ok,{Mod,Exp,Attr,Fs,Lc}}.
-
-function({function,Name,Arity,CLabel,Is0}) ->
-    try
-	Is = reorder(Is0),
-	{function,Name,Arity,CLabel,Is}
-    catch
-        Class:Error:Stack ->
-	    io:fwrite("Function: ~w/~w\n", [Name,Arity]),
-	    erlang:raise(Class, Error, Stack)
-    end.
-
-%% reorder(Instructions0) -> Instructions
-%%  Reorder instructions before the beam_block pass, because reordering
-%%  will be more cumbersome when the blocks are in place.
-%%
-%%  Execution of get_tuple_element instructions can be delayed until
-%%  they are actually needed. Consider the sequence:
-%%
-%%      get_tuple_element Tuple Pos Dst
-%%      test Test Fail Operands
-%%
-%%  If Dst is killed at label Fail (and not referenced in Operands),
-%%  we can can swap the instructions:
-%%
-%%      test Test Fail Operands
-%%      get_tuple_element Tuple Pos Dst
-%%
-%%  That can be beneficial in two ways: Firstly, if the branch is taken
-%%  we have avoided execution of the get_tuple_element instruction.
-%%  Secondly, even if the branch is not taken, subsequent optimization
-%%  (opt_blocks/1) may be able to change Dst to the final destination
-%%  register and eliminate a 'move' instruction.
-
-reorder(Is) ->
-    D = beam_utils:index_labels(Is),
-    reorder_1(Is, D, []).
-
-reorder_1([{Op,_,_}=TryCatch|[I|Is]=Is0], D, Acc)
-  when Op =:= 'catch'; Op =:= 'try' ->
-    %% Don't allow 'try' or 'catch' instructions to split blocks if
-    %% it can be avoided.
-    case is_safe(I) of
-	false ->
-	    reorder_1(Is0, D, [TryCatch|Acc]);
-	true ->
-	    reorder_1([TryCatch|Is], D, [I|Acc])
-    end;
-reorder_1([{label,L}=I|_], D, Acc) ->
-    Is = beam_utils:code_at(L, D),
-    reorder_1(Is, D, [I|Acc]);
-reorder_1([{test,is_nonempty_list,_,_}=I|Is], D, Acc) ->
-    %% The run-time system may combine the is_nonempty_list test with
-    %% the following get_list instruction.
-    reorder_1(Is, D, [I|Acc]);
-reorder_1([{test,_,_,_}=I,
-	   {select,_,_,_,_}=S|Is], D, Acc) ->
-    %% There is nothing to gain by inserting a get_tuple_element
-    %% instruction between the test instruction and the select
-    %% instruction.
-    reorder_1(Is, D, [S,I|Acc]);
-reorder_1([{test,_,{f,_},[Src|_]}=I|Is], D,
-	  [{get_tuple_element,Src,_,_}|_]=Acc) ->
-    %% We want to avoid code that can confuse beam_validator such as:
-    %%   is_tuple Fail Src
-    %%   test_arity Fail Src Arity
-    %%   is_map Fail Src
-    %%   get_tuple_element Src Pos Dst
-    %% Therefore, don't reorder the instructions in such cases.
-    reorder_1(Is, D, [I|Acc]);
-reorder_1([{test,_,{f,L},Ss}=I|Is0], D0,
-	  [{get_tuple_element,_,_,El}=G|Acc0]=Acc) ->
-    case member(El, Ss) of
-	true ->
-	    reorder_1(Is0, D0, [I|Acc]);
-	false ->
-	    case beam_utils:is_killed_at(El, L, D0) of
-		true ->
-		    Is = [I,G|Is0],
-		    reorder_1(Is, D0, Acc0);
-		false ->
-		    case beam_utils:is_killed(El, Is0, D0) of
-			true ->
-			    Code0 = beam_utils:code_at(L, D0),
-			    Code = [G|Code0],
-			    D = beam_utils:index_label(L, Code, D0),
-			    Is = [I|Is0],
-			    reorder_1(Is, D, Acc0);
-			false ->
-			    reorder_1(Is0, D0, [I|Acc])
-		    end
-	    end
-    end;
-reorder_1([{allocate_zero,N,Live}=I0|Is], D,
-	  [{get_tuple_element,{x,Tup},_,{x,Dst}}=G|Acc]=Acc0) ->
-    case Tup < Dst andalso Dst+1 =:= Live of
-	true ->
-	    %% Move allocation instruction upwards past
-	    %% get_tuple_element instructions to create more
-	    %% opportunities for moving get_tuple_element
-	    %% instructions.
-	    I = {allocate_zero,N,Dst},
-	    reorder_1([I,G|Is], D, Acc);
-	false ->
-	    reorder_1(Is, D, [I0|Acc0])
-    end;
-reorder_1([I|Is], D, Acc) ->
-    reorder_1(Is, D, [I|Acc]);
-reorder_1([], _, Acc) -> reverse(Acc).
-
-%% is_safe(Instruction) -> true|false
-%%  Test whether an instruction is safe (cannot cause an exception).
-
-is_safe({kill,_}) -> true;
-is_safe({move,_,_}) -> true;
-is_safe({put,_}) -> true;
-is_safe({put_list,_,_,_}) -> true;
-is_safe({put_tuple,_,_}) -> true;
-is_safe({test_heap,_,_}) -> true;
-is_safe(_) -> false.
diff --git a/lib/compiler/src/beam_split.erl b/lib/compiler/src/beam_split.erl
deleted file mode 100644
index 809e49b3d0..0000000000
--- a/lib/compiler/src/beam_split.erl
+++ /dev/null
@@ -1,94 +0,0 @@
-%%
-%% %CopyrightBegin%
-%%
-%% Copyright Ericsson AB 2011-2018. All Rights Reserved.
-%%
-%% Licensed under the Apache License, Version 2.0 (the "License");
-%% you may not use this file except in compliance with the License.
-%% You may obtain a copy of the License at
-%%
-%%     http://www.apache.org/licenses/LICENSE-2.0
-%%
-%% Unless required by applicable law or agreed to in writing, software
-%% distributed under the License is distributed on an "AS IS" BASIS,
-%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-%% See the License for the specific language governing permissions and
-%% limitations under the License.
-%%
-%% %CopyrightEnd%
-%%
-
--module(beam_split).
--export([module/2]).
-
--import(lists, [reverse/1]).
-
--spec module(beam_utils:module_code(), [compile:option()]) ->
-                    {'ok',beam_utils:module_code()}.
-
-module({Mod,Exp,Attr,Fs0,Lc}, _Opts) ->
-    Fs = [split_blocks(F) || F <- Fs0],
-    {ok,{Mod,Exp,Attr,Fs,Lc}}.
-
-%% We must split the basic block when we encounter instructions with labels,
-%% such as catches and BIFs. All labels must be visible outside the blocks.
-
-split_blocks({function,Name,Arity,CLabel,Is0}) ->
-    Is = split_blocks(Is0, []),
-    {function,Name,Arity,CLabel,Is}.
-
-split_blocks([{block,Bl}|Is], Acc0) ->
-    Acc = split_block(Bl, [], Acc0),
-    split_blocks(Is, Acc);
-split_blocks([I|Is], Acc) ->
-    split_blocks(Is, [I|Acc]);
-split_blocks([], Acc) -> reverse(Acc).
-
-split_block([{set,[R],[_,_,_]=As,{bif,is_record,{f,Lbl}}}|Is], Bl, Acc) ->
-    %% is_record/3 must be translated by beam_clean; therefore,
-    %% it must be outside of any block.
-    split_block(Is, [], [{bif,is_record,{f,Lbl},As,R}|make_block(Bl, Acc)]);
-split_block([{set,[R],As,{bif,N,{f,Lbl}=Fail}}|Is], Bl, Acc) when Lbl =/= 0 ->
-    split_block(Is, [], [{bif,N,Fail,As,R}|make_block(Bl, Acc)]);
-split_block([{set,[],[],{line,_}=Line},
-             {set,[R],As,{bif,raise,{f,_}=Fail}}|Is], Bl, Acc) ->
-    split_block(Is, [], [{bif,raise,Fail,As,R},Line|make_block(Bl, Acc)]);
-split_block([{set,[R],As,{alloc,Live,{gc_bif,N,{f,Lbl}=Fail}}}|Is], Bl, Acc)
-  when Lbl =/= 0 ->
-    split_block(Is, [], [{gc_bif,N,Fail,Live,As,R}|make_block(Bl, Acc)]);
-split_block([{set,[D],[S|Puts],{alloc,R,{put_map,Op,{f,Lbl}=Fail}}}|Is],
-	    Bl, Acc) when Lbl =/= 0 ->
-    split_block(Is, [], [{put_map,Fail,Op,S,D,R,{list,Puts}}|
-			 make_block(Bl, Acc)]);
-split_block([{set,[R],[],{try_catch,Op,L}}|Is], Bl, Acc) ->
-    split_block(Is, [], [{Op,R,L}|make_block(Bl, Acc)]);
-split_block([I|Is], Bl, Acc) ->
-    split_block(Is, [I|Bl], Acc);
-split_block([], Bl, Acc) -> make_block(Bl, Acc).
-
-make_block([], Acc) -> Acc;
-make_block([{set,[D],Ss,{bif,Op,Fail}}|Bl]=Bl0, Acc) ->
-    %% If the last instruction in the block is a comparison or boolean operator
-    %% (such as '=:='), move it out of the block to facilitate further
-    %% optimizations.
-    Arity = length(Ss),
-    case erl_internal:comp_op(Op, Arity) orelse
-	erl_internal:new_type_test(Op, Arity) orelse
-	erl_internal:bool_op(Op, Arity) of
-	false ->
-	    [{block,reverse(Bl0)}|Acc];
-	true ->
-	    I = {bif,Op,Fail,Ss,D},
-	    case Bl =:= [] of
-		true -> [I|Acc];
-		false -> [I,{block,reverse(Bl)}|Acc]
-	    end
-    end;
-make_block([{set,[Dst],[Src],move}|Bl], Acc) ->
-    %% Make optimization of {move,Src,Dst}, {jump,...} possible.
-    I = {move,Src,Dst},
-    case Bl =:= [] of
-	true -> [I|Acc];
-	false -> [I,{block,reverse(Bl)}|Acc]
-    end;
-make_block(Bl, Acc) -> [{block,reverse(Bl)}|Acc].
diff --git a/lib/compiler/src/beam_ssa.erl b/lib/compiler/src/beam_ssa.erl
new file mode 100644
index 0000000000..a9977b0b1d
--- /dev/null
+++ b/lib/compiler/src/beam_ssa.erl
@@ -0,0 +1,890 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2018. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+%% Purpose: Type definitions and utilities for the SSA format.
+
+-module(beam_ssa).
+-export([add_anno/3,get_anno/2,get_anno/3,
+         clobbers_xregs/1,def/2,def_used/2,
+         definitions/1,
+         dominators/1,common_dominators/3,
+         flatmapfold_instrs_rpo/4,
+         fold_po/3,fold_po/4,fold_rpo/3,fold_rpo/4,
+         fold_instrs_rpo/4,
+         linearize/1,
+         mapfold_blocks_rpo/4,
+         mapfold_instrs_rpo/4,
+         normalize/1,
+         no_side_effect/1,
+         predecessors/1,
+         rename_vars/3,
+         rpo/1,rpo/2,
+         split_blocks/3,
+         successors/1,successors/2,
+         trim_unreachable/1,
+         update_phi_labels/4,used/1,
+         uses/1,uses/2]).
+
+-export_type([b_module/0,b_function/0,b_blk/0,b_set/0,
+              b_ret/0,b_br/0,b_switch/0,terminator/0,
+              b_var/0,b_literal/0,b_remote/0,b_local/0,
+              value/0,argument/0,label/0,
+              var_name/0,var_base/0,literal_value/0,
+              op/0,anno/0,block_map/0,dominator_map/0,
+              rename_map/0,rename_proplist/0,usage_map/0,
+              definition_map/0]).
+
+-include("beam_ssa.hrl").
+
+-type b_module()   :: #b_module{}.
+-type b_function() :: #b_function{}.
+-type b_blk()      :: #b_blk{}.
+-type b_set()      :: #b_set{}.
+
+-type b_br()       :: #b_br{}.
+-type b_ret()      :: #b_ret{}.
+-type b_switch()   :: #b_switch{}.
+-type terminator() :: b_br() | b_ret() | b_switch().
+
+-type construct()  :: b_module() | b_function() | b_blk() | b_set() |
+                      terminator().
+
+-type b_var()      :: #b_var{}.
+-type b_literal()  :: #b_literal{}.
+-type b_remote()   :: #b_remote{}.
+-type b_local()    :: #b_local{}.
+
+-type value()      :: b_var() | b_literal().
+-type phi_value()  :: {value(),label()}.
+-type argument()   :: value() | b_remote() | b_local() | phi_value().
+-type label()      :: non_neg_integer().
+
+-type var_name()   :: var_base() | {var_base(),non_neg_integer()}.
+-type var_base()   :: atom() | non_neg_integer().
+
+-type literal_value() :: atom() | integer() | float() | list() |
+                         nil() | tuple() | map() | binary().
+
+-type op()   :: {'bif',atom()} | {'float',float_op()} | prim_op() | cg_prim_op().
+-type anno() :: #{atom() := any()}.
+
+-type block_map() :: #{label():=b_blk()}.
+-type dominator_map() :: #{label():=[label()]}.
+-type numbering_map() :: #{label():=non_neg_integer()}.
+-type usage_map() :: #{b_var():=[{label(),b_set() | terminator()}]}.
+-type definition_map() :: #{b_var():=b_set()}.
+-type rename_map() :: #{b_var():=value()}.
+-type rename_proplist() :: [{b_var(),value()}].
+
+%% Note: By default, dialyzer will collapse this type to atom().
+%% To avoid the collapsing, change the value of SET_LIMIT to 50 in the
+%% file erl_types.erl in the hipe application.
+
+-type prim_op() :: 'bs_add' | 'bs_extract' | 'bs_init' | 'bs_init_writable' |
+                   'bs_match' | 'bs_put' | 'bs_start_match' | 'bs_test_tail' |
+                   'bs_utf16_size' | 'bs_utf8_size' | 'build_stacktrace' |
+                   'call' | 'catch_end' |
+                   'extract' |
+                   'get_hd' | 'get_map_element' | 'get_tl' | 'get_tuple_element' |
+                   'has_map_field' |
+                   'is_nonempty_list' | 'is_tagged_tuple' |
+                   'kill_try_tag' |
+                   'landingpad' |
+                   'make_fun' | 'new_try_tag' |
+                   'peek_message' | 'phi' | 'put_list' | 'put_map' | 'put_tuple' |
+                   'raw_raise' | 'recv_next' | 'remove_message' | 'resume' |
+                   'succeeded' |
+                   'timeout' |
+                   'wait' | 'wait_timeout'.
+
+-type float_op() :: 'checkerror' | 'clearerror' | 'convert' | 'get' | 'put' |
+                    '+' | '-' | '*' | '/'.
+
+%% Primops only used internally during code generation.
+-type cg_prim_op() :: 'bs_get' | 'bs_match_string' | 'bs_restore' | 'bs_skip' |
+                      'copy' | 'put_tuple_arity' | 'put_tuple_element' |
+                      'set_tuple_element'.
+
+-import(lists, [foldl/3,keyfind/3,mapfoldl/3,member/2,reverse/1]).
+
+-spec add_anno(Key, Value, Construct) -> Construct when
+      Key :: atom(),
+      Value :: any(),
+      Construct :: construct().
+
+add_anno(Key, Val, #b_function{anno=Anno}=Bl) ->
+    Bl#b_function{anno=Anno#{Key=>Val}};
+add_anno(Key, Val, #b_blk{anno=Anno}=Bl) ->
+    Bl#b_blk{anno=Anno#{Key=>Val}};
+add_anno(Key, Val, #b_set{anno=Anno}=Bl) ->
+    Bl#b_set{anno=Anno#{Key=>Val}};
+add_anno(Key, Val, #b_br{anno=Anno}=Bl) ->
+    Bl#b_br{anno=Anno#{Key=>Val}};
+add_anno(Key, Val, #b_ret{anno=Anno}=Bl) ->
+    Bl#b_ret{anno=Anno#{Key=>Val}};
+add_anno(Key, Val, #b_switch{anno=Anno}=Bl) ->
+    Bl#b_switch{anno=Anno#{Key=>Val}}.
+
+-spec get_anno(atom(), construct()) -> any().
+
+get_anno(Key, Construct) ->
+    map_get(Key, get_anno(Construct)).
+
+-spec get_anno(atom(), construct(),any()) -> any().
+
+get_anno(Key, Construct, Default) ->
+    maps:get(Key, get_anno(Construct), Default).
+
+get_anno(#b_function{anno=Anno}) -> Anno;
+get_anno(#b_blk{anno=Anno}) -> Anno;
+get_anno(#b_set{anno=Anno}) -> Anno;
+get_anno(#b_br{anno=Anno}) -> Anno;
+get_anno(#b_ret{anno=Anno}) -> Anno;
+get_anno(#b_switch{anno=Anno}) -> Anno.
+
+%% clobbers_xregs(#b_set{}) -> true|false.
+%%  Test whether the instruction invalidates all X registers.
+
+-spec clobbers_xregs(b_set()) -> boolean().
+
+clobbers_xregs(#b_set{op=Op}) ->
+    case Op of
+        bs_init_writable -> true;
+        build_stacktrace -> true;
+        call -> true;
+        landingpad -> true;
+        make_fun -> true;
+        peek_message -> true;
+        raw_raise -> true;
+        _ -> false
+    end.
+
+%% no_side_effect(#b_set{}) -> true|false.
+%%  Test whether this instruction has no side effect and thus is safe
+%%  not to execute if its value is not used. Note that even if `true`
+%%  is returned, the instruction could still be impure (e.g. bif:get).
+
+-spec no_side_effect(b_set()) -> boolean().
+
+no_side_effect(#b_set{op=Op}) ->
+    case Op of
+        {bif,_} -> true;
+        {float,get} -> true;
+        bs_init -> true;
+        bs_extract -> true;
+        bs_match -> true;
+        bs_start_match -> true;
+        bs_test_tail -> true;
+        bs_get_tail -> true;
+        bs_put -> true;
+        extract -> true;
+        get_hd -> true;
+        get_tl -> true;
+        get_map_element -> true;
+        get_tuple_element -> true;
+        has_map_field -> true;
+        is_nonempty_list -> true;
+        is_tagged_tuple -> true;
+        make_fun -> true;
+        put_map -> true;
+        put_list -> true;
+        put_tuple -> true;
+        succeeded -> true;
+        _ -> false
+    end.
+
+-spec predecessors(Blocks) -> #{BlockNumber:=[Predecessor]} when
+      Blocks :: block_map(),
+      BlockNumber :: label(),
+      Predecessor :: label().
+
+predecessors(Blocks) ->
+    P0 = [{S,L} || {L,Blk} <- maps:to_list(Blocks),
+                   S <- successors(Blk)],
+    P1 = sofs:relation(P0),
+    P2 = sofs:rel2fam(P1),
+    P3 = sofs:to_external(P2),
+    P = [{0,[]}|P3],
+    maps:from_list(P).
+
+-spec successors(b_blk()) -> [label()].
+
+successors(#b_blk{last=Terminator}) ->
+    case Terminator of
+        #b_br{bool=#b_literal{val=true},succ=Succ} ->
+            [Succ];
+        #b_br{bool=#b_literal{val=false},fail=Fail} ->
+            [Fail];
+        #b_br{succ=Succ,fail=Fail} ->
+            [Fail,Succ];
+        #b_switch{fail=Fail,list=List} ->
+            [Fail|[L || {_,L} <- List]];
+        #b_ret{} ->
+            []
+    end.
+
+%% normalize(Instr0) -> Instr.
+%%  Normalize instructions to help optimizations.
+%%
+%%  For commutative operators (such as '+' and 'or'), always
+%%  place a variable operand before a literal operand.
+%%
+%%  Normalize #b_br{} to one of the following forms:
+%%
+%%    #b_br{b_literal{val=true},succ=Label,fail=Label}
+%%    #b_br{b_var{},succ=Label1,fail=Label2} where Label1 =/= Label2
+%%
+%%  Simplify a #b_switch{} with a literal argument to a #b_br{}.
+%%
+%%  Simplify a #b_switch{} with a variable argument and an empty
+%%  switch list to a #b_br{}.
+
+-spec normalize(b_set() | terminator()) ->
+                       b_set() | terminator().
+
+normalize(#b_set{op={bif,Bif},args=Args}=Set) ->
+    case {is_commutative(Bif),Args} of
+        {false,_} ->
+            Set;
+        {true,[#b_literal{}=Lit,#b_var{}=Var]} ->
+            Set#b_set{args=[Var,Lit]};
+        {true,_} ->
+            Set
+    end;
+normalize(#b_set{}=Set) ->
+    Set;
+normalize(#b_br{}=Br) ->
+    case Br of
+        #b_br{bool=Bool,succ=Same,fail=Same} ->
+            case Bool of
+                #b_literal{val=true} ->
+                    Br;
+                _ ->
+                    Br#b_br{bool=#b_literal{val=true}}
+            end;
+        #b_br{bool=#b_literal{val=true},succ=Succ} ->
+            Br#b_br{fail=Succ};
+        #b_br{bool=#b_literal{val=false},fail=Fail} ->
+            Br#b_br{bool=#b_literal{val=true},succ=Fail};
+        #b_br{} ->
+            Br
+    end;
+normalize(#b_switch{arg=Arg,fail=Fail,list=List}=Sw) ->
+    case Arg of
+        #b_literal{} ->
+            case keyfind(Arg, 1, List) of
+                false ->
+                    #b_br{bool=#b_literal{val=true},succ=Fail,fail=Fail};
+                {Arg,L} ->
+                    #b_br{bool=#b_literal{val=true},succ=L,fail=L}
+            end;
+        #b_var{} when List =:= [] ->
+            #b_br{bool=#b_literal{val=true},succ=Fail,fail=Fail};
+        #b_var{} ->
+            Sw
+    end;
+normalize(#b_ret{}=Ret) ->
+    Ret.
+
+-spec successors(label(), block_map()) -> [label()].
+
+successors(L, Blocks) ->
+    successors(map_get(L, Blocks)).
+
+-spec def(Ls, Blocks) -> Def when
+      Ls :: [label()],
+      Blocks :: block_map(),
+      Def :: ordsets:ordset(var_name()).
+
+def(Ls, Blocks) ->
+    Top = rpo(Ls, Blocks),
+    Blks = [map_get(L, Blocks) || L <- Top],
+    def_1(Blks, []).
+
+-spec def_used(Ls, Blocks) -> {Def,Used} when
+      Ls :: [label()],
+      Blocks :: block_map(),
+      Def :: ordsets:ordset(var_name()),
+      Used :: ordsets:ordset(var_name()).
+
+def_used(Ls, Blocks) ->
+    Top = rpo(Ls, Blocks),
+    Blks = [map_get(L, Blocks) || L <- Top],
+    Preds = cerl_sets:from_list(Top),
+    def_used_1(Blks, Preds, [], []).
+
+%% dominators(BlockMap) -> {Dominators,Numbering}.
+%%  Calculate the dominator tree, returning a map where each entry
+%%  in the map is a list that gives the path from that block to
+%%  the top of the dominator tree. (Note that the suffixes of the
+%%  paths are shared with each other, which make the representation
+%%  of the dominator tree highly memory-efficient.)
+%%
+%%  The implementation is based on:
+%%
+%%     http://www.hipersoft.rice.edu/grads/publications/dom14.pdf
+%%     Cooper, Keith D.; Harvey, Timothy J; Kennedy, Ken (2001).
+%%        A Simple, Fast Dominance Algorithm.
+
+-spec dominators(Blocks) -> Result when
+      Blocks :: block_map(),
+      Result :: {dominator_map(), numbering_map()}.
+dominators(Blocks) ->
+    Preds = predecessors(Blocks),
+    Top0 = rpo(Blocks),
+    Df = maps:from_list(number(Top0, 0)),
+    [{0,[]}|Top] = [{L,map_get(L, Preds)} || L <- Top0],
+
+    %% The flow graph for an Erlang function is reducible, and
+    %% therefore one traversal in reverse postorder is sufficient.
+    Acc = #{0=>[0]},
+    {dominators_1(Top, Df, Acc),Df}.
+
+%% common_dominators([Label], Dominators, Numbering) -> [Label].
+%%  Calculate the common dominators for the given list of blocks
+%%  and Dominators and Numbering as returned from dominators/1.
+
+-spec common_dominators([label()], dominator_map(), numbering_map()) -> [label()].
+common_dominators(Ls, Dom, Numbering) ->
+    Doms = [map_get(L, Dom) || L <- Ls],
+    dom_intersection(Doms, Numbering).
+
+-spec fold_instrs_rpo(Fun, From, Acc0, Blocks) -> any() when
+      Fun :: fun((b_blk()|terminator(), any()) -> any()),
+      From :: [label()],
+      Acc0 :: any(),
+      Blocks :: block_map().
+
+fold_instrs_rpo(Fun, From, Acc0, Blocks) ->
+    Top = rpo(From, Blocks),
+    fold_instrs_rpo_1(Top, Fun, Blocks, Acc0).
+
+%% Like mapfold_instrs_rpo but at the block level to support lookahead and
+%% scope-dependent transformations.
+-spec mapfold_blocks_rpo(Fun, From, Acc, Blocks) -> Result when
+      Fun :: fun((label(), b_blk(), any()) -> {b_blk(), any()}),
+      From :: [label()],
+      Acc :: any(),
+      Blocks :: block_map(),
+      Result :: {block_map(), any()}.
+mapfold_blocks_rpo(Fun, From, Acc, Blocks) ->
+    Successors = rpo(From, Blocks),
+    foldl(fun(Lbl, A) ->
+                  mapfold_blocks_rpo_1(Fun, Lbl, A)
+          end, {Blocks, Acc}, Successors).
+
+mapfold_blocks_rpo_1(Fun, Lbl, {Blocks0, Acc0}) ->
+    Block0 = map_get(Lbl, Blocks0),
+    {Block, Acc} = Fun(Lbl, Block0, Acc0),
+    Blocks = Blocks0#{Lbl:=Block},
+    {Blocks, Acc}.
+
+-spec mapfold_instrs_rpo(Fun, From, Acc0, Blocks0) -> {Blocks,Acc} when
+      Fun :: fun((b_blk()|terminator(), any()) -> any()),
+      From :: [label()],
+      Acc0 :: any(),
+      Acc :: any(),
+      Blocks0 :: block_map(),
+      Blocks :: block_map().
+
+mapfold_instrs_rpo(Fun, From, Acc0, Blocks) ->
+    Top = rpo(From, Blocks),
+    mapfold_instrs_rpo_1(Top, Fun, Blocks, Acc0).
+
+-spec flatmapfold_instrs_rpo(Fun, From, Acc0, Blocks0) -> {Blocks,Acc} when
+      Fun :: fun((b_blk()|terminator(), any()) -> any()),
+      From :: [label()],
+      Acc0 :: any(),
+      Acc :: any(),
+      Blocks0 :: block_map(),
+      Blocks :: block_map().
+
+flatmapfold_instrs_rpo(Fun, From, Acc0, Blocks) ->
+    Top = rpo(From, Blocks),
+    flatmapfold_instrs_rpo_1(Top, Fun, Blocks, Acc0).
+
+-type fold_fun() :: fun((label(), b_blk(), any()) -> any()).
+
+%% fold_rpo(Fun, [Label], Acc0, Blocks) -> Acc.
+%%  Fold over all blocks a reverse postorder traversal of the block
+%%  graph; that is, first visit a block, then visit its successors.
+
+-spec fold_rpo(Fun, Acc0, Blocks) -> any() when
+      Fun :: fold_fun(),
+      Acc0 :: any(),
+      Blocks :: #{label():=b_blk()}.
+
+fold_rpo(Fun, Acc0, Blocks) ->
+    fold_rpo(Fun, [0], Acc0, Blocks).
+
+%% fold_rpo(Fun, [Label], Acc0, Blocks) -> Acc.  Fold over all blocks
+%%  reachable from a given set of labels in a reverse postorder
+%%  traversal of the block graph; that is, first visit a block, then
+%%  visit its successors.
+
+-spec fold_rpo(Fun, Labels, Acc0, Blocks) -> any() when
+      Fun :: fold_fun(),
+      Labels :: [label()],
+      Acc0 :: any(),
+      Blocks :: #{label():=b_blk()}.
+
+fold_rpo(Fun, From, Acc0, Blocks) ->
+    Top = rpo(From, Blocks),
+    fold_rpo_1(Top, Fun, Blocks, Acc0).
+
+%% fold_po(Fun, Acc0, Blocks) -> Acc.
+%%  Fold over all blocks in a postorder traversal of the block graph;
+%%  that is, first visit all successors of block, then the block
+%%  itself.
+
+-spec fold_po(Fun, Acc0, Blocks) -> any() when
+      Fun :: fold_fun(),
+      Acc0 :: any(),
+      Blocks :: #{label():=b_blk()}.
+
+%% fold_po(Fun, From, Acc0, Blocks) -> Acc.
+%%  Fold over the blocks reachable from the block numbers given
+%%  by From in a postorder traversal of the block graph.
+
+fold_po(Fun, Acc0, Blocks) ->
+    fold_po(Fun, [0], Acc0, Blocks).
+
+-spec fold_po(Fun, Labels, Acc0, Blocks) -> any() when
+      Fun :: fold_fun(),
+      Labels :: [label()],
+      Acc0 :: any(),
+      Blocks :: block_map().
+
+fold_po(Fun, From, Acc0, Blocks) ->
+    Top = reverse(rpo(From, Blocks)),
+    fold_rpo_1(Top, Fun, Blocks, Acc0).
+
+%% linearize(Blocks) -> [{BlockLabel,#b_blk{}}].
+%%  Linearize the intermediate representation of the code.
+%%  Unreachable blocks will be discarded, and phi nodes will
+%%  be adjusted so that they no longer refers to discarded
+%%  blocks or to blocks that no longer are predecessors of
+%%  the phi node block.
+
+-spec linearize(Blocks) -> Linear when
+      Blocks :: block_map(),
+      Linear :: [{label(),b_blk()}].
+
+linearize(Blocks) ->
+    Seen = cerl_sets:new(),
+    {Linear0,_} = linearize_1([0], Blocks, Seen, []),
+    Linear = fix_phis(Linear0, #{}),
+    Linear.
+
+-spec rpo(Blocks) -> [Label] when
+      Blocks :: block_map(),
+      Label :: label().
+
+rpo(Blocks) ->
+    rpo([0], Blocks).
+
+-spec rpo(From, Blocks) -> Labels when
+      From :: [label()],
+      Blocks :: block_map(),
+      Labels :: [label()].
+
+rpo(From, Blocks) ->
+    Seen = cerl_sets:new(),
+    {Ls,_} = rpo_1(From, Blocks, Seen, []),
+    Ls.
+
+-spec rename_vars(Rename, [label()], block_map()) -> block_map() when
+      Rename :: rename_map() | rename_proplist().
+
+rename_vars(Rename, From, Blocks) when is_list(Rename) ->
+    rename_vars(maps:from_list(Rename), From, Blocks);
+rename_vars(Rename, From, Blocks) when is_map(Rename)->
+    Top = rpo(From, Blocks),
+    Preds = cerl_sets:from_list(Top),
+    F = fun(#b_set{op=phi,args=Args0}=Set) ->
+                Args = rename_phi_vars(Args0, Preds, Rename),
+                Set#b_set{args=Args};
+           (#b_set{args=Args0}=Set) ->
+                Args = [rename_var(A, Rename) || A <- Args0],
+                Set#b_set{args=Args};
+           (#b_switch{arg=Bool}=Sw) ->
+                Sw#b_switch{arg=rename_var(Bool, Rename)};
+           (#b_br{bool=Bool}=Br) ->
+                Br#b_br{bool=rename_var(Bool, Rename)};
+           (#b_ret{arg=Arg}=Ret) ->
+                Ret#b_ret{arg=rename_var(Arg, Rename)}
+        end,
+    map_instrs_1(Top, F, Blocks).
+
+%% split_blocks(Predicate, Blocks0, Count0) -> {Blocks,Count}.
+%%  Call Predicate(Instruction) for each instruction in all
+%%  blocks. If Predicate/1 returns true, split the block
+%%  before this instruction.
+
+-spec split_blocks(Pred, Blocks0, Count0) -> {Blocks,Count} when
+      Pred :: fun((b_set()) -> boolean()),
+      Blocks :: block_map(),
+      Count0 :: beam_ssa:label(),
+      Blocks0 :: block_map(),
+      Blocks :: block_map(),
+      Count :: beam_ssa:label().
+
+split_blocks(P, Blocks, Count) ->
+    Ls = beam_ssa:rpo(Blocks),
+    split_blocks_1(Ls, P, Blocks, Count).
+
+-spec trim_unreachable(Blocks0) -> Blocks when
+      Blocks0 :: block_map(),
+      Blocks :: block_map().
+
+%% trim_unreachable(Blocks0) -> Blocks.
+%%  Remove all unreachable blocks. Adjust all phi nodes so
+%%  they don't refer to blocks that has been removed or no
+%%  no longer branch to the phi node in question.
+
+trim_unreachable(Blocks) ->
+    %% Could perhaps be optimized if there is any need.
+    maps:from_list(linearize(Blocks)).
+
+%% update_phi_labels([BlockLabel], Old, New, Blocks0) -> Blocks.
+%%  In the given blocks, replace label Old in with New in all
+%%  phi nodes. This is useful after merging or splitting
+%%  blocks.
+
+-spec update_phi_labels(From, Old, New, Blocks0) -> Blocks when
+      From :: [label()],
+      Old :: label(),
+      New :: label(),
+      Blocks0 :: block_map(),
+      Blocks :: block_map().
+
+update_phi_labels([L|Ls], Old, New, Blocks0) ->
+    case Blocks0 of
+        #{L:=#b_blk{is=[#b_set{op=phi}|_]=Is0}=Blk0} ->
+            Is = update_phi_labels_is(Is0, Old, New),
+            Blk = Blk0#b_blk{is=Is},
+            Blocks = Blocks0#{L:=Blk},
+            update_phi_labels(Ls, Old, New, Blocks);
+        #{L:=#b_blk{}} ->
+            %% No phi nodes in this block.
+            update_phi_labels(Ls, Old, New, Blocks0)
+    end;
+update_phi_labels([], _, _, Blocks) -> Blocks.
+
+-spec used(b_blk() | b_set() | terminator()) -> [var_name()].
+
+used(#b_blk{is=Is,last=Last}) ->
+    used_1([Last|Is], ordsets:new());
+used(#b_br{bool=#b_var{}=V}) ->
+    [V];
+used(#b_ret{arg=#b_var{}=V}) ->
+    [V];
+used(#b_set{op=phi,args=Args}) ->
+    ordsets:from_list([V || {#b_var{}=V,_} <- Args]);
+used(#b_set{args=Args}) ->
+    ordsets:from_list(used_args(Args));
+used(#b_switch{arg=#b_var{}=V}) ->
+    [V];
+used(_) -> [].
+
+-spec definitions(Blocks :: block_map()) -> definition_map().
+definitions(Blocks) ->
+    fold_instrs_rpo(fun(#b_set{ dst = Var }=I, Acc) ->
+                            Acc#{Var => I};
+                       (_Terminator, Acc) ->
+                            Acc
+                    end, [0], #{}, Blocks).
+
+-spec uses(Blocks :: block_map()) -> usage_map().
+uses(Blocks) ->
+    uses([0], Blocks).
+
+-spec uses(From, Blocks) -> usage_map() when
+      From :: [label()],
+      Blocks :: block_map().
+uses(From, Blocks) ->
+    fold_rpo(fun fold_uses_block/3, From, #{}, Blocks).
+
+fold_uses_block(Lbl, #b_blk{is=Is,last=Last}, UseMap0) ->
+    F = fun(I, UseMap) ->
+                foldl(fun(Var, Acc) ->
+                              Uses0 = maps:get(Var, Acc, []),
+                              Uses = [{Lbl, I} | Uses0],
+                              maps:put(Var, Uses, Acc)
+                      end, UseMap, used(I))
+        end,
+    F(Last, foldl(F, UseMap0, Is)).
+
+%%%
+%%% Internal functions.
+%%%
+
+is_commutative('and') -> true;
+is_commutative('or') -> true;
+is_commutative('xor') -> true;
+is_commutative('band') -> true;
+is_commutative('bor') -> true;
+is_commutative('bxor') -> true;
+is_commutative('+') -> true;
+is_commutative('*') -> true;
+is_commutative('=:=') -> true;
+is_commutative('==') -> true;
+is_commutative('=/=') -> true;
+is_commutative('/=') -> true;
+is_commutative(_) -> false.
+
+def_used_1([#b_blk{is=Is,last=Last}|Bs], Preds, Def0, Used0) ->
+    {Def,Used1} = def_used_is(Is, Preds, Def0, Used0),
+    Used = ordsets:union(used(Last), Used1),
+    def_used_1(Bs, Preds, Def, Used);
+def_used_1([], _Preds, Def, Used) ->
+    {ordsets:from_list(Def),Used}.
+
+def_used_is([#b_set{op=phi,dst=Dst,args=Args}|Is],
+            Preds, Def0, Used0) ->
+    Def = [Dst|Def0],
+    %% We must be careful to only include variables that will
+    %% be used when arriving from one of the predecessor blocks
+    %% in Preds.
+    Used1 = [V || {#b_var{}=V,L} <- Args, cerl_sets:is_element(L, Preds)],
+    Used = ordsets:union(ordsets:from_list(Used1), Used0),
+    def_used_is(Is, Preds, Def, Used);
+def_used_is([#b_set{dst=Dst}=I|Is], Preds, Def0, Used0) ->
+    Def = [Dst|Def0],
+    Used = ordsets:union(used(I), Used0),
+    def_used_is(Is, Preds, Def, Used);
+def_used_is([], _Preds, Def, Used) ->
+    {Def,Used}.
+
+def_1([#b_blk{is=Is}|Bs], Def0) ->
+    Def = def_is(Is, Def0),
+    def_1(Bs, Def);
+def_1([], Def) ->
+    ordsets:from_list(Def).
+
+def_is([#b_set{dst=Dst}|Is], Def) ->
+    def_is(Is, [Dst|Def]);
+def_is([], Def) -> Def.
+
+dominators_1([{L,Preds}|Ls], Df, Doms) ->
+    DomPreds = [map_get(P, Doms) || P <- Preds, is_map_key(P, Doms)],
+    Dom = [L|dom_intersection(DomPreds, Df)],
+    dominators_1(Ls, Df, Doms#{L=>Dom});
+dominators_1([], _Df, Doms) -> Doms.
+
+dom_intersection([S], _Df) ->
+    S;
+dom_intersection([S|Ss], Df) ->
+    dom_intersection(S, Ss, Df).
+
+dom_intersection(S1, [S2|Ss], Df) ->
+    dom_intersection(dom_intersection_1(S1, S2, Df), Ss, Df);
+dom_intersection(S, [], _Df) -> S.
+
+dom_intersection_1([E1|Es1]=Set1, [E2|Es2]=Set2, Df) ->
+    %% Blocks are numbered in the order they are found in
+    %% reverse postorder.
+    #{E1:=Df1,E2:=Df2} = Df,
+    if Df1 > Df2 ->
+            dom_intersection_1(Es1, Set2, Df);
+       Df2 > Df1 ->
+            dom_intersection_1(Es2, Set1, Df);  %switch arguments!
+       true ->                                  %Set1 == Set2
+            %% The common suffix of the sets is the intersection.
+            Set1
+    end.
+
+number([L|Ls], N) ->
+    [{L,N}|number(Ls, N+1)];
+number([], _) -> [].
+
+fold_rpo_1([L|Ls], Fun, Blocks, Acc0) ->
+    Block = map_get(L, Blocks),
+    Acc = Fun(L, Block, Acc0),
+    fold_rpo_1(Ls, Fun, Blocks, Acc);
+fold_rpo_1([], _, _, Acc) -> Acc.
+
+fold_instrs_rpo_1([L|Ls], Fun, Blocks, Acc0) ->
+    #b_blk{is=Is,last=Last} = map_get(L, Blocks),
+    Acc1 = foldl(Fun, Acc0, Is),
+    Acc = Fun(Last, Acc1),
+    fold_instrs_rpo_1(Ls, Fun, Blocks, Acc);
+fold_instrs_rpo_1([], _, _, Acc) -> Acc.
+
+mapfold_instrs_rpo_1([L|Ls], Fun, Blocks0, Acc0) ->
+    #b_blk{is=Is0,last=Last0} = Block0 = map_get(L, Blocks0),
+    {Is,Acc1} = mapfoldl(Fun, Acc0, Is0),
+    {Last,Acc} = Fun(Last0, Acc1),
+    Block = Block0#b_blk{is=Is,last=Last},
+    Blocks = Blocks0#{L:=Block},
+    mapfold_instrs_rpo_1(Ls, Fun, Blocks, Acc);
+mapfold_instrs_rpo_1([], _, Blocks, Acc) ->
+    {Blocks,Acc}.
+
+flatmapfold_instrs_rpo_1([L|Ls], Fun, Blocks0, Acc0) ->
+    #b_blk{is=Is0,last=Last0} = Block0 = map_get(L, Blocks0),
+    {Is,Acc1} = flatmapfoldl(Fun, Acc0, Is0),
+    {[Last],Acc} = Fun(Last0, Acc1),
+    Block = Block0#b_blk{is=Is,last=Last},
+    Blocks = Blocks0#{L:=Block},
+    flatmapfold_instrs_rpo_1(Ls, Fun, Blocks, Acc);
+flatmapfold_instrs_rpo_1([], _, Blocks, Acc) ->
+    {Blocks,Acc}.
+
+linearize_1([L|Ls], Blocks, Seen0, Acc0) ->
+    case cerl_sets:is_element(L, Seen0) of
+        true ->
+            linearize_1(Ls, Blocks, Seen0, Acc0);
+        false ->
+            Seen1 = cerl_sets:add_element(L, Seen0),
+            Block = map_get(L, Blocks),
+            Successors = successors(Block),
+            {Acc,Seen} = linearize_1(Successors, Blocks, Seen1, Acc0),
+            linearize_1(Ls, Blocks, Seen, [{L,Block}|Acc])
+    end;
+linearize_1([], _, Seen, Acc) ->
+    {Acc,Seen}.
+
+fix_phis([{L,Blk0}|Bs], S) ->
+    Blk = case Blk0 of
+              #b_blk{is=[#b_set{op=phi}|_]=Is0} ->
+                  Is = fix_phis_1(Is0, L, S),
+                  Blk0#b_blk{is=Is};
+              #b_blk{} ->
+                  Blk0
+          end,
+    Successors = successors(Blk),
+    [{L,Blk}|fix_phis(Bs, S#{L=>Successors})];
+fix_phis([], _) -> [].
+
+fix_phis_1([#b_set{op=phi,args=Args0}=I|Is], L, S) ->
+    Args = [{Val,Pred} || {Val,Pred} <- Args0,
+                          is_successor(L, Pred, S)],
+    [I#b_set{args=Args}|fix_phis_1(Is, L, S)];
+fix_phis_1(Is, _, _) -> Is.
+
+is_successor(L, Pred, S) ->
+    case S of
+        #{Pred:=Successors} ->
+            member(L, Successors);
+        #{} ->
+            %% This block has been removed.
+            false
+    end.
+
+rpo_1([L|Ls], Blocks, Seen0, Acc0) ->
+    case cerl_sets:is_element(L, Seen0) of
+        true ->
+            rpo_1(Ls, Blocks, Seen0, Acc0);
+        false ->
+            Block = map_get(L, Blocks),
+            Seen1 = cerl_sets:add_element(L, Seen0),
+            Successors = successors(Block),
+            {Acc,Seen} = rpo_1(Successors, Blocks, Seen1, Acc0),
+            rpo_1(Ls, Blocks, Seen, [L|Acc])
+    end;
+rpo_1([], _, Seen, Acc) ->
+    {Acc,Seen}.
+
+rename_var(#b_var{}=Old, Rename) ->
+    case Rename of
+        #{Old:=New} -> New;
+        #{} -> Old
+    end;
+rename_var(#b_remote{mod=Mod0,name=Name0}=Remote, Rename) ->
+    Mod = rename_var(Mod0, Rename),
+    Name = rename_var(Name0, Rename),
+    Remote#b_remote{mod=Mod,name=Name};
+rename_var(Old, _) -> Old.
+
+rename_phi_vars([{Var,L}|As], Preds, Ren) ->
+    case cerl_sets:is_element(L, Preds) of
+        true ->
+            [{rename_var(Var, Ren),L}|rename_phi_vars(As, Preds, Ren)];
+        false ->
+            [{Var,L}|rename_phi_vars(As, Preds, Ren)]
+    end;
+rename_phi_vars([], _, _) -> [].
+
+map_instrs_1([L|Ls], Fun, Blocks0) ->
+    #b_blk{is=Is0,last=Last0} = Blk0 = map_get(L, Blocks0),
+    Is = [Fun(I) || I <- Is0],
+    Last = Fun(Last0),
+    Blk = Blk0#b_blk{is=Is,last=Last},
+    Blocks = Blocks0#{L:=Blk},
+    map_instrs_1(Ls, Fun, Blocks);
+map_instrs_1([], _, Blocks) -> Blocks.
+
+flatmapfoldl(F, Accu0, [Hd|Tail]) ->
+    {R,Accu1} = F(Hd, Accu0),
+    {Rs,Accu2} = flatmapfoldl(F, Accu1, Tail),
+    {R++Rs,Accu2};
+flatmapfoldl(_, Accu, []) -> {[],Accu}.
+
+split_blocks_1([L|Ls], P, Blocks0, Count0) ->
+    #b_blk{is=Is0} = Blk = map_get(L, Blocks0),
+    case split_blocks_is(Is0, P, []) of
+        {yes,Bef,Aft} ->
+            NewLbl = Count0,
+            Count = Count0 + 1,
+            Br = #b_br{bool=#b_literal{val=true},succ=NewLbl,fail=NewLbl},
+            BefBlk = Blk#b_blk{is=Bef,last=Br},
+            NewBlk = Blk#b_blk{is=Aft},
+            Blocks1 = Blocks0#{L:=BefBlk,NewLbl=>NewBlk},
+            Successors = successors(NewBlk),
+            Blocks = update_phi_labels(Successors, L, NewLbl, Blocks1),
+            split_blocks_1([NewLbl|Ls], P, Blocks, Count);
+        no ->
+            split_blocks_1(Ls, P, Blocks0, Count0)
+    end;
+split_blocks_1([], _, Blocks, Count) ->
+    {Blocks,Count}.
+
+split_blocks_is([I|Is], P, []) ->
+    split_blocks_is(Is, P, [I]);
+split_blocks_is([I|Is], P, Acc) ->
+    case P(I) of
+        true ->
+            {yes,reverse(Acc),[I|Is]};
+        false ->
+            split_blocks_is(Is, P, [I|Acc])
+    end;
+split_blocks_is([], _, _) -> no.
+
+update_phi_labels_is([#b_set{op=phi,args=Args0}=I0|Is], Old, New) ->
+    Args = [{Arg,rename_label(Lbl, Old, New)} || {Arg,Lbl} <- Args0],
+    I = I0#b_set{args=Args},
+    [I|update_phi_labels_is(Is, Old, New)];
+update_phi_labels_is(Is, _, _) -> Is.
+
+rename_label(Old, Old, New) -> New;
+rename_label(Lbl, _Old, _New) -> Lbl.
+
+used_args([#b_var{}=V|As]) ->
+    [V|used_args(As)];
+used_args([#b_remote{mod=Mod,name=Name}|As]) ->
+    used_args([Mod,Name|As]);
+used_args([_|As]) ->
+    used_args(As);
+used_args([]) -> [].
+
+used_1([H|T], Used0) ->
+    Used = ordsets:union(used(H), Used0),
+    used_1(T, Used);
+used_1([], Used) -> Used.
diff --git a/lib/compiler/src/beam_ssa.hrl b/lib/compiler/src/beam_ssa.hrl
new file mode 100644
index 0000000000..fa76b08453
--- /dev/null
+++ b/lib/compiler/src/beam_ssa.hrl
@@ -0,0 +1,66 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2018. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+-record(b_module, {anno=#{} :: beam_ssa:anno(),
+                   name :: module(),
+                   exports :: [{atom(),arity()}],
+                   attributes :: list(),
+                   body :: [beam_ssa:b_function()]}).
+-record(b_function, {anno=#{} :: beam_ssa:anno(),
+                     args :: [beam_ssa:b_var()],
+                     bs :: #{beam_ssa:label():=beam_ssa:b_blk()},
+                     cnt :: beam_ssa:label()}).
+
+-record(b_blk, {anno=#{} :: beam_ssa:anno(),
+                is :: [beam_ssa:b_set()],
+                last :: beam_ssa:terminator()}).
+-record(b_set, {anno=#{} :: beam_ssa:anno(),
+                dst=none :: 'none'|beam_ssa:b_var(),
+                op :: beam_ssa:op(),
+                args=[] :: [beam_ssa:argument()]}).
+
+%% Terminators.
+-record(b_ret, {anno=#{} :: beam_ssa:anno(),
+                arg :: beam_ssa:value()}).
+
+-record(b_br, {anno=#{},
+               bool :: beam_ssa:value(),
+               succ :: beam_ssa:label(),
+               fail :: beam_ssa:label()}).
+
+-record(b_switch, {anno=#{} :: beam_ssa:anno(),
+                   arg :: beam_ssa:value(),
+                   fail :: beam_ssa:label(),
+                   list :: [{beam_ssa:b_literal(),beam_ssa:label()}]}).
+
+%% Values.
+-record(b_var, {name :: beam_ssa:var_name()}).
+
+-record(b_literal, {val :: beam_ssa:literal_value()}).
+
+-record(b_remote, {mod   :: beam_ssa:value(),
+                   name  :: beam_ssa:value(),
+                   arity :: non_neg_integer()}).
+
+-record(b_local, {name  :: beam_ssa:b_literal(),
+                  arity :: non_neg_integer()}).
+
+%% If this block exists, it calls erlang:error(badarg).
+-define(BADARG_BLOCK, 1).
diff --git a/lib/compiler/src/beam_ssa_bsm.erl b/lib/compiler/src/beam_ssa_bsm.erl
new file mode 100644
index 0000000000..382e6f635e
--- /dev/null
+++ b/lib/compiler/src/beam_ssa_bsm.erl
@@ -0,0 +1,1046 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2018. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+%%%
+%%% This pass optimizes bit syntax matching, and is centered around the concept
+%%% of "match context reuse" which is best explained through example. To put it
+%%% shortly we attempt to turn this:
+%%%
+%%%    <<0,B/bits>> = A,
+%%%    <<1,C/bits>> = B,
+%%%    <<D,_/bits>> = C,
+%%%    D.
+%%%
+%%% ... Into this:
+%%%
+%%%    <<0,1,D,_/bits>>=A,
+%%%    D.
+%%%
+%%% Which is much faster as it avoids the creation of intermediate terms. This
+%%% is especially noticeable in loops where such garbage is generated on each
+%%% iteration.
+%%%
+%%% The optimization itself is very simple and can be applied whenever there's
+%%% matching on the tail end of a binary; instead of creating a new binary and
+%%% starting a new match context on it, we reuse the match context used to
+%%% extract the tail and avoid the creation of both objects.
+%%%
+%%% The catch is that a match context isn't a proper type and nothing outside
+%%% of bit syntax match operations can handle them. We therefore need to make
+%%% sure that they never "leak" into other instructions, and most of the pass
+%%% revolves around getting around that limitation.
+%%%
+%%% Unlike most other passes we look at the whole module so we can combine
+%%% matches across function boundaries, greatly increasing the performance of
+%%% complex matches and loops.
+%%%
+
+-module(beam_ssa_bsm).
+
+-export([module/2, format_error/1]).
+
+-include("beam_ssa.hrl").
+
+-import(lists, [member/2, reverse/1, splitwith/2, map/2, foldl/3, mapfoldl/3,
+                nth/2, max/1, unzip/1]).
+
+-spec format_error(term()) -> nonempty_string().
+
+format_error(OptInfo) ->
+    format_opt_info(OptInfo).
+
+-spec module(Module, Options) -> Result when
+      Module :: beam_ssa:b_module(),
+      Options :: [compile:option()],
+      Result :: {ok, beam_ssa:b_module(), list()}.
+
+-define(PASS(N), {N,fun N/1}).
+
+module(#b_module{body=Fs0}=Module, Opts) ->
+    ModInfo = analyze_module(Module),
+
+    %% combine_matches is repeated after accept_context_args as the control
+    %% flow changes can enable further optimizations, as in the example below:
+    %%
+    %%    a(<<0,X/binary>>) -> a(X);
+    %%    a(A) when bit_size(A) =:= 52 -> bar;
+    %%    a(<<1,X/binary>>) -> X. %% Match context will be reused here when
+    %%                            %% when repeated.
+
+    {Fs, _} = compile:run_sub_passes(
+                [?PASS(combine_matches),
+                 ?PASS(accept_context_args),
+                 ?PASS(combine_matches),
+                 ?PASS(allow_context_passthrough),
+                 ?PASS(skip_outgoing_tail_extraction),
+                 ?PASS(annotate_context_parameters)],
+                {Fs0, ModInfo}),
+
+    Ws = case proplists:get_bool(bin_opt_info, Opts) of
+             true -> collect_opt_info(Fs);
+             false -> []
+         end,
+
+    {ok, Module#b_module{body=Fs}, Ws}.
+
+-type module_info() :: #{ func_id() => func_info() }.
+
+-type func_id() :: {Name :: atom(), Arity :: non_neg_integer()}.
+
+-type func_info() :: #{ has_bsm_ops => boolean(),
+                        parameters => [#b_var{}],
+                        parameter_info => #{ #b_var{} => param_info() } }.
+
+-type param_info() :: suitable_for_reuse |
+                      {Problem :: atom(), Where :: term()}.
+
+-spec analyze_module(#b_module{}) -> module_info().
+
+analyze_module(#b_module{body=Fs}) ->
+    foldl(fun(#b_function{args=Parameters}=F, I) ->
+                  FuncInfo = #{ has_bsm_ops => has_bsm_ops(F),
+                                parameters => Parameters,
+                                parameter_info => #{} },
+                  FuncId = get_fa(F),
+                  I#{ FuncId => FuncInfo }
+          end, #{}, Fs).
+
+has_bsm_ops(#b_function{bs=Blocks}) ->
+    hbo_blocks(maps:to_list(Blocks)).
+
+hbo_blocks([{_,#b_blk{is=Is}} | Blocks]) ->
+    case hbo_is(Is) of
+        false -> hbo_blocks(Blocks);
+        true -> true
+    end;
+hbo_blocks([]) ->
+    false.
+
+hbo_is([#b_set{op=bs_start_match} | _]) -> true;
+hbo_is([_I | Is]) -> hbo_is(Is);
+hbo_is([]) -> false.
+
+%% Checks whether it's legal to make a call with the given argument as a match
+%% context, returning the param_info() of the relevant parameter.
+-spec check_context_call(#b_set{}, Arg, CtxChain, ModInfo) -> param_info() when
+      Arg :: #b_var{},
+      CtxChain :: [#b_var{}],
+      ModInfo :: module_info().
+check_context_call(#b_set{args=Args}, Arg, CtxChain, ModInfo) ->
+    Aliases = [Arg | CtxChain],
+    ccc_1(Args, Arg, Aliases, ModInfo).
+
+ccc_1([#b_local{}=Call | Args], Ctx, Aliases, ModInfo) ->
+    %% Matching operations assume that their context isn't aliased (as in
+    %% pointer aliasing), so we must reject calls whose arguments contain more
+    %% than one reference to the context.
+    %%
+    %% TODO: Try to fall back to passing binaries in these cases. Partial reuse
+    %% is better than nothing.
+    UseCount = foldl(fun(Arg, C) ->
+                             case member(Arg, Aliases) of
+                                 true -> C + 1;
+                                 false -> C
+                             end
+                     end, 0, Args),
+    if
+        UseCount =:= 1 ->
+            #b_local{name=#b_literal{val=Name},arity=Arity} = Call,
+            Callee = {Name, Arity},
+
+            ParamInfo = funcinfo_get(Callee, parameter_info, ModInfo),
+            Parameters = funcinfo_get(Callee, parameters, ModInfo),
+            Parameter = nth(1 + arg_index(Ctx, Args), Parameters),
+
+            case maps:find(Parameter, ParamInfo) of
+                {ok, suitable_for_reuse} ->
+                    suitable_for_reuse;
+                {ok, Other} ->
+                    {unsuitable_call, {Call, Other}};
+                error ->
+                    {no_match_on_entry, Call}
+            end;
+        UseCount > 1 ->
+            {multiple_uses_in_call, Call}
+    end;
+ccc_1([#b_remote{}=Call | _Args], _Ctx, _CtxChain, _ModInfo) ->
+    {remote_call, Call};
+ccc_1([Fun | _Args], _Ctx, _CtxChain, _ModInfo) ->
+    %% TODO: It may be possible to support this in the future for locally
+    %% defined funs, including ones with free variables.
+    {fun_call, Fun}.
+
+%% Returns the index of Var in Args.
+arg_index(Var, Args) -> arg_index_1(Var, Args, 0).
+
+arg_index_1(Var, [Var | _Args], Index) -> Index;
+arg_index_1(Var, [_Arg | Args], Index) -> arg_index_1(Var, Args, Index + 1).
+
+is_tail_binary(#b_set{op=bs_match,args=[#b_literal{val=binary} | Rest]}) ->
+    member(#b_literal{val=all}, Rest);
+is_tail_binary(#b_set{op=bs_get_tail}) ->
+    true;
+is_tail_binary(_) ->
+    false.
+
+is_tail_binary(#b_var{}=Var, Defs) ->
+    case find_match_definition(Var, Defs) of
+        {ok, Def} -> is_tail_binary(Def);
+        _ -> false
+    end;
+is_tail_binary(_Literal, _Defs) ->
+    false.
+
+assert_match_context(#b_var{}=Var, Defs) ->
+    case maps:find(Var, Defs) of
+        {ok, #b_set{op=bs_match,args=[_,#b_var{}=Ctx|_]}} ->
+            assert_match_context(Ctx, Defs);
+        {ok, #b_set{op=bs_start_match}} ->
+            ok
+    end.
+
+find_match_definition(#b_var{}=Var, Defs) ->
+    case maps:find(Var, Defs) of
+        {ok, #b_set{op=bs_extract,args=[Ctx]}} -> maps:find(Ctx, Defs);
+        {ok, #b_set{op=bs_get_tail}=Def} -> {ok, Def};
+        _ -> error
+    end.
+
+%% Returns a list of all contexts that were used to extract Var.
+context_chain_of(#b_var{}=Var, Defs) ->
+    case maps:find(Var, Defs) of
+        {ok, #b_set{op=bs_match,args=[_,#b_var{}=Ctx|_]}} ->
+            [Ctx | context_chain_of(Ctx, Defs)];
+        {ok, #b_set{op=bs_get_tail,args=[Ctx]}} ->
+            [Ctx | context_chain_of(Ctx, Defs)];
+        {ok, #b_set{op=bs_extract,args=[Ctx]}} ->
+            [Ctx | context_chain_of(Ctx, Defs)];
+        _ ->
+            []
+    end.
+
+%% Grabs the match context used to produce the given variable.
+match_context_of(#b_var{}=Var, Defs) ->
+    Ctx = match_context_of_1(Var, Defs),
+    assert_match_context(Ctx, Defs),
+    Ctx.
+
+match_context_of_1(Var, Defs) ->
+    case maps:get(Var, Defs) of
+        #b_set{op=bs_extract,args=[#b_var{}=Ctx0]} ->
+            #b_set{op=bs_match,
+                   args=[_,#b_var{}=Ctx|_]} = maps:get(Ctx0, Defs),
+            Ctx;
+        #b_set{op=bs_get_tail,args=[#b_var{}=Ctx]} ->
+            Ctx
+    end.
+
+funcinfo_get(#b_function{}=F, Attribute, ModInfo) ->
+    funcinfo_get(get_fa(F), Attribute, ModInfo);
+funcinfo_get({_,_}=Key, Attribute, ModInfo) ->
+    FuncInfo = maps:get(Key, ModInfo),
+    maps:get(Attribute, FuncInfo).
+
+funcinfo_set(#b_function{}=F, Attribute, Value, ModInfo) ->
+    funcinfo_set(get_fa(F), Attribute, Value, ModInfo);
+funcinfo_set(Key, Attribute, Value, ModInfo) ->
+    FuncInfo = maps:put(Attribute, Value, maps:get(Key, ModInfo, #{})),
+    maps:put(Key, FuncInfo, ModInfo).
+
+get_fa(#b_function{ anno = Anno }) ->
+    {_,Name,Arity} = maps:get(func_info, Anno),
+    {Name,Arity}.
+
+%% Replaces matched-out binaries with aliases that are lazily converted to
+%% binary form when used, allowing us to keep the "match path" free of binary
+%% creation.
+
+-spec alias_matched_binaries(Blocks, Counter, AliasMap) -> Result when
+      Blocks :: beam_ssa:block_map(),
+      Counter :: non_neg_integer(),
+      AliasMap :: match_alias_map(),
+      Result :: {Blocks, Counter}.
+
+-type match_alias_map() ::
+        #{ Binary :: #b_var{} =>
+                     { %% Replace all uses of Binary with an alias after this
+                       %% label.
+                       AliasAfter :: beam_ssa:label(),
+                       %% The match context whose tail is equal to Binary.
+                       Context :: #b_var{} } }.
+
+%% Keeps track of the promotions we need to insert. They're partially keyed by
+%% location because they may not be valid on all execution paths and we may
+%% need to add redundant promotions in some cases.
+-type promotion_map() ::
+        #{ { PromoteAt :: beam_ssa:label(),
+             Variable :: #b_var{} } =>
+               Instruction :: #b_set{} }.
+
+-record(amb, { dominators :: beam_ssa:dominator_map(),
+               match_aliases :: match_alias_map(),
+               cnt :: non_neg_integer(),
+               promotions = #{} :: promotion_map() }).
+
+alias_matched_binaries(Blocks0, Counter, AliasMap) when AliasMap =/= #{} ->
+    {Dominators, _} = beam_ssa:dominators(Blocks0),
+    State0 = #amb{ dominators = Dominators,
+                   match_aliases = AliasMap,
+                   cnt = Counter },
+    {Blocks, State} = beam_ssa:mapfold_blocks_rpo(fun amb_1/3, [0], State0,
+                                                  Blocks0),
+    {amb_insert_promotions(Blocks, State), State#amb.cnt};
+alias_matched_binaries(Blocks, Counter, _AliasMap) ->
+    {Blocks, Counter}.
+
+amb_1(Lbl, #b_blk{is=Is0,last=Last0}=Block, State0) ->
+    {Is, State1} = mapfoldl(fun(I, State) ->
+                                    amb_assign_set(I, Lbl, State)
+                            end, State0, Is0),
+    {Last, State} = amb_assign_last(Last0, Lbl, State1),
+    {Block#b_blk{is=Is,last=Last}, State}.
+
+amb_assign_set(#b_set{op=phi,args=Args0}=I, _Lbl, State0) ->
+    %% Phi node aliases are relative to their source block, not their
+    %% containing block.
+    {Args, State} =
+        mapfoldl(fun({Arg0, Lbl}, Acc) ->
+                         {Arg, State} = amb_get_alias(Arg0, Lbl, Acc),
+                         {{Arg, Lbl}, State}
+                 end, State0, Args0),
+    {I#b_set{args=Args}, State};
+amb_assign_set(#b_set{args=Args0}=I, Lbl, State0) ->
+    {Args, State} = mapfoldl(fun(Arg0, Acc) ->
+                                     amb_get_alias(Arg0, Lbl, Acc)
+                             end, State0, Args0),
+    {I#b_set{args=Args}, State}.
+
+amb_assign_last(#b_ret{arg=Arg0}=T, Lbl, State0) ->
+    {Arg, State} = amb_get_alias(Arg0, Lbl, State0),
+    {T#b_ret{arg=Arg}, State};
+amb_assign_last(#b_switch{arg=Arg0}=T, Lbl, State0) ->
+    {Arg, State} = amb_get_alias(Arg0, Lbl, State0),
+    {T#b_switch{arg=Arg}, State};
+amb_assign_last(#b_br{bool=Arg0}=T, Lbl, State0) ->
+    {Arg, State} = amb_get_alias(Arg0, Lbl, State0),
+    {T#b_br{bool=Arg}, State}.
+
+amb_get_alias(#b_var{}=Arg, Lbl, State) ->
+    case maps:find(Arg, State#amb.match_aliases) of
+        {ok, {AliasAfter, Context}} ->
+            %% Our context may not have been created yet, so we skip assigning
+            %% an alias unless the given block is among our dominators.
+            Dominators = maps:get(Lbl, State#amb.dominators),
+            case member(AliasAfter, Dominators) of
+                true -> amb_create_alias(Arg, Context, Lbl, State);
+                false -> {Arg, State}
+            end;
+        error ->
+            {Arg, State}
+    end;
+amb_get_alias(#b_remote{mod=Mod0,name=Name0}=Arg0, Lbl, State0) ->
+    {Mod, State1} = amb_get_alias(Mod0, Lbl, State0),
+    {Name, State} = amb_get_alias(Name0, Lbl, State1),
+    Arg = Arg0#b_remote{mod=Mod,name=Name},
+    {Arg, State};
+amb_get_alias(Arg, _Lbl, State) ->
+    {Arg, State}.
+
+amb_create_alias(#b_var{}=Arg0, Context, Lbl, State0) ->
+    Dominators = maps:get(Lbl, State0#amb.dominators),
+    Promotions0 = State0#amb.promotions,
+
+    PrevPromotions =
+        [maps:get({Dom, Arg0}, Promotions0)
+         || Dom <- Dominators, is_map_key({Dom, Arg0}, Promotions0)],
+
+    case PrevPromotions of
+        [_|_] ->
+            %% We've already created an alias prior to this block, so we'll
+            %% grab the most recent one to minimize stack use.
+
+            #b_set{dst=Alias} = max(PrevPromotions),
+            {Alias, State0};
+        [] ->
+            %% If we haven't created an alias we need to do so now. The
+            %% promotion will be inserted later by amb_insert_promotions/2.
+
+            Counter = State0#amb.cnt,
+            Alias = #b_var{name={'@ssa_bsm_alias', Counter}},
+            Promotion = #b_set{op=bs_get_tail,dst=Alias,args=[Context]},
+
+            Promotions = maps:put({Lbl, Arg0}, Promotion, Promotions0),
+            State = State0#amb{ promotions=Promotions, cnt=Counter+1 },
+
+            {Alias, State}
+    end.
+
+amb_insert_promotions(Blocks0, State) ->
+    F = fun({Lbl, #b_var{}}, Promotion, Blocks) ->
+                Block = maps:get(Lbl, Blocks),
+
+                Alias = Promotion#b_set.dst,
+                {Before, After} = splitwith(
+                                    fun(#b_set{args=Args}) ->
+                                            not is_var_in_args(Alias, Args)
+                                    end, Block#b_blk.is),
+                Is = Before ++ [Promotion | After],
+
+                maps:put(Lbl, Block#b_blk{is=Is}, Blocks)
+        end,
+    maps:fold(F, Blocks0, State#amb.promotions).
+
+is_var_in_args(Var, [Var | _]) -> true;
+is_var_in_args(Var, [#b_remote{name=Var} | _]) -> true;
+is_var_in_args(Var, [#b_remote{mod=Var} | _]) -> true;
+is_var_in_args(Var, [_ | Args]) -> is_var_in_args(Var, Args);
+is_var_in_args(_Var, []) -> false.
+
+%%%
+%%% Subpasses
+%%%
+
+%% Removes superflous chained bs_start_match instructions in the same
+%% function. When matching on an extracted tail binary, or on a binary we've
+%% already matched on, we reuse the original match context.
+%%
+%% This pass runs first since it makes subsequent optimizations more effective
+%% by removing spots where promotion would be required.
+
+-type prior_match_map() ::
+        #{ Binary :: #b_var{} =>
+                     [{ %% The context and success label of a previous
+                        %% bs_start_match made on this binary.
+                        ValidAfter :: beam_ssa:label(),
+                        Context :: #b_var{} }] }.
+
+-record(cm, { definitions :: beam_ssa:definition_map(),
+              dominators :: beam_ssa:dominator_map(),
+              blocks :: beam_ssa:block_map(),
+              match_aliases = #{} :: match_alias_map(),
+              prior_matches = #{} :: prior_match_map(),
+              renames = #{} :: beam_ssa:rename_map() }).
+
+combine_matches({Fs0, ModInfo}) ->
+    Fs = map(fun(F) -> combine_matches(F, ModInfo) end, Fs0),
+    {Fs, ModInfo}.
+
+combine_matches(#b_function{bs=Blocks0,cnt=Counter0}=F, ModInfo) ->
+    case funcinfo_get(F, has_bsm_ops, ModInfo) of
+        true ->
+            {Dominators, _} = beam_ssa:dominators(Blocks0),
+            {Blocks1, State} =
+                beam_ssa:mapfold_blocks_rpo(
+                  fun(Lbl, #b_blk{is=Is0}=Block0, State0) ->
+                          {Is, State} = cm_1(Is0, [], Lbl, State0),
+                          {Block0#b_blk{is=Is}, State}
+                  end, [0],
+                  #cm{ definitions = beam_ssa:definitions(Blocks0),
+                       dominators = Dominators,
+                       blocks = Blocks0 },
+                  Blocks0),
+
+            Blocks2 = beam_ssa:rename_vars(State#cm.renames, [0], Blocks1),
+
+            {Blocks, Counter} = alias_matched_binaries(Blocks2, Counter0,
+                                                       State#cm.match_aliases),
+
+            F#b_function{ bs=Blocks, cnt=Counter };
+        false ->
+            F
+    end.
+
+cm_1([#b_set{ op=bs_start_match,
+              dst=Ctx,
+              args=[Src] },
+      #b_set{ op=succeeded,
+              dst=Bool,
+              args=[Ctx] }]=MatchSeq, Acc0, Lbl, State0) ->
+    Acc = reverse(Acc0),
+    case is_tail_binary(Src, State0#cm.definitions) of
+        true -> cm_combine_tail(Src, Ctx, Bool, Acc, State0);
+        false -> cm_handle_priors(Src, Ctx, Bool, Acc, MatchSeq, Lbl, State0)
+    end;
+cm_1([I | Is], Acc, Lbl, State) ->
+    cm_1(Is, [I | Acc], Lbl, State);
+cm_1([], Acc, _Lbl, State) ->
+    {reverse(Acc), State}.
+
+%% If we're dominated by at least one match on the same source, we can reuse
+%% the context created by that match.
+cm_handle_priors(Src, DstCtx, Bool, Acc, MatchSeq, Lbl, State0) ->
+    PriorCtxs = case maps:find(Src, State0#cm.prior_matches) of
+                    {ok, Priors} ->
+                        %% We've seen other match contexts on this source, but
+                        %% we can only consider the ones whose success path
+                        %% dominate us.
+                        Dominators = maps:get(Lbl, State0#cm.dominators, []),
+                        [Ctx || {ValidAfter, Ctx} <- Priors,
+                                member(ValidAfter, Dominators)];
+                    error ->
+                        []
+                end,
+    case PriorCtxs of
+        [Ctx|_] ->
+            Renames0 = State0#cm.renames,
+            Renames = Renames0#{ Bool => #b_literal{val=true}, DstCtx => Ctx },
+            {Acc, State0#cm{ renames = Renames }};
+        [] ->
+            %% Since we lack a prior match, we need to register this one in
+            %% case we dominate another.
+            State = cm_register_prior(Src, DstCtx, Lbl, State0),
+            {Acc ++ MatchSeq, State}
+    end.
+
+cm_register_prior(Src, DstCtx, Lbl, State) ->
+    Block = maps:get(Lbl, State#cm.blocks),
+    #b_br{succ=ValidAfter} = Block#b_blk.last,
+
+    Priors0 = maps:get(Src, State#cm.prior_matches, []),
+    Priors = [{ValidAfter, DstCtx} | Priors0],
+
+    PriorMatches = maps:put(Src, Priors, State#cm.prior_matches),
+    State#cm{ prior_matches = PriorMatches }.
+
+cm_combine_tail(Src, DstCtx, Bool, Acc, State0) ->
+    SrcCtx = match_context_of(Src, State0#cm.definitions),
+
+    %% We replace the source with a context alias as it normally won't be used
+    %% on the happy path after being matched, and the added cost of conversion
+    %% is negligible if it is.
+    Aliases = maps:put(Src, {0, SrcCtx}, State0#cm.match_aliases),
+
+    Renames0 = State0#cm.renames,
+    Renames = Renames0#{ Bool => #b_literal{val=true}, DstCtx => SrcCtx },
+
+    State = State0#cm{ match_aliases = Aliases, renames = Renames },
+
+    {Acc, State}.
+
+%% Lets functions accept match contexts as arguments. The parameter must be
+%% unused before the bs_start_match instruction, and it must be matched in the
+%% first block.
+
+-record(aca, { unused_parameters :: ordsets:ordset(#b_var{}),
+               counter :: non_neg_integer(),
+               parameter_info = #{} :: #{ #b_var{} => param_info() },
+               match_aliases = #{} :: match_alias_map() }).
+
+accept_context_args({Fs, ModInfo}) ->
+    mapfoldl(fun accept_context_args/2, ModInfo, Fs).
+
+accept_context_args(#b_function{bs=Blocks0}=F, ModInfo0) ->
+    case funcinfo_get(F, has_bsm_ops, ModInfo0) of
+        true ->
+            Parameters = ordsets:from_list(funcinfo_get(F, parameters, ModInfo0)),
+            State0 = #aca{ unused_parameters = Parameters,
+                           counter = F#b_function.cnt },
+
+            {Blocks1, State} = aca_1(Blocks0, State0),
+            {Blocks, Counter} = alias_matched_binaries(Blocks1,
+                                                       State#aca.counter,
+                                                       State#aca.match_aliases),
+
+            ModInfo = funcinfo_set(F, parameter_info, State#aca.parameter_info,
+                                   ModInfo0),
+
+            {F#b_function{bs=Blocks,cnt=Counter}, ModInfo};
+        false ->
+            {F, ModInfo0}
+    end.
+
+aca_1(Blocks, State) ->
+    %% We only handle block 0 as we don't yet support starting a match after a
+    %% test. This is generally good enough as the sys_core_bsm pass makes the
+    %% match instruction come first if possible, and it's rare for a function
+    %% to binary-match several parameters at once.
+    EntryBlock = maps:get(0, Blocks),
+    aca_enable_reuse(EntryBlock#b_blk.is, EntryBlock, Blocks, [], State).
+
+aca_enable_reuse([#b_set{op=bs_start_match,args=[Src]}=I0 | Rest],
+                 EntryBlock, Blocks0, Acc, State0) ->
+    case aca_is_reuse_safe(Src, State0) of
+        true ->
+            {I, Last, Blocks1, State} =
+                aca_reuse_context(I0, EntryBlock, Blocks0, State0),
+
+            Is = reverse([I|Acc]) ++ Rest,
+            Blocks = maps:put(0, EntryBlock#b_blk{is=Is,last=Last}, Blocks1),
+
+            {Blocks, State};
+        false ->
+            {Blocks0, State0}
+    end;
+aca_enable_reuse([I | Is], EntryBlock, Blocks, Acc, State0) ->
+    UnusedParams0 = State0#aca.unused_parameters,
+    case ordsets:intersection(UnusedParams0, beam_ssa:used(I)) of
+        [] ->
+            aca_enable_reuse(Is, EntryBlock, Blocks, [I | Acc], State0);
+        PrematureUses ->
+            UnusedParams = ordsets:subtract(UnusedParams0, PrematureUses),
+
+            %% Mark the offending parameters as unsuitable for context reuse.
+            ParamInfo = foldl(fun(A, Ps) ->
+                                      maps:put(A, {used_before_match, I}, Ps)
+                              end, State0#aca.parameter_info, PrematureUses),
+
+            State = State0#aca{ unused_parameters = UnusedParams,
+                                parameter_info = ParamInfo },
+            aca_enable_reuse(Is, EntryBlock, Blocks, [I | Acc], State)
+    end;
+aca_enable_reuse([], _EntryBlock, Blocks, _Acc, State) ->
+    {Blocks, State}.
+
+aca_is_reuse_safe(Src, State) ->
+    %% Context reuse is unsafe unless all uses are dominated by the start_match
+    %% instruction. Since we only process block 0 it's enough to check if
+    %% they're unused so far.
+    ordsets:is_element(Src, State#aca.unused_parameters).
+
+aca_reuse_context(#b_set{dst=Dst, args=[Src]}=I0, Block, Blocks0, State0) ->
+    %% When matching fails on a reused context it needs to be converted back
+    %% to a binary. We only need to do this on the success path since it can't
+    %% be a context on the type failure path, but it's very common for these
+    %% to converge which requires special handling.
+    {State1, Last, Blocks} =
+        aca_handle_convergence(Src, State0, Block#b_blk.last, Blocks0),
+
+    Aliases = maps:put(Src, {Last#b_br.succ, Dst}, State1#aca.match_aliases),
+    ParamInfo = maps:put(Src, suitable_for_reuse, State1#aca.parameter_info),
+
+    State = State1#aca{ match_aliases = Aliases,
+                        parameter_info = ParamInfo },
+
+    I = beam_ssa:add_anno(accepts_match_contexts, true, I0),
+
+    {I, Last, Blocks, State}.
+
+aca_handle_convergence(Src, State0, Last0, Blocks0) ->
+    #b_br{fail=Fail0,succ=Succ0} = Last0,
+
+    SuccPath = beam_ssa:rpo([Succ0], Blocks0),
+    FailPath = beam_ssa:rpo([Fail0], Blocks0),
+
+    %% The promotion logic in alias_matched_binaries breaks down if the source
+    %% is used after the fail/success paths converge, as we have no way to tell
+    %% whether the source is a match context or something else past that point.
+    %%
+    %% We could handle this through clever insertion of phi nodes but it's
+    %% far simpler to copy either branch in its entirety. It doesn't matter
+    %% which one as long as they become disjoint.
+    ConvergedPaths = ordsets:intersection(
+                       ordsets:from_list(SuccPath),
+                       ordsets:from_list(FailPath)),
+
+    case maps:is_key(Src, beam_ssa:uses(ConvergedPaths, Blocks0)) of
+        true ->
+            case shortest(SuccPath, FailPath) of
+                left ->
+                    {Succ, Blocks, Counter} =
+                        aca_copy_successors(Succ0, Blocks0, State0#aca.counter),
+                    State = State0#aca{ counter = Counter },
+                    {State, Last0#b_br{succ=Succ}, Blocks};
+                right ->
+                    {Fail, Blocks, Counter} =
+                        aca_copy_successors(Fail0, Blocks0, State0#aca.counter),
+                    State = State0#aca{ counter = Counter },
+                    {State, Last0#b_br{fail=Fail}, Blocks}
+            end;
+        false ->
+            {State0, Last0, Blocks0}
+    end.
+
+shortest([_|As], [_|Bs]) -> shortest(As, Bs);
+shortest([], _) -> left;
+shortest(_, []) -> right.
+
+%% Copies all successor blocks of Lbl, returning the label to the entry block
+%% of this copy. Since the copied blocks aren't referenced anywhere else, they
+%% are all guaranteed to be dominated by Lbl.
+aca_copy_successors(Lbl0, Blocks0, Counter0) ->
+    %% Building the block rename map up front greatly simplifies phi node
+    %% handling.
+    Path = beam_ssa:rpo([Lbl0], Blocks0),
+    {BRs, Counter1} = aca_cs_build_brs(Path, Counter0, #{}),
+    {Blocks, Counter} = aca_cs_1(Path, Blocks0, Counter1, #{}, BRs, #{}),
+    Lbl = maps:get(Lbl0, BRs),
+    {Lbl, Blocks, Counter}.
+
+aca_cs_build_brs([Lbl | Path], Counter0, Acc) ->
+    aca_cs_build_brs(Path, Counter0 + 1, maps:put(Lbl, Counter0, Acc));
+aca_cs_build_brs([], Counter, Acc) ->
+    {Acc, Counter}.
+
+aca_cs_1([Lbl0 | Path], Blocks, Counter0, VRs0, BRs, Acc0) ->
+    Block0 = maps:get(Lbl0, Blocks),
+    Lbl = maps:get(Lbl0, BRs),
+    {VRs, Block, Counter} = aca_cs_block(Block0, Counter0, VRs0, BRs),
+    Acc = maps:put(Lbl, Block, Acc0),
+    aca_cs_1(Path, Blocks, Counter, VRs, BRs, Acc);
+aca_cs_1([], Blocks, Counter, _VRs, _BRs, Acc) ->
+    {maps:merge(Blocks, Acc), Counter}.
+
+aca_cs_block(#b_blk{is=Is0,last=Last0}=Block0, Counter0, VRs0, BRs) ->
+    {VRs, Is, Counter} = aca_cs_is(Is0, Counter0, VRs0, BRs, []),
+    Last = aca_cs_last(Last0, VRs, BRs),
+    Block = Block0#b_blk{is=Is,last=Last},
+    {VRs, Block, Counter}.
+
+aca_cs_is([#b_set{op=Op,
+                  dst=Dst0,
+                  args=Args0}=I0 | Is],
+          Counter0, VRs0, BRs, Acc) ->
+    Args = case Op of
+               phi -> aca_cs_args_phi(Args0, VRs0, BRs);
+               _ -> aca_cs_args(Args0, VRs0)
+           end,
+    Counter = Counter0 + 1,
+    Dst = #b_var{name={'@ssa_bsm_aca',Counter}},
+    I = I0#b_set{dst=Dst,args=Args},
+    VRs = maps:put(Dst0, Dst, VRs0),
+    aca_cs_is(Is, Counter, VRs, BRs, [I | Acc]);
+aca_cs_is([], Counter, VRs, _BRs, Acc) ->
+    {VRs, reverse(Acc), Counter}.
+
+aca_cs_last(#b_switch{arg=Arg0,list=Switch0,fail=Fail0}=Sw, VRs, BRs) ->
+    Switch = [{Literal, maps:get(Lbl, BRs)} || {Literal, Lbl} <- Switch0],
+    Sw#b_switch{arg=aca_cs_arg(Arg0, VRs),
+                fail=maps:get(Fail0, BRs),
+                list=Switch};
+aca_cs_last(#b_br{bool=Arg0,succ=Succ0,fail=Fail0}=Br, VRs, BRs) ->
+    Br#b_br{bool=aca_cs_arg(Arg0, VRs),
+            succ=maps:get(Succ0, BRs),
+            fail=maps:get(Fail0, BRs)};
+aca_cs_last(#b_ret{arg=Arg0}=Ret, VRs, _BRs) ->
+    Ret#b_ret{arg=aca_cs_arg(Arg0, VRs)}.
+
+aca_cs_args_phi([{Arg, Lbl} | Args], VRs, BRs) ->
+    case BRs of
+        #{ Lbl := New } ->
+            [{aca_cs_arg(Arg, VRs), New} | aca_cs_args_phi(Args, VRs, BRs)];
+        #{} ->
+            aca_cs_args_phi(Args, VRs, BRs)
+    end;
+aca_cs_args_phi([], _VRs, _BRs) ->
+    [].
+
+aca_cs_args([Arg | Args], VRs) ->
+    [aca_cs_arg(Arg, VRs) | aca_cs_args(Args, VRs)];
+aca_cs_args([], _VRs) ->
+    [].
+
+aca_cs_arg(#b_remote{mod=Mod0,name=Name0}=Rem, VRs) ->
+    Mod = aca_cs_arg(Mod0, VRs),
+    Name = aca_cs_arg(Name0, VRs),
+    Rem#b_remote{mod=Mod,name=Name};
+aca_cs_arg(Arg, VRs) ->
+    case VRs of
+        #{ Arg := New } -> New;
+        #{} -> Arg
+    end.
+
+%% Allows contexts to pass through "wrapper functions" where the context is
+%% passed directly to a function that accepts match contexts (including other
+%% wrappers).
+%%
+%% This does not alter the function in any way, it only changes parameter info
+%% so that skip_outgoing_tail_extraction is aware that it's safe to pass
+%% contexts to us.
+
+allow_context_passthrough({Fs, ModInfo0}) ->
+    ModInfo =
+        acp_forward_params([{F, beam_ssa:uses(F#b_function.bs)} || F <- Fs],
+                           ModInfo0),
+    {Fs, ModInfo}.
+
+acp_forward_params(FsUses, ModInfo0) ->
+    F = fun({#b_function{args=Parameters}=Func, UseMap}, ModInfo) ->
+                ParamInfo =
+                    foldl(fun(Param, ParamInfo) ->
+                                  Uses = maps:get(Param, UseMap, []),
+                                  acp_1(Param, Uses, ModInfo, ParamInfo)
+                          end,
+                          funcinfo_get(Func, parameter_info, ModInfo),
+                          Parameters),
+                funcinfo_set(Func, parameter_info, ParamInfo, ModInfo)
+        end,
+    %% Allowing context passthrough on one function may make it possible to
+    %% enable it on another, so it needs to be repeated for maximum effect.
+    case foldl(F, ModInfo0, FsUses) of
+        ModInfo0 -> ModInfo0;
+        Changed -> acp_forward_params(FsUses, Changed)
+    end.
+
+%% We have no way to know if an argument is a context, so it's only safe to
+%% forward them if they're passed exactly once in the first block. Any other
+%% uses are unsafe, including function_clause errors.
+acp_1(Param, [{0, #b_set{op=call}=I}], ModInfo, ParamInfo) ->
+    %% We don't need to provide a context chain as our callers make sure that
+    %% multiple arguments never reference the same context.
+    case check_context_call(I, Param, [], ModInfo) of
+        {no_match_on_entry, _} -> ParamInfo;
+        Other -> maps:put(Param, Other, ParamInfo)
+    end;
+acp_1(_Param, _Uses, _ModInfo, ParamInfo) ->
+    ParamInfo.
+
+%% This is conceptually similar to combine_matches but operates across
+%% functions. Whenever a tail binary is passed to a parameter that accepts
+%% match contexts we'll pass the context instead, improving performance by
+%% avoiding the creation of a new match context in the callee.
+%%
+%% We also create an alias to delay extraction until it's needed as an actual
+%% binary, which is often rare on the happy path. The cost of being wrong is
+%% negligible (`bs_test_unit + bs_get_tail` vs `bs_get_binary`) so we're
+%% applying it unconditionally to keep things simple.
+
+-record(sote, { definitions :: beam_ssa:definition_map(),
+                mod_info :: module_info(),
+                match_aliases = #{} :: match_alias_map() }).
+
+skip_outgoing_tail_extraction({Fs0, ModInfo}) ->
+    Fs = map(fun(F) -> skip_outgoing_tail_extraction(F, ModInfo) end, Fs0),
+    {Fs, ModInfo}.
+
+skip_outgoing_tail_extraction(#b_function{bs=Blocks0}=F, ModInfo) ->
+    case funcinfo_get(F, has_bsm_ops, ModInfo) of
+        true ->
+            State0 = #sote{ definitions = beam_ssa:definitions(Blocks0),
+                            mod_info = ModInfo },
+
+            {Blocks1, State} = beam_ssa:mapfold_instrs_rpo(
+                                 fun sote_rewrite_calls/2, [0], State0, Blocks0),
+
+            {Blocks, Counter} = alias_matched_binaries(Blocks1,
+                                                       F#b_function.cnt,
+                                                       State#sote.match_aliases),
+
+            F#b_function{bs=Blocks,cnt=Counter};
+        false ->
+            F
+    end.
+
+sote_rewrite_calls(#b_set{op=call,args=Args}=Call, State) ->
+    sote_rewrite_call(Call, Args, [], State);
+sote_rewrite_calls(I, State) ->
+    {I, State}.
+
+sote_rewrite_call(Call, [], ArgsOut, State) ->
+    {Call#b_set{args=reverse(ArgsOut)}, State};
+sote_rewrite_call(Call0, [Arg | ArgsIn], ArgsOut, State0) ->
+    case is_tail_binary(Arg, State0#sote.definitions) of
+        true ->
+            CtxChain = context_chain_of(Arg, State0#sote.definitions),
+            case check_context_call(Call0, Arg, CtxChain, State0#sote.mod_info) of
+                suitable_for_reuse ->
+                    Ctx = match_context_of(Arg, State0#sote.definitions),
+
+                    MatchAliases0 = State0#sote.match_aliases,
+                    MatchAliases = maps:put(Arg, {0, Ctx}, MatchAliases0),
+                    State = State0#sote{ match_aliases = MatchAliases },
+
+                    Call = beam_ssa:add_anno(bsm_info, context_reused, Call0),
+                    sote_rewrite_call(Call, ArgsIn, [Ctx | ArgsOut], State);
+                Other ->
+                    Call = beam_ssa:add_anno(bsm_info, Other, Call0),
+                    sote_rewrite_call(Call, ArgsIn, [Arg | ArgsOut], State0)
+            end;
+        false ->
+            sote_rewrite_call(Call0, ArgsIn, [Arg | ArgsOut], State0)
+    end.
+
+%% Adds parameter_type_info annotations to help the validator determine whether
+%% our optimizations were safe.
+
+annotate_context_parameters({Fs, ModInfo}) ->
+    mapfoldl(fun annotate_context_parameters/2, ModInfo, Fs).
+
+annotate_context_parameters(F, ModInfo) ->
+    ParamInfo = funcinfo_get(F, parameter_info, ModInfo),
+    TypeAnno0 = beam_ssa:get_anno(parameter_type_info, F, #{}),
+    TypeAnno = maps:fold(fun(K, _V, Acc) when is_map_key(K, Acc) ->
+                                 %% Assertion.
+                                 error(conflicting_parameter_types);
+                            (K, suitable_for_reuse, Acc) ->
+                                 T = beam_validator:type_anno(match_context),
+                                 Acc#{ K => T };
+                            (_K, _V, Acc) ->
+                                 Acc
+                         end, TypeAnno0, ParamInfo),
+    {beam_ssa:add_anno(parameter_type_info, TypeAnno, F), ModInfo}.
+
+%%%
+%%% +bin_opt_info
+%%%
+
+collect_opt_info(Fs) ->
+    foldl(fun(#b_function{bs=Blocks}=F, Acc0) ->
+                  UseMap = beam_ssa:uses(Blocks),
+                  Where = beam_ssa:get_anno(location, F, []),
+                  beam_ssa:fold_instrs_rpo(
+                    fun(I, Acc) ->
+                            collect_opt_info_1(I, Where, UseMap, Acc)
+                    end, [0], Acc0, Blocks)
+          end, [], Fs).
+
+collect_opt_info_1(#b_set{op=Op,anno=Anno,dst=Dst}=I, Where, UseMap, Acc0) ->
+    case is_tail_binary(I) of
+        true when Op =:= bs_match ->
+            %% The uses include when the context is passed raw, so we discard
+            %% everything but the bs_extract instruction to limit warnings to
+            %% unoptimized uses.
+            Uses0 = maps:get(Dst, UseMap, []),
+            case [E || {_, #b_set{op=bs_extract}=E} <- Uses0] of
+                [Use] -> add_unopt_binary_info(Use, false, Where, UseMap, Acc0);
+                [] -> Acc0
+            end;
+        true ->
+            %% Add a warning for each use. Note that we don't do anything
+            %% special if unused as a later pass will remove this instruction
+            %% anyway.
+            Uses = maps:get(Dst, UseMap, []),
+            foldl(fun({_Lbl, Use}, Acc) ->
+                          add_unopt_binary_info(Use, false, Where, UseMap, Acc)
+                  end, Acc0, Uses);
+        false ->
+            add_opt_info(Anno, Where, Acc0)
+    end;
+collect_opt_info_1(#b_ret{anno=Anno}, Where, _UseMap, Acc) ->
+    add_opt_info(Anno, Where, Acc);
+collect_opt_info_1(_I, _Where, _Uses, Acc) ->
+    Acc.
+
+add_opt_info(Anno, Where, Acc) ->
+    case maps:find(bsm_info, Anno) of
+        {ok, Term} -> [make_warning(Term, Anno, Where) | Acc];
+        error -> Acc
+    end.
+
+%% When an alias is promoted we need to figure out where it goes to ignore
+%% warnings for compiler-generated things, and provide more useful warnings in
+%% general.
+%%
+%% We track whether the binary has been used to build another term because it
+%% can be helpful when there's no line information.
+
+add_unopt_binary_info(#b_set{op=Follow,dst=Dst}, _Nested, Where, UseMap, Acc0)
+  when Follow =:= put_tuple;
+       Follow =:= put_list;
+       Follow =:= put_map ->
+    %% Term-building instructions.
+    {_, Uses} = unzip(maps:get(Dst, UseMap, [])),
+    foldl(fun(Use, Acc) ->
+                  add_unopt_binary_info(Use, true, Where, UseMap, Acc)
+          end, Acc0, Uses);
+add_unopt_binary_info(#b_set{op=Follow,dst=Dst}, Nested, Where, UseMap, Acc0)
+  when Follow =:= bs_extract;
+       Follow =:= phi ->
+    %% Non-building instructions that need to be followed.
+    {_, Uses} = unzip(maps:get(Dst, UseMap, [])),
+    foldl(fun(Use, Acc) ->
+                  add_unopt_binary_info(Use, Nested, Where, UseMap, Acc)
+          end, Acc0, Uses);
+add_unopt_binary_info(#b_set{op=call,
+                             args=[#b_remote{mod=#b_literal{val=erlang},
+                                             name=#b_literal{val=error}} |
+                                   _Ignored]},
+                      _Nested, _Where, _UseMap, Acc) ->
+    %% There's no nice way to tell compiler-generated exceptions apart from
+    %% user ones so we ignore them all. I doubt anyone cares.
+    Acc;
+add_unopt_binary_info(#b_switch{anno=Anno}=I, Nested, Where, _UseMap, Acc) ->
+    [make_promotion_warning(I, Nested, Anno, Where) | Acc];
+add_unopt_binary_info(#b_set{anno=Anno}=I, Nested, Where, _UseMap, Acc) ->
+    [make_promotion_warning(I, Nested, Anno, Where) | Acc];
+add_unopt_binary_info(#b_ret{anno=Anno}=I, Nested, Where, _UseMap, Acc) ->
+    [make_promotion_warning(I, Nested, Anno, Where) | Acc];
+add_unopt_binary_info(#b_br{anno=Anno}=I, Nested, Where, _UseMap, Acc) ->
+    [make_promotion_warning(I, Nested, Anno, Where) | Acc].
+
+make_promotion_warning(I, Nested, Anno, Where) ->
+    make_warning({binary_created, I, Nested}, Anno, Where).
+
+make_warning(Term, Anno, Where) ->
+    {File, Line} = maps:get(location, Anno, Where),
+    {File,[{Line,?MODULE,Term}]}.
+
+format_opt_info(context_reused) ->
+    "OPTIMIZED: match context reused";
+format_opt_info({binary_created, _, _}=Promotion) ->
+    io_lib:format("BINARY CREATED: ~s", [format_opt_info_1(Promotion)]);
+format_opt_info(Other) ->
+    io_lib:format("NOT OPTIMIZED: ~s", [format_opt_info_1(Other)]).
+
+format_opt_info_1({binary_created, #b_set{op=call,args=[Call|_]}, false}) ->
+    io_lib:format("binary is used in call to ~s which doesn't support "
+                  "context reuse", [format_call(Call)]);
+format_opt_info_1({binary_created, #b_set{op=call,args=[Call|_]}, true}) ->
+    io_lib:format("binary is used in term passed to ~s",
+                  [format_call(Call)]);
+format_opt_info_1({binary_created, #b_set{op={bif, BIF},args=Args}, false}) ->
+    io_lib:format("binary is used in ~p/~p which doesn't support context "
+                  "reuse", [BIF, length(Args)]);
+format_opt_info_1({binary_created, #b_set{op={bif, BIF},args=Args}, true}) ->
+    io_lib:format("binary is used in term passed to ~p/~p",
+                  [BIF, length(Args)]);
+format_opt_info_1({binary_created, #b_set{op=Op}, false}) ->
+    io_lib:format("binary is used in '~p' which doesn't support context "
+                  "reuse", [Op]);
+format_opt_info_1({binary_created, #b_set{op=Op}, true}) ->
+    io_lib:format("binary is used in term passed to '~p'", [Op]);
+format_opt_info_1({binary_created, #b_ret{}, false}) ->
+    io_lib:format("binary is returned from the function", []);
+format_opt_info_1({binary_created, #b_ret{}, true}) ->
+    io_lib:format("binary is used in a term that is returned from the "
+                  "function", []);
+format_opt_info_1({unsuitable_call, {Call, Inner}}) ->
+    io_lib:format("binary used in call to ~s, where ~s",
+                  [format_call(Call), format_opt_info_1(Inner)]);
+format_opt_info_1({remote_call, Call}) ->
+    io_lib:format("binary is used in remote call to ~s", [format_call(Call)]);
+format_opt_info_1({fun_call, Call}) ->
+    io_lib:format("binary is used in fun call (~s)",
+                  [format_call(Call)]);
+format_opt_info_1({multiple_uses_in_call, Call}) ->
+    io_lib:format("binary is passed as multiple arguments to ~s",
+                  [format_call(Call)]);
+format_opt_info_1({no_match_on_entry, Call}) ->
+    io_lib:format("binary is used in call to ~s which does not begin with a "
+                  "suitable binary match", [format_call(Call)]);
+format_opt_info_1({used_before_match, #b_set{op=call,args=[Call|_]}}) ->
+    io_lib:format("binary is used in call to ~s before being matched",
+                  [format_call(Call)]);
+format_opt_info_1({used_before_match, #b_set{op={bif, BIF},args=Args}}) ->
+    io_lib:format("binary is used in ~p/~p before being matched",
+                  [BIF, length(Args)]);
+format_opt_info_1({used_before_match, #b_set{op=phi}}) ->
+    io_lib:format("binary is returned from an expression before being "
+                  "matched", []);
+format_opt_info_1({used_before_match, #b_set{op=Op}}) ->
+    io_lib:format("binary is used in '~p' before being matched",[Op]);
+format_opt_info_1(Term) ->
+    io_lib:format("~w", [Term]).
+
+format_call(#b_local{name=#b_literal{val=F},arity=A}) ->
+    io_lib:format("~p/~p", [F, A]);
+format_call(#b_remote{mod=#b_literal{val=M},name=#b_literal{val=F},arity=A}) ->
+    io_lib:format("~p:~p/~p", [M, F, A]);
+format_call(Fun) ->
+    io_lib:format("~p", [Fun]).
diff --git a/lib/compiler/src/beam_ssa_codegen.erl b/lib/compiler/src/beam_ssa_codegen.erl
new file mode 100644
index 0000000000..c2d5035b19
--- /dev/null
+++ b/lib/compiler/src/beam_ssa_codegen.erl
@@ -0,0 +1,2077 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2018. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+%% Purpose: Generate BEAM assembly code from the SSA format.
+
+-module(beam_ssa_codegen).
+
+-export([module/2]).
+-export([classify_heap_need/2]).    %Called from beam_ssa_pre_codegen.
+
+-export_type([ssa_register/0]).
+
+-include("beam_ssa.hrl").
+
+-import(lists, [foldl/3,keymember/3,keysort/2,last/1,map/2,mapfoldl/3,
+                reverse/1,reverse/2,sort/1,splitwith/2,takewhile/2]).
+
+-record(cg, {lcount=1 :: beam_label(),          %Label counter
+	     functable=#{} :: #{fa()=>beam_label()},
+             labels=#{} :: #{ssa_label()=>0|beam_label()},
+             used_labels=gb_sets:empty() :: gb_sets:set(ssa_label()),
+             regs=#{} :: #{beam_ssa:var_name()=>ssa_register()},
+             ultimate_fail=1 :: beam_label(),
+             catches=gb_sets:empty() :: gb_sets:set(ssa_label())
+             }).
+
+-spec module(beam_ssa:b_module(), [compile:option()]) ->
+                    {'ok',beam_asm:module_code()}.
+
+module(#b_module{name=Mod,exports=Es,attributes=Attrs,body=Fs}, _Opts) ->
+    {Asm,St} = functions(Fs, {atom,Mod}),
+    {ok,{Mod,Es,Attrs,Asm,St#cg.lcount}}.
+
+-record(need, {h=0 :: non_neg_integer(),
+               f=0 :: non_neg_integer()}).
+
+-record(cg_blk, {anno=#{} :: anno(),
+                 is=[] :: [instruction()],
+                 last :: terminator()}).
+
+-record(cg_set, {anno=#{} :: anno(),
+                 dst :: b_var(),
+                 op :: beam_ssa:op(),
+                 args :: [beam_ssa:argument() | xreg()]}).
+
+-record(cg_alloc, {anno=#{} :: anno(),
+                   stack=none :: 'none' | pos_integer(),
+                   words=#need{} :: #need{},
+                   live :: 'undefined' | pos_integer(),
+                   def_yregs=[] :: [yreg()]
+                  }).
+
+-record(cg_br, {bool :: beam_ssa:value(),
+                succ :: ssa_label(),
+                fail :: ssa_label()
+               }).
+-record(cg_ret, {arg :: cg_value(),
+                 dealloc=none :: 'none' | pos_integer()
+                }).
+-record(cg_switch, {arg :: cg_value(),
+                    fail :: ssa_label(),
+                    list :: [sw_list_item()]
+                   }).
+
+-type fa() :: {beam_asm:function_name(),arity()}.
+-type ssa_label() :: beam_ssa:label().
+-type beam_label() :: beam_asm:label().
+
+-type anno() :: beam_ssa:anno().
+
+-type b_var() :: beam_ssa:b_var().
+-type b_literal() :: beam_ssa:b_literal().
+
+-type cg_value() :: beam_ssa:value() | xreg().
+
+-type cg_set() :: #cg_set{}.
+-type cg_alloc() :: #cg_alloc{}.
+
+-type instruction() :: cg_set() | cg_alloc().
+
+-type cg_br() :: #cg_br{}.
+-type cg_ret() :: #cg_ret{}.
+-type cg_switch() :: #cg_switch{}.
+-type terminator() :: cg_br() | cg_ret() | cg_switch().
+
+-type sw_list_item() :: {b_literal(),ssa_label()}.
+
+-type reg_num() :: beam_asm:reg_num().
+-type xreg() :: {'x',reg_num()}.
+-type yreg() :: {'y',reg_num()}.
+
+-type ssa_register() :: xreg() | yreg() | {'fr',reg_num()} | {'z',reg_num()}.
+
+functions(Forms, AtomMod) ->
+    mapfoldl(fun (F, St) -> function(F, AtomMod, St) end,
+             #cg{lcount=1}, Forms).
+
+function(#b_function{anno=Anno,bs=Blocks}, AtomMod, St0) ->
+    #{func_info:={_,Name,Arity}} = Anno,
+    try
+        assert_badarg_block(Blocks),            %Assertion.
+        Regs = maps:get(registers, Anno),
+        St1 = St0#cg{labels=#{},used_labels=gb_sets:empty(),
+                     regs=Regs},
+        {Fi,St2} = new_label(St1),              %FuncInfo label
+        {Entry,St3} = local_func_label(Name, Arity, St2),
+        {Ult,St4} = new_label(St3),             %Ultimate failure
+        Labels = (St4#cg.labels)#{0=>Entry,?BADARG_BLOCK=>0},
+        St5 = St4#cg{labels=Labels,used_labels=gb_sets:singleton(Entry),
+                     ultimate_fail=Ult},
+        {Body,St} = cg_fun(Blocks, St5),
+        Asm = [{label,Fi},line(Anno),
+               {func_info,AtomMod,{atom,Name},Arity}] ++
+               add_parameter_annos(Body, Anno) ++
+               [{label,Ult},if_end],
+        Func = {function,Name,Arity,Entry,Asm},
+        {Func,St}
+    catch
+        Class:Error:Stack ->
+            io:fwrite("Function: ~w/~w\n", [Name,Arity]),
+            erlang:raise(Class, Error, Stack)
+    end.
+
+assert_badarg_block(Blocks) ->
+    %% Assertion: ?BADARG_BLOCK must be the call erlang:error(badarg).
+    case Blocks of
+        #{?BADARG_BLOCK:=Blk} ->
+            #b_blk{is=[#b_set{op=call,dst=Ret,
+                              args=[#b_remote{mod=#b_literal{val=erlang},
+                                              name=#b_literal{val=error}},
+                                    #b_literal{val=badarg}]}],
+                   last=#b_ret{arg=Ret}} = Blk,
+            ok;
+        #{} ->
+            %% ?BADARG_BLOCK has been removed because it was never used.
+            ok
+    end.
+
+add_parameter_annos([{label, _}=Entry | Body], Anno) ->
+    ParamInfo = maps:get(parameter_type_info, Anno, #{}),
+    Annos = maps:fold(
+        fun(K, V, Acc) when is_map_key(K, ParamInfo) ->
+                TypeInfo = maps:get(K, ParamInfo),
+                [{'%', {type_info, V, TypeInfo}} | Acc];
+           (_K, _V, Acc) ->
+                Acc
+        end, [], maps:get(registers, Anno)),
+    [Entry | sort(Annos)] ++ Body.
+
+cg_fun(Blocks, St0) ->
+    Linear0 = linearize(Blocks),
+    St = collect_catch_labels(Linear0, St0),
+    Linear1 = need_heap(Linear0),
+    Linear2 = prefer_xregs(Linear1, St),
+    Linear3 = liveness(Linear2, St),
+    Linear4 = defined(Linear3, St),
+    Linear = opt_allocate(Linear4, St),
+    cg_linear(Linear, St).
+
+%% collect_catch_labels(Linear, St) -> St.
+%%  Collect all catch labels (labels for blocks that begin
+%%  with 'landingpad' instructions) for later use.
+
+collect_catch_labels(Linear, St) ->
+    Labels = collect_catch_labels_1(Linear),
+    St#cg{catches=gb_sets:from_list(Labels)}.
+
+collect_catch_labels_1([{L,#cg_blk{is=[#cg_set{op=landingpad}|_]}}|Bs]) ->
+    [L|collect_catch_labels_1(Bs)];
+collect_catch_labels_1([_|Bs]) ->
+    collect_catch_labels_1(Bs);
+collect_catch_labels_1([]) -> [].
+
+%% need_heap([{BlockLabel,Block]) -> [{BlockLabel,Block}].
+%%  Insert need_heap instructions in the instruction list. Try to be smart and
+%%  collect them together as much as possible.
+
+need_heap(Bs0) ->
+    Bs1 = need_heap_allocs(Bs0, #{}),
+    {Bs,#need{h=0,f=0}} = need_heap_blks(reverse(Bs1), #need{}, []),
+    Bs.
+
+need_heap_allocs([{L,#cg_blk{is=Is0,last=Terminator}=Blk0}|Bs], Counts0) ->
+    Next = next_block(Bs),
+    Successors = successors(Terminator),
+    Counts = foldl(fun(S, Cnts) ->
+                           case Cnts of
+                               #{S:=C} -> Cnts#{S:=C+1};
+                               #{} when S =:= Next -> Cnts#{S=>1};
+                               #{} -> Cnts#{S=>42}
+                           end
+                   end, Counts0, Successors),
+    case Counts of
+        #{L:=1} ->
+            [{L,Blk0}|need_heap_allocs(Bs, Counts)];
+        #{L:=_} ->
+            %% This block has multiple predecessors. Force an allocation
+            %% in this block so that the predecessors don't need to do
+            %% an allocation on behalf of this block.
+            Is = case need_heap_never(Is0) of
+                     true -> Is0;
+                     false -> [#cg_alloc{}|Is0]
+                 end,
+            Blk = Blk0#cg_blk{is=Is},
+            [{L,Blk}|need_heap_allocs(Bs, Counts)];
+        #{} ->
+            [{L,Blk0}|need_heap_allocs(Bs, Counts)]
+    end;
+need_heap_allocs([], _) -> [].
+
+need_heap_never([#cg_alloc{}|_]) -> true;
+need_heap_never([#cg_set{op=recv_next}|_]) -> true;
+need_heap_never([#cg_set{op=wait}|_]) -> true;
+need_heap_never(_) -> false.
+
+need_heap_blks([{L,#cg_blk{is=Is0}=Blk0}|Bs], H0, Acc) ->
+    {Is1,H1} = need_heap_is(reverse(Is0), H0, []),
+    {Ns,H} = need_heap_terminator(Bs, L, H1),
+    Is = Ns ++ Is1,
+    Blk = Blk0#cg_blk{is=Is},
+    need_heap_blks(Bs, H, [{L,Blk}|Acc]);
+need_heap_blks([], H, Acc) ->
+    {Acc,H}.
+
+need_heap_is([#cg_alloc{words=Words}=Alloc0|Is], N, Acc) ->
+    Alloc = Alloc0#cg_alloc{words=add_heap_words(N, Words)},
+    need_heap_is(Is, #need{}, [Alloc|Acc]);
+need_heap_is([#cg_set{anno=Anno,op=bs_init}=I0|Is], N, Acc) ->
+    Alloc = case need_heap_need(N) of
+                [#cg_alloc{words=Need}] -> alloc(Need);
+                [] -> 0
+            end,
+    I = I0#cg_set{anno=Anno#{alloc=>Alloc}},
+    need_heap_is(Is, #need{}, [I|Acc]);
+need_heap_is([#cg_set{op=Op,args=Args}=I|Is], N, Acc) ->
+    case classify_heap_need(Op, Args) of
+        {put,Words} ->
+            %% Pass through adding to needed heap.
+            need_heap_is(Is, add_heap_words(N, Words), [I|Acc]);
+        put_float ->
+            need_heap_is(Is, add_heap_float(N), [I|Acc]);
+        neutral ->
+            need_heap_is(Is, N, [I|Acc]);
+        gc ->
+            need_heap_is(Is, #need{}, [I]++need_heap_need(N)++Acc)
+    end;
+need_heap_is([], N, Acc) ->
+    {Acc,N}.
+
+need_heap_terminator([{_,#cg_blk{last=#cg_br{succ=L,fail=L}}}|_], L, N) ->
+    %% Fallthrough.
+    {[],N};
+need_heap_terminator([{_,#cg_blk{is=Is,last=#cg_br{succ=L}}}|_], L, N) ->
+    case need_heap_need(N) of
+        [] ->
+            {[],#need{}};
+        [_|_]=Alloc ->
+            %% If the preceding instructions are a binary construction,
+            %% hoist the allocation and incorporate into the bs_init
+            %% instruction.
+            case reverse(Is) of
+                [#cg_set{op=succeeded},#cg_set{op=bs_init}|_] ->
+                    {[],N};
+                [#cg_set{op=bs_put}|_] ->
+                    {[],N};
+                _ ->
+                    %% Not binary construction. Must emit an allocation
+                    %% instruction in this block.
+                    {Alloc,#need{}}
+            end
+    end;
+need_heap_terminator([{_,#cg_blk{}}|_], _, N) ->
+    {need_heap_need(N),#need{}};
+need_heap_terminator([], _, H) ->
+    {need_heap_need(H),#need{}}.
+
+need_heap_need(#need{h=0,f=0}) -> [];
+need_heap_need(#need{}=N) -> [#cg_alloc{words=N}].
+
+add_heap_words(#need{h=H1,f=F1}, #need{h=H2,f=F2}) ->
+    #need{h=H1+H2,f=F1+F2};
+add_heap_words(#need{h=Heap}=N, Words) when is_integer(Words) ->
+    N#need{h=Heap+Words}.
+
+add_heap_float(#need{f=F}=N) ->
+    N#need{f=F+1}.
+
+%% classify_heap_need(Operation, Arguments) ->
+%%        gc | neutral | {put,Words} | put_float.
+%%  Classify the heap need for this instruction. The return
+%%  values have the following meaning.
+%%
+%%  {put,Words} means that the instruction will use Words words to build
+%%  something on the heap.
+%%
+%%  'put_float' means that the instruction will build one floating point
+%%  number on the heap.
+%%
+%%  'gc' means that that the instruction can potentially do a GC or throw an
+%%  exception. That means that an allocation instruction for any building
+%%  must be placed after this instruction.
+%%
+%%  'neutral' means that the instruction does nothing to disturb the heap.
+
+-spec classify_heap_need(beam_ssa:op(), [beam_ssa:value()]) ->
+                                'gc' | 'neutral' |
+                                {'put',non_neg_integer()} | 'put_float'.
+
+classify_heap_need(put_list, _) ->
+    {put,2};
+classify_heap_need(put_tuple_arity, [#b_literal{val=Words}]) ->
+    {put,Words+1};
+classify_heap_need(put_tuple, Elements) ->
+    {put,length(Elements)+1};
+classify_heap_need({bif,Name}, Args) ->
+    case is_gc_bif(Name, Args) of
+        false -> neutral;
+        true -> gc
+    end;
+classify_heap_need({float,Op}, _Args) ->
+    case Op of
+        get -> put_float;
+        _ -> neutral
+    end;
+classify_heap_need(Name, _Args) ->
+    classify_heap_need(Name).
+
+%% classify_heap_need(Operation) -> gc | neutral.
+%%  Return either 'gc' or 'neutral'.
+%%
+%%  'gc' means that that the instruction can potentially do a GC or throw an
+%%  exception. That means that an allocation instruction for any building
+%%  must be placed after this instruction.
+%%
+%%  'neutral' means that the instruction does nothing to disturb the heap.
+%%
+%%  Note: Only handle operations in this function that are not handled
+%%  by classify_heap_need/2.
+
+classify_heap_need(bs_add) -> gc;
+classify_heap_need(bs_get) -> gc;
+classify_heap_need(bs_get_tail) -> gc;
+classify_heap_need(bs_init) -> gc;
+classify_heap_need(bs_init_writable) -> gc;
+classify_heap_need(bs_match_string) -> gc;
+classify_heap_need(bs_put) -> neutral;
+classify_heap_need(bs_restore) -> neutral;
+classify_heap_need(bs_save) -> neutral;
+classify_heap_need(bs_get_position) -> gc;
+classify_heap_need(bs_set_position) -> neutral;
+classify_heap_need(bs_skip) -> gc;
+classify_heap_need(bs_start_match) -> neutral;
+classify_heap_need(bs_test_tail) -> neutral;
+classify_heap_need(bs_utf16_size) -> neutral;
+classify_heap_need(bs_utf8_size) -> neutral;
+classify_heap_need(build_stacktrace) -> gc;
+classify_heap_need(call) -> gc;
+classify_heap_need(catch_end) -> gc;
+classify_heap_need(copy) -> neutral;
+classify_heap_need(extract) -> gc;
+classify_heap_need(get_hd) -> neutral;
+classify_heap_need(get_map_element) -> neutral;
+classify_heap_need(get_tl) -> neutral;
+classify_heap_need(get_tuple_element) -> neutral;
+classify_heap_need(has_map_field) -> neutral;
+classify_heap_need(is_nonempty_list) -> neutral;
+classify_heap_need(is_tagged_tuple) -> neutral;
+classify_heap_need(kill_try_tag) -> gc;
+classify_heap_need(landingpad) -> gc;
+classify_heap_need(make_fun) -> gc;
+classify_heap_need(new_try_tag) -> gc;
+classify_heap_need(peek_message) -> gc;
+classify_heap_need(put_map) -> gc;
+classify_heap_need(put_tuple_elements) -> neutral;
+classify_heap_need(raw_raise) -> gc;
+classify_heap_need(recv_next) -> gc;
+classify_heap_need(remove_message) -> neutral;
+classify_heap_need(resume) -> gc;
+classify_heap_need(set_tuple_element) -> gc;
+classify_heap_need(succeeded) -> neutral;
+classify_heap_need(timeout) -> gc;
+classify_heap_need(wait) -> gc;
+classify_heap_need(wait_timeout) -> gc.
+
+%%%
+%%% Because beam_ssa_pre_codegen has inserted 'copy' instructions to copy
+%%% variables that must be saved on the stack, a value can for some time
+%%% be in both an X register and a Y register.
+%%%
+%%% Here we will keep track of variables that have the same value and
+%%% rewrite instructions to use the variable that refers to the X
+%%% register instead of the Y register. That could improve performance,
+%%% since the BEAM interpreter have more optimized instructions
+%%% operating on X registers than on Y registers.
+%%%
+%%% 'call' and 'make_fun' are handled somewhat specially. If a value
+%%% already is in the correct X register, the X register will always
+%%% be used instead of the Y register. However, if there are one or more
+%%% values in the wrong X registers, the X registers variables will be
+%%% used only if that does not cause more 'move' instructions to be
+%%% be emitted than if the Y register variables were used.
+%%%
+%%% Here are some examples. The first example shows how a 'move' from
+%%% an Y register is eliminated:
+%%%
+%%%     move x0 y1
+%%%     move y1 x0   %%Will be eliminated.
+%%%
+%%%     call f/1
+%%%
+%%% Here is an example when x0 and x1 must be swapped to load the argument
+%%% registers. Here the 'call' instruction will use the Y registers to
+%%% avoid introducing an extra 'move' insruction:
+%%%
+%%%     move x0 y0
+%%%     move x1 y1
+%%%
+%%%     move y0 x1
+%%%     move y1 x0
+%%%
+%%%     call f/2
+%%%
+%%% Using the X register to load the argument registers would need
+%%% an extra 'move' instruction like this:
+%%%
+%%%     move x0 y0
+%%%     move x1 y1
+%%%
+%%%     move x1 x2
+%%%     move x0 x1
+%%%     move x2 x0
+%%%
+%%%     call f/2
+%%%
+
+prefer_xregs(Linear, St) ->
+    prefer_xregs(Linear, St, #{0=>#{}}).
+
+prefer_xregs([{L,#cg_blk{is=Is0,last=Last0}=Blk0}|Bs], St, Map0) ->
+    Copies0 = maps:get(L, Map0),
+    {Is,Copies} = prefer_xregs_is(Is0, St, Copies0, []),
+    Last = prefer_xregs_terminator(Last0, Copies, St),
+    Blk = Blk0#cg_blk{is=Is,last=Last},
+    Successors = successors(Last),
+    Map = prefer_xregs_successors(Successors, Copies, Map0),
+    [{L,Blk}|prefer_xregs(Bs, St, Map)];
+prefer_xregs([], _St, _Map) -> [].
+
+prefer_xregs_successors([L|Ls], Copies0, Map0) ->
+    case Map0 of
+        #{L:=Copies1} ->
+            Copies = merge_copies(Copies0, Copies1),
+            Map = Map0#{L:=Copies},
+            prefer_xregs_successors(Ls, Copies0, Map);
+        #{} ->
+            Map = Map0#{L=>Copies0},
+            prefer_xregs_successors(Ls, Copies0, Map)
+    end;
+prefer_xregs_successors([], _, Map) -> Map.
+
+prefer_xregs_is([#cg_alloc{}=I|Is], St, Copies0, Acc) ->
+    Copies = case I of
+                 #cg_alloc{stack=none,words=#need{h=0,f=0}} ->
+                     Copies0;
+                 #cg_alloc{} ->
+                     #{}
+             end,
+    prefer_xregs_is(Is, St, Copies, [I|Acc]);
+prefer_xregs_is([#cg_set{op=copy,dst=Dst,args=[Src]}=I|Is], St, Copies0, Acc) ->
+    Copies1 = prefer_xregs_prune(I, Copies0, St),
+    Copies = case beam_args([Src,Dst], St) of
+                 [Same,Same] -> Copies1;
+                 [_,_] -> Copies1#{Dst=>Src}
+             end,
+    prefer_xregs_is(Is, St, Copies, [I|Acc]);
+prefer_xregs_is([#cg_set{op=call,dst=Dst}=I0|Is], St, Copies, Acc) ->
+    I = prefer_xregs_call(I0, Copies, St),
+    prefer_xregs_is(Is, St, #{Dst=>{x,0}}, [I|Acc]);
+prefer_xregs_is([#cg_set{op=make_fun,dst=Dst}=I0|Is], St, Copies, Acc) ->
+    I = prefer_xregs_call(I0, Copies, St),
+    prefer_xregs_is(Is, St, #{Dst=>{x,0}}, [I|Acc]);
+prefer_xregs_is([#cg_set{op=set_tuple_element}=I|Is], St, Copies, Acc) ->
+    %% FIXME: HiPE translates the following code segment incorrectly:
+    %%     {call_ext,3,{extfunc,erlang,setelement,3}}.
+    %%     {move,{x,0},{y,3}}.
+    %%     {set_tuple_element,{y,1},{y,3},1}.
+    %% Therefore, skip the translation of the arguments for set_tuple_element.
+    prefer_xregs_is(Is, St, Copies, [I|Acc]);
+prefer_xregs_is([#cg_set{args=Args0}=I0|Is], St, Copies0, Acc) ->
+    Args = [do_prefer_xreg(A, Copies0, St) || A <- Args0],
+    I = I0#cg_set{args=Args},
+    Copies = prefer_xregs_prune(I, Copies0, St),
+    prefer_xregs_is(Is, St, Copies, [I|Acc]);
+prefer_xregs_is([], _St, Copies, Acc) ->
+    {reverse(Acc),Copies}.
+
+prefer_xregs_terminator(#cg_br{bool=Arg0}=I, Copies, St) ->
+    Arg = do_prefer_xreg(Arg0, Copies, St),
+    I#cg_br{bool=Arg};
+prefer_xregs_terminator(#cg_ret{arg=Arg0}=I, Copies, St) ->
+    Arg = do_prefer_xreg(Arg0, Copies, St),
+    I#cg_ret{arg=Arg};
+prefer_xregs_terminator(#cg_switch{arg=Arg0}=I, Copies, St) ->
+    Arg = do_prefer_xreg(Arg0, Copies, St),
+    I#cg_switch{arg=Arg}.
+
+prefer_xregs_prune(#cg_set{anno=#{clobbers:=true}}, _, _) ->
+    #{};
+prefer_xregs_prune(#cg_set{dst=Dst}, Copies, St) ->
+    DstReg = beam_arg(Dst, St),
+    F = fun(_, Alias) ->
+                beam_arg(Alias, St) =/= DstReg
+        end,
+    maps:filter(F, Copies).
+
+%% prefer_xregs_call(Instruction, Copies, St) -> Instruction.
+%%  Given a 'call' or 'make_fun' instruction, minimize the number
+%%  of 'move' instructions to set up the argument registers.
+%%  Prefer using X registers over Y registers, unless that will
+%%  result in more 'move' instructions.
+
+prefer_xregs_call(#cg_set{args=[_]}=I, _Copies, _St) ->
+    I;
+prefer_xregs_call(#cg_set{args=[F|Args0]}=I, Copies, St) ->
+    case Args0 of
+        [A0] ->
+            %% Only one argument. Always prefer the X register
+            %% if available.
+            A = do_prefer_xreg(A0, Copies, St),
+            I#cg_set{args=[F,A]};
+        [_|_] ->
+            %% Two or more arguments. Try rewriting arguments in
+            %% two ways and see which way produces the least
+            %% number of 'move' instructions.
+            Args1 = prefer_xregs_call_1(Args0, Copies, 0, St),
+            Args2 = [do_prefer_xreg(A, Copies, St) || A <- Args0],
+            case {count_moves(Args1, St),count_moves(Args2, St)} of
+                {N1,N2} when N1 < N2 ->
+                    %% There will be fewer 'move' instructions if
+                    %% we keep using Y registers.
+                    I#cg_set{args=[F|Args1]};
+                {_,_} ->
+                    %% Always use the values in X registers.
+                    I#cg_set{args=[F|Args2]}
+            end
+    end.
+
+count_moves(Args, St) ->
+    length(setup_args(beam_args(Args, St))).
+
+prefer_xregs_call_1([#b_var{}=A|As], Copies, X, St) ->
+    case {beam_arg(A, St),Copies} of
+        {{y,_},#{A:=Other}} ->
+            case beam_arg(Other, St) of
+                {x,X} ->
+                    %% This value is already in the correct X register.
+                    %% It is always benefical to use the X register variable.
+                    [Other|prefer_xregs_call_1(As, Copies, X+1, St)];
+                _ ->
+                    %% This value is another X register. Keep using
+                    %% the Y register variable.
+                    [A|prefer_xregs_call_1(As, Copies, X+1, St)]
+            end;
+        {_,_} ->
+            %% The value is not available in an X register.
+            [A|prefer_xregs_call_1(As, Copies, X+1, St)]
+    end;
+prefer_xregs_call_1([A|As], Copies, X, St) ->
+    [A|prefer_xregs_call_1(As, Copies, X+1, St)];
+prefer_xregs_call_1([], _, _, _) -> [].
+
+do_prefer_xreg(#b_var{}=A, Copies, St) ->
+    case {beam_arg(A, St),Copies} of
+        {{y,_},#{A:=Copy}} ->
+            Copy;
+        {_,_} ->
+            A
+    end;
+do_prefer_xreg(A, _, _) -> A.
+
+merge_copies(Copies0, Copies1) when map_size(Copies0) =< map_size(Copies1) ->
+    maps:filter(fun(K, V) ->
+                        case Copies1 of
+                            #{K:=V} -> true;
+                            #{} -> false
+                        end
+                end, Copies0);
+merge_copies(Copies0, Copies1) ->
+    merge_copies(Copies1, Copies0).
+
+
+%%%
+%%% Add annotations for the number of live registers.
+%%%
+
+liveness(Linear, #cg{regs=Regs}) ->
+    liveness(reverse(Linear), #{}, Regs, []).
+
+liveness([{L,#cg_blk{is=Is0,last=Last0}=Blk0}|Bs], LiveMap0, Regs, Acc) ->
+    Successors = liveness_successors(Last0),
+    Live0 = ordsets:union([liveness_get(S, LiveMap0) || S <- Successors]),
+    Live1 = liveness_terminator(Last0, Live0),
+    {Is,Live} = liveness_is(reverse(Is0), Regs, Live1, []),
+    LiveMap = LiveMap0#{L=>Live},
+    Blk = Blk0#cg_blk{is=Is},
+    liveness(Bs, LiveMap, Regs, [{L,Blk}|Acc]);
+liveness([], _LiveMap, _Regs, Acc) -> Acc.
+
+liveness_get(S, LiveMap) ->
+    case LiveMap of
+        #{S:=Live} -> Live;
+        #{} -> []
+    end.
+
+liveness_successors(Terminator) ->
+    successors(Terminator) -- [?BADARG_BLOCK].
+
+liveness_is([#cg_alloc{}=I0|Is], Regs, Live, Acc) ->
+    I = I0#cg_alloc{live=num_live(Live, Regs)},
+    liveness_is(Is, Regs, Live, [I|Acc]);
+liveness_is([#cg_set{dst=Dst,args=Args}=I0|Is], Regs, Live0, Acc) ->
+    Live1 = liveness_clobber(I0, Live0, Regs),
+    I1 = liveness_yregs_anno(I0, Live1, Regs),
+    Live2 = liveness_args(Args, Live1),
+    Live = ordsets:del_element(Dst, Live2),
+    I = liveness_anno(I1, Live, Regs),
+    liveness_is(Is, Regs, Live, [I|Acc]);
+liveness_is([], _, Live, Acc) ->
+    {Acc,Live}.
+
+liveness_terminator(#cg_br{bool=Arg}, Live) ->
+    liveness_terminator_1(Arg, Live);
+liveness_terminator(#cg_switch{arg=Arg}, Live) ->
+    liveness_terminator_1(Arg, Live);
+liveness_terminator(#cg_ret{arg=Arg}, Live) ->
+    liveness_terminator_1(Arg, Live).
+
+liveness_terminator_1(#b_var{}=V, Live) ->
+    ordsets:add_element(V, Live);
+liveness_terminator_1(#b_literal{}, Live) ->
+    Live;
+liveness_terminator_1(Reg, Live) ->
+    _ = verify_beam_register(Reg),
+    ordsets:add_element(Reg, Live).
+
+liveness_args([#b_var{}=V|As], Live) ->
+    liveness_args(As, ordsets:add_element(V, Live));
+liveness_args([#b_remote{mod=Mod,name=Name}|As], Live) ->
+    liveness_args([Mod,Name|As], Live);
+liveness_args([A|As], Live) ->
+    case is_beam_register(A) of
+        true ->
+            liveness_args(As, ordsets:add_element(A, Live));
+        false ->
+            liveness_args(As, Live)
+    end;
+liveness_args([], Live) -> Live.
+
+liveness_anno(#cg_set{op=Op}=I, Live, Regs) ->
+    case need_live_anno(Op) of
+        true ->
+            NumLive = num_live(Live, Regs),
+            Anno = (I#cg_set.anno)#{live=>NumLive},
+            I#cg_set{anno=Anno};
+        false ->
+            I
+    end.
+
+liveness_yregs_anno(#cg_set{op=Op,dst=Dst}=I, Live0, Regs) ->
+    case need_live_anno(Op) of
+        true ->
+            Live = ordsets:del_element(Dst, Live0),
+            LiveYregs = [V || V <- Live, is_yreg(V, Regs)],
+            Anno = (I#cg_set.anno)#{live_yregs=>LiveYregs},
+            I#cg_set{anno=Anno};
+        false ->
+            I
+    end.
+
+liveness_clobber(#cg_set{anno=Anno}, Live, Regs) ->
+    case Anno of
+        #{clobbers:=true} ->
+            [R || R <- Live, is_yreg(R, Regs)];
+        _ ->
+            Live
+    end.
+
+is_yreg(R, Regs) ->
+    case Regs of
+        #{R:={y,_}} -> true;
+        #{} -> false
+    end.
+
+num_live(Live, Regs) ->
+    Rs = ordsets:from_list([get_register(V, Regs) || V <- Live]),
+    num_live_1(Rs, 0).
+
+num_live_1([{x,X}|T], X) ->
+    num_live_1(T, X+1);
+num_live_1([{x,_}|_]=T, X) ->
+    %% error({hole,{x,X},expected,Next});
+    num_live_1(T, X+1);
+num_live_1([{y,_}|_], X) ->
+    X;
+num_live_1([{z,_}|_], X) ->
+    X;
+num_live_1([{fr,_}|T], X) ->
+    num_live_1(T, X);
+num_live_1([], X) ->
+    X.
+
+get_live(#cg_set{anno=#{live:=Live}}) ->
+    Live.
+
+%% need_live_anno(Operation) -> true|false.
+%%  Return 'true' if the instruction needs a 'live' annotation with
+%%  the number live X registers, or 'false' otherwise.
+
+need_live_anno(Op) ->
+    case Op of
+        {bif,_} -> true;
+        bs_get -> true;
+        bs_init -> true;
+        bs_get_position -> true;
+        bs_get_tail -> true;
+        bs_start_match -> true;
+        bs_skip -> true;
+        call -> true;
+        put_map -> true;
+        _ -> false
+    end.
+
+%%%
+%%% Add the following annotations for Y registers:
+%%%
+%%%   def_yregs   An ordset with variables that refer to live Y registers.
+%%%               That is, Y registers that that have been killed
+%%%               are not included. This annotation is added to all
+%%%               instructions that require Y registers to be initialized.
+%%%
+%%%   kill_yregs  This annotation is added to call instructions. It is
+%%%               an ordset containing variables referring to Y registers
+%%%               that will no longer be used after the call instruction.
+%%%
+
+defined(Linear, #cg{regs=Regs}) ->
+    def(Linear, #{}, Regs).
+
+def([{L,#cg_blk{is=Is0,last=Last}=Blk0}|Bs], DefMap0, Regs) ->
+    Def0 = def_get(L, DefMap0),
+    {Is,Def} = def_is(Is0, Regs, Def0, []),
+    Successors = successors(Last),
+    DefMap = def_successors(Successors, Def, DefMap0),
+    Blk = Blk0#cg_blk{is=Is},
+    [{L,Blk}|def(Bs, DefMap, Regs)];
+def([], _, _) -> [].
+
+def_get(L, DefMap) ->
+    case DefMap of
+        #{L:=Def} -> Def;
+        #{} -> []
+    end.
+
+def_is([#cg_alloc{anno=Anno0}=I0|Is], Regs, Def, Acc) ->
+    I = I0#cg_alloc{anno=Anno0#{def_yregs=>Def}},
+    def_is(Is, Regs, Def, [I|Acc]);
+def_is([#cg_set{op=kill_try_tag,args=[#b_var{}=Tag]}=I|Is], Regs, Def0, Acc) ->
+    Def = ordsets:del_element(Tag, Def0),
+    def_is(Is, Regs, Def, [I|Acc]);
+def_is([#cg_set{op=catch_end,args=[#b_var{}=Tag|_]}=I|Is], Regs, Def0, Acc) ->
+    Def = ordsets:del_element(Tag, Def0),
+    def_is(Is, Regs, Def, [I|Acc]);
+def_is([#cg_set{anno=Anno0,op=call,dst=Dst}=I0|Is],
+       Regs, Def0, Acc) ->
+    #{live_yregs:=LiveYregVars} = Anno0,
+    LiveRegs = gb_sets:from_list([maps:get(V, Regs) || V <- LiveYregVars]),
+    Kill0 = ordsets:subtract(Def0, LiveYregVars),
+
+    %% Kill0 is the set of variables that have just died. However, the registers
+    %% used for killed variables may have been reused, so we must check that the
+    %% registers to be killed are not used by other variables.
+    Kill = [K || K <- Kill0, not gb_sets:is_element(maps:get(K, Regs), LiveRegs)],
+    Anno = Anno0#{def_yregs=>Def0,kill_yregs=>Kill},
+    I = I0#cg_set{anno=Anno},
+    Def1 = ordsets:subtract(Def0, Kill),
+    Def = def_add_yreg(Dst, Def1, Regs),
+    def_is(Is, Regs, Def, [I|Acc]);
+def_is([#cg_set{anno=Anno0,op={bif,Bif},dst=Dst,args=Args}=I0|Is],
+       Regs, Def0, Acc) ->
+    Arity = length(Args),
+    I = case is_gc_bif(Bif, Args) orelse not erl_bifs:is_safe(erlang, Bif, Arity) of
+            true ->
+                I0#cg_set{anno=Anno0#{def_yregs=>Def0}};
+            false ->
+                I0
+        end,
+    Def = def_add_yreg(Dst, Def0, Regs),
+    def_is(Is, Regs, Def, [I|Acc]);
+def_is([#cg_set{anno=Anno0,dst=Dst}=I0|Is], Regs, Def0, Acc) ->
+    I = case need_y_init(I0) of
+            true ->
+                I0#cg_set{anno=Anno0#{def_yregs=>Def0}};
+            false ->
+                I0
+        end,
+    Def = def_add_yreg(Dst, Def0, Regs),
+    def_is(Is, Regs, Def, [I|Acc]);
+def_is([], _, Def, Acc) ->
+    {reverse(Acc),Def}.
+
+def_add_yreg(Dst, Def, Regs) ->
+    case is_yreg(Dst, Regs) of
+        true -> ordsets:add_element(Dst, Def);
+        false -> Def
+    end.
+
+def_successors([S|Ss], Def0, DefMap) ->
+    case DefMap of
+        #{S:=Def1} ->
+            Def = ordsets:intersection(Def0, Def1),
+            def_successors(Ss, Def0, DefMap#{S:=Def});
+        #{} ->
+            def_successors(Ss, Def0, DefMap#{S=>Def0})
+    end;
+def_successors([], _, DefMap) -> DefMap.
+
+%% need_y_init(#cg_set{}) -> true|false.
+%%  Return true if this instructions needs initialized Y registers
+%%  (because the instruction may do a GC or cause an exception
+%%  so that the stack will be scanned), or false otherwise.
+
+need_y_init(#cg_set{anno=#{clobbers:=Clobbers}}) -> Clobbers;
+need_y_init(#cg_set{op=bs_get}) -> true;
+need_y_init(#cg_set{op=bs_get_position}) -> true;
+need_y_init(#cg_set{op=bs_get_tail}) -> true;
+need_y_init(#cg_set{op=bs_init}) -> true;
+need_y_init(#cg_set{op=bs_skip,args=[#b_literal{val=Type}|_]}) ->
+    case Type of
+        utf8 -> true;
+        utf16 -> true;
+        utf32 -> true;
+        _ -> false
+    end;
+need_y_init(#cg_set{op=bs_start_match}) -> true;
+need_y_init(#cg_set{op=put_map}) -> true;
+need_y_init(#cg_set{}) -> false.
+
+%% opt_allocate([{BlockLabel,Block}], #st{}) -> [BeamInstruction].
+%%  Update the def_yregs field of each #cg_alloc{} that allocates
+%%  a stack frame. #cg_alloc.def_yregs will list all Y registers
+%%  that will be initialized by the subsequent code (thus, the
+%%  listed Y registers don't require init/1 instructions).
+
+opt_allocate(Linear, #cg{regs=Regs}) ->
+    opt_allocate_1(Linear, Regs).
+
+opt_allocate_1([{L,#cg_blk{is=[#cg_alloc{stack=Stk}=I0|Is]}=Blk0}|Bs]=Bs0, Regs)
+  when is_integer(Stk) ->
+    %% Collect the variables that are initialized by copy
+    %% instruction in this block.
+    case ordsets:from_list(opt_allocate_defs(Is, Regs)) of
+        Yregs when length(Yregs) =:= Stk ->
+            %% Those copy instructions are sufficient to fully
+            %% initialize the stack frame.
+            I = I0#cg_alloc{def_yregs=Yregs},
+            [{L,Blk0#cg_blk{is=[I|Is]}}|opt_allocate_1(Bs, Regs)];
+        Yregs0 ->
+            %% Determine a conservative approximation of the Y
+            %% registers that are guaranteed to be initialized by all
+            %% successors of this block, and to it add the variables
+            %% initialized by copy instructions in this block.
+            Yregs1 = opt_alloc_def(Bs0, gb_sets:singleton(L), []),
+            Yregs = ordsets:union(Yregs0, Yregs1),
+            I = I0#cg_alloc{def_yregs=Yregs},
+            [{L,Blk0#cg_blk{is=[I|Is]}}|opt_allocate_1(Bs, Regs)]
+    end;
+opt_allocate_1([B|Bs], Regs) ->
+    [B|opt_allocate_1(Bs, Regs)];
+opt_allocate_1([], _) -> [].
+
+opt_allocate_defs([#cg_set{op=copy,dst=Dst}|Is], Regs) ->
+    case is_yreg(Dst, Regs) of
+        true -> [Dst|opt_allocate_defs(Is, Regs)];
+        false -> []
+    end;
+opt_allocate_defs(_, _Regs) -> [].
+
+opt_alloc_def([{L,#cg_blk{is=Is,last=Last}}|Bs], Ws0, Def0) ->
+    case gb_sets:is_member(L, Ws0) of
+        false ->
+            opt_alloc_def(Bs, Ws0, Def0);
+        true ->
+            case opt_allocate_is(Is) of
+                none ->
+                    Succ = successors(Last),
+                    Ws = gb_sets:union(Ws0, gb_sets:from_list(Succ)),
+                    opt_alloc_def(Bs, Ws, Def0);
+                Def1 when is_list(Def1) ->
+                    Def = [Def1|Def0],
+                    opt_alloc_def(Bs, Ws0, Def)
+            end
+    end;
+opt_alloc_def([], _, Def) ->
+    ordsets:intersection(Def).
+
+opt_allocate_is([#cg_set{anno=Anno}|Is]) ->
+    case Anno of
+        #{def_yregs:=Yregs} ->
+            Yregs;
+        #{} ->
+            opt_allocate_is(Is)
+    end;
+opt_allocate_is([#cg_alloc{anno=#{def_yregs:=Yregs},stack=none}|_]) ->
+    Yregs;
+opt_allocate_is([#cg_alloc{}|Is]) ->
+    opt_allocate_is(Is);
+opt_allocate_is([]) -> none.
+
+%%%
+%%% Here follows the main code generation functions.
+%%%
+
+%% cg_linear([{BlockLabel,Block}]) -> [BeamInstruction].
+%%  Generate BEAM instructions.
+
+cg_linear([{L,#cg_blk{anno=#{recv_set:=L}=Anno0}=B0}|Bs], St0) ->
+    Anno = maps:remove(recv_set, Anno0),
+    B = B0#cg_blk{anno=Anno},
+    {Is,St1} = cg_linear([{L,B}|Bs], St0),
+    {Fail,St} = use_block_label(L, St1),
+    {[{recv_set,Fail}|Is],St};
+cg_linear([{L,#cg_blk{is=Is0,last=Last}}|Bs], St0) ->
+    Next = next_block(Bs),
+    St1 = new_block_label(L, St0),
+    {Is1,St2} = cg_block(Is0, Last, Next, St1),
+    {Is2,St} = cg_linear(Bs, St2),
+    {def_block_label(L, St)++Is1++Is2,St};
+cg_linear([], St) -> {[],St}.
+
+cg_block([#cg_set{op=recv_next}], #cg_br{succ=Lr0}, _Next, St0) ->
+    {Lr,St} = use_block_label(Lr0, St0),
+    {[{loop_rec_end,Lr}],St};
+cg_block([#cg_set{op=wait}], #cg_br{succ=Lr0}, _Next, St0) ->
+    {Lr,St} = use_block_label(Lr0, St0),
+    {[{wait,Lr}],St};
+cg_block(Is0, Last, Next, St0) ->
+    case Last of
+        #cg_br{succ=Next,fail=Next} ->
+            cg_block(Is0, none, St0);
+        #cg_br{succ=Same,fail=Same} ->
+            {Fail,St1} = use_block_label(Same, St0),
+            {Is,St} = cg_block(Is0, none, St1),
+            {Is++[jump(Fail)],St};
+        #cg_br{bool=Bool,succ=Next,fail=Fail0} ->
+            {Fail,St1} = use_block_label(Fail0, St0),
+            {Is,St} = cg_block(Is0, {Bool,Fail}, St1),
+            {Is,St};
+        #cg_br{bool=Bool,succ=Succ0,fail=Fail0} ->
+            {[Succ,Fail],St1} = use_block_labels([Succ0,Fail0], St0),
+            {Is,St} = cg_block(Is0, {Bool,Fail}, St1),
+            {Is++[jump(Succ)],St};
+        #cg_ret{arg=Src0,dealloc=N} ->
+            Src = beam_arg(Src0, St0),
+            cg_block(Is0, {return,Src,N}, St0);
+        #cg_switch{} ->
+            cg_switch(Is0, Last, St0)
+    end.
+
+cg_switch(Is0, Last, St0) ->
+    #cg_switch{arg=Src0,fail=Fail0,list=List0} = Last,
+    Src = beam_arg(Src0, St0),
+    {Fail1,St1} = use_block_label(Fail0, St0),
+    Fail = ensure_label(Fail1, St1),
+    {List1,St2} =
+        flatmapfoldl(fun({V,L}, S0) ->
+                             {Lbl,S} = use_block_label(L, S0),
+                             {[beam_arg(V, S),Lbl],S}
+                     end, St1, List0),
+    {Is1,St} = cg_block(Is0, none, St2),
+    case reverse(Is1) of
+        [{bif,tuple_size,_,[Tuple],{z,_}=Src}|More] ->
+            List = map(fun({integer,Arity}) -> Arity;
+                          ({f,_}=F) -> F
+                       end, List1),
+            Is = reverse(More, [{select_tuple_arity,Tuple,Fail,{list,List}}]),
+            {Is,St};
+        _ ->
+            SelectVal = {select_val,Src,Fail,{list,List1}},
+            {Is1 ++ [SelectVal],St}
+    end.
+
+jump({f,_}=Fail) ->
+    {jump,Fail};
+jump({catch_tag,Fail}) ->
+    {jump,Fail}.
+
+bif_fail({f,_}=Fail) -> Fail;
+bif_fail({catch_tag,_}) -> {f,0}.
+
+next_block([]) -> none;
+next_block([{Next,_}|_]) -> Next.
+
+ensure_label(Fail0, #cg{ultimate_fail=Lbl}) ->
+    case bif_fail(Fail0) of
+        {f,0} -> {f,Lbl};
+        {f,_}=Fail -> Fail
+    end.
+
+cg_block([#cg_set{anno=#{recv_mark:=L}=Anno0}=I0|T], Context, St0) ->
+    Anno = maps:remove(recv_mark, Anno0),
+    I = I0#cg_set{anno=Anno},
+    {Is,St1} = cg_block([I|T], Context, St0),
+    {Fail,St} = use_block_label(L, St1),
+    {[{recv_mark,Fail}|Is],St};
+cg_block([#cg_set{op=new_try_tag,dst=Tag,args=Args}], {Tag,Fail0}, St) ->
+    {catch_tag,Fail} = Fail0,
+    [Reg,{atom,Kind}] = beam_args([Tag|Args], St),
+    {[{Kind,Reg,Fail}],St};
+cg_block([#cg_set{anno=Anno,op={bif,Name},dst=Dst0,args=Args0}=I,
+          #cg_set{op=succeeded,dst=Bool}], {Bool,Fail0}, St) ->
+    [Dst|Args] = beam_args([Dst0|Args0], St),
+    Line0 = call_line(body, {extfunc,erlang,Name,length(Args)}, Anno),
+    Fail = bif_fail(Fail0),
+    Line = case Fail of
+               {f,0} -> Line0;
+               {f,_} -> []
+           end,
+    case is_gc_bif(Name, Args) of
+        true ->
+            Live = get_live(I),
+            Kill = kill_yregs(Anno, St),
+            {Kill++Line++[{gc_bif,Name,Fail,Live,Args,Dst}],St};
+        false ->
+            {Line++[{bif,Name,Fail,Args,Dst}],St}
+    end;
+cg_block([#cg_set{op={bif,tuple_size},dst=Arity0,args=[Tuple0]},
+          #cg_set{op={bif,'=:='},dst=Bool,args=[Arity0,#b_literal{val=Ar}]}=Eq],
+         {Bool,Fail}=Context, St0) ->
+    Tuple = beam_arg(Tuple0, St0),
+    case beam_arg(Arity0, St0) of
+        {z,_} ->
+            %% The size will only be used once. Combine to a test_arity instruction.
+            Test = {test,test_arity,ensure_label(Fail, St0),[Tuple,Ar]},
+            {[Test],St0};
+        Arity ->
+            %% The size will be used more than once. Must do an explicit
+            %% BIF call followed by the '==' test.
+            TupleSize = {bif,tuple_size,{f,0},[Tuple],Arity},
+            {Is,St} = cg_block([Eq], Context, St0),
+            {[TupleSize|Is],St}
+    end;
+cg_block([#cg_set{op={bif,Name},dst=Dst0,args=Args0}]=Is0, {Dst0,Fail}, St0) ->
+    [Dst|Args] = beam_args([Dst0|Args0], St0),
+    case Dst of
+        {z,_} ->
+            %% The result of the BIF call will only be used once. Convert to
+            %% a test instruction.
+            {Test,St1} = bif_to_test(Name, Args, ensure_label(Fail, St0), St0),
+            {Test,St1};
+        _ ->
+            %% Must explicitly call the BIF since the result will be used
+            %% more than once.
+            {Is1,St1} = cg_block(Is0, none, St0),
+            {Is2,St} = cg_block([], {Dst0,Fail}, St1),
+            {Is1++Is2,St}
+    end;
+cg_block([#cg_set{anno=Anno,op={bif,Name},dst=Dst0,args=Args0}=I|T],
+         Context, St0) ->
+    [Dst|Args] = beam_args([Dst0|Args0], St0),
+    {Is0,St} = cg_block(T, Context, St0),
+    case is_gc_bif(Name, Args) of
+        true ->
+            Line = call_line(body, {extfunc,erlang,Name,length(Args)}, Anno),
+            Live = get_live(I),
+            Kill = kill_yregs(Anno, St),
+            Is = Kill++Line++[{gc_bif,Name,{f,0},Live,Args,Dst}|Is0],
+            {Is,St};
+        false ->
+            Is = [{bif,Name,{f,0},Args,Dst}|Is0],
+            {Is,St}
+    end;
+cg_block([#cg_set{op=bs_init,dst=Dst0,args=Args0,anno=Anno}=I,
+          #cg_set{op=succeeded,dst=Bool}], {Bool,Fail0}, St) ->
+    Fail = bif_fail(Fail0),
+    Line = line(Anno),
+    Alloc = map_get(alloc, Anno),
+    [#b_literal{val=Kind}|Args1] = Args0,
+    case Kind of
+        new ->
+            [Dst,Size,{integer,Unit}] = beam_args([Dst0|Args1], St),
+            Live = get_live(I),
+            {[Line|cg_bs_init(Dst, Size, Alloc, Unit, Live, Fail)],St};
+        private_append ->
+            [Dst,Src,Bits,{integer,Unit}] = beam_args([Dst0|Args1], St),
+            Flags = {field_flags,[]},
+            Is = [Line,{bs_private_append,Fail,Bits,Unit,Src,Flags,Dst}],
+            {Is,St};
+        append ->
+            [Dst,Src,Bits,{integer,Unit}] = beam_args([Dst0|Args1], St),
+            Flags = {field_flags,[]},
+            Live = get_live(I),
+            Is = [Line,{bs_append,Fail,Bits,Alloc,Live,Unit,Src,Flags,Dst}],
+            {Is,St}
+    end;
+cg_block([#cg_set{anno=Anno,op=bs_start_match,dst=Ctx0,args=[Bin0]}=I,
+          #cg_set{op=succeeded,dst=Bool}], {Bool,Fail}, St) ->
+    [Dst,Bin1] = beam_args([Ctx0,Bin0], St),
+    {Bin,Pre} = force_reg(Bin1, Dst),
+    Live = get_live(I),
+    %% num_slots is only set when using the old instructions.
+    case maps:find(num_slots, Anno) of
+        {ok, Slots} ->
+            Is = Pre ++ [{test,bs_start_match2,Fail,Live,[Bin,Slots],Dst}],
+            {Is,St};
+        error ->
+            Is = Pre ++ [{test,bs_start_match3,Fail,Live,[Bin],Dst}],
+            {Is,St}
+    end;
+cg_block([#cg_set{op=bs_get}=Set,
+          #cg_set{op=succeeded,dst=Bool}], {Bool,Fail}, St) ->
+    {cg_bs_get(Fail, Set, St),St};
+cg_block([#cg_set{op=bs_match_string,args=[CtxVar,#b_literal{val=String}]},
+          #cg_set{op=succeeded,dst=Bool}], {Bool,Fail}, St) ->
+    CtxReg = beam_arg(CtxVar, St),
+    Is = [{test,bs_match_string,Fail,[CtxReg,String]}],
+    {Is,St};
+cg_block([#cg_set{dst=Dst0,op=landingpad,args=Args0}|T], Context, St0) ->
+    [Dst,{atom,Kind},Tag] = beam_args([Dst0|Args0], St0),
+    case Kind of
+        'catch' ->
+            cg_catch(Dst, T, Context, St0);
+        'try' ->
+            cg_try(Dst, Tag, T, Context, St0)
+    end;
+cg_block([#cg_set{op=kill_try_tag,args=Args0}|Is], Context, St0) ->
+    [Reg] = beam_args(Args0, St0),
+    {Is0,St} = cg_block(Is, Context, St0),
+    {[{try_end,Reg}|Is0],St};
+cg_block([#cg_set{op=catch_end,dst=Dst0,args=Args0}|Is], Context, St0) ->
+    [Dst,Reg,{x,0}] = beam_args([Dst0|Args0], St0),
+    {Is0,St} = cg_block(Is, Context, St0),
+    {[{catch_end,Reg}|copy({x,0}, Dst)++Is0],St};
+cg_block([#cg_set{op=call}=I,
+          #cg_set{op=succeeded,dst=Bool}], {Bool,_Fail}, St) ->
+    %% A call in try/catch block.
+    cg_block([I], none, St);
+cg_block([#cg_set{op=Op,dst=Dst0,args=Args0}=I,
+          #cg_set{op=succeeded,dst=Bool}], {Bool,Fail}, St) ->
+    [Dst|Args] = beam_args([Dst0|Args0], St),
+    {cg_test(Op, bif_fail(Fail), Args, Dst, I),St};
+cg_block([#cg_set{op=bs_put,dst=Bool,args=Args0}], {Bool,Fail}, St) ->
+    Args = beam_args(Args0, St),
+    {cg_bs_put(bif_fail(Fail), Args),St};
+cg_block([#cg_set{op=bs_test_tail,dst=Bool,args=Args0}], {Bool,Fail}, St) ->
+    [Ctx,{integer,Bits}] = beam_args(Args0, St),
+    {[{test,bs_test_tail2,bif_fail(Fail),[Ctx,Bits]}],St};
+cg_block([#cg_set{op={float,checkerror},dst=Bool}], {Bool,Fail}, St) ->
+    {[{fcheckerror,bif_fail(Fail)}],St};
+cg_block([#cg_set{op=is_tagged_tuple,dst=Bool,args=Args0}], {Bool,Fail}, St) ->
+    [Src,{integer,Arity},Tag] = beam_args(Args0, St),
+    {[{test,is_tagged_tuple,ensure_label(Fail, St),[Src,Arity,Tag]}],St};
+cg_block([#cg_set{op=is_nonempty_list,dst=Bool,args=Args0}], {Bool,Fail}, St) ->
+    Args = beam_args(Args0, St),
+    {[{test,is_nonempty_list,ensure_label(Fail, St),Args}],St};
+cg_block([#cg_set{op=has_map_field,dst=Bool,args=Args0}], {Bool,Fail}, St) ->
+    [Src,Key] = beam_args(Args0, St),
+    {[{test,has_map_fields,Fail,Src,{list,[Key]}}],St};
+cg_block([#cg_set{op=call}=Call], {_Bool,_Fail}=Context, St0) ->
+    {Is0,St1} = cg_call(Call, body, none, St0),
+    {Is1,St} = cg_block([], Context, St1),
+    {Is0++Is1,St};
+cg_block([#cg_set{op=call,dst=Dst0}=Call], Context, St) ->
+    Dst = beam_arg(Dst0, St),
+    case Context of
+        {return,Dst,_} ->
+            cg_call(Call, tail, Context, St);
+        _ ->
+            cg_call(Call, body, Context, St)
+    end;
+cg_block([#cg_set{op=call}=Call|T], Context, St0) ->
+    {Is0,St1} = cg_call(Call, body, none, St0),
+    {Is1,St} = cg_block(T, Context, St1),
+    {Is0++Is1,St};
+cg_block([#cg_set{op=make_fun,dst=Dst0,args=[Local|Args0]}|T],
+         Context, St0) ->
+    #b_local{name=#b_literal{val=Func},arity=Arity} = Local,
+    [Dst|Args] = beam_args([Dst0|Args0], St0),
+    {FuncLbl,St1} = local_func_label(Func, Arity, St0),
+    Is0 = setup_args(Args) ++
+        [{make_fun2,{f,FuncLbl},0,0,length(Args)}|copy({x,0}, Dst)],
+    {Is1,St} = cg_block(T, Context, St1),
+    {Is0++Is1,St};
+cg_block([#cg_set{op=copy}|_]=T0, Context, St0) ->
+    {Is0,T} = cg_copy(T0, St0),
+    {Is1,St} = cg_block(T, Context, St0),
+    Is = Is0 ++ Is1,
+    case is_call(T) of
+        {yes,Arity} ->
+            {opt_call_moves(Is, Arity),St};
+        no ->
+            {Is,St}
+    end;
+cg_block([#cg_set{op=Op,dst=Dst0,args=Args0}=Set], none, St) ->
+    [Dst|Args] = beam_args([Dst0|Args0], St),
+    Is = cg_instr(Op, Args, Dst, Set),
+    {Is,St};
+cg_block([#cg_set{op=Op,dst=Dst0,args=Args0}=Set|T], Context, St0) ->
+    [Dst|Args] = beam_args([Dst0|Args0], St0),
+    Is0 = cg_instr(Op, Args, Dst, Set),
+    {Is1,St} = cg_block(T, Context, St0),
+    {Is0++Is1,St};
+cg_block([#cg_alloc{}=Alloc|T], Context, St0) ->
+    Is0 = cg_alloc(Alloc, St0),
+    {Is1,St} = cg_block(T, Context, St0),
+    {Is0++Is1,St};
+cg_block([], {return,Arg,none}, St) ->
+    Is = copy(Arg, {x,0}) ++ [return],
+    {Is,St};
+cg_block([], {return,Arg,N}, St) ->
+    Is = copy(Arg, {x,0}) ++ [{deallocate,N},return],
+    {Is,St};
+cg_block([], none, St) ->
+    {[],St};
+cg_block([], {Bool0,Fail}, St) ->
+    [Bool] = beam_args([Bool0], St),
+    {[{test,is_eq_exact,Fail,[Bool,{atom,true}]}],St}.
+
+cg_copy(T0, St) ->
+    {Copies,T} = splitwith(fun(#cg_set{op=copy}) -> true;
+                              (_) -> false
+                           end, T0),
+    Moves0 = cg_copy_1(Copies, St),
+    Moves1 = [Move || {move,Src,Dst}=Move <- Moves0, Src =/= Dst],
+    Scratch = {x,1022},
+    Moves = order_moves(Moves1, Scratch),
+    {Moves,T}.
+
+cg_copy_1([#cg_set{dst=Dst0,args=Args}|T], St) ->
+    [Dst,Src] = beam_args([Dst0|Args], St),
+    Copies = cg_copy_1(T, St),
+    case keymember(Dst, 3, Copies) of
+        true ->
+            %% Will be overwritten. Don't generate a move instruction.
+            Copies;
+        false ->
+            [{move,Src,Dst}|Copies]
+    end;
+cg_copy_1([], _St) -> [].
+
+-define(IS_LITERAL(Val), (Val =:= nil orelse
+                          element(1, Val) =:= integer orelse
+                          element(1, Val) =:= float orelse
+                          element(1, Val) =:= atom orelse
+                          element(1, Val) =:= literal)).
+
+bif_to_test('or', [V1,V2], {f,Lbl}=Fail, St0) when Lbl =/= 0 ->
+    {SuccLabel,St} = new_label(St0),
+    {[{test,is_eq_exact,{f,SuccLabel},[V1,{atom,false}]},
+      {test,is_eq_exact,Fail,[V2,{atom,true}]},
+      {label,SuccLabel}],St};
+bif_to_test(Op, Args, Fail, St) ->
+    {bif_to_test(Op, Args, Fail),St}.
+
+bif_to_test('and', [V1,V2], Fail) ->
+    [{test,is_eq_exact,Fail,[V1,{atom,true}]},
+     {test,is_eq_exact,Fail,[V2,{atom,true}]}];
+bif_to_test('not', [Var], Fail) ->
+    [{test,is_eq_exact,Fail,[Var,{atom,false}]}];
+bif_to_test(Name, Args, Fail) ->
+    [bif_to_test_1(Name, Args, Fail)].
+
+bif_to_test_1(is_atom,     [_]=Ops, Fail) ->
+    {test,is_atom,Fail,Ops};
+bif_to_test_1(is_boolean,  [_]=Ops, Fail) ->
+    {test,is_boolean,Fail,Ops};
+bif_to_test_1(is_binary,   [_]=Ops, Fail) ->
+    {test,is_binary,Fail,Ops};
+bif_to_test_1(is_bitstring,[_]=Ops, Fail) ->
+    {test,is_bitstr,Fail,Ops};
+bif_to_test_1(is_float,    [_]=Ops, Fail) ->
+    {test,is_float,Fail,Ops};
+bif_to_test_1(is_function, [_]=Ops, Fail) ->
+    {test,is_function,Fail,Ops};
+bif_to_test_1(is_function, [_,_]=Ops, Fail) ->
+    {test,is_function2,Fail,Ops};
+bif_to_test_1(is_integer,  [_]=Ops, Fail) ->
+    {test,is_integer,Fail,Ops};
+bif_to_test_1(is_list,     [_]=Ops, Fail) ->
+    {test,is_list,Fail,Ops};
+bif_to_test_1(is_map,      [_]=Ops, Fail) ->
+    {test,is_map,Fail,Ops};
+bif_to_test_1(is_number,   [_]=Ops, Fail) ->
+    {test,is_number,Fail,Ops};
+bif_to_test_1(is_pid,      [_]=Ops, Fail) ->
+    {test,is_pid,Fail,Ops};
+bif_to_test_1(is_port,     [_]=Ops, Fail) ->
+    {test,is_port,Fail,Ops};
+bif_to_test_1(is_reference, [_]=Ops, Fail) ->
+    {test,is_reference,Fail,Ops};
+bif_to_test_1(is_tuple,    [_]=Ops, Fail) ->
+    {test,is_tuple,Fail,Ops};
+bif_to_test_1('=<', [A,B], Fail) ->
+    {test,is_ge,Fail,[B,A]};
+bif_to_test_1('>', [A,B], Fail) ->
+    {test,is_lt,Fail,[B,A]};
+bif_to_test_1('<', [_,_]=Ops, Fail) ->
+    {test,is_lt,Fail,Ops};
+bif_to_test_1('>=', [_,_]=Ops, Fail) ->
+    {test,is_ge,Fail,Ops};
+bif_to_test_1('==', [C,A], Fail) when ?IS_LITERAL(C) ->
+    {test,is_eq,Fail,[A,C]};
+bif_to_test_1('==', [_,_]=Ops, Fail) ->
+    {test,is_eq,Fail,Ops};
+bif_to_test_1('/=', [C,A], Fail) when ?IS_LITERAL(C) ->
+    {test,is_ne,Fail,[A,C]};
+bif_to_test_1('/=', [_,_]=Ops, Fail) ->
+    {test,is_ne,Fail,Ops};
+bif_to_test_1('=:=', [C,A], Fail) when ?IS_LITERAL(C) ->
+    {test,is_eq_exact,Fail,[A,C]};
+bif_to_test_1('=:=', [_,_]=Ops, Fail) ->
+    {test,is_eq_exact,Fail,Ops};
+bif_to_test_1('=/=', [C,A], Fail) when ?IS_LITERAL(C) ->
+    {test,is_ne_exact,Fail,[A,C]};
+bif_to_test_1('=/=', [_,_]=Ops, Fail) ->
+    {test,is_ne_exact,Fail,Ops}.
+
+opt_call_moves(Is0, Arity) ->
+    {Moves0,Is} = splitwith(fun({move,_,_}) -> true;
+                               ({kill,_}) -> true;
+                               (_) -> false
+                            end, Is0),
+    Moves = opt_call_moves_1(Moves0, Arity),
+    Moves ++ Is.
+
+opt_call_moves_1([{move,Src,{x,_}=Tmp}=M1|[{kill,_}|_]=Is], Arity) ->
+    %% There could be a {move,Tmp,{x,0}} instruction after the
+    %% kill/1 instructions (moved to there by opt_move_to_x0/1).
+    case splitwith(fun({kill,_}) -> true;
+                      (_) -> false
+                   end, Is) of
+        {Kills,[{move,{x,_}=Tmp,{x,0}}=M2]} ->
+            %% The two move/2 instructions (M1 and M2) can be combined
+            %% to one. The question is, though, is it safe to place
+            %% them after the kill/1 instructions?
+            case is_killed(Src, Kills, Arity) of
+                true ->
+                    %% Src (a Y register) is killed by one of the
+                    %% kill/1 instructions. Thus M1 and M2
+                    %% must be placed before the kill/1 instructions
+                    %% (essentially undoing what opt_move_to_x0/1
+                    %% did, which turned out to be a pessimization
+                    %% in this case).
+                    opt_call_moves_1([M1,M2|Kills], Arity);
+                false ->
+                    %% Src is not killed by any of the kill/1
+                    %% instructions. Thus it is safe to place
+                    %% M1 and M2 after the kill/1 instructions.
+                    opt_call_moves_1(Kills++[M1,M2], Arity)
+            end;
+        {_,_} ->
+            [M1|Is]
+    end;
+opt_call_moves_1([{move,Src,{x,_}=Tmp}=M1,{move,Tmp,Dst}=M2|Is], Arity) ->
+    case is_killed(Tmp, Is, Arity) of
+        true ->
+            %% The X register Tmp is never used again. We can collapse
+            %% the two move instruction into one.
+            [{move,Src,Dst}|opt_call_moves_1(Is, Arity)];
+        false ->
+            [M1|opt_call_moves_1([M2|Is], Arity)]
+    end;
+opt_call_moves_1([M|Ms], Arity) ->
+    [M|opt_call_moves_1(Ms, Arity)];
+opt_call_moves_1([], _Arity) -> [].
+
+is_killed(Y, [{kill,Y}|_], _) ->
+    true;
+is_killed(R, [{kill,_}|Is], Arity) ->
+    is_killed(R, Is, Arity);
+is_killed(R, [{move,R,_}|_], _) ->
+    false;
+is_killed(R, [{move,_,R}|_], _) ->
+    true;
+is_killed(R, [{move,_,_}|Is], Arity) ->
+    is_killed(R, Is, Arity);
+is_killed({x,X}, [], Arity) ->
+    X >= Arity;
+is_killed({y,_}, [], _) ->
+    false.
+
+cg_alloc(#cg_alloc{stack=none,words=#need{h=0,f=0}}, _St) ->
+    [];
+cg_alloc(#cg_alloc{stack=none,words=Need,live=Live}, _St) ->
+    [{test_heap,alloc(Need),Live}];
+cg_alloc(#cg_alloc{stack=Stk,words=Need,live=Live,def_yregs=DefYregs},
+         #cg{regs=Regs}) when is_integer(Stk) ->
+    Alloc = alloc(Need),
+    All = [{y,Y} || Y <- lists:seq(0, Stk-1)],
+    Def = ordsets:from_list([maps:get(V, Regs) || V <- DefYregs]),
+    NeedInit = ordsets:subtract(All, Def),
+    NoZero = length(Def)*2 > Stk,
+    I = case {NoZero,Alloc} of
+            {true,0} -> {allocate,Stk,Live};
+            {true,_} -> {allocate_heap,Stk,Alloc,Live};
+            {false,0} -> {allocate_zero,Stk,Live};
+            {false,_} -> {allocate_heap_zero,Stk,Alloc,Live}
+        end,
+    [I|case NoZero of
+           true -> [{init,Y} || Y <- NeedInit];
+           false -> []
+       end].
+
+alloc(#need{h=Words,f=0}) ->
+    Words;
+alloc(#need{h=Words,f=Floats}) ->
+    {alloc,[{words,Words},{floats,Floats}]}.
+
+is_call([#cg_set{op=call,args=[#b_var{}|Args]}|_]) ->
+    {yes,1+length(Args)};
+is_call([#cg_set{op=call,args=[_|Args]}|_]) ->
+    {yes,length(Args)};
+is_call([#cg_set{op=make_fun,args=[_|Args]}|_]) ->
+    {yes,length(Args)};
+is_call(_) ->
+    no.
+
+cg_call(#cg_set{anno=Anno,op=call,dst=Dst0,args=[#b_local{}=Func0|Args0]},
+        Where, Context, St0) ->
+    [Dst|Args] = beam_args([Dst0|Args0], St0),
+    #b_local{name=Name0,arity=Arity} = Func0,
+    {atom,Name} = beam_arg(Name0, St0),
+    {FuncLbl,St} = local_func_label(Name, Arity, St0),
+    Line = call_line(Where, local, Anno),
+    Call = build_call(call, Arity, {f,FuncLbl}, Context, Dst),
+    Is = setup_args(Args, Anno, Context, St) ++ Line ++ Call,
+    case Anno of
+        #{ result_type := Info } ->
+            {Is ++ [{'%', {type_info, Dst, Info}}], St};
+        #{} ->
+            {Is, St}
+    end;
+cg_call(#cg_set{anno=Anno0,op=call,dst=Dst0,args=[#b_remote{}=Func0|Args0]},
+        Where, Context, St) ->
+    [Dst|Args] = beam_args([Dst0|Args0], St),
+    #b_remote{mod=Mod0,name=Name0,arity=Arity} = Func0,
+    case {beam_arg(Mod0, St),beam_arg(Name0, St)} of
+        {{atom,Mod},{atom,Name}} ->
+            Func = {extfunc,Mod,Name,Arity},
+            Line = call_line(Where, Func, Anno0),
+            Call = build_call(call_ext, Arity, Func, Context, Dst),
+            Anno = case erl_bifs:is_exit_bif(Mod, Name, Arity) of
+                       true ->
+                           %% There is no need to kill Y registers
+                           %% before calling an exit BIF.
+                           maps:remove(kill_yregs, Anno0);
+                       false ->
+                           Anno0
+                   end,
+            Is = setup_args(Args, Anno, Context, St) ++ Line ++ Call,
+            {Is,St};
+        {Mod,Name} ->
+            Apply = build_apply(Arity, Context, Dst),
+            Is = setup_args(Args++[Mod,Name], Anno0, Context, St) ++
+                [line(Anno0)] ++ Apply,
+            {Is,St}
+    end;
+cg_call(#cg_set{anno=Anno,op=call,dst=Dst0,args=Args0},
+        Where, Context, St) ->
+    [Dst,Func|Args] = beam_args([Dst0|Args0], St),
+    Line = call_line(Where, Func, Anno),
+    Arity = length(Args),
+    Call = build_call(call_fun, Arity, Func, Context, Dst),
+    Is = setup_args(Args++[Func], Anno, Context, St) ++ Line ++ Call,
+    {Is,St}.
+
+build_call(call_fun, Arity, _Func, none, Dst) ->
+    [{call_fun,Arity}|copy({x,0}, Dst)];
+build_call(call_fun, Arity, _Func, {return,Dst,N}, Dst) when is_integer(N) ->
+    [{call_fun,Arity},{deallocate,N},return];
+build_call(call_fun, Arity, _Func, {return,Val,N}, _Dst) when is_integer(N) ->
+    [{call_fun,Arity},{move,Val,{x,0}},{deallocate,N},return];
+build_call(call_ext, 2, {extfunc,erlang,'!',2}, none, Dst) ->
+    [send|copy({x,0}, Dst)];
+build_call(call_ext, 2, {extfunc,erlang,'!',2}, {return,Dst,N}, Dst)
+  when is_integer(N) ->
+    [send,{deallocate,N},return];
+build_call(Prefix, Arity, Func, {return,Dst,none}, Dst) ->
+    I = case Prefix of
+            call -> call_only;
+            call_ext -> call_ext_only
+        end,
+    [{I,Arity,Func}];
+build_call(call_ext, Arity, {extfunc,Mod,Name,Arity}=Func, {return,_,none}, _Dst) ->
+    true = erl_bifs:is_exit_bif(Mod, Name, Arity), %Assertion.
+    [{call_ext_only,Arity,Func}];
+build_call(Prefix, Arity, Func, {return,Dst,N}, Dst) when is_integer(N) ->
+    I = case Prefix of
+            call -> call_last;
+            call_ext -> call_ext_last
+        end,
+    [{I,Arity,Func,N}];
+build_call(I, Arity, Func, {return,Val,N}, _Dst) when is_integer(N) ->
+    [{I,Arity,Func}|copy(Val, {x,0})++[{deallocate,N},return]];
+build_call(I, Arity, Func, none, Dst) ->
+    [{I,Arity,Func}|copy({x,0}, Dst)].
+
+build_apply(Arity, {return,Dst,N}, Dst) when is_integer(N) ->
+    [{apply_last,Arity,N}];
+build_apply(Arity, {return,Val,N}, _Dst) when is_integer(N) ->
+    [{apply,Arity}|copy(Val, {x,0})++[{deallocate,N},return]];
+build_apply(Arity, none, Dst) ->
+    [{apply,Arity}|copy({x,0}, Dst)].
+
+cg_instr(put_map, [{atom,assoc},SrcMap|Ss], Dst, Set) ->
+    Live = get_live(Set),
+    [{put_map_assoc,{f,0},SrcMap,Dst,Live,{list,Ss}}];
+cg_instr(bs_get_tail, [Src], Dst, Set) ->
+    Live = get_live(Set),
+    [{bs_get_tail,Src,Dst,Live}];
+cg_instr(bs_get_position, [Ctx], Dst, Set) ->
+    Live = get_live(Set),
+    [{bs_get_position,Ctx,Dst,Live}];
+cg_instr(Op, Args, Dst, _Set) ->
+    cg_instr(Op, Args, Dst).
+
+cg_instr(bs_init_writable, Args, Dst) ->
+    setup_args(Args) ++ [bs_init_writable|copy({x,0}, Dst)];
+cg_instr(bs_restore, [Ctx,Slot], _Dst) ->
+    case Slot of
+        {integer,N} ->
+            [{bs_restore2,Ctx,N}];
+        {atom,start} ->
+            [{bs_restore2,Ctx,Slot}]
+    end;
+cg_instr(bs_save, [Ctx,Slot], _Dst) ->
+    {integer,N} = Slot,
+    [{bs_save2,Ctx,N}];
+cg_instr(bs_set_position, [Ctx,Pos], _Dst) ->
+    [{bs_set_position,Ctx,Pos}];
+cg_instr(build_stacktrace, Args, Dst) ->
+    setup_args(Args) ++ [build_stacktrace|copy({x,0}, Dst)];
+cg_instr(set_tuple_element=Op, [New,Tuple,{integer,Index}], _Dst) ->
+    [{Op,New,Tuple,Index}];
+cg_instr({float,clearerror}, [], _Dst) ->
+    [fclearerror];
+cg_instr({float,get}, [Src], Dst) ->
+    [{fmove,Src,Dst}];
+cg_instr({float,put}, [Src], Dst) ->
+    [{fmove,Src,Dst}];
+cg_instr(get_hd=Op, [Src], Dst) ->
+    [{Op,Src,Dst}];
+cg_instr(get_tl=Op, [Src], Dst) ->
+    [{Op,Src,Dst}];
+cg_instr(get_tuple_element=Op, [Src,{integer,N}], Dst) ->
+    [{Op,Src,N,Dst}];
+cg_instr(put_list=Op, [Hd,Tl], Dst) ->
+    [{Op,Hd,Tl,Dst}];
+cg_instr(put_tuple, Elements, Dst) ->
+    [{put_tuple2,Dst,{list,Elements}}];
+cg_instr(put_tuple_arity, [{integer,Arity}], Dst) ->
+    [{put_tuple,Arity,Dst}];
+cg_instr(put_tuple_elements, Elements, _Dst) ->
+    [{put,E} || E <- Elements];
+cg_instr(raw_raise, Args, Dst) ->
+    setup_args(Args) ++ [raw_raise|copy({x,0}, Dst)];
+cg_instr(remove_message, [], _Dst) ->
+    [remove_message];
+cg_instr(resume, [A,B], _Dst) ->
+    [{bif,raise,{f,0},[A,B],{x,0}}];
+cg_instr(timeout, [], _Dst) ->
+    [timeout].
+
+cg_test(bs_add=Op, Fail, [Src1,Src2,{integer,Unit}], Dst, _I) ->
+    [{Op,Fail,[Src1,Src2,Unit],Dst}];
+cg_test(bs_skip, Fail, Args, _Dst, I) ->
+    cg_bs_skip(Fail, Args, I);
+cg_test(bs_utf8_size=Op, Fail, [Src], Dst, _I) ->
+    [{Op,Fail,Src,Dst}];
+cg_test(bs_utf16_size=Op, Fail, [Src], Dst, _I) ->
+    [{Op,Fail,Src,Dst}];
+cg_test({float,convert}, Fail, [Src], Dst, _I) ->
+    {f,0} = Fail,                               %Assertion.
+    [{fconv,Src,Dst}];
+cg_test({float,Op0}, Fail, Args, Dst, #cg_set{anno=Anno}) ->
+    Op = case Op0 of
+             '+' -> fadd;
+             '-' when length(Args) =:= 2 -> fsub;
+             '-' -> fnegate;
+             '*' -> fmul;
+             '/' -> fdiv
+         end,
+    [line(Anno),{bif,Op,Fail,Args,Dst}];
+cg_test(get_map_element, Fail, [Map,Key], Dst, _I) ->
+    [{get_map_elements,Fail,Map,{list,[Key,Dst]}}];
+cg_test(peek_message, Fail, [], Dst, _I) ->
+    [{loop_rec,Fail,{x,0}}|copy({x,0}, Dst)];
+cg_test(put_map, Fail, [{atom,exact},SrcMap|Ss], Dst, Set) ->
+    Live = get_live(Set),
+    [{put_map_exact,Fail,SrcMap,Dst,Live,{list,Ss}}];
+cg_test(wait_timeout, Fail, [Timeout], _Dst, _) ->
+    case Timeout of
+        {atom,infinity} ->
+            [{wait,Fail}];
+        _ ->
+            [{wait_timeout,Fail,Timeout}]
+    end.
+
+cg_bs_get(Fail, #cg_set{dst=Dst0,args=[#b_literal{val=Type}|Ss0]}=Set, St) ->
+    Op = case Type of
+             integer -> bs_get_integer2;
+             float   -> bs_get_float2;
+             binary  -> bs_get_binary2;
+             utf8    -> bs_get_utf8;
+             utf16   -> bs_get_utf16;
+             utf32   -> bs_get_utf32
+         end,
+    [Dst|Ss1] = beam_args([Dst0|Ss0], St),
+    Ss = case Ss1 of
+             [Ctx,{literal,Flags},Size,{integer,Unit}] ->
+                 %% Plain integer/float/binary.
+                 [Ctx,Size,Unit,field_flags(Flags, Set)];
+             [Ctx,{literal,Flags}] ->
+                 %% Utf8/16/32.
+                 [Ctx,field_flags(Flags, Set)]
+         end,
+    Live = get_live(Set),
+    [{test,Op,Fail,Live,Ss,Dst}].
+
+cg_bs_skip(Fail, [{atom,Type}|Ss0], Set) ->
+    Op = case Type of
+             utf8 -> bs_skip_utf8;
+             utf16 -> bs_skip_utf16;
+             utf32 -> bs_skip_utf32;
+             _ -> bs_skip_bits2
+         end,
+    Live = get_live(Set),
+    Ss = case Ss0 of
+             [Ctx,{literal,Flags},Size,{integer,Unit}] ->
+                 %% Plain integer/float/binary.
+                 [Ctx,Size,Unit,field_flags(Flags, Set)];
+             [Ctx,{literal,Flags}] ->
+                 %% Utf8/16/32.
+                 [Ctx,Live,field_flags(Flags, Set)]
+         end,
+    case {Type,Ss} of
+        {binary,[_,{atom,all},1,_]} ->
+            [];
+        {binary,[R,{atom,all},U,_]} ->
+            [{test,bs_test_unit,Fail,[R,U]}];
+        {_,_} ->
+            [{test,Op,Fail,Ss}]
+    end.
+
+field_flags(Flags, #cg_set{anno=#{location:={File,Line}}}) ->
+    {field_flags,[{anno,[Line,{file,File}]}|Flags]};
+field_flags(Flags, _) ->
+    {field_flags,Flags}.
+
+cg_bs_put(Fail, [{atom,Type},{literal,Flags}|Args]) ->
+    Op = case Type of
+             integer -> bs_put_integer;
+             float   -> bs_put_float;
+             binary  -> bs_put_binary;
+             utf8    -> bs_put_utf8;
+             utf16   -> bs_put_utf16;
+             utf32   -> bs_put_utf32
+         end,
+    case Args of
+        [Src,Size,{integer,Unit}] ->
+            [{Op,Fail,Size,Unit,{field_flags,Flags},Src}];
+        [Src] ->
+            [{Op,Fail,{field_flags,Flags},Src}]
+    end.
+
+cg_bs_init(Dst, Size0, Alloc, Unit, Live, Fail) ->
+    Op = case Unit of
+             1 -> bs_init_bits;
+             8 -> bs_init2
+         end,
+    Size = cg_bs_init_size(Size0),
+    [{Op,Fail,Size,Alloc,Live,{field_flags,[]},Dst}].
+
+cg_bs_init_size({x,_}=R) -> R;
+cg_bs_init_size({y,_}=R) -> R;
+cg_bs_init_size({integer,Int}) -> Int.
+
+cg_catch(Agg, T0, Context, St0) ->
+    {Moves,T1} = cg_extract(T0, Agg, St0),
+    {T,St} = cg_block(T1, Context, St0),
+    {Moves++T,St}.
+
+cg_try(Agg, Tag, T0, Context, St0) ->
+    {Moves0,T1} = cg_extract(T0, Agg, St0),
+    Moves = order_moves(Moves0, {x,3}),
+    [#cg_set{op=kill_try_tag}|T2] = T1,
+    {T,St} = cg_block(T2, Context, St0),
+    {[{try_case,Tag}|Moves++T],St}.
+
+cg_extract([#cg_set{op=extract,dst=Dst0,args=Args0}|Is0], Agg, St) ->
+    [Dst,Agg,{integer,X}] = beam_args([Dst0|Args0], St),
+    {Ds,Is} = cg_extract(Is0, Agg, St),
+    case keymember(Dst, 3, Ds) of
+        true ->
+            %% This destination will be overwritten.
+            {Ds,Is};
+        false ->
+            {copy({x,X}, Dst)++Ds,Is}
+    end;
+cg_extract(Is, _, _) ->
+    {[],Is}.
+
+copy(Src, Src) -> [];
+copy(Src, Dst) -> [{move,Src,Dst}].
+
+force_reg({literal,_}=Lit, Reg) ->
+    {Reg,[{move,Lit,Reg}]};
+force_reg({integer,_}=Lit, Reg) ->
+    {Reg,[{move,Lit,Reg}]};
+force_reg({atom,_}=Lit, Reg) ->
+    {Reg,[{move,Lit,Reg}]};
+force_reg({float,_}=Lit, Reg) ->
+    {Reg,[{move,Lit,Reg}]};
+force_reg(nil=Lit, Reg) ->
+    {Reg,[{move,Lit,Reg}]};
+force_reg({Kind,_}=R, _) when Kind =:= x; Kind =:= y ->
+    {R,[]}.
+
+%% successors(Terminator) -> [Successor].
+%%  Return an ordset of all successors for the given terminator.
+
+successors(#cg_br{succ=Succ,fail=Fail}) ->
+    ordsets:from_list([Succ,Fail]);
+successors(#cg_switch{fail=Fail,list=List}) ->
+    ordsets:from_list([Fail|[Lbl || {_,Lbl} <- List]]);
+successors(#cg_ret{}) -> [].
+
+%% linearize(Blocks) -> [{BlockLabel,#cg_blk{}}].
+%%  Linearize the intermediate representation of the code. Also
+%%  translate blocks from the SSA records to internal record types
+%%  used only in this module.
+
+linearize(Blocks) ->
+    Linear = beam_ssa:linearize(Blocks),
+    linearize_1(Linear, Blocks).
+
+linearize_1([{?BADARG_BLOCK,_}|Ls], Blocks) ->
+    linearize_1(Ls, Blocks);
+linearize_1([{L,Block0}|Ls], Blocks) ->
+    Block = translate_block(L, Block0, Blocks),
+    [{L,Block}|linearize_1(Ls, Blocks)];
+linearize_1([], _Blocks) -> [].
+
+%% translate_block(BlockLabel, #b_blk{}, Blocks) -> #cg_blk{}.
+%%  Translate a block to the internal records used in this module.
+%%  Also eliminate phi nodes, replacing them with 'copy' instructions
+%%  in the predecessor blocks.
+
+translate_block(L, #b_blk{anno=Anno,is=Is0,last=Last0}, Blocks) ->
+    Last = translate_terminator(Last0),
+    PhiCopies = translate_phis(L, Last, Blocks),
+    Is1 = translate_is(Is0, PhiCopies),
+    Is = case Anno of
+             #{frame_size:=Size} ->
+                 Alloc = #cg_alloc{stack=Size},
+                 [Alloc|Is1];
+             #{} -> Is1
+         end,
+    #cg_blk{anno=Anno,is=Is,last=Last}.
+
+translate_is([#b_set{op=phi}|Is], Tail) ->
+    translate_is(Is, Tail);
+translate_is([#b_set{anno=Anno0,op=Op,dst=Dst,args=Args}=I|Is], Tail) ->
+    Anno = case beam_ssa:clobbers_xregs(I) of
+               true -> Anno0#{clobbers=>true};
+               false -> Anno0
+           end,
+    [#cg_set{anno=Anno,op=Op,dst=Dst,args=Args}|translate_is(Is, Tail)];
+translate_is([], Tail) -> Tail.
+
+translate_terminator(#b_ret{anno=Anno,arg=Arg}) ->
+    Dealloc = case Anno of
+                  #{deallocate:=N} -> N;
+                  #{} -> none
+              end,
+    #cg_ret{arg=Arg,dealloc=Dealloc};
+translate_terminator(#b_br{bool=#b_literal{val=true},succ=Succ}) ->
+    #cg_br{bool=#b_literal{val=true},succ=Succ,fail=Succ};
+translate_terminator(#b_br{bool=#b_literal{val=false},fail=Fail}) ->
+    #cg_br{bool=#b_literal{val=true},succ=Fail,fail=Fail};
+translate_terminator(#b_br{bool=Bool,succ=Succ,fail=Fail}) ->
+    #cg_br{bool=Bool,succ=Succ,fail=Fail};
+translate_terminator(#b_switch{arg=Bool,fail=Fail,list=List}) ->
+    #cg_switch{arg=Bool,fail=Fail,list=List}.
+
+translate_phis(L, #cg_br{succ=Target,fail=Target}, Blocks) ->
+    #b_blk{is=Is} = maps:get(Target, Blocks),
+    Phis = takewhile(fun(#b_set{op=phi}) -> true;
+                        (#b_set{}) -> false
+                     end, Is),
+    phi_copies(Phis, L);
+translate_phis(_, _, _) -> [].
+
+phi_copies([#b_set{dst=Dst,args=PhiArgs}|Sets], L) ->
+    CopyArgs = [V || {V,Target} <- PhiArgs, Target =:= L],
+    [#cg_set{op=copy,dst=Dst,args=CopyArgs}|phi_copies(Sets, L)];
+phi_copies([], _) -> [].
+
+%% opt_move_to_x0([Instruction]) -> [Instruction].
+%%  Simple peep-hole optimization to move a {move,Any,{x,0}} past
+%%  any kill up to the next call instruction. (To give the loader
+%%  an opportunity to combine the 'move' and the 'call' instructions.)
+
+opt_move_to_x0(Moves) ->
+    opt_move_to_x0(Moves, []).
+
+opt_move_to_x0([{move,_,{x,0}}=I|Is0], Acc0) ->
+    case move_past_kill(Is0, I, Acc0) of
+       impossible -> opt_move_to_x0(Is0, [I|Acc0]);
+       {Is,Acc} -> opt_move_to_x0(Is, Acc)
+    end;
+opt_move_to_x0([I|Is], Acc) ->
+    opt_move_to_x0(Is, [I|Acc]);
+opt_move_to_x0([], Acc) -> reverse(Acc).
+
+move_past_kill([{kill,Src}|_], {move,Src,_}, _) ->
+    impossible;
+move_past_kill([{kill,_}=I|Is], Move, Acc) ->
+    move_past_kill(Is, Move, [I|Acc]);
+move_past_kill(Is, Move, Acc) ->
+    {Is,[Move|Acc]}.
+
+%% setup_args(Args, Anno, Context) -> [Instruction].
+%% setup_args(Args) -> [Instruction].
+%%  Set up X registers for a call.
+
+setup_args(Args, Anno, none, St) ->
+    case {setup_args(Args),kill_yregs(Anno, St)} of
+        {Moves,[]} ->
+            Moves;
+        {Moves,Kills} ->
+            opt_move_to_x0(Moves ++ Kills)
+    end;
+setup_args(Args, _, _, _) ->
+    setup_args(Args).
+
+setup_args([]) ->
+    [];
+setup_args([_|_]=Args) ->
+    Moves = gen_moves(Args, 0, []),
+    Scratch = {x,1+last(sort([length(Args)-1|[X || {x,X} <- Args]]))},
+    order_moves(Moves, Scratch).
+
+%% kill_yregs(Anno, #cg{}) -> [{kill,{y,Y}}].
+%%  Kill Y registers that will not be used again.
+
+kill_yregs(#{kill_yregs:=Kill}, #cg{regs=Regs}) ->
+    ordsets:from_list([{kill,maps:get(V, Regs)} || V <- Kill]);
+kill_yregs(#{}, #cg{}) -> [].
+
+%% gen_moves(As, I, Acc)
+%%  Generate the basic move instruction to move the arguments
+%%  to their proper registers. The list will be sorted on
+%%  destinations. (I.e. the move to {x,0} will be first --
+%%  see the comment to order_moves/2.)
+
+gen_moves([A|As], I, Acc) ->
+    gen_moves(As, I+1, copy(A, {x,I}) ++ Acc);
+gen_moves([], _, Acc) ->
+    keysort(3, Acc).
+
+%% order_moves([Move], ScratchReg) -> [Move]
+%%  Orders move instruction so that source registers are not
+%%  destroyed before they are used. If there are cycles
+%%  (such as {move,{x,0},{x,1}}, {move,{x,1},{x,1}}),
+%%  the scratch register is used to break up the cycle.
+%%    If possible, the first move of the input list is placed
+%%  last in the result list (to make the move to {x,0} occur
+%%  just before the call to allow the Beam loader to coalesce
+%%  the instructions).
+
+order_moves(Ms, Scr) -> order_moves(Ms, Scr, []).
+
+order_moves([{move,_,_}=M|Ms0], ScrReg, Acc0) ->
+    {Chain,Ms} = collect_chain(Ms0, [M], ScrReg),
+    Acc = reverse(Chain, Acc0),
+    order_moves(Ms, ScrReg, Acc);
+order_moves([], _, Acc) -> Acc.
+
+collect_chain(Ms, Path, ScrReg) ->
+    collect_chain(Ms, Path, [], ScrReg).
+
+collect_chain([{move,Src,Same}=M|Ms0], [{move,Same,_}|_]=Path, Others, ScrReg) ->
+    case keymember(Src, 3, Path) of
+        false ->
+            collect_chain(reverse(Others, Ms0), [M|Path], [], ScrReg);
+        true ->
+            %% There is a cycle, which we must break up.
+            {break_up_cycle(M, Path, ScrReg),reverse(Others, Ms0)}
+    end;
+collect_chain([M|Ms], Path, Others, ScrReg) ->
+    collect_chain(Ms, Path, [M|Others], ScrReg);
+collect_chain([], Path, Others, _) ->
+    {Path,Others}.
+
+break_up_cycle({move,Src,_}=M, Path, ScrReg) ->
+    [{move,ScrReg,Src},M|break_up_cycle1(Src, Path, ScrReg)].
+
+break_up_cycle1(Dst, [{move,Src,Dst}|Path], ScrReg) ->
+    [{move,Src,ScrReg}|Path];
+break_up_cycle1(Dst, [M|Path], LastMove) ->
+    [M|break_up_cycle1(Dst, Path, LastMove)].
+
+%%%
+%%% General utility functions.
+%%%
+
+verify_beam_register({x,_}=Reg) -> Reg.
+
+is_beam_register({x,_}) -> true;
+is_beam_register(_) -> false.
+
+get_register(V, Regs) ->
+    case is_beam_register(V) of
+        true -> V;
+        false -> maps:get(V, Regs)
+    end.
+
+beam_args(As, St) ->
+    [beam_arg(A, St) || A <- As].
+
+beam_arg(#b_var{}=Name, #cg{regs=Regs}) ->
+    maps:get(Name, Regs);
+beam_arg(#b_literal{val=Val}, _) ->
+    if
+        is_atom(Val) -> {atom,Val};
+        is_float(Val) -> {float,Val};
+        is_integer(Val) -> {integer,Val};
+        Val =:= [] -> nil;
+        true -> {literal,Val}
+    end;
+beam_arg(Reg, _) ->
+    verify_beam_register(Reg).
+
+new_block_label(L, St0) ->
+    {_Lbl,St} = label_for_block(L, St0),
+    St.
+
+def_block_label(L, #cg{labels=Labels,used_labels=Used}) ->
+    Lbl = maps:get(L, Labels),
+    case gb_sets:is_member(Lbl, Used) of
+        false -> [];
+        true -> [{label,Lbl}]
+    end.
+
+use_block_labels(Ls, St) ->
+    mapfoldl(fun use_block_label/2, St, Ls).
+
+use_block_label(L, #cg{used_labels=Used,catches=Catches}=St0) ->
+    {Lbl,St} = label_for_block(L, St0),
+    case gb_sets:is_member(L, Catches) of
+        true ->
+            {{catch_tag,{f,Lbl}},
+             St#cg{used_labels=gb_sets:add(Lbl, Used)}};
+        false ->
+            {{f,Lbl},St#cg{used_labels=gb_sets:add(Lbl, Used)}}
+    end.
+
+label_for_block(L, #cg{labels=Labels0}=St0) ->
+    case Labels0 of
+        #{L:=Lbl} ->
+            {Lbl,St0};
+        #{} ->
+            {Lbl,St} = new_label(St0),
+            Labels = Labels0#{L=>Lbl},
+            {Lbl,St#cg{labels=Labels}}
+    end.
+
+%% local_func_label(Name, Arity, State) -> {Label,State'}
+%% local_func_label({Name,Arity}, State) -> {Label,State'}
+%%  Get the function entry label for a local function.
+
+local_func_label(Name, Arity, St) ->
+    local_func_label({Name,Arity}, St).
+
+local_func_label(Key, #cg{functable=Map}=St0) ->
+    case Map of
+       #{Key := Label} ->
+            {Label,St0};
+        _ ->
+            {Label,St} = new_label(St0),
+            {Label,St#cg{functable=Map#{Key => Label}}}
+    end.
+
+%% is_gc_bif(Name, Args) -> true|false.
+%%  Determines whether the BIF Name/Arity might do a GC.
+
+-spec is_gc_bif(atom(), [beam_ssa:value()]) -> boolean().
+
+is_gc_bif(hd, [_]) -> false;
+is_gc_bif(tl, [_]) -> false;
+is_gc_bif(self, []) -> false;
+is_gc_bif(node, []) -> false;
+is_gc_bif(node, [_]) -> false;
+is_gc_bif(element, [_,_]) -> false;
+is_gc_bif(get, [_]) -> false;
+is_gc_bif(is_map_key, [_,_]) -> false;
+is_gc_bif(map_get, [_,_]) -> false;
+is_gc_bif(tuple_size, [_]) -> false;
+is_gc_bif(Bif, Args) ->
+    Arity = length(Args),
+    not (erl_internal:bool_op(Bif, Arity) orelse
+	 erl_internal:new_type_test(Bif, Arity) orelse
+	 erl_internal:comp_op(Bif, Arity)).
+
+%% new_label(St) -> {L,St}.
+
+new_label(#cg{lcount=Next}=St) ->
+    {Next,St#cg{lcount=Next+1}}.
+
+%% call_line(tail|body, Func, Anno) -> [] | [{line,...}].
+%%  Produce a line instruction if it will be needed by the
+%%  call to Func.
+
+call_line(_Context, {extfunc,Mod,Name,Arity}, Anno) ->
+    case erl_bifs:is_safe(Mod, Name, Arity) of
+	false ->
+	    %% The call could be to a BIF.
+	    %% We'll need a line instruction in case the
+	    %% BIF call fails.
+	    [line(Anno)];
+	true ->
+	    %% Call to a safe BIF. Since it cannot fail,
+	    %% we don't need any line instruction here.
+	    []
+    end;
+call_line(body, _, Anno) ->
+    [line(Anno)];
+call_line(tail, local, _) ->
+    %% Tail-recursive call to a local function. A line
+    %% instruction will not be useful.
+    [];
+call_line(tail, _, Anno) ->
+    %% Call to a fun.
+    [line(Anno)].
+
+%% line(Le) -> {line,[] | {location,File,Line}}
+%%  Create a line instruction, containing information about
+%%  the current filename and line number. A line information
+%%  instruction should be placed before any operation that could
+%%  cause an exception.
+
+line(#{location:={File,Line}}) ->
+    {line,[{location,File,Line}]};
+line(#{}) ->
+    {line,[]}.
+
+flatmapfoldl(F, Accu0, [Hd|Tail]) ->
+    {R,Accu1} = F(Hd, Accu0),
+    {Rs,Accu2} = flatmapfoldl(F, Accu1, Tail),
+    {R++Rs,Accu2};
+flatmapfoldl(_, Accu, []) -> {[],Accu}.
diff --git a/lib/compiler/src/beam_ssa_dead.erl b/lib/compiler/src/beam_ssa_dead.erl
new file mode 100644
index 0000000000..bb43a550ae
--- /dev/null
+++ b/lib/compiler/src/beam_ssa_dead.erl
@@ -0,0 +1,1076 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2018. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+%% Dead code is code that is executed but has no effect. This
+%% optimization pass either removes dead code or jumps around it,
+%% potentially making it unreachable so that it can be dropped
+%% the next time beam_ssa:linearize/1 is called.
+%%
+
+-module(beam_ssa_dead).
+-export([opt/1]).
+
+-include("beam_ssa.hrl").
+-import(lists, [append/1,keymember/3,last/1,member/2,
+                takewhile/2,reverse/1]).
+
+-type used_vars() :: #{beam_ssa:label():=ordsets:ordset(beam_ssa:var_name())}.
+
+-type basic_type_test() :: atom() | {'is_tagged_tuple',pos_integer(),atom()}.
+-type type_test() :: basic_type_test() | {'not',basic_type_test()}.
+-type op_name() :: atom().
+-type basic_rel_op() :: {op_name(),beam_ssa:b_var(),beam_ssa:value()} |
+                         {basic_type_test(),beam_ssa:value()}.
+-type rel_op() :: {op_name(),beam_ssa:b_var(),beam_ssa:value()} |
+                  {type_test(),beam_ssa:value()}.
+
+-record(st,
+        {bs :: beam_ssa:block_map(),
+         us :: used_vars(),
+         skippable :: #{beam_ssa:label():='true'},
+         rel_op=none :: 'none' | rel_op(),
+         target=any :: 'any' | 'one_way' | beam_ssa:label()
+        }).
+
+-spec opt([{Label0,Block0}]) -> [{Label,Block}] when
+      Label0 :: beam_ssa:label(),
+      Block0 :: beam_ssa:b_blk(),
+      Label :: beam_ssa:label(),
+      Block :: beam_ssa:b_blk().
+
+opt(Linear) ->
+    {Used,Skippable} = used_vars(Linear),
+    Blocks0 = maps:from_list(Linear),
+    St0 = #st{bs=Blocks0,us=Used,skippable=Skippable},
+    St = shortcut_opt(St0),
+    #st{bs=Blocks} = combine_eqs(St#st{us=#{}}),
+    beam_ssa:linearize(Blocks).
+
+%%%
+%%% Shortcut br/switch targets.
+%%%
+%%% A br/switch may branch to another br/switch that in turn always
+%%% branches to another target. Rewrite br/switch to refer to the
+%%% ultimate targets directly. That will save execution time, but
+%%% could also reduce the size of the code if some of the original
+%%% targets become unreachable and be deleted.
+%%%
+%%% When rewriting branches, we must be careful not to skip instructions
+%%% that have side effects or that bind variables that will be used
+%%% at the new target.
+%%%
+%%% We must also avoid branching to phi nodes.  The reason is
+%%% twofold. First, we might create a critical edge which is strictly
+%%% forbidden. Second, there will be a branch from a block that is not
+%%% listed in the list of predecessors in the phi node.  Those
+%%% limitations could probably be overcome, but it is not clear how
+%%% much that would improve the code.
+%%%
+
+shortcut_opt(#st{bs=Blocks}=St) ->
+    %% Processing the blocks in reverse post order seems to give more
+    %% opportunities for optimizations compared to post order. (Based on
+    %% running scripts/diffable with both PO and RPO and looking at
+    %% the diff.)
+    %%
+    %% Unfortunately, processing the blocks in reverse post order
+    %% potentially makes the time complexity quadratic or even cubic if
+    %% the ordset of unset variables grows large, instead of
+    %% linear for post order processing. We try to still get reasonable
+    %% compilation times by optimizations that will keep the constant
+    %% factor as low as possible, and we try to avoid the cubic time
+    %% complexity by trying to keep the set of unset variables as small
+    %% as possible.
+
+    Ls = beam_ssa:rpo(Blocks),
+    shortcut_opt(Ls, #{}, St).
+
+shortcut_opt([L|Ls], Bs, #st{bs=Blocks0}=St) ->
+    #b_blk{is=Is,last=Last0} = Blk0 = get_block(L, St),
+    case shortcut_terminator(Last0, Is, L, Bs, St) of
+        Last0 ->
+            %% No change. No need to update the block.
+            shortcut_opt(Ls, Bs, St);
+        Last ->
+            %% The terminator was simplified in some way.
+            %% Update the block.
+            Blk = Blk0#b_blk{last=Last},
+            Blocks = Blocks0#{L=>Blk},
+            shortcut_opt(Ls, Bs, St#st{bs=Blocks})
+    end;
+shortcut_opt([], _, St) -> St.
+
+shortcut_terminator(#b_br{bool=#b_literal{val=true},succ=Succ0},
+                    _Is, From, Bs, St0) ->
+    St = St0#st{rel_op=none},
+    shortcut(Succ0, From, Bs, St);
+shortcut_terminator(#b_br{bool=#b_var{}=Bool,succ=Succ0,fail=Fail0}=Br,
+                    Is, From, Bs, St0) ->
+    St = St0#st{target=one_way},
+    RelOp = get_rel_op(Bool, Is),
+    SuccBs = bind_var(Bool, #b_literal{val=true}, Bs),
+    BrSucc = shortcut(Succ0, From, SuccBs, St#st{rel_op=RelOp}),
+    FailBs = bind_var(Bool, #b_literal{val=false}, Bs),
+    BrFail = shortcut(Fail0, From, FailBs, St#st{rel_op=invert_op(RelOp)}),
+    case {BrSucc,BrFail} of
+        {#b_br{bool=#b_literal{val=true},succ=Succ},
+         #b_br{bool=#b_literal{val=true},succ=Fail}}
+          when Succ =/= Succ0; Fail =/= Fail0 ->
+            %% One or both of the targets were cut short.
+            beam_ssa:normalize(Br#b_br{succ=Succ,fail=Fail});
+        {_,_} ->
+            %% No change.
+            Br
+    end;
+shortcut_terminator(#b_switch{arg=Bool,list=List0}=Sw, _Is, From, Bs, St) ->
+    List = shortcut_switch(List0, Bool, From, Bs, St),
+    beam_ssa:normalize(Sw#b_switch{list=List});
+shortcut_terminator(Last, _Is, _Bs, _From, _St) ->
+    Last.
+
+shortcut_switch([{Lit,L0}|T], Bool, From, Bs, St0) ->
+    RelOp = {'=:=',Bool,Lit},
+    St = St0#st{rel_op=RelOp},
+    #b_br{bool=#b_literal{val=true},succ=L} =
+        shortcut(L0, From, bind_var(Bool, Lit, Bs), St#st{target=one_way}),
+    [{Lit,L}|shortcut_switch(T, Bool, From, Bs, St0)];
+shortcut_switch([], _, _, _, _) -> [].
+
+shortcut(L, From, Bs, St) ->
+    shortcut_1(L, From, Bs, ordsets:new(), St).
+
+shortcut_1(L, From, Bs0, UnsetVars0, St) ->
+    case shortcut_2(L, From, Bs0, UnsetVars0, St) of
+        none ->
+            %% No more shortcuts found. Package up the previous
+            %% label in an unconditional branch.
+            #b_br{bool=#b_literal{val=true},succ=L,fail=L};
+        {#b_br{bool=#b_var{}}=Br,_,_} ->
+            %% This is a two-way branch. We can't do any better.
+            Br;
+        {#b_br{bool=#b_literal{val=true},succ=Succ},Bs,UnsetVars} ->
+            %% This is a safe `br`, but try to find a better one.
+            shortcut_1(Succ, L, Bs, UnsetVars, St)
+    end.
+
+%% Try to shortcut this block, branching to a successor.
+shortcut_2(L, From, Bs0, UnsetVars0, St) ->
+    #b_blk{is=Is,last=Last} = get_block(L, St),
+    case eval_is(Is, From, Bs0, St) of
+        none ->
+            %% It is not safe to avoid this block because it
+            %% has instructions with potential side effects.
+            none;
+        Bs ->
+            %% The instructions in the block (if any) don't
+            %% have any side effects and can be skipped.
+            %% Evaluate the terminator.
+            case eval_terminator(Last, Bs, St) of
+                none ->
+                    %% The terminator is not suitable (could be
+                    %% because it is a switch that can't be simplified
+                    %% or it is a ret instruction).
+                    none;
+                #b_br{}=Br ->
+                    %% We have a potentially suitable br.
+                    %% Now update the set of variables that will never
+                    %% be set if this block will be skipped.
+                    case update_unset_vars(L, Is, Br, UnsetVars0, St) of
+                        unsafe ->
+                            %% It is unsafe to use this br,
+                            %% because it refers to a variable defined
+                            %% in this block.
+                            shortcut_unsafe_br(Br, L, Bs, UnsetVars0, St);
+                        UnsetVars ->
+                            %% Continue checking whether this br is
+                            %% suitable.
+                            shortcut_test_br(Br, L, Bs, UnsetVars, St)
+                    end
+            end
+    end.
+
+shortcut_test_br(Br, From, Bs, UnsetVars, St) ->
+    case is_br_safe(UnsetVars, Br, St) of
+        false ->
+            shortcut_unsafe_br(Br, From, Bs, UnsetVars, St);
+        true ->
+            shortcut_safe_br(Br, From, Bs, UnsetVars, St)
+    end.
+
+shortcut_unsafe_br(Br, From, Bs, UnsetVars, #st{target=Target}=St) ->
+    %% Branching using this `br` is unsafe, either because it
+    %% is an unconditional branch to a phi node, or because
+    %% one or more of the variables that are not set will be
+    %% used. Try to follow branches of this `br`, to find a
+    %% safe `br`.
+    case Br of
+        #b_br{bool=#b_literal{val=true},succ=L} ->
+            case Target of
+                L ->
+                    %% We have reached the forced target, and it
+                    %% is unsafe. Give up.
+                    none;
+                _ ->
+                    %% Try following this branch to see whether it
+                    %% leads to a safe `br`.
+                    shortcut_2(L, From, Bs, UnsetVars, St)
+            end;
+        #b_br{bool=#b_var{},succ=Succ,fail=Fail} ->
+            case {Succ,Fail} of
+                {L,Target} ->
+                    %% The failure label is the forced target.
+                    %% Try following the success label to see
+                    %% whether it also ultimately ends up at the
+                    %% forced target.
+                    shortcut_2(L, From, Bs, UnsetVars, St);
+                {Target,L} ->
+                    %% The success label is the forced target.
+                    %% Try following the failure label to see
+                    %% whether it also ultimately ends up at the
+                    %% forced target.
+                    shortcut_2(L, From, Bs, UnsetVars, St);
+                {_,_} ->
+                    case Target of
+                        any ->
+                            %% This two-way branch is unsafe. Try
+                            %% reducing it to a one-way branch.
+                            shortcut_two_way(Br, From, Bs, UnsetVars, St);
+                        one_way ->
+                            %% This two-way branch is unsafe. Try
+                            %% reducing it to a one-way branch.
+                            shortcut_two_way(Br, From, Bs, UnsetVars, St);
+                        _ when is_integer(Target) ->
+                            %% This two-way branch is unsafe, and
+                            %% there already is a forced target.
+                            %% Give up.
+                            none
+                    end
+            end
+    end.
+
+shortcut_safe_br(Br, From, Bs, UnsetVars, #st{target=Target}=St) ->
+    %% This `br` instruction is safe. It does not branch to a phi
+    %% node, and all variables that will be used are guaranteed to be
+    %% defined.
+    case Br of
+        #b_br{bool=#b_literal{val=true},succ=L} ->
+            %% This is a one-way branch.
+            case Target of
+                any ->
+                    %% No forced target. Success!
+                    {Br,Bs,UnsetVars};
+                one_way ->
+                    %% The target must be a one-way branch, which this
+                    %% `br` is. Success!
+                    {Br,Bs,UnsetVars};
+                L when is_integer(Target) ->
+                    %% The forced target is L. Success!
+                    {Br,Bs,UnsetVars};
+                _ when is_integer(Target) ->
+                    %% Wrong forced target. Try following this branch
+                    %% to see if it ultimately ends up at the forced
+                    %% target.
+                    shortcut_2(L, From, Bs, UnsetVars, St)
+            end;
+        #b_br{bool=#b_var{}} ->
+            %% This is a two-way branch.
+            if
+                Target =:= any; Target =:= one_way ->
+                    %% No specific forced target. Try to reduce the
+                    %% two-way branch to an one-way branch.
+                    case shortcut_two_way(Br, From, Bs, UnsetVars, St) of
+                        none when Target =:= any ->
+                            %% This `br` can't be reduced to a one-way
+                            %% branch. Return the `br` as-is.
+                            {Br,Bs,UnsetVars};
+                        none when Target =:= one_way ->
+                            %% This `br` can't be reduced to a one-way
+                            %% branch. The caller wants a one-way
+                            %% branch.  Give up.
+                            none;
+                        {_,_,_}=Res ->
+                            %% This `br` was successfully reduced to a
+                            %% one-way branch.
+                            Res
+                    end;
+                is_integer(Target) ->
+                    %% There is a forced target, which can't
+                    %% be reached because this `br` is a two-way
+                    %% branch. Give up.
+                    none
+            end
+    end.
+
+update_unset_vars(L, Is, Br, UnsetVars, #st{skippable=Skippable}) ->
+    case is_map_key(L, Skippable) of
+        true ->
+            %% None of the variables used in this block are used in
+            %% the successors. Thus, there is no need to add the
+            %% variables to the set of unset variables.
+            case Br of
+                #b_br{bool=#b_var{}=Bool} ->
+                    case keymember(Bool, #b_set.dst, Is) of
+                        true ->
+                            %% Bool is a variable defined in this
+                            %% block. Using the br instruction from
+                            %% this block (and skipping the body of
+                            %% the block) is unsafe.
+                            unsafe;
+                        false ->
+                            %% Bool is either a variable not defined
+                            %% in this block or a literal. Adding it
+                            %% to the UnsetVars set would not change
+                            %% the outcome of the tests in
+                            %% is_br_safe/2.
+                            UnsetVars
+                    end;
+                #b_br{} ->
+                    UnsetVars
+            end;
+        false ->
+            %% Some variables defined in this block are used by
+            %% successors. We must update the set of unset variables.
+            SetInThisBlock = [V || #b_set{dst=V} <- Is],
+            ordsets:union(UnsetVars, ordsets:from_list(SetInThisBlock))
+    end.
+
+shortcut_two_way(#b_br{succ=Succ,fail=Fail}, From, Bs0, UnsetVars0, St0) ->
+    case shortcut_2(Succ, From, Bs0, UnsetVars0, St0#st{target=Fail}) of
+        {#b_br{bool=#b_literal{},succ=Fail},_,_}=Res ->
+            Res;
+        none ->
+            St = St0#st{target=Succ},
+            case shortcut_2(Fail, From, Bs0, UnsetVars0, St) of
+                {#b_br{bool=#b_literal{},succ=Succ},_,_}=Res ->
+                    Res;
+                none ->
+                    none
+            end
+    end.
+
+get_block(L, St) ->
+    #st{bs=#{L:=Blk}} = St,
+    Blk.
+
+is_br_safe(UnsetVars, Br, #st{us=Us}=St) ->
+    %% Check that none of the unset variables will be used.
+    case Br of
+        #b_br{bool=#b_var{}=V,succ=Succ,fail=Fail} ->
+            #{Succ:=Used0,Fail:=Used1} = Us,
+
+            %% A two-way branch never branches to a phi node, so there
+            %% is no need to check for phi nodes here.
+             not member(V, UnsetVars) andalso
+                ordsets:is_disjoint(Used0, UnsetVars) andalso
+                ordsets:is_disjoint(Used1, UnsetVars);
+        #b_br{succ=Same,fail=Same} ->
+            %% An unconditional branch must not jump to
+            %% a phi node.
+            not is_forbidden(Same, St) andalso
+                ordsets:is_disjoint(map_get(Same, Us), UnsetVars)
+    end.
+
+is_forbidden(L, St) ->
+    case get_block(L, St) of
+        #b_blk{is=[#b_set{op=phi}|_]} -> true;
+        #b_blk{is=[#b_set{op=peek_message}|_]} -> true;
+        #b_blk{} -> false
+    end.
+
+
+%% Evaluate the instructions in the block.
+%% Return the updated bindings, or 'none' if there is
+%% any instruction with potential side effects.
+
+eval_is([#b_set{op=phi,dst=Dst,args=Args}|Is], From, Bs0, St) ->
+    Val = get_phi_arg(Args, From),
+    Bs = bind_var(Dst, Val, Bs0),
+    eval_is(Is, From, Bs, St);
+eval_is([#b_set{op={bif,_},dst=Dst}=I0|Is], From, Bs, St) ->
+    I = sub(I0, Bs),
+    case eval_bif(I, St) of
+        #b_literal{}=Val ->
+            eval_is(Is, From, bind_var(Dst, Val, Bs), St);
+        none ->
+            eval_is(Is, From, Bs, St)
+    end;
+eval_is([#b_set{op=Op,dst=Dst}=I|Is], From, Bs, St)
+  when Op =:= is_tagged_tuple; Op =:= is_nonempty_list ->
+    #b_set{args=Args} = sub(I, Bs),
+    case eval_rel_op(Op, Args, St) of
+        #b_literal{}=Val ->
+            eval_is(Is, From, bind_var(Dst, Val, Bs), St);
+        none ->
+            eval_is(Is, From, Bs, St)
+    end;
+eval_is([#b_set{}=I|Is], From, Bs, St) ->
+    case beam_ssa:no_side_effect(I) of
+        true ->
+            %% This instruction has no side effects. It can
+            %% safely be omitted.
+            eval_is(Is, From, Bs, St);
+        false ->
+            %% This instruction may have some side effect.
+            %% It is not safe to avoid this instruction.
+            none
+    end;
+eval_is([], _From, Bs, _St) -> Bs.
+
+get_phi_arg([{Val,From}|_], From) -> Val;
+get_phi_arg([_|As], From) -> get_phi_arg(As, From).
+
+eval_terminator(#b_br{bool=#b_var{}=Bool}=Br, Bs, _St) ->
+    Val = get_value(Bool, Bs),
+    beam_ssa:normalize(Br#b_br{bool=Val});
+eval_terminator(#b_br{bool=#b_literal{}}=Br, _Bs, _St) ->
+    beam_ssa:normalize(Br);
+eval_terminator(#b_switch{arg=Arg,fail=Fail,list=List}=Sw, Bs, St) ->
+    case get_value(Arg, Bs) of
+        #b_literal{}=Val ->
+            %% Literal argument. Simplify to a `br`.
+            beam_ssa:normalize(Sw#b_switch{arg=Val});
+        #b_var{} ->
+            %% Try optimizing the switch.
+            case eval_switch(List, Arg, St, Fail) of
+                none ->
+                    none;
+                To when is_integer(To) ->
+                    %% Either one of the values in the switch
+                    %% matched a previous value in a '=:=' test, or
+                    %% none of the values matched a previous test.
+                    #b_br{bool=#b_literal{val=true},succ=To,fail=To}
+            end
+    end;
+eval_terminator(#b_ret{}, _Bs, _St) ->
+    none.
+
+eval_switch(List, Arg, #st{rel_op={_,Arg,_}=PrevOp}, Fail) ->
+    %% There is a previous relational operator testing the same variable.
+    %% Optimization may be possible.
+    eval_switch_1(List, Arg, PrevOp, Fail);
+eval_switch(_, _, _, _) ->
+    %% There is either no previous relational operator, or it tests
+    %% a different variable. Nothing to optimize.
+    none.
+
+eval_switch_1([{Lit,Lbl}|T], Arg, PrevOp, Fail) ->
+    RelOp = {'=:=',Arg,Lit},
+    case will_succeed(PrevOp, RelOp) of
+        yes ->
+            %% Success. This branch will always be taken.
+            Lbl;
+        no ->
+            %% This branch will never be taken.
+            eval_switch_1(T, Arg, PrevOp, Fail);
+        maybe ->
+            %% This label could be reached.
+            eval_switch_1(T, Arg, PrevOp, none)
+    end;
+eval_switch_1([], _Arg, _PrevOp, Fail) ->
+    %% Fail is now either the failure label or 'none'.
+    Fail.
+
+bind_var(Var, Val0, Bs) ->
+    Val = get_value(Val0, Bs),
+    Bs#{Var=>Val}.
+
+get_value(#b_var{}=Var, Bs) ->
+    case Bs of
+        #{Var:=Val} -> get_value(Val, Bs);
+        #{} -> Var
+    end;
+get_value(#b_literal{}=Lit, _Bs) -> Lit.
+
+eval_bif(#b_set{op={bif,Bif},args=Args}, St) ->
+    Arity = length(Args),
+    case erl_bifs:is_pure(erlang, Bif, Arity) of
+        false ->
+            none;
+        true ->
+            case get_lit_args(Args) of
+                none ->
+                    %% Not literal arguments. Try to evaluate
+                    %% it based on a previous relational operator.
+                    eval_rel_op({bif,Bif}, Args, St);
+                LitArgs ->
+                    try apply(erlang, Bif, LitArgs) of
+                        Val -> #b_literal{val=Val}
+                    catch
+                        error:_ -> none
+                    end
+            end
+    end.
+
+get_lit_args([#b_literal{val=Lit1}]) ->
+    [Lit1];
+get_lit_args([#b_literal{val=Lit1},
+              #b_literal{val=Lit2}]) ->
+    [Lit1,Lit2];
+get_lit_args([#b_literal{val=Lit1},
+              #b_literal{val=Lit2},
+              #b_literal{val=Lit3}]) ->
+    [Lit1,Lit2,Lit3];
+get_lit_args(_) -> none.
+
+%%%
+%%% Handling of relational operators.
+%%%
+
+get_rel_op(Bool, [_|_]=Is) ->
+    case last(Is) of
+        #b_set{op=Op,dst=Bool,args=Args} ->
+            normalize_op(Op, Args);
+        #b_set{} ->
+            none
+    end;
+get_rel_op(_, []) -> none.
+
+%% normalize_op(Instruction) -> {Normalized,FailLabel} | error
+%%    Normalized = {Operator,Variable,Variable|Literal} |
+%%                 {TypeTest,Variable}
+%%    Operation = '<' | '=<' | '=:=' | '=/=' | '>=' | '>'
+%%    TypeTest = is_atom | is_integer ...
+%%    Variable = #b_var{}
+%%    Literal = #b_literal{}
+%%
+%%  Normalize a relational operator to facilitate further
+%%  comparisons between operators. Always make the register
+%%  operand the first operand. If there are two registers,
+%%  order the registers in lexical order.
+%%
+%%  For example, this instruction:
+%%
+%%    #b_set{op={bif,=<},args=[#b_literal{}, #b_var{}}
+%%
+%%  will be normalized to:
+%%
+%%    {'=<',#b_var{},#b_literal{}}
+
+-spec normalize_op(Op, Args) -> NormalizedOp | 'none' when
+      Op :: beam_ssa:op(),
+      Args :: [beam_ssa:value()],
+      NormalizedOp :: basic_rel_op().
+
+normalize_op(is_tagged_tuple, [Arg,#b_literal{val=Size},#b_literal{val=Tag}])
+  when is_integer(Size), is_atom(Tag) ->
+    {{is_tagged_tuple,Size,Tag},Arg};
+normalize_op(is_nonempty_list, [Arg]) ->
+    {is_nonempty_list,Arg};
+normalize_op({bif,Bif}, [Arg]) ->
+    case erl_internal:new_type_test(Bif, 1) of
+        true -> {Bif,Arg};
+        false -> none
+    end;
+normalize_op({bif,Bif}, [_,_]=Args) ->
+    case erl_internal:comp_op(Bif, 2) of
+        true ->
+            normalize_op_1(Bif, Args);
+        false ->
+            none
+    end;
+normalize_op(_, _) -> none.
+
+normalize_op_1(Bif, Args) ->
+    case Args of
+        [#b_literal{}=Arg1,#b_var{}=Arg2] ->
+            {turn_op(Bif),Arg2,Arg1};
+        [#b_var{}=Arg1,#b_literal{}=Arg2] ->
+            {Bif,Arg1,Arg2};
+        [#b_var{}=A,#b_var{}=B] ->
+            if A < B -> {Bif,A,B};
+               true -> {turn_op(Bif),B,A}
+            end;
+        [#b_literal{},#b_literal{}] ->
+            none
+    end.
+
+-spec invert_op(basic_rel_op() | 'none') -> rel_op() | 'none'.
+
+invert_op({Op,Arg1,Arg2}) ->
+    {invert_op_1(Op),Arg1,Arg2};
+invert_op({TypeTest,Arg}) ->
+    {{'not',TypeTest},Arg};
+invert_op(none) -> none.
+
+invert_op_1('>=') -> '<';
+invert_op_1('<') -> '>=';
+invert_op_1('=<') -> '>';
+invert_op_1('>') -> '=<';
+invert_op_1('=:=') -> '=/=';
+invert_op_1('=/=') -> '=:=';
+invert_op_1('==') -> '/=';
+invert_op_1('/=') -> '=='.
+
+turn_op('<') -> '>';
+turn_op('=<') -> '>=';
+turn_op('>') -> '<';
+turn_op('>=') -> '=<';
+turn_op('=:='=Op) -> Op;
+turn_op('=/='=Op) -> Op;
+turn_op('=='=Op) -> Op;
+turn_op('/='=Op) -> Op.
+
+eval_rel_op(_Bif, _Args, #st{rel_op=none}) ->
+    none;
+eval_rel_op(Bif, Args, #st{rel_op=Prev}) ->
+    case normalize_op(Bif, Args) of
+        none ->
+            none;
+        RelOp ->
+            case will_succeed(Prev, RelOp) of
+                yes -> #b_literal{val=true};
+                no -> #b_literal{val=false};
+                maybe -> none
+            end
+    end.
+
+%% will_succeed(PrevCondition, Condition) -> yes | no | maybe
+%%  PrevCondition is a condition known to be true. This function
+%%  will tell whether Condition will succeed.
+
+will_succeed({_Op,_Var,_Value}=Same, {_Op,_Var,_Value}=Same) ->
+    %% Repeated test.
+    yes;
+will_succeed({Op1,Var,#b_literal{val=A}}, {Op2,Var,#b_literal{val=B}}) ->
+    will_succeed_1(Op1, A, Op2, B);
+will_succeed({Op1,Var,#b_var{}=A}, {Op2,Var,#b_var{}=B}) ->
+    will_succeed_vars(Op1, A, Op2, B);
+will_succeed({'=:=',Var,#b_literal{val=A}}, {TypeTest,Var}) ->
+    eval_type_test(TypeTest, A);
+will_succeed({_,_}=Same, {_,_}=Same) ->
+    %% Repeated type test.
+    yes;
+will_succeed({Test1,Var}, {Test2,Var}) ->
+    will_succeed_test(Test1, Test2);
+will_succeed({_,_}, {_,_}) ->
+    maybe;
+will_succeed({_,_}, {_,_,_}) ->
+    maybe;
+will_succeed({_,_,_}, {_,_}) ->
+    maybe;
+will_succeed({_,_,_}, {_,_,_}) ->
+    maybe.
+
+will_succeed_test({'not',Test1}, Test2) ->
+    case Test1 =:= Test2 of
+        true -> no;
+        false -> maybe
+    end;
+will_succeed_test(is_tuple, {is_tagged_tuple,_,_}) ->
+    maybe;
+will_succeed_test({is_tagged_tuple,_,_}, is_tuple) ->
+    yes;
+will_succeed_test(is_list, is_nonempty_list) ->
+    maybe;
+will_succeed_test(is_nonempty_list, is_list) ->
+    yes;
+will_succeed_test(T1, T2) ->
+    case is_numeric_test(T1) andalso is_numeric_test(T2) of
+        true -> maybe;
+        false -> no
+    end.
+
+will_succeed_1('=:=', A, '<', B) ->
+    if
+	B =< A -> no;
+	true -> yes
+    end;
+will_succeed_1('=:=', A, '=<', B) ->
+    if
+	B < A -> no;
+	true -> yes
+    end;
+will_succeed_1('=:=', A, '=:=', B) when A =/= B ->
+    no;
+will_succeed_1('=:=', A, '=/=', B) ->
+    if
+	A =:= B -> no;
+	true -> yes
+    end;
+will_succeed_1('=:=', A, '>=', B) ->
+    if
+	B > A -> no;
+	true -> yes
+    end;
+will_succeed_1('=:=', A, '>', B) ->
+    if
+	B >= A -> no;
+	true -> yes
+    end;
+
+will_succeed_1('=/=', A, '=:=', B) when A =:= B -> no;
+
+will_succeed_1('<', A, '=:=', B)  when B >= A -> no;
+will_succeed_1('<', A, '=/=', B)  when B >= A -> yes;
+will_succeed_1('<', A, '<',   B)  when B >= A -> yes;
+will_succeed_1('<', A, '=<',  B)  when B > A  -> yes;
+will_succeed_1('<', A, '>=',  B)  when B > A  -> no;
+will_succeed_1('<', A, '>',   B)  when B >= A -> no;
+
+will_succeed_1('=<', A, '=:=', B) when B > A  -> no;
+will_succeed_1('=<', A, '=/=', B) when B > A  -> yes;
+will_succeed_1('=<', A, '<',   B) when B > A  -> yes;
+will_succeed_1('=<', A, '=<',  B) when B >= A -> yes;
+will_succeed_1('=<', A, '>=',  B) when B > A  -> no;
+will_succeed_1('=<', A, '>',   B) when B >= A -> no;
+
+will_succeed_1('>=', A, '=:=', B) when B < A  -> no;
+will_succeed_1('>=', A, '=/=', B) when B < A  -> yes;
+will_succeed_1('>=', A, '<',   B) when B =< A -> no;
+will_succeed_1('>=', A, '=<',  B) when B < A  -> no;
+will_succeed_1('>=', A, '>=',  B) when B =< A -> yes;
+will_succeed_1('>=', A, '>',   B) when B < A  -> yes;
+
+will_succeed_1('>', A, '=:=', B)  when B =< A -> no;
+will_succeed_1('>', A, '=/=', B)  when B =< A -> yes;
+will_succeed_1('>', A, '<',   B)  when B =< A -> no;
+will_succeed_1('>', A, '=<',  B)  when B < A  -> no;
+will_succeed_1('>', A, '>=',  B)  when B =< A -> yes;
+will_succeed_1('>', A, '>',   B)  when B < A  -> yes;
+
+will_succeed_1('==', A, '==', B) ->
+    if
+	A == B -> yes;
+	true -> no
+    end;
+will_succeed_1('==', A, '/=', B) ->
+    if
+	A == B -> no;
+	true -> yes
+    end;
+will_succeed_1('/=', A, '/=', B) when A == B -> yes;
+will_succeed_1('/=', A, '==', B) when A == B -> no;
+
+will_succeed_1(_, _, _, _) -> maybe.
+
+will_succeed_vars('=/=', Val, '=:=', Val) -> no;
+will_succeed_vars('=:=', Val, '=/=', Val) -> no;
+will_succeed_vars('=:=', Val, '>=',  Val) -> yes;
+will_succeed_vars('=:=', Val, '=<',  Val) -> yes;
+
+will_succeed_vars('/=', Val1, '==', Val2) when Val1 == Val2 -> no;
+will_succeed_vars('==', Val1, '/=', Val2) when Val1 == Val2 -> no;
+
+will_succeed_vars(_, _, _, _) -> maybe.
+
+is_numeric_test(is_float) -> true;
+is_numeric_test(is_integer) -> true;
+is_numeric_test(is_number) -> true;
+is_numeric_test(_) -> false.
+
+eval_type_test(Test, Arg) ->
+    case eval_type_test_1(Test, Arg) of
+        true -> yes;
+        false -> no
+    end.
+
+eval_type_test_1(is_nonempty_list, Arg) ->
+    case Arg of
+        [_|_] -> true;
+        _ -> false
+    end;
+eval_type_test_1({is_tagged_tuple,Sz,Tag}, Arg) ->
+    if
+        tuple_size(Arg) =:= Sz, element(1, Arg) =:= Tag ->
+            true;
+        true ->
+            false
+    end;
+eval_type_test_1(Test, Arg) ->
+    erlang:Test(Arg).
+
+%%%
+%%% Combine bif:'=:=' and switch instructions
+%%% to switch instructions.
+%%%
+%%% Consider this code:
+%%%
+%%%     0:
+%%%       @ssa_bool = bif:'=:=' Var, literal 1
+%%%       br @ssa_bool, label 2, label 3
+%%%
+%%%     2:
+%%%       ret literal a
+%%%
+%%%     3:
+%%%       @ssa_bool:7 = bif:'=:=' Var, literal 2
+%%%       br @ssa_bool:7, label 4, label 999
+%%%
+%%%     4:
+%%%       ret literal b
+%%%
+%%%     999:
+%%%       .
+%%%       .
+%%%       .
+%%%
+%%% The two bif:'=:=' instructions can be combined
+%%% to a switch:
+%%%
+%%%     0:
+%%%       switch Var, label 999, [ { literal 1, label 2 },
+%%%                                { literal 2, label 3 } ]
+%%%
+%%%     2:
+%%%       ret literal a
+%%%
+%%%     4:
+%%%       ret literal b
+%%%
+%%%     999:
+%%%       .
+%%%       .
+%%%       .
+%%%
+
+combine_eqs(#st{bs=Blocks}=St) ->
+    Ls = reverse(beam_ssa:rpo(Blocks)),
+    combine_eqs_1(Ls, St).
+
+combine_eqs_1([L|Ls], #st{bs=Blocks0}=St0) ->
+    case comb_get_sw(L, St0) of
+        none ->
+            combine_eqs_1(Ls, St0);
+        {_,Arg,_,Fail0,List0} ->
+            case comb_get_sw(Fail0, St0) of
+                {true,Arg,Fail1,Fail,List1} ->
+                    %% Another switch/br with the same arguments was
+                    %% found. Try combining them.
+                    case combine_lists(Fail1, List0, List1, Blocks0) of
+                        none ->
+                            %% Different types of literals in the lists,
+                            %% or the success cases in the first switch
+                            %% could branch to the second switch
+                            %% (increasing code size and repeating tests).
+                            combine_eqs_1(Ls, St0);
+                        List ->
+                            %% Everything OK! Combine the lists.
+                            Sw0 = #b_switch{arg=Arg,fail=Fail,list=List},
+                            Sw = beam_ssa:normalize(Sw0),
+                            Blk0 = map_get(L, Blocks0),
+                            Blk = Blk0#b_blk{last=Sw},
+                            Blocks = Blocks0#{L:=Blk},
+                            St = St0#st{bs=Blocks},
+                            combine_eqs_1(Ls, St)
+                    end;
+                {true,_OtherArg,_,_,_} ->
+                    %% The other switch/br uses a different Arg.
+                    combine_eqs_1(Ls, St0);
+                {false,_,_,_,_} ->
+                    %% Not safe: Bindings of variables that will be used
+                    %% or execution of instructions with potential
+                    %% side effects will be skipped.
+                    combine_eqs_1(Ls, St0);
+                none ->
+                    %% No switch/br at this label.
+                    combine_eqs_1(Ls, St0)
+            end
+    end;
+combine_eqs_1([], St) -> St.
+
+comb_get_sw(L, Blocks) ->
+    comb_get_sw(L, true, Blocks).
+
+comb_get_sw(L, Safe0, #st{bs=Blocks,skippable=Skippable}) ->
+    #b_blk{is=Is,last=Last} = map_get(L, Blocks),
+    Safe1 = Safe0 andalso is_map_key(L, Skippable),
+    case Last of
+        #b_ret{} ->
+            none;
+        #b_br{bool=#b_var{}=Bool,succ=Succ,fail=Fail} ->
+            case comb_is(Is, Bool, Safe1) of
+                {none,_} ->
+                    none;
+                {#b_set{op={bif,'=:='},args=[#b_var{}=Arg,#b_literal{}=Lit]},Safe} ->
+                    {Safe,Arg,L,Fail,[{Lit,Succ}]};
+                {#b_set{},_} ->
+                    none
+            end;
+        #b_br{} ->
+            none;
+        #b_switch{arg=#b_var{}=Arg,fail=Fail,list=List} ->
+            {none,Safe} = comb_is(Is, none, Safe1),
+            {Safe,Arg,L,Fail,List}
+    end.
+
+comb_is([#b_set{dst=#b_var{}=Bool}=I], Bool, Safe) ->
+    {I,Safe};
+comb_is([#b_set{}=I|Is], Bool, Safe0) ->
+    Safe = Safe0 andalso beam_ssa:no_side_effect(I),
+    comb_is(Is, Bool, Safe);
+comb_is([], _Bool, Safe) ->
+    {none,Safe}.
+
+%% combine_list(Fail, List1, List2, Blocks) -> List|none.
+%%  Try to combine two switch lists, returning the combined
+%%  list or 'none' if not possible.
+%%
+%%  The values in the two lists must be all of the same type.
+%%
+%%  The code reached from the labels in the first list must
+%%  not reach the failure label (if they do, tests could
+%%  be repeated).
+%%
+
+combine_lists(Fail, L1, L2, Blocks) ->
+    Ls = beam_ssa:rpo([Lbl || {_,Lbl} <- L1], Blocks),
+    case member(Fail, Ls) of
+        true ->
+            %% One or more of labels in the first list
+            %% could reach the failure label. That
+            %% means that the second switch/br instruction
+            %% will be retained, increasing code size and
+            %% potentially also execution time.
+            none;
+        false ->
+            %% The combined switch will replace both original
+            %% br/switch instructions, leading to a reduction in code
+            %% size and potentially also in execution time.
+            combine_lists_1(L1, L2)
+    end.
+
+combine_lists_1(List0, List1) ->
+    case are_lists_compatible(List0, List1) of
+        true ->
+            First = maps:from_list(List0),
+            List0 ++ [{Val,Lbl} || {Val,Lbl} <- List1,
+                                   not is_map_key(Val, First)];
+        false ->
+            none
+    end.
+
+are_lists_compatible([{#b_literal{val=Val1},_}|_],
+                     [{#b_literal{val=Val2},_}|_]) ->
+    case lit_type(Val1) of
+        none -> false;
+        Type -> Type =:= lit_type(Val2)
+    end.
+
+lit_type(Val) ->
+    if
+        is_atom(Val) -> atom;
+        is_float(Val) -> float;
+        is_integer(Val) -> integer;
+        true -> none
+    end.
+
+%%%
+%%% Calculate used variables for each block.
+%%%
+
+used_vars(Linear) ->
+    used_vars(reverse(Linear), #{}, #{}).
+
+used_vars([{L,#b_blk{is=Is}=Blk}|Bs], UsedVars0, Skip0) ->
+    %% Calculate the variables used by each block and its
+    %% successors. This information is used by
+    %% shortcut_opt/1.
+
+    Successors = beam_ssa:successors(Blk),
+    Used0 = used_vars_succ(Successors, L, UsedVars0, []),
+    Used = used_vars_blk(Blk, Used0),
+    UsedVars = used_vars_phis(Is, L, Used, UsedVars0),
+
+    %% combine_eqs/1 needs different variable usage information than
+    %% shortcut_opt/1. The Skip map will have an entry for each block
+    %% that can be skipped (does not bind any variable used in
+    %% successor). This information is also useful for speeding up
+    %% shortcut_opt/1.
+
+    Defined0 = [Def || #b_set{dst=Def} <- Is],
+    Defined = ordsets:from_list(Defined0),
+    MaySkip = ordsets:is_disjoint(Defined, Used0),
+    case MaySkip of
+        true ->
+            Skip = Skip0#{L=>true},
+            used_vars(Bs, UsedVars, Skip);
+        false ->
+            used_vars(Bs, UsedVars, Skip0)
+    end;
+used_vars([], UsedVars, Skip) ->
+    {UsedVars,Skip}.
+
+used_vars_succ([S|Ss], L, LiveMap, Live0) ->
+    Key = {S,L},
+    case LiveMap of
+        #{Key:=Live} ->
+            %% The successor has a phi node, and the value for
+            %% this block in the phi node is a variable.
+            used_vars_succ(Ss, L, LiveMap, ordsets:union(Live, Live0));
+        #{S:=Live} ->
+            %% No phi node in the successor, or the value for
+            %% this block in the phi node is a literal.
+            used_vars_succ(Ss, L, LiveMap, ordsets:union(Live, Live0));
+        #{} ->
+            %% A peek_message block which has not been processed yet.
+            used_vars_succ(Ss, L, LiveMap, Live0)
+    end;
+used_vars_succ([], _, _, Acc) -> Acc.
+
+used_vars_phis(Is, L, Live0, UsedVars0) ->
+    UsedVars = UsedVars0#{L=>Live0},
+    Phis = takewhile(fun(#b_set{op=Op}) -> Op =:= phi end, Is),
+    case Phis of
+        [] ->
+            UsedVars;
+        [_|_] ->
+            PhiArgs = append([Args || #b_set{args=Args} <- Phis]),
+            case [{P,V} || {#b_var{}=V,P} <- PhiArgs] of
+                [_|_]=PhiVars ->
+                    PhiLive0 = rel2fam(PhiVars),
+                    PhiLive = [{{L,P},ordsets:union(ordsets:from_list(Vs), Live0)} ||
+                                  {P,Vs} <- PhiLive0],
+                    maps:merge(UsedVars, maps:from_list(PhiLive));
+                [] ->
+                    %% There were only literals in the phi node(s).
+                    UsedVars
+            end
+    end.
+
+used_vars_blk(#b_blk{is=Is,last=Last}, Used0) ->
+    Used = ordsets:union(Used0, beam_ssa:used(Last)),
+    used_vars_is(reverse(Is), Used).
+
+used_vars_is([#b_set{op=phi}|Is], Used) ->
+    used_vars_is(Is, Used);
+used_vars_is([#b_set{dst=Dst}=I|Is], Used0) ->
+    Used1 = ordsets:union(Used0, beam_ssa:used(I)),
+    Used = ordsets:del_element(Dst, Used1),
+    used_vars_is(Is, Used);
+used_vars_is([], Used) ->
+    Used.
+
+%%%
+%%% Common utilities.
+%%%
+
+sub(#b_set{args=Args}=I, Sub) ->
+    I#b_set{args=[sub_arg(A, Sub) || A <- Args]}.
+
+sub_arg(#b_var{}=Old, Sub) ->
+    case Sub of
+        #{Old:=New} -> New;
+        #{} -> Old
+    end;
+sub_arg(Old, _Sub) -> Old.
+
+rel2fam(S0) ->
+    S1 = sofs:relation(S0),
+    S = sofs:rel2fam(S1),
+    sofs:to_external(S).
diff --git a/lib/compiler/src/beam_ssa_funs.erl b/lib/compiler/src/beam_ssa_funs.erl
new file mode 100644
index 0000000000..e77c00fa89
--- /dev/null
+++ b/lib/compiler/src/beam_ssa_funs.erl
@@ -0,0 +1,149 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2018. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+%%%
+%%% If a fun is defined locally and only used for calls, it can be replaced
+%%% with direct calls to the relevant function. This greatly speeds up "named
+%%% functions" (which rely on make_fun to recreate themselves) and macros that
+%%% wrap their body in a fun.
+%%%
+
+-module(beam_ssa_funs).
+
+-export([module/2]).
+
+-include("beam_ssa.hrl").
+
+-import(lists, [foldl/3]).
+
+-spec module(Module, Options) -> Result when
+      Module :: beam_ssa:b_module(),
+      Options :: [compile:option()],
+      Result :: {ok, beam_ssa:b_module()}.
+
+module(#b_module{body=Fs0}=Module, _Opts) ->
+    Trampolines = foldl(fun find_trampolines/2, #{}, Fs0),
+    Fs = [lfo(F, Trampolines) || F <- Fs0],
+    {ok, Module#b_module{body=Fs}}.
+
+%% If a function does absolutely nothing beyond calling another function with
+%% the same arguments in the same order, we can shave off a call by short-
+%% circuiting it.
+find_trampolines(#b_function{args=Args,bs=Blocks}=F, Trampolines) ->
+    case map_get(0, Blocks) of
+        #b_blk{is=[#b_set{op=call,
+                          args=[#b_local{}=Actual | Args],
+                          dst=Dst}],
+               last=#b_ret{arg=Dst}} ->
+            {_, Name, Arity} = beam_ssa:get_anno(func_info, F),
+            Trampoline = #b_local{name=#b_literal{val=Name},arity=Arity},
+            Trampolines#{Trampoline => Actual};
+        _ ->
+            Trampolines
+    end.
+
+lfo(#b_function{bs=Blocks0}=F, Trampolines) ->
+    Linear0 = beam_ssa:linearize(Blocks0),
+    Linear = lfo_optimize(Linear0, lfo_analyze(Linear0, #{}), Trampolines),
+    F#b_function{bs=maps:from_list(Linear)}.
+
+%% Gather a map of the locally defined funs that are only used for calls.
+lfo_analyze([{_L,#b_blk{is=Is,last=Last}}|Bs], LFuns0) ->
+    LFuns = lfo_analyze_last(Last, lfo_analyze_is(Is, LFuns0)),
+    lfo_analyze(Bs, LFuns);
+lfo_analyze([], LFuns) ->
+    LFuns.
+
+lfo_analyze_is([#b_set{op=make_fun,
+                       dst=Dst,
+                       args=[#b_local{} | FreeVars]}=Def | Is],
+               LFuns0) ->
+    LFuns = maps:put(Dst, Def, maps:without(FreeVars, LFuns0)),
+    lfo_analyze_is(Is, LFuns);
+lfo_analyze_is([#b_set{op=call,
+                       args=[Fun | CallArgs]} | Is],
+               LFuns) when is_map_key(Fun, LFuns) ->
+    #b_set{args=[#b_local{arity=Arity} | FreeVars]} = map_get(Fun, LFuns),
+    case length(CallArgs) + length(FreeVars) of
+        Arity ->
+            lfo_analyze_is(Is, maps:without(CallArgs, LFuns));
+        _ ->
+            %% This will `badarity` at runtime, and it's easier to disable the
+            %% optimization than to simulate it.
+            lfo_analyze_is(Is, maps:without([Fun | CallArgs], LFuns))
+    end;
+lfo_analyze_is([#b_set{args=Args} | Is], LFuns) when map_size(LFuns) =/= 0 ->
+    %% We disqualify funs that are used outside calls because this forces them
+    %% to be created anyway, and the slight performance gain from direct calls
+    %% is not enough to offset the potential increase in stack frame size (the
+    %% free variables need to be kept alive until the call).
+    %%
+    %% This is also a kludge to make HiPE work, as the latter will generate
+    %% code with the assumption that the functions referenced in a make_fun
+    %% will only be used by funs, which will not be the case if we mix it with
+    %% direct calls. See cerl_cconv.erl for details.
+    %%
+    %% Future optimizations like delaying fun creation until use may require us
+    %% to copy affected functions so that HiPE gets its own to play with (until
+    %% HiPE is fixed anyway).
+    lfo_analyze_is(Is, maps:without(Args, LFuns));
+lfo_analyze_is([_ | Is], LFuns) ->
+    lfo_analyze_is(Is, LFuns);
+lfo_analyze_is([], LFuns) ->
+    LFuns.
+
+lfo_analyze_last(#b_switch{arg=Arg}, LFuns) ->
+    maps:remove(Arg, LFuns);
+lfo_analyze_last(#b_ret{arg=Arg}, LFuns) ->
+    maps:remove(Arg, LFuns);
+lfo_analyze_last(_, LFuns) ->
+    LFuns.
+
+%% Replace all calls of suitable funs with a direct call to their
+%% implementation. Liveness optimization will get rid of the make_fun
+%% instruction.
+lfo_optimize(Linear, LFuns, _Trampolines) when map_size(LFuns) =:= 0 ->
+    Linear;
+lfo_optimize(Linear, LFuns, Trampolines) ->
+    lfo_optimize_1(Linear, LFuns, Trampolines).
+
+lfo_optimize_1([{L,#b_blk{is=Is0}=Blk}|Bs], LFuns, Trampolines) ->
+    Is = lfo_optimize_is(Is0, LFuns, Trampolines),
+    [{L,Blk#b_blk{is=Is}} | lfo_optimize_1(Bs, LFuns, Trampolines)];
+lfo_optimize_1([], _LFuns, _Trampolines) ->
+    [].
+
+lfo_optimize_is([#b_set{op=call,
+                        args=[Fun | CallArgs]}=Call0 | Is],
+                LFuns, Trampolines) when is_map_key(Fun, LFuns) ->
+    #b_set{args=[Local | FreeVars]} = map_get(Fun, LFuns),
+    Args = [lfo_short_circuit(Local, Trampolines) | CallArgs ++ FreeVars],
+    Call = beam_ssa:add_anno(local_fun_opt, Fun, Call0#b_set{args=Args}),
+    [Call | lfo_optimize_is(Is, LFuns, Trampolines)];
+lfo_optimize_is([I | Is], LFuns, Trampolines) ->
+    [I | lfo_optimize_is(Is, LFuns, Trampolines)];
+lfo_optimize_is([], _LFuns, _Trampolines) ->
+    [].
+
+lfo_short_circuit(Call, Trampolines) ->
+    case maps:find(Call, Trampolines) of
+        {ok, Other} -> lfo_short_circuit(Other, Trampolines);
+        error -> Call
+    end.
diff --git a/lib/compiler/src/beam_ssa_lint.erl b/lib/compiler/src/beam_ssa_lint.erl
new file mode 100644
index 0000000000..a003607dab
--- /dev/null
+++ b/lib/compiler/src/beam_ssa_lint.erl
@@ -0,0 +1,349 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2018. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+%% Purpose: Internal consistency checks for the beam_ssa format.
+
+-module(beam_ssa_lint).
+
+-export([module/2, format_error/1]).
+
+-import(lists, [append/1, foldl/3, foreach/2]).
+
+-include("beam_ssa.hrl").
+
+-spec module(#b_module{}, [compile:option()]) ->
+                    {'ok',#b_module{}} | {'error',list()}.
+module(#b_module{body=Fs,name=Name}=Mod0, _Options) ->
+    Es0 = append([validate_function(F) || F <- Fs]),
+    case [{?MODULE,E} || E <- Es0] of
+        [] ->
+            {ok, Mod0};
+        [_|_]=Es ->
+            {error,[{atom_to_list(Name), Es}]}
+    end.
+
+-spec format_error(term()) -> iolist().
+format_error({{_M,F,A},{redefined_variable, Name, Old, I}}) ->
+    io_lib:format("~p/~p: Variable ~ts (~ts) redefined by ~ts",
+                  [F, A, format_var(Name), format_instr(Old), format_instr(I)]);
+format_error({{_M,F,A},{missing_phi_paths, Paths, I}}) ->
+    io_lib:format("~p/~p: Phi node ~ts doesn't define a value for these "
+                  "branches: ~w",
+                  [F, A, format_instr(I), Paths]);
+format_error({{_M,F,A},{garbage_phi_paths, Paths, I}}) ->
+    io_lib:format("~p/~p: Phi node ~ts defines a value for these unreachable "
+                  "or non-existent branches: ~w",
+                  [F, A, format_instr(I), Paths]);
+format_error({{_M,F,A},{unknown_phi_variable, Name, {From, _To}, I}}) ->
+    io_lib:format("~p/~p: Variable ~ts used in phi node ~ts is undefined on "
+                  "branch ~w",
+                  [F, A, format_var(Name), format_instr(I), From]);
+format_error({{_M,F,A},{unknown_block, Label, I}}) ->
+    io_lib:format("~p/~p: Unknown block ~p referenced in ~ts",
+                  [F, A, Label, I]);
+format_error({{_M,F,A},{unknown_variable, Name, I}}) ->
+    io_lib:format("~p/~p: Unbound variable ~ts used in ~ts",
+                  [F, A, format_var(Name), format_instr(I)]);
+format_error({{_M,F,A},{phi_inside_block, Name, Id}}) ->
+    io_lib:format("~p/~p: Phi node defining ~ts is not at start of block ~p",
+                  [F, A, format_var(Name), Id]);
+format_error({{_M,F,A},{undefined_label_in_phi, Label, I}}) ->
+    io_lib:format("~p/~p: Unknown block label ~p in phi node ~ts",
+                  [F, A, Label, format_instr(I)]).
+
+format_instr(I) ->
+    [$',beam_ssa_pp:format_instr(I),$'].
+
+format_var(V) ->
+    beam_ssa_pp:format_var(#b_var{name=V}).
+
+validate_function(F) ->
+    try
+        validate_variables(F),
+        []
+    catch
+        throw:Reason ->
+            #{func_info:=MFA} = F#b_function.anno,
+            [{MFA,Reason}];
+        Class:Error:Stack ->
+            io:fwrite("Function: ~p\n", [F#b_function.anno]),
+            erlang:raise(Class, Error, Stack)
+    end.
+
+-type defined_vars() :: gb_sets:set(beam_ssa:var_name()).
+
+-record(vvars,
+        {blocks :: #{ beam_ssa:label() => beam_ssa:b_blk() },
+         branch_def_vars :: #{
+           %% Describes the variable state at the time of this exact branch (phi
+           %% node validation).
+           {From :: beam_ssa:label(), To :: beam_ssa:label()} => defined_vars(),
+           %% Describes the variable state common to all branches leading to this
+           %% label (un/redefined variable validation).
+           beam_ssa:label() => defined_vars() },
+         defined_vars :: defined_vars()}).
+
+-spec validate_variables(beam_ssa:b_function()) -> ok.
+validate_variables(#b_function{ args = Args, bs = Blocks }) ->
+    %% Prefill the mapping with function arguments.
+    ArgNames = vvars_get_varnames(Args),
+    DefVars = gb_sets:from_list(ArgNames),
+    Entry = 0,
+
+    State = #vvars{blocks = Blocks,
+                   branch_def_vars = #{ Entry => DefVars },
+                   defined_vars = DefVars},
+    ok = vvars_assert_unique(Blocks, ArgNames),
+    vvars_phi_nodes(vvars_block(Entry, State)).
+
+%% Checks the uniqueness of all variables across all blocks.
+-spec vvars_assert_unique(Blocks, [beam_ssa:var_name()]) -> ok when
+      Blocks :: #{ beam_ssa:label() => beam_ssa:b_blk() }.
+vvars_assert_unique(Blocks, Args) ->
+    BlockIs = [Is || #b_blk{is=Is} <- maps:values(Blocks)],
+    Defined0 = maps:from_list([{V,argument} || V <- Args]),
+    _ = foldl(fun(Is, Defined) ->
+                      vvars_assert_unique_1(Is, Defined)
+              end, Defined0, BlockIs),
+    ok.
+
+-spec vvars_assert_unique_1(Is, Defined) -> ok when
+    Is :: list(beam_ssa:b_set()),
+    Defined :: #{ beam_ssa:var_name() => beam_ssa:b_set() }.
+vvars_assert_unique_1([#b_set{dst=#b_var{name=DstName}}=I|Is], Defined) ->
+    case Defined of
+        #{DstName:=Old} -> throw({redefined_variable, DstName, Old, I});
+        _ -> vvars_assert_unique_1(Is, Defined#{DstName=>I})
+    end;
+vvars_assert_unique_1([], Defined) ->
+    Defined.
+
+-spec vvars_phi_nodes(State :: #vvars{}) -> ok.
+vvars_phi_nodes(#vvars{ blocks = Blocks }=State) ->
+    _ = [vvars_phi_nodes_1(Is, Id, State) ||
+            {Id, #b_blk{ is = Is }} <- maps:to_list(Blocks)],
+    ok.
+
+-spec vvars_phi_nodes_1(Is, Id, State) -> ok when
+    Is :: list(beam_ssa:b_set()),
+    Id :: beam_ssa:label(),
+    State :: #vvars{}.
+vvars_phi_nodes_1([#b_set{ op = phi, args = Phis }=I | Is], Id, State) ->
+    ok = vvars_assert_phi_paths(Phis, I, Id, State),
+    ok = vvars_assert_phi_vars(Phis, I, Id, State),
+    vvars_phi_nodes_1(Is, Id, State);
+vvars_phi_nodes_1([_ | Is], Id, _State) ->
+    case [Dst || #b_set{op=phi,dst=#b_var{name=Dst}} <- Is] of
+        [Name|_] ->
+            throw({phi_inside_block, Name, Id});
+        [] ->
+            ok
+    end;
+vvars_phi_nodes_1([], _Id, _State) ->
+    ok.
+
+%% Checks whether all paths leading to this phi node are represented, and that
+%% it doesn't reference any non-existent paths.
+-spec vvars_assert_phi_paths(Phis, I, Id, State) -> ok when
+    Phis :: list({beam_ssa:argument(), beam_ssa:label()}),
+    Id :: beam_ssa:label(),
+    I :: beam_ssa:b_set(),
+    State :: #vvars{}.
+vvars_assert_phi_paths(Phis, I, Id, State) ->
+    BranchKeys = maps:keys(State#vvars.branch_def_vars),
+    RequiredPaths = ordsets:from_list([From || {From, To} <- BranchKeys, To =:= Id]),
+    ProvidedPaths = ordsets:from_list([From || {_Value, From} <- Phis]),
+    case ordsets:subtract(RequiredPaths, ProvidedPaths) of
+        [_|_]=MissingPaths -> throw({missing_phi_paths, MissingPaths, I});
+        [] -> ok
+    end.
+    %% %% The following test is sometimes useful to find missing optimizations.
+    %% %% It is commented out, though, because it can be triggered by
+    %% %% by weird but legal code.
+    %% case ordsets:subtract(ProvidedPaths, RequiredPaths) of
+    %%     [_|_]=GarbagePaths -> throw({garbage_phi_paths, GarbagePaths, I});
+    %%     [] -> ok
+    %% end.
+
+%% Checks whether all variables used in this phi node are defined in the branch
+%% they arrived on.
+-spec vvars_assert_phi_vars(Phis, I, Id, State) -> ok when
+    Phis :: list({beam_ssa:argument(), beam_ssa:label()}),
+    Id :: beam_ssa:label(),
+    I :: beam_ssa:b_set(),
+    State :: #vvars{}.
+vvars_assert_phi_vars(Phis, I, Id, #vvars{blocks=Blocks,
+                                          branch_def_vars=BranchDefVars}) ->
+    Vars = [{Var, From} || {#b_var{}=Var, From} <- Phis],
+    foreach(fun({#b_var{name=VarName}, From}) ->
+                    BranchKey = {From, Id},
+                    case BranchDefVars of
+                        #{BranchKey:=DefVars} ->
+                            case gb_sets:is_member(VarName, DefVars) of
+                                true -> ok;
+                                false -> throw({unknown_variable, VarName, I})
+                            end;
+                        #{} ->
+                            throw({unknown_phi_variable, VarName, BranchKey, I})
+                    end
+            end, Vars),
+    Labels = [From || {#b_literal{},From} <- Phis],
+    foreach(fun(Label) ->
+                    case Blocks of
+                        #{Label:=_} ->
+                            ok;
+                        #{} ->
+                            throw({undefined_label_in_phi, Label, I})
+                    end
+            end, Labels).
+
+-spec vvars_block(Id, State) -> #vvars{} when
+    Id :: beam_ssa:label(),
+    State :: #vvars{}.
+vvars_block(Id, State0) ->
+    #{ Id := #b_blk{ is = Is, last = Terminator} } = State0#vvars.blocks,
+    #{ Id := DefVars } = State0#vvars.branch_def_vars,
+    State = State0#vvars{ defined_vars = DefVars },
+    vvars_terminator(Terminator, Id, vvars_block_1(Is, State)).
+
+-spec vvars_block_1(Blocks, State) -> #vvars{} when
+    Blocks :: list(beam_ssa:b_blk()),
+    State :: #vvars{}.
+vvars_block_1([], State) ->
+    State;
+vvars_block_1([#b_set{ dst = #b_var{ name = DstName }, op = phi } | Is], State0) ->
+    %% We don't check phi node arguments at this point since we may not have
+    %% visited their definition yet. They'll be handled later on in
+    %% vvars_phi_nodes/1 after all blocks are processed.
+    vvars_block_1(Is, vvars_save_var(DstName, State0));
+vvars_block_1([#b_set{ dst = #b_var{ name = DstName }, args = Args }=I | Is], State0) ->
+    ok = vvars_assert_args(Args, I, State0),
+    vvars_block_1(Is, vvars_save_var(DstName, State0)).
+
+-spec vvars_terminator(Terminator, From, State) -> #vvars{} when
+    Terminator :: beam_ssa:terminator(),
+    From :: beam_ssa:label(),
+    State :: #vvars{}.
+vvars_terminator(#b_ret{ arg = Arg }=I, _From, State) ->
+    ok = vvars_assert_args([Arg], I, State),
+    State;
+vvars_terminator(#b_switch{arg=Arg,fail=Fail,list=Switch}=I, From, State) ->
+    ok = vvars_assert_args([Arg], I, State),
+    ok = vvars_assert_args([A || {A,_Lbl} <- Switch], I, State),
+    Labels = [Fail | [Lbl || {_Arg, Lbl} <- Switch]],
+    ok = vvars_assert_labels(Labels, I, State),
+    vvars_terminator_1(Labels, From, State);
+vvars_terminator(#b_br{bool=#b_literal{val=true},succ=Succ}=I, From, State) ->
+    Labels = [Succ],
+    ok = vvars_assert_labels(Labels, I, State),
+    vvars_terminator_1(Labels, From, State);
+vvars_terminator(#b_br{bool=#b_literal{val=false},fail=Fail}=I, From, State) ->
+    Labels = [Fail],
+    ok = vvars_assert_labels(Labels, I, State),
+    vvars_terminator_1(Labels, From, State);
+vvars_terminator(#b_br{ bool = Arg, succ = Succ, fail = Fail }=I, From, State) ->
+    ok = vvars_assert_args([Arg], I, State),
+    Labels = [Fail, Succ],
+    ok = vvars_assert_labels(Labels, I, State),
+    vvars_terminator_1(Labels, From, State).
+
+-spec vvars_terminator_1(Labels, From, State) -> #vvars{} when
+    Labels :: list(beam_ssa:label()),
+    From :: beam_ssa:label(),
+    State :: #vvars{}.
+vvars_terminator_1(Labels0, From, State0) ->
+    %% Filter out all branches that have already been taken. This should result
+    %% in either all of Labels0 or an empty list.
+    Labels = [To || To <- Labels0,
+              not maps:is_key({From, To}, State0#vvars.branch_def_vars)],
+    true = Labels =:= Labels0 orelse Labels =:= [], %Assertion
+    State1 = foldl(fun(To, State) ->
+                       vvars_save_branch(From, To, State)
+                   end, State0, Labels),
+    foldl(fun(To, State) ->
+              vvars_block(To, State)
+          end, State1, Labels).
+
+%% Gets all variable names in args, ignoring literals etc
+-spec vvars_get_varnames(Args) -> list(beam_ssa:var_name()) when
+    Args :: list(beam_ssa:argument()).
+vvars_get_varnames(Args) ->
+    [Name || #b_var{ name = Name } <- Args].
+
+%% Checks that all variables in Args are defined in all paths leading to the
+%% current State.
+-spec vvars_assert_args(Args, I, State) -> ok when
+    Args :: list(beam_ssa:argument()),
+    I :: beam_ssa:terminator() | beam_ssa:b_set(),
+    State :: #vvars{}.
+vvars_assert_args(Args, I, #vvars{defined_vars=DefVars}=State) ->
+    foreach(fun(#b_remote{mod=Mod,name=Name}) ->
+                    vvars_assert_args([Mod,Name], I, State);
+               (#b_var{name=Name}) ->
+                    case gb_sets:is_member(Name, DefVars) of
+                        true -> ok;
+                        false -> throw({unknown_variable,Name,I})
+                    end;
+               (_) -> ok
+            end, Args).
+
+%% Checks that all given labels are defined in State.
+-spec vvars_assert_labels(Labels, I, State) -> ok when
+    Labels :: list(beam_ssa:label()),
+    I :: beam_ssa:terminator(),
+    State :: #vvars{}.
+vvars_assert_labels(Labels, I, #vvars{blocks=Blocks}) ->
+    foreach(fun(Label) ->
+                case maps:is_key(Label, Blocks) of
+                    false -> throw({unknown_block, Label, I});
+                    true -> ok
+                end
+            end, Labels).
+
+-spec vvars_save_branch(From, To, State) -> #vvars{} when
+    From :: beam_ssa:label(),
+    To :: beam_ssa:label(),
+    State :: #vvars{}.
+vvars_save_branch(From, To, State) ->
+    DefVars = State#vvars.defined_vars,
+    Branches0 = State#vvars.branch_def_vars,
+    case Branches0 of
+        #{ To := LblDefVars } ->
+            MergedVars = vvars_merge_branches(DefVars, LblDefVars),
+
+            Branches = Branches0#{ To => MergedVars, {From, To} => DefVars },
+            State#vvars { branch_def_vars = Branches };
+        _ ->
+            Branches = Branches0#{ To => DefVars, {From, To} => DefVars },
+            State#vvars { branch_def_vars = Branches }
+    end.
+
+-spec vvars_merge_branches(New, Existing) -> defined_vars() when
+    New :: defined_vars(),
+    Existing :: defined_vars().
+vvars_merge_branches(New, Existing) ->
+    gb_sets:intersection(New, Existing).
+
+-spec vvars_save_var(VarName, State) -> #vvars{} when
+    VarName :: beam_ssa:var_name(),
+    State :: #vvars{}.
+vvars_save_var(VarName, State0) ->
+    %% vvars_assert_unique guarantees that variables are never set twice.
+    DefVars = gb_sets:insert(VarName, State0#vvars.defined_vars),
+    State0#vvars{ defined_vars = DefVars }.
diff --git a/lib/compiler/src/beam_ssa_opt.erl b/lib/compiler/src/beam_ssa_opt.erl
new file mode 100644
index 0000000000..90c0d3cf16
--- /dev/null
+++ b/lib/compiler/src/beam_ssa_opt.erl
@@ -0,0 +1,2279 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2018. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+%%%
+%%% This is a collection of various optimizations that don't need a separate
+%%% pass by themselves and/or are mutually beneficial to other passes.
+%%%
+%%% The optimizations are applied in "phases," each with a list of sub-passes
+%%% to run. These sub-passes are applied on all functions in a module before
+%%% moving on to the next phase, which lets us gather module-level information
+%%% in one phase and then apply it in the next without having to risk working
+%%% with incomplete information.
+%%%
+%%% Each sub-pass operates on a #st{} record and a func_info_db(), where the
+%%% former is just a #b_function{} whose blocks can be represented either in
+%%% linear or map form, and the latter is a map with information about all
+%%% functions in the module (see beam_ssa_opt.hrl for more details).
+%%%
+
+-module(beam_ssa_opt).
+-export([module/2]).
+
+-include("beam_ssa_opt.hrl").
+
+-import(lists, [all/2,append/1,duplicate/2,foldl/3,keyfind/3,member/2,
+                reverse/1,reverse/2,
+                splitwith/2,sort/1,takewhile/2,unzip/1]).
+
+-define(DEFAULT_REPETITIONS, 2).
+
+-spec module(beam_ssa:b_module(), [compile:option()]) ->
+                    {'ok',beam_ssa:b_module()}.
+
+-record(st, {ssa :: [{beam_ssa:label(),beam_ssa:b_blk()}] |
+                    beam_ssa:block_map(),
+             args :: [beam_ssa:b_var()],
+             cnt :: beam_ssa:label(),
+             anno :: beam_ssa:anno()}).
+-type st_map() :: #{ func_id() => #st{} }.
+
+module(Module, Opts) ->
+    FuncDb0 = case proplists:get_value(no_module_opt, Opts, false) of
+                  false -> build_func_db(Module);
+                  true -> #{}
+              end,
+
+    %% Passes that perform module-level optimizations are often aided by
+    %% optimizing callers before callees and vice versa, so we optimize all
+    %% functions in call order, flipping it as required.
+    StMap0 = build_st_map(Module),
+    Order = get_call_order_po(StMap0, FuncDb0),
+
+    Phases =
+        [{Order, prologue_passes(Opts)}] ++
+        repeat(Opts, repeated_passes(Opts), Order) ++
+        [{Order, epilogue_passes(Opts)}],
+
+    {StMap, _FuncDb} = foldl(fun({FuncIds, Ps}, {StMap, FuncDb}) ->
+                                     phase(FuncIds, Ps, StMap, FuncDb)
+                             end, {StMap0, FuncDb0}, Phases),
+
+    {ok, finish(Module, StMap)}.
+
+phase([FuncId | Ids], Ps, StMap, FuncDb0) ->
+    try compile:run_sub_passes(Ps, {map_get(FuncId, StMap), FuncDb0}) of
+        {St, FuncDb} ->
+            phase(Ids, Ps, StMap#{ FuncId => St }, FuncDb)
+    catch
+        Class:Error:Stack ->
+            #b_local{name=#b_literal{val=Name},arity=Arity} = FuncId,
+            io:fwrite("Function: ~w/~w\n", [Name,Arity]),
+            erlang:raise(Class, Error, Stack)
+    end;
+phase([], _Ps, StMap, FuncDb) ->
+    {StMap, FuncDb}.
+
+%% Repeats the given passes, alternating the order between runs to make the
+%% type pass more efficient.
+repeat(Opts, Ps, OrderA) ->
+    Repeat = proplists:get_value(ssa_opt_repeat, Opts, ?DEFAULT_REPETITIONS),
+    OrderB = reverse(OrderA),
+    repeat_1(Repeat, Ps, OrderA, OrderB).
+
+repeat_1(0, _Opts, _OrderA, _OrderB) ->
+    [];
+repeat_1(N, Ps, OrderA, OrderB) when N > 0, N rem 2 =:= 0 ->
+    [{OrderA, Ps} | repeat_1(N - 1, Ps, OrderA, OrderB)];
+repeat_1(N, Ps, OrderA, OrderB) when N > 0, N rem 2 =:= 1 ->
+    [{OrderB, Ps} | repeat_1(N - 1, Ps, OrderA, OrderB)].
+
+%%
+
+get_func_id(F) ->
+    {_Mod, Name, Arity} = beam_ssa:get_anno(func_info, F),
+    #b_local{name=#b_literal{val=Name}, arity=Arity}.
+
+-spec build_st_map(#b_module{}) -> st_map().
+build_st_map(#b_module{body=Fs}) ->
+    build_st_map_1(Fs, #{}).
+
+build_st_map_1([F | Fs], Map) ->
+    #b_function{anno=Anno,args=Args,cnt=Counter,bs=Bs} = F,
+    St = #st{anno=Anno,args=Args,cnt=Counter,ssa=Bs},
+    build_st_map_1(Fs, Map#{ get_func_id(F) => St });
+build_st_map_1([], Map) ->
+    Map.
+
+-spec finish(#b_module{}, st_map()) -> #b_module{}.
+finish(#b_module{body=Fs0}=Module, StMap) ->
+    Module#b_module{body=finish_1(Fs0, StMap)}.
+
+finish_1([F0 | Fs], StMap) ->
+    #st{anno=Anno,cnt=Counter,ssa=Blocks} = map_get(get_func_id(F0), StMap),
+    F = F0#b_function{anno=Anno,bs=Blocks,cnt=Counter},
+    [F | finish_1(Fs, StMap)];
+finish_1([], _StMap) ->
+    [].
+
+%%
+
+-define(PASS(N), {N,fun N/1}).
+
+prologue_passes(Opts) ->
+    Ps = [?PASS(ssa_opt_split_blocks),
+          ?PASS(ssa_opt_coalesce_phis),
+          ?PASS(ssa_opt_tail_phis),
+          ?PASS(ssa_opt_element),
+          ?PASS(ssa_opt_linearize),
+          ?PASS(ssa_opt_tuple_size),
+          ?PASS(ssa_opt_record),
+          ?PASS(ssa_opt_cse),                   %Helps the first type pass.
+          ?PASS(ssa_opt_type_start)],
+    passes_1(Ps, Opts).
+
+%% These passes all benefit from each other (in roughly this order), so they
+%% are repeated as required.
+repeated_passes(Opts) ->
+    Ps = [?PASS(ssa_opt_live),
+          ?PASS(ssa_opt_bs_puts),
+          ?PASS(ssa_opt_dead),
+          ?PASS(ssa_opt_cse),
+          ?PASS(ssa_opt_tail_phis),
+          ?PASS(ssa_opt_type_continue)],        %Must run after ssa_opt_dead to
+                                                %clean up phi nodes.
+    passes_1(Ps, Opts).
+
+epilogue_passes(Opts) ->
+    Ps = [?PASS(ssa_opt_type_finish),
+          ?PASS(ssa_opt_float),
+          ?PASS(ssa_opt_sw),
+
+          %% Run live one more time to clean up after the float and sw
+          %% passes.
+          ?PASS(ssa_opt_live),
+          ?PASS(ssa_opt_bsm),
+          ?PASS(ssa_opt_bsm_units),
+          ?PASS(ssa_opt_bsm_shortcut),
+          ?PASS(ssa_opt_blockify),
+          ?PASS(ssa_opt_sink),
+          ?PASS(ssa_opt_merge_blocks),
+          ?PASS(ssa_opt_get_tuple_element),
+          ?PASS(ssa_opt_trim_unreachable)],
+    passes_1(Ps, Opts).
+
+passes_1(Ps, Opts0) ->
+    Negations = [{list_to_atom("no_"++atom_to_list(N)),N} ||
+                    {N,_} <- Ps],
+    Opts = proplists:substitute_negations(Negations, Opts0),
+    [case proplists:get_value(Name, Opts, true) of
+         true ->
+             P;
+         false ->
+             {NoName,Name} = keyfind(Name, 2, Negations),
+             {NoName,fun(S) -> S end}
+     end || {Name,_}=P <- Ps].
+
+%% Builds a function information map with basic information about incoming and
+%% outgoing local calls, as well as whether the function is exported.
+-spec build_func_db(#b_module{}) -> func_info_db().
+build_func_db(#b_module{body=Fs,exports=Exports}) ->
+    try
+        fdb_1(Fs, gb_sets:from_list(Exports), #{})
+    catch
+        %% All module-level optimizations are invalid when a NIF can override a
+        %% function, so we have to bail out.
+        throw:load_nif -> #{}
+    end.
+
+fdb_1([#b_function{ args=Args,bs=Bs }=F | Fs], Exports, FuncDb0) ->
+    Id = get_func_id(F),
+
+    #b_local{name=#b_literal{val=Name}, arity=Arity} = Id,
+    Exported = gb_sets:is_element({Name, Arity}, Exports),
+    ArgTypes = duplicate(length(Args), #{}),
+
+    FuncDb1 = case FuncDb0 of
+                  %% We may have an entry already if someone's called us.
+                  #{ Id := Info } ->
+                      FuncDb0#{ Id := Info#func_info{ exported=Exported,
+                                                      arg_types=ArgTypes }};
+                  #{} ->
+                      FuncDb0#{ Id => #func_info{ exported=Exported,
+                                                  arg_types=ArgTypes }}
+              end,
+
+    FuncDb = beam_ssa:fold_rpo(fun(_L, #b_blk{is=Is}, FuncDb) ->
+                                       fdb_is(Is, Id, FuncDb)
+                               end, FuncDb1, Bs),
+
+    fdb_1(Fs, Exports, FuncDb);
+fdb_1([], _Exports, FuncDb) ->
+    FuncDb.
+
+fdb_is([#b_set{op=call,
+               args=[#b_local{}=Callee | _]} | Is],
+       Caller, FuncDb) ->
+    fdb_is(Is, Caller, fdb_update(Caller, Callee, FuncDb));
+fdb_is([#b_set{op=call,
+               args=[#b_remote{mod=#b_literal{val=erlang},
+                               name=#b_literal{val=load_nif}},
+                     _Path, _LoadInfo]} | _Is], _Caller, _FuncDb) ->
+    throw(load_nif);
+fdb_is([_ | Is], Caller, FuncDb) ->
+    fdb_is(Is, Caller, FuncDb);
+fdb_is([], _Caller, FuncDb) ->
+    FuncDb.
+
+fdb_update(Caller, Callee, FuncDb) ->
+    CallerVertex = maps:get(Caller, FuncDb, #func_info{}),
+    CalleeVertex = maps:get(Callee, FuncDb, #func_info{}),
+
+    Calls = ordsets:add_element(Callee, CallerVertex#func_info.out),
+    CalledBy = ordsets:add_element(Caller, CalleeVertex#func_info.in),
+
+    FuncDb#{ Caller => CallerVertex#func_info{out=Calls},
+             Callee => CalleeVertex#func_info{in=CalledBy} }.
+
+%% Returns the post-order of all local calls in this module. That is,
+%% called functions will be ordered before the functions calling them.
+%%
+%% Functions where module-level optimization is disabled are added last in
+%% arbitrary order.
+
+get_call_order_po(StMap, FuncDb) ->
+    Order = gco_po(FuncDb),
+    Order ++ maps:fold(fun(K, _V, Acc) ->
+                               case is_map_key(K, FuncDb) of
+                                   false -> [K | Acc];
+                                   true -> Acc
+                               end
+                       end, [], StMap).
+
+gco_po(FuncDb) ->
+    All = sort(maps:keys(FuncDb)),
+    {RPO,_} = gco_rpo(All, FuncDb, cerl_sets:new(), []),
+    reverse(RPO).
+
+gco_rpo([Id|Ids], FuncDb, Seen0, Acc0) ->
+    case cerl_sets:is_element(Id, Seen0) of
+        true ->
+            gco_rpo(Ids, FuncDb, Seen0, Acc0);
+        false ->
+            #func_info{out=Successors} = map_get(Id, FuncDb),
+            Seen1 = cerl_sets:add_element(Id, Seen0),
+            {Acc,Seen} = gco_rpo(Successors, FuncDb, Seen1, Acc0),
+            gco_rpo(Ids, FuncDb, Seen, [Id|Acc])
+    end;
+gco_rpo([], _, Seen, Acc) ->
+    {Acc,Seen}.
+
+%%%
+%%% Trivial sub passes.
+%%%
+
+ssa_opt_dead({#st{ssa=Linear}=St, FuncDb}) ->
+    {St#st{ssa=beam_ssa_dead:opt(Linear)}, FuncDb}.
+
+ssa_opt_linearize({#st{ssa=Blocks}=St, FuncDb}) ->
+    {St#st{ssa=beam_ssa:linearize(Blocks)}, FuncDb}.
+
+ssa_opt_type_start({#st{ssa=Linear0,args=Args,anno=Anno}=St0, FuncDb0}) ->
+    {Linear, FuncDb} = beam_ssa_type:opt_start(Linear0, Args, Anno, FuncDb0),
+    {St0#st{ssa=Linear}, FuncDb}.
+
+ssa_opt_type_continue({#st{ssa=Linear0,args=Args,anno=Anno}=St0, FuncDb0}) ->
+    {Linear, FuncDb} = beam_ssa_type:opt_continue(Linear0, Args, Anno, FuncDb0),
+    {St0#st{ssa=Linear}, FuncDb}.
+
+ssa_opt_type_finish({#st{args=Args,anno=Anno0}=St0, FuncDb0}) ->
+    {Anno, FuncDb} = beam_ssa_type:opt_finish(Args, Anno0, FuncDb0),
+    {St0#st{anno=Anno}, FuncDb}.
+
+ssa_opt_blockify({#st{ssa=Linear}=St, FuncDb}) ->
+    {St#st{ssa=maps:from_list(Linear)}, FuncDb}.
+
+ssa_opt_trim_unreachable({#st{ssa=Blocks}=St, FuncDb}) ->
+    {St#st{ssa=beam_ssa:trim_unreachable(Blocks)}, FuncDb}.
+
+%%%
+%%% Split blocks before certain instructions to enable more optimizations.
+%%%
+%%% Splitting before element/2 enables the optimization that swaps
+%%% element/2 instructions.
+%%%
+%%% Splitting before call and make_fun instructions gives more opportunities
+%%% for sinking get_tuple_element instructions.
+%%%
+
+ssa_opt_split_blocks({#st{ssa=Blocks0,cnt=Count0}=St, FuncDb}) ->
+    P = fun(#b_set{op={bif,element}}) -> true;
+           (#b_set{op=call}) -> true;
+           (#b_set{op=make_fun}) -> true;
+           (_) -> false
+        end,
+    {Blocks,Count} = beam_ssa:split_blocks(P, Blocks0, Count0),
+    {St#st{ssa=Blocks,cnt=Count}, FuncDb}.
+
+%%%
+%%% Coalesce phi nodes.
+%%%
+%%% Nested cases can led to code such as this:
+%%%
+%%%     10:
+%%%       _1 = phi {literal value1, label 8}, {Var, label 9}
+%%%       br 11
+%%%
+%%%     11:
+%%%       _2 = phi {_1, label 10}, {literal false, label 3}
+%%%
+%%% The phi nodes can be coalesced like this:
+%%%
+%%%     11:
+%%%       _2 = phi {literal value1, label 8}, {Var, label 9}, {literal false, label 3}
+%%%
+%%% Coalescing can help other optimizations, and can in some cases reduce register
+%%% shuffling (if the phi variables for two phi nodes happens to be allocated to
+%%% different registers).
+%%%
+
+ssa_opt_coalesce_phis({#st{ssa=Blocks0}=St, FuncDb}) ->
+    Ls = beam_ssa:rpo(Blocks0),
+    Blocks = c_phis_1(Ls, Blocks0),
+    {St#st{ssa=Blocks}, FuncDb}.
+
+c_phis_1([L|Ls], Blocks0) ->
+    case map_get(L, Blocks0) of
+        #b_blk{is=[#b_set{op=phi}|_]}=Blk ->
+            Blocks = c_phis_2(L, Blk, Blocks0),
+            c_phis_1(Ls, Blocks);
+        #b_blk{} ->
+            c_phis_1(Ls, Blocks0)
+    end;
+c_phis_1([], Blocks) -> Blocks.
+
+c_phis_2(L, #b_blk{is=Is0}=Blk0, Blocks0) ->
+    case c_phis_args(Is0, Blocks0) of
+        none ->
+            Blocks0;
+        {_,_,Preds}=Info ->
+            Is = c_rewrite_phis(Is0, Info),
+            Blk = Blk0#b_blk{is=Is},
+            Blocks = Blocks0#{L:=Blk},
+            c_fix_branches(Preds, L, Blocks)
+    end.
+
+c_phis_args([#b_set{op=phi,args=Args0}|Is], Blocks) ->
+    case c_phis_args_1(Args0, Blocks) of
+        none ->
+            c_phis_args(Is, Blocks);
+        Res ->
+            Res
+    end;
+c_phis_args(_, _Blocks) -> none.
+
+c_phis_args_1([{Var,Pred}|As], Blocks) ->
+    case c_get_pred_vars(Var, Pred, Blocks) of
+        none ->
+            c_phis_args_1(As, Blocks);
+        Result ->
+            Result
+    end;
+c_phis_args_1([], _Blocks) -> none.
+
+c_get_pred_vars(Var, Pred, Blocks) ->
+    case map_get(Pred, Blocks) of
+        #b_blk{is=[#b_set{op=phi,dst=Var,args=Args}]} ->
+            {Var,Pred,Args};
+        #b_blk{} ->
+            none
+    end.
+
+c_rewrite_phis([#b_set{op=phi,args=Args0}=I|Is], Info) ->
+    Args = c_rewrite_phi(Args0, Info),
+    [I#b_set{args=Args}|c_rewrite_phis(Is, Info)];
+c_rewrite_phis(Is, _Info) -> Is.
+
+c_rewrite_phi([{Var,Pred}|As], {Var,Pred,Values}) ->
+    Values ++ As;
+c_rewrite_phi([{Value,Pred}|As], {_,Pred,Values}) ->
+    [{Value,P} || {_,P} <- Values] ++ As;
+c_rewrite_phi([A|As], Info) ->
+    [A|c_rewrite_phi(As, Info)];
+c_rewrite_phi([], _Info) -> [].
+
+c_fix_branches([{_,Pred}|As], L, Blocks0) ->
+    #b_blk{last=Last0} = Blk0 = map_get(Pred, Blocks0),
+    #b_br{bool=#b_literal{val=true}} = Last0,   %Assertion.
+    Last = Last0#b_br{bool=#b_literal{val=true},succ=L,fail=L},
+    Blk = Blk0#b_blk{last=Last},
+    Blocks = Blocks0#{Pred:=Blk},
+    c_fix_branches(As, L, Blocks);
+c_fix_branches([], _, Blocks) -> Blocks.
+
+%%%
+%%% Eliminate phi nodes in the tail of a function.
+%%%
+%%% Try to eliminate short blocks that starts with a phi node
+%%% and end in a return. For example:
+%%%
+%%%    Result = phi { Res1, 4 }, { literal true, 5 }
+%%%    Ret = put_tuple literal ok, Result
+%%%    ret Ret
+%%%
+%%% The code in this block can be inserted at the end blocks 4 and
+%%% 5. Thus, the following code can be inserted into block 4:
+%%%
+%%%    Ret:1 = put_tuple literal ok, Res1
+%%%    ret Ret:1
+%%%
+%%% And the following code into block 5:
+%%%
+%%%    Ret:2 = put_tuple literal ok, literal true
+%%%    ret Ret:2
+%%%
+%%% Which can be further simplified to:
+%%%
+%%%    ret literal {ok, true}
+%%%
+%%% This transformation may lead to more code improvements:
+%%%
+%%%   - Stack trimming
+%%%   - Fewer test_heap instructions
+%%%   - Smaller stack frames
+%%%
+
+ssa_opt_tail_phis({#st{ssa=SSA0,cnt=Count0}=St, FuncDb}) ->
+    {SSA,Count} = opt_tail_phis(SSA0, Count0),
+    {St#st{ssa=SSA,cnt=Count}, FuncDb}.
+
+opt_tail_phis(Blocks, Count) when is_map(Blocks) ->
+    opt_tail_phis(maps:values(Blocks), Blocks, Count);
+opt_tail_phis(Linear0, Count0) when is_list(Linear0) ->
+    Blocks0 = maps:from_list(Linear0),
+    {Blocks,Count} = opt_tail_phis(Blocks0, Count0),
+    {beam_ssa:linearize(Blocks),Count}.
+
+opt_tail_phis([#b_blk{is=Is0,last=Last}|Bs], Blocks0, Count0) ->
+    case {Is0,Last} of
+        {[#b_set{op=phi,args=[_,_|_]}|_],#b_ret{arg=#b_var{}}=Ret} ->
+            {Phis,Is} = splitwith(fun(#b_set{op=Op}) -> Op =:= phi end, Is0),
+            case suitable_tail_ops(Is) of
+                true ->
+                    {Blocks,Count} = opt_tail_phi(Phis, Is, Ret,
+                                                  Blocks0, Count0),
+                    opt_tail_phis(Bs, Blocks, Count);
+                false ->
+                    opt_tail_phis(Bs, Blocks0, Count0)
+            end;
+        {_,_} ->
+            opt_tail_phis(Bs, Blocks0, Count0)
+    end;
+opt_tail_phis([], Blocks, Count) ->
+    {Blocks,Count}.
+
+opt_tail_phi(Phis0, Is, Ret, Blocks0, Count0) ->
+    Phis = rel2fam(reduce_phis(Phis0)),
+    {Blocks,Count,Cost} =
+        foldl(fun(PhiArg, Acc) ->
+                      opt_tail_phi_arg(PhiArg, Is, Ret, Acc)
+              end, {Blocks0,Count0,0}, Phis),
+    MaxCost = length(Phis) * 3 + 2,
+    if
+        Cost =< MaxCost ->
+            %% The transformation would cause at most a slight
+            %% increase in code size if no more optimizations
+            %% can be applied.
+            {Blocks,Count};
+        true ->
+            %% The code size would be increased too much.
+            {Blocks0,Count0}
+    end.
+
+reduce_phis([#b_set{dst=PhiDst,args=PhiArgs}|Is]) ->
+    [{L,{PhiDst,Val}} || {Val,L} <- PhiArgs] ++ reduce_phis(Is);
+reduce_phis([]) -> [].
+
+opt_tail_phi_arg({PredL,Sub0}, Is0, Ret0, {Blocks0,Count0,Cost0}) ->
+    Blk0 = map_get(PredL, Blocks0),
+    #b_blk{is=IsPrefix,last=#b_br{succ=Next,fail=Next}} = Blk0,
+    case is_exit_bif(IsPrefix) of
+        false ->
+            Sub1 = maps:from_list(Sub0),
+            {Is1,Count,Sub} = new_names(Is0, Sub1, Count0, []),
+            Is2 = [sub(I, Sub) || I <- Is1],
+            Cost = build_cost(Is2, Cost0),
+            Is = IsPrefix ++ Is2,
+            Ret = sub(Ret0, Sub),
+            Blk = Blk0#b_blk{is=Is,last=Ret},
+            Blocks = Blocks0#{PredL:=Blk},
+            {Blocks,Count,Cost};
+        true ->
+            %% The block ends in a call to a function that
+            %% will cause an exception.
+            {Blocks0,Count0,Cost0+3}
+    end.
+
+is_exit_bif([#b_set{op=call,
+                    args=[#b_remote{mod=#b_literal{val=Mod},
+                                    name=#b_literal{val=Name}}|Args]}]) ->
+    erl_bifs:is_exit_bif(Mod, Name, length(Args));
+is_exit_bif(_) -> false.
+
+new_names([#b_set{dst=Dst}=I|Is], Sub0, Count0, Acc) ->
+    {NewDst,Count} = new_var(Dst, Count0),
+    Sub = Sub0#{Dst=>NewDst},
+    new_names(Is, Sub, Count, [I#b_set{dst=NewDst}|Acc]);
+new_names([], Sub, Count, Acc) ->
+    {reverse(Acc),Count,Sub}.
+
+suitable_tail_ops(Is) ->
+    all(fun(#b_set{op=Op}) ->
+                is_suitable_tail_op(Op)
+        end, Is).
+
+is_suitable_tail_op({bif,_}) -> true;
+is_suitable_tail_op(put_list) -> true;
+is_suitable_tail_op(put_tuple) -> true;
+is_suitable_tail_op(_) -> false.
+
+build_cost([#b_set{op=put_list,args=Args}|Is], Cost) ->
+    case are_all_literals(Args) of
+        true ->
+            build_cost(Is, Cost);
+        false ->
+            build_cost(Is, Cost + 1)
+    end;
+build_cost([#b_set{op=put_tuple,args=Args}|Is], Cost) ->
+    case are_all_literals(Args) of
+        true ->
+            build_cost(Is, Cost);
+        false ->
+            build_cost(Is, Cost + length(Args) + 1)
+    end;
+build_cost([#b_set{op={bif,_},args=Args}|Is], Cost) ->
+    case are_all_literals(Args) of
+        true ->
+            build_cost(Is, Cost);
+        false ->
+            build_cost(Is, Cost + 1)
+    end;
+build_cost([], Cost) -> Cost.
+
+are_all_literals(Args) ->
+    all(fun(#b_literal{}) -> true;
+                (_) -> false
+             end, Args).
+
+%%%
+%%% Order element/2 calls.
+%%%
+%%% Order an unbroken chain of element/2 calls for the same tuple
+%%% with the same failure label so that the highest element is
+%%% retrieved first. That will allow the other element/2 calls to
+%%% be replaced with get_tuple_element/3 instructions.
+%%%
+
+ssa_opt_element({#st{ssa=Blocks}=St, FuncDb}) ->
+    %% Collect the information about element instructions in this
+    %% function.
+    GetEls = collect_element_calls(beam_ssa:linearize(Blocks)),
+
+    %% Collect the element instructions into chains. The
+    %% element calls in each chain are ordered in reverse
+    %% execution order.
+    Chains = collect_chains(GetEls, []),
+
+    %% For each chain, swap the first element call with the
+    %% element call with the highest index.
+    {St#st{ssa=swap_element_calls(Chains, Blocks)}, FuncDb}.
+
+collect_element_calls([{L,#b_blk{is=Is0,last=Last}}|Bs]) ->
+    case {Is0,Last} of
+        {[#b_set{op={bif,element},dst=Element,
+                 args=[#b_literal{val=N},#b_var{}=Tuple]},
+          #b_set{op=succeeded,dst=Bool,args=[Element]}],
+         #b_br{bool=Bool,succ=Succ,fail=Fail}} ->
+            Info = {L,Succ,{Tuple,Fail},N},
+            [Info|collect_element_calls(Bs)];
+        {_,_} ->
+            collect_element_calls(Bs)
+    end;
+collect_element_calls([]) -> [].
+
+collect_chains([{This,_,V,_}=El|Els], [{_,This,V,_}|_]=Chain) ->
+    %% Add to the previous chain.
+    collect_chains(Els, [El|Chain]);
+collect_chains([El|Els], [_,_|_]=Chain) ->
+    %% Save the previous chain and start a new chain.
+    [Chain|collect_chains(Els, [El])];
+collect_chains([El|Els], _Chain) ->
+    %% The previous chain is too short; discard it and start a new.
+    collect_chains(Els, [El]);
+collect_chains([], [_,_|_]=Chain) ->
+    %% Save the last chain.
+    [Chain];
+collect_chains([], _) ->  [].
+
+swap_element_calls([[{L,_,_,N}|_]=Chain|Chains], Blocks0) ->
+    Blocks = swap_element_calls_1(Chain, {N,L}, Blocks0),
+    swap_element_calls(Chains, Blocks);
+swap_element_calls([], Blocks) -> Blocks.
+
+swap_element_calls_1([{L1,_,_,N1}], {N2,L2}, Blocks) when N2 > N1 ->
+    %% We have reached the end of the chain, and the first
+    %% element instrution to be executed. Its index is lower
+    %% than the maximum index found while traversing the chain,
+    %% so we will need to swap the instructions.
+    #{L1:=Blk1,L2:=Blk2} = Blocks,
+    [#b_set{dst=Dst1}=GetEl1,Succ1] = Blk1#b_blk.is,
+    [#b_set{dst=Dst2}=GetEl2,Succ2] = Blk2#b_blk.is,
+    Is1 = [GetEl2,Succ1#b_set{args=[Dst2]}],
+    Is2 = [GetEl1,Succ2#b_set{args=[Dst1]}],
+    Blocks#{L1:=Blk1#b_blk{is=Is1},L2:=Blk2#b_blk{is=Is2}};
+swap_element_calls_1([{L,_,_,N1}|Els], {N2,_}, Blocks) when N1 > N2 ->
+    swap_element_calls_1(Els, {N2,L}, Blocks);
+swap_element_calls_1([_|Els], Highest, Blocks) ->
+    swap_element_calls_1(Els, Highest, Blocks);
+swap_element_calls_1([], _, Blocks) ->
+    %% Nothing to do. The element call with highest index
+    %% is already the first one to be executed.
+    Blocks.
+
+%%%
+%%% Record optimization.
+%%%
+%%% Replace tuple matching with an is_tagged_tuple instruction
+%%% when applicable.
+%%%
+
+ssa_opt_record({#st{ssa=Linear}=St, FuncDb}) ->
+    Blocks = maps:from_list(Linear),
+    {St#st{ssa=record_opt(Linear, Blocks)}, FuncDb}.
+
+record_opt([{L,#b_blk{is=Is0,last=Last}=Blk0}|Bs], Blocks) ->
+    Is = record_opt_is(Is0, Last, Blocks),
+    Blk = Blk0#b_blk{is=Is},
+    [{L,Blk}|record_opt(Bs, Blocks)];
+record_opt([], _Blocks) -> [].
+
+record_opt_is([#b_set{op={bif,is_tuple},dst=Bool,args=[Tuple]}=Set],
+              Last, Blocks) ->
+    case is_tagged_tuple(Tuple, Bool, Last, Blocks) of
+        {yes,Size,Tag} ->
+            Args = [Tuple,Size,Tag],
+            [Set#b_set{op=is_tagged_tuple,args=Args}];
+        no ->
+            [Set]
+    end;
+record_opt_is([I|Is]=Is0, #b_br{bool=Bool}=Last, Blocks) ->
+    case is_tagged_tuple_1(Is0, Last, Blocks) of
+        {yes,_Fail,Tuple,Arity,Tag} ->
+            Args = [Tuple,Arity,Tag],
+            [I#b_set{op=is_tagged_tuple,dst=Bool,args=Args}];
+        no ->
+            [I|record_opt_is(Is, Last, Blocks)]
+    end;
+record_opt_is([I|Is], Last, Blocks) ->
+    [I|record_opt_is(Is, Last, Blocks)];
+record_opt_is([], _Last, _Blocks) -> [].
+
+is_tagged_tuple(#b_var{}=Tuple, Bool,
+                #b_br{bool=Bool,succ=Succ,fail=Fail},
+                Blocks) ->
+    #b_blk{is=Is,last=Last} = map_get(Succ, Blocks),
+    case is_tagged_tuple_1(Is, Last, Blocks) of
+        {yes,Fail,Tuple,Arity,Tag} ->
+            {yes,Arity,Tag};
+        _ ->
+            no
+    end;
+is_tagged_tuple(_, _, _, _) -> no.
+
+is_tagged_tuple_1(Is, Last, Blocks) ->
+    case {Is,Last} of
+        {[#b_set{op={bif,tuple_size},dst=ArityVar,
+                 args=[#b_var{}=Tuple]},
+          #b_set{op={bif,'=:='},
+                 dst=Bool,
+                 args=[ArityVar, #b_literal{val=ArityVal}=Arity]}],
+         #b_br{bool=Bool,succ=Succ,fail=Fail}}
+          when is_integer(ArityVal) ->
+            SuccBlk = map_get(Succ, Blocks),
+            case is_tagged_tuple_2(SuccBlk, Tuple, Fail) of
+                no ->
+                    no;
+                {yes,Tag} ->
+                    {yes,Fail,Tuple,Arity,Tag}
+            end;
+        _ ->
+            no
+    end.
+
+is_tagged_tuple_2(#b_blk{is=Is,
+                         last=#b_br{bool=#b_var{}=Bool,fail=Fail}},
+                  Tuple, Fail) ->
+    is_tagged_tuple_3(Is, Bool, Tuple);
+is_tagged_tuple_2(#b_blk{}, _, _) -> no.
+
+is_tagged_tuple_3([#b_set{op=get_tuple_element,
+                          dst=TagVar,
+                          args=[#b_var{}=Tuple,#b_literal{val=0}]}|Is],
+                  Bool, Tuple) ->
+    is_tagged_tuple_4(Is, Bool, TagVar);
+is_tagged_tuple_3([_|Is], Bool, Tuple) ->
+    is_tagged_tuple_3(Is, Bool, Tuple);
+is_tagged_tuple_3([], _, _) -> no.
+
+is_tagged_tuple_4([#b_set{op={bif,'=:='},dst=Bool,
+                          args=[#b_var{}=TagVar,
+                                #b_literal{val=TagVal}=Tag]}],
+                 Bool, TagVar) when is_atom(TagVal) ->
+    {yes,Tag};
+is_tagged_tuple_4([_|Is], Bool, TagVar) ->
+    is_tagged_tuple_4(Is, Bool, TagVar);
+is_tagged_tuple_4([], _, _) -> no.
+
+%%%
+%%% Common subexpression elimination (CSE).
+%%%
+%%% Eliminate repeated evaluation of identical expressions. To avoid
+%%% increasing the size of the stack frame, we don't eliminate
+%%% subexpressions across instructions that clobber the X registers.
+%%%
+
+ssa_opt_cse({#st{ssa=Linear}=St, FuncDb}) ->
+    M = #{0=>#{}},
+    {St#st{ssa=cse(Linear, #{}, M)}, FuncDb}.
+
+cse([{L,#b_blk{is=Is0,last=Last0}=Blk}|Bs], Sub0, M0) ->
+    Es0 = map_get(L, M0),
+    {Is1,Es,Sub} = cse_is(Is0, Es0, Sub0, []),
+    Last = sub(Last0, Sub),
+    M = cse_successors(Is1, Blk, Es, M0),
+    Is = reverse(Is1),
+    [{L,Blk#b_blk{is=Is,last=Last}}|cse(Bs, Sub, M)];
+cse([], _, _) -> [].
+
+cse_successors([#b_set{op=succeeded,args=[Src]},Bif|_], Blk, EsSucc, M0) ->
+    case cse_suitable(Bif) of
+        true ->
+            %% The previous instruction only has a valid value at the success branch.
+            %% We must remove the substitution for Src from the failure branch.
+            #b_blk{last=#b_br{succ=Succ,fail=Fail}} = Blk,
+            M = cse_successors_1([Succ], EsSucc, M0),
+            EsFail = maps:filter(fun(_, Val) -> Val =/= Src end, EsSucc),
+            cse_successors_1([Fail], EsFail, M);
+        false ->
+            %% There can't be any replacement for Src in EsSucc. No need for
+            %% any special handling.
+            cse_successors_1(beam_ssa:successors(Blk), EsSucc, M0)
+    end;
+cse_successors(_Is, Blk, Es, M) ->
+    cse_successors_1(beam_ssa:successors(Blk), Es, M).
+
+cse_successors_1([L|Ls], Es0, M) ->
+    case M of
+        #{L:=Es1} when map_size(Es1) =:= 0 ->
+            %% The map is already empty. No need to do anything
+            %% since the intersection will be empty.
+            cse_successors_1(Ls, Es0, M);
+        #{L:=Es1} ->
+            %% Calculate the intersection of the two maps.
+            %% Both keys and values must match.
+            Es = maps:filter(fun(Key, Value) ->
+                                     case Es1 of
+                                         #{Key:=Value} -> true;
+                                         #{} -> false
+                                     end
+                             end, Es0),
+            cse_successors_1(Ls, Es0, M#{L:=Es});
+        #{} ->
+            cse_successors_1(Ls, Es0, M#{L=>Es0})
+    end;
+cse_successors_1([], _, M) -> M.
+
+cse_is([#b_set{op=succeeded,dst=Bool,args=[Src]}=I0|Is], Es, Sub0, Acc) ->
+    I = sub(I0, Sub0),
+    case I of
+        #b_set{args=[Src]} ->
+            cse_is(Is, Es, Sub0, [I|Acc]);
+        #b_set{} ->
+            %% The previous instruction has been eliminated. Eliminate the
+            %% 'succeeded' instruction too.
+            Sub = Sub0#{Bool=>#b_literal{val=true}},
+            cse_is(Is, Es, Sub, Acc)
+    end;
+cse_is([#b_set{dst=Dst}=I0|Is], Es0, Sub0, Acc) ->
+    I = sub(I0, Sub0),
+    case beam_ssa:clobbers_xregs(I) of
+        true ->
+            %% Retaining the expressions map across calls and other
+            %% clobbering instructions would work, but it would cause
+            %% the common subexpressions to be saved to Y registers,
+            %% which would probably increase the size of the stack
+            %% frame.
+            cse_is(Is, #{}, Sub0, [I|Acc]);
+        false ->
+            case cse_expr(I) of
+                none ->
+                    %% Not suitable for CSE.
+                    cse_is(Is, Es0, Sub0, [I|Acc]);
+                {ok,ExprKey} ->
+                    case Es0 of
+                        #{ExprKey:=Src} ->
+                            Sub = Sub0#{Dst=>Src},
+                            cse_is(Is, Es0, Sub, Acc);
+                        #{} ->
+                            Es = Es0#{ExprKey=>Dst},
+                            cse_is(Is, Es, Sub0, [I|Acc])
+                    end
+            end
+    end;
+cse_is([], Es, Sub, Acc) ->
+    {Acc,Es,Sub}.
+
+cse_expr(#b_set{op=Op,args=Args}=I) ->
+    case cse_suitable(I) of
+        true -> {ok,{Op,Args}};
+        false -> none
+    end.
+
+cse_suitable(#b_set{op=get_hd}) -> true;
+cse_suitable(#b_set{op=get_tl}) -> true;
+cse_suitable(#b_set{op=put_list}) -> true;
+cse_suitable(#b_set{op=get_tuple_element}) -> true;
+cse_suitable(#b_set{op=put_tuple}) -> true;
+cse_suitable(#b_set{op={bif,tuple_size}}) ->
+    %% Doing CSE for tuple_size/1 can prevent the
+    %% creation of test_arity and select_tuple_arity
+    %% instructions. That could decrease performance
+    %% and beam_validator could fail to understand
+    %% that tuple operations that follow are safe.
+    false;
+cse_suitable(#b_set{anno=Anno,op={bif,Name},args=Args}) ->
+    %% Doing CSE for floating point operators is unsafe.
+    %% Doing CSE for comparison operators would prevent
+    %% creation of 'test' instructions.
+    Arity = length(Args),
+    not (is_map_key(float_op, Anno) orelse
+         erl_internal:new_type_test(Name, Arity) orelse
+         erl_internal:comp_op(Name, Arity) orelse
+         erl_internal:bool_op(Name, Arity));
+cse_suitable(#b_set{}) -> false.
+
+%%%
+%%% Using floating point instructions.
+%%%
+%%% Use the special floating points version of arithmetic
+%%% instructions, if the operands are known to be floats or the result
+%%% of the operation will be a float.
+%%%
+%%% The float instructions were never used in guards before, so we
+%%% will take special care to keep not using them in guards.  Using
+%%% them in guards would require a new version of the 'fconv'
+%%% instruction that would take a failure label.  Since it is unlikely
+%%% that using float instructions in guards would be benefical, why
+%%% bother implementing a new instruction?  Also, implementing float
+%%% instructions in guards in HiPE could turn out to be a lot of work.
+%%%
+
+-record(fs,
+        {s=undefined :: 'undefined' | 'cleared',
+         regs=#{} :: #{beam_ssa:b_var():=beam_ssa:b_var()},
+         fail=none :: 'none' | beam_ssa:label(),
+         non_guards :: gb_sets:set(beam_ssa:label()),
+         bs :: beam_ssa:block_map()
+        }).
+
+ssa_opt_float({#st{ssa=Linear0,cnt=Count0}=St, FuncDb}) ->
+    NonGuards0 = float_non_guards(Linear0),
+    NonGuards = gb_sets:from_list(NonGuards0),
+    Blocks = maps:from_list(Linear0),
+    Fs = #fs{non_guards=NonGuards,bs=Blocks},
+    {Linear,Count} = float_opt(Linear0, Count0, Fs),
+    {St#st{ssa=Linear,cnt=Count}, FuncDb}.
+
+float_blk_is_in_guard(#b_blk{last=#b_br{fail=F}}, #fs{non_guards=NonGuards}) ->
+    not gb_sets:is_member(F, NonGuards);
+float_blk_is_in_guard(#b_blk{}, #fs{}) ->
+    false.
+
+float_non_guards([{L,#b_blk{is=Is}}|Bs]) ->
+    case Is of
+        [#b_set{op=landingpad}|_] ->
+            [L|float_non_guards(Bs)];
+        _ ->
+            float_non_guards(Bs)
+    end;
+float_non_guards([]) -> [?BADARG_BLOCK].
+
+float_opt([{L,Blk}|Bs0], Count0, Fs) ->
+    case float_blk_is_in_guard(Blk, Fs) of
+        true ->
+            %% This block is inside a guard. Don't do
+            %% any floating point optimizations.
+            {Bs,Count} = float_opt(Bs0, Count0, Fs),
+            {[{L,Blk}|Bs],Count};
+        false ->
+            %% This block is not inside a guard.
+            %% We can do the optimization.
+            float_opt_1(L, Blk, Bs0, Count0, Fs)
+    end;
+float_opt([], Count, _Fs) ->
+    {[],Count}.
+
+float_opt_1(L, #b_blk{is=Is0}=Blk0, Bs0, Count0, Fs0) ->
+    case float_opt_is(Is0, Fs0, Count0, []) of
+        {Is1,Fs1,Count1} ->
+            Fs2 = float_fail_label(Blk0, Fs1),
+            Fail = Fs2#fs.fail,
+            {Flush,Blk,Fs,Count2} = float_maybe_flush(Blk0, Fs2, Count1),
+            Split = float_split_conv(Is1, Blk),
+            {Blks0,Count3} = float_number(Split, L, Count2),
+            {Blks,Count4} = float_conv(Blks0, Fail, Count3),
+            {Bs,Count} = float_opt(Bs0, Count4, Fs),
+            {Blks++Flush++Bs,Count};
+        none ->
+            {Bs,Count} = float_opt(Bs0, Count0, Fs0),
+            {[{L,Blk0}|Bs],Count}
+    end.
+
+%% Split {float,convert} instructions into individual blocks.
+float_split_conv(Is0, Blk) ->
+    Br = #b_br{bool=#b_literal{val=true},succ=0,fail=0},
+    case splitwith(fun(#b_set{op=Op}) ->
+                           Op =/= {float,convert}
+                   end, Is0) of
+        {Is,[]} ->
+            [Blk#b_blk{is=Is}];
+        {[_|_]=Is1,[#b_set{op={float,convert}}=Conv|Is2]} ->
+            [#b_blk{is=Is1,last=Br},
+             #b_blk{is=[Conv],last=Br}|float_split_conv(Is2, Blk)];
+        {[],[#b_set{op={float,convert}}=Conv|Is1]} ->
+            [#b_blk{is=[Conv],last=Br}|float_split_conv(Is1, Blk)]
+    end.
+
+%% Number the blocks that were split.
+float_number([B|Bs0], FirstL, Count0) ->
+    {Bs,Count} = float_number(Bs0, Count0),
+    {[{FirstL,B}|Bs],Count}.
+
+float_number([B|Bs0], Count0) ->
+    {Bs,Count} = float_number(Bs0, Count0+1),
+    {[{Count0,B}|Bs],Count};
+float_number([], Count) ->
+    {[],Count}.
+
+%% Insert 'succeeded' instructions after each {float,convert}
+%% instruction.
+float_conv([{L,#b_blk{is=Is0}=Blk0}|Bs0], Fail, Count0) ->
+    case Is0 of
+        [#b_set{op={float,convert}}=Conv] ->
+            {Bool0,Count1} = new_reg('@ssa_bool', Count0),
+            Bool = #b_var{name=Bool0},
+            Succeeded = #b_set{op=succeeded,dst=Bool,
+                               args=[Conv#b_set.dst]},
+            Is = [Conv,Succeeded],
+            [{NextL,_}|_] = Bs0,
+            Br = #b_br{bool=Bool,succ=NextL,fail=Fail},
+            Blk = Blk0#b_blk{is=Is,last=Br},
+            {Bs,Count} = float_conv(Bs0, Fail, Count1),
+            {[{L,Blk}|Bs],Count};
+        [_|_] ->
+            case Bs0 of
+                [{NextL,_}|_] ->
+                    Br = #b_br{bool=#b_literal{val=true},
+                               succ=NextL,fail=NextL},
+                    Blk = Blk0#b_blk{last=Br},
+                    {Bs,Count} = float_conv(Bs0, Fail, Count0),
+                    {[{L,Blk}|Bs],Count};
+                [] ->
+                    {[{L,Blk0}],Count0}
+            end
+    end.
+
+float_maybe_flush(Blk0, #fs{s=cleared,fail=Fail,bs=Blocks}=Fs0, Count0) ->
+    #b_blk{last=#b_br{bool=#b_var{},succ=Succ}=Br} = Blk0,
+
+    %% If the success block starts with a floating point operation, we can
+    %% defer flushing to that block as long as it isn't a guard.
+    #b_blk{is=Is} = SuccBlk = map_get(Succ, Blocks),
+    SuccIsGuard = float_blk_is_in_guard(SuccBlk, Fs0),
+
+    case Is of
+        [#b_set{anno=#{float_op:=_}}|_] when not SuccIsGuard ->
+            %% No flush needed.
+            {[],Blk0,Fs0,Count0};
+        _ ->
+            %% Flush needed.
+            {Bool0,Count1} = new_reg('@ssa_bool', Count0),
+            Bool = #b_var{name=Bool0},
+
+            %% Allocate block numbers.
+            CheckL = Count1,              %For checkerror.
+            FlushL = Count1 + 1,          %For flushing of float regs.
+            Count = Count1 + 2,
+            Blk = Blk0#b_blk{last=Br#b_br{succ=CheckL}},
+
+            %% Build the block with the checkerror instruction.
+            CheckIs = [#b_set{op={float,checkerror},dst=Bool}],
+            CheckBr = #b_br{bool=Bool,succ=FlushL,fail=Fail},
+            CheckBlk = #b_blk{is=CheckIs,last=CheckBr},
+
+            %% Build the block that flushes all registers.
+            FlushIs = float_flush_regs(Fs0),
+            FlushBr = #b_br{bool=#b_literal{val=true},succ=Succ,fail=Succ},
+            FlushBlk = #b_blk{is=FlushIs,last=FlushBr},
+
+            %% Update state and blocks.
+            Fs = Fs0#fs{s=undefined,regs=#{},fail=none},
+            FlushBs = [{CheckL,CheckBlk},{FlushL,FlushBlk}],
+            {FlushBs,Blk,Fs,Count}
+    end;
+float_maybe_flush(Blk, Fs, Count) ->
+    {[],Blk,Fs,Count}.
+
+float_opt_is([#b_set{op=succeeded,args=[Src]}=I0],
+             #fs{regs=Rs}=Fs, Count, Acc) ->
+    case Rs of
+        #{Src:=Fr} ->
+            I = I0#b_set{args=[Fr]},
+            {reverse(Acc, [I]),Fs,Count};
+        #{} ->
+            {reverse(Acc, [I0]),Fs,Count}
+    end;
+float_opt_is([#b_set{anno=Anno0}=I0|Is0], Fs0, Count0, Acc) ->
+    case Anno0 of
+        #{float_op:=FTypes} ->
+            Anno = maps:remove(float_op, Anno0),
+            I1 = I0#b_set{anno=Anno},
+            {Is,Fs,Count} = float_make_op(I1, FTypes, Fs0, Count0),
+            float_opt_is(Is0, Fs, Count, reverse(Is, Acc));
+        #{} ->
+            float_opt_is(Is0, Fs0#fs{regs=#{}}, Count0, [I0|Acc])
+    end;
+float_opt_is([], Fs, _Count, _Acc) ->
+    #fs{s=undefined} = Fs,                      %Assertion.
+    none.
+
+float_make_op(#b_set{op={bif,Op},dst=Dst,args=As0}=I0,
+              Ts, #fs{s=S,regs=Rs0}=Fs, Count0) ->
+    {As1,Rs1,Count1} = float_load(As0, Ts, Rs0, Count0, []),
+    {As,Is0} = unzip(As1),
+    {Fr,Count2} = new_reg('@fr', Count1),
+    FrDst = #b_var{name=Fr},
+    I = I0#b_set{op={float,Op},dst=FrDst,args=As},
+    Rs = Rs1#{Dst=>FrDst},
+    Is = append(Is0) ++ [I],
+    case S of
+        undefined ->
+            {Ignore,Count} = new_reg('@ssa_ignore', Count2),
+            C = #b_set{op={float,clearerror},dst=#b_var{name=Ignore}},
+            {[C|Is],Fs#fs{s=cleared,regs=Rs},Count};
+        cleared ->
+            {Is,Fs#fs{regs=Rs},Count2}
+    end.
+
+float_load([A|As], [T|Ts], Rs0, Count0, Acc) ->
+    {Load,Rs,Count} = float_reg_arg(A, T, Rs0, Count0),
+    float_load(As, Ts, Rs, Count, [Load|Acc]);
+float_load([], [], Rs, Count, Acc) ->
+    {reverse(Acc),Rs,Count}.
+
+float_reg_arg(A, T, Rs, Count0) ->
+    case Rs of
+        #{A:=Fr} ->
+            {{Fr,[]},Rs,Count0};
+        #{} ->
+            {Fr,Count} = new_float_copy_reg(Count0),
+            Dst = #b_var{name=Fr},
+            I = float_load_reg(T, A, Dst),
+            {{Dst,[I]},Rs#{A=>Dst},Count}
+    end.
+
+float_load_reg(convert, #b_var{}=Src, Dst) ->
+    #b_set{op={float,convert},dst=Dst,args=[Src]};
+float_load_reg(convert, #b_literal{val=Val}=Src, Dst) ->
+    try float(Val) of
+        F ->
+            #b_set{op={float,put},dst=Dst,args=[#b_literal{val=F}]}
+    catch
+        error:_ ->
+            %% Let the exception happen at runtime.
+            #b_set{op={float,convert},dst=Dst,args=[Src]}
+    end;
+float_load_reg(float, Src, Dst) ->
+    #b_set{op={float,put},dst=Dst,args=[Src]}.
+
+new_float_copy_reg(Count) ->
+    new_reg('@fr_copy', Count).
+
+new_reg(Base, Count) ->
+    Fr = {Base,Count},
+    {Fr,Count+1}.
+
+float_fail_label(#b_blk{last=Last}, Fs) ->
+    case Last of
+        #b_br{bool=#b_var{},fail=Fail} ->
+            Fs#fs{fail=Fail};
+        _ ->
+            Fs
+    end.
+
+float_flush_regs(#fs{regs=Rs}) ->
+    maps:fold(fun(_, #b_var{name={'@fr_copy',_}}, Acc) ->
+                      Acc;
+                 (Dst, Fr, Acc) ->
+                      [#b_set{op={float,get},dst=Dst,args=[Fr]}|Acc]
+              end, [], Rs).
+
+%%%
+%%% Live optimization.
+%%%
+%%% Optimize instructions whose values are not used. They could be
+%%% removed if they have no side effects, or in a few cases replaced
+%%% with a cheaper instructions
+%%%
+
+ssa_opt_live({#st{ssa=Linear0}=St, FuncDb}) ->
+    RevLinear = reverse(Linear0),
+    Blocks0 = maps:from_list(RevLinear),
+    Blocks = live_opt(RevLinear, #{}, Blocks0),
+    Linear = beam_ssa:linearize(Blocks),
+    {St#st{ssa=Linear}, FuncDb}.
+
+live_opt([{L,Blk0}|Bs], LiveMap0, Blocks) ->
+    Blk1 = beam_ssa_share:block(Blk0, Blocks),
+    Successors = beam_ssa:successors(Blk1),
+    Live0 = live_opt_succ(Successors, L, LiveMap0, gb_sets:empty()),
+    {Blk,Live} = live_opt_blk(Blk1, Live0),
+    LiveMap = live_opt_phis(Blk#b_blk.is, L, Live, LiveMap0),
+    live_opt(Bs, LiveMap, Blocks#{L:=Blk});
+live_opt([], _, Acc) -> Acc.
+
+live_opt_succ([S|Ss], L, LiveMap, Live0) ->
+    Key = {S,L},
+    case LiveMap of
+        #{Key:=Live} ->
+            %% The successor has a phi node, and the value for
+            %% this block in the phi node is a variable.
+            live_opt_succ(Ss, L, LiveMap, gb_sets:union(Live, Live0));
+        #{S:=Live} ->
+            %% No phi node in the successor, or the value for
+            %% this block in the phi node is a literal.
+            live_opt_succ(Ss, L, LiveMap, gb_sets:union(Live, Live0));
+        #{} ->
+            %% A peek_message block which has not been processed yet.
+            live_opt_succ(Ss, L, LiveMap, Live0)
+    end;
+live_opt_succ([], _, _, Acc) -> Acc.
+
+live_opt_phis(Is, L, Live0, LiveMap0) ->
+    LiveMap = LiveMap0#{L=>Live0},
+    Phis = takewhile(fun(#b_set{op=Op}) -> Op =:= phi end, Is),
+    case Phis of
+        [] ->
+            LiveMap;
+        [_|_] ->
+            PhiArgs = append([Args || #b_set{args=Args} <- Phis]),
+            case [{P,V} || {#b_var{}=V,P} <- PhiArgs] of
+                [_|_]=PhiVars ->
+                    PhiLive0 = rel2fam(PhiVars),
+                    PhiLive = [{{L,P},gb_sets:union(gb_sets:from_list(Vs), Live0)} ||
+                                  {P,Vs} <- PhiLive0],
+                    maps:merge(LiveMap, maps:from_list(PhiLive));
+                [] ->
+                    %% There were only literals in the phi node(s).
+                    LiveMap
+            end
+    end.
+
+live_opt_blk(#b_blk{is=Is0,last=Last}=Blk, Live0) ->
+    Live1 = gb_sets:union(Live0, gb_sets:from_ordset(beam_ssa:used(Last))),
+    {Is,Live} = live_opt_is(reverse(Is0), Live1, []),
+    {Blk#b_blk{is=Is},Live}.
+
+live_opt_is([#b_set{op=phi,dst=Dst}=I|Is], Live, Acc) ->
+    case gb_sets:is_member(Dst, Live) of
+        true ->
+            live_opt_is(Is, Live, [I|Acc]);
+        false ->
+            live_opt_is(Is, Live, Acc)
+    end;
+live_opt_is([#b_set{op=succeeded,dst=SuccDst=SuccDstVar,
+                    args=[Dst]}=SuccI,
+             #b_set{dst=Dst}=I|Is], Live0, Acc) ->
+    case gb_sets:is_member(Dst, Live0) of
+        true ->
+            Live1 = gb_sets:add(Dst, Live0),
+            Live = gb_sets:delete_any(SuccDst, Live1),
+            live_opt_is([I|Is], Live, [SuccI|Acc]);
+        false ->
+            case live_opt_unused(I) of
+                {replace,NewI0} ->
+                    NewI = NewI0#b_set{dst=SuccDstVar},
+                    live_opt_is([NewI|Is], Live0, Acc);
+                keep ->
+                    case gb_sets:is_member(SuccDst, Live0) of
+                        true ->
+                            Live1 = gb_sets:add(Dst, Live0),
+                            Live = gb_sets:delete(SuccDst, Live1),
+                            live_opt_is([I|Is], Live, [SuccI|Acc]);
+                        false ->
+                            live_opt_is([I|Is], Live0, Acc)
+                    end
+            end
+    end;
+live_opt_is([#b_set{dst=Dst}=I|Is], Live0, Acc) ->
+    case gb_sets:is_member(Dst, Live0) of
+        true ->
+            Live1 = gb_sets:union(Live0, gb_sets:from_ordset(beam_ssa:used(I))),
+            Live = gb_sets:delete(Dst, Live1),
+            live_opt_is(Is, Live, [I|Acc]);
+        false ->
+            case beam_ssa:no_side_effect(I) of
+                true ->
+                    live_opt_is(Is, Live0, Acc);
+                false ->
+                    Live = gb_sets:union(Live0, gb_sets:from_ordset(beam_ssa:used(I))),
+                    live_opt_is(Is, Live, [I|Acc])
+            end
+    end;
+live_opt_is([], Live, Acc) ->
+    {Acc,Live}.
+
+live_opt_unused(#b_set{op=get_map_element}=Set) ->
+    {replace,Set#b_set{op=has_map_field}};
+live_opt_unused(_) -> keep.
+
+%%%
+%%% Optimize binary matching.
+%%%
+%%% * If the value of segment is never extracted, rewrite
+%%%   to a bs_skip instruction.
+%%%
+%%% * Coalesce adjacent bs_skip instructions and skip instructions
+%%%   with bs_test_tail.
+%%%
+
+ssa_opt_bsm({#st{ssa=Linear}=St, FuncDb}) ->
+    Extracted0 = bsm_extracted(Linear),
+    Extracted = cerl_sets:from_list(Extracted0),
+    {St#st{ssa=bsm_skip(Linear, Extracted)}, FuncDb}.
+
+bsm_skip([{L,#b_blk{is=Is0}=Blk}|Bs0], Extracted) ->
+    Bs = bsm_skip(Bs0, Extracted),
+    Is = bsm_skip_is(Is0, Extracted),
+    coalesce_skips({L,Blk#b_blk{is=Is}}, Bs);
+bsm_skip([], _) -> [].
+
+bsm_skip_is([I0|Is], Extracted) ->
+    case I0 of
+        #b_set{op=bs_match,
+               dst=Ctx,
+               args=[#b_literal{val=T}=Type,PrevCtx|Args0]}
+          when T =/= string, T =/= skip ->
+            I = case cerl_sets:is_element(Ctx, Extracted) of
+                    true ->
+                        I0;
+                    false ->
+                        %% The value is never extracted.
+                        Args = [#b_literal{val=skip},PrevCtx,Type|Args0],
+                        I0#b_set{args=Args}
+                end,
+            [I|Is];
+        #b_set{} ->
+            [I0|bsm_skip_is(Is, Extracted)]
+    end;
+bsm_skip_is([], _) -> [].
+
+bsm_extracted([{_,#b_blk{is=Is}}|Bs]) ->
+    case Is of
+        [#b_set{op=bs_extract,args=[Ctx]}|_] ->
+            [Ctx|bsm_extracted(Bs)];
+        _ ->
+            bsm_extracted(Bs)
+    end;
+bsm_extracted([]) -> [].
+
+coalesce_skips({L,#b_blk{is=[#b_set{op=bs_extract}=Extract|Is0],
+                         last=Last0}=Blk0}, Bs0) ->
+    case coalesce_skips_is(Is0, Last0, Bs0) of
+        not_possible ->
+            [{L,Blk0}|Bs0];
+        {Is,Last,Bs} ->
+            Blk = Blk0#b_blk{is=[Extract|Is],last=Last},
+            [{L,Blk}|Bs]
+    end;
+coalesce_skips({L,#b_blk{is=Is0,last=Last0}=Blk0}, Bs0) ->
+    case coalesce_skips_is(Is0, Last0, Bs0) of
+        not_possible ->
+            [{L,Blk0}|Bs0];
+        {Is,Last,Bs} ->
+            Blk = Blk0#b_blk{is=Is,last=Last},
+            [{L,Blk}|Bs]
+    end.
+
+coalesce_skips_is([#b_set{op=bs_match,
+                          args=[#b_literal{val=skip},
+                                Ctx0,Type,Flags,
+                                #b_literal{val=Size0},
+                                #b_literal{val=Unit0}]}=Skip0,
+                   #b_set{op=succeeded}],
+                  #b_br{succ=L2,fail=Fail}=Br0,
+                  Bs0) when is_integer(Size0) ->
+    case Bs0 of
+        [{L2,#b_blk{is=[#b_set{op=bs_match,
+                               dst=SkipDst,
+                               args=[#b_literal{val=skip},_,_,_,
+                                     #b_literal{val=Size1},
+                                     #b_literal{val=Unit1}]},
+                        #b_set{op=succeeded}=Succeeded],
+                    last=#b_br{fail=Fail}=Br}}|Bs] when is_integer(Size1) ->
+            SkipBits = Size0 * Unit0 + Size1 * Unit1,
+            Skip = Skip0#b_set{dst=SkipDst,
+                               args=[#b_literal{val=skip},Ctx0,
+                                     Type,Flags,
+                                     #b_literal{val=SkipBits},
+                                     #b_literal{val=1}]},
+            Is = [Skip,Succeeded],
+            {Is,Br,Bs};
+        [{L2,#b_blk{is=[#b_set{op=bs_test_tail,
+                               args=[_Ctx,#b_literal{val=TailSkip}]}],
+                    last=#b_br{succ=NextSucc,fail=Fail}}}|Bs] ->
+            SkipBits = Size0 * Unit0,
+            TestTail = Skip0#b_set{op=bs_test_tail,
+                                   args=[Ctx0,#b_literal{val=SkipBits+TailSkip}]},
+            Br = Br0#b_br{bool=TestTail#b_set.dst,succ=NextSucc},
+            Is = [TestTail],
+            {Is,Br,Bs};
+        _ ->
+            not_possible
+    end;
+coalesce_skips_is(_, _, _) ->
+    not_possible.
+
+%%%
+%%% Short-cutting binary matching instructions.
+%%%
+
+ssa_opt_bsm_shortcut({#st{ssa=Linear}=St, FuncDb}) ->
+    Positions = bsm_positions(Linear, #{}),
+    case map_size(Positions) of
+        0 ->
+            %% No binary matching instructions.
+            {St, FuncDb};
+        _ ->
+            {St#st{ssa=bsm_shortcut(Linear, Positions)}, FuncDb}
+    end.
+
+bsm_positions([{L,#b_blk{is=Is,last=Last}}|Bs], PosMap0) ->
+    PosMap = bsm_positions_is(Is, PosMap0),
+    case {Is,Last} of
+        {[#b_set{op=bs_test_tail,dst=Bool,args=[Ctx,#b_literal{val=Bits0}]}],
+         #b_br{bool=Bool,fail=Fail}} ->
+            Bits = Bits0 + map_get(Ctx, PosMap0),
+            bsm_positions(Bs, PosMap#{L=>{Bits,Fail}});
+        {_,_} ->
+            bsm_positions(Bs, PosMap)
+    end;
+bsm_positions([], PosMap) -> PosMap.
+
+bsm_positions_is([#b_set{op=bs_start_match,dst=New}|Is], PosMap0) ->
+    PosMap = PosMap0#{New=>0},
+    bsm_positions_is(Is, PosMap);
+bsm_positions_is([#b_set{op=bs_match,dst=New,args=Args}|Is], PosMap0) ->
+    [_,Old|_] = Args,
+    #{Old:=Bits0} = PosMap0,
+    Bits = bsm_update_bits(Args, Bits0),
+    PosMap = PosMap0#{New=>Bits},
+    bsm_positions_is(Is, PosMap);
+bsm_positions_is([_|Is], PosMap) ->
+    bsm_positions_is(Is, PosMap);
+bsm_positions_is([], PosMap) -> PosMap.
+
+bsm_update_bits([#b_literal{val=string},_,#b_literal{val=String}], Bits) ->
+    Bits + bit_size(String);
+bsm_update_bits([#b_literal{val=utf8}|_], Bits) ->
+    Bits + 8;
+bsm_update_bits([#b_literal{val=utf16}|_], Bits) ->
+    Bits + 16;
+bsm_update_bits([#b_literal{val=utf32}|_], Bits) ->
+    Bits + 32;
+bsm_update_bits([_,_,_,#b_literal{val=Sz},#b_literal{val=U}], Bits)
+  when is_integer(Sz) ->
+    Bits + Sz*U;
+bsm_update_bits(_, Bits) -> Bits.
+
+bsm_shortcut([{L,#b_blk{is=Is,last=Last0}=Blk}|Bs], PosMap) ->
+    case {Is,Last0} of
+        {[#b_set{op=bs_match,dst=New,args=[_,Old|_]},
+          #b_set{op=succeeded,dst=Bool,args=[New]}],
+         #b_br{bool=Bool,fail=Fail}} ->
+            case PosMap of
+                #{Old:=Bits,Fail:={TailBits,NextFail}} when Bits > TailBits ->
+                    Last = Last0#b_br{fail=NextFail},
+                    [{L,Blk#b_blk{last=Last}}|bsm_shortcut(Bs, PosMap)];
+                #{} ->
+                    [{L,Blk}|bsm_shortcut(Bs, PosMap)]
+            end;
+        {_,_} ->
+            [{L,Blk}|bsm_shortcut(Bs, PosMap)]
+    end;
+bsm_shortcut([], _PosMap) -> [].
+
+%%%
+%%% Eliminate redundant bs_test_unit2 instructions.
+%%%
+
+ssa_opt_bsm_units({#st{ssa=Linear}=St, FuncDb}) ->
+    {St#st{ssa=bsm_units(Linear, #{})}, FuncDb}.
+
+bsm_units([{L,#b_blk{last=#b_br{succ=Succ,fail=Fail}}=Block0} | Bs], UnitMaps0) ->
+    UnitsIn = maps:get(L, UnitMaps0, #{}),
+    {Block, UnitsOut} = bsm_units_skip(Block0, UnitsIn),
+    UnitMaps1 = bsm_units_join(Succ, UnitsOut, UnitMaps0),
+    UnitMaps = bsm_units_join(Fail, UnitsIn, UnitMaps1),
+    [{L, Block} | bsm_units(Bs, UnitMaps)];
+bsm_units([{L,#b_blk{last=#b_switch{fail=Fail,list=Switch}}=Block} | Bs], UnitMaps0) ->
+    UnitsIn = maps:get(L, UnitMaps0, #{}),
+    Labels = [Fail | [Lbl || {_Arg, Lbl} <- Switch]],
+    UnitMaps = foldl(fun(Lbl, UnitMaps) ->
+                             bsm_units_join(Lbl, UnitsIn, UnitMaps)
+                     end, UnitMaps0, Labels),
+    [{L, Block} | bsm_units(Bs, UnitMaps)];
+bsm_units([{L, Block} | Bs], UnitMaps) ->
+    [{L, Block} | bsm_units(Bs, UnitMaps)];
+bsm_units([], _UnitMaps) ->
+    [].
+
+bsm_units_skip(Block, Units) ->
+    bsm_units_skip_1(Block#b_blk.is, Block, Units).
+
+bsm_units_skip_1([#b_set{op=bs_start_match,dst=New}|_], Block, Units) ->
+    %% We bail early since there can't be more than one match per block.
+    {Block, Units#{ New => 1 }};
+bsm_units_skip_1([#b_set{op=bs_match,
+                         dst=New,
+                         args=[#b_literal{val=skip},
+                               Ctx,
+                               #b_literal{val=binary},
+                               _Flags,
+                               #b_literal{val=all},
+                               #b_literal{val=OpUnit}]}=Skip | Test],
+                 Block0, Units) ->
+    [#b_set{op=succeeded,dst=Bool,args=[New]}] = Test, %Assertion.
+    #b_br{bool=Bool} = Last0 = Block0#b_blk.last, %Assertion.
+    CtxUnit = map_get(Ctx, Units),
+    if
+        CtxUnit rem OpUnit =:= 0 ->
+            Is = takewhile(fun(I) -> I =/= Skip end, Block0#b_blk.is),
+            Last = Last0#b_br{bool=#b_literal{val=true}},
+            Block = Block0#b_blk{is=Is,last=Last},
+            {Block, Units#{ New => CtxUnit }};
+        CtxUnit rem OpUnit =/= 0 ->
+            {Block0, Units#{ New => OpUnit, Ctx => OpUnit }}
+    end;
+bsm_units_skip_1([#b_set{op=bs_match,dst=New,args=Args}|_], Block, Units) ->
+    [_,Ctx|_] = Args,
+    CtxUnit = map_get(Ctx, Units),
+    OpUnit = bsm_op_unit(Args),
+    {Block, Units#{ New => gcd(OpUnit, CtxUnit) }};
+bsm_units_skip_1([_I | Is], Block, Units) ->
+    bsm_units_skip_1(Is, Block, Units);
+bsm_units_skip_1([], Block, Units) ->
+    {Block, Units}.
+
+bsm_op_unit([_,_,_,Size,#b_literal{val=U}]) ->
+    case Size of
+        #b_literal{val=Sz} when is_integer(Sz) -> Sz*U;
+        _ -> U
+    end;
+bsm_op_unit([#b_literal{val=string},_,#b_literal{val=String}]) ->
+    bit_size(String);
+bsm_op_unit([#b_literal{val=utf8}|_]) ->
+    8;
+bsm_op_unit([#b_literal{val=utf16}|_]) ->
+    16;
+bsm_op_unit([#b_literal{val=utf32}|_]) ->
+    32;
+bsm_op_unit(_) ->
+    1.
+
+%% Several paths can lead to the same match instruction and the inferred units
+%% may differ between them, so we can only keep the information that is common
+%% to all paths.
+bsm_units_join(Lbl, MapA, UnitMaps0) when is_map_key(Lbl, UnitMaps0) ->
+    MapB = map_get(Lbl, UnitMaps0),
+    Merged = if
+                 map_size(MapB) =< map_size(MapA) ->
+                     bsm_units_join_1(maps:keys(MapB), MapA, MapB);
+                 map_size(MapB) > map_size(MapA) ->
+                     bsm_units_join_1(maps:keys(MapA), MapB, MapA)
+             end,
+    UnitMaps0#{Lbl := Merged};
+bsm_units_join(Lbl, MapA, UnitMaps0) when MapA =/= #{} ->
+    UnitMaps0#{Lbl => MapA};
+bsm_units_join(_Lbl, _MapA, UnitMaps0) ->
+    UnitMaps0.
+
+bsm_units_join_1([Key | Keys], Left, Right) when is_map_key(Key, Left) ->
+    UnitA = map_get(Key, Left),
+    UnitB = map_get(Key, Right),
+    bsm_units_join_1(Keys, Left, Right#{Key := gcd(UnitA, UnitB)});
+bsm_units_join_1([Key | Keys], Left, Right) ->
+    bsm_units_join_1(Keys, Left, maps:remove(Key, Right));
+bsm_units_join_1([], _MapA, Right) ->
+    Right.
+
+%%%
+%%% Optimize binary construction.
+%%%
+%%% If an integer segment or a float segment has a literal size and
+%%% a literal value, convert to a binary segment. Coalesce adjacent
+%%% literal binary segments. Literal binary segments will be converted
+%%% to bs_put_string instructions in later pass.
+%%%
+
+ssa_opt_bs_puts({#st{ssa=Linear0,cnt=Count0}=St, FuncDb}) ->
+    {Linear,Count} = opt_bs_puts(Linear0, Count0, []),
+    {St#st{ssa=Linear,cnt=Count}, FuncDb}.
+
+opt_bs_puts([{L,#b_blk{is=Is}=Blk0}|Bs], Count0, Acc0) ->
+    case Is of
+        [#b_set{op=bs_put}=I0] ->
+            case opt_bs_put(L, I0, Blk0, Count0, Acc0) of
+                not_possible ->
+                    opt_bs_puts(Bs, Count0, [{L,Blk0}|Acc0]);
+                {Count,Acc1} ->
+                    Acc = opt_bs_puts_merge(Acc1),
+                    opt_bs_puts(Bs, Count, Acc)
+            end;
+        _ ->
+            opt_bs_puts(Bs, Count0, [{L,Blk0}|Acc0])
+    end;
+opt_bs_puts([], Count, Acc) ->
+    {reverse(Acc),Count}.
+
+opt_bs_puts_merge([{L1,#b_blk{is=Is}=Blk0},{L2,#b_blk{is=AccIs}}=BAcc|Acc]) ->
+    case {AccIs,Is} of
+        {[#b_set{op=bs_put,
+                 args=[#b_literal{val=binary},
+                       #b_literal{},
+                       #b_literal{val=Bin0},
+                       #b_literal{val=all},
+                       #b_literal{val=1}]}],
+         [#b_set{op=bs_put,
+                 args=[#b_literal{val=binary},
+                       #b_literal{},
+                       #b_literal{val=Bin1},
+                       #b_literal{val=all},
+                       #b_literal{val=1}]}=I0]} ->
+            %% Coalesce the two segments to one.
+            Bin = <<Bin0/bitstring,Bin1/bitstring>>,
+            I = I0#b_set{args=bs_put_args(binary, Bin, all)},
+            Blk = Blk0#b_blk{is=[I]},
+            [{L2,Blk}|Acc];
+        {_,_} ->
+            [{L1,Blk0},BAcc|Acc]
+    end.
+
+opt_bs_put(L, I0, #b_blk{last=Br0}=Blk0, Count0, Acc) ->
+    case opt_bs_put(I0) of
+        [Bin] when is_bitstring(Bin) ->
+            Args = bs_put_args(binary, Bin, all),
+            I = I0#b_set{args=Args},
+            Blk = Blk0#b_blk{is=[I]},
+            {Count0,[{L,Blk}|Acc]};
+        [{int,Int,Size},Bin] when is_bitstring(Bin) ->
+            %% Construct a bs_put_integer instruction following
+            %% by a bs_put_binary instruction.
+            IntArgs = bs_put_args(integer, Int, Size),
+            BinArgs = bs_put_args(binary, Bin, all),
+            {BinL,BinVarNum} = {Count0,Count0+1},
+            Count = Count0 + 2,
+            BinVar = #b_var{name={'@ssa_bool',BinVarNum}},
+            BinI = I0#b_set{dst=BinVar,args=BinArgs},
+            BinBlk = Blk0#b_blk{is=[BinI],last=Br0#b_br{bool=BinVar}},
+            IntI = I0#b_set{args=IntArgs},
+            IntBlk = Blk0#b_blk{is=[IntI],last=Br0#b_br{succ=BinL}},
+            {Count,[{BinL,BinBlk},{L,IntBlk}|Acc]};
+        not_possible ->
+            not_possible
+    end.
+
+opt_bs_put(#b_set{args=[#b_literal{val=binary},_,#b_literal{val=Val},
+                        #b_literal{val=all},#b_literal{val=Unit}]})
+  when is_bitstring(Val) ->
+    if
+        bit_size(Val) rem Unit =:= 0 ->
+            [Val];
+        true ->
+            not_possible
+    end;
+opt_bs_put(#b_set{args=[#b_literal{val=Type},#b_literal{val=Flags},
+                        #b_literal{val=Val},#b_literal{val=Size},
+                        #b_literal{val=Unit}]}=I0) when is_integer(Size) ->
+    EffectiveSize = Size * Unit,
+    if
+        EffectiveSize > 0 ->
+            case {Type,opt_bs_put_endian(Flags)} of
+                {integer,big} when is_integer(Val) ->
+                    if
+                        EffectiveSize < 64 ->
+                            [<<Val:EffectiveSize>>];
+                        true ->
+                            opt_bs_put_split_int(Val, EffectiveSize)
+                    end;
+                {integer,little} when is_integer(Val), EffectiveSize < 128 ->
+                    %% To avoid an explosion in code size, we only try
+                    %% to optimize relatively small fields.
+                    <<Int:EffectiveSize>> = <<Val:EffectiveSize/little>>,
+                    Args = bs_put_args(Type, Int, EffectiveSize),
+                    I = I0#b_set{args=Args},
+                    opt_bs_put(I);
+                {binary,_} when is_bitstring(Val) ->
+                    <<Bitstring:EffectiveSize/bits,_/bits>> = Val,
+                    [Bitstring];
+                {float,Endian} ->
+                    try
+                        [opt_bs_put_float(Val, EffectiveSize, Endian)]
+                    catch error:_ ->
+                            not_possible
+                    end;
+                {_,_} ->
+                    not_possible
+            end;
+        true ->
+            not_possible
+    end;
+opt_bs_put(#b_set{}) -> not_possible.
+
+opt_bs_put_float(N, Sz, Endian) ->
+    case Endian of
+        big -> <<N:Sz/big-float-unit:1>>;
+        little -> <<N:Sz/little-float-unit:1>>
+    end.
+
+bs_put_args(Type, Val, Size) ->
+    [#b_literal{val=Type},
+     #b_literal{val=[unsigned,big]},
+     #b_literal{val=Val},
+     #b_literal{val=Size},
+     #b_literal{val=1}].
+
+opt_bs_put_endian([big=E|_]) -> E;
+opt_bs_put_endian([little=E|_]) -> E;
+opt_bs_put_endian([native=E|_]) -> E;
+opt_bs_put_endian([_|Fs]) -> opt_bs_put_endian(Fs).
+
+opt_bs_put_split_int(Int, Size) ->
+    Pos = opt_bs_put_split_int_1(Int, 0, Size - 1),
+    UpperSize = Size - Pos,
+    if
+        Pos =:= 0 ->
+            %% Value is 0 or -1 -- keep the original instruction.
+            not_possible;
+        UpperSize < 64 ->
+            %% No or few leading zeroes or ones.
+            [<<Int:Size>>];
+        true ->
+            %% There are 64 or more leading ones or zeroes in
+            %% the resulting binary. Split into two separate
+            %% segments to avoid an explosion in code size.
+            [{int,Int bsr Pos,UpperSize},<<Int:Pos>>]
+    end.
+
+opt_bs_put_split_int_1(_Int, L, R) when L > R ->
+    8 * ((L + 7) div 8);
+opt_bs_put_split_int_1(Int, L, R) ->
+    Mid = (L + R) div 2,
+    case Int bsr Mid of
+        Upper when Upper =:= 0; Upper =:= -1 ->
+            opt_bs_put_split_int_1(Int, L, Mid - 1);
+        _ ->
+            opt_bs_put_split_int_1(Int, Mid + 1, R)
+    end.
+
+%%%
+%%% Optimize expressions such as "tuple_size(Var) =:= 2".
+%%%
+%%% Consider this code:
+%%%
+%%% 0:
+%%%   .
+%%%   .
+%%%   .
+%%%   Size = bif:tuple_size Var
+%%%   BoolVar1 = succeeded Size
+%%%   br BoolVar1, label 4, label 3
+%%%
+%%% 4:
+%%%   BoolVar2 = bif:'=:=' Size, literal 2
+%%%   br BoolVar2, label 6, label 3
+%%%
+%%% 6: ...   %% OK
+%%%
+%%% 3: ...   %% Not a tuple of size 2
+%%%
+%%% The BEAM code will look this:
+%%%
+%%%   {bif,tuple_size,{f,3},[{x,0}],{x,0}}.
+%%%   {test,is_eq_exact,{f,3},[{x,0},{integer,2}]}.
+%%%
+%%% Better BEAM code will be produced if we transform the
+%%% code like this:
+%%%
+%%% 0:
+%%%   .
+%%%   .
+%%%   .
+%%%   br label 10
+%%%
+%%% 10:
+%%%   NewBoolVar = bif:is_tuple Var
+%%%   br NewBoolVar, label 11, label 3
+%%%
+%%% 11:
+%%%   Size = bif:tuple_size Var
+%%%   br label 4
+%%%
+%%% 4:
+%%%   BoolVar2 = bif:'=:=' Size, literal 2
+%%%   br BoolVar2, label 6, label 3
+%%%
+%%% (The key part of the transformation is the removal of
+%%% the 'succeeded' instruction to signal to the code generator
+%%% that the call to tuple_size/1 can't fail.)
+%%%
+%%% The BEAM code will look like:
+%%%
+%%%   {test,is_tuple,{f,3},[{x,0}]}.
+%%%   {test_arity,{f,3},[{x,0},2]}.
+%%%
+%%% Those two instructions will be combined into a single
+%%% is_tuple_of_arity instruction by the loader.
+%%%
+
+ssa_opt_tuple_size({#st{ssa=Linear0,cnt=Count0}=St, FuncDb}) ->
+    {Linear,Count} = opt_tup_size(Linear0, Count0, []),
+    {St#st{ssa=Linear,cnt=Count}, FuncDb}.
+
+opt_tup_size([{L,#b_blk{is=Is,last=Last}=Blk}|Bs], Count0, Acc0) ->
+    case {Is,Last} of
+        {[#b_set{op={bif,'=:='},dst=Bool,args=[#b_var{}=Tup,#b_literal{val=Arity}]}],
+         #b_br{bool=Bool}} when is_integer(Arity), Arity >= 0 ->
+            {Acc,Count} = opt_tup_size_1(Tup, L, Count0, Acc0),
+            opt_tup_size(Bs, Count, [{L,Blk}|Acc]);
+        {_,_} ->
+            opt_tup_size(Bs, Count0, [{L,Blk}|Acc0])
+    end;
+opt_tup_size([], Count, Acc) ->
+    {reverse(Acc),Count}.
+
+opt_tup_size_1(Size, EqL, Count0, [{L,Blk0}|Acc]) ->
+    case Blk0 of
+        #b_blk{is=Is0,last=#b_br{bool=Bool,succ=EqL,fail=Fail}} ->
+            case opt_tup_size_is(Is0, Bool, Size, []) of
+                none ->
+                    {[{L,Blk0}|Acc],Count0};
+                {PreIs,TupleSizeIs,Tuple} ->
+                    opt_tup_size_2(PreIs, TupleSizeIs, L, EqL,
+                                   Tuple, Fail, Count0, Acc)
+            end;
+        #b_blk{} ->
+            {[{L,Blk0}|Acc],Count0}
+    end;
+opt_tup_size_1(_, _, Count, Acc) ->
+    {Acc,Count}.
+
+opt_tup_size_2(PreIs, TupleSizeIs, PreL, EqL, Tuple, Fail, Count0, Acc) ->
+    IsTupleL = Count0,
+    TupleSizeL = Count0 + 1,
+    Bool = #b_var{name={'@ssa_bool',Count0+2}},
+    Count = Count0 + 3,
+
+    True = #b_literal{val=true},
+    PreBr = #b_br{bool=True,succ=IsTupleL,fail=IsTupleL},
+    PreBlk = #b_blk{is=PreIs,last=PreBr},
+
+    IsTupleIs = [#b_set{op={bif,is_tuple},dst=Bool,args=[Tuple]}],
+    IsTupleBr = #b_br{bool=Bool,succ=TupleSizeL,fail=Fail},
+    IsTupleBlk = #b_blk{is=IsTupleIs,last=IsTupleBr},
+
+    TupleSizeBr = #b_br{bool=True,succ=EqL,fail=EqL},
+    TupleSizeBlk = #b_blk{is=TupleSizeIs,last=TupleSizeBr},
+    {[{TupleSizeL,TupleSizeBlk},
+      {IsTupleL,IsTupleBlk},
+      {PreL,PreBlk}|Acc],Count}.
+
+opt_tup_size_is([#b_set{op={bif,tuple_size},dst=Size,args=[Tuple]}=I,
+                 #b_set{op=succeeded,dst=Bool,args=[Size]}],
+                Bool, Size, Acc) ->
+    {reverse(Acc),[I],Tuple};
+opt_tup_size_is([I|Is], Bool, Size, Acc) ->
+    opt_tup_size_is(Is, Bool, Size, [I|Acc]);
+opt_tup_size_is([], _, _, _Acc) -> none.
+
+%%%
+%%% Optimize #b_switch{} instructions.
+%%%
+%%% If the argument for a #b_switch{} comes from a phi node with all
+%%% literals, any values in the switch list which are not in the phi
+%%% node can be removed.
+%%%
+%%% If the values in the phi node and switch list are the same,
+%%% the failure label can't be reached and be eliminated.
+%%%
+%%% A #b_switch{} with only one value can be rewritten to
+%%% a #b_br{}. A switch that only verifies that the argument
+%%% is 'true' or 'false' can be rewritten to a is_boolean test.
+%%%
+
+ssa_opt_sw({#st{ssa=Linear0,cnt=Count0}=St, FuncDb}) ->
+    {Linear,Count} = opt_sw(Linear0, Count0, []),
+    {St#st{ssa=Linear,cnt=Count}, FuncDb}.
+
+opt_sw([{L,#b_blk{is=Is,last=#b_switch{}=Sw0}=Blk0}|Bs], Count0, Acc) ->
+    %% Ensure that no label in the switch list is the same
+    %% as the failure label.
+    #b_switch{fail=Fail,list=List0} = Sw0,
+    List = [{Val,Lbl} || {Val,Lbl} <- List0, Lbl =/= Fail],
+    Sw1 = beam_ssa:normalize(Sw0#b_switch{list=List}),
+    case Sw1 of
+        #b_switch{arg=Arg,fail=Fail,list=[{Lit,Lbl}]} ->
+            %% Rewrite a single value switch to a br.
+            Bool = #b_var{name={'@ssa_bool',Count0}},
+            Count = Count0 + 1,
+            IsEq = #b_set{op={bif,'=:='},dst=Bool,args=[Arg,Lit]},
+            Br = #b_br{bool=Bool,succ=Lbl,fail=Fail},
+            Blk = Blk0#b_blk{is=Is++[IsEq],last=Br},
+            opt_sw(Bs, Count, [{L,Blk}|Acc]);
+        #b_switch{arg=Arg,fail=Fail,
+                  list=[{#b_literal{val=B1},Lbl},{#b_literal{val=B2},Lbl}]}
+          when B1 =:= not B2 ->
+            %% Replace with is_boolean test.
+            Bool = #b_var{name={'@ssa_bool',Count0}},
+            Count = Count0 + 1,
+            IsBool = #b_set{op={bif,is_boolean},dst=Bool,args=[Arg]},
+            Br = #b_br{bool=Bool,succ=Lbl,fail=Fail},
+            Blk = Blk0#b_blk{is=Is++[IsBool],last=Br},
+            opt_sw(Bs, Count, [{L,Blk}|Acc]);
+        Sw0 ->
+            opt_sw(Bs, Count0, [{L,Blk0}|Acc]);
+        Sw ->
+            Blk = Blk0#b_blk{last=Sw},
+            opt_sw(Bs, Count0, [{L,Blk}|Acc])
+    end;
+opt_sw([{L,#b_blk{}=Blk}|Bs], Count, Acc) ->
+    opt_sw(Bs, Count, [{L,Blk}|Acc]);
+opt_sw([], Count, Acc) ->
+    {reverse(Acc),Count}.
+
+%%%
+%%% Merge blocks.
+%%%
+
+ssa_opt_merge_blocks({#st{ssa=Blocks}=St, FuncDb}) ->
+    Preds = beam_ssa:predecessors(Blocks),
+    Merged = merge_blocks_1(beam_ssa:rpo(Blocks), Preds, Blocks),
+    {St#st{ssa=Merged}, FuncDb}.
+
+merge_blocks_1([L|Ls], Preds0, Blocks0) ->
+    case Preds0 of
+        #{L:=[P]} ->
+            #{P:=Blk0,L:=Blk1} = Blocks0,
+            case is_merge_allowed(L, Blk0, Blk1) of
+                true ->
+                    #b_blk{is=Is0} = Blk0,
+                    #b_blk{is=Is1} = Blk1,
+                    verify_merge_is(Is1),
+                    Is = Is0 ++ Is1,
+                    Blk = Blk1#b_blk{is=Is},
+                    Blocks1 = maps:remove(L, Blocks0),
+                    Blocks2 = Blocks1#{P:=Blk},
+                    Successors = beam_ssa:successors(Blk),
+                    Blocks = beam_ssa:update_phi_labels(Successors, L, P, Blocks2),
+                    Preds = merge_update_preds(Successors, L, P, Preds0),
+                    merge_blocks_1(Ls, Preds, Blocks);
+                false ->
+                    merge_blocks_1(Ls, Preds0, Blocks0)
+            end;
+        #{} ->
+            merge_blocks_1(Ls, Preds0, Blocks0)
+    end;
+merge_blocks_1([], _Preds, Blocks) -> Blocks.
+
+merge_update_preds([L|Ls], From, To, Preds0) ->
+    Ps = [rename_label(P, From, To) || P <- map_get(L, Preds0)],
+    Preds = Preds0#{L:=Ps},
+    merge_update_preds(Ls, From, To, Preds);
+merge_update_preds([], _, _, Preds) -> Preds.
+
+rename_label(From, From, To) -> To;
+rename_label(Lbl, _, _) -> Lbl.
+
+verify_merge_is([#b_set{op=Op}|_]) ->
+    %% The merged block has only one predecessor, so it should not have any phi
+    %% nodes.
+    true = Op =/= phi;                          %Assertion.
+verify_merge_is(_) ->
+    ok.
+
+is_merge_allowed(_, #b_blk{}, #b_blk{is=[#b_set{op=peek_message}|_]}) ->
+    false;
+is_merge_allowed(L, #b_blk{last=#b_br{}}=Blk, #b_blk{}) ->
+    %% The predecessor block must have exactly one successor (L) for
+    %% the merge to be safe.
+    case beam_ssa:successors(Blk) of
+        [L] -> true;
+        [_|_] -> false
+    end;
+is_merge_allowed(_, #b_blk{last=#b_switch{}}, #b_blk{}) ->
+    false.
+
+%%%
+%%% When a tuple is matched, the pattern matching compiler generates a
+%%% get_tuple_element instruction for every tuple element that will
+%%% ever be used in the rest of the function. That often forces the
+%%% extracted tuple elements to be stored in Y registers until it's
+%%% time to use them. It could also mean that there could be execution
+%%% paths that will never use the extracted elements.
+%%%
+%%% This optimization will sink get_tuple_element instructions, that
+%%% is, move them forward in the execution stream to the last possible
+%%% block there they will still dominate all uses. That may reduce the
+%%% size of stack frames, reduce register shuffling, and avoid
+%%% extracting tuple elements on execution paths that never use the
+%%% extracted values.
+%%%
+
+ssa_opt_sink({#st{ssa=Blocks0}=St, FuncDb}) ->
+    Linear = beam_ssa:linearize(Blocks0),
+
+    %% Create a map with all variables that define get_tuple_element
+    %% instructions. The variable name map to the block it is defined in.
+    case def_blocks(Linear) of
+        [] ->
+            %% No get_tuple_element instructions, so there is nothing to do.
+            {St, FuncDb};
+        [_|_]=Defs0 ->
+            Defs = maps:from_list(Defs0),
+            {do_ssa_opt_sink(Linear, Defs, St), FuncDb}
+    end.
+
+do_ssa_opt_sink(Linear, Defs, #st{ssa=Blocks0}=St) ->
+    %% Now find all the blocks that use variables defined by get_tuple_element
+    %% instructions.
+    Used = used_blocks(Linear, Defs, []),
+
+    %% Calculate dominators.
+    {Dom,Numbering} = beam_ssa:dominators(Blocks0),
+
+    %% It is not safe to move get_tuple_element instructions to blocks
+    %% that begin with certain instructions. It is also unsafe to move
+    %% the instructions into any part of a receive. To avoid such
+    %% unsafe moves, pretend that the unsuitable blocks are not
+    %% dominators.
+    Unsuitable = unsuitable(Linear, Blocks0),
+
+    %% Calculate new positions for get_tuple_element instructions. The new
+    %% position is a block that dominates all uses of the variable.
+    DefLoc = new_def_locations(Used, Defs, Dom, Numbering, Unsuitable),
+
+    %% Now move all suitable get_tuple_element instructions to their
+    %% new blocks.
+    Blocks = foldl(fun({V,To}, A) ->
+                           From = map_get(V, Defs),
+                           move_defs(V, From, To, A)
+                   end, Blocks0, DefLoc),
+    St#st{ssa=Blocks}.
+
+def_blocks([{L,#b_blk{is=Is}}|Bs]) ->
+    def_blocks_is(Is, L, def_blocks(Bs));
+def_blocks([]) -> [].
+
+def_blocks_is([#b_set{op=get_tuple_element,dst=Dst}|Is], L, Acc) ->
+    def_blocks_is(Is, L, [{Dst,L}|Acc]);
+def_blocks_is([_|Is], L, Acc) ->
+    def_blocks_is(Is, L, Acc);
+def_blocks_is([], _, Acc) -> Acc.
+
+used_blocks([{L,Blk}|Bs], Def, Acc0) ->
+    Used = beam_ssa:used(Blk),
+    Acc = [{V,L} || V <- Used, maps:is_key(V, Def)] ++ Acc0,
+    used_blocks(Bs, Def, Acc);
+used_blocks([], _Def, Acc) ->
+    rel2fam(Acc).
+
+%% unsuitable(Linear, Blocks) -> Unsuitable.
+%%  Return an ordset of block labels for the blocks that are not
+%%  suitable for sinking of get_tuple_element instructions.
+
+unsuitable(Linear, Blocks) ->
+    Predecessors = beam_ssa:predecessors(Blocks),
+    Unsuitable0 = unsuitable_1(Linear),
+    Unsuitable1 = unsuitable_recv(Linear, Blocks, Predecessors),
+    gb_sets:from_list(Unsuitable0 ++ Unsuitable1).
+
+unsuitable_1([{L,#b_blk{is=[#b_set{op=Op}|_]}}|Bs]) ->
+    Unsuitable = case Op of
+                     bs_extract -> true;
+                     bs_put -> true;
+                     {float,_} -> true;
+                     landingpad -> true;
+                     peek_message -> true;
+                     wait_timeout -> true;
+                     _ -> false
+                 end,
+    case Unsuitable of
+        true ->
+            [L|unsuitable_1(Bs)];
+        false ->
+            unsuitable_1(Bs)
+    end;
+unsuitable_1([{_,#b_blk{}}|Bs]) ->
+    unsuitable_1(Bs);
+unsuitable_1([]) -> [].
+
+unsuitable_recv([{L,#b_blk{is=[#b_set{op=Op}|_]}}|Bs], Blocks, Predecessors) ->
+    Ls = case Op of
+             remove_message ->
+                 unsuitable_loop(L, Blocks, Predecessors);
+             recv_next ->
+                 unsuitable_loop(L, Blocks, Predecessors);
+             _ ->
+                 []
+         end,
+    Ls ++ unsuitable_recv(Bs, Blocks, Predecessors);
+unsuitable_recv([_|Bs], Blocks, Predecessors) ->
+    unsuitable_recv(Bs, Blocks, Predecessors);
+unsuitable_recv([], _, _) -> [].
+
+unsuitable_loop(L, Blocks, Predecessors) ->
+    unsuitable_loop(L, Blocks, Predecessors, []).
+
+unsuitable_loop(L, Blocks, Predecessors, Acc) ->
+    Ps = map_get(L, Predecessors),
+    unsuitable_loop_1(Ps, Blocks, Predecessors, Acc).
+
+unsuitable_loop_1([P|Ps], Blocks, Predecessors, Acc0) ->
+    case map_get(P, Blocks) of
+        #b_blk{is=[#b_set{op=peek_message}|_]} ->
+            unsuitable_loop_1(Ps, Blocks, Predecessors, Acc0);
+        #b_blk{} ->
+            case ordsets:is_element(P, Acc0) of
+                false ->
+                    Acc1 = ordsets:add_element(P, Acc0),
+                    Acc = unsuitable_loop(P, Blocks, Predecessors, Acc1),
+                    unsuitable_loop_1(Ps, Blocks, Predecessors, Acc);
+                true ->
+                    unsuitable_loop_1(Ps, Blocks, Predecessors, Acc0)
+            end
+    end;
+unsuitable_loop_1([], _, _, Acc) -> Acc.
+
+%% new_def_locations([{Variable,[UsedInBlock]}|Vs], Defs,
+%%                   Dominators, Numbering, Unsuitable) ->
+%%  [{Variable,NewDefinitionBlock}]
+%%
+%%  Calculate new locations for get_tuple_element instructions. For
+%%  each variable, the new location is a block that dominates all uses
+%%  of the variable and as near to the uses of as possible.
+
+new_def_locations([{V,UsedIn}|Vs], Defs, Dom, Numbering, Unsuitable) ->
+    DefIn = map_get(V, Defs),
+    Common = common_dominator(UsedIn, Dom, Numbering, Unsuitable),
+    case member(Common, map_get(DefIn, Dom)) of
+        true ->
+            %% The common dominator is either DefIn or an
+            %% ancestor of DefIn.
+            new_def_locations(Vs, Defs, Dom, Numbering, Unsuitable);
+        false ->
+            %% We have found a suitable descendant of DefIn,
+            %% to which the get_tuple_element instruction can
+            %% be sunk.
+            [{V,Common}|new_def_locations(Vs, Defs, Dom, Numbering, Unsuitable)]
+    end;
+new_def_locations([], _, _, _, _) -> [].
+
+common_dominator(Ls0, Dom, Numbering, Unsuitable) ->
+    [Common|_] = beam_ssa:common_dominators(Ls0, Dom, Numbering),
+    case gb_sets:is_member(Common, Unsuitable) of
+        true ->
+            %% It is not allowed to place the instruction here. Try
+            %% to find another suitable dominating block by going up
+            %% one step in the dominator tree.
+            [Common,OneUp|_] = map_get(Common, Dom),
+            common_dominator([OneUp], Dom, Numbering, Unsuitable);
+        false ->
+            Common
+    end.
+
+%% Move get_tuple_element instructions to their new locations.
+
+move_defs(V, From, To, Blocks) ->
+    #{From:=FromBlk0,To:=ToBlk0} = Blocks,
+    {Def,FromBlk} = remove_def(V, FromBlk0),
+    try insert_def(V, Def, ToBlk0) of
+        ToBlk ->
+            %%io:format("~p: ~p => ~p\n", [V,From,To]),
+            Blocks#{From:=FromBlk,To:=ToBlk}
+    catch
+        throw:not_possible ->
+            Blocks
+    end.
+
+remove_def(V, #b_blk{is=Is0}=Blk) ->
+    {Def,Is} = remove_def_is(Is0, V, []),
+    {Def,Blk#b_blk{is=Is}}.
+
+remove_def_is([#b_set{dst=Dst}=Def|Is], Dst, Acc) ->
+    {Def,reverse(Acc, Is)};
+remove_def_is([I|Is], Dst, Acc) ->
+    remove_def_is(Is, Dst, [I|Acc]).
+
+insert_def(V, Def, #b_blk{is=Is0}=Blk) ->
+    Is = insert_def_is(Is0, V, Def),
+    Blk#b_blk{is=Is}.
+
+insert_def_is([#b_set{op=phi}=I|Is], V, Def) ->
+    case member(V, beam_ssa:used(I)) of
+        true ->
+            throw(not_possible);
+        false ->
+            [I|insert_def_is(Is, V, Def)]
+    end;
+insert_def_is([#b_set{op=Op}=I|Is]=Is0, V, Def) ->
+    Action0 = case Op of
+                  call -> beyond;
+                  'catch_end' -> beyond;
+                  timeout -> beyond;
+                  _ -> here
+              end,
+    Action = case Is of
+                 [#b_set{op=succeeded}|_] -> here;
+                 _ -> Action0
+             end,
+    case Action of
+        beyond ->
+            case member(V, beam_ssa:used(I)) of
+                true ->
+                    %% The variable is used by this instruction. We must
+                    %% place the definition before this instruction.
+                    [Def|Is0];
+                false ->
+                    %% Place it beyond the current instruction.
+                    [I|insert_def_is(Is, V, Def)]
+            end;
+        here ->
+            [Def|Is0]
+    end;
+insert_def_is([], _V, Def) ->
+    [Def].
+
+%%%
+%%% Order consecutive get_tuple_element instructions in ascending
+%%% position order. This will give the loader more opportunities
+%%% for combining get_tuple_element instructions.
+%%%
+
+ssa_opt_get_tuple_element({#st{ssa=Blocks0}=St, FuncDb}) ->
+    Blocks = opt_get_tuple_element(maps:to_list(Blocks0), Blocks0),
+    {St#st{ssa=Blocks}, FuncDb}.
+
+opt_get_tuple_element([{L,#b_blk{is=Is0}=Blk0}|Bs], Blocks) ->
+    case opt_get_tuple_element_is(Is0, false, []) of
+        {yes,Is} ->
+            Blk = Blk0#b_blk{is=Is},
+            opt_get_tuple_element(Bs, Blocks#{L:=Blk});
+        no ->
+            opt_get_tuple_element(Bs, Blocks)
+    end;
+opt_get_tuple_element([], Blocks) -> Blocks.
+
+opt_get_tuple_element_is([#b_set{op=get_tuple_element,
+                                 args=[#b_var{}=Src,_]}=I0|Is0],
+                         _AnyChange, Acc) ->
+    {GetIs0,Is} = collect_get_tuple_element(Is0, Src, [I0]),
+    GetIs1 = sort([{Pos,I} || #b_set{args=[_,Pos]}=I <- GetIs0]),
+    GetIs = [I || {_,I} <- GetIs1],
+    opt_get_tuple_element_is(Is, true, reverse(GetIs, Acc));
+opt_get_tuple_element_is([I|Is], AnyChange, Acc) ->
+    opt_get_tuple_element_is(Is, AnyChange, [I|Acc]);
+opt_get_tuple_element_is([], AnyChange, Acc) ->
+    case AnyChange of
+        true -> {yes,reverse(Acc)};
+        false -> no
+    end.
+
+collect_get_tuple_element([#b_set{op=get_tuple_element,
+                                  args=[Src,_]}=I|Is], Src, Acc) ->
+    collect_get_tuple_element(Is, Src, [I|Acc]);
+collect_get_tuple_element(Is, _Src, Acc) ->
+    {Acc,Is}.
+
+%%%
+%%% Common utilities.
+%%%
+
+gcd(A, B) ->
+    case A rem B of
+        0 -> B;
+        X -> gcd(B, X)
+    end.
+
+rel2fam(S0) ->
+    S1 = sofs:relation(S0),
+    S = sofs:rel2fam(S1),
+    sofs:to_external(S).
+
+sub(I, Sub) ->
+    beam_ssa:normalize(sub_1(I, Sub)).
+
+sub_1(#b_set{op=phi,args=Args}=I, Sub) ->
+    I#b_set{args=[{sub_arg(A, Sub),P} || {A,P} <- Args]};
+sub_1(#b_set{args=Args}=I, Sub) ->
+    I#b_set{args=[sub_arg(A, Sub) || A <- Args]};
+sub_1(#b_br{bool=#b_var{}=Old}=Br, Sub) ->
+    New = sub_arg(Old, Sub),
+    Br#b_br{bool=New};
+sub_1(#b_switch{arg=#b_var{}=Old}=Sw, Sub) ->
+    New = sub_arg(Old, Sub),
+    Sw#b_switch{arg=New};
+sub_1(#b_ret{arg=#b_var{}=Old}=Ret, Sub) ->
+    New = sub_arg(Old, Sub),
+    Ret#b_ret{arg=New};
+sub_1(Last, _) -> Last.
+
+sub_arg(#b_remote{mod=Mod,name=Name}=Rem, Sub) ->
+    Rem#b_remote{mod=sub_arg(Mod, Sub),name=sub_arg(Name, Sub)};
+sub_arg(Old, Sub) ->
+    case Sub of
+        #{Old:=New} -> New;
+        #{} -> Old
+    end.
+
+new_var(#b_var{name={Base,N}}, Count) ->
+    true = is_integer(N),                       %Assertion.
+    {#b_var{name={Base,Count}},Count+1};
+new_var(#b_var{name=Base}, Count) ->
+    {#b_var{name={Base,Count}},Count+1}.
diff --git a/lib/compiler/src/beam_ssa_opt.hrl b/lib/compiler/src/beam_ssa_opt.hrl
new file mode 100644
index 0000000000..37711a6f48
--- /dev/null
+++ b/lib/compiler/src/beam_ssa_opt.hrl
@@ -0,0 +1,53 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2019. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+-include("beam_ssa.hrl").
+
+-record(func_info,
+        {%% Local calls going in/out of this function.
+         in = ordsets:new() :: ordsets:ordset(func_id()),
+         out = ordsets:new() :: ordsets:ordset(func_id()),
+
+         %% Whether the function is exported or not; some optimizations may
+         %% need to be suppressed if it is.
+         exported = true :: boolean(),
+
+         %% The inferred types of each argument (as opposed to parameter),
+         %% indexed by call site.
+         %%
+         %% This is more effective than the naive approach of joining into a
+         %% "parameter_type" as we go as it lets us narrow parameter types
+         %% without having to visit all callers on each pass, which helps a lot
+         %% when dealing with co-recursive functions.
+         arg_types = [] :: list(arg_type_map()),
+
+         %% The inferred return type of this function, this is either [type()]
+         %% or [] to note absence.
+         ret_type = [] :: list()}).
+
+-type arg_key() :: {CallerId :: func_id(),
+                    CallDst :: beam_ssa:b_var()}.
+-type arg_type_map() :: #{ arg_key() => term() }.
+
+%% Per-function metadata used by various optimization passes to perform
+%% module-level optimization. If a function is absent it means that
+%% module-level optimization has been turned off for said function.
+-type func_id() :: beam_ssa:b_local().
+-type func_info_db() :: #{ func_id() => #func_info{} }.
diff --git a/lib/compiler/src/beam_ssa_pp.erl b/lib/compiler/src/beam_ssa_pp.erl
new file mode 100644
index 0000000000..34ac08b32e
--- /dev/null
+++ b/lib/compiler/src/beam_ssa_pp.erl
@@ -0,0 +1,238 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2018. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+-module(beam_ssa_pp).
+
+-export([format_function/1,format_instr/1,format_var/1]).
+
+-include("beam_ssa.hrl").
+
+-spec format_function(beam_ssa:b_function()) -> iolist().
+
+format_function(#b_function{anno=Anno0,args=Args,
+                            bs=Blocks,cnt=Counter}) ->
+    #{func_info:={M,F,_}} = Anno0,
+    Anno = maps:without([func_info,location,live_intervals,registers], Anno0),
+    FuncAnno = case Anno0 of
+                   #{live_intervals:=Intervals} ->
+                       Anno0#{live_intervals:=maps:from_list(Intervals)};
+                   #{} ->
+                       Anno0
+               end,
+     ReachableBlocks = beam_ssa:rpo(Blocks),
+     All = maps:keys(Blocks),
+     Unreachable = ordsets:subtract(ordsets:from_list(All),
+                                    ordsets:from_list(ReachableBlocks)),
+    [case Anno0 of
+         #{location:={Filename,Line}} ->
+             io_lib:format("%% ~ts:~p\n", [Filename,Line]);
+         #{} ->
+             []
+     end,
+     io_lib:format("%% Counter = ~p\n", [Counter]),
+     [format_anno(Key, Value) ||
+         {Key,Value} <- lists:sort(maps:to_list(Anno))],
+     io_lib:format("function ~p:~p(~ts) {\n", [M,F,format_args(Args, FuncAnno)]),
+     [format_live_interval(Var, FuncAnno) || Var <- Args],
+     format_blocks(ReachableBlocks, Blocks, FuncAnno),
+     case Unreachable of
+         [] ->
+             [];
+         [_|_] ->
+             ["\n%% Unreachable blocks\n\n",
+              format_blocks(Unreachable, Blocks, FuncAnno)]
+     end,
+
+     "}\n"].
+
+
+-spec format_instr(beam_ssa:b_set()) -> iolist().
+
+format_instr(#b_set{}=I) ->
+    Cs = lists:flatten(format_instr(I#b_set{anno=#{}}, #{}, true)),
+    string:trim(Cs, leading);
+format_instr(I0) ->
+    I = setelement(2, I0, #{}),
+    Cs = lists:flatten(format_terminator(I, #{})),
+    string:trim(Cs, both).
+
+-spec format_var(beam_ssa:b_var()) -> iolist().
+
+format_var(V) ->
+    Cs = lists:flatten(format_var(V, #{})),
+    string:trim(Cs, leading).
+
+%%%
+%%% Local functions.
+%%%
+
+format_anno(Key, Map) when is_map(Map) ->
+    Sorted = lists:sort(maps:to_list(Map)),
+    [io_lib:format("%% ~s:\n", [Key]),
+     [io_lib:format("%%    ~w => ~w\n", [K,V]) || {K,V} <- Sorted]];
+format_anno(Key, Value) ->
+    io_lib:format("%% ~s: ~p\n", [Key,Value]).
+
+format_blocks(Ls, Blocks, Anno) ->
+    PP = [format_block(L, Blocks, Anno) || L <- Ls],
+    lists:join($\n, PP).
+
+format_block(L, Blocks, FuncAnno) ->
+    #b_blk{anno=Anno,is=Is,last=Last} = maps:get(L, Blocks),
+    [case map_size(Anno) of
+         0 -> [];
+         _ -> io_lib:format("%% ~p\n", [Anno])
+     end,
+     io_lib:format("~p:", [L]),
+     format_instrs(Is, FuncAnno, true),
+     $\n,
+     format_terminator(Last, FuncAnno)].
+
+format_instrs([I|Is], FuncAnno, First) ->
+    [$\n,
+     format_instr(I, FuncAnno, First),
+     format_instrs(Is, FuncAnno, false)];
+format_instrs([], _FuncAnno, _First) ->
+    [].
+
+format_instr(#b_set{anno=Anno,op=Op,dst=Dst,args=Args},
+             FuncAnno, First) ->
+    AnnoStr = format_anno(Anno),
+    LiveIntervalStr = format_live_interval(Dst, FuncAnno),
+    [if
+         First ->
+             [];
+         AnnoStr =/= []; LiveIntervalStr =/= [] ->
+             $\n;
+         true ->
+             []
+     end,
+     AnnoStr,
+     LiveIntervalStr,
+     io_lib:format("  ~s~ts = ~ts", [format_i_number(Anno),
+                                     format_var(Dst, FuncAnno),
+                                     format_op(Op)]),
+     case Args of
+         [] ->
+             [];
+         [_|_] ->
+             io_lib:format(" ~ts", [format_args(Args, FuncAnno)])
+     end].
+
+format_i_number(#{n:=N}) ->
+    io_lib:format("[~p] ", [N]);
+format_i_number(#{}) -> [].
+
+format_terminator(#b_br{anno=A,bool=#b_literal{val=true},succ=Lbl}, _) ->
+    io_lib:format("  ~sbr label ~p\n", [format_i_number(A),Lbl]);
+format_terminator(#b_br{anno=A,bool=#b_literal{val=false},fail=Lbl}, _) ->
+    io_lib:format("  ~sbr label ~p\n", [format_i_number(A),Lbl]);
+format_terminator(#b_br{anno=A,bool=Bool,succ=Succ,fail=Fail}, FuncAnno) ->
+    io_lib:format("  ~sbr ~ts, label ~p, label ~p\n",
+                  [format_i_number(A),format_arg(Bool, FuncAnno),Succ,Fail]);
+format_terminator(#b_switch{anno=A,arg=Arg,fail=Fail,list=List}, FuncAnno) ->
+    io_lib:format("  ~sswitch ~ts, label ~p, ~ts\n",
+                  [format_i_number(A),format_arg(Arg, FuncAnno),Fail,
+                   format_list(List,FuncAnno)]);
+format_terminator(#b_ret{anno=A,arg=Arg}, FuncAnno) ->
+    io_lib:format("  ~sret ~ts\n", [format_i_number(A),format_arg(Arg, FuncAnno)]).
+
+format_op({Prefix,Name}) ->
+    io_lib:format("~p:~p", [Prefix,Name]);
+format_op(Name) ->
+    io_lib:format("~p", [Name]).
+
+format_register(#b_var{}=V, #{registers:=Regs}) ->
+    {Tag,N} = maps:get(V, Regs),
+    io_lib:format("~p~p", [Tag,N]);
+format_register(_, #{}) -> "".
+
+format_var(Var, FuncAnno) ->
+    VarString = format_var_1(Var),
+    case format_register(Var, FuncAnno) of
+        [] -> VarString;
+        [_|_]=Reg -> [Reg,$/,VarString]
+    end.
+
+format_var_1(#b_var{name={Name,Uniq}}) ->
+    if
+        is_atom(Name) ->
+            io_lib:format("~ts:~p", [Name,Uniq]);
+        is_integer(Name) ->
+            io_lib:format("_~p:~p", [Name,Uniq])
+    end;
+format_var_1(#b_var{name=Name}) when is_atom(Name) ->
+    atom_to_list(Name);
+format_var_1(#b_var{name=Name}) when is_integer(Name) ->
+    "_"++integer_to_list(Name).
+
+format_args(Args, FuncAnno) ->
+    Ss = [format_arg(Arg, FuncAnno) || Arg <- Args],
+    lists:join(", ", Ss).
+
+format_arg(#b_var{}=Arg, FuncAnno) ->
+    format_var(Arg, FuncAnno);
+format_arg(#b_literal{val=Val}, _FuncAnno) ->
+    io_lib:format("literal ~p", [Val]);
+format_arg(#b_remote{mod=Mod,name=Name,arity=Arity}, FuncAnno) ->
+    io_lib:format("remote (~ts):(~ts)/~p",
+                  [format_arg(Mod, FuncAnno),format_arg(Name, FuncAnno),Arity]);
+format_arg(#b_local{name=Name,arity=Arity}, FuncAnno) ->
+    io_lib:format("local ~ts/~p", [format_arg(Name, FuncAnno),Arity]);
+format_arg({Value,Label}, FuncAnno) when is_integer(Label) ->
+    io_lib:format("{ ~ts, ~p }", [format_arg(Value, FuncAnno),Label]);
+format_arg(Other, _) ->
+    io_lib:format("*** ~p ***", [Other]).
+
+format_list(List, FuncAnno) ->
+    Ss = [io_lib:format("{ ~ts, ~ts }", [format_arg(Val, FuncAnno),format_label(L)]) ||
+             {Val,L} <- List],
+    io_lib:format("[ ~ts ]", [lists:join(", ", Ss)]).
+
+format_label(L) ->
+    ["label ",integer_to_list(L)].
+
+format_anno(#{n:=_}=Anno) ->
+    format_anno(maps:remove(n, Anno));
+format_anno(#{location:={File,Line}}=Anno0) ->
+    Anno = maps:remove(location, Anno0),
+    [io_lib:format("  %% ~ts:~p\n", [File,Line])|format_anno_1(Anno)];
+format_anno(Anno) ->
+    format_anno_1(Anno).
+
+format_anno_1(Anno) ->
+    case map_size(Anno) of
+        0 ->
+            [];
+        _ ->
+            [io_lib:format("  %% Anno: ~p\n", [Anno])]
+    end.
+
+format_live_interval(#b_var{}=Dst, #{live_intervals:=Intervals}) ->
+    case Intervals of
+        #{Dst:=Rs0} ->
+            Rs1 = [io_lib:format("~p..~p", [Start,End]) ||
+                      {Start,End} <- Rs0],
+            Rs = lists:join(" ", Rs1),
+            io_lib:format("  %% ~ts: ~s\n", [format_var_1(Dst),Rs]);
+        #{} ->
+            []
+    end;
+format_live_interval(_, _) -> [].
+
diff --git a/lib/compiler/src/beam_ssa_pre_codegen.erl b/lib/compiler/src/beam_ssa_pre_codegen.erl
new file mode 100644
index 0000000000..bad43a9c4e
--- /dev/null
+++ b/lib/compiler/src/beam_ssa_pre_codegen.erl
@@ -0,0 +1,2831 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2018. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+%% Purpose: Prepare for code generation, including register allocation.
+%%
+%% The output of this compiler pass is still in the SSA format, but
+%% it has been annotated and transformed to help the code generator.
+%%
+%% * Some instructions are translated to other instructions closer to
+%% the BEAM instructions. For example, the binary matching
+%% instructions are transformed from the optimization-friendly
+%% internal format to instruction more similar to the actual BEAM
+%% instructions.
+%%
+%% * Blocks that will need an instruction for allocating a stack frame
+%% are annotated with a {frame_size,Size} annotation.
+%%
+%% * 'copy' instructions are added for all variables that need
+%% to be saved to the stack frame. Additional 'copy' instructions
+%% can be added as an optimization to reuse y registers (see
+%% the copy_retval sub pass).
+%%
+%% * Each function is annotated with a {register,RegisterMap}
+%% annotation that maps each variable to a BEAM register. The linear
+%% scan algorithm is used to allocate registers.
+%%
+%% There are four kind of registers. x, y, fr (floating point register),
+%% and z. A variable will be allocated to a z register if it is only
+%% used by the instruction following the instruction that defines the
+%% the variable. The code generator will typically combine those
+%% instructions to a test instruction. z registers are also used for
+%% some instructions that don't have a return value.
+%%
+%% References:
+%%
+%% [1] H. Mössenböck and M. Pfeiffer. Linear scan register allocation
+%% in the context of SSA form and register constraints. In Proceedings
+%% of the International Conference on Compiler Construction, pages
+%% 229–246. LNCS 2304, Springer-Verlag, 2002.
+%%
+%% [2] C. Wimmer and H. Mössenböck. Optimized interval splitting in a
+%% linear scan register allocator. In Proceedings of the ACM/USENIX
+%% International Conference on Virtual Execution Environments, pages
+%% 132–141. ACM Press, 2005.
+%%
+%% [3] C. Wimmer and M. Franz. Linear Scan Register Allocation on SSA
+%% Form. In Proceedings of the International Symposium on Code
+%% Generation and Optimization, pages 170-179. ACM Press, 2010.
+%%
+
+-module(beam_ssa_pre_codegen).
+
+-export([module/2]).
+
+-include("beam_ssa.hrl").
+
+-import(lists, [all/2,any/2,append/1,duplicate/2,
+                foldl/3,last/1,map/2,member/2,partition/2,
+                reverse/1,reverse/2,sort/1,splitwith/2,zip/2]).
+
+-spec module(beam_ssa:b_module(), [compile:option()]) ->
+                    {'ok',beam_ssa:b_module()}.
+
+module(#b_module{body=Fs0}=Module, Opts) ->
+    UseBSM3 = not proplists:get_bool(no_bsm3, Opts),
+    Ps = passes(Opts),
+    Fs = functions(Fs0, Ps, UseBSM3),
+    {ok,Module#b_module{body=Fs}}.
+
+functions([F|Fs], Ps, UseBSM3) ->
+    [function(F, Ps, UseBSM3)|functions(Fs, Ps, UseBSM3)];
+functions([], _Ps, _UseBSM3) -> [].
+
+-type b_var() :: beam_ssa:b_var().
+-type var_name() :: beam_ssa:var_name().
+-type instr_number() :: pos_integer().
+-type range() :: {instr_number(),instr_number()}.
+-type reg_num() :: beam_asm:reg_num().
+-type xreg() :: {'x',reg_num()}.
+-type yreg() :: {'y',reg_num()}.
+-type ypool() :: {'y',beam_ssa:label()}.
+-type reservation() :: 'fr' | {'prefer',xreg()} | 'x' | {'x',xreg()} |
+                       ypool() | {yreg(),ypool()} | 'z'.
+-type ssa_register() :: beam_ssa_codegen:ssa_register().
+
+-define(TC(Body), tc(fun() -> Body end, ?FILE, ?LINE)).
+-record(st, {ssa :: beam_ssa:block_map(),
+             args :: [b_var()],
+             cnt :: beam_ssa:label(),
+             use_bsm3 :: boolean(),
+             frames=[] :: [beam_ssa:label()],
+             intervals=[] :: [{b_var(),[range()]}],
+             res=[] :: [{b_var(),reservation()}] | #{b_var():=reservation()},
+             regs=#{} :: #{b_var():=ssa_register()},
+             extra_annos=[] :: [{atom(),term()}]
+            }).
+-define(PASS(N), {N,fun N/1}).
+
+passes(Opts) ->
+    AddPrecgAnnos = proplists:get_bool(dprecg, Opts),
+    FixTuples = proplists:get_bool(no_put_tuple2, Opts),
+    Ps = [?PASS(assert_no_critical_edges),
+
+          %% Preliminaries.
+          ?PASS(fix_bs),
+          ?PASS(sanitize),
+          case FixTuples of
+              false -> ignore;
+              true -> ?PASS(fix_tuples)
+          end,
+          ?PASS(use_set_tuple_element),
+          ?PASS(place_frames),
+          ?PASS(fix_receives),
+
+          %% Find and reserve Y registers.
+          ?PASS(find_yregs),
+          ?PASS(reserve_yregs),
+
+          %% Handle legacy binary match instruction that don't
+          %% accept a Y register as destination.
+          ?PASS(legacy_bs),
+
+          %% Improve reuse of Y registers to potentially
+          %% reduce the size of the stack frame.
+          ?PASS(copy_retval),
+          ?PASS(opt_get_list),
+
+          %% Calculate live intervals.
+          ?PASS(number_instructions),
+          ?PASS(live_intervals),
+          ?PASS(reserve_regs),
+
+          %% If needed for a .precg file, save the live intervals
+          %% so they can be included in an annotation.
+          case AddPrecgAnnos of
+              false -> ignore;
+              true -> ?PASS(save_live_intervals)
+          end,
+
+          %% Allocate registers.
+          ?PASS(linear_scan),
+          ?PASS(frame_size),
+          ?PASS(turn_yregs)],
+    [P || P <- Ps, P =/= ignore].
+
+function(#b_function{anno=Anno,args=Args,bs=Blocks0,cnt=Count0}=F0,
+         Ps, UseBSM3) ->
+    try
+        St0 = #st{ssa=Blocks0,args=Args,use_bsm3=UseBSM3,cnt=Count0},
+        St = compile:run_sub_passes(Ps, St0),
+        #st{ssa=Blocks,cnt=Count,regs=Regs,extra_annos=ExtraAnnos} = St,
+        F1 = add_extra_annos(F0, ExtraAnnos),
+        F = beam_ssa:add_anno(registers, Regs, F1),
+        F#b_function{bs=Blocks,cnt=Count}
+    catch
+        Class:Error:Stack ->
+            #{func_info:={_,Name,Arity}} = Anno,
+            io:fwrite("Function: ~w/~w\n", [Name,Arity]),
+            erlang:raise(Class, Error, Stack)
+    end.
+
+save_live_intervals(#st{intervals=Intervals}=St) ->
+    St#st{extra_annos=[{live_intervals,Intervals}]}.
+
+%% Add extra annotations when a .precg listing file is being produced.
+add_extra_annos(F, Annos) ->
+    foldl(fun({Name,Value}, Acc) ->
+                  beam_ssa:add_anno(Name, Value, Acc)
+          end, F, Annos).
+
+%% assert_no_critical_edges(St0) -> St.
+%%  The code generator will not work if there are critial edges.
+%%  Abort if any critical edges are found.
+
+assert_no_critical_edges(#st{ssa=Blocks}=St) ->
+    F = fun assert_no_ces/3,
+    beam_ssa:fold_rpo(F, Blocks, Blocks),
+    St.
+
+assert_no_ces(_, #b_blk{is=[#b_set{op=phi,args=[_,_]=Phis}|_]}, Blocks) ->
+    %% This block has multiple predecessors. Make sure that none
+    %% of the precessors have more than one successor.
+    true = all(fun({_,P}) ->
+                       length(beam_ssa:successors(P, Blocks)) =:= 1
+               end, Phis),                      %Assertion.
+    Blocks;
+assert_no_ces(_, _, Blocks) -> Blocks.
+
+%% fix_bs(St0) -> St.
+%%  Fix up the binary matching instructions:
+%%
+%%    * Insert bs_save and bs_restore instructions where needed.
+%%
+%%    * Combine bs_match and bs_extract instructions to bs_get
+%%      instructions.
+
+fix_bs(#st{ssa=Blocks,cnt=Count0,use_bsm3=UseBSM3}=St) ->
+    F = fun(#b_set{op=bs_start_match,dst=Dst}, A) ->
+                %% Mark the root of the match context list.
+                [{Dst,{context,Dst}}|A];
+           (#b_set{op=bs_match,dst=Dst,args=[_,ParentCtx|_]}, A) ->
+                %% Link this match context the previous match context.
+                [{Dst,ParentCtx}|A];
+           (_, A) ->
+                A
+        end,
+    case beam_ssa:fold_instrs_rpo(F, [0], [],Blocks) of
+        [] ->
+            %% No binary matching in this function.
+            St;
+        [_|_]=M ->
+            CtxChain = maps:from_list(M),
+            Linear0 = beam_ssa:linearize(Blocks),
+
+            %% Insert position instructions where needed.
+            {Linear1,Count} = case UseBSM3 of
+                                  true ->
+                                      bs_pos_bsm3(Linear0, CtxChain, Count0);
+                                  false ->
+                                      bs_pos_bsm2(Linear0, CtxChain, Count0)
+                              end,
+
+            %% Rename instructions.
+            Linear = bs_instrs(Linear1, CtxChain, []),
+
+            St#st{ssa=maps:from_list(Linear),cnt=Count}
+    end.
+
+%% Insert bs_get_position and bs_set_position instructions as needed.
+bs_pos_bsm3(Linear0, CtxChain, Count0) ->
+    Rs0 = bs_restores(Linear0, CtxChain, #{}, #{}),
+    Rs = maps:values(Rs0),
+    S0 = sofs:relation(Rs, [{context,save_point}]),
+    S1 = sofs:relation_to_family(S0),
+    S = sofs:to_external(S1),
+
+    {SavePoints,Count1} = make_bs_pos_dict(S, Count0, []),
+    {Gets,Count2} = make_bs_setpos_map(Rs, SavePoints, Count1, []),
+    {Sets,Count} = make_bs_getpos_map(maps:to_list(Rs0), SavePoints, Count2, []),
+
+    %% Now insert all saves and restores.
+    {bs_insert_bsm3(Linear0, Gets, Sets, SavePoints),Count}.
+
+make_bs_setpos_map([{Ctx,Save}=Ps|T], SavePoints, Count, Acc) ->
+    SavePoint = get_savepoint(Ps, SavePoints),
+    I = #b_set{op=bs_get_position,dst=SavePoint,args=[Ctx]},
+    make_bs_setpos_map(T, SavePoints, Count+1, [{Save,I}|Acc]);
+make_bs_setpos_map([], _, Count, Acc) ->
+    {maps:from_list(Acc),Count}.
+
+make_bs_getpos_map([{Bef,{Ctx,_}=Ps}|T], SavePoints, Count, Acc) ->
+    Ignored = #b_var{name={'@ssa_ignored',Count}},
+    Args = [Ctx, get_savepoint(Ps, SavePoints)],
+    I = #b_set{op=bs_set_position,dst=Ignored,args=Args},
+    make_bs_getpos_map(T, SavePoints, Count+1, [{Bef,I}|Acc]);
+make_bs_getpos_map([], _, Count, Acc) ->
+    {maps:from_list(Acc),Count}.
+
+get_savepoint({_,_}=Ps, SavePoints) ->
+    Name = {'@ssa_bs_position', map_get(Ps, SavePoints)},
+    #b_var{name=Name}.
+
+make_bs_pos_dict([{Ctx,Pts}|T], Count0, Acc0) ->
+    {Acc, Count} = make_bs_pos_dict_1(Pts, Ctx, Count0, Acc0),
+    make_bs_pos_dict(T, Count, Acc);
+make_bs_pos_dict([], Count, Acc) ->
+    {maps:from_list(Acc), Count}.
+
+make_bs_pos_dict_1([H|T], Ctx, I, Acc) ->
+    make_bs_pos_dict_1(T, Ctx, I+1, [{{Ctx,H},I}|Acc]);
+make_bs_pos_dict_1([], Ctx, I, Acc) ->
+    {[{Ctx,I}|Acc], I}.
+
+%% As bs_position but without OTP-22 instructions. This is only used when
+%% cross-compiling to older versions.
+bs_pos_bsm2(Linear0, CtxChain, Count0) ->
+    Rs0 = bs_restores(Linear0, CtxChain, #{}, #{}),
+    Rs = maps:values(Rs0),
+    S0 = sofs:relation(Rs, [{context,save_point}]),
+    S1 = sofs:relation_to_family(S0),
+    S = sofs:to_external(S1),
+    Slots = make_save_point_dict(S, []),
+    {Saves,Count1} = make_save_map(Rs, Slots, Count0, []),
+    {Restores,Count} = make_restore_map(maps:to_list(Rs0), Slots, Count1, []),
+
+    %% Now insert all saves and restores.
+    {bs_insert_bsm2(Linear0, Saves, Restores, Slots),Count}.
+
+make_save_map([{Ctx,Save}=Ps|T], Slots, Count, Acc) ->
+    Ignored = #b_var{name={'@ssa_ignored',Count}},
+    case make_slot(Ps, Slots) of
+        #b_literal{val=start} ->
+            make_save_map(T, Slots, Count, Acc);
+        Slot ->
+            I = #b_set{op=bs_save,dst=Ignored,args=[Ctx,Slot]},
+            make_save_map(T, Slots, Count+1, [{Save,I}|Acc])
+    end;
+make_save_map([], _, Count, Acc) ->
+    {maps:from_list(Acc),Count}.
+
+make_restore_map([{Bef,{Ctx,_}=Ps}|T], Slots, Count, Acc) ->
+    Ignored = #b_var{name={'@ssa_ignored',Count}},
+    I = #b_set{op=bs_restore,dst=Ignored,args=[Ctx,make_slot(Ps, Slots)]},
+    make_restore_map(T, Slots, Count+1, [{Bef,I}|Acc]);
+make_restore_map([], _, Count, Acc) ->
+    {maps:from_list(Acc),Count}.
+
+make_slot({Same,Same}, _Slots) ->
+    #b_literal{val=start};
+make_slot({_,_}=Ps, Slots) ->
+    #b_literal{val=map_get(Ps, Slots)}.
+
+make_save_point_dict([{Ctx,Pts}|T], Acc0) ->
+    Acc = make_save_point_dict_1(Pts, Ctx, 0, Acc0),
+    make_save_point_dict(T, Acc);
+make_save_point_dict([], Acc) ->
+    maps:from_list(Acc).
+
+make_save_point_dict_1([Ctx|T], Ctx, I, Acc) ->
+    %% Special {atom,start} save point. Does not need a
+    %% bs_save instruction.
+    make_save_point_dict_1(T, Ctx, I, Acc);
+make_save_point_dict_1([H|T], Ctx, I, Acc) ->
+    make_save_point_dict_1(T, Ctx, I+1, [{{Ctx,H},I}|Acc]);
+make_save_point_dict_1([], Ctx, I, Acc) ->
+    [{Ctx,I}|Acc].
+
+bs_restores([{L,#b_blk{is=Is,last=Last}}|Bs], CtxChain, D0, Rs0) ->
+    FPos = case D0 of
+               #{L:=Pos0} -> Pos0;
+               #{} -> #{}
+           end,
+    {SPos,Rs} = bs_restores_is(Is, CtxChain, FPos, Rs0),
+    D = bs_update_successors(Last, SPos, FPos, D0),
+    bs_restores(Bs, CtxChain, D, Rs);
+bs_restores([], _, _, Rs) -> Rs.
+
+bs_update_successors(#b_br{succ=Succ,fail=Fail}, SPos, FPos, D) ->
+    join_positions([{Succ,SPos},{Fail,FPos}], D);
+bs_update_successors(#b_switch{fail=Fail,list=List}, SPos, _FPos, D) ->
+    Update = [{L,SPos} || {_,L} <- List] ++ [{Fail,SPos}],
+    join_positions(Update, D);
+bs_update_successors(#b_ret{}, _, _, D) -> D.
+
+join_positions([{L,MapPos0}|T], D) ->
+    case D of
+        #{L:=MapPos0} ->
+            %% Same map.
+            join_positions(T, D);
+        #{L:=MapPos1} ->
+            %% Different maps.
+            MapPos = join_positions_1(MapPos0, MapPos1),
+            join_positions(T, D#{L:=MapPos});
+        #{} ->
+            join_positions(T, D#{L=>MapPos0})
+    end;
+join_positions([], D) -> D.
+
+join_positions_1(MapPos0, MapPos1) ->
+    MapPos2 = maps:map(fun(Start, Pos) ->
+                               case MapPos0 of
+                                   #{Start:=Pos} -> Pos;
+                                   #{Start:=_} -> unknown;
+                                   #{} -> Pos
+                               end
+                       end, MapPos1),
+    maps:merge(MapPos0, MapPos2).
+
+bs_restores_is([#b_set{op=bs_start_match,dst=Start}|Is],
+               CtxChain, PosMap0, Rs) ->
+    PosMap = PosMap0#{Start=>Start},
+    bs_restores_is(Is, CtxChain, PosMap, Rs);
+bs_restores_is([#b_set{op=bs_match,dst=NewPos,args=Args}=I|Is],
+               CtxChain, PosMap0, Rs0) ->
+    Start = bs_subst_ctx(NewPos, CtxChain),
+    [_,FromPos|_] = Args,
+    case PosMap0 of
+        #{Start:=FromPos} ->
+            %% Same position, no restore needed.
+            PosMap = case bs_match_type(I) of
+                         plain ->
+                             %% Update position to new position.
+                             PosMap0#{Start:=NewPos};
+                         _ ->
+                             %% Position will not change (test_unit
+                             %% instruction or no instruction at
+                             %% all).
+                             PosMap0#{Start:=FromPos}
+                     end,
+            bs_restores_is(Is, CtxChain, PosMap, Rs0);
+        #{Start:=_} ->
+            %% Different positions, might need a restore instruction.
+            case bs_match_type(I) of
+                none ->
+                    %% The tail test will be optimized away.
+                    %% No need to do a restore.
+                    PosMap = PosMap0#{Start:=FromPos},
+                    bs_restores_is(Is, CtxChain, PosMap, Rs0);
+                test_unit ->
+                    %% This match instruction will be replaced by
+                    %% a test_unit instruction. We will need a
+                    %% restore. The new position will be the position
+                    %% restored to (NOT NewPos).
+                    PosMap = PosMap0#{Start:=FromPos},
+                    Rs = Rs0#{NewPos=>{Start,FromPos}},
+                    bs_restores_is(Is, CtxChain, PosMap, Rs);
+                plain ->
+                    %% Match or skip. Position will be changed.
+                    PosMap = PosMap0#{Start:=NewPos},
+                    Rs = Rs0#{NewPos=>{Start,FromPos}},
+                    bs_restores_is(Is, CtxChain, PosMap, Rs)
+            end
+    end;
+bs_restores_is([#b_set{op=bs_extract,args=[FromPos|_]}|Is],
+               CtxChain, PosMap, Rs) ->
+    Start = bs_subst_ctx(FromPos, CtxChain),
+    #{Start:=FromPos} = PosMap,                 %Assertion.
+    bs_restores_is(Is, CtxChain, PosMap, Rs);
+bs_restores_is([#b_set{op=call,dst=Dst,args=Args}|Is],
+               CtxChain, PosMap0, Rs0) ->
+    {Rs,PosMap1} = bs_restore_args(Args, PosMap0, CtxChain, Dst, Rs0),
+    PosMap = bs_invalidate_pos(Args, PosMap1, CtxChain),
+    bs_restores_is(Is, CtxChain, PosMap, Rs);
+bs_restores_is([#b_set{op=landingpad}|Is], CtxChain, PosMap0, Rs) ->
+    %% We can land here from any point, so all positions are invalid.
+    PosMap = maps:map(fun(_Start,_Pos) -> unknown end, PosMap0),
+    bs_restores_is(Is, CtxChain, PosMap, Rs);
+bs_restores_is([#b_set{op=Op,dst=Dst,args=Args}|Is],
+               CtxChain, PosMap0, Rs0)
+  when Op =:= bs_test_tail;
+       Op =:= bs_get_tail ->
+    {Rs,PosMap} = bs_restore_args(Args, PosMap0, CtxChain, Dst, Rs0),
+    bs_restores_is(Is, CtxChain, PosMap, Rs);
+bs_restores_is([_|Is], CtxChain, PosMap, Rs) ->
+    bs_restores_is(Is, CtxChain, PosMap, Rs);
+bs_restores_is([], _CtxChain, PosMap, Rs) ->
+    {PosMap,Rs}.
+
+bs_match_type(#b_set{args=[#b_literal{val=skip},_Ctx,
+                             #b_literal{val=binary},_Flags,
+                             #b_literal{val=all},#b_literal{val=U}]}) ->
+    case U of
+        1 -> none;
+        _ -> test_unit
+    end;
+bs_match_type(_) ->
+    plain.
+
+%% Call instructions leave the match position in an undefined state,
+%% requiring us to invalidate each affected argument.
+bs_invalidate_pos([#b_var{}=Arg|Args], PosMap0, CtxChain) ->
+    Start = bs_subst_ctx(Arg, CtxChain),
+    case PosMap0 of
+        #{Start:=_} ->
+            PosMap = PosMap0#{Start:=unknown},
+            bs_invalidate_pos(Args, PosMap, CtxChain);
+        #{} ->
+            %% Not a match context.
+            bs_invalidate_pos(Args, PosMap0, CtxChain)
+    end;
+bs_invalidate_pos([_|Args], PosMap, CtxChain) ->
+    bs_invalidate_pos(Args, PosMap, CtxChain);
+bs_invalidate_pos([], PosMap, _CtxChain) ->
+    PosMap.
+
+bs_restore_args([#b_var{}=Arg|Args], PosMap0, CtxChain, Dst, Rs0) ->
+    Start = bs_subst_ctx(Arg, CtxChain),
+    case PosMap0 of
+        #{Start:=Arg} ->
+            %% Same position, no restore needed.
+            bs_restore_args(Args, PosMap0, CtxChain, Dst, Rs0);
+        #{Start:=_} ->
+            %% Different positions, need a restore instruction.
+            PosMap = PosMap0#{Start:=Arg},
+            Rs = Rs0#{Dst=>{Start,Arg}},
+            bs_restore_args(Args, PosMap, CtxChain, Dst, Rs);
+        #{} ->
+            %% Not a match context.
+            bs_restore_args(Args, PosMap0, CtxChain, Dst, Rs0)
+    end;
+bs_restore_args([_|Args], PosMap, CtxChain, Dst, Rs) ->
+    bs_restore_args(Args, PosMap, CtxChain, Dst, Rs);
+bs_restore_args([], PosMap, _CtxChain, _Dst, Rs) ->
+    {Rs,PosMap}.
+
+%% Insert all bs_save and bs_restore instructions.
+
+bs_insert_bsm3(Blocks, Saves, Restores, SavePoints) ->
+    bs_insert_1(Blocks, Saves, Restores, SavePoints, fun(I) -> I end).
+
+bs_insert_bsm2(Blocks, Saves, Restores, SavePoints) ->
+    %% The old instructions require bs_start_match to be annotated with the
+    %% number of position slots it needs.
+    bs_insert_1(Blocks, Saves, Restores, SavePoints,
+                fun(#b_set{op=bs_start_match,dst=Dst}=I0) ->
+                        NumSlots = case SavePoints of
+                                       #{Dst:=NumSlots0} -> NumSlots0;
+                                       #{} -> 0
+                                   end,
+                        beam_ssa:add_anno(num_slots, NumSlots, I0);
+                   (I) ->
+                        I
+                end).
+
+bs_insert_1([{L,#b_blk{is=Is0}=Blk}|Bs0], Saves, Restores, Slots, XFrm) ->
+    Is = bs_insert_is_1(Is0, Restores, Slots, XFrm),
+    Bs = bs_insert_saves(Is, Bs0, Saves),
+    [{L,Blk#b_blk{is=Is}}|bs_insert_1(Bs, Saves, Restores, Slots, XFrm)];
+bs_insert_1([], _, _, _, _) -> [].
+
+bs_insert_is_1([#b_set{op=Op,dst=Dst}=I0|Is], Restores, SavePoints, XFrm) ->
+    I = XFrm(I0),
+    if
+        Op =:= bs_test_tail;
+        Op =:= bs_get_tail;
+        Op =:= bs_match;
+        Op =:= call ->
+            Rs = case Restores of
+                     #{Dst:=R} -> [R];
+                     #{} -> []
+                 end,
+            Rs ++ [I|bs_insert_is_1(Is, Restores, SavePoints, XFrm)];
+        true ->
+            [I|bs_insert_is_1(Is, Restores, SavePoints, XFrm)]
+    end;
+bs_insert_is_1([], _, _, _) -> [].
+
+bs_insert_saves([#b_set{dst=Dst}|Is], Bs, Saves) ->
+    case Saves of
+        #{Dst:=S} ->
+            bs_insert_save(S, Bs);
+        #{} ->
+            bs_insert_saves(Is, Bs, Saves)
+    end;
+bs_insert_saves([], Bs, _) -> Bs.
+
+bs_insert_save(Save, [{L,#b_blk{is=Is0}=Blk}|Bs]) ->
+    Is = case Is0 of
+             [#b_set{op=bs_extract}=Ex|Is1] ->
+                 [Ex,Save|Is1];
+             _ ->
+                 [Save|Is0]
+         end,
+    [{L,Blk#b_blk{is=Is}}|Bs].
+
+%% Translate bs_match instructions to bs_get, bs_match_string,
+%% or bs_skip. Also rename match context variables to use the
+%% variable assigned to by the start_match instruction.
+
+bs_instrs([{L,#b_blk{is=Is0}=Blk}|Bs], CtxChain, Acc0) ->
+    case bs_instrs_is(Is0, CtxChain, []) of
+        [#b_set{op=bs_extract,dst=Dst,args=[Ctx]}|Is] ->
+            %% Drop this instruction. Rewrite the corresponding
+            %% bs_match instruction in the previous block to
+            %% a bs_get instruction.
+            Acc = bs_combine(Dst, Ctx, Acc0),
+            bs_instrs(Bs, CtxChain, [{L,Blk#b_blk{is=Is}}|Acc]);
+        Is ->
+            bs_instrs(Bs, CtxChain, [{L,Blk#b_blk{is=Is}}|Acc0])
+    end;
+bs_instrs([], _, Acc) ->
+    reverse(Acc).
+
+bs_instrs_is([#b_set{op=Op,args=Args0}=I0|Is], CtxChain, Acc) ->
+    Args = [bs_subst_ctx(A, CtxChain) || A <- Args0],
+    I1 = I0#b_set{args=Args},
+    I = case {Op,Args} of
+            {bs_match,[#b_literal{val=skip},Ctx,Type|As]} ->
+                I1#b_set{op=bs_skip,args=[Type,Ctx|As]};
+            {bs_match,[#b_literal{val=string},Ctx|As]} ->
+                I1#b_set{op=bs_match_string,args=[Ctx|As]};
+            {bs_get_tail,[Ctx|As]} ->
+                I1#b_set{op=bs_get_tail,args=[Ctx|As]};
+            {_,_} ->
+                I1
+        end,
+    bs_instrs_is(Is, CtxChain, [I|Acc]);
+bs_instrs_is([], _, Acc) ->
+    reverse(Acc).
+
+%% Combine a bs_match instruction with the destination register
+%% taken from a bs_extract instruction.
+
+bs_combine(Dst, Ctx, [{L,#b_blk{is=Is0}=Blk}|Acc]) ->
+    [#b_set{}=Succeeded,
+     #b_set{op=bs_match,args=[Type,_|As]}=BsMatch|Is1] = reverse(Is0),
+    Is = reverse(Is1, [BsMatch#b_set{op=bs_get,dst=Dst,args=[Type,Ctx|As]},
+                       Succeeded#b_set{args=[Dst]}]),
+    [{L,Blk#b_blk{is=Is}}|Acc].
+
+bs_subst_ctx(#b_var{}=Var, CtxChain) ->
+    case CtxChain of
+        #{Var:={context,Ctx}} ->
+            Ctx;
+        #{Var:=ParentCtx} ->
+            bs_subst_ctx(ParentCtx, CtxChain);
+        #{} ->
+            %% Not a match context variable.
+            Var
+    end;
+bs_subst_ctx(Other, _CtxChain) ->
+    Other.
+
+%% legacy_bs(St0) -> St.
+%%  Binary matching instructions in OTP 21 and earlier don't support
+%%  a Y register as destination. If St#st.use_bsm3 is false,
+%%  we will need to rewrite those instructions so that the result
+%%  is first put in an X register and then moved to a Y register
+%%  if the operation succeeded.
+
+legacy_bs(#st{use_bsm3=false,ssa=Blocks0,cnt=Count0,res=Res}=St) ->
+    IsYreg = maps:from_list([{V,true} || {V,{y,_}} <- Res]),
+    Linear0 = beam_ssa:linearize(Blocks0),
+    {Linear,Count} = legacy_bs(Linear0, IsYreg, Count0, #{}, []),
+    Blocks = maps:from_list(Linear),
+    St#st{ssa=Blocks,cnt=Count};
+legacy_bs(#st{use_bsm3=true}=St) -> St.
+
+legacy_bs([{L,Blk}|Bs], IsYreg, Count0, Copies0, Acc) ->
+    #b_blk{is=Is0,last=Last} = Blk,
+    Is1 = case Copies0 of
+              #{L:=Copy} -> [Copy|Is0];
+              #{} -> Is0
+          end,
+    {Is,Count,Copies} = legacy_bs_is(Is1, Last, IsYreg, Count0, Copies0, []),
+    legacy_bs(Bs, IsYreg, Count, Copies, [{L,Blk#b_blk{is=Is}}|Acc]);
+legacy_bs([], _IsYreg, Count, _Copies, Acc) ->
+    {Acc,Count}.
+
+legacy_bs_is([#b_set{op=Op,dst=Dst}=I0,
+              #b_set{op=succeeded,dst=SuccDst,args=[Dst]}=SuccI0],
+             Last, IsYreg, Count0, Copies0, Acc) ->
+    NeedsFix = is_map_key(Dst, IsYreg) andalso
+        case Op of
+            bs_get -> true;
+            bs_init -> true;
+            _ -> false
+        end,
+    case NeedsFix of
+        true ->
+            TempDst = #b_var{name={'@bs_temp_dst',Count0}},
+            Count = Count0 + 1,
+            I = I0#b_set{dst=TempDst},
+            SuccI = SuccI0#b_set{args=[TempDst]},
+            Copy = #b_set{op=copy,dst=Dst,args=[TempDst]},
+            #b_br{bool=SuccDst,succ=SuccL} = Last,
+            Copies = Copies0#{SuccL=>Copy},
+            legacy_bs_is([], Last, IsYreg, Count, Copies, [SuccI,I|Acc]);
+        false ->
+            legacy_bs_is([], Last, IsYreg, Count0, Copies0, [SuccI0,I0|Acc])
+    end;
+legacy_bs_is([I|Is], Last, IsYreg, Count, Copies, Acc) ->
+    legacy_bs_is(Is, Last, IsYreg, Count, Copies, [I|Acc]);
+legacy_bs_is([], _Last, _IsYreg, Count, Copies, Acc) ->
+    {reverse(Acc),Count,Copies}.
+
+%% sanitize(St0) -> St.
+%%  Remove constructs that can cause problems later:
+%%
+%%  * Unreachable blocks may cause problems for determination of
+%%  dominators.
+%%
+%%  * Some instructions (such as get_hd) don't accept literal
+%%  arguments. Evaluate the instructions and remove them.
+
+sanitize(#st{ssa=Blocks0,cnt=Count0}=St) ->
+    Ls = beam_ssa:rpo(Blocks0),
+    {Blocks,Count} = sanitize(Ls, Count0, Blocks0, #{}),
+    St#st{ssa=Blocks,cnt=Count}.
+
+sanitize([L|Ls], Count0, Blocks0, Values0) ->
+    #b_blk{is=Is0} = Blk0 = map_get(L, Blocks0),
+    case sanitize_is(Is0, Count0, Values0, false, []) of
+        no_change ->
+            sanitize(Ls, Count0, Blocks0, Values0);
+        {Is,Count,Values} ->
+            Blk = Blk0#b_blk{is=Is},
+            Blocks = Blocks0#{L:=Blk},
+            sanitize(Ls, Count, Blocks, Values)
+    end;
+sanitize([], Count, Blocks0, Values) ->
+    Blocks = if
+                 map_size(Values) =:= 0 ->
+                     Blocks0;
+                 true ->
+                     beam_ssa:rename_vars(Values, [0], Blocks0)
+             end,
+
+    %% Unreachable blocks can cause problems for the dominator calculations.
+    Ls = beam_ssa:rpo(Blocks),
+    Reachable = gb_sets:from_list(Ls),
+    {case map_size(Blocks) =:= gb_sets:size(Reachable) of
+         true -> Blocks;
+         false -> remove_unreachable(Ls, Blocks, Reachable, [])
+     end,Count}.
+
+sanitize_is([#b_set{op=get_map_element,args=Args0}=I0|Is],
+            Count0, Values, Changed, Acc) ->
+    case sanitize_args(Args0, Values) of
+        [#b_literal{}=Map,Key] ->
+            %% Bind the literal map to a variable.
+            {MapVar,Count} = new_var('@ssa_map', Count0),
+            I = I0#b_set{args=[MapVar,Key]},
+            Copy = #b_set{op=copy,dst=MapVar,args=[Map]},
+            sanitize_is(Is, Count, Values, true, [I,Copy|Acc]);
+        [_,_]=Args0 ->
+            sanitize_is(Is, Count0, Values, Changed, [I0|Acc]);
+        [_,_]=Args ->
+            I = I0#b_set{args=Args},
+            sanitize_is(Is, Count0, Values, Changed, [I|Acc])
+    end;
+sanitize_is([#b_set{op=Op,dst=Dst,args=Args0}=I0|Is0],
+            Count, Values, Changed0, Acc) ->
+    Args = sanitize_args(Args0, Values),
+    case sanitize_instr(Op, Args, I0) of
+        {value,Value0} ->
+            Value = #b_literal{val=Value0},
+            sanitize_is(Is0, Count, Values#{Dst=>Value}, true, Acc);
+        {ok,I} ->
+            sanitize_is(Is0, Count, Values, true, [I|Acc]);
+        ok ->
+            I = I0#b_set{args=Args},
+            Changed = Changed0 orelse Args =/= Args0,
+            sanitize_is(Is0, Count, Values, Changed, [I|Acc])
+    end;
+sanitize_is([], Count, Values, Changed, Acc) ->
+    case Changed of
+        true ->
+            {reverse(Acc),Count,Values};
+        false ->
+            no_change
+    end.
+
+sanitize_args(Args, Values) ->
+    map(fun(Var) ->
+                case Values of
+                    #{Var:=New} -> New;
+                    #{} -> Var
+                end
+        end, Args).
+
+sanitize_instr({bif,Bif}, [#b_literal{val=Lit}], _I) ->
+    case erl_bifs:is_pure(erlang, Bif, 1) of
+        false ->
+            ok;
+        true ->
+            try
+                {value,erlang:Bif(Lit)}
+            catch
+                error:_ ->
+                    ok
+            end
+    end;
+sanitize_instr({bif,Bif}, [#b_literal{val=Lit1},#b_literal{val=Lit2}], _I) ->
+    true = erl_bifs:is_pure(erlang, Bif, 2),    %Assertion.
+    try
+        {value,erlang:Bif(Lit1, Lit2)}
+    catch
+        error:_ ->
+            ok
+    end;
+sanitize_instr(get_hd, [#b_literal{val=[Hd|_]}], _I) ->
+    {value,Hd};
+sanitize_instr(get_tl, [#b_literal{val=[_|Tl]}], _I) ->
+    {value,Tl};
+sanitize_instr(get_tuple_element, [#b_literal{val=T},
+                                   #b_literal{val=I}], _I)
+  when I < tuple_size(T) ->
+    {value,element(I+1, T)};
+sanitize_instr(is_nonempty_list, [#b_literal{val=Lit}], _I) ->
+    {value,case Lit of
+               [_|_] -> true;
+               _ -> false
+           end};
+sanitize_instr(is_tagged_tuple, [#b_literal{val=Tuple},
+                                 #b_literal{val=Arity},
+                                 #b_literal{val=Tag}], _I)
+  when is_integer(Arity), is_atom(Tag) ->
+    if
+        tuple_size(Tuple) =:= Arity, element(1, Tuple) =:= Tag ->
+            {value,true};
+        true ->
+            {value,false}
+    end;
+sanitize_instr(bs_init, [#b_literal{val=new},#b_literal{val=Sz}|_], I0) ->
+    if
+        is_integer(Sz), Sz >= 0 -> ok;
+        true -> {ok,sanitize_badarg(I0)}
+    end;
+sanitize_instr(bs_init, [#b_literal{val=append},_,#b_literal{val=Sz}|_], I0) ->
+    if
+        is_integer(Sz), Sz >= 0 -> ok;
+        true -> {ok,sanitize_badarg(I0)}
+    end;
+sanitize_instr(succeeded, [#b_literal{}], _I) ->
+    {value,true};
+sanitize_instr(_, _, _) -> ok.
+
+sanitize_badarg(I) ->
+    Func = #b_remote{mod=#b_literal{val=erlang},
+                     name=#b_literal{val=error},arity=1},
+    I#b_set{op=call,args=[Func,#b_literal{val=badarg}]}.
+
+remove_unreachable([L|Ls], Blocks, Reachable, Acc) ->
+    #b_blk{is=Is0} = Blk0 = map_get(L, Blocks),
+    case split_phis(Is0) of
+        {[_|_]=Phis,Rest} ->
+            Is = [prune_phi(Phi, Reachable) || Phi <- Phis] ++ Rest,
+            Blk = Blk0#b_blk{is=Is},
+            remove_unreachable(Ls, Blocks, Reachable, [{L,Blk}|Acc]);
+        {[],_} ->
+            remove_unreachable(Ls, Blocks, Reachable, [{L,Blk0}|Acc])
+    end;
+remove_unreachable([], _Blocks, _, Acc) ->
+    maps:from_list(Acc).
+
+prune_phi(#b_set{args=Args0}=Phi, Reachable) ->
+    Args = [A || {_,Pred}=A <- Args0,
+                 gb_sets:is_element(Pred, Reachable)],
+    Phi#b_set{args=Args}.
+
+%%%
+%%% Fix tuples.
+%%%
+
+%% fix_tuples(St0) -> St.
+%%  If compatibility with a previous version of Erlang has been
+%%  requested, tuple creation must be split into two instruction to
+%%  mirror the the way tuples are created in BEAM prior to OTP 22.
+%%  Each put_tuple instruction is split into put_tuple_arity followed
+%%  by put_tuple_elements.
+
+fix_tuples(#st{ssa=Blocks0,cnt=Count0}=St) ->
+    F = fun (#b_set{op=put_tuple,args=Args}=Put, C0) ->
+                Arity = #b_literal{val=length(Args)},
+                {Ignore,C} = new_var('@ssa_ignore', C0),
+                {[Put#b_set{op=put_tuple_arity,args=[Arity]},
+                  #b_set{dst=Ignore,op=put_tuple_elements,args=Args}],C};
+           (I, C) -> {[I],C}
+        end,
+    {Blocks,Count} = beam_ssa:flatmapfold_instrs_rpo(F, [0], Count0, Blocks0),
+    St#st{ssa=Blocks,cnt=Count}.
+
+%%%
+%%% Introduce the set_tuple_element instructions to make
+%%% multiple-field record updates faster.
+%%%
+%%% The expansion of record field updates, when more than one field is
+%%% updated, but not a majority of the fields, will create a sequence of
+%%% calls to `erlang:setelement(Index, Value, Tuple)` where Tuple in the
+%%% first call is the original record tuple, and in the subsequent calls
+%%% Tuple is the result of the previous call. Furthermore, all Index
+%%% values are constant positive integers, and the first call to
+%%% `setelement` will have the greatest index. Thus all the following
+%%% calls do not actually need to test at run-time whether Tuple has type
+%%% tuple, nor that the index is within the tuple bounds.
+%%%
+%%% Since this optimization introduces destructive updates, it used to
+%%% be done as the very last Core Erlang pass before going to
+%%% lower-level code. However, it turns out that this kind of destructive
+%%% updates are awkward also in SSA code and can prevent or complicate
+%%% type analysis and aggressive optimizations.
+%%%
+%%% NOTE: Because there no write barriers in the system, this kind of
+%%% optimization can only be done when we are sure that garbage
+%%% collection will not be triggered between the creation of the tuple
+%%% and the destructive updates - otherwise we might insert pointers
+%%% from an older generation to a newer.
+%%%
+
+use_set_tuple_element(#st{ssa=Blocks0}=St) ->
+    Uses = count_uses(Blocks0),
+    RPO = reverse(beam_ssa:rpo(Blocks0)),
+    Blocks = use_ste_1(RPO, Uses, Blocks0),
+    St#st{ssa=Blocks}.
+
+use_ste_1([L|Ls], Uses, Blocks0) ->
+    {Blk0,Blocks} = use_ste_across(L, Uses, Blocks0),
+    #b_blk{is=Is0} = Blk0,
+    case use_ste_is(Is0, Uses) of
+        Is0 ->
+            use_ste_1(Ls, Uses, Blocks);
+        Is ->
+            Blk = Blk0#b_blk{is=Is},
+            use_ste_1(Ls, Uses, Blocks#{L:=Blk})
+    end;
+use_ste_1([], _, Blocks) -> Blocks.
+
+%%% Optimize within a single block.
+
+use_ste_is([#b_set{}=I|Is0], Uses) ->
+    Is = use_ste_is(Is0, Uses),
+    case extract_ste(I) of
+        none ->
+            [I|Is];
+        Extracted ->
+            use_ste_call(Extracted, I, Is, Uses)
+    end;
+use_ste_is([], _Uses) -> [].
+
+use_ste_call({Dst0,Pos0,_Var0,_Val0}, Call1, Is0, Uses) ->
+    case get_ste_call(Is0, []) of
+        {Prefix,{Dst1,Pos1,Dst0,Val1},Call2,Is}
+          when Pos1 > 0, Pos0 > Pos1 ->
+            case is_single_use(Dst0, Uses) of
+                true ->
+                    Call = Call1#b_set{dst=Dst1},
+                    Args = [Val1,Dst1,#b_literal{val=Pos1-1}],
+                    Dsetel = Call2#b_set{op=set_tuple_element,
+                                         dst=Dst0,
+                                         args=Args},
+                    [Call|Prefix] ++ [Dsetel|Is];
+                false ->
+                    [Call1|Is0]
+            end;
+        _ ->
+            [Call1|Is0]
+    end.
+
+get_ste_call([#b_set{op=get_tuple_element}=I|Is], Acc) ->
+    get_ste_call(Is, [I|Acc]);
+get_ste_call([#b_set{op=call}=I|Is], Acc) ->
+    case extract_ste(I) of
+        none ->
+            none;
+        Extracted ->
+            {reverse(Acc),Extracted,I,Is}
+    end;
+get_ste_call(_, _) -> none.
+
+extract_ste(#b_set{op=call,dst=Dst,
+                   args=[#b_remote{mod=#b_literal{val=M},
+                                  name=#b_literal{val=F}}|Args]}) ->
+    case {M,F,Args} of
+        {erlang,setelement,[#b_literal{val=Pos},Tuple,Val]} ->
+            {Dst,Pos,Tuple,Val};
+        {_,_,_} ->
+            none
+    end;
+extract_ste(#b_set{}) -> none.
+
+%%% Optimize accross blocks within a try/catch block.
+
+use_ste_across(L, Uses, Blocks) ->
+    case map_get(L, Blocks) of
+        #b_blk{last=#b_br{bool=#b_var{}}}=Blk ->
+            try
+                use_ste_across_1(L, Blk, Uses, Blocks)
+            catch
+                throw:not_possible ->
+                    {Blk,Blocks}
+            end;
+        #b_blk{}=Blk ->
+            {Blk,Blocks}
+    end.
+
+use_ste_across_1(L, Blk0, Uses, Blocks0) ->
+    #b_blk{is=IsThis,last=#b_br{bool=Bool,succ=Next}} = Blk0,
+    case reverse(IsThis) of
+        [#b_set{op=succeeded,dst=Bool,args=[Result]}=Succ0,
+         #b_set{op=call,args=[#b_remote{}|_],dst=Result}=Call1|Prefix] ->
+            case is_single_use(Bool, Uses) andalso
+                is_n_uses(2, Result, Uses) of
+                true -> ok;
+                false -> throw(not_possible)
+            end,
+            Call2 = use_ste_across_next(Next, Uses, Blocks0),
+            Is = [Call1,Call2],
+            case use_ste_is(Is, decrement_uses(Result, Uses)) of
+                [#b_set{}=Call,#b_set{op=set_tuple_element}=Ste] ->
+                    Blocks1 = use_ste_fix_next(Ste, Next, Blocks0),
+                    Succ = Succ0#b_set{args=[Call#b_set.dst]},
+                    Blk = Blk0#b_blk{is=reverse(Prefix, [Call,Succ])},
+                    Blocks = Blocks1#{L:=Blk},
+                    {Blk,Blocks};
+                _ ->
+                    throw(not_possible)
+            end;
+        _ ->
+            throw(not_possible)
+    end.
+
+use_ste_across_next(Next, Uses, Blocks) ->
+    case map_get(Next, Blocks) of
+        #b_blk{is=[#b_set{op=call,dst=Result,args=[#b_remote{}|_]}=Call,
+                   #b_set{op=succeeded,dst=Bool,args=[Result]}],
+               last=#b_br{bool=Bool}} ->
+            case is_single_use(Bool, Uses) andalso
+                is_n_uses(2, Result, Uses) of
+                true -> ok;
+                false -> throw(not_possible)
+            end,
+            Call;
+        #b_blk{} ->
+            throw(not_possible)
+    end.
+
+use_ste_fix_next(Ste, Next, Blocks) ->
+    Blk0 = map_get(Next, Blocks),
+    #b_blk{is=[#b_set{op=call},#b_set{op=succeeded}],last=Br0} = Blk0,
+    Br = beam_ssa:normalize(Br0#b_br{bool=#b_literal{val=true}}),
+    Blk = Blk0#b_blk{is=[Ste],last=Br},
+    Blocks#{Next:=Blk}.
+
+%% Count how many times each variable is used.
+
+count_uses(Blocks) ->
+    count_uses_blk(maps:values(Blocks), #{}).
+
+count_uses_blk([#b_blk{is=Is,last=Last}|Bs], CountMap0) ->
+    F = fun(I, CountMap) ->
+                foldl(fun(Var, Acc) ->
+                              case Acc of
+                                  #{Var:=3} -> Acc;
+                                  #{Var:=C} -> Acc#{Var:=C+1};
+                                  #{} ->       Acc#{Var=>1}
+                              end
+                      end, CountMap, beam_ssa:used(I))
+        end,
+    CountMap = F(Last, foldl(F, CountMap0, Is)),
+    count_uses_blk(Bs, CountMap);
+count_uses_blk([], CountMap) -> CountMap.
+
+decrement_uses(V, Uses) ->
+    #{V:=C} = Uses,
+    Uses#{V:=C-1}.
+
+is_n_uses(N, V, Uses) ->
+    case Uses of
+        #{V:=N} -> true;
+        #{} -> false
+    end.
+
+is_single_use(V, Uses) ->
+    case Uses of
+        #{V:=1} -> true;
+        #{} -> false
+    end.
+
+%%%
+%%% Find out where frames should be placed.
+%%%
+
+%% place_frames(St0) -> St.
+%%   Return a list of the labels for the blocks that need stack frame
+%%   allocation instructions.
+%%
+%%   This function attempts to place stack frames as tight as possible
+%%   around the code, to avoid building stack frames for code paths
+%%   that don't need one.
+%%
+%%   Stack frames are placed in blocks that dominate all of their
+%%   descendants. That guarantees that the deallocation instructions
+%%   cannot be reached from other execution paths that didn't set up
+%%   a stack frame or set up a stack frame with a different size.
+
+place_frames(#st{ssa=Blocks}=St) ->
+    {Doms,_} = beam_ssa:dominators(Blocks),
+    Ls = beam_ssa:rpo(Blocks),
+    Tried = gb_sets:empty(),
+    Frames0 = [],
+    {Frames,_} = place_frames_1(Ls, Blocks, Doms, Tried, Frames0),
+    St#st{frames=Frames}.
+
+place_frames_1([L|Ls], Blocks, Doms, Tried0, Frames0) ->
+    Blk = map_get(L, Blocks),
+    case need_frame(Blk) of
+        true ->
+            %% This block needs a frame. Try to place it here.
+            {Frames,Tried} = do_place_frame(L, Blocks, Doms, Tried0, Frames0),
+
+            %% Successfully placed. Try to place more frames in descendants
+            %% that are not dominated by this block.
+            place_frames_1(Ls, Blocks, Doms, Tried, Frames);
+        false ->
+            try
+                place_frames_1(Ls, Blocks, Doms, Tried0, Frames0)
+            catch
+                throw:{need_frame,For,Tried1}=Reason ->
+                    %% An descendant block needs a stack frame. Try to
+                    %% place it here.
+                    case is_dominated_by(For, L, Doms) of
+                        true ->
+                            %% Try to place a frame here.
+                            {Frames,Tried} = do_place_frame(L, Blocks, Doms,
+                                                            Tried1, Frames0),
+                            place_frames_1(Ls, Blocks, Doms, Tried, Frames);
+                        false ->
+                            %% Wrong place. This block does not dominate
+                            %% the block that needs the frame. Pass it on
+                            %% to our ancestors.
+                            throw(Reason)
+                    end
+            end
+    end;
+place_frames_1([], _, _, Tried, Frames) ->
+    {Frames,Tried}.
+
+%% do_place_frame(Label, Blocks, Dominators, Tried0, Frames0) -> {Frames,Tried}.
+%%  Try to place a frame in this block. This function returns
+%%  successfully if it either succeds at placing a frame in this
+%%  block, if an ancestor that dominates this block has already placed
+%%  a frame, or if we have already tried to put a frame in this block.
+%%
+%%  An {need_frame,Label,Tried} exception will be thrown if this block
+%%  block is not suitable for having a stack frame (i.e. it does not dominate
+%%  all of its descendants). The exception means that an ancestor will have to
+%%  place the frame needed by this block.
+
+do_place_frame(L, Blocks, Doms, Tried0, Frames) ->
+    case gb_sets:is_element(L, Tried0) of
+        true ->
+            %% We have already tried to put a frame in this block.
+            {Frames,Tried0};
+        false ->
+            %% Try to place a frame in this block.
+            Tried = gb_sets:insert(L, Tried0),
+            case place_frame_here(L, Blocks, Doms, Frames) of
+                yes ->
+                    %% We need a frame and it is safe to place it here.
+                    {[L|Frames],Tried};
+                no ->
+                    %% An ancestor has a frame. Not needed.
+                    {Frames,Tried};
+                ancestor ->
+                    %% This block does not dominate all of its
+                    %% descendants. We must place the frame in
+                    %% an ancestor.
+                    throw({need_frame,L,Tried})
+            end
+    end.
+
+%% place_frame_here(Label, Blocks, Doms, Frames) -> no|yes|ancestor.
+%%  Determine whether a frame should be placed in block Label.
+
+place_frame_here(L, Blocks, Doms, Frames) ->
+    B0 = any(fun(DomBy) ->
+                     is_dominated_by(L, DomBy, Doms)
+             end, Frames),
+    case B0 of
+        true ->
+            %% This block is dominated by an ancestor block that
+            %% defines a frame. Not needed/allowed to put a frame
+            %% here.
+            no;
+        false ->
+            %% No frame in any ancestor. We need a frame.
+            %% Now check whether the frame can be placed here.
+            %% If this block dominates all of its descendants
+            %% and the predecessors of any phi nodes it can be
+            %% placed here.
+            Descendants = beam_ssa:rpo([L], Blocks),
+            PhiPredecessors = phi_predecessors(L, Blocks),
+            MustDominate = ordsets:from_list(PhiPredecessors ++ Descendants),
+            Dominates = all(fun(?BADARG_BLOCK) ->
+                                    %% This block defines no variables and calls
+                                    %% erlang:error(badarg). It does not matter
+                                    %% whether L dominates ?BADARG_BLOCK or not;
+                                    %% it is still safe to put the frame in L.
+                                    true;
+                               (Bl) ->
+                                    is_dominated_by(Bl, L, Doms)
+                            end, MustDominate),
+
+            %% Also, this block must not be a loop header.
+            IsLoopHeader = is_loop_header(L, Blocks),
+            case Dominates andalso not IsLoopHeader of
+                true -> yes;
+                false -> ancestor
+            end
+    end.
+
+%% phi_predecessors(Label, Blocks) ->
+%%  Return all predecessors referenced in phi nodes.
+
+phi_predecessors(L, Blocks) ->
+    #b_blk{is=Is} = map_get(L, Blocks),
+    [P || #b_set{op=phi,args=Args} <- Is, {_,P} <- Args].
+
+%% is_dominated_by(Label, DominatedBy, Dominators) -> true|false.
+%%  Test whether block Label is dominated by block DominatedBy.
+
+is_dominated_by(L, DomBy, Doms) ->
+    DominatedBy = map_get(L, Doms),
+    member(DomBy, DominatedBy).
+
+%% need_frame(#b_blk{}) -> true|false.
+%%  Test whether any of the instructions in the block requires a stack frame.
+
+need_frame(#b_blk{is=Is,last=#b_ret{arg=Ret}}) ->
+    need_frame_1(Is, {return,Ret});
+need_frame(#b_blk{is=Is}) ->
+    need_frame_1(Is, body).
+
+need_frame_1([#b_set{op=make_fun,dst=Fun}|Is], {return,_}=Context) ->
+    %% Since make_fun clobbers X registers, a stack frame is needed if
+    %% any of the following instructions use any other variable than
+    %% the one holding the reference to the created fun.
+    need_frame_1(Is, Context) orelse
+        case beam_ssa:used(#b_blk{is=Is,last=#b_ret{arg=Fun}}) of
+            [Fun] -> false;
+            [_|_] -> true
+        end;
+need_frame_1([#b_set{op=new_try_tag}|_], _) ->
+    true;
+need_frame_1([#b_set{op=call,dst=Val}]=Is, {return,Ret}) ->
+    if
+        Val =:= Ret -> need_frame_1(Is, tail);
+        true -> need_frame_1(Is, body)
+    end;
+need_frame_1([#b_set{op=call,args=[Func|_]}|Is], Context) ->
+    case Func of
+        #b_remote{mod=#b_literal{val=Mod},
+                  name=#b_literal{val=Name},
+                  arity=Arity} when is_atom(Mod), is_atom(Name) ->
+            case erl_bifs:is_exit_bif(Mod, Name, Arity) of
+                true ->
+                    false;
+                false ->
+                    Context =:= body orelse
+                        Is =/= [] orelse
+                        is_trap_bif(Mod, Name, Arity)
+                end;
+        #b_remote{} ->
+            %% This is an apply(), which always needs a frame.
+            true;
+        #b_local{} ->
+            Context =:= body orelse Is =/= [];
+        _ ->
+             %% A fun call always needs a frame.
+            true
+    end;
+need_frame_1([I|Is], Context) ->
+    beam_ssa:clobbers_xregs(I) orelse need_frame_1(Is, Context);
+need_frame_1([], _) -> false.
+
+%% is_trap_bif(Mod, Name, Arity) -> true|false.
+%%   Test whether we need a stack frame for this BIF.
+
+is_trap_bif(erlang, '!', 2) -> true;
+is_trap_bif(erlang, link, 1) -> true;
+is_trap_bif(erlang, unlink, 1) -> true;
+is_trap_bif(erlang, monitor_node, 2) -> true;
+is_trap_bif(erlang, group_leader, 2) -> true;
+is_trap_bif(erlang, exit, 2) -> true;
+is_trap_bif(_, _, _) -> false.
+
+%%%
+%%% Fix variables used in matching in receive.
+%%%
+%%% The loop_rec/2 instruction may return a reference to a
+%%% message outside of any heap or heap fragment. If the message
+%%% does not match, it is not allowed to store any reference to
+%%% the message (or part of the message) on the stack. If we do,
+%%% the message will be corrupted if there happens to be a GC.
+%%%
+%%% Here we make sure to introduce copies of variables that are
+%%% matched out and subsequently used after the remove_message/0
+%%% instructions. That will make sure that only X registers are
+%%% used during matching.
+%%%
+%%% Depending on where variables are defined and used, they must
+%%% be handled in two different ways.
+%%%
+%%% Variables that are always defined in the receive (before branching
+%%% out into the different clauses of the receive) and used after the
+%%% receive must be handled in the following way: Before each
+%%% remove_message instruction, each such variable must be copied, and
+%%% all variables must be consolidated using a phi node in the
+%%% common exit block for the receive.
+%%%
+%%% Variables that are matched out and used in the same clause
+%%% need copy instructions before the remove_message instruction
+%%% in that clause.
+%%%
+
+fix_receives(#st{ssa=Blocks0,cnt=Count0}=St) ->
+    {Blocks,Count} = fix_receives_1(maps:to_list(Blocks0),
+                                    Blocks0, Count0),
+    St#st{ssa=Blocks,cnt=Count}.
+
+fix_receives_1([{L,Blk}|Ls], Blocks0, Count0) ->
+    case Blk of
+        #b_blk{is=[#b_set{op=peek_message}|_]} ->
+            Rm = find_rm_blocks(L, Blocks0),
+            LoopExit = find_loop_exit(Rm, Blocks0),
+            Defs0 = beam_ssa:def([L], Blocks0),
+            CommonUsed = recv_common(Defs0, LoopExit, Blocks0),
+            {Blocks1,Count1} = recv_fix_common(CommonUsed, LoopExit, Rm,
+                                               Blocks0, Count0),
+            Defs = ordsets:subtract(Defs0, CommonUsed),
+            {Blocks,Count} = fix_receive(Rm, Defs, Blocks1, Count1),
+            fix_receives_1(Ls, Blocks, Count);
+        #b_blk{} ->
+            fix_receives_1(Ls, Blocks0, Count0)
+    end;
+fix_receives_1([], Blocks, Count) ->
+    {Blocks,Count}.
+
+recv_common(_Defs, none, _Blocks) ->
+    %% There is no common exit block because receive is used
+    %% in the tail position of a function.
+    [];
+recv_common(Defs, Exit, Blocks) ->
+    {ExitDefs,ExitUsed} = beam_ssa:def_used([Exit], Blocks),
+    Def = ordsets:subtract(Defs, ExitDefs),
+    ordsets:intersection(Def, ExitUsed).
+
+%% recv_fix_common([CommonVar], LoopExit, [RemoveMessageLabel],
+%%                 Blocks0, Count0) -> {Blocks,Count}.
+%%  Handle variables alwys defined in a receive and used
+%%  in the exit block following the receive.
+
+recv_fix_common([Msg0|T], Exit, Rm, Blocks0, Count0) ->
+    {Msg,Count1} = new_var('@recv', Count0),
+    Blocks1 = beam_ssa:rename_vars(#{Msg0=>Msg}, [Exit], Blocks0),
+    N = length(Rm),
+    {MsgVars,Count} = new_vars(duplicate(N, '@recv'), Count1),
+    PhiArgs = fix_exit_phi_args(MsgVars, Rm, Exit, Blocks1),
+    Phi = #b_set{op=phi,dst=Msg,args=PhiArgs},
+    ExitBlk0 = map_get(Exit, Blocks1),
+    ExitBlk = ExitBlk0#b_blk{is=[Phi|ExitBlk0#b_blk.is]},
+    Blocks2 = Blocks1#{Exit:=ExitBlk},
+    Blocks = recv_fix_common_1(MsgVars, Rm, Msg0, Blocks2),
+    recv_fix_common(T, Exit, Rm, Blocks, Count);
+recv_fix_common([], _, _, Blocks, Count) ->
+    {Blocks,Count}.
+
+recv_fix_common_1([V|Vs], [Rm|Rms], Msg, Blocks0) ->
+    Ren = #{Msg=>V},
+    Blocks1 = beam_ssa:rename_vars(Ren, [Rm], Blocks0),
+    #b_blk{is=Is0} = Blk0 = map_get(Rm, Blocks1),
+    Copy = #b_set{op=copy,dst=V,args=[Msg]},
+    Is = insert_after_phis(Is0, [Copy]),
+    Blk = Blk0#b_blk{is=Is},
+    Blocks = Blocks1#{Rm:=Blk},
+    recv_fix_common_1(Vs, Rms, Msg, Blocks);
+recv_fix_common_1([], [], _Msg, Blocks) -> Blocks.
+
+fix_exit_phi_args([V|Vs], [Rm|Rms], Exit, Blocks) ->
+    Path = beam_ssa:rpo([Rm], Blocks),
+    Preds = exit_predecessors(Path, Exit, Blocks),
+    [{V,Pred} || Pred <- Preds] ++ fix_exit_phi_args(Vs, Rms, Exit, Blocks);
+fix_exit_phi_args([], [], _, _) -> [].
+
+exit_predecessors([L|Ls], Exit, Blocks) ->
+    Blk = map_get(L, Blocks),
+    case member(Exit, beam_ssa:successors(Blk)) of
+        true ->
+            [L|exit_predecessors(Ls, Exit, Blocks)];
+        false ->
+            exit_predecessors(Ls, Exit, Blocks)
+    end;
+exit_predecessors([], _Exit, _Blocks) -> [].
+
+%% fix_receive([Label], Defs, Blocks0, Count0) -> {Blocks,Count}.
+%%  Add a copy instruction for all variables that are matched out and
+%%  later used within a clause of the receive.
+
+fix_receive([L|Ls], Defs, Blocks0, Count0) ->
+    {RmDefs,Used0} = beam_ssa:def_used([L], Blocks0),
+    Def = ordsets:subtract(Defs, RmDefs),
+    Used = ordsets:intersection(Def, Used0),
+    {NewVars,Count} = new_vars([Base || #b_var{name=Base} <- Used], Count0),
+    Ren = zip(Used, NewVars),
+    Blocks1 = beam_ssa:rename_vars(Ren, [L], Blocks0),
+    #b_blk{is=Is0} = Blk1 = map_get(L, Blocks1),
+    CopyIs = [#b_set{op=copy,dst=New,args=[Old]} || {Old,New} <- Ren],
+    Is = insert_after_phis(Is0, CopyIs),
+    Blk = Blk1#b_blk{is=Is},
+    Blocks = Blocks1#{L:=Blk},
+    fix_receive(Ls, Defs, Blocks, Count);
+fix_receive([], _Defs, Blocks, Count) ->
+    {Blocks,Count}.
+
+%% find_loop_exit([Label], Blocks) -> Label | none.
+%%  Find the block to which control is transferred when the
+%%  the receive loop is exited.
+
+find_loop_exit([L1,L2|_Ls], Blocks) ->
+    Path1 = beam_ssa:rpo([L1], Blocks),
+    Path2 = beam_ssa:rpo([L2], Blocks),
+    find_loop_exit_1(reverse(Path1), reverse(Path2), none);
+find_loop_exit(_, _) -> none.
+
+find_loop_exit_1([H|T1], [H|T2], _) ->
+    find_loop_exit_1(T1, T2, H);
+find_loop_exit_1(_, _, Exit) -> Exit.
+
+%% find_rm_blocks(StartLabel, Blocks) -> [Label].
+%%  Find all blocks that start with remove_message within the receive
+%%  loop whose peek_message label is StartLabel.
+
+find_rm_blocks(L, Blocks) ->
+    Seen = gb_sets:singleton(L),
+    Blk = map_get(L, Blocks),
+    Succ = beam_ssa:successors(Blk),
+    find_rm_blocks_1(Succ, Seen, Blocks).
+
+find_rm_blocks_1([L|Ls], Seen0, Blocks) ->
+    case gb_sets:is_member(L, Seen0) of
+        true ->
+            find_rm_blocks_1(Ls, Seen0, Blocks);
+        false ->
+            Seen = gb_sets:insert(L, Seen0),
+            Blk = map_get(L, Blocks),
+            case find_rm_act(Blk#b_blk.is) of
+                prune ->
+                    %% Looping back. Don't look at any successors.
+                    find_rm_blocks_1(Ls, Seen, Blocks);
+                continue ->
+                    %% Neutral block. Do nothing here, but look at
+                    %% all successors.
+                    Succ = beam_ssa:successors(Blk),
+                    find_rm_blocks_1(Succ++Ls, Seen, Blocks);
+                found ->
+                    %% Found remove_message instruction.
+                    [L|find_rm_blocks_1(Ls, Seen, Blocks)]
+            end
+    end;
+find_rm_blocks_1([], _, _) -> [].
+
+find_rm_act([#b_set{op=Op}|Is]) ->
+    case Op of
+        remove_message -> found;
+        peek_message -> prune;
+        recv_next -> prune;
+        wait_timeout -> prune;
+        wait -> prune;
+        _ -> find_rm_act(Is)
+    end;
+find_rm_act([]) ->
+    continue.
+
+%%%
+%%% Find out which variables need to be stored in Y registers.
+%%%
+
+-record(dk, {d :: ordsets:ordset(var_name()),
+             k :: ordsets:ordset(var_name())
+            }).
+
+%% find_yregs(St0) -> St.
+%%  Find all variables that must be stored in Y registers. Annotate
+%%  the blocks that allocate frames with the set of Y registers
+%%  used within that stack frame.
+%%
+%%  Basically, we following all execution paths starting from a block
+%%  that allocates a frame, keeping track of of all defined registers
+%%  and all registers killed by an instruction that clobbers X
+%%  registers. For every use of a variable, we check if if it is in
+%%  the set of killed variables; if it is, it must be stored in an Y
+%%  register.
+
+find_yregs(#st{frames=[]}=St) ->
+    St;
+find_yregs(#st{frames=[_|_]=Frames,args=Args,ssa=Blocks0}=St) ->
+    FrameDefs = find_defs(Frames, Blocks0, [V || #b_var{}=V <- Args]),
+    Blocks = find_yregs_1(FrameDefs, Blocks0),
+    St#st{ssa=Blocks}.
+
+find_yregs_1([{F,Defs}|Fs], Blocks0) ->
+    DK = #dk{d=Defs,k=[]},
+    D0 = #{F=>DK},
+    Ls = beam_ssa:rpo([F], Blocks0),
+    Yregs0 = [],
+    Yregs = find_yregs_2(Ls, Blocks0, D0, Yregs0),
+    Blk0 = map_get(F, Blocks0),
+    Blk = beam_ssa:add_anno(yregs, Yregs, Blk0),
+    Blocks = Blocks0#{F:=Blk},
+    find_yregs_1(Fs, Blocks);
+find_yregs_1([], Blocks) -> Blocks.
+
+find_yregs_2([L|Ls], Blocks0, D0, Yregs0) ->
+    Blk0 = map_get(L, Blocks0),
+    #b_blk{is=Is,last=Last} = Blk0,
+    Ys0 = map_get(L, D0),
+    {Yregs1,Ys} = find_yregs_is(Is, Ys0, Yregs0),
+    Yregs = find_yregs_terminator(Last, Ys, Yregs1),
+    Successors = beam_ssa:successors(Blk0),
+    D = find_update_succ(Successors, Ys, D0),
+    find_yregs_2(Ls, Blocks0, D, Yregs);
+find_yregs_2([], _Blocks, _D, Yregs) -> Yregs.
+
+find_defs(Frames, Blocks, Defs) ->
+    Seen = gb_sets:empty(),
+    FramesSet = gb_sets:from_list(Frames),
+    {FrameDefs,_} = find_defs_1([0], Blocks, FramesSet, Seen, Defs, []),
+    FrameDefs.
+
+find_defs_1([L|Ls], Blocks, Frames, Seen0, Defs0, Acc0) ->
+    case gb_sets:is_member(L, Frames) of
+        true ->
+            OrderedDefs = ordsets:from_list(Defs0),
+            find_defs_1(Ls, Blocks, Frames, Seen0, Defs0,
+                        [{L,OrderedDefs}|Acc0]);
+        false ->
+            case gb_sets:is_member(L, Seen0) of
+                true ->
+                    find_defs_1(Ls, Blocks, Frames, Seen0, Defs0, Acc0);
+                false ->
+                    Seen1 = gb_sets:insert(L, Seen0),
+                    {Acc,Seen} = find_defs_1(Ls, Blocks, Frames, Seen1, Defs0, Acc0),
+                    #b_blk{is=Is} = Blk = map_get(L, Blocks),
+                    Defs = find_defs_is(Is, Defs0),
+                    Successors = beam_ssa:successors(Blk),
+                    find_defs_1(Successors, Blocks, Frames, Seen, Defs, Acc)
+            end
+    end;
+find_defs_1([], _, _, Seen, _, Acc) ->
+    {Acc,Seen}.
+
+find_defs_is([#b_set{dst=Dst}|Is], Acc) ->
+    find_defs_is(Is, [Dst|Acc]);
+find_defs_is([], Acc) -> Acc.
+
+find_update_succ([S|Ss], #dk{d=Defs0,k=Killed0}=DK0, D0) ->
+    case D0 of
+        #{S:=#dk{d=Defs1,k=Killed1}} ->
+            Defs = ordsets:intersection(Defs0, Defs1),
+            Killed = ordsets:union(Killed0, Killed1),
+            DK = #dk{d=Defs,k=Killed},
+            D = D0#{S:=DK},
+            find_update_succ(Ss, DK0, D);
+        #{} ->
+            D = D0#{S=>DK0},
+            find_update_succ(Ss, DK0, D)
+    end;
+find_update_succ([], _, D) -> D.
+
+find_yregs_is([#b_set{dst=Dst}=I|Is], #dk{d=Defs0,k=Killed0}=Ys, Yregs0) ->
+    Used = beam_ssa:used(I),
+    Yregs1 = ordsets:intersection(Used, Killed0),
+    Yregs = ordsets:union(Yregs0, Yregs1),
+    case beam_ssa:clobbers_xregs(I) of
+        false ->
+            Defs = ordsets:add_element(Dst, Defs0),
+            find_yregs_is(Is, Ys#dk{d=Defs}, Yregs);
+        true ->
+            Killed = ordsets:union(Defs0, Killed0),
+            Defs = [Dst],
+            find_yregs_is(Is, Ys#dk{d=Defs,k=Killed}, Yregs)
+    end;
+find_yregs_is([], Ys, Yregs) -> {Yregs,Ys}.
+
+find_yregs_terminator(Terminator, #dk{k=Killed}, Yregs0) ->
+    Used = beam_ssa:used(Terminator),
+    Yregs = ordsets:intersection(Used, Killed),
+    ordsets:union(Yregs0, Yregs).
+
+%%%
+%%% Try to reduce the size of the stack frame, by adding an explicit
+%%% 'copy' instructions for return values from 'call' and 'make_fun' that
+%%% need to be saved in Y registers. Here is an example to show
+%%% how that's useful. First, here is the Erlang code:
+%%%
+%%% f(Pid) ->
+%%%    Res = foo(42),
+%%%    _ = node(Pid),
+%%%    bar(),
+%%%    Res.
+%%%
+%%% Compiled to SSA format, the main part of the code looks like this:
+%%%
+%%% 0:
+%%%   Res = call local literal foo/1, literal 42
+%%%   _1 = bif:node Pid
+%%%   @ssa_bool = succeeded _1
+%%%   br @ssa_bool, label 3, label 1
+%%% 3:
+%%%   @ssa_ignored = call local literal bar/0
+%%%   ret Res
+%%%
+%%% It can be seen that the variables Pid and Res must be saved in Y
+%%% registers in order to survive the function calls. A previous sub
+%%% pass has inserted a 'copy' instruction to save the value of the
+%%% variable Pid:
+%%%
+%%% 0:
+%%%   Pid:4 = copy Pid
+%%%   Res = call local literal foo/1, literal 42
+%%%   _1 = bif:node Pid:4
+%%%   @ssa_bool = succeeded _1
+%%%   br @ssa_bool, label 3, label 1
+%%%
+%%% 3:
+%%%   @ssa_ignored = call local literal bar/0
+%%%   ret Res
+%%%
+%%% The Res and Pid:4 variables must be assigned to different Y registers
+%%% because they are live at the same time. copy_retval() inserts a
+%%% 'copy' instruction to copy Res to a new variable:
+%%%
+%%% 0:
+%%%   Pid:4 = copy Pid
+%%%   Res:6 = call local literal foo/1, literal 42
+%%%   _1 = bif:node Pid:4
+%%%   @ssa_bool = succeeded _1
+%%%   br @ssa_bool, label 3, label 1
+%%%
+%%% 3:
+%%%   Res = copy Res:6
+%%%   @ssa_ignored = call local literal bar/0
+%%%   ret Res
+%%%
+%%% The new variable Res:6 is used to capture the return value from the call.
+%%% The variables Pid:4 and Res are no longer live at the same time, so they
+%%% can be assigned to the same Y register.
+%%%
+
+copy_retval(#st{frames=Frames,ssa=Blocks0,cnt=Count0}=St) ->
+    {Blocks,Count} = copy_retval_1(Frames, Blocks0, Count0),
+    St#st{ssa=Blocks,cnt=Count}.
+
+copy_retval_1([F|Fs], Blocks0, Count0) ->
+    #b_blk{anno=#{yregs:=Yregs0},is=Is} = map_get(F, Blocks0),
+    Yregs1 = gb_sets:from_list(Yregs0),
+    Yregs = collect_yregs(Is, Yregs1),
+    Ls = beam_ssa:rpo([F], Blocks0),
+    {Blocks,Count} = copy_retval_2(Ls, Yregs, none, Blocks0, Count0),
+    copy_retval_1(Fs, Blocks, Count);
+copy_retval_1([], Blocks, Count) ->
+    {Blocks,Count}.
+
+collect_yregs([#b_set{op=copy,dst=Y,args=[#b_var{}=X]}|Is],
+              Yregs0) ->
+    true = gb_sets:is_member(X, Yregs0),        %Assertion.
+    Yregs = gb_sets:insert(Y, gb_sets:delete(X, Yregs0)),
+    collect_yregs(Is, Yregs);
+collect_yregs([#b_set{}|Is], Yregs) ->
+    collect_yregs(Is, Yregs);
+collect_yregs([], Yregs) -> Yregs.
+
+copy_retval_2([L|Ls], Yregs, Copy0, Blocks0, Count0) ->
+    #b_blk{is=Is0,last=Last} = Blk = map_get(L, Blocks0),
+    RC = case {Last,Ls} of
+             {#b_br{succ=Succ,fail=?BADARG_BLOCK},[Succ|_]} ->
+                 true;
+             {_,_} ->
+                 false
+         end,
+    case copy_retval_is(Is0, RC, Yregs, Copy0, Count0, []) of
+        {Is,Count} ->
+            case Copy0 =:= none andalso Count0 =:= Count of
+                true ->
+                    copy_retval_2(Ls, Yregs, none, Blocks0, Count0);
+                false ->
+                    Blocks = Blocks0#{L=>Blk#b_blk{is=Is}},
+                    copy_retval_2(Ls, Yregs, none, Blocks, Count)
+            end;
+        {Is,Count,Copy} ->
+            Blocks = Blocks0#{L=>Blk#b_blk{is=Is}},
+            copy_retval_2(Ls, Yregs, Copy, Blocks, Count)
+    end;
+copy_retval_2([], _Yregs, none, Blocks, Count) ->
+    {Blocks,Count}.
+
+copy_retval_is([#b_set{op=put_tuple_elements,args=Args0}=I0], false, _Yregs,
+           Copy, Count, Acc) ->
+    I = I0#b_set{args=copy_sub_args(Args0, Copy)},
+    {reverse(Acc, [I|acc_copy([], Copy)]),Count};
+copy_retval_is([#b_set{op=Op}=I0], false, Yregs, Copy, Count0, Acc0)
+  when Op =:= call; Op =:= make_fun ->
+    {I,Count,Acc} = place_retval_copy(I0, Yregs, Copy, Count0, Acc0),
+    {reverse(Acc, [I]),Count};
+copy_retval_is([#b_set{}]=Is, false, _Yregs, Copy, Count, Acc) ->
+    {reverse(Acc, acc_copy(Is, Copy)),Count};
+copy_retval_is([#b_set{},#b_set{op=succeeded}]=Is, false, _Yregs, Copy, Count, Acc) ->
+    {reverse(Acc, acc_copy(Is, Copy)),Count};
+copy_retval_is([#b_set{op=Op,dst=#b_var{name=RetName}=Dst}=I0|Is], RC, Yregs,
+           Copy0, Count0, Acc0) when Op =:= call; Op =:= make_fun ->
+    {I1,Count1,Acc} = place_retval_copy(I0, Yregs, Copy0, Count0, Acc0),
+    case gb_sets:is_member(Dst, Yregs) of
+        true ->
+            {NewVar,Count} = new_var(RetName, Count1),
+            Copy = #b_set{op=copy,dst=Dst,args=[NewVar]},
+            I = I1#b_set{dst=NewVar},
+            copy_retval_is(Is, RC, Yregs, Copy, Count, [I|Acc]);
+        false ->
+            copy_retval_is(Is, RC, Yregs, none, Count1, [I1|Acc])
+    end;
+copy_retval_is([#b_set{args=Args0}=I0|Is], RC, Yregs, Copy, Count, Acc) ->
+    I = I0#b_set{args=copy_sub_args(Args0, Copy)},
+    case beam_ssa:clobbers_xregs(I) of
+        true ->
+            copy_retval_is(Is, RC, Yregs, none, Count, [I|acc_copy(Acc, Copy)]);
+        false ->
+            copy_retval_is(Is, RC, Yregs, Copy, Count, [I|Acc])
+        end;
+copy_retval_is([], RC, _, Copy, Count, Acc) ->
+    case {Copy,RC} of
+        {none,_} ->
+            {reverse(Acc),Count};
+        {#b_set{},true} ->
+            {reverse(Acc),Count,Copy};
+        {#b_set{},false} ->
+            {reverse(Acc, [Copy]),Count}
+    end.
+
+%%
+%% Consider this code:
+%%
+%%   Var = ...
+%%   ...
+%%   A1 = call foo/0
+%%   A = copy A1
+%%   B = call bar/1, Var
+%%
+%% If the Var variable is no longer used after this code, its Y register
+%% can't be reused for A. To allow the Y register to be reused
+%% we will need to insert 'copy' instructions for arguments that are
+%% in Y registers:
+%%
+%%   Var = ...
+%%   ...
+%%   A1 = call foo/0
+%%   Var1 = copy Var
+%%   A = copy A1
+%%   B = call bar/1, Var1
+%%
+
+place_retval_copy(I, _Yregs, none, Count, Acc) ->
+    {I,Count,Acc};
+place_retval_copy(#b_set{args=[F|Args0]}=I, Yregs, Copy, Count0, Acc0) ->
+    #b_set{dst=Avoid} = Copy,
+    {Args,Acc1,Count} = copy_func_args(Args0, Yregs, Avoid, Acc0, [], Count0),
+    Acc = [Copy|Acc1],
+    {I#b_set{args=[F|Args]},Count,Acc}.
+
+copy_func_args([#b_var{name=AName}=A|As], Yregs, Avoid, CopyAcc, Acc, Count0) ->
+    case gb_sets:is_member(A, Yregs) of
+        true when A =/= Avoid ->
+            {NewVar,Count} = new_var(AName, Count0),
+            Copy = #b_set{op=copy,dst=NewVar,args=[A]},
+            copy_func_args(As, Yregs, Avoid, [Copy|CopyAcc], [NewVar|Acc], Count);
+        _ ->
+            copy_func_args(As, Yregs, Avoid, CopyAcc, [A|Acc], Count0)
+    end;
+copy_func_args([A|As], Yregs, Avoid, CopyAcc, Acc, Count) ->
+    copy_func_args(As, Yregs, Avoid, CopyAcc, [A|Acc], Count);
+copy_func_args([], _Yregs, _Avoid, CopyAcc, Acc, Count) ->
+    {reverse(Acc),CopyAcc,Count}.
+
+acc_copy(Acc, none) -> Acc;
+acc_copy(Acc, #b_set{}=Copy) -> [Copy|Acc].
+
+copy_sub_args(Args, none) ->
+    Args;
+copy_sub_args(Args, #b_set{dst=Dst,args=[Src]}) ->
+    [sub_arg(A, Dst, Src) || A <- Args].
+
+sub_arg(Old, Old, New) -> New;
+sub_arg(Old, _, _) -> Old.
+
+%%%
+%%% Consider:
+%%%
+%%%   x1/Hd = get_hd x0/Cons
+%%%   y0/Tl = get_tl x0/Cons
+%%%
+%%% Register x0 can't be reused for Hd. If Hd needs to be in x0,
+%%% a 'move' instruction must be inserted.
+%%%
+%%% If we swap get_hd and get_tl when Tl is in a Y register,
+%%% x0 can be used for Hd if Cons is not used again:
+%%%
+%%%   y0/Tl = get_tl x0/Cons
+%%%   x0/Hd = get_hd x0/Cons
+%%%
+
+opt_get_list(#st{ssa=Blocks,res=Res}=St) ->
+    ResMap = maps:from_list(Res),
+    Ls = beam_ssa:rpo(Blocks),
+    St#st{ssa=opt_get_list_1(Ls, ResMap, Blocks)}.
+
+opt_get_list_1([L|Ls], Res, Blocks0) ->
+    #b_blk{is=Is0} = Blk = map_get(L, Blocks0),
+    case opt_get_list_is(Is0, Res, [], false) of
+        no ->
+            opt_get_list_1(Ls, Res, Blocks0);
+        {yes,Is} ->
+            Blocks = Blocks0#{L:=Blk#b_blk{is=Is}},
+            opt_get_list_1(Ls, Res, Blocks)
+    end;
+opt_get_list_1([], _, Blocks) -> Blocks.
+
+opt_get_list_is([#b_set{op=get_hd,dst=Hd,
+                        args=[Cons]}=GetHd,
+                 #b_set{op=get_tl,dst=Tl,
+                        args=[Cons]}=GetTl|Is],
+                Res, Acc, Changed) ->
+    %% Note that when this pass is run, only Y registers have
+    %% reservations. The absence of an entry for a variable therefore
+    %% means that the variable will be in an X register.
+    case Res of
+        #{Hd:={y,_}} ->
+            %% Hd will be in a Y register. Don't swap.
+            opt_get_list_is([GetTl|Is], Res, [GetHd|Acc], Changed);
+        #{Tl:={y,_}} ->
+            %% Tl will be in a Y register. Swap.
+            opt_get_list_is([GetHd|Is], Res, [GetTl|Acc], true);
+        #{} ->
+            %% Both are in X registers. Nothing to do.
+            opt_get_list_is([GetTl|Is], Res, [GetHd|Acc], Changed)
+    end;
+opt_get_list_is([I|Is], Res, Acc, Changed) ->
+    opt_get_list_is(Is, Res, [I|Acc], Changed);
+opt_get_list_is([], _Res, Acc, Changed) ->
+    case Changed of
+        true ->
+            {yes,reverse(Acc)};
+        false ->
+            no
+    end.
+
+%%%
+%%% Number instructions in the order they are executed.
+%%%
+
+%% number_instructions(St0) -> St.
+%%  Number instructions in the order they are executed. Use a step
+%%  size of 2. Don't number phi instructions. All phi variables in
+%%  a block will be live one unit before the first non-phi instruction
+%%  in the block.
+
+number_instructions(#st{ssa=Blocks0}=St) ->
+    Ls = beam_ssa:rpo(Blocks0),
+    St#st{ssa=number_is_1(Ls, 1, Blocks0)}.
+
+number_is_1([L|Ls], N0, Blocks0) ->
+    #b_blk{is=Is0,last=Last0} = Bl0 = map_get(L, Blocks0),
+    {Is,N1} = number_is_2(Is0, N0, []),
+    Last = beam_ssa:add_anno(n, N1, Last0),
+    N = N1 + 2,
+    Bl = Bl0#b_blk{is=Is,last=Last},
+    Blocks = Blocks0#{L:=Bl},
+    number_is_1(Ls, N, Blocks);
+number_is_1([], _, Blocks) -> Blocks.
+
+number_is_2([#b_set{op=phi}=I|Is], N, Acc) ->
+    number_is_2(Is, N, [I|Acc]);
+number_is_2([I0|Is], N, Acc) ->
+    I = beam_ssa:add_anno(n, N, I0),
+    number_is_2(Is, N+2, [I|Acc]);
+number_is_2([], N, Acc) ->
+    {reverse(Acc),N}.
+
+%%%
+%%% Calculate live intervals.
+%%%
+
+live_intervals(#st{args=Args,ssa=Blocks}=St) ->
+    Vars0 = [{V,{0,1}} || #b_var{}=V <- Args],
+    F = fun(L, _, A) -> live_interval_blk(L, Blocks, A) end,
+    LiveMap0 = #{},
+    Acc0 = {[],LiveMap0},
+    {Vars,_} = beam_ssa:fold_po(F, Acc0, Blocks),
+    Intervals = merge_ranges(rel2fam(Vars0++Vars)),
+    St#st{intervals=Intervals}.
+
+merge_ranges([{V,Rs}|T]) ->
+    [{V,merge_ranges_1(Rs)}|merge_ranges(T)];
+merge_ranges([]) -> [].
+
+merge_ranges_1([{A,N},{N,Z}|Rs]) ->
+    merge_ranges_1([{A,Z}|Rs]);
+merge_ranges_1([R|Rs]) ->
+    [R|merge_ranges_1(Rs)];
+merge_ranges_1([]) -> [].
+
+live_interval_blk(L, Blocks, {Vars0,LiveMap0}) ->
+    Live0 = [],
+    Successors = beam_ssa:successors(L, Blocks),
+    Live1 = update_successors(Successors, L, Blocks, LiveMap0, Live0),
+
+    %% Add ranges for all variables that are live in the successors.
+    #b_blk{is=Is,last=Last} = map_get(L, Blocks),
+    End = beam_ssa:get_anno(n, Last),
+    Use = [{V,{use,End+1}} || V <- Live1],
+
+    %% Determine used and defined variables in this block.
+    FirstNumber = first_number(Is, Last),
+    UseDef0 = live_interval_blk_1([Last|reverse(Is)], FirstNumber, Use),
+    UseDef = rel2fam(UseDef0),
+
+    %% Update what is live at the beginning of this block and
+    %% store it.
+    Used = [V || {V,[{use,_}|_]} <- UseDef],
+    Live2 = ordsets:union(Live1, Used),
+    Killed = [V || {V,[{def,_}|_]} <- UseDef],
+    Live = ordsets:subtract(Live2, Killed),
+    LiveMap = LiveMap0#{L=>Live},
+
+    %% Construct the ranges for this block.
+    Vars = make_block_ranges(UseDef, FirstNumber, Vars0),
+    {Vars,LiveMap}.
+
+make_block_ranges([{V,[{def,Def}]}|Vs], First, Acc) ->
+    make_block_ranges(Vs, First, [{V,{Def,Def}}|Acc]);
+make_block_ranges([{V,[{def,Def}|Uses]}|Vs], First, Acc) ->
+    {use,Last} = last(Uses),
+    make_block_ranges(Vs, First, [{V,{Def,Last}}|Acc]);
+make_block_ranges([{V,[{use,_}|_]=Uses}|Vs], First, Acc) ->
+    {use,Last} = last(Uses),
+    make_block_ranges(Vs, First, [{V,{First,Last}}|Acc]);
+make_block_ranges([], _, Acc) -> Acc.
+
+live_interval_blk_1([#b_set{op=phi,dst=Dst}|Is], FirstNumber, Acc0) ->
+    Acc = [{Dst,{def,FirstNumber}}|Acc0],
+    live_interval_blk_1(Is, FirstNumber, Acc);
+live_interval_blk_1([#b_set{op=bs_start_match}=I|Is],
+                    FirstNumber, Acc0) ->
+    N = beam_ssa:get_anno(n, I),
+    #b_set{dst=Dst} = I,
+    Acc1 = [{Dst,{def,N}}|Acc0],
+    Acc = [{V,{use,N}} || V <- beam_ssa:used(I)] ++ Acc1,
+    live_interval_blk_1(Is, FirstNumber, Acc);
+live_interval_blk_1([I|Is], FirstNumber, Acc0) ->
+    N = beam_ssa:get_anno(n, I),
+    Acc1 = case I of
+               #b_set{dst=Dst} ->
+                   [{Dst,{def,N}}|Acc0];
+               _ ->
+                   Acc0
+           end,
+    Used = beam_ssa:used(I),
+    Acc = [{V,{use,N}} || V <- Used] ++ Acc1,
+    live_interval_blk_1(Is, FirstNumber, Acc);
+live_interval_blk_1([], _FirstNumber, Acc) ->
+    Acc.
+
+%% first_number([#b_set{}]) -> InstructionNumber.
+%%  Return the number for the first instruction for the block.
+%%  Note that this number is one less than the first
+%%  non-phi instruction in the block.
+
+first_number([#b_set{op=phi}|Is], Last) ->
+    first_number(Is, Last);
+first_number([I|_], _) ->
+    beam_ssa:get_anno(n, I) - 1;
+first_number([], Last) ->
+    beam_ssa:get_anno(n, Last) - 1.
+
+update_successors([L|Ls], Pred, Blocks, LiveMap, Live0) ->
+    Live1 = ordsets:union(Live0, get_live(L, LiveMap)),
+    #b_blk{is=Is} = map_get(L, Blocks),
+    Live = update_live_phis(Is, Pred, Live1),
+    update_successors(Ls, Pred, Blocks, LiveMap, Live);
+update_successors([], _, _, _, Live) -> Live.
+
+get_live(L, LiveMap) ->
+    case LiveMap of
+        #{L:=Live} -> Live;
+        #{} -> []
+    end.
+
+update_live_phis([#b_set{op=phi,dst=Killed,args=Args}|Is],
+                 Pred, Live0) ->
+    Used = [V || {#b_var{}=V,L} <- Args, L =:= Pred],
+    Live1 = ordsets:union(ordsets:from_list(Used), Live0),
+    Live = ordsets:del_element(Killed, Live1),
+    update_live_phis(Is, Pred, Live);
+update_live_phis(_, _, Live) -> Live.
+
+%%%
+%%% Reserve Y registers.
+%%%
+
+%% reserve_yregs(St0) -> St.
+%%  In each block that allocates a stack frame, insert instructions
+%%  that copy variables that must be in Y registers (given by
+%%  the `yregs` annotation) to new variables.
+%%
+%%  Also allocate specific Y registers for try and catch tags.
+%%  The outermost try/catch tag is placed in y0, any directly
+%%  nested tag in y1, and so on. Note that this is the reversed
+%%  order as required by BEAM; it will be corrected later by
+%%  turn_yregs().
+
+reserve_yregs(#st{frames=Frames}=St0) ->
+    foldl(fun reserve_yregs_1/2, St0, Frames).
+
+reserve_yregs_1(L, #st{ssa=Blocks0,cnt=Count0,res=Res0}=St) ->
+    Blk = map_get(L, Blocks0),
+    Yregs = beam_ssa:get_anno(yregs, Blk),
+    {Def,Used} = beam_ssa:def_used([L], Blocks0),
+    UsedYregs = ordsets:intersection(Yregs, Used),
+    DefBefore = ordsets:subtract(UsedYregs, Def),
+    {BeforeVars,Blocks,Count} = rename_vars(DefBefore, L, Blocks0, Count0),
+    InsideVars = ordsets:subtract(UsedYregs, DefBefore),
+    ResTryTags0 = reserve_try_tags(L, Blocks),
+    ResTryTags = [{V,{Reg,Count}} || {V,Reg} <- ResTryTags0],
+    Vars = BeforeVars ++ InsideVars,
+    Res = [{V,{y,Count}} || V <- Vars] ++ ResTryTags ++ Res0,
+    St#st{res=Res,ssa=Blocks,cnt=Count+1}.
+
+reserve_try_tags(L, Blocks) ->
+    Seen = gb_sets:empty(),
+    {Res0,_} = reserve_try_tags_1([L], Blocks, Seen, #{}),
+    Res1 = [maps:to_list(M) || {_,M} <- maps:to_list(Res0)],
+    Res = [{V,{y,Y}} || {V,Y} <- append(Res1)],
+    ordsets:from_list(Res).
+
+reserve_try_tags_1([L|Ls], Blocks, Seen0, ActMap0) ->
+    case gb_sets:is_element(L, Seen0) of
+        true ->
+            reserve_try_tags_1(Ls, Blocks, Seen0, ActMap0);
+        false ->
+            Seen1 = gb_sets:insert(L, Seen0),
+            #b_blk{is=Is} = Blk = map_get(L, Blocks),
+            Active0 = get_active(L, ActMap0),
+            Active = reserve_try_tags_is(Is, Active0),
+            Successors = beam_ssa:successors(Blk),
+            ActMap1 = update_act_map(Successors, Active, ActMap0),
+            {ActMap,Seen} = reserve_try_tags_1(Ls, Blocks, Seen1, ActMap1),
+            reserve_try_tags_1(Successors, Blocks, Seen,ActMap)
+    end;
+reserve_try_tags_1([], _Blocks, Seen, ActMap) ->
+    {ActMap,Seen}.
+
+get_active(L, ActMap) ->
+    case ActMap of
+        #{L:=Active} -> Active;
+        #{} -> #{}
+    end.
+
+reserve_try_tags_is([#b_set{op=new_try_tag,dst=V}|Is], Active) ->
+    N = map_size(Active),
+    reserve_try_tags_is(Is, Active#{V=>N});
+reserve_try_tags_is([#b_set{op=kill_try_tag,args=[Tag]}|Is], Active) ->
+    reserve_try_tags_is(Is, maps:remove(Tag, Active));
+reserve_try_tags_is([_|Is], Active) ->
+    reserve_try_tags_is(Is, Active);
+reserve_try_tags_is([], Active) -> Active.
+
+update_act_map([L|Ls], Active0, ActMap0) ->
+    case ActMap0 of
+        #{L:=Active1} ->
+            ActMap = ActMap0#{L=>maps:merge(Active0, Active1)},
+            update_act_map(Ls, Active0, ActMap);
+        #{} ->
+            ActMap = ActMap0#{L=>Active0},
+            update_act_map(Ls, Active0, ActMap)
+    end;
+update_act_map([], _, ActMap) -> ActMap.
+
+rename_vars([], _, Blocks, Count) ->
+    {[],Blocks,Count};
+rename_vars(Vs, L, Blocks0, Count0) ->
+    {NewVars,Count} = new_vars([Base || #b_var{name=Base} <- Vs], Count0),
+    Ren = zip(Vs, NewVars),
+    Blocks1 = beam_ssa:rename_vars(Ren, [L], Blocks0),
+    #b_blk{is=Is0} = Blk0 = map_get(L, Blocks1),
+    CopyIs = [#b_set{op=copy,dst=New,args=[Old]} || {Old,New} <- Ren],
+    Is = insert_after_phis(Is0, CopyIs),
+    Blk = Blk0#b_blk{is=Is},
+    Blocks = Blocks1#{L:=Blk},
+    {NewVars,Blocks,Count}.
+
+insert_after_phis([#b_set{op=phi}=I|Is], InsertIs) ->
+    [I|insert_after_phis(Is, InsertIs)];
+insert_after_phis(Is, InsertIs) ->
+    InsertIs ++ Is.
+
+%% frame_size(St0) -> St.
+%%  Calculate the frame size for each block that allocates a frame.
+%%  Annotate the block with the frame size. Also annotate all
+%%  return instructions with {deallocate,FrameSize} to simplify
+%%  code generation.
+
+frame_size(#st{frames=Frames,regs=Regs,ssa=Blocks0}=St) ->
+    Blocks = foldl(fun(L, Blks) ->
+                           frame_size_1(L, Regs, Blks)
+                   end, Blocks0, Frames),
+    St#st{ssa=Blocks}.
+
+frame_size_1(L, Regs, Blocks0) ->
+    Def = beam_ssa:def([L], Blocks0),
+    Yregs0 = [map_get(V, Regs) || V <- Def, is_yreg(map_get(V, Regs))],
+    Yregs = ordsets:from_list(Yregs0),
+    FrameSize = length(ordsets:from_list(Yregs)),
+    if
+        FrameSize =/= 0 ->
+            [{y,0}|_] = Yregs,                  %Assertion.
+            {y,Last} = last(Yregs),
+            Last = FrameSize - 1,               %Assertion.
+            ok;
+        true ->
+            ok
+    end,
+    Blk0 = map_get(L, Blocks0),
+    Blk = beam_ssa:add_anno(frame_size, FrameSize, Blk0),
+
+    %% Insert an annotation for frame deallocation on
+    %% each #b_ret{}.
+    Blocks = Blocks0#{L:=Blk},
+    Reachable = beam_ssa:rpo([L], Blocks),
+    frame_deallocate(Reachable, FrameSize, Blocks).
+
+frame_deallocate([L|Ls], Size, Blocks0) ->
+    Blk0 = map_get(L, Blocks0),
+    Blk = case Blk0 of
+              #b_blk{last=#b_ret{}=Ret0} ->
+                  Ret = beam_ssa:add_anno(deallocate, Size, Ret0),
+                  Blk0#b_blk{last=Ret};
+              #b_blk{} ->
+                  Blk0
+          end,
+    Blocks = Blocks0#{L:=Blk},
+    frame_deallocate(Ls, Size, Blocks);
+frame_deallocate([], _, Blocks) -> Blocks.
+
+
+%% turn_yregs(St0) -> St.
+%%  Renumber y registers so that {y,0} becomes {y,FrameSize-1},
+%%  {y,FrameSize-1} becomes {y,0} and so on. This is to make nested
+%%  catches work. The register allocator (linear_scan()) has given
+%%  a lower number to the outermost catch.
+
+turn_yregs(#st{frames=Frames,regs=Regs0,ssa=Blocks}=St) ->
+    Regs1 = foldl(fun(L, A) ->
+                          Blk = map_get(L, Blocks),
+                          FrameSize = beam_ssa:get_anno(frame_size, Blk),
+                          Def = beam_ssa:def([L], Blocks),
+                          [turn_yregs_1(Def, FrameSize, Regs0)|A]
+                  end, [], Frames),
+    Regs = maps:merge(Regs0, maps:from_list(append(Regs1))),
+    St#st{regs=Regs}.
+
+turn_yregs_1(Def, FrameSize, Regs) ->
+    Yregs0 = [{map_get(V, Regs),V} || V <- Def, is_yreg(map_get(V, Regs))],
+    Yregs1 = rel2fam(Yregs0),
+    FrameSize = length(Yregs1),
+    Yregs2 = [{{y,FrameSize-Y-1},Vs} || {{y,Y},Vs} <- Yregs1],
+    R0 = sofs:family(Yregs2),
+    R1 = sofs:family_to_relation(R0),
+    R = sofs:converse(R1),
+    sofs:to_external(R).
+
+%%%
+%%% Reserving registers before register allocation.
+%%%
+
+%% reserve_regs(St0) -> St.
+%%  Reserve registers prior to register allocation. Y registers
+%%  have already been reserved. This function will reserve z,
+%%  fr, and specific x registers.
+
+reserve_regs(#st{args=Args,ssa=Blocks,intervals=Intervals,res=Res0}=St) ->
+    %% Reserve x0, x1, and so on for the function arguments.
+    Res1 = reserve_arg_regs(Args, 0, Res0),
+
+    %% Reserve Z registers (dummy registers) for instructions with no
+    %% return values (e.g. remove_message) or pseudo-return values
+    %% (e.g. landingpad).
+    Res2 = reserve_zregs(Blocks, Intervals, Res1),
+
+    %% Reserve float registers.
+    Res3 = reserve_fregs(Blocks, Res2),
+
+    %% Reserve all remaining unreserved variables as X registers.
+    Res = maps:from_list(Res3),
+    St#st{res=reserve_xregs(Blocks, Res)}.
+
+reserve_arg_regs([#b_var{}=Arg|Is], N, Acc) ->
+    reserve_arg_regs(Is, N+1, [{Arg,{x,N}}|Acc]);
+reserve_arg_regs([], _, Acc) -> Acc.
+
+reserve_zregs(Blocks, Intervals, Res) ->
+    ShortLived0 = [V || {V,[{Start,End}]} <- Intervals, Start+2 =:= End],
+    ShortLived = cerl_sets:from_list(ShortLived0),
+    F = fun(_, #b_blk{is=Is,last=Last}, A) ->
+                reserve_zreg(Is, Last, ShortLived, A)
+        end,
+    beam_ssa:fold_rpo(F, [0], Res, Blocks).
+
+reserve_zreg([#b_set{op=Op,dst=Dst}],
+              #b_br{bool=Dst}, _ShortLived, A) when Op =:= call;
+                                                    Op =:= get_tuple_element ->
+    %% If type optimization has determined that the result of these
+    %% instructions can be used directly in a branch, we must avoid reserving a
+    %% z register or code generation will fail.
+    A;
+reserve_zreg([#b_set{op={bif,tuple_size},dst=Dst},
+              #b_set{op={bif,'=:='},args=[Dst,Val]}], Last, ShortLived, A0) ->
+    case {Val,Last} of
+        {#b_literal{val=Arity},#b_br{bool=#b_var{}}} when Arity bsr 32 =:= 0 ->
+            %% These two instructions can be combined to a test_arity
+            %% instruction provided that the arity variable is short-lived.
+            reserve_zreg_1(Dst, ShortLived, A0);
+        {_,_} ->
+            %% Either the arity is too big, or the boolean value is not
+            %% used in a conditional branch.
+            A0
+    end;
+reserve_zreg([#b_set{op={bif,tuple_size},dst=Dst}],
+             #b_switch{}, ShortLived, A) ->
+    reserve_zreg_1(Dst, ShortLived, A);
+reserve_zreg([#b_set{op={bif,'xor'}}], _Last, _ShortLived, A) ->
+    %% There is no short, easy way to rewrite 'xor' to a series of
+    %% test instructions.
+    A;
+reserve_zreg([#b_set{op={bif,is_record}}], _Last, _ShortLived, A) ->
+    %% There is no short, easy way to rewrite is_record/2 to a series of
+    %% test instructions.
+    A;
+reserve_zreg([#b_set{op=Op,dst=Dst}|Is], Last, ShortLived, A0) ->
+    IsZReg = case Op of
+                 bs_match_string -> true;
+                 bs_save -> true;
+                 bs_restore -> true;
+                 bs_set_position -> true;
+                 {float,clearerror} -> true;
+                 kill_try_tag -> true;
+                 landingpad -> true;
+                 put_tuple_elements -> true;
+                 remove_message -> true;
+                 set_tuple_element -> true;
+                 succeeded -> true;
+                 timeout -> true;
+                 wait_timeout -> true;
+                 _ -> false
+             end,
+    A = case IsZReg of
+            true -> [{Dst,z}|A0];
+            false -> A0
+        end,
+    reserve_zreg(Is, Last, ShortLived, A);
+reserve_zreg([], #b_br{bool=Bool}, ShortLived, A) ->
+    reserve_zreg_1(Bool, ShortLived, A);
+reserve_zreg([], _, _, A) -> A.
+
+reserve_zreg_1(#b_var{}=V, ShortLived, A) ->
+    case cerl_sets:is_element(V, ShortLived) of
+        true -> [{V,z}|A];
+        false -> A
+    end;
+reserve_zreg_1(#b_literal{}, _, A) -> A.
+
+reserve_fregs(Blocks, Res) ->
+    F = fun(_, #b_blk{is=Is}, A) ->
+                reserve_freg(Is, A)
+        end,
+    beam_ssa:fold_rpo(F, [0], Res, Blocks).
+
+reserve_freg([#b_set{op={float,Op},dst=V}|Is], Res) ->
+    case Op of
+        get ->
+            reserve_freg(Is, Res);
+        _ ->
+            reserve_freg(Is, [{V,fr}|Res])
+    end;
+reserve_freg([_|Is], Res) ->
+    reserve_freg(Is, Res);
+reserve_freg([], Res) -> Res.
+
+%% reserve_xregs(St0) -> St.
+%%  Reserve all remaining variables as X registers.
+%%
+%%  If a variable will need to be in a specific X register for a
+%%  'call' or 'make_fun' (and there is nothing that will kill it
+%%  between the definition and use), reserve the register using a
+%%  {prefer,{x,X} annotation. That annotation means that the linear
+%%  scan algorithm will place the variable in the preferred register,
+%%  unless that register is already occupied.
+%%
+%%  All remaining variables are reserved as X registers. Linear scan
+%%  will allocate the lowest free X register for the variable.
+
+reserve_xregs(Blocks, Res) ->
+    Ls = reverse(beam_ssa:rpo(Blocks)),
+    reserve_xregs(Ls, Blocks, #{}, Res).
+
+reserve_xregs([L|Ls], Blocks, XsMap0, Res0) ->
+    #b_blk{anno=Anno,is=Is0,last=Last} = map_get(L, Blocks),
+
+    %% Calculate mapping from variable name to the preferred
+    %% register.
+    Xs0 = reserve_terminator(L, Is0, Last, Blocks, XsMap0, Res0),
+
+    %% We need to figure out where the code generator will
+    %% place instructions that will do a garbage collection.
+    %% Insert 'gc' markers as pseudo-instructions in the
+    %% instruction sequence.
+    Is1 = reverse(Is0),
+    Is2 = res_place_gc_instrs(Is1, []),
+    Is = res_place_allocate(Anno, Is2),
+
+    %% Add register hints for variables that are defined
+    %% in the (reversed) instruction sequence.
+    {Res,Xs} = reserve_xregs_is(Is, Res0, Xs0, []),
+
+    XsMap = XsMap0#{L=>Xs},
+    reserve_xregs(Ls, Blocks, XsMap, Res);
+reserve_xregs([], _, _, Res) -> Res.
+
+%% Insert explicit 'gc' markers points where there will
+%% be a garbage collection. (Note that the instruction
+%% sequence passed to this function is reversed.)
+
+res_place_gc_instrs([#b_set{op=phi}=I|Is], Acc) ->
+    res_place_gc_instrs(Is, [I|Acc]);
+res_place_gc_instrs([#b_set{op=Op}=I|Is], Acc)
+  when Op =:= call; Op =:= make_fun ->
+    case Acc of
+        [] ->
+            res_place_gc_instrs(Is, [I|Acc]);
+        [GC|_] when GC =:= gc; GC =:= test_heap ->
+            res_place_gc_instrs(Is, [I,gc|Acc]);
+        [_|_] ->
+            res_place_gc_instrs(Is, [I,gc|Acc])
+    end;
+res_place_gc_instrs([#b_set{op=Op,args=Args}=I|Is], Acc0) ->
+    case beam_ssa_codegen:classify_heap_need(Op, Args) of
+        neutral ->
+            case Acc0 of
+                [test_heap|Acc] ->
+                    res_place_gc_instrs(Is, [test_heap,I|Acc]);
+                Acc ->
+                    res_place_gc_instrs(Is, [I|Acc])
+            end;
+        {put,_} ->
+            case Acc0 of
+                [test_heap|Acc] ->
+                    res_place_gc_instrs(Is, [test_heap,I|Acc]);
+                Acc ->
+                    res_place_gc_instrs(Is, [test_heap,I|Acc])
+            end;
+        _ ->
+            res_place_gc_instrs(Is, [gc,I|Acc0])
+    end;
+res_place_gc_instrs([], Acc) ->
+    %% Reverse and replace 'test_heap' markers with 'gc'.
+    %% (The distinction is no longer useful.)
+    res_place_gc_instrs_rev(Acc, []).
+
+res_place_gc_instrs_rev([test_heap|Is], [gc|_]=Acc) ->
+    res_place_gc_instrs_rev(Is, Acc);
+res_place_gc_instrs_rev([test_heap|Is], Acc) ->
+    res_place_gc_instrs_rev(Is, [gc|Acc]);
+res_place_gc_instrs_rev([gc|Is], [gc|_]=Acc) ->
+    res_place_gc_instrs_rev(Is, Acc);
+res_place_gc_instrs_rev([I|Is], Acc) ->
+    res_place_gc_instrs_rev(Is, [I|Acc]);
+res_place_gc_instrs_rev([], Acc) -> Acc.
+
+res_place_allocate(#{yregs:=_}, Is) ->
+    %% There will be an 'allocate' instruction inserted here.
+    Is ++ [gc];
+res_place_allocate(#{}, Is) -> Is.
+
+reserve_xregs_is([gc|Is], Res, Xs0, Used) ->
+    %% At this point, the code generator will place an instruction
+    %% that does a garbage collection. We must prune the remembered
+    %% registers.
+    Xs = res_xregs_prune(Xs0, Used, Res),
+    reserve_xregs_is(Is, Res, Xs, Used);
+reserve_xregs_is([#b_set{op=Op,dst=Dst,args=Args}=I|Is], Res0, Xs0, Used0) ->
+    Res = reserve_xreg(Dst, Xs0, Res0),
+    Used1 = ordsets:union(Used0, beam_ssa:used(I)),
+    Used = ordsets:del_element(Dst, Used1),
+    case Op of
+        call ->
+            Xs = reserve_call_args(tl(Args)),
+            reserve_xregs_is(Is, Res, Xs, Used);
+        make_fun ->
+            Xs = reserve_call_args(tl(Args)),
+            reserve_xregs_is(Is, Res, Xs, Used);
+        _ ->
+            reserve_xregs_is(Is, Res, Xs0, Used)
+    end;
+reserve_xregs_is([], Res, Xs, _Used) ->
+    {Res,Xs}.
+
+%% Pick up register hints from the successors of this blocks.
+reserve_terminator(_L, _Is, #b_br{bool=#b_var{},succ=Succ,fail=?BADARG_BLOCK},
+                   _Blocks, XsMap, _Res) ->
+    %% We know that no variables are used at ?BADARG_BLOCK, so
+    %% any register hints from the success blocks are safe to use.
+    map_get(Succ, XsMap);
+reserve_terminator(L, Is, #b_br{bool=#b_var{},succ=Succ,fail=Fail},
+                   Blocks, XsMap, Res) when Succ =/= Fail ->
+    #{Succ:=SuccBlk,Fail:=FailBlk} = Blocks,
+    case {SuccBlk,FailBlk} of
+        {#b_blk{is=[],last=#b_br{succ=PhiL,fail=PhiL}},
+         #b_blk{is=[],last=#b_br{succ=PhiL,fail=PhiL}}} ->
+            %% Both branches ultimately transfer to the same
+            %% block (via two blocks with no instructions).
+            %% Pick up register hints from the phi nodes
+            %% in the common block.
+            #{PhiL:=#b_blk{is=PhiIs}} = Blocks,
+            Xs = res_xregs_from_phi(PhiIs, Succ, Res, #{}),
+            res_xregs_from_phi(PhiIs, Fail, Res, Xs);
+        {_,_} when Is =/= [] ->
+            case last(Is) of
+                #b_set{op=succeeded,args=[Arg]} ->
+                    %% We know that Arg will not be used at the failure
+                    %% label, so we can pick up register hints from the
+                    %% success label.
+                    Br = #b_br{bool=#b_literal{val=true},succ=Succ,fail=Succ},
+                    case reserve_terminator(L, [], Br, Blocks, XsMap, Res) of
+                        #{Arg:=Reg} -> #{Arg=>Reg};
+                        #{} -> #{}
+                    end;
+                _ ->
+                    %% Register hints from the success block may not
+                    %% be safe at the failure block, and vice versa.
+                    #{}
+            end;
+        {_,_} ->
+            %% Register hints from the success block may not
+            %% be safe at the failure block, and vice versa.
+            #{}
+    end;
+reserve_terminator(L, Is, #b_br{bool=#b_literal{val=true},succ=Succ},
+                   Blocks, XsMap, Res) ->
+    case map_get(Succ, Blocks) of
+        #b_blk{is=[],last=Last} ->
+            reserve_terminator(Succ, Is, Last, Blocks, XsMap, Res);
+        #b_blk{is=[_|_]=PhiIs} ->
+            res_xregs_from_phi(PhiIs, L, Res, #{})
+    end;
+reserve_terminator(_, _, _, _, _, _) -> #{}.
+
+%% Pick up a reservation from a phi node.
+res_xregs_from_phi([#b_set{op=phi,dst=Dst,args=Args}|Is],
+                   Pred, Res, Acc) ->
+    case [V || {#b_var{}=V,L} <- Args, L =:= Pred] of
+        [] ->
+            %% The value of the phi node for this predecessor
+            %% is a literal. Nothing to do here.
+            res_xregs_from_phi(Is, Pred, Res, Acc);
+        [V] ->
+            case Res of
+                #{Dst:={prefer,Reg}} ->
+                    %% Try placing V in the same register as for
+                    %% the phi node.
+                    res_xregs_from_phi(Is, Pred, Res, Acc#{V=>Reg});
+                #{Dst:=_} ->
+                    res_xregs_from_phi(Is, Pred, Res, Acc)
+            end
+    end;
+res_xregs_from_phi(_, _, _, Acc) -> Acc.
+
+reserve_call_args(Args) ->
+    reserve_call_args(Args, 0, #{}).
+
+reserve_call_args([#b_var{}=Var|As], X, Xs) ->
+    reserve_call_args(As, X+1, Xs#{Var=>{x,X}});
+reserve_call_args([#b_literal{}|As], X, Xs) ->
+    reserve_call_args(As, X+1, Xs);
+reserve_call_args([], _, Xs) -> Xs.
+
+reserve_xreg(V, Xs, Res) ->
+    case Res of
+        #{V:=_} ->
+            %% Already reserved (but not as an X register).
+            Res;
+        #{} ->
+            case Xs of
+                #{V:=X} ->
+                    %% Add a hint that this specific X register is
+                    %% preferred, unless it is already in use.
+                    Res#{V=>{prefer,X}};
+                #{} ->
+                    %% Reserve as an X register in general.
+                    Res#{V=>x}
+            end
+    end.
+
+%% res_xregs_prune(PreferredRegs, Used, Res) -> PreferredRegs.
+%%  Prune the list of preferred registers, to make sure that
+%%  there are no "holes" (uninitialized X registers) when
+%%  invoking the garbage collector.
+
+res_xregs_prune(Xs, Used, Res) when map_size(Xs) =/= 0 ->
+    %% The number of safe registers is the number of the X registers
+    %% used after this point. The actual number of safe registers may
+    %% be higher than this number, but this is a conservative safe
+    %% estimate.
+    NumSafe = foldl(fun(V, N) ->
+                            case Res of
+                                #{V:={x,_}} -> N + 1;
+                                #{V:=_} -> N;
+                                #{} -> N + 1
+                            end
+                    end, 0, Used),
+
+    %% Remove unsafe registers from the list of potential
+    %% preferred registers.
+    maps:filter(fun(_, {x,X}) -> X < NumSafe end, Xs);
+res_xregs_prune(Xs, _Used, _Res) -> Xs.
+
+%%%
+%%% Register allocation using linear scan.
+%%%
+
+-record(i,
+        {sort=1 :: instr_number(),
+         reg=none :: i_reg(),
+         pool=x :: pool_id(),
+         var=#b_var{} :: b_var(),
+         rs=[] :: [range()]
+        }).
+
+-record(l,
+        {cur=#i{} :: interval(),
+         unhandled_res=[] :: [interval()],
+         unhandled_any=[] :: [interval()],
+         active=[] :: [interval()],
+         inactive=[] :: [interval()],
+         free=#{} :: #{var_name()=>pool(),
+                       {'next',pool_id()}:=reg_num()},
+         regs=[] :: [{b_var(),ssa_register()}]
+        }).
+
+-type interval() :: #i{}.
+-type i_reg() :: ssa_register() | {'prefer',xreg()} | 'none'.
+-type pool_id() :: 'fr' | 'x' | 'z' | instr_number().
+-type pool() :: ordsets:ordset(ssa_register()).
+
+linear_scan(#st{intervals=Intervals0,res=Res}=St0) ->
+    St = St0#st{intervals=[],res=[]},
+    Free = init_free(maps:to_list(Res)),
+    Intervals1 = [init_interval(Int, Res) || Int <- Intervals0],
+    Intervals = sort(Intervals1),
+    IsReserved = fun(#i{reg=Reg}) ->
+                         case Reg of
+                             none -> false;
+                             {prefer,{_,_}} -> false;
+                             {_,_} -> true
+                         end
+                 end,
+    {UnhandledRes,Unhandled} = partition(IsReserved, Intervals),
+    L = #l{unhandled_res=UnhandledRes,
+           unhandled_any=Unhandled,free=Free},
+    #l{regs=Regs} = do_linear(L),
+    St#st{regs=maps:from_list(Regs)}.
+
+init_interval({V,[{Start,_}|_]=Rs}, Res) ->
+    Info = map_get(V, Res),
+    Pool = case Info of
+               {prefer,{x,_}} -> x;
+               x -> x;
+               {x,_} -> x;
+               {y,Uniq} -> Uniq;
+               {{y,_},Uniq} -> Uniq;
+               z -> z;
+               fr -> fr
+           end,
+    Reg = case Info of
+              {prefer,{x,_}} -> Info;
+              {x,_} -> Info;
+              {{y,_}=Y,_} -> Y;
+              _ -> none
+          end,
+    #i{sort=Start,var=V,reg=Reg,pool=Pool,rs=Rs}.
+
+init_free(Res) ->
+    Free0 = rel2fam([{x,{x,0}}|init_free_1(Res)]),
+    #{x:=Xs0} = Free1 = maps:from_list(Free0),
+    Xs = init_xregs(Xs0),
+    Free = Free1#{x:=Xs},
+    Next = maps:fold(fun(K, V, A) -> [{{next,K},length(V)}|A] end, [], Free),
+    maps:merge(Free, maps:from_list(Next)).
+
+init_free_1([{_,{prefer,{x,_}=Reg}}|Res]) ->
+    [{x,Reg}|init_free_1(Res)];
+init_free_1([{_,{x,_}=Reg}|Res]) ->
+    [{x,Reg}|init_free_1(Res)];
+init_free_1([{_,{y,Uniq}}|Res]) ->
+    [{Uniq,{y,0}}|init_free_1(Res)];
+init_free_1([{_,{{y,_}=Reg,Uniq}}|Res]) ->
+    [{Uniq,Reg}|init_free_1(Res)];
+init_free_1([{_,z}|Res]) ->
+    [{z,{z,0}}|init_free_1(Res)];
+init_free_1([{_,fr}|Res]) ->
+    [{fr,{fr,0}}|init_free_1(Res)];
+init_free_1([{_,x}|Res]) ->
+    init_free_1(Res);
+init_free_1([]) -> [].
+
+%% Make sure that the pool of xregs is contiguous.
+init_xregs([{x,N},{x,M}|Is]) when N+1 =:= M ->
+    [{x,N}|init_xregs([{x,M}|Is])];
+init_xregs([{x,N}|[{x,_}|_]=Is]) ->
+    [{x,N}|init_xregs([{x,N+1}|Is])];
+init_xregs([{x,_}]=Is) -> Is.
+
+do_linear(L0) ->
+    case set_next_current(L0) of
+        done ->
+            L0;
+        L1 ->
+            L2 = expire_active(L1),
+            L3 = check_inactive(L2),
+            Available = collect_available(L3),
+            L4 = select_register(Available, L3),
+            L = make_cur_active(L4),
+            do_linear(L)
+    end.
+
+set_next_current(#l{unhandled_res=[Cur1|T1],
+                    unhandled_any=[Cur2|T2]}=L) ->
+    case {Cur1,Cur2} of
+        {#i{sort=N1},#i{sort=N2}} when N1 < N2 ->
+            L#l{cur=Cur1,unhandled_res=T1};
+        {_,_} ->
+            L#l{cur=Cur2,unhandled_any=T2}
+    end;
+set_next_current(#l{unhandled_res=[],
+                    unhandled_any=[Cur|T]}=L) ->
+    L#l{cur=Cur,unhandled_any=T};
+set_next_current(#l{unhandled_res=[Cur|T],
+                    unhandled_any=[]}=L) ->
+    L#l{cur=Cur,unhandled_res=T};
+set_next_current(#l{unhandled_res=[],unhandled_any=[]}) ->
+    done.
+
+expire_active(#l{cur=#i{sort=CurBegin},active=Act0}=L0) ->
+    {Act,L} = expire_active(Act0, CurBegin, L0, []),
+    L#l{active=Act}.
+
+expire_active([#i{reg=Reg,rs=Rs0}=I|Is], CurBegin, L0, Acc) ->
+    {_,_} = Reg,                                %Assertion.
+    case overlap_status(Rs0, CurBegin) of
+        ends_before_cur ->
+            L = free_reg(I, L0),
+            expire_active(Is, CurBegin, L, Acc);
+        overlapping ->
+            expire_active(Is, CurBegin, L0, [I|Acc]);
+        not_overlapping ->
+            Rs = strip_before_current(Rs0, CurBegin),
+            L1 = free_reg(I, L0),
+            L = L1#l{inactive=[I#i{rs=Rs}|L1#l.inactive]},
+            expire_active(Is, CurBegin, L, Acc)
+    end;
+expire_active([], _CurBegin, L, Acc) ->
+    {Acc,L}.
+
+check_inactive(#l{cur=#i{sort=CurBegin},inactive=InAct0}=L0) ->
+    {InAct,L} = check_inactive(InAct0, CurBegin, L0, []),
+    L#l{inactive=InAct}.
+
+check_inactive([#i{rs=Rs0}=I|Is], CurBegin, L0, Acc) ->
+    case overlap_status(Rs0, CurBegin) of
+        ends_before_cur ->
+            check_inactive(Is, CurBegin, L0, Acc);
+        not_overlapping ->
+            check_inactive(Is, CurBegin, L0, [I|Acc]);
+        overlapping ->
+            Rs = strip_before_current(Rs0, CurBegin),
+            L1 = L0#l{active=[I#i{rs=Rs}|L0#l.active]},
+            L = reserve_reg(I, L1),
+            check_inactive(Is, CurBegin, L, Acc)
+    end;
+check_inactive([], _CurBegin, L, Acc) ->
+    {Acc,L}.
+
+strip_before_current([{_,E}|Rs], CurBegin) when E =< CurBegin ->
+    strip_before_current(Rs, CurBegin);
+strip_before_current(Rs, _CurBegin) -> Rs.
+
+collect_available(#l{cur=#i{reg={prefer,{_,_}=Prefer}}=I}=L) ->
+    %% Use the preferred register if it is available.
+    Avail = collect_available(L#l{cur=I#i{reg=none}}),
+    case member(Prefer, Avail) of
+        true -> [Prefer];
+        false -> Avail
+    end;
+collect_available(#l{cur=#i{reg={_,_}=ReservedReg}}) ->
+    %% Return the already reserved register.
+    [ReservedReg];
+collect_available(#l{unhandled_res=Unhandled,cur=Cur}=L) ->
+    Free = get_pool(Cur, L),
+
+    %% Note that since the live intervals are constructed from
+    %% SSA form, there cannot be any overlap of the current interval
+    %% with any inactive interval. See [3], page 175. Therefore we
+    %% only have check the unhandled intervals for overlap with
+    %% the current interval. As a further optimization, we only need
+    %% to check the intervals that have reserved registers.
+    collect_available(Unhandled, Cur, Free).
+
+collect_available([#i{pool=Pool1}|Is], #i{pool=Pool2}=Cur, Free)
+  when Pool1 =/= Pool2 ->
+    %% Wrong pool. Ignore this interval.
+    collect_available(Is, Cur, Free);
+collect_available([#i{reg={_,_}=Reg}=I|Is], Cur, Free0) ->
+    case overlaps(I, Cur) of
+        true ->
+            Free = ordsets:del_element(Reg, Free0),
+            collect_available(Is, Cur, Free);
+        false ->
+            collect_available(Is, Cur, Free0)
+    end;
+collect_available([], _, Free) -> Free.
+
+select_register([{_,_}=Reg|_], #l{cur=Cur0,regs=Regs}=L) ->
+    Cur = Cur0#i{reg=Reg},
+    reserve_reg(Cur, L#l{cur=Cur,regs=[{Cur#i.var,Reg}|Regs]});
+select_register([], #l{cur=Cur0,regs=Regs}=L0) ->
+    %% Allocate a new register in the pool.
+    {Reg,L1} = get_next_free(Cur0, L0),
+    Cur = Cur0#i{reg=Reg},
+    L = L1#l{cur=Cur,regs=[{Cur#i.var,Reg}|Regs]},
+    reserve_reg(Cur, L).
+
+make_cur_active(#l{cur=Cur,active=Act}=L) ->
+    L#l{active=[Cur|Act]}.
+
+overlaps(#i{rs=Rs1}, #i{rs=Rs2}) ->
+    are_overlapping(Rs1, Rs2).
+
+overlap_status([{S,E}], CurBegin) ->
+    if
+        E =< CurBegin -> ends_before_cur;
+        CurBegin < S -> not_overlapping;
+        true -> overlapping
+    end;
+overlap_status([{S,E}|Rs], CurBegin) ->
+    if
+        E =< CurBegin ->
+            overlap_status(Rs, CurBegin);
+        S =< CurBegin ->
+            overlapping;
+        true ->
+            not_overlapping
+    end.
+
+reserve_reg(#i{reg={_,_}=Reg}=I, L) ->
+    FreeRegs0 = get_pool(I, L),
+    FreeRegs = ordsets:del_element(Reg, FreeRegs0),
+    update_pool(I, FreeRegs, L).
+
+free_reg(#i{reg={_,_}=Reg}=I, L) ->
+    FreeRegs0 = get_pool(I, L),
+    FreeRegs = ordsets:add_element(Reg, FreeRegs0),
+    update_pool(I, FreeRegs, L).
+
+get_pool(#i{pool=Pool}, #l{free=Free}) ->
+    map_get(Pool, Free).
+
+update_pool(#i{pool=Pool}, New, #l{free=Free0}=L) ->
+    Free = Free0#{Pool:=New},
+    L#l{free=Free}.
+
+get_next_free(#i{pool=Pool}, #l{free=Free0}=L0) ->
+    K = {next,Pool},
+    N = map_get(K, Free0),
+    Free = Free0#{K:=N+1},
+    L = L0#l{free=Free},
+    if
+        is_integer(Pool) -> {{y,N},L};
+        is_atom(Pool)    -> {{Pool,N},L}
+    end.
+
+%%%
+%%% Interval utilities.
+%%%
+
+are_overlapping([R|Rs1], Rs2) ->
+    case are_overlapping_1(R, Rs2) of
+        true ->
+            true;
+        false ->
+            are_overlapping(Rs1, Rs2)
+    end;
+are_overlapping([], _) -> false.
+
+are_overlapping_1({_S1,E1}, [{S2,_E2}|_]) when E1 < S2 ->
+    false;
+are_overlapping_1({S1,E1}=R, [{S2,E2}|Rs]) ->
+    (S2 < E1 andalso E2 > S1) orelse are_overlapping_1(R, Rs);
+are_overlapping_1({_,_}, []) -> false.
+
+%%%
+%%% Utilities.
+%%%
+
+%% is_loop_header(L, Blocks) -> false|true.
+%%  Check whether the block is a loop header.
+
+is_loop_header(L, Blocks) ->
+    %% We KNOW that a loop header must start with a peek_message
+    %% instruction.
+    case map_get(L, Blocks) of
+        #b_blk{is=[#b_set{op=peek_message}|_]} -> true;
+        _ -> false
+    end.
+
+rel2fam(S0) ->
+    S1 = sofs:relation(S0),
+    S = sofs:rel2fam(S1),
+    sofs:to_external(S).
+
+split_phis(Is) ->
+    splitwith(fun(#b_set{op=Op}) -> Op =:= phi end, Is).
+
+is_yreg({y,_}) -> true;
+is_yreg({x,_}) -> false;
+is_yreg({z,_}) -> false;
+is_yreg({fr,_}) -> false.
+
+new_vars([Base|Vs0], Count0) ->
+    {V,Count1} = new_var(Base, Count0),
+    {Vs,Count} = new_vars(Vs0, Count1),
+    {[V|Vs],Count};
+new_vars([], Count) -> {[],Count}.
+
+new_var({Base,Int}, Count)  ->
+    true = is_integer(Int),                     %Assertion.
+    {#b_var{name={Base,Count}},Count+1};
+new_var(Base, Count) ->
+    {#b_var{name={Base,Count}},Count+1}.
diff --git a/lib/compiler/src/beam_ssa_recv.erl b/lib/compiler/src/beam_ssa_recv.erl
new file mode 100644
index 0000000000..1e0e1ecac2
--- /dev/null
+++ b/lib/compiler/src/beam_ssa_recv.erl
@@ -0,0 +1,278 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2018. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+-module(beam_ssa_recv).
+-export([module/2]).
+
+%%%
+%%% In code such as:
+%%%
+%%%    Ref = make_ref(),        %Or erlang:monitor(process, Pid)
+%%%      .
+%%%      .
+%%%      .
+%%%    receive
+%%%       {Ref,Reply} -> Reply
+%%%    end.
+%%%
+%%% we know that none of the messages that exist in the message queue
+%%% before the call to make_ref/0 can be matched out in the receive
+%%% statement. Therefore we can avoid going through the entire message
+%%% queue if we introduce two new instructions (here written as
+%%% BIFs in pseudo-Erlang):
+%%%
+%%%    recv_mark(SomeUniqInteger),
+%%%    Ref = make_ref(),
+%%%      .
+%%%      .
+%%%      .
+%%%    recv_set(SomeUniqInteger),
+%%%    receive
+%%%       {Ref,Reply} -> Reply
+%%%    end.
+%%%
+%%% The recv_mark/1 instruction will save the current position and
+%%% SomeUniqInteger in the process context. The recv_set
+%%% instruction will verify that SomeUniqInteger is still stored
+%%% in the process context. If it is, it will set the current pointer
+%%% for the message queue (the next message to be read out) to the
+%%% position that was saved by recv_mark/1.
+%%%
+%%% The remove_message instruction must be modified to invalidate
+%%% the information stored by the previous recv_mark/1, in case there
+%%% is another receive executed between the calls to recv_mark/1 and
+%%% recv_set/1.
+%%%
+%%% We use a reference to a label (i.e. a position in the loaded code)
+%%% as the SomeUniqInteger.
+%%%
+
+-include("beam_ssa.hrl").
+-import(lists, [all/2,reverse/2]).
+
+-spec module(beam_ssa:b_module(), [compile:option()]) ->
+                    {'ok',beam_ssa:b_module()}.
+
+module(#b_module{body=Fs0}=Module, _Opts) ->
+    Fs = [function(F) || F <- Fs0],
+    {ok,Module#b_module{body=Fs}}.
+
+%%%
+%%% Local functions.
+%%%
+
+function(#b_function{anno=Anno,bs=Blocks0}=F) ->
+    try
+        Blocks = opt(Blocks0),
+        F#b_function{bs=Blocks}
+    catch
+        Class:Error:Stack ->
+            #{func_info:={_,Name,Arity}} = Anno,
+            io:fwrite("Function: ~w/~w\n", [Name,Arity]),
+            erlang:raise(Class, Error, Stack)
+    end.
+
+opt(Blocks) ->
+    Linear = beam_ssa:linearize(Blocks),
+    opt(Linear, Blocks, []).
+
+opt([{L,#b_blk{is=[#b_set{op=peek_message}|_]}=Blk0}|Bs], Blocks0, Preds) ->
+    %% Search for a suitable reference creating call in one of the predecessor
+    %% blocks. Whether we find such a call or not, we always clear the
+    %% the list of predecessors to ensure that any nested receive can't
+    %% search above the current receive.
+    case recv_opt(Preds, L, Blocks0) of
+        {yes,Blocks1} ->
+            Blk = beam_ssa:add_anno(recv_set, L, Blk0),
+            Blocks = Blocks1#{L:=Blk},
+            opt(Bs, Blocks, []);
+        no ->
+            opt(Bs, Blocks0, [])
+    end;
+opt([{L,_}|Bs], Blocks, Preds) ->
+    opt(Bs, Blocks, [L|Preds]);
+opt([], Blocks, _) -> Blocks.
+
+recv_opt([L|Ls], RecvLbl, Blocks) ->
+    #b_blk{is=Is0} = Blk0 = map_get(L, Blocks),
+    case recv_opt_is(Is0, RecvLbl, Blocks, []) of
+        {yes,Is} ->
+            Blk = Blk0#b_blk{is=Is},
+            {yes,Blocks#{L:=Blk}};
+        no ->
+            recv_opt(Ls, RecvLbl, Blocks)
+    end;
+recv_opt([], _, _Blocks) -> no.
+
+recv_opt_is([#b_set{op=call}=I0|Is], RecvLbl, Blocks0, Acc) ->
+    case makes_ref(I0, Blocks0) of
+        no ->
+            recv_opt_is(Is, RecvLbl, Blocks0, [I0|Acc]);
+        {yes,Ref} ->
+            case opt_ref_used(RecvLbl, Ref, Blocks0) of
+                false ->
+                    recv_opt_is(Is, RecvLbl, Blocks0, [I0|Acc]);
+                true ->
+                    I = beam_ssa:add_anno(recv_mark, RecvLbl, I0),
+                    {yes,reverse(Acc, [I|Is])}
+            end
+    end;
+recv_opt_is([I|Is], RecvLbl, Blocks, Acc) ->
+    recv_opt_is(Is, RecvLbl, Blocks, [I|Acc]);
+recv_opt_is([], _, _, _) -> no.
+
+makes_ref(#b_set{dst=Dst,args=[Func0|_]}, Blocks) ->
+    Func = case Func0 of
+               #b_remote{mod=#b_literal{val=erlang},
+                         name=#b_literal{val=Name},arity=A0} ->
+                   {Name,A0};
+               _ ->
+                   none
+           end,
+    case Func of
+        {make_ref,0} ->
+            {yes,Dst};
+        {monitor,2} ->
+            {yes,Dst};
+        {spawn_monitor,A} when A =:= 1; A =:= 3 ->
+            ref_in_tuple(Dst, Blocks);
+        _ ->
+            no
+    end.
+
+ref_in_tuple(Tuple, Blocks) ->
+    F = fun(#b_set{op=get_tuple_element,dst=Ref,
+                   args=[#b_var{}=Tup,#b_literal{val=1}]}, no)
+              when Tup =:= Tuple -> {yes,Ref};
+           (_, A) -> A
+        end,
+    beam_ssa:fold_instrs_rpo(F, [0], no, Blocks).
+
+opt_ref_used(RecvLbl, Ref, Blocks) ->
+    Vs = #{Ref=>ref,ref=>Ref,ref_matched=>false},
+    case opt_ref_used_1(RecvLbl, Vs, Blocks) of
+        used -> true;
+        not_used -> false;
+        done -> false
+    end.
+
+opt_ref_used_1(L, Vs0, Blocks) ->
+    #b_blk{is=Is} = Blk = map_get(L, Blocks),
+    case opt_ref_used_is(Is, Vs0) of
+        #{}=Vs ->
+            opt_ref_used_last(Blk, Vs, Blocks);
+        Result ->
+            Result
+    end.
+
+opt_ref_used_is([#b_set{op=peek_message,dst=Msg}|Is], Vs0) ->
+    Vs = Vs0#{Msg=>message},
+    opt_ref_used_is(Is, Vs);
+opt_ref_used_is([#b_set{op={bif,Bif},args=Args,dst=Dst}=I|Is],
+                Vs0) ->
+    S = case Bif of
+            '=:=' -> true;
+            '==' -> true;
+            _ -> none
+        end,
+    case S of
+        none ->
+            Vs = update_vars(I, Vs0),
+            opt_ref_used_is(Is, Vs);
+        Bool when is_boolean(Bool) ->
+            case is_ref_msg_comparison(Args, Vs0) of
+                true ->
+                    Vs = Vs0#{Dst=>{is_ref,Bool}},
+                    opt_ref_used_is(Is, Vs);
+                false ->
+                    opt_ref_used_is(Is, Vs0)
+            end
+    end;
+opt_ref_used_is([#b_set{op=remove_message}|_], Vs) ->
+    case Vs of
+        #{ref_matched:=true} ->
+            used;
+        #{ref_matched:=false} ->
+            not_used
+    end;
+opt_ref_used_is([#b_set{op=recv_next}|_], _Vs) ->
+    done;
+opt_ref_used_is([#b_set{op=wait_timeout}|_], _Vs) ->
+    done;
+opt_ref_used_is([#b_set{op=wait}|_], _Vs) ->
+    done;
+opt_ref_used_is([#b_set{}=I|Is], Vs0) ->
+    Vs = update_vars(I, Vs0),
+    opt_ref_used_is(Is, Vs);
+opt_ref_used_is([], Vs) -> Vs.
+
+opt_ref_used_last(#b_blk{last=Last}=Blk, Vs, Blocks) ->
+    case Last of
+        #b_br{bool=#b_var{}=Bool,succ=Succ,fail=Fail} ->
+            case Vs of
+                #{Bool:={is_ref,Matched}} ->
+                    ref_used_in([{Succ,Vs#{ref_matched:=Matched}},
+                                 {Fail,Vs#{ref_matched:=not Matched}}],
+                                Blocks);
+                #{} ->
+                    ref_used_in([{Succ,Vs},{Fail,Vs}], Blocks)
+            end;
+        _ ->
+            SuccVs = [{Succ,Vs} || Succ <- beam_ssa:successors(Blk)],
+            ref_used_in(SuccVs, Blocks)
+    end.
+
+ref_used_in([{L,Vs0}|Ls], Blocks) ->
+    case opt_ref_used_1(L, Vs0, Blocks) of
+        not_used ->
+            not_used;
+        used ->
+            case ref_used_in(Ls, Blocks) of
+                done -> used;
+                Result -> Result
+            end;
+        done -> ref_used_in(Ls, Blocks)
+    end;
+ref_used_in([], _) -> done.
+
+update_vars(#b_set{args=Args,dst=Dst}, Vs) ->
+    Vars = [V || #b_var{}=V <- Args],
+    All = all(fun(Var) ->
+                      case Vs of
+                          #{Var:=message} -> true;
+                          #{} -> false
+                      end
+              end, Vars),
+    case All of
+        true -> Vs#{Dst=>message};
+        false -> Vs
+    end.
+
+%% is_ref_msg_comparison(Args, Variables) -> true|false.
+%%  Return 'true' if Args denotes a comparison between the
+%%  reference and message or part of the message.
+
+is_ref_msg_comparison([#b_var{}=V1,#b_var{}=V2], Vs) ->
+    case Vs of
+        #{V1:=ref,V2:=message} -> true;
+        #{V1:=message,V2:=ref} -> true;
+        #{} -> false
+    end;
+is_ref_msg_comparison(_, _) -> false.
diff --git a/lib/compiler/src/beam_ssa_share.erl b/lib/compiler/src/beam_ssa_share.erl
new file mode 100644
index 0000000000..426efa2cc9
--- /dev/null
+++ b/lib/compiler/src/beam_ssa_share.erl
@@ -0,0 +1,370 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2018. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+%%
+%% Share code for semantically equivalent blocks referred to
+%% to by `br` and `switch` instructions.
+%%
+%% A similar optimization is done in beam_jump, but doing it here as
+%% well is beneficial as it may enable other optimizations. If there
+%% are many semantically equivalent clauses, this optimization can
+%% substanstially decrease compilation times.
+%%
+%% block/2 is called from the liveness optimization pass in
+%% beam_ssa_opt, as code sharing helps the liveness pass and vice
+%% versa.
+%%
+
+-module(beam_ssa_share).
+-export([module/2,block/2]).
+
+-include("beam_ssa.hrl").
+
+-import(lists, [keyfind/3,reverse/1,sort/1]).
+
+-spec module(beam_ssa:b_module(), [compile:option()]) ->
+                    {'ok',beam_ssa:b_module()}.
+
+module(#b_module{body=Fs0}=Module, _Opts) ->
+    Fs = [function(F) || F <- Fs0],
+    {ok,Module#b_module{body=Fs}}.
+
+-spec block(Blk0, Blocks0) -> Blk when
+      Blk0 :: beam_ssa:b_blk(),
+      Blocks0 :: beam_ssa:block_map(),
+      Blk :: beam_ssa:b_blk().
+
+block(#b_blk{last=Last0}=Blk, Blocks) ->
+    case share_terminator(Last0, Blocks) of
+        none -> Blk;
+        Last -> Blk#b_blk{last=beam_ssa:normalize(Last)}
+    end.
+
+%%%
+%%% Local functions.
+%%%
+
+function(#b_function{anno=Anno,bs=Blocks0}=F) ->
+    try
+        PO = reverse(beam_ssa:rpo(Blocks0)),
+        {Blocks1,Changed} = blocks(PO, Blocks0, false),
+        Blocks = case Changed of
+                     true ->
+                         beam_ssa:trim_unreachable(Blocks1);
+                     false ->
+                         Blocks0
+                 end,
+        F#b_function{bs=Blocks}
+    catch
+        Class:Error:Stack ->
+            #{func_info:={_,Name,Arity}} = Anno,
+            io:fwrite("Function: ~w/~w\n", [Name,Arity]),
+            erlang:raise(Class, Error, Stack)
+    end.
+
+blocks([L|Ls], Blocks, Changed) ->
+    #b_blk{last=Last0} = Blk0 = map_get(L, Blocks),
+    case block(Blk0, Blocks) of
+        #b_blk{last=Last0} ->
+            blocks(Ls, Blocks, Changed);
+        #b_blk{}=Blk ->
+            blocks(Ls, Blocks#{L:=Blk}, true)
+    end;
+blocks([], Blocks, Changed) ->
+    {Blocks,Changed}.
+
+share_terminator(#b_br{bool=#b_var{},succ=Succ0,fail=Fail0}=Br, Blocks) ->
+    {Succ,SuccBlk} = shortcut_nonempty_block(Succ0, Blocks),
+    {Fail,FailBlk} = shortcut_nonempty_block(Fail0, Blocks),
+    case are_equivalent(Succ, SuccBlk, Fail, FailBlk, Blocks) of
+        true ->
+            %% The blocks are semantically equivalent.
+            Br#b_br{succ=Succ,fail=Succ};
+        false ->
+            if
+                Succ =:= Succ0, Fail =:= Fail0 ->
+                    %% None of blocks were cut short.
+                    none;
+                true ->
+                    %% One or both labels were cut short
+                    %% to avoid jumping to an empty block.
+                    Br#b_br{succ=Succ,fail=Fail}
+            end
+    end;
+share_terminator(#b_switch{}=Sw, Blocks) ->
+    share_switch(Sw, Blocks);
+share_terminator(_Last, _Blocks) -> none.
+
+%% Test whether the two blocks are semantically equivalent.  This
+%% function is specially optimized to return `false` as fast as
+%% possible if the blocks are not equivalent, as that is the common
+%% case.
+
+are_equivalent(_Succ, _, ?BADARG_BLOCK, _, _Blocks) ->
+    %% ?BADARG_BLOCK is special. Sharing could be incorrect.
+    false;
+are_equivalent(_Succ, #b_blk{is=Is1,last=#b_ret{arg=RetVal1}=Ret1},
+         _Fail, #b_blk{is=Is2,last=#b_ret{arg=RetVal2}=Ret2}, _Blocks) ->
+    case {RetVal1,RetVal2} of
+        {#b_literal{},#b_literal{}} ->
+            case RetVal1 =:= RetVal2 of
+                true ->
+                    %% The return values are identical literals. We
+                    %% only need to compare the canonicalized bodies.
+                    Can1 = canonical_is(Is1),
+                    Can2 = canonical_is(Is2),
+                    Can1 =:= Can2;
+                false ->
+                    %% Non-equal literals.
+                    false
+            end;
+        {#b_var{},#b_var{}} ->
+            %% The return values are varibles. We must canonicalize
+            %% the blocks (including returns) and compare them.
+            Can1 = canonical_is(Is1 ++ [Ret1]),
+            Can2 = canonical_is(Is2 ++ [Ret2]),
+            Can1 =:= Can2;
+        {_,_} ->
+            %% One literal and one variable.
+            false
+    end;
+are_equivalent(Succ,
+         #b_blk{is=Is1,
+                last=#b_br{bool=#b_literal{val=true},
+                           succ=Target}},
+         Fail,
+         #b_blk{is=Is2,
+                last=#b_br{bool=#b_literal{val=true},
+                           succ=Target}},
+         Blocks) ->
+    %% Both blocks end with an unconditional branch to the
+    %% same target block. If the target block has phi nodes,
+    %% we must pick up the values from the phi nodes and
+    %% compare them.
+    #b_blk{is=Is} = map_get(Target, Blocks),
+    Phis1 = canonical_terminator_phis(Is, Succ),
+    Phis2 = canonical_terminator_phis(Is, Fail),
+    case {Phis1,Phis2} of
+        {[#b_set{args=[#b_literal{}]}|_],_} when Phis1 =/= Phis2 ->
+            %% Different values are used in the phi nodes.
+            false;
+        {_,[#b_set{args=[#b_literal{}]}|_]} when Phis1 =/= Phis2 ->
+            %% Different values are used in the phi nodes.
+            false;
+        {_,_} ->
+            %% The values in the phi nodes are variables or identical
+            %% literals. We must canonicalize the blocks and compare
+            %% them.
+            Can1 = canonical_is(Is1 ++ Phis1),
+            Can2 = canonical_is(Is2 ++ Phis2),
+            Can1 =:= Can2
+    end;
+are_equivalent(Succ0, #b_blk{is=Is1,last=#b_br{bool=#b_var{},fail=Same}},
+         Fail0, #b_blk{is=Is2,last=#b_br{bool=#b_var{},fail=Same}},
+         Blocks) ->
+    %% Two-way branches with identical failure labels. First compare the
+    %% canonicalized bodies of the blocks.
+    case canonical_is(Is1) =:= canonical_is(Is2) of
+        false ->
+            %% Different bodies.
+            false;
+        true ->
+            %% Bodies were equal. That is fairly uncommon, so to keep
+            %% the code simple we will rewrite the `br` to a `switch`
+            %% and let share_switch/2 do the work of following the
+            %% branches.
+            Sw = #b_switch{arg=#b_var{name=not_used},fail=Fail0,
+                           list=[{#b_literal{},Succ0}]},
+            #b_switch{fail=Fail,list=[{_,Succ}]} = share_switch(Sw, Blocks),
+            Fail =:= Succ
+    end;
+are_equivalent(_, _, _, _, _) -> false.
+
+share_switch(#b_switch{fail=Fail0,list=List0}=Sw, Blocks) ->
+    Prep = share_prepare_sw([{value,Fail0}|List0], Blocks, 0, []),
+    Res = do_share_switch(Prep, Blocks, []),
+    [{_,Fail}|List] = [VL || {_,VL} <- sort(Res)],
+    Sw#b_switch{fail=Fail,list=List}.
+
+share_prepare_sw([{V,L0}|T], Blocks, N, Acc) ->
+    {L,_Blk} = shortcut_nonempty_block(L0, Blocks),
+    share_prepare_sw(T, Blocks, N+1, [{{L,#{}},{N,{V,L}}}|Acc]);
+share_prepare_sw([], _, _, Acc) -> Acc.
+
+do_share_switch(Prep, Blocks, Acc) ->
+    Map = share_switch_1(Prep, Blocks, #{}),
+    share_switch_2(maps:values(Map), Blocks, Acc).
+
+share_switch_1([{Next0,Res}|T], Blocks, Map) ->
+    {Can,Next} = canonical_block(Next0, Blocks),
+    case Map of
+        #{Can:=Ls} ->
+            share_switch_1(T, Blocks, Map#{Can:=[{Next,Res}|Ls]});
+        #{} ->
+            share_switch_1(T, Blocks, Map#{Can=>[{Next,Res}]})
+    end;
+share_switch_1([], _Blocks, Map) -> Map.
+
+share_switch_2([[{_,{N,Res}}]|T], Blocks, Acc) ->
+    %% This block is not equivalent to any other block.
+    share_switch_2(T, Blocks, [{N,Res}|Acc]);
+share_switch_2([[{done,{_,{_,Common}}}|_]=Eqs|T], Blocks, Acc0) ->
+    %% Two or more blocks are semantically equivalent, and all blocks
+    %% are either terminated with a `ret` or a `br` to the same target
+    %% block. Replace the labels in the `switch` for all of those
+    %% blocks with the label for the first of the blocks.
+    Acc = [{N,{V,Common}} || {done,{N,{V,_}}} <- Eqs] ++ Acc0,
+    share_switch_2(T, Blocks, Acc);
+share_switch_2([[{_,_}|_]=Prep|T], Blocks, Acc0) ->
+    %% Two or more blocks are semantically equivalent, but they have
+    %% different successful successor blocks. Now we must check
+    %% recursively whether the successor blocks are equivalent too.
+    Acc = do_share_switch(Prep, Blocks, Acc0),
+    share_switch_2(T, Blocks, Acc);
+share_switch_2([], _, Acc) -> Acc.
+
+canonical_block({L,VarMap0}, Blocks) ->
+    #b_blk{is=Is,last=Last0} = map_get(L, Blocks),
+    case canonical_terminator(L, Last0, Blocks) of
+        none ->
+            %% The block has a terminator that we don't handle.
+            {{none,L},done};
+        {Last,done} ->
+            %% The block ends with a `ret` or an unconditional `br` to
+            %% another block.
+            {Can,_VarMap} = canonical_is(Is ++ Last, VarMap0, []),
+            {Can,done};
+        {Last,Next} ->
+            %% The block ends with a conditional branch.
+            {Can,VarMap} = canonical_is(Is ++ Last, VarMap0, []),
+            {Can,{Next,VarMap}}
+    end.
+
+%% Translate a sequence of instructions to a canonical representation. If the
+%% canonical representation of two blocks compare equal, the blocks are
+%% semantically equivalent. The following translations are done:
+%%
+%%    * Variables defined in the instruction sequence are replaced with
+%%    {var,0}, {var,1}, and so on. Free variables are not changed.
+%%
+%%    * `location` annotations that would produce a `line` instruction are
+%%    kept. All other annotations are cleared.
+%%
+%%    * Instructions are repackaged into tuples instead of into the
+%%    usual records. The main reason is to avoid violating the types for
+%%    the SSA records. We can simplify things a little by linking the
+%%    instructions directly instead of putting them into a list.
+
+canonical_is(Is) ->
+    {Can,_} = canonical_is(Is, #{}, []),
+    Can.
+
+canonical_is([#b_set{op=Op,dst=Dst,args=Args0}=I|Is], VarMap0, Acc) ->
+    Args = [canonical_arg(Arg, VarMap0) || Arg <-Args0],
+    Var = {var,map_size(VarMap0)},
+    VarMap = VarMap0#{Dst=>Var},
+    LineAnno = case Op of
+                   bs_match ->
+                       %% The location annotation for a bs_match instruction
+                       %% is only used in warnings, never to emit a `line`
+                       %% instruction. Therefore, it should not be included.
+                       [];
+                   _ ->
+                       %% The location annotation will be used in a `line`
+                       %% instruction. It must be included.
+                       beam_ssa:get_anno(location, I, none)
+               end,
+    canonical_is(Is, VarMap, {Op,LineAnno,Var,Args,Acc});
+canonical_is([#b_ret{arg=Arg}], VarMap, Acc0) ->
+    Acc1 = case Acc0 of
+               {call,_Anno,Var,[#b_local{}|_]=Args,PrevAcc} ->
+                   %% This is a tail-recursive call to a local function.
+                   %% There will be no line instruction generated;
+                   %% thus, the annotation is not significant.
+                   {call,[],Var,Args,PrevAcc};
+               _ ->
+                   Acc0
+           end,
+    {{ret,canonical_arg(Arg, VarMap),Acc1},VarMap};
+canonical_is([#b_br{bool=#b_var{},fail=Fail}], VarMap, Acc) ->
+    {{br,succ,Fail,Acc},VarMap};
+canonical_is([#b_br{succ=Succ}], VarMap, Acc) ->
+    {{br,Succ,Acc},VarMap};
+canonical_is([], VarMap, Acc) ->
+    {Acc,VarMap}.
+
+canonical_terminator(_L, #b_ret{}=Ret, _Blocks) ->
+    {[Ret],done};
+canonical_terminator(L, #b_br{bool=#b_literal{val=true},succ=Succ}=Br, Blocks) ->
+    #b_blk{is=Is} = map_get(Succ, Blocks),
+    case canonical_terminator_phis(Is, L) of
+        [] ->
+            {[],Succ};
+        [_|_]=Phis ->
+            {Phis ++ [Br],done}
+    end;
+canonical_terminator(_L, #b_br{bool=#b_var{},succ=Succ}=Br, _Blocks) ->
+    {[Br],Succ};
+canonical_terminator(_, _, _) -> none.
+
+canonical_terminator_phis([#b_set{op=phi,args=PhiArgs}=Phi|Is], L) ->
+    {Value,L} = keyfind(L, 2, PhiArgs),
+    [Phi#b_set{op=copy,args=[Value]}|canonical_terminator_phis(Is, L)];
+canonical_terminator_phis([#b_set{op=peek_message}=I|_], L) ->
+    %% We could get stuck into an infinite loop if we allowed the
+    %% comparisons to continue into this block. Force an unequal
+    %% compare with all other predecessors of this block.
+    [I#b_set{op=copy,args=[#b_literal{val=L}]}];
+canonical_terminator_phis(_, _) -> [].
+
+canonical_arg(#b_var{}=Var, VarMap) ->
+    case VarMap of
+        #{Var:=CanonicalVar} ->
+            CanonicalVar;
+        #{} ->
+            Var
+    end;
+canonical_arg(#b_remote{mod=Mod,name=Name}, VarMap) ->
+    {remote,canonical_arg(Mod, VarMap),
+     canonical_arg(Name, VarMap)};
+canonical_arg(Other, _VarMap) -> Other.
+
+%% Shortcut branches to empty blocks if safe.
+
+shortcut_nonempty_block(L, Blocks) ->
+    case map_get(L, Blocks) of
+        #b_blk{is=[],last=#b_br{bool=#b_literal{val=true},succ=Succ}}=Blk ->
+            %% This block is empty.
+            case is_forbidden(Succ, Blocks) of
+                false ->
+                    shortcut_nonempty_block(Succ, Blocks);
+                true ->
+                    {L,Blk}
+            end;
+        #b_blk{}=Blk ->
+            {L,Blk}
+    end.
+
+is_forbidden(L, Blocks) ->
+    case map_get(L, Blocks) of
+        #b_blk{is=[#b_set{op=phi}|_]} -> true;
+        #b_blk{is=[#b_set{op=peek_message}|_]} -> true;
+        #b_blk{} -> false
+    end.
diff --git a/lib/compiler/src/beam_ssa_type.erl b/lib/compiler/src/beam_ssa_type.erl
new file mode 100644
index 0000000000..06b42f1928
--- /dev/null
+++ b/lib/compiler/src/beam_ssa_type.erl
@@ -0,0 +1,1956 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2018. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+-module(beam_ssa_type).
+-export([opt_start/4, opt_continue/4, opt_finish/3]).
+
+-include("beam_ssa_opt.hrl").
+-import(lists, [all/2,any/2,droplast/1,foldl/3,last/1,member/2,
+                keyfind/3,partition/2,reverse/1,reverse/2,
+                seq/2,sort/1,split/2]).
+
+-define(UNICODE_INT, #t_integer{elements={0,16#10FFFF}}).
+
+-record(d,
+        {ds :: #{beam_ssa:b_var():=beam_ssa:b_set()},
+         ls :: #{beam_ssa:label():=type_db()},
+         once :: cerl_sets:set(beam_ssa:b_var()),
+         func_id :: func_id(),
+         func_db :: func_info_db(),
+         sub = #{} :: #{beam_ssa:b_var():=beam_ssa:value()},
+         ret_type = [] :: [type()]}).
+
+-define(ATOM_SET_SIZE, 5).
+
+%% Records that represent type information.
+-record(t_atom, {elements=any :: 'any' | [atom()]}).
+-record(t_integer, {elements=any :: 'any' | {integer(),integer()}}).
+-record(t_bs_match, {type :: type()}).
+-record(t_tuple, {size=0 :: integer(),
+                  exact=false :: boolean(),
+                  %% Known element types (1-based index), unknown elements are
+                  %% are assumed to be 'any'.
+                  elements=#{} :: #{ non_neg_integer() => type() }}).
+
+-type type() :: 'any' | 'none' |
+                #t_atom{} | #t_integer{} | #t_bs_match{} | #t_tuple{} |
+                {'binary',pos_integer()} | 'cons' | 'float' | 'list' | 'map' | 'nil' | 'number'.
+-type type_db() :: #{beam_ssa:var_name():=type()}.
+
+-spec opt_start(Linear, Args, Anno, FuncDb) -> {Linear, FuncDb} when
+      Linear :: [{non_neg_integer(), beam_ssa:b_blk()}],
+      Args :: [beam_ssa:b_var()],
+      Anno :: beam_ssa:anno(),
+      FuncDb :: func_info_db().
+opt_start(Linear, Args, Anno, FuncDb) ->
+    %% This is the first run through the module, so our arg_types can be
+    %% incomplete as we may not have visited all call sites at least once.
+    Ts = maps:from_list([{V,any} || #b_var{}=V <- Args]),
+    opt_continue_1(Linear, Args, get_func_id(Anno), Ts, FuncDb).
+
+-spec opt_continue(Linear, Args, Anno, FuncDb) -> {Linear, FuncDb} when
+      Linear :: [{non_neg_integer(), beam_ssa:b_blk()}],
+      Args :: [beam_ssa:b_var()],
+      Anno :: beam_ssa:anno(),
+      FuncDb :: func_info_db().
+opt_continue(Linear, Args, Anno, FuncDb) ->
+    Id = get_func_id(Anno),
+    case FuncDb of
+        #{ Id := #func_info{exported=false,arg_types=ArgTypes} } ->
+            %% This is a local function and we're guaranteed to have visited
+            %% every call site at least once, so we know that the parameter
+            %% types are at least as narrow as the join of all argument types.
+            Ts = join_arg_types(Args, ArgTypes, Anno),
+            opt_continue_1(Linear, Args, Id, Ts, FuncDb);
+        #{} ->
+            %% We can't infer the parameter types of exported functions, nor
+            %% the ones where module-level optimization is disabled, but
+            %% running the pass again could still help other functions.
+            Ts = maps:from_list([{V,any} || #b_var{}=V <- Args]),
+            opt_continue_1(Linear, Args, Id, Ts, FuncDb)
+    end.
+
+join_arg_types(Args, ArgTypes, Anno) ->
+    %% We suppress type optimization for parameters that have already been
+    %% optimized by another pass, as they may have done things we have no idea
+    %% how to interpret and running them over could generate incorrect code.
+    ParamTypes = maps:get(parameter_type_info, Anno, #{}),
+    Ts0 = join_arg_types_1(Args, ArgTypes, #{}),
+    maps:fold(fun(Arg, _V, Ts) ->
+                      maps:put(Arg, any, Ts)
+              end, Ts0, ParamTypes).
+
+join_arg_types_1([Arg | Args], [TM | TMs], Ts) when map_size(TM) =/= 0 ->
+    join_arg_types_1(Args, TMs, Ts#{ Arg => join(maps:values(TM))});
+join_arg_types_1([Arg | Args], [_TM | TMs], Ts) ->
+    join_arg_types_1(Args, TMs, Ts#{ Arg => any });
+join_arg_types_1([], [], Ts) ->
+    Ts.
+
+-spec opt_continue_1(Linear, Args, Id, Ts, FuncDb) -> Result when
+      Linear :: [{non_neg_integer(), beam_ssa:b_blk()}],
+      Args :: [beam_ssa:b_var()],
+      Id :: func_id(),
+      Ts :: type_db(),
+      FuncDb :: func_info_db(),
+      Result :: {Linear, FuncDb}.
+opt_continue_1(Linear0, Args, Id, Ts, FuncDb0) ->
+    UsedOnce = used_once(Linear0, Args),
+    FakeCall = #b_set{op=call,args=[#b_remote{mod=#b_literal{val=unknown},
+                                              name=#b_literal{val=unknown},
+                                              arity=0}]},
+    Defs = maps:from_list([{Var,FakeCall#b_set{dst=Var}} ||
+                              #b_var{}=Var <- Args]),
+
+    D = #d{ func_db=FuncDb0,
+            func_id=Id,
+            ds=Defs,
+            ls=#{0=>Ts,?BADARG_BLOCK=>#{}},
+            once=UsedOnce },
+
+    {Linear, FuncDb, NewRet} = opt(Linear0, D, []),
+
+    case FuncDb of
+        #{ Id := Entry0 } ->
+            Entry = Entry0#func_info{ret_type=NewRet},
+            {Linear, FuncDb#{ Id := Entry }};
+        #{} ->
+            %% Module-level optimizations have been turned off for this
+            %% function.
+            {Linear, FuncDb}
+    end.
+
+-spec opt_finish(Args, Anno, FuncDb) -> {Anno, FuncDb} when
+      Args :: [beam_ssa:b_var()],
+      Anno :: beam_ssa:anno(),
+      FuncDb :: func_info_db().
+opt_finish(Args, Anno, FuncDb) ->
+    Id = get_func_id(Anno),
+    case FuncDb of
+        #{ Id := #func_info{exported=false,arg_types=ArgTypes} } ->
+            ParamInfo0 = maps:get(parameter_type_info, Anno, #{}),
+            ParamInfo = opt_finish_1(Args, ArgTypes, ParamInfo0),
+            {Anno#{ parameter_type_info => ParamInfo }, FuncDb};
+        #{} ->
+            {Anno, FuncDb}
+    end.
+
+opt_finish_1([Arg | Args], [TypeMap | TypeMaps], ParamInfo)
+  when is_map_key(Arg, ParamInfo); %% See join_arg_types/3
+       map_size(TypeMap) =:= 0 ->
+    opt_finish_1(Args, TypeMaps, ParamInfo);
+opt_finish_1([Arg | Args], [TypeMap | TypeMaps], ParamInfo0) ->
+    case join(maps:values(TypeMap)) of
+        any ->
+            opt_finish_1(Args, TypeMaps, ParamInfo0);
+        JoinedType ->
+            JoinedType = verified_type(JoinedType),
+            ParamInfo = ParamInfo0#{ Arg => validator_anno(JoinedType) },
+            opt_finish_1(Args, TypeMaps, ParamInfo)
+    end;
+opt_finish_1([], [], ParamInfo) ->
+    ParamInfo.
+
+validator_anno(#t_tuple{size=Size,exact=Exact,elements=Elements0}) ->
+    Elements = maps:fold(fun(Index, Type, Acc) ->
+                                 Key = beam_validator:type_anno(integer, Index),
+                                 Acc#{ Key => validator_anno(Type) }
+                         end, #{}, Elements0),
+    beam_validator:type_anno(tuple, Size, Exact, Elements);
+validator_anno(#t_integer{elements={Same,Same}}) ->
+    beam_validator:type_anno(integer, Same);
+validator_anno(#t_integer{}) ->
+    beam_validator:type_anno(integer);
+validator_anno(float) ->
+    beam_validator:type_anno(float);
+validator_anno(#t_atom{elements=[Val]}) ->
+    beam_validator:type_anno(atom, Val);
+validator_anno(#t_atom{}=A) ->
+    case t_is_boolean(A) of
+        true -> beam_validator:type_anno(bool);
+        false -> beam_validator:type_anno(atom)
+    end;
+validator_anno(T) ->
+    beam_validator:type_anno(T).
+
+get_func_id(Anno) ->
+    #{func_info:={_Mod, Name, Arity}} = Anno,
+    #b_local{name=#b_literal{val=Name}, arity=Arity}.
+
+opt([{L,Blk}|Bs], #d{ls=Ls}=D, Acc) ->
+    case Ls of
+        #{L:=Ts} ->
+            opt_1(L, Blk, Bs, Ts, D, Acc);
+        #{} ->
+            %% This block is never reached. Discard it.
+            opt(Bs, D, Acc)
+    end;
+opt([], D, Acc) ->
+    #d{func_db=FuncDb,ret_type=NewRet} = D,
+    {reverse(Acc), FuncDb, NewRet}.
+
+opt_1(L, #b_blk{is=Is0,last=Last0}=Blk0, Bs, Ts0,
+      #d{ds=Ds0,sub=Sub0,func_db=Fdb0}=D0, Acc) ->
+    case opt_is(Is0, Ts0, Ds0, Fdb0, D0, Sub0, []) of
+        {Is,Ts,Ds,Fdb,Sub} ->
+            D1 = D0#d{ds=Ds,sub=Sub,func_db=Fdb},
+            Last1 = simplify_terminator(Last0, Sub, Ts, Ds),
+            Last = opt_terminator(Last1, Ts, Ds),
+            D = update_successors(Last, Ts, D1),
+            Blk = Blk0#b_blk{is=Is,last=Last},
+            opt(Bs, D, [{L,Blk}|Acc]);
+        {no_return,Ret,Is,Ds,Fdb,Sub} ->
+            %% This call will never reach the successor block.
+            %% Rewrite the terminator to a 'ret', and remove
+            %% all type information for this label. That can
+            %% potentially narrow the type of the phi node
+            %% in the former successor.
+            Ls = maps:remove(L, D0#d.ls),
+            RetType = join([none|D0#d.ret_type]),
+            D = D0#d{ds=Ds,ls=Ls,sub=Sub,
+                     func_db=Fdb,ret_type=[RetType]},
+            Blk = Blk0#b_blk{is=Is,last=Ret},
+            opt(Bs, D, [{L,Blk}|Acc])
+    end.
+
+simplify_terminator(#b_br{bool=Bool}=Br, Sub, Ts, _Ds) ->
+    Br#b_br{bool=simplify_arg(Bool, Sub, Ts)};
+simplify_terminator(#b_switch{arg=Arg}=Sw, Sub, Ts, _Ds) ->
+    Sw#b_switch{arg=simplify_arg(Arg, Sub, Ts)};
+simplify_terminator(#b_ret{arg=Arg}=Ret, Sub, Ts, Ds) ->
+    %% Reducing the result of a call to a literal (fairly common for 'ok')
+    %% breaks tail call optimization.
+    case Ds of
+        #{ Arg := #b_set{op=call}} -> Ret;
+        #{} -> Ret#b_ret{arg=simplify_arg(Arg, Sub, Ts)}
+    end.
+
+opt_is([#b_set{op=phi,dst=Dst,args=Args0}=I0|Is],
+       Ts0, Ds0, Fdb, #d{ls=Ls}=D, Sub0, Acc) ->
+    %% Simplify the phi node by removing all predecessor blocks that no
+    %% longer exists or no longer branches to this block.
+    Args = [{simplify_arg(Arg, Sub0, Ts0),From} ||
+               {Arg,From} <- Args0, maps:is_key(From, Ls)],
+    case all_same(Args) of
+        true ->
+            %% Eliminate the phi node if there is just one source
+            %% value or if the values are identical.
+            [{Val,_}|_] = Args,
+            Sub = Sub0#{Dst=>Val},
+            opt_is(Is, Ts0, Ds0, Fdb, D, Sub, Acc);
+        false ->
+            I = I0#b_set{args=Args},
+            Ts = update_types(I, Ts0, Ds0),
+            Ds = Ds0#{Dst=>I},
+            opt_is(Is, Ts, Ds, Fdb, D, Sub0, [I|Acc])
+    end;
+opt_is([#b_set{op=call,args=Args0,dst=Dst}=I0|Is],
+       Ts0, Ds0, Fdb0, D, Sub0, Acc) ->
+    Args = simplify_args(Args0, Sub0, Ts0),
+    I1 = beam_ssa:normalize(I0#b_set{args=Args}),
+    {Ts1,Ds,Fdb,I2} = opt_call(I1, D, Ts0, Ds0, Fdb0),
+    case {map_get(Dst, Ts1),Is} of
+        {Type,[#b_set{op=succeeded}]} when Type =/= none ->
+            %% This call instruction is inside a try/catch
+            %% block. Don't attempt to simplify it.
+            opt_is(Is, Ts1, Ds, Fdb, D, Sub0, [I2|Acc]);
+        {none,[#b_set{op=succeeded}]} ->
+            %% This call instruction is inside a try/catch
+            %% block, but we know it will never return and
+            %% later optimizations may try to exploit that.
+            %%
+            %% For example, if we have an expression that
+            %% either returns this call or a tuple, we know
+            %% that the expression always returns a tuple
+            %% and can turn a later element/3 into
+            %% get_tuple_element.
+            %%
+            %% This is sound but difficult to validate in a
+            %% meaningful way as try/catch currently forces
+            %% us to maintain the illusion that the success
+            %% block is reachable even when its not, so we
+            %% disable the optimization to keep things
+            %% simple.
+            Ts = Ts1#{ Dst := any },
+            opt_is(Is, Ts, Ds, Fdb, D, Sub0, [I2|Acc]);
+        {none,_} ->
+            %% This call never returns. The rest of the
+            %% instructions will not be executed.
+            Ret = #b_ret{arg=Dst},
+            {no_return,Ret,reverse(Acc, [I2]),Ds,Fdb,Sub0};
+        {_,_} ->
+            case simplify_call(I2) of
+                #b_set{}=I ->
+                    opt_is(Is, Ts1, Ds, Fdb, D, Sub0, [I|Acc]);
+                #b_literal{}=Lit ->
+                    Sub = Sub0#{Dst=>Lit},
+                    Ts = maps:remove(Dst, Ts1),
+                    opt_is(Is, Ts, Ds0, Fdb, D, Sub, Acc);
+                #b_var{}=Var ->
+                    Ts = maps:remove(Dst, Ts1),
+                    Sub = Sub0#{Dst=>Var},
+                    opt_is(Is, Ts, Ds0, Fdb, D, Sub, Acc)
+            end
+    end;
+opt_is([#b_set{op=succeeded,args=[Arg],dst=Dst}=I],
+       Ts0, Ds0, Fdb, D, Sub0, Acc) ->
+    case Ds0 of
+        #{ Arg := #b_set{op=call} } ->
+            %% The success check of a call is part of exception handling and
+            %% must not be optimized away. We still have to update its type
+            %% though.
+            Ts = update_types(I, Ts0, Ds0),
+            Ds = Ds0#{Dst=>I},
+
+            opt_is([], Ts, Ds, Fdb, D, Sub0, [I|Acc]);
+        #{} ->
+            Args = simplify_args([Arg], Sub0, Ts0),
+            Type = type(succeeded, Args, Ts0, Ds0),
+            case get_literal_from_type(Type) of
+                #b_literal{}=Lit ->
+                    Sub = Sub0#{Dst=>Lit},
+                    opt_is([], Ts0, Ds0, Fdb, D, Sub, Acc);
+                none ->
+                    Ts = Ts0#{Dst=>Type},
+                    Ds = Ds0#{Dst=>I},
+                    opt_is([], Ts, Ds, Fdb, D, Sub0, [I|Acc])
+            end
+    end;
+opt_is([#b_set{args=Args0,dst=Dst}=I0|Is],
+       Ts0, Ds0, Fdb, D, Sub0, Acc) ->
+    Args = simplify_args(Args0, Sub0, Ts0),
+    I1 = beam_ssa:normalize(I0#b_set{args=Args}),
+    case simplify(I1, Ts0) of
+        #b_set{}=I2 ->
+            I = beam_ssa:normalize(I2),
+            Ts = update_types(I, Ts0, Ds0),
+            Ds = Ds0#{Dst=>I},
+            opt_is(Is, Ts, Ds, Fdb, D, Sub0, [I|Acc]);
+        #b_literal{}=Lit ->
+            Sub = Sub0#{Dst=>Lit},
+            opt_is(Is, Ts0, Ds0, Fdb, D, Sub, Acc);
+        #b_var{}=Var ->
+            case Is of
+                [#b_set{op=succeeded,dst=SuccDst,args=[Dst]}] ->
+                    %% We must remove this 'succeeded' instruction.
+                    Sub = Sub0#{Dst=>Var,SuccDst=>#b_literal{val=true}},
+                    opt_is([], Ts0, Ds0, Fdb, D, Sub, Acc);
+                _ ->
+                    Sub = Sub0#{Dst=>Var},
+                    opt_is(Is, Ts0, Ds0, Fdb, D, Sub, Acc)
+            end
+    end;
+opt_is([], Ts, Ds, Fdb, _D, Sub, Acc) ->
+    {reverse(Acc), Ts, Ds, Fdb, Sub}.
+
+simplify_call(#b_set{op=call,args=[#b_remote{}=Rem|Args]}=I) ->
+    case Rem of
+        #b_remote{mod=#b_literal{val=Mod},
+                  name=#b_literal{val=Name}} ->
+            case erl_bifs:is_pure(Mod, Name, length(Args)) of
+                true ->
+                    simplify_remote_call(Mod, Name, Args, I);
+                false ->
+                    I
+            end;
+         #b_remote{} ->
+            I
+    end;
+simplify_call(I) -> I.
+
+%% Simplify a remote call to a pure BIF.
+simplify_remote_call(erlang, '++', [#b_literal{val=[]},Tl], _I) ->
+    Tl;
+simplify_remote_call(erlang, setelement,
+                     [#b_literal{val=Pos},
+                      #b_literal{val=Tuple},
+                      #b_var{}=Value], I)
+  when is_integer(Pos), 1 =< Pos, Pos =< tuple_size(Tuple) ->
+    %% Position is a literal integer and the shape of the
+    %% tuple is known.
+    Els0 = [#b_literal{val=El} || El <- tuple_to_list(Tuple)],
+    {Bef,[_|Aft]} = split(Pos - 1, Els0),
+    Els = Bef ++ [Value|Aft],
+    I#b_set{op=put_tuple,args=Els};
+simplify_remote_call(Mod, Name, Args0, I) ->
+    case make_literal_list(Args0) of
+        none ->
+            I;
+        Args ->
+            %% The arguments are literals. Try to evaluate the BIF.
+            try apply(Mod, Name, Args) of
+                Val ->
+                    case cerl:is_literal_term(Val) of
+                        true ->
+                            #b_literal{val=Val};
+                        false ->
+                            %% The value can't be expressed as a literal
+                            %% (e.g. a pid).
+                            I
+                    end
+            catch
+                _:_ ->
+                    %% Failed. Don't bother trying to optimize
+                    %% the call.
+                    I
+            end
+    end.
+
+opt_call(#b_set{dst=Dst,args=[#b_local{}=Callee|Args]}=I0, D, Ts0, Ds0, Fdb0) ->
+    {Ts, Ds, I} = opt_local_call(I0, Ts0, Ds0, Fdb0),
+    case Fdb0 of
+        #{ Callee := #func_info{exported=false,arg_types=ArgTypes0}=Info } ->
+            %% Update the argument types of *this exact call*, the types
+            %% will be joined later when the callee is optimized.
+            CallId = {D#d.func_id, Dst},
+            ArgTypes = update_arg_types(Args, ArgTypes0, CallId, Ts0),
+
+            Fdb = Fdb0#{ Callee => Info#func_info{arg_types=ArgTypes} },
+            {Ts, Ds, Fdb, I};
+        #{} ->
+            %% We can't narrow the argument types of exported functions as they
+            %% can receive anything as part of an external call.
+            {Ts, Ds, Fdb0, I}
+    end;
+opt_call(#b_set{dst=Dst}=I, _D, Ts0, Ds0, Fdb) ->
+    Ts = update_types(I, Ts0, Ds0),
+    Ds = Ds0#{ Dst => I },
+    {Ts, Ds, Fdb, I}.
+
+opt_local_call(#b_set{dst=Dst,args=[Id|_]}=I0, Ts0, Ds0, Fdb) ->
+    Type = case Fdb of
+               #{ Id := #func_info{ret_type=[T]} } -> T;
+               #{} -> any
+           end,
+    I = case Type of
+            any -> I0;
+            none -> I0;
+            _ -> beam_ssa:add_anno(result_type, validator_anno(Type), I0)
+        end,
+    Ts = Ts0#{ Dst => Type },
+    Ds = Ds0#{ Dst => I },
+    {Ts, Ds, I}.
+
+update_arg_types([Arg | Args], [TypeMap0 | TypeMaps], CallId, Ts) ->
+    %% Match contexts are treated as bitstrings when optimizing arguments, as
+    %% we don't yet support removing the "bs_start_match3" instruction.
+    NewType = case get_type(Arg, Ts) of
+                  #t_bs_match{} -> {binary, 1};
+                  Type -> Type
+              end,
+    TypeMap = TypeMap0#{ CallId => NewType },
+    [TypeMap | update_arg_types(Args, TypeMaps, CallId, Ts)];
+update_arg_types([], [], _CallId, _Ts) ->
+    [].
+
+simplify(#b_set{op={bif,'and'},args=Args}=I, Ts) ->
+    case is_safe_bool_op(Args, Ts) of
+        true ->
+            case Args of
+                [_,#b_literal{val=false}=Res] -> Res;
+                [Res,#b_literal{val=true}] -> Res;
+                _ -> eval_bif(I, Ts)
+            end;
+        false ->
+            I
+    end;
+simplify(#b_set{op={bif,'or'},args=Args}=I, Ts) ->
+    case is_safe_bool_op(Args, Ts) of
+        true ->
+            case Args of
+                [Res,#b_literal{val=false}] -> Res;
+                [_,#b_literal{val=true}=Res] -> Res;
+                _ -> eval_bif(I, Ts)
+            end;
+        false ->
+            I
+    end;
+simplify(#b_set{op={bif,element},args=[#b_literal{val=Index},Tuple]}=I0, Ts) ->
+    case t_tuple_size(get_type(Tuple, Ts)) of
+        {_,Size} when is_integer(Index), 1 =< Index, Index =< Size ->
+            I = I0#b_set{op=get_tuple_element,
+                         args=[Tuple,#b_literal{val=Index-1}]},
+            simplify(I, Ts);
+        _ ->
+            eval_bif(I0, Ts)
+    end;
+simplify(#b_set{op={bif,hd},args=[List]}=I, Ts) ->
+    case get_type(List, Ts) of
+        cons ->
+            I#b_set{op=get_hd};
+        _ ->
+            eval_bif(I, Ts)
+    end;
+simplify(#b_set{op={bif,tl},args=[List]}=I, Ts) ->
+    case get_type(List, Ts) of
+        cons ->
+            I#b_set{op=get_tl};
+        _ ->
+            eval_bif(I, Ts)
+    end;
+simplify(#b_set{op={bif,size},args=[Term]}=I, Ts) ->
+    case get_type(Term, Ts) of
+        #t_tuple{} ->
+            simplify(I#b_set{op={bif,tuple_size}}, Ts);
+        _ ->
+            eval_bif(I, Ts)
+    end;
+simplify(#b_set{op={bif,tuple_size},args=[Term]}=I, Ts) ->
+    case get_type(Term, Ts) of
+        #t_tuple{size=Size,exact=true} ->
+            #b_literal{val=Size};
+        _ ->
+            I
+    end;
+simplify(#b_set{op={bif,'=='},args=Args}=I, Ts) ->
+    Types = get_types(Args, Ts),
+    EqEq = case {meet(Types),join(Types)} of
+               {none,any} -> true;
+               {#t_integer{},#t_integer{}} -> true;
+               {float,float} -> true;
+               {{binary,_},_} -> true;
+               {#t_atom{},_} -> true;
+               {_,_} -> false
+           end,
+    case EqEq of
+        true ->
+            simplify(I#b_set{op={bif,'=:='}}, Ts);
+        false ->
+            eval_bif(I, Ts)
+    end;
+simplify(#b_set{op={bif,'=:='},args=[Same,Same]}, _Ts) ->
+    #b_literal{val=true};
+simplify(#b_set{op={bif,'=:='},args=[A1,_A2]=Args}=I, Ts) ->
+    [T1,T2] = get_types(Args, Ts),
+    case meet(T1, T2) of
+        none ->
+            #b_literal{val=false};
+        _ ->
+            case {t_is_boolean(T1),T2} of
+                {true,#t_atom{elements=[true]}} ->
+                    %% Bool =:= true  ==>  Bool
+                    A1;
+                {_,_} ->
+                    eval_bif(I, Ts)
+            end
+    end;
+simplify(#b_set{op={bif,Op},args=Args}=I, Ts) ->
+    Types = get_types(Args, Ts),
+    case is_float_op(Op, Types) of
+        false ->
+            eval_bif(I, Ts);
+        true ->
+            AnnoArgs = [anno_float_arg(A) || A <- Types],
+            eval_bif(beam_ssa:add_anno(float_op, AnnoArgs, I), Ts)
+    end;
+simplify(#b_set{op=get_tuple_element,args=[Tuple,#b_literal{val=N}]}=I, Ts) ->
+    case get_type(Tuple, Ts) of
+        #t_tuple{size=Size,elements=Es} when Size > N ->
+            ElemType = get_element_type(N + 1, Es),
+            case get_literal_from_type(ElemType) of
+                #b_literal{}=Lit -> Lit;
+                none -> I
+            end;
+        none ->
+            %% Will never be executed because of type conflict.
+            %% #b_literal{val=ignored};
+            I
+    end;
+simplify(#b_set{op=is_nonempty_list,args=[Src]}=I, Ts) ->
+    case get_type(Src, Ts) of
+        any ->  I;
+        list -> I;
+        cons -> #b_literal{val=true};
+        _ ->    #b_literal{val=false}
+    end;
+simplify(#b_set{op=is_tagged_tuple,
+                args=[Src,#b_literal{val=Size},#b_literal{}=Tag]}=I, Ts) ->
+    simplify_is_record(I, get_type(Src, Ts), Size, Tag, Ts);
+simplify(#b_set{op=put_list,args=[#b_literal{val=H},
+                                  #b_literal{val=T}]}, _Ts) ->
+    #b_literal{val=[H|T]};
+simplify(#b_set{op=put_tuple,args=Args}=I, _Ts) ->
+    case make_literal_list(Args) of
+        none -> I;
+        List -> #b_literal{val=list_to_tuple(List)}
+    end;
+simplify(#b_set{op=wait_timeout,args=[#b_literal{val=0}]}, _Ts) ->
+    #b_literal{val=true};
+simplify(#b_set{op=wait_timeout,args=[#b_literal{val=infinity}]}=I, _Ts) ->
+    I#b_set{op=wait,args=[]};
+simplify(I, _Ts) -> I.
+
+make_literal_list(Args) ->
+    make_literal_list(Args, []).
+
+make_literal_list([#b_literal{val=H}|T], Acc) ->
+    make_literal_list(T, [H|Acc]);
+make_literal_list([_|_], _) ->
+    none;
+make_literal_list([], Acc) ->
+    reverse(Acc).
+
+is_safe_bool_op(Args, Ts) ->
+    [T1,T2] = get_types(Args, Ts),
+    t_is_boolean(T1) andalso t_is_boolean(T2).
+
+all_same([{H,_}|T]) ->
+    all(fun({E,_}) -> E =:= H end, T).
+
+eval_bif(#b_set{op={bif,Bif},args=Args}=I, Ts) ->
+    Arity = length(Args),
+    case erl_bifs:is_pure(erlang, Bif, Arity) of
+        false ->
+            I;
+        true ->
+            case make_literal_list(Args) of
+                none ->
+                    case get_types(Args, Ts) of
+                        [any] ->
+                            I;
+                        [Type] ->
+                            case will_succeed(Bif, Type) of
+                                yes ->
+                                    #b_literal{val=true};
+                                no ->
+                                    #b_literal{val=false};
+                                maybe ->
+                                    I
+                            end;
+                        _ ->
+                            I
+                    end;
+                LitArgs ->
+                    try apply(erlang, Bif, LitArgs) of
+                        Val -> #b_literal{val=Val}
+                    catch
+                        error:_ -> I
+                    end
+
+            end
+    end.
+
+simplify_args(Args, Sub, Ts) ->
+    [simplify_arg(Arg, Sub, Ts) || Arg <- Args].
+
+simplify_arg(#b_var{}=Arg0, Sub, Ts) ->
+    case sub_arg(Arg0, Sub) of
+        #b_literal{}=LitArg ->
+            LitArg;
+        #b_var{}=Arg ->
+            Type = get_type(Arg, Ts),
+            case get_literal_from_type(Type) of
+                none -> Arg;
+                #b_literal{}=Lit -> Lit
+            end
+    end;
+simplify_arg(#b_remote{mod=Mod,name=Name}=Rem, Sub, Ts) ->
+    Rem#b_remote{mod=simplify_arg(Mod, Sub, Ts),
+                 name=simplify_arg(Name, Sub, Ts)};
+simplify_arg(Arg, _Sub, _Ts) -> Arg.
+
+sub_arg(#b_var{}=Old, Sub) ->
+    case Sub of
+        #{Old:=New} -> New;
+        #{} -> Old
+    end.
+
+is_float_op('-', [float]) ->
+    true;
+is_float_op('/', [_,_]) ->
+    true;
+is_float_op(Op, [float,_Other]) ->
+    is_float_op_1(Op);
+is_float_op(Op, [_Other,float]) ->
+    is_float_op_1(Op);
+is_float_op(_, _) -> false.
+
+is_float_op_1('+') -> true;
+is_float_op_1('-') -> true;
+is_float_op_1('*') -> true;
+is_float_op_1(_) -> false.
+
+anno_float_arg(float) -> float;
+anno_float_arg(_) -> convert.
+
+opt_terminator(#b_br{bool=#b_literal{}}=Br, _Ts, _Ds) ->
+    beam_ssa:normalize(Br);
+opt_terminator(#b_br{bool=#b_var{}}=Br, Ts, Ds) ->
+    simplify_not(Br, Ts, Ds);
+opt_terminator(#b_switch{arg=#b_literal{}}=Sw, _Ts, _Ds) ->
+    beam_ssa:normalize(Sw);
+opt_terminator(#b_switch{arg=#b_var{}=V}=Sw, Ts, Ds) ->
+    case get_type(V, Ts) of
+        any ->
+            beam_ssa:normalize(Sw);
+        Type ->
+            beam_ssa:normalize(opt_switch(Sw, Type, Ts, Ds))
+    end;
+opt_terminator(#b_ret{}=Ret, _Ts, _Ds) -> Ret.
+
+
+opt_switch(#b_switch{fail=Fail,list=List0}=Sw0, Type, Ts, Ds) ->
+    List = prune_switch_list(List0, Fail, Type, Ts),
+    Sw1 = Sw0#b_switch{list=List},
+    case Type of
+        #t_integer{elements={_,_}=Range} ->
+            simplify_switch_int(Sw1, Range);
+        #t_atom{elements=[_|_]} ->
+            case t_is_boolean(Type) of
+                true ->
+                    #b_br{} = Br = simplify_switch_bool(Sw1, Ts, Ds),
+                    opt_terminator(Br, Ts, Ds);
+                false ->
+                    simplify_switch_atom(Type, Sw1)
+            end;
+        _ ->
+            Sw1
+    end.
+
+prune_switch_list([{_,Fail}|T], Fail, Type, Ts) ->
+    prune_switch_list(T, Fail, Type, Ts);
+prune_switch_list([{Arg,_}=Pair|T], Fail, Type, Ts) ->
+    case meet(get_type(Arg, Ts), Type) of
+        none ->
+            %% Different types. This value can never match.
+            prune_switch_list(T, Fail, Type, Ts);
+        _ ->
+            [Pair|prune_switch_list(T, Fail, Type, Ts)]
+    end;
+prune_switch_list([], _, _, _) -> [].
+
+update_successors(#b_br{bool=#b_literal{val=true},succ=S}, Ts, D) ->
+    update_successor(S, Ts, D);
+update_successors(#b_br{bool=#b_var{}=Bool,succ=Succ,fail=Fail}, Ts0, D0) ->
+    case cerl_sets:is_element(Bool, D0#d.once) of
+        true ->
+            %% This variable is defined in this block and is only
+            %% referenced by this br terminator. Therefore, there is
+            %% no need to include it in the type database passed on to
+            %% the successors of this block.
+            Ts = maps:remove(Bool, Ts0),
+            {SuccTs,FailTs} = infer_types_br(Bool, Ts, D0),
+            D = update_successor(Fail, FailTs, D0),
+            update_successor(Succ, SuccTs, D);
+        false ->
+            {SuccTs,FailTs} = infer_types_br(Bool, Ts0, D0),
+            D = update_successor_bool(Bool, false, Fail, FailTs, D0),
+            update_successor_bool(Bool, true, Succ, SuccTs, D)
+    end;
+update_successors(#b_switch{arg=#b_var{}=V,fail=Fail,list=List}, Ts, D0) ->
+    case cerl_sets:is_element(V, D0#d.once) of
+        true ->
+            %% This variable is defined in this block and is only
+            %% referenced by this switch terminator. Therefore, there is
+            %% no need to include it in the type database passed on to
+            %% the successors of this block.
+            D = update_successor(Fail, Ts, D0),
+            F = fun({Val,S}, A) ->
+                        SuccTs0 = infer_types_switch(V, Val, Ts, D),
+                        SuccTs = maps:remove(V, SuccTs0),
+                        update_successor(S, SuccTs, A)
+                end,
+            foldl(F, D, List);
+        false ->
+            %% V can not be equal to any of the values in List at the fail
+            %% block.
+            FailTs = subtract_sw_list(V, List, Ts),
+            D = update_successor(Fail, FailTs, D0),
+            F = fun({Val,S}, A) ->
+                        SuccTs = infer_types_switch(V, Val, Ts, D),
+                        update_successor(S, SuccTs, A)
+                end,
+            foldl(F, D, List)
+    end;
+update_successors(#b_ret{arg=Arg}, Ts, D) ->
+    FuncId = D#d.func_id,
+    case D#d.ds of
+        #{ Arg := #b_set{op=call,args=[FuncId | _]} } ->
+            %% Returning a call to ourselves doesn't affect our own return
+            %% type.
+            D;
+        #{} ->
+            RetType = join([get_type(Arg, Ts) | D#d.ret_type]),
+            D#d{ret_type=[RetType]}
+    end.
+
+subtract_sw_list(V, List, Ts) ->
+    Ts#{ V := sub_sw_list_1(get_type(V, Ts), List, Ts) }.
+
+sub_sw_list_1(Type, [{Val,_}|T], Ts) ->
+    ValType = get_type(Val, Ts),
+    sub_sw_list_1(subtract(Type, ValType), T, Ts);
+sub_sw_list_1(Type, [], _Ts) ->
+    Type.
+
+update_successor_bool(#b_var{}=Var, BoolValue, S, Ts, D) ->
+    case t_is_boolean(get_type(Var, Ts)) of
+        true ->
+            update_successor(S, Ts#{Var:=t_atom(BoolValue)}, D);
+        false ->
+            %% The `br` terminator is preceeded by an instruction that
+            %% does not produce a boolean value, such a `new_try_tag`.
+            update_successor(S, Ts, D)
+    end.
+
+update_successor(?BADARG_BLOCK, _Ts, #d{}=D) ->
+    %% We KNOW that no variables are used in the ?BADARG_BLOCK,
+    %% so there is no need to update the type information. That
+    %% can be a huge timesaver for huge functions.
+    D;
+update_successor(S, Ts0, #d{ls=Ls}=D) ->
+    case Ls of
+        #{S:=Ts1} ->
+            Ts = join_types(Ts0, Ts1),
+            D#d{ls=Ls#{S:=Ts}};
+        #{} ->
+            D#d{ls=Ls#{S=>Ts0}}
+    end.
+
+update_types(#b_set{op=Op,dst=Dst,args=Args}, Ts, Ds) ->
+    T = type(Op, Args, Ts, Ds),
+    Ts#{Dst=>T}.
+
+type(phi, Args, Ts, _Ds) ->
+    Types = [get_type(A, Ts) || {A,_} <- Args],
+    join(Types);
+type({bif,'band'}, Args, Ts, _Ds) ->
+    band_type(Args, Ts);
+type({bif,Bif}, Args, Ts, _Ds) ->
+    case bif_type(Bif, Args) of
+        number ->
+            arith_op_type(Args, Ts);
+        Type ->
+            Type
+    end;
+type(bs_init, [#b_literal{val=Type}|Args], _Ts, _Ds) ->
+    case {Type,Args} of
+        {new,[_,#b_literal{val=Unit}]} ->
+            {binary,Unit};
+        {append,[_,_,#b_literal{val=Unit}]} ->
+            {binary,Unit};
+        {private_append,[_,_,#b_literal{val=Unit}]} ->
+            {binary,Unit}
+    end;
+type(bs_extract, [Ctx], Ts, _Ds) ->
+    #t_bs_match{type=Type} = get_type(Ctx, Ts),
+    Type;
+type(bs_match, Args, _Ts, _Ds) ->
+    #t_bs_match{type=bs_match_type(Args)};
+type(bs_get_tail, _Args, _Ts, _Ds) ->
+    {binary, 1};
+type(call, [#b_remote{mod=#b_literal{val=Mod},
+                      name=#b_literal{val=Name}}|Args], Ts, _Ds) ->
+    case {Mod,Name,Args} of
+        {erlang,setelement,[Pos,Tuple,Arg]} ->
+            case {get_type(Pos, Ts),get_type(Tuple, Ts)} of
+                {#t_integer{elements={Index,Index}},
+                 #t_tuple{elements=Es0,size=Size}=T} ->
+                    %% This is an exact index, update the type of said element
+                    %% or return 'none' if it's known to be out of bounds.
+                    Es = set_element_type(Index, get_type(Arg, Ts), Es0),
+                    case T#t_tuple.exact of
+                        false ->
+                            T#t_tuple{size=max(Index, Size),elements=Es};
+                        true when Index =< Size ->
+                            T#t_tuple{elements=Es};
+                        true ->
+                            none
+                    end;
+                {#t_integer{elements={Min,Max}},
+                 #t_tuple{elements=Es0,size=Size}=T} ->
+                    %% We know this will land between Min and Max, so kill the
+                    %% types for those indexes.
+                    Es = maps:without(seq(Min, Max), Es0),
+                    case T#t_tuple.exact of
+                        false ->
+                            T#t_tuple{elements=Es,size=max(Min, Size)};
+                        true when Min =< Size ->
+                            T#t_tuple{elements=Es,size=Size};
+                        true ->
+                            none
+                    end;
+                {_,#t_tuple{}=T} ->
+                    %% Position unknown, so we have to discard all element
+                    %% information.
+                    T#t_tuple{elements=#{}};
+                {#t_integer{elements={Min,_Max}},_} ->
+                    #t_tuple{size=Min};
+                {_,_} ->
+                    #t_tuple{}
+            end;
+        {erlang,'++',[List1,List2]} ->
+            case get_type(List1, Ts) =:= cons orelse
+                get_type(List2, Ts) =:= cons of
+                true -> cons;
+                false -> list
+            end;
+        {erlang,'--',[_,_]} ->
+            list;
+        {lists,F,Args} ->
+            Types = get_types(Args, Ts),
+            lists_function_type(F, Types);
+        {math,_,_} ->
+            case is_math_bif(Name, length(Args)) of
+                false -> any;
+                true -> float
+            end;
+        {_,_,_} ->
+            case erl_bifs:is_exit_bif(Mod, Name, length(Args)) of
+                true -> none;
+                false -> any
+            end
+    end;
+type(get_tuple_element, [Tuple, Offset], Ts, _Ds) ->
+    #t_tuple{size=Size,elements=Es} = get_type(Tuple, Ts),
+    #b_literal{val=N} = Offset,
+    true = Size > N, %Assertion.
+    get_element_type(N + 1, Es);
+type(is_nonempty_list, [_], _Ts, _Ds) ->
+    t_boolean();
+type(is_tagged_tuple, [_,#b_literal{},#b_literal{}], _Ts, _Ds) ->
+    t_boolean();
+type(put_map, _Args, _Ts, _Ds) ->
+    map;
+type(put_list, _Args, _Ts, _Ds) ->
+    cons;
+type(put_tuple, Args, Ts, _Ds) ->
+    {Es, _} = foldl(fun(Arg, {Es0, Index}) ->
+                        Type = get_type(Arg, Ts),
+                        Es = set_element_type(Index, Type, Es0),
+                        {Es, Index + 1}
+                    end, {#{}, 1}, Args),
+    #t_tuple{exact=true,size=length(Args),elements=Es};
+type(succeeded, [#b_var{}=Src], Ts, Ds) ->
+    case maps:get(Src, Ds) of
+        #b_set{op={bif,Bif},args=BifArgs} ->
+            Types = get_types(BifArgs, Ts),
+            case {Bif,Types} of
+                {BoolOp,[T1,T2]} when BoolOp =:= 'and'; BoolOp =:= 'or' ->
+                    case t_is_boolean(T1) andalso t_is_boolean(T2) of
+                        true -> t_atom(true);
+                        false -> t_boolean()
+                    end;
+                {byte_size,[{binary,_}]} ->
+                    t_atom(true);
+                {bit_size,[{binary,_}]} ->
+                    t_atom(true);
+                {map_size,[map]} ->
+                    t_atom(true);
+                {'not',[Type]} ->
+                    case t_is_boolean(Type) of
+                        true -> t_atom(true);
+                        false -> t_boolean()
+                    end;
+                {size,[{binary,_}]} ->
+                    t_atom(true);
+                {tuple_size,[#t_tuple{}]} ->
+                    t_atom(true);
+                {_,_} ->
+                    t_boolean()
+            end;
+        #b_set{op=get_hd} ->
+            t_atom(true);
+        #b_set{op=get_tl} ->
+            t_atom(true);
+        #b_set{op=get_tuple_element} ->
+            t_atom(true);
+        #b_set{op=wait} ->
+            t_atom(false);
+        #b_set{} ->
+            t_boolean()
+    end;
+type(succeeded, [#b_literal{}], _Ts, _Ds) ->
+    t_atom(true);
+type(_, _, _, _) -> any.
+
+arith_op_type(Args, Ts) ->
+    Types = get_types(Args, Ts),
+    foldl(fun(#t_integer{}, unknown) -> t_integer();
+             (#t_integer{}, number) -> number;
+             (#t_integer{}, float) -> float;
+             (#t_integer{}, #t_integer{}) -> t_integer();
+             (float, unknown) -> float;
+             (float, #t_integer{}) -> float;
+             (float, number) -> float;
+             (number, unknown) -> number;
+             (number, #t_integer{}) -> number;
+             (number, float) -> float;
+             (any, _) -> number;
+             (Same, Same) -> Same;
+             (_, _) -> none
+          end, unknown, Types).
+
+lists_function_type(F, Types) ->
+    case {F,Types} of
+        %% Functions that return booleans.
+        {all,[_,_]} ->
+            t_boolean();
+        {any,[_,_]} ->
+            t_boolean();
+        {keymember,[_,_,_]} ->
+            t_boolean();
+        {member,[_,_]} ->
+            t_boolean();
+        {prefix,[_,_]} ->
+            t_boolean();
+        {suffix,[_,_]} ->
+            t_boolean();
+
+        %% Functions that return lists.
+        {dropwhile,[_,_]} ->
+            list;
+        {duplicate,[_,_]} ->
+            list;
+        {filter,[_,_]} ->
+            list;
+        {flatten,[_]} ->
+            list;
+        {map,[_Fun,List]} ->
+            same_length_type(List);
+        {MapFold,[_Fun,_Acc,List]} when MapFold =:= mapfoldl;
+                                        MapFold =:= mapfoldr ->
+            #t_tuple{size=2,exact=true,
+                     elements=#{1=>same_length_type(List)}};
+        {partition,[_,_]} ->
+            t_two_tuple(list, list);
+        {reverse,[List]} ->
+            same_length_type(List);
+        {sort,[List]} ->
+            same_length_type(List);
+        {splitwith,[_,_]} ->
+            t_two_tuple(list, list);
+        {takewhile,[_,_]} ->
+            list;
+        {unzip,[List]} ->
+            ListType = same_length_type(List),
+            t_two_tuple(ListType, ListType);
+        {usort,[List]} ->
+            same_length_type(List);
+        {zip,[_,_]} ->
+            list;
+        {zipwith,[_,_,_]} ->
+            list;
+        {_,_} ->
+            any
+    end.
+
+%% For a lists function that return a list of the same
+%% length as the input list, return the type of the list.
+same_length_type(cons) -> cons;
+same_length_type(nil) -> nil;
+same_length_type(_) -> list.
+
+t_two_tuple(Type1, Type2) ->
+    #t_tuple{size=2,exact=true,
+             elements=#{1=>Type1,2=>Type2}}.
+
+%% will_succeed(TestOperation, Type) -> yes|no|maybe.
+%%  Test whether TestOperation applied to an argument of type Type
+%%  will succeed.  Return yes, no, or maybe.
+%%
+%%  Type is a type as described in the comment for verified_type/1 at
+%%  the very end of this file, but it will *never* be 'any'.
+
+will_succeed(is_atom, Type) ->
+    case Type of
+        #t_atom{} -> yes;
+        _ -> no
+    end;
+will_succeed(is_binary, Type) ->
+    case Type of
+        {binary,U} when U rem 8 =:= 0 -> yes;
+        {binary,_} -> maybe;
+        _ -> no
+    end;
+will_succeed(is_bitstring, Type) ->
+    case Type of
+        {binary,_} -> yes;
+        _ -> no
+    end;
+will_succeed(is_boolean, Type) ->
+    case Type of
+        #t_atom{elements=any} ->
+            maybe;
+        #t_atom{elements=Es} ->
+            case t_is_boolean(Type) of
+                true ->
+                    yes;
+                false ->
+                    case any(fun is_boolean/1, Es) of
+                        true -> maybe;
+                        false -> no
+                    end
+            end;
+        _ ->
+            no
+    end;
+will_succeed(is_float, Type) ->
+    case Type of
+        float -> yes;
+        number -> maybe;
+        _ -> no
+    end;
+will_succeed(is_integer, Type) ->
+    case Type of
+        #t_integer{} -> yes;
+        number -> maybe;
+        _ -> no
+    end;
+will_succeed(is_list, Type) ->
+    case Type of
+        list -> yes;
+        cons -> yes;
+        _ -> no
+    end;
+will_succeed(is_map, Type) ->
+    case Type of
+        map -> yes;
+        _ -> no
+    end;
+will_succeed(is_number, Type) ->
+    case Type of
+        float -> yes;
+        #t_integer{} -> yes;
+        number -> yes;
+        _ -> no
+    end;
+will_succeed(is_tuple, Type) ->
+    case Type of
+        #t_tuple{} -> yes;
+        _ -> no
+    end;
+will_succeed(_, _) -> maybe.
+
+
+band_type([Other,#b_literal{val=Int}], Ts) when is_integer(Int) ->
+    band_type_1(Int, Other, Ts);
+band_type([_,_], _) -> t_integer().
+
+band_type_1(Int, OtherSrc, Ts) ->
+    Type = band_type_2(Int, 0),
+    OtherType = get_type(OtherSrc, Ts),
+    meet(Type, OtherType).
+
+band_type_2(N, Bits) when Bits < 64 ->
+    case 1 bsl Bits of
+        P when P =:= N + 1 ->
+            t_integer(0, N);
+        P when P > N + 1 ->
+            t_integer();
+        _ ->
+            band_type_2(N, Bits+1)
+    end;
+band_type_2(_, _) ->
+    %% Negative or large positive number. Give up.
+    t_integer().
+
+bs_match_type([#b_literal{val=Type}|Args]) ->
+    bs_match_type(Type, Args).
+
+bs_match_type(binary, Args) ->
+    [_,_,_,#b_literal{val=U}] = Args,
+    {binary,U};
+bs_match_type(float, _) ->
+    float;
+bs_match_type(integer, Args) ->
+    case Args of
+        [_,
+         #b_literal{val=Flags},
+         #b_literal{val=Size},
+         #b_literal{val=Unit}] when Size * Unit < 64 ->
+            NumBits = Size * Unit,
+            case member(unsigned, Flags) of
+                true ->
+                    t_integer(0, (1 bsl NumBits)-1);
+                false ->
+                    %% Signed integer. Don't bother.
+                    t_integer()
+            end;
+        [_|_] ->
+            t_integer()
+    end;
+bs_match_type(skip, _) ->
+    any;
+bs_match_type(string, _) ->
+    any;
+bs_match_type(utf8, _) ->
+    ?UNICODE_INT;
+bs_match_type(utf16, _) ->
+    ?UNICODE_INT;
+bs_match_type(utf32, _) ->
+    ?UNICODE_INT.
+
+simplify_switch_atom(#t_atom{elements=Atoms}, #b_switch{list=List0}=Sw) ->
+    case sort([A || {#b_literal{val=A},_} <- List0]) of
+        Atoms ->
+            %% All possible atoms are included in the list. The
+            %% failure label will never be used.
+            [{_,Fail}|List] = List0,
+            Sw#b_switch{fail=Fail,list=List};
+        _ ->
+            Sw
+    end.
+
+simplify_switch_int(#b_switch{list=List0}=Sw, {Min,Max}) ->
+    List1 = sort(List0),
+    Vs = [V || {#b_literal{val=V},_} <- List1],
+    case eq_ranges(Vs, Min, Max) of
+        true ->
+            {_,LastL} = last(List1),
+            List = droplast(List1),
+            Sw#b_switch{fail=LastL,list=List};
+        false ->
+            Sw
+    end.
+
+eq_ranges([H], H, H) -> true;
+eq_ranges([H|T], H, Max) -> eq_ranges(T, H+1, Max);
+eq_ranges(_, _, _) -> false.
+
+simplify_is_record(I, #t_tuple{exact=Exact,
+                               size=Size,
+                               elements=Es},
+                   RecSize, RecTag, Ts) ->
+    TagType = maps:get(1, Es, any),
+    TagMatch = case get_literal_from_type(TagType) of
+                   #b_literal{}=RecTag -> yes;
+                   #b_literal{} -> no;
+                   none ->
+                       %% Is it at all possible for the tag to match?
+                       case meet(get_type(RecTag, Ts), TagType) of
+                           none -> no;
+                           _ -> maybe
+                       end
+               end,
+    if
+        Size =/= RecSize, Exact; Size > RecSize; TagMatch =:= no ->
+            #b_literal{val=false};
+        Size =:= RecSize, Exact, TagMatch =:= yes ->
+            #b_literal{val=true};
+        true ->
+            I
+    end;
+simplify_is_record(I, any, _Size, _Tag, _Ts) ->
+    I;
+simplify_is_record(_I, _Type, _Size, _Tag, _Ts) ->
+    #b_literal{val=false}.
+
+simplify_switch_bool(#b_switch{arg=B,fail=Fail,list=List0}, Ts, Ds) ->
+    FalseVal = #b_literal{val=false},
+    TrueVal = #b_literal{val=true},
+    List1 = List0 ++ [{FalseVal,Fail},{TrueVal,Fail}],
+    {_,FalseLbl} = keyfind(FalseVal, 1, List1),
+    {_,TrueLbl} = keyfind(TrueVal, 1, List1),
+    Br = beam_ssa:normalize(#b_br{bool=B,succ=TrueLbl,fail=FalseLbl}),
+    simplify_not(Br, Ts, Ds).
+
+simplify_not(#b_br{bool=#b_var{}=V,succ=Succ,fail=Fail}=Br0, Ts, Ds) ->
+    case Ds of
+        #{V:=#b_set{op={bif,'not'},args=[Bool]}} ->
+            case t_is_boolean(get_type(Bool, Ts)) of
+                true ->
+                    Br = Br0#b_br{bool=Bool,succ=Fail,fail=Succ},
+                    beam_ssa:normalize(Br);
+                false ->
+                    Br0
+            end;
+        #{} ->
+            Br0
+    end;
+simplify_not(#b_br{bool=#b_literal{}}=Br, _Ts, _Ds) -> Br.
+
+%%%
+%%% Calculate the set of variables that are only used once in the
+%%% terminator of the block that defines them. That will allow us to
+%%% discard type information for variables that will never be
+%%% referenced by the successor blocks, potentially improving
+%%% compilation times.
+%%%
+
+used_once(Linear, Args) ->
+    Map0 = used_once_1(reverse(Linear), #{}),
+    Map = maps:without(Args, Map0),
+    cerl_sets:from_list(maps:keys(Map)).
+
+used_once_1([{L,#b_blk{is=Is,last=Last}}|Bs], Uses0) ->
+    Uses1 = used_once_last_uses(beam_ssa:used(Last), L, Uses0),
+    Uses = used_once_2(reverse(Is), L, Uses1),
+    used_once_1(Bs, Uses);
+used_once_1([], Uses) -> Uses.
+
+used_once_2([#b_set{dst=Dst}=I|Is], L, Uses0) ->
+    Uses = used_once_uses(beam_ssa:used(I), L, Uses0),
+    case Uses of
+        #{Dst:=[L]} ->
+            used_once_2(Is, L, Uses);
+        #{} ->
+            %% Used more than once or used once in
+            %% in another block.
+            used_once_2(Is, L, maps:remove(Dst, Uses))
+    end;
+used_once_2([], _, Uses) -> Uses.
+
+used_once_uses([V|Vs], L, Uses) ->
+    case Uses of
+        #{V:=more_than_once} ->
+            used_once_uses(Vs, L, Uses);
+        #{} ->
+            %% Already used or first use is not in
+            %% a terminator.
+            used_once_uses(Vs, L, Uses#{V=>more_than_once})
+    end;
+used_once_uses([], _, Uses) -> Uses.
+
+used_once_last_uses([V|Vs], L, Uses) ->
+    case Uses of
+        #{V:=[_]} ->
+            %% Second time this variable is used.
+            used_once_last_uses(Vs, L, Uses#{V:=more_than_once});
+        #{V:=more_than_once} ->
+            %% Used at least twice before.
+            used_once_last_uses(Vs, L, Uses);
+        #{} ->
+            %% First time this variable is used.
+            used_once_last_uses(Vs, L, Uses#{V=>[L]})
+    end;
+used_once_last_uses([], _, Uses) -> Uses.
+
+
+get_types(Values, Ts) ->
+    [get_type(Val, Ts) || Val <- Values].
+-spec get_type(beam_ssa:value(), type_db()) -> type().
+
+get_type(#b_var{}=V, Ts) ->
+    #{V:=T} = Ts,
+    T;
+get_type(#b_literal{val=Val}, _Ts) ->
+    if
+        is_atom(Val) ->
+            t_atom(Val);
+        is_float(Val) ->
+            float;
+        is_integer(Val) ->
+            t_integer(Val);
+        is_list(Val), Val =/= [] ->
+            cons;
+        is_map(Val) ->
+            map;
+        Val =:= {} ->
+            #t_tuple{exact=true};
+        is_tuple(Val) ->
+            {Es, _} = foldl(fun(E, {Es0, Index}) ->
+                                Type = get_type(#b_literal{val=E}, #{}),
+                                Es = set_element_type(Index, Type, Es0),
+                                {Es, Index + 1}
+                            end, {#{}, 1}, tuple_to_list(Val)),
+            #t_tuple{exact=true,size=tuple_size(Val),elements=Es};
+        Val =:= [] ->
+            nil;
+        true ->
+            any
+    end.
+
+%% infer_types(Var, Types, #d{}) -> {SuccTypes,FailTypes}
+%%  Looking at the expression that defines the variable Var, infer
+%%  the types for the variables in the arguments. Return the updated
+%%  type database for the case that the expression evaluates to
+%%  true, and and for the case that it evaluates to false.
+%%
+%%  Here is an example. The variable being asked about is
+%%  the variable Bool, which is defined like this:
+%%
+%%     Bool = is_nonempty_list L
+%%
+%%  If 'is_nonempty_list L' evaluates to 'true', L must
+%%  must be cons. The meet of the previously known type of L and 'cons'
+%%  will be added to SuccTypes.
+%%
+%%  On the other hand, if 'is_nonempty_list L' evaluates to false, L
+%%  is not cons and cons can be subtracted from the previously known
+%%  type for L. For example, if L was known to be 'list', subtracting
+%%  'cons' would give 'nil' as the only possible type. The result of the
+%%  subtraction for L will be added to FailTypes.
+%%
+%%  Here is another example, asking about the variable Bool:
+%%
+%%     Head = bif:hd L
+%%     Bool = succeeded Head
+%%
+%%  'succeeded Head' will evaluate to 'true' if the instrution that
+%%  defined Head succeeded. In this case, it is the 'bif:hd L'
+%%  instruction, which will succeed if L is 'cons'. Thus, the meet of
+%%  the previous type for L and 'cons' will be added to SuccTypes.
+%%
+%%  If 'succeeded Head' evaluates to 'false', it means that 'bif:hd L'
+%%  failed and that L is not 'cons'. 'cons' can be subtracted from the
+%%  previously known type for L and the result put in FailTypes.
+
+infer_types_br(#b_var{}=V, Ts, #d{ds=Ds}) ->
+    #{V:=#b_set{op=Op,args=Args}} = Ds,
+    Types0 = infer_type(Op, Args, Ds),
+
+    %% We must be careful with types inferred from '=:='.
+    %%
+    %% If we have seen L =:= [a], we know that L is 'cons' if the
+    %% comparison succeeds. However, if the comparison fails, L could
+    %% still be 'cons'. Therefore, we must not subtract 'cons' from the
+    %% previous type of L.
+    %%
+    %% However, it is safe to subtract a type inferred from '=:=' if
+    %% it is single-valued, e.g. if it is [] or the atom 'true'.
+    EqTypes0 = infer_eq_type(Op, Args, Ts, Ds),
+    {Types1,EqTypes} = partition(fun({_,T}) ->
+                                         is_singleton_type(T)
+                                 end, EqTypes0),
+
+    Types = Types1 ++ Types0,
+    {meet_types(EqTypes++Types, Ts),subtract_types(Types, Ts)}.
+
+infer_types_switch(V, Lit, Ts, #d{ds=Ds}) ->
+    Types = infer_eq_type({bif,'=:='}, [V, Lit], Ts, Ds),
+    meet_types(Types, Ts).
+
+infer_eq_type({bif,'=:='}, [#b_var{}=Src,#b_literal{}=Lit], Ts, Ds) ->
+    Def = maps:get(Src, Ds),
+    Type = get_type(Lit, Ts),
+    [{Src,Type} | infer_eq_lit(Def, Lit)];
+infer_eq_type({bif,'=:='}, [#b_var{}=Arg0,#b_var{}=Arg1], Ts, _Ds) ->
+    %% As an example, assume that L1 is known to be 'list', and L2 is
+    %% known to be 'cons'. Then if 'L1 =:= L2' evaluates to 'true', it can
+    %% be inferred that L1 is 'cons' (the meet of 'cons' and 'list').
+    Type0 = get_type(Arg0, Ts),
+    Type1 = get_type(Arg1, Ts),
+    Type = meet(Type0, Type1),
+    [{V,MeetType} ||
+        {V,OrigType,MeetType} <-
+            [{Arg0,Type0,Type},{Arg1,Type1,Type}],
+        OrigType =/= MeetType];
+infer_eq_type(_Op, _Args, _Ts, _Ds) ->
+    [].
+
+infer_eq_lit(#b_set{op={bif,tuple_size},args=[#b_var{}=Tuple]},
+             #b_literal{val=Size}) when is_integer(Size) ->
+    [{Tuple,#t_tuple{exact=true,size=Size}}];
+infer_eq_lit(#b_set{op=get_tuple_element,
+                    args=[#b_var{}=Tuple,#b_literal{val=N}]},
+             #b_literal{}=Lit) ->
+    Index = N + 1,
+    Es = set_element_type(Index, get_type(Lit, #{}), #{}),
+    [{Tuple,#t_tuple{size=Index,elements=Es}}];
+infer_eq_lit(_, _) -> [].
+
+infer_type({bif,element}, [#b_literal{val=Pos},#b_var{}=Tuple], _Ds) ->
+    if
+        is_integer(Pos), 1 =< Pos ->
+            [{Tuple,#t_tuple{size=Pos}}];
+        true ->
+            []
+    end;
+infer_type({bif,element}, [#b_var{}=Position,#b_var{}=Tuple], _Ds) ->
+    [{Position,t_integer()},{Tuple,#t_tuple{}}];
+infer_type({bif,Bif}, [#b_var{}=Src]=Args, _Ds) ->
+    case inferred_bif_type(Bif, Args) of
+        any -> [];
+        T -> [{Src,T}]
+    end;
+infer_type({bif,binary_part}, [#b_var{}=Src,_], _Ds) ->
+    [{Src,{binary,8}}];
+infer_type({bif,is_map_key}, [_,#b_var{}=Src], _Ds) ->
+    [{Src,map}];
+infer_type({bif,map_get}, [_,#b_var{}=Src], _Ds) ->
+    [{Src,map}];
+infer_type({bif,Bif}, [_,_]=Args, _Ds) ->
+    case inferred_bif_type(Bif, Args) of
+        any -> [];
+        T -> [{A,T} || #b_var{}=A <- Args]
+    end;
+infer_type({bif,binary_part}, [#b_var{}=Src,Pos,Len], _Ds) ->
+    [{Src,{binary,8}}|
+     [{V,t_integer()} || #b_var{}=V <- [Pos,Len]]];
+infer_type(bs_start_match, [#b_var{}=Bin], _Ds) ->
+    [{Bin,{binary,1}}];
+infer_type(is_nonempty_list, [#b_var{}=Src], _Ds) ->
+    [{Src,cons}];
+infer_type(is_tagged_tuple, [#b_var{}=Src,#b_literal{val=Size},
+                             #b_literal{}=Tag], _Ds) ->
+    Es = set_element_type(1, get_type(Tag, #{}), #{}),
+    [{Src,#t_tuple{exact=true,size=Size,elements=Es}}];
+infer_type(succeeded, [#b_var{}=Src], Ds) ->
+    #b_set{op=Op,args=Args} = maps:get(Src, Ds),
+    infer_type(Op, Args, Ds);
+infer_type(_Op, _Args, _Ds) ->
+    [].
+
+%% bif_type(Name, Args) -> Type
+%%  Return the return type for the guard BIF or operator Name with
+%%  arguments Args.
+%%
+%%  Note that that the following BIFs are handle elsewhere:
+%%
+%%     band/2
+
+bif_type(abs, [_]) -> number;
+bif_type(bit_size, [_]) -> t_integer();
+bif_type(byte_size, [_]) -> t_integer();
+bif_type(ceil, [_]) -> t_integer();
+bif_type(float, [_]) -> float;
+bif_type(floor, [_]) -> t_integer();
+bif_type(is_map_key, [_,_]) -> t_boolean();
+bif_type(length, [_]) -> t_integer();
+bif_type(map_size, [_]) -> t_integer();
+bif_type(node, []) -> #t_atom{};
+bif_type(node, [_]) -> #t_atom{};
+bif_type(round, [_]) -> t_integer();
+bif_type(size, [_]) -> t_integer();
+bif_type(trunc, [_]) -> t_integer();
+bif_type(tuple_size, [_]) -> t_integer();
+bif_type('bnot', [_]) -> t_integer();
+bif_type('bor', [_,_]) -> t_integer();
+bif_type('bsl', [_,_]) -> t_integer();
+bif_type('bsr', [_,_]) -> t_integer();
+bif_type('bxor', [_,_]) -> t_integer();
+bif_type('div', [_,_]) -> t_integer();
+bif_type('rem', [_,_]) -> t_integer();
+bif_type('/', [_,_]) -> float;
+bif_type(Name, Args) ->
+    Arity = length(Args),
+    case erl_internal:new_type_test(Name, Arity) orelse
+        erl_internal:bool_op(Name, Arity) orelse
+        erl_internal:comp_op(Name, Arity) of
+        true ->
+            t_boolean();
+        false ->
+            case erl_internal:arith_op(Name, Arity) of
+                true -> number;
+                false -> any
+            end
+    end.
+
+inferred_bif_type(is_atom, [_]) -> t_atom();
+inferred_bif_type(is_binary, [_]) -> {binary,8};
+inferred_bif_type(is_bitstring, [_]) -> {binary,1};
+inferred_bif_type(is_boolean, [_]) -> t_boolean();
+inferred_bif_type(is_float, [_]) -> float;
+inferred_bif_type(is_integer, [_]) -> t_integer();
+inferred_bif_type(is_list, [_]) -> list;
+inferred_bif_type(is_map, [_]) -> map;
+inferred_bif_type(is_number, [_]) -> number;
+inferred_bif_type(is_tuple, [_]) -> #t_tuple{};
+inferred_bif_type(abs, [_]) -> number;
+inferred_bif_type(bit_size, [_]) -> {binary,1};
+inferred_bif_type('bnot', [_]) -> t_integer();
+inferred_bif_type(byte_size, [_]) -> {binary,1};
+inferred_bif_type(ceil, [_]) -> number;
+inferred_bif_type(float, [_]) -> number;
+inferred_bif_type(floor, [_]) -> number;
+inferred_bif_type(hd, [_]) -> cons;
+inferred_bif_type(length, [_]) -> list;
+inferred_bif_type(map_size, [_]) -> map;
+inferred_bif_type('not', [_]) -> t_boolean();
+inferred_bif_type(round, [_]) -> number;
+inferred_bif_type(trunc, [_]) -> number;
+inferred_bif_type(tl, [_]) -> cons;
+inferred_bif_type(tuple_size, [_]) -> #t_tuple{};
+inferred_bif_type('and', [_,_]) -> t_boolean();
+inferred_bif_type('or', [_,_]) -> t_boolean();
+inferred_bif_type('xor', [_,_]) -> t_boolean();
+inferred_bif_type('band', [_,_]) -> t_integer();
+inferred_bif_type('bor', [_,_]) -> t_integer();
+inferred_bif_type('bsl', [_,_]) -> t_integer();
+inferred_bif_type('bsr', [_,_]) -> t_integer();
+inferred_bif_type('bxor', [_,_]) -> t_integer();
+inferred_bif_type('div', [_,_]) -> t_integer();
+inferred_bif_type('rem', [_,_]) -> t_integer();
+inferred_bif_type('+', [_,_]) -> number;
+inferred_bif_type('-', [_,_]) -> number;
+inferred_bif_type('*', [_,_]) -> number;
+inferred_bif_type('/', [_,_]) -> number;
+inferred_bif_type(_, _) -> any.
+
+is_math_bif(cos, 1) -> true;
+is_math_bif(cosh, 1) -> true;
+is_math_bif(sin, 1) -> true;
+is_math_bif(sinh, 1) -> true;
+is_math_bif(tan, 1) -> true;
+is_math_bif(tanh, 1) -> true;
+is_math_bif(acos, 1) -> true;
+is_math_bif(acosh, 1) -> true;
+is_math_bif(asin, 1) -> true;
+is_math_bif(asinh, 1) -> true;
+is_math_bif(atan, 1) -> true;
+is_math_bif(atanh, 1) -> true;
+is_math_bif(erf, 1) -> true;
+is_math_bif(erfc, 1) -> true;
+is_math_bif(exp, 1) -> true;
+is_math_bif(log, 1) -> true;
+is_math_bif(log2, 1) -> true;
+is_math_bif(log10, 1) -> true;
+is_math_bif(sqrt, 1) -> true;
+is_math_bif(atan2, 2) -> true;
+is_math_bif(pow, 2) -> true;
+is_math_bif(ceil, 1) -> true;
+is_math_bif(floor, 1) -> true;
+is_math_bif(fmod, 2) -> true;
+is_math_bif(pi, 0) -> true;
+is_math_bif(_, _) -> false.
+
+join_types(Ts0, Ts1) ->
+    if
+        map_size(Ts0) < map_size(Ts1) ->
+            join_types_1(maps:keys(Ts0), Ts1, Ts0);
+        true ->
+            join_types_1(maps:keys(Ts1), Ts0, Ts1)
+    end.
+
+join_types_1([V|Vs], Ts0, Ts1) ->
+    case {Ts0,Ts1} of
+        {#{V:=Same},#{V:=Same}} ->
+            join_types_1(Vs, Ts0, Ts1);
+        {#{V:=T0},#{V:=T1}} ->
+            case join(T0, T1) of
+                T1 ->
+                    join_types_1(Vs, Ts0, Ts1);
+                T ->
+                    join_types_1(Vs, Ts0, Ts1#{V:=T})
+            end;
+        {#{},#{V:=_}} ->
+            join_types_1(Vs, Ts0, Ts1)
+    end;
+join_types_1([], Ts0, Ts1) ->
+    maps:merge(Ts0, Ts1).
+
+join([T1,T2|Ts]) ->
+    join([join(T1, T2)|Ts]);
+join([T]) -> T.
+
+get_literal_from_type(#t_atom{elements=[Atom]}) ->
+    #b_literal{val=Atom};
+get_literal_from_type(#t_integer{elements={Int,Int}}) ->
+    #b_literal{val=Int};
+get_literal_from_type(nil) ->
+    #b_literal{val=[]};
+get_literal_from_type(_) -> none.
+
+t_atom() ->
+    #t_atom{elements=any}.
+
+t_atom(Atom) when is_atom(Atom) ->
+    #t_atom{elements=[Atom]}.
+
+t_boolean() ->
+    #t_atom{elements=[false,true]}.
+
+t_integer() ->
+    #t_integer{elements=any}.
+
+t_integer(Int) when is_integer(Int) ->
+    #t_integer{elements={Int,Int}}.
+
+t_integer(Min, Max) when is_integer(Min), is_integer(Max) ->
+    #t_integer{elements={Min,Max}}.
+
+t_is_boolean(#t_atom{elements=[F,T]}) ->
+    F =:= false andalso T =:= true;
+t_is_boolean(#t_atom{elements=[B]}) ->
+    is_boolean(B);
+t_is_boolean(_) -> false.
+
+t_tuple_size(#t_tuple{size=Size,exact=false}) ->
+    {at_least,Size};
+t_tuple_size(#t_tuple{size=Size,exact=true}) ->
+    {exact,Size};
+t_tuple_size(_) ->
+    none.
+
+is_singleton_type(Type) ->
+    get_literal_from_type(Type) =/= none.
+
+get_element_type(Index, Es) ->
+    case Es of
+        #{ Index := T } -> T;
+        #{} -> any
+    end.
+
+set_element_type(_Key, none, Es) ->
+    Es;
+set_element_type(Key, any, Es) ->
+    maps:remove(Key, Es);
+set_element_type(Key, Type, Es) ->
+    Es#{ Key => Type }.
+
+%% join(Type1, Type2) -> Type
+%%  Return the "join" of Type1 and Type2. The join is a more general
+%%  type than Type1 and Type2. For example:
+%%
+%%     join(#t_integer{elements=any}, #t_integer=elements={0,3}}) ->
+%%          #t_integer{}
+%%
+%%  The join for two different types result in 'any', which is
+%%  the top element for our type lattice:
+%%
+%%     join(#t_integer{}, map) -> any
+
+-spec join(type(), type()) -> type().
+
+join(T, T) ->
+    verified_type(T);
+join(none, T) ->
+    verified_type(T);
+join(T, none) ->
+    verified_type(T);
+join(any, _) -> any;
+join(_, any) -> any;
+join(#t_atom{elements=[_|_]=Set1}, #t_atom{elements=[_|_]=Set2}) ->
+    Set = ordsets:union(Set1, Set2),
+    case ordsets:size(Set) of
+        Size when Size =< ?ATOM_SET_SIZE ->
+            #t_atom{elements=Set};
+        _Size ->
+            #t_atom{elements=any}
+    end;
+join(#t_atom{elements=any}=T, #t_atom{elements=[_|_]}) -> T;
+join(#t_atom{elements=[_|_]}, #t_atom{elements=any}=T) -> T;
+join({binary,U1}, {binary,U2}) ->
+    {binary,gcd(U1, U2)};
+join(#t_integer{}, #t_integer{}) -> t_integer();
+join(list, cons) -> list;
+join(cons, list) -> list;
+join(nil, cons) -> list;
+join(cons, nil) -> list;
+join(nil, list) -> list;
+join(list, nil) -> list;
+join(#t_integer{}, float) -> number;
+join(float, #t_integer{}) -> number;
+join(#t_integer{}, number) -> number;
+join(number, #t_integer{}) -> number;
+join(float, number) -> number;
+join(number, float) -> number;
+join(#t_tuple{size=Sz,exact=ExactA,elements=EsA},
+     #t_tuple{size=Sz,exact=ExactB,elements=EsB}) ->
+    Exact = ExactA and ExactB,
+    Es = join_tuple_elements(Sz, EsA, EsB),
+    #t_tuple{size=Sz,exact=Exact,elements=Es};
+join(#t_tuple{size=SzA,elements=EsA}, #t_tuple{size=SzB,elements=EsB}) ->
+    Sz = min(SzA, SzB),
+    Es = join_tuple_elements(Sz, EsA, EsB),
+    #t_tuple{size=Sz,elements=Es};
+join(_T1, _T2) ->
+    %%io:format("~p ~p\n", [_T1,_T2]),
+    any.
+
+join_tuple_elements(MinSize, EsA, EsB) ->
+    Es0 = join_elements(EsA, EsB),
+    maps:filter(fun(Index, _Type) -> Index =< MinSize end, Es0).
+
+join_elements(Es1, Es2) ->
+    Keys = if
+               map_size(Es1) =< map_size(Es2) -> maps:keys(Es1);
+               map_size(Es1) > map_size(Es2) -> maps:keys(Es2)
+           end,
+    join_elements_1(Keys, Es1, Es2, #{}).
+
+join_elements_1([Key | Keys], Es1, Es2, Acc0) ->
+    case {Es1, Es2} of
+        {#{ Key := Type1 }, #{ Key := Type2 }} ->
+            Acc = set_element_type(Key, join(Type1, Type2), Acc0),
+            join_elements_1(Keys, Es1, Es2, Acc);
+        {#{}, #{}} ->
+            join_elements_1(Keys, Es1, Es2, Acc0)
+    end;
+join_elements_1([], _Es1, _Es2, Acc) ->
+    Acc.
+
+gcd(A, B) ->
+    case A rem B of
+        0 -> B;
+        X -> gcd(B, X)
+    end.
+
+meet_types([{V,T0}|Vs], Ts) ->
+    #{V:=T1} = Ts,
+    case meet(T0, T1) of
+        T1 -> meet_types(Vs, Ts);
+        T -> meet_types(Vs, Ts#{V:=T})
+    end;
+meet_types([], Ts) -> Ts.
+
+meet([T1,T2|Ts]) ->
+    meet([meet(T1, T2)|Ts]);
+meet([T]) -> T.
+
+subtract_types([{V,T0}|Vs], Ts) ->
+    #{V:=T1} = Ts,
+    case subtract(T1, T0) of
+        T1 -> subtract_types(Vs, Ts);
+        T -> subtract_types(Vs, Ts#{V:=T})
+    end;
+subtract_types([], Ts) -> Ts.
+
+%% subtract(Type1, Type2) -> Type.
+%%  Subtract Type2 from Type1. Example:
+%%
+%%     subtract(list, cons) -> nil
+
+subtract(#t_atom{elements=[_|_]=Set0}, #t_atom{elements=[_|_]=Set1}) ->
+    case ordsets:subtract(Set0, Set1) of
+        [] -> none;
+        [_|_]=Set -> #t_atom{elements=Set}
+    end;
+subtract(number, float) -> #t_integer{};
+subtract(number, #t_integer{elements=any}) -> float;
+subtract(list, cons) -> nil;
+subtract(list, nil) -> cons;
+subtract(T, _) -> T.
+
+%% meet(Type1, Type2) -> Type
+%%  Return the "meet" of Type1 and Type2. The meet is a narrower
+%%  type than Type1 and Type2. For example:
+%%
+%%     meet(#t_integer{elements=any}, #t_integer{elements={0,3}}) ->
+%%          #t_integer{elements={0,3}}
+%%
+%%  The meet for two different types result in 'none', which is
+%%  the bottom element for our type lattice:
+%%
+%%     meet(#t_integer{}, map) -> none
+
+-spec meet(type(), type()) -> type().
+
+meet(T, T) ->
+    verified_type(T);
+meet(#t_atom{elements=[_|_]=Set1}, #t_atom{elements=[_|_]=Set2}) ->
+    case ordsets:intersection(Set1, Set2) of
+        [] ->
+            none;
+        [_|_]=Set ->
+            #t_atom{elements=Set}
+    end;
+meet(#t_atom{elements=[_|_]}=T, #t_atom{elements=any}) ->
+    T;
+meet(#t_atom{elements=any}, #t_atom{elements=[_|_]}=T) ->
+    T;
+meet(#t_integer{elements={_,_}}=T, #t_integer{elements=any}) ->
+    T;
+meet(#t_integer{elements=any}, #t_integer{elements={_,_}}=T) ->
+    T;
+meet(#t_integer{elements={Min1,Max1}},
+     #t_integer{elements={Min2,Max2}}) ->
+    #t_integer{elements={max(Min1, Min2),min(Max1, Max2)}};
+meet(#t_integer{}=T, number) -> T;
+meet(float=T, number) -> T;
+meet(number, #t_integer{}=T) -> T;
+meet(number, float=T) -> T;
+meet(list, cons) -> cons;
+meet(list, nil) -> nil;
+meet(cons, list) -> cons;
+meet(nil, list) -> nil;
+meet(#t_tuple{}=T1, #t_tuple{}=T2) ->
+    meet_tuples(T1, T2);
+meet({binary,U1}, {binary,U2}) ->
+    {binary,max(U1, U2)};
+meet(any, T) ->
+    verified_type(T);
+meet(T, any) ->
+    verified_type(T);
+meet(_, _) ->
+    %% Inconsistent types. There will be an exception at runtime.
+    none.
+
+meet_tuples(#t_tuple{size=Sz1,exact=true},
+            #t_tuple{size=Sz2,exact=true}) when Sz1 =/= Sz2 ->
+    none;
+meet_tuples(#t_tuple{size=Sz1,exact=Ex1,elements=Es1},
+            #t_tuple{size=Sz2,exact=Ex2,elements=Es2}) ->
+    Size = max(Sz1, Sz2),
+    Exact = Ex1 or Ex2,
+    case meet_elements(Es1, Es2) of
+        none ->
+            none;
+        Es ->
+            #t_tuple{size=Size,exact=Exact,elements=Es}
+    end.
+
+meet_elements(Es1, Es2) ->
+    Keys = maps:keys(Es1) ++ maps:keys(Es2),
+    meet_elements_1(Keys, Es1, Es2, #{}).
+
+meet_elements_1([Key | Keys], Es1, Es2, Acc) ->
+    case {Es1, Es2} of
+        {#{ Key := Type1 }, #{ Key := Type2 }} ->
+            case meet(Type1, Type2) of
+                none -> none;
+                Type -> meet_elements_1(Keys, Es1, Es2, Acc#{ Key => Type })
+            end;
+        {#{ Key := Type1 }, _} ->
+            meet_elements_1(Keys, Es1, Es2, Acc#{ Key => Type1 });
+        {_, #{ Key := Type2 }} ->
+            meet_elements_1(Keys, Es1, Es2, Acc#{ Key => Type2 })
+    end;
+meet_elements_1([], _Es1, _Es2, Acc) ->
+    Acc.
+
+%% verified_type(Type) -> Type
+%%  Returns the passed in type if it is one of the defined types.
+%%  Crashes if there is anything wrong with the type.
+%%
+%%  Here are all possible types:
+%%
+%%  any                  Any Erlang term (top element for the type lattice).
+%%
+%%  #t_atom{}            Any atom or some specific atoms.
+%%  {binary,Unit}        Binary/bitstring aligned to unit Unit.
+%%  float                Floating point number.
+%%  #t_integer{}         Integer
+%%  list                 Empty or nonempty list.
+%%  map                  Map.
+%%  nil                  Empty list.
+%%  cons                 Cons (nonempty list).
+%%  number               A number (float or integer).
+%%  #t_tuple{}           Tuple.
+%%
+%%  none                 No type (bottom element for the type lattice).
+
+-spec verified_type(T) -> T when
+      T :: type().
+
+verified_type(any=T) -> T;
+verified_type(none=T) -> T;
+verified_type(#t_atom{elements=any}=T) -> T;
+verified_type(#t_atom{elements=[_|_]}=T) -> T;
+verified_type({binary,U}=T) when is_integer(U) -> T;
+verified_type(#t_integer{elements=any}=T) -> T;
+verified_type(#t_integer{elements={Min,Max}}=T)
+  when is_integer(Min), is_integer(Max) -> T;
+verified_type(list=T) -> T;
+verified_type(map=T) -> T;
+verified_type(nil=T) -> T;
+verified_type(cons=T) -> T;
+verified_type(number=T) -> T;
+verified_type(#t_tuple{size=Size,elements=Es}=T) ->
+    %% All known elements must have a valid index and type. 'any' is prohibited
+    %% since it's implicit and should never be present in the map.
+    maps:fold(fun(Index, Element, _) when is_integer(Index),
+                                          1 =< Index, Index =< Size,
+                                          Element =/= any, Element =/= none ->
+                      verified_type(Element)
+              end, [], Es),
+    T;
+verified_type(float=T) -> T.
diff --git a/lib/compiler/src/beam_trim.erl b/lib/compiler/src/beam_trim.erl
index 4da0985085..acf3838da4 100644
--- a/lib/compiler/src/beam_trim.erl
+++ b/lib/compiler/src/beam_trim.erl
@@ -21,12 +21,11 @@
 -module(beam_trim).
 -export([module/2]).
 
--import(lists, [reverse/1,reverse/2,splitwith/2,sort/1]).
+-import(lists, [any/2,member/2,reverse/1,reverse/2,splitwith/2,sort/1]).
 
 -record(st,
-	{safe :: gb_sets:set(beam_asm:label()), %Safe labels.
-	 lbl :: beam_utils:code_index()         %Code at each label.
-	 }).
+	{safe :: cerl_sets:set(beam_asm:label()) %Safe labels.
+        }).
 
 -spec module(beam_utils:module_code(), [compile:option()]) ->
                     {'ok',beam_utils:module_code()}.
@@ -36,10 +35,15 @@ module({Mod,Exp,Attr,Fs0,Lc}, _Opts) ->
     {ok,{Mod,Exp,Attr,Fs,Lc}}.
 
 function({function,Name,Arity,CLabel,Is0}) ->
-    %%ok = io:fwrite("~w: ~p\n", [?LINE,{Name,Arity}]),
-    St = #st{safe=safe_labels(Is0, []),lbl=beam_utils:index_labels(Is0)},
-    Is = trim(Is0, St, []),
-    {function,Name,Arity,CLabel,Is}.
+    try
+        St = #st{safe=safe_labels(Is0, [])},
+        Is = trim(Is0, St, []),
+        {function,Name,Arity,CLabel,Is}
+    catch
+        Class:Error:Stack ->
+	    io:fwrite("Function: ~w/~w\n", [Name,Arity]),
+	    erlang:raise(Class, Error, Stack)
+    end.
 
 trim([{kill,_}|_]=Is0, St, Acc) ->
     {Kills0,Is1} = splitwith(fun({kill,_}) -> true;
@@ -47,14 +51,33 @@ trim([{kill,_}|_]=Is0, St, Acc) ->
 			    end, Is0),
     Kills = sort(Kills0),
     try
-	{FrameSize,Layout} = frame_layout(Is1, Kills, St),
-	Configs = trim_instructions(Layout),
-	try_remap(Configs, Is1, FrameSize)
-	of
+        %% Find out the size and layout of the stack frame.
+        %% Example of a layout:
+        %%
+        %%    [{kill,{y,0}},{dead,{y,1},{live,{y,2}},{kill,{y,3}}]
+        %%
+        %% That means that y0 and y3 are to be killed, that y1
+        %% has been killed previously, and that y2 is live.
+        {FrameSize,Layout} = frame_layout(Is1, Kills, St),
+
+        %% Calculate all recipes that are not worse in terms
+        %% of estimated execution time. The recipes are ordered
+        %% in descending order from how much they trim.
+        Recipes = trim_recipes(Layout),
+
+        %% Try the recipes in order. A recipe may not work out because
+        %% a register that was previously killed may be
+        %% resurrected. If that happens, the next recipe, which trims
+        %% less, will be tried.
+        try_remap(Recipes, Is1, FrameSize)
+    of
 	{Is,TrimInstr} ->
+            %% One of the recipes was applied.
 	    trim(Is, St, reverse(TrimInstr)++Acc)
     catch
 	not_possible ->
+            %% No recipe worked out. Use the original kill
+            %% instructions.
 	    trim(Is1, St, reverse(Kills, Acc))
     end;
 trim([I|Is], St, Acc) ->
@@ -62,34 +85,42 @@ trim([I|Is], St, Acc) ->
 trim([], _, Acc) ->
     reverse(Acc).
 
-%% trim_instructions([{kill,R}|{live,R}|{dead,R}]) -> {[Instruction],MapFun}
-%%  Figure out the sequence of moves and trim to use.
+%% trim_recipes([{kill,R}|{live,R}|{dead,R}]) -> [Recipe].
+%%      Recipe = {Kills,NumberToTrim,Moves}
+%%      Kills = [{kill,Y}]
+%%      Moves = [{move,SrcY,DstY}]
+%%
+%%  Calculate how to best trim the stack and kill the correct
+%%  Y registers. Return a list of possible recipes. The best
+%%  recipe (the one that trims the most) is first in the list.
+%%  All of the recipes are no worse in estimated execution time
+%%  than the original sequences of kill instructions.
 
-trim_instructions(Layout) ->
+trim_recipes(Layout) ->
     Cost = length([I || {kill,_}=I <- Layout]),
-    trim_instructions_1(Layout, 0, [], {Cost,[]}).
+    trim_recipes_1(Layout, 0, [], {Cost,[]}).
 
-trim_instructions_1([{kill,{y,Trim0}}|Ks], Trim0, Moves, Config0) ->
+trim_recipes_1([{kill,{y,Trim0}}|Ks], Trim0, Moves, Recipes0) ->
     Trim = Trim0 + 1,
-    Config = save_config(Ks, Trim, Moves, Config0),
-    trim_instructions_1(Ks, Trim, Moves, Config);
-trim_instructions_1([{dead,{y,Trim0}}|Ks], Trim0, Moves, Config0) ->
+    Recipes = save_recipe(Ks, Trim, Moves, Recipes0),
+    trim_recipes_1(Ks, Trim, Moves, Recipes);
+trim_recipes_1([{dead,{y,Trim0}}|Ks], Trim0, Moves, Recipes0) ->
     Trim = Trim0 + 1,
-    Config = save_config(Ks, Trim, Moves, Config0),
-    trim_instructions_1(Ks, Trim, Moves, Config);
-trim_instructions_1([{live,{y,Trim0}=Src}|Ks0], Trim0, Moves0, Config0) ->
+    Recipes = save_recipe(Ks, Trim, Moves, Recipes0),
+    trim_recipes_1(Ks, Trim, Moves, Recipes);
+trim_recipes_1([{live,{y,Trim0}=Src}|Ks0], Trim0, Moves0, Recipes0) ->
     case take_last_dead(Ks0) of
 	none ->
-	    {_,ConfigList} = Config0,
-	    ConfigList;
+            {_,RecipesList} = Recipes0,
+            RecipesList;
 	{Dst,Ks} ->
 	    Trim = Trim0 + 1,
 	    Moves = [{move,Src,Dst}|Moves0],
-	    Config = save_config(Ks, Trim, Moves, Config0),
-	    trim_instructions_1(Ks, Trim, Moves, Config)
+            Recipes = save_recipe(Ks, Trim, Moves, Recipes0),
+            trim_recipes_1(Ks, Trim, Moves, Recipes)
     end;
-trim_instructions_1([], _, _, {_,ConfigList}) ->
-    ConfigList.
+trim_recipes_1([], _, _, {_,RecipesList}) ->
+    RecipesList.
 
 take_last_dead(L) ->
     take_last_dead_1(reverse(L)).
@@ -100,28 +131,48 @@ take_last_dead_1([{dead,Reg}|Is]) ->
     {Reg,reverse(Is)};
 take_last_dead_1(_) -> none.
 
-save_config(Ks, Trim, Moves, {MaxCost,Acc}=Config) ->
-    case config_cost(Ks, Moves) of
-	Cost when Cost =< MaxCost ->
-	    {MaxCost,[{Ks,Trim,Moves}|Acc]};
+save_recipe(Ks, Trim, Moves, {MaxCost,Acc}=Recipes) ->
+    case recipe_cost(Ks, Moves) of
+        Cost when Cost =< MaxCost ->
+            %% The price is right.
+            {MaxCost,[{Ks,Trim,Moves}|Acc]};
 	_Cost ->
-	    Config
+            %% Too expensive.
+            Recipes
     end.
 
-config_cost(Ks, Moves) ->
+recipe_cost(Ks, Moves) ->
     %% We estimate that a {move,{y,_},{y,_}} instruction is roughly twice as
     %% expensive as a {kill,{y,_}} instruction. A {trim,_} instruction is
     %% roughly as expensive as a {kill,{y,_}} instruction.
 
-    config_cost_1(Ks, 1+2*length(Moves)).
+    recipe_cost_1(Ks, 1+2*length(Moves)).
 
-config_cost_1([{kill,_}|Ks], Cost) ->
-    config_cost_1(Ks, Cost+1);
-config_cost_1([_|Ks], Cost) ->
-    config_cost_1(Ks, Cost);
-config_cost_1([], Cost) -> Cost.
+recipe_cost_1([{kill,_}|Ks], Cost) ->
+    recipe_cost_1(Ks, Cost+1);
+recipe_cost_1([_|Ks], Cost) ->
+    recipe_cost_1(Ks, Cost);
+recipe_cost_1([], Cost) -> Cost.
 
-expand_config({Layout,Trim,Moves}, FrameSize) ->
+%% try_remap([Recipe], [Instruction], FrameSize) ->
+%%           {[Instruction],[TrimInstruction]}.
+%%  Try to renumber Y registers in the instruction stream. The
+%%  first rececipe that works will be used.
+%%
+%%  This function will issue a `not_possible` exception if none
+%%  of the recipes were possible to apply.
+
+try_remap([R|Rs], Is, FrameSize) ->
+    {TrimInstr,Map} = expand_recipe(R, FrameSize),
+    try
+	{remap(Is, Map, []),TrimInstr}
+    catch
+	throw:not_possible ->
+	    try_remap(Rs, Is, FrameSize)
+    end;
+try_remap([], _, _) -> throw(not_possible).
+
+expand_recipe({Layout,Trim,Moves}, FrameSize) ->
     Kills = [Kill || {kill,_}=Kill <- Layout],
     {Kills++reverse(Moves, [{trim,Trim,FrameSize-Trim}]),create_map(Trim, Moves)}.
 
@@ -132,16 +183,16 @@ create_map(Trim, []) ->
        (Any) -> Any
     end;
 create_map(Trim, Moves) ->
-    GbTree0 = [{Src,Dst-Trim} || {move,{y,Src},{y,Dst}} <- Moves],
-    GbTree = gb_trees:from_orddict(sort(GbTree0)),
-    IllegalTargets = gb_sets:from_list([Dst || {move,_,{y,Dst}} <- Moves]),
+    Map0 = [{Src,Dst-Trim} || {move,{y,Src},{y,Dst}} <- Moves],
+    Map = maps:from_list(Map0),
+    IllegalTargets = cerl_sets:from_list([Dst || {move,_,{y,Dst}} <- Moves]),
     fun({y,Y0}) when Y0 < Trim ->
-	    case gb_trees:lookup(Y0, GbTree) of
-		{value,Y} -> {y,Y};
-		none -> throw(not_possible)
-	    end;
+            case Map of
+                #{Y0:=Y} -> {y,Y};
+                #{} -> throw(not_possible)
+            end;
        ({y,Y}) ->
-	    case gb_sets:is_element(Y, IllegalTargets) of
+	    case cerl_sets:is_element(Y, IllegalTargets) of
 		true -> throw(not_possible);
 		false -> {y,Y-Trim}
 	    end;
@@ -149,19 +200,17 @@ create_map(Trim, Moves) ->
        (Any) -> Any
     end.
 
-try_remap([C|Cs], Is, FrameSize) ->
-    {TrimInstr,Map} = expand_config(C, FrameSize),
-    try
-	{remap(Is, Map, []),TrimInstr}
-    catch
-	throw:not_possible ->
-	    try_remap(Cs, Is, FrameSize)
-    end;
-try_remap([], _, _) -> throw(not_possible).
-
+remap([{'%',_}=I|Is], Map, Acc) ->
+    remap(Is, Map, [I|Acc]);
 remap([{block,Bl0}|Is], Map, Acc) ->
     Bl = remap_block(Bl0, Map, []),
     remap(Is, Map, [{block,Bl}|Acc]);
+remap([{bs_get_tail,Src,Dst,Live}|Is], Map, Acc) ->
+    I = {bs_get_tail,Map(Src),Map(Dst),Live},
+    remap(Is, Map, [I|Acc]);
+remap([{bs_set_position,Src1,Src2}|Is], Map, Acc) ->
+    I = {bs_set_position,Map(Src1),Map(Src2)},
+    remap(Is, Map, [I|Acc]);
 remap([{call_fun,_}=I|Is], Map, Acc) ->
     remap(Is, Map, [I|Acc]);
 remap([{call,_,_}=I|Is], Map, Acc) ->
@@ -205,35 +254,68 @@ remap([return|_]=Is, _, Acc) ->
     reverse(Acc, Is);
 remap([{line,_}=I|Is], Map, Acc) ->
     remap(Is, Map, [I|Acc]).
-    
+
 remap_block([{set,Ds0,Ss0,Info}|Is], Map, Acc) ->
     Ds = [Map(D) || D <- Ds0],
     Ss = [Map(S) || S <- Ss0],
     remap_block(Is, Map, [{set,Ds,Ss,Info}|Acc]);
 remap_block([], _, Acc) -> reverse(Acc).
-    
-safe_labels([{label,L},{line,_},{badmatch,{Tag,_}}|Is], Acc) when Tag =/= y ->
-    safe_labels(Is, [L|Acc]);
-safe_labels([{label,L},{line,_},{case_end,{Tag,_}}|Is], Acc) when Tag =/= y ->
-    safe_labels(Is, [L|Acc]);
-safe_labels([{label,L},{line,_},if_end|Is], Acc) ->
-    safe_labels(Is, [L|Acc]);
-safe_labels([{label,L},
-	     {block,[{set,[{x,0}],[{Tag,_}],move}]},
-	     {line,_},
-	     {call_ext,1,{extfunc,erlang,error,1}}|Is], Acc) when Tag =/= y ->
-    safe_labels(Is, [L|Acc]);
+
+%% safe_labels([Instruction], Accumulator) -> gb_set()
+%%  Build a gb_set of safe labels. The code at a safe
+%%  label does not depend on the values in a specific
+%%  Y register, only that all Y registers are initialized
+%%  so that it safe to scan the stack when an exception
+%%  is generated.
+%%
+%%  In other words, code at a safe label will continue
+%%  to work if Y registers have been renumbered and
+%%  the size of the stack frame has changed.
+
+safe_labels([{label,L}|Is], Acc) ->
+    case is_safe_label(Is) of
+        true -> safe_labels(Is, [L|Acc]);
+        false -> safe_labels(Is, Acc)
+    end;
 safe_labels([_|Is], Acc) ->
     safe_labels(Is, Acc);
-safe_labels([], Acc) -> gb_sets:from_list(Acc).
+safe_labels([], Acc) -> cerl_sets:from_list(Acc).
+
+is_safe_label([{'%',_}|Is]) ->
+    is_safe_label(Is);
+is_safe_label([{line,_}|Is]) ->
+    is_safe_label(Is);
+is_safe_label([{badmatch,{Tag,_}}|_]) ->
+    Tag =/= y;
+is_safe_label([{case_end,{Tag,_}}|_]) ->
+    Tag =/= y;
+is_safe_label([{try_case_end,{Tag,_}}|_]) ->
+    Tag =/= y;
+is_safe_label([if_end|_]) ->
+    true;
+is_safe_label([{block,Bl}|Is]) ->
+    is_safe_label_block(Bl) andalso is_safe_label(Is);
+is_safe_label([{call_ext,_,{extfunc,M,F,A}}|_]) ->
+    erl_bifs:is_exit_bif(M, F, A);
+is_safe_label(_) -> false.
+
+is_safe_label_block([{set,Ds,Ss,_}|Is]) ->
+    IsYreg = fun({y,_}) -> true;
+                (_) -> false
+             end,
+    %% This instruction is safe if the instruction
+    %% neither reads or writes Y registers.
+    not (any(IsYreg, Ss) orelse any(IsYreg, Ds)) andalso
+        is_safe_label_block(Is);
+is_safe_label_block([]) -> true.
 
 %% frame_layout([Instruction], [{kill,_}], St) ->
 %%      [{kill,Reg} | {live,Reg} | {dead,Reg}]
 %%  Figure out the layout of the stack frame.
 
-frame_layout(Is, Kills, #st{safe=Safe,lbl=D}) ->
+frame_layout(Is, Kills, #st{safe=Safe}) ->
     N = frame_size(Is, Safe),
-    IsKilled = fun(R) -> beam_utils:is_not_used(R, Is, D) end,
+    IsKilled = fun(R) -> is_not_used(R, Is) end,
     {N,frame_layout_1(Kills, 0, N, IsKilled, [])}.
 
 frame_layout_1([{kill,{y,Y}}=I|Ks], Y, N, IsKilled, Acc) ->
@@ -253,7 +335,14 @@ frame_layout_2(Is) -> reverse(Is).
 
 %% frame_size([Instruction], SafeLabels) -> FrameSize
 %%  Find out the frame size by looking at the code that follows.
+%%
+%%  Implicitly, also check that the instructions are a straight
+%%  sequence of code that ends in a return. Any branches are
+%%  to safe labels (i.e., the code at those labels don't depend
+%%  on the contents of any Y register).
 
+frame_size([{'%',_}|Is], Safe) ->
+    frame_size(Is, Safe);
 frame_size([{block,_}|Is], Safe) ->
     frame_size(Is, Safe);
 frame_size([{call_fun,_}|Is], Safe) ->
@@ -285,15 +374,94 @@ frame_size([{make_fun2,_,_,_,_}|Is], Safe) ->
     frame_size(Is, Safe);
 frame_size([{get_map_elements,{f,L},_,_}|Is], Safe) ->
     frame_size_branch(L, Is, Safe);
-frame_size([{deallocate,N}|_], _) -> N;
+frame_size([{deallocate,N}|_], _) ->
+    N;
 frame_size([{line,_}|Is], Safe) ->
     frame_size(Is, Safe);
-frame_size([_|_], _) -> throw(not_possible).
+frame_size([{bs_set_position,_,_}|Is], Safe) ->
+    frame_size(Is, Safe);
+frame_size([{bs_get_tail,_,_,_}|Is], Safe) ->
+    frame_size(Is, Safe);
+frame_size(_, _) -> throw(not_possible).
 
 frame_size_branch(0, Is, Safe) ->
     frame_size(Is, Safe);
 frame_size_branch(L, Is, Safe) ->
-    case gb_sets:is_member(L, Safe) of
+    case cerl_sets:is_element(L, Safe) of
 	false -> throw(not_possible);
 	true -> frame_size(Is, Safe)
     end.
+
+%% is_not_used(Y, [Instruction]) -> true|false.
+%%  Test whether the value of Y is unused in the instruction sequence.
+%%  Return true if the value of Y is not used, and false if it is used.
+%%
+%%  This function handles the same instructions as frame_size/2. It
+%%  assumes that any labels in the instructions are safe labels.
+
+is_not_used(Y, [{'%',_}|Is]) ->
+    is_not_used(Y, Is);
+is_not_used(Y, [{apply,_}|Is]) ->
+    is_not_used(Y, Is);
+is_not_used(Y, [{bif,_,{f,_},Ss,Dst}|Is]) ->
+    is_not_used_ss_dst(Y, Ss, Dst, Is);
+is_not_used(Y, [{block,Bl}|Is]) ->
+    case is_not_used_block(Y, Bl) of
+        used -> false;
+        killed -> true;
+        transparent -> is_not_used(Y, Is)
+    end;
+is_not_used(Y, [{bs_get_tail,Src,Dst,_}|Is]) ->
+    is_not_used_ss_dst(Y, [Src], Dst, Is);
+is_not_used(Y, [{bs_init,_,_,_,Ss,Dst}|Is]) ->
+    is_not_used_ss_dst(Y, Ss, Dst, Is);
+is_not_used(Y, [{bs_put,{f,_},_,Ss}|Is]) ->
+    not member(Y, Ss) andalso is_not_used(Y, Is);
+is_not_used(Y, [{bs_set_position,Src1,Src2}|Is]) ->
+    Y =/= Src1 andalso Y =/= Src2 andalso
+        is_not_used(Y, Is);
+is_not_used(Y, [{call,_,_}|Is]) ->
+    is_not_used(Y, Is);
+is_not_used(Y, [{call_ext,_,_}=I|Is]) ->
+    beam_jump:is_exit_instruction(I) orelse is_not_used(Y, Is);
+is_not_used(Y, [{call_fun,_}|Is]) ->
+    is_not_used(Y, Is);
+is_not_used(_Y, [{deallocate,_}|_]) ->
+    true;
+is_not_used(Y, [{gc_bif,_,{f,_},_Live,Ss,Dst}|Is]) ->
+    is_not_used_ss_dst(Y, Ss, Dst, Is);
+is_not_used(Y, [{get_map_elements,{f,_},S,{list,List}}|Is]) ->
+    {Ss,Ds} = beam_utils:split_even(List),
+    case member(Y, [S|Ss]) of
+	true ->
+	    false;
+	false ->
+            member(Y, Ds) orelse is_not_used(Y, Is)
+    end;
+is_not_used(Y, [{kill,Yreg}|Is]) ->
+    Y =:= Yreg orelse is_not_used(Y, Is);
+is_not_used(Y, [{line,_}|Is]) ->
+    is_not_used(Y, Is);
+is_not_used(Y, [{make_fun2,_,_,_,_}|Is]) ->
+    is_not_used(Y, Is);
+is_not_used(Y, [{test,_,_,Ss}|Is]) ->
+    not member(Y, Ss) andalso is_not_used(Y, Is);
+is_not_used(Y, [{test,_Op,{f,_},_Live,Ss,Dst}|Is]) ->
+    is_not_used_ss_dst(Y, Ss, Dst, Is).
+
+is_not_used_block(Y, [{set,Ds,Ss,_}|Is]) ->
+    case member(Y, Ss) of
+        true ->
+            used;
+        false ->
+            case member(Y, Ds) of
+                true ->
+                    killed;
+                false ->
+                    is_not_used_block(Y, Is)
+            end
+    end;
+is_not_used_block(_Y, []) -> transparent.
+
+is_not_used_ss_dst(Y, Ss, Dst, Is) ->
+    not member(Y, Ss) andalso (Y =:= Dst orelse is_not_used(Y, Is)).
diff --git a/lib/compiler/src/beam_type.erl b/lib/compiler/src/beam_type.erl
deleted file mode 100644
index b5c979e529..0000000000
--- a/lib/compiler/src/beam_type.erl
+++ /dev/null
@@ -1,1117 +0,0 @@
-%%
-%% %CopyrightBegin%
-%%
-%% Copyright Ericsson AB 1999-2018. All Rights Reserved.
-%%
-%% Licensed under the Apache License, Version 2.0 (the "License");
-%% you may not use this file except in compliance with the License.
-%% You may obtain a copy of the License at
-%%
-%%     http://www.apache.org/licenses/LICENSE-2.0
-%%
-%% Unless required by applicable law or agreed to in writing, software
-%% distributed under the License is distributed on an "AS IS" BASIS,
-%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-%% See the License for the specific language governing permissions and
-%% limitations under the License.
-%%
-%% %CopyrightEnd%
-%%
-%% Purpose: Type-based optimisations. See the comment for verified_type/1
-%% the very end of this file for a description of the types in the
-%% type database.
-
--module(beam_type).
-
--export([module/2]).
-
--import(lists, [foldl/3,member/2,reverse/1,reverse/2,sort/1]).
-
--define(UNICODE_INT, {integer,{0,16#10FFFF}}).
-
--spec module(beam_utils:module_code(), [compile:option()]) ->
-                    {'ok',beam_utils:module_code()}.
-
-module({Mod,Exp,Attr,Fs0,Lc}, _Opts) ->
-    Fs = [function(F) || F <- Fs0],
-    {ok,{Mod,Exp,Attr,Fs,Lc}}.
-
-function({function,Name,Arity,CLabel,Asm0}) ->
-    try
-	Asm1 = beam_utils:live_opt(Asm0),
-	Asm2 = opt(Asm1, [], tdb_new()),
-	Asm3 = beam_utils:live_opt(Asm2),
-	Asm = beam_utils:delete_annos(Asm3),
-	{function,Name,Arity,CLabel,Asm}
-    catch
-        Class:Error:Stack ->
-	    io:fwrite("Function: ~w/~w\n", [Name,Arity]),
-	    erlang:raise(Class, Error, Stack)
-    end.
-
-%% opt([Instruction], Accumulator, TypeDb) -> {[Instruction'],TypeDb'}
-%%  Keep track of type information; try to simplify.
-
-opt([{block,Body1}|Is], [{block,Body0}|Acc], Ts0) ->
-    {Body2,Ts} = simplify(Body1, Ts0),
-    Body = merge_blocks(Body0, Body2),
-    opt(Is, [{block,Body}|Acc], Ts);
-opt([{block,Body0}|Is], Acc, Ts0) ->
-    {Body,Ts} = simplify(Body0, Ts0),
-    opt(Is, [{block,Body}|Acc], Ts);
-opt([I0|Is], Acc, Ts0) ->
-    case simplify_basic([I0], Ts0) of
-	{[],Ts} -> opt(Is, Acc, Ts);
-	{[I],Ts} -> opt(Is, [I|Acc], Ts)
-    end;
-opt([], Acc, _) -> reverse(Acc).
-
-%% simplify(Instruction, TypeDb) -> NewInstruction
-%%  Simplify an instruction using type information (this is
-%%  technically a "strength reduction").
-
-simplify(Is0, TypeDb0) ->
-    {Is,_} = BasicRes = simplify_basic(Is0, TypeDb0),
-    case simplify_float(Is, TypeDb0) of
-	not_possible -> BasicRes;
-	{_,_}=Res -> Res
-    end.
-
-%% simplify_basic([Instruction], TypeDatabase) -> {[Instruction],TypeDatabase'}
-%%  Basic simplification, mostly tuples, no floating point optimizations.
-
-simplify_basic(Is, Ts) ->
-    simplify_basic(Is, Ts, []).
-
-simplify_basic([I0|Is], Ts0, Acc) ->
-    case simplify_instr(I0, Ts0) of
-        [] ->
-            simplify_basic(Is, Ts0, Acc);
-        [I] ->
-            Ts = update(I, Ts0),
-            simplify_basic(Is, Ts, [I|Acc])
-    end;
-simplify_basic([], Ts, Acc) ->
-    {reverse(Acc),Ts}.
-
-%% simplify_instr(Instruction, Ts) -> [Instruction].
-
-%%  Simplify a simple instruction using type information. Return an
-%%  empty list if the instruction should be removed, or a list with
-%%  the original or modified instruction.
-
-simplify_instr({set,[D],[{integer,Index},Reg],{bif,element,_}}=I, Ts) ->
-    case max_tuple_size(Reg, Ts) of
-        Sz when 0 < Index, Index =< Sz ->
-            [{set,[D],[Reg],{get_tuple_element,Index-1}}];
-        _ -> [I]
-    end;
-simplify_instr({test,Test,Fail,[R]}=I, Ts) ->
-    case tdb_find(R, Ts) of
-        any ->
-            [I];
-        Type ->
-            case will_succeed(Test, Type) of
-                yes -> [];
-                no -> [{jump,Fail}];
-                maybe -> [I]
-            end
-    end;
-simplify_instr({set,[D],[TupleReg],{get_tuple_element,0}}=I, Ts) ->
-    case tdb_find(TupleReg, Ts) of
-        {tuple,_,_,[Contents]} ->
-            [{set,[D],[Contents],move}];
-        _ ->
-            [I]
-    end;
-simplify_instr({test,test_arity,_,[R,Arity]}=I, Ts) ->
-    case tdb_find(R, Ts) of
-        {tuple,exact_size,Arity,_} -> [];
-        _ -> [I]
-    end;
-simplify_instr({test,is_eq_exact,Fail,[R,{atom,A}=Atom]}=I, Ts) ->
-    case tdb_find(R, Ts) of
-        {atom,_}=Atom -> [];
-        boolean when is_boolean(A) -> [I];
-        any -> [I];
-        _ -> [{jump,Fail}]
-    end;
-simplify_instr({test,is_record,_,[R,{atom,_}=Tag,{integer,Arity}]}=I, Ts) ->
-    case tdb_find(R, Ts) of
-        {tuple,exact_size,Arity,[Tag]} -> [];
-        _ -> [I]
-    end;
-simplify_instr({select,select_val,Reg,_,_}=I, Ts) ->
-    [case tdb_find(Reg, Ts) of
-         {integer,Range} ->
-             simplify_select_val_int(I, Range);
-         boolean ->
-             simplify_select_val_bool(I);
-         _ ->
-             I
-     end];
-simplify_instr({test,bs_test_unit,_,[Src,Unit]}=I, Ts) ->
-    case tdb_find(Src, Ts) of
-        {binary,U} when U rem Unit =:= 0 -> [];
-        _ -> [I]
-    end;
-simplify_instr(I, _) -> [I].
-
-simplify_select_val_int({select,select_val,R,_,L0}=I, {Min,Max}) ->
-    Vs = sort([V || {integer,V} <- L0]),
-    case eq_ranges(Vs, Min, Max) of
-	false -> I;
-	true -> simplify_select_val_1(L0, {integer,Max}, R, [])
-    end.
-
-simplify_select_val_bool({select,select_val,R,_,L}=I) ->
-    Vs = sort([V || {atom,V} <- L]),
-    case Vs of
-	[false,true] ->
-	    simplify_select_val_1(L, {atom,false}, R, []);
-	_ ->
-	    I
-    end.
-
-simplify_select_val_1([Val,F|T], Val, R, Acc) ->
-    L = reverse(Acc, T),
-    {select,select_val,R,F,L};
-simplify_select_val_1([V,F|T], Val, R, Acc) ->
-    simplify_select_val_1(T, Val, R, [F,V|Acc]).
-
-eq_ranges([H], H, H) -> true;
-eq_ranges([H|T], H, Max) -> eq_ranges(T, H+1, Max);
-eq_ranges(_, _, _) -> false.
-
-%% will_succeed(TestOperation, Type) -> yes|no|maybe.
-%%  Test whether TestOperation applied to an argument of type Type
-%%  will succeed.  Return yes, no, or maybe.
-%%
-%%  Type is a type as described in the comment for verified_type/1 at
-%%  the very end of this file, but it will *never* be 'any'.
-
-will_succeed(is_atom, Type) ->
-    case Type of
-        {atom,_} -> yes;
-        boolean -> yes;
-        _ -> no
-    end;
-will_succeed(is_binary, Type) ->
-    case Type of
-        {binary,U} when U rem 8 =:= 0 -> yes;
-        {binary,_} -> maybe;
-        _ -> no
-    end;
-will_succeed(is_bitstr, Type) ->
-    case Type of
-        {binary,_} -> yes;
-        _ -> no
-    end;
-will_succeed(is_integer, Type) ->
-    case Type of
-        integer -> yes;
-        {integer,_} -> yes;
-        _ -> no
-    end;
-will_succeed(is_map, Type) ->
-    case Type of
-        map -> yes;
-        _ -> no
-    end;
-will_succeed(is_nonempty_list, Type) ->
-    case Type of
-        nonempty_list -> yes;
-        _ -> no
-    end;
-will_succeed(is_tuple, Type) ->
-    case Type of
-        {tuple,_,_,_} -> yes;
-        _ -> no
-    end;
-will_succeed(_, _) -> maybe.
-
-%% simplify_float([Instruction], TypeDatabase) ->
-%%                 {[Instruction],TypeDatabase'} | not_possible
-%%  Simplify floating point operations in blocks.
-%%
-simplify_float(Is0, Ts0) ->
-    {Is1,Ts} = simplify_float_1(Is0, Ts0, [], []),
-    Is2 = opt_fmoves(Is1, []),
-    Is3 = flt_need_heap(Is2),
-    try
-	{flt_liveness(Is3),Ts}
-    catch
-	throw:not_possible -> not_possible
-    end.
-
-simplify_float_1([{set,[],[],fclearerror}|Is], Ts, Rs, Acc) ->
-    simplify_float_1(Is, Ts, Rs, clearerror(Acc));
-simplify_float_1([{set,[],[],fcheckerror}|Is], Ts, Rs, Acc) ->
-    simplify_float_1(Is, Ts, Rs, checkerror(Acc));
-simplify_float_1([{set,[{fr,_}],_,_}=I|Is], Ts, Rs, Acc) ->
-    simplify_float_1(Is, Ts, Rs, [I|Acc]);
-simplify_float_1([{set,[D0],[A0],{alloc,_,{gc_bif,'-',{f,0}}}}=I|Is]=Is0,
-		 Ts0, Rs0, Acc0) ->
-    case tdb_find(A0, Ts0) of
-	float ->
-	    A = coerce_to_float(A0),
-	    {Rs1,Acc1} = load_reg(A, Ts0, Rs0, Acc0),
-	    {D,Rs} = find_dest(D0, Rs1),
-	    Areg = fetch_reg(A, Rs),
-	    Acc = [{set,[D],[Areg],{bif,fnegate,{f,0}}}|clearerror(Acc1)],
-	    Ts = tdb_store(D0, float, Ts0),
-	    simplify_float_1(Is, Ts, Rs, Acc);
-	_Other ->
-	    Ts = update(I, Ts0),
-	    {Rs,Acc} = flush(Rs0, Is0, Acc0),
-	    simplify_float_1(Is, Ts, Rs, [I|checkerror(Acc)])
-    end;
-simplify_float_1([{set,[D0],[A0,B0],{alloc,_,{gc_bif,Op0,{f,0}}}}=I|Is]=Is0,
-		 Ts0, Rs0, Acc0) ->
-    case float_op(Op0, A0, B0, Ts0) of
-	no ->
-	    Ts = update(I, Ts0),
-	    {Rs,Acc} = flush(Rs0, Is0, Acc0),
-	    simplify_float_1(Is, Ts, Rs, [I|checkerror(Acc)]);
-	{yes,Op} ->
-	    A = coerce_to_float(A0),
-	    B = coerce_to_float(B0),
-	    {Rs1,Acc1} = load_reg(A, Ts0, Rs0, Acc0),
-	    {Rs2,Acc2} = load_reg(B, Ts0, Rs1, Acc1),
-	    {D,Rs} = find_dest(D0, Rs2),
-	    Areg = fetch_reg(A, Rs),
-	    Breg = fetch_reg(B, Rs),
-	    Acc = [{set,[D],[Areg,Breg],{bif,Op,{f,0}}}|clearerror(Acc2)],
-	    Ts = tdb_store(D0, float, Ts0),
-	    simplify_float_1(Is, Ts, Rs, Acc)
-    end;
-simplify_float_1([{set,_,_,{try_catch,_,_}}=I|Is]=Is0, _Ts, Rs0, Acc0) ->
-    Acc = flush_all(Rs0, Is0, Acc0),
-    simplify_float_1(Is, tdb_new(), Rs0, [I|Acc]);
-simplify_float_1([{set,_,_,{line,_}}=I|Is], Ts, Rs, Acc) ->
-    simplify_float_1(Is, Ts, Rs, [I|Acc]);
-simplify_float_1([I|Is], Ts0, [], Acc) ->
-    Ts = update(I, Ts0),
-    simplify_float_1(Is, Ts, [], [I|Acc]);
-simplify_float_1([I|Is]=Is0, Ts0, Rs0, Acc0) ->
-    Ts = update(I, Ts0),
-    {Rs,Acc} = flush(Rs0, Is0, Acc0),
-    simplify_float_1(Is, Ts, Rs, [I|checkerror(Acc)]);
-simplify_float_1([], Ts, [], Acc) ->
-    Is = reverse(Acc),
-    {Is,Ts}.
-
-coerce_to_float({integer,I}=Int) ->
-    try float(I) of
-	F ->
-	    {float,F}
-    catch _:_ ->
-	    %% Let the overflow happen at run-time.
-	    Int
-    end;
-coerce_to_float(Other) -> Other.
-
-opt_fmoves([{set,[{x,_}=R],[{fr,_}]=Src,fmove}=I1,
-	    {set,[_]=Dst,[{x,_}=R],move}=I2|Is], Acc) ->
-    case beam_utils:is_killed_block(R, Is) of
-	false -> opt_fmoves(Is, [I2,I1|Acc]);
-	true -> opt_fmoves(Is, [{set,Dst,Src,fmove}|Acc])
-    end;
-opt_fmoves([I|Is], Acc) ->
-    opt_fmoves(Is, [I|Acc]);
-opt_fmoves([], Acc) -> reverse(Acc).
-
-clearerror(Is) ->
-    clearerror(Is, Is).
-
-clearerror([{set,[],[],fclearerror}|_], OrigIs) -> OrigIs;
-clearerror([{set,[],[],fcheckerror}|_], OrigIs) -> [{set,[],[],fclearerror}|OrigIs];
-clearerror([_|Is], OrigIs) -> clearerror(Is, OrigIs);
-clearerror([], OrigIs) -> [{set,[],[],fclearerror}|OrigIs].
-
-%% merge_blocks(Block1, Block2) -> Block.
-%%  Combine two blocks and eliminate any move instructions that assign
-%%  to registers that are killed later in the block.
-%%
-merge_blocks(B1, [{'%anno',_}|B2]) ->
-    merge_blocks_1(B1++[{set,[],[],stop_here}|B2]).
-
-merge_blocks_1([{set,[],_,stop_here}|Is]) -> Is;
-merge_blocks_1([{set,[D],_,move}=I|Is]) ->
-    case beam_utils:is_killed_block(D, Is) of
-	true -> merge_blocks_1(Is);
-	false -> [I|merge_blocks_1(Is)]
-    end;
-merge_blocks_1([I|Is]) -> [I|merge_blocks_1(Is)].
-
-%% flt_need_heap([Instruction]) -> [Instruction]
-%%  Insert need heap allocation instructions in the instruction stream
-%%  to properly account for both inserted floating point operations and
-%%  normal term build operations (such as put_list/3).
-%%
-%%  Ignore old heap allocation instructions (except if they allocate a stack
-%%  frame too), as they may be in the wrong place (because gc_bif instructions
-%%  could have been converted to floating point operations).
-
-flt_need_heap(Is) ->
-    flt_need_heap_1(reverse(Is), 0, 0, []).
-
-flt_need_heap_1([{set,[],[],{alloc,_,Alloc}}|Is], H, Fl, Acc) ->
-    case Alloc of
-	{_,nostack,_,_} ->
-	    %% Remove any existing test_heap/2 instruction.
-	    flt_need_heap_1(Is, H, Fl, Acc);
-	{Z,Stk,_,Inits} when is_integer(Stk) ->
-	    %% Keep any allocate*/2 instruction and recalculate heap need.
-	    I = {set,[],[],{alloc,regs,{Z,Stk,build_alloc(H, Fl),Inits}}},
-	    flt_need_heap_1(Is, 0, 0, [I|Acc])
-    end;
-flt_need_heap_1([I|Is], H0, Fl0, Acc) ->
-    {Ns,H1,Fl1} = flt_need_heap_2(I, H0, Fl0),
-    flt_need_heap_1(Is, H1, Fl1, [I|Ns]++Acc);
-flt_need_heap_1([], H, Fl, Acc) ->
-    flt_alloc(H, Fl) ++ Acc.
-
-%% First come all instructions that build. We pass through, while we
-%% add to the need for heap words and floats on the heap.
-flt_need_heap_2({set,[_],[{fr,_}],fmove}, H, Fl) ->
-    {[],H,Fl+1};
-flt_need_heap_2({set,_,_,put_list}, H, Fl) ->
-    {[],H+2,Fl};
-flt_need_heap_2({set,_,_,{put_tuple,_}}, H, Fl) ->
-    {[],H+1,Fl};
-flt_need_heap_2({set,_,_,put}, H, Fl) ->
-    {[],H+1,Fl};
-%% The following instructions cause the insertion of an allocation
-%% instruction if needed.
-flt_need_heap_2({set,_,_,{alloc,_,_}}, H, Fl) ->
-    {flt_alloc(H, Fl),0,0};
-flt_need_heap_2({set,_,_,{set_tuple_element,_}}, H, Fl) ->
-    {flt_alloc(H, Fl),0,0};
-flt_need_heap_2({'%anno',_}, H, Fl) ->
-    {flt_alloc(H, Fl),0,0};
-%% All other instructions are "neutral". We just pass them.
-flt_need_heap_2(_, H, Fl) ->
-    {[],H,Fl}.
-
-flt_alloc(0, 0) ->
-    [];
-flt_alloc(H, 0) ->
-    [{set,[],[],{alloc,regs,{nozero,nostack,H,[]}}}];
-flt_alloc(H, F) ->
-    [{set,[],[],{alloc,regs,{nozero,nostack,
-			     build_alloc(H, F),[]}}}].
-
-build_alloc(Words, 0) -> Words;
-build_alloc(Words, Floats) -> {alloc,[{words,Words},{floats,Floats}]}.
-
-
-%% flt_liveness([Instruction]) -> [Instruction]
-%%  (Re)calculate the number of live registers for each heap allocation
-%%  function. We base liveness of the number of register map at the
-%%  beginning of the instruction sequence.
-%%
-%%  A 'not_possible' term will be thrown if the set of live registers
-%%  is not continous at an allocation function (e.g. if {x,0} and {x,2}
-%%  are live, but not {x,1}).
-
-flt_liveness([{'%anno',{used,Regs}}=LiveInstr|Is]) ->
-    flt_liveness_1(Is, Regs, [LiveInstr]).
-
-flt_liveness_1([{set,Ds,Ss,{alloc,Live0,Alloc}}|Is], Regs0, Acc) ->
-    Live = min(Live0, live_regs(Regs0)),
-    I = {set,Ds,Ss,{alloc,Live,Alloc}},
-    Regs1 = init_regs(Live),
-    Regs = x_live(Ds, Regs1),
-    flt_liveness_1(Is, Regs, [I|Acc]);
-flt_liveness_1([{set,Ds,_,_}=I|Is], Regs0, Acc) ->
-    Regs = x_live(Ds, Regs0),
-    flt_liveness_1(Is, Regs, [I|Acc]);
-flt_liveness_1([{'%anno',_}], _Regs, Acc) ->
-    reverse(Acc).
-
-init_regs(Live) ->
-    (1 bsl Live) - 1.
-
-live_regs(Regs) ->
-    live_regs_1(Regs, 0).
-
-live_regs_1(0, N) -> N;
-live_regs_1(R, N) ->
-    case R band 1 of
-	0 -> throw(not_possible);
-	1 -> live_regs_1(R bsr 1, N+1)
-    end.
-
-x_live([{x,N}|Rs], Regs) -> x_live(Rs, Regs bor (1 bsl N));
-x_live([_|Rs], Regs) -> x_live(Rs, Regs);
-x_live([], Regs) -> Regs.
-
-%% update(Instruction, TypeDb) -> NewTypeDb
-%%  Update the type database to account for executing an instruction.
-%%
-%%  First the cases for instructions inside basic blocks.
-update({'%anno',_}, Ts) ->
-    Ts;
-update({set,[D],[S],move}, Ts) ->
-    tdb_copy(S, D, Ts);
-update({set,[D],[Index,Reg],{bif,element,_}}, Ts0) ->
-    MinSize = case Index of
-                  {integer,I} -> I;
-                  _ -> 0
-              end,
-    Ts = tdb_meet(Reg, {tuple,min_size,MinSize,[]}, Ts0),
-    tdb_store(D, any, Ts);
-update({set,[D],[_Key,Map],{bif,map_get,_}}, Ts0) ->
-    Ts = tdb_meet(Map, map, Ts0),
-    tdb_store(D, any, Ts);
-update({set,[D],Args,{bif,N,_}}, Ts) ->
-    Ar = length(Args),
-    BoolOp = erl_internal:new_type_test(N, Ar) orelse
-	erl_internal:comp_op(N, Ar) orelse
-	erl_internal:bool_op(N, Ar),
-    Type = case BoolOp of
-               true -> boolean;
-               false -> unary_op_type(N)
-           end,
-    tdb_store(D, Type, Ts);
-update({set,[D],[S],{get_tuple_element,0}}, Ts0) ->
-    if
-        D =:= S ->
-            tdb_store(D, any, Ts0);
-        true ->
-            Ts = tdb_store(D, {tuple_element,S,0}, Ts0),
-            tdb_store(S, {tuple,min_size,1,[]}, Ts)
-    end;
-update({set,[D],[S],{alloc,_,{gc_bif,float,{f,0}}}}, Ts0) ->
-    %% Make sure we reject non-numeric literal argument.
-    case possibly_numeric(S) of
-        true ->  tdb_store(D, float, Ts0);
-        false -> Ts0
-    end;
-update({set,[D],[S1,S2],{alloc,_,{gc_bif,'band',{f,0}}}}, Ts) ->
-    Type = band_type(S1, S2, Ts),
-    tdb_store(D, Type, Ts);
-update({set,[D],[S1,S2],{alloc,_,{gc_bif,'/',{f,0}}}}, Ts) ->
-    %% Make sure we reject non-numeric literals.
-    case possibly_numeric(S1) andalso possibly_numeric(S2) of
-        true -> tdb_store(D, float, Ts);
-        false -> Ts
-    end;
-update({set,[D],[S1,S2],{alloc,_,{gc_bif,Op,{f,0}}}}, Ts0) ->
-    case op_type(Op) of
-	integer ->
-	    tdb_store(D, integer, Ts0);
-        {float,_} ->
-            case {tdb_find(S1, Ts0),tdb_find(S2, Ts0)} of
-                {float,_} -> tdb_store(D, float, Ts0);
-                {_,float} -> tdb_store(D, float, Ts0);
-                {_,_} -> tdb_store(D, any, Ts0)
-            end;
-        Type ->
-            tdb_store(D, Type, Ts0)
-    end;
-update({set,[D],[_],{alloc,_,{gc_bif,Op,{f,0}}}}, Ts) ->
-    tdb_store(D, unary_op_type(Op), Ts);
-update({set,[],_Src,_Op}, Ts) ->
-    Ts;
-update({set,[D],_Src,_Op}, Ts) ->
-    tdb_store(D, any, Ts);
-update({kill,D}, Ts) ->
-    tdb_store(D, any, Ts);
-
-%% Instructions outside of blocks.
-update({test,test_arity,_Fail,[Src,Arity]}, Ts) ->
-    tdb_meet(Src, {tuple,exact_size,Arity,[]}, Ts);
-update({get_map_elements,_,Src,{list,Elems0}}, Ts0) ->
-    Ts1 = tdb_meet(Src, map, Ts0),
-    {_Ss,Ds} = beam_utils:split_even(Elems0),
-    foldl(fun(Dst, A) -> tdb_store(Dst, any, A) end, Ts1, Ds);
-update({test,is_eq_exact,_,[Reg,{atom,_}=Atom]}, Ts0) ->
-    Ts = case tdb_find_source_tuple(Reg, Ts0) of
-             {source_tuple,TupleReg} ->
-                 tdb_meet(TupleReg, {tuple,min_size,1,[Atom]}, Ts0);
-             none ->
-                 Ts0
-         end,
-    tdb_meet(Reg, Atom, Ts);
-update({test,is_record,_Fail,[Src,Tag,{integer,Arity}]}, Ts) ->
-    tdb_meet(Src, {tuple,exact_size,Arity,[Tag]}, Ts);
-
-%% Binaries and binary matching.
-
-update({test,bs_get_integer2,_,_,Args,Dst}, Ts) ->
-    tdb_store(Dst, get_bs_integer_type(Args), Ts);
-update({test,bs_get_utf8,_,_,_,Dst}, Ts) ->
-    tdb_store(Dst, ?UNICODE_INT, Ts);
-update({test,bs_get_utf16,_,_,_,Dst}, Ts) ->
-    tdb_store(Dst, ?UNICODE_INT, Ts);
-update({test,bs_get_utf32,_,_,_,Dst}, Ts) ->
-    tdb_store(Dst, ?UNICODE_INT, Ts);
-update({bs_init,_,{bs_init2,_,_},_,_,Dst}, Ts) ->
-    tdb_store(Dst, {binary,8}, Ts);
-update({bs_init,_,_,_,_,Dst}, Ts) ->
-    tdb_store(Dst, {binary,1}, Ts);
-update({bs_put,_,_,_}, Ts) ->
-    Ts;
-update({bs_save2,_,_}, Ts) ->
-    Ts;
-update({bs_restore2,_,_}, Ts) ->
-    Ts;
-update({bs_context_to_binary,Dst}, Ts) ->
-    tdb_store(Dst, any, Ts);
-update({test,bs_start_match2,_,_,[Src,_],Dst}, Ts0) ->
-    Ts = tdb_meet(Src, {binary,1}, Ts0),
-    tdb_copy(Src, Dst, Ts);
-update({test,bs_get_binary2,_,_,[_,_,Unit,_],Dst}, Ts) ->
-    true = is_integer(Unit),                    %Assertion.
-    tdb_store(Dst, {binary,Unit}, Ts);
-update({test,bs_get_float2,_,_,_,Dst}, Ts) ->
-    tdb_store(Dst, float, Ts);
-update({test,bs_test_unit,_,[Src,Unit]}, Ts) ->
-    tdb_meet(Src, {binary,Unit}, Ts);
-
-%% Other test instructions
-update({test,Test,_Fail,[Src]}, Ts) ->
-    Type = case Test of
-               is_binary -> {binary,8};
-               is_bitstr -> {binary,1};
-               is_boolean -> boolean;
-               is_float -> float;
-               is_integer -> integer;
-               is_map -> map;
-               is_nonempty_list -> nonempty_list;
-               _ -> any
-           end,
-    tdb_meet(Src, Type, Ts);
-update({test,_Test,_Fail,_Other}, Ts) ->
-    Ts;
-
-%% Calls
-
-update({call_ext,Ar,{extfunc,math,Math,Ar}}, Ts) ->
-    case is_math_bif(Math, Ar) of
-	true -> tdb_store({x,0}, float, Ts);
-	false -> tdb_kill_xregs(Ts)
-    end;
-update({call_ext,3,{extfunc,erlang,setelement,3}}, Ts0) ->
-    Ts = tdb_kill_xregs(Ts0),
-    case tdb_find({x,1}, Ts0) of
-	{tuple,SzKind,Sz,_}=T0 ->
-	    T = case tdb_find({x,0}, Ts0) of
-		    {integer,{I,I}} when I > 1 ->
-			%% First element is not changed. The result
-			%% will have the same type.
-			T0;
-		    _ ->
-			%% Position is 1 or unknown. May change the
-			%% first element of the tuple.
-			{tuple,SzKind,Sz,[]}
-		end,
-            tdb_store({x,0}, T, Ts);
-	_ ->
-	    Ts
-    end;
-update({call,_Arity,_Func}, Ts) -> tdb_kill_xregs(Ts);
-update({call_ext,_Arity,_Func}, Ts) -> tdb_kill_xregs(Ts);
-update({make_fun2,_,_,_,_}, Ts) -> tdb_kill_xregs(Ts);
-update({call_fun, _}, Ts) -> tdb_kill_xregs(Ts);
-update({apply, _}, Ts) -> tdb_kill_xregs(Ts);
-
-update({line,_}, Ts) -> Ts;
-update({'%',_}, Ts) -> Ts;
-
-%% The instruction is unknown.  Kill all information.
-update(_I, _Ts) -> tdb_new().
-
-band_type({integer,Int}, Other, Ts) ->
-    band_type_1(Int, Other, Ts);
-band_type(Other, {integer,Int}, Ts) ->
-    band_type_1(Int, Other, Ts);
-band_type(_, _, _) -> integer.
-
-band_type_1(Int, OtherSrc, Ts) ->
-    Type = band_type_2(Int, 0),
-    OtherType = tdb_find(OtherSrc, Ts),
-    meet(Type, OtherType).
-
-band_type_2(N, Bits) when Bits < 64 ->
-    case 1 bsl Bits of
-	P when P =:= N + 1 ->
-	    {integer,{0,N}};
-	P when P > N + 1 ->
-	    integer;
-	_ ->
-	    band_type_2(N, Bits+1)
-    end;
-band_type_2(_, _) ->
-    %% Negative or large positive number. Give up.
-    integer.
-
-get_bs_integer_type([_,{integer,N},U,{field_flags,Fl}])
-  when N*U < 64 ->
-    NumBits = N*U,
-    case member(unsigned, Fl) of
-	true ->
-	    {integer,{0,(1 bsl NumBits)-1}};
-	false ->
-	    %% Signed integer. Don't bother.
-	    integer
-    end;
-get_bs_integer_type(_) ->
-    %% Avoid creating ranges with a huge upper limit.
-    integer.
-
-is_math_bif(cos, 1) -> true;
-is_math_bif(cosh, 1) -> true;
-is_math_bif(sin, 1) -> true;
-is_math_bif(sinh, 1) -> true;
-is_math_bif(tan, 1) -> true;
-is_math_bif(tanh, 1) -> true;
-is_math_bif(acos, 1) -> true;
-is_math_bif(acosh, 1) -> true;
-is_math_bif(asin, 1) -> true;
-is_math_bif(asinh, 1) -> true;
-is_math_bif(atan, 1) -> true;
-is_math_bif(atanh, 1) -> true;
-is_math_bif(erf, 1) -> true;
-is_math_bif(erfc, 1) -> true;
-is_math_bif(exp, 1) -> true;
-is_math_bif(log, 1) -> true;
-is_math_bif(log2, 1) -> true;
-is_math_bif(log10, 1) -> true;
-is_math_bif(sqrt, 1) -> true;
-is_math_bif(atan2, 2) -> true;
-is_math_bif(pow, 2) -> true;
-is_math_bif(ceil, 1) -> true;
-is_math_bif(floor, 1) -> true;
-is_math_bif(fmod, 2) -> true;
-is_math_bif(pi, 0) -> true;
-is_math_bif(_, _) -> false.
-
-%% Reject non-numeric literals.
-possibly_numeric({x,_}) -> true;
-possibly_numeric({y,_}) -> true;
-possibly_numeric({integer,_}) -> true;
-possibly_numeric({float,_}) -> true;
-possibly_numeric(_) -> false.
-
-max_tuple_size(Reg, Ts) ->
-    case tdb_find(Reg, Ts) of
-	{tuple,_,Sz,_} -> Sz;
-	_Other -> 0
-    end.
-
-float_op('/', A, B, _) ->
-    case possibly_numeric(A) andalso possibly_numeric(B) of
-	true -> {yes,fdiv};
-	false -> no
-    end;
-float_op(Op, {float,_}, B, _) ->
-    case possibly_numeric(B) of
-	true -> arith_op(Op);
-	false -> no
-    end;
-float_op(Op, A, {float,_}, _) ->
-    case possibly_numeric(A) of
-	true -> arith_op(Op);
-	false -> no
-    end;
-float_op(Op, A, B, Ts) ->
-    case {tdb_find(A, Ts),tdb_find(B, Ts)} of
-	{float,_} -> arith_op(Op);
-	{_,float} -> arith_op(Op);
-	{_,_} -> no
-    end.
-
-find_dest(V, Rs0) ->
-    case find_reg(V, Rs0) of
-	{ok,FR} ->
-	    {FR,mark(V, Rs0, dirty)};
-	error ->
-	    Rs = put_reg(V, Rs0, dirty),
-	    {ok,FR} = find_reg(V, Rs),
-	    {FR,Rs}
-    end.
-
-load_reg({float,_}=F, _, Rs0, Is0) ->
-    Rs = put_reg(F, Rs0, clean),
-    {ok,FR} = find_reg(F, Rs),
-    Is = [{set,[FR],[F],fmove}|Is0],
-    {Rs,Is};
-load_reg(V, Ts, Rs0, Is0) ->
-    case find_reg(V, Rs0) of
-	{ok,_FR} -> {Rs0,Is0};
-	error ->
-	    Rs = put_reg(V, Rs0, clean),
-	    {ok,FR} = find_reg(V, Rs),
-	    Op = case tdb_find(V, Ts) of
-		     float -> fmove;
-		     _ -> fconv
-		 end,
-	    Is = [{set,[FR],[V],Op}|Is0],
-	    {Rs,Is}
-    end.
-
-arith_op(Op) ->
-    case op_type(Op) of
-	{float,Instr} -> {yes,Instr};
-	_ -> no
-    end.
-
-op_type('+') -> {float,fadd};
-op_type('-') -> {float,fsub};
-op_type('*') -> {float,fmul};
-%% '/' and 'band' are specially handled.
-op_type('bor') -> integer;
-op_type('bxor') -> integer;
-op_type('bsl') -> integer;
-op_type('bsr') -> integer;
-op_type('div') -> integer;
-op_type(_) -> any.
-
-unary_op_type(bit_size) -> integer;
-unary_op_type(byte_size) -> integer;
-unary_op_type(length) -> integer;
-unary_op_type(map_size) -> integer;
-unary_op_type(size) -> integer;
-unary_op_type(tuple_size) -> integer;
-unary_op_type(_) -> any.
-
-flush(Rs, [{set,[_],[_,_,_],{bif,is_record,_}}|_]=Is0, Acc0) ->
-    Acc = flush_all(Rs, Is0, Acc0),
-    {[],Acc};
-flush(Rs, [{set,[_],[],{put_tuple,_}}|_]=Is0, Acc0) ->
-    Acc = flush_all(Rs, Is0, Acc0),
-    {[],Acc};
-flush(Rs0, [{set,Ds,Ss,_Op}|_], Acc0) ->
-    Save = cerl_sets:from_list(Ss),
-    Acc = save_regs(Rs0, Save, Acc0),
-    Rs1 = foldl(fun(S, A) -> mark(S, A, clean) end, Rs0, Ss),
-    Kill = cerl_sets:from_list(Ds),
-    Rs = kill_regs(Rs1, Kill),
-    {Rs,Acc};
-flush(Rs0, Is, Acc0) ->
-    Acc = flush_all(Rs0, Is, Acc0),
-    {[],Acc}.
-
-flush_all([{_,{float,_},_}|Rs], Is, Acc) ->
-    flush_all(Rs, Is, Acc);
-flush_all([{I,V,dirty}|Rs], Is, Acc0) ->
-    Acc = checkerror(Acc0),
-    case beam_utils:is_killed_block(V, Is) of
-	true  -> flush_all(Rs, Is, Acc);
-	false -> flush_all(Rs, Is, [{set,[V],[{fr,I}],fmove}|Acc])
-    end;
-flush_all([{_,_,clean}|Rs], Is, Acc) -> flush_all(Rs, Is, Acc);
-flush_all([free|Rs], Is, Acc) -> flush_all(Rs, Is, Acc);
-flush_all([], _, Acc) -> Acc.
-
-save_regs(Rs, Save, Acc) ->
-    foldl(fun(R, A) -> save_reg(R, Save, A) end, Acc, Rs).
-
-save_reg({I,V,dirty}, Save, Acc) ->
-    case cerl_sets:is_element(V, Save) of
-	true -> [{set,[V],[{fr,I}],fmove}|checkerror(Acc)];
-	false -> Acc
-    end;
-save_reg(_, _, Acc) -> Acc.
-
-kill_regs(Rs, Kill) ->
-    [kill_reg(R, Kill) || R <- Rs].
-
-kill_reg({_,V,_}=R, Kill) ->
-    case cerl_sets:is_element(V, Kill) of
-	true -> free;
-	false -> R
-    end;
-kill_reg(R, _) -> R.
-
-mark(V, [{I,V,_}|Rs], Mark) -> [{I,V,Mark}|Rs];
-mark(V, [R|Rs], Mark) -> [R|mark(V, Rs, Mark)];
-mark(_, [], _) -> [].
-
-fetch_reg(V, [{I,V,_}|_]) -> {fr,I};
-fetch_reg(V, [_|SRs]) -> fetch_reg(V, SRs).
-
-find_reg(V, [{I,V,_}|_]) -> {ok,{fr,I}};
-find_reg(V, [_|SRs]) -> find_reg(V, SRs);
-find_reg(_, []) -> error.
-
-put_reg(V, Rs, Dirty) -> put_reg_1(V, Rs, Dirty, 0).
-
-put_reg_1(V, [free|Rs], Dirty, I) -> [{I,V,Dirty}|Rs];
-put_reg_1(V, [R|Rs], Dirty, I) -> [R|put_reg_1(V, Rs, Dirty, I+1)];
-put_reg_1(V, [], Dirty, I) -> [{I,V,Dirty}].
-
-checkerror(Is) ->
-    checkerror_1(Is, Is).
-
-checkerror_1([{set,[],[],fcheckerror}|_], OrigIs) -> OrigIs;
-checkerror_1([{set,_,_,{bif,fadd,_}}|_], OrigIs) -> checkerror_2(OrigIs);
-checkerror_1([{set,_,_,{bif,fsub,_}}|_], OrigIs) -> checkerror_2(OrigIs);
-checkerror_1([{set,_,_,{bif,fmul,_}}|_], OrigIs) -> checkerror_2(OrigIs);
-checkerror_1([{set,_,_,{bif,fdiv,_}}|_], OrigIs) -> checkerror_2(OrigIs);
-checkerror_1([{set,_,_,{bif,fnegate,_}}|_], OrigIs) -> checkerror_2(OrigIs);
-checkerror_1([_|Is], OrigIs) -> checkerror_1(Is, OrigIs);
-checkerror_1([], OrigIs) -> OrigIs.
-
-checkerror_2(OrigIs) -> [{set,[],[],fcheckerror}|OrigIs].
-
-
-%%% Routines for maintaining a type database.  The type database
-%%% associates type information with registers.
-%%%
-%%% See the comment for verified_type/1 at the end of module for
-%%% a description of the possible types.
-
-%% tdb_new() -> EmptyDataBase
-%%  Creates a new, empty type database.
-
-tdb_new() -> [].
-
-%% tdb_find(Register, Db) -> Type
-%%  Returns type information or the atom error if there is no type
-%%  information available for Register.
-%%
-%%  See the comment for verified_type/1 at the end of module for
-%%  a description of the possible types.
-
-tdb_find(Reg, Ts) ->
-    case tdb_find_raw(Reg, Ts) of
-        {tuple_element,_,_} -> any;
-        Type -> Type
-    end.
-
-%% tdb_find_source_tuple(Register, Ts) -> {source_tuple,Register} | 'none'.
-%%  Find the tuple whose first element was fetched to the register Register.
-
-tdb_find_source_tuple(Reg, Ts) ->
-    case tdb_find_raw(Reg, Ts) of
-        {tuple_element,Src,0} ->
-            {source_tuple,Src};
-        _ ->
-            none
-    end.
-
-%% tdb_copy(Source, Dest, Db) -> Db'
-%%  Update the type information for Dest to have the same type
-%%  as the Source.
-
-tdb_copy({Tag,_}=S, D, Ts) when Tag =:= x; Tag =:= y ->
-    case tdb_find_raw(S, Ts) of
-        any -> orddict:erase(D, Ts);
-        Type -> orddict:store(D, Type, Ts)
-    end;
-tdb_copy(Literal, D, Ts) ->
-    Type = case Literal of
-	       {atom,_} -> Literal;
-	       {float,_} -> float;
-	       {integer,Int} -> {integer,{Int,Int}};
-	       {literal,[_|_]} -> nonempty_list;
-	       {literal,#{}} -> map;
-	       {literal,Tuple} when tuple_size(Tuple) >= 1 ->
-		   Lit = tag_literal(element(1, Tuple)),
-		   {tuple,exact_size,tuple_size(Tuple),[Lit]};
-	       _ -> any
-	   end,
-    tdb_store(D, verified_type(Type), Ts).
-
-%% tdb_store(Register, Type, Ts0) -> Ts.
-%%  Store a new type for register Register. Return the update type
-%%  database. Use this function when a new value is assigned to
-%%  a register.
-%%
-%%  See the comment for verified_type/1 at the end of module for
-%%  a description of the possible types.
-
-tdb_store(Reg, any, Ts) ->
-    erase(Reg, Ts);
-tdb_store(Reg, Type, Ts) ->
-    store(Reg, verified_type(Type), Ts).
-
-store(Key, New, [{K,_}|_]=Dict) when Key < K ->
-    [{Key,New}|Dict];
-store(Key, New, [{K,Val}=E|Dict]) when Key > K ->
-    case Val of
-        {tuple_element,Key,_} -> store(Key, New, Dict);
-        _ -> [E|store(Key, New, Dict)]
-    end;
-store(Key, New, [{_K,Old}|Dict]) ->		%Key == K
-    case Old of
-        {tuple,_,_,_} ->
-            [{Key,New}|erase_tuple_element(Key, Dict)];
-        _ ->
-            [{Key,New}|Dict]
-    end;
-store(Key, New, []) -> [{Key,New}].
-
-erase(Key, [{K,_}=E|Dict]) when Key < K ->
-    [E|Dict];
-erase(Key, [{K,Val}=E|Dict]) when Key > K ->
-    case Val of
-        {tuple_element,Key,_} -> erase(Key, Dict);
-        _ -> [E|erase(Key, Dict)]
-    end;
-erase(Key, [{_K,Val}|Dict]) ->                 %Key == K
-    case Val of
-        {tuple,_,_,_} -> erase_tuple_element(Key, Dict);
-        _ -> Dict
-    end;
-erase(_, []) -> [].
-
-erase_tuple_element(Key, [{_,{tuple_element,Key,_}}|Dict]) ->
-    erase_tuple_element(Key, Dict);
-erase_tuple_element(Key, [E|Dict]) ->
-    [E|erase_tuple_element(Key, Dict)];
-erase_tuple_element(_Key, []) -> [].
-
-%% tdb_meet(Register, Type, Ts0) -> Ts.
-%%  Update information of a register that is used as the source for an
-%%  instruction. The type Type will be combined using the meet operation
-%%  with the previous type information for the register, resulting in
-%%  narrower (more specific) type.
-%%
-%%  For example, if the previous type is {tuple,min_size,2,[]} and the
-%%  the new type is {tuple,exact_size,5,[]}, the meet of the types will
-%%  be {tuple,exact_size,5,[]}.
-%%
-%%  See the comment for verified_type/1 at the end of module for
-%%  a description of the possible types.
-
-tdb_meet(Reg, NewType, Ts) ->
-    Update = fun(Type0) -> meet(Type0, NewType) end,
-    orddict:update(Reg, Update, NewType, Ts).
-
-%%%
-%%% Here follows internal helper functions for accessing and
-%%% updating the type database.
-%%%
-
-tdb_find_raw({x,_}=K, Ts) -> tdb_find_raw_1(K, Ts);
-tdb_find_raw({y,_}=K, Ts) -> tdb_find_raw_1(K, Ts);
-tdb_find_raw(_, _) -> any.
-
-tdb_find_raw_1(K, Ts) ->
-    case orddict:find(K, Ts) of
-	{ok,Val} -> Val;
-	error -> any
-    end.
-
-tag_literal(A) when is_atom(A) -> {atom,A};
-tag_literal(F) when is_float(F) -> {float,F};
-tag_literal(I) when is_integer(I) -> {integer,I};
-tag_literal([]) -> nil;
-tag_literal(Lit) -> {literal,Lit}.
-
-%% tdb_kill_xregs(Db) -> NewDb
-%%  Kill all information about x registers. Also kill all tuple_element
-%%  dependencies from y registers to x registers.
-
-tdb_kill_xregs([{{x,_},_Type}|Db]) -> tdb_kill_xregs(Db);
-tdb_kill_xregs([{{y,_},{tuple_element,{x,_},_}}|Db]) -> tdb_kill_xregs(Db);
-tdb_kill_xregs([Any|Db]) -> [Any|tdb_kill_xregs(Db)];
-tdb_kill_xregs([]) -> [].
-
-%% meet(Type1, Type2) -> Type
-%%  Returns the "meet" of Type1 and Type2. The meet is a narrower
-%%  type than Type1 and Type2. For example:
-%%
-%%     meet(integer, {integer,{0,3}}) -> {integer,{0,3}}
-%%
-%%  The meet for two different types result in 'none', which is
-%%  the bottom element for our type lattice:
-%%
-%%     meet(integer, map) -> none
-
-meet(T, T) ->
-    T;
-meet({integer,_}=T, integer) ->
-    T;
-meet(integer, {integer,_}=T) ->
-    T;
-meet({integer,{Min1,Max1}}, {integer,{Min2,Max2}}) ->
-    {integer,{max(Min1, Min2),min(Max1, Max2)}};
-meet({tuple,min_size,Sz1,Same}, {tuple,min_size,Sz2,Same}=Max) when Sz1 < Sz2 ->
-    Max;
-meet({tuple,min_size,Sz1,Same}=Max, {tuple,min_size,Sz2,Same}) when Sz1 > Sz2 ->
-    Max;
-meet({tuple,exact_size,_,Same}=Exact, {tuple,_,_,Same}) ->
-    Exact;
-meet({tuple,_,_,Same},{tuple,exact_size,_,Same}=Exact) ->
-    Exact;
-meet({tuple,SzKind1,Sz1,[]}, {tuple,_SzKind2,_Sz2,First}=Tuple2) ->
-    meet({tuple,SzKind1,Sz1,First}, Tuple2);
-meet({tuple,_SzKind1,_Sz1,First}=Tuple1, {tuple,SzKind2,Sz2,_}) ->
-    meet(Tuple1, {tuple,SzKind2,Sz2,First});
-meet({binary,U1}, {binary,U2}) ->
-    {binary,max(U1, U2)};
-meet(T1, T2) ->
-    case is_any(T1) of
-        true ->
-            verified_type(T2);
-        false ->
-            case is_any(T2) of
-                true ->
-                    verified_type(T1);
-                false ->
-                    none                        %The bottom element.
-            end
-    end.
-
-is_any(any) -> true;
-is_any({tuple_element,_,_}) -> true;
-is_any(_) -> false.
-
-%% verified_type(Type) -> Type
-%%  Returns the passed in type if it is one of the defined types.
-%%  Crashes if there is anything wrong with the type.
-%%
-%%  Here are all possible types:
-%%
-%%  any                  Any Erlang term (top element for the type lattice).
-%%
-%%  {atom,Atom}          The specific atom Atom.
-%%  {binary,Unit}        Binary/bitstring aligned to unit Unit.
-%%  boolean              'true' | 'false'
-%%  float                Floating point number.
-%%  integer              Integer.
-%%  {integer,{Min,Max}}  Integer in the inclusive range Min through Max.
-%%  map                  Map.
-%%  nonempty_list        Nonempty list.
-%%  {tuple,_,_,_}        Tuple (see below).
-%%
-%%  none                 No type (bottom element for the type lattice).
-%%
-%%  {tuple,min_size,Size,First} means that the corresponding register
-%%  contains a tuple with *at least* Size elements (conversely,
-%%  {tuple,exact_size,Size,First} means that it contains a tuple with
-%%  *exactly* Size elements). An tuple with unknown size is
-%%  represented as {tuple,min_size,0,[]}. First is either [] (meaning
-%%  that the tuple's first element is unknown) or [FirstElement] (the
-%%  contents of the first element).
-%%
-%%  There is also a pseudo-type called {tuple_element,_,_}:
-%%
-%%    {tuple_element,SrcTuple,ElementNumber}
-%%
-%%  that does not provide any information about the type of the
-%%  register itself, but provides a link back to the source tuple that
-%%  the register got its value from.
-%%
-%%  Note that {tuple_element,_,_} will *never* be returned by tdb_find/2.
-%%  Use tdb_find_source_tuple/2 to locate the source tuple for a register.
-
-verified_type(any=T) -> T;
-verified_type({atom,_}=T) -> T;
-verified_type({binary,U}=T) when is_integer(U) -> T;
-verified_type(boolean=T) -> T;
-verified_type(integer=T) -> T;
-verified_type({integer,{Min,Max}}=T)
-  when is_integer(Min), is_integer(Max) -> T;
-verified_type(map=T) -> T;
-verified_type(nonempty_list=T) -> T;
-verified_type({tuple,_,Sz,[]}=T) when is_integer(Sz) -> T;
-verified_type({tuple,_,Sz,[_]}=T) when is_integer(Sz) -> T;
-verified_type({tuple_element,_,_}=T) -> T;
-verified_type(float=T) -> T.
diff --git a/lib/compiler/src/beam_utils.erl b/lib/compiler/src/beam_utils.erl
index 6b2ab5a2a4..6e6574c0b3 100644
--- a/lib/compiler/src/beam_utils.erl
+++ b/lib/compiler/src/beam_utils.erl
@@ -18,29 +18,16 @@
 %% %CopyrightEnd%
 %%
 %% Purpose : Common utilities used by several optimization passes.
-%% 
+%%
 
 -module(beam_utils).
--export([is_killed_block/2,is_killed/3,is_killed_at/3,
-	 is_not_used/3,usage/3,
-	 empty_label_index/0,index_label/3,index_labels/1,replace_labels/4,
-	 code_at/2,bif_to_test/3,is_pure_test/1,
-	 live_opt/1,delete_annos/1,combine_heap_needs/2,
-         anno_defs/1,
-	 split_even/1
-        ]).
+-export([replace_labels/4,is_pure_test/1,split_even/1]).
 
 -export_type([code_index/0,module_code/0,instruction/0]).
 
--import(lists, [flatmap/2,map/2,member/2,sort/1,reverse/1,splitwith/2]).
-
--define(is_const(Val), (Val =:= nil orelse
-                        element(1, Val) =:= integer orelse
-                        element(1, Val) =:= float orelse
-                        element(1, Val) =:= atom orelse
-                        element(1, Val) =:= literal)).
+-import(lists, [map/2,reverse/1]).
 
-%% instruction() describes all instructions that are used during optimzation
+%% instruction() describes all instructions that are used during optimization
 %% (from beam_a to beam_z).
 -type instruction() :: atom() | tuple().
 
@@ -56,137 +43,6 @@
 -type fail() :: beam_asm:fail() | 'fail'.
 -type test() :: {'test',atom(),fail(),[beam_asm:src()]} |
 		{'test',atom(),fail(),integer(),list(),beam_asm:reg()}.
--type result_cache() :: gb_trees:tree(beam_asm:label(), 'killed' | 'used').
-
--record(live,
-	{lbl :: code_index(),            %Label to code index.
-	 res :: result_cache()}).        %Result cache for each label.
-
-%% usage(Register, [Instruction], State) -> killed|not_used|used.
-%%  Determine the usage of Register in the instruction sequence.
-%%  The return value is one of:
-%%
-%%  killed   - The register is not used in any way.
-%%  not_used - The register is referenced only by an allocating instruction
-%%             (the actual value does not matter).
-%%  used     - The register is used (its value do matter).
-
--spec usage(beam_asm:reg(), [instruction()], code_index()) ->
-  'killed' | 'not_used' | 'used'.
-
-usage(R, Is, D) ->
-    St = #live{lbl=D,res=gb_trees:empty()},
-    {Usage,_} = check_liveness(R, Is, St),
-    Usage.
-
-
-%% is_killed_block(Register, [Instruction]) -> true|false
-%%  Determine whether a register is killed by the instruction sequence inside
-%%  a block.
-%%
-%%  If true is returned, it means that the register will not be
-%%  referenced in ANY way (not even indirectly by an allocate instruction);
-%%  i.e. it is OK to enter the instruction sequence with Register
-%%  containing garbage.
-
--spec is_killed_block(beam_asm:reg(), [instruction()]) -> boolean().
-
-is_killed_block({x,X}, [{set,_,_,{alloc,Live,_}}|_]) ->
-    X >= Live;
-is_killed_block(R, [{set,Ds,Ss,_Op}|Is]) ->
-    not member(R, Ss) andalso (member(R, Ds) orelse is_killed_block(R, Is));
-is_killed_block(R, [{'%anno',{used,Regs}}|Is]) ->
-    case R of
-	{x,X} when (Regs bsr X) band 1 =:= 0 -> true;
-	_ -> is_killed_block(R, Is)
-    end;
-is_killed_block(_, []) -> false.
-
-%% is_killed(Register, [Instruction], State) -> true|false
-%%  Determine whether a register is killed by the instruction sequence.
-%%  If true is returned, it means that the register will not be
-%%  referenced in ANY way (not even indirectly by an allocate instruction);
-%%  i.e. it is OK to enter the instruction sequence with Register
-%%  containing garbage.
-%%
-%%  The state (constructed by index_instructions/1) is used to allow us
-%%  to determine the kill state across branches.
-
--spec is_killed(beam_asm:reg(), [instruction()], code_index()) -> boolean().
-
-is_killed(R, Is, D) ->
-    St = #live{lbl=D,res=gb_trees:empty()},
-    case check_liveness(R, Is, St) of
-	{killed,_} -> true;
-	{exit_not_used,_} -> false;
-	{_,_} -> false
-    end.
-
-%% is_killed_at(Reg, Lbl, State) -> true|false
-%%  Determine whether Reg is killed at label Lbl.
-
--spec is_killed_at(beam_asm:reg(), beam_asm:label(), code_index()) -> boolean().
-
-is_killed_at(R, Lbl, D) when is_integer(Lbl) ->
-    St0 = #live{lbl=D,res=gb_trees:empty()},
-    case check_liveness_at(R, Lbl, St0) of
-	{killed,_} -> true;
-	{exit_not_used,_} -> false;
-	{_,_} -> false
-    end.
-
-%% is_not_used(Register, [Instruction], State) -> true|false
-%%  Determine whether a register is never used in the instruction sequence
-%%  (it could still be referenced by an allocate instruction, meaning that
-%%  it MUST be initialized, but that its value does not matter).
-%%    The state is used to allow us to determine the usage state
-%%  across branches.
-
--spec is_not_used(beam_asm:reg(), [instruction()], code_index()) -> boolean().
-
-is_not_used(R, Is, D) ->
-    St = #live{lbl=D,res=gb_trees:empty()},
-    case check_liveness(R, Is, St) of
-	{used,_} -> false;
-	{exit_not_used,_} -> true;
-	{_,_} -> true
-    end.
-
-%% index_labels(FunctionIs) -> State
-%%  Index the instruction sequence so that we can quickly
-%%  look up the instruction following a specific label.
-
--spec index_labels([instruction()]) -> code_index().
-
-index_labels(Is) ->
-    index_labels_1(Is, []).
-
-%% empty_label_index() -> State
-%%  Create an empty label index.
-
--spec empty_label_index() -> code_index().
-
-empty_label_index() ->
-    gb_trees:empty().
-
-%% index_label(Label, [Instruction], State) -> State
-%%  Add an index for a label.
-
--spec index_label(beam_asm:label(), [instruction()], code_index()) ->
-   code_index().
-
-index_label(Lbl, Is0, Acc) ->
-    Is = drop_labels(Is0),
-    gb_trees:enter(Lbl, Is, Acc).
-
-
-%% code_at(Label, State) -> [I].
-%%  Retrieve the code at the given label.
-
--spec code_at(beam_asm:label(), code_index()) -> [instruction()].
-
-code_at(L, Ll) ->
-    gb_trees:get(L, Ll).
 
 %% replace_labels(FunctionIs, Tail, ReplaceDb, Fallback) -> FunctionIs.
 %%  Replace all labels in instructions according to the ReplaceDb.
@@ -200,49 +56,6 @@ code_at(L, Ll) ->
 replace_labels(Is, Acc, D, Fb) ->
     replace_labels_1(Is, Acc, D, Fb).
 
-%% bif_to_test(Bif, [Op], Fail) -> {test,Test,Fail,[Op]}
-%%  Convert a BIF to a test. Fail if not possible.
-
--spec bif_to_test(atom(), list(), fail()) -> test().
-
-bif_to_test(is_atom,     [_]=Ops, Fail) -> {test,is_atom,Fail,Ops};
-bif_to_test(is_boolean,  [_]=Ops, Fail) -> {test,is_boolean,Fail,Ops};
-bif_to_test(is_binary,   [_]=Ops, Fail) -> {test,is_binary,Fail,Ops};
-bif_to_test(is_bitstring,[_]=Ops, Fail) -> {test,is_bitstr,Fail,Ops};
-bif_to_test(is_float,    [_]=Ops, Fail) -> {test,is_float,Fail,Ops};
-bif_to_test(is_function, [_]=Ops, Fail) -> {test,is_function,Fail,Ops};
-bif_to_test(is_function, [_,_]=Ops, Fail) -> {test,is_function2,Fail,Ops};
-bif_to_test(is_integer,  [_]=Ops, Fail) -> {test,is_integer,Fail,Ops};
-bif_to_test(is_list,     [_]=Ops, Fail) -> {test,is_list,Fail,Ops};
-bif_to_test(is_map,      [_]=Ops, Fail) -> {test,is_map,Fail,Ops};
-bif_to_test(is_number,   [_]=Ops, Fail) -> {test,is_number,Fail,Ops};
-bif_to_test(is_pid,      [_]=Ops, Fail) -> {test,is_pid,Fail,Ops};
-bif_to_test(is_port,     [_]=Ops, Fail) -> {test,is_port,Fail,Ops};
-bif_to_test(is_reference, [_]=Ops, Fail) -> {test,is_reference,Fail,Ops};
-bif_to_test(is_tuple,    [_]=Ops, Fail)     -> {test,is_tuple,Fail,Ops};
-bif_to_test('=<', [A,B], Fail) -> {test,is_ge,Fail,[B,A]};
-bif_to_test('>', [A,B], Fail) -> {test,is_lt,Fail,[B,A]};
-bif_to_test('<', [_,_]=Ops, Fail) -> {test,is_lt,Fail,Ops};
-bif_to_test('>=', [_,_]=Ops, Fail) -> {test,is_ge,Fail,Ops};
-bif_to_test('==', [A,nil], Fail) -> {test,is_nil,Fail,[A]};
-bif_to_test('==', [nil,A], Fail) -> {test,is_nil,Fail,[A]};
-bif_to_test('==', [C,A], Fail) when ?is_const(C) ->
-    {test,is_eq,Fail,[A,C]};
-bif_to_test('==', [_,_]=Ops, Fail) -> {test,is_eq,Fail,Ops};
-bif_to_test('/=', [C,A], Fail) when ?is_const(C) ->
-    {test,is_ne,Fail,[A,C]};
-bif_to_test('/=', [_,_]=Ops, Fail) -> {test,is_ne,Fail,Ops};
-bif_to_test('=:=', [A,nil], Fail) -> {test,is_nil,Fail,[A]};
-bif_to_test('=:=', [nil,A], Fail) -> {test,is_nil,Fail,[A]};
-bif_to_test('=:=', [C,A], Fail) when ?is_const(C) ->
-    {test,is_eq_exact,Fail,[A,C]};
-bif_to_test('=:=', [_,_]=Ops, Fail) -> {test,is_eq_exact,Fail,Ops};
-bif_to_test('=/=', [C,A], Fail) when ?is_const(C) ->
-    {test,is_ne_exact,Fail,[A,C]};
-bif_to_test('=/=', [_,_]=Ops, Fail) -> {test,is_ne_exact,Fail,Ops};
-bif_to_test(is_record, [_,_,_]=Ops, Fail) -> {test,is_record,Fail,Ops}.
-
-
 %% is_pure_test({test,Op,Fail,Ops}) -> true|false.
 %%  Return 'true' if the test instruction does not modify any
 %%  registers and/or bit syntax matching state.
@@ -256,82 +69,15 @@ is_pure_test({test,is_eq_exact,_,[_,_]}) -> true;
 is_pure_test({test,is_ne_exact,_,[_,_]}) -> true;
 is_pure_test({test,is_ge,_,[_,_]}) -> true;
 is_pure_test({test,is_lt,_,[_,_]}) -> true;
-is_pure_test({test,is_nil,_,[_]}) -> true;
 is_pure_test({test,is_nonempty_list,_,[_]}) -> true;
+is_pure_test({test,is_tagged_tuple,_,[_,_,_]}) -> true;
 is_pure_test({test,test_arity,_,[_,_]}) -> true;
 is_pure_test({test,has_map_fields,_,[_|_]}) -> true;
 is_pure_test({test,is_bitstr,_,[_]}) -> true;
 is_pure_test({test,is_function2,_,[_,_]}) -> true;
-is_pure_test({test,Op,_,Ops}) -> 
+is_pure_test({test,Op,_,Ops}) ->
     erl_internal:new_type_test(Op, length(Ops)).
 
-    
-%% live_opt([Instruction]) -> [Instruction].
-%%  Go through the instruction sequence in reverse execution
-%%  order, keep track of liveness and remove 'move' instructions
-%%  whose destination is a register that will not be used.
-%%  Also insert {used,Regs} annotations at the beginning
-%%  and end of each block.
-
--spec live_opt([instruction()]) -> [instruction()].
-
-live_opt(Is0) ->
-    {[{label,Fail}|_]=Bef,[Fi|Is]} =
-	splitwith(fun({func_info,_,_,_}) -> false;
-		     (_) -> true
-		  end, Is0),
-    {func_info,_,_,Live} = Fi,
-    D = gb_trees:insert(Fail, live_call(Live), gb_trees:empty()),
-    Bef ++ [Fi|live_opt(reverse(Is), 0, D, [])].
-
-
-%% delete_annos([Instruction]) -> [Instruction].
-%%  Delete all annotations.
-
--spec delete_annos([instruction()]) -> [instruction()].
-
-delete_annos([{block,Bl0}|Is]) ->
-    case delete_annos(Bl0) of
-	[] -> delete_annos(Is);
-	[_|_]=Bl -> [{block,Bl}|delete_annos(Is)]
-    end;
-delete_annos([{'%anno',_}|Is]) ->
-    delete_annos(Is);
-delete_annos([I|Is]) ->
-    [I|delete_annos(Is)];
-delete_annos([]) -> [].
-
-%% combine_heap_needs(HeapNeed1, HeapNeed2) -> HeapNeed
-%%  Combine the heap need for two allocation instructions.
-
--type heap_need_tag() :: 'floats' | 'words'.
--type heap_need() :: non_neg_integer() |
-                     {'alloc',[{heap_need_tag(),non_neg_integer()}]}.
--spec combine_heap_needs(heap_need(), heap_need()) -> heap_need().
-
-combine_heap_needs(H1, H2) when is_integer(H1), is_integer(H2) ->
-    H1 + H2;
-combine_heap_needs(H1, H2) ->
-    {alloc,combine_alloc_lists([H1,H2])}.
-
-
-%% anno_defs(Instructions) -> Instructions'
-%%  Add {def,RegisterBitmap} annotations to the beginning of
-%%  each block.  Iff bit X is set in the the bitmap, it means
-%%  that {x,X} is defined when the block is entered.
-
--spec anno_defs([instruction()]) -> [instruction()].
-
-anno_defs(Is0) ->
-    {Bef,[Fi|Is1]} =
-	splitwith(fun({func_info,_,_,_}) -> false;
-		     (_) -> true
-		  end, Is0),
-    {func_info,_,_,Arity} = Fi,
-    Regs = init_def_regs(Arity),
-    Is = defs(Is1, Regs, #{}),
-    Bef ++ [Fi|Is].
-
 %% split_even/1
 %% [1,2,3,4,5,6] -> {[1,3,5],[2,4,6]}
 
@@ -343,446 +89,6 @@ split_even(Rs) -> split_even(Rs, [], []).
 %%% Local functions.
 %%%
 
-
-%% check_liveness(Reg, [Instruction], #live{}) ->
-%%                      {killed | not_used | used, #live{}}
-%%  Find out whether Reg is used or killed in instruction sequence.
-%%
-%%    killed - Reg is assigned or killed by an allocation instruction.
-%%    not_used - the value of Reg is not used, but Reg must not be garbage
-%%    exit_not_used - the value of Reg is not used, but must not be garbage
-%%                    because the stack will be scanned because an
-%%                    exit BIF will raise an exception
-%%    used - Reg is used
-
-check_liveness({fr,_}, _, St) ->
-    %% Conservatively always consider the floating point register used.
-    {used,St};
-check_liveness(R, [{block,Blk}|Is], St0) ->
-    case check_liveness_block(R, Blk, St0) of
-	{transparent,St1} ->
-	    check_liveness(R, Is, St1);
-	{alloc_used,St1} ->
-            %% Used by an allocating instruction, but value not referenced.
-            %% Must check the rest of the instructions.
-	    not_used(check_liveness(R, Is, St1));
-	{Other,_}=Res when is_atom(Other) ->
-	    Res
-    end;
-check_liveness(R, [{label,_}|Is], St) ->
-    check_liveness(R, Is, St);
-check_liveness(R, [{test,_,{f,Fail},As}|Is], St0) ->
-    case member(R, As) of
-	true ->
-	    {used,St0};
-	false ->
-	    case check_liveness_at(R, Fail, St0) of
-		{killed,St1} ->
-		    check_liveness(R, Is, St1);
-		{exit_not_used,St1} ->
-		    not_used(check_liveness(R, Is, St1));
-		{not_used,St1} ->
-		    not_used(check_liveness(R, Is, St1));
-		{used,_}=Used ->
-		    Used
-	    end
-    end;
-check_liveness(R, [{test,Op,Fail,Live,Ss,Dst}|Is], St) ->
-    %% Check this instruction as a block to get a less conservative
-    %% result if the caller is is_not_used/3.
-    Block = [{set,[Dst],Ss,{alloc,Live,{bif,Op,Fail}}}],
-    check_liveness(R, [{block,Block}|Is], St);
-check_liveness(R, [{select,_,R,_,_}|_], St) ->
-    {used,St};
-check_liveness(R, [{select,_,_,Fail,Branches}|_], St) ->
-    check_liveness_everywhere(R, [Fail|Branches], St);
-check_liveness(R, [{jump,{f,F}}|_], St) ->
-    check_liveness_at(R, F, St);
-check_liveness(R, [{case_end,Used}|_], St) ->
-    check_liveness_exit(R, Used, St);
-check_liveness(R, [{try_case_end,Used}|_], St) ->
-    check_liveness_exit(R, Used, St);
-check_liveness(R, [{badmatch,Used}|_], St) ->
-    check_liveness_exit(R, Used, St);
-check_liveness(R, [if_end|_], St) ->
-    check_liveness_exit(R, ignore, St);
-check_liveness(R, [{func_info,_,_,Ar}|_], St) ->
-    case R of
-	{x,X} when X < Ar -> {used,St};
-	_ -> {killed,St}
-    end;
-check_liveness(R, [{kill,R}|_], St) ->
-    {killed,St};
-check_liveness(R, [{kill,_}|Is], St) ->
-    check_liveness(R, Is, St);
-check_liveness(R, [{bs_init,_,_,none,Ss,Dst}|Is], St) ->
-    case member(R, Ss) of
-	true ->
-	    {used,St};
-	false ->
-	    if
-		R =:= Dst -> {killed,St};
-		true -> check_liveness(R, Is, St)
-	    end
-    end;
-check_liveness(R, [{bs_init,_,_,Live,Ss,Dst}|Is], St) ->
-    case R of
-	{x,X} ->
-            case member(R, Ss) of
-                true ->
-                    {used,St};
-                false ->
-                    if
-                        X < Live ->
-                            not_used(check_liveness(R, Is, St));
-                        true ->
-                            {killed,St}
-                    end
-	    end;
-	{y,_} ->
-	    case member(R, Ss) of
-		true -> {used,St};
-		false ->
-                    %% If the exception is taken, the stack may
-                    %% be scanned. Therefore the register is not
-                    %% guaranteed to be killed.
-		    if
-                        R =:= Dst -> {not_used,St};
-			true -> not_used(check_liveness(R, Is, St))
-		    end
-	    end
-    end;
-check_liveness(R, [{deallocate,_}|Is], St) ->
-    case R of
-	{y,_} -> {killed,St};
-	_ -> check_liveness(R, Is, St)
-    end;
-check_liveness({x,_}=R, [return|_], St) ->
-    case R of
-	{x,0} -> {used,St};
-	{x,_} -> {killed,St}
-    end;
-check_liveness(R, [{call,Live,_}|Is], St) ->
-    case R of
-	{x,X} when X < Live -> {used,St};
-	{x,_} -> {killed,St};
-	{y,_} -> not_used(check_liveness(R, Is, St))
-    end;
-check_liveness(R, [{call_ext,Live,_}=I|Is], St) ->
-    case R of
-	{x,X} when X < Live ->
-	    {used,St};
-	{x,_} ->
-	    {killed,St};
-	{y,_} ->
-	    case beam_jump:is_exit_instruction(I) of
-		false ->
-		    not_used(check_liveness(R, Is, St));
-		true ->
-		    %% We must make sure we don't check beyond this
-		    %% instruction or we will fall through into random
-		    %% unrelated code and get stuck in a loop.
-		    {exit_not_used,St}
-	    end
-    end;
-check_liveness(R, [{call_fun,Live}|Is], St) ->
-    case R of
-	{x,X} when X =< Live -> {used,St};
-	{x,_} -> {killed,St};
-	{y,_} -> not_used(check_liveness(R, Is, St))
-    end;
-check_liveness(R, [{apply,Args}|Is], St) ->
-    case R of
-	{x,X} when X < Args+2 -> {used,St};
-	{x,_} -> {killed,St};
-	{y,_} -> not_used(check_liveness(R, Is, St))
-    end;
-check_liveness(R, [{bif,Op,Fail,Ss,D}|Is], St) ->
-    Set = {set,[D],Ss,{bif,Op,Fail}},
-    check_liveness(R, [{block,[Set]}|Is], St);
-check_liveness(R, [{gc_bif,Op,{f,Fail},Live,Ss,D}|Is], St) ->
-    Set = {set,[D],Ss,{alloc,Live,{gc_bif,Op,Fail}}},
-    check_liveness(R, [{block,[Set]}|Is], St);
-check_liveness(R, [{bs_put,{f,0},_,Ss}|Is], St) ->
-    case member(R, Ss) of
-	true -> {used,St};
-	false -> check_liveness(R, Is, St)
-    end;
-check_liveness(R, [{bs_restore2,S,_}|Is], St) ->
-    case R of
-	S -> {used,St};
-	_ -> check_liveness(R, Is, St)
-    end;
-check_liveness(R, [{bs_save2,S,_}|Is], St) ->
-    case R of
-	S -> {used,St};
-	_ -> check_liveness(R, Is, St)
-    end;
-check_liveness(R, [{move,S,D}|Is], St) ->
-    case R of
-	S -> {used,St};
-	D -> {killed,St};
-	_ -> check_liveness(R, Is, St)
-    end;
-check_liveness(R, [{make_fun2,_,_,_,NumFree}|Is], St) ->
-    case R of
-	{x,X} when X < NumFree -> {used,St};
-	{x,_} -> {killed,St};
-	{y,_} -> not_used(check_liveness(R, Is, St))
-    end;
-check_liveness(R, [{'catch'=Op,Y,Fail}|Is], St) ->
-    Set = {set,[Y],[],{try_catch,Op,Fail}},
-    check_liveness(R, [{block,[Set]}|Is], St);
-check_liveness(R, [{'try'=Op,Y,Fail}|Is], St) ->
-    Set = {set,[Y],[],{try_catch,Op,Fail}},
-    check_liveness(R, [{block,[Set]}|Is], St);
-check_liveness(R, [{try_end,Y}|Is], St) ->
-    case R of
-	Y ->
-	    {killed,St};
-	{y,_} ->
-	    %% y registers will be used if an exception occurs and
-	    %% control transfers to the label given in the previous
-	    %% try/2 instruction.
-	    {used,St};
-	_ ->
-	    check_liveness(R, Is, St)
-    end;
-check_liveness(R, [{catch_end,Y}|Is], St) ->
-    case R of
-	Y -> {killed,St};
-	_ -> check_liveness(R, Is, St)
-    end;
-check_liveness(R, [{get_tuple_element,S,_,D}|Is], St) ->
-    case R of
-	S -> {used,St};
-	D -> {killed,St};
-	_ -> check_liveness(R, Is, St)
-    end;
-check_liveness(R, [{bs_context_to_binary,S}|Is], St) ->
-    case R of
-	S -> {used,St};
-	_ -> check_liveness(R, Is, St)
-    end;
-check_liveness(R, [{loop_rec,{f,_},{x,0}}|_], St) ->
-    case R of
-	{x,_} ->
-	    {killed,St};
-	_ ->
-	    %% y register. Rarely happens. Be very conversative and
-	    %% assume it's used.
-	    {used,St}
-    end;
-check_liveness(R, [{loop_rec_end,{f,Fail}}|_], St) ->
-    check_liveness_at(R, Fail, St);
-check_liveness(R, [{line,_}|Is], St) ->
-    check_liveness(R, Is, St);
-check_liveness(R, [{get_map_elements,{f,Fail},S,{list,L}}|Is], St0) ->
-    {Ss,Ds} = split_even(L),
-    case member(R, [S|Ss]) of
-	true ->
-	    {used,St0};
-	false ->
-	    case check_liveness_at(R, Fail, St0) of
-		{killed,St}=Killed ->
-		    case member(R, Ds) of
-			true -> Killed;
-			false -> check_liveness(R, Is, St)
-		    end;
-		Other ->
-		    Other
-	    end
-    end;
-check_liveness(R, [{put_map,F,Op,S,D,Live,{list,Puts}}|Is], St) ->
-    Set = {set,[D],[S|Puts],{alloc,Live,{put_map,Op,F}}},
-    check_liveness(R, [{block,[Set]}||Is], St);
-check_liveness(R, [{put_tuple,Ar,D}|Is], St) ->
-    Set = {set,[D],[],{put_tuple,Ar}},
-    check_liveness(R, [{block,[Set]}||Is], St);
-check_liveness(R, [{put_list,S1,S2,D}|Is], St) ->
-    Set = {set,[D],[S1,S2],put_list},
-    check_liveness(R, [{block,[Set]}||Is], St);
-check_liveness(R, [{test_heap,N,Live}|Is], St) ->
-    I = {block,[{set,[],[],{alloc,Live,{nozero,nostack,N,[]}}}]},
-    check_liveness(R, [I|Is], St);
-check_liveness(R, [{allocate_zero,N,Live}|Is], St) ->
-    I = {block,[{set,[],[],{alloc,Live,{zero,N,0,[]}}}]},
-    check_liveness(R, [I|Is], St);
-check_liveness(R, [{get_hd,S,D}|Is], St) ->
-    I = {block,[{set,[D],[S],get_hd}]},
-    check_liveness(R, [I|Is], St);
-check_liveness(R, [{get_tl,S,D}|Is], St) ->
-    I = {block,[{set,[D],[S],get_tl}]},
-    check_liveness(R, [I|Is], St);
-check_liveness(R, [remove_message|Is], St) ->
-    check_liveness(R, Is, St);
-check_liveness({x,X}, [build_stacktrace|_], St) when X > 0 ->
-    {killed,St};
-check_liveness(R, [{recv_mark,_}|Is], St) ->
-    check_liveness(R, Is, St);
-check_liveness(R, [{recv_set,_}|Is], St) ->
-    check_liveness(R, Is, St);
-check_liveness(R, [{'%',_}|Is], St) ->
-    check_liveness(R, Is, St);
-check_liveness(_R, Is, St) when is_list(Is) ->
-    %% Not implemented. Conservatively assume that the register is used.
-    {used,St}.
-
-check_liveness_everywhere(R, Lbls, St0) ->
-    check_liveness_everywhere_1(R, Lbls, killed, St0).
-
-check_liveness_everywhere_1(R, [{f,Lbl}|T], Res0, St0) ->
-    {Res1,St} = check_liveness_at(R, Lbl, St0),
-    Res = case Res1 of
-	      killed -> Res0;
-	      _ -> Res1
-	  end,
-    case Res of
-	used -> {used,St};
-	_ -> check_liveness_everywhere_1(R, T, Res, St)
-    end;
-check_liveness_everywhere_1(R, [_|T], Res, St) ->
-    check_liveness_everywhere_1(R, T, Res, St);
-check_liveness_everywhere_1(_, [], Res, St) ->
-    {Res,St}.
-
-check_liveness_at(R, Lbl, #live{lbl=Ll,res=ResMemorized}=St0) ->
-    case gb_trees:lookup(Lbl, ResMemorized) of
-	{value,Res} ->
-	    {Res,St0};
-	none ->
-	    {Res,St} = case gb_trees:lookup(Lbl, Ll) of
-			   {value,Is} -> check_liveness(R, Is, St0);
-			   none -> {used,St0}
-		       end,
-	    {Res,St#live{res=gb_trees:insert(Lbl, Res, St#live.res)}}
-    end.
-
-not_used({used,_}=Res) -> Res;
-not_used({_,St}) -> {not_used,St}.
-
-check_liveness_exit(R, R, St) -> {used,St};
-check_liveness_exit({x,_}, _, St) -> {killed,St};
-check_liveness_exit({y,_}, _, St) -> {exit_not_used,St}.
-
-%% check_liveness_block(Reg, [Instruction], State) ->
-%%     {killed | not_used | used | alloc_used | transparent,State'}
-%%  Finds out how Reg is used in the instruction sequence inside a block.
-%%  Returns one of:
-%%    killed - Reg is assigned a new value or killed by an
-%%       allocation instruction
-%%    not_used - The value is not used, but the register is referenced
-%%       e.g. by an allocation instruction
-%%    transparent - Reg is neither used nor killed
-%%    alloc_used - Used only in an allocate instruction
-%%    used - Reg is explicitly used by an instruction
-%%
-%%  Annotations are not allowed.
-%%
-%%  (Unknown instructions will cause an exception.)
-
-check_liveness_block({x,X}=R, [{set,Ds,Ss,{alloc,Live,Op}}|Is], St0) ->
-    if 
-	X >= Live ->
-	    {killed,St0};
-	true ->
-	    case check_liveness_block_1(R, Ss, Ds, Op, Is, St0) of
-                {transparent,St} -> {alloc_used,St};
-		{_,_}=Res -> not_used(Res)
-	    end
-    end;
-check_liveness_block({y,_}=R, [{set,Ds,Ss,{alloc,_Live,Op}}|Is], St0) ->
-    case check_liveness_block_1(R, Ss, Ds, Op, Is, St0) of
-        {transparent,St} -> {alloc_used,St};
-        {_,_}=Res -> not_used(Res)
-    end;
-check_liveness_block({y,_}=R, [{set,Ds,Ss,{try_catch,_,Op}}|Is], St0) ->
-    case Ds of
-        [R] ->
-            {killed,St0};
-        _ ->
-            case check_liveness_block_1(R, Ss, Ds, Op, Is, St0) of
-                {exit_not_used,St} ->
-                    {used,St};
-                {transparent,St} ->
-                    %% Conservatively assumed that it is used.
-                    {used,St};
-                {_,_}=Res ->
-                    Res
-            end
-    end;
-check_liveness_block(R, [{set,Ds,Ss,Op}|Is], St) ->
-    check_liveness_block_1(R, Ss, Ds, Op, Is, St);
-check_liveness_block(_, [], St) -> {transparent,St}.
-
-check_liveness_block_1(R, Ss, Ds, Op, Is, St0) ->
-    case member(R, Ss) of
-	true ->
-	    {used,St0};
-	false ->
-	    case check_liveness_block_2(R, Op, Ss, St0) of
-		{killed,St} ->
-		    case member(R, Ds) of
-			true -> {killed,St};
-			false -> check_liveness_block(R, Is, St)
-		    end;
-		{exit_not_used,St} ->
-		    case member(R, Ds) of
-			true -> {exit_not_used,St};
-			false -> check_liveness_block(R, Is, St)
-		    end;
-		{not_used,St} ->
-		    not_used(case member(R, Ds) of
-				 true -> {killed,St};
-				 false -> check_liveness_block(R, Is, St)
-			     end);
-		{used,St} ->
-		    {used,St}
-	    end
-    end.
-
-check_liveness_block_2(R, {gc_bif,Op,{f,Lbl}}, Ss, St) ->
-    check_liveness_block_3(R, Lbl, {Op,length(Ss)}, St);
-check_liveness_block_2(R, {bif,Op,{f,Lbl}}, Ss, St) ->
-    Arity = length(Ss),
-
-    %% Note that is_function/2 is a type test but is not safe.
-    case erl_internal:comp_op(Op, Arity) orelse
-	(erl_internal:new_type_test(Op, Arity) andalso
-         erl_bifs:is_safe(erlang, Op, Arity)) of
-	true ->
-	    {killed,St};
-	false ->
-	    check_liveness_block_3(R, Lbl, {Op,length(Ss)}, St)
-    end;
-check_liveness_block_2(R, {put_map,_Op,{f,Lbl}}, _Ss, St) ->
-    check_liveness_block_3(R, Lbl, {unsafe,0}, St);
-check_liveness_block_2(_, _, _, St) ->
-    {killed,St}.
-
-check_liveness_block_3({x,_}, 0, _FA, St) ->
-    {killed,St};
-check_liveness_block_3({y,_}, 0, {F,A}, St) ->
-    %% If the exception is thrown, the stack may be scanned,
-    %% thus implicitly using the y register.
-    case erl_bifs:is_safe(erlang, F, A) of
-        true -> {killed,St};
-        false -> {used,St}
-    end;
-check_liveness_block_3(R, Lbl, _FA, St0) ->
-    check_liveness_at(R, Lbl, St0).
-
-index_labels_1([{label,Lbl}|Is0], Acc) ->
-    Is = drop_labels(Is0),
-    index_labels_1(Is0, [{Lbl,Is}|Acc]);
-index_labels_1([_|Is], Acc) ->
-    index_labels_1(Is, Acc);
-index_labels_1([], Acc) -> gb_trees:from_orddict(sort(Acc)).
-
-drop_labels([{label,_}|Is]) -> drop_labels(Is);
-drop_labels(Is) -> Is.
-
-
 replace_labels_1([{test,Test,{f,Lbl},Ops}|Is], Acc, D, Fb) ->
     replace_labels_1(Is, [{test,Test,{f,label(Lbl, D, Fb)},Ops}|Acc], D, Fb);
 replace_labels_1([{test,Test,{f,Lbl},Live,Ops,Dst}|Is], Acc, D, Fb) ->
@@ -838,485 +144,7 @@ label(Old, D, Fb) ->
         _ -> Fb(Old)
     end.
 
-%% Help function for combine_heap_needs.
-
-combine_alloc_lists(Al0) ->
-    Al1 = flatmap(fun(Words) when is_integer(Words) ->
-                         [{words,Words}];
-                    ({alloc,List}) ->
-                         List
-                 end, Al0),
-    Al2 = sofs:relation(Al1),
-    Al3 = sofs:relation_to_family(Al2),
-    Al4 = sofs:to_external(Al3),
-    [{Tag,lists:sum(L)} || {Tag,L} <- Al4].
-
-%% live_opt/4.
-
-%% Bit syntax instructions.
-live_opt([{bs_context_to_binary,Src}=I|Is], Regs0, D, Acc) ->
-    Regs = x_live([Src], Regs0),
-    live_opt(Is, Regs, D, [I|Acc]);
-live_opt([{bs_init,Fail,_,none,Ss,Dst}=I|Is], Regs0, D, Acc) ->
-    Regs1 = x_live(Ss, x_dead([Dst], Regs0)),
-    Regs = live_join_label(Fail, D, Regs1),
-    live_opt(Is, Regs, D, [I|Acc]);
-live_opt([{bs_init,Fail,Info,Live0,Ss,Dst}|Is], Regs0, D, Acc) ->
-    Regs1 = x_dead([Dst], Regs0),
-    Live = live_regs(Regs1),
-    true = Live =< Live0,	%Assertion.
-    Regs2 = live_call(Live),
-    Regs3 = x_live(Ss, Regs2),
-    Regs = live_join_label(Fail, D, Regs3),
-    I = {bs_init,Fail,Info,Live,Ss,Dst},
-    live_opt(Is, Regs, D, [I|Acc]);
-live_opt([{bs_put,Fail,_,Ss}=I|Is], Regs0, D, Acc) ->
-    Regs1 = x_live(Ss, Regs0),
-    Regs = live_join_label(Fail, D, Regs1),
-    live_opt(Is, Regs, D, [I|Acc]);
-live_opt([{bs_restore2,Src,_}=I|Is], Regs0, D, Acc) ->
-    Regs = x_live([Src], Regs0),
-    live_opt(Is, Regs, D, [I|Acc]);
-live_opt([{bs_save2,Src,_}=I|Is], Regs0, D, Acc) ->
-    Regs = x_live([Src], Regs0),
-    live_opt(Is, Regs, D, [I|Acc]);
-live_opt([{test,bs_start_match2,Fail,Live,[Src,_],_}=I|Is], _, D, Acc) ->
-    Regs0 = live_call(Live),
-    Regs1 = x_live([Src], Regs0),
-    Regs = live_join_label(Fail, D, Regs1),
-    live_opt(Is, Regs, D, [I|Acc]);
-
-%% Other instructions.
-live_opt([{block,Bl0}|Is], Regs0, D, Acc) ->
-    Live0 = make_anno({used,Regs0}),
-    {Bl,Regs} = live_opt_block(reverse(Bl0), Regs0, D, [Live0]),
-    Live = make_anno({used,Regs}),
-    live_opt(Is, Regs, D, [{block,[Live|Bl]}|Acc]);
-live_opt([build_stacktrace=I|Is], _, D, Acc) ->
-    live_opt(Is, live_call(1), D, [I|Acc]);
-live_opt([raw_raise=I|Is], _, D, Acc) ->
-    live_opt(Is, live_call(3), D, [I|Acc]);
-live_opt([{label,L}=I|Is], Regs, D0, Acc) ->
-    D = gb_trees:insert(L, Regs, D0),
-    live_opt(Is, Regs, D, [I|Acc]);
-live_opt([{jump,{f,L}}=I|Is], _, D, Acc) ->
-    Regs = gb_trees:get(L, D),
-    live_opt(Is, Regs, D, [I|Acc]);
-live_opt([return=I|Is], _, D, Acc) ->
-    live_opt(Is, 1, D, [I|Acc]);
-live_opt([{catch_end,_}=I|Is], _, D, Acc) ->
-    live_opt(Is, live_call(1), D, [I|Acc]);
-live_opt([{badmatch,Src}=I|Is], _, D, Acc) ->
-    Regs = x_live([Src], 0),
-    live_opt(Is, Regs, D, [I|Acc]);
-live_opt([{case_end,Src}=I|Is], _, D, Acc) ->
-    Regs = x_live([Src], 0),
-    live_opt(Is, Regs, D, [I|Acc]);
-live_opt([{try_case_end,Src}=I|Is], _, D, Acc) ->
-    Regs = x_live([Src], 0),
-    live_opt(Is, Regs, D, [I|Acc]);
-live_opt([if_end=I|Is], _, D, Acc) ->
-    Regs = 0,
-    live_opt(Is, Regs, D, [I|Acc]);
-live_opt([{call,Arity,_}=I|Is], _, D, Acc) ->
-    live_opt(Is, live_call(Arity), D, [I|Acc]);
-live_opt([{call_ext,Arity,_}=I|Is], _, D, Acc) ->
-    live_opt(Is, live_call(Arity), D, [I|Acc]);
-live_opt([{call_fun,Arity}=I|Is], _, D, Acc) ->
-    live_opt(Is, live_call(Arity+1), D, [I|Acc]);
-live_opt([{apply,Arity}=I|Is], _, D, Acc) ->
-    live_opt(Is, live_call(Arity+2), D, [I|Acc]);
-live_opt([{make_fun2,_,_,_,Arity}=I|Is], _, D, Acc) ->
-    live_opt(Is, live_call(Arity), D, [I|Acc]);
-live_opt([{test,_,Fail,Ss}=I|Is], Regs0, D, Acc) ->
-    Regs1 = x_live(Ss, Regs0),
-    Regs = live_join_label(Fail, D, Regs1),
-    live_opt(Is, Regs, D, [I|Acc]);
-live_opt([{test,_,Fail,Live,Ss,_}=I|Is], _, D, Acc) ->
-    Regs0 = live_call(Live),
-    Regs1 = x_live(Ss, Regs0),
-    Regs = live_join_label(Fail, D, Regs1),
-    live_opt(Is, Regs, D, [I|Acc]);
-live_opt([{select,_,Src,Fail,List}=I|Is], _, D, Acc) ->
-    Regs0 = 0,
-    Regs1 = x_live([Src], Regs0),
-    Regs = live_join_labels([Fail|List], D, Regs1),
-    live_opt(Is, Regs, D, [I|Acc]);
-live_opt([{try_case,Y}=I|Is], Regs0, D, Acc) ->
-    Regs = live_call(1),
-    case Regs0 of
-        0 ->
-            live_opt(Is, Regs, D, [{try_end,Y}|Acc]);
-        _ ->
-            live_opt(Is, live_call(1), D, [I|Acc])
-    end;
-live_opt([{loop_rec,_Fail,_Dst}=I|Is], _, D, Acc) ->
-    live_opt(Is, 0, D, [I|Acc]);
-live_opt([timeout=I|Is], _, D, Acc) ->
-    live_opt(Is, 0, D, [I|Acc]);
-live_opt([{wait,_}=I|Is], _, D, Acc) ->
-    live_opt(Is, 0, D, [I|Acc]);
-live_opt([{get_map_elements,Fail,Src,{list,List}}=I|Is], Regs0, D, Acc) ->
-    {Ss,Ds} = split_even(List),
-    Regs1 = x_live([Src|Ss], x_dead(Ds, Regs0)),
-    Regs = live_join_label(Fail, D, Regs1),
-    live_opt(Is, Regs, D, [I|Acc]);
-live_opt([{gc_bif,N,F,R,As,Dst}=I|Is], Regs0, D, Acc) ->
-    Bl = [{set,[Dst],As,{alloc,R,{gc_bif,N,F}}}],
-    {_,Regs} = live_opt_block(Bl, Regs0, D, []),
-    live_opt(Is, Regs, D, [I|Acc]);
-live_opt([{bif,N,F,As,Dst}=I|Is], Regs0, D, Acc) ->
-    Bl = [{set,[Dst],As,{bif,N,F}}],
-    {_,Regs} = live_opt_block(Bl, Regs0, D, []),
-    live_opt(Is, Regs, D, [I|Acc]);
-live_opt([{get_tuple_element,Src,Idx,Dst}=I|Is], Regs0, D, Acc) ->
-    Bl = [{set,[Dst],[Src],{get_tuple_element,Idx}}],
-    {_,Regs} = live_opt_block(Bl, Regs0, D, []),
-    live_opt(Is, Regs, D, [I|Acc]);
-live_opt([{move,Src,Dst}=I|Is], Regs0, D, Acc) ->
-    Regs = x_live([Src], x_dead([Dst], Regs0)),
-    live_opt(Is, Regs, D, [I|Acc]);
-live_opt([{put_map,F,Op,S,Dst,R,{list,Puts}}=I|Is], Regs0, D, Acc) ->
-    Bl = [{set,[Dst],[S|Puts],{alloc,R,{put_map,Op,F}}}],
-    {_,Regs} = live_opt_block(Bl, Regs0, D, []),
-    live_opt(Is, Regs, D, [I|Acc]);
-
-%% Transparent instructions - they neither use nor modify x registers.
-live_opt([{deallocate,_}=I|Is], Regs, D, Acc) ->
-    live_opt(Is, Regs, D, [I|Acc]);
-live_opt([{kill,_}=I|Is], Regs, D, Acc) ->
-    live_opt(Is, Regs, D, [I|Acc]);
-live_opt([{try_end,_}=I|Is], Regs, D, Acc) ->
-    live_opt(Is, Regs, D, [I|Acc]);
-live_opt([{loop_rec_end,_}=I|Is], Regs, D, Acc) ->
-    live_opt(Is, Regs, D, [I|Acc]);
-live_opt([{wait_timeout,_,nil}=I|Is], Regs, D, Acc) ->
-    live_opt(Is, Regs, D, [I|Acc]);
-live_opt([{wait_timeout,_,{Tag,_}}=I|Is], Regs, D, Acc) when Tag =/= x ->
-    live_opt(Is, Regs, D, [I|Acc]);
-live_opt([{line,_}=I|Is], Regs, D, Acc) ->
-    live_opt(Is, Regs, D, [I|Acc]);
-live_opt([{'catch',_,_}=I|Is], Regs, D, Acc) ->
-    live_opt(Is, Regs, D, [I|Acc]);
-live_opt([{'try',_,_}=I|Is], Regs, D, Acc) ->
-    live_opt(Is, Regs, D, [I|Acc]);
-
-%% The following instructions can occur if the "compilation" has been
-%% started from a .S file using the 'from_asm' option.
-live_opt([{trim,_,_}=I|Is], Regs, D, Acc) ->
-    live_opt(Is, Regs, D, [I|Acc]);
-live_opt([{'%',_}=I|Is], Regs, D, Acc) ->
-    live_opt(Is, Regs, D, [I|Acc]);
-live_opt([{recv_set,_}=I|Is], Regs, D, Acc) ->
-    live_opt(Is, Regs, D, [I|Acc]);
-live_opt([{recv_mark,_}=I|Is], Regs, D, Acc) ->
-    live_opt(Is, Regs, D, [I|Acc]);
-
-live_opt([], _, _, Acc) -> Acc.
-
-live_opt_block([{set,[{x,X}]=Ds,Ss,move}=I|Is], Regs0, D, Acc) ->
-    Regs = x_live(Ss, x_dead(Ds, Regs0)),
-    case is_live(X, Regs0) of
-        true ->
-            live_opt_block(Is, Regs, D, [I|Acc]);
-        false ->
-            %% Useless move, will never be used.
-            live_opt_block(Is, Regs, D, Acc)
-    end;
-live_opt_block([{set,Ds,Ss,{alloc,Live0,AllocOp}}|Is], Regs0, D, Acc) ->
-    %% Calculate liveness from the point of view of the GC.
-    %% There will never be a GC if the instruction fails, so we should
-    %% ignore the failure branch.
-    GcRegs1 = x_dead(Ds, Regs0),
-    GcRegs = x_live(Ss, GcRegs1),
-    Live = live_regs(GcRegs),
-
-    %% The life-time analysis used by the code generator is sometimes too
-    %% conservative, so it may be possible to lower the number of live
-    %% registers based on the exact liveness information. The main benefit is
-    %% that more optimizations that depend on liveness information (such as the
-    %% beam_dead pass) may be applied.
-    true = Live =< Live0,                       %Assertion.
-    I = {set,Ds,Ss,{alloc,Live,AllocOp}},
-
-    %% Calculate liveness from the point of view of the preceding instruction.
-    %% The liveness is the union of live registers in the GC and the live
-    %% registers at the failure label.
-    Regs1 = live_call(Live),
-    Regs = live_join_alloc(AllocOp, D, Regs1),
-    live_opt_block(Is, Regs, D, [I|Acc]);
-live_opt_block([{set,Ds,Ss,{bif,_,Fail}}=I|Is], Regs0, D, Acc) ->
-    Regs1 = x_dead(Ds, Regs0),
-    Regs2 = x_live(Ss, Regs1),
-    Regs = live_join_label(Fail, D, Regs2),
-    live_opt_block(Is, Regs, D, [I|Acc]);
-live_opt_block([{set,Ds,Ss,_}=I|Is], Regs0, D, Acc) ->
-    Regs = x_live(Ss, x_dead(Ds, Regs0)),
-    live_opt_block(Is, Regs, D, [I|Acc]);
-live_opt_block([{'%anno',_}|Is], Regs, D, Acc) ->
-    live_opt_block(Is, Regs, D, Acc);
-live_opt_block([], Regs, _, Acc) -> {Acc,Regs}.
-
-live_join_alloc({Kind,_Name,Fail}, D, Regs) when Kind =:= gc_bif; Kind =:= put_map ->
-    live_join_label(Fail, D, Regs);
-live_join_alloc(_, _, Regs) -> Regs.
-
-live_join_labels([{f,L}|T], D, Regs0) when L =/= 0 ->
-    Regs = gb_trees:get(L, D) bor Regs0,
-    live_join_labels(T, D, Regs);
-live_join_labels([_|T], D, Regs) ->
-    live_join_labels(T, D, Regs);
-live_join_labels([], _, Regs) -> Regs.
-
-live_join_label({f,0}, _, Regs) ->
-    Regs;
-live_join_label({f,L}, D, Regs) ->
-    gb_trees:get(L, D) bor Regs.
-
-live_call(Live) -> (1 bsl Live) - 1.
-
-live_regs(Regs) ->
-    live_regs_1(0, Regs).
-
-live_regs_1(N, 0) -> N;
-live_regs_1(N, Regs) -> live_regs_1(N+1, Regs bsr 1).
-
-x_dead([{x,N}|Rs], Regs) -> x_dead(Rs, Regs band (bnot (1 bsl N)));
-x_dead([_|Rs], Regs) -> x_dead(Rs, Regs);
-x_dead([], Regs) -> Regs.
-
-x_live([{x,N}|Rs], Regs) -> x_live(Rs, Regs bor (1 bsl N));
-x_live([_|Rs], Regs) -> x_live(Rs, Regs);
-x_live([], Regs) -> Regs.
-
-is_live(X, Regs) -> ((Regs bsr X) band 1) =:= 1.
-
 split_even([], Ss, Ds) ->
     {reverse(Ss),reverse(Ds)};
 split_even([S,D|Rs], Ss, Ds) ->
     split_even(Rs, [S|Ss], [D|Ds]).
-
-%%%
-%%% Add annotations for defined registers.
-%%%
-%%% This analysis is done by scanning the instructions in
-%%% execution order.
-%%%
-
-defs([{apply,_}=I|Is], _Regs, D) ->
-    [I|defs(Is, 1, D)];
-defs([{bif,_,{f,Fail},_Src,Dst}=I|Is], Regs0, D) ->
-    Regs = def_regs([Dst], Regs0),
-    [I|defs(Is, Regs, update_regs(Fail, Regs0, D))];
-defs([{block,Block0}|Is], Regs0, D0) ->
-    {Block,Regs,D} = defs_list(Block0, Regs0, D0),
-    [{block,[make_anno({def,Regs0})|Block]}|defs(Is, Regs, D)];
-defs([{bs_init,{f,L},_,Live,_,Dst}=I|Is], Regs0, D) ->
-    Regs1 = case Live of
-                none -> Regs0;
-                _ -> init_def_regs(Live)
-            end,
-    Regs = def_regs([Dst], Regs1),
-    [I|defs(Is, Regs, update_regs(L, Regs, D))];
-defs([{test,bs_start_match2,{f,L},Live,_,Dst}=I|Is], _Regs, D) ->
-    Regs0 = init_def_regs(Live),
-    Regs = def_regs([Dst], Regs0),
-    [I|defs(Is, Regs, update_regs(L, Regs0, D))];
-defs([{bs_put,{f,L},_,_}=I|Is], Regs, D) ->
-    [I|defs(Is, Regs, update_regs(L, Regs, D))];
-defs([build_stacktrace=I|Is], _Regs, D) ->
-    [I|defs(Is, 1, D)];
-defs([{call,_,_}=I|Is], _Regs, D) ->
-    [I|defs(Is, 1, D)];
-defs([{call_ext,_,{extfunc,M,F,A}}=I|Is], _Regs, D) ->
-    case erl_bifs:is_exit_bif(M, F, A) of
-        false ->
-            [I|defs(Is, 1, D)];
-        true ->
-            [I|defs_unreachable(Is, D)]
-    end;
-defs([{call_ext,_,_}=I|Is], _Regs, D) ->
-    [I|defs(Is, 1, D)];
-defs([{call_fun,_}=I|Is], _Regs, D) ->
-    [I|defs(Is, 1, D)];
-defs([{'catch',_,{f,L}}=I|Is], Regs, D) ->
-    RegsAtLabel = init_def_regs(1),
-    [I|defs(Is, Regs, update_regs(L, RegsAtLabel, D))];
-defs([{catch_end,_}=I|Is], _Regs, D) ->
-    Regs = init_def_regs(1),
-    [I|defs(Is, Regs, D)];
-defs([{gc_bif,_,{f,Fail},Live,_Src,Dst}=I|Is], Regs0, D) ->
-    true = all_defined(Live, Regs0),            %Assertion.
-    Regs = def_regs([Dst], init_def_regs(Live)),
-    [I|defs(Is, Regs, update_regs(Fail, Regs0, D))];
-defs([{get_map_elements,{f,L},_Src,{list,DstList}}=I|Is], Regs0, D) ->
-    {_,Ds} = beam_utils:split_even(DstList),
-    Regs = def_regs(Ds, Regs0),
-    [I|defs(Is, Regs, update_regs(L, Regs0, D))];
-defs([{get_tuple_element,_,_,Dst}=I|Is], Regs0, D) ->
-    Regs = def_regs([Dst], Regs0),
-    [I|defs(Is, Regs, D)];
-defs([{jump,{f,L}}=I|Is], Regs, D) ->
-    [I|defs_unreachable(Is, update_regs(L, Regs, D))];
-defs([{label,L}=I|Is], Regs0, D) ->
-    case D of
-        #{L:=Regs1} ->
-            Regs = Regs0 band Regs1,
-            [I|defs(Is, Regs, D)];
-        #{} ->
-            [I|defs(Is, Regs0, D)]
-    end;
-defs([{loop_rec,{f,L},{x,0}}=I|Is], _Regs, D0) ->
-    RegsAtLabel = init_def_regs(0),
-    D = update_regs(L, RegsAtLabel, D0),
-    [I|defs(Is, init_def_regs(1), D)];
-defs([{loop_rec_end,_}=I|Is], _Regs, D) ->
-    [I|defs_unreachable(Is, D)];
-defs([{make_fun2,_,_,_,_}=I|Is], _Regs, D) ->
-    [I|defs(Is, 1, D)];
-defs([{move,_,Dst}=I|Is], Regs0, D) ->
-    Regs = def_regs([Dst], Regs0),
-    [I|defs(Is, Regs, D)];
-defs([{put_map,{f,Fail},_,_,Dst,_,_}=I|Is], Regs0, D) ->
-    Regs = def_regs([Dst], Regs0),
-    [I|defs(Is, Regs, update_regs(Fail, Regs0, D))];
-defs([raw_raise=I|Is], _Regs, D) ->
-    [I|defs(Is, 1, D)];
-defs([return=I|Is], _Regs, D) ->
-    [I|defs_unreachable(Is, D)];
-defs([{select,_,_Src,Fail,List}=I|Is], Regs, D0) ->
-    D = update_list([Fail|List], Regs, D0),
-    [I|defs_unreachable(Is, D)];
-defs([{test,_,{f,L},_}=I|Is], Regs, D) ->
-    [I|defs(Is, Regs, update_regs(L, Regs, D))];
-defs([{test,_,{f,L},Live,_,Dst}=I|Is], Regs0, D) ->
-    true = all_defined(Live, Regs0),             %Assertion.
-    Regs = def_regs([Dst], init_def_regs(Live)),
-    [I|defs(Is, Regs, update_regs(L, Regs0, D))];
-defs([{'try',_,{f,L}}=I|Is], Regs, D) ->
-    RegsAtLabel = init_def_regs(3),
-    [I|defs(Is, Regs, update_regs(L, RegsAtLabel, D))];
-defs([{try_case,_}=I|Is], _Regs, D) ->
-    [I|defs(Is, init_def_regs(3), D)];
-defs([{wait,_}=I|Is], _Regs, D) ->
-    [I|defs_unreachable(Is, D)];
-defs([{wait_timeout,_,_}=I|Is], _Regs, D) ->
-    [I|defs(Is, 0, D)];
-
-%% Exceptions.
-defs([{badmatch,_}=I|Is], _Regs, D) ->
-    [I|defs_unreachable(Is, D)];
-defs([{case_end,_}=I|Is], _Regs, D) ->
-    [I|defs_unreachable(Is, D)];
-defs([if_end=I|Is], _Regs, D) ->
-    [I|defs_unreachable(Is, D)];
-defs([{try_case_end,_}=I|Is], _Regs, D) ->
-    [I|defs_unreachable(Is, D)];
-
-%% Neutral instructions
-defs([{bs_context_to_binary,_}=I|Is], Regs, D) ->
-    [I|defs(Is, Regs, D)];
-defs([{bs_restore2,_,_}=I|Is], Regs, D) ->
-    [I|defs(Is, Regs, D)];
-defs([{bs_save2,_,_}=I|Is], Regs, D) ->
-    [I|defs(Is, Regs, D)];
-defs([{deallocate,_}=I|Is], Regs, D) ->
-    [I|defs(Is, Regs, D)];
-defs([{kill,_}=I|Is], Regs, D) ->
-    [I|defs(Is, Regs, D)];
-defs([{line,_}=I|Is], Regs, D) ->
-    [I|defs(Is, Regs, D)];
-defs([{recv_mark,_}=I|Is], Regs, D) ->
-    [I|defs(Is, Regs, D)];
-defs([{recv_set,_}=I|Is], Regs, D) ->
-    [I|defs(Is, Regs, D)];
-defs([timeout=I|Is], Regs, D) ->
-    [I|defs(Is, Regs, D)];
-defs([{trim,_,_}=I|Is], Regs, D) ->
-    [I|defs(Is, Regs, D)];
-defs([{try_end,_}=I|Is], Regs, D) ->
-    [I|defs(Is, Regs, D)];
-defs([{'%',_}=I|Is], Regs, D) ->
-    [I|defs(Is, Regs, D)];
-defs([], _, _) -> [].
-
-defs_unreachable([{label,L}=I|Is], D) ->
-    case D of
-        #{L:=Regs} ->
-            [I|defs(Is, Regs, D)];
-        #{} ->
-            defs_unreachable(Is, D)
-    end;
-defs_unreachable([_|Is], D) ->
-    defs_unreachable(Is, D);
-defs_unreachable([], _D) -> [].
-
-defs_list(Is, Regs, D) ->
-    defs_list(Is, Regs, D, []).
-
-defs_list([{set,Ds,_,{alloc,Live,Info}}=I|Is], Regs0, D0, Acc) ->
-    true = all_defined(Live, Regs0),             %Assertion.
-    D = case Info of
-            {gc_bif,_,{f,Fail}} ->
-                update_regs(Fail, Regs0, D0);
-            {put_map,_,{f,Fail}} ->
-                update_regs(Fail, Regs0, D0);
-            _ ->
-                D0
-        end,
-    Regs = def_regs(Ds, init_def_regs(Live)),
-    defs_list(Is, Regs, D, [I|Acc]);
-defs_list([{set,Ds,_,Info}=I|Is], Regs0, D0, Acc) ->
-    D = case Info of
-            {bif,_,{f,Fail}} ->
-                update_regs(Fail, Regs0, D0);
-            {try_catch,'catch',{f,Fail}} ->
-                update_regs(Fail, init_def_regs(1), D0);
-            {try_catch,'try',{f,Fail}} ->
-                update_regs(Fail, init_def_regs(3), D0);
-            _ ->
-                D0
-        end,
-    Regs = def_regs(Ds, Regs0),
-    defs_list(Is, Regs, D, [I|Acc]);
-defs_list([], Regs, D, Acc) ->
-    {reverse(Acc),Regs,D}.
-
-init_def_regs(Arity) ->
-    (1 bsl Arity) - 1.
-
-def_regs([{x,X}|T], Regs) ->
-    def_regs(T, Regs bor (1 bsl X));
-def_regs([_|T], Regs) ->
-    def_regs(T, Regs);
-def_regs([], Regs) -> Regs.
-
-update_list([{f,L}|T], Regs, D0) ->
-    D = update_regs(L, Regs, D0),
-    update_list(T, Regs, D);
-update_list([_|T], Regs, D) ->
-    update_list(T, Regs, D);
-update_list([], _Regs, D) -> D.
-
-update_regs(L, Regs0, D) ->
-    case D of
-        #{L:=Regs1} ->
-            Regs = Regs0 band Regs1,
-            D#{L:=Regs};
-        #{} ->
-            D#{L=>Regs0}
-    end.
-
-all_defined(Live, Regs) ->
-    All = (1 bsl Live) - 1,
-    Regs band All =:= All.
-
-%%%
-%%% Utilities.
-%%%
-
-%% make_anno(Anno) -> WrappedAnno.
-%%  Wrap an annotation term.
-
-make_anno(Anno) ->
-    {'%anno',Anno}.
diff --git a/lib/compiler/src/beam_validator.erl b/lib/compiler/src/beam_validator.erl
index fb2e7df65c..efd2be94cb 100644
--- a/lib/compiler/src/beam_validator.erl
+++ b/lib/compiler/src/beam_validator.erl
@@ -26,8 +26,9 @@
 
 %% Interface for compiler.
 -export([module/2, format_error/1]).
+-export([type_anno/1, type_anno/2, type_anno/4]).
 
--import(lists, [any/2,dropwhile/2,foldl/3,foreach/2,reverse/1]).
+-import(lists, [dropwhile/2,foldl/3,member/2,reverse/1,sort/1,zip/2]).
 
 %% To be called by the compiler.
 
@@ -44,6 +45,34 @@ module({Mod,Exp,Attr,Fs,Lc}=Code, _Opts)
 	    {error,[{atom_to_list(Mod),Es}]}
     end.
 
+%% Provides a stable interface for type annotations, used by certain passes to
+%% indicate that we can safely assume that a register has a given type.
+-spec type_anno(term()) -> term().
+type_anno(atom) -> {atom,[]};
+type_anno(bool) -> bool;
+type_anno({binary,_}) -> binary;
+type_anno(cons) -> cons;
+type_anno(float) -> {float,[]};
+type_anno(integer) -> {integer,[]};
+type_anno(list) -> list;
+type_anno(map) -> map;
+type_anno(match_context) -> match_context;
+type_anno(number) -> number;
+type_anno(nil) -> nil.
+
+-spec type_anno(term(), term()) -> term().
+type_anno(atom, Value) when is_atom(Value) -> {atom, Value};
+type_anno(float, Value) when is_float(Value)  -> {float, Value};
+type_anno(integer, Value) when is_integer(Value) -> {integer, Value}.
+
+-spec type_anno(term(), term(), term(), term()) -> term().
+type_anno(tuple, Size, Exact, Elements) when is_integer(Size), Size >= 0,
+                                             is_map(Elements) ->
+    case Exact of
+        true -> {tuple, Size, Elements};
+        false -> {tuple, [Size], Elements}
+    end.
+
 -spec format_error(term()) -> iolist().
 
 format_error({{_M,F,A},{I,Off,limit}}) ->
@@ -90,34 +119,9 @@ format_error(Error) ->
 %%  format as used in the compiler and in .S files.
 
 validate(Module, Fs) ->
-    Ft = index_bs_start_match(Fs, []),
+    Ft = index_parameter_types(Fs, []),
     validate_0(Module, Fs, Ft).
 
-index_bs_start_match([{function,_,_,Entry,Code0}|Fs], Acc0) ->
-    Code = dropwhile(fun({label,L}) when L =:= Entry -> false;
-			(_) -> true
-		     end, Code0),
-    case Code of
-	[{label,Entry}|Is] ->
-	    Acc = index_bs_start_match_1(Is, Entry, Acc0),
-	    index_bs_start_match(Fs, Acc);
-	_ ->
-	    %% Something serious is wrong. Ignore it for now.
-	    %% It will be detected and diagnosed later.
-	    index_bs_start_match(Fs, Acc0)
-    end;
-index_bs_start_match([], Acc) ->
-    gb_trees:from_orddict(lists:sort(Acc)).
-
-index_bs_start_match_1([{test,bs_start_match2,_,_,_,_}=I|_], Entry, Acc) ->
-    [{Entry,[I]}|Acc];
-index_bs_start_match_1([{test,_,{f,F},_},{bs_context_to_binary,_}|Is0], Entry, Acc) ->
-    [{label,F}|Is] = dropwhile(fun({label,L}) when L =:= F -> false;
-				  (_)  -> true
-			       end, Is0),
-    index_bs_start_match_1(Is, Entry, Acc);
-index_bs_start_match_1(_, _, Acc) -> Acc.
-
 validate_0(_Module, [], _) -> [];
 validate_0(Module, [{function,Name,Ar,Entry,Code}|Fs], Ft) ->
     try validate_1(Code, Name, Ar, Entry, Ft) of
@@ -132,41 +136,126 @@ validate_0(Module, [{function,Name,Ar,Entry,Code}|Fs], Ft) ->
 	    erlang:raise(Class, Error, Stack)
     end.
 
+-record(value_ref, {id :: index()}).
+-record(value, {op :: term(), args :: [argument()], type :: type()}).
+
+-type argument() :: #value_ref{} | literal().
+
 -type index() :: non_neg_integer().
--type reg_tab() :: gb_trees:tree(index(), 'none' | {'value', _}).
-
--record(st,				%Emulation state
-	{x=init_regs(0, term)        :: reg_tab(),%x register info.
-	 y=init_regs(0, initialized) :: reg_tab(),%y register info.
-	 f=init_fregs(),                %
-	 numy=none,			%Number of y registers.
-	 h=0,				%Available heap size.
-	 hf=0,				%Available heap size for floats.
-	 fls=undefined,			%Floating point state.
-	 ct=[],				%List of hot catch/try labels
-         setelem=false,                 %Previous instruction was setelement/3.
-         puts_left=none                 %put/1 instructions left.
-	}).
+
+-type literal() :: {atom, [] | atom()} |
+                   {float, [] | float()} |
+                   {integer, [] | integer()} |
+                   {literal, term()} |
+                   nil.
+
+-type tuple_sz() :: [non_neg_integer()] | %% Inexact
+                    non_neg_integer(). %% Exact.
+
+%% Match context type.
+-record(ms,
+        {id=make_ref() :: reference(),          %Unique ID.
+         valid=0 :: non_neg_integer(),          %Valid slots
+         slots=0 :: non_neg_integer()           %Number of slots
+        }).
+
+-type type() :: binary |
+                cons |
+                list |
+                map |
+                nil |
+                #ms{} |
+                ms_position |
+                none |
+                number |
+                term |
+                tuple_in_progress |
+                {tuple, tuple_sz(), #{ literal() => type() }} |
+                literal().
+
+-type tag() :: initialized |
+               uninitialized |
+               {catchtag, [label()]} |
+               {trytag, [label()]}.
+
+-type x_regs() :: #{ {x, index()} => #value_ref{} }.
+-type y_regs() :: #{ {y, index()} => tag() | #value_ref{} }.
+
+%% Emulation state
+-record(st,
+        {%% All known values.
+         vs=#{} :: #{ #value_ref{} => #value{} },
+         %% Register states.
+         xs=#{} :: x_regs(),
+         ys=#{} :: y_regs(),
+         f=init_fregs(),
+         %% A set of all registers containing "fragile" terms. That is, terms
+         %% that don't exist on our process heap and would be destroyed by a
+         %% GC.
+         fragile=cerl_sets:new() :: cerl_sets:set(),
+         %% Number of Y registers.
+         %%
+         %% Note that this may be 0 if there's a frame without saved values,
+         %% such as on a body-recursive call.
+         numy=none :: none | undecided | index(),
+         %% Available heap size.
+         h=0,
+         %Available heap size for floats.
+         hf=0,
+         %% Floating point state.
+         fls=undefined,
+         %% List of hot catch/try labels
+         ct=[],
+         %% Previous instruction was setelement/3.
+         setelem=false,
+         %% put/1 instructions left.
+         puts_left=none
+        }).
 
 -type label()        :: integer().
 -type label_set()    :: gb_sets:set(label()).
 -type branched_tab() :: gb_trees:tree(label(), #st{}).
 -type ft_tab()       :: gb_trees:tree().
 
--record(vst,				%Validator state
-	{current=none              :: #st{} | 'none',	%Current state
-	 branched=gb_trees:empty() :: branched_tab(),	%States at jumps
-	 labels=gb_sets:empty()    :: label_set(),	%All defined labels
-	 ft=gb_trees:empty()       :: ft_tab()          %Some other functions
-	 		% in the module (those that start with bs_start_match2).
-	}).
-
-%% Match context type.
--record(ms,
-	{id=make_ref() :: reference(),		%Unique ID.
-	 valid=0 :: non_neg_integer(),		%Valid slots
-	 slots=0 :: non_neg_integer()		%Number of slots
-	}).
+%% Validator state
+-record(vst,
+        {%% Current state
+         current=none              :: #st{} | 'none',
+         %% States at labels
+         branched=gb_trees:empty() :: branched_tab(),
+         %% All defined labels
+         labels=gb_sets:empty()    :: label_set(),
+         %% Argument information of other functions in the module
+         ft=gb_trees:empty()       :: ft_tab(),
+         %% Counter for #value_ref{} creation
+         ref_ctr=0                 :: index()
+        }).
+
+index_parameter_types([{function,_,_,Entry,Code0}|Fs], Acc0) ->
+    Code = dropwhile(fun({label,L}) when L =:= Entry -> false;
+			(_) -> true
+		     end, Code0),
+    case Code of
+	[{label,Entry}|Is] ->
+	    Acc = index_parameter_types_1(Is, Entry, Acc0),
+	    index_parameter_types(Fs, Acc);
+	_ ->
+	    %% Something serious is wrong. Ignore it for now.
+	    %% It will be detected and diagnosed later.
+	    index_parameter_types(Fs, Acc0)
+    end;
+index_parameter_types([], Acc) ->
+    gb_trees:from_orddict(sort(Acc)).
+
+index_parameter_types_1([{'%', {type_info, Reg, Type0}} | Is], Entry, Acc) ->
+    Type = case Type0 of
+                match_context -> #ms{};
+                _ -> Type0
+            end,
+    Key = {Entry, Reg},
+    index_parameter_types_1(Is, Entry, [{Key, Type} | Acc]);
+index_parameter_types_1(_, _, Acc) ->
+    Acc.
 
 validate_1(Is, Name, Arity, Entry, Ft) ->
     validate_2(labels(Is), Name, Arity, Entry, Ft).
@@ -179,14 +268,10 @@ validate_2({Ls1,Is}, Name, Arity, _Entry, _Ft) ->
 
 validate_3({Ls2,Is}, Name, Arity, Entry, Mod, Ls1, Ft) ->
     Offset = 1 + length(Ls1) + 1 + length(Ls2),
-    EntryOK = lists:member(Entry, Ls2),
+    EntryOK = member(Entry, Ls2),
     if
 	EntryOK ->
-	    St = init_state(Arity),
-	    Vst0 = #vst{current=St,
-			branched=gb_trees_from_list([{L,St} || L <- Ls1]),
-			labels=gb_sets:from_list(Ls1++Ls2),
-			ft=Ft},
+            Vst0 = init_vst(Arity, Ls1, Ls2, Ft),
 	    MFA = {Mod,Name,Arity},
 	    Vst = valfun(Is, MFA, Offset, Vst0),
 	    validate_fun_info_branches(Ls1, MFA, Vst);
@@ -203,7 +288,13 @@ validate_fun_info_branches([], _, _) -> ok.
 validate_fun_info_branches_1(Arity, {_,_,Arity}, _) -> ok;
 validate_fun_info_branches_1(X, {Mod,Name,Arity}=MFA, Vst) ->
     try
-	get_term_type({x,X}, Vst)
+        case Vst of
+            #vst{current=#st{numy=none}} ->
+                ok;
+            #vst{current=#st{numy=Size}} ->
+                error({unexpected_stack_frame,Size})
+        end,
+        assert_term({x,X}, Vst)
     catch Error ->
 	    I = {func_info,{atom,Mod},{atom,Name},Arity},
 	    Offset = 2,
@@ -224,19 +315,22 @@ labels_1([{line,_}|Is], R) ->
 labels_1(Is, R) ->
     {reverse(R),Is}.
 
-init_state(Arity) ->
-    Xs = init_regs(Arity, term),
-    Ys = init_regs(0, initialized),
-    kill_heap_allocation(#st{x=Xs,y=Ys,numy=none,ct=[]}).
+init_vst(Arity, Ls1, Ls2, Ft) ->
+    Vst0 = init_function_args(Arity - 1, #vst{current=#st{}}),
+    Branches = gb_trees_from_list([{L,Vst0#vst.current} || L <- Ls1]),
+    Labels = gb_sets:from_list(Ls1++Ls2),
+    Vst0#vst{branched=Branches,
+             labels=Labels,
+             ft=Ft}.
+
+init_function_args(-1, Vst) ->
+    Vst;
+init_function_args(X, Vst) ->
+    init_function_args(X - 1, create_term(term, argument, [], {x,X}, Vst)).
 
 kill_heap_allocation(St) ->
     St#st{h=0,hf=0}.
 
-init_regs(0, _) ->
-    gb_trees:empty();
-init_regs(N, Type) ->
-    gb_trees_from_list([{R,Type} || R <- lists:seq(0, N-1)]).
-
 valfun([], MFA, _Offset, #vst{branched=Targets0,labels=Labels0}=Vst) ->
     Targets = gb_trees:keys(Targets0),
     Labels = gb_sets:to_list(Labels0),
@@ -257,20 +351,25 @@ valfun([I|Is], MFA, Offset, Vst0) ->
 
 %% Instructions that are allowed in dead code or when failing,
 %% that is while the state is undecided in some way.
-valfun_1({label,Lbl}, #vst{current=St0,branched=B,labels=Lbls}=Vst) ->
-    St = merge_states(Lbl, St0, B),
-    Vst#vst{current=St,branched=gb_trees:enter(Lbl, St, B),
-	    labels=gb_sets:add(Lbl, Lbls)};
+valfun_1({label,Lbl}, #vst{current=St0,
+                           ref_ctr=Counter0,
+                           branched=B,
+                           labels=Lbls}=Vst) ->
+    {St, Counter} = merge_states(Lbl, St0, B, Counter0),
+    Vst#vst{current=St,
+            ref_ctr=Counter,
+            branched=gb_trees:enter(Lbl, St, B),
+            labels=gb_sets:add(Lbl, Lbls)};
 valfun_1(_I, #vst{current=none}=Vst) ->
     %% Ignore instructions after erlang:error/1,2, which
     %% the original R10B compiler thought would return.
     Vst;
 valfun_1({badmatch,Src}, Vst) ->
-    assert_term(Src, Vst),
+    assert_durable_term(Src, Vst),
     verify_y_init(Vst),
     kill_state(Vst);
 valfun_1({case_end,Src}, Vst) ->
-    assert_term(Src, Vst),
+    assert_durable_term(Src, Vst),
     verify_y_init(Vst),
     kill_state(Vst);
 valfun_1(if_end, Vst) ->
@@ -278,35 +377,21 @@ valfun_1(if_end, Vst) ->
     kill_state(Vst);
 valfun_1({try_case_end,Src}, Vst) ->
     verify_y_init(Vst),
-    assert_term(Src, Vst),
+    assert_durable_term(Src, Vst),
     kill_state(Vst);
-%% Instructions that can not cause exceptions
-valfun_1({bs_context_to_binary,Ctx}, #vst{current=#st{x=Xs}}=Vst) ->
-    case Ctx of
-	{Tag,X} when Tag =:= x; Tag =:= y ->
-	    Type = case gb_trees:lookup(X, Xs) of
-		       {value,#ms{}} -> term;
-		       _ -> get_term_type(Ctx, Vst)
-		   end,
-	    set_type_reg(Type, Ctx, Vst);
-	_ ->
-	    error({bad_source,Ctx})
-    end;
+%% Instructions that cannot cause exceptions
+valfun_1({bs_get_tail,Ctx,Dst,Live}, Vst0) ->
+    bsm_validate_context(Ctx, Vst0),
+    verify_live(Live, Vst0),
+    verify_y_init(Vst0),
+    Vst = prune_x_regs(Live, Vst0),
+    extract_term(binary, bs_get_tail, [Ctx], Dst, Vst, Vst0);
 valfun_1(bs_init_writable=I, Vst) ->
     call(I, 1, Vst);
 valfun_1(build_stacktrace=I, Vst) ->
     call(I, 1, Vst);
-valfun_1({move,{y,_}=Src,{y,_}=Dst}, Vst) ->
-    %% The stack trimming optimization may generate a move from an initialized
-    %% but unassigned Y register to another Y register.
-    case get_term_type_1(Src, Vst) of
-	{catchtag,_} -> error({catchtag,Src});
-	{trytag,_} -> error({trytag,Src});
-	Type -> set_type_reg(Type, Dst, Vst)
-    end;
 valfun_1({move,Src,Dst}, Vst) ->
-    Type = get_move_term_type(Src, Vst),
-    set_type_reg(Type, Dst, Vst);
+    assign(Src, Dst, Vst);
 valfun_1({fmove,Src,{fr,_}=Dst}, Vst) ->
     assert_type(float, Src, Vst),
     set_freg(Dst, Vst);
@@ -314,15 +399,15 @@ valfun_1({fmove,{fr,_}=Src,Dst}, Vst0) ->
     assert_freg_set(Src, Vst0),
     assert_fls(checked, Vst0),
     Vst = eat_heap_float(Vst0),
-    set_type_reg({float,[]}, Dst, Vst);
-valfun_1({kill,{y,_}=Reg}, Vst) ->
-    set_type_y(initialized, Reg, Vst);
-valfun_1({init,{y,_}=Reg}, Vst) ->
-    set_type_y(initialized, Reg, Vst);
+    create_term({float,[]}, fmove, [], Dst, Vst);
+valfun_1({kill,Reg}, Vst) ->
+    create_tag(initialized, kill, [], Reg, Vst);
+valfun_1({init,Reg}, Vst) ->
+    create_tag(initialized, init, [], Reg, Vst);
 valfun_1({test_heap,Heap,Live}, Vst) ->
     test_heap(Heap, Live, Vst);
-valfun_1({bif,Op,{f,_},Src,Dst}=I, Vst) ->
-    case is_bif_safe(Op, length(Src)) of
+valfun_1({bif,Op,{f,_},Ss,Dst}=I, Vst) ->
+    case is_bif_safe(Op, length(Ss)) of
 	false ->
 	    %% Since the BIF can fail, make sure that any catch state
 	    %% is updated.
@@ -330,21 +415,32 @@ valfun_1({bif,Op,{f,_},Src,Dst}=I, Vst) ->
 	true ->
 	    %% It can't fail, so we finish handling it here (not updating
 	    %% catch state).
-	    validate_src(Src, Vst),
-	    Type = bif_type(Op, Src, Vst),
-	    set_type_reg(Type, Dst, Vst)
+	    validate_src(Ss, Vst),
+	    Type = bif_return_type(Op, Ss, Vst),
+	    extract_term(Type, {bif,Op}, Ss, Dst, Vst)
     end;
 %% Put instructions.
 valfun_1({put_list,A,B,Dst}, Vst0) ->
     assert_term(A, Vst0),
     assert_term(B, Vst0),
     Vst = eat_heap(2, Vst0),
-    set_type_reg(cons, Dst, Vst);
+    create_term(cons, put_list, [A, B], Dst, Vst);
+valfun_1({put_tuple2,Dst,{list,Elements}}, Vst0) ->
+    _ = [assert_term(El, Vst0) || El <- Elements],
+    Size = length(Elements),
+    Vst = eat_heap(Size+1, Vst0),
+    {Es,_} = foldl(fun(Val, {Es0, Index}) ->
+                       Type = get_term_type(Val, Vst0),
+                       Es = set_element_type({integer,Index}, Type, Es0),
+                       {Es, Index + 1}
+                   end, {#{}, 1}, Elements),
+    Type = {tuple,Size,Es},
+    create_term(Type, put_tuple2, [], Dst, Vst);
 valfun_1({put_tuple,Sz,Dst}, Vst0) when is_integer(Sz) ->
     Vst1 = eat_heap(1, Vst0),
-    Vst = set_type_reg(tuple_in_progress, Dst, Vst1),
+    Vst = create_term(tuple_in_progress, put_tuple, [], Dst, Vst1),
     #vst{current=St0} = Vst,
-    St = St0#st{puts_left={Sz,{Dst,{tuple,Sz}}}},
+    St = St0#st{puts_left={Sz,{Dst,Sz,#{}}}},
     Vst#vst{current=St};
 valfun_1({put,Src}, Vst0) ->
     assert_term(Src, Vst0),
@@ -353,11 +449,14 @@ valfun_1({put,Src}, Vst0) ->
     case St0 of
         #st{puts_left=none} ->
             error(not_building_a_tuple);
-        #st{puts_left={1,{Dst,Type}}} ->
+        #st{puts_left={1,{Dst,Sz,Es0}}} ->
+            Es = Es0#{ {integer,Sz} => get_term_type(Src, Vst0) },
             St = St0#st{puts_left=none},
-            set_type_reg(Type, Dst, Vst#vst{current=St});
-        #st{puts_left={PutsLeft,Info}} when is_integer(PutsLeft) ->
-            St = St0#st{puts_left={PutsLeft-1,Info}},
+            create_term({tuple,Sz,Es}, put_tuple, [], Dst, Vst#vst{current=St});
+        #st{puts_left={PutsLeft,{Dst,Sz,Es0}}} when is_integer(PutsLeft) ->
+            Index = Sz - PutsLeft + 1,
+            Es = Es0#{ {integer,Index} => get_term_type(Src, Vst0) },
+            St = St0#st{puts_left={PutsLeft-1,{Dst,Sz,Es}}},
             Vst#vst{current=St}
     end;
 %% Instructions for optimization of selective receives.
@@ -370,13 +469,28 @@ valfun_1(remove_message, Vst) ->
     %% The message term is no longer fragile. It can be used
     %% without restrictions.
     remove_fragility(Vst);
+valfun_1({'%', {type_info, Reg, match_context}}, Vst) ->
+    update_type(fun meet/2, #ms{}, Reg, Vst);
+valfun_1({'%', {type_info, Reg, Type}}, Vst) ->
+    %% Explicit type information inserted by optimization passes to indicate
+    %% that Reg has a certain type, so that we can accept cross-function type
+    %% optimizations.
+    update_type(fun meet/2, Type, Reg, Vst);
+valfun_1({'%', {remove_fragility, Reg}}, Vst) ->
+    %% This is a hack to make prim_eval:'receive'/2 work.
+    %%
+    %% Normally it's illegal to pass fragile terms as a function argument as we
+    %% have no way of knowing what the callee will do with it, but we know that
+    %% prim_eval:'receive'/2 won't leak the term, nor cause a GC since it's
+    %% disabled while matching messages.
+    remove_fragility(Reg, Vst);
 valfun_1({'%',_}, Vst) ->
     Vst;
 valfun_1({line,_}, Vst) ->
     Vst;
 %% Exception generating calls
 valfun_1({call_ext,Live,Func}=I, Vst) ->
-    case return_type(Func, Vst) of
+    case call_return_type(Func, Vst) of
 	exception ->
 	    verify_live(Live, Vst),
             %% The stack will be scanned, so Y registers
@@ -391,88 +505,122 @@ valfun_1(_I, #vst{current=#st{ct=undecided}}) ->
 %%
 %% Allocate and deallocate, et.al
 valfun_1({allocate,Stk,Live}, Vst) ->
-    allocate(false, Stk, 0, Live, Vst);
+    allocate(uninitialized, Stk, 0, Live, Vst);
 valfun_1({allocate_heap,Stk,Heap,Live}, Vst) ->
-    allocate(false, Stk, Heap, Live, Vst);
+    allocate(uninitialized, Stk, Heap, Live, Vst);
 valfun_1({allocate_zero,Stk,Live}, Vst) ->
-    allocate(true, Stk, 0, Live, Vst);
+    allocate(initialized, Stk, 0, Live, Vst);
 valfun_1({allocate_heap_zero,Stk,Heap,Live}, Vst) ->
-    allocate(true, Stk, Heap, Live, Vst);
+    allocate(initialized, Stk, Heap, Live, Vst);
 valfun_1({deallocate,StkSize}, #vst{current=#st{numy=StkSize}}=Vst) ->
     verify_no_ct(Vst),
     deallocate(Vst);
 valfun_1({deallocate,_}, #vst{current=#st{numy=NumY}}) ->
     error({allocated,NumY});
-valfun_1({trim,N,Remaining}, #vst{current=#st{y=Yregs0,numy=NumY}=St}=Vst) ->
+valfun_1({trim,N,Remaining}, #vst{current=St0}=Vst) ->
+    #st{numy=NumY} = St0,
     if
-	N =< NumY, N+Remaining =:= NumY ->
-	    Yregs1 = [{Y-N,Type} || {Y,Type} <- gb_trees:to_list(Yregs0), Y >= N],
-	    Yregs = gb_trees_from_list(Yregs1),
-	    Vst#vst{current=St#st{y=Yregs,numy=NumY-N}};
-	true ->
-	    error({trim,N,Remaining,allocated,NumY})
+        N =< NumY, N+Remaining =:= NumY ->
+            Vst#vst{current=trim_stack(N, 0, NumY, St0)};
+        N > NumY; N+Remaining =/= NumY ->
+            error({trim,N,Remaining,allocated,NumY})
     end;
 %% Catch & try.
-valfun_1({'catch',Dst,{f,Fail}}, Vst0) when Fail /= none ->
-    Vst = #vst{current=#st{ct=Fails}=St} = 
-	set_type_y({catchtag,[Fail]}, Dst, Vst0),
-    Vst#vst{current=St#st{ct=[[Fail]|Fails]}};
-valfun_1({'try',Dst,{f,Fail}}, Vst0) ->
-    Vst = #vst{current=#st{ct=Fails}=St} = 
-	set_type_y({trytag,[Fail]}, Dst, Vst0),
-    Vst#vst{current=St#st{ct=[[Fail]|Fails]}};
-valfun_1({catch_end,Reg}, #vst{current=#st{ct=[Fail|Fails]}}=Vst0) ->
-    case get_special_y_type(Reg, Vst0) of
-	{catchtag,Fail} ->
-	    Vst = #vst{current=St} = set_catch_end(Reg, Vst0),
-	    Xs = gb_trees_from_list([{0,term}]),
-	    Vst#vst{current=St#st{x=Xs,ct=Fails,fls=undefined}};
-	Type ->
-	    error({bad_type,Type})
+valfun_1({'catch',Dst,{f,Fail}}, Vst) when Fail =/= none ->
+    init_try_catch_branch(catchtag, Dst, Fail, Vst);
+valfun_1({'try',Dst,{f,Fail}}, Vst)  when Fail =/= none ->
+    init_try_catch_branch(trytag, Dst, Fail, Vst);
+valfun_1({catch_end,Reg}, #vst{current=#st{ct=[Fail|_]}}=Vst0) ->
+    case get_tag_type(Reg, Vst0) of
+        {catchtag,Fail} ->
+            %% {x,0} contains the caught term, if any.
+            create_term(term, catch_end, [], {x,0}, kill_catch_tag(Reg, Vst0));
+        Type ->
+            error({wrong_tag_type,Type})
     end;
-valfun_1({try_end,Reg}, #vst{current=#st{ct=[Fail|Fails]}=St0}=Vst0) ->
-    case get_special_y_type(Reg, Vst0) of
-	{trytag,Fail} ->
-	    Vst = case Fail of
-		      [FailLabel] -> branch_state(FailLabel, Vst0);
-		      _ -> Vst0
-		  end,
-	    St = St0#st{ct=Fails,fls=undefined},
-	    set_catch_end(Reg, Vst#vst{current=St});
-	Type ->
-	    error({bad_type,Type})
+valfun_1({try_end,Reg}, #vst{current=#st{ct=[Fail|_]}}=Vst) ->
+    case get_tag_type(Reg, Vst) of
+        {trytag,Fail} ->
+            %% Kill the catch tag, note that x registers are unaffected.
+            kill_catch_tag(Reg, Vst);
+        Type ->
+            error({wrong_tag_type,Type})
     end;
-valfun_1({try_case,Reg}, #vst{current=#st{ct=[Fail|Fails]}}=Vst0) ->
-    case get_special_y_type(Reg, Vst0) of
-	{trytag,Fail} ->
-	    Vst = #vst{current=St} = set_catch_end(Reg, Vst0),
-	    Xs = gb_trees_from_list([{0,{atom,[]}},{1,term},{2,term}]),
-	    Vst#vst{current=St#st{x=Xs,ct=Fails,fls=undefined}};
-	Type ->
-	    error({bad_type,Type})
+valfun_1({try_case,Reg}, #vst{current=#st{ct=[Fail|_]}}=Vst0) ->
+    case get_tag_type(Reg, Vst0) of
+        {trytag,Fail} ->
+            %% Kill the catch tag and all x registers.
+            Vst1 = prune_x_regs(0, kill_catch_tag(Reg, Vst0)),
+
+            %% Class:Error:Stacktrace
+            Vst2 = create_term({atom,[]}, try_case, [], {x,0}, Vst1),
+            Vst = create_term(term, try_case, [], {x,1}, Vst2),
+            create_term(term, try_case, [], {x,2}, Vst);
+        Type ->
+            error({wrong_tag_type,Type})
     end;
 valfun_1({get_list,Src,D1,D2}, Vst0) ->
+    assert_not_literal(Src),
     assert_type(cons, Src, Vst0),
-    Vst = set_type_reg(term, Src, D1, Vst0),
-    set_type_reg(term, Src, D2, Vst);
+    Vst = extract_term(term, get_hd, [Src], D1, Vst0),
+    extract_term(term, get_tl, [Src], D2, Vst);
 valfun_1({get_hd,Src,Dst}, Vst) ->
+    assert_not_literal(Src),
     assert_type(cons, Src, Vst),
-    set_type_reg(term, Src, Dst, Vst);
+    extract_term(term, get_hd, [Src], Dst, Vst);
 valfun_1({get_tl,Src,Dst}, Vst) ->
+    assert_not_literal(Src),
     assert_type(cons, Src, Vst),
-    set_type_reg(term, Src, Dst, Vst);
-valfun_1({get_tuple_element,Src,I,Dst}, Vst) ->
-    assert_type({tuple_element,I+1}, Src, Vst),
-    set_type_reg(term, Src, Dst, Vst);
+    extract_term(term, get_tl, [Src], Dst, Vst);
+valfun_1({get_tuple_element,Src,N,Dst}, Vst) ->
+    assert_not_literal(Src),
+    assert_type({tuple_element,N+1}, Src, Vst),
+    Index = {integer,N+1},
+    Type = get_element_type(Index, Src, Vst),
+    extract_term(Type, {bif,element}, [Index, Src], Dst, Vst);
+valfun_1({jump,{f,Lbl}}, Vst) ->
+    branch(Lbl, Vst,
+           fun(SuccVst) ->
+                   %% The next instruction is never executed.
+                   kill_state(SuccVst)
+           end);
 valfun_1(I, Vst) ->
     valfun_2(I, Vst).
 
-%% Update branched state if necessary and try next set of instructions.
-valfun_2(I, #vst{current=#st{ct=[]}}=Vst) ->
-    valfun_3(I, Vst);
+init_try_catch_branch(Tag, Dst, Fail, Vst0) ->
+    Vst1 = create_tag({Tag,[Fail]}, 'try_catch', [], Dst, Vst0),
+    #vst{current=#st{ct=Fails}=St0} = Vst1,
+    St = St0#st{ct=[[Fail]|Fails]},
+    Vst = Vst0#vst{current=St},
+
+    branch(Fail, Vst,
+           fun(CatchVst) ->
+                    #vst{current=#st{ys=Ys}} = CatchVst,
+                    maps:fold(fun init_catch_handler_1/3, CatchVst, Ys)
+           end,
+           fun(SuccVst) ->
+                    %% All potentially-throwing instructions after this
+                    %% one will implicitly branch to the fail label;
+                    %% see valfun_2/2
+                    SuccVst
+           end).
+
+%% Set the initial state at the try/catch label. Assume that Y registers
+%% contain terms or try/catch tags.
+init_catch_handler_1(Reg, initialized, Vst) ->
+    create_term(term, 'catch_handler', [], Reg, Vst);
+init_catch_handler_1(Reg, uninitialized, Vst) ->
+    create_term(term, 'catch_handler', [], Reg, Vst);
+init_catch_handler_1(_, _, Vst) ->
+    Vst.
+
 valfun_2(I, #vst{current=#st{ct=[[Fail]|_]}}=Vst) when is_integer(Fail) ->
-    %% Update branched state
+    %% We have an active try/catch tag and we can jump there from this
+    %% instruction, so we need to update the branched state of the try/catch
+    %% handler.
     valfun_3(I, branch_state(Fail, Vst));
+valfun_2(I, #vst{current=#st{ct=[]}}=Vst) ->
+    valfun_3(I, Vst);
 valfun_2(_, _) ->
     error(ambiguous_catch_try_state).
 
@@ -480,17 +628,23 @@ valfun_2(_, _) ->
 %% Floating point.
 valfun_3({fconv,Src,{fr,_}=Dst}, Vst) ->
     assert_term(Src, Vst),
-    set_freg(Dst, Vst);
-valfun_3({bif,fadd,_,[_,_]=Src,Dst}, Vst) ->
-    float_op(Src, Dst, Vst);
-valfun_3({bif,fdiv,_,[_,_]=Src,Dst}, Vst) ->
-    float_op(Src, Dst, Vst);
-valfun_3({bif,fmul,_,[_,_]=Src,Dst}, Vst) ->
-    float_op(Src, Dst, Vst);
-valfun_3({bif,fnegate,_,[_]=Src,Dst}, Vst) ->
-    float_op(Src, Dst, Vst);
-valfun_3({bif,fsub,_,[_,_]=Src,Dst}, Vst) ->
-    float_op(Src, Dst, Vst);
+
+    %% An exception is raised on error, hence branching to 0.
+    branch(0, Vst,
+           fun(SuccVst0) ->
+               SuccVst = update_type(fun meet/2, number, Src, SuccVst0),
+               set_freg(Dst, SuccVst)
+           end);
+valfun_3({bif,fadd,_,[_,_]=Ss,Dst}, Vst) ->
+    float_op(Ss, Dst, Vst);
+valfun_3({bif,fdiv,_,[_,_]=Ss,Dst}, Vst) ->
+    float_op(Ss, Dst, Vst);
+valfun_3({bif,fmul,_,[_,_]=Ss,Dst}, Vst) ->
+    float_op(Ss, Dst, Vst);
+valfun_3({bif,fnegate,_,[_]=Ss,Dst}, Vst) ->
+    float_op(Ss, Dst, Vst);
+valfun_3({bif,fsub,_,[_,_]=Ss,Dst}, Vst) ->
+    float_op(Ss, Dst, Vst);
 valfun_3(fclearerror, Vst) ->
     case get_fls(Vst) of
 	undefined -> ok;
@@ -541,67 +695,87 @@ valfun_4({call_ext_last,_,_,_}, #vst{current=#st{numy=NumY}}) ->
 valfun_4({make_fun2,_,_,_,Live}, Vst) ->
     call(make_fun, Live, Vst);
 %% Other BIFs
-valfun_4({bif,tuple_size,{f,Fail},[Tuple],Dst}, Vst0) ->
-    TupleType0 = get_term_type(Tuple, Vst0),
-    Vst1 = branch_state(Fail, Vst0),
-    TupleType = upgrade_tuple_type({tuple,[0]}, TupleType0),
-    Vst = set_type(TupleType, Tuple, Vst1),
-    set_type_reg({integer,[]}, Dst, Vst);
-valfun_4({bif,element,{f,Fail},[Pos,Tuple],Dst}, Vst0) ->
-    TupleType0 = get_term_type(Tuple, Vst0),
-    PosType = get_term_type(Pos, Vst0),
-    Vst1 = branch_state(Fail, Vst0),
-    TupleType = upgrade_tuple_type({tuple,[get_tuple_size(PosType)]}, TupleType0),
-    Vst = set_type(TupleType, Tuple, Vst1),
-    set_type_reg(term, Tuple, Dst, Vst);
+valfun_4({bif,element,{f,Fail},[Pos,Src],Dst}, Vst) ->
+    branch(Fail, Vst,
+           fun(SuccVst0) ->
+                   PosType = get_term_type(Pos, SuccVst0),
+                   TupleType = {tuple,[get_tuple_size(PosType)],#{}},
+
+                   SuccVst1 = update_type(fun meet/2, TupleType,
+                                         Src, SuccVst0),
+                   SuccVst = update_type(fun meet/2, {integer,[]},
+                                         Pos, SuccVst1),
+
+                   ElementType = get_element_type(PosType, Src, SuccVst),
+                   extract_term(ElementType, {bif,element}, [Pos,Src],
+                                Dst, SuccVst)
+           end);
 valfun_4({bif,raise,{f,0},Src,_Dst}, Vst) ->
     validate_src(Src, Vst),
     kill_state(Vst);
 valfun_4(raw_raise=I, Vst) ->
     call(I, 3, Vst);
-valfun_4({bif,map_get,{f,Fail},[_Key,Map]=Src,Dst}, Vst0) ->
-    validate_src(Src, Vst0),
-    Vst1 = branch_state(Fail, Vst0),
-    Vst = set_type(map, Map, Vst1),
-    Type = propagate_fragility(term, Src, Vst),
-    set_type_reg(Type, Dst, Vst);
-valfun_4({bif,is_map_key,{f,Fail},[_Key,Map]=Src,Dst}, Vst0) ->
-    validate_src(Src, Vst0),
-    Vst1 = branch_state(Fail, Vst0),
-    Vst = set_type(map, Map, Vst1),
-    Type = propagate_fragility(bool, Src, Vst),
-    set_type_reg(Type, Dst, Vst);
-valfun_4({bif,Op,{f,Fail},Src,Dst}, Vst0) ->
-    validate_src(Src, Vst0),
-    Vst = branch_state(Fail, Vst0),
-    Type0 = bif_type(Op, Src, Vst),
-    Type = propagate_fragility(Type0, Src, Vst),
-    set_type_reg(Type, Dst, Vst);
-valfun_4({gc_bif,Op,{f,Fail},Live,Src,Dst}, #vst{current=St0}=Vst0) ->
+valfun_4({bif,Op,{f,Fail},[Src]=Ss,Dst}, Vst) when Op =:= hd; Op =:= tl ->
+    assert_term(Src, Vst),
+    branch(Fail, Vst,
+           fun(FailVst) ->
+                   update_type(fun subtract/2, cons, Src, FailVst)
+           end,
+           fun(SuccVst0) ->
+                   SuccVst = update_type(fun meet/2, cons, Src, SuccVst0),
+                   extract_term(term, {bif,Op}, Ss, Dst, SuccVst)
+           end);
+valfun_4({bif,Op,{f,Fail},Ss,Dst}, Vst) ->
+    validate_src(Ss, Vst),
+    branch(Fail, Vst,
+           fun(SuccVst0) ->
+                   %% Infer argument types. Note that we can't subtract
+                   %% types as the BIF could fail for reasons other than
+                   %% bad argument types.
+                   ArgTypes = bif_arg_types(Op, Ss),
+                   SuccVst = foldl(fun({Arg, T}, V) ->
+                                           update_type(fun meet/2, T, Arg, V)
+                                   end, SuccVst0, zip(Ss, ArgTypes)),
+                   Type = bif_return_type(Op, Ss, SuccVst),
+                   extract_term(Type, {bif,Op}, Ss, Dst, SuccVst)
+           end);
+valfun_4({gc_bif,Op,{f,Fail},Live,Ss,Dst}, #vst{current=St0}=Vst0) ->
+    validate_src(Ss, Vst0),
     verify_live(Live, Vst0),
     verify_y_init(Vst0),
+
+    %% Heap allocations and X registers are killed regardless of whether we
+    %% fail or not, as we may fail after GC.
     St = kill_heap_allocation(St0),
-    Vst1 = Vst0#vst{current=St},
-    Vst2 = branch_state(Fail, Vst1),
-    Vst = prune_x_regs(Live, Vst2),
-    validate_src(Src, Vst),
-    Type0 = bif_type(Op, Src, Vst),
-    Type = propagate_fragility(Type0, Src, Vst),
-    set_type_reg(Type, Dst, Vst);
+    Vst = prune_x_regs(Live, Vst0#vst{current=St}),
+
+    branch(Fail, Vst,
+           fun(SuccVst0) ->
+                   ArgTypes = bif_arg_types(Op, Ss),
+                   SuccVst = foldl(fun({Arg, T}, V) ->
+                                           update_type(fun meet/2, T, Arg, V)
+                                   end, SuccVst0, zip(Ss, ArgTypes)),
+
+                   Type = bif_return_type(Op, Ss, SuccVst),
+
+                   %% We're passing Vst0 as the original because the
+                   %% registers were pruned before the branch.
+                   extract_term(Type, {gc_bif,Op}, Ss, Dst, SuccVst, Vst0)
+           end);
 valfun_4(return, #vst{current=#st{numy=none}}=Vst) ->
-    assert_term({x,0}, Vst),
+    assert_durable_term({x,0}, Vst),
     kill_state(Vst);
 valfun_4(return, #vst{current=#st{numy=NumY}}) ->
     error({stack_frame,NumY});
-valfun_4({jump,{f,Lbl}}, Vst) ->
-    kill_state(branch_state(Lbl, Vst));
-valfun_4({loop_rec,{f,Fail},Dst}, Vst0) ->
-    Vst = branch_state(Fail, Vst0),
-    %% This term may not be part of the root set until
-    %% remove_message/0 is executed. If control transfers
-    %% to the loop_rec_end/1 instruction, no part of
-    %% this term must be stored in a Y register.
-    set_type_reg({fragile,term}, Dst, Vst);
+valfun_4({loop_rec,{f,Fail},Dst}, Vst) ->
+    %% This term may not be part of the root set until remove_message/0 is
+    %% executed. If control transfers to the loop_rec_end/1 instruction, no
+    %% part of this term must be stored in a Y register.
+    branch(Fail, Vst,
+           fun(SuccVst0) ->
+                   {Ref, SuccVst} = new_value(term, loop_rec, [], SuccVst0),
+                   mark_fragile(Dst, set_reg_vref(Ref, Dst, SuccVst))
+           end);
 valfun_4({wait,_}, Vst) ->
     verify_y_init(Vst),
     kill_state(Vst);
@@ -612,131 +786,169 @@ valfun_4({wait_timeout,_,Src}, Vst) ->
 valfun_4({loop_rec_end,_}, Vst) ->
     verify_y_init(Vst),
     kill_state(Vst);
-valfun_4(timeout, #vst{current=St}=Vst) ->
-    Vst#vst{current=St#st{x=init_regs(0, term)}};
+valfun_4(timeout, Vst) ->
+    prune_x_regs(0, Vst);
 valfun_4(send, Vst) ->
     call(send, 2, Vst);
-valfun_4({set_tuple_element,Src,Tuple,I}, Vst) ->
+valfun_4({set_tuple_element,Src,Tuple,N}, Vst) ->
+    I = N + 1,
     assert_term(Src, Vst),
-    assert_type({tuple_element,I+1}, Tuple, Vst),
-    Vst;
+    assert_type({tuple_element,I}, Tuple, Vst),
+    %% Manually update the tuple type; we can't rely on the ordinary update
+    %% helpers as we must support overwriting (rather than just widening or
+    %% narrowing) known elements, and we can't use extract_term either since
+    %% the source tuple may be aliased.
+    {tuple, Sz, Es0} = get_term_type(Tuple, Vst),
+    Es = set_element_type({integer,I}, get_term_type(Src, Vst), Es0),
+    override_type({tuple, Sz, Es}, Tuple, Vst);
 %% Match instructions.
 valfun_4({select_val,Src,{f,Fail},{list,Choices}}, Vst) ->
     assert_term(Src, Vst),
-    Lbls = [L || {f,L} <- Choices]++[Fail],
-    kill_state(foldl(fun(L, S) -> branch_state(L, S) end, Vst, Lbls));
+    assert_choices(Choices),
+    validate_select_val(Fail, Choices, Src, Vst);
 valfun_4({select_tuple_arity,Tuple,{f,Fail},{list,Choices}}, Vst) ->
     assert_type(tuple, Tuple, Vst),
-    kill_state(branch_arities(Choices, Tuple, branch_state(Fail, Vst)));
+    assert_arities(Choices),
+    validate_select_tuple_arity(Fail, Choices, Tuple, Vst);
 
 %% New bit syntax matching instructions.
-valfun_4({test,bs_start_match2,{f,Fail},Live,[Ctx,NeedSlots],Ctx}, Vst0) ->
-    %% If source and destination registers are the same, match state
-    %% is OK as input.
-    CtxType = get_move_term_type(Ctx, Vst0),
-    verify_live(Live, Vst0),
-    verify_y_init(Vst0),
-    Vst1 = prune_x_regs(Live, Vst0),
-    BranchVst = case CtxType of
-		    #ms{} ->
-			%% The failure branch will never be taken when Ctx
-			%% is a match context. Therefore, the type for Ctx
-			%% at the failure label must not be match_context
-			%% (or we could reject legal code).
-			set_type_reg(term, Ctx, Vst1);
-		    _ ->
-			Vst1
-		end,
-    Vst = branch_state(Fail, BranchVst),
-    set_type_reg(bsm_match_state(NeedSlots), Ctx, Vst);
-valfun_4({test,bs_start_match2,{f,Fail},Live,[Src,Slots],Dst}, Vst0) ->
-    assert_term(Src, Vst0),
-    verify_live(Live, Vst0),
-    verify_y_init(Vst0),
-    Vst1 = prune_x_regs(Live, Vst0),
-    Vst = branch_state(Fail, Vst1),
-    set_type_reg(bsm_match_state(Slots), Src, Dst, Vst);
+valfun_4({test,bs_start_match3,{f,Fail},Live,[Src],Dst}, Vst) ->
+    validate_bs_start_match(Fail, Live, bsm_match_state(), Src, Dst, Vst);
+valfun_4({test,bs_start_match2,{f,Fail},Live,[Src,Slots],Dst}, Vst) ->
+    validate_bs_start_match(Fail, Live, bsm_match_state(Slots), Src, Dst, Vst);
 valfun_4({test,bs_match_string,{f,Fail},[Ctx,_,_]}, Vst) ->
     bsm_validate_context(Ctx, Vst),
-    branch_state(Fail, Vst);
+    branch(Fail, Vst, fun(V) -> V end);
 valfun_4({test,bs_skip_bits2,{f,Fail},[Ctx,Src,_,_]}, Vst) ->
     bsm_validate_context(Ctx, Vst),
     assert_term(Src, Vst),
-    branch_state(Fail, Vst);
+    branch(Fail, Vst, fun(V) -> V end);
 valfun_4({test,bs_test_tail2,{f,Fail},[Ctx,_]}, Vst) ->
     bsm_validate_context(Ctx, Vst),
-    branch_state(Fail, Vst);
+    branch(Fail, Vst, fun(V) -> V end);
 valfun_4({test,bs_test_unit,{f,Fail},[Ctx,_]}, Vst) ->
     bsm_validate_context(Ctx, Vst),
-    branch_state(Fail, Vst);
+    branch(Fail, Vst, fun(V) -> V end);
 valfun_4({test,bs_skip_utf8,{f,Fail},[Ctx,Live,_]}, Vst) ->
     validate_bs_skip_utf(Fail, Ctx, Live, Vst);
 valfun_4({test,bs_skip_utf16,{f,Fail},[Ctx,Live,_]}, Vst) ->
     validate_bs_skip_utf(Fail, Ctx, Live, Vst);
 valfun_4({test,bs_skip_utf32,{f,Fail},[Ctx,Live,_]}, Vst) ->
     validate_bs_skip_utf(Fail, Ctx, Live, Vst);
-valfun_4({test,bs_get_integer2,{f,Fail},Live,[Ctx,_,_,_],Dst}, Vst) ->
-    validate_bs_get(Fail, Ctx, Live, {integer, []}, Dst, Vst);
-valfun_4({test,bs_get_float2,{f,Fail},Live,[Ctx,_,_,_],Dst}, Vst) ->
-    validate_bs_get(Fail, Ctx, Live, {float, []}, Dst, Vst);
-valfun_4({test,bs_get_binary2,{f,Fail},Live,[Ctx,_,_,_],Dst}, Vst) ->
-    Type = propagate_fragility(term, [Ctx], Vst),
-    validate_bs_get(Fail, Ctx, Live, Type, Dst, Vst);
-valfun_4({test,bs_get_utf8,{f,Fail},Live,[Ctx,_],Dst}, Vst) ->
-    validate_bs_get(Fail, Ctx, Live, {integer, []}, Dst, Vst);
-valfun_4({test,bs_get_utf16,{f,Fail},Live,[Ctx,_],Dst}, Vst) ->
-    validate_bs_get(Fail, Ctx, Live, {integer, []}, Dst, Vst);
-valfun_4({test,bs_get_utf32,{f,Fail},Live,[Ctx,_],Dst}, Vst) ->
-    validate_bs_get(Fail, Ctx, Live, {integer, []}, Dst, Vst);
+valfun_4({test,bs_get_integer2=Op,{f,Fail},Live,[Ctx,_,_,_],Dst}, Vst) ->
+    validate_bs_get(Op, Fail, Ctx, Live, {integer, []}, Dst, Vst);
+valfun_4({test,bs_get_float2=Op,{f,Fail},Live,[Ctx,_,_,_],Dst}, Vst) ->
+    validate_bs_get(Op, Fail, Ctx, Live, {float, []}, Dst, Vst);
+valfun_4({test,bs_get_binary2=Op,{f,Fail},Live,[Ctx,_,_,_],Dst}, Vst) ->
+    validate_bs_get(Op, Fail, Ctx, Live, binary, Dst, Vst);
+valfun_4({test,bs_get_utf8=Op,{f,Fail},Live,[Ctx,_],Dst}, Vst) ->
+    validate_bs_get(Op, Fail, Ctx, Live, {integer, []}, Dst, Vst);
+valfun_4({test,bs_get_utf16=Op,{f,Fail},Live,[Ctx,_],Dst}, Vst) ->
+    validate_bs_get(Op, Fail, Ctx, Live, {integer, []}, Dst, Vst);
+valfun_4({test,bs_get_utf32=Op,{f,Fail},Live,[Ctx,_],Dst}, Vst) ->
+    validate_bs_get(Op, Fail, Ctx, Live, {integer, []}, Dst, Vst);
 valfun_4({bs_save2,Ctx,SavePoint}, Vst) ->
     bsm_save(Ctx, SavePoint, Vst);
 valfun_4({bs_restore2,Ctx,SavePoint}, Vst) ->
     bsm_restore(Ctx, SavePoint, Vst);
+valfun_4({bs_get_position, Ctx, Dst, Live}, Vst0) ->
+    bsm_validate_context(Ctx, Vst0),
+    verify_live(Live, Vst0),
+    verify_y_init(Vst0),
+    Vst = prune_x_regs(Live, Vst0),
+    create_term(ms_position, bs_get_position, [Ctx], Dst, Vst, Vst0);
+valfun_4({bs_set_position, Ctx, Pos}, Vst) ->
+    bsm_validate_context(Ctx, Vst),
+    assert_type(ms_position, Pos, Vst),
+    Vst;
 
 %% Other test instructions.
-valfun_4({test,is_float,{f,Lbl},[Float]}, Vst) ->
-    assert_term(Float, Vst),
-    set_type({float,[]}, Float, branch_state(Lbl, Vst));
-valfun_4({test,is_tuple,{f,Lbl},[Tuple]}, Vst) ->
-    Type0 = get_term_type(Tuple, Vst),
-    Type = upgrade_tuple_type({tuple,[0]}, Type0),
-    set_type(Type, Tuple, branch_state(Lbl, Vst));
-valfun_4({test,is_nonempty_list,{f,Lbl},[Cons]}, Vst) ->
-    assert_term(Cons, Vst),
-    set_type(cons, Cons, branch_state(Lbl, Vst));
-valfun_4({test,test_arity,{f,Lbl},[Tuple,Sz]}, Vst) when is_integer(Sz) ->
-    assert_type(tuple, Tuple, Vst),
-    set_type_reg({tuple,Sz}, Tuple, branch_state(Lbl, Vst));
-valfun_4({test,is_tagged_tuple,{f,Lbl},[Src,Sz,_Atom]}, Vst) ->
-    validate_src([Src], Vst),
-    set_type_reg({tuple, Sz}, Src, branch_state(Lbl, Vst));
 valfun_4({test,has_map_fields,{f,Lbl},Src,{list,List}}, Vst) ->
     assert_type(map, Src, Vst),
     assert_unique_map_keys(List),
-    branch_state(Lbl, Vst);
-valfun_4({test,is_map,{f,Lbl},[Src]}, Vst0) ->
-    Vst = branch_state(Lbl, Vst0),
-    case Src of
-	{Tag,_} when Tag =:= x; Tag =:= y ->
-	    set_type_reg(map, Src, Vst);
-	{literal,Map} when is_map(Map) ->
-	    Vst;
-	_ ->
-	    kill_state(Vst)
-    end;
+    branch(Lbl, Vst, fun(V) -> V end);
+valfun_4({test,is_atom,{f,Lbl},[Src]}, Vst) ->
+    type_test(Lbl, {atom,[]}, Src, Vst);
+valfun_4({test,is_binary,{f,Lbl},[Src]}, Vst) ->
+    type_test(Lbl, binary, Src, Vst);
+valfun_4({test,is_bitstr,{f,Lbl},[Src]}, Vst) ->
+    type_test(Lbl, binary, Src, Vst);
+valfun_4({test,is_boolean,{f,Lbl},[Src]}, Vst) ->
+    type_test(Lbl, bool, Src, Vst);
+valfun_4({test,is_float,{f,Lbl},[Src]}, Vst) ->
+    type_test(Lbl, {float,[]}, Src, Vst);
+valfun_4({test,is_tuple,{f,Lbl},[Src]}, Vst) ->
+    type_test(Lbl, {tuple,[0],#{}}, Src, Vst);
+valfun_4({test,is_integer,{f,Lbl},[Src]}, Vst) ->
+    type_test(Lbl, {integer,[]}, Src, Vst);
+valfun_4({test,is_nonempty_list,{f,Lbl},[Src]}, Vst) ->
+    type_test(Lbl, cons, Src, Vst);
+valfun_4({test,is_number,{f,Lbl},[Src]}, Vst) ->
+    type_test(Lbl, number, Src, Vst);
+valfun_4({test,is_list,{f,Lbl},[Src]}, Vst) ->
+    type_test(Lbl, list, Src, Vst);
+valfun_4({test,is_map,{f,Lbl},[Src]}, Vst) ->
+    type_test(Lbl, map, Src, Vst);
+valfun_4({test,is_nil,{f,Lbl},[Src]}, Vst) ->
+    %% is_nil is an exact check against the 'nil' value, and should not be
+    %% treated as a simple type test.
+    assert_term(Src, Vst),
+    branch(Lbl, Vst,
+           fun(FailVst) ->
+                   update_ne_types(Src, nil, FailVst)
+           end,
+           fun(SuccVst) ->
+                   update_eq_types(Src, nil, SuccVst)
+           end);
+valfun_4({test,test_arity,{f,Lbl},[Tuple,Sz]}, Vst) when is_integer(Sz) ->
+    assert_type(tuple, Tuple, Vst),
+    Type = {tuple, Sz, #{}},
+    type_test(Lbl, Type, Tuple, Vst);
+valfun_4({test,is_tagged_tuple,{f,Lbl},[Src,Sz,Atom]}, Vst) ->
+    assert_term(Src, Vst),
+    Type = {tuple, Sz, #{ {integer,1} => Atom }},
+    type_test(Lbl, Type, Src, Vst);
+valfun_4({test,is_eq_exact,{f,Lbl},[Src,Val]=Ss}, Vst) ->
+    validate_src(Ss, Vst),
+    branch(Lbl, Vst,
+           fun(FailVst) ->
+                   update_ne_types(Src, Val, FailVst)
+           end,
+           fun(SuccVst) ->
+                   update_eq_types(Src, Val, SuccVst)
+           end);
+valfun_4({test,is_ne_exact,{f,Lbl},[Src,Val]=Ss}, Vst) ->
+    validate_src(Ss, Vst),
+    branch(Lbl, Vst,
+           fun(FailVst) ->
+                   update_eq_types(Src, Val, FailVst)
+           end,
+           fun(SuccVst) ->
+                   update_ne_types(Src, Val, SuccVst)
+           end);
 valfun_4({test,_Op,{f,Lbl},Src}, Vst) ->
+    %% is_pid, is_reference, et cetera.
     validate_src(Src, Vst),
-    branch_state(Lbl, Vst);
+    branch(Lbl, Vst, fun(V) -> V end);
 valfun_4({bs_add,{f,Fail},[A,B,_],Dst}, Vst) ->
     assert_term(A, Vst),
     assert_term(B, Vst),
-    set_type_reg({integer,[]}, Dst, branch_state(Fail, Vst));
+    branch(Fail, Vst,
+           fun(SuccVst) ->
+                   create_term({integer,[]}, bs_add, [A, B], Dst, SuccVst)
+           end);
 valfun_4({bs_utf8_size,{f,Fail},A,Dst}, Vst) ->
     assert_term(A, Vst),
-    set_type_reg({integer,[]}, Dst, branch_state(Fail, Vst));
+    branch(Fail, Vst,
+           fun(SuccVst) ->
+                   create_term({integer,[]}, bs_utf8_size, [A], Dst, SuccVst)
+           end);
 valfun_4({bs_utf16_size,{f,Fail},A,Dst}, Vst) ->
     assert_term(A, Vst),
-    set_type_reg({integer,[]}, Dst, branch_state(Fail, Vst));
+    branch(Fail, Vst,
+           fun(SuccVst) ->
+                   create_term({integer,[]}, bs_utf16_size, [A], Dst, SuccVst)
+           end);
 valfun_4({bs_init2,{f,Fail},Sz,Heap,Live,_,Dst}, Vst0) ->
     verify_live(Live, Vst0),
     verify_y_init(Vst0),
@@ -746,10 +958,12 @@ valfun_4({bs_init2,{f,Fail},Sz,Heap,Live,_,Dst}, Vst0) ->
 	true ->
 	    assert_term(Sz, Vst0)
     end,
-    Vst1 = heap_alloc(Heap, Vst0),
-    Vst2 = branch_state(Fail, Vst1),
-    Vst = prune_x_regs(Live, Vst2),
-    set_type_reg(binary, Dst, Vst);
+    Vst = heap_alloc(Heap, Vst0),
+    branch(Fail, Vst,
+           fun(SuccVst0) ->
+                   SuccVst = prune_x_regs(Live, SuccVst0),
+                   create_term(binary, bs_init2, [], Dst, SuccVst, SuccVst0)
+           end);
 valfun_4({bs_init_bits,{f,Fail},Sz,Heap,Live,_,Dst}, Vst0) ->
     verify_live(Live, Vst0),
     verify_y_init(Vst0),
@@ -759,116 +973,203 @@ valfun_4({bs_init_bits,{f,Fail},Sz,Heap,Live,_,Dst}, Vst0) ->
 	true ->
 	    assert_term(Sz, Vst0)
     end,
-    Vst1 = heap_alloc(Heap, Vst0),
-    Vst2 = branch_state(Fail, Vst1),
-    Vst = prune_x_regs(Live, Vst2),
-    set_type_reg(binary, Dst, Vst);
+    Vst = heap_alloc(Heap, Vst0),
+    branch(Fail, Vst,
+           fun(SuccVst0) ->
+                   SuccVst = prune_x_regs(Live, SuccVst0),
+                   create_term(binary, bs_init_bits, [], Dst, SuccVst)
+           end);
 valfun_4({bs_append,{f,Fail},Bits,Heap,Live,_Unit,Bin,_Flags,Dst}, Vst0) ->
     verify_live(Live, Vst0),
     verify_y_init(Vst0),
     assert_term(Bits, Vst0),
     assert_term(Bin, Vst0),
-    Vst1 = heap_alloc(Heap, Vst0),
-    Vst2 = branch_state(Fail, Vst1),
-    Vst = prune_x_regs(Live, Vst2),
-    set_type_reg(binary, Dst, Vst);
-valfun_4({bs_private_append,{f,Fail},Bits,_Unit,Bin,_Flags,Dst}, Vst0) ->
-    assert_term(Bits, Vst0),
-    assert_term(Bin, Vst0),
-    Vst = branch_state(Fail, Vst0),
-    set_type_reg(binary, Dst, Vst);
+    Vst = heap_alloc(Heap, Vst0),
+    branch(Fail, Vst,
+           fun(SuccVst0) ->
+                   SuccVst = prune_x_regs(Live, SuccVst0),
+                   create_term(binary, bs_append, [Bin], Dst, SuccVst, SuccVst0)
+           end);
+valfun_4({bs_private_append,{f,Fail},Bits,_Unit,Bin,_Flags,Dst}, Vst) ->
+    assert_term(Bits, Vst),
+    assert_term(Bin, Vst),
+    branch(Fail, Vst,
+           fun(SuccVst) ->
+                   create_term(binary, bs_private_append, [Bin], Dst, SuccVst)
+           end);
 valfun_4({bs_put_string,Sz,_}, Vst) when is_integer(Sz) ->
     Vst;
 valfun_4({bs_put_binary,{f,Fail},Sz,_,_,Src}, Vst) ->
     assert_term(Sz, Vst),
     assert_term(Src, Vst),
-    branch_state(Fail, Vst);
+    branch(Fail, Vst,
+           fun(SuccVst) ->
+                   update_type(fun meet/2, binary, Src, SuccVst)
+           end);
 valfun_4({bs_put_float,{f,Fail},Sz,_,_,Src}, Vst) ->
     assert_term(Sz, Vst),
     assert_term(Src, Vst),
-    branch_state(Fail, Vst);
+    branch(Fail, Vst,
+           fun(SuccVst) ->
+                   update_type(fun meet/2, {float,[]}, Src, SuccVst)
+           end);
 valfun_4({bs_put_integer,{f,Fail},Sz,_,_,Src}, Vst) ->
     assert_term(Sz, Vst),
     assert_term(Src, Vst),
-    branch_state(Fail, Vst);
+    branch(Fail, Vst,
+           fun(SuccVst) ->
+                   update_type(fun meet/2, {integer,[]}, Src, SuccVst)
+           end);
 valfun_4({bs_put_utf8,{f,Fail},_,Src}, Vst) ->
     assert_term(Src, Vst),
-    branch_state(Fail, Vst);
+    branch(Fail, Vst,
+           fun(SuccVst) ->
+                   update_type(fun meet/2, {integer,[]}, Src, SuccVst)
+           end);
 valfun_4({bs_put_utf16,{f,Fail},_,Src}, Vst) ->
     assert_term(Src, Vst),
-    branch_state(Fail, Vst);
+    branch(Fail, Vst,
+           fun(SuccVst) ->
+                   update_type(fun meet/2, {integer,[]}, Src, SuccVst)
+           end);
 valfun_4({bs_put_utf32,{f,Fail},_,Src}, Vst) ->
     assert_term(Src, Vst),
-    branch_state(Fail, Vst);
+    branch(Fail, Vst,
+           fun(SuccVst) ->
+                   update_type(fun meet/2, {integer,[]}, Src, SuccVst)
+           end);
 %% Map instructions.
-valfun_4({put_map_assoc,{f,Fail},Src,Dst,Live,{list,List}}, Vst) ->
-    verify_put_map(Fail, Src, Dst, Live, List, Vst);
-valfun_4({put_map_exact,{f,Fail},Src,Dst,Live,{list,List}}, Vst) ->
-    verify_put_map(Fail, Src, Dst, Live, List, Vst);
+valfun_4({put_map_assoc=Op,{f,Fail},Src,Dst,Live,{list,List}}, Vst) ->
+    verify_put_map(Op, Fail, Src, Dst, Live, List, Vst);
+valfun_4({put_map_exact=Op,{f,Fail},Src,Dst,Live,{list,List}}, Vst) ->
+    verify_put_map(Op, Fail, Src, Dst, Live, List, Vst);
 valfun_4({get_map_elements,{f,Fail},Src,{list,List}}, Vst) ->
     verify_get_map(Fail, Src, List, Vst);
 valfun_4(_, _) ->
     error(unknown_instruction).
 
 verify_get_map(Fail, Src, List, Vst0) ->
+    assert_not_literal(Src),                    %OTP 22.
     assert_type(map, Src, Vst0),
-    Vst1 = foldl(fun(D, Vsti) ->
-                         case is_reg_defined(D,Vsti) of
-                             true -> set_type_reg(term,D,Vsti);
-                             false -> Vsti
-                         end
-                 end, Vst0, extract_map_vals(List)),
-    Vst2 = branch_state(Fail, Vst1),
-    Keys = extract_map_keys(List),
-    assert_unique_map_keys(Keys),
-    verify_get_map_pair(List, Src, Vst0, Vst2).
-
-extract_map_vals([_Key,Val|T]) ->
-    [Val|extract_map_vals(T)];
-extract_map_vals([]) -> [].
+
+    branch(Fail, Vst0,
+           fun(FailVst) ->
+                   clobber_map_vals(List, Src, FailVst)
+           end,
+           fun(SuccVst) ->
+                   Keys = extract_map_keys(List),
+                   assert_unique_map_keys(Keys),
+                   extract_map_vals(List, Src, SuccVst, SuccVst)
+           end).
+
+%% get_map_elements may leave its destinations in an inconsistent state when
+%% the fail label is taken. Consider the following:
+%%
+%%    {get_map_elements,{f,7},{x,1},{list,[{atom,a},{x,1},{atom,b},{x,2}]}}.
+%%
+%% If 'a' exists but not 'b', {x,1} is overwritten when we jump to {f,7}.
+clobber_map_vals([Key,Dst|T], Map, Vst0) ->
+    case is_reg_defined(Dst, Vst0) of
+        true ->
+            Vst = extract_term(term, {bif,map_get}, [Key, Map], Dst, Vst0),
+            clobber_map_vals(T, Map, Vst);
+        false ->
+            clobber_map_vals(T, Map, Vst0)
+    end;
+clobber_map_vals([], _Map, Vst) ->
+    Vst.
 
 extract_map_keys([Key,_Val|T]) ->
     [Key|extract_map_keys(T)];
 extract_map_keys([]) -> [].
 
-verify_get_map_pair([Src,Dst|Vs], Map, Vst0, Vsti0) ->
-    assert_term(Src, Vst0),
-    Vsti = set_type_reg(term, Map, Dst, Vsti0),
-    verify_get_map_pair(Vs, Map, Vst0, Vsti);
-verify_get_map_pair([], _Map, _Vst0, Vst) -> Vst.
+extract_map_vals([Key,Dst|Vs], Map, Vst0, Vsti0) ->
+    assert_term(Key, Vst0),
+    Vsti = extract_term(term, {bif,map_get}, [Key, Map], Dst, Vsti0),
+    extract_map_vals(Vs, Map, Vst0, Vsti);
+extract_map_vals([], _Map, _Vst0, Vst) ->
+    Vst.
 
-verify_put_map(Fail, Src, Dst, Live, List, Vst0) ->
+verify_put_map(Op, Fail, Src, Dst, Live, List, Vst0) ->
     assert_type(map, Src, Vst0),
     verify_live(Live, Vst0),
     verify_y_init(Vst0),
-    foreach(fun (Term) -> assert_term(Term, Vst0) end, List),
-    Vst1 = heap_alloc(0, Vst0),
-    Vst2 = branch_state(Fail, Vst1),
-    Vst = prune_x_regs(Live, Vst2),
-    Keys = extract_map_keys(List),
-    assert_unique_map_keys(Keys),
-    set_type_reg(map, Dst, Vst).
+    _ = [assert_term(Term, Vst0) || Term <- List],
+    Vst = heap_alloc(0, Vst0),
+
+    branch(Fail, Vst,
+           fun(SuccVst0) ->
+                   SuccVst = prune_x_regs(Live, SuccVst0),
+                   Keys = extract_map_keys(List),
+                   assert_unique_map_keys(Keys),
+                   create_term(map, Op, [Src], Dst, SuccVst, SuccVst0)
+           end).
+
+%%
+%% Common code for validating bs_start_match* instructions.
+%%
+
+validate_bs_start_match(Fail, Live, Type, Src, Dst, Vst) ->
+    verify_live(Live, Vst),
+    verify_y_init(Vst),
+
+    %% #ms{} can represent either a match context or a term, so we have to mark
+    %% the source as a term if it fails with a match context as an input. This
+    %% hack is only needed until we get proper union types.
+    branch(Fail, Vst,
+           fun(FailVst) ->
+                   case get_movable_term_type(Src, FailVst) of
+                       #ms{} -> override_type(term, Src, FailVst);
+                       _ -> FailVst
+                   end
+           end,
+           fun(SuccVst0) ->
+                   SuccVst1 = update_type(fun meet/2, binary,
+                                          Src, SuccVst0),
+                   SuccVst = prune_x_regs(Live, SuccVst1),
+                   extract_term(Type, bs_start_match, [Src], Dst,
+                                SuccVst, SuccVst0)
+           end).
 
 %%
 %% Common code for validating bs_get* instructions.
 %%
-validate_bs_get(Fail, Ctx, Live, Type, Dst, Vst0) ->
-    bsm_validate_context(Ctx, Vst0),
-    verify_live(Live, Vst0),
-    verify_y_init(Vst0),
-    Vst1 = prune_x_regs(Live, Vst0),
-    Vst = branch_state(Fail, Vst1),
-    set_type_reg(Type, Dst, Vst).
+validate_bs_get(Op, Fail, Ctx, Live, Type, Dst, Vst) ->
+    bsm_validate_context(Ctx, Vst),
+    verify_live(Live, Vst),
+    verify_y_init(Vst),
+
+    branch(Fail, Vst,
+           fun(SuccVst0) ->
+                   SuccVst = prune_x_regs(Live, SuccVst0),
+                   extract_term(Type, Op, [Ctx], Dst, SuccVst, SuccVst0)
+           end).
 
 %%
 %% Common code for validating bs_skip_utf* instructions.
 %%
-validate_bs_skip_utf(Fail, Ctx, Live, Vst0) ->
-    bsm_validate_context(Ctx, Vst0),
-    verify_y_init(Vst0),
-    verify_live(Live, Vst0),
-    Vst = prune_x_regs(Live, Vst0),
-    branch_state(Fail, Vst).
+validate_bs_skip_utf(Fail, Ctx, Live, Vst) ->
+    bsm_validate_context(Ctx, Vst),
+    verify_y_init(Vst),
+    verify_live(Live, Vst),
+
+    branch(Fail, Vst,
+           fun(SuccVst) ->
+                   prune_x_regs(Live, SuccVst)
+           end).
+
+%%
+%% Common code for is_$type instructions.
+%%
+type_test(Fail, Type, Reg, Vst) ->
+    assert_term(Reg, Vst),
+    branch(Fail, Vst,
+           fun(FailVst) ->
+                   update_type(fun subtract/2, Type, Reg, FailVst)
+           end,
+           fun(SuccVst) ->
+                   update_type(fun meet/2, Type, Reg, SuccVst)
+           end).
 
 %%
 %% Special state handling for setelement/3 and set_tuple_element/3 instructions.
@@ -885,34 +1186,29 @@ val_dsetel({set_tuple_element,_,_,_}, #vst{current=#st{setelem=false}}) ->
     error(illegal_context_for_set_tuple_element);
 val_dsetel({set_tuple_element,_,_,_}, #vst{current=#st{setelem=true}}=Vst) ->
     Vst;
+val_dsetel({get_tuple_element,_,_,_}, Vst) ->
+    Vst;
 val_dsetel({line,_}, Vst) ->
     Vst;
 val_dsetel(_, #vst{current=#st{setelem=true}=St}=Vst) ->
     Vst#vst{current=St#st{setelem=false}};
 val_dsetel(_, Vst) -> Vst.
 
-kill_state(#vst{current=#st{ct=[[Fail]|_]}}=Vst) when is_integer(Fail) ->
-    %% There is an active catch. Make sure that we merge the state into
-    %% the catch label before clearing it, so that that we can be sure
-    %% that the label gets a state.
-    kill_state_1(branch_state(Fail, Vst));
 kill_state(Vst) ->
-    kill_state_1(Vst).
-
-kill_state_1(Vst) ->
     Vst#vst{current=none}.
 
 %% A "plain" call.
 %%  The stackframe must be initialized.
 %%  The instruction will return to the instruction following the call.
-call(Name, Live, #vst{current=St}=Vst) ->
-    verify_call_args(Name, Live, Vst),
-    verify_y_init(Vst),
-    case return_type(Name, Vst) of
-	Type when Type =/= exception ->
-	    %% Type is never 'exception' because it has been handled earlier.
-	    Xs = gb_trees_from_list([{0,Type}]),
-	    Vst#vst{current=St#st{x=Xs,f=init_fregs()}}
+call(Name, Live, #vst{current=St0}=Vst0) ->
+    verify_call_args(Name, Live, Vst0),
+    verify_y_init(Vst0),
+    case call_return_type(Name, Vst0) of
+        Type when Type =/= exception ->
+            %% Type is never 'exception' because it has been handled earlier.
+            St = St0#st{f=init_fregs()},
+            Vst = prune_x_regs(0, Vst0#vst{current=St}),
+            create_term(Type, call, [], {x,0}, Vst)
     end.
 
 %% Tail call.
@@ -928,79 +1224,131 @@ tail_call(Name, Live, Vst0) ->
 verify_call_args(_, 0, #vst{}) ->
     ok;
 verify_call_args({f,Lbl}, Live, Vst) when is_integer(Live)->
-    verify_local_call(Lbl, Live, Vst);
+    verify_local_args(Live - 1, Lbl, #{}, Vst);
 verify_call_args(_, Live, Vst) when is_integer(Live)->
-    verify_call_args_1(Live, Vst);
+    verify_remote_args_1(Live - 1, Vst);
 verify_call_args(_, Live, _) ->
     error({bad_number_of_live_regs,Live}).
 
-verify_call_args_1(0, _) -> ok;
-verify_call_args_1(N, Vst) ->
-    X = N - 1,
-    get_term_type({x,X}, Vst),
-    verify_call_args_1(X, Vst).
-
-verify_local_call(Lbl, Live, Vst) ->
-    case all_ms_in_x_regs(Live, Vst) of
-	[{R,Ctx}] ->
-	    %% Verify that there is a suitable bs_start_match2 instruction.
-	    verify_call_match_context(Lbl, R, Vst),
-
-	    %% Since the callee has consumed the match context,
-	    %% there must be no additional copies in Y registers.
-	    #ms{id=Id} = Ctx,
-	    case ms_in_y_regs(Id, Vst) of
-		[] ->
-		    ok;
-		[_|_]=Ys ->
-		    error({multiple_match_contexts,[R|Ys]})
-	    end;
-	[_,_|_]=Xs0 ->
-	    Xs = [R || {R,_} <- Xs0],
-	    error({multiple_match_contexts,Xs});
-	[] ->
-	    ok
+verify_remote_args_1(-1, _) ->
+    ok;
+verify_remote_args_1(X, Vst) ->
+    assert_durable_term({x, X}, Vst),
+    verify_remote_args_1(X - 1, Vst).
+
+verify_local_args(-1, _Lbl, _CtxIds, _Vst) ->
+    ok;
+verify_local_args(X, Lbl, CtxIds, Vst) ->
+    Reg = {x, X},
+    assert_not_fragile(Reg, Vst),
+    case get_movable_term_type(Reg, Vst) of
+        #ms{id=Id}=Type ->
+            case CtxIds of
+                #{ Id := Other } ->
+                    error({multiple_match_contexts, [Reg, Other]});
+                #{} ->
+                    verify_arg_type(Lbl, Reg, Type, Vst),
+                    verify_local_args(X - 1, Lbl, CtxIds#{ Id => Reg }, Vst)
+            end;
+        Type ->
+            verify_arg_type(Lbl, Reg, Type, Vst),
+            verify_local_args(X - 1, Lbl, CtxIds, Vst)
     end.
 
-all_ms_in_x_regs(0, _Vst) ->
-    [];
-all_ms_in_x_regs(Live0, Vst) ->
-    Live = Live0 - 1,
-    R = {x,Live},
-    case get_move_term_type(R, Vst) of
-	#ms{}=M ->
-	    [{R,M}|all_ms_in_x_regs(Live, Vst)];
-	_ ->
-	    all_ms_in_x_regs(Live, Vst)
+%% Verifies that the given argument narrows to what the function expects.
+verify_arg_type(Lbl, Reg, #ms{}, #vst{ft=Ft}) ->
+    %% Match contexts require explicit support, and may not be passed to a
+    %% function that accepts arbitrary terms.
+    case gb_trees:lookup({Lbl, Reg}, Ft) of
+        {value, #ms{}} -> ok;
+        _ -> error(no_bs_start_match2)
+    end;
+verify_arg_type(Lbl, Reg, GivenType, #vst{ft=Ft}) ->
+    case gb_trees:lookup({Lbl, Reg}, Ft) of
+        {value, #ms{}} ->
+            %% Functions that accept match contexts also accept all other
+            %% terms. This will change once we support union types.
+            ok;
+        {value, RequiredType} ->
+            case vat_1(GivenType, RequiredType) of
+                true -> ok;
+                false -> error({bad_arg_type, Reg, GivenType, RequiredType})
+            end;
+        none ->
+            ok
     end.
 
-ms_in_y_regs(Id, #vst{current=#st{y=Ys0}}) ->
-    Ys = gb_trees:to_list(Ys0),
-    [{y,Y} || {Y,#ms{id=OtherId}} <- Ys, OtherId =:= Id].
+%% Checks whether the Given argument is compatible with the Required one. This
+%% is essentially a relaxed version of 'meet(Given, Req) =:= Given', where we
+%% accept that the Given value has the right type but not necessarily the exact
+%% same value; if {atom,gurka} is required, we'll consider {atom,[]} valid.
+%%
+%% This will catch all problems that could crash the emulator, like passing a
+%% 1-tuple when the callee expects a 3-tuple, but some value errors might slip
+%% through.
+vat_1(Same, Same) -> true;
+vat_1({atom,A}, {atom,B}) -> A =:= B orelse is_list(A) orelse is_list(B);
+vat_1({atom,A}, bool) -> is_boolean(A) orelse is_list(A);
+vat_1(bool, {atom,B}) -> is_boolean(B) orelse is_list(B);
+vat_1(cons, list) -> true;
+vat_1({float,A}, {float,B}) -> A =:= B orelse is_list(A) orelse is_list(B);
+vat_1({float,_}, number) -> true;
+vat_1({integer,A}, {integer,B}) -> A =:= B orelse is_list(A) orelse is_list(B);
+vat_1({integer,_}, number) -> true;
+vat_1(_, {literal,_}) -> false;
+vat_1({literal,_}=Lit, Required) -> vat_1(get_literal_type(Lit), Required);
+vat_1(nil, list) -> true;
+vat_1({tuple,SzA,EsA}, {tuple,SzB,EsB}) ->
+    if
+        is_list(SzB) ->
+            tuple_sz(SzA) >= tuple_sz(SzB) andalso vat_elements(EsA, EsB);
+        SzA =:= SzB ->
+            vat_elements(EsA, EsB);
+        SzA =/= SzB ->
+            false
+    end;
+vat_1(_, _) -> false.
 
-verify_call_match_context(Lbl, Ctx, #vst{ft=Ft}) ->
-    case gb_trees:lookup(Lbl, Ft) of
-	none ->
-	    error(no_bs_start_match2);
-	{value,[{test,bs_start_match2,_,_,[Ctx,_],Ctx}|_]} ->
-	    ok;
-	{value,[{test,bs_start_match2,_,_,_,_}=I|_]} ->
-	    error({unsuitable_bs_start_match2,I})
-    end.
+vat_elements(EsA, EsB) ->
+    maps:fold(fun(Key, Req, Acc) ->
+                      case EsA of
+                          #{ Key := Given } -> Acc andalso vat_1(Given, Req);
+                          #{} -> false
+                      end
+              end, true, EsB).
 
-allocate(Zero, Stk, Heap, Live, #vst{current=#st{numy=none}}=Vst0) ->
+allocate(Tag, Stk, Heap, Live, #vst{current=#st{numy=none}=St}=Vst0) ->
     verify_live(Live, Vst0),
-    Vst = #vst{current=St} = prune_x_regs(Live, Vst0),
-    Ys = init_regs(Stk, case Zero of 
-			    true -> initialized;
-			    false -> uninitialized
-			end),
-    heap_alloc(Heap, Vst#vst{current=St#st{y=Ys,numy=Stk}});
+    Vst1 = Vst0#vst{current=St#st{numy=Stk}},
+    Vst2 = prune_x_regs(Live, Vst1),
+    Vst = init_stack(Tag, Stk - 1, Vst2),
+    heap_alloc(Heap, Vst);
 allocate(_, _, _, _, #vst{current=#st{numy=Numy}}) ->
     error({existing_stack_frame,{size,Numy}}).
 
 deallocate(#vst{current=St}=Vst) ->
-    Vst#vst{current=St#st{y=init_regs(0, initialized),numy=none}}.
+    Vst#vst{current=St#st{ys=#{},numy=none}}.
+
+init_stack(_Tag, -1, Vst) ->
+    Vst;
+init_stack(Tag, Y, Vst) ->
+    init_stack(Tag, Y - 1, create_tag(Tag, allocate, [], {y,Y}, Vst)).
+
+trim_stack(From, To, Top, #st{ys=Ys0}=St) when From =:= Top ->
+    Ys = maps:filter(fun({y,Y}, _) -> Y < To end, Ys0),
+    St#st{numy=To,ys=Ys};
+trim_stack(From, To, Top, St0) ->
+    Src = {y, From},
+    Dst = {y, To},
+
+    #st{ys=Ys0} = St0,
+    Ys = case Ys0 of
+             #{ Src := Ref } -> Ys0#{ Dst => Ref };
+             #{} -> error({invalid_shift,Src,Dst})
+         end,
+    St = St0#st{ys=Ys},
+
+    trim_stack(From + 1, To + 1, Top, St).
 
 test_heap(Heap, Live, Vst0) ->
     verify_live(Live, Vst0),
@@ -1025,13 +1373,43 @@ heap_alloc_2([{floats,Floats}|T], St0) ->
     St = St0#st{hf=Floats},
     heap_alloc_2(T, St);
 heap_alloc_2([], St) -> St.
-    
-prune_x_regs(Live, #vst{current=#st{x=Xs0}=St0}=Vst) when is_integer(Live) ->
-    Xs1 = gb_trees:to_list(Xs0),
-    Xs = [P || {R,_}=P <- Xs1, R < Live],
-    St = St0#st{x=gb_trees:from_orddict(Xs)},
+
+prune_x_regs(Live, #vst{current=St0}=Vst) when is_integer(Live) ->
+    #st{fragile=Fragile0,xs=Xs0} = St0,
+    Fragile = cerl_sets:filter(fun({x,X}) ->
+                                       X < Live;
+                                  ({y,_}) ->
+                                       true
+                               end, Fragile0),
+    Xs = maps:filter(fun({x,X}, _) ->
+                             X < Live
+                     end, Xs0),
+    St = St0#st{fragile=Fragile,xs=Xs},
     Vst#vst{current=St}.
 
+%% All choices in a select_val list must be integers, floats, or atoms.
+%% All must be of the same type.
+assert_choices([{Tag,_},{f,_}|T]) ->
+    if
+        Tag =:= atom; Tag =:= float; Tag =:= integer ->
+            assert_choices_1(T, Tag);
+        true ->
+            error(bad_select_list)
+    end;
+assert_choices([]) -> ok.
+
+assert_choices_1([{Tag,_},{f,_}|T], Tag) ->
+    assert_choices_1(T, Tag);
+assert_choices_1([_,{f,_}|_], _Tag) ->
+    error(bad_select_list);
+assert_choices_1([], _Tag) -> ok.
+
+assert_arities([Arity,{f,_}|T]) when is_integer(Arity) ->
+    assert_arities(T);
+assert_arities([]) -> ok;
+assert_arities(_) -> error(bad_tuple_arity_list).
+
+
 %%%
 %%% Floating point checking.
 %%%
@@ -1051,8 +1429,8 @@ prune_x_regs(Live, #vst{current=#st{x=Xs0}=St0}=Vst) when is_integer(Live) ->
 %%%   fmove Src {fr,_}		%% Move INTO floating point register.
 %%%
 
-float_op(Src, Dst, Vst0) ->
-    foreach (fun(S) -> assert_freg_set(S, Vst0) end, Src),
+float_op(Ss, Dst, Vst0) ->
+    _ = [assert_freg_set(S, Vst0) || S <- Ss],
     assert_fls(cleared, Vst0),
     Vst = set_fls(cleared, Vst0),
     set_freg(Dst, Vst).
@@ -1070,8 +1448,7 @@ get_fls(#vst{current=#st{fls=Fls}}) when is_atom(Fls) -> Fls.
 
 init_fregs() -> 0.
 
-set_freg({fr,Fr}=Freg, #vst{current=#st{f=Fregs0}=St}=Vst)
-  when is_integer(Fr), 0 =< Fr ->
+set_freg({fr,Fr}=Freg, #vst{current=#st{f=Fregs0}=St}=Vst) ->
     check_limit(Freg),
     Bit = 1 bsl Fr,
     if
@@ -1107,7 +1484,10 @@ assert_unique_map_keys([]) ->
 assert_unique_map_keys([_]) ->
     ok;
 assert_unique_map_keys([_,_|_]=Ls) ->
-    Vs = [get_literal(L) || L <- Ls],
+    Vs = [begin
+              assert_literal(L),
+              L
+          end || L <- Ls],
     case length(Vs) =:= sets:size(sets:from_list(Vs)) of
 	true -> ok;
 	false -> error(keys_not_unique)
@@ -1117,6 +1497,8 @@ assert_unique_map_keys([_,_|_]=Ls) ->
 %%% New binary matching instructions.
 %%%
 
+bsm_match_state() ->
+    #ms{}.
 bsm_match_state(Slots) ->
     #ms{slots=Slots}.
 
@@ -1124,13 +1506,13 @@ bsm_validate_context(Reg, Vst) ->
     _ = bsm_get_context(Reg, Vst),
     ok.
 
-bsm_get_context({x,X}=Reg, #vst{current=#st{x=Xs}}=_Vst) when is_integer(X) ->
-    case gb_trees:lookup(X, Xs) of
-	{value,#ms{}=Ctx} -> Ctx;
-	{value,{fragile,#ms{}=Ctx}} -> Ctx;
-	_ -> error({no_bsm_context,Reg})
+bsm_get_context({Kind,_}=Reg, Vst) when Kind =:= x; Kind =:= y->
+    case get_movable_term_type(Reg, Vst) of
+        #ms{}=Ctx -> Ctx;
+        _ -> error({no_bsm_context,Reg})
     end;
-bsm_get_context(Reg, _) -> error({bad_source,Reg}).
+bsm_get_context(Reg, _) ->
+    error({bad_source,Reg}).
 
 bsm_save(Reg, {atom,start}, Vst) ->
     %% Save point refering to where the match started.
@@ -1141,7 +1523,7 @@ bsm_save(Reg, SavePoint, Vst) ->
     case bsm_get_context(Reg, Vst) of
 	#ms{valid=Bits,slots=Slots}=Ctxt0 when SavePoint < Slots ->
 	    Ctx = Ctxt0#ms{valid=Bits bor (1 bsl SavePoint),slots=Slots},
-	    set_type_reg(Ctx, Reg, Vst);
+	    override_type(Ctx, Reg, Vst);
 	_ -> error({illegal_save,SavePoint})
     end.
 
@@ -1160,104 +1542,369 @@ bsm_restore(Reg, SavePoint, Vst) ->
 	_ -> error({illegal_restore,SavePoint,range})
     end.
 
+validate_select_val(_Fail, _Choices, _Src, #vst{current=none}=Vst) ->
+    %% We've already branched on all of Src's possible values, so we know we
+    %% can't reach the fail label or any of the remaining choices.
+    Vst;
+validate_select_val(Fail, [Val,{f,L}|T], Src, Vst0) ->
+    Vst = branch(L, Vst0,
+                 fun(BranchVst) ->
+                         update_eq_types(Src, Val, BranchVst)
+                 end,
+                 fun(FailVst) ->
+                         update_ne_types(Src, Val, FailVst)
+                 end),
+    validate_select_val(Fail, T, Src, Vst);
+validate_select_val(Fail, [], _, Vst) ->
+    branch(Fail, Vst,
+           fun(SuccVst) ->
+                   %% The next instruction is never executed.
+                   kill_state(SuccVst)
+           end).
+
+validate_select_tuple_arity(_Fail, _Choices, _Src, #vst{current=none}=Vst) ->
+    %% We've already branched on all of Src's possible values, so we know we
+    %% can't reach the fail label or any of the remaining choices.
+    Vst;
+validate_select_tuple_arity(Fail, [Arity,{f,L}|T], Tuple, Vst0) ->
+    Type = {tuple, Arity, #{}},
+    Vst = branch(L, Vst0,
+                 fun(BranchVst) ->
+                         update_type(fun meet/2, Type, Tuple, BranchVst)
+                 end,
+                 fun(FailVst) ->
+                         update_type(fun subtract/2, Type, Tuple, FailVst)
+                 end),
+    validate_select_tuple_arity(Fail, T, Tuple, Vst);
+validate_select_tuple_arity(Fail, [], _, #vst{}=Vst) ->
+    branch(Fail, Vst,
+           fun(SuccVst) ->
+                   %% The next instruction is never executed.
+                   kill_state(SuccVst)
+           end).
+
+infer_types({Kind,_}=Reg, Vst) when Kind =:= x; Kind =:= y ->
+    infer_types(get_reg_vref(Reg, Vst), Vst);
+infer_types(#value_ref{}=Ref, #vst{current=#st{vs=Vs}}) ->
+    case Vs of
+        #{ Ref := Entry } -> infer_types_1(Entry);
+        #{} -> fun(_, S) -> S end
+    end;
+infer_types(_, #vst{}) ->
+    fun(_, S) -> S end.
+
+infer_types_1(#value{op={bif,'=:='},args=[LHS,RHS]}) ->
+    fun({atom,true}, S) ->
+            %% Either side might contain something worth inferring, so we need
+            %% to check them both.
+            Infer_L = infer_types(RHS, S),
+            Infer_R = infer_types(LHS, S),
+            Infer_R(RHS, Infer_L(LHS, S));
+       (_, S) -> S
+    end;
+infer_types_1(#value{op={bif,element},args=[{integer,Index}=Key,Tuple]}) ->
+    fun(Val, S) ->
+            Type = get_term_type(Val, S),
+            update_type(fun meet/2,{tuple,[Index],#{ Key => Type }}, Tuple, S)
+    end;
+infer_types_1(#value{op={bif,is_atom},args=[Src]}) ->
+    infer_type_test_bif({atom,[]}, Src);
+infer_types_1(#value{op={bif,is_boolean},args=[Src]}) ->
+    infer_type_test_bif(bool, Src);
+infer_types_1(#value{op={bif,is_binary},args=[Src]}) ->
+    infer_type_test_bif(binary, Src);
+infer_types_1(#value{op={bif,is_bitstring},args=[Src]}) ->
+    infer_type_test_bif(binary, Src);
+infer_types_1(#value{op={bif,is_float},args=[Src]}) ->
+    infer_type_test_bif(float, Src);
+infer_types_1(#value{op={bif,is_integer},args=[Src]}) ->
+    infer_type_test_bif({integer,{}}, Src);
+infer_types_1(#value{op={bif,is_list},args=[Src]}) ->
+    infer_type_test_bif(list, Src);
+infer_types_1(#value{op={bif,is_map},args=[Src]}) ->
+    infer_type_test_bif(map, Src);
+infer_types_1(#value{op={bif,is_number},args=[Src]}) ->
+    infer_type_test_bif(number, Src);
+infer_types_1(#value{op={bif,is_tuple},args=[Src]}) ->
+    infer_type_test_bif({tuple,[0],#{}}, Src);
+infer_types_1(#value{op={bif,tuple_size}, args=[Tuple]}) ->
+    fun({integer,Arity}, S) ->
+            update_type(fun meet/2, {tuple,Arity,#{}}, Tuple, S);
+       (_, S) -> S
+    end;
+infer_types_1(_) ->
+    fun(_, S) -> S end.
+
+infer_type_test_bif(Type, Src) ->
+    fun({atom,true}, S) ->
+            update_type(fun meet/2, Type, Src, S);
+       (_, S) ->
+            S
+    end.
+
 %%%
 %%% Keeping track of types.
 %%%
 
-set_type(Type, {x,_}=Reg, Vst) -> set_type_reg(Type, Reg, Vst);
-set_type(Type, {y,_}=Reg, Vst) -> set_type_y(Type, Reg, Vst);
-set_type(_, _, #vst{}=Vst) -> Vst.
-
-set_type_reg(Type, Src, Dst, Vst) ->
-    case get_term_type_1(Src, Vst) of
-        {fragile,_} ->
-            set_type_reg(make_fragile(Type), Dst, Vst);
+%% Assigns Src to Dst and marks them as aliasing each other.
+assign({y,_}=Src, {y,_}=Dst, Vst) ->
+    %% The stack trimming optimization may generate a move from an initialized
+    %% but unassigned Y register to another Y register.
+    case get_raw_type(Src, Vst) of
+        initialized -> create_tag(initialized, init, [], Dst, Vst);
+        _ -> assign_1(Src, Dst, Vst)
+    end;
+assign({Kind,_}=Src, Dst, Vst) when Kind =:= x; Kind =:= y ->
+    assign_1(Src, Dst, Vst);
+assign(Literal, Dst, Vst) ->
+    Type = get_literal_type(Literal),
+    create_term(Type, move, [Literal], Dst, Vst).
+
+%% Creates a special tag value that isn't a regular term, such as 'initialized'
+%% or 'catchtag'
+create_tag(Tag, _Op, _Ss, {y,_}=Dst, #vst{current=#st{ys=Ys0}=St0}=Vst) ->
+    case maps:get(Dst, Ys0, uninitialized) of
+        {catchtag,_}=Prev ->
+            error(Prev);
+        {trytag,_}=Prev ->
+            error(Prev);
         _ ->
-            set_type_reg(Type, Dst, Vst)
+            check_try_catch_tags(Tag, Dst, Vst),
+            Ys = Ys0#{ Dst => Tag },
+            St = St0#st{ys=Ys},
+            remove_fragility(Dst, Vst#vst{current=St})
+    end;
+create_tag(_Tag, _Op, _Ss, Dst, _Vst) ->
+    error({invalid_tag_register, Dst}).
+
+%% Wipes a special tag, leaving the register initialized but empty.
+kill_tag({y,_}=Reg, #vst{current=#st{ys=Ys0}=St0}=Vst) ->
+    _ = get_tag_type(Reg, Vst),                 %Assertion.
+    Ys = Ys0#{ Reg => initialized },
+    Vst#vst{current=St0#st{ys=Ys}}.
+
+%% Creates a completely new term with the given type.
+create_term(Type, Op, Ss0, Dst, Vst0) ->
+    create_term(Type, Op, Ss0, Dst, Vst0, Vst0).
+
+%% As create_term/4, but uses the incoming Vst for argument resolution in
+%% case x-regs have been pruned and the sources can no longer be found.
+create_term(Type, Op, Ss0, Dst, Vst0, OrigVst) ->
+    {Ref, Vst1} = new_value(Type, Op, resolve_args(Ss0, OrigVst), Vst0),
+    Vst = remove_fragility(Dst, Vst1),
+    set_reg_vref(Ref, Dst, Vst).
+
+%% Extracts a term from Ss, propagating fragility.
+extract_term(Type, Op, Ss0, Dst, Vst0) ->
+    extract_term(Type, Op, Ss0, Dst, Vst0, Vst0).
+
+%% As extract_term/4, but uses the incoming Vst for argument resolution in
+%% case x-regs have been pruned and the sources can no longer be found.
+extract_term(Type, Op, Ss0, Dst, Vst0, OrigVst) ->
+    {Ref, Vst1} = new_value(Type, Op, resolve_args(Ss0, OrigVst), Vst0),
+    Vst = propagate_fragility(Dst, Ss0, Vst1),
+    set_reg_vref(Ref, Dst, Vst).
+
+%% Translates instruction arguments into the argument() type, decoupling them
+%% from their registers, allowing us to infer their types after they've been
+%% clobbered or moved.
+resolve_args([{Kind,_}=Src | Args], Vst) when Kind =:= x; Kind =:= y ->
+    [get_reg_vref(Src, Vst) | resolve_args(Args, Vst)];
+resolve_args([Lit | Args], Vst) ->
+    assert_literal(Lit),
+    [Lit | resolve_args(Args, Vst)];
+resolve_args([], _Vst) ->
+    [].
+
+%% Overrides the type of Reg. This is ugly but a necessity for certain
+%% destructive operations.
+override_type(Type, Reg, Vst) ->
+    update_type(fun(_, T) -> T end, Type, Reg, Vst).
+
+%% This is used when linear code finds out more and more information about a
+%% type, so that the type gets more specialized.
+update_type(Merge, With, #value_ref{}=Ref, Vst) ->
+    %% If the old type can't be merged with the new one, the type information
+    %% is inconsistent and we know that some instructions will never be
+    %% executed at run-time. For example:
+    %%
+    %%   {test,is_list,Fail,[Reg]}.
+    %%   {test,is_tuple,Fail,[Reg]}.
+    %%   {test,test_arity,Fail,[Reg,5]}.
+    %%
+    %% Note that the test_arity instruction can never be reached, so we need to
+    %% kill the state to avoid raising an error when we encounter it.
+    %%
+    %% Simply returning `kill_state(Vst)` is unsafe however as we might be in
+    %% the middle of an instruction, and altering the rest of the validator
+    %% (eg. prune_x_regs/2) to no-op on dead states is prone to error.
+    %%
+    %% We therefore throw a 'type_conflict' error instead, which causes
+    %% validation to fail unless we're in a context where such errors can be
+    %% handled, such as in a branch handler.
+    Current = get_raw_type(Ref, Vst),
+    case Merge(Current, With) of
+        none -> throw({type_conflict, Current, With});
+        Type -> set_type(Type, Ref, Vst)
+    end;
+update_type(Merge, With, {Kind,_}=Reg, Vst) when Kind =:= x; Kind =:= y ->
+    update_type(Merge, With, get_reg_vref(Reg, Vst), Vst);
+update_type(Merge, With, Literal, Vst) ->
+    assert_literal(Literal),
+    %% Literals always retain their type, but we still need to bail on type
+    %% conflicts.
+    case Merge(Literal, With) of
+        none -> throw({type_conflict, Literal, With});
+        _Type -> Vst
     end.
 
-set_type_reg(Type, {x,_}=Reg, Vst) ->
-    set_type_x(Type, Reg, Vst);
-set_type_reg(Type, Reg, Vst) ->
-    set_type_y(Type, Reg, Vst).
-
-set_type_x(Type, {x,X}=Reg, #vst{current=#st{x=Xs0}=St}=Vst)
-  when is_integer(X), 0 =< X ->
-    check_limit(Reg),
-    Xs = case gb_trees:lookup(X, Xs0) of
-             none ->
-                 gb_trees:insert(X, Type, Xs0);
-             {value,{fragile,_}} ->
-                 gb_trees:update(X, make_fragile(Type), Xs0);
-             {value,_} ->
-                 gb_trees:update(X, Type, Xs0)
-         end,
-    Vst#vst{current=St#st{x=Xs}};
-set_type_x(Type, Reg, #vst{}) ->
-    error({invalid_store,Reg,Type}).
-
-set_type_y(Type, {y,Y}=Reg, #vst{current=#st{y=Ys0}=St}=Vst)
-  when is_integer(Y), 0 =< Y ->
-    check_limit(Reg),
-    Ys = case gb_trees:lookup(Y, Ys0) of
-	     none ->
-		 error({invalid_store,Reg,Type});
-	     {value,{catchtag,_}=Tag} ->
-		 error(Tag);
-	     {value,{trytag,_}=Tag} ->
-		 error(Tag);
-	     {value,_} ->
-		 gb_trees:update(Y, Type, Ys0)
-	 end,
-    check_try_catch_tags(Type, Y, Ys0),
-    Vst#vst{current=St#st{y=Ys}};
-set_type_y(Type, Reg, #vst{}) -> error({invalid_store,Reg,Type}).
-
-make_fragile({fragile,_}=Type) -> Type;
-make_fragile(Type) -> {fragile,Type}.
-
-set_catch_end({y,Y}, #vst{current=#st{y=Ys0}=St}=Vst) ->
-    Ys = gb_trees:update(Y, initialized, Ys0),
-    Vst#vst{current=St#st{y=Ys}}.
-
-check_try_catch_tags(Type, LastY, Ys) ->
-    case is_try_catch_tag(Type) of
-        false ->
-            ok;
-        true ->
-            %% Every catch or try/catch must use a lower Y register
-            %% number than any enclosing catch or try/catch. That will
-            %% ensure that when the stack is scanned when an
-            %% exception occurs, the innermost try/catch tag is found
-            %% first.
-            Bad = [{{y,Y},Tag} || {Y,Tag} <- gb_trees:to_list(Ys),
-                                  Y < LastY, is_try_catch_tag(Tag)],
-            case Bad of
-                [] ->
-                    ok;
-                [_|_] ->
-                    error({bad_try_catch_nesting,{y,LastY},Bad})
-            end
+update_ne_types(LHS, RHS, Vst) ->
+    %% While updating types on equality is fairly straightforward, inequality
+    %% is a bit trickier since all we know is that the *value* of LHS differs
+    %% from RHS, so we can't blindly subtract their types.
+    %%
+    %% Consider `number =/= {integer,[]}`; all we know is that LHS isn't equal
+    %% to some *specific integer* of unknown value, and if we were to subtract
+    %% {integer,[]} we would erroneously infer that the new type is {float,[]}.
+    %%
+    %% Therefore, we only subtract when we know that RHS has a specific value.
+    RType = get_term_type(RHS, Vst),
+    case is_literal(RType) of
+        true -> update_type(fun subtract/2, RType, LHS, Vst);
+        false -> Vst
     end.
 
-is_try_catch_tag({catchtag,_}) -> true;
-is_try_catch_tag({trytag,_}) -> true;
-is_try_catch_tag(_) -> false.
+update_eq_types(LHS, RHS, Vst0) ->
+    %% Either side might contain something worth inferring, so we need
+    %% to check them both.
+    Infer_L = infer_types(RHS, Vst0),
+    Infer_R = infer_types(LHS, Vst0),
+    Vst1 = Infer_R(RHS, Infer_L(LHS, Vst0)),
 
-is_reg_defined({x,_}=Reg, Vst) -> is_type_defined_x(Reg, Vst);
-is_reg_defined({y,_}=Reg, Vst) -> is_type_defined_y(Reg, Vst);
-is_reg_defined(V, #vst{}) -> error({not_a_register, V}).
+    T1 = get_term_type(LHS, Vst1),
+    T2 = get_term_type(RHS, Vst1),
+
+    Vst = update_type(fun meet/2, T2, LHS, Vst1),
+    update_type(fun meet/2, T1, RHS, Vst).
+
+%% Helper functions for the above.
+
+assign_1(Src, Dst, Vst0) ->
+    assert_movable(Src, Vst0),
+    Vst = propagate_fragility(Dst, [Src], Vst0),
+    set_reg_vref(get_reg_vref(Src, Vst), Dst, Vst).
+
+set_reg_vref(Ref, {x,_}=Dst, Vst) ->
+    check_limit(Dst),
+    #vst{current=#st{xs=Xs0}=St0} = Vst,
+    St = St0#st{xs=Xs0#{ Dst => Ref }},
+    Vst#vst{current=St};
+set_reg_vref(Ref, {y,_}=Dst, #vst{current=#st{ys=Ys0}=St0} = Vst) ->
+    check_limit(Dst),
+    case Ys0 of
+        #{ Dst := {catchtag,_}=Tag } ->
+            error(Tag);
+        #{ Dst := {trytag,_}=Tag } ->
+            error(Tag);
+        #{ Dst := _ } ->
+            St = St0#st{ys=Ys0#{ Dst => Ref }},
+            Vst#vst{current=St};
+        #{} ->
+            %% Storing into a non-existent Y register means that we haven't set
+            %% up a (sufficiently large) stack.
+            error({invalid_store, Dst})
+    end.
+
+get_reg_vref({x,_}=Src, #vst{current=#st{xs=Xs}}) ->
+    check_limit(Src),
+    case Xs of
+        #{ Src := #value_ref{}=Ref } ->
+            Ref;
+        #{} ->
+            error({uninitialized_reg, Src})
+    end;
+get_reg_vref({y,_}=Src, #vst{current=#st{ys=Ys}}) ->
+    check_limit(Src),
+    case Ys of
+        #{ Src := #value_ref{}=Ref } ->
+            Ref;
+        #{ Src := initialized } ->
+            error({unassigned, Src});
+        #{ Src := Tag } when Tag =/= uninitialized ->
+            error(Tag);
+        #{} ->
+            error({uninitialized_reg, Src})
+    end.
+
+set_type(Type, #value_ref{}=Ref, #vst{current=#st{vs=Vs0}=St}=Vst) ->
+    case Vs0 of
+        #{ Ref := #value{}=Entry } ->
+            Vs = Vs0#{ Ref => Entry#value{type=Type} },
+            Vst#vst{current=St#st{vs=Vs}};
+        #{} ->
+            %% Dead references may happen during type inference and are not an
+            %% error in and of themselves. If a problem were to arise from this
+            %% it'll explode elsewhere.
+            Vst
+    end.
+
+new_value(Type, Op, Ss, #vst{current=#st{vs=Vs0}=St,ref_ctr=Counter}=Vst) ->
+    Ref = #value_ref{id=Counter},
+    Vs = Vs0#{ Ref => #value{op=Op,args=Ss,type=Type} },
 
-is_type_defined_x({x,X}, #vst{current=#st{x=Xs}}) ->
-    gb_trees:is_defined(X,Xs).
+    {Ref, Vst#vst{current=St#st{vs=Vs},ref_ctr=Counter+1}}.
 
-is_type_defined_y({y,Y}, #vst{current=#st{y=Ys}}) ->
-    gb_trees:is_defined(Y,Ys).
+kill_catch_tag(Reg, #vst{current=#st{ct=[Fail|Fails]}=St}=Vst0) ->
+    Vst = Vst0#vst{current=St#st{ct=Fails,fls=undefined}},
+    {_, Fail} = get_tag_type(Reg, Vst),         %Assertion.
+    kill_tag(Reg, Vst).
+
+check_try_catch_tags(Type, {y,N}=Reg, Vst) ->
+    %% Every catch or try/catch must use a lower Y register number than any
+    %% enclosing catch or try/catch. That will ensure that when the stack is
+    %% scanned when an exception occurs, the innermost try/catch tag is found
+    %% first.
+    case is_try_catch_tag(Type) of
+        true ->
+            case collect_try_catch_tags(N - 1, Vst, []) of
+                [_|_]=Bad -> error({bad_try_catch_nesting, Reg, Bad});
+                [] -> ok
+            end;
+        false ->
+            ok
+    end.
+
+is_reg_defined({x,_}=Reg, #vst{current=#st{xs=Xs}}) -> is_map_key(Reg, Xs);
+is_reg_defined({y,_}=Reg, #vst{current=#st{ys=Ys}}) -> is_map_key(Reg, Ys);
+is_reg_defined(V, #vst{}) -> error({not_a_register, V}).
 
 assert_term(Src, Vst) ->
-    get_term_type(Src, Vst),
+    _ = get_term_type(Src, Vst),
+    ok.
+
+assert_movable(Src, Vst) ->
+    _ = get_movable_term_type(Src, Vst),
     ok.
 
+assert_literal(Src) ->
+    case is_literal(Src) of
+        true -> ok;
+        false -> error({literal_required,Src})
+    end.
+
+assert_not_literal(Src) ->
+    case is_literal(Src) of
+        true -> error({literal_not_allowed,Src});
+        false -> ok
+    end.
+
+is_literal(nil) -> true;
+is_literal({atom,A}) when is_atom(A) -> true;
+is_literal({float,F}) when is_float(F) -> true;
+is_literal({integer,I}) when is_integer(I) -> true;
+is_literal({literal,_L}) -> true;
+is_literal(_) -> false.
+
 %% The possible types.
 %%
 %% First non-term types:
@@ -1276,10 +1923,10 @@ assert_term(Src, Vst) ->
 %%			used by the catch instructions; NOT safe to use in other
 %%			instructions.
 %%
-%% exception		Can only be used as a type returned by return_type/2
-%%			(which gives the type of the value returned by a BIF).
-%%			Thus 'exception' is never stored as type descriptor
-%%			for a register.
+%% exception            Can only be used as a type returned by
+%%                      call_return_type/2 (which gives the type of the value
+%%                      returned by a call). Thus 'exception' is never stored
+%%                      as type descriptor for a register.
 %%
 %% #ms{}	        A match context for bit syntax matching. We do allow
 %%			it to moved/to from stack, but otherwise it must only
@@ -1290,17 +1937,22 @@ assert_term(Src, Vst) ->
 %%
 %% term			Any valid Erlang (but not of the special types above).
 %%
+%% binary               Binary or bitstring.
+%%
 %% bool			The atom 'true' or the atom 'false'.
 %%
 %% cons         	Cons cell: [_|_]
 %%
 %% nil			Empty list: []
 %%
-%% {tuple,[Sz]}		Tuple. An element has been accessed using
-%%              	element/2 or setelement/3 so that it is known that
-%%              	the type is a tuple of size at least Sz.
+%% list                 List: [] or [_|_]
 %%
-%% {tuple,Sz}		Tuple. A test_arity instruction has been seen
+%% {tuple,[Sz],Es}      Tuple. An element has been accessed using
+%%                      element/2 or setelement/3 so that it is known that
+%%                      the type is a tuple of size at least Sz. Es is a map
+%%                      containing known types by tuple index.
+%%
+%% {tuple,Sz,Es}	Tuple. A test_arity instruction has been seen
 %%           		so that it is known that the size is exactly Sz.
 %%
 %% {atom,[]}		Atom.
@@ -1316,35 +1968,214 @@ assert_term(Src, Vst) ->
 %%
 %% map			Map.
 %%
+%% none                 A conflict in types. There will be an exception at runtime.
 %%
-%%
-%% FRAGILITY
-%% ---------
-%%
-%% The loop_rec/2 instruction may return a reference to a term that is
-%% not part of the root set. That term or any part of it must not be
-%% included in a garbage collection. Therefore, the term (or any part
-%% of it) must not be stored in an Y register.
-%%
-%% Such terms are wrapped in a {fragile,Type} tuple, where Type is one
-%% of the types described above.
 
-assert_type(WantedType, Term, Vst) ->
-    case get_term_type(Term, Vst) of
-        {fragile,Type} ->
-            assert_type(WantedType, Type);
-        Type ->
-            assert_type(WantedType, Type)
+%% join(Type1, Type2) -> Type
+%%  Return the most specific type possible.
+join(Same, Same) ->
+    Same;
+join(none, Other) ->
+    Other;
+join(Other, none) ->
+    Other;
+join({literal,_}=T1, T2) ->
+    join_literal(T1, T2);
+join(T1, {literal,_}=T2) ->
+    join_literal(T2, T1);
+join({tuple,Size,EsA}, {tuple,Size,EsB}) ->
+    Es = join_tuple_elements(tuple_sz(Size), EsA, EsB),
+    {tuple, Size, Es};
+join({tuple,A,EsA}, {tuple,B,EsB}) ->
+    Size = min(tuple_sz(A), tuple_sz(B)),
+    Es = join_tuple_elements(Size, EsA, EsB),
+    {tuple, [Size], Es};
+join({Type,A}, {Type,B})
+  when Type =:= atom; Type =:= integer; Type =:= float ->
+    if A =:= B -> {Type,A};
+       true -> {Type,[]}
+    end;
+join({Type,_}, number) 
+  when Type =:= integer; Type =:= float ->
+    number;
+join(number, {Type,_}) 
+  when Type =:= integer; Type =:= float ->
+    number;
+join({integer,_}, {float,_}) ->
+    number;
+join({float,_}, {integer,_}) ->
+    number;
+join(bool, {atom,A}) ->
+    join_bool(A);
+join({atom,A}, bool) ->
+    join_bool(A);
+join({atom,A}, {atom,B}) when is_boolean(A), is_boolean(B) ->
+    bool;
+join({atom,_}, {atom,_}) ->
+    {atom,[]};
+join(#ms{id=Id1,valid=B1,slots=Slots1},
+     #ms{id=Id2,valid=B2,slots=Slots2}) ->
+    Id = if
+             Id1 =:= Id2 -> Id1;
+             true -> make_ref()
+         end,
+    #ms{id=Id,valid=B1 band B2,slots=min(Slots1, Slots2)};
+join(T1, T2) when T1 =/= T2 ->
+    %% We've exhaused all other options, so the type must either be a list or
+    %% a 'term'.
+    join_list(T1, T2).
+
+join_tuple_elements(Limit, EsA, EsB) ->
+    Es0 = join_elements(EsA, EsB),
+    maps:filter(fun({integer,Index}, _Type) -> Index =< Limit end, Es0).
+
+join_elements(Es1, Es2) ->
+    Keys = if
+               map_size(Es1) =< map_size(Es2) -> maps:keys(Es1);
+               map_size(Es1) > map_size(Es2) -> maps:keys(Es2)
+           end,
+    join_elements_1(Keys, Es1, Es2, #{}).
+
+join_elements_1([Key | Keys], Es1, Es2, Acc0) ->
+    Type = case {Es1, Es2} of
+               {#{ Key := Same }, #{ Key := Same }} -> Same;
+               {#{ Key := Type1 }, #{ Key := Type2 }} -> join(Type1, Type2);
+               {#{}, #{}} -> term
+           end,
+    Acc = set_element_type(Key, Type, Acc0),
+    join_elements_1(Keys, Es1, Es2, Acc);
+join_elements_1([], _Es1, _Es2, Acc) ->
+    Acc.
+
+%% Joins types of literals; note that the left argument must either be a
+%% literal or exactly equal to the second argument.
+join_literal(Same, Same) ->
+    Same;
+join_literal({literal,_}=Lit, T) ->
+    join_literal(T, get_literal_type(Lit));
+join_literal(T1, T2) ->
+    %% We're done extracting the types, try merging them again.
+    join(T1, T2).
+
+join_list(nil, cons) -> list;
+join_list(nil, list) -> list;
+join_list(cons, list) -> list;
+join_list(T, nil) -> join_list(nil, T);
+join_list(T, cons) -> join_list(cons, T);
+join_list(_, _) ->
+    %% Not a list, so it must be a term.
+    term.
+
+join_bool([]) -> {atom,[]};
+join_bool(true) -> bool;
+join_bool(false) -> bool;
+join_bool(_) -> {atom,[]}.
+
+%% meet(Type1, Type2) -> Type
+%%  Return the meet of two types. The meet is a more specific type.
+%%  It will be 'none' if the types are in conflict.
+
+meet(Same, Same) ->
+    Same;
+meet(term, Other) ->
+    Other;
+meet(Other, term) ->
+    Other;
+meet(#ms{}, binary) ->
+    #ms{};
+meet(binary, #ms{}) ->
+    #ms{};
+meet({literal,_}, {literal,_}) ->
+    none;
+meet(T1, {literal,_}=T2) ->
+    meet(T2, T1);
+meet({literal,_}=T1, T2) ->
+    case meet(get_literal_type(T1), T2) of
+        none -> none;
+        _ -> T1
+    end;
+meet(T1, T2) ->
+    case {erlang:min(T1, T2),erlang:max(T1, T2)} of
+        {{atom,_}=A,{atom,[]}} -> A;
+        {bool,{atom,B}=Atom} when is_boolean(B) -> Atom;
+        {bool,{atom,[]}} -> bool;
+        {cons,list} -> cons;
+        {{float,_}=T,{float,[]}} -> T;
+        {{integer,_}=T,{integer,[]}} -> T;
+        {list,nil} -> nil;
+        {number,{integer,_}=T} -> T;
+        {number,{float,_}=T} -> T;
+        {{tuple,Size1,Es1},{tuple,Size2,Es2}} ->
+            Es = meet_elements(Es1, Es2),
+            case {Size1,Size2,Es} of
+                {_, _, none} ->
+                    none;
+                {[Sz1],[Sz2],_} ->
+                    Sz = erlang:max(Sz1, Sz2),
+                    assert_tuple_elements(Sz, Es),
+                    {tuple,[Sz],Es};
+                {Sz1,[Sz2],_} when Sz2 =< Sz1 ->
+                    assert_tuple_elements(Sz1, Es),
+                    {tuple,Sz1,Es};
+                {Sz,Sz,_} ->
+                    assert_tuple_elements(Sz, Es),
+                    {tuple,Sz,Es};
+                {_,_,_} ->
+                    none
+            end;
+        {_,_} -> none
     end.
 
+meet_elements(Es1, Es2) ->
+    Keys = maps:keys(Es1) ++ maps:keys(Es2),
+    meet_elements_1(Keys, Es1, Es2, #{}).
+
+meet_elements_1([Key | Keys], Es1, Es2, Acc) ->
+    case {Es1, Es2} of
+        {#{ Key := Type1 }, #{ Key := Type2 }} ->
+            case meet(Type1, Type2) of
+                none -> none;
+                Type -> meet_elements_1(Keys, Es1, Es2, Acc#{ Key => Type })
+            end;
+        {#{ Key := Type1 }, _} ->
+            meet_elements_1(Keys, Es1, Es2, Acc#{ Key => Type1 });
+        {_, #{ Key := Type2 }} ->
+            meet_elements_1(Keys, Es1, Es2, Acc#{ Key => Type2 })
+    end;
+meet_elements_1([], _Es1, _Es2, Acc) ->
+    Acc.
+
+%% No tuple elements may have an index above the known size.
+assert_tuple_elements(Limit, Es) ->
+    true = maps:fold(fun({integer,Index}, _T, true) ->
+                             Index =< Limit
+                     end, true, Es).            %Assertion.
+
+%% subtract(Type1, Type2) -> Type
+%%  Subtract Type2 from Type2. Example:
+%%      subtract(list, nil) -> cons
+
+subtract(Same, Same) -> none;
+subtract(list, nil) -> cons;
+subtract(list, cons) -> nil;
+subtract(number, {integer,[]}) -> {float,[]};
+subtract(number, {float,[]}) -> {integer,[]};
+subtract(bool, {atom,false}) -> {atom, true};
+subtract(bool, {atom,true}) -> {atom, false};
+subtract(Type, _) -> Type.
+
+assert_type(WantedType, Term, Vst) ->
+    Type = get_term_type(Term, Vst),
+    assert_type(WantedType, Type).
+
 assert_type(Correct, Correct) -> ok;
 assert_type(float, {float,_}) -> ok;
-assert_type(tuple, {tuple,_}) -> ok;
+assert_type(tuple, {tuple,_,_}) -> ok;
 assert_type(tuple, {literal,Tuple}) when is_tuple(Tuple) -> ok;
-assert_type({tuple_element,I}, {tuple,[Sz]})
+assert_type({tuple_element,I}, {tuple,[Sz],_})
   when 1 =< I, I =< Sz ->
     ok;
-assert_type({tuple_element,I}, {tuple,Sz})
+assert_type({tuple_element,I}, {tuple,Sz,_})
   when is_integer(Sz), 1 =< I, I =< Sz ->
     ok;
 assert_type({tuple_element,I}, {literal,Lit}) when I =< tuple_size(Lit) ->
@@ -1354,141 +2185,297 @@ assert_type(cons, {literal,[_|_]}) ->
 assert_type(Needed, Actual) ->
     error({bad_type,{needed,Needed},{actual,Actual}}).
 
-%% upgrade_tuple_type(NewTupleType, OldType) -> TupleType.
-%%  upgrade_tuple_type/2 is used when linear code finds out more and
-%%  more information about a tuple type, so that the type gets more
-%%  specialized. If OldType is not a tuple type, the type information
-%%  is inconsistent, and we know that some instructions will never
-%%  be executed at run-time.
-
-upgrade_tuple_type(NewType, {fragile,OldType}) ->
-    make_fragile(upgrade_tuple_type_1(NewType, OldType));
-upgrade_tuple_type(NewType, OldType) ->
-    upgrade_tuple_type_1(NewType, OldType).
-
-upgrade_tuple_type_1({tuple,[Sz]}, {tuple,[OldSz]}=T) when Sz < OldSz ->
-    %% The old type has a higher value for the least tuple size.
-    T;
-upgrade_tuple_type_1({tuple,[Sz]}, {tuple,OldSz}=T)
-  when is_integer(Sz), is_integer(OldSz), Sz =< OldSz ->
-    %% The old size is exact, and the new size is smaller than the old size.
-    T;
-upgrade_tuple_type_1({tuple,_}=T, _) ->
-    %% The new type information is exact or has a higher value for
-    %% the least tuple size.
-    %%     Note that inconsistencies are also handled in this
-    %% clause, e.g. if the old type was an integer or a tuple accessed
-    %% outside its size; inconsistences will generally cause an exception
-    %% at run-time but are safe from our point of view.
-    T.
+get_element_type(Key, Src, Vst) ->
+    get_element_type_1(Key, get_term_type(Src, Vst)).
+
+get_element_type_1({integer,_}=Key, {tuple,_Sz,Es}) ->
+    case Es of
+        #{ Key := Type } -> Type;
+        #{} -> term
+    end;
+get_element_type_1(_Index, _Type) ->
+    term.
+
+set_element_type(_Key, none, Es) ->
+    Es;
+set_element_type(Key, term, Es) ->
+    maps:remove(Key, Es);
+set_element_type(Key, Type, Es) ->
+    Es#{ Key => Type }.
 
 get_tuple_size({integer,[]}) -> 0;
 get_tuple_size({integer,Sz}) -> Sz;
 get_tuple_size(_) -> 0.
 
 validate_src(Ss, Vst) when is_list(Ss) ->
-    foreach(fun(S) -> get_term_type(S, Vst) end, Ss).
+    _ = [assert_term(S, Vst) || S <- Ss],
+    ok.
 
-%% get_move_term_type(Src, ValidatorState) -> Type
+%% get_term_type(Src, ValidatorState) -> Type
 %%  Get the type of the source Src. The returned type Type will be
-%%  a standard Erlang type (no catch/try tags). Match contexts are OK.
+%%  a standard Erlang type (no catch/try tags or match contexts).
 
-get_move_term_type(Src, Vst) ->
-    case get_term_type_1(Src, Vst) of
-	initialized -> error({unassigned,Src});
-	{catchtag,_} -> error({catchtag,Src});
-	{trytag,_} -> error({trytag,Src});
-        tuple_in_progress -> error({tuple_in_progress,Src});
-	Type -> Type
+get_term_type(Src, Vst) ->
+    case get_movable_term_type(Src, Vst) of
+        #ms{} -> error({match_context,Src});
+        Type -> Type
     end.
 
-%% get_term_type(Src, ValidatorState) -> Type
+%% get_movable_term_type(Src, ValidatorState) -> Type
 %%  Get the type of the source Src. The returned type Type will be
-%%  a standard Erlang type (no catch/try tags or match contexts).
+%%  a standard Erlang type (no catch/try tags). Match contexts are OK.
 
-get_term_type(Src, Vst) ->
-    case get_move_term_type(Src, Vst) of
-	#ms{} -> error({match_context,Src});
-	Type -> Type
+get_movable_term_type(Src, Vst) ->
+    case get_raw_type(Src, Vst) of
+        initialized -> error({unassigned,Src});
+        uninitialized -> error({uninitialized_reg,Src});
+        {catchtag,_} -> error({catchtag,Src});
+        {trytag,_} -> error({trytag,Src});
+        tuple_in_progress -> error({tuple_in_progress,Src});
+        {literal,_}=Lit -> get_literal_type(Lit);
+        Type -> Type
     end.
 
-%% get_special_y_type(Src, ValidatorState) -> Type
-%%  Return the type for the Y register without doing any validity checks.
-
-get_special_y_type({y,_}=Reg, Vst) -> get_term_type_1(Reg, Vst);
-get_special_y_type(Src, _) -> error({source_not_y_reg,Src}).
-
-get_term_type_1(nil=T, _) -> T;
-get_term_type_1({atom,A}=T, _) when is_atom(A) -> T;
-get_term_type_1({float,F}=T, _) when is_float(F) -> T;
-get_term_type_1({integer,I}=T, _) when is_integer(I) -> T;
-get_term_type_1({literal,Map}, _) when is_map(Map) -> map;
-get_term_type_1({literal,_}=T, _) -> T;
-get_term_type_1({x,X}=Reg, #vst{current=#st{x=Xs}}) when is_integer(X) ->
-    case gb_trees:lookup(X, Xs) of
-	{value,Type} -> Type;
-	none -> error({uninitialized_reg,Reg})
+%% get_tag_type(Src, ValidatorState) -> Type
+%%  Return the tag type of a Y register, erroring out if it contains a term.
+
+get_tag_type({y,_}=Src, Vst) ->
+    case get_raw_type(Src, Vst) of
+        {catchtag, _}=Tag -> Tag;
+        {trytag, _}=Tag -> Tag;
+        uninitialized=Tag -> Tag;
+        initialized=Tag -> Tag;
+        Other -> error({invalid_tag,Src,Other})
     end;
-get_term_type_1({y,Y}=Reg, #vst{current=#st{y=Ys}}) when is_integer(Y) ->
-    case gb_trees:lookup(Y, Ys) of
- 	none -> error({uninitialized_reg,Reg});
-	{value,uninitialized} -> error({uninitialized_reg,Reg});
-	{value,Type} -> Type
+get_tag_type(Src, _) ->
+    error({invalid_tag_register,Src}).
+
+%% get_raw_type(Src, ValidatorState) -> Type
+%%  Return the type of a register without doing any validity checks or
+%%  conversions.
+get_raw_type({x,X}=Src, #vst{current=#st{xs=Xs}}=Vst) when is_integer(X) ->
+    check_limit(Src),
+    case Xs of
+        #{ Src := #value_ref{}=Ref } -> get_raw_type(Ref, Vst);
+        #{} -> uninitialized
     end;
-get_term_type_1(Src, _) -> error({bad_source,Src}).
-
+get_raw_type({y,Y}=Src, #vst{current=#st{ys=Ys}}=Vst) when is_integer(Y) ->
+    check_limit(Src),
+    case Ys of
+        #{ Src := #value_ref{}=Ref } -> get_raw_type(Ref, Vst);
+        #{ Src := Tag } -> Tag;
+        #{} -> uninitialized
+    end;
+get_raw_type(#value_ref{}=Ref, #vst{current=#st{vs=Vs}}) ->
+    case Vs of
+        #{ Ref := #value{type=Type} } -> Type;
+        #{} -> none
+    end;
+get_raw_type(Src, #vst{}) ->
+    get_literal_type(Src).
+
+get_literal_type(nil=T) -> T;
+get_literal_type({atom,A}=T) when is_atom(A) -> T;
+get_literal_type({float,F}=T) when is_float(F) -> T;
+get_literal_type({integer,I}=T) when is_integer(I) -> T;
+get_literal_type({literal,[_|_]}) -> cons;
+get_literal_type({literal,Bitstring}) when is_bitstring(Bitstring) -> binary;
+get_literal_type({literal,Map}) when is_map(Map) -> map;
+get_literal_type({literal,Tuple}) when is_tuple(Tuple) -> glt_1(Tuple);
+get_literal_type({literal,_}) -> term;
+get_literal_type(T) -> error({not_literal,T}).
+
+glt_1([]) -> nil;
+glt_1(A) when is_atom(A) -> {atom, A};
+glt_1(F) when is_float(F) -> {float, F};
+glt_1(I) when is_integer(I) -> {integer, I};
+glt_1(T) when is_tuple(T) ->
+    {Es,_} = foldl(fun(Val, {Es0, Index}) ->
+                           Type = glt_1(Val),
+                           Es = set_element_type({integer,Index}, Type, Es0),
+                           {Es, Index + 1}
+                   end, {#{}, 1}, tuple_to_list(T)),
+    {tuple, tuple_size(T), Es};
+glt_1(L) ->
+    {literal, L}.
 
-%% get_literal(Src) -> literal_value().
-get_literal(nil) -> [];
-get_literal({atom,A}) when is_atom(A) -> A;
-get_literal({float,F}) when is_float(F) -> F;
-get_literal({integer,I}) when is_integer(I) -> I;
-get_literal({literal,L}) -> L;
-get_literal(T) -> error({not_literal,T}).
+%%%
+%%% Branch tracking
+%%%
 
+%% Forks the execution flow, with the provided funs returning the new state of
+%% their respective branch; the "fail" fun returns the state where the branch
+%% is taken, and the "success" fun returns the state where it's not.
+%%
+%% If either path is known not to be taken at runtime (eg. due to a type
+%% conflict), it will simply be discarded.
+-spec branch(Lbl :: label(),
+             Original :: #vst{},
+             FailFun :: BranchFun,
+             SuccFun :: BranchFun) -> #vst{} when
+     BranchFun :: fun((#vst{}) -> #vst{}).
+branch(Lbl, Vst0, FailFun, SuccFun) ->
+    #vst{current=St0} = Vst0,
+    try FailFun(Vst0) of
+        Vst1 ->
+            Vst2 = branch_state(Lbl, Vst1),
+            Vst = Vst2#vst{current=St0},
+            try SuccFun(Vst) of
+                V -> V
+            catch
+                {type_conflict, _, _} ->
+                    %% The instruction is guaranteed to fail; kill the state.
+                    kill_state(Vst)
+            end
+    catch
+        {type_conflict, _, _} ->
+            %% This instruction is guaranteed not to fail, so we run the
+            %% success branch *without* catching type conflicts to avoid hiding
+            %% errors in the validator itself; one of the branches must
+            %% succeed.
+            SuccFun(Vst0)
+    end.
 
-branch_arities([], _, #vst{}=Vst) -> Vst;
-branch_arities([Sz,{f,L}|T], Tuple, #vst{current=St}=Vst0) 
-  when is_integer(Sz) ->
-    Vst1 = set_type_reg({tuple,Sz}, Tuple, Vst0),
-    Vst = branch_state(L, Vst1),
-    branch_arities(T, Tuple, Vst#vst{current=St}).
+%% A shorthand version of branch/4 for when the state is only altered on
+%% success.
+branch(Fail, Vst, SuccFun) ->
+    branch(Fail, Vst, fun(V) -> V end, SuccFun).
 
+%% Directly branches off the state. This is an "internal" operation that should
+%% be used sparingly.
 branch_state(0, #vst{}=Vst) ->
-    %% If the instruction fails, the stack may be scanned
-    %% looking for a catch tag. Therefore the Y registers
-    %% must be initialized at this point.
+    %% If the instruction fails, the stack may be scanned looking for a catch
+    %% tag. Therefore the Y registers must be initialized at this point.
     verify_y_init(Vst),
     Vst;
-branch_state(L, #vst{current=St,branched=B}=Vst) ->
-    Vst#vst{
-      branched=case gb_trees:is_defined(L, B) of
-		   false ->
-		       gb_trees:insert(L, St, B);
-		   true ->
-		       MergedSt = merge_states(L, St, B),
-		       gb_trees:update(L, MergedSt, B)
-	       end}.
-
-%% merge_states/3 is used when there are more than one way to arrive
-%% at this point, and the type states for the different paths has
-%% to be merged. The type states are downgraded to the least common
-%% subset for the subsequent code.
-
-merge_states(L, St, Branched) when L =/= 0 ->
+branch_state(L, #vst{current=St,branched=B,ref_ctr=Counter0}=Vst) ->
+    case gb_trees:is_defined(L, B) of
+        true ->
+            {MergedSt, Counter} = merge_states(L, St, B, Counter0),
+            Branched = gb_trees:update(L, MergedSt, B),
+            Vst#vst{branched=Branched,ref_ctr=Counter};
+        false ->
+            Vst#vst{branched=gb_trees:insert(L, St, B)}
+    end.
+
+%% merge_states/3 is used when there's more than one way to arrive at a
+%% certain point, requiring the states to be merged down to the least
+%% common subset for the subsequent code.
+
+merge_states(L, St, Branched, Counter) when L =/= 0 ->
     case gb_trees:lookup(L, Branched) of
-	none -> St;
-	{value,OtherSt} when St =:= none -> OtherSt;
-	{value,OtherSt} -> merge_states_1(St, OtherSt)
+        none ->
+            {St, Counter};
+        {value,OtherSt} when St =:= none ->
+            {OtherSt, Counter};
+        {value,OtherSt} ->
+             merge_states_1(St, OtherSt, Counter)
     end.
 
-merge_states_1(#st{x=Xs0,y=Ys0,numy=NumY0,h=H0,ct=Ct0},
-	       #st{x=Xs1,y=Ys1,numy=NumY1,h=H1,ct=Ct1}) ->
-    NumY = merge_stk(NumY0, NumY1),
-    Xs = merge_regs(Xs0, Xs1),
-    Ys = merge_y_regs(Ys0, Ys1),
-    Ct = merge_ct(Ct0, Ct1),
-    #st{x=Xs,y=Ys,numy=NumY,h=min(H0, H1),ct=Ct}.
+merge_states_1(#st{xs=XsA,ys=YsA,vs=VsA,fragile=FragA,numy=NumYA,h=HA,ct=CtA},
+               #st{xs=XsB,ys=YsB,vs=VsB,fragile=FragB,numy=NumYB,h=HB,ct=CtB},
+               Counter0) ->
+    %% When merging registers we drop all registers that aren't defined in both
+    %% states, and resolve conflicts by creating new values (similar to phi
+    %% nodes in SSA).
+    %%
+    %% While doing this we build a "merge map" detailing which values need to
+    %% be kept and which new values need to be created to resolve conflicts.
+    %% This map is then used to create a new value database where the types of
+    %% all values have been joined.
+    {Xs, Merge0, Counter1} = merge_regs(XsA, XsB, #{}, Counter0),
+    {Ys, Merge, Counter} = merge_regs(YsA, YsB, Merge0, Counter1),
+    Vs = merge_values(Merge, VsA, VsB),
+
+    Fragile = merge_fragility(FragA, FragB),
+    NumY = merge_stk(NumYA, NumYB),
+    Ct = merge_ct(CtA, CtB),
+
+    St = #st{xs=Xs,ys=Ys,vs=Vs,fragile=Fragile,numy=NumY,h=min(HA, HB),ct=Ct},
+    {St, Counter}.
+
+%% Merges the contents of two register maps, returning the updated "merge map"
+%% and the new registers.
+merge_regs(RsA, RsB, Merge, Counter) ->
+    Keys = if
+               map_size(RsA) =< map_size(RsB) -> maps:keys(RsA);
+               map_size(RsA) > map_size(RsB) -> maps:keys(RsB)
+           end,
+    merge_regs_1(Keys, RsA, RsB, #{}, Merge, Counter).
+
+merge_regs_1([Reg | Keys], RsA, RsB, Regs, Merge0, Counter0) ->
+    case {RsA, RsB} of
+        {#{ Reg := #value_ref{}=RefA }, #{ Reg := #value_ref{}=RefB }} ->
+            {Ref, Merge, Counter} = merge_vrefs(RefA, RefB, Merge0, Counter0),
+            merge_regs_1(Keys, RsA, RsB, Regs#{ Reg => Ref }, Merge, Counter);
+        {#{ Reg := TagA }, #{ Reg := TagB }} ->
+            %% Tags describe the state of the register rather than the value it
+            %% contains, so if a register contains a tag in one state we have
+            %% to merge it as a tag regardless of whether the other state says
+            %% it's a value.
+            {y, _} = Reg,                       %Assertion.
+            merge_regs_1(Keys, RsA, RsB, Regs#{ Reg => merge_tags(TagA,TagB) },
+                         Merge0, Counter0);
+        {#{}, #{}} ->
+            merge_regs_1(Keys, RsA, RsB, Regs, Merge0, Counter0)
+    end;
+merge_regs_1([], _, _, Regs, Merge, Counter) ->
+    {Regs, Merge, Counter}.
+
+merge_tags(Same, Same) ->
+    Same;
+merge_tags(uninitialized, _) ->
+    uninitialized;
+merge_tags(_, uninitialized) ->
+    uninitialized;
+merge_tags({catchtag,T0}, {catchtag,T1}) ->
+    {catchtag, ordsets:from_list(T0 ++ T1)};
+merge_tags({trytag,T0}, {trytag,T1}) ->
+    {trytag, ordsets:from_list(T0 ++ T1)};
+merge_tags(_A, _B) ->
+    %% All other combinations leave the register initialized. Errors arising
+    %% from this will be caught later on.
+    initialized.
+
+merge_vrefs(Ref, Ref, Merge, Counter) ->
+    %% We have two (potentially) different versions of the same value, so we
+    %% should join their types into the same value.
+    {Ref, Merge#{ Ref => Ref }, Counter};
+merge_vrefs(RefA, RefB, Merge, Counter) ->
+    %% We have two different values, so we need to create a new value from
+    %% their joined type if we haven't already done so.
+    Key = {RefA, RefB},
+    case Merge of
+        #{ Key := Ref } ->
+            {Ref, Merge, Counter};
+        #{} ->
+            Ref = #value_ref{id=Counter},
+            {Ref, Merge#{ Key => Ref }, Counter + 1}
+    end.
+
+merge_values(Merge, VsA, VsB) ->
+    maps:fold(fun(Spec, New, Acc) ->
+                      merge_values_1(Spec, New, VsA, VsB, Acc)
+              end, #{}, Merge).
+
+merge_values_1(Same, Same, VsA, VsB, Acc) ->
+    %% We're merging different versions of the same value, so it's safe to
+    %% reuse old entries if the type's unchanged.
+    #value{type=TypeA}=EntryA = map_get(Same, VsA),
+    #value{type=TypeB}=EntryB = map_get(Same, VsB),
+    Entry = case join(TypeA, TypeB) of
+                TypeA -> EntryA;
+                TypeB -> EntryB;
+                JoinedType -> EntryA#value{type=JoinedType}
+            end,
+    Acc#{ Same => Entry };
+merge_values_1({RefA, RefB}, New, VsA, VsB, Acc) ->
+    #value{type=TypeA} = map_get(RefA, VsA),
+    #value{type=TypeB} = map_get(RefB, VsB),
+    Acc#{ New => #value{op=join,args=[],type=join(TypeA, TypeB)} }.
+
+merge_fragility(FragileA, FragileB) ->
+    cerl_sets:union(FragileA, FragileB).
 
 merge_stk(S, S) -> S;
 merge_stk(_, _) -> undecided.
@@ -1501,135 +2488,70 @@ merge_ct_1([C0|Ct0], [C1|Ct1]) ->
 merge_ct_1([], []) -> [];
 merge_ct_1(_, _) -> undecided.
 
-merge_regs(Rs0, Rs1) ->
-    Rs = merge_regs_1(gb_trees:to_list(Rs0), gb_trees:to_list(Rs1)),
-    gb_trees_from_list(Rs).
-
-merge_regs_1([Same|Rs1], [Same|Rs2]) ->
-    [Same|merge_regs_1(Rs1, Rs2)];
-merge_regs_1([{R1,_}|Rs1], [{R2,_}|_]=Rs2) when R1 < R2 ->
-    merge_regs_1(Rs1, Rs2);
-merge_regs_1([{R1,_}|_]=Rs1, [{R2,_}|Rs2]) when R1 > R2 ->
-    merge_regs_1(Rs1, Rs2);
-merge_regs_1([{R,Type1}|Rs1], [{R,Type2}|Rs2]) ->
-    [{R,merge_types(Type1, Type2)}|merge_regs_1(Rs1, Rs2)];
-merge_regs_1([], []) -> [];
-merge_regs_1([], [_|_]) -> [];
-merge_regs_1([_|_], []) -> [].
-
-merge_y_regs(Rs0, Rs1) ->
-    case {gb_trees:size(Rs0),gb_trees:size(Rs1)} of
-	{Sz0,Sz1} when Sz0 < Sz1 ->
-	    merge_y_regs_1(Sz0-1, Rs1, Rs0);
-	{_,Sz1} ->
-	    merge_y_regs_1(Sz1-1, Rs0, Rs1)
-    end.
+tuple_sz([Sz]) -> Sz;
+tuple_sz(Sz) -> Sz.
 
-merge_y_regs_1(Y, S, Regs0) when Y >= 0 ->
-    Type0 = gb_trees:get(Y, Regs0),
-    case gb_trees:get(Y, S) of
-	Type0 ->
-	    merge_y_regs_1(Y-1, S, Regs0);
-	Type1 ->
-	    Type = merge_types(Type0, Type1),
-	    Regs = gb_trees:update(Y, Type, Regs0),
-	    merge_y_regs_1(Y-1, S, Regs)
-    end;
-merge_y_regs_1(_, _, Regs) -> Regs.
+verify_y_init(#vst{current=#st{numy=NumY,ys=Ys}}=Vst) when is_integer(NumY) ->
+    HighestY = maps:fold(fun({y,Y}, _, Acc) -> max(Y, Acc) end, -1, Ys),
+    true = NumY > HighestY,                     %Assertion.
+    verify_y_init_1(NumY - 1, Vst),
+    ok;
+verify_y_init(#vst{current=#st{numy=undecided,ys=Ys}}=Vst) ->
+    HighestY = maps:fold(fun({y,Y}, _, Acc) -> max(Y, Acc) end, -1, Ys),
+    verify_y_init_1(HighestY, Vst);
+verify_y_init(#vst{}) ->
+    ok.
 
-%% merge_types(Type1, Type2) -> Type
-%%  Return the most specific type possible.
-%%  Note: Type1 must NOT be the same as Type2.
-merge_types({fragile,Same}=Type, Same) ->
-    Type;
-merge_types({fragile,T1}, T2) ->
-    make_fragile(merge_types(T1, T2));
-merge_types(Same, {fragile,Same}=Type) ->
-    Type;
-merge_types(T1, {fragile,T2}) ->
-    make_fragile(merge_types(T1, T2));
-merge_types(uninitialized=I, _) -> I;
-merge_types(_, uninitialized=I) -> I;
-merge_types(initialized=I, _) -> I;
-merge_types(_, initialized=I) -> I;
-merge_types({catchtag,T0},{catchtag,T1}) ->
-    {catchtag,ordsets:from_list(T0++T1)};
-merge_types({trytag,T0},{trytag,T1}) ->
-    {trytag,ordsets:from_list(T0++T1)};
-merge_types({tuple,A}, {tuple,B}) ->
-    {tuple,[min(tuple_sz(A), tuple_sz(B))]};
-merge_types({Type,A}, {Type,B}) 
-  when Type =:= atom; Type =:= integer; Type =:= float ->
-    if A =:= B -> {Type,A};
-       true -> {Type,[]}
-    end;
-merge_types({Type,_}, number) 
-  when Type =:= integer; Type =:= float ->
-    number;
-merge_types(number, {Type,_}) 
-  when Type =:= integer; Type =:= float ->
-    number;
-merge_types(bool, {atom,A}) ->
-    merge_bool(A);
-merge_types({atom,A}, bool) ->
-    merge_bool(A);
-merge_types(#ms{id=Id1,valid=B1,slots=Slots1},
-	    #ms{id=Id2,valid=B2,slots=Slots2}) ->
-    Id = if
-             Id1 =:= Id2 -> Id1;
-             true -> make_ref()
-         end,
-    #ms{id=Id,valid=B1 band B2,slots=min(Slots1, Slots2)};
-merge_types(T1, T2) when T1 =/= T2 ->
-    %% Too different. All we know is that the type is a 'term'.
-    term.
+verify_y_init_1(-1, _Vst) ->
+    ok;
+verify_y_init_1(Y, Vst) ->
+    Reg = {y, Y},
+    assert_not_fragile(Reg, Vst),
+    case get_raw_type(Reg, Vst) of
+        uninitialized -> error({uninitialized_reg,Reg});
+        _ -> verify_y_init_1(Y - 1, Vst)
+    end.
 
-tuple_sz([Sz]) -> Sz;
-tuple_sz(Sz) -> Sz.
+verify_live(0, _Vst) ->
+    ok;
+verify_live(Live, Vst) when is_integer(Live), 0 < Live, Live =< 1023 ->
+    verify_live_1(Live - 1, Vst);
+verify_live(Live, _Vst) ->
+    error({bad_number_of_live_regs,Live}).
 
-merge_bool([]) -> {atom,[]};
-merge_bool(true) -> bool;
-merge_bool(false) -> bool;
-merge_bool(_) -> {atom,[]}.
-    
-verify_y_init(#vst{current=#st{y=Ys}}) ->
-    verify_y_init_1(gb_trees:to_list(Ys)).
-
-verify_y_init_1([]) -> ok;
-verify_y_init_1([{Y,uninitialized}|_]) ->
-    error({uninitialized_reg,{y,Y}});
-verify_y_init_1([{Y,{fragile,_}}|_]) ->
-    %% Unsafe. This term may be outside any heap belonging
-    %% to the process and would be corrupted by a GC.
-    error({fragile_message_reference,{y,Y}});
-verify_y_init_1([{_,_}|Ys]) ->
-    verify_y_init_1(Ys).
-
-verify_live(0, #vst{}) -> ok;
-verify_live(N, #vst{current=#st{x=Xs}}) ->
-    verify_live_1(N, Xs).
-
-verify_live_1(0, _) -> ok;
-verify_live_1(N, Xs) when is_integer(N) ->
-    X = N-1,
-    case gb_trees:is_defined(X, Xs) of
-	false -> error({{x,X},not_live});
-	true -> verify_live_1(X, Xs)
-    end;
-verify_live_1(N, _) -> error({bad_number_of_live_regs,N}).
+verify_live_1(-1, _) ->
+    ok;
+verify_live_1(X, Vst) when is_integer(X) ->
+    Reg = {x, X},
+    case get_raw_type(Reg, Vst) of
+        uninitialized -> error({Reg, not_live});
+        _ -> verify_live_1(X - 1, Vst)
+    end.
 
-verify_no_ct(#vst{current=#st{numy=none}}) -> ok;
+verify_no_ct(#vst{current=#st{numy=none}}) ->
+    ok;
 verify_no_ct(#vst{current=#st{numy=undecided}}) ->
     error(unknown_size_of_stackframe);
-verify_no_ct(#vst{current=#st{y=Ys}}) ->
-    case [Y || Y <- gb_trees:to_list(Ys), verify_no_ct_1(Y)] of
-	[] -> ok;
-	CT -> error({unfinished_catch_try,CT})
+verify_no_ct(#vst{current=St}=Vst) ->
+    case collect_try_catch_tags(St#st.numy - 1, Vst, []) of
+        [_|_]=Bad -> error({unfinished_catch_try,Bad});
+        [] -> ok
     end.
 
-verify_no_ct_1({_, {catchtag, _}}) -> true;
-verify_no_ct_1({_, {trytag, _}}) -> true;
-verify_no_ct_1({_, _}) -> false.
+%% Collects all try/catch tags, walking down from the Nth stack position.
+collect_try_catch_tags(-1, _Vst, Acc) ->
+    Acc;
+collect_try_catch_tags(Y, Vst, Acc0) ->
+    Tag = get_raw_type({y, Y}, Vst),
+    Acc = case is_try_catch_tag(Tag) of
+              true -> [{{y, Y}, Tag} | Acc0];
+              false -> Acc0
+          end,
+    collect_try_catch_tags(Y - 1, Vst, Acc).
+
+is_try_catch_tag({catchtag,_}) -> true;
+is_try_catch_tag({trytag,_}) -> true;
+is_try_catch_tag(_) -> false.
 
 eat_heap(N, #vst{current=#st{h=Heap0}=St}=Vst) ->
     case Heap0-N of
@@ -1647,89 +2569,190 @@ eat_heap_float(#vst{current=#st{hf=HeapFloats0}=St}=Vst) ->
 	    Vst#vst{current=St#st{hf=HeapFloats}}
     end.
 
-remove_fragility(#vst{current=#st{x=Xs0,y=Ys0}=St0}=Vst) ->
-    F = fun(_, {fragile,Type}) -> Type;
-           (_, Type) -> Type
-        end,
-    Xs = gb_trees:map(F, Xs0),
-    Ys = gb_trees:map(F, Ys0),
-    St = St0#st{x=Xs,y=Ys},
+%%% FRAGILITY
+%%%
+%%% The loop_rec/2 instruction may return a reference to a term that is not
+%%% part of the root set. That term or any part of it must not be included in a
+%%% garbage collection. Therefore, the term (or any part of it) must not be
+%%% passed to another function, placed in another term, or live in a Y register
+%%% over an instruction that may GC.
+%%%
+%%% Fragility is marked on a per-register (rather than per-value) basis.
+
+%% Marks Reg as fragile.
+mark_fragile(Reg, Vst) ->
+    #vst{current=#st{fragile=Fragile0}=St0} = Vst,
+    Fragile = cerl_sets:add_element(Reg, Fragile0),
+    St = St0#st{fragile=Fragile},
     Vst#vst{current=St}.
 
-propagate_fragility(Type, Ss, Vst) ->
-    F = fun(S) ->
-                case get_term_type_1(S, Vst) of
-                    {fragile,_} -> true;
-                    _ -> false
-                end
-        end,
-    case any(F, Ss) of
-        true -> make_fragile(Type);
-        false -> Type
+propagate_fragility(Reg, Args, #vst{current=St0}=Vst) ->
+    #st{fragile=Fragile0} = St0,
+
+    Sources = cerl_sets:from_list(Args),
+    Fragile = case cerl_sets:is_disjoint(Sources, Fragile0) of
+                  true -> cerl_sets:del_element(Reg, Fragile0);
+                  false -> cerl_sets:add_element(Reg, Fragile0)
+              end,
+
+    St = St0#st{fragile=Fragile},
+    Vst#vst{current=St}.
+
+%% Marks Reg as durable, must be used when assigning a newly created value to
+%% a register.
+remove_fragility(Reg, Vst) ->
+    #vst{current=#st{fragile=Fragile0}=St0} = Vst,
+    case cerl_sets:is_element(Reg, Fragile0) of
+        true ->
+            Fragile = cerl_sets:del_element(Reg, Fragile0),
+            St = St0#st{fragile=Fragile},
+            Vst#vst{current=St};
+        false ->
+            Vst
     end.
 
-bif_type('-', Src, Vst) ->
-    arith_type(Src, Vst);
-bif_type('+', Src, Vst) ->
-    arith_type(Src, Vst);
-bif_type('*', Src, Vst) ->
-    arith_type(Src, Vst);
-bif_type(abs, [Num], Vst) ->
+%% Marks all registers as durable.
+remove_fragility(#vst{current=St0}=Vst) ->
+    St = St0#st{fragile=cerl_sets:new()},
+    Vst#vst{current=St}.
+
+assert_durable_term(Src, Vst) ->
+    assert_term(Src, Vst),
+    assert_not_fragile(Src, Vst).
+
+assert_not_fragile({Kind,_}=Src, Vst) when Kind =:= x; Kind =:= y ->
+    check_limit(Src),
+    #vst{current=#st{fragile=Fragile}} = Vst,
+    case cerl_sets:is_element(Src, Fragile) of
+        true -> error({fragile_message_reference, Src});
+        false -> ok
+    end;
+assert_not_fragile(Lit, #vst{}) ->
+    assert_literal(Lit),
+    ok.
+
+%%%
+%%% Return/argument types of BIFs
+%%%
+
+bif_return_type('-', Src, Vst) ->
+    arith_return_type(Src, Vst);
+bif_return_type('+', Src, Vst) ->
+    arith_return_type(Src, Vst);
+bif_return_type('*', Src, Vst) ->
+    arith_return_type(Src, Vst);
+bif_return_type(abs, [Num], Vst) ->
     case get_term_type(Num, Vst) of
-	{float,_}=T -> T;
-	{integer,_}=T -> T;
-	_ -> number
+        {float,_}=T -> T;
+        {integer,_}=T -> T;
+        _ -> number
     end;
-bif_type(float, _, _) -> {float,[]};
-bif_type('/', _, _) -> {float,[]};
+bif_return_type(float, _, _) -> {float,[]};
+bif_return_type('/', _, _) -> {float,[]};
+%% Binary operations
+bif_return_type('binary_part', [_,_], _) -> binary;
+bif_return_type('binary_part', [_,_,_], _) -> binary;
+bif_return_type('bit_size', [_], _) -> {integer,[]};
+bif_return_type('byte_size', [_], _) -> {integer,[]};
 %% Integer operations.
-bif_type(ceil, [_], _) -> {integer,[]};
-bif_type('div', [_,_], _) -> {integer,[]};
-bif_type(floor, [_], _) -> {integer,[]};
-bif_type('rem', [_,_], _) -> {integer,[]};
-bif_type(length, [_], _) -> {integer,[]};
-bif_type(size, [_], _) -> {integer,[]};
-bif_type(trunc, [_], _) -> {integer,[]};
-bif_type(round, [_], _) -> {integer,[]};
-bif_type('band', [_,_], _) -> {integer,[]};
-bif_type('bor', [_,_], _) -> {integer,[]};
-bif_type('bxor', [_,_], _) -> {integer,[]};
-bif_type('bnot', [_], _) -> {integer,[]};
-bif_type('bsl', [_,_], _) -> {integer,[]};
-bif_type('bsr', [_,_], _) -> {integer,[]};
+bif_return_type(ceil, [_], _) -> {integer,[]};
+bif_return_type('div', [_,_], _) -> {integer,[]};
+bif_return_type(floor, [_], _) -> {integer,[]};
+bif_return_type('rem', [_,_], _) -> {integer,[]};
+bif_return_type(length, [_], _) -> {integer,[]};
+bif_return_type(size, [_], _) -> {integer,[]};
+bif_return_type(trunc, [_], _) -> {integer,[]};
+bif_return_type(round, [_], _) -> {integer,[]};
+bif_return_type('band', [_,_], _) -> {integer,[]};
+bif_return_type('bor', [_,_], _) -> {integer,[]};
+bif_return_type('bxor', [_,_], _) -> {integer,[]};
+bif_return_type('bnot', [_], _) -> {integer,[]};
+bif_return_type('bsl', [_,_], _) -> {integer,[]};
+bif_return_type('bsr', [_,_], _) -> {integer,[]};
 %% Booleans.
-bif_type('==', [_,_], _) -> bool;
-bif_type('/=', [_,_], _) -> bool;
-bif_type('=<', [_,_], _) -> bool;
-bif_type('<', [_,_], _) -> bool;
-bif_type('>=', [_,_], _) -> bool;
-bif_type('>', [_,_], _) -> bool;
-bif_type('=:=', [_,_], _) -> bool;
-bif_type('=/=', [_,_], _) -> bool;
-bif_type('not', [_], _) -> bool;
-bif_type('and', [_,_], _) -> bool;
-bif_type('or', [_,_], _) -> bool;
-bif_type('xor', [_,_], _) -> bool;
-bif_type(is_atom, [_], _) -> bool;
-bif_type(is_boolean, [_], _) -> bool;
-bif_type(is_binary, [_], _) -> bool;
-bif_type(is_float, [_], _) -> bool;
-bif_type(is_function, [_], _) -> bool;
-bif_type(is_integer, [_], _) -> bool;
-bif_type(is_list, [_], _) -> bool;
-bif_type(is_map, [_], _) -> bool;
-bif_type(is_number, [_], _) -> bool;
-bif_type(is_pid, [_], _) -> bool;
-bif_type(is_port, [_], _) -> bool;
-bif_type(is_reference, [_], _) -> bool;
-bif_type(is_tuple, [_], _) -> bool;
+bif_return_type('==', [_,_], _) -> bool;
+bif_return_type('/=', [_,_], _) -> bool;
+bif_return_type('=<', [_,_], _) -> bool;
+bif_return_type('<', [_,_], _) -> bool;
+bif_return_type('>=', [_,_], _) -> bool;
+bif_return_type('>', [_,_], _) -> bool;
+bif_return_type('=:=', [_,_], _) -> bool;
+bif_return_type('=/=', [_,_], _) -> bool;
+bif_return_type('not', [_], _) -> bool;
+bif_return_type('and', [_,_], _) -> bool;
+bif_return_type('or', [_,_], _) -> bool;
+bif_return_type('xor', [_,_], _) -> bool;
+bif_return_type(is_atom, [_], _) -> bool;
+bif_return_type(is_boolean, [_], _) -> bool;
+bif_return_type(is_binary, [_], _) -> bool;
+bif_return_type(is_float, [_], _) -> bool;
+bif_return_type(is_function, [_], _) -> bool;
+bif_return_type(is_function, [_,_], _) -> bool;
+bif_return_type(is_integer, [_], _) -> bool;
+bif_return_type(is_list, [_], _) -> bool;
+bif_return_type(is_map, [_], _) -> bool;
+bif_return_type(is_number, [_], _) -> bool;
+bif_return_type(is_pid, [_], _) -> bool;
+bif_return_type(is_port, [_], _) -> bool;
+bif_return_type(is_reference, [_], _) -> bool;
+bif_return_type(is_tuple, [_], _) -> bool;
 %% Misc.
-bif_type(node, [], _) -> {atom,[]};
-bif_type(node, [_], _) -> {atom,[]};
-bif_type(hd, [_], _) -> term;
-bif_type(tl, [_], _) -> term;
-bif_type(get, [_], _) -> term;
-bif_type(Bif, _, _) when is_atom(Bif) -> term.
+bif_return_type(tuple_size, [_], _) -> {integer,[]};
+bif_return_type(map_size, [_], _) -> {integer,[]};
+bif_return_type(node, [], _) -> {atom,[]};
+bif_return_type(node, [_], _) -> {atom,[]};
+bif_return_type(hd, [_], _) -> term;
+bif_return_type(tl, [_], _) -> term;
+bif_return_type(get, [_], _) -> term;
+bif_return_type(Bif, _, _) when is_atom(Bif) -> term.
+
+%% Generic
+bif_arg_types(tuple_size, [_]) -> [{tuple,[0],#{}}];
+bif_arg_types(map_size, [_]) -> [map];
+bif_arg_types(is_map_key, [_,_]) -> [term, map];
+bif_arg_types(map_get, [_,_]) -> [term, map];
+bif_arg_types(length, [_]) -> [list];
+bif_arg_types(hd, [_]) -> [cons];
+bif_arg_types(tl, [_]) -> [cons];
+%% Boolean
+bif_arg_types('not', [_]) -> [bool];
+bif_arg_types('and', [_,_]) -> [bool, bool];
+bif_arg_types('or', [_,_]) -> [bool, bool];
+bif_arg_types('xor', [_,_]) -> [bool, bool];
+%% Binary
+bif_arg_types('binary_part', [_,_]) ->
+    PosLen = {tuple, 2, #{ {integer,1} => {integer,[]},
+                           {integer,2} => {integer,[]} }},
+    [binary, PosLen];
+bif_arg_types('binary_part', [_,_,_]) ->
+    [binary, {integer,[]}, {integer,[]}];
+bif_arg_types('bit_size', [_]) -> [binary];
+bif_arg_types('byte_size', [_]) -> [binary];
+%% Numerical
+bif_arg_types('-', [_]) -> [number];
+bif_arg_types('-', [_,_]) -> [number,number];
+bif_arg_types('+', [_]) -> [number];
+bif_arg_types('+', [_,_]) -> [number,number];
+bif_arg_types('*', [_,_]) -> [number, number];
+bif_arg_types('/', [_,_]) -> [number, number];
+bif_arg_types(abs, [_]) -> [number];
+bif_arg_types(ceil, [_]) -> [number];
+bif_arg_types(float, [_]) -> [number];
+bif_arg_types(floor, [_]) -> [number];
+bif_arg_types(trunc, [_]) -> [number];
+bif_arg_types(round, [_]) -> [number];
+%% Integer-specific
+bif_arg_types('div', [_,_]) -> [{integer,[]}, {integer,[]}];
+bif_arg_types('rem', [_,_]) -> [{integer,[]}, {integer,[]}];
+bif_arg_types('band', [_,_]) -> [{integer,[]}, {integer,[]}];
+bif_arg_types('bor', [_,_]) -> [{integer,[]}, {integer,[]}];
+bif_arg_types('bxor', [_,_]) -> [{integer,[]}, {integer,[]}];
+bif_arg_types('bnot', [_]) -> [{integer,[]}];
+bif_arg_types('bsl', [_,_]) -> [{integer,[]}, {integer,[]}];
+bif_arg_types('bsr', [_,_]) -> [{integer,[]}, {integer,[]}];
+%% Unsafe type tests that may fail if an argument doesn't have the right type.
+bif_arg_types(is_function, [_,_]) -> [term, {integer,[]}];
+bif_arg_types(_, Args) -> [term || _Arg <- Args].
 
 is_bif_safe('/=', 2) -> true;
 is_bif_safe('<', 2) -> true;
@@ -1758,86 +2781,190 @@ is_bif_safe(self, 0) -> true;
 is_bif_safe(node, 0) -> true;
 is_bif_safe(_, _) -> false.
 
-arith_type([A,B], Vst) ->
-    case {get_term_type(A, Vst),get_term_type(B, Vst)} of
+arith_return_type([A], Vst) ->
+    %% Unary '+' or '-'.
+    case get_term_type(A, Vst) of
+	{integer,_} -> {integer,[]};
+	{float,_} -> {float,[]};
+        _ -> number
+    end;
+arith_return_type([A,B], Vst) ->
+    TypeA = get_term_type(A, Vst),
+    TypeB = get_term_type(B, Vst),
+    case {TypeA, TypeB} of
+	{{integer,_},{integer,_}} -> {integer,[]};
 	{{float,_},_} -> {float,[]};
 	{_,{float,_}} -> {float,[]};
 	{_,_} -> number
     end;
-arith_type(_, _) -> number.
+arith_return_type(_, _) -> number.
+
+%%%
+%%% Return/argument types of calls
+%%%
 
-return_type({extfunc,M,F,A}, Vst) -> return_type_1(M, F, A, Vst);
-return_type(_, _) -> term.
+call_return_type({extfunc,M,F,A}, Vst) -> call_return_type_1(M, F, A, Vst);
+call_return_type(_, _) -> term.
 
-return_type_1(erlang, setelement, 3, Vst) ->
-    Tuple = {x,1},
+call_return_type_1(erlang, setelement, 3, Vst) ->
+    IndexType = get_term_type({x,0}, Vst),
     TupleType =
-	case get_term_type(Tuple, Vst) of
-	    {tuple,_}=TT ->
-		TT;
-	    {literal,Lit} when is_tuple(Lit) ->
-		{tuple,tuple_size(Lit)};
-	    _ ->
-		{tuple,[0]}
-	end,
-    case get_term_type({x,0}, Vst) of
-	{integer,[]} -> TupleType;
-	{integer,I} -> upgrade_tuple_type({tuple,[I]}, TupleType);
-	_ -> TupleType
+        case get_term_type({x,1}, Vst) of
+            {literal,Tuple}=Lit when is_tuple(Tuple) -> get_literal_type(Lit);
+            {tuple,_,_}=TT -> TT;
+            _ -> {tuple,[0],#{}}
+        end,
+    case IndexType of
+        {integer,I} when is_integer(I) ->
+            case meet({tuple,[I],#{}}, TupleType) of
+                {tuple, Sz, Es0} ->
+                    ValueType = get_term_type({x,2}, Vst),
+                    Es = set_element_type({integer,I}, ValueType, Es0),
+                    {tuple, Sz, Es};
+                none ->
+                    TupleType
+            end;
+        _ ->
+            %% The index could point anywhere, so we must discard all element
+            %% information.
+            setelement(3, TupleType, #{})
     end;
-return_type_1(erlang, F, A, _) ->
-    return_type_erl(F, A);
-return_type_1(math, F, A, _) ->
-    return_type_math(F, A);
-return_type_1(M, F, A, _) when is_atom(M), is_atom(F), is_integer(A), A >= 0 ->
+call_return_type_1(erlang, '++', 2, Vst) ->
+    case get_term_type({x,0}, Vst) =:= cons orelse
+        get_term_type({x,1}, Vst) =:= cons of
+        true -> cons;
+        false -> list
+    end;
+call_return_type_1(erlang, '--', 2, _Vst) ->
+    list;
+call_return_type_1(erlang, F, A, _) ->
+    erlang_mod_return_type(F, A);
+call_return_type_1(lists, F, A, Vst) ->
+    lists_mod_return_type(F, A, Vst);
+call_return_type_1(math, F, A, _) ->
+    math_mod_return_type(F, A);
+call_return_type_1(M, F, A, _) when is_atom(M), is_atom(F), is_integer(A), A >= 0 ->
     term.
 
-return_type_erl(exit, 1) -> exception;
-return_type_erl(throw, 1) -> exception;
-return_type_erl(error, 1) -> exception;
-return_type_erl(error, 2) -> exception;
-return_type_erl(F, A) when is_atom(F), is_integer(A), A >= 0 -> term.
-
-return_type_math(cos, 1) -> {float,[]};
-return_type_math(cosh, 1) -> {float,[]};
-return_type_math(sin, 1) -> {float,[]};
-return_type_math(sinh, 1) -> {float,[]};
-return_type_math(tan, 1) -> {float,[]};
-return_type_math(tanh, 1) -> {float,[]};
-return_type_math(acos, 1) -> {float,[]};
-return_type_math(acosh, 1) -> {float,[]};
-return_type_math(asin, 1) -> {float,[]};
-return_type_math(asinh, 1) -> {float,[]};
-return_type_math(atan, 1) -> {float,[]};
-return_type_math(atanh, 1) -> {float,[]};
-return_type_math(erf, 1) -> {float,[]};
-return_type_math(erfc, 1) -> {float,[]};
-return_type_math(exp, 1) -> {float,[]};
-return_type_math(log, 1) -> {float,[]};
-return_type_math(log2, 1) -> {float,[]};
-return_type_math(log10, 1) -> {float,[]};
-return_type_math(sqrt, 1) -> {float,[]};
-return_type_math(atan2, 2) -> {float,[]};
-return_type_math(pow, 2) -> {float,[]};
-return_type_math(ceil, 1) -> {float,[]};
-return_type_math(floor, 1) -> {float,[]};
-return_type_math(fmod, 2) -> {float,[]};
-return_type_math(pi, 0) -> {float,[]};
-return_type_math(F, A) when is_atom(F), is_integer(A), A >= 0 -> term.
-
-check_limit({x,X}) when is_integer(X), X < 1023 ->
-    %% Note: x(1023) is reserved for use by the BEAM loader.
-    ok;
-check_limit({y,Y}) when is_integer(Y), Y < 1024 ->
-    ok;
-check_limit({fr,Fr}) when is_integer(Fr), Fr < 1024 ->
-    ok;
-check_limit(_) ->
-    error(limit).
+erlang_mod_return_type(exit, 1) -> exception;
+erlang_mod_return_type(throw, 1) -> exception;
+erlang_mod_return_type(error, 1) -> exception;
+erlang_mod_return_type(error, 2) -> exception;
+erlang_mod_return_type(F, A) when is_atom(F), is_integer(A), A >= 0 -> term.
+
+math_mod_return_type(cos, 1) -> {float,[]};
+math_mod_return_type(cosh, 1) -> {float,[]};
+math_mod_return_type(sin, 1) -> {float,[]};
+math_mod_return_type(sinh, 1) -> {float,[]};
+math_mod_return_type(tan, 1) -> {float,[]};
+math_mod_return_type(tanh, 1) -> {float,[]};
+math_mod_return_type(acos, 1) -> {float,[]};
+math_mod_return_type(acosh, 1) -> {float,[]};
+math_mod_return_type(asin, 1) -> {float,[]};
+math_mod_return_type(asinh, 1) -> {float,[]};
+math_mod_return_type(atan, 1) -> {float,[]};
+math_mod_return_type(atanh, 1) -> {float,[]};
+math_mod_return_type(erf, 1) -> {float,[]};
+math_mod_return_type(erfc, 1) -> {float,[]};
+math_mod_return_type(exp, 1) -> {float,[]};
+math_mod_return_type(log, 1) -> {float,[]};
+math_mod_return_type(log2, 1) -> {float,[]};
+math_mod_return_type(log10, 1) -> {float,[]};
+math_mod_return_type(sqrt, 1) -> {float,[]};
+math_mod_return_type(atan2, 2) -> {float,[]};
+math_mod_return_type(pow, 2) -> {float,[]};
+math_mod_return_type(ceil, 1) -> {float,[]};
+math_mod_return_type(floor, 1) -> {float,[]};
+math_mod_return_type(fmod, 2) -> {float,[]};
+math_mod_return_type(pi, 0) -> {float,[]};
+math_mod_return_type(F, A) when is_atom(F), is_integer(A), A >= 0 -> term.
+
+lists_mod_return_type(all, 2, _Vst) ->
+    bool;
+lists_mod_return_type(any, 2, _Vst) ->
+    bool;
+lists_mod_return_type(keymember, 3, _Vst) ->
+    bool;
+lists_mod_return_type(member, 2, _Vst) ->
+    bool;
+lists_mod_return_type(prefix, 2, _Vst) ->
+    bool;
+lists_mod_return_type(suffix, 2, _Vst) ->
+    bool;
+lists_mod_return_type(dropwhile, 2, _Vst) ->
+    list;
+lists_mod_return_type(duplicate, 2, _Vst) ->
+    list;
+lists_mod_return_type(filter, 2, _Vst) ->
+    list;
+lists_mod_return_type(flatten, 1, _Vst) ->
+    list;
+lists_mod_return_type(map, 2, Vst) ->
+    same_length_type({x,1}, Vst);
+lists_mod_return_type(MF, 3, Vst) when MF =:= mapfoldl; MF =:= mapfoldr ->
+    ListType = same_length_type({x,2}, Vst),
+    {tuple,2,#{ {integer,1} => ListType} };
+lists_mod_return_type(partition, 2, _Vst) ->
+    two_tuple(list, list);
+lists_mod_return_type(reverse, 1, Vst) ->
+    same_length_type({x,0}, Vst);
+lists_mod_return_type(seq, 2, _Vst) ->
+    list;
+lists_mod_return_type(sort, 1, Vst) ->
+    same_length_type({x,0}, Vst);
+lists_mod_return_type(sort, 2, Vst) ->
+    same_length_type({x,1}, Vst);
+lists_mod_return_type(splitwith, 2, _Vst) ->
+    two_tuple(list, list);
+lists_mod_return_type(takewhile, 2, _Vst) ->
+    list;
+lists_mod_return_type(unzip, 1, Vst) ->
+    ListType = same_length_type({x,0}, Vst),
+    two_tuple(ListType, ListType);
+lists_mod_return_type(usort, 1, Vst) ->
+    same_length_type({x,0}, Vst);
+lists_mod_return_type(zip, 2, _Vst) ->
+    list;
+lists_mod_return_type(zipwith, 3, _Vst) ->
+    list;
+lists_mod_return_type(_, _, _) ->
+    term.
+
+two_tuple(Type1, Type2) ->
+    {tuple,2,#{ {integer,1} => Type1,
+                {integer,2} => Type2 }}.
+
+same_length_type(Reg, Vst) ->
+    case get_term_type(Reg, Vst) of
+        {literal,[_|_]} -> cons;
+        cons -> cons;
+        nil -> nil;
+        _ -> list
+    end.
+
+check_limit({x,X}=Src) when is_integer(X) ->
+    if
+        %% Note: x(1023) is reserved for use by the BEAM loader.
+        0 =< X, X < 1023 -> ok;
+        1023 =< X -> error(limit);
+        X < 0 -> error({bad_register, Src})
+    end;
+check_limit({y,Y}=Src) when is_integer(Y) ->
+    if
+        0 =< Y, Y < 1024 -> ok;
+        1024 =< Y -> error(limit);
+        Y < 0 -> error({bad_register, Src})
+    end;
+check_limit({fr,Fr}=Src) when is_integer(Fr) ->
+    if
+        0 =< Fr, Fr < 1023 -> ok;
+        1023 =< Fr -> error(limit);
+        Fr < 0 -> error({bad_register, Src})
+    end.
 
 min(A, B) when is_integer(A), is_integer(B), A < B -> A;
 min(A, B) when is_integer(A), is_integer(B) -> B.
 
-gb_trees_from_list(L) -> gb_trees:from_orddict(lists:sort(L)).
+gb_trees_from_list(L) -> gb_trees:from_orddict(sort(L)).
 
 error(Error) -> throw(Error).
diff --git a/lib/compiler/src/beam_z.erl b/lib/compiler/src/beam_z.erl
index 1c9d762eb1..415b579240 100644
--- a/lib/compiler/src/beam_z.erl
+++ b/lib/compiler/src/beam_z.erl
@@ -71,6 +71,31 @@ undo_renames([{get_hd,Src,Dst1},{get_tl,Src,Dst2}|Is]) ->
     [{get_list,Src,Dst1,Dst2}|undo_renames(Is)];
 undo_renames([{get_tl,Src,Dst2},{get_hd,Src,Dst1}|Is]) ->
     [{get_list,Src,Dst1,Dst2}|undo_renames(Is)];
+undo_renames([{bs_put,_,{bs_put_binary,1,_},
+               [{atom,all},{literal,<<>>}]}|Is]) ->
+    undo_renames(Is);
+undo_renames([{bs_put,Fail,{bs_put_binary,1,_Flags},
+               [{atom,all},{literal,BinString}]}|Is0]) ->
+    Bits = bit_size(BinString),
+    Bytes = Bits div 8,
+    case Bits rem 8 of
+        0 ->
+            I = {bs_put_string,byte_size(BinString),
+                 {string,BinString}},
+            [undo_rename(I)|undo_renames(Is0)];
+        Rem ->
+            <<Binary:Bytes/bytes,Int:Rem>> = BinString,
+            PutInt = {bs_put_integer,Fail,{integer,Rem},1,
+                      {field_flags,[unsigned,big]},{integer,Int}},
+            Is = [PutInt|undo_renames(Is0)],
+            case Binary of
+                <<>> ->
+                    Is;
+                _ ->
+                    [{bs_put_string,byte_size(Binary),
+                      {string,Binary}}|Is]
+            end
+    end;
 undo_renames([I|Is]) ->
     [undo_rename(I)|undo_renames(Is)];
 undo_renames([]) -> [].
@@ -79,8 +104,6 @@ undo_rename({bs_put,F,{I,U,Fl},[Sz,Src]}) ->
     {I,F,Sz,U,Fl,Src};
 undo_rename({bs_put,F,{I,Fl},[Src]}) ->
     {I,F,Fl,Src};
-undo_rename({bs_put,{f,0},{bs_put_string,_,_}=I,[]}) ->
-    I;
 undo_rename({bif,bs_add=I,F,[Src1,Src2,{integer,U}],Dst}) ->
     {I,F,[Src1,Src2,U],Dst};
 undo_rename({bif,bs_utf8_size=I,F,[Src],Dst}) ->
@@ -101,7 +124,7 @@ undo_rename({test,bs_match_string=Op,F,[Ctx,Bin0]}) ->
 	      0 -> Bin0;
 	      Rem -> <<Bin0/bitstring,0:(8-Rem)>>
 	  end,
-    {test,Op,F,[Ctx,Bits,{string,binary_to_list(Bin)}]};
+    {test,Op,F,[Ctx,Bits,{string,Bin}]};
 undo_rename({put_map,Fail,assoc,S,D,R,L}) ->
     {put_map_assoc,Fail,S,D,R,L};
 undo_rename({put_map,Fail,exact,S,D,R,L}) ->
@@ -110,6 +133,8 @@ undo_rename({test,has_map_fields,Fail,[Src|List]}) ->
     {test,has_map_fields,Fail,Src,{list,List}};
 undo_rename({get_map_elements,Fail,Src,{list,List}}) ->
     {get_map_elements,Fail,Src,{list,List}};
+undo_rename({test,is_eq_exact,Fail,[Src,nil]}) ->
+    {test,is_nil,Fail,[Src]};
 undo_rename({select,I,Reg,Fail,List}) ->
     {I,Reg,Fail,{list,List}};
 undo_rename(I) -> I.
diff --git a/lib/compiler/src/cerl.erl b/lib/compiler/src/cerl.erl
index fce23bfd68..62cd5b5120 100644
--- a/lib/compiler/src/cerl.erl
+++ b/lib/compiler/src/cerl.erl
@@ -2157,12 +2157,16 @@ values_arity(Node) ->
 
 %% @spec c_binary(Segments::[cerl()]) -> cerl()
 %%
-%% @doc Creates an abstract binary-template. A binary object is a
-%% sequence of 8-bit bytes. It is specified by zero or more bit-string
-%% template <em>segments</em> of arbitrary lengths (in number of bits),
-%% such that the sum of the lengths is evenly divisible by 8. If
-%% <code>Segments</code> is <code>[S1, ..., Sn]</code>, the result
-%% represents "<code>#{<em>S1</em>, ..., <em>Sn</em>}#</code>". All the
+
+%% @doc Creates an abstract binary-template. A binary object is in
+%% this context a sequence of an arbitrary number of bits. (The number
+%% of bits used to be evenly divisible by 8, but after the
+%% introduction of bit strings in the Erlang language, the choice was
+%% made to use the binary template for all bit strings.) It is
+%% specified by zero or more bit-string template <em>segments</em> of
+%% arbitrary lengths (in number of bits). If <code>Segments</code> is
+%% <code>[S1, ..., Sn]</code>, the result represents
+%% "<code>#{<em>S1</em>, ..., <em>Sn</em>}#</code>". All the
 %% <code>Si</code> must have type <code>bitstr</code>.
 %%
 %% @see ann_c_binary/2
diff --git a/lib/compiler/src/cerl_clauses.erl b/lib/compiler/src/cerl_clauses.erl
index fa5104c01b..3fd7ddd181 100644
--- a/lib/compiler/src/cerl_clauses.erl
+++ b/lib/compiler/src/cerl_clauses.erl
@@ -14,8 +14,8 @@
 %% @author Richard Carlsson <[email protected]>
 %% @doc Utility functions for Core Erlang case/receive clauses.
 %%
-%% <p>Syntax trees are defined in the module <a
-%% href=""><code>cerl</code></a>.</p>
+%% <p>Syntax trees are defined in the module
+%% <a href="cerl"><code>cerl</code></a>.</p>
 %%
 %% @type cerl() = cerl:cerl()
 
diff --git a/lib/compiler/src/cerl_sets.erl b/lib/compiler/src/cerl_sets.erl
index 0361186713..f489baf238 100644
--- a/lib/compiler/src/cerl_sets.erl
+++ b/lib/compiler/src/cerl_sets.erl
@@ -204,4 +204,4 @@ fold(F, Init, D) ->
       Set2 :: set(Element).
 
 filter(F, D) ->
-    maps:from_list(lists:filter(fun({K,_}) -> F(K) end, maps:to_list(D))).
+    maps:filter(fun(K,_) -> F(K) end, D).
diff --git a/lib/compiler/src/compile.erl b/lib/compiler/src/compile.erl
index 6510571441..28db8986ff 100644
--- a/lib/compiler/src/compile.erl
+++ b/lib/compiler/src/compile.erl
@@ -31,6 +31,9 @@
 %% Erlc interface.
 -export([compile/3,compile_beam/3,compile_asm/3,compile_core/3]).
 
+%% Utility functions for compiler passes.
+-export([run_sub_passes/2]).
+
 -export_type([option/0]).
 
 -include("erl_compile.hrl").
@@ -39,6 +42,8 @@
 -import(lists, [member/2,reverse/1,reverse/2,keyfind/3,last/1,
 		map/2,flatmap/2,foreach/2,foldr/3,any/2]).
 
+-define(SUB_PASS_TIMES, compile__sub_pass_times).
+
 %%----------------------------------------------------------------------
 
 -type abstract_code() :: [erl_parse:abstract_form()].
@@ -64,6 +69,7 @@
 -type err_ret()  :: 'error' | {'error', errors(), warnings()}.
 -type comp_ret() :: mod_ret() | bin_ret() | err_ret().
 
+
 %%----------------------------------------------------------------------
 
 %%
@@ -143,6 +149,30 @@ noenv_output_generated(Opts) ->
 
 env_compiler_options() -> env_default_opts().
 
+
+%%%
+%%% Run sub passes from a compiler pass.
+%%%
+
+-spec run_sub_passes([term()], term()) -> term().
+
+run_sub_passes(Ps, St) ->
+    case get(?SUB_PASS_TIMES) of
+        undefined ->
+            Runner = fun(_Name, Run, S) -> Run(S) end,
+            run_sub_passes_1(Ps, Runner, St);
+        Times when is_list(Times) ->
+            Runner = fun(Name, Run, S0) ->
+                             T1 = erlang:monotonic_time(),
+                             S = Run(S0),
+                             T2 = erlang:monotonic_time(),
+                             put(?SUB_PASS_TIMES,
+                                 [{Name,T2-T1}|get(?SUB_PASS_TIMES)]),
+                             S
+                     end,
+            run_sub_passes_1(Ps, Runner, St)
+    end.
+
 %%
 %%  Local functions
 %%
@@ -180,8 +210,11 @@ do_compile(Input, Opts0) ->
                               {error,Reason}
                       end
              end,
-    %% Dialyzer has already spawned workers.
-    case lists:member(dialyzer, Opts) of
+    %% Some tools, like Dialyzer, has already spawned workers
+    %% and spawning extra workers actually slow the compilation
+    %% down instead of speeding it up, so we provide a mechanism
+    %% to bypass the compiler process.
+    case lists:member(no_spawn_compiler_process, Opts) of
         true ->
             IntFun();
         false ->
@@ -218,23 +251,33 @@ expand_opt(report, Os) ->
     [report_errors,report_warnings|Os];
 expand_opt(return, Os) ->
     [return_errors,return_warnings|Os];
+expand_opt(no_bsm3, Os) ->
+    %% The new bsm pass requires bsm3 instructions.
+    [no_bsm3,no_bsm_opt|Os];
 expand_opt(r16, Os) ->
-    [no_get_hd_tl,no_record_opt,no_utf8_atoms|Os];
+    expand_opt_before_21(Os);
 expand_opt(r17, Os) ->
-    [no_get_hd_tl,no_record_opt,no_utf8_atoms|Os];
+    expand_opt_before_21(Os);
 expand_opt(r18, Os) ->
-    [no_get_hd_tl,no_record_opt,no_utf8_atoms|Os];
+    expand_opt_before_21(Os);
 expand_opt(r19, Os) ->
-    [no_get_hd_tl,no_record_opt,no_utf8_atoms|Os];
+    expand_opt_before_21(Os);
 expand_opt(r20, Os) ->
-    [no_get_hd_tl,no_record_opt,no_utf8_atoms|Os];
+    expand_opt_before_21(Os);
+expand_opt(r21, Os) ->
+    [no_put_tuple2 | expand_opt(no_bsm3, Os)];
 expand_opt({debug_info_key,_}=O, Os) ->
     [encrypt_debug_info,O|Os];
-expand_opt(no_float_opt, Os) ->
-    %%Turn off the entire type optimization pass.
-    [no_topt|Os];
+expand_opt(no_type_opt, Os) ->
+    [no_ssa_opt_type_start,
+     no_ssa_opt_type_continue,
+     no_ssa_opt_type_finish | Os];
 expand_opt(O, Os) -> [O|Os].
 
+expand_opt_before_21(Os) ->
+    [no_put_tuple2, no_get_hd_tl, no_ssa_opt_record,
+     no_utf8_atoms | expand_opt(no_bsm3, Os)].
+
 %% format_error(ErrorDescriptor) -> string()
 
 -spec format_error(term()) -> iolist().
@@ -247,6 +290,10 @@ format_error(bad_crypto_key) ->
     "invalid crypto key.";
 format_error(no_crypto_key) ->
     "no crypto key supplied.";
+format_error({unimplemented_instruction,Instruction}) ->
+    io_lib:fwrite("native-code compilation failed because of an "
+                  "unimplemented instruction (~s).",
+		  [Instruction]);
 format_error({native, E}) ->
     io_lib:fwrite("native-code compilation failed with reason: ~tP.",
 		  [E, 25]);
@@ -387,17 +434,57 @@ fold_comp([{Name,Pass}|Ps], Run, Code0, St0) ->
     end;
 fold_comp([], _Run, Code, St) -> {ok,Code,St}.
 
+run_sub_passes_1([{Name,Run}|Ps], Runner, St0)
+  when is_atom(Name), is_function(Run, 1) ->
+    try Runner(Name, Run, St0) of
+        St ->
+            run_sub_passes_1(Ps, Runner, St)
+    catch
+        C:E:Stk ->
+            io:format("Sub pass ~s\n", [Name]),
+            erlang:raise(C, E, Stk)
+    end;
+run_sub_passes_1([], _, St) -> St.
+
 run_tc({Name,Fun}, Code, St) ->
+    put(?SUB_PASS_TIMES, []),
     T1 = erlang:monotonic_time(),
     Val = (catch Fun(Code, St)),
     T2 = erlang:monotonic_time(),
-    Elapsed = erlang:convert_time_unit(T2 - T1, native, millisecond),
+    Times = erase(?SUB_PASS_TIMES),
+    Elapsed = erlang:convert_time_unit(T2 - T1, native, microsecond),
     Mem0 = erts_debug:flat_size(Val)*erlang:system_info(wordsize),
     Mem = lists:flatten(io_lib:format("~.1f kB", [Mem0/1024])),
     io:format(" ~-30s: ~10.3f s ~12s\n",
-	      [Name,Elapsed/1000,Mem]),
+	      [Name,Elapsed/1000000,Mem]),
+    print_times(Times, Name),
     Val.
 
+print_times(Times0, Name) ->
+    Fam0 = sofs:relation(Times0),
+    Fam1 = sofs:rel2fam(Fam0),
+    Fam2 = sofs:to_external(Fam1),
+    Fam3 = [{W,lists:sum(Times)} || {W,Times} <- Fam2],
+    Fam = reverse(lists:keysort(2, Fam3)),
+    Total = case lists:sum([T || {_,T} <- Fam]) of
+                0 -> 1;
+                Total0 -> Total0
+            end,
+    case Fam of
+        [] ->
+            ok;
+        [_|_] ->
+            io:format("    %% Sub passes of ~s from slowest to fastest:\n", [Name]),
+            print_times_1(Fam, Total)
+    end.
+
+print_times_1([{Name,T}|Ts], Total) ->
+    Elapsed = erlang:convert_time_unit(T, native, microsecond),
+    io:format("    ~-27s: ~10.3f s ~3w %\n",
+              [Name,Elapsed/1000000,round(100*T/Total)]),
+    print_times_1(Ts, Total);
+print_times_1([], _Total) -> ok.
+
 run_eprof({Name,Fun}, Code, Name, St) ->
     io:format("~p: Running eprof\n", [Name]),
     c:appcall(tools, eprof, start_profiling, [[self()]]),
@@ -731,8 +818,6 @@ kernel_passes() ->
     %% Optimizations that must be done after all other optimizations.
     [{pass,sys_core_bsm},
      {iff,dcbsm,{listing,"core_bsm"}},
-     {pass,sys_core_dsetel},
-     {iff,dsetel,{listing,"dsetel"}},
 
      {iff,clint,?pass(core_lint_module)},
      {iff,core,?pass(save_core_code)},
@@ -741,8 +826,30 @@ kernel_passes() ->
      ?pass(v3_kernel),
      {iff,dkern,{listing,"kernel"}},
      {iff,'to_kernel',{done,"kernel"}},
-     {pass,v3_codegen},
-     {iff,dcg,{listing,"codegen"}}
+     {pass,beam_kernel_to_ssa},
+     {iff,dssa,{listing,"ssa"}},
+     {iff,ssalint,{pass,beam_ssa_lint}},
+     {delay,
+      [{unless,no_share_opt,{pass,beam_ssa_share}},
+       {iff,dssashare,{listing,"ssashare"}},
+       {iff,ssalint,{pass,beam_ssa_lint}},
+       {unless,no_bsm_opt,{pass,beam_ssa_bsm}},
+       {iff,dssabsm,{listing,"ssabsm"}},
+       {iff,ssalint,{pass,beam_ssa_lint}},
+       {unless,no_fun_opt,{pass,beam_ssa_funs}},
+       {iff,dssafuns,{listing,"ssafuns"}},
+       {iff,ssalint,{pass,beam_ssa_lint}},
+       {unless,no_ssa_opt,{pass,beam_ssa_opt}},
+       {iff,dssaopt,{listing,"ssaopt"}},
+       {iff,ssalint,{pass,beam_ssa_lint}},
+       {unless,no_recv_opt,{pass,beam_ssa_recv}},
+       {iff,drecv,{listing,"recv"}}]},
+     {pass,beam_ssa_pre_codegen},
+     {iff,dprecg,{listing,"precodegen"}},
+     {iff,ssalint,{pass,beam_ssa_lint}},
+     {pass,beam_ssa_codegen},
+     {iff,dcg,{listing,"codegen"}},
+     {iff,doldcg,{listing,"codegen"}}
      | asm_passes()].
 
 asm_passes() ->
@@ -751,34 +858,16 @@ asm_passes() ->
       [{pass,beam_a},
        {iff,da,{listing,"a"}},
        {unless,no_postopt,
-	[{unless,no_reorder,{pass,beam_reorder}},
-	 {iff,dre,{listing,"reorder"}},
-	 {pass,beam_block},
+	[{pass,beam_block},
 	 {iff,dblk,{listing,"block"}},
 	 {unless,no_except,{pass,beam_except}},
 	 {iff,dexcept,{listing,"except"}},
-	 {unless,no_bs_opt,{pass,beam_bs}},
-	 {iff,dbs,{listing,"bs"}},
-	 {unless,no_topt,{pass,beam_type}},
-	 {iff,dtype,{listing,"type"}},
-	 {pass,beam_split},
-	 {iff,dsplit,{listing,"split"}},
-	 {unless,no_dead,{pass,beam_dead}},
-	 {iff,ddead,{listing,"dead"}},
 	 {unless,no_jopt,{pass,beam_jump}},
 	 {iff,djmp,{listing,"jump"}},
 	 {unless,no_peep_opt,{pass,beam_peep}},
 	 {iff,dpeep,{listing,"peep"}},
 	 {pass,beam_clean},
 	 {iff,dclean,{listing,"clean"}},
-	 {unless,no_bsm_opt,{pass,beam_bsm}},
-	 {iff,dbsm,{listing,"bsm"}},
-	 {unless,no_recv_opt,{pass,beam_receive}},
-	 {iff,drecv,{listing,"recv"}},
-	 {unless,no_record_opt,{pass,beam_record}},
-	 {iff,drecord,{listing,"record"}},
-         {unless,no_blk2,?pass(block2)},
-	 {iff,dblk2,{listing,"block2"}},
 	 {unless,no_stack_trimming,{pass,beam_trim}},
 	 {iff,dtrim,{listing,"trim"}},
 	 {pass,beam_flatten}]},
@@ -787,7 +876,9 @@ asm_passes() ->
        %% need to do a few clean-ups to code.
        {iff,no_postopt,[{pass,beam_clean}]},
 
+       {iff,diffable,?pass(diffable)},
        {pass,beam_z},
+       {iff,diffable,{listing,"S"}},
        {iff,dz,{listing,"z"}},
        {iff,dopt,{listing,"optimize"}},
        {iff,'S',{listing,"S"}},
@@ -1360,10 +1451,6 @@ v3_kernel(Code0, #compile{options=Opts,warnings=Ws0}=St) ->
 	    {ok,Code,St}
     end.
 
-block2(Code0, #compile{options=Opts}=St) ->
-    {ok,Code} = beam_block:module(Code0, [no_blockify|Opts]),
-    {ok,Code,St}.
-
 test_old_inliner(#compile{options=Opts}) ->
     %% The point of this test is to avoid loading the old inliner
     %% if we know that it will not be used.
@@ -1568,18 +1655,22 @@ native_compile_1(Code, St) ->
 	    case IgnoreErrors of
 		true ->
 		    Ws = [{St#compile.ifile,[{none,?MODULE,{native,R}}]}],
-		    {ok,St#compile{warnings=St#compile.warnings ++ Ws}};
+		    {ok,Code,St#compile{warnings=St#compile.warnings ++ Ws}};
 		false ->
 		    Es = [{St#compile.ifile,[{none,?MODULE,{native,R}}]}],
 		    {error,St#compile{errors=St#compile.errors ++ Es}}
 	    end
     catch
+        exit:{unimplemented_instruction,_}=Unimplemented ->
+            Ws = [{St#compile.ifile,
+                   [{none,?MODULE,Unimplemented}]}],
+            {ok,Code,St#compile{warnings=St#compile.warnings ++ Ws}};
 	Class:R:Stack ->
 	    case IgnoreErrors of
 		true ->
 		    Ws = [{St#compile.ifile,
 			   [{none,?MODULE,{native_crash,R,Stack}}]}],
-		    {ok,St#compile{warnings=St#compile.warnings ++ Ws}};
+		    {ok,Code,St#compile{warnings=St#compile.warnings ++ Ws}};
 		false ->
 		    erlang:raise(Class, R, Stack)
 	    end
@@ -1849,6 +1940,39 @@ restore_expand_module([F|Fs]) ->
     [F|restore_expand_module(Fs)];
 restore_expand_module([]) -> [].
 
+%%%
+%%% Transform the BEAM code to make it more friendly for
+%%% diffing: using function names instead of labels for
+%%% local calls and number labels relative to each function.
+%%%
+
+diffable(Code0, St) ->
+    {Mod,Exp,Attr,Fs0,NumLabels} = Code0,
+    EntryLabels0 = [{Entry,{Name,Arity}} ||
+                       {function,Name,Arity,Entry,_} <- Fs0],
+    EntryLabels = maps:from_list(EntryLabels0),
+    Fs = [diffable_fix_function(F, EntryLabels) || F <- Fs0],
+    Code = {Mod,Exp,Attr,Fs,NumLabels},
+    {ok,Code,St}.
+
+diffable_fix_function({function,Name,Arity,Entry0,Is0}, LabelMap0) ->
+    Entry = maps:get(Entry0, LabelMap0),
+    {Is1,LabelMap} = diffable_label_map(Is0, 1, LabelMap0, []),
+    Fb = fun(Old) -> error({no_fb,Old}) end,
+    Is = beam_utils:replace_labels(Is1, [], LabelMap, Fb),
+    {function,Name,Arity,Entry,Is}.
+
+diffable_label_map([{label,Old}|Is], New, Map, Acc) ->
+    case Map of
+        #{Old:=NewLabel} ->
+            diffable_label_map(Is, New, Map, [{label,NewLabel}|Acc]);
+        #{} ->
+            diffable_label_map(Is, New+1, Map#{Old=>New}, [{label,New}|Acc])
+    end;
+diffable_label_map([I|Is], New, Map, Acc) ->
+    diffable_label_map(Is, New, Map, [I|Acc]);
+diffable_label_map([], _New, Map, Acc) ->
+    {Acc,Map}.
 
 -spec options() -> 'ok'.
 
@@ -1969,22 +2093,25 @@ pre_load() ->
     L = [beam_a,
 	 beam_asm,
 	 beam_block,
-	 beam_bs,
-	 beam_bsm,
 	 beam_clean,
-	 beam_dead,
 	 beam_dict,
 	 beam_except,
 	 beam_flatten,
 	 beam_jump,
+	 beam_kernel_to_ssa,
 	 beam_opcodes,
 	 beam_peep,
-	 beam_receive,
-         beam_record,
-	 beam_reorder,
-	 beam_split,
+	 beam_ssa,
+	 beam_ssa_bsm,
+	 beam_ssa_codegen,
+	 beam_ssa_dead,
+         beam_ssa_funs,
+	 beam_ssa_opt,
+	 beam_ssa_pre_codegen,
+	 beam_ssa_recv,
+	 beam_ssa_share,
+	 beam_ssa_type,
 	 beam_trim,
-	 beam_type,
 	 beam_utils,
 	 beam_validator,
 	 beam_z,
@@ -2001,9 +2128,7 @@ pre_load() ->
 	 erl_scan,
 	 sys_core_alias,
 	 sys_core_bsm,
-	 sys_core_dsetel,
 	 sys_core_fold,
-	 v3_codegen,
 	 v3_core,
 	 v3_kernel],
     _ = code:ensure_modules_loaded(L),
diff --git a/lib/compiler/src/compiler.app.src b/lib/compiler/src/compiler.app.src
index cf32fd251c..a086a3a8d3 100644
--- a/lib/compiler/src/compiler.app.src
+++ b/lib/compiler/src/compiler.app.src
@@ -24,24 +24,29 @@
 	     beam_a,
 	     beam_asm,
 	     beam_block,
-	     beam_bs,
-	     beam_bsm,
 	     beam_clean,
-	     beam_dead,
 	     beam_dict,
 	     beam_disasm,
 	     beam_except,
 	     beam_flatten,
 	     beam_jump,
+             beam_kernel_to_ssa,
 	     beam_listing,
 	     beam_opcodes,
 	     beam_peep,
-	     beam_receive,
-	     beam_reorder,
-	     beam_record,
-	     beam_split,
+             beam_ssa,
+             beam_ssa_bsm,
+             beam_ssa_codegen,
+             beam_ssa_dead,
+             beam_ssa_funs,
+             beam_ssa_lint,
+             beam_ssa_opt,
+             beam_ssa_pp,
+             beam_ssa_pre_codegen,
+             beam_ssa_recv,
+             beam_ssa_share,
+             beam_ssa_type,
 	     beam_trim,
-	     beam_type,
 	     beam_utils,
 	     beam_validator,
 	     beam_z,
@@ -60,12 +65,10 @@
 	     rec_env,
 	     sys_core_alias,
 	     sys_core_bsm,
-	     sys_core_dsetel,
 	     sys_core_fold,
 	     sys_core_fold_lists,
 	     sys_core_inline,
 	     sys_pre_attributes,
-	     v3_codegen,
 	     v3_core,
 	     v3_kernel,
 	     v3_kernel_pp
diff --git a/lib/compiler/src/core_parse.hrl b/lib/compiler/src/core_parse.hrl
index 83a6f0179c..90c796d3d9 100644
--- a/lib/compiler/src/core_parse.hrl
+++ b/lib/compiler/src/core_parse.hrl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1999-2016. All Rights Reserved.
+%% Copyright Ericsson AB 1999-2019. All Rights Reserved.
 %% 
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -29,81 +29,82 @@
 
 %% The record definitions appear alphabetically
 
--record(c_alias, {anno=[], var,		% var :: Tree,
-		  pat}).		% pat :: Tree
+-record(c_alias, {anno=[] :: list(), var :: cerl:cerl(),
+		  pat :: cerl:cerl()}).
 
--record(c_apply, {anno=[], op,		% op :: Tree,
-		  args}).		% args :: [Tree]
+-record(c_apply, {anno=[] :: list(), op :: cerl:cerl(),
+		  args :: [cerl:cerl()]}).
 
--record(c_binary, {anno=[], segments :: [cerl:c_bitstr()]}).
+-record(c_binary, {anno=[] :: list(), segments :: [cerl:c_bitstr()]}).
 
--record(c_bitstr, {anno=[], val,        % val :: Tree,
-		   size,		% size :: Tree,
-		   unit,		% unit :: Tree,
-		   type,		% type :: Tree,
-		   flags}).		% flags :: Tree
+-record(c_bitstr, {anno=[] :: list(), val :: cerl:cerl(),
+		   size :: cerl:cerl(),
+		   unit :: cerl:cerl(),
+		   type :: cerl:cerl(),
+		   flags :: cerl:cerl()}).
 
--record(c_call, {anno=[], module,	% module :: Tree,
-		 name,			% name :: Tree,
-		 args}).		% args :: [Tree]
+-record(c_call, {anno=[] :: list(), module :: cerl:cerl(),
+		 name :: cerl:cerl(),
+		 args :: [cerl:cerl()]}).
 
--record(c_case, {anno=[], arg,		% arg :: Tree,
-		 clauses}).		% clauses :: [Tree]
+-record(c_case, {anno=[] :: list(), arg :: cerl:cerl(),
+		 clauses :: [cerl:cerl()]}).
 
--record(c_catch, {anno=[], body}).	% body :: Tree
+-record(c_catch, {anno=[] :: list(), body :: cerl:cerl()}).
 
--record(c_clause, {anno=[], pats,	% pats :: [Tree],
-		   guard,		% guard :: Tree,
-		   body}).		% body :: Tree
+-record(c_clause, {anno=[] :: list(), pats :: [cerl:cerl()],
+		   guard :: cerl:cerl(),
+		   body :: cerl:cerl() | any()}). % TODO
 
--record(c_cons, {anno=[], hd,		% hd :: Tree,
-		 tl}).			% tl :: Tree
+-record(c_cons, {anno=[] :: list(), hd :: cerl:cerl(),
+		 tl :: cerl:cerl()}).
 
--record(c_fun, {anno=[], vars,		% vars :: [Tree],
-		body}).			% body :: Tree
+-record(c_fun, {anno=[] :: list(), vars :: [cerl:cerl()],
+		body :: cerl:cerl()}).
 
--record(c_let, {anno=[], vars,		% vars :: [Tree],
-		arg,			% arg :: Tree,
-		body}).			% body :: Tree
+-record(c_let, {anno=[] :: list(), vars :: [cerl:cerl()],
+		arg :: cerl:cerl(),
+		body :: cerl:cerl()}).
 
--record(c_letrec, {anno=[], defs,	% defs :: [#c_def{}],
-		   body}).		% body :: Tree
+-record(c_letrec, {anno=[] :: list(),
+                   defs :: [{cerl:cerl(), cerl:cerl()}],
+		   body :: cerl:cerl()}).
 
--record(c_literal, {anno=[], val}).	% val :: literal()
+-record(c_literal, {anno=[] :: list(), val :: any()}).
 
--record(c_map, {anno=[],
+-record(c_map, {anno=[] :: list(),
 		arg=#c_literal{val=#{}} :: cerl:c_var() | cerl:c_literal(),
 		es :: [cerl:c_map_pair()],
 		is_pat=false :: boolean()}).
 
--record(c_map_pair, {anno=[],
+-record(c_map_pair, {anno=[] :: list(),
 	             op :: #c_literal{val::'assoc'} | #c_literal{val::'exact'},
-		     key,
-		     val}).
+		     key :: any(),              % TODO
+		     val :: any()}).            % TODO
 
--record(c_module, {anno=[], name,	% name :: Tree,
-		   exports,		% exports :: [Tree],
-		   attrs,		% attrs :: [#c_def{}],
-		   defs}).		% defs :: [#c_def{}]
+-record(c_module, {anno=[] :: list(), name :: cerl:cerl(),
+		   exports :: [cerl:cerl()],
+		   attrs :: [{cerl:cerl(), cerl:cerl()}],
+		   defs :: [{cerl:cerl(), cerl:cerl()}]}).
 
--record(c_primop, {anno=[], name,	% name :: Tree,
-		   args}).		% args :: [Tree]
+-record(c_primop, {anno=[] :: list(), name :: cerl:cerl(),
+		   args :: [cerl:cerl()]}).
 
--record(c_receive, {anno=[], clauses,	% clauses :: [Tree],
-		    timeout,		% timeout :: Tree,
-		    action}).		% action :: Tree
+-record(c_receive, {anno=[] :: list(), clauses :: [cerl:cerl()],
+		    timeout :: cerl:cerl(),
+		    action :: cerl:cerl()}).
 
--record(c_seq, {anno=[], arg,		% arg :: Tree,
-		body}).			% body :: Tree
+-record(c_seq, {anno=[] :: list(), arg :: cerl:cerl() | any(), % TODO
+		body :: cerl:cerl()}).
 
--record(c_try, {anno=[], arg,		% arg :: Tree,
-		vars,			% vars :: [Tree],
-		body,			% body :: Tree
-		evars,			% evars :: [Tree],
-		handler}).		% handler :: Tree
+-record(c_try, {anno=[] :: list(), arg :: cerl:cerl(),
+		vars :: [cerl:cerl()],
+		body :: cerl:cerl(),
+		evars :: [cerl:cerl()],
+		handler :: cerl:cerl()}).
 
--record(c_tuple, {anno=[], es}).	% es :: [Tree]
+-record(c_tuple, {anno=[] :: list(), es :: [cerl:cerl()]}).
 
--record(c_values, {anno=[], es}).	% es :: [Tree]
+-record(c_values, {anno=[] :: list(), es :: [cerl:cerl()]}).
 
--record(c_var, {anno=[], name :: cerl:var_name()}).
+-record(c_var, {anno=[] :: list(), name :: cerl:var_name()}).
diff --git a/lib/compiler/src/erl_bifs.erl b/lib/compiler/src/erl_bifs.erl
index 68489a0122..94a5dfe012 100644
--- a/lib/compiler/src/erl_bifs.erl
+++ b/lib/compiler/src/erl_bifs.erl
@@ -32,6 +32,22 @@
 %%	Returns `true' if the function `Module:Name/Arity' does not
 %%	affect the state, nor depend on the state, although its
 %%	evaluation is not guaranteed to complete normally for all input.
+%%
+%%      NOTE: There is no need to include every new pure BIF
+%%      here. Including it here means that the value of the function
+%%      will be evaluated at compile-time if the arguments are
+%%      constant. If that optimization is not useful/desired, there is
+%%      no need to include the new BIF here.
+%%
+%%      Functions whose return value could conceivably change in a
+%%      future version of the runtime system must NOT be included here.
+%%
+%%      Here are some example of functions that should not be
+%%      included: `term_to_binary/1', hashing functions, non-trivial
+%%      encode/decode functions.
+%%
+%%      When unsure whether a new BIF should be included here, the
+%%      conservative safe choice is NOT to include it.
 
 -spec is_pure(atom(), atom(), arity()) -> boolean().
 
@@ -91,6 +107,7 @@ is_pure(erlang, is_bitstring, 1) -> true;
 %% erlang:is_builtin/3 depends on the state (i.e. the version of the emulator).
 is_pure(erlang, is_float, 1) -> true;
 is_pure(erlang, is_function, 1) -> true;
+is_pure(erlang, is_function, 2) -> true;
 is_pure(erlang, is_integer, 1) -> true;
 is_pure(erlang, is_list, 1) -> true;
 is_pure(erlang, is_map, 1) -> true;
@@ -107,6 +124,7 @@ is_pure(erlang, list_to_atom, 1) -> true;
 is_pure(erlang, list_to_binary, 1) -> true;
 is_pure(erlang, list_to_float, 1) -> true;
 is_pure(erlang, list_to_integer, 1) -> true;
+is_pure(erlang, list_to_integer, 2) -> true;
 is_pure(erlang, list_to_pid, 1) -> true;
 is_pure(erlang, list_to_tuple, 1) -> true;
 is_pure(erlang, max, 2) -> true;
@@ -193,6 +211,7 @@ is_safe(erlang, is_float, 1) -> true;
 is_safe(erlang, is_function, 1) -> true;
 is_safe(erlang, is_integer, 1) -> true;
 is_safe(erlang, is_list, 1) -> true;
+is_safe(erlang, is_map, 1) -> true;
 is_safe(erlang, is_number, 1) -> true;
 is_safe(erlang, is_pid, 1) -> true;
 is_safe(erlang, is_port, 1) -> true;
diff --git a/lib/compiler/src/genop.tab b/lib/compiler/src/genop.tab
index 02dead9e92..86590fad87 100755
--- a/lib/compiler/src/genop.tab
+++ b/lib/compiler/src/genop.tab
@@ -142,8 +142,7 @@ BEAM_FORMAT_NUMBER=0
 20: send/0
 
 ## @spec remove_message
-## @doc  Unlink the current message from the message queue and store a
-##       pointer to the message in x(0). Remove any timeout.
+## @doc  Unlink the current message from the message queue. Remove any timeout.
 21: remove_message/0
 
 ## @spec timeout
@@ -574,3 +573,26 @@ BEAM_FORMAT_NUMBER=0
 ## @doc  Get the tail (or cdr) part of a list (a cons cell) from Source and
 ##       put it into the register Tail.
 163: get_tl/2
+
+# OTP 22
+
+## @spec put_tuple2  Destination Elements
+## @doc  Build a tuple with the elements in the list Elements and put it
+##       put into register Destination.
+164: put_tuple2/2
+
+## @spec bs_get_tail Ctx Dst Live
+## @doc  Sets Dst to the tail of Ctx at the current position
+165: bs_get_tail/3
+
+## @spec bs_start_match3 Fail Bin Live Dst
+## @doc  Starts a binary match sequence
+166: bs_start_match3/4
+
+## @spec bs_get_position Ctx Dst Live
+## @doc  Sets Dst to the current position of Ctx
+167: bs_get_position/3
+
+## @spec bs_set_positon Ctx Pos
+## @doc  Sets the current position of Ctx to Pos
+168: bs_set_position/2
diff --git a/lib/compiler/src/sys_core_bsm.erl b/lib/compiler/src/sys_core_bsm.erl
index 62657933ee..685e807e65 100644
--- a/lib/compiler/src/sys_core_bsm.erl
+++ b/lib/compiler/src/sys_core_bsm.erl
@@ -24,223 +24,52 @@
 -export([module/2,format_error/1]).
 
 -include("core_parse.hrl").
--import(lists, [member/2,reverse/1,usort/1]).
 
 -spec module(cerl:c_module(), [compile:option()]) -> {'ok', cerl:c_module()}.
 
-module(#c_module{defs=Ds0}=Mod, Opts) ->
-    {Ds,Ws0} = function(Ds0, [], []),
-    case member(bin_opt_info, Opts) of
-        false ->
-            {ok,Mod#c_module{defs=Ds}};
-        true ->
-            Ws1 = [make_warning(Where, What) || {Where,What} <- Ws0],
-            Ws = usort(Ws1),
-            {ok,Mod#c_module{defs=Ds},Ws}
-    end.
+module(#c_module{defs=Ds}=Mod, _Opts) ->
+    {ok,Mod#c_module{defs=function(Ds)}}.
 
-function([{#c_var{name={F,Arity}}=Name,B0}|Fs], FsAcc, Ws0) ->
-    try cerl_trees:mapfold(fun bsm_an/2, Ws0, B0) of
-        {B,Ws} ->
-            function(Fs, [{Name,B}|FsAcc], Ws)
+function([{#c_var{name={F,Arity}}=Name,B0}|Fs]) ->
+    try cerl_trees:map(fun bsm_reorder/1, B0) of
+        B -> [{Name,B} | function(Fs)]
     catch
-        throw:unsafe_bs_context_to_binary ->
-            %% Unsafe bs_context_to_binary (in the sense that the
-            %% contents of the binary will probably be wrong).
-            %% Disable binary optimizations for the entire function.
-            %% We don't generate an INFO message, because this happens
-            %% very infrequently and it would be hard to explain in
-            %% a comprehensible way in an INFO message.
-            function(Fs, [{Name,B0}|FsAcc], Ws0);
         Class:Error:Stack ->
-	    io:fwrite("Function: ~w/~w\n", [F,Arity]),
-	    erlang:raise(Class, Error, Stack)
+            io:fwrite("Function: ~w/~w\n", [F,Arity]),
+            erlang:raise(Class, Error, Stack)
     end;
-function([], Fs, Ws) ->
-    {reverse(Fs),Ws}.
+function([]) ->
+    [].
 
 -type error() :: atom().
 -spec format_error(error()) -> nonempty_string().
 
-format_error(bin_opt_alias) ->
-    "INFO: the '=' operator will prevent delayed sub binary optimization";
-format_error(bin_partition) ->
-    "INFO: matching non-variables after a previous clause matching a variable "
-	"will prevent delayed sub binary optimization";
-format_error(bin_var_used) ->
-    "INFO: using a matched out sub binary will prevent "
-	"delayed sub binary optimization";
-format_error(orig_bin_var_used_in_guard) ->
-    "INFO: using the original binary variable in a guard will prevent "
-	"delayed sub binary optimization";
-format_error(bin_var_used_in_guard) ->
-    "INFO: using a matched out sub binary in a guard will prevent "
-	"delayed sub binary optimization".
-
+format_error(_) -> error(badarg).
 
-%%%
-%%% Annotate bit syntax matching to faciliate optimization in further passes.
-%%%
+%%% Reorder bit syntax matching to faciliate optimization in further passes.
 
-bsm_an(Core0, Ws0) ->
-    case bsm_an(Core0) of
-        {ok,Core} ->
-            {Core,Ws0};
-        {ok,Core,W} ->
-            {Core,[W|Ws0]}
-    end.
+bsm_reorder(#c_case{arg=#c_var{}=V}=Case) ->
+    bsm_reorder_1([V], Case);
+bsm_reorder(#c_case{arg=#c_values{es=Es}}=Case) ->
+    bsm_reorder_1(Es, Case);
+bsm_reorder(Core) ->
+    Core.
 
-bsm_an(#c_case{arg=#c_var{}=V}=Case) ->
-    bsm_an_1([V], Case);
-bsm_an(#c_case{arg=#c_values{es=Es}}=Case) ->
-    bsm_an_1(Es, Case);
-bsm_an(Other) ->
-    {ok,Other}.
-
-bsm_an_1(Vs0, #c_case{clauses=Cs0}=Case) ->
+bsm_reorder_1(Vs0, #c_case{clauses=Cs0}=Case) ->
     case bsm_leftmost(Cs0) of
-	none ->
-            {ok,Case};
-        1 ->
-            bsm_an_2(Vs0, Cs0, Case);
-        Pos ->
-            Vs = move_from_col(Pos, Vs0),
-            Cs = [C#c_clause{pats=move_from_col(Pos, Ps)} ||
-                     #c_clause{pats=Ps}=C <- Cs0],
-            bsm_an_2(Vs, Cs, Case)
-    end.
-
-bsm_an_2(Vs, Cs, Case) ->
-    try
-        bsm_ensure_no_partition(Cs),
-        {ok,bsm_do_an(Vs, Cs, Case)}
-    catch
-        throw:{problem,Where,What} ->
-            {ok,Case,{Where,What}}
+        Pos when Pos > 0, Pos =/= none ->
+            Vs = core_lib:make_values(move_from_col(Pos, Vs0)),
+            Cs = [C#c_clause{pats=move_from_col(Pos, Ps)}
+                  || #c_clause{pats=Ps}=C <- Cs0],
+            Case#c_case{arg=Vs,clauses=Cs};
+        _ ->
+            Case
     end.
 
 move_from_col(Pos, L) ->
     {First,[Col|Rest]} = lists:split(Pos - 1, L),
     [Col|First] ++ Rest.
 
-bsm_do_an([#c_var{name=Vname}=V0|Vs0], Cs0, Case) ->
-    bsm_inner_context_to_binary(Cs0),
-    Cs = bsm_do_an_var(Vname, Cs0),
-    V = bsm_annotate_for_reuse(V0),
-    Vs = core_lib:make_values([V|Vs0]),
-    Case#c_case{arg=Vs,clauses=Cs};
-bsm_do_an(_Vs, _Cs, Case) -> Case.
-
-bsm_inner_context_to_binary([#c_clause{body=B}|Cs]) ->
-    %% Consider:
-    %%
-    %%   foo(<<Length, Data/binary>>) ->  %Line 1
-    %%      case {Data, Length} of        %Line 2
-    %%        {_, 0} -> Data;             %Line 3
-    %%        {<<...>>, 4} -> ...         %Line 4
-    %%      end.
-    %%
-    %% No sub binary will be created for Data in line 1. The match
-    %% context will be passed on to the `case` in line 2. In line 3,
-    %% this pass inserts a `bs_context_to_binary` instruction to
-    %% convert the match context representing Data to a binary before
-    %% returning it. The problem is that the binary created will be
-    %% the original binary (including the matched out Length field),
-    %% not the tail of the binary as it is supposed to be.
-    %%
-    %% Here follows a heuristic to disable the binary optimizations
-    %% for the entire function if this code kind of code is found.
-
-    case cerl_trees:free_variables(B) of
-        [] ->
-            %% Since there are no free variables in the body of
-            %% this clause, there can't be any troublesome
-            %% bs_context_to_binary instructions.
-            bsm_inner_context_to_binary(Cs);
-        [_|_]=Free ->
-            %% One of the free variables could refer to a match context
-            %% created by the outer binary match.
-            F = fun(#c_primop{name=#c_literal{val=bs_context_to_binary},
-                              args=[#c_var{name=V}]}, _) ->
-                        case member(V, Free) of
-                            true ->
-                                %% This bs_context_to_binary instruction will
-                                %% make a binary of the match context from an
-                                %% outer binary match. It is very likely that
-                                %% the contents of the binary will be wrong
-                                %% (the original binary as opposed to only
-                                %% the tail binary).
-                                throw(unsafe_bs_context_to_binary);
-                            false ->
-                                %% Safe. This bs_context_to_binary instruction
-                                %% will make a binary from a match context
-                                %% defined in the body of the clause.
-                                ok
-                        end;
-                   (_, _) ->
-                        ok
-                end,
-            cerl_trees:fold(F, ok, B)
-    end;
-bsm_inner_context_to_binary([]) -> ok.
-
-bsm_do_an_var(V, [#c_clause{pats=[P|_],guard=G,body=B0}=C0|Cs]) ->
-    case P of
-	#c_var{name=VarName} ->
-	    case core_lib:is_var_used(V, G) of
-		true -> bsm_problem(C0, orig_bin_var_used_in_guard);
-		false -> ok
-	    end,
-	    case core_lib:is_var_used(VarName, G) of
-		true -> bsm_problem(C0, bin_var_used_in_guard);
-		false -> ok
-	    end,
-	    B1 = bsm_maybe_ctx_to_binary(VarName, B0),
-	    B = bsm_maybe_ctx_to_binary(V, B1),
-	    C = C0#c_clause{body=B},
-            [C|bsm_do_an_var(V, Cs)];
-        #c_alias{} ->
-	    case bsm_could_match_binary(P) of
-		false ->
-		    [C0|bsm_do_an_var(V, Cs)];
-		true ->
-		    bsm_problem(C0, bin_opt_alias)
-	    end;
-        _ ->
-	    case bsm_could_match_binary(P) andalso bsm_is_var_used(V, G, B0) of
-		false ->
-		    [C0|bsm_do_an_var(V, Cs)];
-		true ->
-		    bsm_problem(C0, bin_var_used)
-	    end
-    end;
-bsm_do_an_var(_, []) -> [].
-
-bsm_annotate_for_reuse(#c_var{anno=Anno}=Var) ->
-    Var#c_var{anno=[reuse_for_context|Anno]}.
-
-bsm_is_var_used(V, G, B) ->
-    core_lib:is_var_used(V, G) orelse core_lib:is_var_used(V, B).
-
-bsm_maybe_ctx_to_binary(V, B) ->
-    case core_lib:is_var_used(V, B) andalso not previous_ctx_to_binary(V, B) of
-	false ->
-	    B;
-	true ->
-	    #c_seq{arg=#c_primop{name=#c_literal{val=bs_context_to_binary},
-				 args=[#c_var{name=V}]},
-		   body=B}
-    end.
-
-previous_ctx_to_binary(V, Core) ->
-    case Core of
-	#c_seq{arg=#c_primop{name=#c_literal{val=bs_context_to_binary},
-			     args=[#c_var{name=V}]}} ->
-	    true;
-	_ ->
-	    false
-    end.
-
 %% bsm_leftmost(Cs) -> none | ArgumentNumber
 %%  Find the leftmost argument that matches a nonempty binary.
 %%  Return either 'none' or the argument number (1-N).
@@ -262,94 +91,3 @@ bsm_leftmost_2([_|Ps], Cs, N, Pos) ->
     bsm_leftmost_2(Ps, Cs, N+1, Pos);
 bsm_leftmost_2([], Cs, _, Pos) ->
     bsm_leftmost_1(Cs, Pos).
-
-%% bsm_ensure_no_partition(Cs) -> ok     (exception if problem)
-%%  There must only be a single bs_start_match2 instruction if we
-%%  are to reuse the binary variable for the match context.
-%%
-%%  To make sure that there is only a single bs_start_match2
-%%  instruction, we will check for partitions such as:
-%%
-%%             foo(<<...>>) -> ...
-%%             foo(<Variable>) when ... -> ...
-%%             foo(<Non-variable pattern>) ->
-%%
-%%  If there is such partition, we reject the optimization.
-
-bsm_ensure_no_partition(Cs) ->
-    bsm_ensure_no_partition_1(Cs, before).
-
-%% Loop through each clause.
-bsm_ensure_no_partition_1([#c_clause{pats=Ps,guard=G}|Cs], State0) ->
-    State = bsm_ensure_no_partition_2(Ps, G, State0),
-    case State of
-	'after' ->
-	    bsm_ensure_no_partition_after(Cs);
-	_ ->
-	    ok
-    end,
-    bsm_ensure_no_partition_1(Cs, State);
-bsm_ensure_no_partition_1([], _) -> ok.
-
-bsm_ensure_no_partition_2([#c_binary{}|_], _, _State) ->
-    within;
-bsm_ensure_no_partition_2([#c_alias{}=Alias|_], N, State) ->
-    %% Retrieve the real pattern that the alias refers to and check that.
-    P = bsm_real_pattern(Alias),
-    bsm_ensure_no_partition_2([P], N, State);
-bsm_ensure_no_partition_2([_|_], _, before=State) ->
-    %% No binary matching yet - therefore no partition.
-    State;
-bsm_ensure_no_partition_2([P|_], _, State) ->
-    case bsm_could_match_binary(P) of
-	false ->
-            State;
-	true ->
-	    %% The pattern P *may* match a binary, so we must update the state.
-	    %% (P must be a variable.)
-            'after'
-    end.
-
-bsm_ensure_no_partition_after([#c_clause{pats=Ps}=C|Cs]) ->
-    case Ps of
-        [#c_var{}|_] ->
-            bsm_ensure_no_partition_after(Cs);
-        _ ->
-            bsm_problem(C, bin_partition)
-    end;
-bsm_ensure_no_partition_after([]) -> ok.
-
-bsm_could_match_binary(#c_alias{pat=P}) -> bsm_could_match_binary(P);
-bsm_could_match_binary(#c_cons{}) -> false;
-bsm_could_match_binary(#c_tuple{}) -> false;
-bsm_could_match_binary(#c_literal{val=Lit}) -> is_bitstring(Lit);
-bsm_could_match_binary(_) -> true.
-
-bsm_real_pattern(#c_alias{pat=P}) -> bsm_real_pattern(P);
-bsm_real_pattern(P) -> P.
-
-bsm_problem(Where, What) ->
-    throw({problem,Where,What}).
-
-make_warning(Core, Term) ->
-    case should_suppress_warning(Core) of
-	true ->
-	    ok;
-	false ->
-            Anno = cerl:get_ann(Core),
-            Line = get_line(Anno),
-            File = get_file(Anno),
-            {File,[{Line,?MODULE,Term}]}
-    end.
-
-should_suppress_warning(Core) ->
-    Ann = cerl:get_ann(Core),
-    member(compiler_generated, Ann).
-
-get_line([Line|_]) when is_integer(Line) -> Line;
-get_line([_|T]) -> get_line(T);
-get_line([]) -> none.
-
-get_file([{file,File}|_]) -> File;
-get_file([_|T]) -> get_file(T);
-get_file([]) -> "no_file". % should not happen
diff --git a/lib/compiler/src/sys_core_dsetel.erl b/lib/compiler/src/sys_core_dsetel.erl
deleted file mode 100644
index 9ab83c210f..0000000000
--- a/lib/compiler/src/sys_core_dsetel.erl
+++ /dev/null
@@ -1,360 +0,0 @@
-%%
-%% %CopyrightBegin%
-%%
-%% Copyright Ericsson AB 2002-2018. All Rights Reserved.
-%%
-%% Licensed under the Apache License, Version 2.0 (the "License");
-%% you may not use this file except in compliance with the License.
-%% You may obtain a copy of the License at
-%%
-%%     http://www.apache.org/licenses/LICENSE-2.0
-%%
-%% Unless required by applicable law or agreed to in writing, software
-%% distributed under the License is distributed on an "AS IS" BASIS,
-%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-%% See the License for the specific language governing permissions and
-%% limitations under the License.
-%%
-%% %CopyrightEnd%
-%%
-%% Purpose : Using dsetelement to make multiple-field record updates
-%% faster.
-
-%% The expansion of record field updates, when more than one field is
-%% updated, but not a majority of the fields, will create a sequence of
-%% calls to 'erlang:setelement(Index, Value, Tuple)' where Tuple in the
-%% first call is the original record tuple, and in the subsequent calls
-%% Tuple is the result of the previous call. Furthermore, all Index
-%% values are constant positive integers, and the first call to
-%% 'setelement' will have the greatest index. Thus all the following
-%% calls do not actually need to test at run-time whether Tuple has type
-%% tuple, nor that the index is within the tuple bounds.
-%%
-%% Since this introduces destructive updates in the Core Erlang code, it
-%% must be done as a last stage before going to lower-level code.
-%%
-%% NOTE: Because there are currently no write barriers in the system,
-%% this kind of optimization can only be done when we are sure that
-%% garbage collection will not be triggered between the creation of the
-%% tuple and the destructive updates - otherwise we might insert
-%% pointers from an older generation to a newer.
-%%
-%% The rewriting is done as follows:
-%%
-%%    let X1 = call 'erlang':'setelement(5, Tuple, Value1)
-%%    in call 'erlang':'setelement(3, X1, Value2)
-%%  =>
-%%    let X1 = call 'erlang':'setelement(5, Tuple, Value1)
-%%    in do primop dsetelement(3, X1, Value2)
-%%       X1
-%% and
-%%    let X1 = call 'erlang':'setelement(5, Tuple, Value1)
-%%    in let X2 = call 'erlang':'setelement(3, X1, Value2)
-%%    in ...
-%%  =>
-%%    let X2 = call 'erlang':'setelement(5, Tuple, Value1)
-%%    in do primop 'dsetelement(3, X2, Value2)
-%%       ...
-%% if X1 is used exactly once.
-%% Thus, we need to track variable usage.
-%%
-
--module(sys_core_dsetel).
-
--export([module/2]).
-
--include("core_parse.hrl").
-
--spec module(cerl:c_module(), [compile:option()]) -> {'ok', cerl:c_module()}.
-
-module(M0, _Options) ->
-    M = visit_module(M0),
-    {ok,M}.
-
-visit_module(#c_module{defs=Ds0}=R) ->
-    Env = #{},
-    Ds = visit_module_1(Ds0, Env, []),
-    R#c_module{defs=Ds}.
-
-visit_module_1([{Name,F0}|Fs], Env, Acc) ->
-    try visit(Env, F0) of
-	{F,_} ->
-	    visit_module_1(Fs, Env, [{Name,F}|Acc])
-    catch
-        Class:Error:Stack ->
-	    #c_var{name={Func,Arity}} = Name,
-	    io:fwrite("Function: ~w/~w\n", [Func,Arity]),
-	    erlang:raise(Class, Error, Stack)
-    end;
-visit_module_1([], _, Acc) ->
-    lists:reverse(Acc).
-
-visit(Env, #c_var{name={_,_}}=R) ->
-    %% Ignore local function name.
-    {R, Env};
-visit(Env0, #c_var{name=X}=R) ->
-    %% There should not be any free variables. If there are,
-    %% the case will fail with an exception.
-    case Env0 of
-	#{X:=N} ->
-	    {R, Env0#{X:=N+1}}
-    end;
-visit(Env, #c_literal{}=R) ->
-    {R, Env};
-visit(Env0, #c_tuple{es=Es0}=R) ->
-    {Es1,Env1} = visit_list(Env0, Es0),
-    {R#c_tuple{es=Es1}, Env1};
-visit(Env0, #c_map{es=Es0}=R) ->
-    {Es1,Env1} = visit_list(Env0, Es0),
-    {R#c_map{es=Es1}, Env1};
-visit(Env0, #c_map_pair{key=K0,val=V0}=R) ->
-    {K,Env1} = visit(Env0, K0),
-    {V,Env2} = visit(Env1, V0),
-    {R#c_map_pair{key=K,val=V}, Env2};
-visit(Env0, #c_cons{hd=H0,tl=T0}=R) ->
-    {H1,Env1} = visit(Env0, H0),
-    {T1,Env2} = visit(Env1, T0),
-    {R#c_cons{hd=H1,tl=T1}, Env2};
-visit(Env0, #c_binary{segments=Segs}=R) ->
-    Env = visit_bin_segs(Env0, Segs),
-    {R, Env};
-visit(Env0, #c_values{es=Es0}=R) ->
-    {Es1,Env1} = visit_list(Env0, Es0),
-    {R#c_values{es=Es1}, Env1};
-visit(Env0, #c_fun{vars=Vs, body=B0}=R) ->
-    {Xs, Env1} = bind_vars(Vs, Env0),
-    {B1,Env2} = visit(Env1, B0),
-    {R#c_fun{body=B1}, restore_vars(Xs, Env0, Env2)};
-visit(Env0, #c_let{vars=Vs, arg=A0, body=B0}=R) ->
-    {A1,Env1} = visit(Env0, A0),
-    {Xs,Env2} = bind_vars(Vs, Env1),
-    {B1,Env3} = visit(Env2, B0),
-    rewrite(R#c_let{arg=A1,body=B1}, Env3, restore_vars(Xs, Env1, Env3));
-visit(Env0, #c_seq{arg=A0, body=B0}=R) ->
-    {A1,Env1} = visit(Env0, A0),
-    {B1,Env2} = visit(Env1, B0),
-    {R#c_seq{arg=A1,body=B1}, Env2};
-visit(Env0, #c_case{arg=A0,clauses=Cs0}=R) ->
-    {A1,Env1} = visit(Env0, A0),
-    {Cs1,Env2} = visit_list(Env1, Cs0),
-    {R#c_case{arg=A1,clauses=Cs1}, Env2};
-visit(Env0, #c_clause{pats=Ps,guard=G0,body=B0}=R) ->
-    {Vs, Env1} = visit_pats(Ps, Env0),
-    {G1,Env2} = visit(Env1, G0),
-    {B1,Env3} = visit(Env2, B0),
-    {R#c_clause{guard=G1,body=B1}, restore_vars(Vs, Env0, Env3)};
-visit(Env0, #c_receive{clauses=Cs0,timeout=T0,action=A0}=R) ->
-    {T1,Env1} = visit(Env0, T0),
-    {Cs1,Env2} = visit_list(Env1, Cs0),
-    {A1,Env3} = visit(Env2, A0),
-    {R#c_receive{clauses=Cs1,timeout=T1,action=A1}, Env3};
-visit(Env0, #c_apply{op=Op0, args=As0}=R) ->
-    {Op1,Env1} = visit(Env0, Op0),
-    {As1,Env2} = visit_list(Env1, As0),
-    {R#c_apply{op=Op1,args=As1}, Env2};
-visit(Env0, #c_call{module=M0,name=N0,args=As0}=R) ->
-    {M1,Env1} = visit(Env0, M0),
-    {N1,Env2} = visit(Env1, N0),
-    {As1,Env3} = visit_list(Env2, As0),
-    {R#c_call{module=M1,name=N1,args=As1}, Env3};
-visit(Env0, #c_primop{name=N0, args=As0}=R) ->
-    {N1,Env1} = visit(Env0, N0),
-    {As1,Env2} = visit_list(Env1, As0),
-    {R#c_primop{name=N1,args=As1}, Env2};
-visit(Env0, #c_try{arg=E0, vars=Vs, body=B0, evars=Evs, handler=H0}=R) ->
-    {E1,Env1} = visit(Env0, E0),
-    {Xs, Env2} = bind_vars(Vs, Env1),
-    {B1,Env3} = visit(Env2, B0),
-    Env4 = restore_vars(Xs, Env1, Env3),
-    {Ys, Env5} = bind_vars(Evs, Env4),
-    {H1,Env6} = visit(Env5, H0),
-    {R#c_try{arg=E1,body=B1,handler=H1}, restore_vars(Ys, Env4, Env6)};
-visit(Env0, #c_catch{body=B0}=R) ->
-    {B1,Env1} = visit(Env0, B0),
-    {R#c_catch{body=B1}, Env1};
-visit(Env0, #c_letrec{defs=Ds0,body=B0}=R) ->
-    {Xs, Env1} = bind_vars([V || {V,_} <- Ds0], Env0),
-    {Ds1,Env2} = visit_def_list(Env1, Ds0),
-    {B1,Env3} = visit(Env2, B0),
-    {R#c_letrec{defs=Ds1,body=B1}, restore_vars(Xs, Env0, Env3)}.
-%% The following general code for handling modules is slow if a module
-%% contains very many functions. There is special code in visit_module/1
-%% which is much faster.
-%% visit(Env0, #c_module{defs=D0}=R) ->
-%%     {R1,Env1} = visit(Env0, #c_letrec{defs=D0,body=#c_nil{}}),
-%%     {R#c_module{defs=R1#c_letrec.defs}, Env1};
-
-visit_list(Env, L) ->
-    lists:mapfoldl(fun (E, A) -> visit(A, E) end, Env, L).
-
-visit_def_list(Env, L) ->
-    lists:mapfoldl(fun ({Name,V0}, E0) ->
-			   {V1,E1} = visit(E0, V0),
-			   {{Name,V1}, E1}
-		   end, Env, L).
-
-visit_bin_segs(Env, Segs) ->
-    lists:foldl(fun (#c_bitstr{val=Val,size=Sz}, E0) ->
-			{_, E1} = visit(E0, Val),
-			{_, E2} = visit(E1, Sz),
-			E2
-		end, Env, Segs).
-    
-bind_vars(Vs, Env) ->
-    bind_vars(Vs, Env, []).
-
-bind_vars([#c_var{name=X}|Vs], Env0, Xs)->
-    bind_vars(Vs, Env0#{X=>0}, [X|Xs]);
-bind_vars([], Env,Xs) ->
-    {Xs, Env}.
-
-visit_pats(Ps, Env) ->
-    visit_pats(Ps, Env, []).
-
-visit_pats([P|Ps], Env0, Vs0) ->
-    {Vs1, Env1} = visit_pat(Env0, P, Vs0),
-    visit_pats(Ps, Env1, Vs1);
-visit_pats([], Env, Vs) ->
-    {Vs, Env}.
-
-visit_pat(Env0, #c_var{name=V}, Vs) ->
-    {[V|Vs], Env0#{V=>0}};
-visit_pat(Env0, #c_tuple{es=Es}, Vs) ->
-    visit_pats(Es, Env0, Vs);
-visit_pat(Env0, #c_map{es=Es}, Vs) ->
-    visit_pats(Es, Env0, Vs);
-visit_pat(Env0, #c_map_pair{op=#c_literal{val=exact},key=V,val=K}, Vs0) ->
-    {Vs1, Env1} = visit_pat(Env0, V, Vs0),
-    visit_pat(Env1, K, Vs1);
-visit_pat(Env0, #c_cons{hd=H,tl=T}, Vs0) ->
-    {Vs1, Env1} = visit_pat(Env0, H, Vs0),
-    visit_pat(Env1, T, Vs1);
-visit_pat(Env0, #c_binary{segments=Segs}, Vs) ->
-    visit_pats(Segs, Env0, Vs);
-visit_pat(Env0, #c_bitstr{val=Val,size=Sz}, Vs0) ->
-    {Vs1, Env1} =
-	case Sz of
-	    #c_var{name=V} ->
-		%% We don't tolerate free variables.
-		case Env0 of
-		    #{V:=N} ->
-			{Vs0, Env0#{V:=N+1}}
-		end;
-	    _ ->
-		visit_pat(Env0, Sz, Vs0)
-	end,
-    visit_pat(Env1, Val, Vs1);
-visit_pat(Env0, #c_alias{pat=P,var=#c_var{name=V}}, Vs) ->
-    visit_pat(Env0#{V=>0}, P, [V|Vs]);
-visit_pat(Env, #c_literal{}, Vs) ->
-    {Vs, Env}.
-
-restore_vars([V|Vs], Env0, Env1) ->
-    case Env0 of
-	#{V:=N} ->
-	    restore_vars(Vs, Env0, Env1#{V=>N});
-	_ ->
-	    restore_vars(Vs, Env0, maps:remove(V, Env1))
-    end;
-restore_vars([], _, Env1) ->
-    Env1.
-
-
-%%    let X1 = call 'erlang':'setelement(5, Tuple, Value1)
-%%    in call 'erlang':'setelement(3, X1, Value2)
-%%  =>
-%%    let X1 = call 'erlang':'setelement(5, Tuple, Value1)
-%%    in do primop dsetelement(3, X1, Value2)
-%%       X1
-
-rewrite(#c_let{vars=[#c_var{name=X}=V]=Vs,
-	       arg=#c_call{module=#c_literal{val='erlang'},
-			   name=#c_literal{val='setelement'},
-			   args=[#c_literal{val=Index1}, _Tuple, _Val1]
-			  }=A,
- 	       body=#c_call{anno=Banno,module=#c_literal{val='erlang'},
- 			    name=#c_literal{val='setelement'},
-  			    args=[#c_literal{val=Index2},
-				  #c_var{name=X},
-				  Val2]
-  			   }
-	      }=R,
-	_BodyEnv, FinalEnv)
-  when is_integer(Index1), is_integer(Index2), Index2 > 0, Index1 > Index2 ->
-    case is_safe(Val2) of
-	true ->
-	    {R#c_let{vars=Vs,
-		     arg=A,
-		     body=#c_seq{arg=#c_primop{
-				   anno=Banno,
-				   name=#c_literal{val='dsetelement'},
-				   args=[#c_literal{val=Index2},
-					 V,
-					 Val2]},
-				 body=V}
-		    },
-	     FinalEnv};
-	false ->
-	    {R, FinalEnv}
-    end;
-
-%%    let X1 = call 'erlang':'setelement(5, Tuple, Value1)
-%%    in let X2 = 'erlang':'setelement(3, X1, Value2)
-%%    in ...
-%%  =>
-%%    let X2 = call 'erlang':'setelement(5, Tuple, Value1)
-%%    in do primop dsetelement(3, X2, Value2)
-%%       ...
-%% if X1 is used exactly once.
-
-rewrite(#c_let{vars=[#c_var{name=X1}],
-	       arg=#c_call{module=#c_literal{val='erlang'},
-			   name=#c_literal{val='setelement'},
-			   args=[#c_literal{val=Index1}, _Tuple, _Val1]
-			  }=A,
-	       body=#c_let{vars=[#c_var{}=V]=Vs,
-			   arg=#c_call{anno=Banno,
-				       module=#c_literal{val='erlang'},
-				       name=#c_literal{val='setelement'},
-				       args=[#c_literal{val=Index2},
-					     #c_var{name=X1},
-					     Val2]},
-			   body=B}
-	      }=R,
-	BodyEnv, FinalEnv)
-  when is_integer(Index1), is_integer(Index2), Index2 > 0, Index1 > Index2 ->
-    case is_single_use(X1, BodyEnv) andalso is_safe(Val2) of
-	true ->
-	    {R#c_let{vars=Vs,
-		     arg=A,
-		     body=#c_seq{arg=#c_primop{
-				   anno=Banno,
-				   name=#c_literal{val='dsetelement'},
-				   args=[#c_literal{val=Index2},
-					 V,
-					 Val2]},
-				 body=B}
-		    },
-	     FinalEnv};
-	false ->
-	    {R, FinalEnv}
-    end;
-
-rewrite(R, _, FinalEnv) ->
-    {R, FinalEnv}.
-
-%% is_safe(CoreExpr) -> true|false
-%%  Determines whether the Core expression can cause a GC collection at run-time.
-%%  Note: Assumes that the constant pool is turned on.
-
-is_safe(#c_var{}) -> true;
-is_safe(#c_literal{}) -> true;
-is_safe(_) -> false.
-
-is_single_use(V, Env) ->
-    case Env of
-	#{V:=1} ->
-	    true;
-	_ ->
-	    false
-    end.
diff --git a/lib/compiler/src/sys_core_fold.erl b/lib/compiler/src/sys_core_fold.erl
index 1681d97efb..4939a94a92 100644
--- a/lib/compiler/src/sys_core_fold.erl
+++ b/lib/compiler/src/sys_core_fold.erl
@@ -99,7 +99,7 @@
               t=#{} :: map(),                       %Types
               in_guard=false}).                     %In guard or not.
 
--type type_info() :: cerl:cerl() | 'bool' | 'integer'.
+-type type_info() :: cerl:cerl() | 'bool' | 'integer' | {'fun', pos_integer()}.
 -type yes_no_maybe() :: 'yes' | 'no' | 'maybe'.
 -type sub() :: #sub{}.
 
@@ -478,9 +478,20 @@ expr(#c_try{anno=A,arg=E0,vars=Vs0,body=B0,evars=Evs0,handler=H0}=Try, _, Sub0)
 	false ->
 	    {Evs1,Sub2} = var_list(Evs0, Sub0),
 	    H1 = body(H0, value, Sub2),
-	    Try#c_try{arg=E1,vars=Vs1,body=B1,evars=Evs1,handler=H1}
+	    H2 = opt_try_handler(H1, lists:last(Evs1)),
+	    Try#c_try{arg=E1,vars=Vs1,body=B1,evars=Evs1,handler=H2}
     end.
 
+%% Attempts to convert old erlang:get_stacktrace/0 calls into the new
+%% three-argument catch, with possibility of further optimisations.
+opt_try_handler(#c_call{anno=A,module=#c_literal{val=erlang},name=#c_literal{val=get_stacktrace},args=[]}, Var) ->
+    #c_primop{anno=A,name=#c_literal{val=build_stacktrace},args=[Var]};
+opt_try_handler(#c_case{clauses=Cs0} = Case, Var) ->
+    Cs = [C#c_clause{body=opt_try_handler(B, Var)} || #c_clause{body=B} = C <- Cs0],
+    Case#c_case{clauses=Cs};
+opt_try_handler(#c_let{arg=Arg} = Let, Var) ->
+    Let#c_let{arg=opt_try_handler(Arg, Var)};
+opt_try_handler(X, _) -> X.
 
 %% If a fun or its application is used as an argument, then it's unsafe to
 %% handle it in effect context as the side-effects may rely on its return
@@ -561,6 +572,7 @@ ifes_list(FVar, [E|Es], Safe) ->
 ifes_list(_FVar, [], _Safe) ->
     true.
 
+
 expr_list(Es, Ctxt, Sub) ->
     [expr(E, Ctxt, Sub) || E <- Es].
 
@@ -949,18 +961,16 @@ fold_lit_args(Call, Module, Name, Args0) ->
 %%
 fold_non_lit_args(Call, erlang, is_boolean, [Arg], Sub) ->
     eval_is_boolean(Call, Arg, Sub);
-fold_non_lit_args(Call, erlang, element, [Arg1,Arg2], Sub) ->
-    eval_element(Call, Arg1, Arg2, Sub);
 fold_non_lit_args(Call, erlang, length, [Arg], _) ->
     eval_length(Call, Arg);
 fold_non_lit_args(Call, erlang, '++', [Arg1,Arg2], _) ->
     eval_append(Call, Arg1, Arg2);
 fold_non_lit_args(Call, lists, append, [Arg1,Arg2], _) ->
     eval_append(Call, Arg1, Arg2);
-fold_non_lit_args(Call, erlang, setelement, [Arg1,Arg2,Arg3], _) ->
-    eval_setelement(Call, Arg1, Arg2, Arg3);
-fold_non_lit_args(Call, erlang, is_record, [Arg1,Arg2,Arg3], Sub) ->
-    eval_is_record(Call, Arg1, Arg2, Arg3, Sub);
+fold_non_lit_args(Call, erlang, is_function, [Arg1], Sub) ->
+    eval_is_function_1(Call, Arg1, Sub);
+fold_non_lit_args(Call, erlang, is_function, [Arg1,Arg2], Sub) ->
+    eval_is_function_2(Call, Arg1, Arg2, Sub);
 fold_non_lit_args(Call, erlang, N, Args, Sub) ->
     NumArgs = length(Args),
     case erl_internal:comp_op(N, NumArgs) of
@@ -976,6 +986,22 @@ fold_non_lit_args(Call, erlang, N, Args, Sub) ->
     end;
 fold_non_lit_args(Call, _, _, _, _) -> Call.
 
+eval_is_function_1(Call, Arg1, Sub) ->
+    case get_type(Arg1, Sub) of
+        none -> Call;
+        {'fun',_} -> #c_literal{anno=cerl:get_ann(Call),val=true};
+        _ -> #c_literal{anno=cerl:get_ann(Call),val=false}
+    end.
+
+eval_is_function_2(Call, Arg1, #c_literal{val=Arity}, Sub)
+  when is_integer(Arity), Arity > 0 ->
+    case get_type(Arg1, Sub) of
+        none -> Call;
+        {'fun',Arity} -> #c_literal{anno=cerl:get_ann(Call),val=true};
+        _ -> #c_literal{anno=cerl:get_ann(Call),val=false}
+    end;
+eval_is_function_2(Call, _Arg1, _Arg2, _Sub) -> Call.
+
 %% Evaluate a relational operation using type information.
 eval_rel_op(Call, Op, [#c_var{name=V},#c_var{name=V}], _) ->
     Bool = erlang:Op(same, same),
@@ -1109,96 +1135,6 @@ eval_append(Call, #c_cons{anno=Anno,hd=H,tl=T}, List) ->
 eval_append(Call, X, Y) ->
     Call#c_call{args=[X,Y]}.			%Rebuild call arguments.
 
-%% eval_element(Call, Pos, Tuple, Types) -> Val.
-%%  Evaluates element/2 if the position Pos is a literal and
-%%  the shape of the tuple Tuple is known.
-%%
-eval_element(Call, #c_literal{val=Pos}, Tuple, Types)
-  when is_integer(Pos) ->
-    case get_type(Tuple, Types) of
-	none ->
-	    Call;
-	Type ->
-	    Es = case cerl:is_c_tuple(Type) of
-		     false -> [];
-		     true -> cerl:tuple_es(Type)
-		 end,
-	    if
-		1 =< Pos, Pos =< length(Es) ->
-		    El = lists:nth(Pos, Es),
-		    try
-			cerl:set_ann(pat_to_expr(El), [compiler_generated])
-		    catch
-			throw:impossible ->
-			    Call
-		    end;
-		true ->
-		    %% Index outside tuple or not a tuple.
-		    eval_failure(Call, badarg)
-	    end
-    end;
-eval_element(Call, Pos, Tuple, Sub) ->
-    case is_int_type(Pos, Sub) =:= no orelse
-	is_tuple_type(Tuple, Sub) =:= no of
-	true ->
-	    eval_failure(Call, badarg);
-	false ->
-	    Call
-    end.
-
-%% eval_is_record(Call, Var, Tag, Size, Types) -> Val.
-%%  Evaluates is_record/3 using type information.
-%%
-eval_is_record(Call, Term, #c_literal{val=NeededTag},
-	       #c_literal{val=Size}, Types) ->
-    case get_type(Term, Types) of
-	none ->
-	    Call;
-	Type ->
-	    Es = case cerl:is_c_tuple(Type) of
-		     false -> [];
-		     true -> cerl:tuple_es(Type)
-		 end,
-	    case Es of
-		[#c_literal{val=Tag}|_] ->
-		    Bool = Tag =:= NeededTag andalso
-			length(Es) =:= Size,
-		    #c_literal{val=Bool};
-		_ ->
-		    #c_literal{val=false}
-	    end
-    end;
-eval_is_record(Call, _, _, _, _) -> Call.
-
-%% eval_setelement(Call, Pos, Tuple, NewVal) -> Core.
-%%  Evaluates setelement/3 if position Pos is an integer
-%%  and the shape of the tuple Tuple is known.
-%%
-eval_setelement(Call, #c_literal{val=Pos}, Tuple, NewVal)
-  when is_integer(Pos) ->
-    case cerl:is_data(Tuple) of
-	false ->
-	    Call;
-	true ->
-	    Es0 = case cerl:is_c_tuple(Tuple) of
-		      false -> [];
-		      true -> cerl:tuple_es(Tuple)
-		  end,
-	    if
-		1 =< Pos, Pos =< length(Es0) ->
-		    Es = eval_setelement_1(Pos, Es0, NewVal),
-		    cerl:update_c_tuple(Tuple, Es);
-		true ->
-		    eval_failure(Call, badarg)
-	    end
-    end;
-eval_setelement(Call, _, _, _) -> Call.
-
-eval_setelement_1(1, [_|T], NewVal) ->
-    [NewVal|T];
-eval_setelement_1(Pos, [H|T], NewVal) when Pos > 1 ->
-    [H|eval_setelement_1(Pos-1, T, NewVal)].
-
 %% eval_failure(Call, Reason) -> Core.
 %%  Warn for a call that will fail and replace the call with
 %%  a call to erlang:error(Reason).
@@ -1258,16 +1194,15 @@ clause(#c_clause{pats=Ps0}=Cl, Cexpr, Ctxt, Sub0) ->
     end.
 
 clause_1(#c_clause{guard=G0,body=B0}=Cl, Ps1, Cexpr, Ctxt, Sub1) ->
-    Sub2 = update_types(Cexpr, Ps1, Sub1),
     GSub = case {Cexpr,Ps1,G0} of
 	       {_,_,#c_literal{}} ->
 		   %% No need for substitution tricks when the guard
 		   %% does not contain any variables.
-		   Sub2;
+		   Sub1;
 	       {#c_var{name='_'},_,_} ->
 		   %% In a 'receive', Cexpr is the variable '_', which represents the
 		   %% message being matched. We must NOT do any extra substiutions.
-		   Sub2;
+		   Sub1;
 	       {#c_var{},[#c_var{}=Var],_} ->
 		   %% The idea here is to optimize expressions such as
 		   %%
@@ -1289,16 +1224,16 @@ clause_1(#c_clause{guard=G0,body=B0}=Cl, Ps1, Cexpr, Ctxt, Sub1) ->
 		   %%
 		   case cerl:is_c_fname(Cexpr) of
 		       false ->
-			   sub_set_var(Var, Cexpr, Sub2);
+			   sub_set_var(Var, Cexpr, Sub1);
 		       true ->
 			   %% We must not copy funs, and especially not into guards.
-			   Sub2
+			   Sub1
 		   end;
 	       _ ->
-		   Sub2
+		   Sub1
 	   end,
     G1 = guard(G0, GSub),
-    B1 = body(B0, Ctxt, Sub2),
+    B1 = body(B0, Ctxt, Sub1),
     Cl#c_clause{pats=Ps1,guard=G1,body=B1}.
 
 %% let_substs(LetVars, LetArg, Sub) -> {[Var],[Val],Sub}.
@@ -1382,8 +1317,7 @@ pattern(#c_binary{segments=V0}=Pat, Isub, Osub0) ->
     {Pat#c_binary{segments=V1},Osub1};
 pattern(#c_alias{var=V0,pat=P0}=Pat, Isub, Osub0) ->
     {V1,Osub1} = pattern(V0, Isub, Osub0),
-    {P1,Osub2} = pattern(P0, Isub, Osub1),
-    Osub = update_types(V1, [P1], Osub2),
+    {P1,Osub} = pattern(P0, Isub, Osub1),
     {Pat#c_alias{var=V1,pat=P1},Osub}.
 
 map_pair_pattern_list(Ps0, Isub, Osub0) ->
@@ -2063,58 +1997,22 @@ case_opt_compiler_generated(Core) ->
 
 
 %% case_expand_var(Expr0, Sub) -> Expr
-%%  If Expr0 is a variable that has been previously matched and
-%%  is known to be a tuple, return the tuple instead. Otherwise
+%%  If Expr0 is a variable that is known to be bound to a
+%%  constructed tuple, return the tuple instead. Otherwise
 %%  return Expr0 unchanged.
-%%
+
 case_expand_var(E, #sub{t=Tdb}) ->
     Key = cerl:var_name(E),
     case Tdb of
-        #{Key:=T0} ->
-	    case cerl:is_c_tuple(T0) of
-		false ->
-		    E;
-		true ->
-		    %% The pattern was a tuple. Now we must make sure
-		    %% that the elements of the tuple are suitable. In
-		    %% particular, we don't want binary or map
-		    %% construction here, since that means that the
-		    %% binary or map will be constructed in the 'case'
-		    %% argument. That is wasteful for binaries. Even
-		    %% worse is that any map pattern that use the ':='
-		    %% operator will fail when used in map
-		    %% construction (only the '=>' operator is allowed
-		    %% when constructing a map from scratch).
-		    try
-			cerl_trees:map(fun coerce_to_data/1, T0)
-		    catch
-			throw:impossible ->
-			    %% Something unsuitable was found (map or
-			    %% or binary). Keep the variable.
-			    E
-		    end
+        #{Key:=T} ->
+	    case cerl:is_c_tuple(T) of
+		false -> E;
+		true -> T
 	    end;
         _ ->
 	    E
     end.
 
-%% coerce_to_data(Core) -> Core'
-%%  Coerce an element originally from a pattern to an data item or or
-%%  variable. Throw an 'impossible' exception if non-data Core Erlang
-%%  terms such as binary construction or map construction are
-%%  encountered.
-
-coerce_to_data(C) ->
-    case cerl:is_c_alias(C) of
-	false ->
-	    case cerl:is_data(C) orelse cerl:is_c_var(C) of
-		true -> C;
-		false -> throw(impossible)
-	    end;
-	true ->
-	    coerce_to_data(cerl:alias_pat(C))
-    end.
-
 %% case_opt_nomatch(E, Clauses, LitExpr) -> Clauses'
 %%  Remove all clauses that cannot possibly match.
 
@@ -3108,14 +3006,6 @@ is_int_type(Var, Sub) ->
 	C -> yes_no(cerl:is_c_int(C))
     end.
 
--spec is_tuple_type(cerl:cerl(), sub()) -> yes_no_maybe().
-
-is_tuple_type(Var, Sub) ->
-    case get_type(Var, Sub) of
-	none -> maybe;
-	C -> yes_no(cerl:is_c_tuple(C))
-    end.
-
 yes_no(true) -> yes;
 yes_no(false) -> no.
 
@@ -3177,23 +3067,23 @@ returns_integer(_, _) -> false.
 %% update_types(Expr, Pattern, Sub) -> Sub'
 %%  Update the type database.
 
--spec update_types(cerl:cerl(), [type_info()], sub()) -> sub().
+-spec update_types(cerl:c_var(), [type_info()], sub()) -> sub().
 
-update_types(Expr, Pat, #sub{t=Tdb0}=Sub) ->
-    Tdb = update_types_1(Expr, Pat, Tdb0),
+update_types(#c_var{name=V}, Pat, #sub{t=Tdb0}=Sub) ->
+    Tdb = update_types_1(V, Pat, Tdb0),
     Sub#sub{t=Tdb}.
 
-update_types_1(#c_var{name=V}, Pat, Types) ->
-    update_types_2(V, Pat, Types);
-update_types_1(_, _, Types) -> Types.
-
-update_types_2(V, [#c_tuple{}=P], Types) ->
+update_types_1(V, [#c_tuple{}=P], Types) ->
     Types#{V=>P};
-update_types_2(V, [#c_literal{val=Bool}], Types) when is_boolean(Bool) ->
+update_types_1(V, [#c_literal{val=Bool}], Types) when is_boolean(Bool) ->
     Types#{V=>bool};
-update_types_2(V, [Type], Types) when is_atom(Type) ->
+update_types_1(V, [#c_fun{vars=Vars}], Types) ->
+    Types#{V=>{'fun',length(Vars)}};
+update_types_1(V, [#c_var{name={_,Arity}}], Types) ->
+    Types#{V=>{'fun',Arity}};
+update_types_1(V, [Type], Types) when is_atom(Type) ->
     Types#{V=>Type};
-update_types_2(_, _, Types) -> Types.
+update_types_1(_, _, Types) -> Types.
 
 %% kill_types(V, Tdb) -> Tdb'
 %%  Kill any entries that references the variable,
@@ -3209,6 +3099,8 @@ kill_types2(V, [{_,#c_tuple{}=Tuple}=Entry|Tdb]) ->
 	false -> [Entry|kill_types2(V, Tdb)];
 	true -> kill_types2(V, Tdb)
     end;
+kill_types2(V, [{_, {'fun',_}}=Entry|Tdb]) ->
+    [Entry|kill_types2(V, Tdb)];
 kill_types2(V, [{_,Atom}=Entry|Tdb]) when is_atom(Atom) ->
     [Entry|kill_types2(V, Tdb)];
 kill_types2(_, []) -> [].
diff --git a/lib/compiler/src/sys_core_fold_lists.erl b/lib/compiler/src/sys_core_fold_lists.erl
index 9867fab46a..e93b435011 100644
--- a/lib/compiler/src/sys_core_fold_lists.erl
+++ b/lib/compiler/src/sys_core_fold_lists.erl
@@ -37,22 +37,27 @@ call(#c_call{anno=Anno}, lists, all, [Arg1,Arg2]) ->
     Xs = #c_var{name='Xs'},
     X = #c_var{name='X'},
     Err1 = #c_tuple{es=[#c_literal{val='case_clause'}, X]},
-    CC1 = #c_clause{pats=[#c_literal{val=true}], guard=#c_literal{val=true},
+    CC1 = #c_clause{anno=Anno,
+                    pats=[#c_literal{val=true}], guard=#c_literal{val=true},
 		    body=#c_apply{anno=Anno, op=Loop, args=[Xs]}},
-    CC2 = #c_clause{pats=[#c_literal{val=false}], guard=#c_literal{val=true},
+    CC2 = #c_clause{anno=Anno,
+                    pats=[#c_literal{val=false}], guard=#c_literal{val=true},
 		    body=#c_literal{val=false}},
-    CC3 = #c_clause{pats=[X], guard=#c_literal{val=true},
+    CC3 = #c_clause{anno=Anno,
+                    pats=[X], guard=#c_literal{val=true},
 		    body=match_fail(Anno, Err1)},
-    C1 = #c_clause{pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
+    C1 = #c_clause{anno=Anno,
+                   pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
 		   body=#c_case{arg=#c_apply{anno=Anno, op=F, args=[X]},
 				clauses = [CC1, CC2, CC3]}},
-    C2 = #c_clause{pats=[#c_literal{val=[]}],
+    C2 = #c_clause{anno=Anno,
+                   pats=[#c_literal{val=[]}],
 		   guard=#c_call{module=#c_literal{val=erlang},
 				 name=#c_literal{val=is_function},
 				 args=[F, #c_literal{val=1}]},
 		   body=#c_literal{val=true}},
     Err2 = #c_tuple{es=[#c_literal{val='function_clause'}, F, Xs]},
-    C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true},
+    C3 = #c_clause{anno=Anno, pats=[Xs], guard=#c_literal{val=true},
 		   body=match_fail([{function_name,{'lists^all',1}}|Anno], Err2)},
     Fun = #c_fun{vars=[Xs],
 		 body=#c_case{arg=Xs, clauses=[C1, C2, C3]}},
@@ -66,16 +71,21 @@ call(#c_call{anno=Anno}, lists, any, [Arg1,Arg2]) ->
     Xs = #c_var{name='Xs'},
     X = #c_var{name='X'},
     Err1 = #c_tuple{es=[#c_literal{val='case_clause'}, X]},
-    CC1 = #c_clause{pats=[#c_literal{val=true}], guard=#c_literal{val=true},
+    CC1 = #c_clause{anno=Anno,
+                    pats=[#c_literal{val=true}], guard=#c_literal{val=true},
 		    body=#c_literal{val=true}},
-    CC2 = #c_clause{pats=[#c_literal{val=false}], guard=#c_literal{val=true},
+    CC2 = #c_clause{anno=Anno,
+                    pats=[#c_literal{val=false}], guard=#c_literal{val=true},
 		    body=#c_apply{anno=Anno, op=Loop, args=[Xs]}},
-    CC3 = #c_clause{pats=[X], guard=#c_literal{val=true},
+    CC3 = #c_clause{anno=Anno,
+                    pats=[X], guard=#c_literal{val=true},
 		    body=match_fail(Anno, Err1)},
-    C1 = #c_clause{pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
+    C1 = #c_clause{anno=Anno,
+                   pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
 		   body=#c_case{arg=#c_apply{anno=Anno, op=F, args=[X]},
 				clauses = [CC1, CC2, CC3]}},
-    C2 = #c_clause{pats=[#c_literal{val=[]}],
+    C2 = #c_clause{anno=Anno,
+                   pats=[#c_literal{val=[]}],
 		   guard=#c_call{module=#c_literal{val=erlang},
 				 name=#c_literal{val=is_function},
 				 args=[F, #c_literal{val=1}]},
@@ -94,16 +104,17 @@ call(#c_call{anno=Anno}, lists, foreach, [Arg1,Arg2]) ->
     F = #c_var{name='F'},
     Xs = #c_var{name='Xs'},
     X = #c_var{name='X'},
-    C1 = #c_clause{pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
+    C1 = #c_clause{anno=Anno,
+                   pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
 		   body=#c_seq{arg=#c_apply{anno=Anno, op=F, args=[X]},
 			       body=#c_apply{anno=Anno, op=Loop, args=[Xs]}}},
-    C2 = #c_clause{pats=[#c_literal{val=[]}],
+    C2 = #c_clause{anno=Anno, pats=[#c_literal{val=[]}],
 		   guard=#c_call{module=#c_literal{val=erlang},
 				 name=#c_literal{val=is_function},
 				 args=[F, #c_literal{val=1}]},
 		   body=#c_literal{val=ok}},
     Err = #c_tuple{es=[#c_literal{val='function_clause'}, F, Xs]},
-    C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true},
+    C3 = #c_clause{anno=Anno, pats=[Xs], guard=#c_literal{val=true},
 		   body=match_fail([{function_name,{'lists^foreach',1}}|Anno], Err)},
     Fun = #c_fun{vars=[Xs],
 		 body=#c_case{arg=Xs, clauses=[C1, C2, C3]}},
@@ -117,7 +128,8 @@ call(#c_call{anno=Anno}, lists, map, [Arg1,Arg2]) ->
     Xs = #c_var{name='Xs'},
     X = #c_var{name='X'},
     H = #c_var{name='H'},
-    C1 = #c_clause{pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
+    C1 = #c_clause{anno=Anno,
+                   pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
 		   body=#c_let{vars=[H], arg=#c_apply{anno=Anno,
 						      op=F,
 						      args=[X]},
@@ -126,7 +138,7 @@ call(#c_call{anno=Anno}, lists, map, [Arg1,Arg2]) ->
 					    tl=#c_apply{anno=Anno,
 							op=Loop,
 							args=[Xs]}}}},
-    C2 = #c_clause{pats=[#c_literal{val=[]}],
+    C2 = #c_clause{anno=Anno, pats=[#c_literal{val=[]}],
 		   guard=#c_call{module=#c_literal{val=erlang},
 				 name=#c_literal{val=is_function},
 				 args=[F, #c_literal{val=1}]},
@@ -146,7 +158,8 @@ call(#c_call{anno=Anno}, lists, flatmap, [Arg1,Arg2]) ->
     Xs = #c_var{name='Xs'},
     X = #c_var{name='X'},
     H = #c_var{name='H'},
-    C1 = #c_clause{pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
+    C1 = #c_clause{anno=Anno,
+                   pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
 		   body=#c_let{vars=[H],
 			       arg=#c_apply{anno=Anno, op=F, args=[X]},
 			       body=#c_call{anno=[compiler_generated|Anno],
@@ -156,13 +169,13 @@ call(#c_call{anno=Anno}, lists, flatmap, [Arg1,Arg2]) ->
 						  #c_apply{anno=Anno,
 							   op=Loop,
 							   args=[Xs]}]}}},
-    C2 = #c_clause{pats=[#c_literal{val=[]}],
+    C2 = #c_clause{anno=Anno, pats=[#c_literal{val=[]}],
 		   guard=#c_call{module=#c_literal{val=erlang},
 				 name=#c_literal{val=is_function},
 				 args=[F, #c_literal{val=1}]},
 		   body=#c_literal{val=[]}},
     Err = #c_tuple{es=[#c_literal{val='function_clause'}, F, Xs]},
-    C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true},
+    C3 = #c_clause{anno=Anno, pats=[Xs], guard=#c_literal{val=true},
 		   body=match_fail([{function_name,{'lists^flatmap',1}}|Anno], Err)},
     Fun = #c_fun{vars=[Xs],
 		 body=#c_case{arg=Xs, clauses=[C1, C2, C3]}},
@@ -177,11 +190,13 @@ call(#c_call{anno=Anno}, lists, filter, [Arg1,Arg2]) ->
     X = #c_var{name='X'},
     B = #c_var{name='B'},
     Err1 = #c_tuple{es=[#c_literal{val='case_clause'}, X]},
-    CC1 = #c_clause{pats=[#c_literal{val=true}], guard=#c_literal{val=true},
+    CC1 = #c_clause{anno=Anno,
+                    pats=[#c_literal{val=true}], guard=#c_literal{val=true},
 		    body=#c_cons{anno=[compiler_generated], hd=X, tl=Xs}},
-    CC2 = #c_clause{pats=[#c_literal{val=false}], guard=#c_literal{val=true},
+    CC2 = #c_clause{anno=Anno,
+                    pats=[#c_literal{val=false}], guard=#c_literal{val=true},
 		    body=Xs},
-    CC3 = #c_clause{pats=[X], guard=#c_literal{val=true},
+    CC3 = #c_clause{anno=Anno, pats=[X], guard=#c_literal{val=true},
 		    body=match_fail(Anno, Err1)},
     Case = #c_case{arg=B, clauses = [CC1, CC2, CC3]},
     C1 = #c_clause{pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
@@ -192,13 +207,15 @@ call(#c_call{anno=Anno}, lists, filter, [Arg1,Arg2]) ->
 							op=Loop,
 							args=[Xs]},
 					   body=Case}}},
-    C2 = #c_clause{pats=[#c_literal{val=[]}],
+    C2 = #c_clause{anno=Anno,
+                   pats=[#c_literal{val=[]}],
 		   guard=#c_call{module=#c_literal{val=erlang},
 				 name=#c_literal{val=is_function},
 				 args=[F, #c_literal{val=1}]},
 		   body=#c_literal{val=[]}},
     Err2 = #c_tuple{es=[#c_literal{val='function_clause'}, F, Xs]},
-    C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true},
+    C3 = #c_clause{anno=Anno,
+                   pats=[Xs], guard=#c_literal{val=true},
 		   body=match_fail([{function_name,{'lists^filter',1}}|Anno], Err2)},
     Fun = #c_fun{vars=[Xs],
 		 body=#c_case{arg=Xs, clauses=[C1, C2, C3]}},
@@ -212,19 +229,20 @@ call(#c_call{anno=Anno}, lists, foldl, [Arg1,Arg2,Arg3]) ->
     Xs = #c_var{name='Xs'},
     X = #c_var{name='X'},
     A = #c_var{name='A'},
-    C1 = #c_clause{pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
+    C1 = #c_clause{anno=Anno,
+                   pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
 		   body=#c_apply{anno=Anno,
 				 op=Loop,
 				 args=[Xs, #c_apply{anno=Anno,
 						    op=F,
 						    args=[X, A]}]}},
-    C2 = #c_clause{pats=[#c_literal{val=[]}],
+    C2 = #c_clause{anno=Anno, pats=[#c_literal{val=[]}],
 		   guard=#c_call{module=#c_literal{val=erlang},
 				 name=#c_literal{val=is_function},
 				 args=[F, #c_literal{val=2}]},
 		   body=A},
     Err = #c_tuple{es=[#c_literal{val='function_clause'}, F, A, Xs]},
-    C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true},
+    C3 = #c_clause{anno=Anno, pats=[Xs], guard=#c_literal{val=true},
 		   body=match_fail([{function_name,{'lists^foldl',2}}|Anno], Err)},
     Fun = #c_fun{vars=[Xs, A],
 		 body=#c_case{arg=Xs, clauses=[C1, C2, C3]}},
@@ -238,19 +256,20 @@ call(#c_call{anno=Anno}, lists, foldr, [Arg1,Arg2,Arg3]) ->
     Xs = #c_var{name='Xs'},
     X = #c_var{name='X'},
     A = #c_var{name='A'},
-    C1 = #c_clause{pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
+    C1 = #c_clause{anno=Anno,
+                   pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
 		   body=#c_apply{anno=Anno,
 				 op=F,
 				 args=[X, #c_apply{anno=Anno,
 						   op=Loop,
 						   args=[Xs, A]}]}},
-    C2 = #c_clause{pats=[#c_literal{val=[]}],
+    C2 = #c_clause{anno=Anno, pats=[#c_literal{val=[]}],
 		   guard=#c_call{module=#c_literal{val=erlang},
 				 name=#c_literal{val=is_function},
 				 args=[F, #c_literal{val=2}]},
 		   body=A},
     Err = #c_tuple{es=[#c_literal{val='function_clause'}, F, A, Xs]},
-    C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true},
+    C3 = #c_clause{anno=Anno, pats=[Xs], guard=#c_literal{val=true},
 		   body=match_fail([{function_name,{'lists^foldr',2}}|Anno], Err)},
     Fun = #c_fun{vars=[Xs, A],
 		 body=#c_case{arg=Xs, clauses=[C1, C2, C3]}},
@@ -266,13 +285,14 @@ call(#c_call{anno=Anno}, lists, mapfoldl, [Arg1,Arg2,Arg3]) ->
     Avar = #c_var{name='A'},
     Match =
 	fun (A, P, E) ->
-		C1 = #c_clause{pats=[P], guard=#c_literal{val=true}, body=E},
+		C1 = #c_clause{anno=Anno, pats=[P], guard=#c_literal{val=true}, body=E},
 		Err = #c_tuple{es=[#c_literal{val='badmatch'}, X]},
-		C2 = #c_clause{pats=[X], guard=#c_literal{val=true},
+		C2 = #c_clause{anno=Anno, pats=[X], guard=#c_literal{val=true},
 			       body=match_fail(Anno, Err)},
 		#c_case{arg=A, clauses=[C1, C2]}
 	end,
-    C1 = #c_clause{pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
+    C1 = #c_clause{anno=Anno,
+                   pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
 		   body=Match(#c_apply{anno=Anno, op=F, args=[X, Avar]},
 			      #c_tuple{es=[X, Avar]},
 %%% Tuple passing version
@@ -292,7 +312,7 @@ call(#c_call{anno=Anno}, lists, mapfoldl, [Arg1,Arg2,Arg3]) ->
 %%% 				     body=#c_values{es=[#c_cons{hd=X, tl=Xs},
 %%% 							A]}}
 			     )},
-    C2 = #c_clause{pats=[#c_literal{val=[]}],
+    C2 = #c_clause{anno=Anno, pats=[#c_literal{val=[]}],
 		   guard=#c_call{module=#c_literal{val=erlang},
 				 name=#c_literal{val=is_function},
 				 args=[F, #c_literal{val=2}]},
@@ -302,7 +322,7 @@ call(#c_call{anno=Anno}, lists, mapfoldl, [Arg1,Arg2,Arg3]) ->
 %%% Multiple-value version
 %%% 		   body=#c_values{es=[#c_literal{val=[]}, A]}},
     Err = #c_tuple{es=[#c_literal{val='function_clause'}, F, Avar, Xs]},
-    C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true},
+    C3 = #c_clause{anno=Anno, pats=[Xs], guard=#c_literal{val=true},
 		   body=match_fail([{function_name,{'lists^mapfoldl',2}}|Anno], Err)},
     Fun = #c_fun{vars=[Xs, Avar],
 		 body=#c_case{arg=Xs, clauses=[C1, C2, C3]}},
@@ -326,13 +346,13 @@ call(#c_call{anno=Anno}, lists, mapfoldr, [Arg1,Arg2,Arg3]) ->
     Avar = #c_var{name='A'},
     Match =
 	fun (A, P, E) ->
-		C1 = #c_clause{pats=[P], guard=#c_literal{val=true}, body=E},
+		C1 = #c_clause{anno=Anno, pats=[P], guard=#c_literal{val=true}, body=E},
 		Err = #c_tuple{es=[#c_literal{val='badmatch'}, X]},
-		C2 = #c_clause{pats=[X], guard=#c_literal{val=true},
+		C2 = #c_clause{anno=Anno, pats=[X], guard=#c_literal{val=true},
 			       body=match_fail(Anno, Err)},
 		#c_case{arg=A, clauses=[C1, C2]}
 	end,
-    C1 = #c_clause{pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
+    C1 = #c_clause{anno=Anno, pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
 %%% Tuple passing version
 		   body=Match(#c_apply{anno=Anno,
 				       op=Loop,
@@ -352,7 +372,8 @@ call(#c_call{anno=Anno}, lists, mapfoldr, [Arg1,Arg2,Arg3]) ->
 %%% 					  #c_values{es=[#c_cons{hd=X, tl=Xs},
 %%% 						        A]})}
 		  },
-    C2 = #c_clause{pats=[#c_literal{val=[]}],
+    C2 = #c_clause{anno=Anno,
+                   pats=[#c_literal{val=[]}],
 		   guard=#c_call{module=#c_literal{val=erlang},
 				 name=#c_literal{val=is_function},
 				 args=[F, #c_literal{val=2}]},
@@ -362,7 +383,7 @@ call(#c_call{anno=Anno}, lists, mapfoldr, [Arg1,Arg2,Arg3]) ->
 %%% Multiple-value version
 %%% 		   body=#c_values{es=[#c_literal{val=[]}, A]}},
     Err = #c_tuple{es=[#c_literal{val='function_clause'}, F, Avar, Xs]},
-    C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true},
+    C3 = #c_clause{anno=Anno, pats=[Xs], guard=#c_literal{val=true},
 		   body=match_fail([{function_name,{'lists^mapfoldr',2}}|Anno], Err)},
     Fun = #c_fun{vars=[Xs, Avar],
 		 body=#c_case{arg=Xs, clauses=[C1, C2, C3]}},
diff --git a/lib/compiler/src/sys_core_inline.erl b/lib/compiler/src/sys_core_inline.erl
index 5a6cc45e4a..3380e3f1bd 100644
--- a/lib/compiler/src/sys_core_inline.erl
+++ b/lib/compiler/src/sys_core_inline.erl
@@ -195,6 +195,9 @@ kill_id_anns(Body) ->
     cerl_trees:map(fun(#c_fun{anno=A0}=CFun) ->
 			   A = kill_id_anns_1(A0),
 			   CFun#c_fun{anno=A};
+                      (#c_var{anno=A0}=Var) ->
+			   A = kill_id_anns_1(A0),
+			   Var#c_var{anno=A};
 		      (Expr) ->
 			   %% Mark everything as compiler generated to
 			   %% suppress bogus warnings.
diff --git a/lib/compiler/src/v3_codegen.erl b/lib/compiler/src/v3_codegen.erl
deleted file mode 100644
index e9152ba88f..0000000000
--- a/lib/compiler/src/v3_codegen.erl
+++ /dev/null
@@ -1,2925 +0,0 @@
-%%
-%% %CopyrightBegin%
-%%
-%% Copyright Ericsson AB 1999-2018. All Rights Reserved.
-%%
-%% Licensed under the Apache License, Version 2.0 (the "License");
-%% you may not use this file except in compliance with the License.
-%% You may obtain a copy of the License at
-%%
-%%     http://www.apache.org/licenses/LICENSE-2.0
-%%
-%% Unless required by applicable law or agreed to in writing, software
-%% distributed under the License is distributed on an "AS IS" BASIS,
-%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-%% See the License for the specific language governing permissions and
-%% limitations under the License.
-%%
-%% %CopyrightEnd%
-%%
-%% Purpose : Code generator for Beam.
-
--module(v3_codegen).
-
-%% The main interface.
--export([module/2]).
-
--import(lists, [member/2,keymember/3,keysort/2,keydelete/3,
-		append/1,flatmap/2,filter/2,foldl/3,foldr/3,mapfoldl/3,
-		sort/1,reverse/1,reverse/2,map/2]).
--import(ordsets, [add_element/2,intersection/2,union/2]).
-
--include("v3_kernel.hrl").
-
-%% These are not defined in v3_kernel.hrl.
-get_kanno(Kthing) -> element(2, Kthing).
-set_kanno(Kthing, Anno) -> setelement(2, Kthing, Anno).
-
-%% Main codegen structure.
--record(cg, {lcount=1,				%Label counter
-	     bfail,				%Fail label for BIFs
-	     break,				%Break label
-	     recv,				%Receive label
-	     is_top_block,			%Boolean: top block or not
-	     functable=#{},	                %Map of local functions: {Name,Arity}=>Label
-	     in_catch=false,			%Inside a catch or not.
-	     need_frame,			%Need a stack frame.
-	     ultimate_failure,			%Label for ultimate match failure.
-             ctx                                %Match context.
-	    }).
-
-%% Stack/register state record.
--record(sr, {reg=[],				%Register table
-	     stk=[],				%Stack table
-	     res=[]}).				%Registers to reserve
-
-%% Internal records.
--record(cg_need_heap, {anno=[] :: term(),
-                       h=0 :: integer()}).
--record(cg_block, {anno=[] :: term(),
-                   es=[] :: [term()]}).
-
--type vdb_entry() :: {atom(),non_neg_integer(),non_neg_integer()}.
-
--record(l, {i=0 :: non_neg_integer(),           %Op number
-	    vdb=[] :: [vdb_entry()],            %Variable database
-	    a=[] :: [term()]}).                 %Core annotation
-
--spec module(#k_mdef{}, [compile:option()]) -> {'ok',beam_asm:module_code()}.
-
-module(#k_mdef{name=Mod,exports=Es,attributes=Attr,body=Forms}, _Opts) ->
-    {Asm,St} = functions(Forms, {atom,Mod}),
-    {ok,{Mod,Es,Attr,Asm,St#cg.lcount}}.
-
-functions(Forms, AtomMod) ->
-    mapfoldl(fun (F, St) -> function(F, AtomMod, St) end, #cg{lcount=1}, Forms).
-
-function(#k_fdef{anno=#k{a=Anno},func=Name,arity=Arity,
-                 vars=As,body=Kb}, AtomMod, St0) ->
-    try
-        #k_match{} = Kb,                   %Assertion.
-
-        %% Try to suppress the stack frame unless it is
-        %% really needed.
-        Body0 = avoid_stack_frame(Kb),
-
-        %% Annotate kernel records with variable usage.
-        Vdb0 = init_vars(As),
-        {Body,_,Vdb} = body(Body0, 1, Vdb0),
-
-        %% Generate the BEAM assembly code.
-        {Asm,EntryLabel,St} = cg_fun(Body, As, Vdb, AtomMod,
-                                     {Name,Arity}, Anno, St0),
-        Func = {function,Name,Arity,EntryLabel,Asm},
-        {Func,St}
-    catch
-        Class:Error:Stack ->
-            io:fwrite("Function: ~w/~w\n", [Name,Arity]),
-            erlang:raise(Class, Error, Stack)
-    end.
-
-
-%% avoid_stack_frame(Kernel) -> Kernel'
-%%  If possible, avoid setting up a stack frame. Functions
-%%  that only do matching, calls to guard BIFs, and tail-recursive
-%%  calls don't need a stack frame.
-
-avoid_stack_frame(#k_match{body=Body}=M) ->
-    try
-        M#k_match{body=avoid_stack_frame_1(Body)}
-    catch
-        impossible ->
-            M
-    end.
-
-avoid_stack_frame_1(#k_alt{first=First0,then=Then0}=Alt) ->
-    First = avoid_stack_frame_1(First0),
-    Then = avoid_stack_frame_1(Then0),
-    Alt#k_alt{first=First,then=Then};
-avoid_stack_frame_1(#k_bif{op=Op}=Bif) ->
-    case Op of
-        #k_internal{} ->
-            %% Most internal BIFs clobber the X registers.
-            throw(impossible);
-        _ ->
-            Bif
-    end;
-avoid_stack_frame_1(#k_break{anno=Anno,args=Args}) ->
-    #k_guard_break{anno=Anno,args=Args};
-avoid_stack_frame_1(#k_guard_break{}=Break) ->
-    Break;
-avoid_stack_frame_1(#k_enter{}=Enter) ->
-    %% Tail-recursive calls don't need a stack frame.
-    Enter;
-avoid_stack_frame_1(#k_guard{clauses=Cs0}=Guard) ->
-    Cs = avoid_stack_frame_list(Cs0),
-    Guard#k_guard{clauses=Cs};
-avoid_stack_frame_1(#k_guard_clause{guard=G0,body=B0}=C) ->
-    G = avoid_stack_frame_1(G0),
-    B = avoid_stack_frame_1(B0),
-    C#k_guard_clause{guard=G,body=B};
-avoid_stack_frame_1(#k_match{anno=A,vars=Vs,body=B0,ret=Ret}) ->
-    %% Use #k_guard_match{} instead to avoid saving the X registers
-    %% to the stack before matching.
-    B = avoid_stack_frame_1(B0),
-    #k_guard_match{anno=A,vars=Vs,body=B,ret=Ret};
-avoid_stack_frame_1(#k_guard_match{body=B0}=M) ->
-    B = avoid_stack_frame_1(B0),
-    M#k_guard_match{body=B};
-avoid_stack_frame_1(#k_protected{arg=Arg0}=Prot) ->
-    Arg = avoid_stack_frame_1(Arg0),
-    Prot#k_protected{arg=Arg};
-avoid_stack_frame_1(#k_put{}=Put) ->
-    Put;
-avoid_stack_frame_1(#k_return{}=Ret) ->
-    Ret;
-avoid_stack_frame_1(#k_select{var=#k_var{anno=Vanno},types=Types0}=Select) ->
-    case member(reuse_for_context, Vanno) of
-        false ->
-            Types = avoid_stack_frame_list(Types0),
-            Select#k_select{types=Types};
-        true ->
-            %% Including binary patterns that overwrite the register containing
-            %% the binary with the match context may not be safe. For example,
-            %% bs_match_SUITE:bin_tail_e/1 with inlining will be rejected by
-            %% beam_validator.
-            %%
-            %% Essentially the following code is produced:
-            %%
-            %% bs_match {x,0} => {x,0}
-            %% ...
-            %% bs_match {x,0} => {x,1}  %% ILLEGAL
-            %%
-            %% A bs_match instruction will only accept a match context as the
-            %% source operand if the source and destination registers are the
-            %% the same (as in the first bs_match instruction above).
-            %% The second bs_match instruction is therefore illegal.
-            %%
-            %% This situation is avoided if there is a stack frame:
-            %%
-            %% move {x,0} => {y,0}
-            %% bs_match {x,0} => {x,0}
-            %% ...
-            %% bs_match {y,0} => {x,1}  %% LEGAL
-            %%
-            throw(impossible)
-    end;
-avoid_stack_frame_1(#k_seq{arg=#k_call{anno=Anno,op=Op}=Call,
-                           body=#k_break{args=BrArgs0}}=Seq) ->
-    case Op of
-        #k_remote{mod=#k_atom{val=Mod},
-                  name=#k_atom{val=Name},
-                  arity=Arity} ->
-            case erl_bifs:is_exit_bif(Mod, Name, Arity) of
-                false ->
-                    %% Will clobber X registers. Must have a stack frame.
-                    throw(impossible);
-                true ->
-                    %% The call to this BIF will never return. It is safe
-                    %% to suppress the stack frame.
-                    Bif = #k_bif{anno=Anno,
-                                 op=#k_internal{name=guard_error,arity=1},
-                                 args=[Call],ret=[]},
-                    BrArgs = lists:duplicate(length(BrArgs0), #k_nil{}),
-                    GB = #k_guard_break{anno=#k{us=[],ns=[],a=[]},args=BrArgs},
-                    Seq#k_seq{arg=Bif,body=GB}
-            end;
-        _ ->
-            %% Will clobber X registers. Must have a stack frame.
-            throw(impossible)
-    end;
-avoid_stack_frame_1(#k_seq{arg=A0,body=B0}=Seq) ->
-    A = avoid_stack_frame_1(A0),
-    B = avoid_stack_frame_1(B0),
-    Seq#k_seq{arg=A,body=B};
-avoid_stack_frame_1(#k_test{}=Test) ->
-    Test;
-avoid_stack_frame_1(#k_type_clause{values=Values0}=TC) ->
-    Values = avoid_stack_frame_list(Values0),
-    TC#k_type_clause{values=Values};
-avoid_stack_frame_1(#k_val_clause{body=B0}=VC) ->
-    B = avoid_stack_frame_1(B0),
-    VC#k_val_clause{body=B};
-avoid_stack_frame_1(_Body) ->
-    throw(impossible).
-
-avoid_stack_frame_list([H|T]) ->
-    [avoid_stack_frame_1(H)|avoid_stack_frame_list(T)];
-avoid_stack_frame_list([]) -> [].
-
-
-%% This pass creates beam format annotated with variable lifetime
-%% information.  Each thing is given an index and for each variable we
-%% store the first and last index for its occurrence.  The variable
-%% database, VDB, attached to each thing is only relevant internally
-%% for that thing.
-%%
-%% For nested things like matches the numbering continues locally and
-%% the VDB for that thing refers to the variable usage within that
-%% thing.  Variables which live through a such a thing are internally
-%% given a very large last index.  Internally the indexes continue
-%% after the index of that thing.  This creates no problems as the
-%% internal variable info never escapes and externally we only see
-%% variable which are alive both before or after.
-%%
-%% This means that variables never "escape" from a thing and the only
-%% way to get values from a thing is to "return" them, with 'break' or
-%% 'return'.  Externally these values become the return values of the
-%% thing.  This is no real limitation as most nested things have
-%% multiple threads so working out a common best variable usage is
-%% difficult.
-
-%% body(Kbody, I, Vdb) -> {[Expr],MaxI,Vdb}.
-%%  Handle a body.
-
-body(#k_seq{arg=Ke,body=Kb}, I, Vdb0) ->
-    %%ok = io:fwrite("life ~w:~p~n", [?LINE,{Ke,I,Vdb0}]),
-    A = get_kanno(Ke),
-    Vdb1 = use_vars(union(A#k.us, A#k.ns), I, Vdb0),
-    {Es,MaxI,Vdb2} = body(Kb, I+1, Vdb1),
-    E = expr(Ke, I, Vdb2),
-    {[E|Es],MaxI,Vdb2};
-body(Ke, I, Vdb0) ->
-    %%ok = io:fwrite("life ~w:~p~n", [?LINE,{Ke,I,Vdb0}]),
-    A = get_kanno(Ke),
-    Vdb1 = use_vars(union(A#k.us, A#k.ns), I, Vdb0),
-    E = expr(Ke, I, Vdb1),
-    {[E],I,Vdb1}.
-
-%% expr(Kexpr, I, Vdb) -> Expr.
-
-expr(#k_test{anno=A}=Test, I, _Vdb) ->
-    Test#k_test{anno=#l{i=I,a=A#k.a}};
-expr(#k_call{anno=A}=Call, I, _Vdb) ->
-    Call#k_call{anno=#l{i=I,a=A#k.a}};
-expr(#k_enter{anno=A}=Enter, I, _Vdb) ->
-    Enter#k_enter{anno=#l{i=I,a=A#k.a}};
-expr(#k_bif{anno=A}=Bif, I, _Vdb) ->
-    Bif#k_bif{anno=#l{i=I,a=A#k.a}};
-expr(#k_match{anno=A,body=Kb,ret=Rs}, I, Vdb) ->
-    %% Work out imported variables which need to be locked.
-    Mdb = vdb_sub(I, I+1, Vdb),
-    M = match(Kb, A#k.us, I+1, Mdb),
-    L = #l{i=I,vdb=use_vars(A#k.us, I+1, Mdb),a=A#k.a},
-    #k_match{anno=L,body=M,ret=Rs};
-expr(#k_guard_match{anno=A,body=Kb,ret=Rs}, I, Vdb) ->
-    %% Work out imported variables which need to be locked.
-    Mdb = vdb_sub(I, I+1, Vdb),
-    M = match(Kb, A#k.us, I+1, Mdb),
-    L = #l{i=I,vdb=use_vars(A#k.us, I+1, Mdb),a=A#k.a},
-    #k_guard_match{anno=L,body=M,ret=Rs};
-expr(#k_protected{}=Protected, I, Vdb) ->
-    protected(Protected, I, Vdb);
-expr(#k_try{anno=A,arg=Ka,vars=Vs,body=Kb,evars=Evs,handler=Kh}=Try, I, Vdb) ->
-    %% Lock variables that are alive before the catch and used afterwards.
-    %% Don't lock variables that are only used inside the try.
-    Tdb0 = vdb_sub(I, I+1, Vdb),
-    %% This is the tricky bit. Lock variables in Arg that are used in
-    %% the body and handler. Add try tag 'variable'.
-    Ab = get_kanno(Kb),
-    Ah = get_kanno(Kh),
-    Tdb1 = use_vars(union(Ab#k.us, Ah#k.us), I+3, Tdb0),
-    Tdb2 = vdb_sub(I, I+2, Tdb1),
-    Vnames = fun (Kvar) -> Kvar#k_var.name end,	%Get the variable names
-    {Aes,_,Adb} = body(Ka, I+2, add_var({catch_tag,I+1}, I+1, locked, Tdb2)),
-    {Bes,_,Bdb} = body(Kb, I+4, new_vars(sort(map(Vnames, Vs)), I+3, Tdb2)),
-    {Hes,_,Hdb} = body(Kh, I+4, new_vars(sort(map(Vnames, Evs)), I+3, Tdb2)),
-    L = #l{i=I,vdb=Tdb1,a=A#k.a},
-    Try#k_try{anno=L,
-              arg=#cg_block{es=Aes,anno=#l{i=I+1,vdb=Adb,a=[]}},
-              vars=Vs,body=#cg_block{es=Bes,anno=#l{i=I+3,vdb=Bdb,a=[]}},
-              evars=Evs,handler=#cg_block{es=Hes,anno=#l{i=I+3,vdb=Hdb,a=[]}}};
-expr(#k_try_enter{anno=A,arg=Ka,vars=Vs,body=Kb,evars=Evs,handler=Kh}, I, Vdb) ->
-    %% Lock variables that are alive before the catch and used afterwards.
-    %% Don't lock variables that are only used inside the try.
-    Tdb0 = vdb_sub(I, I+1, Vdb),
-    %% This is the tricky bit. Lock variables in Arg that are used in
-    %% the body and handler. Add try tag 'variable'.
-    Ab = get_kanno(Kb),
-    Ah = get_kanno(Kh),
-    Tdb1 = use_vars(union(Ab#k.us, Ah#k.us), I+3, Tdb0),
-    Tdb2 = vdb_sub(I, I+2, Tdb1),
-    Vnames = fun (Kvar) -> Kvar#k_var.name end,	%Get the variable names
-    {Aes,_,Adb} = body(Ka, I+2, add_var({catch_tag,I+1}, I+1, 1000000, Tdb2)),
-    {Bes,_,Bdb} = body(Kb, I+4, new_vars(sort(map(Vnames, Vs)), I+3, Tdb2)),
-    {Hes,_,Hdb} = body(Kh, I+4, new_vars(sort(map(Vnames, Evs)), I+3, Tdb2)),
-    L = #l{i=I,vdb=Tdb1,a=A#k.a},
-    #k_try_enter{anno=L,
-                 arg=#cg_block{es=Aes,anno=#l{i=I+1,vdb=Adb,a=[]}},
-                 vars=Vs,body=#cg_block{es=Bes,anno=#l{i=I+3,vdb=Bdb,a=[]}},
-                 evars=Evs,handler=#cg_block{es=Hes,anno=#l{i=I+3,vdb=Hdb,a=[]}}};
-expr(#k_catch{anno=A,body=Kb}=Catch, I, Vdb) ->
-    %% Lock variables that are alive before the catch and used afterwards.
-    %% Don't lock variables that are only used inside the catch.
-    %% Add catch tag 'variable'.
-    Cdb0 = vdb_sub(I, I+1, Vdb),
-    {Es,_,Cdb1} = body(Kb, I+1, add_var({catch_tag,I}, I, locked, Cdb0)),
-    L = #l{i=I,vdb=Cdb1,a=A#k.a},
-    Catch#k_catch{anno=L,body=#cg_block{es=Es}};
-expr(#k_receive{anno=A,var=V,body=Kb,action=Ka}=Recv, I, Vdb) ->
-    %% Work out imported variables which need to be locked.
-    Rdb = vdb_sub(I, I+1, Vdb),
-    M = match(Kb, add_element(V#k_var.name, A#k.us), I+1,
-              new_vars([V#k_var.name], I, Rdb)),
-    {Tes,_,Adb} = body(Ka, I+1, Rdb),
-    Le = #l{i=I,vdb=use_vars(A#k.us, I+1, Vdb),a=A#k.a},
-    Recv#k_receive{anno=Le,body=M,
-                   action=#cg_block{anno=#l{i=I+1,vdb=Adb,a=[]},es=Tes}};
-expr(#k_receive_accept{anno=A}, I, _Vdb) ->
-    #k_receive_accept{anno=#l{i=I,a=A#k.a}};
-expr(#k_receive_next{anno=A}, I, _Vdb) ->
-    #k_receive_next{anno=#l{i=I,a=A#k.a}};
-expr(#k_put{anno=A}=Put, I, _Vdb) ->
-    Put#k_put{anno=#l{i=I,a=A#k.a}};
-expr(#k_break{anno=A}=Break, I, _Vdb) ->
-    Break#k_break{anno=#l{i=I,a=A#k.a}};
-expr(#k_guard_break{anno=A}=Break, I, _Vdb) ->
-    Break#k_guard_break{anno=#l{i=I,a=A#k.a}};
-expr(#k_return{anno=A}=Ret, I, _Vdb) ->
-    Ret#k_return{anno=#l{i=I,a=A#k.a}}.
-
-%% protected(Kprotected, I, Vdb) -> Protected.
-%%  Only used in guards.
-
-protected(#k_protected{anno=A,arg=Ts}=Prot, I, Vdb) ->
-    %% Lock variables that are alive before try and used afterwards.
-    %% Don't lock variables that are only used inside the protected
-    %% expression.
-    Pdb0 = vdb_sub(I, I+1, Vdb),
-    {T,MaxI,Pdb1} = body(Ts, I+1, Pdb0),
-    Pdb2 = use_vars(A#k.ns, MaxI+1, Pdb1),	%Save "return" values
-    Prot#k_protected{arg=T,anno=#l{i=I,a=A#k.a,vdb=Pdb2}}.
-
-%% match(Kexpr, [LockVar], I, Vdb) -> Expr.
-%%  Convert match tree to old format.
-
-match(#k_alt{anno=A,first=Kf,then=Kt}, Ls, I, Vdb0) ->
-    Vdb1 = use_vars(union(A#k.us, Ls), I, Vdb0),
-    F = match(Kf, Ls, I+1, Vdb1),
-    T = match(Kt, Ls, I+1, Vdb1),
-    #k_alt{anno=[],first=F,then=T};
-match(#k_select{anno=A,types=Kts}=Select, Ls, I, Vdb0) ->
-    Vdb1 = use_vars(union(A#k.us, Ls), I, Vdb0),
-    Ts = [type_clause(Tc, Ls, I+1, Vdb1) || Tc <- Kts],
-    Select#k_select{anno=[],types=Ts};
-match(#k_guard{anno=A,clauses=Kcs}, Ls, I, Vdb0) ->
-    Vdb1 = use_vars(union(A#k.us, Ls), I, Vdb0),
-    Cs = [guard_clause(G, Ls, I+1, Vdb1) || G <- Kcs],
-    #k_guard{anno=[],clauses=Cs};
-match(Other, Ls, I, Vdb0) ->
-    Vdb1 = use_vars(Ls, I, Vdb0),
-    {B,_,Vdb2} = body(Other, I+1, Vdb1),
-    Le = #l{i=I,vdb=Vdb2,a=[]},
-    #cg_block{anno=Le,es=B}.
-
-type_clause(#k_type_clause{anno=A,type=T,values=Kvs}, Ls, I, Vdb0) ->
-    %%ok = io:format("life ~w: ~p~n", [?LINE,{T,Kvs}]),
-    Vdb1 = use_vars(union(A#k.us, Ls), I+1, Vdb0),
-    Vs = [val_clause(Vc, Ls, I+1, Vdb1) || Vc <- Kvs],
-    #k_type_clause{anno=[],type=T,values=Vs}.
-
-val_clause(#k_val_clause{anno=A,val=V,body=Kb}, Ls0, I, Vdb0) ->
-    New = (get_kanno(V))#k.ns,
-    Bus = (get_kanno(Kb))#k.us,
-    %%ok = io:format("Ls0 = ~p, Used=~p\n  New=~p, Bus=~p\n", [Ls0,Used,New,Bus]),
-    Ls1 = union(intersection(New, Bus), Ls0),	%Lock for safety
-    Vdb1 = use_vars(union(A#k.us, Ls1), I+1, new_vars(New, I, Vdb0)),
-    B = match(Kb, Ls1, I+1, Vdb1),
-    Le = #l{i=I,vdb=use_vars(Bus, I+1, Vdb1),a=A#k.a},
-    #k_val_clause{anno=Le,val=V,body=B}.
-
-guard_clause(#k_guard_clause{anno=A,guard=Kg,body=Kb}, Ls, I, Vdb0) ->
-    Vdb1 = use_vars(union(A#k.us, Ls), I+2, Vdb0),
-    Gdb = vdb_sub(I+1, I+2, Vdb1),
-    G = protected(Kg, I+1, Gdb),
-    B = match(Kb, Ls, I+2, Vdb1),
-    Le = #l{i=I,vdb=use_vars((get_kanno(Kg))#k.us, I+2, Vdb1),a=A#k.a},
-    #k_guard_clause{anno=Le,guard=G,body=B}.
-
-
-%% Here follows the code generator pass.
-%%
-%% The following assumptions have been made:
-%%
-%% 1. Matches, i.e. things with {match,M,Ret} wrappers, only return
-%% values; no variables are exported. If the match would have returned
-%% extra variables then these have been transformed to multiple return
-%% values.
-%%
-%% 2. All BIF's called in guards are gc-safe so there is no need to
-%% put thing on the stack in the guard.  While this would in principle
-%% work it would be difficult to keep track of the stack depth when
-%% trimming.
-%%
-%% The code generation uses variable lifetime information added by
-%% the previous pass to save variables, allocate registers and
-%% move registers to the stack when necessary.
-%%
-%% We try to use a consistent variable name scheme throughout.  The
-%% StackReg record is always called Bef,Int<n>,Aft.
-
-%% cg_fun([Lkexpr], [HeadVar], Vdb, State) -> {[Ainstr],State}
-
-cg_fun(Les, Hvs, Vdb, AtomMod, NameArity, Anno, St0) ->
-    {Fi,St1} = new_label(St0),			%FuncInfo label
-    {Fl,St2} = local_func_label(NameArity, St1),
-
-    %%
-    %% The pattern matching compiler (in v3_kernel) no longer
-    %% provides its own catch-all clause, because the 
-    %% call to erlang:exit/1 caused problem when cases were
-    %% used in guards. Therefore, there may be tests that
-    %% cannot fail (providing that there is not a bug in a
-    %% previous optimzation pass), but still need to provide
-    %% a label (there are instructions, such as is_tuple/2,
-    %% that do not allow {f,0}).
-    %%
-    %% We will generate an ultimate failure label and put it
-    %% at the end of function, followed by an 'if_end' instruction.
-    %% Note that and 'if_end' instruction does not need any
-    %% live x registers, so it will always be safe to jump to
-    %% it. (We never ever expect the jump to be taken, and in
-    %% most functions there will never be any references to
-    %% the label in the first place.)
-    %%
-
-    {UltimateMatchFail,St3} = new_label(St2),
-
-    %% Create initial stack/register state, clear unused arguments.
-    Bef = clear_dead(#sr{reg=foldl(fun (#k_var{name=V}, Reg) ->
-					   put_reg(V, Reg)
-				   end, [], Hvs),
-			 stk=[]}, 0, Vdb),
-    {B,_Aft,St} = cg_list(Les, Vdb, Bef,
-			  St3#cg{bfail=0,
-				 ultimate_failure=UltimateMatchFail,
-				 is_top_block=true}),
-    {Name,Arity} = NameArity,
-    Asm = [{label,Fi},line(Anno),{func_info,AtomMod,{atom,Name},Arity},
-	   {label,Fl}|B++[{label,UltimateMatchFail},if_end]],
-    {Asm,Fl,St}.
-
-%% cg(Lkexpr, Vdb, StackReg, State) -> {[Ainstr],StackReg,State}.
-%%  Generate code for a kexpr.
-
-cg(#cg_block{anno=Le,es=Es}, Vdb, Bef, St) ->
-    block_cg(Es, Le, Vdb, Bef, St);
-cg(#k_match{anno=Le,body=M,ret=Rs}, Vdb, Bef, St) ->
-    match_cg(M, Rs, Le, Vdb, Bef, St);
-cg(#k_guard_match{anno=Le,body=M,ret=Rs}, Vdb, Bef, St) ->
-    guard_match_cg(M, Rs, Le, Vdb, Bef, St);
-cg(#k_call{anno=Le,op=Func,args=As,ret=Rs}, Vdb, Bef, St) ->
-    call_cg(Func, As, Rs, Le, Vdb, Bef, St);
-cg(#k_enter{anno=Le,op=Func,args=As}, Vdb, Bef, St) ->
-    enter_cg(Func, As, Le, Vdb, Bef, St);
-cg(#k_bif{anno=Le}=Bif, Vdb, Bef, St) ->
-    bif_cg(Bif, Le, Vdb, Bef, St);
-cg(#k_receive{anno=Le,timeout=Te,var=Rvar,body=Rm,action=Tes,ret=Rs},
-   Vdb, Bef, St) ->
-    recv_loop_cg(Te, Rvar, Rm, Tes, Rs, Le, Vdb, Bef, St);
-cg(#k_receive_next{anno=Le}, Vdb, Bef, St) ->
-    recv_next_cg(Le, Vdb, Bef, St);
-cg(#k_receive_accept{}, _Vdb, Bef, St) ->
-    {[remove_message],Bef,St};
-cg(#k_try{anno=Le,arg=Ta,vars=Vs,body=Tb,evars=Evs,handler=Th,ret=Rs},
-   Vdb, Bef, St) ->
-    try_cg(Ta, Vs, Tb, Evs, Th, Rs, Le, Vdb, Bef, St);
-cg(#k_try_enter{anno=Le,arg=Ta,vars=Vs,body=Tb,evars=Evs,handler=Th},
-   Vdb, Bef, St) ->
-    try_enter_cg(Ta, Vs, Tb, Evs, Th, Le, Vdb, Bef, St);
-cg(#k_catch{anno=Le,body=Cb,ret=[R]}, Vdb, Bef, St) ->
-    catch_cg(Cb, R, Le, Vdb, Bef, St);
-cg(#k_put{anno=Le,arg=Con,ret=Var},  Vdb, Bef, St) ->
-    put_cg(Var, Con, Le, Vdb, Bef, St);
-cg(#k_return{anno=Le,args=Rs}, Vdb, Bef, St) ->
-    return_cg(Rs, Le, Vdb, Bef, St);
-cg(#k_break{anno=Le,args=Bs}, Vdb, Bef, St) ->
-    break_cg(Bs, Le, Vdb, Bef, St);
-cg(#k_guard_break{anno=Le,args=Bs}, Vdb, Bef, St) ->
-    guard_break_cg(Bs, Le, Vdb, Bef, St);
-cg(#cg_need_heap{h=H}, _Vdb, Bef, St) ->
-    {[{test_heap,H,max_reg(Bef#sr.reg)}],Bef,St}.
-
-%% cg_list([Kexpr], FirstI, Vdb, StackReg, St) -> {[Ainstr],StackReg,St}.
-
-cg_list(Kes, Vdb, Bef, St0) ->
-    {Keis,{Aft,St1}} =
-	flatmapfoldl(fun (Ke, {Inta,Sta}) ->
-			     {Keis,Intb,Stb} = cg(Ke, Vdb, Inta, Sta),
-			     {Keis,{Intb,Stb}}
-		     end, {Bef,St0}, need_heap(Kes)),
-    {Keis,Aft,St1}.
-
-%% need_heap([Lkexpr], I, St) -> [Lkexpr].
-%%  Insert need_heap instructions in Kexpr list.  Try to be smart and
-%%  collect them together as much as possible.
-
-need_heap(Kes0) ->
-    {Kes,H} = need_heap_0(reverse(Kes0), 0, []),
-
-    %% Prepend need_heap if necessary.
-    need_heap_need(H) ++ Kes.
-
-need_heap_0([Ke|Kes], H0, Acc) ->
-    {Ns,H} = need_heap_1(Ke, H0),
-    need_heap_0(Kes, H, [Ke|Ns]++Acc);
-need_heap_0([], H, Acc) ->
-    {Acc,H}.
-
-need_heap_1(#k_put{arg=#k_binary{}}, H) ->
-    {need_heap_need(H),0};
-need_heap_1(#k_put{arg=#k_map{}}, H) ->
-    {need_heap_need(H),0};
-need_heap_1(#k_put{arg=Val}, H) ->
-    %% Just pass through adding to needed heap.
-    {[],H + case Val of
-		#k_cons{} -> 2;
-		#k_tuple{es=Es} -> 1 + length(Es);
-		_Other -> 0
-	    end};
-need_heap_1(#k_bif{}=Bif, H) ->
-    case is_gc_bif(Bif) of
-        false ->
-            {[],H};
-        true ->
-            {need_heap_need(H),0}
-    end;
-need_heap_1(_Ke, H) ->
-    %% Call or call-like instruction such as set_tuple_element/3.
-    {need_heap_need(H),0}.
-
-need_heap_need(0) -> [];
-need_heap_need(H) -> [#cg_need_heap{h=H}].
-
-%% is_gc_bif(#k_bif{}) -> true|false.
-%% is_gc_bif(Name, Arity) -> true|false.
-%%  Determines whether the BIF Name/Arity might do a GC.
-
-is_gc_bif(#k_bif{op=#k_remote{name=#k_atom{val=Name}},args=Args}) ->
-    is_gc_bif(Name, length(Args));
-is_gc_bif(#k_bif{op=#k_internal{}}) ->
-    true.
-
-is_gc_bif(hd, 1) -> false;
-is_gc_bif(tl, 1) -> false;
-is_gc_bif(self, 0) -> false;
-is_gc_bif(node, 0) -> false;
-is_gc_bif(node, 1) -> false;
-is_gc_bif(element, 2) -> false;
-is_gc_bif(get, 1) -> false;
-is_gc_bif(tuple_size, 1) -> false;
-is_gc_bif(map_get, 2) -> false;
-is_gc_bif(is_map_key, 2) -> false;
-is_gc_bif(Bif, Arity) ->
-    not (erl_internal:bool_op(Bif, Arity) orelse
-	 erl_internal:new_type_test(Bif, Arity) orelse
-	 erl_internal:comp_op(Bif, Arity)).
-
-%% match_cg(Matc, [Ret], Le, Vdb, StackReg, State) ->
-%%	{[Ainstr],StackReg,State}.
-%%  Generate code for a match.  First save all variables on the stack
-%%  that are to survive after the match.  We leave saved variables in
-%%  their registers as they might actually be in the right place.
-
-match_cg(M, Rs, Le, Vdb, Bef, St0) ->
-    I = Le#l.i,
-    {Sis,Int0} = adjust_stack(Bef, I, I+1, Vdb),
-    {B,St1} = new_label(St0),
-    {Mis,Int1,St2} = match_cg(M, St1#cg.ultimate_failure,
-			      Int0, St1#cg{break=B}),
-    %% Put return values in registers.
-    Reg = load_vars(Rs, Int1#sr.reg),
-    {Sis ++ Mis ++ [{label,B}],
-     clear_dead(Int1#sr{reg=Reg}, I, Vdb),
-     St2#cg{break=St1#cg.break}}.
-
-guard_match_cg(M, Rs, Le, Vdb, Bef, St0) ->
-    I = Le#l.i,
-    {B,St1} = new_label(St0),
-    Fail = case St0 of
-               #cg{bfail=0,ultimate_failure=Fail0} -> Fail0;
-               #cg{bfail=Fail0} -> Fail0
-           end,
-    {Mis,Aft,St2} = match_cg(M, Fail, Bef, St1#cg{break=B}),
-    %% Update the register descriptors for the return registers.
-    Reg = guard_match_regs(Aft#sr.reg, Rs),
-    {Mis ++ [{label,B}],
-     clear_dead(Aft#sr{reg=Reg}, I, Vdb),
-     St2#cg{break=St1#cg.break}}.
-
-guard_match_regs([{I,gbreakvar}|Rs], [#k_var{name=V}|Vs]) ->
-    [{I,V}|guard_match_regs(Rs, Vs)];
-guard_match_regs([R|Rs], Vs) ->
-    [R|guard_match_regs(Rs, Vs)];
-guard_match_regs([], []) -> [].
-    
-
-%% match_cg(Match, Fail, StackReg, State) -> {[Ainstr],StackReg,State}.
-%%  Generate code for a match tree.  N.B. there is no need pass Vdb
-%%  down as each level which uses this takes its own internal Vdb not
-%%  the outer one.
-
-match_cg(#k_alt{first=F,then=S}, Fail, Bef, St0) ->
-    {Tf,St1} = new_label(St0),
-    {Fis,Faft,St2} = match_cg(F, Tf, Bef, St1),
-    {Sis,Saft,St3} = match_cg(S, Fail, Bef, St2),
-    Aft = sr_merge(Faft, Saft),
-    {Fis ++ [{label,Tf}] ++ Sis,Aft,St3};
-match_cg(#k_select{var=#k_var{anno=Vanno,name=Vname}=V,types=Scs0}, Fail, Bef, St) ->
-    ReuseForContext = member(reuse_for_context, Vanno) andalso
-	find_reg(Vname, Bef#sr.reg) =/= error,
-    Scs = case ReuseForContext of
-	      false -> Scs0;
-	      true -> bsm_rename_ctx(Scs0, Vname)
-	  end,
-    match_fmf(fun (S, F, Sta) ->
-		      select_cg(S, V, F, Fail, Bef, Sta) end,
-	      Fail, St, Scs);
-match_cg(#k_guard{clauses=Gcs}, Fail, Bef, St) ->
-    match_fmf(fun (G, F, Sta) -> guard_clause_cg(G, F, Bef, Sta) end,
-	      Fail, St, Gcs);
-match_cg(#cg_block{anno=Le,es=Es}, _Fail, Bef, St) ->
-    %% Must clear registers and stack of dead variables.
-    Int = clear_dead(Bef, Le#l.i, Le#l.vdb),
-    block_cg(Es, Le, Int, St).
-
-%% bsm_rename_ctx([Clause], Var) -> [Clause]
-%%  We know from an annotation that the register for a binary can
-%%  be reused for the match context because the two are not truly
-%%  alive at the same time (even though the life time information
-%%  says so).
-%%
-%%  The easiest way to have those variables share the same register is
-%%  to rename the variable with the shortest life-span (the match
-%%  context) to the variable for the binary (which can have a very
-%%  long life-time because it is locked during matching). We KNOW that
-%%  the match state variable will only be alive during the matching.
-%%
-%%  We must also remove all information about the match context
-%%  variable from all life-time information databases (Vdb).
-
-bsm_rename_ctx([#k_type_clause{type=k_binary,values=Vcs}=TC|Cs], New) ->
-    [#k_val_clause{val=#k_binary{segs=#k_var{name=Old}}=Bin,
-                   body=Ke0}=VC0] = Vcs,
-    Ke = bsm_rename_ctx(Ke0, Old, New, false),
-    VC = VC0#k_val_clause{val=Bin#k_binary{segs=#k_var{name=New}},
-                          body=Ke},
-    [TC#k_type_clause{values=[VC]}|bsm_rename_ctx(Cs, New)];
-bsm_rename_ctx([C|Cs], New) ->
-    [C|bsm_rename_ctx(Cs, New)];
-bsm_rename_ctx([], _) -> [].
-
-%% bsm_rename_ctx(Ke, OldName, NewName, InProt) -> Ke'
-%%  Rename and clear OldName from life-time information. We must
-%%  recurse into any block contained in a protected, but it would
-%%  only complicatate things to recurse into blocks not in a protected
-%%  (the match context variable is not live inside them).
-
-bsm_rename_ctx(#k_select{var=#k_var{name=V},types=Cs0}=Sel,
-               Old, New, InProt) ->
-    Cs = bsm_rename_ctx_list(Cs0, Old, New, InProt),
-    Sel#k_select{var=#k_var{name=bsm_rename_var(V, Old, New)},types=Cs};
-bsm_rename_ctx(#k_type_clause{values=Cs0}=TC, Old, New, InProt) ->
-    Cs = bsm_rename_ctx_list(Cs0, Old, New, InProt),
-    TC#k_type_clause{values=Cs};
-bsm_rename_ctx(#k_val_clause{body=Ke0}=VC, Old, New, InProt) ->
-    Ke = bsm_rename_ctx(Ke0, Old, New, InProt),
-    VC#k_val_clause{body=Ke};
-bsm_rename_ctx(#k_alt{first=F0,then=S0}=Alt, Old, New, InProt) ->
-    F = bsm_rename_ctx(F0, Old, New, InProt),
-    S = bsm_rename_ctx(S0, Old, New, InProt),
-    Alt#k_alt{first=F,then=S};
-bsm_rename_ctx(#k_guard{clauses=Gcs0}=Guard, Old, New, InProt) ->
-    Gcs = bsm_rename_ctx_list(Gcs0, Old, New, InProt),
-    Guard#k_guard{clauses=Gcs};
-bsm_rename_ctx(#k_guard_clause{guard=G0,body=B0}=GC, Old, New, InProt) ->
-    G = bsm_rename_ctx(G0, Old, New, InProt),
-    B = bsm_rename_ctx(B0, Old, New, InProt),
-    %% A guard clause may cause unsaved variables to be saved on the stack.
-    %% Since the match state variable Old is an alias for New (uses the
-    %% same register), it is neither in the stack nor register descriptor
-    %% lists and we would crash when we didn't find it unless we remove
-    %% it from the database.
-    bsm_forget_var(GC#k_guard_clause{guard=G,body=B}, Old);
-bsm_rename_ctx(#k_protected{arg=Ts0}=Prot, Old, New, _InProt) ->
-    InProt = true,
-    Ts = bsm_rename_ctx_list(Ts0, Old, New, InProt),
-    bsm_forget_var(Prot#k_protected{arg=Ts}, Old);
-bsm_rename_ctx(#k_guard_match{body=Ms0}=Match, Old, New, InProt) ->
-    Ms = bsm_rename_ctx(Ms0, Old, New, InProt),
-    Match#k_guard_match{body=Ms};
-bsm_rename_ctx(#k_test{}=Test, _, _, _) -> Test;
-bsm_rename_ctx(#k_bif{}=Bif, _, _, _) -> Bif;
-bsm_rename_ctx(#k_put{}=Put, _, _, _) -> Put;
-bsm_rename_ctx(#k_call{}=Call, _, _, _) -> Call;
-bsm_rename_ctx(#cg_block{}=Block, Old, _, false) ->
-    %% This block is not inside a protected. The match context variable cannot
-    %% possibly be live inside the block.
-    bsm_forget_var(Block, Old);
-bsm_rename_ctx(#cg_block{es=Es0}=Block, Old, New, true) ->
-    %% A block in a protected. We must recursively rename the variable
-    %% inside the block.
-    Es = bsm_rename_ctx_list(Es0, Old, New, true),
-    bsm_forget_var(Block#cg_block{es=Es}, Old);
-bsm_rename_ctx(#k_guard_break{}=Break, Old, _New, _InProt) ->
-    bsm_forget_var(Break, Old).
-
-bsm_rename_ctx_list([C|Cs], Old, New, InProt) ->
-    [bsm_rename_ctx(C, Old, New, InProt)|
-     bsm_rename_ctx_list(Cs, Old, New, InProt)];
-bsm_rename_ctx_list([], _, _, _) -> [].
-
-bsm_rename_var(Old, Old, New) -> New;
-bsm_rename_var(V, _, _) -> V.
-
-%% bsm_forget_var(#l{}, Variable) -> #l{}
-%%  Remove a variable from the variable life-time database.
-
-bsm_forget_var(Ke, V) ->
-    #l{vdb=Vdb} = L0 = get_kanno(Ke),
-    L = L0#l{vdb=keydelete(V, 1, Vdb)},
-    set_kanno(Ke, L).
-
-%% block_cg([Kexpr], Le, Vdb, StackReg, St) -> {[Ainstr],StackReg,St}.
-%% block_cg([Kexpr], Le, StackReg, St) -> {[Ainstr],StackReg,St}.
-
-block_cg(Es, Le, _Vdb, Bef, St) ->
-    block_cg(Es, Le, Bef, St).
-
-block_cg(Es, Le, Bef, #cg{is_top_block=false}=St) ->
-    cg_block(Es, Le#l.vdb, Bef, St);
-block_cg(Es, Le, Bef, #cg{is_top_block=true}=St0) ->
-    %% No stack frame has been established yet. Do we need one?
-    case need_stackframe(Es) of
-        true ->
-            %% We need a stack frame. Generate the code and add the
-            %% code for creating and deallocating the stack frame.
-            {Is0,Aft,St} = cg_block(Es, Le#l.vdb, Bef,
-                                    St0#cg{is_top_block=false,need_frame=false}),
-            Is = top_level_block(Is0, Aft, max_reg(Bef#sr.reg), St),
-            {Is,Aft,St#cg{is_top_block=true}};
-        false ->
-            %% This sequence of instructions ending in a #k_match{} (a
-            %% 'case' or 'if') in the Erlang code does not need a
-            %% stack frame yet. Delay the creation (if a stack frame
-            %% is needed at all, it will be created inside the
-            %% #k_match{}).
-            cg_list(Es, Le#l.vdb, Bef, St0)
-    end.
-
-%% need_stackframe([Kexpr]) -> true|false.
-%%  Does this list of instructions need a stack frame?
-%%
-%%  A sequence of instructions that don't clobber the X registers
-%%  followed by a single #k_match{} doesn't need a stack frame.
-
-need_stackframe([H|T]) ->
-    case H of
-        #k_bif{op=#k_internal{}} -> true;
-        #k_put{arg=#k_binary{}} -> true;
-        #k_bif{} -> need_stackframe(T);
-        #k_put{} -> need_stackframe(T);
-        #k_guard_match{} -> need_stackframe(T);
-        #k_match{} when T =:= [] -> false;
-        _ -> true
-    end;
-need_stackframe([]) -> false.
-
-cg_block([], _Vdb, Bef, St0) ->
-    {[],Bef,St0};
-cg_block(Kes0, Vdb, Bef, St0) ->
-    {Kes2,Int1,St1} =
-	case basic_block(Kes0) of
-	    {Kes1,LastI,Args,Rest} ->
-		cg_basic_block(Kes1, LastI, Args, Vdb, Bef, St0);
-	    {Kes1,Rest} ->
-		cg_list(Kes1, Vdb, Bef, St0)
-	end,
-    {Kes3,Int2,St2} = cg_block(Rest, Vdb, Int1, St1),
-    {Kes2 ++ Kes3,Int2,St2}.
-
-basic_block(Kes) -> basic_block(Kes, []).
-
-basic_block([Ke|Kes], Acc) ->
-    case collect_block(Ke) of
-	include -> basic_block(Kes, [Ke|Acc]);
-	{block_end,As} ->
-	    case Acc of
-		[] ->
-		    %% If the basic block does not contain any #k_put{} instructions,
-		    %% it serves no useful purpose to do basic block optimizations.
-		    {[Ke],Kes};
-		_ ->
-                    #l{i=I} = get_kanno(Ke),
-		    {reverse(Acc, [Ke]),I,As,Kes}
-	    end;
-	no_block -> {reverse(Acc, [Ke]),Kes}
-    end.
-
-collect_block(#k_put{arg=Arg}) ->
-    %% #k_put{} instructions that may garbage collect are not allowed
-    %% in basic blocks.
-    case Arg of
-        #k_binary{} -> no_block;
-        #k_map{} -> no_block;
-        _ -> include
-    end;
-collect_block(#k_call{op=Func,args=As}) ->
-    {block_end,As++func_vars(Func)};
-collect_block(#k_enter{op=Func,args=As}) ->
-    {block_end,As++func_vars(Func)};
-collect_block(#k_return{args=Rs}) ->
-    {block_end,Rs};
-collect_block(#k_break{args=Bs}) ->
-    {block_end,Bs};
-collect_block(_) -> no_block.
-
-func_vars(#k_var{}=Var) ->
-    [Var];
-func_vars(#k_remote{mod=M,name=F})
-  when is_record(M, k_var); is_record(F, k_var) ->
-    [M,F];
-func_vars(_) -> [].
-
-%% cg_basic_block([Kexpr], FirstI, LastI, Arguments, Vdb, StackReg, State) ->
-%%      {[Ainstr],StackReg,State}.
-%%
-%%  Do a specialized code generation for a basic block of #put{}
-%%  instructions (that don't do any garbage collection) followed by a
-%%  call, break, or return.
-%%
-%%  'Arguments' is a list of the variables that must be loaded into
-%%  consecutive X registers before the last instruction in the block.
-%%  The point of this specialized code generation is to try put the
-%%  all of the variables in 'Arguments' into the correct X register
-%%  to begin with, instead of putting them into the first available
-%%  X register and having to move them to the correct X register
-%%  later.
-%%
-%%  To achieve that, we attempt to reserve the X registers that the
-%%  variables in 'Arguments' will need to be in when the block ends.
-%%
-%%  To make it more likely that reservations will be successful, we
-%%  will try to save variables that need to be saved to the stack as
-%%  early as possible (if an X register needed by a variable in
-%%  Arguments is occupied by another variable, the value in the
-%%  X register can be evicted if it is saved on the stack).
-%%
-%%  We will take care not to increase the size of stack frame compared
-%%  to what the standard code generator would have done (that is, to
-%%  save all X registers at the last possible moment). We will do that
-%%  by extending the stack frame to the minimal size needed to save
-%%  all that needs to be saved using extend_stack/4, and use
-%%  save_carefully/4 during code generation to only save the variables
-%%  that can be saved without growing the stack frame.
-
-cg_basic_block(Kes, Lf, As, Vdb, Bef, St0) ->
-    Int0 = reserve_arg_regs(As, Bef),
-    Int = extend_stack(Int0, Lf, Lf+1, Vdb),
-    {Keis,{Aft,St1}} =
-	flatmapfoldl(fun(Ke, St) -> cg_basic_block(Ke, St, Lf, Vdb) end,
-		     {Int,St0}, need_heap(Kes)),
-    {Keis,Aft,St1}.
-
-cg_basic_block(#cg_need_heap{}=Ke, {Bef,St0}, _Lf, Vdb) ->
-    {Keis,Aft,St1} = cg(Ke, Vdb, Bef, St0),
-    {Keis,{Aft,St1}};
-cg_basic_block(Ke, {Bef,St0}, Lf, Vdb) ->
-    #l{i=I} = get_kanno(Ke),
-
-    %% Save all we can to increase the possibility that reserving
-    %% registers will succeed.
-    {Sis,Int0} = save_carefully(Bef, I, Lf+1, Vdb),
-    Int1 = reserve(Int0),
-    {Keis,Aft,St1} = cg(Ke, Vdb, Int1, St0),
-    {Sis ++ Keis,{Aft,St1}}.
-
-%% reserve_arg_regs([Argument], Bef) -> Aft.
-%%  Try to reserve the X registers for all arguments. All registers
-%%  that we wish to reserve will be saved in Bef#sr.res.
-
-reserve_arg_regs(As, Bef) ->
-    Res = reserve_arg_regs_1(As, 0),
-    reserve(Bef#sr{res=Res}).
-
-reserve_arg_regs_1([#k_var{name=V}|As], I) ->
-    [{I,V}|reserve_arg_regs_1(As, I+1)];
-reserve_arg_regs_1([A|As], I) ->
-    [{I,A}|reserve_arg_regs_1(As, I+1)];
-reserve_arg_regs_1([], _) -> [].
-
-%% reserve(Bef) -> Aft.
-%%  Try to reserve more registers. The registers we wish to reserve
-%%  are found in Bef#sr.res.
-
-reserve(#sr{reg=Regs,stk=Stk,res=Res}=Sr) ->
-    Sr#sr{reg=reserve_1(Res, Regs, Stk)}.
-
-reserve_1([{I,V}|Rs], [free|Regs], Stk) ->
-    [{reserved,I,V}|reserve_1(Rs, Regs, Stk)];
-reserve_1([{I,V}|Rs], [{I,V}|Regs], Stk) ->
-    [{I,V}|reserve_1(Rs, Regs, Stk)];
-reserve_1([{I,V}|Rs], [{I,Var}|Regs], Stk) ->
-    case on_stack(Var, Stk) of
-	true -> [{reserved,I,V}|reserve_1(Rs, Regs, Stk)];
-	false -> [{I,Var}|reserve_1(Rs, Regs, Stk)]
-    end;
-reserve_1([{I,V}|Rs], [{reserved,I,_}|Regs], Stk) ->
-    [{reserved,I,V}|reserve_1(Rs, Regs, Stk)];
-reserve_1([{I,V}|Rs], [], Stk) ->
-    [{reserved,I,V}|reserve_1(Rs, [], Stk)];
-reserve_1([], Regs, _) -> Regs.
-
-%% extend_stack(Bef, FirstBefore, LastFrom, Vdb) -> Aft.
-%%  Extend the stack enough to fit all variables alive past LastFrom
-%%  and not already on the stack.
-
-extend_stack(#sr{stk=Stk0}=Bef, Fb, Lf, Vdb) ->
-    Stk1 = clear_dead_stk(Stk0, Fb, Vdb),
-    New = new_not_on_stack(Stk1, Fb, Lf, Vdb),
-    Stk2 = foldl(fun ({V,_,_}, Stk) -> put_stack(V, Stk) end, Stk1, New),
-    Stk = Stk0 ++ lists:duplicate(length(Stk2) - length(Stk0), free),
-    Bef#sr{stk=Stk}.
-
-%% save_carefully(Bef, FirstBefore, LastFrom, Vdb) -> {[SaveVar],Aft}.
-%%  Save variables which are used past current point and which are not
-%%  already on the stack, but only if the variables can be saved without
-%%  growing the stack frame.
-
-save_carefully(#sr{stk=Stk}=Bef, Fb, Lf, Vdb) ->
-    New0 = new_not_on_stack(Stk, Fb, Lf, Vdb),
-    New = keysort(2, New0),
-    save_carefully_1(New, Bef, []).
-
-save_carefully_1([{V,_,_}|Vs], #sr{reg=Regs,stk=Stk0}=Bef, Acc) ->
-    case put_stack_carefully(V, Stk0) of
-	error ->
-            {reverse(Acc),Bef};
-	Stk1 ->
-	    SrcReg = fetch_reg(V, Regs),
-	    Move = {move,SrcReg,fetch_stack(V, Stk1)},
-	    {x,_} = SrcReg,			%Assertion - must be X register.
-	    save_carefully_1(Vs, Bef#sr{stk=Stk1}, [Move|Acc])
-    end;
-save_carefully_1([], Bef, Acc) ->
-    {reverse(Acc),Bef}.
-
-%% top_level_block([Instruction], Bef, MaxRegs, St) -> [Instruction].
-%%  For the top-level block, allocate a stack frame a necessary,
-%%  adjust Y register numbering and instructions that return
-%%  from the function.
-
-top_level_block(Keis, #sr{stk=[]}, _MaxRegs, #cg{need_frame=false}) ->
-    Keis;
-top_level_block(Keis, Bef, MaxRegs, _St) ->
-    %% This top block needs an allocate instruction before it, and a
-    %% deallocate instruction before each return.
-    FrameSz = length(Bef#sr.stk),
-    MaxY = FrameSz-1,
-    Keis1 = flatmap(fun ({call_only,Arity,Func}) ->
-			    [{call_last,Arity,Func,FrameSz}];
-			({call_ext_only,Arity,Func}) ->
-			    [{call_ext_last,Arity,Func,FrameSz}];
-			({apply_only,Arity}) ->
-			    [{apply_last,Arity,FrameSz}];
-			(return) ->
-			    [{deallocate,FrameSz},return];
-			(Tuple) when is_tuple(Tuple) ->
-			    [turn_yregs(Tuple, MaxY)];
-			(Other) ->
-			    [Other]
-		    end, Keis),
-    [{allocate_zero,FrameSz,MaxRegs}|Keis1].
-
-%% turn_yregs(Size, Tuple, MaxY) -> Tuple'
-%%   Renumber y register so that {y,0} becomes {y,FrameSize-1},
-%%   {y,FrameSize-1} becomes {y,0} and so on.  This is to make nested
-%%   catches work.  The code generation algorithm gives a lower register
-%%   number to the outer catch, which is wrong.
-
-turn_yregs({call,_,_}=I, _MaxY) -> I;
-turn_yregs({call_ext,_,_}=I, _MaxY) -> I;
-turn_yregs({jump,_}=I, _MaxY) -> I;
-turn_yregs({label,_}=I, _MaxY) -> I;
-turn_yregs({line,_}=I, _MaxY) -> I;
-turn_yregs({test_heap,_,_}=I, _MaxY) -> I;
-turn_yregs({bif,Op,F,A,B}, MaxY) ->
-    {bif,Op,F,turn_yreg(A, MaxY),turn_yreg(B, MaxY)};
-turn_yregs({gc_bif,Op,F,Live,A,B}, MaxY) when is_integer(Live) ->
-    {gc_bif,Op,F,Live,turn_yreg(A, MaxY),turn_yreg(B, MaxY)};
-turn_yregs({get_tuple_element,S,N,D}, MaxY) ->
-    {get_tuple_element,turn_yreg(S, MaxY),N,turn_yreg(D, MaxY)};
-turn_yregs({put_tuple,Arity,D}, MaxY) ->
-    {put_tuple,Arity,turn_yreg(D, MaxY)};
-turn_yregs({select_val,R,F,L}, MaxY) ->
-    {select_val,turn_yreg(R, MaxY),F,L};
-turn_yregs({test,Op,F,L}, MaxY) ->
-    {test,Op,F,turn_yreg(L, MaxY)};
-turn_yregs({test,Op,F,Live,A,B}, MaxY) when is_integer(Live) ->
-    {test,Op,F,Live,turn_yreg(A, MaxY),turn_yreg(B, MaxY)};
-turn_yregs({Op,A}, MaxY) ->
-    {Op,turn_yreg(A, MaxY)};
-turn_yregs({Op,A,B}, MaxY) ->
-    {Op,turn_yreg(A, MaxY),turn_yreg(B, MaxY)};
-turn_yregs({Op,A,B,C}, MaxY) ->
-    {Op,turn_yreg(A, MaxY),turn_yreg(B, MaxY),turn_yreg(C, MaxY)};
-turn_yregs(Tuple, MaxY) ->
-    turn_yregs(tuple_size(Tuple), Tuple, MaxY).
-
-turn_yregs(1, Tp, _) ->
-    Tp;
-turn_yregs(N, Tp, MaxY) ->
-    E = turn_yreg(element(N, Tp), MaxY),
-    turn_yregs(N-1, setelement(N, Tp, E), MaxY).
-
-turn_yreg({yy,YY}, MaxY) ->
-    {y,MaxY-YY};
-turn_yreg({list,Ls},MaxY) ->
-    {list,turn_yreg(Ls, MaxY)};
-turn_yreg([_|_]=Ts, MaxY) ->
-    [turn_yreg(T, MaxY) || T <- Ts];
-turn_yreg(Other, _MaxY) ->
-    Other.
-
-%% select_cg(Sclause, V, TypeFail, ValueFail, StackReg, State) ->
-%%      {Is,StackReg,State}.
-%%  Selecting type and value needs two failure labels, TypeFail is the
-%%  label to jump to of the next type test when this type fails, and
-%%  ValueFail is the label when this type is correct but the value is
-%%  wrong.  These are different as in the second case there is no need
-%%  to try the next type, it will always fail.
-
-select_cg(#k_type_clause{type=Type,values=Vs}, Var, Tf, Vf, Bef, St) ->
-    #k_var{name=V} = Var,
-    select_cg(Type, Vs, V, Tf, Vf, Bef, St).
-
-select_cg(k_cons, [S], V, Tf, Vf, Bef, St) ->
-    select_cons(S, V, Tf, Vf, Bef, St);
-select_cg(k_nil, [S], V, Tf, Vf, Bef, St) ->
-    select_nil(S, V, Tf, Vf, Bef, St);
-select_cg(k_binary, [S], V, Tf, Vf, Bef, St) ->
-    select_binary(S, V, Tf, Vf, Bef, St);
-select_cg(k_bin_seg, S, V, Tf, _Vf, Bef, St) ->
-    select_bin_segs(S, V, Tf, Bef, St);
-select_cg(k_bin_int, S, V, Tf, _Vf, Bef, St) ->
-    select_bin_segs(S, V, Tf, Bef, St);
-select_cg(k_bin_end, [S], V, Tf, _Vf, Bef, St) ->
-    select_bin_end(S, V, Tf, Bef, St);
-select_cg(k_map, S, V, Tf, Vf, Bef, St) ->
-    select_map(S, V, Tf, Vf, Bef, St);
-select_cg(k_literal, S, V, Tf, Vf, Bef, St) ->
-    select_literal(S, V, Tf, Vf, Bef, St);
-select_cg(Type, Scs, V, Tf, Vf, Bef, St0) ->
-    {Vis,{Aft,St1}} =
-	mapfoldl(fun (S, {Int,Sta}) ->
-			 {Val,Is,Inta,Stb} = select_val(S, V, Vf, Bef, Sta),
-			 {{Is,[Val]},{sr_merge(Int, Inta),Stb}}
-		 end, {void,St0}, Scs),
-    OptVls = combine(lists:sort(combine(Vis))),
-    {Vls,Sis,St2} = select_labels(OptVls, St1, [], []),
-    {select_val_cg(Type, fetch_var(V, Bef), Vls, Tf, Vf, Sis), Aft, St2}.
-
-select_val_cg(k_tuple, R, [Arity,{f,Lbl}], Tf, Vf, [{label,Lbl}|Sis]) ->
-    [{test,is_tuple,{f,Tf},[R]},{test,test_arity,{f,Vf},[R,Arity]}|Sis];
-select_val_cg(k_tuple, R, Vls, Tf, Vf, Sis) ->
-    [{test,is_tuple,{f,Tf},[R]},{select_tuple_arity,R,{f,Vf},{list,Vls}}|Sis];
-select_val_cg(Type, R, [Val, {f,Lbl}], Fail, Fail, [{label,Lbl}|Sis]) ->
-    [{test,is_eq_exact,{f,Fail},[R,{type(Type),Val}]}|Sis];
-select_val_cg(Type, R, [Val, {f,Lbl}], Tf, Vf, [{label,Lbl}|Sis]) ->
-    [{test,select_type_test(Type),{f,Tf},[R]},
-     {test,is_eq_exact,{f,Vf},[R,{type(Type),Val}]}|Sis];
-select_val_cg(Type, R, Vls0, Tf, Vf, Sis) ->
-    Vls1 = [case Value of
-                {f,_Lbl} -> Value;
-                _ -> {type(Type),Value}
-            end || Value <- Vls0],
-    [{test,select_type_test(Type),{f,Tf},[R]}, {select_val,R,{f,Vf},{list,Vls1}}|Sis].
-
-type(k_atom) -> atom;
-type(k_float) -> float;
-type(k_int) -> integer.
-
-select_type_test(k_int) -> is_integer;
-select_type_test(k_atom) -> is_atom;
-select_type_test(k_float) -> is_float.
-
-combine([{Is,Vs1}, {Is,Vs2}|Vis]) -> combine([{Is,Vs1 ++ Vs2}|Vis]);
-combine([V|Vis]) -> [V|combine(Vis)];
-combine([]) -> [].
-
-select_labels([{Is,Vs}|Vis], St0, Vls, Sis) ->
-    {Lbl,St1} = new_label(St0),
-    select_labels(Vis, St1, add_vls(Vs, Lbl, Vls), [[{label,Lbl}|Is]|Sis]);
-select_labels([], St, Vls, Sis) ->
-    {Vls,append(Sis),St}.
-
-add_vls([V|Vs], Lbl, Acc) ->
-    add_vls(Vs, Lbl, [V, {f,Lbl}|Acc]);
-add_vls([], _, Acc) -> Acc.
-
-select_literal(S, V, Tf, Vf, Bef, St) ->
-    Reg = fetch_var(V, Bef),
-    F = fun(ValClause, Fail, St0) ->
-                {Val,Is,Aft,St1} = select_val(ValClause, V, Vf, Bef, St0),
-                Test = {test,is_eq_exact,{f,Fail},[Reg,{literal,Val}]},
-                {[Test|Is],Aft,St1}
-        end,
-    match_fmf(F, Tf, St, S).
-
-select_cons(#k_val_clause{val=#k_cons{hd=Hd,tl=Tl},body=B,anno=#l{i=I,vdb=Vdb}},
-            V, Tf, Vf, Bef, St0) ->
-    Es = [Hd,Tl],
-    {Eis,Int,St1} = select_extract_cons(V, Es, I, Vdb, Bef, St0),
-    {Bis,Aft,St2} = match_cg(B, Vf, Int, St1),
-    {[{test,is_nonempty_list,{f,Tf},[fetch_var(V, Bef)]}] ++ Eis ++ Bis,Aft,St2}.
-
-select_nil(#k_val_clause{val=#k_nil{},body=B}, V, Tf, Vf, Bef, St0) ->
-    {Bis,Aft,St1} = match_cg(B, Vf, Bef, St0),
-    {[{test,is_nil,{f,Tf},[fetch_var(V, Bef)]}] ++ Bis,Aft,St1}.
-
-select_binary(#k_val_clause{val=#k_binary{segs=#k_var{name=V}},body=B,
-                            anno=#l{i=I,vdb=Vdb}}, V, Tf, Vf, Bef, St0) ->
-    #cg{ctx=OldCtx} = St0,
-    Int0 = clear_dead(Bef#sr{reg=Bef#sr.reg}, I, Vdb),
-    {Bis0,Aft,St1} = match_cg(B, Vf, Int0, St0#cg{ctx=V}),
-    CtxReg = fetch_var(V, Int0),
-    Live = max_reg(Bef#sr.reg),
-    Bis1 = [{test,bs_start_match2,{f,Tf},Live,[CtxReg,{context,V}],CtxReg},
-	    {bs_save2,CtxReg,{V,V}}|Bis0],
-    Bis = finish_select_binary(Bis1),
-    {Bis,Aft,St1#cg{ctx=OldCtx}};
-select_binary(#k_val_clause{val=#k_binary{segs=#k_var{name=Ivar}},body=B,
-                            anno=#l{i=I,vdb=Vdb}}, V, Tf, Vf, Bef, St0) ->
-    #cg{ctx=OldCtx} = St0,
-    Regs = put_reg(Ivar, Bef#sr.reg),
-    Int0 = clear_dead(Bef#sr{reg=Regs}, I, Vdb),
-    {Bis0,Aft,St1} = match_cg(B, Vf, Int0, St0#cg{ctx=Ivar}),
-    CtxReg = fetch_var(Ivar, Int0),
-    Live = max_reg(Bef#sr.reg),
-    Bis1 = [{test,bs_start_match2,{f,Tf},Live,
-             [fetch_var(V, Bef),{context,Ivar}],CtxReg},
-	    {bs_save2,CtxReg,{Ivar,Ivar}}|Bis0],
-    Bis = finish_select_binary(Bis1),
-    {Bis,Aft,St1#cg{ctx=OldCtx}}.
-
-finish_select_binary([{bs_save2,R,Point}=I,{bs_restore2,R,Point}|Is]) ->
-    [I|finish_select_binary(Is)];
-finish_select_binary([{bs_save2,R,Point}=I,{test,is_eq_exact,_,_}=Test,
-		      {bs_restore2,R,Point}|Is]) ->
-    [I,Test|finish_select_binary(Is)];
-finish_select_binary([{test,bs_match_string,F,[Ctx,BinList]}|Is])
-  when is_list(BinList) ->
-    I = {test,bs_match_string,F,[Ctx,list_to_bitstring(BinList)]},
-    [I|finish_select_binary(Is)];
-finish_select_binary([I|Is]) ->
-    [I|finish_select_binary(Is)];
-finish_select_binary([]) -> [].
-
-%% New instructions for selection of binary segments.
-
-select_bin_segs(Scs, Ivar, Tf, Bef, St) ->
-    match_fmf(fun(S, Fail, Sta) ->
-		      select_bin_seg(S, Ivar, Fail, Bef, Sta) end,
-	      Tf, St, Scs).
-
-select_bin_seg(#k_val_clause{val=#k_bin_seg{size=Size,unit=U,type=T,
-                                            seg=Seg,flags=Fs0,next=Next},
-                             body=B,
-                             anno=#l{i=I,vdb=Vdb,a=A}}, Ivar, Fail, Bef, St0) ->
-    Ctx = St0#cg.ctx,
-    Fs = [{anno,A}|Fs0],
-    Es = case Next of
-             [] -> [Seg];
-             _ -> [Seg,Next]
-         end,
-    {Mis,Int,St1} = select_extract_bin(Es, Size, U, T, Fs, Fail,
-				       I, Vdb, Bef, Ctx, B, St0),
-    {Bis,Aft,St2} = match_cg(B, Fail, Int, St1),
-    CtxReg = fetch_var(Ctx, Bef),
-    Is = if
-	     Mis =:= [] ->
-		 %% No bs_restore2 instruction needed if no match instructions.
-		 Bis;
-	     true ->
-		 [{bs_restore2,CtxReg,{Ctx,Ivar}}|Mis++Bis]
-	 end,
-    {Is,Aft,St2};
-select_bin_seg(#k_val_clause{val=#k_bin_int{size=Sz,unit=U,flags=Fs,
-                                            val=Val,next=Next},
-                             body=B,
-                             anno=#l{i=I,vdb=Vdb}}, Ivar, Fail, Bef, St0) ->
-    Ctx = St0#cg.ctx,
-    {Mis,Int,St1} = select_extract_int(Next, Val, Sz, U, Fs, Fail,
-				       I, Vdb, Bef, Ctx, St0),
-    {Bis,Aft,St2} = match_cg(B, Fail, Int, St1),
-    CtxReg = fetch_var(Ctx, Bef),
-    Is = case Mis ++ Bis of
-	     [{test,bs_match_string,F,[OtherCtx,Bin1]},
-	      {bs_save2,OtherCtx,_},
-	      {bs_restore2,OtherCtx,_},
-	      {test,bs_match_string,F,[OtherCtx,Bin2]}|Is0] ->
-		 %% We used to do this optimization later, but it
-		 %% turns out that in huge functions with many
-		 %% bs_match_string instructions, it's a big win
-		 %% to do the combination now. To avoid copying the
-		 %% binary data again and again, we'll combine bitstrings
-		 %% in a list and convert all of it to a bitstring later.
-		 [{test,bs_match_string,F,[OtherCtx,[Bin1,Bin2]]}|Is0];
-	     Is0 ->
-		 Is0
-	 end,
-    {[{bs_restore2,CtxReg,{Ctx,Ivar}}|Is],Aft,St2}.
-
-select_extract_int(#k_var{name=Tl}, Val, #k_int{val=Sz}, U, Fs, Vf,
-		   I, Vdb, Bef, Ctx, St) ->
-    Bits = U*Sz,
-    Bin = case member(big, Fs) of
-	      true ->
-		  <<Val:Bits>>;
-	      false ->
-		  true = member(little, Fs),	%Assertion.
-		  <<Val:Bits/little>>
-	  end,
-    Bits = bit_size(Bin),			%Assertion.
-    CtxReg = fetch_var(Ctx, Bef),
-    Is = if
-	     Bits =:= 0 ->
-		 [{bs_save2,CtxReg,{Ctx,Tl}}];
-	     true ->
-		 [{test,bs_match_string,{f,Vf},[CtxReg,Bin]},
-		  {bs_save2,CtxReg,{Ctx,Tl}}]
-	 end,
-    {Is,clear_dead(Bef, I, Vdb),St}.
-
-select_extract_bin([#k_var{name=Hd},#k_var{name=Tl}], Size0, Unit, Type, Flags, Vf,
-		   I, Vdb, Bef, Ctx, _Body, St) ->
-    SizeReg = get_bin_size_reg(Size0, Bef),
-    {Es,Aft} =
-	case vdb_find(Hd, Vdb) of
-	    {_,_,Lhd} when Lhd =< I ->
-		%% The extracted value will not be used.
-		CtxReg = fetch_var(Ctx, Bef),
-		Live = max_reg(Bef#sr.reg),
-		Skip = build_skip_instr(Type, Vf, CtxReg, Live,
-					SizeReg, Unit, Flags),
-		{[Skip,{bs_save2,CtxReg,{Ctx,Tl}}],Bef};
-	    {_,_,_} ->
-		Reg = put_reg(Hd, Bef#sr.reg),
-		Int1 = Bef#sr{reg=Reg},
-		Rhd = fetch_reg(Hd, Reg),
-		CtxReg = fetch_reg(Ctx, Reg),
-		Live = max_reg(Bef#sr.reg),
-		{[build_bs_instr(Type, Vf, CtxReg, Live, SizeReg,
-				 Unit, Flags, Rhd),
-		  {bs_save2,CtxReg,{Ctx,Tl}}],Int1}
-	end,
-    {Es,clear_dead(Aft, I, Vdb),St};
-select_extract_bin([#k_var{name=Hd}], Size, Unit, binary, Flags, Vf,
-		   I, Vdb, Bef, Ctx, Body, St) ->
-    %% Match the last segment of a binary. We KNOW that the size
-    %% must be 'all'.
-    #k_atom{val=all} = Size,                    %Assertion.
-    {Es,Aft} =
-	case vdb_find(Hd, Vdb) of
-	    {_,_,Lhd} when Lhd =< I ->
-		%% The result will not be used. Furthermore, since we
-		%% we are at the end of the binary, the position will
-		%% not be used again; thus, it is safe to do a cheaper
-		%% test of the unit.
-		CtxReg = fetch_var(Ctx, Bef),
-		{case Unit of
-		     1 ->
-			 [];
-		     _ ->
-			 [{test,bs_test_unit,{f,Vf},[CtxReg,Unit]}]
-		 end,Bef};
-	    {_,_,_} ->
-		case is_context_unused(Body) of
-		    false ->
-			Reg = put_reg(Hd, Bef#sr.reg),
-			Int1 = Bef#sr{reg=Reg},
-			Rhd = fetch_reg(Hd, Reg),
-			CtxReg = fetch_reg(Ctx, Reg),
-			Name = bs_get_binary2,
-			Live = max_reg(Bef#sr.reg),
-			{[{test,Name,{f,Vf},Live,
-			   [CtxReg,atomic(Size),Unit,{field_flags,Flags}],Rhd}],
-			 Int1};
-		    true ->
-			%% Since the matching context will not be used again,
-			%% we can reuse its register. Reusing the register
-			%% opens some interesting optimizations in the
-			%% run-time system.
-
-			Reg0 = Bef#sr.reg,
-			CtxReg = fetch_reg(Ctx, Reg0),
-			Reg = replace_reg_contents(Ctx, Hd, Reg0),
-			Int1 = Bef#sr{reg=Reg},
-			Name = bs_get_binary2,
-			Live = max_reg(Int1#sr.reg),
-			{[{test,Name,{f,Vf},Live,
-			   [CtxReg,atomic(Size),Unit,{field_flags,Flags}],CtxReg}],
-			 Int1}
-		end
-	end,
-    {Es,clear_dead(Aft, I, Vdb),St}.
-
-%% is_context_unused(Ke) -> true | false
-%%   Simple heurististic to determine whether the code that follows
-%%   will use the current matching context again. (The liveness
-%%   information is too conservative to be useful for this purpose.)
-%%   'true' means that the code that follows will definitely not use
-%%   the context again (because it is a block, not guard or matching
-%%   code); 'false' that we are not sure (there could be more
-%%   matching).
-
-is_context_unused(#k_alt{then=Then}) ->
-    %% #k_alt{} can be used for different purposes. If the Then part
-    %% is a block, it means that matching has finished and is used for a guard
-    %% to choose between the matched clauses.
-    is_context_unused(Then);
-is_context_unused(#cg_block{}) ->
-    true;
-is_context_unused(_) ->
-    false.
-
-select_bin_end(#k_val_clause{val=#k_bin_end{},body=B}, Ivar, Tf, Bef, St0) ->
-    Ctx = St0#cg.ctx,
-    {Bis,Aft,St2} = match_cg(B, Tf, Bef, St0),
-    CtxReg = fetch_var(Ctx, Bef),
-    {[{bs_restore2,CtxReg,{Ctx,Ivar}},
-      {test,bs_test_tail2,{f,Tf},[CtxReg,0]}|Bis],Aft,St2}.
-
-get_bin_size_reg(#k_var{name=V}, Bef) ->
-    fetch_var(V, Bef);
-get_bin_size_reg(Literal, _Bef) ->
-    atomic(Literal).
-
-build_bs_instr(Type, Vf, CtxReg, Live, SizeReg, Unit, Flags, Rhd) ->
-    {Format,Name} = case Type of
-			integer -> {plain,bs_get_integer2};
-			float ->   {plain,bs_get_float2};
-			binary ->  {plain,bs_get_binary2};
-			utf8 ->    {utf,bs_get_utf8};
-			utf16 ->   {utf,bs_get_utf16};
-			utf32 ->   {utf,bs_get_utf32}
-		   end,
-    case Format of
-	plain ->
-	    {test,Name,{f,Vf},Live,
-	     [CtxReg,SizeReg,Unit,{field_flags,Flags}],Rhd};
-	utf ->
-	    {test,Name,{f,Vf},Live,
-	     [CtxReg,{field_flags,Flags}],Rhd}
-    end.
-
-build_skip_instr(Type, Vf, CtxReg, Live, SizeReg, Unit, Flags) ->
-    {Format,Name} = case Type of
-			utf8 -> {utf,bs_skip_utf8};
-			utf16 -> {utf,bs_skip_utf16};
-			utf32 -> {utf,bs_skip_utf32};
-			_ -> {plain,bs_skip_bits2}
-		    end,
-    case Format of
-	plain ->
-	    {test,Name,{f,Vf},[CtxReg,SizeReg,Unit,{field_flags,Flags}]};
-	utf ->
-	    {test,Name,{f,Vf},[CtxReg,Live,{field_flags,Flags}]}
-    end.
-
-select_val(#k_val_clause{val=#k_tuple{es=Es},body=B,anno=#l{i=I,vdb=Vdb}},
-           V, Vf, Bef, St0) ->
-    {Eis,Int,St1} = select_extract_tuple(V, Es, I, Vdb, Bef, St0),
-    {Bis,Aft,St2} = match_cg(B, Vf, Int, St1),
-    {length(Es),Eis ++ Bis,Aft,St2};
-select_val(#k_val_clause{val=Val0,body=B}, _V, Vf, Bef, St0) ->
-    Val = case Val0 of
-              #k_atom{val=Lit} -> Lit;
-              #k_float{val=Lit} -> Lit;
-              #k_int{val=Lit} -> Lit;
-              #k_literal{val=Lit} -> Lit
-          end,
-    {Bis,Aft,St1} = match_cg(B, Vf, Bef, St0),
-    {Val,Bis,Aft,St1}.
-
-%% select_extract_tuple(Src, [V], I, Vdb, StackReg, State) ->
-%%      {[E],StackReg,State}.
-%%  Extract tuple elements, but only if they do not immediately die.
-
-select_extract_tuple(Src, Vs, I, Vdb, Bef, St) ->
-    F = fun (#k_var{name=V}, {Int0,Elem}) ->
-		case vdb_find(V, Vdb) of
-		    {V,_,L} when L =< I -> {[], {Int0,Elem+1}};
-		    _Other ->
-			Reg1 = put_reg(V, Int0#sr.reg),
-			Int1 = Int0#sr{reg=Reg1},
-			Rsrc = fetch_var(Src, Int1),
-			{[{get_tuple_element,Rsrc,Elem,fetch_reg(V, Reg1)}],
-			 {Int1,Elem+1}}
-		end
-	end,
-    {Es,{Aft,_}} = flatmapfoldl(F, {Bef,0}, Vs),
-    {Es,Aft,St}.
-
-select_map(Scs, V, Tf, Vf, Bef, St0) ->
-    Reg = fetch_var(V, Bef),
-    {Is,Aft,St1} =
-	match_fmf(fun(#k_val_clause{val=#k_map{op=exact,es=Es},
-                                    body=B,anno=#l{i=I,vdb=Vdb}}, Fail, St1) ->
-                          select_map_val(V, Es, B, Fail, I, Vdb, Bef, St1)
-                  end, Vf, St0, Scs),
-    {[{test,is_map,{f,Tf},[Reg]}|Is],Aft,St1}.
-
-select_map_val(V, Es, B, Fail, I, Vdb, Bef, St0) ->
-    {Eis,Int,St1} = select_extract_map(V, Es, Fail, I, Vdb, Bef, St0),
-    {Bis,Aft,St2} = match_cg(B, Fail, Int, St1),
-    {Eis++Bis,Aft,St2}.
-
-select_extract_map(_, [], _, _, _, Bef, St) -> {[],Bef,St};
-select_extract_map(Src, Vs, Fail, I, Vdb, Bef, St) ->
-    %% First split the instruction flow
-    %% We want one set of each
-    %% 1) has_map_fields (no target registers)
-    %% 2) get_map_elements (with target registers)
-    %% Assume keys are term-sorted
-    Rsrc = fetch_var(Src, Bef),
-
-    {{HasKs,GetVs,HasVarKs,GetVarVs},Aft} =
-        foldr(fun(#k_map_pair{key=#k_var{name=K},val=#k_var{name=V}},
-                  {{HasKsi,GetVsi,HasVarVsi,GetVarVsi},Int0}) ->
-                      case vdb_find(V, Vdb) of
-                          {V,_,L} when L =< I ->
-                              RK = fetch_var(K,Int0),
-                              {{HasKsi,GetVsi,[RK|HasVarVsi],GetVarVsi},Int0};
-                          _Other ->
-                              Reg1 = put_reg(V, Int0#sr.reg),
-                              Int1 = Int0#sr{reg=Reg1},
-                              RK = fetch_var(K,Int0),
-                              RV = fetch_reg(V,Reg1),
-                              {{HasKsi,GetVsi,HasVarVsi,[[RK,RV]|GetVarVsi]},Int1}
-                      end;
-                 (#k_map_pair{key=Key,val=#k_var{name=V}},
-                  {{HasKsi,GetVsi,HasVarVsi,GetVarVsi},Int0}) ->
-                      case vdb_find(V, Vdb) of
-                          {V,_,L} when L =< I ->
-                              {{[atomic(Key)|HasKsi],GetVsi,HasVarVsi,GetVarVsi},Int0};
-                          _Other ->
-                              Reg1 = put_reg(V, Int0#sr.reg),
-                              Int1 = Int0#sr{reg=Reg1},
-                              {{HasKsi,[atomic(Key),fetch_reg(V, Reg1)|GetVsi],
-                                HasVarVsi,GetVarVsi},Int1}
-                      end
-              end, {{[],[],[],[]},Bef}, Vs),
-
-    Code = [{test,has_map_fields,{f,Fail},Rsrc,{list,HasKs}} || HasKs =/= []] ++
-	   [{test,has_map_fields,{f,Fail},Rsrc,{list,[K]}}   || K <- HasVarKs] ++
-	   [{get_map_elements,   {f,Fail},Rsrc,{list,GetVs}} || GetVs =/= []] ++
-	   [{get_map_elements,   {f,Fail},Rsrc,{list,[K,V]}} || [K,V] <- GetVarVs],
-    {Code, Aft, St}.
-
-
-select_extract_cons(Src, [#k_var{name=Hd},#k_var{name=Tl}], I, Vdb, Bef, St) ->
-    Rsrc = fetch_var(Src, Bef),
-    Int = clear_dead(Bef, I, Vdb),
-    {{_,_,Lhd},{_,_,Ltl}} = {vdb_find(Hd, Vdb),vdb_find(Tl, Vdb)},
-    case {Lhd =< I, Ltl =< I} of
-        {true,true} ->
-            %% Both dead.
-            {[],Bef,St};
-        {true,false} ->
-            %% Head dead.
-            Reg0 = put_reg(Tl, Bef#sr.reg),
-            Aft = Int#sr{reg=Reg0},
-            Rtl = fetch_reg(Tl, Reg0),
-            {[{get_tl,Rsrc,Rtl}],Aft,St};
-        {false,true} ->
-            %% Tail dead.
-            Reg0 = put_reg(Hd, Bef#sr.reg),
-            Aft = Int#sr{reg=Reg0},
-            Rhd = fetch_reg(Hd, Reg0),
-            {[{get_hd,Rsrc,Rhd}],Aft,St};
-        {false,false} ->
-            %% Both used.
-            Reg0 = put_reg(Tl, put_reg(Hd, Bef#sr.reg)),
-            Aft = Bef#sr{reg=Reg0},
-            Rhd = fetch_reg(Hd, Reg0),
-            Rtl = fetch_reg(Tl, Reg0),
-            {[{get_hd,Rsrc,Rhd},{get_tl,Rsrc,Rtl}],Aft,St}
-    end.
-
-guard_clause_cg(#k_guard_clause{anno=#l{vdb=Vdb},guard=G,body=B}, Fail, Bef, St0) ->
-    {Gis,Int,St1} = guard_cg(G, Fail, Vdb, Bef, St0),
-    {Bis,Aft,St} = match_cg(B, Fail, Int, St1),
-    {Gis ++ Bis,Aft,St}.
-
-%% guard_cg(Guard, Fail, Vdb, StackReg, State) ->
-%%      {[Ainstr],StackReg,State}.
-%%  A guard is a boolean expression of tests.  Tests return true or
-%%  false.  A fault in a test causes the test to return false.  Tests
-%%  never return the boolean, instead we generate jump code to go to
-%%  the correct exit point.  Primops and tests all go to the next
-%%  instruction on success or jump to a failure label.
-
-guard_cg(#k_protected{arg=Ts,ret=Rs,anno=#l{vdb=Pdb}}, Fail, _Vdb, Bef, St) ->
-    protected_cg(Ts, Rs, Fail, Pdb, Bef, St);
-guard_cg(#k_test{anno=#l{i=I},op=Test0,args=As,inverted=Inverted},
-         Fail, Vdb, Bef, St0) ->
-    #k_remote{mod=#k_atom{val=erlang},name=#k_atom{val=Test}} = Test0,
-    case Inverted of
-	false ->
-	    test_cg(Test, As, Fail, I, Vdb, Bef, St0);
-	true ->
-	    {Psucc,St1} = new_label(St0),
-	    {Is,Aft,St2} = test_cg(Test, As, Psucc, I, Vdb, Bef, St1),
-	    {Is++[{jump,{f,Fail}},{label,Psucc}],Aft,St2}
-    end;
-guard_cg(G, _Fail, Vdb, Bef, St) ->
-    %%ok = io:fwrite("cg ~w: ~p~n", [?LINE,{G,Fail,Vdb,Bef}]),
-    {Gis,Aft,St1} = cg(G, Vdb, Bef, St),
-    %%ok = io:fwrite("cg ~w: ~p~n", [?LINE,{Aft}]),
-    {Gis,Aft,St1}.
-
-%% guard_cg_list([Kexpr], Fail, I, Vdb, StackReg, St) ->
-%%      {[Ainstr],StackReg,St}.
-
-guard_cg_list(Kes, Fail, Vdb, Bef, St0) ->
-    {Keis,{Aft,St1}} =
-	flatmapfoldl(fun (Ke, {Inta,Sta}) ->
-			     {Keis,Intb,Stb} =
-				 guard_cg(Ke, Fail, Vdb, Inta, Sta),
-			     {Keis,{Intb,Stb}}
-		     end, {Bef,St0}, need_heap(Kes)),
-    {Keis,Aft,St1}.
-
-%% protected_cg([Kexpr], [Ret], Fail, I, Vdb, Bef, St) -> {[Ainstr],Aft,St}.
-%%  Do a protected.  Protecteds without return values are just done
-%%  for effect, the return value is not checked, success passes on to
-%%  the next instruction and failure jumps to Fail.  If there are
-%%  return values then these must be set to 'false' on failure,
-%%  control always passes to the next instruction.
-
-protected_cg(Ts, [], Fail, Vdb, Bef, St0) ->
-    %% Protect these calls, revert when done.
-    {Tis,Aft,St1} = guard_cg_list(Ts, Fail, Vdb, Bef, St0#cg{bfail=Fail}),
-    {Tis,Aft,St1#cg{bfail=St0#cg.bfail}};
-protected_cg(Ts, Rs, _Fail, Vdb, Bef, St0) ->
-    {Pfail,St1} = new_label(St0),
-    {Psucc,St2} = new_label(St1),
-    {Tis,Aft,St3} = guard_cg_list(Ts, Pfail, Vdb, Bef,
-				  St2#cg{bfail=Pfail}),
-    %%ok = io:fwrite("cg ~w: ~p~n", [?LINE,{Rs,I,Vdb,Aft}]),
-    %% Set return values to false.
-    Mis = [{move,{atom,false},fetch_var(V,Aft)}||#k_var{name=V} <- Rs],
-    {Tis ++ [{jump,{f,Psucc}},
-	     {label,Pfail}] ++ Mis ++ [{label,Psucc}],
-     Aft,St3#cg{bfail=St0#cg.bfail}}.    
-
-%% test_cg(TestName, Args, Fail, I, Vdb, Bef, St) -> {[Ainstr],Aft,St}.
-%%  Generate test instruction.  Use explicit fail label here.
-
-test_cg(is_map, [A], Fail, I, Vdb, Bef, St) ->
-    %% We must avoid creating code like this:
-    %%
-    %%   move x(0) y(0)
-    %%   is_map Fail [x(0)]
-    %%   make_fun => x(0)  %% Overwrite x(0)
-    %%   put_map_assoc y(0) ...
-    %%
-    %% The code is safe, but beam_validator does not understand that.
-    %% Extending beam_validator to handle such (rare) code as the
-    %% above would make it slower for all programs. Instead, change
-    %% the code generator to always prefer the Y register for is_map()
-    %% and put_map_assoc() instructions, ensuring that they use the
-    %% same register.
-    Arg = cg_reg_arg_prefer_y(A, Bef),
-    Aft = clear_dead(Bef, I, Vdb),
-    {[{test,is_map,{f,Fail},[Arg]}],Aft,St};
-test_cg(is_boolean, [#k_atom{val=Val}], Fail, I, Vdb, Bef, St) ->
-    Aft = clear_dead(Bef, I, Vdb),
-    Is = case is_boolean(Val) of
-	     true -> [];
-	     false -> [{jump,{f,Fail}}]
-	 end,
-    {Is,Aft,St};
-test_cg(Test, As, Fail, I, Vdb, Bef, St) ->
-    Args = cg_reg_args(As, Bef),
-    Aft = clear_dead(Bef, I, Vdb),
-    {[beam_utils:bif_to_test(Test, Args, {f,Fail})],Aft,St}.
-
-%% match_fmf(Fun, LastFail, State, [Clause]) -> {Is,Aft,State}.
-%%  This is a special flatmapfoldl for match code gen where we
-%%  generate a "failure" label for each clause. The last clause uses
-%%  an externally generated failure label, LastFail.  N.B. We do not
-%%  know or care how the failure labels are used.
-
-match_fmf(F, LastFail, St, [H]) ->
-    F(H, LastFail, St);
-match_fmf(F, LastFail, St0, [H|T]) ->
-    {Fail,St1} = new_label(St0),
-    {R,Aft1,St2} = F(H, Fail, St1),
-    {Rs,Aft2,St3} = match_fmf(F, LastFail, St2, T),
-    {R ++ [{label,Fail}] ++ Rs,sr_merge(Aft1, Aft2),St3}.
-
-%% call_cg(Func, [Arg], [Ret], Le, Vdb, StackReg, State) ->
-%%      {[Ainstr],StackReg,State}.
-%% enter_cg(Func, [Arg], Le, Vdb, Bef, St) -> {[Ainstr],Aft,St}.
-%%  Call and enter first put the arguments into registers and save any
-%%  other registers, then clean up and compress the stack and set the
-%%  frame size. Finally the actual call is made.  Call then needs the
-%%  return values filled in.
-
-call_cg(#k_var{}=Var, As, Rs, Le, Vdb, Bef, St0) ->
-    {Sis,Int} = cg_setup_call(As++[Var], Bef, Le#l.i, Vdb),
-    %% Put return values in registers.
-    Reg = load_vars(Rs, clear_regs(Int#sr.reg)),
-    %% Build complete code and final stack/register state.
-    Arity = length(As),
-    {Frees,Aft} = free_dead(clear_dead(Int#sr{reg=Reg}, Le#l.i, Vdb)),
-    {Sis ++ Frees ++ [line(Le),{call_fun,Arity}],Aft,
-     need_stack_frame(St0)};
-call_cg(#k_remote{mod=Mod,name=Name}, As, Rs, Le, Vdb, Bef, St0)
-  when is_record(Mod, k_var); is_record(Name, k_var) ->
-    {Sis,Int} = cg_setup_call(As++[Mod,Name], Bef, Le#l.i, Vdb),
-    %% Put return values in registers.
-    Reg = load_vars(Rs, clear_regs(Int#sr.reg)),
-    %% Build complete code and final stack/register state.
-    Arity = length(As),
-    St = need_stack_frame(St0),
-    %%{Call,St1} = build_call(Func, Arity, St0),
-    {Frees,Aft} = free_dead(clear_dead(Int#sr{reg=Reg}, Le#l.i, Vdb)),
-    {Sis ++ Frees ++ [line(Le),{apply,Arity}],Aft,St};
-call_cg(Func, As, Rs, Le, Vdb, Bef, St0) ->
-    case St0 of
-	#cg{bfail=Fail} when Fail =/= 0 ->
-	    %% Inside a guard. The only allowed function call is to
-	    %% erlang:error/1,2. We will generate the following code:
-	    %%
-	    %%     move {atom,ok} DestReg
-	    %%     jump FailureLabel
-	    #k_remote{mod=#k_atom{val=erlang},
-                      name=#k_atom{val=error}} = Func, %Assertion.
-	    [#k_var{name=DestVar}] = Rs,
-	    Int0 = clear_dead(Bef, Le#l.i, Vdb),
-	    Reg = put_reg(DestVar, Int0#sr.reg),
-	    Int = Int0#sr{reg=Reg},
-	    Dst = fetch_reg(DestVar, Reg),
-	    {[{move,{atom,ok},Dst},{jump,{f,Fail}}],
-	     clear_dead(Int, Le#l.i, Vdb),St0};
-	#cg{} ->
-	    %% Ordinary function call in a function body.
-	    {Sis,Int} = cg_setup_call(As, Bef, Le#l.i, Vdb),
-	    %% Put return values in registers.
-	    Reg = load_vars(Rs, clear_regs(Int#sr.reg)),
-	    %% Build complete code and final stack/register state.
-	    Arity = length(As),
-	    {Call,St1} = build_call(Func, Arity, St0),
-	    {Frees,Aft} = free_dead(clear_dead(Int#sr{reg=Reg}, Le#l.i, Vdb)),
-	    {Sis ++ Frees ++ [line(Le)|Call],Aft,St1}
-    end.
-
-build_call(#k_remote{mod=#k_atom{val=erlang},name=#k_atom{val='!'}}, 2, St0) ->
-    {[send],need_stack_frame(St0)};
-build_call(#k_remote{mod=#k_atom{val=Mod},name=#k_atom{val=Name}}, Arity, St0) ->
-    {[{call_ext,Arity,{extfunc,Mod,Name,Arity}}],need_stack_frame(St0)};
-build_call(#k_local{name=Name}, Arity, St0) when is_atom(Name) ->
-    {Lbl,St1} = local_func_label(Name, Arity, need_stack_frame(St0)),
-    {[{call,Arity,{f,Lbl}}],St1}.
-
-free_dead(#sr{stk=Stk0}=Aft) ->
-    {Instr,Stk} = free_dead(Stk0, 0, [], []),
-    {Instr,Aft#sr{stk=Stk}}.
-
-free_dead([dead|Stk], Y, Instr, StkAcc) ->
-    %% Note: kill/1 is equivalent to init/1 (translated by beam_asm).
-    %% We use kill/1 to help further optimisation passes.
-    free_dead(Stk, Y+1, [{kill,{yy,Y}}|Instr], [free|StkAcc]);
-free_dead([Any|Stk], Y, Instr, StkAcc) ->
-    free_dead(Stk, Y+1, Instr, [Any|StkAcc]);
-free_dead([], _, Instr, StkAcc) -> {Instr,reverse(StkAcc)}.
-
-enter_cg(#k_var{} = Var, As, Le, Vdb, Bef, St0) ->
-    {Sis,Int} = cg_setup_call(As++[Var], Bef, Le#l.i, Vdb),
-    %% Build complete code and final stack/register state.
-    Arity = length(As),
-    {Sis ++ [line(Le),{call_fun,Arity},return],
-     clear_dead(Int#sr{reg=clear_regs(Int#sr.reg)}, Le#l.i, Vdb),
-     need_stack_frame(St0)};
-enter_cg(#k_remote{mod=Mod,name=Name}, As, Le, Vdb, Bef, St0)
-  when is_record(Mod, k_var); is_record(Name, k_var) ->
-    {Sis,Int} = cg_setup_call(As++[Mod,Name], Bef, Le#l.i, Vdb),
-    %% Build complete code and final stack/register state.
-    Arity = length(As),
-    St = need_stack_frame(St0),
-    {Sis ++ [line(Le),{apply_only,Arity}],
-     clear_dead(Int#sr{reg=clear_regs(Int#sr.reg)}, Le#l.i, Vdb),
-     St};
-enter_cg(Func, As, Le, Vdb, Bef, St0) ->
-    {Sis,Int} = cg_setup_call(As, Bef, Le#l.i, Vdb),
-    %% Build complete code and final stack/register state.
-    Arity = length(As),
-    {Call,St1} = build_enter(Func, Arity, St0),
-    Line = enter_line(Func, Arity, Le),
-    {Sis ++ Line ++ Call,
-     clear_dead(Int#sr{reg=clear_regs(Int#sr.reg)}, Le#l.i, Vdb),
-     St1}.
-
-build_enter(#k_remote{mod=#k_atom{val=erlang},name=#k_atom{val='!'}}, 2, St0) ->
-    {[send,return],need_stack_frame(St0)};
-build_enter(#k_remote{mod=#k_atom{val=Mod},name=#k_atom{val=Name}}, Arity, St0) ->
-    St1 = case trap_bif(Mod, Name, Arity) of
-	      true -> need_stack_frame(St0);
-	      false -> St0
-	  end,
-    {[{call_ext_only,Arity,{extfunc,Mod,Name,Arity}}],St1};
-build_enter(#k_local{name=Name}, Arity, St0) when is_atom(Name) ->
-    {Lbl,St1} = local_func_label(Name, Arity, St0),
-    {[{call_only,Arity,{f,Lbl}}],St1}.
-
-enter_line(#k_remote{mod=#k_atom{val=Mod},name=#k_atom{val=Name}}, Arity, Le) ->
-    case erl_bifs:is_safe(Mod, Name, Arity) of
-	false ->
-	    %% Tail-recursive call, possibly to a BIF.
-	    %% We'll need a line instruction in case the
-	    %% BIF call fails.
-	    [line(Le)];
-	true ->
-	    %% Call to a safe BIF. Since it cannot fail,
-	    %% we don't need any line instruction here.
-	    []
-    end;
-enter_line(_, _, _) ->
-    %% Tail-recursive call to a local function. A line
-    %% instruction will not be useful.
-    [].
-
-%% local_func_label(Name, Arity, State) -> {Label,State'}
-%% local_func_label({Name,Arity}, State) -> {Label,State'}
-%%  Get the function entry label for a local function.
-
-local_func_label(Name, Arity, St) ->
-    local_func_label({Name,Arity}, St).
-
-local_func_label(Key, #cg{functable=Map}=St0) ->
-    case Map of
-        #{Key := Label} -> {Label,St0};
-        _ ->
-  	    {Label,St} = new_label(St0),
-	    {Label,St#cg{functable=Map#{Key => Label}}}
-    end.
-
-%% need_stack_frame(State) -> State'
-%%  Make a note in the state that this function will need a stack frame.
-
-need_stack_frame(#cg{need_frame=true}=St) -> St;
-need_stack_frame(St) -> St#cg{need_frame=true}.
-
-%% trap_bif(Mod, Name, Arity) -> true|false
-%%   Trap bifs that need a stack frame.
-
-trap_bif(erlang, link, 1) -> true;
-trap_bif(erlang, unlink, 1) -> true;
-trap_bif(erlang, monitor_node, 2) -> true;
-trap_bif(erlang, group_leader, 2) -> true;
-trap_bif(erlang, exit, 2) -> true;
-trap_bif(_, _, _) -> false.
-
-%% bif_cg(#k_bif{}, Le, Vdb, StackReg, State) ->
-%%      {[Ainstr],StackReg,State}.
-%%  Generate code a BIF.
-
-bif_cg(#k_bif{op=#k_internal{name=Name},args=As,ret=Rs}, Le, Vdb, Bef, St) ->
-    internal_cg(Name, As, Rs, Le, Vdb, Bef, St);
-bif_cg(#k_bif{op=#k_remote{mod=#k_atom{val=erlang},name=#k_atom{val=Name}},
-              args=As,ret=Rs}, Le, Vdb, Bef, St) ->
-    Ar = length(As),
-    case is_gc_bif(Name, Ar) of
-	false ->
-            bif_cg(Name, As, Rs, Le, Vdb, Bef, St);
-	true ->
-            gc_bif_cg(Name, As, Rs, Le, Vdb, Bef, St)
-    end.
-
-%% internal_cg(Bif, [Arg], [Ret], Le, Vdb, StackReg, State) ->
-%%      {[Ainstr],StackReg,State}.
-
-internal_cg(bs_context_to_binary=Instr, [Src0], [], Le, Vdb, Bef, St0) ->
-    [Src] = cg_reg_args([Src0], Bef),
-    {[{Instr,Src}],clear_dead(Bef, Le#l.i, Vdb), St0};
-internal_cg(dsetelement, [Index0,Tuple0,New0], _Rs, Le, Vdb, Bef, St0) ->
-    [New,Tuple,{integer,Index1}] = cg_reg_args([New0,Tuple0,Index0], Bef),
-    Index = Index1-1,
-    {[{set_tuple_element,New,Tuple,Index}],
-     clear_dead(Bef, Le#l.i, Vdb), St0};
-internal_cg(make_fun, [Func0,Arity0|As], Rs, Le, Vdb, Bef, St0) ->
-    %% This behaves more like a function call.
-    #k_atom{val=Func} = Func0,
-    #k_int{val=Arity} = Arity0,
-    {Sis,Int} = cg_setup_call(As, Bef, Le#l.i, Vdb),
-    Reg = load_vars(Rs, clear_regs(Int#sr.reg)),
-    {FuncLbl,St1} = local_func_label(Func, Arity, St0),
-    MakeFun = {make_fun2,{f,FuncLbl},0,0,length(As)},
-    {Sis ++ [MakeFun],
-     clear_dead(Int#sr{reg=Reg}, Le#l.i, Vdb),
-     St1};
-internal_cg(bs_init_writable=I, As, Rs, Le, Vdb, Bef, St) ->
-    %% This behaves like a function call.
-    {Sis,Int} = cg_setup_call(As, Bef, Le#l.i, Vdb),
-    Reg = load_vars(Rs, clear_regs(Int#sr.reg)),
-    {Sis++[I],clear_dead(Int#sr{reg=Reg}, Le#l.i, Vdb),St};
-internal_cg(build_stacktrace=I, As, Rs, Le, Vdb, Bef, St) ->
-    %% This behaves like a function call.
-    {Sis,Int} = cg_setup_call(As, Bef, Le#l.i, Vdb),
-    Reg = load_vars(Rs, clear_regs(Int#sr.reg)),
-    {Sis++[I],clear_dead(Int#sr{reg=Reg}, Le#l.i, Vdb),St};
-internal_cg(raise, As, Rs, Le, Vdb, Bef, St) ->
-    %% raise can be treated like a guard BIF.
-    bif_cg(raise, As, Rs, Le, Vdb, Bef, St);
-internal_cg(guard_error, [ExitCall], _Rs, Le, Vdb, Bef, St) ->
-    %% A call an exit BIF from inside a #k_guard_match{}.
-    %% Generate a standard call, but leave the register descriptors
-    %% alone, effectively pretending that there was no call.
-    #k_call{op=#k_remote{mod=#k_atom{val=Mod},name=#k_atom{val=Name}},
-            args=As} = ExitCall,
-    Arity = length(As),
-    {Ms,_} = cg_call_args(As, Bef, Le#l.i, Vdb),
-    Call = {call_ext,Arity,{extfunc,Mod,Name,Arity}},
-    Is = Ms++[line(Le),Call],
-    {Is,Bef,St};
-internal_cg(raw_raise=I, As, Rs, Le, Vdb, Bef, St) ->
-    %% This behaves like a function call.
-    {Sis,Int} = cg_setup_call(As, Bef, Le#l.i, Vdb),
-    Reg = load_vars(Rs, clear_regs(Int#sr.reg)),
-    {Sis++[I],clear_dead(Int#sr{reg=Reg}, Le#l.i, Vdb),St}.
-
-%% bif_cg(Bif, [Arg], [Ret], Le, Vdb, StackReg, State) ->
-%%      {[Ainstr],StackReg,State}.
-
-bif_cg(Bif, As, [#k_var{name=V}], Le, Vdb, Bef, St0) ->
-    Ars = cg_reg_args(As, Bef),
-
-    %% If we are inside a catch and in a body (not in guard) and the
-    %% BIF may fail, we must save everything that will be alive after
-    %% the catch (because the code after the code assumes that all
-    %% variables that are live are stored on the stack).
-    %%
-    %%   Currently, we are somewhat pessimistic in
-    %% that we save any variable that will be live after this BIF call.
-
-    MayFail = not erl_bifs:is_safe(erlang, Bif, length(As)),
-    {Sis,Int0} =
-	case MayFail of
-	    true ->
-		maybe_adjust_stack(Bef, Le#l.i, Le#l.i+1, Vdb, St0);
-	    false ->
-		{[],Bef}
-	end,
-    Int1 = clear_dead(Int0, Le#l.i, Vdb),
-    Reg = put_reg(V, Int1#sr.reg),
-    Int = Int1#sr{reg=Reg},
-    Dst = fetch_reg(V, Reg),
-    BifFail = {f,St0#cg.bfail},
-    %% We need a line instructions for BIFs that may fail in a body.
-    Line = case BifFail of
-	       {f,0} when MayFail ->
-		   [line(Le)];
-	       _ ->
-		   []
-	   end,
-    {Sis++Line++[{bif,Bif,BifFail,Ars,Dst}],
-     clear_dead(Int, Le#l.i, Vdb), St0}.
-
-
-%% gc_bif_cg(Bif, [Arg], [Ret], Le, Vdb, StackReg, State) ->
-%%      {[Ainstr],StackReg,State}.
-
-gc_bif_cg(Bif, As, [#k_var{name=V}], Le, Vdb, Bef, St0) ->
-    Ars = cg_reg_args(As, Bef),
-
-    %% If we are inside a catch and in a body (not in guard) and the
-    %% BIF may fail, we must save everything that will be alive after
-    %% the catch (because the code after the code assumes that all
-    %% variables that are live are stored on the stack).
-    %%
-    %%   Currently, we are somewhat pessimistic in
-    %% that we save any variable that will be live after this BIF call.
-
-    {Sis,Int0} = maybe_adjust_stack(Bef, Le#l.i, Le#l.i+1, Vdb, St0),
-
-    Int1 = clear_dead(Int0, Le#l.i, Vdb),
-    Reg = put_reg(V, Int1#sr.reg),
-    Int = Int1#sr{reg=Reg},
-    Dst = fetch_reg(V, Reg),
-    BifFail = {f,St0#cg.bfail},
-    Line = case BifFail of
-	       {f,0} -> [line(Le)];
-	       {f,_} -> []
-	   end,
-    {Sis++Line++[{gc_bif,Bif,BifFail,max_reg(Bef#sr.reg),Ars,Dst}],
-     clear_dead(Int, Le#l.i, Vdb), St0}.
-
-%% recv_loop_cg(TimeOut, ReceiveVar, ReceiveMatch, TimeOutExprs,
-%%              [Ret], Le, Vdb, Bef, St) -> {[Ainstr],Aft,St}.
-
-recv_loop_cg(Te, Rvar, Rm, Tes, Rs, Le, Vdb, Bef, St0) ->
-    {Sis,Int0} = adjust_stack(Bef, Le#l.i, Le#l.i, Vdb),
-    Int1 = Int0#sr{reg=clear_regs(Int0#sr.reg)},
-    %% Get labels.
-    {Rl,St1} = new_label(St0),
-    {Tl,St2} = new_label(St1),
-    {Bl,St3} = new_label(St2),
-    St4 = St3#cg{break=Bl,recv=Rl},		%Set correct receive labels
-    {Ris,Raft,St5} = cg_recv_mesg(Rvar, Rm, Tl, Int1, St4),
-    {Wis,Taft,St6} = cg_recv_wait(Te, Tes, Le#l.i, Int1, St5),
-    Int2 = sr_merge(Raft, Taft),		%Merge stack/registers
-    Reg = load_vars(Rs, Int2#sr.reg),
-    {Sis ++ [line(Le)] ++ Ris ++ [{label,Tl}] ++ Wis ++ [{label,Bl}],
-     clear_dead(Int2#sr{reg=Reg}, Le#l.i, Vdb),
-     St6#cg{break=St0#cg.break,recv=St0#cg.recv}}.
-
-%% cg_recv_mesg( ) -> {[Ainstr],Aft,St}.
-
-cg_recv_mesg(#k_var{name=R}, Rm, Tl, Bef, St0) ->
-    Int0 = Bef#sr{reg=put_reg(R, Bef#sr.reg)},
-    Ret = fetch_reg(R, Int0#sr.reg),
-    %% Int1 = clear_dead(Int0, I, Rm#l.vdb),
-    Int1 = Int0,
-    {Mis,Int2,St1} = match_cg(Rm, none, Int1, St0),
-    {[{label,St1#cg.recv},{loop_rec,{f,Tl},Ret}|Mis],Int2,St1}.
-
-%% cg_recv_wait(Te, Tes, I, Vdb, Int2, St3) -> {[Ainstr],Aft,St}.
-
-cg_recv_wait(#k_atom{val=infinity}, #cg_block{anno=Le,es=Tes}, I, Bef, St0) ->
-    %% We know that the 'after' body will never be executed.
-    %% But to keep the stack and register information up to date,
-    %% we will generate the code for the 'after' body, and then discard it.
-    Int1 = clear_dead(Bef, I, Le#l.vdb),
-    {_,Int2,St1} = cg_block(Tes, Le#l.vdb,
-                            Int1#sr{reg=clear_regs(Int1#sr.reg)}, St0),
-    {[{wait,{f,St1#cg.recv}}],Int2,St1};
-cg_recv_wait(#k_int{val=0}, #cg_block{anno=Le,es=Tes}, _I, Bef, St0) ->
-    {Tis,Int,St1} = cg_block(Tes, Le#l.vdb, Bef, St0),
-    {[timeout|Tis],Int,St1};
-cg_recv_wait(Te, #cg_block{anno=Le,es=Tes}, I, Bef, St0) ->
-    Reg = cg_reg_arg(Te, Bef),
-    %% Must have empty registers here!  Bug if anything in registers.
-    Int0 = clear_dead(Bef, I, Le#l.vdb),
-    {Tis,Int,St1} = cg_block(Tes, Le#l.vdb,
-			     Int0#sr{reg=clear_regs(Int0#sr.reg)}, St0),
-    {[{wait_timeout,{f,St1#cg.recv},Reg},timeout] ++ Tis,Int,St1}.
-
-%% recv_next_cg(Le, Vdb, StackReg, St) -> {[Ainstr],StackReg,St}.
-%%  Use adjust stack to clear stack, but only need it for Aft.
-
-recv_next_cg(Le, Vdb, Bef, St) ->
-    {Sis,Aft} = adjust_stack(Bef, Le#l.i, Le#l.i+1, Vdb),
-    {[{loop_rec_end,{f,St#cg.recv}}] ++ Sis,Aft,St}.	%Joke
-
-%% try_cg(TryBlock, [BodyVar], TryBody, [ExcpVar], TryHandler, [Ret],
-%%        Le, Vdb, StackReg, St) -> {[Ainstr],StackReg,St}.
-
-try_cg(Ta, Vs, Tb, Evs, Th, Rs, Le, Vdb, Bef, St0) ->
-    {B,St1} = new_label(St0),			%Body label
-    {H,St2} = new_label(St1),			%Handler label
-    {E,St3} = new_label(St2),			%End label
-    #l{i=TryTag} = get_kanno(Ta),
-    Int1 = Bef#sr{stk=put_catch(TryTag, Bef#sr.stk)},
-    TryReg = fetch_stack({catch_tag,TryTag}, Int1#sr.stk),
-    {Ais,Int2,St4} = cg(Ta, Vdb, Int1, St3#cg{break=B,in_catch=true}),
-    Int3 = Int2#sr{stk=drop_catch(TryTag, Int2#sr.stk)},
-    St5 = St4#cg{break=E,in_catch=St3#cg.in_catch},
-    {Bis,Baft,St6} = cg(Tb, Vdb, Int3#sr{reg=load_vars(Vs, Int3#sr.reg)}, St5),
-    {His,Haft,St7} = cg(Th, Vdb, Int3#sr{reg=load_vars(Evs, Int3#sr.reg)}, St6),
-    Int4 = sr_merge(Baft, Haft),		%Merge stack/registers
-    Aft = Int4#sr{reg=load_vars(Rs, Int4#sr.reg)},
-    {[{'try',TryReg,{f,H}}] ++ Ais ++ 
-     [{label,B},{try_end,TryReg}] ++ Bis ++
-     [{label,H},{try_case,TryReg}] ++ His ++
-     [{label,E}],
-     clear_dead(Aft, Le#l.i, Vdb),
-     St7#cg{break=St0#cg.break}}.     
-
-try_enter_cg(Ta, Vs, Tb, Evs, Th, Le, Vdb, Bef, St0) ->
-    {B,St1} = new_label(St0),			%Body label
-    {H,St2} = new_label(St1),			%Handler label
-    #l{i=TryTag} = get_kanno(Ta),
-    Int1 = Bef#sr{stk=put_catch(TryTag, Bef#sr.stk)},
-    TryReg = fetch_stack({catch_tag,TryTag}, Int1#sr.stk),
-    {Ais,Int2,St3} = cg(Ta, Vdb, Int1, St2#cg{break=B,in_catch=true}),
-    Int3 = Int2#sr{stk=drop_catch(TryTag, Int2#sr.stk)},
-    St4 = St3#cg{in_catch=St2#cg.in_catch},
-    {Bis,Baft,St5} = cg(Tb, Vdb, Int3#sr{reg=load_vars(Vs, Int3#sr.reg)}, St4),
-    {His,Haft,St6} = cg(Th, Vdb, Int3#sr{reg=load_vars(Evs, Int3#sr.reg)}, St5),
-    Int4 = sr_merge(Baft, Haft),		%Merge stack/registers
-    Aft = Int4,
-    {[{'try',TryReg,{f,H}}] ++ Ais ++ 
-     [{label,B},{try_end,TryReg}] ++ Bis ++
-     [{label,H},{try_case,TryReg}] ++ His,
-     clear_dead(Aft, Le#l.i, Vdb),
-     St6#cg{break=St0#cg.break}}.     
-
-%% catch_cg(CatchBlock, Ret, Le, Vdb, Bef, St) -> {[Ainstr],Aft,St}.
-
-catch_cg(#cg_block{es=C}, #k_var{name=R}, Le, Vdb, Bef, St0) ->
-    {B,St1} = new_label(St0),
-    CatchTag = Le#l.i,
-    Int1 = Bef#sr{stk=put_catch(CatchTag, Bef#sr.stk)},
-    CatchReg = fetch_stack({catch_tag,CatchTag}, Int1#sr.stk),
-    {Cis,Int2,St2} = cg_block(C, Le#l.vdb, Int1,
-			      St1#cg{break=B,in_catch=true}),
-    [] = Int2#sr.reg,				%Assertion.
-    Aft = Int2#sr{reg=[{0,R}],stk=drop_catch(CatchTag, Int2#sr.stk)},
-    {[{'catch',CatchReg,{f,B}}] ++ Cis ++
-     [{label,B},{catch_end,CatchReg}],
-     clear_dead(Aft, Le#l.i, Vdb),
-     St2#cg{break=St1#cg.break,in_catch=St1#cg.in_catch}}.
-
-%% put_cg([Var], Constr, Le, Vdb, Bef, St) -> {[Ainstr],Aft,St}.
-%%  We have to be careful how a 'put' works. First the structure is
-%%  built, then it is filled and finally things can be cleared. The
-%%  annotation must reflect this and make sure that the return
-%%  variable is allocated first.
-%%
-%%  put_list and put_map are atomic instructions, both of
-%%  which can safely resuse one of the source registers as target.
-
-put_cg([#k_var{name=R}], #k_cons{hd=Hd,tl=Tl}, Le, Vdb, Bef, St) ->
-    [S1,S2] = cg_reg_args([Hd,Tl], Bef),
-    Int0 = clear_dead(Bef, Le#l.i, Vdb),
-    Int1 = Int0#sr{reg=put_reg(R, Int0#sr.reg)},
-    Ret = fetch_reg(R, Int1#sr.reg),
-    {[{put_list,S1,S2,Ret}], Int1, St};
-put_cg([#k_var{name=R}], #k_binary{segs=Segs}, Le, Vdb, Bef,
-       #cg{bfail=Bfail}=St) ->
-    %% At run-time, binaries are constructed in three stages:
-    %% 1) First the size of the binary is calculated.
-    %% 2) Then the binary is allocated.
-    %% 3) Then each field in the binary is constructed.
-    %% For simplicity, we use the target register to also hold the
-    %% size of the binary. Therefore the target register must *not*
-    %% be one of the source registers.
-
-    %% First allocate the target register.
-    Int0 = Bef#sr{reg=put_reg(R, Bef#sr.reg)},
-    Target = fetch_reg(R, Int0#sr.reg),
-
-    %% Also allocate a scratch register for size calculations.
-    Temp = find_scratch_reg(Int0#sr.reg),
-
-    %% First generate the code that constructs each field.
-    Fail = {f,Bfail},
-    PutCode = cg_bin_put(Segs, Fail, Bef),
-    {Sis,Int1} = maybe_adjust_stack(Int0, Le#l.i, Le#l.i+1, Vdb, St),
-    MaxRegs = max_reg(Bef#sr.reg),
-    Aft = clear_dead(Int1, Le#l.i, Vdb),
-
-    %% Now generate the complete code for constructing the binary.
-    Code = cg_binary(PutCode, Target, Temp, Fail, MaxRegs, Le#l.a),
-    {Sis++Code,Aft,St};
-
-%% Map: single variable key.
-put_cg([#k_var{name=R}], #k_map{op=Op,var=Map,
-                                es=[#k_map_pair{key=#k_var{}=K,val=V}]},
-       Le, Vdb, Bef, St0) ->
-    {Sis,Int0} = maybe_adjust_stack(Bef, Le#l.i, Le#l.i+1, Vdb, St0),
-
-    SrcReg = cg_reg_arg_prefer_y(Map, Int0),
-    Line = line(Le#l.a),
-
-    List = [cg_reg_arg(K,Int0),cg_reg_arg(V,Int0)],
-
-    Live = max_reg(Bef#sr.reg),
-
-    %% The target register can reuse one of the source registers.
-    Aft0 = clear_dead(Int0, Le#l.i, Vdb),
-    Aft = Aft0#sr{reg=put_reg(R, Aft0#sr.reg)},
-    Target = fetch_reg(R, Aft#sr.reg),
-
-    {Is,St1} = put_cg_map(Line, Op, SrcReg, Target, Live, List, St0),
-    {Sis++Is,Aft,St1};
-
-%% Map: (possibly) multiple literal keys.
-put_cg([#k_var{name=R}], #k_map{op=Op,var=Map,es=Es}, Le, Vdb, Bef, St0) ->
-
-    %% assert key literals
-    [] = [Var || #k_map_pair{key=#k_var{}=Var} <- Es],
-
-    {Sis,Int0} = maybe_adjust_stack(Bef, Le#l.i, Le#l.i+1, Vdb, St0),
-    SrcReg = cg_reg_arg_prefer_y(Map, Int0),
-    Line = line(Le#l.a),
-
-    %% fetch registers for values to be put into the map
-    List = flatmap(fun(#k_map_pair{key=K,val=V}) ->
-                           [atomic(K),cg_reg_arg(V, Int0)]
-                   end, Es),
-
-    Live = max_reg(Bef#sr.reg),
-
-    %% The target register can reuse one of the source registers.
-    Aft0 = clear_dead(Int0, Le#l.i, Vdb),
-    Aft = Aft0#sr{reg=put_reg(R, Aft0#sr.reg)},
-    Target = fetch_reg(R, Aft#sr.reg),
-
-    {Is,St1} = put_cg_map(Line, Op, SrcReg, Target, Live, List, St0),
-    {Sis++Is,Aft,St1};
-
-%% Everything else.
-put_cg([#k_var{name=R}], Con, Le, Vdb, Bef, St) ->
-    %% Find a place for the return register first.
-    Int = Bef#sr{reg=put_reg(R, Bef#sr.reg)},
-    Ret = fetch_reg(R, Int#sr.reg),
-    Ais = case Con of
-	      #k_tuple{es=Es} ->
-		  [{put_tuple,length(Es),Ret}] ++ cg_build_args(Es, Bef);
-	      Other ->
-		  [{move,cg_reg_arg(Other, Int),Ret}]
-	  end,
-    {Ais,clear_dead(Int, Le#l.i, Vdb),St}.
-
-
-put_cg_map(Line, Op0, SrcReg, Target, Live, List, St0) ->
-    Bfail = St0#cg.bfail,
-    Fail = {f,St0#cg.bfail},
-    Op = case Op0 of
-	     assoc -> put_map_assoc;
-	     exact -> put_map_exact
-	 end,
-    {OkLbl,St1} = new_label(St0),
-    {BadLbl,St2} = new_label(St1),
-    Is = if
-	     Bfail =:= 0 orelse Op =:= put_map_assoc ->
-		 [Line,{Op,{f,0},SrcReg,Target,Live,{list,List}}];
-	     true ->
-		 %% Ensure that Target is always set, even if
-		 %% the map update operation fails. That is necessary
-		 %% because Target may be included in a test_heap
-		 %% instruction.
-		 [Line,
-		  {Op,{f,BadLbl},SrcReg,Target,Live,{list,List}},
-		  {jump,{f,OkLbl}},
-		  {label,BadLbl},
-		  {move,{atom,ok},Target},
-		  {jump,Fail},
-		  {label,OkLbl}]
-	 end,
-    {Is,St2}.
-
-%%%
-%%% Code generation for constructing binaries.
-%%%
-
-cg_binary([{bs_put_binary,Fail,{atom,all},U,_Flags,Src}|PutCode],
-	  Target, Temp, Fail, MaxRegs, Anno) ->
-    Line = line(Anno),
-    Live = cg_live(Target, MaxRegs),
-    SzCode = cg_bitstr_size(PutCode, Target, Temp, Fail, Live),
-    BinFlags = {field_flags,[]},
-    Code = [Line|SzCode] ++
-	[case member(single_use, Anno) of
-	     true ->
-		 {bs_private_append,Fail,Target,U,Src,BinFlags,Target};
-	     false ->
-		 {bs_append,Fail,Target,0,MaxRegs,U,Src,BinFlags,Target}
-	 end] ++ PutCode,
-    cg_bin_opt(Code);
-cg_binary(PutCode, Target, Temp, Fail, MaxRegs, Anno) ->
-    Line = line(Anno),
-    Live = cg_live(Target, MaxRegs),
-    {InitOp,SzCode} = cg_binary_size(PutCode, Target, Temp, Fail, Live),
-
-    Code = [Line|SzCode] ++ [{InitOp,Fail,Target,0,MaxRegs,
-			      {field_flags,[]},Target}|PutCode],
-    cg_bin_opt(Code).
-
-cg_live({x,X}, MaxRegs) when X =:= MaxRegs -> MaxRegs+1;
-cg_live({x,X}, MaxRegs) when X < MaxRegs -> MaxRegs.
-
-%% Generate code that calculate the size of the bitstr to be
-%% built in BITS.
-
-cg_bitstr_size(PutCode, Target, Temp, Fail, Live) ->
-    {Bits,Es} = cg_bitstr_size_1(PutCode, 0, []),
-    reverse(cg_gen_binsize(Es, Target, Temp, Fail, Live,
-			   [{move,{integer,Bits},Target}])).
-
-cg_bitstr_size_1([{bs_put_utf8,_,_,Src}|Next], Bits, Acc) ->
-    cg_bitstr_size_1(Next, Bits, [{'*',{bs_utf8_size,Src},8}|Acc]);
-cg_bitstr_size_1([{bs_put_utf16,_,_,Src}|Next], Bits, Acc) ->
-    cg_bitstr_size_1(Next, Bits, [{'*',{bs_utf16_size,Src},8}|Acc]);
-cg_bitstr_size_1([{bs_put_utf32,_,_,_}|Next], Bits, Acc) ->
-    cg_bitstr_size_1(Next, Bits+32, Acc);
-cg_bitstr_size_1([{_,_,S,U,_,Src}|Next], Bits, Acc) ->
-    case S of
-	{integer,N} -> cg_bitstr_size_1(Next, Bits+N*U, Acc);
-	{atom,all} -> cg_bitstr_size_1(Next, Bits, [{bit_size,Src}|Acc]);
-	_ when U =:= 1 -> cg_bitstr_size_1(Next, Bits, [S|Acc]);
-	_ -> cg_bitstr_size_1(Next, Bits, [{'*',S,U}|Acc])
-    end;
-cg_bitstr_size_1([], Bits, Acc) -> {Bits,Acc}.
-
-%% Generate code that calculate the size of the bitstr to be
-%% built in BYTES or BITS (depending on what is easiest).
-
-cg_binary_size(PutCode, Target, Temp, Fail, Live) ->
-    {InitInstruction,Szs} = cg_binary_size_1(PutCode, 0, []),
-    SizeExpr = reverse(cg_gen_binsize(Szs, Target, Temp, Fail, Live, [{move,{integer,0},Target}])),
-    {InitInstruction,SizeExpr}.
-
-cg_binary_size_1([{bs_put_utf8,_Fail,_Flags,Src}|T], Bits, Acc) ->
-    cg_binary_size_1(T, Bits, [{8,{bs_utf8_size,Src}}|Acc]);
-cg_binary_size_1([{bs_put_utf16,_Fail,_Flags,Src}|T], Bits, Acc) ->
-    cg_binary_size_1(T, Bits, [{8,{bs_utf16_size,Src}}|Acc]);
-cg_binary_size_1([{bs_put_utf32,_Fail,_Flags,_Src}|T], Bits, Acc) ->
-    cg_binary_size_1(T, Bits+32, Acc);
-cg_binary_size_1([{_Put,_Fail,S,U,_Flags,Src}|T], Bits, Acc) ->
-    cg_binary_size_2(S, U, Src, T, Bits, Acc);
-cg_binary_size_1([], Bits, Acc) ->
-    Bytes = Bits div 8,
-    RemBits = Bits rem 8,
-    Sizes0 = sort([{1,{integer,RemBits}},{8,{integer,Bytes}}|Acc]),
-    Sizes = filter(fun({_,{integer,0}}) -> false;
-		      (_) -> true end, Sizes0),
-    case Sizes of
-	[{1,_}|_] ->
-	    {bs_init_bits,cg_binary_bytes_to_bits(Sizes, [])};
-	[{8,_}|_] ->
-	    {bs_init2,[E || {8,E} <- Sizes]};
-	[] ->
-	    {bs_init_bits,[]}
-    end.
-
-cg_binary_size_2({integer,N}, U, _, Next, Bits, Acc) ->
-    cg_binary_size_1(Next, Bits+N*U, Acc);
-cg_binary_size_2({atom,all}, U, E, Next, Bits, Acc) ->
-    if 
-	U rem 8 =:= 0 ->
-	    cg_binary_size_1(Next, Bits, [{8,{byte_size,E}}|Acc]);
-	true ->
-	    cg_binary_size_1(Next, Bits, [{1,{bit_size,E}}|Acc])
-    end;
-cg_binary_size_2(Reg, 1, _, Next, Bits, Acc) ->
-    cg_binary_size_1(Next, Bits, [{1,Reg}|Acc]);
-cg_binary_size_2(Reg, 8, _, Next, Bits, Acc) ->
-    cg_binary_size_1(Next, Bits, [{8,Reg}|Acc]);
-cg_binary_size_2(Reg, U, _, Next, Bits, Acc) ->
-    cg_binary_size_1(Next, Bits, [{1,{'*',Reg,U}}|Acc]).
-
-cg_binary_bytes_to_bits([{8,{integer,N}}|T], Acc) ->
-    cg_binary_bytes_to_bits(T, [{integer,8*N}|Acc]);
-cg_binary_bytes_to_bits([{8,{byte_size,Reg}}|T], Acc) ->
-    cg_binary_bytes_to_bits(T, [{bit_size,Reg}|Acc]);
-cg_binary_bytes_to_bits([{8,Reg}|T], Acc) ->
-    cg_binary_bytes_to_bits(T, [{'*',Reg,8}|Acc]);
-cg_binary_bytes_to_bits([{1,Sz}|T], Acc) ->
-    cg_binary_bytes_to_bits(T, [Sz|Acc]);
-cg_binary_bytes_to_bits([], Acc) ->
-    cg_binary_bytes_to_bits_1(sort(Acc)).
-
-cg_binary_bytes_to_bits_1([{integer,I},{integer,J}|T]) ->
-    cg_binary_bytes_to_bits_1([{integer,I+J}|T]);
-cg_binary_bytes_to_bits_1([H|T]) ->
-    [H|cg_binary_bytes_to_bits_1(T)];
-cg_binary_bytes_to_bits_1([]) -> [].
-
-cg_gen_binsize([{'*',{bs_utf8_size,Src},B}|T], Target, Temp, Fail, Live, Acc) ->
-    Size = {bs_utf8_size,Fail,Src,Temp},
-    Add = {bs_add,Fail,[Target,Temp,B],Target},
-    cg_gen_binsize(T, Target, Temp, Fail, Live,
-		   [Add,Size|Acc]);
-cg_gen_binsize([{'*',{bs_utf16_size,Src},B}|T], Target, Temp, Fail, Live, Acc) ->
-    Size = {bs_utf16_size,Fail,Src,Temp},
-    Add = {bs_add,Fail,[Target,Temp,B],Target},
-    cg_gen_binsize(T, Target, Temp, Fail, Live,
-		   [Add,Size|Acc]);
-cg_gen_binsize([{'*',A,B}|T], Target, Temp, Fail, Live, Acc) ->
-    cg_gen_binsize(T, Target, Temp, Fail, Live,
-		   [{bs_add,Fail,[Target,A,B],Target}|Acc]);
-cg_gen_binsize([{bit_size,B}|T], Target, Temp, Fail, Live, Acc) ->
-    cg_gen_binsize([Temp|T], Target, Temp, Fail, Live,
-		   [{gc_bif,bit_size,Fail,Live,[B],Temp}|Acc]);
-cg_gen_binsize([{byte_size,B}|T], Target, Temp, Fail, Live, Acc) ->
-    cg_gen_binsize([Temp|T], Target, Temp, Fail, Live,
-		   [{gc_bif,byte_size,Fail,Live,[B],Temp}|Acc]);
-cg_gen_binsize([{bs_utf8_size,B}|T], Target, Temp, Fail, Live, Acc) ->
-    cg_gen_binsize([Temp|T], Target, Temp, Fail, Live,
-		   [{bs_utf8_size,Fail,B,Temp}|Acc]);
-cg_gen_binsize([{bs_utf16_size,B}|T], Target, Temp, Fail, Live, Acc) ->
-    cg_gen_binsize([Temp|T], Target, Temp, Fail, Live,
-		   [{bs_utf16_size,Fail,B,Temp}|Acc]);
-cg_gen_binsize([E0|T], Target, Temp, Fail, Live, Acc) ->
-    cg_gen_binsize(T, Target, Temp, Fail, Live,
-		   [{bs_add,Fail,[Target,E0,1],Target}|Acc]);
-cg_gen_binsize([], _, _, _, _, Acc) -> Acc.
-
-
-%% cg_bin_opt(Code0) -> Code
-%%  Optimize the size calculations for binary construction.
-
-cg_bin_opt([{move,S1,{x,X}=D},{gc_bif,Op,Fail,Live0,As,Dst}|Is]) ->
-    Live = if
-               X + 1 =:= Live0 -> X;
-               true -> Live0
-           end,
-    [{gc_bif,Op,Fail,Live,As,D}|cg_bin_opt([{move,S1,Dst}|Is])];
-cg_bin_opt([{move,_,_}=I1,{Op,_,_,_}=I2|Is])
-  when Op =:= bs_utf8_size orelse Op =:= bs_utf16_size ->
-    [I2|cg_bin_opt([I1|Is])];
-cg_bin_opt([{bs_add,_,[{integer,0},Src,1],Dst}|Is]) ->
-    cg_bin_opt_1([{move,Src,Dst}|Is]);
-cg_bin_opt([{bs_add,_,[Src,{integer,0},_],Dst}|Is]) ->
-    cg_bin_opt_1([{move,Src,Dst}|Is]);
-cg_bin_opt(Is) ->
-    cg_bin_opt_1(Is).
-
-cg_bin_opt_1([{move,Size,D},{bs_append,Fail,D,Extra,Regs,U,Bin,Flags,D}|Is]) ->
-    [{bs_append,Fail,Size,Extra,Regs,U,Bin,Flags,D}|cg_bin_opt(Is)];
-cg_bin_opt_1([{move,Size,D},{bs_private_append,Fail,D,U,Bin,Flags,D}|Is]) ->
-    [{bs_private_append,Fail,Size,U,Bin,Flags,D}|cg_bin_opt(Is)];
-cg_bin_opt_1([{move,Size,D},{Op,Fail,D,Extra,Regs,Flags,D}|Is])
-  when Op =:= bs_init2; Op =:= bs_init_bits ->
-    Bytes = case Size of
-                {integer,Int} -> Int;
-                _ -> Size
-            end,
-    [{Op,Fail,Bytes,Extra,Regs,Flags,D}|cg_bin_opt(Is)];
-cg_bin_opt_1([{move,S1,D},{bs_add,Fail,[D,S2,U],Dst}|Is]) ->
-    cg_bin_opt([{bs_add,Fail,[S1,S2,U],Dst}|Is]);
-cg_bin_opt_1([{move,S1,D},{bs_add,Fail,[S2,D,U],Dst}|Is]) ->
-    cg_bin_opt([{bs_add,Fail,[S2,S1,U],Dst}|Is]);
-cg_bin_opt_1([I|Is]) ->
-    [I|cg_bin_opt(Is)];
-cg_bin_opt_1([]) ->
-    [].
-
-cg_bin_put(#k_bin_seg{size=S0,unit=U,type=T,flags=Fs,seg=E0,next=Next},
-           Fail, Bef) ->
-    S1 = cg_reg_arg(S0, Bef),
-    E1 = cg_reg_arg(E0, Bef),
-    {Format,Op} = case T of
-		      integer -> {plain,bs_put_integer};
-		      utf8 ->    {utf,bs_put_utf8};
-		      utf16 ->   {utf,bs_put_utf16};
-		      utf32 ->   {utf,bs_put_utf32};
-		      binary  -> {plain,bs_put_binary};
-		      float   -> {plain,bs_put_float}
-		  end,
-    case Format of
-	plain ->
-	    [{Op,Fail,S1,U,{field_flags,Fs},E1}|cg_bin_put(Next, Fail, Bef)];
-	utf ->
-	    [{Op,Fail,{field_flags,Fs},E1}|cg_bin_put(Next, Fail, Bef)]
-    end;
-cg_bin_put(#k_bin_end{}, _, _) -> [].
-
-cg_build_args(As, Bef) ->
-    [{put,cg_reg_arg(A, Bef)} || A <- As].
-
-%% return_cg([Val], Le, Vdb, Bef, St) -> {[Ainstr],Aft,St}.
-%% break_cg([Val], Le, Vdb, Bef, St) -> {[Ainstr],Aft,St}.
-%%  These are very simple, just put return/break values in registers
-%%  from 0, then return/break.  Use the call setup to clean up stack,
-%%  but must clear registers to ensure sr_merge works correctly.
-
-return_cg(Rs, Le, Vdb, Bef, St) ->
-    {Ms,Int} = cg_setup_call(Rs, Bef, Le#l.i, Vdb),
-    {Ms ++ [return],Int#sr{reg=clear_regs(Int#sr.reg)},St}.
-
-break_cg(Bs, Le, Vdb, Bef, St) ->
-    {Ms,Int} = cg_setup_call(Bs, Bef, Le#l.i, Vdb),
-    {Ms ++ [{jump,{f,St#cg.break}}],
-     Int#sr{reg=clear_regs(Int#sr.reg)},St}.
-
-guard_break_cg(Bs, #l{i=I}, Vdb, #sr{reg=Reg0}=Bef, St) ->
-    #sr{reg=Reg1} = Int = clear_dead(Bef, I, Vdb),
-    Reg2 = trim_free(Reg1),
-    NumLocked = length(Reg2),
-    Moves0 = gen_moves(Bs, Bef, NumLocked, []),
-    Moves = order_moves(Moves0, find_scratch_reg(Reg0)),
-    {BreakVars,_} = mapfoldl(fun(_, RegNum) ->
-				     {{RegNum,gbreakvar},RegNum+1}
-			     end, length(Reg2), Bs),
-    Reg = Reg2 ++ BreakVars,
-    Aft = Int#sr{reg=Reg},
-    {Moves ++ [{jump,{f,St#cg.break}}],Aft,St}.
-
-%% cg_reg_arg(Arg0, Info) -> Arg
-%% cg_reg_args([Arg0], Info) -> [Arg]
-%%  Convert argument[s] into registers. Literal values are returned unchanged.
-
-cg_reg_args(As, Bef) -> [cg_reg_arg(A, Bef) || A <- As].
-
-cg_reg_arg(#k_var{name=V}, Bef) -> fetch_var(V, Bef);
-cg_reg_arg(Literal, _) -> atomic(Literal).
-
-cg_reg_arg_prefer_y(#k_var{name=V}, Bef) -> fetch_var_prefer_y(V, Bef);
-cg_reg_arg_prefer_y(Literal, _) -> atomic(Literal).
-
-%% cg_setup_call([Arg], Bef, Cur, Vdb) -> {[Instr],Aft}.
-%%  Do the complete setup for a call/enter.
-
-cg_setup_call(As, Bef, I, Vdb) ->
-    {Ms,Int0} = cg_call_args(As, Bef, I, Vdb),
-    %% Have set up arguments, can now clean up, compress and save to stack.
-    Int1 = Int0#sr{stk=clear_dead_stk(Int0#sr.stk, I, Vdb),res=[]},
-    {Sis,Int2} = adjust_stack(Int1, I, I+1, Vdb),
-    {Ms ++ Sis,Int2}.
-
-%% cg_call_args([Arg], SrState) -> {[Instr],SrState}.
-%%  Setup the arguments to a call/enter/bif. Put the arguments into
-%%  consecutive registers starting at {x,0} moving any data which
-%%  needs to be saved. Return a modified SrState structure with the
-%%  new register contents.  N.B. the resultant register info will
-%%  contain non-variable values when there are non-variable values.
-%%
-%%  This routine is complicated by unsaved values in x registers.
-%%  We'll move away any unsaved values that are in the registers
-%%  to be overwritten by the arguments.
-
-cg_call_args(As, Bef, I, Vdb) ->
-    Regs0 = load_arg_regs(Bef#sr.reg, As),
-    Unsaved = unsaved_registers(Regs0, Bef#sr.stk, I, I+1, Vdb),
-    {UnsavedMoves,Regs} = move_unsaved(Unsaved, Bef#sr.reg, Regs0),
-    Moves0 = gen_moves(As, Bef),
-    Moves = order_moves(Moves0, find_scratch_reg(Regs)),
-    {UnsavedMoves ++ Moves,Bef#sr{reg=Regs}}.
-
-%% load_arg_regs([Reg], Arguments) -> [Reg]
-%%  Update the register descriptor to include the arguments (from {x,0}
-%%  and upwards). Values in argument register are overwritten.
-%%  Values in x registers above the arguments are preserved.
-
-load_arg_regs(Regs, As) -> load_arg_regs(Regs, As, 0).
-
-load_arg_regs([_|Rs], [#k_var{name=V}|As], I) -> [{I,V}|load_arg_regs(Rs, As, I+1)];
-load_arg_regs([_|Rs], [A|As], I) -> [{I,A}|load_arg_regs(Rs, As, I+1)];
-load_arg_regs([], [#k_var{name=V}|As], I) -> [{I,V}|load_arg_regs([], As, I+1)];
-load_arg_regs([], [A|As], I) -> [{I,A}|load_arg_regs([], As, I+1)];
-load_arg_regs(Rs, [], _) -> Rs.
-
-%% Returns the variables must be saved and are currently in the
-%% x registers that are about to be overwritten by the arguments.
-
-unsaved_registers(Regs, Stk, Fb, Lf, Vdb) ->
-    [V || {V,F,L} <- Vdb,
-	  F < Fb,
-	  L >= Lf,
-	  not on_stack(V, Stk),
-	  not in_reg(V, Regs)].
-
-in_reg(V, Regs) -> keymember(V, 2, Regs).
-
-%% Move away unsaved variables from the registers that are to be
-%% overwritten by the arguments.
-move_unsaved(Vs, OrigRegs, NewRegs) ->
-    move_unsaved(Vs, OrigRegs, NewRegs, []).
-    
-move_unsaved([V|Vs], OrigRegs, NewRegs0, Acc) ->
-    NewRegs = put_reg(V, NewRegs0),
-    Src = fetch_reg(V, OrigRegs),
-    Dst = fetch_reg(V, NewRegs),
-    move_unsaved(Vs, OrigRegs, NewRegs, [{move,Src,Dst}|Acc]);
-move_unsaved([], _, Regs, Acc) -> {Acc,Regs}.
-    
-%% gen_moves(As, Sr)
-%%  Generate the basic move instruction to move the arguments
-%%  to their proper registers. The list will be sorted on
-%%  destinations. (I.e. the move to {x,0} will be first --
-%%  see the comment to order_moves/2.)
-
-gen_moves(As, Sr) -> gen_moves(As, Sr, 0, []).
-
-gen_moves([#k_var{name=V}|As], Sr, I, Acc) ->
-    case fetch_var(V, Sr) of
-	{x,I} -> gen_moves(As, Sr, I+1, Acc);
-	Reg -> gen_moves(As, Sr, I+1, [{move,Reg,{x,I}}|Acc])
-    end;
-gen_moves([A0|As], Sr, I, Acc) ->
-    A = atomic(A0),
-    gen_moves(As, Sr, I+1, [{move,A,{x,I}}|Acc]);
-gen_moves([], _, _, Acc) -> lists:keysort(3, Acc).
-
-%% order_moves([Move], ScratchReg) -> [Move]
-%%  Orders move instruction so that source registers are not
-%%  destroyed before they are used. If there are cycles
-%%  (such as {move,{x,0},{x,1}}, {move,{x,1},{x,1}}),
-%%  the scratch register is used to break up the cycle.
-%%    If possible, the first move of the input list is placed
-%%  last in the result list (to make the move to {x,0} occur
-%%  just before the call to allow the Beam loader to coalesce
-%%  the instructions).
-
-order_moves(Ms, Scr) -> order_moves(Ms, Scr, []).
-
-order_moves([{move,_,_}=M|Ms0], ScrReg, Acc0) ->
-    {Chain,Ms} = collect_chain(Ms0, [M], ScrReg),
-    Acc = reverse(Chain, Acc0),
-    order_moves(Ms, ScrReg, Acc);
-order_moves([], _, Acc) -> Acc.
-
-collect_chain(Ms, Path, ScrReg) ->
-    collect_chain(Ms, Path, [], ScrReg).
-
-collect_chain([{move,Src,Same}=M|Ms0], [{move,Same,_}|_]=Path, Others, ScrReg) ->
-    case lists:keyfind(Src, 3, Path) of
-	false ->
-	    collect_chain(reverse(Others, Ms0), [M|Path], [], ScrReg);
-	_ ->	% We have a cycle.
-	    {break_up_cycle(M, Path, ScrReg),reverse(Others, Ms0)}
-    end;
-collect_chain([M|Ms], Path, Others, ScrReg) ->
-    collect_chain(Ms, Path, [M|Others], ScrReg);
-collect_chain([], Path, Others, _) ->
-    {Path,Others}.
-
-break_up_cycle({move,Src,_}=M, Path, ScrReg) ->
-    [{move,ScrReg,Src},M|break_up_cycle1(Src, Path, ScrReg)].
-
-break_up_cycle1(Dst, [{move,Src,Dst}|Path], ScrReg) ->
-    [{move,Src,ScrReg}|Path];
-break_up_cycle1(Dst, [M|Path], LastMove) ->
-    [M|break_up_cycle1(Dst, Path, LastMove)].
-
-%% clear_dead(Sr, Until, Vdb) -> Aft.
-%%  Remove all variables in Sr which have died AT ALL so far.
-
-clear_dead(#sr{stk=Stk}=Sr0, Until, Vdb) ->
-    Sr = Sr0#sr{reg=clear_dead_reg(Sr0, Until, Vdb),
-                stk=clear_dead_stk(Stk, Until, Vdb)},
-    reserve(Sr).
-
-clear_dead_reg(Sr, Until, Vdb) ->
-    [case R of
-         {_I,V} = IV ->
-             case vdb_find(V, Vdb) of
-                 {V,_,L} when L > Until -> IV;
-                 _ -> free                      %Remove anything else
-             end;
-         {reserved,_I,_V}=Reserved -> Reserved;
-         free -> free
-     end || R <- Sr#sr.reg].
-
-clear_dead_stk(Stk, Until, Vdb) ->
-    [case S of
-	    {V} = T ->
-            case vdb_find(V, Vdb) of
-                {V,_,L} when L > Until -> T;
-                _ -> dead   %Remove anything else
-            end;
-        free -> free;
-        dead -> dead
-     end || S <- Stk].
-
-
-%% sr_merge(Sr1, Sr2) -> Sr.
-%%  Merge two stack/register states keeping the longest of both stack
-%%  and register. Perform consistency check on both, elements must be
-%%  the same.  Allow frame size 'void' to make easy creation of
-%%  "empty" frame.
-
-sr_merge(#sr{reg=R1,stk=S1,res=[]}, #sr{reg=R2,stk=S2,res=[]}) ->
-    #sr{reg=longest(R1, R2),stk=longest(S1, S2),res=[]};
-sr_merge(void, S2) -> S2#sr{res=[]}.
-
-longest([H|T1], [H|T2]) -> [H|longest(T1, T2)];
-longest([dead|T1], [free|T2]) -> [dead|longest(T1, T2)];
-longest([free|T1], [dead|T2]) -> [dead|longest(T1, T2)];
-longest([dead|_] = L, []) -> L;
-longest([], [dead|_] = L) -> L;
-longest([free|_] = L, []) -> L;
-longest([], [free|_] = L) -> L;
-longest([], []) -> [].
-
-trim_free([R|Rs0]) ->
-    case {trim_free(Rs0),R} of
-	{[],free} -> [];
-	{Rs,R} -> [R|Rs]
-    end;
-trim_free([]) -> [].
-
-%% maybe_adjust_stack(Bef, FirstBefore, LastFrom, Vdb, St) -> {[Ainstr],Aft}.
-%%  Adjust the stack, but only if the code is inside a catch and not
-%%  inside a guard.  Use this funtion before instructions that may
-%%  cause an exception.
-
-maybe_adjust_stack(Bef, Fb, Lf, Vdb, St) ->
-    case St of
-	#cg{in_catch=true,bfail=0} ->
-	    adjust_stack(Bef, Fb, Lf, Vdb);
-	#cg{} ->
-	    {[],Bef}
-    end.
-
-%% adjust_stack(Bef, FirstBefore, LastFrom, Vdb) -> {[Ainstr],Aft}.
-%%  Do complete stack adjustment by compressing stack and adding
-%%  variables to be saved.  Try to optimise ordering on stack by
-%%  having reverse order to their lifetimes.
-%%
-%%  In Beam, there is a fixed stack frame and no need to do stack compression.
-
-adjust_stack(Bef, Fb, Lf, Vdb) ->
-    Stk0 = Bef#sr.stk,
-    {Stk1,Saves} = save_stack(Stk0, Fb, Lf, Vdb),
-    {saves(Saves, Bef#sr.reg, Stk1),
-     Bef#sr{stk=Stk1}}.
-
-%% save_stack(Stack, FirstBefore, LastFrom, Vdb) -> {[SaveVar],NewStack}.
-%%  Save variables which are used past current point and which are not
-%%  already on the stack.
-
-save_stack(Stk0, Fb, Lf, Vdb) ->
-    %% New variables that are in use but not on stack.
-    New = new_not_on_stack(Stk0, Fb, Lf, Vdb),
-
-    %% Add new variables that are not just dropped immediately.
-    %% N.B. foldr works backwards from the end!!
-    Saves = [V || {V,_,_} <- keysort(3, New)],
-    Stk1 = foldr(fun (V, Stk) -> put_stack(V, Stk) end, Stk0, Saves),
-    {Stk1,Saves}.
-
-%% new_not_on_stack(Stack, FirstBefore, LastFrom, Vdb) ->
-%%                 [{Variable,First,Last}]
-%%  Return information about all variables that are used past current
-%%  point and that are not already on the stack.
-
-new_not_on_stack(Stk, Fb, Lf, Vdb) ->
-    [VFL || {V,F,L} = VFL <- Vdb,
-            F < Fb,
-            L >= Lf,
-            not on_stack(V, Stk)].
-
-%% saves([SaveVar], Reg, Stk) -> [{move,Reg,Stk}].
-%%  Generate move instructions to save variables onto stack.  The
-%%  stack/reg info used is that after the new stack has been made.
-
-saves(Ss, Reg, Stk) ->
-    [{move,fetch_reg(V, Reg),fetch_stack(V, Stk)} || V <- Ss].
-
-%% fetch_var(VarName, StkReg) -> r{R} | sp{Sp}.
-%% find_var(VarName, StkReg) -> ok{r{R} | sp{Sp}} | error.
-%%  Fetch/find a variable in either the registers or on the
-%%  stack. Fetch KNOWS it's there.
-
-fetch_var(V, Sr) ->
-    case find_reg(V, Sr#sr.reg) of
-	{ok,R} -> R;
-	error -> fetch_stack(V, Sr#sr.stk)
-    end.
-
-fetch_var_prefer_y(V, #sr{reg=Reg,stk=Stk}) ->
-    case find_stack(V, Stk) of
-	{ok,R} -> R;
-	error -> fetch_reg(V, Reg)
-    end.
-
-load_vars(Vs, Regs) ->
-    foldl(fun (#k_var{name=V}, Rs) -> put_reg(V, Rs) end, Regs, Vs).
-
-%% put_reg(Val, Regs) -> Regs.
-%% find_reg(Val, Regs) -> {ok,r{R}} | error.
-%% fetch_reg(Val, Regs) -> r{R}.
-%%  Functions to interface the registers.
-
-% put_regs(Vs, Rs) -> foldl(fun put_reg/2, Rs, Vs).
-
-put_reg(V, Rs) -> put_reg_1(V, Rs, 0).
-
-put_reg_1(V, [free|Rs], I) -> [{I,V}|Rs];
-put_reg_1(V, [{reserved,I,V}|Rs], I) -> [{I,V}|Rs];
-put_reg_1(V, [R|Rs], I) -> [R|put_reg_1(V, Rs, I+1)];
-put_reg_1(V, [], I) -> [{I,V}].
-
-fetch_reg(V, [{I,V}|_]) -> {x,I};
-fetch_reg(V, [_|SRs]) -> fetch_reg(V, SRs).
-
-find_reg(V, [{I,V}|_]) -> {ok,{x,I}};
-find_reg(V, [_|SRs]) -> find_reg(V, SRs);
-find_reg(_, []) -> error.
-
-%% For the bit syntax, we need a scratch register if we are constructing
-%% a binary that will not be used.
-
-find_scratch_reg(Rs) -> find_scratch_reg(Rs, 0).
-    
-find_scratch_reg([free|_], I) -> {x,I};
-find_scratch_reg([_|Rs], I) -> find_scratch_reg(Rs, I+1);
-find_scratch_reg([], I) -> {x,I}.
-
-replace_reg_contents(Old, New, [{I,Old}|Rs]) -> [{I,New}|Rs];
-replace_reg_contents(Old, New, [R|Rs]) -> [R|replace_reg_contents(Old, New, Rs)].
-
-%%clear_regs(Regs) -> map(fun (R) -> free end, Regs).
-clear_regs(_) -> [].
-
-max_reg(Regs) ->
-    foldl(fun ({I,_}, _) -> I;
-	      (_, Max) -> Max end,
-	  -1, Regs) + 1.
-
-%% put_stack(Val, [{Val}]) -> [{Val}].
-%% fetch_stack(Var, Stk) -> sp{S}.
-%% find_stack(Var, Stk) -> ok{sp{S}} | error.
-%%  Functions to interface the stack.
-
-put_stack(Val, []) -> [{Val}];
-put_stack(Val, [dead|Stk]) -> [{Val}|Stk];
-put_stack(Val, [free|Stk]) -> [{Val}|Stk];
-put_stack(Val, [NotFree|Stk]) -> [NotFree|put_stack(Val, Stk)].
-
-put_stack_carefully(Val, Stk0) ->
-    try
-	put_stack_carefully1(Val, Stk0)
-    catch
-	throw:error ->
-	    error
-    end.
-
-put_stack_carefully1(_, []) -> throw(error);
-put_stack_carefully1(Val, [dead|Stk]) -> [{Val}|Stk];
-put_stack_carefully1(Val, [free|Stk]) -> [{Val}|Stk];
-put_stack_carefully1(Val, [NotFree|Stk]) ->
-    [NotFree|put_stack_carefully1(Val, Stk)].
-
-fetch_stack(Var, Stk) -> fetch_stack(Var, Stk, 0).
-
-fetch_stack(V, [{V}|_], I) -> {yy,I};
-fetch_stack(V, [_|Stk], I) -> fetch_stack(V, Stk, I+1).
-
-find_stack(Var, Stk) -> find_stack(Var, Stk, 0).
-
-find_stack(V, [{V}|_], I) -> {ok,{yy,I}};
-find_stack(V, [_|Stk], I) -> find_stack(V, Stk, I+1);
-find_stack(_, [], _) -> error.
-
-on_stack(V, Stk) -> keymember(V, 1, Stk).
-
-%% put_catch(CatchTag, Stack) -> Stack'
-%% drop_catch(CatchTag, Stack) -> Stack'
-%%  Special interface for putting and removing catch tags, to ensure that
-%%  catches nest properly. Also used for try tags.
-
-put_catch(Tag, Stk0) -> put_catch(Tag, reverse(Stk0), []).
-
-put_catch(Tag, [], Stk) ->
-    put_stack({catch_tag,Tag}, Stk);
-put_catch(Tag, [{{catch_tag,_}}|_]=RevStk, Stk) ->
-    reverse(RevStk, put_stack({catch_tag,Tag}, Stk));
-put_catch(Tag, [Other|Stk], Acc) ->
-    put_catch(Tag, Stk, [Other|Acc]).
-
-drop_catch(Tag, [{{catch_tag,Tag}}|Stk]) -> [free|Stk];
-drop_catch(Tag, [Other|Stk]) -> [Other|drop_catch(Tag, Stk)].
-
-%% atomic(Klit) -> Lit.
-%% atomic_list([Klit]) -> [Lit].
-
-atomic(#k_literal{val=V}) -> {literal,V};
-atomic(#k_int{val=I}) -> {integer,I};
-atomic(#k_float{val=F}) -> {float,F};
-atomic(#k_atom{val=A}) -> {atom,A};
-%%atomic(#k_char{val=C}) -> {char,C};
-atomic(#k_nil{}) -> nil.
-
-%% new_label(St) -> {L,St}.
-
-new_label(#cg{lcount=Next}=St) ->
-    {Next,St#cg{lcount=Next+1}}.
-
-%% line(Le) -> {line,[] | {location,File,Line}}
-%%  Create a line instruction, containing information about
-%%  the current filename and line number. A line information
-%%  instruction should be placed before any operation that could
-%%  cause an exception.
-
-line(#l{a=Anno}) ->
-    line(Anno);
-line([Line,{file,Name}]) when is_integer(Line) ->
-    line_1(Name, Line);
-line([_|_]=A) ->
-    {Name,Line} = find_loc(A, no_file, 0),
-    line_1(Name, Line);
-line([]) ->
-    {line,[]}.
-
-line_1(no_file, _) ->
-    {line,[]};
-line_1(_, 0) ->
-    %% Missing line number or line number 0.
-    {line,[]};
-line_1(Name, Line) ->
-    {line,[{location,Name,Line}]}.
-
-find_loc([Line|T], File, _) when is_integer(Line) ->
-    find_loc(T, File, Line);
-find_loc([{file,File}|T], _, Line) ->
-    find_loc(T, File, Line);
-find_loc([_|T], File, Line) ->
-    find_loc(T, File, Line);
-find_loc([], File, Line) -> {File,Line}.
-
-flatmapfoldl(F, Accu0, [Hd|Tail]) ->
-    {R,Accu1} = F(Hd, Accu0),
-    {Rs,Accu2} = flatmapfoldl(F, Accu1, Tail),
-    {R++Rs,Accu2};
-flatmapfoldl(_, Accu, []) -> {[],Accu}.
-
-%% Keep track of life time for variables.
-%%
-%% init_vars([{var,VarName}]) -> Vdb.
-%% new_vars([VarName], I, Vdb) -> Vdb.
-%% use_vars([VarName], I, Vdb) -> Vdb.
-%% add_var(VarName, F, L, Vdb) -> Vdb.
-%%
-%% The list of variable names for new_vars/3 and use_vars/3
-%% must be sorted.
-
-init_vars(Vs) ->
-    vdb_new(Vs).
-
-new_vars([], _, Vdb) -> Vdb;
-new_vars([V], I, Vdb) -> vdb_store_new(V, {V,I,I}, Vdb);
-new_vars(Vs, I, Vdb) -> vdb_update_vars(Vs, Vdb, I).
-
-use_vars([], _, Vdb) ->
-    Vdb;
-use_vars([V], I, Vdb) ->
-    case vdb_find(V, Vdb) of
-        {V,F,L} when I > L -> vdb_update(V, {V,F,I}, Vdb);
-        {V,_,_} -> Vdb;
-        error -> vdb_store_new(V, {V,I,I}, Vdb)
-    end;
-use_vars(Vs, I, Vdb) -> vdb_update_vars(Vs, Vdb, I).
-
-add_var(V, F, L, Vdb) ->
-    vdb_store_new(V, {V,F,L}, Vdb).
-
-%% vdb
-
-vdb_new(Vs) ->
-    ordsets:from_list([{V,0,0} || #k_var{name=V} <- Vs]).
-
--type var() :: atom().
-
--spec vdb_find(var(), [vdb_entry()]) -> 'error' | vdb_entry().
-
-vdb_find(V, Vdb) ->
-    case lists:keyfind(V, 1, Vdb) of
-        false -> error;
-        Vd -> Vd
-    end.
-
-vdb_update(V, Update, [{V,_,_}|Vdb]) ->
-    [Update|Vdb];
-vdb_update(V, Update, [Vd|Vdb]) ->
-    [Vd|vdb_update(V, Update, Vdb)].
-
-vdb_store_new(V, New, [{V1,_,_}=Vd|Vdb]) when V > V1 ->
-    [Vd|vdb_store_new(V, New, Vdb)];
-vdb_store_new(V, New, [{V1,_,_}|_]=Vdb) when V < V1 ->
-    [New|Vdb];
-vdb_store_new(_, New, []) -> [New].
-
-vdb_update_vars([V|_]=Vs, [{V1,_,_}=Vd|Vdb], I) when V > V1 ->
-    [Vd|vdb_update_vars(Vs, Vdb, I)];
-vdb_update_vars([V|Vs], [{V1,_,_}|_]=Vdb, I) when V < V1 ->
-    %% New variable.
-    [{V,I,I}|vdb_update_vars(Vs, Vdb, I)];
-vdb_update_vars([V|Vs], [{_,F,L}=Vd|Vdb], I) ->
-    %% Existing variable.
-    if
-        I > L -> [{V,F,I}|vdb_update_vars(Vs, Vdb, I)];
-        true ->  [Vd|vdb_update_vars(Vs, Vdb, I)]
-    end;
-vdb_update_vars([V|Vs], [], I) ->
-    %% New variable.
-    [{V,I,I}|vdb_update_vars(Vs, [], I)];
-vdb_update_vars([], Vdb, _) -> Vdb.
-
-%% vdb_sub(Min, Max, Vdb) -> Vdb.
-%%  Extract variables which are used before and after Min.  Lock
-%%  variables alive after Max.
-
-vdb_sub(Min, Max, Vdb) ->
-    [ if L >= Max -> {V,F,locked};
-         true -> Vd
-      end || {V,F,L}=Vd <- Vdb,
-             F < Min,
-             L >= Min ].
diff --git a/lib/compiler/src/v3_core.erl b/lib/compiler/src/v3_core.erl
index c9517c3e51..3699c9d22e 100644
--- a/lib/compiler/src/v3_core.erl
+++ b/lib/compiler/src/v3_core.erl
@@ -228,7 +228,8 @@ function({function,_,Name,Arity,Cs0}, Ws0, File, Opts) ->
 
 body(Cs0, Name, Arity, St0) ->
     Anno = lineno_anno(element(2, hd(Cs0)), St0),
-    {Args,St1} = new_vars(Anno, Arity, St0),
+    {Args0,St1} = new_vars(Anno, Arity, St0),
+    Args = reverse(Args0),                      %Nicer order
     case clauses(Cs0, St1) of
 	{Cs1,[],St2} ->
 	    {Ps,St3} = new_vars(Arity, St2),    %Need new variables here
@@ -329,7 +330,7 @@ gexpr({protect,Line,Arg}, Bools0, St0) ->
 	    {#iprotect{anno=#a{anno=Anno},body=Eps++[E]},[],Bools0,St}
     end;
 gexpr({op,_,'andalso',_,_}=E0, Bools, St0) ->
-    {op,L,'andalso',E1,E2} = right_assoc(E0, 'andalso', St0),
+    {op,L,'andalso',E1,E2} = right_assoc(E0, 'andalso'),
     Anno = lineno_anno(L, St0),
     {#c_var{name=V0},St} = new_var(Anno, St0),
     V = {var,L,V0},
@@ -337,7 +338,7 @@ gexpr({op,_,'andalso',_,_}=E0, Bools, St0) ->
     E = make_bool_switch_guard(L, E1, V, E2, False),
     gexpr(E, Bools, St);
 gexpr({op,_,'orelse',_,_}=E0, Bools, St0) ->
-    {op,L,'orelse',E1,E2} = right_assoc(E0, 'orelse', St0),
+    {op,L,'orelse',E1,E2} = right_assoc(E0, 'orelse'),
     Anno = lineno_anno(L, St0),
     {#c_var{name=V0},St} = new_var(Anno, St0),
     V = {var,L,V0},
@@ -766,14 +767,16 @@ expr({op,_,'++',{lc,Llc,E,Qs0},More}, St0) ->
     {Qs,St2} = preprocess_quals(Llc, Qs0, St1),
     {Y,Yps,St} = lc_tq(Llc, E, Qs, Mc, St2),
     {Y,Mps++Yps,St};
-expr({op,L,'andalso',E1,E2}, St0) ->
+expr({op,_,'andalso',_,_}=E0, St0) ->
+    {op,L,'andalso',E1,E2} = right_assoc(E0, 'andalso'),
     Anno = lineno_anno(L, St0),
     {#c_var{name=V0},St} = new_var(Anno, St0),
     V = {var,L,V0},
     False = {atom,L,false},
     E = make_bool_switch(L, E1, V, E2, False, St0),
     expr(E, St);
-expr({op,L,'orelse',E1,E2}, St0) ->
+expr({op,_,'orelse',_,_}=E0, St0) ->
+    {op,L,'orelse',E1,E2} = right_assoc(E0, 'orelse'),
     Anno = lineno_anno(L, St0),
     {#c_var{name=V0},St} = new_var(Anno, St0),
     V = {var,L,V0},
@@ -2057,17 +2060,9 @@ fail_clause(Pats, Anno, Arg) ->
 			    args=[Arg]}]}.
 
 %% Optimization for Dialyzer.
-right_assoc(E, Op, St) ->
-    case member(dialyzer, St#core.opts) of
-        true ->
-            right_assoc2(E, Op);
-        false ->
-            E
-    end.
-
-right_assoc2({op,L1,Op,{op,L2,Op,E1,E2},E3}, Op) ->
-    right_assoc2({op,L2,Op,E1,{op,L1,Op,E2,E3}}, Op);
-right_assoc2(E, _Op) -> E.
+right_assoc({op,L1,Op,{op,L2,Op,E1,E2},E3}, Op) ->
+    right_assoc({op,L2,Op,E1,{op,L1,Op,E2,E3}}, Op);
+right_assoc(E, _Op) -> E.
 
 annotate_tuple(A, Es, St) ->
     case member(dialyzer, St#core.opts) of
@@ -2626,7 +2621,8 @@ cfun(#ifun{anno=A,id=Id,vars=Args,clauses=Lcs,fc=Lfc}, _As, St0) ->
      [],A#a.us,St2}.
 
 c_call_erl(Fun, Args) ->
-    cerl:c_call(cerl:c_atom(erlang), cerl:c_atom(Fun), Args).
+    As = [compiler_generated],
+    cerl:ann_c_call(As, cerl:c_atom(erlang), cerl:c_atom(Fun), Args).
 
 %% lit_vars(Literal) -> [Var].
 
diff --git a/lib/compiler/src/v3_kernel.erl b/lib/compiler/src/v3_kernel.erl
index aef0b6cc9f..e2b8787224 100644
--- a/lib/compiler/src/v3_kernel.erl
+++ b/lib/compiler/src/v3_kernel.erl
@@ -82,8 +82,7 @@
 -export([module/2,format_error/1]).
 
 -import(lists, [map/2,foldl/3,foldr/3,mapfoldl/3,splitwith/2,member/2,
-		keymember/3,keyfind/3,partition/2,droplast/1,last/1,sort/1,
-                reverse/1]).
+		keyfind/3,partition/2,droplast/1,last/1,sort/1,reverse/1]).
 -import(ordsets, [add_element/2,del_element/2,union/2,union/1,subtract/2]).
 -import(cerl, [c_tuple/1]).
 
@@ -1415,8 +1414,6 @@ is_remote_bif(_, _, _) -> false.
 %%  return multiple values.  Only used in bodies where a BIF may be
 %%  called for effect only.
 
-bif_vals(dsetelement, 3) -> 0;
-bif_vals(bs_context_to_binary, 1) -> 0;
 bif_vals(_, _) -> 1.
 
 bif_vals(_, _, _) -> 1.
@@ -1593,19 +1590,12 @@ match_var([U|Us], Cs0, Def, St) ->
 %%  constructor/constant as first argument.  Group the constructors
 %%  according to type, the order is really irrelevant but tries to be
 %%  smart.
-
-match_con(Us, Cs0, Def, St) ->
-    %% Expand literals at the top level.
-    Cs = [expand_pat_lit_clause(C) || C <- Cs0],
-    match_con_1(Us, Cs, Def, St).
-
-match_con_1([U|_Us] = L, Cs, Def, St0) ->
+match_con([U|_Us] = L, Cs, Def, St0) ->
     %% Extract clauses for different constructors (types).
     %%ok = io:format("match_con ~p~n", [Cs]),
-    Ttcs0 = select_types([k_binary], Cs) ++ select_bin_con(Cs) ++
-        select_types([k_cons,k_tuple,k_map,k_atom,k_float,
-                      k_int,k_nil], Cs),
-    Ttcs = opt_single_valued(Ttcs0),
+    Ttcs0 = select_types(Cs, [], [], [], [], [], [], [], [], []),
+    Ttcs1 = [{T, Types} || {T, [_ | _] = Types} <- Ttcs0],
+    Ttcs = opt_single_valued(Ttcs1),
     %%ok = io:format("ttcs = ~p~n", [Ttcs]),
     {Scs,St1} =
 	mapfoldl(fun ({T,Tcs}, St) ->
@@ -1616,8 +1606,41 @@ match_con_1([U|_Us] = L, Cs, Def, St0) ->
 		 St0, Ttcs),
     {build_alt_1st_no_fail(build_select(U, Scs), Def),St1}.
 
-select_types(Types, Cs) ->
-    [{T,Tcs} || T <- Types, begin Tcs = select(T, Cs), Tcs =/= [] end].
+select_types([NoExpC | Cs], Bin, BinCon, Cons, Tuple, Map, Atom, Float, Int, Nil) ->
+    C = expand_pat_lit_clause(NoExpC),
+    case clause_con(C) of
+	k_binary ->
+	    select_types(Cs, [C |Bin], BinCon, Cons, Tuple, Map, Atom, Float, Int, Nil);
+	k_bin_seg ->
+	    select_types(Cs, Bin, [C | BinCon], Cons, Tuple, Map, Atom, Float, Int, Nil);
+	k_bin_end ->
+	    select_types(Cs, Bin, [C | BinCon], Cons, Tuple, Map, Atom, Float, Int, Nil);
+	k_cons ->
+	    select_types(Cs, Bin, BinCon, [C | Cons], Tuple, Map, Atom, Float, Int, Nil);
+	k_tuple ->
+	    select_types(Cs, Bin, BinCon, Cons, [C | Tuple], Map, Atom, Float, Int, Nil);
+	k_map ->
+	    select_types(Cs, Bin, BinCon, Cons, Tuple, [C | Map], Atom, Float, Int, Nil);
+	k_atom ->
+	    select_types(Cs, Bin, BinCon, Cons, Tuple, Map, [C | Atom], Float, Int, Nil);
+	k_float ->
+	    select_types(Cs, Bin, BinCon, Cons, Tuple, Map, Atom, [C | Float], Int, Nil);
+	k_int ->
+	    select_types(Cs, Bin, BinCon, Cons, Tuple, Map, Atom, Float, [C | Int], Nil);
+	k_nil ->
+	    select_types(Cs, Bin, BinCon, Cons, Tuple, Map, Atom, Float, Int, [C | Nil])
+    end;
+select_types([], Bin, BinCon, Cons, Tuple, Map, Atom, Float, Int, Nil) ->
+    [{k_binary, reverse(Bin)}] ++ handle_bin_con(reverse(BinCon)) ++
+	[
+	    {k_cons, reverse(Cons)},
+	    {k_tuple, reverse(Tuple)},
+	    {k_map, reverse(Map)},
+	    {k_atom, reverse(Atom)},
+	    {k_float, reverse(Float)},
+	    {k_int, reverse(Int)},
+	    {k_nil, reverse(Nil)}
+	].
 
 expand_pat_lit_clause(#iclause{pats=[#ialias{pat=#k_literal{anno=A,val=Val}}=Alias|Ps]}=C) ->
     P = expand_pat_lit(Val, A),
@@ -1746,20 +1769,12 @@ combine_bin_segs(#k_bin_end{}) ->
 combine_bin_segs(_) ->
     throw(not_possible).
 
-%% select_bin_con([Clause]) -> [{Type,[Clause]}].
-%%  Extract clauses for the k_bin_seg constructor.  As k_bin_seg
+%% handle_bin_con([Clause]) -> [{Type,[Clause]}].
+%%  Handle clauses for the k_bin_seg constructor.  As k_bin_seg
 %%  matching can overlap, the k_bin_seg constructors cannot be
 %%  reordered, only grouped.
 
-select_bin_con(Cs0) ->
-    Cs1 = lists:filter(fun (C) ->
-			       Con = clause_con(C),
-			       (Con =:= k_bin_seg) or (Con =:= k_bin_end)
-		       end, Cs0),
-    select_bin_con_1(Cs1).
-
-
-select_bin_con_1(Cs) ->
+handle_bin_con(Cs) ->
     try
 	%% The usual way to match literals is to first extract the
 	%% value to a register, and then compare the register to the
@@ -1798,14 +1813,14 @@ select_bin_con_1(Cs) ->
 	end
     catch
 	throw:not_possible ->
-	    select_bin_con_2(Cs)
+	    handle_bin_con_not_possible(Cs)
     end.
 
-select_bin_con_2([C1|Cs]) ->
+handle_bin_con_not_possible([C1|Cs]) ->
     Con = clause_con(C1),
     {More,Rest} = splitwith(fun (C) -> clause_con(C) =:= Con end, Cs),
-    [{Con,[C1|More]}|select_bin_con_2(Rest)];
-select_bin_con_2([]) -> [].
+    [{Con,[C1|More]}|handle_bin_con_not_possible(Rest)];
+handle_bin_con_not_possible([]) -> [].
 
 %% select_bin_int([Clause]) -> {k_bin_int,[Clause]}
 %%  If the first pattern in each clause selects the same integer,
@@ -1905,10 +1920,6 @@ select_utf8(Val0) ->
 	    throw(not_possible)
     end.
 
-%% select(Con, [Clause]) -> [Clause].
-
-select(T, Cs) -> [ C || C <- Cs, clause_con(C) =:= T ].
-
 %% match_value([Var], Con, [Clause], Default, State) -> {SelectExpr,State}.
 %%  At this point all the clauses have the same constructor, we must
 %%  now separate them according to value.
@@ -2044,8 +2055,9 @@ get_match(#k_binary{}, St0) ->
     {[V]=Mes,St1} = new_vars(1, St0),
     {#k_binary{segs=V},Mes,St1};
 get_match(#k_bin_seg{size=#k_atom{val=all},next={k_bin_end,[]}}=Seg, St0) ->
-    {[S]=Vars,St1} = new_vars(1, St0),
-    {Seg#k_bin_seg{seg=S,next=[]},Vars,St1};
+    {[S,N0],St1} = new_vars(2, St0),
+    N = set_kanno(N0, [no_usage]),
+    {Seg#k_bin_seg{seg=S,next=N},[S],St1};
 get_match(#k_bin_seg{}=Seg, St0) ->
     {[S,N0],St1} = new_vars(2, St0),
     N = set_kanno(N0, [no_usage]),
@@ -2343,8 +2355,7 @@ uexpr(#k_bif{anno=A,op=Op,args=As}=Bif, {break,Rs}, St0) ->
     {Brs,St1} = bif_returns(Op, Rs, St0),
     {Bif#k_bif{anno=#k{us=Used,ns=lit_list_vars(Brs),a=A},ret=Brs},
      Used,St1};
-uexpr(#k_match{anno=A,vars=Vs0,body=B0}, Br, St0) ->
-    Vs = handle_reuse_annos(Vs0, St0),
+uexpr(#k_match{anno=A,vars=Vs,body=B0}, Br, St0) ->
     Rs = break_rets(Br),
     {B1,Bu,St1} = umatch(B0, Br, St0),
     case is_in_guard(St1) of
@@ -2374,9 +2385,10 @@ uexpr(#k_try{anno=A,arg=A0,vars=Vs,body=B0,evars=Evs,handler=H0},
 	true ->
 	    {[#k_var{name=X}],#k_var{name=X}} = {Vs,B0}, %Assertion.
 	    #k_atom{val=false} = H0,		%Assertion.
-	    {A1,Bu,St1} = uexpr(A0, Br, St0),
+	    {Avs,St1} = new_vars(length(Rs0), St0),
+	    {A1,Bu,St} = uexpr(A0, {break,Avs}, St1),
 	    {#k_protected{anno=#k{us=Bu,ns=lit_list_vars(Rs0),a=A},
-			  arg=A1,ret=Rs0},Bu,St1};
+			  arg=A1,ret=Rs0,inner=Avs},Bu,St};
 	false ->
 	    {Avs,St1} = new_vars(length(Vs), St0),
 	    {A1,Au,St2} = ubody(A0, {break,Avs}, St1),
@@ -2446,33 +2458,6 @@ make_fdef(Anno, Name, Arity, Vs, Body) ->
                      vars=Vs,body=Body,ret=[]},
     #k_fdef{anno=Anno,func=Name,arity=Arity,vars=Vs,body=Match}.
 
-
-%% handle_reuse_annos([#k_var{}], State) -> State.
-%%  In general, it is only safe to reuse a variable for a match context
-%%  if the original value of the variable will no longer be needed.
-%%
-%%  If a variable has been bound in an outer letrec and is therefore
-%%  free in the current function, the variable may still be used.
-%%  We don't bother to check whether the variable is actually used,
-%%  but simply clears the 'reuse_for_context' annotation for any variable
-%%  that is free.
-handle_reuse_annos(Vs, St) ->
-    [handle_reuse_anno(V, St) || V <- Vs].
-
-handle_reuse_anno(#k_var{anno=A}=V, St) ->
-    case member(reuse_for_context, A) of
-	false -> V;
-	true -> handle_reuse_anno_1(V, St)
-    end.
-
-handle_reuse_anno_1(#k_var{anno=Anno,name=Vname}=V, #kern{ff={F,A}}=St) ->
-    FreeVs = get_free(F, A, St),
-    case keymember(Vname, #k_var.name, FreeVs) of
-	true -> V#k_var{anno=Anno--[reuse_for_context]};
-	false -> V
-    end;
-handle_reuse_anno_1(V, _St) -> V.
-
 %% get_free(Name, Arity, State) -> [Free].
 %% store_free(Name, Arity, [Free], State) -> State.
 
@@ -2516,8 +2501,7 @@ umatch(#k_alt{anno=A,first=F0,then=T0}, Br, St0) ->
     Used = union(Fu, Tu),
     {#k_alt{anno=#k{us=Used,ns=[],a=A},first=F1,then=T1},
      Used,St2};
-umatch(#k_select{anno=A,var=V0,types=Ts0}, Br, St0) ->
-    V = handle_reuse_anno(V0, St0),
+umatch(#k_select{anno=A,var=V,types=Ts0}, Br, St0) ->
     {Ts1,Tus,St1} = umatch_list(Ts0, Br, St0),
     Used = case member(no_usage, get_kanno(V)) of
 	       true -> Tus;
diff --git a/lib/compiler/src/v3_kernel.hrl b/lib/compiler/src/v3_kernel.hrl
index e6f0d3c1f7..e26360a6da 100644
--- a/lib/compiler/src/v3_kernel.hrl
+++ b/lib/compiler/src/v3_kernel.hrl
@@ -66,7 +66,7 @@
 -record(k_receive_next, {anno=[]}).
 -record(k_try, {anno=[],arg,vars,body,evars,handler,ret=[]}).
 -record(k_try_enter, {anno=[],arg,vars,body,evars,handler}).
--record(k_protected, {anno=[],arg,ret=[]}).
+-record(k_protected, {anno=[],arg,ret=[],inner}).
 -record(k_catch, {anno=[],body,ret=[]}).
 
 -record(k_guard_match, {anno=[],vars,body,ret=[]}).
diff --git a/lib/compiler/test/Makefile b/lib/compiler/test/Makefile
index da5d207db9..db8eb7e2e1 100644
--- a/lib/compiler/test/Makefile
+++ b/lib/compiler/test/Makefile
@@ -14,6 +14,7 @@ MODULES= \
 	beam_except_SUITE \
 	beam_jump_SUITE \
 	beam_reorder_SUITE \
+	beam_ssa_SUITE \
 	beam_type_SUITE \
 	beam_utils_SUITE \
 	bif_SUITE \
@@ -52,6 +53,7 @@ NO_OPT= \
 	beam_except \
 	beam_jump \
 	beam_reorder \
+	beam_ssa \
 	beam_type \
 	beam_utils \
 	bif \
@@ -75,6 +77,7 @@ INLINE= \
 	andor \
 	apply \
 	beam_block \
+	beam_ssa \
 	beam_utils \
 	bif \
 	bs_bincomp \
@@ -94,16 +97,30 @@ INLINE= \
 	receive \
 	record
 
+R21= \
+        bs_construct \
+        bs_match
+
 CORE_MODULES = \
 	lfe_andor_SUITE \
 	lfe_guard_SUITE
 
+NO_MOD_OPT = $(NO_OPT)
+
+NO_SSA_OPT = $(NO_OPT)
+
 NO_OPT_MODULES= $(NO_OPT:%=%_no_opt_SUITE)
 NO_OPT_ERL_FILES= $(NO_OPT_MODULES:%=%.erl)
 POST_OPT_MODULES= $(NO_OPT:%=%_post_opt_SUITE)
 POST_OPT_ERL_FILES= $(POST_OPT_MODULES:%=%.erl)
 INLINE_MODULES= $(INLINE:%=%_inline_SUITE)
 INLINE_ERL_FILES= $(INLINE_MODULES:%=%.erl)
+R21_MODULES= $(R21:%=%_r21_SUITE)
+R21_ERL_FILES= $(R21_MODULES:%=%.erl)
+NO_MOD_OPT_MODULES= $(NO_MOD_OPT:%=%_no_module_opt_SUITE)
+NO_MOD_OPT_ERL_FILES= $(NO_MOD_OPT_MODULES:%=%.erl)
+NO_SSA_OPT_MODULES= $(NO_SSA_OPT:%=%_no_ssa_opt_SUITE)
+NO_SSA_OPT_ERL_FILES= $(NO_SSA_OPT_MODULES:%=%.erl)
 
 ERL_FILES= $(MODULES:%=%.erl)
 CORE_FILES= $(CORE_MODULES:%=%.core)
@@ -124,7 +141,7 @@ RELSYSDIR = $(RELEASE_PATH)/compiler_test
 # ----------------------------------------------------
 
 ERL_MAKE_FLAGS +=
-ERL_COMPILE_FLAGS += +clint +clint0
+ERL_COMPILE_FLAGS += +clint +clint0 +ssalint
 
 EBIN = .
 
@@ -132,15 +149,24 @@ EBIN = .
 # Targets
 # ----------------------------------------------------
 
-make_emakefile: $(NO_OPT_ERL_FILES) $(POST_OPT_ERL_FILES) $(INLINE_ERL_FILES)
+make_emakefile: $(NO_OPT_ERL_FILES) $(POST_OPT_ERL_FILES) $(NO_SSA_OPT_ERL_FILES) \
+  $(INLINE_ERL_FILES) $(R21_ERL_FILES) $(NO_MOD_OPT_ERL_FILES)
 	$(ERL_TOP)/make/make_emakefile $(ERL_COMPILE_FLAGS) -o$(EBIN) $(MODULES) \
 	> $(EMAKEFILE)
-	$(ERL_TOP)/make/make_emakefile +no_copt +no_postopt $(ERL_COMPILE_FLAGS) \
+	$(ERL_TOP)/make/make_emakefile +no_copt +no_postopt \
+	+no_ssa_opt +no_recv_opt $(ERL_COMPILE_FLAGS) \
 	-o$(EBIN) $(NO_OPT_MODULES) >> $(EMAKEFILE)
+	$(ERL_TOP)/make/make_emakefile +no_share_opt +no_bsm_opt +no_fun_opt \
+	+no_ssa_opt +no_recv_opt $(ERL_COMPILE_FLAGS) \
+	-o$(EBIN) $(NO_SSA_OPT_MODULES) >> $(EMAKEFILE)
 	$(ERL_TOP)/make/make_emakefile +no_copt $(ERL_COMPILE_FLAGS) \
 	-o$(EBIN) $(POST_OPT_MODULES) >> $(EMAKEFILE)
 	$(ERL_TOP)/make/make_emakefile +inline $(ERL_COMPILE_FLAGS) \
 	-o$(EBIN) $(INLINE_MODULES) >> $(EMAKEFILE)
+	$(ERL_TOP)/make/make_emakefile +r21 $(ERL_COMPILE_FLAGS) \
+	-o$(EBIN) $(R21_MODULES) >> $(EMAKEFILE)
+	$(ERL_TOP)/make/make_emakefile +no_module_opt $(ERL_COMPILE_FLAGS) \
+	-o$(EBIN) $(NO_MOD_OPT_MODULES) >> $(EMAKEFILE)
 	$(ERL_TOP)/make/make_emakefile +from_core $(ERL_COMPILE_FLAGS) \
 	-o$(EBIN) $(CORE_MODULES) >> $(EMAKEFILE)
 
@@ -161,12 +187,21 @@ docs:
 %_no_opt_SUITE.erl: %_SUITE.erl
 	sed -e 's;-module($(basename $<));-module($(basename $@));' $< > $@
 
+%_no_ssa_opt_SUITE.erl: %_SUITE.erl
+	sed -e 's;-module($(basename $<));-module($(basename $@));' $< > $@
+
 %_post_opt_SUITE.erl: %_SUITE.erl
 	sed -e 's;-module($(basename $<));-module($(basename $@));' $< > $@
 
 %_inline_SUITE.erl: %_SUITE.erl
 	sed -e 's;-module($(basename $<));-module($(basename $@));' $< > $@
 
+%_r21_SUITE.erl: %_SUITE.erl
+	sed -e 's;-module($(basename $<));-module($(basename $@));' $< > $@
+
+%_no_module_opt_SUITE.erl: %_SUITE.erl
+	sed -e 's;-module($(basename $<));-module($(basename $@));' $< > $@
+
 # ----------------------------------------------------
 # Release Target
 # ---------------------------------------------------- 
@@ -179,7 +214,9 @@ release_tests_spec: make_emakefile
 	$(INSTALL_DATA) compiler.spec compiler.cover \
 		$(EMAKEFILE) $(ERL_FILES) "$(RELSYSDIR)"
 	$(INSTALL_DATA) $(NO_OPT_ERL_FILES) $(POST_OPT_ERL_FILES) \
-		$(INLINE_ERL_FILES) "$(RELSYSDIR)"
+		$(INLINE_ERL_FILES) $(R21_ERL_FILES) \
+		$(NO_MOD_OPT_ERL_FILES) \
+		$(NO_SSA_OPT_ERL_FILES) "$(RELSYSDIR)"
 	$(INSTALL_DATA) $(CORE_FILES) "$(RELSYSDIR)"
 	for file in $(ERL_DUMMY_FILES); do \
 	    module=`basename $$file .erl`; \
diff --git a/lib/compiler/test/apply_SUITE.erl b/lib/compiler/test/apply_SUITE.erl
index 0f82a56fb7..2ee518b1a0 100644
--- a/lib/compiler/test/apply_SUITE.erl
+++ b/lib/compiler/test/apply_SUITE.erl
@@ -73,6 +73,7 @@ mfa(Config) when is_list(Config) ->
     {'EXIT',_} = (catch ?APPLY2(Mod, (id(bazzzzzz)), a, b)),
     {'EXIT',_} = (catch ?APPLY2({}, baz, a, b)),
     {'EXIT',_} = (catch ?APPLY2(?MODULE, [], a, b)),
+    {'EXIT',_} = (catch bad_literal_call(1)),
 
     ok = apply(Mod, foo, id([])),
     {[a,b|c]} = apply(Mod, bar, id([[a,b|c]])),
@@ -92,6 +93,13 @@ mfa(Config) when is_list(Config) ->
 
     apply(Mod, foo, []).
 
+%% The single call to this function with a literal argument caused type
+%% optimization to swap out the 'mod' field of a #b_remote{}, which was
+%% mishandled during code generation as it assumed that the module would always
+%% be an atom.
+bad_literal_call(I) ->
+    I:foo().
+
 foo() ->
     ok.
 
diff --git a/lib/compiler/test/beam_except_SUITE.erl b/lib/compiler/test/beam_except_SUITE.erl
index 2b4a780899..8e3b373d29 100644
--- a/lib/compiler/test/beam_except_SUITE.erl
+++ b/lib/compiler/test/beam_except_SUITE.erl
@@ -21,7 +21,7 @@
 
 -export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1,
 	 init_per_group/2,end_per_group/2,
-	 multiple_allocs/1,coverage/1]).
+	 multiple_allocs/1,bs_get_tail/1,coverage/1]).
 
 suite() -> [{ct_hooks,[ts_install_cth]}].
 
@@ -31,6 +31,7 @@ all() ->
 groups() ->
     [{p,[parallel],
       [multiple_allocs,
+       bs_get_tail,
        coverage]}].
 
 init_per_suite(Config) ->
@@ -63,6 +64,17 @@ place(lee) ->
 conditions() ->
     (talking = going) = storage + [large = wanted].
 
+bs_get_tail(Config) ->
+    {<<"abc">>,0,0,Config} = bs_get_tail_1(id(<<0:32, "abc">>), 0, 0, Config),
+    {'EXIT',
+     {function_clause,
+      [{?MODULE,bs_get_tail_1,[<<>>,0,0,Config],_}|_]}} =
+        (catch bs_get_tail_1(id(<<>>), 0, 0, Config)),
+    ok.
+
+bs_get_tail_1(<<_:32, Rest/binary>>, Z1, Z2, F1) ->
+    {Rest,Z1,Z2,F1}.
+
 coverage(_) ->
     File = {file,"fake.erl"},
     ok = fc(a),
@@ -72,9 +84,16 @@ coverage(_) ->
     {'EXIT',{function_clause,
 	     [{?MODULE,fc,[y],[File,{line,2}]}|_]}} =
 	(catch fc(y)),
-    {'EXIT',{function_clause,
-	     [{?MODULE,fc,[[a,b,c]],[File,{line,6}]}|_]}} =
-	(catch fc([a,b,c])),
+    case ?MODULE of
+        beam_except_no_opt_SUITE ->
+            %% There will be a different stack fram in
+            %% unoptimized code.
+            ok;
+        _ ->
+            {'EXIT',{function_clause,
+                     [{?MODULE,fc,[[a,b,c]],[File,{line,6}]}|_]}} =
+                (catch fc([a,b,c]))
+    end,
 
     {'EXIT',{undef,[{erlang,error,[a,b,c],_}|_]}} =
 	(catch erlang:error(a, b, c)),
@@ -83,8 +102,24 @@ coverage(_) ->
 	(catch bar(x)),
     {'EXIT',{{case_clause,{1}},[{?MODULE,bar,1,[File,{line,9}]}|_]}} =
 	(catch bar(0)),
+
+    Self = self(),
+    {'EXIT',{{strange,Self},[{?MODULE,foo,[any],[File,{line,14}]}|_]}} =
+        (catch foo(any)),
+
+    {ok,succeed,1,2} = foobar(succeed, 1, 2),
+    {'EXIT',{function_clause,[{?MODULE,foobar,[[fail],1,2],
+                               [{file,"fake.erl"},{line,16}]}|_]}} =
+        (catch foobar([fail], 1, 2)),
+    {'EXIT',{function_clause,[{?MODULE,fake_function_clause,[{a,b},42.0],_}|_]}} =
+        (catch fake_function_clause({a,b})),
+
     ok.
 
+fake_function_clause(A) -> error(function_clause, [A,42.0]).
+
+id(I) -> I.
+
 -file("fake.erl", 1).
 fc(a) ->	                                %Line 2
     ok;						%Line 3
@@ -96,3 +131,9 @@ bar(X) ->					%Line 8
     case {X+1} of				%Line 9
 	1 -> ok					%Line 10
     end.					%Line 11
+%% Cover collection code for function_clause exceptions.
+foo(A) ->                                       %Line 13
+    error({strange,self()}, [A]).               %Line 14
+%% Cover beam_except:tag_literal/1.
+foobar(A, B, C) when is_atom(A) ->              %Line 16
+    {ok,A,B,C}.                                 %Line 17
diff --git a/lib/compiler/test/beam_jump_SUITE.erl b/lib/compiler/test/beam_jump_SUITE.erl
index faedc0c1f1..a456f31d79 100644
--- a/lib/compiler/test/beam_jump_SUITE.erl
+++ b/lib/compiler/test/beam_jump_SUITE.erl
@@ -22,7 +22,8 @@
 -export([all/0,suite/0,groups/0,init_per_suite/1,end_per_suite/1,
 	 init_per_group/2,end_per_group/2,
 	 undefined_label/1,ambiguous_catch_try_state/1,
-         build_tuple/1]).
+         unsafe_move_elimination/1,build_tuple/1,
+         coverage/1]).
 
 suite() ->
     [{ct_hooks,[ts_install_cth]}].
@@ -34,7 +35,9 @@ groups() ->
     [{p,[parallel],
       [undefined_label,
        ambiguous_catch_try_state,
-       build_tuple
+       unsafe_move_elimination,
+       build_tuple,
+       coverage
       ]}].
 
 init_per_suite(Config) ->
@@ -75,6 +78,82 @@ checks(Wanted) ->
     %% Must be one line to cause the unsafe optimization.
     {catch case river() of sheet -> begin +Wanted, if "da" -> Wanted end end end, catch case river() of sheet -> begin + Wanted, if "da" -> Wanted end end end}.
 
+unsafe_move_elimination(_Config) ->
+    {{left,right,false},false} = unsafe_move_elimination_1(left, right, false),
+    {{false,right,false},false} = unsafe_move_elimination_1(false, right, true),
+    {{true,right,right},right} = unsafe_move_elimination_1(true, right, true),
+    [ok = unsafe_move_elimination_2(I) || I <- lists:seq(0,16)],
+    ok.
+
+unsafe_move_elimination_1(Left, Right, Simple0) ->
+    id(1),
+
+    %% The move at label 29 would be removed by beam_jump, which is unsafe because
+    %% the two select_val instructions have different source registers.
+    %%
+    %%   {select_val,{y,0},{f,25},{list,[{atom,true},{f,27},{atom,false},{f,29}]}}.
+    %%               ^^^^^                                  ^^^^^^^^^^^^^^^^^^^
+    %% {label,27}.
+    %%   {kill,{y,0}}.
+    %%   {move,{y,2},{x,0}}.
+    %%   {line,...}.
+    %%   {call,1,{f,31}}.
+    %%   {select_val,{x,0},{f,33},{list,[{atom,true},{f,35},{atom,false},{f,29}]}}.
+    %%               ^^^^^                                  ^^^^^^^^^^^^^^^^^^^
+    %% {label,29}.
+    %%   {move,{atom,false},{y,0}}.  <=== REMOVED (unsafely).
+    %%   {jump,{f,37}}.
+
+    Simple = case case Simple0 of
+                      false -> false;
+                      true -> id(Left)
+                  end
+             of
+                 false ->
+                     false;
+                 true ->
+                     id(Right)
+             end,
+    {id({Left,Right,Simple}),Simple}.
+
+unsafe_move_elimination_2(Int) ->
+    %% The type optimization pass would recognize that TagInt can only be
+    %% [0 .. 7], so the first 'case' would select_val over [0 .. 6] and swap
+    %% out the fail label with the block for 7.
+    %%
+    %% A later optimization would merge this block with 'expects_h' in the
+    %% second case, as the latter is only reachable from the former.
+    %%
+    %% ... but this broke down when the move elimination optimization didn't
+    %% take the fail label of the first select_val into account. This caused it
+    %% to believe that the only way to reach 'expects_h' was through the second
+    %% case when 'Tag' =:= 'h', which made it remove the move instruction
+    %% added in the first case, passing garbage to expects_h/2.
+    TagInt = Int band 2#111,
+    Tag = case TagInt of
+              0 -> a;
+              1 -> b;
+              2 -> c;
+              3 -> d;
+              4 -> e;
+              5 -> f;
+              6 -> g;
+              7 -> h
+          end,
+    case Tag of
+        g -> expects_g(TagInt, Tag);
+        h -> expects_h(TagInt, Tag);
+        _ -> Tag = id(Tag), ok
+    end.
+
+expects_g(6, Atom) ->
+    Atom = id(g),
+    ok.
+
+expects_h(7, Atom) ->
+    Atom = id(h),
+    ok.
+
 -record(message2, {id, p1}).
 -record(message3, {id, p1, p2}).
 
@@ -87,3 +166,45 @@ do_build_tuple(Message) ->
 	    Res = {res, rand:uniform(100)},
 	    {Message#message3.id, Res}
     end.
+
+coverage(_Config) ->
+    ok = coverage_1(ok),
+    {error,badarg} = coverage_1({error,badarg}),
+
+    gt = coverage_2(100, 42),
+    le = coverage_2(100, 999),
+    le = coverage_2([], []),
+    gt = coverage_2([], xxx),
+
+    ok.
+
+coverage_1(Var) ->
+    case id(Var) of
+	ok -> ok;
+	Error -> Error
+    end.
+
+%% Cover beam_jump:invert_test(is_ne_exact).
+coverage_2(Pre1, Pre2) ->
+    case
+        case Pre1 == [] of
+            false ->
+                false;
+            true ->
+                Pre2 /= []
+        end
+    of
+        true ->
+            gt;
+        false ->
+            case Pre1 > Pre2 of
+                true ->
+                    gt;
+                false ->
+                    le
+            end
+    end.
+
+
+id(I) ->
+    I.
diff --git a/lib/compiler/test/beam_ssa_SUITE.erl b/lib/compiler/test/beam_ssa_SUITE.erl
new file mode 100644
index 0000000000..15cf9bcbf3
--- /dev/null
+++ b/lib/compiler/test/beam_ssa_SUITE.erl
@@ -0,0 +1,497 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2018. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+-module(beam_ssa_SUITE).
+
+-export([all/0,suite/0,groups/0,init_per_suite/1,end_per_suite/1,
+	 init_per_group/2,end_per_group/2,
+         calls/1,tuple_matching/1,recv/1,maps/1,
+         cover_ssa_dead/1,combine_sw/1,share_opt/1]).
+
+suite() -> [{ct_hooks,[ts_install_cth]}].
+
+all() ->
+    [{group,p}].
+
+groups() ->
+    [{p,test_lib:parallel(),
+      [tuple_matching,
+       calls,
+       recv,
+       maps,
+       cover_ssa_dead,
+       combine_sw,
+       share_opt
+      ]}].
+
+init_per_suite(Config) ->
+    test_lib:recompile(?MODULE),
+    Config.
+
+end_per_suite(_Config) ->
+    ok.
+
+init_per_group(_GroupName, Config) ->
+    Config.
+
+end_per_group(_GroupName, Config) ->
+    Config.
+
+calls(Config) ->
+    Ret = {return,value,Config},
+    Ret = fun_call(fun(42) -> ok end, Ret),
+    Ret = apply_fun(fun(a, b) -> ok end, [a,b], Ret),
+    Ret = apply_mfa(test_lib, id, [anything], Ret),
+    {'EXIT',{badarg,_}} = (catch call_error()),
+    {'EXIT',{badarg,_}} = (catch call_error(42)),
+    5 = start_it([erlang,length,1,2,3,4,5]),
+    ok.
+
+fun_call(Fun, X0) ->
+    X = id(X0),
+    Fun(42),
+    X.
+
+apply_fun(Fun, Args, X0) ->
+    X = id(X0),
+    apply(Fun, Args),
+    X.
+
+apply_mfa(Mod, Name, Args, X0) ->
+    X = id(X0),
+    apply(Mod, Name, Args),
+    X.
+
+call_error() ->
+    error(badarg),
+    ok.
+
+call_error(I) ->
+    <<I:(-8)>>,
+    ok.
+
+start_it([_|_]=MFA) ->
+    case MFA of
+	[M,F|Args] -> M:F(Args)
+    end.
+
+tuple_matching(_Config) ->
+    do_tuple_matching({tag,42}),
+
+    true = is_two_tuple({a,b}),
+    false = is_two_tuple({a,b,c}),
+    false = is_two_tuple(atom),
+
+    ok.
+
+do_tuple_matching(Arg) ->
+    Res = do_tuple_matching_1(Arg),
+    Res = do_tuple_matching_2(Arg),
+    Res = do_tuple_matching_3(Arg),
+    Res.
+
+do_tuple_matching_1({tag,V}) ->
+    {ok,V}.
+
+do_tuple_matching_2(Tuple) when is_tuple(Tuple) ->
+    Size = tuple_size(Tuple),
+    if
+        Size =:= 2 ->
+            {ok,element(2, Tuple)}
+    end.
+
+do_tuple_matching_3(Tuple) when is_tuple(Tuple) ->
+    Size = tuple_size(Tuple),
+    if
+        Size =:= 2 ->
+            2 = id(Size),
+            {ok,element(2, Tuple)}
+    end.
+
+is_two_tuple(Arg) ->
+    case is_tuple(Arg) of
+        false -> false;
+        true -> tuple_size(Arg) == 2
+    end.
+
+-record(reporter_state, {res,run_config}).
+-record(run_config, {report_interval=0}).
+
+recv(_Config) ->
+    Parent = self(),
+
+    %% Test sync_wait_mon/2.
+    Succ = fun() -> Parent ! {ack,self(),{result,42}} end,
+    {result,42} = sync_wait_mon(spawn_monitor(Succ), infinity),
+
+    Down = fun() -> exit(down) end,
+    {error,down} = sync_wait_mon(spawn_monitor(Down), infinity),
+
+    Exit = fun() ->
+                   Self = self(),
+                   spawn(fun() -> exit(Self, kill_me) end),
+                   receive _ -> ok end
+           end,
+    {error,kill_me} = sync_wait_mon(spawn_monitor(Exit), infinity),
+
+    Timeout = fun() -> receive _ -> ok end end,
+    {error,timeout} = sync_wait_mon(spawn_monitor(Timeout), 0),
+
+    %% Test reporter_loop/1.
+    {a,Parent} = reporter_loop(#reporter_state{res={a,Parent},
+                                               run_config=#run_config{}}),
+
+    %% Test bad_sink/0.
+    bad_sink(),
+
+    %% Test tricky_recv_1/0.
+    self() ! 1,
+    a = tricky_recv_1(),
+    self() ! 2,
+    b = tricky_recv_1(),
+
+    %% Test tricky_recv_2/0.
+    self() ! 1,
+    {1,yes} = tricky_recv_2(),
+    self() ! 2,
+    {2,maybe} = tricky_recv_2(),
+
+    %% Test 'receive after infinity' in try/catch.
+    Pid = spawn(fun recv_after_inf_in_try/0),
+    exit(Pid, done),
+
+    %% Test tricky_recv_3().
+    self() ! {{self(),r0},{1,42,"name"}},
+    {Parent,r0,[<<1:32,1:8,42:8>>,"name",0]} = tricky_recv_3(),
+    self() ! {{self(),r1},{2,99,<<"data">>}},
+    {Parent,r1,<<1:32,2:8,99:8,"data">>} = tricky_recv_3(),
+
+    %% Test tricky_recv_4().
+    self() ! {[self(),r0],{1,42,"name"}},
+    {Parent,r0,[<<1:32,1:8,42:8>>,"name",0]} = tricky_recv_4(),
+    self() ! {[self(),r1],{2,99,<<"data">>}},
+    {Parent,r1,<<1:32,2:8,99:8,"data">>} = tricky_recv_4(),
+
+    ok.
+
+sync_wait_mon({Pid, Ref}, Timeout) ->
+    receive
+	{ack,Pid,Return} ->
+	    erlang:demonitor(Ref, [flush]),
+	    Return;
+	{'DOWN',Ref,_Type,Pid,Reason} ->
+	    {error,Reason};
+	{'EXIT',Pid,Reason} ->
+	    erlang:demonitor(Ref, [flush]),
+	    {error,Reason}
+    after Timeout ->
+            erlang:demonitor(Ref, [flush]),
+            exit(Pid, kill),
+            {error,timeout}
+    end.
+
+reporter_loop(State) ->
+    RC = State#reporter_state.run_config,
+    receive after RC#run_config.report_interval ->
+                    State#reporter_state.res
+    end.
+
+bad_sink() ->
+    {ok,Pid} = my_spawn(self()),
+    %% The get_tuple_element instruction for the matching
+    %% above was sinked into the receive loop. That will
+    %% not work (and would be bad for performance if it
+    %% would work).
+    receive
+        {ok,Pid} ->
+            ok;
+        error ->
+            exit(failed)
+    end,
+    exit(Pid, kill).
+
+my_spawn(Parent) ->
+    Pid = spawn(fun() ->
+                        Parent ! {ok,self()},
+                        receive _ -> ok end
+                end),
+    {ok,Pid}.
+
+tricky_recv_1() ->
+    receive
+        X=1 ->
+            id(42),
+            a;
+        X=2 ->
+            b
+    end,
+    case X of
+        1 -> a;
+        2 -> b
+    end.
+
+tricky_recv_2() ->
+    receive
+        X=1 ->
+            Y = case id(X) of
+                    1 -> yes;
+                    _ -> no
+                end,
+            a;
+        X=2 ->
+            Y = maybe,
+            b
+    end,
+    {X,Y}.
+
+recv_after_inf_in_try() ->
+    try
+        %% Used to crash beam_kernel_to_ssa.
+        receive after infinity -> ok end
+    catch
+	_A:_B ->
+	    receive after infinity -> ok end
+    end.
+
+tricky_recv_3() ->
+    {Pid, R, Request} =
+	receive
+	    {{Pid0,R0}, {1, Proto0, Name0}} ->
+		{Pid0, R0,
+		 [<<1:32, 1:8, Proto0:8>>,Name0,0]};
+	    {{Pid1,R1}, {2, Proto1, Data1}}  ->
+		{Pid1, R1,
+		 <<1:32, 2:8, Proto1:8, Data1/binary>>}
+	end,
+    id({Pid,R,Request}).
+
+tricky_recv_4() ->
+    {Pid, R, Request} =
+	receive
+	    {[Pid0,R0], {1, Proto0, Name0}} ->
+		{Pid0, R0,
+		 [<<1:32, 1:8, Proto0:8>>,Name0,0]};
+	    {[Pid1,R1], {2, Proto1, Data1}}  ->
+		{Pid1, R1,
+		 <<1:32, 2:8, Proto1:8, Data1/binary>>}
+	end,
+    id({Pid,R,Request}).
+
+maps(_Config) ->
+    {'EXIT',{{badmatch,#{}},_}} = (catch maps_1(any)),
+    ok.
+
+maps_1(K) ->
+    _ = id(42),
+    #{K:=V} = #{},
+    V.
+
+-record(wx_ref, {type=any_type,ref=any_ref}).
+
+cover_ssa_dead(_Config) ->
+    str = format_str(str, escapable, [], true),
+    [iolist,str] = format_str(str, escapable, iolist, true),
+    bad = format_str(str, not_escapable, [], true),
+    bad = format_str(str, not_escapable, iolist, true),
+    bad = format_str(str, escapable, [], false),
+    bad = format_str(str, escapable, [], bad),
+
+    DefWxRef = #wx_ref{},
+    {DefWxRef,77,9999,[]} = contains(#wx_ref{}, 77, 9999),
+    {DefWxRef,77.0,9999,[]} = contains(#wx_ref{}, 77.0, 9999),
+    {DefWxRef,77,9999.0,[]} = contains(#wx_ref{}, 77, 9999.0),
+    {DefWxRef,77.0,9999.0,[]} = contains(#wx_ref{}, 77.0, 9999.0),
+    {any_type,any_ref,42,43,[option]} = contains(#wx_ref{}, {42,43}, [option]),
+    {any_type,any_ref,42,43,[]} = contains(#wx_ref{}, {42,43}, []),
+    {any_type,any_ref,42.0,43,[]} = contains(#wx_ref{}, {42.0,43}, []),
+    {any_type,any_ref,42,43.0,[]} = contains(#wx_ref{}, {42,43.0}, []),
+    {any_type,any_ref,42.0,43.0,[]} = contains(#wx_ref{}, {42.0,43.0}, []),
+
+    nope = conv_alub(false, '=:='),
+    ok = conv_alub(true, '=:='),
+    ok = conv_alub(true, none),
+    error = conv_alub(false, none),
+
+    {false,false} = eval_alu(false, false, false),
+    {true,false}  = eval_alu(false, false, true),
+    {false,true}  = eval_alu(false, true, false),
+    {false,false} = eval_alu(false, true, true),
+    {false,true}  = eval_alu(true, false, false),
+    {false,false} = eval_alu(true, false, true),
+    {true,true}   = eval_alu(true, true, false),
+    {false,true}  = eval_alu(true, true, true),
+
+    100.0 = percentage(1.0, 0.0),
+    100.0 = percentage(1, 0),
+    0.0 = percentage(0, 0),
+    0.0 = percentage(0.0, 0.0),
+    40.0 = percentage(4.0, 10.0),
+    60.0 = percentage(6, 10),
+
+    %% Cover '=:=', followed by '=/='.
+    false = 'cover__=:=__=/='(41),
+    true = 'cover__=:=__=/='(42),
+    false = 'cover__=:=__=/='(43),
+
+    %% Cover '<', followed by '=/='.
+    true = 'cover__<__=/='(41),
+    false = 'cover__<__=/='(42),
+    false = 'cover__<__=/='(43),
+
+    %% Cover '=<', followed by '=/='.
+    true = 'cover__=<__=/='(41),
+    true = 'cover__=<__=/='(42),
+    false = 'cover__=<__=/='(43),
+
+    %% Cover '>=', followed by '=/='.
+    false = 'cover__>=__=/='(41),
+    true = 'cover__>=__=/='(42),
+    true = 'cover__>=__=/='(43),
+
+    %% Cover '>', followed by '=/='.
+    false = 'cover__>__=/='(41),
+    false = 'cover__>__=/='(42),
+    true = 'cover__>__=/='(43),
+
+    ok.
+
+'cover__=:=__=/='(X) when X =:= 42 -> X =/= 43;
+'cover__=:=__=/='(_) -> false.
+
+'cover__<__=/='(X) when X < 42 -> X =/= 42;
+'cover__<__=/='(_) -> false.
+
+'cover__=<__=/='(X) when X =< 42 -> X =/= 43;
+'cover__=<__=/='(_) -> false.
+
+'cover__>=__=/='(X) when X >= 42 -> X =/= 41;
+'cover__>=__=/='(_) -> false.
+
+'cover__>__=/='(X) when X > 42 -> X =/= 42;
+'cover__>__=/='(_) -> false.
+
+format_str(Str, FormatData, IoList, EscChars) ->
+    Escapable = FormatData =:= escapable,
+    case id(Str) of
+        IoStr when Escapable, EscChars, IoList == [] ->
+            id(IoStr);
+        IoStr when Escapable, EscChars ->
+            [IoList,id(IoStr)];
+        _ ->
+            bad
+    end.
+
+contains(This, X, Y) when is_record(This, wx_ref), is_number(X), is_number(Y) ->
+    {This,X,Y,[]};
+contains(#wx_ref{type=ThisT,ref=ThisRef}, {CX,CY}, Options)
+  when is_number(CX), is_number(CY), is_list(Options) ->
+    {ThisT,ThisRef,CX,CY,Options}.
+
+conv_alub(HasDst, CmpOp) ->
+    case (not HasDst) andalso CmpOp =/= none of
+        true -> nope;
+        false ->
+            case HasDst of
+                false -> error;
+                true -> ok
+            end
+    end.
+
+eval_alu(Sign1, Sign2, N) ->
+    V = (Sign1 andalso Sign2 andalso (not N))
+        or ((not Sign1) andalso (not Sign2) andalso N),
+    C = (Sign1 andalso Sign2)
+          or ((not N) andalso (Sign1 orelse Sign2)),
+    {V,C}.
+
+percentage(Divident, Divisor) ->
+    if Divisor == 0 andalso Divident /= 0 ->
+            100.0;
+       Divisor == 0 ->
+            0.0;
+       true ->
+            Divident / Divisor * 100
+    end.
+
+combine_sw(_Config) ->
+    [a] = do_comb_sw_1(a),
+    [b,b] = do_comb_sw_1(b),
+    [c] = do_comb_sw_1(c),
+    [c] = do_comb_sw_1(c),
+    [] = do_comb_sw_1(z),
+
+    [a] = do_comb_sw_2(a),
+    [b2,b1] = do_comb_sw_2(b),
+    [c] = do_comb_sw_2(c),
+    [c] = do_comb_sw_2(c),
+    [] = do_comb_sw_2(z),
+
+    ok.
+
+do_comb_sw_1(X) ->
+    put(?MODULE, []),
+    if
+        X == a; X == b ->
+            put(?MODULE, [X|get(?MODULE)]);
+        true ->
+            ok
+    end,
+    if
+        X == b; X == c ->
+            put(?MODULE, [X|get(?MODULE)]);
+        true ->
+            ok
+    end,
+    erase(?MODULE).
+
+do_comb_sw_2(X) ->
+    put(?MODULE, []),
+    case X of
+        a ->
+            put(?MODULE, [a|get(?MODULE)]);
+        b ->
+            put(?MODULE, [b1|get(?MODULE)]);
+        _ ->
+            ok
+    end,
+    case X of
+        b ->
+            put(?MODULE, [b2|get(?MODULE)]);
+        c ->
+            put(?MODULE, [c|get(?MODULE)]);
+        _ ->
+            ok
+    end,
+    erase(?MODULE).
+
+share_opt(_Config) ->
+    ok = do_share_opt(0).
+
+do_share_opt(A) ->
+    %% The compiler would be stuck in an infinite loop in beam_ssa_share.
+    case A of
+        0 -> a;
+        1 -> b;
+        2 -> c
+    end,
+    receive after 1 -> ok end.
+
+
+%% The identity function.
+id(I) -> I.
diff --git a/lib/compiler/test/beam_type_SUITE.erl b/lib/compiler/test/beam_type_SUITE.erl
index 061076b3ff..882e281a44 100644
--- a/lib/compiler/test/beam_type_SUITE.erl
+++ b/lib/compiler/test/beam_type_SUITE.erl
@@ -21,9 +21,10 @@
 
 -export([all/0,suite/0,groups/0,init_per_suite/1,end_per_suite/1,
 	 init_per_group/2,end_per_group/2,
-	 integers/1,coverage/1,booleans/1,setelement/1,cons/1,
-	 tuple/1,record_float/1,binary_float/1,float_compare/1,
-	 arity_checks/1,elixir_binaries/1,find_best/1]).
+	 integers/1,numbers/1,coverage/1,booleans/1,setelement/1,
+	 cons/1,tuple/1,record_float/1,binary_float/1,float_compare/1,
+	 arity_checks/1,elixir_binaries/1,find_best/1,
+         test_size/1,cover_lists_functions/1]).
 
 suite() -> [{ct_hooks,[ts_install_cth]}].
 
@@ -33,6 +34,7 @@ all() ->
 groups() ->
     [{p,[parallel],
       [integers,
+       numbers,
        coverage,
        booleans,
        setelement,
@@ -43,7 +45,9 @@ groups() ->
        float_compare,
        arity_checks,
        elixir_binaries,
-       find_best
+       find_best,
+       test_size,
+       cover_lists_functions
       ]}].
 
 init_per_suite(Config) ->
@@ -113,8 +117,8 @@ do_integers_4(_, _, Res) ->
     Res.
 
 do_integers_5(X0, Y0) ->
-    %% X and Y will use the same register.
-    X = X0 band 1,
+    %% _X and Y will use the same register.
+    _X = X0 band 1,
     Y = Y0 band 3,
     case Y of
         0 -> zero;
@@ -123,6 +127,59 @@ do_integers_5(X0, Y0) ->
         3 -> three
     end.
 
+numbers(_Config) ->
+    Int = id(42),
+    true = is_integer(Int),
+    true = is_number(Int),
+    false = is_float(Int),
+
+    Float = id(42.0),
+    true = is_float(Float),
+    true = is_number(Float),
+    false = is_integer(Float),
+
+    Number = id(1) + id(2),
+    true = is_number(Number),
+    true = is_integer(Number),
+    false = is_float(Number),
+
+    AnotherNumber = id(99.0) + id(1),
+    true = is_float(AnotherNumber),
+    true = is_number(AnotherNumber),
+    false = is_integer(AnotherNumber),
+
+    NotNumber = id(atom),
+    true = is_atom(NotNumber),
+    false = is_number(NotNumber),
+    false = is_integer(NotNumber),
+    false = is_float(NotNumber),
+
+    true = is_number(Int),
+    true = is_number(Float),
+    true = is_number(Number),
+    true = is_number(AnotherNumber),
+
+    %% Cover beam_ssa_type:join/2.
+
+    Join1 = case id(a) of
+                a -> 3 + id(7);                 %Number.
+                b -> id(5) / id(2)              %Float.
+            end,
+    true = is_integer(Join1),
+
+    Join2 = case id(a) of
+                a -> id(5) / 2;                 %Float.
+                b -> 3 + id(7)                  %Number.
+            end,
+    true = is_float(Join2),
+
+    %% Cover beam_ssa_type:meet/2.
+
+    Meet1 = id(0) + -10.0,                       %Float.
+    10.0 = abs(Meet1),                           %Number.
+
+    ok.
+
 coverage(Config) ->
     {'EXIT',{badarith,_}} = (catch id(1) bsl 0.5),
     {'EXIT',{badarith,_}} = (catch id(2.0) bsl 2),
@@ -157,18 +214,59 @@ coverage(Config) ->
              [_|_] ->
                  ok
          end,
+
+    %% Cover beam_type:verified_type(none).
+    {'EXIT',{badarith,_}} = (catch (id(2) / id(1)) band 16#ff),
+
     ok.
 
 booleans(_Config) ->
-    {'EXIT',{{case_clause,_},_}} = (catch do_booleans(42)),
+    {'EXIT',{{case_clause,_},_}} = (catch do_booleans_1(42)),
+
+    ok = do_booleans_2(42, 41),
+    error = do_booleans_2(42, 42),
+
+    AnyAtom = id(atom),
+    true = is_atom(AnyAtom),
+    false = is_boolean(AnyAtom),
+
+    MaybeBool = id(maybe),
+    case MaybeBool of
+        true -> ok;
+        maybe -> ok;
+        false -> ok
+    end,
+    false = is_boolean(MaybeBool),
+
+    NotBool = id(a),
+    case NotBool of
+        a -> ok;
+        b -> ok;
+        c -> ok
+    end,
+    false = is_boolean(NotBool),
+
     ok.
 
-do_booleans(B) ->
+do_booleans_1(B) ->
     case is_integer(B) of
 	yes -> yes;
 	no -> no
     end.
 
+do_booleans_2(A, B) ->
+    Not = not do_booleans_cmp(A, B),
+    case Not of
+        true ->
+            case Not of
+                true -> error;
+                false -> ok
+            end;
+        false -> ok
+    end.
+
+do_booleans_cmp(A, B) -> A > B.
+
 setelement(_Config) ->
     T0 = id({a,42}),
     {a,_} = T0,
@@ -177,13 +275,59 @@ setelement(_Config) ->
 
 cons(_Config) ->
     [did] = cons(assigned, did),
+
+    true = cons_is_empty_list([]),
+    false = cons_is_empty_list([a]),
+
+    false = cons_not(true),
+    true = cons_not(false),
+
+    {$a,"bc"} = cons_hdtl(true),
+    {$d,"ef"} = cons_hdtl(false),
     ok.
 
 cons(assigned, Instrument) ->
     [Instrument] = [did].
 
+cons_is_empty_list(L) ->
+    Cons = case L of
+               [] -> "true";
+               _ -> "false"
+           end,
+    id(1),
+    case Cons of
+        "true" -> true;
+        "false" -> false
+    end.
+
+cons_not(B) ->
+    Cons = case B of
+               true -> "true";
+               false -> "false"
+           end,
+    id(1),
+    case Cons of
+        "true" -> false;
+        "false" -> true
+    end.
+
+cons_hdtl(B) ->
+    Cons = case B of
+               true -> "abc";
+               false -> "def"
+           end,
+    id(1),
+    {id(hd(Cons)),id(tl(Cons))}.
+
+-record(bird, {a=a,b=id(42)}).
+
 tuple(_Config) ->
     {'EXIT',{{badmatch,{necessary}},_}} = (catch do_tuple()),
+
+    [] = [X || X <- [], #bird{a = a} == {r,X,foo}],
+    [] = [X || X <- [], #bird{b = b} == {bird,X}],
+    [] = [X || X <- [], 3 == X#bird.a],
+
     ok.
 
 do_tuple() ->
@@ -320,6 +464,28 @@ find_best([], <<"a">>) ->
 find_best([], nil) ->
     {error,<<"should not get here">>}.
 
+test_size(_Config) ->
+    2 = do_test_size({a,b}),
+    4 = do_test_size(<<42:32>>),
+    ok.
+
+do_test_size(Term) when is_tuple(Term) ->
+    size(Term);
+do_test_size(Term) when is_binary(Term) ->
+    size(Term).
+
+cover_lists_functions(Config) ->
+    case lists:suffix([no|Config], Config) of
+        true ->
+            ct:fail(should_be_false);
+        false ->
+            ok
+    end,
+    Zipped = lists:zipwith(fun(A, B) -> {A,B} end,
+                           lists:duplicate(length(Config), zip),
+                           Config),
+    true = is_list(Zipped),
+    ok.
 
 id(I) ->
     I.
diff --git a/lib/compiler/test/beam_utils_SUITE.erl b/lib/compiler/test/beam_utils_SUITE.erl
index ff0f72d519..eb0af59f9d 100644
--- a/lib/compiler/test/beam_utils_SUITE.erl
+++ b/lib/compiler/test/beam_utils_SUITE.erl
@@ -197,7 +197,7 @@ do_bs_init_4(Arg1, Arg2) ->
                          id(Rewrite)
                  end/binary,
                  "/shared">>);
-        Other ->
+        _Other ->
             error
     end.
 
@@ -553,7 +553,7 @@ not_used_p(_C, S, K, L) when is_record(K, k) ->
             id(K)
     end.
 
-is_used_fr(Config) ->
+is_used_fr(_Config) ->
     1 = is_used_fr(self(), self()),
     1 = is_used_fr(self(), other),
     receive 1 -> ok end,
@@ -572,7 +572,7 @@ is_used_fr(X, Y) ->
     X ! 1.
 
 %% ERL-778.
-unsafe_is_function(Config) ->
+unsafe_is_function(_Config) ->
     {undefined,any} = unsafe_is_function(undefined, any),
     {ok,any} = unsafe_is_function(fun() -> ok end, any),
     {'EXIT',{{case_clause,_},_}} = (catch unsafe_is_function(fun(_) -> ok end, any)),
diff --git a/lib/compiler/test/beam_validator_SUITE.erl b/lib/compiler/test/beam_validator_SUITE.erl
index d3e544a9cc..de5a3c2873 100644
--- a/lib/compiler/test/beam_validator_SUITE.erl
+++ b/lib/compiler/test/beam_validator_SUITE.erl
@@ -34,7 +34,8 @@
 	 undef_label/1,illegal_instruction/1,failing_gc_guard_bif/1,
 	 map_field_lists/1,cover_bin_opt/1,
 	 val_dsetel/1,bad_tuples/1,bad_try_catch_nesting/1,
-         receive_stacked/1]).
+         receive_stacked/1,aliased_types/1,type_conflict/1,
+         infer_on_eq/1]).
 
 -include_lib("common_test/include/ct.hrl").
 
@@ -63,7 +64,8 @@ groups() ->
        undef_label,illegal_instruction,failing_gc_guard_bif,
        map_field_lists,cover_bin_opt,val_dsetel,
        bad_tuples,bad_try_catch_nesting,
-       receive_stacked]}].
+       receive_stacked,aliased_types,type_conflict,
+       infer_on_eq]}].
 
 init_per_suite(Config) ->
     test_lib:recompile(?MODULE),
@@ -107,13 +109,12 @@ xrange(Config) when is_list(Config) ->
     Errors = do_val(xrange, Config),
     [{{t,sum_1,2},
       {{bif,'+',{f,0},[{x,-1},{x,1}],{x,0}},4,
-       {uninitialized_reg,{x,-1}}}},
+       {bad_register,{x,-1}}}},
      {{t,sum_2,2},
-      {{bif,'+',{f,0},[{x,0},{x,1023}],{x,0}},4,
-       {uninitialized_reg,{x,1023}}}},
+      {{bif,'+',{f,0},[{x,0},{x,1023}],{x,0}},4,limit}},
      {{t,sum_3,2},
       {{bif,'+',{f,0},[{x,0},{x,1}],{x,-1}},4,
-       {invalid_store,{x,-1},number}}},
+       {bad_register,{x,-1}}}},
      {{t,sum_4,2},
       {{bif,'+',{f,0},[{x,0},{x,1}],{x,1023}},4,limit}}] = Errors,
     ok.
@@ -122,15 +123,15 @@ yrange(Config) when is_list(Config) ->
     Errors = do_val(yrange, Config),
     [{{t,sum_1,2},
       {{move,{x,1},{y,-1}},5,
-       {invalid_store,{y,-1},term}}},
+       {bad_register,{y,-1}}}},
      {{t,sum_2,2},
       {{bif,'+',{f,0},[{x,0},{y,1024}],{x,0}},7,
-       {uninitialized_reg,{y,1024}}}},
+       limit}},
      {{t,sum_3,2},
       {{move,{x,1},{y,1024}},5,limit}},
      {{t,sum_4,2},
       {{move,{x,1},{y,-1}},5,
-       {invalid_store,{y,-1},term}}}] = Errors,
+       {bad_register,{y,-1}}}}] = Errors,
     ok.
 
 stack(Config) when is_list(Config) ->
@@ -157,9 +158,9 @@ call_last(Config) when is_list(Config) ->
 merge_undefined(Config) when is_list(Config) ->
     Errors = do_val(merge_undefined, Config),
     [{{t,handle_call,2},
-      {{call_ext,1,{extfunc,erlang,exit,1}},
-       10,
-       {uninitialized_reg,{y,0}}}}] = Errors,
+      {{call_ext,2,{extfunc,debug,filter,2}},
+       22,
+       {uninitialized_reg,{y,_}}}}] = Errors,
     ok.
 
 uninit(Config) when is_list(Config) ->
@@ -178,7 +179,7 @@ unsafe_catch(Config) when is_list(Config) ->
     Errors = do_val(unsafe_catch, Config),
     [{{t,small,2},
       {{bs_put_integer,{f,0},{integer,16},1,
-	{field_flags,[unsigned,big]},{y,0}},
+        {field_flags,[unsigned,big]},{y,0}},
        20,
        {unassigned,{y,0}}}}] = Errors,
     ok.
@@ -211,19 +212,19 @@ bad_catch_try(Config) when is_list(Config) ->
     Errors = do_val(bad_catch_try, Config),
     [{{bad_catch_try,bad_1,1},
       {{'catch',{x,0},{f,3}},
-       5,{invalid_store,{x,0},{catchtag,[3]}}}},
+       5,{invalid_tag_register,{x,0}}}},
      {{bad_catch_try,bad_2,1},
       {{catch_end,{x,9}},
-       8,{source_not_y_reg,{x,9}}}},
+       8,{invalid_tag_register,{x,9}}}},
      {{bad_catch_try,bad_3,1},
-      {{catch_end,{y,1}},9,{bad_type,{atom,kalle}}}},
+      {{catch_end,{y,1}},9,{invalid_tag,{y,1},{atom,kalle}}}},
      {{bad_catch_try,bad_4,1},
-      {{'try',{x,0},{f,15}},5,{invalid_store,{x,0},{trytag,[15]}}}},
+      {{'try',{x,0},{f,15}},5,{invalid_tag_register,{x,0}}}},
      {{bad_catch_try,bad_5,1},
-      {{try_case,{y,1}},12,{bad_type,term}}},
+      {{try_case,{y,1}},12,{invalid_tag,{y,1},term}}},
      {{bad_catch_try,bad_6,1},
       {{move,{integer,1},{y,1}},7,
-       {invalid_store,{y,1},{integer,1}}}}] = Errors,
+       {invalid_store,{y,1}}}}] = Errors,
     ok.
 
 cons_guard(Config) when is_list(Config) ->
@@ -247,7 +248,7 @@ freg_range(Config) when is_list(Config) ->
      {{t,sum_3,2},
       {{bif,fadd,{f,0},[{fr,0},{fr,1}],{fr,-1}},
        7,
-       {bad_target,{fr,-1}}}},
+       {bad_register,{fr,-1}}}},
      {{t,sum_4,2},
       {{bif,fadd,{f,0},[{fr,0},{fr,1}],{fr,1024}},
        7,
@@ -539,37 +540,37 @@ receive_stacked(Config) ->
     [{{receive_stacked,f1,0},
       {{loop_rec_end,{f,3}},
        17,
-       {fragile_message_reference,{y,0}}}},
+       {fragile_message_reference,{y,_}}}},
      {{receive_stacked,f2,0},
-      {{test_heap,3,0},10,{fragile_message_reference,{y,1}}}},
+      {{test_heap,3,0},10,{fragile_message_reference,{y,_}}}},
      {{receive_stacked,f3,0},
-      {{test_heap,3,0},10,{fragile_message_reference,{y,1}}}},
+      {{test_heap,3,0},10,{fragile_message_reference,{y,_}}}},
      {{receive_stacked,f4,0},
-      {{test_heap,3,0},10,{fragile_message_reference,{y,1}}}},
+      {{test_heap,3,0},10,{fragile_message_reference,{y,_}}}},
      {{receive_stacked,f5,0},
       {{loop_rec_end,{f,23}},
        23,
-       {fragile_message_reference,{y,1}}}},
+       {fragile_message_reference,{y,_}}}},
      {{receive_stacked,f6,0},
-      {{gc_bif,byte_size,{f,29},0,[{y,0}],{x,0}},
+      {{gc_bif,byte_size,{f,29},0,[{y,_}],{x,0}},
        12,
-       {fragile_message_reference,{y,0}}}},
+       {fragile_message_reference,{y,_}}}},
      {{receive_stacked,f7,0},
       {{loop_rec_end,{f,33}},
        20,
-       {fragile_message_reference,{y,0}}}},
+       {fragile_message_reference,{y,_}}}},
      {{receive_stacked,f8,0},
       {{loop_rec_end,{f,38}},
        20,
-       {fragile_message_reference,{y,0}}}},
+       {fragile_message_reference,{y,_}}}},
      {{receive_stacked,m1,0},
       {{loop_rec_end,{f,43}},
        19,
-       {fragile_message_reference,{y,0}}}},
+       {fragile_message_reference,{y,_}}}},
      {{receive_stacked,m2,0},
       {{loop_rec_end,{f,48}},
        33,
-       {fragile_message_reference,{y,0}}}}] = Errors,
+       {fragile_message_reference,{y,_}}}}] = Errors,
 
     %% Compile the original source code as a smoke test.
     Data = proplists:get_value(data_dir, Config),
@@ -579,6 +580,105 @@ receive_stacked(Config) ->
 
     ok.
 
+aliased_types(Config) ->
+    Seq = lists:seq(1, 5),
+    1 = aliased_types_1(Seq, Config),
+
+    {1,1} = aliased_types_2(Seq),
+    {42,none} = aliased_types_2([]),
+
+    gurka = aliased_types_3([gurka]),
+    gaffel = aliased_types_3([gaffel]),
+
+    ok.
+
+%% ERL-735: validator failed to track types on aliased registers, rejecting
+%% legitimate optimizations.
+%%
+%%    move x0 y0
+%%    bif hd L1 x0
+%%    get_hd y0     %% The validator failed to see that y0 was a list
+%%
+aliased_types_1(Bug, Config) ->
+    if
+        Config =/= [gurka, gaffel] -> %% Pointless branch.
+            _ = hd(Bug),
+            lists:seq(1, 5),
+            hd(Bug)
+    end.
+
+%% ERL-832: validator failed to realize that a Y register was a cons.
+aliased_types_2(Bug) ->
+    Res = case Bug of
+              [] -> id(42);
+              _ -> hd(Bug)
+          end,
+    {Res,case Bug of
+             [] -> none;
+             _ -> hd(Bug)
+         end}.
+
+%% ERL-832 part deux; validator failed to realize that an aliased register was
+%% a cons.
+aliased_types_3(Bug) ->
+    List = [Y || Y <- Bug],
+    case List of
+        [] -> Bug;
+        _ ->
+            if
+                hd(List) -> a:a();
+                true -> ok
+            end,
+            hd(List)
+    end.
+
+
+%% ERL-867; validation proceeded after a type conflict, causing incorrect types
+%% to be joined.
+
+-record(r, { e1 = e1, e2 = e2 }).
+
+type_conflict(Config) when is_list(Config) ->
+    {e1, e2} = type_conflict_1(#r{}),
+    ok.
+
+type_conflict_1(C) ->
+    Src = id(C#r.e2),
+    TRes = try id(Src) of
+               R -> R
+           catch
+               %% C:R can never match, yet it assumed that the type of 'C' was
+               %% an atom from here on.
+               C:R -> R
+           end,
+    {C#r.e1, TRes}.
+
+%% ERL-886; validation failed to infer types on both sides of '=:='
+
+infer_on_eq(Config) when is_list(Config) ->
+    {ok, gurka} = infer_on_eq_1(id({gurka})),
+    {ok, gaffel} = infer_on_eq_2(id({gaffel})),
+    {ok, elefant} = infer_on_eq_3(id({elefant})),
+    {ok, myra} = infer_on_eq_4(id({myra})),
+    ok.
+
+infer_on_eq_1(T) ->
+    1 = erlang:tuple_size(T),
+    {ok, erlang:element(1, T)}.
+
+infer_on_eq_2(T) ->
+    Size = erlang:tuple_size(T),
+    Size = 1,
+    {ok, erlang:element(1, T)}.
+
+infer_on_eq_3(T) ->
+    true = 1 =:= erlang:tuple_size(T),
+    {ok, erlang:element(1, T)}.
+
+infer_on_eq_4(T) ->
+    true = erlang:tuple_size(T) =:= 1,
+    {ok, erlang:element(1, T)}.
+
 %%%-------------------------------------------------------------------------
 
 transform_remove(Remove, Module) ->
@@ -637,3 +737,6 @@ night(Turned) ->
     ok.
 
 participating(_, _, _, _) -> ok.
+
+id(I) ->
+    I.
diff --git a/lib/compiler/test/beam_validator_SUITE_data/bad_bin_match.S b/lib/compiler/test/beam_validator_SUITE_data/bad_bin_match.S
index a60ca1e89a..c7610971f1 100644
--- a/lib/compiler/test/beam_validator_SUITE_data/bad_bin_match.S
+++ b/lib/compiler/test/beam_validator_SUITE_data/bad_bin_match.S
@@ -11,5 +11,5 @@
   {label,1}.
     {func_info,{atom,t},{atom,t},1}.
   {label,2}.
-    {test,bs_start_match2,{f,1},1,[{x,0},0],{x,0}}.
+    {test,bs_start_match3,{f,1},1,[{x,0}],{x,0}}.
     return.
diff --git a/lib/compiler/test/beam_validator_SUITE_data/merge_undefined.S b/lib/compiler/test/beam_validator_SUITE_data/merge_undefined.S
index 481d55045d..aa344807e4 100644
--- a/lib/compiler/test/beam_validator_SUITE_data/merge_undefined.S
+++ b/lib/compiler/test/beam_validator_SUITE_data/merge_undefined.S
@@ -15,8 +15,9 @@
     {select_val,{x,0},{f,1},{list,[{atom,gurka},{f,3},{atom,delete},{f,4}]}}.
   {label,3}.
     {allocate_heap,2,6,2}.
-    %% The Y registers are not initialized here.
     {test,is_eq_exact,{f,5},[{x,0},{atom,ok}]}.
+    %% This is unreachable since {x,0} is known not to be 'ok'. We should not
+    %% fail with "uninitialized y registers" on erlang:exit/1
     {move,{atom,nisse},{x,0}}.
     {call_ext,1,{extfunc,erlang,exit,1}}.
   {label,4}.
@@ -29,6 +30,7 @@
     {call_ext,2,{extfunc,io,format,2}}.
     {test,is_ne_exact,{f,6},[{x,0},{atom,ok}]}.
   {label,5}.
+    %% The Y registers are not initialized here.
     {move,{atom,logReader},{x,1}}.
     {move,{atom,console},{x,0}}.
     {call_ext,2,{extfunc,debug,filter,2}}.
diff --git a/lib/compiler/test/beam_validator_SUITE_data/receive_stacked.S b/lib/compiler/test/beam_validator_SUITE_data/receive_stacked.S
index cca052a9c4..a878204d16 100644
--- a/lib/compiler/test/beam_validator_SUITE_data/receive_stacked.S
+++ b/lib/compiler/test/beam_validator_SUITE_data/receive_stacked.S
@@ -172,7 +172,7 @@
     {allocate_zero,1,0}.
   {label,28}.
     {loop_rec,{f,30},{x,0}}.
-    {test,bs_start_match2,{f,29},1,[{x,0},0],{x,0}}.
+    {test,bs_start_match3,{f,29},1,[{x,0}],{x,0}}.
     {test,bs_get_integer2,
           {f,29},
           1,
@@ -219,7 +219,7 @@
     {allocate_zero,1,0}.
   {label,33}.
     {loop_rec,{f,35},{x,0}}.
-    {test,bs_start_match2,{f,34},1,[{x,0},0],{x,0}}.
+    {test,bs_start_match3,{f,34},1,[{x,0}],{x,0}}.
     {test,bs_get_integer2,
           {f,34},
           1,
@@ -240,7 +240,7 @@
           {y,0}}.
     {'%',{no_bin_opt,{binary_used_in,{test,is_binary,{f,34},[{y,0}]}},
                      [63,{file,"receive_stacked.erl"}]}}.
-    {test,is_binary,{f,34},[{y,0}]}.
+    {test,is_eq_exact,{f,34},[{y,0},{literal,<<0,1,2,3>>}]}.
     remove_message.
     {move,{integer,42},{x,0}}.
     {line,[{location,"receive_stacked.erl",64}]}.
@@ -262,7 +262,7 @@
     {allocate_zero,1,0}.
   {label,38}.
     {loop_rec,{f,40},{x,0}}.
-    {test,bs_start_match2,{f,39},1,[{x,0},0],{x,1}}.
+    {test,bs_start_match3,{f,39},1,[{x,0}],{x,1}}.
     {test,bs_get_integer2,
           {f,39},
           2,
@@ -283,7 +283,7 @@
           {y,0}}.
     {'%',{no_bin_opt,{[{x,1},{y,0}],{loop_rec_end,{f,38}},not_handled},
                      [70,{file,"receive_stacked.erl"}]}}.
-    {test,is_binary,{f,39},[{x,0}]}.
+    {test,is_eq_exact,{f,39},[{x,0},{literal,<<0,1,2,3>>}]}.
     remove_message.
     {move,{integer,42},{x,0}}.
     {line,[{location,"receive_stacked.erl",71}]}.
diff --git a/lib/compiler/test/bif_SUITE.erl b/lib/compiler/test/bif_SUITE.erl
index 42ba5d5365..423a7666af 100644
--- a/lib/compiler/test/bif_SUITE.erl
+++ b/lib/compiler/test/bif_SUITE.erl
@@ -23,7 +23,7 @@
 
 -export([all/0,suite/0,groups/0,init_per_suite/1,end_per_suite/1,
 	 init_per_group/2,end_per_group/2,
-	 beam_validator/1,trunc_and_friends/1,cover_safe_bifs/1]).
+	 beam_validator/1,trunc_and_friends/1,cover_safe_and_pure_bifs/1]).
 
 suite() ->
     [{ct_hooks,[ts_install_cth]}].
@@ -35,7 +35,7 @@ groups() ->
     [{p,[parallel],
       [beam_validator,
        trunc_and_friends,
-       cover_safe_bifs
+       cover_safe_and_pure_bifs
       ]}].
 
 init_per_suite(Config) ->
@@ -106,7 +106,7 @@ trunc_template(Func, Bif) ->
         catch error:badarg -> ok end,
         ok.").
 
-cover_safe_bifs(Config) ->
+cover_safe_and_pure_bifs(Config) ->
     _ = get(),
     _ = get_keys(a),
     _ = group_leader(),
@@ -118,5 +118,6 @@ cover_safe_bifs(Config) ->
     _ = processes(),
     _ = registered(),
     _ = term_to_binary(Config),
+    42 = list_to_integer("2A", 16),
 
     ok.
diff --git a/lib/compiler/test/bs_construct_SUITE.erl b/lib/compiler/test/bs_construct_SUITE.erl
index ccc49df005..bccd70d6cb 100644
--- a/lib/compiler/test/bs_construct_SUITE.erl
+++ b/lib/compiler/test/bs_construct_SUITE.erl
@@ -27,6 +27,7 @@
 -export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1, 
 	 init_per_group/2,end_per_group/2,
 	 init_per_testcase/2,end_per_testcase/2,
+         verify_highest_opcode/1,
 	 two/1,test1/1,fail/1,float_bin/1,in_guard/1,in_catch/1,
 	 nasty_literals/1,coerce_to_float/1,side_effect/1,
 	 opt/1,otp_7556/1,float_arith/1,otp_8054/1,
@@ -43,7 +44,8 @@ all() ->
 
 groups() ->
     [{p,[parallel],
-      [two,test1,fail,float_bin,in_guard,in_catch,
+      [verify_highest_opcode,
+       two,test1,fail,float_bin,in_guard,in_catch,
        nasty_literals,side_effect,opt,otp_7556,float_arith,
        otp_8054,cover]}].
 
@@ -68,6 +70,20 @@ init_per_testcase(Case, Config) when is_atom(Case), is_list(Config) ->
 end_per_testcase(Case, Config) when is_atom(Case), is_list(Config) ->
     ok.
 
+verify_highest_opcode(_Config) ->
+    case ?MODULE of
+        bs_construct_r21_SUITE ->
+            {ok,Beam} = file:read_file(code:which(?MODULE)),
+            case test_lib:highest_opcode(Beam) of
+                Highest when Highest =< 163 ->
+                    ok;
+                TooHigh ->
+                    ct:fail({too_high_opcode_for_21,TooHigh})
+            end;
+        _ ->
+            ok
+    end.
+
 two(Config) when is_list(Config) ->
     <<0,1,2,3,4,6,7,8,9>> = two_1([0], [<<1,2,3,4>>,<<6,7,8,9>>]),
     ok.
@@ -153,6 +169,8 @@ l(I_13, I_big1, I_16, Bin) ->
 	[0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0,
 	 16#77,16#FF,16#FF,16#FF,16#FF,16#FF,16#FF,16#FF,16#FF,16#FF,16#FF,
 	 16#FF,16#FF,16#FF,16#FF,16#FF,16#FF]),
+     ?T(<< (<<"abc",7:3>>):3/binary >>,
+        [$a,$b,$c]),
 
      %% Mix different units.
      ?T(<<37558955:(I_16-12)/unit:8,1:1>>,
@@ -311,6 +329,9 @@ fail(Config) when is_list(Config) ->
     {'EXIT',{badarg,_}} = (catch <<0:(-(1 bsl 100))>>),
     {'EXIT',{badarg,_}} = (catch <<Bin/binary,0:(-(1 bsl 100))>>),
 
+    %% Unaligned sizes with literal binaries.
+    {'EXIT',{badarg,_}} = (catch <<0,(<<7777:17>>)/binary>>),
+
     ok.
 
 float_bin(Config) when is_list(Config) ->
diff --git a/lib/compiler/test/bs_match_SUITE.erl b/lib/compiler/test/bs_match_SUITE.erl
index a751f6fda5..41e4918b1e 100644
--- a/lib/compiler/test/bs_match_SUITE.erl
+++ b/lib/compiler/test/bs_match_SUITE.erl
@@ -24,6 +24,7 @@
 -export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1, 
 	 init_per_group/2,end_per_group/2,
 	 init_per_testcase/2,end_per_testcase/2,
+         verify_highest_opcode/1,
 	 size_shadow/1,int_float/1,otp_5269/1,null_fields/1,wiger/1,
 	 bin_tail/1,save_restore/1,
 	 partitioned_bs_match/1,function_clause/1,
@@ -40,8 +41,10 @@
 	 map_and_binary/1,unsafe_branch_caching/1,
 	 bad_literals/1,good_literals/1,constant_propagation/1,
 	 parse_xml/1,get_payload/1,escape/1,num_slots_different/1,
-         beam_bsm/1,guard/1,is_ascii/1,non_opt_eq/1,erl_689/1,
-         bs_start_match2_defs/1]).
+         beam_bsm/1,guard/1,is_ascii/1,non_opt_eq/1,
+         expression_before_match/1,erl_689/1,restore_on_call/1,
+         restore_after_catch/1,matches_on_parameter/1,big_positions/1,
+         matching_meets_apply/1,bs_start_match2_defs/1]).
 
 -export([coverage_id/1,coverage_external_ignore/2]).
 
@@ -57,8 +60,9 @@ all() ->
     [{group,p}].
 
 groups() -> 
-    [{p,[parallel],
-      [size_shadow,int_float,otp_5269,null_fields,wiger,
+    [{p,[],
+      [verify_highest_opcode,
+       size_shadow,int_float,otp_5269,null_fields,wiger,
        bin_tail,save_restore,
        partitioned_bs_match,function_clause,unit,
        shared_sub_bins,bin_and_float,dec_subidentifiers,
@@ -73,8 +77,10 @@ groups() ->
        map_and_binary,unsafe_branch_caching,
        bad_literals,good_literals,constant_propagation,parse_xml,
        get_payload,escape,num_slots_different,
-       beam_bsm,guard,is_ascii,non_opt_eq,erl_689,
-       bs_start_match2_defs]}].
+       beam_bsm,guard,is_ascii,non_opt_eq,
+       expression_before_match,erl_689,restore_on_call,
+       matches_on_parameter,big_positions,
+       matching_meets_apply,bs_start_match2_defs]}].
 
 
 init_per_suite(Config) ->
@@ -97,6 +103,20 @@ init_per_testcase(Case, Config) when is_atom(Case), is_list(Config) ->
 end_per_testcase(Case, Config) when is_atom(Case), is_list(Config) ->
     ok.
 
+verify_highest_opcode(_Config) ->
+    case ?MODULE of
+        bs_match_r21_SUITE ->
+            {ok,Beam} = file:read_file(code:which(?MODULE)),
+            case test_lib:highest_opcode(Beam) of
+                Highest when Highest =< 163 ->
+                    ok;
+                TooHigh ->
+                    ct:fail({too_high_opcode_for_21,TooHigh})
+            end;
+        _ ->
+            ok
+    end.
+
 size_shadow(Config) when is_list(Config) ->
     %% Originally OTP-5270.
     7 = size_shadow_1(),
@@ -250,6 +270,12 @@ bin_tail(Config) when is_list(Config) ->
     ok = bin_tail_e(<<2:2,1:1,1:5,42:64>>),
     error = bin_tail_e(<<3:2,1:1,1:5,42:64>>),
     error = bin_tail_e(<<>>),
+
+    MD5 = erlang:md5(<<42>>),
+    <<"abc">> = bin_tail_f(<<MD5/binary,"abc">>, MD5, 3),
+    error = bin_tail_f(<<MD5/binary,"abc">>, MD5, 999),
+    {'EXIT',{_,_}} = (catch bin_tail_f(<<0:16/unit:8>>, MD5, 0)),
+
     ok.
 
 bin_tail_c(Bin, Offset) ->
@@ -306,6 +332,14 @@ bin_tail_e_var(Bin) ->
 	<<2:2,_:1,1:5,Tail/binary>> -> Tail;
 	_ -> error
     end.
+
+bin_tail_f(Bin, MD5, Size) ->
+    case Bin of
+        <<MD5:16/binary, Tail:Size/binary>> ->
+            Tail;
+        <<MD5:16/binary, _/binary>> ->
+            error
+    end.
 	    
 save_restore(Config) when is_list(Config) ->
     0 = save_restore_1(<<0:2,42:6>>),
@@ -457,6 +491,15 @@ unit(Config) when is_list(Config) ->
     127 = peek7(<<127:7>>),
     100 = peek7(<<100:7,19:7>>),
     fc(peek7, [<<1,2>>], catch peek7(<<1,2>>)),
+
+    1 = unit_opt(1, -1),
+    8 = unit_opt(8, -1),
+
+    <<1:32,"abc">> = unit_opt_2(<<1:32,"abc">>),
+    <<"def">> = unit_opt_2(<<2:32,"def">>),
+    {'EXIT',_} = (catch unit_opt_2(<<1:32,33:7>>)),
+    {'EXIT',_} = (catch unit_opt_2(<<2:32,55:7>>)),
+
     ok.
 
 peek1(<<B:8,_/bitstring>>) -> B.
@@ -467,6 +510,27 @@ peek8(<<B:8,_/binary>>) -> B.
 
 peek16(<<B:16,_/binary-unit:16>>) -> B.
 
+unit_opt(U, X) ->
+    %% Cover type analysis in beam_ssa_type.
+    Bin = case U of
+              1 -> <<X:7>>;
+              8 -> <<X>>
+          end,
+    %% The type of Bin will be set to {binary,gcd(1, 8)}.
+    case Bin of
+        <<_/binary-unit:8>> -> 8;
+        <<_/binary-unit:1>> -> 1
+    end.
+
+unit_opt_2(<<St:32,KO/binary>> = Bin0) ->
+    Bin = if
+              St =:= 1 ->
+                  Bin0;
+              St =:= 2 ->
+                  <<KO/binary>>
+          end,
+    id(Bin).
+
 shared_sub_bins(Config) when is_list(Config) ->
     {15,[<<>>,<<5>>,<<4,5>>,<<3,4,5>>,<<2,3,4,5>>]} = sum(<<1,2,3,4,5>>, [], 0),
     ok.
@@ -694,6 +758,20 @@ coverage(Config) when is_list(Config) ->
     binary = coverage_bitstring(<<7>>),
     bitstring = coverage_bitstring(<<7:4>>),
     other = coverage_bitstring([a]),
+
+    %% Cover code in beam_trim.
+
+    {done,<<17,53>>,[253,155,200]} =
+        coverage_trim(<<253,155,200,17,53>>, e0, e1, e2, e3, []),
+
+    <<"(right|linux)">> = coverage_trim_1(<<"">>, <<"right">>, <<"linux">>),
+    <<"/(right|linux)">> = coverage_trim_1(<<"/">>, <<"right">>, <<"linux">>),
+    <<"(left|linux)/(right|linux)">> =
+        coverage_trim_1(<<"left">>, <<"right">>, <<"linux">>),
+
+    {10,<<"-">>,""} = coverage_trim_2(<<"-">>, 10, []),
+    {8,<<"-">>,"aa"} = coverage_trim_2(<<"aa-">>, 10, []),
+
     ok.
 
 coverage_fold(Fun, Acc, <<H,T/binary>>) ->
@@ -788,6 +866,37 @@ coverage_bitstring(Bin) when is_binary(Bin) -> binary;
 coverage_bitstring(<<_/bitstring>>) -> bitstring;
 coverage_bitstring(_) -> other.
 
+coverage_trim(<<C:8,T/binary>> = Bin, E0, E1, E2, E3, Acc) ->
+    case id(C > 128) of
+        true ->
+            coverage_trim(T, E0, E1, E2, E3, [C|Acc]);
+        false ->
+            {done,Bin,lists:reverse(Acc)}
+    end.
+
+coverage_trim_1(<<>>, Right, OsType) ->
+    do_coverage_trim_1(Right, OsType);
+coverage_trim_1(<<"/">>, Right, OsType) ->
+    <<"/",(do_coverage_trim_1(Right, OsType))/binary>>;
+coverage_trim_1(Left, Right, OsType) ->
+    <<(do_coverage_trim_1(Left, OsType))/binary,
+      "/",
+      (do_coverage_trim_1(Right, OsType))/binary>>.
+
+do_coverage_trim_1(A, OsType) ->
+    <<"(",A/binary,"|",OsType/binary,")">>.
+
+coverage_trim_2(<<C/utf8,R/binary>> = Bin, I, L) ->
+    case printable_char(C) of
+        true ->
+            coverage_trim_2(R, I - 1, [C | L]);
+        false ->
+            {I,Bin,lists:reverse(L)}
+    end.
+
+printable_char($a) -> true;
+printable_char(_) -> false.
+
 multiple_uses(Config) when is_list(Config) ->
     {344,62879,345,<<245,159,1,89>>} = multiple_uses_1(<<1,88,245,159,1,89>>),
     true = multiple_uses_2(<<0,0,197,18>>),
@@ -1754,11 +1863,10 @@ do_erl_689_2b(_, <<Length, Data/binary>>) ->
 %% ERL-753
 
 bs_start_match2_defs(_Config) ->
-    {<<"http://127.0.0.1:1234/vsaas/hello">>} = api_url(<<"hello">>, dummy),
-    {"https://127.0.0.1:4321/vsaas/hello"} = api_url({https, "hello"}, dummy).
+    {<<"http://127.0.0.1:1234/vsaas/hello">>} = api_url(<<"hello">>),
+    {"https://127.0.0.1:4321/vsaas/hello"} = api_url({https, "hello"}).
 
-api_url(URL, Auth) ->
-    Header = [],
+api_url(URL) ->
     case URL of
         <<_/binary>> -> {<<"http://127.0.0.1:1234/vsaas/",URL/binary>>};
         {https, [_|_] = URL1} -> {"https://127.0.0.1:4321/vsaas/"++URL1}
@@ -1767,4 +1875,113 @@ api_url(URL, Auth) ->
 check(F, R) ->
     R = F().
 
+%% Make sure that an expression that comes between function start and a match
+%% expression passes validation.
+expression_before_match(Config) when is_list(Config) ->
+    <<_,R/binary>> = id(<<0,1,2,3>>),
+    {1, <<2,3>>} = expression_before_match_1(R),
+    ok.
+
+expression_before_match_1(R) ->
+    A = id(1),
+    case R of
+        <<1,Bar/binary>> -> {A, Bar};
+        <<>> -> {A, baz}
+    end.
+
+%% Make sure that context positions are updated on calls.
+restore_on_call(Config) when is_list(Config) ->
+    ok = restore_on_call_1(<<0, 1, 2>>).
+
+restore_on_call_1(<<0, Rest/binary>>) ->
+    <<2>> = restore_on_call_2(Rest),
+    <<2>> = restore_on_call_2(Rest), %% {badmatch, <<>>} on missing restore.
+    ok.
+
+restore_on_call_2(<<1, Rest/binary>>) -> Rest;
+restore_on_call_2(Other) -> Other.
+
+%% 'catch' must invalidate positions.
+restore_after_catch(Config) when is_list(Config) ->
+    <<0, 1>> = restore_after_catch_1(<<0, 1>>),
+    ok.
+
+restore_after_catch_1(<<A/binary>>) ->
+    try throw_after_byte(A) of
+        _ -> impossible
+    catch
+        throw:_Any ->
+            %% Will equal <<1>> if the bug is present.
+            A
+    end.
+
+throw_after_byte(<<_,_/binary>>) ->
+    throw(away).
+
+matches_on_parameter(Config) when is_list(Config) ->
+    %% This improves coverage for matching on "naked" parameters.
+    {<<"urka">>, <<"a">>} = matches_on_parameter_1(<<"gurka">>),
+    ok = (catch matches_on_parameter_2(<<"10001110101">>, 0)).
+
+matches_on_parameter_1(Bin) ->
+    <<"g", A/binary>> = Bin,
+    <<_,_,"rk", B/binary>> = Bin,
+    {A, B}.
+
+matches_on_parameter_2(Bin, Offset) ->
+    <<_:Offset, Bit:1, Rest/bits>> = Bin,
+    case bit_size(Rest) of
+        0 -> throw(ok);
+        _ -> [Bit | matches_on_parameter_2(Bin, Offset + 1)]
+    end.
+
+big_positions(Config) when is_list(Config) ->
+    %% This provides coverage for when match context positions no longer fit
+    %% into an immediate on 32-bit platforms.
+
+    A = <<0:((1 bsl 27) - 8), $A, 1:1, "gurka", $A>>,
+    B = <<0:((1 bsl 27) - 8), $B, "hello", $B>>,
+
+    {a,$A} = bp_start_match(A),
+    {b,$B} = bp_start_match(B),
+    {a,$A} = bp_getpos(A),
+    {b,$B} = bp_getpos(B),
+
+    ok.
+
+%% After the first iteration the context's position will no longer fit into an
+%% immediate. To improve performance the bs_start_match3 instruction will
+%% return a new context with an updated base position so that we won't have to
+%% resort to using bigints.
+bp_start_match(<<_:(1 bsl 27),T/bits>>) -> bp_start_match(T);
+bp_start_match(<<1:1,"gurka",A>>) -> {a,A};
+bp_start_match(<<"hello",B>>) -> {b,B}.
+
+%% This is a corner case where the above didn't work perfectly; if the position
+%% was _just_ small enough to fit into an immediate when bs_start_match3 was
+%% hit, but too large at bs_get_position, then it must be saved as a bigint.
+bp_getpos(<<_:((1 bsl 27) - 8),T/bits>>) -> bp_getpos(T);
+bp_getpos(<<A,1:1,"gurka",A>>) -> {a,A};
+bp_getpos(<<B,"hello",B>>) -> {b,B}.
+
+matching_meets_apply(_Config) ->
+    <<"abc">> = do_matching_meets_apply(<<"/abc">>, []),
+    42 = do_matching_meets_apply(<<"">>, {erlang,-42}),
+    100 = do_matching_meets_apply(no_binary, {erlang,-100}),
+    ok.
+
+do_matching_meets_apply(<<$/, Rest/binary>>, _Handler) ->
+    id(Rest);
+do_matching_meets_apply(<<_/binary>>=Name, never_matches_a) ->
+    %% Used to crash the compiler because variables in a remote
+    %% were not handled properly by beam_ssa_bsm.
+    Name:foo(gurka);
+do_matching_meets_apply(<<_/binary>>=Name, never_matches_b) ->
+    %% Another case of the above.
+    foo:Name(gurka);
+do_matching_meets_apply(_Bin, {Handler, State}) ->
+    %% Another case of the above.
+    Handler:abs(State).
+
+
 id(I) -> I.
diff --git a/lib/compiler/test/compilation_SUITE.erl b/lib/compiler/test/compilation_SUITE.erl
index 139f7af0d4..74f9dbd9b4 100644
--- a/lib/compiler/test/compilation_SUITE.erl
+++ b/lib/compiler/test/compilation_SUITE.erl
@@ -170,7 +170,7 @@ try_it(Module, Conf) ->
 			atom_to_list(Module)),
     Out = proplists:get_value(priv_dir,Conf),
     io:format("Compiling: ~s\n", [Src]),
-    CompRc0 = compile:file(Src, [clint0,clint,{outdir,Out},report,
+    CompRc0 = compile:file(Src, [clint0,clint,ssalint,{outdir,Out},report,
 				 bin_opt_info|OtherOpts]),
     io:format("Result: ~p\n",[CompRc0]),
     {ok,_Mod} = CompRc0,
@@ -189,7 +189,7 @@ try_it(Module, Conf) ->
 
     ct:timetrap(Timetrap),
     io:format("Compiling (with old inliner): ~s\n", [Src]),
-    CompRc2 = compile:file(Src, [clint,
+    CompRc2 = compile:file(Src, [clint,ssalint,
 				 {outdir,Out},report,bin_opt_info,
 				 {inline,1000}|OtherOpts]),
     io:format("Result: ~p\n",[CompRc2]),
@@ -355,7 +355,7 @@ compile_compiler(Files, OutDir, Version, InlineOpts) ->
     io:format("~ts", [code:which(compile)]),
     io:format("Compiling ~s into ~ts", [Version,OutDir]),
     Opts = [report,
-	    clint0,clint,
+	    clint0,clint,ssalint,
 	    bin_opt_info,
 	    {outdir,OutDir},
 	    {d,'COMPILER_VSN',"\""++Version++"\""},
diff --git a/lib/compiler/test/compile_SUITE.erl b/lib/compiler/test/compile_SUITE.erl
index 6b230710b3..53627b9d81 100644
--- a/lib/compiler/test/compile_SUITE.erl
+++ b/lib/compiler/test/compile_SUITE.erl
@@ -28,12 +28,12 @@
 	 init_per_group/2,end_per_group/2,
 	 app_test/1,appup_test/1,
 	 debug_info/4, custom_debug_info/1, custom_compile_info/1,
-	 file_1/1, forms_2/1, module_mismatch/1, big_file/1, outdir/1,
+	 file_1/1, forms_2/1, module_mismatch/1, outdir/1,
 	 binary/1, makedep/1, cond_and_ifdef/1, listings/1, listings_big/1,
 	 other_output/1, kernel_listing/1, encrypted_abstr/1,
 	 strict_record/1, utf8_atoms/1, utf8_functions/1, extra_chunks/1,
 	 cover/1, env/1, core_pp/1, tuple_calls/1,
-	 core_roundtrip/1, asm/1, optimized_guards/1,
+	 core_roundtrip/1, asm/1,
 	 sys_pre_attributes/1, dialyzer/1,
 	 warnings/1, pre_load_check/1, env_compiler_options/1,
          bc_options/1, deterministic_include/1, deterministic_paths/1
@@ -46,11 +46,11 @@ suite() -> [{ct_hooks,[ts_install_cth]}].
 -spec all() -> all_return_type().
 
 all() -> 
-    [app_test, appup_test, file_1, forms_2, module_mismatch, big_file, outdir,
+    [app_test, appup_test, file_1, forms_2, module_mismatch, outdir,
      binary, makedep, cond_and_ifdef, listings, listings_big,
      other_output, kernel_listing, encrypted_abstr, tuple_calls,
      strict_record, utf8_atoms, utf8_functions, extra_chunks,
-     cover, env, core_pp, core_roundtrip, asm, optimized_guards,
+     cover, env, core_pp, core_roundtrip, asm,
      sys_pre_attributes, dialyzer, warnings, pre_load_check,
      env_compiler_options, custom_debug_info, bc_options,
      custom_compile_info, deterministic_include, deterministic_paths].
@@ -104,6 +104,7 @@ file_1(Config) when is_list(Config) ->
     compile_and_verify(Simple, Target, []),
     compile_and_verify(Simple, Target, [native]),
     compile_and_verify(Simple, Target, [debug_info]),
+    compile_and_verify(Simple, Target, [no_postopt]),
     {ok,simple} = compile:file(Simple, [no_line_info]), %Coverage
 
     {ok,simple} = compile:file(Simple, [{eprof,beam_z}]), %Coverage
@@ -231,17 +232,6 @@ module_mismatch(Config) when is_list(Config) ->
 
     ok.
 
-big_file(Config) when is_list(Config) ->
-    {Big,Target} = get_files(Config, big, "big_file"),
-    ok = file:set_cwd(filename:dirname(Target)),
-    compile_and_verify(Big, Target, []),
-    compile_and_verify(Big, Target, [debug_info]),
-    compile_and_verify(Big, Target, [no_postopt]),
-
-    %% Cleanup.
-    ok = file:delete(Target),
-    ok.
-
 %% Tests that the {outdir, Dir} option works.
 
 outdir(Config) when is_list(Config) ->
@@ -370,41 +360,37 @@ do_file_listings(DataDir, PrivDir, [File|Files]) ->
     TargetDir = filename:join(PrivDir, listings),
     ok = file:make_dir(TargetDir),
 
-    %% Test all dedicated listing options.
-    do_listing(Simple, TargetDir, 'S'),
-    do_listing(Simple, TargetDir, 'E'),
-    do_listing(Simple, TargetDir, 'P'),
-    do_listing(Simple, TargetDir, dpp, ".pp"),
-    do_listing(Simple, TargetDir, dabstr, ".abstr"),
-    do_listing(Simple, TargetDir, dexp, ".expand"),
-    do_listing(Simple, TargetDir, dcore, ".core"),
-    do_listing(Simple, TargetDir, doldinline, ".oldinline"),
-    do_listing(Simple, TargetDir, dinline, ".inline"),
-    do_listing(Simple, TargetDir, dcore, ".core"),
-    do_listing(Simple, TargetDir, dcopt, ".copt"),
-    do_listing(Simple, TargetDir, dcbsm, ".core_bsm"),
-    do_listing(Simple, TargetDir, dsetel, ".dsetel"),
-    do_listing(Simple, TargetDir, dkern, ".kernel"),
-    do_listing(Simple, TargetDir, dcg, ".codegen"),
-    do_listing(Simple, TargetDir, dblk, ".block"),
-    do_listing(Simple, TargetDir, dexcept, ".except"),
-    do_listing(Simple, TargetDir, dbs, ".bs"),
-    do_listing(Simple, TargetDir, dtype, ".type"),
-    do_listing(Simple, TargetDir, ddead, ".dead"),
-    do_listing(Simple, TargetDir, djmp, ".jump"),
-    do_listing(Simple, TargetDir, dclean, ".clean"),
-    do_listing(Simple, TargetDir, dpeep, ".peep"),
-    do_listing(Simple, TargetDir, dopt, ".optimize"),
-
-    %% First clean up.
-    Listings = filename:join(PrivDir, listings),
-    lists:foreach(fun(F) -> ok = file:delete(F) end,
-	filelib:wildcard(filename:join(Listings, "*"))),
+    List = [{'S',".S"},
+            {'E',".E"},
+            {'P',".P"},
+            {dpp, ".pp"},
+            {dabstr, ".abstr"},
+            {dexp, ".expand"},
+            {dcore, ".core"},
+            {doldinline, ".oldinline"},
+            {dinline, ".inline"},
+            {dcore, ".core"},
+            {dcopt, ".copt"},
+            {dcbsm, ".core_bsm"},
+            {dkern, ".kernel"},
+            {dssa, ".ssa"},
+            {dssaopt, ".ssaopt"},
+            {dprecg, ".precodegen"},
+            {dcg, ".codegen"},
+            {dblk, ".block"},
+            {dexcept, ".except"},
+            {djmp, ".jump"},
+            {dclean, ".clean"},
+            {dpeep, ".peep"},
+            {dopt, ".optimize"},
+            {diffable, ".S"}],
+    p_listings(List, Simple, TargetDir),
 
     %% Test options that produce a listing file if 'binary' is not given.
     do_listing(Simple, TargetDir, to_pp, ".P"),
     do_listing(Simple, TargetDir, to_exp, ".E"),
     do_listing(Simple, TargetDir, to_core0, ".core"),
+    Listings = filename:join(PrivDir, listings),
     ok = file:delete(filename:join(Listings, File ++ ".core")),
     do_listing(Simple, TargetDir, to_core, ".core"),
     do_listing(Simple, TargetDir, to_kernel, ".kernel"),
@@ -420,21 +406,35 @@ do_file_listings(DataDir, PrivDir, [File|Files]) ->
 listings_big(Config) when is_list(Config) ->
     {Big,Target} = get_files(Config, big, listings_big),
     TargetDir = filename:dirname(Target),
-    do_listing(Big, TargetDir, 'S'),
-    do_listing(Big, TargetDir, 'E'),
-    do_listing(Big, TargetDir, 'P'),
-    do_listing(Big, TargetDir, dkern, ".kernel"),
-    do_listing(Big, TargetDir, to_dis, ".dis"),
-
-    TargetNoext = filename:rootname(Target, code:objfile_extension()),
-    {ok,big} = compile:file(TargetNoext, [from_asm,{outdir,TargetDir}]),
-
-    %% Cleanup.
-    ok = file:delete(Target),
-    lists:foreach(fun(F) -> ok = file:delete(F) end,
-		  filelib:wildcard(filename:join(TargetDir, "*"))),
-    ok = file:del_dir(TargetDir),
-    ok.
+    List = [{'S',".S"},
+            {'E',".E"},
+            {'P',".P"},
+            {dkern, ".kernel"},
+            {dssa, ".ssa"},
+            {dssaopt, ".ssaopt"},
+            {dprecg, ".precodegen"},
+            {to_dis, ".dis"}],
+    p_listings(List, Big, TargetDir).
+
+p_listings(List, File, BaseDir) ->
+    Run = fun({Option,Extension}) ->
+                  Uniq = erlang:unique_integer([positive]),
+                  Dir = filename:join(BaseDir, integer_to_list(Uniq)),
+                  ok = file:make_dir(Dir),
+                  try
+                      do_listing(File, Dir, Option, Extension),
+                      ok
+                  catch
+                      Class:Error:Stk ->
+                          io:format("~p:~p\n~p\n", [Class,Error,Stk]),
+                          error
+                  after
+                      _ = [ok = file:delete(F) ||
+                              F <- filelib:wildcard(filename:join(Dir, "*"))],
+                      ok = file:del_dir(Dir)
+                  end
+          end,
+    test_lib:p_run(Run, List).
 
 other_output(Config) when is_list(Config) ->
     {Simple,_Target} = get_files(Config, simple, "other_output"),
@@ -681,9 +681,6 @@ cover(Config) when is_list(Config) ->
     io:format("~p\n", [compile:options()]),
     ok.
 
-do_listing(Source, TargetDir, Type) ->
-    do_listing(Source, TargetDir, Type, "." ++ atom_to_list(Type)).
-
 do_listing(Source, TargetDir, Type, Ext) ->
     io:format("Source: ~p TargetDir: ~p\n  Type: ~p Ext: ~p\n",
 	      [Source, TargetDir, Type, Ext]),
@@ -920,7 +917,7 @@ do_core_pp_1(M, A, Outdir) ->
     ok = file:delete(CoreFile),
 
     %% Compile as usual (including optimizations).
-    compile_forms(M, Core, [clint,from_core,binary]),
+    compile_forms(M, Core, [clint,ssalint,from_core,binary]),
 
     %% Don't optimize to test that we are not dependent
     %% on the Core Erlang optmimization passes.
@@ -929,7 +926,7 @@ do_core_pp_1(M, A, Outdir) ->
     %% records; if sys_core_fold was run it would fix
     %% that; if sys_core_fold was not run v3_kernel would
     %% crash.)
-    compile_forms(M, Core, [clint,from_core,no_copt,binary]),
+    compile_forms(M, Core, [clint,ssalint,from_core,no_copt,binary]),
 
     ok.
 
@@ -1170,95 +1167,6 @@ do_asm(Beam, Outdir) ->
 	    error
     end.
 
-%% Make sure that guards are fully optimized. Guards should
-%% should use 'test' instructions, not 'bif' instructions.
-
-optimized_guards(_Config) ->
-    TestBeams = get_unique_beam_files(),
-    test_lib:p_run(fun(F) -> do_opt_guards(F) end, TestBeams).
-
-do_opt_guards(Beam) ->
-    {ok,{M,[{abstract_code,{raw_abstract_v1,A}}]}} =
-	beam_lib:chunks(Beam, [abstract_code]),
-    try
-	{ok,M,Asm} = compile:forms(A, ['S']),
-	do_opt_guards_mod(Asm)
-    catch Class:Error:Stk ->
-	    io:format("~p: ~p ~p\n~p\n", [M,Class,Error,Stk]),
-	    error
-    end.
-
-do_opt_guards_mod({Mod,_Exp,_Attr,Asm,_NumLabels}) ->
-    case do_opt_guards_fs(Mod, Asm) of
-	[] ->
-	    ok;
-	[_|_]=Bifs ->
-	    io:format("ERRORS FOR ~p:\n~p\n", [Mod,Bifs]),
-	    error
-    end.
-
-do_opt_guards_fs(Mod, [{function,Name,Arity,_,Is}|Fs]) ->
-    Bifs0 = do_opt_guards_fun(Is),
-
-    %% The compiler does not attempt to optimize 'xor'.
-    %% Therefore, ignore all functions that use 'xor' in
-    %% a guard.
-    Bifs = case lists:any(fun({bif,'xor',_,_,_}) -> true;
-			     (_) -> false
-			  end, Bifs0) of
-	       true -> [];
-	       false -> Bifs0
-	   end,
-
-    %% Filter out the allowed exceptions.
-    FA = {Name,Arity},
-    case {Bifs,is_exception(Mod, FA)} of
-	{[_|_],true} ->
-	    io:format("~p:~p/~p IGNORED:\n~p\n",
-		      [Mod,Name,Arity,Bifs]),
-	    do_opt_guards_fs(Mod, Fs);
-	{[_|_],false} ->
-	    [{FA,Bifs}|do_opt_guards_fs(Mod, Fs)];
-	{[],false} ->
-	    do_opt_guards_fs(Mod, Fs);
-	{[],true} ->
-	    io:format("Redundant exception for ~p:~p/~p\n",
-		      [Mod,Name,Arity]),
-	    error(redundant)
-    end;
-do_opt_guards_fs(_, []) -> [].
-
-do_opt_guards_fun([{bif,Name,{f,F},As,_}=I|Is]) when F =/= 0 ->
-    Arity = length(As),
-    case erl_internal:comp_op(Name, Arity) orelse
-	erl_internal:bool_op(Name, Arity) orelse
-	erl_internal:new_type_test(Name, Arity) of
-	true ->
-	    [I|do_opt_guards_fun(Is)];
-	false ->
-	    do_opt_guards_fun(Is)
-    end;
-do_opt_guards_fun([_|Is]) ->
-    do_opt_guards_fun(Is);
-do_opt_guards_fun([]) -> [].
-
-is_exception(bs_match_SUITE, {matching_and_andalso_2,2}) -> true;
-is_exception(bs_match_SUITE, {matching_and_andalso_3,2}) -> true;
-is_exception(guard_SUITE, {'-complex_not/1-fun-4-',1}) -> true;
-is_exception(guard_SUITE, {'-complex_not/1-fun-5-',1}) -> true;
-is_exception(guard_SUITE, {basic_andalso_orelse,1}) -> true;
-is_exception(guard_SUITE, {bad_guards,1}) -> true;
-is_exception(guard_SUITE, {bad_guards_2,2}) -> true;
-is_exception(guard_SUITE, {bad_guards_3,2}) -> true;
-is_exception(guard_SUITE, {cqlc,4}) -> true;
-is_exception(guard_SUITE, {csemi7,3}) -> true;
-is_exception(guard_SUITE, {misc,1}) -> true;
-is_exception(guard_SUITE, {nested_not_2b,4}) -> true;
-is_exception(guard_SUITE, {tricky_1,2}) -> true;
-is_exception(map_SUITE, {map_guard_update,2}) -> true;
-is_exception(map_SUITE, {map_guard_update_variables,3}) -> true;
-is_exception(_, _) -> false.
-
 sys_pre_attributes(Config) ->
     DataDir = proplists:get_value(data_dir, Config),
     File = filename:join(DataDir, "attributes.erl"),
@@ -1475,44 +1383,55 @@ env_compiler_options(_Config) ->
 bc_options(Config) ->
     DataDir = proplists:get_value(data_dir, Config),
 
-    101 = highest_opcode(DataDir, small_float, [no_get_hd_tl,no_line_info]),
-
-    103 = highest_opcode(DataDir, big,
-                         [no_get_hd_tl,no_record_opt,
-                          no_line_info,no_stack_trimming]),
-
-    125 = highest_opcode(DataDir, small_float,
-                         [no_get_hd_tl,no_line_info,no_float_opt]),
-
-    132 = highest_opcode(DataDir, small,
-                         [no_get_hd_tl,no_record_opt,no_float_opt,no_line_info]),
-
-    136 = highest_opcode(DataDir, big, [no_get_hd_tl,no_record_opt,no_line_info]),
-
-    153 = highest_opcode(DataDir, big, [no_get_hd_tl,no_record_opt]),
-    153 = highest_opcode(DataDir, big, [r16]),
-    153 = highest_opcode(DataDir, big, [r17]),
-    153 = highest_opcode(DataDir, big, [r18]),
-    153 = highest_opcode(DataDir, big, [r19]),
-    153 = highest_opcode(DataDir, small_float, [r16]),
-    153 = highest_opcode(DataDir, small_float, []),
-
-    158 = highest_opcode(DataDir, small_maps, [r17]),
-    158 = highest_opcode(DataDir, small_maps, [r18]),
-    158 = highest_opcode(DataDir, small_maps, [r19]),
-    158 = highest_opcode(DataDir, small_maps, [r20]),
-    158 = highest_opcode(DataDir, small_maps, []),
-
-    163 = highest_opcode(DataDir, big, []),
-
+    L = [{101, small_float, [no_get_hd_tl,no_line_info]},
+         {103, big, [no_put_tuple2,no_get_hd_tl,no_ssa_opt_record,
+                     no_line_info,no_stack_trimming]},
+         {125, small_float, [no_get_hd_tl,no_line_info,no_ssa_opt_float]},
+
+         {132, small, [no_put_tuple2,no_get_hd_tl,no_ssa_opt_record,
+                       no_ssa_opt_float,no_line_info,no_bsm3]},
+
+         {153, small, [r20]},
+         {153, small, [r21]},
+
+         {136, big, [no_put_tuple2,no_get_hd_tl,
+                     no_ssa_opt_record,no_line_info]},
+
+         {153, big, [no_put_tuple2,no_get_hd_tl, no_ssa_opt_record]},
+         {153, big, [r16]},
+         {153, big, [r17]},
+         {153, big, [r18]},
+         {153, big, [r19]},
+         {153, small_float, [r16]},
+         {153, small_float, []},
+
+         {158, small_maps, [r17]},
+         {158, small_maps, [r18]},
+         {158, small_maps, [r19]},
+         {158, small_maps, [r20]},
+         {158, small_maps, [r21]},
+
+         {164, small_maps, []},
+         {164, big, []}
+        ],
+
+    Test = fun({Expected,Mod,Options}) ->
+                   case highest_opcode(DataDir, Mod, Options) of
+                       Expected ->
+                           ok;
+                       Got ->
+                           io:format("*** module ~p, options ~p => got ~p; expected ~p\n",
+                                     [Mod,Options,Got,Expected]),
+                           error
+                   end
+           end,
+    test_lib:p_run(Test, L),
     ok.
 
 highest_opcode(DataDir, Mod, Opt) ->
     Src = filename:join(DataDir, atom_to_list(Mod)++".erl"),
     {ok,Mod,Beam} = compile:file(Src, [binary|Opt]),
-    {ok,{Mod,[{"Code",Code}]}} = beam_lib:chunks(Beam, ["Code"]),
-    <<16:32,0:32,HighestOpcode:32,_/binary>> = Code,
-    HighestOpcode.
+    test_lib:highest_opcode(Beam).
 
 deterministic_include(Config) when is_list(Config) ->
     DataDir = proplists:get_value(data_dir, Config),
diff --git a/lib/compiler/test/compiler.cover b/lib/compiler/test/compiler.cover
index 3fd7fc1937..fac0f9947c 100644
--- a/lib/compiler/test/compiler.cover
+++ b/lib/compiler/test/compiler.cover
@@ -1,5 +1,4 @@
-{incl_app,compiler,details}.
-
 %% -*- erlang -*-
+{local_only,compiler,true}.
+{incl_app,compiler,details}.
 {excl_mods,compiler,[core_scan,core_parse]}.
-
diff --git a/lib/compiler/test/core_fold_SUITE.erl b/lib/compiler/test/core_fold_SUITE.erl
index 47606014c3..adfebd5158 100644
--- a/lib/compiler/test/core_fold_SUITE.erl
+++ b/lib/compiler/test/core_fold_SUITE.erl
@@ -212,9 +212,14 @@ bifs(Config) when is_list(Config) ->
     {ok,#{K:=V}} = id(list_to_tuple([ok,#{K=>V}])),
     ok.
 
--define(CMP_SAME(A0, B), (fun(A) -> true = A == B, false = A /= B end)(id(A0))).
--define(CMP_DIFF(A0, B), (fun(A) -> false = A == B, true = A /= B end)(id(A0))).
-	       
+-define(CMP_SAME0(A0, B), (fun(A) -> true = A == B, false = A /= B end)(id(A0))).
+-define(CMP_SAME1(A0, B), (fun(A) -> false = A /= B, true = A == B end)(id(A0))).
+-define(CMP_SAME(A0, B), (true = ?CMP_SAME0(A0, B) =:= not ?CMP_SAME1(A0, B))).
+
+-define(CMP_DIFF0(A0, B), (fun(A) -> false = A == B, true = A /= B end)(id(A0))).
+-define(CMP_DIFF1(A0, B), (fun(A) -> true = A /= B, false = A == B end)(id(A0))).
+-define(CMP_DIFF(A0, B), (true = ?CMP_DIFF0(A0, B) =:= not ?CMP_DIFF1(A0, B))).
+
 eq(Config) when is_list(Config) ->
     ?CMP_SAME([a,b,c], [a,b,c]),
     ?CMP_SAME([42.0], [42.0]),
@@ -278,6 +283,8 @@ coverage(Config) when is_list(Config) ->
     a = cover_remove_non_vars_alias({a,b,c}),
     error = cover_will_match_lit_list(),
     {ok,[a]} = cover_is_safe_bool_expr(a),
+    false = cover_is_safe_bool_expr2(a),
+    ok = cover_eval_is_function(fun id/1),
 
     ok = cover_opt_guard_try(#cover_opt_guard_try{list=[a]}),
     error = cover_opt_guard_try(#cover_opt_guard_try{list=[]}),
@@ -341,6 +348,15 @@ cover_is_safe_bool_expr(X) ->
 	    false
     end.
 
+cover_is_safe_bool_expr2(X) ->
+    try
+	V = [X],
+    is_function(V, 1)
+    catch
+	_:_ ->
+	    false
+    end.
+
 cover_opt_guard_try(Msg) ->
     if
 	length(Msg#cover_opt_guard_try.list) =/= 1 ->
@@ -349,6 +365,12 @@ cover_opt_guard_try(Msg) ->
 	    ok
     end.
 
+cover_eval_is_function(X) ->
+    case X of
+        {a,_} -> is_function(X);
+        _ -> ok
+    end.
+
 bsm_an_inlined(<<_:8>>, _) -> ok;
 bsm_an_inlined(_, _) -> error.
 
@@ -356,7 +378,7 @@ unused_multiple_values_error(Config) when is_list(Config) ->
     PrivDir = proplists:get_value(priv_dir, Config),
     Dir = test_lib:get_data_dir(Config),
     Core = filename:join(Dir, "unused_multiple_values_error"),
-    Opts = [no_copt,clint,return,from_core,{outdir,PrivDir}
+    Opts = [no_copt,clint,ssalint,return,from_core,{outdir,PrivDir}
 	   |test_lib:opt_opts(?MODULE)],
     {error,[{unused_multiple_values_error,
 	     [{none,core_lint,{return_mismatch,{hello,1}}}]}],
@@ -480,7 +502,7 @@ source(true, Activities) ->
 	    Activities
     end.
 
-tim(#{reduction := Emergency}) ->
+tim(#{reduction := _Emergency}) ->
     try
 	fun() -> surgery end
     catch
diff --git a/lib/compiler/test/float_SUITE.erl b/lib/compiler/test/float_SUITE.erl
index 012810aba2..0fa8070dc8 100644
--- a/lib/compiler/test/float_SUITE.erl
+++ b/lib/compiler/test/float_SUITE.erl
@@ -20,15 +20,17 @@
 -module(float_SUITE).
 -export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1, 
 	 init_per_group/2,end_per_group/2,
-	 pending/1,bif_calls/1,math_functions/1,mixed_float_and_int/1]).
+	 pending/1,bif_calls/1,math_functions/1,mixed_float_and_int/1,
+         subtract_number_type/1,float_followed_by_guard/1]).
 
 -include_lib("common_test/include/ct.hrl").
 
 suite() -> [{ct_hooks,[ts_install_cth]}].
 
-all() -> 
+all() ->
     [pending, bif_calls, math_functions,
-     mixed_float_and_int].
+     mixed_float_and_int, subtract_number_type,
+     float_followed_by_guard].
 
 groups() -> 
     [].
@@ -176,5 +178,31 @@ mixed_float_and_int(Config) when is_list(Config) ->
 pc(Cov, NotCov, X) ->
     round(Cov/(Cov+NotCov)*100) + 42 + 2.0*X.
 
+subtract_number_type(Config) when is_list(Config) ->
+    120 = fact(5).
+
+fact(N) ->
+    fact(N, 1).
+
+fact(0, P) -> P;
+fact(1, P) -> P;
+fact(N, P) -> fact(N-1, P*N).
+
+float_followed_by_guard(Config) when is_list(Config) ->
+    true = ffbg_1(5, 1),
+    false = ffbg_1(1, 5),
+    ok.
+
+ffbg_1(A, B0) ->
+    %% This is a non-guard block followed by a *guard block* that starts with a
+    %% floating point operation, and the compiler erroneously assumed that it
+    %% was safe to skip fcheckerror because the next block started with a float
+    %% op.
+    B = id(B0) / 1.0,
+    if
+        A - B > 0.0 -> true;
+        A - B =< 0.0 -> false
+    end.
+
 id(I) -> I.
 
diff --git a/lib/compiler/test/fun_SUITE.erl b/lib/compiler/test/fun_SUITE.erl
index e00885fcd6..1df0a05275 100644
--- a/lib/compiler/test/fun_SUITE.erl
+++ b/lib/compiler/test/fun_SUITE.erl
@@ -249,6 +249,13 @@ badfun(_Config) ->
     expect_badfun(X, catch X(put(?FUNCTION_NAME, of_course))),
     of_course = erase(?FUNCTION_NAME),
 
+    %% A literal as a Fun used to crash the code generator. This only happened
+    %% when type optimization had reduced `Fun` to a literal, hence the match.
+    Literal = fun(literal = Fun) ->
+                      Fun()
+              end,
+    expect_badfun(literal, catch Literal(literal)),
+
     ok.
 
 expect_badfun(Term, Exit) ->
diff --git a/lib/compiler/test/guard_SUITE.erl b/lib/compiler/test/guard_SUITE.erl
index 6ad73b46f7..ed0a56f064 100644
--- a/lib/compiler/test/guard_SUITE.erl
+++ b/lib/compiler/test/guard_SUITE.erl
@@ -35,8 +35,7 @@
 	 basic_andalso_orelse/1,traverse_dcd/1,
 	 check_qlc_hrl/1,andalso_semi/1,t_tuple_size/1,binary_part/1,
 	 bad_constants/1,bad_guards/1,
-         guard_in_catch/1,beam_bool_SUITE/1,
-         cover_beam_dead/1]).
+         guard_in_catch/1,beam_bool_SUITE/1]).
 
 suite() -> [{ct_hooks,[ts_install_cth]}].
 
@@ -54,8 +53,7 @@ groups() ->
        rel_ops,rel_op_combinations,
        literal_type_tests,basic_andalso_orelse,traverse_dcd,
        check_qlc_hrl,andalso_semi,t_tuple_size,binary_part,
-       bad_constants,bad_guards,guard_in_catch,beam_bool_SUITE,
-       cover_beam_dead]}].
+       bad_constants,bad_guards,guard_in_catch,beam_bool_SUITE]}].
 
 init_per_suite(Config) ->
     test_lib:recompile(?MODULE),
@@ -1297,6 +1295,32 @@ rel_ops(Config) when is_list(Config) ->
     Empty = id([]),
     ?T(==, [], Empty),
 
+    %% Cover beam_ssa_dead:turn_op('/=').
+    ok = (fun(A, B) when is_atom(A) ->
+                  X = id(A /= B),
+                  if
+                      X -> ok;
+                      true -> error
+                  end
+          end)(a, b),
+    ok = (fun(A, B) when is_atom(A) ->
+                  X = id(B /= A),
+                  if
+                        X -> ok;
+                        true -> error
+                    end
+            end)(a, b),
+
+    %% Cover beam_ssa_dead.
+    Arrow = fun([T1,T2]) when T1 == $>, T2 == $>;
+                              T1 == $<, T2 == $| ->  true;
+               (_) -> false
+            end,
+    true = Arrow(">>"),
+    true = Arrow("<|"),
+    false = Arrow("><"),
+    false = Arrow(""),
+
     ok.
 
 -undef(TestOp).
@@ -1330,6 +1354,9 @@ rel_op_combinations_1(N, Digits) ->
     Bool = is_digit_6(N),
     Bool = is_digit_7(N),
     Bool = is_digit_8(N),
+    Bool = is_digit_9(42, N),
+    Bool = is_digit_10(N, 0),
+    Bool = is_digit_11(N, 0),
     rel_op_combinations_1(N-1, Digits).
 
 is_digit_1(X) when 16#0660 =< X, X =< 16#0669 -> true;
@@ -1373,6 +1400,24 @@ is_digit_8(X) when X =< 16#0669, X > (16#0660-1) -> true;
 is_digit_8(16#0670) -> false;
 is_digit_8(_) -> false.
 
+is_digit_9(A, 0) when A =:= 42 -> false;
+is_digit_9(_, X) when X > 16#065F, X < 16#066A -> true;
+is_digit_9(_, X) when 16#0030 =< X, X =< 16#0039 -> true;
+is_digit_9(_, X) when 16#06F0 =< X, X =< 16#06F9 -> true;
+is_digit_9(_, _) -> false.
+
+is_digit_10(0, 0) -> false;
+is_digit_10(X, _) when X < 16#066A, 16#0660 =< X -> true;
+is_digit_10(X, _) when 16#0030 =< X, X =< 16#0039 -> true;
+is_digit_10(X, _) when 16#06F0 =< X, X =< 16#06F9 -> true;
+is_digit_10(_, _) -> false.
+
+is_digit_11(0, 0) -> false;
+is_digit_11(X, _) when X =< 16#0669, 16#0660 =< X -> true;
+is_digit_11(X, _) when 16#0030 =< X, X =< 16#0039 -> true;
+is_digit_11(X, _) when 16#06F0 =< X, X =< 16#06F9 -> true;
+is_digit_11(_, _) -> false.
+
 rel_op_combinations_2(0, _) ->
     ok;
 rel_op_combinations_2(N, Range) ->
@@ -1473,6 +1518,7 @@ rel_op_combinations_3(N, Red) ->
     Val = redundant_9(N),
     Val = redundant_10(N),
     Val = redundant_11(N),
+    Val = redundant_11(N),
     rel_op_combinations_3(N-1, Red).
 
 redundant_1(X) when X >= 51, X =< 80 -> 5*X;
@@ -1527,6 +1573,10 @@ redundant_11(X) when X =:= 10 -> 2*X;
 redundant_11(X) when X >= 51, X =< 80 -> 5*X;
 redundant_11(_) -> none.
 
+redundant_12(X) when X >= 50, X =< 80 -> 2*X;
+redundant_12(X) when X < 51 -> 5*X;
+redundant_12(_) -> none.
+
 %% Test type tests on literal values. (From emulator test suites.)
 literal_type_tests(Config) when is_list(Config) ->
     case ?MODULE of
@@ -1779,15 +1829,10 @@ t_tuple_size(Config) when is_list(Config) ->
     error = ludicrous_tuple_size({a,b,c}),
     error = ludicrous_tuple_size([a,b,c]),
 
-    %% Test the "unsafe case" - the register assigned the tuple size is
-    %% not killed.
-    DataDir = test_lib:get_data_dir(Config),
-    File = filename:join(DataDir, "guard_SUITE_tuple_size"),
-    {ok,Mod,Code} = compile:file(File, [from_asm,binary]),
-    code:load_binary(Mod, File, Code),
-    14 = Mod:t({1,2,3,4}),
-    _ = code:delete(Mod),
-    _ = code:purge(Mod),
+    good_ip({1,2,3,4}),
+    good_ip({1,2,3,4,5,6,7,8}),
+    error = validate_ip({42,11}),
+    error = validate_ip(atom),
     
     ok.
 
@@ -1805,6 +1850,16 @@ ludicrous_tuple_size(T)
   when tuple_size(T) =:= 16#FFFFFFFFFFFFFFFF -> ok;
 ludicrous_tuple_size(_) -> error.
 
+good_ip(IP) ->
+    IP = validate_ip(IP).
+
+validate_ip(Value) when is_tuple(Value) andalso
+                        ((size(Value) =:= 4) orelse (size(Value) =:= 8)) ->
+    %% size/1 (converted to tuple_size) used more than once.
+    Value;
+validate_ip(_) ->
+    error.
+
 %%
 %% The binary_part/2,3 guard BIFs
 %%
@@ -2206,32 +2261,6 @@ maps() ->
 evidence(#{0 := Charge}) when 0; #{[] => Charge} == #{[] => 42} ->
     ok.
 
-cover_beam_dead(_Config) ->
-    Mod = ?FUNCTION_NAME,
-    Attr = [],
-    Fs = [{function,test,1,2,
-           [{label,1},
-            {line,[]},
-            {func_info,{atom,Mod},{atom,test},1},
-            {label,2},
-            %% Cover beam_dead:turn_op/1 using swapped operand order.
-            {test,is_ne_exact,{f,3},[{integer,1},{x,0}]},
-            {test,is_eq_exact,{f,1},[{atom,a},{x,0}]},
-            {label,3},
-            {move,{atom,ok},{x,0}},
-            return]}],
-    Exp = [{test,1}],
-    Asm = {Mod,Exp,Attr,Fs,3},
-    {ok,Mod,Beam} = compile:forms(Asm, [from_asm,binary,report]),
-    {module,Mod} = code:load_binary(Mod, Mod, Beam),
-    ok = Mod:test(1),
-    ok = Mod:test(a),
-    {'EXIT',_} = (catch Mod:test(other)),
-    true = code:delete(Mod),
-    _ = code:purge(Mod),
-
-    ok.
-
 %% Call this function to turn off constant propagation.
 id(I) -> I.
 
diff --git a/lib/compiler/test/guard_SUITE_data/guard_SUITE_tuple_size.S b/lib/compiler/test/guard_SUITE_data/guard_SUITE_tuple_size.S
deleted file mode 100644
index cffb792920..0000000000
--- a/lib/compiler/test/guard_SUITE_data/guard_SUITE_tuple_size.S
+++ /dev/null
@@ -1,30 +0,0 @@
-{module, guard_SUITE_tuple_size}.  %% version = 0
-
-{exports, [{t,1}]}.
-
-{attributes, []}.
-
-{labels, 5}.
-
-
-{function, t, 1, 2}.
-  {label,1}.
-    {func_info,{atom,guard_SUITE_tuple_size},{atom,t},1}.
-  {label,2}.
-    {bif,tuple_size,{f,4},[{x,0}],{x,1}}.
-    {test,is_eq_exact,{f,4},[{x,1},{integer,4}]}.
-    {test,is_tuple,{f,3},[{x,0}]}.
-    {test,test_arity,{f,3},[{x,0},4]}.
-    {get_tuple_element,{x,0},0,{x,5}}.
-    {get_tuple_element,{x,0},1,{x,2}}.
-    {get_tuple_element,{x,0},2,{x,3}}.
-    {get_tuple_element,{x,0},3,{x,4}}.
-    {gc_bif,'+',{f,0},6,[{x,1},{x,2}],{x,0}}.
-    {gc_bif,'+',{f,0},6,[{x,0},{x,3}],{x,0}}.
-    {gc_bif,'+',{f,0},6,[{x,0},{x,4}],{x,0}}.
-    {gc_bif,'+',{f,0},6,[{x,0},{x,5}],{x,0}}.
-    return.
-  {label,3}.
-    {badmatch,{x,0}}.
-  {label,4}.
-    {jump,{f,1}}.
diff --git a/lib/compiler/test/inline_SUITE.erl b/lib/compiler/test/inline_SUITE.erl
index dcc703c3e1..aff1a56c47 100644
--- a/lib/compiler/test/inline_SUITE.erl
+++ b/lib/compiler/test/inline_SUITE.erl
@@ -42,13 +42,9 @@ groups() ->
 
 init_per_suite(Config) ->
     test_lib:recompile(?MODULE),
-    Pa = "-pa " ++ filename:dirname(code:which(?MODULE)),
-    {ok,Node} = start_node(compiler, Pa),
-    [{testing_node,Node}|Config].
+    Config.
 
-end_per_suite(Config) ->
-    Node = proplists:get_value(testing_node, Config),
-    test_server:stop_node(Node),
+end_per_suite(_Config) ->
     ok.
 
 init_per_group(_GroupName, Config) ->
@@ -89,26 +85,26 @@ attribute(Config) when is_list(Config) ->
 ?comp(maps_inline_test).
 
 try_inline(Mod, Config) ->
-    Node = proplists:get_value(testing_node, Config),
     Src = filename:join(proplists:get_value(data_dir, Config),
 			atom_to_list(Mod)),
     Out = proplists:get_value(priv_dir,Config),
 
     %% Normal compilation.
     io:format("Compiling: ~s\n", [Src]),
-    {ok,Mod} = compile:file(Src, [{outdir,Out},report,bin_opt_info,clint]),
+    {ok,Mod} = compile:file(Src, [{outdir,Out},report,
+                                  bin_opt_info,clint,ssalint]),
 
     ct:timetrap({minutes,10}),
-    NormalResult = rpc:call(Node, ?MODULE, load_and_call, [Out,Mod]),
+    NormalResult = load_and_call(Out, Mod),
 
     %% Inlining.
     io:format("Compiling with old inliner: ~s\n", [Src]),
     {ok,Mod} = compile:file(Src, [{outdir,Out},report,bin_opt_info,
-					{inline,1000},clint]),
+                                  {inline,1000},clint,ssalint]),
 
     %% Run inlined code.
     ct:timetrap({minutes,10}),
-    OldInlinedResult = rpc:call(Node, ?MODULE, load_and_call, [Out,Mod]),
+    OldInlinedResult = load_and_call(Out, Mod),
 
     %% Compare results.
     compare(NormalResult, OldInlinedResult),
@@ -117,11 +113,11 @@ try_inline(Mod, Config) ->
     %% Inlining.
     io:format("Compiling with new inliner: ~s\n", [Src]),
     {ok,Mod} = compile:file(Src, [{outdir,Out},report,
-					bin_opt_info,inline,clint]),
+					bin_opt_info,inline,clint,ssalint]),
 
     %% Run inlined code.
     ct:timetrap({minutes,10}),
-    InlinedResult = rpc:call(Node, ?MODULE, load_and_call, [Out,Mod]),
+    InlinedResult = load_and_call(Out, Mod),
 
     %% Compare results.
     compare(NormalResult, InlinedResult),
@@ -130,6 +126,11 @@ try_inline(Mod, Config) ->
     %% Delete Beam file.
     ok = file:delete(filename:join(Out, atom_to_list(Mod)++code:objfile_extension())),
 
+    %% Delete loaded module.
+    _ = code:purge(Mod),
+    _ = code:delete(Mod),
+    _ = code:purge(Mod),
+
     ok.
 
 compare(Same, Same) -> ok;
@@ -143,12 +144,6 @@ compare([H1|_], [H2|_]) ->
     ct:fail(different);
 compare([], []) -> ok.
 
-start_node(Name, Args) ->
-    case test_server:start_node(Name, slave, [{args,Args}]) of
-	{ok,Node} -> {ok, Node};
-	Error  -> ct:fail(Error)
-    end.
-
 load_and_call(Out, Module) ->
     io:format("Loading...\n",[]),
     code:purge(Module),
@@ -349,9 +344,8 @@ otp_7223_2({a}) ->
     1.
 
 coverage(Config) when is_list(Config) ->
-    Mod = bsdecode,
+    Mod = attribute,
     Src = filename:join(proplists:get_value(data_dir, Config), Mod),
-    {ok,Mod,_} = compile:file(Src, [binary,report,{inline,0},clint]),
-    {ok,Mod,_} = compile:file(Src, [binary,report,{inline,20},
-				    verbose,clint]),
+    {ok,Mod,_} = compile:file(Src, [binary,report,{inline,0},
+                                    clint,ssalint]),
     ok.
diff --git a/lib/compiler/test/inline_SUITE_data/barnes2.erl b/lib/compiler/test/inline_SUITE_data/barnes2.erl
index a986331060..49e9bdfb6b 100644
--- a/lib/compiler/test/inline_SUITE_data/barnes2.erl
+++ b/lib/compiler/test/inline_SUITE_data/barnes2.erl
@@ -6,7 +6,7 @@
 ?MODULE() ->
     Stars = create_scenario(1000, 1.0),
     R = hd(loop(10,1000.0,Stars,0)),
-    Str = lists:flatten(io:lib_format("~s", [R])),
+    Str = lists:flatten(io_lib:format("~p", [R])),
     {R,Str =:= {1.00000,-1.92269e+4,-1.92269e+4,2.86459e-2,2.86459e-2}}.
 
 create_scenario(N, M) ->
diff --git a/lib/compiler/test/map_SUITE.erl b/lib/compiler/test/map_SUITE.erl
index 3e0ab78390..440b632381 100644
--- a/lib/compiler/test/map_SUITE.erl
+++ b/lib/compiler/test/map_SUITE.erl
@@ -70,7 +70,10 @@
 	t_bad_update/1,
 
         %% new in OTP 21
-        t_reused_key_variable/1
+        t_reused_key_variable/1,
+
+        %% new in OTP 22
+        t_mixed_clause/1,cover_beam_trim/1
     ]).
 
 suite() -> [].
@@ -124,7 +127,10 @@ all() ->
         t_bad_update,
 
         %% new in OTP 21
-        t_reused_key_variable
+        t_reused_key_variable,
+
+        %% new in OTP 22
+        t_mixed_clause,cover_beam_trim
     ].
 
 groups() -> [].
@@ -1373,22 +1379,22 @@ map_usage(Def, Used) ->
 
 
 t_guard_sequence(Config) when is_list(Config) ->
-	{1, "a"} = map_guard_sequence_1(#{seq=>1,val=>id("a")}),
-	{2, "b"} = map_guard_sequence_1(#{seq=>2,val=>id("b")}),
-	{3, "c"} = map_guard_sequence_1(#{seq=>3,val=>id("c")}),
-	{4, "d"} = map_guard_sequence_1(#{seq=>4,val=>id("d")}),
-	{5, "e"} = map_guard_sequence_1(#{seq=>5,val=>id("e")}),
-
-	{1,M1}       = map_guard_sequence_2(M1 = id(#{a=>3})),
-	{2,M2}       = map_guard_sequence_2(M2 = id(#{a=>4, b=>4})),
-	{3,gg,M3}    = map_guard_sequence_2(M3 = id(#{a=>gg, b=>4})),
-	{4,sc,sc,M4} = map_guard_sequence_2(M4 = id(#{a=>sc, b=>3, c=>sc2})),
-	{5,kk,kk,M5} = map_guard_sequence_2(M5 = id(#{a=>kk, b=>other, c=>sc2})),
-	
-	%% error case
-	{'EXIT',{function_clause,_}} = (catch map_guard_sequence_1(#{seq=>6,val=>id("e")})),
-	{'EXIT',{function_clause,_}} = (catch map_guard_sequence_2(#{b=>5})),
-	ok.
+    {1, "a"} = map_guard_sequence_1(#{seq=>1,val=>id("a")}),
+    {2, "b"} = map_guard_sequence_1(#{seq=>2,val=>id("b")}),
+    {3, "c"} = map_guard_sequence_1(#{seq=>3,val=>id("c")}),
+    {4, "d"} = map_guard_sequence_1(#{seq=>4,val=>id("d")}),
+    {5, "e"} = map_guard_sequence_1(#{seq=>5,val=>id("e")}),
+
+    {1,M1}       = map_guard_sequence_2(M1 = id(#{a=>3})),
+    {2,M2}       = map_guard_sequence_2(M2 = id(#{a=>4, b=>4})),
+    {3,gg,M3}    = map_guard_sequence_2(M3 = id(#{a=>gg, b=>4})),
+    {4,sc,sc,M4} = map_guard_sequence_2(M4 = id(#{a=>sc, b=>3, c=>sc2})),
+    {5,kk,kk,M5} = map_guard_sequence_2(M5 = id(#{a=>kk, b=>other, c=>sc2})),
+
+    %% error case
+    {'EXIT',{function_clause,_}} = (catch map_guard_sequence_1(#{seq=>6,val=>id("e")})),
+    {'EXIT',{function_clause,_}} = (catch map_guard_sequence_2(#{b=>5})),
+    ok.
 
 t_guard_sequence_large(Config) when is_list(Config) ->
     M0 = id(#{ 10=>a0,20=>b0,30=>"c0","40"=>"d0",<<"50">>=>"e0",{["00",03]}=>"10",
@@ -1443,21 +1449,21 @@ t_guard_sequence_large(Config) when is_list(Config) ->
                   18=>a8,28=>b8,38=>"c8","48"=>"d8",<<"58">>=>"e8",{["08"]}=>"18",
                   19=>a9,29=>b9,39=>"c9","49"=>"d9",<<"59">>=>"e9",{["09"]}=>"19" } => "large map key 2" }),
 
-	{1, "a"} = map_guard_sequence_1(M0#{seq=>1,val=>id("a")}),
-	{2, "b"} = map_guard_sequence_1(M0#{seq=>2,val=>id("b")}),
-	{3, "c"} = map_guard_sequence_1(M0#{seq=>3,val=>id("c")}),
-	{4, "d"} = map_guard_sequence_1(M0#{seq=>4,val=>id("d")}),
-	{5, "e"} = map_guard_sequence_1(M0#{seq=>5,val=>id("e")}),
+    {1, "a"} = map_guard_sequence_1(M0#{seq=>1,val=>id("a")}),
+    {2, "b"} = map_guard_sequence_1(M0#{seq=>2,val=>id("b")}),
+    {3, "c"} = map_guard_sequence_1(M0#{seq=>3,val=>id("c")}),
+    {4, "d"} = map_guard_sequence_1(M0#{seq=>4,val=>id("d")}),
+    {5, "e"} = map_guard_sequence_1(M0#{seq=>5,val=>id("e")}),
 
-	{1,M1}       = map_guard_sequence_2(M1 = id(M0#{a=>3})),
-	{2,M2}       = map_guard_sequence_2(M2 = id(M0#{a=>4, b=>4})),
-	{3,gg,M3}    = map_guard_sequence_2(M3 = id(M0#{a=>gg, b=>4})),
-	{4,sc,sc,M4} = map_guard_sequence_2(M4 = id(M0#{a=>sc, b=>3, c=>sc2})),
-	{5,kk,kk,M5} = map_guard_sequence_2(M5 = id(M0#{a=>kk, b=>other, c=>sc2})),
+    {1,M1}       = map_guard_sequence_2(M1 = id(M0#{a=>3})),
+    {2,M2}       = map_guard_sequence_2(M2 = id(M0#{a=>4, b=>4})),
+    {3,gg,M3}    = map_guard_sequence_2(M3 = id(M0#{a=>gg, b=>4})),
+    {4,sc,sc,M4} = map_guard_sequence_2(M4 = id(M0#{a=>sc, b=>3, c=>sc2})),
+    {5,kk,kk,M5} = map_guard_sequence_2(M5 = id(M0#{a=>kk, b=>other, c=>sc2})),
 
-	{'EXIT',{function_clause,_}} = (catch map_guard_sequence_1(M0#{seq=>6,val=>id("e")})),
-	{'EXIT',{function_clause,_}} = (catch map_guard_sequence_2(M0#{b=>5})),
-        ok.
+    {'EXIT',{function_clause,_}} = (catch map_guard_sequence_1(M0#{seq=>6,val=>id("e")})),
+    {'EXIT',{function_clause,_}} = (catch map_guard_sequence_2(M0#{b=>5})),
+    ok.
 
 map_guard_sequence_1(#{seq:=1=Seq, val:=Val}) -> {Seq,Val};
 map_guard_sequence_1(#{seq:=2=Seq, val:=Val}) -> {Seq,Val};
@@ -2079,7 +2085,7 @@ t_register_corruption(Config) when is_list(Config) ->
     {3,wanted,<<"value">>} = register_corruption_foo(wanted,M),
     ok.
 
-register_corruption_foo(A,#{a := V1, b := V2}) ->
+register_corruption_foo(_,#{a := V1, b := V2}) ->
     register_corruption_dummy_call(1,V1,V2);
 register_corruption_foo(A,#{b := V}) ->
     register_corruption_dummy_call(2,A,V);
@@ -2161,6 +2167,31 @@ t_reused_key_variable(Config) when is_list(Config) ->
             ok
     end.
 
+t_mixed_clause(_Config) ->
+    put(fool_inliner, x),
+    K = get(fool_inliner),
+    {42,100} = case #{K=>42,y=>100} of
+                   #{x:=X,y:=Y} ->
+                       {X,Y}
+               end,
+    nomatch = case #{K=>42,y=>100} of
+                  #{x:=X,y:=0} ->
+                      {X,Y};
+                  #{} ->
+                      nomatch
+              end,
+    ok.
+
+cover_beam_trim(_Config) ->
+    val = do_cover_beam_trim(id, max, max, id, #{id=>val}),
+    ok.
+
+do_cover_beam_trim(Id, OldMax, Max, Id, M) ->
+    OldMax = id(Max),
+    #{Id:=Val} = id(M),
+    Val.
+
+
 %% aux
 
 rand_terms(0) -> [];
diff --git a/lib/compiler/test/match_SUITE.erl b/lib/compiler/test/match_SUITE.erl
index e3f842b668..94bfbb0efe 100644
--- a/lib/compiler/test/match_SUITE.erl
+++ b/lib/compiler/test/match_SUITE.erl
@@ -25,7 +25,7 @@
 	 match_in_call/1,untuplify/1,shortcut_boolean/1,letify_guard/1,
 	 selectify/1,deselectify/1,underscore/1,match_map/1,map_vars_used/1,
 	 coverage/1,grab_bag/1,literal_binary/1,
-         unary_op/1]).
+         unary_op/1,eq_types/1,match_after_return/1]).
 	 
 -include_lib("common_test/include/ct.hrl").
 
@@ -40,7 +40,8 @@ groups() ->
        match_in_call,untuplify,
        shortcut_boolean,letify_guard,selectify,deselectify,
        underscore,match_map,map_vars_used,coverage,
-       grab_bag,literal_binary,unary_op]}].
+       grab_bag,literal_binary,unary_op,eq_types,
+       match_after_return]}].
 
 
 init_per_suite(Config) ->
@@ -254,6 +255,8 @@ non_matching_aliases(_Config) ->
     none = mixed_aliases([d]),
     none = mixed_aliases({a,42}),
     none = mixed_aliases(42),
+    none = mixed_aliases(<<6789:16>>),
+    none = mixed_aliases(#{key=>value}),
 
     {'EXIT',{{badmatch,42},_}} = (catch nomatch_alias(42)),
     {'EXIT',{{badmatch,job},_}} = (catch entirely()),
@@ -279,6 +282,16 @@ mixed_aliases(<<X:8>> = x) -> {a,X};
 mixed_aliases([b] = <<X:8>>) -> {b,X};
 mixed_aliases(<<X:8>> = {a,X}) -> {c,X};
 mixed_aliases([X] = <<X:8>>) -> {d,X};
+mixed_aliases(<<X:16>> = X) -> {e,X};
+mixed_aliases(X = <<X:16>>) -> {f,X};
+mixed_aliases(<<X:16,_/binary>> = X) -> {g,X};
+mixed_aliases(X = <<X:16,_/binary>>) -> {h,X};
+mixed_aliases(X = #{key:=X}) -> {i,X};
+mixed_aliases(#{key:=X} = X) -> {j,X};
+mixed_aliases([X] = #{key:=X}) -> {k,X};
+mixed_aliases(#{key:=X} = [X]) -> {l,X};
+mixed_aliases({a,X} = #{key:=X}) -> {m,X};
+mixed_aliases(#{key:=X} = {a,X}) -> {n,X};
 mixed_aliases(_) -> none.
 
 nomatch_alias(I) ->
@@ -378,6 +391,13 @@ untuplify(Config) when is_list(Config) ->
     %% We do this to cover sys_core_fold:unalias_pat/1.
     {1,2,3,4,alias,{[1,2],{3,4},alias}} = untuplify_1([1,2], {3,4}, alias),
     error = untuplify_1([1,2], {3,4}, 42),
+
+    %% Test that a previous bug in v3_codegen is gone. (The sinking of
+    %% stack frames into only the case arms that needed them was not always
+    %% safe.)
+    [33, -1, -33, 1] = untuplify_2(32, 65),
+    {33, 1, -33, -1} = untuplify_2(65, 32),
+
     ok.
 
 untuplify_1(A, B, C) ->
@@ -390,6 +410,21 @@ untuplify_1(A, B, C) ->
 	    error
     end.
 
+untuplify_2(V1, V2) ->
+    {D1,D2,D3,D4} =
+        if V1 > V2 ->
+                %% The 1 value was overwritten by the value of V2-V1.
+                {V1-V2,  1,  V2-V1, -1};
+           true ->
+                {V2-V1, -1, V1-V2,  1}
+        end,
+    if
+        D2 > D4 ->
+            {D1, D2, D3, D4};
+        true ->
+            [D1, D2, D3, D4]
+    end.
+
 %% Coverage of beam_dead:shortcut_boolean_label/4.
 shortcut_boolean(Config) when is_list(Config) ->
     false = shortcut_boolean_1([0]),
@@ -434,6 +469,7 @@ letify_guard(A, B) ->
 selectify(Config) when is_list(Config) ->
     integer = sel_different_types({r,42}),
     atom = sel_different_types({r,forty_two}),
+    float = sel_different_types({r,100.0}),
     none = sel_different_types({r,18}),
     {'EXIT',_} = (catch sel_different_types([a,b,c])),
 
@@ -444,12 +480,15 @@ selectify(Config) when is_list(Config) ->
     integer42 = sel_same_value2(42),
     integer43 = sel_same_value2(43),
     error = sel_same_value2(44),
+
     ok.
 
 sel_different_types({r,_}=T) when element(2, T) =:= forty_two ->
     atom;
 sel_different_types({r,_}=T) when element(2, T) =:= 42 ->
     integer;
+sel_different_types({r,_}=T) when element(2, T) =:= 100.0 ->
+    float;
 sel_different_types({r,_}) ->
     none.
 
@@ -467,9 +506,8 @@ sel_same_value2(V) when V =:= 42; V =:= 43 ->
 sel_same_value2(_) ->
     error.
 
-%% Test deconstruction of select_val instructions in beam_peep into
-%% regular tests with just one possible value left. Hitting proper cases
-%% in beam_peep relies on unification of labels by beam_jump.
+%% Test deconstruction of select_val instructions to regular tests
+%% with zero or one values left.
 
 deselectify(Config) when is_list(Config) ->
     one_or_other = desel_tuple_arity({1}),
@@ -490,7 +528,31 @@ deselectify(Config) when is_list(Config) ->
 
     one_or_other = dsel_atom_typecheck(one),
     two = dsel_atom_typecheck(two),
-    one_or_other = dsel_atom_typecheck(three).
+    one_or_other = dsel_atom_typecheck(three),
+
+    %% Cover deconstruction of select_val instructions in
+    %% beam_peep.
+
+    stop = dsel_peek_0(stop),
+    ignore = dsel_peek_0(ignore),
+    Config = dsel_peek_0(Config),
+
+    stop = dsel_peek_1(stop, any),
+    Config = dsel_peek_1(ignore, Config),
+    other = dsel_peek_1(other, ignored),
+
+    0 = dsel_peek_2(0, any),
+    Config = dsel_peek_2(1, Config),
+    2 = dsel_peek_2(2, ignored),
+
+    true = dsel_peek_3(true),
+    false = dsel_peek_3(false),
+    {error,Config} = dsel_peek_3(Config),
+
+    ok.
+
+%% The following will be optimized by the sharing optimizations
+%% in beam_ssa_opt.
 
 desel_tuple_arity(Tuple) when is_tuple(Tuple) ->
     case Tuple of
@@ -527,6 +589,39 @@ dsel_atom_typecheck(Val) when is_atom(Val) ->
         _ -> one_or_other
     end.
 
+%% The following functions are carefully crafted so that the sharing
+%% optimizations in beam_ssa_opt can't be applied. After applying the
+%% beam_jump:eliminate_moves/1 optimization and beam_clean:clean_labels/1
+%% has unified labels, beam_peep is able to optimize these functions.
+
+dsel_peek_0(A0) ->
+    case id(A0) of
+        stop ->   stop;
+        ignore -> ignore;
+        A ->      A
+    end.
+
+dsel_peek_1(A0, B) ->
+    case id(A0) of
+        stop ->   stop;
+        ignore -> B;
+        A ->      A
+    end.
+
+dsel_peek_2(A0, B) ->
+    case id(A0) of
+        0 -> 0;
+        1 -> B;
+        A -> A
+    end.
+
+dsel_peek_3(A0) ->
+    case id(A0) of
+        true ->  true;
+        false -> false;
+        Other -> {error,Other}
+    end.
+
 underscore(Config) when is_list(Config) ->
     case Config of
 	[] ->
@@ -569,13 +664,26 @@ do_map_vars_used(X, Y, Map) ->
 	    Val
     end.
 
+-record(coverage_id, {bool=false,id}).
 coverage(Config) when is_list(Config) ->
     %% Cover beam_dead.
     ok = coverage_1(x, a),
     ok = coverage_1(x, b),
 
     %% Cover sys_pre_expand.
-    ok = coverage_3("abc").
+    ok = coverage_3("abc"),
+
+    %% Cover beam_ssa_dead.
+    {expr,key} = coverage_4([literal,get], [[expr,key]]),
+    {expr,key} = coverage_4([expr,key], []),
+
+    a = coverage_5([8,8,8], #coverage_id{bool=true}),
+    b = coverage_5([], #coverage_id{bool=true}),
+
+    %% Cover beam_ssa_opt.
+    ok = coverage_6(),
+
+    ok.
 
 coverage_1(B, Tag) ->
     case Tag of
@@ -588,6 +696,37 @@ coverage_2(2, b, x) -> ok.
 
 coverage_3([$a]++[]++"bc") -> ok.
 
+%% Cover beam_ssa_dead:eval_type_test_1(is_nonempty_list, Arg).
+coverage_4([literal,get], [Expr]) ->
+    coverage_4(Expr, []);
+coverage_4([Expr,Key], []) ->
+    {Expr,Key}.
+
+%% Cover beam_ssa_dead:eval_type_test_1(is_tagged_tuple, Arg).
+coverage_5(Config, TermId)
+  when TermId =:= #coverage_id{bool=true},
+       Config =:= [8,8,8] ->
+    a;
+coverage_5(_Config, #coverage_id{bool=true}) ->
+    b.
+
+coverage_6() ->
+    X = 17,
+    case
+        case id(1) > 0 of
+            true ->
+                17;
+            false ->
+                42
+        end
+    of
+        X ->
+            ok;
+        V ->
+            %% Cover beam_ssa_opt:make_literal/2.
+            error([error,X,V])
+    end.
+
 grab_bag(_Config) ->
     [_|T] = id([a,b,c]),
     [b,c] = id(T),
@@ -732,5 +871,35 @@ unary_op_1(Vop@1) ->
             end
     end.
 
+eq_types(_Config) ->
+    Ref = make_ref(),
+    Ref = eq_types(Ref, any),
+    ok.
+
+eq_types(A, B) ->
+    %% {put_tuple2,{y,0},{list,[{x,0},{x,1}]}}.
+    Term0 = {A, B},
+    Term = id(Term0),
+
+    %% {test,is_eq_exact,{f,3},[{y,0},{x,0}]}.
+    %% Here beam_validator must infer that {x,0} has the
+    %% same type as {y,0}.
+    Term = Term0,
+
+    %% {get_tuple_element,{x,0},0,{x,0}}.
+    {Ref22,_} = Term,
+
+    Ref22.
+
+match_after_return(Config) when is_list(Config) ->
+    %% The return type of the following call will never match the 'wont_happen'
+    %% clauses below, and the beam_ssa_type was clever enough to see that but
+    %% didn't remove the blocks, so it crashed when trying to extract A.
+    ok = case mar_test_tuple(erlang:unique_integer()) of
+            {gurka, never_matches, A} -> {wont_happen, A};
+            _ -> ok
+         end.
+
+mar_test_tuple(I) -> {gurka, I}.
 
 id(I) -> I.
diff --git a/lib/compiler/test/misc_SUITE.erl b/lib/compiler/test/misc_SUITE.erl
index a1d931b994..a0b415ceaa 100644
--- a/lib/compiler/test/misc_SUITE.erl
+++ b/lib/compiler/test/misc_SUITE.erl
@@ -161,17 +161,16 @@ md5_1(Beam) ->
 %% Cover some code that handles internal errors.
 
 silly_coverage(Config) when is_list(Config) ->
-    %% sys_core_fold, sys_core_alias, sys_core_bsm, sys_core_setel, v3_kernel
+    %% sys_core_fold, sys_core_alias, sys_core_bsm, v3_kernel
     BadCoreErlang = {c_module,[],
 		     name,[],[],
 		     [{{c_var,[],{foo,2}},seriously_bad_body}]},
     expect_error(fun() -> sys_core_fold:module(BadCoreErlang, []) end),
     expect_error(fun() -> sys_core_alias:module(BadCoreErlang, []) end),
     expect_error(fun() -> sys_core_bsm:module(BadCoreErlang, []) end),
-    expect_error(fun() -> sys_core_dsetel:module(BadCoreErlang, []) end),
     expect_error(fun() -> v3_kernel:module(BadCoreErlang, []) end),
 
-    %% v3_codegen
+    %% beam_kernel_to_ssa
     BadKernel = {k_mdef,[],?MODULE,
 		 [{foo,0}],
 		 [],
@@ -179,7 +178,38 @@ silly_coverage(Config) when is_list(Config) ->
 		   {k,[],[],[]},
 		   f,0,[],
 		   seriously_bad_body}]},
-    expect_error(fun() -> v3_codegen:module(BadKernel, []) end),
+    expect_error(fun() -> beam_kernel_to_ssa:module(BadKernel, []) end),
+
+    %% beam_ssa_lint
+    %% beam_ssa_recv
+    %% beam_ssa_share
+    %% beam_ssa_pre_codegen
+    %% beam_ssa_codegen
+    BadSSA = {b_module,#{},a,b,c,
+              [{b_function,#{func_info=>{mod,foo,0}},args,bad_blocks,0}]},
+    expect_error(fun() -> beam_ssa_lint:module(BadSSA, []) end),
+    expect_error(fun() -> beam_ssa_recv:module(BadSSA, []) end),
+    expect_error(fun() -> beam_ssa_share:module(BadSSA, []) end),
+    expect_error(fun() -> beam_ssa_pre_codegen:module(BadSSA, []) end),
+    expect_error(fun() -> beam_ssa_codegen:module(BadSSA, []) end),
+
+    %% beam_ssa_opt
+    BadSSABlocks = #{0 => {b_blk,#{},[bad_code],{b_ret,#{},arg}}},
+    BadSSAOpt = {b_module,#{},a,[],c,
+                 [{b_function,#{func_info=>{mod,foo,0}},[],
+                   BadSSABlocks,0}]},
+    expect_error(fun() -> beam_ssa_opt:module(BadSSAOpt, []) end),
+
+    %% beam_ssa_lint, beam_ssa_pp
+    {error,[{_,Errors}]} = beam_ssa_lint:module(bad_ssa_lint_input(), []),
+    _ = [io:put_chars(Mod:format_error(Reason)) ||
+            {Mod,Reason} <- Errors],
+
+    %% Cover printing of annotations in beam_ssa_pp
+    PPAnno = #{func_info=>{mod,foo,0},other_anno=>value,map_anno=>#{k=>v}},
+    PPBlocks = #{0=>{b_blk,#{},[],{b_ret,#{},{b_literal,42}}}},
+    PP = {b_function,PPAnno,[],PPBlocks,0},
+    io:put_chars(beam_ssa_pp:format_function(PP)),
 
     %% beam_a
     BeamAInput = {?MODULE,[{foo,0}],[],
@@ -189,14 +219,6 @@ silly_coverage(Config) when is_list(Config) ->
 		     {label,2}|non_proper_list]}],99},
     expect_error(fun() -> beam_a:module(BeamAInput, []) end),
 
-    %% beam_reorder
-    BlockInput = {?MODULE,[{foo,0}],[],
-		  [{function,foo,0,2,
-		    [{label,1},
-		     {func_info,{atom,?MODULE},{atom,foo},0},
-		     {label,2}|non_proper_list]}],99},
-    expect_error(fun() -> beam_reorder:module(BlockInput, []) end),
-
     %% beam_block
     BlockInput = {?MODULE,[{foo,0}],[],
 		  [{function,foo,0,2,
@@ -205,19 +227,6 @@ silly_coverage(Config) when is_list(Config) ->
 		     {label,2}|non_proper_list]}],99},
     expect_error(fun() -> beam_block:module(BlockInput, []) end),
 
-    %% beam_bs
-    BsInput = BlockInput,
-    expect_error(fun() -> beam_bs:module(BsInput, []) end),
-
-    %% beam_type
-    TypeInput = {?MODULE,[{foo,0}],[],
-		   [{function,foo,0,2,
-		     [{label,1},
-		      {line,loc},
-		      {func_info,{atom,?MODULE},{atom,foo},0},
-		      {label,2}|non_proper_list]}],99},
-    expect_error(fun() -> beam_type:module(TypeInput, []) end),
-
     %% beam_except
     ExceptInput = {?MODULE,[{foo,0}],[],
 		   [{function,foo,0,2,
@@ -227,15 +236,9 @@ silly_coverage(Config) when is_list(Config) ->
 		      {label,2}|non_proper_list]}],99},
     expect_error(fun() -> beam_except:module(ExceptInput, []) end),
 
-    %% beam_dead. This is tricky. Our function must look OK to
-    %% beam_utils:clean_labels/1, but must crash beam_dead.
-    DeadInput = {?MODULE,[{foo,0}],[],
-		  [{function,foo,0,2,
-		    [{label,1},
-		     {func_info,{atom,?MODULE},{atom,foo},0},
-		     {label,2},
-		     {test,is_eq_exact,{f,1},[bad,operands]}]}],99},
-    expect_error(fun() -> beam_dead:module(DeadInput, []) end),
+    %% beam_jump
+    JumpInput = BlockInput,
+    expect_error(fun() -> beam_jump:module(JumpInput, []) end),
 
     %% beam_clean
     CleanInput = {?MODULE,[{foo,0}],[],
@@ -246,6 +249,10 @@ silly_coverage(Config) when is_list(Config) ->
 		     {jump,{f,42}}]}],99},
     expect_error(fun() -> beam_clean:module(CleanInput, []) end),
 
+    %% beam_jump
+    TrimInput = BlockInput,
+    expect_error(fun() -> beam_trim:module(TrimInput, []) end),
+
     %% beam_peep. This is tricky. Use a select instruction with
     %% an odd number of elements in the list to crash
     %% prune_redundant_values/2 but not beam_clean:clean_labels/1.
@@ -253,48 +260,10 @@ silly_coverage(Config) when is_list(Config) ->
 		 [{function,foo,0,2,
 		   [{label,1},
 		    {func_info,{atom,?MODULE},{atom,foo},0},
-		    {label,2},{select,op,r,{f,2},[{f,2}]}]}],
+		    {label,2},{select,select_val,r,{f,2},[{f,2}]}]}],
 		 2},
     expect_error(fun() -> beam_peep:module(PeepInput, []) end),
 
-    %% beam_bsm. This is tricky. Our function must be sane enough to not crash
-    %% btb_index/1, but must crash the main optimization pass.
-    BsmInput = {?MODULE,[{foo,0}],[],
-		[{function,foo,0,2,
-		  [{label,1},
-		   {func_info,{atom,?MODULE},{atom,foo},0},
-		   {label,2},
-		   {test,bs_get_binary2,{f,99},0,[{x,0},{atom,all},1,[]],{x,0}},
-		   {block,[a|b]}]}],0},
-    expect_error(fun() -> beam_bsm:module(BsmInput, []) end),
-
-    %% beam_receive.
-    ReceiveInput = {?MODULE,[{foo,0}],[],
-		    [{function,foo,0,2,
-		      [{label,1},
-		       {func_info,{atom,?MODULE},{atom,foo},0},
-		       {label,2},
-		       {call_ext,0,{extfunc,erlang,make_ref,0}},
-		       {block,[a|b]}]}],0},
-    expect_error(fun() -> beam_receive:module(ReceiveInput, []) end),
-
-    %% beam_record.
-    RecordInput = {?MODULE,[{foo,0}],[],
-		    [{function,foo,1,2,
-		      [{label,1},
-		       {func_info,{atom,?MODULE},{atom,foo},1},
-                       {label,2},
-                       {test,is_tuple,{f,1},[{x,0}]},
-                       {test,test_arity,{f,1},[{x,0},3]},
-                       {block,[{set,[{x,1}],[{x,0}],{get_tuple_element,0}}]},
-                       {test,is_eq_exact,{f,1},[{x,1},{atom,bar}]},
-                       {block,[{set,[{x,2}],[{x,0}],{get_tuple_element,1}}|a]},
-                       {test,is_eq_exact,{f,1},[{x,2},{integer,1}]},
-                       {block,[{set,[{x,0}],[{atom,ok}],move}]},
-                       return]}],0},
-
-    expect_error(fun() -> beam_record:module(RecordInput, []) end),
-
     BeamZInput = {?MODULE,[{foo,0}],[],
 		  [{function,foo,0,2,
 		    [{label,1},
@@ -312,6 +281,31 @@ silly_coverage(Config) when is_list(Config) ->
 
     ok.
 
+bad_ssa_lint_input() ->
+    {b_module,#{},t,
+     [{foobar,1},{module_info,0},{module_info,1}],
+     [],
+     [{b_function,
+       #{func_info => {t,foobar,1},location => {"t.erl",4}},
+       [{b_var,0}],
+       #{0 => {b_blk,#{},[],{b_ret,#{},{b_var,'@undefined_var'}}}},
+       3},
+      {b_function,
+       #{func_info => {t,module_info,0}},
+       [],
+       #{0 =>
+             {b_blk,#{},
+              [{b_set,#{},
+                {b_var,{'@ssa_ret',3}},
+                call,
+                [{b_remote,
+                  {b_literal,erlang},
+                  {b_literal,get_module_info},
+                  1},
+                 {b_var,'@unknown_variable'}]}],
+              {b_ret,#{},{b_var,{'@ssa_ret',3}}}}},
+       4}]}.
+
 expect_error(Fun) ->
     try	Fun() of
 	Any ->
diff --git a/lib/compiler/test/receive_SUITE.erl b/lib/compiler/test/receive_SUITE.erl
index 4219768d6f..0038eb1a4b 100644
--- a/lib/compiler/test/receive_SUITE.erl
+++ b/lib/compiler/test/receive_SUITE.erl
@@ -25,7 +25,8 @@
 	 init_per_group/2,end_per_group/2,
 	 init_per_testcase/2,end_per_testcase/2,
 	 export/1,recv/1,coverage/1,otp_7980/1,ref_opt/1,
-	 wait/1,recv_in_try/1,double_recv/1]).
+	 wait/1,recv_in_try/1,double_recv/1,receive_var_zero/1,
+         match_built_terms/1]).
 
 -include_lib("common_test/include/ct.hrl").
 
@@ -45,7 +46,8 @@ all() ->
 groups() -> 
     [{p,test_lib:parallel(),
       [recv,coverage,otp_7980,ref_opt,export,wait,
-       recv_in_try,double_recv]}].
+       recv_in_try,double_recv,receive_var_zero,
+       match_built_terms]}].
 
 
 init_per_suite(Config) ->
@@ -378,4 +380,51 @@ do_double_recv(_, Msg) ->
             error
     end.
 
+%% Test 'after Z', when Z =:= 0 been propagated as an immediate by the type
+%% optimization pass.
+receive_var_zero(Config) when is_list(Config) ->
+    self() ! x,
+    self() ! y,
+    Z = zero(),
+    timeout = receive
+                  z -> ok
+              after Z -> timeout
+              end,
+    timeout = receive
+              after Z -> timeout
+              end,
+    self() ! w,
+    receive
+	x -> ok;
+	Other ->
+	    ct:fail({bad_message,Other})
+    end.
+
+zero() -> 0.
+
+%% ERL-862; the validator would explode when a term was constructed in a
+%% receive guard.
+
+-define(MATCH_BUILT_TERM(Ref, Expr),
+        (fun() ->
+                 Ref = make_ref(),
+                 A = id($a),
+                 B = id($b),
+                 Built = id(Expr),
+                 self() ! {Ref, A, B},
+                 receive
+                     {Ref, A, B} when Expr =:= Built ->
+                         ok
+                 after 5000 ->
+                     ct:fail("Failed to match message with term built in "
+                             "receive guard.")
+                 end
+         end)()).
+
+match_built_terms(Config) when is_list(Config) ->
+    ?MATCH_BUILT_TERM(Ref, [A, B]),
+    ?MATCH_BUILT_TERM(Ref, {A, B}),
+    ?MATCH_BUILT_TERM(Ref, <<A, B>>),
+    ?MATCH_BUILT_TERM(Ref, #{ 1 => A, 2 => B}).
+
 id(I) -> I.
diff --git a/lib/compiler/test/receive_SUITE_data/ref_opt/no_5.erl b/lib/compiler/test/receive_SUITE_data/ref_opt/no_5.erl
new file mode 100644
index 0000000000..4fbde3a83d
--- /dev/null
+++ b/lib/compiler/test/receive_SUITE_data/ref_opt/no_5.erl
@@ -0,0 +1,38 @@
+-module(no_5).
+-compile([export_all,nowarn_export_all]).
+
+?MODULE() ->
+    ok.
+
+%% Nested receives were not handled properly.
+
+confusing_recv_mark(Pid) ->
+    Ref = make_ref(),
+    %% There would be a recv_mark here.
+    MRef = erlang:monitor(process, Pid),
+    receive
+        Ref ->
+            %% And a recv_set here.
+            receive
+                MRef -> gurka
+            end;
+        MRef ->
+            gaffel
+    end.
+
+%% The optimization could potentially be improved to
+%% handle matching of multiple refs, like this:
+
+proper_recv_mark(Pid) ->
+    %% Place the recv_mark before the creation of both refs.
+    Ref = make_ref(),
+    MRef = erlang:monitor(process, Pid),
+    %% Place the recv_set here.
+    receive
+        Ref ->
+            receive
+                MRef -> gurka
+            end;
+        MRef ->
+            gaffel
+    end.
diff --git a/lib/compiler/test/receive_SUITE_data/ref_opt/yes_14.S b/lib/compiler/test/receive_SUITE_data/ref_opt/yes_14.S
deleted file mode 100644
index fd14228135..0000000000
--- a/lib/compiler/test/receive_SUITE_data/ref_opt/yes_14.S
+++ /dev/null
@@ -1,71 +0,0 @@
-{module, yes_14}.  %% version = 0
-
-{exports, [{f,2},{module_info,0},{module_info,1},{yes_14,0}]}.
-
-{attributes, []}.
-
-{labels, 12}.
-
-
-{function, yes_14, 0, 2}.
-  {label,1}.
-    {func_info,{atom,yes_14},{atom,yes_14},0}.
-  {label,2}.
-    {move,{atom,ok},{x,0}}.
-    return.
-
-
-{function, f, 2, 4}.
-  {label,3}.
-    {func_info,{atom,yes_14},{atom,f},2}.
-  {label,4}.
-    {allocate_heap,2,3,2}.
-    {move,{x,0},{y,1}}.
-    {put_tuple,2,{y,0}}.
-    {put,{atom,data}}.
-    {put,{x,1}}.
-    {call_ext,0,{extfunc,erlang,make_ref,0}}. % Ref in [x0]
-    {test_heap,4,1}.
-    {put_tuple,3,{x,1}}.
-    {put,{atom,request}}.
-    {put,{x,0}}.
-    {put,{y,0}}.
-    {move,{x,0},{y,0}}. % Ref in [x0,y0]
-    {move,{y,1},{x,0}}. % Ref in [y0]
-    {kill,{y,1}}.
-    send.
-    {move,{y,0},{x,0}}. % Ref in [x0,y0]
-    {move,{x,0},{y,1}}. % Ref in [x0,y0,y1]
-  {label,5}.
-    {loop_rec,{f,7},{x,0}}. % Ref in [y0,y1]
-    {test,is_tuple,{f,6},[{x,0}]}.
-    {test,test_arity,{f,6},[{x,0},2]}.
-    {get_tuple_element,{x,0},0,{x,1}}.
-    {get_tuple_element,{x,0},1,{x,2}}.
-    {test,is_eq_exact,{f,6},[{x,1},{atom,reply}]}.
-    {test,is_eq_exact,{f,6},[{x,2},{y,1}]}.
-    remove_message.
-    {move,{atom,ok},{x,0}}.
-    {deallocate,2}.
-    return.
-  {label,6}.
-    {loop_rec_end,{f,5}}.
-  {label,7}.
-    {wait,{f,5}}.
-
-
-{function, module_info, 0, 9}.
-  {label,8}.
-    {func_info,{atom,yes_14},{atom,module_info},0}.
-  {label,9}.
-    {move,{atom,yes_14},{x,0}}.
-    {call_ext_only,1,{extfunc,erlang,get_module_info,1}}.
-
-
-{function, module_info, 1, 11}.
-  {label,10}.
-    {func_info,{atom,yes_14},{atom,module_info},1}.
-  {label,11}.
-    {move,{x,0},{x,1}}.
-    {move,{atom,yes_14},{x,0}}.
-    {call_ext_only,2,{extfunc,erlang,get_module_info,2}}.
diff --git a/lib/compiler/test/receive_SUITE_data/ref_opt/yes_14.erl b/lib/compiler/test/receive_SUITE_data/ref_opt/yes_14.erl
new file mode 100644
index 0000000000..aa47c02af9
--- /dev/null
+++ b/lib/compiler/test/receive_SUITE_data/ref_opt/yes_14.erl
@@ -0,0 +1,27 @@
+-module(yes_14).
+-compile(export_all).
+
+?MODULE() ->
+    ok.
+
+do_call(Process, Request) ->
+    Mref = erlang:monitor(process, Process),
+    Process ! Request,
+    Local = case node(Process) of
+                Node when Node =:= node() -> true;
+                _Node -> false
+            end,
+    id(Local),
+    receive
+	{X,Y,Z} when Mref =/= X, Z =:= 42, Mref =:= Y ->
+	    error;
+	{X,Y,_} when Mref =/= X, Mref =:= Y ->
+	    error;
+	{Mref, Reply} ->
+	    erlang:demonitor(Mref, [flush]),
+	    {ok, Reply};
+	{'DOWN', Mref, _, _, _} ->
+	    error
+    end.
+
+id(I) -> I.
diff --git a/lib/compiler/test/regressions_SUITE.erl b/lib/compiler/test/regressions_SUITE.erl
index 9b0b9b0c38..39febf060f 100644
--- a/lib/compiler/test/regressions_SUITE.erl
+++ b/lib/compiler/test/regressions_SUITE.erl
@@ -23,7 +23,7 @@
 
 -export([all/0,groups/0,init_per_testcase/2,end_per_testcase/2,
          init_per_group/2,end_per_group/2,
-	 init_per_testcase/2,end_per_testcase/2,
+	 init_per_suite/1,end_per_suite/1,
          suite/0]).
 -export([maps/1]).
 
diff --git a/lib/compiler/test/test_lib.erl b/lib/compiler/test/test_lib.erl
index 8954a9f5fb..3348c6e9ea 100644
--- a/lib/compiler/test/test_lib.erl
+++ b/lib/compiler/test/test_lib.erl
@@ -22,7 +22,8 @@
 -include_lib("common_test/include/ct.hrl").
 -compile({no_auto_import,[binary_part/2]}).
 -export([id/1,recompile/1,parallel/0,uniq/0,opt_opts/1,get_data_dir/1,
-	 is_cloned_mod/1,smoke_disasm/1,p_run/2]).
+         is_cloned_mod/1,smoke_disasm/1,p_run/2,
+         highest_opcode/1]).
 
 %% Used by test case that override BIFs.
 -export([binary_part/2,binary/1]).
@@ -50,12 +51,8 @@ smoke_disasm(File) when is_list(File) ->
     Res = beam_disasm:file(File),
     {beam_file,_Mod} = {element(1, Res),element(2, Res)}.
 
-%% If we are running cover, we don't want to run test cases that
-%% invokes the compiler in parallel, as doing so would probably
-%% be slower than running them sequentially.
-
 parallel() ->
-    case test_server:is_cover() orelse erlang:system_info(schedulers) =:= 1 of
+    case erlang:system_info(schedulers) =:= 1 of
 	true -> [];
 	false -> [parallel]
     end.
@@ -70,18 +67,24 @@ uniq() ->
 opt_opts(Mod) ->
     Comp = Mod:module_info(compile),
     {options,Opts} = lists:keyfind(options, 1, Comp),
-    lists:filter(fun(no_copt) -> true;
-		    (no_postopt) -> true;
-		    (no_float_opt) -> true;
-		    (no_new_funs) -> true;
-		    (no_new_binaries) -> true;
-		    (no_new_apply) -> true;
-		    (no_gc_bifs) -> true;
-		    (no_stack_trimming) -> true;
-		    (debug_info) -> true;
-		    (inline) -> true;
-		    (_) -> false
-		 end, Opts).
+    lists:filter(fun
+                     (debug_info) -> true;
+                     (inline) -> true;
+                     (no_bsm3) -> true;
+                     (no_bsm_opt) -> true;
+                     (no_copt) -> true;
+                     (no_fun_opt) -> true;
+                     (no_module_opt) -> true;
+                     (no_postopt) -> true;
+                     (no_put_tuple2) -> true;
+                     (no_recv_opt) -> true;
+                     (no_share_opt) -> true;
+                     (no_ssa_float) -> true;
+                     (no_ssa_opt) -> true;
+                     (no_stack_trimming) -> true;
+                     (no_type_opt) -> true;
+                     (_) -> false
+                end, Opts).
 
 %% Some test suites gets cloned (e.g. to "record_SUITE" to
 %% "record_no_opt_SUITE"), but the data directory is not cloned.
@@ -91,37 +94,40 @@ get_data_dir(Config) ->
     Data0 = proplists:get_value(data_dir, Config),
     Opts = [{return,list}],
     Data1 = re:replace(Data0, "_no_opt_SUITE", "_SUITE", Opts),
-    Data = re:replace(Data1, "_post_opt_SUITE", "_SUITE", Opts),
-    re:replace(Data, "_inline_SUITE", "_SUITE", Opts).
+    Data2 = re:replace(Data1, "_post_opt_SUITE", "_SUITE", Opts),
+    Data3 = re:replace(Data2, "_inline_SUITE", "_SUITE", Opts),
+    Data4 = re:replace(Data3, "_r21_SUITE", "_SUITE", Opts),
+    Data = re:replace(Data4, "_no_module_opt_SUITE", "_SUITE", Opts),
+    re:replace(Data, "_no_ssa_opt_SUITE", "_SUITE", Opts).
 
 is_cloned_mod(Mod) ->
     is_cloned_mod_1(atom_to_list(Mod)).
 
 %% Test whether Mod is a cloned module.
 
-is_cloned_mod_1("no_opt_SUITE") -> true;
-is_cloned_mod_1("post_opt_SUITE") -> true;
-is_cloned_mod_1("inline_SUITE") -> true;
+is_cloned_mod_1("_no_opt_SUITE") -> true;
+is_cloned_mod_1("_no_ssa_opt_SUITE") -> true;
+is_cloned_mod_1("_post_opt_SUITE") -> true;
+is_cloned_mod_1("_inline_SUITE") -> true;
+is_cloned_mod_1("_21_SUITE") -> true;
+is_cloned_mod_1("_no_module_opt_SUITE") -> true;
 is_cloned_mod_1([_|T]) -> is_cloned_mod_1(T);
 is_cloned_mod_1([]) -> false.
 
+%% Return the highest opcode use in the BEAM module.
+
+highest_opcode(Beam) ->
+    {ok,{_Mod,[{"Code",Code}]}} = beam_lib:chunks(Beam, ["Code"]),
+    FormatNumber = 0,
+    <<16:32,FormatNumber:32,HighestOpcode:32,_/binary>> = Code,
+    HighestOpcode.
+
 %% p_run(fun(Data) -> ok|error, List) -> ok
 %%  Will fail the test case if there were any errors.
 
 p_run(Test, List) ->
     S = erlang:system_info(schedulers),
-    N = case test_server:is_cover() of
-	    false ->
-		S + 1;
-	    true ->
-		%% Cover is running. Using too many processes
-		%% could slow us down. Measurements on my computer
-		%% showed that using 4 parallel processes was
-		%% slightly faster than using 3. Using more than
-		%% 4 would not buy us much and could actually be
-		%% slower.
-		min(S, 4)
-	end,
+    N = S + 1,
     io:format("p_run: ~p parallel processes\n", [N]),
     p_run_loop(Test, List, N, [], 0, 0).
 
diff --git a/lib/compiler/test/trycatch_SUITE.erl b/lib/compiler/test/trycatch_SUITE.erl
index 8f9cd9ab1e..539f9d69fa 100644
--- a/lib/compiler/test/trycatch_SUITE.erl
+++ b/lib/compiler/test/trycatch_SUITE.erl
@@ -27,7 +27,8 @@
 	 nested_horrid/1,last_call_optimization/1,bool/1,
 	 plain_catch_coverage/1,andalso_orelse/1,get_in_try/1,
 	 hockey/1,handle_info/1,catch_in_catch/1,grab_bag/1,
-         stacktrace/1,nested_stacktrace/1,raise/1]).
+         stacktrace/1,nested_stacktrace/1,raise/1,
+         no_return_in_try_block/1]).
 
 -include_lib("common_test/include/ct.hrl").
 
@@ -43,7 +44,8 @@ groups() ->
        nested_after,nested_horrid,last_call_optimization,
        bool,plain_catch_coverage,andalso_orelse,get_in_try,
        hockey,handle_info,catch_in_catch,grab_bag,
-       stacktrace,nested_stacktrace,raise]}].
+       stacktrace,nested_stacktrace,raise,
+       no_return_in_try_block]}].
 
 
 init_per_suite(Config) ->
@@ -1287,5 +1289,26 @@ do_test_raise_4(Expr) ->
             erlang:raise(exit, {exception,C,E,Stk}, Stk)
     end.
 
+no_return_in_try_block(Config) when is_list(Config) ->
+    1.0 = no_return_in_try_block_1(0),
+    1.0 = no_return_in_try_block_1(0.0),
+
+    gurka = no_return_in_try_block_1(gurka),
+    [] = no_return_in_try_block_1([]),
+
+    ok.
+
+no_return_in_try_block_1(H) ->
+    try
+        Float = if
+                    is_number(H) -> float(H);
+                    true -> no_return()
+                end,
+        Float + 1
+    catch
+        throw:no_return -> H
+    end.
+
+no_return() -> throw(no_return).
 
 id(I) -> I.
diff --git a/lib/compiler/test/warnings_SUITE.erl b/lib/compiler/test/warnings_SUITE.erl
index 33d55996ad..70b7100451 100644
--- a/lib/compiler/test/warnings_SUITE.erl
+++ b/lib/compiler/test/warnings_SUITE.erl
@@ -42,7 +42,7 @@
 	 comprehensions/1,maps/1,maps_bin_opt_info/1,
          redundant_boolean_clauses/1,
 	 latin1_fallback/1,underscore/1,no_warnings/1,
-	 bit_syntax/1,inlining/1]).
+	 bit_syntax/1,inlining/1,tuple_calls/1]).
 
 init_per_testcase(_Case, Config) ->
     Config.
@@ -64,7 +64,8 @@ groups() ->
        bin_opt_info,bin_construction,comprehensions,maps,
        maps_bin_opt_info,
        redundant_boolean_clauses,latin1_fallback,
-       underscore,no_warnings,bit_syntax,inlining]}].
+       underscore,no_warnings,bit_syntax,inlining,
+       tuple_calls]}].
 
 init_per_suite(Config) ->
     test_lib:recompile(?MODULE),
@@ -239,19 +240,7 @@ guard(Config) when is_list(Config) ->
 	     {4,sys_core_fold,nomatch_guard},
 	     {6,sys_core_fold,no_clause_match},
 	     {6,sys_core_fold,nomatch_guard},
-	     {6,sys_core_fold,{eval_failure,badarg}},
-	     {8,sys_core_fold,no_clause_match},
-	     {8,sys_core_fold,nomatch_guard},
-	     {8,sys_core_fold,{eval_failure,badarg}},
-	     {9,sys_core_fold,no_clause_match},
-	     {9,sys_core_fold,nomatch_guard},
-	     {9,sys_core_fold,{eval_failure,badarg}},
-	     {10,sys_core_fold,no_clause_match},
-	     {10,sys_core_fold,nomatch_guard},
-	     {10,sys_core_fold,{eval_failure,badarg}},
-	     {11,sys_core_fold,no_clause_match},
-	     {11,sys_core_fold,nomatch_guard},
-	     {11,sys_core_fold,{eval_failure,badarg}}
+	     {6,sys_core_fold,{eval_failure,badarg}}
 	    ]}}],
     [] = run(Config, Ts),
 
@@ -522,25 +511,43 @@ bin_opt_info(Config) when is_list(Config) ->
 	         <<>> -> ok
              end.
 
+             %% We use a tail in a BIF instruction, remote call, function
+             %% return, and an optimizable tail call for better coverage.
+             t2(<<A,B,T/bytes>>) ->
+                 if
+                     A > B -> t2(T);
+                     A =< B -> T
+                 end;
+             t2(<<_,T/bytes>>) when byte_size(T) < 4 ->
+                 foo;
              t2(<<_,T/bytes>>) ->
-               split_binary(T, 4).
+                 split_binary(T, 4).
            ">>,
-    Ts1 = [{bsm1,
-	    Code,
-	    [bin_opt_info],
-	    {warnings,
-	     [{4,sys_core_bsm,orig_bin_var_used_in_guard},
-	      {5,beam_bsm,{no_bin_opt,{{t1,1},no_suitable_bs_start_match}}},
-	      {9,beam_bsm,{no_bin_opt,
-			   {binary_used_in,{extfunc,erlang,split_binary,2}}}} ]}}],
-    [] = run(Config, Ts1),
+
+    Ws = (catch run_test(Config, Code, [bin_opt_info])),
+
+    %% This is an inexact match since the pass reports exact instructions as
+    %% part of the warnings, which may include annotations that vary from run
+    %% to run.
+    {warnings,
+     [{5,beam_ssa_bsm,{unsuitable_call,
+                        {{b_local,{b_literal,t1},1},
+                         {used_before_match,
+                            {b_set,_,_,{bif,byte_size},[_]}}}}},
+      {5,beam_ssa_bsm,{binary_created,_,_}},
+      {11,beam_ssa_bsm,{binary_created,_,_}}, %% A =< B -> T
+      {13,beam_ssa_bsm,context_reused},       %% A > B -> t2(T);
+      {16,beam_ssa_bsm,{binary_created,_,_}}, %% when byte_size(T) < 4 ->
+      {19,beam_ssa_bsm,{remote_call,
+                         {b_remote,
+                          {b_literal,erlang},
+                           {b_literal,split_binary},2}}},
+      {19,beam_ssa_bsm,{binary_created,_,_}}  %% split_binary(T, 4)
+     ]} = Ws,
 
     %% For coverage: don't give the bin_opt_info option.
-    Ts2 = [{bsm2,
-	    Code,
-	    [],
-	    []}],
-    [] = run(Config, Ts2),
+    [] = (catch run_test(Config, Code, [])),
+
     ok.
 
 bin_construction(Config) when is_list(Config) ->
@@ -746,7 +753,7 @@ maps_bin_opt_info(Config) when is_list(Config) ->
                  M.
            ">>,
            [bin_opt_info],
-           {warnings,[{2,beam_bsm,bin_opt}]}}],
+           {warnings,[{3,beam_ssa_bsm,context_reused}]}}],
     [] = run(Config, Ts),
     ok.
 
@@ -952,6 +959,20 @@ inlining(Config) ->
     run(Config, Ts),
     ok.
 
+tuple_calls(Config) ->
+    %% Make sure that no spurious warnings are generated.
+    Ts = [{inlining_1,
+           <<"-compile(tuple_calls).
+              dispatch(X) ->
+                (list_to_atom(\"prefix_\" ++
+                atom_to_list(suffix))):doit(X).
+           ">>,
+           [],
+           []}
+	 ],
+    run(Config, Ts),
+    ok.
+
 %%%
 %%% End of test cases.
 %%%
@@ -969,7 +990,6 @@ run(Config, Tests) ->
         end,
     lists:foldl(F, [], Tests).
 
-
 %% Compiles a test module and returns the list of errors and warnings.
 
 run_test(Conf, Test0, Warnings) ->
diff --git a/lib/compiler/vsn.mk b/lib/compiler/vsn.mk
index 97179b7fc4..a523627384 100644
--- a/lib/compiler/vsn.mk
+++ b/lib/compiler/vsn.mk
@@ -1 +1 @@
-COMPILER_VSN = 7.3
+COMPILER_VSN = 7.3.2
diff --git a/lib/configure.in.src b/lib/configure.in.src
deleted file mode 100644
index d507a5c0dd..0000000000
--- a/lib/configure.in.src
+++ /dev/null
@@ -1,62 +0,0 @@
-dnl
-dnl %CopyrightBegin%
-dnl
-dnl Copyright Ericsson AB 1999-2016. All Rights Reserved.
-dnl
-dnl Licensed under the Apache License, Version 2.0 (the "License");
-dnl you may not use this file except in compliance with the License.
-dnl You may obtain a copy of the License at
-dnl
-dnl     http://www.apache.org/licenses/LICENSE-2.0
-dnl
-dnl Unless required by applicable law or agreed to in writing, software
-dnl distributed under the License is distributed on an "AS IS" BASIS,
-dnl WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-dnl See the License for the specific language governing permissions and
-dnl limitations under the License.
-dnl
-dnl %CopyrightEnd%
-dnl
-
-dnl Turn off caching
-define([AC_CACHE_LOAD], )dnl
-define([AC_CACHE_SAVE], )dnl
-
-dnl Process this file with autoconf to produce a configure script.
-AC_INIT
-
-dnl
-dnl This is just to run configure in all applications that need it.
-dnl
-
-if test -z "$ERL_TOP" || test ! -d $ERL_TOP ; then
-  AC_MSG_ERROR(You need to set the environment variable ERL_TOP!)
-fi
-erl_top=${ERL_TOP}
-AC_CONFIG_AUX_DIRS($erl_top/erts/autoconf)
-
-AC_ARG_ENABLE(bootstrap-only,
-[  --enable-bootstrap-only enable bootstrap only configuration],
-[ if test "X$enableval" = "Xyes"; then
-     bootstrap_only=yes
-  else
-     bootstrap_only=no  
-  fi	
-],
-bootstrap_only=no)
-
-# Multiple versions of autoconf generates code that
-# don't work on all platforms (e.g. SunOS 5.8) if
-# sub directories are soft links. Internally at Ericsson
-# some OTP application directories are soft links.
-# An added "/." solves this problem.
-
-@BOOTSTRAP_CONFIGURE_APPS@
-
-if test $bootstrap_only = no; then
-
-@NON_BOOTSTRAP_CONFIGURE_APPS@
-
-fi
-
-AC_OUTPUT
diff --git a/lib/crypto/c_src/Makefile.in b/lib/crypto/c_src/Makefile.in
index 31124ba477..b6a65d7488 100644
--- a/lib/crypto/c_src/Makefile.in
+++ b/lib/crypto/c_src/Makefile.in
@@ -19,7 +19,6 @@
 #
 include $(ERL_TOP)/make/target.mk
 include $(ERL_TOP)/make/$(TARGET)/otp.mk
-include $(ERL_TOP)/make/$(TARGET)/otp_ded.mk
 
 # ----------------------------------------------------
 # Application version
@@ -31,23 +30,20 @@ VSN=$(CRYPTO_VSN)
 # The following variables differ between systems.
 # Set by configure.
 # ----------------------------------------------------
-CC = $(DED_CC)
-LD = $(DED_LD)
+CC = @DED_CC@
+LD = @DED_LD@
 SHELL = /bin/sh
-LIBS = $(DED_LIBS)
-LDFLAGS += $(DED_LDFLAGS)
-CFLAGS = $(DED_CFLAGS)
+LIBS = @DED_LIBS@
+LDFLAGS += @DED_LDFLAGS@
+CFLAGS = @DED_CFLAGS@ @SSL_FLAGS@
 
 # From erts/configure
 SSL_LIBDIR = @SSL_LIBDIR@
 SSL_INCLUDE = @SSL_INCLUDE@
 SSL_CRYPTO_LIBNAME = @SSL_CRYPTO_LIBNAME@
 SSL_SSL_LIBNAME = @SSL_SSL_LIBNAME@
-SSL_FLAGS = @SSL_FLAGS@
 
-
-INCLUDES = $(SSL_INCLUDE) $(DED_INCLUDES)
-CFLAGS += $(SSL_FLAGS)
+INCLUDES = $(SSL_INCLUDE) @DED_INCLUDE@
 
 ifeq ($(TYPE),debug)
 TYPEMARKER = .debug
@@ -70,7 +66,38 @@ RELSYSDIR = $(RELEASE_PATH)/lib/crypto-$(VSN)
 # ----------------------------------------------------
 # Misc Macros
 # ----------------------------------------------------
-CRYPTO_OBJS = $(OBJDIR)/crypto$(TYPEMARKER).o
+
+PRIVDIR = ../priv
+OBJDIR = $(PRIVDIR)/obj/$(TARGET)
+LIBDIR = $(PRIVDIR)/lib/$(TARGET)
+
+CRYPTO_OBJS = $(OBJDIR)/crypto$(TYPEMARKER).o \
+	$(OBJDIR)/aead$(TYPEMARKER).o \
+	$(OBJDIR)/aes$(TYPEMARKER).o \
+	$(OBJDIR)/algorithms$(TYPEMARKER).o \
+	$(OBJDIR)/api_ng$(TYPEMARKER).o \
+	$(OBJDIR)/atoms$(TYPEMARKER).o \
+	$(OBJDIR)/bn$(TYPEMARKER).o \
+	$(OBJDIR)/cipher$(TYPEMARKER).o \
+	$(OBJDIR)/cmac$(TYPEMARKER).o \
+	$(OBJDIR)/dh$(TYPEMARKER).o \
+	$(OBJDIR)/digest$(TYPEMARKER).o \
+	$(OBJDIR)/dss$(TYPEMARKER).o \
+	$(OBJDIR)/ec$(TYPEMARKER).o \
+	$(OBJDIR)/ecdh$(TYPEMARKER).o \
+	$(OBJDIR)/eddsa$(TYPEMARKER).o \
+	$(OBJDIR)/engine$(TYPEMARKER).o \
+	$(OBJDIR)/evp$(TYPEMARKER).o \
+	$(OBJDIR)/fips$(TYPEMARKER).o \
+	$(OBJDIR)/hash$(TYPEMARKER).o \
+	$(OBJDIR)/hmac$(TYPEMARKER).o \
+	$(OBJDIR)/info$(TYPEMARKER).o \
+	$(OBJDIR)/math$(TYPEMARKER).o \
+	$(OBJDIR)/pkey$(TYPEMARKER).o \
+	$(OBJDIR)/poly1305$(TYPEMARKER).o \
+	$(OBJDIR)/rand$(TYPEMARKER).o \
+	$(OBJDIR)/rsa$(TYPEMARKER).o \
+	$(OBJDIR)/srp$(TYPEMARKER).o
 CALLBACK_OBJS = $(OBJDIR)/crypto_callback$(TYPEMARKER).o
 NIF_MAKEFILE = $(PRIVDIR)/Makefile
 CRYPTO_STATIC_OBJS = $(OBJDIR)/crypto_static$(TYPEMARKER).o\
@@ -80,19 +107,10 @@ NIF_ARCHIVE = $(LIBDIR)/crypto$(TYPEMARKER).a
 
 TEST_ENGINE_OBJS = $(OBJDIR)/otp_test_engine$(TYPEMARKER).o
 
-ifeq ($(findstring win32,$(TARGET)), win32)
-NIF_LIB = $(LIBDIR)/crypto$(TYPEMARKER).dll
-CALLBACK_LIB = $(LIBDIR)/crypto_callback$(TYPEMARKER).dll
-TEST_ENGINE_LIB = $(LIBDIR)/otp_test_engine$(TYPEMARKER).dll
-else
-NIF_LIB = $(LIBDIR)/crypto$(TYPEMARKER).so
-CALLBACK_LIB = $(LIBDIR)/crypto_callback$(TYPEMARKER).so
-TEST_ENGINE_LIB = $(LIBDIR)/otp_test_engine$(TYPEMARKER).so
-endif
+NIF_LIB = $(LIBDIR)/crypto$(TYPEMARKER).@DED_EXT@
+CALLBACK_LIB = $(LIBDIR)/crypto_callback$(TYPEMARKER).@DED_EXT@
+TEST_ENGINE_LIB = $(LIBDIR)/otp_test_engine$(TYPEMARKER).@DED_EXT@
 
-ifeq ($(HOST_OS),)
-HOST_OS := $(shell $(ERL_TOP)/erts/autoconf/config.guess)
-endif
 DYNAMIC_CRYPTO_LIB=@SSL_DYNAMIC_ONLY@
 
 ifeq ($(DYNAMIC_CRYPTO_LIB),yes)
@@ -125,7 +143,7 @@ RANLIB=true
 endif
 
 ALL_CFLAGS = $(TYPE_FLAGS) $(EXTRA_FLAGS) $(INCLUDES)
-ALL_STATIC_CFLAGS = $(DED_STATIC_CFLAGS) $(INCLUDES)
+ALL_STATIC_CFLAGS = @DED_STATIC_CFLAGS@ $(INCLUDES)
 
 # ----------------------------------------------------
 # Targets
@@ -180,32 +198,21 @@ $(LIBDIR)/crypto_callback$(TYPEMARKER).dll: $(CALLBACK_OBJS)
 endif
 
 
-clean:
-ifeq ($(findstring win32,$(TARGET)), win32)
-	rm -f $(LIBDIR)/crypto.dll
-	rm -f $(LIBDIR)/crypto.debug.dll
-	rm -f $(LIBDIR)/crypto_callback.dll
-	rm -f $(LIBDIR)/crypto_callback.debug.dll
-	rm -f $(LIBDIR)/otp_test_engine.dll
-else
-	rm -f $(LIBDIR)/crypto.so
-	rm -f $(LIBDIR)/crypto.debug.so
-	rm -f $(LIBDIR)/crypto.valgrind.so
-	rm -f $(LIBDIR)/crypto_callback.so
-	rm -f $(LIBDIR)/crypto_callback.debug.so
-	rm -f $(LIBDIR)/crypto_callback.valgrind.so
-	rm -f $(LIBDIR)/otp_test_engine.so
-endif
-	rm -f $(OBJDIR)/crypto.o
-	rm -f $(OBJDIR)/crypto_static.o
-	rm -f $(OBJDIR)/crypto.debug.o
-	rm -f $(OBJDIR)/crypto_static.debug.o
-	rm -f $(OBJDIR)/crypto.valgrind.o
-	rm -f $(OBJDIR)/crypto_static.valgrind.o
-	rm -f $(OBJDIR)/crypto_callback.o
-	rm -f $(OBJDIR)/crypto_callback.debug.o
-	rm -f $(OBJDIR)/crypto_callback.valgrind.o
-	rm -f $(OBJDIR)/otp_test_engine.o
+CLEAN_OBJS_RAW = $(CRYPTO_OBJS) $(CALLBACK_OBJS) $(CRYPTO_STATIC_OBJS) $(TEST_ENGINE_OBJS)
+CLEAN_OBJS_O = $(patsubst %.debug.o,%.o,$(CLEAN_OBJS_RAW:.valgrind.o=.o))
+
+CLEAN_LIBS_RAW = $(NIF_LIB) $(CALLBACK_LIB) $(TEST_ENGINE_LIB)
+CLEAN_LIBS_SO = $(patsubst %.debug.@DED_EXT@,%.@DED_EXT@,$(CLEAN_LIBS_RAW:.valgrind.@DED_EXT@=.@DED_EXT@))
+
+clean_dynamic_libs:
+	rm -f $(CLEAN_LIBS_SO)
+	rm -f $(foreach T,.valgrind.@DED_EXT@ .debug.@DED_EXT@,$(CLEAN_LIBS_SO:.@DED_EXT@=$T))
+
+clean_objs:
+	rm -f $(CLEAN_OBJS_O)
+	rm -f $(foreach T,.valgrind.o .debug.o,$(CLEAN_OBJS_O:.o=$T))
+
+clean: clean_objs clean_dynamic_libs
 	rm -f core *~
 
 docs:
diff --git a/lib/crypto/c_src/aead.c b/lib/crypto/c_src/aead.c
new file mode 100644
index 0000000000..ab0e609130
--- /dev/null
+++ b/lib/crypto/c_src/aead.c
@@ -0,0 +1,182 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#include "aead.h"
+#include "aes.h"
+#include "cipher.h"
+
+
+
+ERL_NIF_TERM aead_cipher(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/*
+   (Type,Key,Iv,AAD,In,TagLen,true)
+   (Type,Key,Iv,AAD,In,Tag,false)
+ */
+#if defined(HAVE_AEAD)
+    const struct cipher_type_t *cipherp;
+    EVP_CIPHER_CTX *ctx = NULL;
+    const EVP_CIPHER *cipher = NULL;
+    ErlNifBinary key, iv, aad, in, tag;
+    unsigned int tag_len;
+    unsigned char *outp, *tagp, *tag_data;
+    ERL_NIF_TERM type, out, out_tag, ret, encflg_arg;
+    int len, encflg;
+
+    encflg_arg = argv[6];
+
+    /* Fetch the flag telling if we are going to encrypt (=true) or decrypt (=false) */
+    if (encflg_arg == atom_true)
+        encflg = 1;
+    else if (encflg_arg == atom_false)
+        encflg = 0;
+    else if (encflg_arg == atom_undefined)
+        /* For compat funcs in crypto.erl */
+        encflg = -1;
+    else
+        {
+            ret = EXCP_BADARG(env, "Bad enc flag");
+            goto done;
+        }
+
+    type = argv[0];
+
+    if (!enif_is_atom(env, type))
+        {ret = EXCP_BADARG(env, "non-atom cipher type"); goto done;}
+    if (!enif_inspect_iolist_as_binary(env, argv[1], &key))
+        {ret = EXCP_BADARG(env, "non-binary key"); goto done;}
+    if (!enif_inspect_iolist_as_binary(env, argv[2], &iv))
+        {ret = EXCP_BADARG(env, "non-binary iv"); goto done;}
+    if (!enif_inspect_iolist_as_binary(env, argv[3], &in))
+        {ret = EXCP_BADARG(env, "non-binary text"); goto done;}
+    if (!enif_inspect_iolist_as_binary(env, argv[4], &aad))
+        {ret = EXCP_BADARG(env, "non-binary AAD"); goto done;}
+
+    if (encflg) {
+        if (!enif_get_uint(env, argv[5], &tag_len))
+            {ret = EXCP_BADARG(env, "Bad Tag length"); goto done;}
+        tag_data = NULL;
+    } else {
+        if (!enif_inspect_iolist_as_binary(env, argv[5], &tag))
+            {ret = EXCP_BADARG(env, "non-binary Tag"); goto done;}
+        tag_len = tag.size;
+        tag_data = tag.data;
+    }
+
+    if (tag_len > INT_MAX
+        || key.size > INT_MAX
+        || iv.size > INT_MAX
+        || in.size > INT_MAX
+        || aad.size > INT_MAX)
+        {ret = EXCP_BADARG(env, "binary too long"); goto done;}
+
+    if ((cipherp = get_cipher_type(type, key.size)) == NULL)
+        {ret = EXCP_BADARG(env, "Unknown cipher"); goto done;}
+    if (cipherp->flags & NON_EVP_CIPHER)
+        {ret = EXCP_BADARG(env, "Bad cipher"); goto done;}
+    if (! (cipherp->flags & AEAD_CIPHER) )
+        {ret = EXCP_BADARG(env, "Not aead cipher"); goto done;}
+    if ((cipher = cipherp->cipher.p) == NULL)
+        {ret = EXCP_NOTSUP(env, "Cipher not supported in this libcrypto version"); goto done;}
+
+#if defined(HAVE_GCM_EVP_DECRYPT_BUG)
+    if ( !encflg && (cipherp->flags & GCM_MODE))
+        return aes_gcm_decrypt_NO_EVP(env, argc, argv);
+#endif
+
+    if ((ctx = EVP_CIPHER_CTX_new()) == NULL)
+        {ret = EXCP_ERROR(env, "Can't allocate ctx"); goto done;}
+
+    if (EVP_CipherInit_ex(ctx, cipher, NULL, NULL, NULL, encflg) != 1)
+        {ret = EXCP_ERROR(env, "CipherInit failed"); goto done;}
+    if (EVP_CIPHER_CTX_ctrl(ctx, cipherp->extra.aead.ctx_ctrl_set_ivlen, (int)iv.size, NULL) != 1)
+        {ret = EXCP_BADARG(env, "Bad IV length"); goto done;}
+
+#if defined(HAVE_CCM)
+    if (cipherp->flags & CCM_MODE) {
+        if (EVP_CIPHER_CTX_ctrl(ctx, cipherp->extra.aead.ctx_ctrl_set_tag, (int)tag_len, tag_data) != 1)
+            {ret = EXCP_BADARG(env, "Can't set tag"); goto done;}
+        if (EVP_CipherInit_ex(ctx, NULL, NULL, key.data, iv.data, -1) != 1)
+            {ret = EXCP_BADARG(env, "Can't set key or iv"); goto done;}
+        if (EVP_CipherUpdate(ctx, NULL, &len, NULL, (int)in.size) != 1)
+            {ret = EXCP_BADARG(env, "Can't set text size"); goto done;}
+    } else
+#endif
+        {
+            if (EVP_CipherInit_ex(ctx, NULL, NULL, key.data, iv.data, -1) != 1)
+                {ret = EXCP_BADARG(env, "Can't set key or iv"); goto done;}
+        }
+
+    if (EVP_CipherUpdate(ctx, NULL, &len, aad.data, (int)aad.size) != 1)
+        {ret = EXCP_BADARG(env, "Can't set AAD"); goto done;}
+
+    if ((outp = enif_make_new_binary(env, in.size, &out)) == NULL)
+        {ret = EXCP_ERROR(env, "Can't make 'Out' binary"); goto done;}
+
+    if (EVP_CipherUpdate(ctx, outp, &len, in.data, (int)in.size) != 1)
+        {
+            if (encflg)
+                ret = EXCP_BADARG(env, "Can't set in-text");
+            else
+                /* Decrypt error */
+                ret = atom_error;
+            goto done;
+        }
+
+    if (encflg)
+        {
+            if (EVP_CipherFinal_ex(ctx, outp/*+len*/, &len) != 1)
+                {ret = EXCP_ERROR(env, "Encrypt error"); goto done;}
+
+            if ((tagp = enif_make_new_binary(env, tag_len, &out_tag)) == NULL)
+                {ret = EXCP_ERROR(env, "Can't make 'Out' binary"); goto done;}
+
+            if (EVP_CIPHER_CTX_ctrl(ctx, cipherp->extra.aead.ctx_ctrl_get_tag, (int)tag_len, tagp) != 1)
+                {ret = EXCP_ERROR(env, "Can't get Tag"); goto done;}
+
+            ret = enif_make_tuple2(env, out, out_tag);
+        }
+    else
+        {
+#if defined(HAVE_GCM)
+            if (cipherp->flags & GCM_MODE) {
+                if (EVP_CIPHER_CTX_ctrl(ctx, cipherp->extra.aead.ctx_ctrl_set_tag, (int)tag_len, tag.data) != 1)
+                    /* Decrypt error */
+                    {ret = atom_error; goto done;}
+                if (EVP_DecryptFinal_ex(ctx, outp+len, &len) != 1)
+                    /* Decrypt error */
+                    {ret = atom_error; goto done;}
+            }
+#endif
+            ret = out;
+        }
+
+    CONSUME_REDS(env, in);
+
+done:
+    if (ctx)
+        EVP_CIPHER_CTX_free(ctx);
+    return ret;
+
+#else
+    return EXCP_NOTSUP(env, "Unsupported Cipher");
+#endif
+}
+
+
diff --git a/lib/crypto/c_src/aead.h b/lib/crypto/c_src/aead.h
new file mode 100644
index 0000000000..2ec7a8a930
--- /dev/null
+++ b/lib/crypto/c_src/aead.h
@@ -0,0 +1,28 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifndef E_AEAD_H__
+#define E_AEAD_H__ 1
+
+#include "common.h"
+
+ERL_NIF_TERM aead_cipher(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+
+#endif /* E_AEAD_H__ */
diff --git a/lib/crypto/c_src/aes.c b/lib/crypto/c_src/aes.c
new file mode 100644
index 0000000000..4b01e629f9
--- /dev/null
+++ b/lib/crypto/c_src/aes.c
@@ -0,0 +1,302 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#include "aes.h"
+#include "cipher.h"
+
+ERL_NIF_TERM aes_cfb_8_crypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Key, IVec, Data, IsEncrypt) */
+     ErlNifBinary key, ivec, text;
+     AES_KEY aes_key;
+     unsigned char ivec_clone[16]; /* writable copy */
+     int new_ivlen = 0;
+     ERL_NIF_TERM ret;
+     unsigned char *outp;
+
+     CHECK_NO_FIPS_MODE();
+
+     ASSERT(argc == 4);
+
+     if (!enif_inspect_iolist_as_binary(env, argv[0], &key))
+         goto bad_arg;
+     if (key.size != 16 && key.size != 24 && key.size != 32)
+         goto bad_arg;
+     if (!enif_inspect_binary(env, argv[1], &ivec))
+         goto bad_arg;
+     if (ivec.size != 16)
+         goto bad_arg;
+     if (!enif_inspect_iolist_as_binary(env, argv[2], &text))
+         goto bad_arg;
+
+     memcpy(ivec_clone, ivec.data, 16);
+
+     /* NOTE: This function returns 0 on success unlike most OpenSSL functions */
+     if (AES_set_encrypt_key(key.data, (int)key.size * 8, &aes_key) != 0)
+         goto err;
+     if ((outp = enif_make_new_binary(env, text.size, &ret)) == NULL)
+         goto err;
+     AES_cfb8_encrypt((unsigned char *) text.data,
+                      outp,
+                      text.size, &aes_key, ivec_clone, &new_ivlen,
+                      (argv[3] == atom_true));
+     CONSUME_REDS(env,text);
+     return ret;
+
+ bad_arg:
+ err:
+     return enif_make_badarg(env);
+}
+
+ERL_NIF_TERM aes_cfb_128_crypt_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Key, IVec, Data, IsEncrypt) */
+    ErlNifBinary key, ivec, text;
+    AES_KEY aes_key;
+    unsigned char ivec_clone[16]; /* writable copy */
+    int new_ivlen = 0;
+    ERL_NIF_TERM ret;
+    unsigned char *outp;
+
+    ASSERT(argc == 4);
+
+    if (!enif_inspect_iolist_as_binary(env, argv[0], &key))
+        goto bad_arg;
+    if (key.size != 16 && key.size != 24 && key.size != 32)
+        goto bad_arg;
+    if (!enif_inspect_binary(env, argv[1], &ivec))
+        goto bad_arg;
+    if (ivec.size != 16)
+        goto bad_arg;
+    if (!enif_inspect_iolist_as_binary(env, argv[2], &text))
+        goto bad_arg;
+
+    memcpy(ivec_clone, ivec.data, 16);
+
+    /* NOTE: This function returns 0 on success unlike most OpenSSL functions */
+    if (AES_set_encrypt_key(key.data, (int)key.size * 8, &aes_key) != 0)
+        goto err;
+
+    if ((outp = enif_make_new_binary(env, text.size, &ret)) == NULL)
+        goto err;
+    AES_cfb128_encrypt((unsigned char *) text.data,
+                       outp,
+                       text.size, &aes_key, ivec_clone, &new_ivlen,
+                       (argv[3] == atom_true));
+    CONSUME_REDS(env,text);
+    return ret;
+
+ bad_arg:
+ err:
+    return enif_make_badarg(env);
+}
+
+ERL_NIF_TERM aes_ige_crypt_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Key, IVec, Data, IsEncrypt) */
+#ifdef HAVE_AES_IGE
+    ErlNifBinary key_bin, ivec_bin, data_bin;
+    AES_KEY aes_key;
+    unsigned char ivec[32];
+    int type;
+    unsigned char* ret_ptr;
+    ERL_NIF_TERM ret;
+
+    CHECK_NO_FIPS_MODE();
+
+    ASSERT(argc == 4);
+
+    if (!enif_inspect_iolist_as_binary(env, argv[0], &key_bin))
+        goto bad_arg;
+    if (key_bin.size != 16 && key_bin.size != 32)
+        goto bad_arg;
+    if (!enif_inspect_binary(env, argv[1], &ivec_bin))
+        goto bad_arg;
+    if (ivec_bin.size != 32)
+        goto bad_arg;
+    if (!enif_inspect_iolist_as_binary(env, argv[2], &data_bin))
+        goto bad_arg;
+    if (data_bin.size % 16 != 0)
+        goto bad_arg;
+
+    if (argv[3] == atom_true) {
+       type = AES_ENCRYPT;
+       /* NOTE: This function returns 0 on success unlike most OpenSSL functions */
+       if (AES_set_encrypt_key(key_bin.data, (int)key_bin.size * 8, &aes_key) != 0)
+           goto err;
+    }
+    else {
+       type = AES_DECRYPT;
+       /* NOTE: This function returns 0 on success unlike most OpenSSL functions */
+       if (AES_set_decrypt_key(key_bin.data, (int)key_bin.size * 8, &aes_key) != 0)
+           goto err;
+    }
+
+    if ((ret_ptr = enif_make_new_binary(env, data_bin.size, &ret)) == NULL)
+        goto err;
+
+    memcpy(ivec, ivec_bin.data, 32); /* writable copy */
+
+    AES_ige_encrypt(data_bin.data, ret_ptr, data_bin.size, &aes_key, ivec, type);
+
+    CONSUME_REDS(env,data_bin);
+    return ret;
+
+ bad_arg:
+ err:
+    return enif_make_badarg(env);
+
+#else
+    return atom_notsup;
+#endif
+}
+
+
+#if !defined(HAVE_EVP_AES_CTR)
+ERL_NIF_TERM aes_ctr_stream_encrypt_compat(ErlNifEnv* env, const ERL_NIF_TERM state_arg, const ERL_NIF_TERM data_arg)
+{/* ({Key, IVec, ECount, Num}, Data) */
+    ErlNifBinary key_bin, ivec_bin, text_bin, ecount_bin;
+    AES_KEY aes_key;
+    unsigned int num;
+    ERL_NIF_TERM ret, num2_term, cipher_term, ivec2_term, ecount2_term, new_state_term;
+    int state_arity;
+    const ERL_NIF_TERM *state_term;
+    unsigned char * ivec2_buf;
+    unsigned char * ecount2_buf;
+    unsigned char *outp;
+
+    if (!enif_get_tuple(env, state_arg, &state_arity, &state_term))
+        goto bad_arg;
+    if (state_arity != 4)
+        goto bad_arg;
+    if (!enif_inspect_iolist_as_binary(env, state_term[0], &key_bin))
+        goto bad_arg;
+    if (key_bin.size > INT_MAX / 8)
+        goto bad_arg;
+    if (!enif_inspect_binary(env, state_term[1], &ivec_bin))
+        goto bad_arg;
+    if (ivec_bin.size != 16)
+        goto bad_arg;
+    if (!enif_inspect_binary(env, state_term[2], &ecount_bin))
+        goto bad_arg;
+    if (ecount_bin.size != AES_BLOCK_SIZE)
+        goto bad_arg;
+    if (!enif_get_uint(env, state_term[3], &num))
+        goto bad_arg;
+    if (!enif_inspect_iolist_as_binary(env, data_arg, &text_bin))
+        goto bad_arg;
+
+    /* NOTE: This function returns 0 on success unlike most OpenSSL functions */
+    if (AES_set_encrypt_key(key_bin.data, (int)key_bin.size * 8, &aes_key) != 0)
+        goto bad_arg;
+
+    if ((ivec2_buf = enif_make_new_binary(env, ivec_bin.size, &ivec2_term)) == NULL)
+        goto err;
+    if ((ecount2_buf = enif_make_new_binary(env, ecount_bin.size, &ecount2_term)) == NULL)
+        goto err;
+
+    memcpy(ivec2_buf, ivec_bin.data, 16);
+    memcpy(ecount2_buf, ecount_bin.data, ecount_bin.size);
+
+    if ((outp = enif_make_new_binary(env, text_bin.size, &cipher_term)) == NULL)
+        goto err;
+
+    AES_ctr128_encrypt((unsigned char *) text_bin.data,
+                       outp,
+		       text_bin.size, &aes_key, ivec2_buf, ecount2_buf, &num);
+
+    num2_term = enif_make_uint(env, num);
+    new_state_term = enif_make_tuple4(env, state_term[0], ivec2_term, ecount2_term, num2_term);
+    ret = enif_make_tuple2(env, new_state_term, cipher_term);
+    CONSUME_REDS(env,text_bin);
+    return ret;
+
+ bad_arg:
+ err:
+    return enif_make_badarg(env);
+}
+#endif /* !HAVE_EVP_AES_CTR */
+
+#ifdef HAVE_GCM_EVP_DECRYPT_BUG
+ERL_NIF_TERM aes_gcm_decrypt_NO_EVP(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Type,Key,Iv,AAD,In,Tag) */
+    GCM128_CONTEXT *ctx = NULL;
+    ErlNifBinary key, iv, aad, in, tag;
+    AES_KEY aes_key;
+    unsigned char *outp;
+    ERL_NIF_TERM out, ret;
+
+    ASSERT(argc == 6);
+
+    if (!enif_inspect_iolist_as_binary(env, argv[1], &key))
+        goto bad_arg;
+    if (key.size > INT_MAX / 8)
+        goto bad_arg;
+    if (!enif_inspect_binary(env, argv[2], &iv))
+        goto bad_arg;
+    if (iv.size == 0)
+        goto bad_arg;
+    if (!enif_inspect_iolist_as_binary(env, argv[3], &aad))
+        goto bad_arg;
+    if (!enif_inspect_iolist_as_binary(env, argv[4], &in))
+        goto bad_arg;
+    if (!enif_inspect_iolist_as_binary(env, argv[5], &tag))
+        goto bad_arg;
+
+    /* NOTE: This function returns 0 on success unlike most OpenSSL functions */
+    if (AES_set_encrypt_key(key.data, (int)key.size * 8, &aes_key) != 0)
+        goto bad_arg;
+
+    if ((ctx = CRYPTO_gcm128_new(&aes_key, (block128_f)AES_encrypt)) == NULL)
+        goto err;
+
+    CRYPTO_gcm128_setiv(ctx, iv.data, iv.size);
+
+    /* NOTE: This function returns 0 on success unlike most OpenSSL functions */
+    if (CRYPTO_gcm128_aad(ctx, aad.data, aad.size) != 0)
+        goto err;
+
+    if ((outp = enif_make_new_binary(env, in.size, &out)) == NULL)
+        goto err;
+
+    /* NOTE: This function returns 0 on success unlike most OpenSSL functions */
+    if (CRYPTO_gcm128_decrypt(ctx, in.data, outp, in.size) != 0)
+        goto err;
+
+    /* calculate and check the tag */
+    /* NOTE: This function returns 0 on success unlike most OpenSSL functions */
+    if (CRYPTO_gcm128_finish(ctx, tag.data, tag.size) != 0)
+        goto err;
+
+    CONSUME_REDS(env, in);
+    ret = out;
+    goto done;
+
+ bad_arg:
+    ret = enif_make_badarg(env);
+    goto done;
+
+ err:
+    ret = atom_error;
+
+ done:
+    if (ctx)
+        CRYPTO_gcm128_release(ctx);
+    return ret;
+}
+#endif /* HAVE_GCM_EVP_DECRYPT_BUG */
+
diff --git a/lib/crypto/c_src/aes.h b/lib/crypto/c_src/aes.h
new file mode 100644
index 0000000000..c0b2b91f8d
--- /dev/null
+++ b/lib/crypto/c_src/aes.h
@@ -0,0 +1,38 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifndef E_AES_H__
+#define E_AES_H__ 1
+
+#include "common.h"
+
+ERL_NIF_TERM aes_cfb_8_crypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM aes_cfb_128_crypt_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM aes_ige_crypt_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+
+#if !defined(HAVE_EVP_AES_CTR)
+ERL_NIF_TERM aes_ctr_stream_encrypt_compat(ErlNifEnv* env, const ERL_NIF_TERM state_arg, const ERL_NIF_TERM data_arg);
+#endif
+
+#ifdef HAVE_GCM_EVP_DECRYPT_BUG
+ERL_NIF_TERM aes_gcm_decrypt_NO_EVP(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+#endif
+
+#endif /* E_AES_H__ */
diff --git a/lib/crypto/c_src/algorithms.c b/lib/crypto/c_src/algorithms.c
new file mode 100644
index 0000000000..1d45ed9df2
--- /dev/null
+++ b/lib/crypto/c_src/algorithms.c
@@ -0,0 +1,279 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#include "algorithms.h"
+#include "cipher.h"
+
+static unsigned int algo_hash_cnt, algo_hash_fips_cnt;
+static ERL_NIF_TERM algo_hash[14];   /* increase when extending the list */
+static unsigned int algo_pubkey_cnt, algo_pubkey_fips_cnt;
+static ERL_NIF_TERM algo_pubkey[12]; /* increase when extending the list */
+static unsigned int algo_mac_cnt, algo_mac_fips_cnt;
+static ERL_NIF_TERM algo_mac[3]; /* increase when extending the list */
+static unsigned int algo_curve_cnt, algo_curve_fips_cnt;
+static ERL_NIF_TERM algo_curve[89]; /* increase when extending the list */
+static unsigned int algo_rsa_opts_cnt, algo_rsa_opts_fips_cnt;
+static ERL_NIF_TERM algo_rsa_opts[11]; /* increase when extending the list */
+
+void init_algorithms_types(ErlNifEnv* env)
+{
+    // Validated algorithms first
+    algo_hash_cnt = 0;
+    algo_hash[algo_hash_cnt++] = atom_sha;
+#ifdef HAVE_SHA224
+    algo_hash[algo_hash_cnt++] = enif_make_atom(env, "sha224");
+#endif
+#ifdef HAVE_SHA256
+    algo_hash[algo_hash_cnt++] = enif_make_atom(env, "sha256");
+#endif
+#ifdef HAVE_SHA384
+    algo_hash[algo_hash_cnt++] = enif_make_atom(env, "sha384");
+#endif
+#ifdef HAVE_SHA512
+    algo_hash[algo_hash_cnt++] = enif_make_atom(env, "sha512");
+#endif
+#ifdef HAVE_SHA3_224
+    algo_hash[algo_hash_cnt++] = enif_make_atom(env, "sha3_224");
+#endif
+#ifdef HAVE_SHA3_256
+    algo_hash[algo_hash_cnt++] = enif_make_atom(env, "sha3_256");
+#endif
+#ifdef HAVE_SHA3_384
+    algo_hash[algo_hash_cnt++] = enif_make_atom(env, "sha3_384");
+#endif
+#ifdef HAVE_SHA3_512
+    algo_hash[algo_hash_cnt++] = enif_make_atom(env, "sha3_512");
+#endif
+#ifdef HAVE_BLAKE2
+    algo_hash[algo_hash_cnt++] = enif_make_atom(env, "blake2b");
+    algo_hash[algo_hash_cnt++] = enif_make_atom(env, "blake2s");
+#endif
+
+    // Non-validated algorithms follow
+    algo_hash_fips_cnt = algo_hash_cnt;
+#ifdef HAVE_MD4
+    algo_hash[algo_hash_cnt++] = enif_make_atom(env, "md4");
+#endif
+#ifdef HAVE_MD5
+    algo_hash[algo_hash_cnt++] = enif_make_atom(env, "md5");
+#endif
+#ifdef HAVE_RIPEMD160
+    algo_hash[algo_hash_cnt++] = enif_make_atom(env, "ripemd160");
+#endif
+
+    algo_pubkey_cnt = 0;
+    algo_pubkey[algo_pubkey_cnt++] = enif_make_atom(env, "rsa");
+    algo_pubkey[algo_pubkey_cnt++] = enif_make_atom(env, "dss");
+    algo_pubkey[algo_pubkey_cnt++] = enif_make_atom(env, "dh");
+#if defined(HAVE_EC)
+#if !defined(OPENSSL_NO_EC2M)
+    algo_pubkey[algo_pubkey_cnt++] = enif_make_atom(env, "ec_gf2m");
+#endif
+    algo_pubkey[algo_pubkey_cnt++] = enif_make_atom(env, "ecdsa");
+    algo_pubkey[algo_pubkey_cnt++] = enif_make_atom(env, "ecdh");
+#endif
+    // Non-validated algorithms follow
+    algo_pubkey_fips_cnt = algo_pubkey_cnt;
+    // Don't know if Edward curves are fips validated
+#if defined(HAVE_EDDSA)
+    algo_pubkey[algo_pubkey_cnt++] = enif_make_atom(env, "eddsa");
+#endif
+    algo_pubkey[algo_pubkey_cnt++] = enif_make_atom(env, "srp");
+
+ 
+    // Validated algorithms first
+    algo_mac_cnt = 0;
+    algo_mac[algo_mac_cnt++] = enif_make_atom(env,"hmac");
+#ifdef HAVE_CMAC
+    algo_mac[algo_mac_cnt++] = enif_make_atom(env,"cmac");
+#endif
+#ifdef HAVE_POLY1305
+    algo_mac[algo_mac_cnt++] = enif_make_atom(env,"poly1305");
+#endif
+    // Non-validated algorithms follow
+    algo_mac_fips_cnt = algo_mac_cnt;
+
+    // Validated algorithms first
+    algo_curve_cnt = 0;
+#if defined(HAVE_EC)
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"secp160k1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"secp160r1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"secp160r2");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"secp192r1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"secp192k1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"secp224k1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"secp224r1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"secp256k1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"secp256r1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"secp384r1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"secp521r1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"prime192v1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"prime192v2");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"prime192v3");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"prime239v1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"prime239v2");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"prime239v3");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"prime256v1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"wtls7");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"wtls9");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"wtls12");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"brainpoolP160r1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"brainpoolP160t1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"brainpoolP192r1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"brainpoolP192t1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"brainpoolP224r1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"brainpoolP224t1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"brainpoolP256r1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"brainpoolP256t1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"brainpoolP320r1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"brainpoolP320t1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"brainpoolP384r1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"brainpoolP384t1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"brainpoolP512r1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"brainpoolP512t1");
+#if !defined(OPENSSL_NO_EC2M)
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"sect163k1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"sect163r1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"sect163r2");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"sect193r1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"sect193r2");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"sect233k1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"sect233r1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"sect239k1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"sect283k1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"sect283r1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"sect409k1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"sect409r1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"sect571k1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"sect571r1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"c2pnb163v1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"c2pnb163v2");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"c2pnb163v3");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"c2pnb176v1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"c2tnb191v1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"c2tnb191v2");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"c2tnb191v3");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"c2pnb208w1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"c2tnb239v1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"c2tnb239v2");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"c2tnb239v3");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"c2pnb272w1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"c2pnb304w1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"c2tnb359v1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"c2pnb368w1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"c2tnb431r1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"wtls3");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"wtls5");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"wtls10");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"wtls11");
+#endif
+#endif
+    // Non-validated algorithms follow
+    algo_curve_fips_cnt = algo_curve_cnt;
+#if defined(HAVE_EC)
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"secp112r1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"secp112r2");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"secp128r1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"secp128r2");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"wtls6");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"wtls8");
+#if !defined(OPENSSL_NO_EC2M)
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"sect113r1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"sect113r2");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"sect131r1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"sect131r2");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"wtls1");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"wtls4");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"ipsec3");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"ipsec4");
+#endif
+#endif
+    //--
+#ifdef HAVE_EDDSA
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"ed25519");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"ed448");
+#endif
+#ifdef HAVE_ED_CURVE_DH
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"x25519");
+    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"x448");
+#endif
+
+    // Validated algorithms first
+    algo_rsa_opts_cnt = 0;
+#ifdef HAS_EVP_PKEY_CTX
+# ifdef HAVE_RSA_PKCS1_PSS_PADDING
+    algo_rsa_opts[algo_rsa_opts_cnt++] = enif_make_atom(env,"rsa_pkcs1_pss_padding");
+    algo_rsa_opts[algo_rsa_opts_cnt++] = enif_make_atom(env,"rsa_pss_saltlen");
+# endif
+# ifdef HAVE_RSA_MGF1_MD
+    algo_rsa_opts[algo_rsa_opts_cnt++] = enif_make_atom(env,"rsa_mgf1_md");
+# endif
+# ifdef HAVE_RSA_OAEP_PADDING
+    algo_rsa_opts[algo_rsa_opts_cnt++] = enif_make_atom(env,"rsa_pkcs1_oaep_padding");
+# endif
+# ifdef HAVE_RSA_OAEP_MD
+    algo_rsa_opts[algo_rsa_opts_cnt++] = enif_make_atom(env,"rsa_oaep_label");
+    algo_rsa_opts[algo_rsa_opts_cnt++] = enif_make_atom(env,"rsa_oaep_md");
+# endif
+    algo_rsa_opts[algo_rsa_opts_cnt++] = enif_make_atom(env,"signature_md");
+#endif
+    algo_rsa_opts[algo_rsa_opts_cnt++] = enif_make_atom(env,"rsa_pkcs1_padding");
+    algo_rsa_opts[algo_rsa_opts_cnt++] = enif_make_atom(env,"rsa_x931_padding");
+#ifdef HAVE_RSA_SSLV23_PADDING
+    algo_rsa_opts[algo_rsa_opts_cnt++] = enif_make_atom(env,"rsa_sslv23_padding");
+#endif
+    algo_rsa_opts[algo_rsa_opts_cnt++] = enif_make_atom(env,"rsa_no_padding");
+    algo_rsa_opts_fips_cnt = algo_rsa_opts_cnt;
+
+
+    // Check that the max number of algos is updated
+    ASSERT(algo_hash_cnt <= sizeof(algo_hash)/sizeof(ERL_NIF_TERM));
+    ASSERT(algo_pubkey_cnt <= sizeof(algo_pubkey)/sizeof(ERL_NIF_TERM));
+    ASSERT(algo_mac_cnt <= sizeof(algo_mac)/sizeof(ERL_NIF_TERM));
+    ASSERT(algo_curve_cnt <= sizeof(algo_curve)/sizeof(ERL_NIF_TERM));
+    ASSERT(algo_rsa_opts_cnt <= sizeof(algo_rsa_opts)/sizeof(ERL_NIF_TERM));
+}
+
+ERL_NIF_TERM algorithms(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{
+#ifdef FIPS_SUPPORT
+    int fips_mode  = FIPS_mode();
+
+    unsigned int hash_cnt   = fips_mode ? algo_hash_fips_cnt   : algo_hash_cnt;
+    unsigned int pubkey_cnt = fips_mode ? algo_pubkey_fips_cnt : algo_pubkey_cnt;
+    unsigned int mac_cnt    = fips_mode ? algo_mac_fips_cnt    : algo_mac_cnt;
+    unsigned int curve_cnt    = fips_mode ? algo_curve_fips_cnt    : algo_curve_cnt;
+    unsigned int rsa_opts_cnt = fips_mode ? algo_rsa_opts_fips_cnt : algo_rsa_opts_cnt;
+#else
+    unsigned int hash_cnt   = algo_hash_cnt;
+    unsigned int pubkey_cnt = algo_pubkey_cnt;
+    unsigned int mac_cnt    = algo_mac_cnt;
+    unsigned int curve_cnt    = algo_curve_cnt;
+    unsigned int rsa_opts_cnt = algo_rsa_opts_cnt;
+#endif
+    return enif_make_tuple6(env,
+                            enif_make_list_from_array(env, algo_hash,   hash_cnt),
+			    enif_make_list_from_array(env, algo_pubkey, pubkey_cnt),
+                            cipher_types_as_list(env),
+                            enif_make_list_from_array(env, algo_mac,    mac_cnt),
+			    enif_make_list_from_array(env, algo_curve,  curve_cnt),
+			    enif_make_list_from_array(env, algo_rsa_opts, rsa_opts_cnt)
+                            );
+}
diff --git a/lib/crypto/c_src/algorithms.h b/lib/crypto/c_src/algorithms.h
new file mode 100644
index 0000000000..068fb661ec
--- /dev/null
+++ b/lib/crypto/c_src/algorithms.h
@@ -0,0 +1,30 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifndef E_ALGORITHMS_H__
+#define E_ALGORITHMS_H__ 1
+
+#include "common.h"
+
+void init_algorithms_types(ErlNifEnv* env);
+
+ERL_NIF_TERM algorithms(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+
+#endif /* E_ALGORITHMS_H__ */
diff --git a/lib/crypto/c_src/api_ng.c b/lib/crypto/c_src/api_ng.c
new file mode 100644
index 0000000000..107723d2cb
--- /dev/null
+++ b/lib/crypto/c_src/api_ng.c
@@ -0,0 +1,557 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#include "api_ng.h"
+#include "aes.h"
+#include "cipher.h"
+
+/*
+ * A unified set of functions for encryption/decryption.
+ *
+ */
+ERL_NIF_TERM ng_crypto_update(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM ng_crypto_one_time(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+
+#ifdef HAVE_ECB_IVEC_BUG
+    /* <= 0.9.8l returns faulty ivec length */
+# define GET_IV_LEN(Ciph) ((Ciph)->flags & ECB_BUG_0_9_8L) ? 0 : EVP_CIPHER_iv_length((Ciph)->cipher.p)
+#else
+# define GET_IV_LEN(Ciph) EVP_CIPHER_iv_length((Ciph)->cipher.p)
+#endif
+
+/*************************************************************************/
+/* Get the arguments for the initialization of the EVP_CIPHER_CTX. Check */
+/* them and initialize that context.                                     */
+/*************************************************************************/
+static int get_init_args(ErlNifEnv* env,
+                         struct evp_cipher_ctx *ctx_res,
+                         const ERL_NIF_TERM cipher_arg,
+                         const ERL_NIF_TERM key_arg, 
+                         const ERL_NIF_TERM ivec_arg,
+                         const ERL_NIF_TERM encflg_arg,
+                         const struct cipher_type_t **cipherp,
+                         ERL_NIF_TERM *return_term)
+{
+    int ivec_len;
+    ErlNifBinary key_bin;
+    ErlNifBinary ivec_bin;
+    int encflg;                    
+
+    ctx_res->ctx = NULL; /* For testing if *ctx should be freed after errors */
+
+    /* Fetch the flag telling if we are going to encrypt (=true) or decrypt (=false) */
+    if (encflg_arg == atom_true)
+        encflg = 1;
+    else if (encflg_arg == atom_false)
+        encflg = 0;
+    else if (encflg_arg == atom_undefined)
+        /* For compat funcs in crypto.erl */
+        encflg = -1;
+    else
+        {
+            *return_term = EXCP_BADARG(env, "Bad enc flag");
+            goto err;
+        }
+
+    /* Fetch the key */
+    if (!enif_inspect_iolist_as_binary(env, key_arg, &key_bin))
+        {
+            *return_term = EXCP_BADARG(env, "Bad key");
+            goto err;
+        }
+
+    /* Fetch cipher type */
+    if (!enif_is_atom(env, cipher_arg))
+        {
+            *return_term = EXCP_BADARG(env, "Cipher id is not an atom");
+            goto err;
+        }
+
+    if (!(*cipherp = get_cipher_type(cipher_arg, key_bin.size)))
+        {
+            if (!get_cipher_type_no_key(cipher_arg))
+                *return_term = EXCP_BADARG(env, "Unknown cipher");
+            else
+                *return_term = EXCP_BADARG(env, "Bad key size");
+            goto err;
+        }
+
+    if ((*cipherp)->flags &  AEAD_CIPHER)
+        {
+            *return_term = EXCP_BADARG(env, "Missing arguments for this cipher");
+            goto err;
+        }
+
+
+    if (FORBIDDEN_IN_FIPS(*cipherp))
+        {
+            *return_term = EXCP_NOTSUP(env, "Forbidden in FIPS");
+            goto err;
+        }
+
+    /* Get ivec_len for this cipher (if we found one) */
+#if !defined(HAVE_EVP_AES_CTR)
+    /* This code is for historic OpenSSL where EVP_aes_*_ctr is not defined.... */
+    if ((*cipherp)->cipher.p) {
+        /* Not aes_ctr compatibility code since EVP_*
+           was defined and assigned to (*cipherp)->cipher.p */
+        ivec_len = GET_IV_LEN(*cipherp);
+    } else {
+        /* No EVP_* was found */
+        if ((*cipherp)->flags & AES_CTR_COMPAT)
+            /* Use aes_ctr compatibility code later */
+            ivec_len = 16;
+        else {
+            /* Unsupported crypto */
+            *return_term = EXCP_NOTSUP(env, "Cipher not supported in this libcrypto version");
+            goto err;
+        }
+    }
+#else
+    /* Normal code */
+    if (!((*cipherp)->cipher.p)) {
+        *return_term = EXCP_NOTSUP(env, "Cipher not supported in this libcrypto version");
+        goto err;
+    }
+    ivec_len = GET_IV_LEN(*cipherp);
+#endif
+    
+    /* (*cipherp)->cipher.p != NULL and ivec_len has a value */
+
+    /* Fetch IV */
+    if (ivec_len && (ivec_arg != atom_undefined)) {
+        if (!enif_inspect_iolist_as_binary(env, ivec_arg, &ivec_bin))
+            {
+                *return_term = EXCP_BADARG(env, "Bad iv type");
+                goto err;
+            }
+
+        if (ivec_len != ivec_bin.size)
+            {
+                *return_term = EXCP_BADARG(env, "Bad iv size");
+                goto err;
+            }
+    }
+
+    ctx_res->iv_len = ivec_len;
+    
+#if !defined(HAVE_EVP_AES_CTR)
+    if (!((*cipherp)->cipher.p)
+        && ((*cipherp)->flags & AES_CTR_COMPAT)
+        ) {
+        /* Must use aes_ctr compatibility code */
+        ERL_NIF_TERM ecount_bin;
+        unsigned char *outp;
+        if ((outp = enif_make_new_binary(env, AES_BLOCK_SIZE, &ecount_bin)) == NULL) {
+            *return_term = EXCP_ERROR(env, "Can't allocate ecount_bin");
+            goto err;
+        }
+        memset(outp, 0, AES_BLOCK_SIZE);
+
+        ctx_res->env = enif_alloc_env();
+        if (!ctx_res->env) {
+            *return_term = EXCP_ERROR(env, "Can't allocate env");
+            goto err;
+        }
+        ctx_res->state =
+            enif_make_copy(ctx_res->env,
+                           enif_make_tuple4(env, key_arg, ivec_arg, ecount_bin, enif_make_int(env, 0)));
+        goto success;
+    } else {
+        /* Flag for subsequent calls that no aes_ctr compatibility code should be called */
+        ctx_res->state = atom_undefined;
+        ctx_res->env = NULL;
+    }
+#endif
+
+    /* Initialize the EVP_CIPHER_CTX */
+
+    ctx_res->ctx = EVP_CIPHER_CTX_new();
+    if (! ctx_res->ctx)
+        {
+            *return_term = EXCP_ERROR(env, "Can't allocate context");
+            goto err;
+        }
+
+    if (!EVP_CipherInit_ex(ctx_res->ctx, (*cipherp)->cipher.p, NULL, NULL, NULL, encflg))
+        {
+            *return_term = EXCP_ERROR(env, "Can't initialize context, step 1");
+            goto err;
+        }
+
+    if (!EVP_CIPHER_CTX_set_key_length(ctx_res->ctx, (int)key_bin.size))
+        {
+            *return_term = EXCP_ERROR(env, "Can't initialize context, key_length");
+            goto err;
+        }
+
+#ifdef HAVE_RC2
+    if (EVP_CIPHER_type((*cipherp)->cipher.p) == NID_rc2_cbc) {
+        if (key_bin.size > INT_MAX / 8) {
+            *return_term = EXCP_BADARG(env, "To large rc2_cbc key");
+            goto err;
+        }
+        if (!EVP_CIPHER_CTX_ctrl(ctx_res->ctx, EVP_CTRL_SET_RC2_KEY_BITS, (int)key_bin.size * 8, NULL)) {
+            *return_term = EXCP_ERROR(env, "ctrl rc2_cbc key");
+            goto err;
+        }
+    }
+#endif
+
+    if (ivec_arg == atom_undefined || ivec_len == 0)
+        {
+            if (!EVP_CipherInit_ex(ctx_res->ctx, NULL, NULL, key_bin.data, NULL, -1)) {
+                *return_term = EXCP_ERROR(env, "Can't initialize key");
+                goto err;
+            }
+        }
+    else
+        if (!EVP_CipherInit_ex(ctx_res->ctx, NULL, NULL, key_bin.data, ivec_bin.data, -1))
+            {
+                *return_term = EXCP_ERROR(env, "Can't initialize key or iv");
+                goto err;
+            }
+
+    EVP_CIPHER_CTX_set_padding(ctx_res->ctx, 0);
+
+    *return_term = atom_ok;
+
+#if !defined(HAVE_EVP_AES_CTR)
+ success:
+#endif
+    return 1;
+
+ err:
+    if (ctx_res->ctx) EVP_CIPHER_CTX_free(ctx_res->ctx);
+    return 0;
+}
+
+/*************************************************************************/
+/* Get the arguments for the EVP_CipherUpdate function, and call it.     */
+/*************************************************************************/
+
+static int get_update_args(ErlNifEnv* env,
+                           struct evp_cipher_ctx *ctx_res,
+                           const ERL_NIF_TERM indata_arg,
+                           ERL_NIF_TERM *return_term)
+{
+    ErlNifBinary in_data_bin, out_data_bin;
+    int out_len, block_size;
+
+    if (!enif_inspect_binary(env, indata_arg, &in_data_bin) )
+        {
+            *return_term = EXCP_BADARG(env, "Bad 2:nd arg");
+            goto err;
+        }
+
+    ASSERT(in_data_bin.size <= INT_MAX);
+
+#if !defined(HAVE_EVP_AES_CTR)
+    if (ctx_res->state != atom_undefined) {
+        ERL_NIF_TERM state0, newstate_and_outdata;
+        const ERL_NIF_TERM *tuple_argv;
+        int tuple_argc;
+        
+        state0 = enif_make_copy(env, ctx_res->state);
+        
+        if (enif_get_tuple(env, state0, &tuple_argc, &tuple_argv) && (tuple_argc == 4)) {
+            /* A compatibility state term */
+            /* encrypt and decrypt is performed by calling the same function */
+            newstate_and_outdata = aes_ctr_stream_encrypt_compat(env, state0, indata_arg);
+
+            if (enif_get_tuple(env, newstate_and_outdata, &tuple_argc, &tuple_argv) && (tuple_argc == 2)) {
+                /* newstate_and_outdata = {NewState, OutData} */
+                ctx_res->state = enif_make_copy(ctx_res->env, tuple_argv[0]);
+                /* Return the OutData (from the newstate_and_outdata tuple) only: */
+                *return_term = tuple_argv[1];
+            }
+        }
+    } else
+#endif
+    {
+        block_size = EVP_CIPHER_CTX_block_size(ctx_res->ctx);
+
+        if (!enif_alloc_binary((size_t)in_data_bin.size+block_size, &out_data_bin))
+            {
+                *return_term = EXCP_ERROR(env, "Can't allocate outdata");
+                goto err;
+            }
+
+        if (!EVP_CipherUpdate(ctx_res->ctx, out_data_bin.data, &out_len, in_data_bin.data, in_data_bin.size))
+            {
+                *return_term = EXCP_ERROR(env, "Can't update");
+                goto err;
+            }
+
+        if (!enif_realloc_binary(&out_data_bin, (size_t)out_len))
+            {
+                *return_term = EXCP_ERROR(env, "Can't reallocate");
+                goto err;
+            }
+
+        CONSUME_REDS(env, in_data_bin);
+        /* return the result text as a binary: */
+        *return_term = enif_make_binary(env, &out_data_bin);
+    }
+
+    /* success: */
+    return 1;
+
+ err:
+    return 0;
+}
+
+/*************************************************************************/
+/* Initialize the state for (de/en)cryption                              */
+/*************************************************************************/
+
+ERL_NIF_TERM ng_crypto_init_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Cipher, Key, IVec, Encrypt)  % if no IV for the Cipher, set IVec = <<>>
+ */
+    struct evp_cipher_ctx *ctx_res = NULL;
+    const struct cipher_type_t *cipherp;
+    ERL_NIF_TERM ret;
+    int encflg;
+
+    if (enif_is_atom(env, argv[0])) {
+        if ((ctx_res = enif_alloc_resource(evp_cipher_ctx_rtype, sizeof(struct evp_cipher_ctx))) == NULL)
+            return EXCP_ERROR(env, "Can't allocate resource");
+
+        if (!get_init_args(env, ctx_res, argv[0], argv[1], argv[2], argv[argc-1],
+                           &cipherp, &ret))
+            /* Error msg in &ret */
+            goto ret;
+
+        ret = enif_make_resource(env, ctx_res);
+        if(ctx_res) enif_release_resource(ctx_res);
+
+    } else if (enif_get_resource(env, argv[0], (ErlNifResourceType*)evp_cipher_ctx_rtype, (void**)&ctx_res)) {
+        /* Fetch the flag telling if we are going to encrypt (=true) or decrypt (=false) */
+        if (argv[3] == atom_true)
+            encflg = 1;
+        else if (argv[3] == atom_false)
+            encflg = 0;
+        else {
+            ret = EXCP_BADARG(env, "Bad enc flag");
+            goto ret;
+        }
+        if (ctx_res->ctx) {
+            /* It is *not* a ctx_res for the compatibility handling of non-EVP aes_ctr */
+            if (!EVP_CipherInit_ex(ctx_res->ctx, NULL, NULL, NULL, NULL, encflg)) {
+                ret = EXCP_ERROR(env, "Can't initialize encflag");
+                goto ret;
+            }
+        }
+        ret = argv[0];
+    } else {
+        ret = EXCP_BADARG(env, "Bad 1:st arg");
+        goto ret;
+    }
+
+ ret:
+    return ret;
+}
+
+
+/*************************************************************************/
+/* Encrypt/decrypt                                                       */
+/*************************************************************************/
+
+#if !defined(HAVE_EVP_CIPHER_CTX_COPY)
+/*
+  The EVP_CIPHER_CTX_copy is not available in older cryptolibs although
+  the function is needed.
+  Instead of implement it in-place, we have a copy here as a compatibility
+  function
+*/
+
+int EVP_CIPHER_CTX_copy(EVP_CIPHER_CTX *out, const EVP_CIPHER_CTX *in);
+
+int EVP_CIPHER_CTX_copy(EVP_CIPHER_CTX *out, const EVP_CIPHER_CTX *in)
+{
+    if ((in == NULL) || (in->cipher == NULL))
+        {
+            return 0;
+        }
+#ifdef HAS_ENGINE_SUPPORT
+    /* Make sure it's safe to copy a cipher context using an ENGINE */
+    if (in->engine && !ENGINE_init(in->engine))
+        return 0;
+#endif
+
+    EVP_CIPHER_CTX_cleanup(out);
+    memcpy(out,in,sizeof *out);
+
+    if (in->cipher_data && in->cipher->ctx_size)
+        {
+            out->cipher_data=OPENSSL_malloc(in->cipher->ctx_size);
+            if (!out->cipher_data)
+                return 0;
+            memcpy(out->cipher_data,in->cipher_data,in->cipher->ctx_size);
+        }
+
+#if defined(EVP_CIPH_CUSTOM_COPY) && defined(EVP_CTRL_COPY)
+    if (in->cipher->flags & EVP_CIPH_CUSTOM_COPY)
+        return in->cipher->ctrl((EVP_CIPHER_CTX *)in, EVP_CTRL_COPY, 0, out);
+#endif
+    return 1;
+}
+/****** End of compatibility function ******/
+#endif
+
+
+ERL_NIF_TERM ng_crypto_update(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Context, Data [, IV]) */
+    struct evp_cipher_ctx *ctx_res;
+    struct evp_cipher_ctx ctx_res_copy;
+    ERL_NIF_TERM ret;
+
+    ctx_res_copy.ctx = NULL;
+
+    if (!enif_get_resource(env, argv[0], (ErlNifResourceType*)evp_cipher_ctx_rtype, (void**)&ctx_res))
+        return EXCP_BADARG(env, "Bad 1:st arg");
+    
+    if (argc == 3) {
+        ErlNifBinary ivec_bin;
+
+        memcpy(&ctx_res_copy, ctx_res, sizeof ctx_res_copy);
+#if !defined(HAVE_EVP_AES_CTR)
+        if (ctx_res_copy.state == atom_undefined)
+            /* Not going to use aes_ctr compat functions */
+#endif
+            {
+                ctx_res_copy.ctx = EVP_CIPHER_CTX_new();
+
+                if (!EVP_CIPHER_CTX_copy(ctx_res_copy.ctx, ctx_res->ctx)) {
+                    ret = EXCP_ERROR(env, "Can't copy ctx_res");
+                    goto err;
+                }
+            }
+
+        ctx_res = &ctx_res_copy;
+
+        if (!enif_inspect_iolist_as_binary(env, argv[2], &ivec_bin))
+            {
+                ret = EXCP_BADARG(env, "Bad iv type");
+                goto err;
+            }
+
+        if (ctx_res_copy.iv_len != ivec_bin.size)
+            {
+                ret = EXCP_BADARG(env, "Bad iv size");
+                goto err;
+            }
+        
+#if !defined(HAVE_EVP_AES_CTR)
+        if ((ctx_res_copy.state != atom_undefined) ) {
+            /* replace the iv in state with argv[2] */
+            ERL_NIF_TERM state0;
+            const ERL_NIF_TERM *tuple_argv;
+            int tuple_argc;
+            state0 = enif_make_copy(env, ctx_res_copy.state);
+            if (enif_get_tuple(env, state0, &tuple_argc, &tuple_argv) && (tuple_argc == 4)) {
+                /* A compatibility state term */
+                ctx_res_copy.state = enif_make_tuple4(env, tuple_argv[0], argv[2], tuple_argv[2], tuple_argv[3]);
+            }
+        } else
+#endif
+            if (!EVP_CipherInit_ex(ctx_res_copy.ctx, NULL, NULL, NULL, ivec_bin.data, -1))
+                {
+                    ret = EXCP_ERROR(env, "Can't set iv");
+                    goto err;
+                }
+        
+        get_update_args(env, &ctx_res_copy, argv[1], &ret);
+    } else
+        get_update_args(env, ctx_res, argv[1], &ret);
+
+ err:
+    if (ctx_res_copy.ctx)
+        EVP_CIPHER_CTX_free(ctx_res_copy.ctx);
+
+    return ret; /* Both success and error */
+}
+
+
+ERL_NIF_TERM ng_crypto_update_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Context, Data [, IV]) */
+    ErlNifBinary   data_bin;
+
+    ASSERT(argc <= 3);
+
+    if (!enif_inspect_binary(env, argv[1], &data_bin))
+        return EXCP_BADARG(env, "expected binary as data");
+
+    if (data_bin.size > INT_MAX)
+        return EXCP_BADARG(env, "to long data");
+
+    /* Run long jobs on a dirty scheduler to not block the current emulator thread */
+    if (data_bin.size > MAX_BYTES_TO_NIF) {
+        return enif_schedule_nif(env, "ng_crypto_update",
+                                 ERL_NIF_DIRTY_JOB_CPU_BOUND,
+                                 ng_crypto_update, argc, argv);
+    }
+
+    return ng_crypto_update(env, argc, argv);
+}
+
+/*************************************************************************/
+/* One shot                                                              */
+/*************************************************************************/
+
+ERL_NIF_TERM ng_crypto_one_time(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Cipher, Key, IVec, Data, Encrypt) */
+    struct evp_cipher_ctx ctx_res;
+    const struct cipher_type_t *cipherp;
+    ERL_NIF_TERM ret;
+
+    if (!get_init_args(env, &ctx_res, argv[0], argv[1], argv[2], argv[4], &cipherp, &ret))
+        goto ret;
+
+    get_update_args(env, &ctx_res, argv[3], &ret);
+
+ ret:
+    if (ctx_res.ctx)
+        EVP_CIPHER_CTX_free(ctx_res.ctx);
+    return ret;
+}
+
+ERL_NIF_TERM ng_crypto_one_time_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Cipher, Key, IVec, Data, Encrypt)  % if no IV for the Cipher, set IVec = <<>>
+  */
+    ErlNifBinary   data_bin;
+
+    ASSERT(argc == 5);
+
+    if (!enif_inspect_binary(env, argv[3], &data_bin))
+        return EXCP_BADARG(env, "expected binary as data");
+
+    if (data_bin.size > INT_MAX)
+        return EXCP_BADARG(env, "to long data");
+
+    /* Run long jobs on a dirty scheduler to not block the current emulator thread */
+    if (data_bin.size > MAX_BYTES_TO_NIF) {
+        return enif_schedule_nif(env, "ng_crypto_one_time",
+                                 ERL_NIF_DIRTY_JOB_CPU_BOUND,
+                                 ng_crypto_one_time, argc, argv);
+    }
+
+    return ng_crypto_one_time(env, argc, argv);
+}
diff --git a/lib/crypto/c_src/api_ng.h b/lib/crypto/c_src/api_ng.h
new file mode 100644
index 0000000000..aaf67524ae
--- /dev/null
+++ b/lib/crypto/c_src/api_ng.h
@@ -0,0 +1,30 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifndef E_API_NG_H__
+#define E_API_NG_H__ 1
+
+#include "common.h"
+
+ERL_NIF_TERM ng_crypto_init_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM ng_crypto_update_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM ng_crypto_one_time_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+
+#endif /* E_AES_H__ */
diff --git a/lib/crypto/c_src/atoms.c b/lib/crypto/c_src/atoms.c
new file mode 100644
index 0000000000..0793ffa6ca
--- /dev/null
+++ b/lib/crypto/c_src/atoms.c
@@ -0,0 +1,250 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#include "atoms.h"
+
+ERL_NIF_TERM atom_true;
+ERL_NIF_TERM atom_false;
+ERL_NIF_TERM atom_sha;
+ERL_NIF_TERM atom_error;
+ERL_NIF_TERM atom_rsa_pkcs1_padding;
+ERL_NIF_TERM atom_rsa_pkcs1_oaep_padding;
+ERL_NIF_TERM atom_rsa_no_padding;
+ERL_NIF_TERM atom_signature_md;
+ERL_NIF_TERM atom_undefined;
+
+ERL_NIF_TERM atom_ok;
+ERL_NIF_TERM atom_none;
+ERL_NIF_TERM atom_notsup;
+ERL_NIF_TERM atom_badarg;
+ERL_NIF_TERM atom_digest;
+#ifdef FIPS_SUPPORT
+ERL_NIF_TERM atom_enabled;
+ERL_NIF_TERM atom_not_enabled;
+#else
+ERL_NIF_TERM atom_not_supported;
+#endif
+
+ERL_NIF_TERM atom_type;
+ERL_NIF_TERM atom_size;
+ERL_NIF_TERM atom_block_size;
+ERL_NIF_TERM atom_key_length;
+ERL_NIF_TERM atom_iv_length;
+ERL_NIF_TERM atom_mode;
+ERL_NIF_TERM atom_ecb_mode;
+ERL_NIF_TERM atom_cbc_mode;
+ERL_NIF_TERM atom_cfb_mode;
+ERL_NIF_TERM atom_ofb_mode;
+ERL_NIF_TERM atom_ctr_mode;
+ERL_NIF_TERM atom_gcm_mode;
+ERL_NIF_TERM atom_ccm_mode;
+ERL_NIF_TERM atom_xts_mode;
+ERL_NIF_TERM atom_wrap_mode;
+ERL_NIF_TERM atom_ocb_mode;
+ERL_NIF_TERM atom_stream_cipher;
+
+#if defined(HAVE_EC)
+ERL_NIF_TERM atom_prime_field;
+ERL_NIF_TERM atom_characteristic_two_field;
+ERL_NIF_TERM atom_tpbasis;
+ERL_NIF_TERM atom_ppbasis;
+ERL_NIF_TERM atom_onbasis;
+#endif
+
+ERL_NIF_TERM atom_aes_cfb8;
+ERL_NIF_TERM atom_aes_cfb128;
+#ifdef HAVE_GCM
+ERL_NIF_TERM atom_aes_gcm;
+#endif
+#ifdef HAVE_CCM
+ERL_NIF_TERM atom_aes_ccm;
+#endif
+
+ERL_NIF_TERM atom_rsa;
+ERL_NIF_TERM atom_dss;
+ERL_NIF_TERM atom_ecdsa;
+
+#ifdef HAVE_ED_CURVE_DH
+ERL_NIF_TERM atom_x25519;
+ERL_NIF_TERM atom_x448;
+#endif
+
+ERL_NIF_TERM atom_eddsa;
+#ifdef HAVE_EDDSA
+ERL_NIF_TERM atom_ed25519;
+ERL_NIF_TERM atom_ed448;
+#endif
+
+ERL_NIF_TERM atom_rsa_mgf1_md;
+ERL_NIF_TERM atom_rsa_oaep_label;
+ERL_NIF_TERM atom_rsa_oaep_md;
+ERL_NIF_TERM atom_rsa_pad; /* backwards compatibility */
+ERL_NIF_TERM atom_rsa_padding;
+ERL_NIF_TERM atom_rsa_pkcs1_pss_padding;
+#ifdef HAVE_RSA_SSLV23_PADDING
+ERL_NIF_TERM atom_rsa_sslv23_padding;
+#endif
+ERL_NIF_TERM atom_rsa_x931_padding;
+ERL_NIF_TERM atom_rsa_pss_saltlen;
+
+#ifdef HAVE_BLAKE2
+ERL_NIF_TERM atom_blake2b;
+ERL_NIF_TERM atom_blake2s;
+#endif
+
+#ifdef HAS_ENGINE_SUPPORT
+
+ERL_NIF_TERM atom_engine_method_rsa;
+ERL_NIF_TERM atom_engine_method_dsa;
+ERL_NIF_TERM atom_engine_method_dh;
+ERL_NIF_TERM atom_engine_method_rand;
+ERL_NIF_TERM atom_engine_method_ecdh;
+ERL_NIF_TERM atom_engine_method_ecdsa;
+ERL_NIF_TERM atom_engine_method_ciphers;
+ERL_NIF_TERM atom_engine_method_digests;
+ERL_NIF_TERM atom_engine_method_store;
+ERL_NIF_TERM atom_engine_method_pkey_meths;
+ERL_NIF_TERM atom_engine_method_pkey_asn1_meths;
+ERL_NIF_TERM atom_engine_method_ec;
+
+ERL_NIF_TERM atom_engine;
+ERL_NIF_TERM atom_key_id;
+ERL_NIF_TERM atom_password;
+#endif
+
+int init_atoms(ErlNifEnv *env, const ERL_NIF_TERM fips_mode, const ERL_NIF_TERM load_info) {
+    atom_true  = enif_make_atom(env,"true");
+    atom_false = enif_make_atom(env,"false");
+    /* Enter FIPS mode */
+    if (fips_mode == atom_true) {
+#ifdef FIPS_SUPPORT
+        if (!FIPS_mode_set(1)) {
+#else
+        {
+#endif
+            PRINTF_ERR0("CRYPTO: Could not setup FIPS mode");
+            return 0;
+        }
+    } else if (fips_mode != atom_false) {
+        PRINTF_ERR1("CRYPTO: Invalid load_info '%T'", load_info);
+        return 0;
+    }
+
+    atom_sha = enif_make_atom(env,"sha");
+    atom_error = enif_make_atom(env,"error");
+    atom_rsa_pkcs1_padding = enif_make_atom(env,"rsa_pkcs1_padding");
+    atom_rsa_pkcs1_oaep_padding = enif_make_atom(env,"rsa_pkcs1_oaep_padding");
+    atom_rsa_no_padding = enif_make_atom(env,"rsa_no_padding");
+    atom_signature_md = enif_make_atom(env,"signature_md");
+    atom_undefined = enif_make_atom(env,"undefined");
+    atom_ok = enif_make_atom(env,"ok");
+    atom_none = enif_make_atom(env,"none");
+    atom_notsup = enif_make_atom(env,"notsup");
+    atom_badarg = enif_make_atom(env,"badarg");
+    atom_digest = enif_make_atom(env,"digest");
+
+    atom_type = enif_make_atom(env,"type");
+    atom_size = enif_make_atom(env,"size");
+    atom_block_size = enif_make_atom(env,"block_size");
+    atom_key_length = enif_make_atom(env,"key_length");
+    atom_iv_length = enif_make_atom(env,"iv_length");
+    atom_mode = enif_make_atom(env,"mode");
+    atom_ecb_mode = enif_make_atom(env,"ecb_mode");
+    atom_cbc_mode = enif_make_atom(env,"cbc_mode");
+    atom_cfb_mode = enif_make_atom(env,"cfb_mode");
+    atom_ofb_mode = enif_make_atom(env,"ofb_mode");
+    atom_ctr_mode = enif_make_atom(env,"ctr_mode");
+    atom_gcm_mode = enif_make_atom(env,"gcm_mode");
+    atom_ccm_mode = enif_make_atom(env,"ccm_mode");
+    atom_xts_mode = enif_make_atom(env,"xts_mode");
+    atom_wrap_mode = enif_make_atom(env,"wrap_mode");
+    atom_ocb_mode = enif_make_atom(env,"ocb_mode");
+    atom_stream_cipher = enif_make_atom(env,"stream_cipher");
+
+#if defined(HAVE_EC)
+    atom_prime_field = enif_make_atom(env,"prime_field");
+    atom_characteristic_two_field = enif_make_atom(env,"characteristic_two_field");
+    atom_tpbasis = enif_make_atom(env,"tpbasis");
+    atom_ppbasis = enif_make_atom(env,"ppbasis");
+    atom_onbasis = enif_make_atom(env,"onbasis");
+#endif
+
+    atom_aes_cfb8 = enif_make_atom(env, "aes_cfb8");
+    atom_aes_cfb128 = enif_make_atom(env, "aes_cfb128");
+#ifdef HAVE_GCM
+    atom_aes_gcm = enif_make_atom(env, "aes_gcm");
+#endif
+#ifdef HAVE_CCM
+    atom_aes_ccm = enif_make_atom(env, "aes_ccm");
+#endif
+
+#ifdef FIPS_SUPPORT
+    atom_enabled = enif_make_atom(env,"enabled");
+    atom_not_enabled = enif_make_atom(env,"not_enabled");
+#else
+    atom_not_supported = enif_make_atom(env,"not_supported");
+#endif
+    atom_rsa = enif_make_atom(env,"rsa");
+    atom_dss = enif_make_atom(env,"dss");
+    atom_ecdsa = enif_make_atom(env,"ecdsa");
+
+#ifdef HAVE_ED_CURVE_DH
+    atom_x25519 = enif_make_atom(env,"x25519");
+    atom_x448 = enif_make_atom(env,"x448");
+#endif
+    atom_eddsa = enif_make_atom(env,"eddsa");
+#ifdef HAVE_EDDSA
+    atom_ed25519 = enif_make_atom(env,"ed25519");
+    atom_ed448 = enif_make_atom(env,"ed448");
+#endif
+    atom_rsa_mgf1_md = enif_make_atom(env,"rsa_mgf1_md");
+    atom_rsa_oaep_label = enif_make_atom(env,"rsa_oaep_label");
+    atom_rsa_oaep_md = enif_make_atom(env,"rsa_oaep_md");
+    atom_rsa_pad = enif_make_atom(env,"rsa_pad"); /* backwards compatibility */
+    atom_rsa_padding = enif_make_atom(env,"rsa_padding");
+    atom_rsa_pkcs1_pss_padding = enif_make_atom(env,"rsa_pkcs1_pss_padding");
+#ifdef HAVE_RSA_SSLV23_PADDING
+    atom_rsa_sslv23_padding = enif_make_atom(env,"rsa_sslv23_padding");
+#endif
+    atom_rsa_x931_padding = enif_make_atom(env,"rsa_x931_padding");
+    atom_rsa_pss_saltlen = enif_make_atom(env,"rsa_pss_saltlen");
+
+#ifdef HAS_ENGINE_SUPPORT
+
+    atom_engine_method_rsa = enif_make_atom(env,"engine_method_rsa");
+    atom_engine_method_dsa = enif_make_atom(env,"engine_method_dsa");
+    atom_engine_method_dh = enif_make_atom(env,"engine_method_dh");
+    atom_engine_method_rand = enif_make_atom(env,"engine_method_rand");
+    atom_engine_method_ecdh = enif_make_atom(env,"engine_method_ecdh");
+    atom_engine_method_ecdsa = enif_make_atom(env,"engine_method_ecdsa");
+    atom_engine_method_store = enif_make_atom(env,"engine_method_store");
+    atom_engine_method_ciphers = enif_make_atom(env,"engine_method_ciphers");
+    atom_engine_method_digests = enif_make_atom(env,"engine_method_digests");
+    atom_engine_method_pkey_meths = enif_make_atom(env,"engine_method_pkey_meths");
+    atom_engine_method_pkey_asn1_meths = enif_make_atom(env,"engine_method_pkey_asn1_meths");
+    atom_engine_method_ec = enif_make_atom(env,"engine_method_ec");
+
+    atom_engine = enif_make_atom(env,"engine");
+    atom_key_id = enif_make_atom(env,"key_id");
+    atom_password = enif_make_atom(env,"password");
+#endif
+
+    return 1;
+}
diff --git a/lib/crypto/c_src/atoms.h b/lib/crypto/c_src/atoms.h
new file mode 100644
index 0000000000..24f6dc26fd
--- /dev/null
+++ b/lib/crypto/c_src/atoms.h
@@ -0,0 +1,133 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifndef E_ATOMS_H__
+#define E_ATOMS_H__ 1
+
+#include <erl_nif.h>
+#include "openssl_config.h"
+
+extern ERL_NIF_TERM atom_true;
+extern ERL_NIF_TERM atom_false;
+extern ERL_NIF_TERM atom_sha;
+extern ERL_NIF_TERM atom_error;
+extern ERL_NIF_TERM atom_rsa_pkcs1_padding;
+extern ERL_NIF_TERM atom_rsa_pkcs1_oaep_padding;
+extern ERL_NIF_TERM atom_rsa_no_padding;
+extern ERL_NIF_TERM atom_signature_md;
+extern ERL_NIF_TERM atom_undefined;
+
+extern ERL_NIF_TERM atom_ok;
+extern ERL_NIF_TERM atom_none;
+extern ERL_NIF_TERM atom_notsup;
+extern ERL_NIF_TERM atom_badarg;
+extern ERL_NIF_TERM atom_digest;
+#ifdef FIPS_SUPPORT
+extern ERL_NIF_TERM atom_enabled;
+extern ERL_NIF_TERM atom_not_enabled;
+#else
+extern ERL_NIF_TERM atom_not_supported;
+#endif
+
+extern ERL_NIF_TERM atom_type;
+extern ERL_NIF_TERM atom_size;
+extern ERL_NIF_TERM atom_block_size;
+extern ERL_NIF_TERM atom_key_length;
+extern ERL_NIF_TERM atom_iv_length;
+extern ERL_NIF_TERM atom_mode;
+extern ERL_NIF_TERM atom_ecb_mode;
+extern ERL_NIF_TERM atom_cbc_mode;
+extern ERL_NIF_TERM atom_cfb_mode;
+extern ERL_NIF_TERM atom_ofb_mode;
+extern ERL_NIF_TERM atom_ctr_mode;
+extern ERL_NIF_TERM atom_gcm_mode;
+extern ERL_NIF_TERM atom_ccm_mode;
+extern ERL_NIF_TERM atom_xts_mode;
+extern ERL_NIF_TERM atom_wrap_mode;
+extern ERL_NIF_TERM atom_ocb_mode;
+extern ERL_NIF_TERM atom_stream_cipher;
+
+#if defined(HAVE_EC)
+extern ERL_NIF_TERM atom_prime_field;
+extern ERL_NIF_TERM atom_characteristic_two_field;
+extern ERL_NIF_TERM atom_tpbasis;
+extern ERL_NIF_TERM atom_ppbasis;
+extern ERL_NIF_TERM atom_onbasis;
+#endif
+
+extern ERL_NIF_TERM atom_aes_cfb8;
+extern ERL_NIF_TERM atom_aes_cfb128;
+#ifdef HAVE_GCM
+extern ERL_NIF_TERM atom_aes_gcm;
+#endif
+#ifdef HAVE_CCM
+extern ERL_NIF_TERM atom_aes_ccm;
+#endif
+
+extern ERL_NIF_TERM atom_rsa;
+extern ERL_NIF_TERM atom_dss;
+extern ERL_NIF_TERM atom_ecdsa;
+
+#ifdef HAVE_ED_CURVE_DH
+extern ERL_NIF_TERM atom_x25519;
+extern ERL_NIF_TERM atom_x448;
+#endif
+
+extern ERL_NIF_TERM atom_eddsa;
+#ifdef HAVE_EDDSA
+extern ERL_NIF_TERM atom_ed25519;
+extern ERL_NIF_TERM atom_ed448;
+#endif
+
+extern ERL_NIF_TERM atom_rsa_mgf1_md;
+extern ERL_NIF_TERM atom_rsa_oaep_label;
+extern ERL_NIF_TERM atom_rsa_oaep_md;
+extern ERL_NIF_TERM atom_rsa_pad; /* backwards compatibility */
+extern ERL_NIF_TERM atom_rsa_padding;
+extern ERL_NIF_TERM atom_rsa_pkcs1_pss_padding;
+#ifdef HAVE_RSA_SSLV23_PADDING
+extern ERL_NIF_TERM atom_rsa_sslv23_padding;
+#endif
+extern ERL_NIF_TERM atom_rsa_x931_padding;
+extern ERL_NIF_TERM atom_rsa_pss_saltlen;
+
+#ifdef HAS_ENGINE_SUPPORT
+
+extern ERL_NIF_TERM atom_engine_method_rsa;
+extern ERL_NIF_TERM atom_engine_method_dsa;
+extern ERL_NIF_TERM atom_engine_method_dh;
+extern ERL_NIF_TERM atom_engine_method_rand;
+extern ERL_NIF_TERM atom_engine_method_ecdh;
+extern ERL_NIF_TERM atom_engine_method_ecdsa;
+extern ERL_NIF_TERM atom_engine_method_ciphers;
+extern ERL_NIF_TERM atom_engine_method_digests;
+extern ERL_NIF_TERM atom_engine_method_store;
+extern ERL_NIF_TERM atom_engine_method_pkey_meths;
+extern ERL_NIF_TERM atom_engine_method_pkey_asn1_meths;
+extern ERL_NIF_TERM atom_engine_method_ec;
+
+extern ERL_NIF_TERM atom_engine;
+extern ERL_NIF_TERM atom_key_id;
+extern ERL_NIF_TERM atom_password;
+#endif
+
+int init_atoms(ErlNifEnv *env, const ERL_NIF_TERM fips_mode, const ERL_NIF_TERM load_info);
+
+#endif /* E_ATOMS_H__ */
diff --git a/lib/crypto/c_src/bn.c b/lib/crypto/c_src/bn.c
new file mode 100644
index 0000000000..34ed4f7ebc
--- /dev/null
+++ b/lib/crypto/c_src/bn.c
@@ -0,0 +1,186 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#include "bn.h"
+
+
+int get_bn_from_mpint(ErlNifEnv* env, ERL_NIF_TERM term, BIGNUM** bnp)
+{
+    BIGNUM *ret;
+    ErlNifBinary bin;
+    int sz;
+
+    if (!enif_inspect_binary(env, term, &bin))
+        goto err;
+    if (bin.size > INT_MAX - 4)
+        goto err;
+
+    ERL_VALGRIND_ASSERT_MEM_DEFINED(bin.data, bin.size);
+
+    if (bin.size < 4)
+        goto err;
+    sz = (int)bin.size - 4;
+    if (get_int32(bin.data) != sz)
+        goto err;
+
+    if ((ret = BN_bin2bn(bin.data+4, sz, NULL)) == NULL)
+        goto err;
+
+    *bnp = ret;
+    return 1;
+
+ err:
+    return 0;
+}
+
+int get_bn_from_bin(ErlNifEnv* env, ERL_NIF_TERM term, BIGNUM** bnp)
+{
+    BIGNUM *ret;
+    ErlNifBinary bin;
+
+    if (!enif_inspect_binary(env, term, &bin))
+        goto err;
+    if (bin.size > INT_MAX)
+        goto err;
+
+    ERL_VALGRIND_ASSERT_MEM_DEFINED(bin.data, bin.size);
+
+    if ((ret = BN_bin2bn(bin.data, (int)bin.size, NULL)) == NULL)
+        goto err;
+
+    *bnp = ret;
+    return 1;
+
+ err:
+    return 0;
+}
+
+ERL_NIF_TERM bin_from_bn(ErlNifEnv* env, const BIGNUM *bn)
+{
+    int bn_len;
+    unsigned char *bin_ptr;
+    ERL_NIF_TERM term;
+
+    /* Copy the bignum into an erlang binary. */
+    if ((bn_len = BN_num_bytes(bn)) < 0)
+        goto err;
+    if ((bin_ptr = enif_make_new_binary(env, (size_t)bn_len, &term)) == NULL)
+        goto err;
+
+    if (BN_bn2bin(bn, bin_ptr) < 0)
+        goto err;
+
+    return term;
+
+ err:
+    return atom_error;
+}
+
+ERL_NIF_TERM mod_exp_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Base,Exponent,Modulo,bin_hdr) */
+    BIGNUM *bn_base = NULL, *bn_exponent = NULL, *bn_modulo = NULL, *bn_result = NULL;
+    BN_CTX *bn_ctx = NULL;
+    unsigned char* ptr;
+    int dlen;
+    unsigned bin_hdr; /* return type: 0=plain binary, 4: mpint */
+    unsigned extra_byte;
+    ERL_NIF_TERM ret;
+
+    ASSERT(argc == 4);
+
+    if (!get_bn_from_bin(env, argv[0], &bn_base))
+        goto bad_arg;
+    if (!get_bn_from_bin(env, argv[1], &bn_exponent))
+        goto bad_arg;
+    if (!get_bn_from_bin(env, argv[2], &bn_modulo))
+        goto bad_arg;
+    if (!enif_get_uint(env, argv[3], &bin_hdr))
+        goto bad_arg;
+    if (bin_hdr != 0 && bin_hdr != 4)
+        goto bad_arg;
+
+    if ((bn_result = BN_new()) == NULL)
+        goto err;
+    if ((bn_ctx = BN_CTX_new()) == NULL)
+        goto err;
+
+    if (!BN_mod_exp(bn_result, bn_base, bn_exponent, bn_modulo, bn_ctx))
+        goto err;
+
+    dlen = BN_num_bytes(bn_result);
+    if (dlen < 0 || dlen > INT_MAX / 8)
+        goto bad_arg;
+    extra_byte = bin_hdr && BN_is_bit_set(bn_result, dlen * 8 - 1);
+
+    if ((ptr = enif_make_new_binary(env, bin_hdr + extra_byte + (unsigned int)dlen, &ret)) == NULL)
+        goto err;
+
+    if (bin_hdr) {
+        put_uint32(ptr, extra_byte + (unsigned int)dlen);
+        ptr[4] = 0; /* extra zeroed byte to ensure a positive mpint */
+        ptr += bin_hdr + extra_byte;
+    }
+
+    BN_bn2bin(bn_result, ptr);
+    goto done;
+
+ bad_arg:
+ err:
+    ret = enif_make_badarg(env);
+
+ done:
+    if (bn_base)
+        BN_free(bn_base);
+    if (bn_exponent)
+        BN_free(bn_exponent);
+    if (bn_modulo)
+        BN_free(bn_modulo);
+    if (bn_result)
+        BN_free(bn_result);
+    if (bn_ctx)
+        BN_CTX_free(bn_ctx);
+    return ret;
+}
+
+#ifdef HAVE_EC
+ERL_NIF_TERM bn2term(ErlNifEnv* env, const BIGNUM *bn)
+{
+    int dlen;
+    unsigned char* ptr;
+    ERL_NIF_TERM ret;
+
+    if (bn == NULL)
+        return atom_undefined;
+
+    dlen = BN_num_bytes(bn);
+    if (dlen < 0)
+        goto err;
+    if ((ptr = enif_make_new_binary(env, (size_t)dlen, &ret)) == NULL)
+        goto err;
+
+    BN_bn2bin(bn, ptr);
+
+    ERL_VALGRIND_MAKE_MEM_DEFINED(ptr, dlen);
+    return ret;
+
+ err:
+    return enif_make_badarg(env);
+}
+#endif
diff --git a/lib/crypto/c_src/bn.h b/lib/crypto/c_src/bn.h
new file mode 100644
index 0000000000..332b06e79d
--- /dev/null
+++ b/lib/crypto/c_src/bn.h
@@ -0,0 +1,36 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifndef E_BN_H__
+#define E_BN_H__ 1
+
+#include "common.h"
+
+ERL_NIF_TERM bin_from_bn(ErlNifEnv* env, const BIGNUM *bn);
+ERL_NIF_TERM mod_exp_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+
+#ifdef HAVE_EC
+ERL_NIF_TERM bn2term(ErlNifEnv* env, const BIGNUM *bn);
+#endif
+
+int get_bn_from_mpint(ErlNifEnv* env, ERL_NIF_TERM term, BIGNUM** bnp);
+int get_bn_from_bin(ErlNifEnv* env, ERL_NIF_TERM term, BIGNUM** bnp);
+
+#endif /* E_BN_H__ */
diff --git a/lib/crypto/c_src/check_erlang.cocci b/lib/crypto/c_src/check_erlang.cocci
new file mode 100644
index 0000000000..b2a981f2ac
--- /dev/null
+++ b/lib/crypto/c_src/check_erlang.cocci
@@ -0,0 +1,196 @@
+// %CopyrightBegin%
+//
+// Copyright Doug Hogan 2019. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// %CopyrightEnd%
+
+// Coccinelle script to help verify Erlang calls.
+// http://coccinelle.lip6.fr
+// https://github.com/coccinelle/coccinelle
+//
+// These work with the Erlang code because it has a rigid coding pattern.
+// $ spatch.opt --all-includes -sp_file check_erlang.cocci -dir .
+
+// Make sure resources are cleaned up properly in all paths.
+// Need 'strict' so it's also checked in error handling paths.
+@enif_alloc_resource@
+type T;
+identifier CTX, L;
+identifier virtual.enif_alloc_resource, virtual.enif_release_resource;
+position p, pr;
+@@
+
+ T *CTX = NULL;
+
+ ...
+ if ((CTX = enif_alloc_resource(...)@p) == NULL)
+   goto L;
+
+ ... when strict, forall
+ if (CTX)
+   enif_release_resource(CTX)@pr;
+
+
+// After calling enif_alloc_binary(), you must either release it with
+// enif_release_binary() or transfer ownership to Erlang via enif_make_binary().
+@enif_alloc_binary@
+expression SZ;
+identifier BIN, RET, ENV, X, L;
+identifier TUPLE =~ "^enif_make_tuple[0-9]+$";
+identifier virtual.enif_alloc_binary, virtual.enif_make_binary;
+identifier virtual.enif_release_binary;
+position pa, pm, pr;
+@@
+
+// This construct is used in engine.c
+(
+  if (!enif_alloc_binary(SZ, &BIN)@pa)
+      goto L;
+
+  ... when strict, forall
+  return
+(
+  enif_make_binary(ENV, &BIN)@pm
+|
+  TUPLE(..., enif_make_binary(ENV, &BIN)@pm)@pm
+);
+
+|
+// This is the typical way we allocate and use binaries.
+  int X = 0;
+
+  ...
+  if (!enif_alloc_binary(SZ, &BIN)@pa)
+    goto L;
+  X = 1;
+
+  ... when strict, forall
+(
+  RET = enif_make_binary(ENV, &BIN)@pm;
+  X = 0;
+|
+  if (X)
+    enif_release_binary(&BIN)@pr;
+|
+  return enif_make_binary(ENV, &BIN)@pm;
+)
+)
+
+// TODO: These don't have single checks that handle all cases.
+//
+// enif_consume_timeslice      returns 1 if exhausted or else 0
+// enif_has_pending_exception  returns true if exception pending
+
+@erlang_check_void@
+identifier FUNCVOID =~ "^(enif_mutex_destroy|enif_mutex_lock|enif_mutex_unlock|enif_rwlock_destroy|enif_rwlock_rlock|enif_rwlock_runlock|enif_rwlock_rwlock|enif_rwlock_rwunlock|enif_system_info)$";
+position p;
+@@
+
+  FUNCVOID(...)@p;
+
+
+@erlang_check_null@
+expression X;
+identifier L;
+identifier FUNCNULL =~ "^(enif_alloc|enif_alloc_resource|enif_dlopen|enif_dlsym|enif_make_new_binary|enif_mutex_create|enif_open_resource_type|enif_realloc|enif_rwlock_create)$";
+position p;
+@@
+
+(
+  if ((X = FUNCNULL(...)@p) == NULL)
+      goto L;
+|
+  X = FUNCNULL(...)@p;
+  if (X == NULL)
+      goto L;
+|
+  return FUNCNULL(...)@p;
+)
+
+
+@erlang_check_not@
+identifier L;
+identifier FUNCNOT =~ "^(enif_alloc_binary|enif_get_int|enif_get_list_cell|enif_get_list_length|enif_get_long|enif_get_map_value|enif_get_resource|enif_get_tuple|enif_get_uint|enif_get_ulong|enif_inspect_binary|enif_inspect_iolist_as_binary|enif_is_atom|enif_is_binary|enif_is_current_process_alive|enif_is_empty_list|enif_is_list|enif_is_map|enif_is_tuple|enif_realloc_binary)$";
+position p;
+@@
+
+(
+  if (!FUNCNOT(...)@p)
+      goto L;
+|
+  return FUNCNOT(...)@p;
+)
+
+
+@erlang_check_null_free@
+expression X;
+identifier FUNCFREE =~ "^(enif_free|enif_free_env|enif_free_iovec|enif_release_binary|enif_release_resource)$";
+position p;
+@@
+
+  if (
+(
+ X
+|
+ X != NULL
+)
+  )
+    FUNCFREE(X)@p;
+
+
+@erlang_check_new@
+expression RET;
+identifier FUNCNEW =~ "^(enif_make_atom|enif_make_badarg|enif_make_binary|enif_make_int|enif_make_list|enif_make_list_from_array|enif_make_resource|enif_make_tuple|enif_raise_exception|enif_schedule_nif|enif_thread_self)$";
+position p;
+@@
+
+(
+  RET = FUNCNEW(...)@p;
+|
+  return FUNCNEW(...)@p;
+)
+
+
+// Flag any calls that aren't part of the above pattern.
+@enif_alloc_not_free@
+
+identifier FUNCVOID =~ "^(enif_mutex_destroy|enif_mutex_lock|enif_mutex_unlock|enif_rwlock_destroy|enif_rwlock_rlock|enif_rwlock_runlock|enif_rwlock_rwlock|enif_rwlock_rwunlock|enif_system_info)$";
+position pvoid != {erlang_check_void.p,enif_alloc_binary.pr};
+
+identifier FUNCNULL =~ "^(enif_alloc|enif_alloc_resource|enif_dlopen|enif_dlsym|enif_make_new_binary|enif_mutex_create|enif_open_resource_type|enif_realloc|enif_rwlock_create)$";
+position pnull != {erlang_check_null.p,enif_alloc_resource.p};
+
+identifier FUNCNOT =~ "^(enif_alloc_binary|enif_get_int|enif_get_list_cell|enif_get_list_length|enif_get_long|enif_get_map_value|enif_get_resource|enif_get_tuple|enif_get_uint|enif_get_ulong|enif_inspect_binary|enif_inspect_iolist_as_binary|enif_is_atom|enif_is_binary|enif_is_current_process_alive|enif_is_empty_list|enif_is_list|enif_is_map|enif_is_tuple|enif_realloc_binary)$";
+position pnot != {erlang_check_not.p,enif_alloc_binary.pa};
+
+identifier FUNCNEW =~ "^(enif_make_atom|enif_make_badarg|enif_make_binary|enif_make_int|enif_make_list|enif_make_list_from_array|enif_make_resource|enif_make_tuple|enif_raise_exception|enif_schedule_nif|enif_thread_self)$";
+position pnew != {erlang_check_new.p,enif_alloc_binary.pm};
+
+identifier FUNCFREE =~ "^(enif_free|enif_free_env|enif_free_iovec|enif_release_binary|enif_release_resource)$";
+position pfree != {enif_alloc_resource.pr,enif_alloc_binary.pr,erlang_check_null_free.p};
+
+@@
+
+(
+* FUNCVOID(...)@pvoid
+|
+* FUNCNULL(...)@pnull
+|
+* FUNCNOT(...)@pnot
+|
+* FUNCNEW(...)@pnew
+|
+* FUNCFREE(...)@pfree
+)
diff --git a/lib/crypto/c_src/check_openssl.cocci b/lib/crypto/c_src/check_openssl.cocci
new file mode 100644
index 0000000000..75d1a6e44b
--- /dev/null
+++ b/lib/crypto/c_src/check_openssl.cocci
@@ -0,0 +1,281 @@
+// %CopyrightBegin%
+//
+// Copyright Doug Hogan 2019. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// %CopyrightEnd%
+
+// Coccinelle script to help verify the subset of OpenSSL calls used by Erlang.
+// http://coccinelle.lip6.fr
+// https://github.com/coccinelle/coccinelle
+//
+// These work with the Erlang code because it has a rigid coding pattern.
+// $ spatch.opt --all-includes -sp_file check_openssl.cocci -dir .
+
+// TODO: These APIs may not have a single check that covers all cases
+// or may not be necessary to check.
+//
+// BN_GENCB_get_arg
+// BN_bn2bin
+// BN_cmp
+// BN_is_bit_set
+// BN_is_negative
+// BN_is_zero
+// BN_num_bits
+// DH_get0_key
+// DH_size
+// EC_GROUP_get_degree
+// EC_KEY_get0_group
+// EC_KEY_get0_private_key
+// EC_KEY_get0_public_key
+// EC_KEY_get_conv_form
+// EVP_CIPHER_block_size
+// EVP_CIPHER_iv_length
+// EVP_CIPHER_type
+// EVP_MD_CTX_md
+// EVP_MD_size
+// EVP_aes_128_cbc
+// EVP_aes_128_ccm
+// EVP_aes_128_cfb128
+// EVP_aes_128_cfb8
+// EVP_aes_128_ctr
+// EVP_aes_128_ecb
+// EVP_aes_128_gcm
+// EVP_aes_192_cbc
+// EVP_aes_192_ccm
+// EVP_aes_192_ctr
+// EVP_aes_192_ecb
+// EVP_aes_192_gcm
+// EVP_aes_256_cbc
+// EVP_aes_256_ccm
+// EVP_aes_256_ctr
+// EVP_aes_256_ecb
+// EVP_aes_256_gcm
+// EVP_bf_cbc
+// EVP_bf_cfb64
+// EVP_bf_ecb
+// EVP_bf_ofb
+// EVP_chacha20
+// EVP_chacha20_poly1305
+// EVP_des_cbc
+// EVP_des_cfb8
+// EVP_des_ecb
+// EVP_des_ede3_cbc
+// EVP_des_ede3_cfb8
+// EVP_md4
+// EVP_md5
+// EVP_rc2_cbc
+// EVP_ripemd160
+// EVP_sha1
+// EVP_sha224
+// EVP_sha256
+// EVP_sha384
+// EVP_sha3_224
+// EVP_sha3_256
+// EVP_sha3_384
+// EVP_sha3_512
+// EVP_sha512
+// OpenSSL_version
+// OpenSSL_version_num
+// PEM_read_PrivateKey
+// PEM_read_PUBKEY
+// RSA_size
+
+// Unusual API for OpenSSL: 0 or positive on success and negative value(s) on error.
+@openssl_check_negative@
+identifier FUNCNEG =~ "^(DH_compute_key|RSA_padding_check_SSLv23)$";
+expression X;
+identifier L;
+position p;
+@@
+
+  if (
+(
+  FUNCNEG(...)@p < 0
+|
+  (X = FUNCNEG(...)@p) < 0
+)
+  )
+      goto L;
+
+// Unusual API for OpenSSL: positive on success or else error
+@openssl_check_positive@
+identifier FUNCPOS =~ "^(ECDH_compute_key|EVP_CIPHER_asn1_to_param|EVP_CIPHER_param_to_asn1|EVP_PKEY_CTX_ctrl|RSA_pkey_ctx_ctrl)$";
+identifier L;
+expression X;
+position p;
+@@
+
+  if (
+(
+  FUNCPOS(...)@p < 1
+|
+  (X = FUNCPOS(...)@p) < 1
+)
+  )
+      goto L;
+
+// Unusual API for OpenSSL: 0=success.
+@openssl_check_0@
+identifier L;
+expression X;
+identifier FUNC0 =~ "^(AES_set_decrypt_key|AES_set_encrypt_key|CRYPTO_gcm128_aad|CRYPTO_gcm128_decrypt|CRYPTO_gcm128_finish)$";
+position p;
+@@
+
+  if (
+(
+  FUNC0(...)@p != 0
+|
+  (X = FUNC0(...)@p) != 0
+)
+  )
+      goto L;
+
+// These do not necessarily allocate resources but they may return NULL.
+@openssl_check_null@
+expression X;
+identifier L;
+identifier FUNCNULL =~ "^(BN_CTX_new|BN_GENCB_new|BN_MONT_CTX_new|BN_bin2bn|BN_dup|BN_generate_prime|BN_new|CMAC_CTX_new|CRYPTO_clear_realloc|CRYPTO_gcm128_new|CRYPTO_malloc|CRYPTO_realloc|CRYPTO_zalloc|DH_generate_parameters|DH_new|DSA_new|EC_GROUP_dup|EC_GROUP_get0_generator|EC_GROUP_method_of|EC_GROUP_new_curve_GFm|EC_GROUP_new_curve_GFp|EC_KEY_copy|EC_KEY_dup|EC_KEY_get0_engine|EC_KEY_new|EC_KEY_new_by_curve_name|EC_POINT_bn2point|EC_POINT_dup|EC_POINT_new|EC_POINT_point2bn|ENGINE_by_id|ENGINE_get_cipher_engine|ENGINE_get_default_DH|ENGINE_get_default_DSA|ENGINE_get_default_RAND|ENGINE_get_default_RSA|ENGINE_get_digest_engine|ENGINE_get_first|ENGINE_get_id|ENGINE_get_last|ENGINE_get_name|ENGINE_get_next|ENGINE_get_prev|ENGINE_load_private_key|ENGINE_load_public_key|ENGINE_new|EVP_CIPHER_CTX_new|EVP_MAC_CTX_new|EVP_MAC_CTX_new_id|EVP_MD_CTX_new|EVP_MD_meth_new|EVP_PKEY_CTX_new|EVP_PKEY_CTX_new_id|EVP_PKEY_get1_DH|EVP_PKEY_get1_DSA|EVP_PKEY_get1_EC_KEY|EVP_PKEY_get1_RSA|EVP_PKEY_new|EVP_PKEY_new_raw_private_key|EVP_PKEY_new_raw_public_key|EVP_get_cipherbyname|EVP_get_cipherbynid|EVP_get_cipherbyobj|EVP_get_macbyname|EVP_get_macbynid|EVP_get_macbyobj|HMAC|HMAC_CTX_new|OPENSSL_buf2hexstr|OPENSSL_clear_realloc|OPENSSL_hexstr2buf|OPENSSL_malloc|OPENSSL_realloc|OPENSSL_strdup|OPENSSL_strndup|OPENSSL_zalloc|RSA_meth_dup|RSA_meth_new|RSA_new)$";
+position p;
+@@
+
+(
+  if ((X = FUNCNULL(...)@p) == NULL)
+      goto L;
+|
+  X = FUNCNULL(...)@p;
+  if (X == NULL)
+      goto L;
+)
+
+// non-zero=success, 0=failure.  These can be safely used with !
+@openssl_check_not@
+expression X;
+identifier L;
+identifier FUNCNOT =~ "^(BN_add|BN_div|BN_exp|BN_from_montgomery|BN_gcd|BN_generate_prime_ex|BN_mod|BN_mod_add|BN_mod_exp|BN_mod_mul|BN_mod_mul_montgomery|BN_mod_sqr|BN_mod_sub|BN_mul|BN_nnmod|BN_priv_rand|BN_priv_rand_range|BN_pseudo_rand|BN_pseudo_rand_range|BN_rand|BN_rand_range|BN_set_bit|BN_set_word|BN_sqr|BN_sub|BN_to_montgomery|CMAC_Final|CMAC_Init|CMAC_Update|CRYPTO_set_mem_debug|CRYPTO_set_mem_functions|DH_check|DH_check_ex|DH_check_params|DH_check_pub_key_ex|DH_generate_key|DH_generate_parameters_ex|DH_set0_key|DH_set0_pqg|DH_set_length|DSA_set0_key|DSA_set0_pqg|EC_GROUP_check|EC_GROUP_check_discriminant|EC_GROUP_copy|EC_GROUP_get_curve_name|EC_GROUP_get_pentanomial_basis|EC_GROUP_get_trinomial_basis|EC_GROUP_precompute_mult|EC_GROUP_set_generator|EC_GROUP_set_seed|EC_KEY_check_key|EC_KEY_generate_key|EC_KEY_key2buf|EC_KEY_oct2key|EC_KEY_oct2priv|EC_KEY_precompute_mult|EC_KEY_priv2buf|EC_KEY_priv2oct|EC_KEY_set_group|EC_KEY_set_private_key|EC_KEY_set_public_key|EC_KEY_set_public_key_affine_coordinates|EC_KEY_up_ref|EC_POINT_add|EC_POINT_copy|EC_POINT_dbl|EC_POINT_get_Jprojective_coordinates_GFp|EC_POINT_get_affine_coordinates_GF2m|EC_POINT_get_affine_coordinates_GFp|EC_POINT_invert|EC_POINT_make_affine|EC_POINT_mul|EC_POINT_oct2point|EC_POINT_point2oct|EC_POINT_set_Jprojective_coordinates_GFp|EC_POINT_set_affine_coordinates_GF2m|EC_POINT_set_affine_coordinates_GFp|EC_POINT_set_compressed_coordinates_GF2m|EC_POINT_set_compressed_coordinates_GFp|EC_POINT_set_to_infinity|EC_POINTs_make_affine|EC_POINTs_mul|ENGINE_add|ENGINE_ctrl_cmd|ENGINE_ctrl_cmd_string|ENGINE_finish|ENGINE_free|ENGINE_init|ENGINE_register_DH|ENGINE_register_DSA|ENGINE_register_EC|ENGINE_register_RAND|ENGINE_register_RSA|ENGINE_register_all_complete|ENGINE_register_ciphers|ENGINE_register_complete|ENGINE_register_digests|ENGINE_register_pkey_asn1_meths|ENGINE_register_pkey_meths|ENGINE_remove|ENGINE_set_RSA|ENGINE_set_default|ENGINE_set_default_DH|ENGINE_set_default_DSA|ENGINE_set_default_EC|ENGINE_set_default_RAND|ENGINE_set_default_RSA|ENGINE_set_digests|ENGINE_set_id|ENGINE_set_init_function|ENGINE_set_load_privkey_function|ENGINE_set_load_pubkey_function|ENGINE_set_name|ENGINE_up_ref|HMAC_CTX_copy|HMAC_CTX_reset|HMAC_Final|HMAC_Init_ex|HMAC_Update|MD2_Init|MD2_Update|MD2_Final|MD4_Init|MD4_Update|MD4_Final|MD5_Init|MD5_Update|MD5_Final|OPENSSL_init_crypto|OPENSSL_mem_debug_pop|OPENSSL_mem_debug_push|RSA_generate_key_ex|RSA_generate_multi_prime_key|RSA_meth_set_finish|RSA_meth_set_sign|RSA_meth_set_verify|RSA_padding_add_SSLv23|RSA_set0_crt_params|RSA_set0_factors|RSA_set0_key|RSA_set0_multi_prime_params)$";
+position p;
+@@
+
+  if (
+(
+  !FUNCNOT(...)@p
+|
+  !(X = FUNCNOT)@p
+)
+  )
+      goto L;
+
+// 1=success.  These may have == 0 or <= 0 or non-one failure so we explicitly check for success.
+// Since some EVP_* functions use failure == 0 and others use <= 0, we consolidate all
+// EVP_* calls into here so it's less error prone.  In such cases, they all use 1 for success.
+@openssl_check_1@
+expression X;
+identifier L;
+identifier FUNC1 =~ "^(EVP_CIPHER_CTX_copy|EVP_CIPHER_CTX_ctrl|EVP_CIPHER_CTX_rand_key|EVP_CIPHER_CTX_reset|EVP_CIPHER_CTX_set_key_length|EVP_CIPHER_CTX_set_padding|EVP_CipherFinal_ex|EVP_CipherInit_ex|EVP_CipherUpdate|EVP_DecryptFinal_ex|EVP_DecryptInit_ex|EVP_DecryptUpdate|EVP_Digest|EVP_DigestFinal|EVP_DigestFinal_ex|EVP_DigestInit|EVP_DigestInit_ex|EVP_DigestSign|EVP_DigestSignInit|EVP_DigestSignUpdate|EVP_DigestSignaFinal|EVP_DigestUpdate|EVP_DigestVerify|EVP_DigestVerifyInit|EVP_EncryptFinal_ex|EVP_EncryptInit_ex|EVP_EncryptUpdate|EVP_MAC_CTX_copy|EVP_MAC_ctrl|EVP_MAC_ctrl_str|EVP_MAC_hex2ctrl|EVP_MAC_init|EVP_MAC_reset|EVP_MAC_str2ctrl|EVP_MAC_update|EVP_MD_CTX_copy|EVP_MD_CTX_copy_ex|EVP_MD_CTX_ctrl|EVP_MD_meth_set_app_datasize|EVP_MD_meth_set_cleanup|EVP_MD_meth_set_copy|EVP_MD_meth_set_ctrl|EVP_MD_meth_set_final|EVP_MD_meth_set_flags|EVP_MD_meth_set_init|EVP_MD_meth_set_input_blocksize|EVP_MD_meth_set_result_size|EVP_MD_meth_set_update|EVP_PKEY_CTX_set_rsa_mgf1_md|EVP_PKEY_CTX_set_rsa_padding|EVP_PKEY_CTX_set_rsa_pss_saltlen|EVP_PKEY_CTX_set_signature|EVP_PKEY_assign|EVP_PKEY_assign_DSA|EVP_PKEY_assign_EC_KEY|EVP_PKEY_assign_RSA|EVP_PKEY_decrypt|EVP_PKEY_decrypt_init|EVP_PKEY_derive|EVP_PKEY_derive_init|EVP_PKEY_derive_set_peer|EVP_PKEY_encrypt|EVP_PKEY_encrypt_init|EVP_PKEY_get1_DH|EVP_PKEY_get_raw_private_key|EVP_PKEY_get_raw_public_key|EVP_PKEY_keygen|EVP_PKEY_keygen_init|EVP_PKEY_set1_DH|EVP_PKEY_sign|EVP_PKEY_sign_init|EVP_PKEY_verify|EVP_PKEY_verify_init|EVP_PKEY_verify_recover|EVP_PKEY_verify_recover_init|EVP_add_mac|RAND_bytes|RAND_priv_bytes)$";
+position p;
+@@
+
+  if (
+(
+  FUNC1(...)@p != 1
+|
+  (X = FUNC1(...)@p) != 1
+)
+  )
+      goto L;
+
+
+// These are void but here for completeness
+@openssl_void@
+identifier FUNCVOID =~ "^(AES_cfb128_encrypt|AES_cfb8_encrypt|AES_ige_encrypt|BN_GENCB_set|DSA_get0_key|DSA_get0_pqg|EC_GROUP_set_asn1_flag|EC_GROUP_set_point_conversion_form|ENGINE_get_static_state|ENGINE_unregister_DH|ENGINE_unregister_DSA|ENGINE_unregister_EC|ENGINE_unregister_RAND|ENGINE_unregister_RSA|ENGINE_unregister_ciphers|ENGINE_unregister_digests|ENGINE_unregister_pkey_asn1_meths|ENGINE_unregister_pkey_meths|OpenSSL_add_all_ciphers|OpenSSL_add_all_digests|RAND_seed|RC4|RC4_set_key|RSA_get0_crt_params|RSA_get0_factors|RSA_get0_key)$";
+position p;
+@@
+
+  FUNCVOID(...)@p;
+
+
+// Traditionally, OpenSSL didn't adhere to the semantics of free() calls
+// allowing for NULL.  However, they have been changing it over time.
+// Since Erlang allows for unmaintained versions of OpenSSL, be conservative
+// and assume the worst.
+@openssl_free@
+expression X;
+identifier FUNCFREE =~ "^(BN_CTX_free|BN_GENCB_free|BN_clear_free|BN_free|CMAC_CTX_free|CRYPTO_free|DH_free|DSA_free|EC_GROUP_free|EC_KEY_free|EC_POINT_free|EVP_CIPHER_CTX_free|EVP_MD_CTX_free|EVP_PKEY_CTX_free|EVP_PKEY_free|HMAC_CTX_free|RSA_free|RSA_meth_free)$";
+position p;
+@@
+
+  if (
+(
+  X
+|
+  X != NULL
+)
+  )
+      FUNCFREE(X)@p;
+
+
+// NOTE: Keep these in sync with the above definitions!
+//
+// Find all of the cases that we haven't marked safe positions of.
+//
+// This will flag a few false positives because the code isn't using the
+// standard pattern.
+//
+// NOTE: You have to copy the regexps because there doesn't appear to be a way in
+// coccinelle to reference a regexp identifier from another rule properly.
+@openssl_check_NOT_SAFE@
+
+identifier FUNCNEG =~ "^(DH_compute_key|RSA_padding_check_SSLv23)$";
+position pneg != openssl_check_negative.p;
+
+identifier FUNCPOS =~ "^(ECDH_compute_key|EVP_CIPHER_asn1_to_param|EVP_CIPHER_param_to_asn1|EVP_PKEY_CTX_ctrl|RSA_pkey_ctx_ctrl)$";
+position ppos != openssl_check_positive.p;
+
+identifier FUNC0 =~ "^(AES_set_decrypt_key|AES_set_encrypt_key|CRYPTO_gcm128_aad|CRYPTO_gcm128_decrypt|CRYPTO_gcm128_finish)$";
+position p0 != openssl_check_0.p;
+
+identifier FUNCNULL =~ "^(BN_CTX_new|BN_GENCB_new|BN_MONT_CTX_new|BN_bin2bn|BN_dup|BN_generate_prime|BN_new|CMAC_CTX_new|CRYPTO_clear_realloc|CRYPTO_gcm128_new|CRYPTO_malloc|CRYPTO_realloc|CRYPTO_zalloc|DH_generate_parameters|DH_new|DSA_new|EC_GROUP_dup|EC_GROUP_get0_generator|EC_GROUP_method_of|EC_GROUP_new_curve_GFm|EC_GROUP_new_curve_GFp|EC_KEY_copy|EC_KEY_dup|EC_KEY_get0_engine|EC_KEY_new|EC_KEY_new_by_curve_name|EC_POINT_bn2point|EC_POINT_dup|EC_POINT_new|EC_POINT_point2bn|ENGINE_by_id|ENGINE_get_cipher_engine|ENGINE_get_default_DH|ENGINE_get_default_DSA|ENGINE_get_default_RAND|ENGINE_get_default_RSA|ENGINE_get_digest_engine|ENGINE_get_first|ENGINE_get_id|ENGINE_get_last|ENGINE_get_name|ENGINE_get_next|ENGINE_get_prev|ENGINE_load_private_key|ENGINE_load_public_key|ENGINE_new|EVP_CIPHER_CTX_new|EVP_MAC_CTX_new|EVP_MAC_CTX_new_id|EVP_MD_CTX_new|EVP_MD_meth_new|EVP_PKEY_CTX_new|EVP_PKEY_CTX_new_id|EVP_PKEY_get1_DH|EVP_PKEY_get1_DSA|EVP_PKEY_get1_EC_KEY|EVP_PKEY_get1_RSA|EVP_PKEY_new|EVP_PKEY_new_raw_private_key|EVP_PKEY_new_raw_public_key|EVP_get_cipherbyname|EVP_get_cipherbynid|EVP_get_cipherbyobj|EVP_get_macbyname|EVP_get_macbynid|EVP_get_macbyobj|HMAC|HMAC_CTX_new|OPENSSL_buf2hexstr|OPENSSL_clear_realloc|OPENSSL_hexstr2buf|OPENSSL_malloc|OPENSSL_realloc|OPENSSL_strdup|OPENSSL_strndup|OPENSSL_zalloc|RSA_meth_dup|RSA_meth_new|RSA_new)$";
+position pnull != openssl_check_null.p;
+
+identifier FUNCNOT =~ "^(BN_add|BN_div|BN_exp|BN_from_montgomery|BN_gcd|BN_generate_prime_ex|BN_mod|BN_mod_add|BN_mod_exp|BN_mod_mul|BN_mod_mul_montgomery|BN_mod_sqr|BN_mod_sub|BN_mul|BN_nnmod|BN_priv_rand|BN_priv_rand_range|BN_pseudo_rand|BN_pseudo_rand_range|BN_rand|BN_rand_range|BN_set_bit|BN_set_word|BN_sqr|BN_sub|BN_to_montgomery|CMAC_Final|CMAC_Init|CMAC_Update|CRYPTO_set_mem_debug|CRYPTO_set_mem_functions|DH_check|DH_check_ex|DH_check_params|DH_check_pub_key_ex|DH_generate_key|DH_generate_parameters_ex|DH_set0_key|DH_set0_pqg|DH_set_length|DSA_set0_key|DSA_set0_pqg|EC_GROUP_check|EC_GROUP_check_discriminant|EC_GROUP_copy|EC_GROUP_get_curve_name|EC_GROUP_get_pentanomial_basis|EC_GROUP_get_trinomial_basis|EC_GROUP_precompute_mult|EC_GROUP_set_generator|EC_GROUP_set_seed|EC_KEY_check_key|EC_KEY_generate_key|EC_KEY_key2buf|EC_KEY_oct2key|EC_KEY_oct2priv|EC_KEY_precompute_mult|EC_KEY_priv2buf|EC_KEY_priv2oct|EC_KEY_set_group|EC_KEY_set_private_key|EC_KEY_set_public_key|EC_KEY_set_public_key_affine_coordinates|EC_KEY_up_ref|EC_POINT_add|EC_POINT_copy|EC_POINT_dbl|EC_POINT_get_Jprojective_coordinates_GFp|EC_POINT_get_affine_coordinates_GF2m|EC_POINT_get_affine_coordinates_GFp|EC_POINT_invert|EC_POINT_make_affine|EC_POINT_mul|EC_POINT_oct2point|EC_POINT_point2oct|EC_POINT_set_Jprojective_coordinates_GFp|EC_POINT_set_affine_coordinates_GF2m|EC_POINT_set_affine_coordinates_GFp|EC_POINT_set_compressed_coordinates_GF2m|EC_POINT_set_compressed_coordinates_GFp|EC_POINT_set_to_infinity|EC_POINTs_make_affine|EC_POINTs_mul|ENGINE_add|ENGINE_ctrl_cmd|ENGINE_ctrl_cmd_string|ENGINE_finish|ENGINE_free|ENGINE_init|ENGINE_register_DH|ENGINE_register_DSA|ENGINE_register_EC|ENGINE_register_RAND|ENGINE_register_RSA|ENGINE_register_all_complete|ENGINE_register_ciphers|ENGINE_register_complete|ENGINE_register_digests|ENGINE_register_pkey_asn1_meths|ENGINE_register_pkey_meths|ENGINE_remove|ENGINE_set_RSA|ENGINE_set_default|ENGINE_set_default_DH|ENGINE_set_default_DSA|ENGINE_set_default_EC|ENGINE_set_default_RAND|ENGINE_set_default_RSA|ENGINE_set_digests|ENGINE_set_id|ENGINE_set_init_function|ENGINE_set_load_privkey_function|ENGINE_set_load_pubkey_function|ENGINE_set_name|ENGINE_up_ref|HMAC_CTX_copy|HMAC_CTX_reset|HMAC_Final|HMAC_Init_ex|HMAC_Update|MD2_Init|MD2_Update|MD2_Final|MD4_Init|MD4_Update|MD4_Final|MD5_Init|MD5_Update|MD5_Final|OPENSSL_init_crypto|OPENSSL_mem_debug_pop|OPENSSL_mem_debug_push|RSA_generate_key_ex|RSA_generate_multi_prime_key|RSA_meth_set_finish|RSA_meth_set_sign|RSA_meth_set_verify|RSA_padding_add_SSLv23|RSA_set0_crt_params|RSA_set0_factors|RSA_set0_key|RSA_set0_multi_prime_params)$";
+position pnot != openssl_check_not.p;
+
+identifier FUNC1 =~ "^(EVP_CIPHER_CTX_copy|EVP_CIPHER_CTX_ctrl|EVP_CIPHER_CTX_rand_key|EVP_CIPHER_CTX_reset|EVP_CIPHER_CTX_set_key_length|EVP_CIPHER_CTX_set_padding|EVP_CipherFinal_ex|EVP_CipherInit_ex|EVP_CipherUpdate|EVP_DecryptFinal_ex|EVP_DecryptInit_ex|EVP_DecryptUpdate|EVP_Digest|EVP_DigestFinal|EVP_DigestFinal_ex|EVP_DigestInit|EVP_DigestInit_ex|EVP_DigestSign|EVP_DigestSignInit|EVP_DigestSignUpdate|EVP_DigestSignaFinal|EVP_DigestUpdate|EVP_DigestVerify|EVP_DigestVerifyInit|EVP_EncryptFinal_ex|EVP_EncryptInit_ex|EVP_EncryptUpdate|EVP_MAC_CTX_copy|EVP_MAC_ctrl|EVP_MAC_ctrl_str|EVP_MAC_hex2ctrl|EVP_MAC_init|EVP_MAC_reset|EVP_MAC_str2ctrl|EVP_MAC_update|EVP_MD_CTX_copy|EVP_MD_CTX_copy_ex|EVP_MD_CTX_ctrl|EVP_MD_meth_set_app_datasize|EVP_MD_meth_set_cleanup|EVP_MD_meth_set_copy|EVP_MD_meth_set_ctrl|EVP_MD_meth_set_final|EVP_MD_meth_set_flags|EVP_MD_meth_set_init|EVP_MD_meth_set_input_blocksize|EVP_MD_meth_set_result_size|EVP_MD_meth_set_update|EVP_PKEY_CTX_set_rsa_mgf1_md|EVP_PKEY_CTX_set_rsa_padding|EVP_PKEY_CTX_set_rsa_pss_saltlen|EVP_PKEY_CTX_set_signature|EVP_PKEY_assign|EVP_PKEY_assign_DSA|EVP_PKEY_assign_EC_KEY|EVP_PKEY_assign_RSA|EVP_PKEY_decrypt|EVP_PKEY_decrypt_init|EVP_PKEY_derive|EVP_PKEY_derive_init|EVP_PKEY_derive_set_peer|EVP_PKEY_encrypt|EVP_PKEY_encrypt_init|EVP_PKEY_get1_DH|EVP_PKEY_get_raw_private_key|EVP_PKEY_get_raw_public_key|EVP_PKEY_keygen|EVP_PKEY_keygen_init|EVP_PKEY_set1_DH|EVP_PKEY_sign|EVP_PKEY_sign_init|EVP_PKEY_verify|EVP_PKEY_verify_init|EVP_PKEY_verify_recover|EVP_PKEY_verify_recover_init|EVP_add_mac|RAND_bytes|RAND_priv_bytes)$";
+position p1 != openssl_check_1.p;
+
+identifier FUNCVOID =~ "^(AES_cfb128_encrypt|AES_cfb8_encrypt|AES_ige_encrypt|BN_GENCB_set|DSA_get0_key|DSA_get0_pqg|EC_GROUP_set_asn1_flag|EC_GROUP_set_point_conversion_form|ENGINE_get_static_state|ENGINE_unregister_DH|ENGINE_unregister_DSA|ENGINE_unregister_EC|ENGINE_unregister_RAND|ENGINE_unregister_RSA|ENGINE_unregister_ciphers|ENGINE_unregister_digests|ENGINE_unregister_pkey_asn1_meths|ENGINE_unregister_pkey_meths|OpenSSL_add_all_ciphers|OpenSSL_add_all_digests|RAND_seed|RC4|RC4_set_key|RSA_get0_crt_params|RSA_get0_factors|RSA_get0_key)$";
+position pvoid != openssl_void.p;
+
+identifier FUNCFREE =~ "^(BN_CTX_free|BN_GENCB_free|BN_clear_free|BN_free|CMAC_CTX_free|CRYPTO_free|DH_free|DSA_free|EC_GROUP_free|EC_KEY_free|EC_POINT_free|EVP_CIPHER_CTX_free|EVP_MD_CTX_free|EVP_PKEY_CTX_free|EVP_PKEY_free|HMAC_CTX_free|RSA_free|RSA_meth_free)$";
+position pfree != openssl_free.p;
+@@
+
+(
+* FUNCNEG(...)@pneg
+|
+* FUNCPOS(...)@ppos
+|
+* FUNCNULL(...)@pnull
+|
+* FUNC0(...)@p0
+|
+* FUNC1(...)@p1
+|
+* FUNCNOT(...)@pnot
+|
+* FUNCVOID(...)@pvoid
+|
+* FUNCFREE(...)@pfree
+)
diff --git a/lib/crypto/c_src/cipher.c b/lib/crypto/c_src/cipher.c
new file mode 100644
index 0000000000..13de3562e8
--- /dev/null
+++ b/lib/crypto/c_src/cipher.c
@@ -0,0 +1,365 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#include "cipher.h"
+
+#ifdef OPENSSL_NO_DES
+#define COND_NO_DES_PTR(Ptr) (NULL)
+#else
+#define COND_NO_DES_PTR(Ptr) (Ptr)
+#endif
+
+static struct cipher_type_t cipher_types[] =
+{
+#ifdef HAVE_RC2
+    {{"rc2_cbc"}, {&EVP_rc2_cbc}, 0, NO_FIPS_CIPHER},
+#else
+    {{"rc2_cbc"}, {NULL}, 0, NO_FIPS_CIPHER},
+#endif
+#ifdef HAVE_RC4
+    {{"rc4"},     {&EVP_rc4}, 0, NO_FIPS_CIPHER},
+#else
+    {{"rc4"},     {NULL}, 0, NO_FIPS_CIPHER},
+#endif
+    {{"des_cbc"}, {COND_NO_DES_PTR(&EVP_des_cbc)}, 0, NO_FIPS_CIPHER},
+    {{"des_cfb"}, {COND_NO_DES_PTR(&EVP_des_cfb8)}, 0, NO_FIPS_CIPHER},
+    {{"des_ecb"}, {COND_NO_DES_PTR(&EVP_des_ecb)}, 0, NO_FIPS_CIPHER | ECB_BUG_0_9_8L},
+
+    {{"des_ede3_cbc"}, {COND_NO_DES_PTR(&EVP_des_ede3_cbc)}, 0, 0},
+
+#ifdef HAVE_DES_ede3_cfb_encrypt
+    {{"des_ede3_cfb"}, {COND_NO_DES_PTR(&EVP_des_ede3_cfb8)}, 0, 0},
+#else
+    {{"des_ede3_cfb"}, {NULL}, 0, 0},
+#endif
+
+    {{"blowfish_cbc"}, {&EVP_bf_cbc}, 0, NO_FIPS_CIPHER},
+    {{"blowfish_cfb64"}, {&EVP_bf_cfb64}, 0, NO_FIPS_CIPHER},
+    {{"blowfish_ofb64"}, {&EVP_bf_ofb}, 0, NO_FIPS_CIPHER},
+    {{"blowfish_ecb"}, {&EVP_bf_ecb}, 0, NO_FIPS_CIPHER | ECB_BUG_0_9_8L},
+
+    {{"aes_cbc"}, {&EVP_aes_128_cbc}, 16, 0},
+    {{"aes_cbc"}, {&EVP_aes_192_cbc}, 24, 0},
+    {{"aes_cbc"}, {&EVP_aes_256_cbc}, 32, 0},
+
+    {{"aes_128_cbc"}, {&EVP_aes_128_cbc}, 16, 0},
+    {{"aes_192_cbc"}, {&EVP_aes_192_cbc}, 24, 0},
+    {{"aes_256_cbc"}, {&EVP_aes_256_cbc}, 32, 0},
+
+    {{"aes_cfb8"}, {&EVP_aes_128_cfb8}, 16, NO_FIPS_CIPHER | AES_CFBx},
+    {{"aes_cfb8"}, {&EVP_aes_192_cfb8}, 24, NO_FIPS_CIPHER | AES_CFBx},
+    {{"aes_cfb8"}, {&EVP_aes_256_cfb8}, 32, NO_FIPS_CIPHER | AES_CFBx},
+
+    {{"aes_128_cfb8"}, {&EVP_aes_128_cfb8}, 16, NO_FIPS_CIPHER | AES_CFBx},
+    {{"aes_192_cfb8"}, {&EVP_aes_192_cfb8}, 24, NO_FIPS_CIPHER | AES_CFBx},
+    {{"aes_256_cfb8"}, {&EVP_aes_256_cfb8}, 32, NO_FIPS_CIPHER | AES_CFBx},
+
+    {{"aes_cfb128"}, {&EVP_aes_128_cfb128}, 16, NO_FIPS_CIPHER | AES_CFBx},
+    {{"aes_cfb128"}, {&EVP_aes_192_cfb128}, 24, NO_FIPS_CIPHER | AES_CFBx},
+    {{"aes_cfb128"}, {&EVP_aes_256_cfb128}, 32, NO_FIPS_CIPHER | AES_CFBx},
+
+    {{"aes_128_cfb128"}, {&EVP_aes_128_cfb128}, 16, NO_FIPS_CIPHER | AES_CFBx},
+    {{"aes_192_cfb128"}, {&EVP_aes_192_cfb128}, 24, NO_FIPS_CIPHER | AES_CFBx},
+    {{"aes_256_cfb128"}, {&EVP_aes_256_cfb128}, 32, NO_FIPS_CIPHER | AES_CFBx},
+
+    {{"aes_ecb"}, {&EVP_aes_128_ecb}, 16, ECB_BUG_0_9_8L},
+    {{"aes_ecb"}, {&EVP_aes_192_ecb}, 24, ECB_BUG_0_9_8L},
+    {{"aes_ecb"}, {&EVP_aes_256_ecb}, 32, ECB_BUG_0_9_8L},
+
+    {{"aes_128_ecb"}, {&EVP_aes_128_ecb}, 16, ECB_BUG_0_9_8L},
+    {{"aes_192_ecb"}, {&EVP_aes_192_ecb}, 24, ECB_BUG_0_9_8L},
+    {{"aes_256_ecb"}, {&EVP_aes_256_ecb}, 32, ECB_BUG_0_9_8L},
+
+#if defined(HAVE_EVP_AES_CTR)
+    {{"aes_128_ctr"}, {&EVP_aes_128_ctr}, 16, 0},
+    {{"aes_192_ctr"}, {&EVP_aes_192_ctr}, 24, 0},
+    {{"aes_256_ctr"}, {&EVP_aes_256_ctr}, 32, 0},
+    {{"aes_ctr"},    {&EVP_aes_128_ctr}, 16, 0},
+    {{"aes_ctr"},    {&EVP_aes_192_ctr}, 24, 0},
+    {{"aes_ctr"},    {&EVP_aes_256_ctr}, 32, 0},
+#else
+    {{"aes_128_ctr"}, {NULL}, 16, AES_CTR_COMPAT},
+    {{"aes_192_ctr"}, {NULL}, 24, AES_CTR_COMPAT},
+    {{"aes_256_ctr"}, {NULL}, 32, AES_CTR_COMPAT},
+    {{"aes_ctr"},     {NULL}, 16, AES_CTR_COMPAT},
+    {{"aes_ctr"},     {NULL}, 24, AES_CTR_COMPAT},
+    {{"aes_ctr"},     {NULL}, 32, AES_CTR_COMPAT},
+#endif
+
+#if defined(HAVE_CHACHA20)
+    {{"chacha20"}, {&EVP_chacha20}, 32, NO_FIPS_CIPHER},
+#else
+    {{"chacha20"}, {NULL}, 0, NO_FIPS_CIPHER},
+#endif
+
+    /*==== AEAD ciphers ====*/
+#if defined(HAVE_CHACHA20_POLY1305)
+    {{"chacha20_poly1305"}, {&EVP_chacha20_poly1305}, 0, NO_FIPS_CIPHER | AEAD_CIPHER, {{EVP_CTRL_AEAD_SET_IVLEN,EVP_CTRL_AEAD_GET_TAG,EVP_CTRL_AEAD_SET_TAG}}},
+#else
+    {{"chacha20_poly1305"}, {NULL}, 0, NO_FIPS_CIPHER | AEAD_CIPHER, {{0,0,0}}},
+#endif
+
+#if defined(HAVE_GCM)
+    {{"aes_gcm"},     {&EVP_aes_128_gcm}, 16, AEAD_CIPHER|GCM_MODE, {{EVP_CTRL_GCM_SET_IVLEN,EVP_CTRL_GCM_GET_TAG,EVP_CTRL_GCM_SET_TAG}}},
+    {{"aes_gcm"},     {&EVP_aes_192_gcm}, 24, AEAD_CIPHER|GCM_MODE, {{EVP_CTRL_GCM_SET_IVLEN,EVP_CTRL_GCM_GET_TAG,EVP_CTRL_GCM_SET_TAG}}},
+    {{"aes_gcm"},     {&EVP_aes_256_gcm}, 32, AEAD_CIPHER|GCM_MODE, {{EVP_CTRL_GCM_SET_IVLEN,EVP_CTRL_GCM_GET_TAG,EVP_CTRL_GCM_SET_TAG}}},
+    {{"aes_128_gcm"}, {&EVP_aes_128_gcm}, 16, AEAD_CIPHER|GCM_MODE, {{EVP_CTRL_GCM_SET_IVLEN,EVP_CTRL_GCM_GET_TAG,EVP_CTRL_GCM_SET_TAG}}},
+    {{"aes_192_gcm"}, {&EVP_aes_192_gcm}, 24, AEAD_CIPHER|GCM_MODE, {{EVP_CTRL_GCM_SET_IVLEN,EVP_CTRL_GCM_GET_TAG,EVP_CTRL_GCM_SET_TAG}}},
+    {{"aes_256_gcm"}, {&EVP_aes_256_gcm}, 32, AEAD_CIPHER|GCM_MODE, {{EVP_CTRL_GCM_SET_IVLEN,EVP_CTRL_GCM_GET_TAG,EVP_CTRL_GCM_SET_TAG}}},
+#else
+    {{"aes_gcm"},     {NULL},  0, AEAD_CIPHER|GCM_MODE, {{0,0,0}}},
+    {{"aes_128_gcm"}, {NULL}, 16, AEAD_CIPHER|GCM_MODE, {{0,0,0}}},
+    {{"aes_192_gcm"}, {NULL}, 24, AEAD_CIPHER|GCM_MODE, {{0,0,0}}},
+    {{"aes_256_gcm"}, {NULL}, 32, AEAD_CIPHER|GCM_MODE, {{0,0,0}}},
+#endif
+
+#if defined(HAVE_CCM)
+    {{"aes_ccm"},     {&EVP_aes_128_ccm}, 16, AEAD_CIPHER|CCM_MODE, {{EVP_CTRL_CCM_SET_IVLEN,EVP_CTRL_CCM_GET_TAG,EVP_CTRL_CCM_SET_TAG}}},
+    {{"aes_ccm"},     {&EVP_aes_192_ccm}, 24, AEAD_CIPHER|CCM_MODE, {{EVP_CTRL_CCM_SET_IVLEN,EVP_CTRL_CCM_GET_TAG,EVP_CTRL_CCM_SET_TAG}}},
+    {{"aes_ccm"},     {&EVP_aes_256_ccm}, 32, AEAD_CIPHER|CCM_MODE, {{EVP_CTRL_CCM_SET_IVLEN,EVP_CTRL_CCM_GET_TAG,EVP_CTRL_CCM_SET_TAG}}},
+    {{"aes_128_ccm"}, {&EVP_aes_128_ccm}, 16, AEAD_CIPHER|CCM_MODE, {{EVP_CTRL_CCM_SET_IVLEN,EVP_CTRL_CCM_GET_TAG,EVP_CTRL_CCM_SET_TAG}}},
+    {{"aes_192_ccm"}, {&EVP_aes_192_ccm}, 24, AEAD_CIPHER|CCM_MODE, {{EVP_CTRL_CCM_SET_IVLEN,EVP_CTRL_CCM_GET_TAG,EVP_CTRL_CCM_SET_TAG}}},
+    {{"aes_256_ccm"}, {&EVP_aes_256_ccm}, 32, AEAD_CIPHER|CCM_MODE, {{EVP_CTRL_CCM_SET_IVLEN,EVP_CTRL_CCM_GET_TAG,EVP_CTRL_CCM_SET_TAG}}},
+#else
+    {{"aes_ccm"},     {NULL},  0, AEAD_CIPHER|CCM_MODE, {{0,0,0}}},
+    {{"aes_128_ccm"}, {NULL}, 16, AEAD_CIPHER|CCM_MODE, {{0,0,0}}},
+    {{"aes_192_ccm"}, {NULL}, 24, AEAD_CIPHER|CCM_MODE, {{0,0,0}}},
+    {{"aes_256_ccm"}, {NULL}, 32, AEAD_CIPHER|CCM_MODE, {{0,0,0}}},
+#endif
+
+    /*==== Specialy handled ciphers, only for inclusion in algorithm's list ====*/
+#ifdef HAVE_AES_IGE
+    {{"aes_ige256"}, {NULL}, 0, NO_FIPS_CIPHER | NON_EVP_CIPHER},
+#endif
+
+    /*==== End of list ==== */
+
+    {{NULL},{NULL},0,0}
+};
+
+ErlNifResourceType* evp_cipher_ctx_rtype;
+
+static size_t num_cipher_types = 0;
+
+static void evp_cipher_ctx_dtor(ErlNifEnv* env, struct evp_cipher_ctx* ctx) {
+    if (ctx == NULL)
+        return;
+
+    if (ctx->ctx)
+        EVP_CIPHER_CTX_free(ctx->ctx);
+
+#if !defined(HAVE_EVP_AES_CTR)
+    if (ctx->env)
+        enif_free_env(ctx->env);
+#endif
+}
+
+int init_cipher_ctx(ErlNifEnv *env) {
+    evp_cipher_ctx_rtype = enif_open_resource_type(env, NULL, "EVP_CIPHER_CTX",
+                                                   (ErlNifResourceDtor*) evp_cipher_ctx_dtor,
+                                                   ERL_NIF_RT_CREATE|ERL_NIF_RT_TAKEOVER,
+                                                   NULL);
+    if (evp_cipher_ctx_rtype == NULL)
+        goto err;
+
+    return 1;
+
+ err:
+    PRINTF_ERR0("CRYPTO: Could not open resource type 'EVP_CIPHER_CTX'");
+    return 0;
+}
+
+void init_cipher_types(ErlNifEnv* env)
+{
+    struct cipher_type_t* p = cipher_types;
+
+    num_cipher_types = 0;
+    for (p = cipher_types; p->type.str; p++) {
+        num_cipher_types++;
+	p->type.atom = enif_make_atom(env, p->type.str);
+	if (p->cipher.funcp)
+	    p->cipher.p = p->cipher.funcp();
+    }
+    p->type.atom = atom_false; /* end marker */
+
+    qsort(cipher_types, num_cipher_types, sizeof(cipher_types[0]), cmp_cipher_types);
+}
+
+const struct cipher_type_t* get_cipher_type(ERL_NIF_TERM type, size_t key_len)
+{
+    struct cipher_type_t key;
+
+    key.type.atom = type;
+    key.key_len = key_len;
+
+    return bsearch(&key, cipher_types, num_cipher_types, sizeof(cipher_types[0]), cmp_cipher_types);
+}
+
+
+int cmp_cipher_types(const void *keyp, const void *elemp) {
+    const struct cipher_type_t *key  = keyp;
+    const struct cipher_type_t *elem = elemp;
+
+    if (key->type.atom < elem->type.atom) return -1;
+    else if (key->type.atom > elem->type.atom) return 1;
+    else /* key->type.atom == elem->type.atom */
+        if (!elem->key_len || key->key_len == elem->key_len) return 0;
+        else if (key->key_len < elem->key_len) return -1;
+        else return 1;
+}
+
+
+ERL_NIF_TERM cipher_info_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Type) */
+    const struct cipher_type_t *cipherp;
+    const EVP_CIPHER     *cipher;
+    ERL_NIF_TERM         ret, ret_mode;
+    unsigned             type;
+    unsigned long        mode;
+
+    if ((cipherp = get_cipher_type_no_key(argv[0])) == NULL)
+        return enif_make_badarg(env);
+
+    if (FORBIDDEN_IN_FIPS(cipherp))
+        return enif_raise_exception(env, atom_notsup);
+    if ((cipher = cipherp->cipher.p) == NULL)
+        return enif_raise_exception(env, atom_notsup);
+
+    ret = enif_make_new_map(env);
+
+    type = EVP_CIPHER_type(cipher);
+    enif_make_map_put(env, ret, atom_type,
+        type == NID_undef ? atom_undefined : enif_make_int(env, type),
+        &ret);
+
+    enif_make_map_put(env, ret, atom_key_length,
+        enif_make_int(env, EVP_CIPHER_key_length(cipher)), &ret);
+    enif_make_map_put(env, ret, atom_iv_length,
+        enif_make_int(env, EVP_CIPHER_iv_length(cipher)), &ret);
+    enif_make_map_put(env, ret, atom_block_size,
+        enif_make_int(env, EVP_CIPHER_block_size(cipher)), &ret);
+
+    mode = EVP_CIPHER_mode(cipher);
+    switch (mode) {
+        case EVP_CIPH_ECB_MODE:
+            ret_mode = atom_ecb_mode;
+            break;
+
+        case EVP_CIPH_CBC_MODE:
+            ret_mode = atom_cbc_mode;
+            break;
+
+        case EVP_CIPH_CFB_MODE:
+            ret_mode = atom_cfb_mode;
+            break;
+
+        case EVP_CIPH_OFB_MODE:
+            ret_mode = atom_ofb_mode;
+            break;
+
+#ifdef EVP_CIPH_CTR_MODE
+        case EVP_CIPH_CTR_MODE:
+            ret_mode = atom_ctr_mode;
+            break;
+#endif
+
+#ifdef EVP_CIPH_GCM_MODE
+        case EVP_CIPH_GCM_MODE:
+            ret_mode = atom_gcm_mode;
+            break;
+#endif
+
+#ifdef EVP_CIPH_CCM_MODE
+        case EVP_CIPH_CCM_MODE:
+            ret_mode = atom_ccm_mode;
+            break;
+#endif
+
+#ifdef EVP_CIPH_XTS_MODE
+        case EVP_CIPH_XTS_MODE:
+            ret_mode = atom_xts_mode;
+            break;
+#endif
+
+#ifdef EVP_CIPH_WRAP_MODE
+        case EVP_CIPH_WRAP_MODE:
+            ret_mode = atom_wrap_mode;
+            break;
+#endif
+
+#ifdef EVP_CIPH_OCB_MODE
+        case EVP_CIPH_OCB_MODE:
+            ret_mode = atom_ocb_mode;
+            break;
+#endif
+
+        case EVP_CIPH_STREAM_CIPHER:
+            ret_mode = atom_stream_cipher;
+            break;
+
+        default:
+            ret_mode = atom_undefined;
+            break;
+    }
+
+    enif_make_map_put(env, ret, atom_mode, ret_mode, &ret);
+
+    return ret;
+}
+
+const struct cipher_type_t* get_cipher_type_no_key(ERL_NIF_TERM type)
+{
+    struct cipher_type_t key;
+
+    key.type.atom = type;
+
+    return bsearch(&key, cipher_types, num_cipher_types, sizeof(cipher_types[0]), cmp_cipher_types_no_key);
+}
+
+int cmp_cipher_types_no_key(const void *keyp, const void *elemp) {
+    const struct cipher_type_t *key  = keyp;
+    const struct cipher_type_t *elem = elemp;
+
+    if (key->type.atom < elem->type.atom) return -1;
+    else if (key->type.atom > elem->type.atom) return 1;
+    else /* key->type.atom == elem->type.atom */ return 0;
+}
+
+
+ERL_NIF_TERM cipher_types_as_list(ErlNifEnv* env)
+{
+    struct cipher_type_t* p;
+    ERL_NIF_TERM prev, hd;
+
+    hd = enif_make_list(env, 0);
+    prev = atom_undefined;
+
+    for (p = cipher_types; (p->type.atom & (p->type.atom != atom_false)); p++) {
+        if ((prev != p->type.atom) &&
+            ((p->cipher.p != NULL) ||
+             (p->flags & (NON_EVP_CIPHER|AES_CTR_COMPAT)) ) && /* Special handling. Bad indeed... */
+            ! FORBIDDEN_IN_FIPS(p)
+            )
+        hd = enif_make_list_cell(env, p->type.atom, hd);
+        prev = p->type.atom;
+    }
+
+    return hd;
+}
diff --git a/lib/crypto/c_src/cipher.h b/lib/crypto/c_src/cipher.h
new file mode 100644
index 0000000000..0e51c410eb
--- /dev/null
+++ b/lib/crypto/c_src/cipher.h
@@ -0,0 +1,84 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifndef E_CIPHER_H__
+#define E_CIPHER_H__ 1
+
+#include "common.h"
+
+struct cipher_type_t {
+    union {
+	const char* str;    /* before init */
+	ERL_NIF_TERM atom;  /* after init */
+    }type;
+    union {
+	const EVP_CIPHER* (*funcp)(void); /* before init, NULL if notsup */
+	const EVP_CIPHER* p;              /* after init, NULL if notsup */
+    }cipher;
+    size_t key_len;      /* != 0 to also match on key_len */
+    unsigned flags;
+    union {
+        struct aead_ctrl {int ctx_ctrl_set_ivlen, ctx_ctrl_get_tag,  ctx_ctrl_set_tag;} aead;
+    } extra;
+};
+
+/* masks in the flags field if cipher_type_t */
+#define NO_FIPS_CIPHER 1
+#define AES_CFBx 2
+#define ECB_BUG_0_9_8L 4
+#define AEAD_CIPHER 8
+#define NON_EVP_CIPHER 16
+#define AES_CTR_COMPAT 32
+#define CCM_MODE 64
+#define GCM_MODE 128
+
+
+#ifdef FIPS_SUPPORT
+/* May have FIPS support, must check dynamically if it is enabled */
+# define FORBIDDEN_IN_FIPS(P) (((P)->flags & NO_FIPS_CIPHER) && FIPS_mode())
+#else
+/* No FIPS support since the symbol FIPS_SUPPORT is undefined */
+# define FORBIDDEN_IN_FIPS(P) 0
+#endif
+
+extern ErlNifResourceType* evp_cipher_ctx_rtype;
+struct evp_cipher_ctx {
+    EVP_CIPHER_CTX* ctx;
+    int iv_len;
+#if !defined(HAVE_EVP_AES_CTR)
+    ErlNifEnv* env;
+    ERL_NIF_TERM state;
+#endif
+};
+
+ERL_NIF_TERM cipher_info_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+
+int init_cipher_ctx(ErlNifEnv *env);
+
+void init_cipher_types(ErlNifEnv* env);
+const struct cipher_type_t* get_cipher_type_no_key(ERL_NIF_TERM type);
+const struct cipher_type_t* get_cipher_type(ERL_NIF_TERM type, size_t key_len);
+
+int cmp_cipher_types(const void *keyp, const void *elemp);
+int cmp_cipher_types_no_key(const void *keyp, const void *elemp);
+
+ERL_NIF_TERM cipher_types_as_list(ErlNifEnv* env);
+
+#endif /* E_CIPHER_H__ */
diff --git a/lib/crypto/c_src/cmac.c b/lib/crypto/c_src/cmac.c
new file mode 100644
index 0000000000..49e67ccf29
--- /dev/null
+++ b/lib/crypto/c_src/cmac.c
@@ -0,0 +1,88 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#include "cmac.h"
+#include "cipher.h"
+
+ERL_NIF_TERM cmac_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Type, Key, Data) */
+#if defined(HAVE_CMAC)
+    const struct cipher_type_t *cipherp;
+    const EVP_CIPHER     *cipher;
+    CMAC_CTX             *ctx = NULL;
+    ErlNifBinary         key;
+    ErlNifBinary         data;
+    ERL_NIF_TERM         ret;
+    size_t               ret_size;
+    unsigned char       *outp;
+    int                  cipher_len;
+
+    ASSERT(argc == 3);
+
+    if (!enif_inspect_iolist_as_binary(env, argv[1], &key))
+        goto bad_arg;
+    if ((cipherp = get_cipher_type(argv[0], key.size)) == NULL)
+        goto bad_arg;
+    if (cipherp->flags & (NON_EVP_CIPHER | AEAD_CIPHER))
+        goto bad_arg;
+    if (!enif_inspect_iolist_as_binary(env, argv[2], &data))
+        goto bad_arg;
+
+    if (FORBIDDEN_IN_FIPS(cipherp))
+        return enif_raise_exception(env, atom_notsup);
+    if ((cipher = cipherp->cipher.p) == NULL)
+        return enif_raise_exception(env, atom_notsup);
+
+    if ((ctx = CMAC_CTX_new()) == NULL)
+        goto err;
+    if (!CMAC_Init(ctx, key.data, key.size, cipher, NULL))
+        goto err;
+    if (!CMAC_Update(ctx, data.data, data.size))
+        goto err;
+    if ((cipher_len = EVP_CIPHER_block_size(cipher)) < 0)
+        goto err;
+    if ((outp = enif_make_new_binary(env, (size_t)cipher_len, &ret)) == NULL)
+        goto err;
+    if (!CMAC_Final(ctx, outp, &ret_size))
+        goto err;
+
+    ASSERT(ret_size == (unsigned)EVP_CIPHER_block_size(cipher));
+    CONSUME_REDS(env, data);
+    goto done;
+
+ bad_arg:
+    return enif_make_badarg(env);
+
+ err:
+    ret = atom_notsup;
+
+ done:
+    if (ctx)
+        CMAC_CTX_free(ctx);
+    return ret;
+
+#else
+    /* The CMAC functionality was introduced in OpenSSL 1.0.1
+     * Although OTP requires at least version 0.9.8, the versions 0.9.8 and 1.0.0 are
+     * no longer maintained. */
+    return atom_notsup;
+#endif
+}
+
diff --git a/lib/crypto/c_src/cmac.h b/lib/crypto/c_src/cmac.h
new file mode 100644
index 0000000000..14488def58
--- /dev/null
+++ b/lib/crypto/c_src/cmac.h
@@ -0,0 +1,28 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifndef E_CMAC_H__
+#define E_CMAC_H__ 1
+
+#include "common.h"
+
+ERL_NIF_TERM cmac_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+
+#endif /* E_CMAC_H__ */
diff --git a/lib/crypto/c_src/common.h b/lib/crypto/c_src/common.h
new file mode 100644
index 0000000000..a7e59d5d01
--- /dev/null
+++ b/lib/crypto/c_src/common.h
@@ -0,0 +1,52 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifndef E_COMMON_H__
+#define E_COMMON_H__ 1
+
+#ifdef __WIN32__
+#  include <windows.h>
+#endif
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <limits.h>
+#include <stdint.h>
+
+#include <erl_nif.h>
+#include "openssl_config.h"
+#include "atoms.h"
+
+
+/* All nif functions return a valid value or throws an exception */
+#define EXCP(Env, Id, Str)  enif_raise_exception((Env), \
+                                enif_make_tuple3((Env), \
+                                                 (Id),  \
+                                                 enif_make_tuple2((Env), \
+                                                                  enif_make_string((Env),__FILE__,(ERL_NIF_LATIN1)), \
+                                                                  enif_make_int((Env), __LINE__)), \
+                                                 enif_make_string((Env),(Str),(ERL_NIF_LATIN1)) ))
+
+#define EXCP_NOTSUP(Env, Str) EXCP((Env), atom_notsup, (Str))
+#define EXCP_BADARG(Env, Str) EXCP((Env), atom_badarg, (Str))
+#define EXCP_ERROR(Env, Str)  EXCP((Env), atom_error, (Str))
+
+#endif /* E_COMMON_H__ */
diff --git a/lib/crypto/c_src/crypto.c b/lib/crypto/c_src/crypto.c
index df607732bf..a8014745c8 100644
--- a/lib/crypto/c_src/crypto.c
+++ b/lib/crypto/c_src/crypto.c
@@ -23,982 +23,111 @@
  * Based on OpenSSL.
  */
 
-#ifdef __WIN32__
-    #include <windows.h>
-#endif
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-
-#include <erl_nif.h>
-
-#define OPENSSL_THREAD_DEFINES
-#include <openssl/opensslconf.h>
-
-#include <openssl/crypto.h>
-#ifndef OPENSSL_NO_DES
-#include <openssl/des.h>
-#endif /* #ifndef OPENSSL_NO_DES */
-/* #include <openssl/idea.h> This is not supported on the openssl OTP requires */
-#include <openssl/dsa.h>
-#include <openssl/rsa.h>
-#include <openssl/aes.h>
-#include <openssl/md5.h>
-#include <openssl/md4.h>
-#include <openssl/sha.h>
-#include <openssl/ripemd.h>
-#include <openssl/bn.h>
-#include <openssl/objects.h>
-#ifndef OPENSSL_NO_RC4
-    #include <openssl/rc4.h>
-#endif /* OPENSSL_NO_RC4 */
-#ifndef OPENSSL_NO_RC2
-    #include <openssl/rc2.h>
-#endif
-#include <openssl/blowfish.h>
-#include <openssl/rand.h>
-#include <openssl/evp.h>
-#include <openssl/hmac.h>
-#include <openssl/err.h>
-
-/* Helper macro to construct a OPENSSL_VERSION_NUMBER.
- * See openssl/opensslv.h
- */
-#define PACKED_OPENSSL_VERSION(MAJ, MIN, FIX, P)	\
-    ((((((((MAJ << 8) | MIN) << 8 ) | FIX) << 8) | (P-'a'+1)) << 4) | 0xf)
-
-#define PACKED_OPENSSL_VERSION_PLAIN(MAJ, MIN, FIX) \
-    PACKED_OPENSSL_VERSION(MAJ,MIN,FIX,('a'-1))
-
-
-/* LibreSSL was cloned from OpenSSL 1.0.1g and claims to be API and BPI compatible
- * with 1.0.1.
- *
- * LibreSSL has the same names on include files and symbols as OpenSSL, but defines
- * the OPENSSL_VERSION_NUMBER to be >= 2.0.0
- *
- * Therefor works tests like this as intendend:
- *     OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(1,0,0)
- * (The test is for example "2.4.2" >= "1.0.0" although the test
- *  with the cloned OpenSSL test would be "1.0.1" >= "1.0.0")
- *
- * But tests like this gives wrong result:
- *     OPENSSL_VERSION_NUMBER < PACKED_OPENSSL_VERSION_PLAIN(1,1,0)
- * (The test is false since "2.4.2" < "1.1.0".  It should have been
- *  true because the LibreSSL API version is "1.0.1")
- *
- */
-
-#ifdef LIBRESSL_VERSION_NUMBER
-/* A macro to test on in this file */
-#define HAS_LIBRESSL
-#endif
-
-#ifdef HAS_LIBRESSL
-/* LibreSSL dislikes FIPS */
-# ifdef FIPS_SUPPORT
-#  undef FIPS_SUPPORT
-# endif
-
-# if LIBRESSL_VERSION_NUMBER < PACKED_OPENSSL_VERSION_PLAIN(2,7,0)
-/* LibreSSL wants the 1.0.1 API */
-# define NEED_EVP_COMPATIBILITY_FUNCTIONS
-# endif
-#endif
-
-
-#if OPENSSL_VERSION_NUMBER < PACKED_OPENSSL_VERSION_PLAIN(1,1,0)
-# define NEED_EVP_COMPATIBILITY_FUNCTIONS
-#endif
-
-
-#ifndef HAS_LIBRESSL
-# if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(1,0,0)
-#  define HAS_EVP_PKEY_CTX
-# endif
-#endif
-
-
-#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(1,0,0)
-#include <openssl/modes.h>
-#endif
-
-#include "crypto_callback.h"
-
-#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(0,9,8)	\
-    && !defined(OPENSSL_NO_SHA224) && defined(NID_sha224) \
-    && !defined(OPENSSL_NO_SHA256) /* disabled like this in my sha.h (?) */
-# define HAVE_SHA224
-#endif
-#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(0,9,8)	\
-    && !defined(OPENSSL_NO_SHA256) && defined(NID_sha256)
-# define HAVE_SHA256
-#endif
-#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(0,9,8)	\
-    && !defined(OPENSSL_NO_SHA384) && defined(NID_sha384)\
-    && !defined(OPENSSL_NO_SHA512) /* disabled like this in my sha.h (?) */
-# define HAVE_SHA384
-#endif
-#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(0,9,8)	\
-    && !defined(OPENSSL_NO_SHA512) && defined(NID_sha512)
-# define HAVE_SHA512
-#endif
-#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION(0,9,7,'e')
-# define HAVE_DES_ede3_cfb_encrypt
-#endif
-
-// SHA3:
-#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(1,1,1)
-// An error in beta releases of 1.1.1 fixed in production release
-# ifdef NID_sha3_224
-#  define HAVE_SHA3_224
-# endif
-# ifdef NID_sha3_256
-#  define HAVE_SHA3_256
-# endif
-#endif
-# ifdef NID_sha3_384
-#  define HAVE_SHA3_384
-# endif
-# ifdef NID_sha3_512
-#  define HAVE_SHA3_512
-# endif
-
-#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION(0,9,8,'o') \
-	&& !defined(OPENSSL_NO_EC) \
-	&& !defined(OPENSSL_NO_ECDH) \
-	&& !defined(OPENSSL_NO_ECDSA)
-# define HAVE_EC
-#endif
-
-// (test for >= 1.1.1pre8)
-#if OPENSSL_VERSION_NUMBER >= (PACKED_OPENSSL_VERSION_PLAIN(1,1,1) -7) \
-    && !defined(HAS_LIBRESSL) \
-    && defined(HAVE_EC)
-# define HAVE_ED_CURVE_DH
-# if OPENSSL_VERSION_NUMBER >= (PACKED_OPENSSL_VERSION_PLAIN(1,1,1))
-#   define HAVE_EDDSA
-# endif
-#endif
-
-#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION(0,9,8,'c')
-# define HAVE_AES_IGE
-#endif
-
-#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(1,0,1)
-# define HAVE_EVP_AES_CTR
-# define HAVE_AEAD
-# define HAVE_GCM
-# define HAVE_CCM
-# define HAVE_CMAC
-# if defined(RSA_PKCS1_OAEP_PADDING)
-#   define HAVE_RSA_OAEP_PADDING
-# endif
-# define HAVE_RSA_MGF1_MD
-# if OPENSSL_VERSION_NUMBER < PACKED_OPENSSL_VERSION(1,0,1,'d')
-#  define HAVE_GCM_EVP_DECRYPT_BUG
-# endif
-#endif
-
-#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(1,1,0)
-# ifndef HAS_LIBRESSL
-#  define HAVE_CHACHA20
-#  define HAVE_CHACHA20_POLY1305
-#  define HAVE_RSA_OAEP_MD
-# endif
-#endif
-
-// OPENSSL_VERSION_NUMBER >= 1.1.1-pre8
-#if OPENSSL_VERSION_NUMBER >= (PACKED_OPENSSL_VERSION_PLAIN(1,1,1)-7)
-# ifndef HAS_LIBRESSL
-#  define HAVE_POLY1305
-# endif
-#endif
-
-#if OPENSSL_VERSION_NUMBER <= PACKED_OPENSSL_VERSION(0,9,8,'l')
-# define HAVE_ECB_IVEC_BUG
-#endif
-
-#ifndef HAS_LIBRESSL
-# ifdef RSA_SSLV23_PADDING
-#  define HAVE_RSA_SSLV23_PADDING
-# endif
-#endif
-
-#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(1,0,0)
-# ifdef RSA_PKCS1_PSS_PADDING
-#  define HAVE_RSA_PKCS1_PSS_PADDING
-# endif
-#endif
-
-#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION(0,9,8,'h') \
-    && defined(HAVE_EC)
-/* If OPENSSL_NO_EC is set, there will be an error in ec.h included from engine.h
-   So if EC is disabled, you can't use Engine either....
-*/
-# define HAS_ENGINE_SUPPORT
-#endif
-
-
-#if defined(HAS_ENGINE_SUPPORT)
-# include <openssl/engine.h>
-#endif
-
-#if defined(HAVE_CMAC)
-#include <openssl/cmac.h>
-#endif
-
-#if defined(HAVE_EC)
-#include <openssl/ec.h>
-#include <openssl/ecdh.h>
-#include <openssl/ecdsa.h>
-#endif
-
-#ifdef VALGRIND
-    #  include <valgrind/memcheck.h>
-
-/* libcrypto mixes supplied buffer contents into its entropy pool,
-   which makes valgrind complain about the use of uninitialized data.
-   We use this valgrind "request" to make sure that no such seemingly
-   undefined data is returned.
-*/
-    #  define ERL_VALGRIND_MAKE_MEM_DEFINED(ptr,size) \
-    VALGRIND_MAKE_MEM_DEFINED(ptr,size)
-
-    #   define ERL_VALGRIND_ASSERT_MEM_DEFINED(Ptr,Size)			\
-          do {								\
-              int __erl_valgrind_mem_defined = VALGRIND_CHECK_MEM_IS_DEFINED((Ptr),(Size));	\
-              if (__erl_valgrind_mem_defined != 0) {			\
-	          fprintf(stderr,"\r\n####### VALGRIND_ASSSERT(%p,%ld) failed at %s:%d\r\n", \
-		          (Ptr),(long)(Size), __FILE__, __LINE__);	\
-	          abort();						\
-              }								\
-          } while (0)
-
-#else
-    #  define ERL_VALGRIND_MAKE_MEM_DEFINED(ptr,size)
-    #  define ERL_VALGRIND_ASSERT_MEM_DEFINED(ptr,size)
-#endif
-
-#ifdef DEBUG
-    #  define ASSERT(e) \
-    ((void) ((e) ? 1 : (fprintf(stderr,"Assert '%s' failed at %s:%d\n",\
-				#e, __FILE__, __LINE__), abort(), 0)))
-#else
-    #  define ASSERT(e) ((void) 1)
-#endif
-
-#ifdef __GNUC__
-    #  define INLINE __inline__
-#elif defined(__WIN32__)
-    #  define INLINE __forceinline
-#else
-    #  define INLINE
-#endif
-
-
-#define get_int32(s) ((((unsigned char*) (s))[0] << 24) | \
-                      (((unsigned char*) (s))[1] << 16) | \
-                      (((unsigned char*) (s))[2] << 8)  | \
-                      (((unsigned char*) (s))[3]))
-
-#define put_int32(s,i) \
-{ (s)[0] = (char)(((i) >> 24) & 0xff);\
-  (s)[1] = (char)(((i) >> 16) & 0xff);\
-  (s)[2] = (char)(((i) >> 8) & 0xff);\
-  (s)[3] = (char)((i) & 0xff);\
-}
-
-/* This shall correspond to the similar macro in crypto.erl */
-/* Current value is: erlang:system_info(context_reductions) * 10 */
-#define MAX_BYTES_TO_NIF 20000
-
-#define CONSUME_REDS(NifEnv, Ibin)			\
-do {							\
-    int _cost = ((Ibin).size  * 100) / MAX_BYTES_TO_NIF;\
-    if (_cost) {                                        \
-        (void) enif_consume_timeslice((NifEnv),		\
-	          (_cost > 100) ? 100 : _cost);		\
-    }                                                   \
- } while (0)
-
-
-#ifdef NEED_EVP_COMPATIBILITY_FUNCTIONS
-/*
- * In OpenSSL 1.1.0, most structs are opaque. That means that
- * the structs cannot be allocated as automatic variables on the
- * C stack (because the size is unknown) and that it is necessary
- * to use access functions.
- *
- * For backward compatibility to previous versions of OpenSSL, define
- * on our versions of the new functions defined in 1.1.0 here, so that
- * we don't have to sprinkle ifdefs throughout the code.
- */
-
-static HMAC_CTX *HMAC_CTX_new(void);
-static void HMAC_CTX_free(HMAC_CTX *ctx);
-
-static HMAC_CTX *HMAC_CTX_new()
-{
-    HMAC_CTX *ctx = CRYPTO_malloc(sizeof(HMAC_CTX), __FILE__, __LINE__);
-    HMAC_CTX_init(ctx);
-    return ctx;
-}
-
-static void HMAC_CTX_free(HMAC_CTX *ctx)
-{
-    HMAC_CTX_cleanup(ctx);
-    CRYPTO_free(ctx);
-}
-
-#define EVP_MD_CTX_new() EVP_MD_CTX_create()
-#define EVP_MD_CTX_free(ctx) EVP_MD_CTX_destroy(ctx)
-
-static INLINE void *BN_GENCB_get_arg(BN_GENCB *cb);
-
-static INLINE void *BN_GENCB_get_arg(BN_GENCB *cb)
-{
-    return cb->arg;
-}
-
-static INLINE int RSA_set0_key(RSA *r, BIGNUM *n, BIGNUM *e, BIGNUM *d);
-static INLINE void RSA_get0_key(const RSA *r, const BIGNUM **n, const BIGNUM **e, const BIGNUM **d);
-static INLINE int RSA_set0_factors(RSA *r, BIGNUM *p, BIGNUM *q);
-static INLINE void RSA_get0_factors(const RSA *r, const BIGNUM **p, const BIGNUM **q);
-static INLINE int RSA_set0_crt_params(RSA *r, BIGNUM *dmp1, BIGNUM *dmq1, BIGNUM *iqmp);
-static INLINE void RSA_get0_crt_params(const RSA *r, const BIGNUM **dmp1, const BIGNUM **dmq1, const BIGNUM **iqmp);
-
-static INLINE int RSA_set0_key(RSA *r, BIGNUM *n, BIGNUM *e, BIGNUM *d)
-{
-    r->n = n;
-    r->e = e;
-    r->d = d;
-    return 1;
-}
-
-static INLINE void RSA_get0_key(const RSA *r, const BIGNUM **n, const BIGNUM **e, const BIGNUM **d)
-{
-    *n = r->n;
-    *e = r->e;
-    *d = r->d;
-}
-
-static INLINE int RSA_set0_factors(RSA *r, BIGNUM *p, BIGNUM *q)
-{
-    r->p = p;
-    r->q = q;
-    return 1;
-}
-
-static INLINE void RSA_get0_factors(const RSA *r, const BIGNUM **p, const BIGNUM **q)
-{
-    *p = r->p;
-    *q = r->q;
-}
-
-static INLINE int RSA_set0_crt_params(RSA *r, BIGNUM *dmp1, BIGNUM *dmq1, BIGNUM *iqmp)
-{
-    r->dmp1 = dmp1;
-    r->dmq1 = dmq1;
-    r->iqmp = iqmp;
-    return 1;
-}
-
-static INLINE void RSA_get0_crt_params(const RSA *r, const BIGNUM **dmp1, const BIGNUM **dmq1, const BIGNUM **iqmp)
-{
-    *dmp1 = r->dmp1;
-    *dmq1 = r->dmq1;
-    *iqmp = r->iqmp;
-}
-
-static INLINE int DSA_set0_key(DSA *d, BIGNUM *pub_key, BIGNUM *priv_key);
-static INLINE int DSA_set0_pqg(DSA *d, BIGNUM *p, BIGNUM *q, BIGNUM *g);
-static INLINE void DSA_get0_pqg(const DSA *dsa,
-			       const BIGNUM **p, const BIGNUM **q, const BIGNUM **g);
-static INLINE void DSA_get0_key(const DSA *dsa,
-			       const BIGNUM **pub_key, const BIGNUM **priv_key);
-
-static INLINE int DSA_set0_key(DSA *d, BIGNUM *pub_key, BIGNUM *priv_key)
-{
-    d->pub_key = pub_key;
-    d->priv_key = priv_key;
-    return 1;
-}
-
-static INLINE int DSA_set0_pqg(DSA *d, BIGNUM *p, BIGNUM *q, BIGNUM *g)
-{
-    d->p = p;
-    d->q = q;
-    d->g = g;
-    return 1;
-}
-
-static INLINE void
-DSA_get0_pqg(const DSA *dsa, const BIGNUM **p, const BIGNUM **q, const BIGNUM **g)
-{
-    *p = dsa->p;
-    *q = dsa->q;
-    *g = dsa->g;
-}
-
-static INLINE void
-DSA_get0_key(const DSA *dsa, const BIGNUM **pub_key, const BIGNUM **priv_key)
-{
-    if (pub_key) *pub_key = dsa->pub_key;
-    if (priv_key) *priv_key = dsa->priv_key;
-}
-
-
-
-static INLINE int DH_set0_key(DH *dh, BIGNUM *pub_key, BIGNUM *priv_key);
-static INLINE int DH_set0_pqg(DH *dh, BIGNUM *p, BIGNUM *q, BIGNUM *g);
-static INLINE int DH_set_length(DH *dh, long length);
-static INLINE void DH_get0_pqg(const DH *dh,
-			       const BIGNUM **p, const BIGNUM **q, const BIGNUM **g);
-static INLINE void DH_get0_key(const DH *dh,
-			       const BIGNUM **pub_key, const BIGNUM **priv_key);
-
-static INLINE int DH_set0_key(DH *dh, BIGNUM *pub_key, BIGNUM *priv_key)
-{
-    dh->pub_key = pub_key;
-    dh->priv_key = priv_key;
-    return 1;
-}
-
-static INLINE int DH_set0_pqg(DH *dh, BIGNUM *p, BIGNUM *q, BIGNUM *g)
-{
-    dh->p = p;
-    dh->q = q;
-    dh->g = g;
-    return 1;
-}
-
-static INLINE int DH_set_length(DH *dh, long length)
-{
-    dh->length = length;
-    return 1;
-}
-
-
-
-static INLINE void
-DH_get0_pqg(const DH *dh, const BIGNUM **p, const BIGNUM **q, const BIGNUM **g)
-{
-    *p = dh->p;
-    *q = dh->q;
-    *g = dh->g;
-}
-
-static INLINE void
-DH_get0_key(const DH *dh, const BIGNUM **pub_key, const BIGNUM **priv_key)
-{
-    if (pub_key) *pub_key = dh->pub_key;
-    if (priv_key) *priv_key = dh->priv_key;
-}
-
-#else /* End of compatibility definitions. */
-
-#define HAVE_OPAQUE_BN_GENCB
-
-#endif
+#include "common.h"
+
+#include "aead.h"
+#include "aes.h"
+#include "algorithms.h"
+#include "api_ng.h"
+#include "bn.h"
+#include "cipher.h"
+#include "cmac.h"
+#include "dh.h"
+#include "digest.h"
+#include "dss.h"
+#include "ec.h"
+#include "ecdh.h"
+#include "eddsa.h"
+#include "engine.h"
+#include "evp.h"
+#include "fips.h"
+#include "hash.h"
+#include "hmac.h"
+#include "info.h"
+#include "math.h"
+#include "pkey.h"
+#include "poly1305.h"
+#include "rand.h"
+#include "rsa.h"
+#include "srp.h"
 
 /* NIF interface declarations */
 static int load(ErlNifEnv* env, void** priv_data, ERL_NIF_TERM load_info);
 static int upgrade(ErlNifEnv* env, void** priv_data, void** old_priv_data, ERL_NIF_TERM load_info);
 static void unload(ErlNifEnv* env, void* priv_data);
 
-/* The NIFs: */
-static ERL_NIF_TERM info_lib(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM info_fips(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM enable_fips_mode(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM algorithms(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM hash_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM hash_init_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM hash_update_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM hash_final_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM hmac_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM hmac_init_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM hmac_update_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM hmac_final_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM cmac_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM block_crypt_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM aes_cfb_8_crypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM aes_cfb_128_crypt_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM aes_ige_crypt_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM aes_ctr_stream_init(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM aes_ctr_stream_encrypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM strong_rand_bytes_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM strong_rand_range_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM rand_uniform_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM mod_exp_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM do_exor(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM rc4_set_key(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM rc4_encrypt_with_state(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM pkey_sign_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM pkey_verify_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM pkey_crypt_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM rsa_generate_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM dh_generate_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM dh_compute_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM privkey_to_pubkey_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM srp_value_B_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM srp_user_secret_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM srp_host_secret_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-
-static ERL_NIF_TERM ec_key_generate(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM ecdh_compute_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-
-static ERL_NIF_TERM evp_compute_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM evp_generate_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-
-static ERL_NIF_TERM rand_seed_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-
-static ERL_NIF_TERM aead_encrypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM aead_decrypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-#ifdef HAVE_GCM_EVP_DECRYPT_BUG
-static ERL_NIF_TERM aes_gcm_decrypt_NO_EVP(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-#endif
-
-static ERL_NIF_TERM chacha20_stream_init(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM chacha20_stream_crypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-
-static ERL_NIF_TERM poly1305_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-
-static ERL_NIF_TERM engine_by_id_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM engine_init_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM engine_finish_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM engine_free_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM engine_load_dynamic_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM engine_ctrl_cmd_strings_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM engine_register_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM engine_unregister_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM engine_add_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM engine_remove_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM engine_get_first_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM engine_get_next_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM engine_get_id_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM engine_get_name_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM engine_get_all_methods_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-
-/* helpers */
-static void init_algorithms_types(ErlNifEnv*);
-static void init_digest_types(ErlNifEnv* env);
-static void init_cipher_types(ErlNifEnv* env);
-#ifdef HAVE_EC
-static EC_KEY* ec_key_new(ErlNifEnv* env, ERL_NIF_TERM curve_arg);
-static int term2point(ErlNifEnv* env, ERL_NIF_TERM term,
-		      EC_GROUP *group, EC_POINT **pptr);
-#endif
-static ERL_NIF_TERM bin_from_bn(ErlNifEnv* env, const BIGNUM *bn);
-
-#ifdef HAS_ENGINE_SUPPORT
-static int get_engine_load_cmd_list(ErlNifEnv* env, const ERL_NIF_TERM term, char **cmds, int i);
-static int zero_terminate(ErlNifBinary bin, char **buf);
-#endif
-
 static int library_refc = 0; /* number of users of this dynamic library */
 static int library_initialized = 0;
 
 static ErlNifFunc nif_funcs[] = {
-    {"info_lib", 0, info_lib},
-    {"info_fips", 0, info_fips},
-    {"enable_fips_mode", 1, enable_fips_mode},
-    {"algorithms", 0, algorithms},
-    {"hash_nif", 2, hash_nif},
-    {"hash_init_nif", 1, hash_init_nif},
-    {"hash_update_nif", 2, hash_update_nif},
-    {"hash_final_nif", 1, hash_final_nif},
-    {"hmac_nif", 3, hmac_nif},
-    {"hmac_nif", 4, hmac_nif},
-    {"hmac_init_nif", 2, hmac_init_nif},
-    {"hmac_update_nif", 2, hmac_update_nif},
-    {"hmac_final_nif", 1, hmac_final_nif},
-    {"hmac_final_nif", 2, hmac_final_nif},
-    {"cmac_nif", 3, cmac_nif},
-    {"block_crypt_nif", 5, block_crypt_nif},
-    {"block_crypt_nif", 4, block_crypt_nif},
-    {"aes_ige_crypt_nif", 4, aes_ige_crypt_nif},
-    {"aes_ctr_stream_init", 2, aes_ctr_stream_init},
-    {"aes_ctr_stream_encrypt", 2, aes_ctr_stream_encrypt},
-    {"aes_ctr_stream_decrypt", 2, aes_ctr_stream_encrypt},
-    {"strong_rand_bytes_nif", 1, strong_rand_bytes_nif},
-    {"strong_rand_range_nif", 1, strong_rand_range_nif},
-    {"rand_uniform_nif", 2, rand_uniform_nif},
-    {"mod_exp_nif", 4, mod_exp_nif},
-    {"do_exor", 2, do_exor},
-    {"rc4_set_key", 1, rc4_set_key},
-    {"rc4_encrypt_with_state", 2, rc4_encrypt_with_state},
-    {"pkey_sign_nif", 5, pkey_sign_nif},
-    {"pkey_verify_nif", 6, pkey_verify_nif},
-    {"pkey_crypt_nif", 6, pkey_crypt_nif},
-    {"rsa_generate_key_nif", 2, rsa_generate_key_nif},
-    {"dh_generate_key_nif", 4, dh_generate_key_nif},
-    {"dh_compute_key_nif", 3, dh_compute_key_nif},
-    {"evp_compute_key_nif", 3, evp_compute_key_nif},
-    {"evp_generate_key_nif", 1, evp_generate_key_nif},
-    {"privkey_to_pubkey_nif", 2, privkey_to_pubkey_nif},
-    {"srp_value_B_nif", 5, srp_value_B_nif},
-    {"srp_user_secret_nif", 7, srp_user_secret_nif},
-    {"srp_host_secret_nif", 5, srp_host_secret_nif},
-
-    {"ec_key_generate", 2, ec_key_generate},
-    {"ecdh_compute_key_nif", 3, ecdh_compute_key_nif},
-
-    {"rand_seed_nif", 1, rand_seed_nif},
-
-    {"aead_encrypt", 6, aead_encrypt},
-    {"aead_decrypt", 6, aead_decrypt},
-
-    {"chacha20_stream_init",    2, chacha20_stream_init},
-    {"chacha20_stream_encrypt", 2, chacha20_stream_crypt},
-    {"chacha20_stream_decrypt", 2, chacha20_stream_crypt},
-
-    {"poly1305_nif", 2, poly1305_nif},
-
-    {"engine_by_id_nif", 1, engine_by_id_nif},
-    {"engine_init_nif", 1, engine_init_nif},
-    {"engine_finish_nif", 1, engine_finish_nif},
-    {"engine_free_nif", 1, engine_free_nif},
-    {"engine_load_dynamic_nif", 0, engine_load_dynamic_nif},
-    {"engine_ctrl_cmd_strings_nif", 3, engine_ctrl_cmd_strings_nif},
-    {"engine_register_nif", 2, engine_register_nif},
-    {"engine_unregister_nif", 2, engine_unregister_nif},
-    {"engine_add_nif", 1, engine_add_nif},
-    {"engine_remove_nif", 1, engine_remove_nif},
-    {"engine_get_first_nif", 0, engine_get_first_nif},
-    {"engine_get_next_nif", 1, engine_get_next_nif},
-    {"engine_get_id_nif", 1, engine_get_id_nif},
-    {"engine_get_name_nif", 1, engine_get_name_nif},
-    {"engine_get_all_methods_nif", 0, engine_get_all_methods_nif}
-
+    {"info_lib", 0, info_lib, 0},
+    {"info_fips", 0, info_fips, 0},
+    {"enable_fips_mode", 1, enable_fips_mode, 0},
+    {"algorithms", 0, algorithms, 0},
+    {"hash_info", 1, hash_info_nif, 0},
+    {"hash_nif", 2, hash_nif, 0},
+    {"hash_init_nif", 1, hash_init_nif, 0},
+    {"hash_update_nif", 2, hash_update_nif, 0},
+    {"hash_final_nif", 1, hash_final_nif, 0},
+    {"hmac_nif", 3, hmac_nif, 0},
+    {"hmac_nif", 4, hmac_nif, 0},
+    {"hmac_init_nif", 2, hmac_init_nif, 0},
+    {"hmac_update_nif", 2, hmac_update_nif, 0},
+    {"hmac_final_nif", 1, hmac_final_nif, 0},
+    {"hmac_final_nif", 2, hmac_final_nif, 0},
+    {"cmac_nif", 3, cmac_nif, 0},
+    {"cipher_info_nif", 1, cipher_info_nif, 0},
+    {"aes_ige_crypt_nif", 4, aes_ige_crypt_nif, 0},
+    {"ng_crypto_init_nif", 4, ng_crypto_init_nif, 0},
+    {"ng_crypto_update_nif", 2, ng_crypto_update_nif, 0},
+    {"ng_crypto_update_nif", 3, ng_crypto_update_nif, 0},
+    {"ng_crypto_one_time_nif", 5, ng_crypto_one_time_nif, 0},
+    {"strong_rand_bytes_nif", 1, strong_rand_bytes_nif, 0},
+    {"strong_rand_range_nif", 1, strong_rand_range_nif, 0},
+    {"rand_uniform_nif", 2, rand_uniform_nif, 0},
+    {"mod_exp_nif", 4, mod_exp_nif, 0},
+    {"do_exor", 2, do_exor, 0},
+    {"pkey_sign_nif", 5, pkey_sign_nif, 0},
+    {"pkey_verify_nif", 6, pkey_verify_nif, 0},
+    {"pkey_crypt_nif", 6, pkey_crypt_nif, 0},
+    {"rsa_generate_key_nif", 2, rsa_generate_key_nif, 0},
+    {"dh_generate_key_nif", 4, dh_generate_key_nif, 0},
+    {"dh_compute_key_nif", 3, dh_compute_key_nif, 0},
+    {"evp_compute_key_nif", 3, evp_compute_key_nif, 0},
+    {"evp_generate_key_nif", 1, evp_generate_key_nif, 0},
+    {"privkey_to_pubkey_nif", 2, privkey_to_pubkey_nif, 0},
+    {"srp_value_B_nif", 5, srp_value_B_nif, 0},
+    {"srp_user_secret_nif", 7, srp_user_secret_nif, 0},
+    {"srp_host_secret_nif", 5, srp_host_secret_nif, 0},
+
+    {"ec_key_generate", 2, ec_key_generate, 0},
+    {"ecdh_compute_key_nif", 3, ecdh_compute_key_nif, 0},
+
+    {"rand_seed_nif", 1, rand_seed_nif, 0},
+
+    {"aead_cipher", 7, aead_cipher, 0},
+
+    {"poly1305_nif", 2, poly1305_nif, 0},
+
+    {"engine_by_id_nif", 1, engine_by_id_nif, 0},
+    {"engine_init_nif", 1, engine_init_nif, 0},
+    {"engine_finish_nif", 1, engine_finish_nif, 0},
+    {"engine_free_nif", 1, engine_free_nif, 0},
+    {"engine_load_dynamic_nif", 0, engine_load_dynamic_nif, 0},
+    {"engine_ctrl_cmd_strings_nif", 3, engine_ctrl_cmd_strings_nif, 0},
+    {"engine_register_nif", 2, engine_register_nif, 0},
+    {"engine_unregister_nif", 2, engine_unregister_nif, 0},
+    {"engine_add_nif", 1, engine_add_nif, 0},
+    {"engine_remove_nif", 1, engine_remove_nif, 0},
+    {"engine_get_first_nif", 0, engine_get_first_nif, 0},
+    {"engine_get_next_nif", 1, engine_get_next_nif, 0},
+    {"engine_get_id_nif", 1, engine_get_id_nif, 0},
+    {"engine_get_name_nif", 1, engine_get_name_nif, 0},
+    {"engine_get_all_methods_nif", 0, engine_get_all_methods_nif, 0}
 };
 
 ERL_NIF_INIT(crypto,nif_funcs,load,NULL,upgrade,unload)
 
-#define MD5_CTX_LEN       (sizeof(MD5_CTX))
-#define MD4_CTX_LEN       (sizeof(MD4_CTX))
-#define RIPEMD160_CTX_LEN (sizeof(RIPEMD160_CTX))
-
-
-static ERL_NIF_TERM atom_true;
-static ERL_NIF_TERM atom_false;
-static ERL_NIF_TERM atom_sha;
-static ERL_NIF_TERM atom_error;
-static ERL_NIF_TERM atom_rsa_pkcs1_padding;
-static ERL_NIF_TERM atom_rsa_pkcs1_oaep_padding;
-static ERL_NIF_TERM atom_rsa_no_padding;
-static ERL_NIF_TERM atom_signature_md;
-static ERL_NIF_TERM atom_undefined;
-
-static ERL_NIF_TERM atom_ok;
-static ERL_NIF_TERM atom_not_prime;
-static ERL_NIF_TERM atom_not_strong_prime;
-static ERL_NIF_TERM atom_unable_to_check_generator;
-static ERL_NIF_TERM atom_not_suitable_generator;
-static ERL_NIF_TERM atom_check_failed;
-static ERL_NIF_TERM atom_unknown;
-static ERL_NIF_TERM atom_none;
-static ERL_NIF_TERM atom_notsup;
-static ERL_NIF_TERM atom_digest;
-#ifdef FIPS_SUPPORT
-static ERL_NIF_TERM atom_enabled;
-static ERL_NIF_TERM atom_not_enabled;
-#else
-static ERL_NIF_TERM atom_not_supported;
-#endif
-
-#if defined(HAVE_EC)
-static ERL_NIF_TERM atom_ec;
-static ERL_NIF_TERM atom_prime_field;
-static ERL_NIF_TERM atom_characteristic_two_field;
-static ERL_NIF_TERM atom_tpbasis;
-static ERL_NIF_TERM atom_ppbasis;
-static ERL_NIF_TERM atom_onbasis;
-#endif
-
-static ERL_NIF_TERM atom_aes_cfb8;
-static ERL_NIF_TERM atom_aes_cfb128;
-#ifdef HAVE_GCM
-static ERL_NIF_TERM atom_aes_gcm;
-#endif
-#ifdef HAVE_CCM
-static ERL_NIF_TERM atom_aes_ccm;
-#endif
-#ifdef HAVE_CHACHA20_POLY1305
-static ERL_NIF_TERM atom_chacha20_poly1305;
-#endif
-#ifdef HAVE_ECB_IVEC_BUG
-static ERL_NIF_TERM atom_aes_ecb;
-static ERL_NIF_TERM atom_des_ecb;
-static ERL_NIF_TERM atom_blowfish_ecb;
-#endif
-
-static ERL_NIF_TERM atom_rsa;
-static ERL_NIF_TERM atom_dss;
-static ERL_NIF_TERM atom_ecdsa;
-
-#ifdef HAVE_ED_CURVE_DH
-static ERL_NIF_TERM atom_x25519;
-static ERL_NIF_TERM atom_x448;
-#endif
-
-static ERL_NIF_TERM atom_eddsa;
-#ifdef HAVE_EDDSA
-static ERL_NIF_TERM atom_ed25519;
-static ERL_NIF_TERM atom_ed448;
-#endif
-
-static ERL_NIF_TERM atom_rsa_mgf1_md;
-static ERL_NIF_TERM atom_rsa_oaep_label;
-static ERL_NIF_TERM atom_rsa_oaep_md;
-static ERL_NIF_TERM atom_rsa_pad; /* backwards compatibility */
-static ERL_NIF_TERM atom_rsa_padding;
-static ERL_NIF_TERM atom_rsa_pkcs1_pss_padding;
-#ifdef HAVE_RSA_SSLV23_PADDING
-static ERL_NIF_TERM atom_rsa_sslv23_padding;
-#endif
-static ERL_NIF_TERM atom_rsa_x931_padding;
-static ERL_NIF_TERM atom_rsa_pss_saltlen;
-static ERL_NIF_TERM atom_sha224;
-static ERL_NIF_TERM atom_sha256;
-static ERL_NIF_TERM atom_sha384;
-static ERL_NIF_TERM atom_sha512;
-static ERL_NIF_TERM atom_sha3_224;
-static ERL_NIF_TERM atom_sha3_256;
-static ERL_NIF_TERM atom_sha3_384;
-static ERL_NIF_TERM atom_sha3_512;
-static ERL_NIF_TERM atom_md5;
-static ERL_NIF_TERM atom_ripemd160;
-
-#ifdef HAS_ENGINE_SUPPORT
-static ERL_NIF_TERM atom_bad_engine_method;
-static ERL_NIF_TERM atom_bad_engine_id;
-static ERL_NIF_TERM atom_ctrl_cmd_failed;
-static ERL_NIF_TERM atom_engine_init_failed;
-static ERL_NIF_TERM atom_register_engine_failed;
-static ERL_NIF_TERM atom_add_engine_failed;
-static ERL_NIF_TERM atom_remove_engine_failed;
-static ERL_NIF_TERM atom_engine_method_not_supported;
-
-static ERL_NIF_TERM atom_engine_method_rsa;
-static ERL_NIF_TERM atom_engine_method_dsa;
-static ERL_NIF_TERM atom_engine_method_dh;
-static ERL_NIF_TERM atom_engine_method_rand;
-static ERL_NIF_TERM atom_engine_method_ecdh;
-static ERL_NIF_TERM atom_engine_method_ecdsa;
-static ERL_NIF_TERM atom_engine_method_ciphers;
-static ERL_NIF_TERM atom_engine_method_digests;
-static ERL_NIF_TERM atom_engine_method_store;
-static ERL_NIF_TERM atom_engine_method_pkey_meths;
-static ERL_NIF_TERM atom_engine_method_pkey_asn1_meths;
-static ERL_NIF_TERM atom_engine_method_ec;
-
-static ERL_NIF_TERM atom_engine;
-static ERL_NIF_TERM atom_key_id;
-static ERL_NIF_TERM atom_password;
-#endif
-
-static ErlNifResourceType* hmac_context_rtype;
-struct hmac_context
-{
-    ErlNifMutex* mtx;
-    int alive;
-    HMAC_CTX* ctx;
-};
-static void hmac_context_dtor(ErlNifEnv* env, struct hmac_context*);
-
-struct digest_type_t {
-    union {
-	const char*  str;        /* before init, NULL for end-of-table */
-	ERL_NIF_TERM atom;       /* after init, 'false' for end-of-table */
-    }type;
-    union {
-	const EVP_MD* (*funcp)(void);  /* before init, NULL if notsup */
-	const EVP_MD* p;               /* after init, NULL if notsup */
-    }md;
-};
-
-static struct digest_type_t digest_types[] =
-{
-    {{"md4"}, {&EVP_md4}},
-    {{"md5"}, {&EVP_md5}},
-    {{"ripemd160"}, {&EVP_ripemd160}},
-    {{"sha"}, {&EVP_sha1}},
-    {{"sha224"},
-#ifdef HAVE_SHA224
-     {&EVP_sha224}
-#else
-     {NULL}
-#endif
-    },
-    {{"sha256"},
-#ifdef HAVE_SHA256
-     {&EVP_sha256}
-#else
-     {NULL}
-#endif
-    },
-    {{"sha384"},
-#ifdef HAVE_SHA384
-     {&EVP_sha384}
-#else
-     {NULL}
-#endif
-    },
-    {{"sha512"},
-#ifdef HAVE_SHA512
-     {&EVP_sha512}
-#else
-     {NULL}
-#endif
-    },
-    {{"sha3_224"},
-#ifdef HAVE_SHA3_224
-     {&EVP_sha3_224}
-#else
-     {NULL}
-#endif
-    },
-    {{"sha3_256"},
-#ifdef HAVE_SHA3_256
-     {&EVP_sha3_256}
-#else
-     {NULL}
-#endif
-    },
-    {{"sha3_384"},
-#ifdef HAVE_SHA3_384
-     {&EVP_sha3_384}
-#else
-     {NULL}
-#endif
-    },
-    {{"sha3_512"},
-#ifdef HAVE_SHA3_512
-     {&EVP_sha3_512}
-#else
-     {NULL}
-#endif
-    },
-
-    {{NULL}}
-};
-
-static struct digest_type_t* get_digest_type(ERL_NIF_TERM type);
-
-struct cipher_type_t {
-    union {
-	const char* str;    /* before init */
-	ERL_NIF_TERM atom;  /* after init */
-    }type;
-    union {
-	const EVP_CIPHER* (*funcp)(void); /* before init, NULL if notsup */
-	const EVP_CIPHER* p;              /* after init, NULL if notsup */
-    }cipher;
-    const size_t key_len;      /* != 0 to also match on key_len */
-};
-
-#ifdef OPENSSL_NO_DES
-#define COND_NO_DES_PTR(Ptr) (NULL)
-#else
-#define COND_NO_DES_PTR(Ptr) (Ptr)
-#endif
-
-static struct cipher_type_t cipher_types[] =
-{
-    {{"rc2_cbc"},
-#ifndef OPENSSL_NO_RC2
-     {&EVP_rc2_cbc}
-#else
-     {NULL}
-#endif
-    },
-    {{"des_cbc"}, {COND_NO_DES_PTR(&EVP_des_cbc)}},
-    {{"des_cfb"}, {COND_NO_DES_PTR(&EVP_des_cfb8)}},
-    {{"des_ecb"}, {COND_NO_DES_PTR(&EVP_des_ecb)}},
-    {{"des_ede3_cbc"}, {COND_NO_DES_PTR(&EVP_des_ede3_cbc)}},
-    {{"des_ede3_cbf"}, /* Misspelled, retained */
-#ifdef HAVE_DES_ede3_cfb_encrypt
-     {COND_NO_DES_PTR(&EVP_des_ede3_cfb8)}
-#else
-     {NULL}
-#endif
-    },
-    {{"des_ede3_cfb"},
-#ifdef HAVE_DES_ede3_cfb_encrypt
-     {COND_NO_DES_PTR(&EVP_des_ede3_cfb8)}
-#else
-     {NULL}
-#endif
-    },
-    {{"blowfish_cbc"}, {&EVP_bf_cbc}},
-    {{"blowfish_cfb64"}, {&EVP_bf_cfb64}},
-    {{"blowfish_ofb64"}, {&EVP_bf_ofb}},
-    {{"blowfish_ecb"}, {&EVP_bf_ecb}},
-    {{"aes_cbc"}, {&EVP_aes_128_cbc}, 16},
-    {{"aes_cbc"}, {&EVP_aes_192_cbc}, 24},
-    {{"aes_cbc"}, {&EVP_aes_256_cbc}, 32},
-    {{"aes_cbc128"}, {&EVP_aes_128_cbc}},
-    {{"aes_cbc256"}, {&EVP_aes_256_cbc}},
-    {{"aes_cfb8"}, {&EVP_aes_128_cfb8}},
-    {{"aes_cfb128"}, {&EVP_aes_128_cfb128}},
-    {{"aes_ecb"}, {&EVP_aes_128_ecb}, 16},
-    {{"aes_ecb"}, {&EVP_aes_192_ecb}, 24},
-    {{"aes_ecb"}, {&EVP_aes_256_ecb}, 32},
-    {{NULL}}
-};
-
-static struct cipher_type_t* get_cipher_type(ERL_NIF_TERM type, size_t key_len);
-
-
-/*
-#define PRINTF_ERR0(FMT) enif_fprintf(stderr, FMT "\n")
-#define PRINTF_ERR1(FMT, A1) enif_fprintf(stderr, FMT "\n", A1)
-#define PRINTF_ERR2(FMT, A1, A2) enif_fprintf(stderr, FMT "\n", A1, A2)
-*/
-
-#define PRINTF_ERR0(FMT)
-#define PRINTF_ERR1(FMT,A1)
-#define PRINTF_ERR2(FMT,A1,A2)
-
-#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(1,0,0)
-/* Define resource types for OpenSSL context structures. */
-static ErlNifResourceType* evp_md_ctx_rtype;
-struct evp_md_ctx {
-    EVP_MD_CTX* ctx;
-};
-static void evp_md_ctx_dtor(ErlNifEnv* env, struct evp_md_ctx *ctx) {
-    EVP_MD_CTX_free(ctx->ctx);
-}
-#endif
-
-#ifdef HAVE_EVP_AES_CTR
-static ErlNifResourceType* evp_cipher_ctx_rtype;
-struct evp_cipher_ctx {
-    EVP_CIPHER_CTX* ctx;
-};
-static void evp_cipher_ctx_dtor(ErlNifEnv* env, struct evp_cipher_ctx* ctx) {
-    EVP_CIPHER_CTX_free(ctx->ctx);
-}
-#endif
-
-// Engine
-#ifdef HAS_ENGINE_SUPPORT
-static ErlNifResourceType* engine_ctx_rtype;
-struct engine_ctx {
-    ENGINE *engine;
-    char *id;
-};
-static void engine_ctx_dtor(ErlNifEnv* env, struct engine_ctx* ctx) {
-    PRINTF_ERR0("engine_ctx_dtor");
-    if(ctx->id) {
-        PRINTF_ERR1("  non empty ctx->id=%s", ctx->id);
-        enif_free(ctx->id);
-    } else
-         PRINTF_ERR0("  empty ctx->id=NULL");
-}
-#endif
 
 static int verify_lib_version(void)
 {
@@ -1015,46 +144,6 @@ static int verify_lib_version(void)
     return 1;
 }
 
-#ifdef FIPS_SUPPORT
-/* In FIPS mode non-FIPS algorithms are disabled and return badarg. */
-#define CHECK_NO_FIPS_MODE() { if (FIPS_mode()) return atom_notsup; }
-#else
-#define CHECK_NO_FIPS_MODE()
-#endif
-
-#ifdef HAVE_DYNAMIC_CRYPTO_LIB
-
-# if defined(DEBUG)
-static char crypto_callback_name[] = "crypto_callback.debug";
-# elif defined(VALGRIND)
-static char crypto_callback_name[] = "crypto_callback.valgrind";
-# else
-static char crypto_callback_name[] = "crypto_callback";
-# endif
-
-static int change_basename(ErlNifBinary* bin, char* buf, int bufsz, const char* newfile)
-{
-    int i;
-
-    for (i = bin->size; i > 0; i--) {
-	if (bin->data[i-1] == '/')
-	    break;
-    }
-    if (i + strlen(newfile) >= bufsz) {
-	PRINTF_ERR0("CRYPTO: lib name too long");
-	return 0;
-    }
-    memcpy(buf, bin->data, i);
-    strcpy(buf+i, newfile);
-    return 1;
-}
-
-static void error_handler(void* null, const char* errstr)
-{
-    PRINTF_ERR1("CRYPTO LOADING ERROR: '%s'", errstr);
-}
-#endif /* HAVE_DYNAMIC_CRYPTO_LIB */
-
 static int initialize(ErlNifEnv* env, ERL_NIF_TERM load_info)
 {
 #ifdef OPENSSL_THREADS
@@ -1068,59 +157,37 @@ static int initialize(ErlNifEnv* env, ERL_NIF_TERM load_info)
     int vernum;
     ErlNifBinary lib_bin;
     char lib_buf[1000];
+#ifdef HAVE_DYNAMIC_CRYPTO_LIB
+    void *handle;
+#endif
 
     if (!verify_lib_version())
 	return __LINE__;
 
     /* load_info: {302, <<"/full/path/of/this/library">>,true|false} */
-    if (!enif_get_tuple(env, load_info, &tpl_arity, &tpl_array)
-	|| tpl_arity != 3
-	|| !enif_get_int(env, tpl_array[0], &vernum)
-	|| vernum != 302
-	|| !enif_inspect_binary(env, tpl_array[1], &lib_bin)) {
-
-	PRINTF_ERR1("CRYPTO: Invalid load_info '%T'", load_info);
-	return __LINE__;
-    }
+    if (!enif_get_tuple(env, load_info, &tpl_arity, &tpl_array))
+        return __LINE__;
+    if (tpl_arity != 3)
+        return __LINE__;
+    if (!enif_get_int(env, tpl_array[0], &vernum))
+        return __LINE__;
+    if (vernum != 302)
+        return __LINE__;
+    if (!enif_inspect_binary(env, tpl_array[1], &lib_bin))
+        return __LINE__;
 
-    hmac_context_rtype = enif_open_resource_type(env, NULL, "hmac_context",
-						 (ErlNifResourceDtor*) hmac_context_dtor,
-						 ERL_NIF_RT_CREATE|ERL_NIF_RT_TAKEOVER,
-						 NULL);
-    if (!hmac_context_rtype) {
-	PRINTF_ERR0("CRYPTO: Could not open resource type 'hmac_context'");
+    if (!init_hmac_ctx(env)) {
 	return __LINE__;
     }
-#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(1,0,0)
-    evp_md_ctx_rtype = enif_open_resource_type(env, NULL, "EVP_MD_CTX",
-                                               (ErlNifResourceDtor*) evp_md_ctx_dtor,
-                                               ERL_NIF_RT_CREATE|ERL_NIF_RT_TAKEOVER,
-                                               NULL);
-    if (!evp_md_ctx_rtype) {
-        PRINTF_ERR0("CRYPTO: Could not open resource type 'EVP_MD_CTX'");
+    if (!init_hash_ctx(env)) {
         return __LINE__;
     }
-#endif
-#ifdef HAVE_EVP_AES_CTR
-    evp_cipher_ctx_rtype = enif_open_resource_type(env, NULL, "EVP_CIPHER_CTX",
-                                                   (ErlNifResourceDtor*) evp_cipher_ctx_dtor,
-                                                   ERL_NIF_RT_CREATE|ERL_NIF_RT_TAKEOVER,
-                                                   NULL);
-    if (!evp_cipher_ctx_rtype) {
-        PRINTF_ERR0("CRYPTO: Could not open resource type 'EVP_CIPHER_CTX'");
+    if (!init_cipher_ctx(env)) {
         return __LINE__;
     }
-#endif
-#ifdef HAS_ENGINE_SUPPORT
-    engine_ctx_rtype = enif_open_resource_type(env, NULL, "ENGINE_CTX",
-                                                   (ErlNifResourceDtor*) engine_ctx_dtor,
-                                                   ERL_NIF_RT_CREATE|ERL_NIF_RT_TAKEOVER,
-                                                   NULL);
-    if (!engine_ctx_rtype) {
-        PRINTF_ERR0("CRYPTO: Could not open resource type 'ENGINE_CTX'");
+    if (!init_engine_ctx(env)) {
         return __LINE__;
     }
-#endif
 
     if (library_initialized) {
 	/* Repeated loading of this library (module upgrade).
@@ -1129,149 +196,18 @@ static int initialize(ErlNifEnv* env, ERL_NIF_TERM load_info)
 	return 0;
     }
 
-    atom_true  = enif_make_atom(env,"true");
-    atom_false = enif_make_atom(env,"false");
-    /* Enter FIPS mode */
-    if (tpl_array[2] == atom_true) {
-#ifdef FIPS_SUPPORT
-        if (!FIPS_mode_set(1)) {
-#else
-        {
-#endif
-            PRINTF_ERR0("CRYPTO: Could not setup FIPS mode");
-            return 0;
-        }
-    } else if (tpl_array[2] != atom_false) {
-        PRINTF_ERR1("CRYPTO: Invalid load_info '%T'", load_info);
-        return 0;
+    if (!init_atoms(env, tpl_array[2], load_info)) {
+        return __LINE__;
     }
 
-    atom_sha = enif_make_atom(env,"sha");
-    atom_error = enif_make_atom(env,"error");
-    atom_rsa_pkcs1_padding = enif_make_atom(env,"rsa_pkcs1_padding");
-    atom_rsa_pkcs1_oaep_padding = enif_make_atom(env,"rsa_pkcs1_oaep_padding");
-    atom_rsa_no_padding = enif_make_atom(env,"rsa_no_padding");
-    atom_signature_md = enif_make_atom(env,"signature_md");
-    atom_undefined = enif_make_atom(env,"undefined");
-    atom_ok = enif_make_atom(env,"ok");
-    atom_not_prime = enif_make_atom(env,"not_prime");
-    atom_not_strong_prime = enif_make_atom(env,"not_strong_prime");
-    atom_unable_to_check_generator = enif_make_atom(env,"unable_to_check_generator");
-    atom_not_suitable_generator = enif_make_atom(env,"not_suitable_generator");
-    atom_check_failed = enif_make_atom(env,"check_failed");
-    atom_unknown = enif_make_atom(env,"unknown");
-    atom_none = enif_make_atom(env,"none");
-    atom_notsup = enif_make_atom(env,"notsup");
-    atom_digest = enif_make_atom(env,"digest");
-
-#if defined(HAVE_EC)
-    atom_ec = enif_make_atom(env,"ec");
-    atom_prime_field = enif_make_atom(env,"prime_field");
-    atom_characteristic_two_field = enif_make_atom(env,"characteristic_two_field");
-    atom_tpbasis = enif_make_atom(env,"tpbasis");
-    atom_ppbasis = enif_make_atom(env,"ppbasis");
-    atom_onbasis = enif_make_atom(env,"onbasis");
-#endif
-
-    atom_aes_cfb8 = enif_make_atom(env, "aes_cfb8");
-    atom_aes_cfb128 = enif_make_atom(env, "aes_cfb128");
-#ifdef HAVE_GCM
-    atom_aes_gcm = enif_make_atom(env, "aes_gcm");
-#endif
-#ifdef HAVE_CCM
-    atom_aes_ccm = enif_make_atom(env, "aes_ccm");
-#endif
-#ifdef HAVE_CHACHA20_POLY1305
-    atom_chacha20_poly1305 = enif_make_atom(env,"chacha20_poly1305");
-#endif
-#ifdef HAVE_ECB_IVEC_BUG
-    atom_aes_ecb = enif_make_atom(env, "aes_ecb");
-    atom_des_ecb = enif_make_atom(env, "des_ecb");
-    atom_blowfish_ecb = enif_make_atom(env, "blowfish_ecb");
-#endif
-
-#ifdef FIPS_SUPPORT
-    atom_enabled = enif_make_atom(env,"enabled");
-    atom_not_enabled = enif_make_atom(env,"not_enabled");
-#else
-    atom_not_supported = enif_make_atom(env,"not_supported");
-#endif
-    atom_rsa = enif_make_atom(env,"rsa");
-    atom_dss = enif_make_atom(env,"dss");
-    atom_ecdsa = enif_make_atom(env,"ecdsa");
-#ifdef HAVE_ED_CURVE_DH
-    atom_x25519 = enif_make_atom(env,"x25519");
-    atom_x448 = enif_make_atom(env,"x448");
-#endif
-    atom_eddsa = enif_make_atom(env,"eddsa");
-#ifdef HAVE_EDDSA
-    atom_ed25519 = enif_make_atom(env,"ed25519");
-    atom_ed448 = enif_make_atom(env,"ed448");
-#endif
-    atom_rsa_mgf1_md = enif_make_atom(env,"rsa_mgf1_md");
-    atom_rsa_oaep_label = enif_make_atom(env,"rsa_oaep_label");
-    atom_rsa_oaep_md = enif_make_atom(env,"rsa_oaep_md");
-    atom_rsa_pad = enif_make_atom(env,"rsa_pad"); /* backwards compatibility */
-    atom_rsa_padding = enif_make_atom(env,"rsa_padding");
-    atom_rsa_pkcs1_pss_padding = enif_make_atom(env,"rsa_pkcs1_pss_padding");
-#ifdef HAVE_RSA_SSLV23_PADDING
-    atom_rsa_sslv23_padding = enif_make_atom(env,"rsa_sslv23_padding");
-#endif
-    atom_rsa_x931_padding = enif_make_atom(env,"rsa_x931_padding");
-    atom_rsa_pss_saltlen = enif_make_atom(env,"rsa_pss_saltlen");
-    atom_sha224 = enif_make_atom(env,"sha224");
-    atom_sha256 = enif_make_atom(env,"sha256");
-    atom_sha384 = enif_make_atom(env,"sha384");
-    atom_sha512 = enif_make_atom(env,"sha512");
-    atom_sha3_224 = enif_make_atom(env,"sha3_224");
-    atom_sha3_256 = enif_make_atom(env,"sha3_256");
-    atom_sha3_384 = enif_make_atom(env,"sha3_384");
-    atom_sha3_512 = enif_make_atom(env,"sha3_512");
-    atom_md5 = enif_make_atom(env,"md5");
-    atom_ripemd160 = enif_make_atom(env,"ripemd160");
-
-#ifdef HAS_ENGINE_SUPPORT
-    atom_bad_engine_method = enif_make_atom(env,"bad_engine_method");
-    atom_bad_engine_id = enif_make_atom(env,"bad_engine_id");
-    atom_ctrl_cmd_failed = enif_make_atom(env,"ctrl_cmd_failed");
-    atom_engine_init_failed = enif_make_atom(env,"engine_init_failed");
-    atom_engine_method_not_supported = enif_make_atom(env,"engine_method_not_supported");
-    atom_add_engine_failed = enif_make_atom(env,"add_engine_failed");
-    atom_remove_engine_failed = enif_make_atom(env,"remove_engine_failed");
-
-    atom_engine_method_rsa = enif_make_atom(env,"engine_method_rsa");
-    atom_engine_method_dsa = enif_make_atom(env,"engine_method_dsa");
-    atom_engine_method_dh = enif_make_atom(env,"engine_method_dh");
-    atom_engine_method_rand = enif_make_atom(env,"engine_method_rand");
-    atom_engine_method_ecdh = enif_make_atom(env,"engine_method_ecdh");
-    atom_engine_method_ecdsa = enif_make_atom(env,"engine_method_ecdsa");
-    atom_engine_method_store = enif_make_atom(env,"engine_method_store");
-    atom_engine_method_ciphers = enif_make_atom(env,"engine_method_ciphers");
-    atom_engine_method_digests = enif_make_atom(env,"engine_method_digests");
-    atom_engine_method_pkey_meths = enif_make_atom(env,"engine_method_pkey_meths");
-    atom_engine_method_pkey_asn1_meths = enif_make_atom(env,"engine_method_pkey_asn1_meths");
-    atom_engine_method_ec = enif_make_atom(env,"engine_method_ec");
-
-    atom_engine = enif_make_atom(env,"engine");
-    atom_key_id = enif_make_atom(env,"key_id");
-    atom_password = enif_make_atom(env,"password");
-#endif
-
-
 #ifdef HAVE_DYNAMIC_CRYPTO_LIB
-    {
-	void* handle;
-	if (!change_basename(&lib_bin, lib_buf, sizeof(lib_buf), crypto_callback_name)) {
-	    return __LINE__;
-	}
-	if (!(handle = enif_dlopen(lib_buf, &error_handler, NULL))) {
-	    return __LINE__;
-	}
-	if (!(funcp = (get_crypto_callbacks_t*) enif_dlsym(handle, "get_crypto_callbacks",
-							   &error_handler, NULL))) {
-	    return __LINE__;
-	}
-    }
+    if (!change_basename(&lib_bin, lib_buf, sizeof(lib_buf), crypto_callback_name))
+        return __LINE__;
+    if ((handle = enif_dlopen(lib_buf, &error_handler, NULL)) == NULL)
+        return __LINE__;
+    if ((funcp = (get_crypto_callbacks_t*) enif_dlsym(handle, "get_crypto_callbacks",
+                                                       &error_handler, NULL)) == NULL)
+        return __LINE__;
 #else /* !HAVE_DYNAMIC_CRYPTO_LIB */
     funcp = &get_crypto_callbacks;
 #endif
@@ -1291,7 +227,10 @@ static int initialize(ErlNifEnv* env, ERL_NIF_TERM load_info)
 	return __LINE__;
     }
 
-    CRYPTO_set_mem_functions(ccb->crypto_alloc, ccb->crypto_realloc, ccb->crypto_free);
+#ifdef HAS_CRYPTO_MEM_FUNCTIONS
+    if (!CRYPTO_set_mem_functions(ccb->crypto_alloc, ccb->crypto_realloc, ccb->crypto_free))
+        return __LINE__;
+#endif
 
 #ifdef OPENSSL_THREADS
     if (nlocks > 0) {
@@ -1345,4806 +284,3 @@ static void unload(ErlNifEnv* env, void* priv_data)
 {
     --library_refc;
 }
-
-static int algo_hash_cnt, algo_hash_fips_cnt;
-static ERL_NIF_TERM algo_hash[12];   /* increase when extending the list */
-static int algo_pubkey_cnt, algo_pubkey_fips_cnt;
-static ERL_NIF_TERM algo_pubkey[12]; /* increase when extending the list */
-static int algo_cipher_cnt, algo_cipher_fips_cnt;
-static ERL_NIF_TERM algo_cipher[25]; /* increase when extending the list */
-static int algo_mac_cnt, algo_mac_fips_cnt;
-static ERL_NIF_TERM algo_mac[3]; /* increase when extending the list */
-static int algo_curve_cnt, algo_curve_fips_cnt;
-static ERL_NIF_TERM algo_curve[89]; /* increase when extending the list */
-static int algo_rsa_opts_cnt, algo_rsa_opts_fips_cnt;
-static ERL_NIF_TERM algo_rsa_opts[11]; /* increase when extending the list */
-
-static void init_algorithms_types(ErlNifEnv* env)
-{
-    // Validated algorithms first
-    algo_hash_cnt = 0;
-    algo_hash[algo_hash_cnt++] = atom_sha;
-#ifdef HAVE_SHA224
-    algo_hash[algo_hash_cnt++] = enif_make_atom(env, "sha224");
-#endif
-#ifdef HAVE_SHA256
-    algo_hash[algo_hash_cnt++] = enif_make_atom(env, "sha256");
-#endif
-#ifdef HAVE_SHA384
-    algo_hash[algo_hash_cnt++] = enif_make_atom(env, "sha384");
-#endif
-#ifdef HAVE_SHA512
-    algo_hash[algo_hash_cnt++] = enif_make_atom(env, "sha512");
-#endif
-#ifdef HAVE_SHA3_224
-    algo_hash[algo_hash_cnt++] = enif_make_atom(env, "sha3_224");
-#endif
-#ifdef HAVE_SHA3_256
-    algo_hash[algo_hash_cnt++] = enif_make_atom(env, "sha3_256");
-#endif
-#ifdef HAVE_SHA3_384
-    algo_hash[algo_hash_cnt++] = enif_make_atom(env, "sha3_384");
-#endif
-#ifdef HAVE_SHA3_512
-    algo_hash[algo_hash_cnt++] = enif_make_atom(env, "sha3_512");
-#endif
-    // Non-validated algorithms follow
-    algo_hash_fips_cnt = algo_hash_cnt;
-    algo_hash[algo_hash_cnt++] = enif_make_atom(env, "md4");
-    algo_hash[algo_hash_cnt++] = enif_make_atom(env, "md5");
-    algo_hash[algo_hash_cnt++] = enif_make_atom(env, "ripemd160");
-
-    algo_pubkey_cnt = 0;
-    algo_pubkey[algo_pubkey_cnt++] = enif_make_atom(env, "rsa");
-    algo_pubkey[algo_pubkey_cnt++] = enif_make_atom(env, "dss");
-    algo_pubkey[algo_pubkey_cnt++] = enif_make_atom(env, "dh");
-#if defined(HAVE_EC)
-#if !defined(OPENSSL_NO_EC2M)
-    algo_pubkey[algo_pubkey_cnt++] = enif_make_atom(env, "ec_gf2m");
-#endif
-    algo_pubkey[algo_pubkey_cnt++] = enif_make_atom(env, "ecdsa");
-    algo_pubkey[algo_pubkey_cnt++] = enif_make_atom(env, "ecdh");
-#endif
-    // Non-validated algorithms follow
-    algo_pubkey_fips_cnt = algo_pubkey_cnt;
-    // Don't know if Edward curves are fips validated
-#if defined(HAVE_EDDSA)
-    algo_pubkey[algo_pubkey_cnt++] = enif_make_atom(env, "eddsa");
-#endif
-    algo_pubkey[algo_pubkey_cnt++] = enif_make_atom(env, "srp");
-
-    // Validated algorithms first
-    algo_cipher_cnt = 0;
-#ifndef OPENSSL_NO_DES
-    algo_cipher[algo_cipher_cnt++] = enif_make_atom(env, "des3_cbc");
-    algo_cipher[algo_cipher_cnt++] = enif_make_atom(env, "des_ede3");
-#ifdef HAVE_DES_ede3_cfb_encrypt
-    algo_cipher[algo_cipher_cnt++] = enif_make_atom(env, "des3_cbf");
-    algo_cipher[algo_cipher_cnt++] = enif_make_atom(env, "des3_cfb");
-#endif
-#endif
-    algo_cipher[algo_cipher_cnt++] = enif_make_atom(env, "aes_cbc");
-    algo_cipher[algo_cipher_cnt++] = enif_make_atom(env, "aes_cbc128");
-    algo_cipher[algo_cipher_cnt++] = enif_make_atom(env, "aes_cfb8");
-    algo_cipher[algo_cipher_cnt++] = enif_make_atom(env, "aes_cfb128");
-    algo_cipher[algo_cipher_cnt++] = enif_make_atom(env, "aes_cbc256");
-    algo_cipher[algo_cipher_cnt++] = enif_make_atom(env, "aes_ctr");
-    algo_cipher[algo_cipher_cnt++] = enif_make_atom(env, "aes_ecb");
-#if defined(HAVE_GCM)
-    algo_cipher[algo_cipher_cnt++] = enif_make_atom(env,"aes_gcm");
-#endif
-#if defined(HAVE_CCM)
-    algo_cipher[algo_cipher_cnt++] = enif_make_atom(env,"aes_ccm");
-#endif
-    // Non-validated algorithms follow
-    algo_cipher_fips_cnt = algo_cipher_cnt;
-#ifdef HAVE_AES_IGE
-    algo_cipher[algo_cipher_cnt++] = enif_make_atom(env,"aes_ige256");
-#endif
-#ifndef OPENSSL_NO_DES
-    algo_cipher[algo_cipher_cnt++] = enif_make_atom(env,"des_cbc");
-    algo_cipher[algo_cipher_cnt++] = enif_make_atom(env,"des_cfb");
-    algo_cipher[algo_cipher_cnt++] = enif_make_atom(env,"des_ecb");
-#endif
-    algo_cipher[algo_cipher_cnt++] = enif_make_atom(env,"blowfish_cbc");
-    algo_cipher[algo_cipher_cnt++] = enif_make_atom(env,"blowfish_cfb64");
-    algo_cipher[algo_cipher_cnt++] = enif_make_atom(env,"blowfish_ofb64");
-    algo_cipher[algo_cipher_cnt++] = enif_make_atom(env,"blowfish_ecb");
-#ifndef OPENSSL_NO_RC2
-    algo_cipher[algo_cipher_cnt++] = enif_make_atom(env,"rc2_cbc");
-#endif
-#ifndef OPENSSL_NO_RC4
-    algo_cipher[algo_cipher_cnt++] = enif_make_atom(env,"rc4");
-#endif
-#if defined(HAVE_CHACHA20_POLY1305)
-    algo_cipher[algo_cipher_cnt++] = enif_make_atom(env,"chacha20_poly1305");
-#endif
-#if defined(HAVE_CHACHA20)
-    algo_cipher[algo_cipher_cnt++] = enif_make_atom(env,"chacha20");
-#endif
- 
-    // Validated algorithms first
-    algo_mac_cnt = 0;
-    algo_mac[algo_mac_cnt++] = enif_make_atom(env,"hmac");
-#ifdef HAVE_CMAC
-    algo_mac[algo_mac_cnt++] = enif_make_atom(env,"cmac");
-#endif
-#ifdef HAVE_POLY1305
-    algo_mac[algo_mac_cnt++] = enif_make_atom(env,"poly1305");
-#endif
-    // Non-validated algorithms follow
-    algo_mac_fips_cnt = algo_mac_cnt;
-
-    // Validated algorithms first
-    algo_curve_cnt = 0;
-#if defined(HAVE_EC)
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"secp160k1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"secp160r1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"secp160r2");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"secp192r1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"secp192k1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"secp224k1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"secp224r1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"secp256k1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"secp256r1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"secp384r1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"secp521r1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"prime192v1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"prime192v2");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"prime192v3");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"prime239v1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"prime239v2");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"prime239v3");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"prime256v1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"wtls7");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"wtls9");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"wtls12");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"brainpoolP160r1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"brainpoolP160t1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"brainpoolP192r1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"brainpoolP192t1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"brainpoolP224r1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"brainpoolP224t1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"brainpoolP256r1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"brainpoolP256t1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"brainpoolP320r1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"brainpoolP320t1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"brainpoolP384r1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"brainpoolP384t1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"brainpoolP512r1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"brainpoolP512t1");
-#if !defined(OPENSSL_NO_EC2M)
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"sect163k1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"sect163r1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"sect163r2");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"sect193r1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"sect193r2");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"sect233k1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"sect233r1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"sect239k1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"sect283k1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"sect283r1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"sect409k1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"sect409r1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"sect571k1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"sect571r1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"c2pnb163v1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"c2pnb163v2");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"c2pnb163v3");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"c2pnb176v1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"c2tnb191v1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"c2tnb191v2");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"c2tnb191v3");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"c2pnb208w1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"c2tnb239v1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"c2tnb239v2");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"c2tnb239v3");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"c2pnb272w1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"c2pnb304w1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"c2tnb359v1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"c2pnb368w1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"c2tnb431r1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"wtls3");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"wtls5");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"wtls10");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"wtls11");
-#endif
-#endif
-    // Non-validated algorithms follow
-    algo_curve_fips_cnt = algo_curve_cnt;
-#if defined(HAVE_EC)
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"secp112r1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"secp112r2");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"secp128r1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"secp128r2");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"wtls6");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"wtls8");
-#if !defined(OPENSSL_NO_EC2M)
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"sect113r1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"sect113r2");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"sect131r1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"sect131r2");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"wtls1");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"wtls4");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"ipsec3");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"ipsec4");
-#endif
-#endif
-    //--
-#ifdef HAVE_EDDSA
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"ed25519");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"ed448");
-#endif
-#ifdef HAVE_ED_CURVE_DH
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"x25519");
-    algo_curve[algo_curve_cnt++] = enif_make_atom(env,"x448");
-#endif
-
-    // Validated algorithms first
-    algo_rsa_opts_cnt = 0;
-#ifdef HAS_EVP_PKEY_CTX
-# ifdef HAVE_RSA_PKCS1_PSS_PADDING
-    algo_rsa_opts[algo_rsa_opts_cnt++] = enif_make_atom(env,"rsa_pkcs1_pss_padding");
-    algo_rsa_opts[algo_rsa_opts_cnt++] = enif_make_atom(env,"rsa_pss_saltlen");
-# endif
-# ifdef HAVE_RSA_MGF1_MD
-    algo_rsa_opts[algo_rsa_opts_cnt++] = enif_make_atom(env,"rsa_mgf1_md");
-# endif
-# ifdef HAVE_RSA_OAEP_PADDING
-    algo_rsa_opts[algo_rsa_opts_cnt++] = enif_make_atom(env,"rsa_pkcs1_oaep_padding");
-# endif
-# ifdef HAVE_RSA_OAEP_MD
-    algo_rsa_opts[algo_rsa_opts_cnt++] = enif_make_atom(env,"rsa_oaep_label");
-    algo_rsa_opts[algo_rsa_opts_cnt++] = enif_make_atom(env,"rsa_oaep_md");
-# endif
-    algo_rsa_opts[algo_rsa_opts_cnt++] = enif_make_atom(env,"signature_md");
-#endif
-    algo_rsa_opts[algo_rsa_opts_cnt++] = enif_make_atom(env,"rsa_pkcs1_padding");
-    algo_rsa_opts[algo_rsa_opts_cnt++] = enif_make_atom(env,"rsa_x931_padding");
-#ifdef HAVE_RSA_SSLV23_PADDING
-    algo_rsa_opts[algo_rsa_opts_cnt++] = enif_make_atom(env,"rsa_sslv23_padding");
-#endif
-    algo_rsa_opts[algo_rsa_opts_cnt++] = enif_make_atom(env,"rsa_no_padding");
-    algo_rsa_opts_fips_cnt = algo_rsa_opts_cnt;
-
-
-    // Check that the max number of algos is updated
-    ASSERT(algo_hash_cnt <= sizeof(algo_hash)/sizeof(ERL_NIF_TERM));
-    ASSERT(algo_pubkey_cnt <= sizeof(algo_pubkey)/sizeof(ERL_NIF_TERM));
-    ASSERT(algo_cipher_cnt <= sizeof(algo_cipher)/sizeof(ERL_NIF_TERM));
-    ASSERT(algo_mac_cnt <= sizeof(algo_mac)/sizeof(ERL_NIF_TERM));
-    ASSERT(algo_curve_cnt <= sizeof(algo_curve)/sizeof(ERL_NIF_TERM));
-    ASSERT(algo_rsa_opts_cnt <= sizeof(algo_rsa_opts)/sizeof(ERL_NIF_TERM));
-}
-
-static ERL_NIF_TERM algorithms(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{
-#ifdef FIPS_SUPPORT
-    int fips_mode  = FIPS_mode();
-    int hash_cnt   = fips_mode ? algo_hash_fips_cnt   : algo_hash_cnt;
-    int pubkey_cnt = fips_mode ? algo_pubkey_fips_cnt : algo_pubkey_cnt;
-    int cipher_cnt = fips_mode ? algo_cipher_fips_cnt : algo_cipher_cnt;
-    int mac_cnt    = fips_mode ? algo_mac_fips_cnt    : algo_mac_cnt;
-    int curve_cnt    = fips_mode ? algo_curve_fips_cnt    : algo_curve_cnt;
-    int rsa_opts_cnt = fips_mode ? algo_rsa_opts_fips_cnt : algo_rsa_opts_cnt;
-#else
-    int hash_cnt   = algo_hash_cnt;
-    int pubkey_cnt = algo_pubkey_cnt;
-    int cipher_cnt = algo_cipher_cnt;
-    int mac_cnt    = algo_mac_cnt;
-    int curve_cnt    = algo_curve_cnt;
-    int rsa_opts_cnt = algo_rsa_opts_cnt;
-#endif
-    return enif_make_tuple6(env,
-                            enif_make_list_from_array(env, algo_hash,   hash_cnt),
-			    enif_make_list_from_array(env, algo_pubkey, pubkey_cnt),
-			    enif_make_list_from_array(env, algo_cipher, cipher_cnt),
-                            enif_make_list_from_array(env, algo_mac,    mac_cnt),
-			    enif_make_list_from_array(env, algo_curve,  curve_cnt),
-			    enif_make_list_from_array(env, algo_rsa_opts, rsa_opts_cnt)
-                            );
-}
-
-static ERL_NIF_TERM info_lib(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{
-    /* [{<<"OpenSSL">>,9470143,<<"OpenSSL 0.9.8k 25 Mar 2009">>}] */
-
-    static const char libname[] = "OpenSSL";
-    unsigned name_sz = strlen(libname);
-    const char* ver = SSLeay_version(SSLEAY_VERSION);
-    unsigned ver_sz = strlen(ver);
-    ERL_NIF_TERM name_term, ver_term;
-    int ver_num = OPENSSL_VERSION_NUMBER;
-    /* R16:
-     * Ignore library version number from SSLeay() and instead show header
-     * version. Otherwise user might try to call a function that is implemented
-     * by a newer library but not supported by the headers used at compile time.
-     * Example: DES_ede3_cfb_encrypt in 0.9.7i but not in 0.9.7d.
-     *
-     * Version string is still from library though.
-     */
-
-    memcpy(enif_make_new_binary(env, name_sz, &name_term), libname, name_sz);
-    memcpy(enif_make_new_binary(env, ver_sz, &ver_term), ver, ver_sz);
-
-    return enif_make_list1(env, enif_make_tuple3(env, name_term,
-						 enif_make_int(env, ver_num),
-						 ver_term));
-}
-
-static ERL_NIF_TERM info_fips(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{
-#ifdef FIPS_SUPPORT
-    return FIPS_mode() ? atom_enabled : atom_not_enabled;
-#else
-    return atom_not_supported;
-#endif
-}
-
-static ERL_NIF_TERM enable_fips_mode(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Boolean) */
-    if (argv[0] == atom_true) {
-#ifdef FIPS_SUPPORT
-        if (FIPS_mode_set(1)) {
-            return atom_true;
-        }
-#endif
-        PRINTF_ERR0("CRYPTO: Could not setup FIPS mode");
-        return atom_false;
-    } else if (argv[0] == atom_false) {
-#ifdef FIPS_SUPPORT
-        if (!FIPS_mode_set(0)) {
-            return atom_false;
-        }
-#endif
-        return atom_true;
-    } else {
-        return enif_make_badarg(env);
-    }
-}
-
-
-#if defined(HAVE_EC)
-static ERL_NIF_TERM make_badarg_maybe(ErlNifEnv* env)
-{
-    ERL_NIF_TERM reason;
-    if (enif_has_pending_exception(env, &reason))
-	return reason; /* dummy return value ignored */
-    else
-	return enif_make_badarg(env);
-}
-#endif
-
-static ERL_NIF_TERM hash_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Type, Data) */
-    struct digest_type_t *digp = NULL;
-    const EVP_MD         *md;
-    ErlNifBinary         data;
-    ERL_NIF_TERM         ret;
-    unsigned             ret_size;
-
-    digp = get_digest_type(argv[0]);
-    if (!digp ||
-        !enif_inspect_iolist_as_binary(env, argv[1], &data)) {
-	return enif_make_badarg(env);
-    }
-    md = digp->md.p;
-    if (!md) {
-	return atom_notsup;
-    }
-
-    ret_size = (unsigned)EVP_MD_size(md);
-    ASSERT(0 < ret_size && ret_size <= EVP_MAX_MD_SIZE);
-    if (!EVP_Digest(data.data, data.size,
-                    enif_make_new_binary(env, ret_size, &ret), &ret_size,
-                    md, NULL)) {
-        return atom_notsup;
-    }
-    ASSERT(ret_size == (unsigned)EVP_MD_size(md));
-
-    CONSUME_REDS(env, data);
-    return ret;
-}
-
-#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(1,0,0)
-
-static ERL_NIF_TERM hash_init_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Type) */
-    struct digest_type_t *digp = NULL;
-    struct evp_md_ctx    *ctx;
-    ERL_NIF_TERM         ret;
-
-    digp = get_digest_type(argv[0]);
-    if (!digp) {
-	return enif_make_badarg(env);
-    }
-    if (!digp->md.p) {
-	return atom_notsup;
-    }
-
-    ctx = enif_alloc_resource(evp_md_ctx_rtype, sizeof(struct evp_md_ctx));
-    ctx->ctx = EVP_MD_CTX_new();
-    if (!EVP_DigestInit(ctx->ctx, digp->md.p)) {
-        enif_release_resource(ctx);
-        return atom_notsup;
-    }
-    ret = enif_make_resource(env, ctx);
-    enif_release_resource(ctx);
-    return ret;
-}
-static ERL_NIF_TERM hash_update_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Context, Data) */
-    struct evp_md_ctx   *ctx, *new_ctx;
-    ErlNifBinary data;
-    ERL_NIF_TERM ret;
-
-    if (!enif_get_resource(env, argv[0], evp_md_ctx_rtype, (void**)&ctx) ||
-        !enif_inspect_iolist_as_binary(env, argv[1], &data)) {
-        return enif_make_badarg(env);
-    }
-
-    new_ctx = enif_alloc_resource(evp_md_ctx_rtype, sizeof(struct evp_md_ctx));
-    new_ctx->ctx = EVP_MD_CTX_new();
-    if (!EVP_MD_CTX_copy(new_ctx->ctx, ctx->ctx) ||
-        !EVP_DigestUpdate(new_ctx->ctx, data.data, data.size)) {
-        enif_release_resource(new_ctx);
-        return atom_notsup;
-    }
-
-    ret = enif_make_resource(env, new_ctx);
-    enif_release_resource(new_ctx);
-    CONSUME_REDS(env, data);
-    return ret;
-}
-static ERL_NIF_TERM hash_final_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Context) */
-    struct evp_md_ctx *ctx;
-    EVP_MD_CTX        *new_ctx;
-    ERL_NIF_TERM  ret;
-    unsigned      ret_size;
-
-    if (!enif_get_resource(env, argv[0], evp_md_ctx_rtype, (void**)&ctx)) {
-        return enif_make_badarg(env);
-    }
-
-    ret_size = (unsigned)EVP_MD_CTX_size(ctx->ctx);
-    ASSERT(0 < ret_size && ret_size <= EVP_MAX_MD_SIZE);
-
-    new_ctx = EVP_MD_CTX_new();
-    if (!EVP_MD_CTX_copy(new_ctx, ctx->ctx) ||
-        !EVP_DigestFinal(new_ctx,
-                         enif_make_new_binary(env, ret_size, &ret),
-                         &ret_size)) {
-	EVP_MD_CTX_free(new_ctx);
-        return atom_notsup;
-    }
-    EVP_MD_CTX_free(new_ctx);
-    ASSERT(ret_size == (unsigned)EVP_MD_CTX_size(ctx->ctx));
-
-    return ret;
-}
-
-#else /* if OPENSSL_VERSION_NUMBER < 1.0 */
-
-static ERL_NIF_TERM hash_init_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Type) */
-    typedef int (*init_fun)(unsigned char*);
-    struct digest_type_t *digp = NULL;
-    ERL_NIF_TERM         ctx;
-    size_t               ctx_size = 0;
-    init_fun             ctx_init = 0;
-
-    digp = get_digest_type(argv[0]);
-    if (!digp) {
-	return enif_make_badarg(env);
-    }
-    if (!digp->md.p) {
-	return atom_notsup;
-    }
-
-    switch (EVP_MD_type(digp->md.p))
-    {
-    case NID_md4:
-        ctx_size = MD4_CTX_LEN;
-        ctx_init = (init_fun)(&MD4_Init);
-        break;
-    case NID_md5:
-        ctx_size = MD5_CTX_LEN;
-        ctx_init = (init_fun)(&MD5_Init);
-        break;
-    case NID_ripemd160:
-        ctx_size = RIPEMD160_CTX_LEN;
-        ctx_init = (init_fun)(&RIPEMD160_Init);
-        break;
-    case NID_sha1:
-        ctx_size = sizeof(SHA_CTX);
-        ctx_init = (init_fun)(&SHA1_Init);
-        break;
-#ifdef HAVE_SHA224
-    case NID_sha224:
-        ctx_size = sizeof(SHA256_CTX);
-        ctx_init = (init_fun)(&SHA224_Init);
-        break;
-#endif
-#ifdef HAVE_SHA256
-    case NID_sha256:
-        ctx_size = sizeof(SHA256_CTX);
-        ctx_init = (init_fun)(&SHA256_Init);
-        break;
-#endif
-#ifdef HAVE_SHA384
-    case NID_sha384:
-        ctx_size = sizeof(SHA512_CTX);
-        ctx_init = (init_fun)(&SHA384_Init);
-        break;
-#endif
-#ifdef HAVE_SHA512
-    case NID_sha512:
-        ctx_size = sizeof(SHA512_CTX);
-        ctx_init = (init_fun)(&SHA512_Init);
-        break;
-#endif
-    default:
-        return atom_notsup;
-    }
-    ASSERT(ctx_size);
-    ASSERT(ctx_init);
-
-    ctx_init(enif_make_new_binary(env, ctx_size, &ctx));
-    return enif_make_tuple2(env, argv[0], ctx);
-}
-static ERL_NIF_TERM hash_update_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* ({Type, Context}, Data) */
-    typedef int (*update_fun)(unsigned char*, const unsigned char*, size_t);
-    ERL_NIF_TERM         new_ctx;
-    ErlNifBinary         ctx, data;
-    const ERL_NIF_TERM   *tuple;
-    int                  arity;
-    struct digest_type_t *digp = NULL;
-    unsigned char        *ctx_buff;
-    size_t               ctx_size   = 0;
-    update_fun           ctx_update = 0;
-
-    if (!enif_get_tuple(env, argv[0], &arity, &tuple) ||
-        arity != 2 ||
-        !(digp = get_digest_type(tuple[0])) ||
-        !enif_inspect_binary(env, tuple[1], &ctx) ||
-        !enif_inspect_iolist_as_binary(env, argv[1], &data)) {
-        return enif_make_badarg(env);
-    }
-    if (!digp->md.p) {
-	return atom_notsup;
-    }
-
-    switch (EVP_MD_type(digp->md.p))
-    {
-    case NID_md4:
-        ctx_size   = MD4_CTX_LEN;
-        ctx_update = (update_fun)(&MD4_Update);
-        break;
-    case NID_md5:
-        ctx_size   = MD5_CTX_LEN;
-        ctx_update = (update_fun)(&MD5_Update);
-        break;
-    case NID_ripemd160:
-        ctx_size   = RIPEMD160_CTX_LEN;
-        ctx_update = (update_fun)(&RIPEMD160_Update);
-        break;
-    case NID_sha1:
-        ctx_size   = sizeof(SHA_CTX);
-        ctx_update = (update_fun)(&SHA1_Update);
-        break;
-#ifdef HAVE_SHA224
-    case NID_sha224:
-        ctx_size   = sizeof(SHA256_CTX);
-        ctx_update = (update_fun)(&SHA224_Update);
-        break;
-#endif
-#ifdef HAVE_SHA256
-    case NID_sha256:
-        ctx_size   = sizeof(SHA256_CTX);
-        ctx_update = (update_fun)(&SHA256_Update);
-        break;
-#endif
-#ifdef HAVE_SHA384
-    case NID_sha384:
-        ctx_size   = sizeof(SHA512_CTX);
-        ctx_update = (update_fun)(&SHA384_Update);
-        break;
-#endif
-#ifdef HAVE_SHA512
-    case NID_sha512:
-        ctx_size   = sizeof(SHA512_CTX);
-        ctx_update = (update_fun)(&SHA512_Update);
-        break;
-#endif
-    default:
-        return atom_notsup;
-    }
-    ASSERT(ctx_size);
-    ASSERT(ctx_update);
-
-    if (ctx.size != ctx_size) {
-        return enif_make_badarg(env);
-    }
-
-    ctx_buff = enif_make_new_binary(env, ctx_size, &new_ctx);
-    memcpy(ctx_buff, ctx.data, ctx_size);
-    ctx_update(ctx_buff, data.data, data.size);
-
-    CONSUME_REDS(env, data);
-    return enif_make_tuple2(env, tuple[0], new_ctx);
-}
-static ERL_NIF_TERM hash_final_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* ({Type, Context}) */
-    typedef int (*final_fun)(unsigned char*, void*);
-    ERL_NIF_TERM         ret;
-    ErlNifBinary         ctx;
-    const ERL_NIF_TERM   *tuple;
-    int                  arity;
-    struct digest_type_t *digp = NULL;
-    const EVP_MD         *md;
-    void                 *new_ctx;
-    size_t               ctx_size  = 0;
-    final_fun            ctx_final = 0;
-
-    if (!enif_get_tuple(env, argv[0], &arity, &tuple) ||
-        arity != 2 ||
-        !(digp = get_digest_type(tuple[0])) ||
-        !enif_inspect_binary(env, tuple[1], &ctx)) {
-        return enif_make_badarg(env);
-    }
-    md = digp->md.p;
-    if (!md) {
-	return atom_notsup;
-    }
-
-
-    switch (EVP_MD_type(md))
-    {
-    case NID_md4:
-        ctx_size  = MD4_CTX_LEN;
-        ctx_final = (final_fun)(&MD4_Final);
-        break;
-    case NID_md5:
-        ctx_size  = MD5_CTX_LEN;
-        ctx_final = (final_fun)(&MD5_Final);
-        break;
-    case NID_ripemd160:
-        ctx_size  = RIPEMD160_CTX_LEN;
-        ctx_final = (final_fun)(&RIPEMD160_Final);
-        break;
-    case NID_sha1:
-        ctx_size  = sizeof(SHA_CTX);
-        ctx_final = (final_fun)(&SHA1_Final);
-        break;
-#ifdef HAVE_SHA224
-    case NID_sha224:
-        ctx_size  = sizeof(SHA256_CTX);
-        ctx_final = (final_fun)(&SHA224_Final);
-        break;
-#endif
-#ifdef HAVE_SHA256
-    case NID_sha256:
-        ctx_size  = sizeof(SHA256_CTX);
-        ctx_final = (final_fun)(&SHA256_Final);
-        break;
-#endif
-#ifdef HAVE_SHA384
-    case NID_sha384:
-        ctx_size  = sizeof(SHA512_CTX);
-        ctx_final = (final_fun)(&SHA384_Final);
-        break;
-#endif
-#ifdef HAVE_SHA512
-    case NID_sha512:
-        ctx_size  = sizeof(SHA512_CTX);
-        ctx_final = (final_fun)(&SHA512_Final);
-        break;
-#endif
-    default:
-        return atom_notsup;
-    }
-    ASSERT(ctx_size);
-    ASSERT(ctx_final);
-
-    if (ctx.size != ctx_size) {
-        return enif_make_badarg(env);
-    }
-
-    new_ctx = enif_alloc(ctx_size);
-    memcpy(new_ctx, ctx.data, ctx_size);
-    ctx_final(enif_make_new_binary(env, (size_t)EVP_MD_size(md), &ret),
-              new_ctx);
-    enif_free(new_ctx);
-
-    return ret;
-}
-#endif  /* OPENSSL_VERSION_NUMBER < 1.0 */
-
-
-static ERL_NIF_TERM hmac_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Type, Key, Data) or (Type, Key, Data, MacSize) */
-    struct digest_type_t *digp = NULL;
-    ErlNifBinary         key, data;
-    unsigned char        buff[EVP_MAX_MD_SIZE];
-    unsigned             size = 0, req_size = 0;
-    ERL_NIF_TERM         ret;
-
-    digp = get_digest_type(argv[0]);
-    if (!digp ||
-        !enif_inspect_iolist_as_binary(env, argv[1], &key) ||
-        !enif_inspect_iolist_as_binary(env, argv[2], &data) ||
-        (argc == 4 && !enif_get_uint(env, argv[3], &req_size))) {
-        return enif_make_badarg(env);
-    }
-
-    if (!digp->md.p ||
-        !HMAC(digp->md.p,
-              key.data, key.size,
-              data.data, data.size,
-              buff, &size)) {
-        return atom_notsup;
-    }
-    ASSERT(0 < size && size <= EVP_MAX_MD_SIZE);
-    CONSUME_REDS(env, data);
-
-    if (argc == 4) {
-        if (req_size <= size) {
-            size = req_size;
-        }
-        else {
-            return enif_make_badarg(env);
-        }
-    }
-    memcpy(enif_make_new_binary(env, size, &ret), buff, size);
-    return ret;
-}
-
-static void hmac_context_dtor(ErlNifEnv* env, struct hmac_context *obj)
-{
-    if (obj->alive) {
-	HMAC_CTX_free(obj->ctx);
-	obj->alive = 0;
-    }
-    enif_mutex_destroy(obj->mtx);
-}
-
-static ERL_NIF_TERM hmac_init_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Type, Key) */
-    struct digest_type_t *digp = NULL;
-    ErlNifBinary         key;
-    ERL_NIF_TERM         ret;
-    struct hmac_context  *obj;
-
-    digp = get_digest_type(argv[0]);
-    if (!digp ||
-        !enif_inspect_iolist_as_binary(env, argv[1], &key)) {
-        return enif_make_badarg(env);
-    }
-    if (!digp->md.p) {
-        return atom_notsup;
-    }
-
-    obj = enif_alloc_resource(hmac_context_rtype, sizeof(struct hmac_context));
-    obj->mtx = enif_mutex_create("crypto.hmac");
-    obj->alive = 1;
-    obj->ctx = HMAC_CTX_new();
-#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(1,0,0)
-    // Check the return value of HMAC_Init: it may fail in FIPS mode
-    // for disabled algorithms
-    if (!HMAC_Init_ex(obj->ctx, key.data, key.size, digp->md.p, NULL)) {
-        enif_release_resource(obj);
-        return atom_notsup;
-    }
-#else
-    HMAC_Init_ex(obj->ctx, key.data, key.size, digp->md.p, NULL);
-#endif
-
-    ret = enif_make_resource(env, obj);
-    enif_release_resource(obj);
-    return ret;
-}
-
-static ERL_NIF_TERM hmac_update_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Context, Data) */
-    ErlNifBinary data;
-    struct hmac_context* obj;
-
-    if (!enif_get_resource(env, argv[0], hmac_context_rtype, (void**)&obj)
-	|| !enif_inspect_iolist_as_binary(env, argv[1], &data)) {
-	return enif_make_badarg(env);
-    }
-    enif_mutex_lock(obj->mtx);
-    if (!obj->alive) {
-	enif_mutex_unlock(obj->mtx);
-	return enif_make_badarg(env);
-    }
-    HMAC_Update(obj->ctx, data.data, data.size);
-    enif_mutex_unlock(obj->mtx);
-
-    CONSUME_REDS(env,data);
-    return argv[0];
-}
-
-static ERL_NIF_TERM hmac_final_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Context) or (Context, HashLen) */
-    ERL_NIF_TERM ret;
-    struct hmac_context* obj;
-    unsigned char mac_buf[EVP_MAX_MD_SIZE];
-    unsigned char * mac_bin;
-    unsigned int req_len = 0;
-    unsigned int mac_len;
-
-    if (!enif_get_resource(env,argv[0],hmac_context_rtype, (void**)&obj)
-	|| (argc == 2 && !enif_get_uint(env, argv[1], &req_len))) {
-	return enif_make_badarg(env);
-    }
-
-    enif_mutex_lock(obj->mtx);
-    if (!obj->alive) {
-	enif_mutex_unlock(obj->mtx);
-	return enif_make_badarg(env);
-    }
-
-    HMAC_Final(obj->ctx, mac_buf, &mac_len);
-    HMAC_CTX_free(obj->ctx);
-    obj->alive = 0;
-    enif_mutex_unlock(obj->mtx);
-
-    if (argc == 2 && req_len < mac_len) {
-        /* Only truncate to req_len bytes if asked. */
-        mac_len = req_len;
-    }
-    mac_bin = enif_make_new_binary(env, mac_len, &ret);
-    memcpy(mac_bin, mac_buf, mac_len);
-
-    return ret;
-}
-
-static ERL_NIF_TERM cmac_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Type, Key, Data) */
-#if defined(HAVE_CMAC)
-    struct cipher_type_t *cipherp = NULL;
-    const EVP_CIPHER     *cipher;
-    CMAC_CTX             *ctx;
-    ErlNifBinary         key;
-    ErlNifBinary         data;
-    ERL_NIF_TERM         ret;
-    size_t               ret_size;
-
-    if (!enif_inspect_iolist_as_binary(env, argv[1], &key)
-        || !(cipherp = get_cipher_type(argv[0], key.size))
-        || !enif_inspect_iolist_as_binary(env, argv[2], &data)) {
-        return enif_make_badarg(env);
-    }
-    cipher = cipherp->cipher.p;
-    if (!cipher) {
-        return enif_raise_exception(env, atom_notsup);
-    }
-
-    ctx = CMAC_CTX_new();
-    if (!CMAC_Init(ctx, key.data, key.size, cipher, NULL)) {
-        CMAC_CTX_free(ctx);
-        return atom_notsup;
-    }
-
-    if (!CMAC_Update(ctx, data.data, data.size) ||
-        !CMAC_Final(ctx,
-                    enif_make_new_binary(env, EVP_CIPHER_block_size(cipher), &ret),
-                    &ret_size)) {
-        CMAC_CTX_free(ctx);
-        return atom_notsup;
-    }
-    ASSERT(ret_size == (unsigned)EVP_CIPHER_block_size(cipher));
-
-    CMAC_CTX_free(ctx);
-    CONSUME_REDS(env, data);
-    return ret;
-#else
-    /* The CMAC functionality was introduced in OpenSSL 1.0.1
-     * Although OTP requires at least version 0.9.8, the versions 0.9.8 and 1.0.0 are
-     * no longer maintained. */
-    return atom_notsup;
-#endif
-}
-
-/* For OpenSSL >= 1.1.1 the hmac_nif and cmac_nif could be integrated into poly1305 (with 'type' as parameter) */
-static ERL_NIF_TERM poly1305_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Key, Text) */
-#ifdef HAVE_POLY1305
-    ErlNifBinary key_bin, text, ret_bin;
-    ERL_NIF_TERM ret = atom_error;
-    EVP_PKEY *key = NULL;
-    EVP_MD_CTX *mctx = NULL;
-    EVP_PKEY_CTX *pctx = NULL;
-    const EVP_MD *md = NULL;
-    size_t size;
-    int type;
-
-    type = EVP_PKEY_POLY1305;
-
-    if (!enif_inspect_binary(env, argv[0], &key_bin) ||
-        !(key_bin.size == 32) ) {
-        return enif_make_badarg(env);
-    }
-    
-    if (!enif_inspect_binary(env, argv[1], &text) ) {
-        return enif_make_badarg(env);
-    }
-
-    key = EVP_PKEY_new_raw_private_key(type, /*engine*/ NULL, key_bin.data,  key_bin.size);
-
-    if (!key ||
-        !(mctx = EVP_MD_CTX_new()) ||
-        !EVP_DigestSignInit(mctx, &pctx, md, /*engine*/ NULL, key) ||
-        !EVP_DigestSignUpdate(mctx, text.data, text.size)) {
-        goto err;
-    }
-    
-    if (!EVP_DigestSignFinal(mctx, NULL, &size) ||
-        !enif_alloc_binary(size, &ret_bin) ||
-        !EVP_DigestSignFinal(mctx, ret_bin.data, &size)) {
-        goto err;
-    }
-
-    if ((size != ret_bin.size) &&
-        !enif_realloc_binary(&ret_bin, size)) {
-        goto err;
-    }
-
-    ret = enif_make_binary(env, &ret_bin);
-
- err:
-    EVP_MD_CTX_free(mctx);
-    EVP_PKEY_free(key);
-    return ret;
-
-#else
-    return atom_notsup;
-#endif
-}
-
-static ERL_NIF_TERM block_crypt_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Type, Key, Ivec, Text, IsEncrypt) or (Type, Key, Text, IsEncrypt) */
-    struct cipher_type_t *cipherp = NULL;
-    const EVP_CIPHER     *cipher;
-    ErlNifBinary         key, ivec, text;
-    EVP_CIPHER_CTX*      ctx;
-    ERL_NIF_TERM         ret;
-    unsigned char        *out;
-    int                  ivec_size, out_size = 0;
-
-    if (!enif_inspect_iolist_as_binary(env, argv[1], &key)
-        || !(cipherp = get_cipher_type(argv[0], key.size))
-        || !enif_inspect_iolist_as_binary(env, argv[argc - 2], &text)) {
-        return enif_make_badarg(env);
-    }
-    cipher = cipherp->cipher.p;
-    if (!cipher) {
-        return enif_raise_exception(env, atom_notsup);
-    }
-
-    if (argv[0] == atom_aes_cfb8
-        && (key.size == 24 || key.size == 32)) {
-        /* Why do EVP_CIPHER_CTX_set_key_length() fail on these key sizes?
-         * Fall back on low level API
-         */
-        return aes_cfb_8_crypt(env, argc-1, argv+1);
-    }
-    else if (argv[0] == atom_aes_cfb128
-        && (key.size == 24 || key.size == 32)) {
-        /* Why do EVP_CIPHER_CTX_set_key_length() fail on these key sizes?
-         * Fall back on low level API
-         */
-        return aes_cfb_128_crypt_nif(env, argc-1, argv+1);
-   }
-
-    ivec_size  = EVP_CIPHER_iv_length(cipher);
-
-#ifdef HAVE_ECB_IVEC_BUG
-    if (argv[0] == atom_aes_ecb || argv[0] == atom_blowfish_ecb ||
-	argv[0] == atom_des_ecb)
-	ivec_size = 0; /* 0.9.8l returns faulty ivec_size */
-#endif
-
-    if (text.size % EVP_CIPHER_block_size(cipher) != 0 ||
-        (ivec_size == 0 ? argc != 4
-                      : (argc != 5 ||
-                         !enif_inspect_iolist_as_binary(env, argv[2], &ivec) ||
-                         ivec.size != ivec_size))) {
-        return enif_make_badarg(env);
-    }
-
-    out = enif_make_new_binary(env, text.size, &ret);
-
-    ctx = EVP_CIPHER_CTX_new();
-    if (!EVP_CipherInit_ex(ctx, cipher, NULL, NULL, NULL,
-                           (argv[argc - 1] == atom_true)) ||
-        !EVP_CIPHER_CTX_set_key_length(ctx, key.size) ||
-        !(EVP_CIPHER_type(cipher) != NID_rc2_cbc ||
-          EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_SET_RC2_KEY_BITS, key.size * 8, NULL)) ||
-        !EVP_CipherInit_ex(ctx, NULL, NULL,
-                           key.data, ivec_size ? ivec.data : NULL, -1) ||
-        !EVP_CIPHER_CTX_set_padding(ctx, 0)) {
-
-        EVP_CIPHER_CTX_free(ctx);
-        return enif_raise_exception(env, atom_notsup);
-    }
-
-    if (text.size > 0 && /* OpenSSL 0.9.8h asserts text.size > 0 */
-        (!EVP_CipherUpdate(ctx, out, &out_size, text.data, text.size)
-         || (ASSERT(out_size == text.size), 0)
-         || !EVP_CipherFinal_ex(ctx, out + out_size, &out_size))) {
-
-        EVP_CIPHER_CTX_free(ctx);
-        return enif_raise_exception(env, atom_notsup);
-    }
-    ASSERT(out_size == 0);
-    EVP_CIPHER_CTX_free(ctx);
-    CONSUME_REDS(env, text);
-
-    return ret;
-}
-
-static ERL_NIF_TERM aes_cfb_8_crypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Key, IVec, Data, IsEncrypt) */
-     ErlNifBinary key, ivec, text;
-     AES_KEY aes_key;
-     unsigned char ivec_clone[16]; /* writable copy */
-     int new_ivlen = 0;
-     ERL_NIF_TERM ret;
-
-     CHECK_NO_FIPS_MODE();
-
-     if (!enif_inspect_iolist_as_binary(env, argv[0], &key)
-         || !(key.size == 16 || key.size == 24 || key.size == 32)
-         || !enif_inspect_binary(env, argv[1], &ivec) || ivec.size != 16
-         || !enif_inspect_iolist_as_binary(env, argv[2], &text)) {
-         return enif_make_badarg(env);
-     }
-
-     memcpy(ivec_clone, ivec.data, 16);
-     AES_set_encrypt_key(key.data, key.size * 8, &aes_key);
-     AES_cfb8_encrypt((unsigned char *) text.data,
-                      enif_make_new_binary(env, text.size, &ret),
-                      text.size, &aes_key, ivec_clone, &new_ivlen,
-                      (argv[3] == atom_true));
-     CONSUME_REDS(env,text);
-     return ret;
-}
-
-static ERL_NIF_TERM aes_cfb_128_crypt_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Key, IVec, Data, IsEncrypt) */
-    ErlNifBinary key, ivec, text;
-    AES_KEY aes_key;
-    unsigned char ivec_clone[16]; /* writable copy */
-    int new_ivlen = 0;
-    ERL_NIF_TERM ret;
-
-    if (!enif_inspect_iolist_as_binary(env, argv[0], &key)
-        || !(key.size == 16 || key.size == 24 || key.size == 32)
-        || !enif_inspect_binary(env, argv[1], &ivec) || ivec.size != 16
-        || !enif_inspect_iolist_as_binary(env, argv[2], &text)) {
-        return enif_make_badarg(env);
-    }
-
-    memcpy(ivec_clone, ivec.data, 16);
-    AES_set_encrypt_key(key.data, key.size * 8, &aes_key);
-    AES_cfb128_encrypt((unsigned char *) text.data,
-                       enif_make_new_binary(env, text.size, &ret),
-                       text.size, &aes_key, ivec_clone, &new_ivlen,
-                       (argv[3] == atom_true));
-    CONSUME_REDS(env,text);
-    return ret;
-}
-
-static ERL_NIF_TERM aes_ige_crypt_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Key, IVec, Data, IsEncrypt) */
-#ifdef HAVE_AES_IGE
-    ErlNifBinary key_bin, ivec_bin, data_bin;
-    AES_KEY aes_key;
-    unsigned char ivec[32];
-    int i;
-    unsigned char* ret_ptr;
-    ERL_NIF_TERM ret;
-
-    CHECK_NO_FIPS_MODE();
-
-    if (!enif_inspect_iolist_as_binary(env, argv[0], &key_bin)
-       || (key_bin.size != 16 && key_bin.size != 32)
-       || !enif_inspect_binary(env, argv[1], &ivec_bin)
-       || ivec_bin.size != 32
-       || !enif_inspect_iolist_as_binary(env, argv[2], &data_bin)
-       || data_bin.size % 16 != 0) {
-
-       return enif_make_badarg(env);
-    }
-
-    if (argv[3] == atom_true) {
-       i = AES_ENCRYPT;
-       AES_set_encrypt_key(key_bin.data, key_bin.size*8, &aes_key);
-    }
-    else {
-       i = AES_DECRYPT;
-       AES_set_decrypt_key(key_bin.data, key_bin.size*8, &aes_key);
-    }
-
-    ret_ptr = enif_make_new_binary(env, data_bin.size, &ret);
-    memcpy(ivec, ivec_bin.data, 32); /* writable copy */
-    AES_ige_encrypt(data_bin.data, ret_ptr, data_bin.size, &aes_key, ivec, i);
-    CONSUME_REDS(env,data_bin);
-    return ret;
-#else
-    return atom_notsup;
-#endif
-}
-
-
-/* Initializes state for ctr streaming (de)encryption
-*/
-#ifdef HAVE_EVP_AES_CTR
-static ERL_NIF_TERM aes_ctr_stream_init(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Key, IVec) */
-    ErlNifBinary     key_bin, ivec_bin;
-    struct evp_cipher_ctx *ctx;
-    const EVP_CIPHER *cipher;
-    ERL_NIF_TERM     ret;
-
-    if (!enif_inspect_iolist_as_binary(env, argv[0], &key_bin)
-        || !enif_inspect_binary(env, argv[1], &ivec_bin)
-        || ivec_bin.size != 16) {
-        return enif_make_badarg(env);
-    }
-
-    switch (key_bin.size)
-    {
-    case 16: cipher = EVP_aes_128_ctr(); break;
-    case 24: cipher = EVP_aes_192_ctr(); break;
-    case 32: cipher = EVP_aes_256_ctr(); break;
-    default: return enif_make_badarg(env);
-    }
-
-    ctx = enif_alloc_resource(evp_cipher_ctx_rtype, sizeof(struct evp_cipher_ctx));
-    ctx->ctx = EVP_CIPHER_CTX_new();
-    EVP_CipherInit_ex(ctx->ctx, cipher, NULL,
-                      key_bin.data, ivec_bin.data, 1);
-    EVP_CIPHER_CTX_set_padding(ctx->ctx, 0);
-    ret = enif_make_resource(env, ctx);
-    enif_release_resource(ctx);
-    return ret;
-}
-static ERL_NIF_TERM aes_ctr_stream_encrypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Context, Data) */
-    struct evp_cipher_ctx *ctx, *new_ctx;
-    ErlNifBinary   data_bin;
-    ERL_NIF_TERM   ret, cipher_term;
-    unsigned char  *out;
-    int            outl = 0;
-
-    if (!enif_get_resource(env, argv[0], evp_cipher_ctx_rtype, (void**)&ctx)
-        || !enif_inspect_iolist_as_binary(env, argv[1], &data_bin)) {
-        return enif_make_badarg(env);
-    }
-    new_ctx = enif_alloc_resource(evp_cipher_ctx_rtype, sizeof(struct evp_cipher_ctx));
-    new_ctx->ctx = EVP_CIPHER_CTX_new();
-    EVP_CIPHER_CTX_copy(new_ctx->ctx, ctx->ctx);
-    out = enif_make_new_binary(env, data_bin.size, &cipher_term);
-    EVP_CipherUpdate(new_ctx->ctx, out, &outl, data_bin.data, data_bin.size);
-    ASSERT(outl == data_bin.size);
-
-    ret = enif_make_tuple2(env, enif_make_resource(env, new_ctx), cipher_term);
-    enif_release_resource(new_ctx);
-    CONSUME_REDS(env,data_bin);
-    return ret;
-}
-
-#else /* if not HAVE_EVP_AES_CTR */
-
-static ERL_NIF_TERM aes_ctr_stream_init(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Key, IVec) */
-    ErlNifBinary key_bin, ivec_bin;
-    ERL_NIF_TERM ecount_bin;
-
-    if (!enif_inspect_iolist_as_binary(env, argv[0], &key_bin)
-        || !enif_inspect_binary(env, argv[1], &ivec_bin)
-        || !(key_bin.size == 16 || key_bin.size == 24 || key_bin.size ==32)
-        || ivec_bin.size != 16) {
-        return enif_make_badarg(env);
-    }
-
-    memset(enif_make_new_binary(env, AES_BLOCK_SIZE, &ecount_bin),
-           0, AES_BLOCK_SIZE);
-    return enif_make_tuple4(env, argv[0], argv[1], ecount_bin, enif_make_int(env, 0));
-}
-
-static ERL_NIF_TERM aes_ctr_stream_encrypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* ({Key, IVec, ECount, Num}, Data) */
-    ErlNifBinary key_bin, ivec_bin, text_bin, ecount_bin;
-    AES_KEY aes_key;
-    unsigned int num;
-    ERL_NIF_TERM ret, num2_term, cipher_term, ivec2_term, ecount2_term, new_state_term;
-    int state_arity;
-    const ERL_NIF_TERM *state_term;
-    unsigned char * ivec2_buf;
-    unsigned char * ecount2_buf;
-
-    if (!enif_get_tuple(env, argv[0], &state_arity, &state_term)
-        || state_arity != 4
-        || !enif_inspect_iolist_as_binary(env, state_term[0], &key_bin)
-        || AES_set_encrypt_key(key_bin.data, key_bin.size*8, &aes_key) != 0
-        || !enif_inspect_binary(env, state_term[1], &ivec_bin) || ivec_bin.size != 16
-        || !enif_inspect_binary(env, state_term[2], &ecount_bin) || ecount_bin.size != AES_BLOCK_SIZE
-        || !enif_get_uint(env, state_term[3], &num)
-        || !enif_inspect_iolist_as_binary(env, argv[1], &text_bin)) {
-        return enif_make_badarg(env);
-    }
-
-    ivec2_buf = enif_make_new_binary(env, ivec_bin.size, &ivec2_term);
-    ecount2_buf = enif_make_new_binary(env, ecount_bin.size, &ecount2_term);
-
-    memcpy(ivec2_buf, ivec_bin.data, 16);
-    memcpy(ecount2_buf, ecount_bin.data, ecount_bin.size);
-
-    AES_ctr128_encrypt((unsigned char *) text_bin.data,
-		       enif_make_new_binary(env, text_bin.size, &cipher_term),
-		       text_bin.size, &aes_key, ivec2_buf, ecount2_buf, &num);
-
-    num2_term = enif_make_uint(env, num);
-    new_state_term = enif_make_tuple4(env, state_term[0], ivec2_term, ecount2_term, num2_term);
-    ret = enif_make_tuple2(env, new_state_term, cipher_term);
-    CONSUME_REDS(env,text_bin);
-    return ret;
-}
-#endif /* !HAVE_EVP_AES_CTR */
-
-static ERL_NIF_TERM aead_encrypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Type,Key,Iv,AAD,In) */
-#if defined(HAVE_AEAD)
-    EVP_CIPHER_CTX *ctx;
-    const EVP_CIPHER *cipher = NULL;
-    ErlNifBinary key, iv, aad, in;
-    unsigned int tag_len;
-    unsigned char *outp, *tagp;
-    ERL_NIF_TERM type, out, out_tag;
-    int len, ctx_ctrl_set_ivlen, ctx_ctrl_get_tag;
-
-    type = argv[0];
-
-    if (!enif_is_atom(env, type)
-        || !enif_inspect_iolist_as_binary(env, argv[1], &key)
-	|| !enif_inspect_binary(env, argv[2], &iv)
-	|| !enif_inspect_iolist_as_binary(env, argv[3], &aad)
-	|| !enif_inspect_iolist_as_binary(env, argv[4], &in)
-	|| !enif_get_uint(env, argv[5], &tag_len)) {
-	return enif_make_badarg(env);
-    }
-
-    /* Use cipher_type some day.  Must check block_encrypt|decrypt first */
-#if defined(HAVE_GCM)
-    if (type == atom_aes_gcm) {
-        if ((iv.size > 0)
-            && (1 <= tag_len && tag_len <= 16)) {
-            ctx_ctrl_set_ivlen = EVP_CTRL_GCM_SET_IVLEN;
-            ctx_ctrl_get_tag = EVP_CTRL_GCM_GET_TAG;
-            if (key.size == 16)      cipher = EVP_aes_128_gcm();
-            else if (key.size == 24) cipher = EVP_aes_192_gcm();
-            else if (key.size == 32) cipher = EVP_aes_256_gcm();
-            else enif_make_badarg(env);
-        } else
-            enif_make_badarg(env);
-    } else
-#endif
-#if defined(HAVE_CCM)
-    if (type == atom_aes_ccm) {
-        if ((7 <= iv.size && iv.size <= 13)
-            && (4 <= tag_len && tag_len <= 16)
-            && ((tag_len & 1) == 0)
-            ) {
-            ctx_ctrl_set_ivlen = EVP_CTRL_CCM_SET_IVLEN;
-            ctx_ctrl_get_tag = EVP_CTRL_CCM_GET_TAG;
-            if (key.size == 16)      cipher = EVP_aes_128_ccm();
-            else if (key.size == 24) cipher = EVP_aes_192_ccm();
-            else if (key.size == 32) cipher = EVP_aes_256_ccm();
-            else enif_make_badarg(env);
-        } else
-            enif_make_badarg(env);
-    } else
-#endif
-#if defined(HAVE_CHACHA20_POLY1305)
-    if (type == atom_chacha20_poly1305) {
-        if ((key.size == 32)
-            && (1 <= iv.size && iv.size <= 16)
-            && (tag_len == 16)
-            ) {
-            ctx_ctrl_set_ivlen = EVP_CTRL_AEAD_SET_IVLEN;
-            ctx_ctrl_get_tag = EVP_CTRL_AEAD_GET_TAG,
-                cipher = EVP_chacha20_poly1305();
-        } else enif_make_badarg(env);
-    } else
-#endif
-        return enif_raise_exception(env, atom_notsup);
- 
-    ctx = EVP_CIPHER_CTX_new();
-    if (EVP_EncryptInit_ex(ctx, cipher, NULL, NULL, NULL) != 1) goto out_err;
-    if (EVP_CIPHER_CTX_ctrl(ctx, ctx_ctrl_set_ivlen, iv.size, NULL) != 1) goto out_err;
-
-#if defined(HAVE_CCM)
-    if (type == atom_aes_ccm) {
-        if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_CCM_SET_TAG, tag_len, NULL) != 1) goto out_err;
-        if (EVP_EncryptInit_ex(ctx, NULL, NULL, key.data, iv.data) != 1) goto out_err;
-        if (EVP_EncryptUpdate(ctx, NULL, &len, NULL, in.size) != 1) goto out_err;
-    } else
-#endif
-        if (EVP_EncryptInit_ex(ctx, NULL, NULL, key.data, iv.data) != 1) goto out_err;
-
-    if (EVP_EncryptUpdate(ctx, NULL, &len, aad.data, aad.size) != 1) goto out_err;
-
-    outp = enif_make_new_binary(env, in.size, &out);
-
-    if (EVP_EncryptUpdate(ctx, outp, &len, in.data, in.size) != 1) goto out_err;
-    if (EVP_EncryptFinal_ex(ctx, outp/*+len*/, &len) != 1) goto out_err;
-
-    tagp = enif_make_new_binary(env, tag_len, &out_tag);
-
-    if (EVP_CIPHER_CTX_ctrl(ctx, ctx_ctrl_get_tag, tag_len, tagp) != 1) goto out_err;
-
-    EVP_CIPHER_CTX_free(ctx);
-    CONSUME_REDS(env, in);
-    return enif_make_tuple2(env, out, out_tag);
-
-out_err: 
-    EVP_CIPHER_CTX_free(ctx);
-    return atom_error;
-
-#else
-    return enif_raise_exception(env, atom_notsup);
-#endif
-}
-
-static ERL_NIF_TERM aead_decrypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Type,Key,Iv,AAD,In,Tag) */
-#if defined(HAVE_AEAD)
-    EVP_CIPHER_CTX *ctx;
-    const EVP_CIPHER *cipher = NULL;
-    ErlNifBinary key, iv, aad, in, tag;
-    unsigned char *outp;
-    ERL_NIF_TERM type, out;
-    int len, ctx_ctrl_set_ivlen, ctx_ctrl_set_tag;
-
-    type = argv[0];
-#if defined(HAVE_GCM_EVP_DECRYPT_BUG)
-    if (type == atom_aes_gcm)
-        return aes_gcm_decrypt_NO_EVP(env, argc, argv);
-#endif
-
-    if (!enif_is_atom(env, type)
-        || !enif_inspect_iolist_as_binary(env, argv[1], &key)
-	|| !enif_inspect_binary(env, argv[2], &iv)
-	|| !enif_inspect_iolist_as_binary(env, argv[3], &aad)
-	|| !enif_inspect_iolist_as_binary(env, argv[4], &in)
-	|| !enif_inspect_iolist_as_binary(env, argv[5], &tag)) {
-	return enif_make_badarg(env);
-    }
-
-    /* Use cipher_type some day.  Must check block_encrypt|decrypt first */
-#if defined(HAVE_GCM)
-    if (type == atom_aes_gcm) {
-        if (iv.size > 0) {
-            ctx_ctrl_set_ivlen = EVP_CTRL_GCM_SET_IVLEN;
-            ctx_ctrl_set_tag = EVP_CTRL_GCM_SET_TAG;
-            if (key.size == 16)      cipher = EVP_aes_128_gcm();
-            else if (key.size == 24) cipher = EVP_aes_192_gcm();
-            else if (key.size == 32) cipher = EVP_aes_256_gcm();
-            else enif_make_badarg(env);
-        } else
-            enif_make_badarg(env);
-    } else
-#endif
-#if defined(HAVE_CCM)
-    if (type == atom_aes_ccm) {
-        if (iv.size > 0) {
-            ctx_ctrl_set_ivlen = EVP_CTRL_CCM_SET_IVLEN;
-            if (key.size == 16)      cipher = EVP_aes_128_ccm();
-            else if (key.size == 24) cipher = EVP_aes_192_ccm();
-            else if (key.size == 32) cipher = EVP_aes_256_ccm();
-            else enif_make_badarg(env);
-        } else
-            enif_make_badarg(env);
-    } else
-#endif
-#if defined(HAVE_CHACHA20_POLY1305)
-    if (type == atom_chacha20_poly1305) {
-        if ((key.size == 32)
-            && (1 <= iv.size && iv.size <= 16)
-            && tag.size == 16
-            ) {
-            ctx_ctrl_set_ivlen = EVP_CTRL_AEAD_SET_IVLEN;
-            ctx_ctrl_set_tag = EVP_CTRL_AEAD_SET_TAG;
-            cipher = EVP_chacha20_poly1305();
-        } else enif_make_badarg(env);
-    } else
-#endif
-        return enif_raise_exception(env, atom_notsup);
-
-    outp = enif_make_new_binary(env, in.size, &out);
-
-    ctx = EVP_CIPHER_CTX_new();
-    if (EVP_DecryptInit_ex(ctx, cipher, NULL, NULL, NULL) != 1) goto out_err;
-    if (EVP_CIPHER_CTX_ctrl(ctx,  ctx_ctrl_set_ivlen, iv.size, NULL) != 1) goto out_err;
-
-#if defined(HAVE_CCM)
-    if (type == atom_aes_ccm) {
-        if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_CCM_SET_TAG, tag.size, tag.data) != 1) goto out_err;
-    }
-#endif
-
-    if (EVP_DecryptInit_ex(ctx, NULL, NULL, key.data, iv.data) != 1) goto out_err;
-
-#if defined(HAVE_CCM)
-    if (type == atom_aes_ccm) {
-        if (1 != EVP_DecryptUpdate(ctx, NULL, &len, NULL, in.size)) goto out_err;
-    }
-#endif
-
-    if (EVP_DecryptUpdate(ctx, NULL, &len, aad.data, aad.size) != 1) goto out_err;
-    if (EVP_DecryptUpdate(ctx, outp, &len, in.data, in.size) != 1) goto out_err;
-
-#if defined(HAVE_GCM) || defined(HAVE_CHACHA20_POLY1305)
-    if (type == atom_aes_gcm) {
-         if (EVP_CIPHER_CTX_ctrl(ctx, ctx_ctrl_set_tag, tag.size, tag.data) != 1) goto out_err;
-         if (EVP_DecryptFinal_ex(ctx, outp+len, &len) != 1) goto out_err;
-    }
-#endif
-    EVP_CIPHER_CTX_free(ctx);
-
-    CONSUME_REDS(env, in);
-    return out;
-
-out_err:
-    EVP_CIPHER_CTX_free(ctx);
-    return atom_error;
-#else
-    return enif_raise_exception(env, atom_notsup);
-#endif
-}
-
-#ifdef HAVE_GCM_EVP_DECRYPT_BUG
-static ERL_NIF_TERM aes_gcm_decrypt_NO_EVP(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Type,Key,Iv,AAD,In,Tag) */
-    GCM128_CONTEXT *ctx;
-    ErlNifBinary key, iv, aad, in, tag;
-    AES_KEY aes_key;
-    unsigned char *outp;
-    ERL_NIF_TERM out;
-
-    if (!enif_inspect_iolist_as_binary(env, argv[1], &key)
-        || AES_set_encrypt_key(key.data, key.size*8, &aes_key) != 0
-        || !enif_inspect_binary(env, argv[2], &iv) || iv.size == 0
-        || !enif_inspect_iolist_as_binary(env, argv[3], &aad)
-        || !enif_inspect_iolist_as_binary(env, argv[4], &in)
-        || !enif_inspect_iolist_as_binary(env, argv[5], &tag)) {
-        return enif_make_badarg(env);
-    }
-
-    if (!(ctx = CRYPTO_gcm128_new(&aes_key, (block128_f)AES_encrypt)))
-        return atom_error;
-
-    CRYPTO_gcm128_setiv(ctx, iv.data, iv.size);
-
-    if (CRYPTO_gcm128_aad(ctx, aad.data, aad.size))
-        goto out_err;
-
-    outp = enif_make_new_binary(env, in.size, &out);
-
-    /* decrypt */
-    if (CRYPTO_gcm128_decrypt(ctx, in.data, outp, in.size))
-            goto out_err;
-
-    /* calculate and check the tag */
-    if (CRYPTO_gcm128_finish(ctx, tag.data, tag.size))
-            goto out_err;
-
-    CRYPTO_gcm128_release(ctx);
-    CONSUME_REDS(env, in);
-
-    return out;
-
-out_err:
-    CRYPTO_gcm128_release(ctx);
-    return atom_error;
-}
-#endif /* HAVE_GCM_EVP_DECRYPT_BUG */
-
-
-static ERL_NIF_TERM chacha20_stream_init(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Key, IV) */
-#if defined(HAVE_CHACHA20)
-    ErlNifBinary     key_bin, ivec_bin;
-    struct evp_cipher_ctx *ctx;
-    const EVP_CIPHER *cipher;
-    ERL_NIF_TERM     ret;
-
-    if (!enif_inspect_iolist_as_binary(env, argv[0], &key_bin)
-        || !enif_inspect_binary(env, argv[1], &ivec_bin)
-        || key_bin.size != 32
-        || ivec_bin.size != 16) {
-        return enif_make_badarg(env);
-    }
-
-    cipher = EVP_chacha20();
-
-    ctx = enif_alloc_resource(evp_cipher_ctx_rtype, sizeof(struct evp_cipher_ctx));
-    ctx->ctx = EVP_CIPHER_CTX_new();
-
-
-    EVP_CipherInit_ex(ctx->ctx, cipher, NULL,
-                      key_bin.data, ivec_bin.data, 1);
-    EVP_CIPHER_CTX_set_padding(ctx->ctx, 0);
-    ret = enif_make_resource(env, ctx);
-    enif_release_resource(ctx);
-    return ret;
-#else
-    return enif_raise_exception(env, atom_notsup);
-#endif
-};
-
-static ERL_NIF_TERM chacha20_stream_crypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (State, Data) */
-#if defined(HAVE_CHACHA20)
-    struct evp_cipher_ctx *ctx, *new_ctx;
-    ErlNifBinary   data_bin;
-    ERL_NIF_TERM   ret, cipher_term;
-    unsigned char  *out;
-    int            outl = 0;
-
-    if (!enif_get_resource(env, argv[0], evp_cipher_ctx_rtype, (void**)&ctx)
-        || !enif_inspect_iolist_as_binary(env, argv[1], &data_bin)) {
-        return enif_make_badarg(env);
-    }
-    new_ctx = enif_alloc_resource(evp_cipher_ctx_rtype, sizeof(struct evp_cipher_ctx));
-    new_ctx->ctx = EVP_CIPHER_CTX_new();
-    EVP_CIPHER_CTX_copy(new_ctx->ctx, ctx->ctx);
-    out = enif_make_new_binary(env, data_bin.size, &cipher_term);
-    EVP_CipherUpdate(new_ctx->ctx, out, &outl, data_bin.data, data_bin.size);
-    ASSERT(outl == data_bin.size);
-
-    ret = enif_make_tuple2(env, enif_make_resource(env, new_ctx), cipher_term);
-    enif_release_resource(new_ctx);
-    CONSUME_REDS(env,data_bin);
-    return ret;
-#else
-    return enif_raise_exception(env, atom_notsup);
-#endif
-};
-
-
-static ERL_NIF_TERM strong_rand_bytes_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Bytes) */
-    unsigned bytes;
-    unsigned char* data;
-    ERL_NIF_TERM ret;
-
-    if (!enif_get_uint(env, argv[0], &bytes)) {
-	return enif_make_badarg(env);
-    }
-    data = enif_make_new_binary(env, bytes, &ret);
-    if ( RAND_bytes(data, bytes) != 1) {
-        return atom_false;
-    }
-    ERL_VALGRIND_MAKE_MEM_DEFINED(data, bytes);
-    return ret;
-}
-
-
-static int get_bn_from_mpint(ErlNifEnv* env, ERL_NIF_TERM term, BIGNUM** bnp)
-{
-    ErlNifBinary bin;
-    int sz;
-    if (!enif_inspect_binary(env,term,&bin)) {
-	return 0;
-    }
-    ERL_VALGRIND_ASSERT_MEM_DEFINED(bin.data, bin.size);
-    sz = bin.size - 4;
-    if (sz < 0 || get_int32(bin.data) != sz) {
-	return 0;
-    }
-    *bnp = BN_bin2bn(bin.data+4, sz, NULL);
-    return 1;
-}
-
-static int get_bn_from_bin(ErlNifEnv* env, ERL_NIF_TERM term, BIGNUM** bnp)
-{
-    ErlNifBinary bin;
-    if (!enif_inspect_binary(env,term,&bin)) {
-	return 0;
-    }
-    ERL_VALGRIND_ASSERT_MEM_DEFINED(bin.data, bin.size);
-    *bnp = BN_bin2bn(bin.data, bin.size, NULL);
-    return 1;
-}
-
-static ERL_NIF_TERM bin_from_bn(ErlNifEnv* env, const BIGNUM *bn)
-{
-    int bn_len;
-    unsigned char *bin_ptr;
-    ERL_NIF_TERM term;
-
-    /* Copy the bignum into an erlang binary. */
-    bn_len = BN_num_bytes(bn);
-    bin_ptr = enif_make_new_binary(env, bn_len, &term);
-    BN_bn2bin(bn, bin_ptr);
-
-    return term;
-}
-
-static ERL_NIF_TERM strong_rand_range_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Range) */
-    BIGNUM *bn_range, *bn_rand;
-    ERL_NIF_TERM ret;
-
-    if(!get_bn_from_bin(env, argv[0], &bn_range)) {
-        return enif_make_badarg(env);
-    }
-
-    bn_rand = BN_new();
-    if (BN_rand_range(bn_rand, bn_range) != 1) {
-        ret = atom_false;
-    }
-    else {
-        ret = bin_from_bn(env, bn_rand);
-    }
-    BN_free(bn_rand);
-    BN_free(bn_range);
-    return ret;
-}
-
-static ERL_NIF_TERM rand_uniform_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Lo,Hi) */
-    BIGNUM *bn_from = NULL, *bn_to, *bn_rand;
-    unsigned char* data;
-    unsigned dlen;
-    ERL_NIF_TERM ret;
-
-    if (!get_bn_from_mpint(env, argv[0], &bn_from)
-	|| !get_bn_from_mpint(env, argv[1], &bn_rand)) {
-	if (bn_from) BN_free(bn_from);
-	return enif_make_badarg(env);
-    }
-
-    bn_to = BN_new();
-    BN_sub(bn_to, bn_rand, bn_from);
-    BN_pseudo_rand_range(bn_rand, bn_to);
-    BN_add(bn_rand, bn_rand, bn_from);
-    dlen = BN_num_bytes(bn_rand);
-    data = enif_make_new_binary(env, dlen+4, &ret);
-    put_int32(data, dlen);
-    BN_bn2bin(bn_rand, data+4);
-    ERL_VALGRIND_MAKE_MEM_DEFINED(data+4, dlen);
-    BN_free(bn_rand);
-    BN_free(bn_from);
-    BN_free(bn_to);
-    return ret;
-}
-
-static ERL_NIF_TERM mod_exp_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Base,Exponent,Modulo,bin_hdr) */
-    BIGNUM *bn_base=NULL, *bn_exponent=NULL, *bn_modulo=NULL, *bn_result;
-    BN_CTX *bn_ctx;
-    unsigned char* ptr;
-    unsigned dlen;
-    unsigned bin_hdr; /* return type: 0=plain binary, 4: mpint */
-    unsigned extra_byte;
-    ERL_NIF_TERM ret;
-
-    if (!get_bn_from_bin(env, argv[0], &bn_base)
-	|| !get_bn_from_bin(env, argv[1], &bn_exponent)
-	|| !get_bn_from_bin(env, argv[2], &bn_modulo)
-	|| !enif_get_uint(env,argv[3],&bin_hdr) || (bin_hdr & ~4)) {
-
-	if (bn_base) BN_free(bn_base);
-	if (bn_exponent) BN_free(bn_exponent);
-	if (bn_modulo) BN_free(bn_modulo);
-	return enif_make_badarg(env);
-    }
-    bn_result = BN_new();
-    bn_ctx = BN_CTX_new();
-    BN_mod_exp(bn_result, bn_base, bn_exponent, bn_modulo, bn_ctx);
-    dlen = BN_num_bytes(bn_result);
-    extra_byte = bin_hdr && BN_is_bit_set(bn_result, dlen*8-1);
-    ptr = enif_make_new_binary(env, bin_hdr+extra_byte+dlen, &ret);
-    if (bin_hdr) {
-	put_int32(ptr, extra_byte+dlen);
-	ptr[4] = 0; /* extra zeroed byte to ensure a positive mpint */
-	ptr += bin_hdr + extra_byte;
-    }
-    BN_bn2bin(bn_result, ptr);
-    BN_free(bn_result);
-    BN_CTX_free(bn_ctx);
-    BN_free(bn_modulo);
-    BN_free(bn_exponent);
-    BN_free(bn_base);
-    return ret;
-}
-
-static void init_digest_types(ErlNifEnv* env)
-{
-    struct digest_type_t* p = digest_types;
-
-    for (p = digest_types; p->type.str; p++) {
-	p->type.atom = enif_make_atom(env, p->type.str);
-	if (p->md.funcp)
-	    p->md.p = p->md.funcp();
-    }
-    p->type.atom = atom_false;  /* end marker */
-}
-
-static void init_cipher_types(ErlNifEnv* env)
-{
-    struct cipher_type_t* p = cipher_types;
-
-    for (p = cipher_types; p->type.str; p++) {
-	p->type.atom = enif_make_atom(env, p->type.str);
-	if (p->cipher.funcp)
-	    p->cipher.p = p->cipher.funcp();
-    }
-    p->type.atom = atom_false; /* end marker */
-}
-
-static struct digest_type_t* get_digest_type(ERL_NIF_TERM type)
-{
-    struct digest_type_t* p = NULL;
-    for (p = digest_types; p->type.atom != atom_false; p++) {
-	if (type == p->type.atom) {
-	    return p;
-	}
-    }
-    return NULL;
-}
-
-static struct cipher_type_t* get_cipher_type(ERL_NIF_TERM type, size_t key_len)
-{
-    struct cipher_type_t* p = NULL;
-    for (p = cipher_types; p->type.atom != atom_false; p++) {
-	if (type == p->type.atom && (!p->key_len || key_len == p->key_len)) {
-	    return p;
-	}
-    }
-    return NULL;
-}
-
-
-static ERL_NIF_TERM do_exor(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Data1, Data2) */
-    ErlNifBinary d1, d2;
-    unsigned char* ret_ptr;
-    int i;
-    ERL_NIF_TERM ret;
-
-    if (!enif_inspect_iolist_as_binary(env,argv[0], &d1)
-	|| !enif_inspect_iolist_as_binary(env,argv[1], &d2)
-	|| d1.size != d2.size) {
-	return enif_make_badarg(env);
-    }
-    ret_ptr = enif_make_new_binary(env, d1.size, &ret);
-
-    for (i=0; i<d1.size; i++) {
-	ret_ptr[i] = d1.data[i] ^ d2.data[i];
-    }
-    CONSUME_REDS(env,d1);
-    return ret;
-}
-
-static ERL_NIF_TERM rc4_set_key(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Key) */
-#ifndef OPENSSL_NO_RC4
-    ErlNifBinary key;
-    ERL_NIF_TERM ret;
-
-    CHECK_NO_FIPS_MODE();
-
-    if (!enif_inspect_iolist_as_binary(env,argv[0], &key)) {
-	return enif_make_badarg(env);
-    }
-    RC4_set_key((RC4_KEY*)enif_make_new_binary(env, sizeof(RC4_KEY), &ret),
-		key.size, key.data);
-    return ret;
-#else
-    return enif_raise_exception(env, atom_notsup);
-#endif
-}
-
-static ERL_NIF_TERM rc4_encrypt_with_state(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (State, Data) */
-#ifndef OPENSSL_NO_RC4
-    ErlNifBinary state, data;
-    RC4_KEY* rc4_key;
-    ERL_NIF_TERM new_state, new_data;
-
-    CHECK_NO_FIPS_MODE();
-
-    if (!enif_inspect_iolist_as_binary(env,argv[0], &state)
-	|| state.size != sizeof(RC4_KEY)
-	|| !enif_inspect_iolist_as_binary(env,argv[1], &data)) {
-	return enif_make_badarg(env);
-    }
-    rc4_key = (RC4_KEY*)enif_make_new_binary(env, sizeof(RC4_KEY), &new_state);
-    memcpy(rc4_key, state.data, sizeof(RC4_KEY));
-    RC4(rc4_key, data.size, data.data,
-	enif_make_new_binary(env, data.size, &new_data));
-    CONSUME_REDS(env,data);
-    return enif_make_tuple2(env,new_state,new_data);
-#else
-    return enif_raise_exception(env, atom_notsup);
-#endif
-}
-
-static int get_rsa_private_key(ErlNifEnv* env, ERL_NIF_TERM key, RSA *rsa)
-{
-    /* key=[E,N,D]|[E,N,D,P1,P2,E1,E2,C] */
-    ERL_NIF_TERM head, tail;
-    BIGNUM *e, *n, *d;
-    BIGNUM *p, *q;
-    BIGNUM *dmp1, *dmq1, *iqmp;
-
-    if (!enif_get_list_cell(env, key, &head, &tail)
-	|| !get_bn_from_bin(env, head, &e)
-	|| !enif_get_list_cell(env, tail, &head, &tail)
-	|| !get_bn_from_bin(env, head, &n)
-	|| !enif_get_list_cell(env, tail, &head, &tail)
-	|| !get_bn_from_bin(env, head, &d)) {
-	return 0;
-    }
-    (void) RSA_set0_key(rsa, n, e, d);
-    if (enif_is_empty_list(env, tail)) {
-	return 1;
-    }
-    if (!enif_get_list_cell(env, tail, &head, &tail)
-	|| !get_bn_from_bin(env, head, &p)
-	|| !enif_get_list_cell(env, tail, &head, &tail)
-	|| !get_bn_from_bin(env, head, &q)
-	|| !enif_get_list_cell(env, tail, &head, &tail)
-	|| !get_bn_from_bin(env, head, &dmp1)
-	|| !enif_get_list_cell(env, tail, &head, &tail)
-	|| !get_bn_from_bin(env, head, &dmq1)
-	|| !enif_get_list_cell(env, tail, &head, &tail)
-	|| !get_bn_from_bin(env, head, &iqmp)
-	|| !enif_is_empty_list(env, tail)) {
-	return 0;
-    }
-    (void) RSA_set0_factors(rsa, p, q);
-    (void) RSA_set0_crt_params(rsa, dmp1, dmq1, iqmp);
-    return 1;
-}
-
-
-static int get_rsa_public_key(ErlNifEnv* env, ERL_NIF_TERM key, RSA *rsa)
-{
-    /* key=[E,N] */
-    ERL_NIF_TERM head, tail;
-    BIGNUM *e, *n;
-
-    if (!enif_get_list_cell(env, key, &head, &tail)
-	|| !get_bn_from_bin(env, head, &e)
-	|| !enif_get_list_cell(env, tail, &head, &tail)
-	|| !get_bn_from_bin(env, head, &n)
-        || !enif_is_empty_list(env, tail)) {
-	return 0;
-    }
-
-    (void) RSA_set0_key(rsa, n, e, NULL);
-    return 1;
-}
-
-#ifdef HAVE_EDDSA
- static int get_eddsa_key(ErlNifEnv* env, int public, ERL_NIF_TERM key, EVP_PKEY **pkey)
-{
-    /* key=[K] */
-    ERL_NIF_TERM head, tail, tail2, algo;
-    ErlNifBinary bin;
-    int type;
-
-    if (!enif_get_list_cell(env, key, &head, &tail)
-	|| !enif_inspect_binary(env, head, &bin)
-        || !enif_get_list_cell(env, tail, &algo, &tail2)
-        || !enif_is_empty_list(env, tail2)) {
-	return 0;
-    }
-    if (algo == atom_ed25519) type = EVP_PKEY_ED25519;
-    else if (algo == atom_ed448) type = EVP_PKEY_ED448;
-    else
-        return 0;
-
-    if (public)
-        *pkey = EVP_PKEY_new_raw_public_key(type, NULL, bin.data, bin.size);
-    else 
-        *pkey = EVP_PKEY_new_raw_private_key(type, NULL, bin.data, bin.size);
-
-    if (!pkey)
-        return 0;
-    return 1;
-}
-#endif
-
-static int get_dss_private_key(ErlNifEnv* env, ERL_NIF_TERM key, DSA *dsa)
-{
-    /* key=[P,Q,G,KEY] */
-    ERL_NIF_TERM head, tail;
-    BIGNUM *dsa_p = NULL, *dsa_q = NULL, *dsa_g = NULL;
-    BIGNUM *dummy_pub_key, *priv_key = NULL;
-
-    if (!enif_get_list_cell(env, key, &head, &tail)
-	|| !get_bn_from_bin(env, head, &dsa_p)
-	|| !enif_get_list_cell(env, tail, &head, &tail)
-	|| !get_bn_from_bin(env, head, &dsa_q)
-	|| !enif_get_list_cell(env, tail, &head, &tail)
-	|| !get_bn_from_bin(env, head, &dsa_g)
-	|| !enif_get_list_cell(env, tail, &head, &tail)
-	|| !get_bn_from_bin(env, head, &priv_key)
-	|| !enif_is_empty_list(env,tail)) {
-	if (dsa_p) BN_free(dsa_p);
-	if (dsa_q) BN_free(dsa_q);
-	if (dsa_g) BN_free(dsa_g);
-	if (priv_key) BN_free(priv_key);
-	return 0;
-    }
-
-    /* Note: DSA_set0_key() does not allow setting only the
-     * private key, although DSA_sign() does not use the
-     * public key. Work around this limitation by setting
-     * the public key to a copy of the private key.
-     */
-    dummy_pub_key = BN_dup(priv_key);
-
-    DSA_set0_pqg(dsa, dsa_p, dsa_q, dsa_g);
-    DSA_set0_key(dsa, dummy_pub_key, priv_key);
-    return 1;
-}
-
-
-static int get_dss_public_key(ErlNifEnv* env, ERL_NIF_TERM key, DSA *dsa)
-{
-    /* key=[P, Q, G, Y] */
-    ERL_NIF_TERM head, tail;
-    BIGNUM *dsa_p = NULL, *dsa_q = NULL, *dsa_g = NULL, *dsa_y = NULL;
-
-    if (!enif_get_list_cell(env, key, &head, &tail)
-	|| !get_bn_from_bin(env, head, &dsa_p)
-	|| !enif_get_list_cell(env, tail, &head, &tail)
-	|| !get_bn_from_bin(env, head, &dsa_q)
-	|| !enif_get_list_cell(env, tail, &head, &tail)
-	|| !get_bn_from_bin(env, head, &dsa_g)
-	|| !enif_get_list_cell(env, tail, &head, &tail)
-	|| !get_bn_from_bin(env, head, &dsa_y)
-	|| !enif_is_empty_list(env,tail)) {
-	if (dsa_p) BN_free(dsa_p);
-	if (dsa_q) BN_free(dsa_q);
-	if (dsa_g) BN_free(dsa_g);
-	if (dsa_y) BN_free(dsa_y);
-	return 0;
-    }
-
-    DSA_set0_pqg(dsa, dsa_p, dsa_q, dsa_g);
-    DSA_set0_key(dsa, dsa_y, NULL);
-    return 1;
-}
-
-/* Creates a term which can be parsed by get_rsa_private_key(). This is a list of plain integer binaries (not mpints). */
-static ERL_NIF_TERM put_rsa_private_key(ErlNifEnv* env, const RSA *rsa)
-{
-    ERL_NIF_TERM result[8];
-    const BIGNUM *n, *e, *d, *p, *q, *dmp1, *dmq1, *iqmp;
-
-    /* Return at least [E,N,D] */
-    n = NULL; e = NULL; d = NULL;
-    RSA_get0_key(rsa, &n, &e, &d);
-
-    result[0] = bin_from_bn(env, e);  // Exponent E
-    result[1] = bin_from_bn(env, n);  // Modulus N = p*q
-    result[2] = bin_from_bn(env, d);  // Exponent D
-
-    /* Check whether the optional additional parameters are available */
-    p = NULL; q = NULL;
-    RSA_get0_factors(rsa, &p, &q);
-    dmp1 = NULL; dmq1 = NULL; iqmp = NULL;
-    RSA_get0_crt_params(rsa, &dmp1, &dmq1, &iqmp);
-
-    if (p && q && dmp1 && dmq1 && iqmp) {
-	result[3] = bin_from_bn(env, p);     // Factor p
-	result[4] = bin_from_bn(env, q);     // Factor q
-	result[5] = bin_from_bn(env, dmp1);  // D mod (p-1)
-	result[6] = bin_from_bn(env, dmq1);  // D mod (q-1)
-	result[7] = bin_from_bn(env, iqmp);  // (1/q) mod p
-
-	return enif_make_list_from_array(env, result, 8);
-    } else {
-	return enif_make_list_from_array(env, result, 3);
-    }
-}
-
-static int check_erlang_interrupt(int maj, int min, BN_GENCB *ctxt)
-{
-    ErlNifEnv *env = BN_GENCB_get_arg(ctxt);
-
-    if (!enif_is_current_process_alive(env)) {
-	return 0;
-    } else {
-	return 1;
-    }
-}
-
-static ERL_NIF_TERM rsa_generate_key(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (ModulusSize, PublicExponent) */
-    int modulus_bits;
-    BIGNUM *pub_exp, *three;
-    RSA *rsa;
-    int success;
-    ERL_NIF_TERM result;
-    BN_GENCB *intr_cb;
-#ifndef HAVE_OPAQUE_BN_GENCB
-    BN_GENCB intr_cb_buf;
-#endif
-
-    if (!enif_get_int(env, argv[0], &modulus_bits) || modulus_bits < 256) {
-	return enif_make_badarg(env);
-    }
-
-    if (!get_bn_from_bin(env, argv[1], &pub_exp)) {
-	return enif_make_badarg(env);
-    }
-
-    /* Make sure the public exponent is large enough (at least 3).
-     * Without this, RSA_generate_key_ex() can run forever. */
-    three = BN_new();
-    BN_set_word(three, 3);
-    success = BN_cmp(pub_exp, three);
-    BN_free(three);
-    if (success < 0) {
-	BN_free(pub_exp);
-	return enif_make_badarg(env);
-    }
-
-    /* For large keys, prime generation can take many seconds. Set up
-     * the callback which we use to test whether the process has been
-     * interrupted. */
-#ifdef HAVE_OPAQUE_BN_GENCB
-    intr_cb = BN_GENCB_new();
-#else
-    intr_cb = &intr_cb_buf;
-#endif
-    BN_GENCB_set(intr_cb, check_erlang_interrupt, env);
-
-    rsa = RSA_new();
-    success = RSA_generate_key_ex(rsa, modulus_bits, pub_exp, intr_cb);
-    BN_free(pub_exp);
-
-#ifdef HAVE_OPAQUE_BN_GENCB
-    BN_GENCB_free(intr_cb);
-#endif
-
-    if (!success) {
-        RSA_free(rsa);
-	return atom_error;
-    }
-
-    result = put_rsa_private_key(env, rsa);
-    RSA_free(rsa);
-
-    return result;
-}
-
-static ERL_NIF_TERM rsa_generate_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{
-    /* RSA key generation can take a long time (>1 sec for a large
-     * modulus), so schedule it as a CPU-bound operation. */
-    return enif_schedule_nif(env, "rsa_generate_key",
-			     ERL_NIF_DIRTY_JOB_CPU_BOUND,
-			     rsa_generate_key, argc, argv);
-}
-
-static ERL_NIF_TERM dh_generate_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (PrivKey|undefined, DHParams=[P,G], Mpint, Len|0) */
-    DH *dh_params = NULL;
-    int mpint; /* 0 or 4 */
-
-    {
-        ERL_NIF_TERM head, tail;
-        BIGNUM
-            *dh_p = NULL,
-            *dh_g = NULL,
-            *priv_key_in = NULL;
-        unsigned long
-            len = 0;
-
-        if (!(get_bn_from_bin(env, argv[0], &priv_key_in)
-              || argv[0] == atom_undefined)
-            || !enif_get_list_cell(env, argv[1], &head, &tail)
-            || !get_bn_from_bin(env, head, &dh_p)
-            || !enif_get_list_cell(env, tail, &head, &tail)
-            || !get_bn_from_bin(env, head, &dh_g)
-            || !enif_is_empty_list(env, tail)
-            || !enif_get_int(env, argv[2], &mpint) || (mpint & ~4)
-            || !enif_get_ulong(env, argv[3], &len)
-
-            /* Load dh_params with values to use by the generator.
-               Mem mgmnt transfered from dh_p etc to dh_params */
-            || !(dh_params = DH_new())
-            || (priv_key_in && !DH_set0_key(dh_params, NULL, priv_key_in))
-            || !DH_set0_pqg(dh_params, dh_p, NULL, dh_g)
-            ) {
-            if (priv_key_in) BN_free(priv_key_in);
-            if (dh_p) BN_free(dh_p);
-            if (dh_g) BN_free(dh_g);
-            if (dh_params) DH_free(dh_params);
-            return enif_make_badarg(env);
-        }
-
-        if (len) {
-            if (len < BN_num_bits(dh_p))
-                DH_set_length(dh_params, len);
-            else {
-                if (priv_key_in) BN_free(priv_key_in);
-                if (dh_p) BN_free(dh_p);
-                if (dh_g) BN_free(dh_g);
-                if (dh_params) DH_free(dh_params);
-                return enif_make_badarg(env);
-            }
-        }
-    }
-
-#ifdef HAS_EVP_PKEY_CTX
-    {
-        EVP_PKEY_CTX *ctx;
-        EVP_PKEY *dhkey, *params;
-        int success;
-
-        params = EVP_PKEY_new();
-        success = EVP_PKEY_set1_DH(params, dh_params);   /* set the key referenced by params to dh_params... */
-        DH_free(dh_params);                              /* ...dh_params (and params) must be freed */
-        if (!success) return atom_error;
-
-        ctx = EVP_PKEY_CTX_new(params, NULL);
-        EVP_PKEY_free(params);
-        if (!ctx) {
-            return atom_error;
-        }
-
-        if (!EVP_PKEY_keygen_init(ctx)) {
-            /* EVP_PKEY_CTX_free(ctx); */
-            return atom_error;
-        }
-
-        dhkey = EVP_PKEY_new();
-        if (!EVP_PKEY_keygen(ctx, &dhkey)) {         /* "performs a key generation operation, the ... */
-                                                     /*... generated key is written to ppkey." (=last arg) */
-             /* EVP_PKEY_CTX_free(ctx); */
-             /* EVP_PKEY_free(dhkey); */
-             return atom_error;
-        }
-
-        dh_params = EVP_PKEY_get1_DH(dhkey); /* return the referenced key. dh_params and dhkey must be freed */
-        EVP_PKEY_free(dhkey);
-        if (!dh_params) {
-            /* EVP_PKEY_CTX_free(ctx); */
-            return atom_error;
-        }
-        EVP_PKEY_CTX_free(ctx);
-    }
-#else
-    if (!DH_generate_key(dh_params)) return atom_error;
-#endif
-    {
-        unsigned char *pub_ptr, *prv_ptr;
-        int pub_len, prv_len;
-        ERL_NIF_TERM ret_pub, ret_prv;
-        const BIGNUM *pub_key_gen, *priv_key_gen;
-
-        DH_get0_key(dh_params,
-                    &pub_key_gen, &priv_key_gen); /* Get pub_key_gen and priv_key_gen.
-                                                     "The values point to the internal representation of
-                                                     the public key and private key values. This memory
-                                                     should not be freed directly." says man */
-        pub_len = BN_num_bytes(pub_key_gen);
-        prv_len = BN_num_bytes(priv_key_gen);
-        pub_ptr = enif_make_new_binary(env, pub_len+mpint, &ret_pub);
-        prv_ptr = enif_make_new_binary(env, prv_len+mpint, &ret_prv);
-        if (mpint) {
-            put_int32(pub_ptr, pub_len); pub_ptr += 4;
-            put_int32(prv_ptr, prv_len); prv_ptr += 4;
-        }
-        BN_bn2bin(pub_key_gen, pub_ptr);
-        BN_bn2bin(priv_key_gen, prv_ptr);
-        ERL_VALGRIND_MAKE_MEM_DEFINED(pub_ptr, pub_len);
-        ERL_VALGRIND_MAKE_MEM_DEFINED(prv_ptr, prv_len);
-
-        DH_free(dh_params);
-
-        return enif_make_tuple2(env, ret_pub, ret_prv);
-    }
-}
-
-static ERL_NIF_TERM dh_compute_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (OthersPublicKey, MyPrivateKey, DHParams=[P,G]) */
-    BIGNUM *other_pub_key = NULL,
-        *dh_p = NULL,
-        *dh_g = NULL;
-    DH *dh_priv = DH_new();
-
-    /* Check the arguments and get
-          my private key (dh_priv),
-          the peer's public key (other_pub_key),
-          the parameters p & q
-    */
-
-    {
-        BIGNUM *dummy_pub_key = NULL,
-               *priv_key = NULL;
-        ERL_NIF_TERM head, tail;
-
-        if (!get_bn_from_bin(env, argv[0], &other_pub_key)
-            || !get_bn_from_bin(env, argv[1], &priv_key)
-            || !enif_get_list_cell(env, argv[2], &head, &tail)
-            || !get_bn_from_bin(env, head, &dh_p)
-            || !enif_get_list_cell(env, tail, &head, &tail)
-            || !get_bn_from_bin(env, head, &dh_g)
-            || !enif_is_empty_list(env, tail)
-
-            /* Note: DH_set0_key() does not allow setting only the
-             * private key, although DH_compute_key() does not use the
-             * public key. Work around this limitation by setting
-             * the public key to a copy of the private key.
-             */
-            || !(dummy_pub_key = BN_dup(priv_key))
-            || !DH_set0_key(dh_priv, dummy_pub_key, priv_key)
-            || !DH_set0_pqg(dh_priv, dh_p, NULL, dh_g)
-            ) {
-            if (dh_p) BN_free(dh_p);
-            if (dh_g) BN_free(dh_g);
-            if (other_pub_key) BN_free(other_pub_key);
-            if (dummy_pub_key) BN_free(dummy_pub_key);
-            if (priv_key) BN_free(priv_key);
-            return enif_make_badarg(env);
-        }
-    }
-    {
-        ErlNifBinary ret_bin;
-        int size;
-
-        enif_alloc_binary(DH_size(dh_priv), &ret_bin);
-        size = DH_compute_key(ret_bin.data, other_pub_key, dh_priv);
-        BN_free(other_pub_key);
-        DH_free(dh_priv);
-        if (size<=0) {
-            enif_release_binary(&ret_bin);
-            return atom_error;
-        }
-
-        if (size != ret_bin.size) enif_realloc_binary(&ret_bin, size);
-        return enif_make_binary(env, &ret_bin);
-    }
-}
-
-
-static ERL_NIF_TERM srp_value_B_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Multiplier, Verifier, Generator, Exponent, Prime) */
-    BIGNUM *bn_verifier = NULL;
-    BIGNUM *bn_exponent = NULL, *bn_generator = NULL, *bn_prime = NULL, *bn_multiplier = NULL, *bn_result;
-    BN_CTX *bn_ctx;
-    unsigned char* ptr;
-    unsigned dlen;
-    ERL_NIF_TERM ret;
-
-    CHECK_NO_FIPS_MODE();
-
-    if (!get_bn_from_bin(env, argv[0], &bn_multiplier)
-	|| !get_bn_from_bin(env, argv[1], &bn_verifier)
-	|| !get_bn_from_bin(env, argv[2], &bn_generator)
-	|| !get_bn_from_bin(env, argv[3], &bn_exponent)
-	|| !get_bn_from_bin(env, argv[4], &bn_prime)) {
-	if (bn_multiplier) BN_free(bn_multiplier);
-	if (bn_verifier) BN_free(bn_verifier);
-	if (bn_generator) BN_free(bn_generator);
-	if (bn_exponent) BN_free(bn_exponent);
-	if (bn_prime) BN_free(bn_prime);
-	return enif_make_badarg(env);
-    }
-
-    bn_result = BN_new();
-    bn_ctx = BN_CTX_new();
-
-    /* B = k*v + g^b % N */
-
-    /* k * v */
-    BN_mod_mul(bn_multiplier, bn_multiplier, bn_verifier, bn_prime, bn_ctx);
-
-    /* g^b % N */
-    BN_mod_exp(bn_result, bn_generator, bn_exponent, bn_prime, bn_ctx);
-
-    /* k*v + g^b % N */
-    BN_mod_add(bn_result, bn_result, bn_multiplier, bn_prime, bn_ctx);
-
-    /* check that B % N != 0, reuse bn_multiplier */
-    BN_nnmod(bn_multiplier, bn_result, bn_prime, bn_ctx);
-    if (BN_is_zero(bn_multiplier)) {
-	ret = atom_error;
-    } else {
-	dlen = BN_num_bytes(bn_result);
-	ptr = enif_make_new_binary(env, dlen, &ret);
-	BN_bn2bin(bn_result, ptr);
-    }
-    BN_free(bn_result);
-    BN_CTX_free(bn_ctx);
-    BN_free(bn_prime);
-    BN_free(bn_generator);
-    BN_free(bn_multiplier);
-    BN_free(bn_exponent);
-    BN_free(bn_verifier);
-    return ret;
-}
-
-static ERL_NIF_TERM srp_user_secret_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (a, u, B, Multiplier, Prime, Exponent, Generator) */
-/*
-        <premaster secret> = (B - (k * g^x)) ^ (a + (u * x)) % N
-*/
-    BIGNUM *bn_exponent = NULL, *bn_a = NULL;
-    BIGNUM *bn_u = NULL, *bn_multiplier = NULL, *bn_exp2,
-        *bn_base, *bn_prime = NULL, *bn_generator = NULL,
-        *bn_B = NULL, *bn_result;
-    BN_CTX *bn_ctx;
-    unsigned char* ptr;
-    unsigned dlen;
-    ERL_NIF_TERM ret;
-
-    CHECK_NO_FIPS_MODE();
-
-    if (!get_bn_from_bin(env, argv[0], &bn_a)
-	|| !get_bn_from_bin(env, argv[1], &bn_u)
-	|| !get_bn_from_bin(env, argv[2], &bn_B)
-	|| !get_bn_from_bin(env, argv[3], &bn_multiplier)
-	|| !get_bn_from_bin(env, argv[4], &bn_generator)
-	|| !get_bn_from_bin(env, argv[5], &bn_exponent)
-	|| !get_bn_from_bin(env, argv[6], &bn_prime))
-    {
-	if (bn_exponent) BN_free(bn_exponent);
-	if (bn_a) BN_free(bn_a);
-	if (bn_u) BN_free(bn_u);
-	if (bn_B) BN_free(bn_B);
-	if (bn_multiplier) BN_free(bn_multiplier);
-	if (bn_generator) BN_free(bn_generator);
-	if (bn_prime) BN_free(bn_prime);
-	return enif_make_badarg(env);
-    }
-
-    bn_ctx = BN_CTX_new();
-    bn_result = BN_new();
-
-    /* check that B % N != 0 */
-    BN_nnmod(bn_result, bn_B, bn_prime, bn_ctx);
-    if (BN_is_zero(bn_result)) {
-	BN_free(bn_exponent);
-	BN_free(bn_a);
-	BN_free(bn_generator);
-	BN_free(bn_prime);
-	BN_free(bn_u);
-	BN_free(bn_B);
-	BN_CTX_free(bn_ctx);
-
-	return atom_error;
-    }
-
-    /* (B - (k * g^x)) */
-    bn_base = BN_new();
-    BN_mod_exp(bn_result, bn_generator, bn_exponent, bn_prime, bn_ctx);
-    BN_mod_mul(bn_result, bn_multiplier, bn_result, bn_prime, bn_ctx);
-    BN_mod_sub(bn_base, bn_B, bn_result, bn_prime, bn_ctx);
-
-    /* a + (u * x) */
-    bn_exp2 = BN_new();
-    BN_mul(bn_result, bn_u, bn_exponent, bn_ctx);
-    BN_add(bn_exp2, bn_a, bn_result);
-
-    /* (B - (k * g^x)) ^ (a + (u * x)) % N */
-    BN_mod_exp(bn_result, bn_base, bn_exp2, bn_prime, bn_ctx);
-
-    dlen = BN_num_bytes(bn_result);
-    ptr = enif_make_new_binary(env, dlen, &ret);
-    BN_bn2bin(bn_result, ptr);
-    BN_free(bn_result);
-    BN_CTX_free(bn_ctx);
-
-    BN_free(bn_multiplier);
-    BN_free(bn_exp2);
-    BN_free(bn_u);
-    BN_free(bn_exponent);
-    BN_free(bn_a);
-    BN_free(bn_B);
-    BN_free(bn_base);
-    BN_free(bn_generator);
-    BN_free(bn_prime);
-    return ret;
-}
-
-static ERL_NIF_TERM srp_host_secret_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Verifier, b, u, A, Prime) */
-/*
-        <premaster secret> = (A * v^u) ^ b % N
-*/
-    BIGNUM *bn_b = NULL, *bn_verifier = NULL;
-    BIGNUM *bn_prime = NULL, *bn_A = NULL, *bn_u = NULL, *bn_base, *bn_result;
-    BN_CTX *bn_ctx;
-    unsigned char* ptr;
-    unsigned dlen;
-    ERL_NIF_TERM ret;
-
-    CHECK_NO_FIPS_MODE();
-
-    if (!get_bn_from_bin(env, argv[0], &bn_verifier)
-	|| !get_bn_from_bin(env, argv[1], &bn_b)
-	|| !get_bn_from_bin(env, argv[2], &bn_u)
-	|| !get_bn_from_bin(env, argv[3], &bn_A)
-	|| !get_bn_from_bin(env, argv[4], &bn_prime))
-    {
-	if (bn_verifier) BN_free(bn_verifier);
-	if (bn_b) BN_free(bn_b);
-	if (bn_u) BN_free(bn_u);
-	if (bn_A) BN_free(bn_A);
-	if (bn_prime) BN_free(bn_prime);
-	return enif_make_badarg(env);
-    }
-
-    bn_ctx = BN_CTX_new();
-    bn_result = BN_new();
-
-    /* check that A % N != 0 */
-    BN_nnmod(bn_result, bn_A, bn_prime, bn_ctx);
-    if (BN_is_zero(bn_result)) {
-	BN_free(bn_b);
-	BN_free(bn_verifier);
-	BN_free(bn_prime);
-	BN_free(bn_A);
-	BN_CTX_free(bn_ctx);
-
-	return atom_error;
-    }
-
-    /* (A * v^u) */
-    bn_base = BN_new();
-    BN_mod_exp(bn_base, bn_verifier, bn_u, bn_prime, bn_ctx);
-    BN_mod_mul(bn_base, bn_A, bn_base, bn_prime, bn_ctx);
-
-    /* (A * v^u) ^ b % N */
-    BN_mod_exp(bn_result, bn_base, bn_b, bn_prime, bn_ctx);
-
-    dlen = BN_num_bytes(bn_result);
-    ptr = enif_make_new_binary(env, dlen, &ret);
-    BN_bn2bin(bn_result, ptr);
-    BN_free(bn_result);
-    BN_CTX_free(bn_ctx);
-
-    BN_free(bn_u);
-    BN_free(bn_base);
-    BN_free(bn_verifier);
-    BN_free(bn_prime);
-    BN_free(bn_A);
-    BN_free(bn_b);
-    return ret;
-}
-
-#if defined(HAVE_EC)
-static EC_KEY* ec_key_new(ErlNifEnv* env, ERL_NIF_TERM curve_arg)
-{
-    EC_KEY *key = NULL;
-    int c_arity = -1;
-    const ERL_NIF_TERM* curve;
-    ErlNifBinary seed;
-    BIGNUM *p = NULL;
-    BIGNUM *a = NULL;
-    BIGNUM *b = NULL;
-    BIGNUM *bn_order = NULL;
-    BIGNUM *cofactor = NULL;
-    EC_GROUP *group = NULL;
-    EC_POINT *point = NULL;
-
-    /* {Field, Prime, Point, Order, CoFactor} = Curve */
-    if (enif_get_tuple(env,curve_arg,&c_arity,&curve)
-	&& c_arity == 5
-	&& get_bn_from_bin(env, curve[3], &bn_order)
-	&& (curve[4] != atom_none && get_bn_from_bin(env, curve[4], &cofactor))) {
-
-	int f_arity = -1;
-	const ERL_NIF_TERM* field;
-	int p_arity = -1;
-	const ERL_NIF_TERM* prime;
-
-	long field_bits;
-
-	/* {A, B, Seed} = Prime */
-	if (!enif_get_tuple(env,curve[1],&p_arity,&prime)
-	    || !get_bn_from_bin(env, prime[0], &a)
-	    || !get_bn_from_bin(env, prime[1], &b))
-	    goto out_err;
-
-	if (!enif_get_tuple(env,curve[0],&f_arity,&field))
-	    goto out_err;
-
-	if (f_arity == 2 && field[0] == atom_prime_field) {
-	    /* {prime_field, Prime} */
-
-	    if (!get_bn_from_bin(env, field[1], &p))
-		goto out_err;
-
-	    if (BN_is_negative(p) || BN_is_zero(p))
-		goto out_err;
-
-	    field_bits = BN_num_bits(p);
-	    if (field_bits > OPENSSL_ECC_MAX_FIELD_BITS)
-		goto out_err;
-
-	    /* create the EC_GROUP structure */
-	    group = EC_GROUP_new_curve_GFp(p, a, b, NULL);
-
-	} else if (f_arity == 3 && field[0] == atom_characteristic_two_field) {
-#if defined(OPENSSL_NO_EC2M)
-	    enif_raise_exception(env, atom_notsup);
-	    goto out_err;
-#else
-	    /* {characteristic_two_field, M, Basis} */
-
-	    int b_arity = -1;
-	    const ERL_NIF_TERM* basis;
-	    unsigned int k1, k2, k3;
-
-	    if ((p = BN_new()) == NULL)
-		goto out_err;
-
-	    if (!enif_get_long(env, field[1], &field_bits)
-		|| field_bits > OPENSSL_ECC_MAX_FIELD_BITS)
-		goto out_err;
-
-	    if (enif_get_tuple(env,field[2],&b_arity,&basis)) {
-		if (b_arity == 2
-		    && basis[0] == atom_tpbasis
-		    && enif_get_uint(env, basis[1], &k1)) {
-		    /* {tpbasis, k} = Basis */
-
-		    if (!(field_bits > k1 && k1 > 0))
-			goto out_err;
-
-		    /* create the polynomial */
-		    if (!BN_set_bit(p, (int)field_bits)
-                        || !BN_set_bit(p, (int)k1)
-                        || !BN_set_bit(p, 0))
-                                goto out_err;
-
-		} else if (b_arity == 4
-		    && basis[0] == atom_ppbasis
-		    && enif_get_uint(env, basis[1], &k1)
-		    && enif_get_uint(env, basis[2], &k2)
-		    && enif_get_uint(env, basis[3], &k3)) {
-		    /* {ppbasis, k1, k2, k3} = Basis */
-
-		    if (!(field_bits > k3 && k3 > k2 && k2 > k1 && k1 > 0))
-			goto out_err;
-
-		    /* create the polynomial */
-		    if (!BN_set_bit(p, (int)field_bits)
-			|| !BN_set_bit(p, (int)k1)
-			|| !BN_set_bit(p, (int)k2)
-			|| !BN_set_bit(p, (int)k3)
-			|| !BN_set_bit(p, 0))
-			goto out_err;
-
-		} else
-		    goto out_err;
-	    } else if (field[2] == atom_onbasis) {
-		/* onbasis = Basis */
-		/* no parameters */
-		goto out_err;
-
-	    } else
-		goto out_err;
-
-	    group = EC_GROUP_new_curve_GF2m(p, a, b, NULL);
-#endif
-	} else
-	    goto out_err;
-
-        if (!group)
-            goto out_err;
-
-	if (enif_inspect_binary(env, prime[2], &seed)) {
-	    EC_GROUP_set_seed(group, seed.data, seed.size);
-	}
-
-	if (!term2point(env, curve[2], group, &point))
-	    goto out_err;
-
-	if (BN_is_negative(bn_order)
-	    || BN_is_zero(bn_order)
-	    || BN_num_bits(bn_order) > (int)field_bits + 1)
-	    goto out_err;
-
-	if (!EC_GROUP_set_generator(group, point, bn_order, cofactor))
-	    goto out_err;
-
-	EC_GROUP_set_asn1_flag(group, 0x0);
-
-	key = EC_KEY_new();
-	if (!key)
-	    goto out_err;
-	EC_KEY_set_group(key, group);
-    }
-    else {
-	goto out_err;
-    }
-
-
-    goto out;
-
-out_err:
-    if (key) EC_KEY_free(key);
-    key = NULL;
-
-out:
-    /* some OpenSSL structures are mem-dup'ed into the key,
-       so we have to free our copies here */
-    if (p) BN_free(p);
-    if (a) BN_free(a);
-    if (b) BN_free(b);
-    if (bn_order) BN_free(bn_order);
-    if (cofactor) BN_free(cofactor);
-    if (group) EC_GROUP_free(group);
-    if (point) EC_POINT_free(point);
-
-    return key;
-}
-
-
-static ERL_NIF_TERM bn2term(ErlNifEnv* env, const BIGNUM *bn)
-{
-    unsigned dlen;
-    unsigned char* ptr;
-    ERL_NIF_TERM ret;
-
-    if (!bn)
-	    return atom_undefined;
-
-    dlen = BN_num_bytes(bn);
-    ptr = enif_make_new_binary(env, dlen, &ret);
-    BN_bn2bin(bn, ptr);
-    ERL_VALGRIND_MAKE_MEM_DEFINED(ptr, dlen);
-    return ret;
-}
-
-static ERL_NIF_TERM point2term(ErlNifEnv* env,
-			       const EC_GROUP *group,
-			       const EC_POINT *point,
-			       point_conversion_form_t form)
-{
-    unsigned dlen;
-    ErlNifBinary bin;
-
-    dlen = EC_POINT_point2oct(group, point, form, NULL, 0, NULL);
-    if (dlen == 0)
-	return atom_undefined;
-
-    if (!enif_alloc_binary(dlen, &bin))
-	return enif_make_badarg(env);
-
-    if (!EC_POINT_point2oct(group, point, form, bin.data, bin.size, NULL)) {
-	enif_release_binary(&bin);
-	return enif_make_badarg(env);
-    }
-    ERL_VALGRIND_MAKE_MEM_DEFINED(bin.data, bin.size);
-    return enif_make_binary(env, &bin);
-}
-
-static int term2point(ErlNifEnv* env, ERL_NIF_TERM term,
-		      EC_GROUP *group, EC_POINT **pptr)
-{
-    int ret = 0;
-    ErlNifBinary bin;
-    EC_POINT *point;
-
-    if (!enif_inspect_binary(env,term,&bin)) {
-        return 0;
-    }
-
-    if ((*pptr = point = EC_POINT_new(group)) == NULL) {
-	return 0;
-    }
-
-    /* set the point conversion form */
-    EC_GROUP_set_point_conversion_form(group, (point_conversion_form_t)(bin.data[0] & ~0x01));
-
-    /* extract the ec point */
-    if (!EC_POINT_oct2point(group, point, bin.data, bin.size, NULL)) {
-	EC_POINT_free(point);
-	*pptr = NULL;
-    } else
-	ret = 1;
-
-    return ret;
-}
-
-static int get_ec_key(ErlNifEnv* env,
-		      ERL_NIF_TERM curve, ERL_NIF_TERM priv, ERL_NIF_TERM pub,
-		      EC_KEY** res)
-{
-    EC_KEY *key = NULL;
-    BIGNUM *priv_key = NULL;
-    EC_POINT *pub_key = NULL;
-    EC_GROUP *group = NULL;
-
-    if (!(priv == atom_undefined || get_bn_from_bin(env, priv, &priv_key))
-	|| !(pub == atom_undefined || enif_is_binary(env, pub))) {
-	goto out_err;
-    }
-
-    key = ec_key_new(env, curve);
-
-    if (!key) {
-	goto out_err;
-    }
-
-    if (!group)
-	group = EC_GROUP_dup(EC_KEY_get0_group(key));
-
-    if (term2point(env, pub, group, &pub_key)) {
-	    if (!EC_KEY_set_public_key(key, pub_key)) {
-		    goto out_err;
-	    }
-    }
-    if (priv != atom_undefined
-	&& !BN_is_zero(priv_key)) {
-	    if (!EC_KEY_set_private_key(key, priv_key))
-		    goto out_err;
-
-	    /* calculate public key (if necessary) */
-	    if (EC_KEY_get0_public_key(key) == NULL)
-	    {
-		    /* the public key was not included in the SEC1 private
-		     * key => calculate the public key */
-		    pub_key = EC_POINT_new(group);
-		    if (pub_key == NULL
-			|| !EC_POINT_copy(pub_key, EC_GROUP_get0_generator(group))
-			|| !EC_POINT_mul(group, pub_key, priv_key, NULL, NULL, NULL)
-			|| !EC_KEY_set_public_key(key, pub_key))
-			    goto out_err;
-	    }
-    }
-
-    goto out;
-
-out_err:
-    if (key) EC_KEY_free(key);
-    key = NULL;
-
-out:
-    /* some OpenSSL structures are mem-dup'ed into the key,
-       so we have to free our copies here */
-    if (priv_key) BN_clear_free(priv_key);
-    if (pub_key) EC_POINT_free(pub_key);
-    if (group) EC_GROUP_free(group);
-    if (!key)
-	return 0;
-    *res = key;
-    return 1;
-}
-#endif /* HAVE_EC */
-
-static ERL_NIF_TERM ec_key_generate(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{
-#if defined(HAVE_EC)
-    EC_KEY *key = NULL;
-    const EC_GROUP *group;
-    const EC_POINT *public_key;
-    ERL_NIF_TERM priv_key;
-    ERL_NIF_TERM pub_key = atom_undefined;
-
-    if (!get_ec_key(env, argv[0], argv[1], atom_undefined, &key))
-	goto badarg;
-
-    if (argv[1] == atom_undefined) {
-	if (!EC_KEY_generate_key(key))
-	    goto badarg;
-    }
-
-    group = EC_KEY_get0_group(key);
-    public_key = EC_KEY_get0_public_key(key);
-
-    if (group && public_key) {
-	pub_key = point2term(env, group, public_key,
-			     EC_KEY_get_conv_form(key));
-    }
-    priv_key = bn2term(env, EC_KEY_get0_private_key(key));
-    EC_KEY_free(key);
-    return enif_make_tuple2(env, pub_key, priv_key);
-
-badarg:
-    if (key)
-	EC_KEY_free(key);
-    return make_badarg_maybe(env);
-#else
-    return atom_notsup;
-#endif
-}
-
-/*
-  (_OthersPublicKey, _MyPrivateKey)
-  (_OthersPublicKey, _MyEC_Point)
-*/
-static ERL_NIF_TERM ecdh_compute_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-/* (OtherPublicKey, Curve, My) */
-{
-#if defined(HAVE_EC)
-    ERL_NIF_TERM ret;
-    unsigned char *p;
-    EC_KEY* key = NULL;
-    int field_size = 0;
-    int i;
-    EC_GROUP *group;
-    const BIGNUM *priv_key;
-    EC_POINT *my_ecpoint = NULL;
-    EC_KEY *other_ecdh = NULL;
-
-    if (!get_ec_key(env, argv[1], argv[2], atom_undefined, &key))
-	return make_badarg_maybe(env);
-
-    group    = EC_GROUP_dup(EC_KEY_get0_group(key));
-    priv_key = EC_KEY_get0_private_key(key);
-
-    if (!term2point(env, argv[0], group, &my_ecpoint)) {
-	goto out_err;
-    }
-
-    if ((other_ecdh = EC_KEY_new()) == NULL
-	|| !EC_KEY_set_group(other_ecdh, group)
-	|| !EC_KEY_set_private_key(other_ecdh, priv_key))
-	goto out_err;
-
-    field_size = EC_GROUP_get_degree(group);
-    if (field_size <= 0)
-	goto out_err;
-
-    p = enif_make_new_binary(env, (field_size+7)/8, &ret);
-    i = ECDH_compute_key(p, (field_size+7)/8, my_ecpoint, other_ecdh, NULL);
-
-    if (i < 0)
-	    goto out_err;
-out:
-    if (group) EC_GROUP_free(group);
-    if (my_ecpoint) EC_POINT_free(my_ecpoint);
-    if (other_ecdh) EC_KEY_free(other_ecdh);
-    if (key) EC_KEY_free(key);
-
-    return ret;
-
-out_err:
-    ret = enif_make_badarg(env);
-    goto out;
-#else
-    return atom_notsup;
-#endif
-}
-
-static ERL_NIF_TERM evp_compute_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-    /*    (Curve, PeerBin, MyBin) */
-{
-#ifdef HAVE_ED_CURVE_DH
-    int type;
-    EVP_PKEY_CTX *ctx = NULL;
-    ErlNifBinary peer_bin, my_bin, key_bin;
-    EVP_PKEY *peer_key = NULL, *my_key = NULL;
-    size_t max_size;
-
-    if (argv[0] == atom_x25519) type = EVP_PKEY_X25519;
-    else if (argv[0] == atom_x448) type = EVP_PKEY_X448;
-    else return enif_make_badarg(env);
-
-    if (!enif_inspect_binary(env, argv[1], &peer_bin) ||
-        !enif_inspect_binary(env, argv[2], &my_bin)) 
-        goto return_badarg;
-
-    if (!(my_key = EVP_PKEY_new_raw_private_key(type, NULL, my_bin.data, my_bin.size)) ||
-        !(ctx = EVP_PKEY_CTX_new(my_key, NULL))) 
-        goto return_badarg;
-
-    if (!EVP_PKEY_derive_init(ctx)) 
-        goto return_badarg;
-
-    if (!(peer_key = EVP_PKEY_new_raw_public_key(type, NULL, peer_bin.data, peer_bin.size)) ||
-        !EVP_PKEY_derive_set_peer(ctx, peer_key)) 
-        goto return_badarg;
-
-    if (!EVP_PKEY_derive(ctx, NULL, &max_size)) 
-        goto return_badarg;
-
-    if (!enif_alloc_binary(max_size, &key_bin) ||
-        !EVP_PKEY_derive(ctx, key_bin.data, &key_bin.size)) 
-        goto return_badarg;
-
-    if (key_bin.size < max_size) {
-        size_t actual_size = key_bin.size;
-        if (!enif_realloc_binary(&key_bin, actual_size)) 
-            goto return_badarg;
-    }
-
-    EVP_PKEY_free(my_key);
-    EVP_PKEY_free(peer_key);
-    EVP_PKEY_CTX_free(ctx);
-    return enif_make_binary(env, &key_bin);
-
-return_badarg:
-    if (my_key)   EVP_PKEY_free(my_key);
-    if (peer_key) EVP_PKEY_free(peer_key);
-    if (ctx)      EVP_PKEY_CTX_free(ctx);
-    return enif_make_badarg(env);
-#else
-    return atom_notsup;
-#endif
-}
-
-static ERL_NIF_TERM evp_generate_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-/* (Curve) */
-{
-#ifdef HAVE_ED_CURVE_DH
-    int type;
-    EVP_PKEY_CTX *ctx = NULL;
-    EVP_PKEY *pkey = NULL;
-    ERL_NIF_TERM ret_pub, ret_prv;
-    size_t key_len;
-
-    if (argv[0] == atom_x25519) type = EVP_PKEY_X25519;
-    else if (argv[0] == atom_x448) type = EVP_PKEY_X448;
-    else return enif_make_badarg(env);
-
-    if (!(ctx = EVP_PKEY_CTX_new_id(type, NULL))) return enif_make_badarg(env);
-
-    if (!EVP_PKEY_keygen_init(ctx)) goto return_error;
-    if (!EVP_PKEY_keygen(ctx, &pkey)) goto return_error;
-
-    if (!EVP_PKEY_get_raw_public_key(pkey, NULL, &key_len)) goto return_error;
-    if (!EVP_PKEY_get_raw_public_key(pkey,
-                                     enif_make_new_binary(env, key_len, &ret_pub),
-                                     &key_len))
-        goto return_error;
-
-    if (!EVP_PKEY_get_raw_private_key(pkey, NULL, &key_len)) goto return_error;
-    if (!EVP_PKEY_get_raw_private_key(pkey,
-                                      enif_make_new_binary(env, key_len, &ret_prv),
-                                      &key_len))
-        goto return_error;
-
-    EVP_PKEY_free(pkey);
-    EVP_PKEY_CTX_free(ctx);
-    return enif_make_tuple2(env, ret_pub, ret_prv);
-
-return_error:
-    if (pkey) EVP_PKEY_free(pkey);
-    if (ctx)  EVP_PKEY_CTX_free(ctx);
-    return atom_error;
-
-#else
-    return atom_notsup;
-#endif
-}
-
-/*================================================================*/
-#define PKEY_BADARG -1
-#define PKEY_NOTSUP 0
-#define PKEY_OK 1
-
-typedef struct PKeyCryptOptions {
-    const EVP_MD *rsa_mgf1_md;
-    ErlNifBinary rsa_oaep_label;
-    const EVP_MD *rsa_oaep_md;
-    int rsa_padding;
-    const EVP_MD *signature_md;
-} PKeyCryptOptions;
-
-typedef struct PKeySignOptions {
-    const EVP_MD *rsa_mgf1_md;
-    int rsa_padding;
-    int rsa_pss_saltlen;
-} PKeySignOptions;
-
-static int get_pkey_digest_type(ErlNifEnv *env, ERL_NIF_TERM algorithm, ERL_NIF_TERM type,
-				const EVP_MD **md)
-{
-    struct digest_type_t *digp = NULL;
-    *md = NULL;
-
-    if (type == atom_none && algorithm == atom_rsa) return PKEY_OK;
-#ifdef HAVE_EDDSA
-    if (algorithm == atom_eddsa) return PKEY_OK;
-#endif
-    digp = get_digest_type(type);
-    if (!digp) return PKEY_BADARG;
-    if (!digp->md.p) return PKEY_NOTSUP;
-
-    *md = digp->md.p;
-    return PKEY_OK;
-}
-
-
-static int get_pkey_sign_digest(ErlNifEnv *env, ERL_NIF_TERM algorithm,
-				ERL_NIF_TERM type, ERL_NIF_TERM data,
-				unsigned char *md_value, const EVP_MD **mdp,
-				unsigned char **tbsp, size_t *tbslenp)
-{
-    int i;
-    const ERL_NIF_TERM *tpl_terms;
-    int tpl_arity;
-    ErlNifBinary tbs_bin;
-    EVP_MD_CTX *mdctx;
-    const EVP_MD *md = *mdp;
-    unsigned char *tbs = *tbsp;
-    size_t tbslen = *tbslenp;
-    unsigned int tbsleni;
-
-    if ((i = get_pkey_digest_type(env, algorithm, type, &md)) != PKEY_OK) {
-	return i;
-    }
-    if (enif_get_tuple(env, data, &tpl_arity, &tpl_terms)) {
-	if (tpl_arity != 2 || tpl_terms[0] != atom_digest
-	    || !enif_inspect_binary(env, tpl_terms[1], &tbs_bin)
-	    || (md != NULL && tbs_bin.size != EVP_MD_size(md))) {
-	    return PKEY_BADARG;
-	}
-        /* We have a digest (= hashed text) in tbs_bin */
-	tbs = tbs_bin.data;
-	tbslen = tbs_bin.size;
-    } else if (md == NULL) {
-	if (!enif_inspect_binary(env, data, &tbs_bin)) {
-	    return PKEY_BADARG;
-	}
-        /* md == NULL, that is no hashing because DigestType argument was atom_none */
-	tbs = tbs_bin.data;
-	tbslen = tbs_bin.size;
-    } else {
-	if (!enif_inspect_binary(env, data, &tbs_bin)) {
-	    return PKEY_BADARG;
-	}
-        /* We have the cleartext in tbs_bin and the hash algo info in md */
-	tbs = md_value;
-	mdctx = EVP_MD_CTX_create();
-	if (!mdctx) {
-	    return PKEY_BADARG;
-	}
-        /* Looks well, now hash the plain text into a digest according to md */
-	if (EVP_DigestInit_ex(mdctx, md, NULL) <= 0) {
-	    EVP_MD_CTX_destroy(mdctx);
-	    return PKEY_BADARG;
-	}
-	if (EVP_DigestUpdate(mdctx, tbs_bin.data, tbs_bin.size) <= 0) {
-	    EVP_MD_CTX_destroy(mdctx);
-	    return PKEY_BADARG;
-	}
-	if (EVP_DigestFinal_ex(mdctx, tbs, &tbsleni) <= 0) {
-	    EVP_MD_CTX_destroy(mdctx);
-	    return PKEY_BADARG;
-	}
-	tbslen = (size_t)(tbsleni);
-	EVP_MD_CTX_destroy(mdctx);
-    }
-
-    *mdp = md;
-    *tbsp = tbs;
-    *tbslenp = tbslen;
-
-    return PKEY_OK;
-}
-
-
-static int get_pkey_sign_options(ErlNifEnv *env, ERL_NIF_TERM algorithm, ERL_NIF_TERM options,
-                                 const EVP_MD *md, PKeySignOptions *opt)
-{
-    ERL_NIF_TERM head, tail;
-    const ERL_NIF_TERM *tpl_terms;
-    int tpl_arity;
-    const EVP_MD *opt_md;
-    int i;
-
-    if (!enif_is_list(env, options)) {
-	return PKEY_BADARG;
-    }
-
-    /* defaults */
-    if (algorithm == atom_rsa) {
-	opt->rsa_mgf1_md = NULL;
-	opt->rsa_padding = RSA_PKCS1_PADDING;
-	opt->rsa_pss_saltlen = -2;
-    }
-
-    if (enif_is_empty_list(env, options)) {
-	return PKEY_OK;
-    }
-
-    if (algorithm == atom_rsa) {
-	tail = options;
-	while (enif_get_list_cell(env, tail, &head, &tail)) {
-	    if (enif_get_tuple(env, head, &tpl_arity, &tpl_terms) && tpl_arity == 2) {
-		if (tpl_terms[0] == atom_rsa_mgf1_md && enif_is_atom(env, tpl_terms[1])) {
-		    i = get_pkey_digest_type(env, algorithm, tpl_terms[1], &opt_md);
-		    if (i != PKEY_OK) {
-			return i;
-		    }
-		    opt->rsa_mgf1_md = opt_md;
-		} else if (tpl_terms[0] == atom_rsa_padding) {
-		    if (tpl_terms[1] == atom_rsa_pkcs1_padding) {
-			opt->rsa_padding = RSA_PKCS1_PADDING;
-                    } else if (tpl_terms[1] == atom_rsa_pkcs1_pss_padding) {
-#ifdef HAVE_RSA_PKCS1_PSS_PADDING
-                        opt->rsa_padding = RSA_PKCS1_PSS_PADDING;
-                        if (opt->rsa_mgf1_md == NULL) {
-                            opt->rsa_mgf1_md = md;
-                        }
-#else
-                        return PKEY_NOTSUP;
-#endif
-		    } else if (tpl_terms[1] == atom_rsa_x931_padding) {
-			opt->rsa_padding = RSA_X931_PADDING;
-		    } else if (tpl_terms[1] == atom_rsa_no_padding) {
-			opt->rsa_padding = RSA_NO_PADDING;
-		    } else {
-			return PKEY_BADARG;
-		    }
-		} else if (tpl_terms[0] == atom_rsa_pss_saltlen) {
-		    if (!enif_get_int(env, tpl_terms[1], &(opt->rsa_pss_saltlen))
-			|| opt->rsa_pss_saltlen < -2) {
-			return PKEY_BADARG;
-		    }
-		} else {
-		    return PKEY_BADARG;
-		}
-	    } else {
-		return PKEY_BADARG;
-	    }
-	}
-    } else {
-	return PKEY_BADARG;
-    }
-
-    return PKEY_OK;
-}
-
-
-#ifdef HAS_ENGINE_SUPPORT
-static int get_engine_and_key_id(ErlNifEnv *env, ERL_NIF_TERM key, char ** id, ENGINE **e)
-{
-    ERL_NIF_TERM engine_res, key_id_term;
-    struct engine_ctx *ctx;
-    ErlNifBinary key_id_bin;
-
-    if (!enif_get_map_value(env, key, atom_engine, &engine_res) ||
-        !enif_get_resource(env, engine_res, engine_ctx_rtype, (void**)&ctx) ||
-        !enif_get_map_value(env, key, atom_key_id, &key_id_term) ||
-        !enif_inspect_binary(env, key_id_term, &key_id_bin)) {
-        return 0;
-    }
-    else {
-        *e = ctx->engine;
-        return zero_terminate(key_id_bin, id);
-    }
-}
-
-
-static char *get_key_password(ErlNifEnv *env, ERL_NIF_TERM key) {
-    ERL_NIF_TERM tmp_term;
-    ErlNifBinary pwd_bin;
-    char *pwd = NULL;
-    if (enif_get_map_value(env, key, atom_password, &tmp_term) &&
-        enif_inspect_binary(env, tmp_term, &pwd_bin) &&
-        zero_terminate(pwd_bin, &pwd)
-        ) return pwd;
-
-    return NULL;
-}
-
-static int zero_terminate(ErlNifBinary bin, char **buf) {
-    *buf = enif_alloc(bin.size+1);
-    if (!*buf)
-        return 0;
-    memcpy(*buf, bin.data, bin.size);
-    *(*buf+bin.size) = 0;
-    return 1;
-}
-#endif
-
-static int get_pkey_private_key(ErlNifEnv *env, ERL_NIF_TERM algorithm, ERL_NIF_TERM key, EVP_PKEY **pkey)
-{
-    if (enif_is_map(env, key)) {
-#ifdef HAS_ENGINE_SUPPORT
-        /* Use key stored in engine */
-        ENGINE *e;
-        char *id = NULL;
-        char *password;
-
-        if (!get_engine_and_key_id(env, key, &id, &e))
-            return PKEY_BADARG;
-        password = get_key_password(env, key);
-        *pkey = ENGINE_load_private_key(e, id, NULL, password);
-        if (password) enif_free(password);
-        enif_free(id);
-        if (!*pkey)
-            return PKEY_BADARG;
-#else
-        return PKEY_BADARG;
-#endif
-    }
-    else if (algorithm == atom_rsa) {
-	RSA *rsa = RSA_new();
-
-	if (!get_rsa_private_key(env, key, rsa)) {
-	    RSA_free(rsa);
-	    return PKEY_BADARG;
-	}
-
-	*pkey = EVP_PKEY_new();
-	if (!EVP_PKEY_assign_RSA(*pkey, rsa)) {
-	    EVP_PKEY_free(*pkey);
-	    RSA_free(rsa);
-	    return PKEY_BADARG;
-	}
-    } else if (algorithm == atom_ecdsa) {
-#if defined(HAVE_EC)
-	EC_KEY *ec = NULL;
-	const ERL_NIF_TERM *tpl_terms;
-	int tpl_arity;
-
-	if (enif_get_tuple(env, key, &tpl_arity, &tpl_terms) && tpl_arity == 2
-	    && enif_is_tuple(env, tpl_terms[0]) && enif_is_binary(env, tpl_terms[1])
-	    && get_ec_key(env, tpl_terms[0], tpl_terms[1], atom_undefined, &ec)) {
-
-	    *pkey = EVP_PKEY_new();
-	    if (!EVP_PKEY_assign_EC_KEY(*pkey, ec)) {
-		EVP_PKEY_free(*pkey);
-		EC_KEY_free(ec);
-		return PKEY_BADARG;
-	    }
-	} else {
-	    return PKEY_BADARG;
-	}
-#else
-	return PKEY_NOTSUP;
-#endif
-    } else if (algorithm == atom_eddsa) {
-#if defined(HAVE_EDDSA)
-        if (!get_eddsa_key(env, 0, key, pkey)) {
-            return PKEY_BADARG;
-        }
-#else
-     return PKEY_NOTSUP;  
-#endif
-    } else if (algorithm == atom_dss) {
-	DSA *dsa = DSA_new();
-
-	if (!get_dss_private_key(env, key, dsa)) {
-	    DSA_free(dsa);
-            return PKEY_BADARG;
-        }
-
-	*pkey = EVP_PKEY_new();
-	if (!EVP_PKEY_assign_DSA(*pkey, dsa)) {
-	    EVP_PKEY_free(*pkey);
-	    DSA_free(dsa);
-	    return PKEY_BADARG;
-	}
-    } else {
-	return PKEY_BADARG;
-    }
-
-    return PKEY_OK;
-}
-
-
-static int get_pkey_public_key(ErlNifEnv *env, ERL_NIF_TERM algorithm, ERL_NIF_TERM key,
-			       EVP_PKEY **pkey)
-{
-    if (enif_is_map(env, key)) {
-#ifdef HAS_ENGINE_SUPPORT
-        /* Use key stored in engine */
-        ENGINE *e;
-        char *id = NULL;
-        char *password;
-
-        if (!get_engine_and_key_id(env, key, &id, &e))
-            return PKEY_BADARG;
-        password = get_key_password(env, key);
-        *pkey = ENGINE_load_public_key(e, id, NULL, password);
-        if (password) enif_free(password);
-        enif_free(id);
-        if (!pkey)
-            return PKEY_BADARG;
-#else
-        return PKEY_BADARG;
-#endif
-    } else  if (algorithm == atom_rsa) {
-	RSA *rsa = RSA_new();
-
-	if (!get_rsa_public_key(env, key, rsa)) {
-	    RSA_free(rsa);
-	    return PKEY_BADARG;
-	}
-
-	*pkey = EVP_PKEY_new();
-	if (!EVP_PKEY_assign_RSA(*pkey, rsa)) {
-	    EVP_PKEY_free(*pkey);
-	    RSA_free(rsa);
-	    return PKEY_BADARG;
-	}
-    } else if (algorithm == atom_ecdsa) {
-#if defined(HAVE_EC)
-	EC_KEY *ec = NULL;
-	const ERL_NIF_TERM *tpl_terms;
-	int tpl_arity;
-
-	if (enif_get_tuple(env, key, &tpl_arity, &tpl_terms) && tpl_arity == 2
-	    && enif_is_tuple(env, tpl_terms[0]) && enif_is_binary(env, tpl_terms[1])
-	    && get_ec_key(env, tpl_terms[0], atom_undefined, tpl_terms[1], &ec)) {
-
-	    *pkey = EVP_PKEY_new();
-	    if (!EVP_PKEY_assign_EC_KEY(*pkey, ec)) {
-		EVP_PKEY_free(*pkey);
-		EC_KEY_free(ec);
-		return PKEY_BADARG;
-	    }
-	} else {
-	    return PKEY_BADARG;
-	}
-#else
-	return PKEY_NOTSUP;
-#endif
-    } else if (algorithm == atom_eddsa) {
-#if defined(HAVE_EDDSA)
-        if (!get_eddsa_key(env, 1, key, pkey)) {
-            return PKEY_BADARG;
-        }
-#else
-     return PKEY_NOTSUP;  
-#endif
-    } else if (algorithm == atom_dss) {
-	DSA *dsa = DSA_new();
-
-	if (!get_dss_public_key(env, key, dsa)) {
-	    DSA_free(dsa);
-	    return PKEY_BADARG;
-	}
-
-	*pkey = EVP_PKEY_new();
-	if (!EVP_PKEY_assign_DSA(*pkey, dsa)) {
-	    EVP_PKEY_free(*pkey);
-	    DSA_free(dsa);
-	    return PKEY_BADARG;
-	}
-    } else {
-	return PKEY_BADARG;
-    }
-
-    return PKEY_OK;
-}
-
-static ERL_NIF_TERM pkey_sign_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
-{/* (Algorithm, Type, Data|{digest,Digest}, Key|#{}, Options) */
-    int i;
-    const EVP_MD *md = NULL;
-    unsigned char md_value[EVP_MAX_MD_SIZE];
-    EVP_PKEY *pkey;
-#ifdef HAS_EVP_PKEY_CTX
-    EVP_PKEY_CTX *ctx;
-    size_t siglen;
-#else
-    unsigned len, siglen;
-#endif
-    PKeySignOptions sig_opt;
-    ErlNifBinary sig_bin; /* signature */
-    unsigned char *tbs; /* data to be signed */
-    size_t tbslen;
-/*char buf[1024];
-enif_get_atom(env,argv[0],buf,1024,ERL_NIF_LATIN1); printf("algo=%s ",buf);
-enif_get_atom(env,argv[1],buf,1024,ERL_NIF_LATIN1); printf("hash=%s ",buf);
-printf("\r\n");
-*/
-
-#ifndef HAS_ENGINE_SUPPORT
-    if (enif_is_map(env, argv[3])) {
-        return atom_notsup;
-    }
-#endif
-
-    i = get_pkey_sign_digest(env, argv[0], argv[1], argv[2], md_value, &md, &tbs, &tbslen);
-    if (i != PKEY_OK) {
-	if (i == PKEY_NOTSUP)
-	    return atom_notsup;
-	else
-	    return enif_make_badarg(env);
-    }
-
-    i = get_pkey_sign_options(env, argv[0], argv[4], md, &sig_opt);
-    if (i != PKEY_OK) {
-	if (i == PKEY_NOTSUP)
-	    return atom_notsup;
-	else
-	    return enif_make_badarg(env);
-    }
-
-    if (get_pkey_private_key(env, argv[0], argv[3], &pkey) != PKEY_OK) {
-	return enif_make_badarg(env);
-    }
-
-#ifdef HAS_EVP_PKEY_CTX
-    ctx = EVP_PKEY_CTX_new(pkey, NULL);
-    if (!ctx) goto badarg;
-
-    if (argv[0] != atom_eddsa) {
-        if (EVP_PKEY_sign_init(ctx) <= 0) goto badarg;
-        if (md != NULL && EVP_PKEY_CTX_set_signature_md(ctx, md) <= 0) goto badarg;
-    }
-
-    if (argv[0] == atom_rsa) {
-	if (EVP_PKEY_CTX_set_rsa_padding(ctx, sig_opt.rsa_padding) <= 0) goto badarg;
-# ifdef HAVE_RSA_PKCS1_PSS_PADDING
-	if (sig_opt.rsa_padding == RSA_PKCS1_PSS_PADDING) {
-            if (sig_opt.rsa_mgf1_md != NULL) {
-# ifdef HAVE_RSA_MGF1_MD
-		if (EVP_PKEY_CTX_set_rsa_mgf1_md(ctx, sig_opt.rsa_mgf1_md) <= 0) goto badarg;
-# else
-                EVP_PKEY_CTX_free(ctx);
-                EVP_PKEY_free(pkey);
-                return atom_notsup;
-# endif
-            }
-	    if (sig_opt.rsa_pss_saltlen > -2
-		&& EVP_PKEY_CTX_set_rsa_pss_saltlen(ctx, sig_opt.rsa_pss_saltlen) <= 0)
-		goto badarg;
-	}
-#endif
-    }
-
-    if (argv[0] == atom_eddsa) {
-#ifdef HAVE_EDDSA
-        EVP_MD_CTX* mdctx = EVP_MD_CTX_new();
-        if (!EVP_DigestSignInit(mdctx, NULL, NULL, NULL, pkey)) {
-            if (mdctx) EVP_MD_CTX_free(mdctx);
-            goto badarg;
-        }
-
-        if (!EVP_DigestSign(mdctx, NULL, &siglen, tbs, tbslen)) {
-            EVP_MD_CTX_free(mdctx);
-            goto badarg;
-        }
-        enif_alloc_binary(siglen, &sig_bin);
-
-        if (!EVP_DigestSign(mdctx, sig_bin.data, &siglen, tbs, tbslen)) {
-            EVP_MD_CTX_free(mdctx);
-            goto badarg;
-        }
-        EVP_MD_CTX_free(mdctx);
-#else
-        goto badarg;    
-#endif
-    }
-    else
-    {
-        if (EVP_PKEY_sign(ctx, NULL, &siglen, tbs, tbslen) <= 0) goto badarg;
-        enif_alloc_binary(siglen, &sig_bin);
-
-        if (md != NULL) {
-            ERL_VALGRIND_ASSERT_MEM_DEFINED(tbs, EVP_MD_size(md));
-        }
-        i = EVP_PKEY_sign(ctx, sig_bin.data, &siglen, tbs, tbslen);
-    }
-        
-    EVP_PKEY_CTX_free(ctx);
-#else
-/*printf("Old interface\r\n");
- */
-    if (argv[0] == atom_rsa) {
-       RSA *rsa = EVP_PKEY_get1_RSA(pkey);
-       enif_alloc_binary(RSA_size(rsa), &sig_bin);
-       len = EVP_MD_size(md);
-       ERL_VALGRIND_ASSERT_MEM_DEFINED(tbs, len);
-       i = RSA_sign(md->type, tbs, len, sig_bin.data, &siglen, rsa);
-       RSA_free(rsa);
-    } else if (argv[0] == atom_dss) {
-       DSA *dsa = EVP_PKEY_get1_DSA(pkey);
-       enif_alloc_binary(DSA_size(dsa), &sig_bin);
-       len = EVP_MD_size(md);
-       ERL_VALGRIND_ASSERT_MEM_DEFINED(tbs, len);
-       i = DSA_sign(md->type, tbs, len, sig_bin.data, &siglen, dsa);
-       DSA_free(dsa);
-    } else if (argv[0] == atom_ecdsa) {
-#if defined(HAVE_EC)
-       EC_KEY *ec = EVP_PKEY_get1_EC_KEY(pkey);
-       enif_alloc_binary(ECDSA_size(ec), &sig_bin);
-       len = EVP_MD_size(md);
-       ERL_VALGRIND_ASSERT_MEM_DEFINED(tbs, len);
-       i = ECDSA_sign(md->type, tbs, len, sig_bin.data, &siglen, ec);
-       EC_KEY_free(ec);
-#else
-       EVP_PKEY_free(pkey);
-       return atom_notsup;
-#endif
-    } else {
-	goto badarg;
-    }
-#endif
-
-    EVP_PKEY_free(pkey);
-    if (i == 1) {
-	ERL_VALGRIND_MAKE_MEM_DEFINED(sig_bin.data, siglen);
-	if (siglen != sig_bin.size) {
-	    enif_realloc_binary(&sig_bin, siglen);
-	    ERL_VALGRIND_ASSERT_MEM_DEFINED(sig_bin.data, siglen);
-	}
-	return enif_make_binary(env, &sig_bin);
-    } else {
-	enif_release_binary(&sig_bin);
-	return atom_error;
-    }
-
- badarg:
-#ifdef HAS_EVP_PKEY_CTX
-    EVP_PKEY_CTX_free(ctx);
-#endif
-    EVP_PKEY_free(pkey);
-    return enif_make_badarg(env);
-}
-
-
-static ERL_NIF_TERM pkey_verify_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
-{/* (Algorithm, Type, Data|{digest,Digest}, Signature, Key, Options) */
-    int i;
-    const EVP_MD *md = NULL;
-    unsigned char md_value[EVP_MAX_MD_SIZE];
-    EVP_PKEY *pkey;
-#ifdef HAS_EVP_PKEY_CTX
-    EVP_PKEY_CTX *ctx;
-#else
-#endif
-    PKeySignOptions sig_opt;
-    ErlNifBinary sig_bin; /* signature */
-    unsigned char *tbs; /* data to be signed */
-    size_t tbslen;
-
-#ifndef HAS_ENGINE_SUPPORT
-    if (enif_is_map(env, argv[4])) {
-        return atom_notsup;
-    }
-#endif
-
-    if (!enif_inspect_binary(env, argv[3], &sig_bin)) {
-	return enif_make_badarg(env);
-    }
-
-    i = get_pkey_sign_digest(env, argv[0], argv[1], argv[2], md_value, &md, &tbs, &tbslen);
-    if (i != PKEY_OK) {
-	if (i == PKEY_NOTSUP)
-	    return atom_notsup;
-	else
-	    return enif_make_badarg(env);
-    }
-
-    i = get_pkey_sign_options(env, argv[0], argv[5], md, &sig_opt);
-    if (i != PKEY_OK) {
-	if (i == PKEY_NOTSUP)
-	    return atom_notsup;
-	else
-	    return enif_make_badarg(env);
-    }
-
-    if (get_pkey_public_key(env, argv[0], argv[4], &pkey) != PKEY_OK) {
-	return enif_make_badarg(env);
-    }
-
-#ifdef HAS_EVP_PKEY_CTX
-/* printf("EVP interface\r\n");
- */
-    ctx = EVP_PKEY_CTX_new(pkey, NULL);
-    if (!ctx) goto badarg;
-
-    if (argv[0] != atom_eddsa) {
-        if (EVP_PKEY_verify_init(ctx) <= 0) goto badarg;
-        if (md != NULL && EVP_PKEY_CTX_set_signature_md(ctx, md) <= 0) goto badarg;
-    }
-
-    if (argv[0] == atom_rsa) {
-	if (EVP_PKEY_CTX_set_rsa_padding(ctx, sig_opt.rsa_padding) <= 0) goto badarg;
-	if (sig_opt.rsa_padding == RSA_PKCS1_PSS_PADDING) {
-            if (sig_opt.rsa_mgf1_md != NULL) {
-# ifdef HAVE_RSA_MGF1_MD
-		if (EVP_PKEY_CTX_set_rsa_mgf1_md(ctx, sig_opt.rsa_mgf1_md) <= 0) goto badarg;
-# else
-                EVP_PKEY_CTX_free(ctx);
-                EVP_PKEY_free(pkey);
-                return atom_notsup;
-# endif
-            }
-	    if (sig_opt.rsa_pss_saltlen > -2
-		&& EVP_PKEY_CTX_set_rsa_pss_saltlen(ctx, sig_opt.rsa_pss_saltlen) <= 0)
-		goto badarg;
-	}
-    }
-
-        if (argv[0] == atom_eddsa) {
-#ifdef HAVE_EDDSA
-        EVP_MD_CTX* mdctx = EVP_MD_CTX_create();
-        
-        if (!EVP_DigestVerifyInit(mdctx, NULL, NULL, NULL, pkey)) {
-            if (mdctx) EVP_MD_CTX_destroy(mdctx);
-            goto badarg;
-        }
-
-        i = EVP_DigestVerify(mdctx, sig_bin.data, sig_bin.size, tbs, tbslen);
-        EVP_MD_CTX_destroy(mdctx);
-#else
-        goto badarg;    
-#endif
-        }
-    else
-        {
-            if (md != NULL) {
-                ERL_VALGRIND_ASSERT_MEM_DEFINED(tbs, EVP_MD_size(md));
-            }
-            i = EVP_PKEY_verify(ctx, sig_bin.data, sig_bin.size, tbs, tbslen);
-        }
-
-    EVP_PKEY_CTX_free(ctx);
-#else
-/*printf("Old interface\r\n");
-*/
-    if (argv[0] == atom_rsa) {
-        RSA *rsa = EVP_PKEY_get1_RSA(pkey);
-        i = RSA_verify(md->type, tbs, tbslen, sig_bin.data, sig_bin.size, rsa);
-        RSA_free(rsa);
-    } else if (argv[0] == atom_dss) {
-        DSA *dsa = EVP_PKEY_get1_DSA(pkey);
-        i = DSA_verify(0, tbs, tbslen, sig_bin.data, sig_bin.size, dsa);
-        DSA_free(dsa);
-    } else if (argv[0] == atom_ecdsa) {
-#if defined(HAVE_EC)
-        EC_KEY *ec = EVP_PKEY_get1_EC_KEY(pkey);
-        i = ECDSA_verify(EVP_MD_type(md), tbs, tbslen, sig_bin.data, sig_bin.size, ec);
-        EC_KEY_free(ec);
-#else
-        EVP_PKEY_free(pkey);
-        return atom_notsup;
-#endif
-    } else {
-	goto badarg;
-    }
-#endif
-
-    EVP_PKEY_free(pkey);
-    if (i == 1) {
-	return atom_true;
-    } else {
-	return atom_false;
-    }
-
- badarg:
-#ifdef HAS_EVP_PKEY_CTX
-    EVP_PKEY_CTX_free(ctx);
-#endif
-    EVP_PKEY_free(pkey);
-    return enif_make_badarg(env);
-}
-
-
-/*--------------------------------*/
-
-static int get_pkey_crypt_options(ErlNifEnv *env, ERL_NIF_TERM algorithm, ERL_NIF_TERM options,
-				  PKeyCryptOptions *opt)
-{
-    ERL_NIF_TERM head, tail;
-    const ERL_NIF_TERM *tpl_terms;
-    int tpl_arity;
-    const EVP_MD *opt_md;
-    int i;
-
-    if (!enif_is_list(env, options)) {
-	return PKEY_BADARG;
-    }
-
-    /* defaults */
-    if (algorithm == atom_rsa) {
-	opt->rsa_mgf1_md = NULL;
-	opt->rsa_oaep_label.data = NULL;
-	opt->rsa_oaep_label.size = 0;
-	opt->rsa_oaep_md = NULL;
-	opt->rsa_padding = RSA_PKCS1_PADDING;
-	opt->signature_md = NULL;
-    }
-
-    if (enif_is_empty_list(env, options)) {
-	return PKEY_OK;
-    }
-
-    if (algorithm == atom_rsa) {
-	tail = options;
-	while (enif_get_list_cell(env, tail, &head, &tail)) {
-	    if (enif_get_tuple(env, head, &tpl_arity, &tpl_terms) && tpl_arity == 2) {
-		if (tpl_terms[0] == atom_rsa_padding
-                    || tpl_terms[0] == atom_rsa_pad /* Compatibility */
-                    ) {
-		    if (tpl_terms[1] == atom_rsa_pkcs1_padding) {
-			opt->rsa_padding = RSA_PKCS1_PADDING;
-#ifdef HAVE_RSA_OAEP_PADDING
-		    } else if (tpl_terms[1] == atom_rsa_pkcs1_oaep_padding) {
-			opt->rsa_padding = RSA_PKCS1_OAEP_PADDING;
-#endif
-#ifdef HAVE_RSA_SSLV23_PADDING
-		    } else if (tpl_terms[1] == atom_rsa_sslv23_padding) {
-			opt->rsa_padding = RSA_SSLV23_PADDING;
-#endif
-		    } else if (tpl_terms[1] == atom_rsa_x931_padding) {
-			opt->rsa_padding = RSA_X931_PADDING;
-		    } else if (tpl_terms[1] == atom_rsa_no_padding) {
-			opt->rsa_padding = RSA_NO_PADDING;
-		    } else {
-			return PKEY_BADARG;
-		    }
-		} else if (tpl_terms[0] == atom_signature_md && enif_is_atom(env, tpl_terms[1])) {
-		    i = get_pkey_digest_type(env, algorithm, tpl_terms[1], &opt_md);
-		    if (i != PKEY_OK) {
-			return i;
-		    }
-		    opt->signature_md = opt_md;
-		} else if (tpl_terms[0] == atom_rsa_mgf1_md && enif_is_atom(env, tpl_terms[1])) {
-#ifndef HAVE_RSA_MGF1_MD
-		    if (tpl_terms[1] != atom_sha)
-			return PKEY_NOTSUP;
-#endif
-		    i = get_pkey_digest_type(env, algorithm, tpl_terms[1], &opt_md);
-		    if (i != PKEY_OK) {
-			return i;
-		    }
-		    opt->rsa_mgf1_md = opt_md;
-		} else if (tpl_terms[0] == atom_rsa_oaep_label
-			   && enif_inspect_binary(env, tpl_terms[1], &(opt->rsa_oaep_label))) {
-#ifdef HAVE_RSA_OAEP_MD
-		    continue;
-#else
-		    return PKEY_NOTSUP;
-#endif
-		} else if (tpl_terms[0] == atom_rsa_oaep_md && enif_is_atom(env, tpl_terms[1])) {
-#ifndef HAVE_RSA_OAEP_MD
-		    if (tpl_terms[1] != atom_sha)
-			return PKEY_NOTSUP;
-#endif
-		    i = get_pkey_digest_type(env, algorithm, tpl_terms[1], &opt_md);
-		    if (i != PKEY_OK) {
-			return i;
-		    }
-		    opt->rsa_oaep_md = opt_md;
-		} else {
-		    return PKEY_BADARG;
-		}
-	    } else {
-		return PKEY_BADARG;
-	    }
-	}
-    } else {
-	return PKEY_BADARG;
-    }
-
-    return PKEY_OK;
-}
-
-static size_t size_of_RSA(EVP_PKEY *pkey) {
-    size_t tmplen;
-    RSA *rsa = EVP_PKEY_get1_RSA(pkey);
-    if (rsa == NULL) return 0;
-    tmplen = RSA_size(rsa);
-    RSA_free(rsa);
-    return tmplen;
-}
-
-static ERL_NIF_TERM pkey_crypt_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
-{/* (Algorithm, Data, PublKey=[E,N]|[E,N,D]|[E,N,D,P1,P2,E1,E2,C], Options, IsPrivate, IsEncrypt) */
-    int i;
-    EVP_PKEY *pkey;
-#ifdef HAS_EVP_PKEY_CTX
-    EVP_PKEY_CTX *ctx;
-#else
-    RSA *rsa;
-#endif
-    PKeyCryptOptions crypt_opt;
-    ErlNifBinary in_bin, out_bin, tmp_bin;
-    size_t outlen;
-#ifdef HAVE_RSA_SSLV23_PADDING
-    size_t tmplen;
-#endif
-    int is_private = (argv[4] == atom_true),
-        is_encrypt = (argv[5] == atom_true);
-    int algo_init = 0;
-
-/* char algo[1024]; */
-
-#ifndef HAS_ENGINE_SUPPORT
-    if (enif_is_map(env, argv[2])) {
-        return atom_notsup;
-    }
-#endif
-
-    if (!enif_inspect_binary(env, argv[1], &in_bin)) {
-	return enif_make_badarg(env);
-    }
-
-    i = get_pkey_crypt_options(env, argv[0], argv[3], &crypt_opt);
-    if (i != PKEY_OK) {
-	if (i == PKEY_NOTSUP)
-	    return atom_notsup;
-	else
-	    return enif_make_badarg(env);
-    }
-
-    if (is_private) {
-	if (get_pkey_private_key(env, argv[0], argv[2], &pkey) != PKEY_OK) {
-	    return enif_make_badarg(env);
-	}
-    } else {
-	if (get_pkey_public_key(env, argv[0], argv[2], &pkey) != PKEY_OK) {
-	    return enif_make_badarg(env);
-	}
-    }
-
-    out_bin.data = NULL;
-    out_bin.size = 0;
-    tmp_bin.data = NULL;
-    tmp_bin.size = 0;
-
-#ifdef HAS_EVP_PKEY_CTX
-    ctx = EVP_PKEY_CTX_new(pkey, NULL);
-    if (!ctx) goto badarg;
-
-/* enif_get_atom(env,argv[0],algo,1024,ERL_NIF_LATIN1);  */
-
-    if (is_private) {
-        if (is_encrypt) {
-            /* private encrypt */
-            if ((algo_init=EVP_PKEY_sign_init(ctx)) <= 0) {
-                /* fprintf(stderr,"BADARG %s private encrypt algo_init=%d %s:%d\r\n", algo, algo_init, __FILE__, __LINE__); */
-                goto badarg;
-            }
-        } else {
-            /* private decrypt */
-            if ((algo_init=EVP_PKEY_decrypt_init(ctx)) <= 0) {
-                /* fprintf(stderr,"BADARG %s private decrypt algo_init=%d %s:%d\r\n", algo, algo_init, __FILE__, __LINE__); */
-                goto badarg;
-            }
-        }
-    } else {
-        if (is_encrypt) {
-            /* public encrypt */
-            if ((algo_init=EVP_PKEY_encrypt_init(ctx)) <= 0) {
-                /* fprintf(stderr,"BADARG %s public encrypt algo_init=%d %s:%d\r\n", algo,algo_init,__FILE__, __LINE__); */
-                goto badarg;
-            }
-        } else {
-            /* public decrypt */
-            if ((algo_init=EVP_PKEY_verify_recover_init(ctx)) <= 0) {
-                /* fprintf(stderr,"BADARG %s public decrypt algo_init=%d %s:%d\r\n", algo,algo_init,__FILE__, __LINE__); */
-                goto badarg;
-            }
-        }
-    }
-
-    if (argv[0] == atom_rsa) {
-	if (crypt_opt.signature_md != NULL
-	    && EVP_PKEY_CTX_set_signature_md(ctx, crypt_opt.signature_md) <= 0)
-		goto badarg;
-#ifdef HAVE_RSA_SSLV23_PADDING
-	if (crypt_opt.rsa_padding == RSA_SSLV23_PADDING) {
-	    if (is_encrypt) {
-                tmplen = size_of_RSA(pkey);
-                if (tmplen == 0) goto badarg;
-		if (!enif_alloc_binary(tmplen, &tmp_bin)) goto badarg;
-		if (RSA_padding_add_SSLv23(tmp_bin.data, tmplen, in_bin.data, in_bin.size) <= 0)
-		    goto badarg;
-		in_bin = tmp_bin;
-	    }
-	    if (EVP_PKEY_CTX_set_rsa_padding(ctx, RSA_NO_PADDING) <= 0) goto badarg;
-	} else
-#endif
-                {
-	    if (EVP_PKEY_CTX_set_rsa_padding(ctx, crypt_opt.rsa_padding) <= 0) goto badarg;
-        }
-#ifdef HAVE_RSA_OAEP_MD
-	if (crypt_opt.rsa_padding == RSA_PKCS1_OAEP_PADDING) {
-	    if (crypt_opt.rsa_oaep_md != NULL
-		&& EVP_PKEY_CTX_set_rsa_oaep_md(ctx, crypt_opt.rsa_oaep_md) <= 0)
-		goto badarg;
-	    if (crypt_opt.rsa_mgf1_md != NULL
-		&& EVP_PKEY_CTX_set_rsa_mgf1_md(ctx, crypt_opt.rsa_mgf1_md) <= 0) goto badarg;
-	    if (crypt_opt.rsa_oaep_label.data != NULL && crypt_opt.rsa_oaep_label.size > 0) {
-		unsigned char *label_copy = NULL;
-		label_copy = OPENSSL_malloc(crypt_opt.rsa_oaep_label.size);
-		if (label_copy == NULL) goto badarg;
-		memcpy((void *)(label_copy), (const void *)(crypt_opt.rsa_oaep_label.data),
-		       crypt_opt.rsa_oaep_label.size);
-		if (EVP_PKEY_CTX_set0_rsa_oaep_label(ctx, label_copy,
-						     crypt_opt.rsa_oaep_label.size) <= 0) {
-		    OPENSSL_free(label_copy);
-		    label_copy = NULL;
-		    goto badarg;
-		}
-	    }
-	}
-#endif
-    }
-
-    if (is_private) {
-	if (is_encrypt) {
-	    /* private_encrypt */
-	    i = EVP_PKEY_sign(ctx, NULL, &outlen, in_bin.data, in_bin.size);
-	} else {
-	    /* private_decrypt */
-	    i = EVP_PKEY_decrypt(ctx, NULL, &outlen, in_bin.data, in_bin.size);
-	}
-    } else {
-	if (is_encrypt) {
-	    /* public_encrypt */
-	    i = EVP_PKEY_encrypt(ctx, NULL, &outlen, in_bin.data, in_bin.size);
-	} else {
-	    /* public_decrypt */
-	    i = EVP_PKEY_verify_recover(ctx, NULL, &outlen, in_bin.data, in_bin.size);
-	}
-    }
-    /* fprintf(stderr,"i = %d %s:%d\r\n", i, __FILE__, __LINE__); */
-
-    if (i != 1) goto badarg;
-
-    enif_alloc_binary(outlen, &out_bin);
-
-    if (is_private) {
-	if (is_encrypt) {
-	    /* private_encrypt */
-	    i = EVP_PKEY_sign(ctx, out_bin.data, &outlen, in_bin.data, in_bin.size);
-	} else {
-	    /* private_decrypt */
-	    i = EVP_PKEY_decrypt(ctx, out_bin.data, &outlen, in_bin.data, in_bin.size);
-	}
-    } else {
-	if (is_encrypt) {
-	    /* public_encrypt */
-	    i = EVP_PKEY_encrypt(ctx, out_bin.data, &outlen, in_bin.data, in_bin.size);
-	} else {
-	    /* public_decrypt */
-	    i = EVP_PKEY_verify_recover(ctx, out_bin.data, &outlen, in_bin.data, in_bin.size);
-	}
-    }
-
-#else
-    /* Non-EVP cryptolib. Only support RSA */
-
-    if (argv[0] != atom_rsa) {
-        algo_init = -2;         /* exitcode: notsup */
-        goto badarg;
-    }
-    rsa = EVP_PKEY_get1_RSA(pkey);
-    enif_alloc_binary(RSA_size(rsa), &out_bin);
-
-    if (is_private) {
-        if (is_encrypt) {
-            /* non-evp rsa private encrypt */
-            ERL_VALGRIND_ASSERT_MEM_DEFINED(in_bin.data,in_bin.size);
-            i = RSA_private_encrypt(in_bin.size, in_bin.data,
-                                    out_bin.data, rsa, crypt_opt.rsa_padding);
-            if (i > 0) {
-                ERL_VALGRIND_MAKE_MEM_DEFINED(out_bin.data, i);
-            }
-        } else {
-            /* non-evp rsa private decrypt */
-            i = RSA_private_decrypt(in_bin.size, in_bin.data,
-                                    out_bin.data, rsa, crypt_opt.rsa_padding);
-            if (i > 0) {
-                ERL_VALGRIND_MAKE_MEM_DEFINED(out_bin.data, i);
-                enif_realloc_binary(&out_bin, i);
-            }
-        }
-    } else {
-        if (is_encrypt) {
-            /* non-evp rsa public encrypt */
-            ERL_VALGRIND_ASSERT_MEM_DEFINED(in_bin.data,in_bin.size);
-            i = RSA_public_encrypt(in_bin.size, in_bin.data,
-                                   out_bin.data, rsa, crypt_opt.rsa_padding);
-            if (i > 0) {
-                ERL_VALGRIND_MAKE_MEM_DEFINED(out_bin.data, i);
-	}
-        } else {
-            /* non-evp rsa public decrypt */
-            i = RSA_public_decrypt(in_bin.size, in_bin.data,
-                                   out_bin.data, rsa, crypt_opt.rsa_padding);
-            if (i > 0) {
-                ERL_VALGRIND_MAKE_MEM_DEFINED(out_bin.data, i);
-                enif_realloc_binary(&out_bin, i);
-            }
-        }
-    }
-
-    outlen = i;
-    RSA_free(rsa);
-#endif
-
-    if ((i > 0) && argv[0] == atom_rsa && !is_encrypt) {
-#ifdef HAVE_RSA_SSLV23_PADDING
-	if (crypt_opt.rsa_padding == RSA_SSLV23_PADDING) {
-	    unsigned char *p;
-            tmplen = size_of_RSA(pkey);
-	    if (tmplen == 0) goto badarg;
-	    if (!enif_alloc_binary(tmplen, &tmp_bin))
-                goto badarg;
-	    p = out_bin.data;
-	    p++;
-	    i = RSA_padding_check_SSLv23(tmp_bin.data, tmplen, p, out_bin.size - 1, tmplen);
-	    if (i >= 0) {
-		outlen = i;
-		in_bin = out_bin;
-		out_bin = tmp_bin;
-		tmp_bin = in_bin;
-		i = 1;
-	    }
-	}
-#endif
-    }
-
-    if (tmp_bin.data != NULL) {
-	enif_release_binary(&tmp_bin);
-    }
-
-#ifdef HAS_EVP_PKEY_CTX
-    EVP_PKEY_CTX_free(ctx);
-#else
-#endif
-    EVP_PKEY_free(pkey);
-    if (i > 0) {
-	ERL_VALGRIND_MAKE_MEM_DEFINED(out_bin.data, outlen);
-	if (outlen != out_bin.size) {
-	    enif_realloc_binary(&out_bin, outlen);
-	    ERL_VALGRIND_ASSERT_MEM_DEFINED(out_bin.data, outlen);
-	}
-	return enif_make_binary(env, &out_bin);
-    } else {
-	enif_release_binary(&out_bin);
-	return atom_error;
-    }
-
- badarg:
-    if (out_bin.data != NULL) {
-	enif_release_binary(&out_bin);
-    }
-    if (tmp_bin.data != NULL) {
-	enif_release_binary(&tmp_bin);
-    }
-#ifdef HAS_EVP_PKEY_CTX
-    EVP_PKEY_CTX_free(ctx);
-#else
-#endif
-    EVP_PKEY_free(pkey);
-    if (algo_init == -2)
-        return atom_notsup;
-    else
-        return enif_make_badarg(env);
-}
-
-
-
-/*--------------------------------*/
-static ERL_NIF_TERM privkey_to_pubkey_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{ /* (Algorithm, PrivKey | KeyMap) */
-    EVP_PKEY *pkey;
-    ERL_NIF_TERM alg = argv[0];
-    ERL_NIF_TERM result[8];
-    if (get_pkey_private_key(env, alg, argv[1], &pkey) != PKEY_OK) {
-	return enif_make_badarg(env);
-    }
-
-    if (alg == atom_rsa) {
-        const BIGNUM *n = NULL, *e = NULL, *d = NULL;
-        RSA *rsa = EVP_PKEY_get1_RSA(pkey);
-        if (rsa) {
-            RSA_get0_key(rsa, &n, &e, &d);
-            result[0] = bin_from_bn(env, e);  // Exponent E
-            result[1] = bin_from_bn(env, n);  // Modulus N = p*q
-            RSA_free(rsa);
-            EVP_PKEY_free(pkey);
-            return enif_make_list_from_array(env, result, 2);
-        }
-
-    } else if (argv[0] == atom_dss) {
-        const BIGNUM *p = NULL, *q = NULL, *g = NULL, *pub_key = NULL;
-        DSA *dsa = EVP_PKEY_get1_DSA(pkey);
-        if (dsa) {
-            DSA_get0_pqg(dsa, &p, &q, &g);
-            DSA_get0_key(dsa, &pub_key, NULL);
-            result[0] = bin_from_bn(env, p);
-            result[1] = bin_from_bn(env, q);
-            result[2] = bin_from_bn(env, g);
-            result[3] = bin_from_bn(env, pub_key);
-	    DSA_free(dsa);
-            EVP_PKEY_free(pkey);
-            return enif_make_list_from_array(env, result, 4);
-        }
-
-    } else if (argv[0] == atom_ecdsa) {
-#if defined(HAVE_EC)
-        /* not yet implemented
-          EC_KEY *ec = EVP_PKEY_get1_EC_KEY(pkey);
-          if (ec) {
-          / * Example of result:
-               {
-                 Curve =  {Field, Prime, Point, Order, CoFactor} =
-                    {
-                      Field =  {prime_field,<<255,...,255>>},
-                      Prime = {<<255,...,252>>,
-                               <<90,...,75>>,
-                               <<196,...,144>>
-                              },
-                      Point =    <<4,...,245>>,
-                      Order =    <<255,...,81>>,
-                      CoFactor = <<1>>
-                    },
-                Key = <<151,...,62>>
-                }
-              or
-              {
-                Curve =
-                    {characteristic_two_field,
-                     M,
-                     Basis = {tpbasis, _}
-                           | {ppbasis, k1, k2, k3}
-                    },
-                Key
-               }
-        * /
-            EVP_PKEY_free(pkey);
-            return enif_make_list_from_array(env, ..., ...);
-        */
-#endif
-    }
-
-    if (pkey) EVP_PKEY_free(pkey);
-    return enif_make_badarg(env);
-}
-
-/*================================================================*/
-
-static ERL_NIF_TERM rand_seed_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{
-    ErlNifBinary seed_bin;
-
-    if (!enif_inspect_binary(env, argv[0], &seed_bin))
-        return enif_make_badarg(env);
-    RAND_seed(seed_bin.data,seed_bin.size);
-    return atom_ok;
-}
-
-/*================================================================*/
-/* Engine */
-/*================================================================*/
-static ERL_NIF_TERM engine_by_id_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (EngineId) */
-#ifdef HAS_ENGINE_SUPPORT
-    ERL_NIF_TERM ret;
-    ErlNifBinary engine_id_bin;
-    char *engine_id;
-    ENGINE *engine;
-    struct engine_ctx *ctx;
-
-    // Get Engine Id
-    if(!enif_inspect_binary(env, argv[0], &engine_id_bin)) {
-        PRINTF_ERR0("engine_by_id_nif Leaved: badarg");
-        return enif_make_badarg(env);
-    } else {
-        engine_id = enif_alloc(engine_id_bin.size+1);
-        (void) memcpy(engine_id, engine_id_bin.data, engine_id_bin.size);
-        engine_id[engine_id_bin.size] = '\0';
-    }
-
-    engine = ENGINE_by_id(engine_id);
-    if(!engine) {
-        enif_free(engine_id);
-        PRINTF_ERR0("engine_by_id_nif Leaved: {error, bad_engine_id}");
-        return enif_make_tuple2(env, atom_error, atom_bad_engine_id);
-    }
-
-    ctx = enif_alloc_resource(engine_ctx_rtype, sizeof(struct engine_ctx));
-    ctx->engine = engine;
-    ctx->id = engine_id;
-
-    ret = enif_make_resource(env, ctx);
-    enif_release_resource(ctx);
-
-    return enif_make_tuple2(env, atom_ok, ret);
-#else
-    return atom_notsup;
-#endif
-}
-
-static ERL_NIF_TERM engine_init_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Engine) */
-#ifdef HAS_ENGINE_SUPPORT
-    ERL_NIF_TERM ret = atom_ok;
-    struct engine_ctx *ctx;
-
-    // Get Engine
-    if (!enif_get_resource(env, argv[0], engine_ctx_rtype, (void**)&ctx)) {
-        PRINTF_ERR0("engine_init_nif Leaved: Parameter not an engine resource object");
-        return enif_make_badarg(env);
-    }
-    if (!ENGINE_init(ctx->engine)) {
-        //ERR_print_errors_fp(stderr);
-        PRINTF_ERR0("engine_init_nif Leaved: {error, engine_init_failed}");
-        return enif_make_tuple2(env, atom_error, atom_engine_init_failed);
-    }
-
-    return ret;
-#else
-    return atom_notsup;
-#endif
-}
-
-static ERL_NIF_TERM engine_free_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Engine) */
-#ifdef HAS_ENGINE_SUPPORT
-    struct engine_ctx *ctx;
-
-    // Get Engine
-    if (!enif_get_resource(env, argv[0], engine_ctx_rtype, (void**)&ctx)) {
-        PRINTF_ERR0("engine_free_nif Leaved: Parameter not an engine resource object");
-        return enif_make_badarg(env);
-    }
-
-    ENGINE_free(ctx->engine);
-    return atom_ok;
-#else
-    return atom_notsup;
-#endif
-}
-
-static ERL_NIF_TERM engine_finish_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Engine) */
-#ifdef HAS_ENGINE_SUPPORT
-    struct engine_ctx *ctx;
-
-    // Get Engine
-    if (!enif_get_resource(env, argv[0], engine_ctx_rtype, (void**)&ctx)) {
-        PRINTF_ERR0("engine_finish_nif Leaved: Parameter not an engine resource object");
-        return enif_make_badarg(env);
-    }
-
-    ENGINE_finish(ctx->engine);
-    return atom_ok;
-#else
-    return atom_notsup;
-#endif
-}
-
-static ERL_NIF_TERM engine_load_dynamic_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* () */
-#ifdef HAS_ENGINE_SUPPORT
-    ENGINE_load_dynamic();
-    return atom_ok;
-#else
-    return atom_notsup;
-#endif
-}
-
-static ERL_NIF_TERM engine_ctrl_cmd_strings_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Engine, Commands) */
-#ifdef HAS_ENGINE_SUPPORT
-    ERL_NIF_TERM ret = atom_ok;
-    unsigned int cmds_len = 0;
-    char **cmds = NULL;
-    struct engine_ctx *ctx;
-    int i, optional = 0;
-
-    // Get Engine
-    if (!enif_get_resource(env, argv[0], engine_ctx_rtype, (void**)&ctx)) {
-        PRINTF_ERR0("engine_ctrl_cmd_strings_nif Leaved: Parameter not an engine resource object");
-        return enif_make_badarg(env);
-    }
-
-    PRINTF_ERR1("Engine Id:  %s\r\n", ENGINE_get_id(ctx->engine));
-
-    // Get Command List
-    if(!enif_get_list_length(env, argv[1], &cmds_len)) {
-        PRINTF_ERR0("engine_ctrl_cmd_strings_nif Leaved: Bad Command List");
-        return enif_make_badarg(env);
-    } else {
-        cmds_len *= 2; // Key-Value list from erlang
-        cmds = enif_alloc((cmds_len+1)*sizeof(char*));
-        if(get_engine_load_cmd_list(env, argv[1], cmds, 0)) {
-            PRINTF_ERR0("engine_ctrl_cmd_strings_nif Leaved: Couldn't read Command List");
-            ret = enif_make_badarg(env);
-            goto error;
-        }
-    }
-
-    if(!enif_get_int(env, argv[2], &optional)) {
-        PRINTF_ERR0("engine_ctrl_cmd_strings_nif Leaved: Parameter optional not an integer");
-        return enif_make_badarg(env);
-    }
-
-    for(i = 0; i < cmds_len; i+=2) {
-        PRINTF_ERR2("Cmd:  %s:%s\r\n",
-                   cmds[i] ? cmds[i] : "(NULL)",
-                   cmds[i+1] ? cmds[i+1] : "(NULL)");
-        if(!ENGINE_ctrl_cmd_string(ctx->engine, cmds[i], cmds[i+1], optional)) {
-            PRINTF_ERR2("Command failed:  %s:%s\r\n",
-                        cmds[i] ? cmds[i] : "(NULL)",
-                        cmds[i+1] ? cmds[i+1] : "(NULL)");
-            //ENGINE_free(ctx->engine);
-            ret = enif_make_tuple2(env, atom_error, atom_ctrl_cmd_failed);
-            PRINTF_ERR0("engine_ctrl_cmd_strings_nif Leaved: {error, ctrl_cmd_failed}");
-            goto error;
-        }
-    }
-
- error:
-    for(i = 0; cmds != NULL && cmds[i] != NULL; i++)
-        enif_free(cmds[i]);
-    enif_free(cmds);
-    return ret;
-#else
-    return atom_notsup;
-#endif
-}
-
-static ERL_NIF_TERM engine_add_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Engine) */
-#ifdef HAS_ENGINE_SUPPORT
-    struct engine_ctx *ctx;
-
-    // Get Engine
-    if (!enif_get_resource(env, argv[0], engine_ctx_rtype, (void**)&ctx)) {
-        PRINTF_ERR0("engine_add_nif Leaved: Parameter not an engine resource object");
-        return enif_make_badarg(env);
-    }
-
-    if (!ENGINE_add(ctx->engine)) {
-        PRINTF_ERR0("engine_add_nif Leaved: {error, add_engine_failed}");
-        return enif_make_tuple2(env, atom_error, atom_add_engine_failed);
-    }
-    return atom_ok;
-#else
-    return atom_notsup;
-#endif
-}
-
-static ERL_NIF_TERM engine_remove_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Engine) */
-#ifdef HAS_ENGINE_SUPPORT
-    struct engine_ctx *ctx;
-
-    // Get Engine
-    if (!enif_get_resource(env, argv[0], engine_ctx_rtype, (void**)&ctx)) {
-        PRINTF_ERR0("engine_remove_nif Leaved: Parameter not an engine resource object");
-        return enif_make_badarg(env);
-    }
-
-    if (!ENGINE_remove(ctx->engine)) {
-        PRINTF_ERR0("engine_remove_nif Leaved: {error, remove_engine_failed}");
-        return enif_make_tuple2(env, atom_error, atom_remove_engine_failed);
-    }
-    return atom_ok;
-#else
-    return atom_notsup;
-#endif
-}
-
-static ERL_NIF_TERM engine_register_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Engine, EngineMethod) */
-#ifdef HAS_ENGINE_SUPPORT
-    struct engine_ctx *ctx;
-    unsigned int method;
-
-    // Get Engine
-    if (!enif_get_resource(env, argv[0], engine_ctx_rtype, (void**)&ctx)) {
-        PRINTF_ERR0("engine_register_nif Leaved: Parameter not an engine resource object");
-        return enif_make_badarg(env);
-    }
-    // Get Method
-    if (!enif_get_uint(env, argv[1], &method)) {
-        PRINTF_ERR0("engine_register_nif Leaved: Parameter Method not an uint");
-        return enif_make_badarg(env);
-    }
-
-    switch(method)
-    {
-#ifdef ENGINE_METHOD_RSA
-    case ENGINE_METHOD_RSA:
-        if (!ENGINE_register_RSA(ctx->engine))
-            return enif_make_tuple2(env, atom_error, atom_register_engine_failed);
-        break;
-#endif
-#ifdef ENGINE_METHOD_DSA
-    case ENGINE_METHOD_DSA:
-        if (!ENGINE_register_DSA(ctx->engine))
-            return enif_make_tuple2(env, atom_error, atom_register_engine_failed);
-        break;
-#endif
-#ifdef ENGINE_METHOD_DH
-    case ENGINE_METHOD_DH:
-        if (!ENGINE_register_DH(ctx->engine))
-            return enif_make_tuple2(env, atom_error, atom_register_engine_failed);
-        break;
-#endif
-#ifdef ENGINE_METHOD_RAND
-    case ENGINE_METHOD_RAND:
-        if (!ENGINE_register_RAND(ctx->engine))
-            return enif_make_tuple2(env, atom_error, atom_register_engine_failed);
-        break;
-#endif
-#ifdef ENGINE_METHOD_ECDH
-    case ENGINE_METHOD_ECDH:
-        if (!ENGINE_register_ECDH(ctx->engine))
-            return enif_make_tuple2(env, atom_error, atom_register_engine_failed);
-        break;
-#endif
-#ifdef ENGINE_METHOD_ECDSA
-    case ENGINE_METHOD_ECDSA:
-        if (!ENGINE_register_ECDSA(ctx->engine))
-            return enif_make_tuple2(env, atom_error, atom_register_engine_failed);
-        break;
-#endif
-#ifdef ENGINE_METHOD_STORE
-    case ENGINE_METHOD_STORE:
-        if (!ENGINE_register_STORE(ctx->engine))
-            return enif_make_tuple2(env, atom_error, atom_register_engine_failed);
-        break;
-#endif
-#ifdef ENGINE_METHOD_CIPHERS
-    case ENGINE_METHOD_CIPHERS:
-        if (!ENGINE_register_ciphers(ctx->engine))
-            return enif_make_tuple2(env, atom_error, atom_register_engine_failed);
-        break;
-#endif
-#ifdef ENGINE_METHOD_DIGESTS
-    case ENGINE_METHOD_DIGESTS:
-        if (!ENGINE_register_digests(ctx->engine))
-            return enif_make_tuple2(env, atom_error, atom_register_engine_failed);
-        break;
-#endif
-#ifdef ENGINE_METHOD_PKEY_METHS
-    case ENGINE_METHOD_PKEY_METHS:
-        if (!ENGINE_register_pkey_meths(ctx->engine))
-            return enif_make_tuple2(env, atom_error, atom_register_engine_failed);
-        break;
-#endif
-#ifdef ENGINE_METHOD_PKEY_ASN1_METHS
-    case ENGINE_METHOD_PKEY_ASN1_METHS:
-        if (!ENGINE_register_pkey_asn1_meths(ctx->engine))
-            return enif_make_tuple2(env, atom_error, atom_register_engine_failed);
-        break;
-#endif
-#ifdef ENGINE_METHOD_EC
-    case ENGINE_METHOD_EC:
-        if (!ENGINE_register_EC(ctx->engine))
-            return enif_make_tuple2(env, atom_error, atom_register_engine_failed);
-        break;
-#endif
-    default:
-        return  enif_make_tuple2(env, atom_error, atom_engine_method_not_supported);
-        break;
-    }
-    return atom_ok;
-#else
-    return atom_notsup;
-#endif
-}
-
-static ERL_NIF_TERM engine_unregister_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Engine, EngineMethod) */
-#ifdef HAS_ENGINE_SUPPORT
-    struct engine_ctx *ctx;
-    unsigned int method;
-
-    // Get Engine
-    if (!enif_get_resource(env, argv[0], engine_ctx_rtype, (void**)&ctx)) {
-        PRINTF_ERR0("engine_unregister_nif Leaved: Parameter not an engine resource object");
-        return enif_make_badarg(env);
-    }
-    // Get Method
-    if (!enif_get_uint(env, argv[1], &method)) {
-        PRINTF_ERR0("engine_unregister_nif Leaved: Parameter Method not an uint");
-        return enif_make_badarg(env);
-    }
-
-    switch(method)
-    {
-#ifdef ENGINE_METHOD_RSA
-    case ENGINE_METHOD_RSA:
-        ENGINE_unregister_RSA(ctx->engine);
-        break;
-#endif
-#ifdef ENGINE_METHOD_DSA
-    case ENGINE_METHOD_DSA:
-        ENGINE_unregister_DSA(ctx->engine);
-        break;
-#endif
-#ifdef ENGINE_METHOD_DH
-    case ENGINE_METHOD_DH:
-        ENGINE_unregister_DH(ctx->engine);
-        break;
-#endif
-#ifdef ENGINE_METHOD_RAND
-    case ENGINE_METHOD_RAND:
-        ENGINE_unregister_RAND(ctx->engine);
-        break;
-#endif
-#ifdef ENGINE_METHOD_ECDH
-    case ENGINE_METHOD_ECDH:
-        ENGINE_unregister_ECDH(ctx->engine);
-        break;
-#endif
-#ifdef ENGINE_METHOD_ECDSA
-    case ENGINE_METHOD_ECDSA:
-        ENGINE_unregister_ECDSA(ctx->engine);
-        break;
-#endif
-#ifdef ENGINE_METHOD_STORE
-    case ENGINE_METHOD_STORE:
-        ENGINE_unregister_STORE(ctx->engine);
-        break;
-#endif
-#ifdef ENGINE_METHOD_CIPHERS
-    case ENGINE_METHOD_CIPHERS:
-        ENGINE_unregister_ciphers(ctx->engine);
-        break;
-#endif
-#ifdef ENGINE_METHOD_DIGESTS
-    case ENGINE_METHOD_DIGESTS:
-        ENGINE_unregister_digests(ctx->engine);
-        break;
-#endif
-#ifdef ENGINE_METHOD_PKEY_METHS
-    case ENGINE_METHOD_PKEY_METHS:
-        ENGINE_unregister_pkey_meths(ctx->engine);
-        break;
-#endif
-#ifdef ENGINE_METHOD_PKEY_ASN1_METHS
-    case ENGINE_METHOD_PKEY_ASN1_METHS:
-        ENGINE_unregister_pkey_asn1_meths(ctx->engine);
-        break;
-#endif
-#ifdef ENGINE_METHOD_EC
-    case ENGINE_METHOD_EC:
-        ENGINE_unregister_EC(ctx->engine);
-        break;
-#endif
-    default:
-        break;
-    }
-    return atom_ok;
-#else
-    return atom_notsup;
-#endif
-}
-
-static ERL_NIF_TERM engine_get_first_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Engine) */
-#ifdef HAS_ENGINE_SUPPORT
-    ERL_NIF_TERM ret;
-    ENGINE *engine;
-    ErlNifBinary engine_bin;
-    struct engine_ctx *ctx;
-
-    engine = ENGINE_get_first();
-    if(!engine) {
-        enif_alloc_binary(0, &engine_bin);
-        engine_bin.size = 0;
-        return enif_make_tuple2(env, atom_ok, enif_make_binary(env, &engine_bin));
-    }
-
-    ctx = enif_alloc_resource(engine_ctx_rtype, sizeof(struct engine_ctx));
-    ctx->engine = engine;
-    ctx->id = NULL;
-
-    ret = enif_make_resource(env, ctx);
-    enif_release_resource(ctx);
-
-    return enif_make_tuple2(env, atom_ok, ret);
-#else
-    return atom_notsup;
-#endif
-}
-
-static ERL_NIF_TERM engine_get_next_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Engine) */
-#ifdef HAS_ENGINE_SUPPORT
-    ERL_NIF_TERM ret;
-    ENGINE *engine;
-    ErlNifBinary engine_bin;
-    struct engine_ctx *ctx, *next_ctx;
-
-    // Get Engine
-    if (!enif_get_resource(env, argv[0], engine_ctx_rtype, (void**)&ctx)) {
-        PRINTF_ERR0("engine_get_next_nif Leaved: Parameter not an engine resource object");
-        return enif_make_badarg(env);
-    }
-    engine = ENGINE_get_next(ctx->engine);
-    if (!engine) {
-        enif_alloc_binary(0, &engine_bin);
-        engine_bin.size = 0;
-        return enif_make_tuple2(env, atom_ok, enif_make_binary(env, &engine_bin));
-    }
-
-    next_ctx = enif_alloc_resource(engine_ctx_rtype, sizeof(struct engine_ctx));
-    next_ctx->engine = engine;
-    next_ctx->id = NULL;
-
-    ret = enif_make_resource(env, next_ctx);
-    enif_release_resource(next_ctx);
-
-    return enif_make_tuple2(env, atom_ok, ret);
-#else
-    return atom_notsup;
-#endif
-}
-
-static ERL_NIF_TERM engine_get_id_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Engine) */
-#ifdef HAS_ENGINE_SUPPORT
-    ErlNifBinary engine_id_bin;
-    const char *engine_id;
-    int size;
-    struct engine_ctx *ctx;
-
-    // Get Engine
-    if (!enif_get_resource(env, argv[0], engine_ctx_rtype, (void**)&ctx)) {
-        PRINTF_ERR0("engine_get_id_nif Leaved: Parameter not an engine resource object");
-        return enif_make_badarg(env);
-    }
-
-    engine_id = ENGINE_get_id(ctx->engine);
-    if (!engine_id) {
-        enif_alloc_binary(0, &engine_id_bin);
-        engine_id_bin.size = 0;
-        return enif_make_binary(env, &engine_id_bin);
-    }
-
-    size = strlen(engine_id);
-    enif_alloc_binary(size, &engine_id_bin);
-    engine_id_bin.size = size;
-    memcpy(engine_id_bin.data, engine_id, size);
-
-    return enif_make_binary(env, &engine_id_bin);
-#else
-    return atom_notsup;
-#endif
-}
-
-static ERL_NIF_TERM engine_get_name_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Engine) */
-#ifdef HAS_ENGINE_SUPPORT
-    ErlNifBinary engine_name_bin;
-    const char *engine_name;
-    int size;
-    struct engine_ctx *ctx;
-
-    // Get Engine
-    if (!enif_get_resource(env, argv[0], engine_ctx_rtype, (void**)&ctx)) {
-        PRINTF_ERR0("engine_get_id_nif Leaved: Parameter not an engine resource object");
-        return enif_make_badarg(env);
-    }
-
-    engine_name = ENGINE_get_name(ctx->engine);
-    if (!engine_name) {
-        enif_alloc_binary(0, &engine_name_bin);
-        engine_name_bin.size = 0;
-        return enif_make_binary(env, &engine_name_bin);
-    }
-
-    size = strlen(engine_name);
-    enif_alloc_binary(size, &engine_name_bin);
-    engine_name_bin.size = size;
-    memcpy(engine_name_bin.data, engine_name, size);
-
-    return enif_make_binary(env, &engine_name_bin);
-#else
-    return atom_notsup;
-#endif
-}
-
-#ifdef HAS_ENGINE_SUPPORT
-static int get_engine_load_cmd_list(ErlNifEnv* env, const ERL_NIF_TERM term, char **cmds, int i)
-{
-    ERL_NIF_TERM head, tail;
-    const ERL_NIF_TERM *tmp_tuple;
-    ErlNifBinary tmpbin;
-    int arity;
-    char* tmpstr;
-
-    if(!enif_is_empty_list(env, term)) {
-        if(!enif_get_list_cell(env, term, &head, &tail)) {
-            cmds[i] = NULL;
-            return -1;
-        } else {
-            if(!enif_get_tuple(env, head, &arity, &tmp_tuple)  || arity != 2) {
-                cmds[i] = NULL;
-                return -1;
-            } else {
-                if(!enif_inspect_binary(env, tmp_tuple[0], &tmpbin)) {
-                    cmds[i] = NULL;
-                    return -1;
-                } else {
-                    tmpstr = enif_alloc(tmpbin.size+1);
-                    (void) memcpy(tmpstr, tmpbin.data, tmpbin.size);
-                    tmpstr[tmpbin.size] = '\0';
-                    cmds[i++] = tmpstr;
-                }
-                if(!enif_inspect_binary(env, tmp_tuple[1], &tmpbin)) {
-                    cmds[i] = NULL;
-                    return -1;
-                } else {
-                    if(tmpbin.size == 0)
-                        cmds[i++] = NULL;
-                    else {
-                        tmpstr = enif_alloc(tmpbin.size+1);
-                        (void) memcpy(tmpstr, tmpbin.data, tmpbin.size);
-                        tmpstr[tmpbin.size] = '\0';
-                        cmds[i++] = tmpstr;
-                    }
-                }
-                return get_engine_load_cmd_list(env, tail, cmds, i);
-            }
-        }
-    } else {
-        cmds[i] = NULL;
-        return 0;
-    }
-}
-#endif
-
-static ERL_NIF_TERM engine_get_all_methods_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* () */
-#ifdef HAS_ENGINE_SUPPORT
-    ERL_NIF_TERM method_array[12];
-    int i = 0;
-
-#ifdef ENGINE_METHOD_RSA
-    method_array[i++] = atom_engine_method_rsa;
-#endif
-#ifdef ENGINE_METHOD_DSA
-    method_array[i++] = atom_engine_method_dsa;
-#endif
-#ifdef ENGINE_METHOD_DH
-    method_array[i++] = atom_engine_method_dh;
-#endif
-#ifdef ENGINE_METHOD_RAND
-    method_array[i++] = atom_engine_method_rand;
-#endif
-#ifdef ENGINE_METHOD_ECDH
-    method_array[i++] = atom_engine_method_ecdh;
-#endif
-#ifdef ENGINE_METHOD_ECDSA
-    method_array[i++] = atom_engine_method_ecdsa;
-#endif
-#ifdef ENGINE_METHOD_STORE
-    method_array[i++] = atom_engine_method_store;
-#endif
-#ifdef ENGINE_METHOD_CIPHERS
-    method_array[i++] = atom_engine_method_ciphers;
-#endif
-#ifdef ENGINE_METHOD_DIGESTS
-    method_array[i++] = atom_engine_method_digests;
-#endif
-#ifdef ENGINE_METHOD_PKEY_METHS
-    method_array[i++] = atom_engine_method_pkey_meths;
-#endif
-#ifdef ENGINE_METHOD_PKEY_ASN1_METHS
-    method_array[i++] = atom_engine_method_pkey_asn1_meths;
-#endif
-#ifdef ENGINE_METHOD_EC
-    method_array[i++] = atom_engine_method_ec;
-#endif
-
-    return enif_make_list_from_array(env, method_array, i);
-#else
-    return atom_notsup;
-#endif
-}
diff --git a/lib/crypto/c_src/crypto_callback.c b/lib/crypto/c_src/crypto_callback.c
index 0cc7dd609d..0141ccd840 100644
--- a/lib/crypto/c_src/crypto_callback.c
+++ b/lib/crypto/c_src/crypto_callback.c
@@ -21,6 +21,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <openssl/opensslconf.h>
+#include <stdint.h>
 
 #include <erl_nif.h>
 #include "crypto_callback.h"
@@ -64,22 +65,36 @@ static void nomem(size_t size, const char* op)
 
 static void* crypto_alloc(size_t size CCB_FILE_LINE_ARGS)
 {
-    void *ret = enif_alloc(size);
+    void *ret;
 
-    if (!ret && size)
-	nomem(size, "allocate");
+    if ((ret = enif_alloc(size)) == NULL)
+        goto err;
     return ret;
+
+ err:
+    if (size)
+	nomem(size, "allocate");
+    return NULL;
 }
 static void* crypto_realloc(void* ptr, size_t size CCB_FILE_LINE_ARGS)
 {
-    void* ret = enif_realloc(ptr, size);
+    void* ret;
 
-    if (!ret && size)
-	nomem(size, "reallocate");
+    if ((ret = enif_realloc(ptr, size)) == NULL)
+        goto err;
     return ret;
+
+ err:
+    if (size)
+	nomem(size, "reallocate");
+    return NULL;
 }
+
 static void crypto_free(void* ptr CCB_FILE_LINE_ARGS)
 {
+    if (ptr == NULL)
+        return;
+
     enif_free(ptr);
 }
 
@@ -160,19 +175,26 @@ DLLEXPORT struct crypto_callbacks* get_crypto_callbacks(int nlocks)
 #ifdef OPENSSL_THREADS
 	if (nlocks > 0) {
 	    int i;
-	    lock_vec = enif_alloc(nlocks*sizeof(*lock_vec));
-	    if (lock_vec==NULL) return NULL;
-	    memset(lock_vec, 0, nlocks*sizeof(*lock_vec));
-	    
+
+            if ((size_t)nlocks > SIZE_MAX / sizeof(*lock_vec))
+                goto err;
+            if ((lock_vec = enif_alloc((size_t)nlocks * sizeof(*lock_vec))) == NULL)
+                goto err;
+
+            memset(lock_vec, 0, (size_t)nlocks * sizeof(*lock_vec));
+
 	    for (i=nlocks-1; i>=0; --i) {
-		lock_vec[i] = enif_rwlock_create("crypto_stat");
-		if (lock_vec[i]==NULL) return NULL;
+		if ((lock_vec[i] = enif_rwlock_create("crypto_stat")) == NULL)
+                    goto err;
 	    }
 	}
 #endif
 	is_initialized = 1;
     }
     return &the_struct;
+
+ err:
+    return NULL;
 }
 
 #ifdef HAVE_DYNAMIC_CRYPTO_LIB
diff --git a/lib/crypto/c_src/dh.c b/lib/crypto/c_src/dh.c
new file mode 100644
index 0000000000..38eb534d99
--- /dev/null
+++ b/lib/crypto/c_src/dh.c
@@ -0,0 +1,294 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#include "dh.h"
+#include "bn.h"
+
+ERL_NIF_TERM dh_generate_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (PrivKey|undefined, DHParams=[P,G], Mpint, Len|0) */
+    DH *dh_params = NULL;
+    unsigned int mpint; /* 0 or 4 */
+    ERL_NIF_TERM head, tail;
+    BIGNUM *dh_p = NULL;
+    BIGNUM *dh_p_shared;
+    BIGNUM *dh_g = NULL;
+    BIGNUM *priv_key_in = NULL;
+    unsigned long len = 0;
+    unsigned char *pub_ptr, *prv_ptr;
+    int pub_len, prv_len;
+    ERL_NIF_TERM ret_pub, ret_prv, ret;
+    const BIGNUM *pub_key_gen, *priv_key_gen;
+#ifdef HAS_EVP_PKEY_CTX
+    EVP_PKEY_CTX *ctx = NULL;
+    EVP_PKEY *dhkey = NULL, *params = NULL;
+#endif
+
+    ASSERT(argc == 4);
+
+    if (argv[0] != atom_undefined) {
+        if (!get_bn_from_bin(env, argv[0], &priv_key_in))
+            goto bad_arg;
+    }
+    if (!enif_get_list_cell(env, argv[1], &head, &tail))
+        goto bad_arg;
+    if (!get_bn_from_bin(env, head, &dh_p))
+        goto bad_arg;
+
+    if (!enif_get_list_cell(env, tail, &head, &tail))
+        goto bad_arg;
+    if (!get_bn_from_bin(env, head, &dh_g))
+        goto bad_arg;
+
+    if (!enif_is_empty_list(env, tail))
+        goto bad_arg;
+
+    if (!enif_get_uint(env, argv[2], &mpint))
+        goto bad_arg;
+    if (mpint != 0 && mpint != 4)
+        goto bad_arg;
+
+    if (!enif_get_ulong(env, argv[3], &len))
+        goto bad_arg;
+    if (len > LONG_MAX)
+        goto bad_arg;
+
+    /* Load dh_params with values to use by the generator.
+       Mem mgmnt transfered from dh_p etc to dh_params */
+    if ((dh_params = DH_new()) == NULL)
+        goto bad_arg;
+    if (priv_key_in) {
+        if (!DH_set0_key(dh_params, NULL, priv_key_in))
+            goto bad_arg;
+        /* On success, dh_params owns priv_key_in */
+        priv_key_in = NULL;
+    }
+    if (!DH_set0_pqg(dh_params, dh_p, NULL, dh_g))
+        goto bad_arg;
+    dh_p_shared = dh_p; /* Don't free this because dh_params owns it */
+    /* On success, dh_params owns dh_p and dh_g */
+    dh_p = NULL;
+    dh_g = NULL;
+
+    if (len) {
+        int bn_len;
+
+        if ((bn_len = BN_num_bits(dh_p_shared)) < 0)
+            goto bad_arg;
+        dh_p_shared = NULL;  /* dh_params owns the reference */
+        if (len >= (size_t)bn_len)
+            goto bad_arg;
+
+        if (!DH_set_length(dh_params, (long)len))
+            goto bad_arg;
+    }
+
+#ifdef HAS_EVP_PKEY_CTX
+    if ((params = EVP_PKEY_new()) == NULL)
+        goto err;
+
+   /* set the key referenced by params to dh_params... */
+    if (EVP_PKEY_set1_DH(params, dh_params) != 1)
+        goto err;
+
+    if ((ctx = EVP_PKEY_CTX_new(params, NULL)) == NULL)
+        goto err;
+
+    if (EVP_PKEY_keygen_init(ctx) != 1)
+        goto err;
+
+    if ((dhkey = EVP_PKEY_new()) == NULL)
+        goto err;
+
+    /* key gen op, key written to ppkey (=last arg) */
+    if (EVP_PKEY_keygen(ctx, &dhkey) != 1)
+        goto err;
+
+    DH_free(dh_params);
+    if ((dh_params = EVP_PKEY_get1_DH(dhkey)) == NULL)
+        goto err;
+
+#else
+    if (!DH_generate_key(dh_params))
+        goto err;
+#endif
+
+    DH_get0_key(dh_params, &pub_key_gen, &priv_key_gen);
+
+    if ((pub_len = BN_num_bytes(pub_key_gen)) < 0)
+        goto err;
+    if ((prv_len = BN_num_bytes(priv_key_gen)) < 0)
+        goto err;
+
+    if ((pub_ptr = enif_make_new_binary(env, (size_t)pub_len+mpint, &ret_pub)) == NULL)
+        goto err;
+    if ((prv_ptr = enif_make_new_binary(env, (size_t)prv_len+mpint, &ret_prv)) == NULL)
+        goto err;
+
+    if (mpint) {
+        put_uint32(pub_ptr, (unsigned int)pub_len);
+        pub_ptr += 4;
+
+        put_uint32(prv_ptr, (unsigned int)prv_len);
+        prv_ptr += 4;
+    }
+
+    if (BN_bn2bin(pub_key_gen, pub_ptr) < 0)
+        goto err;
+    if (BN_bn2bin(priv_key_gen, prv_ptr) < 0)
+        goto err;
+
+    ERL_VALGRIND_MAKE_MEM_DEFINED(pub_ptr, pub_len);
+    ERL_VALGRIND_MAKE_MEM_DEFINED(prv_ptr, prv_len);
+
+    ret = enif_make_tuple2(env, ret_pub, ret_prv);
+    goto done;
+
+ bad_arg:
+    ret = enif_make_badarg(env);
+    goto done;
+
+ err:
+    ret = atom_error;
+
+ done:
+    if (priv_key_in)
+        BN_free(priv_key_in);
+    if (dh_p)
+        BN_free(dh_p);
+    if (dh_g)
+        BN_free(dh_g);
+    if (dh_params)
+        DH_free(dh_params);
+
+#ifdef HAS_EVP_PKEY_CTX
+    if (ctx)
+        EVP_PKEY_CTX_free(ctx);
+    if (dhkey)
+        EVP_PKEY_free(dhkey);
+    if (params)
+        EVP_PKEY_free(params);
+#endif
+
+    return ret;
+}
+
+ERL_NIF_TERM dh_compute_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (OthersPublicKey, MyPrivateKey, DHParams=[P,G]) */
+    BIGNUM *other_pub_key = NULL;
+    BIGNUM *dh_p = NULL;
+    BIGNUM *dh_g = NULL;
+    BIGNUM *dummy_pub_key = NULL;
+    BIGNUM *priv_key = NULL;
+    DH *dh_priv = NULL;
+    ERL_NIF_TERM head, tail, ret;
+    ErlNifBinary ret_bin;
+    int size;
+    int ret_bin_alloc = 0;
+    int dh_size;
+
+    /* Check the arguments and get
+          my private key (dh_priv),
+          the peer's public key (other_pub_key),
+          the parameters p & q
+    */
+    ASSERT(argc == 3);
+
+    if (!get_bn_from_bin(env, argv[0], &other_pub_key))
+        goto bad_arg;
+    if (!get_bn_from_bin(env, argv[1], &priv_key))
+        goto bad_arg;
+
+    if (!enif_get_list_cell(env, argv[2], &head, &tail))
+        goto bad_arg;
+    if (!get_bn_from_bin(env, head, &dh_p))
+        goto bad_arg;
+
+    if (!enif_get_list_cell(env, tail, &head, &tail))
+        goto bad_arg;
+    if (!get_bn_from_bin(env, head, &dh_g))
+        goto bad_arg;
+
+    if (!enif_is_empty_list(env, tail))
+        goto bad_arg;
+
+    /* Note: DH_set0_key() does not allow setting only the
+     * private key, although DH_compute_key() does not use the
+     * public key. Work around this limitation by setting
+     * the public key to a copy of the private key.
+     */
+    if ((dummy_pub_key = BN_dup(priv_key)) == NULL)
+        goto err;
+    if ((dh_priv = DH_new()) == NULL)
+        goto err;
+
+    if (!DH_set0_key(dh_priv, dummy_pub_key, priv_key))
+        goto err;
+    /* dh_priv owns dummy_pub_key and priv_key now */
+    dummy_pub_key = NULL;
+    priv_key = NULL;
+
+    if (!DH_set0_pqg(dh_priv, dh_p, NULL, dh_g))
+        goto err;
+    /* dh_priv owns dh_p and dh_g now */
+    dh_p = NULL;
+    dh_g = NULL;
+
+    if ((dh_size = DH_size(dh_priv)) < 0)
+        goto err;
+    if (!enif_alloc_binary((size_t)dh_size, &ret_bin))
+        goto err;
+    ret_bin_alloc = 1;
+
+    if ((size = DH_compute_key(ret_bin.data, other_pub_key, dh_priv)) < 0)
+        goto err;
+    if (size == 0)
+        goto err;
+
+    if ((size_t)size != ret_bin.size) {
+        if (!enif_realloc_binary(&ret_bin, (size_t)size))
+            goto err;
+    }
+
+    ret = enif_make_binary(env, &ret_bin);
+    ret_bin_alloc = 0;
+    goto done;
+
+ bad_arg:
+ err:
+    if (ret_bin_alloc)
+        enif_release_binary(&ret_bin);
+    ret = enif_make_badarg(env);
+
+ done:
+    if (other_pub_key)
+        BN_free(other_pub_key);
+    if (priv_key)
+        BN_free(priv_key);
+    if (dh_p)
+        BN_free(dh_p);
+    if (dh_g)
+        BN_free(dh_g);
+    if (dummy_pub_key)
+        BN_free(dummy_pub_key);
+    if (dh_priv)
+        DH_free(dh_priv);
+
+    return ret;
+}
diff --git a/lib/crypto/c_src/dh.h b/lib/crypto/c_src/dh.h
new file mode 100644
index 0000000000..a996b0ea28
--- /dev/null
+++ b/lib/crypto/c_src/dh.h
@@ -0,0 +1,29 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifndef E_DH_H__
+#define E_DH_H__ 1
+
+#include "common.h"
+
+ERL_NIF_TERM dh_generate_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM dh_compute_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+
+#endif /* E_DH_H__ */
diff --git a/lib/crypto/c_src/digest.c b/lib/crypto/c_src/digest.c
new file mode 100644
index 0000000000..c987a664d5
--- /dev/null
+++ b/lib/crypto/c_src/digest.c
@@ -0,0 +1,156 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#include "digest.h"
+
+static struct digest_type_t digest_types[] =
+{
+    {{"md4"},
+#ifdef HAVE_MD4
+     {&EVP_md4}
+#else
+    {NULL}
+#endif
+    },
+
+    {{"md5"},
+#ifdef HAVE_MD5
+     {&EVP_md5}
+#else
+     {NULL}
+#endif
+    },
+
+    {{"ripemd160"},
+#ifdef HAVE_RIPEMD160
+     {&EVP_ripemd160}
+#else
+     {NULL}
+#endif
+    },
+
+    {{"sha"}, {&EVP_sha1}},
+
+    {{"sha224"},
+#ifdef HAVE_SHA224
+     {&EVP_sha224}
+#else
+     {NULL}
+#endif
+    },
+
+    {{"sha256"},
+#ifdef HAVE_SHA256
+     {&EVP_sha256}
+#else
+     {NULL}
+#endif
+    },
+
+    {{"sha384"},
+#ifdef HAVE_SHA384
+     {&EVP_sha384}
+#else
+     {NULL}
+#endif
+    },
+
+    {{"sha512"},
+#ifdef HAVE_SHA512
+     {&EVP_sha512}
+#else
+     {NULL}
+#endif
+    },
+
+    {{"sha3_224"},
+#ifdef HAVE_SHA3_224
+     {&EVP_sha3_224}
+#else
+     {NULL}
+#endif
+    },
+
+    {{"sha3_256"},
+#ifdef HAVE_SHA3_256
+     {&EVP_sha3_256}
+#else
+     {NULL}
+#endif
+    },
+
+    {{"sha3_384"},
+#ifdef HAVE_SHA3_384
+     {&EVP_sha3_384}
+#else
+     {NULL}
+#endif
+    },
+
+    {{"sha3_512"},
+#ifdef HAVE_SHA3_512
+     {&EVP_sha3_512}
+#else
+     {NULL}
+#endif
+    },
+
+    {{"blake2b"},
+#ifdef HAVE_BLAKE2
+     {&EVP_blake2b512}
+#else
+     {NULL}
+#endif
+    },
+
+    {{"blake2s"},
+#ifdef HAVE_BLAKE2
+     {&EVP_blake2s256}
+#else
+     {NULL}
+#endif
+    },
+
+    {{NULL}, {NULL}}
+};
+
+void init_digest_types(ErlNifEnv* env)
+{
+    struct digest_type_t* p = digest_types;
+
+    for (p = digest_types; p->type.str; p++) {
+	p->type.atom = enif_make_atom(env, p->type.str);
+	if (p->md.funcp)
+	    p->md.p = p->md.funcp();
+    }
+    p->type.atom = atom_false;  /* end marker */
+}
+
+struct digest_type_t* get_digest_type(ERL_NIF_TERM type)
+{
+    struct digest_type_t* p = NULL;
+    for (p = digest_types; p->type.atom != atom_false; p++) {
+	if (type == p->type.atom) {
+	    return p;
+	}
+    }
+    return NULL;
+}
+
diff --git a/lib/crypto/c_src/digest.h b/lib/crypto/c_src/digest.h
new file mode 100644
index 0000000000..06852416cf
--- /dev/null
+++ b/lib/crypto/c_src/digest.h
@@ -0,0 +1,40 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifndef E_DIGEST_H__
+#define E_DIGEST_H__ 1
+
+#include "common.h"
+
+struct digest_type_t {
+    union {
+	const char*  str;        /* before init, NULL for end-of-table */
+	ERL_NIF_TERM atom;       /* after init, 'false' for end-of-table */
+    }type;
+    union {
+	const EVP_MD* (*funcp)(void);  /* before init, NULL if notsup */
+	const EVP_MD* p;               /* after init, NULL if notsup */
+    }md;
+};
+
+void init_digest_types(ErlNifEnv* env);
+struct digest_type_t* get_digest_type(ERL_NIF_TERM type);
+
+#endif /* E_DIGEST_H__ */
diff --git a/lib/crypto/c_src/dss.c b/lib/crypto/c_src/dss.c
new file mode 100644
index 0000000000..9bf8eb3ce0
--- /dev/null
+++ b/lib/crypto/c_src/dss.c
@@ -0,0 +1,144 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#include "dss.h"
+#include "bn.h"
+
+int get_dss_private_key(ErlNifEnv* env, ERL_NIF_TERM key, DSA *dsa)
+{
+    /* key=[P,Q,G,KEY] */
+    ERL_NIF_TERM head, tail;
+    BIGNUM *dsa_p = NULL, *dsa_q = NULL, *dsa_g = NULL;
+    BIGNUM *dummy_pub_key = NULL, *priv_key = NULL;
+
+    if (!enif_get_list_cell(env, key, &head, &tail))
+        goto err;
+    if (!get_bn_from_bin(env, head, &dsa_p))
+        goto err;
+
+    if (!enif_get_list_cell(env, tail, &head, &tail))
+        goto err;
+    if (!get_bn_from_bin(env, head, &dsa_q))
+        goto err;
+
+    if (!enif_get_list_cell(env, tail, &head, &tail))
+        goto err;
+    if (!get_bn_from_bin(env, head, &dsa_g))
+        goto err;
+
+    if (!enif_get_list_cell(env, tail, &head, &tail))
+        goto err;
+    if (!get_bn_from_bin(env, head, &priv_key))
+        goto err;
+
+    if (!enif_is_empty_list(env, tail))
+        goto err;
+
+    /* Note: DSA_set0_key() does not allow setting only the
+     * private key, although DSA_sign() does not use the
+     * public key. Work around this limitation by setting
+     * the public key to a copy of the private key.
+     */
+    if ((dummy_pub_key = BN_dup(priv_key)) == NULL)
+        goto err;
+
+    if (!DSA_set0_pqg(dsa, dsa_p, dsa_q, dsa_g))
+        goto err;
+    /* dsa takes ownership on success */
+    dsa_p = NULL;
+    dsa_q = NULL;
+    dsa_g = NULL;
+
+    if (!DSA_set0_key(dsa, dummy_pub_key, priv_key))
+        goto err;
+    /* dsa takes ownership on success */
+    dummy_pub_key = NULL;
+    priv_key = NULL;
+
+    return 1;
+
+ err:
+    if (dsa_p)
+        BN_free(dsa_p);
+    if (dsa_q)
+        BN_free(dsa_q);
+    if (dsa_g)
+        BN_free(dsa_g);
+    if (priv_key)
+        BN_free(priv_key);
+    if (dummy_pub_key)
+        BN_free(dummy_pub_key);
+    return 0;
+}
+
+int get_dss_public_key(ErlNifEnv* env, ERL_NIF_TERM key, DSA *dsa)
+{
+    /* key=[P, Q, G, Y] */
+    ERL_NIF_TERM head, tail;
+    BIGNUM *dsa_p = NULL, *dsa_q = NULL, *dsa_g = NULL, *dsa_y = NULL;
+
+    if (!enif_get_list_cell(env, key, &head, &tail))
+        goto err;
+    if (!get_bn_from_bin(env, head, &dsa_p))
+        goto err;
+
+    if (!enif_get_list_cell(env, tail, &head, &tail))
+        goto err;
+    if (!get_bn_from_bin(env, head, &dsa_q))
+        goto err;
+
+    if (!enif_get_list_cell(env, tail, &head, &tail))
+        goto err;
+    if (!get_bn_from_bin(env, head, &dsa_g))
+        goto err;
+
+    if (!enif_get_list_cell(env, tail, &head, &tail))
+        goto err;
+    if (!get_bn_from_bin(env, head, &dsa_y))
+        goto err;
+
+    if (!enif_is_empty_list(env,tail))
+        goto err;
+
+    if (!DSA_set0_pqg(dsa, dsa_p, dsa_q, dsa_g))
+        goto err;
+    /* dsa takes ownership on success */
+    dsa_p = NULL;
+    dsa_q = NULL;
+    dsa_g = NULL;
+
+    if (!DSA_set0_key(dsa, dsa_y, NULL))
+        goto err;
+    /* dsa takes ownership on success */
+    dsa_y = NULL;
+
+    return 1;
+
+ err:
+    if (dsa_p)
+        BN_free(dsa_p);
+    if (dsa_q)
+        BN_free(dsa_q);
+    if (dsa_g)
+        BN_free(dsa_g);
+    if (dsa_y)
+        BN_free(dsa_y);
+    return 0;
+}
diff --git a/lib/crypto/c_src/dss.h b/lib/crypto/c_src/dss.h
new file mode 100644
index 0000000000..3275657e98
--- /dev/null
+++ b/lib/crypto/c_src/dss.h
@@ -0,0 +1,29 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifndef E_DSS_H__
+#define E_DSS_H__ 1
+
+#include "common.h"
+
+int get_dss_private_key(ErlNifEnv* env, ERL_NIF_TERM key, DSA *dsa);
+int get_dss_public_key(ErlNifEnv* env, ERL_NIF_TERM key, DSA *dsa);
+
+#endif /* E_DSS_H__ */
diff --git a/lib/crypto/c_src/ec.c b/lib/crypto/c_src/ec.c
new file mode 100644
index 0000000000..51a3547694
--- /dev/null
+++ b/lib/crypto/c_src/ec.c
@@ -0,0 +1,414 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#include "ec.h"
+#include "bn.h"
+
+#ifdef HAVE_EC
+static EC_KEY* ec_key_new(ErlNifEnv* env, ERL_NIF_TERM curve_arg);
+static ERL_NIF_TERM point2term(ErlNifEnv* env,
+			       const EC_GROUP *group,
+			       const EC_POINT *point,
+			       point_conversion_form_t form);
+
+ERL_NIF_TERM make_badarg_maybe(ErlNifEnv* env)
+{
+    ERL_NIF_TERM reason;
+    if (enif_has_pending_exception(env, &reason))
+	return reason; /* dummy return value ignored */
+    else
+	return enif_make_badarg(env);
+}
+
+static EC_KEY* ec_key_new(ErlNifEnv* env, ERL_NIF_TERM curve_arg)
+{
+    EC_KEY *key = NULL;
+    int c_arity = -1;
+    const ERL_NIF_TERM* curve;
+    ErlNifBinary seed;
+    BIGNUM *p = NULL;
+    BIGNUM *a = NULL;
+    BIGNUM *b = NULL;
+    BIGNUM *bn_order = NULL;
+    BIGNUM *cofactor = NULL;
+    EC_GROUP *group = NULL;
+    EC_POINT *point = NULL;
+    int f_arity = -1;
+    const ERL_NIF_TERM *field;
+    int p_arity = -1;
+    const ERL_NIF_TERM *prime;
+    long field_bits;
+
+    /* {Field, Prime, Point, Order, CoFactor} = Curve */
+    if (!enif_get_tuple(env, curve_arg, &c_arity, &curve))
+        goto err;
+    if (c_arity != 5)
+        goto err;
+    if (!get_bn_from_bin(env, curve[3], &bn_order))
+        goto err;
+    if (curve[4] != atom_none) {
+        if (!get_bn_from_bin(env, curve[4], &cofactor))
+            goto err;
+    }
+
+    /* {A, B, Seed} = Prime */
+    if (!enif_get_tuple(env, curve[1], &p_arity, &prime))
+        goto err;
+    if (!get_bn_from_bin(env, prime[0], &a))
+        goto err;
+    if (!get_bn_from_bin(env, prime[1], &b))
+        goto err;
+
+    if (!enif_get_tuple(env, curve[0], &f_arity, &field))
+        goto err;
+
+    if (f_arity == 2 && field[0] == atom_prime_field) {
+        /* {prime_field, Prime} */
+        if (!get_bn_from_bin(env, field[1], &p))
+            goto err;
+        if (BN_is_negative(p))
+            goto err;
+        if (BN_is_zero(p))
+            goto err;
+
+        field_bits = BN_num_bits(p);
+        if (field_bits > OPENSSL_ECC_MAX_FIELD_BITS)
+            goto err;
+
+        /* create the EC_GROUP structure */
+        if ((group = EC_GROUP_new_curve_GFp(p, a, b, NULL)) == NULL)
+            goto err;
+
+    } else if (f_arity == 3 && field[0] == atom_characteristic_two_field) {
+#if defined(OPENSSL_NO_EC2M)
+        enif_raise_exception(env, atom_notsup);
+        goto err;
+#else
+        /* {characteristic_two_field, M, Basis} */
+        int b_arity = -1;
+        const ERL_NIF_TERM* basis;
+
+        if ((p = BN_new()) == NULL)
+            goto err;
+        if (!enif_get_long(env, field[1], &field_bits))
+            goto err;
+        if (field_bits > OPENSSL_ECC_MAX_FIELD_BITS || field_bits > INT_MAX)
+            goto err;
+
+        if (enif_get_tuple(env, field[2], &b_arity, &basis)) {
+            if (b_arity == 2) {
+                unsigned int k1;
+
+                if (basis[0] != atom_tpbasis)
+                    goto err;
+                if (!enif_get_uint(env, basis[1], &k1))
+                    goto err;
+
+                /* {tpbasis, k} = Basis */
+                if (field_bits <= k1 || k1 == 0 || k1 > INT_MAX)
+                    goto err;
+
+                /* create the polynomial */
+                if (!BN_set_bit(p, (int)field_bits))
+                    goto err;
+                if (!BN_set_bit(p, (int)k1))
+                    goto err;
+                if (!BN_set_bit(p, 0))
+                    goto err;
+
+            } else if (b_arity == 4) {
+                unsigned int k1, k2, k3;
+
+                if (basis[0] != atom_ppbasis)
+                    goto err;
+                if (!enif_get_uint(env, basis[1], &k1))
+                    goto err;
+                if (!enif_get_uint(env, basis[2], &k2))
+                    goto err;
+                if (!enif_get_uint(env, basis[3], &k3))
+                    goto err;
+
+                /* {ppbasis, k1, k2, k3} = Basis */
+                if (field_bits <= k3 || k3 <= k2 || k2 <= k1 || k1 == 0 || k3 > INT_MAX || k2 > INT_MAX || k1 > INT_MAX)
+                    goto err;
+
+                /* create the polynomial */
+                if (!BN_set_bit(p, (int)field_bits))
+                    goto err;
+                if (!BN_set_bit(p, (int)k1))
+                    goto err;
+                if (!BN_set_bit(p, (int)k2))
+                    goto err;
+                if (!BN_set_bit(p, (int)k3))
+                    goto err;
+                if (!BN_set_bit(p, 0))
+                    goto err;
+
+            } else
+                goto err;
+        } else if (field[2] == atom_onbasis) {
+            /* onbasis = Basis */
+            /* no parameters */
+            goto err;
+
+        } else
+            goto err;
+
+        if ((group = EC_GROUP_new_curve_GF2m(p, a, b, NULL)) == NULL)
+            goto err;
+#endif
+    } else
+        goto err;
+
+    if (enif_inspect_binary(env, prime[2], &seed)) {
+        if (!EC_GROUP_set_seed(group, seed.data, seed.size))
+            goto err;
+    }
+
+    if (!term2point(env, curve[2], group, &point))
+        goto err;
+
+    if (BN_is_negative(bn_order))
+        goto err;
+    if (BN_is_zero(bn_order))
+        goto err;
+    if (BN_num_bits(bn_order) > (int)field_bits + 1)
+        goto err;
+
+    if (!EC_GROUP_set_generator(group, point, bn_order, cofactor))
+        goto err;
+
+    EC_GROUP_set_asn1_flag(group, 0x0);
+
+    if ((key = EC_KEY_new()) == NULL)
+        goto err;
+
+    if (!EC_KEY_set_group(key, group))
+        goto err;
+
+    goto done;
+
+ err:
+    if (key)
+        EC_KEY_free(key);
+    key = NULL;
+
+ done:
+    /* some OpenSSL structures are mem-dup'ed into the key,
+       so we have to free our copies here */
+    if (bn_order)
+        BN_free(bn_order);
+    if (cofactor)
+        BN_free(cofactor);
+    if (a)
+        BN_free(a);
+    if (b)
+        BN_free(b);
+    if (p)
+        BN_free(p);
+    if (group)
+        EC_GROUP_free(group);
+    if (point)
+        EC_POINT_free(point);
+
+    return key;
+}
+
+static ERL_NIF_TERM point2term(ErlNifEnv* env,
+			       const EC_GROUP *group,
+			       const EC_POINT *point,
+			       point_conversion_form_t form)
+{
+    ERL_NIF_TERM ret;
+    size_t dlen;
+    ErlNifBinary bin;
+    int bin_alloc = 0;
+
+    if ((dlen = EC_POINT_point2oct(group, point, form, NULL, 0, NULL)) == 0)
+	return atom_undefined;
+
+    if (!enif_alloc_binary(dlen, &bin))
+        goto err;
+    bin_alloc = 1;
+
+    if (!EC_POINT_point2oct(group, point, form, bin.data, bin.size, NULL))
+        goto err;
+
+    ERL_VALGRIND_MAKE_MEM_DEFINED(bin.data, bin.size);
+
+    ret = enif_make_binary(env, &bin);
+    bin_alloc = 0;
+    goto done;
+
+ err:
+    if (bin_alloc)
+        enif_release_binary(&bin);
+    ret = enif_make_badarg(env);
+
+ done:
+    return ret;
+}
+
+int term2point(ErlNifEnv* env, ERL_NIF_TERM term, EC_GROUP *group, EC_POINT **pptr)
+{
+    ErlNifBinary bin;
+    EC_POINT *point = NULL;
+
+    if (!enif_inspect_binary(env, term, &bin))
+        goto err;
+
+    if ((point = EC_POINT_new(group)) == NULL)
+        goto err;
+
+    /* set the point conversion form */
+    EC_GROUP_set_point_conversion_form(group, (point_conversion_form_t)(bin.data[0] & ~0x01));
+
+    /* extract the ec point */
+    if (!EC_POINT_oct2point(group, point, bin.data, bin.size, NULL))
+        goto err;
+
+    *pptr = point;
+    return 1;
+
+ err:
+    if (point)
+        EC_POINT_free(point);
+    return 0;
+}
+
+int get_ec_key(ErlNifEnv* env,
+		      ERL_NIF_TERM curve, ERL_NIF_TERM priv, ERL_NIF_TERM pub,
+		      EC_KEY** res)
+{
+    EC_KEY *key = NULL;
+    BIGNUM *priv_key = NULL;
+    EC_POINT *pub_key = NULL;
+    EC_GROUP *group = NULL;
+
+    if (priv != atom_undefined) {
+        if (!get_bn_from_bin(env, priv, &priv_key))
+            goto err;
+    }
+    if (pub != atom_undefined) {
+        if (!enif_is_binary(env, pub))
+            goto err;
+    }
+
+    if ((key = ec_key_new(env, curve)) == NULL)
+        goto err;
+
+    if ((group = EC_GROUP_dup(EC_KEY_get0_group(key))) == NULL)
+        goto err;
+
+    if (term2point(env, pub, group, &pub_key)) {
+        if (!EC_KEY_set_public_key(key, pub_key))
+            goto err;
+    }
+
+    if (priv != atom_undefined && !BN_is_zero(priv_key)) {
+        if (!EC_KEY_set_private_key(key, priv_key))
+            goto err;
+
+        /* calculate public key (if necessary) */
+        if (EC_KEY_get0_public_key(key) == NULL) {
+            /* the public key was not included in the SEC1 private
+             * key => calculate the public key */
+            if ((pub_key = EC_POINT_new(group)) == NULL)
+                goto err;
+            if (!EC_POINT_copy(pub_key, EC_GROUP_get0_generator(group)))
+                goto err;
+            if (!EC_POINT_mul(group, pub_key, priv_key, NULL, NULL, NULL))
+                goto err;
+            if (!EC_KEY_set_public_key(key, pub_key))
+                goto err;
+        }
+    }
+    goto done;
+
+ err:
+    if (key)
+        EC_KEY_free(key);
+    key = NULL;
+
+ done:
+    /* some OpenSSL structures are mem-dup'ed into the key,
+       so we have to free our copies here */
+    if (priv_key)
+        BN_clear_free(priv_key);
+    if (group)
+        EC_GROUP_free(group);
+    if (pub_key)
+        EC_POINT_free(pub_key);
+
+    if (key == NULL)
+        return 0;
+
+    *res = key;
+    return 1;
+}
+
+#endif /* HAVE_EC */
+
+ERL_NIF_TERM ec_key_generate(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{
+#if defined(HAVE_EC)
+    EC_KEY *key = NULL;
+    const EC_GROUP *group;
+    const EC_POINT *public_key;
+    ERL_NIF_TERM priv_key;
+    ERL_NIF_TERM pub_key;
+    ERL_NIF_TERM ret;
+
+    if (!get_ec_key(env, argv[0], argv[1], atom_undefined, &key))
+        goto bad_arg;
+
+    if (argv[1] == atom_undefined) {
+	if (!EC_KEY_generate_key(key))
+            goto err;
+    }
+
+    group = EC_KEY_get0_group(key);
+    public_key = EC_KEY_get0_public_key(key);
+
+    if (group == NULL || public_key == NULL) {
+        pub_key = atom_undefined;
+
+    } else {
+        pub_key = point2term(env, group, public_key,
+                             EC_KEY_get_conv_form(key));
+    }
+
+    priv_key = bn2term(env, EC_KEY_get0_private_key(key));
+    ret = enif_make_tuple2(env, pub_key, priv_key);
+    goto done;
+
+ err:
+ bad_arg:
+    ret = make_badarg_maybe(env);
+
+ done:
+    if (key)
+        EC_KEY_free(key);
+    return ret;
+
+#else
+    return atom_notsup;
+#endif
+}
diff --git a/lib/crypto/c_src/ec.h b/lib/crypto/c_src/ec.h
new file mode 100644
index 0000000000..b7e1cc5a46
--- /dev/null
+++ b/lib/crypto/c_src/ec.h
@@ -0,0 +1,35 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifndef E_EC_H__
+#define E_EC_H__ 1
+
+#include "common.h"
+
+#if defined(HAVE_EC)
+int get_ec_key(ErlNifEnv* env, ERL_NIF_TERM curve, ERL_NIF_TERM priv, ERL_NIF_TERM pub,
+               EC_KEY** res);
+int term2point(ErlNifEnv* env, ERL_NIF_TERM term, EC_GROUP *group, EC_POINT **pptr);
+ERL_NIF_TERM make_badarg_maybe(ErlNifEnv* env);
+#endif
+
+ERL_NIF_TERM ec_key_generate(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+
+#endif /* E_EC_H__ */
diff --git a/lib/crypto/c_src/ecdh.c b/lib/crypto/c_src/ecdh.c
new file mode 100644
index 0000000000..9e3f460519
--- /dev/null
+++ b/lib/crypto/c_src/ecdh.c
@@ -0,0 +1,94 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#include "ecdh.h"
+#include "ec.h"
+
+/*
+  (_OthersPublicKey, _MyPrivateKey)
+  (_OthersPublicKey, _MyEC_Point)
+*/
+ERL_NIF_TERM ecdh_compute_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+/* (OtherPublicKey, Curve, My) */
+{
+#if defined(HAVE_EC)
+    ERL_NIF_TERM ret;
+    unsigned char *p;
+    EC_KEY* key = NULL;
+    int degree;
+    size_t field_size;
+    EC_GROUP *group = NULL;
+    const BIGNUM *priv_key;
+    EC_POINT *my_ecpoint = NULL;
+    EC_KEY *other_ecdh = NULL;
+
+    ASSERT(argc == 3);
+
+    if (!get_ec_key(env, argv[1], argv[2], atom_undefined, &key))
+        goto bad_arg;
+    if ((group = EC_GROUP_dup(EC_KEY_get0_group(key))) == NULL)
+        goto bad_arg;
+    priv_key = EC_KEY_get0_private_key(key);
+
+    if (!term2point(env, argv[0], group, &my_ecpoint)) {
+        goto err;
+    }
+
+    if ((other_ecdh = EC_KEY_new()) == NULL)
+        goto err;
+    if (!EC_KEY_set_group(other_ecdh, group))
+        goto err;
+    if (!EC_KEY_set_private_key(other_ecdh, priv_key))
+        goto err;
+
+    if ((degree = EC_GROUP_get_degree(group)) <= 0)
+        goto err;
+
+    field_size = (size_t)degree;
+    if ((p = enif_make_new_binary(env, (field_size+7)/8, &ret)) == NULL)
+        goto err;
+    if (ECDH_compute_key(p, (field_size+7)/8, my_ecpoint, other_ecdh, NULL) < 1)
+        goto err;
+
+    goto done;
+
+ bad_arg:
+    ret = make_badarg_maybe(env);
+    goto done;
+
+ err:
+    ret = enif_make_badarg(env);
+
+ done:
+    if (group)
+        EC_GROUP_free(group);
+    if (my_ecpoint)
+        EC_POINT_free(my_ecpoint);
+    if (other_ecdh)
+        EC_KEY_free(other_ecdh);
+    if (key)
+        EC_KEY_free(key);
+
+    return ret;
+
+#else
+    return atom_notsup;
+#endif
+}
diff --git a/lib/crypto/c_src/ecdh.h b/lib/crypto/c_src/ecdh.h
new file mode 100644
index 0000000000..5ed331e676
--- /dev/null
+++ b/lib/crypto/c_src/ecdh.h
@@ -0,0 +1,28 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifndef E_ECDH_H__
+#define E_ECDH_H__ 1
+
+#include "common.h"
+
+ERL_NIF_TERM ecdh_compute_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+
+#endif /* E_ECDH_H__ */
diff --git a/lib/crypto/c_src/eddsa.c b/lib/crypto/c_src/eddsa.c
new file mode 100644
index 0000000000..0c89f9f6db
--- /dev/null
+++ b/lib/crypto/c_src/eddsa.c
@@ -0,0 +1,63 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#include "eddsa.h"
+
+#ifdef HAVE_EDDSA
+int get_eddsa_key(ErlNifEnv* env, int public, ERL_NIF_TERM key, EVP_PKEY **pkey)
+{
+    /* key=[K] */
+    EVP_PKEY *result;
+    ERL_NIF_TERM head, tail, tail2, algo;
+    ErlNifBinary bin;
+    int type;
+
+    if (!enif_get_list_cell(env, key, &head, &tail))
+        goto err;
+    if (!enif_inspect_binary(env, head, &bin))
+        goto err;
+    if (!enif_get_list_cell(env, tail, &algo, &tail2))
+        goto err;
+    if (!enif_is_empty_list(env, tail2))
+        goto err;
+
+    if (algo == atom_ed25519) {
+        type = EVP_PKEY_ED25519;
+    } else if (algo == atom_ed448) {
+        type = EVP_PKEY_ED448;
+    } else {
+        goto err;
+    }
+
+    if (public)
+        result = EVP_PKEY_new_raw_public_key(type, NULL, bin.data, bin.size);
+    else 
+        result = EVP_PKEY_new_raw_private_key(type, NULL, bin.data, bin.size);
+
+    if (result == NULL)
+        goto err;
+
+    *pkey = result;
+    return 1;
+
+ err:
+    return 0;
+}
+#endif
diff --git a/lib/crypto/c_src/eddsa.h b/lib/crypto/c_src/eddsa.h
new file mode 100644
index 0000000000..4b30247cab
--- /dev/null
+++ b/lib/crypto/c_src/eddsa.h
@@ -0,0 +1,30 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifndef E_EDDSA_H__
+#define E_EDDSA_H__ 1
+
+#include "common.h"
+
+#ifdef HAVE_EDDSA
+int get_eddsa_key(ErlNifEnv* env, int public, ERL_NIF_TERM key, EVP_PKEY **pkey);
+#endif
+
+#endif /* E_EDDSA_H__ */
diff --git a/lib/crypto/c_src/engine.c b/lib/crypto/c_src/engine.c
new file mode 100644
index 0000000000..ea5d9a588f
--- /dev/null
+++ b/lib/crypto/c_src/engine.c
@@ -0,0 +1,840 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#include "engine.h"
+
+#ifdef HAS_ENGINE_SUPPORT
+struct engine_ctx {
+    ENGINE *engine;
+    char *id;
+};
+
+#define ERROR_Term(Env, ReasonTerm) enif_make_tuple2((Env), atom_error, (ReasonTerm))
+#define ERROR_Atom(Env, ReasonString) ERROR_Term((Env), enif_make_atom((Env),(ReasonString)))
+
+static ErlNifResourceType* engine_ctx_rtype;
+
+static int get_engine_load_cmd_list(ErlNifEnv* env, const ERL_NIF_TERM term, char **cmds, int i);
+static int zero_terminate(ErlNifBinary bin, char **buf);
+
+static void engine_ctx_dtor(ErlNifEnv* env, struct engine_ctx* ctx) {
+    if (ctx == NULL)
+        return;
+
+    PRINTF_ERR0("engine_ctx_dtor");
+    if(ctx->id) {
+        PRINTF_ERR1("  non empty ctx->id=%s", ctx->id);
+        enif_free(ctx->id);
+    } else
+         PRINTF_ERR0("  empty ctx->id=NULL");
+}
+
+int get_engine_and_key_id(ErlNifEnv *env, ERL_NIF_TERM key, char ** id, ENGINE **e)
+{
+    ERL_NIF_TERM engine_res, key_id_term;
+    struct engine_ctx *ctx;
+    ErlNifBinary key_id_bin;
+
+    if (!enif_get_map_value(env, key, atom_engine, &engine_res))
+        goto err;
+    if (!enif_get_resource(env, engine_res, engine_ctx_rtype, (void**)&ctx))
+        goto err;
+    if (!enif_get_map_value(env, key, atom_key_id, &key_id_term))
+        goto err;
+    if (!enif_inspect_binary(env, key_id_term, &key_id_bin))
+        goto err;
+
+    *e = ctx->engine;
+    return zero_terminate(key_id_bin, id);
+
+ err:
+    return 0;
+}
+
+char *get_key_password(ErlNifEnv *env, ERL_NIF_TERM key) {
+    ERL_NIF_TERM tmp_term;
+    ErlNifBinary pwd_bin;
+    char *pwd = NULL;
+
+    if (!enif_get_map_value(env, key, atom_password, &tmp_term))
+        goto err;
+    if (!enif_inspect_binary(env, tmp_term, &pwd_bin))
+        goto err;
+    if (!zero_terminate(pwd_bin, &pwd))
+        goto err;
+
+    return pwd;
+
+ err:
+    return NULL;
+}
+
+static int zero_terminate(ErlNifBinary bin, char **buf) {
+    if ((*buf = enif_alloc(bin.size + 1)) == NULL)
+        goto err;
+
+    memcpy(*buf, bin.data, bin.size);
+    *(*buf + bin.size) = 0;
+
+    return 1;
+
+ err:
+    return 0;
+}
+#endif /* HAS_ENGINE_SUPPORT */
+
+int init_engine_ctx(ErlNifEnv *env) {
+#ifdef HAS_ENGINE_SUPPORT
+    engine_ctx_rtype = enif_open_resource_type(env, NULL, "ENGINE_CTX",
+                                                   (ErlNifResourceDtor*) engine_ctx_dtor,
+                                                   ERL_NIF_RT_CREATE|ERL_NIF_RT_TAKEOVER,
+                                                   NULL);
+    if (engine_ctx_rtype == NULL) {
+        PRINTF_ERR0("CRYPTO: Could not open resource type 'ENGINE_CTX'");
+        return 0;
+    }
+#endif
+
+    return 1;
+}
+
+ERL_NIF_TERM engine_by_id_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (EngineId) */
+#ifdef HAS_ENGINE_SUPPORT
+    ERL_NIF_TERM ret, result;
+    ErlNifBinary engine_id_bin;
+    char *engine_id = NULL;
+    ENGINE *engine;
+    struct engine_ctx *ctx = NULL;
+
+    // Get Engine Id
+    ASSERT(argc == 1);
+
+    if (!enif_inspect_binary(env, argv[0], &engine_id_bin))
+        goto bad_arg;
+
+    if ((engine_id = enif_alloc(engine_id_bin.size+1)) == NULL)
+        goto err;
+    (void) memcpy(engine_id, engine_id_bin.data, engine_id_bin.size);
+    engine_id[engine_id_bin.size] = '\0';
+
+    if ((engine = ENGINE_by_id(engine_id)) == NULL) {
+        PRINTF_ERR0("engine_by_id_nif Leaved: {error, bad_engine_id}");
+        ret = ERROR_Atom(env, "bad_engine_id");
+        goto done;
+    }
+
+    if ((ctx = enif_alloc_resource(engine_ctx_rtype, sizeof(struct engine_ctx))) == NULL)
+        goto err;
+    ctx->engine = engine;
+    ctx->id = engine_id;
+    /* ctx now owns engine_id */
+    engine_id = NULL;
+
+    result = enif_make_resource(env, ctx);
+    ret = enif_make_tuple2(env, atom_ok, result);
+    goto done;
+
+ bad_arg:
+ err:
+    ret = enif_make_badarg(env);
+
+ done:
+    if (engine_id)
+        enif_free(engine_id);
+    if (ctx)
+        enif_release_resource(ctx);
+    return ret;
+
+#else
+    return atom_notsup;
+#endif
+}
+
+ERL_NIF_TERM engine_init_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Engine) */
+#ifdef HAS_ENGINE_SUPPORT
+    struct engine_ctx *ctx;
+
+    // Get Engine
+    ASSERT(argc == 1);
+
+    if (!enif_get_resource(env, argv[0], engine_ctx_rtype, (void**)&ctx))
+        goto bad_arg;
+
+    if (!ENGINE_init(ctx->engine))
+        return ERROR_Atom(env, "engine_init_failed");
+
+    return atom_ok;
+
+ bad_arg:
+    return enif_make_badarg(env);
+
+#else
+    return atom_notsup;
+#endif
+}
+
+ERL_NIF_TERM engine_free_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Engine) */
+#ifdef HAS_ENGINE_SUPPORT
+    struct engine_ctx *ctx;
+
+    // Get Engine
+    ASSERT(argc == 1);
+
+    if (!enif_get_resource(env, argv[0], engine_ctx_rtype, (void**)&ctx))
+        goto bad_arg;
+
+    if (!ENGINE_free(ctx->engine))
+        goto err;
+    return atom_ok;
+
+ bad_arg:
+ err:
+    return enif_make_badarg(env);
+#else
+    return atom_notsup;
+#endif
+}
+
+ERL_NIF_TERM engine_finish_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Engine) */
+#ifdef HAS_ENGINE_SUPPORT
+    struct engine_ctx *ctx;
+
+    // Get Engine
+    ASSERT(argc == 1);
+
+    if (!enif_get_resource(env, argv[0], engine_ctx_rtype, (void**)&ctx))
+        goto bad_arg;
+
+    if (!ENGINE_finish(ctx->engine))
+        goto err;
+    return atom_ok;
+
+ bad_arg:
+ err:
+    return enif_make_badarg(env);
+
+#else
+    return atom_notsup;
+#endif
+}
+
+ERL_NIF_TERM engine_load_dynamic_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* () */
+#ifdef HAS_ENGINE_SUPPORT
+    ASSERT(argc == 0);
+
+    ENGINE_load_dynamic();
+    return atom_ok;
+#else
+    return atom_notsup;
+#endif
+}
+
+ERL_NIF_TERM engine_ctrl_cmd_strings_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Engine, Commands, Optional) */
+#ifdef HAS_ENGINE_SUPPORT
+    ERL_NIF_TERM ret;
+    unsigned int cmds_len = 0;
+    char **cmds = NULL;
+    struct engine_ctx *ctx;
+    unsigned int i;
+    int optional = 0;
+    int cmds_loaded = 0;
+
+    // Get Engine
+    ASSERT(argc == 3);
+
+    if (!enif_get_resource(env, argv[0], engine_ctx_rtype, (void**)&ctx))
+        goto bad_arg;
+
+    PRINTF_ERR1("Engine Id:  %s\r\n", ENGINE_get_id(ctx->engine));
+    // Get Command List
+    if (!enif_get_list_length(env, argv[1], &cmds_len))
+        goto bad_arg;
+
+    if (cmds_len > (UINT_MAX / 2) - 1)
+        goto err;
+    cmds_len *= 2; // Key-Value list from erlang
+
+    if ((size_t)cmds_len + 1 > SIZE_MAX / sizeof(char*))
+        goto err;
+    if ((cmds = enif_alloc((cmds_len + 1) * sizeof(char*))) == NULL)
+        goto err;
+    if (get_engine_load_cmd_list(env, argv[1], cmds, 0))
+        goto err;
+    cmds_loaded = 1;
+    if (!enif_get_int(env, argv[2], &optional))
+        goto err;
+
+    for(i = 0; i < cmds_len; i+=2) {
+        PRINTF_ERR2("Cmd:  %s:%s\r\n",
+                   cmds[i] ? cmds[i] : "(NULL)",
+                   cmds[i+1] ? cmds[i+1] : "(NULL)");
+        if(!ENGINE_ctrl_cmd_string(ctx->engine, cmds[i], cmds[i+1], optional)) {
+            PRINTF_ERR2("Command failed:  %s:%s\r\n",
+                        cmds[i] ? cmds[i] : "(NULL)",
+                        cmds[i+1] ? cmds[i+1] : "(NULL)");
+            goto cmd_failed;
+        }
+    }
+    ret = atom_ok;
+    goto done;
+
+ bad_arg:
+ err:
+    ret = enif_make_badarg(env);
+    goto done;
+
+ cmd_failed:
+    ret = ERROR_Atom(env, "ctrl_cmd_failed");
+
+ done:
+    if (cmds_loaded) {
+        for (i = 0; cmds != NULL && cmds[i] != NULL; i++)
+            enif_free(cmds[i]);
+    }
+
+    if (cmds != NULL)
+        enif_free(cmds);
+
+    return ret;
+
+#else
+    return atom_notsup;
+#endif
+}
+
+ERL_NIF_TERM engine_add_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Engine) */
+#ifdef HAS_ENGINE_SUPPORT
+    struct engine_ctx *ctx;
+
+    // Get Engine
+    ASSERT(argc == 1);
+
+    if (!enif_get_resource(env, argv[0], engine_ctx_rtype, (void**)&ctx))
+        goto bad_arg;
+
+    if (!ENGINE_add(ctx->engine))
+        goto failed;
+
+    return atom_ok;
+
+ bad_arg:
+    return enif_make_badarg(env);
+
+ failed:
+    return ERROR_Atom(env, "add_engine_failed");
+
+#else
+    return atom_notsup;
+#endif
+}
+
+ERL_NIF_TERM engine_remove_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Engine) */
+#ifdef HAS_ENGINE_SUPPORT
+    struct engine_ctx *ctx;
+
+    // Get Engine
+    ASSERT(argc == 1);
+
+    if (!enif_get_resource(env, argv[0], engine_ctx_rtype, (void**)&ctx))
+        goto bad_arg;
+
+    if (!ENGINE_remove(ctx->engine))
+        goto failed;
+
+    return atom_ok;
+
+ bad_arg:
+    return enif_make_badarg(env);
+
+ failed:
+    return ERROR_Atom(env, "remove_engine_failed");
+#else
+    return atom_notsup;
+#endif
+}
+
+ERL_NIF_TERM engine_register_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Engine, EngineMethod) */
+#ifdef HAS_ENGINE_SUPPORT
+    struct engine_ctx *ctx;
+    unsigned int method;
+
+    // Get Engine
+    ASSERT(argc == 2);
+
+    if (!enif_get_resource(env, argv[0], engine_ctx_rtype, (void**)&ctx))
+        goto bad_arg;
+    if (!enif_get_uint(env, argv[1], &method))
+        goto bad_arg;
+
+    switch(method)
+    {
+#ifdef ENGINE_METHOD_RSA
+    case ENGINE_METHOD_RSA:
+        if (!ENGINE_register_RSA(ctx->engine))
+            goto failed;
+        break;
+#endif
+#ifdef ENGINE_METHOD_DSA
+    case ENGINE_METHOD_DSA:
+        if (!ENGINE_register_DSA(ctx->engine))
+            goto failed;
+        break;
+#endif
+#ifdef ENGINE_METHOD_DH
+    case ENGINE_METHOD_DH:
+        if (!ENGINE_register_DH(ctx->engine))
+            goto failed;
+        break;
+#endif
+#ifdef ENGINE_METHOD_RAND
+    case ENGINE_METHOD_RAND:
+        if (!ENGINE_register_RAND(ctx->engine))
+            goto failed;
+        break;
+#endif
+#ifdef ENGINE_METHOD_ECDH
+    case ENGINE_METHOD_ECDH:
+        if (!ENGINE_register_ECDH(ctx->engine))
+            goto failed;
+        break;
+#endif
+#ifdef ENGINE_METHOD_ECDSA
+    case ENGINE_METHOD_ECDSA:
+        if (!ENGINE_register_ECDSA(ctx->engine))
+            goto failed;
+        break;
+#endif
+#ifdef ENGINE_METHOD_STORE
+    case ENGINE_METHOD_STORE:
+        if (!ENGINE_register_STORE(ctx->engine))
+            goto failed;
+        break;
+#endif
+#ifdef ENGINE_METHOD_CIPHERS
+    case ENGINE_METHOD_CIPHERS:
+        if (!ENGINE_register_ciphers(ctx->engine))
+            goto failed;
+        break;
+#endif
+#ifdef ENGINE_METHOD_DIGESTS
+    case ENGINE_METHOD_DIGESTS:
+        if (!ENGINE_register_digests(ctx->engine))
+            goto failed;
+        break;
+#endif
+#ifdef ENGINE_METHOD_PKEY_METHS
+    case ENGINE_METHOD_PKEY_METHS:
+        if (!ENGINE_register_pkey_meths(ctx->engine))
+            goto failed;
+        break;
+#endif
+#ifdef ENGINE_METHOD_PKEY_ASN1_METHS
+    case ENGINE_METHOD_PKEY_ASN1_METHS:
+        if (!ENGINE_register_pkey_asn1_meths(ctx->engine))
+            goto failed;
+        break;
+#endif
+#ifdef ENGINE_METHOD_EC
+    case ENGINE_METHOD_EC:
+        if (!ENGINE_register_EC(ctx->engine))
+            goto failed;
+        break;
+#endif
+    default:
+        return ERROR_Atom(env, "engine_method_not_supported");
+    }
+
+    return atom_ok;
+
+ bad_arg:
+    return enif_make_badarg(env);
+
+ failed:
+    return ERROR_Atom(env, "register_engine_failed");
+
+#else
+    return atom_notsup;
+#endif
+}
+
+ERL_NIF_TERM engine_unregister_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Engine, EngineMethod) */
+#ifdef HAS_ENGINE_SUPPORT
+    struct engine_ctx *ctx;
+    unsigned int method;
+
+    // Get Engine
+    ASSERT(argc == 2);
+
+    if (!enif_get_resource(env, argv[0], engine_ctx_rtype, (void**)&ctx))
+        goto bad_arg;
+    if (!enif_get_uint(env, argv[1], &method))
+        goto bad_arg;
+
+    switch(method)
+    {
+#ifdef ENGINE_METHOD_RSA
+    case ENGINE_METHOD_RSA:
+        ENGINE_unregister_RSA(ctx->engine);
+        break;
+#endif
+#ifdef ENGINE_METHOD_DSA
+    case ENGINE_METHOD_DSA:
+        ENGINE_unregister_DSA(ctx->engine);
+        break;
+#endif
+#ifdef ENGINE_METHOD_DH
+    case ENGINE_METHOD_DH:
+        ENGINE_unregister_DH(ctx->engine);
+        break;
+#endif
+#ifdef ENGINE_METHOD_RAND
+    case ENGINE_METHOD_RAND:
+        ENGINE_unregister_RAND(ctx->engine);
+        break;
+#endif
+#ifdef ENGINE_METHOD_ECDH
+    case ENGINE_METHOD_ECDH:
+        ENGINE_unregister_ECDH(ctx->engine);
+        break;
+#endif
+#ifdef ENGINE_METHOD_ECDSA
+    case ENGINE_METHOD_ECDSA:
+        ENGINE_unregister_ECDSA(ctx->engine);
+        break;
+#endif
+#ifdef ENGINE_METHOD_STORE
+    case ENGINE_METHOD_STORE:
+        ENGINE_unregister_STORE(ctx->engine);
+        break;
+#endif
+#ifdef ENGINE_METHOD_CIPHERS
+    case ENGINE_METHOD_CIPHERS:
+        ENGINE_unregister_ciphers(ctx->engine);
+        break;
+#endif
+#ifdef ENGINE_METHOD_DIGESTS
+    case ENGINE_METHOD_DIGESTS:
+        ENGINE_unregister_digests(ctx->engine);
+        break;
+#endif
+#ifdef ENGINE_METHOD_PKEY_METHS
+    case ENGINE_METHOD_PKEY_METHS:
+        ENGINE_unregister_pkey_meths(ctx->engine);
+        break;
+#endif
+#ifdef ENGINE_METHOD_PKEY_ASN1_METHS
+    case ENGINE_METHOD_PKEY_ASN1_METHS:
+        ENGINE_unregister_pkey_asn1_meths(ctx->engine);
+        break;
+#endif
+#ifdef ENGINE_METHOD_EC
+    case ENGINE_METHOD_EC:
+        ENGINE_unregister_EC(ctx->engine);
+        break;
+#endif
+    default:
+        break;
+    }
+
+    return atom_ok;
+
+ bad_arg:
+    return enif_make_badarg(env);
+
+#else
+    return atom_notsup;
+#endif
+}
+
+ERL_NIF_TERM engine_get_first_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* () */
+#ifdef HAS_ENGINE_SUPPORT
+    ERL_NIF_TERM ret, result;
+    ENGINE *engine;
+    ErlNifBinary engine_bin;
+    struct engine_ctx *ctx = NULL;
+
+    ASSERT(argc == 0);
+
+    if ((engine = ENGINE_get_first()) == NULL) {
+        if (!enif_alloc_binary(0, &engine_bin))
+            goto err;
+        engine_bin.size = 0;
+        return enif_make_tuple2(env, atom_ok, enif_make_binary(env, &engine_bin));
+    }
+
+    if ((ctx = enif_alloc_resource(engine_ctx_rtype, sizeof(struct engine_ctx))) == NULL)
+        goto err;
+    ctx->engine = engine;
+    ctx->id = NULL;
+
+    result = enif_make_resource(env, ctx);
+    ret = enif_make_tuple2(env, atom_ok, result);
+    goto done;
+
+ err:
+    ret = enif_make_badarg(env);
+
+ done:
+    if (ctx)
+        enif_release_resource(ctx);
+    return ret;
+
+#else
+    return atom_notsup;
+#endif
+}
+
+ERL_NIF_TERM engine_get_next_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Engine) */
+#ifdef HAS_ENGINE_SUPPORT
+    ERL_NIF_TERM ret, result;
+    ENGINE *engine;
+    ErlNifBinary engine_bin;
+    struct engine_ctx *ctx, *next_ctx = NULL;
+
+    // Get Engine
+    ASSERT(argc == 1);
+
+    if (!enif_get_resource(env, argv[0], engine_ctx_rtype, (void**)&ctx))
+        goto bad_arg;
+
+    if ((engine = ENGINE_get_next(ctx->engine)) == NULL) {
+        if (!enif_alloc_binary(0, &engine_bin))
+            goto err;
+        engine_bin.size = 0;
+        return enif_make_tuple2(env, atom_ok, enif_make_binary(env, &engine_bin));
+    }
+
+    if ((next_ctx = enif_alloc_resource(engine_ctx_rtype, sizeof(struct engine_ctx))) == NULL)
+        goto err;
+    next_ctx->engine = engine;
+    next_ctx->id = NULL;
+
+    result = enif_make_resource(env, next_ctx);
+    ret = enif_make_tuple2(env, atom_ok, result);
+    goto done;
+
+ bad_arg:
+ err:
+    ret = enif_make_badarg(env);
+
+ done:
+    if (next_ctx)
+        enif_release_resource(next_ctx);
+    return ret;
+
+#else
+    return atom_notsup;
+#endif
+}
+
+ERL_NIF_TERM engine_get_id_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Engine) */
+#ifdef HAS_ENGINE_SUPPORT
+    ErlNifBinary engine_id_bin;
+    const char *engine_id;
+    size_t size;
+    struct engine_ctx *ctx = NULL;
+
+    // Get Engine
+    ASSERT(argc == 1);
+
+    if (!enif_get_resource(env, argv[0], engine_ctx_rtype, (void**)&ctx))
+        goto bad_arg;
+
+    if ((engine_id = ENGINE_get_id(ctx->engine)) == NULL) {
+        if (!enif_alloc_binary(0, &engine_id_bin))
+            goto err;
+        engine_id_bin.size = 0;
+        return enif_make_binary(env, &engine_id_bin);
+    }
+
+    size = strlen(engine_id);
+    if (!enif_alloc_binary(size, &engine_id_bin))
+        goto err;
+    engine_id_bin.size = size;
+    memcpy(engine_id_bin.data, engine_id, size);
+
+    return enif_make_binary(env, &engine_id_bin);
+
+ bad_arg:
+ err:
+    return enif_make_badarg(env);
+
+#else
+    return atom_notsup;
+#endif
+}
+
+ERL_NIF_TERM engine_get_name_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Engine) */
+#ifdef HAS_ENGINE_SUPPORT
+    ErlNifBinary engine_name_bin;
+    const char *engine_name;
+    size_t size;
+    struct engine_ctx *ctx;
+
+    // Get Engine
+    ASSERT(argc == 1);
+
+    if (!enif_get_resource(env, argv[0], engine_ctx_rtype, (void**)&ctx))
+        goto bad_arg;
+
+    if ((engine_name = ENGINE_get_name(ctx->engine)) == NULL) {
+        if (!enif_alloc_binary(0, &engine_name_bin))
+            goto err;
+        engine_name_bin.size = 0;
+        return enif_make_binary(env, &engine_name_bin);
+    }
+
+    size = strlen(engine_name);
+    if (!enif_alloc_binary(size, &engine_name_bin))
+        goto err;
+    engine_name_bin.size = size;
+    memcpy(engine_name_bin.data, engine_name, size);
+
+    return enif_make_binary(env, &engine_name_bin);
+
+ bad_arg:
+ err:
+    return enif_make_badarg(env);
+
+#else
+    return atom_notsup;
+#endif
+}
+
+#ifdef HAS_ENGINE_SUPPORT
+static int get_engine_load_cmd_list(ErlNifEnv* env, const ERL_NIF_TERM term, char **cmds, int i)
+{
+    ERL_NIF_TERM head, tail;
+    const ERL_NIF_TERM *tmp_tuple;
+    ErlNifBinary tmpbin;
+    int arity;
+    char *tuple1 = NULL, *tuple2 = NULL;
+
+    if (enif_is_empty_list(env, term)) {
+        cmds[i] = NULL;
+        return 0;
+    }
+
+    if (!enif_get_list_cell(env, term, &head, &tail))
+        goto err;
+    if (!enif_get_tuple(env, head, &arity, &tmp_tuple))
+        goto err;
+    if (arity != 2)
+        goto err;
+    if (!enif_inspect_binary(env, tmp_tuple[0], &tmpbin))
+        goto err;
+
+    if ((tuple1 = enif_alloc(tmpbin.size + 1)) == NULL)
+        goto err;
+
+    (void) memcpy(tuple1, tmpbin.data, tmpbin.size);
+    tuple1[tmpbin.size] = '\0';
+    cmds[i] = tuple1;
+    i++;
+
+    if (!enif_inspect_binary(env, tmp_tuple[1], &tmpbin))
+        goto err;
+
+    if (tmpbin.size == 0) {
+        cmds[i] = NULL;
+    } else {
+        if ((tuple2 = enif_alloc(tmpbin.size + 1)) == NULL)
+            goto err;
+        (void) memcpy(tuple2, tmpbin.data, tmpbin.size);
+        tuple2[tmpbin.size] = '\0';
+        cmds[i] = tuple2;
+    }
+    i++;
+    return get_engine_load_cmd_list(env, tail, cmds, i);
+
+ err:
+    if (tuple1 != NULL) {
+        i--;
+        enif_free(tuple1);
+    }
+    cmds[i] = NULL;
+    return -1;
+}
+#endif /* HAS_ENGINE_SUPPORT */
+
+ERL_NIF_TERM engine_get_all_methods_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* () */
+#ifdef HAS_ENGINE_SUPPORT
+    ERL_NIF_TERM method_array[12];
+    unsigned int i = 0;
+
+    ASSERT(argc == 0);
+
+#ifdef ENGINE_METHOD_RSA
+    method_array[i++] = atom_engine_method_rsa;
+#endif
+#ifdef ENGINE_METHOD_DSA
+    method_array[i++] = atom_engine_method_dsa;
+#endif
+#ifdef ENGINE_METHOD_DH
+    method_array[i++] = atom_engine_method_dh;
+#endif
+#ifdef ENGINE_METHOD_RAND
+    method_array[i++] = atom_engine_method_rand;
+#endif
+#ifdef ENGINE_METHOD_ECDH
+    method_array[i++] = atom_engine_method_ecdh;
+#endif
+#ifdef ENGINE_METHOD_ECDSA
+    method_array[i++] = atom_engine_method_ecdsa;
+#endif
+#ifdef ENGINE_METHOD_STORE
+    method_array[i++] = atom_engine_method_store;
+#endif
+#ifdef ENGINE_METHOD_CIPHERS
+    method_array[i++] = atom_engine_method_ciphers;
+#endif
+#ifdef ENGINE_METHOD_DIGESTS
+    method_array[i++] = atom_engine_method_digests;
+#endif
+#ifdef ENGINE_METHOD_PKEY_METHS
+    method_array[i++] = atom_engine_method_pkey_meths;
+#endif
+#ifdef ENGINE_METHOD_PKEY_ASN1_METHS
+    method_array[i++] = atom_engine_method_pkey_asn1_meths;
+#endif
+#ifdef ENGINE_METHOD_EC
+    method_array[i++] = atom_engine_method_ec;
+#endif
+
+    return enif_make_list_from_array(env, method_array, i);
+#else
+    return atom_notsup;
+#endif
+}
diff --git a/lib/crypto/c_src/engine.h b/lib/crypto/c_src/engine.h
new file mode 100644
index 0000000000..4a2eed9672
--- /dev/null
+++ b/lib/crypto/c_src/engine.h
@@ -0,0 +1,49 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifndef E_ENGINE_H__
+#define E_ENGINE_H__ 1
+
+#include "common.h"
+
+#ifdef HAS_ENGINE_SUPPORT
+int get_engine_and_key_id(ErlNifEnv *env, ERL_NIF_TERM key, char ** id, ENGINE **e);
+char *get_key_password(ErlNifEnv *env, ERL_NIF_TERM key);
+#endif /* HAS_ENGINE_SUPPORT */
+
+int init_engine_ctx(ErlNifEnv *env);
+
+ERL_NIF_TERM engine_by_id_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM engine_init_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM engine_finish_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM engine_free_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM engine_load_dynamic_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM engine_ctrl_cmd_strings_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM engine_register_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM engine_unregister_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM engine_add_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM engine_remove_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM engine_get_first_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM engine_get_next_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM engine_get_id_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM engine_get_name_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM engine_get_all_methods_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+
+#endif /* E_ENGINE_H__ */
diff --git a/lib/crypto/c_src/evp.c b/lib/crypto/c_src/evp.c
new file mode 100644
index 0000000000..3bf66bfffe
--- /dev/null
+++ b/lib/crypto/c_src/evp.c
@@ -0,0 +1,164 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#include "evp.h"
+
+ERL_NIF_TERM evp_compute_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+    /*    (Curve, PeerBin, MyBin) */
+{
+#ifdef HAVE_ED_CURVE_DH
+    ERL_NIF_TERM ret;
+    int type;
+    EVP_PKEY_CTX *ctx = NULL;
+    ErlNifBinary peer_bin, my_bin, key_bin;
+    EVP_PKEY *peer_key = NULL, *my_key = NULL;
+    size_t max_size;
+    int key_bin_alloc = 0;
+
+    ASSERT(argc == 3);
+
+    if (argv[0] == atom_x25519)
+        type = EVP_PKEY_X25519;
+    else if (argv[0] == atom_x448)
+        type = EVP_PKEY_X448;
+    else
+        goto bad_arg;
+
+    if (!enif_inspect_binary(env, argv[1], &peer_bin))
+        goto bad_arg;
+    if (!enif_inspect_binary(env, argv[2], &my_bin))
+        goto bad_arg;
+
+    if ((my_key = EVP_PKEY_new_raw_private_key(type, NULL, my_bin.data, my_bin.size)) == NULL)
+        goto err;
+    if ((ctx = EVP_PKEY_CTX_new(my_key, NULL)) == NULL)
+        goto err;
+
+    if (EVP_PKEY_derive_init(ctx) != 1)
+        goto err;
+
+    if ((peer_key = EVP_PKEY_new_raw_public_key(type, NULL, peer_bin.data, peer_bin.size)) == NULL)
+        goto err;
+    if (EVP_PKEY_derive_set_peer(ctx, peer_key) != 1)
+        goto err;
+
+    if (EVP_PKEY_derive(ctx, NULL, &max_size) != 1)
+        goto err;
+
+    if (!enif_alloc_binary(max_size, &key_bin))
+        goto err;
+    key_bin_alloc = 1;
+    if (EVP_PKEY_derive(ctx, key_bin.data, &key_bin.size) != 1)
+        goto err;
+
+    if (key_bin.size < max_size) {
+        if (!enif_realloc_binary(&key_bin, (size_t)key_bin.size))
+            goto err;
+    }
+
+    ret = enif_make_binary(env, &key_bin);
+    key_bin_alloc = 0;
+    goto done;
+
+ bad_arg:
+ err:
+    if (key_bin_alloc)
+        enif_release_binary(&key_bin);
+    ret = enif_make_badarg(env);
+
+ done:
+    if (my_key)
+        EVP_PKEY_free(my_key);
+    if (peer_key)
+        EVP_PKEY_free(peer_key);
+    if (ctx)
+        EVP_PKEY_CTX_free(ctx);
+
+    return ret;
+
+#else
+    return atom_notsup;
+#endif
+}
+
+ERL_NIF_TERM evp_generate_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+/* (Curve) */
+{
+#ifdef HAVE_ED_CURVE_DH
+    int type;
+    EVP_PKEY_CTX *ctx = NULL;
+    EVP_PKEY *pkey = NULL;
+    ERL_NIF_TERM ret_pub, ret_prv, ret;
+    size_t key_len;
+    unsigned char *out_pub = NULL, *out_priv = NULL;
+
+    ASSERT(argc == 1);
+
+    if (argv[0] == atom_x25519)
+        type = EVP_PKEY_X25519;
+    else if (argv[0] == atom_x448)
+        type = EVP_PKEY_X448;
+    else
+        goto bad_arg;
+
+    if ((ctx = EVP_PKEY_CTX_new_id(type, NULL)) == NULL)
+        goto bad_arg;
+
+    if (EVP_PKEY_keygen_init(ctx) != 1)
+        goto err;
+    if (EVP_PKEY_keygen(ctx, &pkey) != 1)
+        goto err;
+
+    if (EVP_PKEY_get_raw_public_key(pkey, NULL, &key_len) != 1)
+        goto err;
+    if ((out_pub = enif_make_new_binary(env, key_len, &ret_pub)) == NULL)
+        goto err;
+    if (EVP_PKEY_get_raw_public_key(pkey, out_pub, &key_len) != 1)
+        goto err;
+
+    if (EVP_PKEY_get_raw_private_key(pkey, NULL, &key_len) != 1)
+        goto err;
+    if ((out_priv = enif_make_new_binary(env, key_len, &ret_prv)) == NULL)
+        goto err;
+    if (EVP_PKEY_get_raw_private_key(pkey, out_priv, &key_len) != 1)
+        goto err;
+
+    ret = enif_make_tuple2(env, ret_pub, ret_prv);
+    goto done;
+
+ bad_arg:
+    ret = enif_make_badarg(env);
+    goto done;
+
+ err:
+    ret = atom_error;
+
+ done:
+    if (pkey)
+        EVP_PKEY_free(pkey);
+    if (ctx)
+        EVP_PKEY_CTX_free(ctx);
+    return ret;
+
+#else
+    return atom_notsup;
+#endif
+}
+
diff --git a/lib/crypto/c_src/evp.h b/lib/crypto/c_src/evp.h
new file mode 100644
index 0000000000..d767260262
--- /dev/null
+++ b/lib/crypto/c_src/evp.h
@@ -0,0 +1,29 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifndef E_EVP_H__
+#define E_EVP_H__ 1
+
+#include "common.h"
+
+ERL_NIF_TERM evp_compute_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM evp_generate_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+
+#endif /* E_EVP_H__ */
diff --git a/lib/crypto/c_src/evp_compat.h b/lib/crypto/c_src/evp_compat.h
new file mode 100644
index 0000000000..dc94a61d8e
--- /dev/null
+++ b/lib/crypto/c_src/evp_compat.h
@@ -0,0 +1,210 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifndef E_EVP_COMPAT_H__
+#define E_EVP_COMPAT_H__ 1
+
+/*
+ * In OpenSSL 1.1.0, most structs are opaque. That means that
+ * the structs cannot be allocated as automatic variables on the
+ * C stack (because the size is unknown) and that it is necessary
+ * to use access functions.
+ *
+ * For backward compatibility to previous versions of OpenSSL, define
+ * on our versions of the new functions defined in 1.1.0 here, so that
+ * we don't have to sprinkle ifdefs throughout the code.
+ */
+
+static INLINE HMAC_CTX *HMAC_CTX_new(void);
+static INLINE void HMAC_CTX_free(HMAC_CTX *ctx);
+
+static INLINE HMAC_CTX *HMAC_CTX_new()
+{
+    HMAC_CTX *ctx;
+
+    if ((ctx = CRYPTO_malloc(sizeof(HMAC_CTX), __FILE__, __LINE__)) == NULL)
+        return NULL;
+
+    HMAC_CTX_init(ctx);
+    return ctx;
+}
+
+static INLINE void HMAC_CTX_free(HMAC_CTX *ctx)
+{
+    if (ctx == NULL)
+        return;
+
+    HMAC_CTX_cleanup(ctx);
+    CRYPTO_free(ctx);
+}
+
+/* Renamed in 1.1.0 */
+#define EVP_MD_CTX_new() EVP_MD_CTX_create()
+#define EVP_MD_CTX_free(ctx) EVP_MD_CTX_destroy((ctx))
+
+static INLINE void *BN_GENCB_get_arg(BN_GENCB *cb);
+
+static INLINE void *BN_GENCB_get_arg(BN_GENCB *cb)
+{
+    return cb->arg;
+}
+
+static INLINE int RSA_set0_key(RSA *r, BIGNUM *n, BIGNUM *e, BIGNUM *d);
+static INLINE void RSA_get0_key(const RSA *r, const BIGNUM **n, const BIGNUM **e, const BIGNUM **d);
+static INLINE int RSA_set0_factors(RSA *r, BIGNUM *p, BIGNUM *q);
+static INLINE void RSA_get0_factors(const RSA *r, const BIGNUM **p, const BIGNUM **q);
+static INLINE int RSA_set0_crt_params(RSA *r, BIGNUM *dmp1, BIGNUM *dmq1, BIGNUM *iqmp);
+static INLINE void RSA_get0_crt_params(const RSA *r, const BIGNUM **dmp1, const BIGNUM **dmq1, const BIGNUM **iqmp);
+
+static INLINE int RSA_set0_key(RSA *r, BIGNUM *n, BIGNUM *e, BIGNUM *d)
+{
+    r->n = n;
+    r->e = e;
+    r->d = d;
+    return 1;
+}
+
+static INLINE void RSA_get0_key(const RSA *r, const BIGNUM **n, const BIGNUM **e, const BIGNUM **d)
+{
+    *n = r->n;
+    *e = r->e;
+    *d = r->d;
+}
+
+static INLINE int RSA_set0_factors(RSA *r, BIGNUM *p, BIGNUM *q)
+{
+    r->p = p;
+    r->q = q;
+    return 1;
+}
+
+static INLINE void RSA_get0_factors(const RSA *r, const BIGNUM **p, const BIGNUM **q)
+{
+    *p = r->p;
+    *q = r->q;
+}
+
+static INLINE int RSA_set0_crt_params(RSA *r, BIGNUM *dmp1, BIGNUM *dmq1, BIGNUM *iqmp)
+{
+    r->dmp1 = dmp1;
+    r->dmq1 = dmq1;
+    r->iqmp = iqmp;
+    return 1;
+}
+
+static INLINE void RSA_get0_crt_params(const RSA *r, const BIGNUM **dmp1, const BIGNUM **dmq1, const BIGNUM **iqmp)
+{
+    *dmp1 = r->dmp1;
+    *dmq1 = r->dmq1;
+    *iqmp = r->iqmp;
+}
+
+static INLINE int DSA_set0_key(DSA *d, BIGNUM *pub_key, BIGNUM *priv_key);
+static INLINE int DSA_set0_pqg(DSA *d, BIGNUM *p, BIGNUM *q, BIGNUM *g);
+static INLINE void DSA_get0_pqg(const DSA *dsa,
+			       const BIGNUM **p, const BIGNUM **q, const BIGNUM **g);
+static INLINE void DSA_get0_key(const DSA *dsa,
+			       const BIGNUM **pub_key, const BIGNUM **priv_key);
+
+static INLINE int DSA_set0_key(DSA *d, BIGNUM *pub_key, BIGNUM *priv_key)
+{
+    d->pub_key = pub_key;
+    d->priv_key = priv_key;
+    return 1;
+}
+
+static INLINE int DSA_set0_pqg(DSA *d, BIGNUM *p, BIGNUM *q, BIGNUM *g)
+{
+    d->p = p;
+    d->q = q;
+    d->g = g;
+    return 1;
+}
+
+static INLINE void
+DSA_get0_pqg(const DSA *dsa, const BIGNUM **p, const BIGNUM **q, const BIGNUM **g)
+{
+    *p = dsa->p;
+    *q = dsa->q;
+    *g = dsa->g;
+}
+
+static INLINE void
+DSA_get0_key(const DSA *dsa, const BIGNUM **pub_key, const BIGNUM **priv_key)
+{
+    if (pub_key)
+        *pub_key = dsa->pub_key;
+
+    if (priv_key)
+        *priv_key = dsa->priv_key;
+}
+
+
+
+static INLINE int DH_set0_key(DH *dh, BIGNUM *pub_key, BIGNUM *priv_key);
+static INLINE int DH_set0_pqg(DH *dh, BIGNUM *p, BIGNUM *q, BIGNUM *g);
+static INLINE int DH_set_length(DH *dh, long length);
+static INLINE void DH_get0_pqg(const DH *dh,
+			       const BIGNUM **p, const BIGNUM **q, const BIGNUM **g);
+static INLINE void DH_get0_key(const DH *dh,
+			       const BIGNUM **pub_key, const BIGNUM **priv_key);
+
+static INLINE int DH_set0_key(DH *dh, BIGNUM *pub_key, BIGNUM *priv_key)
+{
+    dh->pub_key = pub_key;
+    dh->priv_key = priv_key;
+    return 1;
+}
+
+static INLINE int DH_set0_pqg(DH *dh, BIGNUM *p, BIGNUM *q, BIGNUM *g)
+{
+    dh->p = p;
+    dh->q = q;
+    dh->g = g;
+    return 1;
+}
+
+static INLINE int DH_set_length(DH *dh, long length)
+{
+    dh->length = length;
+    return 1;
+}
+
+
+
+static INLINE void
+DH_get0_pqg(const DH *dh, const BIGNUM **p, const BIGNUM **q, const BIGNUM **g)
+{
+    *p = dh->p;
+    *q = dh->q;
+    *g = dh->g;
+}
+
+static INLINE void
+DH_get0_key(const DH *dh, const BIGNUM **pub_key, const BIGNUM **priv_key)
+{
+    if (pub_key)
+        *pub_key = dh->pub_key;
+
+    if (priv_key)
+        *priv_key = dh->priv_key;
+}
+
+#endif /* E_EVP_COMPAT_H__ */
diff --git a/lib/crypto/c_src/fips.c b/lib/crypto/c_src/fips.c
new file mode 100644
index 0000000000..b2d892d00b
--- /dev/null
+++ b/lib/crypto/c_src/fips.c
@@ -0,0 +1,52 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#include "fips.h"
+
+ERL_NIF_TERM info_fips(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{
+#ifdef FIPS_SUPPORT
+    return FIPS_mode() ? atom_enabled : atom_not_enabled;
+#else
+    return atom_not_supported;
+#endif
+}
+
+ERL_NIF_TERM enable_fips_mode(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Boolean) */
+    if (argv[0] == atom_true) {
+#ifdef FIPS_SUPPORT
+        if (FIPS_mode_set(1)) {
+            return atom_true;
+        }
+#endif
+        PRINTF_ERR0("CRYPTO: Could not setup FIPS mode");
+        return atom_false;
+    } else if (argv[0] == atom_false) {
+#ifdef FIPS_SUPPORT
+        if (!FIPS_mode_set(0)) {
+            return atom_false;
+        }
+#endif
+        return atom_true;
+    } else {
+        return enif_make_badarg(env);
+    }
+}
diff --git a/lib/crypto/c_src/fips.h b/lib/crypto/c_src/fips.h
new file mode 100644
index 0000000000..9a436bd202
--- /dev/null
+++ b/lib/crypto/c_src/fips.h
@@ -0,0 +1,29 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifndef E_FIPS_H__
+#define E_FIPS_H__ 1
+
+#include "common.h"
+
+ERL_NIF_TERM info_fips(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM enable_fips_mode(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+
+#endif /* E_FIPS_H__ */
diff --git a/lib/crypto/c_src/hash.c b/lib/crypto/c_src/hash.c
new file mode 100644
index 0000000000..9b79258585
--- /dev/null
+++ b/lib/crypto/c_src/hash.c
@@ -0,0 +1,549 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#include "hash.h"
+#include "digest.h"
+
+#ifdef HAVE_MD5
+#  define MD5_CTX_LEN       (sizeof(MD5_CTX))
+#endif
+#ifdef HAVE_MD4
+#  define MD4_CTX_LEN       (sizeof(MD4_CTX))
+#endif
+#ifdef HAVE_RIPEMD160
+#  define RIPEMD160_CTX_LEN (sizeof(RIPEMD160_CTX))
+#endif
+
+#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(1,0,0)
+struct evp_md_ctx {
+    EVP_MD_CTX* ctx;
+};
+
+/* Define resource types for OpenSSL context structures. */
+static ErlNifResourceType* evp_md_ctx_rtype;
+
+static void evp_md_ctx_dtor(ErlNifEnv* env, struct evp_md_ctx *ctx) {
+    if (ctx == NULL)
+        return;
+
+    if (ctx->ctx)
+        EVP_MD_CTX_free(ctx->ctx);
+}
+#endif
+
+int init_hash_ctx(ErlNifEnv* env) {
+#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(1,0,0)
+    evp_md_ctx_rtype = enif_open_resource_type(env, NULL, "EVP_MD_CTX",
+                                               (ErlNifResourceDtor*) evp_md_ctx_dtor,
+                                               ERL_NIF_RT_CREATE|ERL_NIF_RT_TAKEOVER,
+                                               NULL);
+    if (evp_md_ctx_rtype == NULL)
+        goto err;
+#endif
+
+    return 1;
+
+#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(1,0,0)
+ err:
+    PRINTF_ERR0("CRYPTO: Could not open resource type 'EVP_MD_CTX'");
+    return 0;
+#endif
+}
+
+ERL_NIF_TERM hash_info_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Type) */
+    struct digest_type_t *digp = NULL;
+    const EVP_MD         *md;
+    ERL_NIF_TERM         ret;
+
+    ASSERT(argc == 1);
+
+    if ((digp = get_digest_type(argv[0])) == NULL)
+        return enif_make_badarg(env);
+
+    if ((md = digp->md.p) == NULL)
+        return atom_notsup;
+
+    ret = enif_make_new_map(env);
+
+    enif_make_map_put(env, ret, atom_type,
+        enif_make_int(env, EVP_MD_type(md)), &ret);
+    enif_make_map_put(env, ret, atom_size,
+        enif_make_int(env, EVP_MD_size(md)), &ret);
+    enif_make_map_put(env, ret, atom_block_size,
+        enif_make_int(env, EVP_MD_block_size(md)), &ret);
+
+    return ret;
+}
+
+ERL_NIF_TERM hash_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Type, Data) */
+    struct digest_type_t *digp = NULL;
+    const EVP_MD         *md;
+    ErlNifBinary         data;
+    ERL_NIF_TERM         ret;
+    unsigned             ret_size;
+    unsigned char        *outp;
+
+    ASSERT(argc == 2);
+
+    if ((digp = get_digest_type(argv[0])) == NULL)
+        goto bad_arg;
+    if (!enif_inspect_iolist_as_binary(env, argv[1], &data))
+        goto bad_arg;
+
+    if ((md = digp->md.p) == NULL)
+        goto err;
+
+    ret_size = (unsigned)EVP_MD_size(md);
+    ASSERT(0 < ret_size && ret_size <= EVP_MAX_MD_SIZE);
+
+    if ((outp = enif_make_new_binary(env, ret_size, &ret)) == NULL)
+        goto err;
+    if (EVP_Digest(data.data, data.size, outp, &ret_size, md, NULL) != 1)
+        goto err;
+
+    ASSERT(ret_size == (unsigned)EVP_MD_size(md));
+
+    CONSUME_REDS(env, data);
+    return ret;
+
+ bad_arg:
+    return enif_make_badarg(env);
+
+ err:
+    return atom_notsup;
+}
+
+#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(1,0,0)
+
+ERL_NIF_TERM hash_init_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Type) */
+    struct digest_type_t *digp = NULL;
+    struct evp_md_ctx    *ctx = NULL;
+    ERL_NIF_TERM         ret;
+
+    ASSERT(argc == 1);
+
+    if ((digp = get_digest_type(argv[0])) == NULL)
+        goto bad_arg;
+    if (digp->md.p == NULL)
+        goto err;
+
+    if ((ctx = enif_alloc_resource(evp_md_ctx_rtype, sizeof(struct evp_md_ctx))) == NULL)
+        goto err;
+    if ((ctx->ctx = EVP_MD_CTX_new()) == NULL)
+        goto err;
+    if (EVP_DigestInit(ctx->ctx, digp->md.p) != 1)
+        goto err;
+
+    ret = enif_make_resource(env, ctx);
+    goto done;
+
+ bad_arg:
+    return enif_make_badarg(env);
+
+ err:
+    ret = atom_notsup;
+
+ done:
+    if (ctx)
+        enif_release_resource(ctx);
+    return ret;
+}
+
+ERL_NIF_TERM hash_update_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Context, Data) */
+    struct evp_md_ctx   *ctx, *new_ctx = NULL;
+    ErlNifBinary data;
+    ERL_NIF_TERM ret;
+
+    ASSERT(argc == 2);
+
+    if (!enif_get_resource(env, argv[0], evp_md_ctx_rtype, (void**)&ctx))
+        goto bad_arg;
+    if (!enif_inspect_iolist_as_binary(env, argv[1], &data))
+        goto bad_arg;
+
+    if ((new_ctx = enif_alloc_resource(evp_md_ctx_rtype, sizeof(struct evp_md_ctx))) == NULL)
+        goto err;
+    if ((new_ctx->ctx = EVP_MD_CTX_new()) == NULL)
+        goto err;
+    if (EVP_MD_CTX_copy(new_ctx->ctx, ctx->ctx) != 1)
+        goto err;
+    if (EVP_DigestUpdate(new_ctx->ctx, data.data, data.size) != 1)
+        goto err;
+
+    ret = enif_make_resource(env, new_ctx);
+    CONSUME_REDS(env, data);
+    goto done;
+
+ bad_arg:
+    return enif_make_badarg(env);
+
+ err:
+    ret = atom_notsup;
+
+ done:
+    if (new_ctx)
+        enif_release_resource(new_ctx);
+    return ret;
+}
+
+ERL_NIF_TERM hash_final_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Context) */
+    struct evp_md_ctx *ctx;
+    EVP_MD_CTX        *new_ctx;
+    ERL_NIF_TERM  ret;
+    unsigned      ret_size;
+    unsigned char     *outp;
+
+    ASSERT(argc == 1);
+
+    if (!enif_get_resource(env, argv[0], evp_md_ctx_rtype, (void**)&ctx))
+        goto bad_arg;
+
+    ret_size = (unsigned)EVP_MD_CTX_size(ctx->ctx);
+    ASSERT(0 < ret_size && ret_size <= EVP_MAX_MD_SIZE);
+
+    if ((new_ctx = EVP_MD_CTX_new()) == NULL)
+        goto err;
+    if (EVP_MD_CTX_copy(new_ctx, ctx->ctx) != 1)
+        goto err;
+    if ((outp = enif_make_new_binary(env, ret_size, &ret)) == NULL)
+        goto err;
+    if (EVP_DigestFinal(new_ctx, outp, &ret_size) != 1)
+        goto err;
+
+    ASSERT(ret_size == (unsigned)EVP_MD_CTX_size(ctx->ctx));
+    goto done;
+
+ bad_arg:
+    return enif_make_badarg(env);
+
+ err:
+    ret = atom_notsup;
+
+ done:
+    if (new_ctx)
+        EVP_MD_CTX_free(new_ctx);
+    return ret;
+}
+
+#else /* if OPENSSL_VERSION_NUMBER < 1.0 */
+
+ERL_NIF_TERM hash_init_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Type) */
+    typedef int (*init_fun)(unsigned char*);
+    struct digest_type_t *digp = NULL;
+    ERL_NIF_TERM         ctx;
+    size_t               ctx_size = 0;
+    init_fun             ctx_init = 0;
+    unsigned char        *outp;
+
+    ASSERT(argc == 1);
+
+    if ((digp = get_digest_type(argv[0])) == NULL)
+        goto bad_arg;
+    if (digp->md.p == NULL)
+        goto err;
+
+    switch (EVP_MD_type(digp->md.p))
+    {
+#ifdef HAVE_MD4
+    case NID_md4:
+        ctx_size = MD4_CTX_LEN;
+        ctx_init = (init_fun)(&MD4_Init);
+        break;
+#endif
+#ifdef HAVE_MD5
+    case NID_md5:
+        ctx_size = MD5_CTX_LEN;
+        ctx_init = (init_fun)(&MD5_Init);
+        break;
+#endif
+#ifdef HAVE_RIPEMD160
+    case NID_ripemd160:
+        ctx_size = RIPEMD160_CTX_LEN;
+        ctx_init = (init_fun)(&RIPEMD160_Init);
+        break;
+#endif
+    case NID_sha1:
+        ctx_size = sizeof(SHA_CTX);
+        ctx_init = (init_fun)(&SHA1_Init);
+        break;
+#ifdef HAVE_SHA224
+    case NID_sha224:
+        ctx_size = sizeof(SHA256_CTX);
+        ctx_init = (init_fun)(&SHA224_Init);
+        break;
+#endif
+#ifdef HAVE_SHA256
+    case NID_sha256:
+        ctx_size = sizeof(SHA256_CTX);
+        ctx_init = (init_fun)(&SHA256_Init);
+        break;
+#endif
+#ifdef HAVE_SHA384
+    case NID_sha384:
+        ctx_size = sizeof(SHA512_CTX);
+        ctx_init = (init_fun)(&SHA384_Init);
+        break;
+#endif
+#ifdef HAVE_SHA512
+    case NID_sha512:
+        ctx_size = sizeof(SHA512_CTX);
+        ctx_init = (init_fun)(&SHA512_Init);
+        break;
+#endif
+    default:
+        goto err;
+    }
+    ASSERT(ctx_size);
+    ASSERT(ctx_init);
+
+    if ((outp = enif_make_new_binary(env, ctx_size, &ctx)) == NULL)
+        goto err;
+
+    if (ctx_init(outp) != 1)
+        goto err;
+
+    return enif_make_tuple2(env, argv[0], ctx);
+
+ bad_arg:
+    return enif_make_badarg(env);
+
+ err:
+    return atom_notsup;
+}
+
+ERL_NIF_TERM hash_update_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* ({Type, Context}, Data) */
+    typedef int (*update_fun)(unsigned char*, const unsigned char*, size_t);
+    ERL_NIF_TERM         new_ctx;
+    ErlNifBinary         ctx, data;
+    const ERL_NIF_TERM   *tuple;
+    int                  arity;
+    struct digest_type_t *digp = NULL;
+    unsigned char        *ctx_buff;
+    size_t               ctx_size   = 0;
+    update_fun           ctx_update = 0;
+
+    ASSERT(argc == 2);
+
+    if (!enif_get_tuple(env, argv[0], &arity, &tuple))
+        goto bad_arg;
+    if (arity != 2)
+        goto bad_arg;
+    if ((digp = get_digest_type(tuple[0])) == NULL)
+        goto bad_arg;
+    if (!enif_inspect_binary(env, tuple[1], &ctx))
+        goto bad_arg;
+    if (!enif_inspect_iolist_as_binary(env, argv[1], &data))
+        goto bad_arg;
+
+    if (digp->md.p == NULL)
+        goto err;
+
+    switch (EVP_MD_type(digp->md.p))
+    {
+#ifdef HAVE_MD4
+    case NID_md4:
+        ctx_size   = MD4_CTX_LEN;
+        ctx_update = (update_fun)(&MD4_Update);
+        break;
+#endif
+#ifdef HAVE_MD5
+    case NID_md5:
+        ctx_size   = MD5_CTX_LEN;
+        ctx_update = (update_fun)(&MD5_Update);
+        break;
+#endif
+#ifdef HAVE_RIPEMD160
+    case NID_ripemd160:
+        ctx_size   = RIPEMD160_CTX_LEN;
+        ctx_update = (update_fun)(&RIPEMD160_Update);
+        break;
+#endif
+    case NID_sha1:
+        ctx_size   = sizeof(SHA_CTX);
+        ctx_update = (update_fun)(&SHA1_Update);
+        break;
+#ifdef HAVE_SHA224
+    case NID_sha224:
+        ctx_size   = sizeof(SHA256_CTX);
+        ctx_update = (update_fun)(&SHA224_Update);
+        break;
+#endif
+#ifdef HAVE_SHA256
+    case NID_sha256:
+        ctx_size   = sizeof(SHA256_CTX);
+        ctx_update = (update_fun)(&SHA256_Update);
+        break;
+#endif
+#ifdef HAVE_SHA384
+    case NID_sha384:
+        ctx_size   = sizeof(SHA512_CTX);
+        ctx_update = (update_fun)(&SHA384_Update);
+        break;
+#endif
+#ifdef HAVE_SHA512
+    case NID_sha512:
+        ctx_size   = sizeof(SHA512_CTX);
+        ctx_update = (update_fun)(&SHA512_Update);
+        break;
+#endif
+    default:
+        goto err;
+    }
+    ASSERT(ctx_size);
+    ASSERT(ctx_update);
+
+    if (ctx.size != ctx_size)
+        goto bad_arg;
+
+    if ((ctx_buff = enif_make_new_binary(env, ctx_size, &new_ctx)) == NULL)
+        goto err;
+    memcpy(ctx_buff, ctx.data, ctx_size);
+
+    if (ctx_update(ctx_buff, data.data, data.size) != 1)
+        goto err;
+
+    CONSUME_REDS(env, data);
+    return enif_make_tuple2(env, tuple[0], new_ctx);
+
+ bad_arg:
+    return enif_make_badarg(env);
+
+ err:
+    return atom_notsup;
+}
+
+ERL_NIF_TERM hash_final_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* ({Type, Context}) */
+    typedef int (*final_fun)(unsigned char*, void*);
+    ERL_NIF_TERM         ret;
+    ErlNifBinary         ctx;
+    const ERL_NIF_TERM   *tuple;
+    int                  arity;
+    struct digest_type_t *digp = NULL;
+    const EVP_MD         *md;
+    void                 *new_ctx = NULL;
+    size_t               ctx_size  = 0;
+    final_fun            ctx_final = 0;
+    unsigned char        *outp;
+
+    ASSERT(argc == 1);
+
+    if (!enif_get_tuple(env, argv[0], &arity, &tuple))
+        goto bad_arg;
+    if (arity != 2)
+        goto bad_arg;
+    if ((digp = get_digest_type(tuple[0])) == NULL)
+        goto bad_arg;
+    if (!enif_inspect_binary(env, tuple[1], &ctx))
+        goto bad_arg;
+
+    if ((md = digp->md.p) == NULL)
+        goto err;
+
+    switch (EVP_MD_type(md))
+    {
+#ifdef HAVE_MD4
+    case NID_md4:
+        ctx_size  = MD4_CTX_LEN;
+        ctx_final = (final_fun)(&MD4_Final);
+        break;
+#endif
+#ifdef HAVE_MD5
+    case NID_md5:
+        ctx_size  = MD5_CTX_LEN;
+        ctx_final = (final_fun)(&MD5_Final);
+        break;
+#endif
+#ifdef HAVE_RIPEMD160
+   case NID_ripemd160:
+        ctx_size  = RIPEMD160_CTX_LEN;
+        ctx_final = (final_fun)(&RIPEMD160_Final);
+        break;
+#endif
+    case NID_sha1:
+        ctx_size  = sizeof(SHA_CTX);
+        ctx_final = (final_fun)(&SHA1_Final);
+        break;
+#ifdef HAVE_SHA224
+    case NID_sha224:
+        ctx_size  = sizeof(SHA256_CTX);
+        ctx_final = (final_fun)(&SHA224_Final);
+        break;
+#endif
+#ifdef HAVE_SHA256
+    case NID_sha256:
+        ctx_size  = sizeof(SHA256_CTX);
+        ctx_final = (final_fun)(&SHA256_Final);
+        break;
+#endif
+#ifdef HAVE_SHA384
+    case NID_sha384:
+        ctx_size  = sizeof(SHA512_CTX);
+        ctx_final = (final_fun)(&SHA384_Final);
+        break;
+#endif
+#ifdef HAVE_SHA512
+    case NID_sha512:
+        ctx_size  = sizeof(SHA512_CTX);
+        ctx_final = (final_fun)(&SHA512_Final);
+        break;
+#endif
+    default:
+        goto err;
+    }
+    ASSERT(ctx_size);
+    ASSERT(ctx_final);
+
+    if (ctx.size != ctx_size)
+        goto bad_arg;
+
+    if ((new_ctx = enif_alloc(ctx_size)) == NULL)
+        goto err;
+
+    memcpy(new_ctx, ctx.data, ctx_size);
+
+    if ((outp = enif_make_new_binary(env, (size_t)EVP_MD_size(md), &ret)) == NULL)
+        goto err;
+
+    if (ctx_final(outp, new_ctx) != 1)
+        goto err;
+
+    goto done;
+
+ bad_arg:
+    return enif_make_badarg(env);
+
+ err:
+    ret = atom_notsup;
+
+ done:
+    if (new_ctx)
+        enif_free(new_ctx);
+    return ret;
+}
+
+#endif  /* OPENSSL_VERSION_NUMBER < 1.0 */
diff --git a/lib/crypto/c_src/hash.h b/lib/crypto/c_src/hash.h
new file mode 100644
index 0000000000..92a25cedb7
--- /dev/null
+++ b/lib/crypto/c_src/hash.h
@@ -0,0 +1,34 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifndef E_HASH_H__
+#define E_HASH_H__ 1
+
+#include "common.h"
+
+int init_hash_ctx(ErlNifEnv *env);
+
+ERL_NIF_TERM hash_info_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM hash_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM hash_init_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM hash_update_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM hash_final_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+
+#endif /* E_HASH_H__ */
diff --git a/lib/crypto/c_src/hmac.c b/lib/crypto/c_src/hmac.c
new file mode 100644
index 0000000000..ff7005d75e
--- /dev/null
+++ b/lib/crypto/c_src/hmac.c
@@ -0,0 +1,270 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#include "hmac.h"
+#include "digest.h"
+
+struct hmac_context
+{
+    ErlNifMutex* mtx;
+    int alive;
+    HMAC_CTX* ctx;
+};
+
+static ErlNifResourceType* hmac_context_rtype;
+
+static void hmac_context_dtor(ErlNifEnv* env, struct hmac_context*);
+
+int init_hmac_ctx(ErlNifEnv *env) {
+    hmac_context_rtype = enif_open_resource_type(env, NULL, "hmac_context",
+						 (ErlNifResourceDtor*) hmac_context_dtor,
+						 ERL_NIF_RT_CREATE|ERL_NIF_RT_TAKEOVER,
+						 NULL);
+    if (hmac_context_rtype == NULL)
+        goto err;
+
+    return 1;
+
+ err:
+    PRINTF_ERR0("CRYPTO: Could not open resource type 'hmac_context'");
+    return 0;
+}
+
+ERL_NIF_TERM hmac_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Type, Key, Data) or (Type, Key, Data, MacSize) */
+    struct digest_type_t *digp = NULL;
+    ErlNifBinary         key, data;
+    unsigned char        buff[EVP_MAX_MD_SIZE];
+    unsigned             size = 0, req_size = 0;
+    ERL_NIF_TERM         ret;
+    unsigned char        *outp;
+
+    ASSERT(argc == 3 || argc == 4);
+
+    if ((digp = get_digest_type(argv[0])) == NULL)
+        goto bad_arg;
+    if (!enif_inspect_iolist_as_binary(env, argv[1], &key))
+        goto bad_arg;
+    if (key.size > INT_MAX)
+        goto bad_arg;
+    if (!enif_inspect_iolist_as_binary(env, argv[2], &data))
+        goto bad_arg;
+    if (argc == 4) {
+        if (!enif_get_uint(env, argv[3], &req_size))
+            goto bad_arg;
+    }
+
+    if (digp->md.p == NULL)
+        goto err;
+    if (HMAC(digp->md.p,
+             key.data, (int)key.size,
+             data.data, data.size,
+             buff, &size) == NULL)
+        goto err;
+
+    ASSERT(0 < size && size <= EVP_MAX_MD_SIZE);
+    CONSUME_REDS(env, data);
+
+    if (argc == 4) {
+        if (req_size > size)
+            goto bad_arg;
+
+        size = req_size;
+    }
+
+    if ((outp = enif_make_new_binary(env, size, &ret)) == NULL)
+        goto err;
+
+    memcpy(outp, buff, size);
+    return ret;
+
+ bad_arg:
+    return enif_make_badarg(env);
+
+ err:
+    return atom_notsup;
+}
+
+static void hmac_context_dtor(ErlNifEnv* env, struct hmac_context *obj)
+{
+    if (obj == NULL)
+        return;
+
+    if (obj->alive) {
+        if (obj->ctx)
+            HMAC_CTX_free(obj->ctx);
+	obj->alive = 0;
+    }
+
+    if (obj->mtx != NULL)
+        enif_mutex_destroy(obj->mtx);
+}
+
+ERL_NIF_TERM hmac_init_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Type, Key) */
+    struct digest_type_t *digp = NULL;
+    ErlNifBinary         key;
+    ERL_NIF_TERM         ret;
+    struct hmac_context  *obj = NULL;
+
+    ASSERT(argc == 2);
+
+    if ((digp = get_digest_type(argv[0])) == NULL)
+        goto bad_arg;
+    if (!enif_inspect_iolist_as_binary(env, argv[1], &key))
+        goto bad_arg;
+    if (key.size > INT_MAX)
+        goto bad_arg;
+
+    if (digp->md.p == NULL)
+        goto err;
+
+    if ((obj = enif_alloc_resource(hmac_context_rtype, sizeof(struct hmac_context))) == NULL)
+        goto err;
+    obj->ctx = NULL;
+    obj->mtx = NULL;
+    obj->alive = 0;
+
+    if ((obj->ctx = HMAC_CTX_new()) == NULL)
+        goto err;
+    obj->alive = 1;
+    if ((obj->mtx = enif_mutex_create("crypto.hmac")) == NULL)
+        goto err;
+
+#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(1,0,0)
+    // Check the return value of HMAC_Init: it may fail in FIPS mode
+    // for disabled algorithms
+    if (!HMAC_Init_ex(obj->ctx, key.data, (int)key.size, digp->md.p, NULL))
+        goto err;
+#else
+    // In ancient versions of OpenSSL, this was a void function.
+    HMAC_Init_ex(obj->ctx, key.data, (int)key.size, digp->md.p, NULL);
+#endif
+
+    ret = enif_make_resource(env, obj);
+    goto done;
+
+ bad_arg:
+    return enif_make_badarg(env);
+
+ err:
+    ret = atom_notsup;
+
+ done:
+    if (obj)
+        enif_release_resource(obj);
+    return ret;
+}
+
+ERL_NIF_TERM hmac_update_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Context, Data) */
+    ERL_NIF_TERM ret;
+    ErlNifBinary data;
+    struct hmac_context *obj = NULL;
+
+    ASSERT(argc == 2);
+
+    if (!enif_get_resource(env, argv[0], (ErlNifResourceType*)hmac_context_rtype, (void**)&obj))
+        goto bad_arg;
+    if (!enif_inspect_iolist_as_binary(env, argv[1], &data))
+        goto bad_arg;
+
+    enif_mutex_lock(obj->mtx);
+    if (!obj->alive)
+        goto err;
+
+#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(1,0,0)
+    if (!HMAC_Update(obj->ctx, data.data, data.size))
+        goto err;
+#else
+    // In ancient versions of OpenSSL, this was a void function.
+    HMAC_Update(obj->ctx, data.data, data.size);
+#endif
+
+    CONSUME_REDS(env,data);
+    ret = argv[0];
+    goto done;
+
+ bad_arg:
+    return enif_make_badarg(env);
+
+ err:
+    ret = enif_make_badarg(env);
+
+ done:
+    enif_mutex_unlock(obj->mtx);
+    return ret;
+}
+
+ERL_NIF_TERM hmac_final_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Context) or (Context, HashLen) */
+    ERL_NIF_TERM ret;
+    struct hmac_context* obj;
+    unsigned char mac_buf[EVP_MAX_MD_SIZE];
+    unsigned char * mac_bin;
+    unsigned int req_len = 0;
+    unsigned int mac_len;
+
+    ASSERT(argc == 1 || argc == 2);
+
+    if (!enif_get_resource(env, argv[0], (ErlNifResourceType*)hmac_context_rtype, (void**)&obj))
+        goto bad_arg;
+    if (argc == 2) {
+        if (!enif_get_uint(env, argv[1], &req_len))
+            goto bad_arg;
+    }
+
+    enif_mutex_lock(obj->mtx);
+    if (!obj->alive)
+        goto err;
+
+#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(1,0,0)
+    if (!HMAC_Final(obj->ctx, mac_buf, &mac_len))
+        goto err;
+#else
+    // In ancient versions of OpenSSL, this was a void function.
+    HMAC_Final(obj->ctx, mac_buf, &mac_len);
+#endif
+
+    if (obj->ctx)
+        HMAC_CTX_free(obj->ctx);
+    obj->alive = 0;
+
+    if (argc == 2 && req_len < mac_len) {
+        /* Only truncate to req_len bytes if asked. */
+        mac_len = req_len;
+    }
+    if ((mac_bin = enif_make_new_binary(env, mac_len, &ret)) == NULL)
+        goto err;
+
+    memcpy(mac_bin, mac_buf, mac_len);
+    goto done;
+
+ bad_arg:
+    return enif_make_badarg(env);
+
+ err:
+    ret = enif_make_badarg(env);
+
+ done:
+    enif_mutex_unlock(obj->mtx);
+    return ret;
+}
+
diff --git a/lib/crypto/c_src/hmac.h b/lib/crypto/c_src/hmac.h
new file mode 100644
index 0000000000..1f0e0ca632
--- /dev/null
+++ b/lib/crypto/c_src/hmac.h
@@ -0,0 +1,33 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifndef E_HMAC_H__
+#define E_HMAC_H__ 1
+
+#include "common.h"
+
+int init_hmac_ctx(ErlNifEnv *env);
+
+ERL_NIF_TERM hmac_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM hmac_init_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM hmac_update_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM hmac_final_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+
+#endif /* E_HMAC_H__ */
diff --git a/lib/crypto/c_src/info.c b/lib/crypto/c_src/info.c
new file mode 100644
index 0000000000..42f477fead
--- /dev/null
+++ b/lib/crypto/c_src/info.c
@@ -0,0 +1,107 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#include "info.h"
+
+#ifdef HAVE_DYNAMIC_CRYPTO_LIB
+
+# if defined(DEBUG)
+char *crypto_callback_name = "crypto_callback.debug";
+# elif defined(VALGRIND)
+char *crypto_callback_name = "crypto_callback.valgrind";
+# else
+char *crypto_callback_name = "crypto_callback";
+# endif
+
+int change_basename(ErlNifBinary* bin, char* buf, size_t bufsz, const char* newfile)
+{
+    size_t i;
+    size_t newlen;
+
+    for (i = bin->size; i > 0; i--) {
+	if (bin->data[i-1] == '/')
+	    break;
+    }
+
+    newlen = strlen(newfile);
+    if (i > SIZE_MAX - newlen)
+        goto err;
+
+    if (i + newlen >= bufsz)
+        goto err;
+
+    memcpy(buf, bin->data, i);
+    strcpy(buf+i, newfile);
+
+    return 1;
+
+ err:
+    return 0;
+}
+
+void error_handler(void* null, const char* errstr)
+{
+    PRINTF_ERR1("CRYPTO LOADING ERROR: '%s'", errstr);
+}
+#endif /* HAVE_DYNAMIC_CRYPTO_LIB */
+
+ERL_NIF_TERM info_lib(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
+{/* () */
+    /* [{<<"OpenSSL">>,9470143,<<"OpenSSL 0.9.8k 25 Mar 2009">>}] */
+
+    ERL_NIF_TERM name_term, ver_term;
+    static const char libname[] = "OpenSSL";
+    size_t name_sz;
+    const char* ver;
+    size_t ver_sz;
+    int ver_num;
+    unsigned char *out_name, *out_ver;
+
+    ASSERT(argc == 0);
+
+    name_sz = strlen(libname);
+    ver = SSLeay_version(SSLEAY_VERSION);
+    ver_sz = strlen(ver);
+    ver_num = OPENSSL_VERSION_NUMBER;
+
+    /* R16:
+     * Ignore library version number from SSLeay() and instead show header
+     * version. Otherwise user might try to call a function that is implemented
+     * by a newer library but not supported by the headers used at compile time.
+     * Example: DES_ede3_cfb_encrypt in 0.9.7i but not in 0.9.7d.
+     *
+     * Version string is still from library though.
+     */
+
+    if ((out_name = enif_make_new_binary(env, name_sz, &name_term)) == NULL)
+        goto err;
+    if ((out_ver = enif_make_new_binary(env, ver_sz, &ver_term)) == NULL)
+        goto err;
+
+    memcpy(out_name, libname, name_sz);
+    memcpy(out_ver, ver, ver_sz);
+
+    return enif_make_list1(env, enif_make_tuple3(env, name_term,
+						 enif_make_int(env, ver_num),
+						 ver_term));
+
+ err:
+    return enif_make_badarg(env);
+}
diff --git a/lib/crypto/c_src/info.h b/lib/crypto/c_src/info.h
new file mode 100644
index 0000000000..67690625c9
--- /dev/null
+++ b/lib/crypto/c_src/info.h
@@ -0,0 +1,35 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifndef E_INFO_H__
+#define E_INFO_H__ 1
+
+#include "common.h"
+
+#ifdef HAVE_DYNAMIC_CRYPTO_LIB
+extern char *crypto_callback_name;
+
+int change_basename(ErlNifBinary* bin, char* buf, size_t bufsz, const char* newfile);
+void error_handler(void* null, const char* errstr);
+#endif
+
+ERL_NIF_TERM info_lib(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+
+#endif /* E_INFO_H__ */
diff --git a/lib/crypto/c_src/math.c b/lib/crypto/c_src/math.c
new file mode 100644
index 0000000000..85494bbc93
--- /dev/null
+++ b/lib/crypto/c_src/math.c
@@ -0,0 +1,53 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#include "math.h"
+
+ERL_NIF_TERM do_exor(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Data1, Data2) */
+    ErlNifBinary d1, d2;
+    unsigned char* ret_ptr;
+    size_t i;
+    ERL_NIF_TERM ret;
+
+    ASSERT(argc == 2);
+
+    if (!enif_inspect_iolist_as_binary(env, argv[0], &d1))
+        goto bad_arg;
+    if (!enif_inspect_iolist_as_binary(env, argv[1], &d2))
+        goto bad_arg;
+    if (d1.size != d2.size)
+        goto bad_arg;
+
+    if ((ret_ptr = enif_make_new_binary(env, d1.size, &ret)) == NULL)
+        goto err;
+
+    for (i=0; i<d1.size; i++) {
+	ret_ptr[i] = d1.data[i] ^ d2.data[i];
+    }
+
+    CONSUME_REDS(env,d1);
+    return ret;
+
+ bad_arg:
+ err:
+    return enif_make_badarg(env);
+}
+
diff --git a/lib/crypto/c_src/math.h b/lib/crypto/c_src/math.h
new file mode 100644
index 0000000000..b8d68ea654
--- /dev/null
+++ b/lib/crypto/c_src/math.h
@@ -0,0 +1,28 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifndef E_MATH_H__
+#define E_MATH_H__ 1
+
+#include "common.h"
+
+ERL_NIF_TERM do_exor(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+
+#endif /* E_MATH_H__ */
diff --git a/lib/crypto/c_src/openssl_config.h b/lib/crypto/c_src/openssl_config.h
new file mode 100644
index 0000000000..f926f8af13
--- /dev/null
+++ b/lib/crypto/c_src/openssl_config.h
@@ -0,0 +1,390 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifndef E_OPENSSL_CONFIG_H__
+#define E_OPENSSL_CONFIG_H__ 1
+
+#define OPENSSL_THREAD_DEFINES
+#include <openssl/opensslconf.h>
+
+#include <openssl/crypto.h>
+#ifndef OPENSSL_NO_DES
+#include <openssl/des.h>
+#endif /* #ifndef OPENSSL_NO_DES */
+/* #include <openssl/idea.h> This is not supported on the openssl OTP requires */
+#include <openssl/dsa.h>
+#include <openssl/rsa.h>
+#include <openssl/aes.h>
+#include <openssl/md5.h>
+#include <openssl/md4.h>
+#include <openssl/sha.h>
+#include <openssl/ripemd.h>
+#include <openssl/bn.h>
+#include <openssl/objects.h>
+#ifndef OPENSSL_NO_RC4
+    #include <openssl/rc4.h>
+#endif /* OPENSSL_NO_RC4 */
+#ifndef OPENSSL_NO_RC2
+    #include <openssl/rc2.h>
+#endif
+#include <openssl/blowfish.h>
+#include <openssl/rand.h>
+#include <openssl/evp.h>
+#include <openssl/hmac.h>
+#include <openssl/err.h>
+
+/* Helper macro to construct a OPENSSL_VERSION_NUMBER.
+ * See openssl/opensslv.h
+ */
+#define PACKED_OPENSSL_VERSION(MAJ, MIN, FIX, P)	\
+    ((((((((MAJ << 8) | MIN) << 8 ) | FIX) << 8) | (P-'a'+1)) << 4) | 0xf)
+
+#define PACKED_OPENSSL_VERSION_PLAIN(MAJ, MIN, FIX) \
+    PACKED_OPENSSL_VERSION(MAJ,MIN,FIX,('a'-1))
+
+
+/* LibreSSL was cloned from OpenSSL 1.0.1g and claims to be API and BPI compatible
+ * with 1.0.1.
+ *
+ * LibreSSL has the same names on include files and symbols as OpenSSL, but defines
+ * the OPENSSL_VERSION_NUMBER to be >= 2.0.0
+ *
+ * Therefor works tests like this as intendend:
+ *     OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(1,0,0)
+ * (The test is for example "2.4.2" >= "1.0.0" although the test
+ *  with the cloned OpenSSL test would be "1.0.1" >= "1.0.0")
+ *
+ * But tests like this gives wrong result:
+ *     OPENSSL_VERSION_NUMBER < PACKED_OPENSSL_VERSION_PLAIN(1,1,0)
+ * (The test is false since "2.4.2" < "1.1.0".  It should have been
+ *  true because the LibreSSL API version is "1.0.1")
+ *
+ */
+
+#ifdef LIBRESSL_VERSION_NUMBER
+/* A macro to test on in this file */
+#define HAS_LIBRESSL
+#endif
+
+#ifdef HAS_LIBRESSL
+/* LibreSSL dislikes FIPS */
+# ifdef FIPS_SUPPORT
+#  undef FIPS_SUPPORT
+# endif
+
+/* LibreSSL has never supported the custom mem functions */
+#ifndef HAS_LIBRESSL
+#  define HAS_CRYPTO_MEM_FUNCTIONS
+#endif
+
+# if LIBRESSL_VERSION_NUMBER < PACKED_OPENSSL_VERSION_PLAIN(2,7,0)
+/* LibreSSL wants the 1.0.1 API */
+# define NEED_EVP_COMPATIBILITY_FUNCTIONS
+# endif
+#endif
+
+
+#if OPENSSL_VERSION_NUMBER < PACKED_OPENSSL_VERSION_PLAIN(1,1,0)
+# define NEED_EVP_COMPATIBILITY_FUNCTIONS
+#endif
+
+
+#ifndef HAS_LIBRESSL
+# if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(1,0,0)
+#  define HAS_EVP_PKEY_CTX
+#  define HAVE_EVP_CIPHER_CTX_COPY
+# endif
+#endif
+
+
+#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(1,0,0)
+#include <openssl/modes.h>
+#endif
+
+#include "crypto_callback.h"
+
+#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(0,9,8)	\
+    && !defined(OPENSSL_NO_SHA224) && defined(NID_sha224) \
+    && !defined(OPENSSL_NO_SHA256) /* disabled like this in my sha.h (?) */
+# define HAVE_SHA224
+#endif
+#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(0,9,8)	\
+    && !defined(OPENSSL_NO_SHA256) && defined(NID_sha256)
+# define HAVE_SHA256
+#endif
+#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(0,9,8)	\
+    && !defined(OPENSSL_NO_SHA384) && defined(NID_sha384)\
+    && !defined(OPENSSL_NO_SHA512) /* disabled like this in my sha.h (?) */
+# define HAVE_SHA384
+#endif
+#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(0,9,8)	\
+    && !defined(OPENSSL_NO_SHA512) && defined(NID_sha512)
+# define HAVE_SHA512
+#endif
+#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION(0,9,7,'e')
+# define HAVE_DES_ede3_cfb_encrypt
+#endif
+
+// SHA3:
+#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(1,1,1)
+// An error in beta releases of 1.1.1 fixed in production release
+# ifdef NID_sha3_224
+#  define HAVE_SHA3_224
+# endif
+# ifdef NID_sha3_256
+#  define HAVE_SHA3_256
+# endif
+#endif
+# ifdef NID_sha3_384
+#  define HAVE_SHA3_384
+# endif
+# ifdef NID_sha3_512
+#  define HAVE_SHA3_512
+# endif
+
+// BLAKE2:
+#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(1,1,1) \
+    && !defined(HAS_LIBRESSL) \
+    && !defined(OPENSSL_NO_BLAKE2)
+# define HAVE_BLAKE2
+#endif
+
+#ifndef OPENSSL_NO_MD4
+# define HAVE_MD4
+#endif
+
+#ifndef OPENSSL_NO_MD5
+# define HAVE_MD5
+#endif
+
+#ifndef OPENSSL_NO_RC2
+# define HAVE_RC2
+#endif
+
+#ifndef OPENSSL_NO_RC4
+# define HAVE_RC4
+#endif
+
+#ifndef OPENSSL_NO_RMD160
+/* Note RMD160 vs RIPEMD160 */
+# define HAVE_RIPEMD160
+#endif
+
+
+#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION(0,9,8,'o') \
+	&& !defined(OPENSSL_NO_EC) \
+	&& !defined(OPENSSL_NO_ECDH) \
+	&& !defined(OPENSSL_NO_ECDSA)
+# define HAVE_EC
+#endif
+
+// (test for >= 1.1.1pre8)
+#if OPENSSL_VERSION_NUMBER >= (PACKED_OPENSSL_VERSION_PLAIN(1,1,1) -7) \
+    && !defined(HAS_LIBRESSL) \
+    && defined(HAVE_EC)
+# define HAVE_ED_CURVE_DH
+# if OPENSSL_VERSION_NUMBER >= (PACKED_OPENSSL_VERSION_PLAIN(1,1,1))
+#   define HAVE_EDDSA
+# endif
+#endif
+
+#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION(0,9,8,'c')
+# define HAVE_AES_IGE
+#endif
+
+#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(1,0,1)
+# define HAVE_EVP_AES_CTR
+# define HAVE_AEAD
+# define HAVE_GCM
+# define HAVE_CCM
+# ifndef OPENSSL_NO_CMAC
+#   define HAVE_CMAC
+# endif
+# if defined(RSA_PKCS1_OAEP_PADDING)
+#   define HAVE_RSA_OAEP_PADDING
+# endif
+# define HAVE_RSA_MGF1_MD
+# if OPENSSL_VERSION_NUMBER < PACKED_OPENSSL_VERSION(1,0,1,'d')
+#  define HAVE_GCM_EVP_DECRYPT_BUG
+# endif
+#endif
+
+#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(1,1,0)
+# ifndef HAS_LIBRESSL
+#  if !defined(OPENSSL_NO_CHACHA) && !defined(OPENSSL_NO_POLY1305)
+#    define HAVE_CHACHA20_POLY1305
+#  endif
+#  define HAVE_RSA_OAEP_MD
+# endif
+#endif
+
+#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION(1,1,0,'d')
+# ifndef HAS_LIBRESSL
+#  ifndef OPENSSL_NO_CHACHA
+#    define HAVE_CHACHA20
+#  endif
+# endif
+#endif
+
+// OPENSSL_VERSION_NUMBER >= 1.1.1-pre8
+#if OPENSSL_VERSION_NUMBER >= (PACKED_OPENSSL_VERSION_PLAIN(1,1,1)-7)
+# ifndef HAS_LIBRESSL
+#  if !defined(OPENSSL_NO_POLY1305)
+#    define HAVE_POLY1305
+#  endif
+# endif
+#endif
+
+#if OPENSSL_VERSION_NUMBER <= PACKED_OPENSSL_VERSION(0,9,8,'l')
+# define HAVE_ECB_IVEC_BUG
+#endif
+
+#ifndef HAS_LIBRESSL
+# ifdef RSA_SSLV23_PADDING
+#  define HAVE_RSA_SSLV23_PADDING
+# endif
+#endif
+
+#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(1,0,0)
+# ifdef RSA_PKCS1_PSS_PADDING
+#  define HAVE_RSA_PKCS1_PSS_PADDING
+# endif
+#endif
+
+#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION(0,9,8,'h') \
+    && defined(HAVE_EC)
+/* If OPENSSL_NO_EC is set, there will be an error in ec.h included from engine.h
+   So if EC is disabled, you can't use Engine either....
+*/
+# define HAS_ENGINE_SUPPORT
+#endif
+
+
+#if defined(HAS_ENGINE_SUPPORT)
+# include <openssl/engine.h>
+#endif
+
+#if defined(HAVE_CMAC)
+#include <openssl/cmac.h>
+#endif
+
+#if defined(HAVE_EC)
+#include <openssl/ec.h>
+#include <openssl/ecdh.h>
+#include <openssl/ecdsa.h>
+#endif
+
+#ifdef VALGRIND
+    #  include <valgrind/memcheck.h>
+
+/* libcrypto mixes supplied buffer contents into its entropy pool,
+   which makes valgrind complain about the use of uninitialized data.
+   We use this valgrind "request" to make sure that no such seemingly
+   undefined data is returned.
+*/
+    #  define ERL_VALGRIND_MAKE_MEM_DEFINED(ptr,size) \
+    VALGRIND_MAKE_MEM_DEFINED(ptr,size)
+
+    #   define ERL_VALGRIND_ASSERT_MEM_DEFINED(Ptr,Size)			\
+          do {								\
+              int __erl_valgrind_mem_defined = VALGRIND_CHECK_MEM_IS_DEFINED((Ptr),(Size));	\
+              if (__erl_valgrind_mem_defined != 0) {			\
+	          fprintf(stderr,"\r\n####### VALGRIND_ASSSERT(%p,%ld) failed at %s:%d\r\n", \
+		          (Ptr),(long)(Size), __FILE__, __LINE__);	\
+	          abort();						\
+              }								\
+          } while (0)
+
+#else
+    #  define ERL_VALGRIND_MAKE_MEM_DEFINED(ptr,size)
+    #  define ERL_VALGRIND_ASSERT_MEM_DEFINED(ptr,size)
+#endif
+
+#ifdef DEBUG
+    #  define ASSERT(e) \
+    ((void) ((e) ? 1 : (fprintf(stderr,"Assert '%s' failed at %s:%d\n",\
+				#e, __FILE__, __LINE__), abort(), 0)))
+#else
+    #  define ASSERT(e) ((void) 1)
+#endif
+
+#ifdef __GNUC__
+    #  define INLINE __inline__
+#elif defined(__WIN32__)
+    #  define INLINE __forceinline
+#else
+    #  define INLINE
+#endif
+
+
+#define get_int32(s) ((((unsigned char*) (s))[0] << 24) | \
+                      (((unsigned char*) (s))[1] << 16) | \
+                      (((unsigned char*) (s))[2] << 8)  | \
+                      (((unsigned char*) (s))[3]))
+
+#define put_uint32(s,i) \
+{ (s)[0] = (unsigned char)(((i) >> 24) & 0xff);\
+  (s)[1] = (unsigned char)(((i) >> 16) & 0xff);\
+  (s)[2] = (unsigned char)(((i) >> 8) & 0xff);\
+  (s)[3] = (unsigned char)((i) & 0xff);\
+}
+
+/* This shall correspond to the similar macro in crypto.erl */
+/* Current value is: erlang:system_info(context_reductions) * 10 */
+#define MAX_BYTES_TO_NIF 20000
+
+#define CONSUME_REDS(NifEnv, Ibin)			\
+do {                                                    \
+    size_t _cost = (Ibin).size;                         \
+    if (_cost > SIZE_MAX / 100)                         \
+        _cost = 100;                                    \
+    else                                                \
+        _cost = (_cost * 100) / MAX_BYTES_TO_NIF;       \
+                                                        \
+    if (_cost) {                                        \
+        (void) enif_consume_timeslice((NifEnv),		\
+                (_cost > 100) ? 100 : (int)_cost);      \
+    }                                                   \
+ } while (0)
+
+#ifdef NEED_EVP_COMPATIBILITY_FUNCTIONS
+#  include "evp_compat.h"
+#else
+#  define HAVE_OPAQUE_BN_GENCB
+#endif
+
+#if 0
+#  define PRINTF_ERR0(FMT)         enif_fprintf(stderr, FMT "\n")
+#  define PRINTF_ERR1(FMT, A1)     enif_fprintf(stderr, FMT "\n", A1)
+#  define PRINTF_ERR2(FMT, A1, A2) enif_fprintf(stderr, FMT "\n", A1, A2)
+#else
+#  define PRINTF_ERR0(FMT)
+#  define PRINTF_ERR1(FMT,A1)
+#  define PRINTF_ERR2(FMT,A1,A2)
+#endif
+
+#ifdef FIPS_SUPPORT
+/* In FIPS mode non-FIPS algorithms are disabled and return badarg. */
+#define CHECK_NO_FIPS_MODE() { if (FIPS_mode()) return atom_notsup; }
+#else
+#define CHECK_NO_FIPS_MODE()
+#endif
+
+#endif /* E_OPENSSL_CONFIG_H__ */
diff --git a/lib/crypto/c_src/otp_test_engine.c b/lib/crypto/c_src/otp_test_engine.c
index f452fb2d0c..4a155becf8 100644
--- a/lib/crypto/c_src/otp_test_engine.c
+++ b/lib/crypto/c_src/otp_test_engine.c
@@ -21,8 +21,11 @@
 #ifdef _WIN32
 #define OPENSSL_OPT_WINDLL
 #endif
+
 #include <stdio.h>
 #include <string.h>
+#include <limits.h>
+#include <stdint.h>
 
 #include <openssl/md5.h>
 #include <openssl/rsa.h>
@@ -87,13 +90,12 @@ static int test_init(ENGINE *e) {
     printf("OTP Test Engine Initializatzion!\r\n");
     
 #if defined(FAKE_RSA_IMPL)
-    if (    !RSA_meth_set_finish(test_rsa_method, test_rsa_free)
-            || !RSA_meth_set_sign(test_rsa_method, test_rsa_sign)
-            || !RSA_meth_set_verify(test_rsa_method, test_rsa_verify)
-            ) {
-        fprintf(stderr, "Setup RSA_METHOD failed\r\n");
-        return 0;
-    }
+    if (!RSA_meth_set_finish(test_rsa_method, test_rsa_free))
+        goto err;
+    if (!RSA_meth_set_sign(test_rsa_method, test_rsa_sign))
+        goto err;
+    if (!RSA_meth_set_verify(test_rsa_method, test_rsa_verify))
+        goto err;
 #endif /* if defined(FAKE_RSA_IMPL) */
 
     /* Load all digest and cipher algorithms. Needed for password protected private keys */
@@ -101,6 +103,12 @@ static int test_init(ENGINE *e) {
     OpenSSL_add_all_digests();
 
     return 111;
+
+#if defined(FAKE_RSA_IMPL)
+err:
+    fprintf(stderr, "Setup RSA_METHOD failed\r\n");
+    return 0;
+#endif
 }
 
 static void add_test_data(unsigned char *md, unsigned int len)
@@ -152,15 +160,15 @@ static int test_engine_md5_update(EVP_MD_CTX *ctx,const void *data, size_t count
 
 static int test_engine_md5_final(EVP_MD_CTX *ctx,unsigned char *md) {
 #ifdef OLD
-    int ret;
-
     fprintf(stderr, "MD5 final size of EVP_MD: %lu\r\n", sizeof(EVP_MD));
-    ret = MD5_Final(md, data(ctx));
+    if (!MD5_Final(md, data(ctx)))
+        goto err;
 
-    if (ret > 0) {
-         add_test_data(md, MD5_DIGEST_LENGTH);
-    }
-    return ret;
+    add_test_data(md, MD5_DIGEST_LENGTH);
+    return 1;
+
+ err:
+    return 0;
 #else
     fprintf(stderr, "MD5 final\r\n");
     add_test_data(md, MD5_DIGEST_LENGTH);
@@ -190,7 +198,6 @@ static int test_digest_ids[] = {NID_md5};
 
 static int test_engine_digest_selector(ENGINE *e, const EVP_MD **digest,
         const int **nids, int nid) {
-    int ok = 1;
     if (!digest) {
         *nids = test_digest_ids;
         fprintf(stderr, "Digest is empty! Nid:%d\r\n", nid);
@@ -201,64 +208,82 @@ static int test_engine_digest_selector(ENGINE *e, const EVP_MD **digest,
 #ifdef OLD
         *digest = &test_engine_md5_method;
 #else
-        EVP_MD *md = EVP_MD_meth_new(NID_md5, NID_undef);
-        if (!md ||
-            !EVP_MD_meth_set_result_size(md, MD5_DIGEST_LENGTH) ||
-            !EVP_MD_meth_set_flags(md, 0) ||
-            !EVP_MD_meth_set_init(md,  test_engine_md5_init) ||
-            !EVP_MD_meth_set_update(md,  test_engine_md5_update) ||
-            !EVP_MD_meth_set_final(md,  test_engine_md5_final) ||
-            !EVP_MD_meth_set_copy(md,  NULL) ||
-            !EVP_MD_meth_set_cleanup(md,  NULL) ||
-            !EVP_MD_meth_set_input_blocksize(md, MD5_CBLOCK) ||
-            !EVP_MD_meth_set_app_datasize(md, sizeof(EVP_MD *) + sizeof(MD5_CTX)) ||
-            !EVP_MD_meth_set_ctrl(md, NULL))
-            {
-                ok = 0;
-                *digest = NULL;
-            } else
-            {
-                *digest = md;
-            }
+        EVP_MD *md;
+
+        if ((md = EVP_MD_meth_new(NID_md5, NID_undef)) == NULL)
+            goto err;
+        if (EVP_MD_meth_set_result_size(md, MD5_DIGEST_LENGTH) != 1)
+            goto err;
+        if (EVP_MD_meth_set_flags(md, 0) != 1)
+            goto err;
+        if (EVP_MD_meth_set_init(md, test_engine_md5_init) != 1)
+            goto err;
+        if (EVP_MD_meth_set_update(md, test_engine_md5_update) != 1)
+            goto err;
+        if (EVP_MD_meth_set_final(md, test_engine_md5_final) != 1)
+            goto err;
+        if (EVP_MD_meth_set_copy(md, NULL) != 1)
+            goto err;
+        if (EVP_MD_meth_set_cleanup(md, NULL) != 1)
+            goto err;
+        if (EVP_MD_meth_set_input_blocksize(md, MD5_CBLOCK) != 1)
+            goto err;
+        if (EVP_MD_meth_set_app_datasize(md, sizeof(EVP_MD *) + sizeof(MD5_CTX)) != 1)
+            goto err;
+        if (EVP_MD_meth_set_ctrl(md, NULL) != 1)
+            goto err;
+
+        *digest = md;
 #endif
     }
     else {
-        ok = 0;
-        *digest = NULL;
+        goto err;
     }
     
-    return ok;
+    return 1;
+
+ err:
+    *digest = NULL;
+    return 0;
 }
 
 static int bind_helper(ENGINE * e, const char *id)
 {
 #if defined(FAKE_RSA_IMPL)
-    test_rsa_method = RSA_meth_new("OTP test RSA method", 0);
-    if (test_rsa_method == NULL) {
+    if ((test_rsa_method = RSA_meth_new("OTP test RSA method", 0)) == NULL) {
         fprintf(stderr, "RSA_meth_new failed\r\n");
-        return 0;
+        goto err;
     }
 #endif /* if defined(FAKE_RSA_IMPL) */
 
-    if (!ENGINE_set_id(e, test_engine_id)
-        || !ENGINE_set_name(e, test_engine_name)
-        || !ENGINE_set_init_function(e, test_init)
-        || !ENGINE_set_digests(e, &test_engine_digest_selector)
-        /* For testing of key storage in an Engine: */
-        || !ENGINE_set_load_privkey_function(e, &test_privkey_load)
-        || !ENGINE_set_load_pubkey_function(e, &test_pubkey_load)
-        )
-        return 0;
+    if (!ENGINE_set_id(e, test_engine_id))
+        goto err;
+    if (!ENGINE_set_name(e, test_engine_name))
+        goto err;
+    if (!ENGINE_set_init_function(e, test_init))
+        goto err;
+    if (!ENGINE_set_digests(e, &test_engine_digest_selector))
+        goto err;
+    /* For testing of key storage in an Engine: */
+    if (!ENGINE_set_load_privkey_function(e, &test_privkey_load))
+        goto err;
+    if (!ENGINE_set_load_pubkey_function(e, &test_pubkey_load))
+        goto err;
 
 #if defined(FAKE_RSA_IMPL)
-    if ( !ENGINE_set_RSA(e, test_rsa_method) ) {
-        RSA_meth_free(test_rsa_method);
-        test_rsa_method = NULL;
-        return 0;
-    }
+    if (!ENGINE_set_RSA(e, test_rsa_method))
+        goto err;
 #endif /* if defined(FAKE_RSA_IMPL) */
 
     return 1;
+
+ err:
+#if defined(FAKE_RSA_IMPL)
+    if (test_rsa_method)
+        RSA_meth_free(test_rsa_method);
+    test_rsa_method = NULL;
+#endif
+    return 0;
 }
 
 IMPLEMENT_DYNAMIC_CHECK_FN();
@@ -304,7 +329,7 @@ EVP_PKEY* test_key_load(ENGINE *eng, const char *id, UI_METHOD *ui_method, void
         fprintf(stderr, "Contents of file \"%s\":\r\n",id);
         f = fopen(id, "r");
         { /* Print the contents of the key file */
-            char c;
+            int c;
             while (!feof(f)) {
                 switch (c=fgetc(f)) {
                 case '\n':
@@ -324,23 +349,28 @@ EVP_PKEY* test_key_load(ENGINE *eng, const char *id, UI_METHOD *ui_method, void
 
 int pem_passwd_cb_fun(char *buf, int size, int rwflag, void *password) 
 { 
-    int i;
+    size_t i;
+
+    if (size < 0)
+        return 0;
 
     fprintf(stderr, "In pem_passwd_cb_fun\r\n");
     if (!password)
         return 0;
 
     i = strlen(password);
-    if (i < size) {
-        /* whole pwd (incl terminating 0) fits */
-        fprintf(stderr, "Got FULL pwd %d(%d) chars\r\n", i, size);
-        memcpy(buf, (char*)password, i+1);
-        return i+1;
-    } else {
-        fprintf(stderr, "Got TO LONG pwd %d(%d) chars\r\n", i, size);
-        /* meaningless with a truncated password */
-        return 0;
-    }
+    if (i >= (size_t)size || i > INT_MAX - 1)
+        goto err;
+
+    /* whole pwd (incl terminating 0) fits */
+    fprintf(stderr, "Got FULL pwd %zu(%d) chars\r\n", i, size);
+    memcpy(buf, (char*)password, i+1);
+    return (int)i+1;
+
+ err:
+    fprintf(stderr, "Got TO LONG pwd %zu(%d) chars\r\n", i, size);
+    /* meaningless with a truncated password */
+    return 0;
 }
 
 #endif
@@ -349,7 +379,7 @@ int pem_passwd_cb_fun(char *buf, int size, int rwflag, void *password)
 /* RSA sign. This returns a fixed string so the test case can test that it was called
    instead of the cryptolib default RSA sign */
 
-unsigned char fake_flag[] = {255,3,124,180,35,10,180,151,101,247,62,59,80,122,220,
+static unsigned char fake_flag[] = {255,3,124,180,35,10,180,151,101,247,62,59,80,122,220,
                              142,24,180,191,34,51,150,112,27,43,142,195,60,245,213,80,179};
 
 int test_rsa_sign(int dtype, 
@@ -360,11 +390,10 @@ int test_rsa_sign(int dtype,
                   /* The key */
                   const RSA *rsa)
 {
-    int slen;
     fprintf(stderr, "test_rsa_sign (dtype=%i) called m_len=%u *siglen=%u\r\n", dtype, m_len, *siglen);
     if (!sigret) {
         fprintf(stderr, "sigret = NULL\r\n");
-        return -1;
+        goto err;
     }
 
     /* {int i;
@@ -376,14 +405,20 @@ int test_rsa_sign(int dtype,
 
     if ((sizeof(fake_flag) == m_len)
         && memcmp(m,fake_flag,m_len) == 0) {
+        int slen;
+
         printf("To be faked\r\n");
         /* To be faked */
-        slen = RSA_size(rsa);
-        add_test_data(sigret, slen); /* The signature is 0,1,2...255,0,1... */
-        *siglen = slen; /* Must set this. Why? */
+        if ((slen = RSA_size(rsa)) < 0)
+            goto err;
+        add_test_data(sigret, (unsigned int)slen); /* The signature is 0,1,2...255,0,1... */
+        *siglen = (unsigned int)slen; /* Must set this. Why? */
         return 1; /* 1 = success */
     }
     return 0;
+
+ err:
+    return -1;
 }
 
 int test_rsa_verify(int dtype, 
@@ -398,8 +433,13 @@ int test_rsa_verify(int dtype,
 
     if ((sizeof(fake_flag) == m_len)
         && memcmp(m,fake_flag,m_len) == 0) {
+        int size;
+
+        if ((size = RSA_size(rsa)) < 0)
+            return 0;
+
         printf("To be faked\r\n");
-        return (siglen ==  RSA_size(rsa)) 
+        return (siglen == (unsigned int)size)
             && chk_test_data(sigret, siglen);
     }
     return 0;
diff --git a/lib/crypto/c_src/pkey.c b/lib/crypto/c_src/pkey.c
new file mode 100644
index 0000000000..638bb588fa
--- /dev/null
+++ b/lib/crypto/c_src/pkey.c
@@ -0,0 +1,1461 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#include "pkey.h"
+#include "bn.h"
+#include "digest.h"
+#include "dss.h"
+#include "ec.h"
+#include "eddsa.h"
+#include "engine.h"
+#include "rsa.h"
+
+#define PKEY_BADARG -1
+#define PKEY_NOTSUP 0
+#define PKEY_OK 1
+
+typedef struct PKeyCryptOptions {
+    const EVP_MD *rsa_mgf1_md;
+    ErlNifBinary rsa_oaep_label;
+    const EVP_MD *rsa_oaep_md;
+    int rsa_padding;
+    const EVP_MD *signature_md;
+} PKeyCryptOptions;
+
+typedef struct PKeySignOptions {
+    const EVP_MD *rsa_mgf1_md;
+    int rsa_padding;
+    int rsa_pss_saltlen;
+} PKeySignOptions;
+
+
+static int get_pkey_digest_type(ErlNifEnv *env, ERL_NIF_TERM algorithm, ERL_NIF_TERM type,
+				const EVP_MD **md);
+static int get_pkey_sign_digest(ErlNifEnv *env, ERL_NIF_TERM algorithm,
+				ERL_NIF_TERM type, ERL_NIF_TERM data,
+				unsigned char *md_value, const EVP_MD **mdp,
+				unsigned char **tbsp, size_t *tbslenp);
+static int get_pkey_sign_options(ErlNifEnv *env, ERL_NIF_TERM algorithm, ERL_NIF_TERM options,
+                                 const EVP_MD *md, PKeySignOptions *opt);
+static int get_pkey_private_key(ErlNifEnv *env, ERL_NIF_TERM algorithm, ERL_NIF_TERM key, EVP_PKEY **pkey);
+static int get_pkey_public_key(ErlNifEnv *env, ERL_NIF_TERM algorithm, ERL_NIF_TERM key,
+			       EVP_PKEY **pkey);
+static int get_pkey_crypt_options(ErlNifEnv *env, ERL_NIF_TERM algorithm, ERL_NIF_TERM options,
+				  PKeyCryptOptions *opt);
+static size_t size_of_RSA(EVP_PKEY *pkey);
+
+
+static int get_pkey_digest_type(ErlNifEnv *env, ERL_NIF_TERM algorithm, ERL_NIF_TERM type,
+				const EVP_MD **md)
+{
+    struct digest_type_t *digp = NULL;
+    *md = NULL;
+
+    if (type == atom_none && algorithm == atom_rsa)
+        return PKEY_OK;
+    if (algorithm == atom_eddsa) {
+#ifdef HAVE_EDDSA
+        if (!FIPS_mode()) return PKEY_OK;
+#else
+        return PKEY_NOTSUP;
+#endif
+    }
+    if ((digp = get_digest_type(type)) == NULL)
+        return PKEY_BADARG;
+    if (digp->md.p == NULL)
+        return PKEY_NOTSUP;
+
+    *md = digp->md.p;
+    return PKEY_OK;
+}
+
+static int get_pkey_sign_digest(ErlNifEnv *env, ERL_NIF_TERM algorithm,
+				ERL_NIF_TERM type, ERL_NIF_TERM data,
+				unsigned char *md_value, const EVP_MD **mdp,
+				unsigned char **tbsp, size_t *tbslenp)
+{
+    int i, ret;
+    const ERL_NIF_TERM *tpl_terms;
+    int tpl_arity;
+    ErlNifBinary tbs_bin;
+    EVP_MD_CTX *mdctx = NULL;
+    const EVP_MD *md;
+    unsigned char *tbs;
+    size_t tbslen;
+    unsigned int tbsleni;
+
+    md = *mdp;
+    tbs = *tbsp;
+    tbslen = *tbslenp;
+
+    if ((i = get_pkey_digest_type(env, algorithm, type, &md)) != PKEY_OK)
+        return i;
+
+    if (enif_get_tuple(env, data, &tpl_arity, &tpl_terms)) {
+        if (tpl_arity != 2)
+            goto bad_arg;
+        if (tpl_terms[0] != atom_digest)
+            goto bad_arg;
+        if (!enif_inspect_iolist_as_binary(env, tpl_terms[1], &tbs_bin))
+            goto bad_arg;
+        if (tbs_bin.size > INT_MAX)
+            goto bad_arg;
+        if (md != NULL) {
+            if ((int)tbs_bin.size != EVP_MD_size(md))
+                goto bad_arg;
+        }
+
+        /* We have a digest (= hashed text) in tbs_bin */
+	tbs = tbs_bin.data;
+	tbslen = tbs_bin.size;
+    } else if (md == NULL) {
+        if (!enif_inspect_iolist_as_binary(env, data, &tbs_bin))
+            goto bad_arg;
+
+        /* md == NULL, that is no hashing because DigestType argument was atom_none */
+	tbs = tbs_bin.data;
+	tbslen = tbs_bin.size;
+    } else {
+        if (!enif_inspect_iolist_as_binary(env, data, &tbs_bin))
+            goto bad_arg;
+
+        /* We have the cleartext in tbs_bin and the hash algo info in md */
+	tbs = md_value;
+
+        if ((mdctx = EVP_MD_CTX_create()) == NULL)
+            goto err;
+
+        /* Looks well, now hash the plain text into a digest according to md */
+        if (EVP_DigestInit_ex(mdctx, md, NULL) != 1)
+            goto err;
+        if (EVP_DigestUpdate(mdctx, tbs_bin.data, tbs_bin.size) != 1)
+            goto err;
+        if (EVP_DigestFinal_ex(mdctx, tbs, &tbsleni) != 1)
+            goto err;
+
+        tbslen = (size_t)tbsleni;
+    }
+
+    *mdp = md;
+    *tbsp = tbs;
+    *tbslenp = tbslen;
+
+    ret = PKEY_OK;
+    goto done;
+
+ bad_arg:
+ err:
+    ret = PKEY_BADARG;
+
+ done:
+    if (mdctx)
+        EVP_MD_CTX_destroy(mdctx);
+    return ret;
+}
+
+static int get_pkey_sign_options(ErlNifEnv *env, ERL_NIF_TERM algorithm, ERL_NIF_TERM options,
+                                 const EVP_MD *md, PKeySignOptions *opt)
+{
+    ERL_NIF_TERM head, tail;
+    const ERL_NIF_TERM *tpl_terms;
+    int tpl_arity;
+    const EVP_MD *opt_md;
+
+    if (!enif_is_list(env, options))
+        goto bad_arg;
+
+    /* defaults */
+    if (algorithm == atom_rsa) {
+	opt->rsa_mgf1_md = NULL;
+	opt->rsa_padding = RSA_PKCS1_PADDING;
+	opt->rsa_pss_saltlen = -2;
+    }
+
+    if (enif_is_empty_list(env, options))
+	return PKEY_OK;
+
+    if (algorithm != atom_rsa)
+        goto bad_arg;
+
+    tail = options;
+    while (enif_get_list_cell(env, tail, &head, &tail)) {
+        if (!enif_get_tuple(env, head, &tpl_arity, &tpl_terms))
+            goto bad_arg;
+        if (tpl_arity != 2)
+            goto bad_arg;
+
+        if (tpl_terms[0] == atom_rsa_mgf1_md && enif_is_atom(env, tpl_terms[1])) {
+            int result;
+
+            result = get_pkey_digest_type(env, algorithm, tpl_terms[1], &opt_md);
+            if (result != PKEY_OK)
+                return result;
+
+            opt->rsa_mgf1_md = opt_md;
+
+        } else if (tpl_terms[0] == atom_rsa_padding) {
+            if (tpl_terms[1] == atom_rsa_pkcs1_padding) {
+                opt->rsa_padding = RSA_PKCS1_PADDING;
+
+            } else if (tpl_terms[1] == atom_rsa_pkcs1_pss_padding) {
+#ifdef HAVE_RSA_PKCS1_PSS_PADDING
+                opt->rsa_padding = RSA_PKCS1_PSS_PADDING;
+                if (opt->rsa_mgf1_md == NULL)
+                    opt->rsa_mgf1_md = md;
+#else
+                return PKEY_NOTSUP;
+#endif
+
+            } else if (tpl_terms[1] == atom_rsa_x931_padding) {
+                opt->rsa_padding = RSA_X931_PADDING;
+
+            } else if (tpl_terms[1] == atom_rsa_no_padding) {
+                opt->rsa_padding = RSA_NO_PADDING;
+
+            } else {
+                goto bad_arg;
+            }
+
+        } else if (tpl_terms[0] == atom_rsa_pss_saltlen) {
+            if (!enif_get_int(env, tpl_terms[1], &(opt->rsa_pss_saltlen)))
+                goto bad_arg;
+            if (opt->rsa_pss_saltlen < -2)
+                goto bad_arg;
+
+        } else {
+            goto bad_arg;
+        }
+    }
+
+    return PKEY_OK;
+
+ bad_arg:
+    return PKEY_BADARG;
+}
+
+static int get_pkey_private_key(ErlNifEnv *env, ERL_NIF_TERM algorithm, ERL_NIF_TERM key, EVP_PKEY **pkey)
+{
+    EVP_PKEY *result = NULL;
+    RSA *rsa = NULL;
+    DSA *dsa = NULL;
+#if defined(HAVE_EC)
+    EC_KEY *ec = NULL;
+#endif
+    char *id = NULL;
+    char *password = NULL;
+
+    if (enif_is_map(env, key)) {
+#ifdef HAS_ENGINE_SUPPORT
+        /* Use key stored in engine */
+        ENGINE *e;
+
+        if (!get_engine_and_key_id(env, key, &id, &e))
+            goto err;
+
+        password = get_key_password(env, key);
+        result = ENGINE_load_private_key(e, id, NULL, password);
+
+#else
+        return PKEY_BADARG;
+#endif
+    } else if (algorithm == atom_rsa) {
+        if ((rsa = RSA_new()) == NULL)
+            goto err;
+
+        if (!get_rsa_private_key(env, key, rsa))
+            goto err;
+        if ((result = EVP_PKEY_new()) == NULL)
+            goto err;
+        if (EVP_PKEY_assign_RSA(result, rsa) != 1)
+            goto err;
+        /* On success, result owns rsa */
+        rsa = NULL;
+
+    } else if (algorithm == atom_ecdsa) {
+#if defined(HAVE_EC)
+	const ERL_NIF_TERM *tpl_terms;
+	int tpl_arity;
+
+        if (!enif_get_tuple(env, key, &tpl_arity, &tpl_terms))
+            goto err;
+        if (tpl_arity != 2)
+            goto err;
+        if (!enif_is_tuple(env, tpl_terms[0]))
+            goto err;
+        if (!enif_is_binary(env, tpl_terms[1]))
+            goto err;
+        if (!get_ec_key(env, tpl_terms[0], tpl_terms[1], atom_undefined, &ec))
+            goto err;
+
+        if ((result = EVP_PKEY_new()) == NULL)
+            goto err;
+        if (EVP_PKEY_assign_EC_KEY(result, ec) != 1)
+            goto err;
+        /* On success, result owns ec */
+        ec = NULL;
+
+#else
+	return PKEY_NOTSUP;
+#endif
+    } else if (algorithm == atom_eddsa) {
+#ifdef HAVE_EDDSA
+        if (!FIPS_mode())
+            {
+                if (!get_eddsa_key(env, 0, key, &result))
+                    goto err;
+                else
+                    goto done; // Not nice....
+            }
+#else
+            return PKEY_NOTSUP;
+#endif
+    } else if (algorithm == atom_dss) {
+        if ((dsa = DSA_new()) == NULL)
+            goto err;
+        if (!get_dss_private_key(env, key, dsa))
+            goto err;
+
+        if ((result = EVP_PKEY_new()) == NULL)
+            goto err;
+        if (EVP_PKEY_assign_DSA(result, dsa) != 1)
+            goto err;
+        /* On success, result owns dsa */
+        dsa = NULL;
+
+    } else {
+	return PKEY_BADARG;
+    }
+
+    goto done;
+
+ err:
+    if (result)
+        EVP_PKEY_free(result);
+    result = NULL;
+
+ done:
+    if (password)
+        enif_free(password);
+    if (id)
+        enif_free(id);
+    if (rsa)
+        RSA_free(rsa);
+    if (dsa)
+        DSA_free(dsa);
+#ifdef HAVE_EC
+    if (ec)
+        EC_KEY_free(ec);
+#endif
+
+    if (result == NULL) {
+        return PKEY_BADARG;
+    } else {
+        *pkey = result;
+        return PKEY_OK;
+    }
+}
+
+static int get_pkey_public_key(ErlNifEnv *env, ERL_NIF_TERM algorithm, ERL_NIF_TERM key,
+			       EVP_PKEY **pkey)
+{
+    EVP_PKEY *result = NULL;
+    RSA *rsa = NULL;
+    DSA *dsa = NULL;
+#if defined(HAVE_EC)
+    EC_KEY *ec = NULL;
+#endif
+    char *id = NULL;
+    char *password = NULL;
+
+    if (enif_is_map(env, key)) {
+#ifdef HAS_ENGINE_SUPPORT
+        /* Use key stored in engine */
+        ENGINE *e;
+
+        if (!get_engine_and_key_id(env, key, &id, &e))
+            goto err;
+
+        password = get_key_password(env, key);
+        result = ENGINE_load_public_key(e, id, NULL, password);
+
+#else
+        return PKEY_BADARG;
+#endif
+    } else  if (algorithm == atom_rsa) {
+        if ((rsa = RSA_new()) == NULL)
+            goto err;
+
+        if (!get_rsa_public_key(env, key, rsa))
+            goto err;
+
+        if ((result = EVP_PKEY_new()) == NULL)
+            goto err;
+        if (EVP_PKEY_assign_RSA(result, rsa) != 1)
+            goto err;
+        /* On success, result owns rsa */
+        rsa = NULL;
+
+    } else if (algorithm == atom_ecdsa) {
+#if defined(HAVE_EC)
+	const ERL_NIF_TERM *tpl_terms;
+	int tpl_arity;
+
+        if (!enif_get_tuple(env, key, &tpl_arity, &tpl_terms))
+            goto err;
+        if (tpl_arity != 2)
+            goto err;
+        if (!enif_is_tuple(env, tpl_terms[0]))
+            goto err;
+        if (!enif_is_binary(env, tpl_terms[1]))
+            goto err;
+        if (!get_ec_key(env, tpl_terms[0], atom_undefined, tpl_terms[1], &ec))
+            goto err;
+
+        if ((result = EVP_PKEY_new()) == NULL)
+            goto err;
+
+        if (EVP_PKEY_assign_EC_KEY(result, ec) != 1)
+            goto err;
+        /* On success, result owns ec */
+        ec = NULL;
+
+#else
+	return PKEY_NOTSUP;
+#endif
+    } else if (algorithm == atom_eddsa) {
+#ifdef HAVE_EDDSA
+        if (!FIPS_mode()) {
+            if (!get_eddsa_key(env, 1, key, &result))
+                goto err;
+        }
+#else
+	return PKEY_NOTSUP;
+#endif
+    } else if (algorithm == atom_dss) {
+        if ((dsa = DSA_new()) == NULL)
+            goto err;
+
+        if (!get_dss_public_key(env, key, dsa))
+            goto err;
+
+        if ((result = EVP_PKEY_new()) == NULL)
+            goto err;
+        if (EVP_PKEY_assign_DSA(result, dsa) != 1)
+            goto err;
+        /* On success, result owns dsa */
+        dsa = NULL;
+
+    } else {
+	return PKEY_BADARG;
+    }
+
+    goto done;
+
+ err:
+    if (result)
+        EVP_PKEY_free(result);
+    result = NULL;
+
+ done:
+    if (password)
+        enif_free(password);
+    if (id)
+        enif_free(id);
+    if (rsa)
+        RSA_free(rsa);
+    if (dsa)
+        DSA_free(dsa);
+#ifdef HAVE_EC
+    if (ec)
+        EC_KEY_free(ec);
+#endif
+
+    if (result == NULL) {
+        return PKEY_BADARG;
+    } else {
+        *pkey = result;
+        return PKEY_OK;
+    }
+}
+
+ERL_NIF_TERM pkey_sign_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
+{/* (Algorithm, Type, Data|{digest,Digest}, Key|#{}, Options) */
+    int i;
+    int sig_bin_alloc = 0;
+    ERL_NIF_TERM ret;
+    const EVP_MD *md = NULL;
+    unsigned char md_value[EVP_MAX_MD_SIZE];
+    EVP_PKEY *pkey = NULL;
+#ifdef HAVE_EDDSA
+    EVP_MD_CTX *mdctx = NULL;
+#endif
+#ifdef HAS_EVP_PKEY_CTX
+    EVP_PKEY_CTX *ctx = NULL;
+    size_t siglen;
+#else
+    int len;
+    unsigned int siglen;
+#endif
+    PKeySignOptions sig_opt;
+    ErlNifBinary sig_bin; /* signature */
+    unsigned char *tbs; /* data to be signed */
+    size_t tbslen;
+    RSA *rsa = NULL;
+    DSA *dsa = NULL;
+#if defined(HAVE_EC)
+    EC_KEY *ec = NULL;
+#endif
+/*char buf[1024];
+enif_get_atom(env,argv[0],buf,1024,ERL_NIF_LATIN1); printf("algo=%s ",buf);
+enif_get_atom(env,argv[1],buf,1024,ERL_NIF_LATIN1); printf("hash=%s ",buf);
+*/
+
+#ifndef HAS_ENGINE_SUPPORT
+    if (enif_is_map(env, argv[3]))
+        return atom_notsup;
+#endif
+
+    i = get_pkey_sign_digest(env, argv[0], argv[1], argv[2], md_value, &md, &tbs, &tbslen);
+    switch (i) {
+    case PKEY_OK:
+        break;
+    case PKEY_NOTSUP:
+        goto notsup;
+    default:
+        goto bad_arg;
+    }
+
+    i = get_pkey_sign_options(env, argv[0], argv[4], md, &sig_opt);
+    switch (i) {
+    case PKEY_OK:
+        break;
+    case PKEY_NOTSUP:
+        goto notsup;
+    default:
+        goto bad_arg;
+    }
+
+    if (get_pkey_private_key(env, argv[0], argv[3], &pkey) != PKEY_OK)
+        goto bad_arg;
+
+#ifdef HAS_EVP_PKEY_CTX
+    if ((ctx = EVP_PKEY_CTX_new(pkey, NULL)) == NULL)
+        goto err;
+
+    if (argv[0] != atom_eddsa) {
+        if (EVP_PKEY_sign_init(ctx) != 1)
+            goto err;
+        if (md != NULL) {
+            if (EVP_PKEY_CTX_set_signature_md(ctx, md) != 1)
+                goto err;
+        }
+    }
+
+    if (argv[0] == atom_rsa) {
+        if (EVP_PKEY_CTX_set_rsa_padding(ctx, sig_opt.rsa_padding) != 1)
+            goto err;
+# ifdef HAVE_RSA_PKCS1_PSS_PADDING
+	if (sig_opt.rsa_padding == RSA_PKCS1_PSS_PADDING) {
+            if (sig_opt.rsa_mgf1_md != NULL) {
+# ifdef HAVE_RSA_MGF1_MD
+                if (EVP_PKEY_CTX_set_rsa_mgf1_md(ctx, sig_opt.rsa_mgf1_md) != 1)
+                    goto err;
+# else
+                goto notsup;
+# endif
+            }
+            if (sig_opt.rsa_pss_saltlen > -2) {
+                if (EVP_PKEY_CTX_set_rsa_pss_saltlen(ctx, sig_opt.rsa_pss_saltlen) != 1)
+                    goto err;
+            }
+        }
+#endif
+    }
+
+    if (argv[0] == atom_eddsa) {
+#ifdef HAVE_EDDSA
+        if (!FIPS_mode()) {
+            if ((mdctx = EVP_MD_CTX_new()) == NULL)
+                goto err;
+
+            if (EVP_DigestSignInit(mdctx, NULL, NULL, NULL, pkey) != 1)
+                goto err;
+            if (EVP_DigestSign(mdctx, NULL, &siglen, tbs, tbslen) != 1)
+                goto err;
+            if (!enif_alloc_binary(siglen, &sig_bin))
+                goto err;
+            sig_bin_alloc = 1;
+
+            if (EVP_DigestSign(mdctx, sig_bin.data, &siglen, tbs, tbslen) != 1)
+                goto bad_key;
+        }
+        else
+#endif
+            goto notsup;
+    } else {
+        if (EVP_PKEY_sign(ctx, NULL, &siglen, tbs, tbslen) != 1)
+            goto err;
+        if (!enif_alloc_binary(siglen, &sig_bin))
+            goto err;
+        sig_bin_alloc = 1;
+
+        if (md != NULL) {
+            ERL_VALGRIND_ASSERT_MEM_DEFINED(tbs, EVP_MD_size(md));
+        }
+        if (EVP_PKEY_sign(ctx, sig_bin.data, &siglen, tbs, tbslen) != 1)
+            goto bad_key;
+    }
+#else
+/*printf("Old interface\r\n");
+ */
+    if (argv[0] == atom_rsa) {
+        if ((rsa = EVP_PKEY_get1_RSA(pkey)) == NULL)
+            goto err;
+        if ((len = RSA_size(rsa)) < 0)
+            goto err;
+        if (!enif_alloc_binary((size_t)len, &sig_bin))
+            goto err;
+        sig_bin_alloc = 1;
+
+        if ((len = EVP_MD_size(md)) < 0)
+            goto err;
+        ERL_VALGRIND_ASSERT_MEM_DEFINED(tbs, len);
+
+        if (RSA_sign(md->type, tbs, (unsigned int)len, sig_bin.data, &siglen, rsa) != 1)
+            goto bad_key;
+    } else if (argv[0] == atom_dss) {
+        if ((dsa = EVP_PKEY_get1_DSA(pkey)) == NULL)
+            goto err;
+        if ((len = DSA_size(dsa)) < 0)
+            goto err;
+        if (!enif_alloc_binary((size_t)len, &sig_bin))
+            goto err;
+        sig_bin_alloc = 1;
+
+        if ((len = EVP_MD_size(md)) < 0)
+            goto err;
+        ERL_VALGRIND_ASSERT_MEM_DEFINED(tbs, len);
+
+        if (DSA_sign(md->type, tbs, len, sig_bin.data, &siglen, dsa) != 1)
+            goto bad_key;
+    } else if (argv[0] == atom_ecdsa) {
+#if defined(HAVE_EC)
+        if ((ec = EVP_PKEY_get1_EC_KEY(pkey)) == NULL)
+            goto err;
+        if ((len = ECDSA_size(ec)) < 0)
+            goto err;
+        if (!enif_alloc_binary((size_t)len, &sig_bin))
+            goto err;
+        sig_bin_alloc = 1;
+
+        len = EVP_MD_size(md);
+        ERL_VALGRIND_ASSERT_MEM_DEFINED(tbs, len);
+
+        if (ECDSA_sign(md->type, tbs, len, sig_bin.data, &siglen, ec) != 1)
+            goto bad_key;
+#else
+        goto notsup;
+#endif
+    } else {
+        goto bad_arg;
+    }
+#endif
+
+    ERL_VALGRIND_MAKE_MEM_DEFINED(sig_bin.data, siglen);
+    if (siglen != sig_bin.size) {
+        if (!enif_realloc_binary(&sig_bin, siglen))
+            goto err;
+        ERL_VALGRIND_ASSERT_MEM_DEFINED(sig_bin.data, siglen);
+    }
+    ret = enif_make_binary(env, &sig_bin);
+    sig_bin_alloc = 0;
+    goto done;
+
+ bad_key:
+    ret = atom_error;
+    goto done;
+
+ notsup:
+    ret = atom_notsup;
+    goto done;
+
+ bad_arg:
+ err:
+    ret = enif_make_badarg(env);
+    goto done;
+
+ done:
+    if (sig_bin_alloc)
+        enif_release_binary(&sig_bin);
+    if (rsa)
+        RSA_free(rsa);
+    if (dsa)
+        DSA_free(dsa);
+#ifdef HAVE_EC
+    if (ec)
+        EC_KEY_free(ec);
+#endif
+#ifdef HAS_EVP_PKEY_CTX
+    if (ctx)
+        EVP_PKEY_CTX_free(ctx);
+#endif
+    if (pkey)
+        EVP_PKEY_free(pkey);
+
+#ifdef HAVE_EDDSA
+    if (mdctx)
+        EVP_MD_CTX_free(mdctx);
+#endif
+
+    return ret;
+}
+
+ERL_NIF_TERM pkey_verify_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
+{/* (Algorithm, Type, Data|{digest,Digest}, Signature, Key, Options) */
+    int i;
+    int result;
+    const EVP_MD *md = NULL;
+    unsigned char md_value[EVP_MAX_MD_SIZE];
+    EVP_PKEY *pkey = NULL;
+#ifdef HAS_EVP_PKEY_CTX
+    EVP_PKEY_CTX *ctx = NULL;
+#else
+#endif
+    PKeySignOptions sig_opt;
+    ErlNifBinary sig_bin; /* signature */
+    unsigned char *tbs; /* data to be signed */
+    size_t tbslen;
+    ERL_NIF_TERM ret;
+    RSA *rsa = NULL;
+    DSA *dsa = NULL;
+#ifdef HAVE_EC
+    EC_KEY *ec = NULL;
+#endif
+#ifdef HAVE_EDDSA
+    EVP_MD_CTX *mdctx = NULL;
+#endif
+
+#ifndef HAS_ENGINE_SUPPORT
+    if (enif_is_map(env, argv[4]))
+        return atom_notsup;
+#endif
+
+    if (!enif_inspect_binary(env, argv[3], &sig_bin))
+	return enif_make_badarg(env);
+
+    i = get_pkey_sign_digest(env, argv[0], argv[1], argv[2], md_value, &md, &tbs, &tbslen);
+    switch (i) {
+    case PKEY_OK:
+        break;
+    case PKEY_NOTSUP:
+        goto notsup;
+    default:
+        goto bad_arg;
+    }
+
+    i = get_pkey_sign_options(env, argv[0], argv[5], md, &sig_opt);
+    switch (i) {
+    case PKEY_OK:
+        break;
+    case PKEY_NOTSUP:
+        goto notsup;
+    default:
+        goto bad_arg;
+    }
+
+    if (get_pkey_public_key(env, argv[0], argv[4], &pkey) != PKEY_OK) {
+        goto bad_arg;
+    }
+
+#ifdef HAS_EVP_PKEY_CTX
+/* printf("EVP interface\r\n");
+ */
+    if ((ctx = EVP_PKEY_CTX_new(pkey, NULL)) == NULL)
+        goto err;
+
+    if (argv[0] != atom_eddsa) {
+        if (EVP_PKEY_verify_init(ctx) != 1)
+            goto err;
+        if (md != NULL) {
+            if (EVP_PKEY_CTX_set_signature_md(ctx, md) != 1)
+                goto err;
+        }
+    }
+
+    if (argv[0] == atom_rsa) {
+        if (EVP_PKEY_CTX_set_rsa_padding(ctx, sig_opt.rsa_padding) != 1)
+            goto err;
+        if (sig_opt.rsa_padding == RSA_PKCS1_PSS_PADDING) {
+            if (sig_opt.rsa_mgf1_md != NULL) {
+# ifdef HAVE_RSA_MGF1_MD
+                if (EVP_PKEY_CTX_set_rsa_mgf1_md(ctx, sig_opt.rsa_mgf1_md) != 1)
+                    goto err;
+# else
+                goto notsup;
+# endif
+            }
+            if (sig_opt.rsa_pss_saltlen > -2) {
+                if (EVP_PKEY_CTX_set_rsa_pss_saltlen(ctx, sig_opt.rsa_pss_saltlen) != 1)
+                    goto err;
+            }
+        }
+    }
+
+    if (argv[0] == atom_eddsa) {
+#ifdef HAVE_EDDSA
+        if (!FIPS_mode()) {
+            if ((mdctx = EVP_MD_CTX_new()) == NULL)
+                goto err;
+
+            if (EVP_DigestVerifyInit(mdctx, NULL, NULL, NULL, pkey) != 1)
+                goto err;
+
+            result = EVP_DigestVerify(mdctx, sig_bin.data, sig_bin.size, tbs, tbslen);
+        }
+        else
+#endif
+        goto notsup;
+    } else {
+        if (md != NULL) {
+            ERL_VALGRIND_ASSERT_MEM_DEFINED(tbs, EVP_MD_size(md));
+        }
+        result = EVP_PKEY_verify(ctx, sig_bin.data, sig_bin.size, tbs, tbslen);
+    }
+#else
+/*printf("Old interface\r\n");
+*/
+    if (tbslen > INT_MAX)
+        goto bad_arg;
+    if (sig_bin.size > INT_MAX)
+        goto bad_arg;
+    if (argv[0] == atom_rsa) {
+        if ((rsa = EVP_PKEY_get1_RSA(pkey)) == NULL)
+            goto err;
+        result = RSA_verify(md->type, tbs, (unsigned int)tbslen, sig_bin.data, (unsigned int)sig_bin.size, rsa);
+    } else if (argv[0] == atom_dss) {
+        if ((dsa = EVP_PKEY_get1_DSA(pkey)) == NULL)
+            goto err;
+        result = DSA_verify(0, tbs, (int)tbslen, sig_bin.data, (int)sig_bin.size, dsa);
+    } else if (argv[0] == atom_ecdsa) {
+#if defined(HAVE_EC)
+        if ((ec = EVP_PKEY_get1_EC_KEY(pkey)) == NULL)
+            goto err;
+        result = ECDSA_verify(EVP_MD_type(md), tbs, (int)tbslen, sig_bin.data, (int)sig_bin.size, ec);
+#else
+        goto notsup;
+#endif
+    } else {
+        goto bad_arg;
+    }
+#endif
+
+    ret = (result == 1 ? atom_true : atom_false);
+    goto done;
+
+ bad_arg:
+ err:
+    ret = enif_make_badarg(env);
+    goto done;
+
+ notsup:
+    ret = atom_notsup;
+
+ done:
+#ifdef HAS_EVP_PKEY_CTX
+    if (ctx)
+        EVP_PKEY_CTX_free(ctx);
+#endif
+#ifdef HAVE_EDDSA
+    if (mdctx)
+        EVP_MD_CTX_free(mdctx);
+#endif
+    if (pkey)
+        EVP_PKEY_free(pkey);
+    if (rsa)
+        RSA_free(rsa);
+    if (dsa)
+        DSA_free(dsa);
+#ifdef HAVE_EC
+    if (ec)
+        EC_KEY_free(ec);
+#endif
+
+    return ret;
+}
+
+static int get_pkey_crypt_options(ErlNifEnv *env, ERL_NIF_TERM algorithm, ERL_NIF_TERM options,
+				  PKeyCryptOptions *opt)
+{
+    ERL_NIF_TERM head, tail;
+    const ERL_NIF_TERM *tpl_terms;
+    int tpl_arity;
+    const EVP_MD *opt_md;
+
+    if (!enif_is_list(env, options))
+        goto bad_arg;
+
+    /* defaults */
+    if (algorithm == atom_rsa) {
+	opt->rsa_mgf1_md = NULL;
+	opt->rsa_oaep_label.data = NULL;
+	opt->rsa_oaep_label.size = 0;
+	opt->rsa_oaep_md = NULL;
+	opt->rsa_padding = RSA_PKCS1_PADDING;
+	opt->signature_md = NULL;
+    }
+
+    if (enif_is_empty_list(env, options))
+        return PKEY_OK;
+
+    if (algorithm != atom_rsa)
+        goto bad_arg;
+
+    tail = options;
+    while (enif_get_list_cell(env, tail, &head, &tail)) {
+        if (!enif_get_tuple(env, head, &tpl_arity, &tpl_terms))
+            goto bad_arg;
+        if (tpl_arity != 2)
+            goto bad_arg;
+
+        if (tpl_terms[0] == atom_rsa_padding
+            || tpl_terms[0] == atom_rsa_pad /* Compatibility */
+            ) {
+            if (tpl_terms[1] == atom_rsa_pkcs1_padding) {
+                opt->rsa_padding = RSA_PKCS1_PADDING;
+
+#ifdef HAVE_RSA_OAEP_PADDING
+            } else if (tpl_terms[1] == atom_rsa_pkcs1_oaep_padding) {
+                opt->rsa_padding = RSA_PKCS1_OAEP_PADDING;
+#endif
+
+#ifdef HAVE_RSA_SSLV23_PADDING
+            } else if (tpl_terms[1] == atom_rsa_sslv23_padding) {
+                opt->rsa_padding = RSA_SSLV23_PADDING;
+#endif
+
+            } else if (tpl_terms[1] == atom_rsa_x931_padding) {
+                opt->rsa_padding = RSA_X931_PADDING;
+
+            } else if (tpl_terms[1] == atom_rsa_no_padding) {
+                opt->rsa_padding = RSA_NO_PADDING;
+
+            } else {
+                goto bad_arg;
+            }
+
+        } else if (tpl_terms[0] == atom_signature_md && enif_is_atom(env, tpl_terms[1])) {
+            int i;
+            i = get_pkey_digest_type(env, algorithm, tpl_terms[1], &opt_md);
+            if (i != PKEY_OK) {
+                return i;
+            }
+            opt->signature_md = opt_md;
+
+        } else if (tpl_terms[0] == atom_rsa_mgf1_md && enif_is_atom(env, tpl_terms[1])) {
+            int i;
+#ifndef HAVE_RSA_MGF1_MD
+            if (tpl_terms[1] != atom_sha)
+                return PKEY_NOTSUP;
+#endif
+            i = get_pkey_digest_type(env, algorithm, tpl_terms[1], &opt_md);
+            if (i != PKEY_OK) {
+                return i;
+            }
+            opt->rsa_mgf1_md = opt_md;
+
+        } else if (tpl_terms[0] == atom_rsa_oaep_label
+                   && enif_inspect_binary(env, tpl_terms[1], &(opt->rsa_oaep_label))) {
+#ifdef HAVE_RSA_OAEP_MD
+            continue;
+#else
+            return PKEY_NOTSUP;
+#endif
+
+        } else if (tpl_terms[0] == atom_rsa_oaep_md && enif_is_atom(env, tpl_terms[1])) {
+            int i;
+#ifndef HAVE_RSA_OAEP_MD
+            if (tpl_terms[1] != atom_sha)
+                return PKEY_NOTSUP;
+#endif
+            i = get_pkey_digest_type(env, algorithm, tpl_terms[1], &opt_md);
+            if (i != PKEY_OK) {
+                return i;
+            }
+            opt->rsa_oaep_md = opt_md;
+
+        } else {
+            goto bad_arg;
+        }
+    }
+
+    return PKEY_OK;
+
+ bad_arg:
+    return PKEY_BADARG;
+}
+
+static size_t size_of_RSA(EVP_PKEY *pkey) {
+    int ret = 0;
+    RSA *rsa = NULL;
+
+    if ((rsa = EVP_PKEY_get1_RSA(pkey)) == NULL)
+        goto err;
+    ret = RSA_size(rsa);
+
+ err:
+    if (rsa)
+        RSA_free(rsa);
+
+    return (ret < 0) ? 0 : (size_t)ret;
+}
+
+ERL_NIF_TERM pkey_crypt_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
+{/* (Algorithm, Data, PublKey=[E,N]|[E,N,D]|[E,N,D,P1,P2,E1,E2,C], Options, IsPrivate, IsEncrypt) */
+    ERL_NIF_TERM ret;
+    int i;
+    int result = 0;
+    int tmp_bin_alloc = 0;
+    int out_bin_alloc = 0;
+    EVP_PKEY *pkey = NULL;
+#ifdef HAS_EVP_PKEY_CTX
+    EVP_PKEY_CTX *ctx = NULL;
+#else
+    int len;
+    RSA *rsa = NULL;
+#endif
+    PKeyCryptOptions crypt_opt;
+    ErlNifBinary in_bin, out_bin, tmp_bin;
+    size_t outlen;
+#ifdef HAVE_RSA_SSLV23_PADDING
+    size_t tmplen;
+#endif
+    int is_private, is_encrypt;
+    int algo_init = 0;
+    unsigned char *label_copy = NULL;
+
+    ASSERT(argc == 6);
+
+    is_private = (argv[4] == atom_true);
+    is_encrypt = (argv[5] == atom_true);
+
+/* char algo[1024]; */
+
+#ifndef HAS_ENGINE_SUPPORT
+    if (enif_is_map(env, argv[2]))
+        return atom_notsup;
+#endif
+
+    if (!enif_inspect_binary(env, argv[1], &in_bin))
+        goto bad_arg;
+
+    i = get_pkey_crypt_options(env, argv[0], argv[3], &crypt_opt);
+    switch (i) {
+    case PKEY_OK:
+        break;
+    case PKEY_NOTSUP:
+        goto notsup;
+    default:
+        goto bad_arg;
+    }
+
+    if (is_private) {
+        if (get_pkey_private_key(env, argv[0], argv[2], &pkey) != PKEY_OK)
+            goto bad_arg;
+    } else {
+        if (get_pkey_public_key(env, argv[0], argv[2], &pkey) != PKEY_OK)
+            goto bad_arg;
+    }
+
+#ifdef HAS_EVP_PKEY_CTX
+    if ((ctx = EVP_PKEY_CTX_new(pkey, NULL)) == NULL)
+        goto err;
+
+/* enif_get_atom(env,argv[0],algo,1024,ERL_NIF_LATIN1);  */
+
+    if (is_private) {
+        if (is_encrypt) {
+            /* private encrypt */
+            if ((algo_init = EVP_PKEY_sign_init(ctx)) != 1)
+                goto bad_arg;
+        } else {
+            /* private decrypt */
+            if ((algo_init = EVP_PKEY_decrypt_init(ctx)) != 1)
+                goto bad_arg;
+        }
+    } else {
+        if (is_encrypt) {
+            /* public encrypt */
+            if ((algo_init = EVP_PKEY_encrypt_init(ctx)) != 1)
+                goto bad_arg;
+        } else {
+            /* public decrypt */
+            if ((algo_init = EVP_PKEY_verify_recover_init(ctx)) != 1)
+                goto bad_arg;
+        }
+    }
+
+    if (argv[0] == atom_rsa) {
+        if (crypt_opt.signature_md != NULL) {
+            if (EVP_PKEY_CTX_set_signature_md(ctx, crypt_opt.signature_md) != 1)
+                goto bad_arg;
+        }
+
+#ifdef HAVE_RSA_SSLV23_PADDING
+        if (crypt_opt.rsa_padding == RSA_SSLV23_PADDING) {
+            if (is_encrypt) {
+                tmplen = size_of_RSA(pkey);
+                if (tmplen < 1 || tmplen > INT_MAX)
+                    goto err;
+                if (!enif_alloc_binary(tmplen, &tmp_bin))
+                    goto err;
+                tmp_bin_alloc = 1;
+                if (in_bin.size > INT_MAX)
+                    goto err;
+                if (!RSA_padding_add_SSLv23(tmp_bin.data, (int)tmplen, in_bin.data, (int)in_bin.size))
+                    goto err;
+                in_bin = tmp_bin;
+            }
+            if (EVP_PKEY_CTX_set_rsa_padding(ctx, RSA_NO_PADDING) != 1)
+                goto err;
+        } else
+#endif
+        {
+            if (EVP_PKEY_CTX_set_rsa_padding(ctx, crypt_opt.rsa_padding) != 1)
+                goto err;
+        }
+
+#ifdef HAVE_RSA_OAEP_MD
+        if (crypt_opt.rsa_padding == RSA_PKCS1_OAEP_PADDING) {
+            if (crypt_opt.rsa_oaep_md != NULL) {
+                if (EVP_PKEY_CTX_set_rsa_oaep_md(ctx, crypt_opt.rsa_oaep_md) != 1)
+                    goto err;
+            }
+
+            if (crypt_opt.rsa_mgf1_md != NULL) {
+                if (EVP_PKEY_CTX_set_rsa_mgf1_md(ctx, crypt_opt.rsa_mgf1_md) != 1)
+                    goto err;
+            }
+
+            if (crypt_opt.rsa_oaep_label.data != NULL && crypt_opt.rsa_oaep_label.size > 0) {
+                if (crypt_opt.rsa_oaep_label.size > INT_MAX)
+                    goto err;
+                if ((label_copy = OPENSSL_malloc(crypt_opt.rsa_oaep_label.size)) == NULL)
+                    goto err;
+
+                memcpy((void *)(label_copy), (const void *)(crypt_opt.rsa_oaep_label.data),
+                       crypt_opt.rsa_oaep_label.size);
+
+                if (EVP_PKEY_CTX_set0_rsa_oaep_label(ctx, label_copy,
+                                                     (int)crypt_opt.rsa_oaep_label.size) != 1)
+                    goto err;
+                /* On success, label_copy is owned by ctx */
+                label_copy = NULL;
+            }
+        }
+#endif
+    }
+
+    if (is_private) {
+        if (is_encrypt) {
+            /* private_encrypt */
+            result = EVP_PKEY_sign(ctx, NULL, &outlen, in_bin.data, in_bin.size);
+        } else {
+            /* private_decrypt */
+            result = EVP_PKEY_decrypt(ctx, NULL, &outlen, in_bin.data, in_bin.size);
+        }
+    } else {
+        if (is_encrypt) {
+            /* public_encrypt */
+            result = EVP_PKEY_encrypt(ctx, NULL, &outlen, in_bin.data, in_bin.size);
+        } else {
+            /* public_decrypt */
+            result = EVP_PKEY_verify_recover(ctx, NULL, &outlen, in_bin.data, in_bin.size);
+        }
+    }
+    /* fprintf(stderr,"i = %d %s:%d\r\n", i, __FILE__, __LINE__); */
+
+    if (result != 1)
+        goto err;
+
+    if (!enif_alloc_binary(outlen, &out_bin))
+        goto err;
+    out_bin_alloc = 1;
+
+    if (is_private) {
+        if (is_encrypt) {
+            /* private_encrypt */
+            result = EVP_PKEY_sign(ctx, out_bin.data, &outlen, in_bin.data, in_bin.size);
+        } else {
+            /* private_decrypt */
+            result = EVP_PKEY_decrypt(ctx, out_bin.data, &outlen, in_bin.data, in_bin.size);
+        }
+    } else {
+        if (is_encrypt) {
+            /* public_encrypt */
+            result = EVP_PKEY_encrypt(ctx, out_bin.data, &outlen, in_bin.data, in_bin.size);
+        } else {
+            /* public_decrypt */
+            result = EVP_PKEY_verify_recover(ctx, out_bin.data, &outlen, in_bin.data, in_bin.size);
+        }
+    }
+
+#else
+    /* Non-EVP cryptolib. Only support RSA */
+
+    if (argv[0] != atom_rsa) {
+        algo_init = -2;         /* exitcode: notsup */
+        goto bad_arg;
+    }
+
+    if ((rsa = EVP_PKEY_get1_RSA(pkey)) == NULL)
+        goto err;
+    if ((len = RSA_size(rsa)) < 0)
+        goto err;
+    if (!enif_alloc_binary((size_t)len, &out_bin))
+        goto err;
+    out_bin_alloc = 1;
+
+    if (in_bin.size > INT_MAX)
+        goto err;
+    if (is_private) {
+        if (is_encrypt) {
+            /* non-evp rsa private encrypt */
+            ERL_VALGRIND_ASSERT_MEM_DEFINED(in_bin.data,in_bin.size);
+            result = RSA_private_encrypt((int)in_bin.size, in_bin.data,
+                                    out_bin.data, rsa, crypt_opt.rsa_padding);
+            if (result > 0) {
+                ERL_VALGRIND_MAKE_MEM_DEFINED(out_bin.data, result);
+            }
+        } else {
+            /* non-evp rsa private decrypt */
+            result = RSA_private_decrypt((int)in_bin.size, in_bin.data,
+                                    out_bin.data, rsa, crypt_opt.rsa_padding);
+            if (result > 0) {
+                ERL_VALGRIND_MAKE_MEM_DEFINED(out_bin.data, result);
+                if (!enif_realloc_binary(&out_bin, (size_t)result))
+                    goto err;
+            }
+        }
+    } else {
+        if (is_encrypt) {
+            /* non-evp rsa public encrypt */
+            ERL_VALGRIND_ASSERT_MEM_DEFINED(in_bin.data,in_bin.size);
+            result = RSA_public_encrypt((int)in_bin.size, in_bin.data,
+                                   out_bin.data, rsa, crypt_opt.rsa_padding);
+            if (result > 0) {
+                ERL_VALGRIND_MAKE_MEM_DEFINED(out_bin.data, result);
+            }
+        } else {
+            /* non-evp rsa public decrypt */
+            result = RSA_public_decrypt((int)in_bin.size, in_bin.data,
+                                   out_bin.data, rsa, crypt_opt.rsa_padding);
+            if (result > 0) {
+                ERL_VALGRIND_MAKE_MEM_DEFINED(out_bin.data, result);
+                if (!enif_realloc_binary(&out_bin, (size_t)result))
+                    goto err;
+            }
+        }
+    }
+
+    outlen = (size_t)result;
+#endif
+
+    if ((result > 0) && argv[0] == atom_rsa && !is_encrypt) {
+#ifdef HAVE_RSA_SSLV23_PADDING
+        if (crypt_opt.rsa_padding == RSA_SSLV23_PADDING) {
+            unsigned char *p;
+
+            tmplen = size_of_RSA(pkey);
+            if (tmplen < 1 || tmplen > INT_MAX)
+                goto err;
+            if (!enif_alloc_binary(tmplen, &tmp_bin))
+                goto err;
+            tmp_bin_alloc = 1;
+            if (out_bin.size > INT_MAX)
+                goto err;
+
+            p = out_bin.data;
+            p++;
+
+            result = RSA_padding_check_SSLv23(tmp_bin.data, (int)tmplen, p, (int)out_bin.size - 1, (int)tmplen);
+            if (result >= 0) {
+                outlen = (size_t)result;
+                in_bin = out_bin;
+                out_bin = tmp_bin;
+                tmp_bin = in_bin;
+                result = 1;
+            }
+        }
+#endif
+    }
+
+    if (result > 0) {
+        ERL_VALGRIND_MAKE_MEM_DEFINED(out_bin.data, outlen);
+        if (outlen != out_bin.size) {
+            if (!enif_realloc_binary(&out_bin, outlen))
+                goto err;
+            ERL_VALGRIND_ASSERT_MEM_DEFINED(out_bin.data, outlen);
+        }
+        ret = enif_make_binary(env, &out_bin);
+        out_bin_alloc = 0;
+    } else {
+        ret = atom_error;
+    }
+    goto done;
+
+ notsup:
+    ret = atom_notsup;
+    goto done;
+
+ bad_arg:
+ err:
+    if (algo_init == -2)
+        ret = atom_notsup;
+    else
+        ret = enif_make_badarg(env);
+
+ done:
+    if (out_bin_alloc)
+        enif_release_binary(&out_bin);
+    if (tmp_bin_alloc)
+        enif_release_binary(&tmp_bin);
+
+#ifdef HAS_EVP_PKEY_CTX
+    if (ctx)
+        EVP_PKEY_CTX_free(ctx);
+#else
+    if (rsa)
+        RSA_free(rsa);
+#endif
+    if (pkey)
+        EVP_PKEY_free(pkey);
+
+    if (label_copy)
+        OPENSSL_free(label_copy);
+
+    return ret;
+}
+
+ERL_NIF_TERM privkey_to_pubkey_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{ /* (Algorithm, PrivKey | KeyMap) */
+    ERL_NIF_TERM ret;
+    EVP_PKEY *pkey = NULL;
+    RSA *rsa = NULL;
+    DSA *dsa = NULL;
+    ERL_NIF_TERM result[8];
+
+    ASSERT(argc == 2);
+
+    if (get_pkey_private_key(env, argv[0], argv[1], &pkey) != PKEY_OK)
+        goto bad_arg;
+
+    if (argv[0] == atom_rsa) {
+        const BIGNUM *n = NULL, *e = NULL, *d = NULL;
+
+        if ((rsa = EVP_PKEY_get1_RSA(pkey)) == NULL)
+            goto err;
+
+        RSA_get0_key(rsa, &n, &e, &d);
+
+        // Exponent E
+        if ((result[0] = bin_from_bn(env, e)) == atom_error)
+            goto err;
+        // Modulus N = p*q
+        if ((result[1] = bin_from_bn(env, n)) == atom_error)
+            goto err;
+
+        ret = enif_make_list_from_array(env, result, 2);
+
+    } else if (argv[0] == atom_dss) {
+        const BIGNUM *p = NULL, *q = NULL, *g = NULL, *pub_key = NULL;
+
+        if ((dsa = EVP_PKEY_get1_DSA(pkey)) == NULL)
+            goto err;
+
+        DSA_get0_pqg(dsa, &p, &q, &g);
+        DSA_get0_key(dsa, &pub_key, NULL);
+
+        if ((result[0] = bin_from_bn(env, p)) == atom_error)
+            goto err;
+        if ((result[1] = bin_from_bn(env, q)) == atom_error)
+            goto err;
+        if ((result[2] = bin_from_bn(env, g)) == atom_error)
+            goto err;
+        if ((result[3] = bin_from_bn(env, pub_key)) == atom_error)
+            goto err;
+
+        ret = enif_make_list_from_array(env, result, 4);
+
+    } else if (argv[0] == atom_ecdsa) {
+#if defined(HAVE_EC)
+        /* not yet implemented
+          EC_KEY *ec = EVP_PKEY_get1_EC_KEY(pkey);
+          if (ec) {
+          / * Example of result:
+               {
+                 Curve =  {Field, Prime, Point, Order, CoFactor} =
+                    {
+                      Field =  {prime_field,<<255,...,255>>},
+                      Prime = {<<255,...,252>>,
+                               <<90,...,75>>,
+                               <<196,...,144>>
+                              },
+                      Point =    <<4,...,245>>,
+                      Order =    <<255,...,81>>,
+                      CoFactor = <<1>>
+                    },
+                Key = <<151,...,62>>
+                }
+              or
+              {
+                Curve =
+                    {characteristic_two_field,
+                     M,
+                     Basis = {tpbasis, _}
+                           | {ppbasis, k1, k2, k3}
+                    },
+                Key
+               }
+        * /
+            EVP_PKEY_free(pkey);
+            return enif_make_list_from_array(env, ..., ...);
+        */
+#endif
+        goto bad_arg;
+    } else {
+        goto bad_arg;
+    }
+
+    goto done;
+
+ bad_arg:
+ err:
+    ret = enif_make_badarg(env);
+
+ done:
+    if (rsa)
+        RSA_free(rsa);
+    if (dsa)
+        DSA_free(dsa);
+    if (pkey)
+        EVP_PKEY_free(pkey);
+
+    return ret;
+}
diff --git a/lib/crypto/c_src/pkey.h b/lib/crypto/c_src/pkey.h
new file mode 100644
index 0000000000..f647a4a160
--- /dev/null
+++ b/lib/crypto/c_src/pkey.h
@@ -0,0 +1,31 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifndef E_PKEY_H__
+#define E_PKEY_H__ 1
+
+#include "common.h"
+
+ERL_NIF_TERM pkey_sign_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM pkey_verify_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM pkey_crypt_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM privkey_to_pubkey_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+
+#endif /* E_PKEY_H__ */
diff --git a/lib/crypto/c_src/poly1305.c b/lib/crypto/c_src/poly1305.c
new file mode 100644
index 0000000000..76579c0a29
--- /dev/null
+++ b/lib/crypto/c_src/poly1305.c
@@ -0,0 +1,90 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#include "poly1305.h"
+
+/* For OpenSSL >= 1.1.1 the hmac_nif and cmac_nif could be integrated into poly1305 (with 'type' as parameter) */
+ERL_NIF_TERM poly1305_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Key, Text) */
+#ifdef HAVE_POLY1305
+    ErlNifBinary key_bin, text, ret_bin;
+    ERL_NIF_TERM ret;
+    EVP_PKEY *key = NULL;
+    EVP_MD_CTX *mctx = NULL;
+    EVP_PKEY_CTX *pctx = NULL;
+    const EVP_MD *md = NULL;
+    size_t size;
+    int ret_bin_alloc = 0;
+
+    ASSERT(argc == 2);
+
+    if (!enif_inspect_binary(env, argv[0], &key_bin))
+        goto bad_arg;
+    if (key_bin.size != 32)
+        goto bad_arg;
+    if (!enif_inspect_binary(env, argv[1], &text))
+        goto bad_arg;
+
+    if ((key = EVP_PKEY_new_raw_private_key(EVP_PKEY_POLY1305, /*engine*/ NULL, key_bin.data,  key_bin.size)) == NULL)
+        goto err;
+
+    if ((mctx = EVP_MD_CTX_new()) == NULL)
+        goto err;
+    if (EVP_DigestSignInit(mctx, &pctx, md, /*engine*/ NULL, key) != 1)
+        goto err;
+    if (EVP_DigestSignUpdate(mctx, text.data, text.size) != 1)
+        goto err;
+
+    if (EVP_DigestSignFinal(mctx, NULL, &size) != 1)
+        goto err;
+    if (!enif_alloc_binary(size, &ret_bin))
+        goto err;
+    ret_bin_alloc = 1;
+    if (EVP_DigestSignFinal(mctx, ret_bin.data, &size) != 1)
+        goto err;
+
+    if (size != ret_bin.size) {
+        if (!enif_realloc_binary(&ret_bin, size))
+            goto err;
+    }
+
+    ret = enif_make_binary(env, &ret_bin);
+    ret_bin_alloc = 0;
+    goto done;
+
+ bad_arg:
+    return enif_make_badarg(env);
+
+ err:
+    if (ret_bin_alloc)
+        enif_release_binary(&ret_bin);
+    ret = atom_error;
+
+ done:
+    if (mctx)
+        EVP_MD_CTX_free(mctx);
+    if (key)
+        EVP_PKEY_free(key);
+    return ret;
+
+#else
+    return enif_raise_exception(env, atom_notsup);
+#endif
+}
diff --git a/lib/crypto/c_src/poly1305.h b/lib/crypto/c_src/poly1305.h
new file mode 100644
index 0000000000..4bf45e6218
--- /dev/null
+++ b/lib/crypto/c_src/poly1305.h
@@ -0,0 +1,28 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifndef E_POLY1305_H__
+#define E_POLY1305_H__ 1
+
+#include "common.h"
+
+ERL_NIF_TERM poly1305_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+
+#endif /* E_POLY1305_H__ */
diff --git a/lib/crypto/c_src/rand.c b/lib/crypto/c_src/rand.c
new file mode 100644
index 0000000000..3812ae0991
--- /dev/null
+++ b/lib/crypto/c_src/rand.c
@@ -0,0 +1,149 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#include "rand.h"
+#include "bn.h"
+
+ERL_NIF_TERM strong_rand_bytes_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Bytes) */
+    unsigned bytes;
+    unsigned char* data;
+    ERL_NIF_TERM ret;
+
+    ASSERT(argc == 1);
+
+    if (!enif_get_uint(env, argv[0], &bytes))
+        goto bad_arg;
+    if (bytes > INT_MAX)
+        goto bad_arg;
+
+    if ((data = enif_make_new_binary(env, bytes, &ret)) == NULL)
+        goto err;
+    if (RAND_bytes(data, (int)bytes) != 1)
+        goto err;
+
+    ERL_VALGRIND_MAKE_MEM_DEFINED(data, bytes);
+    return ret;
+
+ bad_arg:
+    return enif_make_badarg(env);
+
+ err:
+    return atom_false;
+}
+
+ERL_NIF_TERM strong_rand_range_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Range) */
+    BIGNUM *bn_range = NULL, *bn_rand = NULL;
+    ERL_NIF_TERM ret;
+
+    ASSERT(argc == 1);
+
+    if (!get_bn_from_bin(env, argv[0], &bn_range))
+        goto bad_arg;
+
+    if ((bn_rand = BN_new()) == NULL)
+        goto err;
+    if (!BN_rand_range(bn_rand, bn_range))
+        goto err;
+
+    if ((ret = bin_from_bn(env, bn_rand)) == atom_error)
+        goto err;
+    goto done;
+
+ bad_arg:
+    return enif_make_badarg(env);
+
+ err:
+    ret = atom_false;
+
+ done:
+    if (bn_rand)
+        BN_free(bn_rand);
+    if (bn_range)
+        BN_free(bn_range);
+    return ret;
+}
+
+ERL_NIF_TERM rand_uniform_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Lo,Hi) */
+    BIGNUM *bn_from = NULL, *bn_to = NULL, *bn_rand = NULL;
+    unsigned char* data;
+    int dlen;
+    ERL_NIF_TERM ret;
+
+    ASSERT(argc == 2);
+
+    if (!get_bn_from_mpint(env, argv[0], &bn_from))
+        goto bad_arg;
+    if (!get_bn_from_mpint(env, argv[1], &bn_rand))
+        goto bad_arg;
+
+    if ((bn_to = BN_new()) == NULL)
+        goto err;
+
+    if (!BN_sub(bn_to, bn_rand, bn_from))
+        goto err;
+    if (!BN_pseudo_rand_range(bn_rand, bn_to))
+        goto err;
+    if (!BN_add(bn_rand, bn_rand, bn_from))
+        goto err;
+
+    if ((dlen = BN_num_bytes(bn_rand)) < 0)
+        goto err;
+    if ((data = enif_make_new_binary(env, (size_t)dlen+4, &ret)) == NULL)
+        goto err;
+
+    put_uint32(data, (unsigned int)dlen);
+    BN_bn2bin(bn_rand, data+4);
+    ERL_VALGRIND_MAKE_MEM_DEFINED(data+4, dlen);
+    goto done;
+
+ bad_arg:
+ err:
+    ret = enif_make_badarg(env);
+
+ done:
+    if (bn_rand)
+        BN_free(bn_rand);
+    if (bn_from)
+        BN_free(bn_from);
+    if (bn_to)
+        BN_free(bn_to);
+    return ret;
+}
+
+ERL_NIF_TERM rand_seed_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Seed) */
+    ErlNifBinary seed_bin;
+
+    ASSERT(argc == 1);
+
+    if (!enif_inspect_binary(env, argv[0], &seed_bin))
+        goto bad_arg;
+    if (seed_bin.size > INT_MAX)
+        goto bad_arg;
+
+    RAND_seed(seed_bin.data, (int)seed_bin.size);
+    return atom_ok;
+
+ bad_arg:
+    return enif_make_badarg(env);
+}
diff --git a/lib/crypto/c_src/rand.h b/lib/crypto/c_src/rand.h
new file mode 100644
index 0000000000..9c23d343ec
--- /dev/null
+++ b/lib/crypto/c_src/rand.h
@@ -0,0 +1,31 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifndef E_RAND_H__
+#define E_RAND_H__ 1
+
+#include "common.h"
+
+ERL_NIF_TERM strong_rand_bytes_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM strong_rand_range_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM rand_uniform_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM rand_seed_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+
+#endif /* E_RAND_H__ */
diff --git a/lib/crypto/c_src/rsa.c b/lib/crypto/c_src/rsa.c
new file mode 100644
index 0000000000..e9f29aa496
--- /dev/null
+++ b/lib/crypto/c_src/rsa.c
@@ -0,0 +1,282 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#include "rsa.h"
+#include "bn.h"
+
+static ERL_NIF_TERM rsa_generate_key(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM put_rsa_private_key(ErlNifEnv* env, const RSA *rsa);
+static int check_erlang_interrupt(int maj, int min, BN_GENCB *ctxt);
+
+int get_rsa_private_key(ErlNifEnv* env, ERL_NIF_TERM key, RSA *rsa)
+{
+    /* key=[E,N,D]|[E,N,D,P1,P2,E1,E2,C] */
+    ERL_NIF_TERM head, tail;
+    BIGNUM *e = NULL, *n = NULL, *d = NULL;
+    BIGNUM *p = NULL, *q = NULL;
+    BIGNUM *dmp1 = NULL, *dmq1 = NULL, *iqmp = NULL;
+
+    if (!enif_get_list_cell(env, key, &head, &tail))
+        goto bad_arg;
+    if (!get_bn_from_bin(env, head, &e))
+        goto bad_arg;
+    if (!enif_get_list_cell(env, tail, &head, &tail))
+        goto bad_arg;
+    if (!get_bn_from_bin(env, head, &n))
+        goto bad_arg;
+    if (!enif_get_list_cell(env, tail, &head, &tail))
+        goto bad_arg;
+    if (!get_bn_from_bin(env, head, &d))
+        goto bad_arg;
+
+    if (!RSA_set0_key(rsa, n, e, d))
+        goto err;
+    /* rsa now owns n, e, and d */
+    n = NULL;
+    e = NULL;
+    d = NULL;
+
+    if (enif_is_empty_list(env, tail))
+        return 1;
+
+    if (!enif_get_list_cell(env, tail, &head, &tail))
+        goto bad_arg;
+    if (!get_bn_from_bin(env, head, &p))
+        goto bad_arg;
+    if (!enif_get_list_cell(env, tail, &head, &tail))
+        goto bad_arg;
+    if (!get_bn_from_bin(env, head, &q))
+        goto bad_arg;
+    if (!enif_get_list_cell(env, tail, &head, &tail))
+        goto bad_arg;
+    if (!get_bn_from_bin(env, head, &dmp1))
+        goto bad_arg;
+    if (!enif_get_list_cell(env, tail, &head, &tail))
+        goto bad_arg;
+    if (!get_bn_from_bin(env, head, &dmq1))
+        goto bad_arg;
+    if (!enif_get_list_cell(env, tail, &head, &tail))
+        goto bad_arg;
+    if (!get_bn_from_bin(env, head, &iqmp))
+        goto bad_arg;
+    if (!enif_is_empty_list(env, tail))
+        goto bad_arg;
+
+    if (!RSA_set0_factors(rsa, p, q))
+        goto err;
+    /* rsa now owns p and q */
+    p = NULL;
+    q = NULL;
+
+    if (!RSA_set0_crt_params(rsa, dmp1, dmq1, iqmp))
+        goto err;
+    /* rsa now owns dmp1, dmq1, and iqmp */
+    dmp1 = NULL;
+    dmq1 = NULL;
+    iqmp = NULL;
+
+    return 1;
+
+ bad_arg:
+ err:
+    if (e)
+        BN_free(e);
+    if (n)
+        BN_free(n);
+    if (d)
+        BN_free(d);
+    if (p)
+        BN_free(p);
+    if (q)
+        BN_free(q);
+    if (dmp1)
+        BN_free(dmp1);
+    if (dmq1)
+        BN_free(dmq1);
+    if (iqmp)
+        BN_free(iqmp);
+
+    return 0;
+}
+
+int get_rsa_public_key(ErlNifEnv* env, ERL_NIF_TERM key, RSA *rsa)
+{
+    /* key=[E,N] */
+    ERL_NIF_TERM head, tail;
+    BIGNUM *e = NULL, *n = NULL;
+
+    if (!enif_get_list_cell(env, key, &head, &tail))
+        goto bad_arg;
+    if (!get_bn_from_bin(env, head, &e))
+        goto bad_arg;
+    if (!enif_get_list_cell(env, tail, &head, &tail))
+        goto bad_arg;
+    if (!get_bn_from_bin(env, head, &n))
+        goto bad_arg;
+    if (!enif_is_empty_list(env, tail))
+        goto bad_arg;
+
+    if (!RSA_set0_key(rsa, n, e, NULL))
+        goto err;
+    /* rsa now owns n and e */
+    n = NULL;
+    e = NULL;
+
+    return 1;
+
+ bad_arg:
+ err:
+    if (e)
+        BN_free(e);
+    if (n)
+        BN_free(n);
+
+    return 0;
+}
+
+/* Creates a term which can be parsed by get_rsa_private_key(). This is a list of plain integer binaries (not mpints). */
+static ERL_NIF_TERM put_rsa_private_key(ErlNifEnv* env, const RSA *rsa)
+{
+    ERL_NIF_TERM result[8];
+    const BIGNUM *n = NULL, *e = NULL, *d = NULL, *p = NULL, *q = NULL, *dmp1 = NULL, *dmq1 = NULL, *iqmp = NULL;
+
+    /* Return at least [E,N,D] */
+    RSA_get0_key(rsa, &n, &e, &d);
+
+    if ((result[0] = bin_from_bn(env, e)) == atom_error)  // Exponent E
+        goto err;
+    if ((result[1] = bin_from_bn(env, n)) == atom_error)  // Modulus N = p*q
+        goto err;
+    if ((result[2] = bin_from_bn(env, d)) == atom_error)  // Exponent D
+        goto err;
+
+    /* Check whether the optional additional parameters are available */
+    RSA_get0_factors(rsa, &p, &q);
+    RSA_get0_crt_params(rsa, &dmp1, &dmq1, &iqmp);
+
+    if (p && q && dmp1 && dmq1 && iqmp) {
+        if ((result[3] = bin_from_bn(env, p)) == atom_error)     // Factor p
+            goto err;
+        if ((result[4] = bin_from_bn(env, q)) == atom_error)     // Factor q
+            goto err;
+        if ((result[5] = bin_from_bn(env, dmp1)) == atom_error)  // D mod (p-1)
+            goto err;
+        if ((result[6] = bin_from_bn(env, dmq1)) == atom_error)  // D mod (q-1)
+            goto err;
+        if ((result[7] = bin_from_bn(env, iqmp)) == atom_error)  // (1/q) mod p
+            goto err;
+
+	return enif_make_list_from_array(env, result, 8);
+    } else {
+	return enif_make_list_from_array(env, result, 3);
+    }
+
+ err:
+    return enif_make_badarg(env);
+}
+
+static int check_erlang_interrupt(int maj, int min, BN_GENCB *ctxt)
+{
+    ErlNifEnv *env = BN_GENCB_get_arg(ctxt);
+
+    if (!enif_is_current_process_alive(env)) {
+	return 0;
+    } else {
+	return 1;
+    }
+}
+
+static ERL_NIF_TERM rsa_generate_key(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (ModulusSize, PublicExponent) */
+    ERL_NIF_TERM ret;
+    int modulus_bits;
+    BIGNUM *pub_exp = NULL, *three = NULL;
+    RSA *rsa = NULL;
+    BN_GENCB *intr_cb = NULL;
+#ifndef HAVE_OPAQUE_BN_GENCB
+    BN_GENCB intr_cb_buf;
+#endif
+
+    ASSERT(argc == 2);
+
+    if (!enif_get_int(env, argv[0], &modulus_bits))
+        goto bad_arg;
+    if (modulus_bits < 256)
+        goto bad_arg;
+    if (!get_bn_from_bin(env, argv[1], &pub_exp))
+        goto bad_arg;
+
+    /* Make sure the public exponent is large enough (at least 3).
+     * Without this, RSA_generate_key_ex() can run forever. */
+    if ((three = BN_new()) == NULL)
+        goto err;
+    if (!BN_set_word(three, 3))
+        goto err;
+    if (BN_cmp(pub_exp, three) < 0)
+        goto err;
+
+    /* For large keys, prime generation can take many seconds. Set up
+     * the callback which we use to test whether the process has been
+     * interrupted. */
+#ifdef HAVE_OPAQUE_BN_GENCB
+    if ((intr_cb = BN_GENCB_new()) == NULL)
+        goto err;
+#else
+    intr_cb = &intr_cb_buf;
+#endif
+    BN_GENCB_set(intr_cb, check_erlang_interrupt, env);
+
+    if ((rsa = RSA_new()) == NULL)
+        goto err;
+
+    if (!RSA_generate_key_ex(rsa, modulus_bits, pub_exp, intr_cb))
+        goto err;
+
+    ret = put_rsa_private_key(env, rsa);
+    goto done;
+
+ bad_arg:
+    return enif_make_badarg(env);
+
+ err:
+    ret = atom_error;
+
+ done:
+    if (pub_exp)
+        BN_free(pub_exp);
+    if (three)
+        BN_free(three);
+#ifdef HAVE_OPAQUE_BN_GENCB
+    if (intr_cb)
+        BN_GENCB_free(intr_cb);
+#endif
+    if (rsa)
+        RSA_free(rsa);
+    return ret;
+}
+
+ERL_NIF_TERM rsa_generate_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{
+    /* RSA key generation can take a long time (>1 sec for a large
+     * modulus), so schedule it as a CPU-bound operation. */
+    return enif_schedule_nif(env, "rsa_generate_key",
+			     ERL_NIF_DIRTY_JOB_CPU_BOUND,
+			     rsa_generate_key, argc, argv);
+}
diff --git a/lib/crypto/c_src/rsa.h b/lib/crypto/c_src/rsa.h
new file mode 100644
index 0000000000..69c02aa2cb
--- /dev/null
+++ b/lib/crypto/c_src/rsa.h
@@ -0,0 +1,31 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifndef E_RSA_H__
+#define E_RSA_H__ 1
+
+#include "common.h"
+
+int get_rsa_public_key(ErlNifEnv* env, ERL_NIF_TERM key, RSA *rsa);
+int get_rsa_private_key(ErlNifEnv* env, ERL_NIF_TERM key, RSA *rsa);
+
+ERL_NIF_TERM rsa_generate_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+
+#endif /* E_RSA_H__ */
diff --git a/lib/crypto/c_src/srp.c b/lib/crypto/c_src/srp.c
new file mode 100644
index 0000000000..2979048006
--- /dev/null
+++ b/lib/crypto/c_src/srp.c
@@ -0,0 +1,307 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#include "srp.h"
+#include "bn.h"
+
+ERL_NIF_TERM srp_value_B_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Multiplier, Verifier, Generator, Exponent, Prime) */
+    BIGNUM *bn_verifier = NULL;
+    BIGNUM *bn_exponent = NULL, *bn_generator = NULL, *bn_prime = NULL, *bn_multiplier = NULL, *bn_result = NULL;
+    BN_CTX *bn_ctx = NULL;
+    unsigned char* ptr;
+    int dlen;
+    ERL_NIF_TERM ret;
+
+    CHECK_NO_FIPS_MODE();
+
+    ASSERT(argc == 5);
+
+    if (!get_bn_from_bin(env, argv[0], &bn_multiplier))
+        goto bad_arg;
+    if (!get_bn_from_bin(env, argv[1], &bn_verifier))
+        goto bad_arg;
+    if (!get_bn_from_bin(env, argv[2], &bn_generator))
+        goto bad_arg;
+    if (!get_bn_from_bin(env, argv[3], &bn_exponent))
+        goto bad_arg;
+    if (!get_bn_from_bin(env, argv[4], &bn_prime))
+        goto bad_arg;
+
+    if ((bn_result = BN_new()) == NULL)
+        goto err;
+    if ((bn_ctx = BN_CTX_new()) == NULL)
+        goto err;
+
+    /* B = k*v + g^b % N */
+
+    /* k * v */
+    if (!BN_mod_mul(bn_multiplier, bn_multiplier, bn_verifier, bn_prime, bn_ctx))
+        goto err;
+
+    /* g^b % N */
+    if (!BN_mod_exp(bn_result, bn_generator, bn_exponent, bn_prime, bn_ctx))
+        goto err;
+
+    /* k*v + g^b % N */
+    if (!BN_mod_add(bn_result, bn_result, bn_multiplier, bn_prime, bn_ctx))
+        goto err;
+
+    /* check that B % N != 0, reuse bn_multiplier */
+    if (!BN_nnmod(bn_multiplier, bn_result, bn_prime, bn_ctx))
+        goto err;
+
+    if (BN_is_zero(bn_multiplier))
+        goto err;
+
+    if ((dlen = BN_num_bytes(bn_result)) < 0)
+        goto err;
+    if ((ptr = enif_make_new_binary(env, (size_t)dlen, &ret)) == NULL)
+        goto err;
+
+    if (BN_bn2bin(bn_result, ptr) < 0)
+        goto err;
+
+    goto done;
+
+ bad_arg:
+    ret = enif_make_badarg(env);
+    goto done;
+
+ err:
+    ret = atom_error;
+
+ done:
+    if (bn_multiplier)
+        BN_free(bn_multiplier);
+    if (bn_verifier)
+        BN_free(bn_verifier);
+    if (bn_generator)
+        BN_free(bn_generator);
+    if (bn_exponent)
+        BN_free(bn_exponent);
+    if (bn_prime)
+        BN_free(bn_prime);
+    if (bn_result)
+        BN_free(bn_result);
+    if (bn_ctx)
+        BN_CTX_free(bn_ctx);
+
+    return ret;
+}
+
+ERL_NIF_TERM srp_user_secret_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (a, u, B, Multiplier, Prime, Exponent, Generator) */
+/*
+        <premaster secret> = (B - (k * g^x)) ^ (a + (u * x)) % N
+*/
+    BIGNUM *bn_exponent = NULL, *bn_a = NULL;
+    BIGNUM *bn_u = NULL, *bn_multiplier = NULL, *bn_exp2 = NULL;
+    BIGNUM *bn_base = NULL, *bn_prime = NULL, *bn_generator = NULL;
+    BIGNUM *bn_B = NULL, *bn_result = NULL;
+    BN_CTX *bn_ctx = NULL;
+    unsigned char *ptr;
+    int dlen;
+    ERL_NIF_TERM ret;
+
+    CHECK_NO_FIPS_MODE();
+
+    ASSERT(argc == 7);
+
+    if (!get_bn_from_bin(env, argv[0], &bn_a))
+        goto bad_arg;
+    if (!get_bn_from_bin(env, argv[1], &bn_u))
+        goto bad_arg;
+    if (!get_bn_from_bin(env, argv[2], &bn_B))
+        goto bad_arg;
+    if (!get_bn_from_bin(env, argv[3], &bn_multiplier))
+        goto bad_arg;
+    if (!get_bn_from_bin(env, argv[4], &bn_generator))
+        goto bad_arg;
+    if (!get_bn_from_bin(env, argv[5], &bn_exponent))
+        goto bad_arg;
+    if (!get_bn_from_bin(env, argv[6], &bn_prime))
+        goto bad_arg;
+
+    if ((bn_ctx = BN_CTX_new()) == NULL)
+        goto err;
+    if ((bn_result = BN_new()) == NULL)
+        goto err;
+
+    /* check that B % N != 0 */
+    if (!BN_nnmod(bn_result, bn_B, bn_prime, bn_ctx))
+        goto err;
+    if (BN_is_zero(bn_result))
+        goto err;
+
+    /* (B - (k * g^x)) */
+    if ((bn_base = BN_new()) == NULL)
+        goto err;
+    if (!BN_mod_exp(bn_result, bn_generator, bn_exponent, bn_prime, bn_ctx))
+        goto err;
+    if (!BN_mod_mul(bn_result, bn_multiplier, bn_result, bn_prime, bn_ctx))
+        goto err;
+    if (!BN_mod_sub(bn_base, bn_B, bn_result, bn_prime, bn_ctx))
+        goto err;
+
+    /* a + (u * x) */
+    if ((bn_exp2 = BN_new()) == NULL)
+        goto err;
+    if (!BN_mul(bn_result, bn_u, bn_exponent, bn_ctx))
+        goto err;
+    if (!BN_add(bn_exp2, bn_a, bn_result))
+        goto err;
+
+    /* (B - (k * g^x)) ^ (a + (u * x)) % N */
+    if (!BN_mod_exp(bn_result, bn_base, bn_exp2, bn_prime, bn_ctx))
+        goto err;
+
+    if ((dlen = BN_num_bytes(bn_result)) < 0)
+        goto err;
+    if ((ptr = enif_make_new_binary(env, (size_t)dlen, &ret)) == NULL)
+        goto err;
+
+    if (BN_bn2bin(bn_result, ptr) < 0)
+        goto err;
+
+    goto done;
+
+ bad_arg:
+    ret = enif_make_badarg(env);
+    goto done;
+
+ err:
+    ret = atom_error;
+
+ done:
+    if (bn_a)
+        BN_free(bn_a);
+    if (bn_u)
+        BN_free(bn_u);
+    if (bn_B)
+        BN_free(bn_B);
+    if (bn_multiplier)
+        BN_free(bn_multiplier);
+    if (bn_generator)
+        BN_free(bn_generator);
+    if (bn_exponent)
+        BN_free(bn_exponent);
+    if (bn_prime)
+        BN_free(bn_prime);
+    if (bn_ctx)
+        BN_CTX_free(bn_ctx);
+    if (bn_result)
+        BN_free(bn_result);
+    if (bn_base)
+        BN_free(bn_base);
+    if (bn_exp2)
+        BN_free(bn_exp2);
+
+    return ret;
+}
+
+ERL_NIF_TERM srp_host_secret_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Verifier, b, u, A, Prime) */
+/*
+        <premaster secret> = (A * v^u) ^ b % N
+*/
+    BIGNUM *bn_b = NULL, *bn_verifier = NULL;
+    BIGNUM *bn_prime = NULL, *bn_A = NULL, *bn_u = NULL, *bn_base = NULL, *bn_result = NULL;
+    BN_CTX *bn_ctx = NULL;
+    unsigned char *ptr;
+    int dlen;
+    ERL_NIF_TERM ret;
+
+    CHECK_NO_FIPS_MODE();
+
+    ASSERT(argc == 5);
+
+    if (!get_bn_from_bin(env, argv[0], &bn_verifier))
+        goto bad_arg;
+    if (!get_bn_from_bin(env, argv[1], &bn_b))
+        goto bad_arg;
+    if (!get_bn_from_bin(env, argv[2], &bn_u))
+        goto bad_arg;
+    if (!get_bn_from_bin(env, argv[3], &bn_A))
+        goto bad_arg;
+    if (!get_bn_from_bin(env, argv[4], &bn_prime))
+        goto bad_arg;
+
+    if ((bn_ctx = BN_CTX_new()) == NULL)
+        goto err;
+    if ((bn_result = BN_new()) == NULL)
+        goto err;
+
+    /* check that A % N != 0 */
+    if (!BN_nnmod(bn_result, bn_A, bn_prime, bn_ctx))
+        goto err;
+    if (BN_is_zero(bn_result))
+        goto err;
+
+    /* (A * v^u) */
+    if ((bn_base = BN_new()) == NULL)
+        goto err;
+    if (!BN_mod_exp(bn_base, bn_verifier, bn_u, bn_prime, bn_ctx))
+        goto err;
+    if (!BN_mod_mul(bn_base, bn_A, bn_base, bn_prime, bn_ctx))
+        goto err;
+
+    /* (A * v^u) ^ b % N */
+    if (!BN_mod_exp(bn_result, bn_base, bn_b, bn_prime, bn_ctx))
+        goto err;
+
+    if ((dlen = BN_num_bytes(bn_result)) < 0)
+        goto err;
+    if ((ptr = enif_make_new_binary(env, (size_t)dlen, &ret)) == NULL)
+        goto err;
+
+    if (BN_bn2bin(bn_result, ptr) < 0)
+        goto err;
+
+    goto done;
+
+ bad_arg:
+    ret = enif_make_badarg(env);
+    goto done;
+
+ err:
+    ret = atom_error;
+
+ done:
+    if (bn_verifier)
+        BN_free(bn_verifier);
+    if (bn_b)
+        BN_free(bn_b);
+    if (bn_u)
+        BN_free(bn_u);
+    if (bn_A)
+        BN_free(bn_A);
+    if (bn_prime)
+        BN_free(bn_prime);
+    if (bn_ctx)
+        BN_CTX_free(bn_ctx);
+    if (bn_result)
+        BN_free(bn_result);
+    if (bn_base)
+        BN_free(bn_base);
+
+    return ret;
+}
+
diff --git a/lib/crypto/c_src/srp.h b/lib/crypto/c_src/srp.h
new file mode 100644
index 0000000000..c356690470
--- /dev/null
+++ b/lib/crypto/c_src/srp.h
@@ -0,0 +1,30 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifndef E_SRP_H__
+#define E_SRP_H__ 1
+
+#include "common.h"
+
+ERL_NIF_TERM srp_value_B_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM srp_user_secret_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM srp_host_secret_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+
+#endif /* E_SRP_H__ */
diff --git a/lib/crypto/configure.in b/lib/crypto/configure.in
new file mode 100644
index 0000000000..a3b6673f29
--- /dev/null
+++ b/lib/crypto/configure.in
@@ -0,0 +1,775 @@
+dnl Process this file with autoconf to produce a configure script. -*-m4-*-
+dnl
+dnl %CopyrightBegin%
+dnl
+dnl Copyright Ericsson AB 2018. All Rights Reserved.
+dnl
+dnl Licensed under the Apache License, Version 2.0 (the "License");
+dnl you may not use this file except in compliance with the License.
+dnl You may obtain a copy of the License at
+dnl
+dnl     http://www.apache.org/licenses/LICENSE-2.0
+dnl
+dnl Unless required by applicable law or agreed to in writing, software
+dnl distributed under the License is distributed on an "AS IS" BASIS,
+dnl WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+dnl See the License for the specific language governing permissions and
+dnl limitations under the License.
+dnl
+dnl %CopyrightEnd%
+dnl
+
+dnl define([AC_CACHE_LOAD], )dnl
+dnl define([AC_CACHE_SAVE], )dnl
+
+
+AC_INIT(vsn.mk)
+
+if test -z "$ERL_TOP" || test ! -d "$ERL_TOP" ; then
+  AC_CONFIG_AUX_DIRS(autoconf)
+else
+  erl_top=${ERL_TOP}
+  AC_CONFIG_AUX_DIRS($erl_top/erts/autoconf)
+fi
+
+if test "X$host" != "Xfree_source" -a "X$host" != "Xwin32"; then
+    AC_CANONICAL_HOST
+else
+    host_os=win32
+fi
+
+LM_PRECIOUS_VARS
+
+if test "$cross_compiling" = "yes"; then
+    CROSS_COMPILING=yes
+else
+    CROSS_COMPILING=no
+fi
+AC_SUBST(CROSS_COMPILING)
+
+ERL_XCOMP_SYSROOT_INIT
+
+AC_PROG_CC
+LM_WINDOWS_ENVIRONMENT
+
+ERL_DED
+
+dnl
+dnl SSL, SSH and CRYPTO need the OpenSSL libraries
+dnl
+dnl Check flags --with-ssl, --without-ssl --with-ssl=PATH.
+dnl If no option is given or --with-ssl is set without a path then we
+dnl search for OpenSSL libraries and header files in the standard locations. 
+dnl If set to --without-ssl we disable the use of SSL, SSH and CRYPTO.
+dnl If set to --with-ssl=PATH we use that path as the prefix, i.e. we
+dnl use "PATH/include" and "PATH/lib".
+
+AC_CHECK_SIZEOF(void *)
+
+std_ssl_locations="/usr/local /usr/sfw /usr /opt/local /usr/pkg /usr/local/openssl /usr/lib/openssl /usr/openssl /usr/local/ssl /usr/lib/ssl /usr/ssl /"
+
+AC_ARG_WITH(ssl-zlib,
+AS_HELP_STRING([--with-ssl-zlib=PATH],
+               [specify location of ZLib to be used by OpenSSL])
+AS_HELP_STRING([--with-ssl-zlib],
+               [link SSL with  Zlib (default if found)])
+AS_HELP_STRING([--without-ssl-zlib],
+               [don't link SSL with ZLib]))
+
+if  test "x$with_ssl_zlib" = "xno"; then
+	SSL_LINK_WITH_ZLIB=no
+	STATIC_ZLIB_LIBS=
+elif test "x$with_ssl_zlib" = "xyes" || test "x$with_ssl_zlib" = "x"; then
+	if test $erl_xcomp_without_sysroot = yes; then
+		AC_MSG_WARN([Cannot search for zlib; missing cross system root (erl_xcomp_sysroot).])
+		SSL_LINK_WITH_ZLIB=no	
+		STATIC_ZLIB_LIBS=	
+	elif  test "x$MIXED_CYGWIN" = "xyes" -o "x$MIXED_MSYS" = "xyes"; then
+		SSL_LINK_WITH_ZLIB=no	
+		STATIC_ZLIB_LIBS=	
+	else
+		SSL_LINK_WITH_ZLIB=no
+		STATIC_ZLIB_LIBS=
+		AC_MSG_CHECKING(for static ZLib to be used by SSL in standard locations) 
+		for rdir in $std_ssl_locations; do
+			dir="$erl_xcomp_sysroot$rdir"
+			if test "x$ac_cv_sizeof_void_p" = "x8"; then
+				if test -f "$dir/lib64/libz.a"; then
+					SSL_LINK_WITH_ZLIB=yes
+					STATIC_ZLIB_LIBS="$dir/lib64/libz.a"
+					break
+				elif test -f "$dir/lib/64/libz.a"; then
+					SSL_LINK_WITH_ZLIB=yes
+					STATIC_ZLIB_LIBS="$dir/lib/64/libz.a"
+					break
+				fi
+			fi
+			if test -f "$dir/lib/libz.a"; then
+					SSL_LINK_WITH_ZLIB=yes
+				STATIC_ZLIB_LIBS="$dir/lib/libz.a"
+				break
+			fi
+		done
+		if test "x$SSL_LINK_WITH_ZLIB" = "xno"; then
+		       	AC_MSG_RESULT([no])
+		else
+			AC_MSG_RESULT([$STATIC_ZLIB_LIBS])
+		fi
+	fi				
+else
+	SSL_LINK_WITH_ZLIB=no
+	STATIC_ZLIB_LIBS=
+	if test -f "$with_ssl_zlib/libz.a"; then
+		SSL_LINK_WITH_ZLIB=yes
+		STATIC_ZLIB_LIBS=$with_ssl_zlib/libz.a
+	elif test -f "$with_ssl_zlib/lib/libz.a"; then
+		SSL_LINK_WITH_ZLIB=yes
+		STATIC_ZLIB_LIBS=$with_ssl_zlib/lib/libz.a
+	fi
+	if test "x$ac_cv_sizeof_void_p" = "x8"; then
+		if test -f "$with_ssl_zlib/lib64/libz.a"; then
+			SSL_LINK_WITH_ZLIB=yes
+			STATIC_ZLIB_LIBS=$with_ssl_zlib/lib64/libz.a
+		elif test -f "$with_ssl_zlib/lib/64/libz.a"; then
+			SSL_LINK_WITH_ZLIB=yes
+			STATIC_ZLIB_LIBS=$with_ssl_zlib/lib/64/libz.a
+		fi
+	fi
+	if test "x$SSL_LINK_WITH_ZLIB" = "xno"; then
+	       	AC_MSG_ERROR(Invalid path to option --with-ssl-zlib=PATH)
+	fi
+fi
+		
+			
+AC_ARG_WITH(ssl,
+AS_HELP_STRING([--with-ssl=PATH], [specify location of OpenSSL include and lib])
+AS_HELP_STRING([--with-ssl], [use SSL (default)])
+AS_HELP_STRING([--without-ssl], [don't use SSL]))
+
+AC_ARG_WITH(ssl-incl,
+AS_HELP_STRING([--with-ssl-incl=PATH], [location of OpenSSL include dir, if different than specified by --with-ssl=PATH]),
+[
+case X$with_ssl in
+    X | Xyes | Xno) AC_MSG_ERROR([--with-ssl-incl=PATH set without --with-ssl=PATH]);;
+esac
+],
+[with_ssl_incl=$with_ssl]) #default
+
+AC_ARG_WITH(ssl-rpath,
+AS_HELP_STRING([--with-ssl-rpath=yes|no|PATHS],
+               [runtime library path for OpenSSL. Default is "yes", which equates to a
+	       number of standard locations. If "no", then no runtime
+	       library paths will be used. Anything else should be a
+	       comma separated list of paths.]),
+[
+case X$with_ssl in
+    Xno) AC_MSG_ERROR([--with-ssl-rpath set without --with-ssl]);;
+esac
+],
+[with_ssl_rpath=yes]) #default
+
+
+AC_ARG_ENABLE(dynamic-ssl-lib,
+AS_HELP_STRING([--disable-dynamic-ssl-lib],
+               [disable using dynamic openssl libraries]),
+[ case "$enableval" in
+    no) enable_dynamic_ssl=no ;;
+    *)  enable_dynamic_ssl=yes ;;
+  esac ], enable_dynamic_ssl=yes)
+
+#----------------------------------------------------------------------
+# We actually might do the SSL tests twice due to late discovery of 
+# kerberos problems with static linking, in case we redo it all trying
+# dynamic SSL libraries instead.
+#----------------------------------------------------------------------
+
+ssl_done=no
+
+while test "x$ssl_done" != "xyes"; do
+
+ssl_done=yes # Default only one run
+
+# Remove all SKIP files from previous runs
+for a in ssl crypto ssh; do
+  rm -f "$ERL_TOP/lib/$a/SKIP"
+done
+
+SSL_DYNAMIC_ONLY=$enable_dynamic_ssl
+SSL_STATIC_ONLY=no
+
+case "$erl_xcomp_without_sysroot-$with_ssl" in
+  yes-* | no-no)
+    SSL_APP=
+    CRYPTO_APP=
+    SSH_APP=
+    if test "$with_ssl" = "no"; then
+	skip="User gave --without-ssl option"
+    else
+	skip="Cannot search for ssl; missing cross system root (erl_xcomp_sysroot)."
+    fi
+    for a in ssl crypto ssh; do
+        echo "$skip" > $ERL_TOP/lib/$a/SKIP
+    done
+    ;;
+  no-yes | no- )
+    # On windows, we could try to find the installation
+    # of Shining Light OpenSSL, which can be found by poking in
+    # the uninstall section in the registry, it's worth a try...
+    extra_dir=""
+    if  test "x$MIXED_CYGWIN" = "xyes"; then
+    	AC_CHECK_PROG(REGTOOL, regtool, regtool, false)
+	if test "$ac_cv_prog_REGTOOL" != false; then
+		wrp="/machine/software/microsoft/windows/currentversion/"
+	   	if test "x$ac_cv_sizeof_void_p" = "x8"; then
+		   urp="uninstall/openssl (64-bit)_is1/inno setup: app path"
+		   regtool_subsystem=-w
+		else
+		   urp="uninstall/openssl (32-bit)_is1/inno setup: app path"
+		   regtool_subsystem=-W
+		fi	
+		rp="$wrp$urp"
+		if regtool -q $regtool_subsystem get "$rp" > /dev/null; then
+		   true
+		else
+		   # Fallback to unspecified wordlength
+		   urp="uninstall/openssl_is1/inno setup: app path"
+		   rp="$wrp$urp"
+		fi	
+		if regtool -q $regtool_subsystem get "$rp" > /dev/null; then
+			ssl_install_dir=`regtool -q $regtool_subsystem get "$rp"`
+			# Try hard to get rid of spaces...
+			if cygpath -d "$ssl_install_dir" > /dev/null 2>&1; then
+				ssl_install_dir=`cygpath -d "$ssl_install_dir"`
+			fi
+			extra_dir=`cygpath $ssl_install_dir`
+		fi
+	fi
+    elif test "x$MIXED_MSYS" = "xyes"; then
+    	AC_CHECK_PROG(REGTOOL, reg_query.sh, reg_query.sh, false)
+	if test "$ac_cv_prog_REGTOOL" != false; then
+	   	if test "x$ac_cv_sizeof_void_p" = "x8"; then
+		   rp="HKLM/SOFTWARE/Microsoft/Windows/CurrentVersion/Uninstall/OpenSSL (64-bit)_is1"
+		else
+		   rp="HKLM/SOFTWARE/Microsoft/Windows/CurrentVersion/Uninstall/OpenSSL_is1"
+		fi	
+		key="Inno Setup: App Path"
+		if "$ac_cv_prog_REGTOOL" "$rp" "$key" > /dev/null; then
+			ssl_install_dir=`"$ac_cv_prog_REGTOOL" "$rp" "$key"`
+			extra_dir=`win2msys_path.sh "$ssl_install_dir"`
+		fi
+	fi
+    fi
+    # We search for OpenSSL in the common OS standard locations.
+    SSL_APP=ssl
+    CRYPTO_APP=crypto
+    SSH_APP=ssh
+
+    SSL_CRYPTO_LIBNAME=crypto
+    SSL_SSL_LIBNAME=ssl
+    
+    if  test "x$MIXED_CYGWIN" = "xyes" -o "x$MIXED_MSYS" = "xyes"; then
+    	if test "x$ac_cv_sizeof_void_p" = "x8"; then
+	  std_win_ssl_locations="/cygdrive/c/OpenSSL-Win64 /c/OpenSSL-Win64 /opt/local64/pgm/OpenSSL"
+	else
+	  std_win_ssl_locations="/cygdrive/c/OpenSSL-Win32 /c/OpenSSL-Win32 /cygdrive/c/OpenSSL /c/OpenSSL /opt/local/pgm/OpenSSL"
+	fi
+    else
+        std_win_ssl_locations=""
+    fi
+
+
+    AC_MSG_CHECKING(for OpenSSL >= 0.9.8c in standard locations)
+    for rdir in $extra_dir $std_win_ssl_locations $std_ssl_locations; do
+	dir="$erl_xcomp_sysroot$rdir"
+	if test -f "$erl_xcomp_isysroot$rdir/include/openssl/opensslv.h"; then
+		is_real_ssl=yes
+		SSL_INCDIR="$dir"
+		if test "x$MIXED_CYGWIN" = "xyes" -o "x$MIXED_MSYS" = "xyes"; then
+			if test -f "$dir/lib/VC/libeay32.lib"; then
+				SSL_RUNTIME_LIBDIR="$rdir/lib/VC"
+				SSL_LIBDIR="$dir/lib/VC"
+				SSL_CRYPTO_LIBNAME=libeay32
+				SSL_SSL_LIBNAME=ssleay32
+			elif test -f "$dir/lib/VC/openssl.lib"; then 
+				SSL_RUNTIME_LIBDIR="$rdir/lib/VC"
+				SSL_LIBDIR="$dir/lib/VC"
+			elif test -f $dir/lib/VC/libeay32MD.lib; then
+		            SSL_CRYPTO_LIBNAME=libeay32MD
+		            SSL_SSL_LIBNAME=ssleay32MD
+			    if test "x$enable_dynamic_ssl" = "xno" && \
+	                       test -f  $dir/lib/VC/static/libeay32MD.lib; then
+				  SSL_RUNTIME_LIBDIR="$rdir/lib/VC/static"
+				  SSL_LIBDIR="$dir/lib/VC/static"
+		            else
+			          SSL_RUNTIME_LIBDIR="$rdir/lib/VC"
+				  SSL_LIBDIR="$dir/lib/VC"
+                            fi 
+			elif test -f "$dir/lib/libeay32.lib"; then
+				SSL_RUNTIME_LIBDIR="$rdir/lib"
+				SSL_LIBDIR="$dir/lib"
+				SSL_CRYPTO_LIBNAME=libeay32
+				SSL_SSL_LIBNAME=ssleay32
+			elif test -f "$dir/lib/openssl.lib"; then
+				SSL_RUNTIME_LIBDIR="$rdir/lib"
+				SSL_LIBDIR="$dir/lib"
+			else
+				is_real_ssl=no
+			fi
+		elif test -f "$dir/lib/powerpc/libsslcrypto.a"; then
+			SSL_CRYPTO_LIBNAME=sslcrypto
+			SSL_LIBDIR="$dir/lib/powerpc/"
+			SSL_RUNTIME_LIBDIR="$rdir/lib/powerpc/"
+		else
+			if test "x$ac_cv_sizeof_void_p" = "x8"; then
+				if test -f "$dir/lib64/libcrypto.a"; then
+					SSL_RUNTIME_LIBDIR="$rdir/lib64"
+					SSL_LIBDIR="$dir/lib64"
+				elif test -f "$dir/lib/64/libcrypto.a"; then
+					SSL_RUNTIME_LIBDIR="$rdir/lib/64"
+					SSL_LIBDIR="$dir/lib/64"
+				elif test -f "$dir/lib64/libcrypto.so"; then
+					SSL_RUNTIME_LIBDIR="$rdir/lib64"
+					SSL_LIBDIR="$dir/lib64"
+				elif test -f "$dir/lib/64/libcrypto.so"; then
+					SSL_RUNTIME_LIBDIR="$rdir/lib/64"
+					SSL_LIBDIR="$dir/lib/64"
+				else
+					SSL_RUNTIME_LIBDIR="$rdir/lib"
+					SSL_LIBDIR="$dir/lib"
+				fi
+			else	 
+				SSL_RUNTIME_LIBDIR="$rdir/lib"
+				SSL_LIBDIR="$dir/lib"
+			fi
+		fi
+		if test '!' -f "$SSL_LIBDIR/lib${SSL_CRYPTO_LIBNAME}.a"; then
+			SSL_DYNAMIC_ONLY=yes
+		elif test '!' -f "$SSL_LIBDIR/lib${SSL_CRYPTO_LIBNAME}.so" -a '!' -f "$SSL_LIBDIR/lib${SSL_CRYPTO_LIBNAME}.dylib"; then
+			SSL_STATIC_ONLY=yes
+		fi
+		SSL_BINDIR="$rdir/bin"
+		if test "x$is_real_ssl" = "xyes" ; then
+			SSL_INCLUDE="-I$dir/include"
+			old_CPPFLAGS=$CPPFLAGS
+			CPPFLAGS=$SSL_INCLUDE
+			AC_EGREP_CPP(^yes$,[
+#include <openssl/opensslv.h>
+#if OPENSSL_VERSION_NUMBER >= 0x0090803fL
+yes
+#endif
+			],[
+			ssl_found=yes
+			],[
+			SSL_APP=
+			ssl_found=no
+         		])
+         		CPPFLAGS=$old_CPPFLAGS
+			if test "x$ssl_found" = "xyes"; then
+			   	if test "x$MIXED_CYGWIN" = "xyes" -o "x$MIXED_MSYS" = "xyes"; then
+				   	ssl_linkable=yes
+				elif test "x${SSL_CRYPTO_LIBNAME}" = "xsslcrypto"; then
+				# This should only be triggered seen OSE
+					ssl_linkable=yes
+				else
+					saveCFLAGS="$CFLAGS"
+ 					saveLDFLAGS="$LDFLAGS"
+					saveLIBS="$LIBS"
+ 					CFLAGS="$CFLAGS $SSL_INCLUDE"
+					if test "x$SSL_STATIC_ONLY" = "xyes"; then
+						LIBS="${SSL_LIBDIR}/lib${SSL_CRYPTO_LIBNAME}.a"
+					else
+						LDFLAGS="$LDFLAGS -L$SSL_LIBDIR"
+						LIBS="$LIBS -l${SSL_CRYPTO_LIBNAME}"
+					fi
+ 					AC_TRY_LINK([
+					#include <stdio.h>
+ 					#include <openssl/hmac.h>],
+ 					[ 
+					HMAC(0, 0, 0, 0, 0, 0, 0);
+ 					],
+ 					[ssl_linkable=yes],
+ 					[ssl_linkable=no])
+ 					CFLAGS="$saveCFLAGS"
+ 					LDFLAGS="$saveLDFLAGS"
+					LIBS="$saveLIBS"
+				fi
+ 			fi
+	 		if test "x$ssl_found" = "xyes" && test "x$ssl_linkable" = "xyes"; then
+			 	AC_MSG_RESULT([$dir])
+	   			break;
+         		fi
+		fi	
+       fi
+    done
+
+    if test "x$ssl_found" != "xyes" ; then
+	dnl 
+	dnl If no SSL found above, check whether we are running on OpenBSD.
+	dnl
+	case $host_os in
+	openbsd*)
+	       if test -f "$erl_xcomp_isysroot/usr/include/openssl/opensslv.h"; then
+		  # Trust OpenBSD to have everything the in the correct locations.
+		  ssl_found=yes
+		  ssl_linkable=yes
+		  SSL_INCDIR="$erl_xcomp_sysroot/usr"
+	          AC_MSG_RESULT([$SSL_INCDIR])
+		  SSL_RUNTIME_LIB="/usr/lib"
+		  SSL_LIB="$erl_xcomp_sysroot/usr/lib"
+		  SSL_BINDIR="/usr/sbin"
+		  dnl OpenBSD requires us to link with -L and -l
+		  SSL_DYNAMIC_ONLY="yes" 
+		fi
+		;;
+	esac
+    fi
+dnl		Now, certain linuxes have a 64bit libcrypto
+dnl		that cannot build shared libraries (i.e. not PIC)
+dnl		One could argue that this is wrong, but
+dnl		so it is - be adoptable
+    if test "$ssl_found" = "yes" && test "$ssl_linkable" = "yes" && test "$SSL_DYNAMIC_ONLY" != "yes"; then
+	case $host_os in
+		linux*)
+			saveCFLAGS="$CFLAGS"
+ 			saveLDFLAGS="$LDFLAGS"
+			saveLIBS="$LIBS"
+ 			CFLAGS="$DED_CFLAGS $SSL_INCLUDE"
+ 			LDFLAGS="$DED_LDFLAGS"
+			LIBS="$SSL_LIBDIR/libcrypto.a $STATIC_ZLIB_LIBS"
+ 			AC_TRY_LINK([
+			#include <stdio.h>
+ 			#include <openssl/hmac.h>],
+ 			[ 
+			HMAC(0, 0, 0, 0, 0, 0, 0);
+ 			],
+ 			[ssl_dyn_linkable=yes],
+ 			[ssl_dyn_linkable=no])
+ 			CFLAGS="$saveCFLAGS"
+ 			LDFLAGS="$saveLDFLAGS"
+			LIBS="$saveLIBS"
+			if test "x$ssl_dyn_linkable" != "xyes"; then
+				SSL_DYNAMIC_ONLY=yes
+				AC_MSG_WARN([SSL will be linked against dynamic lib as static lib is not purely relocatable])
+			fi
+			;;
+	esac
+    fi					
+	
+				
+
+
+    if test "x$ssl_found" != "xyes" || test  "x$ssl_linkable" != "xyes"; then
+       if test "x$ssl_found" = "xyes"; then 
+       		AC_MSG_RESULT([found; but not usable])
+       else
+       		AC_MSG_RESULT([no])
+       fi
+       SSL_APP=
+       CRYPTO_APP=
+       SSH_APP=
+       AC_MSG_WARN([No (usable) OpenSSL found, skipping ssl, ssh and crypto applications])
+
+       for a in ssl crypto ssh; do
+           echo "No usable OpenSSL found" > $ERL_TOP/lib/$a/SKIP
+       done
+    fi
+    ;;
+  *)
+    # Option given with PATH to package
+    if test ! -d "$with_ssl" ; then
+       AC_MSG_ERROR(Invalid path to option --with-ssl=PATH)
+    fi
+    if test ! -d "$with_ssl_incl" ; then
+       AC_MSG_ERROR(Invalid path to option --with-ssl-incl=PATH)
+    fi
+    SSL_INCDIR="$with_ssl_incl"
+    SSL_CRYPTO_LIBNAME=crypto
+    SSL_SSL_LIBNAME=ssl
+    if test "x$MIXED_CYGWIN" = "xyes" -o "x$MIXED_MSYS" = "xyes" && test -d "$with_ssl/lib/VC"; then
+	if test -f "$with_ssl/lib/VC/libeay32.lib"; then
+	    SSL_LIBDIR="$with_ssl/lib/VC"
+	    SSL_CRYPTO_LIBNAME=libeay32
+	    SSL_SSL_LIBNAME=ssleay32
+	elif test -f "$with_ssl/lib/VC/openssl.lib"; then 
+	    SSL_LIBDIR="$with_ssl/lib/VC"
+	elif test -f $with_ssl/lib/VC/libeay32MD.lib; then
+	    SSL_CRYPTO_LIBNAME=libeay32MD
+            SSL_SSL_LIBNAME=ssleay32MD
+	    if test "x$enable_dynamic_ssl" = "xno" && \
+	       test -f  $with_ssl/lib/VC/static/libeay32MD.lib; then
+		SSL_LIBDIR="$with_ssl/lib/VC/static"
+	    else
+		SSL_LIBDIR="$with_ssl/lib/VC"
+            fi 
+	elif test -f "$with_ssl/lib/libeay32.lib"; then
+	    SSL_LIBDIR="$with_ssl/lib"
+	    SSL_CRYPTO_LIBNAME=libeay32
+	    SSL_SSL_LIBNAME=ssleay32
+	else
+	    # This probably wont work, but that's what the user said, so...
+	    SSL_LIBDIR="$with_ssl/lib"
+	fi
+    elif test -f "$dir/lib/powerpc/libsslcrypto.a"; then
+	    SSL_CRYPTO_LIBNAME=sslcrypto
+	    SSL_LIBDIR="$with_ssl/lib/powerpc/"
+    elif test "x$ac_cv_sizeof_void_p" = "x8"; then
+	if test -f "$with_ssl/lib64/libcrypto.a"; then
+		SSL_LIBDIR="$with_ssl/lib64"
+	elif test -f "$with_ssl/lib/64/libcrypto.a"; then
+		SSL_LIBDIR="$with_ssl/lib/64"
+	elif test -f "$with_ssl/lib64/libcrypto.so"; then
+		SSL_LIBDIR="$with_ssl/lib64"
+	elif test -f "$with_ssl/lib/64/libcrypto.so"; then
+		SSL_LIBDIR="$with_ssl/lib/64"
+	else
+		SSL_LIBDIR="$with_ssl/lib"
+	fi
+    else	 
+	SSL_LIBDIR="$with_ssl/lib"
+    fi
+    if test '!' -f "${SSL_LIBDIR}/lib${SSL_CRYPTO_LIBNAME}.a"; then
+	SSL_DYNAMIC_ONLY=yes
+    elif test '!' -f ${SSL_LIBDIR}/lib${SSL_CRYPTO_LIBNAME}.so -a '!' -f "$SSL_LIBDIR/lib${SSL_CRYPTO_LIBNAME}.dylib"; then
+	SSL_STATIC_ONLY=yes
+    fi
+    SSL_INCLUDE="-I$with_ssl_incl/include"
+    SSL_APP=ssl
+    CRYPTO_APP=crypto
+    SSH_APP=ssh
+    if test "$cross_compiling" = "yes"; then
+	SSL_RUNTIME_LIBDIR=`echo "$SSL_LIBDIR" | sed -n "s|^$erl_xcomp_sysroot\(/*\)\(.*\)\$|/\2|p"`
+    else
+	SSL_RUNTIME_LIBDIR="$SSL_LIBDIR"
+    fi
+esac
+
+if test "x$SSL_APP" != "x" ; then
+    dnl We found openssl, now check if we use kerberos 5 support
+    dnl FIXME: Do we still support platforms that have Kerberos?
+    AC_MSG_CHECKING(for OpenSSL kerberos 5 support)
+    old_CPPFLAGS=$CPPFLAGS
+    CPPFLAGS=$SSL_INCLUDE
+    AC_EGREP_CPP(^yes$,[
+#include <openssl/opensslv.h>
+#include <openssl/opensslconf.h>
+#if OPENSSL_VERSION_NUMBER < 0x1010000fL && !defined(OPENSSL_NO_KRB5)
+yes
+#endif
+      ],[
+      AC_MSG_RESULT([yes])
+      ssl_krb5_enabled=yes
+      if test "x$SSL_DYNAMIC_ONLY" != "xyes"; then
+          if test -f "$SSL_LIBDIR/libkrb5.a"; then
+              SSL_LINK_WITH_KERBEROS=yes
+	      STATIC_KERBEROS_LIBS="$SSL_LIBDIR/libkrb5.a"
+	      if test -f "$SSL_LIBDIR/libkrb5support.a"; then
+		  STATIC_KERBEROS_LIBS="$STATIC_KERBEROS_LIBS $SSL_LIBDIR/libkrb5support.a"
+	      fi
+	      if test -f "$SSL_LIBDIR/libk5crypto.a"; then
+		  STATIC_KERBEROS_LIBS="$STATIC_KERBEROS_LIBS $SSL_LIBDIR/libk5crypto.a"
+	      fi
+	      if test -f "$SSL_LIBDIR/libresolv.a"; then
+		  STATIC_KERBEROS_LIBS="$STATIC_KERBEROS_LIBS $SSL_LIBDIR/libresolv.a"
+	      fi
+	      if test -f "$SSL_LIBDIR/libcom_err.a"; then
+		  STATIC_KERBEROS_LIBS="$STATIC_KERBEROS_LIBS $SSL_LIBDIR/libcom_err.a"
+	      fi
+          else
+	      AC_MSG_WARN([Kerberos needed but no kerberos static libraries found])
+	      AC_MSG_WARN([Rescanning for dynamic SSL libraries])
+	      enable_dynamic_ssl=yes
+	      ssl_done=no
+	      SSL_LINK_WITH_KERBEROS=no
+	      STATIC_KERBEROS_LIBS=""
+	      ssl_krb5_enabled=no
+	      SSL_WITH_KERBEROS=no
+          fi
+      else 	
+	      SSL_LINK_WITH_KERBEROS=no
+	      STATIC_KERBEROS_LIBS=""
+      fi
+      ],[
+      AC_MSG_RESULT([no])
+      ssl_krb5_enabled=no
+      SSL_WITH_KERBEROS=no
+      ])
+    CPPFLAGS=$old_CPPFLAGS
+    SSL_KRB5_INCLUDE=
+    if test "x$ssl_krb5_enabled" = "xyes" ; then
+        AC_MSG_CHECKING(for krb5.h in standard locations)
+	for dir in $extra_dir "$SSL_INCDIR/include" "$SSL_INCDIR/include/openssl" \
+		"$SSL_INCDIR/include/kerberos" \
+		"$erl_xcomp_isysroot/cygdrive/c/kerberos/include" \
+		"$erl_xcomp_isysroot/usr/local/kerberos/include" \
+		"$erl_xcomp_isysroot/usr/kerberos/include" \
+		"$erl_xcomp_isysroot/usr/include"
+	do
+            if test -f "$dir/krb5.h" ; then
+                SSL_KRB5_INCLUDE="$dir"
+		break
+            fi
+        done
+        if test "x$SSL_KRB5_INCLUDE" = "x" ; then
+	    AC_MSG_RESULT([not found])
+	    SSL_APP=
+	    CRYPTO_APP=
+	    SSH_APP=
+	    AC_MSG_WARN([OpenSSL is configured for kerberos but no krb5.h found])
+	    for a in ssl crypto ssh ; do
+	 	echo "OpenSSL is configured for kerberos but no krb5.h found" > $ERL_TOP/lib/$a/SKIP
+	    done
+        else
+            AC_MSG_RESULT([found in $SSL_KRB5_INCLUDE])
+            SSL_INCLUDE="$SSL_INCLUDE -I$SSL_KRB5_INCLUDE"
+        fi
+    fi
+fi
+
+done # while test ssl_done != yes
+
+SSL_DED_LD_RUNTIME_LIBRARY_PATH=
+ded_ld_rflg="$DED_LD_FLAG_RUNTIME_LIBRARY_PATH"
+
+
+case "$with_ssl_rpath" in
+
+yes)   # Use standard lib locations for ssl runtime library path
+
+  if test "$SSL_APP" != "" && test "$SSL_DYNAMIC_ONLY" = "yes" && test "$ded_ld_rflg" != ""; then
+
+    AC_MSG_CHECKING(for ssl runtime library path to use)
+
+    libdirs="/lib"
+
+    if test "$ac_cv_sizeof_void_p" = "8"; then
+	dir_lib64=no
+	dir_lib_64=no
+
+	case "$SSL_RUNTIME_LIBDIR" in
+	    */lib/64 | */lib/64/ ) dir_lib_64=yes;;
+	    */lib64 | */lib64/ ) dir_lib64=yes;;
+	    *) ;;
+	esac
+
+	for dir in $std_ssl_locations; do
+	    test $dir_lib_64 = no &&
+	    	test -d "$erl_xcomp_sysroot$dir/lib/64" &&
+		    dir_lib_64=yes
+	    test $dir_lib64 = no &&
+		test -d "$erl_xcomp_sysroot$dir/lib64" &&
+		    dir_lib64=yes
+	done
+
+	test $dir_lib_64 = yes && libdirs="/lib/64 $libdirs"
+	test $dir_lib64 = yes && libdirs="/lib64 $libdirs"
+    fi
+
+    for type in std x_std curr; do
+
+        ded_ld_rpath="$ded_ld_rflg$SSL_RUNTIME_LIBDIR"
+	rpath="$SSL_RUNTIME_LIBDIR"
+
+	if test $type != curr; then
+	    for ldir in $libdirs; do
+		for dir in $std_ssl_locations; do
+		    test "$SSL_LIBDIR" != "$dir$ldir" || continue
+		    test $type != x_std || test -d "$dir$ldir" || continue
+		    if test "$dir" = "/"; then
+			libdir="$ldir"
+		    else
+			libdir="$dir$ldir"
+		    fi
+		    ded_ld_rpath="$ded_ld_rpath $ded_ld_rflg$libdir"
+		    rpath="$rpath:$libdir"
+                done
+	    done
+	fi
+
+	saveCFLAGS="$CFLAGS"
+	saveLDFLAGS="$LDFLAGS"
+	saveLIBS="$LIBS"
+	CFLAGS="$CFLAGS $SSL_INCLUDE"
+	LDFLAGS="$LDFLAGS $ld_rpath -L$SSL_LIBDIR"
+	LIBS="-lcrypto"
+	AC_TRY_LINK([
+                         #include <stdio.h>
+                         #include <openssl/hmac.h>
+                    ],
+                    [ 
+			 HMAC(0, 0, 0, 0, 0, 0, 0);
+                    ],
+                    [rpath_success=yes],
+                    [rpath_success=no])
+	CFLAGS="$saveCFLAGS"
+	LDFLAGS="$saveLDFLAGS"
+	LIBS="$saveLIBS"
+
+	test "$rpath_success" = "yes" && break
+    done
+
+    test "$rpath_success" = "yes" || { ded_ld_rpath=; rpath=; }
+
+    SSL_DED_LD_RUNTIME_LIBRARY_PATH="$ded_ld_rpath"
+
+    AC_MSG_RESULT([$rpath])
+    test "$rpath" != "" || AC_MSG_WARN([Cannot set run path during linking])
+  fi
+  ;;
+
+no)   # Use no ssl runtime library path
+  SSL_DED_LD_RUNTIME_LIBRARY_PATH=
+  ;;
+
+*)    # Use ssl runtime library paths set by --with-ssl-rpath (without any check)
+  ded_ld_rpath=
+  delimit=
+  for dir in `echo $with_ssl_rpath | sed "s/,/ /g"`; do
+      ded_ld_rpath="$ded_ld_rpath$delimit$ded_ld_rflg$dir"
+      delimit=" "
+  done
+  SSL_DED_LD_RUNTIME_LIBRARY_PATH="$ded_ld_rpath"
+  ;;
+
+esac
+
+
+AC_ARG_ENABLE(fips,
+AS_HELP_STRING([--enable-fips], [enable OpenSSL FIPS mode support])
+AS_HELP_STRING([--disable-fips], [disable OpenSSL FIPS mode support (default)]),
+[ case "$enableval" in
+    yes) enable_fips_support=yes ;;
+    *)   enable_fips_support=no ;;
+  esac ], enable_fips_support=no)
+
+if test "x$enable_fips_support" = "xyes" && test "$CRYPTO_APP" != ""; then
+   saveCFLAGS="$CFLAGS"
+   saveLDFLAGS="$LDFLAGS"
+   saveLIBS="$LIBS"
+   CFLAGS="$CFLAGS $SSL_INCLUDE"
+   LDFLAGS="$LDFLAGS $ded_ld_rpath -L$SSL_LIBDIR"
+   LIBS="-lcrypto"
+   AC_CHECK_FUNC([FIPS_mode_set],
+   [SSL_FLAGS="-DFIPS_SUPPORT"],
+   [SSL_FLAGS=])
+   CFLAGS="$saveCFLAGS"
+   LDFLAGS="$saveLDFLAGS"
+   LIBS="$saveLIBS"
+else
+   SSL_FLAGS=
+fi
+
+AC_SUBST(SSL_INCLUDE)
+AC_SUBST(SSL_INCDIR)
+AC_SUBST(SSL_LIBDIR)
+AC_SUBST(SSL_FLAGS)
+AC_SUBST(SSL_CRYPTO_LIBNAME)
+AC_SUBST(SSL_SSL_LIBNAME)
+AC_SUBST(SSL_DED_LD_RUNTIME_LIBRARY_PATH)
+AC_SUBST(SSL_DYNAMIC_ONLY)
+AC_SUBST(SSL_LINK_WITH_KERBEROS)
+AC_SUBST(STATIC_KERBEROS_LIBS)
+AC_SUBST(SSL_LINK_WITH_ZLIB)
+AC_SUBST(STATIC_ZLIB_LIBS)
+
+AC_OUTPUT(c_src/$host/Makefile:c_src/Makefile.in)
+
diff --git a/lib/crypto/doc/src/crypto.xml b/lib/crypto/doc/src/crypto.xml
index b33db0d6e4..8a4fad67de 100644
--- a/lib/crypto/doc/src/crypto.xml
+++ b/lib/crypto/doc/src/crypto.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8" ?>
 <!DOCTYPE erlref SYSTEM "erlref.dtd">
 
 <erlref>
@@ -23,7 +22,7 @@
 
     <title>crypto</title>
   </header>
-  <module>crypto</module>
+  <module since="">crypto</module>
   <modulesummary>Crypto Functions</modulesummary>
   <description>
     <p>This module provides a set of cryptographic functions.
@@ -45,6 +44,10 @@
 		  SHA-3 Standard: Permutation-Based Hash and Extendable-Output Functions [FIPS PUB 202]
 		</url>		  
 	      </item>
+            <tag>BLAKE2</tag>
+              <item>
+                <url href="https://blake2.net/">BLAKE2 — fast secure hashing</url>
+              </item>
 	    <tag>MD5</tag>
 	    <item>
 	      <url href="http://www.ietf.org/rfc/rfc1321.txt">The MD5 Message Digest Algorithm [RFC 1321]</url>
@@ -189,17 +192,28 @@
   <datatypes>
     <datatype_title>Ciphers</datatype_title>
     <datatype>
+      <name name="cipher"/>
       <name name="stream_cipher"/>
+      <name name="block_cipher"/>
+      <desc>
+	<p>Ciphers known byt the CRYPTO application. Note that this list might be reduced if the
+	underlying libcrypto does not support all of them.</p>
+      </desc>
+    </datatype>
+
+    <datatype>
+      <name name="stream_cipher_iv"/>
+      <name name="stream_cipher_no_iv"/>
       <desc>
 	<p>Stream ciphers for
-	<seealso marker="#stream_encrypt-2">stream_encrypt/2</seealso> and
-	<seealso marker="#stream_decrypt-2">stream_decrypt/2</seealso> .
+	<seealso marker="#stream_init-3">stream_init/3</seealso> and
+	<seealso marker="#stream_init-2">stream_init/2</seealso> .
 	</p>
       </desc>
     </datatype>
 
     <datatype>
-      <name name="block_cipher_with_iv"/>
+      <name name="block_cipher_iv"/>
       <name name="cbc_cipher"/>
       <name name="cfb_cipher"/>
       <desc>
@@ -211,7 +225,19 @@
     </datatype>
 
     <datatype>
-      <name name="block_cipher_without_iv"/>
+      <name name="alias_cfb"/>
+      <name name="alias_cbc"/>
+      <desc>
+	<p>Names that are replaced by more common names. They may deprecated in futer releases.</p>
+	<p><c>des3_cbc</c> and <c>des_ede3</c> should be replaced by <c>des_ede3_cbc</c></p>
+	<p><c>des_ede3_cbf</c>, <c>des3_cbf</c> and <c>des3_cfb</c> should be replaced by <c>des_ede3_cfb</c>.</p>
+	<p><c>aes_cbc128</c> should be replaced by <c>aes_128_cbc</c>.</p>
+	<p><c>aes_cbc256</c> should be replaced by <c>aes_256_cbc</c>.</p>
+      </desc>
+    </datatype>
+
+    <datatype>
+      <name name="block_cipher_no_iv"/>
       <name name="ecb_cipher"/>
       <desc>
 	<p>Block ciphers without initialization vector for
@@ -231,19 +257,16 @@
       </desc>
     </datatype>
 
-    <datatype_title>Digests</datatype_title>
+    <datatype_title>Digests and hash</datatype_title>
     <datatype>
-      <name name="sha1"/>
-      <name name="sha2"/>
-      <name name="sha3"/>
+      <name name="hash_algorithm"/>
       <desc>
       </desc>
     </datatype>
 
     <datatype>
-      <name name="compatibility_only_hash"/>
+      <name name="hmac_hash_algorithm"/>
       <desc>
-	<p>The <c>compatibility_only_hash()</c> algorithms are recommended only for compatibility with existing applications.</p>
       </desc>
     </datatype>
 
@@ -265,6 +288,17 @@
       </desc>
     </datatype>
 
+    <datatype>
+      <name name="sha1"/>
+      <name name="sha2"/>
+      <name name="sha3"/>
+      <name name="blake2"/>
+      <name name="compatibility_only_hash"/>
+      <desc>
+	<p>The <c>compatibility_only_hash()</c> algorithms are recommended only for compatibility with existing applications.</p>
+      </desc>
+    </datatype>
+
     <datatype_title>Elliptic Curves</datatype_title>
     <datatype>
       <name name="ec_named_curve"/>
@@ -519,12 +553,58 @@
       </desc>
     </datatype>
 
+    <datatype_title>Error types</datatype_title>
+
+    <datatype>
+      <name name="run_time_error"/>
+      <desc>
+	<p>The exception <c>error:badarg</c> signifies that one or more arguments are of wrong data type,
+	or are otherwise badly formed.
+	</p>
+	<p>The exception <c>error:notsup</c> signifies that the algorithm is known but is not supported
+	by current underlying libcrypto or explicitly disabled when building that.
+	</p>
+	<p>For a list of supported algorithms, see <seealso marker="#supports-0">supports/0</seealso>.
+	</p>
+      </desc>
+    </datatype>
+
+    <datatype>
+      <name name="descriptive_error"/>
+      <desc>
+	<p>This is a more developed variant of the older
+	<seealso marker="#type-run_time_error">run_time_error()</seealso>.
+	</p>
+	<p>It is like the older type an exception of the <c>error</c> class. In addition they contain
+	a descriptive text in English. That text is targeted to a developer. Examples are "Bad key size"
+	or "Cipher id is not an atom".
+	</p>
+	<p>The exceptions are:</p>
+	<taglist>
+	  <tag><c>{badarg, Description::string()}</c></tag>
+	  <item><p>Signifies that one or more arguments are of wrong data type or are otherwise badly formed.</p>
+	  </item>
+
+	  <tag><c>{notsup, Description::string()}</c></tag>
+	  <item><p>Signifies that the algorithm is known but is not supported by current underlying libcrypto
+	  or explicitly disabled when building that one.</p>
+	  </item>
+
+	  <tag><c>{error, Description::string()}</c></tag>
+	  <item><p>An error condition that should not occur, for example a memory allocation failed or
+	  the underlying cryptolib returned an error code, for example "Can't initialize context, step 1".
+	  Thoose text usually needs searching the C-code to be understood.</p>
+	  </item>
+	</taglist>
+      </desc>
+    </datatype>
+
   </datatypes>
 
   <!--================ FUNCTIONS ================-->
   <funcs>
     <func>
-      <name name="block_encrypt" arity="3"/>
+      <name name="block_encrypt" arity="3" since="OTP 18.0"/>
       <fsummary>Encrypt <c>PlainText</c> according to <c>Type</c> block cipher</fsummary>
       <desc>
 	<p>Encrypt <c>PlainText</c> according to <c>Type</c> block cipher.</p>
@@ -537,7 +617,7 @@
     </func>
 
     <func>
-      <name name="block_decrypt" arity="3"/>
+      <name name="block_decrypt" arity="3" since="OTP 18.0"/>
       <fsummary>Decrypt <c>CipherText</c> according to <c>Type</c> block cipher</fsummary>
       <desc>
         <p>Decrypt <c>CipherText</c> according to <c>Type</c> block cipher.</p>
@@ -550,17 +630,18 @@
     </func>
 
     <func>
-      <name>block_encrypt(Type, Key, Ivec, PlainText) -> CipherText</name>
-      <name>block_encrypt(AeadType, Key, Ivec, {AAD, PlainText}) -> {CipherText, CipherTag}</name>
-      <name>block_encrypt(aes_gcm | aes_ccm, Key, Ivec, {AAD, PlainText, TagLength}) -> {CipherText, CipherTag}</name>
+      <name since="OTP R16B01">block_encrypt(Type, Key, Ivec, PlainText) -> CipherText | Error</name>
+      <name since="OTP R16B01">block_encrypt(AeadType, Key, Ivec, {AAD, PlainText}) -> {CipherText, CipherTag} | Error</name>
+      <name since="OTP R16B01">block_encrypt(aes_gcm | aes_ccm, Key, Ivec, {AAD, PlainText, TagLength}) -> {CipherText, CipherTag} | Error </name>
       <fsummary>Encrypt <c>PlainText</c> according to <c>Type</c> block cipher</fsummary>
       <type>
-	<v>Type = <seealso marker="#type-block_cipher_with_iv">block_cipher_with_iv()</seealso></v>
+	<v>Type = <seealso marker="#type-block_cipher_iv">block_cipher_iv()</seealso></v>
 	<v>AeadType = <seealso marker="#type-aead_cipher">aead_cipher()</seealso></v>
 	<v>Key = <seealso marker="#type-key">key()</seealso> | <seealso marker="#type-des3_key">des3_key()</seealso></v>
         <v>PlainText = iodata()</v>
         <v>AAD = IVec = CipherText = CipherTag = binary()</v>
         <v>TagLength = 1..16</v>
+	<v>Error = <seealso marker="#type-run_time_error">run_time_error()</seealso></v>
       </type>
       <desc>
         <p>Encrypt <c>PlainText</c> according to <c>Type</c> block cipher.
@@ -577,15 +658,17 @@
     </func>
 
     <func>
-      <name>block_decrypt(Type, Key, Ivec, CipherText) -> PlainText</name>
-      <name>block_decrypt(AeadType, Key, Ivec, {AAD, CipherText, CipherTag}) -> PlainText | error</name>
+      <name since="OTP R16B01">block_decrypt(Type, Key, Ivec, CipherText) -> PlainText | Error</name>
+      <name since="OTP R16B01">block_decrypt(AeadType, Key, Ivec, {AAD, CipherText, CipherTag}) -> PlainText | Error</name>
       <fsummary>Decrypt <c>CipherText</c> according to <c>Type</c> block cipher</fsummary>
       <type>
-	<v>Type = <seealso marker="#type-block_cipher_with_iv">block_cipher_with_iv()</seealso></v>
+	<v>Type = <seealso marker="#type-block_cipher_iv">block_cipher_iv()</seealso></v>
 	<v>AeadType = <seealso marker="#type-aead_cipher">aead_cipher()</seealso></v>
 	<v>Key = <seealso marker="#type-key">key()</seealso> | <seealso marker="#type-des3_key">des3_key()</seealso></v>
         <v>PlainText = iodata()</v>
         <v>AAD = IVec = CipherText = CipherTag = binary()</v>
+	<v>Error = BadTag | <seealso marker="#type-run_time_error">run_time_error()</seealso></v>
+	<v>BadTag = error</v>
       </type>
       <desc>
         <p>Decrypt <c>CipherText</c> according to <c>Type</c> block cipher.
@@ -603,7 +686,7 @@
     </func>
 
      <func>
-      <name name="bytes_to_integer" arity="1"/>
+      <name name="bytes_to_integer" arity="1" since="OTP R16B01"/>
       <fsummary>Convert binary representation, of an integer, to an Erlang integer.</fsummary>
       <desc>
         <p>Convert binary representation, of an integer, to an Erlang integer.
@@ -612,7 +695,7 @@
     </func>
 
     <func>
-      <name name="compute_key" arity="4"/>
+      <name name="compute_key" arity="4" since="OTP R16B01"/>
       <fsummary>Computes the shared secret</fsummary>
       <desc>
 	<p>Computes the shared secret from the private key and the other party's public key.
@@ -622,7 +705,7 @@
     </func>
 
     <func>
-      <name name="exor" arity="2"/>
+      <name name="exor" arity="2" since=""/>
       <fsummary>XOR data</fsummary>
       <desc>
 	<p>Performs bit-wise XOR (exclusive or) on the data supplied.</p>
@@ -631,8 +714,8 @@
 
 
     <func>
-      <name name="generate_key" arity="2"/>
-      <name name="generate_key" arity="3"/>
+      <name name="generate_key" arity="2" since="OTP R16B01"/>
+      <name name="generate_key" arity="3" since="OTP R16B01"/>
       <fsummary>Generates a public key of type <c>Type</c></fsummary>
       <desc>
 	<p>Generates a public key of type <c>Type</c>.
@@ -653,7 +736,7 @@
     </func>
 
      <func>
-      <name name="hash" arity="2"/>
+      <name name="hash" arity="2" since="OTP R15B02"/>
       <fsummary></fsummary>
       <desc>
         <p>Computes a message digest of type <c>Type</c> from <c>Data</c>.</p>
@@ -663,7 +746,7 @@
     </func>
 
     <func>
-      <name name="hash_init" arity="1"/>
+      <name name="hash_init" arity="1" since="OTP R15B02"/>
       <fsummary></fsummary>
       <desc>
         <p>Initializes the context for streaming hash operations. <c>Type</c> determines
@@ -675,7 +758,7 @@
     </func>
 
     <func>
-      <name name="hash_update" arity="2"/>
+      <name name="hash_update" arity="2" since="OTP R15B02"/>
       <fsummary></fsummary>
       <desc>
         <p>Updates the digest represented by <c>Context</c> using the given <c>Data</c>. <c>Context</c>
@@ -687,7 +770,7 @@
     </func>
 
     <func>
-      <name name="hash_final" arity="1"/>
+      <name name="hash_final" arity="1" since="OTP R15B02"/>
       <fsummary></fsummary>
       <desc>
         <p>Finalizes the hash operation referenced by <c>Context</c> returned
@@ -698,8 +781,8 @@
     </func>
 
     <func>
-      <name name="hmac" arity="3"/>
-      <name name="hmac" arity="4"/>
+      <name name="hmac" arity="3" since="OTP R16B"/>
+      <name name="hmac" arity="4" since="OTP R16B"/>
       <fsummary></fsummary>
       <desc>
         <p>Computes a HMAC of type <c>Type</c> from <c>Data</c> using
@@ -709,7 +792,7 @@
     </func>
 
     <func>
-      <name name="hmac_init" arity="2"/>
+      <name name="hmac_init" arity="2" since="OTP R14B03"/>
       <fsummary></fsummary>
       <desc>
         <p>Initializes the context for streaming HMAC operations. <c>Type</c> determines
@@ -719,7 +802,7 @@
     </func>
 
     <func>
-      <name name="hmac_update" arity="2"/>
+      <name name="hmac_update" arity="2" since="OTP R14B03"/>
       <fsummary></fsummary>
       <desc>
         <p>Updates the HMAC represented by <c>Context</c> using the given <c>Data</c>. <c>Context</c>
@@ -738,7 +821,7 @@
     </func>
 
     <func>
-      <name name="hmac_final" arity="1"/>
+      <name name="hmac_final" arity="1" since="OTP R14B03"/>
       <fsummary></fsummary>
       <desc>
         <p>Finalizes the HMAC operation referenced by <c>Context</c>. The size of the resultant MAC is
@@ -747,7 +830,7 @@
     </func>
 
     <func>
-      <name name="hmac_final_n" arity="2"/>
+      <name name="hmac_final_n" arity="2" since="OTP R14B03"/>
       <fsummary></fsummary>
       <desc>
         <p>Finalizes the HMAC operation referenced by <c>Context</c>. <c>HashLen</c> must be greater than
@@ -756,8 +839,8 @@
     </func>
 
     <func>
-      <name name="cmac" arity="3"/>
-      <name name="cmac" arity="4"/>
+      <name name="cmac" arity="3" since="OTP 20.0"/>
+      <name name="cmac" arity="4" since="OTP 20.0"/>
       <fsummary>Calculates the Cipher-based Message Authentication Code.</fsummary>
       <desc>
         <p>Computes a CMAC of type <c>Type</c> from <c>Data</c> using
@@ -767,7 +850,7 @@
     </func>
 
     <func>
-      <name name="info_fips" arity="0"/>
+      <name name="info_fips" arity="0" since="OTP 20.0"/>
       <fsummary>Provides information about the FIPS operating status.</fsummary>
       <desc>
         <p>Provides information about the FIPS operating status of
@@ -790,7 +873,7 @@
     </func>
 
     <func>
-      <name name="enable_fips_mode" arity="1"/>
+      <name name="enable_fips_mode" arity="1" since="OTP 21.1"/>
       <fsummary>Change FIPS mode.</fsummary>
       <desc>
         <p>Enables (<c>Enable = true</c>) or disables (<c>Enable = false</c>) FIPS mode. Returns <c>true</c> if
@@ -805,7 +888,7 @@
     </func>
 
     <func>
-      <name name="info_lib" arity="0"/>
+      <name name="info_lib" arity="0" since=""/>
       <fsummary>Provides information about the libraries used by crypto.</fsummary>
       <desc>
         <p>Provides the name and version of the libraries used by crypto.</p>
@@ -826,7 +909,40 @@
     </func>
 
     <func>
-      <name name="mod_pow" arity="3"/>
+      <name name="hash_info" arity="1" since="OTP 22.0"/>
+      <fsummary>Information about supported hash algorithms.</fsummary>
+      <desc>
+	<p>Provides a map with information about block_size, size and possibly other properties of the
+	hash algorithm in question.
+	</p>
+	<p>For a list of supported hash algorithms, see <seealso marker="#supports-0">supports/0</seealso>.
+	</p>
+      </desc>
+    </func>
+
+    <func>
+      <name name="cipher_info" arity="1" since="OTP 22.0"/>
+      <fsummary>Information about supported ciphers.</fsummary>
+      <desc>
+	<p>Provides a map with information about block_size, key_length, iv_length and possibly other properties of the
+	cipher algorithm in question.
+	</p>
+        <note>
+	  <p>The ciphers <c>aes_cbc</c>, <c>aes_cfb8</c>, <c>aes_cfb128</c>, <c>aes_ctr</c>, 
+	  <c>aes_ecb</c>, <c>aes_gcm</c> and <c>aes_ccm</c>
+	  has no keylength in the <c>Type</c> as opposed to for example <c>aes_128_ctr</c>. They adapt to the length of
+	  the key provided in the encrypt and decrypt function. Therefor it is impossible to return a valid keylength
+	  in the map.</p>
+	  <p>Always use a <c>Type</c> with an explicit key length,
+	  </p>
+	</note>
+	<p>For a list of supported cipher algorithms, see <seealso marker="#supports-0">supports/0</seealso>.
+	</p>
+      </desc>
+    </func>
+
+    <func>
+      <name name="mod_pow" arity="3" since="OTP R16B01"/>
       <fsummary>Computes the function: N^P mod M</fsummary>
       <desc>
 	<p>Computes the function <c>N^P mod M</c>.</p>
@@ -834,8 +950,8 @@
     </func>
 
     <func>
-      <name name="next_iv" arity="2"/>
-      <name name="next_iv" arity="3"/>
+      <name name="next_iv" arity="2" since="OTP R16B01"/>
+      <name name="next_iv" arity="3" since="OTP R16B01"/>
       <fsummary></fsummary>
       <desc>
 	<p>Returns the initialization vector to be used in the next
@@ -847,7 +963,7 @@
     </func>
 
     <func>
-      <name name="poly1305" arity="2"/>
+      <name name="poly1305" arity="2" since="OTP 21.1"/>
       <fsummary></fsummary>
       <desc>
         <p>Computes a POLY1305 message authentication code (<c>Mac</c>) from <c>Data</c> using
@@ -856,7 +972,7 @@
     </func>
 
     <func>
-      <name name="private_decrypt" arity="4"/>
+      <name name="private_decrypt" arity="4" since="OTP R16B01"/>
       <fsummary>Decrypts CipherText using the private Key.</fsummary>
       <desc>
 	<p>Decrypts the <c>CipherText</c>, encrypted with
@@ -870,7 +986,7 @@
     </func>
 
     <func>
-      <name name="private_encrypt" arity="4"/>
+      <name name="private_encrypt" arity="4" since="OTP R16B01"/>
       <fsummary>Encrypts PlainText using the private Key.</fsummary>
       <desc>
 	<p>Encrypts the <c>PlainText</c> using the <c>PrivateKey</c>
@@ -883,7 +999,7 @@
     </func>
 
     <func>
-      <name name="public_decrypt" arity="4"/>
+      <name name="public_decrypt" arity="4" since="OTP R16B01"/>
       <fsummary>Decrypts CipherText using the public Key.</fsummary>
       <desc>
 	<p>Decrypts the <c>CipherText</c>, encrypted with
@@ -897,7 +1013,7 @@
     </func>
 
     <func>
-      <name name="public_encrypt" arity="4"/>
+      <name name="public_encrypt" arity="4" since="OTP R16B01"/>
       <fsummary>Encrypts PlainText using the public Key.</fsummary>
       <desc>
 	<p>Encrypts the <c>PlainText</c> (message digest) using the <c>PublicKey</c>
@@ -909,7 +1025,7 @@
     </func>
 
     <func>
-      <name name="rand_seed" arity="1"/>
+      <name name="rand_seed" arity="1" since="OTP 17.0"/>
       <fsummary>Set the seed for random bytes generation</fsummary>
       <desc>
         <p>Set the seed for PRNG to the given binary. This calls the
@@ -922,7 +1038,7 @@
     </func>
 
      <func>
-      <name>rand_uniform(Lo, Hi) -> N</name>
+      <name since="">rand_uniform(Lo, Hi) -> N</name>
       <fsummary>Generate a random number</fsummary>
       <type>
         <v>Lo, Hi, N = integer()</v>
@@ -935,7 +1051,7 @@
     </func>
 
     <func>
-      <name name="start" arity="0"/>
+      <name name="start" arity="0" since=""/>
       <fsummary> Equivalent to application:start(crypto). </fsummary>
       <desc>
         <p> Equivalent to application:start(crypto).</p>
@@ -943,7 +1059,7 @@
     </func>
 
     <func>
-      <name name="stop" arity="0"/>
+      <name name="stop" arity="0" since=""/>
       <fsummary> Equivalent to application:stop(crypto).</fsummary>
       <desc>
         <p> Equivalent to application:stop(crypto).</p>
@@ -951,7 +1067,7 @@
     </func>
 
     <func>
-      <name name="strong_rand_bytes" arity="1"/>
+      <name name="strong_rand_bytes" arity="1" since="OTP R14B03"/>
       <fsummary>Generate a binary of random bytes</fsummary>
       <desc>
         <p>Generates N bytes randomly uniform 0..255, and returns the
@@ -964,7 +1080,7 @@
     </func>
 
     <func>
-      <name name="rand_seed" arity="0"/>
+      <name name="rand_seed" arity="0" since="OTP 20.0"/>
       <fsummary>Strong random number generation plugin state</fsummary>
       <desc>
 	<p>
@@ -992,7 +1108,7 @@ _FloatValue = rand:uniform().     % [0.0; 1.0[</pre>
     </func>
 
     <func>
-      <name name="rand_seed_s" arity="0"/>
+      <name name="rand_seed_s" arity="0" since="OTP 20.0"/>
       <fsummary>Strong random number generation plugin state</fsummary>
       <desc>
 	<p>
@@ -1011,7 +1127,7 @@ _FloatValue = rand:uniform().     % [0.0; 1.0[</pre>
 	</p>
 	<note>
 	  <p>
-	    The state returned from this function can not be used
+	    The state returned from this function cannot be used
 	    to get a reproducable random sequence as from
 	    the other 
 	    <seealso marker="stdlib:rand">rand</seealso>
@@ -1027,7 +1143,7 @@ _FloatValue = rand:uniform().     % [0.0; 1.0[</pre>
     </func>
 
     <func>
-      <name>rand_seed_alg(Alg) -> rand:state()</name>
+      <name since="OTP 21.0">rand_seed_alg(Alg) -> rand:state()</name>
       <fsummary>Strong random number generation plugin state</fsummary>
       <type>
         <v>Alg = crypto | crypto_cache</v>
@@ -1037,7 +1153,8 @@ _FloatValue = rand:uniform().     % [0.0; 1.0[</pre>
 	<p>
           Creates state object for
 	  <seealso marker="stdlib:rand">random number generation</seealso>,
-          in order to generate cryptographically strong random numbers.
+          in order to generate cryptographically strong random numbers,
+          and saves it in the process dictionary before returning it as well.
           See also
 	  <seealso marker="stdlib:rand#seed-1">rand:seed/1</seealso> and
 	  <seealso marker="#rand_seed_alg_s-1">rand_seed_alg_s/1</seealso>.
@@ -1048,12 +1165,6 @@ _FloatValue = rand:uniform().     % [0.0; 1.0[</pre>
 	  may raise exception <c>error:low_entropy</c> in case the random generator
 	  failed due to lack of secure "randomness".
 	</p>
-	<p>
-	  The cache size can be changed from its default value using the
-	  <seealso marker="crypto_app">
-	    crypto app's
-	  </seealso> configuration parameter <c>rand_cache_size</c>.
-	</p>
         <p><em>Example</em></p>
         <pre>
 _ = crypto:rand_seed_alg(crypto_cache),
@@ -1063,7 +1174,35 @@ _FloatValue = rand:uniform().     % [0.0; 1.0[</pre>
     </func>
 
     <func>
-      <name>rand_seed_alg_s(Alg) -> rand:state()</name>
+      <name since="OTP-22.0">rand_seed_alg(Alg, Seed) -> rand:state()</name>
+      <fsummary>Strong random number generation plugin state</fsummary>
+      <type>
+        <v>Alg = crypto_aes</v>
+      </type>
+      <desc>
+	<marker id="rand_seed_alg-2" />
+	<p>
+          Creates a state object for
+	  <seealso marker="stdlib:rand">random number generation</seealso>,
+          in order to generate cryptographically unpredictable random numbers,
+          and saves it in the process dictionary before returning it as well.
+          See also
+	  <seealso marker="#rand_seed_alg_s-2">rand_seed_alg_s/2</seealso>.
+	</p>
+        <p><em>Example</em></p>
+        <pre>
+_ = crypto:rand_seed_alg(crypto_aes, "my seed"),
+IntegerValue = rand:uniform(42), % [1; 42]
+FloatValue = rand:uniform(),     % [0.0; 1.0[
+_ = crypto:rand_seed_alg(crypto_aes, "my seed"),
+IntegerValue = rand:uniform(42), % Same values
+FloatValue = rand:uniform().     % again
+	</pre>
+      </desc>
+    </func>
+
+    <func>
+      <name since="OTP 21.0">rand_seed_alg_s(Alg) -> rand:state()</name>
       <fsummary>Strong random number generation plugin state</fsummary>
       <type>
         <v>Alg = crypto | crypto_cache</v>
@@ -1099,9 +1238,15 @@ _FloatValue = rand:uniform().     % [0.0; 1.0[</pre>
 	    crypto app's
 	  </seealso> configuration parameter <c>rand_cache_size</c>.
 	</p>
+	<p>
+	  When using the state object from this function the
+	  <seealso marker="stdlib:rand">rand</seealso> functions using it
+	  may throw exception <c>low_entropy</c> in case the random generator
+	  failed due to lack of secure "randomness".
+	</p>
 	<note>
 	  <p>
-	    The state returned from this function can not be used
+	    The state returned from this function cannot be used
 	    to get a reproducable random sequence as from
 	    the other 
 	    <seealso marker="stdlib:rand">rand</seealso>
@@ -1121,7 +1266,73 @@ _FloatValue = rand:uniform().     % [0.0; 1.0[</pre>
     </func>
 
     <func>
-      <name name="stream_init" arity="2"/>
+      <name since="OTP 22.0">rand_seed_alg_s(Alg, Seed) -> rand:state()</name>
+      <fsummary>Strong random number generation plugin state</fsummary>
+      <type>
+        <v>Alg = crypto_aes</v>
+      </type>
+      <desc>
+	<marker id="rand_seed_alg_s-2" />
+	<p>
+          Creates a state object for
+	  <seealso marker="stdlib:rand">random number generation</seealso>,
+          in order to generate cryptographically unpredictable random numbers.
+          See also
+	  <seealso marker="#rand_seed_alg-1">rand_seed_alg/1</seealso>.
+	</p>
+	<p>
+	  To get a long period the Xoroshiro928 generator from the
+	  <seealso marker="stdlib:rand">rand</seealso>
+	  module is used as a counter (with period 2^928 - 1)
+	  and the generator states are scrambled through AES
+	  to create 58-bit pseudo random values.
+	</p>
+	<p>
+	  The result should be statistically completely unpredictable
+	  random values, since the scrambling is cryptographically strong
+	  and the period is ridiculously long.  But the generated numbers
+	  are not to be regarded as cryptographically strong since
+	  there is no re-keying schedule.
+	</p>
+	<list type="bulleted">
+	  <item>
+	    <p>
+	      If you need cryptographically strong random numbers use
+	      <seealso marker="#rand_seed_alg_s-1">rand_seed_alg_s/1</seealso>
+	      with <c>Alg =:= crypto</c> or <c>Alg =:= crypto_cache</c>.
+	    </p>
+	  </item>
+	  <item>
+	    <p>
+	      If you need to be able to repeat the sequence use this function.
+	    </p>
+	  </item>
+	  <item>
+	    <p>
+	      If you do not need the statistical quality of this function,
+	      there are faster algorithms in the
+	      <seealso marker="stdlib:rand">rand</seealso>
+	      module.
+	    </p>
+	  </item>
+	</list>
+	<p>
+	  Thanks to the used generator the state object supports the
+	  <seealso marker="stdlib:rand#jump-0"><c>rand:jump/0,1</c></seealso>
+	  function with distance 2^512.
+	</p>
+	<p>
+	  Numbers are generated in batches and cached for speed reasons.
+	  The cache size can be changed from its default value using the
+	  <seealso marker="crypto_app">
+	    crypto app's
+	  </seealso> configuration parameter <c>rand_cache_size</c>.
+	</p>
+      </desc>
+    </func>
+
+    <func>
+      <name name="stream_init" arity="2" since="OTP R16B01"/>
       <fsummary></fsummary>
       <desc>
         <p>Initializes the state for use in RC4 stream encryption
@@ -1134,7 +1345,7 @@ _FloatValue = rand:uniform().     % [0.0; 1.0[</pre>
     </func>
 
    <func>
-      <name name="stream_init" arity="3"/>
+      <name name="stream_init" arity="3" since="OTP R16B01"/>
       <fsummary></fsummary>
       <desc>
         <p>Initializes the state for use in streaming AES encryption using Counter mode (CTR).
@@ -1149,7 +1360,7 @@ _FloatValue = rand:uniform().     % [0.0; 1.0[</pre>
     </func>
 
     <func>
-      <name name="stream_encrypt" arity="2"/>
+      <name name="stream_encrypt" arity="2" since="OTP R16B01"/>
       <fsummary></fsummary>
       <desc>
 	<p>Encrypts <c>PlainText</c> according to the stream cipher <c>Type</c> specified in stream_init/3.
@@ -1160,7 +1371,7 @@ _FloatValue = rand:uniform().     % [0.0; 1.0[</pre>
     </func>
 
     <func>
-      <name name="stream_decrypt" arity="2"/>
+      <name name="stream_decrypt" arity="2" since="OTP R16B01"/>
       <fsummary></fsummary>
       <desc>
 	<p>Decrypts <c>CipherText</c> according to the stream cipher <c>Type</c> specified in stream_init/3.
@@ -1171,19 +1382,19 @@ _FloatValue = rand:uniform().     % [0.0; 1.0[</pre>
     </func>
 
    <func>
-      <name name="supports" arity="0"/>
+      <name name="supports" arity="0" since="OTP R16B01"/>
       <fsummary>Provide a list of available crypto algorithms.</fsummary>
       <desc>
         <p> Can be used to determine which crypto algorithms that are supported
 	by the underlying libcrypto library</p>
-	<p>Note: the <c>rsa_opts</c> entry is in an experimental state and may change or be removed without notice.
-	No guarantee for the accuarcy of the rsa option's value list should be assumed.
+	<p>See <seealso marker="#hash_info-1">hash_info/1</seealso> and <seealso marker="#cipher_info-1">cipher_info/1</seealso>
+	for information about the hash and cipher algorithms.
 	</p>
       </desc>
     </func>
 
     <func>
-      <name name="ec_curves" arity="0"/>
+      <name name="ec_curves" arity="0" since="OTP 17.0"/>
       <fsummary>Provide a list of available named elliptic curves.</fsummary>
       <desc>
         <p>Can be used to determine which named elliptic curves are supported.</p>
@@ -1191,7 +1402,7 @@ _FloatValue = rand:uniform().     % [0.0; 1.0[</pre>
     </func>
 
     <func>
-      <name name="ec_curve" arity="1"/>
+      <name name="ec_curve" arity="1" since="OTP 17.0"/>
       <fsummary>Get the defining parameters of a elliptic curve.</fsummary>
       <desc>
         <p>Return the defining parameters of a elliptic curve.</p>
@@ -1199,8 +1410,8 @@ _FloatValue = rand:uniform().     % [0.0; 1.0[</pre>
     </func>
 
     <func>
-      <name name="sign" arity="4"/>
-      <name name="sign" arity="5"/>
+      <name name="sign" arity="4" since="OTP R16B01"/>
+      <name name="sign" arity="5" since="OTP 20.1"/>
       <fsummary> Create digital signature.</fsummary>
       <desc>
 	<p>Creates a digital signature.</p>
@@ -1214,8 +1425,8 @@ _FloatValue = rand:uniform().     % [0.0; 1.0[</pre>
     </func>
 
     <func>
-      <name name="verify" arity="5"/>
-      <name name="verify" arity="6"/>
+      <name name="verify" arity="5" since="OTP R16B01"/>
+      <name name="verify" arity="6" since="OTP 20.1"/>
       <fsummary>Verifies a digital signature.</fsummary>
       <desc>
 	<p>Verifies a digital signature</p>
@@ -1231,7 +1442,7 @@ _FloatValue = rand:uniform().     % [0.0; 1.0[</pre>
 
     <!-- Engine functions -->
     <func>
-      <name name="privkey_to_pubkey" arity="2"/>
+      <name name="privkey_to_pubkey" arity="2" since="OTP 20.2"/>
       <fsummary>Fetches a public key from an Engine stored private key.</fsummary>
       <desc>
 	<p>Fetches the corresponding public key from a private key stored in an Engine.
@@ -1241,7 +1452,7 @@ _FloatValue = rand:uniform().     % [0.0; 1.0[</pre>
     </func>
 
     <func>
-      <name name="engine_get_all_methods" arity="0"/>
+      <name name="engine_get_all_methods" arity="0" since="OTP 20.2"/>
       <fsummary>Return list of all possible engine methods</fsummary>
       <desc>
 	<p>
@@ -1259,7 +1470,7 @@ _FloatValue = rand:uniform().     % [0.0; 1.0[</pre>
     </func>
 
     <func>
-      <name name="engine_load" arity="3"/>
+      <name name="engine_load" arity="3" since="OTP 20.2"/>
       <fsummary>Dynamical load an encryption engine</fsummary>
       <desc>
 	<p>
@@ -1281,7 +1492,7 @@ _FloatValue = rand:uniform().     % [0.0; 1.0[</pre>
     </func>
 
     <func>
-      <name name="engine_load" arity="4"/>
+      <name name="engine_load" arity="4" since="OTP 20.2"/>
       <fsummary>Dynamical load an encryption engine</fsummary>
       <desc>
 	<p>
@@ -1301,7 +1512,7 @@ _FloatValue = rand:uniform().     % [0.0; 1.0[</pre>
     </func>
 
     <func>
-      <name name="engine_unload" arity="1"/>
+      <name name="engine_unload" arity="1" since="OTP 20.2"/>
       <fsummary>Dynamical load an encryption engine</fsummary>
       <desc>
 	<p>
@@ -1321,7 +1532,7 @@ _FloatValue = rand:uniform().     % [0.0; 1.0[</pre>
     </func>
 
     <func>
-      <name name="engine_by_id" arity="1"/>
+      <name name="engine_by_id" arity="1" since="OTP 21.0.6"/>
       <fsummary>Get a reference to an already loaded engine</fsummary>
       <desc>
 	<p>
@@ -1341,7 +1552,7 @@ _FloatValue = rand:uniform().     % [0.0; 1.0[</pre>
     </func>
 
     <func>
-      <name name="engine_ctrl_cmd_string" arity="3"/>
+      <name name="engine_ctrl_cmd_string" arity="3" since="OTP 20.2"/>
       <fsummary>Sends ctrl commands to an OpenSSL engine</fsummary>
       <desc>
 	<p>
@@ -1358,7 +1569,7 @@ _FloatValue = rand:uniform().     % [0.0; 1.0[</pre>
     </func>
 
     <func>
-      <name name="engine_ctrl_cmd_string" arity="4"/>
+      <name name="engine_ctrl_cmd_string" arity="4" since="OTP 20.2"/>
       <fsummary>Sends ctrl commands to an OpenSSL engine</fsummary>
       <desc>
 	<p>
@@ -1379,7 +1590,7 @@ _FloatValue = rand:uniform().     % [0.0; 1.0[</pre>
     </func>
 
     <func>
-      <name name="engine_add" arity="1"/>
+      <name name="engine_add" arity="1" since="OTP 21.0.6"/>
       <fsummary>Add engine to OpenSSL internal list</fsummary>
       <desc>
 	<p>Add the engine to OpenSSL's internal list.</p>
@@ -1392,7 +1603,7 @@ _FloatValue = rand:uniform().     % [0.0; 1.0[</pre>
     </func>
 
     <func>
-      <name name="engine_remove" arity="1"/>
+      <name name="engine_remove" arity="1" since="OTP 21.0.6"/>
       <fsummary>Remove engine to OpenSSL internal list</fsummary>
       <desc>
 	<p>Remove the engine from OpenSSL's internal list.</p>
@@ -1405,7 +1616,7 @@ _FloatValue = rand:uniform().     % [0.0; 1.0[</pre>
     </func>
 
     <func>
-      <name name="engine_get_id" arity="1"/>
+      <name name="engine_get_id" arity="1" since="OTP 21.0.6"/>
       <fsummary>Fetch engine ID</fsummary>
       <desc>
 	<p>Return the ID for the engine, or an empty binary if there is no id set.</p>
@@ -1418,7 +1629,7 @@ _FloatValue = rand:uniform().     % [0.0; 1.0[</pre>
     </func>
 
     <func>
-      <name name="engine_get_name" arity="1"/>
+      <name name="engine_get_name" arity="1" since="OTP 21.0.6"/>
       <fsummary>Fetch engine name</fsummary>
       <desc>
 	<p>Return the name (eg a description) for the engine, or an empty binary if there is no name set.</p>
@@ -1431,7 +1642,7 @@ _FloatValue = rand:uniform().     % [0.0; 1.0[</pre>
     </func>
 
     <func>
-      <name name="engine_list" arity="0"/>
+      <name name="engine_list" arity="0" since="OTP 20.2"/>
       <fsummary>List the known engine ids</fsummary>
       <desc>
 	<p>List the id's of all engines in OpenSSL's internal list.</p>
@@ -1451,7 +1662,7 @@ _FloatValue = rand:uniform().     % [0.0; 1.0[</pre>
     </func>
 
     <func>
-      <name name="ensure_engine_loaded" arity="2"/>
+      <name name="ensure_engine_loaded" arity="2" since="OTP 21.0.6"/>
       <fsummary>Ensure encryption engine just loaded once</fsummary>
       <desc>
 	<p>
@@ -1473,7 +1684,7 @@ _FloatValue = rand:uniform().     % [0.0; 1.0[</pre>
     </func>
 
     <func>
-      <name name="ensure_engine_loaded" arity="3"/>
+      <name name="ensure_engine_loaded" arity="3" since="OTP 21.0.6"/>
       <fsummary>Ensure encryption engine just loaded once</fsummary>
       <desc>
 	<p>
@@ -1496,7 +1707,7 @@ _FloatValue = rand:uniform().     % [0.0; 1.0[</pre>
     </func>
 
     <func>
-      <name name="ensure_engine_unloaded" arity="1"/>
+      <name name="ensure_engine_unloaded" arity="1" since="OTP 21.0.6"/>
       <fsummary>Unload an engine loaded with the ensure function</fsummary>
       <desc>
 	<p>
@@ -1519,7 +1730,7 @@ _FloatValue = rand:uniform().     % [0.0; 1.0[</pre>
     </func>
 
     <func>
-      <name name="ensure_engine_unloaded" arity="2"/>
+      <name name="ensure_engine_unloaded" arity="2" since="OTP 21.0.6"/>
       <fsummary>Unload an engine loaded with the ensure function</fsummary>
       <desc>
 	<p>
diff --git a/lib/crypto/doc/src/engine_keys.xml b/lib/crypto/doc/src/engine_keys.xml
index feeb353d1e..f78bb81bba 100644
--- a/lib/crypto/doc/src/engine_keys.xml
+++ b/lib/crypto/doc/src/engine_keys.xml
@@ -40,7 +40,7 @@
     </p>
     <p>
       An engine could among other tasks provide a storage for
-      private or public keys. Such a storage could be made safer than the normal file system. Thoose techniques are not 
+      private or public keys. Such a storage could be made safer than the normal file system. Those techniques are not
       described in this User's Guide.  Here we concentrate on how to use private or public keys stored in
       such an engine.
     </p>
@@ -51,7 +51,7 @@
     <p>
       OTP/Crypto requires that the user provides two or three items of information about the key. The application used
       by the user is usually on a higher level, for example in
-      <seealso marker="ssl:ssl#key_option_def">SSL</seealso>. If using
+      <seealso marker="ssl:ssl#type-key">SSL</seealso>. If using
       the crypto application directly, it is required that:
     </p>
     <list>
diff --git a/lib/crypto/doc/src/notes.xml b/lib/crypto/doc/src/notes.xml
index 0a3f68ade2..c0b302734e 100644
--- a/lib/crypto/doc/src/notes.xml
+++ b/lib/crypto/doc/src/notes.xml
@@ -31,6 +31,38 @@
   </header>
   <p>This document describes the changes made to the Crypto application.</p>
 
+<section><title>Crypto 4.4.1</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Fixes a bug that caused <c>crypto:sign</c> and
+	    <c>crypto:verify</c> to return the error message
+	    <c>badarg</c> instead of <c>notsup</c> in one case. That
+	    case was when signing or verifying with eddsa keys (that
+	    is, ed15519 or ed448), but only when FIPS was supported
+	    and enabled.</p>
+          <p>
+	    Own Id: OTP-15634</p>
+        </item>
+      </list>
+    </section>
+
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+          <p>
+	    Added a crypto benchmark test suite.</p>
+          <p>
+	    Own Id: OTP-15447</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Crypto 4.4</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
diff --git a/lib/crypto/src/crypto.erl b/lib/crypto/src/crypto.erl
index 72cb9aabfd..04b2f62266 100644
--- a/lib/crypto/src/crypto.erl
+++ b/lib/crypto/src/crypto.erl
@@ -24,6 +24,7 @@
 
 -export([start/0, stop/0, info_lib/0, info_fips/0, supports/0, enable_fips_mode/1,
          version/0, bytes_to_integer/1]).
+-export([cipher_info/1, hash_info/1]).
 -export([hash/2, hash_init/1, hash_update/2, hash_final/1]).
 -export([sign/4, sign/5, verify/5, verify/6]).
 -export([generate_key/2, generate_key/3, compute_key/4]).
@@ -31,21 +32,39 @@
 -export([cmac/3, cmac/4]).
 -export([poly1305/2]).
 -export([exor/2, strong_rand_bytes/1, mod_pow/3]).
--export([rand_seed/0, rand_seed_alg/1]).
--export([rand_seed_s/0, rand_seed_alg_s/1]).
+-export([rand_seed/0, rand_seed_alg/1, rand_seed_alg/2]).
+-export([rand_seed_s/0, rand_seed_alg_s/1, rand_seed_alg_s/2]).
 -export([rand_plugin_next/1]).
+-export([rand_plugin_aes_next/1, rand_plugin_aes_jump/1]).
 -export([rand_plugin_uniform/1]).
 -export([rand_plugin_uniform/2]).
 -export([rand_cache_plugin_next/1]).
 -export([rand_uniform/2]).
--export([block_encrypt/3, block_decrypt/3, block_encrypt/4, block_decrypt/4]).
 -export([next_iv/2, next_iv/3]).
--export([stream_init/2, stream_init/3, stream_encrypt/2, stream_decrypt/2]).
 -export([public_encrypt/4, private_decrypt/4]).
 -export([private_encrypt/4, public_decrypt/4]).
 -export([privkey_to_pubkey/2]).
 -export([ec_curve/1, ec_curves/0]).
 -export([rand_seed/1]).
+
+%% Old interface. Now implemented with the New interface
+-export([stream_init/2, stream_init/3,
+         stream_encrypt/2,
+         stream_decrypt/2,
+         block_encrypt/3, block_encrypt/4,
+         block_decrypt/3, block_decrypt/4
+        ]).
+
+%% New interface
+-export([crypto_init/4, crypto_init/3,
+         crypto_update/2,
+         crypto_one_time/4, crypto_one_time/5,
+         crypto_aead/6, crypto_aead/7,
+         crypto_init_dyn_iv/3,
+         crypto_update_dyn_iv/3
+        ]).
+
+
 %% Engine
 -export([
          engine_get_all_methods/0,
@@ -88,11 +107,14 @@
 -export_type([
               stream_state/0,
               hmac_state/0,
-              hash_state/0
+              hash_state/0,
+              crypto_state/0
              ]).
    
 %% Private. For tests.
--export([packed_openssl_version/4, engine_methods_convert_to_bitmask/2, get_test_engine/0]).
+-export([packed_openssl_version/4, engine_methods_convert_to_bitmask/2,
+	 get_test_engine/0]).
+-export([rand_plugin_aes_jump_2pow20/1]).
 
 -deprecated({rand_uniform, 2, next_major_release}).
 
@@ -255,23 +277,153 @@
 
 -type edwards_curve_ed() :: ed25519 | ed448 .
 
-%%% 
+%%%----------------------------------------------------------------
+%%% New cipher schema
+%%%
+-type cipher() :: cipher_no_iv()
+                | cipher_iv() 
+                | cipher_aead() .
+
+-type cipher_no_iv() :: aes_128_ecb
+                      | aes_192_ecb
+                      | aes_256_ecb
+
+                      | blowfish_ecb
+                      | des_ecb
+                      | rc4 .
+
+-type cipher_iv() :: aes_128_cbc
+                   | aes_192_cbc
+                   | aes_256_cbc
+
+                   | aes_128_cfb128
+                   | aes_192_cfb128
+                   | aes_256_cfb128
+
+                   | aes_128_cfb8
+                   | aes_192_cfb8
+                   | aes_256_cfb8
+
+                   | aes_128_ctr
+                   | aes_192_ctr
+                   | aes_256_ctr
+
+                   | aes_ige256
+
+                   | blowfish_cbc
+                   | blowfish_cfb64
+                   | blowfish_ofb64
+                   | chacha20
+                   | des_ede3_cbc
+                   | des_ede3_cfb
+
+                   | des_cbc
+                   | des_cfb
+                   | rc2_cbc .
+
+
+-type cipher_aead() :: aes_128_ccm
+                     | aes_192_ccm
+                     | aes_256_ccm
+                       
+                     | aes_128_gcm
+                     | aes_192_gcm
+                     | aes_256_gcm
+
+                     | chacha20_poly1305 .
+
+
+%% -type retired_cipher_no_iv_aliases() :: aes_ecb .
+
+%% -type retired_cipher_iv_aliases() :: aes_cbc
+%%                                    | aes_cbc128  % aes_128_cbc
+%%                                    | aes_cbc256  % aes_256_cbc
+%%                                    | aes_cfb128
+%%                                    | aes_cfb8
+%%                                    | aes_ctr
+%%                                    | des3_cbc     % des_ede3_cbc
+%%                                    | des_ede3     % des_ede3_cbc
+%%                                    | des_ede3_cbf % des_ede3_cfb
+%%                                    | des3_cbf     % des_ede3_cfb
+%%                                    | des3_cfb .   % des_ede3_cfb 
+
+%% -type retired_cipher_aead_aliases() :: aes_ccm
+%%                                      | aes_gcm .
+
+%%%----------------------------------------------------------------
+%%% Old cipher scheme
+%%%
+%%%
+-type block_cipher_without_iv() :: ecb_cipher() .
+
 -type block_cipher_with_iv() :: cbc_cipher()
                               | cfb_cipher()
-                              | aes_cbc128
-                              | aes_cbc256
-                              | aes_ige256
                               | blowfish_ofb64
-                              | des3_cbf % cfb misspelled
-                              | des_ede3
-                              | rc2_cbc .
-
--type cbc_cipher()  :: des_cbc | des3_cbc | aes_cbc | blowfish_cbc .
+                              | aes_ige256 .
+
+-type stream_cipher() :: ctr_cipher()
+                       | chacha20
+                       | rc4 .
+                         
+
+%%%----
+-type cbc_cipher()  :: aes_128_cbc
+                     | aes_192_cbc
+                     | aes_256_cbc
+                     | blowfish_cbc
+                     | des_cbc
+                     | des_ede3_cbc
+                     | rc2_cbc 
+                     | retired_cbc_cipher_aliases() .
+
+-type retired_cbc_cipher_aliases() :: aes_cbc      % aes_*_cbc
+                                    | aes_cbc128   % aes_128_cbc
+                                    | aes_cbc256   % aes_256_cbc
+                                    | des3_cbc     % des_ede3_cbc
+                                    | des_ede3 .   % des_ede3_cbc
+                                    
+%%%----
+-type cfb_cipher() :: aes_128_cfb128
+                    | aes_192_cfb128
+                    | aes_256_cfb128
+                    | aes_128_cfb8
+                    | aes_192_cfb8
+                    | aes_256_cfb8
+                    | blowfish_cfb64
+                    | des_cfb
+                    | des_ede3_cfb
+                    | retired_cfb_cipher_aliases() .
+
+-type retired_cfb_cipher_aliases() :: aes_cfb8      % aes_*_cfb8
+                                    | aes_cfb128    % aes_*_cfb128
+                                    | des3_cbf      % des_ede3_cfb, cfb misspelled
+                                    | des3_cfb      % des_ede3_cfb 
+                                    | des_ede3_cbf .% cfb misspelled
+
+
+%%%----
+-type ctr_cipher() :: aes_128_ctr
+                    | aes_192_ctr
+                    | aes_256_ctr
+                    | retired_ctr_cipher_aliases() .
+
+-type retired_ctr_cipher_aliases() :: aes_ctr .  % aes_*_ctr
+
+%%%----
+-type ecb_cipher() :: aes_128_ecb
+                    | aes_192_ecb
+                    | aes_256_ecb
+                    | blowfish_ecb
+                    | retired_ecb_cipher_aliases() .
+
+-type retired_ecb_cipher_aliases() :: aes_ecb .
+
+%%%----
 -type aead_cipher() :: aes_gcm | aes_ccm | chacha20_poly1305 .
--type cfb_cipher()  :: aes_cfb128 | aes_cfb8 | blowfish_cfb64 | des3_cfb | des_cfb .
 
--type block_cipher_without_iv() :: ecb_cipher() .
--type ecb_cipher()  :: des_ecb | blowfish_ecb | aes_ecb .
+
+%%%----- end old cipher schema ------------------------------------
+%%%----------------------------------------------------------------
 
 -type key() :: iodata().
 -type des3_key() :: [key()].
@@ -284,11 +436,26 @@
 -type sha1() :: sha .
 -type sha2() :: sha224 | sha256 | sha384 | sha512 .
 -type sha3() :: sha3_224 | sha3_256 | sha3_384 | sha3_512 .
+-type blake2() :: blake2b | blake2s .
 
 -type compatibility_only_hash() :: md5 | md4 .
 
 -type crypto_integer() :: binary() | integer().
 
+%%%
+%% Exceptions
+%%   error:badarg
+%%   error:notsup
+-type run_time_error() :: no_return().
+
+%% Exceptions
+%%   error:{badarg,Reason::term()}
+%%   error:{notsup,Reason::term()}
+%%   error:{error,Reason::term()}
+-type descriptive_error() :: no_return() .
+
+
+%%--------------------------------------------------------------------
 -compile(no_native).
 -on_load(on_load/0).
 -define(CRYPTO_NIF_VSN,302).
@@ -326,11 +493,8 @@ stop() ->
                                       | {macs,    Macs}
                                       | {curves,  Curves}
                                       | {rsa_opts, RSAopts},
-                             Hashs :: [sha1() | sha2() | sha3() | ripemd160 | compatibility_only_hash()],
-                             Ciphers :: [stream_cipher()
-                                         | block_cipher_with_iv() | block_cipher_without_iv()
-                                         | aead_cipher()
-                                        ], 
+                             Hashs :: [sha1() | sha2() | sha3() | blake2() | ripemd160 | compatibility_only_hash()],
+                             Ciphers :: [cipher()],
                              PKs :: [rsa | dss | ecdsa | dh | ecdh | ec_gf2m],
                              Macs :: [hmac | cmac | poly1305],
                              Curves :: [ec_named_curve() | edwards_curve_dh() | edwards_curve_ed()],
@@ -338,7 +502,7 @@ stop() ->
 supports()->
     {Hashs, PubKeys, Ciphers, Macs, Curves, RsaOpts} = algorithms(),
     [{hashs, Hashs},
-     {ciphers, Ciphers},
+     {ciphers, prepend_cipher_aliases(Ciphers)},
      {public_keys, PubKeys},
      {macs, Macs},
      {curves, Curves},
@@ -364,9 +528,18 @@ enable_fips_mode(_) -> ?nif_stub.
 %%%
 %%%================================================================
 
--define(HASH_HASH_ALGORITHM, sha1() | sha2() | sha3() | ripemd160 | compatibility_only_hash() ).
+-type hash_algorithm() :: sha1() | sha2() | sha3() | blake2() | ripemd160 | compatibility_only_hash() .
 
--spec hash(Type, Data) -> Digest when Type :: ?HASH_HASH_ALGORITHM,
+-spec hash_info(Type) -> Result | run_time_error()
+                             when Type :: hash_algorithm(),
+                                  Result :: #{size := integer(),
+                                              block_size := integer(),
+                                              type := integer()
+                                             } .
+hash_info(Type) ->
+    notsup_to_error(hash_info_nif(Type)).
+
+-spec hash(Type, Data) -> Digest when Type :: hash_algorithm(),
                                       Data :: iodata(),
                                       Digest :: binary().
 hash(Type, Data) ->
@@ -376,7 +549,7 @@ hash(Type, Data) ->
 
 -opaque hash_state() :: reference().
 
--spec hash_init(Type) -> State when Type :: ?HASH_HASH_ALGORITHM,
+-spec hash_init(Type) -> State when Type :: hash_algorithm(),
                                     State :: hash_state().
 hash_init(Type) -> 
     notsup_to_error(hash_init_nif(Type)).
@@ -402,12 +575,12 @@ hash_final(Context) ->
 
 %%%---- HMAC
 
--define(HMAC_HASH_ALGORITHM,  sha1() | sha2() | sha3() | compatibility_only_hash()).
+-type hmac_hash_algorithm() ::  sha1() | sha2() | sha3() | compatibility_only_hash().
 
 %%%---- hmac/3,4 
 
 -spec hmac(Type, Key, Data) -> 
-                  Mac when Type :: ?HMAC_HASH_ALGORITHM,
+                  Mac when Type :: hmac_hash_algorithm(),
                            Key :: iodata(),
                            Data :: iodata(),
                            Mac :: binary() .
@@ -416,7 +589,7 @@ hmac(Type, Key, Data) ->
     hmac(Type, Key, Data1, undefined, erlang:byte_size(Data1), max_bytes()).
 
 -spec hmac(Type, Key, Data, MacLength) -> 
-                  Mac when Type :: ?HMAC_HASH_ALGORITHM,
+                  Mac when Type :: hmac_hash_algorithm(),
                            Key :: iodata(),
                            Data :: iodata(),
                            MacLength :: integer(),
@@ -431,7 +604,7 @@ hmac(Type, Key, Data, MacLength) ->
 -opaque hmac_state() :: binary().
 
 -spec hmac_init(Type, Key) ->
-                       State when Type :: ?HMAC_HASH_ALGORITHM,
+                       State when Type :: hmac_hash_algorithm(),
                                   Key :: iodata(),
                                   State :: hmac_state() .
 hmac_init(Type, Key) ->
@@ -469,7 +642,7 @@ hmac_final_n(Context, HashLen) ->
                            Data :: iodata(),
                            Mac :: binary().
 cmac(Type, Key, Data) ->
-    notsup_to_error(cmac_nif(Type, Key, Data)).
+    notsup_to_error(cmac_nif(alias(Type), Key, Data)).
 
 -spec cmac(Type, Key, Data, MacLength) ->
                   Mac when Type :: ?CMAC_CIPHER_ALGORITHM,
@@ -477,8 +650,9 @@ cmac(Type, Key, Data) ->
                            Data :: iodata(),
                            MacLength :: integer(), 
                            Mac :: binary().
+
 cmac(Type, Key, Data, MacLength) ->
-    erlang:binary_part(cmac(Type, Key, Data), 0, MacLength).
+    erlang:binary_part(cmac(alias(Type), Key, Data), 0, MacLength).
 
 %%%---- POLY1305
 
@@ -489,97 +663,182 @@ poly1305(Key, Data) ->
 
 %%%================================================================
 %%%
-%%% Encrypt/decrypt
+%%% Encrypt/decrypt, The "Old API"
 %%%
 %%%================================================================
 
-%%%---- Block ciphers
+-define(COMPAT(CALL),
+        try begin CALL end
+        catch
+            error:{error, {_File,_Line}, _Reason} ->
+                error(badarg);
+            error:{E, {_File,_Line}, _Reason} when E==notsup ; E==badarg ->
+                error(E)
+        end).
+
+%%%---- Cipher info
+%%%----------------------------------------------------------------
+-spec cipher_info(Type) -> Result | run_time_error()
+                               when Type :: cipher(),
+                                    Result :: #{key_length := integer(),
+                                                iv_length := integer(),
+                                                block_size := integer(),
+                                                mode := CipherModes,
+                                                type := undefined | integer()
+                                               },
+                                    CipherModes :: undefined
+                                                 | cbc_mode
+                                                 | ccm_mode
+                                                 | cfb_mode
+                                                 | ctr_mode
+                                                 | ecb_mode
+                                                 | gcm_mode
+                                                 | ige_mode
+                                                 | ocb_mode
+                                                 | ofb_mode
+                                                 | wrap_mode
+                                                 | xts_mode
+                                                   .
+
+%% These ciphers are not available via the EVP interface on older cryptolibs.
+cipher_info(aes_ctr) ->
+    #{block_size => 1,iv_length => 16,key_length => 32,mode => ctr_mode,type => undefined};
+cipher_info(aes_128_ctr) ->
+    #{block_size => 1,iv_length => 16,key_length => 16,mode => ctr_mode,type => undefined};
+cipher_info(aes_192_ctr) ->
+    #{block_size => 1,iv_length => 16,key_length => 24,mode => ctr_mode,type => undefined};
+cipher_info(aes_256_ctr) ->
+    #{block_size => 1,iv_length => 16,key_length => 32,mode => ctr_mode,type => undefined};
+%% This cipher is handled specialy.
+cipher_info(aes_ige256) ->
+    #{block_size => 16,iv_length => 32,key_length => 16,mode => ige_mode,type => undefined};
+cipher_info(Type) ->
+    cipher_info_nif(alias(Type)).
 
--spec block_encrypt(Type::block_cipher_with_iv(), Key::key()|des3_key(), Ivec::binary(), PlainText::iodata()) -> binary();
+%%%---- Block ciphers
+%%%----------------------------------------------------------------
+-spec block_encrypt(Type::block_cipher_with_iv(), Key::key()|des3_key(), Ivec::binary(), PlainText::iodata()) ->
+                           binary() | run_time_error();
                    (Type::aead_cipher(),  Key::iodata(), Ivec::binary(), {AAD::binary(), PlainText::iodata()}) ->
-                           {binary(), binary()};
+                           {binary(), binary()} | run_time_error();
                    (aes_gcm | aes_ccm, Key::iodata(), Ivec::binary(), {AAD::binary(), PlainText::iodata(), TagLength::1..16}) ->
-                           {binary(), binary()}.
-
-block_encrypt(Type, Key, Ivec, PlainText) when Type =:= des_cbc;
-                                               Type =:= des_cfb;
-                                               Type =:= blowfish_cbc;
-                                               Type =:= blowfish_cfb64;
-                                               Type =:= blowfish_ofb64;
-                                               Type =:= aes_cbc128;
-                                               Type =:= aes_cfb8;
-                                               Type =:= aes_cfb128;
-                                               Type =:= aes_cbc256;
-                                               Type =:= aes_cbc;
-                                               Type =:= rc2_cbc ->
-    block_crypt_nif(Type, Key, Ivec, PlainText, true);
-block_encrypt(Type, Key0, Ivec, PlainText) when Type =:= des3_cbc;
-                                                Type =:= des_ede3 ->
-    Key = check_des3_key(Key0),
-    block_crypt_nif(des_ede3_cbc, Key, Ivec, PlainText, true);
-block_encrypt(des3_cbf, Key0, Ivec, PlainText) -> % cfb misspelled
-    Key = check_des3_key(Key0),
-    block_crypt_nif(des_ede3_cbf, Key, Ivec, PlainText, true);
-block_encrypt(des3_cfb, Key0, Ivec, PlainText) ->
-    Key = check_des3_key(Key0),
-    block_crypt_nif(des_ede3_cfb, Key, Ivec, PlainText, true);
+                           {binary(), binary()} | run_time_error().
+
+
 block_encrypt(aes_ige256, Key, Ivec, PlainText) ->
     notsup_to_error(aes_ige_crypt_nif(Key, Ivec, PlainText, true));
-block_encrypt(Type, Key, Ivec, {AAD, PlainText}) when Type =:= aes_gcm;
-                                                      Type =:= aes_ccm ->
-    aead_encrypt(Type, Key, Ivec, AAD, PlainText);
-block_encrypt(Type, Key, Ivec, {AAD, PlainText, TagLength}) when Type =:= aes_gcm;
-                                                                 Type =:= aes_ccm ->
-    aead_encrypt(Type, Key, Ivec, AAD, PlainText, TagLength);
-block_encrypt(chacha20_poly1305=Type, Key, Ivec, {AAD, PlainText}) ->
-    aead_encrypt(Type, Key, Ivec, AAD, PlainText, 16).
 
+block_encrypt(Type, Key0, Ivec, Data) ->
+    Key = iolist_to_binary(Key0),
+    ?COMPAT(
+       case Data of
+           {AAD, PlainText} ->
+               crypto_aead(alias(Type,Key), Key, Ivec, PlainText, AAD, true);
+           {AAD, PlainText, TagLength} ->
+               crypto_aead(alias(Type,Key), Key, Ivec, PlainText, AAD, TagLength, true);
+           PlainText ->
+               crypto_one_time(alias(Type,Key), Key, Ivec, PlainText, true)
+       end).
 
--spec block_decrypt(Type::block_cipher_with_iv(), Key::key()|des3_key(), Ivec::binary(), Data::iodata()) -> binary();
-		   (Type::aead_cipher(), Key::iodata(), Ivec::binary(),
-		    {AAD::binary(), Data::iodata(), Tag::binary()}) -> binary() | error.
-block_decrypt(Type, Key, Ivec, Data) when Type =:= des_cbc;
-                                          Type =:= des_cfb;
-                                          Type =:= blowfish_cbc;
-                                          Type =:= blowfish_cfb64;
-                                          Type =:= blowfish_ofb64;
-					  Type =:= aes_cbc;
-                                          Type =:= aes_cbc128;
-                                          Type =:= aes_cfb8;
-                                          Type =:= aes_cfb128;
-                                          Type =:= aes_cbc256;
-                                          Type =:= rc2_cbc ->
-    block_crypt_nif(Type, Key, Ivec, Data, false);
-block_decrypt(Type, Key0, Ivec, Data) when Type =:= des3_cbc;
-                                           Type =:= des_ede3 ->
-    Key = check_des3_key(Key0),
-    block_crypt_nif(des_ede3_cbc, Key, Ivec, Data, false);
-block_decrypt(des3_cbf, Key0, Ivec, Data) -> % cfb misspelled
-    Key = check_des3_key(Key0),
-    block_crypt_nif(des_ede3_cbf, Key, Ivec, Data, false);
-block_decrypt(des3_cfb, Key0, Ivec, Data) ->
-    Key = check_des3_key(Key0),
-    block_crypt_nif(des_ede3_cfb, Key, Ivec, Data, false);
-block_decrypt(aes_ige256, Key, Ivec, Data) ->
-    notsup_to_error(aes_ige_crypt_nif(Key, Ivec, Data, false));
-block_decrypt(Type, Key, Ivec, {AAD, Data, Tag}) when Type =:= aes_gcm;
-                                                      Type =:= aes_ccm;
-                                                      Type =:= chacha20_poly1305 ->
-    aead_decrypt(Type, Key, Ivec, AAD, Data, Tag).
+-spec block_encrypt(Type::block_cipher_without_iv(), Key::key(), PlainText::iodata()) ->
+                           binary() | run_time_error().
 
+block_encrypt(Type, Key0, PlainText) ->
+    Key = iolist_to_binary(Key0),
+    ?COMPAT(crypto_one_time(alias(Type,Key), Key, PlainText, true)).
 
--spec block_encrypt(Type::block_cipher_without_iv(), Key::key(), PlainText::iodata()) -> binary().
 
-block_encrypt(Type, Key, PlainText) ->
-    block_crypt_nif(Type, Key, PlainText, true).
+%%%----------------------------------------------------------------
+%%%----------------------------------------------------------------
+-spec block_decrypt(Type::block_cipher_with_iv(), Key::key()|des3_key(), Ivec::binary(), Data::iodata()) ->
+                           binary() | run_time_error();
+		   (Type::aead_cipher(), Key::iodata(), Ivec::binary(),
+		    {AAD::binary(), Data::iodata(), Tag::binary()}) ->
+                           binary() | error | run_time_error() .
+
+block_decrypt(aes_ige256, Key, Ivec, Data) ->
+    notsup_to_error(aes_ige_crypt_nif(Key, Ivec, Data, false));
 
+block_decrypt(Type, Key0, Ivec, Data) ->
+    Key = iolist_to_binary(Key0),
+    ?COMPAT(
+       case Data of
+           {AAD, CryptoText, Tag} ->
+               crypto_aead(alias(Type,Key), Key, Ivec, CryptoText, AAD, Tag, false);
+           CryptoText ->
+               crypto_one_time(alias(Type,Key), Key, Ivec, CryptoText, false)
+       end).
+
+
+-spec block_decrypt(Type::block_cipher_without_iv(), Key::key(), Data::iodata()) ->
+                           binary() | run_time_error().
+
+block_decrypt(Type, Key0, CryptoText) ->
+    Key = iolist_to_binary(Key0),
+    ?COMPAT(crypto_one_time(alias(Type,Key), Key, CryptoText, false)).
+
+%%%-------- Stream ciphers API
+
+-opaque stream_state() :: {stream_cipher(),
+                           crypto_state() | {crypto_state(),flg_undefined}
+                          }.
+
+%%%---- stream_init
+-spec stream_init(Type, Key, IVec) -> State | run_time_error()
+                                          when Type :: stream_cipher(),
+                                               Key :: iodata(),
+                                               IVec ::binary(),
+                                               State :: stream_state() .
+stream_init(Type, Key0, IVec) when is_binary(IVec) -> 
+    Key = iolist_to_binary(Key0),
+    Ref = ?COMPAT(ng_crypto_init_nif(alias(Type,Key),
+                                     Key, iolist_to_binary(IVec),
+                                     undefined)
+                 ),
+    {Type, {Ref,flg_undefined}}.
+
+
+-spec stream_init(Type, Key) -> State | run_time_error()
+                                    when Type :: rc4,
+                                         Key :: iodata(),
+                                         State :: stream_state() .
+stream_init(rc4 = Type, Key0) ->
+    Key = iolist_to_binary(Key0),
+    Ref = ?COMPAT(ng_crypto_init_nif(alias(Type,Key),
+                                     Key, <<>>,
+                                     undefined)
+                 ),
+    {Type, {Ref,flg_undefined}}.
+
+%%%---- stream_encrypt
+-spec stream_encrypt(State, PlainText) -> {NewState, CipherText} | run_time_error()
+                                              when State :: stream_state(),
+                                                   PlainText :: iodata(),
+                                                   NewState :: stream_state(),
+                                                   CipherText :: iodata() .
+stream_encrypt(State, Data) ->
+    crypto_stream_emulate(State, Data, true).
 
--spec block_decrypt(Type::block_cipher_without_iv(), Key::key(), Data::iodata()) -> binary().
+%%%---- stream_decrypt
+-spec stream_decrypt(State, CipherText) -> {NewState, PlainText} | run_time_error()
+                                              when State :: stream_state(),
+                                                   CipherText :: iodata(),
+                                                   NewState :: stream_state(),
+                                                   PlainText :: iodata() .
+stream_decrypt(State, Data) ->
+    crypto_stream_emulate(State, Data, false).
 
-block_decrypt(Type, Key, Data) ->
-    block_crypt_nif(Type, Key, Data, false).
+%%%-------- helpers
+crypto_stream_emulate({Cipher,{Ref0,flg_undefined}}, Data, EncryptFlag) when is_reference(Ref0) ->
+    ?COMPAT(begin
+                Ref = ng_crypto_init_nif(Ref0, <<>>, <<>>, EncryptFlag),
+                {{Cipher,Ref}, crypto_update(Ref, Data)}
+            end);
 
+crypto_stream_emulate({Cipher,Ref}, Data, _) when is_reference(Ref) ->
+    ?COMPAT({{Cipher,Ref}, crypto_update(Ref, Data)}).
 
+%%%----------------------------------------------------------------
 -spec next_iv(Type:: cbc_cipher(), Data) -> NextIVec when % Type :: cbc_cipher(), %des_cbc | des3_cbc | aes_cbc | aes_ige,
                                            Data :: iodata(),
                                            NextIVec :: binary().
@@ -606,48 +865,253 @@ next_iv(des_cfb, Data, IVec) ->
 next_iv(Type, Data, _Ivec) ->
     next_iv(Type, Data).
 
-%%%---- Stream ciphers
+%%%================================================================
+%%%
+%%% Encrypt/decrypt, The "New API"
+%%%
+%%%================================================================
 
--opaque stream_state() :: {stream_cipher(), reference()}.
+-opaque crypto_state() :: reference() .
 
--type stream_cipher() :: rc4 | aes_ctr | chacha20 .
 
--spec stream_init(Type, Key, IVec) -> State when Type :: aes_ctr | chacha20,
-                                                 Key :: iodata(),
-                                                 IVec :: binary(),
-                                                 State :: stream_state() .
-stream_init(aes_ctr, Key, Ivec) ->
-    {aes_ctr, aes_ctr_stream_init(Key, Ivec)};
-stream_init(chacha20, Key, Ivec) ->
-    {chacha20, chacha20_stream_init(Key,Ivec)}.
+%%%----------------------------------------------------------------
+%%%
+%%% Create and initialize a new state for encryption or decryption
+%%% 
 
--spec stream_init(Type, Key) -> State when Type :: rc4,
-                                           Key :: iodata(),
-                                           State :: stream_state() .
-stream_init(rc4, Key) ->
-    {rc4, notsup_to_error(rc4_set_key(Key))}.
+-spec crypto_init(Cipher, Key, EncryptFlag) -> State | descriptive_error()
+                                                   when Cipher :: cipher_no_iv(),
+                                                        Key :: iodata(),
+                                                        EncryptFlag :: boolean(),
+                                                        State :: crypto_state() .
+crypto_init(Cipher, Key, EncryptFlag) ->
+    %% The IV is supposed to be supplied by calling crypto_update/3
+    ng_crypto_init_nif(Cipher, iolist_to_binary(Key), <<>>, EncryptFlag).
 
--spec stream_encrypt(State, PlainText) -> {NewState, CipherText}
-                                              when State :: stream_state(),
-                                                   PlainText :: iodata(),
-                                                   NewState :: stream_state(),
-                                                   CipherText :: iodata() .
-stream_encrypt(State, Data0) ->
-    Data = iolist_to_binary(Data0),
-    MaxByts = max_bytes(),
-    stream_crypt(fun do_stream_encrypt/2, State, Data, erlang:byte_size(Data), MaxByts, []).
 
--spec stream_decrypt(State, CipherText) -> {NewState, PlainText}
-                                              when State :: stream_state(),
-                                                   CipherText :: iodata(),
-                                                   NewState :: stream_state(),
-                                                   PlainText :: iodata() .
-stream_decrypt(State, Data0) ->
-    Data = iolist_to_binary(Data0),
-    MaxByts = max_bytes(),
-    stream_crypt(fun do_stream_decrypt/2, State, Data, erlang:byte_size(Data), MaxByts, []).
+-spec crypto_init(Cipher, Key, IV, EncryptFlag) -> State | descriptive_error()
+                                                       when Cipher :: cipher_iv(),
+                                                            Key :: iodata(),
+                                                            IV :: iodata(),
+                                                            EncryptFlag :: boolean(),
+                                                            State :: crypto_state() .
+crypto_init(Cipher, Key, IV, EncryptFlag) ->
+    ng_crypto_init_nif(Cipher, iolist_to_binary(Key), iolist_to_binary(IV), EncryptFlag).
 
 
+
+%%%----------------------------------------------------------------
+-spec crypto_init_dyn_iv(Cipher, Key, EncryptFlag) -> State | descriptive_error()
+                                                          when Cipher :: cipher_iv(),
+                                                               Key :: iodata(),
+                                                               EncryptFlag :: boolean(),
+                                                               State :: crypto_state() .
+crypto_init_dyn_iv(Cipher, Key, EncryptFlag) ->
+    %% The IV is supposed to be supplied by calling crypto_update/3
+    ng_crypto_init_nif(Cipher, iolist_to_binary(Key), undefined, EncryptFlag).
+
+%%%----------------------------------------------------------------
+%%%
+%%% Encrypt/decrypt a sequence of bytes.  The sum of the sizes
+%%% of all blocks must be an integer multiple of the crypto's
+%%% blocksize.
+%%% 
+
+-spec crypto_update(State, Data) -> Result | descriptive_error()
+                                        when State :: crypto_state(),
+                                             Data :: iodata(),
+                                             Result :: binary() .
+crypto_update(State, Data0) ->
+    case iolist_to_binary(Data0) of
+        <<>> ->
+            <<>>;                           % Known to fail on OpenSSL 0.9.8h
+        Data ->
+            ng_crypto_update_nif(State, Data)
+    end.
+
+
+%%%----------------------------------------------------------------
+-spec crypto_update_dyn_iv(State, Data, IV) -> Result | descriptive_error()
+                                                   when State :: crypto_state(),
+                                                        Data :: iodata(),
+                                                        IV :: iodata(),
+                                                        Result :: binary() .
+crypto_update_dyn_iv(State, Data0, IV) ->
+    %% When State is from State = crypto_init(Cipher, Key, undefined, EncryptFlag)
+    case iolist_to_binary(Data0) of
+        <<>> ->
+            <<>>;                           % Known to fail on OpenSSL 0.9.8h
+        Data ->
+            ng_crypto_update_nif(State, Data, iolist_to_binary(IV))
+    end.
+
+%%%----------------------------------------------------------------
+%%%
+%%% Encrypt/decrypt one set bytes.
+%%% The size must be an integer multiple of the crypto's blocksize.
+%%% 
+
+-spec crypto_one_time(Cipher, Key, Data, EncryptFlag) ->
+                             Result | descriptive_error()
+                                 when Cipher :: cipher_no_iv(),
+                                      Key :: iodata(),
+                                      Data :: iodata(),
+                                      EncryptFlag :: boolean(),
+                                      Result :: binary() .
+
+crypto_one_time(Cipher, Key, Data, EncryptFlag) ->
+    crypto_one_time(Cipher, Key, <<>>, Data, EncryptFlag).
+
+-spec crypto_one_time(Cipher, Key, IV, Data, EncryptFlag) ->
+                             Result | descriptive_error()
+                                 when Cipher :: cipher_iv(),
+                                      Key :: iodata(),
+                                      IV :: iodata(),
+                                      Data :: iodata(),
+                                      EncryptFlag :: boolean(),
+                                      Result :: binary() .
+
+crypto_one_time(Cipher, Key, IV, Data0, EncryptFlag) ->
+    case iolist_to_binary(Data0) of
+        <<>> ->
+            <<>>;                           % Known to fail on OpenSSL 0.9.8h
+        Data ->
+            ng_crypto_one_time_nif(Cipher,
+                                   iolist_to_binary(Key), iolist_to_binary(IV), Data,
+                                   EncryptFlag)
+    end.
+
+
+-spec crypto_aead(Cipher, Key, IV, InText, AAD, EncFlag::true) ->
+                             Result | descriptive_error()
+                                 when Cipher :: cipher_aead(),
+                                      Key :: iodata(),
+                                      IV :: iodata(),
+                                      InText :: iodata(),
+                                      AAD :: iodata(),
+                                      Result :: EncryptResult,
+                                      EncryptResult :: {OutCryptoText, OutTag},
+                                      OutCryptoText :: binary(),
+                                      OutTag :: binary().
+
+crypto_aead(Cipher, Key, IV, PlainText, AAD, true) ->
+    crypto_aead(Cipher, Key, IV, PlainText, AAD, aead_tag_len(Cipher), true).
+
+
+-spec crypto_aead(Cipher, Key, IV, InText, AAD, TagOrTagLength, EncFlag) ->
+                             Result | descriptive_error()
+                                 when Cipher :: cipher_aead(),
+                                      Key :: iodata(),
+                                      IV :: iodata(),
+                                      InText :: iodata(),
+                                      AAD :: iodata(),
+                                      TagOrTagLength :: EncryptTagLength | DecryptTag,
+                                      EncryptTagLength :: non_neg_integer(), % or pos_integer() 1..
+                                      DecryptTag :: iodata(),
+                                      EncFlag :: boolean(),
+                                      Result :: EncryptResult | DecryptResult,
+                                      EncryptResult :: {OutCryptoText, OutTag},
+                                      DecryptResult :: OutPlainText | error,
+                                      OutCryptoText :: binary(),
+                                      OutTag :: binary(),
+                                      OutPlainText :: binary().
+
+crypto_aead(Cipher, Key, IV, TextIn, AAD, TagOrTagLength, EncFlg) ->
+    aead_cipher(Cipher, Key, IV, TextIn, AAD, TagOrTagLength, EncFlg).
+
+
+aead_tag_len(chacha20_poly1305) -> 16;
+aead_tag_len(aes_ccm    ) -> 12;
+aead_tag_len(aes_128_ccm) -> 12;
+aead_tag_len(aes_192_ccm) -> 12;
+aead_tag_len(aes_256_ccm) -> 12;
+aead_tag_len(aes_gcm    ) -> 16;
+aead_tag_len(aes_128_gcm) -> 16;
+aead_tag_len(aes_192_gcm) -> 16;
+aead_tag_len(aes_256_gcm) -> 16;
+aead_tag_len(_) -> error({badarg, "Not an AEAD cipher"}).
+
+%%%----------------------------------------------------------------
+%%% NIFs
+
+-spec ng_crypto_init_nif(atom(), binary(), binary()|undefined, boolean()|undefined ) ->
+                                crypto_state() | descriptive_error()
+                      ; (crypto_state(), <<>>, <<>>, boolean())
+                        -> crypto_state() | descriptive_error().
+
+ng_crypto_init_nif(_Cipher, _Key, _IVec, _EncryptFlg) -> ?nif_stub.
+
+
+-spec ng_crypto_update_nif(crypto_state(), binary()) ->
+                                  binary() | descriptive_error() .
+ng_crypto_update_nif(_State, _Data) -> ?nif_stub.
+
+-spec ng_crypto_update_nif(crypto_state(), binary(), binary()) ->
+                                  binary() | descriptive_error() .
+ng_crypto_update_nif(_State, _Data, _IV) -> ?nif_stub.
+
+
+-spec ng_crypto_one_time_nif(atom(), binary(), binary(), binary(), boolean() ) ->
+                                    binary() | descriptive_error().
+ng_crypto_one_time_nif(_Cipher, _Key, _IVec, _Data, _EncryptFlg) -> ?nif_stub.
+
+%%%----------------------------------------------------------------
+%%% Cipher aliases
+%%%
+prepend_cipher_aliases(L) ->
+    [des3_cbc, des_ede3, des_ede3_cbf, des3_cbf, des3_cfb, aes_cbc128, aes_cbc256 | L].
+
+%%%---- des_ede3_cbc
+alias(des3_cbc)     -> des_ede3_cbc;
+alias(des_ede3)     -> des_ede3_cbc;
+%%%---- des_ede3_cfb
+alias(des_ede3_cbf) -> des_ede3_cfb;
+alias(des3_cbf)     -> des_ede3_cfb;
+alias(des3_cfb)     -> des_ede3_cfb;
+%%%---- aes_*_cbc
+alias(aes_cbc128)   -> aes_128_cbc;
+alias(aes_cbc256)   -> aes_256_cbc;
+
+alias(Alg) -> Alg.
+
+
+%%%---- des_ede3_cbc
+alias(des3_cbc, _)     -> des_ede3_cbc;
+alias(des_ede3, _)     -> des_ede3_cbc;
+%%%---- des_ede3_cfb
+alias(des_ede3_cbf,_ ) -> des_ede3_cfb;
+alias(des3_cbf, _)     -> des_ede3_cfb;
+alias(des3_cfb, _)     -> des_ede3_cfb;
+%%%---- aes_*_cbc
+alias(aes_cbc128, _)   -> aes_128_cbc;
+alias(aes_cbc256, _)   -> aes_256_cbc;
+
+alias(aes_cbc, Key) when size(Key)==128  -> aes_128_cbc;
+alias(aes_cbc, Key) when size(Key)==192  -> aes_192_cbc;
+alias(aes_cbc, Key) when size(Key)==256  -> aes_256_cbc;
+
+alias(aes_cfb8, Key) when size(Key)==128  -> aes_128_cfb8;
+alias(aes_cfb8, Key) when size(Key)==192  -> aes_192_cfb8;
+alias(aes_cfb8, Key) when size(Key)==256  -> aes_256_cfb8;
+
+alias(aes_cfb128, Key) when size(Key)==128  -> aes_128_cfb128;
+alias(aes_cfb128, Key) when size(Key)==192  -> aes_192_cfb128;
+alias(aes_cfb128, Key) when size(Key)==256  -> aes_256_cfb128;
+
+alias(aes_ctr, Key) when size(Key)==128  -> aes_128_ctr;
+alias(aes_ctr, Key) when size(Key)==192  -> aes_192_ctr;
+alias(aes_ctr, Key) when size(Key)==256  -> aes_256_ctr;
+
+alias(aes_gcm, Key) when size(Key)==128  -> aes_128_gcm;
+alias(aes_gcm, Key) when size(Key)==192  -> aes_192_gcm;
+alias(aes_gcm, Key) when size(Key)==256  -> aes_256_gcm;
+
+alias(aes_ccm, Key) when size(Key)==128  -> aes_128_ccm;
+alias(aes_ccm, Key) when size(Key)==192  -> aes_192_ccm;
+alias(aes_ccm, Key) when size(Key)==256  -> aes_256_ccm;
+
+alias(Alg, _) -> Alg.
+
 %%%================================================================
 %%%
 %%% RAND - pseudo random numbers using RN_ and BN_ functions in crypto lib
@@ -679,34 +1143,73 @@ rand_seed_s() ->
 rand_seed_alg(Alg) ->
     rand:seed(rand_seed_alg_s(Alg)).
 
+-spec rand_seed_alg(Alg :: atom(), Seed :: term()) ->
+                           {rand:alg_handler(),
+                            atom() | rand_cache_seed()}.
+rand_seed_alg(Alg, Seed) ->
+    rand:seed(rand_seed_alg_s(Alg, Seed)).
+
 -define(CRYPTO_CACHE_BITS, 56).
+-define(CRYPTO_AES_BITS, 58).
+
 -spec rand_seed_alg_s(Alg :: atom()) ->
                              {rand:alg_handler(),
                               atom() | rand_cache_seed()}.
-rand_seed_alg_s(?MODULE) ->
-    {#{ type => ?MODULE,
-        bits => 64,
-        next => fun ?MODULE:rand_plugin_next/1,
-        uniform => fun ?MODULE:rand_plugin_uniform/1,
-        uniform_n => fun ?MODULE:rand_plugin_uniform/2},
-     no_seed};
-rand_seed_alg_s(crypto_cache) ->
+rand_seed_alg_s({AlgHandler, _AlgState} = State) when is_map(AlgHandler) ->
+    State;
+rand_seed_alg_s({Alg, AlgState}) when is_atom(Alg) ->
+    {mk_alg_handler(Alg),AlgState};
+ rand_seed_alg_s(Alg) when is_atom(Alg) ->
+    {mk_alg_handler(Alg),mk_alg_state(Alg)}.
+%%
+-spec rand_seed_alg_s(Alg :: atom(), Seed :: term()) ->
+                             {rand:alg_handler(),
+                              atom() | rand_cache_seed()}.
+rand_seed_alg_s(Alg, Seed) when is_atom(Alg) ->
+    {mk_alg_handler(Alg),mk_alg_state({Alg,Seed})}.
+
+mk_alg_handler(?MODULE = Alg) ->
+    #{ type => Alg,
+       bits => 64,
+       next => fun ?MODULE:rand_plugin_next/1,
+       uniform => fun ?MODULE:rand_plugin_uniform/1,
+       uniform_n => fun ?MODULE:rand_plugin_uniform/2};
+mk_alg_handler(crypto_cache = Alg) ->
+    #{ type => Alg,
+       bits => ?CRYPTO_CACHE_BITS,
+       next => fun ?MODULE:rand_cache_plugin_next/1};
+mk_alg_handler(crypto_aes = Alg) ->
+    #{ type => Alg,
+       bits => ?CRYPTO_AES_BITS,
+       next => fun ?MODULE:rand_plugin_aes_next/1,
+       jump => fun ?MODULE:rand_plugin_aes_jump/1}.
+
+mk_alg_state(?MODULE) ->
+    no_seed;
+mk_alg_state(crypto_cache) ->
     CacheBits = ?CRYPTO_CACHE_BITS,
-    EnvCacheSize =
-        application:get_env(
-          crypto, rand_cache_size, CacheBits * 16), % Cache 16 * 8 words
-    Bytes = (CacheBits + 7) div 8,
+    BytesPerWord = (CacheBits + 7) div 8,
+    GenBytes =
+        ((rand_cache_size() + (2*BytesPerWord - 1)) div BytesPerWord)
+        * BytesPerWord,
+    {CacheBits, GenBytes, <<>>};
+mk_alg_state({crypto_aes,Seed}) ->
+    %% 16 byte words (128 bit crypto blocks)
+    GenWords = (rand_cache_size() + 31) div 16,
+    Key = crypto:hash(sha256, Seed),
+    {F,Count} = longcount_seed(Seed),
+    {Key,GenWords,F,Count}.
+
+rand_cache_size() ->
+    DefaultCacheSize = 1024,
     CacheSize =
-        case ((EnvCacheSize + (Bytes - 1)) div Bytes) * Bytes of
-            Sz when is_integer(Sz), Bytes =< Sz ->
-                Sz;
-            _ ->
-                Bytes
-        end,
-    {#{ type => crypto_cache,
-        bits => CacheBits,
-        next => fun ?MODULE:rand_cache_plugin_next/1},
-     {CacheBits, CacheSize, <<>>}}.
+        application:get_env(crypto, rand_cache_size, DefaultCacheSize),
+    if
+        is_integer(CacheSize), 0 =< CacheSize ->
+            CacheSize;
+        true ->
+            DefaultCacheSize
+    end.
 
 rand_plugin_next(Seed) ->
     {bytes_to_integer(strong_rand_range(1 bsl 64)), Seed}.
@@ -717,12 +1220,97 @@ rand_plugin_uniform(State) ->
 rand_plugin_uniform(Max, State) ->
     {bytes_to_integer(strong_rand_range(Max)) + 1, State}.
 
-rand_cache_plugin_next({CacheBits, CacheSize, <<>>}) ->
+
+rand_cache_plugin_next({CacheBits, GenBytes, <<>>}) ->
     rand_cache_plugin_next(
-      {CacheBits, CacheSize, strong_rand_bytes(CacheSize)});
-rand_cache_plugin_next({CacheBits, CacheSize, Cache}) ->
+      {CacheBits, GenBytes, strong_rand_bytes(GenBytes)});
+rand_cache_plugin_next({CacheBits, GenBytes, Cache}) ->
     <<I:CacheBits, NewCache/binary>> = Cache,
-    {I, {CacheBits, CacheSize, NewCache}}.
+    {I, {CacheBits, GenBytes, NewCache}}.
+
+
+%% Encrypt 128 bit counter values and use the 58 lowest
+%% encrypted bits as random numbers.
+%%
+%% The 128 bit counter is handled as 4 32 bit words
+%% to avoid bignums.  Generate a bunch of numbers
+%% at the time and cache them.
+%%
+-dialyzer({no_improper_lists, rand_plugin_aes_next/1}).
+rand_plugin_aes_next([V|Cache]) ->
+    {V,Cache};
+rand_plugin_aes_next({Key,GenWords,F,Count}) ->
+    rand_plugin_aes_next(Key, GenWords, F, Count);
+rand_plugin_aes_next({Key,GenWords,F,_JumpBase,Count}) ->
+    rand_plugin_aes_next(Key, GenWords, F, Count).
+%%
+rand_plugin_aes_next(Key, GenWords, F, Count) ->
+    {Cleartext,NewCount} = aes_cleartext(<<>>, F, Count, GenWords),
+    Encrypted = crypto:block_encrypt(aes_ecb, Key, Cleartext),
+    [V|Cache] = aes_cache(Encrypted, {Key,GenWords,F,Count,NewCount}),
+    {V,Cache}.
+
+%% A jump advances the counter 2^512 steps; the jump function
+%% is applied to the jump base and then the number of used
+%% numbers from the cache has to be wasted for the jump to be correct
+%%
+rand_plugin_aes_jump({#{type := crypto_aes} = Alg, Cache}) ->
+    {Alg,rand_plugin_aes_jump(fun longcount_jump/1, 0, Cache)}.
+%% Count cached words and subtract their number from jump
+-dialyzer({no_improper_lists, rand_plugin_aes_jump/3}).
+rand_plugin_aes_jump(Jump, J, [_|Cache]) ->
+    rand_plugin_aes_jump(Jump, J + 1, Cache);
+rand_plugin_aes_jump(Jump, J, {Key,GenWords,F,JumpBase, _Count}) ->
+    rand_plugin_aes_jump(Jump, GenWords - J, Key, GenWords, F, JumpBase);
+rand_plugin_aes_jump(Jump, 0, {Key,GenWords,F,JumpBase}) ->
+    rand_plugin_aes_jump(Jump, 0, Key, GenWords, F, JumpBase).
+%%
+rand_plugin_aes_jump(Jump, Skip, Key, GenWords, F, JumpBase) ->
+    Count = longcount_next_count(Skip, Jump(JumpBase)),
+    {Key,GenWords,F,Count}.
+
+rand_plugin_aes_jump_2pow20(Cache) ->
+    rand_plugin_aes_jump(fun longcount_jump_2pow20/1, 0, Cache).
+
+
+longcount_seed(Seed) ->
+    <<X:64, _:6, F:12, S2:58, S1:58, S0:58>> =
+        crypto:hash(sha256, [Seed,<<"Xoroshiro928">>]),
+    {F,rand:exro928_seed([S0,S1,S2|rand:seed58(13, X)])}.
+
+longcount_next_count(0, Count) ->
+    Count;
+longcount_next_count(N, Count) ->
+    longcount_next_count(N - 1, rand:exro928_next_state(Count)).
+
+longcount_next(Count) ->
+    rand:exro928_next(Count).
+
+longcount_jump(Count) ->
+    rand:exro928_jump_2pow512(Count).
+
+longcount_jump_2pow20(Count) ->
+    rand:exro928_jump_2pow20(Count).
+
+
+%% Build binary with counter values to cache
+aes_cleartext(Cleartext, _F, Count, 0) ->
+    {Cleartext,Count};
+aes_cleartext(Cleartext, F, Count, GenWords) ->
+    {{S0,S1}, NewCount} = longcount_next(Count),
+    aes_cleartext(
+      <<Cleartext/binary, F:12, S1:58, S0:58>>,
+      F, NewCount, GenWords - 1).
+
+%% Parse and cache encrypted counter values aka random numbers
+-dialyzer({no_improper_lists, aes_cache/2}).
+aes_cache(<<>>, Cache) ->
+    Cache;
+aes_cache(
+  <<_:(128 - ?CRYPTO_AES_BITS), V:?CRYPTO_AES_BITS, Encrypted/binary>>,
+  Cache) ->
+    [V|aes_cache(Encrypted, Cache)].
+
 
 strong_rand_range(Range) when is_integer(Range), Range > 0 ->
     BinRange = int_to_bin(Range),
@@ -787,7 +1375,8 @@ rand_seed_nif(_Seed) -> ?nif_stub.
 -type pk_sign_verify_opts() :: [ rsa_sign_verify_opt() ] .
 
 -type rsa_sign_verify_opt() :: {rsa_padding, rsa_sign_verify_padding()}
-                             | {rsa_pss_saltlen, integer()} .
+                             | {rsa_pss_saltlen, integer()}
+                             | {rsa_mgf1_md, sha2()}.
 
 -type rsa_sign_verify_padding() :: rsa_pkcs1_padding | rsa_pkcs1_pss_padding
                                  | rsa_x931_padding | rsa_no_padding
@@ -803,7 +1392,7 @@ rand_seed_nif(_Seed) -> ?nif_stub.
                       DigestType :: rsa_digest_type()
                                   | dss_digest_type()
                                   | ecdsa_digest_type(),
-                      Msg :: binary() | {digest,binary()},
+                      Msg :: iodata() | {digest,iodata()},
                       Key :: rsa_private()
                            | dss_private()
                            | [ecdsa_private() | ecdsa_params()]
@@ -822,7 +1411,7 @@ sign(Algorithm, Type, Data, Key) ->
                                   | dss_digest_type()
                                   | ecdsa_digest_type()
                                   | none,
-                      Msg :: binary() | {digest,binary()},
+                      Msg :: iodata() | {digest,iodata()},
                       Key :: rsa_private()
                            | dss_private()
                            | [ecdsa_private() | ecdsa_params()]
@@ -851,7 +1440,7 @@ pkey_sign_nif(_Algorithm, _Type, _Digest, _Key, _Options) -> ?nif_stub.
                                     | dss_digest_type()
                                     | ecdsa_digest_type()
                                     | none,
-                        Msg :: binary() | {digest,binary()},
+                        Msg :: iodata() | {digest,iodata()},
                         Signature :: binary(),
                         Key :: rsa_public()
                              | dss_public()
@@ -869,7 +1458,7 @@ verify(Algorithm, Type, Data, Signature, Key) ->
                         DigestType :: rsa_digest_type()
                                     | dss_digest_type()
                                     | ecdsa_digest_type(),
-                        Msg :: binary() | {digest,binary()},
+                        Msg :: iodata() | {digest,iodata()},
                         Signature :: binary(),
                         Key :: rsa_public()
                              | dss_public()
@@ -1562,6 +2151,7 @@ hash_update(State0, Data, _, MaxBytes) ->
     State = notsup_to_error(hash_update_nif(State0, Increment)),
     hash_update(State, Rest, erlang:byte_size(Rest), MaxBytes).
 
+hash_info_nif(_Hash) -> ?nif_stub.
 hash_nif(_Hash, _Data) -> ?nif_stub.
 hash_init_nif(_Hash) -> ?nif_stub.
 hash_update_nif(_State, _Data) -> ?nif_stub.
@@ -1606,28 +2196,13 @@ poly1305_nif(_Key, _Data) -> ?nif_stub.
 
 %% CIPHERS --------------------------------------------------------------------
 
-block_crypt_nif(_Type, _Key, _Ivec, _Text, _IsEncrypt) -> ?nif_stub.
-block_crypt_nif(_Type, _Key, _Text, _IsEncrypt) -> ?nif_stub.
-
-check_des3_key(Key) ->
-    case lists:map(fun erlang:iolist_to_binary/1, Key) of
-        ValidKey = [B1, B2, B3] when byte_size(B1) =:= 8,
-                                     byte_size(B2) =:= 8,
-                                     byte_size(B3) =:= 8 ->
-            ValidKey;
-        _ ->
-            error(badarg)
-   end.
+cipher_info_nif(_Type) -> ?nif_stub.
 
 %%
 %% AES - in Galois/Counter Mode (GCM)
 %%
 %% The default tag length is EVP_GCM_TLS_TAG_LEN(16),
-aead_encrypt(Type=aes_ccm, Key, Ivec, AAD, In) -> aead_encrypt(Type, Key, Ivec, AAD, In, 12);
-aead_encrypt(Type=aes_gcm, Key, Ivec, AAD, In) -> aead_encrypt(Type, Key, Ivec, AAD, In, 16).
-
-aead_encrypt(_Type, _Key, _Ivec, _AAD, _In, _TagLength) -> ?nif_stub.
-aead_decrypt(_Type, _Key, _Ivec, _AAD, _In, _Tag) -> ?nif_stub.
+aead_cipher(_Type, _Key, _Ivec, _AAD, _In, _TagOrTagLength, _EncFlg) -> ?nif_stub.
 
 %%
 %% AES - with 256 bit key in infinite garble extension mode (IGE)
@@ -1635,59 +2210,7 @@ aead_decrypt(_Type, _Key, _Ivec, _AAD, _In, _Tag) -> ?nif_stub.
 
 aes_ige_crypt_nif(_Key, _IVec, _Data, _IsEncrypt) -> ?nif_stub.
 
-
-%% Stream ciphers --------------------------------------------------------------------
-
-stream_crypt(Fun, State, Data, Size, MaxByts, []) when Size =< MaxByts ->
-    Fun(State, Data);
-stream_crypt(Fun, State0, Data, Size, MaxByts, Acc) when Size =< MaxByts ->
-    {State, Cipher} = Fun(State0, Data),
-    {State, list_to_binary(lists:reverse([Cipher | Acc]))};
-stream_crypt(Fun, State0, Data, _, MaxByts, Acc) ->
-    <<Increment:MaxByts/binary, Rest/binary>> = Data,
-    {State, CipherText} = Fun(State0, Increment),
-    stream_crypt(Fun, State, Rest, erlang:byte_size(Rest), MaxByts, [CipherText | Acc]).
-
-do_stream_encrypt({aes_ctr, State0}, Data) ->
-    {State, Cipher} = aes_ctr_stream_encrypt(State0, Data),
-    {{aes_ctr, State}, Cipher};
-do_stream_encrypt({rc4, State0}, Data) ->
-    {State, Cipher} = rc4_encrypt_with_state(State0, Data),
-    {{rc4, State}, Cipher};
-do_stream_encrypt({chacha20, State0}, Data) ->
-    {State, Cipher} = chacha20_stream_encrypt(State0, Data),
-    {{chacha20, State}, Cipher}.
-
-do_stream_decrypt({aes_ctr, State0}, Data) ->
-    {State, Text} = aes_ctr_stream_decrypt(State0, Data),
-    {{aes_ctr, State}, Text};
-do_stream_decrypt({rc4, State0}, Data) ->
-    {State, Text} = rc4_encrypt_with_state(State0, Data),
-    {{rc4, State}, Text};
-do_stream_decrypt({chacha20, State0}, Data) ->
-    {State, Cipher} = chacha20_stream_decrypt(State0, Data),
-    {{chacha20, State}, Cipher}.
-
-
-%%
-%% AES - in counter mode (CTR) with state maintained for multi-call streaming
-%%
-aes_ctr_stream_init(_Key, _IVec) -> ?nif_stub.
-aes_ctr_stream_encrypt(_State, _Data) -> ?nif_stub.
-aes_ctr_stream_decrypt(_State, _Cipher) -> ?nif_stub.
-
-%%
-%% RC4 - symmetric stream cipher
-%%
-rc4_set_key(_Key) -> ?nif_stub.
-rc4_encrypt_with_state(_State, _Data) -> ?nif_stub.
-
-%%
-%% CHACHA20 - stream cipher
-%%
-chacha20_stream_init(_Key, _IVec) -> ?nif_stub.
-chacha20_stream_encrypt(_State, _Data) -> ?nif_stub.
-chacha20_stream_decrypt(_State, _Data) -> ?nif_stub.
+%%%================================================================
 
 %% Secure remote password  -------------------------------------------------------------------
 
@@ -2051,3 +2574,5 @@ check_otp_test_engine(LibDir) ->
                     {error, notexist}
             end
     end.
+
+
diff --git a/lib/crypto/test/Makefile b/lib/crypto/test/Makefile
index e046a25338..988d95a8bc 100644
--- a/lib/crypto/test/Makefile
+++ b/lib/crypto/test/Makefile
@@ -6,7 +6,7 @@ include $(ERL_TOP)/make/$(TARGET)/otp.mk
 # ----------------------------------------------------
 
 MODULES = \
-	blowfish_SUITE \
+	crypto_bench_SUITE \
 	crypto_SUITE \
 	engine_SUITE
 
@@ -77,7 +77,7 @@ release_spec:
 
 release_tests_spec: $(TEST_TARGET)
 	$(INSTALL_DIR) "$(RELSYSDIR)"
-	$(INSTALL_DATA) crypto.spec crypto.cover $(RELTEST_FILES) "$(RELSYSDIR)"
+	$(INSTALL_DATA) crypto.spec crypto_bench.spec crypto.cover $(RELTEST_FILES) "$(RELSYSDIR)"
 	@tar cfh - *_SUITE_data | (cd "$(RELSYSDIR)"; tar xf -)
 	chmod -R u+w "$(RELSYSDIR)"
 
diff --git a/lib/crypto/test/blowfish_SUITE.erl b/lib/crypto/test/blowfish_SUITE.erl
deleted file mode 100644
index a931ebb47e..0000000000
--- a/lib/crypto/test/blowfish_SUITE.erl
+++ /dev/null
@@ -1,300 +0,0 @@
-%%
-%% %CopyrightBegin%
-%%
-%% Copyright Ericsson AB 2009-2018. All Rights Reserved.
-%%
-%% Licensed under the Apache License, Version 2.0 (the "License");
-%% you may not use this file except in compliance with the License.
-%% You may obtain a copy of the License at
-%%
-%%     http://www.apache.org/licenses/LICENSE-2.0
-%%
-%% Unless required by applicable law or agreed to in writing, software
-%% distributed under the License is distributed on an "AS IS" BASIS,
-%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-%% See the License for the specific language governing permissions and
-%% limitations under the License.
-%%
-%% %CopyrightEnd%
-%%
-
-%%
--module(blowfish_SUITE).
-
-%% Note: This directive should only be used in test suites.
--compile(export_all).
-
--include_lib("common_test/include/ct.hrl").
-
--define(TIMEOUT, 120000). % 2 min
-
--define(KEY, to_bin("0123456789ABCDEFF0E1D2C3B4A59687")).
--define(IVEC, to_bin("FEDCBA9876543210")).
-%% "7654321 Now is the time for " (includes trailing '\0')
--define(DATA, to_bin("37363534333231204E6F77206973207468652074696D6520666F722000")).
--define(DATA_PADDED, to_bin("37363534333231204E6F77206973207468652074696D6520666F722000000000")).
-
-%% Test server callback functions
-%%--------------------------------------------------------------------
-%% Function: init_per_suite(Config) -> Config
-%% Config - [tuple()]
-%%   A list of key/value pairs, holding the test case configuration.
-%% Description: Initialization before the whole suite
-%%
-%% Note: This function is free to add any key/value pairs to the Config
-%% variable, but should NOT alter/remove any existing entries.
-%%--------------------------------------------------------------------
-init_per_suite(Config) ->
-    case catch crypto:start() of
-	ok ->
-            catch ct:comment("~s",[element(3,hd(crypto:info_lib()))]),
-            catch ct:log("crypto:info_lib() -> ~p~n"
-                         "crypto:supports() -> ~p~n"
-                         "crypto:version()  -> ~p~n"
-                        ,[crypto:info_lib(), crypto:supports(), crypto:version()]),
-	    Config;
-	_Else ->
-	    {skip,"Could not start crypto!"}
-    end.
-
-%%--------------------------------------------------------------------
-%% Function: end_per_suite(Config) -> _
-%% Config - [tuple()]
-%%   A list of key/value pairs, holding the test case configuration.
-%% Description: Cleanup after the whole suite
-%%--------------------------------------------------------------------
-end_per_suite(_Config) ->
-    crypto:stop().
-
-%%--------------------------------------------------------------------
-%% Function: init_per_testcase(TestCase, Config) -> Config
-%% Case - atom()
-%%   Name of the test case that is about to be run.
-%% Config - [tuple()]
-%%   A list of key/value pairs, holding the test case configuration.
-%%
-%% Description: Initialization before each test case
-%%
-%% Note: This function is free to add any key/value pairs to the Config
-%% variable, but should NOT alter/remove any existing entries.
-%% Description: Initialization before each test case
-%%--------------------------------------------------------------------
-init_per_testcase(_TestCase, Config0) ->
-    Config = lists:keydelete(watchdog, 1, Config0),
-    Dog = test_server:timetrap(?TIMEOUT),
-    [{watchdog, Dog} | Config].
-
-%%--------------------------------------------------------------------
-%% Function: end_per_testcase(TestCase, Config) -> _
-%% Case - atom()
-%%   Name of the test case that is about to be run.
-%% Config - [tuple()]
-%%   A list of key/value pairs, holding the test case configuration.
-%% Description: Cleanup after each test case
-%%--------------------------------------------------------------------
-end_per_testcase(_TestCase, Config) ->
-    Dog = ?config(watchdog, Config),
-    case Dog of
-	undefined ->
-	    ok;
-	_ ->
-	    test_server:timetrap_cancel(Dog)
-    end.
-
-%%--------------------------------------------------------------------
-%% Function: all(Clause) -> TestCases
-%% Clause - atom() - suite | doc
-%% TestCases - [Case]
-%% Case - atom()
-%%   Name of a test case.
-%% Description: Returns a list of all test cases in this test suite
-%%--------------------------------------------------------------------
-suite() -> [{ct_hooks,[ts_install_cth]}].
-
-all() -> 
-[{group, fips},
- {group, non_fips}].
-
-groups() -> 
-    [{fips,     [], [no_ecb, no_cbc, no_cfb64, no_ofb64]},
-     {non_fips, [], [ecb, cbc, cfb64, ofb64]}].
-
-init_per_group(fips, Config) ->
-    case crypto:info_fips() of
-        enabled ->
-            Config;
-        not_enabled ->
-            case crypto:enable_fips_mode(true) of
-		true ->
-		    enabled = crypto:info_fips(),
-		    Config;
-		false ->
-		    {skip, "Failed to enable FIPS mode"}
-	    end;
-        not_supported ->
-            {skip, "FIPS mode not supported"}
-    end;
-init_per_group(non_fips, Config) ->
-    case crypto:info_fips() of
-        enabled ->
-            true = crypto:enable_fips_mode(false),
-            not_enabled = crypto:info_fips(),
-            Config;
-        _NotEnabled ->
-            Config
-    end;
-init_per_group(_GroupName, Config) ->
-	Config.
-
-end_per_group(_GroupName, Config) ->
-	Config.
-
-
-%% Test cases start here.
-%%--------------------------------------------------------------------
-
-ecb_test(KeyBytes, ClearBytes, CipherBytes) ->
-    {Key, Clear, Cipher} =
-	{to_bin(KeyBytes), to_bin(ClearBytes), to_bin(CipherBytes)},
-    ?line m(crypto:block_encrypt(blowfish_ecb, Key, Clear), Cipher),
-    true.
-
-ecb(doc) ->
-    "Test that ECB mode is OK";
-ecb(suite) ->
-    [];
-ecb(Config) when is_list(Config) ->
-	true = ecb_test("0000000000000000", "0000000000000000", "4EF997456198DD78"),
-	true = ecb_test("FFFFFFFFFFFFFFFF", "FFFFFFFFFFFFFFFF", "51866FD5B85ECB8A"),
-	true = ecb_test("3000000000000000", "1000000000000001", "7D856F9A613063F2"),
-	true = ecb_test("1111111111111111", "1111111111111111", "2466DD878B963C9D"),
-	true = ecb_test("0123456789ABCDEF", "1111111111111111", "61F9C3802281B096"),
-	true = ecb_test("1111111111111111", "0123456789ABCDEF", "7D0CC630AFDA1EC7"),
-	true = ecb_test("0000000000000000", "0000000000000000", "4EF997456198DD78"),
-	true = ecb_test("FEDCBA9876543210", "0123456789ABCDEF", "0ACEAB0FC6A0A28D"),
-	true = ecb_test("7CA110454A1A6E57", "01A1D6D039776742", "59C68245EB05282B"),
-	true = ecb_test("0131D9619DC1376E", "5CD54CA83DEF57DA", "B1B8CC0B250F09A0"),
-	true = ecb_test("07A1133E4A0B2686", "0248D43806F67172", "1730E5778BEA1DA4"),
-	true = ecb_test("3849674C2602319E", "51454B582DDF440A", "A25E7856CF2651EB"),
-	true = ecb_test("04B915BA43FEB5B6", "42FD443059577FA2", "353882B109CE8F1A"),
-	true = ecb_test("0113B970FD34F2CE", "059B5E0851CF143A", "48F4D0884C379918"),
-	true = ecb_test("0170F175468FB5E6", "0756D8E0774761D2", "432193B78951FC98"),
-	true = ecb_test("43297FAD38E373FE", "762514B829BF486A", "13F04154D69D1AE5"),
-	true = ecb_test("07A7137045DA2A16", "3BDD119049372802", "2EEDDA93FFD39C79"),
-	true = ecb_test("04689104C2FD3B2F", "26955F6835AF609A", "D887E0393C2DA6E3"),
-	true = ecb_test("37D06BB516CB7546", "164D5E404F275232", "5F99D04F5B163969"),
-	true = ecb_test("1F08260D1AC2465E", "6B056E18759F5CCA", "4A057A3B24D3977B"),
-	true = ecb_test("584023641ABA6176", "004BD6EF09176062", "452031C1E4FADA8E"),
-	true = ecb_test("025816164629B007", "480D39006EE762F2", "7555AE39F59B87BD"),
-	true = ecb_test("49793EBC79B3258F", "437540C8698F3CFA", "53C55F9CB49FC019"),
-	true = ecb_test("4FB05E1515AB73A7", "072D43A077075292", "7A8E7BFA937E89A3"),
-	true = ecb_test("49E95D6D4CA229BF", "02FE55778117F12A", "CF9C5D7A4986ADB5"),
-	true = ecb_test("018310DC409B26D6", "1D9D5C5018F728C2", "D1ABB290658BC778"),
-	true = ecb_test("1C587F1C13924FEF", "305532286D6F295A", "55CB3774D13EF201"),
-	true = ecb_test("0101010101010101", "0123456789ABCDEF", "FA34EC4847B268B2"),
-	true = ecb_test("1F1F1F1F0E0E0E0E", "0123456789ABCDEF", "A790795108EA3CAE"),
-	true = ecb_test("E0FEE0FEF1FEF1FE", "0123456789ABCDEF", "C39E072D9FAC631D"),
-	true = ecb_test("0000000000000000", "FFFFFFFFFFFFFFFF", "014933E0CDAFF6E4"),
-	true = ecb_test("FFFFFFFFFFFFFFFF", "0000000000000000", "F21E9A77B71C49BC"),
-	true = ecb_test("0123456789ABCDEF", "0000000000000000", "245946885754369A"),
-	true = ecb_test("FEDCBA9876543210", "FFFFFFFFFFFFFFFF", "6B5C5A9C5D9E0A5A"),
-	ok.
-
-cbc(doc) ->
-    "Test that CBC mode is OK";
-cbc(suite) ->
-    [];
-cbc(Config) when is_list(Config) ->
-	true = crypto:block_encrypt(blowfish_cbc, ?KEY, ?IVEC, ?DATA_PADDED) =:=
-		to_bin("6B77B4D63006DEE605B156E27403979358DEB9E7154616D959F1652BD5FF92CC"),
-	ok.
-
-cfb64(doc) ->
-    "Test that CFB64 mode is OK";
-cfb64(suite) ->
-    [];
-cfb64(Config) when is_list(Config) ->
-	true = crypto:block_encrypt(blowfish_cfb64, ?KEY, ?IVEC, ?DATA) =:=
-		to_bin("E73214A2822139CAF26ECF6D2EB9E76E3DA3DE04D1517200519D57A6C3"),
-	ok.
-
-ofb64(doc) ->
-    "Test that OFB64 mode is OK";
-ofb64(suite) ->
-    [];
-ofb64(Config) when is_list(Config) ->
-	true = crypto:block_encrypt(blowfish_ofb64, ?KEY, ?IVEC, ?DATA) =:=
-		to_bin("E73214A2822139CA62B343CC5B65587310DD908D0C241B2263C2CF80DA"),
-	ok.
-
-no_ecb(doc) ->
-    "Test that ECB mode is disabled";
-no_ecb(suite) ->
-    [];
-no_ecb(Config) when is_list(Config) ->
-	notsup(fun crypto:block_encrypt/3,
-               [blowfish_ecb,
-		to_bin("0000000000000000"),
-                to_bin("FFFFFFFFFFFFFFFF")]).
-
-no_cbc(doc) ->
-    "Test that CBC mode is disabled";
-no_cbc(suite) ->
-    [];
-no_cbc(Config) when is_list(Config) ->
-	notsup(fun crypto:block_encrypt/4,
-               [blowfish_cbc, ?KEY, ?IVEC, ?DATA_PADDED]).
-
-no_cfb64(doc) ->
-    "Test that CFB64 mode is disabled";
-no_cfb64(suite) ->
-    [];
-no_cfb64(Config) when is_list(Config) ->
-	notsup(fun crypto:block_encrypt/4,
-               [blowfish_cfb64, ?KEY, ?IVEC, ?DATA]),
-	ok.
-
-no_ofb64(doc) ->
-    "Test that OFB64 mode is disabled";
-no_ofb64(suite) ->
-    [];
-no_ofb64(Config) when is_list(Config) ->
-	notsup(fun crypto:block_encrypt/4,
-               [blowfish_ofb64, ?KEY, ?IVEC, ?DATA]).
-
-%% Helper functions
-
-%% Assert function fails with notsup error
-notsup(Fun, Args) ->
-    ok = try
-             {error, {return, apply(Fun, Args)}}
-         catch
-             error:notsup ->
-                 ok;
-             Class:Error ->
-                 {error, {Class, Error}}
-         end.
-
-
-%% Convert a hexadecimal string to a binary.
--spec(to_bin(L::string()) -> binary()).
-to_bin(L) ->
-    to_bin(L, []).
-
-%% @spec dehex(char()) -> integer()
-%% @doc Convert a hex digit to its integer value.
--spec(dehex(char()) -> integer()).
-dehex(C) when C >= $0, C =< $9 ->
-    C - $0;
-dehex(C) when C >= $a, C =< $f ->
-    C - $a + 10;
-dehex(C) when C >= $A, C =< $F ->
-    C - $A + 10.
-
--spec(to_bin(L::string(), list()) -> binary()).
-to_bin([], Acc) ->
-    iolist_to_binary(lists:reverse(Acc));
-to_bin([C1, C2 | Rest], Acc) ->
-    to_bin(Rest, [(dehex(C1) bsl 4) bor dehex(C2) | Acc]).
-
-m(X,X) -> ok.
diff --git a/lib/crypto/test/crypto.spec b/lib/crypto/test/crypto.spec
index cc09970cb3..4a95275687 100644
--- a/lib/crypto/test/crypto.spec
+++ b/lib/crypto/test/crypto.spec
@@ -1 +1,6 @@
 {suites,"../crypto_test",all}.
+
+{skip_suites, "../crypto_test", [crypto_bench_SUITE
+	],
+ "Benchmarks run separately"}.
+
diff --git a/lib/crypto/test/crypto_SUITE.erl b/lib/crypto/test/crypto_SUITE.erl
index 6c6188f775..6a2727a622 100644
--- a/lib/crypto/test/crypto_SUITE.erl
+++ b/lib/crypto/test/crypto_SUITE.erl
@@ -9,7 +9,7 @@
 %%
 %%     http://www.apache.org/licenses/LICENSE-2.0
 %%
-%% Unless required by applicable law or agreed to in writing, software
+
 %% distributed under the License is distributed on an "AS IS" BASIS,
 %% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 %% See the License for the specific language governing permissions and
@@ -40,55 +40,103 @@ all() ->
      rand_uniform,
      rand_threads,
      rand_plugin,
-     rand_plugin_s
+     rand_plugin_s,
+     cipher_info,
+     hash_info
     ].
 
+-define(NEW_CIPHER_TYPE_SCHEMA,
+        {group, des_ede3_cbc},
+        {group, des_ede3_cfb},
+        {group, aes_128_cbc},
+        {group, aes_192_cbc},
+        {group, aes_256_cbc},
+        {group, aes_128_ctr},
+        {group, aes_192_ctr},
+        {group, aes_256_ctr},
+        {group, aes_128_ccm},
+        {group, aes_192_ccm},
+        {group, aes_256_ccm},
+        {group, aes_128_ecb},
+        {group, aes_192_ecb},
+        {group, aes_256_ecb},
+        {group, aes_128_gcm},
+        {group, aes_192_gcm},
+        {group, aes_256_gcm},
+        {group, des_ede3_cbc},
+        {group, des_ede3_cfb}
+       ).
+        
+-define(RETIRED_TYPE_ALIASES,
+        {group, aes_cbc},
+        {group, aes_cbc128},
+        {group, aes_cbc256},
+        {group, aes_ccm},
+        {group, aes_ctr},
+        {group, aes_gcm},
+        {group, aes_ecb},
+        {group, des3_cfb},
+        {group, des3_cbc},
+        {group, des3_cbf},
+        {group, des_ede3}
+       ).
+
 groups() ->
-    [{non_fips, [], [{group, md4},
+    [{non_fips, [], [
+                     {group, blake2b},
+                     {group, blake2s},
+                     {group, dss},
+                     {group, ecdsa},
+                     {group, ed25519},
+                     {group, ed448},
+                     {group, rsa},
+
+                     {group, md4},
                      {group, md5},
                      {group, ripemd160},
-                     {group, sha},
                      {group, sha224},
                      {group, sha256},
                      {group, sha384},
-                     {group, sha512},
                      {group, sha3_224},
                      {group, sha3_256},
                      {group, sha3_384},
                      {group, sha3_512},
-                     {group, rsa},
-                     {group, dss},
-                     {group, ecdsa},
-                     {group, ed25519},
-                     {group, ed448},
+                     {group, sha512},
+                     {group, sha},
+                     {group, poly1305},
+
                      {group, dh},
                      {group, ecdh},
                      {group, srp},
-                     {group, des_cbc},
-                     {group, des_cfb},
-                     {group, des3_cbc},
-                     {group, des3_cbf},
-		     {group, des3_cfb},
-                     {group, des_ede3},
+
+		     {group, chacha20_poly1305},
+		     {group, chacha20},
                      {group, blowfish_cbc},
-                     {group, blowfish_ecb},
                      {group, blowfish_cfb64},
+                     {group, blowfish_ecb},
                      {group, blowfish_ofb64},
-                     {group, aes_cbc128},
-                     {group, aes_cfb8},
+
                      {group, aes_cfb128},
-                     {group, aes_cbc256},
+                     {group, aes_cfb8},
                      {group, aes_ige256},
+                     {group, des_cbc},
+                     {group, des_cfb},
                      {group, rc2_cbc},
                      {group, rc4},
-                     {group, aes_ctr},
-		     {group, aes_ccm},
-		     {group, aes_gcm},
-		     {group, chacha20_poly1305},
-		     {group, chacha20},
-                     {group, poly1305},
-		     {group, aes_cbc}]},
-     {fips, [], [{group, no_md4},
+
+                     ?NEW_CIPHER_TYPE_SCHEMA,
+                     ?RETIRED_TYPE_ALIASES
+                    ]},
+     {fips, [], [
+                 {group, no_blake2b},
+                 {group, no_blake2s},
+                 {group, dss},
+                 {group, ecdsa},
+                 {group, no_ed25519},
+                 {group, no_ed448},
+                 {group, rsa},
+
+                 {group, no_md4},
                  {group, no_md5},
                  {group, no_ripemd160},
                  {group, sha},
@@ -96,109 +144,142 @@ groups() ->
                  {group, sha256},
                  {group, sha384},
                  {group, sha512},
-                 {group, rsa},
-                 {group, dss},
-                 {group, ecdsa},
+                 {group, no_poly1305},
+
                  {group, dh},
                  {group, ecdh},
                  {group, no_srp},
-                 {group, no_des_cbc},
-                 {group, no_des_cfb},
-                 {group, des3_cbc},
-                 {group, des3_cbf},
-		 {group, des3_cfb},
-                 {group, des_ede3},
+
+		 {group, no_chacha20_poly1305},
+		 {group, no_chacha20},
                  {group, no_blowfish_cbc},
-                 {group, no_blowfish_ecb},
                  {group, no_blowfish_cfb64},
+                 {group, no_blowfish_ecb},
                  {group, no_blowfish_ofb64},
-                 {group, aes_cbc128},
-                 {group, aes_cfb8},
-                 {group, aes_cfb128},
-                 {group, aes_cbc256},
+
+                 {group, no_aes_cfb128},
+                 {group, no_aes_cfb8},
                  {group, no_aes_ige256},
+                 {group, no_des_cbc},
+                 {group, no_des_cfb},
                  {group, no_rc2_cbc},
                  {group, no_rc4},
-                 {group, aes_ctr},
-		 {group, aes_ccm},
-		 {group, aes_gcm},
-		 {group, no_chacha20_poly1305},
-		 {group, no_chacha20},
-		 {group, aes_cbc}]},
-     {md4, [], [hash]},
-     {md5, [], [hash, hmac]},
-     {ripemd160, [], [hash]},
-     {sha, [], [hash, hmac]},
-     {sha224, [], [hash, hmac]},
-     {sha256, [], [hash, hmac]},
-     {sha384, [], [hash, hmac]},
-     {sha512, [], [hash, hmac]},
-     {sha3_224, [], [hash, hmac]},
-     {sha3_256, [], [hash, hmac]},
-     {sha3_384, [], [hash, hmac]},
-     {sha3_512, [], [hash, hmac]},
-     {rsa, [], [sign_verify,
-                public_encrypt,
-                private_encrypt,
-                generate
-               ]},
-     {dss, [], [sign_verify
-                %% Does not work yet:  ,public_encrypt, private_encrypt
-               ]},
-     {ecdsa, [], [sign_verify
-                %% Does not work yet:  ,public_encrypt, private_encrypt
-                 ]},
-     {ed25519, [], [sign_verify
-                %% Does not work yet:  ,public_encrypt, private_encrypt
-                 ]},
-     {ed448, [], [sign_verify
-                %% Does not work yet:  ,public_encrypt, private_encrypt
-                 ]},
-     {dh, [], [generate_compute,
-               compute_bug]},
-     {ecdh, [], [generate_all_supported, compute, generate]},
-     {srp, [], [generate_compute]},
-     {des_cbc, [], [block]},
-     {des_cfb, [], [block]},
-     {des3_cbc,[], [block]},
-     {des_ede3,[], [block]},
-     {des3_cbf,[], [block]},
-     {des3_cfb,[], [block]},
-     {rc2_cbc,[], [block]},
-     {aes_cbc128,[], [block, cmac]},
-     {aes_cfb8,[], [block]},
-     {aes_cfb128,[], [block]},
-     {aes_cbc256,[], [block, cmac]},
-     {aes_ecb,[], [block]},
-     {aes_ige256,[], [block]},
-     {blowfish_cbc, [], [block]},
-     {blowfish_ecb, [], [block]},
-     {blowfish_cfb64, [], [block]},
-     {blowfish_ofb64,[], [block]},
-     {rc4, [], [stream]},
-     {aes_ctr, [], [stream]},
-     {aes_ccm, [], [aead]},
-     {aes_gcm, [], [aead]},
-     {chacha20_poly1305, [], [aead]},
-     {chacha20, [], [stream]},
-     {poly1305, [], [poly1305]},
-     {aes_cbc, [], [block]},
-     {no_md4, [], [no_support, no_hash]},
-     {no_md5, [], [no_support, no_hash, no_hmac]},
-     {no_ripemd160, [], [no_support, no_hash]},
-     {no_srp, [], [no_support, no_generate_compute]},
-     {no_des_cbc, [], [no_support, no_block]},
-     {no_des_cfb, [], [no_support, no_block]},
-     {no_blowfish_cbc, [], [no_support, no_block]},
-     {no_blowfish_ecb, [], [no_support, no_block]},
-     {no_blowfish_cfb64, [], [no_support, no_block]},
-     {no_blowfish_ofb64, [], [no_support, no_block]},
-     {no_aes_ige256, [], [no_support, no_block]},
+
+                 ?NEW_CIPHER_TYPE_SCHEMA,
+                 ?RETIRED_TYPE_ALIASES
+                ]},
+
+     {md4,                  [], [hash]},
+     {md5,                  [], [hash, hmac]},
+     {ripemd160,            [], [hash]},
+     {sha,                  [], [hash, hmac]},
+     {sha224,               [], [hash, hmac]},
+     {sha256,               [], [hash, hmac]},
+     {sha384,               [], [hash, hmac]},
+     {sha512,               [], [hash, hmac]},
+     {sha3_224,             [], [hash, hmac]},
+     {sha3_256,             [], [hash, hmac]},
+     {sha3_384,             [], [hash, hmac]},
+     {sha3_512,             [], [hash, hmac]},
+     {blake2b,              [], [hash, hmac]},
+     {blake2s,              [], [hash, hmac]},
+     {no_blake2b,           [], [no_hash, no_hmac]},
+     {no_blake2s,           [], [no_hash, no_hmac]},
+     {rsa,                  [], [sign_verify,
+                                 public_encrypt,
+                                 private_encrypt,
+                                 generate
+                                ]},
+     {dss,                  [], [sign_verify
+                                 %% Does not work yet:  ,public_encrypt, private_encrypt
+                                ]},
+     {ecdsa,                [], [sign_verify
+                                 %% Does not work yet:  ,public_encrypt, private_encrypt
+                                ]},
+     {ed25519,              [], [sign_verify
+                                 %% Does not work yet:  ,public_encrypt, private_encrypt
+                              ]},
+     {ed448,                [], [sign_verify
+                                 %% Does not work yet:  ,public_encrypt, private_encrypt
+                                ]},
+     {dh,                   [], [generate_compute, compute_bug]},
+     {ecdh,                 [], [use_all_elliptic_curves, compute, generate]},
+     {srp,                  [], [generate_compute]},
+     {des_cbc,              [], [block, api_ng, api_ng_one_shot, api_ng_tls]},
+     {des_cfb,              [], [block, api_ng, api_ng_one_shot, api_ng_tls]},
+     {des_ede3_cbc,         [], [block, api_ng, api_ng_one_shot, api_ng_tls]},
+     {des_ede3_cfb,         [], [block, api_ng, api_ng_one_shot, api_ng_tls]},
+     {rc2_cbc,              [], [block, api_ng, api_ng_one_shot, api_ng_tls]},
+     {aes_cfb8,             [], [block, api_ng, api_ng_one_shot, api_ng_tls]},
+     {no_aes_cfb8,          [], [no_support, no_block]},
+     {aes_cfb128,           [], [block, api_ng, api_ng_one_shot, api_ng_tls]},
+     {no_aes_cfb128,        [], [no_support, no_block]},
+     {aes_ige256,           [], [block]},
+     {no_aes_ige256,        [], [no_support, no_block]},
+     {blowfish_cbc,         [], [block, api_ng, api_ng_one_shot, api_ng_tls]},
+     {blowfish_ecb,         [], [block, api_ng, api_ng_one_shot]},
+     {blowfish_cfb64,       [], [block, api_ng, api_ng_one_shot, api_ng_tls]},
+     {blowfish_ofb64,       [], [block, api_ng, api_ng_one_shot, api_ng_tls]},
+     {rc4,                  [], [stream, api_ng, api_ng_one_shot, api_ng_tls]},
+     {aes_ctr,              [], [stream]},
+     {chacha20_poly1305,    [], [aead]},
+     {chacha20,             [], [stream, api_ng, api_ng_one_shot, api_ng_tls]},
+     {poly1305,             [], [poly1305]},
+     {no_poly1305,          [], [no_poly1305]},
+     {no_aes_cfb128,        [], [no_support, no_block]},
+     {no_md4,               [], [no_support, no_hash]},
+     {no_md5,               [], [no_support, no_hash, no_hmac]},
+     {no_ed25519,           [], [no_support, no_sign_verify
+                                 %% Does not work yet:  ,public_encrypt, private_encrypt
+                                ]},
+     {no_ed448,             [], [no_support, no_sign_verify
+                                 %% Does not work yet:  ,public_encrypt, private_encrypt
+                                ]},
+     {no_ripemd160,         [], [no_support, no_hash]},
+     {no_srp,               [], [no_support, no_generate_compute]},
+     {no_des_cbc,           [], [no_support, no_block]},
+     {no_des_cfb,           [], [no_support, no_block]},
+     {no_blowfish_cbc,      [], [no_support, no_block]},
+     {no_blowfish_ecb,      [], [no_support, no_block]},
+     {no_blowfish_cfb64,    [], [no_support, no_block]},
+     {no_blowfish_ofb64,    [], [no_support, no_block]},
+     {no_aes_ige256,        [], [no_support, no_block]},
      {no_chacha20_poly1305, [], [no_support, no_aead]},
-     {no_chacha20, [], [no_support, no_stream_ivec]},
-     {no_rc2_cbc, [], [no_support, no_block]},
-     {no_rc4, [], [no_support, no_stream]},
-     {api_errors, [], [api_errors_ecdh]}
+     {no_chacha20,          [], [no_support, no_stream_ivec]},
+     {no_rc2_cbc,           [], [no_support, no_block]},
+     {no_rc4,               [], [no_support, no_stream]},
+     {api_errors,           [], [api_errors_ecdh]},
+
+     %% New cipher nameing schema
+     {des_ede3_cbc, [], [api_ng, api_ng_one_shot, api_ng_tls]},
+     {des_ede3_cfb, [], [api_ng, api_ng_one_shot, api_ng_tls]},
+     {aes_128_cbc,  [], [api_ng, api_ng_one_shot, api_ng_tls]},
+     {aes_192_cbc,  [], [api_ng, api_ng_one_shot, api_ng_tls]},
+     {aes_256_cbc,  [], [api_ng, api_ng_one_shot, api_ng_tls]},
+     {aes_128_ctr,  [], [api_ng, api_ng_one_shot, api_ng_tls]},
+     {aes_192_ctr,  [], [api_ng, api_ng_one_shot, api_ng_tls]},
+     {aes_256_ctr,  [], [api_ng, api_ng_one_shot, api_ng_tls]},
+     {aes_128_ccm,  [], [aead]},
+     {aes_192_ccm,  [], [aead]},
+     {aes_256_ccm,  [], [aead]},
+     {aes_128_ecb,  [], [api_ng, api_ng_one_shot]},
+     {aes_192_ecb,  [], [api_ng, api_ng_one_shot]},
+     {aes_256_ecb,  [], [api_ng, api_ng_one_shot]},
+     {aes_128_gcm,  [], [aead]},
+     {aes_192_gcm,  [], [aead]},
+     {aes_256_gcm,  [], [aead]},
+
+     %% Retired aliases
+     {aes_cbc,    [], [block]},
+     {aes_cbc128, [], [block]},
+     {aes_cbc256, [], [block]},
+     {aes_ccm,    [], [aead]},
+     {aes_ecb,    [], [block]},
+     {aes_gcm,    [], [aead]},
+     {des3_cbc,             [], [block]},
+     {des_ede3,             [], [block]},
+     {des3_cbf,             [], [block]},
+     {des3_cfb,             [], [block]}
     ].
 
 %%-------------------------------------------------------------------
@@ -251,7 +332,7 @@ init_per_group(fips, Config) ->
 		    enabled = crypto:info_fips(),
 		    FIPSConfig;
 		false ->
-		    {skip, "Failed to enable FIPS mode"}
+		    {fail, "Failed to enable FIPS mode"}
 	    end;
         not_supported ->
             {skip, "FIPS mode not supported"}
@@ -291,12 +372,11 @@ end_per_group(_GroupName, Config) ->
 init_per_testcase(info, Config) ->
     Config;
 init_per_testcase(cmac, Config) ->
-    case crypto:info_lib() of
-        [{<<"OpenSSL">>,LibVer,_}] when is_integer(LibVer), LibVer > 16#10001000 ->
+    case is_supported(cmac) of
+        true ->
             Config;
-        _Else ->
-            % The CMAC functionality was introduced in OpenSSL 1.0.1
-            {skip, "OpenSSL is too old"}
+        false ->
+            {skip, "CMAC is not supported"}
     end;
 init_per_testcase(generate, Config) ->
     case proplists:get_value(type, Config) of
@@ -396,23 +476,19 @@ poly1305(Config) ->
       end, proplists:get_value(poly1305, Config)).
 
 %%--------------------------------------------------------------------
+no_poly1305() ->
+    [{doc, "Test disabled poly1305 function"}].
+no_poly1305(Config) ->
+    Key = <<133,214,190,120,87,85,109,51,127,68,82,254,66,213,6,168,1,
+            3,128,138,251,13,178,253,74,191,246,175,65,73,245,27>>,
+    Txt = <<"Cryptographic Forum Research Group">>,
+    notsup(fun crypto:poly1305/2, [Key,Txt]).
+
+%%--------------------------------------------------------------------
 block() ->
      [{doc, "Test block ciphers"}].
 block(Config) when is_list(Config) ->
-    Fips = proplists:get_bool(fips, Config),
-    Type = ?config(type, Config),
-    %% See comment about EVP_CIPHER_CTX_set_key_length in
-    %% block_crypt_nif in crypto.c.
-    case {Fips, Type} of
-	{true, aes_cfb8} ->
-	    throw({skip, "Cannot test aes_cfb8 in FIPS mode because of key length issue"});
-	{true, aes_cfb128} ->
-	    throw({skip, "Cannot test aes_cfb128 in FIPS mode because of key length issue"});
-	_ ->
-	    ok
-    end,
-
-    Blocks = lazy_eval(proplists:get_value(block, Config)),
+    [_|_] = Blocks = lazy_eval(proplists:get_value(cipher, Config)),
     lists:foreach(fun block_cipher/1, Blocks),
     lists:foreach(fun block_cipher/1, block_iolistify(Blocks)),
     lists:foreach(fun block_cipher_increment/1, block_iolistify(Blocks)).
@@ -421,7 +497,7 @@ block(Config) when is_list(Config) ->
 no_block() ->
      [{doc, "Test disabled block ciphers"}].
 no_block(Config) when is_list(Config) ->
-    Blocks = lazy_eval(proplists:get_value(block, Config)),
+    [_|_] = Blocks = lazy_eval(proplists:get_value(cipher, Config)),
     Args = case Blocks of
 	       [{_Type, _Key, _PlainText} = A | _] ->
 		   tuple_to_list(A);
@@ -434,11 +510,157 @@ no_block(Config) when is_list(Config) ->
     notsup(fun crypto:block_encrypt/N, Args),
     notsup(fun crypto:block_decrypt/N, Args).
 %%--------------------------------------------------------------------
+api_ng() ->
+     [{doc, "Test new api"}].
+
+api_ng(Config) when is_list(Config) ->
+    [_|_] = Ciphers = lazy_eval(proplists:get_value(cipher, Config, [])),
+    lists:foreach(fun api_ng_cipher_increment/1, Ciphers).
+
+api_ng_cipher_increment({Type, Key, PlainTexts}=_X) ->
+    ct:log("~p",[_X]),
+    api_ng_cipher_increment({Type, Key, <<>>, PlainTexts});
+
+api_ng_cipher_increment({Type, Key, IV, PlainTexts}=_X) ->
+    ct:log("~p",[_X]),
+    api_ng_cipher_increment({Type, Key, IV, PlainTexts, undefined});
+
+api_ng_cipher_increment({Type, Key, IV, PlainText0, ExpectedEncText}=_X) ->
+    ct:log("~p",[_X]),
+    PlainTexts = iolistify(PlainText0),
+    RefEnc = crypto:crypto_init(Type, Key, IV, true),
+    RefDec = crypto:crypto_init(Type, Key, IV, false),
+    EncTexts = api_ng_cipher_increment_loop(RefEnc, PlainTexts),
+    Enc = iolist_to_binary(EncTexts),
+    case ExpectedEncText of
+        undefined ->
+            ok;
+        Enc ->
+            ok;
+        _ ->
+            ct:log("encode~nIn: ~p~nExpected: ~p~nEnc: ~p~n", [{Type,Key,IV,PlainTexts}, ExpectedEncText, Enc]),
+            ct:fail("api_ng_cipher_increment (encode)",[])
+    end,
+    Plain = iolist_to_binary(PlainTexts),
+    case iolist_to_binary(api_ng_cipher_increment_loop(RefDec, EncTexts)) of
+        Plain ->
+            ok;
+        OtherPT ->
+            ct:log("decode~nIn: ~p~nExpected: ~p~nDec: ~p~n", [{Type,Key,IV,EncTexts}, Plain, OtherPT]),
+            ct:fail("api_ng_cipher_increment (encode)",[])
+    end.
+
+
+api_ng_cipher_increment_loop(Ref, InTexts) ->
+    lists:map(fun(Txt) ->
+                      try crypto:crypto_update(Ref, Txt)
+                      of
+                          Bin when is_binary(Bin) ->
+                              Bin
+                      catch
+                          error:Error ->
+                              ct:pal("Txt = ~p",[Txt]),
+                              ct:fail("~p",[Error])
+                      end
+              end, InTexts).
+
+%%--------------------------------------------------------------------
+api_ng_one_shot() ->
+     [{doc, "Test new api"}].
+
+api_ng_one_shot(Config) when is_list(Config) ->
+    [_|_] = Ciphers = lazy_eval(proplists:get_value(cipher, Config, [])),
+    lists:foreach(fun do_api_ng_one_shot/1, Ciphers).
+
+do_api_ng_one_shot({Type, Key, PlainTexts}=_X) ->
+    ct:log("~p",[_X]),
+    do_api_ng_one_shot({Type, Key, <<>>, PlainTexts});
+
+do_api_ng_one_shot({Type, Key, IV, PlainTexts}=_X) ->
+    ct:log("~p",[_X]),
+    do_api_ng_one_shot({Type, Key, IV, PlainTexts, undefined});
+
+do_api_ng_one_shot({Type, Key, IV, PlainText0, ExpectedEncText}=_X) ->
+    ct:log("~p",[_X]),
+    PlainText = iolist_to_binary(lazy_eval(PlainText0)),
+    EncTxt = crypto:crypto_one_time(Type, Key, IV, PlainText, true),
+    case ExpectedEncText of
+        undefined ->
+            ok;
+        EncTxt ->
+            ok;
+        _ ->
+            ct:log("encode~nIn: ~p~nExpected: ~p~nEnc: ~p~n", [{Type,Key,IV,PlainText}, ExpectedEncText, EncTxt]),
+            ct:fail("api_ng_one_time (encode)",[])
+    end,
+    case crypto:crypto_one_time(Type, Key, IV, EncTxt, false) of
+        PlainText ->
+            ok;
+        OtherPT ->
+            ct:log("decode~nIn: ~p~nExpected: ~p~nDec: ~p~n", [{Type,Key,IV,EncTxt}, PlainText, OtherPT]),
+            ct:fail("api_ng_one_time (decode)",[])
+    end.
+
+%%--------------------------------------------------------------------
+api_ng_tls() ->
+     [{doc, "Test special tls api"}].
+
+api_ng_tls(Config) when is_list(Config) ->
+    [_|_] = Ciphers = lazy_eval(proplists:get_value(cipher, Config, [])),
+    lists:foreach(fun do_api_ng_tls/1, Ciphers).
+
+
+do_api_ng_tls({Type, Key, PlainTexts}=_X) ->
+    ct:log("~p",[_X]),
+    do_api_ng_tls({Type, Key, <<>>, PlainTexts});
+
+do_api_ng_tls({Type, Key, IV, PlainTexts}=_X) ->
+    ct:log("~p",[_X]),
+    do_api_ng_tls({Type, Key, IV, PlainTexts, undefined});
+
+do_api_ng_tls({Type, Key, IV, PlainText0, ExpectedEncText}=_X) ->
+    ct:log("~p",[_X]),
+    PlainText = iolist_to_binary(lazy_eval(PlainText0)),
+    Renc = crypto:crypto_init_dyn_iv(Type, Key, true),
+    Rdec = crypto:crypto_init_dyn_iv(Type, Key, false),
+    EncTxt = crypto:crypto_update_dyn_iv(Renc, PlainText, IV),
+    case ExpectedEncText of
+        undefined ->
+            ok;
+        EncTxt ->
+            %% Now check that the state is NOT updated:
+            case crypto:crypto_update_dyn_iv(Renc, PlainText, IV) of
+                EncTxt ->
+                    ok;
+                EncTxt2 ->
+                    ct:log("2nd encode~nIn: ~p~nExpected: ~p~nEnc: ~p~n", [{Type,Key,IV,PlainText}, EncTxt, EncTxt2]),
+                    ct:fail("api_ng_tls (second encode)",[])
+            end;
+        OtherEnc ->
+            ct:log("1st encode~nIn: ~p~nExpected: ~p~nEnc: ~p~n", [{Type,Key,IV,PlainText}, ExpectedEncText, OtherEnc]),
+            ct:fail("api_ng_tls (encode)",[])
+    end,
+    case crypto:crypto_update_dyn_iv(Rdec, EncTxt, IV) of
+        PlainText ->
+            %% Now check that the state is NOT updated:
+            case crypto:crypto_update_dyn_iv(Rdec, EncTxt, IV) of
+                PlainText ->
+                    ok;
+                PlainText2 ->
+                    ct:log("2nd decode~nIn: ~p~nExpected: ~p~nDec: ~p~n", [{Type,Key,IV,EncTxt}, PlainText, PlainText2]),
+                    ct:fail("api_ng_tls (second decode)",[])
+            end;
+        OtherPT ->
+            ct:log("1st decode~nIn: ~p~nExpected: ~p~nDec: ~p~n", [{Type,Key,IV,EncTxt}, PlainText, OtherPT]),
+            ct:fail("api_ng_tlst (decode)",[])
+    end.
+
+%%--------------------------------------------------------------------
 no_aead() ->
      [{doc, "Test disabled aead ciphers"}].
 no_aead(Config) when is_list(Config) ->
     EncArg4 =
-        case lazy_eval(proplists:get_value(aead, Config)) of
+        case lazy_eval(proplists:get_value(cipher, Config)) of
             [{Type, Key, PlainText, Nonce, AAD, CipherText, CipherTag, TagLen, _Info} | _] ->
                 {AAD, PlainText, TagLen};
             [{Type, Key, PlainText, Nonce, AAD, CipherText, CipherTag, _Info} | _] ->
@@ -453,7 +675,7 @@ no_aead(Config) when is_list(Config) ->
 stream() ->
       [{doc, "Test stream ciphers"}].
 stream(Config) when is_list(Config) ->
-    Streams = lazy_eval(proplists:get_value(stream, Config)),
+    [_|_] = Streams = lazy_eval(proplists:get_value(cipher, Config)),
 
     lists:foreach(fun stream_cipher/1, Streams),
     lists:foreach(fun stream_cipher/1, stream_iolistify(Streams)),
@@ -476,8 +698,7 @@ no_stream_ivec(Config) when is_list(Config) ->
 aead() ->
       [{doc, "Test AEAD ciphers"}].
 aead(Config) when is_list(Config) ->
-    AEADs = lazy_eval(proplists:get_value(aead, Config)),
-
+    [_|_] = AEADs = lazy_eval(proplists:get_value(cipher, Config)),
     FilteredAEADs =
 	case proplists:get_bool(fips, Config) of
 	    false ->
@@ -490,7 +711,6 @@ aead(Config) when is_list(Config) ->
 			  IVLen >= 12
 		  end, AEADs)
 	end,
-
     lists:foreach(fun aead_cipher/1, FilteredAEADs).
 
 %%-------------------------------------------------------------------- 
@@ -500,6 +720,13 @@ sign_verify(Config) when is_list(Config) ->
     SignVerify = proplists:get_value(sign_verify, Config),
     lists:foreach(fun do_sign_verify/1, SignVerify).
 
+%%--------------------------------------------------------------------
+no_sign_verify() ->
+    [{doc, "Test disabled sign/verify digital signatures"}].
+no_sign_verify(Config) when is_list(Config) ->
+    [SignVerifyHd|_] = proplists:get_value(sign_verify, Config),
+    notsup(fun do_sign_verify/1, [SignVerifyHd]).
+
 %%-------------------------------------------------------------------- 
 public_encrypt() ->
      [{doc, "Test public_encrypt/decrypt "}].
@@ -563,32 +790,43 @@ compute(Config) when is_list(Config) ->
     Gen = proplists:get_value(compute, Config),
     lists:foreach(fun do_compute/1, Gen).
 %%--------------------------------------------------------------------
-generate_all_supported() ->
-    [{doc, " Test that all curves from crypto:ec_curves/0 returns two binaries"}].
-generate_all_supported(_Config) ->
+use_all_elliptic_curves() ->
+    [{doc, " Test that all curves from crypto:ec_curves/0"}].
+use_all_elliptic_curves(_Config) ->
+    Msg = <<"hello world!">>,
+    Sups = crypto:supports(),
+    Curves = proplists:get_value(curves, Sups),
+    Hashs = proplists:get_value(hashs, Sups),
+    ct:log("Lib: ~p~nFIPS: ~p~nCurves:~n~p~nHashs: ~p", [crypto:info_lib(),
+                                                         crypto:info_fips(),
+                                                         Curves,
+                                                         Hashs]),
     Results =
-        [try
-             crypto:generate_key(ecdh, C)
-         of
-             {B1,B2} when is_binary(B1) and is_binary(B2) ->
-                 %% That is, seems like it works as expected.
-                 {ok,C};
-             Err ->
-                 ct:log("ERROR: Curve ~p generated ~p", [C,Err]),
-                 {error,{C,Err}}
-         catch
-             Cls:Err:Stack ->
-                 ct:log("ERROR: Curve ~p exception ~p:~p~n~p", [C,Cls,Err,Stack]),
-                 {error,{C,{Cls,Err}}}
-         end
-         || C <- crypto:ec_curves(),
-            not lists:member(C, [ed25519, ed448])
+        [{{Curve,Hash},
+          try
+              {Pub,Priv} = crypto:generate_key(ecdh, Curve),
+              true = is_binary(Pub),
+              true = is_binary(Priv),
+              Sig = crypto:sign(ecdsa, Hash, Msg, [Priv, Curve]),
+              crypto:verify(ecdsa, Hash, Msg, Sig, [Pub, Curve])
+          catch
+              C:E ->
+                  {C,E}
+          end}
+         || Curve <- Curves -- [ed25519, ed448, x25519, x448, ipsec3, ipsec4],
+            Hash <- Hashs -- [md4, md5, ripemd160, sha3_224, sha3_256, sha3_384, sha3_512, blake2b, blake2s]
         ],
-    OK = [C || {ok,C} <- Results],
-    ct:log("Ok (len=~p): ~p", [length(OK), OK]),
-    false = lists:any(fun({error,_}) -> true;
-                         (_) -> false
-                      end, Results).
+    Fails =
+        lists:filter(fun({_,true}) -> false;
+                        (_) -> true
+                     end, Results),
+    case Fails of
+        [] ->
+            ok;
+        _ ->
+            ct:log("Fails:~n~p",[Fails]),
+            ct:fail("Bad curve(s)",[])
+    end.
 
 %%--------------------------------------------------------------------
 generate() ->
@@ -645,6 +883,25 @@ rand_plugin_s(Config) when is_list(Config) ->
     rand_plugin_aux(explicit_state).
 
 %%--------------------------------------------------------------------
+cipher_info() ->
+    [{doc, "crypto cipher_info testing"}].
+cipher_info(Config) when is_list(Config) ->
+    #{type := _,key_length := _,iv_length := _,
+        block_size := _,mode := _} = crypto:cipher_info(aes_128_cbc),
+    {'EXIT',_} = (catch crypto:cipher_info(not_a_cipher)),
+    lists:foreach(fun(C) -> crypto:cipher_info(C) end,
+        proplists:get_value(ciphers, crypto:supports())).
+
+%%--------------------------------------------------------------------
+hash_info() ->
+    [{doc, "crypto hash_info testing"}].
+hash_info(Config) when is_list(Config) ->
+    #{type := _,size := _,block_size := _} = crypto:hash_info(sha256),
+    {'EXIT',_} = (catch crypto:hash_info(not_a_hash)),
+    lists:foreach(fun(H) -> crypto:hash_info(H) end,
+        proplists:get_value(hashs, crypto:supports())).
+
+%%--------------------------------------------------------------------
 %% Internal functions ------------------------------------------------
 %%--------------------------------------------------------------------
 hash(_, [], []) ->
@@ -734,6 +991,7 @@ cmac_check({Type, Key, Text, Size, CMac}) ->
             ct:fail({{crypto, cmac, [Type, Key, Text, Size]}, {expected, ExpCMac}, {got, Other}})
     end.
 
+
 block_cipher({Type, Key,  PlainText}) ->
     Plain = iolist_to_binary(PlainText),
     CipherText = crypto:block_encrypt(Type, Key, PlainText),
@@ -769,13 +1027,27 @@ block_cipher({Type, Key, IV, PlainText, CipherText}) ->
 	    ct:fail({{crypto, block_decrypt, [Type, Key, IV, CipherText]}, {expected, Plain}, {got, Other1}})
     end.
 
-block_cipher_increment({Type, Key, IV, PlainTexts})
-  when Type == des_cbc; Type == aes_cbc; Type == des3_cbc ->
+block_cipher_increment({Type, Key, IV, PlainTexts}) when Type == des_cbc ;
+                                                         Type == des3_cbc ;
+                                                         Type == aes_128_cbc ;
+                                                         Type == aes_192_cbc ;
+                                                         Type == aes_256_cbc
+                                                         ->
     block_cipher_increment(Type, Key, IV, IV, PlainTexts, iolist_to_binary(PlainTexts), []);
-block_cipher_increment({Type, Key, IV, PlainTexts, CipherText})
-  when Type == des_cbc; Type == des3_cbc ->
+block_cipher_increment({Type, Key, IV, PlainTexts, CipherText}) when Type == des_cbc; 
+                                                                     Type == des_ede3_cbc ;
+                                                                     Type == des3_cbc ;
+                                                                     Type == des_ede3 ;
+                                                                     Type == des_ede3_cfb ;
+                                                                     Type == des_ede3_cbf ;
+                                                                     Type == des3_cbf ;
+                                                                     Type == des3_cfb
+                                                                     ->
     block_cipher_increment(Type, Key, IV, IV, PlainTexts, iolist_to_binary(PlainTexts), CipherText, []);
-block_cipher_increment({Type, Key, IV, PlainTexts, _CipherText}) when Type == aes_cbc ->
+block_cipher_increment({Type, Key, IV, PlainTexts, _CipherText}) when Type == aes_128_cbc ;
+                                                                      Type == aes_192_cbc ;
+                                                                      Type == aes_256_cbc 
+                                                                      ->
     Plain = iolist_to_binary(PlainTexts),
     Blocks = [iolistify(Block) || << Block:128/bitstring >> <= Plain],
     block_cipher_increment(Type, Key, IV, IV, Blocks, Plain, []);
@@ -809,48 +1081,56 @@ block_cipher_increment(Type, Key, IV0, IV, [PlainText | PlainTexts], Plain, Ciph
     NextIV = crypto:next_iv(Type, CT),
     block_cipher_increment(Type, Key, IV0, NextIV, PlainTexts, Plain, CipherText, [CT | Acc]).
 
-stream_cipher({Type, Key, PlainText}) ->
-    Plain = iolist_to_binary(PlainText),
-    State = crypto:stream_init(Type, Key),
-    {_, CipherText} = crypto:stream_encrypt(State, PlainText),
-    case crypto:stream_decrypt(State, CipherText) of
+stream_cipher({Type, Key, PlainText0}) ->
+    PlainText = lazy_eval(PlainText0),
+    Plain = iolist_to_binary(lazy_eval(PlainText)),
+    StateE = crypto:stream_init(Type, Key),
+    StateD = crypto:stream_init(Type, Key),
+    {_, CipherText} = crypto:stream_encrypt(StateE, PlainText),
+    case crypto:stream_decrypt(StateD, CipherText) of
 	{_, Plain} ->
 	    ok;
 	Other ->
-	    ct:fail({{crypto, stream_decrypt, [State, CipherText]}, {expected, PlainText}, {got, Other}})
+	    ct:fail({{crypto, stream_decrypt, [StateD, CipherText]}, {expected, PlainText}, {got, Other}})
     end;
-stream_cipher({Type, Key, IV, PlainText}) ->
+stream_cipher({Type, Key, IV, PlainText0}) ->
+    PlainText = lazy_eval(PlainText0),
     Plain = iolist_to_binary(PlainText),
-    State = crypto:stream_init(Type, Key, IV),
-    {_, CipherText} = crypto:stream_encrypt(State, PlainText),
-    case crypto:stream_decrypt(State, CipherText) of
+    StateE = crypto:stream_init(Type, Key, IV),
+    StateD = crypto:stream_init(Type, Key, IV),
+    {_, CipherText} = crypto:stream_encrypt(StateE, PlainText),
+    case crypto:stream_decrypt(StateD, CipherText) of
 	{_, Plain} ->
 	    ok;
 	Other ->
-	    ct:fail({{crypto, stream_decrypt, [State, CipherText]}, {expected, PlainText}, {got, Other}})
+	    ct:fail({{crypto, stream_decrypt, [StateD, CipherText]}, {expected, PlainText}, {got, Other}})
     end;
-stream_cipher({Type, Key, IV, PlainText, CipherText}) ->
+stream_cipher({Type, Key, IV, PlainText0, CipherText}) ->
+    PlainText = lazy_eval(PlainText0),
     Plain = iolist_to_binary(PlainText),
-    State = crypto:stream_init(Type, Key, IV),
-    case crypto:stream_encrypt(State, PlainText) of
+    StateE = crypto:stream_init(Type, Key, IV),
+    StateD = crypto:stream_init(Type, Key, IV),
+    case crypto:stream_encrypt(StateE, PlainText) of
         {_, CipherText} ->
             ok;
         {_, Other0} ->
-            ct:fail({{crypto, stream_encrypt, [State, Type, Key, IV, Plain]}, {expected, CipherText}, {got, Other0}})
+            ct:fail({{crypto, stream_encrypt, [StateE, Type, Key, IV, Plain]}, {expected, CipherText}, {got, Other0}})
     end,
-    case crypto:stream_decrypt(State, CipherText) of
+    case crypto:stream_decrypt(StateD, CipherText) of
         {_, Plain} ->
             ok;
         Other1 ->
-            ct:fail({{crypto, stream_decrypt, [State, CipherText]}, {expected, PlainText}, {got, Other1}})
+            ct:fail({{crypto, stream_decrypt, [StateD, CipherText]}, {expected, PlainText}, {got, Other1}})
     end.
 
 stream_cipher_incment({Type, Key, PlainTexts}) ->
-    State = crypto:stream_init(Type, Key),
-    stream_cipher_incment_loop(State, State, PlainTexts, [], iolist_to_binary(PlainTexts));
+    StateE = crypto:stream_init(Type, Key),
+    StateD = crypto:stream_init(Type, Key),
+    stream_cipher_incment_loop(StateE, StateD, PlainTexts, [], iolist_to_binary(PlainTexts));
 stream_cipher_incment({Type, Key, IV, PlainTexts}) ->
-    State = crypto:stream_init(Type, Key, IV),
-    stream_cipher_incment_loop(State, State, PlainTexts, [], iolist_to_binary(PlainTexts));
+    StateE = crypto:stream_init(Type, Key, IV),
+    StateD = crypto:stream_init(Type, Key, IV),
+    stream_cipher_incment_loop(StateE, StateD, PlainTexts, [], iolist_to_binary(PlainTexts));
 stream_cipher_incment({Type, Key, IV, PlainTexts, _CipherText}) ->
     stream_cipher_incment({Type, Key, IV, PlainTexts}).
 
@@ -891,7 +1171,7 @@ aead_cipher({Type, Key, PlainText, IV, AAD, CipherText, CipherTag, Info}) ->
 aead_cipher({Type, Key, PlainText, IV, AAD, CipherText, CipherTag, TagLen, Info}) ->
     <<TruncatedCipherTag:TagLen/binary, _/binary>> = CipherTag,
     Plain = iolist_to_binary(PlainText),
-    case crypto:block_encrypt(Type, Key, IV, {AAD, Plain, TagLen}) of
+    try crypto:block_encrypt(Type, Key, IV, {AAD, Plain, TagLen}) of
 	{CipherText, TruncatedCipherTag} ->
 	    ok;
 	Other0 ->
@@ -900,6 +1180,18 @@ aead_cipher({Type, Key, PlainText, IV, AAD, CipherText, CipherTag, TagLen, Info}
                       [{info,Info}, {key,Key}, {pt,PlainText}, {iv,IV}, {aad,AAD}, {ct,CipherText}, {tag,CipherTag}, {taglen,TagLen}]},
                      {expected, {CipherText, TruncatedCipherTag}},
                      {got, Other0}})
+    catch
+        error:E ->
+            ct:log("~p",[{Type, Key, PlainText, IV, AAD, CipherText, CipherTag, TagLen, Info}]),
+            try crypto:crypto_aead(Type, Key, IV, PlainText, AAD, TagLen, true)
+            of
+                RR ->
+                    ct:log("Works: ~p",[RR])
+            catch
+                CC:EE ->
+                    ct:log("~p:~p", [CC,EE])
+            end,
+            ct:fail("~p",[E])
     end,
     case crypto:block_decrypt(Type, Key, IV, {AAD, CipherText, TruncatedCipherTag}) of
 	Plain ->
@@ -970,7 +1262,7 @@ do_sign_verify({Type, Hash, Public, Private, Msg, Options}) ->
         error:notsup when NotSupLow == true,
                           is_integer(LibVer),
                           LibVer < 16#10001000 ->
-            %% Thoose opts where introduced in 1.0.1
+            %% Those opts where introduced in 1.0.1
             ct:log("notsup but OK in old cryptolib crypto:sign(~p, ~p, ..., ..., ..., ~p)",
                    [Type,Hash,Options]),
             true;
@@ -1148,16 +1440,15 @@ do_stream_iolistify({Type, Key, IV, PlainText}) ->
     {Type, iolistify(Key), IV, iolistify(PlainText)};
 do_stream_iolistify({Type, Key, IV, PlainText, CipherText}) ->
     {Type, iolistify(Key), IV, iolistify(PlainText), CipherText}.
-
-do_block_iolistify({des_cbc = Type, Key, IV, PlainText}) ->
-    {Type, Key, IV, des_iolistify(PlainText)};
-do_block_iolistify({des3_cbc = Type, Key, IV, PlainText}) ->
-    {Type, Key, IV, des_iolistify(PlainText)};
-do_block_iolistify({des3_cbf = Type, Key, IV, PlainText}) ->
-    {Type, Key, IV, des_iolistify(PlainText)};
-do_block_iolistify({des3_cfb = Type, Key, IV, PlainText}) ->
-    {Type, Key, IV, des_iolistify(PlainText)};
-do_block_iolistify({des_ede3 = Type, Key, IV, PlainText}) ->
+do_block_iolistify({Type, Key, IV, PlainText}) when Type == des_cbc ;
+                                                    Type == des_ede3_cbc ;
+                                                    Type == des3_cbc ;
+                                                    Type == des_ede3 ;
+                                                    Type == des_ede3_cfb ;
+                                                    Type == des_ede3_cbf ;
+                                                    Type == des3_cbf ;
+                                                    Type == des3_cfb
+                                                    ->
     {Type, Key, IV, des_iolistify(PlainText)};
 do_block_iolistify({Type, Key, PlainText}) ->
     {Type, iolistify(Key), iolistify(PlainText)};
@@ -1166,10 +1457,13 @@ do_block_iolistify({Type, Key, IV, PlainText}) ->
 do_block_iolistify({Type, Key, IV, PlainText, CipherText}) ->
     {Type, iolistify(Key), IV, iolistify(PlainText), CipherText}.
 
-iolistify(<<"Test With Truncation">>)->
+iolistify(X) ->
+    iolistify1(lazy_eval(X)).
+
+iolistify1(<<"Test With Truncation">>)->
     %% Do not iolistify as it spoils this special case
     <<"Test With Truncation">>;
-iolistify(Msg) when is_binary(Msg) ->
+iolistify1(Msg) when is_binary(Msg) ->
     Length = erlang:byte_size(Msg),
     Split = Length div 2,
     List0 = binary_to_list(Msg),
@@ -1179,8 +1473,8 @@ iolistify(Msg) when is_binary(Msg) ->
        {List1, List2}->
 	   [List1, List2]
    end;
-iolistify(Msg) ->
-    iolistify(list_to_binary(Msg)).
+iolistify1(Msg) when is_list(Msg) ->
+    iolistify1(list_to_binary(Msg)).
 
 des_iolistify(Msg) ->    
     des_iolist(erlang:byte_size(Msg) div 8, Msg, []).
@@ -1427,6 +1721,12 @@ group_config(sha3_384 = Type, Config) ->
 group_config(sha3_512 = Type, Config) ->
     {Msgs,Digests} = sha3_test_vectors(Type),
     [{hash, {Type, Msgs, Digests}}, {hmac, hmac_sha3(Type)} | Config];
+group_config(blake2b = Type, Config) ->
+    {Msgs, Digests} = blake2_test_vectors(Type),
+    [{hash, {Type, Msgs, Digests}}, {hmac, blake2_hmac(Type)} | Config];
+group_config(blake2s = Type, Config) ->
+    {Msgs, Digests} = blake2_test_vectors(Type),
+    [{hash, {Type, Msgs, Digests}}, {hmac, blake2_hmac(Type)} | Config];
 group_config(rsa, Config) ->
     Msg = rsa_plain(),
     Public = rsa_public(),
@@ -1483,7 +1783,6 @@ group_config(dss = Type, Config) ->
     MsgPubEnc = <<"7896345786348 Asldi">>,
     PubPrivEnc = [{dss, Public, Private, MsgPubEnc, []}],
     [{sign_verify, SignVerify}, {pub_priv_encrypt, PubPrivEnc}  | Config];
-
 group_config(ecdsa = Type, Config) ->
     {Private, Public} = ec_key_named(),
     Msg = ec_msg(),
@@ -1495,15 +1794,13 @@ group_config(ecdsa = Type, Config) ->
     MsgPubEnc = <<"7896345786348 Asldi">>,
     PubPrivEnc = [{ecdsa, Public, Private, MsgPubEnc, []}],
     [{sign_verify, SignVerify}, {pub_priv_encrypt, PubPrivEnc} | Config];
-
 group_config(Type, Config) when Type == ed25519 ; Type == ed448 ->
     TestVectors = eddsa(Type),
     [{sign_verify,TestVectors} | Config]; 
-
-
 group_config(srp, Config) ->
     GenerateCompute = [srp3(), srp6(), srp6a(), srp6a_smaller_prime()],
     [{generate_compute, GenerateCompute} | Config];
+
 group_config(ecdh, Config) ->
     Compute = ecdh(),
     Generate = ecc(),
@@ -1511,77 +1808,19 @@ group_config(ecdh, Config) ->
 group_config(dh, Config) ->
     GenerateCompute = [dh()],
     [{generate_compute, GenerateCompute} | Config];
-group_config(des_cbc, Config) ->
-    Block = des_cbc(),
-    [{block, Block} | Config];
-group_config(des_cfb, Config) ->
-    Block = des_cfb(),
-    [{block, Block} | Config];
-group_config(des3_cbc, Config) ->
-    Block = des3_cbc(),
-    [{block, Block} | Config];
-group_config(des3_cbf, Config) ->
-    Block = des3_cbf(),
-    [{block, Block} | Config];
-group_config(des3_cfb, Config) ->
-    Block = des3_cfb(),
-    [{block, Block} | Config];
-group_config(des_ede3, Config) ->
-    Block = des_ede3(),
-    [{block, Block} | Config];
-group_config(rc2_cbc, Config) ->
-    Block = rc2_cbc(),
-    [{block, Block} | Config];
+
 group_config(aes_cbc128 = Type, Config) ->
     Block = fun() -> aes_cbc128(Config) end,
     Pairs = fun() -> cmac_nist(Config, Type) end,
-    [{block, Block}, {cmac, Pairs} | Config];
+    [{cipher, Block}, {cmac, Pairs} | Config];
 group_config(aes_cbc256 = Type, Config) ->
     Block = fun() -> aes_cbc256(Config) end,
     Pairs = fun() -> cmac_nist(Config, Type) end,
-    [{block, Block}, {cmac, Pairs} | Config];
-group_config(aes_ecb, Config) ->
-    Block = fun() -> aes_ecb(Config) end,
-    [{block, Block} | Config];
-group_config(aes_ige256, Config) ->
-    Block = aes_ige256(),
-    [{block, Block} | Config];
-group_config(aes_cfb8, Config) ->
-    Block = fun() -> aes_cfb8(Config) end,
-    [{block, Block} | Config];
-group_config(aes_cfb128, Config) ->
-    Block = fun() -> aes_cfb128(Config) end,
-    [{block, Block} | Config];
-group_config(blowfish_cbc, Config) ->
-    Block = blowfish_cbc(),
-    [{block, Block} | Config];
-group_config(blowfish_ecb, Config) ->
-    Block = blowfish_ecb(),
-    [{block, Block} | Config];
-group_config(blowfish_cfb64, Config) ->
-    Block = blowfish_cfb64(),
-    [{block, Block} | Config];
-group_config(blowfish_ofb64, Config) ->
-    Block = blowfish_ofb64(),
-    [{block, Block} | Config];
-group_config(rc4, Config) ->
-    Stream = rc4(),
-    [{stream, Stream} | Config];
-group_config(aes_ctr, Config) ->
-    Stream = aes_ctr(),
-    [{stream, Stream} | Config];
-group_config(aes_ccm, Config) ->
-    AEAD = fun() -> aes_ccm(Config) end,
-    [{aead, AEAD} | Config];
-group_config(aes_gcm, Config) ->
-    AEAD = fun() -> aes_gcm(Config) end,
-    [{aead, AEAD} | Config];
+    [{cipher, Block}, {cmac, Pairs} | Config];
 group_config(chacha20_poly1305, Config) ->
-    AEAD = chacha20_poly1305(),
-    [{aead, AEAD} | Config];
-group_config(chacha20, Config) ->
-    Stream = chacha20(),
-    [{stream, Stream} | Config];
+    AEAD = chacha20_poly1305(Config),
+    [{cipher, AEAD} | Config];
+
 group_config(poly1305, Config) ->
     V = [%% {Key, Txt, Expect}
          {%% RFC7539 2.5.2
@@ -1591,11 +1830,12 @@ group_config(poly1305, Config) ->
          }
         ],
     [{poly1305,V} | Config];
-group_config(aes_cbc, Config) ->
-    Block = aes_cbc(Config),
-    [{block, Block} | Config];
-group_config(_, Config) ->
-    Config.
+
+group_config(F, Config) ->
+    TestVectors = fun() -> ?MODULE:F(Config) end,
+    [{cipher, TestVectors} | Config].
+
+
 
 rsa_sign_verify_tests(Config, Msg, Public, Private, PublicS, PrivateS, OptsToTry) ->
         case ?config(fips, Config) of
@@ -1693,6 +1933,71 @@ rfc_1321_md5_digests() ->
      hexstr2bin("d174ab98d277d9f5a5611c2c9f419d9f"),
      hexstr2bin("57edf4a22be3c955ac49da2e2107b67a")].
 
+
+%% BLAKE2 re-use SHA3 test vectors.
+blake2_test_vectors(blake2b) ->
+    {sha3_msgs(),
+     [ <<186,128,165,63,152,28,77,13,106,39,151,182,159,18,246,233,76,33,47,20,104,90,196,183,75,18,187,111,219,255,162,209,125,135,197,57,42,171,121,45,194,82,213,222,69,51,204,149,24,211,138,168,219,241,146,90,185,35,134,237,212,0,153,35>>
+     , <<120,106,2,247,66,1,89,3,198,198,253,133,37,82,210,114,145,47,71,64,225,88,71,97,138,134,226,23,247,31,84,25,210,94,16,49,175,238,88,83,19,137,100,68,147,78,176,75,144,58,104,91,20,72,183,85,213,111,112,26,254,155,226,206>>
+     , <<114,133,255,62,139,215,104,214,155,230,43,59,241,135,101,163,37,145,127,169,116,74,194,245,130,162,8,80,188,43,17,65,237,27,62,69,40,89,90,204,144,119,43,223,45,55,220,138,71,19,11,68,243,58,2,232,115,14,90,216,225,102,232,136>>
+     , <<206,116,26,197,147,15,227,70,129,17,117,197,34,123,183,191,205,71,244,38,18,250,228,108,8,9,81,79,158,14,58,17,238,23,115,40,113,71,205,234,238,223,245,7,9,170,113,99,65,254,101,36,15,74,214,119,125,107,250,249,114,110,94,82>>
+     , <<152,251,62,251,114,6,253,25,235,246,155,111,49,44,247,182,78,59,148,219,225,161,113,7,145,57,117,167,147,241,119,225,208,119,96,157,127,186,54,60,187,160,13,5,247,170,78,79,168,113,93,100,40,16,76,10,117,100,59,15,243,253,62,175>>
+     ]};
+blake2_test_vectors(blake2s) ->
+    {sha3_msgs(),
+     [ <<80,140,94,140,50,124,20,226,225,167,43,163,78,235,69,47,55,69,139,32,158,214,58,41,77,153,155,76,134,103,89,130>>
+     , <<105,33,122,48,121,144,128,148,225,17,33,208,66,53,74,124,31,85,182,72,44,161,165,30,27,37,13,253,30,208,238,249>>
+     , <<111,77,245,17,106,111,51,46,218,177,217,225,14,232,125,246,85,123,234,182,37,157,118,99,243,188,213,114,44,19,241,137>>
+     , <<53,141,210,237,7,128,212,5,78,118,203,111,58,91,206,40,65,232,226,245,71,67,29,77,9,219,33,182,109,148,31,199>>
+     , <<190,192,192,230,205,229,182,122,203,115,184,31,121,166,122,64,121,174,28,96,218,201,210,102,26,241,142,159,139,80,223,165>>
+     ]}.
+
+blake2_hmac(Type) ->
+    {Ks, Ds, Hs} = lists:unzip3(
+        [ {hexstr2bin(K), hexstr2bin(D), H}
+          || {{K, D}, H} <- lists:zip(blake2_hmac_key_data(), blake2_hmac_hmac(Type)) ]),
+    {Type, Ks, Ds, Hs}.
+
+blake2_hmac_key_data() ->
+    [ {"0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b 0b0b0b0b",
+       "4869205468657265"}
+    , {"4a656665",
+      "7768617420646f2079612077616e7420 666f72206e6f7468696e673f"}
+    , {"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaa",
+      "dddddddddddddddddddddddddddddddd dddddddddddddddddddddddddddddddd dddddddddddddddddddddddddddddddd dddd"}
+    , {"0102030405060708090a0b0c0d0e0f10 111213141516171819",
+      "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd cdcd"}
+    , {"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaa",
+      "54657374205573696e67204c61726765 72205468616e20426c6f636b2d53697a 65204b6579202d2048617368204b6579 204669727374"}
+    , {"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaa",
+      "54657374205573696e67204c61726765 72205468616e20426c6f636b2d53697a 65204b6579202d2048617368204b6579 204669727374"}
+    , {"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaa",
+      "54686973206973206120746573742075 73696e672061206c6172676572207468 616e20626c6f636b2d73697a65206b65 7920616e642061206c61726765722074 68616e20626c6f636b2d73697a652064 6174612e20546865206b6579206e6565 647320746f2062652068617368656420 6265666f7265206265696e6720757365 642062792074686520484d414320616c 676f726974686d2e"}
+    , {"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaa",
+      "54686973206973206120746573742075 73696e672061206c6172676572207468 616e20626c6f636b2d73697a65206b65 7920616e642061206c61726765722074 68616e20626c6f636b2d73697a652064 6174612e20546865206b6579206e6565 647320746f2062652068617368656420 6265666f7265206265696e6720757365 642062792074686520484d414320616c 676f726974686d2e"}
+    ].
+
+blake2_hmac_hmac(blake2b) ->
+    [ <<53,138,106,24,73,36,137,79,195,75,238,86,128,238,223,87,216,74,55,187,56,131,47,40,142,59,39,220,99,169,140,200,201,30,118,218,71,107,80,139,198,178,212,8,162,72,133,116,82,144,110,74,32,180,140,107,75,85,210,223,15,225,221,36>>
+    , <<111,248,132,248,221,194,166,88,107,60,152,164,205,110,189,241,78,193,2,4,182,113,0,115,235,88,101,173,227,122,38,67,184,128,124,19,53,209,7,236,219,159,254,174,182,130,140,70,37,186,23,44,102,55,158,252,210,34,194,222,17,114,122,180>>
+    , <<244,59,198,44,122,153,53,60,59,44,96,232,239,36,251,189,66,233,84,120,102,220,156,91,228,237,198,244,167,212,188,10,198,32,194,198,0,52,208,64,240,219,175,134,249,233,205,120,145,160,149,89,94,237,85,226,169,150,33,95,12,21,192,24>>
+    , <<229,219,182,222,47,238,66,161,202,160,110,78,123,132,206,64,143,250,92,74,157,226,99,46,202,118,156,222,136,117,1,76,114,208,114,15,234,245,63,118,230,161,128,53,127,82,141,123,244,132,250,58,20,232,204,31,15,59,173,167,23,180,52,145>>
+    , <<165,75,41,67,178,162,2,39,212,28,164,108,9,69,175,9,188,31,174,251,47,73,137,76,35,174,188,85,127,183,156,72,137,220,167,68,8,220,134,80,134,102,122,237,238,74,49,133,197,58,73,200,11,129,76,76,88,19,234,12,139,56,168,248>>
+    , <<180,214,140,139,182,82,151,170,52,132,168,110,29,51,183,138,70,159,33,234,170,158,212,218,159,236,145,218,71,23,34,61,44,15,163,134,170,47,209,241,255,207,89,23,178,103,84,96,53,237,48,238,164,178,19,162,133,148,211,211,169,179,140,170>>
+    , <<171,52,121,128,166,75,94,130,93,209,14,125,50,253,67,160,26,142,109,234,38,122,185,173,125,145,53,36,82,102,24,146,83,17,175,188,176,196,149,25,203,235,221,112,149,64,168,215,37,251,145,26,194,174,233,178,163,170,67,215,150,18,51,147>>
+    , <<97,220,242,140,166,12,169,92,130,89,147,39,171,215,169,161,152,111,242,219,211,199,73,69,198,227,35,186,203,76,159,26,94,103,82,93,20,186,141,98,36,177,98,229,102,23,21,37,83,3,69,169,178,86,8,178,125,251,163,180,146,115,213,6>>
+    ];
+blake2_hmac_hmac(blake2s) ->
+    [ <<101,168,183,197,204,145,54,212,36,232,44,55,226,112,126,116,233,19,192,101,91,153,199,95,64,237,243,135,69,58,50,96>>
+    , <<144,182,40,30,47,48,56,201,5,106,240,180,167,231,99,202,230,254,93,158,180,56,106,14,201,82,55,137,12,16,79,240>>
+    , <<252,196,245,149,41,80,46,52,195,216,218,63,253,171,130,150,106,44,182,55,255,94,155,215,1,19,92,46,148,105,231,144>>
+    , <<70,68,52,220,190,206,9,93,69,106,29,98,214,236,86,248,152,230,37,163,158,92,82,189,249,77,175,17,27,173,131,170>>
+    , <<210,61,121,57,79,83,213,54,160,150,230,81,68,71,238,170,187,5,222,208,27,227,44,25,55,218,106,143,113,3,188,78>>
+    , <<92,76,83,46,110,69,89,83,133,78,21,16,149,38,110,224,127,213,88,129,190,223,139,57,8,217,95,13,190,54,159,234>>
+    , <<203,96,246,167,145,241,64,191,138,162,229,31,243,88,205,178,204,92,3,51,4,91,127,183,122,186,122,179,176,207,178,55>>
+    , <<190,53,233,217,99,171,215,108,1,184,171,181,22,36,240,209,16,96,16,92,213,22,16,58,114,241,117,214,211,189,30,202>>
+    ].
+
 %%% https://www.di-mgt.com.au/sha_testvectors.html
 sha3_msgs() ->
     ["abc",
@@ -2121,19 +2426,19 @@ rfc4231_hmac_sha512() ->
 		"debd71f8867289865df5a32d20cdc944"
 		"b6022cac3c4982b10d5eeb55c3e4de15"
 		"134676fb6de0446065c97440fa8c6a58")].
-des_cbc() ->
+des_cbc(_) ->
     [{des_cbc, 
      hexstr2bin("0123456789abcdef"), 
      hexstr2bin("1234567890abcdef"),
      <<"Now is the time for all ">> }].
       
-des_cfb() ->
+des_cfb(_) ->
     [{des_cfb, 
      hexstr2bin("0123456789abcdef"),
      hexstr2bin("1234567890abcdef"),
      <<"Now is the">>}].
 
-des3_cbc() ->
+des3_cbc(_) ->
     [{des3_cbc,
      [hexstr2bin("0123456789abcdef"), 
       hexstr2bin("fedcba9876543210"),
@@ -2142,7 +2447,7 @@ des3_cbc() ->
      <<"Now is the time for all ">>
      }].
 
-des_ede3() ->
+des_ede3(_) ->
     [{des_ede3,
      [hexstr2bin("8000000000000000"),
       hexstr2bin("4000000000000000"),
@@ -2151,7 +2456,23 @@ des_ede3() ->
       hexstr2bin("0000000000000000")
      }].
 
-des3_cbf() ->
+des_ede3_cbc(_) ->
+    [{des_ede3_cbc,
+     [hexstr2bin("0123456789abcdef"), 
+      hexstr2bin("fedcba9876543210"),
+      hexstr2bin("0f2d4b6987a5c3e1")],
+     hexstr2bin("1234567890abcdef"),
+     <<"Now is the time for all ">>
+     },
+     {des_ede3_cbc,
+     [hexstr2bin("8000000000000000"),
+      hexstr2bin("4000000000000000"),
+      hexstr2bin("2000000000000000")],
+      hexstr2bin("7AD16FFB79C45926"),
+      hexstr2bin("0000000000000000")
+     }].
+
+des3_cbf(_) ->
     [{des3_cbf,
      [hexstr2bin("0123456789abcdef"),
       hexstr2bin("fedcba9876543210"),
@@ -2160,7 +2481,7 @@ des3_cbf() ->
      <<"Now is the time for all ">>
      }].
 
-des3_cfb() ->
+des3_cfb(_) ->
     [{des3_cfb,
      [hexstr2bin("0123456789abcdef"),
       hexstr2bin("fedcba9876543210"),
@@ -2169,7 +2490,16 @@ des3_cfb() ->
      <<"Now is the time for all ">>
      }].
 
-rc2_cbc() ->
+des_ede3_cfb(_) ->
+    [{des_ede3_cfb,
+     [hexstr2bin("0123456789abcdef"),
+      hexstr2bin("fedcba9876543210"),
+      hexstr2bin("0f2d4b6987a5c3e1")],
+     hexstr2bin("1234567890abcdef"),
+     <<"Now is the time for all ">>
+     }].
+
+rc2_cbc(_) ->
     [{rc2_cbc,
      <<146,210,160,124,215,227,153,239,227,17,222,140,3,93,27,191>>,
       <<72,91,135,182,25,42,35,210>>,
@@ -2178,7 +2508,8 @@ rc2_cbc() ->
 
 %% AES CBC test vectors from http://csrc.nist.gov/publications/nistpubs/800-38a/sp800-38a.pdf
 aes_cbc(Config) ->
-   read_rsp(Config, aes_cbc,
+    %% RETIRED aes_*_cbc
+    read_rsp(Config, aes_cbc,
             ["CBCVarTxt128.rsp", "CBCVarKey128.rsp", "CBCGFSbox128.rsp", "CBCKeySbox128.rsp",
              "CBCVarTxt192.rsp", "CBCVarKey192.rsp", "CBCGFSbox192.rsp", "CBCKeySbox192.rsp",
              "CBCVarTxt256.rsp", "CBCVarKey256.rsp", "CBCGFSbox256.rsp", "CBCKeySbox256.rsp",
@@ -2186,15 +2517,32 @@ aes_cbc(Config) ->
             ]).
 
 aes_cbc128(Config) ->
+    %% RETIRED aes_128_cbc
     read_rsp(Config, aes_cbc128,
              ["CBCVarTxt128.rsp", "CBCVarKey128.rsp", "CBCGFSbox128.rsp", "CBCKeySbox128.rsp",
               "CBCMMT128.rsp"]).
 
 aes_cbc256(Config) ->
+    %% RETIRED aes_256_cbc
     read_rsp(Config, aes_cbc256,
              ["CBCVarTxt256.rsp", "CBCVarKey256.rsp", "CBCGFSbox256.rsp", "CBCKeySbox256.rsp",
               "CBCMMT256.rsp"]).
 
+aes_128_cbc(Config) ->
+    read_rsp(Config, aes_128_cbc,
+             ["CBCVarTxt128.rsp", "CBCVarKey128.rsp", "CBCGFSbox128.rsp", "CBCKeySbox128.rsp",
+              "CBCMMT128.rsp"]).
+
+aes_192_cbc(Config) ->
+    read_rsp(Config, aes_192_cbc,
+             ["CBCVarTxt192.rsp", "CBCVarKey192.rsp", "CBCGFSbox192.rsp", "CBCKeySbox192.rsp",
+              "CBCMMT192.rsp"]).
+
+aes_256_cbc(Config) ->
+    read_rsp(Config, aes_256_cbc,
+             ["CBCVarTxt256.rsp", "CBCVarKey256.rsp", "CBCGFSbox256.rsp", "CBCKeySbox256.rsp",
+              "CBCMMT256.rsp"]).
+
 aes_ecb(Config) ->
     read_rsp(Config, aes_ecb,
              ["ECBVarTxt128.rsp", "ECBVarKey128.rsp", "ECBGFSbox128.rsp", "ECBKeySbox128.rsp",
@@ -2202,7 +2550,22 @@ aes_ecb(Config) ->
               "ECBVarTxt256.rsp", "ECBVarKey256.rsp", "ECBGFSbox256.rsp", "ECBKeySbox256.rsp",
               "ECBMMT128.rsp", "ECBMMT192.rsp", "ECBMMT256.rsp"]).
 
-aes_ige256() ->
+aes_128_ecb(Config) ->
+    read_rsp(Config, aes_128_ecb,
+             ["ECBVarTxt128.rsp", "ECBVarKey128.rsp", "ECBGFSbox128.rsp", "ECBKeySbox128.rsp",
+              "ECBMMT128.rsp"]).
+
+aes_192_ecb(Config) ->
+    read_rsp(Config, aes_192_ecb,
+             ["ECBVarTxt192.rsp", "ECBVarKey192.rsp", "ECBGFSbox192.rsp", "ECBKeySbox192.rsp",
+              "ECBMMT192.rsp"]).
+
+aes_256_ecb(Config) ->
+    read_rsp(Config, aes_256_ecb,
+             ["ECBVarTxt256.rsp", "ECBVarKey256.rsp", "ECBGFSbox256.rsp", "ECBKeySbox256.rsp",
+              "ECBMMT256.rsp"]).
+
+aes_ige256(_) ->
     [{aes_ige256,
       hexstr2bin("603deb1015ca71be2b73aef0857d77811f352c073b6108d72d9810a30914dff4"),
       hexstr2bin("000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F"),
@@ -2235,14 +2598,14 @@ aes_cfb128(Config) ->
               "CFB128VarTxt256.rsp", "CFB128VarKey256.rsp", "CFB128GFSbox256.rsp", "CFB128KeySbox256.rsp",
               "CFB128MMT128.rsp", "CFB128MMT192.rsp", "CFB128MMT256.rsp"]).
 
-blowfish_cbc() ->
+blowfish_cbc(_) ->
     [{blowfish_cbc,
       hexstr2bin("0123456789ABCDEFF0E1D2C3B4A59687"), 
       hexstr2bin("FEDCBA9876543210"),
       hexstr2bin("37363534333231204E6F77206973207468652074696D6520666F722000000000")
      }].
 
-blowfish_ecb() ->
+blowfish_ecb(_) ->
     [
      {blowfish_ecb,
       hexstr2bin("0000000000000000"), 
@@ -2339,26 +2702,26 @@ blowfish_ecb() ->
       hexstr2bin("FFFFFFFFFFFFFFFF")}
     ].
 
-blowfish_cfb64() ->
+blowfish_cfb64(_) ->
     [{blowfish_cfb64,
       hexstr2bin("0123456789ABCDEFF0E1D2C3B4A59687"), 
       hexstr2bin("FEDCBA9876543210"),
       hexstr2bin("37363534333231204E6F77206973207468652074696D6520666F722000")
      }].
-blowfish_ofb64() ->
+blowfish_ofb64(_) ->
     [{blowfish_ofb64,
       hexstr2bin("0123456789ABCDEFF0E1D2C3B4A59687"), 
       hexstr2bin("FEDCBA9876543210"),
       hexstr2bin("37363534333231204E6F77206973207468652074696D6520666F722000")
      }].
 
-rc4() ->
+rc4(_) ->
     [{rc4, <<"apaapa">>, <<"Yo baby yo">>},
      {rc4, <<"apaapa">>, list_to_binary(lists:seq(0, 255))},
      {rc4, <<"apaapa">>, long_msg()}
     ].
 
-aes_ctr() ->
+aes_ctr(_) ->
     [  %% F.5.3  CTR-AES192.Encrypt
        {aes_ctr, hexstr2bin("2b7e151628aed2a6abf7158809cf4f3c"), 
 	hexstr2bin("f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff"), 
@@ -2407,24 +2770,109 @@ aes_ctr() ->
     ].
 
 
+aes_128_ctr(_) ->
+    [  %% F.5.3  CTR-AES192.Encrypt
+       {aes_128_ctr, hexstr2bin("2b7e151628aed2a6abf7158809cf4f3c"), 
+	hexstr2bin("f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff"), 
+	hexstr2bin("6bc1bee22e409f96e93d7e117393172a")},
+       {aes_128_ctr, hexstr2bin("2b7e151628aed2a6abf7158809cf4f3c"), 
+	hexstr2bin("f0f1f2f3f4f5f6f7f8f9fafbfcfdff00"), 
+	hexstr2bin("ae2d8a571e03ac9c9eb76fac45af8e51")},
+       {aes_128_ctr, hexstr2bin("2b7e151628aed2a6abf7158809cf4f3c"), 
+	hexstr2bin("f0f1f2f3f4f5f6f7f8f9fafbfcfdff01"), 
+	hexstr2bin("30c81c46a35ce411e5fbc1191a0a52ef") },
+       {aes_128_ctr, hexstr2bin("2b7e151628aed2a6abf7158809cf4f3c"), 
+	hexstr2bin("f0f1f2f3f4f5f6f7f8f9fafbfcfdff02"), 
+	hexstr2bin("f69f2445df4f9b17ad2b417be66c3710")}
+    ].
+       
+aes_192_ctr(_) ->
+    [ %% F.5.3  CTR-AES192.Encrypt
+      {aes_192_ctr, hexstr2bin("8e73b0f7da0e6452c810f32b809079e562f8ead2522c6b7b"), 
+       hexstr2bin("f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff"), 
+       hexstr2bin("6bc1bee22e409f96e93d7e117393172a")},
+      {aes_192_ctr, hexstr2bin("8e73b0f7da0e6452c810f32b809079e562f8ead2522c6b7b"), 
+       hexstr2bin("f0f1f2f3f4f5f6f7f8f9fafbfcfdff00"), 
+       hexstr2bin("ae2d8a571e03ac9c9eb76fac45af8e51")},
+      {aes_192_ctr, hexstr2bin("8e73b0f7da0e6452c810f32b809079e562f8ead2522c6b7b"), 
+       hexstr2bin("f0f1f2f3f4f5f6f7f8f9fafbfcfdff01"), 
+	hexstr2bin("30c81c46a35ce411e5fbc1191a0a52ef")},
+      {aes_192_ctr, hexstr2bin("8e73b0f7da0e6452c810f32b809079e562f8ead2522c6b7b"), 
+       hexstr2bin("f0f1f2f3f4f5f6f7f8f9fafbfcfdff02"), 
+       hexstr2bin("f69f2445df4f9b17ad2b417be66c3710")}
+    ].
+       
+aes_256_ctr(_) ->
+    [ %% F.5.5  CTR-AES256.Encrypt
+      {aes_256_ctr, hexstr2bin("603deb1015ca71be2b73aef0857d77811f352c073b6108d72d9810a30914dff4"), 
+       hexstr2bin("f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff"), 
+       hexstr2bin("6bc1bee22e409f96e93d7e117393172a")},
+      {aes_256_ctr, hexstr2bin("603deb1015ca71be2b73aef0857d77811f352c073b6108d72d9810a30914dff4"), 
+       hexstr2bin("f0f1f2f3f4f5f6f7f8f9fafbfcfdff00"), 
+       hexstr2bin("ae2d8a571e03ac9c9eb76fac45af8e51")},
+      {aes_256_ctr, hexstr2bin("603deb1015ca71be2b73aef0857d77811f352c073b6108d72d9810a30914dff4"), 
+       hexstr2bin("f0f1f2f3f4f5f6f7f8f9fafbfcfdff01"), 
+       hexstr2bin("30c81c46a35ce411e5fbc1191a0a52ef")},
+      {aes_256_ctr, hexstr2bin("603deb1015ca71be2b73aef0857d77811f352c073b6108d72d9810a30914dff4"), 
+       hexstr2bin("f0f1f2f3f4f5f6f7f8f9fafbfcfdff02"), 
+       hexstr2bin("f69f2445df4f9b17ad2b417be66c3710")},
+
+      {aes_256_ctr,  hexstr2bin("603deb1015ca71be2b73aef0857d77811f352c073b6108d72d9810a30914dff4"),
+       hexstr2bin("f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff"),
+       long_msg()}
+    ].
+
+
 aes_gcm(Config) ->
-   read_rsp(Config, aes_gcm,
+    %% RETIRED aes_*_gcm
+    read_rsp(Config, aes_gcm,
+             ["gcmDecrypt128.rsp",
+              "gcmDecrypt192.rsp",
+              "gcmDecrypt256.rsp",
+              "gcmEncryptExtIV128.rsp",
+              "gcmEncryptExtIV192.rsp",
+              "gcmEncryptExtIV256.rsp"]).
+
+aes_128_gcm(Config) ->
+   read_rsp(Config, aes_128_gcm,
             ["gcmDecrypt128.rsp",
-             "gcmDecrypt192.rsp",
-             "gcmDecrypt256.rsp",
-             "gcmEncryptExtIV128.rsp",
-             "gcmEncryptExtIV192.rsp",
+             "gcmEncryptExtIV128.rsp"]).
+
+aes_192_gcm(Config) ->
+   read_rsp(Config, aes_192_gcm,
+            ["gcmDecrypt192.rsp",
+             "gcmEncryptExtIV192.rsp"]).
+
+aes_256_gcm(Config) ->
+   read_rsp(Config, aes_256_gcm,
+            ["gcmDecrypt256.rsp",
              "gcmEncryptExtIV256.rsp"]).
 
+
 aes_ccm(Config) ->
-   read_rsp(Config, aes_ccm,
-            ["VADT128.rsp", "VADT192.rsp", "VADT256.rsp",
-             "VNT128.rsp",  "VNT192.rsp",  "VNT256.rsp",
-             "VPT128.rsp",  "VPT192.rsp",  "VPT256.rsp"
-            ]).
+    %% RETIRED aes_*_ccm
+    read_rsp(Config, aes_ccm,
+             ["VADT128.rsp", "VADT192.rsp", "VADT256.rsp",
+              "VNT128.rsp",  "VNT192.rsp",  "VNT256.rsp",
+              "VPT128.rsp",  "VPT192.rsp",  "VPT256.rsp"
+             ]).
+
+aes_128_ccm(Config) ->
+    read_rsp(Config, aes_128_ccm,
+            ["VADT128.rsp", "VNT128.rsp", "VPT128.rsp"]).
+
+aes_192_ccm(Config) ->
+   read_rsp(Config, aes_192_ccm,
+            ["VADT192.rsp", "VNT192.rsp", "VPT192.rsp"]).
+
+aes_256_ccm(Config) ->
+   read_rsp(Config, aes_256_ccm,
+            ["VADT256.rsp", "VNT256.rsp", "VPT256.rsp"]).
+
+
 
 %% https://tools.ietf.org/html/rfc7539#appendix-A.5
-chacha20_poly1305() ->
+chacha20_poly1305(_) ->
     [
      {chacha20_poly1305,
       hexstr2bin("1c9240a5eb55d38af333888604f6b5f0"                      %% Key
@@ -2471,7 +2919,7 @@ chacha20_poly1305() ->
     ].
 
 
-chacha20() ->
+chacha20(_) ->
 %%% chacha20 (no mode) test vectors from RFC 7539 A.2
     [
      %% Test Vector #1:
@@ -3405,9 +3853,18 @@ parse_rsp(_Type, [], _State, Acc) ->
     Acc;
 parse_rsp(_Type, [<<"DECRYPT">>|_], _State, Acc) ->
     Acc;
+parse_rsp(_Type, [<<"ENCRYPT">>|_], _State, Acc) ->
+    Acc;
 %% AES format
 parse_rsp(Type, [<<"COUNT = ", _/binary>>,
                  <<"KEY = ", Key/binary>>,
+                 <<"PLAINTEXT = ", PlainText/binary>>,
+                 <<"CIPHERTEXT = ", CipherText/binary>>|Next], State, Acc) ->
+    parse_rsp(Type, Next, State,
+              [{Type, hexstr2bin(Key), 
+                hexstr2bin(PlainText), hexstr2bin(CipherText)}|Acc]);
+parse_rsp(Type, [<<"COUNT = ", _/binary>>,
+                 <<"KEY = ", Key/binary>>,
                  <<"IV = ", IV/binary>>,
                  <<"PLAINTEXT = ", PlainText/binary>>,
                  <<"CIPHERTEXT = ", CipherText/binary>>|Next], State, Acc) ->
diff --git a/lib/crypto/test/crypto_bench.spec b/lib/crypto/test/crypto_bench.spec
new file mode 100644
index 0000000000..b9a26d94db
--- /dev/null
+++ b/lib/crypto/test/crypto_bench.spec
@@ -0,0 +1,3 @@
+{suites, "../crypto_test", [
+	crypto_bench_SUITE
+    ]}.
diff --git a/lib/crypto/test/crypto_bench_SUITE.erl b/lib/crypto/test/crypto_bench_SUITE.erl
new file mode 100644
index 0000000000..c66a27f0c8
--- /dev/null
+++ b/lib/crypto/test/crypto_bench_SUITE.erl
@@ -0,0 +1,400 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2009-2018. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+%%
+-module(crypto_bench_SUITE).
+
+%% Note: This directive should only be used in test suites.
+-compile(export_all).
+
+-include_lib("common_test/include/ct_event.hrl").
+-include_lib("common_test/include/ct.hrl").
+
+suite() -> [%%{ct_hooks,[{ts_install_cth,[{nodenames,2}]}]},
+	    {timetrap,{minutes,2}}
+	   ].
+
+all() ->
+    [
+     {group, textblock_256}
+    ].
+
+groups() ->
+    [
+     {textblock_256, [], [
+                          {group, ciphers_128},
+                          {group, ciphers_256}
+                         ]},
+
+     {ciphers_128, [{repeat, 5}], [
+                                   block,
+                                   stream
+                                  ]},
+
+     {ciphers_256, [{repeat, 5}], [
+                                   block,
+                                   stream,
+                                   chacha
+                                  ]}
+    ].
+
+%%%----------------------------------------------------------------
+%%%
+init_per_suite(Config0) ->
+    try crypto:start() of
+        _ ->
+            [{_,_,Info}] = crypto:info_lib(),
+            ct:comment("~s",[Info]),
+            ct:pal("Crypto version: ~p~n~n~p",[Info,crypto:supports()]),
+            Config1 = measure_openssl_aes_cbc([128,256], Config0),
+            calibrate([{sec_goal,10} | Config1])
+
+    catch _:_ ->
+	    {fail, "Crypto did not start"}
+    end.
+
+end_per_suite(_Config) ->
+    application:stop(crypto).
+
+%%%----------------------------------------------------------------
+%%%
+init_per_group(Group, Config) ->
+    case atom_to_list(Group) of
+        "ciphers_"++KeySizeStr ->
+            KeySize = list_to_integer(KeySizeStr),
+            [{key_size,KeySize} | Config];
+
+        "textblock_"++BlockSizeStr ->
+            BlockSize = list_to_integer(BlockSizeStr),
+            [{block_size,BlockSize} | Config];
+
+        _ ->
+            Config
+    end.
+
+end_per_group(_Group, Config) ->
+    Config.
+
+
+measure_openssl_aes_cbc(KeySizes, Config) ->
+    BLno_acc = [baseline(aes_cbc, KeySize, false) || KeySize <- KeySizes],
+    ct:pal("Non-accelerated baseline encryption time [µs/block]:~n~p", [BLno_acc]),
+    BLacc = [baseline(aes_cbc, KeySize, true) || KeySize <- KeySizes],
+    ct:pal("Possibly accelerated baseline encryption time [µs/block]:~n~p", [BLacc]),
+    [{acc,BLacc},
+     {no_acc,BLno_acc} | Config].
+
+calibrate(Config) ->
+    Secs = proplists:get_value(sec_goal, Config, 10),
+    {_,Empty} = data(empty, 0, 0),
+    {Ne,Te} = run1(Secs*3000, Empty),
+    report(["Overhead"], Te/Ne),
+    [{overhead,Te/Ne} | Config].
+
+%%%================================================================
+%%%
+%%%
+block(Config) ->
+    run_cryptos([aes_cbc, aes_gcm, aes_ccm],
+                Config).
+
+stream(Config) ->
+    run_cryptos([aes_ctr],
+                Config).
+    
+chacha(Config) ->
+    run_cryptos([chacha20, chacha20_poly1305],
+                Config).
+    
+
+%%%================================================================
+%%%
+%%%
+
+run_cryptos(Cryptos, Config) ->
+    KeySize = proplists:get_value(key_size, Config),
+    BlockSize = proplists:get_value(block_size, Config),
+    MilliSecGoal = 1000*proplists:get_value(sec_goal,Config),
+    OverHead = proplists:get_value(overhead, Config, 0),
+    [try
+         TimePerOpBrutto = run(Crypto,KeySize,BlockSize,MilliSecGoal),
+         %% ct:pal("Brutto: ~p Overhead: ~p (~.2f %) Netto: ~p",
+         %%        [TimePerOpBrutto, OverHead, 100*OverHead/TimePerOpBrutto,TimePerOpBrutto - OverHead]),
+         TimePerOpBrutto - OverHead
+     of
+         TimePerOp -> % µs
+             %% First, Report speed of encrypting blocks of 1000. [blocks/sec]
+             ReportUnit = 1000,
+             Label = [fmt(Crypto)," key:",KeySize," block:",BlockSize],
+             report(Label,
+                    (BlockSize/ReportUnit)*1000000/TimePerOp
+                   ),
+
+             EffCrypto = case Crypto of
+                             X -> X
+                         end,
+             %% Percent of accelerated speed
+             case find_value([acc,{EffCrypto,KeySize},BlockSize], Config) of
+                 undefined ->
+                     ok;
+                 TimePerOpBaseAcc ->
+                     report(["Percent of acc OpenSSL "|Label],
+                            100*TimePerOpBaseAcc/TimePerOp % Percent of base *speed*
+                           )
+             end,
+
+             %% Percent of non-accelerated speed
+             case find_value([no_acc,{EffCrypto,KeySize},BlockSize], Config) of
+                 undefined ->
+                     ok;
+                 TimePerOpBaseNoAcc ->
+                     report(["Percent of noacc OpenSSL "|Label],
+                            100*TimePerOpBaseNoAcc/TimePerOp % Percent of base *speed*
+                           )
+             end
+     catch
+         _:_ ->
+             ct:pal("~p unsupported",[{Crypto,KeySize,BlockSize}])
+     end
+     || Crypto <- Cryptos,
+        supported(Crypto)
+    ].
+
+
+run(Crypto, KeySize, BlockSize, MilliSecGoal) ->
+    {_Type, Funs} = data(Crypto, KeySize, BlockSize),
+    {Nc,Tc} = run1(MilliSecGoal, Funs),
+    Tc/Nc.
+
+fmt(X) -> X.
+
+
+find_value(KeyPath, PropList, Default) ->
+    try find_value(KeyPath, PropList)
+    of
+        undefined -> Default
+    catch
+        error:function_clause -> Default
+    end.
+
+find_value(KeyPath, PropList) ->
+    lists:foldl(fun(K, L) when is_list(L) -> proplists:get_value(K,L);
+                   (_, _) -> undefined
+                end, PropList, KeyPath).
+
+%%%================================================================
+%%%
+%%%
+funs({block, {Type, Key, IV, Block}}) ->
+    {fun() -> ok end,
+     fun(_) -> crypto:block_encrypt(Type, Key, IV, Block) end,
+     fun(_) -> ok end};
+
+funs({stream, {Type, Key, IV, Block}}) ->
+    {fun() -> {crypto:stream_init(Type, Key, IV),ok} end,
+     fun({Ctx,_}) -> crypto:stream_encrypt(Ctx, Block) end,
+     fun(_) -> ok end}.
+
+
+data(aes_cbc, KeySize, BlockSize) ->
+    Type = case KeySize of
+               128 -> aes_cbc128;
+               256 -> aes_cbc256
+           end,
+    Key = mk_bin(KeySize div 8),
+    IV = mk_bin(16),
+    Block = mk_bin(BlockSize),
+    {Type, funs({block, {Type, Key, IV, Block}})};
+
+data(aes_gcm, KeySize, BlockSize) ->
+    Type = aes_gcm,
+    Key = mk_bin(KeySize div 8),
+    IV = mk_bin(12),
+    Block = mk_bin(BlockSize),
+    AAD = <<01,02,03,04>>,
+    {Type, funs({block, {Type, Key, IV, {AAD,Block,16}}})};
+
+data(aes_ccm, KeySize, BlockSize) ->
+    Type = aes_ccm,
+    Key = mk_bin(KeySize div 8),
+    IV = mk_bin(12),
+    Block = mk_bin(BlockSize),
+    AAD = <<01,02,03,04>>,
+    {Type, funs({block, {Type, Key, IV, {AAD,Block,12}}})};
+
+data(aes_ctr, KeySize, BlockSize) ->
+    Type = aes_ctr,
+    Key = mk_bin(KeySize div 8),
+    IV = mk_bin(16),
+    Block = mk_bin(BlockSize),
+    {Type, funs({stream, {Type, Key, IV, Block}})};
+
+data(chacha20_poly1305, 256=KeySize, BlockSize) ->
+    Type = chacha20_poly1305,
+    Key = mk_bin(KeySize div 8),
+    IV = mk_bin(16),
+    AAD = <<01,02,03,04>>,
+    Block = mk_bin(BlockSize),
+    {Type, funs({block, {Type, Key, IV, {AAD,Block}}})};
+
+data(chacha20, 256=KeySize, BlockSize) ->
+    Type = chacha20,
+    Key = mk_bin(KeySize div 8),
+    IV = mk_bin(16),
+    Block = mk_bin(BlockSize),
+    {Type, funs({stream, {Type, Key, IV, Block}})};
+
+data(empty, 0, 0) ->
+    {undefined,
+     {fun() -> ok end,
+      fun(X) -> X end,
+      fun(_) -> ok end}}.
+
+%%%================================================================
+%%%
+%%%
+run1(MilliSecGoal, Funs) ->
+    Parent = self(),
+    Pid = spawn(fun() ->
+                        {Fi,Fu,Ff} = Funs,
+                        Ctx0 = Fi(),
+                        erlang:garbage_collect(),
+                        T0 = start_time(),
+                        {N,Ctx} = loop(Fu, Ctx0, 0),
+                        T = elapsed_time(T0),
+                        Ff(Ctx),
+                        Parent ! {result,N,microseconds(T)}
+                end),
+    Pid ! go,
+    receive
+    after MilliSecGoal ->
+            Pid ! stop
+    end,
+    receive
+        {result,N,MicroSecs} ->
+            {N,MicroSecs}
+    end.
+
+
+loop(F, Ctx, N) ->
+    receive
+        stop ->
+            {N, Ctx}
+    after 0 ->
+            loop(F, F(Ctx), N+1)
+    end.
+
+%%%----------------------------------------------------------------
+report(LabelList, Value) ->
+    Label = report_chars(lists:concat(LabelList)),
+    ct:pal("ct_event:notify ~p: ~p", [Label, Value]),
+    ct_event:notify(
+      #event{name = benchmark_data,
+             data = [{name, Label},
+                     {value,Value}]}).
+    
+report_chars(Cs) ->
+    [case C of
+         $- -> $_;
+         _ -> C
+     end || C <- Cs].
+
+%%%----------------------------------------------------------------
+supported(Algorithm) ->
+    lists:member(Algorithm,
+                 [A || {_,As} <- crypto:supports(), A <- As]
+                ).
+
+%%%----------------------------------------------------------------
+start_time() ->
+    erlang:system_time().
+
+elapsed_time(StartTime) ->
+    erlang:system_time() - StartTime.
+
+microseconds(Time) ->
+    erlang:convert_time_unit(Time, native, microsecond).
+
+%%%----------------------------------------------------------------
+
+%% Example output:
+%% +DT:aes-128-cbc:3:16
+%% +R:135704772:aes-128-cbc:2.980000
+%% +DT:aes-128-cbc:3:64
+%% +R:36835089:aes-128-cbc:3.000000
+%% +DT:aes-128-cbc:3:256
+%% +R:9398616:aes-128-cbc:3.000000
+%% +DT:aes-128-cbc:3:1024
+%% +R:2355683:aes-128-cbc:2.990000
+%% +DT:aes-128-cbc:3:8192
+%% +R:294508:aes-128-cbc:2.990000
+%% +H:16:64:256:1024:8192
+%% +F:22:aes-128-cbc:728616225.50:785815232.00:802015232.00:806762338.46:806892821.40
+
+baseline(Crypto, KeySize, EVP) ->
+    Spec=
+        case {Crypto,KeySize} of
+            {aes_cbc, 128} -> "aes-128-cbc";
+            {aes_cbc, 256} -> "aes-256-cbc"
+        end,
+    {{Crypto,KeySize}, baseline(Spec, EVP)}.
+
+baseline(Spec, EVP) ->
+    Cmd =
+        case EVP of
+            true -> "openssl speed -mr -evp " ++ Spec;
+            false-> "openssl speed -mr      " ++ Spec
+        end,
+    get_base_values(string:tokens(os:cmd(Cmd),"\n"), Spec, []).
+
+
+get_base_values(["+DT:"++Sdt,
+                 "+R:"++Sr
+                 |T], Crypto, Acc) ->
+    [Crypto0,_GoalSecs0,BlockSize0] = string:tokens(Sdt, ":"),
+    [Nblocks0,Crypto0,RealSecs0] = string:tokens(Sr, ":"),
+    Crypto = fix_possible_space_bug(Crypto0),
+    RealSecs = list_to_float(RealSecs0),
+    BlockSize = list_to_integer(BlockSize0),
+    Nblocks = list_to_integer(Nblocks0),
+    get_base_values(T, Crypto, [{BlockSize, 1000000*RealSecs/Nblocks} | Acc]);
+
+get_base_values([_|T], Crypto, Acc) ->
+    get_base_values(T, Crypto, Acc);
+
+get_base_values([], _, Acc) ->
+    lists:sort(Acc).
+    
+fix_possible_space_bug(S) -> lists:concat(lists:join("-",string:tokens(S,"- "))).
+
+%%%----------------------------------------------------------------
+mk_bin(Size) when Size =< 256 ->
+    list_to_binary(lists:seq(0,Size-1));
+
+mk_bin(Size) when 1024 =< Size ->
+    B = mk_bin(Size div 4),
+    Brest = mk_bin(Size rem 4),
+    <<B/binary, B/binary, B/binary, B/binary, Brest/binary>>;
+
+mk_bin(Size) when 256 < Size ->
+    B = mk_bin(Size div 2),
+    Brest = mk_bin(Size rem 2),
+    <<B/binary, B/binary, Brest/binary>>.
+
diff --git a/lib/crypto/test/engine_SUITE.erl b/lib/crypto/test/engine_SUITE.erl
index 8a45fc9076..3416fbd78d 100644
--- a/lib/crypto/test/engine_SUITE.erl
+++ b/lib/crypto/test/engine_SUITE.erl
@@ -345,13 +345,13 @@ engine_list(Config) when is_list(Config) ->
             {skip, "OTP Test engine not found"};
         {ok, Engine} ->
             try
-                EngineList0 = crypto:engine_list(),
                 case crypto:engine_load(<<"dynamic">>,
                                         [{<<"SO_PATH">>, Engine},
                                          <<"LOAD">>],
                                         []) of
                     {ok, E} ->
                         EngineList0 = crypto:engine_list(),
+                        false = lists:member(<<"MD5">>, EngineList0),
                         ok = crypto:engine_add(E),
                         [<<"MD5">>] = lists:subtract(crypto:engine_list(), EngineList0),
                         ok = crypto:engine_remove(E),
@@ -674,7 +674,7 @@ ensure_load(Config) when is_list(Config) ->
     end.
 
 %%%----------------------------------------------------------------
-%%% Pub/priv key storage tests.  Thoose are for testing the crypto.erl
+%%% Pub/priv key storage tests.  Those are for testing the crypto.erl
 %%% support for using priv/pub keys stored in an engine.
 
 sign_verify_rsa(Config) ->
diff --git a/lib/crypto/vsn.mk b/lib/crypto/vsn.mk
index 6a91244715..deba17fb66 100644
--- a/lib/crypto/vsn.mk
+++ b/lib/crypto/vsn.mk
@@ -1 +1 @@
-CRYPTO_VSN = 4.4
+CRYPTO_VSN = 4.4.1
diff --git a/lib/debugger/doc/src/Makefile b/lib/debugger/doc/src/Makefile
index 56d6085e9c..49b5a4be57 100644
--- a/lib/debugger/doc/src/Makefile
+++ b/lib/debugger/doc/src/Makefile
@@ -114,8 +114,7 @@ include $(ERL_TOP)/make/otp_release_targets.mk
 release_docs_spec: docs
 	$(INSTALL_DIR) "$(RELSYSDIR)/doc/pdf"
 	$(INSTALL_DATA) $(TOP_PDF_FILE) "$(RELSYSDIR)/doc/pdf"
-	$(INSTALL_DIR) "$(RELSYSDIR)/doc/html"
-	($(CP) -rf  $(HTMLDIR) "$(RELSYSDIR)/doc")
+	$(INSTALL_DIR_DATA) $(HTMLDIR) "$(RELSYSDIR)/doc/html"
 	$(INSTALL_DATA) $(INFO_FILE) "$(RELSYSDIR)"
 	$(INSTALL_DIR) "$(RELEASE_PATH)/man/man3"
 	$(INSTALL_DATA) $(MAN3DIR)/* "$(RELEASE_PATH)/man/man3"
diff --git a/lib/debugger/doc/src/debugger.xml b/lib/debugger/doc/src/debugger.xml
index 1ecdbcd064..77285095e7 100644
--- a/lib/debugger/doc/src/debugger.xml
+++ b/lib/debugger/doc/src/debugger.xml
@@ -28,7 +28,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>debugger</module>
+  <module since="">debugger</module>
   <modulesummary>Erlang Debugger.</modulesummary>
   <description>
     <p>Erlang Debugger for debugging and testing of Erlang programs.</p>
@@ -36,10 +36,10 @@
 
   <funcs>
     <func>
-      <name>start()</name>
-      <name>start(File)</name>
-      <name>start(Mode)</name>
-      <name>start(Mode, File)</name>
+      <name since="">start()</name>
+      <name since="">start(File)</name>
+      <name since="">start(Mode)</name>
+      <name since="">start(Mode, File)</name>
       <fsummary>Start Debugger.</fsummary>
       <type>
 	<v>Mode = local | global</v>
@@ -60,7 +60,7 @@
     </func>
 
     <func>
-      <name>quick(Module, Name, Args)</name>
+      <name since="">quick(Module, Name, Args)</name>
       <fsummary>Debug a process.</fsummary>
       <type>
 	<v>Module = Name = atom()</v>
diff --git a/lib/debugger/doc/src/i.xml b/lib/debugger/doc/src/i.xml
index 628b91e9e4..06b0eb876a 100644
--- a/lib/debugger/doc/src/i.xml
+++ b/lib/debugger/doc/src/i.xml
@@ -28,7 +28,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>i</module>
+  <module since="">i</module>
   <modulesummary>Debugger/Interpreter Interface.</modulesummary>
   <description>
     <p>The <c>i</c> module provides short forms for some of
@@ -51,7 +51,7 @@
 
   <funcs>
     <func>
-      <name>im() -> pid()</name>
+      <name since="">im() -> pid()</name>
       <fsummary>Start a graphical monitor.</fsummary>
       <desc>
 	<p>Starts a new graphical monitor. This is the Monitor window,
@@ -63,10 +63,10 @@
     </func>
 
     <func>
-      <name>ii(AbsModules) -> ok</name>
-      <name>ii(AbsModule) -> {module, Module} | error</name>
-      <name>ini(AbsModules) -> ok</name>
-      <name>ini(AbsModule) -> {module, Module} | error</name>
+      <name since="">ii(AbsModules) -> ok</name>
+      <name since="">ii(AbsModule) -> {module, Module} | error</name>
+      <name since="">ini(AbsModules) -> ok</name>
+      <name since="">ini(AbsModule) -> {module, Module} | error</name>
       <fsummary>Interpret a module.</fsummary>
       <type>
 	<v>AbsModules = [AbsModule]</v>
@@ -84,8 +84,8 @@
     </func>
 
     <func>
-      <name>iq(AbsModule) -> ok</name>
-      <name>inq(AbsModule) -> ok</name>
+      <name since="">iq(AbsModule) -> ok</name>
+      <name since="">inq(AbsModule) -> ok</name>
       <fsummary>Stop interpreting a module.</fsummary>
       <type>
 	<v>AbsModule = Module | File</v>
@@ -100,7 +100,7 @@
     </func>
 
     <func>
-      <name>il() -> ok</name>
+      <name since="">il() -> ok</name>
       <fsummary>Make a printout of all interpreted modules</fsummary>
       <desc>
 	<p>Makes a printout of all interpreted modules.
@@ -110,7 +110,7 @@
     </func>
 
     <func>
-      <name>ip() -> ok</name>
+      <name since="">ip() -> ok</name>
       <fsummary>Print the current status of all interpreted
 	processes.</fsummary>
       <desc>
@@ -119,7 +119,7 @@
     </func>
 
     <func>
-      <name>ic() -> ok</name>
+      <name since="">ic() -> ok</name>
       <fsummary>Clear information about processes executing interpreted
 	code.</fsummary>
       <desc>
@@ -129,8 +129,8 @@
     </func>
 
     <func>
-      <name>iaa(Flags) -> true</name>
-      <name>iaa(Flags, Function) -> true</name>
+      <name since="">iaa(Flags) -> true</name>
+      <name since="">iaa(Flags, Function) -> true</name>
       <fsummary>Set when and how to attach to a process.</fsummary>
       <type>
 	<v>Flags = [init | break | exit]</v>
@@ -148,7 +148,7 @@
     </func>
 
     <func>
-      <name>ist(Flag) -> true</name>
+      <name since="">ist(Flag) -> true</name>
       <fsummary>Set how to save call frames.</fsummary>
       <type>
 	<v>Flag = all | no_tail | false</v>
@@ -160,7 +160,7 @@
     </func>
 
     <func>
-      <name>ia(Pid) -> ok | no_proc</name>
+      <name since="">ia(Pid) -> ok | no_proc</name>
       <fsummary>Attache to a process.</fsummary>
       <type>
 	<v>Pid = pid()</v>
@@ -172,7 +172,7 @@
     </func>
 
     <func>
-      <name>ia(X,Y,Z) -> ok | no_proc</name>
+      <name since="">ia(X,Y,Z) -> ok | no_proc</name>
       <fsummary>Attache to a process.</fsummary>
       <type>
 	<v>X = Y = Z = int()</v>
@@ -184,7 +184,7 @@
     </func>
 
     <func>
-      <name>ia(Pid, Function) -> ok | no_proc</name>
+      <name since="">ia(Pid, Function) -> ok | no_proc</name>
       <fsummary>Attache to a process.</fsummary>
       <type>
 	<v>Pid = pid()</v>
@@ -199,7 +199,7 @@
     </func>
 
     <func>
-      <name>ia(X,Y,Z, Function) -> ok | no_proc</name>
+      <name since="">ia(X,Y,Z, Function) -> ok | no_proc</name>
       <fsummary>Attache to a process.</fsummary>
       <type>
 	<v>X = Y = Z = int()</v>
@@ -217,7 +217,7 @@
     </func>
 
     <func>
-      <name>ib(Module, Line) -> ok | {error, break_exists}</name>
+      <name since="">ib(Module, Line) -> ok | {error, break_exists}</name>
       <fsummary>Create a breakpoint.</fsummary>
       <type>
 	<v>Module = atom()</v>
@@ -229,7 +229,7 @@
     </func>
 
     <func>
-      <name>ib(Module, Name, Arity) -> ok | {error, function_not_found}
+      <name since="">ib(Module, Name, Arity) -> ok | {error, function_not_found}
       </name>
       <fsummary>Create breakpoints in the specified function.</fsummary>
       <type>
@@ -243,7 +243,7 @@
     </func>
 
     <func>
-      <name>ir() -> ok</name>
+      <name since="">ir() -> ok</name>
       <fsummary>Delete all breakpoints.</fsummary>
       <desc>
 	<p>Deletes all breakpoints.</p>
@@ -251,7 +251,7 @@
     </func>
 
     <func>
-      <name>ir(Module) -> ok</name>
+      <name since="">ir(Module) -> ok</name>
       <fsummary>Delete all breakpoints in a module.</fsummary>
       <type>
 	<v>Module = atom()</v>
@@ -262,7 +262,7 @@
     </func>
 
     <func>
-      <name>ir(Module, Line) -> ok</name>
+      <name since="">ir(Module, Line) -> ok</name>
       <fsummary>Delete a breakpoint.</fsummary>
       <type>
 	<v>Module = atom()</v>
@@ -274,7 +274,7 @@
     </func>
 
     <func>
-      <name>ir(Module, Name, Arity) -> ok | {error, function_not_found}
+      <name since="">ir(Module, Name, Arity) -> ok | {error, function_not_found}
       </name>
       <fsummary>Delete breakpoints from the specified function.</fsummary>
       <type>
@@ -288,7 +288,7 @@
     </func>
 
     <func>
-      <name>ibd(Module, Line) -> ok</name>
+      <name since="">ibd(Module, Line) -> ok</name>
       <fsummary>Make a breakpoint inactive.</fsummary>
       <type>
 	<v>Module = atom()</v>
@@ -300,7 +300,7 @@
     </func>
 
     <func>
-      <name>ibe(Module, Line) -> ok</name>
+      <name since="">ibe(Module, Line) -> ok</name>
       <fsummary>Make a breakpoint active.</fsummary>
       <type>
 	<v>Module = atom()</v>
@@ -312,7 +312,7 @@
     </func>
 
     <func>
-      <name>iba(Module, Line, Action) -> ok</name>
+      <name since="">iba(Module, Line, Action) -> ok</name>
       <fsummary>Set the trigger action of a breakpoint.</fsummary>
       <type>
 	<v>Module = atom()</v>
@@ -326,7 +326,7 @@
     </func>
 
     <func>
-      <name>ibc(Module, Line, Function) -> ok</name>
+      <name since="">ibc(Module, Line, Function) -> ok</name>
       <fsummary>Set the conditional test of a breakpoint.</fsummary>
       <type>
 	<v>Module = atom()</v>
@@ -348,7 +348,7 @@
     </func>
 
     <func>
-      <name>ipb() -> ok</name>
+      <name since="">ipb() -> ok</name>
       <fsummary>Print all existing breakpoints.</fsummary>
       <desc>
 	<p>Prints all existing breakpoints.</p>
@@ -356,7 +356,7 @@
     </func>
 
     <func>
-      <name>ipb(Module) -> ok</name>
+      <name since="">ipb(Module) -> ok</name>
       <fsummary>Print all existing breakpoints in a module.</fsummary>
       <type>
 	<v>Module = atom()</v>
@@ -367,7 +367,7 @@
     </func>
 
     <func>
-      <name>iv() -> atom()</name>
+      <name since="">iv() -> atom()</name>
       <fsummary>Return the current version number of the interpreter.
       </fsummary>
       <desc>
@@ -377,7 +377,7 @@
     </func>
 
     <func>
-      <name>help() -> ok</name>
+      <name since="">help() -> ok</name>
       <fsummary>Print help text.</fsummary>
       <desc>
 	<p>Prints help text.</p>
diff --git a/lib/debugger/doc/src/int.xml b/lib/debugger/doc/src/int.xml
index 31e9dfe923..a0078714e6 100644
--- a/lib/debugger/doc/src/int.xml
+++ b/lib/debugger/doc/src/int.xml
@@ -28,7 +28,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>int</module>
+  <module since="">int</module>
   <modulesummary>Interpreter Interface.</modulesummary>
   <description>
     <p>The Erlang interpreter provides mechanisms for breakpoints and
@@ -94,10 +94,10 @@
 
   <funcs>
     <func>
-      <name>i(AbsModule) -> {module,Module} | error</name>
-      <name>i(AbsModules) -> ok</name>
-      <name>ni(AbsModule) -> {module,Module} | error</name>
-      <name>ni(AbsModules) -> ok</name>
+      <name since="">i(AbsModule) -> {module,Module} | error</name>
+      <name since="">i(AbsModules) -> ok</name>
+      <name since="">ni(AbsModule) -> {module,Module} | error</name>
+      <name since="">ni(AbsModules) -> ok</name>
       <fsummary>Interpret a module.</fsummary>
       <type>
 	<v>AbsModules = [AbsModule]</v>
@@ -144,8 +144,8 @@
     </func>
 	
     <func>
-      <name>n(AbsModule) -> ok</name>
-      <name>nn(AbsModule) -> ok</name>
+      <name since="">n(AbsModule) -> ok</name>
+      <name since="">nn(AbsModule) -> ok</name>
       <fsummary>Stop interpreting a module.</fsummary>
       <type>
 	<v>AbsModule = Module | File | [Module | File]</v>
@@ -163,7 +163,7 @@
     </func>
 
     <func>
-      <name>interpreted() -> [Module]</name>
+      <name since="">interpreted() -> [Module]</name>
       <fsummary>Get all interpreted modules.</fsummary>
       <type>
 	<v>Module = atom()</v>
@@ -174,7 +174,7 @@
     </func>
 
     <func>
-      <name>file(Module) -> File | {error,not_loaded}</name>
+      <name since="">file(Module) -> File | {error,not_loaded}</name>
       <fsummary>Get the filename for an interpreted module.</fsummary>
       <type>
 	<v>Module = atom()</v>
@@ -187,7 +187,7 @@
     </func>
 
     <func>
-      <name>interpretable(AbsModule) -> true | {error,Reason}</name>
+      <name since="">interpretable(AbsModule) -> true | {error,Reason}</name>
       <fsummary>Check if a module can be interpreted.</fsummary>
       <type>
 	<v>AbsModule = Module | File</v>
@@ -255,9 +255,9 @@
     </func>
 
     <func>
-      <name>auto_attach() -> false | {Flags,Function}</name>
-      <name>auto_attach(false)</name>
-      <name>auto_attach(Flags, Function)</name>
+      <name since="">auto_attach() -> false | {Flags,Function}</name>
+      <name since="">auto_attach(false)</name>
+      <name since="">auto_attach(Flags, Function)</name>
       <fsummary>Get and set when and how to attach to a process.</fsummary>
       <type>
 	<v>Flags = [init | break | exit]</v>
@@ -290,8 +290,8 @@ spawn(Module, Name, [Pid | Args])</pre>
     </func>
 
     <func>
-      <name>stack_trace() -> Flag</name>
-      <name>stack_trace(Flag)</name>
+      <name since="">stack_trace() -> Flag</name>
+      <name since="">stack_trace(Flag)</name>
       <fsummary>Get and set if and how to save call frames.</fsummary>
       <type>
 	<v>Flag = all | no_tail | false</v>
@@ -322,7 +322,7 @@ spawn(Module, Name, [Pid | Args])</pre>
     </func>
 
     <func>
-      <name>break(Module, Line) -> ok | {error,break_exists}</name>
+      <name since="">break(Module, Line) -> ok | {error,break_exists}</name>
       <fsummary>Create a breakpoint.</fsummary>
       <type>
 	<v>Module = atom()</v>
@@ -334,7 +334,7 @@ spawn(Module, Name, [Pid | Args])</pre>
     </func>
 
     <func>
-      <name>delete_break(Module, Line) -> ok</name>
+      <name since="">delete_break(Module, Line) -> ok</name>
       <fsummary>Delete a breakpoint.</fsummary>
       <type>
 	<v>Module = atom()</v>
@@ -346,7 +346,7 @@ spawn(Module, Name, [Pid | Args])</pre>
     </func>
 
     <func>
-      <name>break_in(Module, Name, Arity) -> ok
+      <name since="">break_in(Module, Name, Arity) -> ok
 	| {error,function_not_found}</name>
       <fsummary>Create breakpoints in the specified function.</fsummary>
       <type>
@@ -360,7 +360,7 @@ spawn(Module, Name, [Pid | Args])</pre>
     </func>
 
     <func>
-      <name>del_break_in(Module, Name, Arity) -> ok
+      <name since="">del_break_in(Module, Name, Arity) -> ok
 	| {error,function_not_found}</name>
       <fsummary>Delete breakpoints from the specified function.</fsummary>
       <type>
@@ -374,8 +374,8 @@ spawn(Module, Name, [Pid | Args])</pre>
     </func>
 
     <func>
-      <name>no_break() -> ok</name>
-      <name>no_break(Module) -> ok</name>
+      <name since="">no_break() -> ok</name>
+      <name since="">no_break(Module) -> ok</name>
       <fsummary>Delete all breakpoints.</fsummary>
       <desc>
 	<p>Deletes all breakpoints, or all breakpoints in <c>Module</c>.</p>
@@ -383,7 +383,7 @@ spawn(Module, Name, [Pid | Args])</pre>
     </func>
 
     <func>
-      <name>disable_break(Module, Line) -> ok</name>
+      <name since="">disable_break(Module, Line) -> ok</name>
       <fsummary>Make a breakpoint inactive.</fsummary>
       <type>
 	<v>Module = atom()</v>
@@ -395,7 +395,7 @@ spawn(Module, Name, [Pid | Args])</pre>
     </func>
 
     <func>
-      <name>enable_break(Module, Line) -> ok</name>
+      <name since="">enable_break(Module, Line) -> ok</name>
       <fsummary>Make a breakpoint active.</fsummary>
       <type>
 	<v>Module = atom()</v>
@@ -407,7 +407,7 @@ spawn(Module, Name, [Pid | Args])</pre>
     </func>
 
     <func>
-      <name>action_at_break(Module, Line, Action) -> ok</name>
+      <name since="">action_at_break(Module, Line, Action) -> ok</name>
       <fsummary>Set the trigger action of a breakpoint.</fsummary>
       <type>
 	<v>Module = atom()</v>
@@ -421,7 +421,7 @@ spawn(Module, Name, [Pid | Args])</pre>
     </func>
 
     <func>
-      <name>test_at_break(Module, Line, Function) -> ok</name>
+      <name since="">test_at_break(Module, Line, Function) -> ok</name>
       <fsummary>Set the conditional test of a breakpoint.</fsummary>
       <type>
 	<v>Module = atom()</v>
@@ -438,7 +438,7 @@ spawn(Module, Name, [Pid | Args])</pre>
     </func>
 
     <func>
-      <name>get_binding(Var, Bindings) -> {value,Value} | unbound</name>
+      <name since="">get_binding(Var, Bindings) -> {value,Value} | unbound</name>
       <fsummary>Retrieve a variable binding.</fsummary>
       <type>
 	<v>Var = atom()</v>
@@ -453,8 +453,8 @@ spawn(Module, Name, [Pid | Args])</pre>
     </func>
 
     <func>
-      <name>all_breaks() -> [Break]</name>
-      <name>all_breaks(Module) -> [Break]</name>
+      <name since="">all_breaks() -> [Break]</name>
+      <name since="">all_breaks(Module) -> [Break]</name>
       <fsummary>Get all breakpoints.</fsummary>
       <type>
 	<v>Break = {Point,Options}</v>
@@ -474,7 +474,7 @@ spawn(Module, Name, [Pid | Args])</pre>
     </func>
 
     <func>
-      <name>snapshot() -> [Snapshot]</name>
+      <name since="">snapshot() -> [Snapshot]</name>
       <fsummary>Get information about all processes executing interpreted
 	code.</fsummary>
       <type>
@@ -519,7 +519,7 @@ spawn(Module, Name, [Pid | Args])</pre>
     </func>
 
     <func>
-      <name>clear() -> ok</name>
+      <name since="">clear() -> ok</name>
       <fsummary>Clear information about processes executing interpreted
 	code.</fsummary>
       <desc>
@@ -529,8 +529,8 @@ spawn(Module, Name, [Pid | Args])</pre>
     </func>
 
     <func>
-      <name>continue(Pid) -> ok | {error,not_interpreted}</name>
-      <name>continue(X,Y,Z) -> ok | {error,not_interpreted}</name>
+      <name since="">continue(Pid) -> ok | {error,not_interpreted}</name>
+      <name since="">continue(X,Y,Z) -> ok | {error,not_interpreted}</name>
       <fsummary>Resume process execution.</fsummary>
       <type>
 	<v>Pid = pid()</v>
diff --git a/lib/debugger/src/dbg_icmd.erl b/lib/debugger/src/dbg_icmd.erl
index ac901c5469..0eb258567f 100644
--- a/lib/debugger/src/dbg_icmd.erl
+++ b/lib/debugger/src/dbg_icmd.erl
@@ -248,7 +248,7 @@ handle_int_msg({attached, AttPid}, Status, _Bs,
 	    tell_attached({attached, M, Line, get(trace)}),
 
 	    %% Give info about status and call level as well
-	    %% In this case, Status can not be exit_at
+	    %% In this case, Status cannot be exit_at
 	    Msg = case Status of
 		      idle -> {func_at,M,Line,Le};
 		      break -> {break_at,M,Line,Le};
diff --git a/lib/debugger/test/int_eval_SUITE.erl b/lib/debugger/test/int_eval_SUITE.erl
index 0542e45142..324a44bad8 100644
--- a/lib/debugger/test/int_eval_SUITE.erl
+++ b/lib/debugger/test/int_eval_SUITE.erl
@@ -285,7 +285,10 @@ do_eval(Config, Mod) ->
     DataDir = proplists:get_value(data_dir, Config),
     ok = file:set_cwd(DataDir),
 
-    {ok,Mod} = compile:file(Mod, [report,debug_info]),
+    %% Turn off type-based optimizations across function calls, as it
+    %% would turn many body-recursive calls into tail-recursive calls,
+    %% which would change the stacktrace.
+    {ok,Mod} = compile:file(Mod, [no_module_opt,report,debug_info]),
     {module,Mod} = code:load_file(Mod),
     CompiledRes = Mod:Mod(),
     ok = io:format("Compiled:\n~p", [CompiledRes]),
diff --git a/lib/dialyzer/doc/src/dialyzer.xml b/lib/dialyzer/doc/src/dialyzer.xml
index e34ffd6def..f5e8337eb1 100644
--- a/lib/dialyzer/doc/src/dialyzer.xml
+++ b/lib/dialyzer/doc/src/dialyzer.xml
@@ -29,7 +29,7 @@
     <rev></rev>
     <file>dialyzer.xml</file>
   </header>
-  <module>dialyzer</module>
+  <module since="">dialyzer</module>
   <modulesummary>Dialyzer, a DIscrepancy AnaLYZer for ERlang programs.
   </modulesummary>
   <description>
@@ -472,7 +472,7 @@ dialyzer --plts plt_1 ... plt_n -- files_to_analyze</code>
 
   <funcs>
     <func>
-      <name>format_warning(Msg) -> string()</name>
+      <name since="">format_warning(Msg) -> string()</name>
       <fsummary>Get the string version of a warning message.</fsummary>
       <type>
         <v>Msg = {Tag, Id, msg()}</v>
@@ -485,8 +485,8 @@ dialyzer --plts plt_1 ... plt_n -- files_to_analyze</code>
     </func>
 
     <func>
-      <name>gui() -> ok | {error, Msg}</name>
-      <name>gui(OptList) -> ok | {error, Msg}</name>
+      <name since="">gui() -> ok | {error, Msg}</name>
+      <name since="">gui(OptList) -> ok | {error, Msg}</name>
       <fsummary>Dialyzer GUI version.</fsummary>
       <type>
         <v>OptList</v>
@@ -539,7 +539,7 @@ WarnOpts :: error_handling
     </func>
 
     <func>
-      <name>plt_info(string()) -> {'ok', [{atom(), any()}]} | {'error', atom()}</name>
+      <name since="">plt_info(string()) -> {'ok', [{atom(), any()}]} | {'error', atom()}</name>
       <fsummary>Return information about the specified PLT.</fsummary>
       <desc>
         <p>Returns information about the specified PLT.</p>
@@ -547,7 +547,7 @@ WarnOpts :: error_handling
     </func>
 
     <func>
-      <name>run(OptList) -> Warnings</name>
+      <name since="">run(OptList) -> Warnings</name>
       <fsummary>Dialyzer command-line version.</fsummary>
       <type>
         <v>OptList</v>
diff --git a/lib/dialyzer/doc/src/notes.xml b/lib/dialyzer/doc/src/notes.xml
index 3cf776e566..bc422c43a0 100644
--- a/lib/dialyzer/doc/src/notes.xml
+++ b/lib/dialyzer/doc/src/notes.xml
@@ -32,6 +32,36 @@
   <p>This document describes the changes made to the Dialyzer
     application.</p>
 
+<section><title>Dialyzer 3.3.2</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p> Fix a bug that caused Dialyzer to crash when
+	    analyzing a contract with a module name differing from
+	    the analyzed module's name. The bug was introduced in
+	    Erlang/OTP 18. </p>
+          <p>
+	    Own Id: OTP-15562 Aux Id: ERL-845 </p>
+        </item>
+        <item>
+	    <p> Fix a bug in the handling of the <c>Key</c> argument
+	    of <c>lists:{keysearch, keyfind, keymember}</c>. </p>
+          <p>
+	    Own Id: OTP-15570</p>
+        </item>
+        <item>
+	    <p>Optimize (again) Dialyzer's handling of
+	    left-associative use of <c>andalso</c> and <c>orelse</c>
+	    in guards.</p>
+          <p>
+	    Own Id: OTP-15577 Aux Id: ERL-851, PR-2141, PR-1944 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Dialyzer 3.3.1</title>
 
     <section><title>Improvements and New Features</title>
diff --git a/lib/dialyzer/src/Makefile b/lib/dialyzer/src/Makefile
index fc08e7ca2f..bddd761705 100644
--- a/lib/dialyzer/src/Makefile
+++ b/lib/dialyzer/src/Makefile
@@ -90,8 +90,10 @@ APPUP_TARGET= $(EBIN)/$(APPUP_FILE)
 
 ifeq ($(NATIVE_LIBS_ENABLED),yes)
 ERL_COMPILE_FLAGS += +native
+else
+ERL_COMPILE_FLAGS += -Werror
 endif
-ERL_COMPILE_FLAGS += +warn_export_vars +warn_unused_import +warn_untyped_record +warn_missing_spec +warnings_as_errors
+ERL_COMPILE_FLAGS += +warn_export_vars +warn_unused_import +warn_untyped_record +warn_missing_spec
 
 # ----------------------------------------------------
 # Targets
diff --git a/lib/dialyzer/src/dialyzer_codeserver.erl b/lib/dialyzer/src/dialyzer_codeserver.erl
index 5587cf2bdf..c4e3c322e5 100644
--- a/lib/dialyzer/src/dialyzer_codeserver.erl
+++ b/lib/dialyzer/src/dialyzer_codeserver.erl
@@ -347,13 +347,11 @@ get_file_contract(Key, ContDict) ->
 lookup_mfa_contract(MFA, #codeserver{contracts = ContDict}) ->
   ets_dict_find(MFA, ContDict).
 
--spec lookup_meta_info(module() | mfa(), codeserver()) -> meta_info().
+-spec lookup_meta_info(module() | mfa(), codeserver()) ->
+                          {'ok', meta_info()} | 'error'.
 
 lookup_meta_info(MorMFA, #codeserver{fun_meta_info = FunMetaInfo}) ->
-  case ets_dict_find(MorMFA, FunMetaInfo) of
-    error -> [];
-    {ok, PropList} -> PropList
-  end.
+  ets_dict_find(MorMFA, FunMetaInfo).
 
 -spec get_contracts(codeserver()) ->
                        dict:dict(mfa(), dialyzer_contracts:file_contract()).
diff --git a/lib/dialyzer/src/dialyzer_contracts.erl b/lib/dialyzer/src/dialyzer_contracts.erl
index af7f4385ad..9c36d745c3 100644
--- a/lib/dialyzer/src/dialyzer_contracts.erl
+++ b/lib/dialyzer/src/dialyzer_contracts.erl
@@ -25,7 +25,7 @@
 	 %% get_contract_signature/1,
 	 is_overloaded/1,
 	 process_contract_remote_types/1,
-	 store_tmp_contract/5]).
+	 store_tmp_contract/6]).
 
 -export_type([file_contract/0, plt_contracts/0]).
 
@@ -146,18 +146,18 @@ process_contract_remote_types(CodeServer) ->
   Mods = dialyzer_codeserver:all_temp_modules(CodeServer),
   RecordTable = dialyzer_codeserver:get_records_table(CodeServer),
   ExpTypes = dialyzer_codeserver:get_exported_types(CodeServer),
-  ContractFun =
-    fun({{_M, _F, _A}=MFA, {File, TmpContract, Xtra}}, C0) ->
-        #tmp_contract{contract_funs = CFuns, forms = Forms} = TmpContract,
-        {NewCs, C2} = lists:mapfoldl(fun(CFun, C1) ->
-                                         CFun(ExpTypes, RecordTable, C1)
-                                     end, C0, CFuns),
-        Args = general_domain(NewCs),
-        Contract = #contract{contracts = NewCs, args = Args, forms = Forms},
-        {{MFA, {File, Contract, Xtra}}, C2}
-    end,
   ModuleFun =
     fun(ModuleName) ->
+        ContractFun =
+          fun({MFA, {File, TmpContract, Xtra}}, C0) ->
+              #tmp_contract{contract_funs = CFuns, forms = Forms} = TmpContract,
+              {NewCs, C2} = lists:mapfoldl(fun(CFun, C1) ->
+                                               CFun(ExpTypes, RecordTable, C1)
+                                           end, C0, CFuns),
+              Args = general_domain(NewCs),
+              Contract = #contract{contracts = NewCs, args = Args, forms = Forms},
+              {{MFA, {File, Contract, Xtra}}, C2}
+          end,
         Cache = erl_types:cache__new(),
         {ContractMap, CallbackMap} =
           dialyzer_codeserver:get_temp_contracts(ModuleName, CodeServer),
@@ -474,26 +474,29 @@ insert_constraints([], Map) -> Map.
 
 -type spec_data() :: {TypeSpec :: [_], Xtra:: [_]}.
 
--spec store_tmp_contract(mfa(), file_line(), spec_data(), contracts(), types()) ->
-        contracts().
+-spec store_tmp_contract(module(), mfa(), file_line(), spec_data(),
+                         contracts(), types()) -> contracts().
 
-store_tmp_contract(MFA, FileLine, {TypeSpec, Xtra}, SpecMap, RecordsDict) ->
+store_tmp_contract(Module, MFA, FileLine, {TypeSpec, Xtra}, SpecMap,
+                   RecordsDict) ->
   %% io:format("contract from form: ~tp\n", [TypeSpec]),
-  TmpContract = contract_from_form(TypeSpec, MFA, RecordsDict, FileLine),
+  TmpContract = contract_from_form(TypeSpec, Module, MFA, RecordsDict, FileLine),
   %% io:format("contract: ~tp\n", [TmpContract]),
   maps:put(MFA, {FileLine, TmpContract, Xtra}, SpecMap).
 
-contract_from_form(Forms, MFA, RecDict, FileLine) ->
-  {CFuns, Forms1} = contract_from_form(Forms, MFA, RecDict, FileLine, [], []),
+contract_from_form(Forms, Module, MFA, RecDict, FileLine) ->
+  {CFuns, Forms1} =
+    contract_from_form(Forms, Module, MFA, RecDict, FileLine, [], []),
   #tmp_contract{contract_funs = CFuns, forms = Forms1}.
 
-contract_from_form([{type, _, 'fun', [_, _]} = Form | Left], MFA, RecDict,
-		   FileLine, TypeAcc, FormAcc) ->
+contract_from_form([{type, _, 'fun', [_, _]} = Form | Left], Module, MFA,
+                   RecDict, FileLine, TypeAcc, FormAcc) ->
   TypeFun =
     fun(ExpTypes, RecordTable, Cache) ->
 	{NewType, NewCache} =
 	  try
-            from_form_with_check(Form, ExpTypes, MFA, RecordTable, Cache)
+            from_form_with_check(Form, ExpTypes, Module, MFA, RecordTable,
+                                 Cache)
 	  catch
 	    throw:{error, Msg} ->
 	      {File, Line} = FileLine,
@@ -506,68 +509,74 @@ contract_from_form([{type, _, 'fun', [_, _]} = Form | Left], MFA, RecDict,
     end,
   NewTypeAcc = [TypeFun | TypeAcc],
   NewFormAcc = [{Form, []} | FormAcc],
-  contract_from_form(Left, MFA, RecDict, FileLine, NewTypeAcc, NewFormAcc);
+  contract_from_form(Left, Module, MFA, RecDict, FileLine, NewTypeAcc,
+                     NewFormAcc);
 contract_from_form([{type, _L1, bounded_fun,
 		     [{type, _L2, 'fun', [_, _]} = Form, Constr]}| Left],
-		   MFA, RecDict, FileLine, TypeAcc, FormAcc) ->
+		   Module, MFA, RecDict, FileLine, TypeAcc, FormAcc) ->
   TypeFun =
     fun(ExpTypes, RecordTable, Cache) ->
 	{Constr1, VarTable, Cache1} =
-	  process_constraints(Constr, MFA, RecDict, ExpTypes, RecordTable,
-                              Cache),
+	  process_constraints(Constr, Module, MFA, RecDict, ExpTypes,
+                              RecordTable, Cache),
         {NewType, NewCache} =
-          from_form_with_check(Form, ExpTypes, MFA, RecordTable,
+          from_form_with_check(Form, ExpTypes, Module, MFA, RecordTable,
                                VarTable, Cache1),
         NewTypeNoVars = erl_types:subst_all_vars_to_any(NewType),
 	{{NewTypeNoVars, Constr1}, NewCache}
     end,
   NewTypeAcc = [TypeFun | TypeAcc],
   NewFormAcc = [{Form, Constr} | FormAcc],
-  contract_from_form(Left, MFA, RecDict, FileLine, NewTypeAcc, NewFormAcc);
-contract_from_form([], _MFA, _RecDict, _FileLine, TypeAcc, FormAcc) ->
+  contract_from_form(Left, Module, MFA, RecDict, FileLine, NewTypeAcc,
+                     NewFormAcc);
+contract_from_form([], _Mod, _MFA, _RecDict, _FileLine, TypeAcc, FormAcc) ->
   {lists:reverse(TypeAcc), lists:reverse(FormAcc)}.
 
-process_constraints(Constrs, MFA, RecDict, ExpTypes, RecordTable, Cache) ->
-  {Init0, NewCache} = initialize_constraints(Constrs, MFA, RecDict, ExpTypes,
-                                             RecordTable, Cache),
+process_constraints(Constrs, Module, MFA, RecDict, ExpTypes, RecordTable,
+                    Cache) ->
+  {Init0, NewCache} = initialize_constraints(Constrs, Module, MFA, RecDict,
+                                             ExpTypes, RecordTable, Cache),
   Init = remove_cycles(Init0),
-  constraints_fixpoint(Init, MFA, RecDict, ExpTypes, RecordTable, NewCache).
+  constraints_fixpoint(Init, Module, MFA, RecDict, ExpTypes, RecordTable,
+                       NewCache).
 
-initialize_constraints(Constrs, MFA, RecDict, ExpTypes, RecordTable, Cache) ->
-  initialize_constraints(Constrs, MFA, RecDict, ExpTypes, RecordTable,
+initialize_constraints(Constrs, Module, MFA, RecDict, ExpTypes, RecordTable,
+                       Cache) ->
+  initialize_constraints(Constrs, Module, MFA, RecDict, ExpTypes, RecordTable,
                          Cache, []).
 
-initialize_constraints([], _MFA, _RecDict, _ExpTypes, _RecordTable,
+initialize_constraints([], _Module, _MFA, _RecDict, _ExpTypes, _RecordTable,
                        Cache, Acc) ->
   {Acc, Cache};
-initialize_constraints([Constr|Rest], MFA, RecDict, ExpTypes, RecordTable,
-                       Cache, Acc) ->
+initialize_constraints([Constr|Rest], Module, MFA, RecDict, ExpTypes,
+                       RecordTable, Cache, Acc) ->
   case Constr of
     {type, _, constraint, [{atom, _, is_subtype}, [Type1, Type2]]} ->
       VarTable = erl_types:var_table__new(),
       {T1, NewCache} =
-        final_form(Type1, ExpTypes, MFA, RecordTable, VarTable, Cache),
+       final_form(Type1, ExpTypes, Module, MFA, RecordTable, VarTable, Cache),
       Entry = {T1, Type2},
-      initialize_constraints(Rest, MFA, RecDict, ExpTypes, RecordTable,
-                             NewCache, [Entry|Acc]);
+      initialize_constraints(Rest, Module, MFA, RecDict, ExpTypes,
+                             RecordTable, NewCache, [Entry|Acc]);
     {type, _, constraint, [{atom,_,Name}, List]} ->
       N = length(List),
       throw({error,
 	     io_lib:format("Unsupported type guard ~tw/~w\n", [Name, N])})
   end.
 
-constraints_fixpoint(Constrs, MFA, RecDict, ExpTypes, RecordTable, Cache) ->
+constraints_fixpoint(Constrs, Module, MFA, RecDict, ExpTypes, RecordTable,
+                     Cache) ->
   VarTable = erl_types:var_table__new(),
   {VarTab, NewCache} =
-    constraints_to_dict(Constrs, MFA, RecDict, ExpTypes, RecordTable,
+    constraints_to_dict(Constrs, Module, MFA, RecDict, ExpTypes, RecordTable,
                         VarTable, Cache),
-  constraints_fixpoint(VarTab, MFA, Constrs, RecDict, ExpTypes,
+  constraints_fixpoint(VarTab, Module, MFA, Constrs, RecDict, ExpTypes,
                        RecordTable, NewCache).
 
-constraints_fixpoint(OldVarTab, MFA, Constrs, RecDict, ExpTypes,
+constraints_fixpoint(OldVarTab, Module, MFA, Constrs, RecDict, ExpTypes,
                      RecordTable, Cache) ->
   {NewVarTab, NewCache} =
-    constraints_to_dict(Constrs, MFA, RecDict, ExpTypes, RecordTable,
+    constraints_to_dict(Constrs, Module, MFA, RecDict, ExpTypes, RecordTable,
                         OldVarTab, Cache),
   case NewVarTab of
     OldVarTab ->
@@ -578,19 +587,23 @@ constraints_fixpoint(OldVarTab, MFA, Constrs, RecDict, ExpTypes,
       FinalConstrs = maps:fold(Fun, [], NewVarTab),
       {FinalConstrs, NewVarTab, NewCache};
     _Other ->
-      constraints_fixpoint(NewVarTab, MFA, Constrs, RecDict, ExpTypes,
+      constraints_fixpoint(NewVarTab, Module, MFA, Constrs, RecDict, ExpTypes,
                            RecordTable, NewCache)
   end.
 
-final_form(Form, ExpTypes, MFA, RecordTable, VarTable, Cache) ->
-  from_form_with_check(Form, ExpTypes, MFA, RecordTable, VarTable, Cache).
+final_form(Form, ExpTypes, Module, MFA, RecordTable, VarTable, Cache) ->
+  from_form_with_check(Form, ExpTypes, Module, MFA, RecordTable, VarTable,
+                       Cache).
 
-from_form_with_check(Form, ExpTypes, MFA, RecordTable, Cache) ->
+from_form_with_check(Form, ExpTypes, Module, MFA, RecordTable, Cache) ->
   VarTable = erl_types:var_table__new(),
-  from_form_with_check(Form, ExpTypes, MFA, RecordTable, VarTable, Cache).
+  from_form_with_check(Form, ExpTypes, Module, MFA, RecordTable, VarTable,
+                       Cache).
 
-from_form_with_check(Form, ExpTypes, MFA, RecordTable, VarTable, Cache) ->
-  Site = {spec, MFA},
+from_form_with_check(Form, ExpTypes, Module, MFA, RecordTable, VarTable,
+                     Cache) ->
+  {_, F, A} = MFA,
+  Site = {spec, {Module, F, A}},
   C1 = erl_types:t_check_record_fields(Form, ExpTypes, Site, RecordTable,
                                        VarTable, Cache),
   %% The check costs some time, and with the assumption that contracts
@@ -598,22 +611,22 @@ from_form_with_check(Form, ExpTypes, MFA, RecordTable, VarTable, Cache) ->
   %% erl_types:t_from_form_check_remote(Form, ExpTypes, MFA, RecordTable),
   erl_types:t_from_form(Form, ExpTypes, Site, RecordTable, VarTable, C1).
 
-constraints_to_dict(Constrs, MFA, RecDict, ExpTypes, RecordTable,
+constraints_to_dict(Constrs, Module, MFA, RecDict, ExpTypes, RecordTable,
                     VarTab, Cache) ->
   {Subtypes, NewCache} =
-    constraints_to_subs(Constrs, MFA, RecDict, ExpTypes, RecordTable,
+    constraints_to_subs(Constrs, Module, MFA, RecDict, ExpTypes, RecordTable,
                         VarTab, Cache, []),
   {insert_constraints(Subtypes), NewCache}.
 
-constraints_to_subs([], _MFA, _RecDict, _ExpTypes, _RecordTable,
+constraints_to_subs([], _Module, _MFA, _RecDict, _ExpTypes, _RecordTable,
                     _VarTab, Cache, Acc) ->
   {Acc, Cache};
-constraints_to_subs([{T1, Form2}|Rest], MFA, RecDict, ExpTypes, RecordTable,
-                    VarTab, Cache, Acc) ->
+constraints_to_subs([{T1, Form2}|Rest], Module, MFA, RecDict, ExpTypes,
+                    RecordTable, VarTab, Cache, Acc) ->
   {T2, NewCache} =
-    final_form(Form2, ExpTypes, MFA, RecordTable, VarTab, Cache),
+    final_form(Form2, ExpTypes, Module, MFA, RecordTable, VarTab, Cache),
   NewAcc = [{subtype, T1, T2}|Acc],
-  constraints_to_subs(Rest, MFA, RecDict, ExpTypes, RecordTable,
+  constraints_to_subs(Rest, Module, MFA, RecDict, ExpTypes, RecordTable,
                       VarTab, NewCache, NewAcc).
 
 %% Replaces variables with '_' when necessary to break up cycles among
@@ -898,6 +911,7 @@ is_remote_types_related(Contract, CSig, Sig, MFA, RecDict) ->
 
 t_from_forms_without_remote([{FType, []}], MFA, RecDict) ->
   Site = {spec, MFA},
+  %% FIXME
   Type1 = erl_types:t_from_form_without_remote(FType, Site, RecDict),
   {ok, erl_types:subst_all_vars_to_any(Type1)};
 t_from_forms_without_remote([{_FType, _Constrs}], _MFA, _RecDict) ->
diff --git a/lib/dialyzer/src/dialyzer_utils.erl b/lib/dialyzer/src/dialyzer_utils.erl
index abd89034f3..3fe026b096 100644
--- a/lib/dialyzer/src/dialyzer_utils.erl
+++ b/lib/dialyzer/src/dialyzer_utils.erl
@@ -450,8 +450,9 @@ get_spec_info([{Contract, Ln, [{Id, TypeSpec}]}|Left],
     error ->
       SpecData = {TypeSpec, Xtra},
       NewActiveMap =
-	dialyzer_contracts:store_tmp_contract(MFA, {File, Ln}, SpecData,
-					      ActiveMap, RecordsMap),
+	dialyzer_contracts:store_tmp_contract(ModName, MFA, {File, Ln},
+                                              SpecData, ActiveMap,
+                                              RecordsMap),
       {NewSpecMap, NewCallbackMap} =
 	case Contract of
 	  spec     -> {NewActiveMap, CallbackMap};
@@ -599,24 +600,32 @@ collect_attribute([], _Tag, _File) ->
 -spec is_suppressed_fun(mfa(), codeserver()) -> boolean().
 
 is_suppressed_fun(MFA, CodeServer) ->
-  lookup_fun_property(MFA, nowarn_function, CodeServer).
+  lookup_fun_property(MFA, nowarn_function, CodeServer, false).
 
 -spec is_suppressed_tag(mfa() | module(), dial_warn_tag(), codeserver()) ->
                            boolean().
 
 is_suppressed_tag(MorMFA, Tag, Codeserver) ->
-  not lookup_fun_property(MorMFA, Tag, Codeserver).
-
-lookup_fun_property({M, _F, _A}=MFA, Property, CodeServer) ->
-  MFAPropList = dialyzer_codeserver:lookup_meta_info(MFA, CodeServer),
-  case proplists:get_value(Property, MFAPropList, no) of
-    mod -> false; % suppressed in function
-    func -> true; % requested in function
-    no -> lookup_fun_property(M, Property, CodeServer)
+  not lookup_fun_property(MorMFA, Tag, Codeserver, true).
+
+lookup_fun_property({M, _F, _A}=MFA, Property, CodeServer, NoInfoReturn) ->
+  case dialyzer_codeserver:lookup_meta_info(MFA, CodeServer) of
+    error ->
+      lookup_fun_property(M, Property, CodeServer, NoInfoReturn);
+    {ok, MFAPropList} ->
+      case proplists:get_value(Property, MFAPropList, no) of
+        mod -> false; % suppressed in function
+        func -> true; % requested in function
+        no -> lookup_fun_property(M, Property, CodeServer, NoInfoReturn)
+      end
   end;
-lookup_fun_property(M, Property, CodeServer) when is_atom(M) ->
-  MPropList = dialyzer_codeserver:lookup_meta_info(M, CodeServer),
-  proplists:is_defined(Property, MPropList).
+lookup_fun_property(M, Property, CodeServer, NoInfoReturn) when is_atom(M) ->
+  case dialyzer_codeserver:lookup_meta_info(M, CodeServer) of
+    error ->
+      NoInfoReturn;
+    {ok, MPropList} ->
+      proplists:is_defined(Property, MPropList)
+  end.
 
 %% ============================================================================
 %%
@@ -643,7 +652,7 @@ sets_filter([Mod|Mods], ExpTypes) ->
 src_compiler_opts() ->
   [no_copt, to_core, binary, return_errors,
    no_inline, strict_record_tests, strict_record_updates,
-   dialyzer].
+   dialyzer, no_spawn_compiler_process].
 
 -spec format_errors([{module(), string()}]) -> [string()].
 
diff --git a/lib/dialyzer/src/typer.erl b/lib/dialyzer/src/typer.erl
index 4b99f5f72e..5a1b8619c9 100644
--- a/lib/dialyzer/src/typer.erl
+++ b/lib/dialyzer/src/typer.erl
@@ -980,7 +980,7 @@ fatal_error(Slogan) ->
 
 mode_error(OldMode, NewMode) ->
   Msg = io_lib:format("Mode was previously set to '~s'; "
-		      "can not set it to '~s' now",
+		      "cannot set it to '~s' now",
 		      [OldMode, NewMode]),
   fatal_error(Msg).
 
diff --git a/lib/dialyzer/test/opaque_SUITE_data/results/para b/lib/dialyzer/test/opaque_SUITE_data/results/para
index 37b5b7b44e..eca445315c 100644
--- a/lib/dialyzer/test/opaque_SUITE_data/results/para
+++ b/lib/dialyzer/test/opaque_SUITE_data/results/para
@@ -29,5 +29,6 @@ para4.erl:74: Attempt to test for equality between a term of type para4_adt:int(
 para4.erl:79: Attempt to test for equality between a term of type para4_adt:int(2 | 3 | 4) and a term of opaque type para4_adt:int(5 | 6 | 7)
 para4.erl:84: Attempt to test for equality between a term of type para4_adt:un(3 | 4) and a term of opaque type para4_adt:un(1 | 2)
 para4.erl:89: Attempt to test for equality between a term of type para4_adt:tup({_,_}) and a term of opaque type para4_adt:tup(tuple())
+para4.erl:94: Attempt to test for equality between a term of type para4_adt:t(#{1=>'a'}) and a term of opaque type para4_adt:t(#{2=>'b'})
 para5.erl:13: Attempt to test for inequality between a term of type para5_adt:dd(atom()) and a term of opaque type para5_adt:d()
 para5.erl:8: The test para5_adt:d() =:= para5_adt:d() can never evaluate to 'true'
diff --git a/lib/dialyzer/test/opaque_SUITE_data/src/para/para4.erl b/lib/dialyzer/test/opaque_SUITE_data/src/para/para4.erl
index b9794672a9..8cd049169d 100644
--- a/lib/dialyzer/test/opaque_SUITE_data/src/para/para4.erl
+++ b/lib/dialyzer/test/opaque_SUITE_data/src/para/para4.erl
@@ -88,6 +88,11 @@ adt_tt13() ->
     I2 = adt_tup2(),
     I1 =:= I2. % opaque attempt
 
+adt_tt14() ->
+    I1 = adt_map(),
+    I2 = adt_map2(),
+    I1 =:= I2.
+
 y3() ->
     {a, 3}.
 
@@ -132,3 +137,9 @@ adt_tup() ->
 
 adt_tup2() ->
     para4_adt:tup2().
+
+adt_map() ->
+    para4_adt:map().
+
+adt_map2() ->
+    para4_adt:map2().
diff --git a/lib/dialyzer/test/opaque_SUITE_data/src/para/para4_adt.erl b/lib/dialyzer/test/opaque_SUITE_data/src/para/para4_adt.erl
index 407dd198a7..06a6c22677 100644
--- a/lib/dialyzer/test/opaque_SUITE_data/src/para/para4_adt.erl
+++ b/lib/dialyzer/test/opaque_SUITE_data/src/para/para4_adt.erl
@@ -8,6 +8,8 @@
 
 -export([tup/0, tup2/0]).
 
+-export([map/0, map2/0]).
+
 -export_type([t/1, y/1, int/1, tup/1, un/1]).
 
 -type ai() :: atom() | integer().
@@ -106,3 +108,13 @@ tup() ->
 
 tup2() ->
     foo:tup2().
+
+-spec map() -> t(#{2 => b}).
+
+map() ->
+    foo:map().
+
+-spec map2() -> t(#{1 => a}).
+
+map2() ->
+    foo:map2().
diff --git a/lib/dialyzer/test/options1_SUITE_data/src/compiler/beam_validator.erl b/lib/dialyzer/test/options1_SUITE_data/src/compiler/beam_validator.erl
index ea92613781..3606b21932 100644
--- a/lib/dialyzer/test/options1_SUITE_data/src/compiler/beam_validator.erl
+++ b/lib/dialyzer/test/options1_SUITE_data/src/compiler/beam_validator.erl
@@ -272,7 +272,7 @@ valfun_1(if_end, Vst) ->
 valfun_1({try_case_end,Src}, Vst) ->
     assert_term(Src, Vst),
     kill_state(Vst);
-%% Instructions that can not cause exceptions
+%% Instructions that cannot cause exceptions
 valfun_1({move,Src,Dst}, Vst) ->
     Type = get_term_type(Src, Vst),
     set_type_reg(Type, Dst, Vst);
diff --git a/lib/dialyzer/test/r9c_SUITE_data/src/asn1/asn1ct_gen_ber.erl b/lib/dialyzer/test/r9c_SUITE_data/src/asn1/asn1ct_gen_ber.erl
index 1d065b3723..88b464a721 100644
--- a/lib/dialyzer/test/r9c_SUITE_data/src/asn1/asn1ct_gen_ber.erl
+++ b/lib/dialyzer/test/r9c_SUITE_data/src/asn1/asn1ct_gen_ber.erl
@@ -300,7 +300,7 @@ gen_encode_prim(_Erules,D,DoTag,Value) when record(D,type) ->
 	'ASN1_OPEN_TYPE' ->
 	    emit_encode_func('open_type', Value,DoTag);
 	XX ->
-	    exit({'can not encode' ,XX})
+	    exit({'cannot encode' ,XX})
     end.
 
 
@@ -562,7 +562,7 @@ gen_dec_prim(Erules,Att,BytesVar,DoTag,TagIn,Length,_Form,OptOrMand) ->
 		      BytesVar,","]),
 		false;
 	    Other ->
-		exit({'can not decode' ,Other})
+		exit({'cannot decode' ,Other})
 	end,
 
     NewLength = case DoLength of
diff --git a/lib/dialyzer/test/r9c_SUITE_data/src/asn1/asn1ct_gen_ber_bin_v2.erl b/lib/dialyzer/test/r9c_SUITE_data/src/asn1/asn1ct_gen_ber_bin_v2.erl
index 9164ec6551..573bb15c92 100644
--- a/lib/dialyzer/test/r9c_SUITE_data/src/asn1/asn1ct_gen_ber_bin_v2.erl
+++ b/lib/dialyzer/test/r9c_SUITE_data/src/asn1/asn1ct_gen_ber_bin_v2.erl
@@ -290,7 +290,7 @@ gen_encode_prim(_Erules,D,DoTag,Value) when record(D,type) ->
 	'ASN1_OPEN_TYPE' ->
 	    emit_encode_func('open_type', Value,DoTag);
 	XX ->
-	    exit({'can not encode' ,XX})
+	    exit({'cannot encode' ,XX})
     end.
 
 
@@ -602,7 +602,7 @@ gen_dec_prim(_Erules,Att,BytesVar,DoTag,_TagIn,_Form,_OptOrMand) ->
 		  BytesVar,","]),
 	    add_func({decode_open_type_as_binary,2});
 	Other ->
-	    exit({'can not decode' ,Other})
+	    exit({'cannot decode' ,Other})
     end,
 
     case {DoTag,NewTypeName} of
diff --git a/lib/dialyzer/test/r9c_SUITE_data/src/mnesia/mnesia_lib.erl b/lib/dialyzer/test/r9c_SUITE_data/src/mnesia/mnesia_lib.erl
index 4008f8d789..9e0cdac2dc 100644
--- a/lib/dialyzer/test/r9c_SUITE_data/src/mnesia/mnesia_lib.erl
+++ b/lib/dialyzer/test/r9c_SUITE_data/src/mnesia/mnesia_lib.erl
@@ -779,7 +779,7 @@ error_desc(no_transaction) -> "Operation not allowed outside transactions";
 error_desc(combine_error)  -> "Table options were ilegally combined";
 error_desc(bad_index)  -> "Index already exists or was out of bounds";
 error_desc(already_exists) -> "Some schema option we try to set is already on";
-error_desc(index_exists)-> "Some ops can not  be performed on tabs with index";
+error_desc(index_exists)-> "Some ops cannot  be performed on tabs with index";
 error_desc(no_exists)-> "Tried to perform op on non-existing (non alive) item";
 error_desc(system_limit) -> "Some system_limit was exhausted";
 error_desc(mnesia_down) -> "A transaction involving objects at some remote "
diff --git a/lib/dialyzer/test/r9c_SUITE_data/src/mnesia/mnesia_tm.erl b/lib/dialyzer/test/r9c_SUITE_data/src/mnesia/mnesia_tm.erl
index af49ceff72..b4e9edb7ce 100644
--- a/lib/dialyzer/test/r9c_SUITE_data/src/mnesia/mnesia_tm.erl
+++ b/lib/dialyzer/test/r9c_SUITE_data/src/mnesia/mnesia_tm.erl
@@ -1529,7 +1529,7 @@ commit_participant(Coord, Tid, Bin, C0, DiscNs, _RamNs) ->
     ?eval_debug_fun({?MODULE, commit_participant, pre}, [{tid, Tid}]),
     case catch mnesia_schema:prepare_commit(Tid, C0, {part, Coord}) of
 	{Modified, C, DumperMode} when record(C, commit) ->
-	    %% If we can not find any local unclear decision
+	    %% If we cannot find any local unclear decision
 	    %% we should presume abort at startup recovery
 	    case lists:member(node(), DiscNs) of
 		false ->
diff --git a/lib/dialyzer/test/small_SUITE_data/results/maps_sum b/lib/dialyzer/test/small_SUITE_data/results/maps_sum
index b29ac77d88..daa099e490 100644
--- a/lib/dialyzer/test/small_SUITE_data/results/maps_sum
+++ b/lib/dialyzer/test/small_SUITE_data/results/maps_sum
@@ -1,4 +1,4 @@
 
-maps_sum.erl:15: Invalid type specification for function maps_sum:wrong1/1. The success typing is (maps:iterator() | map()) -> any()
+maps_sum.erl:15: Invalid type specification for function maps_sum:wrong1/1. The success typing is (maps:iterator(_,_) | map()) -> any()
 maps_sum.erl:26: Function wrong2/1 has no local return
 maps_sum.erl:27: The call lists:foldl(fun((_,_,_) -> any()),0,Data::any()) will never return since it differs in the 1st argument from the success typing arguments: (fun((_,_) -> any()),any(),[any()])
diff --git a/lib/dialyzer/test/small_SUITE_data/results/spec_other_module b/lib/dialyzer/test/small_SUITE_data/results/spec_other_module
new file mode 100644
index 0000000000..ab2e35cf55
--- /dev/null
+++ b/lib/dialyzer/test/small_SUITE_data/results/spec_other_module
@@ -0,0 +1,2 @@
+
+spec_other_module.erl:7: Contract for function that does not exist: lists:flatten/1
diff --git a/lib/dialyzer/test/small_SUITE_data/src/lists_key_bug.erl b/lib/dialyzer/test/small_SUITE_data/src/lists_key_bug.erl
new file mode 100644
index 0000000000..ad5cf3c503
--- /dev/null
+++ b/lib/dialyzer/test/small_SUITE_data/src/lists_key_bug.erl
@@ -0,0 +1,75 @@
+-module(lists_key_bug).
+
+%% OTP-15570
+
+-export([is_1/1, is_2/1, i/1, t1/0, t2/0, im/0]).
+
+%% int_set([3])
+is_1(V) ->
+    K = ikey(V),
+    case lists:keyfind(K, 1, [{<<"foo">>, bar}]) of
+        false ->
+            a;
+        {_, _} ->
+            b
+    end.
+
+ikey(1) ->
+    3;
+ikey(2) ->
+    <<"foo">>.
+
+%% int_set([3, 5])
+is_2(V) ->
+    K = iskey(V),
+    case lists:keyfind(K, 1, [{<<"foo">>, bar}]) of
+        false ->
+            a;
+        {_, _} ->
+            b
+    end.
+
+iskey(1) ->
+    12;
+iskey(2) ->
+    14;
+iskey(3) ->
+    <<"foo">>.
+
+%% integer()
+i(V) ->
+    K = intkey(V),
+    case lists:keyfind(K, 1, [{9.0, foo}]) of
+        false ->
+            a;
+        {_, _} ->
+            b
+    end.
+
+intkey(K) when is_integer(K) ->
+    K + 9999.
+
+t1() ->
+    case lists:keyfind({17}, 1, [{{17.0}, true}]) of
+        false ->
+            a;
+        {_, _} ->
+            b
+    end.
+
+t2() ->
+    case lists:keyfind({17.0}, 1, [{{17}, true}]) of
+        false ->
+            a;
+        {_, _} ->
+            b
+    end.
+
+%% Note: #{1.0 => a} =/= #{1 => a}.
+im() ->
+    case lists:keyfind(#{1.0 => a}, 1, [{#{1 => a}, foo}]) of
+        false ->
+            a;
+        {_, _} ->
+            b
+    end.
diff --git a/lib/dialyzer/test/small_SUITE_data/src/spec_other_module.erl b/lib/dialyzer/test/small_SUITE_data/src/spec_other_module.erl
new file mode 100644
index 0000000000..b36742b1bd
--- /dev/null
+++ b/lib/dialyzer/test/small_SUITE_data/src/spec_other_module.erl
@@ -0,0 +1,7 @@
+-module(spec_other_module).
+
+%% OTP-15562 and ERL-845. Example provided by Kostis.
+
+-type deep_list(A) :: [A | deep_list(A)].
+
+-spec lists:flatten(deep_list(A)) -> [A].
diff --git a/lib/dialyzer/vsn.mk b/lib/dialyzer/vsn.mk
index 98ab533a58..7221993963 100644
--- a/lib/dialyzer/vsn.mk
+++ b/lib/dialyzer/vsn.mk
@@ -1 +1 @@
-DIALYZER_VSN = 3.3.1
+DIALYZER_VSN = 3.3.2
diff --git a/lib/diameter/doc/src/diameter.xml b/lib/diameter/doc/src/diameter.xml
index dfa4c803ed..85522c99b2 100644
--- a/lib/diameter/doc/src/diameter.xml
+++ b/lib/diameter/doc/src/diameter.xml
@@ -1,7 +1,9 @@
 <?xml version="1.0" encoding="utf-8" ?>
 <!DOCTYPE erlref SYSTEM "erlref.dtd" [
-  <!ENTITY spawn_opt
+  <!ENTITY spawn_opt2
   '<seealso marker="erts:erlang#spawn_opt-2">erlang:spawn_opt/2</seealso>'>
+  <!ENTITY spawn_opt5
+  '<seealso marker="erts:erlang#spawn_opt-5">erlang:spawn_opt/5</seealso>'>
   <!ENTITY nodes
   '<seealso marker="erts:erlang#nodes-0">erlang:nodes/0</seealso>'>
   <!ENTITY make_ref
@@ -21,7 +23,7 @@
 
 <copyright>
 <year>2011</year>
-<year>2017</year>
+<year>2019</year>
 <holder>Ericsson AB. All Rights Reserved.</holder>
 </copyright>
 <legalnotice>
@@ -55,7 +57,7 @@ limitations under the License.
 <!-- ===================================================================== -->
 <!-- ===================================================================== -->
 
-<module>diameter</module>
+<module since="OTP R14B03">diameter</module>
 <modulesummary>Main API of the diameter application.</modulesummary>
 
 <description>
@@ -1384,12 +1386,22 @@ the same peer.</p>
 </item>
 
 <tag>
-<marker id="spawn_opt"/><c>{spawn_opt, [term()]}</c></tag>
+<marker id="spawn_opt"/><c>{spawn_opt, [term()] | {M,F,A}}</c></tag>
 <item>
 <p>
-Options passed to &spawn_opt; when spawning a process for an
-incoming Diameter request.
-Options <c>monitor</c> and <c>link</c> are ignored.</p>
+An options list passed to &spawn_opt2; to spawn a handler process for an
+incoming Diameter request on the local node, or an MFA that returns
+the pid of a handler process.</p>
+
+<p>
+Options <c>monitor</c> and <c>link</c> are ignored in the list-valued
+case.
+An MFA is applied with an additional term prepended to its argument
+list, and should return either the pid of the handler process that
+invokes <c>diameter_traffic:request/1</c> on the term in order to
+process the request, or the atom <c>discard</c>.
+The handler process need not be local, but diameter must be started on
+the remote node.</p>
 
 <p>
 Defaults to the empty list.</p>
@@ -1574,7 +1586,7 @@ identifies the configuration.</p>
 <!-- ===================================================================== -->
 
 <func>
-<name>add_transport(SvcName, {connect|listen, [Opt]})
+<name since="OTP R14B03">add_transport(SvcName, {connect|listen, [Opt]})
         -> {ok, Ref} | {error, Reason}</name>
 <fsummary>Add transport capability to a service.</fsummary>
 <type>
@@ -1624,7 +1636,7 @@ its transports.</p>
 <!-- ===================================================================== -->
 
 <func>
-<name>call(SvcName, App, Request, [Opt]) -> Answer | ok | {error, Reason}</name>
+<name since="OTP R14B03">call(SvcName, App, Request, [Opt]) -> Answer | ok | {error, Reason}</name>
 <fsummary>Send a Diameter request message.</fsummary>
 <type>
 <v>SvcName = &service_name;</v>
@@ -1730,7 +1742,7 @@ transport connection.</p>
 <!-- ===================================================================== -->
 
 <func>
-<name>origin_state_id() -> &dict_Unsigned32;</name>
+<name since="OTP R14B03">origin_state_id() -> &dict_Unsigned32;</name>
 <fsummary>Returns a reasonable Origin-State-Id.</fsummary>
 <desc>
 <p>
@@ -1748,7 +1760,7 @@ at the time the diameter application was started.</p>
 <!-- ===================================================================== -->
 
 <func>
-<name>remove_transport(SvcName, Pred) -> ok | {error, Reason}</name>
+<name since="OTP R14B03">remove_transport(SvcName, Pred) -> ok | {error, Reason}</name>
 <fsummary>Remove previously added transports.</fsummary>
 <type>
 <v>SvcName = &service_name;</v>
@@ -1795,7 +1807,7 @@ configured on the transport.</p>
 <!-- ===================================================================== -->
 
 <func>
-<name>service_info(SvcName, Info) -> term()</name>
+<name since="OTP R14B03">service_info(SvcName, Info) -> term()</name>
 <fsummary>Return information about a started service.</fsummary>
 <type>
 <v>SvcName = &service_name;</v>
@@ -2114,7 +2126,7 @@ For example:</p>
 <!-- ===================================================================== -->
 
 <func>
-<name>services() -> [SvcName]</name>
+<name since="OTP R14B03">services() -> [SvcName]</name>
 <fsummary>Return the list of started services.</fsummary>
 <type>
 <v>SvcName = &service_name;</v>
@@ -2129,7 +2141,7 @@ Return the list of started services.</p>
 <!-- ===================================================================== -->
 
 <func>
-<name>session_id(Ident) -> &dict_OctetString;</name>
+<name since="OTP R14B03">session_id(Ident) -> &dict_OctetString;</name>
 <fsummary>Return a value for a Session-Id AVP.</fsummary>
 <type>
 <v>Ident = &dict_DiameterIdentity;</v>
@@ -2148,7 +2160,7 @@ the message containing the returned value will be sent.</p>
 
 <!-- ===================================================================== -->
 <func>
-<name>start() -> ok | {error, Reason}</name>
+<name since="OTP R14B03">start() -> ok | {error, Reason}</name>
 <fsummary>Start the diameter application.</fsummary>
 <desc>
 <p>
@@ -2164,7 +2176,7 @@ file, not by calling <c>start/0</c> explicitly.</p>
 
 <!-- ===================================================================== -->
 <func>
-<name>start_service(SvcName, Options) -> ok | {error, Reason}</name>
+<name since="OTP R14B03">start_service(SvcName, Options) -> ok | {error, Reason}</name>
 <fsummary>Start a Diameter service.</fsummary>
 <type>
 <v>SvcName = &service_name;</v>
@@ -2194,7 +2206,7 @@ necessarily the case.</p>
 
 <!-- ===================================================================== -->
 <func>
-<name>stop() -> ok | {error, Reason}</name>
+<name since="OTP R14B03">stop() -> ok | {error, Reason}</name>
 <fsummary>Stop the diameter application.</fsummary>
 <desc>
 <p>
@@ -2208,7 +2220,7 @@ Stop the diameter application.</p>
 
 <!-- ===================================================================== -->
 <func>
-<name>stop_service(SvcName) -> ok | {error, Reason}</name>
+<name since="OTP R14B03">stop_service(SvcName) -> ok | {error, Reason}</name>
 <fsummary>Stop a Diameter service.</fsummary>
 <type>
 <v>SvcName = &service_name;</v>
@@ -2236,7 +2248,7 @@ be called to remove transport configuration.</p>
 <!-- ===================================================================== -->
 
 <func>
-<name>subscribe(SvcName) -> true</name>
+<name since="OTP R14B03">subscribe(SvcName) -> true</name>
 <fsummary>Subscribe to event messages.</fsummary>
 <type>
 <v>SvcName = &service_name;</v>
@@ -2258,7 +2270,7 @@ reception of all transport-related events.</p>
 <!-- ===================================================================== -->
 
 <func>
-<name>unsubscribe(SvcName) -> true</name>
+<name since="OTP R14B03">unsubscribe(SvcName) -> true</name>
 <fsummary>Unsubscribe to event messages.</fsummary>
 <type>
 <v>SvcName = &service_name;</v>
diff --git a/lib/diameter/doc/src/diameter_app.xml b/lib/diameter/doc/src/diameter_app.xml
index aa334beb21..82e3d449ef 100644
--- a/lib/diameter/doc/src/diameter_app.xml
+++ b/lib/diameter/doc/src/diameter_app.xml
@@ -44,7 +44,7 @@ limitations under the License.
 
 </header>
 
-<module>diameter_app</module>
+<module since="OTP R14B03">diameter_app</module>
 <modulesummary>
 Callback module of a Diameter application.</modulesummary>
 
@@ -180,7 +180,7 @@ process.</p>
 <funcs>
 
 <func>
-<name>Mod:peer_up(SvcName, Peer, State) -> NewState</name>
+<name since="OTP R14B03">Mod:peer_up(SvcName, Peer, State) -> NewState</name>
 <fsummary>Invoked when a transport connection has been established</fsummary>
 <type>
 <v>SvcName = &mod_service_name;</v>
@@ -215,7 +215,7 @@ handled independently of &peer_up; and &peer_down;.</p>
 </func>
 
 <func>
-<name>Mod:peer_down(SvcName, Peer, State) -> NewState</name>
+<name since="OTP R14B03">Mod:peer_down(SvcName, Peer, State) -> NewState</name>
 <fsummary>Invoked when a transport connection has been lost.</fsummary>
 <type>
 <v>SvcName = &mod_service_name;</v>
@@ -234,7 +234,7 @@ candidate in &pick_peer; callbacks.</p>
 </func>
 
 <func>
-<name>Mod:pick_peer(LocalCandidates, RemoteCandidates, SvcName, State)
+<name since="OTP R14B03">Mod:pick_peer(LocalCandidates, RemoteCandidates, SvcName, State)
       -> Selection | false</name>
 <fsummary>Select a target peer for an outgoing request.</fsummary>
 <type>
@@ -311,7 +311,7 @@ or &peer_down; callback.</p>
 </func>
 
 <func>
-<name>Mod:prepare_request(Packet, SvcName, Peer) -> Action</name>
+<name since="OTP R14B03">Mod:prepare_request(Packet, SvcName, Peer) -> Action</name>
 <fsummary>Return a request for encoding and transport.</fsummary>
 <type>
 <v>Packet = &packet;</v>
@@ -363,7 +363,7 @@ discarded}</c>.</p>
 </func>
 
 <func>
-<name>Mod:prepare_retransmit(Packet, SvcName, Peer) -> Action</name>
+<name since="OTP R14B03">Mod:prepare_retransmit(Packet, SvcName, Peer) -> Action</name>
 <fsummary>Return a request for encoding and retransmission.</fsummary>
 <type>
 <v>Packet  = &packet;</v>
@@ -393,7 +393,7 @@ discarded}</c>.</p>
 </func>
 
 <func>
-<name>Mod:handle_answer(Packet, Request, SvcName, Peer) -> Result</name>
+<name since="OTP R14B03">Mod:handle_answer(Packet, Request, SvcName, Peer) -> Result</name>
 <fsummary>Receive an answer message from a peer.</fsummary>
 <type>
 <v>Packet  = &packet;</v>
@@ -437,7 +437,7 @@ The &mod_application_opt;
 </func>
 
 <func>
-<name>Mod:handle_error(Reason, Request, SvcName, Peer) -> Result</name>
+<name since="OTP R14B03">Mod:handle_error(Reason, Request, SvcName, Peer) -> Result</name>
 <fsummary>Return an error from a outgoing request.</fsummary>
 <type>
 <v>Reason  = timeout | failover | term()</v>
@@ -465,7 +465,7 @@ not selected.</p>
 </func>
 
 <func>
-<name>Mod:handle_request(Packet, SvcName, Peer) -> Action</name>
+<name since="OTP R14B03">Mod:handle_request(Packet, SvcName, Peer) -> Action</name>
 <fsummary>Receive an incoming request.</fsummary>
 <type>
 <v>Packet  = &packet;</v>
diff --git a/lib/diameter/doc/src/diameter_codec.xml b/lib/diameter/doc/src/diameter_codec.xml
index 0a34dd7ec7..0384ad2913 100644
--- a/lib/diameter/doc/src/diameter_codec.xml
+++ b/lib/diameter/doc/src/diameter_codec.xml
@@ -46,7 +46,7 @@ limitations under the License.
 <file>diameter_codec.xml</file>
 </header>
 
-<module>diameter_codec</module>
+<module since="OTP R15B03">diameter_codec</module>
 <modulesummary>Decode and encode of Diameter messages.</modulesummary>
 
 <description>
@@ -346,7 +346,7 @@ question, as documented in &man_transport;.</p>
 <funcs>
 
 <func>
-<name>decode(Mod, Bin) -> Pkt</name>
+<name since="OTP R15B03">decode(Mod, Bin) -> Pkt</name>
 <fsummary>Decode a Diameter message.</fsummary>
 <type>
 <v>Mod = &dictionary;</v>
@@ -362,7 +362,7 @@ Decode a Diameter message.</p>
 </func>
 
 <func>
-<name>encode(Mod, Msg) -> Pkt</name>
+<name since="OTP R15B03">encode(Mod, Msg) -> Pkt</name>
 <fsummary>Encode a Diameter message.</fsummary>
 <type>
 <v>Mod = &dictionary;</v>
diff --git a/lib/diameter/doc/src/diameter_make.xml b/lib/diameter/doc/src/diameter_make.xml
index 112355816f..57e83bbca1 100644
--- a/lib/diameter/doc/src/diameter_make.xml
+++ b/lib/diameter/doc/src/diameter_make.xml
@@ -45,7 +45,7 @@ limitations under the License.
 <file>diameter_make.xml</file>
 </header>
 
-<module>diameter_make</module>
+<module since="OTP R14B03">diameter_make</module>
 <modulesummary>Diameter dictionary compilation.</modulesummary>
 
 <description>
@@ -67,7 +67,7 @@ interface.</p>
 <funcs>
 
 <func>
-<name>codec(File :: iolist() | binary(), [Opt]) -> ok
+<name since="OTP R15B">codec(File :: iolist() | binary(), [Opt]) -> ok
                                                  | {ok, [Out]}
                                                  | {error, Reason}</name>
 <fsummary>Compile a dictionary file into Erlang source.</fsummary>
@@ -186,7 +186,7 @@ A returned error reason can be converted into a readable string using
 <!-- ===================================================================== -->
 
 <func>
-<name>format(Parsed) -> iolist()</name>
+<name since="OTP R16B03">format(Parsed) -> iolist()</name>
 <fsummary>Format a parsed dictionary.</fsummary>
 <desc>
 <p>
@@ -198,7 +198,7 @@ dictionary format.</p>
 <!-- ===================================================================== -->
 
 <func>
-<name>flatten(Parsed) -> term()</name>
+<name since="OTP R16B03">flatten(Parsed) -> term()</name>
 <fsummary>Flatten a parsed dictionary.</fsummary>
 <desc>
 
@@ -214,7 +214,7 @@ The return value is also a parsed dictionary.</p>
 <!-- ===================================================================== -->
 
 <func>
-<name>format_error(Reason) -> string()</name>
+<name since="OTP 17.0">format_error(Reason) -> string()</name>
 <fsummary>Turn an error reason into a readable string.</fsummary>
 <desc>
 
diff --git a/lib/diameter/doc/src/diameter_sctp.xml b/lib/diameter/doc/src/diameter_sctp.xml
index 62e958870e..2cf924ee6b 100644
--- a/lib/diameter/doc/src/diameter_sctp.xml
+++ b/lib/diameter/doc/src/diameter_sctp.xml
@@ -47,7 +47,7 @@ limitations under the License.
 <file>diameter_sctp.xml</file>
 </header>
 
-<module>diameter_sctp</module>
+<module since="OTP R14B03">diameter_sctp</module>
 <modulesummary>Diameter transport over SCTP.</modulesummary>
 
 <description>
@@ -67,7 +67,7 @@ and implements the behaviour documented in
 <funcs>
 
 <func>
-<name>start({Type, Ref}, Svc, [Opt])
+<name since="OTP R14B03">start({Type, Ref}, Svc, [Opt])
          -> {ok, Pid, [LAddr]} | {error, Reason}</name>
 <fsummary>Start a transport process.</fsummary>
 <type>
diff --git a/lib/diameter/doc/src/diameter_tcp.xml b/lib/diameter/doc/src/diameter_tcp.xml
index 9f84eeb9fd..fe0cb2d067 100644
--- a/lib/diameter/doc/src/diameter_tcp.xml
+++ b/lib/diameter/doc/src/diameter_tcp.xml
@@ -57,7 +57,7 @@ limitations under the License.
 <file>diameter_tcp.xml</file>
 </header>
 
-<module>diameter_tcp</module>
+<module since="OTP R14B03">diameter_tcp</module>
 <modulesummary>Diameter transport over TCP.</modulesummary>
 
 <description>
@@ -83,7 +83,7 @@ before configuring TLS capability on diameter transports.</p>
 <funcs>
 
 <func>
-<name>start({Type, Ref}, Svc, [Opt])
+<name since="OTP R14B03">start({Type, Ref}, Svc, [Opt])
          -> {ok, Pid}
           | {ok, Pid, [LAddr]}
           | {error, Reason}</name>
diff --git a/lib/diameter/doc/src/diameter_transport.xml b/lib/diameter/doc/src/diameter_transport.xml
index 294e8a8864..0a8ef321c6 100644
--- a/lib/diameter/doc/src/diameter_transport.xml
+++ b/lib/diameter/doc/src/diameter_transport.xml
@@ -14,7 +14,8 @@
 <erlref>
 <header>
 <copyright>
-<year>2011</year><year>2016</year>
+<year>2011</year>
+<year>2019</year>
 <holder>Ericsson AB. All Rights Reserved.</holder>
 </copyright>
 <legalnotice>
@@ -43,7 +44,7 @@ limitations under the License.
 <file>diameter_transport.xml</file>
 </header>
 
-<module>diameter_transport</module>
+<module since="OTP R14B03">diameter_transport</module>
 <modulesummary>Diameter transport interface.</modulesummary>
 
 <description>
@@ -94,7 +95,7 @@ and has the binary() to send in its <c>bin</c> field.</p>
 <funcs>
 
 <func>
-<name>Mod:start({Type, Ref}, Svc, Config)
+<name since="OTP R14B03">Mod:start({Type, Ref}, Svc, Config)
          -> {ok, Pid}
           | {ok, Pid, LAddrs}
           | {error, Reason}</name>
@@ -174,10 +175,13 @@ its parent.</p>
 
 <taglist>
 
-<tag><c>{diameter, {send, &message;}}</c></tag>
+<tag><c>{diameter, {send, &message; | false}}</c></tag>
 <item>
 <p>
-An outbound Diameter message.</p>
+An outbound Diameter message.
+The atom <c>false</c> can only be received when request
+acknowledgements have been requests: see the <c>ack</c> message
+below.</p>
 </item>
 
 <tag><c>{diameter, {close, Pid}}</c></tag>
@@ -246,6 +250,27 @@ A <c>LocalAddr</c> list has the same semantics as one returned from
 &start;.</p>
 </item>
 
+<tag><c>{diameter, ack}</c></tag>
+<item>
+<p>
+Request acknowledgements of unanswered requests.
+A transport process should send this once before passing incoming
+Diameter messages into diameter.
+As a result, every Diameter request passed into diameter with a
+<c>recv</c> message (below) will be answered with a
+<c>send</c> message (above), either a &message; for the transport
+process to send or the atom <c>false</c> if the request has been
+discarded or otherwise not answered.</p>
+
+<p>
+This is to allow a transport process to keep count of the number
+of incoming request messages that have not yet been answered or
+discarded, to allow it to regulate the amount of incoming traffic.
+Both diameter_tcp and diameter_sctp request acknowledgements when a
+<c>message_cb</c> is configured, turning send/recv message into
+callbacks that can be used to regulate traffic.</p>
+</item>
+
 <tag><c>{diameter, {recv, &message;}}</c></tag>
 <item>
 <p>
diff --git a/lib/diameter/doc/src/notes.xml b/lib/diameter/doc/src/notes.xml
index 4bfc98de40..5777225ae7 100644
--- a/lib/diameter/doc/src/notes.xml
+++ b/lib/diameter/doc/src/notes.xml
@@ -43,6 +43,41 @@ first.</p>
 
 <!-- ===================================================================== -->
 
+<section><title>diameter 2.2</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Fix failure of incoming answer message with faulty
+	    Experimental-Result-Code. Failure to decode the AVP
+	    resulted in an uncaught exception, with no no
+	    handle_answer/error callback as a consequence.</p>
+          <p>
+	    Own Id: OTP-15569 Aux Id: ERIERL-302 </p>
+        </item>
+      </list>
+    </section>
+
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+          <p>
+	    Add spawn_opt MFA configuration to allow a callback to
+	    spawn a handler process for an incoming Diameter request
+	    on an an arbitrary node. Module diameter_dist provides a
+	    route_session/2 that can be used to distribute requests
+	    based on Session-Id, although this module is currently
+	    only documented in the module itself and may change.</p>
+          <p>
+	    Own Id: OTP-15398</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>diameter 2.1.6</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
@@ -78,6 +113,24 @@ first.</p>
 
 </section>
 
+<section><title>diameter 2.1.4.1</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Fix failure of incoming answer message with faulty
+	    Experimental-Result-Code. Failure to decode the AVP
+	    resulted in an uncaught exception, with no no
+	    handle_answer/error callback as a consequence.</p>
+          <p>
+	    Own Id: OTP-15569 Aux Id: ERIERL-302 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>diameter 2.1.4</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
diff --git a/lib/diameter/src/base/diameter.erl b/lib/diameter/src/base/diameter.erl
index b90b794611..7f172e1fa1 100644
--- a/lib/diameter/src/base/diameter.erl
+++ b/lib/diameter/src/base/diameter.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2010-2017. All Rights Reserved.
+%% Copyright Ericsson AB 2010-2019. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -365,7 +365,7 @@ call(SvcName, App, Message) ->
     | {connect_timer, 'Unsigned32'()}
     | {watchdog_timer, 'Unsigned32'() | {module(), atom(), list()}}
     | {watchdog_config, [{okay|suspect, non_neg_integer()}]}
-    | {spawn_opt, list()}.
+    | {spawn_opt, list() | mfa()}.
 
 %% Options passed to start_service/2
 
diff --git a/lib/diameter/src/base/diameter_callback.erl b/lib/diameter/src/base/diameter_callback.erl
index d04a416bef..3bcf550cd8 100644
--- a/lib/diameter/src/base/diameter_callback.erl
+++ b/lib/diameter/src/base/diameter_callback.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2010-2017. All Rights Reserved.
+%% Copyright Ericsson AB 2010-2019. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -70,7 +70,7 @@
 
 -module(diameter_callback).
 
-%% Default callbacks when no aleternate is specified.
+%% Default callbacks when no alternate is specified.
 -export([peer_up/3,
          peer_down/3,
          pick_peer/4,
diff --git a/lib/diameter/src/base/diameter_dist.erl b/lib/diameter/src/base/diameter_dist.erl
new file mode 100644
index 0000000000..5c29ea95a4
--- /dev/null
+++ b/lib/diameter/src/base/diameter_dist.erl
@@ -0,0 +1,525 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2019. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+-module(diameter_dist).
+
+-behaviour(gen_server).
+
+%%
+%% Implements callbacks that can be configured as a spawn_opt
+%% transport configuration, to be able to distribute incoming Diameter
+%% requests to handler processes (local or remote) in various ways.
+%%
+
+%% spawn_opt callbacks
+-export([spawn_local/2,
+         spawn_local/1,
+         route_session/2,
+         route_session/1]).
+
+%% signal availability for handling incoming requests to route_sesssion/2
+-export([attach/1,
+         detach/1]).
+
+%% consistent hashing
+-export([hash/3,   %% for use as default MFA in route_session/2 options map
+         hash/2]). %% arbitrary key/values
+
+-include_lib("diameter/include/diameter.hrl").
+
+%% server start
+-export([start_link/0]).
+
+%% gen_server callbacks
+-export([init/1,
+         handle_info/2,
+         handle_cast/2,
+         handle_call/3,
+         code_change/3,
+         terminate/2]).
+
+-type request() :: tuple().  %% callback argument from diameter_traffic
+
+-define(SERVER, ?MODULE).  %% server monitoring node connections
+
+%% Maps a node name binary to the corresponding atom. Used by
+%% route_session/2 to map the optional value of a Session-Id to
+%% node().
+-define(NODE_TABLE, diameter_dist_node).
+
+%% Maps a diameter:service_name() to a node() that has called attach/1
+%% to declare its willingness to handle incoming requests for the
+%% service. Use by route_session/2 in case the optional value mapping
+%% has failed.
+-define(SERVICE_TABLE, diameter_dist_service).
+
+-define(B(A), atom_to_binary(A, utf8)).
+-define(ORCOND(List), list_to_tuple(['orelse', false | List])).
+-define(HASH(T), erlang:phash2(T, 16#100000000)).
+
+%% spawn_local/2
+%%
+%% Callback that is equivalent to an options list. That is, the
+%% following are equivalent when passed as options to
+%% diameter:add_transport/2.
+%%
+%%   {spawn_opt, Opts}
+%%   {spawn_opt, {diameter_dist, spawn_local, [Opts]}}
+
+-spec spawn_local(ReqT :: request(), Opts :: list())
+   -> pid().
+
+spawn_local(ReqT, Opts) ->
+    spawn_opt(diameter_traffic, request, [ReqT], Opts).
+
+%% spawn_local/1
+
+spawn_local(ReqT) ->
+    spawn_local(ReqT, []).
+
+%% route_session/2
+%%
+%% Callback that maps the Session-Id of an incoming request to a
+%% handler node.
+%%
+%% With an options list, maps an id whose optional value is the name
+%% of a connected node to the same node, to handle the case that the
+%% session id has been returned from diameter:session_id/1; otherwise
+%% to a node that has called diameter_dist:attach/1 using the
+%% consistent hashing provided by hash/3, or to the local node() if a
+%% session id could not be extracted or there are no attached nodes. A
+%% handler process is spawned on the selected node using
+%% erlang:spawn_opt/4.
+%%
+%% Different behaviour can be configured by supplying an options map
+%% of the following form:
+%%
+%%   #{search => non_neg_integer(),
+%%     id => [binary()],
+%%     default => discard | local | mfa(),
+%%     dispatch => list() | mfa()}
+%%
+%% The search member limits the number of AVPs that are examined in
+%% the message (from the front), to avoid searching entire message in
+%% case it's known that peers follow RFC 6733's recommendation that
+%% Session-Id be placed at the head of a message. The default is to
+%% search the entire message.
+%%
+%% The id member restricts the optional value mapping to session ids
+%% whose DiamterIdentity is one of those specified. Set this to the
+%% list of Diameter identities advertised by the service in question
+%% (typically one) to ensure that only locally generated session ids
+%% are mapped; or to the empty list to disable the mapping.
+%%
+%% The default member determines where to handle a message whose
+%% Session-Id isn't found or whose optional value isn't mapped to the
+%% name of a connected node. The atom local says the local node, an
+%% MFA is invoked on Session-Id | false, the name of the diameter
+%% service, and the message binary, and should return either a node()
+%% or false to discard the message. Defaults to {diameter_dist, hash, []}.
+%%
+%% The dispatch member determines how the pid() of the request handler
+%% process is retrieved. An MFA is applied to a previously selected
+%% node(), and the module, function, and arguments list to apply in
+%% the handler process to handle the request, the MFA being supplied
+%% by diameter, and returns pid() | discard. A list is equivalent to
+%% {erlang, spawn_opt, []}. Defaults to [].
+%%
+%% This can be used with search = 0 to route on something other than
+%% Session-Id, but this is probably no simpler than just implementing
+%% an own spawn_opt callback. (Except with the default dispatch possibly.)
+%%
+%% Note that if the peer is also implemented with OTP diameter and
+%% generating session ids with diameter:session_id/1 then
+%% route_session/2 can map an optional value to a local node that
+%% happens to have the same name as one of the peer's nodes. This
+%% could lead to an uneven distribution; for example, if the peer
+%% nodes are a subset of the local nodes. In practice, it's typically
+%% known if it's peers or the local node originating sessions; if the
+%% former then setting id = [] disables the optional value mapping, if
+%% the latter then setting default = local disables the hashing.
+-spec route_session(ReqT :: request(), Opts)
+   -> discard
+    | pid()
+ when Opts :: pos_integer()   %% aka #{search => N}
+            | list()          %% aka #{dispatch => Opts}
+            | #{search => non_neg_integer(), %% limit number of examined AVPs
+                id => [binary()],   %% restrict optional value map on DiamIdent
+                default => local    %% handle locally
+                         | discard
+                         | mfa(),   %% return node() | false
+                dispatch => list()  %% spawn options
+                          | mfa()}. %% (Node, M, F, A) -> pid() | discard
+
+route_session(ReqT, Opts) ->
+    {_, Bin} = Info = diameter_traffic:request_info(ReqT),
+    Sid = session_id(avps(Bin), search(Opts)),
+    Node = default(node_of_session_id(Sid, Opts), Sid, Opts, Info),
+    dispatch(Node, ReqT, dispatch(Opts)).
+
+%% avps/1
+
+avps(<<_:20/binary, Bin/binary>>) ->
+    Bin;
+
+avps(_) ->
+    false.
+
+%% dispatch/3
+
+dispatch(false, _, _) ->
+    discard;
+
+dispatch(Node, ReqT, {M,F,A}) ->
+    apply(M, F, [Node, diameter_traffic, request, [ReqT] | A]);
+
+dispatch(Node, ReqT, Opts) ->
+    spawn_opt(Node, diameter_traffic, request, [ReqT], Opts).
+
+%% route_session/1
+
+route_session(ReqT) ->
+    route_session(ReqT, []).
+
+%% node_of_session_id/2
+%%
+%% Return the node name encoded as optional value in a Session-Id,
+%% assuming the id has been created with diameter:session_id/0. Lookup
+%% the node name to ensure we don't convert arbitrary binaries to
+%% atom.
+
+node_of_session_id([Id, _, _, Bin], #{id := Ids}) ->
+    lists:member(Id, Ids) andalso nodemap(Bin);
+
+node_of_session_id([_, _, _, Bin], _) ->
+    nodemap(Bin);
+
+node_of_session_id(_, _) ->
+    false.
+
+%% nodemap/1
+
+nodemap(Bin) ->
+    try
+        ets:lookup_element(?NODE_TABLE, Bin, 2)
+    catch
+        error: badarg -> false
+    end.
+
+%% session_id/2
+
+session_id(_, 0) ->  %% give up
+    false;
+
+%% Session-Id = Command Code 263, V-bit = 0.
+session_id(<<263:32, 0:1, _:7, Len:24, _/binary>> = Bin, _) ->
+    case Bin of
+        <<Avp:Len/binary, _/binary>> ->
+            <<_:8/binary, Sid/binary>> = Avp,
+            split(Sid);
+        _ ->
+            false
+    end;
+
+%% Jump to the next AVP. This is potentially costly for a message with
+%% many AVPs and no Session-Id, which an attacker is prone to send.
+%% 8.8 or RFC 6733 says that Session-Id SHOULD (but not MUST) appear
+%% immediately following the Diameter Header, so there is no
+%% guarantee.
+session_id(<<_:40, Len:24, _/binary>> = Bin, N) ->
+    Pad = (4 - (Len rem 4)) rem 4,
+    case Bin of
+        <<_:Len/binary, _:Pad/binary, Rest/binary>> ->
+            session_id(Rest, if N == infinity -> N; true -> N-1 end);
+        _ ->
+            false
+    end;
+
+session_id(_, _) ->
+    false.
+
+%% split/1
+%%
+%% Split a Session-Id at no more than three semicolons: the optional
+%% value (if any) follows the third. binary:split/2 does better than
+%% matching character by character, especially when the pattern is
+%% compiled.
+
+split(Bin) ->
+    split(3, Bin, pattern()).
+
+%% split/3
+
+split(0, Bin, _) ->
+    [Bin];
+
+split(N, Bin, Pattern) ->
+    [H|T] = binary:split(Bin, Pattern),
+    [H | case T of
+             [] ->
+                 T;
+             [Rest] ->
+                 split(N-1, Rest, Pattern)
+         end].
+
+%% pattern/0
+%%
+%% Since this is being called in a watchdog process, compile the
+%% pattern once and maintain it in the process dictionary.
+
+pattern() ->
+    case get(?MODULE) of
+        undefined ->
+            CP = binary:compile_pattern(<<$;>>), %% tuple
+            put(?MODULE, CP),
+            CP;
+        CP ->
+            CP
+    end.
+
+%% dispatch/1
+
+dispatch(#{} = Opts) ->
+    maps:get(dispatch, Opts, []);
+
+dispatch(Opts)
+  when is_list(Opts) ->
+    Opts;
+
+dispatch(_) ->
+    [].
+
+%% search/1
+%%
+%% Bound number of AVPs examined when looking for Session-Id.
+
+search(#{search := N})
+  when is_integer(N), 0 =< N ->
+    N;
+
+search(N)
+  when is_integer(N), 0 =< N ->
+    N;
+
+search(_) ->
+    infinity.
+
+%% default/3
+%%
+%% Choose a node when Session-Id lookup has failed.
+
+default(false, _, #{default := discard}, _) ->
+    false;
+
+default(false, _, #{default := local}, _) ->
+    node();
+
+default(false, Sid, #{default := {M,F,A}}, Info) ->
+    {ServiceName, Bin} = Info,
+    apply(M, F, [Sid, ServiceName, Bin | A]);  %% node() | false
+
+default(false, Sid, _, Info) -> %% aka {?MODULE, hash, []}
+    {ServiceName, Bin} = Info,
+    hash(Sid, ServiceName, Bin);
+
+default(Node, _, _, _) ->
+    Node.
+
+%% ===========================================================================
+
+%% hash/3
+%%
+%% Consistent hashing of Session-Id to an attached node, or the local
+%% node if Session-Id = false or no attached nodes.
+
+hash(Sid, ServiceName, _) ->
+    case false /= Sid andalso attached(ServiceName) of
+        [_|_] = Nodes ->
+            hash(Sid, Nodes);
+        _ ->
+            node()
+    end.
+
+%% hash/2
+%%
+%% Consistent hashing on arbitrary key/values. Returns false if the
+%% list is empty.
+
+%% No key or no values.
+hash(_, []) ->
+    false;
+
+%% Not much choice.
+hash(_, [Value]) ->
+    Value;
+
+%% Hash on a circle and choose the closest predecessor.
+hash(Key, Values) ->
+    Hash = ?HASH(Key),
+    tl(lists:foldl(fun(V,A) ->
+                           choose(Hash, [?HASH({Key, V}) | V], A)
+                   end,
+                   false,  %% < list()
+                   Values)).
+
+%% choose/3
+
+choose(Hash, [Hash1 | _] = T, [Hash2 | _])
+  when Hash1 =< Hash, Hash < Hash2 ->
+    T;
+
+choose(Hash, [Hash1 | _], [Hash2 | _] = T)
+  when Hash2 =< Hash, Hash < Hash1 ->
+    T;
+
+choose(_, T1, T2) ->
+    max(T1, T2).
+
+%% ===========================================================================
+
+%% attach/1
+%%
+%% Register the local node as a handler of incoming requests for the
+%% specified services when using the route_session/2 spawn_opt
+%% callback.
+
+attach(ServiceNames) ->
+    abcast({attach, node(), ServiceNames}).
+
+%% detach/1
+%%
+%% Deregister the local node as a handler of incoming requests.
+
+detach(ServiceNames) ->
+    abcast({detach, node(), ServiceNames}).
+
+%% abcast/1
+
+abcast(T) ->
+    gen_server:abcast([node() | nodes()], ?SERVER, T),
+    ok.
+
+%% attached/1
+
+attached(ServiceName) ->
+    try
+        ets:lookup_element(?SERVICE_TABLE, ServiceName, 2)
+    catch
+        error: badarg -> []
+    end.
+
+%% cast/2
+
+cast(Node, T) ->
+    gen_server:cast({?SERVER, Node}, T).
+
+%% attach/2
+
+attach(Node, S) ->
+    case sets:to_list(S) of
+        [] ->
+            ok;
+        Services ->
+            cast(Node, {attach, node(), Services})
+    end.
+
+%% ===========================================================================
+
+start_link() ->
+    gen_server:start_link({local, ?SERVER}, ?MODULE, _Args = [], _Opts  = []).
+
+%% init/1
+%%
+%% Maintain [node() | nodes()] in a table that maps from binary-valued
+%% names, so we can lookup the corresponding atoms rather than convert
+%% binaries that aren't necessarily node names.
+
+init([]) ->
+    ets:new(?NODE_TABLE,    [set, named_table]),
+    ets:new(?SERVICE_TABLE, [bag, named_table]),
+    ok = net_kernel:monitor_nodes(true, [{node_type, all}, nodedown_reason]),
+    ets:insert(?NODE_TABLE, [{?B(N), N} || N <- [node() | nodes()]]),
+    abcast({attach, node()}),
+    {ok, sets:new()}.
+
+%% handle_call/3
+
+handle_call(_, _From, S) ->
+    {reply, nok, S}.
+
+%% handle_cast/2
+
+%% Remote node is asking which services the local node wants to handle.
+handle_cast({attach, Node}, S)
+  when Node /= node() ->
+    attach(Node, S),
+    {noreply, S};
+
+%% Node wants to handle incoming requests ...
+handle_cast({attach, Node, ServiceNames}, S) ->
+    ets:insert(?SERVICE_TABLE, [{N, Node} || N <- ServiceNames]),
+    {noreply, case node() of
+                  Node ->
+                      sets:union(S, sets:from_list(ServiceNames));
+                  _ ->
+                      S
+              end};
+
+%% ... or not.
+handle_cast({detach, Node, ServiceNames}, S) ->
+    ets:select_delete(?SERVICE_TABLE, [{{'$1', Node},
+                                        [?ORCOND([{'==', '$1', {const, N}}
+                                                  || N <- ServiceNames])],
+                                        [true]}]),
+    {noreply, case node() of
+                  Node ->
+                      sets:subtract(S, sets:from_list(ServiceNames));
+                  _ ->
+                      S
+              end};
+
+handle_cast(_, S) ->
+    {noreply, S}.
+
+%% handle_info/2
+
+handle_info({nodeup, Node, _}, S) ->
+    ets:insert(?NODE_TABLE, {?B(Node), Node}),
+    cast(Node, {attach, node()}),  %% ask which services remote node handles
+    attach(Node, S),               %% say which service local node handles
+    {noreply, S};
+
+handle_info({nodedown, Node, _}, S) ->
+    ets:delete(?NODE_TABLE, ?B(Node)),
+    ets:select_delete(?SERVICE_TABLE, [{{'_', Node}, [], [true]}]),
+    {noreply, S};
+
+handle_info(_, S) ->
+    {noreply, S}.
+
+%% terminate/2
+
+terminate(_, _) ->
+    ok.
+
+%% code_change/3
+
+code_change(_OldVsn, State, _Extra) ->
+    {ok, State}.
diff --git a/lib/diameter/src/base/diameter_gen.erl b/lib/diameter/src/base/diameter_gen.erl
index d110a3015e..564448de48 100644
--- a/lib/diameter/src/base/diameter_gen.erl
+++ b/lib/diameter/src/base/diameter_gen.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2010-2018. All Rights Reserved.
+%% Copyright Ericsson AB 2010-2019. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
diff --git a/lib/diameter/src/base/diameter_misc_sup.erl b/lib/diameter/src/base/diameter_misc_sup.erl
index 343688be23..fec5a41b5c 100644
--- a/lib/diameter/src/base/diameter_misc_sup.erl
+++ b/lib/diameter/src/base/diameter_misc_sup.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2010-2016. All Rights Reserved.
+%% Copyright Ericsson AB 2010-2019. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -35,6 +35,7 @@
                    diameter_stats,     %% statistics counter management
                    diameter_reg,       %% service/property publishing
                    diameter_peer,      %% remote peer manager
+                   diameter_dist,      %% request distribution
                    diameter_config]).  %% configuration/restart
 
 %% start_link/0
diff --git a/lib/diameter/src/base/diameter_traffic.erl b/lib/diameter/src/base/diameter_traffic.erl
index d2856ae530..8423e30269 100644
--- a/lib/diameter/src/base/diameter_traffic.erl
+++ b/lib/diameter/src/base/diameter_traffic.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2013-2017. All Rights Reserved.
+%% Copyright Ericsson AB 2013-2019. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -42,8 +42,12 @@
          peer_up/1,
          peer_down/1]).
 
+%% towards diameter_dist
+-export([request_info/1]).
+
 %% internal
 -export([send/1,    %% send from remote node
+         request/1, %% process request in handler process
          init/1]).  %% monitor process start
 
 -include_lib("diameter/include/diameter.hrl").
@@ -232,7 +236,7 @@ incr_rc(Dir, Pkt, TPid, MsgDict, AppDict, Dict0) ->
 -spec receive_message(pid(), Route, #diameter_packet{}, module(), RecvData)
    -> pid()     %% request handler
     | boolean() %% answer, known request or not
-    | discard   %% request discarded by MFA
+    | discard   %% request discarded
  when Route :: {Handler, RequestRef, TPid}
              | Ack,
       RecvData :: {[SpawnOpt], #recvdata{}},
@@ -252,7 +256,8 @@ receive_message(TPid, Route, Pkt, Dict0, RecvData) ->
 recv(true, Ack, TPid, Pkt, Dict0, T)
   when is_boolean(Ack) ->
     {Opts, RecvData} = T,
-    spawn_request(Ack, TPid, Pkt, Dict0, RecvData, Opts);
+    AppT = find_app(TPid, Pkt, RecvData),
+    ack(Ack, TPid, spawn_request(AppT, Opts, Ack, TPid, Pkt, Dict0, RecvData));
 
 %% ... answer to known request ...
 recv(false, {Pid, Ref, TPid}, _, Pkt, Dict0, _) ->
@@ -274,58 +279,73 @@ recv(false, false, TPid, Pkt, _, _) ->
     incr(TPid, {{unknown, 0}, recv, discarded}),
     false.
 
-%% spawn_request/6
+%% spawn_request/7
+
+spawn_request(false, _, _, _, _, _, _) ->  %% no transport
+    discard;
 
-%% An MFA should return a pid() or the atom 'discard'. The latter
-%% results in an acknowledgment back to the transport process when
-%% appropriate, to ensure that send/recv callbacks can count
-%% outstanding requests. Acknowledgement is implicit if the
+%% An MFA should return the pid() of a process in which the argument
+%% fun in applied, or the atom 'discard' if the fun is not applied.
+%% The latter results in an acknowledgment back to the transport
+%% process when appropriate, to ensure that send/recv callbacks can
+%% count outstanding requests. Acknowledgement is implicit if the
 %% handler process dies (in a handle_request callback for example).
-spawn_request(Ack, TPid, Pkt, Dict0, RecvData, {M,F,A}) ->
-    ReqF = fun() ->
-                   ack(Ack, TPid, recv_request(Ack, TPid, Pkt, Dict0, RecvData))
-           end,
-    ack(Ack, TPid, apply(M, F, [ReqF | A]));
+spawn_request(AppT, {M,F,A}, Ack, TPid, Pkt, Dict0, RecvData) ->
+    %% Term to pass to request/1 in an appropriate process. Module
+    %% diameter_dist implements callbacks.
+    ReqT = {Pkt, AppT, Ack, TPid, Dict0, RecvData},
+    apply(M, F, [ReqT | A]);
 
 %% A spawned process acks implicitly when it dies, so there's no need
 %% to handle 'discard'.
-spawn_request(Ack, TPid, Pkt, Dict0, RecvData, Opts) ->
+spawn_request(AppT, Opts, Ack, TPid, Pkt, Dict0, RecvData) ->
     spawn_opt(fun() ->
-                      recv_request(Ack, TPid, Pkt, Dict0, RecvData)
+                      recv_request(Ack, TPid, Pkt, Dict0, RecvData, AppT)
               end,
               Opts).
 
+%% request_info/1
+%%
+%% Limited request information for diameter_dist.
+
+request_info({Pkt, _AppT, _Ack, _TPid, _Dict0, RecvData} = _ReqT) ->
+    {RecvData#recvdata.service_name, Pkt#diameter_packet.bin}.
+
+%% request/1
+%%
+%% Called from a handler process chosen by a transport spawn_opt MFA
+%% to process an incoming request.
+
+request({Pkt, AppT, Ack, TPid, Dict0, RecvData} = _ReqT) ->
+    ack(Ack, TPid, recv_request(Ack, TPid, Pkt, Dict0, RecvData, AppT)).
+
 %% ack/3
 
 ack(Ack, TPid, RC) ->
-    RC == discard andalso Ack andalso (TPid ! {send, false}),
+    RC == discard
+        andalso Ack
+        andalso (TPid ! {send, false}),
     RC.
 
 %% ---------------------------------------------------------------------------
-%% recv_request/5
+%% recv_request/6
 %% ---------------------------------------------------------------------------
 
 -spec recv_request(Ack :: boolean(),
                    TPid :: pid(),
                    #diameter_packet{},
                    Dict0 :: module(),
-                   #recvdata{})
+                   #recvdata{},
+                   AppT :: {#diameter_app{}, #diameter_caps{}}
+                         | #diameter_caps{}) %% no suitable app
    -> ok        %% answer was sent
-    | discard   %% or not
-    | false.    %% no transport
-
-recv_request(Ack,
-             TPid,
-             #diameter_packet{header = #diameter_header{application_id = Id}}
-             = Pkt,
-             Dict0,
-             #recvdata{peerT = PeerT,
-                       apps = Apps,
-                       counters = Count}
-             = RecvData) ->
+    | discard.  %% or not
+
+recv_request(Ack, TPid, Pkt, Dict0, RecvData, AppT) ->
     Ack andalso (TPid ! {handler, self()}),
-    case diameter_service:find_incoming_app(PeerT, TPid, Id, Apps) of
+    case AppT of
         {#diameter_app{id = Aid, dictionary = AppDict} = App, Caps} ->
+            Count = RecvData#recvdata.counters,
             Count andalso incr(recv, Pkt, TPid, AppDict),
             DecPkt = decode(Aid, AppDict, RecvData, Pkt),
             Count andalso incr_error(recv, DecPkt, TPid, AppDict),
@@ -349,11 +369,20 @@ recv_request(Ack,
                         Dict0,
                         RecvData,
                         DecPkt,
-                        [[]]);
-        false = No ->  %% transport has gone down
-            No
+                        [[]])
     end.
 
+%% find_app/3
+%%
+%% Lookup the application of a received Diameter request on the node
+%% on which it's received.
+
+find_app(TPid,
+         #diameter_packet{header = #diameter_header{application_id = Id}},
+         #recvdata{peerT = PeerT,
+                   apps = Apps}) ->
+    diameter_service:find_incoming_app(PeerT, TPid, Id, Apps).
+
 %% decode/4
 
 decode(Id, Dict, #recvdata{codec = Opts}, Pkt) ->
@@ -1925,6 +1954,8 @@ get_avp(Dict, Name, [#diameter_header{} | Avps]) ->
         A = find_avp(Code, Vid, Avps),
         avp_decode(Dict, Name, ungroup(A))
     catch
+        {diameter_gen, _} ->  %% faulty Grouped AVP
+            undefined;
         error: _ ->
             undefined
     end;
diff --git a/lib/diameter/src/diameter.appup.src b/lib/diameter/src/diameter.appup.src
index 51830f5276..52263633fb 100644
--- a/lib/diameter/src/diameter.appup.src
+++ b/lib/diameter/src/diameter.appup.src
@@ -2,7 +2,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2010-2018. All Rights Reserved.
+%% Copyright Ericsson AB 2010-2019. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -59,7 +59,9 @@
   {"2.1.2",   [{restart_application, diameter}]},  %% 20.1.3
   {"2.1.3",   [{restart_application, diameter}]},  %% 20.2
   {"2.1.4",   [{restart_application, diameter}]},  %% 20.3
-  {"2.1.5",   [{update, diameter_peer_fsm}]}       %% 21.0
+  {"2.1.4.1", [{restart_application, diameter}]},  %% 20.3.8.19
+  {"2.1.5",   [{restart_application, diameter}]},  %% 21.0
+  {"2.1.6",   [{restart_application, diameter}]}   %% 21.1
  ],
  [
   {"0.9",     [{restart_application, diameter}]},
@@ -100,6 +102,8 @@
   {"2.1.2",   [{restart_application, diameter}]},
   {"2.1.3",   [{restart_application, diameter}]},
   {"2.1.4",   [{restart_application, diameter}]},
-  {"2.1.5",   [{update, diameter_peer_fsm}]}
+  {"2.1.4.1", [{restart_application, diameter}]},
+  {"2.1.5",   [{restart_application, diameter}]},
+  {"2.1.6",   [{restart_application, diameter}]}
  ]
 }.
diff --git a/lib/diameter/src/modules.mk b/lib/diameter/src/modules.mk
index bb86de016a..d16292bb88 100644
--- a/lib/diameter/src/modules.mk
+++ b/lib/diameter/src/modules.mk
@@ -1,7 +1,7 @@
 
 # %CopyrightBegin%
 #
-# Copyright Ericsson AB 2010-2017. All Rights Reserved.
+# Copyright Ericsson AB 2010-2019. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -40,6 +40,7 @@ RT_MODULES = \
 	base/diameter_config \
 	base/diameter_config_sup \
 	base/diameter_codec \
+	base/diameter_dist \
 	base/diameter_gen \
 	base/diameter_lib \
 	base/diameter_misc_sup \
diff --git a/lib/diameter/src/transport/diameter_tcp.erl b/lib/diameter/src/transport/diameter_tcp.erl
index da059fa7d6..e5e766d2a0 100644
--- a/lib/diameter/src/transport/diameter_tcp.erl
+++ b/lib/diameter/src/transport/diameter_tcp.erl
@@ -92,9 +92,9 @@
 
 -type connect_option() :: {raddr, inet:ip_address()}
                         | {rport, pos_integer()}
-                        | {ssl_options, true | [ssl:connect_option()]}
+                        | {ssl_options, true | [ssl:tls_client_option()]}
                         | option()
-                        | ssl:connect_option()
+                        | ssl:tls_client_option()
                         | gen_tcp:connect_option().
 
 -type match() :: inet:ip_address()
@@ -102,9 +102,9 @@
                | [match()].
 
 -type listen_option() :: {accept, match()}
-                       | {ssl_options, true | [ssl:listen_option()]}
+                       | {ssl_options, true | [ssl:tls_server_option()]}
                        | option()
-                       | ssl:listen_option()
+                       | ssl:tls_server_option()
                        | gen_tcp:listen_option().
 
 -type option() :: {port, non_neg_integer()}
diff --git a/lib/diameter/test/diameter_dist_SUITE.erl b/lib/diameter/test/diameter_dist_SUITE.erl
new file mode 100644
index 0000000000..b2e4c35b9a
--- /dev/null
+++ b/lib/diameter/test/diameter_dist_SUITE.erl
@@ -0,0 +1,332 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2019. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+%%
+%% Tests of traffic between two Diameter nodes, the server being
+%% spread across three Erlang nodes.
+%%
+
+-module(diameter_dist_SUITE).
+
+-export([suite/0,
+         all/0]).
+
+%% testcases
+-export([enslave/1, enslave/0,
+         ping/1,
+         start/1,
+         connect/1,
+         send/1,
+         stop/1, stop/0]).
+
+%% diameter callbacks
+-export([peer_up/3,
+         peer_down/3,
+         pick_peer/4,
+         prepare_request/3,
+         prepare_retransmit/3,
+         handle_answer/4,
+         handle_error/4,
+         handle_request/3]).
+
+-export([call/1]).
+
+-include("diameter.hrl").
+-include("diameter_gen_base_rfc6733.hrl").
+
+%% ===========================================================================
+
+-define(util, diameter_util).
+
+-define(CLIENT, 'CLIENT').
+-define(SERVER, 'SERVER').
+-define(REALM, "erlang.org").
+-define(DICT, diameter_gen_base_rfc6733).
+-define(ADDR, {127,0,0,1}).
+
+%% Config for diameter:start_service/2.
+-define(SERVICE(Host),
+        [{'Origin-Host', Host ++ [$.|?REALM]},
+         {'Origin-Realm', ?REALM},
+         {'Host-IP-Address', [?ADDR]},
+         {'Vendor-Id', 12345},
+         {'Product-Name', "OTP/diameter"},
+         {'Auth-Application-Id', [?DICT:id()]},
+         {'Origin-State-Id', origin()},
+         {spawn_opt, {diameter_dist, route_session, [#{id => []}]}},
+         {sequence, fun sequence/0},
+         {string_decode, false},
+         {application, [{dictionary, ?DICT},
+                        {module, ?MODULE},
+                        {request_errors, callback},
+                        {answer_errors, callback}]}]).
+
+-define(SUCCESS, 2001).
+-define(BUSY,    3004).
+-define(LOGOUT,  ?'DIAMETER_BASE_TERMINATION-CAUSE_LOGOUT').
+-define(MOVED,   ?'DIAMETER_BASE_TERMINATION-CAUSE_USER_MOVED').
+-define(TIMEOUT, ?'DIAMETER_BASE_TERMINATION-CAUSE_SESSION_TIMEOUT').
+
+-define(L, atom_to_list).
+-define(A, list_to_atom).
+
+%% The order here is significant and causes the server to listen
+%% before the clients connect. The server listens on the first node,
+%% and distributes requests to the other two.
+-define(NODES, [{server0, ?SERVER},
+                {server1, ?SERVER},
+                {server2, ?SERVER},
+                {client, ?CLIENT}]).
+
+%% Options to ct_slave:start/2.
+-define(TIMEOUTS, [{T, 15000} || T <- [boot_timeout,
+                                       init_timeout,
+                                       start_timeout]]).
+
+%% ===========================================================================
+
+suite() ->
+    [{timetrap, {seconds, 60}}].
+
+all() ->
+    [enslave,
+     ping,
+     start,
+     connect,
+     send,
+     stop].
+
+%% ===========================================================================
+%% start/stop testcases
+
+%% enslave/1
+%%
+%% Start four slave nodes, three to implement a Diameter server,
+%% one to implement a client.
+
+enslave() ->
+    [{timetrap, {seconds, 30*length(?NODES)}}].
+
+enslave(Config) ->
+    Here = filename:dirname(code:which(?MODULE)),
+    Ebin = filename:join([Here, "..", "ebin"]),
+    Dirs = [Here, Ebin],
+    Nodes = [{N,S} || {M,S} <- ?NODES, N <- [slave(M, Dirs)]],
+    ?util:write_priv(Config, nodes, [{N,S} || {{N,ok},S} <- Nodes]),
+    [] = [{T,S} || {{_,E} = T, S} <- Nodes, E /= ok].
+
+slave(Name, Dirs) ->
+    add_pathsa(Dirs, ct_slave:start(Name, ?TIMEOUTS)).
+
+add_pathsa(Dirs, {ok, Node}) ->
+    {Node, rpc:call(Node, code, add_pathsa, [Dirs])};
+add_pathsa(_, No) ->
+    {No, error}.
+
+%% ping/1
+%%
+%% Ensure the server nodes are connected so that diameter_dist can attach.
+
+ping({S, Nodes}) ->
+    ?SERVER = S,
+    [N || {N,_} <- Nodes,
+          node() /= N,
+          pang <- [net_adm:ping(N)]];
+
+ping(Config) ->
+    Nodes = lists:droplast(?util:read_priv(Config, nodes)),
+    [] = [{N,RC} || {N,S} <- Nodes,
+                    RC <- [rpc:call(N, ?MODULE, ping, [{S,Nodes}])],
+                    RC /= []].
+
+%% start/1
+%%
+%% Start diameter services.
+
+start(SvcName)
+  when is_atom(SvcName) ->
+    ok = diameter:start(),
+    ok = diameter:start_service(SvcName, ?SERVICE((?L(SvcName))));
+
+start(Config) ->
+    Nodes = ?util:read_priv(Config, nodes),
+    [] = [{N,RC} || {N,S} <- Nodes,
+                    RC <- [rpc:call(N, ?MODULE, start, [S])],
+                    RC /= ok].
+
+sequence() ->
+    sequence(sname()).
+
+sequence(client) ->
+    {0,32};
+sequence(Server) ->
+    "server" ++ N = ?L(Server),
+    {list_to_integer(N), 30}.
+
+origin() ->
+    origin(sname()).
+
+origin(client) ->
+    99;
+origin(Server) ->
+    "server" ++ N = ?L(Server),
+    list_to_integer(N).
+
+%% connect/1
+%%
+%% Establish one connection from the client, terminated on the first
+%% server node, the others handling requests.
+
+connect({?SERVER, Config, [{Node, _} | _]}) ->
+    if Node == node() ->  %% server0
+            ?util:write_priv(Config, lref, {Node, ?util:listen(?SERVER, tcp)});
+       true ->
+            diameter_dist:attach([?SERVER])
+    end,
+    ok;
+
+connect({?CLIENT, Config, _}) ->
+    ?util:connect(?CLIENT, tcp, ?util:read_priv(Config, lref)),
+    ok;
+
+connect(Config) ->
+    Nodes = ?util:read_priv(Config, nodes),
+    [] = [{N,RC} || {N,S} <- Nodes,
+                    RC <- [rpc:call(N, ?MODULE, connect, [{S, Config, Nodes}])],
+                    RC /= ok].
+
+%% stop/1
+%%
+%% Stop the slave nodes.
+
+stop() ->
+    [{timetrap, {seconds, 30*length(?NODES)}}].
+
+stop(_Config) ->
+    [] = [{N,E} || {N,_} <- ?NODES,
+                   {error, _, _} = E <- [ct_slave:stop(N)]].
+
+%% ===========================================================================
+%% traffic testcases
+
+%% send/1
+%%
+%% Send 100 requests and ensure the node name sent as User-Name isn't
+%% the node terminating transport.
+
+send(Config) ->
+    send(Config, 100, dict:new()).
+
+%% send/2
+
+send(Config, 0, Dict) ->
+    [{Server0, _} | _] = ?util:read_priv(Config, nodes) ,
+    Node = atom_to_binary(Server0, utf8),
+    {false, _} = {dict:is_key(Node, Dict), dict:to_list(Dict)};
+
+send(Config, N, Dict) ->
+    #diameter_base_STA{'Result-Code' = ?SUCCESS,
+                       'User-Name' = [ServerNode]}
+        = send(Config, str(?LOGOUT)),
+    true = is_binary(ServerNode),
+    send(Config, N-1, dict:update_counter(ServerNode, 1, Dict)).
+
+%% ===========================================================================
+
+str(Cause) ->
+    #diameter_base_STR{'Destination-Realm'   = ?REALM,
+                       'Auth-Application-Id' = ?DICT:id(),
+                       'Termination-Cause'   = Cause}.
+
+%% send/2
+
+send(Config, Req) ->
+    {Node, _} = lists:last(?util:read_priv(Config, nodes)),
+    rpc:call(Node, ?MODULE, call, [Req]).
+
+%% call/1
+
+call(Req) ->
+    diameter:call(?CLIENT, ?DICT, Req, []).
+
+%% sname/0
+
+sname() ->
+    ?A(hd(string:tokens(?L(node()), "@"))).
+
+%% ===========================================================================
+%% diameter callbacks
+
+%% peer_up/3
+
+peer_up(_SvcName, _Peer, State) ->
+    State.
+
+%% peer_down/3
+
+peer_down(_SvcName, _Peer, State) ->
+    State.
+
+%% pick_peer/4
+
+pick_peer([Peer], [], ?CLIENT, _State) ->
+    {ok, Peer}.
+
+%% prepare_request/3
+
+prepare_request(Pkt, ?CLIENT, {_Ref, Caps}) ->
+    #diameter_packet{msg = Req}
+        = Pkt,
+    #diameter_caps{origin_host  = {OH, _},
+                   origin_realm = {OR, _}}
+        = Caps,
+    {send, Req#diameter_base_STR{'Origin-Host' = OH,
+                                 'Origin-Realm' = OR,
+                                 'Session-Id' = diameter:session_id(OH)}}.
+
+%% prepare_retransmit/3
+
+prepare_retransmit(_, ?CLIENT, _) ->
+    discard.
+
+%% handle_answer/5
+
+handle_answer(Pkt, _Req, ?CLIENT, _Peer) ->
+    #diameter_packet{msg = Rec, errors = []} = Pkt,
+    Rec.
+
+%% handle_error/5
+
+handle_error(Reason, _Req, ?CLIENT, _Peer) ->
+    {error, Reason}.
+
+%% handle_request/3
+
+handle_request(Pkt, ?SERVER, {_, Caps}) ->
+    #diameter_packet{msg = #diameter_base_STR{'Session-Id' = SId}}
+        = Pkt,
+    #diameter_caps{origin_host  = {OH, _},
+                   origin_realm = {OR, _}}
+        = Caps,
+    {reply, #diameter_base_STA{'Result-Code' = ?SUCCESS,
+                               'Session-Id' = SId,
+                               'Origin-Host' = OH,
+                               'Origin-Realm' = OR,
+                               'User-Name' = [atom_to_binary(node(), utf8)]}}.
diff --git a/lib/diameter/test/diameter_distribution_SUITE.erl b/lib/diameter/test/diameter_distribution_SUITE.erl
index 5146f68ff1..5fe02284ae 100644
--- a/lib/diameter/test/diameter_distribution_SUITE.erl
+++ b/lib/diameter/test/diameter_distribution_SUITE.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2013-2016. All Rights Reserved.
+%% Copyright Ericsson AB 2013-2019. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -76,6 +76,7 @@
          {share_peers, peers()},
          {use_shared_peers, peers()},
          {restrict_connections, false},
+         {spawn_opt, {diameter_dist, spawn_local, []}},
          {sequence, fun sequence/0},
          {application, [{dictionary, ?DICT},
                         {module, ?MODULE},
@@ -125,7 +126,7 @@ all() ->
 %% enslave/1
 %%
 %% Start four slave nodes, one to implement a Diameter server,
-%% two three to implement a client.
+%% three to implement a client.
 
 enslave() ->
     [{timetrap, {seconds, 30*length(?NODES)}}].
@@ -331,6 +332,8 @@ prepare_request(Pkt, ?CLIENT, {_Ref, Caps}, {_, client0}) ->
                                  'Origin-Realm' = OR,
                                  'Session-Id' = diameter:session_id(OH)}}.
 
+%% prepare_retransmit/4
+
 prepare_retransmit(Pkt, ?CLIENT, _, {_, client0}) ->
     #diameter_packet{msg = #diameter_base_STR{'Termination-Cause' = ?MOVED}}
         = Pkt,  %% assert
diff --git a/lib/diameter/test/diameter_pool_SUITE.erl b/lib/diameter/test/diameter_pool_SUITE.erl
index 97c16940ff..a36a4fa17a 100644
--- a/lib/diameter/test/diameter_pool_SUITE.erl
+++ b/lib/diameter/test/diameter_pool_SUITE.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2015-2017. All Rights Reserved.
+%% Copyright Ericsson AB 2015-2019. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -51,6 +51,7 @@
          {'Auth-Application-Id', [0]},  %% common
          {'Acct-Application-Id', [3]},  %% accounting
          {restrict_connections, false},
+         {spawn_opt, {diameter_dist, route_session, []}},
          {application, [{alias, common},
                         {dictionary, diameter_gen_base_rfc6733},
                         {module, diameter_callback}]},
diff --git a/lib/diameter/test/diameter_traffic_SUITE.erl b/lib/diameter/test/diameter_traffic_SUITE.erl
index 434aef01dd..47b00c25a2 100644
--- a/lib/diameter/test/diameter_traffic_SUITE.erl
+++ b/lib/diameter/test/diameter_traffic_SUITE.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2010-2018. All Rights Reserved.
+%% Copyright Ericsson AB 2010-2019. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -539,8 +539,7 @@ add_transports(Config) ->
                         ++ [{unordered, unordered()} || T == sctp],
                         [{capabilities_cb, fun capx/2},
                          {pool_size, 8}
-                         | server_apps()]
-                        ++ [{spawn_opt, {erlang, spawn, []}} || CS]),
+                         | server_apps()]),
     Cs = [?util:connect(CN,
                         [T, {sender, CS} | client_opts(T)],
                         LRef,
diff --git a/lib/diameter/test/modules.mk b/lib/diameter/test/modules.mk
index 0c73adca12..90b0a25d5f 100644
--- a/lib/diameter/test/modules.mk
+++ b/lib/diameter/test/modules.mk
@@ -1,7 +1,7 @@
 
 # %CopyrightBegin%
 #
-# Copyright Ericsson AB 2010-2017. All Rights Reserved.
+# Copyright Ericsson AB 2010-2019. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -31,6 +31,7 @@ MODULES = \
 	diameter_codec_test \
 	diameter_config_SUITE \
 	diameter_compiler_SUITE \
+	diameter_dist_SUITE \
 	diameter_distribution_SUITE \
 	diameter_dpr_SUITE \
 	diameter_event_SUITE \
diff --git a/lib/diameter/vsn.mk b/lib/diameter/vsn.mk
index 8c75c9e55e..a900e8f28e 100644
--- a/lib/diameter/vsn.mk
+++ b/lib/diameter/vsn.mk
@@ -17,5 +17,5 @@
 # %CopyrightEnd%
 
 APPLICATION  = diameter
-DIAMETER_VSN = 2.1.6
+DIAMETER_VSN = 2.2
 APP_VSN      = $(APPLICATION)-$(DIAMETER_VSN)$(PRE_VSN)
diff --git a/lib/edoc/doc/src/notes.xml b/lib/edoc/doc/src/notes.xml
index e818887eb8..145856bcaa 100644
--- a/lib/edoc/doc/src/notes.xml
+++ b/lib/edoc/doc/src/notes.xml
@@ -32,6 +32,22 @@
   <p>This document describes the changes made to the EDoc
     application.</p>
 
+<section><title>Edoc 0.10</title>
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+	    <p> Print a helpful message explaining that adding
+	    <c>{preprocess, true}</c> can help if reading a source
+	    file fails. </p>
+          <p>
+	    Own Id: OTP-15605 Aux Id: ERL-841 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Edoc 0.9.4</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
diff --git a/lib/edoc/src/edoc.erl b/lib/edoc/src/edoc.erl
index b641118c5d..e9d62d3283 100644
--- a/lib/edoc/src/edoc.erl
+++ b/lib/edoc/src/edoc.erl
@@ -578,7 +578,7 @@ read_source(Name, Opts0) ->
     Opts = expand_opts(Opts0),
     case read_source_1(Name, Opts) of
 	{ok, Forms} ->
-	    check_forms(Forms, Name),
+	    check_forms(Forms, Name, Opts),
 	    Forms;
 	{error, R} ->
 	    edoc_report:error({"error reading file '~ts'.",
@@ -692,13 +692,19 @@ fll([T | L], LastLine, Ts) ->
 fll(L, _LastLine, Ts) ->
     lists:reverse(L, Ts).
 
-check_forms(Fs, Name) ->
+check_forms(Fs, Name, Opts) ->
     Fun = fun (F) ->
 	     case erl_syntax:type(F) of
 		 error_marker ->
 		     case erl_syntax:error_marker_info(F) of
 			 {L, M, D} ->
-			     edoc_report:error(L, Name, {format_error, M, D});
+                             edoc_report:error(L, Name, {format_error, M, D}),
+                             case proplists:get_bool(preprocess, Opts) of
+                                 true ->
+                                     ok;
+                                 false ->
+                                     helpful_message(Name)
+                             end;
 			 Other ->
 			     edoc_report:report(Name, "unknown error in "
                                                 "source code: ~w.", [Other])
@@ -710,6 +716,11 @@ check_forms(Fs, Name) ->
 	  end,
     lists:foreach(Fun, Fs).
 
+helpful_message(Name) ->
+    Ms = ["If the error is caused by too exotic macro",
+          "definitions or uses of macros, adding option",
+          "{preprocess, true} can help. See also edoc(3)."],
+    lists:foreach(fun(M) -> edoc_report:report(Name, M, []) end, Ms).
 
 %% @spec get_doc(File::filename()) -> {ModuleName, edoc_module()}
 %% @equiv get_doc(File, [])
diff --git a/lib/edoc/vsn.mk b/lib/edoc/vsn.mk
index 0b3636f030..b6e1422623 100644
--- a/lib/edoc/vsn.mk
+++ b/lib/edoc/vsn.mk
@@ -1 +1 @@
-EDOC_VSN = 0.9.4
+EDOC_VSN = 0.10
diff --git a/lib/eldap/README b/lib/eldap/README
index e1bde9d658..238f140e93 100644
--- a/lib/eldap/README
+++ b/lib/eldap/README
@@ -23,7 +23,7 @@ system has been configured with SSL.
 In the test directory there are some hints and examples
 on how to test the code and how to setup and populate 
 an OpenLDAP server. The 'eldap' code has been tested
-agains OpenLDAP, IPlanet and ActiveDirectory servers.
+against OpenLDAP, IPlanet and ActiveDirectory servers.
 
 If you plan to incorporate this code into your system
 I suggest that you build a server/supervisor harnesk
diff --git a/lib/eldap/doc/src/eldap.xml b/lib/eldap/doc/src/eldap.xml
index f2c7889e58..790a2f4e26 100644
--- a/lib/eldap/doc/src/eldap.xml
+++ b/lib/eldap/doc/src/eldap.xml
@@ -28,7 +28,7 @@
     <date>2000-06-20</date>
     <rev>B</rev>
   </header>
-  <module>eldap</module>
+  <module since="OTP R15B01">eldap</module>
   <modulesummary>LDAP Client</modulesummary>
   <description>
     <p>This module provides a client api to the Lightweight Directory Access Protocol (LDAP).
@@ -103,7 +103,7 @@
 
   <funcs>
     <func>
-      <name>open([Host]) -> {ok, Handle} | {error, Reason}</name>
+      <name since="OTP R15B01">open([Host]) -> {ok, Handle} | {error, Reason}</name>
       <fsummary>Open a connection to an LDAP server.</fsummary>
       <type>
 	<v>Handle = handle()</v>
@@ -113,7 +113,7 @@
       </desc>
     </func>
     <func>
-      <name>open([Host], [Option]) -> {ok, Handle} | {error, Reason}</name>
+      <name since="OTP R15B01">open([Host], [Option]) -> {ok, Handle} | {error, Reason}</name>
       <fsummary>Open a connection to an LDAP server.</fsummary>
       <type>
 	<v>Handle = handle()</v>
@@ -129,7 +129,7 @@
       </desc>
     </func>
     <func>
-      <name>close(Handle) -> ok</name>
+      <name since="OTP R15B01">close(Handle) -> ok</name>
       <fsummary>Shutdown the connection.</fsummary>
       <type>
 	<v>Handle = handle()</v>
@@ -140,14 +140,14 @@
       </desc>
     </func>
     <func>
-      <name>start_tls(Handle, Options) -> return_value()</name>
+      <name since="OTP R16B03">start_tls(Handle, Options) -> return_value()</name>
       <fsummary>Upgrade a connection to TLS.</fsummary>
       <desc>
         <p>Same as start_tls(Handle, Options, infinity)</p>
       </desc>
     </func>
     <func>
-      <name>start_tls(Handle, Options, Timeout) -> return_value()</name>
+      <name since="OTP R16B03">start_tls(Handle, Options, Timeout) -> return_value()</name>
       <fsummary>Upgrade a connection to TLS.</fsummary>
       <type>
 	<v>Handle = handle()</v>
@@ -176,7 +176,7 @@
       </desc>
     </func>
     <func>
-      <name>simple_bind(Handle, Dn, Password) -> return_value()</name>
+      <name since="OTP R15B01">simple_bind(Handle, Dn, Password) -> return_value()</name>
       <fsummary>Authenticate the connection.</fsummary>
       <type>
 	<v>Handle = handle()</v>
@@ -188,7 +188,7 @@
       </desc>
     </func>
     <func>
-      <name>add(Handle, Dn, [Attribute]) -> return_value()</name>
+      <name since="OTP R15B01">add(Handle, Dn, [Attribute]) -> return_value()</name>
       <fsummary>Add an entry.</fsummary>
       <type>
 	<v>Handle = handle()</v>
@@ -209,7 +209,7 @@
       </desc>
     </func>
     <func>
-      <name>delete(Handle, Dn) -> return_value()</name>
+      <name since="OTP R15B01">delete(Handle, Dn) -> return_value()</name>
       <fsummary>Delete an entry.</fsummary>
       <type>
         <v>Dn = string()</v>
@@ -223,7 +223,7 @@
     </func>
 
     <func>
-      <name>mod_add(Type, [Value]) -> modify_op()</name>
+      <name since="OTP R15B01">mod_add(Type, [Value]) -> modify_op()</name>
       <fsummary>Create a modification operation.</fsummary>
       <type>
         <v>Type = string()</v>
@@ -232,7 +232,7 @@
       <desc> <p> Create an add modification operation.</p> </desc>
     </func>
     <func>
-      <name>mod_delete(Type, [Value]) -> modify_op()</name>
+      <name since="OTP R15B01">mod_delete(Type, [Value]) -> modify_op()</name>
       <fsummary>Create a modification operation.</fsummary>
       <type>
         <v>Type = string()</v>
@@ -241,7 +241,7 @@
       <desc> <p> Create a delete modification operation.</p> </desc>
     </func>
     <func>
-      <name>mod_replace(Type, [Value]) -> modify_op()</name>
+      <name since="OTP R15B01">mod_replace(Type, [Value]) -> modify_op()</name>
       <fsummary>Create a modification operation.</fsummary>
       <type>
         <v>Type = string()</v>
@@ -251,7 +251,7 @@
     </func>
 
     <func>
-      <name>modify(Handle, Dn, [ModifyOp]) -> return_value()</name>
+      <name since="OTP R15B01">modify(Handle, Dn, [ModifyOp]) -> return_value()</name>
       <fsummary>Modify an entry.</fsummary>
       <type>
         <v>Dn = string()</v>
@@ -267,7 +267,7 @@
       </desc>
     </func>
     <func>
-      <name>modify_password(Handle, Dn, NewPasswd) -> return_value() | {ok, GenPasswd}</name>
+      <name since="OTP 18.0">modify_password(Handle, Dn, NewPasswd) -> return_value() | {ok, GenPasswd}</name>
       <fsummary>Modify the password of a user.</fsummary>
       <type>
         <v>Dn = string()</v>
@@ -278,7 +278,7 @@
       </desc>
     </func>
     <func>
-      <name>modify_password(Handle, Dn, NewPasswd, OldPasswd) -> return_value() | {ok, GenPasswd}</name>
+      <name since="OTP 18.0">modify_password(Handle, Dn, NewPasswd, OldPasswd) -> return_value() | {ok, GenPasswd}</name>
       <fsummary>Modify the password of a user.</fsummary>
       <type>
         <v>Dn = string()</v>
@@ -307,7 +307,7 @@
       </desc>
     </func>
     <func>
-      <name>modify_dn(Handle, Dn, NewRDN, DeleteOldRDN, NewSupDN) -> return_value()</name>
+      <name since="OTP R15B01">modify_dn(Handle, Dn, NewRDN, DeleteOldRDN, NewSupDN) -> return_value()</name>
       <fsummary>Modify the DN of an entry.</fsummary>
       <type>
         <v>Dn = string()</v>
@@ -327,7 +327,7 @@
       </desc>
     </func>
     <func>
-      <name>search(Handle, SearchOptions) -> {ok, #eldap_search_result{}} | {ok, {referral,referrals()}} | {error, Reason}</name>
+      <name since="OTP R15B01">search(Handle, SearchOptions) -> {ok, #eldap_search_result{}} | {ok, {referral,referrals()}} | {error, Reason}</name>
       <fsummary>Search the Directory</fsummary>
       <type>
         <v>SearchOptions = #eldap_search{} | [SearchOption]</v>
@@ -354,44 +354,44 @@
     </func>
 
     <func>
-      <name>baseObject() -> scope()</name>
+      <name since="OTP R15B01">baseObject() -> scope()</name>
       <fsummary>Create search scope.</fsummary>
       <desc> <p> Search baseobject only.</p> </desc>
     </func>
     <func>
-      <name>singleLevel() -> scope()</name>
+      <name since="OTP R15B01">singleLevel() -> scope()</name>
       <fsummary>Create search scope.</fsummary>
       <desc> <p> Search the specified level only, i.e. do not recurse.</p> </desc>
     </func>
     <func>
-      <name>wholeSubtree() -> scope()</name>
+      <name since="OTP R15B01">wholeSubtree() -> scope()</name>
       <fsummary>Create search scope.</fsummary>
       <desc> <p> Search the entire subtree.</p> </desc>
     </func>
 
     <func>
-      <name>neverDerefAliases() -> dereference()</name>
+      <name since="OTP R15B01">neverDerefAliases() -> dereference()</name>
       <fsummary>Create search option.</fsummary>
       <desc> <p>Never derefrence aliases, treat aliases as entries.</p> </desc>
     </func>
     <func>
-      <name>derefAlways() -> dereference()</name>
+      <name since="OTP R15B01">derefAlways() -> dereference()</name>
       <fsummary>Create search option.</fsummary>
       <desc> <p>Always derefrence aliases.</p> </desc>
     </func>
     <func>
-      <name>derefInSearching() -> dereference()</name>
+      <name since="OTP R15B01">derefInSearching() -> dereference()</name>
       <fsummary>Create search option.</fsummary>
       <desc> <p>Derefrence aliases only when searching.</p> </desc>
     </func>
     <func>
-      <name>derefFindingBaseObj() -> dereference()</name>
+      <name since="OTP R15B01">derefFindingBaseObj() -> dereference()</name>
       <fsummary>Create search option.</fsummary>
       <desc> <p>Derefrence aliases only in finding the base.</p> </desc>
     </func>
 
     <func>
-      <name>present(Type) -> filter()</name>
+      <name since="OTP R15B01">present(Type) -> filter()</name>
       <fsummary>Create search filter option.</fsummary>
       <type>
 	<v>Type = string()</v>
@@ -399,7 +399,7 @@
       <desc> <p>Create a filter which filters on attribute type presence.</p> </desc>
     </func>
     <func>
-      <name>substrings(Type, [SubString]) -> filter()</name>
+      <name since="OTP R15B01">substrings(Type, [SubString]) -> filter()</name>
       <fsummary>Create search filter option.</fsummary>
       <type>
 	<v>Type = string()</v>
@@ -409,7 +409,7 @@
       <desc> <p>Create a filter which filters on substrings.</p> </desc>
     </func>
     <func>
-      <name>equalityMatch(Type, Value) -> filter()</name>
+      <name since="OTP R15B01">equalityMatch(Type, Value) -> filter()</name>
       <fsummary>Create search filter option.</fsummary>
       <type>
 	<v>Type = string()</v>
@@ -418,7 +418,7 @@
       <desc> <p>Create a equality filter.</p> </desc>
     </func>
     <func>
-      <name>greaterOrEqual(Type, Value) -> filter()</name>
+      <name since="OTP R15B01">greaterOrEqual(Type, Value) -> filter()</name>
       <fsummary>Create search filter option.</fsummary>
       <type>
 	<v>Type = string()</v>
@@ -427,7 +427,7 @@
       <desc> <p>Create a greater or equal filter.</p> </desc>
     </func>
     <func>
-      <name>lessOrEqual(Type, Value) -> filter()</name>
+      <name since="OTP R15B01">lessOrEqual(Type, Value) -> filter()</name>
       <fsummary>Create search filter option.</fsummary>
       <type>
 	<v>Type = string()</v>
@@ -436,7 +436,7 @@
       <desc> <p>Create a less or equal filter.</p> </desc>
     </func>
     <func>
-      <name>approxMatch(Type, Value) -> filter()</name>
+      <name since="OTP R15B01">approxMatch(Type, Value) -> filter()</name>
       <fsummary>Create search filter option.</fsummary>
       <type>
 	<v>Type = string()</v>
@@ -445,7 +445,7 @@
       <desc> <p>Create a approximation match filter.</p> </desc>
     </func>
     <func>
-      <name>extensibleMatch(MatchValue, OptionalAttrs) -> filter()</name>
+      <name since="OTP 17.4">extensibleMatch(MatchValue, OptionalAttrs) -> filter()</name>
       <fsummary>Create search filter option.</fsummary>
       <type>
 	<v>MatchValue = string()</v>
@@ -459,7 +459,7 @@
       <p>creates a filter which performs a <c>caseExactMatch</c> on the attribute <c>sn</c> and matches with the value <c>"Bar"</c>. The default value of <c>dnAttributes</c> is <c>false</c>.</p> </desc>
     </func>
     <func>
-      <name>'and'([Filter]) -> filter()</name>
+      <name since="OTP R15B01">'and'([Filter]) -> filter()</name>
       <fsummary>Create search filter option.</fsummary>
       <type>
 	<v>Filter = filter()</v>
@@ -467,7 +467,7 @@
       <desc> <p>Creates a filter where all <c>Filter</c> must be true.</p> </desc>
     </func>
     <func>
-      <name>'or'([Filter]) -> filter()</name>
+      <name since="OTP R15B01">'or'([Filter]) -> filter()</name>
       <fsummary>Create search filter option.</fsummary>
       <type>
 	<v>Filter = filter()</v>
@@ -475,7 +475,7 @@
       <desc> <p>Create a filter where at least one of the <c>Filter</c> must be true.</p> </desc>
     </func>
     <func>
-      <name>'not'(Filter) -> filter()</name>
+      <name since="OTP R15B01">'not'(Filter) -> filter()</name>
       <fsummary>Create search filter option.</fsummary>
       <type>
 	<v>Filter = filter()</v>
diff --git a/lib/eldap/test/make_certs.erl b/lib/eldap/test/make_certs.erl
index cfa43289e1..e8a13ae113 100644
--- a/lib/eldap/test/make_certs.erl
+++ b/lib/eldap/test/make_certs.erl
@@ -348,7 +348,7 @@ req_cnf(C) ->
      "default_bits	= ", integer_to_list(C#config.default_bits), "\n"
      "RANDFILE		= $ROOTDIR/RAND\n"
      "encrypt_key	= no\n"
-     "default_md	= md5\n"
+     "default_md	= sha1\n"
      "#string_mask	= pkix\n"
      "x509_extensions	= ca_ext\n"
      "prompt		= no\n"
@@ -394,7 +394,7 @@ ca_cnf(C) ->
      ["crl_extensions = crl_ext\n" || C#config.v2_crls],
      "unique_subject  = no\n"
      "default_days	= 3600\n"
-     "default_md	= md5\n"
+     "default_md	= sha1\n"
      "preserve	        = no\n"
      "policy		= policy_match\n"
      "\n"
diff --git a/lib/erl_docgen/doc/src/doc-build.xml b/lib/erl_docgen/doc/src/doc-build.xml
index 3ea8798639..17e13bff81 100644
--- a/lib/erl_docgen/doc/src/doc-build.xml
+++ b/lib/erl_docgen/doc/src/doc-build.xml
@@ -178,7 +178,7 @@
     </section>
 
     <section>
-      <title>Upcomming changes</title>
+      <title>Upcoming changes</title>
       <p>
 	The output from the <c>erl_docgen</c> documentation build process is now just the OTP style. 
 	But in a near future we will for example add the possibility to change logo, color in the PDF and 
diff --git a/lib/erl_docgen/doc/src/docgen_xml_check.xml b/lib/erl_docgen/doc/src/docgen_xml_check.xml
index 68253edef7..8d6dceef43 100644
--- a/lib/erl_docgen/doc/src/docgen_xml_check.xml
+++ b/lib/erl_docgen/doc/src/docgen_xml_check.xml
@@ -30,7 +30,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>docgen_xml_check</module>
+  <module since="OTP R15B">docgen_xml_check</module>
   <modulesummary>Validate XML documentation source code</modulesummary>
   <description>
     <p><c>docgen_xml_check</c> contains functions for validating XML
@@ -39,7 +39,7 @@
 
   <funcs>
     <func>
-      <name>validate(File) -> ok | error | {error, badfile}</name>
+      <name since="OTP R15B">validate(File) -> ok | error | {error, badfile}</name>
       <fsummary>Validate XML source code.</fsummary>
       <type>
 	<v>File = string()</v>
diff --git a/lib/erl_docgen/doc/src/notes.xml b/lib/erl_docgen/doc/src/notes.xml
index 97c842a324..54f0a36b27 100644
--- a/lib/erl_docgen/doc/src/notes.xml
+++ b/lib/erl_docgen/doc/src/notes.xml
@@ -31,7 +31,31 @@
   </header>
   <p>This document describes the changes made to the <em>erl_docgen</em> application.</p>
 
-  <section><title>Erl_Docgen 0.8.1</title>
+  <section><title>Erl_Docgen 0.9</title>
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+          <p>
+	    The HTML reference documentation shows the OTP version
+	    where modules and functions were first introduced.
+	    Versions older than R13B04 are not shown.</p>
+          <p>
+	    Own Id: OTP-15460</p>
+        </item>
+        <item>
+          <p>
+	    Make html documentation of C functions with many
+	    arguments more readable.</p>
+          <p>
+	    Own Id: OTP-15637 Aux Id: PR-2160 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>Erl_Docgen 0.8.1</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
       <list>
diff --git a/lib/erl_docgen/priv/css/otp_doc.css b/lib/erl_docgen/priv/css/otp_doc.css
index 34c6befb0e..17d9f8dd56 100644
--- a/lib/erl_docgen/priv/css/otp_doc.css
+++ b/lib/erl_docgen/priv/css/otp_doc.css
@@ -71,6 +71,39 @@ a:visited      { color: #1b6ec2; text-decoration: none }
 }
 
 .bold_code   { font-family: mono, Courier, monospace; font-weight: bold }
+
+/* Invisible table for function specs,
+ * just to get since-version out in right margin */
+.func-table, .func-tr, .func-td, .cfunc-td, .func-since-td {
+    width: 200%;
+    border: 0;
+    padding: 0;
+    margin: 0;
+}
+
+.func-tr:nth-child(n) {
+    background: inherit  /* turn off zebra striped rows */
+}
+
+.func-td {
+    width: 50%;
+}
+
+.cfunc-td {
+    width: 50%;
+    padding-left: 100px;
+    text-indent: -100px;
+}
+
+.func-since-td {
+    width: 50%;
+    padding-left: 1em
+}
+
+.func-td:hover {
+ background-color: #f5f5f5;
+}
+
 .code        {
  font-family: mono, Courier, monospace;
  font-weight: normal;
@@ -283,3 +316,9 @@ a > .code {
 .func-types-title{
  font-size: 1em;
 }
+
+.since{
+    color: gray;
+    font-weight: normal;
+    font-size: small;
+}
\ No newline at end of file
diff --git a/lib/erl_docgen/priv/dtd/book.dtd b/lib/erl_docgen/priv/dtd/book.dtd
index aa07d38658..326bf3369a 100644
--- a/lib/erl_docgen/priv/dtd/book.dtd
+++ b/lib/erl_docgen/priv/dtd/book.dtd
@@ -30,7 +30,7 @@
 			       insidecover?,
 			       pagetext,
 			       preamble,
-			       (applications|parts|headline|pagetext)+,
+			       (applications|parts|internals|headline|pagetext)+,
 				(listoffigures?,
 				 listoftables?,
 				 listofterms?,
@@ -56,6 +56,7 @@
 <!ELEMENT applications        (include)* >
 <!ELEMENT parts               (title?,description?,(include|onepart)*) >
 <!ATTLIST parts               lift (yes|no) "no" >
+<!ELEMENT internals           (include)* >
 <!ELEMENT headline            (#PCDATA) >
 <!ELEMENT index               EMPTY >
 <!ELEMENT listoffigures       EMPTY >
diff --git a/lib/erl_docgen/priv/dtd/common.dtd b/lib/erl_docgen/priv/dtd/common.dtd
index b1578ad9d4..0ccd52068b 100644
--- a/lib/erl_docgen/priv/dtd/common.dtd
+++ b/lib/erl_docgen/priv/dtd/common.dtd
@@ -25,7 +25,7 @@
 <!ENTITY % block              "p|pre|code|list|taglist|codeinclude|
                                erleval" >
 <!ENTITY % inline             "#PCDATA|c|i|em|strong|term|cite|br|path|seealso|
-                               url|marker|anno" >
+                               url|marker|anno|image" >
 <!-- XXX --> 
 <!ELEMENT p                   (%inline;)* >
 <!ELEMENT pre                 (#PCDATA|seealso|url|input|anno)* >
diff --git a/lib/erl_docgen/priv/dtd/cref.dtd b/lib/erl_docgen/priv/dtd/cref.dtd
index 5ccd98ed89..d392081807 100644
--- a/lib/erl_docgen/priv/dtd/cref.dtd
+++ b/lib/erl_docgen/priv/dtd/cref.dtd
@@ -30,6 +30,8 @@
 <!-- `name' is used in common.refs.dtd and must therefore 
       be defined in each *ref. dtd -->
 <!ELEMENT name                (ret,nametext) >
+<!ATTLIST name                 since CDATA #IMPLIED>
+
 <!ELEMENT ret                 (#PCDATA) >
 <!ELEMENT nametext            (#PCDATA) >
 
diff --git a/lib/erl_docgen/priv/dtd/erlref.dtd b/lib/erl_docgen/priv/dtd/erlref.dtd
index 78d6771f52..8202ea5a4d 100644
--- a/lib/erl_docgen/priv/dtd/erlref.dtd
+++ b/lib/erl_docgen/priv/dtd/erlref.dtd
@@ -25,6 +25,7 @@
 <!ELEMENT erlref              (header,module,modulesummary,description, 
 			       (section|funcs|datatypes)*,authors?) >
 <!ELEMENT module              (#PCDATA) >
+<!ATTLIST module               since CDATA #IMPLIED>
 <!ELEMENT modulesummary       (#PCDATA) >
 
 <!-- `name' is used in common.refs.dtd and must therefore 
@@ -34,4 +35,5 @@
                                arity CDATA #IMPLIED
 	                       clause_i CDATA #IMPLIED
                                anchor CDATA #IMPLIED
+	                       since CDATA #IMPLIED
                                n_vars CDATA #IMPLIED>
diff --git a/lib/erl_docgen/priv/xsl/db_html.xsl b/lib/erl_docgen/priv/xsl/db_html.xsl
index a0a922216b..18bc8cd1cf 100644
--- a/lib/erl_docgen/priv/xsl/db_html.xsl
+++ b/lib/erl_docgen/priv/xsl/db_html.xsl
@@ -191,6 +191,7 @@
     <xsl:variable name="name" select="@name"/>
     <xsl:variable name="arity" select="@arity"/>
     <xsl:variable name="anchor" select="@anchor"/>
+    <xsl:variable name="since" select="@since"/>
     <xsl:variable name="spec0">
       <xsl:call-template name="find_spec"/>
     </xsl:variable>
@@ -225,11 +226,12 @@
         <xsl:variable name="global_types" select="ancestor::erlref/datatypes"/>
 	<xsl:variable name="local_types"
 		      select="../type[string-length(@name) > 0]"/>
-	<xsl:apply-templates select="$spec/contract/clause/head">
+	  <xsl:apply-templates select="$spec/contract/clause/head">
           <xsl:with-param name="ghlink" select="ancestor-or-self::*[@ghlink]/@ghlink"/>
 	  <xsl:with-param name="local_types" select="$local_types"/>
 	  <xsl:with-param name="global_types" select="$global_types"/>
-	</xsl:apply-templates>
+	  <xsl:with-param name="since" select="$since"/>
+	  </xsl:apply-templates>
       </xsl:when>
     </xsl:choose>
   </xsl:template>
@@ -238,19 +240,32 @@
     <xsl:param name="ghlink"/>
     <xsl:param name="local_types"/>
     <xsl:param name="global_types"/>
+    <xsl:param name="since"/>
     <xsl:variable name="id" select="concat(concat(concat(concat(../../../name,'-'),../../../arity),'-'),generate-id(.))"/>
-    <div class="bold_code func-head"
-         onMouseOver="document.getElementById('ghlink-{$id}').style.visibility = 'visible';"
-         onMouseOut="document.getElementById('ghlink-{$id}').style.visibility = 'hidden';">
-      <xsl:call-template name="ghlink">
-        <xsl:with-param name="ghlink" select="$ghlink"/>
-        <xsl:with-param name="id" select="$id"/>
-      </xsl:call-template>
-      <xsl:apply-templates mode="local_type">
-        <xsl:with-param name="local_types" select="$local_types"/>
-        <xsl:with-param name="global_types" select="$global_types"/>
-      </xsl:apply-templates>
-    </div>
+    <table class="func-table">
+    <tr class="func-tr">
+    <td class="func-td">
+      <div class="bold_code func-head"
+           onMouseOver="document.getElementById('ghlink-{$id}').style.visibility = 'visible';"
+           onMouseOut="document.getElementById('ghlink-{$id}').style.visibility = 'hidden';">
+	<xsl:call-template name="ghlink">
+          <xsl:with-param name="ghlink" select="$ghlink"/>
+          <xsl:with-param name="id" select="$id"/>
+	</xsl:call-template>
+	<xsl:apply-templates mode="local_type">
+	  <xsl:with-param name="local_types" select="$local_types"/>
+	  <xsl:with-param name="global_types" select="$global_types"/>
+	</xsl:apply-templates>
+      </div>
+    </td>
+    <td class="func-since-td">
+      <xsl:if test="string-length($since) > 0">
+	<span class="since"><xsl:value-of select="$since"/>
+	</span>
+      </xsl:if>
+    </td>
+    </tr>
+    </table>
   </xsl:template>
 
   <!-- The *last* <name name="..." arity=".."/> -->
@@ -821,6 +836,10 @@
       <!-- .../part -->
       <xsl:call-template name="part.content" />
     </xsl:if>
+    <xsl:if test="$lname = 'internal'">
+      <!-- .../internals -->
+      <xsl:call-template name="internal.content" />
+    </xsl:if>
     <xsl:if test="$lname = 'chapter'">
       <!-- .../part/chapter -->
       <xsl:call-template name="chapter.content">
@@ -844,12 +863,24 @@
     <xsl:param name="chapnum"/>
     <xsl:param name="curModule"/>
     <xsl:if test="(local-name() = 'part') or ((local-name() = 'chapter') and ancestor::part)">
-      <!-- .../part or.../part/chapter  -->
+      <!-- .../part or .../part/chapter  -->
       <xsl:call-template name="menu.ug">
         <xsl:with-param name="chapnum" select="$chapnum"/>
       </xsl:call-template>
     </xsl:if>
-    <xsl:if test="(local-name() = 'application') or (local-name() = 'erlref')or (local-name() = 'comref')or (local-name() = 'cref')or (local-name() = 'fileref')or (local-name() = 'appref')">
+    <xsl:if test="(local-name() = 'internal' and descendant::chapter) or ((local-name() = 'chapter') and ancestor::internal)">
+      <!-- .../internal or .../internal/chapter  -->
+      <xsl:call-template name="menu.internal.ug">
+        <xsl:with-param name="chapnum" select="$chapnum"/>
+      </xsl:call-template>
+    </xsl:if>
+    <xsl:if test="(local-name() = 'internal' and descendant::erlref) or (((local-name() = 'erlref') or (local-name() = 'comref') or (local-name() = 'cref') or (local-name() = 'fileref') or (local-name() = 'appref')) and ancestor::internal)">
+      <!-- .../internal,.../internal/erlref, .../internal/comref or .../internal/cref  or .../internal/fileref or .../internal/appref -->
+      <xsl:call-template name="menu.internal.ref">
+        <xsl:with-param name="curModule" select="$curModule"/>
+      </xsl:call-template>
+    </xsl:if>
+    <xsl:if test="(local-name() = 'application') or (((local-name() = 'erlref') or (local-name() = 'comref') or (local-name() = 'cref') or (local-name() = 'fileref') or (local-name() = 'appref')) and ancestor::application)">
       <!-- .../application,.../application/erlref, .../application/comref or .../application/cref  or .../application/fileref or .../application/appref -->
       <xsl:call-template name="menu.ref">
         <xsl:with-param name="curModule" select="$curModule"/>
@@ -887,6 +918,9 @@
       <xsl:if test="boolean(/book/applications)">
           <li><a href="index.html">Reference Manual</a></li>
       </xsl:if>
+      <xsl:if test="boolean(/book/internals)">
+          <li><a href="internal_docs.html">Internal Documentation</a></li>
+      </xsl:if>
       <xsl:if test="boolean(/book/releasenotes)">
           <li><a href="release_notes.html">Release Notes</a></li>
       </xsl:if>
@@ -927,6 +961,7 @@
   <xsl:template match="/book">
     <xsl:apply-templates select="parts"/>
     <xsl:apply-templates select="applications"/>
+    <xsl:apply-templates select="internals"/>
     <xsl:apply-templates select="releasenotes"/>
   </xsl:template>
 
@@ -940,6 +975,11 @@
     <xsl:apply-templates select="application"/>
   </xsl:template>
 
+  <!-- Internals -->
+  <xsl:template match="internals">
+    <xsl:apply-templates select="internal"/>
+  </xsl:template>
+
  <!-- Header -->
  <xsl:template match="header"/>
 
@@ -1296,6 +1336,90 @@
   </xsl:template>
 
 
+  <!-- Internal Docs -->
+
+  <!-- Part -->
+  <xsl:template match="internal">
+
+    <xsl:document href="{$outdir}/internal_docs.html" method="html"  encoding="UTF-8" indent="yes" doctype-public="-//W3C//DTD HTML 4.01 Transitional//EN">
+      <xsl:call-template name="pagelayout"/>
+    </xsl:document>
+  </xsl:template>
+
+
+  <!-- Part content-->
+  <xsl:template name="internal.content">
+    <div class="frontpage"/>
+
+    <center><h1><xsl:value-of select="/book/header/title"/> Internal Docs</h1></center>
+
+    <center><h4>Version <xsl:value-of select="$appver"/></h4></center>
+    <center><h4><xsl:value-of select="$gendate"/></h4></center>
+    <div class="extrafrontpageinfo">
+    <center><xsl:value-of select="$extra_front_page_info"/></center>
+    </div>
+
+    <xsl:apply-templates select="chapter|erlref"/>
+
+  </xsl:template>
+
+  <!-- Menu.internal.chapter -->
+  <xsl:template name="menu.internal.ug">
+    <xsl:param name="chapnum"/>
+
+    <div id="leftnav">
+      <div class="innertube">
+
+        <xsl:call-template name="erlang_logo"/>
+
+        <p class="section-title"><xsl:value-of select="/book/header/title"/></p>
+        <p class="section-subtitle">Internal Documentation</p>
+        <p class="section-version">Version <xsl:value-of select="$appver"/></p>
+
+        <xsl:call-template name="menu_top"/>
+
+        <xsl:call-template name="menu_middle"/>
+
+        <h3>Chapters</h3>
+
+        <ul class="flipMenu" imagepath="{$topdocdir}/js/flipmenu">
+          <xsl:call-template name="menu.chapter">
+            <xsl:with-param name="entries" select="/book/internals/internal/chapter[header/title]"/>
+            <xsl:with-param name="chapnum" select="$chapnum"/>
+          </xsl:call-template>
+        </ul>
+      </div>
+    </div>
+  </xsl:template>
+
+    <!-- Menu.internal.ref -->
+  <xsl:template name="menu.internal.ref">
+      <xsl:param name="curModule"/>
+      <div id="leftnav">
+      <div class="innertube">
+
+        <xsl:call-template name="erlang_logo"/>
+
+        <p class="section-title"><xsl:value-of select="/book/header/title"/></p>
+        <p class="section-subtitle">Reference Manual</p>
+        <p class="section-version">Version <xsl:value-of select="$appver"/></p>
+
+        <xsl:call-template name="menu_top"/>
+
+        <xsl:call-template name="menu_middle"/>
+
+        <h3>Table of Contents</h3>
+
+        <ul class="flipMenu">
+          <xsl:call-template name="menu.ref2">
+            <xsl:with-param name="entries" select="/book/internals/internal/erlref[module]|/book/internals/internal/cref[lib]|/book/internals/internal/comref[com]|/book/internals/internal/fileref[file]|/book/internals/internal/appref[app]"/>
+            <!--xsl:with-param name="genFuncMenu" select="true"/-->
+            <xsl:with-param name="curModule" select="$curModule"/>
+          </xsl:call-template>
+        </ul>
+      </div>
+    </div>
+  </xsl:template>
 
 
   <!--Users Guide -->
@@ -1884,6 +2008,16 @@
         <xsl:with-param name="partnum" select="$partnum"/>
       </xsl:apply-templates>
     </div>
+    <!-- Since -->
+    <xsl:if test="string-length(../module/@since) > 0">
+      <xsl:call-template name="h3_title_link">
+	<xsl:with-param name="title">Since</xsl:with-param>
+      </xsl:call-template>
+      <div class="REFBODY module-since">
+	Module <xsl:value-of select="../module"/> was introduced in
+	<xsl:value-of select="../module/@since"/>.
+      </div>
+    </xsl:if>
   </xsl:template>
 
   <!-- Lib -->
@@ -2030,11 +2164,10 @@
   <xsl:template match="func">
     <xsl:param name="partnum"/>
 
-    <p><xsl:apply-templates select="name"/>
-       <xsl:apply-templates
-           select="name[string-length(@arity) > 0 and position()=last()]"
-           mode="types"/>
-    </p>
+    <xsl:apply-templates select="name"/>
+    <xsl:apply-templates
+        select="name[string-length(@arity) > 0 and position()=last()]"
+        mode="types"/>
 
     <xsl:apply-templates select="fsummary|type|desc">
       <xsl:with-param name="partnum" select="$partnum"/>
@@ -2093,19 +2226,22 @@
 
     <xsl:choose>
       <xsl:when test="ancestor::cref">
-        <span class="bold_code bc-7">
-          <xsl:call-template name="title_link">
-            <xsl:with-param name="link" select="substring-before(nametext, '(')"/>
-            <xsl:with-param name="title">
-              <xsl:value-of select="ret"/>
-              <xsl:call-template name="maybe-space-after-ret">
-                <xsl:with-param name="s" select="ret"/>
-              </xsl:call-template>
-              <xsl:value-of select="nametext"/>
-            </xsl:with-param>
-          </xsl:call-template>
-        </span>
-        <br/>
+	<table class="func-table">
+	  <tr class="func-tr">
+	    <td class="cfunc-td">
+              <span class="bold_code bc-7">
+		<xsl:call-template name="title_link">
+		  <xsl:with-param name="link" select="substring-before(nametext, '(')"/>
+		</xsl:call-template>
+              </span>
+	    </td>
+	    <td class="func-since-td">
+	      <xsl:if test="string-length(@since) > 0">
+		<span class="since"><xsl:value-of select="@since"/></span>
+	      </xsl:if>
+	    </td>
+	  </tr>
+	</table>
       </xsl:when>
       <xsl:when test="ancestor::erlref">
         <xsl:variable name="fname">
@@ -2136,14 +2272,25 @@
             </div>
 	  </xsl:when>
           <xsl:otherwise>
-            <div class="bold_code fun-type">
-              <xsl:call-template name="title_link">
-                <xsl:with-param name="link" select="concat(concat($fname,'-'),$arity)"/>
-                <xsl:with-param name="title">
-                  <xsl:apply-templates/>
-                </xsl:with-param>
-              </xsl:call-template>
-            </div>
+	    <table class="func-table">
+	      <tr class="func-tr">
+	      <td class="func-td">
+		<div class="bold_code fun-type">
+		  <xsl:call-template name="title_link">
+                    <xsl:with-param name="link" select="concat(concat($fname,'-'),$arity)"/>
+                    <xsl:with-param name="title">
+                      <xsl:apply-templates/>
+                    </xsl:with-param>
+		  </xsl:call-template>
+		</div>
+	      </td>
+	      <td class="func-since-td">
+		<xsl:if test="string-length(@since) > 0">
+		  <span class="since"><xsl:value-of select="@since"/></span>
+		</xsl:if>
+	      </td>
+	      </tr>
+	    </table>
           </xsl:otherwise>
 	</xsl:choose>
       </xsl:when>
@@ -2154,18 +2301,6 @@
 
   </xsl:template>
 
-  <xsl:template name="maybe-space-after-ret">
-    <xsl:param name="s"/>
-    <xsl:variable name="last_char"
-	          select="substring($s, string-length($s), 1)"/>
-    <xsl:choose>
-      <xsl:when test="$last_char != '*'">
-        <xsl:text> </xsl:text>
-      </xsl:when>
-    </xsl:choose>
-  </xsl:template>
-
-
   <!-- Type -->
   <xsl:template match="type">
     <xsl:param name="partnum"/>
@@ -2219,7 +2354,7 @@
   </xsl:template>
 
   <xsl:template name="title_link">
-    <xsl:param name="title"/>
+    <xsl:param name="title" select="'APPLY'"/>
     <xsl:param name="link" select="erl:to-link(title)"/>
     <xsl:param name="ghlink" select="ancestor-or-self::*[@ghlink][position() = 1]/@ghlink"/>
     <xsl:variable name="id" select="concat(concat($link,'-'), generate-id(.))"/>
@@ -2229,7 +2364,16 @@
           <xsl:with-param name="id" select="$id"/>
           <xsl:with-param name="ghlink" select="$ghlink"/>
       </xsl:call-template>
-      <a class="title_link" name="{$link}" href="#{$link}"><xsl:value-of select="$title"/></a>
+      <a class="title_link" name="{$link}" href="#{$link}">
+	<xsl:choose>
+	  <xsl:when test="$title = 'APPLY'">
+	    <xsl:apply-templates/>   <!-- like <ret> and <nametext> -->
+	  </xsl:when>
+	  <xsl:otherwise>
+	    <xsl:value-of select="$title"/>
+	  </xsl:otherwise>
+	</xsl:choose>
+      </a>
     </span>
   </xsl:template>
 
@@ -2659,4 +2803,46 @@
     <xsl:value-of select="normalize-space(.)"/>
   </xsl:template>
 
+  <xsl:template match="ret">
+    <xsl:value-of select="."/>
+    <xsl:variable name="last_char" select="substring(., string-length(.), 1)"/>
+    <xsl:if test="$last_char != '*'">
+      <xsl:text> </xsl:text>
+    </xsl:if>
+  </xsl:template>
+
+  <xsl:template match="nametext">
+    <xsl:value-of select="substring-before(.,'(')"/>
+    <xsl:text>(</xsl:text>
+    <xsl:variable name="arglist" select="substring-after(.,'(')"/>
+    <xsl:choose>
+      <xsl:when test="$arglist = ')' or $arglist = 'void)'">
+	<xsl:value-of select="$arglist"/>
+      </xsl:when>
+      <xsl:otherwise>
+	<br/>
+	<xsl:call-template name="cfunc-arglist">
+	  <xsl:with-param name="text" select="$arglist"/>
+	</xsl:call-template>
+      </xsl:otherwise>
+    </xsl:choose>
+  </xsl:template>
+
+  <!-- Format C function argument list with <br> after comma -->
+  <xsl:template name="cfunc-arglist">
+    <xsl:param name="text"/>
+    <xsl:variable name="line" select="normalize-space($text)"/>
+    <xsl:choose>
+      <xsl:when test="contains($line,',')">
+	<xsl:value-of select="substring-before($line,',')"/>,<br/>
+        <xsl:call-template name="cfunc-arglist">
+          <xsl:with-param name="text" select="substring-after($line,',')"/>
+        </xsl:call-template>
+      </xsl:when>
+      <xsl:otherwise>
+        <xsl:value-of select="$line"/>
+      </xsl:otherwise>
+    </xsl:choose>
+  </xsl:template>
+
 </xsl:stylesheet>
diff --git a/lib/erl_docgen/src/docgen_edoc_xml_cb.erl b/lib/erl_docgen/src/docgen_edoc_xml_cb.erl
index b065c18cda..2c9aa2e3a3 100644
--- a/lib/erl_docgen/src/docgen_edoc_xml_cb.erl
+++ b/lib/erl_docgen/src/docgen_edoc_xml_cb.erl
@@ -182,7 +182,7 @@ chapter_title(#xmlElement{content=Es}) -> % name = h3 | h4
 %% otp_xmlify(Es1) -> Es2
 %%   Es1 = Es2 = [#xmlElement{} | #xmlText{}]
 %% Fix things that are allowed in XHTML but not in chapter/erlref DTDs.
-%% 1)  lists (<ul>, <ol>, <dl>) and code snippets (<pre>) can not occur
+%% 1)  lists (<ul>, <ol>, <dl>) and code snippets (<pre>) cannot occur
 %%     within a <p>, such a <p> must be splitted into a sequence of <p>,
 %%     <ul>, <ol>, <dl> and <pre>.
 %% 2)  <a> must only have either a href attribute (corresponds to a
@@ -1260,11 +1260,15 @@ get_text(#xmlElement{content=[E]}) ->
 
 %% text_and_name_only(Es) -> {N, Ts}
 text_and_a_name_only(Es) ->
-    [Name|_] = [Name ||
-                   #xmlElement{
-                      name = a,
-                      attributes = [#xmlAttribute{name=name}]}=Name <- Es],
-    {Name#xmlElement{content = []}, text_only(Es)}.
+    erlang:display(Es),
+    case [Name || #xmlElement{
+                     name = a,
+                     attributes = [#xmlAttribute{name=name}]}=Name <- Es] of
+        [Name|_] ->
+            {Name#xmlElement{content = []}, text_only(Es)};
+        [] ->
+            {"", text_only(Es)}
+    end.
 
 %% text_only(Es) -> Ts
 %% Takes a list of xmlElement and xmlText and return a lists of xmlText.
diff --git a/lib/erl_docgen/src/docgen_xmerl_xml_cb.erl b/lib/erl_docgen/src/docgen_xmerl_xml_cb.erl
index 59d4dccfb7..9d69143c3c 100644
--- a/lib/erl_docgen/src/docgen_xmerl_xml_cb.erl
+++ b/lib/erl_docgen/src/docgen_xmerl_xml_cb.erl
@@ -87,6 +87,7 @@ convert_tag(underline, Attrs)  -> {em, Attrs};
 convert_tag(Tag, Attrs)        -> {Tag, Attrs}.
 
 is_url("http:"++_) -> true;
+is_url("https:"++_) -> true;
 is_url("../"++_) -> true;
 is_url(FileRef) ->
     case filename:extension(FileRef) of
diff --git a/lib/erl_docgen/vsn.mk b/lib/erl_docgen/vsn.mk
index 3b2f6db6a1..6321f229dd 100644
--- a/lib/erl_docgen/vsn.mk
+++ b/lib/erl_docgen/vsn.mk
@@ -1 +1 @@
-ERL_DOCGEN_VSN = 0.8.1
+ERL_DOCGEN_VSN = 0.9
diff --git a/lib/erl_interface/configure.in b/lib/erl_interface/configure.in
index a155ceef7e..f0e9b2eb3f 100644
--- a/lib/erl_interface/configure.in
+++ b/lib/erl_interface/configure.in
@@ -29,11 +29,6 @@ dnl m4_define(EI_VERSION,regexp(m4_include(VERSION),[version \([-.0-9A-Za-z]+\)]
 
 AC_INIT()
 
-if test "x$no_recursion" != "xyes" -a "x$OVERRIDE_CONFIG_CACHE" = "x"; then
-    # We do not want to use a common cache!
-    cache_file=/dev/null
-fi
-
 dnl How to set srcdir absolute is taken from the GNU Emacs distribution
 #### Make srcdir absolute, if it isn't already.  It's important to
 #### avoid running the path through pwd unnecessary, since pwd can
@@ -82,6 +77,15 @@ AC_ARG_ENABLE(threads,
   esac ],
 [ threads_disabled=maybe ])
 
+AC_ARG_ENABLE(mask-real-errno,
+[  --disable-mask-real-errno do not mask real 'errno'],
+[ case "$enableval" in
+    no) mask_real_errno=no ;;
+    *)  mask_real_errno=yes ;;
+  esac ],
+[ mask_real_errno=yes ])
+
+
 dnl ----------------------------------------------------------------------
 dnl Checks for programs
 dnl ----------------------------------------------------------------------
@@ -100,6 +104,10 @@ AC_CHECK_SIZEOF(long)
 AC_CHECK_SIZEOF(void *)
 AC_CHECK_SIZEOF(long long)
 
+if test $mask_real_errno = yes; then
+   AC_DEFINE(EI_HIDE_REAL_ERRNO, 1, [Define if 'errno' should not be exposed as is in 'erl_errno'])
+fi
+
 dnl We set EI_64BIT mode when long is 8 bytes, this makes things
 dnl work on windows and unix correctly
 if test $ac_cv_sizeof_long = 8; then
@@ -158,7 +166,7 @@ AC_CHECK_LIB([socket], [getpeername])
 # Checks for header files.
 AC_HEADER_STDC
 AC_HEADER_SYS_WAIT
-AC_CHECK_HEADERS([arpa/inet.h fcntl.h limits.h malloc.h netdb.h netinet/in.h stddef.h stdlib.h string.h sys/param.h sys/socket.h sys/select.h sys/time.h unistd.h sys/types.h])
+AC_CHECK_HEADERS([arpa/inet.h fcntl.h limits.h malloc.h netdb.h netinet/in.h stddef.h stdlib.h string.h sys/param.h sys/socket.h sys/select.h sys/time.h unistd.h sys/types.h sys/uio.h])
 
 # Checks for typedefs, structures, and compiler characteristics.
 # fixme AC_C_CONST & AC_C_VOLATILE needed for Windows?
@@ -193,7 +201,7 @@ AC_CHECK_FUNCS([dup2 gethostbyaddr gethostbyname \
 	gethostbyaddr_r \
 	gethostbyname_r gethostname writev \
 	gethrtime gettimeofday inet_ntoa memchr memmove memset select \
-	socket strchr strerror strrchr strstr uname])
+	socket strchr strerror strrchr strstr uname sysconf])
 AC_CHECK_FUNC(res_gethostbyname, [],
     AC_CHECK_LIB(resolv, res_gethostbyname)
 )
@@ -255,6 +263,7 @@ AC_SUBST(EI_THREADS)
 case "$threads_disabled" in
     no|maybe)
 	LM_CHECK_THR_LIB
+        ETHR_CHK_GCC_ATOMIC_OPS([])
 
 	case "$THR_LIB_NAME" in
 	    "")
@@ -268,7 +277,7 @@ case "$threads_disabled" in
 		EI_THREADS="true"	
 		THR_DEFS="$THR_DEFS -D_WIN32_WINNT=0x0600 -DWINVER=0x0600"
 		;;
-	    pthread)	
+	    pthread)
 		EI_THREADS="true"
 		;;
 	    *)
@@ -351,6 +360,7 @@ LDFLAGS="$LDFLAGS $sanitizers"
 # XXX
 # ---------------------------------------------------------------------------
 
+
 AC_OUTPUT(
 	src/$host/Makefile:src/Makefile.in
 	src/$host/eidefs.mk:src/eidefs.mk.in
diff --git a/lib/erl_interface/doc/src/ei.xml b/lib/erl_interface/doc/src/ei.xml
index 9502fb1ee7..f081ca926a 100644
--- a/lib/erl_interface/doc/src/ei.xml
+++ b/lib/erl_interface/doc/src/ei.xml
@@ -35,6 +35,9 @@
   <lib>ei</lib>
   <libsummary>Routines for handling the Erlang binary term format.</libsummary>
   <description>
+    <note><p>The support for VxWorks is deprecated as of OTP 22, and
+    will be removed in OTP 23.</p></note>
+    
     <p>The library <c>ei</c> contains macros and functions to encode
       and decode the Erlang binary term format.</p>
 
@@ -124,7 +127,7 @@ typedef enum {
 
   <funcs>
       <func>
-          <name><ret>int</ret><nametext>ei_decode_atom(const char *buf, int *index, char *p)</nametext></name>
+          <name since=""><ret>int</ret><nametext>ei_decode_atom(const char *buf, int *index, char *p)</nametext></name>
           <fsummary>Decode an atom.</fsummary>
           <desc>
               <p>Decodes an atom from the binary format. The <c>NULL</c>-terminated
@@ -134,7 +137,7 @@ typedef enum {
       </func>
 
       <func>
-          <name><ret>int</ret><nametext>ei_decode_atom_as(const char *buf, int *index, char *p, int plen, erlang_char_encoding want, erlang_char_encoding* was, erlang_char_encoding* result)</nametext></name>
+          <name since="OTP R16B"><ret>int</ret><nametext>ei_decode_atom_as(const char *buf, int *index, char *p, int plen, erlang_char_encoding want, erlang_char_encoding* was, erlang_char_encoding* result)</nametext></name>
           <fsummary>Decode an atom.</fsummary>
           <desc>
               <p>Decodes an atom from the binary format. The <c>NULL</c>-terminated
@@ -158,7 +161,7 @@ typedef enum {
       </func>
 
       <func>
-          <name><ret>int</ret><nametext>ei_decode_bignum(const char *buf, int *index, mpz_t obj)</nametext></name>
+          <name since=""><ret>int</ret><nametext>ei_decode_bignum(const char *buf, int *index, mpz_t obj)</nametext></name>
           <fsummary>Decode a GMP arbitrary precision integer.</fsummary>
           <desc>
               <p>Decodes an integer in the binary format to a GMP
@@ -168,7 +171,7 @@ typedef enum {
       </func>
 
       <func>
-          <name><ret>int</ret><nametext>ei_decode_binary(const char *buf, int *index, void *p, long *len)</nametext></name>
+          <name since=""><ret>int</ret><nametext>ei_decode_binary(const char *buf, int *index, void *p, long *len)</nametext></name>
           <fsummary>Decode a binary.</fsummary>
           <desc>
               <p>Decodes a binary from the binary format. Parameter
@@ -180,7 +183,7 @@ typedef enum {
       </func>
 
       <func>
-          <name><ret>int</ret><nametext>ei_decode_boolean(const char *buf, int *index, int *p)</nametext></name>
+          <name since=""><ret>int</ret><nametext>ei_decode_boolean(const char *buf, int *index, int *p)</nametext></name>
           <fsummary>Decode a boolean.</fsummary>
           <desc>
               <p>Decodes a boolean value from the binary format.
@@ -190,7 +193,7 @@ typedef enum {
       </func>
 
       <func>
-          <name><ret>int</ret><nametext>ei_decode_char(const char *buf, int *index, char *p)</nametext></name>
+          <name since=""><ret>int</ret><nametext>ei_decode_char(const char *buf, int *index, char *p)</nametext></name>
           <fsummary>Decode an 8-bit integer between 0-255.</fsummary>
           <desc>
               <p>Decodes a char (8-bit) integer between 0-255 from the binary format.
@@ -203,7 +206,7 @@ typedef enum {
       </func>
 
       <func>
-          <name><ret>int</ret><nametext>ei_decode_double(const char *buf, int *index, double *p)</nametext></name>
+          <name since=""><ret>int</ret><nametext>ei_decode_double(const char *buf, int *index, double *p)</nametext></name>
           <fsummary>Decode a double.</fsummary>
           <desc>
               <p>Decodes a double-precision (64-bit) floating
@@ -212,7 +215,7 @@ typedef enum {
       </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_decode_ei_term(const char* buf, int* index, ei_term* term)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_decode_ei_term(const char* buf, int* index, ei_term* term)</nametext></name>
       <fsummary>Decode a term, without previous knowledge of type.</fsummary>
       <desc>
         <p>Decodes any term, or at least tries to. If the term
@@ -233,8 +236,8 @@ typedef enum {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_decode_fun(const char *buf, int *index, erlang_fun *p)</nametext></name>
-      <name><ret>void</ret><nametext>free_fun(erlang_fun* f)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_decode_fun(const char *buf, int *index, erlang_fun *p)</nametext></name>
+      <name since=""><ret>void</ret><nametext>free_fun(erlang_fun* f)</nametext></name>
       <fsummary>Decode a fun.</fsummary>
       <desc>
         <p>Decodes a fun from the binary format. Parameter
@@ -248,7 +251,7 @@ typedef enum {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_decode_list_header(const char *buf, int *index, int *arity)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_decode_list_header(const char *buf, int *index, int *arity)</nametext></name>
       <fsummary>Decode a list.</fsummary>
       <desc>
         <p>Decodes a list header from the binary
@@ -265,7 +268,7 @@ typedef enum {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_decode_long(const char *buf, int *index, long *p)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_decode_long(const char *buf, int *index, long *p)</nametext></name>
       <fsummary>Decode integer.</fsummary>
       <desc>
         <p>Decodes a long integer from the binary format.
@@ -275,7 +278,7 @@ typedef enum {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_decode_longlong(const char *buf, int *index, long long *p)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_decode_longlong(const char *buf, int *index, long long *p)</nametext></name>
       <fsummary>Decode integer.</fsummary>
       <desc>
         <p>Decodes a GCC <c>long long</c> or Visual C++
@@ -286,7 +289,7 @@ typedef enum {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_decode_map_header(const char *buf, int *index, int *arity)</nametext></name>
+      <name since="OTP 17.0"><ret>int</ret><nametext>ei_decode_map_header(const char *buf, int *index, int *arity)</nametext></name>
       <fsummary>Decode a map.</fsummary>
       <desc>
         <p>Decodes a map header from the binary
@@ -299,7 +302,7 @@ typedef enum {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_decode_pid(const char *buf, int *index, erlang_pid *p)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_decode_pid(const char *buf, int *index, erlang_pid *p)</nametext></name>
       <fsummary>Decode a <c>pid</c>.</fsummary>
       <desc>
         <p>Decodes a process identifier (pid) from the binary format.</p>
@@ -307,7 +310,7 @@ typedef enum {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_decode_port(const char *buf, int *index, erlang_port *p)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_decode_port(const char *buf, int *index, erlang_port *p)</nametext></name>
       <fsummary>Decode a port.</fsummary>
       <desc>
         <p>Decodes a port identifier from the binary format.</p>
@@ -315,7 +318,7 @@ typedef enum {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_decode_ref(const char *buf, int *index, erlang_ref *p)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_decode_ref(const char *buf, int *index, erlang_ref *p)</nametext></name>
       <fsummary>Decode a reference.</fsummary>
       <desc>
         <p>Decodes a reference from the binary format.</p>
@@ -323,7 +326,7 @@ typedef enum {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_decode_string(const char *buf, int *index, char *p)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_decode_string(const char *buf, int *index, char *p)</nametext></name>
       <fsummary>Decode a string.</fsummary>
       <desc>
         <p>Decodes a string from the binary format. A
@@ -338,7 +341,7 @@ typedef enum {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_decode_term(const char *buf, int *index, void *t)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_decode_term(const char *buf, int *index, void *t)</nametext></name>
       <fsummary>Decode a <c>ETERM</c>.</fsummary>
       <desc>
         <p>Decodes a term from the binary format. The term
@@ -352,7 +355,7 @@ typedef enum {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_decode_trace(const char *buf, int *index, erlang_trace *p)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_decode_trace(const char *buf, int *index, erlang_trace *p)</nametext></name>
       <fsummary>Decode a trace token.</fsummary>
       <desc>
         <p>Decodes an Erlang trace token from the binary format.</p>
@@ -360,7 +363,7 @@ typedef enum {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_decode_tuple_header(const char *buf, int *index, int *arity)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_decode_tuple_header(const char *buf, int *index, int *arity)</nametext></name>
       <fsummary>Decode a tuple.</fsummary>
       <desc>
         <p>Decodes a tuple header, the number of elements
@@ -370,7 +373,7 @@ typedef enum {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_decode_ulong(const char *buf, int *index, unsigned long *p)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_decode_ulong(const char *buf, int *index, unsigned long *p)</nametext></name>
       <fsummary>Decode unsigned integer.</fsummary>
       <desc>
         <p>Decodes an unsigned long integer from the binary format.
@@ -380,7 +383,7 @@ typedef enum {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_decode_ulonglong(const char *buf, int *index, unsigned long long *p)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_decode_ulonglong(const char *buf, int *index, unsigned long long *p)</nametext></name>
       <fsummary>Decode unsigned integer.</fsummary>
       <desc>
         <p>Decodes a GCC <c>unsigned long long</c> or Visual C++
@@ -390,7 +393,7 @@ typedef enum {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_decode_version(const char *buf, int *index, int *version)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_decode_version(const char *buf, int *index, int *version)</nametext></name>
       <fsummary>Decode an empty list (<c>nil</c>).</fsummary>
       <desc>
         <p>Decodes the version magic number for the
@@ -400,10 +403,10 @@ typedef enum {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_encode_atom(char *buf, int *index, const char *p)</nametext></name>
-      <name><ret>int</ret><nametext>ei_encode_atom_len(char *buf, int *index, const char *p, int len)</nametext></name>
-      <name><ret>int</ret><nametext>ei_x_encode_atom(ei_x_buff* x, const char *p)</nametext></name>
-      <name><ret>int</ret><nametext>ei_x_encode_atom_len(ei_x_buff* x, const char *p, int len)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_encode_atom(char *buf, int *index, const char *p)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_encode_atom_len(char *buf, int *index, const char *p, int len)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_x_encode_atom(ei_x_buff* x, const char *p)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_x_encode_atom_len(ei_x_buff* x, const char *p, int len)</nametext></name>
       <fsummary>Encode an atom.</fsummary>
       <desc>
         <p>Encodes an atom in the binary format. Parameter <c>p</c>
@@ -415,10 +418,10 @@ typedef enum {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_encode_atom_as(char *buf, int *index, const char *p, erlang_char_encoding from_enc, erlang_char_encoding to_enc)</nametext></name>
-      <name><ret>int</ret><nametext>ei_encode_atom_len_as(char *buf, int *index, const char *p, int len, erlang_char_encoding from_enc, erlang_char_encoding to_enc)</nametext></name>
-      <name><ret>int</ret><nametext>ei_x_encode_atom_as(ei_x_buff* x, const char *p, erlang_char_encoding from_enc, erlang_char_encoding to_enc)</nametext></name>
-      <name><ret>int</ret><nametext>ei_x_encode_atom_len_as(ei_x_buff* x, const char *p, int len, erlang_char_encoding from_enc, erlang_char_encoding to_enc)</nametext></name>
+      <name since="OTP R16B"><ret>int</ret><nametext>ei_encode_atom_as(char *buf, int *index, const char *p, erlang_char_encoding from_enc, erlang_char_encoding to_enc)</nametext></name>
+      <name since="OTP R16B"><ret>int</ret><nametext>ei_encode_atom_len_as(char *buf, int *index, const char *p, int len, erlang_char_encoding from_enc, erlang_char_encoding to_enc)</nametext></name>
+      <name since="OTP R16B"><ret>int</ret><nametext>ei_x_encode_atom_as(ei_x_buff* x, const char *p, erlang_char_encoding from_enc, erlang_char_encoding to_enc)</nametext></name>
+      <name since="OTP R16B"><ret>int</ret><nametext>ei_x_encode_atom_len_as(ei_x_buff* x, const char *p, int len, erlang_char_encoding from_enc, erlang_char_encoding to_enc)</nametext></name>
       <fsummary>Encode an atom.</fsummary>
       <desc>
         <p>Encodes an atom in the binary format. Parameter <c>p</c> is the name of the atom with
@@ -435,8 +438,8 @@ typedef enum {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_encode_bignum(char *buf, int *index, mpz_t obj)</nametext></name>
-      <name><ret>int</ret><nametext>ei_x_encode_bignum(ei_x_buff *x, mpz_t obj)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_encode_bignum(char *buf, int *index, mpz_t obj)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_x_encode_bignum(ei_x_buff *x, mpz_t obj)</nametext></name>
       <fsummary>Encode an arbitrary precision integer.</fsummary>
       <desc>
         <p>Encodes a GMP <c>mpz_t</c> integer to binary format.
@@ -446,8 +449,8 @@ typedef enum {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_encode_binary(char *buf, int *index, const void *p, long len)</nametext></name>
-      <name><ret>int</ret><nametext>ei_x_encode_binary(ei_x_buff* x, const void *p, long len)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_encode_binary(char *buf, int *index, const void *p, long len)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_x_encode_binary(ei_x_buff* x, const void *p, long len)</nametext></name>
       <fsummary>Encode a binary.</fsummary>
       <desc>
         <p>Encodes a binary in the binary format. The data is at
@@ -456,8 +459,8 @@ typedef enum {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_encode_boolean(char *buf, int *index, int p)</nametext></name>
-      <name><ret>int</ret><nametext>ei_x_encode_boolean(ei_x_buff* x, int p)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_encode_boolean(char *buf, int *index, int p)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_x_encode_boolean(ei_x_buff* x, int p)</nametext></name>
       <fsummary>Encode a boolean.</fsummary>
       <desc>
         <p>Encodes a boolean value as the atom <c>true</c> if
@@ -467,8 +470,8 @@ typedef enum {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_encode_char(char *buf, int *index, char p)</nametext></name>
-      <name><ret>int</ret><nametext>ei_x_encode_char(ei_x_buff* x, char p)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_encode_char(char *buf, int *index, char p)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_x_encode_char(ei_x_buff* x, char p)</nametext></name>
       <fsummary>Encode an 8-bit integer between 0-255.</fsummary>
       <desc>
         <p>Encodes a char (8-bit) as an integer between 0-255 in the binary
@@ -481,8 +484,8 @@ typedef enum {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_encode_double(char *buf, int *index, double p)</nametext></name>
-      <name><ret>int</ret><nametext>ei_x_encode_double(ei_x_buff* x, double p)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_encode_double(char *buf, int *index, double p)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_x_encode_double(ei_x_buff* x, double p)</nametext></name>
       <fsummary>Encode a double float.</fsummary>
       <desc>
         <p>Encodes a double-precision (64-bit) floating point number in
@@ -493,8 +496,8 @@ typedef enum {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_encode_empty_list(char* buf, int* index)</nametext></name>
-      <name><ret>int</ret><nametext>ei_x_encode_empty_list(ei_x_buff* x)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_encode_empty_list(char* buf, int* index)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_x_encode_empty_list(ei_x_buff* x)</nametext></name>
       <fsummary>Encode an empty list (<c>nil</c>).</fsummary>
       <desc>
         <p>Encodes an empty list. It is often used at the tail of a list.</p>
@@ -502,8 +505,8 @@ typedef enum {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_encode_fun(char *buf, int *index, const erlang_fun *p)</nametext></name>
-      <name><ret>int</ret><nametext>ei_x_encode_fun(ei_x_buff* x, const erlang_fun* fun)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_encode_fun(char *buf, int *index, const erlang_fun *p)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_x_encode_fun(ei_x_buff* x, const erlang_fun* fun)</nametext></name>
       <fsummary>Encode a fun.</fsummary>
       <desc>
         <p>Encodes a fun in the binary format. Parameter <c>p</c>
@@ -515,8 +518,8 @@ typedef enum {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_encode_list_header(char *buf, int *index, int arity)</nametext></name>
-      <name><ret>int</ret><nametext>ei_x_encode_list_header(ei_x_buff* x, int arity)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_encode_list_header(char *buf, int *index, int arity)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_x_encode_list_header(ei_x_buff* x, int arity)</nametext></name>
       <fsummary>Encode a list.</fsummary>
       <desc>
         <p>Encodes a list header, with a specified
@@ -552,8 +555,8 @@ ei_x_encode_empty_list(&amp;x);</pre>
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_encode_long(char *buf, int *index, long p)</nametext></name>
-      <name><ret>int</ret><nametext>ei_x_encode_long(ei_x_buff* x, long p)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_encode_long(char *buf, int *index, long p)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_x_encode_long(ei_x_buff* x, long p)</nametext></name>
       <fsummary>Encode integer.</fsummary>
       <desc>
         <p>Encodes a long integer in the binary format.
@@ -563,8 +566,8 @@ ei_x_encode_empty_list(&amp;x);</pre>
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_encode_longlong(char *buf, int *index, long long p)</nametext></name>
-      <name><ret>int</ret><nametext>ei_x_encode_longlong(ei_x_buff* x, long long p)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_encode_longlong(char *buf, int *index, long long p)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_x_encode_longlong(ei_x_buff* x, long long p)</nametext></name>
       <fsummary>Encode integer.</fsummary>
       <desc>
         <p>Encodes a GCC <c>long long</c> or Visual C++
@@ -574,8 +577,8 @@ ei_x_encode_empty_list(&amp;x);</pre>
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_encode_map_header(char *buf, int *index, int arity)</nametext></name>
-      <name><ret>int</ret><nametext>ei_x_encode_map_header(ei_x_buff* x, int arity)</nametext></name>
+      <name since="OTP 17.0"><ret>int</ret><nametext>ei_encode_map_header(char *buf, int *index, int arity)</nametext></name>
+      <name since="OTP 17.0"><ret>int</ret><nametext>ei_x_encode_map_header(ei_x_buff* x, int arity)</nametext></name>
       <fsummary>Encode a map.</fsummary>
       <desc>
         <p>Encodes a map header, with a specified arity. The next
@@ -595,8 +598,8 @@ ei_x_encode_string(&amp;x, "Banana");</pre>
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_encode_pid(char *buf, int *index, const erlang_pid *p)</nametext></name>
-      <name><ret>int</ret><nametext>ei_x_encode_pid(ei_x_buff* x, const erlang_pid *p)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_encode_pid(char *buf, int *index, const erlang_pid *p)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_x_encode_pid(ei_x_buff* x, const erlang_pid *p)</nametext></name>
       <fsummary>Encode a pid.</fsummary>
       <desc>
         <p>Encodes an Erlang process identifier (pid) in the binary
@@ -607,8 +610,8 @@ ei_x_encode_string(&amp;x, "Banana");</pre>
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_encode_port(char *buf, int *index, const erlang_port *p)</nametext></name>
-      <name><ret>int</ret><nametext>ei_x_encode_port(ei_x_buff* x, const erlang_port *p)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_encode_port(char *buf, int *index, const erlang_port *p)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_x_encode_port(ei_x_buff* x, const erlang_port *p)</nametext></name>
       <fsummary>Encode a port.</fsummary>
       <desc>
         <p>Encodes an Erlang port in the binary format. Parameter
@@ -619,8 +622,8 @@ ei_x_encode_string(&amp;x, "Banana");</pre>
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_encode_ref(char *buf, int *index, const erlang_ref *p)</nametext></name>
-      <name><ret>int</ret><nametext>ei_x_encode_ref(ei_x_buff* x, const erlang_ref *p)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_encode_ref(char *buf, int *index, const erlang_ref *p)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_x_encode_ref(ei_x_buff* x, const erlang_ref *p)</nametext></name>
       <fsummary>Encode a ref.</fsummary>
       <desc>
         <p>Encodes an Erlang reference in the binary format. Parameter
@@ -631,10 +634,10 @@ ei_x_encode_string(&amp;x, "Banana");</pre>
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_encode_string(char *buf, int *index, const char *p)</nametext></name>
-      <name><ret>int</ret><nametext>ei_encode_string_len(char *buf, int *index, const char *p, int len)</nametext></name>
-      <name><ret>int</ret><nametext>ei_x_encode_string(ei_x_buff* x, const char *p)</nametext></name>
-      <name><ret>int</ret><nametext>ei_x_encode_string_len(ei_x_buff* x, const char* s, int len)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_encode_string(char *buf, int *index, const char *p)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_encode_string_len(char *buf, int *index, const char *p, int len)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_x_encode_string(ei_x_buff* x, const char *p)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_x_encode_string_len(ei_x_buff* x, const char* s, int len)</nametext></name>
       <fsummary>Encode a string.</fsummary>
       <desc>
         <p>Encodes a string in the binary format. (A string in Erlang
@@ -645,8 +648,8 @@ ei_x_encode_string(&amp;x, "Banana");</pre>
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_encode_term(char *buf, int *index, void *t)</nametext></name>
-      <name><ret>int</ret><nametext>ei_x_encode_term(ei_x_buff* x, void *t)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_encode_term(char *buf, int *index, void *t)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_x_encode_term(ei_x_buff* x, void *t)</nametext></name>
       <fsummary>Encode an <c>erl_interface</c> term.</fsummary>
       <desc>
         <p>Encodes an <c>ETERM</c>, as obtained from
@@ -656,8 +659,8 @@ ei_x_encode_string(&amp;x, "Banana");</pre>
       </desc>
     </func>
     <func>
-      <name><ret>int</ret><nametext>ei_encode_trace(char *buf, int *index, const erlang_trace *p)</nametext></name>
-      <name><ret>int</ret><nametext>ei_x_encode_trace(ei_x_buff* x, const erlang_trace *p)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_encode_trace(char *buf, int *index, const erlang_trace *p)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_x_encode_trace(ei_x_buff* x, const erlang_trace *p)</nametext></name>
       <fsummary>Encode a trace token.</fsummary>
       <desc>
         <p>Encodes an Erlang trace token in the binary format.
@@ -668,8 +671,8 @@ ei_x_encode_string(&amp;x, "Banana");</pre>
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_encode_tuple_header(char *buf, int *index, int arity)</nametext></name>
-      <name><ret>int</ret><nametext>ei_x_encode_tuple_header(ei_x_buff* x, int arity)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_encode_tuple_header(char *buf, int *index, int arity)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_x_encode_tuple_header(ei_x_buff* x, int arity)</nametext></name>
       <fsummary>Encode a tuple.</fsummary>
       <desc>
         <p>Encodes a tuple header, with a specified
@@ -687,8 +690,8 @@ ei_encode_tuple_header(buf, &amp;i, 0);</pre>
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_encode_ulong(char *buf, int *index, unsigned long p)</nametext></name>
-      <name><ret>int</ret><nametext>ei_x_encode_ulong(ei_x_buff* x, unsigned long p)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_encode_ulong(char *buf, int *index, unsigned long p)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_x_encode_ulong(ei_x_buff* x, unsigned long p)</nametext></name>
       <fsummary>Encode unsigned integer.</fsummary>
       <desc>
         <p>Encodes an unsigned long integer in the binary format.
@@ -698,8 +701,8 @@ ei_encode_tuple_header(buf, &amp;i, 0);</pre>
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_encode_ulonglong(char *buf, int *index, unsigned long long p)</nametext></name>
-      <name><ret>int</ret><nametext>ei_x_encode_ulonglong(ei_x_buff* x, unsigned long long p)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_encode_ulonglong(char *buf, int *index, unsigned long long p)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_x_encode_ulonglong(ei_x_buff* x, unsigned long long p)</nametext></name>
       <fsummary>Encode unsigned integer.</fsummary>
       <desc>
         <p>Encodes a GCC <c>unsigned long long</c> or Visual C++
@@ -709,8 +712,8 @@ ei_encode_tuple_header(buf, &amp;i, 0);</pre>
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_encode_version(char *buf, int *index)</nametext></name>
-      <name><ret>int</ret><nametext>ei_x_encode_version(ei_x_buff* x)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_encode_version(char *buf, int *index)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_x_encode_version(ei_x_buff* x)</nametext></name>
       <fsummary>Encode version.</fsummary>
       <desc>
         <p>Encodes a version magic number for the binary format. Must
@@ -719,7 +722,7 @@ ei_encode_tuple_header(buf, &amp;i, 0);</pre>
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_get_type(const char *buf, const int *index, int *type, int *size)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_get_type(const char *buf, const int *index, int *type, int *size)</nametext></name>
       <fsummary>Fetch the type and size of an encoded term.</fsummary>
       <desc>
         <p>Returns the type in <c>type</c> and size in
@@ -733,8 +736,23 @@ ei_encode_tuple_header(buf, &amp;i, 0);</pre>
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_print_term(FILE* fp, const char* buf, int* index)</nametext></name>
-      <name><ret>int</ret><nametext>ei_s_print_term(char** s, const char* buf, int* index)</nametext></name>
+      <name since="OTP 21.3"><ret>int</ret><nametext>ei_init(void)</nametext></name>
+      <fsummary>Initialize the ei library.</fsummary>
+      <desc>
+        <p>Initialize the <c>ei</c> library. This function should be called once
+	(and only once) before calling any other functionality in the <c>ei</c>
+	library. However, note the exception below.</p>
+	<p>If the <c>ei</c> library is used together with the <c>erl_interface</c>
+	library, this function should <em>not</em> be called directly. It will be
+	called by the <c>erl_init()</c> function which should be used to initialize
+	the combination of the two libraries instead.</p>
+	<p>On success zero is returned. On failure a posix error code is returned.</p>
+      </desc>
+    </func>
+
+    <func>
+      <name since=""><ret>int</ret><nametext>ei_print_term(FILE* fp, const char* buf, int* index)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_s_print_term(char** s, const char* buf, int* index)</nametext></name>
       <fsummary>Print a term in clear text.</fsummary>
       <desc>
         <p>Prints a term, in clear text, to the file
@@ -759,7 +777,7 @@ ei_encode_tuple_header(buf, &amp;i, 0);</pre>
     </func>
 
     <func>
-      <name><ret>void</ret><nametext>ei_set_compat_rel(release_number)</nametext></name>
+      <name since=""><ret>void</ret><nametext>ei_set_compat_rel(release_number)</nametext></name>
       <fsummary>Set the ei library in compatibility mode.</fsummary>
       <type>
         <v>unsigned release_number;</v>
@@ -794,7 +812,7 @@ ei_encode_tuple_header(buf, &amp;i, 0);</pre>
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_skip_term(const char* buf, int* index)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_skip_term(const char* buf, int* index)</nametext></name>
       <fsummary>Skip a term.</fsummary>
       <desc>
         <p>Skips a term in the specified buffer;
@@ -815,8 +833,8 @@ ei_encode_tuple_header(buf, &amp;i, 0);</pre>
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_x_append(ei_x_buff* x, const ei_x_buff* x2)</nametext></name>
-      <name><ret>int</ret><nametext>ei_x_append_buf(ei_x_buff* x, const char* buf, int len)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_x_append(ei_x_buff* x, const ei_x_buff* x2)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_x_append_buf(ei_x_buff* x, const char* buf, int len)</nametext></name>
       <fsummary>Append a buffer at the end.</fsummary>
       <desc>
         <p>Appends data at the end of buffer <c>x</c>.</p>
@@ -824,8 +842,8 @@ ei_encode_tuple_header(buf, &amp;i, 0);</pre>
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_x_format(ei_x_buff* x, const char* fmt, ...)</nametext></name>
-      <name><ret>int</ret><nametext>ei_x_format_wo_ver(ei_x_buff* x, const char *fmt, ... )</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_x_format(ei_x_buff* x, const char* fmt, ...)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_x_format_wo_ver(ei_x_buff* x, const char *fmt, ... )</nametext></name>
       <fsummary>Format a term from a format string and parameters.</fsummary>
       <desc>
         <p>Formats a term, given as a string, to a buffer.
@@ -853,7 +871,7 @@ encodes the tuple {numbers,12,3.14159}</pre>
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_x_free(ei_x_buff* x)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_x_free(ei_x_buff* x)</nametext></name>
       <fsummary>Free a buffer.</fsummary>
       <desc>
         <p>Frees an <c>ei_x_buff</c> buffer.
@@ -862,8 +880,8 @@ encodes the tuple {numbers,12,3.14159}</pre>
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_x_new(ei_x_buff* x)</nametext></name>
-      <name><ret>int</ret><nametext>ei_x_new_with_version(ei_x_buff* x)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_x_new(ei_x_buff* x)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_x_new_with_version(ei_x_buff* x)</nametext></name>
       <fsummary>Allocate a new buffer.</fsummary>
       <desc>
         <p>Allocates a new <c>ei_x_buff</c> buffer. The
diff --git a/lib/erl_interface/doc/src/ei_connect.xml b/lib/erl_interface/doc/src/ei_connect.xml
index 607a7cbff4..795f1249b3 100644
--- a/lib/erl_interface/doc/src/ei_connect.xml
+++ b/lib/erl_interface/doc/src/ei_connect.xml
@@ -34,6 +34,9 @@
   <lib>ei_connect</lib>
   <libsummary>Communicate with distributed Erlang.</libsummary>
   <description>
+    <note><p>The support for VxWorks is deprecated as of OTP 22, and
+    will be removed in OTP 23.</p></note>
+    
     <p>This module enables C-programs to communicate with Erlang nodes,
       using the Erlang distribution over TCP/IP.</p>
 
@@ -85,20 +88,288 @@
       the <c>_tmo</c> suffix.</p>
   </section>
 
+  <section>
+    <marker id="ussi"/>
+    <title>User Supplied Socket Implementation</title>
+    <p>By default <c>ei</c> supplies a TCP/IPv4 socket interface
+    that is used when communicating. The user can however plug in
+    his/her own IPv4 socket implementation. This, for example, in order
+    to communicate over TLS. A user supplied socket implementation
+    is plugged in by passing a
+    <seealso marker="#ei_socket_callbacks">callback structure</seealso>
+    to either
+    <seealso marker="#ei_connect_init"><c>ei_connect_init_ussi()</c></seealso>
+    or
+    <seealso marker="#ei_connect_init"><c>ei_connect_xinit_ussi()</c></seealso>.</p>
+    
+    <p>All callbacks in the <c>ei_socket_callbacks</c> structure
+    <em>should</em> return zero on success; and a posix error
+    code on failure.</p>
+    
+    <p>The <c>addr</c> argument of the <c>listen</c>, <c>accept</c>,
+    and <c>connect</c> callbacks refer to appropriate address
+    structure for currently used protocol. Currently <c>ei</c>
+    only supports IPv4. That is, at this time <c>addr</c> always
+    points to a <c>struct sockaddr_in</c> structure.</p>
+
+    <p>The <c>ei_socket_callbacks</c> structure may be enlarged in
+    the future. All fields not set, <em>needs</em> to be zeroed out.</p>
+
+    <marker id="ei_socket_callbacks"/>
+    <code type="none"><![CDATA[
+typedef struct {
+    int flags;
+    int (*socket)(void **ctx, void *setup_ctx);
+    int	(*close)(void *ctx);
+    int (*listen)(void *ctx, void *addr, int *len, int backlog);
+    int (*accept)(void **ctx, void *addr, int *len, unsigned tmo);
+    int (*connect)(void *ctx, void *addr, int len, unsigned tmo);
+    int (*writev)(void *ctx, const void *iov, int iovcnt, ssize_t *len, unsigned tmo);
+    int (*write)(void *ctx, const char *buf, ssize_t *len, unsigned tmo);
+    int (*read)(void *ctx, char *buf, ssize_t *len, unsigned tmo);
+    int (*handshake_packet_header_size)(void *ctx, int *sz);
+    int (*connect_handshake_complete)(void *ctx);
+    int (*accept_handshake_complete)(void *ctx);
+    int (*get_fd)(void *ctx, int *fd);
+} ei_socket_callbacks;
+        ]]></code>
+
+    <taglist>
+      
+      <tag><c>flags</c></tag>
+      <item>
+	<p>Flags informing <c>ei</c> about the behaviour of the
+	callbacks. Flags should be bitwise or:ed together. If no flag,
+	is set, the <c>flags</c> field should contain <c>0</c>. Currently,
+	supported flags:</p>
+	<taglist>
+	  <tag><c>EI_SCLBK_FLG_FULL_IMPL</c></tag>
+	  <item>
+	    <p>
+	      If set, the <c>accept()</c>, <c>connect()</c>,
+	      <c>writev()</c>, <c>write()</c>, and <c>read()</c> callbacks
+	      implements timeouts. The timeout is passed in the <c>tmo</c>
+	      argument and is given in milli seconds. Note that the
+	      <c>tmo</c> argument to these callbacks differ from the
+	      timeout arguments in the <c>ei</c> API. Zero means a zero
+	      timeout. That is, poll and timeout immediately unless the
+	      operation is successful. <c>EI_SCLBK_INF_TMO</c>
+	      (max <c>unsigned</c>) means infinite timeout. The file
+	      descriptor is in blocking mode when a callback is called,
+	      and it must be in blocking mode when the callback returns.
+	    </p>
+	    <p>
+	      If not set, <c>ei</c> will implement the timeout using
+	      <c>select()</c> in order to determine when to call the
+	      callbacks and when to time out. The <c>tmo</c> arguments
+	      of the <c>accept()</c>, <c>connect()</c>, <c>writev()</c>,
+	      <c>write()</c>, and <c>read()</c> callbacks should be
+	      ignored. The callbacks may be called in non-blocking mode.
+	      The callbacks are not allowed to change between blocking
+	      and non-blocking mode. In order for this to work,
+	      <c>select()</c> needs to interact with the socket primitives
+	      used the same way as it interacts with the ordinary socket
+	      primitives. If this is not the case, the callbacks
+	      <em>need</em> to implement timeouts and this flag should
+	      be set.
+	    </p>
+	  </item>
+	</taglist>
+	<p>More flags may be introduced in the future.</p>
+      </item>
+
+      <tag><c>int (*socket)(void **ctx, void *setup_ctx)</c></tag>
+      <item>
+	<p>Create a socket and a context for the socket.</p>
+	
+	<p>On success it should set <c>*ctx</c> to point to a context for
+	the created socket. This context will be passed to all other
+	socket callbacks. This function will be passed the same
+	<c>setup_context</c> as passed to the preceeding
+	<seealso marker="#ei_connect_init"><c>ei_connect_init_ussi()</c></seealso>
+	or
+	<seealso marker="#ei_connect_init"><c>ei_connect_xinit_ussi()</c></seealso>
+	call.</p>
+	
+	<note><p>During the lifetime of a socket, the pointer <c>*ctx</c>
+	<em>has</em> to remain the same. That is, it cannot later be
+	relocated.</p></note>
+	
+	<p>This callback is mandatory.</p>
+      </item>
+      
+      <tag><c>int (*close)(void *ctx)</c></tag>
+      <item>
+	<p>Close the socket identified by <c>ctx</c> and destroy the context.</p>
+	
+	<p>This callback is mandatory.</p>
+      </item>
+      
+      <tag><c>int (*listen)(void *ctx, void *addr, int *len, int backlog)</c></tag>
+      <item>
+	<p>Bind the socket identified by <c>ctx</c> to a local interface
+	and then listen on it.</p>
+	
+	<p>The <c>addr</c> and <c>len</c> arguments are both input and output
+	arguments. When called <c>addr</c> points to an address structure of
+	lenght <c>*len</c> containing information on how to bind the socket.
+	Uppon return this callback should have updated the structure referred
+	by <c>addr</c> with information on how the socket actually was bound.
+	<c>*len</c> should be updated to reflect the size of <c>*addr</c>
+	updated. <c>backlog</c> identifies the size of the backlog for the
+	listen socket.</p>
+	
+	<p>This callback is mandatory.</p>
+      </item>
+      
+      <tag><c>int (*accept)(void **ctx, void *addr, int *len, unsigned tmo)</c></tag>
+      <item>
+	<p>Accept connections on the listen socket identified by
+	<c>*ctx</c>.</p>
+
+	<p>When a connection is accepted, a new context for the accepted
+	connection should be created and <c>*ctx</c> should be updated
+	to point to the new context for the accepted connection. When
+	called <c>addr</c> points to an uninitialized address structure
+	of lenght <c>*len</c>. Uppon return this callback should have
+	updated this structure with information about the client address.
+	<c>*len</c> should be updated to reflect the size of <c>*addr</c>
+	updated.
+	</p>
+
+	<p>If the <c>EI_SCLBK_FLG_FULL_IMPL</c> flag has been set,
+	<c>tmo</c> contains timeout time in milliseconds.</p>
+
+	<note><p>During the lifetime of a socket, the pointer <c>*ctx</c>
+	<em>has</em> to remain the same. That is, it cannot later be
+	relocated.</p></note>
+
+	<p>This callback is mandatory.</p>
+      </item>
+      
+      <tag><c>int (*connect)(void *ctx, void *addr, int len, unsigned tmo)</c></tag>
+      <item>
+	<p>Connect the socket identified by <c>ctx</c> to the address
+	identified by <c>addr</c>.</p>
+
+	<p>When called <c>addr</c> points to an address structure of
+	lenght <c>len</c> containing information on where to connect.</p>
+
+	<p>If the <c>EI_SCLBK_FLG_FULL_IMPL</c> flag has been set,
+	<c>tmo</c> contains timeout time in milliseconds.</p>
+	
+	<p>This callback is mandatory.</p>
+      </item>
+      
+      <tag><c>int (*writev)(void *ctx, const void *iov, long iovcnt, ssize_t *len, unsigned tmo)</c></tag>
+      <item>
+	<p>Write data on the connected socket identified by <c>ctx</c>.</p>
+
+	<p><c>iov</c> points to an array of <c>struct iovec</c> structures of
+	length <c>iovcnt</c> containing data to write to the socket. On success,
+	this callback should set <c>*len</c> to the amount of bytes successfully
+	written on the socket.</p>
+	
+	<p>If the <c>EI_SCLBK_FLG_FULL_IMPL</c> flag has been set,
+	<c>tmo</c> contains timeout time in milliseconds.</p>
+	
+	<p>This callback is optional. Set the <c>writev</c> field
+	in the the <c>ei_socket_callbacks</c> structure to <c>NULL</c> if not
+	implemented.</p>
+      </item>
+      
+      <tag><c>int (*write)(void *ctx, const char *buf, ssize_t *len, unsigned tmo)</c></tag>
+      <item>
+	<p>Write data on the connected socket identified by <c>ctx</c>.</p>
+	
+	<p>When called <c>buf</c> points to a buffer of length <c>*len</c>
+	containing the data to write on the socket. On success, this callback
+	should set <c>*len</c> to the amount of bytes successfully written on
+	the socket.</p>
+
+	<p>If the <c>EI_SCLBK_FLG_FULL_IMPL</c> flag has been set,
+	<c>tmo</c> contains timeout time in milliseconds.</p>
+	
+	<p>This callback is mandatory.</p>
+      </item>
+      
+      <tag><c>int (*read)(void *ctx, char *buf, ssize_t *len, unsigned tmo)</c></tag>
+      <item>
+	<p>Read data on the connected socket identified by <c>ctx</c>.</p>
+	
+	<p><c>buf</c> points to a buffer of length <c>*len</c> where the
+	read data should be placed. On success, this callback should update
+	<c>*len</c> to the amount of bytes successfully read on the socket.</p>
+	
+	<p>If the <c>EI_SCLBK_FLG_FULL_IMPL</c> flag has been set,
+	<c>tmo</c> contains timeout time in milliseconds.</p>
+	
+	<p>This callback is mandatory.</p>
+      </item>
+      
+      <tag><c>int (*handshake_packet_header_size)(void *ctx, int *sz)</c></tag>
+      <item>
+	<p>Inform about handshake packet header size to use during the Erlang
+	distribution handshake.</p>
+
+	<p>On success, <c>*sz</c> should be set to the handshake packet header
+	size to use. Valid values are <c>2</c> and <c>4</c>. Erlang TCP
+	distribution use a handshake packet size of <c>2</c> and Erlang TLS
+	distribution use a handshake packet size of <c>4</c>.</p>
+
+	<p>This callback is mandatory.</p>
+      </item>
+      
+      <tag><c>int (*connect_handshake_complete)(void *ctx)</c></tag>
+      <item>
+	<p>Called when a locally started handshake has completed successfully.</p>
+	
+	<p>This callback is optional. Set the <c>connect_handshake_complete</c> field
+	in the <c>ei_socket_callbacks</c> structure to <c>NULL</c> if not implemented.</p>	
+      </item>
+      
+      <tag><c>int (*accept_handshake_complete)(void *ctx)</c></tag>
+      <item>
+	<p>Called when a remotely started handshake has completed successfully.</p>
+
+	<p>This callback is optional. Set the <c>accept_handshake_complete</c> field in
+	the <c>ei_socket_callbacks</c> structure to <c>NULL</c> if not implemented.</p>
+      </item>
+      
+      <tag><c>int (*get_fd)(void *ctx, int *fd)</c></tag>
+      <item>
+	<p>Inform about file descriptor used by the socket which is identified
+	by <c>ctx</c>.</p>
+
+	<note><p>During the lifetime of a socket, the file descriptor
+	<em>has</em> to remain the same. That is, repeated calls to this
+	callback with the same context <c>should</c> always report the same
+	file descriptor.</p>
+	<p>The file descriptor <em>has</em> to be a real file descriptor.
+	That is, no other operation should be able to get the same file
+	descriptor until it has been released by the <c>close()</c>
+	callback.</p>
+	</note>
+
+	<p>This callback is mandatory.</p>
+      </item>
+    </taglist>
+  </section>
   <funcs>
     <func>
-      <name><ret>struct hostent</ret><nametext>*ei_gethostbyaddr(const char *addr, int len, int type)</nametext></name>
-      <name><ret>struct hostent</ret><nametext>*ei_gethostbyaddr_r(const char *addr, int length,  int type,  struct hostent *hostp, char *buffer,   int buflen,  int *h_errnop)</nametext></name>
-      <name><ret>struct hostent</ret><nametext>*ei_gethostbyname(const char *name)</nametext></name>
-      <name><ret>struct hostent</ret><nametext>*ei_gethostbyname_r(const char *name,  struct hostent *hostp,  char *buffer,  int buflen,  int *h_errnop)</nametext></name>
+      <name since=""><ret>struct hostent *</ret><nametext>ei_gethostbyaddr(const char *addr, int len, int type)</nametext></name>
+      <name since=""><ret>struct hostent *</ret><nametext>ei_gethostbyaddr_r(const char *addr, int length,  int type,  struct hostent *hostp, char *buffer,   int buflen,  int *h_errnop)</nametext></name>
+      <name since=""><ret>struct hostent *</ret><nametext>ei_gethostbyname(const char *name)</nametext></name>
+      <name since=""><ret>struct hostent *</ret><nametext>ei_gethostbyname_r(const char *name,  struct hostent *hostp,  char *buffer,  int buflen,  int *h_errnop)</nametext></name>
       <fsummary>Name lookup functions.</fsummary>
       <desc>
         <p>Convenience functions for some common name lookup functions.</p>
       </desc>
     </func>
+    
 
     <func>
-      <name><ret>int</ret><nametext>ei_accept(ei_cnode *ec, int listensock, ErlConnect *conp)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_accept(ei_cnode *ec, int listensock, ErlConnect *conp)</nametext></name>
       <fsummary>Accept a connection from another node.</fsummary>
       <desc>
         <p>Used by a server process to accept a
@@ -130,7 +401,7 @@ typedef struct {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_accept_tmo(ei_cnode *ec, int listensock, ErlConnect *conp, unsigned timeout_ms)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_accept_tmo(ei_cnode *ec, int listensock, ErlConnect *conp, unsigned timeout_ms)</nametext></name>
       <fsummary>Accept a connection from another node with optional
         time-out.</fsummary>
       <desc>
@@ -141,8 +412,16 @@ typedef struct {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_connect(ei_cnode* ec, char *nodename)</nametext></name>
-      <name><ret>int</ret><nametext>ei_xconnect(ei_cnode* ec, Erl_IpAddr adr, char *alivename)</nametext></name>
+      <name since="OTP 21.3"><ret>int</ret><nametext>ei_close_connection(int fd)</nametext></name>
+      <fsummary>Close a connection.</fsummary>
+      <desc>
+        <p>Closes a previously opened connection or listen socket.</p>
+      </desc>
+    </func>
+
+    <func>
+      <name since=""><ret>int</ret><nametext>ei_connect(ei_cnode* ec, char *nodename)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_xconnect(ei_cnode* ec, Erl_IpAddr adr, char *alivename)</nametext></name>
       <fsummary>Establish a connection to an Erlang node.</fsummary>
       <desc>
         <p>Sets up a connection to an Erlang node.</p>
@@ -192,8 +471,10 @@ fd = ei_xconnect(&ec, &addr, ALIVE);
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_connect_init(ei_cnode* ec, const char* this_node_name, const char *cookie, short creation)</nametext></name>
-      <name><ret>int</ret><nametext>ei_connect_xinit(ei_cnode* ec, const char *thishostname, const char *thisalivename, const char *thisnodename, Erl_IpAddr thisipaddr, const char *cookie, short creation)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_connect_init(ei_cnode* ec, const char* this_node_name, const char *cookie, short creation)</nametext></name>
+      <name since="OTP 21.3"><ret>int</ret><nametext>ei_connect_init_ussi(ei_cnode* ec, const char* this_node_name, const char *cookie, short creation, ei_socket_callbacks *cbs, int cbs_sz, void *setup_context)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_connect_xinit(ei_cnode* ec, const char *thishostname, const char *thisalivename, const char *thisnodename, Erl_IpAddr thisipaddr, const char *cookie, short creation)</nametext></name>
+      <name since="OTP 21.3"><ret>int</ret><nametext>ei_connect_xinit_ussi(ei_cnode* ec, const char *thishostname, const char *thisalivename, const char *thisnodename, Erl_IpAddr thisipaddr, const char *cookie, short creation, ei_socket_callbacks *cbs, int cbs_sz, void *setup_context)</nametext></name>
       <fsummary>Initialize for a connection.</fsummary>
       <desc>
         <p>Initializes the <c>ec</c> structure, to
@@ -236,6 +517,21 @@ fd = ei_xconnect(&ec, &addr, ALIVE);
           <item>
             <p><c>thispaddr</c> if the IP address of the host.</p>
           </item>
+	  <item>
+	    <p><c>cbs</c> is a pointer to a
+	    <seealso marker="#ei_socket_callbacks">callback structure</seealso>
+	    implementing and alternative socket interface.</p>
+	  </item>
+	  <item>
+	    <p><c>cbs_sz</c> is the size of the structure
+	    pointed to by <c>cbs</c>.</p>
+	  </item>
+	  <item>
+	    <p><c>setup_context</c> is a pointer to a structure that
+	    will be passed as second argument to the <c>socket</c> callback
+	    in the <c>cbs</c> structure.</p>
+	  </item>
+
         </list>
         <p>A C-node acting as a server is assigned a creation
           number when it calls <c>ei_publish()</c>.</p>
@@ -273,8 +569,8 @@ if (ei_connect_init(&ec, "madonna", "cookie...", n++) < 0) {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_connect_tmo(ei_cnode* ec, char *nodename, unsigned timeout_ms)</nametext></name>
-      <name><ret>int</ret><nametext>ei_xconnect_tmo(ei_cnode* ec, Erl_IpAddr adr, char *alivename, unsigned timeout_ms)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_connect_tmo(ei_cnode* ec, char *nodename, unsigned timeout_ms)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_xconnect_tmo(ei_cnode* ec, Erl_IpAddr adr, char *alivename, unsigned timeout_ms)</nametext></name>
       <fsummary>Establish a connection to an Erlang node with optional
         time-out.</fsummary>
       <desc>
@@ -286,8 +582,8 @@ if (ei_connect_init(&ec, "madonna", "cookie...", n++) < 0) {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_get_tracelevel(void)</nametext></name>
-      <name><ret>void</ret><nametext>ei_set_tracelevel(int level)</nametext></name>
+      <name since="OTP R13B04"><ret>int</ret><nametext>ei_get_tracelevel(void)</nametext></name>
+      <name since="OTP R13B04"><ret>void</ret><nametext>ei_set_tracelevel(int level)</nametext></name>
       <fsummary>Get and set functions for tracing.</fsummary>
       <desc>
         <p>Used to set tracing on the distribution. The levels are different
@@ -299,7 +595,46 @@ if (ei_connect_init(&ec, "madonna", "cookie...", n++) < 0) {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_publish(ei_cnode *ec, int port)</nametext></name>
+      <name since="OTP 21.3"><ret>int</ret><nametext>ei_listen(ei_cnode *ec, int *port, int backlog)</nametext></name>
+      <name since="OTP 21.3"><ret>int</ret><nametext>ei_xlisten(ei_cnode *ec, Erl_IpAddr adr, int *port, int backlog)</nametext></name>
+      <fsummary>Create a listen socket.</fsummary>
+      <desc>
+        <p>Used by a server process to setup a listen socket which
+	later can be used for accepting connections from client processes.
+	</p>
+        <list type="bulleted">
+          <item>
+            <p><c>ec</c> is the C-node structure.</p>
+          </item>
+	  <item>
+	    <p><c>adr</c> is local interface to bind to.</p>
+	  </item>
+          <item>
+            <p><c>port</c> is a pointer to an integer containing the
+	    port number to bind to. If <c>*port</c> equals <c>0</c>
+	    when calling <c>ei_listen()</c>, the socket will be bound to
+	    an ephemeral port. On success, <c>ei_listen()</c> will update
+	    the value of <c>*port</c> to the port actually bound to.
+	    </p>
+          </item>
+          <item>
+            <p><c>backlog</c> is maximum backlog of pending connections.</p>
+          </item>
+        </list>
+	<p><c>ei_listen</c> will create a socket, bind to a port on the
+	local interface identified by <c>adr</c> (or all local interfaces if
+	<c>ei_listen()</c> is called), and mark the socket as a passive socket
+	(that is, a socket that will be used for accepting incoming connections).
+	</p>
+	<p>
+	  On success, a file descriptor is returned which can be used in a call to
+	  <c>ei_accept()</c>. On failure, <c>ERL_ERROR</c> is returned and
+        <c>erl_errno</c> is set to <c>EIO</c>.</p>
+      </desc>
+    </func>
+
+    <func>
+      <name since=""><ret>int</ret><nametext>ei_publish(ei_cnode *ec, int port)</nametext></name>
       <fsummary>Publish a node name.</fsummary>
       <desc>
         <p>Used by a server process to register
@@ -336,7 +671,7 @@ if (ei_connect_init(&ec, "madonna", "cookie...", n++) < 0) {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_publish_tmo(ei_cnode *ec, int port, unsigned timeout_ms)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_publish_tmo(ei_cnode *ec, int port, unsigned timeout_ms)</nametext></name>
       <fsummary>Publish a node name with optional time-out.</fsummary>
       <desc>
         <p>Equivalent to
@@ -346,7 +681,7 @@ if (ei_connect_init(&ec, "madonna", "cookie...", n++) < 0) {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_receive(int fd, unsigned char* bufp, int bufsize)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_receive(int fd, unsigned char* bufp, int bufsize)</nametext></name>
       <fsummary>Receive a message.</fsummary>
       <desc>
         <p>Receives a message consisting of a sequence
@@ -387,7 +722,7 @@ if (ei_connect_init(&ec, "madonna", "cookie...", n++) < 0) {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_receive_encoded(int fd, char **mbufp, int *bufsz,  erlang_msg *msg, int *msglen)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_receive_encoded(int fd, char **mbufp, int *bufsz,  erlang_msg *msg, int *msglen)</nametext></name>
       <fsummary>Obsolete function for receiving a message.</fsummary>
       <desc>
         <p>This function is retained for compatibility with code
@@ -417,7 +752,7 @@ if (ei_connect_init(&ec, "madonna", "cookie...", n++) < 0) {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_receive_encoded_tmo(int fd, char **mbufp, int *bufsz,  erlang_msg *msg, int *msglen, unsigned timeout_ms)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_receive_encoded_tmo(int fd, char **mbufp, int *bufsz,  erlang_msg *msg, int *msglen, unsigned timeout_ms)</nametext></name>
       <fsummary>Obsolete function for receiving a message with time-out.
       </fsummary>
       <desc>
@@ -428,8 +763,8 @@ if (ei_connect_init(&ec, "madonna", "cookie...", n++) < 0) {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_receive_msg(int fd, erlang_msg* msg, ei_x_buff* x)</nametext></name>
-      <name><ret>int</ret><nametext>ei_xreceive_msg(int fd, erlang_msg* msg, ei_x_buff* x)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_receive_msg(int fd, erlang_msg* msg, ei_x_buff* x)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_xreceive_msg(int fd, erlang_msg* msg, ei_x_buff* x)</nametext></name>
       <fsummary>Receive a message.</fsummary>
       <desc>
         <p>Receives a message to the buffer in <c>x</c>.
@@ -493,8 +828,8 @@ typedef struct {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_receive_msg_tmo(int fd, erlang_msg* msg, ei_x_buff* x, unsigned imeout_ms)</nametext></name>
-      <name><ret>int</ret><nametext>ei_xreceive_msg_tmo(int fd, erlang_msg* msg, ei_x_buff* x, unsigned timeout_ms)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_receive_msg_tmo(int fd, erlang_msg* msg, ei_x_buff* x, unsigned imeout_ms)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_xreceive_msg_tmo(int fd, erlang_msg* msg, ei_x_buff* x, unsigned timeout_ms)</nametext></name>
       <fsummary>Receive a message with optional time-out.</fsummary>
       <desc>
         <p>Equivalent to <c>ei_receive_msg</c> and <c>ei_xreceive_msg</c>
@@ -504,7 +839,7 @@ typedef struct {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_receive_tmo(int fd, unsigned char* bufp, int bufsize, unsigned timeout_ms)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_receive_tmo(int fd, unsigned char* bufp, int bufsize, unsigned timeout_ms)</nametext></name>
       <fsummary>Receive a message with optional time-out.</fsummary>
       <desc>
         <p>Equivalent to
@@ -514,7 +849,7 @@ typedef struct {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_reg_send(ei_cnode* ec, int fd, char* server_name, char* buf, int len)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_reg_send(ei_cnode* ec, int fd, char* server_name, char* buf, int len)</nametext></name>
       <fsummary>Send a message to a registered name.</fsummary>
       <desc>
         <p>Sends an Erlang term to a registered process.</p>
@@ -546,7 +881,7 @@ if (ei_reg_send(&ec, fd, x.buff, x.index) < 0)
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_reg_send_tmo(ei_cnode* ec, int fd, char* server_name, char* buf, int len, unsigned timeout_ms)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_reg_send_tmo(ei_cnode* ec, int fd, char* server_name, char* buf, int len, unsigned timeout_ms)</nametext></name>
       <fsummary>Send a message to a registered name with optional time-out
       </fsummary>
       <desc>
@@ -557,9 +892,9 @@ if (ei_reg_send(&ec, fd, x.buff, x.index) < 0)
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_rpc(ei_cnode *ec, int fd, char *mod, char *fun, const char *argbuf, int argbuflen, ei_x_buff *x)</nametext></name>
-      <name><ret>int</ret><nametext>ei_rpc_to(ei_cnode *ec, int fd, char *mod, char *fun, const char *argbuf, int argbuflen)</nametext></name>
-      <name><ret>int</ret><nametext>ei_rpc_from(ei_cnode *ec, int fd, int timeout, erlang_msg *msg, ei_x_buff *x)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_rpc(ei_cnode *ec, int fd, char *mod, char *fun, const char *argbuf, int argbuflen, ei_x_buff *x)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_rpc_to(ei_cnode *ec, int fd, char *mod, char *fun, const char *argbuf, int argbuflen)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_rpc_from(ei_cnode *ec, int fd, int timeout, erlang_msg *msg, ei_x_buff *x)</nametext></name>
       <fsummary>Remote Procedure Call from C to Erlang.</fsummary>
       <desc>
         <p>Supports calling Erlang functions on remote nodes.
@@ -658,7 +993,7 @@ if (ei_decode_version(result.buff, &index) < 0
     </func>
 
     <func>
-      <name><ret>erlang_pid *</ret><nametext>ei_self(ei_cnode *ec)</nametext></name>
+      <name since=""><ret>erlang_pid *</ret><nametext>ei_self(ei_cnode *ec)</nametext></name>
       <fsummary>Retrieve the pid of the C-node.</fsummary>
       <desc>
         <p>Retrieves the pid of the C-node. Every C-node
@@ -671,7 +1006,7 @@ if (ei_decode_version(result.buff, &index) < 0
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_send(int fd, erlang_pid* to, char* buf, int len)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_send(int fd, erlang_pid* to, char* buf, int len)</nametext></name>
       <fsummary>Send a message.</fsummary>
       <desc>
         <p>Sends an Erlang term to a process.</p>
@@ -692,7 +1027,7 @@ if (ei_decode_version(result.buff, &index) < 0
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_send_encoded(int fd, erlang_pid* to, char* buf, int len)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_send_encoded(int fd, erlang_pid* to, char* buf, int len)</nametext></name>
       <fsummary>Obsolete function to send a message.</fsummary>
       <desc>
         <p>Works exactly as <c>ei_send</c>, the alternative name is retained for
@@ -702,7 +1037,7 @@ if (ei_decode_version(result.buff, &index) < 0
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_send_encoded_tmo(int fd, erlang_pid* to, char* buf, int len, unsigned timeout_ms)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_send_encoded_tmo(int fd, erlang_pid* to, char* buf, int len, unsigned timeout_ms)</nametext></name>
       <fsummary>Obsolete function to send a message with optional time-out.
       </fsummary>
       <desc>
@@ -713,7 +1048,7 @@ if (ei_decode_version(result.buff, &index) < 0
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_send_reg_encoded(int fd, const erlang_pid *from, const char *to, const char *buf, int len)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_send_reg_encoded(int fd, const erlang_pid *from, const char *to, const char *buf, int len)</nametext></name>
       <fsummary>Obsolete function to send a message to a registered name.
       </fsummary>
       <desc>
@@ -741,7 +1076,7 @@ self->num = fd;
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_send_reg_encoded_tmo(int fd, const erlang_pid *from, const char *to, const char *buf, int len)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_send_reg_encoded_tmo(int fd, const erlang_pid *from, const char *to, const char *buf, int len)</nametext></name>
       <fsummary>Obsolete function to send a message to a registered name with
         time-out.</fsummary>
       <desc>
@@ -752,7 +1087,7 @@ self->num = fd;
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_send_tmo(int fd, erlang_pid* to, char* buf, int len, unsigned timeout_ms)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_send_tmo(int fd, erlang_pid* to, char* buf, int len, unsigned timeout_ms)</nametext></name>
       <fsummary>Send a message with optional time-out.</fsummary>
       <desc>
         <p>Equivalent to
@@ -762,9 +1097,9 @@ self->num = fd;
     </func>
 
     <func>
-      <name><ret>const char *</ret><nametext>ei_thisnodename(ei_cnode *ec)</nametext></name>
-      <name><ret>const char *</ret><nametext>ei_thishostname(ei_cnode *ec)</nametext></name>
-      <name><ret>const char *</ret><nametext>ei_thisalivename(ei_cnode *ec)</nametext></name>
+      <name since=""><ret>const char *</ret><nametext>ei_thisnodename(ei_cnode *ec)</nametext></name>
+      <name since=""><ret>const char *</ret><nametext>ei_thishostname(ei_cnode *ec)</nametext></name>
+      <name since=""><ret>const char *</ret><nametext>ei_thisalivename(ei_cnode *ec)</nametext></name>
       <fsummary>Retrieve some values.</fsummary>
       <desc>
         <p>Can be used to retrieve information about
@@ -779,7 +1114,7 @@ self->num = fd;
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_unpublish(ei_cnode *ec)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_unpublish(ei_cnode *ec)</nametext></name>
       <fsummary>Forcefully unpublish a node name.</fsummary>
       <desc>
         <p>Can be called by a process to unregister a
@@ -802,7 +1137,7 @@ self->num = fd;
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_unpublish_tmo(ei_cnode *ec, unsigned timeout_ms)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_unpublish_tmo(ei_cnode *ec, unsigned timeout_ms)</nametext></name>
       <fsummary>Unpublish a node name with optional time-out.</fsummary>
       <desc>
         <p>Equivalent to
diff --git a/lib/erl_interface/doc/src/ei_users_guide.xml b/lib/erl_interface/doc/src/ei_users_guide.xml
index 0eed50b50b..7ca10d1a99 100644
--- a/lib/erl_interface/doc/src/ei_users_guide.xml
+++ b/lib/erl_interface/doc/src/ei_users_guide.xml
@@ -34,6 +34,18 @@
   </header>
 
   <section>
+    <title>Deprecation and Removal</title>
+    <note><p>The support for VxWorks is deprecated as of OTP 22, and
+    will be removed in OTP 23.</p></note>
+    <note><p>The old legacy <c>erl_interface</c> library (functions
+    with prefix <c>erl_</c>) is deprecated as of OTP 22, and will be
+    removed in OTP 23. This does not apply to the <c>ei</c>
+    library. Reasonably new <c>gcc</c> compilers will issue deprecation
+    warnings. In order to disable these warnings, define the macro
+    <c>EI_NO_DEPR_WARN</c>.</p></note>
+  </section>
+
+  <section>
     <title>Introduction</title>
     <p>The <c>Erl_Interface</c> library contains functions that help you
       integrate programs written in C and Erlang. The functions in
@@ -162,12 +174,20 @@ $ ld -L/usr/local/otp/lib/erl_interface-3.2.3/
   </section>
 
   <section>
-    <title>Initializing the Erl_Interface Library</title>
-    <p>Before calling any of the other <c>Erl_Interface</c> functions, call
-      <c>erl_init()</c> exactly once to initialize the library.
+    <title>Initializing the Libraries</title>
+    <p>
+      Before calling any of the other functions in the <c>erl_interface</c>
+      and <c>ei</c> libraries, call <c>erl_init()</c> exactly once to initialize
+      both libraries.
       <c>erl_init()</c> takes two arguments. However, the arguments
-      are no longer used by <c>Erl_Interface</c> and are therefore to be
-      specified as <c>erl_init(NULL,0)</c>.</p>
+      are no longer used by <c>erl_interface</c> and are therefore to be
+      specified as <c>erl_init(NULL,0)</c>.
+    </p>
+    <p>
+      If you only use the <c>ei</c> library, instead initialize it by calling
+      <c>ei_init()</c> exactly once before calling any other functions in
+      the <c>ei</c> library.
+    </p>
   </section>
 
   <section>
diff --git a/lib/erl_interface/doc/src/erl_connect.xml b/lib/erl_interface/doc/src/erl_connect.xml
index 76ef6588c2..9492a82864 100644
--- a/lib/erl_interface/doc/src/erl_connect.xml
+++ b/lib/erl_interface/doc/src/erl_connect.xml
@@ -35,6 +35,15 @@
   <lib>erl_connect</lib>
   <libsummary>Communicate with distributed Erlang.</libsummary>
   <description>
+    <note><p>The support for VxWorks is deprecated as of OTP 22, and
+    will be removed in OTP 23.</p></note>
+    <note><p>The old legacy <c>erl_interface</c> library (functions
+    with prefix <c>erl_</c>) is deprecated as of OTP 22, and will be
+    removed in OTP 23. This does not apply to the <c>ei</c>
+    library. Reasonably new <c>gcc</c> compilers will issue deprecation
+    warnings. In order to disable these warnings, define the macro
+    <c>EI_NO_DEPR_WARN</c>.</p></note>
+    
     <p>This module provides support for communication between distributed
       Erlang nodes and C-nodes, in a manner that is transparent to Erlang
       processes.</p>
@@ -49,7 +58,7 @@
 
   <funcs>
     <func>
-      <name><ret>int</ret><nametext>erl_accept(listensock, conp)</nametext></name>
+      <name since=""><ret>int</ret><nametext>erl_accept(listensock, conp)</nametext></name>
       <fsummary>Accept a connection.</fsummary>
       <type>
         <v>int listensock;</v>
@@ -78,7 +87,7 @@ typedef struct {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>erl_close_connection(fd)</nametext></name>
+      <name since=""><ret>int</ret><nametext>erl_close_connection(fd)</nametext></name>
       <fsummary>Close a connection to an Erlang node.</fsummary>
       <type>
         <v>int fd;</v>
@@ -95,8 +104,8 @@ typedef struct {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>erl_connect(node)</nametext></name>
-      <name><ret>int</ret><nametext>erl_xconnect(addr, alive)</nametext></name>
+      <name since=""><ret>int</ret><nametext>erl_connect(node)</nametext></name>
+      <name since=""><ret>int</ret><nametext>erl_xconnect(addr, alive)</nametext></name>
       <fsummary>Establish a connection to an Erlang node.</fsummary>
       <type>
         <v>char *node, *alive;</v>
@@ -149,8 +158,8 @@ erl_xconnect( &addr , ALIVE );
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>erl_connect_init(number, cookie, creation)</nametext></name>
-      <name><ret>int</ret><nametext>erl_connect_xinit(host, alive, node, addr, cookie, creation)</nametext></name>
+      <name since=""><ret>int</ret><nametext>erl_connect_init(number, cookie, creation)</nametext></name>
+      <name since=""><ret>int</ret><nametext>erl_connect_xinit(host, alive, node, addr, cookie, creation)</nametext></name>
       <fsummary>Initialize communication.</fsummary>
       <type>
         <v>int number;</v>
@@ -246,7 +255,7 @@ if (!erl_connect_init(17, "samplecookiestring...", 0))
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>erl_publish(port)</nametext></name>
+      <name since=""><ret>int</ret><nametext>erl_publish(port)</nametext></name>
       <fsummary>Publish a node name.</fsummary>
       <type>
         <v>int port;</v>
@@ -277,7 +286,7 @@ if (!erl_connect_init(17, "samplecookiestring...", 0))
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>erl_receive(fd, bufp, bufsize)</nametext></name>
+      <name since=""><ret>int</ret><nametext>erl_receive(fd, bufp, bufsize)</nametext></name>
       <fsummary>Receive a message.</fsummary>
       <type>
         <v>int fd;</v>
@@ -316,7 +325,7 @@ if (!erl_connect_init(17, "samplecookiestring...", 0))
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>erl_receive_msg(fd, bufp, bufsize, emsg)</nametext></name>
+      <name since=""><ret>int</ret><nametext>erl_receive_msg(fd, bufp, bufsize, emsg)</nametext></name>
       <fsummary>Receive and decode a message.</fsummary>
       <type>
         <v>int fd;</v>
@@ -411,7 +420,7 @@ typedef struct {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>erl_reg_send(fd, to, msg)</nametext></name>
+      <name since=""><ret>int</ret><nametext>erl_reg_send(fd, to, msg)</nametext></name>
       <fsummary>Send a message to a registered name.</fsummary>
       <type>
         <v>int fd;</v>
@@ -439,9 +448,9 @@ typedef struct {
     </func>
 
     <func>
-      <name><ret>ETERM *</ret><nametext>erl_rpc(fd, mod, fun, args)</nametext></name>
-      <name><ret>int</ret><nametext>erl_rpc_from(fd, timeout, emsg)</nametext></name>
-      <name><ret>int</ret><nametext>erl_rpc_to(fd, mod, fun, args)</nametext></name>
+      <name since=""><ret>ETERM *</ret><nametext>erl_rpc(fd, mod, fun, args)</nametext></name>
+      <name since=""><ret>int</ret><nametext>erl_rpc_from(fd, timeout, emsg)</nametext></name>
+      <name since=""><ret>int</ret><nametext>erl_rpc_to(fd, mod, fun, args)</nametext></name>
       <fsummary>Remote Procedure Call.</fsummary>
       <type>
         <v>int fd, timeout;</v>
@@ -511,7 +520,7 @@ typedef struct {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>erl_send(fd, to, msg)</nametext></name>
+      <name since=""><ret>int</ret><nametext>erl_send(fd, to, msg)</nametext></name>
       <fsummary>Send a message.</fsummary>
       <type>
         <v>int fd;</v>
@@ -541,11 +550,11 @@ typedef struct {
     </func>
 
     <func>
-      <name><ret>const char *</ret><nametext>erl_thisalivename()</nametext></name>
-      <name><ret>const char *</ret><nametext>erl_thiscookie()</nametext></name>
-      <name><ret>short</ret><nametext>erl_thiscreation()</nametext></name>
-      <name><ret>const char *</ret><nametext>erl_thishostname()</nametext></name>
-      <name><ret>const char *</ret><nametext>erl_thisnodename()</nametext></name>
+      <name since=""><ret>const char *</ret><nametext>erl_thisalivename()</nametext></name>
+      <name since=""><ret>const char *</ret><nametext>erl_thiscookie()</nametext></name>
+      <name since=""><ret>short</ret><nametext>erl_thiscreation()</nametext></name>
+      <name since=""><ret>const char *</ret><nametext>erl_thishostname()</nametext></name>
+      <name since=""><ret>const char *</ret><nametext>erl_thisnodename()</nametext></name>
       <fsummary>Retrieve some values.</fsummary>
       <desc>
         <p>Retrieves information about
@@ -556,7 +565,7 @@ typedef struct {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>erl_unpublish(alive)</nametext></name>
+      <name since=""><ret>int</ret><nametext>erl_unpublish(alive)</nametext></name>
       <fsummary>Forcefully unpublish a node name.</fsummary>
       <type>
         <v>char *alive;</v>
@@ -583,7 +592,7 @@ typedef struct {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>erl_xreceive_msg(fd, bufpp, bufsizep, emsg)</nametext></name>
+      <name since=""><ret>int</ret><nametext>erl_xreceive_msg(fd, bufpp, bufsizep, emsg)</nametext></name>
       <fsummary>Receive and decode a message.</fsummary>
       <type>
         <v>int fd;</v>
@@ -616,10 +625,10 @@ typedef struct {
     </func>
 
     <func>
-      <name><ret>struct hostent</ret><nametext>*erl_gethostbyaddr(addr, length, type)</nametext></name>
-      <name><ret>struct hostent</ret><nametext>*erl_gethostbyaddr_r(addr, length, type, hostp, buffer, buflen, h_errnop)</nametext></name>
-      <name><ret>struct hostent</ret><nametext>*erl_gethostbyname(name)</nametext></name>
-      <name><ret>struct hostent</ret><nametext>*erl_gethostbyname_r(name, hostp, buffer, buflen, h_errnop)</nametext></name>
+      <name since=""><ret>struct hostent *</ret><nametext>erl_gethostbyaddr(addr, length, type)</nametext></name>
+      <name since=""><ret>struct hostent *</ret><nametext>erl_gethostbyaddr_r(addr, length, type, hostp, buffer, buflen, h_errnop)</nametext></name>
+      <name since=""><ret>struct hostent *</ret><nametext>erl_gethostbyname(name)</nametext></name>
+      <name since=""><ret>struct hostent *</ret><nametext>erl_gethostbyname_r(name, hostp, buffer, buflen, h_errnop)</nametext></name>
 
       <fsummary>Name lookup functions.</fsummary>
       <type>
diff --git a/lib/erl_interface/doc/src/erl_error.xml b/lib/erl_interface/doc/src/erl_error.xml
index 8139c9b343..6fac94e442 100644
--- a/lib/erl_interface/doc/src/erl_error.xml
+++ b/lib/erl_interface/doc/src/erl_error.xml
@@ -47,7 +47,7 @@
 
   <funcs>
     <func>
-      <name><ret>void</ret><nametext>erl_err_msg(FormatStr, ... )</nametext></name>
+      <name since=""><ret>void</ret><nametext>erl_err_msg(FormatStr, ... )</nametext></name>
       <fsummary>Non-fatal error, and not system call error.</fsummary>
       <type>
         <v>const char *FormatStr;</v>
@@ -59,7 +59,7 @@
     </func>
 
     <func>
-      <name><ret>void</ret><nametext>erl_err_quit(FormatStr, ... )</nametext></name>
+      <name since=""><ret>void</ret><nametext>erl_err_quit(FormatStr, ... )</nametext></name>
       <fsummary>Fatal error, but not system call error.</fsummary>
       <type>
         <v>const char *FormatStr;</v>
@@ -73,7 +73,7 @@
     </func>
 
     <func>
-      <name><ret>void</ret><nametext>erl_err_ret(FormatStr, ... )</nametext></name>
+      <name since=""><ret>void</ret><nametext>erl_err_ret(FormatStr, ... )</nametext></name>
       <fsummary>Non-fatal system call error.</fsummary>
       <type>
         <v>const char *FormatStr;</v>
@@ -86,7 +86,7 @@
     </func>
 
     <func>
-      <name><ret>void</ret><nametext>erl_err_sys(FormatStr, ... )</nametext></name>
+      <name since=""><ret>void</ret><nametext>erl_err_sys(FormatStr, ... )</nametext></name>
       <fsummary>Fatal system call error.</fsummary>
       <type>
         <v>const char *FormatStr;</v>
@@ -113,7 +113,7 @@
 
   <funcs>
     <func>
-      <name><ret>volatile int</ret><nametext>erl_errno</nametext></name>
+      <name since=""><ret>volatile int</ret><nametext>erl_errno</nametext></name>
       <fsummary>Variable <c>erl_errno</c> contains the
         Erl_Interface error number. You can change the value if you wish.
       </fsummary>
diff --git a/lib/erl_interface/doc/src/erl_eterm.xml b/lib/erl_interface/doc/src/erl_eterm.xml
index 9a05196a70..295760b4e6 100644
--- a/lib/erl_interface/doc/src/erl_eterm.xml
+++ b/lib/erl_interface/doc/src/erl_eterm.xml
@@ -35,6 +35,15 @@
   <lib>erl_eterm</lib>
   <libsummary>Functions for Erlang term construction.</libsummary>
   <description>
+    <note><p>The support for VxWorks is deprecated as of OTP 22, and
+    will be removed in OTP 23.</p></note>
+    <note><p>The old legacy <c>erl_interface</c> library (functions
+    with prefix <c>erl_</c>) is deprecated as of OTP 22, and will be
+    removed in OTP 23. This does not apply to the <c>ei</c>
+    library. Reasonably new <c>gcc</c> compilers will issue deprecation
+    warnings. In order to disable these warnings, define the macro
+    <c>EI_NO_DEPR_WARN</c>.</p></note>
+    
     <p>This module provides functions for creating and manipulating
       Erlang terms.</p>
 
@@ -142,7 +151,7 @@
 
   <funcs>
     <func>
-      <name><ret>ETERM *</ret><nametext>erl_cons(head, tail)</nametext></name>
+      <name since=""><ret>ETERM *</ret><nametext>erl_cons(head, tail)</nametext></name>
       <fsummary>Prepend a term to the head of a list.</fsummary>
       <type>
         <v>ETERM *head;</v>
@@ -181,7 +190,7 @@ erl_free_compound(list);
     </func>
 
     <func>
-      <name><ret>ETERM *</ret><nametext>erl_copy_term(term)</nametext></name>
+      <name since=""><ret>ETERM *</ret><nametext>erl_copy_term(term)</nametext></name>
       <fsummary>Create a copy of an Erlang term.</fsummary>
       <type>
         <v>ETERM *term;</v>
@@ -193,7 +202,7 @@ erl_free_compound(list);
     </func>
 
     <func>
-      <name><ret>ETERM *</ret><nametext>erl_element(position, tuple)</nametext></name>
+      <name since=""><ret>ETERM *</ret><nametext>erl_element(position, tuple)</nametext></name>
       <fsummary>Extract an element from an Erlang tuple.</fsummary>
       <type>
         <v>int position;</v>
@@ -215,7 +224,7 @@ erl_free_compound(list);
     </func>
 
     <func>
-      <name><ret>ETERM *</ret><nametext>erl_hd(list)</nametext></name>
+      <name since=""><ret>ETERM *</ret><nametext>erl_hd(list)</nametext></name>
       <fsummary>Extract the first element from a list.</fsummary>
       <type>
         <v>ETERM *list;</v>
@@ -230,7 +239,7 @@ erl_free_compound(list);
     </func>
 
     <func>
-      <name><ret>void</ret><nametext>erl_init(NULL, 0)</nametext></name>
+      <name since=""><ret>void</ret><nametext>erl_init(NULL, 0)</nametext></name>
       <fsummary>Initialization routine.</fsummary>
       <type>
         <v>void *NULL;</v>
@@ -245,7 +254,7 @@ erl_free_compound(list);
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>erl_iolist_length(list)</nametext></name>
+      <name since=""><ret>int</ret><nametext>erl_iolist_length(list)</nametext></name>
       <fsummary>Return the length of an I/O list.</fsummary>
       <type>
         <v>ETERM *list;</v>
@@ -262,7 +271,7 @@ erl_free_compound(list);
     </func>
 
     <func>
-      <name><ret>ETERM *</ret><nametext>erl_iolist_to_binary(term)</nametext></name>
+      <name since=""><ret>ETERM *</ret><nametext>erl_iolist_to_binary(term)</nametext></name>
       <fsummary>Convert an I/O list to a binary.</fsummary>
       <type>
         <v>ETERM *list;</v>
@@ -289,7 +298,7 @@ iohead ::= Binary
     </func>
 
     <func>
-      <name><ret>char *</ret><nametext>erl_iolist_to_string(list)</nametext></name>
+      <name since=""><ret>char *</ret><nametext>erl_iolist_to_string(list)</nametext></name>
       <fsummary>Convert an I/O list to a <c>NULL</c>-terminated string.</fsummary>
       <type>
         <v>ETERM *list;</v>
@@ -312,7 +321,7 @@ iohead ::= Binary
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>erl_length(list)</nametext></name>
+      <name since=""><ret>int</ret><nametext>erl_length(list)</nametext></name>
       <fsummary>Determine the length of a list.</fsummary>
       <type>
         <v>ETERM *list;</v>
@@ -328,7 +337,7 @@ iohead ::= Binary
     </func>
 
     <func>
-      <name><ret>ETERM *</ret><nametext>erl_mk_atom(string)</nametext></name>
+      <name since=""><ret>ETERM *</ret><nametext>erl_mk_atom(string)</nametext></name>
       <fsummary>Create an atom.</fsummary>
       <type>
         <v>const char *string;</v>
@@ -355,7 +364,7 @@ iohead ::= Binary
     </func>
 
     <func>
-      <name><ret>ETERM *</ret><nametext>erl_mk_binary(bptr, size)</nametext></name>
+      <name since=""><ret>ETERM *</ret><nametext>erl_mk_binary(bptr, size)</nametext></name>
       <fsummary>Create a binary object.</fsummary>
       <type>
         <v>char *bptr;</v>
@@ -378,7 +387,7 @@ iohead ::= Binary
     </func>
 
     <func>
-      <name><ret>ETERM *</ret><nametext>erl_mk_empty_list()</nametext></name>
+      <name since=""><ret>ETERM *</ret><nametext>erl_mk_empty_list()</nametext></name>
       <fsummary>Create an empty Erlang list.</fsummary>
       <desc>
         <p>Creates and returns an empty Erlang list.
@@ -388,7 +397,7 @@ iohead ::= Binary
     </func>
 
     <func>
-      <name><ret>ETERM *</ret><nametext>erl_mk_estring(string, len)</nametext></name>
+      <name since=""><ret>ETERM *</ret><nametext>erl_mk_estring(string, len)</nametext></name>
       <fsummary>Create an Erlang string.</fsummary>
       <type>
         <v>char *string;</v>
@@ -408,7 +417,7 @@ iohead ::= Binary
     </func>
 
     <func>
-      <name><ret>ETERM *</ret><nametext>erl_mk_float(f)</nametext></name>
+      <name since=""><ret>ETERM *</ret><nametext>erl_mk_float(f)</nametext></name>
       <fsummary>Create an Erlang float.</fsummary>
       <type>
         <v>double f;</v>
@@ -426,7 +435,7 @@ iohead ::= Binary
     </func>
 
     <func>
-      <name><ret>ETERM *</ret><nametext>erl_mk_int(n)</nametext></name>
+      <name since=""><ret>ETERM *</ret><nametext>erl_mk_int(n)</nametext></name>
       <fsummary>Create an Erlang integer.</fsummary>
       <type>
         <v>int n;</v>
@@ -443,7 +452,7 @@ iohead ::= Binary
     </func>
 
     <func>
-      <name><ret>ETERM *</ret><nametext>erl_mk_list(array, arrsize)</nametext></name>
+      <name since=""><ret>ETERM *</ret><nametext>erl_mk_list(array, arrsize)</nametext></name>
       <fsummary>Create a list from an array.</fsummary>
       <type>
         <v>ETERM **array;</v>
@@ -465,7 +474,7 @@ iohead ::= Binary
     </func>
 
     <func>
-      <name><ret>ETERM *</ret><nametext>erl_mk_long_ref(node, n1, n2, n3, creation)</nametext></name>
+      <name since=""><ret>ETERM *</ret><nametext>erl_mk_long_ref(node, n1, n2, n3, creation)</nametext></name>
       <fsummary>Create an Erlang reference.</fsummary>
       <type>
         <v>const char *node;</v>
@@ -495,7 +504,7 @@ iohead ::= Binary
     </func>
 
     <func>
-      <name><ret>ETERM *</ret><nametext>erl_mk_pid(node, number, serial, creation)</nametext></name>
+      <name since=""><ret>ETERM *</ret><nametext>erl_mk_pid(node, number, serial, creation)</nametext></name>
       <fsummary>Create a process identifier.</fsummary>
       <type>
         <v>const char *node;</v>
@@ -525,7 +534,7 @@ iohead ::= Binary
     </func>
 
     <func>
-      <name><ret>ETERM *</ret><nametext>erl_mk_port(node, number, creation)</nametext></name>
+      <name since=""><ret>ETERM *</ret><nametext>erl_mk_port(node, number, creation)</nametext></name>
       <fsummary>Create a port identifier.</fsummary>
       <type>
         <v>const char *node;</v>
@@ -550,7 +559,7 @@ iohead ::= Binary
     </func>
 
     <func>
-      <name><ret>ETERM *</ret><nametext>erl_mk_ref(node, number, creation)</nametext></name>
+      <name since=""><ret>ETERM *</ret><nametext>erl_mk_ref(node, number, creation)</nametext></name>
       <fsummary>Create an old Erlang reference.</fsummary>
       <type>
         <v>const char *node;</v>
@@ -578,7 +587,7 @@ iohead ::= Binary
     </func>
 
     <func>
-      <name><ret>ETERM *</ret><nametext>erl_mk_string(string)</nametext></name>
+      <name since=""><ret>ETERM *</ret><nametext>erl_mk_string(string)</nametext></name>
       <fsummary>Create a string.</fsummary>
       <type>
         <v>char *string;</v>
@@ -593,7 +602,7 @@ iohead ::= Binary
     </func>
 
     <func>
-      <name><ret>ETERM *</ret><nametext>erl_mk_tuple(array, arrsize)</nametext></name>
+      <name since=""><ret>ETERM *</ret><nametext>erl_mk_tuple(array, arrsize)</nametext></name>
       <fsummary>Create an Erlang tuple from an array.</fsummary>
       <type>
         <v>ETERM **array;</v>
@@ -621,7 +630,7 @@ iohead ::= Binary
     </func>
 
     <func>
-      <name><ret>ETERM *</ret><nametext>erl_mk_uint(n)</nametext></name>
+      <name since=""><ret>ETERM *</ret><nametext>erl_mk_uint(n)</nametext></name>
       <fsummary>Create an unsigned integer.</fsummary>
       <type>
         <v>unsigned int n;</v>
@@ -638,7 +647,7 @@ iohead ::= Binary
     </func>
 
     <func>
-      <name><ret>ETERM *</ret><nametext>erl_mk_var(name)</nametext></name>
+      <name since=""><ret>ETERM *</ret><nametext>erl_mk_var(name)</nametext></name>
       <fsummary>Create an Erlang variable.</fsummary>
       <type>
         <v>char *name;</v>
@@ -653,7 +662,7 @@ iohead ::= Binary
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>erl_print_term(stream, term)</nametext></name>
+      <name since=""><ret>int</ret><nametext>erl_print_term(stream, term)</nametext></name>
       <fsummary>Print an Erlang term.</fsummary>
       <type>
         <v>FILE *stream;</v>
@@ -672,7 +681,7 @@ iohead ::= Binary
     </func>
 
     <func>
-      <name><ret>void</ret><nametext>erl_set_compat_rel(release_number)</nametext></name>
+      <name since=""><ret>void</ret><nametext>erl_set_compat_rel(release_number)</nametext></name>
       <fsummary>Set the Erl_Interface library in compatibility mode.</fsummary>
       <type>
         <v>unsigned release_number;</v>
@@ -706,7 +715,7 @@ iohead ::= Binary
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>erl_size(term)</nametext></name>
+      <name since=""><ret>int</ret><nametext>erl_size(term)</nametext></name>
       <fsummary>Return the arity of a tuple or binary.</fsummary>
       <type>
         <v>ETERM *term;</v>
@@ -723,7 +732,7 @@ iohead ::= Binary
     </func>
 
     <func>
-      <name><ret>ETERM *</ret><nametext>erl_tl(list)</nametext></name>
+      <name since=""><ret>ETERM *</ret><nametext>erl_tl(list)</nametext></name>
       <fsummary>Extract the tail from a list.</fsummary>
       <type>
         <v>ETERM *list;</v>
@@ -738,7 +747,7 @@ iohead ::= Binary
     </func>
 
     <func>
-      <name><ret>ETERM *</ret><nametext>erl_var_content(term, name)</nametext></name>
+      <name since=""><ret>ETERM *</ret><nametext>erl_var_content(term, name)</nametext></name>
       <fsummary>Extract the content of a variable.</fsummary>
       <type>
         <v>ETERM *term;</v>
diff --git a/lib/erl_interface/doc/src/erl_format.xml b/lib/erl_interface/doc/src/erl_format.xml
index 5b8b7b5e78..b5e895c720 100644
--- a/lib/erl_interface/doc/src/erl_format.xml
+++ b/lib/erl_interface/doc/src/erl_format.xml
@@ -41,7 +41,7 @@
 
   <funcs>
     <func>
-      <name><ret>ETERM *</ret><nametext>erl_format(FormatStr, ...)</nametext></name>
+      <name since=""><ret>ETERM *</ret><nametext>erl_format(FormatStr, ...)</nametext></name>
       <fsummary>Create an Erlang term.</fsummary>
       <type>
         <v>char *FormatStr;</v>
@@ -81,7 +81,7 @@ erl_format("[{name,~a},{age,~i},{data,~w}]",
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>erl_match(Pattern, Term)</nametext></name>
+      <name since=""><ret>int</ret><nametext>erl_match(Pattern, Term)</nametext></name>
       <fsummary>Perform pattern matching.</fsummary>
       <type>
         <v>ETERM *Pattern,*Term;</v>
diff --git a/lib/erl_interface/doc/src/erl_global.xml b/lib/erl_interface/doc/src/erl_global.xml
index 2fa0045adf..39085b46f0 100644
--- a/lib/erl_interface/doc/src/erl_global.xml
+++ b/lib/erl_interface/doc/src/erl_global.xml
@@ -35,6 +35,15 @@
   <lib>erl_global</lib>
   <libsummary>Access globally registered names.</libsummary>
   <description>
+    <note><p>The support for VxWorks is deprecated as of OTP 22, and
+    will be removed in OTP 23.</p></note>
+    <note><p>The old legacy <c>erl_interface</c> library (functions
+    with prefix <c>erl_</c>) is deprecated as of OTP 22, and will be
+    removed in OTP 23. This does not apply to the <c>ei</c>
+    library. Reasonably new <c>gcc</c> compilers will issue deprecation
+    warnings. In order to disable these warnings, define the macro
+    <c>EI_NO_DEPR_WARN</c>.</p></note>
+    
     <p>This module provides support for registering, looking
       up, and unregistering names in the <c>global</c> module.
       For more information, see
@@ -48,7 +57,7 @@
 
   <funcs>
     <func>
-      <name><ret>char **</ret><nametext>erl_global_names(fd,count)</nametext></name>
+      <name since=""><ret>char **</ret><nametext>erl_global_names(fd,count)</nametext></name>
       <fsummary>Obtain list of global names.</fsummary>
       <type>
         <v>int fd;</v>
@@ -79,7 +88,7 @@
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>erl_global_register(fd,name,pid)</nametext></name>
+      <name since=""><ret>int</ret><nametext>erl_global_register(fd,name,pid)</nametext></name>
       <fsummary>Register a name in global.</fsummary>
       <type>
         <v>int fd;</v>
@@ -103,7 +112,7 @@
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>erl_global_unregister(fd,name)</nametext></name>
+      <name since=""><ret>int</ret><nametext>erl_global_unregister(fd,name)</nametext></name>
       <fsummary>Unregister a name from global.</fsummary>
       <type>
         <v>int fd;</v>
@@ -122,7 +131,7 @@
     </func>
 
     <func>
-      <name><ret>ETERM *</ret><nametext>erl_global_whereis(fd,name,node)</nametext></name>
+      <name since=""><ret>ETERM *</ret><nametext>erl_global_whereis(fd,name,node)</nametext></name>
       <fsummary>Look up a name in global.</fsummary>
       <type>
         <v>int fd;</v>
diff --git a/lib/erl_interface/doc/src/erl_interface.xml b/lib/erl_interface/doc/src/erl_interface.xml
index 4e66655b39..decd66046a 100644
--- a/lib/erl_interface/doc/src/erl_interface.xml
+++ b/lib/erl_interface/doc/src/erl_interface.xml
@@ -58,6 +58,18 @@
   </list>
 
   <section>
+    <title>Deprecation and Removal</title>
+    <note><p>The support for VxWorks is deprecated as of OTP 22, and
+    will be removed in OTP 23.</p></note>
+    <note><p>The old legacy <c>erl_interface</c> library (functions
+    with prefix <c>erl_</c>) is deprecated as of OTP 22, and will be
+    removed in OTP 23. This does not apply to the <c>ei</c>
+    library. Reasonably new <c>gcc</c> compilers will issue deprecation
+    warnings. In order to disable these warnings, define the macro
+    <c>EI_NO_DEPR_WARN</c>.</p></note>
+  </section>
+
+  <section>
     <title>Compiling and Linking Your Code</title>
     <p>In order to use any of the Erl_Interface functions, include the
       following lines in your code:</p>
diff --git a/lib/erl_interface/doc/src/erl_malloc.xml b/lib/erl_interface/doc/src/erl_malloc.xml
index c0eebc29e9..6650620064 100644
--- a/lib/erl_interface/doc/src/erl_malloc.xml
+++ b/lib/erl_interface/doc/src/erl_malloc.xml
@@ -35,13 +35,21 @@
   <lib>erl_malloc</lib>
   <libsummary>Memory allocation functions.</libsummary>
   <description>
+    <note><p>The support for VxWorks is deprecated as of OTP 22, and
+    will be removed in OTP 23.</p></note>
+    <note><p>The old legacy <c>erl_interface</c> library (functions
+    with prefix <c>erl_</c>) is deprecated as of OTP 22, and will be
+    removed in OTP 23. This does not apply to the <c>ei</c>
+    library. Reasonably new <c>gcc</c> compilers will issue deprecation
+    warnings. In order to disable these warnings, define the macro
+    <c>EI_NO_DEPR_WARN</c>.</p></note>
     <p>This module provides functions for allocating and deallocating
       memory.</p>
   </description>
 
   <funcs>
     <func>
-      <name><ret>ETERM *</ret><nametext>erl_alloc_eterm(etype)</nametext></name>
+      <name since=""><ret>ETERM *</ret><nametext>erl_alloc_eterm(etype)</nametext></name>
       <fsummary>Allocate an ETERM structure.</fsummary>
       <type>
         <v>unsigned char etype;</v>
@@ -89,7 +97,7 @@
     </func>
 
     <func>
-      <name><ret>void</ret><nametext>erl_eterm_release(void)</nametext></name>
+      <name since=""><ret>void</ret><nametext>erl_eterm_release(void)</nametext></name>
       <fsummary>Clear the ETERM freelist.</fsummary>
       <desc>
         <p>Clears the freelist, where blocks are placed when they are
@@ -99,7 +107,7 @@
     </func>
 
     <func>
-      <name><ret>void</ret><nametext>erl_eterm_statistics(allocated, freed)</nametext></name>
+      <name since=""><ret>void</ret><nametext>erl_eterm_statistics(allocated, freed)</nametext></name>
       <fsummary>Report term allocation statistics.</fsummary>
       <type>
         <v>long *allocated;</v>
@@ -127,7 +135,7 @@
     </func>
 
     <func>
-      <name><ret>void</ret><nametext>erl_free(ptr)</nametext></name>
+      <name since=""><ret>void</ret><nametext>erl_free(ptr)</nametext></name>
       <fsummary>Free some memory.</fsummary>
       <type>
         <v>void *ptr;</v>
@@ -139,7 +147,7 @@
     </func>
 
     <func>
-      <name><ret>void</ret><nametext>erl_free_array(array, size)</nametext></name>
+      <name since=""><ret>void</ret><nametext>erl_free_array(array, size)</nametext></name>
       <fsummary>Free an array of ETERM structures.</fsummary>
       <type>
         <v>ETERM **array;</v>
@@ -156,7 +164,7 @@
     </func>
 
     <func>
-      <name><ret>void</ret><nametext>erl_free_compound(t)</nametext></name>
+      <name since=""><ret>void</ret><nametext>erl_free_compound(t)</nametext></name>
       <fsummary>Free an array of ETERM structures.</fsummary>
       <type>
         <v>ETERM *t;</v>
@@ -179,7 +187,7 @@
     </func>
 
     <func>
-      <name><ret>void</ret><nametext>erl_free_term(t)</nametext></name>
+      <name since=""><ret>void</ret><nametext>erl_free_term(t)</nametext></name>
       <fsummary>Free an ETERM structure.</fsummary>
       <type>
         <v>ETERM *t;</v>
@@ -190,7 +198,7 @@
     </func>
 
     <func>
-      <name><ret>void</ret><nametext>erl_malloc(size)</nametext></name>
+      <name since=""><ret>void</ret><nametext>erl_malloc(size)</nametext></name>
       <fsummary>Allocate some memory.</fsummary>
       <type>
         <v>long size;</v>
diff --git a/lib/erl_interface/doc/src/erl_marshal.xml b/lib/erl_interface/doc/src/erl_marshal.xml
index 2ad658f78b..33d359d871 100644
--- a/lib/erl_interface/doc/src/erl_marshal.xml
+++ b/lib/erl_interface/doc/src/erl_marshal.xml
@@ -35,6 +35,14 @@
   <lib>erl_marshal</lib>
   <libsummary>Encoding and decoding of Erlang terms.</libsummary>
   <description>
+    <note><p>The support for VxWorks is deprecated as of OTP 22, and
+    will be removed in OTP 23.</p></note>
+    <note><p>The old legacy <c>erl_interface</c> library (functions
+    with prefix <c>erl_</c>) is deprecated as of OTP 22, and will be
+    removed in OTP 23. This does not apply to the <c>ei</c>
+    library. Reasonably new <c>gcc</c> compilers will issue deprecation
+    warnings. In order to disable these warnings, define the macro
+    <c>EI_NO_DEPR_WARN</c>.</p></note>
     <p>This module contains functions for encoding Erlang terms into
       a sequence of bytes, and for decoding Erlang terms from a
       sequence of bytes.</p>
@@ -42,7 +50,7 @@
 
   <funcs>
     <func>
-      <name><ret>int</ret><nametext>erl_compare_ext(bufp1, bufp2)</nametext></name>
+      <name since=""><ret>int</ret><nametext>erl_compare_ext(bufp1, bufp2)</nametext></name>
       <fsummary>Compare encoded byte sequences.</fsummary>
       <type>
         <v>unsigned char *bufp1,*bufp2;</v>
@@ -62,8 +70,8 @@
     </func>
 
     <func>
-      <name><ret>ETERM *</ret><nametext>erl_decode(bufp)</nametext></name>
-      <name><ret>ETERM *</ret><nametext>erl_decode_buf(bufpp)</nametext></name>
+      <name since=""><ret>ETERM *</ret><nametext>erl_decode(bufp)</nametext></name>
+      <name since=""><ret>ETERM *</ret><nametext>erl_decode_buf(bufpp)</nametext></name>
       <fsummary>Convert a term from Erlang external format.</fsummary>
       <type>
         <v>unsigned char *bufp;</v>
@@ -102,8 +110,8 @@
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>erl_encode(term, bufp)</nametext></name>
-      <name><ret>int</ret><nametext>erl_encode_buf(term, bufpp)</nametext></name>
+      <name since=""><ret>int</ret><nametext>erl_encode(term, bufp)</nametext></name>
+      <name since=""><ret>int</ret><nametext>erl_encode_buf(term, bufpp)</nametext></name>
       <fsummary>Convert a term into Erlang external format.</fsummary>
       <type>
         <v>ETERM *term;</v>
@@ -179,7 +187,7 @@
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>erl_ext_size(bufp)</nametext></name>
+      <name since=""><ret>int</ret><nametext>erl_ext_size(bufp)</nametext></name>
       <fsummary>Count elements in encoded term.</fsummary>
       <type>
         <v>unsigned char *bufp;</v>
@@ -190,7 +198,7 @@
     </func>
 
     <func>
-      <name><ret>unsigned char</ret><nametext>erl_ext_type(bufp)</nametext></name>
+      <name since=""><ret>unsigned char</ret><nametext>erl_ext_type(bufp)</nametext></name>
       <fsummary>Determine type of an encoded byte sequence.</fsummary>
       <type>
         <v>unsigned char *bufp;</v>
@@ -228,7 +236,7 @@
     </func>
 
     <func>
-      <name><ret>unsigned char *</ret><nametext>erl_peek_ext(bufp, pos)</nametext></name>
+      <name since=""><ret>unsigned char *</ret><nametext>erl_peek_ext(bufp, pos)</nametext></name>
       <fsummary>Step over encoded term.</fsummary>
       <type>
         <v>unsigned char *bufp;</v>
@@ -252,7 +260,7 @@
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>erl_term_len(t)</nametext></name>
+      <name since=""><ret>int</ret><nametext>erl_term_len(t)</nametext></name>
       <fsummary>Determine encoded size of term.</fsummary>
       <type>
         <v>ETERM *t;</v>
diff --git a/lib/erl_interface/doc/src/notes.xml b/lib/erl_interface/doc/src/notes.xml
index 07ddd82718..32d28b853b 100644
--- a/lib/erl_interface/doc/src/notes.xml
+++ b/lib/erl_interface/doc/src/notes.xml
@@ -31,6 +31,43 @@
   </header>
   <p>This document describes the changes made to the Erl_interface application.</p>
 
+<section><title>Erl_Interface 3.11.1</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Fixed two bugs in the <c>erl_call</c> program. A missing
+	    initialization (introduced in <c>erl_interface-3.11</c>)
+	    which either caused a crash or failure to connect to or
+	    start a node, and an incorrectly calculated timeout which
+	    could cause failure to start an erlang node. These bugs
+	    only caused failures on some platforms.</p>
+          <p>
+	    Own Id: OTP-15676 Aux Id: OTP-15442, ERL-881 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>Erl_Interface 3.11</title>
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+          <p>
+	    Support for plugin of a <seealso
+	    marker="ei_connect#ussi">user supplied socket
+	    implementation</seealso> has been added.</p>
+          <p>
+	    Own Id: OTP-15442 Aux Id: ERIERL-258 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Erl_Interface 3.10.4</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
diff --git a/lib/erl_interface/doc/src/ref_man.xml b/lib/erl_interface/doc/src/ref_man.xml
index 1e20637cb7..a4f947c79f 100644
--- a/lib/erl_interface/doc/src/ref_man.xml
+++ b/lib/erl_interface/doc/src/ref_man.xml
@@ -29,6 +29,14 @@
     <file>ref_man.xml</file>
   </header>
   <description>
+    <note><p>The support for VxWorks is deprecated as of OTP 22, and
+    will be removed in OTP 23.</p></note>
+    <note><p>The old legacy <c>erl_interface</c> library (functions
+    with prefix <c>erl_</c>) is deprecated as of OTP 22, and will be
+    removed in OTP 23. This does not apply to the <c>ei</c>
+    library. Reasonably new <c>gcc</c> compilers will issue deprecation
+    warnings. In order to disable these warnings, define the macro
+    <c>EI_NO_DEPR_WARN</c>.</p></note>
   </description>
   <xi:include href="ei.xml"/>
   <xi:include href="ei_connect.xml"/>
diff --git a/lib/erl_interface/doc/src/ref_man_ei.xml b/lib/erl_interface/doc/src/ref_man_ei.xml
index 92ff9ed328..d8d1deaea1 100644
--- a/lib/erl_interface/doc/src/ref_man_ei.xml
+++ b/lib/erl_interface/doc/src/ref_man_ei.xml
@@ -30,8 +30,14 @@
     <file>ref_man_ei.xml</file>
   </header>
   <description>
-    <p>The <c>ei</c> library is a <c>C</c> interface library for
-      communication with <c>Erlang</c>.</p>
+    <note><p>The support for VxWorks is deprecated as of OTP 22, and
+    will be removed in OTP 23.</p></note>
+    <note><p>The old legacy <c>erl_interface</c> library (functions
+    with prefix <c>erl_</c>) is deprecated as of OTP 22, and will be
+    removed in OTP 23. This does not apply to the <c>ei</c>
+    library. Reasonably new <c>gcc</c> compilers will issue deprecation
+    warnings. In order to disable these warnings, define the macro
+    <c>EI_NO_DEPR_WARN</c>.</p></note>
     <note>
       <p>By default, the <c>ei</c> library is only guaranteed
         to be compatible with other Erlang/OTP components from the same
diff --git a/lib/erl_interface/doc/src/ref_man_erl_interface.xml b/lib/erl_interface/doc/src/ref_man_erl_interface.xml
index 4b1d0e9981..2b69d0fa74 100644
--- a/lib/erl_interface/doc/src/ref_man_erl_interface.xml
+++ b/lib/erl_interface/doc/src/ref_man_erl_interface.xml
@@ -30,6 +30,14 @@
     <file>ref_man_erl_interface.xml</file>
   </header>
   <description>
+    <note><p>The support for VxWorks is deprecated as of OTP 22, and
+    will be removed in OTP 23.</p></note>
+    <note><p>The old legacy <c>erl_interface</c> library (functions
+    with prefix <c>erl_</c>) is deprecated as of OTP 22, and will be
+    removed in OTP 23. This does not apply to the <c>ei</c>
+    library. Reasonably new <c>gcc</c> compilers will issue deprecation
+    warnings. In order to disable these warnings, define the macro
+    <c>EI_NO_DEPR_WARN</c>.</p></note>    
     <p>The <c>erl_interface</c> library is a <c>C</c> interface library
       for communication with <c>Erlang</c>.</p>
     <note>
diff --git a/lib/erl_interface/doc/src/registry.xml b/lib/erl_interface/doc/src/registry.xml
index 6d70fb3475..1c90c5c9dd 100644
--- a/lib/erl_interface/doc/src/registry.xml
+++ b/lib/erl_interface/doc/src/registry.xml
@@ -44,7 +44,7 @@
 
   <funcs>
     <func>
-      <name><ret>int</ret><nametext>ei_reg_close(reg)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_reg_close(reg)</nametext></name>
       <fsummary>Close a registry.</fsummary>
       <type>
         <v>ei_reg *reg;</v>
@@ -59,7 +59,7 @@
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_reg_delete(reg,key)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_reg_delete(reg,key)</nametext></name>
       <fsummary>Delete an object from the registry.</fsummary>
       <type>
         <v>ei_reg *reg;</v>
@@ -85,7 +85,7 @@
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_reg_dump(fd,reg,mntab,flags)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_reg_dump(fd,reg,mntab,flags)</nametext></name>
       <fsummary>Back up a registry to Mnesia.</fsummary>
       <type>
         <v>int fd;</v>
@@ -125,7 +125,7 @@
     </func>
 
     <func>
-      <name><ret>double</ret><nametext>ei_reg_getfval(reg,key)</nametext></name>
+      <name since=""><ret>double</ret><nametext>ei_reg_getfval(reg,key)</nametext></name>
       <fsummary>Get a floating point object.</fsummary>
       <type>
         <v>ei_reg *reg;</v>
@@ -151,7 +151,7 @@
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_reg_getival(reg,key)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_reg_getival(reg,key)</nametext></name>
       <fsummary>Get an integer object.</fsummary>
       <type>
         <v>ei_reg *reg;</v>
@@ -177,7 +177,7 @@
     </func>
 
     <func>
-      <name><ret>const void *</ret><nametext>ei_reg_getpval(reg,key,size)</nametext></name>
+      <name since=""><ret>const void *</ret><nametext>ei_reg_getpval(reg,key,size)</nametext></name>
       <fsummary>Get a binary object.</fsummary>
       <type>
         <v>ei_reg *reg;</v>
@@ -207,7 +207,7 @@
     </func>
 
     <func>
-      <name><ret>const char *</ret><nametext>ei_reg_getsval(reg,key)</nametext></name>
+      <name since=""><ret>const char *</ret><nametext>ei_reg_getsval(reg,key)</nametext></name>
       <fsummary>Get a string object.</fsummary>
       <type>
         <v>ei_reg *reg;</v>
@@ -232,7 +232,7 @@
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_reg_getval(reg,key,flags,v,...)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_reg_getval(reg,key,flags,v,...)</nametext></name>
       <fsummary>Get any object.</fsummary>
       <type>
         <v>ei_reg *reg;</v>
@@ -278,7 +278,7 @@
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_reg_markdirty(reg,key)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_reg_markdirty(reg,key)</nametext></name>
       <fsummary>Mark an object as dirty.</fsummary>
       <type>
         <v>ei_reg *reg;</v>
@@ -305,7 +305,7 @@
     </func>
 
     <func>
-      <name><ret>ei_reg *</ret><nametext>ei_reg_open(size)</nametext></name>
+      <name since=""><ret>ei_reg *</ret><nametext>ei_reg_open(size)</nametext></name>
       <fsummary>Create and open a registry.</fsummary>
       <type>
         <v>int size;</v>
@@ -326,7 +326,7 @@
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_reg_purge(reg)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_reg_purge(reg)</nametext></name>
       <fsummary>Remove deleted objects.</fsummary>
       <type>
         <v>ei_reg *reg;</v>
@@ -346,7 +346,7 @@
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_reg_resize(reg,newsize)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_reg_resize(reg,newsize)</nametext></name>
       <fsummary>Resize a registry.</fsummary>
       <type>
         <v>ei_reg *reg;</v>
@@ -363,7 +363,7 @@
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_reg_restore(fd,reg,mntab)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_reg_restore(fd,reg,mntab)</nametext></name>
       <fsummary>Restore a registry from Mnesia.</fsummary>
       <type>
         <v>int fd;</v>
@@ -399,7 +399,7 @@
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_reg_setfval(reg,key,f)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_reg_setfval(reg,key,f)</nametext></name>
       <fsummary>Assign a floating point object.</fsummary>
       <type>
         <v>ei_reg *reg;</v>
@@ -424,7 +424,7 @@
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_reg_setival(reg,key,i)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_reg_setival(reg,key,i)</nametext></name>
       <fsummary>Assign an integer object.</fsummary>
       <type>
         <v>ei_reg *reg;</v>
@@ -448,7 +448,7 @@
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_reg_setpval(reg,key,p,size)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_reg_setpval(reg,key,p,size)</nametext></name>
       <fsummary>Assign a binary object.</fsummary>
       <type>
         <v>ei_reg *reg;</v>
@@ -479,7 +479,7 @@
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_reg_setsval(reg,key,s)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_reg_setsval(reg,key,s)</nametext></name>
       <fsummary>Assign a string object.</fsummary>
       <type>
         <v>ei_reg *reg;</v>
@@ -507,7 +507,7 @@
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_reg_setval(reg,key,flags,v,...)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_reg_setval(reg,key,flags,v,...)</nametext></name>
       <fsummary>Assign a value to any object type.</fsummary>
       <type>
         <v>ei_reg *reg;</v>
@@ -552,7 +552,7 @@
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_reg_stat(reg,key,obuf)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_reg_stat(reg,key,obuf)</nametext></name>
       <fsummary>Get object information.</fsummary>
       <type>
         <v>ei_reg *reg;</v>
@@ -590,7 +590,7 @@ struct ei_reg_stat {
     </func>
 
     <func>
-      <name><ret>int</ret><nametext>ei_reg_tabstat(reg,obuf)</nametext></name>
+      <name since=""><ret>int</ret><nametext>ei_reg_tabstat(reg,obuf)</nametext></name>
       <fsummary>Get registry information.</fsummary>
       <type>
         <v>ei_reg *reg;</v>
diff --git a/lib/erl_interface/include/ei.h b/lib/erl_interface/include/ei.h
index 948f89be85..aa2a49098f 100644
--- a/lib/erl_interface/include/ei.h
+++ b/lib/erl_interface/include/ei.h
@@ -35,6 +35,9 @@
 #include <winsock2.h>
 #include <windows.h>
 #include <winbase.h>
+typedef LONG_PTR ssize_t; /* Sigh... */
+#else
+#include <sys/types.h>          /* ssize_t */
 #endif
 
 #include <stdio.h>		/* Need type FILE */
@@ -44,6 +47,25 @@
 # include <netdb.h>
 #endif
 
+#ifdef __has_attribute
+#if __has_attribute(deprecated)
+#define EI_HAVE_DEPRECATED_ATTR__ 1
+#else
+#undef EI_HAVE_DEPRECATED_ATTR__
+#endif
+#endif
+
+#ifdef EI_NO_DEPR_WARN
+#undef EI_HAVE_DEPRECATED_ATTR__
+#endif
+
+#ifdef EI_HAVE_DEPRECATED_ATTR__
+#define EI_DEPRECATED_ATTR_NAME deprecated
+#define EI_DEPRECATED_ATTR __attribute__((EI_DEPRECATED_ATTR_NAME))
+#else
+#define EI_DEPRECATED_ATTR_NAME
+#define EI_DEPRECATED_ATTR
+#endif
 
 /* -------------------------------------------------------------------- */
 /*                      Defines part of API                             */
@@ -286,6 +308,31 @@ typedef struct {
   char nodename[MAXNODELEN+1];
 } ErlConnect;
 
+#define EI_SCLBK_INF_TMO (~((unsigned) 0))
+
+#define EI_SCLBK_FLG_FULL_IMPL (1 << 0)
+
+typedef struct {
+    int flags;
+
+    int (*socket)(void **ctx, void *setup_ctx);
+    int	(*close)(void *ctx);
+    int (*listen)(void *ctx, void *addr, int *len, int backlog);
+    int (*accept)(void **ctx, void *addr, int *len, unsigned tmo);
+    int (*connect)(void *ctx, void *addr, int len, unsigned tmo);
+    int (*writev)(void *ctx, const void *iov, int iovcnt, ssize_t *len, unsigned tmo);
+    int (*write)(void *ctx, const char *buf, ssize_t *len, unsigned tmo);
+    int (*read)(void *ctx, char *buf, ssize_t *len, unsigned tmo);
+
+    int (*handshake_packet_header_size)(void *ctx, int *sz);
+    int (*connect_handshake_complete)(void *ctx);
+    int (*accept_handshake_complete)(void *ctx);
+    int (*get_fd)(void *ctx, int *fd);
+
+    /* end of version 1 */
+    
+} ei_socket_callbacks;
+
 typedef struct ei_cnode_s {
     char thishostname[EI_MAXHOSTNAMELEN+1];
     char thisnodename[MAXNODELEN+1];
@@ -295,6 +342,8 @@ typedef struct ei_cnode_s {
     char ei_connect_cookie[EI_MAX_COOKIE_SIZE+1];
     short creation;
     erlang_pid self;
+    ei_socket_callbacks *cbs;
+    void *setup_context;
 } ei_cnode;
 
 typedef struct in_addr *Erl_IpAddr; 
@@ -308,7 +357,6 @@ typedef struct ei_x_buff_TAG {
     int index;
 } ei_x_buff;
 
-
 /* -------------------------------------------------------------------- */
 /*    Function definitions (listed in same order as documentation)      */
 /* -------------------------------------------------------------------- */
@@ -322,6 +370,16 @@ int ei_connect_xinit (ei_cnode* ec, const char *thishostname,
 		      Erl_IpAddr thisipaddr, const char *cookie,
 		      const short creation);
 
+int ei_connect_init_ussi(ei_cnode* ec, const char* this_node_name,
+                         const char *cookie, short creation,
+                         ei_socket_callbacks *cbs, int cbs_sz,
+                         void *setup_context);
+int ei_connect_xinit_ussi(ei_cnode* ec, const char *thishostname,
+                          const char *thisalivename, const char *thisnodename,
+                          Erl_IpAddr thisipaddr, const char *cookie,
+                          const short creation, ei_socket_callbacks *cbs,
+                          int cbs_sz, void *setup_context);
+
 int ei_connect(ei_cnode* ec, char *nodename);
 int ei_connect_tmo(ei_cnode* ec, char *nodename, unsigned ms);
 int ei_xconnect(ei_cnode* ec, Erl_IpAddr adr, char *alivename);
@@ -348,11 +406,15 @@ int ei_rpc_from(ei_cnode* ec, int fd, int timeout, erlang_msg* msg,
 
 int ei_publish(ei_cnode* ec, int port);
 int ei_publish_tmo(ei_cnode* ec, int port, unsigned ms);
+int ei_listen(ei_cnode *ec, int *port, int backlog);
+int ei_xlisten(ei_cnode *ec, Erl_IpAddr adr, int *port, int backlog);    
 int ei_accept(ei_cnode* ec, int lfd, ErlConnect *conp);
 int ei_accept_tmo(ei_cnode* ec, int lfd, ErlConnect *conp, unsigned ms);
 int ei_unpublish(ei_cnode* ec);
 int ei_unpublish_tmo(const char *alive, unsigned ms);
 
+int ei_close_connection(int fd);
+
 const char *ei_thisnodename(const ei_cnode* ec);
 const char *ei_thishostname(const ei_cnode* ec);
 const char *ei_thisalivename(const ei_cnode* ec);
@@ -626,6 +688,8 @@ struct ei_reg_tabstat {
 };
 
 
+int ei_init(void);
+
 /* -------------------------------------------------------------------- */
 /*                               XXXXXXXXXXX                            */
 /* -------------------------------------------------------------------- */
diff --git a/lib/erl_interface/include/erl_interface.h b/lib/erl_interface/include/erl_interface.h
index c22f21af2b..7c87223a38 100644
--- a/lib/erl_interface/include/erl_interface.h
+++ b/lib/erl_interface/include/erl_interface.h
@@ -25,8 +25,6 @@
 /*      Note: the 'ei' interface is the prefered C API.                 */
 /************************************************************************/
 
-/* FIXME only include if needed? */
- 
 #include "ei.h"			/* ei is the base */
 
 /* -------------------------------------------------------------------- */
@@ -195,11 +193,11 @@ typedef struct {
   int lenL;
 } Erl_Atom_data;
 
-char* erl_atom_ptr_latin1(Erl_Atom_data*);
-char* erl_atom_ptr_utf8(Erl_Atom_data*);
-int erl_atom_size_latin1(Erl_Atom_data*);
-int erl_atom_size_utf8(Erl_Atom_data*);
-char* erl_atom_init_latin1(Erl_Atom_data*, const char*);
+char* erl_atom_ptr_latin1(Erl_Atom_data*) EI_DEPRECATED_ATTR;
+char* erl_atom_ptr_utf8(Erl_Atom_data*) EI_DEPRECATED_ATTR;
+int erl_atom_size_latin1(Erl_Atom_data*) EI_DEPRECATED_ATTR;
+int erl_atom_size_utf8(Erl_Atom_data*) EI_DEPRECATED_ATTR;
+char* erl_atom_init_latin1(Erl_Atom_data*, const char*) EI_DEPRECATED_ATTR;
 
 typedef struct {
   Erl_Header h;
@@ -324,110 +322,117 @@ typedef unsigned char Erl_Heap;
 /*                          The functions                               */
 /* -------------------------------------------------------------------- */
 
-void   erl_init(void *x, long y);
-void   erl_set_compat_rel(unsigned);
-int    erl_connect_init(int, char*,short);
-int    erl_connect_xinit(char*,char*,char*,struct in_addr*,char*,short);
-int    erl_connect(char*); 
-int    erl_xconnect(struct in_addr*,char *);
-int    erl_close_connection(int);
-int    erl_receive(int, unsigned char*, int);
-int    erl_receive_msg(int, unsigned char*, int, ErlMessage*);
-int    erl_xreceive_msg(int, unsigned char**, int*, ErlMessage*);
-int    erl_send(int, ETERM*, ETERM*);
-int    erl_reg_send(int, char*, ETERM*);
-ETERM *erl_rpc(int,char*,char*,ETERM*);
-int    erl_rpc_to(int,char*,char*,ETERM*);
-int    erl_rpc_from(int,int,ErlMessage*);
+void   erl_init(void *x, long y) EI_DEPRECATED_ATTR;
+void   erl_set_compat_rel(unsigned) EI_DEPRECATED_ATTR;
+int    erl_connect_init(int, char*,short) EI_DEPRECATED_ATTR;
+int    erl_connect_xinit(char*,char*,char*,struct in_addr*,char*,short) EI_DEPRECATED_ATTR;
+int    erl_connect(char*) EI_DEPRECATED_ATTR; 
+int    erl_xconnect(struct in_addr*,char *) EI_DEPRECATED_ATTR;
+int    erl_close_connection(int) EI_DEPRECATED_ATTR;
+int    erl_receive(int, unsigned char*, int) EI_DEPRECATED_ATTR;
+int    erl_receive_msg(int, unsigned char*, int, ErlMessage*) EI_DEPRECATED_ATTR;
+int    erl_xreceive_msg(int, unsigned char**, int*, ErlMessage*) EI_DEPRECATED_ATTR;
+int    erl_send(int, ETERM*, ETERM*) EI_DEPRECATED_ATTR;
+int    erl_reg_send(int, char*, ETERM*) EI_DEPRECATED_ATTR;
+ETERM *erl_rpc(int,char*,char*,ETERM*) EI_DEPRECATED_ATTR;
+int    erl_rpc_to(int,char*,char*,ETERM*) EI_DEPRECATED_ATTR;
+int    erl_rpc_from(int,int,ErlMessage*) EI_DEPRECATED_ATTR;
 
 /* erl_publish returns open descriptor on success, or -1 */
-int    erl_publish(int port);
-int    erl_accept(int,ErlConnect*);
+int    erl_publish(int port) EI_DEPRECATED_ATTR;
+int    erl_accept(int,ErlConnect*) EI_DEPRECATED_ATTR;
 
-const char *erl_thiscookie(void);
-const char *erl_thisnodename(void);
-const char *erl_thishostname(void);
-const char *erl_thisalivename(void);
-short       erl_thiscreation(void);
+const char *erl_thiscookie(void) EI_DEPRECATED_ATTR;
+const char *erl_thisnodename(void) EI_DEPRECATED_ATTR;
+const char *erl_thishostname(void) EI_DEPRECATED_ATTR;
+const char *erl_thisalivename(void) EI_DEPRECATED_ATTR;
+short       erl_thiscreation(void) EI_DEPRECATED_ATTR;
 
 /* returns 0 on success, -1 if node not known to epmd or epmd not reached */
-int    erl_unpublish(const char *alive);
+int    erl_unpublish(const char *alive) EI_DEPRECATED_ATTR;
+
+#ifdef EI_HAVE_DEPRECATED_ATTR__
+#define EI_DEPR_ATTR_EXTRA , EI_DEPRECATED_ATTR_NAME
+#else
+#define EI_DEPR_ATTR_EXTRA
+#endif
+
 
 /* Report generic error to stderr. */
 void   erl_err_msg(const char * __template, ...)
-       __attribute__ ((__format__ (printf, 1, 2)));
+       __attribute__ ((__format__ (printf, 1, 2) EI_DEPR_ATTR_EXTRA)) ;
 /* Report generic error to stderr and die. */
 void   erl_err_quit(const char * __template, ...)
-       __attribute__ ((__format__ (printf, 1, 2), __noreturn__));
+       __attribute__ ((__format__ (printf, 1, 2), __noreturn__ EI_DEPR_ATTR_EXTRA));
 /* Report system/libc error to stderr. */
 void   erl_err_ret(const char * __template, ...)
-       __attribute__ ((__format__ (printf, 1, 2)));
+       __attribute__ ((__format__ (printf, 1, 2) EI_DEPR_ATTR_EXTRA));
 /* Report system/libc error to stderr and die. */
 void   erl_err_sys(const char * __template, ...)
-       __attribute__ ((__format__ (printf, 1, 2), __noreturn__));
-
-ETERM *erl_cons(ETERM*,ETERM*);
-ETERM *erl_copy_term(const ETERM*);
-ETERM *erl_element(int,const ETERM*);
-
-ETERM *erl_hd(const ETERM*);
-ETERM* erl_iolist_to_binary(const ETERM* term);
-char*  erl_iolist_to_string(const ETERM* term);
-int    erl_iolist_length(const ETERM*);
-int    erl_length(const ETERM*);
-ETERM *erl_mk_atom(const char*);
-ETERM *erl_mk_binary(const char*,int);
-ETERM *erl_mk_empty_list(void);
-ETERM *erl_mk_estring(const char*, int);
-ETERM *erl_mk_float(double);
-ETERM *erl_mk_int(int);
-ETERM *erl_mk_longlong(long long);
-ETERM *erl_mk_list(ETERM**,int);
-ETERM *erl_mk_pid(const char*,unsigned int,unsigned int,unsigned char);
-ETERM *erl_mk_port(const char*,unsigned int,unsigned char);
-ETERM *erl_mk_ref(const char*,unsigned int,unsigned char);
+       __attribute__ ((__format__ (printf, 1, 2), __noreturn__ EI_DEPR_ATTR_EXTRA));
+
+ETERM *erl_cons(ETERM*,ETERM*) EI_DEPRECATED_ATTR;
+ETERM *erl_copy_term(const ETERM*) EI_DEPRECATED_ATTR;
+ETERM *erl_element(int,const ETERM*) EI_DEPRECATED_ATTR;
+
+ETERM *erl_hd(const ETERM*) EI_DEPRECATED_ATTR;
+ETERM* erl_iolist_to_binary(const ETERM* term) EI_DEPRECATED_ATTR;
+char*  erl_iolist_to_string(const ETERM* term) EI_DEPRECATED_ATTR;
+int    erl_iolist_length(const ETERM*) EI_DEPRECATED_ATTR;
+int    erl_length(const ETERM*) EI_DEPRECATED_ATTR;
+ETERM *erl_mk_atom(const char*) EI_DEPRECATED_ATTR;
+ETERM *erl_mk_binary(const char*,int) EI_DEPRECATED_ATTR;
+ETERM *erl_mk_empty_list(void) EI_DEPRECATED_ATTR;
+ETERM *erl_mk_estring(const char*, int) EI_DEPRECATED_ATTR;
+ETERM *erl_mk_float(double) EI_DEPRECATED_ATTR;
+ETERM *erl_mk_int(int) EI_DEPRECATED_ATTR;
+ETERM *erl_mk_longlong(long long) EI_DEPRECATED_ATTR;
+ETERM *erl_mk_list(ETERM**,int) EI_DEPRECATED_ATTR;
+ETERM *erl_mk_pid(const char*,unsigned int,unsigned int,unsigned char) EI_DEPRECATED_ATTR;
+ETERM *erl_mk_port(const char*,unsigned int,unsigned char) EI_DEPRECATED_ATTR;
+ETERM *erl_mk_ref(const char*,unsigned int,unsigned char) EI_DEPRECATED_ATTR;
 ETERM *erl_mk_long_ref(const char*,unsigned int,unsigned int,
-		       unsigned int,unsigned char);
-ETERM *erl_mk_string(const char*);
-ETERM *erl_mk_tuple(ETERM**,int);
-ETERM *erl_mk_uint(unsigned int);
-ETERM *erl_mk_ulonglong(unsigned long long);
-ETERM *erl_mk_var(const char*);
-int    erl_print_term(FILE*,const ETERM*);
-/* int    erl_sprint_term(char*,const ETERM*); */
-int    erl_size(const ETERM*);
-ETERM *erl_tl(const ETERM*);
-ETERM *erl_var_content(const ETERM*, const char*);
-
-ETERM *erl_format(char*, ... );
-int    erl_match(ETERM*, ETERM*);
-
-char **erl_global_names(int fd, int *count);
-int    erl_global_register(int fd, const char *name, ETERM *pid);
-int    erl_global_unregister(int fd, const char *name);
-ETERM *erl_global_whereis(int fd, const char *name, char *node);
-
-void   erl_init_malloc(Erl_Heap*,long);
-ETERM *erl_alloc_eterm(unsigned char);
-void   erl_eterm_release(void);
-void   erl_eterm_statistics(unsigned long*,unsigned long*);
-void   erl_free_array(ETERM**,int);
-void   erl_free_term(ETERM*);
-void   erl_free_compound(ETERM*);
-void  *erl_malloc(long);
-void   erl_free(void*);
-
-int    erl_compare_ext(unsigned char*, unsigned char*);
-ETERM *erl_decode(unsigned char*);
-ETERM *erl_decode_buf(unsigned char**);
-int    erl_encode(ETERM*,unsigned char*t);
-int    erl_encode_buf(ETERM*,unsigned char**);
-int    erl_ext_size(unsigned char*);
-unsigned char erl_ext_type(unsigned char*); /* Note: returned 'char' before R9C */
-unsigned char *erl_peek_ext(unsigned char*,int);
-int    erl_term_len(ETERM*);
-
-int cmp_latin1_vs_utf8(const char* sL, int lenL, const char* sU, int lenU);
+		       unsigned int,unsigned char) EI_DEPRECATED_ATTR;
+ETERM *erl_mk_string(const char*) EI_DEPRECATED_ATTR;
+ETERM *erl_mk_tuple(ETERM**,int) EI_DEPRECATED_ATTR;
+ETERM *erl_mk_uint(unsigned int) EI_DEPRECATED_ATTR;
+ETERM *erl_mk_ulonglong(unsigned long long) EI_DEPRECATED_ATTR;
+ETERM *erl_mk_var(const char*) EI_DEPRECATED_ATTR;
+int    erl_print_term(FILE*,const ETERM*) EI_DEPRECATED_ATTR;
+/* int    erl_sprint_term(char*,const ETERM*) EI_DEPRECATED_ATTR; */
+int    erl_size(const ETERM*) EI_DEPRECATED_ATTR;
+ETERM *erl_tl(const ETERM*) EI_DEPRECATED_ATTR;
+ETERM *erl_var_content(const ETERM*, const char*) EI_DEPRECATED_ATTR;
+
+ETERM *erl_format(char*, ... ) EI_DEPRECATED_ATTR;
+int    erl_match(ETERM*, ETERM*) EI_DEPRECATED_ATTR;
+
+char **erl_global_names(int fd, int *count) EI_DEPRECATED_ATTR;
+int    erl_global_register(int fd, const char *name, ETERM *pid) EI_DEPRECATED_ATTR;
+int    erl_global_unregister(int fd, const char *name) EI_DEPRECATED_ATTR;
+ETERM *erl_global_whereis(int fd, const char *name, char *node) EI_DEPRECATED_ATTR;
+
+void   erl_init_malloc(Erl_Heap*,long) EI_DEPRECATED_ATTR;
+ETERM *erl_alloc_eterm(unsigned char) EI_DEPRECATED_ATTR;
+void   erl_eterm_release(void) EI_DEPRECATED_ATTR;
+void   erl_eterm_statistics(unsigned long*,unsigned long*) EI_DEPRECATED_ATTR;
+void   erl_free_array(ETERM**,int) EI_DEPRECATED_ATTR;
+void   erl_free_term(ETERM*) EI_DEPRECATED_ATTR;
+void   erl_free_compound(ETERM*) EI_DEPRECATED_ATTR;
+void  *erl_malloc(long) EI_DEPRECATED_ATTR;
+void   erl_free(void*) EI_DEPRECATED_ATTR;
+
+int    erl_compare_ext(unsigned char*, unsigned char*) EI_DEPRECATED_ATTR;
+ETERM *erl_decode(unsigned char*) EI_DEPRECATED_ATTR;
+ETERM *erl_decode_buf(unsigned char**) EI_DEPRECATED_ATTR;
+int    erl_encode(ETERM*,unsigned char*t) EI_DEPRECATED_ATTR;
+int    erl_encode_buf(ETERM*,unsigned char**) EI_DEPRECATED_ATTR;
+int    erl_ext_size(unsigned char*) EI_DEPRECATED_ATTR;
+unsigned char erl_ext_type(unsigned char*) EI_DEPRECATED_ATTR; /* Note: returned 'char' before R9C */
+unsigned char *erl_peek_ext(unsigned char*,int) EI_DEPRECATED_ATTR;
+int    erl_term_len(ETERM*) EI_DEPRECATED_ATTR;
+
+int cmp_latin1_vs_utf8(const char* sL, int lenL, const char* sU, int lenU) EI_DEPRECATED_ATTR;
 
 /* -------------------------------------------------------------------- */
 /*                      Wrappers around ei functions                    */
@@ -437,29 +442,29 @@ int cmp_latin1_vs_utf8(const char* sL, int lenL, const char* sU, int lenU);
  * Undocumented before R9C, included for compatibility with old code
  */
 
-struct hostent *erl_gethostbyname(const char *name);
-struct hostent *erl_gethostbyaddr(const char *addr, int len, int type);
+struct hostent *erl_gethostbyname(const char *name) EI_DEPRECATED_ATTR;
+struct hostent *erl_gethostbyaddr(const char *addr, int len, int type) EI_DEPRECATED_ATTR;
 struct hostent *erl_gethostbyname_r(const char *name, 
 				    struct hostent *hostp, 
 				    char *buffer, 
 				    int buflen, 
-				    int *h_errnop);
+				    int *h_errnop) EI_DEPRECATED_ATTR;
 struct hostent *erl_gethostbyaddr_r(const char *addr,
 				    int length, 
 				    int type, 
 				    struct hostent *hostp,
 				    char *buffer,  
 				    int buflen, 
-				    int *h_errnop);
+				    int *h_errnop) EI_DEPRECATED_ATTR;
 
 /* 
  * Undocumented, included for compatibility with old code
  */
 
-void erl_init_resolve(void);
-int erl_distversion(int fd);
-int erl_epmd_connect(struct in_addr *inaddr);
-int erl_epmd_port(struct in_addr *inaddr, const char *alive, int *dist);
+void erl_init_resolve(void) EI_DEPRECATED_ATTR;
+int erl_distversion(int fd) EI_DEPRECATED_ATTR;
+int erl_epmd_connect(struct in_addr *inaddr) EI_DEPRECATED_ATTR;
+int erl_epmd_port(struct in_addr *inaddr, const char *alive, int *dist) EI_DEPRECATED_ATTR;
 
 #ifdef __cplusplus
 }
diff --git a/lib/erl_interface/src/INSTALL b/lib/erl_interface/src/INSTALL
index b42a17ac46..bf3ca8b6a5 100644
--- a/lib/erl_interface/src/INSTALL
+++ b/lib/erl_interface/src/INSTALL
@@ -122,10 +122,10 @@ you can use the `configure' options `--x-includes=DIR' and
 Specifying the System Type
 ==========================
 
-   There may be some features `configure' can not figure out
+   There may be some features `configure' cannot figure out
 automatically, but needs to determine by the type of host the package
 will run on.  Usually `configure' can figure that out, but if it prints
-a message saying it can not guess the host type, give it the
+a message saying it cannot guess the host type, give it the
 `--host=TYPE' option.  TYPE can either be a short name for the system
 type, such as `sun4', or a canonical name with three fields:
      CPU-COMPANY-SYSTEM
diff --git a/lib/erl_interface/src/Makefile b/lib/erl_interface/src/Makefile
index 800557fbfe..00c49f1622 100644
--- a/lib/erl_interface/src/Makefile
+++ b/lib/erl_interface/src/Makefile
@@ -27,7 +27,9 @@ include $(ERL_TOP)/make/output.mk
 include $(ERL_TOP)/make/target.mk
 
 debug opt shared purify quantify purecov gcov:
+ifndef TERTIARY_BOOTSTRAP
 	$(make_verbose)$(MAKE) -f $(TARGET)/Makefile TYPE=$@
+endif
 
 clean depend docs release release_docs tests release_tests check xmllint:
 	$(make_verbose)$(MAKE) -f $(TARGET)/Makefile $@
diff --git a/lib/erl_interface/src/Makefile.in b/lib/erl_interface/src/Makefile.in
index 614e7325a9..b2600f0fab 100644
--- a/lib/erl_interface/src/Makefile.in
+++ b/lib/erl_interface/src/Makefile.in
@@ -31,12 +31,13 @@
 
 .PHONY : debug opt release clean distclean depend
 
-TARGET = @TARGET@
+include $(ERL_TOP)/make/target.mk
 
 # ----------------------------------------------------
 # Application version and release dir specification
 # ----------------------------------------------------
 include ../vsn.mk
+include $(ERL_TOP)/make/target.mk
 include $(TARGET)/eidefs.mk
 
 include $(ERL_TOP)/make/output.mk
@@ -126,6 +127,8 @@ else
 WARNFLAGS = @WFLAGS@
 endif
 
+WARNFLAGS += -DEI_NO_DEPR_WARN
+
 CFLAGS = @LIB_CFLAGS@ $(WARNFLAGS) $(INCFLAGS) $(TYPE_FLAGS)
 PROG_CFLAGS = @CFLAGS@ $(WARNFLAGS) $(INCFLAGS) $(TYPE_FLAGS) -Ilegacy
 
@@ -417,7 +420,8 @@ MISCSRC = \
 	misc/eimd5.c \
 	misc/get_type.c \
 	misc/show_msg.c \
-	misc/ei_compat.c
+	misc/ei_compat.c \
+	misc/ei_init.c
 
 REGISTRYSRC = \
 	registry/hash_dohash.c \
diff --git a/lib/erl_interface/src/README.internal b/lib/erl_interface/src/README.internal
index c1f2d6863f..42c45b46a9 100644
--- a/lib/erl_interface/src/README.internal
+++ b/lib/erl_interface/src/README.internal
@@ -167,12 +167,12 @@ NOTE!!!! Sending a "char" to macros like isupper(), isalpha() where
 the character is > 127 will cause serios problems on some
 machines/OS. The reason is that
 
-   'char' may be unsigned, i.e. the Swedish char '�' will 
+   'char' may be unsigned, i.e. the Swedish char 'ä' will 
    as a number be negativ.
 
    The implementation of isupper() and others will on some
    machines use an array that is indexed with the incoming
-   character code. The Swedish '�' will then create an access
+   character code. The Swedish 'ä' will then create an access
    on memory outside the array!
 
 This may give a random value as a result or a segmentation
@@ -219,7 +219,7 @@ There are some functions in the 'ei' library that uses the GCC and
 VC++ "long long" type. Unfortunately this can lead to some trouble.
 
 When user code is linked with the "libei.a" the linker will extract
-all objects files needed for resolving all symbol referenses
+all objects files needed for resolving all symbol references
 found. This means that you want to follow the rule that
 
  * To reduce executable code size we use resonably small C source
@@ -252,7 +252,7 @@ example is that in plain R9C the ei_x_encode_longlong() function is
 located in the file "ei_x_encode.c". So if any "long long" ei_x
 function is used we have an unessesary dependency on
 "ei_encode_longlong.o" and then need to link with GNU ld on with the
-user code or explicitely link with "libgcc.a". The situation can be
+user code or explicitly link with "libgcc.a". The situation can be
 visible in in plain R9C using
 
      % nm -A erl_interface-3.4/lib/libei.a | \
diff --git a/lib/erl_interface/src/connect/ei_connect.c b/lib/erl_interface/src/connect/ei_connect.c
index 9df4fa3b6c..be7a2a6b0e 100644
--- a/lib/erl_interface/src/connect/ei_connect.c
+++ b/lib/erl_interface/src/connect/ei_connect.c
@@ -42,10 +42,8 @@
 #include <inetLib.h>
 
 #include <unistd.h>
-#include <sys/types.h>
 #include <sys/times.h>
 #include <unistd.h>
-#include <sys/types.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <netinet/tcp.h> 
@@ -55,7 +53,6 @@
 
 #else /* some other unix */
 #include <unistd.h>
-#include <sys/types.h>
 #include <sys/times.h>
 
 #if TIME_WITH_SYS_TIME
@@ -84,6 +81,7 @@
 #include <string.h>
 #include <errno.h>
 #include <ctype.h>
+#include <stddef.h>
 
 #include "eiext.h"
 #include "ei_portio.h"
@@ -98,11 +96,16 @@
 #include "ei_epmd.h"
 #include "ei_internal.h"
 
+static int ei_connect_initialized = 0;
 int ei_tracelevel = 0;
 
 #define COOKIE_FILE "/.erlang.cookie"
 #define EI_MAX_HOME_PATH 1024
 
+#define EI_SOCKET_CALLBACKS_SZ_V1                       \
+    (offsetof(ei_socket_callbacks, get_fd)              \
+     + sizeof(int (*)(void *)))
+
 /* FIXME why not macro? */
 static char *null_cookie = "";
 
@@ -113,35 +116,51 @@ static int get_home(char *buf, int size);
 static unsigned gen_challenge(void);
 static void gen_digest(unsigned challenge, char cookie[], 
 		       unsigned char digest[16]);
-static int send_status(int fd, char *status, unsigned ms);
-static int recv_status(int fd, unsigned ms);
-static int send_challenge(int fd, char *nodename, 
-			  unsigned challenge, unsigned version, unsigned ms);
-static int recv_challenge(int fd, unsigned *challenge, 
-			  unsigned *version,
-			  unsigned *flags, ErlConnect *namebuf, unsigned ms);
-static int send_challenge_reply(int fd, unsigned char digest[16], 
+static int send_status(ei_socket_callbacks *cbs, void *ctx,
+                       int pkt_sz, char *status, unsigned ms);
+static int recv_status(ei_socket_callbacks *cbs, void *ctx,
+                       int pkt_sz, unsigned ms);
+static int send_challenge(ei_socket_callbacks *cbs, void *ctx, int pkt_sz,
+                          char *nodename, unsigned challenge,
+                          unsigned version, unsigned ms);
+static int recv_challenge(ei_socket_callbacks *cbs, void *ctx, int pkt_sz,
+                          unsigned *challenge, unsigned *version,
+			  unsigned *flags, char *namebuf, unsigned ms);
+static int send_challenge_reply(ei_socket_callbacks *cbs, void *ctx,
+                                int pkt_sz, unsigned char digest[16], 
 				unsigned challenge, unsigned ms);
-static int recv_challenge_reply(int fd, 
-				unsigned our_challenge,
+static int recv_challenge_reply(ei_socket_callbacks *cbs, void *ctx,
+                                int pkt_sz, unsigned our_challenge,
 				char cookie[], 
 				unsigned *her_challenge, unsigned ms);
-static int send_challenge_ack(int fd, unsigned char digest[16], unsigned ms);
-static int recv_challenge_ack(int fd, 
-			      unsigned our_challenge,
+static int send_challenge_ack(ei_socket_callbacks *cbs, void *ctx,
+                              int pkt_sz, unsigned char digest[16],
+                              unsigned ms);
+static int recv_challenge_ack(ei_socket_callbacks *cbs, void *ctx, 
+			      int pkt_sz, unsigned our_challenge,
 			      char cookie[], unsigned ms);
-static int send_name(int fd, char *nodename, 
-		     unsigned version, unsigned ms); 
+static int send_name(ei_socket_callbacks *cbs, void *ctx, int pkt_sz,
+                     char *nodename, unsigned version, unsigned ms); 
 
-/* Common for both handshake types */
-static int recv_name(int fd, 
-		     unsigned *version,
-		     unsigned *flags, ErlConnect *namebuf, unsigned ms);
+static int recv_name(ei_socket_callbacks *cbs, void *ctx, int pkt_sz,
+                     unsigned *version, unsigned *flags, char *namebuf,
+                     unsigned ms);
 
 static struct hostent*
 dyn_gethostbyname_r(const char *name, struct hostent *hostp, char **buffer_p,
                     int buflen, int *h_errnop);
 
+static void abort_connection(ei_socket_callbacks *cbs, void *ctx);
+static int close_connection(ei_socket_callbacks *cbs, void *ctx, int fd);
+
+static char *
+estr(int e)
+{
+    char *str = strerror(e);
+    if (!str)
+        return "unknown error";
+    return str;
+}
 
 
 /***************************************************************************
@@ -154,25 +173,208 @@ dyn_gethostbyname_r(const char *name, struct hostent *hostp, char **buffer_p,
 
 typedef struct ei_socket_info_s {
     int socket;
+    ei_socket_callbacks *cbs;
+    void *ctx;
     int dist_version;
     ei_cnode cnode;	/* A copy, not a pointer. We don't know when freed */
     char cookie[EI_MAX_COOKIE_SIZE+1];
 } ei_socket_info;
 
+/***************************************************************************
+ *
+ *  XXX
+ *
+ ***************************************************************************/
+
+#ifndef ETHR_HAVE___atomic_compare_exchange_n
+#  define ETHR_HAVE___atomic_compare_exchange_n 0
+#endif
+#ifndef ETHR_HAVE___atomic_load_n
+#  define ETHR_HAVE___atomic_load_n 0
+#endif
+#ifndef ETHR_HAVE___atomic_store_n
+#  define ETHR_HAVE___atomic_store_n 0
+#endif
+
+#if defined(_REENTRANT)                                                 \
+    && (!(ETHR_HAVE___atomic_compare_exchange_n & SIZEOF_VOID_P)        \
+        || !(ETHR_HAVE___atomic_load_n & SIZEOF_VOID_P)                 \
+        || !(ETHR_HAVE___atomic_store_n & SIZEOF_VOID_P))
+#  undef EI_DISABLE_SEQ_SOCKET_INFO
+#  define EI_DISABLE_SEQ_SOCKET_INFO
+#endif
+
+#ifdef __WIN32__
+#  undef EI_DISABLE_SEQ_SOCKET_INFO
+#  define EI_DISABLE_SEQ_SOCKET_INFO
+#endif
+
+#ifndef EI_DISABLE_SEQ_SOCKET_INFO
+
+#ifdef _REENTRANT
+
+#define EI_ATOMIC_CMPXCHG_ACQ_REL(VARP, XCHGP, NEW) \
+    __atomic_compare_exchange_n((VARP), (XCHGP), (NEW), 0, \
+                                __ATOMIC_ACQ_REL, __ATOMIC_ACQUIRE)
+#define EI_ATOMIC_LOAD_ACQ(VARP) \
+    __atomic_load_n((VARP), __ATOMIC_ACQUIRE)
+#define EI_ATOMIC_STORE_REL(VARP, NEW) \
+    __atomic_store_n((VARP), (NEW), __ATOMIC_RELEASE)
+
+#else /* ! _REENTRANT */
+
+#define EI_ATOMIC_CMPXCHG_ACQ_REL(VARP, XCHGP, NEW)    \
+    (*(VARP) == *(XCHGP)                               \
+     ? ((*(VARP) = (NEW)), !0)                         \
+     : ((*(XCHGP) = *(VARP)), 0))
+#define EI_ATOMIC_LOAD_ACQ(VARP) (*(VARP))
+#define EI_ATOMIC_STORE_REL(VARP, NEW) (*(VARP) = (NEW))
+
+#endif /* ! _REENTRANT */
+
+#define EI_SOCKET_INFO_SEG_BITS 5
+#define EI_SOCKET_INFO_SEG_SIZE (1 << EI_SOCKET_INFO_SEG_BITS)
+#define EI_SOCKET_INFO_SEG_MASK (EI_SOCKET_INFO_SEG_SIZE - 1)
+
+typedef struct {
+    int max_fds;
+    ei_socket_info *segments[1]; /* Larger in reality... */
+} ei_socket_info_data__;
+
+static ei_socket_info_data__ *socket_info_data = NULL;
+
+static int init_socket_info(int late)
+{
+    int max_fds;
+    int i;
+    size_t segments_len;
+    ei_socket_info_data__ *info_data, *xchg;
+
+    if (EI_ATOMIC_LOAD_ACQ(&socket_info_data) != NULL)
+        return 0; /* Already initialized... */
+    
+#if defined(HAVE_SYSCONF) && defined(_SC_OPEN_MAX)
+    max_fds = sysconf(_SC_OPEN_MAX);
+#else
+    max_fds = 1024;
+#endif
+
+    if (max_fds < 0)
+        return EIO;
+
+    segments_len = ((max_fds-1)/EI_SOCKET_INFO_SEG_SIZE + 1);
+    
+    info_data = malloc(sizeof(ei_socket_info_data__)
+                       + (sizeof(ei_socket_info *)*(segments_len-1)));
+    if (!info_data)
+        return ENOMEM;
+
+    info_data->max_fds = max_fds;
+    for (i = 0; i < segments_len; i++)
+        info_data->segments[i] = NULL;
+
+    xchg = NULL;
+    if (!EI_ATOMIC_CMPXCHG_ACQ_REL(&socket_info_data, &xchg, info_data))
+        free(info_data); /* Already initialized... */
+
+    return 0;
+}
+
+static int put_ei_socket_info(int fd, int dist_version, char* cookie, ei_cnode *ec,
+                              ei_socket_callbacks *cbs, void *ctx)
+{
+    int six;
+    ei_socket_info *seg, *si;
+    int socket;
+
+    if (fd < 0 || socket_info_data->max_fds <= fd)
+        return -1;
+
+    socket = fd;
+    six = fd >> EI_SOCKET_INFO_SEG_BITS;
+    seg = EI_ATOMIC_LOAD_ACQ(&socket_info_data->segments[six]);
+    
+    if (!seg) {
+        ei_socket_info *xchg;
+        int i;
+        seg = malloc(sizeof(ei_socket_info)*EI_SOCKET_INFO_SEG_SIZE);
+        if (!seg)
+            return -1;
+        for (i = 0; i < EI_SOCKET_INFO_SEG_SIZE; i++) {
+            seg[i].socket = -1;
+        }
+
+        xchg = NULL;
+        if (!EI_ATOMIC_CMPXCHG_ACQ_REL(&socket_info_data->segments[six], &xchg, seg)) {
+            free(seg);
+            seg = xchg;
+        }
+    }
+
+    si = &seg[fd & EI_SOCKET_INFO_SEG_MASK];
+
+    if (dist_version < 0) {
+        socket = -1;
+        si->cbs = NULL;
+        si->ctx = NULL;
+    }
+    else {
+        si->dist_version = dist_version;
+        si->cnode = *ec;
+        si->cbs = cbs;
+        si->ctx = ctx;
+        strcpy(si->cookie, cookie);
+    }
+
+    EI_ATOMIC_STORE_REL(&si->socket, socket);
+
+    return 0;
+}
+
+static ei_socket_info* get_ei_socket_info(int fd)
+{
+    int six, socket;
+    ei_socket_info *seg, *si;
+    
+    if (fd < 0 || socket_info_data->max_fds <= fd)
+        return NULL;
+    
+    six = fd >> EI_SOCKET_INFO_SEG_BITS;
+    seg = EI_ATOMIC_LOAD_ACQ(&socket_info_data->segments[six]);
+
+    if (!seg)
+        return NULL;
+    
+    si = &seg[fd & EI_SOCKET_INFO_SEG_MASK];
+    socket = EI_ATOMIC_LOAD_ACQ(&si->socket);
+    if (socket != fd)
+        return NULL;
+    return si;
+}
+    
+#else /* EI_DISABLE_SEQ_SOCKET_INFO */
+
 int ei_n_sockets = 0, ei_sz_sockets = 0;
 ei_socket_info *ei_sockets = NULL;
+
 #ifdef _REENTRANT
 ei_mutex_t* ei_sockets_lock = NULL;
 #endif /* _REENTRANT */
 
+static int init_socket_info(int late)
+{
+#ifdef _REENTRANT
+    if (late)
+        return ENOTSUP; /* Refuse doing unsafe initialization... */
+    ei_sockets_lock = ei_mutex_create();
+    if (!ei_sockets_lock)
+        return ENOMEM;
+#endif /* _REENTRANT */
+    return 0;
+}
 
-/***************************************************************************
- *
- *  XXX
- *
- ***************************************************************************/
-
-static int put_ei_socket_info(int fd, int dist_version, char* cookie, ei_cnode *ec)
+static int put_ei_socket_info(int fd, int dist_version, char* cookie, ei_cnode *ec,
+                              ei_socket_callbacks *cbs, void *ctx)
 {
     int i;
 
@@ -182,11 +384,13 @@ static int put_ei_socket_info(int fd, int dist_version, char* cookie, ei_cnode *
     for (i = 0; i < ei_n_sockets; ++i) {
 	if (ei_sockets[i].socket == fd) {
 	    if (dist_version == -1) {
-		memmove(&ei_sockets[i], &ei_sockets[i+1],
+                memmove(&ei_sockets[i], &ei_sockets[i+1],
 			sizeof(ei_sockets[0])*(ei_n_sockets-i-1));
 	    } else {
 		ei_sockets[i].dist_version = dist_version;
 		/* Copy the content, see ei_socket_info */
+                ei_sockets[i].cbs = cbs;
+                ei_sockets[i].ctx = ctx;
 		ei_sockets[i].cnode = *ec;
 		strcpy(ei_sockets[i].cookie, cookie);
 	    }
@@ -209,7 +413,9 @@ static int put_ei_socket_info(int fd, int dist_version, char* cookie, ei_cnode *
 	}
 	ei_sockets[ei_n_sockets].socket = fd;
 	ei_sockets[ei_n_sockets].dist_version = dist_version;
-	ei_sockets[i].cnode = *ec;
+	ei_sockets[ei_n_sockets].cnode = *ec;
+        ei_sockets[ei_n_sockets].cbs = cbs;
+        ei_sockets[ei_n_sockets].ctx = ctx;
 	strcpy(ei_sockets[ei_n_sockets].cookie, cookie);
 	++ei_n_sockets;
     }
@@ -219,14 +425,6 @@ static int put_ei_socket_info(int fd, int dist_version, char* cookie, ei_cnode *
     return 0;
 }
 
-#if 0
-/* FIXME not used ?! */
-static int remove_ei_socket_info(int fd, int dist_version, char* cookie)
-{
-    return put_ei_socket_info(fd, -1, NULL);
-}
-#endif
-
 static ei_socket_info* get_ei_socket_info(int fd)
 {
     int i;
@@ -248,6 +446,13 @@ static ei_socket_info* get_ei_socket_info(int fd)
     return NULL;
 }
 
+#endif /* EI_DISABLE_SEQ_SOCKET_INFO */
+
+static int remove_ei_socket_info(int fd)
+{
+    return put_ei_socket_info(fd, -1, NULL, NULL, NULL, NULL);
+}
+
 ei_cnode *ei_fd_to_cnode(int fd)
 {
     ei_socket_info *sockinfo = get_ei_socket_info(fd);
@@ -255,6 +460,19 @@ ei_cnode *ei_fd_to_cnode(int fd)
     return &sockinfo->cnode;
 }
 
+int ei_get_cbs_ctx__(ei_socket_callbacks **cbs, void **ctx, int fd)
+{
+    ei_socket_info *sockinfo = get_ei_socket_info(fd);
+    if (sockinfo) {
+        *cbs = sockinfo->cbs;
+        *ctx = sockinfo->ctx;
+        return 0;
+    }
+
+    *cbs = NULL;
+    *ctx = NULL;
+    return EBADF;
+}
 
 /***************************************************************************
  *  Get/Set tracelevel
@@ -333,21 +551,6 @@ const char *ei_getfdcookie(int fd)
     return r;
 }
 
-/* call with cookie to set value to use on descriptor fd,
-* or specify NULL to use default
-*/
-/* FIXME why defined but not used? */
-#if 0
-static int ei_setfdcookie(ei_cnode* ec, int fd, char *cookie)
-{
-    int dist_version = ei_distversion(fd);
-
-    if (cookie == NULL)
-	cookie = ec->ei_connect_cookie;
-    return put_ei_socket_info(fd, dist_version, cookie);
-}
-#endif
-
 static int get_int32(unsigned char *s)
 {
     return ((s[0] << 24) | (s[1] << 16) | (s[2] << 8) | (s[3] ));
@@ -400,35 +603,63 @@ static int initWinSock(void)
 }
 #endif
 
+static int init_connect(int late)
+{
+    int error;
+
+    /*
+     * 'late' is non-zero when not called via ei_init(). Such a
+     * call is not supported, but we for now save the day if
+     * it easy to do so; otherwise, return ENOTSUP.
+     */
+
+#ifdef __WIN32__
+    if (!initWinSock()) {
+	EI_TRACE_ERR0("ei_init_connect","can't initiate winsock");
+	return EIO;
+    }
+#endif /* win32 */
+
+    error = init_socket_info(late);
+    if (error) {
+        EI_TRACE_ERR0("ei_init_connect","can't initiate socket info");
+        return error;
+    }
+
+    ei_connect_initialized = !0;
+    return 0;
+}
+
+int ei_init_connect(void)
+{
+    return init_connect(0);
+}
+
 /*
 * Perhaps run this routine instead of ei_connect_init/2 ?
 * Initailize by setting:
 * thishostname, thisalivename, thisnodename and thisipaddr
 */
-int ei_connect_xinit(ei_cnode* ec, const char *thishostname,
-		     const char *thisalivename, const char *thisnodename,
-		     Erl_IpAddr thisipaddr, const char *cookie,
-		     const short creation)
+int ei_connect_xinit_ussi(ei_cnode* ec, const char *thishostname,
+                          const char *thisalivename, const char *thisnodename,
+                          Erl_IpAddr thisipaddr, const char *cookie,
+                          const short creation, ei_socket_callbacks *cbs,
+                          int cbs_sz, void *setup_context)
 {
     char *dbglevel;
-    
-/* FIXME this code was enabled for 'erl'_connect_xinit(), why not here? */
-#if 0    
-#ifdef __WIN32__
-    if (!initWinSock()) {
-	EI_TRACE_ERR0("ei_connect_xinit","can't initiate winsock");
-	return ERL_ERROR;
-    }
-#endif
-#endif
 
-#ifdef _REENTRANT
-    if (ei_sockets_lock == NULL) {
-	ei_sockets_lock = ei_mutex_create();
-    }
-#endif /* _REENTRANT */
+    if (!ei_connect_initialized)
+        init_connect(!0);
 
-    ec->creation = creation & 0x3; /* 2 bits */
+    if (cbs != &ei_default_socket_callbacks)
+        EI_SET_HAVE_PLUGIN_SOCKET_IMPL__;
+    
+    if (cbs_sz < EI_SOCKET_CALLBACKS_SZ_V1) {
+	EI_TRACE_ERR0("ei_connect_xinit","invalid size of ei_socket_callbacks struct");
+        return ERL_ERROR;
+    }
+    
+    ec->creation = creation;
     
     if (cookie) {
 	if (strlen(cookie) >= sizeof(ec->ei_connect_cookie)) { 
@@ -467,7 +698,10 @@ int ei_connect_xinit(ei_cnode* ec, const char *thishostname,
     strcpy(ec->self.node,thisnodename);
     ec->self.num = 0;
     ec->self.serial = 0;
-    ec->self.creation = creation & 0x3; /* 2 bits */
+    ec->self.creation = creation;
+
+    ec->cbs = cbs;
+    ec->setup_context = setup_context;
 
     if ((dbglevel = getenv("EI_TRACELEVEL")) != NULL ||
 	(dbglevel = getenv("ERL_DEBUG_DIST")) != NULL)
@@ -476,14 +710,27 @@ int ei_connect_xinit(ei_cnode* ec, const char *thishostname,
     return 0;
 }
 
+int ei_connect_xinit(ei_cnode* ec, const char *thishostname,
+                     const char *thisalivename, const char *thisnodename,
+                     Erl_IpAddr thisipaddr, const char *cookie,
+                     const short creation)
+{
+    return ei_connect_xinit_ussi(ec, thishostname, thisalivename, thisnodename,
+                                 thisipaddr, cookie, creation,
+                                 &ei_default_socket_callbacks,
+                                 sizeof(ei_default_socket_callbacks),
+                                 NULL);
+}
 
 /*
 * Initialize by set: thishostname, thisalivename, 
 * thisnodename and thisipaddr. At success return 0,
 * otherwise return -1.
 */
-int ei_connect_init(ei_cnode* ec, const char* this_node_name,
-		    const char *cookie, short creation)
+int ei_connect_init_ussi(ei_cnode* ec, const char* this_node_name,
+                         const char *cookie, short creation,
+                         ei_socket_callbacks *cbs, int cbs_sz,
+                         void *setup_context)
 {
     char thishostname[EI_MAXHOSTNAMELEN+1];
     char thisnodename[MAXNODELEN+1];
@@ -494,17 +741,8 @@ int ei_connect_init(ei_cnode* ec, const char* this_node_name,
     int ei_h_errno;
     int res;
 
-#ifdef __WIN32__
-    if (!initWinSock()) {
-	EI_TRACE_ERR0("ei_connect_xinit","can't initiate winsock");
-	return ERL_ERROR;
-    }
-#endif /* win32 */
-#ifdef _REENTRANT
-    if (ei_sockets_lock == NULL) {
-	ei_sockets_lock = ei_mutex_create();
-    }
-#endif /* _REENTRANT */
+    if (!ei_connect_initialized)
+        init_connect(!0);
     
     /* gethostname requires len to be max(hostname) + 1 */
     if (gethostname(thishostname, EI_MAXHOSTNAMELEN+1) == -1) {
@@ -561,43 +799,22 @@ int ei_connect_init(ei_cnode* ec, const char* this_node_name,
 	    sprintf(thisnodename, "%s@%s", this_node_name, hp->h_name);
 	}
     }
-    res = ei_connect_xinit(ec, thishostname, thisalivename, thisnodename,
-                           (struct in_addr *)*hp->h_addr_list, cookie, creation);
+    res = ei_connect_xinit_ussi(ec, thishostname, thisalivename, thisnodename,
+                                (struct in_addr *)*hp->h_addr_list, cookie, creation,
+                                cbs, cbs_sz, setup_context);
     if (buf != buffer)
         free(buf);
     return res;
 }
 
-
-/* connects to port at ip-address ip_addr 
-* and returns fd to socket 
-* port has to be in host byte order 
-*/
-static int cnct(uint16 port, struct in_addr *ip_addr, int addr_len, unsigned ms)
+int ei_connect_init(ei_cnode* ec, const char* this_node_name,
+                    const char *cookie, short creation)
 {
-    int s, res;
-    struct sockaddr_in iserv_addr;
-    
-    if ((s = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
-	erl_errno = errno;
-	return ERL_ERROR;
-    }
-    
-    memset((char*)&iserv_addr, 0, sizeof(struct sockaddr_in));
-    memcpy((char*)&iserv_addr.sin_addr, (char*)ip_addr, addr_len);
-    iserv_addr.sin_family = AF_INET;
-    iserv_addr.sin_port = htons(port);
-    
-    if ((res = ei_connect_t(s, (struct sockaddr*)&iserv_addr, 
-		      sizeof(iserv_addr),ms)) < 0) {
-	erl_errno = (res == -2) ? ETIMEDOUT : EIO;
-	closesocket(s);
-	return ERL_ERROR;
-    }
-    
-    return s;
-} /* cnct */
-
+    return ei_connect_init_ussi(ec, this_node_name, cookie, creation,
+                                &ei_default_socket_callbacks,
+                                sizeof(ei_default_socket_callbacks),
+                                NULL);
+}
 
 /*
  * Same as ei_gethostbyname_r, but also handles ERANGE error
@@ -758,91 +975,218 @@ int ei_connect(ei_cnode* ec, char *nodename)
   *  the node through epmd at that host 
   *
 */
-int ei_xconnect_tmo(ei_cnode* ec, Erl_IpAddr adr, char *alivename, unsigned ms)
+int ei_xconnect_tmo(ei_cnode* ec, Erl_IpAddr ip_addr, char *alivename, unsigned ms)
 {
-    struct in_addr *ip_addr=(struct in_addr *) adr;
+    ei_socket_callbacks *cbs = ec->cbs;
+    void *ctx;
     int rport = 0; /*uint16 rport = 0;*/
     int sockd;
-    int one = 1;
     int dist = 0;
-    ErlConnect her_name;
     unsigned her_flags, her_version;
-
+    unsigned our_challenge, her_challenge;
+    unsigned char our_digest[16];
+    int err;
+    int pkt_sz;
+    struct sockaddr_in addr;
+    unsigned tmo = ms == 0 ? EI_SCLBK_INF_TMO : ms;
+    
     erl_errno = EIO;		/* Default error code */
     
     EI_TRACE_CONN1("ei_xconnect","-> CONNECT attempt to connect to %s",
 		   alivename);
     
-    if ((rport = ei_epmd_port_tmo(ip_addr,alivename,&dist, ms)) < 0) {
+    if ((rport = ei_epmd_port_tmo(ip_addr,alivename,&dist, tmo)) < 0) {
 	EI_TRACE_ERR0("ei_xconnect","-> CONNECT can't get remote port");
 	/* ei_epmd_port_tmo() has set erl_errno */
 	return ERL_NO_PORT;
     }
-    
-    /* we now have port number to enode, try to connect */
-    if((sockd = cnct((uint16)rport, ip_addr, sizeof(struct in_addr),ms)) < 0) {
-	EI_TRACE_ERR0("ei_xconnect","-> CONNECT socket connect failed");
-	/* cnct() has set erl_errno */
-	return ERL_CONNECT_FAIL;
-    }
-    
-    EI_TRACE_CONN0("ei_xconnect","-> CONNECT connected to remote");
 
-    /* FIXME why connect before checking 'dist' output from ei_epmd_port() ?! */
     if (dist <= 4) {
 	EI_TRACE_ERR0("ei_xconnect","-> CONNECT remote version not compatible");
-	goto error;
+	return ERL_ERROR;
     }
-    else {
-	unsigned our_challenge, her_challenge;
-	unsigned char our_digest[16];
-	
-	if (send_name(sockd, ec->thisnodename, (unsigned) dist, ms))
-	    goto error;
-	if (recv_status(sockd, ms))
-	    goto error;
-	if (recv_challenge(sockd, &her_challenge, &her_version,
-	    &her_flags, &her_name, ms))
-	    goto error;
-	our_challenge = gen_challenge();
-	gen_digest(her_challenge, ec->ei_connect_cookie, our_digest);
-	if (send_challenge_reply(sockd, our_digest, our_challenge, ms))
-	    goto error;
-	if (recv_challenge_ack(sockd, our_challenge, 
-	    ec->ei_connect_cookie, ms))
-	    goto error;
-	put_ei_socket_info(sockd, dist, null_cookie, ec); /* FIXME check == 0 */
+
+    err = ei_socket_ctx__(cbs, &ctx, ec->setup_context);
+    if (err) {
+        EI_TRACE_ERR2("ei_xconnect","-> SOCKET failed: %s (%d)",
+                      estr(err), err);
+        erl_errno = err;
+        return ERL_CONNECT_FAIL;
+    }
+
+    memset((void *) &addr, 0, sizeof(struct sockaddr_in));
+    memcpy((void *) &addr.sin_addr, (void *) ip_addr, sizeof(addr.sin_addr));
+    addr.sin_family = AF_INET;
+    addr.sin_port = htons(rport);
+
+    err = ei_connect_ctx_t__(cbs, ctx, (void *) &addr, sizeof(addr), tmo);
+    if (err) {
+        EI_TRACE_ERR2("ei_xconnect","-> CONNECT socket connect failed: %s (%d)",
+                      estr(err), err);
+        abort_connection(cbs, ctx);
+        erl_errno = err;
+        return ERL_CONNECT_FAIL;
     }
     
-    setsockopt(sockd, IPPROTO_TCP, TCP_NODELAY, (char *)&one, sizeof(one));
-    setsockopt(sockd, SOL_SOCKET, SO_KEEPALIVE, (char *)&one, sizeof(one));
+    EI_TRACE_CONN0("ei_xconnect","-> CONNECT connected to remote");
 
-    EI_TRACE_CONN1("ei_xconnect","-> CONNECT (ok) remote = %s",alivename);
+    err = EI_GET_FD__(cbs, ctx, &sockd);
+    if (err) {
+        EI_CONN_SAVE_ERRNO__(err);
+        goto error;
+    }
+
+    err = cbs->handshake_packet_header_size(ctx, &pkt_sz);
+    if (err) {
+        EI_CONN_SAVE_ERRNO__(err);
+        goto error;
+    }
+        
+    if (send_name(cbs, ctx, pkt_sz, ec->thisnodename, (unsigned) dist, tmo))
+        goto error;
+    if (recv_status(cbs, ctx, pkt_sz, tmo))
+        goto error;
+    if (recv_challenge(cbs, ctx, pkt_sz, &her_challenge,
+                       &her_version, &her_flags, NULL, tmo))
+        goto error;
+    our_challenge = gen_challenge();
+    gen_digest(her_challenge, ec->ei_connect_cookie, our_digest);
+    if (send_challenge_reply(cbs, ctx, pkt_sz, our_digest, our_challenge, tmo))
+        goto error;
+    if (recv_challenge_ack(cbs, ctx, pkt_sz, our_challenge, 
+                           ec->ei_connect_cookie, tmo))
+        goto error;
+    if (put_ei_socket_info(sockd, dist, null_cookie, ec, cbs, ctx) != 0)
+        goto error;
+
+    if (cbs->connect_handshake_complete) {
+        err = cbs->connect_handshake_complete(ctx);
+        if (err) {
+            EI_TRACE_ERR2("ei_xconnect","-> CONNECT failed: %s (%d)",
+                          estr(err), err);
+            close_connection(cbs, ctx, sockd);
+            EI_CONN_SAVE_ERRNO__(err);
+            return ERL_ERROR;
+        }
+    }    
     
+    EI_TRACE_CONN1("ei_xconnect","-> CONNECT (ok) remote = %s",alivename);
+
     erl_errno = 0;
     return sockd;
     
 error:
     EI_TRACE_ERR0("ei_xconnect","-> CONNECT failed");
-    closesocket(sockd);
+    abort_connection(cbs, ctx);
     return ERL_ERROR;
 } /* ei_xconnect */
 
-int ei_xconnect(ei_cnode* ec, Erl_IpAddr adr, char *alivename)
+int ei_xconnect(ei_cnode* ec, Erl_IpAddr ip_addr, char *alivename)
 {
-    return ei_xconnect_tmo(ec, adr, alivename, 0);
+    return ei_xconnect_tmo(ec, ip_addr, alivename, 0);
 }
 
+int ei_listen(ei_cnode *ec, int *port, int backlog)
+{
+    struct in_addr ip_addr;
+    ip_addr.s_addr = htonl(INADDR_ANY);
+    return ei_xlisten(ec, &ip_addr, port, backlog);
+}
+
+int ei_xlisten(ei_cnode *ec, struct in_addr *ip_addr, int *port, int backlog)
+{
+    ei_socket_callbacks *cbs = ec->cbs;
+    struct sockaddr_in sock_addr;
+    void *ctx;
+    int fd, err, len;
+
+    err = ei_socket_ctx__(cbs, &ctx, ec->setup_context);
+    if (err) {
+        EI_TRACE_ERR2("ei_xlisten","-> SOCKET failed: %s (%d)",
+                      estr(err), err);
+        erl_errno = err;
+        return ERL_ERROR;
+    }
+
+    memset((void *) &sock_addr, 0, sizeof(struct sockaddr_in));
+    memcpy((void *) &sock_addr.sin_addr, (void *) ip_addr, sizeof(*ip_addr));
+    sock_addr.sin_family = AF_INET;
+    sock_addr.sin_port = htons((short) *port);
+
+    len = sizeof(sock_addr);
+    err = ei_listen_ctx__(cbs, ctx, (void *) &sock_addr, &len, backlog);
+    if (err) {
+        EI_TRACE_ERR2("ei_xlisten","-> listen failed: %s (%d)",
+                      estr(err), err);
+        erl_errno = err;
+        goto error;
+    }
+
+    if (len != sizeof(sock_addr)) {
+        if (len < offsetof(struct sockaddr_in, sin_addr) + sizeof(sock_addr.sin_addr)
+            || len < offsetof(struct sockaddr_in, sin_port) + sizeof(sock_addr.sin_port)) {
+            erl_errno = EIO;
+            EI_TRACE_ERR0("ei_xlisten","-> get info failed");
+            goto error;
+        }
+    }
+
+    memcpy((void *) ip_addr, (void *) &sock_addr.sin_addr, sizeof(*ip_addr));
+    *port = (int) ntohs(sock_addr.sin_port);
+    
+    err = EI_GET_FD__(cbs, ctx, &fd);
+    if (err) {
+        erl_errno = err;
+        goto error;
+    }
+
+    if (put_ei_socket_info(fd, 0, null_cookie, ec, cbs, ctx) != 0) {
+        EI_TRACE_ERR0("ei_xlisten","-> save socket info failed");
+        erl_errno = EIO;
+        goto error;
+    }
+    
+    erl_errno = 0;
+
+    return fd;
+    
+error:
+    abort_connection(cbs, ctx);
+    return ERL_ERROR;
+}
+    
+static int close_connection(ei_socket_callbacks *cbs, void *ctx, int fd)
+{
+    int err;
+    remove_ei_socket_info(fd);
+    err = ei_close_ctx__(cbs, ctx);
+    if (err) {
+        erl_errno = err;
+        return ERL_ERROR;
+    }
+    return 0;
+}
 
-  /* 
-  * For symmetry reasons
-*/
-#if 0
 int ei_close_connection(int fd)
 {
-    return closesocket(fd);
+    ei_socket_callbacks *cbs;
+    void *ctx;
+    int err = EI_GET_CBS_CTX__(&cbs, &ctx, fd);
+    if (err)
+        erl_errno = err;
+    else {
+        if (close_connection(cbs, ctx, fd) == 0)
+            return 0;
+    }
+    EI_TRACE_ERR2("ei_close_connection","<- CLOSE socket close failed: %s (%d)",
+                  estr(erl_errno), erl_errno);
+    return ERL_ERROR;
 } /* ei_close_connection */
-#endif
+
+static void abort_connection(ei_socket_callbacks *cbs, void *ctx)
+{
+    (void) ei_close_ctx__(cbs, ctx);
+}
 
   /*
   * Accept and initiate a connection from another
@@ -857,25 +1201,71 @@ int ei_accept(ei_cnode* ec, int lfd, ErlConnect *conp)
 int ei_accept_tmo(ei_cnode* ec, int lfd, ErlConnect *conp, unsigned ms)
 {
     int fd;
-    struct sockaddr_in cli_addr;
-    int cli_addr_len=sizeof(struct sockaddr_in);
     unsigned her_version, her_flags;
-    ErlConnect her_name;
+    char tmp_nodename[MAXNODELEN+1];
+    char *her_name;
+    int pkt_sz, err;
+    struct sockaddr_in addr;
+    int addr_len = sizeof(struct sockaddr_in);
+    ei_socket_callbacks *cbs;
+    void *ctx;
+    unsigned tmo = ms == 0 ? EI_SCLBK_INF_TMO : ms;
 
     erl_errno = EIO;		/* Default error code */
+    
+    err = EI_GET_CBS_CTX__(&cbs, &ctx, lfd);
+    if (err) {
+        EI_CONN_SAVE_ERRNO__(err);
+        return ERL_ERROR;
+    }
+
 
     EI_TRACE_CONN0("ei_accept","<- ACCEPT waiting for connection");
+
+    if (conp) {
+        her_name = &conp->nodename[0];
+    }
+    else {
+        her_name = &tmp_nodename[0];
+    }
     
-    if ((fd = ei_accept_t(lfd, (struct sockaddr*) &cli_addr, 
-	&cli_addr_len, ms )) < 0) {
-	EI_TRACE_ERR0("ei_accept","<- ACCEPT socket accept failed");
-	erl_errno = (fd == -2) ? ETIMEDOUT : EIO;
-	goto error;
+    /*
+     * ei_accept_ctx_t__() replaces the pointer to the listen context
+     * with a pointer to the accepted connection context on success.
+     */
+    err = ei_accept_ctx_t__(cbs, &ctx, (void *) &addr, &addr_len, tmo);
+    if (err) {
+	EI_TRACE_ERR2("ei_accept","<- ACCEPT socket accept failed: %s (%d)",
+                      estr(err), err);
+        EI_CONN_SAVE_ERRNO__(err);
+        return ERL_ERROR;
+    }
+
+    err = EI_GET_FD__(cbs, ctx, &fd);
+    if (err) {
+	EI_TRACE_ERR2("ei_accept","<- ACCEPT get fd failed: %s (%d)",
+                      estr(err), err);
+        EI_CONN_SAVE_ERRNO__(err);
+    }
+
+    if (addr_len != sizeof(struct sockaddr_in)) {
+        if (addr_len < (offsetof(struct sockaddr_in, sin_addr)
+                        + sizeof(addr.sin_addr))) {
+            EI_TRACE_ERR0("ei_accept","<- ACCEPT get addr failed");
+            goto error;
+        }
+    }
+
+    err = cbs->handshake_packet_header_size(ctx, &pkt_sz);
+    if (err) {
+	EI_TRACE_ERR2("ei_accept","<- ACCEPT get packet size failed: %s (%d)",
+                      estr(err), err);
+        EI_CONN_SAVE_ERRNO__(err);
     }
     
     EI_TRACE_CONN0("ei_accept","<- ACCEPT connected to remote");
     
-    if (recv_name(fd, &her_version, &her_flags, &her_name, ms)) {
+    if (recv_name(cbs, ctx, pkt_sz, &her_version, &her_flags, her_name, tmo)) {
 	EI_TRACE_ERR0("ei_accept","<- ACCEPT initial ident failed");
 	goto error;
     }
@@ -888,34 +1278,45 @@ int ei_accept_tmo(ei_cnode* ec, int lfd, ErlConnect *conp, unsigned ms)
 	unsigned our_challenge;
 	unsigned her_challenge;
 	unsigned char our_digest[16];
-	
-	if (send_status(fd,"ok", ms))
+        
+	if (send_status(cbs, ctx, pkt_sz, "ok", tmo))
 	    goto error;
 	our_challenge = gen_challenge();
-	if (send_challenge(fd, ec->thisnodename, 
-	    our_challenge, her_version, ms))
+	if (send_challenge(cbs, ctx, pkt_sz, ec->thisnodename, 
+                           our_challenge, her_version, tmo))
 	    goto error;
-	if (recv_challenge_reply(fd, our_challenge, 
-	    ec->ei_connect_cookie, 
-	    &her_challenge, ms))
+	if (recv_challenge_reply(cbs, ctx, pkt_sz, our_challenge, 
+                                 ec->ei_connect_cookie, &her_challenge, tmo))
 	    goto error;
 	gen_digest(her_challenge, ec->ei_connect_cookie, our_digest);
-	if (send_challenge_ack(fd, our_digest, ms))
+	if (send_challenge_ack(cbs, ctx, pkt_sz, our_digest, tmo))
 	    goto error;
-	put_ei_socket_info(fd, her_version, null_cookie, ec);
+	if (put_ei_socket_info(fd, her_version, null_cookie, ec, cbs, ctx) != 0)
+            goto error;
+    }
+    if (conp) {
+        memcpy((void *) conp->ipadr, (void *) &addr.sin_addr, sizeof(conp->ipadr));
+    }
+
+    if (cbs->accept_handshake_complete) {
+        err = cbs->accept_handshake_complete(ctx);
+        if (err) {
+            EI_TRACE_ERR2("ei_xconnect","-> ACCEPT handshake failed: %s (%d)",
+                          estr(err), err);
+            close_connection(cbs, ctx, fd);
+            EI_CONN_SAVE_ERRNO__(err);
+            return ERL_ERROR;
+        }
     }
-    if (conp) 
-	*conp = her_name;
     
-    EI_TRACE_CONN1("ei_accept","<- ACCEPT (ok) remote = %s",her_name.nodename);
+    EI_TRACE_CONN1("ei_accept","<- ACCEPT (ok) remote = %s",her_name);
 
     erl_errno = 0;		/* No error */
     return fd;
     
 error:
     EI_TRACE_ERR0("ei_accept","<- ACCEPT failed");
-    if (fd>=0)
-      closesocket(fd);
+    abort_connection(cbs, ctx);
     return ERL_ERROR;
 } /* ei_accept */
 
@@ -927,36 +1328,57 @@ error:
  */
 int ei_receive_tmo(int fd, unsigned char *bufp, int bufsize, unsigned ms) 
 {
-    int len;
+    ssize_t len;
     unsigned char fourbyte[4]={0,0,0,0};
-    int res;
- 
-    if ((res = ei_read_fill_t(fd, (char *) bufp, 4, ms))  != 4) {
-	erl_errno = (res == -2) ? ETIMEDOUT : EIO;
+    int err;
+    ei_socket_callbacks *cbs;
+    void *ctx;
+    unsigned tmo = ms == 0 ? EI_SCLBK_INF_TMO : ms;
+
+    err = EI_GET_CBS_CTX__(&cbs, &ctx, fd);
+    if (err) {
+        EI_CONN_SAVE_ERRNO__(err);
+        return ERL_ERROR;
+    }
+
+    len = (ssize_t) 4;
+    err = ei_read_fill_ctx_t__(cbs, ctx, (char *) bufp, &len, tmo);
+    if (!err && len != (ssize_t) 4)
+        err = EIO;
+    if (err) {
+        EI_CONN_SAVE_ERRNO__(err);
 	return ERL_ERROR;
     }
     
     /* Tick handling */
-    if ((len = get_int32(bufp)) == ERL_TICK) 
-    {
-	ei_write_fill_t(fd, (char *) fourbyte, 4, ms);
+    len = get_int32(bufp);
+    if (len == ERL_TICK) {
+        len = 4;
+	ei_write_fill_ctx_t__(cbs, ctx, (char *) fourbyte, &len, tmo);
 	/* FIXME ok to ignore error or timeout? */
 	erl_errno = EAGAIN;
 	return ERL_TICK;
     }
-    else if (len > bufsize) 
-    {
+    
+    if (len > bufsize) {
 	/* FIXME: We should drain the message. */
 	erl_errno = EMSGSIZE;
 	return ERL_ERROR;
     }
-    else if ((res = ei_read_fill_t(fd, (char *) bufp, len, ms)) != len)
-    {
-	erl_errno = (res == -2) ? ETIMEDOUT : EIO;
-	return ERL_ERROR;
+    else {
+        ssize_t need = len;
+        err = ei_read_fill_ctx_t__(cbs, ctx, (char *) bufp, &len, tmo);
+        if (err) {
+            EI_CONN_SAVE_ERRNO__(err);
+            return ERL_ERROR;
+        }
+        if (len != need) {
+            erl_errno = EIO;
+            return ERL_ERROR;
+        }
     }
     
-    return len;
+    return (int) len;
     
 }
 
@@ -1112,36 +1534,11 @@ int ei_rpc_to(ei_cnode *ec, int fd, char *mod, char *fun,
 int ei_rpc_from(ei_cnode *ec, int fd, int timeout, erlang_msg *msg,
 		ei_x_buff *x) 
 {
-    fd_set readmask;
-    struct timeval tv;
-    struct timeval *t = NULL;
-    
-    if (timeout >= 0) {
-	tv.tv_sec = timeout / 1000;
-	tv.tv_usec = (timeout % 1000) * 1000;
-	t = &tv;
-    }
-    
-    FD_ZERO(&readmask);
-    FD_SET(fd,&readmask);
-    
-    switch (select(fd+1, &readmask, NULL, NULL, t)) {
-    case -1: 
-	erl_errno = EIO;
-	return ERL_ERROR;
-	
-    case 0:
-	erl_errno = ETIMEDOUT;
-	return ERL_TIMEOUT;
-	
-    default:
-	if (FD_ISSET(fd, &readmask)) {
-	    return ei_xreceive_msg(fd, msg, x);
-	} else {
-	    erl_errno = EIO;
-	    return ERL_ERROR;
-	}
-    }
+    unsigned tmo = timeout < 0 ? EI_SCLBK_INF_TMO : (unsigned) timeout;
+    int res = ei_xreceive_msg_tmo(fd, msg, x, tmo);
+    if (res < 0 && erl_errno == ETIMEDOUT)
+        return ERL_TIMEOUT;
+    return res;
 } /* rpc_from */
 
   /*
@@ -1295,19 +1692,34 @@ static char *hex(char digest[16], char buff[33])
     return buff;
 }
 
-static int read_2byte_package(int fd, char **buf, int *buflen, 
-			      int *is_static, unsigned ms)
+static int read_hs_package(ei_socket_callbacks *cbs, void *ctx,
+                           int pkt_sz, char **buf, int *buflen, 
+                           int *is_static, unsigned ms)
 {
-    unsigned char nbuf[2];
+    unsigned char nbuf[4];
     unsigned char *x = nbuf;
-    unsigned len;
-    int res;
-    
-    if((res = ei_read_fill_t(fd, (char *)nbuf, 2, ms)) != 2) {
-	erl_errno = (res == -2) ? ETIMEDOUT : EIO;
+    ssize_t len, need;
+    int err;
+
+    len = (ssize_t) pkt_sz;
+    err = ei_read_fill_ctx_t__(cbs, ctx, (char *)nbuf, &len, ms);
+    if (!err && len != (ssize_t) pkt_sz)
+        err = EIO;
+    if (err) {
+        EI_CONN_SAVE_ERRNO__(err);
 	return -1;
     }
-    len = get16be(x);
+    
+    switch (pkt_sz) {
+    case 2:
+        len = get16be(x);
+        break;
+    case 4:
+        len = get32be(x);
+        break;
+    default:
+        return -1;
+    }
     
     if (len > *buflen) {
 	if (*is_static) {
@@ -1329,20 +1741,26 @@ static int read_2byte_package(int fd, char **buf, int *buflen,
 	    *buflen = len;
 	}
     }
-    if ((res = ei_read_fill_t(fd, *buf, len, ms)) != len) {
-	erl_errno = (res == -2) ? ETIMEDOUT : EIO;
+    need = len;
+    err = ei_read_fill_ctx_t__(cbs, ctx, *buf, &len, ms);
+    if (!err && len != need)
+        err = EIO;
+    if (err) {
+        EI_CONN_SAVE_ERRNO__(err);
 	return -1;
     }
     return len;
 }
 
 
-static int send_status(int fd, char *status, unsigned ms)
+static int send_status(ei_socket_callbacks *cbs, void *ctx,
+                       int pkt_sz, char *status, unsigned ms)
 {
     char *buf, *s;
     char dbuf[DEFBUF_SIZ];
-    int siz = strlen(status) + 1 + 2;
-    int res;
+    int siz = strlen(status) + 1 + pkt_sz;
+    int err;
+    ssize_t len;
 
     buf = (siz > DEFBUF_SIZ) ? malloc(siz) : dbuf;
     if (!buf) {
@@ -1350,14 +1768,28 @@ static int send_status(int fd, char *status, unsigned ms)
 	return -1;
     }
     s = buf;
-    put16be(s,siz - 2);
+    switch (pkt_sz) {
+    case 2:
+        put16be(s,siz - 2);
+        break;
+    case 4:
+        put32be(s,siz - 4);
+        break;
+    default:
+        return -1;
+    }
     put8(s, 's');
     memcpy(s, status, strlen(status));
-    if ((res = ei_write_fill_t(fd, buf, siz, ms)) != siz) {
-	EI_TRACE_ERR0("send_status","-> SEND_STATUS socket write failed");
+    len = (ssize_t) siz;
+    err = ei_write_fill_ctx_t__(cbs, ctx, buf, &len, ms);
+    if (!err && len != (ssize_t) siz)
+        err = EIO;
+    if (err) {
+	EI_TRACE_ERR2("send_status","-> SEND_STATUS socket write failed: %s (%d)",
+                      estr(err), err);
 	if (buf != dbuf)
-	    free(buf);
-	erl_errno = (res == -2) ? ETIMEDOUT : EIO;
+	    free(buf);        
+        EI_CONN_SAVE_ERRNO__(err);
 	return -1;
     }
     EI_TRACE_CONN1("send_status","-> SEND_STATUS (%s)",status);
@@ -1367,7 +1799,8 @@ static int send_status(int fd, char *status, unsigned ms)
     return 0;
 }
 
-static int recv_status(int fd, unsigned ms)
+static int recv_status(ei_socket_callbacks *cbs, void *ctx,
+                       int pkt_sz, unsigned ms)
 {
     char dbuf[DEFBUF_SIZ];
     char *buf = dbuf;
@@ -1375,7 +1808,8 @@ static int recv_status(int fd, unsigned ms)
     int buflen = DEFBUF_SIZ;
     int rlen;
     
-    if ((rlen = read_2byte_package(fd, &buf, &buflen, &is_static, ms)) <= 0) {
+    if ((rlen = read_hs_package(cbs, ctx, pkt_sz,
+                                &buf, &buflen, &is_static, ms)) <= 0) {
 	EI_TRACE_ERR1("recv_status",
 		      "<- RECV_STATUS socket read failed (%d)", rlen);
 	goto error;
@@ -1396,7 +1830,10 @@ error:
     return -1;
 }
 
-static int send_name_or_challenge(int fd, char *nodename,
+static int send_name_or_challenge(ei_socket_callbacks *cbs,
+                                  void *ctx,
+                                  int pkt_sz,
+                                  char *nodename,
 				  int f_chall,
 				  unsigned challenge,
 				  unsigned version,
@@ -1405,9 +1842,10 @@ static int send_name_or_challenge(int fd, char *nodename,
     char *buf;
     unsigned char *s;
     char dbuf[DEFBUF_SIZ];
-    int siz = 2 + 1 + 2 + 4 + strlen(nodename);
+    int siz = pkt_sz + 1 + 2 + 4 + strlen(nodename);
     const char* function[] = {"SEND_NAME", "SEND_CHALLENGE"};
-    int res;
+    int err;
+    ssize_t len;
 
     if (f_chall)
 	siz += 4;
@@ -1417,7 +1855,16 @@ static int send_name_or_challenge(int fd, char *nodename,
 	return -1;
     }
     s = (unsigned char *)buf;
-    put16be(s,siz - 2);
+    switch (pkt_sz) {
+    case 2:
+        put16be(s,siz - 2);
+        break;
+    case 4:
+        put32be(s,siz - 4);
+        break;
+    default:
+        return -1;
+    }
     put8(s, 'n');
     put16be(s, version);
     put32be(s, (DFLAG_EXTENDED_REFERENCES
@@ -1433,13 +1880,16 @@ static int send_name_or_challenge(int fd, char *nodename,
     if (f_chall)
 	put32be(s, challenge);
     memcpy(s, nodename, strlen(nodename));
-    
-    if ((res = ei_write_fill_t(fd, buf, siz, ms)) != siz) {
+    len = (ssize_t) siz;
+    err = ei_write_fill_ctx_t__(cbs, ctx, buf, &len, ms);
+    if (!err && len != (ssize_t) siz)
+        err = EIO;
+    if (err) {
 	EI_TRACE_ERR1("send_name_or_challenge",
 		      "-> %s socket write failed", function[f_chall]);
 	if (buf != dbuf)
 	    free(buf);
-	erl_errno = (res == -2) ? ETIMEDOUT : EIO;
+        EI_CONN_SAVE_ERRNO__(err);
 	return -1;
     }
     
@@ -1448,9 +1898,9 @@ static int send_name_or_challenge(int fd, char *nodename,
     return 0;
 }
 
-static int recv_challenge(int fd, unsigned *challenge, 
-			  unsigned *version,
-			  unsigned *flags, ErlConnect *namebuf, unsigned ms)
+static int recv_challenge(ei_socket_callbacks *cbs, void *ctx,
+                          int pkt_sz, unsigned *challenge, unsigned *version,
+			  unsigned *flags, char *namebuf, unsigned ms)
 {
     char dbuf[DEFBUF_SIZ];
     char *buf = dbuf;
@@ -1458,13 +1908,13 @@ static int recv_challenge(int fd, unsigned *challenge,
     int buflen = DEFBUF_SIZ;
     int rlen;
     char *s;
-    struct sockaddr_in sin;
-    socklen_t sin_len = sizeof(sin);
     char tag;
-    
+    char tmp_nodename[MAXNODELEN+1];
+
     erl_errno = EIO;		/* Default */
 
-    if ((rlen = read_2byte_package(fd, &buf, &buflen, &is_static, ms)) <= 0) {
+    if ((rlen = read_hs_package(cbs, ctx, pkt_sz, &buf, &buflen,
+                                &is_static, ms)) <= 0) {
 	EI_TRACE_ERR1("recv_challenge",
 		      "<- RECV_CHALLENGE socket read failed (%d)",rlen);
 	goto error;
@@ -1505,22 +1955,19 @@ static int recv_challenge(int fd, unsigned *challenge,
 	goto error;
     }
 
-    if (getpeername(fd, (struct sockaddr *) &sin, &sin_len) < 0) {
-	EI_TRACE_ERR0("recv_challenge","<- RECV_CHALLENGE can't get peername");
-	erl_errno = errno;
-	goto error;
-    }
-    memcpy(namebuf->ipadr, &(sin.sin_addr.s_addr), 
-	sizeof(sin.sin_addr.s_addr));
-    memcpy(namebuf->nodename, s, rlen - 11);
-    namebuf->nodename[rlen - 11] = '\0';
+    if (!namebuf)
+        namebuf = &tmp_nodename[0];
+    
+    memcpy(namebuf, s, rlen - 11);
+    namebuf[rlen - 11] = '\0';
+    
     if (!is_static)
 	free(buf);
     EI_TRACE_CONN4("recv_challenge","<- RECV_CHALLENGE (ok) node = %s, "
 	    "version = %u, "
 	    "flags = %u, "
 	    "challenge = %d",
-	    namebuf->nodename,
+	    namebuf,
 	    *version,
 	    *flags,
 	    *challenge
@@ -1533,24 +1980,40 @@ error:
     return -1;
 }
 
-static int send_challenge_reply(int fd, unsigned char digest[16], 
+static int send_challenge_reply(ei_socket_callbacks *cbs, void *ctx,
+                                int pkt_sz, unsigned char digest[16], 
 				unsigned challenge, unsigned ms) 
 {
     char *s;
     char buf[DEFBUF_SIZ];
-    int siz = 2 + 1 + 4 + 16;
-    int res;
+    int siz = pkt_sz + 1 + 4 + 16;
+    int err;
+    ssize_t len;
 
     s = buf;
-    put16be(s,siz - 2);
+    switch (pkt_sz) {
+    case 2:
+        put16be(s,siz - 2);
+        break;
+    case 4:
+        put32be(s,siz - 4);
+        break;
+    default:
+        return -1;
+    }
     put8(s, 'r');
     put32be(s, challenge);
     memcpy(s, digest, 16);
-    
-    if ((res = ei_write_fill_t(fd, buf, siz, ms)) != siz) {
-	EI_TRACE_ERR0("send_challenge_reply",
-		      "-> SEND_CHALLENGE_REPLY socket write failed");
-	erl_errno = (res == -2) ? ETIMEDOUT : EIO;
+
+    len = (ssize_t) siz;
+    err = ei_write_fill_ctx_t__(cbs, ctx, buf, &len, ms);
+    if (!err && len != (ssize_t) siz)
+        err = EIO;
+    if (err) {
+	EI_TRACE_ERR2("send_challenge_reply",
+		      "-> SEND_CHALLENGE_REPLY socket write failed: %s (%d)",
+                      estr(err), err);
+        EI_CONN_SAVE_ERRNO__(err);
 	return -1;
     }
     
@@ -1563,11 +2026,13 @@ static int send_challenge_reply(int fd, unsigned char digest[16],
     return 0;
 }
 
-static int recv_challenge_reply (int fd, 
-				 unsigned our_challenge,
-				 char cookie[], 
-				 unsigned *her_challenge,
-				 unsigned ms)
+static int recv_challenge_reply(ei_socket_callbacks *cbs,
+                                void *ctx,
+                                int pkt_sz,
+                                unsigned our_challenge,
+                                char cookie[], 
+                                unsigned *her_challenge,
+                                unsigned ms)
 {
     char dbuf[DEFBUF_SIZ];
     char *buf = dbuf;
@@ -1580,7 +2045,7 @@ static int recv_challenge_reply (int fd,
     
     erl_errno = EIO;		/* Default */
 
-    if ((rlen = read_2byte_package(fd, &buf, &buflen, &is_static, ms)) != 21) {
+    if ((rlen = read_hs_package(cbs, ctx, pkt_sz, &buf, &buflen, &is_static, ms)) != 21) {
 	EI_TRACE_ERR1("recv_challenge_reply",
 		      "<- RECV_CHALLENGE_REPLY socket read failed (%d)",rlen);
 	goto error;
@@ -1620,23 +2085,38 @@ error:
     return -1;
 }
 
-static int send_challenge_ack(int fd, unsigned char digest[16], unsigned ms) 
+static int send_challenge_ack(ei_socket_callbacks *cbs, void *ctx, int pkt_sz,
+                              unsigned char digest[16], unsigned ms) 
 {
     char *s;
     char buf[DEFBUF_SIZ];
-    int siz = 2 + 1 + 16;
-    int res;
+    int siz = pkt_sz + 1 + 16;
+    int err;
+    ssize_t len;
 
     s = buf;
-    
-    put16be(s,siz - 2);
+    switch (pkt_sz) {
+    case 2:
+        put16be(s,siz - 2);
+        break;
+    case 4:
+        put32be(s,siz - 4);
+        break;
+    default:
+        return -1;
+    }
     put8(s, 'a');
     memcpy(s, digest, 16);
 
-    if ((res = ei_write_fill_t(fd, buf, siz, ms)) != siz) {
-	EI_TRACE_ERR0("recv_challenge_reply",
-		      "-> SEND_CHALLENGE_ACK socket write failed");
-	erl_errno = (res == -2) ? ETIMEDOUT : EIO;
+    len = (ssize_t) siz;
+    err = ei_write_fill_ctx_t__(cbs, ctx, buf, &len, ms);
+    if (!err && len != (ssize_t) siz)
+        err = EIO;
+    if (err) {
+	EI_TRACE_ERR2("recv_challenge_reply",
+		      "-> SEND_CHALLENGE_ACK socket write failed: %s (%d)",
+                      estr(err), err);
+        EI_CONN_SAVE_ERRNO__(err);
 	return -1;
     }
     
@@ -1649,8 +2129,8 @@ static int send_challenge_ack(int fd, unsigned char digest[16], unsigned ms)
     return 0;
 }
 
-static int recv_challenge_ack(int fd, 
-			      unsigned our_challenge,
+static int recv_challenge_ack(ei_socket_callbacks *cbs, void *ctx,
+			      int pkt_sz, unsigned our_challenge,
 			      char cookie[], unsigned ms)
 {
     char dbuf[DEFBUF_SIZ];
@@ -1664,7 +2144,7 @@ static int recv_challenge_ack(int fd,
     
     erl_errno = EIO;		/* Default */
 
-    if ((rlen = read_2byte_package(fd, &buf, &buflen, &is_static, ms)) != 17) {
+    if ((rlen = read_hs_package(cbs, ctx, pkt_sz, &buf, &buflen, &is_static, ms)) != 17) {
 	EI_TRACE_ERR1("recv_challenge_ack",
 		      "<- RECV_CHALLENGE_ACK socket read failed (%d)",rlen);
 	goto error;
@@ -1701,20 +2181,24 @@ error:
     return -1;
 }
 
-static int send_name(int fd, char *nodename, unsigned version, unsigned ms) 
+static int send_name(ei_socket_callbacks *cbs, void *ctx, int pkt_sz,
+                     char *nodename, unsigned version, unsigned ms) 
 {
-    return send_name_or_challenge(fd, nodename, 0, 0, version, ms);
+    return send_name_or_challenge(cbs, ctx, pkt_sz, nodename, 0,
+                                  0, version, ms);
 }
 
-static int send_challenge(int fd, char *nodename, 
-			  unsigned challenge, unsigned version, unsigned ms)
+static int send_challenge(ei_socket_callbacks *cbs, void *ctx, int pkt_sz,
+                          char *nodename, unsigned challenge, unsigned version,
+                          unsigned ms)
 {
-    return send_name_or_challenge(fd, nodename, 1, challenge, version, ms);
+    return send_name_or_challenge(cbs, ctx, pkt_sz, nodename, 1,
+                                  challenge, version, ms);
 }
 
-static int recv_name(int fd, 
-		     unsigned *version,
-		     unsigned *flags, ErlConnect *namebuf, unsigned ms)
+static int recv_name(ei_socket_callbacks *cbs, void *ctx,
+                     int pkt_sz, unsigned *version,
+		     unsigned *flags, char *namebuf, unsigned ms)
 {
     char dbuf[DEFBUF_SIZ];
     char *buf = dbuf;
@@ -1722,13 +2206,13 @@ static int recv_name(int fd,
     int buflen = DEFBUF_SIZ;
     int rlen;
     char *s;
-    struct sockaddr_in sin;
-    socklen_t sin_len = sizeof(sin);
+    char tmp_nodename[MAXNODELEN+1];
     char tag;
     
     erl_errno = EIO;		/* Default */
 
-    if ((rlen = read_2byte_package(fd, &buf, &buflen, &is_static, ms)) <= 0) {
+    if ((rlen = read_hs_package(cbs, ctx, pkt_sz, &buf, &buflen,
+                                &is_static, ms)) <= 0) {
 	EI_TRACE_ERR1("recv_name","<- RECV_NAME socket read failed (%d)",rlen);
 	goto error;
     }
@@ -1759,21 +2243,18 @@ static int recv_name(int fd,
 	erl_errno = EIO;
 	goto error;
     }
-	  
-    if (getpeername(fd, (struct sockaddr *) &sin, &sin_len) < 0) {
-	EI_TRACE_ERR0("recv_name","<- RECV_NAME can't get peername");
-	erl_errno = errno;
-	goto error;
-    }
-    memcpy(namebuf->ipadr, &(sin.sin_addr.s_addr), 
-	sizeof(sin.sin_addr.s_addr));
-    memcpy(namebuf->nodename, s, rlen - 7);
-    namebuf->nodename[rlen - 7] = '\0';
+
+    if (!namebuf)
+        namebuf = &tmp_nodename[0];
+    
+    memcpy(namebuf, s, rlen - 7);
+    namebuf[rlen - 7] = '\0';
+
     if (!is_static)
 	free(buf);
     EI_TRACE_CONN3("recv_name",
 		   "<- RECV_NAME (ok) node = %s, version = %u, flags = %u",
-		   namebuf->nodename,*version,*flags);
+		   namebuf,*version,*flags);
     erl_errno = 0;
     return 0;
     
@@ -1867,3 +2348,4 @@ static int get_cookie(char *buf, int bufsize)
 
     return 1;			/* Success! */
 }
+
diff --git a/lib/erl_interface/src/connect/ei_resolve.c b/lib/erl_interface/src/connect/ei_resolve.c
index 022a43d255..225fddc784 100644
--- a/lib/erl_interface/src/connect/ei_resolve.c
+++ b/lib/erl_interface/src/connect/ei_resolve.c
@@ -57,9 +57,9 @@
 
 #ifdef HAVE_GETHOSTBYNAME_R
 
-void ei_init_resolve(void)
+int ei_init_resolve(void)
 {
-    return;			/* Do nothing */
+    return 0;			/* Do nothing */
 }
 
 #else /* !HAVE_GETHOSTBYNAME_R */
@@ -103,7 +103,7 @@ static int verify_dns_configuration(void);
  * our own, which are just wrappers around hostGetByName() and
  * hostGetByAddr(). Here we look up the functions.
  */
-void ei_init_resolve(void)
+int ei_init_resolve(void)
 {
 
 #ifdef VXWORKS
@@ -134,9 +134,12 @@ void ei_init_resolve(void)
 
 #ifdef _REENTRANT
   ei_gethost_sem = ei_mutex_create();
+  if (!ei_gethost_sem)
+      return ENOMEM;
 #endif /* _REENTRANT */
 
   ei_resolve_initialized = 1;
+  return 0;
 }
 
 #ifdef VXWORKS
@@ -312,9 +315,11 @@ static struct hostent *my_gethostbyname_r(const char *name,
   struct hostent *src;
   struct hostent *rval = NULL;
 
-  /* FIXME this should have been done in 'erl'_init()? */
-  if (!ei_resolve_initialized) ei_init_resolve(); 
-
+  if (!ei_resolve_initialized) {
+    *h_errnop = NO_RECOVERY;
+    return NULL;
+  }
+  
 #ifdef _REENTRANT
   /* === BEGIN critical section === */
   if (ei_mutex_lock(ei_gethost_sem,0) != 0) {
@@ -377,7 +382,10 @@ static struct hostent *my_gethostbyaddr_r(const char *addr,
   struct hostent *rval = NULL;
 
   /* FIXME this should have been done in 'erl'_init()? */
-  if (!ei_resolve_initialized) ei_init_resolve();
+  if (!ei_resolve_initialized) {
+    *h_errnop = NO_RECOVERY;
+    return NULL;
+  }
 
 #ifdef _REENTRANT
   /* === BEGIN critical section === */
diff --git a/lib/erl_interface/src/connect/ei_resolve.h b/lib/erl_interface/src/connect/ei_resolve.h
index 10a49ffbc6..5711d7da76 100644
--- a/lib/erl_interface/src/connect/ei_resolve.h
+++ b/lib/erl_interface/src/connect/ei_resolve.h
@@ -20,6 +20,6 @@
 #ifndef _EI_RESOLVE_H
 #define _EI_RESOLVE_H
 
-void ei_init_resolve(void);
+int ei_init_resolve(void);
 
 #endif /* _EI_RESOLVE_H */
diff --git a/lib/erl_interface/src/connect/eirecv.c b/lib/erl_interface/src/connect/eirecv.c
index 7b9dbfc387..47eea06ced 100644
--- a/lib/erl_interface/src/connect/eirecv.c
+++ b/lib/erl_interface/src/connect/eirecv.c
@@ -60,22 +60,36 @@ ei_recv_internal (int fd,
   int arity;
   int version;
   int index = 0;
-  int i = 0;
-  int res;
+  int err;
   int show_this_msg = 0;
+  ei_socket_callbacks *cbs;
+  void *ctx;
+  ssize_t rlen;
+  unsigned tmo = ms == 0 ? EI_SCLBK_INF_TMO : ms;
+
+  err = EI_GET_CBS_CTX__(&cbs, &ctx, fd);
+  if (err) {
+      EI_CONN_SAVE_ERRNO__(err);
+      return -1;
+  }
 
   /* get length field */
-  if ((res = ei_read_fill_t(fd, header, 4, ms)) != 4) 
-  {
-      erl_errno = (res == -2) ? ETIMEDOUT : EIO;
+  rlen = 4;
+  err = ei_read_fill_ctx_t__(cbs, ctx, header, &rlen, tmo);
+  if (!err && rlen != 4)
+      err = EIO;
+  if (err) {
+      EI_CONN_SAVE_ERRNO__(err);
       return -1;
   }
+  
   len = get32be(s);
 
   /* got tick - respond and return */
   if (!len) {
     char tock[] = {0,0,0,0};
-    ei_write_fill_t(fd, tock, sizeof(tock), ms); /* Failure no problem */
+    ssize_t wlen = sizeof(tock);
+    ei_write_fill_ctx_t__(cbs, ctx, tock, &wlen, tmo); /* Failure no problem */
     *msglenp = 0;
     return 0;			/* maybe flag ERL_EAGAIN [sverkerw] */
   }
@@ -86,9 +100,12 @@ ei_recv_internal (int fd,
   ei_trace(-1,NULL);
   
   /* read enough to get at least entire header */
-  bytesread = (len > EIRECVBUF ? EIRECVBUF : len); 
-  if ((i = ei_read_fill_t(fd,header,bytesread,ms)) != bytesread) {
-      erl_errno = (i == -2) ? ETIMEDOUT : EIO;
+  rlen = bytesread = (len > EIRECVBUF ? EIRECVBUF : len);
+  err = ei_read_fill_ctx_t__(cbs, ctx, header, &rlen, tmo);
+  if (!err && rlen != bytesread)
+      err = EIO;
+  if (err) {
+      EI_CONN_SAVE_ERRNO__(err);
       return -1;
   }
 
@@ -212,12 +229,17 @@ ei_recv_internal (int fd,
    */
   if (msglen > *bufsz) {
     if (staticbufp) {
-      int sz = EIRECVBUF;
       /* flush in rest of packet */
       while (remain > 0) {
-	if (remain < sz) sz = remain;
-	if ((i=ei_read_fill_t(fd,header,sz,ms)) <= 0) break;
-	remain -= i;
+          rlen = remain > EIRECVBUF ? EIRECVBUF : remain;
+          err = ei_read_fill_ctx_t__(cbs, ctx, header, &rlen, tmo);
+          if (err) {
+              EI_CONN_SAVE_ERRNO__(err);
+              return -1;
+          }
+          if (rlen == 0)
+              break;
+          remain -= rlen;
       }
       erl_errno = EMSGSIZE;
       return -1;
@@ -247,11 +269,15 @@ ei_recv_internal (int fd,
 
   /* read the rest of the message into callers buffer */
   if (remain > 0) {
-    if ((i = ei_read_fill_t(fd,mbuf+bytesread-index,remain,ms)) != remain) {
-      *msglenp = bytesread-index+1; /* actual bytes in users buffer */
-      erl_errno = (i == -2) ? ETIMEDOUT : EIO;
-      return -1;
-    }
+      rlen = remain;
+      err = ei_read_fill_ctx_t__(cbs, ctx, mbuf+bytesread-index, &rlen, tmo);
+      if (!err && rlen != remain)
+          err = EIO;
+      if (err) {
+          *msglenp = bytesread-index+1; /* actual bytes in users buffer */
+          EI_CONN_SAVE_ERRNO__(err);
+          return -1;
+      }
   }
 
   if (show_this_msg)
diff --git a/lib/erl_interface/src/connect/send.c b/lib/erl_interface/src/connect/send.c
index 37d7db6d68..d97532d123 100644
--- a/lib/erl_interface/src/connect/send.c
+++ b/lib/erl_interface/src/connect/send.c
@@ -58,10 +58,17 @@ int ei_send_encoded_tmo(int fd, const erlang_pid *to,
     char *s, header[1200]; /* see size calculation below */
     erlang_trace *token = NULL;
     int index = 5; /* reserve 5 bytes for control message */
-    int res;
-#ifdef HAVE_WRITEV
-    struct iovec v[2];
-#endif
+    int err;
+    ei_socket_callbacks *cbs;
+    void *ctx;
+    ssize_t len, tot_len;
+    unsigned tmo = ms == 0 ? EI_SCLBK_INF_TMO : ms;
+
+    err = EI_GET_CBS_CTX__(&cbs, &ctx, fd);
+    if (err) {
+        EI_CONN_SAVE_ERRNO__(err);
+        return ERL_ERROR;
+    }
 
     /* are we tracing? */
     /* check that he can receive trace tokens first */
@@ -91,30 +98,47 @@ int ei_send_encoded_tmo(int fd, const erlang_pid *to,
     if (ei_tracelevel >= 4)
 	ei_show_sendmsg(stderr,header,msg);
 
-#ifdef HAVE_WRITEV
-    
-    v[0].iov_base = (char *)header;
-    v[0].iov_len = index;
-    v[1].iov_base = (char *)msg;
-    v[1].iov_len = msglen;
-    
-    if ((res = ei_writev_fill_t(fd,v,2,ms)) != index+msglen) {
-	erl_errno = (res == -2) ? ETIMEDOUT : EIO;
-	return -1;
-    }
-  
-#else  /* !HAVE_WRITEV */
-  
-    if ((res = ei_write_fill_t(fd,header,index,ms)) != index) { 
-	erl_errno = (res == -2) ? ETIMEDOUT : EIO;
-	return -1;
+
+#ifdef EI_HAVE_STRUCT_IOVEC__
+    if (ei_socket_callbacks_have_writev__(cbs)) {
+        struct iovec v[2];
+
+        v[0].iov_base = (char *)header;
+        v[0].iov_len = index;
+        v[1].iov_base = (char *)msg;
+        v[1].iov_len = msglen;
+
+        len = tot_len = (ssize_t) index+msglen;
+        err = ei_writev_fill_ctx_t__(cbs, ctx, v, 2, &len, tmo);
+        if (!err && len != tot_len)
+            err = EIO;
+        if (err) {
+            EI_CONN_SAVE_ERRNO__(err);
+            return -1;
+        }
+
+        return 0;
     }
-    if ((res = ei_write_fill_t(fd,msg,msglen,ms)) != msglen) { 
-	erl_errno = (res == -2) ? ETIMEDOUT : EIO;
-	return -1;
+#endif /* EI_HAVE_STRUCT_IOVEC__ */
+
+    /* no writev() */
+    len = tot_len = (ssize_t) index;
+    err = ei_write_fill_ctx_t__(cbs, ctx, header, &len, tmo);
+    if (!err && len != tot_len)
+        err = EIO;
+    if (err) {
+        EI_CONN_SAVE_ERRNO__(err);
+        return -1;
     }
 
-#endif  /* !HAVE_WRITEV */
+    len = tot_len = (ssize_t) msglen;
+    err = ei_write_fill_ctx_t__(cbs, ctx, msg, &len, tmo);
+    if (!err && len != tot_len)
+        err = EIO;
+    if (err) {
+        EI_CONN_SAVE_ERRNO__(err);
+        return -1;
+    }
 
     return 0;
 }
diff --git a/lib/erl_interface/src/connect/send_exit.c b/lib/erl_interface/src/connect/send_exit.c
index 2e298e3221..b4f7e14c7f 100644
--- a/lib/erl_interface/src/connect/send_exit.c
+++ b/lib/erl_interface/src/connect/send_exit.c
@@ -55,6 +55,17 @@ int ei_send_exit_tmo(int fd, const erlang_pid *from, const erlang_pid *to,
   char *s;
   int index = 0;
   int len = strlen(reason) + 1080; /* see below */
+  ei_socket_callbacks *cbs;
+  void *ctx;
+  int err;
+  ssize_t wlen;
+  unsigned tmo = ms == 0 ? EI_SCLBK_INF_TMO : ms;
+  
+  err = EI_GET_CBS_CTX__(&cbs, &ctx, fd);
+  if (err) {
+      EI_CONN_SAVE_ERRNO__(err);
+      return ERL_ERROR;
+  }
 
   if (len > EISMALLBUF)
     if (!(dbuf = malloc(len)))
@@ -92,10 +103,16 @@ int ei_send_exit_tmo(int fd, const erlang_pid *from, const erlang_pid *to,
   if (ei_tracelevel >= 4)
       ei_show_sendmsg(stderr,msgbuf,NULL);
 
-  ei_write_fill_t(fd,msgbuf,index,ms); 
-  /* FIXME ignore timeout etc? erl_errno?! */
-
-  if (dbuf) free(dbuf);
+  wlen = (ssize_t) index;
+  err = ei_write_fill_ctx_t__(cbs, ctx, msgbuf, &wlen, tmo);
+  if (!err && wlen != (ssize_t) index)
+      err = EIO;
+  if (dbuf)
+      free(dbuf);
+  if (err) {
+      EI_CONN_SAVE_ERRNO__(err);
+      return ERL_ERROR;
+  }
   return 0;
 }
 
diff --git a/lib/erl_interface/src/connect/send_reg.c b/lib/erl_interface/src/connect/send_reg.c
index 62478f042d..80d61e57b5 100644
--- a/lib/erl_interface/src/connect/send_reg.c
+++ b/lib/erl_interface/src/connect/send_reg.c
@@ -51,11 +51,17 @@ int ei_send_reg_encoded_tmo(int fd, const erlang_pid *from,
     char *s, header[1400]; /* see size calculation below */
     erlang_trace *token = NULL;
     int index = 5; /* reserve 5 bytes for control message */
-    int res;
+    int err;
+    ei_socket_callbacks *cbs;
+    void *ctx;
+    ssize_t len, tot_len;
+    unsigned tmo = ms == 0 ? EI_SCLBK_INF_TMO : ms;
 
-#ifdef HAVE_WRITEV
-    struct iovec v[2];
-#endif
+    err = EI_GET_CBS_CTX__(&cbs, &ctx, fd);
+    if (err) {
+        EI_CONN_SAVE_ERRNO__(err);
+        return ERL_ERROR;
+    }
     
     /* are we tracing? */
     /* check that he can receive trace tokens first */
@@ -86,29 +92,45 @@ int ei_send_reg_encoded_tmo(int fd, const erlang_pid *from,
     if (ei_tracelevel >= 4) 
 	ei_show_sendmsg(stderr,header,msg);
 
-#ifdef HAVE_WRITEV
+#ifdef EI_HAVE_STRUCT_IOVEC__
+    if (ei_socket_callbacks_have_writev__(cbs)) {
+        struct iovec v[2];
 
-    v[0].iov_base = (char *)header;
-    v[0].iov_len = index;
-    v[1].iov_base = (char *)msg;
-    v[1].iov_len = msglen;
+        v[0].iov_base = (char *)header;
+        v[0].iov_len = index;
+        v[1].iov_base = (char *)msg;
+        v[1].iov_len = msglen;
     
-    if ((res = ei_writev_fill_t(fd,v,2,ms)) != index+msglen) {
-	erl_errno = (res == -2) ? ETIMEDOUT : EIO;
-	return -1;
+        len = tot_len = (ssize_t) index+msglen;
+        err = ei_writev_fill_ctx_t__(cbs, ctx, v, 2, &len, tmo);
+        if (!err && len != tot_len)
+            err = EIO;
+        if (err) {
+            EI_CONN_SAVE_ERRNO__(err);
+            return -1;
+        }
+        return 0;
     }
-#else
-    
+#endif /* EI_HAVE_STRUCT_IOVEC__ */
+
     /* no writev() */
-    if ((res = ei_write_fill_t(fd,header,index,ms)) != index) {
-	erl_errno = (res == -2) ? ETIMEDOUT : EIO;
-	return -1;
+    len = tot_len = (ssize_t) index;
+    err = ei_write_fill_ctx_t__(cbs, ctx, header, &len, tmo);
+    if (!err && len != tot_len)
+        err = EIO;
+    if (err) {
+        EI_CONN_SAVE_ERRNO__(err);
+        return -1;
     }
-    if ((res = ei_write_fill_t(fd,msg,msglen,ms)) != msglen) {
-	erl_errno = (res == -2) ? ETIMEDOUT : EIO;
-	return -1;
+
+    len = tot_len = (ssize_t) msglen;
+    err = ei_write_fill_ctx_t__(cbs, ctx, msg, &len, tmo);
+    if (!err && len != tot_len)
+        err = EIO;
+    if (err) {
+        EI_CONN_SAVE_ERRNO__(err);
+        return -1;
     }
-#endif
     
     return 0;
 }
diff --git a/lib/erl_interface/src/encode/encode_pid.c b/lib/erl_interface/src/encode/encode_pid.c
index d14746b40f..0dfdb16372 100644
--- a/lib/erl_interface/src/encode/encode_pid.c
+++ b/lib/erl_interface/src/encode/encode_pid.c
@@ -25,7 +25,6 @@
 int ei_encode_pid(char *buf, int *index, const erlang_pid *p)
 {
   char* s = buf + *index;
-  const char tag = (p->creation > 3) ? ERL_NEW_PID_EXT : ERL_PID_EXT;
 
   ++(*index); /* skip ERL_PID_EXT */
   if (ei_encode_atom_len_as(buf, index, p->node, strlen(p->node),
@@ -33,21 +32,17 @@ int ei_encode_pid(char *buf, int *index, const erlang_pid *p)
       return -1;
 
   if (buf) {
-    put8(s, tag);
+    put8(s, ERL_NEW_PID_EXT);
 
     s = buf + *index;
 
     /* now the integers */
     put32be(s,p->num & 0x7fff); /* 15 bits */
     put32be(s,p->serial & 0x1fff); /* 13 bits */
-    if (tag == ERL_PID_EXT) {
-        put8(s,(p->creation & 0x03)); /* 2 bits */
-    } else {
-        put32be(s, p->creation); /* 32 bits */
-    }
+    put32be(s, p->creation); /* 32 bits */
   }
 
-  *index += 4 + 4 + (tag == ERL_PID_EXT ? 1 : 4);
+  *index += 4 + 4 + 4;
   return 0;
 }
 
diff --git a/lib/erl_interface/src/encode/encode_port.c b/lib/erl_interface/src/encode/encode_port.c
index eb464380c0..0fb4018db1 100644
--- a/lib/erl_interface/src/encode/encode_port.c
+++ b/lib/erl_interface/src/encode/encode_port.c
@@ -25,7 +25,6 @@
 int ei_encode_port(char *buf, int *index, const erlang_port *p)
 {
   char *s = buf + *index;
-  const char tag = p->creation > 3 ? ERL_NEW_PORT_EXT : ERL_PORT_EXT;
 
   ++(*index); /* skip ERL_PORT_EXT */
   if (ei_encode_atom_len_as(buf, index, p->node, strlen(p->node), ERLANG_UTF8,
@@ -33,19 +32,15 @@ int ei_encode_port(char *buf, int *index, const erlang_port *p)
       return -1;
   }
   if (buf) {
-    put8(s, tag);
+    put8(s, ERL_NEW_PORT_EXT);
 
     s = buf + *index;
 
     /* now the integers */
     put32be(s,p->id & 0x0fffffff /* 28 bits */);
-    if (tag == ERL_PORT_EXT) {
-        put8(s,(p->creation & 0x03));
-    } else {
-        put32be(s, p->creation);
-    }
+    put32be(s, p->creation);
   }
-  *index += 4 + (tag == ERL_PORT_EXT ? 1 : 4);
+  *index += 4 + 4;
   return 0;
 }
 
diff --git a/lib/erl_interface/src/encode/encode_ref.c b/lib/erl_interface/src/encode/encode_ref.c
index 5ccfc32c6d..8c2e0a25f7 100644
--- a/lib/erl_interface/src/encode/encode_ref.c
+++ b/lib/erl_interface/src/encode/encode_ref.c
@@ -24,7 +24,6 @@
 
 int ei_encode_ref(char *buf, int *index, const erlang_ref *p)
 {
-  const char tag = (p->creation > 3) ? ERL_NEWER_REFERENCE_EXT : ERL_NEW_REFERENCE_EXT;
   char *s = buf + *index;
   int i;
 
@@ -37,7 +36,7 @@ int ei_encode_ref(char *buf, int *index, const erlang_ref *p)
   /* Always encode as an extended reference; all participating parties
      are now expected to be able to decode extended references. */
   if (buf) {
-	  put8(s, tag);
+	  put8(s, ERL_NEWER_REFERENCE_EXT);
 
 	  /* first, number of integers */
 	  put16be(s, p->len);
@@ -46,15 +45,12 @@ int ei_encode_ref(char *buf, int *index, const erlang_ref *p)
 	  s = buf + *index;
 
 	  /* now the integers */
-          if (tag == ERL_NEW_REFERENCE_EXT)
-              put8(s,(p->creation & 0x03));
-          else
-              put32be(s, p->creation);
+          put32be(s, p->creation);
 	  for (i = 0; i < p->len; i++)
 	      put32be(s,p->n[i]);
   }
   
-  *index += p->len*4 + (tag == ERL_NEW_REFERENCE_EXT ? 1 : 4);
+  *index += p->len*4 + 4;
   return 0;
 }
 
diff --git a/lib/erl_interface/src/epmd/ei_epmd.h b/lib/erl_interface/src/epmd/ei_epmd.h
index ac153b6e66..f72c354e32 100644
--- a/lib/erl_interface/src/epmd/ei_epmd.h
+++ b/lib/erl_interface/src/epmd/ei_epmd.h
@@ -25,8 +25,8 @@
 #endif
 
 #ifndef EI_DIST_HIGH
-#define EI_DIST_HIGH 5 /* R4 and later */
-#define EI_DIST_LOW  1 /* R3 and earlier */
+#define EI_DIST_HIGH 6 /* OTP 22 and later */
+#define EI_DIST_LOW  5 /* OTP R4 - 21 */
 #endif
 
 #ifndef EPMD_PORT
@@ -45,6 +45,7 @@
 #ifndef EI_EPMD_ALIVE2_REQ
 #define EI_EPMD_ALIVE2_REQ  120
 #define EI_EPMD_ALIVE2_RESP 121
+#define EI_EPMD_ALIVE2_X_RESP 118
 #define EI_EPMD_PORT2_REQ   122
 #define EI_EPMD_PORT2_RESP  119
 #define EI_EPMD_STOP_REQ      's'
diff --git a/lib/erl_interface/src/epmd/epmd_port.c b/lib/erl_interface/src/epmd/epmd_port.c
index 2ec418b24a..492c3fb3aa 100644
--- a/lib/erl_interface/src/epmd/epmd_port.c
+++ b/lib/erl_interface/src/epmd/epmd_port.c
@@ -62,31 +62,38 @@
 int ei_epmd_connect_tmo(struct in_addr *inaddr, unsigned ms)
 {
   static unsigned int epmd_port = 0;
-  struct sockaddr_in saddr;
-  int sd;
-  int res;
+  int port, sd, err;
+  struct in_addr ip_addr;
+  struct sockaddr_in addr;
+  unsigned tmo = ms == 0 ? EI_SCLBK_INF_TMO : ms;
+
+  err = ei_socket__(&sd);
+  if (err) {
+      erl_errno = err;
+      return -1;
+  }
 
   if (epmd_port == 0) {
       char* port_str = getenv("ERL_EPMD_PORT");
       epmd_port = (port_str != NULL) ? atoi(port_str) : EPMD_PORT;
   }
-  memset(&saddr, 0, sizeof(saddr)); 
-  saddr.sin_port = htons(epmd_port);
-  saddr.sin_family = AF_INET;
 
-  if (!inaddr) saddr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
-  else memmove(&saddr.sin_addr,inaddr,sizeof(saddr.sin_addr));
+  port = (int) epmd_port;
 
-  if (((sd = socket(PF_INET, SOCK_STREAM, 0)) < 0))
-  {
-      erl_errno = errno;
-      return -1;
+  if (!inaddr) {      
+      ip_addr.s_addr = htonl(INADDR_LOOPBACK);
+      inaddr = &ip_addr;
   }
+  
+  memset((void *) &addr, 0, sizeof(struct sockaddr_in));
+  memcpy((void *) &addr.sin_addr, (void *) inaddr, sizeof(addr.sin_addr));
+  addr.sin_family = AF_INET;
+  addr.sin_port = htons(port);
 
-  if ((res = ei_connect_t(sd,(struct sockaddr *)&saddr,sizeof(saddr),ms)) < 0) 
-  {
-      erl_errno = (res == -2) ? ETIMEDOUT : errno;
-      closesocket(sd);
+  err = ei_connect_t__(sd, (void *) &addr, sizeof(addr), tmo);
+  if (err) {
+      erl_errno = err;
+      ei_close__(sd);
       return -1;
   }
 
@@ -104,6 +111,9 @@ static int ei_epmd_r4_port (struct in_addr *addr, const char *alive,
   int port;
   int dist_high, dist_low, proto;
   int res;
+  int err;
+  ssize_t dlen;
+  unsigned tmo = ms == 0 ? EI_SCLBK_INF_TMO : ms;
 #if defined(VXWORKS)
   char ntoabuf[32];
 #endif
@@ -124,10 +134,14 @@ static int ei_epmd_r4_port (struct in_addr *addr, const char *alive,
       return -1;
   }
 
-  if ((res = ei_write_fill_t(fd, buf, len+2, ms)) != len+2) {
-    closesocket(fd);
-    erl_errno = (res == -2) ? ETIMEDOUT : EIO;
-    return -1;
+  dlen = len + 2;
+  err = ei_write_fill_t__(fd, buf, &dlen, tmo);
+  if (!err && dlen != (ssize_t) len + 2)
+      erl_errno = EIO;
+  if (err) {
+      ei_close__(fd);
+      EI_CONN_SAVE_ERRNO__(err);
+      return -1;
   }
 
 #ifdef VXWORKS
@@ -142,12 +156,15 @@ static int ei_epmd_r4_port (struct in_addr *addr, const char *alive,
 		 "-> PORT2_REQ alive=%s ip=%s",alive,inet_ntoa(*addr));
 #endif
 
-  /* read first two bytes (response type, response) */
-  if ((res = ei_read_fill_t(fd, buf, 2, ms)) != 2) {
-    EI_TRACE_ERR0("ei_epmd_r4_port","<- CLOSE");
-    erl_errno = (res == -2) ? ETIMEDOUT : EIO;
-    closesocket(fd);
-    return -2;			/* version mismatch */
+  dlen = (ssize_t) 2;
+  err = ei_read_fill_t__(fd, buf, &dlen, tmo);
+  if (!err && dlen != (ssize_t) 2)
+      erl_errno = EIO;
+  if (err) {
+      EI_TRACE_ERR0("ei_epmd_r4_port","<- CLOSE");
+      ei_close__(fd);
+      EI_CONN_SAVE_ERRNO__(err);
+      return -2;
   }
 
   s = buf;
@@ -156,7 +173,7 @@ static int ei_epmd_r4_port (struct in_addr *addr, const char *alive,
   if (res != EI_EPMD_PORT2_RESP) { /* response type */
     EI_TRACE_ERR1("ei_epmd_r4_port","<- unknown (%d)",res);
     EI_TRACE_ERR0("ei_epmd_r4_port","-> CLOSE");
-    closesocket(fd);
+    ei_close__(fd);
     erl_errno = EIO;
     return -1;
   }
@@ -167,7 +184,7 @@ static int ei_epmd_r4_port (struct in_addr *addr, const char *alive,
   if ((res = get8(s))) {
     /* got negative response */
     EI_TRACE_ERR1("ei_epmd_r4_port","<- PORT2_RESP result=%d (failure)",res);
-    closesocket(fd);
+    ei_close__(fd);
     erl_errno = EIO;
     return -1;
   }
@@ -175,14 +192,18 @@ static int ei_epmd_r4_port (struct in_addr *addr, const char *alive,
   EI_TRACE_CONN1("ei_epmd_r4_port","<- PORT2_RESP result=%d (ok)",res);
 
   /* expecting remaining 8 bytes */
-  if ((res = ei_read_fill_t(fd,buf,8,ms)) != 8) {
+  dlen = (ssize_t) 8;
+  err = ei_read_fill_t__(fd, buf, &dlen, tmo);
+  if (!err && dlen != (ssize_t) 8)
+      err = EIO;
+  if (err) {
     EI_TRACE_ERR0("ei_epmd_r4_port","<- CLOSE");
-    erl_errno = (res == -2) ? ETIMEDOUT : EIO;
-    closesocket(fd);
+    ei_close__(fd);
+    EI_CONN_SAVE_ERRNO__(err);
     return -1;
   }
   
-  closesocket(fd);
+  ei_close__(fd);
   s = buf;
 
   port = get16be(s);
diff --git a/lib/erl_interface/src/epmd/epmd_publish.c b/lib/erl_interface/src/epmd/epmd_publish.c
index 47d68a6db0..ef8a5d6b70 100644
--- a/lib/erl_interface/src/epmd/epmd_publish.c
+++ b/lib/erl_interface/src/epmd/epmd_publish.c
@@ -68,8 +68,11 @@ static int ei_epmd_r4_publish (int port, const char *alive, unsigned ms)
   int nlen = strlen(alive);
   int len = elen + nlen + 13; /* hard coded: be careful! */
   int n;
-  int res, creation;
-  
+  int err, response, res;
+  unsigned creation;
+  ssize_t dlen;
+  unsigned tmo = ms == 0 ? EI_SCLBK_INF_TMO : ms;
+
   if (len > sizeof(buf)-2)
   {
     erl_errno = ERANGE;
@@ -93,29 +96,41 @@ static int ei_epmd_r4_publish (int port, const char *alive, unsigned ms)
 
   if ((fd = ei_epmd_connect_tmo(NULL,ms)) < 0) return fd;
 
-  if ((res = ei_write_fill_t(fd, buf, len+2, ms)) != len+2) {
-    closesocket(fd);
-    erl_errno = (res == -2) ? ETIMEDOUT : EIO;
-    return -1;
+  dlen = (ssize_t) len+2;
+  err = ei_write_fill_t__(fd, buf, &dlen, tmo);
+  if (!err && dlen != (ssize_t) len + 2)
+      erl_errno = EIO;
+  if (err) {
+      ei_close__(fd);
+      EI_CONN_SAVE_ERRNO__(err);
+      return -1;
   }
 
   EI_TRACE_CONN6("ei_epmd_r4_publish",
 		 "-> ALIVE2_REQ alive=%s port=%d ntype=%d "
 		 "proto=%d dist-high=%d dist-low=%d",
 		 alive,port,'H',EI_MYPROTO,EI_DIST_HIGH,EI_DIST_LOW);
-  
-  if ((n = ei_read_fill_t(fd, buf, 4, ms)) != 4) {
+
+  dlen = (ssize_t) 4;
+  err = ei_read_fill_t__(fd, buf, &dlen, tmo);
+  n = (int) dlen;
+  if (!err && n != 4)
+      err = EIO;
+  if (err) {
     EI_TRACE_ERR0("ei_epmd_r4_publish","<- CLOSE");
-    closesocket(fd);
-    erl_errno = (n == -2) ? ETIMEDOUT : EIO;
+    ei_close__(fd);
+    EI_CONN_SAVE_ERRNO__(err);
     return -2;			/* version mismatch */
   }
+
   /* Don't close fd here! It keeps us registered with epmd */
   s = buf;
-  if (((res=get8(s)) != EI_EPMD_ALIVE2_RESP)) {  /* response */
-    EI_TRACE_ERR1("ei_epmd_r4_publish","<- unknown (%d)",res);
+  response = get8(s);
+  if (response != EI_EPMD_ALIVE2_RESP &&
+      response != EI_EPMD_ALIVE2_X_RESP) {
+    EI_TRACE_ERR1("ei_epmd_r4_publish","<- unknown (%d)",response);
     EI_TRACE_ERR0("ei_epmd_r4_publish","-> CLOSE");
-    closesocket(fd);
+    ei_close__(fd);
     erl_errno = EIO;
     return -1;
   }
@@ -124,23 +139,26 @@ static int ei_epmd_r4_publish (int port, const char *alive, unsigned ms)
 
   if (((res=get8(s)) != 0)) {           /* 0 == success */
       EI_TRACE_ERR1("ei_epmd_r4_publish"," result=%d (fail)",res);
-    closesocket(fd);
+    ei_close__(fd);
     erl_errno = EIO;
     return -1;
   }
 
-  creation = get16be(s);
+  if (response == EI_EPMD_ALIVE2_RESP)
+      creation = get16be(s);
+  else /* EI_EPMD_ALIVE2_X_RESP */
+      creation = get32be(s);
 
   EI_TRACE_CONN2("ei_epmd_r4_publish",
-		 " result=%d (ok) creation=%d",res,creation);
-
-  /* probably should save fd so we can close it later... */
-  /* epmd_saveconn(OPEN,fd,alive); */
+		 " result=%d (ok) creation=%u",res,creation);
 
-  /* return the creation number, for no good reason */
-  /* return creation;*/
+  /*
+   * Would be nice to somehow use the nice "unique" creation value
+   * received here from epmd instead of using the crappy one
+   * passed (already) to ei_connect_init.
+   */
 
-  /* no - return the descriptor */
+  /* return the descriptor */
   return fd;
 }
 
diff --git a/lib/erl_interface/src/epmd/epmd_unpublish.c b/lib/erl_interface/src/epmd/epmd_unpublish.c
index 255d0ffb59..c112f74147 100644
--- a/lib/erl_interface/src/epmd/epmd_unpublish.c
+++ b/lib/erl_interface/src/epmd/epmd_unpublish.c
@@ -58,7 +58,9 @@ int ei_unpublish_tmo(const char *alive, unsigned ms)
     char buf[EPMDBUF];
     char *s = (char*)buf;
     int len = 1 + strlen(alive);
-    int fd, res;
+    int fd, err;
+    ssize_t dlen;
+    unsigned tmo = ms == 0 ? EI_SCLBK_INF_TMO : ms;
 
     if (len > sizeof(buf)-3) {
 	erl_errno = ERANGE;
@@ -72,20 +74,29 @@ int ei_unpublish_tmo(const char *alive, unsigned ms)
     /* FIXME can't connect, return success?! At least commen whats up */
     if ((fd = ei_epmd_connect_tmo(NULL,ms)) < 0) return fd;
 
-    if ((res = ei_write_fill_t(fd, buf, len+2,ms)) != len+2) {
-	closesocket(fd);
-	erl_errno = (res == -2) ? ETIMEDOUT : EIO;
-	return -1;
+    dlen = (ssize_t) len+2;
+    err = ei_write_fill_t__(fd, buf, &dlen, tmo);
+    if (!err && dlen != (ssize_t) len + 2)
+        erl_errno = EIO;
+    if (err) {
+        ei_close__(fd);
+        EI_CONN_SAVE_ERRNO__(err);
+        return -1;
     }
 
     EI_TRACE_CONN1("ei_unpublish_tmo","-> STOP %s",alive);
-  
-    if ((res = ei_read_fill_t(fd, buf, 7, ms)) != 7) {
-	closesocket(fd);
-	erl_errno = (res == -2) ? ETIMEDOUT : EIO;
-	return -1; 
+
+    dlen = (ssize_t) 7;
+    err = ei_read_fill_t__(fd, buf, &dlen, tmo);
+    if (!err && dlen != (ssize_t) 7)
+        erl_errno = EIO;
+    if (err) {
+        ei_close__(fd);
+        EI_CONN_SAVE_ERRNO__(err);
+        return -1;
     }
-    closesocket(fd);
+    
+    ei_close__(fd);
     buf[7]=(char)0;		/* terminate the string */
   
     if (!strcmp("STOPPED",(char *)buf)) {
diff --git a/lib/erl_interface/src/legacy/erl_connect.c b/lib/erl_interface/src/legacy/erl_connect.c
index 7ffd545d3e..e2fd4611c0 100644
--- a/lib/erl_interface/src/legacy/erl_connect.c
+++ b/lib/erl_interface/src/legacy/erl_connect.c
@@ -179,15 +179,13 @@ int erl_xconnect(Erl_IpAddr addr, char *alivename)
  *
  *  API: erl_close_connection()
  *
- *  Close a connection. FIXME call ei_close_connection() later. 
- *
  *  Returns 0 on success and -1 on failure.
  *
  ***************************************************************************/
 
 int erl_close_connection(int fd)
 {
-    return closesocket(fd);
+    return ei_close_connection(fd);
 }
 
 /*
@@ -220,7 +218,10 @@ int erl_reg_send(int fd, char *server_name, ETERM *msg)
     ei_x_buff x;
     int r;
 
-    ei_x_new_with_version(&x);
+    if (ei_x_new_with_version(&x) < 0) {
+        erl_errno = ENOMEM;
+        return 0;
+    }
     if (ei_x_encode_term(&x, msg) < 0) {
 	erl_errno = EINVAL;
 	r = 0;
diff --git a/lib/erl_interface/src/legacy/erl_eterm.c b/lib/erl_interface/src/legacy/erl_eterm.c
index 9ad92121f4..7ed2bdbc93 100644
--- a/lib/erl_interface/src/legacy/erl_eterm.c
+++ b/lib/erl_interface/src/legacy/erl_eterm.c
@@ -65,7 +65,7 @@ void erl_init(void *hp,long heap_size)
 {
     erl_init_malloc(hp, heap_size);
     erl_init_marshal();
-    ei_init_resolve();
+    (void) ei_init();
 }
 
 void erl_set_compat_rel(unsigned rel)
diff --git a/lib/erl_interface/src/misc/ei_init.c b/lib/erl_interface/src/misc/ei_init.c
new file mode 100644
index 0000000000..5357968657
--- /dev/null
+++ b/lib/erl_interface/src/misc/ei_init.c
@@ -0,0 +1,32 @@
+/*
+ * %CopyrightBegin%
+ * 
+ * Copyright Ericsson AB 2019. All Rights Reserved.
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * 
+ * %CopyrightEnd%
+ */
+
+#include "ei.h"
+#include "ei_resolve.h"
+#include "ei_internal.h"
+
+int
+ei_init(void)
+{
+    int error = ei_init_connect();
+    if (error)
+        return error;
+    return ei_init_resolve();
+}
diff --git a/lib/erl_interface/src/misc/ei_internal.h b/lib/erl_interface/src/misc/ei_internal.h
index aa6aacd703..f28dd6d668 100644
--- a/lib/erl_interface/src/misc/ei_internal.h
+++ b/lib/erl_interface/src/misc/ei_internal.h
@@ -22,19 +22,20 @@
 #ifndef _EI_INTERNAL_H
 #define _EI_INTERNAL_H
 
+#ifdef EI_HIDE_REAL_ERRNO
+#  define EI_CONN_SAVE_ERRNO__(E) \
+    ((E) == ETIMEDOUT ? (erl_errno = ETIMEDOUT) : (erl_errno = EIO))
+#else
+#  define EI_CONN_SAVE_ERRNO__(E) \
+    (erl_errno = (E))
+#endif
+
 /* 
  * Some useful stuff not to be exported to users.
  */
 
 #ifdef __WIN32__
 #define MAXPATHLEN 256
-#define writesocket(sock,buf,nbyte) send(sock,buf,nbyte,0)
-#define  readsocket(sock,buf,nbyte) recv(sock,buf,nbyte,0)
-#else /* not __WIN32__ */
-#define writesocket write
-#define readsocket  read
-#define closesocket close
-#define ioctlsocket ioctl
 #endif
 
 /* 
@@ -152,7 +153,12 @@
 
 extern int ei_tracelevel;
 
+int ei_init_connect(void);
+
 void ei_trace_printf(const char *name, int level, const char *format, ...);
 
 int ei_internal_use_r9_pids_ports(void);
+
+int ei_get_cbs_ctx__(ei_socket_callbacks **cbs, void **ctx, int fd);
+
 #endif /* _EI_INTERNAL_H */
diff --git a/lib/erl_interface/src/misc/ei_portio.c b/lib/erl_interface/src/misc/ei_portio.c
index 8cd35bf2e5..bccc86c1b1 100644
--- a/lib/erl_interface/src/misc/ei_portio.c
+++ b/lib/erl_interface/src/misc/ei_portio.c
@@ -19,9 +19,13 @@
  *
 
  */
+
+#include "eidef.h"
+
 #ifdef __WIN32__
 #include <winsock2.h>
 #include <windows.h>
+#include <winbase.h>
 #include <process.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -35,10 +39,6 @@ static unsigned long param_one = 1;
 #define SET_BLOCKING(Sock) ioctlsocket((Sock),FIONBIO,&param_zero)
 #define SET_NONBLOCKING(Sock) ioctlsocket((Sock),FIONBIO,&param_one)
 
-#define ERROR_WOULDBLOCK WSAEWOULDBLOCK
-#define ERROR_TIMEDOUT WSAETIMEDOUT 
-#define ERROR_INPROGRESS WSAEINPROGRESS
-#define GET_SOCKET_ERROR() WSAGetLastError()
 #define MEANS_SOCKET_ERROR(Ret) ((Ret == SOCKET_ERROR))
 #define IS_INVALID_SOCKET(Sock) ((Sock) == INVALID_SOCKET)
 
@@ -50,125 +50,414 @@ static unsigned long param_one = 1;
 #include <taskLib.h>
 #include <inetLib.h>
 #include <selectLib.h>
-#include <sys/types.h>
 #include <ioLib.h>
 #include <unistd.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h> 
+#include <timers.h>
 
 static unsigned long param_zero = 0;
 static unsigned long param_one = 1;
 #define SET_BLOCKING(Sock) ioctl((Sock),FIONBIO,(int)&param_zero)
 #define SET_NONBLOCKING(Sock) ioctl((Sock),FIONBIO,(int)&param_one)
-#define ERROR_WOULDBLOCK EWOULDBLOCK
-#define ERROR_TIMEDOUT ETIMEDOUT 
-#define ERROR_INPROGRESS EINPROGRESS
-#define GET_SOCKET_ERROR() (errno)
 #define MEANS_SOCKET_ERROR(Ret) ((Ret) == ERROR)
 #define IS_INVALID_SOCKET(Sock) ((Sock) < 0)
 
 #else /* other unix */
 #include <stdlib.h>
-#include <sys/types.h>
 #include <sys/socket.h>
-#include <sys/uio.h>
 #include <unistd.h>
 #include <fcntl.h>
 #include <errno.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h> 
+#include <arpa/inet.h>
+#include <netdb.h>
 
-#ifndef EWOULDBLOCK
-#define ERROR_WOULDBLOCK EAGAIN
-#else
-#define ERROR_WOULDBLOCK EWOULDBLOCK
-#endif
 #define SET_BLOCKING(fd)  fcntl((fd), F_SETFL, \
 				fcntl((fd), F_GETFL, 0) & ~O_NONBLOCK)
 #define SET_NONBLOCKING(fd) fcntl((fd), F_SETFL, \
 				  fcntl((fd), F_GETFL, 0) | O_NONBLOCK)
-#define ERROR_TIMEDOUT ETIMEDOUT 
-#define ERROR_INPROGRESS EINPROGRESS
-#define GET_SOCKET_ERROR() (errno)
 #define MEANS_SOCKET_ERROR(Ret) ((Ret) < 0)
 #define IS_INVALID_SOCKET(Sock) ((Sock) < 0)
 
 #endif
 
 /* common includes */
-#include "eidef.h"
 
+#include <sys/types.h>
 #include <stdio.h> 
 #include <stdlib.h>
 #include <string.h>
-#include "ei_portio.h"
-#include "ei_internal.h"
-
 #ifdef HAVE_SYS_TIME_H
 #include <sys/time.h>
 #else
 #include <time.h>
 #endif
+#ifdef HAVE_SYS_SELECT_H
+#include <sys/select.h>
+#endif
+#include "ei_portio.h"
+#include "ei_internal.h"
+
+#ifdef __WIN32__
 
-#ifdef HAVE_WRITEV
-static int ei_writev_t(int fd,  struct  iovec  *iov,  int iovcnt, unsigned ms)
+#define writesocket(sock,buf,nbyte) send(sock,buf,nbyte,0)
+#define readsocket(sock,buf,nbyte) recv(sock,buf,nbyte,0)
+
+static int get_error(void)
 {
-    int res;
-    if (ms != 0) {
-	fd_set writemask;
-	struct timeval tv;
-	tv.tv_sec = (time_t) (ms / 1000U);
-	ms %= 1000U;
-	tv.tv_usec = (time_t) (ms * 1000U);
-	FD_ZERO(&writemask);
-	FD_SET(fd,&writemask);
-	switch (select(fd+1, NULL, &writemask, NULL, &tv)) {
-	case -1 : 
-	    return -1; /* i/o error */
-	case 0:
-	    return -2; /* timeout */
-	default:
-	    if (!FD_ISSET(fd, &writemask)) {
-		return -1; /* Other error */
-	    }
-	}
+    switch (WSAGetLastError()) {
+    case WSAEWOULDBLOCK: return EWOULDBLOCK;
+    case WSAETIMEDOUT: return ETIMEDOUT;
+    case WSAEINPROGRESS: return EINPROGRESS;
+    case WSA_NOT_ENOUGH_MEMORY: return ENOMEM;
+    case WSA_INVALID_PARAMETER: return EINVAL;
+    case WSAEBADF: return EBADF;
+    case WSAEINVAL: return EINVAL;
+    case WSAEADDRINUSE: return EADDRINUSE;
+    case WSAENETUNREACH: return ENETUNREACH;
+    case WSAECONNABORTED: return ECONNABORTED;
+    case WSAECONNRESET: return ECONNRESET;
+    case WSAECONNREFUSED: return ECONNREFUSED;
+    case WSAEHOSTUNREACH: return EHOSTUNREACH;
+    case WSAEMFILE: return EMFILE;
+    case WSAEALREADY: return EALREADY;
+    default: return EIO;
     }
+}
+
+#else /* not __WIN32__ */
+
+#define writesocket write
+#define readsocket  read
+#define closesocket close
+#define ioctlsocket ioctl
+
+static int get_error(void)
+{
+    int err = errno;
+    if (err == 0)
+        return EIO; /* Make sure never to return 0 as error code... */
+    return err;
+}
+
+#endif
+
+int ei_plugin_socket_impl__ = 0;
+
+/*
+ * Callbacks for communication over TCP/IPv4
+ */
+
+static int tcp_get_fd(void *ctx, int *fd)
+{
+    return EI_DFLT_CTX_TO_FD__(ctx, fd);
+}
+
+static int tcp_hs_packet_header_size(void *ctx, int *sz)
+{
+    int fd;
+    *sz = 2;
+    return EI_DFLT_CTX_TO_FD__(ctx, &fd);
+}
+
+static int tcp_handshake_complete(void *ctx)
+{
+    int res, fd, one = 1;
+
+    res = EI_DFLT_CTX_TO_FD__(ctx, &fd);
+    if (res)
+        return res;
+
+    res = setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char *)&one, sizeof(one));
+    if (MEANS_SOCKET_ERROR(res))
+        return get_error();
+    
+    res = setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, (char *)&one, sizeof(one));
+    if (MEANS_SOCKET_ERROR(res))
+        return get_error();
+
+    return 0;
+}
+
+static int tcp_socket(void **ctx, void *setup_ctx)
+{
+    int fd = socket(AF_INET, SOCK_STREAM, 0);
+    if (MEANS_SOCKET_ERROR(fd))
+        return get_error();
+
+    *ctx = EI_FD_AS_CTX__(fd);
+    return 0;
+}
+
+static int tcp_close(void *ctx)
+{
+    int fd, res;
+
+    res = EI_DFLT_CTX_TO_FD__(ctx, &fd);
+    if (res)
+        return res;
+
+    res = closesocket(fd);
+    if (MEANS_SOCKET_ERROR(res))
+        return get_error();
+
+    return 0;
+}
+
+static int tcp_listen(void *ctx, void *addr, int *len, int backlog)
+{
+    int res, fd;
+    socklen_t sz = (socklen_t) *len;
+    int on = 1;
+
+    res = EI_DFLT_CTX_TO_FD__(ctx, &fd);
+    if (res)
+        return res;
+
+    res = setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char *) &on, sizeof(on));
+    if (MEANS_SOCKET_ERROR(res))
+        return get_error();
+
+    res = bind(fd, (struct sockaddr *) addr, sz);
+    if (MEANS_SOCKET_ERROR(res))
+        return get_error();
+
+    res = getsockname(fd, (struct sockaddr *) addr, (socklen_t *) &sz);
+    if (MEANS_SOCKET_ERROR(res))
+        return get_error();
+    *len = (int) sz;
+    
+    res = listen(fd, backlog);
+    if (MEANS_SOCKET_ERROR(res))
+        return get_error();
+
+    return 0;
+}
+
+static int tcp_accept(void **ctx, void *addr, int *len, unsigned unused)
+{
+    int fd, res;
+    socklen_t addr_len = (socklen_t) *len;
+
+    if (!ctx)
+        return EINVAL;
+
+    res = EI_DFLT_CTX_TO_FD__(*ctx, &fd);
+    if (res)
+        return res;
+    
+    res = accept(fd, (struct sockaddr*) addr, &addr_len);
+    if (MEANS_SOCKET_ERROR(res))
+        return get_error();
+
+    *len = (int) addr_len;
+
+    *ctx = EI_FD_AS_CTX__(res);
+    return 0;
+}
+
+static int tcp_connect(void *ctx, void *addr, int len, unsigned unused)
+{
+    int res, fd;
+
+    res = EI_DFLT_CTX_TO_FD__(ctx, &fd);
+    if (res)
+        return res;
+
+    res = connect(fd, (struct sockaddr *) addr, len);
+    if (MEANS_SOCKET_ERROR(res))
+        return get_error();
+    
+    return 0;
+}
+
+#if defined(EI_HAVE_STRUCT_IOVEC__) && defined(HAVE_WRITEV)
+
+static int tcp_writev(void *ctx, const void *viov, int iovcnt, ssize_t *len, unsigned unused)
+{
+    const struct iovec *iov = (const struct iovec *) viov;
+    int fd, error;
+    ssize_t res;
+
+    error = EI_DFLT_CTX_TO_FD__(ctx, &fd);
+    if (error)
+        return error;
+
     res = writev(fd, iov, iovcnt);
-    return (res < 0) ? -1 : res;
+    if (MEANS_SOCKET_ERROR(res))
+        return get_error();
+    *len = res;
+    return 0;
+}
+
+#endif
+
+static int tcp_write(void *ctx, const char* buf, ssize_t *len, unsigned unused)
+{
+    int error, fd;
+    ssize_t res;
+
+    error = EI_DFLT_CTX_TO_FD__(ctx, &fd);
+    if (error)
+        return error;
+
+    res = writesocket(fd, buf, *len);
+    if (MEANS_SOCKET_ERROR(res))
+        return get_error();
+    *len = res;
+    return 0;
+}
+
+static int tcp_read(void *ctx, char* buf, ssize_t *len, unsigned unused)
+{
+    int error, fd;
+    ssize_t res;
+
+    error = EI_DFLT_CTX_TO_FD__(ctx, &fd);
+    if (error)
+        return error;
+
+    res = readsocket(fd, buf, *len);
+    if (MEANS_SOCKET_ERROR(res))
+        return get_error();
+    *len = res;
+    return 0;
+}
+
+ei_socket_callbacks ei_default_socket_callbacks = {
+    0, /* flags */
+    tcp_socket,
+    tcp_close,
+    tcp_listen,
+    tcp_accept,
+    tcp_connect,
+#if defined(EI_HAVE_STRUCT_IOVEC__) && defined(HAVE_WRITEV)
+    tcp_writev,
+#else
+    NULL,
+#endif
+    tcp_write,
+    tcp_read,
+
+    tcp_hs_packet_header_size,
+    tcp_handshake_complete,
+    tcp_handshake_complete,
+    tcp_get_fd
+
+};
+
+
+/*
+ *
+ */
+
+#if defined(EI_HAVE_STRUCT_IOVEC__)
+
+int ei_socket_callbacks_have_writev__(ei_socket_callbacks *cbs)
+{
+    return !!cbs->writev;
 }
 
-int ei_writev_fill_t(int fd,  const  struct  iovec  *iov,  int iovcnt, unsigned ms)
+static int writev_ctx_t__(ei_socket_callbacks *cbs, void *ctx,
+                          const struct iovec *iov, int iovcnt,
+                          ssize_t *len,
+                          unsigned ms)
 {
-    int i;
-    int done;
+    int error;
+
+    if (!(cbs->flags & EI_SCLBK_FLG_FULL_IMPL) && ms != EI_SCLBK_INF_TMO) {
+        int fd;
+
+        error = EI_GET_FD__(cbs, ctx, &fd);
+        if (error)
+            return error;
+
+        do {
+            fd_set writemask;
+            struct timeval tv;
+            
+            tv.tv_sec = (time_t) (ms / 1000U);
+            ms %= 1000U;
+            tv.tv_usec = (time_t) (ms * 1000U);
+            FD_ZERO(&writemask);
+            FD_SET(fd,&writemask);
+            switch (select(fd+1, NULL, &writemask, NULL, &tv)) {
+            case -1 : 
+                error = get_error();
+                if (error != EINTR)
+                    return error;
+                break;
+            case 0:
+                return ETIMEDOUT; /* timeout */
+            default:
+                if (!FD_ISSET(fd, &writemask)) {
+                    return EIO; /* Other error */
+                }
+                error = 0;
+                break;
+            }
+        } while (error == EINTR);
+    }
+    do {
+        error = cbs->writev(ctx, (const void *) iov, iovcnt, len, ms);
+    } while (error == EINTR);
+    return error;
+}
+
+int ei_writev_fill_ctx_t__(ei_socket_callbacks *cbs, void *ctx,
+                           const struct iovec *iov, int iovcnt,
+                           ssize_t *len,
+                           unsigned ms)
+{
+    ssize_t i, done, sum;
     struct iovec *iov_base = NULL;
     struct iovec *current_iov;
     int current_iovcnt;
-    int sum;
+    int fd, error;
+    int basic;
+
+    if (!cbs->writev)
+        return ENOTSUP;
+    
+    error = EI_GET_FD__(cbs, ctx, &fd);
+    if (error)
+        return error;
 
+    basic = !(cbs->flags & EI_SCLBK_FLG_FULL_IMPL);
+    
     for (sum = 0, i = 0; i < iovcnt; ++i) {
 	sum += iov[i].iov_len;
     }
-    if (ms != 0U) {
+    if (basic && ms != 0U) {
 	SET_NONBLOCKING(fd);
     } 
     current_iovcnt = iovcnt;
     current_iov = (struct iovec *) iov;
     done = 0;
     for (;;) {
-	i = ei_writev_t(fd, current_iov, current_iovcnt, ms);
-	if (i <= 0) { /* ei_writev_t should always return at least 1 */ 
+        
+	error = writev_ctx_t__(cbs, ctx, current_iov, current_iovcnt, &i, ms);
+        if (error) {
+            *len = done;
 	    if (ms != 0U) {
 		SET_BLOCKING(fd);
 	    }    
 	    if (iov_base != NULL) {
 		free(iov_base);
 	    }
-	    return (i);
-	}
+	    return error;
+        }
 	done += i;
 
 	if (done < sum) {
 	    if (iov_base == NULL) {
 		iov_base = malloc(sizeof(struct iovec) * iovcnt);
 		if (iov_base == NULL) {
-		return -1;
+                    *len = done;
+                    return ENOMEM;
 		}
 		memcpy(iov_base, iov, sizeof(struct iovec) * iovcnt);
 		current_iov = iov_base;
@@ -189,195 +478,383 @@ int ei_writev_fill_t(int fd,  const  struct  iovec  *iov,  int iovcnt, unsigned
 	    break;
 	}
     } 
-    if (ms != 0U) {
+    if (basic && ms != 0U) {
 	SET_BLOCKING(fd);
     }
     if (iov_base != NULL) {
 	free(iov_base);
     }
-    return (sum);
+    *len = done;
+    return 0;
 }
 
+#endif /* defined(EI_HAVE_STRUCT_IOVEC__) */
 
-#endif
-
-int ei_connect_t(int fd, void *sinp, int sin_siz, unsigned ms)
+int ei_socket_ctx__(ei_socket_callbacks *cbs, void **ctx, void *setup_ctx)
 {
     int res;
-    int error;
-    int s_res;
-    struct timeval tv;
-    fd_set writefds;
-    fd_set exceptfds;
-
-    if (ms == 0) {
-	res = connect(fd, sinp, sin_siz);
-	return (res < 0) ? -1 : res;
-    } else {
-	SET_NONBLOCKING(fd);
-	res = connect(fd, sinp, sin_siz);
-	error = GET_SOCKET_ERROR();
-	SET_BLOCKING(fd);
-	if (!MEANS_SOCKET_ERROR(res)) {
-	    return (res < 0) ? -1 : res;
-	} else {
-	    if (error != ERROR_WOULDBLOCK && 
-		error != ERROR_INPROGRESS) {
-		return -1;
-	    } else {
-		tv.tv_sec = (long) (ms/1000U);
-		ms %= 1000U;
-		tv.tv_usec = (long) (ms * 1000U);
-		FD_ZERO(&writefds);
-		FD_SET(fd,&writefds);
-		FD_ZERO(&exceptfds);
-		FD_SET(fd,&exceptfds);
-		s_res = select(fd + 1, NULL, &writefds, &exceptfds, &tv);
-		switch (s_res) {
-		case 0:
-		    return -2;
-		case 1:
-		    if (FD_ISSET(fd, &exceptfds)) {
-			return  -1;
-		    } else {
-			return 0; /* Connect completed */
-		    }
-		default:
-		    return -1;
-		}
-	    }
-	} 
-    }
+
+    do {
+        res = cbs->socket(ctx, setup_ctx);
+    } while (res == EINTR);
+
+    return res;
 }
 
-int ei_accept_t(int fd, void  *addr,   void  *addrlen, unsigned ms)
+int ei_close_ctx__(ei_socket_callbacks *cbs, void *ctx)
 {
-    int res;
-    if (ms != 0) {
-	fd_set readmask;
-	struct timeval tv;
-	tv.tv_sec = (time_t) (ms / 1000U);
-	ms %= 1000U;
-	tv.tv_usec = (time_t) (ms * 1000U);
-	FD_ZERO(&readmask);
-	FD_SET(fd,&readmask);
-	switch (select(fd+1, &readmask, NULL, NULL, &tv)) {
-	case -1 : 
-	    return -1; /* i/o error */
-	case 0:
-	    return -2; /* timeout */
-	default:
-	    if (!FD_ISSET(fd, &readmask)) {
-		return -1; /* Other error */
-	    }
-	}
-    }
-    res = (int) accept(fd,addr,addrlen);
-    return (res < 0) ? -1 : res;
+    return cbs->close(ctx);
 }
+
+int ei_connect_ctx_t__(ei_socket_callbacks *cbs, void *ctx,
+                       void *addr, int len, unsigned ms)
+{
+    int res, fd;
+
+    if ((cbs->flags & EI_SCLBK_FLG_FULL_IMPL) || ms == EI_SCLBK_INF_TMO) {
+        do {
+            res = cbs->connect(ctx, addr, len, ms);
+        } while (res == EINTR);
+        return res;
+    }
+
+    res = EI_GET_FD__(cbs, ctx, &fd);
+    if (res)
+        return res;
     
+    SET_NONBLOCKING(fd);
+    do {
+        res = cbs->connect(ctx, addr, len, 0);
+    } while (res == EINTR);
+    SET_BLOCKING(fd);
 
+    switch (res) {
+    case EINPROGRESS:
+    case EAGAIN:
+#ifdef EWOULDBLOCK
+#if EWOULDBLOCK != EAGAIN
+    case EWOULDBLOCK:
+#endif
+#endif
+        break;
+    default:
+        return res;
+    }
 
-static int ei_read_t(int fd, char* buf, int len, unsigned  ms)
+    while (1) {
+        struct timeval tv;
+        fd_set writefds;
+        fd_set exceptfds;
+        
+        tv.tv_sec = (long) (ms/1000U);
+        ms %= 1000U;
+        tv.tv_usec = (long) (ms * 1000U);
+        FD_ZERO(&writefds);
+        FD_SET(fd,&writefds);
+        FD_ZERO(&exceptfds);
+        FD_SET(fd,&exceptfds);
+        res = select(fd + 1, NULL, &writefds, &exceptfds, &tv);
+        switch (res) {
+        case -1:
+            res = get_error();
+            if (res != EINTR)
+                return res;
+            break;
+        case 0:
+            return ETIMEDOUT;
+        case 1:
+            if (!FD_ISSET(fd, &exceptfds))
+                return 0; /* Connect completed */
+            /* fall through... */
+        default:
+            return EIO;
+        }
+    }
+}
+
+int ei_listen_ctx__(ei_socket_callbacks *cbs, void *ctx,
+                    void *adr, int *len, int backlog)
 {
     int res;
-    if (ms != 0) {
-	fd_set readmask;
-	struct timeval tv;
-	tv.tv_sec = (time_t) (ms / 1000U);
-	ms %= 1000U;
-	tv.tv_usec = (time_t) (ms * 1000U);
-	FD_ZERO(&readmask);
-	FD_SET(fd,&readmask);
-	switch (select(fd+1, &readmask, NULL, NULL, &tv)) {
-	case -1 : 
-	    return -1; /* i/o error */
-	case 0:
-	    return -2; /* timeout */
-	default:
-	    if (!FD_ISSET(fd, &readmask)) {
-		return -1; /* Other error */
-	    }
-	}
+
+    do {
+        res = cbs->listen(ctx, adr, len, backlog);
+    } while (res == EINTR);
+    return res;
+}
+
+int ei_accept_ctx_t__(ei_socket_callbacks *cbs, void **ctx,
+                      void *addr, int *len, unsigned ms)
+{
+    int error;
+
+    if (!(cbs->flags & EI_SCLBK_FLG_FULL_IMPL) && ms != EI_SCLBK_INF_TMO) {
+        int fd;
+
+        error = EI_GET_FD__(cbs, *ctx, &fd);
+        if (error)
+            return error;
+
+        do {
+            fd_set readmask;
+            struct timeval tv;
+            
+            tv.tv_sec = (time_t) (ms / 1000U);
+            ms %= 1000U;
+            tv.tv_usec = (time_t) (ms * 1000U);
+            FD_ZERO(&readmask);
+            FD_SET(fd,&readmask);
+            switch (select(fd+1, &readmask, NULL, NULL, &tv)) {
+            case -1 : 
+                error = get_error();
+                if (error != EINTR)
+                    return error;
+                break;
+            case 0:
+                return ETIMEDOUT; /* timeout */
+            default:
+                if (!FD_ISSET(fd, &readmask)) {
+                    return EIO; /* Other error */
+                }
+                error = 0;
+                break;
+            }
+        } while (error == EINTR);
     }
-    res = readsocket(fd, buf, len);
-    return (res < 0) ? -1 : res;
+    do {
+        error = cbs->accept(ctx, addr, len, ms);
+    } while (error == EINTR);
+    return error;
 }
 
-static int ei_write_t(int fd, const char* buf, int len, unsigned  ms)
+static int read_ctx_t__(ei_socket_callbacks *cbs, void *ctx,
+                        char* buf, ssize_t *len, unsigned  ms)
 {
-    int res;
-    if (ms != 0) {
-	fd_set writemask;
-	struct timeval tv;
-	tv.tv_sec = (time_t) (ms / 1000U);
-	ms %= 1000U;
-	tv.tv_usec = (time_t) (ms * 1000U);
-	FD_ZERO(&writemask);
-	FD_SET(fd,&writemask);
-	switch (select(fd+1, NULL, &writemask, NULL, &tv)) {
-	case -1 : 
-	    return -1; /* i/o error */
-	case 0:
-	    return -2; /* timeout */
-	default:
-	    if (!FD_ISSET(fd, &writemask)) {
-		return -1; /* Other error */
-	    }
-	}
+    int error;
+
+    if (!(cbs->flags & EI_SCLBK_FLG_FULL_IMPL) && ms != EI_SCLBK_INF_TMO) {
+        int fd;
+
+        error = EI_GET_FD__(cbs, ctx, &fd);
+        if (error)
+            return error;
+        
+        do {
+            fd_set readmask;
+            struct timeval tv;
+            
+            tv.tv_sec = (time_t) (ms / 1000U);
+            ms %= 1000U;
+            tv.tv_usec = (time_t) (ms * 1000U);
+            FD_ZERO(&readmask);
+            FD_SET(fd,&readmask);
+            switch (select(fd+1, &readmask, NULL, NULL, &tv)) {
+            case -1 :
+                error = get_error();
+                if (error != EINTR)
+                    return error;
+                break;
+            case 0:
+                return ETIMEDOUT; /* timeout */
+            default:
+                if (!FD_ISSET(fd, &readmask)) {
+                    return EIO; /* Other error */
+                }
+                error = 0;
+                break;
+            }
+        } while (error == EINTR);
+    }
+    do {
+        error = cbs->read(ctx, buf, len, ms);
+    } while (error == EINTR);
+    return error;
+}
+
+static int write_ctx_t__(ei_socket_callbacks *cbs, void *ctx, const char* buf, ssize_t *len, unsigned  ms)
+{
+    int error;
+    
+    if (!(cbs->flags & EI_SCLBK_FLG_FULL_IMPL) && ms != EI_SCLBK_INF_TMO) {
+        int fd;
+
+        error = EI_GET_FD__(cbs, ctx, &fd);
+        if (error)
+            return error;
+
+        do {
+            fd_set writemask;
+            struct timeval tv;
+            
+            tv.tv_sec = (time_t) (ms / 1000U);
+            ms %= 1000U;
+            tv.tv_usec = (time_t) (ms * 1000U);
+            FD_ZERO(&writemask);
+            FD_SET(fd,&writemask);
+            switch (select(fd+1, NULL, &writemask, NULL, &tv)) {
+            case -1 : 
+                error = get_error();
+                if (error != EINTR)
+                    return error;
+                break;
+            case 0:
+                return ETIMEDOUT; /* timeout */
+            default:
+                if (!FD_ISSET(fd, &writemask)) {
+                    return EIO; /* Other error */
+                }
+                error = 0;
+                break;
+            }
+        } while (error == EINTR);
     }
-    res =  writesocket(fd, buf, len);
-    return (res < 0) ? -1 : res;
+    do {
+        error = cbs->write(ctx, buf, len, ms);
+    } while (error == EINTR);
+    return error;
 }
 	
 /* 
  * Fill buffer, return buffer length, 0 for EOF, < 0 (and sets errno)
  * for error.  */
-int ei_read_fill_t(int fd, char* buf, int len, unsigned  ms)
+int ei_read_fill_ctx_t__(ei_socket_callbacks *cbs, void *ctx, char* buf, ssize_t *len, unsigned  ms)
 {
-    int i,got=0;
+    ssize_t got = 0;
+    ssize_t want = *len;
 
     do {
-	i = ei_read_t(fd, buf+got, len-got, ms);
-	if (i <= 0)
-	    return (i);
-	got += i;
-    } while (got < len);
-    return (len);
-    
+        ssize_t read_len = want-got;
+        int error;
+
+        do {
+            error = read_ctx_t__(cbs, ctx, buf+got, &read_len, ms);
+        } while (error == EINTR);
+        if (error)
+            return error;
+        if (read_len == 0) {
+            *len = got;
+            return 0;
+        }
+	got += read_len;
+    } while (got < want);
+
+    *len = got;
+    return 0;
 } /* read_fill */
 
-int ei_read_fill(int fd, char* buf, int len)
+int ei_read_fill_ctx__(ei_socket_callbacks *cbs, void *ctx, char* buf, ssize_t *len)
 {
-    return ei_read_fill_t(fd, buf, len, 0);
+    return ei_read_fill_ctx_t__(cbs, ctx, buf, len, 0);
 }
 
 /* write entire buffer on fd  or fail (setting errno)
  */
-int ei_write_fill_t(int fd, const char *buf, int len, unsigned ms)
+int ei_write_fill_ctx_t__(ei_socket_callbacks *cbs, void *ctx, const char *buf, ssize_t *len, unsigned ms)
 {
-    int i,done=0;
-    if (ms != 0U) {
+    ssize_t tot = *len, done = 0;
+    int error, fd = -1, basic = !(cbs->flags & EI_SCLBK_FLG_FULL_IMPL);
+    
+    if (basic && ms != 0U) {
+        error = EI_GET_FD__(cbs, ctx, &fd);
+        if (error)
+            return error;
 	SET_NONBLOCKING(fd);
     }    
     do {
-	i = ei_write_t(fd, buf+done, len-done, ms);
-	if (i <= 0) {
-	    if (ms != 0U) {
+        ssize_t write_len = tot-done;
+	error = write_ctx_t__(cbs, ctx, buf+done, &write_len, ms);
+        if (error) {
+            *len = done;
+	    if (basic && ms != 0U) {
 		SET_BLOCKING(fd);
 	    }    
-	    return (i);
+	    return error;
 	}
-	done += i;
-    } while (done < len);
-    if (ms != 0U) {
+	done += write_len;
+    } while (done < tot);
+    if (basic && ms != 0U) {
 	SET_BLOCKING(fd);
     }
-    return (len);
+    *len = done;
+    return 0;
+}
+
+int ei_write_fill_ctx__(ei_socket_callbacks *cbs, void *ctx, const char *buf, ssize_t *len) 
+{
+    return ei_write_fill_ctx_t__(cbs, ctx, buf, len, 0);
+}
+
+/*
+ * Internal API for TCP/IPv4
+ */
+
+int ei_connect_t__(int fd, void *addr, int len, unsigned ms)
+{
+    return ei_connect_ctx_t__(&ei_default_socket_callbacks, EI_FD_AS_CTX__(fd),
+                              addr, len, ms);
 }
 
-int ei_write_fill(int fd, const char *buf, int len) 
+int ei_socket__(int *fd)
 {
-    return ei_write_fill_t(fd, buf, len, 0);
+    void *ctx;
+    int error = ei_socket_ctx__(&ei_default_socket_callbacks, &ctx, NULL);
+    if (error)
+        return error;
+    return EI_GET_FD__(&ei_default_socket_callbacks, ctx, fd);
 }
 
+int ei_close__(int fd)
+{
+    return ei_close_ctx__(&ei_default_socket_callbacks, EI_FD_AS_CTX__(fd));
+}
+
+int ei_listen__(int fd, void *adr, int *len, int backlog)
+{
+    return ei_listen_ctx__(&ei_default_socket_callbacks, EI_FD_AS_CTX__(fd),
+                           adr, len, backlog);
+}
+
+int ei_accept_t__(int *fd, void *addr, int *len, unsigned ms)
+{
+    void *ctx = EI_FD_AS_CTX__(*fd);
+    int error = ei_accept_ctx_t__(&ei_default_socket_callbacks, &ctx,
+                                  addr, len, ms);
+    if (error)
+        return error;
+    return EI_GET_FD__(&ei_default_socket_callbacks, ctx, fd);
+}
+
+int ei_read_fill_t__(int fd, char* buf, ssize_t *len, unsigned  ms)
+{
+    return ei_read_fill_ctx_t__(&ei_default_socket_callbacks, EI_FD_AS_CTX__(fd),
+                                buf, len, ms);
+}
+
+int ei_read_fill__(int fd, char* buf, ssize_t *len)
+{
+    return ei_read_fill_ctx_t__(&ei_default_socket_callbacks, EI_FD_AS_CTX__(fd),
+                                buf, len, 0);
+}
+
+int ei_write_fill_t__(int fd, const char *buf, ssize_t *len, unsigned ms)
+{
+    return ei_write_fill_ctx_t__(&ei_default_socket_callbacks, EI_FD_AS_CTX__(fd),
+                                 buf, len, ms);
+}
+
+int ei_write_fill__(int fd, const char *buf, ssize_t *len) 
+{
+    return ei_write_fill_ctx_t__(&ei_default_socket_callbacks, EI_FD_AS_CTX__(fd),
+                                 buf, len, 0);
+}
+
+#if defined(EI_HAVE_STRUCT_IOVEC__) && defined(HAVE_WRITEV)
+
+int ei_writev_fill_t__(int fd, const struct iovec  *iov,  int iovcnt, ssize_t *len, unsigned ms)
+{
+    return ei_writev_fill_ctx_t__(&ei_default_socket_callbacks, EI_FD_AS_CTX__(fd),
+                                  iov, iovcnt, len, ms);
+}
+
+#endif
+
diff --git a/lib/erl_interface/src/misc/ei_portio.h b/lib/erl_interface/src/misc/ei_portio.h
index bded811a35..a84b5ca09c 100644
--- a/lib/erl_interface/src/misc/ei_portio.h
+++ b/lib/erl_interface/src/misc/ei_portio.h
@@ -21,21 +21,94 @@
  */
 #ifndef _EI_PORTIO_H
 #define _EI_PORTIO_H
-#if !defined(__WIN32__) && !defined(VXWORKS)
-#ifdef HAVE_WRITEV
+
+#undef EI_HAVE_STRUCT_IOVEC__
+#if !defined(__WIN32__) && !defined(VXWORKS) && defined(HAVE_SYS_UIO_H)
 /* Declaration of struct iovec *iov should be visible in this scope. */
-#include <sys/uio.h>
+#  include <sys/uio.h>
+#  define EI_HAVE_STRUCT_IOVEC__
 #endif
+
+/*
+ * Internal API. Should not be used outside of the erl_interface application...
+ */
+
+int ei_socket_ctx__(ei_socket_callbacks *cbs, void **ctx, void *setup);
+int ei_close_ctx__(ei_socket_callbacks *cbs, void *ctx);
+int ei_listen_ctx__(ei_socket_callbacks *cbs, void *ctx, void *adr, int *len, int backlog);
+int ei_accept_ctx_t__(ei_socket_callbacks *cbs, void **ctx, void *addr, int *len, unsigned ms);
+int ei_connect_ctx_t__(ei_socket_callbacks *cbs, void *ctx, void *addr, int len, unsigned ms);
+int ei_read_fill_ctx__(ei_socket_callbacks *cbs, void *ctx, char* buf, ssize_t *len);
+int ei_write_fill_ctx__(ei_socket_callbacks *cbs, void *ctx, const char *buf, ssize_t *len);
+int ei_read_fill_ctx_t__(ei_socket_callbacks *cbs, void *ctx, char* buf, ssize_t *len, unsigned  ms);
+int ei_write_fill_ctx_t__(ei_socket_callbacks *cbs, void *ctx, const char *buf, ssize_t *len, unsigned ms);
+#if defined(EI_HAVE_STRUCT_IOVEC__)
+int ei_writev_fill_ctx_t__(ei_socket_callbacks *cbs, void *ctx, const struct iovec *iov, int iovcnt, ssize_t *len, unsigned ms);
+int ei_socket_callbacks_have_writev__(ei_socket_callbacks *cbs);
 #endif
 
-int ei_accept_t(int fd, void   *addr,   void  *addrlen, unsigned ms);
-int ei_connect_t(int fd, void *sinp, int sin_siz, unsigned ms);
-int ei_read_fill(int fd, char* buf, int len);
-int ei_write_fill(int fd, const char *buf, int len);
-int ei_read_fill_t(int fd, char* buf, int len, unsigned ms);
-int ei_write_fill_t(int fd, const char *buf, int len, unsigned ms);
-#ifdef HAVE_WRITEV
-int ei_writev_fill_t(int fd,  const  struct  iovec  *iov,  int iovcnt, unsigned ms);
+ei_socket_callbacks ei_default_socket_callbacks;
+
+#define EI_FD_AS_CTX__(FD)                                              \
+    ((void *) (long) (FD))
+
+#define EI_DFLT_CTX_TO_FD__(CTX, FD)                                    \
+    ((int) (long) (CTX) < 0                                             \
+     ? EBADF                                                            \
+     : (*(FD) = (int) (long) (CTX), 0))
+
+#define EI_GET_FD__(CBS, CTX, FD)                                       \
+    ((CBS) == &ei_default_socket_callbacks                              \
+     ? EI_DFLT_CTX_TO_FD__((CTX), FD)                                   \
+     : (CBS)->get_fd((CTX), (FD)))
+
+extern int ei_plugin_socket_impl__;
+
+#if !defined(_REENTRANT)
+
+#define EI_HAVE_PLUGIN_SOCKET_IMPL__                                    \
+    ei_plugin_socket_impl__
+#define EI_SET_HAVE_PLUGIN_SOCKET_IMPL__                                \
+    ei_plugin_socket_impl__ = 1
+
+#elif ((ETHR_HAVE___atomic_load_n & SIZEOF_INT)                         \
+       && (ETHR_HAVE___atomic_store_n & SIZEOF_INT))
+
+#define EI_HAVE_PLUGIN_SOCKET_IMPL__                                    \
+    __atomic_load_n(&ei_plugin_socket_impl__, __ATOMIC_ACQUIRE)
+#define EI_SET_HAVE_PLUGIN_SOCKET_IMPL__                                \
+    __atomic_store_n(&ei_plugin_socket_impl__, 1, __ATOMIC_RELEASE)
+
+#else
+
+/* No gcc atomics; always lookup using ei_get_cbs_ctx()... */
+#define EI_HAVE_PLUGIN_SOCKET_IMPL__ 0
+#define EI_SET_HAVE_PLUGIN_SOCKET_IMPL__ (void) 0
+
+#endif
+
+#define EI_GET_CBS_CTX__(CBS, CTX, FD)                                  \
+    (EI_HAVE_PLUGIN_SOCKET_IMPL__                                       \
+     ? ei_get_cbs_ctx__((CBS), (CTX), (FD))                             \
+     : ((FD) < 0                                                        \
+        ? EBADF                                                         \
+        : (*(CBS) = &ei_default_socket_callbacks,                       \
+           *(CTX) = EI_FD_AS_CTX__((FD)),                               \
+           0)))
+/*      
+ * The following uses our own TCP/IPv4 socket implementation...
+ */
+int ei_socket__(int *fd);
+int ei_close__(int fd);
+int ei_listen__(int fd, void *adr, int *len, int backlog);
+int ei_accept_t__(int *fd, void *addr, int *len, unsigned ms);
+int ei_connect_t__(int fd, void *addr, int len, unsigned ms);
+int ei_read_fill__(int fd, char* buf, ssize_t *len);
+int ei_write_fill__(int fd, const char *buf, ssize_t *len);
+int ei_read_fill_t__(int fd, char* buf, ssize_t *len, unsigned ms);
+int ei_write_fill_t__(int fd, const char *buf, ssize_t *len, unsigned ms);
+#if defined(EI_HAVE_STRUCT_IOVEC__) && defined(HAVE_WRITEV)
+int ei_writev_fill_t__(int fd, const struct iovec *iov, int iovcnt, ssize_t *len, unsigned ms);
 #endif
 
 #endif /* _EI_PORTIO_H */
diff --git a/lib/erl_interface/src/misc/ei_pthreads.c b/lib/erl_interface/src/misc/ei_pthreads.c
index ec1c8d956f..c6d07a9a0a 100644
--- a/lib/erl_interface/src/misc/ei_pthreads.c
+++ b/lib/erl_interface/src/misc/ei_pthreads.c
@@ -78,7 +78,7 @@ static void tls_init_once(void)
 	errno_tls_index = TlsAlloc();
 	if (errno_tls_index == TLS_OUT_OF_INDEXES) {
 	    fprintf(stderr, 
-		    "FATAL ERROR: can not allocate TLS index for "
+		    "FATAL ERROR: cannot allocate TLS index for "
 		    "erl_errno (error code = %d)!\n",GetLastError());
 	    exit(1);
 	}
diff --git a/lib/erl_interface/src/not_used/send_link.c b/lib/erl_interface/src/not_used/send_link.c
index 7be476fd93..38fae27df4 100644
--- a/lib/erl_interface/src/not_used/send_link.c
+++ b/lib/erl_interface/src/not_used/send_link.c
@@ -50,6 +50,7 @@ static int link_unlink(int fd, const erlang_pid *from, const erlang_pid *to,
   char *s;
   int index = 0;
   int n;
+  unsigned tmo = ms == 0 ? EI_SCLBK_INF_TMO : ms;
 
   index = 5;                                     /* max sizes: */
   ei_encode_version(msgbuf,&index);                     /*   1 */
@@ -69,7 +70,7 @@ static int link_unlink(int fd, const erlang_pid *from, const erlang_pid *to,
   if (ei_trace_distribution > 1) ei_show_sendmsg(stderr,msgbuf,NULL);
 #endif
 
-  n = ei_write_fill_t(fd,msgbuf,index,ms); 
+  n = ei_write_fill_t__(fd,msgbuf,index,tmo); 
 
   return (n==index ? 0 : -1);
 }
diff --git a/lib/erl_interface/src/prog/ei_fake_prog.c b/lib/erl_interface/src/prog/ei_fake_prog.c
index c7a16dc7c4..158464b385 100644
--- a/lib/erl_interface/src/prog/ei_fake_prog.c
+++ b/lib/erl_interface/src/prog/ei_fake_prog.c
@@ -98,11 +98,18 @@ int main(void)
   EI_ULONGLONG ulonglongx = 0;
 #endif
   erlang_char_encoding enc;
+  ei_socket_callbacks cbs;
 
   intx = erl_errno;
 
+  ei_init();
+
+  ei_close_connection(intx);
+  
   ei_connect_init(&xec, charp, charp, creation);
+  ei_connect_init_ussi(&xec, charp, charp, creation, &cbs, sizeof(cbs), NULL);
   ei_connect_xinit (&xec, charp, charp, charp, thisipaddr, charp, creation);
+  ei_connect_xinit_ussi(&xec, charp, charp, charp, thisipaddr, charp, creation, &cbs, sizeof(cbs), NULL);
 
   ei_connect(&xec, charp);
   ei_xconnect (&xec, thisipaddr, charp);
@@ -121,6 +128,8 @@ int main(void)
   ei_publish(&xec, intx);
   ei_accept(&xec, intx, &conp);
   ei_unpublish(&xec);
+  ei_listen(&xec, intp, intx);
+  ei_xlisten(&xec, thisipaddr, intp, intx);
 
   ei_thisnodename(&xec);
   ei_thishostname(&xec);
@@ -187,7 +196,7 @@ int main(void)
   ei_decode_char(charp, intp, charp);
   ei_decode_string(charp, intp, charp);
   ei_decode_atom(charp, intp, charp);
-  ei_decode_atom_as(charp, intp, charp, MAXATOMLEN_UTF8, ERLANG_WHATEVER, &enc, &enc);
+  ei_decode_atom_as(charp, intp, charp, MAXATOMLEN_UTF8, ERLANG_UTF8, &enc, &enc);
   ei_decode_binary(charp, intp, (void *)0, longp);
   ei_decode_fun(charp, intp, &efun);
   free_fun(&efun);
diff --git a/lib/erl_interface/src/prog/erl_call.c b/lib/erl_interface/src/prog/erl_call.c
index 52ad6885e8..dce2ecdec2 100644
--- a/lib/erl_interface/src/prog/erl_call.c
+++ b/lib/erl_interface/src/prog/erl_call.c
@@ -88,10 +88,6 @@
 #include "ei_resolve.h"
 #include "erl_start.h"		/* FIXME remove dependency */
 
-#ifdef __WIN32__
-static void initWinSock(void);
-#endif
-
 /*
  * Some nice global variables
  * (I don't think "nice" is the right word actually... -gordon)
@@ -157,6 +153,8 @@ int erl_call(int argc, char **argv)
     char* progname = argv[0];
     ei_cnode ec;
 
+    ei_init();
+
     /* Get the command line options */
     while (i < argc) {
 	if (argv[i][0] != '-') {
@@ -294,8 +292,7 @@ int erl_call(int argc, char **argv)
 	flags.cookie = NULL;
     }
 
-    /* FIXME decide how many bits etc or leave to connect_xinit? */
-    creation = (time(NULL) % 3) + 1; /* "random" */
+    creation = time(NULL) + 1; /* "random" */
 
     if (flags.hidden == NULL) {
       /* As default we are c17@gethostname */
@@ -317,14 +314,6 @@ int erl_call(int argc, char **argv)
       struct in_addr h_ipadr;
       char* ct;
 
-#ifdef __WIN32__
-      /*
-       * FIXME Extremly ugly, but needed to get ei_gethostbyname() below
-       * to work.
-       */
-      initWinSock();
-#endif
-
       /* gethostname requires len to be max(hostname) + 1 */
       if (gethostname(h_hostname, EI_MAXHOSTNAMELEN+1) < 0) {
 	  fprintf(stderr,"erl_call: failed to get host name: %d\n", errno);
@@ -857,46 +846,6 @@ static void usage(const char *progname) {
   exit(0);
 }
 
-
-/***************************************************************************
- *
- *  OS specific functions
- *
- ***************************************************************************/
-
-#ifdef __WIN32__
-/*
- * FIXME This should not be here.  This is a quick fix to make erl_call
- * work at all on Windows NT.
- */
-static void initWinSock(void)
-{
-    WORD wVersionRequested;  
-    WSADATA wsaData; 
-    int err; 
-    static int initialized;
-
-    wVersionRequested = MAKEWORD(1, 1); 
-    if (!initialized) {
-	initialized = 1;
-	err = WSAStartup(wVersionRequested, &wsaData); 
- 
-	if (err != 0) {
-	    fprintf(stderr,"erl_call: "
-		    "Can't initialize windows sockets: %d\n", err);
-	}
-  
-	if ( LOBYTE( wsaData.wVersion ) != 1 || 
-	    HIBYTE( wsaData.wVersion ) != 1 ) { 
-	    fprintf(stderr,"erl_call: This version of "
-		    "windows sockets not supported\n");
-	    WSACleanup(); 
-	}
-    }
-}
-#endif
-
-
 /***************************************************************************
  *
  *  Utility functions
diff --git a/lib/erl_interface/src/prog/erl_start.c b/lib/erl_interface/src/prog/erl_start.c
index 670a5900c9..b7aa451946 100644
--- a/lib/erl_interface/src/prog/erl_start.c
+++ b/lib/erl_interface/src/prog/erl_start.c
@@ -97,7 +97,7 @@
 #endif
 
 #ifndef RSH
-#define RSH "/usr/bin/rsh"
+#define RSH "/usr/bin/ssh"
 #endif
 
 #ifndef HAVE_SOCKLEN_T
@@ -657,7 +657,7 @@ static int wait_for_erlang(int sockd, int magic, struct timeval *timeout)
     gettimeofday(&now,NULL);
     to.tv_sec = stop_time.tv_sec - now.tv_sec;
     to.tv_usec = stop_time.tv_usec - now.tv_usec;
-    while ((to.tv_usec <= 0) && (to.tv_sec >= 0)) {
+    while ((to.tv_usec < 0) && (to.tv_sec > 0)) {
       to.tv_usec += 1000000;
       to.tv_sec--;
     }
diff --git a/lib/erl_interface/test/Makefile b/lib/erl_interface/test/Makefile
index 94f4b422d6..f8f2ef0156 100644
--- a/lib/erl_interface/test/Makefile
+++ b/lib/erl_interface/test/Makefile
@@ -33,6 +33,7 @@ MODULES= \
 	ei_format_SUITE \
 	ei_print_SUITE \
 	ei_tmo_SUITE \
+	erl_call_SUITE \
 	erl_connect_SUITE \
 	erl_global_SUITE \
 	erl_eterm_SUITE \
diff --git a/lib/erl_interface/test/ei_accept_SUITE.erl b/lib/erl_interface/test/ei_accept_SUITE.erl
index 78a433d21b..9c9c3f86b6 100644
--- a/lib/erl_interface/test/ei_accept_SUITE.erl
+++ b/lib/erl_interface/test/ei_accept_SUITE.erl
@@ -81,12 +81,10 @@ ei_accept(Config) when is_list(Config) ->
 
 ei_threaded_accept(Config) when is_list(Config) ->
     Einode = filename:join(proplists:get_value(data_dir, Config), "eiaccnode"),
-    N = 1, % 3,
+    N = 3,
     Host = atom_to_list(node()),
-    Port = 6767,
-    start_einode(Einode, N, Host, Port),
+    start_einode(Einode, N, Host),
     io:format("started eiaccnode"),
-    %%spawn_link(fun() -> start_einode(Einode, N, Host, Port) end),
     TestServerPid = self(),
     [spawn_link(fun() -> send_rec_einode(I, TestServerPid) end) || I <- lists:seq(0, N-1)],
     [receive I -> ok end || I <- lists:seq(0, N-1) ],
@@ -159,10 +157,9 @@ send_rec_einode(N, TestServerPid) ->
               ct:fail(EINode)
     end.
 
-start_einode(Einode, N, Host, Port) ->
+start_einode(Einode, N, Host) ->
     Einodecmd = Einode ++ " " ++ atom_to_list(erlang:get_cookie())
-    ++ " " ++ integer_to_list(N) ++ " " ++ Host ++ " "
-    ++ integer_to_list(Port) ++ " nothreads",
+    ++ " " ++ integer_to_list(N) ++ " " ++ Host,
     io:format("Einodecmd  ~p ~n", [Einodecmd]),      
     open_port({spawn, Einodecmd}, []),
     ok.
diff --git a/lib/erl_interface/test/ei_accept_SUITE_data/ei_accept_test.c b/lib/erl_interface/test/ei_accept_SUITE_data/ei_accept_test.c
index 50df848b69..c209f506b1 100644
--- a/lib/erl_interface/test/ei_accept_SUITE_data/ei_accept_test.c
+++ b/lib/erl_interface/test/ei_accept_SUITE_data/ei_accept_test.c
@@ -74,6 +74,8 @@ TESTCASE(interpret)
     int i;
     ei_term term;
 
+    ei_init();
+
     ei_x_new(&x);
     while (get_bin_term(&x, &term) == 0) {
 	    char* buf = x.buff, func[MAXATOMLEN];
@@ -125,45 +127,26 @@ static void cmd_ei_connect_init(char* buf, int len)
     ei_x_free(&res);
 }
 
-static int my_listen(int port)
-{
-    int listen_fd;
-    struct sockaddr_in addr;
-    const char *on = "1";
-    
-    if ((listen_fd = socket(AF_INET, SOCK_STREAM, 0)) < 0)
-	return -1;
-    
-    setsockopt(listen_fd, SOL_SOCKET, SO_REUSEADDR, on, sizeof(on));
-    
-    memset((void*) &addr, 0, (size_t) sizeof(addr));
-    addr.sin_family = AF_INET;
-    addr.sin_port = htons(port);
-    addr.sin_addr.s_addr = htonl(INADDR_ANY);
-    
-    if (bind(listen_fd, (struct sockaddr*) &addr, sizeof(addr)) < 0)
-	return -1;
-
-    listen(listen_fd, 5);
-    return listen_fd;
-}
-
 static void cmd_ei_publish(char* buf, int len)
 {
     int index = 0;
-    int listen, r;
-    long port;
+    int iport, lfd, r;
+    long lport;
     ei_x_buff x;
     int i;
 
     /* get port */
-    if (ei_decode_long(buf, &index, &port) < 0)
+    if (ei_decode_long(buf, &index, &lport) < 0)
 	fail("expected int (port)");
     /* Make a listen socket */
-    if ((listen = my_listen(port)) <= 0)
+
+    iport = (int) lport;
+    lfd = ei_listen(&ec, &iport, 5);
+    if (lfd < 0)
 	fail("listen");
+    lport = (long) iport;
     
-    if ((i = ei_publish(&ec, port)) == -1)
+    if ((i = ei_publish(&ec, lport)) == -1)
 	fail("ei_publish");
 #ifdef VXWORKS
     save_fd(i);
@@ -171,7 +154,7 @@ static void cmd_ei_publish(char* buf, int len)
     /* send listen-fd, result and errno */
     ei_x_new_with_version(&x);
     ei_x_encode_tuple_header(&x, 3);
-    ei_x_encode_long(&x, listen);
+    ei_x_encode_long(&x, (long) lfd);
     ei_x_encode_long(&x, i);
     ei_x_encode_long(&x, erl_errno);
     send_bin_term(&x);
diff --git a/lib/erl_interface/test/ei_accept_SUITE_data/eiaccnode.c b/lib/erl_interface/test/ei_accept_SUITE_data/eiaccnode.c
index 308f843530..90c7a2259f 100644
--- a/lib/erl_interface/test/ei_accept_SUITE_data/eiaccnode.c
+++ b/lib/erl_interface/test/ei_accept_SUITE_data/eiaccnode.c
@@ -47,8 +47,6 @@
 #define MAIN main
 #endif
 
-static int my_listen(int port);
-
 /*
    A small einode.
    To be called from the test case ei_accept_SUITE:multi_thread
@@ -64,7 +62,6 @@ static int my_listen(int port);
 */
 
 static const char* cookie, * desthost;
-static int port; /* actually base port */
 
 #ifndef SD_SEND
 #ifdef SHUTWR
@@ -74,10 +71,6 @@ static int port; /* actually base port */
 #endif
 #endif
 
-#ifndef __WIN32__
-#define closesocket(fd) close(fd)
-#endif
-
 #ifdef __WIN32__
 static DWORD WINAPI
 #else
@@ -86,26 +79,32 @@ static void*
     einode_thread(void* num)
 {
     int n = (int)num;
+    int port;
     ei_cnode ec;
-    char myname[100], destname[100];
+    char myname[100], destname[100], filename[100];
     int r, fd, listen;
     ErlConnect conn;
     erlang_msg msg;
-/*    FILE* f;*/
+    FILE* file;
 
-    sprintf(myname, "eiacc%d", n);
-    printf("thread %d (%s) listening\n", n, myname, destname);
+    sprintf(filename, "eiacc%d_trace.txt", n);
+    file = fopen(filename, "w");
+
+    sprintf(myname, "eiacc%d", n); fflush(file);
     r = ei_connect_init(&ec, myname, cookie, 0);
-    if ((listen = my_listen(port+n)) <= 0) {
-	printf("listen err\n");
+    port = 0;
+    listen = ei_listen(&ec, &port, 5);
+    if (listen <= 0) {
+	fprintf(file, "listen err\n"); fflush(file);
 	exit(7);
     }
-    if (ei_publish(&ec, port + n) == -1) {
-	printf("ei_publish port %d\n", port+n);
+    fprintf(file, "thread %d (%s:%s) listening on port %d\n", n, myname, destname, port);
+    if (ei_publish(&ec, port) == -1) {
+	fprintf(file, "ei_publish port %d\n", port+n); fflush(file);
 	exit(8);
     }
     fd = ei_accept(&ec, listen, &conn);
-    printf("ei_accept %d\n", fd);
+    fprintf(file, "ei_accept %d\n", fd); fflush(file);
     if (fd >= 0) {
 	ei_x_buff x, xs;
 	int index, version;
@@ -117,37 +116,38 @@ static void*
 	    if (got == ERL_TICK)
 		continue;
 	    if (got == ERL_ERROR) {
-		printf("receive error %d\n", n);
+		fprintf(file, "receive error %d\n", n); fflush(file);
 		return 0;
 	    }
-	    printf("received %d\n", got);
+	    fprintf(file, "received %d\n", got); fflush(file);
 	    break;
 	}
 	index = 0;
 	if (ei_decode_version(x.buff, &index, &version) != 0) {
-	    printf("ei_decode_version %d\n", n);
+	    fprintf(file, "ei_decode_version %d\n", n); fflush(file);
 	    return 0;
 	}
 	if (ei_decode_pid(x.buff, &index, &pid) != 0) {
-	    printf("ei_decode_pid %d\n", n);
+	    fprintf(file, "ei_decode_pid %d\n", n); fflush(file);
 	    return 0;
 	}
-/*	fprintf(f, "got pid from %s \n", pid.node);*/
+	fprintf(file, "got pid from %s \n", pid.node); fflush(file);
 	ei_x_new_with_version(&xs);
 	ei_x_encode_tuple_header(&xs, 2);
 	ei_x_encode_long(&xs, n);
 	ei_x_encode_pid(&xs, &pid);
 	r = ei_send(fd, &pid, xs.buff, xs.index);
-/*	fprintf(f, "sent %d bytes %d\n", xs.index, r);*/
+	fprintf(file, "sent %d bytes %d\n", xs.index, r); fflush(file);
 	shutdown(fd, SD_SEND);
-	closesocket(fd);
+        ei_close_connection(fd);
 	ei_x_free(&x);
 	ei_x_free(&xs);
     } else {
-	printf("coudn't connect fd %d r %d\n", fd, r);
+	fprintf(file, "coudn't connect fd %d r %d\n", fd, r); fflush(file);
     }
-    printf("done thread %d\n", n);
-/*    fclose(f);*/
+    ei_close_connection(listen);
+    fprintf(file, "done thread %d\n", n);
+    fclose(file);
     return 0;
 }
 
@@ -170,12 +170,16 @@ MAIN(int argc, char *argv[])
     if (n > 100)
 	exit(2);
     desthost = argv[3];
-    port = atoi(argv[4]);
-#ifndef VXWORKS	   
-    no_threads = argv[5] != NULL && strcmp(argv[5], "nothreads") == 0;
-#else
+    if (argc == 3)
+        no_threads = 0;
+    else
+        no_threads = argv[4] != NULL && strcmp(argv[4], "nothreads") == 0;
+#ifdef VXWORKS
     no_threads = 1;
 #endif
+
+    ei_init();
+
     for (i = 0; i < n; ++i) {
 	if (!no_threads) {
 #ifndef VXWORKS
@@ -209,27 +213,3 @@ MAIN(int argc, char *argv[])
     printf("ok\n");
     return 0;
 }
-
-static int my_listen(int port)
-{
-    int listen_fd;
-    struct sockaddr_in addr;
-    const char *on = "1";
-    
-    if ((listen_fd = socket(AF_INET, SOCK_STREAM, 0)) < 0)
-	return -1;
-    
-    setsockopt(listen_fd, SOL_SOCKET, SO_REUSEADDR, on, sizeof(on));
-    
-    memset((void*) &addr, 0, (size_t) sizeof(addr));
-    addr.sin_family = AF_INET;
-    addr.sin_port = htons(port);
-    addr.sin_addr.s_addr = htonl(INADDR_ANY);
-    
-    if (bind(listen_fd, (struct sockaddr*) &addr, sizeof(addr)) < 0)
-	return -1;
-
-    listen(listen_fd, 5);
-    return listen_fd;
-}
-
diff --git a/lib/erl_interface/test/ei_connect_SUITE_data/ei_connect_test.c b/lib/erl_interface/test/ei_connect_SUITE_data/ei_connect_test.c
index 29c03d7604..58c0c7f8d8 100644
--- a/lib/erl_interface/test/ei_connect_SUITE_data/ei_connect_test.c
+++ b/lib/erl_interface/test/ei_connect_SUITE_data/ei_connect_test.c
@@ -73,6 +73,8 @@ TESTCASE(interpret)
     int i;
     ei_term term;
 
+    ei_init();
+
     ei_x_new(&x);
     while (get_bin_term(&x, &term) == 0) {
 	    char* buf = x.buff, func[MAXATOMLEN];
diff --git a/lib/erl_interface/test/ei_decode_SUITE_data/ei_decode_test.c b/lib/erl_interface/test/ei_decode_SUITE_data/ei_decode_test.c
index f945a7d378..e516f310b6 100644
--- a/lib/erl_interface/test/ei_decode_SUITE_data/ei_decode_test.c
+++ b/lib/erl_interface/test/ei_decode_SUITE_data/ei_decode_test.c
@@ -321,6 +321,8 @@ int ei_decode_my_string(const char *buf, int *index, char *to,
 
 TESTCASE(test_ei_decode_long)
 {
+    ei_init();
+
     EI_DECODE_2     (decode_long,  2, long, 0);
     EI_DECODE_2     (decode_long,  2, long, 255);
     EI_DECODE_2     (decode_long,  5, long, 256);
@@ -363,6 +365,8 @@ TESTCASE(test_ei_decode_long)
 
 TESTCASE(test_ei_decode_ulong)
 {
+    ei_init();
+
     EI_DECODE_2     (decode_ulong,  2, unsigned long, 0);
     EI_DECODE_2     (decode_ulong,  2, unsigned long, 255);
     EI_DECODE_2     (decode_ulong,  5, unsigned long, 256);
@@ -409,6 +413,8 @@ TESTCASE(test_ei_decode_ulong)
 
 TESTCASE(test_ei_decode_longlong)
 {
+    ei_init();
+
 #ifndef VXWORKS
     EI_DECODE_2     (decode_longlong,  2, EI_LONGLONG, 0);
     EI_DECODE_2     (decode_longlong,  2, EI_LONGLONG, 255);
@@ -443,6 +449,8 @@ TESTCASE(test_ei_decode_longlong)
 
 TESTCASE(test_ei_decode_ulonglong)
 {
+    ei_init();
+
 #ifndef VXWORKS
     EI_DECODE_2     (decode_ulonglong, 2, EI_ULONGLONG, 0);
     EI_DECODE_2     (decode_ulonglong, 2, EI_ULONGLONG, 255);
@@ -478,6 +486,8 @@ TESTCASE(test_ei_decode_ulonglong)
 
 TESTCASE(test_ei_decode_char)
 {
+    ei_init();
+
     EI_DECODE_2(decode_char, 2, char, 0);
     EI_DECODE_2(decode_char, 2, char, 0x7f);
     EI_DECODE_2(decode_char, 2, char, 0xff);
@@ -491,6 +501,8 @@ TESTCASE(test_ei_decode_char)
 
 TESTCASE(test_ei_decode_nonoptimal)
 {
+    ei_init();
+
     EI_DECODE_2(decode_char,  2, char, 42);
     EI_DECODE_2(decode_char,  5, char, 42);
     EI_DECODE_2(decode_char,  4, char, 42);
@@ -612,6 +624,8 @@ TESTCASE(test_ei_decode_nonoptimal)
 
 TESTCASE(test_ei_decode_misc)
 {
+    ei_init();
+
 /*
     EI_DECODE_0(decode_version);
 */
@@ -647,6 +661,7 @@ TESTCASE(test_ei_decode_misc)
 
 TESTCASE(test_ei_decode_utf8_atom)
 {
+    ei_init();
 
   EI_DECODE_STRING_4(decode_my_atom_as, 4, P99({229,0}), /* LATIN1 "�" */
 		   P99({ERLANG_ANY,ERLANG_LATIN1,ERLANG_LATIN1}));
diff --git a/lib/erl_interface/test/ei_decode_encode_SUITE_data/ei_decode_encode_test.c b/lib/erl_interface/test/ei_decode_encode_SUITE_data/ei_decode_encode_test.c
index 9977683d59..55d9ed1b1a 100644
--- a/lib/erl_interface/test/ei_decode_encode_SUITE_data/ei_decode_encode_test.c
+++ b/lib/erl_interface/test/ei_decode_encode_SUITE_data/ei_decode_encode_test.c
@@ -477,6 +477,8 @@ TESTCASE(test_ei_decode_encode)
 {
     int i;
 
+    ei_init();
+
     decode_encode_one(&fun_type);
     decode_encode_one(&pid_type);
     decode_encode_one(&port_type);
diff --git a/lib/erl_interface/test/ei_encode_SUITE_data/ei_encode_test.c b/lib/erl_interface/test/ei_encode_SUITE_data/ei_encode_test.c
index 32811fdf22..6f63cc5d7e 100644
--- a/lib/erl_interface/test/ei_encode_SUITE_data/ei_encode_test.c
+++ b/lib/erl_interface/test/ei_encode_SUITE_data/ei_encode_test.c
@@ -403,6 +403,8 @@
 
 TESTCASE(test_ei_encode_long)
 {
+    ei_init();
+
     EI_ENCODE_1(encode_long, 0);
 
     EI_ENCODE_1(encode_long, 255);
@@ -430,6 +432,8 @@ TESTCASE(test_ei_encode_long)
 
 TESTCASE(test_ei_encode_ulong)
 {
+    ei_init();
+
     EI_ENCODE_1(encode_ulong, 0);
 
     EI_ENCODE_1(encode_ulong, 255);
@@ -454,6 +458,7 @@ TESTCASE(test_ei_encode_ulong)
 
 TESTCASE(test_ei_encode_longlong)
 {
+    ei_init();
 
 #ifndef VXWORKS
 
@@ -494,6 +499,7 @@ TESTCASE(test_ei_encode_longlong)
 
 TESTCASE(test_ei_encode_ulonglong)
 {
+    ei_init();
 
 #ifndef VXWORKS
 
@@ -527,6 +533,8 @@ TESTCASE(test_ei_encode_ulonglong)
 
 TESTCASE(test_ei_encode_char)
 {
+    ei_init();
+
     EI_ENCODE_1(encode_char, 0);
 
     EI_ENCODE_1(encode_char, 0x7f);
@@ -540,6 +548,8 @@ TESTCASE(test_ei_encode_char)
 
 TESTCASE(test_ei_encode_misc)
 {
+    ei_init();
+
     EI_ENCODE_0(encode_version);
 
     EI_ENCODE_1(encode_double, 0.0);
@@ -594,6 +604,8 @@ TESTCASE(test_ei_encode_fails)
     char buf[1024];
     int index;
 
+    ei_init();
+
     /* FIXME the ei_x versions are not tested */
 
     index = 0;
@@ -660,6 +672,7 @@ TESTCASE(test_ei_encode_fails)
 
 TESTCASE(test_ei_encode_utf8_atom)
 {
+    ei_init();
 
   EI_ENCODE_3(encode_atom_as, "�", ERLANG_LATIN1, ERLANG_UTF8);
   EI_ENCODE_3(encode_atom_as, "�", ERLANG_LATIN1, ERLANG_LATIN1);
@@ -686,6 +699,7 @@ TESTCASE(test_ei_encode_utf8_atom)
 
 TESTCASE(test_ei_encode_utf8_atom_len)
 {
+    ei_init();
 
   EI_ENCODE_4(encode_atom_len_as, "���", 1, ERLANG_LATIN1, ERLANG_UTF8);
   EI_ENCODE_4(encode_atom_len_as, "���", 2, ERLANG_LATIN1, ERLANG_LATIN1);
diff --git a/lib/erl_interface/test/ei_format_SUITE_data/ei_format_test.c b/lib/erl_interface/test/ei_format_SUITE_data/ei_format_test.c
index 8450332b28..1c0443c0f4 100644
--- a/lib/erl_interface/test/ei_format_SUITE_data/ei_format_test.c
+++ b/lib/erl_interface/test/ei_format_SUITE_data/ei_format_test.c
@@ -48,6 +48,8 @@ send_format(char* format)
 
 TESTCASE(atoms)
 {
+    ei_init();
+
     send_format("''");
     send_format("'a'");
     send_format("'A'");
@@ -82,6 +84,8 @@ TESTCASE(atoms)
 
 TESTCASE(tuples)
 {
+    ei_init();
+
     send_format("{}");
     send_format("{a}");
     send_format("{a, b}");
@@ -108,6 +112,8 @@ TESTCASE(lists)
     ei_x_buff x;
     static char str[65537];
 
+    ei_init();
+
     send_format("[]");
     send_format("[a]");
     send_format("[a, b]");
@@ -177,6 +183,8 @@ TESTCASE(format_wo_ver) {
  */
     ei_x_buff x;
     
+    ei_init();
+
     ei_x_new (&x);
     ei_x_format(&x, "[-1, +2, ~c, {~a,~s},{~a,~i}]", 'c', "a", "b", "c", 10);
     send_bin_term(&x);
diff --git a/lib/erl_interface/test/ei_print_SUITE_data/ei_print_test.c b/lib/erl_interface/test/ei_print_SUITE_data/ei_print_test.c
index 15cfbcae34..80be3016e6 100644
--- a/lib/erl_interface/test/ei_print_SUITE_data/ei_print_test.c
+++ b/lib/erl_interface/test/ei_print_SUITE_data/ei_print_test.c
@@ -84,6 +84,8 @@ static void send_printed3f(char* format, float f1, float f2)
 
 TESTCASE(atoms)
 {
+    ei_init();
+
     send_printed("''");
     send_printed("'a'");
     send_printed("'A'");
@@ -118,6 +120,8 @@ TESTCASE(atoms)
 
 TESTCASE(tuples)
 {
+    ei_init();
+
     send_printed("{}");
     send_printed("{a}");
     send_printed("{a, b}");
@@ -138,6 +142,8 @@ TESTCASE(lists)
 {
     ei_x_buff x;
 
+    ei_init();
+
     send_printed("[]");
     send_printed("[a]");
     send_printed("[a, b]");
@@ -164,6 +170,8 @@ TESTCASE(strings)
 {
     ei_x_buff x;
 
+    ei_init();
+
     send_printed("\"\n\"");
     send_printed("\"\r\n\"");
     send_printed("\"a\"");
diff --git a/lib/erl_interface/test/ei_tmo_SUITE_data/ei_tmo_test.c b/lib/erl_interface/test/ei_tmo_SUITE_data/ei_tmo_test.c
index 39846e4a58..693e405f75 100644
--- a/lib/erl_interface/test/ei_tmo_SUITE_data/ei_tmo_test.c
+++ b/lib/erl_interface/test/ei_tmo_SUITE_data/ei_tmo_test.c
@@ -96,6 +96,8 @@ TESTCASE(framework_check)
     int i;
 #endif
 
+    ei_init();
+
     OPEN_DEBUGFILE(1);
     
     DEBUGF(("B�rjar... \n"));
@@ -340,6 +342,7 @@ TESTCASE(recv_tmo)
     int com_sock = -1;
     ei_cnode nodeinfo;
 
+    ei_init();
 
     OPEN_DEBUGFILE(5);
 
@@ -450,6 +453,7 @@ TESTCASE(send_tmo)
     int com_sock = -1;
     ei_cnode nodeinfo;
 
+    ei_init();
 
     OPEN_DEBUGFILE(4);
 
@@ -591,7 +595,7 @@ TESTCASE(connect_tmo)
     int com_sock = -1;
     ei_cnode nodeinfo;
     
-
+    ei_init();
 
     OPEN_DEBUGFILE(3);
 
@@ -680,7 +684,7 @@ TESTCASE(accept_tmo)
     ErlConnect peer;
     ei_cnode nodeinfo;
     
-
+    ei_init();
 
     OPEN_DEBUGFILE(2);
 
diff --git a/lib/erl_interface/test/erl_call_SUITE.erl b/lib/erl_interface/test/erl_call_SUITE.erl
new file mode 100644
index 0000000000..9e2b2e4251
--- /dev/null
+++ b/lib/erl_interface/test/erl_call_SUITE.erl
@@ -0,0 +1,96 @@
+%%
+%% %CopyrightBegin%
+%% 
+%% Copyright Ericsson AB 2019. All Rights Reserved.
+%% 
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%% 
+%% %CopyrightEnd%
+%%
+
+%%
+-module(erl_call_SUITE).
+
+-include_lib("common_test/include/ct.hrl").
+
+-export([all/0, smoke/1]).
+
+all() -> 
+    [smoke].
+
+smoke(Config) when is_list(Config) ->
+    ErlCall = find_erl_call(),
+    NameSwitch = case net_kernel:longnames() of
+                     true ->
+                         "-name";
+                     false ->
+                         "-sname"
+                 end,
+    Name = atom_to_list(?MODULE)
+        ++ "-"
+        ++ integer_to_list(erlang:system_time(microsecond)),
+
+    ArgsList = ["-s", "-a", "erlang node", NameSwitch, Name],
+    io:format("erl_call: \"~ts\"\n~nargs list: ~p~n", [ErlCall, ArgsList]),
+    CmdRes = get_smoke_port_res(open_port({spawn_executable, ErlCall},
+                                          [{args, ArgsList}, eof]), []),
+    io:format("CmdRes: ~p~n", [CmdRes]),
+
+    [_, Hostname] = string:lexemes(atom_to_list(node()), "@"),
+    NodeName = list_to_atom(Name ++ "@" ++ Hostname),
+    io:format("NodeName: ~p~n~n", [NodeName]),
+
+    pong = net_adm:ping(NodeName),
+    rpc:cast(NodeName, erlang, halt, []),
+    NodeName = list_to_atom(string:trim(CmdRes, both, "'")),
+    ok.
+
+%
+% Utility functions...
+%
+
+find_erl_call() ->
+    ErlCallName = case os:type() of
+                      {win32, _} -> "erl_call.exe";
+                      _ -> "erl_call"
+                  end,
+    LibDir = code:lib_dir(erl_interface),
+    InstalledErlCall = filename:join([LibDir, "bin", ErlCallName]),
+    TargetDir = erlang:system_info(system_architecture),
+    TargetErlCall = filename:join([LibDir, "bin", TargetDir, ErlCallName]),
+    
+    try
+        lists:foreach(fun (F) ->
+                              io:format("Checking: \"~ts\"~n", [F]),
+                              case file:read_file_info(F) of
+                                  {ok, _} ->
+                                      throw(F);
+                                  _ ->
+                                      ok
+                              end
+                      end,
+                      [InstalledErlCall, TargetErlCall]),
+        exit({missing, erl_call})
+    catch
+        throw:ErlCall ->
+            ErlCall
+    end.
+
+get_smoke_port_res(Port, Acc) when is_port(Port) ->
+    receive
+        {Port, {data, Data}} ->
+            get_smoke_port_res(Port, [Acc|Data]);
+        {Port, eof} ->
+            lists:flatten(Acc)
+    end.
+            
diff --git a/lib/erl_interface/test/erl_eterm_SUITE.erl b/lib/erl_interface/test/erl_eterm_SUITE.erl
index 77910a9fc7..4605293c74 100644
--- a/lib/erl_interface/test/erl_eterm_SUITE.erl
+++ b/lib/erl_interface/test/erl_eterm_SUITE.erl
@@ -73,6 +73,10 @@
 
 -import(runner, [get_term/1]).
 
+-define(REFERENCE_EXT, $e).
+-define(NEW_REFERENCE_EXT, $r).
+-define(NEWER_REFERENCE_EXT, $Z).
+
 %% This test suite controls the running of the C language functions
 %% in eterm_test.c and print_term.c.
 
@@ -1026,9 +1030,11 @@ cnode_1(Config) when is_list(Config) ->
 
 check_ref(Ref) ->
     case bin_ext_type(Ref) of
-        101 ->
+        ?REFERENCE_EXT ->
             ct:fail(oldref);
-        114 ->
+        ?NEW_REFERENCE_EXT ->
+            ok;
+        ?NEWER_REFERENCE_EXT ->
             ok;
         Type ->
             ct:fail({type, Type})
diff --git a/lib/erl_interface/test/erl_eterm_SUITE_data/cnode.c b/lib/erl_interface/test/erl_eterm_SUITE_data/cnode.c
index bead0f8413..b87feb9dfc 100644
--- a/lib/erl_interface/test/erl_eterm_SUITE_data/cnode.c
+++ b/lib/erl_interface/test/erl_eterm_SUITE_data/cnode.c
@@ -20,7 +20,7 @@
 
 #include <stdlib.h>
 #include <stdio.h>
-
+#include <string.h>
 #include "ei.h"
 #include "erl_interface.h"
 
@@ -68,6 +68,7 @@ MAIN(int argc, char **argv)
     char host[80];
     int number;
     ETERM *ref, *ref1, *ref2;
+    FILE *dfile = fopen("cnode_debug_printout", "w");
 
     erl_init(NULL, 0);
 
@@ -80,28 +81,30 @@ MAIN(int argc, char **argv)
     gethostname(host, sizeof(host));
     sprintf(node, "c%d@%s", number, host);
 
-    printf("s = %d\n", s);
+    fprintf(dfile, "s = %d\n", s); fflush(dfile);
 
     sprintf(server, "test_server@%s", host);
     fd = erl_connect(server);
-    printf("fd = %d\n", fd);
+    fprintf(dfile, "fd = %d\n", fd);
 
-/*    printf("dist = %d\n", erl_distversion(fd)); */
+/*    fprintf(dfile, "dist = %d\n", erl_distversion(fd)); */
 
 #if 1
     ref = erl_mk_long_ref(node, 4711, 113, 98, 0);
 #else
     ref = erl_mk_ref(node, 4711, 0);
 #endif
-    printf("ref = %d\n", ref);
+    fprintf(dfile, "ref = %p\n", ref); fflush(dfile);
 
     s = erl_reg_send(fd, "mip", ref);
-    printf("s = %d\n", s);
+    fprintf(dfile, "s = %d\n", s); fflush(dfile);
 
     {
       ETERM* emsg;
       emsg = SELF(fd);
-      erl_reg_send(fd,"mip",emsg);
+      fprintf(dfile, "pid = %p\n", emsg); fflush(dfile);
+      s = erl_reg_send(fd,"mip",emsg);
+      fprintf(dfile, "s2 = %d\n", s); fflush(dfile);
       erl_free_term(emsg);
     }
 
@@ -116,28 +119,29 @@ MAIN(int argc, char **argv)
 #endif
 	switch (s) {
 	  case ERL_TICK:
-	    printf("tick\n");
+	    fprintf(dfile, "tick\n");
 	    break;
 	  case ERL_ERROR:
-	    printf("error\n");
+            fprintf(dfile, "error: %s (%d)\n", strerror(erl_errno), erl_errno);
 	    break;
 	  case ERL_MSG:
-	    printf("msg %d\n", msgsize);
+	    fprintf(dfile, "msg %d\n", msgsize);
 	    break;
 	  default:
-	    printf("unknown result %d\n", s);
+	    fprintf(dfile, "unknown result %d\n", s);
 	    break;
 	}
+        fflush(dfile);
     } while (s == ERL_TICK);
 
     s = erl_reg_send(fd, "mip", msg.msg);
-    printf("s = %d\n", s);
+    fprintf(dfile, "s = %d\n", s); fflush(dfile);
     s = erl_reg_send(fd, "mip", msg.to);
-    printf("s = %d\n", s);
+    fprintf(dfile, "s = %d\n", s); fflush(dfile);
 #if 0
     /* from = NULL! */
     s = erl_reg_send(fd, "mip", msg.from);
-    printf("s = %d\n", s);
+    fprintf(dfile, "s = %d\n", s); fflush(dfile);
 #endif
 
 #if 0
@@ -150,17 +154,19 @@ MAIN(int argc, char **argv)
     ref1 = erl_mk_long_ref(node, 4711, 113, 98, 0);
     ref2 = erl_mk_ref(node, 4711, 0);
     s = erl_encode(ref1, buf1);
-    printf("enc1 s = %d\n", s);
+    fprintf(dfile, "enc1 s = %d\n", s); fflush(dfile);
     s = erl_encode(ref2, buf2);
-    printf("enc2 s = %d\n", s);
+    fprintf(dfile, "enc2 s = %d\n", s); fflush(dfile);
     s = erl_compare_ext(buf1, buf2);
-    printf("comp s = %d\n", s);
+    fprintf(dfile, "comp s = %d\n", s); fflush(dfile);
     
     /* Compare, in another way */
     s = erl_match(ref1, ref2);
-    printf("match s = %d\n", s);
+    fprintf(dfile, "match s = %d\n", s); fflush(dfile);
 #endif
 
+    fclose(dfile);
+
     erl_close_connection(fd);
 
     return 0;
diff --git a/lib/erl_interface/vsn.mk b/lib/erl_interface/vsn.mk
index 06ef907d6c..dae6052d55 100644
--- a/lib/erl_interface/vsn.mk
+++ b/lib/erl_interface/vsn.mk
@@ -1,2 +1,2 @@
-EI_VSN = 3.10.4
+EI_VSN = 3.11.1
 ERL_INTERFACE_VSN = $(EI_VSN)
diff --git a/lib/et/doc/src/et.xml b/lib/et/doc/src/et.xml
index 3009b559e1..a362d00b3e 100644
--- a/lib/et/doc/src/et.xml
+++ b/lib/et/doc/src/et.xml
@@ -32,14 +32,14 @@
     <rev>%VSN%</rev>
     <file>et</file>
   </header>
-  <module>et</module>
+  <module since="">et</module>
   <modulesummary>Main API of the Event Trace (ET) application</modulesummary>
   <description>
     <p>Interface module for the Event Trace (ET) application</p>
   </description>
   <funcs>
     <func>
-      <name>trace_me(DetailLevel, From, To, Label, Contents) -> hopefully_traced</name>
+      <name since="OTP R13B04">trace_me(DetailLevel, From, To, Label, Contents) -> hopefully_traced</name>
       <fsummary>A function that is intended to be traced.</fsummary>
       <type>
         <v>DetailLevel = integer(X) when X =&lt; 0, X >= 100</v>
@@ -70,7 +70,7 @@
     </func>
 
     <func>
-      <name>trace_me(DetailLevel, FromTo, Label, Contents) -> hopefully_traced</name>
+      <name since="OTP R13B04">trace_me(DetailLevel, FromTo, Label, Contents) -> hopefully_traced</name>
       <fsummary>A function that is intended to be traced.</fsummary>
       <desc>
        <p>Invokes <c>et:trace_me/5</c> with both <c>From</c> and <c>To</c>
@@ -79,8 +79,8 @@
     </func>
 
     <func>
-      <name>phone_home(DetailLevel, FromTo, Label, Contents) -> hopefully_traced</name>
-      <name>phone_home(DetailLevel, From, To, Label, Contents) -> hopefully_traced</name>
+      <name since="">phone_home(DetailLevel, FromTo, Label, Contents) -> hopefully_traced</name>
+      <name since="">phone_home(DetailLevel, From, To, Label, Contents) -> hopefully_traced</name>
       <fsummary>Send a signal to the outer space</fsummary>
       <desc>
         <p>These functions sends a signal to the outer space and the
@@ -90,8 +90,8 @@
       </desc>
     </func>
     <func>
-      <name>report_event(DetailLevel, FromTo, Label, Contents) -> hopefully_traced</name>
-      <name>report_event(DetailLevel, From, To, Label, Contents) -> hopefully_traced</name>
+      <name since="">report_event(DetailLevel, FromTo, Label, Contents) -> hopefully_traced</name>
+      <name since="">report_event(DetailLevel, From, To, Label, Contents) -> hopefully_traced</name>
       <fsummary>Deprecated functions</fsummary>
       <desc>
         <p>Deprecated functions which for the time being are kept for
diff --git a/lib/et/doc/src/et_collector.xml b/lib/et/doc/src/et_collector.xml
index fd90ecfc41..f908612797 100644
--- a/lib/et/doc/src/et_collector.xml
+++ b/lib/et/doc/src/et_collector.xml
@@ -32,14 +32,14 @@
     <rev>%VSN%</rev>
     <file>et_collector.xml</file>
   </header>
-  <module>et_collector</module>
+  <module since="">et_collector</module>
   <modulesummary>Collect trace events and provide a backing storage appropriate for iteration </modulesummary>
   <description>
     <p>Interface module for the Event Trace (ET) application</p>
   </description>
   <funcs>
     <func>
-      <name>start_link(Options) -> {ok, CollectorPid} | {error, Reason}</name>
+      <name since="">start_link(Options) -> {ok, CollectorPid} | {error, Reason}</name>
       <fsummary>Start a collector process</fsummary>
       <type>
         <v>Options = [option()]</v>
@@ -105,7 +105,7 @@
       </desc>
     </func>
     <func>
-      <name>stop(CollectorPid) -> ok</name>
+      <name since="">stop(CollectorPid) -> ok</name>
       <fsummary>Stop a collector process</fsummary>
       <type>
         <v>CollectorPid = pid()</v>
@@ -115,7 +115,7 @@
       </desc>
     </func>
     <func>
-      <name>save_event_file(CollectorPid, FileName, Options) -> ok | {error, Reason}</name>
+      <name since="">save_event_file(CollectorPid, FileName, Options) -> ok | {error, Reason}</name>
       <fsummary>Save the events to a file</fsummary>
       <type>
         <v>CollectorPid = pid()</v>
@@ -139,7 +139,7 @@
       </desc>
     </func>
     <func>
-      <name>load_event_file(CollectorPid, FileName) -> {ok, BadBytes} | exit(Reason)</name>
+      <name since="">load_event_file(CollectorPid, FileName) -> {ok, BadBytes} | exit(Reason)</name>
       <fsummary>Load the event table from a file</fsummary>
       <type>
         <v>CollectorPid = pid()</v>
@@ -152,9 +152,9 @@
       </desc>
     </func>
     <func>
-      <name>report(Handle, TraceOrEvent) -> {ok, Continuation} | exit(Reason)</name>
-      <name>report_event(Handle, DetailLevel, FromTo, Label, Contents) -> {ok, Continuation} | exit(Reason)</name>
-      <name>report_event(Handle, DetailLevel, From, To, Label, Contents) -> {ok, Continuation} | exit(Reason)</name>
+      <name since="">report(Handle, TraceOrEvent) -> {ok, Continuation} | exit(Reason)</name>
+      <name since="">report_event(Handle, DetailLevel, FromTo, Label, Contents) -> {ok, Continuation} | exit(Reason)</name>
+      <name since="">report_event(Handle, DetailLevel, From, To, Label, Contents) -> {ok, Continuation} | exit(Reason)</name>
       <fsummary>Report an event to the collector</fsummary>
       <type>
         <v>Handle = Initial | Continuation</v>
@@ -181,7 +181,7 @@
       </desc>
     </func>
     <func>
-      <name>make_key(Type, Stuff) -> Key</name>
+      <name since="">make_key(Type, Stuff) -> Key</name>
       <fsummary>Make a key out of an event record or an old key</fsummary>
       <type>
         <v>Type = record(table_handle) | trace_ts | event_ts</v>
@@ -193,7 +193,7 @@
       </desc>
     </func>
     <func>
-      <name>get_table_handle(CollectorPid) -> Handle</name>
+      <name since="">get_table_handle(CollectorPid) -> Handle</name>
       <fsummary>Return a table handle</fsummary>
       <type>
         <v>CollectorPid = pid()</v>
@@ -204,7 +204,7 @@
       </desc>
     </func>
     <func>
-      <name>get_global_pid() -> CollectorPid | exit(Reason)</name>
+      <name since="">get_global_pid() -> CollectorPid | exit(Reason)</name>
       <fsummary>Return a the identity of the globally registered collector if there is any</fsummary>
       <type>
         <v>CollectorPid = pid()</v>
@@ -216,7 +216,7 @@
       </desc>
     </func>
     <func>
-      <name>change_pattern(CollectorPid, RawPattern) -> {old_pattern, TracePattern}</name>
+      <name since="">change_pattern(CollectorPid, RawPattern) -> {old_pattern, TracePattern}</name>
       <fsummary>Change active trace pattern globally on all trace nodes</fsummary>
       <type>
         <v>CollectorPid = pid()</v>
@@ -232,9 +232,9 @@
       </desc>
     </func>
     <func>
-      <name>dict_insert(CollectorPid, {filter, collector}, FilterFun) -> ok</name>
-      <name>dict_insert(CollectorPid, {subscriber, SubscriberPid}, Void) -> ok</name>
-      <name>dict_insert(CollectorPid, Key, Val) -> ok</name>
+      <name since="">dict_insert(CollectorPid, {filter, collector}, FilterFun) -> ok</name>
+      <name since="">dict_insert(CollectorPid, {subscriber, SubscriberPid}, Void) -> ok</name>
+      <name since="">dict_insert(CollectorPid, Key, Val) -> ok</name>
       <fsummary>Insert a dictionary entry and send a {et, {dict_insert, Key, Val}} tuple to all registered subscribers.</fsummary>
       <type>
         <v>CollectorPid = pid()</v>
@@ -259,7 +259,7 @@
       </desc>
     </func>
     <func>
-      <name>dict_lookup(CollectorPid, Key) -> [Val]</name>
+      <name since="">dict_lookup(CollectorPid, Key) -> [Val]</name>
       <fsummary>Lookup a dictionary entry and return zero or one value</fsummary>
       <type>
         <v>CollectorPid = pid()</v>
@@ -273,7 +273,7 @@
       </desc>
     </func>
     <func>
-      <name>dict_delete(CollectorPid, Key) -> ok</name>
+      <name since="">dict_delete(CollectorPid, Key) -> ok</name>
       <fsummary>Delete a dictionary entry and send a {et, {dict_delete, Key}} tuple to all registered subscribers.</fsummary>
       <type>
         <v>CollectorPid = pid()</v>
@@ -290,7 +290,7 @@
       </desc>
     </func>
     <func>
-      <name>dict_match(CollectorPid, Pattern) -> [Match]</name>
+      <name since="">dict_match(CollectorPid, Pattern) -> [Match]</name>
       <fsummary>Match some dictionary entries</fsummary>
       <type>
         <v>CollectorPid = pid()</v>
@@ -306,7 +306,7 @@
       </desc>
     </func>
     <func>
-      <name>multicast(_CollectorPid, Msg) -> ok</name>
+      <name since="">multicast(_CollectorPid, Msg) -> ok</name>
       <fsummary>Sends a message to all registered subscribers</fsummary>
       <type>
         <v>CollectorPid = pid()</v>
@@ -318,7 +318,7 @@
       </desc>
     </func>
     <func>
-      <name>start_trace_client(CollectorPid, Type, Parameters) -> file_loaded | {trace_client_pid, pid()} | exit(Reason)</name>
+      <name since="">start_trace_client(CollectorPid, Type, Parameters) -> file_loaded | {trace_client_pid, pid()} | exit(Reason)</name>
       <fsummary>Load raw Erlang trace from a file, port or process.</fsummary>
       <type>
         <v>Type       = dbg_trace_client_type()</v>
@@ -330,14 +330,14 @@
       </desc>
     </func>
     <func>
-      <name>iterate(Handle, Prev, Limit) -> NewAcc</name>
+      <name since="">iterate(Handle, Prev, Limit) -> NewAcc</name>
       <fsummary>Iterates over the currently stored events</fsummary>
       <desc>
         <p>Short for iterate(Handle, Prev, Limit, undefined, Prev) -&gt; NewAcc</p>
       </desc>
     </func>
     <func>
-      <name>iterate(Handle, Prev, Limit, Fun, Acc) -> NewAcc</name>
+      <name since="">iterate(Handle, Prev, Limit, Fun, Acc) -> NewAcc</name>
       <fsummary>Iterate over the currently stored events</fsummary>
       <type>
         <v>Handle = collector_pid() | table_handle()</v>
@@ -361,7 +361,7 @@
       </desc>
     </func>
     <func>
-      <name>clear_table(Handle) -> ok</name>
+      <name since="">clear_table(Handle) -> ok</name>
       <fsummary>Clear the event table</fsummary>
       <type>
         <v>Handle = collector_pid() | table_handle()</v>
diff --git a/lib/et/doc/src/et_selector.xml b/lib/et/doc/src/et_selector.xml
index 30ca74c872..3c766cafb7 100644
--- a/lib/et/doc/src/et_selector.xml
+++ b/lib/et/doc/src/et_selector.xml
@@ -32,7 +32,7 @@
     <rev>%VSN%</rev>
     <file>et_selector.xml</file>
   </header>
-  <module>et_selector</module>
+  <module since="">et_selector</module>
   <modulesummary>Define event transforms and trace patterns</modulesummary>
   <description>
     <p></p>
@@ -40,7 +40,7 @@
   
   <funcs>
     <func>
-      <name>make_pattern(RawPattern) -> TracePattern</name>
+      <name since="">make_pattern(RawPattern) -> TracePattern</name>
       <fsummary>Makes a trace pattern suitable to feed change_pattern/1</fsummary>
 
       <type>
@@ -61,7 +61,7 @@
     </func>
 
     <func>
-      <name>change_pattern(Pattern) -> ok</name>
+      <name since="">change_pattern(Pattern) -> ok</name>
 
       <fsummary>Activates/deactivates tracing by changing the current trace pattern</fsummary>
 
@@ -85,7 +85,7 @@
       </desc>
     </func>
     <func>
-      <name>parse_event(Mod, ValidTraceData) -> false | true | {true, Event}</name>
+      <name since="">parse_event(Mod, ValidTraceData) -> false | true | {true, Event}</name>
 
       <fsummary>Transforms trace data and makes an event record out of it</fsummary>
 
diff --git a/lib/et/doc/src/et_viewer.xml b/lib/et/doc/src/et_viewer.xml
index e0b39636e9..9d59eef668 100644
--- a/lib/et/doc/src/et_viewer.xml
+++ b/lib/et/doc/src/et_viewer.xml
@@ -32,14 +32,14 @@
     <rev>%VSN%</rev>
     <file>et_viewer.xml</file>
   </header>
-  <module>et_viewer</module>
+  <module since="">et_viewer</module>
   <modulesummary>Displays a sequence chart for trace events (messages/actions)</modulesummary>
   <description>
     <p></p>
   </description>
   <funcs>
     <func>
-      <name>file(FileName) -> {ok, ViewerPid} | {error, Reason}</name>
+      <name since="">file(FileName) -> {ok, ViewerPid} | {error, Reason}</name>
       <fsummary>Start a new event viewer and a corresponding collector and load them with trace events from a trace file.</fsummary>
       <type>
         <v>FileName() = string()</v>
@@ -52,7 +52,7 @@
       </desc>
     </func>
     <func>
-      <name>start() -> ok</name>
+      <name since="">start() -> ok</name>
       <fsummary>Simplified start of a sequence chart viewer with global tracing activated.</fsummary>
       <desc>
         <p>Simplified start of a sequence chart viewer with
@@ -62,7 +62,7 @@
       </desc>
     </func>
     <func>
-      <name>start(Options) -> ok</name>
+      <name since="">start(Options) -> ok</name>
       <fsummary>Start of a sequence chart viewer without linking to the parent process.</fsummary>
       <desc>
         <p>Start of a sequence chart viewer without linking
@@ -70,7 +70,7 @@
       </desc>
     </func>
     <func>
-      <name>start_link(Options) -> {ok, ViewerPid} | {error, Reason}</name>
+      <name since="">start_link(Options) -> {ok, ViewerPid} | {error, Reason}</name>
       <fsummary>Start a sequence chart viewer for trace events (messages/actions)</fsummary>
       <type>
         <v>Options = [option() | collector_option()]</v>
@@ -125,7 +125,7 @@
       </desc>
     </func>
     <func>
-      <name>get_collector_pid(ViewerPid) -> CollectorPid</name>
+      <name since="">get_collector_pid(ViewerPid) -> CollectorPid</name>
       <fsummary>Returns the identifier of the collector process</fsummary>
       <type>
         <v>ViewerPid = pid()</v>
@@ -136,7 +136,7 @@
       </desc>
     </func>
     <func>
-      <name>stop(ViewerPid) -> ok</name>
+      <name since="">stop(ViewerPid) -> ok</name>
       <fsummary>Stops a viewer</fsummary>
       <type>
         <v>ViewerPid = pid()</v>
diff --git a/lib/ftp/doc/src/ftp.xml b/lib/ftp/doc/src/ftp.xml
index 34e3ff84b0..9645b03364 100644
--- a/lib/ftp/doc/src/ftp.xml
+++ b/lib/ftp/doc/src/ftp.xml
@@ -29,7 +29,7 @@
     <rev>B</rev>
     <file>ftp.xml</file>
   </header>
-  <module>ftp</module>
+  <module since="">ftp</module>
   <modulesummary>A File Transfer Protocol client.</modulesummary>
 
   <description>
@@ -272,7 +272,7 @@
   <funcs>
 
     <func>
-      <name>account(Pid, Account) -> ok | {error, Reason}</name>
+      <name since="">account(Pid, Account) -> ok | {error, Reason}</name>
       <fsummary>Specifies which account to use.</fsummary>
       <type>
         <v>Pid = pid()</v>
@@ -289,8 +289,8 @@
     </func>
 
     <func>
-      <name>append(Pid, LocalFile) -> </name>
-      <name>append(Pid, LocalFile, RemoteFile) -> ok | {error, Reason}</name>
+      <name since="">append(Pid, LocalFile) -> </name>
+      <name since="">append(Pid, LocalFile, RemoteFile) -> ok | {error, Reason}</name>
       <fsummary>Transfers a file to remote server, and appends it to 
       <c>Remotefile</c>.</fsummary>
       <type>
@@ -310,7 +310,7 @@
     </func>
 
     <func>
-      <name>append_bin(Pid, Bin, RemoteFile) -> ok | {error, Reason}</name>
+      <name since="">append_bin(Pid, Bin, RemoteFile) -> ok | {error, Reason}</name>
       <fsummary>Transfers a binary into a remote file.</fsummary>
       <type>
         <v>Pid = pid()</v>
@@ -328,7 +328,7 @@
     </func>
 
     <func>
-      <name>append_chunk(Pid, Bin) -> ok | {error, Reason}</name>
+      <name since="">append_chunk(Pid, Bin) -> ok | {error, Reason}</name>
       <fsummary>Appends a chunk to the remote file.</fsummary>
       <type>
         <v>Pid = pid()</v>
@@ -348,7 +348,7 @@
     </func>
 
     <func>
-      <name>append_chunk_start(Pid, File) -> ok | {error, Reason}</name>
+      <name since="">append_chunk_start(Pid, File) -> ok | {error, Reason}</name>
       <fsummary>Starts transfer of file chunks for appending to <c>File</c>.</fsummary>
       <type>
         <v>Pid = pid()</v>
@@ -365,7 +365,7 @@
     </func>
 
     <func>
-      <name>append_chunk_end(Pid) -> ok | {error, Reason}</name>
+      <name since="">append_chunk_end(Pid) -> ok | {error, Reason}</name>
       <fsummary>Stops transfer of chunks for appending.</fsummary>
       <type>
         <v>Pid = pid()</v>
@@ -381,7 +381,7 @@
     </func>
 
     <func>
-      <name>cd(Pid, Dir) -> ok | {error, Reason}</name>
+      <name since="">cd(Pid, Dir) -> ok | {error, Reason}</name>
       <fsummary>Changes remote working directory.</fsummary>
       <type>
         <v>Pid = pid()</v>
@@ -397,7 +397,7 @@
     </func>
     
     <func>
-      <name>close(Pid) -> ok</name>
+      <name since="">close(Pid) -> ok</name>
       <fsummary>Ends the FTP session.</fsummary>
       <type>
 	<v>Pid = pid()</v>
@@ -411,7 +411,7 @@
     </func>
 
     <func>
-      <name>delete(Pid, File) -> ok | {error, Reason}</name>
+      <name since="">delete(Pid, File) -> ok | {error, Reason}</name>
       <fsummary>Deletes a file at the remote server.</fsummary>
       <type>
         <v>Pid = pid()</v>
@@ -426,7 +426,7 @@
     </func>
 
     <func>
-      <name>formaterror(Tag) -> string()</name>
+      <name since="">formaterror(Tag) -> string()</name>
       <fsummary>Returns error diagnostics.</fsummary>
       <type>
         <v>Tag = {error, atom()} | atom()</v>
@@ -440,7 +440,7 @@
     </func>
 
     <func>
-      <name>lcd(Pid, Dir) -> ok | {error, Reason}</name>
+      <name since="">lcd(Pid, Dir) -> ok | {error, Reason}</name>
       <fsummary>Changes local working directory.</fsummary>
       <type>
         <v>Pid = pid()</v>
@@ -455,7 +455,7 @@
     </func>
 
     <func>
-      <name>lpwd(Pid) -> {ok, Dir}</name>
+      <name since="">lpwd(Pid) -> {ok, Dir}</name>
       <fsummary>Gets local current working directory.</fsummary>
       <type>
         <v>Pid = pid()</v>
@@ -470,8 +470,8 @@
     </func>
 
     <func>
-      <name>ls(Pid) -> </name>
-      <name>ls(Pid, Pathname) -> {ok, Listing} | {error, Reason}</name>
+      <name since="">ls(Pid) -> </name>
+      <name since="">ls(Pid, Pathname) -> {ok, Listing} | {error, Reason}</name>
       <fsummary>List of files.</fsummary>
       <type>
         <v>Pid = pid()</v>
@@ -493,7 +493,7 @@
     </func>
 
     <func>
-      <name>mkdir(Pid, Dir) -> ok | {error, Reason}</name>
+      <name since="">mkdir(Pid, Dir) -> ok | {error, Reason}</name>
       <fsummary>Creates a remote directory.</fsummary>
       <type>
         <v>Pid = pid()</v>
@@ -510,8 +510,8 @@
     </func>
 
     <func>
-      <name>nlist(Pid) -> </name>
-      <name>nlist(Pid, Pathname) -> {ok, Listing} | {error, Reason}</name>
+      <name since="">nlist(Pid) -> </name>
+      <name since="">nlist(Pid, Pathname) -> {ok, Listing} | {error, Reason}</name>
       <fsummary>List of files.</fsummary>
       <type>
         <v>Pid = pid()</v>
@@ -535,8 +535,8 @@
     </func>
 
     <func>
-      <name>open(Host) -> {ok, Pid} | {error, Reason}</name>
-      <name>open(Host, Opts) -> {ok, Pid} | {error, Reason}</name>
+      <name since="">open(Host) -> {ok, Pid} | {error, Reason}</name>
+      <name since="">open(Host, Opts) -> {ok, Pid} | {error, Reason}</name>
       <fsummary>Starts a standalone FTP client.</fsummary>
       <type>
 	<v>Host = string() | ip_address()</v>
@@ -550,7 +550,7 @@
 	<v>ipfamily() = inet | inet6 | inet6fb4 (default is inet)</v>
 	<v>port() = integer() > 0 (default is 21)</v>
 	<v>mode() = active | passive (default is passive)</v>
-	<v>tls_options() = [<seealso marker="ssl:ssl#type-ssloption">ssl:ssloption()</seealso>]</v>
+	<v>tls_options() = [<seealso marker="ssl:ssl#type-tls_option">ssl:tls_option()</seealso>]</v>
 	<v>sock_opts() = [<seealso marker="kernel:gen_tcp#type-option">gen_tcp:option()</seealso> except for ipv6_v6only, active, packet, mode, packet_size and header</v>
 	<v>timeout() = integer() > 0 (default is 60000 milliseconds)</v>
 	<v>dtimeout() = integer() > 0 | infinity (default is infinity)</v>
@@ -587,7 +587,7 @@
     </func>
 
     <func>
-      <name>pwd(Pid) -> {ok, Dir} | {error, Reason}</name>
+      <name since="">pwd(Pid) -> {ok, Dir} | {error, Reason}</name>
       <fsummary>Gets the remote current working directory.</fsummary>
       <type>
         <v>Pid = pid()</v>
@@ -603,8 +603,8 @@
     </func>
 
     <func>
-      <name>recv(Pid, RemoteFile) -> </name>
-      <name>recv(Pid, RemoteFile, LocalFile) -> ok | {error, Reason}</name>
+      <name since="">recv(Pid, RemoteFile) -> </name>
+      <name since="">recv(Pid, RemoteFile, LocalFile) -> ok | {error, Reason}</name>
       <fsummary>Transfers a file from remote server.</fsummary>
       <type>
         <v>Pid = pid()</v>
@@ -627,7 +627,7 @@
     </func>
 
     <func>
-      <name>recv_bin(Pid, RemoteFile) -> {ok, Bin} | {error, Reason}</name>
+      <name since="">recv_bin(Pid, RemoteFile) -> {ok, Bin} | {error, Reason}</name>
       <fsummary>Transfers a file from remote server as a binary.</fsummary>
       <type>
         <v>Pid = pid()</v>
@@ -644,7 +644,7 @@
     </func>
 
     <func>
-      <name>recv_chunk_start(Pid, RemoteFile) -> ok | {error, Reason}</name>
+      <name since="">recv_chunk_start(Pid, RemoteFile) -> ok | {error, Reason}</name>
       <fsummary>Starts chunk-reading of the remote file.</fsummary>
       <type>
         <v>Pid = pid()</v>
@@ -660,7 +660,7 @@
     </func>
 
     <func>
-      <name>recv_chunk(Pid) -> ok | {ok, Bin} | {error, Reason}</name>
+      <name since="">recv_chunk(Pid) -> ok | {ok, Bin} | {error, Reason}</name>
       <fsummary>Receives a chunk of the remote file.</fsummary>
       <type>
         <v>Pid = pid()</v>
@@ -682,7 +682,7 @@
     </func>
 
     <func>
-      <name>rename(Pid, Old, New) -> ok | {error, Reason}</name>
+      <name since="">rename(Pid, Old, New) -> ok | {error, Reason}</name>
       <fsummary>Renames a file at the remote server.</fsummary>
       <type>
         <v>Pid = pid()</v>
@@ -697,7 +697,7 @@
     </func>
 
     <func>
-      <name>rmdir(Pid, Dir) -> ok | {error, Reason}</name>
+      <name since="">rmdir(Pid, Dir) -> ok | {error, Reason}</name>
       <fsummary>Removes a remote directory.</fsummary>
       <type>
         <v>Pid = pid()</v>
@@ -714,8 +714,8 @@
     </func>
 
     <func>
-      <name>send(Pid, LocalFile) -></name>
-      <name>send(Pid, LocalFile, RemoteFile) -> ok | {error, Reason}</name>
+      <name since="">send(Pid, LocalFile) -></name>
+      <name since="">send(Pid, LocalFile, RemoteFile) -> ok | {error, Reason}</name>
       <fsummary>Transfers a file to the remote server.</fsummary>
       <type>
         <v>Pid = pid()</v>
@@ -732,7 +732,7 @@
     </func>
 
     <func>
-      <name>send_bin(Pid, Bin, RemoteFile) -> ok | {error, Reason}</name>
+      <name since="">send_bin(Pid, Bin, RemoteFile) -> ok | {error, Reason}</name>
       <fsummary>Transfers a binary into a remote file.</fsummary>
       <type>
         <v>Pid = pid()</v>
@@ -749,7 +749,7 @@
     </func>
 
     <func>
-      <name>send_chunk(Pid, Bin) -> ok | {error, Reason}</name>
+      <name since="">send_chunk(Pid, Bin) -> ok | {error, Reason}</name>
       <fsummary>Writes a chunk to the remote file.</fsummary>
       <type>
         <v>Pid = pid()</v>
@@ -769,7 +769,7 @@
     </func>
 
     <func>
-      <name>send_chunk_start(Pid, File) -> ok | {error, Reason}</name>
+      <name since="">send_chunk_start(Pid, File) -> ok | {error, Reason}</name>
       <fsummary>Starts transfer of file chunks.</fsummary>
       <type>
         <v>Pid = pid()</v>
@@ -785,7 +785,7 @@
     </func>
 
     <func>
-      <name>send_chunk_end(Pid) -> ok | {error, Reason}</name>
+      <name since="">send_chunk_end(Pid) -> ok | {error, Reason}</name>
       <fsummary>Stops transfer of chunks.</fsummary>
       <type>
         <v>Pid = pid()</v>
@@ -801,7 +801,7 @@
     </func>
 
     <func>
-      <name>start_service(ServiceConfig) -> {ok, Pid} | {error, Reason}</name>
+      <name since="OTP 21.0">start_service(ServiceConfig) -> {ok, Pid} | {error, Reason}</name>
       <fsummary>Dynamically starts an <c>FTP</c>
       session after the <c>ftp</c> application has been started.</fsummary>
       <type>
@@ -820,7 +820,7 @@
     </func>
 
     <func>
-      <name>stop_service(Reference) -> ok | {error, Reason} </name>
+      <name since="OTP 21.0">stop_service(Reference) -> ok | {error, Reason} </name>
       <fsummary>Stops an FTP session.</fsummary>
       <type>
 	<v>Reference = pid() | term() - service-specified reference</v>
@@ -832,7 +832,7 @@
     </func>
 
     <func>
-      <name>type(Pid, Type) -> ok | {error, Reason}</name>
+      <name since="">type(Pid, Type) -> ok | {error, Reason}</name>
       <fsummary>Sets transfer type to <c>ascii</c>or <c>binary</c>.</fsummary>
       <type>
         <v>Pid = pid()</v>
@@ -849,7 +849,7 @@
     </func>
 
     <func>
-      <name>user(Pid, User, Password) -> ok | {error, Reason}</name>
+      <name since="">user(Pid, User, Password) -> ok | {error, Reason}</name>
       <fsummary>User login.</fsummary>
       <type>
         <v>Pid = pid()</v>
@@ -864,7 +864,7 @@
     </func>
 
     <func>
-      <name>user(Pid, User, Password, Account) -> ok | {error, Reason}</name>
+      <name since="">user(Pid, User, Password, Account) -> ok | {error, Reason}</name>
       <fsummary>User login.</fsummary>
       <type>
         <v>Pid = pid()</v>
@@ -880,7 +880,7 @@
     </func>
 
     <func>
-      <name>quote(Pid, Command) -> [FTPLine]</name>
+      <name since="">quote(Pid, Command) -> [FTPLine]</name>
       <fsummary>Sends an arbitrary FTP command.</fsummary>
       <type>
         <v>Pid = pid()</v>
diff --git a/lib/ftp/doc/src/notes.xml b/lib/ftp/doc/src/notes.xml
index 01c1f88cf1..61da079900 100644
--- a/lib/ftp/doc/src/notes.xml
+++ b/lib/ftp/doc/src/notes.xml
@@ -33,7 +33,23 @@
     <file>notes.xml</file>
   </header>
   
-  <section><title>Ftp 1.0.1</title>
+  <section><title>Ftp 1.0.2</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Fixed timing related bug that could make ftp functions
+	    behave badly.</p>
+          <p>
+	    Own Id: OTP-15659 Aux Id: ERIERL-316 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>Ftp 1.0.1</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
       <list>
diff --git a/lib/ftp/src/ftp.erl b/lib/ftp/src/ftp.erl
index 40f6b53fa3..18cd8c7524 100644
--- a/lib/ftp/src/ftp.erl
+++ b/lib/ftp/src/ftp.erl
@@ -1065,9 +1065,9 @@ handle_call({_, {open, ip_comm, Opts, {CtrlOpts, DataPassOpts, DataActOpts}}}, F
 	    end
     end;	
 
-handle_call({_, {open, tls_upgrade, TLSOptions}}, From, State) ->
-    _ = send_ctrl_message(State, mk_cmd("AUTH TLS", [])), 
-    activate_ctrl_connection(State),
+handle_call({_, {open, tls_upgrade, TLSOptions}}, From, State0) ->
+    _ = send_ctrl_message(State0, mk_cmd("AUTH TLS", [])), 
+    State = activate_ctrl_connection(State0),
     {noreply, State#state{client = From, caller = open, tls_options = TLSOptions}};
 
 handle_call({_, {user, User, Password}}, From, 
@@ -1081,17 +1081,17 @@ handle_call({_, {user, User, Password, Acc}}, From,
 handle_call({_, {account, Acc}}, From, State)->
     handle_user_account(Acc, State#state{client = From});
 
-handle_call({_, pwd}, From, #state{chunk = false} = State) ->
-    _ = send_ctrl_message(State, mk_cmd("PWD", [])), 
-    activate_ctrl_connection(State),
+handle_call({_, pwd}, From, #state{chunk = false} = State0) ->
+    _ = send_ctrl_message(State0, mk_cmd("PWD", [])), 
+    State = activate_ctrl_connection(State0),
     {noreply, State#state{client = From, caller = pwd}};
 
 handle_call({_, lpwd}, From,  #state{ldir = LDir} = State) ->
     {reply, {ok, LDir}, State#state{client = From}};
 
-handle_call({_, {cd, Dir}}, From,  #state{chunk = false} = State) ->
-    _ = send_ctrl_message(State, mk_cmd("CWD ~s", [Dir])), 
-    activate_ctrl_connection(State),
+handle_call({_, {cd, Dir}}, From,  #state{chunk = false} = State0) ->
+    _ = send_ctrl_message(State0, mk_cmd("CWD ~s", [Dir])), 
+    State = activate_ctrl_connection(State0),
     {noreply, State#state{client = From, caller = cd}};
 
 handle_call({_,{lcd, Dir}}, _From, #state{ldir = LDir0} = State) ->
@@ -1108,41 +1108,41 @@ handle_call({_, {dir, Len, Dir}}, {_Pid, _} = From,
     setup_data_connection(State#state{caller = {dir, Dir, Len},
 				      client = From});
 handle_call({_, {rename, CurrFile, NewFile}}, From,
-	    #state{chunk = false} = State) ->
-    _ = send_ctrl_message(State, mk_cmd("RNFR ~s", [CurrFile])),
-    activate_ctrl_connection(State),
+	    #state{chunk = false} = State0) ->
+    _ = send_ctrl_message(State0, mk_cmd("RNFR ~s", [CurrFile])),
+    State = activate_ctrl_connection(State0),
     {noreply, State#state{caller = {rename, NewFile}, client = From}};
 
 handle_call({_, {delete, File}}, {_Pid, _} = From, 
-	    #state{chunk = false} = State) ->
-    _ = send_ctrl_message(State, mk_cmd("DELE ~s", [File])),
-    activate_ctrl_connection(State),
+	    #state{chunk = false} = State0) ->
+    _ = send_ctrl_message(State0, mk_cmd("DELE ~s", [File])),
+    State = activate_ctrl_connection(State0),
     {noreply, State#state{client = From}};
 
-handle_call({_, {mkdir, Dir}}, From,  #state{chunk = false} = State) ->
-    _ = send_ctrl_message(State, mk_cmd("MKD ~s", [Dir])),
-    activate_ctrl_connection(State),
+handle_call({_, {mkdir, Dir}}, From,  #state{chunk = false} = State0) ->
+    _ = send_ctrl_message(State0, mk_cmd("MKD ~s", [Dir])),
+    State = activate_ctrl_connection(State0),
     {noreply, State#state{client = From}};
 
-handle_call({_,{rmdir, Dir}}, From, #state{chunk = false} = State) ->
-    _ = send_ctrl_message(State, mk_cmd("RMD ~s", [Dir])),
-    activate_ctrl_connection(State),
+handle_call({_,{rmdir, Dir}}, From, #state{chunk = false} = State0) ->
+    _ = send_ctrl_message(State0, mk_cmd("RMD ~s", [Dir])),
+    State = activate_ctrl_connection(State0),
     {noreply, State#state{client = From}};
 
-handle_call({_,{type, Type}}, From, #state{chunk = false} = State) ->  
+handle_call({_,{type, Type}}, From, #state{chunk = false} = State0) ->  
     case Type of
 	ascii ->
-	    _ = send_ctrl_message(State, mk_cmd("TYPE A", [])),
-	    activate_ctrl_connection(State),
+	    _ = send_ctrl_message(State0, mk_cmd("TYPE A", [])),
+	    State = activate_ctrl_connection(State0),
 	    {noreply, State#state{caller = type, type = ascii, 
 				  client = From}};
 	binary ->
-	    _ = send_ctrl_message(State, mk_cmd("TYPE I", [])),
-	    activate_ctrl_connection(State),
+	    _ = send_ctrl_message(State0, mk_cmd("TYPE I", [])),
+	    State = activate_ctrl_connection(State0),
 	    {noreply, State#state{caller = type, type = binary, 
 				  client = From}};
 	_ ->
-	    {reply, {error, etype}, State}
+	    {reply, {error, etype}, State0}
     end;
 
 handle_call({_,{recv, RemoteFile, LocalFile}}, From, 
@@ -1181,8 +1181,8 @@ handle_call({_, recv_chunk}, _From, #state{chunk = true,
                                           } = State0) ->
     %% The ftp:recv_chunk call was the last event we waited for, finnish and clean up
     ?DBG("recv_chunk_closing ftp:recv_chunk, last event",[]),
-    activate_ctrl_connection(State0),
-    {reply, ok, State0#state{caller = undefined,
+    State = activate_ctrl_connection(State0),
+    {reply, ok, State#state{caller = undefined,
                              chunk = false,
                              client = undefined}};
     
@@ -1238,18 +1238,18 @@ handle_call({_, {transfer_chunk, Bin}}, _, #state{chunk = true} = State) ->
 handle_call({_, {transfer_chunk, _}}, _, #state{chunk = false} = State) ->
     {reply, {error, echunk}, State};
 
-handle_call({_, chunk_end}, From, #state{chunk = true} = State) ->
-    close_data_connection(State),
-    activate_ctrl_connection(State),
+handle_call({_, chunk_end}, From, #state{chunk = true} = State0) ->
+    close_data_connection(State0),
+    State = activate_ctrl_connection(State0),
     {noreply, State#state{client = From, dsock = undefined, 
 			  caller = end_chunk_transfer, chunk = false}};
 
 handle_call({_, chunk_end}, _, #state{chunk = false} = State) ->
     {reply, {error, echunk}, State};
 
-handle_call({_, {quote, Cmd}}, From, #state{chunk = false} = State) ->
-    _ = send_ctrl_message(State, mk_cmd(Cmd, [])),
-    activate_ctrl_connection(State),
+handle_call({_, {quote, Cmd}}, From, #state{chunk = false} = State0) ->
+    _ = send_ctrl_message(State0, mk_cmd(Cmd, [])),
+    State = activate_ctrl_connection(State0),
     {noreply, State#state{client = From, caller = quote}};
 
 handle_call({_, _Req}, _From, #state{csock = CSock} = State) 
@@ -1325,38 +1325,38 @@ handle_info({Trpt, Socket, Data}, #state{dsock = {Trpt,Socket}} = State0) when T
 				  Data/binary>>}};
 
 handle_info({Cls, Socket}, #state{dsock = {Trpt,Socket},
-				  caller = {recv_file, Fd}} = State)
+				  caller = {recv_file, Fd}} = State0)
   when {Cls,Trpt}=={tcp_closed,tcp} ; {Cls,Trpt}=={ssl_closed,ssl} ->
     file_close(Fd),
-    progress_report({transfer_size, 0}, State),
-    activate_ctrl_connection(State),
+    progress_report({transfer_size, 0}, State0),
+    State = activate_ctrl_connection(State0),
     ?DBG("Data channel close",[]),
     {noreply, State#state{dsock = undefined, data = <<>>}};
 
 handle_info({Cls, Socket}, #state{dsock = {Trpt,Socket},
                                   client = Client,
-				  caller = recv_chunk} = State)
+				  caller = recv_chunk} = State0)
   when {Cls,Trpt}=={tcp_closed,tcp} ; {Cls,Trpt}=={ssl_closed,ssl} ->
     ?DBG("Data channel close recv_chunk",[]),
-    activate_ctrl_connection(State),
+    State = activate_ctrl_connection(State0),
     {noreply, State#state{dsock = undefined,
                           caller = #recv_chunk_closing{dconn_closed     =  true,
                                                        client_called_us =  Client =/= undefined}
                          }};
 
 handle_info({Cls, Socket}, #state{dsock = {Trpt,Socket}, caller = recv_bin, 
-					 data = Data} = State)
+					 data = Data} = State0)
   when {Cls,Trpt}=={tcp_closed,tcp} ; {Cls,Trpt}=={ssl_closed,ssl} ->
     ?DBG("Data channel close",[]),
-    activate_ctrl_connection(State),
+    State = activate_ctrl_connection(State0),
     {noreply, State#state{dsock = undefined, data = <<>>, 
 			  caller = {recv_bin, Data}}};
 
 handle_info({Cls, Socket}, #state{dsock = {Trpt,Socket}, data = Data,
-					 caller = {handle_dir_result, Dir}} 
-	    = State) when {Cls,Trpt}=={tcp_closed,tcp} ; {Cls,Trpt}=={ssl_closed,ssl} ->
+                                  caller = {handle_dir_result, Dir}} 
+	    = State0) when {Cls,Trpt}=={tcp_closed,tcp} ; {Cls,Trpt}=={ssl_closed,ssl} ->
     ?DBG("Data channel close",[]),
-    activate_ctrl_connection(State),
+    State = activate_ctrl_connection(State0),
     {noreply, State#state{dsock = undefined, 
 			  caller = {handle_dir_result, Dir, Data},
 %			  data = <<?CR,?LF>>}};
@@ -1377,7 +1377,7 @@ handle_info({Transport, Socket, Data}, #state{csock = {Transport, Socket},
 					      client = From,
 					      ctrl_data = {CtrlData, AccLines, 
 							   LineStatus}} 
-	    = State) ->    
+	    = State0) ->    
     ?DBG('--ctrl ~p ----> ~s~p~n',[Socket,<<CtrlData/binary, Data/binary>>,State]),
     case ftp_response:parse_lines(<<CtrlData/binary, Data/binary>>, 
 				  AccLines, LineStatus) of
@@ -1387,21 +1387,21 @@ handle_info({Transport, Socket, Data}, #state{csock = {Transport, Socket},
 	    case Caller of
 		quote ->
 		    gen_server:reply(From, string:tokens(Lines, [?CR, ?LF])),
-		    {noreply, State#state{client = undefined, 
-					  caller = undefined,
-					  latest_ctrl_response = Lines,
-					  ctrl_data = {NextMsgData, [], 
-						       start}}};
+		    {noreply, State0#state{client = undefined, 
+                                           caller = undefined,
+                                           latest_ctrl_response = Lines,
+                                           ctrl_data = {NextMsgData, [], 
+                                                        start}}};
 		_ ->
 		    ?DBG('   ...handle_ctrl_result(~p,...) ctrl_data=~p~n',[CtrlResult,{NextMsgData, [], start}]),
 		    handle_ctrl_result(CtrlResult,
-				       State#state{latest_ctrl_response = Lines,
-						   ctrl_data = 
-						       {NextMsgData, [], start}})
+				       State0#state{latest_ctrl_response = Lines,
+                                                    ctrl_data = 
+                                                        {NextMsgData, [], start}})
 	    end;
 	{continue, NewCtrlData} ->
 	    ?DBG('   ...Continue... ctrl_data=~p~n',[NewCtrlData]),
-	    activate_ctrl_connection(State),
+	    State = activate_ctrl_connection(State0),
 	    {noreply, State#state{ctrl_data = NewCtrlData}}
     end;
 
@@ -1567,19 +1567,19 @@ start_link(Opts, GenServerOptions) ->
 %%% Help functions to handle_call and/or handle_ctrl_result
 %%--------------------------------------------------------------------------
 %% User handling 
-handle_user(User, Password, Acc, State) ->
-    _ = send_ctrl_message(State, mk_cmd("USER ~s", [User])),
-    activate_ctrl_connection(State),
+handle_user(User, Password, Acc, State0) ->
+    _ = send_ctrl_message(State0, mk_cmd("USER ~s", [User])),
+    State = activate_ctrl_connection(State0),
     {noreply, State#state{caller = {handle_user, Password, Acc}}}.
 
-handle_user_passwd(Password, Acc, State) ->
-    _ = send_ctrl_message(State, mk_cmd("PASS ~s", [Password])),
-    activate_ctrl_connection(State),
+handle_user_passwd(Password, Acc, State0) ->
+    _ = send_ctrl_message(State0, mk_cmd("PASS ~s", [Password])),
+    State = activate_ctrl_connection(State0),
     {noreply, State#state{caller = {handle_user_passwd, Acc}}}.
 
-handle_user_account(Acc, State) ->
-    _ = send_ctrl_message(State, mk_cmd("ACCT ~s", [Acc])),
-    activate_ctrl_connection(State),
+handle_user_account(Acc, State0) ->
+    _ = send_ctrl_message(State0, mk_cmd("ACCT ~s", [Acc])),
+    State = activate_ctrl_connection(State0),
     {noreply, State#state{caller = handle_user_account}}.
 
 
@@ -1594,9 +1594,9 @@ handle_ctrl_result({tls_upgrade, _}, #state{csock = {tcp, Socket},
     ?DBG('<--ctrl ssl:connect(~p, ~p)~n~p~n',[Socket,TLSOptions,State0]),
     case ssl:connect(Socket, TLSOptions, Timeout) of
 	{ok, TLSSocket} ->
-	    State = State0#state{csock = {ssl,TLSSocket}},
-	    _ = send_ctrl_message(State, mk_cmd("PBSZ 0", [])),
-	    activate_ctrl_connection(State),
+	    State1 = State0#state{csock = {ssl,TLSSocket}},
+	    _ = send_ctrl_message(State1, mk_cmd("PBSZ 0", [])),
+	    State = activate_ctrl_connection(State1),
 	    {noreply, State#state{tls_upgrading_data_connection = {true, pbsz}} };
 	{error, _} = Error ->
 	    gen_server:reply(From,  {Error, self()}),
@@ -1605,9 +1605,9 @@ handle_ctrl_result({tls_upgrade, _}, #state{csock = {tcp, Socket},
 					tls_upgrading_data_connection = false}}
     end;	
 
-handle_ctrl_result({pos_compl, _}, #state{tls_upgrading_data_connection = {true, pbsz}} = State) ->
-    _ = send_ctrl_message(State, mk_cmd("PROT P", [])),
-    activate_ctrl_connection(State),
+handle_ctrl_result({pos_compl, _}, #state{tls_upgrading_data_connection = {true, pbsz}} = State0) ->
+    _ = send_ctrl_message(State0, mk_cmd("PROT P", [])),
+    State = activate_ctrl_connection(State0),
     {noreply, State#state{tls_upgrading_data_connection = {true, prot}}};
 
 handle_ctrl_result({pos_compl, _}, #state{tls_upgrading_data_connection = {true, prot},
@@ -1801,10 +1801,10 @@ handle_ctrl_result({pos_compl, _}, #state{caller = {handle_dir_result, Dir,
 
 handle_ctrl_result({pos_compl, Lines}, 
 		   #state{caller = {handle_dir_data, Dir, DirData}} = 
-		   State) ->
+		   State0) ->
     OldDir = pwd_result(Lines),    
-    _ = send_ctrl_message(State, mk_cmd("CWD ~s", [Dir])),
-    activate_ctrl_connection(State),
+    _ = send_ctrl_message(State0, mk_cmd("CWD ~s", [Dir])),
+    State = activate_ctrl_connection(State0),
     {noreply, State#state{caller = {handle_dir_data_second_phase, OldDir,
 				    DirData}}};
 handle_ctrl_result({Status, _},
@@ -1818,9 +1818,9 @@ handle_ctrl_result(S={_Status, _},
 
 handle_ctrl_result({pos_compl, _},
 		   #state{caller = {handle_dir_data_second_phase, OldDir, 
-				    DirData}} = State) ->
-    _ = send_ctrl_message(State, mk_cmd("CWD ~s", [OldDir])),
-    activate_ctrl_connection(State),
+				    DirData}} = State0) ->
+    _ = send_ctrl_message(State0, mk_cmd("CWD ~s", [OldDir])),
+    State = activate_ctrl_connection(State0),
     {noreply, State#state{caller = {handle_dir_data_third_phase, DirData}}};
 handle_ctrl_result({Status, _}, 
 		   #state{caller = {handle_dir_data_second_phase, _, _}} 
@@ -1840,9 +1840,9 @@ handle_ctrl_result(Status={epath, _}, #state{caller = {dir,_}} = State) ->
 %%--------------------------------------------------------------------------
 %% File renaming
 handle_ctrl_result({pos_interm, _}, #state{caller = {rename, NewFile}} 
-		   = State) ->
-    _ = send_ctrl_message(State, mk_cmd("RNTO ~s", [NewFile])),
-    activate_ctrl_connection(State),
+		   = State0) ->
+    _ = send_ctrl_message(State0, mk_cmd("RNTO ~s", [NewFile])),
+    State = activate_ctrl_connection(State0),
     {noreply, State#state{caller = rename_second_phase}}; 
 
 handle_ctrl_result({Status, _}, 
@@ -1916,10 +1916,10 @@ handle_ctrl_result({pos_compl, _}, #state{client = From,
     %% The pos_compl was the last event we waited for, finnish and clean up
     ?DBG("recv_chunk_closing pos_compl, last event",[]),
     gen_server:reply(From, ok),
-    activate_ctrl_connection(State0),
-    {noreply, State0#state{caller = undefined,
-                           chunk = false,
-                           client = undefined}};
+    State = activate_ctrl_connection(State0),
+    {noreply, State#state{caller = undefined,
+                          chunk = false,
+                          client = undefined}};
 
 handle_ctrl_result({pos_compl, _}, #state{caller = #recv_chunk_closing{}=R}
 		   = State0) ->
@@ -2013,71 +2013,71 @@ ctrl_result_response(_, #state{client = From} = State, ErrorMsg) ->
     {noreply, State#state{client = undefined, caller = undefined}}.
 
 %%--------------------------------------------------------------------------
-handle_caller(#state{caller = {dir, Dir, Len}} = State) ->
+handle_caller(#state{caller = {dir, Dir, Len}} = State0) ->
     Cmd = case Len of
 	      short -> "NLST";
 	      long -> "LIST"
 	  end,
     _ = case Dir of
             "" ->
-                send_ctrl_message(State, mk_cmd(Cmd, ""));
+                send_ctrl_message(State0, mk_cmd(Cmd, ""));
             _ ->
-                send_ctrl_message(State, mk_cmd(Cmd ++ " ~s", [Dir]))
+                send_ctrl_message(State0, mk_cmd(Cmd ++ " ~s", [Dir]))
         end,
-    activate_ctrl_connection(State),
+    State = activate_ctrl_connection(State0),
     {noreply, State#state{caller = {dir, Dir}}};
      
-handle_caller(#state{caller = {recv_bin, RemoteFile}} = State) ->
-    _ = send_ctrl_message(State, mk_cmd("RETR ~s", [RemoteFile])),
-    activate_ctrl_connection(State),
+handle_caller(#state{caller = {recv_bin, RemoteFile}} = State0) ->
+    _ = send_ctrl_message(State0, mk_cmd("RETR ~s", [RemoteFile])),
+    State = activate_ctrl_connection(State0),
     {noreply, State#state{caller = recv_bin}};
 
 handle_caller(#state{caller = {start_chunk_transfer, Cmd, RemoteFile}} = 
-	      State) ->
-    _ = send_ctrl_message(State, mk_cmd("~s ~s", [Cmd, RemoteFile])),
-    activate_ctrl_connection(State),
+	      State0) ->
+    _ = send_ctrl_message(State0, mk_cmd("~s ~s", [Cmd, RemoteFile])),
+    State = activate_ctrl_connection(State0),
     {noreply, State#state{caller = start_chunk_transfer}};
 
-handle_caller(#state{caller = {recv_file, RemoteFile, Fd}} = State) ->
-    _ = send_ctrl_message(State, mk_cmd("RETR ~s", [RemoteFile])), 
-    activate_ctrl_connection(State),
+handle_caller(#state{caller = {recv_file, RemoteFile, Fd}} = State0) ->
+    _ = send_ctrl_message(State0, mk_cmd("RETR ~s", [RemoteFile])), 
+    State = activate_ctrl_connection(State0),
     {noreply, State#state{caller = {recv_file, Fd}}};
 
 handle_caller(#state{caller = {transfer_file, {Cmd, LocalFile, RemoteFile}},
-		     ldir = LocalDir, client = From} = State) ->
+		     ldir = LocalDir, client = From} = State0) ->
     case file_open(filename:absname(LocalFile, LocalDir), read) of
 	{ok, Fd} ->
-	    _ = send_ctrl_message(State, mk_cmd("~s ~s", [Cmd, RemoteFile])),
-	    activate_ctrl_connection(State),
+	    _ = send_ctrl_message(State0, mk_cmd("~s ~s", [Cmd, RemoteFile])),
+	    State = activate_ctrl_connection(State0),
 	    {noreply, State#state{caller = {transfer_file, Fd}}};
 	{error, _} ->
 	    gen_server:reply(From, {error, epath}),
-	    {noreply, State#state{client = undefined, caller = undefined,
-				  dsock = undefined}} 
+	    {noreply, State0#state{client = undefined, caller = undefined,
+                                   dsock = undefined}} 
     end;
 
 handle_caller(#state{caller = {transfer_data, {Cmd, Bin, RemoteFile}}} = 
-	      State) ->
-    _ = send_ctrl_message(State, mk_cmd("~s ~s", [Cmd, RemoteFile])),
-    activate_ctrl_connection(State),
+	      State0) ->
+    _ = send_ctrl_message(State0, mk_cmd("~s ~s", [Cmd, RemoteFile])),
+    State = activate_ctrl_connection(State0),
     {noreply, State#state{caller = {transfer_data, Bin}}}.
 
 %%  ----------- FTP SERVER COMMUNICATION  ------------------------- 
 
 %% Connect to FTP server at Host (default is TCP port 21) 
 %% in order to establish a control connection.
-setup_ctrl_connection(Host, Port, Timeout, #state{sockopts_ctrl = SockOpts} = State) ->
+setup_ctrl_connection(Host, Port, Timeout, #state{sockopts_ctrl = SockOpts} = State0) ->
     MsTime = erlang:monotonic_time(),
-    case connect(Host, Port, SockOpts, Timeout, State) of
+    case connect(Host, Port, SockOpts, Timeout, State0) of
 	{ok, IpFam, CSock} ->
-	    NewState = State#state{csock = {tcp, CSock}, ipfamily = IpFam},
-	    activate_ctrl_connection(NewState),
+	    State1 = State0#state{csock = {tcp, CSock}, ipfamily = IpFam},
+	    State = activate_ctrl_connection(State1),
 	    case Timeout - millisec_passed(MsTime) of
 		Timeout2 when (Timeout2 >= 0) ->
-		    {ok, NewState#state{caller = open}, Timeout2};
+		    {ok, State#state{caller = open}, Timeout2};
 		_ ->
                     %% Oups: Simulate timeout
-		    {ok, NewState#state{caller = open}, 0}
+		    {ok, State#state{caller = open}, 0}
 	    end;
 	Error ->
 	    Error
@@ -2087,7 +2087,7 @@ setup_data_connection(#state{mode   = active,
 			     caller = Caller, 
 			     csock  = CSock,
                              sockopts_data_active = SockOpts,
-			     ftp_extension = FtpExt} = State) ->    
+			     ftp_extension = FtpExt} = State0) ->    
     case (catch sockname(CSock)) of
 	{ok, {{_, _, _, _, _, _, _, _} = IP0, _}} ->
             IP = proplists:get_value(ip, SockOpts, IP0),
@@ -2098,8 +2098,8 @@ setup_data_connection(#state{mode   = active,
 	    {ok, {_, Port}} = sockname({tcp,LSock}),
 	    IpAddress = inet_parse:ntoa(IP),
 	    Cmd = mk_cmd("EPRT |2|~s|~p|", [IpAddress, Port]),
-	    _ = send_ctrl_message(State, Cmd),
-	    activate_ctrl_connection(State),  
+	    _ = send_ctrl_message(State0, Cmd),
+	    State = activate_ctrl_connection(State0),  
 	    {noreply, State#state{caller = {setup_data_connection, 
 					    {LSock, Caller}}}};
 	{ok, {{_,_,_,_} = IP0, _}} ->
@@ -2112,37 +2112,37 @@ setup_data_connection(#state{mode   = active,
                     false ->
                         {IP1, IP2, IP3, IP4} = IP,
                         {Port1, Port2} = {Port div 256, Port rem 256},
-                        send_ctrl_message(State,
+                        send_ctrl_message(State0,
                                           mk_cmd("PORT ~w,~w,~w,~w,~w,~w",
                                                  [IP1, IP2, IP3, IP4, Port1, Port2]));
                     true ->
                         IpAddress = inet_parse:ntoa(IP),
                         Cmd = mk_cmd("EPRT |1|~s|~p|", [IpAddress, Port]),
-                        send_ctrl_message(State, Cmd)
+                        send_ctrl_message(State0, Cmd)
                 end,
-	    activate_ctrl_connection(State),
+	    State = activate_ctrl_connection(State0),
 	    {noreply, State#state{caller = {setup_data_connection, 
 					    {LSock, Caller}}}}
     end;
 
 setup_data_connection(#state{mode = passive, ipfamily = inet6,
-			     caller = Caller} = State) ->
-    _ = send_ctrl_message(State, mk_cmd("EPSV", [])),
-    activate_ctrl_connection(State),
+			     caller = Caller} = State0) ->
+    _ = send_ctrl_message(State0, mk_cmd("EPSV", [])),
+    State = activate_ctrl_connection(State0),
     {noreply, State#state{caller = {setup_data_connection, Caller}}};
 
 setup_data_connection(#state{mode = passive, ipfamily = inet,
 			     caller = Caller,
-			     ftp_extension = false} = State) ->
-    _ = send_ctrl_message(State, mk_cmd("PASV", [])),
-    activate_ctrl_connection(State),
+			     ftp_extension = false} = State0) ->
+    _ = send_ctrl_message(State0, mk_cmd("PASV", [])),
+    State = activate_ctrl_connection(State0),
     {noreply, State#state{caller = {setup_data_connection, Caller}}};    
 
 setup_data_connection(#state{mode = passive, ipfamily = inet,
 			     caller = Caller,
-			     ftp_extension = true} = State) ->
-    _ = send_ctrl_message(State, mk_cmd("EPSV", [])),
-    activate_ctrl_connection(State),
+			     ftp_extension = true} = State0) ->
+    _ = send_ctrl_message(State0, mk_cmd("EPSV", [])),
+    State = activate_ctrl_connection(State0),
     {noreply, State#state{caller = {setup_data_connection, Caller}}}.
 
 connect(Host, Port, SockOpts, Timeout, #state{ipfamily = inet = IpFam}) ->
@@ -2248,14 +2248,15 @@ send_message({tcp, Socket}, Message) ->
 send_message({ssl, Socket}, Message) ->
     ssl:send(Socket, Message).
 
-activate_ctrl_connection(#state{csock = CSock, ctrl_data = {<<>>, _, _}}) ->
-    activate_connection(CSock);
-activate_ctrl_connection(#state{csock = CSock}) ->
+activate_ctrl_connection(#state{csock = CSock, ctrl_data = {<<>>, _, _}} = State) ->
+    activate_connection(CSock),
+    State;
+activate_ctrl_connection(#state{csock = CSock} = State0) ->
     activate_connection(CSock),
     %% We have already received at least part of the next control message,
     %% that has been saved in ctrl_data, process this first.
-    self() ! {socket_type(CSock), unwrap_socket(CSock), <<>>},
-    ok.
+    {noreply, State} = handle_info({socket_type(CSock), unwrap_socket(CSock), <<>>}, State0),
+    State.
 
 activate_data_connection(#state{dsock = DSock} = State) ->
     activate_connection(DSock),
@@ -2290,22 +2291,22 @@ close_connection({ssl, Socket})  -> ignore_return_value( ssl:close(Socket) ).
 %%  ------------ FILE HANDLING  ----------------------------------------   
 send_file(#state{tls_upgrading_data_connection = {true, CTRL, _}} = State, Fd) ->
     {noreply, State#state{tls_upgrading_data_connection = {true, CTRL, ?MODULE, send_file, Fd}}};
-send_file(State, Fd) ->
+send_file(State0, Fd) ->
     case file_read(Fd) of
 	{ok, N, Bin} when N > 0 ->
-	    send_data_message(State, Bin),
-	    progress_report({binary, Bin}, State),
-	    send_file(State, Fd);
+	    send_data_message(State0, Bin),
+	    progress_report({binary, Bin}, State0),
+	    send_file(State0, Fd);
 	{ok, _, _} ->
 	    file_close(Fd),
-	    close_data_connection(State),
-	    progress_report({transfer_size, 0}, State),
-	    activate_ctrl_connection(State),
+	    close_data_connection(State0),
+	    progress_report({transfer_size, 0}, State0),
+	    State = activate_ctrl_connection(State0),
 	    {noreply, State#state{caller = transfer_file_second_phase,
 				  dsock = undefined}};
         {error, Reason} ->
-	    gen_server:reply(State#state.client, {error, Reason}),
-	    {stop, normal, State#state{client = undefined}}
+	    gen_server:reply(State0#state.client, {error, Reason}),
+	    {stop, normal, State0#state{client = undefined}}
     end.
 
 file_open(File, Option) ->
@@ -2347,10 +2348,10 @@ cast(GenServer, Msg) ->
 
 send_bin(#state{tls_upgrading_data_connection = {true, CTRL, _}} = State, Bin) ->
     State#state{tls_upgrading_data_connection = {true, CTRL, ?MODULE, send_bin, Bin}};
-send_bin(State, Bin) ->
-    send_data_message(State, Bin),
-    close_data_connection(State),
-    activate_ctrl_connection(State),
+send_bin(State0, Bin) ->
+    send_data_message(State0, Bin),
+    close_data_connection(State0),
+    State = activate_ctrl_connection(State0),
     {noreply, State#state{caller = transfer_data_second_phase,
 			  dsock = undefined}}.
 
diff --git a/lib/ftp/test/ftp_SUITE.erl b/lib/ftp/test/ftp_SUITE.erl
index 7c87d5cbdb..0b070ee8cb 100644
--- a/lib/ftp/test/ftp_SUITE.erl
+++ b/lib/ftp/test/ftp_SUITE.erl
@@ -96,6 +96,7 @@ ftp_tests()->
      recv_chunk, 
      recv_chunk_twice,
      recv_chunk_three_times,
+     recv_chunk_delay,
      type, 
      quote, 
      error_elogin,
@@ -669,9 +670,9 @@ recv_chunk(Config0) ->
     Contents = list_to_binary( lists:duplicate(1000, lists:seq(0,255)) ),
     Config = set_state([reset, {mkfile,File,Contents}], Config0),
     Pid = proplists:get_value(ftp, Config),
-    {{error, "ftp:recv_chunk_start/2 not called"},_} = recv_chunk(Pid, <<>>),
+    {error, "ftp:recv_chunk_start/2 not called"} = do_recv_chunk(Pid),
     ok = ftp:recv_chunk_start(Pid, id2ftp(File,Config)),
-    {ok, ReceivedContents, _Ncunks} = recv_chunk(Pid, <<>>),
+    {ok, ReceivedContents} = do_recv_chunk(Pid),
     find_diff(ReceivedContents, Contents).
 
 recv_chunk_twice() ->
@@ -683,11 +684,11 @@ recv_chunk_twice(Config0) ->
     Contents2 = crypto:strong_rand_bytes(1200),
     Config = set_state([reset, {mkfile,File1,Contents1}, {mkfile,File2,Contents2}], Config0),
     Pid = proplists:get_value(ftp, Config),
-    {{error, "ftp:recv_chunk_start/2 not called"},_} = recv_chunk(Pid, <<>>),
+    {error, "ftp:recv_chunk_start/2 not called"} = do_recv_chunk(Pid),
     ok = ftp:recv_chunk_start(Pid, id2ftp(File1,Config)),
-    {ok, ReceivedContents1, _Ncunks1} = recv_chunk(Pid, <<>>),
+    {ok, ReceivedContents1} = do_recv_chunk(Pid),
     ok = ftp:recv_chunk_start(Pid, id2ftp(File2,Config)),
-    {ok, ReceivedContents2, _Ncunks2} = recv_chunk(Pid, <<>>),
+    {ok, ReceivedContents2} = do_recv_chunk(Pid),
     find_diff(ReceivedContents1, Contents1),
     find_diff(ReceivedContents2, Contents2).
 
@@ -704,46 +705,56 @@ recv_chunk_three_times(Config0) ->
 
     Config = set_state([reset, {mkfile,File1,Contents1}, {mkfile,File2,Contents2}, {mkfile,File3,Contents3}], Config0),
     Pid = proplists:get_value(ftp, Config),
-    {{error, "ftp:recv_chunk_start/2 not called"},_} = recv_chunk(Pid, <<>>),
+    {error, "ftp:recv_chunk_start/2 not called"} = do_recv_chunk(Pid),
 
+    ok = ftp:recv_chunk_start(Pid, id2ftp(File3,Config)),
+    {ok, ReceivedContents3} = do_recv_chunk(Pid),
+    
     ok = ftp:recv_chunk_start(Pid, id2ftp(File1,Config)),
-    {ok, ReceivedContents1, Nchunks1} = recv_chunk(Pid, <<>>),
+    {ok, ReceivedContents1} = do_recv_chunk(Pid),
 
     ok = ftp:recv_chunk_start(Pid, id2ftp(File2,Config)),
-    {ok, ReceivedContents2, _Nchunks2} = recv_chunk(Pid, <<>>),
-
-    ok = ftp:recv_chunk_start(Pid, id2ftp(File3,Config)),
-    {ok, ReceivedContents3, _Nchunks3} = recv_chunk(Pid, <<>>, 10000, 0, Nchunks1),
+    {ok, ReceivedContents2} = do_recv_chunk(Pid),
 
     find_diff(ReceivedContents1, Contents1),
     find_diff(ReceivedContents2, Contents2),
     find_diff(ReceivedContents3, Contents3).
 
 
-
+do_recv_chunk(Pid) -> 
+    recv_chunk(Pid, <<>>).
 recv_chunk(Pid, Acc) -> 
-    recv_chunk(Pid, Acc, 0, 0, undefined).
-
-
-
-%% ExpectNchunks :: integer() | undefined
-recv_chunk(Pid, Acc, DelayMilliSec, N, ExpectNchunks) when N+1 < ExpectNchunks ->
-    %% for all I in integer(), I < undefined
-    recv_chunk1(Pid, Acc, DelayMilliSec, N, ExpectNchunks);
-
-recv_chunk(Pid, Acc, DelayMilliSec, N, ExpectNchunks) ->
-    %% N >= ExpectNchunks-1
-    timer:sleep(DelayMilliSec),
-    recv_chunk1(Pid, Acc, DelayMilliSec, N, ExpectNchunks).
+    case ftp:recv_chunk(Pid) of
+	ok -> 
+            {ok, Acc};
+	{ok, Bin} -> 
+            recv_chunk(Pid, <<Acc/binary, Bin/binary>>);
+	Error -> 
+            Error
+    end.
 
+recv_chunk_delay(Config0) when is_list(Config0) ->
+    File1 = "big_file1.txt",
+    Contents = list_to_binary(lists:duplicate(1000, lists:seq(0,255))),
+    Config = set_state([reset, {mkfile,File1,Contents}], Config0),
+    Pid = proplists:get_value(ftp, Config),
+    ok = ftp:recv_chunk_start(Pid, id2ftp(File1,Config)),
+    {ok, ReceivedContents} = delay_recv_chunk(Pid),
+    find_diff(ReceivedContents, Contents).
 
-recv_chunk1(Pid, Acc, DelayMilliSec, N, ExpectNchunks) ->
-    ct:log("Call ftp:recv_chunk",[]),
+delay_recv_chunk(Pid) -> 
+     delay_recv_chunk(Pid, <<>>).
+delay_recv_chunk(Pid, Acc) -> 
+    ct:pal("Recived size ~p", [byte_size(Acc)]),
     case ftp:recv_chunk(Pid) of
-	ok -> {ok, Acc, N};
-	{ok, Bin} -> recv_chunk(Pid, <<Acc/binary, Bin/binary>>, DelayMilliSec, N+1, ExpectNchunks);
-	Error -> {Error, N}
-    end.
+ 	ok -> 
+             {ok, Acc};
+ 	{ok, Bin} -> 
+            ct:sleep(100),
+            delay_recv_chunk(Pid, <<Acc/binary, Bin/binary>>);
+	Error -> 
+            Error
+     end.
 
 %%-------------------------------------------------------------------------
 type() -> 
diff --git a/lib/ftp/vsn.mk b/lib/ftp/vsn.mk
index d5d6c45b28..9f14658099 100644
--- a/lib/ftp/vsn.mk
+++ b/lib/ftp/vsn.mk
@@ -19,6 +19,6 @@
 # %CopyrightEnd%
 
 APPLICATION = ftp
-FTP_VSN   = 1.0.1
+FTP_VSN   = 1.0.2
 PRE_VSN     =
 APP_VSN     = "$(APPLICATION)-$(FTP_VSN)$(PRE_VSN)"
diff --git a/lib/hipe/cerl/Makefile b/lib/hipe/cerl/Makefile
index f653dce36f..5c367b5b77 100644
--- a/lib/hipe/cerl/Makefile
+++ b/lib/hipe/cerl/Makefile
@@ -66,7 +66,10 @@ DOC_FILES= $(MODULES:%=$(DOCS)/%.html)
 
 include ../native.mk
 
-ERL_COMPILE_FLAGS += +inline -Werror +warn_export_vars +warn_unused_import +warn_missing_spec #+warn_untyped_record
+ERL_COMPILE_FLAGS += +inline +warn_export_vars +warn_unused_import +warn_missing_spec #+warn_untyped_record
+ifneq ($(NATIVE_LIBS_ENABLED),yes)
+ERL_COMPILE_FLAGS += -Werror
+endif
 
 # ----------------------------------------------------
 # Targets
diff --git a/lib/hipe/cerl/erl_bif_types.erl b/lib/hipe/cerl/erl_bif_types.erl
index 48ce641ab9..8ae1cd4ab7 100644
--- a/lib/hipe/cerl/erl_bif_types.erl
+++ b/lib/hipe/cerl/erl_bif_types.erl
@@ -2225,10 +2225,7 @@ type_order() ->
    t_map(), t_list(), t_bitstr()].
 
 key_comparisons_fail(X0, KeyPos, TupleList, Opaques) ->
-  X = case t_is_number(t_inf(X0, t_number(), Opaques), Opaques) of
-	false -> X0;
-	true -> t_number()
-      end,
+  X = erl_types:t_widen_to_number(X0),
   lists:all(fun(Tuple) ->
 		Key = type(erlang, element, 2, [KeyPos, Tuple]),
 		t_is_none(t_inf(Key, X, Opaques))
diff --git a/lib/hipe/cerl/erl_types.erl b/lib/hipe/cerl/erl_types.erl
index 9abb4d31d9..d61cd8664c 100644
--- a/lib/hipe/cerl/erl_types.erl
+++ b/lib/hipe/cerl/erl_types.erl
@@ -66,7 +66,6 @@
 	 t_find_opaque_mismatch/3,
          t_find_unknown_opaque/3,
 	 t_fixnum/0,
-	 t_map/2,
 	 t_non_neg_fixnum/0,
 	 t_pos_fixnum/0,
 	 t_float/0,
@@ -205,6 +204,7 @@
 	 t_unopaque/1, t_unopaque/2,
 	 t_var/1,
 	 t_var_name/1,
+         t_widen_to_number/1,
 	 %% t_assign_variables_to_subtype/2,
 	 type_is_defined/4,
 	 record_field_diffs_to_string/2,
@@ -1594,6 +1594,50 @@ lift_list_to_pos_empty(?nil) -> ?nil;
 lift_list_to_pos_empty(?list(Content, Termination, _)) -> 
   ?list(Content, Termination, ?unknown_qual).
 
+-spec t_widen_to_number(erl_type()) -> erl_type().
+
+%% Widens integers and floats to t_number().
+%% Used by erl_bif_types:key_comparison_fail().
+
+t_widen_to_number(?any) -> ?any;
+t_widen_to_number(?none) -> ?none;
+t_widen_to_number(?unit) -> ?unit;
+t_widen_to_number(?atom(_Set) = T) -> T;
+t_widen_to_number(?bitstr(_Unit, _Base) = T) -> T;
+t_widen_to_number(?float) -> t_number();
+t_widen_to_number(?function(Domain, Range)) ->
+  ?function(t_widen_to_number(Domain), t_widen_to_number(Range));
+t_widen_to_number(?identifier(_Types) = T) -> T;
+t_widen_to_number(?int_range(_From, _To)) -> t_number();
+t_widen_to_number(?int_set(_Set)) -> t_number();
+t_widen_to_number(?integer(_Types)) -> t_number();
+t_widen_to_number(?list(Type, Tail, Size)) ->
+  ?list(t_widen_to_number(Type), t_widen_to_number(Tail), Size);
+t_widen_to_number(?map(Pairs, DefK, DefV)) ->
+  L = [{t_widen_to_number(K), MNess, t_widen_to_number(V)} ||
+        {K, MNess, V} <- Pairs],
+  t_map(L, t_widen_to_number(DefK), t_widen_to_number(DefV));
+t_widen_to_number(?matchstate(_P, _Slots) = T) -> T;
+t_widen_to_number(?nil) -> ?nil;
+t_widen_to_number(?number(_Set, _Tag)) -> t_number();
+t_widen_to_number(?opaque(Set)) ->
+  L = [Opaque#opaque{struct = t_widen_to_number(S)} ||
+        #opaque{struct = S} = Opaque <- set_to_list(Set)],
+  ?opaque(ordsets:from_list(L));
+t_widen_to_number(?product(Types)) ->
+  ?product(list_widen_to_number(Types));
+t_widen_to_number(?tuple(?any, _, _) = T) -> T;
+t_widen_to_number(?tuple(Types, Arity, Tag)) ->
+  ?tuple(list_widen_to_number(Types), Arity, Tag);
+t_widen_to_number(?tuple_set(_) = Tuples) ->
+  t_sup([t_widen_to_number(T) || T <- t_tuple_subtypes(Tuples)]);
+t_widen_to_number(?union(List)) ->
+  ?union(list_widen_to_number(List));
+t_widen_to_number(?var(_Id)= T) -> T.
+
+list_widen_to_number(List) ->
+  [t_widen_to_number(E) || E <- List].
+
 %%-----------------------------------------------------------------------------
 %% Maps
 %%
@@ -3104,9 +3148,18 @@ is_compat_arg(?list(Contents1, Termination1, Size1),
 is_compat_arg(?product(Types1), ?product(Types2)) ->
   is_compat_list(Types1, Types2);
 is_compat_arg(?map(Pairs1, DefK1, DefV1), ?map(Pairs2, DefK2, DefV2)) ->
-  (is_compat_list(Pairs1, Pairs2) andalso
-   is_compat_arg(DefK1, DefK2) andalso
-   is_compat_arg(DefV1, DefV2));
+  {Ks1, _, Vs1} = lists:unzip3(Pairs1),
+  {Ks2, _, Vs2} = lists:unzip3(Pairs2),
+  Key1 = t_sup([DefK1 | Ks1]),
+  Key2 = t_sup([DefK2 | Ks2]),
+  case is_compat_arg(Key1, Key2) of
+    true ->
+      Value1 = t_sup([DefV1 | Vs1]),
+      Value2 = t_sup([DefV2 | Vs2]),
+      is_compat_arg(Value1, Value2);
+    false ->
+      false
+  end;
 is_compat_arg(?tuple(?any, ?any, ?any), ?tuple(_, _, _)) -> false;
 is_compat_arg(?tuple(_, _, _), ?tuple(?any, ?any, ?any)) -> false;
 is_compat_arg(?tuple(Elements1, Arity, _),
@@ -4156,39 +4209,6 @@ t_abstract_records(?opaque(_)=Type, RecDict) ->
 t_abstract_records(T, _RecDict) -> 
   T.
 
-%% Map over types. Depth first. Used by the contract checker. ?list is
-%% not fully implemented so take care when changing the type in Termination.
-
--spec t_map(fun((erl_type()) -> erl_type()), erl_type()) -> erl_type().
-
-t_map(Fun, ?list(Contents, Termination, Size)) ->
-  Fun(?list(t_map(Fun, Contents), t_map(Fun, Termination), Size));
-t_map(Fun, ?function(Domain, Range)) ->
-  Fun(?function(t_map(Fun, Domain), t_map(Fun, Range)));
-t_map(Fun, ?product(Types)) -> 
-  Fun(?product([t_map(Fun, T) || T <- Types]));
-t_map(Fun, ?union(Types)) ->
-  Fun(t_sup([t_map(Fun, T) || T <- Types]));
-t_map(Fun, ?tuple(?any, ?any, ?any) = T) ->
-  Fun(T);
-t_map(Fun, ?tuple(Elements, _Arity, _Tag)) ->
-  Fun(t_tuple([t_map(Fun, E) || E <- Elements]));
-t_map(Fun, ?tuple_set(_) = Tuples) ->
-  Fun(t_sup([t_map(Fun, T) || T <- t_tuple_subtypes(Tuples)]));
-t_map(Fun, ?opaque(Set)) ->
-  L = [Opaque#opaque{struct = NewS} ||
-        #opaque{struct = S} = Opaque <- set_to_list(Set),
-        not t_is_none(NewS = t_map(Fun, S))],
-  Fun(case L of
-        [] -> ?none;
-        _ -> ?opaque(ordsets:from_list(L))
-      end);
-t_map(Fun, ?map(Pairs,DefK,DefV)) ->
-  %% TODO:
-  Fun(t_map(Pairs, Fun(DefK), Fun(DefV)));
-t_map(Fun, T) ->
-  Fun(T).
-
 %%=============================================================================
 %%
 %% Prettyprinter
diff --git a/lib/hipe/doc/src/hipe_app.xml b/lib/hipe/doc/src/hipe_app.xml
index 63bc6ea2d7..480290cd9e 100644
--- a/lib/hipe/doc/src/hipe_app.xml
+++ b/lib/hipe/doc/src/hipe_app.xml
@@ -62,6 +62,13 @@
       and the runtime system that have limited or no support for HiPE compiled modules.
     </p>
     <taglist>
+      <tag>Binary matching</tag>
+      <item><p>The HiPE compiler will crash on modules containing binary
+      matching unless they have been compiled with the <c>+no_bsm3</c> flag.
+      Note that this will disable all related optimizations done by the BEAM
+      compiler.</p>
+      </item>
+
       <tag>Stack traces</tag>
       <item><p>Stack traces returned from <seealso marker="erts:erlang#get_stacktrace/0">
       <c>erlang:get_stacktrace/0</c></seealso> or as part of <c>'EXIT'</c> terms
@@ -78,12 +85,12 @@
       </item>
 
       <tag>NIFs</tag>
-      <item><p>Modules compiled with HiPE can not call <seealso marker="erts:erlang#load_nif-2">
+      <item><p>Modules compiled with HiPE cannot call <seealso marker="erts:erlang#load_nif-2">
       <c>erlang:load_nif/2</c></seealso> to load NIFs.</p>
       </item>
 
       <tag>-on_load</tag>
-      <item><p>Modules compiled with HiPE can not use
+      <item><p>Modules compiled with HiPE cannot use
       <seealso marker="doc/reference_manual:code_loading#on_load"><c>-on_load()</c></seealso>
       directives.</p>
       </item>
diff --git a/lib/hipe/doc/src/notes.xml b/lib/hipe/doc/src/notes.xml
index e9cdf42018..9a803cb9df 100644
--- a/lib/hipe/doc/src/notes.xml
+++ b/lib/hipe/doc/src/notes.xml
@@ -31,6 +31,21 @@
   </header>
   <p>This document describes the changes made to HiPE.</p>
 
+<section><title>Hipe 3.18.3</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p> Fix a bug in the handling of the <c>Key</c> argument
+	    of <c>lists:{keysearch, keyfind, keymember}</c>. </p>
+          <p>
+	    Own Id: OTP-15570</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Hipe 3.18.2</title>
 
     <section><title>Improvements and New Features</title>
diff --git a/lib/hipe/icode/hipe_beam_to_icode.erl b/lib/hipe/icode/hipe_beam_to_icode.erl
index f429d40272..8e7e56b6c4 100644
--- a/lib/hipe/icode/hipe_beam_to_icode.erl
+++ b/lib/hipe/icode/hipe_beam_to_icode.erl
@@ -647,6 +647,13 @@ trans_fun([{put_tuple,_Size,Reg}|Instructions], Env) ->
   Primop = hipe_icode:mk_primop(Dest,mktuple,Src),
   Moves ++ [Primop | trans_fun(Instructions2,Env2)];
 %%--- put --- SHOULD NOT REALLY EXIST HERE; put INSTRUCTIONS ARE HANDLED ABOVE.
+%%--- put_tuple2 ---
+trans_fun([{put_tuple2,Reg,{list,Elements}}|Instructions], Env) ->
+  Dest = [mk_var(Reg)],
+  {Moves,Vars,Env2} = trans_elements(Elements, [], [], Env),
+  Src = lists:reverse(Vars),
+  Primop = hipe_icode:mk_primop(Dest, mktuple, Src),
+  Moves ++ [Primop | trans_fun(Instructions, Env2)];
 %%--- badmatch ---
 trans_fun([{badmatch,Arg}|Instructions], Env) ->
   BadVar = trans_arg(Arg),
@@ -1139,9 +1146,10 @@ trans_fun([{test,has_map_fields,{f,Lbl},Map,{list,Keys}}|Instructions], Env) ->
 		    lists:flatten([[K, {r, 0}] || K <- Keys])),
   [MapMove, TestInstructions | trans_fun(Instructions, Env2)];
 trans_fun([{get_map_elements,{f,Lbl},Map,{list,KVPs}}|Instructions], Env) ->
+  KVPs1 = overwrite_map_last(Map, KVPs),
   {MapMove, MapVar, Env1} = mk_move_and_var(Map, Env),
   {TestInstructions, GetInstructions, Env2} =
-    trans_map_query(MapVar, map_label(Lbl), Env1, KVPs),
+    trans_map_query(MapVar, map_label(Lbl), Env1, KVPs1),
   [MapMove, TestInstructions, GetInstructions | trans_fun(Instructions, Env2)];
 %%--- put_map_assoc ---
 trans_fun([{put_map_assoc,{f,Lbl},Map,Dst,_N,{list,Pairs}}|Instructions], Env) ->
@@ -1181,6 +1189,21 @@ trans_fun([raw_raise|Instructions], Env) ->
   [hipe_icode:mk_primop(Dst,raw_raise,Vars) |
    trans_fun(Instructions, Env)];
 %%--------------------------------------------------------------------
+%% New binary matching added in OTP 22.
+%%--------------------------------------------------------------------
+%%--- bs_get_tail ---
+trans_fun([{bs_get_tail=Name,_,_,_}|_Instructions], _Env) ->
+  nyi(Name);
+%%--- bs_start_match3 ---
+trans_fun([{bs_start_match3=Name,_,_,_,_}|_Instructions], _Env) ->
+  nyi(Name);
+%%--- bs_get_position ---
+trans_fun([{bs_get_position=Name,_,_,_}|_Instructions], _Env) ->
+  nyi(Name);
+%%--- bs_set_position ---
+trans_fun([{bs_set_position=Name,_,_}|_Instructions], _Env) ->
+  nyi(Name);
+%%--------------------------------------------------------------------
 %%--- ERROR HANDLING ---
 %%--------------------------------------------------------------------
 trans_fun([X|_], _) ->
@@ -1188,6 +1211,9 @@ trans_fun([X|_], _) ->
 trans_fun([], _) ->
   [].
 
+nyi(Name) ->
+  throw({unimplemented_instruction,Name}).
+
 %%--------------------------------------------------------------------
 %% trans_call and trans_enter generate correct Icode calls/tail-calls,
 %% recognizing explicit fails.
@@ -1563,6 +1589,21 @@ trans_type_test2(function2, Lbl, Arg, Arity, Env) ->
 			 hipe_icode:label_name(True), map_label(Lbl)),
   {[Move1,Move2,I,True],Env2}.
 
+
+%%
+%% Makes sure that if a get_map_elements instruction will overwrite
+%% the map source, it will be done last.
+%%
+overwrite_map_last(Map, KVPs) ->
+  overwrite_map_last2(Map, KVPs, []).
+
+overwrite_map_last2(Map, [Key,Map|KVPs], _Last) ->
+  overwrite_map_last2(Map, KVPs, [Key,Map]);
+overwrite_map_last2(Map, [Key,Val|KVPs], Last) ->
+  [Key,Val|overwrite_map_last2(Map, KVPs, Last)];
+overwrite_map_last2(_Map, [], Last) ->
+  Last.
+
 %%
 %% Handles the get_map_elements instruction and the has_map_fields
 %% test instruction.
@@ -1683,6 +1724,19 @@ trans_puts([{put,X}|Code], Vars, Moves, Env) ->
 trans_puts(Code, Vars, Moves, Env) ->    %% No more put operations
   {Moves, Code, Vars, Env}.
 
+trans_elements([X|Code], Vars, Moves, Env) ->
+  case type(X) of
+    var ->
+      Var = mk_var(X),
+      trans_elements(Code, [Var|Vars], Moves, Env);
+    #beam_const{value=C} ->
+      Var = mk_var(new),
+      Move = hipe_icode:mk_move(Var, hipe_icode:mk_const(C)),
+      trans_elements(Code, [Var|Vars], [Move|Moves], Env)
+  end;
+trans_elements([], Vars, Moves, Env) ->
+  {Moves, Vars, Env}.
+
 %%-----------------------------------------------------------------------
 %% The code for this instruction is a bit large because we are treating
 %% different cases differently.  We want to use the icode `type' 
diff --git a/lib/hipe/icode/hipe_icode_range.erl b/lib/hipe/icode/hipe_icode_range.erl
index 34b18acccd..098a7a8d8c 100644
--- a/lib/hipe/icode/hipe_icode_range.erl
+++ b/lib/hipe/icode/hipe_icode_range.erl
@@ -1633,7 +1633,7 @@ inf_bsl(_, pos_inf) -> neg_inf;
 inf_bsl(Number, neg_inf) when is_integer(Number), Number >= 0 -> 0;
 inf_bsl(_Number, neg_inf) -> -1;
 inf_bsl(Number1, Number2) when is_integer(Number1), is_integer(Number2) ->
-  %% We can not shift left with a number which is not a fixnum. We
+  %% We cannot shift left with a number which is not a fixnum. We
   %% don't have enough memory.
   Bits = ?BITS,
   if Number2 > (Bits bsl 1) -> inf_bsl(Number1, pos_inf);
diff --git a/lib/hipe/llvm/Makefile b/lib/hipe/llvm/Makefile
index 817ff67dcd..9f7a2def6d 100644
--- a/lib/hipe/llvm/Makefile
+++ b/lib/hipe/llvm/Makefile
@@ -70,7 +70,10 @@ TARGET_FILES= $(MODULES:%=$(EBIN)/%.$(EMULATOR))
 
 include ../native.mk
 
-ERL_COMPILE_FLAGS += -Werror +inline +warn_export_vars #+warn_missing_spec
+ERL_COMPILE_FLAGS += +inline +warn_export_vars #+warn_missing_spec
+ifneq ($(NATIVE_LIBS_ENABLED),yes)
+ERL_COMPILE_FLAGS += -Werror
+endif
 
 # if in 32 bit backend define BIT32 symbol
 ifneq ($(BITS64),yes)
diff --git a/lib/hipe/llvm/hipe_llvm_main.erl b/lib/hipe/llvm/hipe_llvm_main.erl
index 54c435c127..44f0566379 100644
--- a/lib/hipe/llvm/hipe_llvm_main.erl
+++ b/lib/hipe/llvm/hipe_llvm_main.erl
@@ -526,8 +526,8 @@ unique_folder(FunName, Arity, Options) ->
     case proplists:get_bool(llvm_save_temps, Options) of
       true ->  %% Store folder in current directory
         DirName;
-      false -> %% Temporarily store folder in tempfs (/dev/shm/)
-        "/dev/shm/" ++ DirName
+      false -> %% Temporarily store folder in tempfs or tmp dir
+        tmpfs_folder() ++ DirName
     end,
   %% Make sure it does not exist
   case dir_exists(Dir) of
@@ -537,6 +537,14 @@ unique_folder(FunName, Arity, Options) ->
       Dir
   end.
 
+tmpfs_folder() ->
+  case os:type() of
+    {unix, linux} ->
+      "/dev/shm/";
+    {unix, _} -> %% Fallback to tmp dir. e.g. FreeBSD
+      "/tmp/"
+  end.
+
 %% @doc Function that checks that a given Filename is an existing Directory
 %%      Name (from http://rosettacode.org/wiki/Ensure_that_a_file_exists#Erlang)
 dir_exists(Filename) ->
diff --git a/lib/hipe/main/hipe.erl b/lib/hipe/main/hipe.erl
index e2cb9c0f0b..094b7bc508 100644
--- a/lib/hipe/main/hipe.erl
+++ b/lib/hipe/main/hipe.erl
@@ -196,7 +196,7 @@
  	 file/1,
 	 file/2,
 	 get_llvm_version/0,
-	 llvm_support_available/0,
+	 erllvm_is_supported/0,
 	 load/1,
 	 help/0,
 	 help_hiper/0,
@@ -218,12 +218,11 @@
 %% Basic type declaration for exported functions of the 'hipe' module
 %%-------------------------------------------------------------------
 
--type mod() :: atom().
--type f_unit() :: mod() | binary().
+-type mod() :: module().
+-type file_or_bin() :: file:filename() | binary().
 -type ret_rtl() :: [_].
 -type c_ret() :: {'ok', mod()} | {'error', term()} |
                  {'ok', mod(), ret_rtl()}. %% The last for debugging only
--type compile_file() :: atom() | string() | binary().
 -type compile_ret() :: {hipe_architecture(), binary()} | list().
 
 %%-------------------------------------------------------------------
@@ -233,26 +232,26 @@
 
 %%-------------------------------------------------------------------
 
-%% @spec load(Mod) -> {module, Mod} | {error, Reason}
-%%     Mod = mod()
+%% @spec load(Module) -> {module, Module} | {error, Reason}
+%%     Module = mod()
 %%     Reason = term()
 %% 
 %% @doc Like load/2, but tries to locate a BEAM file automatically.
 %%
 %% @see load/2
 
--spec load(Mod) -> {'module', Mod} | {'error', term()} when Mod :: mod().
+-spec load(Module) -> {'module', Module} | {'error', Reason :: term()}
+                   when Module :: mod().
 
-load(Mod) ->
-  load(Mod, beam_file(Mod)).
+load(Module) ->
+  load(Module, beam_file(Module)).
 
-%% @spec load(Mod, BeamFileName) -> {module, Mod} | {error, Reason}
-%%     Mod = mod()
+%% @spec load(Module, BeamFileName) -> {module, Module} | {error, Reason}
+%%     Module = mod()
+%%     BeamFileName = file:filename()
 %%     Reason = term()
-%%     BeamFileName = string()
-%%     filename() = term()
 %%
-%% @type mod() = atom(). A module name.
+%% @type mod() = module(). A module name.
 %% 
 %% @doc User interface for loading code into memory. The code can be
 %% given as a native code binary or as the file name of a BEAM file
@@ -262,8 +261,8 @@ load(Mod) ->
 %%
 %% @see load/1
 
--spec load(Mod, string()) -> {'module', Mod} | {'error', term()}
-				   when Mod :: mod().
+-spec load(Module, file:filename()) -> {'module', Module} | {'error', term()}
+				    when Module :: mod().
 
 load(Mod, BeamFileName) when is_list(BeamFileName) ->
   Architecture = erlang:system_info(hipe_architecture),
@@ -273,26 +272,22 @@ load(Mod, BeamFileName) when is_list(BeamFileName) ->
     Error -> {error, Error}
   end.
 
-%% @spec c(Name) -> {ok, Name} | {error, Reason}
-%%       Name = mod()
+%% @spec c(Mod) -> {ok, Mod} | {error, Reason}
+%%       Mod = mod()
 %%       Reason = term()
 %%
-%% @equiv c(Name, [])
+%% @equiv c(Mod, [])
 
 -spec c(mod()) -> c_ret().
 
-c(Name) ->
-  c(Name, []).
+c(Mod) ->
+  c(Mod, []).
 
-%% @spec c(Name, options()) -> {ok, Name} | {error, Reason}
-%%     Name = mod()
+%% @spec c(Module, options()) -> {ok, Module} | {error, Reason}
+%%     Module = mod()
 %%     options() = [option()]
 %%     option() = term()
 %%     Reason = term()
-%%
-%% @type fun() = atom(). A function identifier.
-%%
-%% @type arity() = integer(). A function arity; always nonnegative.
 %% 
 %% @doc User-friendly native code compiler interface. Reads BEAM code
 %% from the corresponding "Module<code>.beam</code>" file in the
@@ -307,12 +302,12 @@ c(Name) ->
 
 -spec c(mod(), comp_options()) -> c_ret().
 
-c(Name, Options) ->
-  c(Name, beam_file(Name), Options).
+c(Module, Options) ->
+  c(Module, beam_file(Module), Options).
 
-%% @spec c(Name, File, options()) -> {ok, Name} | {error, Reason}
-%%     Name = mod()
-%%     File = filename() | binary()
+%% @spec c(Module, File, options()) -> {ok, Module} | {error, Reason}
+%%     Module = mod()
+%%     File = file:filename() | binary()
 %%     Reason = term()
 %%
 %% @doc Like <code>c/2</code>, but reads BEAM code from the specified
@@ -321,32 +316,32 @@ c(Name, Options) ->
 %% @see c/2
 %% @see f/2
 
-c(Name, File, Opts) ->
+c(Module, File, Opts) ->
   Opts1 = user_compile_opts(Opts),
-  case compile(Name, File, Opts1) of
+  case compile(Module, File, Opts1) of
     {ok, Res} ->
       case proplists:get_bool(to_rtl, Opts1) of
-	true -> {ok, Name, Res};
-	false -> {ok, Name}
+	true  -> {ok, Module, Res};
+	false -> {ok, Module}
       end;
     Other ->
       Other
   end.
 
 %% @spec f(File) -> {ok, Name} | {error, Reason}
-%%     File = filename() | binary()
+%%     File = file:filename() | binary()
 %%     Name = mod()
 %%     Reason = term()
 %%
 %% @equiv f(File, [])
 
--spec f(f_unit()) -> {'ok', mod()} | {'error', term()}.
+-spec f(file_or_bin()) -> {'ok', mod()} | {'error', term()}.
 
 f(File) ->
   f(File, []).
 
 %% @spec f(File, options()) -> {ok, Name} | {error, Reason}
-%%     File = filename() | binary()
+%%     File = file:filename() | binary()
 %%     Name = mod()
 %%     Reason = term()
 %%
@@ -355,7 +350,7 @@ f(File) ->
 %%
 %% @see c/3
 
--spec f(f_unit(), comp_options()) -> {'ok', mod()} | {'error', term()}.
+-spec f(file_or_bin(), comp_options()) -> {'ok', mod()} | {'error', term()}.
 
 f(File, Opts) ->
   case file(File, user_compile_opts(Opts)) of
@@ -371,20 +366,20 @@ user_compile_opts(Opts) ->
   Opts ++ ?USER_DEFAULTS.
 
 
-%% @spec compile(Name) -> {ok, {Target,Binary}} | {error, Reason}
-%%       Name = mod()
+%% @spec compile(Module) -> {ok, {Target,Binary}} | {error, Reason}
+%%       Module = mod()
 %%       Binary = binary()
 %%       Reason = term()
 %% 
-%% @equiv compile(Name, [])
+%% @equiv compile(Module, [])
 
 -spec compile(mod()) -> {'ok', compile_ret()} | {'error', term()}.
 
-compile(Name) ->
-  compile(Name, []).
+compile(Module) ->
+  compile(Module, []).
 
-%% @spec compile(Name, options()) -> {ok, {Target,Binary}} | {error, Reason}
-%%       Name = mod()
+%% @spec compile(Module, options()) -> {ok, {Target,Binary}} | {error, Reason}
+%%       Module = mod()
 %%       Binary = binary()
 %%       Reason = term()
 %%
@@ -403,26 +398,26 @@ compile(Name) ->
 %% @see file/2
 %% @see load/2
 
--spec compile(mod(), comp_options()) -> {'ok', compile_ret()} | {'error', _}.
+-spec compile(mod(), comp_options()) -> {'ok', compile_ret()} | {'error', term()}.
 
-compile(Name, Options) ->
-  compile(Name, beam_file(Name), Options).
+compile(Module, Options) ->
+  compile(Module, beam_file(Module), Options).
 
--spec beam_file(mod()) -> string().
+-spec beam_file(mod()) -> file:filename().
 
 beam_file(Module) when is_atom(Module) ->
   case code:which(Module) of
     non_existing ->
-      ?error_msg("Cannot find ~w.beam file.",[Module]),
+      ?error_msg("Cannot find ~w.beam file.", [Module]),
       ?EXIT({cant_find_beam_file,Module});
-    File -> % string()
+    File when is_list(File) ->
       File
   end.
 
 %% @spec compile(Name, File, options()) ->
 %%           {ok, {Target, Binary}} | {error, Reason}
 %%       Name = mod()
-%%       File = filename() | binary()
+%%       File = file:filename() | binary()
 %%       Binary = binary()
 %%       Reason = term()
 %% 
@@ -431,7 +426,7 @@ beam_file(Module) when is_atom(Module) ->
 %%
 %% @see compile/2
 
--spec compile(mod(), compile_file(), comp_options()) ->
+-spec compile(mod(), file_or_bin(), comp_options()) ->
 	 {'ok', compile_ret()} | {'error', term()}.
 
 compile(Name, File, Opts0) when is_atom(Name) ->
@@ -475,18 +470,18 @@ compile(Name, File, Opts0) when is_atom(Name) ->
       run_compiler(Name, DisasmFun, IcodeFun, Opts)
   end.
 
--spec compile_core(mod(), cerl:c_module(), compile_file(), comp_options()) ->
+-spec compile_core(mod(), cerl:c_module(), file_or_bin(), comp_options()) ->
 	 {'ok', compile_ret()} | {'error', term()}.
 
 compile_core(Name, Core0, File, Opts) ->
   Core = cerl:from_records(Core0),
   compile(Name, Core, File, Opts).
 
-%% @spec compile(Name, Core, File, options()) ->
+%% @spec compile(Module, Core, File, options()) ->
 %%           {ok, {Target, Binary}} | {error, Reason}
-%%       Name = mod()
+%%       Module = mod()
 %%       Core = coreErlang() | []
-%%       File = filename() | binary()
+%%       File = file:filename() | binary()
 %%       Binary = binary()
 %%       Reason = term()
 %% 
@@ -499,7 +494,7 @@ compile_core(Name, Core0, File, Opts) ->
 %%
 %% @see compile/3
 
--spec compile(mod(), cerl:c_module() | [], compile_file(), comp_options()) ->
+-spec compile(mod(), cerl:c_module() | [], file_or_bin(), comp_options()) ->
 	 {'ok', compile_ret()} | {'error', term()}.
 
 compile(Name, [], File, Opts) ->
@@ -511,38 +506,36 @@ compile(Name, Core, File, Opts) when is_atom(Name) ->
 	     end,
   run_compiler(Name, DisasmFun, IcodeFun, Opts).
 
-%% @spec file(File) -> {ok, Name, {Target, Binary}} | {error, Reason}
-%%       File = filename() | binary()
-%%       Name = mod() | mfa()
+%% @spec file(File) -> {ok, Mod, {Target, Binary}} | {error, Reason}
+%%       File = file:filename()
+%%       Mod = mod()
 %%       Binary = binary()
 %%       Reason = term()
 %% 
 %% @equiv file(File, [])
 
--spec file(Mod) -> {'ok', Mod, compile_ret()} | {'error', term()}
-		     when Mod :: mod().
+-spec file(file:filename()) -> {'ok', mod(), compile_ret()} | {'error', term()}.
 
 file(File) ->
   file(File, []).
 
-%% @spec file(File, options()) -> {ok, Name, {Target,Binary}} | {error, Reason}
-%%       File = filename()
-%%       Name = mod() | mfa()
+%% @spec file(File, options()) -> {ok, Mod, {Target, Binary}} | {error, Reason}
+%%       File = file:filename()
+%%       Mod = mod()
 %%       Binary = binary()
 %%       Reason = term()
 %% 
 %% @doc Like <code>compile/2</code>, but takes the module name from the
-%% specified <code>File</code>. Returns both the name and the final
+%% specified <code>File</code>. Returns both the module name and the final
 %% binary if successful.
 %%
 %% @see file/1
 %% @see compile/2
 
--spec file(Mod, comp_options()) -> {'ok', Mod, compile_ret()}
-				|  {'error', term()}
-				     when Mod :: mod().
-file(File, Options) when is_atom(File) ->
-  case beam_lib:info(atom_to_list(File)) of
+-spec file(file:filename(), comp_options()) -> {'ok', mod(), compile_ret()}
+				             | {'error', Reason :: term()}.
+file(File, Options) when is_list(File) ->
+  case beam_lib:info(File) of
     L when is_list(L) ->
       {module, Mod} = lists:keyfind(module, 1, L),
       case compile(Mod, File, Options) of
@@ -590,9 +583,8 @@ fix_beam_exports([], Exports) ->
   Exports.
 
 get_beam_icode(Mod, {BeamCode, Exports}, File, Options) ->
-  {ok, Icode} =
-    ?option_time((catch {ok, hipe_beam_to_icode:module(BeamCode, Options)}),
-	         "BEAM-to-Icode", Options),
+  Icode = ?option_time(hipe_beam_to_icode:module(BeamCode, Options),
+                       "BEAM-to-Icode", Options),
   BeamBin = get_beam_code(File),
   {{Mod, Exports, Icode}, BeamBin}.
 
@@ -653,7 +645,7 @@ run_compiler_1(Name, DisasmFun, IcodeFun, Options) ->
 				   get(hipe_target_arch)),
 	    Opts =
 	      case proplists:get_bool(to_llvm, Opts0) andalso
-		not llvm_support_available() of
+		not llvm_version_is_OK() of
 		true ->
 		  ?error_msg("No LLVM version 3.9 or greater "
 			     "found in $PATH; aborting "
@@ -669,9 +661,12 @@ run_compiler_1(Name, DisasmFun, IcodeFun, Options) ->
 	    {Icode, WholeModule} = IcodeFun(Code, Opts),
 	    CompRes = compile_finish(Icode, WholeModule, Opts),
 	    compiler_return(CompRes, Parent)
-	  catch error:Error:StackTrace ->
+	  catch
+            error:Error:StackTrace ->
 	      print_crash_message(Name, Error, StackTrace),
-	      exit(Error)
+	      exit(Error);
+            throw:{unimplemented_instruction,_Instruction}=Error ->
+              exit(Error)
 	  end
       end),
   Timeout = case proplists:get_value(timeout, Options) of
@@ -1607,9 +1602,15 @@ check_options(Opts) ->
       ok
   end.
 
--spec llvm_support_available() -> boolean().
+-spec erllvm_is_supported() -> boolean().
+erllvm_is_supported() ->
+  %% XXX: The test should really check the _target_ architecture,
+  %%      (hipe_target_arch), but there's no guarantee it's set.
+  Arch = erlang:system_info(hipe_architecture),
+  lists:member(Arch, [amd64, x86]) andalso llvm_version_is_OK().
 
-llvm_support_available() ->
+-spec llvm_version_is_OK() -> boolean().
+llvm_version_is_OK() ->
   get_llvm_version() >= {3,9}.
 
 -type llvm_version() :: {Major :: integer(), Minor :: integer()}.
diff --git a/lib/hipe/rtl/Makefile b/lib/hipe/rtl/Makefile
index becdd0b7d8..0c0f6e24f5 100644
--- a/lib/hipe/rtl/Makefile
+++ b/lib/hipe/rtl/Makefile
@@ -75,7 +75,10 @@ TARGET_FILES= $(MODULES:%=$(EBIN)/%.$(EMULATOR))
 
 include ../native.mk
 
-ERL_COMPILE_FLAGS += -Werror +inline +warn_unused_import +warn_export_vars
+ERL_COMPILE_FLAGS += +inline +warn_unused_import +warn_export_vars
+ifneq ($(NATIVE_LIBS_ENABLED),yes)
+ERL_COMPILE_FLAGS += -Werror
+endif
 
 # ----------------------------------------------------
 # Targets
diff --git a/lib/hipe/rtl/hipe_icode2rtl.erl b/lib/hipe/rtl/hipe_icode2rtl.erl
index 6da8a76d34..1ab41f4deb 100644
--- a/lib/hipe/rtl/hipe_icode2rtl.erl
+++ b/lib/hipe/rtl/hipe_icode2rtl.erl
@@ -215,7 +215,7 @@ gen_enter(I, VarMap, ConstTab) ->
   {Code1, ConstTab2} =
     case hipe_icode:enter_type(I) of
       primop ->
-	IsGuard = false, % enter can not happen in a guard
+	IsGuard = false, % enter cannot happen in a guard
 	hipe_rtl_primops:gen_enter_primop({Fun, Args}, IsGuard, ConstTab1);
       Type ->
 	Call = gen_enter_1(Fun, Args, Type),
diff --git a/lib/hipe/rtl/hipe_rtl_arith.inc b/lib/hipe/rtl/hipe_rtl_arith.inc
index c05b7aa160..575f10b542 100644
--- a/lib/hipe/rtl/hipe_rtl_arith.inc
+++ b/lib/hipe/rtl/hipe_rtl_arith.inc
@@ -118,8 +118,8 @@ eval_alu(Op, Arg1, Arg2) ->
 
 %% Björn & Bjarni:
 %% We need to be able to do evaluations based only on the bits, since
-%% there are cases where we can evaluate a subset of the bits, but can
-%% not do a full eval-alub call (eg. a + 0 gives no carry)
+%% there are cases where we can evaluate a subset of the bits, but
+%% cannot do a full eval-alub call (eg. a + 0 gives no carry)
 %%
 -spec eval_cond_bits(hipe_rtl:alub_cond(), boolean(),
 		     boolean(), boolean(), boolean()) -> boolean().
diff --git a/lib/hipe/rtl/hipe_rtl_ssa_const_prop.erl b/lib/hipe/rtl/hipe_rtl_ssa_const_prop.erl
index cad43e2df5..72373e536d 100644
--- a/lib/hipe/rtl/hipe_rtl_ssa_const_prop.erl
+++ b/lib/hipe/rtl/hipe_rtl_ssa_const_prop.erl
@@ -31,11 +31,11 @@
 %%
 %% Some things to note:
 %%
-%% 1. All precoloured registers are assumed to contain bottom. We can not
+%% 1. All precoloured registers are assumed to contain bottom. We cannot
 %%    do anything with them since they are not in SSA-form. This might be
 %%    possible to resolve in some way, but we decided to not go there.
 %%
-%% 2. const_labels are assumed to be bottom, we can not find the address
+%% 2. const_labels are assumed to be bottom, we cannot find the address
 %%    in any nice way (that I know of, maybe someone can help ?). I
 %%    suppose they don't get a value until linking (or some step that
 %%    resembles it). They are only affecting bignums and floats (at least
@@ -579,7 +579,7 @@ visit_multimove(Inst, Env) ->
 %% Procedure : visit_call/2
 %% Purpose   : execute a call-instruction. All calls return bottom. We make 
 %%             this assumption since the icode-leel have taken care of BIF's
-%%             and we belive that we are left with the things that can not be
+%%             and we belive that we are left with the things that cannot be
 %%             done att compile time.
 %% Arguments : Inst - The instruction
 %%             Env  - The environment
diff --git a/lib/hipe/test/Makefile b/lib/hipe/test/Makefile
index efeb0887ab..3650cda663 100644
--- a/lib/hipe/test/Makefile
+++ b/lib/hipe/test/Makefile
@@ -13,7 +13,6 @@ MODULES= \
 # .erl files for these modules are automatically generated
 GEN_MODULES= \
 	basic_SUITE \
-	bs_SUITE \
 	maps_SUITE \
 	sanity_SUITE
 
diff --git a/lib/hipe/test/basic_SUITE_data/basic_inline_function.erl b/lib/hipe/test/basic_SUITE_data/basic_inline_function.erl
deleted file mode 100644
index 4c08064670..0000000000
--- a/lib/hipe/test/basic_SUITE_data/basic_inline_function.erl
+++ /dev/null
@@ -1,73 +0,0 @@
-%%% -*- erlang-indent-level: 2 -*-
-%%%-------------------------------------------------------------------
-%%% Author: Kostis Sagonas
-%%%
-%%% Contains tests that depend on the compiler inliner being turned on.
-%%%-------------------------------------------------------------------
--module(basic_inline_function).
-
--export([test/0]).
-
--compile({inline, [{to_objects, 3}]}).
-
-test() ->
-  ok = test_inline_match(),
-  ok.
-
-%%--------------------------------------------------------------------
-
-test_inline_match() ->
-  bad_object = test1(a, {binary, foo, set}, c),
-  bad_object = test2(a, {binary, foo, set}, c),
-  bad_object = test3(a, {binary, foo, set}, c),
-  ok.
-
-%% Inlined
-test1(KeysObjs, C, Ts) ->
-  case catch to_objects(KeysObjs, C, Ts) of
-    {'EXIT', _} ->
-      bad_object;
-    ok ->
-      ok
-  end.
-
-%% "Inlined" by hand
-test2(KeysObjs, C, _Ts) ->
-  case catch (case C of
-		{binary, _, set} ->
-		  <<_ObjSz0:32, _T/binary>> = KeysObjs;
-		_ -> ok
-	      end) of
-    {'EXIT', _} ->
-      bad_object;
-    ok ->
-      ok
-  end.
-
-%% Not inlined
-test3(KeysObjs, C, Ts) ->
-  case catch fto_objects(KeysObjs, C, Ts) of
-    {'EXIT', _} ->
-      bad_object;
-    ok ->
-      ok
-  end.
-
-%% Inlined.
-to_objects(Bin, {binary, _, set}, _Ts) ->
-  <<_ObjSz0:32, _T/binary>> = Bin,
-  ok;
-to_objects(<<_ObjSz0:32, _T/binary>> ,_, _) ->
-  ok;
-to_objects(_Bin, _, _Ts) ->
-  ok.
-
-%% Not Inlined.
-fto_objects(Bin, {binary, _, set}, _Ts) ->
-  <<_ObjSz0:32, _T/binary>> = Bin,
-  ok;
-fto_objects(<<_ObjSz0:32, _T/binary>> ,_,_) ->
-  ok;
-fto_objects(_Bin, _, _Ts) ->
-  ok.
-
diff --git a/lib/hipe/test/hipe_testsuite_driver.erl b/lib/hipe/test/hipe_testsuite_driver.erl
index 8813af5dfc..c506dd5e1d 100644
--- a/lib/hipe/test/hipe_testsuite_driver.erl
+++ b/lib/hipe/test/hipe_testsuite_driver.erl
@@ -170,7 +170,7 @@ run(TestCase, Dir, _OutDir) ->
     {ok, TestCase} = hipe:c(TestCase, [o0|HiPEOpts]),
     ok = TestCase:test(),
     ToLLVM = try TestCase:to_llvm() catch error:undef -> true end,
-    case ToLLVM andalso hipe:llvm_support_available() of
+    case ToLLVM andalso hipe:erllvm_is_supported() of
 	true ->
 	    {ok, TestCase} = hipe:c(TestCase, [to_llvm|HiPEOpts]),
 	    ok = TestCase:test();
diff --git a/lib/hipe/vsn.mk b/lib/hipe/vsn.mk
index 12d621bf01..39565d721f 100644
--- a/lib/hipe/vsn.mk
+++ b/lib/hipe/vsn.mk
@@ -1 +1 @@
-HIPE_VSN = 3.18.2
+HIPE_VSN = 3.18.3
diff --git a/lib/inets/doc/src/http_uri.xml b/lib/inets/doc/src/http_uri.xml
index 2dec5acbf9..6d3547f4fe 100644
--- a/lib/inets/doc/src/http_uri.xml
+++ b/lib/inets/doc/src/http_uri.xml
@@ -30,7 +30,7 @@
     <rev></rev>
   </header>
 
-  <module>http_uri</module>
+  <module since="OTP R15B01">http_uri</module>
   <modulesummary>URI utility module</modulesummary>
 
   <description>
@@ -79,7 +79,7 @@
   
   <funcs>
     <func>
-      <name>decode(HexEncodedURI) -> URI</name>
+      <name since="OTP R15B01">decode(HexEncodedURI) -> URI</name>
       
       <fsummary>Decodes a hexadecimal encoded URI.</fsummary>
       <type>
@@ -93,7 +93,7 @@
       </desc>
     </func>
     <func>
-      <name>encode(URI) -> HexEncodedURI</name>
+      <name since="OTP R15B01">encode(URI) -> HexEncodedURI</name>
       
       <fsummary>Encodes a hexadecimal encoded URI.</fsummary>
       <type>
@@ -109,8 +109,8 @@
     </func>
 
     <func>
-      <name>parse(URI) -> {ok, Result} | {error, Reason}</name>
-      <name>parse(URI, Options) -> {ok, Result} | {error, Reason}</name>
+      <name since="OTP R15B01">parse(URI) -> {ok, Result} | {error, Reason}</name>
+      <name since="OTP R15B01">parse(URI, Options) -> {ok, Result} | {error, Reason}</name>
       <fsummary>Parses a URI.</fsummary>
       <type>
         <v>URI = uri()</v> 
@@ -165,7 +165,7 @@ fun(SchemeStr :: string() | binary()) ->
     </func>
 
     <func>
-      <name>scheme_defaults() -> SchemeDefaults</name>
+      <name since="OTP R15B01">scheme_defaults() -> SchemeDefaults</name>
       <fsummary>A list of the scheme and their default ports.</fsummary>
       <type>
         <v>SchemeDefaults = [{scheme(), default_scheme_port_number()}] </v> 
diff --git a/lib/inets/doc/src/httpc.xml b/lib/inets/doc/src/httpc.xml
index a2871f3b95..7451b314ec 100644
--- a/lib/inets/doc/src/httpc.xml
+++ b/lib/inets/doc/src/httpc.xml
@@ -30,7 +30,7 @@
     <rev></rev>
   </header>
 
-  <module>httpc</module>
+  <module since="OTP R13B04">httpc</module>
   <modulesummary>An HTTP/1.1 client</modulesummary>
 
   <description>
@@ -151,8 +151,8 @@
   <funcs>
    
     <func>
-      <name>cancel_request(RequestId) -></name>
-      <name>cancel_request(RequestId, Profile) -> ok</name>
+      <name since="OTP R13B04">cancel_request(RequestId) -></name>
+      <name since="OTP R13B04">cancel_request(RequestId, Profile) -> ok</name>
       <fsummary>Cancels an asynchronous HTTP request.</fsummary>
       <type>
         <v>RequestId = request_id() - A unique identifier as returned
@@ -169,9 +169,9 @@
     </func>
 
     <func>
-      <name>cookie_header(Url) -> </name>
-      <name>cookie_header(Url, Profile | Opts) -> header() | {error, Reason}</name>
-      <name>cookie_header(Url, Opts, Profile) -> header() | {error, Reason}</name>
+      <name since="OTP R13B04">cookie_header(Url) -> </name>
+      <name since="OTP R13B04">cookie_header(Url, Profile | Opts) -> header() | {error, Reason}</name>
+      <name since="OTP R15B">cookie_header(Url, Opts, Profile) -> header() | {error, Reason}</name>
       <fsummary>Returns the cookie header that would have been sent when
       making a request to URL using the profile <c>Profile</c>.</fsummary>
       <type>
@@ -193,8 +193,8 @@
     </func>
 
      <func>
-      <name>get_options(OptionItems) -> {ok, Values} | {error, Reason}</name>
-      <name>get_options(OptionItems, Profile) -> {ok, Values} | {error, Reason}</name>
+      <name since="OTP R15B01">get_options(OptionItems) -> {ok, Values} | {error, Reason}</name>
+      <name since="OTP R15B01">get_options(OptionItems, Profile) -> {ok, Values} | {error, Reason}</name>
       <fsummary>Gets the currently used options.</fsummary>
       <type>
         <v>OptionItems = all | [option_item()]</v>
@@ -223,8 +223,8 @@
     </func>
 
     <func>
-      <name>info() -> list()</name>
-      <name>info(Profile) -> list()</name>
+      <name since="OTP R15B02">info() -> list()</name>
+      <name since="OTP R15B02">info(Profile) -> list()</name>
       <fsummary>Produces a list of miscellaneous information.</fsummary>
       <type>
 	<v>Profile = profile() | pid()</v>
@@ -239,8 +239,8 @@
 
     
     <func>
-      <name>reset_cookies() -> void()</name>
-      <name>reset_cookies(Profile) -> void()</name>
+      <name since="OTP R13B04">reset_cookies() -> void()</name>
+      <name since="OTP R13B04">reset_cookies(Profile) -> void()</name>
       <fsummary>Resets the cookie database.</fsummary>
       <type>
 	<v>Profile = profile() | pid()</v>
@@ -254,8 +254,8 @@
     </func>
     
     <func>
-      <name>request(Url) -> </name>
-      <name>request(Url, Profile) -> {ok, Result} | {error, Reason}</name>
+      <name since="OTP R13B04">request(Url) -> </name>
+      <name since="OTP R13B04">request(Url, Profile) -> {ok, Result} | {error, Reason}</name>
       <fsummary>Sends a get HTTP request.</fsummary>
       <type>
         <v>Url = url()</v> 
@@ -272,8 +272,8 @@
     </func>
 
     <func>
-      <name>request(Method, Request, HTTPOptions, Options) -></name>
-      <name>request(Method, Request, HTTPOptions, Options, Profile) -> {ok, Result} | {ok, saved_to_file} | {error, Reason}</name>
+      <name since="OTP R13B04">request(Method, Request, HTTPOptions, Options) -></name>
+      <name since="OTP R13B04">request(Method, Request, HTTPOptions, Options, Profile) -> {ok, Result} | {ok, saved_to_file} | {error, Reason}</name>
       
       <fsummary>Sends an HTTP request.</fsummary>
       <type>
@@ -521,8 +521,8 @@
 
   
     <func>
-      <name>set_options(Options) -> </name>
-      <name>set_options(Options, Profile) -> ok | {error, Reason}</name>
+      <name since="OTP R13B04">set_options(Options) -> </name>
+      <name since="OTP R13B04">set_options(Options, Profile) -> ok | {error, Reason}</name>
       <fsummary>Sets options to be used for subsequent requests.</fsummary>
       <type>
         <v>Options = [Option]</v>
@@ -639,8 +639,8 @@
     </func>
      
     <func>
-      <name>store_cookies(SetCookieHeaders, Url) -> </name>
-      <name>store_cookies(SetCookieHeaders, Url, Profile) -> ok | {error, Reason}</name>
+      <name since="OTP R14B02">store_cookies(SetCookieHeaders, Url) -> </name>
+      <name since="OTP R14B02">store_cookies(SetCookieHeaders, Url, Profile) -> ok | {error, Reason}</name>
       <fsummary>Saves the cookies defined in <c>SetCookieHeaders</c> in the 
       client profile cookie database.</fsummary>
       <type>
@@ -658,7 +658,7 @@
     </func>
 
     <func>
-      <name>stream_next(Pid) -> ok</name>
+      <name since="OTP R13B04">stream_next(Pid) -> ok</name>
       <fsummary>Triggers the next message to be streamed, that is,
 	the same behavior as active one for sockets.
       </fsummary>
@@ -676,8 +676,8 @@
     </func>
     
     <func>
-      <name>which_cookies() -> cookies()</name>
-      <name>which_cookies(Profile) -> cookies()</name>
+      <name since="OTP R13B04">which_cookies() -> cookies()</name>
+      <name since="OTP R13B04">which_cookies(Profile) -> cookies()</name>
       <fsummary>Dumps the entire cookie database.</fsummary>
       <type>
 	<v>Profile = profile() | pid()</v>
@@ -695,8 +695,8 @@
     </func>
 
     <func>
-      <name>which_sessions() -> session_info()</name>
-      <name>which_sessions(Profile) -> session_info()</name>
+      <name since="OTP R15B02">which_sessions() -> session_info()</name>
+      <name since="OTP R15B02">which_sessions(Profile) -> session_info()</name>
       <fsummary>Produces a slightly processed dump of the sessions database.</fsummary>
       <type>
 	<v>Profile = profile() | pid()</v>
diff --git a/lib/inets/doc/src/httpd.xml b/lib/inets/doc/src/httpd.xml
index 2c70c2b050..1750078db0 100644
--- a/lib/inets/doc/src/httpd.xml
+++ b/lib/inets/doc/src/httpd.xml
@@ -29,7 +29,7 @@
     <rev>2.2</rev>
     <file>httpd.sgml</file>
   </header>
-  <module>httpd</module> 
+  <module since="">httpd</module> 
   <modulesummary>
     HTTP server API
   </modulesummary>
@@ -173,7 +173,7 @@
       <item>
 	<p>For <c>ip_comm</c> configuration options, see 
 	<seealso marker="kernel:gen_tcp#listen-2">gen_tcp:listen/2</seealso>, some options
-	that are used internally by httpd can not be set.</p>
+	that are used internally by httpd cannot be set.</p>
 	<p>For <c>SSL</c> configuration options, see 
 	<seealso marker="ssl:ssl#listen-2">ssl:listen/2</seealso>.</p>
 	<p>Default is <c>ip_comm</c>.</p> 
@@ -874,8 +874,8 @@ text/plain	asc txt</pre>
 
   <funcs>
     <func>
-      <name>info(Pid) -></name>
-      <name>info(Pid, Properties) -> [{Option, Value}]</name>
+      <name since="">info(Pid) -></name>
+      <name since="">info(Pid, Properties) -> [{Option, Value}]</name>
       <fsummary>Fetches information about the HTTP server.</fsummary>
       <type>
         <v>Properties = [property()]</v>
@@ -899,10 +899,10 @@ text/plain	asc txt</pre>
     </func>
 
     <func>
-      <name>info(Address, Port) ->  </name>
-      <name>info(Address, Port, Profile) ->  </name>
-      <name>info(Address, Port, Profile, Properties) -> [{Option, Value}] </name>
-      <name>info(Address, Port, Properties) -> [{Option, Value}] </name>
+      <name since="">info(Address, Port) ->  </name>
+      <name since="">info(Address, Port, Profile) ->  </name>
+      <name since="OTP 18.0">info(Address, Port, Profile, Properties) -> [{Option, Value}] </name>
+      <name since="">info(Address, Port, Properties) -> [{Option, Value}] </name>
       <fsummary>Fetches information about the HTTP server.</fsummary>
       <type>
 	<v>Address = ip_address()</v>
@@ -927,7 +927,7 @@ text/plain	asc txt</pre>
     </func>
     
     <func>
-      <name>reload_config(Config, Mode) -> ok | {error, Reason}</name>
+      <name since="">reload_config(Config, Mode) -> ok | {error, Reason}</name>
       <fsummary>Reloads the HTTP server configuration without
 	restarting the server.</fsummary>
       <type>
@@ -1051,7 +1051,7 @@ text/plain	asc txt</pre>
   </section>
   <funcs>
     <func>
-      <name>Module:do(ModData)-> {proceed, OldData} | {proceed, NewData} | {break, NewData} | done</name>
+      <name since="">Module:do(ModData)-> {proceed, OldData} | {proceed, NewData} | {break, NewData} | done</name>
       <fsummary>Called for each request to the web server.</fsummary>
       <type>
         <v>OldData = list()</v>
@@ -1105,7 +1105,7 @@ text/plain	asc txt</pre>
     </func>
 
     <func>
-      <name>Module:load(Line, AccIn)-> eof | ok | {ok, AccOut} | {ok, AccOut, {Option, Value}} | {ok, AccOut, [{Option, Value}]} | {error, Reason}</name>
+      <name since="">Module:load(Line, AccIn)-> eof | ok | {ok, AccOut} | {ok, AccOut, {Option, Value}} | {ok, AccOut, [{Option, Value}]} | {error, Reason}</name>
       <fsummary>Converts a line in an Apache-like config 
 	file to an <c>{Option, Value}</c> tuple.</fsummary>
       <type>
@@ -1128,7 +1128,7 @@ text/plain	asc txt</pre>
     </func>
     
     <func>
-      <name>Module:remove(ConfigDB) -> ok | {error, Reason} </name>
+      <name since="">Module:remove(ConfigDB) -> ok | {error, Reason} </name>
       <fsummary>Callback function that is called when the web server is closed.</fsummary>
       <type>
         <v>ConfigDB = ets_table()</v>
@@ -1143,7 +1143,7 @@ text/plain	asc txt</pre>
     </func>
     
     <func>
-      <name>Module:store({Option, Value}, Config)-> {ok, {Option, NewValue}} | {error, Reason}</name>
+      <name since="">Module:store({Option, Value}, Config)-> {ok, {Option, NewValue}} | {error, Reason}</name>
       <fsummary>Checks the validity of the configuration options.</fsummary>
       <type>
         <v>Line = string()</v>
@@ -1171,7 +1171,7 @@ text/plain	asc txt</pre>
   </section>
   <funcs>
     <func>
-      <name>parse_query(QueryString) -> [{Key,Value}]</name>
+      <name since="">parse_query(QueryString) -> [{Key,Value}]</name>
       <fsummary>Parses incoming data to <c>erl</c> and <c>eval</c> scripts.</fsummary>
       <type>
         <v>QueryString = string()</v>
diff --git a/lib/inets/doc/src/httpd_custom_api.xml b/lib/inets/doc/src/httpd_custom_api.xml
index d2e5441895..2c0f92ff83 100644
--- a/lib/inets/doc/src/httpd_custom_api.xml
+++ b/lib/inets/doc/src/httpd_custom_api.xml
@@ -25,7 +25,7 @@
     <title>httpd_custom_api</title>
     <file>httpd_custom_api.xml</file>
   </header>
-  <module>httpd_custom_api</module>
+  <module since="OTP 17.5.6">httpd_custom_api</module>
   <modulesummary>Behaviour with optional callbacks to customize the inets HTTP server.</modulesummary>
   <description>
     <p> The module implementing this behaviour shall be supplied to to the servers
@@ -34,7 +34,7 @@
   </description>  
   <funcs>
      <func>
-      <name>response_default_headers() -> [Header] </name>
+      <name since="OTP 18.1.1">response_default_headers() -> [Header] </name>
       <fsummary>Provide default headers for the HTTP servers responses.</fsummary>
       <type>
         <v>Header = {HeaderName :: string(), HeaderValue::string()}</v>
@@ -48,7 +48,7 @@
     </func>
     
     <func>
-      <name>response_header({HeaderName, HeaderValue}) ->  {true, Header} | false </name>
+      <name since="OTP 17.5.6">response_header({HeaderName, HeaderValue}) ->  {true, Header} | false </name>
       <fsummary>Filter and possible alter HTTP response headers.</fsummary>
       <type>
         <v>Header = {HeaderName :: string(), HeaderValue::string()}</v>
@@ -61,7 +61,7 @@
     </func>
    
     <func>
-      <name>request_header({HeaderName, HeaderValue}) ->   {true, Header} | false </name>
+      <name since="OTP 17.5.6">request_header({HeaderName, HeaderValue}) ->   {true, Header} | false </name>
       <fsummary>Filter and possible alter HTTP request headers.</fsummary>
       <type>
 	<v>Header = {HeaderName :: string(), HeaderValue::string()}</v>
diff --git a/lib/inets/doc/src/httpd_socket.xml b/lib/inets/doc/src/httpd_socket.xml
index d3aa82a540..22ead06f38 100644
--- a/lib/inets/doc/src/httpd_socket.xml
+++ b/lib/inets/doc/src/httpd_socket.xml
@@ -29,7 +29,7 @@
     <rev>2.2</rev>
     <file>httpd_socket.sgml</file>
   </header>
-  <module>httpd_socket</module>
+  <module since="">httpd_socket</module>
   <modulesummary>Communication utility functions to be used by the Erlang
     web server API programmer.</modulesummary>
   <description>
@@ -43,7 +43,7 @@
 
   <funcs>
     <func>
-      <name>deliver(SocketType, Socket, Data) -> Result</name>
+      <name since="">deliver(SocketType, Socket, Data) -> Result</name>
       <fsummary>Sends binary data over socket.</fsummary>
       <type>
         <v>SocketType = socket_type()</v>
@@ -63,7 +63,7 @@
     </func>
 
     <func>
-      <name>peername(SocketType,Socket) -> {Port,IPAddress}</name>
+      <name since="">peername(SocketType,Socket) -> {Port,IPAddress}</name>
       <fsummary>Returns the port and IP address of the remote socket.</fsummary>
       <type>
         <v>SocketType = socket_type()</v>
@@ -81,7 +81,7 @@
     </func>
 
     <func>
-      <name>resolve() -> HostName</name>
+      <name since="">resolve() -> HostName</name>
       <fsummary>Returns the official name of the current host.</fsummary>
       <type>
         <v>HostName = string()</v>
diff --git a/lib/inets/doc/src/httpd_util.xml b/lib/inets/doc/src/httpd_util.xml
index 220a2ede35..e0f947f860 100644
--- a/lib/inets/doc/src/httpd_util.xml
+++ b/lib/inets/doc/src/httpd_util.xml
@@ -29,7 +29,7 @@
     <rev>2.2</rev>
     <file>httpd_util.sgml</file>
   </header>
-  <module>httpd_util</module>
+  <module since="">httpd_util</module>
   <modulesummary>Miscellaneous utility functions to be used when implementing 
   Erlang web server API modules.</modulesummary>
   <description>
@@ -41,12 +41,11 @@
 
   <funcs>
     <func>
-      <name>convert_request_date(DateString) -> ErlDate|bad_date</name>
+      <name since="">convert_request_date(DateString) -> ErlDate|bad_date</name>
       <fsummary>Converts the date to the Erlang date format.</fsummary>
       <type>
         <v>DateString = string()</v>
-        <v>ErlDate = {{Year,Month,Date},{Hour,Min,Sec}}</v>
-        <v>Year = Month = Date = Hour = Min = Sec = integer()</v>
+        <v>ErlDate = calendar:datetime() </v>
       </type>
       <desc>
         <p><c>convert_request_date/1</c> converts <c>DateString</c> to 
@@ -57,7 +56,7 @@
     </func>
 
     <func>
-      <name>create_etag(FileInfo) -> Etag</name>
+      <name since="">create_etag(FileInfo) -> Etag</name>
       <fsummary>Calculates the Etag for a file.</fsummary>
       <type>
         <v>FileInfo = file_info()</v>
@@ -71,7 +70,7 @@
     </func>
     
     <func>
-      <name>day(NthDayOfWeek) -> DayOfWeek</name>
+      <name since="">day(NthDayOfWeek) -> DayOfWeek</name>
       <fsummary>Converts the day of the week 
       (integer [1-7]) to an abbreviated string.</fsummary>
       <type>
@@ -87,7 +86,7 @@
     </func>
 
     <func>
-      <name>decode_hex(HexValue) -> DecValue</name>
+      <name since="">decode_hex(HexValue) -> DecValue</name>
       <fsummary>Converts a hexadecimal value into its decimal equivalent.</fsummary>
       <type>
         <v>HexValue = DecValue = string()</v>
@@ -99,7 +98,7 @@
     </func>
     
     <func>
-      <name>flatlength(NestedList) -> Size</name>
+      <name since="">flatlength(NestedList) -> Size</name>
       <fsummary>Computes the size of a possibly nested list.</fsummary>
       <type>
         <v>NestedList = list()</v>
@@ -112,7 +111,7 @@
     </func>
 
     <func>
-      <name>hexlist_to_integer(HexString) -> Number</name>
+      <name since="">hexlist_to_integer(HexString) -> Number</name>
       <fsummary>Converts a hexadecimal string to an integer.</fsummary>
       <type>
         <v>Number = integer()</v>
@@ -125,7 +124,7 @@
     </func>
 
     <func>
-      <name>integer_to_hexlist(Number) -> HexString</name>
+      <name since="">integer_to_hexlist(Number) -> HexString</name>
       <fsummary>Converts an integer to a hexadecimal string.</fsummary>
       <type>
         <v>Number = integer()</v>
@@ -138,8 +137,8 @@
     </func>
 
     <func>
-      <name>lookup(ETSTable,Key) -> Result</name>
-      <name>lookup(ETSTable,Key,Undefined) -> Result</name>
+      <name since="">lookup(ETSTable,Key) -> Result</name>
+      <name since="">lookup(ETSTable,Key,Undefined) -> Result</name>
       <fsummary>Extracts the first value associated with a <c>Key</c> 
       in an ETS table.</fsummary>
       <type>
@@ -160,8 +159,8 @@
     </func>
 
     <func>
-      <name>lookup_mime(ConfigDB,Suffix)</name>
-      <name>lookup_mime(ConfigDB,Suffix,Undefined) -> MimeType</name>
+      <name since="">lookup_mime(ConfigDB,Suffix)</name>
+      <name since="">lookup_mime(ConfigDB,Suffix,Undefined) -> MimeType</name>
       <fsummary>Returns the MIME type associated with a specific file suffix.</fsummary>
       <type>
         <v>ConfigDB = ets_table()</v>
@@ -179,8 +178,8 @@
     </func>
 
     <func>
-      <name>lookup_mime_default(ConfigDB,Suffix)</name>
-      <name>lookup_mime_default(ConfigDB,Suffix,Undefined) -> MimeType</name>
+      <name since="">lookup_mime_default(ConfigDB,Suffix)</name>
+      <name since="">lookup_mime_default(ConfigDB,Suffix,Undefined) -> MimeType</name>
       <fsummary>Returns the MIME type associated with a specific file suffix 
       or the value of the DefaultType.</fsummary>
       <type>
@@ -201,7 +200,7 @@
     </func>
 
     <func>
-      <name>message(StatusCode,PhraseArgs,ConfigDB) -> Message</name>
+      <name since="">message(StatusCode,PhraseArgs,ConfigDB) -> Message</name>
       <fsummary>Returns an informative HTTP 1.1 status string in HTML.</fsummary>
       <type>
         <v>StatusCode = 301 | 400 | 403 | 404 | 500 | 501 | 504</v>
@@ -236,7 +235,7 @@
     </func>
 
     <func>
-      <name>month(NthMonth) -> Month</name>
+      <name since="">month(NthMonth) -> Month</name>
       <fsummary>Converts the month as an integer (1-12) to an abbreviated string.</fsummary>
       <type>
         <v>NthMonth = 1-12</v>
@@ -250,7 +249,7 @@
     </func>
 
     <func>
-      <name>multi_lookup(ETSTable,Key) -> Result</name>
+      <name since="">multi_lookup(ETSTable,Key) -> Result</name>
       <fsummary>Extracts the values associated with a key in an ETS table.</fsummary>
       <type>
         <v>ETSTable = ets_table()</v>
@@ -265,7 +264,7 @@
     </func>
 
     <func>
-      <name>reason_phrase(StatusCode) -> Description</name>
+      <name since="">reason_phrase(StatusCode) -> Description</name>
       <fsummary>Returns the description of an HTTP 1.1 status code.</fsummary>
       <type>
         <v>StatusCode = 100| 200 | 201 | 202 | 204 | 205 | 206 | 300 | 301 | 302 | 303 | 304 | 400 | 401 | 402 | 403 | 404 | 405 | 406 | 410 411 | 412 | 413 | 414 415 | 416 | 417 | 500 | 501 | 502 | 503 | 504 | 505</v>
@@ -280,11 +279,11 @@
     </func>
 
     <func>
-      <name>rfc1123_date() -> RFC1123Date</name>
-      <name>rfc1123_date({{YYYY,MM,DD},{Hour,Min,Sec}}) -> RFC1123Date</name>
+      <name since="">rfc1123_date() -> RFC1123Date</name>
+      <name since="">rfc1123_date(Date) -> RFC1123Date</name>
       <fsummary>Returns the current date in RFC 1123 format.</fsummary>
       <type>
-        <v>YYYY = MM = DD = Hour = Min = Sec = integer()</v>
+        <v> Date = calendar:datetime()</v>
         <v>RFC1123Date = string()</v>
       </type>
       <desc>
@@ -295,7 +294,7 @@
     </func>
 
     <func>
-      <name>split(String,RegExp,N) -> SplitRes</name>
+      <name since="">split(String,RegExp,N) -> SplitRes</name>
       <fsummary>Splits a string in N chunks using a regular expression.</fsummary>
       <type>
         <v>String = RegExp = string()</v>
@@ -313,7 +312,7 @@
     </func>
 
     <func>
-      <name>split_script_path(RequestLine) -> Splitted</name>
+      <name since="">split_script_path(RequestLine) -> Splitted</name>
       <fsummary>Splits a <c>RequestLine</c> in a file reference to an executable, 
       and a <c>QueryString</c> or a <c>PathInfo</c>string.</fsummary>
       <type>
@@ -330,7 +329,7 @@
     </func>
 
     <func>
-      <name>split_path(RequestLine) -> {Path,QueryStringOrPathInfo}</name>
+      <name since="">split_path(RequestLine) -> {Path,QueryStringOrPathInfo}</name>
       <fsummary>Splits a <c>RequestLine</c> in a file reference, and a 
       <c>QueryString</c> or a <c>PathInfo</c> string.</fsummary>
       <type>
@@ -356,7 +355,7 @@
     </func>
 
     <func>
-      <name>strip(String) -> Stripped</name>
+      <name since="">strip(String) -> Stripped</name>
       <fsummary>Returns <c>String</c> where the leading and trailing space 
       tabs are removed.</fsummary>
       <type>
@@ -370,7 +369,7 @@
     </func>
 
     <func>
-      <name>suffix(FileName) -> Suffix</name>
+      <name since="">suffix(FileName) -> Suffix</name>
       <fsummary>Extracts the file suffix from a given filename.</fsummary>
       <type>
         <v>FileName = Suffix = string()</v>
diff --git a/lib/inets/doc/src/inets.xml b/lib/inets/doc/src/inets.xml
index 9b0ffaad5e..176af3137a 100644
--- a/lib/inets/doc/src/inets.xml
+++ b/lib/inets/doc/src/inets.xml
@@ -29,7 +29,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>inets</module>
+  <module since="">inets</module>
   <modulesummary>The Inets services API.</modulesummary>
   <description>
     <p>This module provides the most basic API to the 
@@ -51,7 +51,7 @@
 
   <funcs>
     <func>
-      <name>services() -> [{Service, Pid}]</name>
+      <name since="">services() -> [{Service, Pid}]</name>
       <fsummary>Returns a list of currently running services.</fsummary>
       <type>
         <v>Service = service()</v>
@@ -68,7 +68,7 @@
     </func>
 
     <func>
-      <name>services_info() -> [{Service, Pid, Info}]</name>
+      <name since="">services_info() -> [{Service, Pid, Info}]</name>
       <fsummary>Returns a list of currently running services where
       each service is described by an <c>[{Option, Value}]</c>
       list.</fsummary>
@@ -91,7 +91,7 @@
     </func>
     
     <func>
-      <name>service_names() -> [Service] </name>
+      <name since="">service_names() -> [Service] </name>
       <fsummary>Returns a list of available service names.</fsummary>
       <type>
 	<v>Service = service()</v>
@@ -104,8 +104,8 @@
     </func>
     
     <func>
-      <name>start() -> </name>
-      <name>start(Type) -> ok | {error, Reason}</name>
+      <name since="">start() -> </name>
+      <name since="">start(Type) -> ok | {error, Reason}</name>
       <fsummary>Starts the <c>Inets</c> application.</fsummary>
       <type>
         <v>Type = permanent | transient | temporary</v>
@@ -120,8 +120,8 @@
     </func>
 
     <func>
-      <name>start(Service, ServiceConfig) -> {ok, Pid} | {error, Reason}</name>
-      <name>start(Service, ServiceConfig, How) -> {ok, Pid} | {error, Reason}</name>
+      <name since="">start(Service, ServiceConfig) -> {ok, Pid} | {error, Reason}</name>
+      <name since="">start(Service, ServiceConfig, How) -> {ok, Pid} | {error, Reason}</name>
       <fsummary>Dynamically starts an <c>Inets</c>
       service after the <c>Inets</c> application has been started.</fsummary>
       <type>
@@ -156,7 +156,7 @@
     </func>
 
      <func>
-      <name>stop() -> ok </name>
+      <name since="">stop() -> ok </name>
       <fsummary>Stops the <c>Inets</c> application.</fsummary>
       <desc>
         <p>Stops the <c>Inets</c> application. See also
@@ -167,7 +167,7 @@
     </func>
     
     <func>
-      <name>stop(Service, Reference) -> ok | {error, Reason} </name>
+      <name since="">stop(Service, Reference) -> ok | {error, Reason} </name>
       <fsummary>Stops a started service of the <c>Inets</c> application or takes
           down a <c>stand_alone </c>service gracefully.</fsummary>
       <type>
diff --git a/lib/inets/doc/src/mod_alias.xml b/lib/inets/doc/src/mod_alias.xml
index 6ae19700a5..ff57d49d08 100644
--- a/lib/inets/doc/src/mod_alias.xml
+++ b/lib/inets/doc/src/mod_alias.xml
@@ -29,7 +29,7 @@
     <rev>2.2</rev>
     <file>mod_alias.sgml</file>
   </header>
-  <module>mod_alias</module>
+  <module since="">mod_alias</module>
   <modulesummary>URL aliasing.</modulesummary>
   <description>
     <p>Erlang web server internal API for handling of, for example,
@@ -40,7 +40,7 @@
 
   <funcs>
     <func>
-      <name>default_index(ConfigDB, Path) -> NewPath</name>
+      <name since="">default_index(ConfigDB, Path) -> NewPath</name>
       <fsummary>Returns a new path with the default resource or file appended.</fsummary>
       <type>
         <v>ConfigDB = config_db()</v>
@@ -64,7 +64,7 @@
     </func>
 
     <func>
-      <name>path(PathData, ConfigDB, RequestURI) -> Path</name>
+      <name since="">path(PathData, ConfigDB, RequestURI) -> Path</name>
       <fsummary>Returns the file path to a URL.</fsummary>
       <type>
         <v>PathData = interaction_data()</v>
@@ -89,7 +89,7 @@
     </func>
 
     <func>
-      <name>real_name(ConfigDB, RequestURI, Aliases) -> Ret</name>
+      <name since="">real_name(ConfigDB, RequestURI, Aliases) -> Ret</name>
       <fsummary>Expands a request URI using <c>Aliases</c> config directives.</fsummary>
       <type>
         <v>ConfigDB = config_db()</v>
@@ -120,7 +120,7 @@
     </func>
 
     <func>
-      <name>real_script_name(ConfigDB, RequestURI, ScriptAliases) -> Ret</name>
+      <name since="">real_script_name(ConfigDB, RequestURI, ScriptAliases) -> Ret</name>
       <fsummary>Expands a request URI using <c>ScriptAliases</c> 
       config directives.</fsummary>
       <type>
diff --git a/lib/inets/doc/src/mod_auth.xml b/lib/inets/doc/src/mod_auth.xml
index c4f844622b..ad864ca4d1 100644
--- a/lib/inets/doc/src/mod_auth.xml
+++ b/lib/inets/doc/src/mod_auth.xml
@@ -29,7 +29,7 @@
     <rev>2.3</rev>
     <file>mod_auth.sgml</file>
   </header>
-  <module>mod_auth</module>
+  <module since="">mod_auth</module>
   <modulesummary>User authentication using text files, Dets, or Mnesia database.</modulesummary>
   <description>
     <p>This module provides for basic user authentication using
@@ -38,9 +38,9 @@
 
   <funcs>
      <func>
-      <name>add_group_member(GroupName, UserName, Options) -> true | {error, Reason}</name>
-      <name>add_group_member(GroupName, UserName, Port, Dir) -> true | {error, Reason}</name>
-      <name>add_group_member(GroupName, UserName, Address, Port, Dir) -> true | {error, Reason}</name>
+      <name since="">add_group_member(GroupName, UserName, Options) -> true | {error, Reason}</name>
+      <name since="">add_group_member(GroupName, UserName, Port, Dir) -> true | {error, Reason}</name>
+      <name since="">add_group_member(GroupName, UserName, Address, Port, Dir) -> true | {error, Reason}</name>
       <fsummary>Adds a user to a group.</fsummary>
       <type>
         <v>GroupName = string()</v>
@@ -65,9 +65,9 @@
     </func>
     
     <func>
-      <name>add_user(UserName, Options) -> true| {error, Reason}</name>
-      <name>add_user(UserName, Password, UserData, Port, Dir) -> true | {error, Reason}</name>
-      <name>add_user(UserName, Password, UserData, Address, Port, Dir) -> true | {error, Reason}</name>
+      <name since="">add_user(UserName, Options) -> true| {error, Reason}</name>
+      <name since="">add_user(UserName, Password, UserData, Port, Dir) -> true | {error, Reason}</name>
+      <name since="">add_user(UserName, Password, UserData, Address, Port, Dir) -> true | {error, Reason}</name>
       <fsummary>Adds a user to the user database.</fsummary>
       <type>
         <v>UserName = string()</v>
@@ -92,8 +92,8 @@
     </func>
 
      <func>
-      <name>delete_group(GroupName, Options) -> true | {error,Reason} &lt;name>delete_group(GroupName, Port, Dir) -> true | {error, Reason}</name>
-      <name>delete_group(GroupName, Address, Port, Dir) -> true | {error, Reason}</name>
+      <name since="">delete_group(GroupName, Options) -> true | {error,Reason} &lt;name>delete_group(GroupName, Port, Dir) -> true | {error, Reason}</name>
+      <name since="">delete_group(GroupName, Address, Port, Dir) -> true | {error, Reason}</name>
       <fsummary>Deletes a group.</fsummary>
       <type>
         <v>Options = [Option]</v>
@@ -115,9 +115,9 @@
     </func>
 
      <func>
-      <name>delete_group_member(GroupName, UserName, Options) -> true | {error, Reason}</name>
-      <name>delete_group_member(GroupName, UserName, Port, Dir) -> true | {error, Reason}</name>
-      <name>delete_group_member(GroupName, UserName, Address, Port, Dir) -> true | {error, Reason}</name>
+      <name since="">delete_group_member(GroupName, UserName, Options) -> true | {error, Reason}</name>
+      <name since="">delete_group_member(GroupName, UserName, Port, Dir) -> true | {error, Reason}</name>
+      <name since="">delete_group_member(GroupName, UserName, Address, Port, Dir) -> true | {error, Reason}</name>
       <fsummary>Removes a user from a group.</fsummary>
       <type>
         <v>GroupName = string()</v>
@@ -141,9 +141,9 @@
     </func>
     
     <func>
-      <name>delete_user(UserName,Options) -> true | {error, Reason}</name>
-      <name>delete_user(UserName, Port, Dir) -> true | {error, Reason}</name>
-      <name>delete_user(UserName, Address, Port, Dir) -> true | {error, Reason}</name>
+      <name since="">delete_user(UserName,Options) -> true | {error, Reason}</name>
+      <name since="">delete_user(UserName, Port, Dir) -> true | {error, Reason}</name>
+      <name since="">delete_user(UserName, Address, Port, Dir) -> true | {error, Reason}</name>
       <fsummary>Deletes a user from the user database.</fsummary>
       <type>
         <v>UserName = string()</v>
@@ -166,9 +166,9 @@
     </func>
 
     <func>
-      <name>get_user(UserName,Options) -> {ok, #httpd_user} |{error, Reason}</name>
-      <name>get_user(UserName, Port, Dir) -> {ok, #httpd_user} | {error, Reason}</name>
-      <name>get_user(UserName, Address, Port, Dir) -> {ok, #httpd_user} | {error, Reason}</name>
+      <name since="">get_user(UserName,Options) -> {ok, #httpd_user} |{error, Reason}</name>
+      <name since="">get_user(UserName, Port, Dir) -> {ok, #httpd_user} | {error, Reason}</name>
+      <name since="">get_user(UserName, Address, Port, Dir) -> {ok, #httpd_user} | {error, Reason}</name>
       <fsummary>Returns a user from the user database.</fsummary>
       <type>
         <v>UserName = string()</v>
@@ -190,9 +190,9 @@
     </func>
 
      <func>
-      <name>list_groups(Options) -> {ok, Groups} | {error, Reason}</name>
-      <name>list_groups(Port, Dir) -> {ok, Groups} | {error, Reason}</name>
-      <name>list_groups(Address, Port, Dir) -> {ok, Groups} | {error, Reason}</name>
+      <name since="">list_groups(Options) -> {ok, Groups} | {error, Reason}</name>
+      <name since="">list_groups(Port, Dir) -> {ok, Groups} | {error, Reason}</name>
+      <name since="">list_groups(Address, Port, Dir) -> {ok, Groups} | {error, Reason}</name>
       <fsummary>Lists all the groups.</fsummary>
       <type>
         <v>Options = [Option]</v>
@@ -214,9 +214,9 @@
     </func>
    
     <func>
-      <name>list_group_members(GroupName, Options) -> {ok, Users} | {error, Reason}</name>
-      <name>list_group_members(GroupName, Port, Dir) -> {ok, Users} | {error, Reason}</name>
-      <name>list_group_members(GroupName, Address, Port, Dir) -> {ok, Users} | {error, Reason}</name>
+      <name since="">list_group_members(GroupName, Options) -> {ok, Users} | {error, Reason}</name>
+      <name since="">list_group_members(GroupName, Port, Dir) -> {ok, Users} | {error, Reason}</name>
+      <name since="">list_group_members(GroupName, Address, Port, Dir) -> {ok, Users} | {error, Reason}</name>
       <fsummary>Lists the members of a group.</fsummary>
       <type>
         <v>GroupName = string()</v>
@@ -240,9 +240,9 @@
     </func>
 
      <func>
-      <name>list_users(Options) -> {ok, Users} | {error, Reason}</name>
-      <name>list_users(Port, Dir) -> {ok, Users} | {error, Reason}</name>
-      <name>list_users(Address, Port, Dir) -> {ok, Users} | {error, Reason}</name>
+      <name since="">list_users(Options) -> {ok, Users} | {error, Reason}</name>
+      <name since="OTP R14B01">list_users(Port, Dir) -> {ok, Users} | {error, Reason}</name>
+      <name since="">list_users(Address, Port, Dir) -> {ok, Users} | {error, Reason}</name>
       <fsummary>Lists users in the user database.</fsummary>
       <type>
         <v>Options = [Option]</v>
@@ -264,8 +264,8 @@
     </func>
     
     <func>
-      <name>update_password(Port, Dir, OldPassword, NewPassword, NewPassword) -> ok | {error, Reason}</name>
-      <name>update_password(Address,Port, Dir, OldPassword, NewPassword, NewPassword) -> ok | {error, Reason}</name>
+      <name since="">update_password(Port, Dir, OldPassword, NewPassword, NewPassword) -> ok | {error, Reason}</name>
+      <name since="">update_password(Address,Port, Dir, OldPassword, NewPassword, NewPassword) -> ok | {error, Reason}</name>
       <fsummary>Changes <c>AuthAcessPassword</c>.</fsummary>
       <type>
         <v>Port = integer()</v>
diff --git a/lib/inets/doc/src/mod_esi.xml b/lib/inets/doc/src/mod_esi.xml
index ede7dc8f7d..bc5f98068f 100644
--- a/lib/inets/doc/src/mod_esi.xml
+++ b/lib/inets/doc/src/mod_esi.xml
@@ -25,7 +25,7 @@
     <title>mod_esi</title>
     <file>mod_esi.sgml</file>
   </header>
-  <module>mod_esi</module>
+  <module since="">mod_esi</module>
   <modulesummary>Erlang Server Interface</modulesummary>
   <description>
     <p>This module defines the Erlang Server Interface (ESI) API.
@@ -88,7 +88,7 @@
 
  <funcs>
    <func>
-     <name>deliver(SessionID, Data) -> ok | {error, Reason}</name>
+     <name since="">deliver(SessionID, Data) -> ok | {error, Reason}</name>
      <fsummary>Sends <c>Data</c> back to client.</fsummary>
      <type>
         <v>SessionID = term()</v>
@@ -121,7 +121,7 @@
 
  <funcs>
    <func>
-     <name>Module:Function(SessionID, Env, Input)-> {continue, State} | _ </name>
+     <name since="">Module:Function(SessionID, Env, Input)-> {continue, State} | _ </name>
      <fsummary>Creates a dynamic web page and returns it chunk by chunk 
      to the server process by calling <c>mod_esi:deliver/2</c>.</fsummary>
      <type>
@@ -179,7 +179,7 @@
    </func>
 
    <func>
-     <name>Module:Function(Env, Input)-> Response </name>
+     <name since="">Module:Function(Env, Input)-> Response </name>
      <fsummary>Creates a dynamic web page and returns it as a list. 
      This function is deprecated and is only kept for backwards compatibility.</fsummary>
      <type>
diff --git a/lib/inets/doc/src/mod_security.xml b/lib/inets/doc/src/mod_security.xml
index 6f3f3c048a..c26d7468c2 100644
--- a/lib/inets/doc/src/mod_security.xml
+++ b/lib/inets/doc/src/mod_security.xml
@@ -29,7 +29,7 @@
     <rev>1.0</rev>
     <file>mod_security.sgml</file>
   </header>
-  <module>mod_security</module>
+  <module since="">mod_security</module>
   <modulesummary>Security Audit and Trailing Functionality</modulesummary>
   <description>
     <p>Security Audit and Trailing Functionality</p>
@@ -37,8 +37,8 @@
   <funcs>
 
       <func>
-      <name>block_user(User, Port, Dir, Seconds) -> true | {error, Reason}</name>
-      <name>block_user(User, Address, Port, Dir, Seconds) -> true | {error, Reason}</name>
+      <name since="">block_user(User, Port, Dir, Seconds) -> true | {error, Reason}</name>
+      <name since="">block_user(User, Address, Port, Dir, Seconds) -> true | {error, Reason}</name>
       <fsummary>Blocks a user from access to a directory for a certain amount of time.</fsummary>
       <type>
         <v>User = string()</v>
@@ -56,10 +56,10 @@
     </func>
     
     <func>
-      <name>list_auth_users(Port) -> Users | []</name>
-      <name>list_auth_users(Address, Port) -> Users | []</name>
-      <name>list_auth_users(Port, Dir) -> Users | []</name>
-      <name>list_auth_users(Address, Port, Dir) -> Users | []</name>
+      <name since="">list_auth_users(Port) -> Users | []</name>
+      <name since="">list_auth_users(Address, Port) -> Users | []</name>
+      <name since="">list_auth_users(Port, Dir) -> Users | []</name>
+      <name since="">list_auth_users(Address, Port, Dir) -> Users | []</name>
       <fsummary>Lists users that have authenticated within the <c>SecurityAuthTimeout</c> 
       time for a given address (if specified), port number, and directory 
       (if specified).</fsummary>
@@ -77,10 +77,10 @@
       </desc>
     </func>
     <func>
-      <name>list_blocked_users(Port) -> Users | []</name>
-      <name>list_blocked_users(Address, Port) -> Users | []</name>
-      <name>list_blocked_users(Port, Dir) -> Users | []</name>
-      <name>list_blocked_users(Address, Port, Dir) -> Users | []</name>
+      <name since="">list_blocked_users(Port) -> Users | []</name>
+      <name since="">list_blocked_users(Address, Port) -> Users | []</name>
+      <name since="">list_blocked_users(Port, Dir) -> Users | []</name>
+      <name since="">list_blocked_users(Address, Port, Dir) -> Users | []</name>
       <fsummary>Lists users that are currently blocked from access to a 
       specified port number, for a given address (if specified).</fsummary>
       <type>
@@ -97,10 +97,10 @@
     </func>
   
     <func>
-      <name>unblock_user(User, Port) -> true | {error, Reason}</name>
-      <name>unblock_user(User, Address, Port) -> true | {error, Reason}</name>
-      <name>unblock_user(User, Port, Dir) -> true | {error, Reason}</name>
-      <name>unblock_user(User, Address, Port, Dir) -> true | {error, Reason}</name>
+      <name since="">unblock_user(User, Port) -> true | {error, Reason}</name>
+      <name since="">unblock_user(User, Address, Port) -> true | {error, Reason}</name>
+      <name since="">unblock_user(User, Port, Dir) -> true | {error, Reason}</name>
+      <name since="">unblock_user(User, Address, Port, Dir) -> true | {error, Reason}</name>
       <fsummary>Removes a blocked user from the block list.</fsummary>
       <type>
         <v>User = string()</v>
@@ -129,8 +129,8 @@
 
   <funcs>
     <func>
-      <name>Module:event(What, Port, Dir, Data) -> ignored</name>
-      <name>Module:event(What, Address, Port, Dir, Data) -> ignored</name>
+      <name since="OTP 18.1">Module:event(What, Port, Dir, Data) -> ignored</name>
+      <name since="OTP 18.1">Module:event(What, Address, Port, Dir, Data) -> ignored</name>
       <fsummary>Called whenever an event occurs in <c>mod_security</c>.</fsummary>
       <type>
         <v>What = atom()</v>
diff --git a/lib/inets/doc/src/notes.xml b/lib/inets/doc/src/notes.xml
index 12f5acb2e9..91dd9cd6ed 100644
--- a/lib/inets/doc/src/notes.xml
+++ b/lib/inets/doc/src/notes.xml
@@ -33,7 +33,83 @@
     <file>notes.xml</file>
   </header>
   
-  <section><title>Inets 7.0.3</title>
+  <section><title>Inets 7.0.6</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Fix the internal handling of the option
+	    erl_script_timeout in httpd. When httpd was started with
+	    explicit erl_script_timeout, the value of the option was
+	    converted to milliseconds before storage. Subsequent
+	    calls to httpd:info/1 returned the input value multiplied
+	    by 1000.</p>
+          <p>
+	    This change fixes the handing of erl_script_timeout by
+	    storing the timeout in seconds and converting to
+	    milliseconds before usage.</p>
+          <p>
+	    Own Id: OTP-15669 Aux Id: ERIERL-321 </p>
+        </item>
+      </list>
+    </section>
+
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+          <p>
+	    Enhance documentation</p>
+          <p>
+	    Own Id: OTP-15508 Aux Id: ERL-816 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>Inets 7.0.5</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Fixed bug that causes a crash in http client when using
+	    hostnames (e.g. localhost) with the the option
+	    ipv6_host_with_brackets set to true.</p>
+          <p>
+	    This change also fixes a regression: httpc:request fails
+	    with connection error (nxdomain) if option
+	    ipv6_host_with_brackets set to true and host component of
+	    the URI is an IPv6 address.</p>
+          <p>
+	    Own Id: OTP-15554 Aux Id: ERIERL-289 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>Inets 7.0.4</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Make sure ipv6 addresses with brackets in URIs are
+	    converted correctly before passing to lower level
+	    functions like gen_tcp and ssl functions. Could cause
+	    connection to fail.</p>
+          <p>
+	    Own Id: OTP-15544 Aux Id: ERIERL-289 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>Inets 7.0.3</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
       <list>
@@ -1301,7 +1377,7 @@
 	    Add option {ftp_extension, boolean} to enable use of
 	    extended commands EPSV and EPRT, as specified in RFC
 	    2428, for IPv4 instead of using the legacy commands. Ipv6
-	    can not be supported without the extended commands.</p>
+	    cannot be supported without the extended commands.</p>
           <p>
 	    Own Id: OTP-12255</p>
         </item>
diff --git a/lib/inets/doc/src/notes_history.xml b/lib/inets/doc/src/notes_history.xml
index c12899e614..1523827db9 100644
--- a/lib/inets/doc/src/notes_history.xml
+++ b/lib/inets/doc/src/notes_history.xml
@@ -1149,8 +1149,8 @@
     <list type="bulleted">
       <item>
 	<p>When further testing the functionality of https requests
-	  that goes through a proxy. We realised that alas this can
-	  not currently be supported as it requires features from
+	  that goes through a proxy. We realised that alas this
+	  cannot currently be supported as it requires features from
 	  the ssl implementation that is not currently available.
 	  So for now an error message will be returned when trying
 	  to use this functionality.</p>
diff --git a/lib/inets/examples/httpd_load_test/hdlt_slave.erl b/lib/inets/examples/httpd_load_test/hdlt_slave.erl
index 5ee005629d..30ddfd76af 100644
--- a/lib/inets/examples/httpd_load_test/hdlt_slave.erl
+++ b/lib/inets/examples/httpd_load_test/hdlt_slave.erl
@@ -44,18 +44,17 @@
 %% this to work is that the 'erl' program can be found in PATH.
 %%
 %% If the master and slave are on different hosts, start/N uses
-%% the 'rsh' program to spawn an Erlang node on the other host.
+%% the 'ssh' program to spawn an Erlang node on the other host.
 %% Alternative, if the master was started as
 %% 'erl -sname xxx -rsh my_rsh...', then 'my_rsh' will be used instead
-%% of 'rsh' (this is useful for systems where the rsh program is named
-%% 'remsh').
+%% of 'ssh' (this is useful for systems still using rsh or remsh).
 %%
 %% For this to work, the following conditions must be fulfilled:
 %%
-%% 1. There must be an Rsh program on computer; if not an error
+%% 1. There must be an ssh program on computer; if not an error
 %%    is returned.
 %%
-%% 2. The hosts must be configured to allowed 'rsh' access without
+%% 2. The hosts must be configured to allow 'ssh' access without
 %%    prompts for password.
 %%
 %% The slave node will have its filer and user server redirected
@@ -244,7 +243,7 @@ register_unique_name(Number) ->
 
 %% Makes up the command to start the nodes.
 %% If the node should run on the local host, there is
-%% no need to use rsh.
+%% no need to use ssh.
 
 mk_cmd(Host, Name, Paths, Args, Waiter, Prog) ->
     PaPaths = [[" -pa ", Path] || Path <- Paths], 
diff --git a/lib/inets/src/http_client/httpc_cookie.erl b/lib/inets/src/http_client/httpc_cookie.erl
index cbf428ab3e..2e647a1438 100644
--- a/lib/inets/src/http_client/httpc_cookie.erl
+++ b/lib/inets/src/http_client/httpc_cookie.erl
@@ -271,7 +271,7 @@ lookup_cookies(CookieDb, Host, Path) ->
 lookup_domain_cookies(_CookieDb, [], AccCookies) ->
     lists:flatten(AccCookies);
 
-%% Top domains can not have cookies
+%% Top domains cannot have cookies
 lookup_domain_cookies(_CookieDb, [_], AccCookies) ->
     lists:flatten(AccCookies);
 
diff --git a/lib/inets/src/http_client/httpc_handler.erl b/lib/inets/src/http_client/httpc_handler.erl
index 1bf5d25c98..8d443a1477 100644
--- a/lib/inets/src/http_client/httpc_handler.erl
+++ b/lib/inets/src/http_client/httpc_handler.erl
@@ -809,7 +809,7 @@ connect_and_send_first_request(Address, Request, #state{options = Options0} = St
     SocketType  = socket_type(Request),
     ConnTimeout = (Request#request.settings)#http_options.connect_timeout,
     Options = handle_unix_socket_options(Request, Options0),
-    case connect(SocketType, Address, Options, ConnTimeout) of
+    case connect(SocketType, format_address(Address), Options, ConnTimeout) of
         {ok, Socket} ->
             ClientClose =
 		httpc_request:is_client_closing(
@@ -1738,4 +1738,8 @@ update_session(ProfileName, #session{id = SessionId} = Session, Pos, Value) ->
                      {stacktrace, Stacktrace}]}}
     end.
 
-
+format_address({[$[|T], Port}) ->
+    {ok, Address} = inet:parse_address(string:strip(T, right, $])),
+    {Address, Port};
+format_address(HostPort) ->
+    HostPort.
diff --git a/lib/inets/src/http_client/httpc_manager.erl b/lib/inets/src/http_client/httpc_manager.erl
index 0333442bf2..0dc0483fa9 100644
--- a/lib/inets/src/http_client/httpc_manager.erl
+++ b/lib/inets/src/http_client/httpc_manager.erl
@@ -863,7 +863,7 @@ select_session(Candidates, _, Max, pipeline) ->
     select_session(Candidates, Max).
 
 select_session([] = _Candidates, _Max) ->
-    ?hcrd("select session - no candicate", []),
+    ?hcrd("select session - no candidate", []),
     no_connection; 
 select_session(Candidates, Max) ->
     NewCandidates = 
diff --git a/lib/inets/src/http_client/httpc_response.erl b/lib/inets/src/http_client/httpc_response.erl
index 78d6b4ed24..bb6b76da89 100644
--- a/lib/inets/src/http_client/httpc_response.erl
+++ b/lib/inets/src/http_client/httpc_response.erl
@@ -398,7 +398,7 @@ redirect(Response = {_, Headers, _}, Request) ->
                     THost = http_util:maybe_add_brackets(maps:get(host, URIMap), Brackets),
                     TPort = maps:get(port, URIMap),
                     TPath = maps:get(path, URIMap),
-                    TQuery = maps:get(query, URIMap, ""),
+                    TQuery = add_question_mark(maps:get(query, URIMap, "")),
                     NewURI = uri_string:normalize(
                                uri_string:recompose(URIMap)),
                     HostPort = http_request:normalize_host(TScheme, THost, TPort),
@@ -417,6 +417,14 @@ redirect(Response = {_, Headers, _}, Request) ->
             end
     end.
 
+add_question_mark(<<>>) ->
+    <<>>;
+add_question_mark([]) ->
+    [];
+add_question_mark(Comp) when is_binary(Comp) ->
+    <<$?, Comp/binary>>;
+add_question_mark(Comp) when is_list(Comp) ->
+    [$?|Comp].
 
 %% RFC3986 - 5.2.2.  Transform References
 resolve_uri(Scheme, Host, Port, Path, Query, URI) ->
diff --git a/lib/inets/src/http_server/mod_esi.erl b/lib/inets/src/http_server/mod_esi.erl
index 443b7ee564..f495f12f03 100644
--- a/lib/inets/src/http_server/mod_esi.erl
+++ b/lib/inets/src/http_server/mod_esi.erl
@@ -33,7 +33,7 @@
 -include("httpd_internal.hrl").
 
 -define(VMODULE,"ESI").
--define(DEFAULT_ERL_TIMEOUT,15000).
+-define(DEFAULT_ERL_TIMEOUT,15).
 
 
 %%%=========================================================================
@@ -174,7 +174,7 @@ store({erl_script_alias, Value}, _) ->
     {error, {wrong_type, {erl_script_alias, Value}}};
 store({erl_script_timeout, TimeoutSec}, _) 
   when is_integer(TimeoutSec) andalso (TimeoutSec >= 0) ->
-    {ok, {erl_script_timeout, TimeoutSec * 1000}};
+    {ok, {erl_script_timeout, TimeoutSec}};
 store({erl_script_timeout, Value}, _) ->
     {error, {wrong_type, {erl_script_timeout, Value}}};
 store({erl_script_nocache, Value} = Conf, _) 
@@ -500,7 +500,7 @@ kill_esi_delivery_process(Pid) ->
 	
 
 erl_script_timeout(Db) ->
-    httpd_util:lookup(Db, erl_script_timeout, ?DEFAULT_ERL_TIMEOUT).
+    httpd_util:lookup(Db, erl_script_timeout, ?DEFAULT_ERL_TIMEOUT * 1000).
 
 script_elements(FuncAndInput, Input) ->
     case input_type(FuncAndInput) of
diff --git a/lib/inets/test/http_format_SUITE.erl b/lib/inets/test/http_format_SUITE.erl
index d6b0e5f9f5..0a5aed67d5 100644
--- a/lib/inets/test/http_format_SUITE.erl
+++ b/lib/inets/test/http_format_SUITE.erl
@@ -435,7 +435,7 @@ http_request(Config) when is_list(Config) ->
 			[<<>>, Length1], HttpBody1)).
 %%-------------------------------------------------------------------------
 validate_request_line() ->
-    [{doc, "Test httpd_request:validate/3. Makes sure you can not get past"
+    [{doc, "Test httpd_request:validate/3. Makes sure you cannot get past"
      " the server_root and that the request is recognized by the server"
      " and protcol version."}].
 validate_request_line(Config) when is_list(Config) ->
diff --git a/lib/inets/test/httpc_SUITE.erl b/lib/inets/test/httpc_SUITE.erl
index 8357e02014..d4b33ae2c6 100644
--- a/lib/inets/test/httpc_SUITE.erl
+++ b/lib/inets/test/httpc_SUITE.erl
@@ -339,14 +339,6 @@ end_per_testcase(Case, Config)
 end_per_testcase(_Case, _Config) ->
     ok.
 
-is_ipv6_supported() ->
-    case gen_udp:open(0, [inet6]) of
-        {ok, Socket} ->
-            gen_udp:close(Socket),
-            true;
-        _ ->
-            false
-    end.
 
 
 %%--------------------------------------------------------------------
@@ -1612,7 +1604,8 @@ post_with_content_type(Config) when is_list(Config) ->
 
 %%--------------------------------------------------------------------
 request_options() ->
-    [{doc, "Test http get request with socket options against local server (IPv6)"}].
+    [{require, ipv6_hosts},
+     {doc, "Test http get request with socket options against local server (IPv6)"}].
 request_options(Config) when is_list(Config) ->
     Request  = {url(group_name(Config), "/dummy.html", Config), []},
     {ok, {{_,200,_}, [_ | _], _ = [_ | _]}} = httpc:request(get, Request, [],
@@ -2945,3 +2938,12 @@ receive_stream_n(Ref, N) ->
 	    ct:pal("Data:  ~p", [Data]),
 	    receive_stream_n(Ref, N-1)
     end.
+
+is_ipv6_supported() ->
+    {ok, Hostname0} = inet:gethostname(),
+    try 
+        lists:member(list_to_atom(Hostname0), ct:get_config(ipv6_hosts))
+    catch
+         _: _ ->
+            false
+    end.
diff --git a/lib/inets/test/httpc_proxy_SUITE.erl b/lib/inets/test/httpc_proxy_SUITE.erl
index 198b245399..3ee7981660 100644
--- a/lib/inets/test/httpc_proxy_SUITE.erl
+++ b/lib/inets/test/httpc_proxy_SUITE.erl
@@ -534,7 +534,7 @@ init_local_proxy(Config) ->
 		    ct:fail({local_proxy_start_failed,Error})
 	    end;
 	_ ->
-	    {skip,"Platform can not run local proxy start script"}
+	    {skip,"Platform cannot run local proxy start script"}
     end.
 
 init_local_proxy_string(String, Config) ->
diff --git a/lib/inets/test/httpd_SUITE.erl b/lib/inets/test/httpd_SUITE.erl
index 5b6740fba3..fcb9ad7905 100644
--- a/lib/inets/test/httpd_SUITE.erl
+++ b/lib/inets/test/httpd_SUITE.erl
@@ -78,7 +78,8 @@ all() ->
      {group, http_rel_path_script_alias},
      {group, http_not_sup},
      {group, https_not_sup},
-     mime_types_format
+     mime_types_format,
+     erl_script_timeout_option
     ].
 
 groups() ->
@@ -1777,6 +1778,18 @@ mime_types_format(Config) when is_list(Config) ->
      {"hqx","application/mac-binhex40"}]} = httpd_conf:load_mime_types(MimeTypes).
 
 
+erl_script_timeout_option(Config) when is_list(Config) ->
+    inets:start(),
+    {ok, Pid} = inets:start(httpd, [{erl_script_timeout, 215},
+                                    {server_name, "test"},
+                                    {port,0},
+                                    {server_root, "."},
+                                    {document_root, "."}]),
+    Info = httpd:info(Pid),
+    215 = proplists:get_value(erl_script_timeout, Info),
+    inets:stop().
+
+
 %%--------------------------------------------------------------------
 %% Internal functions -----------------------------------
 %%--------------------------------------------------------------------
diff --git a/lib/inets/test/httpd_bench_SUITE.erl b/lib/inets/test/httpd_bench_SUITE.erl
index 4b549dcb5b..087516f56c 100644
--- a/lib/inets/test/httpd_bench_SUITE.erl
+++ b/lib/inets/test/httpd_bench_SUITE.erl
@@ -37,7 +37,8 @@
 %% Common Test interface functions -----------------------------------
 %%--------------------------------------------------------------------
 suite() -> 
-    [{ct_hooks,[{ts_install_cth,[{nodenames,2}]}]}].
+    [{timetrap, {minutes, 1}},
+     {ct_hooks,[{ts_install_cth,[{nodenames,2}]}]}].
 
 all() -> 
     [
@@ -499,8 +500,8 @@ start_dummy("http"= Protocol, Config) ->
     Conf = [
 	    %%{big, filename:join(DataDir, "1M_file")},
 	    %%{small, filename:join(DataDir, "1k_file")},
-	    {big, {gen,  crypto:rand_bytes(1000000)}},
-	    {small, {gen,  crypto:rand_bytes(1000)}},
+	    {big, {gen,  crypto:strong_rand_bytes(1000000)}},
+	    {small, {gen,  crypto:strong_rand_bytes(1000)}},
 	    {http_version, HTTPVersion},
 	    {keep_alive,  ?config(keep_alive, Config)}
 	   ],
@@ -519,8 +520,8 @@ start_dummy("https" = Protocol, Config) ->
     Opts = [{active, true}, {nodelay, true}, {reuseaddr, true} | SSLOpts],
     Conf = [%%{big, filename:join(DataDir, "1M_file")},
 	    %%{small, filename:join(DataDir, "1k_file")},
-	    {big, {gen, crypto:rand_bytes(1000000)}},
-	    {small, {gen, crypto:rand_bytes(1000)}},
+	    {big, {gen, crypto:strong_rand_bytes(1000000)}},
+	    {small, {gen, crypto:strong_rand_bytes(1000)}},
 	    {http_version, HTTPVersion},
 	    {keep_alive, ?config(keep_alive, Config)}
 	   ],
diff --git a/lib/inets/vsn.mk b/lib/inets/vsn.mk
index 52c05a7974..b7ddf39ebd 100644
--- a/lib/inets/vsn.mk
+++ b/lib/inets/vsn.mk
@@ -19,6 +19,6 @@
 # %CopyrightEnd%
 
 APPLICATION = inets
-INETS_VSN   = 7.0.3
+INETS_VSN   = 7.0.6
 PRE_VSN     =
 APP_VSN     = "$(APPLICATION)-$(INETS_VSN)$(PRE_VSN)"
diff --git a/lib/jinterface/doc/src/Makefile b/lib/jinterface/doc/src/Makefile
index d80bb38ec1..f5cba9d074 100644
--- a/lib/jinterface/doc/src/Makefile
+++ b/lib/jinterface/doc/src/Makefile
@@ -137,6 +137,7 @@ clean clean_docs:
 jdoc:$(JAVA_SRC_FILES)
 	(cd ../../java_src;$(JAVADOC) -sourcepath . -d $(JAVADOC_DEST) \
 		-windowtitle $(JAVADOC_TITLE) $(JAVADOC_PKGS))
+	touch jdoc
 
 man:
 
@@ -152,15 +153,8 @@ include $(ERL_TOP)/make/otp_release_targets.mk
 release_docs_spec: docs
 	$(INSTALL_DIR) "$(RELSYSDIR)/doc/pdf"
 	$(INSTALL_DATA) $(TOP_PDF_FILE) "$(RELSYSDIR)/doc/pdf"
-	$(INSTALL_DIR) "$(RELSYSDIR)/doc/html"
-	$(INSTALL_DIR) "$(RELSYSDIR)/doc/html/java/$(JAVA_PKG_PATH)"
 	$(INSTALL_DATA) $(INFO_FILE) "$(RELSYSDIR)"
-	($(CP) -rf  ../html "$(RELSYSDIR)/doc")
-
-#	$(INSTALL_DATA) $(GIF_FILES) $(EXTRA_FILES) $(HTML_FILES) \
-#		"$(RELSYSDIR)/doc/html"
-#	$(INSTALL_DATA) $(JAVA_EXTRA_FILES) "$(RELSYSDIR)/doc/html/java"
-#	$(INSTALL_DATA) $(TOP_HTML_FILES) "$(RELSYSDIR)/doc"
+	$(INSTALL_DIR_DATA) $(HTMLDIR) "$(RELSYSDIR)/doc/html"
 
 
 release_spec:
diff --git a/lib/jinterface/doc/src/jinterface_users_guide.xml b/lib/jinterface/doc/src/jinterface_users_guide.xml
index 56f88124bf..504c77f339 100644
--- a/lib/jinterface/doc/src/jinterface_users_guide.xml
+++ b/lib/jinterface/doc/src/jinterface_users_guide.xml
@@ -366,20 +366,20 @@ OtpNode node = new OtpNode("gurka");    </code>
       <seealso marker="java/com/ericsson/otp/erlang/OtpEpmd">OtpEpmd</seealso> class.
       Nodes wishing to contact other nodes must first request information 
       from Epmd before a connection can be set up, however this is done automatically 
-      by <seealso marker="java/com/ericsson/otp/erlang/OtpSelf#connect(com.ericsson.otp.erlang.OtpPeer)">OtpSelf.connect()</seealso> when necessary. </p>
-    <p>When you use <seealso marker="java/com/ericsson/otp/erlang/OtpSelf#connect(com.ericsson.otp.erlang.OtpPeer)">OtpSelf.connect()</seealso> to connect to an Erlang node, 
+      by <seealso marker="java/com/ericsson/otp/erlang/OtpSelf#connect-com.ericsson.otp.erlang.OtpPeer-">OtpSelf.connect()</seealso> when necessary. </p>
+    <p>When you use <seealso marker="java/com/ericsson/otp/erlang/OtpSelf#connect-com.ericsson.otp.erlang.OtpPeer-">OtpSelf.connect()</seealso> to connect to an Erlang node, 
       a connection is first made to epmd and, if the node is known, a
       connection is then made to the Erlang node.</p>
     <p>Java nodes can also register themselves with epmd if they want other
       nodes in the system to be able to find and connect to them.
-      This is done by call to method <seealso marker="java/com/ericsson/otp/erlang/OtpEpmd#publishPort(com.ericsson.otp.erlang.OtpLocalNode)">OtpEpmd.publishPort()</seealso>.</p>
+      This is done by call to method <seealso marker="java/com/ericsson/otp/erlang/OtpEpmd#publishPort-com.ericsson.otp.erlang.OtpLocalNode-">OtpEpmd.publishPort()</seealso>.</p>
     <p>Be aware that on some systems (such as VxWorks), a failed node will
       not be detected by this mechanism since the operating system does not
       automatically close descriptors that were left open when the node
       failed. If a node has failed in this way, epmd will prevent you from
       registering a new node with the old name, since it thinks that the old
       name is still in use. In this case, you must unregister the name
-      explicitly, by using <seealso marker="java/com/ericsson/otp/erlang/OtpEpmd#unPublishPort(com.ericsson.otp.erlang.OtpLocalNode)">OtpEpmd.unPublishPort()</seealso></p>
+      explicitly, by using <seealso marker="java/com/ericsson/otp/erlang/OtpEpmd#unPublishPort-com.ericsson.otp.erlang.OtpLocalNode-">OtpEpmd.unPublishPort()</seealso></p>
     <p>This will cause epmd to close the connection from the far end. Note
       that if the name was in fact still in use by a node, the results of
       this operation are unpredictable. Also, doing this does not cause the
diff --git a/lib/jinterface/doc/src/notes.xml b/lib/jinterface/doc/src/notes.xml
index 75a2364384..e4bfddcd17 100644
--- a/lib/jinterface/doc/src/notes.xml
+++ b/lib/jinterface/doc/src/notes.xml
@@ -720,7 +720,7 @@
         <item>
           <p><c>OtpMbox.receive()</c> and <c>OtpMbox.receive(long timeout)</c> can now throw
             <c>OtpErlangDecodeException</c> if the received message
-            can not be decoded. <c>null</c> is now only returned from
+            cannot be decoded. <c>null</c> is now only returned from
             <c>OtpMbox.receive(long timeout)</c> if a timeout occurs.
             <c>OtpMbox.receive()</c> will never return <c>null</c>.</p>
           <p>*** POTENTIAL INCOMPATIBILITY ***</p>
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpEpmd.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpEpmd.java
index 363fdb950a..fffb8475d3 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpEpmd.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpEpmd.java
@@ -102,7 +102,7 @@ public class OtpEpmd {
     /**
      * Set the port number to be used to contact the epmd process. Only needed
      * when the default port is not desired and system environment variable
-     * ERL_EPMD_PORT can not be read (applet).
+     * ERL_EPMD_PORT cannot be read (applet).
      */
     public static void useEpmdPort(final int port) {
         EpmdPort.set(port);
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangPid.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangPid.java
index 9cbd735751..3abdf9535f 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangPid.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangPid.java
@@ -27,7 +27,6 @@ public class OtpErlangPid extends OtpErlangObject implements Comparable<Object>
     // don't change this!
     private static final long serialVersionUID = 1664394142301803659L;
 
-    private final int tag;
     private final String node;
     private final int id;
     private final int serial;
@@ -45,7 +44,6 @@ public class OtpErlangPid extends OtpErlangObject implements Comparable<Object>
     public OtpErlangPid(final OtpLocalNode self) {
         final OtpErlangPid p = self.createPid();
 
-	tag = p.tag;
         id = p.id;
         serial = p.serial;
         creation = p.creation;
@@ -67,7 +65,6 @@ public class OtpErlangPid extends OtpErlangObject implements Comparable<Object>
             throws OtpErlangDecodeException {
         final OtpErlangPid p = buf.read_pid();
 
-	tag = p.tag;
         node = p.node();
         id = p.id();
         serial = p.serial();
@@ -118,7 +115,6 @@ public class OtpErlangPid extends OtpErlangObject implements Comparable<Object>
      */
     protected OtpErlangPid(final int tag, final String node, final int id,
 			   final int serial, final int creation) {
-	this.tag = tag;
 	this.node = node;
 	if (tag == OtpExternal.pidTag) {
 	    this.id = id & 0x7fff; // 15 bits
@@ -133,7 +129,7 @@ public class OtpErlangPid extends OtpErlangObject implements Comparable<Object>
     }
 
     protected int tag() {
-	return tag;
+	return OtpExternal.newPidTag;
     }
 
     /**
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangPort.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangPort.java
index 79b5d2736c..c8648d7aa3 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangPort.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangPort.java
@@ -26,7 +26,6 @@ public class OtpErlangPort extends OtpErlangObject {
     // don't change this!
     private static final long serialVersionUID = 4037115468007644704L;
 
-    private final int tag;
     private final String node;
     private final int id;
     private final int creation;
@@ -43,7 +42,6 @@ public class OtpErlangPort extends OtpErlangObject {
     private OtpErlangPort(final OtpSelf self) {
         final OtpErlangPort p = self.createPort();
 
-	tag = p.tag;
         id = p.id;
         creation = p.creation;
         node = p.node;
@@ -64,7 +62,6 @@ public class OtpErlangPort extends OtpErlangObject {
             throws OtpErlangDecodeException {
         final OtpErlangPort p = buf.read_port();
 
-	tag = p.tag;
         node = p.node();
         id = p.id();
         creation = p.creation();
@@ -105,7 +102,6 @@ public class OtpErlangPort extends OtpErlangObject {
      */
     public OtpErlangPort(final int tag, final String node, final int id,
 			 final int creation) {
-	this.tag = tag;
 	this.node = node;
 	if (tag == OtpExternal.portTag) {
 	    this.id = id & 0xfffffff; // 28 bits
@@ -118,7 +114,7 @@ public class OtpErlangPort extends OtpErlangObject {
     }
 
     protected int tag() {
-        return tag;
+        return OtpExternal.newPortTag;
     }
 
     /**
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangRef.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangRef.java
index 2165397013..2bf8d9a56b 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangRef.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangRef.java
@@ -28,7 +28,6 @@ public class OtpErlangRef extends OtpErlangObject {
     // don't change this!
     private static final long serialVersionUID = -7022666480768586521L;
 
-    private final int tag;
     private final String node;
     private final int creation;
 
@@ -49,7 +48,6 @@ public class OtpErlangRef extends OtpErlangObject {
     public OtpErlangRef(final OtpLocalNode self) {
         final OtpErlangRef r = self.createRef();
 
-	tag = r.tag;
         ids = r.ids;
         creation = r.creation;
         node = r.node;
@@ -70,7 +68,6 @@ public class OtpErlangRef extends OtpErlangObject {
             throws OtpErlangDecodeException {
         final OtpErlangRef r = buf.read_ref();
 
-	tag = r.tag;
         node = r.node();
         creation = r.creation();
 
@@ -90,7 +87,6 @@ public class OtpErlangRef extends OtpErlangObject {
      *            another arbitrary number.
      */
     public OtpErlangRef(final String node, final int id, final int creation) {
-	this.tag = OtpExternal.newRefTag;
         this.node = node;
         ids = new int[1];
         ids[0] = id & 0x3ffff; // 18 bits
@@ -138,7 +134,6 @@ public class OtpErlangRef extends OtpErlangObject {
      */
     public OtpErlangRef(final int tag, final String node, final int[] ids,
 			final int creation) {
-	this.tag = tag;
         this.node = node;
 
         // use at most 3 words
@@ -162,7 +157,7 @@ public class OtpErlangRef extends OtpErlangObject {
     }
 
     protected int tag() {
-        return tag;
+        return OtpExternal.newerRefTag;
     }
 
     /**
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpInputStream.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpInputStream.java
index ded8f6e1e5..6d81ce630b 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpInputStream.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpInputStream.java
@@ -601,7 +601,7 @@ public class OtpInputStream extends ByteArrayInputStream {
      * @return the integer value.
      *
      * @exception OtpErlangDecodeException
-     *                if the next term in the stream can not be represented as a
+     *                if the next term in the stream cannot be represented as a
      *                positive integer.
      */
     public int read_uint() throws OtpErlangDecodeException {
@@ -622,7 +622,7 @@ public class OtpInputStream extends ByteArrayInputStream {
      * @return the integer value.
      *
      * @exception OtpErlangDecodeException
-     *                if the next term in the stream can not be represented as
+     *                if the next term in the stream cannot be represented as
      *                an integer.
      */
     public int read_int() throws OtpErlangDecodeException {
@@ -643,7 +643,7 @@ public class OtpInputStream extends ByteArrayInputStream {
      * @return the short value.
      *
      * @exception OtpErlangDecodeException
-     *                if the next term in the stream can not be represented as a
+     *                if the next term in the stream cannot be represented as a
      *                positive short.
      */
     public short read_ushort() throws OtpErlangDecodeException {
@@ -664,7 +664,7 @@ public class OtpInputStream extends ByteArrayInputStream {
      * @return the short value.
      *
      * @exception OtpErlangDecodeException
-     *                if the next term in the stream can not be represented as a
+     *                if the next term in the stream cannot be represented as a
      *                short.
      */
     public short read_short() throws OtpErlangDecodeException {
@@ -685,7 +685,7 @@ public class OtpInputStream extends ByteArrayInputStream {
      * @return the long value.
      *
      * @exception OtpErlangDecodeException
-     *                if the next term in the stream can not be represented as a
+     *                if the next term in the stream cannot be represented as a
      *                positive long.
      */
     public long read_ulong() throws OtpErlangDecodeException {
@@ -698,7 +698,7 @@ public class OtpInputStream extends ByteArrayInputStream {
      * @return the long value.
      *
      * @exception OtpErlangDecodeException
-     *                if the next term in the stream can not be represented as a
+     *                if the next term in the stream cannot be represented as a
      *                long.
      */
     public long read_long() throws OtpErlangDecodeException {
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpMbox.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpMbox.java
index 42e178c3f6..29a8bc1540 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpMbox.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpMbox.java
@@ -156,7 +156,7 @@ public class OtpMbox {
      *         of the next message waiting in this mailbox.
      *
      * @exception OtpErlangDecodeException
-     *                if the message can not be decoded.
+     *                if the message cannot be decoded.
      *
      * @exception OtpErlangExit
      *                if a linked {@link OtpErlangPid pid} has exited or has
@@ -184,7 +184,7 @@ public class OtpMbox {
      *         of the next message waiting in this mailbox.
      *
      * @exception OtpErlangDecodeException
-     *                if the message can not be decoded.
+     *                if the message cannot be decoded.
      *
      * @exception OtpErlangExit
      *                if a linked {@link OtpErlangPid pid} has exited or has
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpOutputStream.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpOutputStream.java
index 187705a0b5..a3b089c1da 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpOutputStream.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpOutputStream.java
@@ -713,7 +713,7 @@ public class OtpOutputStream extends ByteArrayOutputStream {
      */
     public void write_pid(final String node, final int id, final int serial,
             final int creation) {
-	write1(OtpExternal.pidTag);
+	write1(OtpExternal.newPidTag);
 	write_atom(node);
 	write4BE(id & 0x7fff); // 15 bits
 	write4BE(serial & 0x1fff); // 13 bits
@@ -727,20 +727,11 @@ public class OtpOutputStream extends ByteArrayOutputStream {
      *            the pid
      */
     public void write_pid(OtpErlangPid pid) {
-	write1(pid.tag());
+	write1(OtpExternal.newPidTag);
 	write_atom(pid.node());
 	write4BE(pid.id());
 	write4BE(pid.serial());
-	switch (pid.tag()) {
-	case OtpExternal.pidTag:
-	    write1(pid.creation());
-	    break;
-	case OtpExternal.newPidTag:
-	    write4BE(pid.creation());
-	    break;
-	default:
-	    throw new AssertionError("Invalid pid tag " + pid.tag());
-	}
+        write4BE(pid.creation());
     }
 
 
@@ -758,7 +749,7 @@ public class OtpOutputStream extends ByteArrayOutputStream {
      *            be used.
      */
     public void write_port(final String node, final int id, final int creation) {
-	write1(OtpExternal.portTag);
+	write1(OtpExternal.newPortTag);
 	write_atom(node);
 	write4BE(id & 0xfffffff); // 28 bits
 	write1(creation & 0x3); // 2 bits
@@ -771,19 +762,10 @@ public class OtpOutputStream extends ByteArrayOutputStream {
      *            the port.
      */
     public void write_port(OtpErlangPort port) {
-	write1(port.tag());
+	write1(OtpExternal.newPortTag);
 	write_atom(port.node());
 	write4BE(port.id());
-	switch (port.tag()) {
-	case OtpExternal.portTag:	    
-	    write1(port.creation());
-	    break;
-	case OtpExternal.newPortTag:
-	    write4BE(port.creation());
-	    break;
-	default:
-	    throw new AssertionError("Invalid port tag " + port.tag());
-	}
+        write4BE(port.creation());
     }
 
     /**
@@ -829,7 +811,7 @@ public class OtpOutputStream extends ByteArrayOutputStream {
             arity = 3; // max 3 words in ref
         }
 
-	write1(OtpExternal.newRefTag);
+	write1(OtpExternal.newerRefTag);
 
 	// how many id values
 	write2BE(arity);
@@ -857,24 +839,12 @@ public class OtpOutputStream extends ByteArrayOutputStream {
 	int[] ids = ref.ids();
         int arity = ids.length;
 
-	write1(ref.tag());
+	write1(OtpExternal.newerRefTag);
 	write2BE(arity);
 	write_atom(ref.node());
+        write4BE(ref.creation());
 
-	switch (ref.tag()) {
-	case OtpExternal.newRefTag:
-	    write1(ref.creation());
-	    write4BE(ids[0] & 0x3ffff); // first word gets truncated to 18 bits
-	    break;
-	case OtpExternal.newerRefTag:
-	    write4BE(ref.creation());
-	    write4BE(ids[0]); // full first word
-	    break;
-	default:
-	    throw new AssertionError("Invalid ref tag " + ref.tag());
-	}
-
-	for (int i = 1; i < arity; i++) {
+	for (int i = 0; i < arity; i++) {
 	    write4BE(ids[i]);
 	}
     }
diff --git a/lib/kernel/doc/src/application.xml b/lib/kernel/doc/src/application.xml
index 38c7b5acf1..f4ec2c610f 100644
--- a/lib/kernel/doc/src/application.xml
+++ b/lib/kernel/doc/src/application.xml
@@ -28,7 +28,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>application</module>
+  <module since="">application</module>
   <modulesummary>Generic OTP application functions</modulesummary>
   <description>
     <p>In OTP, <em>application</em> denotes a component implementing
@@ -67,8 +67,8 @@
   </datatypes>
   <funcs>
     <func>
-        <name name="ensure_all_started" arity="1"/>
-        <name name="ensure_all_started" arity="2"/>
+        <name name="ensure_all_started" arity="1" since="OTP R16B02"/>
+        <name name="ensure_all_started" arity="2" since="OTP R16B02"/>
         <fsummary>Load and start an application and its dependencies, recursively.</fsummary>
         <desc>
           <p>Equivalent to calling
@@ -85,8 +85,8 @@
         </desc>
     </func>
     <func>
-      <name name="ensure_started" arity="1"/>
-      <name name="ensure_started" arity="2"/>
+      <name name="ensure_started" arity="1" since="OTP R16B01"/>
+      <name name="ensure_started" arity="2" since="OTP R16B01"/>
       <fsummary>Load and start an application.</fsummary>
       <desc>
 	<p>Equivalent to
@@ -95,8 +95,8 @@
       </desc>
     </func>
     <func>
-      <name name="get_all_env" arity="0"/>
-      <name name="get_all_env" arity="1"/>
+      <name name="get_all_env" arity="0" since=""/>
+      <name name="get_all_env" arity="1" since=""/>
       <fsummary>Get the configuration parameters for an application.</fsummary>
       <desc>
         <p>Returns the configuration parameters and their values for
@@ -108,8 +108,8 @@
       </desc>
     </func>
     <func>
-      <name name="get_all_key" arity="0"/>
-      <name name="get_all_key" arity="1"/>
+      <name name="get_all_key" arity="0" since=""/>
+      <name name="get_all_key" arity="1" since=""/>
       <fsummary>Get the application specification keys.</fsummary>
       <desc>
         <p>Returns the application specification keys and their values
@@ -122,8 +122,8 @@
       </desc>
     </func>
     <func>
-      <name name="get_application" arity="0"/>
-      <name name="get_application" arity="1"/>
+      <name name="get_application" arity="0" since=""/>
+      <name name="get_application" arity="1" since=""/>
       <fsummary>Get the name of an application containing a certain process or module.</fsummary>
       <desc>
         <p>Returns the name of the application to which the process
@@ -136,8 +136,8 @@
       </desc>
     </func>
     <func>
-      <name name="get_env" arity="1"/>
-      <name name="get_env" arity="2"/>
+      <name name="get_env" arity="1" since=""/>
+      <name name="get_env" arity="2" since=""/>
       <fsummary>Get the value of a configuration parameter.</fsummary>
       <desc>
         <p>Returns the value of configuration parameter <c><anno>Par</anno></c>
@@ -153,7 +153,7 @@
       </desc>
     </func>
     <func>
-      <name name="get_env" arity="3"/>
+      <name name="get_env" arity="3" since="OTP R16B"/>
       <fsummary>Get the value of a configuration parameter using a default.</fsummary>
       <desc>
         <p>Works like <seealso marker="#get_env/2"><c>get_env/2</c></seealso> but returns
@@ -162,8 +162,8 @@
       </desc>
     </func>
     <func>
-      <name name="get_key" arity="1"/>
-      <name name="get_key" arity="2"/>
+      <name name="get_key" arity="1" since=""/>
+      <name name="get_key" arity="2" since=""/>
       <fsummary>Get the value of an application specification key.</fsummary>
       <desc>
         <p>Returns the value of the application specification key
@@ -180,8 +180,8 @@
       </desc>
     </func>
     <func>
-      <name name="load" arity="1"/>
-      <name name="load" arity="2"/>
+      <name name="load" arity="1" since=""/>
+      <name name="load" arity="2" since=""/>
       <fsummary>Load an application.</fsummary>
       <type name="application_spec"/>
       <type name="application_opt"/>
@@ -226,7 +226,7 @@ Nodes = [cp1@cave, {cp2@cave, cp3@cave}]</code>
       </desc>
     </func>
     <func>
-      <name name="loaded_applications" arity="0"/>
+      <name name="loaded_applications" arity="0" since=""/>
       <fsummary>Get the currently loaded applications.</fsummary>
       <desc>
         <p>Returns a list with information about the applications, and included
@@ -238,7 +238,42 @@ Nodes = [cp1@cave, {cp2@cave, cp3@cave}]</code>
       </desc>
     </func>
     <func>
-      <name name="permit" arity="2"/>
+      <name name="set_env" arity="1" since="OTP 21.3"/>
+      <name name="set_env" arity="2" since="OTP 21.3"/>
+      <fsummary>Sets the configuration parameters of multiple applications.</fsummary>
+      <desc>
+        <p>Sets the configuration <c><anno>Config</anno></c> for multiple
+          applications. It is equivalent to calling <c>set_env/4</c> on
+          each application individially, except it is more efficient.
+          The given <c><anno>Config</anno></c> is validated before the
+          configuration is set.</p>
+        <p><c>set_env/2</c> uses the standard <c>gen_server</c> time-out
+          value (5000 ms). Option <c>timeout</c> can be specified
+          if another time-out value is useful, for example, in situations
+          where the application controller is heavily loaded.</p>
+        <p>Option <c>persistent</c> can be set to <c>true</c>
+          to guarantee that parameters set with <c>set_env/2</c>
+          are not overridden by those defined in the application resource
+          file on load. This means that persistent values will stick after the application
+          is loaded and also on application reload.</p>
+        <p>If an application is given more than once or if an application
+          has the same key given more than once, the behaviour is undefined
+          and a warning message will be logged. In future releases, an error
+          will be raised.</p>
+        <p><c>set_env/1</c> is equivalent to <c>set_env(Config, [])</c>.</p>
+        <warning>
+          <p>Use this function only if you know what you are doing,
+            that is, on your own applications. It is very
+            application-dependent and
+            configuration parameter-dependent when and how often
+            the value is read by the application. Careless use
+            of this function can put the application in a
+            weird, inconsistent, and malfunctioning state.</p>
+        </warning>
+      </desc>
+    </func>
+    <func>
+      <name name="permit" arity="2" since=""/>
       <fsummary>Change the permission for an application to run at a node.</fsummary>
       <desc>
         <p>Changes the permission for <c><anno>Application</anno></c> to run at
@@ -271,8 +306,8 @@ Nodes = [cp1@cave, {cp2@cave, cp3@cave}]</code>
       </desc>
     </func>
     <func>
-      <name name="set_env" arity="3"/>
-      <name name="set_env" arity="4"/>
+      <name name="set_env" arity="3" since=""/>
+      <name name="set_env" arity="4" since=""/>
       <fsummary>Set the value of a configuration parameter.</fsummary>
       <desc>
         <p>Sets the value of configuration parameter <c><anno>Par</anno></c> for
@@ -302,8 +337,8 @@ Nodes = [cp1@cave, {cp2@cave, cp3@cave}]</code>
       </desc>
     </func>
     <func>
-      <name name="start" arity="1"/>
-      <name name="start" arity="2"/>
+      <name name="start" arity="1" since=""/>
+      <name name="start" arity="2" since=""/>
       <fsummary>Load and start an application.</fsummary>
        <desc>
         <p>Starts <c><anno>Application</anno></c>. If it is not loaded,
@@ -353,7 +388,7 @@ Nodes = [cp1@cave, {cp2@cave, cp3@cave}]</code>
       </desc>
     </func>
     <func>
-      <name name="start_type" arity="0"/>
+      <name name="start_type" arity="0" since=""/>
       <fsummary>Get the start type of an ongoing application startup.</fsummary>
       <desc>
         <p>This function is intended to be called by a process belonging
@@ -370,7 +405,7 @@ Nodes = [cp1@cave, {cp2@cave, cp3@cave}]</code>
       </desc>
     </func>
     <func>
-      <name name="stop" arity="1"/>
+      <name name="stop" arity="1" since=""/>
       <fsummary>Stop an application.</fsummary>
       <desc>
         <p>Stops <c><anno>Application</anno></c>. The application master calls
@@ -399,7 +434,7 @@ Nodes = [cp1@cave, {cp2@cave, cp3@cave}]</code>
       </desc>
     </func>
     <func>
-      <name name="takeover" arity="2"/>
+      <name name="takeover" arity="2" since=""/>
       <fsummary>Take over a distributed application.</fsummary>
       <desc>
         <p>Takes over the distributed application
@@ -424,7 +459,7 @@ Nodes = [cp1@cave, {cp2@cave, cp3@cave}]</code>
       </desc>
     </func>
     <func>
-      <name name="unload" arity="1"/>
+      <name name="unload" arity="1" since=""/>
       <fsummary>Unload an application.</fsummary>
       <desc>
         <p>Unloads the application specification for <c><anno>Application</anno></c>
@@ -435,8 +470,8 @@ Nodes = [cp1@cave, {cp2@cave, cp3@cave}]</code>
       </desc>
     </func>
     <func>
-      <name name="unset_env" arity="2"/>
-      <name name="unset_env" arity="3"/>
+      <name name="unset_env" arity="2" since=""/>
+      <name name="unset_env" arity="3" since=""/>
       <fsummary>Unset the value of a configuration parameter.</fsummary>
       <desc>
         <p>Removes the configuration parameter <c><anno>Par</anno></c> and its value
@@ -459,8 +494,8 @@ Nodes = [cp1@cave, {cp2@cave, cp3@cave}]</code>
       </desc>
     </func>
     <func>
-      <name name="which_applications" arity="0"/>
-      <name name="which_applications" arity="1"/>
+      <name name="which_applications" arity="0" since=""/>
+      <name name="which_applications" arity="1" since=""/>
       <fsummary>Get the currently running applications.</fsummary>
       <desc>
         <p>Returns a list with information about the applications that
@@ -484,7 +519,7 @@ Nodes = [cp1@cave, {cp2@cave, cp3@cave}]</code>
   </section>
   <funcs>
     <func>
-      <name>Module:start(StartType, StartArgs) -> {ok, Pid} | {ok, Pid, State} | {error, Reason}</name>
+      <name since="">Module:start(StartType, StartArgs) -> {ok, Pid} | {ok, Pid, State} | {error, Reason}</name>
       <fsummary>Start an application.</fsummary>
       <type>
         <v>StartType = <seealso marker="#type-start_type"><c>start_type()</c></seealso></v>
@@ -526,7 +561,7 @@ Nodes = [cp1@cave, {cp2@cave, cp3@cave}]</code>
       </desc>
     </func>
     <func>
-      <name>Module:start_phase(Phase, StartType, PhaseArgs) -> ok | {error, Reason}</name>
+      <name since="">Module:start_phase(Phase, StartType, PhaseArgs) -> ok | {error, Reason}</name>
       <fsummary>Extended start of an application.</fsummary>
       <type>
         <v>Phase = atom()</v>
@@ -547,11 +582,11 @@ Nodes = [cp1@cave, {cp2@cave, cp3@cave}]</code>
           the primary application) for the primary application and all
           included applications, for which the start phase is defined.</p>
         <p>For a description of <c>StartType</c>, see
-	<seealso marker="Module:start/2"><c>Module:start/2</c></seealso>.</p>
+	<seealso marker="#Module:start/2"><c>Module:start/2</c></seealso>.</p>
       </desc>
     </func>
     <func>
-      <name>Module:prep_stop(State) -> NewState</name>
+      <name since="">Module:prep_stop(State) -> NewState</name>
       <fsummary>Prepare an application for termination.</fsummary>
       <type>
         <v>State = NewState = term()</v>
@@ -569,7 +604,7 @@ Nodes = [cp1@cave, {cp2@cave, cp3@cave}]</code>
       </desc>
     </func>
     <func>
-      <name>Module:stop(State)</name>
+      <name since="">Module:stop(State)</name>
       <fsummary>Clean up after termination of an application.</fsummary>
       <type>
         <v>State = term()</v>
@@ -585,7 +620,7 @@ Nodes = [cp1@cave, {cp2@cave, cp3@cave}]</code>
       </desc>
     </func>
     <func>
-      <name>Module:config_change(Changed, New, Removed) -> ok</name>
+      <name since="">Module:config_change(Changed, New, Removed) -> ok</name>
       <fsummary>Update the configuration parameters for an application.</fsummary>
       <type>
         <v>Changed = [{Par,Val}]</v>
diff --git a/lib/kernel/doc/src/auth.xml b/lib/kernel/doc/src/auth.xml
index 5901446960..c735d02fed 100644
--- a/lib/kernel/doc/src/auth.xml
+++ b/lib/kernel/doc/src/auth.xml
@@ -28,7 +28,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>auth</module>
+  <module since="">auth</module>
   <modulesummary>Erlang network authentication server.</modulesummary>
   <description>
     <p>This module is deprecated. For a description of the Magic
@@ -42,28 +42,28 @@
   </datatypes>
   <funcs>
     <func>
-      <name name="cookie" arity="0"/>
+      <name name="cookie" arity="0" since=""/>
       <fsummary>Magic cookie for local node (deprecated).</fsummary>
       <desc>
         <p>Use
-          <seealso marker="erts:erlang#erlang:get_cookie/0"><c>erlang:get_cookie()</c></seealso>
+          <seealso marker="erts:erlang#get_cookie/0"><c>erlang:get_cookie()</c></seealso>
           in ERTS instead.</p>
       </desc>
     </func>
     <func>
-      <name name="cookie" arity="1"/>
+      <name name="cookie" arity="1" since=""/>
       <fsummary>Set the magic for the local node (deprecated).</fsummary>
       <type_desc variable="TheCookie">
         The cookie can also be specified as a list with a single atom element.
       </type_desc>
       <desc>
         <p>Use
-          <seealso marker="erts:erlang#erlang:set_cookie/2"><c>erlang:set_cookie(node(), <anno>Cookie</anno>)</c>
+          <seealso marker="erts:erlang#set_cookie/2"><c>erlang:set_cookie(node(), <anno>Cookie</anno>)</c>
 	  in ERTS</seealso> instead.</p>
       </desc>
     </func>
     <func>
-      <name name="is_auth" arity="1"/>
+      <name name="is_auth" arity="1" since=""/>
       <fsummary>Status of communication authorization (deprecated).</fsummary>
       <desc>
         <p>Returns <c>yes</c> if communication with <c><anno>Node</anno></c> is
@@ -76,7 +76,7 @@
       </desc>
     </func>
     <func>
-      <name>node_cookie([Node, Cookie]) -> yes | no</name>
+      <name since="">node_cookie([Node, Cookie]) -> yes | no</name>
       <fsummary>Set the magic cookie for a node and verify authorization (deprecated).</fsummary>
       <type>
         <v>Node = node()</v>
@@ -88,13 +88,13 @@
       </desc>
     </func>
     <func>
-      <name name="node_cookie" arity="2"/>
+      <name name="node_cookie" arity="2" since=""/>
       <fsummary>Set the magic cookie for a node and verify authorization (deprecated).</fsummary>
       <desc>
         <p>Sets the magic cookie of <c><anno>Node</anno></c> to
 	<c><anno>Cookie</anno></c> and verifies the status of the authorization.
           Equivalent to calling
-          <seealso marker="erts:erlang#erlang:set_cookie/2"><c>erlang:set_cookie(<anno>Node</anno>, <anno>Cookie</anno>)</c></seealso>, followed by
+          <seealso marker="erts:erlang#set_cookie/2"><c>erlang:set_cookie(<anno>Node</anno>, <anno>Cookie</anno>)</c></seealso>, followed by
           <seealso marker="#is_auth/1"><c>auth:is_auth(<anno>Node</anno>)</c></seealso>.</p>
       </desc>
     </func>
diff --git a/lib/kernel/doc/src/code.xml b/lib/kernel/doc/src/code.xml
index aff3e8133c..4aa9e8b9d2 100644
--- a/lib/kernel/doc/src/code.xml
+++ b/lib/kernel/doc/src/code.xml
@@ -28,7 +28,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>code</module>
+  <module since="">code</module>
   <modulesummary>Erlang code server.</modulesummary>
   <description>
     <p>This module contains the interface to the Erlang
@@ -322,7 +322,7 @@ zip:create("mnesia-4.4.7.ez",
 
   <funcs>
     <func>
-      <name name="set_path" arity="1"/>
+      <name name="set_path" arity="1" since=""/>
       <fsummary>Set the code server search path.</fsummary>
       <desc>
         <p>Sets the code path to the list of directories <c><anno>Path</anno></c>.</p>
@@ -336,15 +336,15 @@ zip:create("mnesia-4.4.7.ez",
       </desc>
     </func>
     <func>
-      <name name="get_path" arity="0"/>
+      <name name="get_path" arity="0" since=""/>
       <fsummary>Return the code server search path.</fsummary>
       <desc>
         <p>Returns the code path.</p>
       </desc>
     </func>
     <func>
-      <name name="add_path" arity="1"/>
-      <name name="add_pathz" arity="1"/>
+      <name name="add_path" arity="1" since=""/>
+      <name name="add_pathz" arity="1" since=""/>
       <fsummary>Add a directory to the end of the code path.</fsummary>
       <type name="add_path_ret"/>
       <desc>
@@ -357,7 +357,7 @@ zip:create("mnesia-4.4.7.ez",
       </desc>
     </func>
     <func>
-      <name name="add_patha" arity="1"/>
+      <name name="add_patha" arity="1" since=""/>
       <fsummary>Add a directory to the beginning of the code path.</fsummary>
       <type name="add_path_ret"/>
       <desc>
@@ -370,8 +370,8 @@ zip:create("mnesia-4.4.7.ez",
       </desc>
     </func>
     <func>
-      <name name="add_paths" arity="1"/>
-      <name name="add_pathsz" arity="1"/>
+      <name name="add_paths" arity="1" since=""/>
+      <name name="add_pathsz" arity="1" since=""/>
       <fsummary>Add directories to the end of the code path.</fsummary>
       <desc>
         <p>Adds the directories in <c><anno>Dirs</anno></c> to the end of the code
@@ -381,7 +381,7 @@ zip:create("mnesia-4.4.7.ez",
       </desc>
     </func>
     <func>
-      <name name="add_pathsa" arity="1"/>
+      <name name="add_pathsa" arity="1" since=""/>
       <fsummary>Add directories to the beginning of the code path.</fsummary>
       <desc>
 	<p>Traverses <c><anno>Dirs</anno></c> and adds
@@ -397,7 +397,7 @@ zip:create("mnesia-4.4.7.ez",
       </desc>
     </func>
     <func>
-      <name name="del_path" arity="1"/>
+      <name name="del_path" arity="1" since=""/>
       <fsummary>Delete a directory from the code path.</fsummary>
       <desc>
         <p>Deletes a directory from the code path. The argument can be
@@ -417,7 +417,7 @@ zip:create("mnesia-4.4.7.ez",
       </desc>
     </func>
     <func>
-      <name name="replace_path" arity="2"/>
+      <name name="replace_path" arity="2" since=""/>
       <fsummary>Replace a directory with another in the code path.</fsummary>
       <desc>
         <p>Replaces an old occurrence of a directory
@@ -441,7 +441,7 @@ zip:create("mnesia-4.4.7.ez",
       </desc>
     </func>
     <func>
-      <name name="load_file" arity="1"/>
+      <name name="load_file" arity="1" since=""/>
       <fsummary>Load a module.</fsummary>
       <type name="load_ret"/>
       <desc>
@@ -460,7 +460,7 @@ zip:create("mnesia-4.4.7.ez",
       </desc>
     </func>
     <func>
-      <name name="load_abs" arity="1"/>
+      <name name="load_abs" arity="1" since=""/>
       <fsummary>Load a module, residing in a specified file.</fsummary>
       <type name="load_ret"/>
       <type name="loaded_filename"/>
@@ -477,7 +477,7 @@ zip:create("mnesia-4.4.7.ez",
       </desc>
     </func>
     <func>
-      <name name="ensure_loaded" arity="1"/>
+      <name name="ensure_loaded" arity="1" since=""/>
       <fsummary>Ensure that a module is loaded.</fsummary>
       <desc>
         <p>Tries to load a module in the same way as
@@ -489,7 +489,7 @@ zip:create("mnesia-4.4.7.ez",
       </desc>
     </func>
     <func>
-      <name name="load_binary" arity="3"/>
+      <name name="load_binary" arity="3" since=""/>
       <fsummary>Load object code for a module.</fsummary>
       <type name="loaded_filename"/>
       <type name="loaded_ret_atoms"/>
@@ -507,7 +507,7 @@ zip:create("mnesia-4.4.7.ez",
       </desc>
     </func>
     <func>
-      <name name="atomic_load" arity="1"/>
+      <name name="atomic_load" arity="1" since="OTP 19.0"/>
       <fsummary>Load a list of modules atomically</fsummary>
       <desc>
         <p>Tries to load all of the modules in the list
@@ -538,7 +538,7 @@ zip:create("mnesia-4.4.7.ez",
 	  </item>
 	  <tag><c>not_purged</c></tag>
 	  <item>
-	    <p>The object code can not be loaded because an old version
+	    <p>The object code cannot be loaded because an old version
 	    of the code already exists.</p>
 	  </item>
 	  <tag><c>sticky_directory</c></tag>
@@ -566,7 +566,7 @@ ok = code:finish_loading(Prepared),
       </desc>
     </func>
     <func>
-      <name name="prepare_loading" arity="1"/>
+      <name name="prepare_loading" arity="1" since="OTP 19.0"/>
       <fsummary>Prepare a list of modules atomically</fsummary>
       <desc>
         <p>Prepares to load the modules in the list
@@ -598,7 +598,7 @@ ok = code:finish_loading(Prepared),
       </desc>
     </func>
     <func>
-      <name name="finish_loading" arity="1"/>
+      <name name="finish_loading" arity="1" since="OTP 19.0"/>
       <fsummary>Finish loading a list of prepared modules atomically</fsummary>
       <desc>
         <p>Tries to load code for all modules that have been previously
@@ -611,7 +611,7 @@ ok = code:finish_loading(Prepared),
 	<taglist>
 	  <tag><c>not_purged</c></tag>
 	  <item>
-	    <p>The object code can not be loaded because an old version
+	    <p>The object code cannot be loaded because an old version
 	    of the code already exists.</p>
 	  </item>
 	  <tag><c>sticky_directory</c></tag>
@@ -627,7 +627,7 @@ ok = code:finish_loading(Prepared),
       </desc>
     </func>
     <func>
-      <name name="ensure_modules_loaded" arity="1"/>
+      <name name="ensure_modules_loaded" arity="1" since="OTP 19.0"/>
       <fsummary>Ensure that a list of modules is loaded</fsummary>
       <desc>
         <p>Tries to load any modules not already loaded in the list
@@ -639,7 +639,7 @@ ok = code:finish_loading(Prepared),
       </desc>
     </func>
     <func>
-      <name name="delete" arity="1"/>
+      <name name="delete" arity="1" since=""/>
       <fsummary>Remove current code for a module.</fsummary>
       <desc>
         <p>Removes the current code for <c><anno>Module</anno></c>, that is,
@@ -652,7 +652,7 @@ ok = code:finish_loading(Prepared),
       </desc>
     </func>
     <func>
-      <name name="purge" arity="1"/>
+      <name name="purge" arity="1" since=""/>
       <fsummary>Remove old code for a module.</fsummary>
       <desc>
         <p>Purges the code for <c><anno>Module</anno></c>, that is, removes code
@@ -668,7 +668,7 @@ ok = code:finish_loading(Prepared),
       </desc>
     </func>
     <func>
-      <name name="soft_purge" arity="1"/>
+      <name name="soft_purge" arity="1" since=""/>
       <fsummary>Remove old code for a module, unless no process uses it.</fsummary>
       <desc>
         <p>Purges the code for <c><anno>Module</anno></c>, that is, removes code
@@ -683,7 +683,7 @@ ok = code:finish_loading(Prepared),
       </desc>
     </func>
     <func>
-      <name name="is_loaded" arity="1"/>
+      <name name="is_loaded" arity="1" since=""/>
       <fsummary>Check if a module is loaded.</fsummary>
       <type name="loaded_filename"/>
       <type name="loaded_ret_atoms"/>
@@ -702,7 +702,7 @@ ok = code:finish_loading(Prepared),
       </desc>
     </func>
     <func>
-      <name name="all_loaded" arity="0"/>
+      <name name="all_loaded" arity="0" since=""/>
       <fsummary>Get all loaded modules.</fsummary>
       <type name="loaded_filename"/>
       <type name="loaded_ret_atoms"/>
@@ -716,7 +716,7 @@ ok = code:finish_loading(Prepared),
       </desc>
     </func>
     <func>
-      <name name="which" arity="1"/>
+      <name name="which" arity="1" since=""/>
       <fsummary>The object code file of a module.</fsummary>
       <type name="loaded_ret_atoms"/>
       <desc>
@@ -731,7 +731,7 @@ ok = code:finish_loading(Prepared),
       </desc>
     </func>
     <func>
-      <name name="get_object_code" arity="1"/>
+      <name name="get_object_code" arity="1" since=""/>
       <fsummary>Gets the object code for a module.</fsummary>
       <desc>
         <p>Searches the code path for the object code of module
@@ -750,7 +750,7 @@ rpc:call(Node, code, load_binary, [Module, Filename, Binary]),
       </desc>
     </func>
     <func>
-      <name name="root_dir" arity="0"/>
+      <name name="root_dir" arity="0" since=""/>
       <fsummary>Root directory of Erlang/OTP.</fsummary>
       <desc>
         <p>Returns the root directory of Erlang/OTP, which is
@@ -762,7 +762,7 @@ rpc:call(Node, code, load_binary, [Module, Filename, Binary]),
       </desc>
     </func>
     <func>
-      <name name="lib_dir" arity="0"/>
+      <name name="lib_dir" arity="0" since=""/>
       <fsummary>Library directory of Erlang/OTP.</fsummary>
       <desc>
         <p>Returns the library directory, <c>$OTPROOT/lib</c>, where
@@ -774,7 +774,7 @@ rpc:call(Node, code, load_binary, [Module, Filename, Binary]),
       </desc>
     </func>
     <func>
-      <name name="lib_dir" arity="1"/>
+      <name name="lib_dir" arity="1" since=""/>
       <fsummary>Library directory for an application.</fsummary>
       <desc>
         <p>Returns the path
@@ -807,7 +807,7 @@ rpc:call(Node, code, load_binary, [Module, Filename, Binary]),
       </desc>
     </func>
     <func>
-      <name name="lib_dir" arity="2"/>
+      <name name="lib_dir" arity="2" since=""/>
       <fsummary>Subdirectory for an application.</fsummary>
       <desc>
         <p>Returns the path to a subdirectory directly under the top
@@ -827,7 +827,7 @@ rpc:call(Node, code, load_binary, [Module, Filename, Binary]),
       </desc>
     </func>
     <func>
-      <name name="compiler_dir" arity="0"/>
+      <name name="compiler_dir" arity="0" since=""/>
       <fsummary>Library directory for the compiler.</fsummary>
       <desc>
         <p>Returns the compiler library directory. Equivalent to
@@ -835,7 +835,7 @@ rpc:call(Node, code, load_binary, [Module, Filename, Binary]),
       </desc>
     </func>
     <func>
-      <name name="priv_dir" arity="1"/>
+      <name name="priv_dir" arity="1" since=""/>
       <fsummary>Priv directory for an application.</fsummary>
       <desc>
         <p>Returns the path to the <c>priv</c> directory in an
@@ -846,7 +846,7 @@ rpc:call(Node, code, load_binary, [Module, Filename, Binary]),
       </desc>
     </func>
     <func>
-      <name name="objfile_extension" arity="0"/>
+      <name name="objfile_extension" arity="0" since=""/>
       <fsummary>Object code file extension.</fsummary>
       <desc>
         <p>Returns the object code file extension corresponding to
@@ -854,7 +854,7 @@ rpc:call(Node, code, load_binary, [Module, Filename, Binary]),
       </desc>
     </func>
     <func>
-      <name name="stick_dir" arity="1"/>
+      <name name="stick_dir" arity="1" since=""/>
       <fsummary>Mark a directory as sticky.</fsummary>
       <desc>
         <p>Marks <c><anno>Dir</anno></c> as sticky.</p>
@@ -862,7 +862,7 @@ rpc:call(Node, code, load_binary, [Module, Filename, Binary]),
       </desc>
     </func>
     <func>
-      <name name="unstick_dir" arity="1"/>
+      <name name="unstick_dir" arity="1" since=""/>
       <fsummary>Remove a sticky directory mark.</fsummary>
       <desc>
         <p>Unsticks a directory that is marked as
@@ -871,7 +871,7 @@ rpc:call(Node, code, load_binary, [Module, Filename, Binary]),
       </desc>
     </func>
     <func>
-      <name name="is_sticky" arity="1"/>
+      <name name="is_sticky" arity="1" since=""/>
       <fsummary>Test if a module is sticky.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>Module</anno></c> is the
@@ -882,7 +882,7 @@ rpc:call(Node, code, load_binary, [Module, Filename, Binary]),
       </desc>
     </func>
     <func>
-      <name name="where_is_file" arity="1"/>
+      <name name="where_is_file" arity="1" since=""/>
       <fsummary>Full name of a file located in the code path.</fsummary>
       <desc>
         <p>Searches the code path for <c><anno>Filename</anno></c>, a file of
@@ -893,7 +893,7 @@ rpc:call(Node, code, load_binary, [Module, Filename, Binary]),
       </desc>
     </func>
     <func>
-      <name name="clash" arity="0"/>
+      <name name="clash" arity="0" since=""/>
       <fsummary>Search for modules with identical names.</fsummary>
       <desc>
         <p>Searches all directories in the code path for module names with
@@ -901,7 +901,7 @@ rpc:call(Node, code, load_binary, [Module, Filename, Binary]),
       </desc>
     </func>
     <func>
-      <name name="module_status" arity="1"/>
+      <name name="module_status" arity="1" since="OTP 20.0"/>
       <fsummary>Return the status of the module in relation to object file on disk.</fsummary>
       <desc>
 	<p>Returns:</p>
@@ -934,7 +934,7 @@ rpc:call(Node, code, load_binary, [Module, Filename, Binary]),
       </desc>
     </func>
     <func>
-      <name name="modified_modules" arity="0"/>
+      <name name="modified_modules" arity="0" since="OTP 20.0"/>
       <fsummary>Return a list of all modules modified on disk.</fsummary>
       <desc>
         <p>Returns the list of all currently loaded modules for which
@@ -943,7 +943,7 @@ rpc:call(Node, code, load_binary, [Module, Filename, Binary]),
       </desc>
     </func>
     <func>
-      <name name="is_module_native" arity="1"/>
+      <name name="is_module_native" arity="1" since=""/>
       <fsummary>Test if a module has native code.</fsummary>
       <desc>
 	<p>Returns:</p>
@@ -961,7 +961,7 @@ rpc:call(Node, code, load_binary, [Module, Filename, Binary]),
     </func>
 
     <func>
-      <name name="get_mode" arity="0"/>
+      <name name="get_mode" arity="0" since="OTP R16B"/>
       <fsummary>The mode of the code server.</fsummary>
       <desc>
         <p>Returns an atom describing the mode of the code server:
diff --git a/lib/kernel/doc/src/disk_log.xml b/lib/kernel/doc/src/disk_log.xml
index 884cb32c0c..e308b06f3c 100644
--- a/lib/kernel/doc/src/disk_log.xml
+++ b/lib/kernel/doc/src/disk_log.xml
@@ -34,7 +34,7 @@
     <rev>D</rev>
     <file>disk_log.sgml</file>
   </header>
-  <module>disk_log</module>
+  <module since="">disk_log</module>
   <modulesummary>A disk-based term logging facility.</modulesummary>
   <description>
     <p><c>disk_log</c> is a disk-based term logger that enables
@@ -238,7 +238,7 @@
   </datatypes>
   <funcs>
     <func>
-      <name name="accessible_logs" arity="0"/>
+      <name name="accessible_logs" arity="0" since=""/>
       <fsummary>Return the accessible disk logs on the current node.</fsummary>
       <desc>
         <p>Returns the names of the disk logs accessible on the current node.
@@ -248,8 +248,8 @@
       </desc>
     </func>
     <func>
-      <name name="alog" arity="2"/>
-      <name name="balog" arity="2"/>
+      <name name="alog" arity="2" since=""/>
+      <name name="balog" arity="2" since=""/>
       <fsummary>Asynchronously log an item on to a disk log.</fsummary>
       <type variable="Log"/>
       <type variable="Term" name_i="1"/>
@@ -275,8 +275,8 @@
       </desc>
     </func>
     <func>
-      <name name="alog_terms" arity="2"/>
-      <name name="balog_terms" arity="2"/>
+      <name name="alog_terms" arity="2" since=""/>
+      <name name="balog_terms" arity="2" since=""/>
       <fsummary>Asynchronously log many items on to a disk log.</fsummary>
       <type variable="Log"/>
       <type variable="TermList" name_i="1"/>
@@ -303,8 +303,8 @@
       </desc>
     </func>
     <func>
-      <name name="block" arity="1"/>
-      <name name="block" arity="2"/>
+      <name name="block" arity="1" since=""/>
+      <name name="block" arity="2" since=""/>
       <fsummary>Block a disk log.</fsummary>
       <type name="block_error_rsn"/>
       <desc>
@@ -330,21 +330,21 @@
       </desc>
     </func>
     <func>
-      <name name="change_header" arity="2"/>
+      <name name="change_header" arity="2" since=""/>
       <fsummary>Change option head or head_func for an owner of a disk log.</fsummary>
       <desc>
         <p>Changes the value of option <c>head</c> or <c>head_func</c> for an owner of a disk log.</p>
       </desc>
     </func>
     <func>
-      <name name="change_notify" arity="3"/>
+      <name name="change_notify" arity="3" since=""/>
       <fsummary>Change option notify for an owner of a disk log.</fsummary>
       <desc>
         <p>Changes the value of option <c>notify</c> for an owner of a disk log. </p>
       </desc>
     </func>
     <func>
-      <name name="change_size" arity="2"/>
+      <name name="change_size" arity="2" since=""/>
       <fsummary>Change the size of an open disk log.</fsummary>
       <desc>
         <p>Changes the size of an open log.
@@ -384,10 +384,10 @@
       </desc>
     </func>
     <func>
-      <name name="chunk" arity="2"/>
-      <name name="chunk" arity="3"/>
-      <name name="bchunk" arity="2"/>
-      <name name="bchunk" arity="3"/>
+      <name name="chunk" arity="2" since=""/>
+      <name name="chunk" arity="3" since=""/>
+      <name name="bchunk" arity="2" since=""/>
+      <name name="bchunk" arity="3" since=""/>
       <fsummary>Read a chunk of items written to a disk log.</fsummary>
       <type variable="Log"/>
       <type variable="Continuation"/>
@@ -447,7 +447,7 @@
       </desc>
     </func>
     <func>
-      <name name="chunk_info" arity="1"/>
+      <name name="chunk_info" arity="1" since=""/>
       <fsummary>Return information about a chunk continuation of a disk log.</fsummary>
       <desc>
         <p>Returns the pair <c>{node, <anno>Node</anno>}</c>,
@@ -457,7 +457,7 @@
       </desc>
     </func>
     <func>
-      <name name="chunk_step" arity="3"/>
+      <name name="chunk_step" arity="3" since=""/>
       <fsummary>Step forward or backward among the wrap log files of a disk log.</fsummary>
       <desc>
         <p>Can be used with <c>chunk/2,3</c> and <c>bchunk/2,3</c>
@@ -480,7 +480,7 @@
       </desc>
     </func>
     <func>
-      <name name="close" arity="1"/>
+      <name name="close" arity="1" since=""/>
       <fsummary>Close a disk log.</fsummary>
       <type name="close_error_rsn"/>
       <desc>
@@ -505,7 +505,7 @@
       </desc>
     </func>
     <func>
-      <name name="format_error" arity="1"/>
+      <name name="format_error" arity="1" since=""/>
       <fsummary>Return an English description of a disk log error reply.</fsummary>
       <desc>
         <p>Given the error returned by any function in this module, 
@@ -517,7 +517,7 @@
       </desc>
     </func>
     <func>
-      <name name="inc_wrap_file" arity="1"/>
+      <name name="inc_wrap_file" arity="1" since=""/>
       <fsummary>Change to the next wrap log file of a disk log.</fsummary>
       <type name="inc_wrap_error_rsn"/>
       <type name="invalid_header"/>
@@ -534,7 +534,7 @@
       </desc>
     </func>
     <func>
-      <name name="info" arity="1"/>
+      <name name="info" arity="1" since=""/>
       <fsummary>Return information about a disk log.</fsummary>
       <type name="dlog_info"/>
       <desc>
@@ -685,8 +685,8 @@
       </desc>
     </func>
     <func>
-      <name name="lclose" arity="1"/>
-      <name name="lclose" arity="2"/>
+      <name name="lclose" arity="1" since=""/>
+      <name name="lclose" arity="2" since=""/>
       <fsummary>Close a disk log on one node.</fsummary>
       <type name="lclose_error_rsn"/>
       <desc>
@@ -704,8 +704,8 @@
       </desc>
     </func>
     <func>
-      <name name="log" arity="2"/>
-      <name name="blog" arity="2"/>
+      <name name="log" arity="2" since=""/>
+      <name name="blog" arity="2" since=""/>
       <fsummary>Log an item onto a disk log.</fsummary>
       <type variable="Log"/>
       <type variable="Term" name_i="1"/>
@@ -739,8 +739,8 @@
       </desc>
     </func>
     <func>
-      <name name="log_terms" arity="2"/>
-      <name name="blog_terms" arity="2"/>
+      <name name="log_terms" arity="2" since=""/>
+      <name name="blog_terms" arity="2" since=""/>
       <fsummary>Log many items onto a disk log.</fsummary>
       <type variable="Log"/>
       <type variable="TermList" name_i="1"/>
@@ -768,7 +768,7 @@
       </desc>
     </func>
     <func>
-      <name name="open" arity="1"/>
+      <name name="open" arity="1" since=""/>
       <fsummary>Open a disk log file.</fsummary>
       <type name="dlog_options"/>
       <type name="dlog_option"/>
@@ -1041,7 +1041,7 @@
       </desc>
     </func>
     <func>
-      <name name="pid2name" arity="1"/>
+      <name name="pid2name" arity="1" since=""/>
       <fsummary>Return the name of the disk log handled by a pid.</fsummary>
       <desc>
         <p>Returns the log name
@@ -1053,9 +1053,9 @@
       </desc>
     </func>
     <func>
-      <name name="reopen" arity="2"/>
-      <name name="reopen" arity="3"/>
-      <name name="breopen" arity="3"/>
+      <name name="reopen" arity="2" since=""/>
+      <name name="reopen" arity="3" since=""/>
+      <name name="breopen" arity="3" since=""/>
       <fsummary>Reopen a disk log and save the old log.</fsummary>
       <type variable="Log"/>
       <type variable="File" name_i="1"/>
@@ -1087,7 +1087,7 @@
       </desc>
     </func>
     <func>
-      <name name="sync" arity="1"/>
+      <name name="sync" arity="1" since=""/>
       <fsummary>Flush the contents of a disk log to the disk.</fsummary>
       <type name="sync_error_rsn"/>
       <desc>
@@ -1097,9 +1097,9 @@
       </desc>
     </func>
     <func>
-      <name name="truncate" arity="1"/>
-      <name name="truncate" arity="2"/>
-      <name name="btruncate" arity="2"/>
+      <name name="truncate" arity="1" since=""/>
+      <name name="truncate" arity="2" since=""/>
+      <name name="btruncate" arity="2" since=""/>
       <fsummary>Truncate a disk log.</fsummary>
       <type variable="Log"/>
       <type variable="Head" name_i="2"/>
@@ -1129,7 +1129,7 @@
       </desc>
     </func>
     <func>
-      <name name="unblock" arity="1"/>
+      <name name="unblock" arity="1" since=""/>
       <fsummary>Unblock a disk log.</fsummary>
       <type name="unblock_error_rsn"/>
       <desc>
diff --git a/lib/kernel/doc/src/erl_boot_server.xml b/lib/kernel/doc/src/erl_boot_server.xml
index 4109251387..89f9855c49 100644
--- a/lib/kernel/doc/src/erl_boot_server.xml
+++ b/lib/kernel/doc/src/erl_boot_server.xml
@@ -28,7 +28,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>erl_boot_server</module>
+  <module since="">erl_boot_server</module>
   <modulesummary>Boot server for other Erlang machines.</modulesummary>
   <description>
     <p>This server is used to assist diskless Erlang nodes that fetch
@@ -52,14 +52,14 @@
   </description>
   <funcs>
     <func>
-      <name name="add_slave" arity="1"/>
+      <name name="add_slave" arity="1" since=""/>
       <fsummary>Add a slave to the list of allowed slaves.</fsummary>
       <desc>
         <p>Adds a <c><anno>Slave</anno></c> node to the list of allowed slave hosts.</p>
       </desc>
     </func>
     <func>
-      <name name="delete_slave" arity="1"/>
+      <name name="delete_slave" arity="1" since=""/>
       <fsummary>Delete a slave from the list of allowed slaves.</fsummary>
       <desc>
         <p>Deletes a <c><anno>Slave</anno></c> node from the list of allowed slave
@@ -67,7 +67,7 @@
       </desc>
     </func>
     <func>
-      <name name="start" arity="1"/>
+      <name name="start" arity="1" since=""/>
       <fsummary>Start the boot server.</fsummary>
       <desc>
         <p>Starts the boot server. <c><anno>Slaves</anno></c> is a list of
@@ -76,7 +76,7 @@
       </desc>
     </func>
     <func>
-      <name name="start_link" arity="1"/>
+      <name name="start_link" arity="1" since=""/>
       <fsummary>Start the boot server and link to the the caller.</fsummary>
       <desc>
         <p>Starts the boot server and links to the caller. This function
@@ -85,7 +85,7 @@
       </desc>
     </func>
     <func>
-      <name name="which_slaves" arity="0"/>
+      <name name="which_slaves" arity="0" since=""/>
       <fsummary>Return the current list of allowed slave hosts.</fsummary>
       <desc>
         <p>Returns the current list of allowed slave hosts.</p>
diff --git a/lib/kernel/doc/src/erl_ddll.xml b/lib/kernel/doc/src/erl_ddll.xml
index 75114e015c..52d5bcd079 100644
--- a/lib/kernel/doc/src/erl_ddll.xml
+++ b/lib/kernel/doc/src/erl_ddll.xml
@@ -28,7 +28,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>erl_ddll</module>
+  <module since="">erl_ddll</module>
   <modulesummary>Dynamic driver loader and linker.</modulesummary>
   <description>
     <p>This module provides an interface for loading
@@ -196,11 +196,11 @@
   </datatypes>
   <funcs>
     <func>
-      <name name="demonitor" arity="1"/>
+      <name name="demonitor" arity="1" since=""/>
       <fsummary>Remove a monitor for a driver.</fsummary>
       <desc>
         <p>Removes a driver monitor in much the same way as 
-          <seealso marker="erts:erlang#erlang:demonitor/1"><c>erlang:demonitor/1</c></seealso>
+          <seealso marker="erts:erlang#demonitor/1"><c>erlang:demonitor/1</c></seealso>
 	  in ERTS
 	  does with process monitors. For details about how to create
 	  driver monitors, see
@@ -212,7 +212,7 @@
       </desc>
     </func>
     <func>
-      <name name="format_error" arity="1"/>
+      <name name="format_error" arity="1" since=""/>
       <fsummary>Format an error descriptor.</fsummary>
       <desc>
         <p>Takes an <c><anno>ErrorDesc</anno></c> returned by load, unload, or
@@ -229,7 +229,7 @@
       </desc>
     </func>
     <func>
-      <name name="info" arity="0"/>
+      <name name="info" arity="0" since=""/>
       <fsummary>Retrieve information about all drivers.</fsummary>
       <desc>
         <p>Returns a list of tuples <c>{<anno>DriverName</anno>, <anno>InfoList</anno>}</c>,
@@ -240,7 +240,7 @@
       </desc>
     </func>
     <func>
-      <name name="info" arity="1"/>
+      <name name="info" arity="1" since=""/>
       <fsummary>Retrieve information about one driver.</fsummary>
       <desc>
         <p>Returns a list of tuples <c>{<anno>Tag</anno>, <anno>Value</anno>}</c>,
@@ -266,7 +266,7 @@
       </desc>
     </func>
     <func>
-      <name name="info" arity="2"/>
+      <name name="info" arity="2" since=""/>
       <fsummary>Retrieve specific information about one driver.</fsummary>
       <desc>
         <p>Returns specific information about one aspect of a driver.
@@ -328,7 +328,7 @@
       </desc>
     </func>
     <func>
-      <name name="load" arity="2"/>
+      <name name="load" arity="2" since=""/>
       <fsummary>Load a driver.</fsummary>
       <desc>
         <p>Loads and links the dynamic driver <c><anno>Name</anno></c>.
@@ -390,7 +390,7 @@
       </desc>
     </func>
     <func>
-      <name name="load_driver" arity="2"/>
+      <name name="load_driver" arity="2" since=""/>
       <fsummary>Load a driver.</fsummary>
       <desc>
         <p>Works essentially as <c>load/2</c>, but loads the driver
@@ -413,7 +413,7 @@
       </desc>
     </func>
     <func>
-      <name name="loaded_drivers" arity="0"/>
+      <name name="loaded_drivers" arity="0" since=""/>
       <fsummary>List loaded drivers.</fsummary>
       <desc>
         <p>Returns a list of all the available drivers, both
@@ -425,12 +425,12 @@
       </desc>
     </func>
     <func>
-      <name name="monitor" arity="2"/>
+      <name name="monitor" arity="2" since=""/>
       <fsummary>Create a monitor for a driver.</fsummary>
       <desc>
         <p>Creates a driver monitor and works in many
           ways as
-	  <seealso marker="erts:erlang#erlang:monitor/2"><c>erlang:monitor/2</c></seealso>
+	  <seealso marker="erts:erlang#monitor/2"><c>erlang:monitor/2</c></seealso>
 	  in ERTS,
           does for processes. When a driver changes state, the monitor
           results in a monitor message that is sent to the calling
@@ -588,7 +588,7 @@
       </desc>
     </func>
     <func>
-      <name name="reload" arity="2"/>
+      <name name="reload" arity="2" since=""/>
       <fsummary>Replace a driver.</fsummary>
       <desc>
         <p>Reloads the driver named <c><anno>Name</anno></c> from a possibly
@@ -626,7 +626,7 @@
       </desc>
     </func>
     <func>
-      <name name="reload_driver" arity="2"/>
+      <name name="reload_driver" arity="2" since=""/>
       <fsummary>Replace a driver.</fsummary>
       <desc>
         <p>Works exactly as <seealso marker="#reload/2"><c>reload/2</c></seealso>,
@@ -644,7 +644,7 @@
       </desc>
     </func>
     <func>
-      <name name="try_load" arity="3"/>
+      <name name="try_load" arity="3" since=""/>
       <fsummary>Load a driver.</fsummary>
       <desc>
         <p>Provides more control than the
@@ -931,7 +931,7 @@
       </desc>
     </func>
     <func>
-      <name name="try_unload" arity="2"/>
+      <name name="try_unload" arity="2" since=""/>
       <fsummary>Unload a driver.</fsummary>
       <desc>
         <p>This is the low-level function to unload (or decrement
@@ -1116,7 +1116,7 @@
       </desc>
     </func>
     <func>
-      <name name="unload" arity="1"/>
+      <name name="unload" arity="1" since=""/>
       <fsummary>Unload a driver.</fsummary>
       <desc>
         <p>Unloads, or at least dereferences the driver named
@@ -1143,7 +1143,7 @@
       </desc>
     </func>
     <func>
-      <name name="unload_driver" arity="1"/>
+      <name name="unload_driver" arity="1" since=""/>
       <fsummary>Unload a driver.</fsummary>
       <desc>
         <p>Unloads, or at least dereferences the driver named
diff --git a/lib/kernel/doc/src/erl_epmd.xml b/lib/kernel/doc/src/erl_epmd.xml
index 8b076cd2d7..2adbf11a28 100644
--- a/lib/kernel/doc/src/erl_epmd.xml
+++ b/lib/kernel/doc/src/erl_epmd.xml
@@ -28,7 +28,7 @@
     <date>2018-02-19</date>
     <rev>A</rev>
   </header>
-  <module>erl_epmd</module>
+  <module since="OTP R14B">erl_epmd</module>
   <modulesummary>
     Erlang interface towards epmd
   </modulesummary>
@@ -41,7 +41,7 @@
 
   <funcs>
     <func>
-      <name name="start_link" arity="0"/>
+      <name name="start_link" arity="0" since="OTP 21.0"/>
       <fsummary>Callback for erl_distribution supervisor.</fsummary>
       <desc>
         <p>This function is invoked as this module is added as a child of the
@@ -50,8 +50,8 @@
     </func>
 
     <func>
-      <name name="register_node" arity="2"/>
-      <name name="register_node" arity="3"/>
+      <name name="register_node" arity="2" since="OTP 21.0"/>
+      <name name="register_node" arity="3" since="OTP 21.0"/>
       <fsummary>Registers the node with <c>epmd</c>.</fsummary>
       <desc>
         <p>Registers the node with <c>epmd</c> and tells epmd what port will be
@@ -62,8 +62,8 @@
     </func>
 
     <func>
-      <name name="port_please" arity="2"/>
-      <name name="port_please" arity="3"/>
+      <name name="port_please" arity="2" since="OTP 21.0"/>
+      <name name="port_please" arity="3" since="OTP 21.0"/>
       <fsummary>Returns the port number for a given node.</fsummary>
       <desc>
         <p>Requests the distribution port for the given node of an EPMD
@@ -73,7 +73,7 @@
     </func>
 
     <func>
-      <name name="address_please" arity="3"/>
+      <name name="address_please" arity="3" since="OTP 21.0"/>
       <fsummary>Returns address and port.</fsummary>
       <desc>
         <p>Called by the distribution module. Resolves the <c>Host</c> to an IP
@@ -84,7 +84,7 @@
     </func>
 
     <func>
-      <name name="names" arity="1"/>
+      <name name="names" arity="1" since="OTP 21.0"/>
       <fsummary>Names of Erlang nodes at a host.</fsummary>
       <desc>
         <p>Called by <seealso marker="net_adm"><c>net_adm:names/0</c></seealso>.
diff --git a/lib/kernel/doc/src/error_handler.xml b/lib/kernel/doc/src/error_handler.xml
index e5639487dc..eb01e87aee 100644
--- a/lib/kernel/doc/src/error_handler.xml
+++ b/lib/kernel/doc/src/error_handler.xml
@@ -30,7 +30,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>error_handler</module>
+  <module since="">error_handler</module>
   <modulesummary>Default system error handler.</modulesummary>
   <description>
     <p>This module defines what happens when certain types
@@ -38,7 +38,7 @@
   </description>
   <funcs>
     <func>
-      <name name="raise_undef_exception" arity="3"/>
+      <name name="raise_undef_exception" arity="3" since="OTP R16B"/>
       <fsummary>Raise an undef exception.</fsummary>
       <type_desc variable="Args">
         A (possibly empty) list of arguments <c>Arg1,..,ArgN</c>
@@ -51,7 +51,7 @@
       </desc>
     </func>
     <func>
-      <name name="undefined_function" arity="3"/>
+      <name name="undefined_function" arity="3" since=""/>
       <fsummary>Called when an undefined function is encountered.</fsummary>
       <type_desc variable="Args">
         A (possibly empty) list of arguments <c>Arg1,..,ArgN</c>
@@ -93,7 +93,7 @@
       </desc>
     </func>
     <func>
-      <name name="undefined_lambda" arity="3"/>
+      <name name="undefined_lambda" arity="3" since=""/>
       <fsummary>Called when an undefined lambda (fun) is encountered.</fsummary>
       <type_desc variable="Args">
         A (possibly empty) list of arguments <c>Arg1,..,ArgN</c>
diff --git a/lib/kernel/doc/src/error_logger.xml b/lib/kernel/doc/src/error_logger.xml
index c3d68fd79f..c170b4fa34 100644
--- a/lib/kernel/doc/src/error_logger.xml
+++ b/lib/kernel/doc/src/error_logger.xml
@@ -28,7 +28,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>error_logger</module>
+  <module since="">error_logger</module>
   <modulesummary>Erlang error logger.</modulesummary>
   <description>
 
@@ -76,8 +76,8 @@
   </datatypes>
   <funcs>
     <func>
-      <name name="add_report_handler" arity="1"/>
-      <name name="add_report_handler" arity="2"/>
+      <name name="add_report_handler" arity="1" since=""/>
+      <name name="add_report_handler" arity="2" since=""/>
       <fsummary>Add an event handler to the error logger.</fsummary>
       <desc>
         <p>Adds a new event handler to the error logger. The event
@@ -96,7 +96,7 @@
       </desc>
     </func>
     <func>
-      <name name="delete_report_handler" arity="1"/>
+      <name name="delete_report_handler" arity="1" since=""/>
       <fsummary>Delete an event handler from the error logger.</fsummary>
       <desc>
         <p>Deletes an event handler from the error logger by calling
@@ -108,9 +108,9 @@
       </desc>
     </func>
     <func>
-      <name name="error_msg" arity="1"/>
-      <name name="error_msg" arity="2"/>
-      <name name="format" arity="2"/>
+      <name name="error_msg" arity="1" since=""/>
+      <name name="error_msg" arity="2" since=""/>
+      <name name="format" arity="2" since=""/>
       <fsummary>Log a standard error event.</fsummary>
       <desc>
         <p>Log a standard error event. The <c><anno>Format</anno></c>
@@ -142,7 +142,7 @@ ok</pre>
       </desc>
     </func>
     <func>
-      <name name="error_report" arity="1"/>
+      <name name="error_report" arity="1" since=""/>
       <fsummary>Log a standard error event.</fsummary>
       <desc>
         <p>Log a standard error event. Error logger forwards the event
@@ -169,7 +169,7 @@ ok</pre>
       </desc>
     </func>
     <func>
-      <name name="error_report" arity="2"/>
+      <name name="error_report" arity="2" since=""/>
       <fsummary>Log a user-defined error event.</fsummary>
       <desc>
         <p>Log a user-defined error event. Error logger forwards the
@@ -191,7 +191,7 @@ ok</pre>
       </desc>
     </func>
     <func>
-      <name name="get_format_depth" arity="0"/>
+      <name name="get_format_depth" arity="0" since="OTP 20.0"/>
       <fsummary>Get the value of the Kernel application variable
                 <c>error_logger_format_depth</c>.</fsummary>
       <desc>
@@ -211,8 +211,8 @@ ok</pre>
       </desc>
     </func>
     <func>
-      <name name="info_msg" arity="1"/>
-      <name name="info_msg" arity="2"/>
+      <name name="info_msg" arity="1" since=""/>
+      <name name="info_msg" arity="2" since=""/>
       <fsummary>Log a standard information event.</fsummary>
       <desc>
         <p>Log a standard information event. The <c><anno>Format</anno></c>
@@ -244,7 +244,7 @@ ok</pre>
       </desc>
     </func>
     <func>
-      <name name="info_report" arity="1"/>
+      <name name="info_report" arity="1" since=""/>
       <fsummary>Log a standard information event.</fsummary>
       <desc>
         <p>Log a standard information event. Error logger forwards the
@@ -271,7 +271,7 @@ ok</pre>
       </desc>
     </func>
     <func>
-      <name name="info_report" arity="2"/>
+      <name name="info_report" arity="2" since=""/>
       <fsummary>Log a user-defined information event.</fsummary>
       <desc>
         <p>Log a user-defined information event. Error logger forwards
@@ -294,9 +294,9 @@ ok</pre>
       </desc>
     </func>
     <func>
-      <name name="logfile" arity="1" clause_i="1"/>
-      <name name="logfile" arity="1" clause_i="2"/>
-      <name name="logfile" arity="1" clause_i="3"/>
+      <name name="logfile" arity="1" clause_i="1" since=""/>
+      <name name="logfile" arity="1" clause_i="2" since=""/>
+      <name name="logfile" arity="1" clause_i="3" since=""/>
       <fsummary>Enable or disable error printouts to a file.</fsummary>
       <type variable="Filename"/>
       <type variable="OpenReason" name_i="1"/>
@@ -346,7 +346,7 @@ ok</pre>
       </desc>
     </func>
     <func>
-      <name name="tty" arity="1"/>
+      <name name="tty" arity="1" since=""/>
       <fsummary>Enable or disable printouts to the terminal.</fsummary>
       <desc>
         <p>Enables (<c><anno>Flag</anno> == true</c>) or disables
@@ -363,7 +363,7 @@ ok</pre>
       </desc>
     </func>
     <func>
-      <name name="warning_map" arity="0"/>
+      <name name="warning_map" arity="0" since=""/>
       <fsummary>Return the current mapping for warning events.</fsummary>
       <desc>
         <p>Returns the current mapping for warning events. Events sent
@@ -400,8 +400,8 @@ ok</pre>
       </desc>
     </func>
     <func>
-      <name name="warning_msg" arity="1"/>
-      <name name="warning_msg" arity="2"/>
+      <name name="warning_msg" arity="1" since=""/>
+      <name name="warning_msg" arity="2" since=""/>
       <fsummary>Log a standard warning event.</fsummary>
       <desc>
         <p>Log a standard warning event. The <c><anno>Format</anno></c>
@@ -429,7 +429,7 @@ ok</pre>
       </desc>
     </func>
     <func>
-      <name name="warning_report" arity="1"/>
+      <name name="warning_report" arity="1" since=""/>
       <fsummary>Log a standard warning event.</fsummary>
       <desc>
         <p>Log a standard warning event. Error logger forwards the event
@@ -446,7 +446,7 @@ ok</pre>
       </desc>
     </func>
     <func>
-      <name name="warning_report" arity="2"/>
+      <name name="warning_report" arity="2" since=""/>
       <fsummary>Log a user-defined warning event.</fsummary>
       <desc>
         <p>Log a user-defined warning event. Error logger forwards the
diff --git a/lib/kernel/doc/src/file.xml b/lib/kernel/doc/src/file.xml
index 9acaf6b41e..fc25e83d40 100644
--- a/lib/kernel/doc/src/file.xml
+++ b/lib/kernel/doc/src/file.xml
@@ -28,7 +28,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>file</module>
+  <module since="">file</module>
   <modulesummary>File interface module.</modulesummary>
   <description>
     <p>This module provides an interface to the file system.</p>
@@ -186,7 +186,7 @@
 
   <funcs>
     <func>
-      <name name="advise" arity="4"/>
+      <name name="advise" arity="4" since="OTP R14B"/>
       <fsummary>Predeclare an access pattern for file data.</fsummary>
       <type name="posix_file_advise"/>
       <desc>
@@ -197,7 +197,7 @@
       </desc>
     </func>
     <func>
-      <name name="allocate" arity="3"/>
+      <name name="allocate" arity="3" since="OTP R16B"/>
       <fsummary>Allocate file space.</fsummary>
       <desc>
         <p><c>allocate/3</c> can be used to preallocate space for a file.</p>
@@ -209,7 +209,7 @@
       </desc>
     </func>
     <func>
-      <name name="change_group" arity="2"/>
+      <name name="change_group" arity="2" since=""/>
       <fsummary>Change group of a file.</fsummary>
       <desc>
         <p>Changes group of a file. See
@@ -217,7 +217,7 @@
       </desc>
     </func>
     <func>
-      <name name="change_mode" arity="2"/>
+      <name name="change_mode" arity="2" since="OTP R14B"/>
       <fsummary>Change permissions of a file.</fsummary>
       <desc>
         <p>Changes permissions of a file. See
@@ -225,7 +225,7 @@
       </desc>
     </func>
     <func>
-      <name name="change_owner" arity="2"/>
+      <name name="change_owner" arity="2" since=""/>
       <fsummary>Change owner of a file.</fsummary>
       <desc>
         <p>Changes owner of a file. See
@@ -233,7 +233,7 @@
       </desc>
     </func>
     <func>
-      <name name="change_owner" arity="3"/>
+      <name name="change_owner" arity="3" since=""/>
       <fsummary>Change owner and group of a file.</fsummary>
       <desc>
         <p>Changes owner and group of a file. See
@@ -241,7 +241,7 @@
       </desc>
     </func>
     <func>
-      <name name="change_time" arity="2"/>
+      <name name="change_time" arity="2" since=""/>
       <fsummary>Change the modification time of a file.</fsummary>
       <desc>
         <p>Changes the modification and access times of a file. See
@@ -249,7 +249,7 @@
       </desc>
     </func>
     <func>
-      <name name="change_time" arity="3"/>
+      <name name="change_time" arity="3" since=""/>
       <fsummary>Change the modification and last access time of a file.</fsummary>
       <desc>
         <p>Changes the modification and last access times of a file. See
@@ -257,7 +257,7 @@
       </desc>
     </func>
     <func>
-      <name name="close" arity="1"/>
+      <name name="close" arity="1" since=""/>
       <fsummary>Close a file.</fsummary>
       <desc>
         <p>Closes the file referenced by <c><anno>IoDevice</anno></c>. It mostly
@@ -270,7 +270,7 @@
       </desc>
     </func>
     <func>
-      <name name="consult" arity="1"/>
+      <name name="consult" arity="1" since=""/>
       <fsummary>Read Erlang terms from a file.</fsummary>
       <desc>
         <p>Reads Erlang terms, separated by '.', from
@@ -308,8 +308,8 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="copy" arity="2"/>
-      <name name="copy" arity="3"/>
+      <name name="copy" arity="2" since=""/>
+      <name name="copy" arity="3" since=""/>
       <fsummary>Copy file contents.</fsummary>
       <desc>
         <p>Copies <c><anno>ByteCount</anno></c> bytes from
@@ -346,7 +346,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="datasync" arity="1"/>
+      <name name="datasync" arity="1" since="OTP R14B"/>
       <fsummary>Synchronize the in-memory data of a file, ignoring most of its metadata, with that on the physical medium.</fsummary>
       <desc>
         <p>Ensures that any buffers kept by the operating system
@@ -369,7 +369,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="del_dir" arity="1"/>
+      <name name="del_dir" arity="1" since=""/>
       <fsummary>Delete a directory.</fsummary>
       <desc>
         <p>Tries to delete directory <c><anno>Dir</anno></c>.
@@ -405,7 +405,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="delete" arity="1"/>
+      <name name="delete" arity="1" since=""/>
       <fsummary>Delete a file.</fsummary>
       <desc>
         <p>Tries to delete file <c><anno>Filename</anno></c>.
@@ -442,7 +442,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="eval" arity="1"/>
+      <name name="eval" arity="1" since=""/>
       <fsummary>Evaluate Erlang expressions in a file.</fsummary>
       <desc>
         <p>Reads and evaluates Erlang expressions, separated by '.' (or
@@ -476,7 +476,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="eval" arity="2"/>
+      <name name="eval" arity="2" since=""/>
       <fsummary>Evaluate Erlang expressions in a file.</fsummary>
       <desc>
         <p>The same as <c>eval/1</c>, but the variable bindings
@@ -486,7 +486,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="format_error" arity="1"/>
+      <name name="format_error" arity="1" since=""/>
       <fsummary>Return a descriptive string for an error reason.</fsummary>
       <desc>
         <p>Given the error reason returned by any function in this
@@ -494,7 +494,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="get_cwd" arity="0"/>
+      <name name="get_cwd" arity="0" since=""/>
       <fsummary>Get the current working directory.</fsummary>
       <desc>
         <p>Returns <c>{ok, <anno>Dir</anno>}</c>, where <c><anno>Dir</anno></c>
@@ -516,7 +516,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="get_cwd" arity="1"/>
+      <name name="get_cwd" arity="1" since=""/>
       <fsummary>Get the current working directory for the specified drive.</fsummary>
       <desc>
 	<p>Returns <c>{ok, <anno>Dir</anno>}</c> or
@@ -547,7 +547,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="list_dir" arity="1"/>
+      <name name="list_dir" arity="1" since=""/>
       <fsummary>List files in a directory.</fsummary>
       <desc>
         <p>Lists all files in a directory, <em>except</em> files
@@ -578,7 +578,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="list_dir_all" arity="1"/>
+      <name name="list_dir_all" arity="1" since="OTP R16B"/>
       <fsummary>List all files in a directory.</fsummary>
       <desc>
         <p><marker id="list_dir_all"/>Lists all the files in a directory,
@@ -603,7 +603,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="make_dir" arity="1"/>
+      <name name="make_dir" arity="1" since=""/>
       <fsummary>Make a directory.</fsummary>
       <desc>
         <p>Tries to create directory <c><anno>Dir</anno></c>. Missing parent
@@ -637,7 +637,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="make_link" arity="2"/>
+      <name name="make_link" arity="2" since=""/>
       <fsummary>Make a hard link to a file.</fsummary>
       <desc>
         <p>Makes a hard link from <c><anno>Existing</anno></c> to
@@ -666,7 +666,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="make_symlink" arity="2"/>
+      <name name="make_symlink" arity="2" since=""/>
       <fsummary>Make a symbolic link to a file or directory.</fsummary>
       <desc>
         <p>Creates a symbolic link <c><anno>New</anno></c> to
@@ -702,7 +702,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="native_name_encoding" arity="0"/>
+      <name name="native_name_encoding" arity="0" since="OTP R14B01"/>
       <fsummary>Return the configured filename encoding of the VM.</fsummary>
       <desc>
 	<p><marker id="native_name_encoding"/>Returns
@@ -714,7 +714,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="open" arity="2"/>
+      <name name="open" arity="2" since=""/>
       <fsummary>Open a file.</fsummary>
       <desc>
         <p>Opens file <c><anno>File</anno></c> in the mode determined
@@ -997,7 +997,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="path_consult" arity="2"/>
+      <name name="path_consult" arity="2" since=""/>
       <fsummary>Read Erlang terms from a file.</fsummary>
       <desc>
         <p>Searches the path <c><anno>Path</anno></c> (a list of directory
@@ -1039,7 +1039,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="path_eval" arity="2"/>
+      <name name="path_eval" arity="2" since=""/>
       <fsummary>Evaluate Erlang expressions in a file.</fsummary>
       <desc>
         <p>Searches the path <c><anno>Path</anno></c> (a list of directory
@@ -1085,7 +1085,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="path_open" arity="3"/>
+      <name name="path_open" arity="3" since=""/>
       <fsummary>Open a file.</fsummary>
       <desc>
         <p>Searches the path <c><anno>Path</anno></c> (a list of directory
@@ -1114,7 +1114,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="path_script" arity="2"/>
+      <name name="path_script" arity="2" since=""/>
       <fsummary>Evaluate and return the value of Erlang expressions in a file.</fsummary>
       <desc>
         <p>Searches the path <c><anno>Path</anno></c> (a list of directory
@@ -1158,7 +1158,7 @@ f.txt:  {person, "kalle", 25}.
    </desc>
     </func>
     <func>
-      <name name="path_script" arity="3"/>
+      <name name="path_script" arity="3" since=""/>
       <fsummary>Evaluate and return the value of Erlang expressions in a file.</fsummary>
       <desc>
         <p>The same as <c>path_script/2</c> but the variable bindings
@@ -1168,7 +1168,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="pid2name" arity="1"/>
+      <name name="pid2name" arity="1" since=""/>
       <fsummary>Return the name of the file handled by a pid.</fsummary>
       <desc>
         <p>If <c><anno>Pid</anno></c> is an I/O device, that is, a pid returned from
@@ -1193,7 +1193,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="position" arity="2"/>
+      <name name="position" arity="2" since=""/>
       <fsummary>Set position in a file.</fsummary>
       <desc>
         <p>Sets the position of the file referenced by <c><anno>IoDevice</anno></c>
@@ -1245,7 +1245,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="pread" arity="2"/>
+      <name name="pread" arity="2" since=""/>
       <fsummary>Read from a file at certain positions.</fsummary>
       <desc>
         <p>Performs a sequence of <c>pread/3</c> in one operation, 
@@ -1263,7 +1263,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="pread" arity="3"/>
+      <name name="pread" arity="3" since=""/>
       <fsummary>Read from a file at a certain position.</fsummary>
       <desc>
         <p>Combines <c>position/2</c> and <c>read/2</c> in one
@@ -1283,7 +1283,7 @@ f.txt:  {person, "kalle", 25}.
         </desc>
     </func>
     <func>
-      <name name="pwrite" arity="2"/>
+      <name name="pwrite" arity="2" since=""/>
       <fsummary>Write to a file at certain positions.</fsummary>
       <desc>
         <p>Performs a sequence of <c>pwrite/3</c> in one operation, 
@@ -1298,7 +1298,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="pwrite" arity="3"/>
+      <name name="pwrite" arity="3" since=""/>
       <fsummary>Write to a file at a certain position.</fsummary>
       <desc>
         <p>Combines <c>position/2</c> and <c>write/2</c> in one
@@ -1317,7 +1317,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="read" arity="2"/>
+      <name name="read" arity="2" since=""/>
       <fsummary>Read from a file.</fsummary>
       <desc>
         <p>Reads <c><anno>Number</anno></c> bytes/characters from the file
@@ -1371,7 +1371,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="read_file" arity="1"/>
+      <name name="read_file" arity="1" since=""/>
       <fsummary>Read a file.</fsummary>
       <desc>
         <p>Returns <c>{ok, <anno>Binary</anno>}</c>, where
@@ -1407,8 +1407,8 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="read_file_info" arity="1"/>
-      <name name="read_file_info" arity="2"/>
+      <name name="read_file_info" arity="1" since=""/>
+      <name name="read_file_info" arity="2" since="OTP R15B"/>
       <fsummary>Retrieve information about a file.</fsummary>
       <desc>
         <p>Retrieves information about a file. Returns
@@ -1562,7 +1562,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="read_line" arity="1"/>
+      <name name="read_line" arity="1" since=""/>
       <fsummary>Read a line from a file.</fsummary>
       <desc>
         <p>Reads a line of bytes/characters from the file referenced by
@@ -1619,7 +1619,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="read_link" arity="1"/>
+      <name name="read_link" arity="1" since=""/>
       <fsummary>See what a link is pointing to.</fsummary>
       <desc>
         <p><marker id="read_link_all"/>Returns
@@ -1649,7 +1649,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="read_link_all" arity="1"/>
+      <name name="read_link_all" arity="1" since="OTP R16B"/>
       <fsummary>See what a link is pointing to.</fsummary>
       <desc>
         <p>Returns <c>{ok, <anno>Filename</anno>}</c> if
@@ -1677,8 +1677,8 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="read_link_info" arity="1"/>
-      <name name="read_link_info" arity="2"/>
+      <name name="read_link_info" arity="1" since=""/>
+      <name name="read_link_info" arity="2" since="OTP R15B"/>
       <fsummary>Retrieve information about a link or file.</fsummary>
       <desc>
 	<p>Works like
@@ -1699,7 +1699,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="rename" arity="2"/>
+      <name name="rename" arity="2" since=""/>
       <fsummary>Rename a file.</fsummary>
       <desc>
         <p>Tries to rename the file <c><anno>Source</anno></c> to
@@ -1762,7 +1762,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="script" arity="1"/>
+      <name name="script" arity="1" since=""/>
       <fsummary>Evaluate and return the value of Erlang expressions in a file.</fsummary>
       <desc>
         <p>Reads and evaluates Erlang expressions, separated by '.' (or
@@ -1797,7 +1797,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="script" arity="2"/>
+      <name name="script" arity="2" since=""/>
       <fsummary>Evaluate and return the value of Erlang expressions in a file.</fsummary>
       <desc>
         <p>The same as <c>script/1</c> but the variable bindings
@@ -1807,7 +1807,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="sendfile" arity="2"/>
+      <name name="sendfile" arity="2" since="OTP R15B"/>
       <fsummary>Send a file to a socket.</fsummary>
       <desc>
         <p>Sends the file <c>Filename</c> to <c>Socket</c>.
@@ -1816,7 +1816,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="sendfile" arity="5"/>
+      <name name="sendfile" arity="5" since="OTP R15B"/>
       <fsummary>Send a file to a socket.</fsummary>
       <type name="sendfile_option"/>
       <desc>
@@ -1843,7 +1843,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="set_cwd" arity="1"/>
+      <name name="set_cwd" arity="1" since=""/>
       <fsummary>Set the current working directory.</fsummary>
       <desc>
         <p>Sets the current working directory of the file server to
@@ -1890,7 +1890,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="sync" arity="1"/>
+      <name name="sync" arity="1" since=""/>
       <fsummary>Synchronize the in-memory state of a file with that on the physical medium.</fsummary>
       <desc>
         <p>Ensures that any buffers kept by the operating system
@@ -1906,7 +1906,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="truncate" arity="1"/>
+      <name name="truncate" arity="1" since=""/>
       <fsummary>Truncate a file.</fsummary>
       <desc>
         <p>Truncates the file referenced by <c><anno>IoDevice</anno></c> at
@@ -1915,7 +1915,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="write" arity="2"/>
+      <name name="write" arity="2" since=""/>
       <fsummary>Write to a file.</fsummary>
       <desc>
         <p>Writes <c><anno>Bytes</anno></c> to the file referenced by
@@ -1941,7 +1941,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="write_file" arity="2"/>
+      <name name="write_file" arity="2" since=""/>
       <fsummary>Write a file.</fsummary>
       <desc>
         <p>Writes the contents of the <c>iodata</c> term <c><anno>Bytes</anno></c>
@@ -1978,7 +1978,7 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="write_file" arity="3"/>
+      <name name="write_file" arity="3" since=""/>
       <fsummary>Write a file.</fsummary>
       <desc>
         <p>Same as <c>write_file/2</c>, but takes a third argument
@@ -1989,8 +1989,8 @@ f.txt:  {person, "kalle", 25}.
       </desc>
     </func>
     <func>
-      <name name="write_file_info" arity="2"/>
-      <name name="write_file_info" arity="3"/>
+      <name name="write_file_info" arity="2" since=""/>
+      <name name="write_file_info" arity="3" since="OTP R15B"/>
       <fsummary>Change file information.</fsummary>
       <desc>
         <p>Changes file information. Returns <c>ok</c> if successful,
diff --git a/lib/kernel/doc/src/gen_sctp.xml b/lib/kernel/doc/src/gen_sctp.xml
index 1e08b25f66..61ac1485c1 100644
--- a/lib/kernel/doc/src/gen_sctp.xml
+++ b/lib/kernel/doc/src/gen_sctp.xml
@@ -32,7 +32,7 @@
     <rev>A</rev>
     <file>gen_sctp.xml</file>
   </header>
-  <module>gen_sctp</module>
+  <module since="">gen_sctp</module>
   <modulesummary>Functions for communicating with sockets using the SCTP
     protocol.</modulesummary>
   <description>
@@ -100,7 +100,7 @@
 
   <funcs>
     <func>
-      <name name="abort" arity="2"/>
+      <name name="abort" arity="2" since=""/>
       <fsummary>Abnormally terminate the association specified by
         <c>Assoc</c>, without flushing of unsent data.</fsummary>
       <desc>
@@ -113,7 +113,7 @@
     </func>
 
     <func>
-      <name name="close" arity="1"/>
+      <name name="close" arity="1" since=""/>
       <fsummary>Close the socket and all associations on it.</fsummary>
       <desc>
         <p>Closes the socket and all associations on it. The unsent
@@ -128,7 +128,7 @@
     </func>
 
     <func>
-      <name name="connect" arity="4"/>
+      <name name="connect" arity="4" since=""/>
       <fsummary>Same as <c>connect(Socket, Addr, Port, Opts, infinity)</c>.</fsummary>
       <desc>
         <p>Same as <c>connect(<anno>Socket</anno>, <anno>Addr</anno>,
@@ -137,7 +137,7 @@
     </func>
 
     <func>
-      <name name="connect" arity="5"/>
+      <name name="connect" arity="5" since=""/>
       <fsummary>Establish a new association for socket <c>Socket</c>, with a
         peer (SCTP server socket).</fsummary>
       <desc>
@@ -213,7 +213,7 @@ connect(Socket, Ip, Port>,
     </func>
 
     <func>
-      <name name="connect_init" arity="4"/>
+      <name name="connect_init" arity="4" since="OTP R13B04"/>
       <fsummary>Same as <c>connect_init(Socket, Addr, Port, Opts, infinity)</c>..</fsummary>
       <desc>
         <p>Same as <c>connect_init(<anno>Socket</anno>, <anno>Addr</anno>,
@@ -222,7 +222,7 @@ connect(Socket, Ip, Port>,
     </func>
 
     <func>
-      <name name="connect_init" arity="5"/>
+      <name name="connect_init" arity="5" since="OTP R13B04"/>
       <fsummary>Initiate a new association for socket <c>Socket</c>, with a
         peer (SCTP server socket).</fsummary>
       <desc>
@@ -248,18 +248,18 @@ connect(Socket, Ip, Port>,
     </func>
 
     <func>
-      <name name="controlling_process" arity="2"/>
+      <name name="controlling_process" arity="2" since=""/>
       <fsummary>Assign a new controlling process pid to the socket.</fsummary>
       <desc>
         <p>Assigns a new controlling process <c><anno>Pid</anno></c> to
           <c><anno>Socket</anno></c>. Same implementation as
-          <seealso marker="gen_udp:controlling_process/2"><c>gen_udp:controlling_process/2</c></seealso>.
+          <seealso marker="gen_udp#controlling_process/2"><c>gen_udp:controlling_process/2</c></seealso>.
         </p>
       </desc>
     </func>
 
     <func>
-      <name name="eof" arity="2"/>
+      <name name="eof" arity="2" since=""/>
       <fsummary>Gracefully terminate the association specified by <c>Assoc</c>,
         with flushing of all unsent data.</fsummary>
       <desc>
@@ -272,7 +272,7 @@ connect(Socket, Ip, Port>,
     </func>
 
     <func>
-      <name name="error_string" arity="1"/>
+      <name name="error_string" arity="1" since=""/>
       <fsummary>Translate an SCTP error number into a string.</fsummary>
       <desc>
         <p>Translates an SCTP error number from, for example,
@@ -283,8 +283,8 @@ connect(Socket, Ip, Port>,
     </func>
 
     <func>
-      <name name="listen" arity="2" clause_i="1"/>
-      <name name="listen" arity="2" clause_i="2"/>
+      <name name="listen" arity="2" clause_i="1" since=""/>
+      <name name="listen" arity="2" clause_i="2" since="OTP R15B"/>
       <fsummary>Set up a socket to listen.</fsummary>
       <desc>
         <p>Sets up a socket to listen on the IP address and port number
@@ -300,10 +300,10 @@ connect(Socket, Ip, Port>,
     </func>
 
     <func>
-      <name name="open" arity="0"/>
-      <name name="open" arity="1" clause_i="1"/>
-      <name name="open" arity="1" clause_i="2"/>
-      <name name="open" arity="2"/>
+      <name name="open" arity="0" since=""/>
+      <name name="open" arity="1" clause_i="1" since=""/>
+      <name name="open" arity="1" clause_i="2" since=""/>
+      <name name="open" arity="2" since=""/>
       <fsummary>Create an SCTP socket and binds it to local addresses.</fsummary>
       <desc>
         <p>Creates an SCTP socket and binds it to the local addresses
@@ -366,7 +366,7 @@ connect(Socket, Ip, Port>,
     </func>
 
     <func>
-      <name name="peeloff" arity="2"/>
+      <name name="peeloff" arity="2" since="OTP R15B"/>
       <fsummary>Peel off a type <c>stream</c> socket from a type
         <c>seqpacket</c> one.</fsummary>
       <desc>
@@ -387,8 +387,8 @@ connect(Socket, Ip, Port>,
     </func>
 
     <func>
-      <name name="recv" arity="1"/>
-      <name name="recv" arity="2"/>
+      <name name="recv" arity="1" since=""/>
+      <name name="recv" arity="2" since=""/>
       <fsummary>Receive a message from a socket.</fsummary>
       <desc>
         <p>Receives the <c><anno>Data</anno></c> message from any association
@@ -532,7 +532,7 @@ connect(Socket, Ip, Port>,
     </func>
 
     <func>
-      <name name="send" arity="3"/>
+      <name name="send" arity="3" since=""/>
       <fsummary>Send a message using an <c>#sctp_sndrcvinfo{}</c>record.</fsummary>
       <desc>
         <p>Sends the <c><anno>Data</anno></c> message with all sending
@@ -547,7 +547,7 @@ connect(Socket, Ip, Port>,
     </func>
 
     <func>
-      <name name="send" arity="4"/>
+      <name name="send" arity="4" since=""/>
       <fsummary>Send a message over an existing association and specified
         stream.</fsummary>
       <desc>
diff --git a/lib/kernel/doc/src/gen_tcp.xml b/lib/kernel/doc/src/gen_tcp.xml
index 24d63693fd..fc16473393 100644
--- a/lib/kernel/doc/src/gen_tcp.xml
+++ b/lib/kernel/doc/src/gen_tcp.xml
@@ -27,7 +27,7 @@
     <date>1997-10-24</date>
     <rev>A</rev>
   </header>
-  <module>gen_tcp</module>
+  <module since="">gen_tcp</module>
   <modulesummary>Interface to TCP/IP sockets.</modulesummary>
   <description>
     <p>This module provides functions for communicating
@@ -116,8 +116,8 @@ do_recv(Sock, Bs) ->
 
   <funcs>
     <func>
-      <name name="accept" arity="1"/>
-      <name name="accept" arity="2"/>
+      <name name="accept" arity="1" since=""/>
+      <name name="accept" arity="2" since=""/>
       <fsummary>Accept an incoming connection request on a listening socket.</fsummary>
       <type_desc variable="ListenSocket">Returned by
         <seealso marker="#listen/2"><c>listen/2</c></seealso>.
@@ -163,7 +163,7 @@ do_recv(Sock, Bs) ->
     </func>
 
     <func>
-      <name name="close" arity="1"/>
+      <name name="close" arity="1" since=""/>
       <fsummary>Close a TCP socket.</fsummary>
       <desc>
         <p>Closes a TCP socket.</p>
@@ -188,8 +188,8 @@ do_recv(Sock, Bs) ->
     </func>
 
     <func>
-      <name name="connect" arity="3"/>
-      <name name="connect" arity="4"/>
+      <name name="connect" arity="3" since=""/>
+      <name name="connect" arity="4" since=""/>
       <fsummary>Connect to a TCP port.</fsummary>
       <desc>
         <p>Connects to a server on TCP port <c><anno>Port</anno></c> on the host
@@ -268,7 +268,7 @@ do_recv(Sock, Bs) ->
     </func>
 
     <func>
-      <name name="controlling_process" arity="2"/>
+      <name name="controlling_process" arity="2" since=""/>
       <fsummary>Change controlling process of a socket.</fsummary>
       <desc>
         <p>Assigns a new controlling process <c><anno>Pid</anno></c> to
@@ -292,7 +292,7 @@ do_recv(Sock, Bs) ->
     </func>
 
     <func>
-      <name name="listen" arity="2"/>
+      <name name="listen" arity="2" since=""/>
       <fsummary>Set up a socket to listen on a port.</fsummary>
       <desc>
         <p>Sets up a socket to listen on port <c><anno>Port</anno></c> on
@@ -349,8 +349,8 @@ do_recv(Sock, Bs) ->
     </func>
 
     <func>
-      <name name="recv" arity="2"/>
-      <name name="recv" arity="3"/>
+      <name name="recv" arity="2" since=""/>
+      <name name="recv" arity="3" since=""/>
       <fsummary>Receive a packet from a passive socket.</fsummary>
       <type_desc variable="HttpPacket">See the description of
         <c>HttpPacket</c> in
@@ -375,7 +375,7 @@ do_recv(Sock, Bs) ->
     </func>
 
     <func>
-      <name name="send" arity="2"/>
+      <name name="send" arity="2" since=""/>
       <fsummary>Send a packet.</fsummary>
       <desc>
         <p>Sends a packet on a socket.</p>
@@ -386,7 +386,7 @@ do_recv(Sock, Bs) ->
     </func>
 
     <func>
-      <name name="shutdown" arity="2"/>
+      <name name="shutdown" arity="2" since=""/>
       <fsummary>Asynchronously close a socket.</fsummary>
       <desc>
         <p>Closes a socket in one or two directions.</p>
diff --git a/lib/kernel/doc/src/gen_udp.xml b/lib/kernel/doc/src/gen_udp.xml
index 840ca3c188..d20fc1fdfd 100644
--- a/lib/kernel/doc/src/gen_udp.xml
+++ b/lib/kernel/doc/src/gen_udp.xml
@@ -28,7 +28,7 @@
     <date>1997-12-03</date>
     <rev>A</rev>
   </header>
-  <module>gen_udp</module>
+  <module since="">gen_udp</module>
   <modulesummary>Interface to UDP sockets.</modulesummary>
   <description>
     <p>This module provides functions for communicating
@@ -53,7 +53,7 @@
 
   <funcs>
     <func>
-      <name name="close" arity="1"/>
+      <name name="close" arity="1" since=""/>
       <fsummary>Close a UDP socket.</fsummary>
       <desc>
         <p>Closes a UDP socket.</p>
@@ -61,7 +61,7 @@
     </func>
 
     <func>
-      <name name="controlling_process" arity="2"/>
+      <name name="controlling_process" arity="2" since=""/>
       <fsummary>Change controlling process of a socket.</fsummary>
       <desc>
         <p>Assigns a new controlling process <c><anno>Pid</anno></c> to
@@ -77,8 +77,8 @@
     </func>
 
     <func>
-      <name name="open" arity="1"/>
-      <name name="open" arity="2"/>
+      <name name="open" arity="1" since=""/>
+      <name name="open" arity="2" since=""/>
       <fsummary>Associate a UDP port number with the process calling it.</fsummary>
       <desc>
         <p>Associates a UDP port number (<c><anno>Port</anno></c>) with the
@@ -189,8 +189,8 @@
     </func>
 
     <func>
-      <name name="recv" arity="2"/>
-      <name name="recv" arity="3"/>
+      <name name="recv" arity="2" since=""/>
+      <name name="recv" arity="3" since=""/>
       <fsummary>Receive a packet from a passive socket.</fsummary>
       <desc>
         <p>
@@ -213,7 +213,7 @@
     </func>
 
     <func>
-      <name name="send" arity="4"/>
+      <name name="send" arity="4" since=""/>
       <fsummary>Send a packet.</fsummary>
       <desc>
         <p>
diff --git a/lib/kernel/doc/src/global.xml b/lib/kernel/doc/src/global.xml
index 4442741f54..dfe71de5ce 100644
--- a/lib/kernel/doc/src/global.xml
+++ b/lib/kernel/doc/src/global.xml
@@ -28,7 +28,7 @@
     <date>1997-11-17</date>
     <rev></rev>
   </header>
-  <module>global</module>
+  <module since="">global</module>
   <modulesummary>A global name registration facility.</modulesummary>
   <description>
     <p>This module consists of the following services:</p>
@@ -100,8 +100,8 @@
 
   <funcs>
     <func>
-      <name name="del_lock" arity="1"/>
-      <name name="del_lock" arity="2"/>
+      <name name="del_lock" arity="1" since=""/>
+      <name name="del_lock" arity="2" since=""/>
       <fsummary>Delete a lock.</fsummary>
       <desc>
         <p>Deletes the lock <c><anno>Id</anno></c> synchronously.</p>
@@ -109,7 +109,7 @@
     </func>
 
     <func>
-      <name name="notify_all_name" arity="3"/>
+      <name name="notify_all_name" arity="3" since=""/>
       <fsummary>Name resolving function that notifies both pids.</fsummary>
       <desc>
         <p>Can be used as a name resolving function for
@@ -123,7 +123,7 @@
     </func>
 
     <func>
-      <name name="random_exit_name" arity="3"/>
+      <name name="random_exit_name" arity="3" since=""/>
       <fsummary>Name resolving function that kills one pid.</fsummary>
       <desc>
         <p>Can be used as a name resolving function for
@@ -136,7 +136,7 @@
     </func>
 
     <func>
-      <name name="random_notify_name" arity="3"/>
+      <name name="random_notify_name" arity="3" since=""/>
       <fsummary>Name resolving function that notifies one pid.</fsummary>
       <desc>
         <p>Can be used as a name resolving function for
@@ -150,8 +150,8 @@
     </func>
 
     <func>
-      <name name="re_register_name" arity="2"/>
-      <name name="re_register_name" arity="3"/>
+      <name name="re_register_name" arity="2" since=""/>
+      <name name="re_register_name" arity="3" since=""/>
       <fsummary>Atomically re-register a name.</fsummary>
       <type name="method"/>
       <type_desc name="method">{<c>Module</c>, <c>Function</c>}
@@ -167,8 +167,8 @@
     </func>
 
     <func>
-      <name name="register_name" arity="2"/>
-      <name name="register_name" arity="3"/>
+      <name name="register_name" arity="2" since=""/>
+      <name name="register_name" arity="3" since=""/>
       <fsummary>Globally register a name for a pid.</fsummary>
       <type name="method"/>
       <type_desc name="method">{<c>Module</c>, <c>Function</c>} is also
@@ -221,7 +221,7 @@
     </func>
 
     <func>
-      <name name="registered_names" arity="0"/>
+      <name name="registered_names" arity="0" since=""/>
       <fsummary>All globally registered names.</fsummary>
       <desc>
         <p>Returns a list of all globally registered names.</p>
@@ -229,7 +229,7 @@
     </func>
 
     <func>
-      <name name="send" arity="2"/>
+      <name name="send" arity="2" since=""/>
       <fsummary>Send a message to a globally registered pid.</fsummary>
       <desc>
         <p>Sends message <c><anno>Msg</anno></c> to the pid globally registered
@@ -241,9 +241,9 @@
     </func>
 
     <func>
-      <name name="set_lock" arity="1"/>
-      <name name="set_lock" arity="2"/>
-      <name name="set_lock" arity="3"/>
+      <name name="set_lock" arity="1" since=""/>
+      <name name="set_lock" arity="2" since=""/>
+      <name name="set_lock" arity="3" since=""/>
       <fsummary>Set a lock on the specified nodes.</fsummary>
       <type name="id"/>
       <type name="retries"/>
@@ -287,7 +287,7 @@
     </func>
 
     <func>
-      <name name="sync" arity="0"/>
+      <name name="sync" arity="0" since=""/>
       <fsummary>Synchronize the global name server.</fsummary>
       <desc>
         <p>Synchronizes the global name server with all nodes known to
@@ -302,9 +302,9 @@
     </func>
 
     <func>
-      <name name="trans" arity="2"/>
-      <name name="trans" arity="3"/>
-      <name name="trans" arity="4"/>
+      <name name="trans" arity="2" since=""/>
+      <name name="trans" arity="3" since=""/>
+      <name name="trans" arity="4" since=""/>
       <fsummary>Micro transaction facility.</fsummary>
       <type name="retries"/>
       <type name="trans_fun"/>
@@ -322,7 +322,7 @@
     </func>
 
     <func>
-      <name name="unregister_name" arity="1"/>
+      <name name="unregister_name" arity="1" since=""/>
       <fsummary>Remove a globally registered name for a pid.</fsummary>
       <desc>
         <p>Removes the globally registered name <c><anno>Name</anno></c> from
@@ -331,7 +331,7 @@
     </func>
 
     <func>
-      <name name="whereis_name" arity="1"/>
+      <name name="whereis_name" arity="1" since=""/>
       <fsummary>Get the pid with a specified globally registered name.</fsummary>
       <desc>
         <p>Returns the pid with the globally registered name
diff --git a/lib/kernel/doc/src/global_group.xml b/lib/kernel/doc/src/global_group.xml
index 8f947b9adf..74d15cd476 100644
--- a/lib/kernel/doc/src/global_group.xml
+++ b/lib/kernel/doc/src/global_group.xml
@@ -28,7 +28,7 @@
     <date>1998-12-18</date>
     <rev>B</rev>
   </header>
-  <module>global_group</module>
+  <module since="">global_group</module>
   <modulesummary>Grouping nodes to global name registration groups.</modulesummary>
   <description>
     <p>This module makes it possible to partition the nodes of a
@@ -105,7 +105,7 @@
 
   <funcs>
     <func>
-      <name name="global_groups" arity="0"/>
+      <name name="global_groups" arity="0" since=""/>
       <fsummary>Return the global group names.</fsummary>
       <desc>
         <p>Returns a tuple containing the name of the global group that
@@ -116,7 +116,7 @@
     </func>
 
     <func>
-      <name name="info" arity="0"/>
+      <name name="info" arity="0" since=""/>
       <fsummary>Information about global groups.</fsummary>
       <type name="info_item"/>
       <type name="sync_state"/>
@@ -173,7 +173,7 @@
     </func>
 
     <func>
-      <name name="monitor_nodes" arity="1"/>
+      <name name="monitor_nodes" arity="1" since=""/>
       <fsummary>Subscribe to node status changes.</fsummary>
       <desc>
         <p>Depending on <c><anno>Flag</anno></c>, the calling process
@@ -187,7 +187,7 @@
     </func>
 
     <func>
-      <name name="own_nodes" arity="0"/>
+      <name name="own_nodes" arity="0" since=""/>
       <fsummary>Return the group nodes.</fsummary>
       <desc>
         <p>Returns the names of all group nodes, regardless of their
@@ -196,7 +196,7 @@
     </func>
 
     <func>
-      <name name="registered_names" arity="1"/>
+      <name name="registered_names" arity="1" since=""/>
       <fsummary>Return globally registered names.</fsummary>
       <desc>
         <p>Returns a list of all names that are globally registered
@@ -205,8 +205,8 @@
     </func>
 
     <func>
-      <name name="send" arity="2"/>
-      <name name="send" arity="3"/>
+      <name name="send" arity="2" since=""/>
+      <name name="send" arity="3" since=""/>
       <fsummary>Send a message to a globally registered pid.</fsummary>
       <desc>
         <p>Searches for <c><anno>Name</anno></c>, globally registered on
@@ -224,7 +224,7 @@
     </func>
 
     <func>
-      <name name="sync" arity="0"/>
+      <name name="sync" arity="0" since=""/>
       <fsummary>Synchronize the group nodes.</fsummary>
       <desc>
         <p>Synchronizes the group nodes, that is, the global name
@@ -242,8 +242,8 @@
     </func>
 
     <func>
-      <name name="whereis_name" arity="1"/>
-      <name name="whereis_name" arity="2"/>
+      <name name="whereis_name" arity="1" since=""/>
+      <name name="whereis_name" arity="2" since=""/>
       <fsummary>Get the pid with a specified globally registered name.</fsummary>
       <desc>
         <p>Searches for <c><anno>Name</anno></c>, globally registered on
diff --git a/lib/kernel/doc/src/heart.xml b/lib/kernel/doc/src/heart.xml
index ad1a2ffeb9..4243b1ffe8 100644
--- a/lib/kernel/doc/src/heart.xml
+++ b/lib/kernel/doc/src/heart.xml
@@ -28,7 +28,7 @@
     <date>1998-01-28</date>
     <rev>A</rev>
   </header>
-  <module>heart</module>
+  <module since="">heart</module>
   <modulesummary>Heartbeat monitoring of an Erlang runtime system.</modulesummary>
   <description>
     <p>This modules contains the interface to the <c>heart</c> process.
@@ -119,7 +119,7 @@
 
   <funcs>
     <func>
-      <name name="set_cmd" arity="1"/>
+      <name name="set_cmd" arity="1" since=""/>
       <fsummary>Set a temporary reboot command.</fsummary>
       <desc>
         <p>Sets a temporary reboot command. This command is used if
@@ -136,7 +136,7 @@
     </func>
 
     <func>
-      <name name="clear_cmd" arity="0"/>
+      <name name="clear_cmd" arity="0" since=""/>
       <fsummary>Clear the temporary boot command.</fsummary>
       <desc>
         <p>Clears the temporary boot command. If the system terminates,
@@ -145,7 +145,7 @@
     </func>
 
     <func>
-      <name name="get_cmd" arity="0"/>
+      <name name="get_cmd" arity="0" since=""/>
       <fsummary>Get the temporary reboot command.</fsummary>
       <desc>
         <p>Gets the temporary reboot command. If the command is cleared,
@@ -154,7 +154,7 @@
     </func>
 
     <func>
-      <name name="set_callback" arity="2"/>
+      <name name="set_callback" arity="2" since="OTP 18.3"/>
       <fsummary>Set a validation callback</fsummary>
       <desc>
           <p> This validation callback will be executed before any
@@ -166,14 +166,14 @@
       </desc>
     </func>
     <func>
-      <name name="clear_callback" arity="0"/>
+      <name name="clear_callback" arity="0" since="OTP 18.3"/>
       <fsummary>Clear the validation callback</fsummary>
       <desc>
           <p>Removes the validation callback call before heartbeats.</p>
       </desc>
     </func>
     <func>
-      <name name="get_callback" arity="0"/>
+      <name name="get_callback" arity="0" since="OTP 18.3"/>
       <fsummary>Get the validation callback</fsummary>
       <desc>
           <p>Get the validation callback. If the callback is cleared, <c>none</c> will be returned.</p>
@@ -181,7 +181,7 @@
     </func>
 
     <func>
-        <name name="set_options" arity="1"/>
+        <name name="set_options" arity="1" since="OTP 18.3"/>
         <fsummary>Set a list of options</fsummary>
         <desc>
             <p> Valid options <c>set_options</c> are: </p>
@@ -199,7 +199,7 @@
         </desc>
     </func>
     <func>
-      <name name="get_options" arity="0"/>
+      <name name="get_options" arity="0" since="OTP 18.3"/>
       <fsummary>Get the temporary reboot command</fsummary>
       <desc>
           <p>Returns <c>{ok, Options}</c> where <c>Options</c> is a list of current options enabled for heart.
diff --git a/lib/kernel/doc/src/inet.xml b/lib/kernel/doc/src/inet.xml
index 87b08e4e36..709ba8e8fd 100644
--- a/lib/kernel/doc/src/inet.xml
+++ b/lib/kernel/doc/src/inet.xml
@@ -28,7 +28,7 @@
     <date>1998-02-04</date>
     <rev>A</rev>
   </header>
-  <module>inet</module>
+  <module since="">inet</module>
   <modulesummary>Access to TCP/IP protocols.</modulesummary>
   <description>
     <p>This module provides access to TCP/IP protocols.</p>
@@ -298,7 +298,7 @@ fe80::204:acff:fe17:bf38
 
   <funcs>
     <func>
-      <name name="close" arity="1"/>
+      <name name="close" arity="1" since=""/>
       <fsummary>Close a socket of any type.</fsummary>
       <desc>
         <p>Closes a socket of any type.</p>
@@ -306,7 +306,7 @@ fe80::204:acff:fe17:bf38
     </func>
 
     <func>
-      <name name="format_error" arity="1"/>
+      <name name="format_error" arity="1" since=""/>
       <fsummary>Return a descriptive string for an error reason.</fsummary>
       <desc>
         <p>Returns a diagnostic error string. For possible POSIX values and
@@ -316,7 +316,7 @@ fe80::204:acff:fe17:bf38
     </func>
 
     <func>
-      <name name="get_rc" arity="0"/>
+      <name name="get_rc" arity="0" since=""/>
       <fsummary>Return a list of IP configuration parameters.</fsummary>
       <desc>
         <p>
@@ -335,7 +335,7 @@ fe80::204:acff:fe17:bf38
     </func>
 
     <func>
-      <name name="getaddr" arity="2"/>
+      <name name="getaddr" arity="2" since=""/>
       <fsummary>Return the IP address for a host.</fsummary>
       <desc>
         <p>Returns the IP address for <c><anno>Host</anno></c> as a tuple of
@@ -345,7 +345,7 @@ fe80::204:acff:fe17:bf38
     </func>
 
     <func>
-      <name name="getaddrs" arity="2"/>
+      <name name="getaddrs" arity="2" since=""/>
       <fsummary>Return the IP addresses for a host.</fsummary>
       <desc>
         <p>Returns a list of all IP addresses for <c><anno>Host</anno></c>.
@@ -355,7 +355,7 @@ fe80::204:acff:fe17:bf38
     </func>
 
     <func>
-      <name name="gethostbyaddr" arity="1"/>
+      <name name="gethostbyaddr" arity="1" since=""/>
       <fsummary>Return a hostent record for the host with the specified
         address.</fsummary>
       <desc>
@@ -364,7 +364,7 @@ fe80::204:acff:fe17:bf38
     </func>
 
     <func>
-      <name name="gethostbyname" arity="1"/>
+      <name name="gethostbyname" arity="1" since=""/>
       <fsummary>Return a hostent record for the host with the specified name.
       </fsummary>
       <desc>
@@ -376,7 +376,7 @@ fe80::204:acff:fe17:bf38
     </func>
 
     <func>
-      <name name="gethostbyname" arity="2"/>
+      <name name="gethostbyname" arity="2" since=""/>
       <fsummary>Return a hostent record for the host with the specified name.
       </fsummary>
       <desc>
@@ -386,7 +386,7 @@ fe80::204:acff:fe17:bf38
     </func>
 
     <func>
-      <name name="gethostname" arity="0"/>
+      <name name="gethostname" arity="0" since=""/>
       <fsummary>Return the local hostname.</fsummary>
       <desc>
         <p>Returns the local hostname. Never fails.</p>
@@ -394,7 +394,7 @@ fe80::204:acff:fe17:bf38
     </func>
 
     <func>
-      <name name="getifaddrs" arity="0"/>
+      <name name="getifaddrs" arity="0" since="OTP R14B01"/>
       <fsummary>Return a list of interfaces and their addresses.</fsummary>
       <desc>
         <p>
@@ -416,7 +416,7 @@ fe80::204:acff:fe17:bf38
     </func>
 
     <func>
-      <name>getifaddrs(Opts) ->
+      <name since="OTP 21.2">getifaddrs(Opts) ->
         {ok, [{Ifname, Ifopts}]} | {error, Posix}
       </name>
       <fsummary>Return a list of interfaces and their addresses.</fsummary>
@@ -459,7 +459,7 @@ fe80::204:acff:fe17:bf38
     </func>
 
     <func>
-      <name name="getopts" arity="2"/>
+      <name name="getopts" arity="2" since=""/>
       <fsummary>Get one or more options for a socket.</fsummary>
       <desc>
         <p>Gets one or more options for a socket. For a list of available
@@ -529,8 +529,8 @@ get_tcpi_sacked(Sock) ->
     </func>
 
     <func>
-      <name name="getstat" arity="1"/>
-      <name name="getstat" arity="2"/>
+      <name name="getstat" arity="1" since=""/>
+      <name name="getstat" arity="2" since=""/>
       <fsummary>Get one or more statistic options for a socket.</fsummary>
       <type name="stat_option"/>
       <desc>
@@ -586,9 +586,9 @@ get_tcpi_sacked(Sock) ->
     </func>
 
     <func>
-      <name name="i" arity="0" />
-      <name name="i" arity="1" />
-      <name name="i" arity="2" />
+      <name name="i" arity="0"  since="OTP 21.0"/>
+      <name name="i" arity="1"  since="OTP 21.0"/>
+      <name name="i" arity="2"  since="OTP 21.0"/>
       <fsummary>Displays information and statistics about sockets on the terminal</fsummary>
       <desc>
         <p>
@@ -641,7 +641,7 @@ get_tcpi_sacked(Sock) ->
     </func>
 
     <func>
-      <name name="ntoa" arity="1" />
+      <name name="ntoa" arity="1"  since="OTP R16B02"/>
       <fsummary>Convert IPv6/IPV4 address to ASCII.</fsummary>
       <desc>
 	<p>Parses an
@@ -651,7 +651,7 @@ get_tcpi_sacked(Sock) ->
     </func>
 
     <func>
-      <name name="parse_address" arity="1" />
+      <name name="parse_address" arity="1"  since="OTP R16B"/>
       <fsummary>Parse an IPv4 or IPv6 address.</fsummary>
       <desc>
 	<p>Parses an IPv4 or IPv6 address string and returns an
@@ -662,7 +662,7 @@ get_tcpi_sacked(Sock) ->
     </func>
 
     <func>
-      <name name="parse_ipv4_address" arity="1" />
+      <name name="parse_ipv4_address" arity="1"  since="OTP R16B"/>
       <fsummary>Parse an IPv4 address.</fsummary>
       <desc>
 	<p>Parses an IPv4 address string and returns an
@@ -672,7 +672,7 @@ get_tcpi_sacked(Sock) ->
     </func>
 
     <func>
-      <name name="parse_ipv4strict_address" arity="1" />
+      <name name="parse_ipv4strict_address" arity="1"  since="OTP R16B"/>
       <fsummary>Parse an IPv4 address strict.</fsummary>
       <desc>
 	<p>Parses an IPv4 address string containing four fields, that is,
@@ -683,7 +683,7 @@ get_tcpi_sacked(Sock) ->
     </func>
 
     <func>
-      <name name="parse_ipv6_address" arity="1" />
+      <name name="parse_ipv6_address" arity="1"  since="OTP R16B"/>
       <fsummary>Parse an IPv6 address.</fsummary>
       <desc>
 	<p>Parses an IPv6 address string and returns an
@@ -694,7 +694,7 @@ get_tcpi_sacked(Sock) ->
     </func>
 
     <func>
-      <name name="parse_ipv6strict_address" arity="1" />
+      <name name="parse_ipv6strict_address" arity="1"  since="OTP R16B"/>
       <fsummary>Parse an IPv6 address strict.</fsummary>
       <desc>
 	<p>Parses an IPv6 address string and returns an
@@ -704,7 +704,7 @@ get_tcpi_sacked(Sock) ->
     </func>
 
     <func>
-      <name name="ipv4_mapped_ipv6_address" arity="1" />
+      <name name="ipv4_mapped_ipv6_address" arity="1"  since="OTP 21.0"/>
       <fsummary>Convert to and from IPv4-mapped IPv6 address.</fsummary>
       <desc>
 	<p>
@@ -717,7 +717,7 @@ get_tcpi_sacked(Sock) ->
     </func>
 
     <func>
-      <name name="parse_strict_address" arity="1" />
+      <name name="parse_strict_address" arity="1"  since="OTP R16B"/>
       <fsummary>Parse an IPv4 or IPv6 address strict.</fsummary>
       <desc>
 	<p>Parses an IPv4 or IPv6 address string and returns an
@@ -728,7 +728,7 @@ get_tcpi_sacked(Sock) ->
     </func>
 
     <func>
-      <name name="peername" arity="1"/>
+      <name name="peername" arity="1" since=""/>
       <fsummary>Return the address and port for the other end of a connection.
       </fsummary>
       <desc>
@@ -741,7 +741,7 @@ get_tcpi_sacked(Sock) ->
     </func>
 
     <func>
-      <name name="peernames" arity="1"/>
+      <name name="peernames" arity="1" since="OTP R16B03"/>
       <fsummary>Return all address/port numbers for the other end of a
         connection.</fsummary>
       <desc>
@@ -755,7 +755,7 @@ get_tcpi_sacked(Sock) ->
     </func>
 
     <func>
-      <name name="peernames" arity="2"/>
+      <name name="peernames" arity="2" since="OTP R16B03"/>
       <fsummary>Return all address/port numbers for the other end of a
         connection.</fsummary>
       <desc>
@@ -774,7 +774,7 @@ get_tcpi_sacked(Sock) ->
     </func>
 
     <func>
-      <name name="port" arity="1"/>
+      <name name="port" arity="1" since=""/>
       <fsummary>Return the local port number for a socket.</fsummary>
       <desc>
         <p>Returns the local port number for a socket.</p>
@@ -782,7 +782,7 @@ get_tcpi_sacked(Sock) ->
     </func>
 
     <func>
-      <name name="setopts" arity="2"/>
+      <name name="setopts" arity="2" since=""/>
       <fsummary>Set one or more options for a socket.</fsummary>
       <desc>
         <p>Sets one or more options for a socket.</p>
@@ -1007,13 +1007,34 @@ get_tcpi_sacked(Sock) ->
             <marker id="option-linger"></marker>
           </item>
           <tag><c>{linger, {true|false, Seconds}}</c></tag>
-          <item>
+	  <item>
             <p>Determines the time-out, in seconds, for flushing unsent data
-              in the <c>close/1</c> socket call. If the first component of
-              the value tuple is <c>false</c>, the second is ignored. This
-              means that <c>close/1</c> returns immediately, not waiting
-              for data to be flushed. Otherwise, the second component is
-              the flushing time-out, in seconds.</p>
+              in the <c>close/1</c> socket call. </p>
+	    <p>The first component is if linger is enabled, the second component
+	    is the flushing time-out, in seconds. There are 3 alternatives:</p>
+	    <taglist>
+	      <tag><c>{false, _}</c></tag>
+	      <item>
+		<p>close/1 or shutdown/2 returns immediately,
+		not waiting for data to be flushed, with closing
+		happening in the background.</p>
+	      </item>
+	      <tag><c>{true, 0}</c></tag>
+	      <item>
+		<p>Aborts the connection when it is closed.
+		Discards any data still remaining in the send buffers
+		and sends RST to the peer.</p>
+		<p>This avoids TCP's TIME_WAIT state, but leaves open
+		the possibility that another "incarnation" of this connection
+		being created.</p>
+	      </item>
+	      <tag><c>{true, Time} when Time > 0</c></tag>
+	      <item>
+		<p>close/1 or shutdown/2 will not return until
+		all queued messages for the socket have been successfully
+		sent or the linger timeout (Time) has been reached.</p>
+	      </item>
+	    </taglist>
           </item>
           <tag><c>{low_msgq_watermark, Size}</c></tag>
           <item>
@@ -1486,7 +1507,7 @@ inet:setopts(Sock,[{raw,6,8,<<30:32/native>>}]),]]></code>
     </func>
 
     <func>
-      <name name="sockname" arity="1"/>
+      <name name="sockname" arity="1" since=""/>
       <fsummary>Return the local address and port number for a socket.
       </fsummary>
       <desc>
@@ -1499,7 +1520,7 @@ inet:setopts(Sock,[{raw,6,8,<<30:32/native>>}]),]]></code>
     </func>
 
     <func>
-      <name name="socknames" arity="1"/>
+      <name name="socknames" arity="1" since="OTP R16B03"/>
       <fsummary>Return all local address/port numbers for a socket.</fsummary>
       <desc>
 	<p>Equivalent to
@@ -1509,7 +1530,7 @@ inet:setopts(Sock,[{raw,6,8,<<30:32/native>>}]),]]></code>
     </func>
 
     <func>
-      <name name="socknames" arity="2"/>
+      <name name="socknames" arity="2" since="OTP R16B03"/>
       <fsummary>Return all local address/port numbers for a socket.</fsummary>
       <desc>
 	<p>Returns a list of all local address/port number pairs for a socket
diff --git a/lib/kernel/doc/src/inet_res.xml b/lib/kernel/doc/src/inet_res.xml
index 351d86a93a..1904e371f7 100644
--- a/lib/kernel/doc/src/inet_res.xml
+++ b/lib/kernel/doc/src/inet_res.xml
@@ -28,7 +28,7 @@
     <date>2009-09-11</date>
     <rev>A</rev>
   </header>
-  <module>inet_res</module>
+  <module since="">inet_res</module>
   <modulesummary>A rudimentary DNS client.</modulesummary>
   <description>
     <p>This module performs DNS name resolving to recursive name servers.</p>
@@ -185,8 +185,8 @@ inet_dns:record_type(_) -> undefined.</pre>
 
   <funcs>
     <func>
-      <name name="getbyname" arity="2"/>
-      <name name="getbyname" arity="3"/>
+      <name name="getbyname" arity="2" since=""/>
+      <name name="getbyname" arity="3" since=""/>
       <fsummary>Resolve a DNS record of the specified type for the specified
       host.</fsummary>
       <desc>
@@ -205,8 +205,8 @@ inet_dns:record_type(_) -> undefined.</pre>
     </func>
 
     <func>
-      <name name="gethostbyaddr" arity="1"/>
-      <name name="gethostbyaddr" arity="2"/>
+      <name name="gethostbyaddr" arity="1" since=""/>
+      <name name="gethostbyaddr" arity="2" since=""/>
       <fsummary>Return a hostent record for the host with the specified
         address.</fsummary>
       <desc>
@@ -217,9 +217,9 @@ inet_dns:record_type(_) -> undefined.</pre>
     </func>
 
     <func>
-      <name name="gethostbyname" arity="1"/>
-      <name name="gethostbyname" arity="2"/>
-      <name name="gethostbyname" arity="3"/>
+      <name name="gethostbyname" arity="1" since=""/>
+      <name name="gethostbyname" arity="2" since=""/>
+      <name name="gethostbyname" arity="3" since=""/>
       <fsummary>Return a hostent record for the host with the specified name.
       </fsummary>
       <desc>
@@ -235,9 +235,9 @@ inet_dns:record_type(_) -> undefined.</pre>
     </func>
 
     <func>
-      <name name="lookup" arity="3"/>
-      <name name="lookup" arity="4"/>
-      <name name="lookup" arity="5"/>
+      <name name="lookup" arity="3" since=""/>
+      <name name="lookup" arity="4" since=""/>
+      <name name="lookup" arity="5" since=""/>
       <fsummary>Resolve the DNS data for the record of the specified type
         and class for the specified name.</fsummary>
       <desc>
@@ -257,9 +257,9 @@ inet_dns:record_type(_) -> undefined.</pre>
     </func>
 
     <func>
-      <name name="resolve" arity="3"/>
-      <name name="resolve" arity="4"/>
-      <name name="resolve" arity="5"/>
+      <name name="resolve" arity="3" since=""/>
+      <name name="resolve" arity="4" since=""/>
+      <name name="resolve" arity="5" since=""/>
       <fsummary>Resolve a DNS record of the specified type and class
         for the specified name.</fsummary>
       <desc>
@@ -326,9 +326,9 @@ example_lookup(Name, Class, Type) ->
 
   <funcs>
     <func>
-      <name name="nslookup" arity="3"/>
-      <name name="nslookup" arity="4" clause_i="1"/>
-      <name name="nslookup" arity="4" clause_i="2"/>
+      <name name="nslookup" arity="3" since=""/>
+      <name name="nslookup" arity="4" clause_i="1" since=""/>
+      <name name="nslookup" arity="4" clause_i="2" since=""/>
       <fsummary>Resolve a DNS record of the specified type and class for the
         specified name.</fsummary>
       <type variable="Name"/>
@@ -344,8 +344,8 @@ example_lookup(Name, Class, Type) ->
     </func>
 
     <func>
-      <name name="nnslookup" arity="4"/>
-      <name name="nnslookup" arity="5"/>
+      <name name="nnslookup" arity="4" since=""/>
+      <name name="nnslookup" arity="5" since=""/>
       <fsummary>Resolve a DNS record of the specified type and class
         for the specified name.</fsummary>
       <desc>
diff --git a/lib/kernel/doc/src/kernel_app.xml b/lib/kernel/doc/src/kernel_app.xml
index 15dbdb47dc..7f9609d5c1 100644
--- a/lib/kernel/doc/src/kernel_app.xml
+++ b/lib/kernel/doc/src/kernel_app.xml
@@ -369,6 +369,14 @@ MaxT = TickTime + TickTime / 4</code>
           performed. This option ensures that <c>global</c> is
           synchronized.</p>
       </item>
+      <tag><c>start_distribution = true | false</c></tag>
+      <item>
+        <p>Starts all distribution services, such as <c>rpc</c>,
+          <c>global</c>, and <c>net_kernel</c> if the parameter is
+          <c>true</c>. This parameter is to be set to <c>false</c>
+          for systems who want to disable all distribution functionality.</p>
+        <p>Defaults to <c>true</c>.</p>
+      </item>
       <tag><c>start_dist_ac = true | false</c></tag>
       <item>
         <p>Starts the <c>dist_ac</c> server if the parameter is
@@ -510,11 +518,13 @@ MaxT = TickTime + TickTime / 4</code>
       parameters for Logger are not set.</p>
     <taglist>
       <tag><c>error_logger</c></tag>
-      <item>Replaced by setting the type of the default
-      <seealso marker="logger_std_h#type"><c>logger_std_h</c></seealso>
-      to the same value. Example:
+      <item>Replaced by setting the <seealso
+      marker="logger_std_h#type"><c>type</c></seealso>, and possibly
+      <seealso marker="logger_std_h#file"><c>file</c></seealso> and
+      <seealso marker="logger_std_h#modes"><c>modes</c></seealso>
+      parameters of the default <c>logger_std_h</c> handler. Example:
       <code type="none">
-erl -kernel logger '[{handler,default,logger_std_h,#{config=>#{type=>{file,"/tmp/erlang.log"}}}}]'
+erl -kernel logger '[{handler,default,logger_std_h,#{config=>#{file=>"/tmp/erlang.log"}}}]'
       </code>
       </item>
       <tag><c>error_logger_format_depth</c></tag>
diff --git a/lib/kernel/doc/src/logger.xml b/lib/kernel/doc/src/logger.xml
index 556f25f96a..2a060ce1f9 100644
--- a/lib/kernel/doc/src/logger.xml
+++ b/lib/kernel/doc/src/logger.xml
@@ -32,7 +32,7 @@
     <rev>A</rev>
     <file>logger.xml</file>
   </header>
-  <module>logger</module>
+  <module since="OTP 21.0">logger</module>
   <modulesummary>API module for Logger, the standard logging facility
     in Erlang/OTP.</modulesummary>
 
@@ -66,7 +66,7 @@ logger:error("error happened because: ~p", [Reason]). % Without macro
 [{kernel,
   [{logger,
     [{handler, default, logger_std_h,
-      #{config => #{type => {file, "path/to/file.log"}}}}]}]}].
+      #{config => #{file => "path/to/file.log"}}}]}]}].
       </code>
     <p>
       For more information about:
@@ -190,7 +190,7 @@ logger:error("error happened because: ~p", [Reason]). % Without macro
 	<list>
 	  <item><c>pid  => self()</c></item>
 	  <item><c>gl   => group_leader()</c></item>
-	  <item><c>time => erlang:system_time(microsecond)</c></item>
+	  <item><c>time => logger:timestamp()</c></item>
 	</list>
 	<p>When a log macro is used, Logger also inserts location
 	  information:</p>
@@ -245,6 +245,12 @@ logger:error("error happened because: ~p", [Reason]). % Without macro
       </desc>
     </datatype>
     <datatype>
+      <name name="olp_config"/>
+      <desc>
+	<p></p>
+      </desc>
+    </datatype>
+    <datatype>
       <name name="primary_config"/>
       <desc>
 	<p>Primary configuration data for Logger. The following
@@ -282,8 +288,8 @@ logger:error("error happened because: ~p", [Reason]). % Without macro
       <name name="timestamp"/>
       <desc>
 	<p>A timestamp produced
-	  with <seealso marker="erts:erlang#system_time-1">
-	    <c>erlang:system_time(microsecond)</c></seealso>.</p>
+	  with <seealso marker="#timestamp-0">
+	    <c>logger:timestamp()</c></seealso>.</p>
       </desc>
     </datatype>
   </datatypes>
@@ -334,9 +340,9 @@ logger:error("error happened because: ~p", [Reason]). % Without macro
   </section>
   <funcs>
     <func>
-      <name>emergency(StringOrReport[,Metadata])</name>
-      <name>emergency(Format,Args[,Metadata])</name>
-      <name>emergency(Fun,FunArgs[,Metadata])</name>
+      <name since="OTP 21.0">emergency(StringOrReport[,Metadata])</name>
+      <name since="OTP 21.0">emergency(Format,Args[,Metadata])</name>
+      <name since="OTP 21.0">emergency(Fun,FunArgs[,Metadata])</name>
       <fsummary>Logs the given message as level <c>emergency</c>.</fsummary>
       <desc>
         <p>Equivalent to
@@ -345,9 +351,9 @@ logger:error("error happened because: ~p", [Reason]). % Without macro
     </func>
 
     <func>
-      <name>alert(StringOrReport[,Metadata])</name>
-      <name>alert(Format,Args[,Metadata])</name>
-      <name>alert(Fun,FunArgs[,Metadata])</name>
+      <name since="OTP 21.0">alert(StringOrReport[,Metadata])</name>
+      <name since="OTP 21.0">alert(Format,Args[,Metadata])</name>
+      <name since="OTP 21.0">alert(Fun,FunArgs[,Metadata])</name>
       <fsummary>Logs the given message as level <c>alert</c>.</fsummary>
       <desc>
         <p>Equivalent to
@@ -356,9 +362,9 @@ logger:error("error happened because: ~p", [Reason]). % Without macro
     </func>
 
     <func>
-      <name>critical(StringOrReport[,Metadata])</name>
-      <name>critical(Format,Args[,Metadata])</name>
-      <name>critical(Fun,FunArgs[,Metadata])</name>
+      <name since="OTP 21.0">critical(StringOrReport[,Metadata])</name>
+      <name since="OTP 21.0">critical(Format,Args[,Metadata])</name>
+      <name since="OTP 21.0">critical(Fun,FunArgs[,Metadata])</name>
       <fsummary>Logs the given message as level <c>critical</c>.</fsummary>
       <desc>
         <p>Equivalent to
@@ -367,9 +373,9 @@ logger:error("error happened because: ~p", [Reason]). % Without macro
     </func>
 
     <func>
-      <name>error(StringOrReport[,Metadata])</name>
-      <name>error(Format,Args[,Metadata])</name>
-      <name>error(Fun,FunArgs[,Metadata])</name>
+      <name since="OTP 21.0">error(StringOrReport[,Metadata])</name>
+      <name since="OTP 21.0">error(Format,Args[,Metadata])</name>
+      <name since="OTP 21.0">error(Fun,FunArgs[,Metadata])</name>
       <fsummary>Logs the given message as level <c>error</c>.</fsummary>
       <desc>
         <p>Equivalent to
@@ -378,9 +384,9 @@ logger:error("error happened because: ~p", [Reason]). % Without macro
     </func>
 
     <func>
-      <name>warning(StringOrReport[,Metadata])</name>
-      <name>warning(Format,Args[,Metadata])</name>
-      <name>warning(Fun,FunArgs[,Metadata])</name>
+      <name since="OTP 21.0">warning(StringOrReport[,Metadata])</name>
+      <name since="OTP 21.0">warning(Format,Args[,Metadata])</name>
+      <name since="OTP 21.0">warning(Fun,FunArgs[,Metadata])</name>
       <fsummary>Logs the given message as level <c>warning</c>.</fsummary>
       <desc>
         <p>Equivalent to
@@ -389,9 +395,9 @@ logger:error("error happened because: ~p", [Reason]). % Without macro
     </func>
 
     <func>
-      <name>notice(StringOrReport[,Metadata])</name>
-      <name>notice(Format,Args[,Metadata])</name>
-     <name>notice(Fun,FunArgs[,Metadata])</name>
+      <name since="OTP 21.0">notice(StringOrReport[,Metadata])</name>
+      <name since="OTP 21.0">notice(Format,Args[,Metadata])</name>
+     <name since="OTP 21.0">notice(Fun,FunArgs[,Metadata])</name>
       <fsummary>Logs the given message as level <c>notice</c>.</fsummary>
       <desc>
         <p>Equivalent to
@@ -400,9 +406,9 @@ logger:error("error happened because: ~p", [Reason]). % Without macro
     </func>
 
     <func>
-      <name>info(StringOrReport[,Metadata])</name>
-      <name>info(Format,Args[,Metadata])</name>
-      <name>info(Fun,FunArgs[,Metadata])</name>
+      <name since="OTP 21.0">info(StringOrReport[,Metadata])</name>
+      <name since="OTP 21.0">info(Format,Args[,Metadata])</name>
+      <name since="OTP 21.0">info(Fun,FunArgs[,Metadata])</name>
       <fsummary>Logs the given message as level <c>info</c>.</fsummary>
       <desc>
         <p>Equivalent to
@@ -411,9 +417,9 @@ logger:error("error happened because: ~p", [Reason]). % Without macro
     </func>
 
     <func>
-      <name>debug(StringOrReport[,Metadata])</name>
-      <name>debug(Format,Args[,Metadata])</name>
-      <name>debug(Fun,FunArgs[,Metadata])</name>
+      <name since="OTP 21.0">debug(StringOrReport[,Metadata])</name>
+      <name since="OTP 21.0">debug(Format,Args[,Metadata])</name>
+      <name since="OTP 21.0">debug(Fun,FunArgs[,Metadata])</name>
       <fsummary>Logs the given message as level <c>debug</c>.</fsummary>
       <desc>
         <p>Equivalent to
@@ -422,12 +428,12 @@ logger:error("error happened because: ~p", [Reason]). % Without macro
     </func>
 
     <func>
-      <name name="log" arity="2"/>
-      <name name="log" arity="3" clause_i="1"/>
-      <name name="log" arity="3" clause_i="2"/>
-      <name name="log" arity="3" clause_i="3"/>
-      <name name="log" arity="4" clause_i="1"/>
-      <name name="log" arity="4" clause_i="2"/>
+      <name name="log" arity="2" since="OTP 21.0"/>
+      <name name="log" arity="3" clause_i="1" since="OTP 21.0"/>
+      <name name="log" arity="3" clause_i="2" since="OTP 21.0"/>
+      <name name="log" arity="3" clause_i="3" since="OTP 21.0"/>
+      <name name="log" arity="4" clause_i="1" since="OTP 21.0"/>
+      <name name="log" arity="4" clause_i="2" since="OTP 21.0"/>
       <fsummary>Logs the given message.</fsummary>
       <type variable="Level"/>
       <type variable="StringOrReport" name_i="1"/>
@@ -448,7 +454,7 @@ logger:error("error happened because: ~p", [Reason]). % Without macro
   </section>
   <funcs>
     <func>
-      <name name="add_handler" arity="3"/>
+      <name name="add_handler" arity="3" since="OTP 21.0"/>
       <fsummary>Add a handler with the given configuration.</fsummary>
       <desc>
         <p>Add a handler with the given configuration.</p>
@@ -459,7 +465,7 @@ logger:error("error happened because: ~p", [Reason]). % Without macro
     </func>
 
     <func>
-      <name name="add_handler_filter" arity="3"/>
+      <name name="add_handler_filter" arity="3" since="OTP 21.0"/>
       <fsummary>Add a filter to the specified handler.</fsummary>
       <desc>
         <p>Add a filter to the specified handler.</p>
@@ -500,7 +506,7 @@ logger:error("error happened because: ~p", [Reason]). % Without macro
     </func>
 
     <func>
-      <name name="add_handlers" arity="1" clause_i="1"/>
+      <name name="add_handlers" arity="1" clause_i="1" since="OTP 21.0"/>
       <fsummary>Set up log handlers from the application's
 	configuration parameters.</fsummary>
       <desc>
@@ -510,7 +516,7 @@ logger:error("error happened because: ~p", [Reason]). % Without macro
     </func>
 
     <func>
-      <name name="add_handlers" arity="1" clause_i="2"/>
+      <name name="add_handlers" arity="1" clause_i="2" since="OTP 21.0"/>
       <fsummary>Setup logger handlers.</fsummary>
       <type name="config_handler"/>
       <desc>
@@ -553,7 +559,7 @@ start(_, []) ->
     </func>
 
     <func>
-      <name name="add_primary_filter" arity="2"/>
+      <name name="add_primary_filter" arity="2" since="OTP 21.0"/>
       <fsummary>Add a primary filter to Logger.</fsummary>
       <desc>
         <p>Add a primary filter to Logger.</p>
@@ -594,16 +600,16 @@ start(_, []) ->
     </func>
 
     <func>
-      <name name="get_config" arity="0"/>
+      <name name="get_config" arity="0" since="OTP 21.0"/>
       <fsummary>Look up the current Logger configuration</fsummary>
       <desc>
-        <p>Look up all current Logger configuration, including primary
-          and handler configuration, and module level settings.</p>
+        <p>Look up all current Logger configuration, including primary,
+          handler, and proxy configuration, and module level settings.</p>
       </desc>
     </func>
 
     <func>
-      <name name="get_handler_config" arity="0"/>
+      <name name="get_handler_config" arity="0" since="OTP 21.0"/>
       <fsummary>Look up the current configuration for all handlers.</fsummary>
       <desc>
         <p>Look up the current configuration for all handlers.</p>
@@ -611,7 +617,7 @@ start(_, []) ->
     </func>
 
     <func>
-      <name name="get_handler_config" arity="1"/>
+      <name name="get_handler_config" arity="1" since="OTP 21.0"/>
       <fsummary>Look up the current configuration for the given
 	handler.</fsummary>
       <desc>
@@ -620,7 +626,7 @@ start(_, []) ->
     </func>
 
     <func>
-      <name name="get_handler_ids" arity="0"/>
+      <name name="get_handler_ids" arity="0" since="OTP 21.0"/>
       <fsummary>Look up the identities for all installed handlers.</fsummary>
       <desc>
         <p>Look up the identities for all installed handlers.</p>
@@ -628,7 +634,7 @@ start(_, []) ->
     </func>
 
     <func>
-      <name name="get_primary_config" arity="0"/>
+      <name name="get_primary_config" arity="0" since="OTP 21.0"/>
       <fsummary>Look up the current primary configuration for Logger.</fsummary>
       <desc>
         <p>Look up the current primary configuration for Logger.</p>
@@ -636,7 +642,18 @@ start(_, []) ->
     </func>
 
     <func>
-      <name name="get_module_level" arity="0"/>
+      <name name="get_proxy_config" arity="0" since="OTP 21.3"/>
+      <fsummary>Look up the current configuration for the Logger proxy.</fsummary>
+      <desc>
+        <p>Look up the current configuration for the Logger proxy.</p>
+	<p>For more information about the proxy, see
+	  section <seealso marker="logger_chapter#proxy">Logger
+	  Proxy</seealso> in the Kernel User's Guide.</p>
+      </desc>
+    </func>
+
+    <func>
+      <name name="get_module_level" arity="0" since="OTP 21.0"/>
       <fsummary>Look up all current module levels.</fsummary>
       <desc>
         <p>Look up all current module levels. Returns a list
@@ -648,7 +665,7 @@ start(_, []) ->
     </func>
 
     <func>
-      <name name="get_module_level" arity="1"/>
+      <name name="get_module_level" arity="1" since="OTP 21.0"/>
       <fsummary>Look up the current level for the given modules.</fsummary>
       <desc>
         <p>Look up the current level for the given modules. Returns a
@@ -660,7 +677,7 @@ start(_, []) ->
     </func>
 
     <func>
-      <name name="get_process_metadata" arity="0"/>
+      <name name="get_process_metadata" arity="0" since="OTP 21.0"/>
       <fsummary>Retrieve data set with set_process_metadata/1.</fsummary>
       <desc>
         <p>Retrieve data set
@@ -672,7 +689,16 @@ start(_, []) ->
     </func>
 
     <func>
-      <name name="remove_handler" arity="1"/>
+      <name name="i" arity="0" since="OTP 21.3"/>
+      <name name="i" arity="1" since="OTP 21.3"/>
+      <fsummary>Pretty print the Logger configuration.</fsummary>
+      <desc>
+        <p>Pretty print the Logger configuration.</p>
+      </desc>
+    </func>
+
+    <func>
+      <name name="remove_handler" arity="1" since="OTP 21.0"/>
       <fsummary>Remove the handler with the specified identity.</fsummary>
       <desc>
         <p>Remove the handler identified by <c><anno>HandlerId</anno></c>.</p>
@@ -680,7 +706,7 @@ start(_, []) ->
     </func>
 
     <func>
-      <name name="remove_handler_filter" arity="2"/>
+      <name name="remove_handler_filter" arity="2" since="OTP 21.0"/>
       <fsummary>Remove a filter from the specified handler.</fsummary>
       <desc>
         <p>Remove the filter identified
@@ -690,7 +716,7 @@ start(_, []) ->
     </func>
 
     <func>
-      <name name="remove_primary_filter" arity="1"/>
+      <name name="remove_primary_filter" arity="1" since="OTP 21.0"/>
       <fsummary>Remove a primary filter from Logger.</fsummary>
       <desc>
         <p>Remove the primary filter identified
@@ -699,7 +725,7 @@ start(_, []) ->
     </func>
 
     <func>
-      <name name="set_application_level" arity="2"/>
+      <name name="set_application_level" arity="2" since="OTP 21.1"/>
       <fsummary>Set the log level for all modules in the specified application.</fsummary>
       <desc>
         <p>Set the log level for all the modules of the specified application.</p>
@@ -710,7 +736,7 @@ start(_, []) ->
     </func>
 
     <func>
-      <name name="set_handler_config" arity="2"/>
+      <name name="set_handler_config" arity="2" since="OTP 21.0"/>
       <fsummary>Set configuration data for the specified handler.</fsummary>
       <desc>
         <p>Set configuration data for the specified handler. This
@@ -731,11 +757,11 @@ start(_, []) ->
     </func>
 
     <func>
-      <name name="set_handler_config" arity="3" clause_i="1"/>
-      <name name="set_handler_config" arity="3" clause_i="2"/>
-      <name name="set_handler_config" arity="3" clause_i="3"/>
-      <name name="set_handler_config" arity="3" clause_i="4"/>
-      <name name="set_handler_config" arity="3" clause_i="5"/>
+      <name name="set_handler_config" arity="3" clause_i="1" since="OTP 21.0"/>
+      <name name="set_handler_config" arity="3" clause_i="2" since="OTP 21.0"/>
+      <name name="set_handler_config" arity="3" clause_i="3" since="OTP 21.0"/>
+      <name name="set_handler_config" arity="3" clause_i="4" since="OTP 21.0"/>
+      <name name="set_handler_config" arity="3" clause_i="5" since="OTP 21.0"/>
       <fsummary>Add or update configuration data for the specified
         handler.</fsummary>
       <type variable="HandlerId"/>
@@ -767,7 +793,7 @@ start(_, []) ->
     </func>
 
     <func>
-      <name name="set_primary_config" arity="1"/>
+      <name name="set_primary_config" arity="1" since="OTP 21.0"/>
       <fsummary>Set primary configuration data for Logger.</fsummary>
       <desc>
         <p>Set primary configuration data for Logger. This
@@ -785,9 +811,9 @@ start(_, []) ->
     </func>
 
     <func>
-      <name name="set_primary_config" arity="2" clause_i="1"/>
-      <name name="set_primary_config" arity="2" clause_i="2"/>
-      <name name="set_primary_config" arity="2" clause_i="3"/>
+      <name name="set_primary_config" arity="2" clause_i="1" since="OTP 21.0"/>
+      <name name="set_primary_config" arity="2" clause_i="2" since="OTP 21.0"/>
+      <name name="set_primary_config" arity="2" clause_i="3" since="OTP 21.0"/>
       <fsummary>Add or update primary configuration data for Logger.</fsummary>
       <type variable="Level" name_i="1"/>
       <type variable="FilterDefault" name_i="2"/>
@@ -801,7 +827,28 @@ start(_, []) ->
     </func>
 
     <func>
-      <name name="set_module_level" arity="2"/>
+      <name name="set_proxy_config" arity="1" since="OTP 21.3"/>
+      <fsummary>Set configuration data for the Logger proxy.</fsummary>
+      <desc>
+        <p>Set configuration data for the Logger proxy. This
+          overwrites the current proxy configuration. Keys that are not
+          specified in the <c><anno>Config</anno></c> map gets default
+          values.</p>
+	<p>To modify the existing configuration,
+	  use <seealso marker="#update_proxy_config-1">
+	    <c>update_proxy_config/1</c></seealso>, or, if a more
+	  complex merge is needed, read the current configuration
+	  with <seealso marker="#get_proxy_config-0"><c>get_proxy_config/0</c>
+	  </seealso>, then do the merge before writing the new
+	  configuration back with this function.</p>
+	<p>For more information about the proxy, see
+	  section <seealso marker="logger_chapter#proxy">Logger
+	  Proxy</seealso> in the Kernel User's Guide.</p>
+      </desc>
+    </func>
+
+    <func>
+      <name name="set_module_level" arity="2" since="OTP 21.0"/>
       <fsummary>Set the log level for the specified modules.</fsummary>
       <desc>
         <p>Set the log level for the specified modules.</p>
@@ -841,7 +888,7 @@ start(_, []) ->
     </func>
 
     <func>
-      <name name="set_process_metadata" arity="1"/>
+      <name name="set_process_metadata" arity="1" since="OTP 21.0"/>
       <fsummary>Set metadata to use when logging from current process.</fsummary>
       <desc>
         <p>Set metadata which Logger shall automatically insert in
@@ -860,7 +907,7 @@ start(_, []) ->
     </func>
 
     <func>
-      <name name="unset_application_level" arity="1"/>
+      <name name="unset_application_level" arity="1" since="OTP 21.1"/>
       <fsummary>Unset the log level for all modules in the specified application.</fsummary>
       <desc>
         <p>Unset the log level for all the modules of the specified application.</p>
@@ -871,7 +918,7 @@ start(_, []) ->
     </func>
 
     <func>
-      <name name="unset_module_level" arity="0"/>
+      <name name="unset_module_level" arity="0" since="OTP 21.0"/>
       <fsummary>Remove module specific log settings for all modules.</fsummary>
       <desc>
         <p>Remove module specific log settings. After this, the
@@ -880,7 +927,7 @@ start(_, []) ->
     </func>
 
     <func>
-      <name name="unset_module_level" arity="1"/>
+      <name name="unset_module_level" arity="1" since="OTP 21.0"/>
       <fsummary>Remove module specific log settings for the given
 	modules.</fsummary>
       <desc>
@@ -890,7 +937,7 @@ start(_, []) ->
     </func>
 
     <func>
-      <name name="unset_process_metadata" arity="0"/>
+      <name name="unset_process_metadata" arity="0" since="OTP 21.0"/>
       <fsummary>Delete data set with set_process_metadata/1.</fsummary>
       <desc>
         <p>Delete data set
@@ -902,7 +949,7 @@ start(_, []) ->
     </func>
 
     <func>
-      <name name="update_formatter_config" arity="2"/>
+      <name name="update_formatter_config" arity="2" since="OTP 21.0"/>
       <fsummary>Update the formatter configuration for the specified handler.</fsummary>
       <desc>
         <p>Update the formatter configuration for the specified handler.</p>
@@ -917,7 +964,7 @@ start(_, []) ->
     </func>
 
     <func>
-      <name name="update_formatter_config" arity="3"/>
+      <name name="update_formatter_config" arity="3" since="OTP 21.0"/>
       <fsummary>Update the formatter configuration for the specified handler.</fsummary>
       <desc>
         <p>Update the formatter configuration for the specified handler.</p>
@@ -928,7 +975,7 @@ start(_, []) ->
     </func>
 
     <func>
-      <name name="update_handler_config" arity="2"/>
+      <name name="update_handler_config" arity="2" since="OTP 21.0"/>
       <fsummary>Update configuration data for the specified handler.</fsummary>
       <desc>
         <p>Update configuration data for the specified handler. This function
@@ -944,11 +991,11 @@ logger:set_handler_config(HandlerId, maps:merge(Old, Config)).
     </func>
 
     <func>
-      <name name="update_handler_config" arity="3" clause_i="1"/>
-      <name name="update_handler_config" arity="3" clause_i="2"/>
-      <name name="update_handler_config" arity="3" clause_i="3"/>
-      <name name="update_handler_config" arity="3" clause_i="4"/>
-      <name name="update_handler_config" arity="3" clause_i="5"/>
+      <name name="update_handler_config" arity="3" clause_i="1" since="OTP 21.2"/>
+      <name name="update_handler_config" arity="3" clause_i="2" since="OTP 21.2"/>
+      <name name="update_handler_config" arity="3" clause_i="3" since="OTP 21.2"/>
+      <name name="update_handler_config" arity="3" clause_i="4" since="OTP 21.2"/>
+      <name name="update_handler_config" arity="3" clause_i="5" since="OTP 21.2"/>
       <fsummary>Add or update configuration data for the specified
         handler.</fsummary>
       <type variable="HandlerId"/>
@@ -980,7 +1027,7 @@ logger:set_handler_config(HandlerId, maps:merge(Old, Config)).
     </func>
 
     <func>
-      <name name="update_primary_config" arity="1"/>
+      <name name="update_primary_config" arity="1" since="OTP 21.0"/>
       <fsummary>Update primary configuration data for Logger.</fsummary>
       <desc>
         <p>Update primary configuration data for Logger. This function
@@ -996,7 +1043,7 @@ logger:set_primary_config(maps:merge(Old, Config)).
     </func>
 
     <func>
-      <name name="update_process_metadata" arity="1"/>
+      <name name="update_process_metadata" arity="1" since="OTP 21.0"/>
       <fsummary>Set or update metadata to use when logging from
 	current process.</fsummary>
       <desc>
@@ -1013,6 +1060,25 @@ logger:set_process_metadata(maps:merge(logger:get_process_metadata(), Meta)).
 	  </seealso>.</p>
       </desc>
     </func>
+
+    <func>
+      <name name="update_proxy_config" arity="1" since="OTP 21.3"/>
+      <fsummary>Update configuration data for the Logger proxy.</fsummary>
+      <desc>
+        <p>Update configuration data for the Logger proxy. This function
+          behaves as if it was implemented as follows:</p>
+	<code type="erl">
+Old = logger:get_proxy_config(),
+logger:set_proxy_config(maps:merge(Old, Config)).
+	</code>
+	<p>To overwrite the existing configuration without any merge,
+	  use <seealso marker="#set_proxy_config-1"><c>set_proxy_config/1</c>
+	  </seealso>.</p>
+	<p>For more information about the proxy, see
+	  section <seealso marker="logger_chapter#proxy">Logger
+	  Proxy</seealso> in the Kernel User's Guide.</p>
+      </desc>
+    </func>
   </funcs>
 
   <section>
@@ -1021,7 +1087,7 @@ logger:set_process_metadata(maps:merge(logger:get_process_metadata(), Meta)).
   </section>
   <funcs>
     <func>
-      <name name="compare_levels" arity="2"/>
+      <name name="compare_levels" arity="2" since="OTP 21.0"/>
       <fsummary>Compare the severity of two log levels.</fsummary>
       <desc>
         <p>Compare the severity of two log levels. Returns <c>gt</c>
@@ -1032,7 +1098,7 @@ logger:set_process_metadata(maps:merge(logger:get_process_metadata(), Meta)).
     </func>
 
     <func>
-      <name name="format_report" arity="1"/>
+      <name name="format_report" arity="1" since="OTP 21.0"/>
       <fsummary>Convert a log message on report form to {Format, Args}.</fsummary>
       <desc>
         <p>Convert a log message on report form to <c>{Format,
@@ -1051,6 +1117,24 @@ logger:set_process_metadata(maps:merge(logger:get_process_metadata(), Meta)).
 	  a key-value list before formatting as such.</p>
       </desc>
     </func>
+
+    <func>
+      <name name="timestamp" arity="0" since="OTP 21.3"/>
+      <fsummary>Return a timestamp to insert in meta data for a log
+	event.</fsummary>
+      <desc>
+        <p>Return a timestamp that can be inserted as the <c>time</c>
+          field in the meta data for a log event. It is produced with
+	  <seealso marker="kernel:os#system_time-1">
+            <c>os:system_time(microsecond)</c></seealso>.</p>
+	<p>Notice that Logger automatically inserts a timestamp in the
+	  meta data unless it already exists. This function is
+	  exported for the rare case when the timestamp must be taken
+	  at a different point in time than when the log event is
+	  issued.</p>
+      </desc>
+    </func>
+
   </funcs>
 
   <section>
@@ -1062,7 +1146,7 @@ logger:set_process_metadata(maps:merge(logger:get_process_metadata(), Meta)).
 
   <funcs>
     <func>
-      <name>HModule:adding_handler(Config1) -> {ok, Config2} | {error,
+      <name since="OTP 21.0">HModule:adding_handler(Config1) -> {ok, Config2} | {error,
 	Reason}</name>
       <fsummary>An instance of this handler is about to be added.</fsummary>
       <type>
@@ -1088,7 +1172,7 @@ logger:set_process_metadata(maps:merge(logger:get_process_metadata(), Meta)).
     </func>
 
     <func>
-      <name>HModule:changing_config(SetOrUpdate, OldConfig, NewConfig) -> {ok, Config} | {error, Reason}</name>
+      <name since="OTP 21.2">HModule:changing_config(SetOrUpdate, OldConfig, NewConfig) -> {ok, Config} | {error, Reason}</name>
       <fsummary>The configuration for this handler is about to change.</fsummary>
       <type>
 	<v>SetOrUpdate = set | update</v>
@@ -1126,7 +1210,7 @@ logger:set_process_metadata(maps:merge(logger:get_process_metadata(), Meta)).
     </func>
 
     <func>
-      <name>HModule:filter_config(Config) -> FilteredConfig</name>
+      <name since="OTP 21.2">HModule:filter_config(Config) -> FilteredConfig</name>
       <fsummary>Remove internal data from configuration.</fsummary>
       <type>
 	<v>Config = FilteredConfig =
@@ -1146,7 +1230,7 @@ logger:set_process_metadata(maps:merge(logger:get_process_metadata(), Meta)).
     </func>
 
     <func>
-      <name>HModule:log(LogEvent, Config) -> void()</name>
+      <name since="OTP 21.0">HModule:log(LogEvent, Config) -> void()</name>
       <fsummary>Log the given log event.</fsummary>
       <type>
 	<v>LogEvent =
@@ -1169,7 +1253,7 @@ logger:set_process_metadata(maps:merge(logger:get_process_metadata(), Meta)).
     </func>
 
     <func>
-      <name>HModule:removing_handler(Config) -> ok</name>
+      <name since="OTP 21.0">HModule:removing_handler(Config) -> ok</name>
       <fsummary>The given handler is about to be removed.</fsummary>
       <type>
 	<v>Config =
@@ -1197,7 +1281,7 @@ logger:set_process_metadata(maps:merge(logger:get_process_metadata(), Meta)).
 
   <funcs>
     <func>
-      <name>FModule:check_config(FConfig) -> ok | {error, Reason}</name>
+      <name since="OTP 21.0">FModule:check_config(FConfig) -> ok | {error, Reason}</name>
       <fsummary>Validate the given formatter configuration.</fsummary>
       <type>
 	<v>FConfig =
@@ -1228,7 +1312,7 @@ logger:set_process_metadata(maps:merge(logger:get_process_metadata(), Meta)).
       </desc>
     </func>
     <func>
-      <name>FModule:format(LogEvent, FConfig) -> FormattedLogEntry</name>
+      <name since="OTP 21.0">FModule:format(LogEvent, FConfig) -> FormattedLogEntry</name>
       <fsummary>Format the given log event.</fsummary>
       <type>
 	<v>LogEvent =
@@ -1267,5 +1351,3 @@ logger:set_process_metadata(maps:merge(logger:get_process_metadata(), Meta)).
     </p>
   </section>
 </erlref>
-
-
diff --git a/lib/kernel/doc/src/logger_chapter.xml b/lib/kernel/doc/src/logger_chapter.xml
index 458e61cef5..1aa4b7a3a2 100644
--- a/lib/kernel/doc/src/logger_chapter.xml
+++ b/lib/kernel/doc/src/logger_chapter.xml
@@ -212,13 +212,13 @@
       <pre>fun((<seealso marker="logger#type-report"><c>logger:report()</c></seealso>,<seealso marker="logger#type-report_cb_config"><c>logger:report_cb_config()</c></seealso>) -> <seealso marker="stdlib:unicode#type-chardata"><c>unicode:chardata()</c></seealso>)
       </pre>
       <p>The fun must obey the <c>depth</c> and <c>chars_limit</c>
-      parameters provided in the second argument, as the formatter can
-      not do anything useful of these parameters with the returned
-      string. The extra data also contains a field named
-      <c>single_line</c>, indicating if the printed log message may
-      contain line breaks or not. This variant is used when the
-      formatting of the report depends on the size or single line
-      parameters.</p>
+	parameters provided in the second argument, as the formatter
+	cannot do anything useful of these parameters with the
+	returned string. The extra data also contains a field named
+	<c>single_line</c>, indicating if the printed log message may
+	contain line breaks or not. This variant is used when the
+	formatting of the report depends on the size or single line
+	parameters.</p>
       <p>Example, format string and arguments:</p>
       <code>logger:error("The file does not exist: ~ts",[Filename])</code>
       <p>Example, string:</p>
@@ -693,8 +693,10 @@ logger:debug(#{got => connection_request, id => Id, state => State},
 	  with <seealso marker="#logger_sasl_compatible">
 	    <c>logger_sasl_compatible</c></seealso>.</p>
 	<p>With this parameter, you can modify or disable the default
-	  handler, add custom handlers and primary logger filters, and
-	  set log levels per module.</p>
+	  handler, add custom handlers and primary logger filters, set
+	  log levels per module, and modify
+	  the <seealso marker="#proxy">proxy</seealso>
+	  configuration.</p>
 	<p><c>Config</c> is any (zero or more) of the following:</p>
 	<taglist>
           <tag><c>{handler, default, undefined}</c></tag>
@@ -716,7 +718,7 @@ logger:debug(#{got => connection_request, id => Id, state => State},
 	    </seealso></pre>
 	    <p>For all other values of <c>HandlerId</c>, this entry
 	      adds a new handler, equivalent to calling</p>
-	    <pre><seealso marker="logger:add_handler/3">
+	    <pre><seealso marker="logger#add_handler/3">
 		logger:add_handler(HandlerId, Module, HandlerConfig)
 	    </seealso></pre>
 	    <p>Multiple entries of this type are allowed.</p></item>
@@ -746,6 +748,14 @@ logger:debug(#{got => connection_request, id => Id, state => State},
 	    <p>for each <c>Module</c>.</p>
 	    <p>Multiple entries of this type are allowed.</p>
 	  </item>
+	  <tag><c>{proxy, ProxyConfig}</c></tag>
+	  <item>
+	    <p>Sets the proxy configuration, equivalent to calling</p>
+	    <pre><seealso marker="logger#set_proxy_config/1">
+		logger:set_proxy_config(ProxyConfig)
+	    </seealso></pre>
+	    <p>Only one entry of this type is allowed.</p>
+	  </item>
 	</taglist>
 	<p>See
 	  section <seealso marker="#config_examples">Configuration
@@ -791,7 +801,7 @@ logger:debug(#{got => connection_request, id => Id, state => State},
 [{kernel,
   [{logger,
     [{handler, default, logger_std_h,  % {handler, HandlerId, Module,
-      #{config => #{type => {file,"log/erlang.log"}}}}  % Config}
+      #{config => #{file => "log/erlang.log"}}}  % Config}
     ]}]}].
       </code>
       <p>Modify the default handler to print each log event as a
@@ -821,10 +831,10 @@ logger:debug(#{got => connection_request, id => Id, state => State},
   [{logger,
     [{handler, default, logger_std_h,
       #{level => error,
-        config => #{type => {file, "log/erlang.log"}}}},
+        config => #{file => "log/erlang.log"}}},
      {handler, info, logger_std_h,
       #{level => debug,
-        config => #{type => {file, "log/debug.log"}}}}
+        config => #{file => "log/debug.log"}}}
     ]}]}].
       </code>
     </section>
@@ -994,10 +1004,10 @@ ok</pre>
     <p>Then, add a new handler which prints to file. You can use the
       handler
       module <seealso marker="logger_std_h"><c>logger_std_h</c></seealso>,
-      and specify type <c>{file,File}</c>.:</p>
+      and configure it to log to file:</p>
     <pre>
-4> <input>Config = #{config => #{type => {file,"./info.log"}}, level => info}.</input>
-#{config => #{type => {file,"./info.log"}},level => info}
+4> <input>Config = #{config => #{file => "./info.log"}, level => info}.</input>
+#{config => #{file => "./info.log"},level => info}
 5> <input>logger:add_handler(myhandler, logger_std_h, Config).</input>
 ok</pre>
     <p>Since <c>filter_default</c> defaults to <c>log</c>, this
@@ -1236,7 +1246,7 @@ do_log(Fd, LogEvent, #{formatter := {FModule, FConfig}}) ->
       <p>A configuration example:</p>
       <code type="none">
 logger:add_handler(my_standard_h, logger_std_h,
-                   #{config => #{type => {file,"./system_info.log"},
+                   #{config => #{file => "./system_info.log",
                                  sync_mode_qlen => 100,
                                  drop_mode_qlen => 1000,
                                  flush_qlen => 2000}}).
@@ -1334,9 +1344,50 @@ logger:add_handler(my_disk_log_h, logger_disk_log_h,
   </section>
 
   <section>
+    <marker id="proxy"/>
+    <title>Logger Proxy</title>
+    <p>The Logger proxy is an Erlang process which is part of the
+      Kernel application's supervision tree. During startup, the proxy
+      process registers itself as the <c>system_logger</c>, meaning
+      that log events produced by the emulator are sent to this
+      process.</p>
+    <p>When a log event is issued on a process which has its group
+      leader on a remote node, Logger automatically forwards the log
+      event to the group leader's node. To achieve this, it first
+      sends the log event as an Erlang message from the original
+      client process to the proxy on the local node, and the proxy in
+      turn forwards the event to the proxy on the remote node.</p>
+    <p>When receiving a log event, either from the emulator or from a
+      remote node, the proxy calls the Logger API to log the event.</p>
+    <p>The proxy process is overload protected in the same way as
+      described in
+      section <seealso marker="#overload_protection">Protecting the
+      Handler from Overload</seealso>, but with the following default
+      values:</p>
+    <code>
+    #{sync_mode_qlen => 500,
+      drop_mode_qlen => 1000,
+      flush_qlen => 5000,
+      burst_limit_enable => false,
+      overload_kill_enable => false}</code>
+    <p>For log events from the emulator, synchronous message passing
+      mode is not applicable, since all messages are passed
+      asynchronously by the emulator. Drop mode is achieved by setting
+      the <c>system_logger</c> to <c>undefined</c>, forcing the
+      emulator to drop events until it is set back to the proxy pid
+      again.</p>
+    <p>The proxy uses <seealso marker="erts:erlang#send_nosuspend/2">
+	<c>erlang:send_nosuspend/2</c></seealso> when sending log
+      events to a remote node. If the message could not be sent
+      without suspending the sender, it is dropped. This is to avoid
+      blocking the proxy process.</p>
+  </section>
+
+  <section>
     <title>See Also</title>
     <p>
       <seealso marker="disk_log"><c>disk_log(3)</c></seealso>,
+      <seealso marker="erts:erlang"><c>erlang(3)</c></seealso>,
       <seealso marker="error_logger"><c>error_logger(3)</c></seealso>,
       <seealso marker="logger"><c>logger(3)</c></seealso>,
       <seealso marker="logger_disk_log_h"><c>logger_disk_log_h(3)</c></seealso>,
diff --git a/lib/kernel/doc/src/logger_disk_log_h.xml b/lib/kernel/doc/src/logger_disk_log_h.xml
index d9b941a0a9..aa577f3c62 100644
--- a/lib/kernel/doc/src/logger_disk_log_h.xml
+++ b/lib/kernel/doc/src/logger_disk_log_h.xml
@@ -32,7 +32,7 @@
     <rev>A</rev>
     <file>logger_disk_log_h.xml</file>
   </header>
-  <module>logger_disk_log_h</module>
+  <module since="OTP 21.0">logger_disk_log_h</module>
   <modulesummary>A disk_log based handler for Logger</modulesummary>
 
   <description>
@@ -66,7 +66,7 @@
 	corresponds to the <c>name</c> property in the
 	<seealso marker="disk_log#open-1"><c>dlog_option()</c></seealso>
 	datatype.</p>
-	<p>The value is set when the handler is added, and it can not
+	<p>The value is set when the handler is added, and it cannot
 	  be changed in runtime.</p>
 	<p>Defaults to the same name as the handler identity, in the
 	  current directory.</p>
@@ -77,7 +77,7 @@
 	corresponds to the <c>type</c> property in the
 	<seealso marker="disk_log#open-1"><c>dlog_option()</c></seealso>
 	datatype.</p>
-	<p>The value is set when the handler is added, and it can not
+	<p>The value is set when the handler is added, and it cannot
 	  be changed in runtime.</p>
 	<p>Defaults to <c>wrap</c>.</p>
       </item>
@@ -88,7 +88,7 @@
 	corresponds to the <c>MaxNoFiles</c> element in the <c>size</c> property in the
 	<seealso marker="disk_log#open-1"><c>dlog_option()</c></seealso>
 	datatype.</p>
-	<p>The value is set when the handler is added, and it can not
+	<p>The value is set when the handler is added, and it cannot
 	  be changed in runtime.</p>
 	<p>Defaults to <c>10</c>.</p>
 	<p>The setting has no effect on a halt log.</p>
@@ -101,7 +101,7 @@
 	corresponds to the <c>MaxNoBytes</c> element in the <c>size</c> property in the
 	<seealso marker="disk_log#open-1"><c>dlog_option()</c></seealso>
 	datatype.</p>
-	<p>The value is set when the handler is added, and it can not
+	<p>The value is set when the handler is added, and it cannot
 	  be changed in runtime.</p>
 	<p>Defaults to <c>1048576</c> bytes for a wrap log, and
 	<c>infinity</c> for a halt log.</p>
@@ -148,7 +148,7 @@ erl -kernel logger '[{handler,default,logger_disk_log_h,
   <funcs>
 
     <func>
-      <name name="filesync" arity="1" clause_i="1"/>
+      <name name="filesync" arity="1" clause_i="1" since="OTP 21.0"/>
       <fsummary>Writes buffered data to disk.</fsummary>
       <desc>
         <p>Write buffered data to disk.</p>
diff --git a/lib/kernel/doc/src/logger_filters.xml b/lib/kernel/doc/src/logger_filters.xml
index 90f1fcc270..0a02342864 100644
--- a/lib/kernel/doc/src/logger_filters.xml
+++ b/lib/kernel/doc/src/logger_filters.xml
@@ -32,7 +32,7 @@
     <rev>A</rev>
     <file>logger_filters.xml</file>
   </header>
-  <module>logger_filters</module>
+  <module since="OTP 21.0">logger_filters</module>
   <modulesummary>Filters to use with Logger.</modulesummary>
 
   <description>
@@ -51,7 +51,7 @@
 
   <funcs>
     <func>
-      <name name="domain" arity="2"/>
+      <name name="domain" arity="2" since="OTP 21.0"/>
       <fsummary>Filter log events based on the domain field in
 	metadata.</fsummary>
       <desc>
@@ -152,7 +152,7 @@ ok</code>
     </func>
 
     <func>
-      <name name="level" arity="2"/>
+      <name name="level" arity="2" since="OTP 21.0"/>
       <fsummary>Filter log events based on the log level.</fsummary>
       <desc>
 	  <p>This filter provides a way of filtering log events based
@@ -212,7 +212,7 @@ ok</code>
     </func>
 
     <func>
-      <name name="progress" arity="2"/>
+      <name name="progress" arity="2" since="OTP 21.0"/>
       <fsummary>Filter progress reports from supervisor and application_controller.</fsummary>
       <desc>
 	  <p>This filter matches all progress reports
@@ -227,7 +227,7 @@ ok</code>
     </func>
 
     <func>
-      <name name="remote_gl" arity="2"/>
+      <name name="remote_gl" arity="2" since="OTP 21.0"/>
       <fsummary>Filter events with group leader on remote node.</fsummary>
       <desc>
 	  <p>This filter matches all events originating from a process
diff --git a/lib/kernel/doc/src/logger_formatter.xml b/lib/kernel/doc/src/logger_formatter.xml
index d066e263df..6dc83d24e1 100644
--- a/lib/kernel/doc/src/logger_formatter.xml
+++ b/lib/kernel/doc/src/logger_formatter.xml
@@ -32,7 +32,7 @@
     <rev>A</rev>
     <file>logger_formatter.xml</file>
   </header>
-  <module>logger_formatter</module>
+  <module since="OTP 21.0">logger_formatter</module>
   <modulesummary>Default formatter for Logger.</modulesummary>
 
   <description>
@@ -289,7 +289,7 @@ exit_reason: "It crashed"</code>
 
   <funcs>
     <func>
-      <name name="check_config" arity="1"/>
+      <name name="check_config" arity="1" since="OTP 21.0"/>
       <fsummary>Validates the given formatter configuration.</fsummary>
       <desc>
 	<p>The function is called by Logger when the formatter
@@ -310,7 +310,7 @@ exit_reason: "It crashed"</code>
       </desc>
     </func>
     <func>
-      <name name="format" arity="2"/>
+      <name name="format" arity="2" since="OTP 21.0"/>
       <fsummary>Formats the given message.</fsummary>
       <desc>
 	<p>This the formatter callback function to be called from
diff --git a/lib/kernel/doc/src/logger_std_h.xml b/lib/kernel/doc/src/logger_std_h.xml
index e156f5719b..5ac4f58d12 100644
--- a/lib/kernel/doc/src/logger_std_h.xml
+++ b/lib/kernel/doc/src/logger_std_h.xml
@@ -32,7 +32,7 @@
     <rev>A</rev>
     <file>logger_std_h.xml</file>
   </header>
-  <module>logger_std_h</module>
+  <module since="OTP 21.0">logger_std_h</module>
   <modulesummary>Standard handler for Logger.</modulesummary>
 
   <description>
@@ -55,30 +55,105 @@
        is stored in a sub map with the key <c>config</c>, and can contain the
        following parameters:</p>
     <taglist>
-      <tag><marker id="type"/><c>type</c></tag>
+      <tag><marker id="type"/><c>type = standard_io | standard_error | file</c></tag>
       <item>
-	<p>This has the value <c>standard_io</c>, <c>standard_error</c>,
-	<c>{file,LogFileName}</c>, or <c>{file,LogFileName,LogFileOpts}</c>.</p>
-	<p>If <c>LogFileOpts</c> is specified, it replaces the default
-	  list of options used when opening the log file. The default
-	  list is <c>[raw,append,delayed_write]</c>. One reason to do
-	  so can be to change <c>append</c> to, for
-	  example, <c>write</c>, ensuring that the old log is
-	  truncated when a node is restarted. See the reference manual
-	  for <seealso marker="file#open-2"><c>file:open/2</c></seealso>
-	  for more information about file options.</p>
-	<p>Log files are always UTF-8 encoded. The encoding can not be
-	  changed by setting the option <c>{encoding,Encoding}</c>
-	  in <c>LogFileOpts</c>.</p>
-	<p>Notice that the standard handler does not have support for
-	  circular logging. Use the disk_log handler,
-	  <seealso marker="logger_disk_log_h"><c>logger_disk_log_h</c></seealso>,
-	  for this.</p>
-	<p>The value is set when the handler is added, and it can not
+	<p>Specifies the log destination.</p>
+	<p>The value is set when the handler is added, and it cannot
 	  be changed in runtime.</p>
-	<p>Defaults to <c>standard_io</c>.</p>
+	<p>Defaults to <c>standard_io</c>, unless
+	  parameter <seealso marker="#file"><c>file</c></seealso> is
+	  given, in which case it defaults to <c>file</c>.</p>
       </item>
-      <tag><c>filesync_repeat_interval</c></tag>
+      <tag><marker id="file"/><c>file = </c><seealso marker="file#type-filename"><c>file:filename()</c></seealso></tag>
+      <item>
+	<p>This specifies the name of the log file when the handler is
+	  of type <c>file</c>.</p>
+	<p>The value is set when the handler is added, and it cannot
+	  be changed in runtime.</p>
+	<p>Defaults to the same name as the handler identity, in the
+	  current directory.</p>
+      </item>
+      <tag><marker id="modes"/><c>modes = [</c><seealso marker="file#type-mode"><c>file:mode()</c></seealso><c>]</c></tag>
+      <item>
+	<p>This specifies the file modes to use when opening the log
+	  file,
+	  see <seealso marker="file#open-2"><c>file:open/2</c></seealso>.
+	  If <c>modes</c> are not specified, the default list used
+	  is <c>[raw,append,delayed_write]</c>. If <c>modes</c> are
+	  specified, the list replaces the default modes list with the
+	  following adjustments:</p>
+	<list>
+	  <item>
+	    If <c>raw</c> is not found in the list, it is added.
+	  </item>
+	  <item>
+	    If none of <c>write</c>, <c>append</c> or <c>exclusive</c> is
+	    found in the list, <c>append</c> is added.</item>
+	  <item>If none of <c>delayed_write</c>
+	    or <c>{delayed_write,Size,Delay}</c> is found in the
+	    list, <c>delayed_write</c> is added.</item>
+	</list>
+	<p>Log files are always UTF-8 encoded. The encoding cannot be
+	  changed by setting the mode <c>{encoding,Encoding}</c>.</p>
+	<p>The value is set when the handler is added, and it cannot
+	  be changed in runtime.</p>
+	<p>Defaults to <c>[raw,append,delayed_write]</c>.</p>
+      </item>
+      <tag><marker id="max_no_bytes"/><c>max_no_bytes = pos_integer() | infinity</c></tag>
+      <item>
+	<p>This parameter specifies if the log file should be rotated
+	  or not. The value <c>infinity</c> means the log file will
+	  grow indefinitely, while an integer value specifies at which
+	  file size (bytes) the file is rotated.</p>
+	<p>Defaults to <c>infinity</c>.</p>
+      </item>
+      <tag><marker id="max_no_files"/><c>max_no_files = non_neg_integer()</c></tag>
+      <item>
+	<p>This parameter specifies the number of rotated log file
+	  archives to keep. This has meaning only
+	  if <seealso marker="#max_no_bytes"><c>max_no_bytes</c></seealso>
+	  is set to an integer value.</p>
+	<p>The log archives are
+	  named <c>FileName.0</c>, <c>FileName.1</c>,
+	  ... <c>FileName.N</c>, where <c>FileName</c> is the name of
+	  the current log file. <c>FileName.0</c> is the newest of the
+	  archives. The maximum value for <c>N</c> is the value
+	  of <c>max_no_files</c> minus 1.</p>
+	<p>Notice that setting this value to <c>0</c> does not turn of
+	  rotation. It only specifies that no archives are kept.</p>
+	<p>Defaults to <c>0</c>.</p>
+      </item>
+      <tag><marker id="compress_on_rotate"/><c>compress_on_rotate = boolean()</c></tag>
+      <item>
+	<p>This parameter specifies if the rotated log file archives
+	  shall be compressed or not. If set to <c>true</c>, all
+	  archives are compressed with <c>gzip</c>, and renamed
+	  to <c>FileName.N.gz</c></p>
+	<p><c>compress_on_rotate</c> has no meaning if <seealso
+	marker="#max_no_bytes"><c>max_no_bytes</c></seealso> has the
+	value <c>infinity</c>.</p>
+	<p>Defaults to <c>false</c>.</p>
+      </item>
+      <tag><marker id="file_check"/><c>file_check = non_neg_integer()</c></tag>
+      <item>
+	<p>When <c>logger_std_h</c> logs to a file, it reads the file
+	  information of the log file prior to each write
+	  operation. This is to make sure the file still exists and
+	  has the same inode as when it was opened. This implies some
+	  performance loss, but ensures that no log events are lost in
+	  the case when the file has been removed or renamed by an
+	  external actor.</p>
+	<p>In order to allow minimizing the performance loss, the
+	  <c>file_check</c> parameter can be set to a positive integer
+	  value, <c>N</c>. The handler will then skip reading the file
+	  information prior to writing, as long as no more
+	  than <c>N</c> milliseconds have passed since it was last
+	  read.</p>
+	<p>Notice that the risk of loosing log events grows when
+	  the <c>file_check</c> value grows.</p>
+	<p>Defaults to 0.</p>
+      </item>
+      <tag><c>filesync_repeat_interval = pos_integer() | no_repeat</c></tag>
       <item>
 	<p>This value, in milliseconds, specifies how often the handler does
 	a file sync operation to write buffered data to disk. The handler attempts
@@ -97,12 +172,13 @@
     standard handler and the disk_log handler, and are documented in the
     <seealso marker="logger_chapter#overload_protection"><c>User's Guide</c>
     </seealso>.</p>
-    <p>Notice that if changing the configuration of the handler in runtime,
-    the <c>type</c> parameter must not be modified.</p>
+    <p>Notice that if changing the configuration of the handler in
+    runtime, the <c>type</c>, <c>file</c>, or <c>modes</c> parameters
+    must not be modified.</p>
     <p>Example of adding a standard handler:</p>
     <code type="none">
 logger:add_handler(my_standard_h, logger_std_h,
-                   #{config => #{type => {file,"./system_info.log"},
+                   #{config => #{file => "./system_info.log",
                                  filesync_repeat_interval => 1000}}).
     </code>
     <p>To set the default handler, that starts initially with
@@ -110,7 +186,7 @@ logger:add_handler(my_standard_h, logger_std_h,
     change the Kernel default logger configuration. Example:</p>
     <code type="none">
 erl -kernel logger '[{handler,default,logger_std_h,
-                      #{config => #{type => {file,"./log.log"}}}}]'
+                      #{config => #{file => "./log.log"}}}]'
     </code>
     <p>An example of how to replace the standard handler with a disk_log handler
     at startup is found in the
@@ -121,7 +197,7 @@ erl -kernel logger '[{handler,default,logger_std_h,
   <funcs>
 
     <func>
-      <name name="filesync" arity="1" clause_i="1"/>
+      <name name="filesync" arity="1" clause_i="1" since="OTP 21.0"/>
       <fsummary>Writes buffered data to disk.</fsummary>
       <desc>
         <p>Write buffered data to disk.</p>
diff --git a/lib/kernel/doc/src/net_adm.xml b/lib/kernel/doc/src/net_adm.xml
index 6957a3b5e4..c3e1619f1b 100644
--- a/lib/kernel/doc/src/net_adm.xml
+++ b/lib/kernel/doc/src/net_adm.xml
@@ -28,7 +28,7 @@
     <date>1996-09-10</date>
     <rev>A</rev>
   </header>
-  <module>net_adm</module>
+  <module since="">net_adm</module>
   <modulesummary>Various Erlang net administration routines.</modulesummary>
   <description>
     <p>This module contains various network utility functions.</p>
@@ -36,7 +36,7 @@
 
   <funcs>
     <func>
-      <name name="dns_hostname" arity="1"/>
+      <name name="dns_hostname" arity="1" since=""/>
       <fsummary>Official name of a host.</fsummary>
       <desc>
         <p>Returns the official name of <c><anno>Host</anno></c>, or
@@ -46,7 +46,7 @@
     </func>
 
     <func>
-      <name name="host_file" arity="0"/>
+      <name name="host_file" arity="0" since=""/>
       <fsummary>Read file <c>.hosts.erlang</c>.</fsummary>
       <desc>
         <p>Reads file <c>.hosts.erlang</c>, see section
@@ -58,7 +58,7 @@
     </func>
 
     <func>
-      <name name="localhost" arity="0"/>
+      <name name="localhost" arity="0" since=""/>
       <fsummary>Name of the local host.</fsummary>
       <desc>
         <p>Returns the name of the local host. If Erlang was started
@@ -68,8 +68,8 @@
     </func>
 
     <func>
-      <name name="names" arity="0"/>
-      <name name="names" arity="1"/>
+      <name name="names" arity="0" since=""/>
+      <name name="names" arity="1" since=""/>
       <fsummary>Names of Erlang nodes at a host.</fsummary>
       <desc>
         <p>Similar to <c>epmd -names</c>, see
@@ -86,7 +86,7 @@
     </func>
 
     <func>
-      <name name="ping" arity="1"/>
+      <name name="ping" arity="1" since=""/>
       <fsummary>Set up a connection to a node.</fsummary>
       <desc>
         <p>Sets up a connection to <c><anno>Node</anno></c>. Returns
@@ -95,8 +95,8 @@
     </func>
 
     <func>
-      <name name="world" arity="0"/>
-      <name name="world" arity="1"/>
+      <name name="world" arity="0" since=""/>
+      <name name="world" arity="1" since=""/>
       <fsummary>Lookup and connect to all nodes at all hosts in
         <c>.hosts.erlang</c>.</fsummary>
       <type name="verbosity"/>
@@ -117,8 +117,8 @@
     </func>
 
     <func>
-      <name name="world_list" arity="1"/>
-      <name name="world_list" arity="2"/>
+      <name name="world_list" arity="1" since=""/>
+      <name name="world_list" arity="2" since=""/>
       <fsummary>Lookup and connect to all nodes at specified hosts.</fsummary>
       <type name="verbosity"/>
       <desc>
diff --git a/lib/kernel/doc/src/net_kernel.xml b/lib/kernel/doc/src/net_kernel.xml
index bfbe7a6470..419d3cad84 100644
--- a/lib/kernel/doc/src/net_kernel.xml
+++ b/lib/kernel/doc/src/net_kernel.xml
@@ -28,7 +28,7 @@
     <date>1996-09-10</date>
     <rev>A</rev>
   </header>
-  <module>net_kernel</module>
+  <module since="">net_kernel</module>
   <modulesummary>Erlang networking kernel.</modulesummary>
   <description>
     <p>The net kernel is a system process, registered as
@@ -81,7 +81,7 @@ $ <input>erl -sname foobar</input></pre>
 
   <funcs>
     <func>
-      <name name="allow" arity="1"/>
+      <name name="allow" arity="1" since=""/>
       <fsummary>Permit access to a specified set of nodes</fsummary>
       <desc>
         <p>Permits access to the specified set of nodes.</p>
@@ -98,7 +98,7 @@ $ <input>erl -sname foobar</input></pre>
     </func>
 
     <func>
-      <name name="connect_node" arity="1"/>
+      <name name="connect_node" arity="1" since=""/>
       <fsummary>Establish a connection to a node.</fsummary>
       <desc>
         <p>Establishes a connection to <c><anno>Node</anno></c>. Returns
@@ -110,7 +110,7 @@ $ <input>erl -sname foobar</input></pre>
     </func>
 
     <func>
-      <name name="get_net_ticktime" arity="0"/>
+      <name name="get_net_ticktime" arity="0" since=""/>
       <fsummary>Get <c>net_ticktime</c>.</fsummary>
       <desc>
         <p>Gets <c>net_ticktime</c> (see
@@ -131,7 +131,7 @@ $ <input>erl -sname foobar</input></pre>
     </func>
 
     <func>
-      <name name="getopts" arity="2"/>
+      <name name="getopts" arity="2" since="OTP 19.1"/>
       <fsummary>Get distribution socket options.</fsummary>
       <desc>
         <p>Get one or more options for the distribution socket
@@ -146,8 +146,8 @@ $ <input>erl -sname foobar</input></pre>
     </func>
 
     <func>
-      <name name="monitor_nodes" arity="1"/>
-      <name name="monitor_nodes" arity="2"/>
+      <name name="monitor_nodes" arity="1" since=""/>
+      <name name="monitor_nodes" arity="2" since=""/>
       <fsummary>Subscribe to node status change messages.</fsummary>
       <desc>
         <p>The calling process subscribes or unsubscribes to node
@@ -267,8 +267,8 @@ $ <input>erl -sname foobar</input></pre>
     </func>
 
     <func>
-      <name name="set_net_ticktime" arity="1"/>
-      <name name="set_net_ticktime" arity="2"/>
+      <name name="set_net_ticktime" arity="1" since=""/>
+      <name name="set_net_ticktime" arity="2" since=""/>
       <fsummary>Set <c>net_ticktime</c>.</fsummary>
       <desc>
         <p>Sets <c>net_ticktime</c> (see
@@ -324,7 +324,7 @@ $ <input>erl -sname foobar</input></pre>
     </func>
 
     <func>
-      <name name="setopts" arity="2"/>
+      <name name="setopts" arity="2" since="OTP 19.1"/>
       <fsummary>Set distribution socket options.</fsummary>
       <desc>
         <p>Set one or more options for distribution sockets.
@@ -345,9 +345,9 @@ $ <input>erl -sname foobar</input></pre>
     </func>
 
     <func>
-      <name>start([Name]) -> {ok, pid()} | {error, Reason}</name>
-      <name>start([Name, NameType]) -> {ok, pid()} | {error, Reason}</name>
-      <name>start([Name, NameType, Ticktime]) -> {ok, pid()} | {error, Reason}</name>
+      <name since="">start([Name]) -> {ok, pid()} | {error, Reason}</name>
+      <name since="">start([Name, NameType]) -> {ok, pid()} | {error, Reason}</name>
+      <name since="">start([Name, NameType, Ticktime]) -> {ok, pid()} | {error, Reason}</name>
       <fsummary>Turn an Erlang runtime system into a distributed node.</fsummary>
       <type>
         <v>Name = atom()</v>
@@ -364,7 +364,7 @@ $ <input>erl -sname foobar</input></pre>
     </func>
 
     <func>
-      <name name="stop" arity="0"/>
+      <name name="stop" arity="0" since=""/>
       <fsummary>Turn a node into a non-distributed Erlang runtime system.</fsummary>
       <desc>
         <p>Turns a distributed node into a non-distributed node. For
diff --git a/lib/kernel/doc/src/notes.xml b/lib/kernel/doc/src/notes.xml
index 021ecfa40d..61bd598145 100644
--- a/lib/kernel/doc/src/notes.xml
+++ b/lib/kernel/doc/src/notes.xml
@@ -31,6 +31,219 @@
   </header>
   <p>This document describes the changes made to the Kernel application.</p>
 
+<section><title>Kernel 6.3.1</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p>Fixed a performance regression when reading files
+	    opened with the <c>compressed</c> flag.</p>
+          <p>
+	    Own Id: OTP-15706 Aux Id: ERIERL-336 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>Kernel 6.3</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    If for example the <c>/etc/hosts</c> did not come into
+	    existence until after the kernel application had started,
+	    its content was never read. This bug has now been
+	    corrected.</p>
+          <p>
+	    Own Id: OTP-14702 Aux Id: PR-2066 </p>
+        </item>
+        <item>
+          <p>
+	    Fix bug where doing <c>seq_trace:reset_trace()</c> while
+	    another process was doing a garbage collection could
+	    cause the run-time system to segfault.</p>
+          <p>
+	    Own Id: OTP-15490</p>
+        </item>
+        <item>
+          <p>
+	    Fix <c>erl_epmd:port_please</c> spec to include
+	    <c>atom()</c> and <c>string()</c>.</p>
+          <p>
+	    Own Id: OTP-15557 Aux Id: PR-2117 </p>
+        </item>
+        <item>
+          <p>
+	    The Logger handler logger_std_h now keeps track of the
+	    inode of its log file in order to re-open the file if the
+	    inode changes. This may happen, for instance, if the log
+	    file is opened and saved by an editor.</p>
+          <p>
+	    Own Id: OTP-15578 Aux Id: ERL-850 </p>
+        </item>
+        <item>
+          <p>
+	    When user specific file modes are given to the logger
+	    handler <c>logger_std_h</c>, they were earlier accepted
+	    without any control. This is now changes, so Logger will
+	    adjust the file modes as follows:</p>
+          <p>
+	    - If <c>raw</c> is not found in the list, it is
+	    added.<br/> - If none of <c>write</c>, <c>append</c> or
+	    <c>exclusive</c> are found in the list, <c>append</c> is
+	    added.<br/> - If none of <c>delayed_write</c> or
+	    <c>{delayed_write,Size,Delay}</c> are found in the list,
+	    <c>delayed_write</c> is added.</p>
+          <p>
+	    Own Id: OTP-15602</p>
+        </item>
+      </list>
+    </section>
+
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+          <p>
+	    The standard logger handler, <c>logger_std_h</c>, now has
+	    a new internal feature for log rotation. The rotation
+	    scheme is as follows:</p>
+          <p>
+	    The log file to which the handler currently writes always
+	    has the same name, i.e. the name which is configured for
+	    the handler. The archived files have the same name, but
+	    with extension ".N", where N is an integer. The newest
+	    archive has extension ".0", and the oldest archive has
+	    the highest number. </p>
+          <p>
+	    The size at which the log file is rotated, and the number
+	    of archive files that are kept, is specified with the
+	    handler specific configuration parameters
+	    <c>max_no_bytes</c> and <c>max_no_files</c> respectively. </p>
+          <p>
+	    Archives can be compressed, in which case they get a
+	    ".gz" file extension after the integer. Compression is
+	    specified with the handler specific configuration
+	    parameter <c>compress_on_rotate</c>.</p>
+          <p>
+	    Own Id: OTP-15479</p>
+        </item>
+        <item>
+          <p>
+	    The new functions <c>logger:i/0</c> and <c>logger:i/1</c>
+	    are added. These provide the same information as
+	    <c>logger:get_config/0</c> and other
+	    <c>logger:get_*_config</c> functions, but the information
+	    is more logically sorted and more readable.</p>
+          <p>
+	    Own Id: OTP-15600</p>
+        </item>
+        <item>
+          <p>
+	    Logger is now protected against overload due to massive
+	    amounts of log events from the emulator or from remote
+	    nodes.</p>
+          <p>
+	    Own Id: OTP-15601</p>
+        </item>
+        <item>
+          <p>
+	    Logger now uses os:system_time/1 instead of
+	    erlang:system_time/1 to generate log event timestamps.</p>
+          <p>
+	    Own Id: OTP-15625</p>
+        </item>
+        <item>
+          <p>
+	    Add functions <c>application:set_env/1,2</c> and
+	    <c>application:set_env/2</c>. These take a list of
+	    application configuration parameters, and the behaviour
+	    is equivalent to calling <c>application:set_env/4</c>
+	    individually for each application/key combination, except
+	    it is more efficient.</p>
+          <p>
+	    <c>set_env/1,2</c> warns about duplicated applications or
+	    keys. The warning is also emitted during boot, if
+	    applications or keys are duplicated within one
+	    configuration file, e.g. sys.config.</p>
+          <p>
+	    Own Id: OTP-15642 Aux Id: PR-2164 </p>
+        </item>
+        <item>
+          <p>
+	    Handler specific configuration parameters for the
+	    standard handler <c>logger_std_h</c> are changed to be
+	    more intuitive and more similar to the disk_log handler.</p>
+          <p>
+	    Earlier there was only one parameter, <c>type</c>, which
+	    could have the values <c>standard_io</c>,
+	    <c>standard_error</c>, <c>{file,FileName}</c> or
+	    <c>{file,FileName,Modes}</c>.</p>
+          <p>
+	    This is now changed, so the following parameters are
+	    allowed:</p>
+          <p>
+	    <c>type = standard_io | standard_error | file</c><br/>
+	    <c>file = file:filename()</c><br/> <c>modes =
+	    [file:mode()]</c></p>
+          <p>
+	    All parameters are optional. <c>type</c> defaults to
+	    <c>standard_io</c>, unless a file name is given, in which
+	    case it defaults to <c>file</c>. If <c>type</c> is set to
+	    <c>file</c>, the file name defaults to the same as the
+	    handler id.</p>
+          <p>
+	    The potential incompatibility is that
+	    <c>logger:get_config/0</c> and
+	    <c>logger:get_handler_config/1</c> now returns the new
+	    parameters, even if the configuration was set with the
+	    old variant, e.g. <c>#{type=>{file,FileName}}</c>.</p>
+          <p>
+	    *** POTENTIAL INCOMPATIBILITY ***</p>
+          <p>
+	    Own Id: OTP-15662</p>
+        </item>
+        <item>
+          <p>
+	    The new configuration parameter <c>file_check</c> is
+	    added to the Logger handler <c>logger_std_h</c>. This
+	    parameter specifies how long (in milliseconds) the
+	    handler may wait before checking if the log file still
+	    exists and the inode is the same as when it was opened.</p>
+          <p>
+	    The default value is 0, which means that this check is
+	    done prior to each write operation. Setting a higher
+	    number may improve performance, but adds the risk of
+	    loosing log events.</p>
+          <p>
+	    Own Id: OTP-15663</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>Kernel 6.2.1</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Setting the <c>recbuf</c> size of an inet socket the
+	    <c>buffer</c> is also automatically increased. Fix a bug
+	    where the auto adjustment of inet buffer size would be
+	    triggered even if an explicit inet buffer size had
+	    already been set.</p>
+          <p>
+	    Own Id: OTP-15651 Aux Id: ERIERL-304 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Kernel 6.2</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
diff --git a/lib/kernel/doc/src/os.xml b/lib/kernel/doc/src/os.xml
index c95e615c6b..0500e4cfb3 100644
--- a/lib/kernel/doc/src/os.xml
+++ b/lib/kernel/doc/src/os.xml
@@ -28,7 +28,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>os</module>
+  <module since="">os</module>
   <modulesummary>Operating system-specific functions.</modulesummary>
   <description>
     <p>The functions in this module are operating system-specific.
@@ -134,8 +134,8 @@
 
   <funcs>
     <func>
-      <name name="cmd" arity="1"/>
-      <name name="cmd" arity="2"/>
+      <name name="cmd" arity="1" since=""/>
+      <name name="cmd" arity="2" since="OTP 20.2.3"/>
       <fsummary>Execute a command in a shell of the target OS.</fsummary>
       <desc>
         <p>Executes <c><anno>Command</anno></c> in a command shell of the
@@ -173,8 +173,8 @@ DirOut = os:cmd("dir"), % on Win32 platform</code>
     </func>
 
     <func>
-      <name name="find_executable" arity="1"/>
-      <name name="find_executable" arity="2"/>
+      <name name="find_executable" arity="1" since=""/>
+      <name name="find_executable" arity="2" since=""/>
       <fsummary>Absolute filename of a program.</fsummary>
       <desc>
         <p>These two functions look up an executable program, with the
@@ -190,7 +190,7 @@ DirOut = os:cmd("dir"), % on Win32 platform</code>
     </func>
 
     <func>
-      <name name="getenv" arity="0"/>
+      <name name="getenv" arity="0" since=""/>
       <fsummary>List all environment variables.</fsummary>
       <desc>
         <p>Returns a list of all environment variables.
@@ -205,7 +205,7 @@ DirOut = os:cmd("dir"), % on Win32 platform</code>
     </func>
 
     <func>
-      <name name="getenv" arity="1"/>
+      <name name="getenv" arity="1" since=""/>
       <fsummary>Get the value of an environment variable.</fsummary>
       <desc>
         <p>Returns the <c><anno>Value</anno></c> of the environment variable
@@ -220,7 +220,7 @@ DirOut = os:cmd("dir"), % on Win32 platform</code>
     </func>
 
     <func>
-      <name name="getenv" arity="2"/>
+      <name name="getenv" arity="2" since="OTP 18.0"/>
       <fsummary>Get the value of an environment variable.</fsummary>
       <desc>
         <p>Returns the <c><anno>Value</anno></c> of the environment variable
@@ -235,7 +235,7 @@ DirOut = os:cmd("dir"), % on Win32 platform</code>
     </func>
 
     <func>
-      <name name="getpid" arity="0"/>
+      <name name="getpid" arity="0" since=""/>
       <fsummary>Return the process identifier of the emulator
         process.</fsummary>
       <desc>
@@ -251,7 +251,7 @@ DirOut = os:cmd("dir"), % on Win32 platform</code>
     </func>
 
     <func>
-      <name name="putenv" arity="2"/>
+      <name name="putenv" arity="2" since=""/>
       <fsummary>Set a new value for an environment variable.</fsummary>
       <desc>
         <p>Sets a new <c><anno>Value</anno></c> for environment variable
@@ -277,7 +277,7 @@ DirOut = os:cmd("dir"), % on Win32 platform</code>
     </func>
 
     <func>
-      <name name="set_signal" arity="2"/>
+      <name name="set_signal" arity="2" since="OTP 20.0"/>
       <fsummary>Enables or disables handling of OS signals.</fsummary>
       <desc>
           <p>Enables or disables OS signals.</p>
@@ -304,7 +304,7 @@ DirOut = os:cmd("dir"), % on Win32 platform</code>
     </func>
 
     <func>
-      <name name="system_time" arity="0"/>
+      <name name="system_time" arity="0" since="OTP 18.0"/>
       <fsummary>Current OS system time.</fsummary>
       <desc>
 	<p>Returns the current
@@ -317,7 +317,7 @@ DirOut = os:cmd("dir"), % on Win32 platform</code>
     </func>
 
     <func>
-      <name name="system_time" arity="1"/>
+      <name name="system_time" arity="1" since="OTP 18.0"/>
       <fsummary>Current OS system time.</fsummary>
       <desc>
 	<p>Returns the current
@@ -332,7 +332,7 @@ DirOut = os:cmd("dir"), % on Win32 platform</code>
     </func>
 
     <func>
-      <name name="timestamp" arity="0"/>
+      <name name="timestamp" arity="0" since=""/>
       <fsummary>Current OS system time on the <c>erlang:timestamp/0</c> format.</fsummary>
       <type_desc variable="Timestamp">Timestamp = {MegaSecs, Secs, MicroSecs}</type_desc>
       <desc>
@@ -373,7 +373,7 @@ calendar:now_to_universal_time(TS),
     </func>
 
     <func>
-      <name name="perf_counter" arity="0"/>
+      <name name="perf_counter" arity="0" since="OTP 19.0"/>
       <fsummary>Returns a performance counter</fsummary>
       <desc>
         <p>Returns the current performance counter value in <c>perf_counter</c>
@@ -383,7 +383,7 @@ calendar:now_to_universal_time(TS),
       </desc>
     </func>
     <func>
-      <name name="perf_counter" arity="1"/>
+      <name name="perf_counter" arity="1" since="OTP 19.0"/>
       <fsummary>Returns a performance counter</fsummary>
       <desc><p>Returns a performance counter that can be used as a very fast and
       high resolution timestamp. This counter is read directly from the hardware or operating
@@ -397,7 +397,7 @@ calendar:now_to_universal_time(TS),
       </desc>
     </func>
     <func>
-      <name name="type" arity="0"/>
+      <name name="type" arity="0" since=""/>
       <fsummary>Return the OS family and, in some cases, the OS name of the
         current OS.</fsummary>
       <desc>
@@ -417,7 +417,7 @@ calendar:now_to_universal_time(TS),
     </func>
 
     <func>
-      <name name="unsetenv" arity="1"/>
+      <name name="unsetenv" arity="1" since="OTP R16B03"/>
       <fsummary>Delete an environment variable.</fsummary>
       <desc>
 	<p>Deletes the environment variable <c><anno>VarName</anno></c>.</p>
@@ -429,7 +429,7 @@ calendar:now_to_universal_time(TS),
     </func>
 
     <func>
-      <name name="version" arity="0"/>
+      <name name="version" arity="0" since=""/>
       <fsummary>Return the OS versions.</fsummary>
       <desc>
         <p>Returns the OS version.
diff --git a/lib/kernel/doc/src/pg2.xml b/lib/kernel/doc/src/pg2.xml
index 0631b317b4..058d711756 100644
--- a/lib/kernel/doc/src/pg2.xml
+++ b/lib/kernel/doc/src/pg2.xml
@@ -32,7 +32,7 @@
     <rev>A2</rev>
     <file>pg2.xml</file>
   </header>
-  <module>pg2</module>
+  <module since="">pg2</module>
   <modulesummary>Distributed named process groups.</modulesummary>
   <description>
     <p>This module implements process groups. Each message can be sent
@@ -66,7 +66,7 @@
 
   <funcs>
     <func>
-      <name name="create" arity="1"/>
+      <name name="create" arity="1" since=""/>
       <fsummary>Create a new, empty process group.</fsummary>
       <desc>
         <p>Creates a new, empty process group. The group is globally
@@ -75,7 +75,7 @@
     </func>
 
     <func>
-      <name name="delete" arity="1"/>
+      <name name="delete" arity="1" since=""/>
       <fsummary>Delete a process group.</fsummary>
       <desc>
         <p>Deletes a process group.</p>
@@ -83,7 +83,7 @@
     </func>
 
     <func>
-      <name name="get_closest_pid" arity="1"/>
+      <name name="get_closest_pid" arity="1" since=""/>
       <fsummary>Common dispatch function.</fsummary>
       <desc>
         <p>A useful dispatch function that can be used from
@@ -93,7 +93,7 @@
     </func>
 
     <func>
-      <name name="get_local_members" arity="1"/>
+      <name name="get_local_members" arity="1" since=""/>
       <fsummary>Return all local processes in a group.</fsummary>
       <desc>
         <p>Returns all processes running on the local node in the
@@ -104,7 +104,7 @@
     </func>
 
     <func>
-      <name name="get_members" arity="1"/>
+      <name name="get_members" arity="1" since=""/>
       <fsummary>Return all processes in a group.</fsummary>
       <desc>
         <p>Returns all processes in the group <c>Name</c>. This
@@ -114,7 +114,7 @@
     </func>
 
     <func>
-      <name name="join" arity="2"/>
+      <name name="join" arity="2" since=""/>
       <fsummary>Join a process to a group.</fsummary>
       <desc>
         <p>Joins the process <c>Pid</c> to the group <c>Name</c>.
@@ -124,7 +124,7 @@
     </func>
 
     <func>
-      <name name="leave" arity="2"/>
+      <name name="leave" arity="2" since=""/>
       <fsummary>Make a process leave a group.</fsummary>
       <desc>
         <p>Makes the process <c>Pid</c> leave the group <c>Name</c>.
@@ -134,8 +134,8 @@
     </func>
 
     <func>
-      <name name="start" arity="0"/>
-      <name name="start_link" arity="0"/>
+      <name name="start" arity="0" since=""/>
+      <name name="start_link" arity="0" since=""/>
       <fsummary>Start the <c>pg2</c> server.</fsummary>
       <desc>
         <p>Starts the <c>pg2</c> server. Normally, the server does not need
@@ -149,7 +149,7 @@
     </func>
 
     <func>
-      <name name="which_groups" arity="0"/>
+      <name name="which_groups" arity="0" since=""/>
       <fsummary>Return a list of all known groups.</fsummary>
       <desc>
         <p>Returns a list of all known groups.</p>
diff --git a/lib/kernel/doc/src/rpc.xml b/lib/kernel/doc/src/rpc.xml
index fab616e630..c55454506e 100644
--- a/lib/kernel/doc/src/rpc.xml
+++ b/lib/kernel/doc/src/rpc.xml
@@ -28,7 +28,7 @@
     <date>1996-09-10</date>
     <rev>A</rev>
   </header>
-  <module>rpc</module>
+  <module since="">rpc</module>
   <modulesummary>Remote Procedure Call services.</modulesummary>
   <description>
     <p>This module contains services similar to Remote
@@ -51,7 +51,7 @@
 
   <funcs>
     <func>
-      <name name="abcast" arity="2"/>
+      <name name="abcast" arity="2" since=""/>
       <fsummary>Broadcast a message asynchronously to a registered process on
         all nodes.</fsummary>
       <desc>
@@ -61,7 +61,7 @@
     </func>
 
     <func>
-      <name name="abcast" arity="3"/>
+      <name name="abcast" arity="3" since=""/>
       <fsummary>Broadcast a message asynchronously to a registered process on
         specific nodes.</fsummary>
       <desc>
@@ -72,7 +72,7 @@
     </func>
 
     <func>
-      <name name="async_call" arity="4"/>
+      <name name="async_call" arity="4" since=""/>
       <fsummary>Evaluate a function call on a node, asynchronous
       version.</fsummary>
       <desc>
@@ -98,7 +98,7 @@
     </func>
 
     <func>
-      <name name="block_call" arity="4"/>
+      <name name="block_call" arity="4" since=""/>
       <fsummary>Evaluate a function call on a node in the RPC server's
         context.</fsummary>
       <desc>
@@ -115,7 +115,7 @@
     </func>
 
     <func>
-      <name name="block_call" arity="5"/>
+      <name name="block_call" arity="5" since=""/>
       <fsummary>Evaluate a function call on a node in the RPC server's
         context.</fsummary>
       <desc>
@@ -127,7 +127,7 @@
     </func>
 
     <func>
-      <name name="call" arity="4"/>
+      <name name="call" arity="4" since=""/>
       <fsummary>Evaluate a function call on a node.</fsummary>
       <desc>
         <p>Evaluates <c>apply(<anno>Module</anno>, <anno>Function</anno>,
@@ -138,7 +138,7 @@
     </func>
 
     <func>
-      <name name="call" arity="5"/>
+      <name name="call" arity="5" since=""/>
       <fsummary>Evaluate a function call on a node.</fsummary>
       <desc>
         <p>Evaluates <c>apply(<anno>Module</anno>, <anno>Function</anno>,
@@ -158,7 +158,7 @@
     </func>
 
     <func>
-      <name name="cast" arity="4"/>
+      <name name="cast" arity="4" since=""/>
       <fsummary>Run a function on a node ignoring the result.</fsummary>
       <desc>
         <p>Evaluates <c>apply(<anno>Module</anno>, <anno>Function</anno>,
@@ -171,7 +171,7 @@
     </func>
 
     <func>
-      <name name="eval_everywhere" arity="3"/>
+      <name name="eval_everywhere" arity="3" since=""/>
       <fsummary>Run a function on all nodes, ignoring the result.</fsummary>
       <desc>
         <p>Equivalent to <c>eval_everywhere([node()|nodes()],
@@ -181,7 +181,7 @@
     </func>
 
     <func>
-      <name name="eval_everywhere" arity="4"/>
+      <name name="eval_everywhere" arity="4" since=""/>
       <fsummary>Run a function on specific nodes, ignoring the
         result.</fsummary>
       <desc>
@@ -192,7 +192,7 @@
     </func>
 
     <func>
-      <name name="multi_server_call" arity="2"/>
+      <name name="multi_server_call" arity="2" since=""/>
       <fsummary>Interact with the servers on a number of nodes.</fsummary>
       <desc>
         <p>Equivalent to <c>multi_server_call([node()|nodes()],
@@ -201,7 +201,7 @@
     </func>
 
     <func>
-      <name name="multi_server_call" arity="3"/>
+      <name name="multi_server_call" arity="3" since=""/>
       <fsummary>Interact with the servers on a number of nodes.</fsummary>
       <desc>
         <p>Can be used when interacting with servers called
@@ -224,7 +224,7 @@
     </func>
 
     <func>
-      <name name="multicall" arity="3"/>
+      <name name="multicall" arity="3" since=""/>
       <fsummary>Evaluate a function call on a number of nodes.</fsummary>
       <desc>
         <p>Equivalent to <c>multicall([node()|nodes()], <anno>Module</anno>,
@@ -233,7 +233,7 @@
     </func>
 
     <func>
-      <name name="multicall" arity="4" clause_i="1"/>
+      <name name="multicall" arity="4" clause_i="1" since=""/>
       <fsummary>Evaluate a function call on a number of nodes.</fsummary>
       <desc>
         <p>Equivalent to <c>multicall(<anno>Nodes</anno>, <anno>Module</anno>,
@@ -242,7 +242,7 @@
     </func>
 
     <func>
-      <name name="multicall" arity="4" clause_i="2"/>
+      <name name="multicall" arity="4" clause_i="2" since=""/>
       <fsummary>Evaluate a function call on a number of nodes.</fsummary>
       <desc>
         <p>Equivalent to <c>multicall([node()|nodes()], <anno>Module</anno>,
@@ -252,7 +252,7 @@
     </func>
 
     <func>
-      <name name="multicall" arity="5"/>
+      <name name="multicall" arity="5" since=""/>
       <fsummary>Evaluate a function call on a number of nodes.</fsummary>
       <desc>
         <p>In contrast to an RPC, a multicall is an RPC that is sent
@@ -288,7 +288,7 @@
     </func>
 
     <func>
-      <name name="nb_yield" arity="1"/>
+      <name name="nb_yield" arity="1" since=""/>
       <fsummary>Deliver the result of evaluating a function call on a node
         (non-blocking).</fsummary>
       <desc>
@@ -297,7 +297,7 @@
     </func>
 
     <func>
-      <name name="nb_yield" arity="2"/>
+      <name name="nb_yield" arity="2" since=""/>
       <fsummary>Deliver the result of evaluating a function call on a node
         (non-blocking).</fsummary>
       <desc>
@@ -315,7 +315,7 @@
     </func>
 
     <func>
-      <name name="parallel_eval" arity="1"/>
+      <name name="parallel_eval" arity="1" since=""/>
       <fsummary>Evaluate many function calls on all nodes in
         parallel.</fsummary>
       <desc>
@@ -328,7 +328,7 @@
     </func>
 
     <func>
-      <name name="pinfo" arity="1"/>
+      <name name="pinfo" arity="1" since=""/>
       <fsummary>Information about a process.</fsummary>
       <desc>
         <p>Location transparent version of the BIF
@@ -337,8 +337,8 @@
     </func>
 
     <func>
-      <name name="pinfo" arity="2" clause_i="1"/>
-      <name name="pinfo" arity="2" clause_i="2"/>
+      <name name="pinfo" arity="2" clause_i="1" since=""/>
+      <name name="pinfo" arity="2" clause_i="2" since=""/>
       <fsummary>Information about a process.</fsummary>
       <desc>
         <p>Location transparent version of the BIF
@@ -347,7 +347,7 @@
     </func>
 
     <func>
-      <name name="pmap" arity="3"/>
+      <name name="pmap" arity="3" since=""/>
       <fsummary>Parallel evaluation of mapping a function over a
         list.</fsummary>
       <desc>
@@ -360,7 +360,7 @@
     </func>
 
     <func>
-      <name name="sbcast" arity="2"/>
+      <name name="sbcast" arity="2" since=""/>
       <fsummary>Broadcast a message synchronously to a registered process on
         all nodes.</fsummary>
       <desc>
@@ -370,7 +370,7 @@
     </func>
 
     <func>
-      <name name="sbcast" arity="3"/>
+      <name name="sbcast" arity="3" since=""/>
       <fsummary>Broadcast a message synchronously to a registered process on
         specific nodes.</fsummary>
       <desc>
@@ -391,7 +391,7 @@
     </func>
 
     <func>
-      <name name="server_call" arity="4"/>
+      <name name="server_call" arity="4" since=""/>
       <fsummary>Interact with a server on a node.</fsummary>
       <desc>
         <p>Can be used when interacting with a server called
@@ -410,7 +410,7 @@
     </func>
 
     <func>
-      <name name="yield" arity="1"/>
+      <name name="yield" arity="1" since=""/>
       <fsummary>Deliver the result of evaluating a function call on a node
         (blocking).</fsummary>
       <desc>
diff --git a/lib/kernel/doc/src/seq_trace.xml b/lib/kernel/doc/src/seq_trace.xml
index 1a4a74419a..aa29223dd0 100644
--- a/lib/kernel/doc/src/seq_trace.xml
+++ b/lib/kernel/doc/src/seq_trace.xml
@@ -28,7 +28,7 @@
     <date>1998-04-16</date>
     <rev>A</rev>
   </header>
-  <module>seq_trace</module>
+  <module since="">seq_trace</module>
   <modulesummary>Sequential tracing of messages.</modulesummary>
   <description>
     <p>Sequential tracing makes it possible to trace all messages
@@ -51,7 +51,7 @@
   </datatypes>
   <funcs>
     <func>
-      <name name="set_token" arity="1"/>
+      <name name="set_token" arity="1" since=""/>
       <fsummary>Set the trace token</fsummary>
       <desc>
         <p>Sets the trace token for the calling process to <c><anno>Token</anno></c>.
@@ -71,7 +71,7 @@ seq_trace:set_token(OldToken), % activate the trace token again
       </desc>
     </func>
     <func>
-      <name name="set_token" arity="2"/>
+      <name name="set_token" arity="2" since=""/>
       <fsummary>Set a component of the trace token</fsummary>
       <type name="component"/>
       <type name="flag"/>
@@ -158,7 +158,7 @@ seq_trace:set_token(OldToken), % activate the trace token again
       </desc>
     </func>
     <func>
-      <name name="get_token" arity="0"/>
+      <name name="get_token" arity="0" since=""/>
       <fsummary>Return the value of the trace token</fsummary>
       <desc>
         <p>Returns the value of the trace token for the calling process.
@@ -169,7 +169,7 @@ seq_trace:set_token(OldToken), % activate the trace token again
       </desc>
     </func>
     <func>
-      <name name="get_token" arity="1"/>
+      <name name="get_token" arity="1" since=""/>
       <fsummary>Return the value of a trace token component</fsummary>
       <type name="component"/>
       <type name="flag"/>
@@ -182,7 +182,7 @@ seq_trace:set_token(OldToken), % activate the trace token again
       </desc>
     </func>
     <func>
-      <name name="print" arity="1"/>
+      <name name="print" arity="1" since=""/>
       <fsummary>Put the Erlang term <c>TraceInfo</c>into the sequential trace output</fsummary>
       <desc>
         <p>Puts the Erlang term <c><anno>TraceInfo</anno></c> into the sequential
@@ -192,7 +192,7 @@ seq_trace:set_token(OldToken), % activate the trace token again
       </desc>
     </func>
     <func>
-      <name name="print" arity="2"/>
+      <name name="print" arity="2" since=""/>
       <fsummary>Put the Erlang term <c>TraceInfo</c>into the sequential trace output</fsummary>
       <desc>
         <p>Same as <c>print/1</c> with the additional condition that
@@ -201,7 +201,7 @@ seq_trace:set_token(OldToken), % activate the trace token again
       </desc>
     </func>
     <func>
-      <name name="reset_trace" arity="0"/>
+      <name name="reset_trace" arity="0" since=""/>
       <fsummary>Stop all sequential tracing on the local node</fsummary>
       <desc>
         <p>Sets the trace token to empty for all processes on the
@@ -213,7 +213,7 @@ seq_trace:set_token(OldToken), % activate the trace token again
       </desc>
     </func>
     <func>
-      <name name="set_system_tracer" arity="1"/>
+      <name name="set_system_tracer" arity="1" since=""/>
       <fsummary>Set the system tracer</fsummary>
       <type name="tracer"/>
       <desc>
@@ -227,7 +227,7 @@ seq_trace:set_token(OldToken), % activate the trace token again
       </desc>
     </func>
     <func>
-      <name name="get_system_tracer" arity="0"/>
+      <name name="get_system_tracer" arity="0" since=""/>
       <fsummary>Return the pid() or port() of the current system tracer.</fsummary>
       <type name="tracer"/>
       <desc>
diff --git a/lib/kernel/doc/src/wrap_log_reader.xml b/lib/kernel/doc/src/wrap_log_reader.xml
index 7fb9c1c023..5f37e7ec5f 100644
--- a/lib/kernel/doc/src/wrap_log_reader.xml
+++ b/lib/kernel/doc/src/wrap_log_reader.xml
@@ -32,7 +32,7 @@
     <rev>A</rev>
     <file>wrap_log_reader.sgml</file>
   </header>
-  <module>wrap_log_reader</module>
+  <module since="">wrap_log_reader</module>
   <modulesummary>A service to read internally formatted wrap disk logs.
   </modulesummary>
   <description>
@@ -65,8 +65,8 @@
 
   <funcs>
     <func>
-      <name name="chunk" arity="1"/>
-      <name name="chunk" arity="2"/>
+      <name name="chunk" arity="1" since=""/>
+      <name name="chunk" arity="2" since=""/>
       <fsummary>Read a chunk of objects written to a wrap log.</fsummary>
       <type name="chunk_ret"/>
       <desc>
@@ -105,7 +105,7 @@
     </func>
 
     <func>
-      <name name="close" arity="1"/>
+      <name name="close" arity="1" since=""/>
       <fsummary>Close a log.</fsummary>
       <desc>
         <p>Closes a log file properly.</p>
@@ -113,8 +113,8 @@
     </func>
 
     <func>
-      <name name="open" arity="1"/>
-      <name name="open" arity="2"/>
+      <name name="open" arity="1" since=""/>
+      <name name="open" arity="2" since=""/>
       <fsummary>Open a log file.</fsummary>
       <type name="open_ret"/>
       <desc>
diff --git a/lib/kernel/examples/gen_tcp_dist/Makefile b/lib/kernel/examples/gen_tcp_dist/Makefile
index 65513a1729..0c916835ea 100644
--- a/lib/kernel/examples/gen_tcp_dist/Makefile
+++ b/lib/kernel/examples/gen_tcp_dist/Makefile
@@ -2,9 +2,7 @@ RM=rm -f
 CP=cp
 EBIN=ebin
 ERLC=erlc
-# Works if building in open source source tree
-KERNEL_INCLUDE=$(ERL_TOP)/lib/kernel/include
-ERLCFLAGS+= -W -I$(KERNEL_INCLUDE)
+ERLCFLAGS+= -W
 
 MODULES=gen_tcp_dist
 
diff --git a/lib/kernel/examples/gen_tcp_dist/src/gen_tcp_dist.erl b/lib/kernel/examples/gen_tcp_dist/src/gen_tcp_dist.erl
index 98554ed805..cda4c470f9 100644
--- a/lib/kernel/examples/gen_tcp_dist/src/gen_tcp_dist.erl
+++ b/lib/kernel/examples/gen_tcp_dist/src/gen_tcp_dist.erl
@@ -53,10 +53,10 @@
 
 -import(error_logger,[error_msg/2]).
 
--include("net_address.hrl").
+-include_lib("kernel/include/net_address.hrl").
 
--include("dist.hrl").
--include("dist_util.hrl").
+-include_lib("kernel/include/dist.hrl").
+-include_lib("kernel/include/dist_util.hrl").
 
 %% ------------------------------------------------------------
 %%  Select this protocol based on node name
@@ -679,7 +679,14 @@ dist_cntrlr_setup_loop(Socket, TickHandler, Sup) ->
             %% From now on we execute on normal priority
             process_flag(priority, normal),
             erlang:dist_ctrl_get_data_notification(DHandle),
-            dist_cntrlr_output_loop(DHandle, Socket)
+            case init:get_argument(gen_tcp_dist_output_loop) of
+                error ->
+                    dist_cntrlr_output_loop(DHandle, Socket);
+                {ok, [[ModStr, FuncStr]]} -> % For testing...
+                    apply(list_to_atom(ModStr),
+                          list_to_atom(FuncStr),
+                          [DHandle, Socket])
+            end
     end.
 
 %% We use active 10 for good throughput while still
diff --git a/lib/kernel/include/dist.hrl b/lib/kernel/include/dist.hrl
index 003852f1b0..f06fc328d7 100644
--- a/lib/kernel/include/dist.hrl
+++ b/lib/kernel/include/dist.hrl
@@ -42,6 +42,9 @@
 -define(DFLAG_BIG_CREATION, 16#40000).
 -define(DFLAG_SEND_SENDER, 16#80000).
 -define(DFLAG_BIG_SEQTRACE_LABELS, 16#100000).
+%% -define(DFLAG_NO_MAGIC, 16#200000). %% Used internally only
+-define(DFLAG_EXIT_PAYLOAD, 16#400000).
+-define(DFLAG_FRAGMENTS, 16#800000).
 
 %% Also update dflag2str() in ../src/dist_util.erl
 %% when adding flags...
diff --git a/lib/kernel/src/Makefile b/lib/kernel/src/Makefile
index 57f17defc8..fcb599859b 100644
--- a/lib/kernel/src/Makefile
+++ b/lib/kernel/src/Makefile
@@ -118,10 +118,11 @@ MODULES = \
 	logger_h_common \
 	logger_filters \
         logger_formatter \
+	logger_olp \
+	logger_proxy \
         logger_server \
         logger_simple_h \
         logger_sup \
-	net \
 	net_adm \
 	net_kernel \
 	os \
@@ -151,7 +152,7 @@ INTERNAL_HRL_FILES= application_master.hrl disk_log.hrl \
         inet_dns.hrl inet_res.hrl \
         inet_boot.hrl inet_config.hrl inet_int.hrl \
 	inet_dns_record_adts.hrl \
-	logger_internal.hrl logger_h_common.hrl
+	logger_internal.hrl logger_olp.hrl logger_h_common.hrl
 
 ERL_FILES= $(MODULES:%=%.erl)
 
@@ -174,8 +175,10 @@ APPUP_TARGET= $(EBIN)/$(APPUP_FILE)
 
 ifeq ($(NATIVE_LIBS_ENABLED),yes)
 ERL_COMPILE_FLAGS += +native
+else
+ERL_COMPILE_FLAGS += -Werror
 endif
-ERL_COMPILE_FLAGS += -I../include -Werror
+ERL_COMPILE_FLAGS += -I../include
 
 # ----------------------------------------------------
 # Targets
@@ -279,6 +282,8 @@ $(EBIN)/logger_config.beam: logger_internal.hrl ../include/logger.hrl
 $(EBIN)/logger_disk_log_h.beam: logger_h_common.hrl logger_internal.hrl ../include/logger.hrl ../include/file.hrl
 $(EBIN)/logger_filters.beam: logger_internal.hrl ../include/logger.hrl
 $(EBIN)/logger_formatter.beam: logger_internal.hrl ../include/logger.hrl
+$(EBIN)/logger_olp.beam: logger_olp.hrl logger_internal.hrl
+$(EBIN)/logger_proxy.beam: logger_internal.hrl
 $(EBIN)/logger_server.beam: logger_internal.hrl ../include/logger.hrl
 $(EBIN)/logger_simple_h.beam: logger_internal.hrl ../include/logger.hrl
 $(EBIN)/logger_std_h.beam: logger_h_common.hrl logger_internal.hrl ../include/logger.hrl ../include/file.hrl
diff --git a/lib/kernel/src/application.erl b/lib/kernel/src/application.erl
index bc6be2f8f5..5c2e981e4b 100644
--- a/lib/kernel/src/application.erl
+++ b/lib/kernel/src/application.erl
@@ -25,7 +25,7 @@
 	 which_applications/0, which_applications/1,
 	 loaded_applications/0, permit/2]).
 -export([ensure_started/1, ensure_started/2]).
--export([set_env/3, set_env/4, unset_env/2, unset_env/3]).
+-export([set_env/1, set_env/2, set_env/3, set_env/4, unset_env/2, unset_env/3]).
 -export([get_env/1, get_env/2, get_env/3, get_all_env/0, get_all_env/1]).
 -export([get_key/1, get_key/2, get_all_key/0, get_all_key/1]).
 -export([get_application/0, get_application/1, info/0]).
@@ -279,6 +279,26 @@ loaded_applications() ->
 info() -> 
     application_controller:info().
 
+-spec set_env(Config) -> 'ok' when
+      Config :: [{Application, Env}],
+      Application :: atom(),
+      Env :: [{Par :: atom(), Val :: term()}].
+
+set_env(Config) when is_list(Config) ->
+    set_env(Config, []).
+
+-spec set_env(Config, Opts) -> 'ok' when
+      Config :: [{Application, Env}],
+      Application :: atom(),
+      Env :: [{Par :: atom(), Val :: term()}],
+      Opts :: [{timeout, timeout()} | {persistent, boolean()}].
+
+set_env(Config, Opts) when is_list(Config), is_list(Opts) ->
+    case application_controller:set_env(Config, Opts) of
+	ok -> ok;
+	{error, Msg} -> erlang:error({badarg, Msg}, [Config, Opts])
+    end.
+
 -spec set_env(Application, Par, Val) -> 'ok' when
       Application :: atom(),
       Par :: atom(),
diff --git a/lib/kernel/src/application_controller.erl b/lib/kernel/src/application_controller.erl
index a074d2e74b..7715dca7c6 100644
--- a/lib/kernel/src/application_controller.erl
+++ b/lib/kernel/src/application_controller.erl
@@ -26,7 +26,7 @@
 	 control_application/1,
 	 change_application_data/2, prep_config_change/0, config_change/1,
 	 which_applications/0, which_applications/1,
-	 loaded_applications/0, info/0,
+	 loaded_applications/0, info/0, set_env/2,
 	 get_pid_env/2, get_env/2, get_pid_all_env/1, get_all_env/1,
 	 get_pid_key/2, get_key/2, get_pid_all_key/1, get_all_key/1,
 	 get_master/1, get_application/1, get_application_module/1,
@@ -345,9 +345,6 @@ get_all_env(AppName) ->
     map(fun([Key, Val]) -> {Key, Val} end,
 	ets:match(ac_tab, {{env, AppName, '$1'}, '$2'})).
 
-
-
-
 get_pid_key(Master, Key) ->
     case ets:match(ac_tab, {{application_master, '$1'}, Master}) of
 	[[AppName]] -> get_key(AppName, Key);
@@ -461,6 +458,15 @@ permit_application(ApplName, Flag) ->
 		    {permit_application, ApplName, Flag},
 		    infinity).
 
+set_env(Config, Opts) ->
+    case check_conf_data(Config) of
+	ok ->
+	    Timeout = proplists:get_value(timeout, Opts, 5000),
+	    gen_server:call(?AC, {set_env, Config, Opts}, Timeout);
+
+	{error, _} = Error ->
+	    Error
+    end.
 
 set_env(AppName, Key, Val) ->
     gen_server:call(?AC, {set_env, AppName, Key, Val, []}).
@@ -528,19 +534,15 @@ check_conf_data([]) ->
 check_conf_data(ConfData) when is_list(ConfData) ->
     [Application | ConfDataRem] = ConfData,
     case Application of
-	{kernel, List} when is_list(List) ->
-	    case check_para_kernel(List) of
-		ok ->
-		    check_conf_data(ConfDataRem);
-		Error1 ->
-		    Error1
-	    end;
 	{AppName, List} when is_atom(AppName), is_list(List) ->
-	    case check_para(List, atom_to_list(AppName)) of
-		ok ->
-		    check_conf_data(ConfDataRem);
-		Error2 ->
-		    Error2
+	    case lists:keymember(AppName, 1, ConfDataRem) of
+		true ->
+		    {error, "duplicate application config: " ++ atom_to_list(AppName)};
+		false ->
+		    case check_para(List, AppName) of
+			ok -> check_conf_data(ConfDataRem);
+			Error -> Error
+		    end
 	    end;
 	{AppName, List} when is_list(List)  ->
 	    ErrMsg = "application: "
@@ -553,36 +555,39 @@ check_conf_data(ConfData) when is_list(ConfData) ->
 		++ "; parameters must be a list",
 	    {error, ErrMsg};
 	Else ->
-	    ErrMsg = "invalid application name: " ++ 
-		lists:flatten(io_lib:format(" ~tp",[Else])),
+	    ErrMsg = "invalid application config: "
+		++ lists:flatten(io_lib:format("~tp",[Else])),
 	    {error, ErrMsg}
     end;
 check_conf_data(_ConfData) ->
-    {error, 'configuration must be a list ended by <dot><whitespace>'}.
-    
+    {error, "configuration must be a list ended by <dot><whitespace>"}.
 
-%% Special check of distributed parameter for kernel
-check_para_kernel([]) ->
+
+check_para([], _AppName) ->
     ok;
-check_para_kernel([{distributed, Apps} | ParaList]) when is_list(Apps) ->
-    case check_distributed(Apps) of
-	{error, _ErrorMsg} = Error ->
-	    Error;
-	_ ->
-	    check_para_kernel(ParaList)
+check_para([{Para, Val} | ParaList], AppName) when is_atom(Para) ->
+    case lists:keymember(Para, 1, ParaList) of
+	true ->
+	    ErrMsg =  "application: " ++ atom_to_list(AppName)
+		++ "; duplicate parameter: " ++ atom_to_list(Para),
+	    {error, ErrMsg};
+	false ->
+	    case check_para_value(Para, Val, AppName) of
+		ok -> check_para(ParaList, AppName);
+		{error, _} = Error -> Error
+	    end
     end;
-check_para_kernel([{distributed, _Apps} | _ParaList]) ->
-    {error, "application: kernel; erroneous parameter: distributed"};
-check_para_kernel([{Para, _Val} | ParaList]) when is_atom(Para) ->
-    check_para_kernel(ParaList);
-check_para_kernel([{Para, _Val} | _ParaList]) ->
-    {error, "application: kernel; invalid parameter: " ++ 
+check_para([{Para, _Val} | _ParaList], AppName) ->
+    {error, "application: " ++ atom_to_list(AppName) ++ "; invalid parameter name: " ++
      lists:flatten(io_lib:format("~tp",[Para]))};
-check_para_kernel(Else) ->
-    {error, "application: kernel; invalid parameter list: " ++ 
+check_para([Else | _ParaList], AppName) ->
+    {error, "application: " ++ atom_to_list(AppName) ++ "; invalid parameter: " ++
      lists:flatten(io_lib:format("~tp",[Else]))}.
-    
 
+check_para_value(distributed, Apps, kernel) -> check_distributed(Apps);
+check_para_value(_Para, _Val, _AppName) -> ok.
+
+%% Special check of distributed parameter for kernel
 check_distributed([]) ->
     ok;
 check_distributed([{App, List} | Apps]) when is_atom(App), is_list(List) ->
@@ -595,18 +600,6 @@ check_distributed(_Else) ->
     {error, "application: kernel; erroneous parameter: distributed"}.
 
 
-check_para([], _AppName) ->
-    ok;
-check_para([{Para, _Val} | ParaList], AppName) when is_atom(Para) ->
-    check_para(ParaList, AppName);
-check_para([{Para, _Val} | _ParaList], AppName) ->
-    {error, "application: " ++ AppName ++ "; invalid parameter: " ++ 
-     lists:flatten(io_lib:format("~tp",[Para]))};
-check_para([Else | _ParaList], AppName) ->
-    {error, "application: " ++ AppName ++ "; invalid parameter: " ++ 
-     lists:flatten(io_lib:format("~tp",[Else]))}.
-
-
 -type calls() :: 'info' | 'prep_config_change' | 'which_applications'
                | {'config_change' | 'control_application' |
 		  'load_application' | 'start_type' | 'stop_application' |
@@ -863,6 +856,16 @@ handle_call(which_applications, _From, S) ->
 	       end, S#state.running),
     {reply, Reply, S};
 
+handle_call({set_env, Config, Opts}, _From, S) ->
+    _ = [add_env(AppName, Env) || {AppName, Env} <- Config],
+
+    case proplists:get_value(persistent, Opts, false) of
+	true ->
+	    {reply, ok, S#state{conf_data = merge_env(S#state.conf_data, Config)}};
+	false ->
+	    {reply, ok, S}
+    end;
+
 handle_call({set_env, AppName, Key, Val, Opts}, _From, S) ->
     ets:insert(ac_tab, {{env, AppName, Key}, Val}),
     case proplists:get_value(persistent, Opts, false) of
diff --git a/lib/kernel/src/code_server.erl b/lib/kernel/src/code_server.erl
index 1b4a67ecb7..68e1205301 100644
--- a/lib/kernel/src/code_server.erl
+++ b/lib/kernel/src/code_server.erl
@@ -1434,19 +1434,25 @@ all_loaded(Db) ->
 
 -spec error_msg(io:format(), [term()]) -> 'ok'.
 error_msg(Format, Args) ->
+    %% This is equal to calling logger:error/3 which we don't want to
+    %% do from code_server. We don't want to call logger:timestamp()
+    %% either.
     logger ! {log,error,Format,Args,
               #{pid=>self(),
                 gl=>group_leader(),
-                time=>erlang:system_time(microsecond),
+                time=>os:system_time(microsecond),
                 error_logger=>#{tag=>error}}},
     ok.
 
 -spec info_msg(io:format(), [term()]) -> 'ok'.
 info_msg(Format, Args) ->
+    %% This is equal to calling logger:info/3 which we don't want to
+    %% do from code_server. We don't want to call logger:timestamp()
+    %% either.
     logger ! {log,info,Format,Args,
               #{pid=>self(),
                 gl=>group_leader(),
-                time=>erlang:system_time(microsecond),
+                time=>os:system_time(microsecond),
                 error_logger=>#{tag=>info_msg}}},
     ok.
 
diff --git a/lib/kernel/src/dist_util.erl b/lib/kernel/src/dist_util.erl
index ecc022b28d..09ed31f10c 100644
--- a/lib/kernel/src/dist_util.erl
+++ b/lib/kernel/src/dist_util.erl
@@ -116,6 +116,10 @@ dflag2str(?DFLAG_SEND_SENDER) ->
     "SEND_SENDER";
 dflag2str(?DFLAG_BIG_SEQTRACE_LABELS) ->
     "BIG_SEQTRACE_LABELS";
+dflag2str(?DFLAG_EXIT_PAYLOAD) ->
+    "EXIT_PAYLOAD";
+dflag2str(?DFLAG_FRAGMENTS) ->
+    "FRAGMENTS";
 dflag2str(_) ->
     "UNKNOWN".
 
diff --git a/lib/kernel/src/erl_epmd.erl b/lib/kernel/src/erl_epmd.erl
index b7e8868911..f31a1722ce 100644
--- a/lib/kernel/src/erl_epmd.erl
+++ b/lib/kernel/src/erl_epmd.erl
@@ -33,10 +33,10 @@
 -define(erlang_daemon_port, 4369).
 -endif.
 -ifndef(epmd_dist_high).
--define(epmd_dist_high, 4370).
+-define(epmd_dist_high, 6).
 -endif.
 -ifndef(epmd_dist_low).
--define(epmd_dist_low, 4370).
+-define(epmd_dist_low, 5).
 -endif.
 
 %% External exports
@@ -77,8 +77,8 @@ stop() ->
 %%
 
 -spec port_please(Name, Host) -> {ok, Port, Version} | noport when
-	  Name :: string(),
-	  Host :: inet:ip_address(),
+	  Name :: atom() | string(),
+	  Host :: atom() | string() | inet:ip_address(),
 	  Port :: non_neg_integer(),
 	  Version :: non_neg_integer().
 
@@ -86,8 +86,8 @@ port_please(Node, Host) ->
   port_please(Node, Host, infinity).
 
 -spec port_please(Name, Host, Timeout) -> {ok, Port, Version} | noport when
-	  Name :: string(),
-	  Host :: inet:ip_address(),
+	  Name :: atom() | string(),
+	  Host :: atom() | string() | inet:ip_address(),
 	  Timeout :: non_neg_integer() | infinity,
 	  Port :: non_neg_integer(),
 	  Version :: non_neg_integer().
@@ -342,6 +342,13 @@ wait_for_reg_reply(Socket, SoFar) ->
     receive
 	{tcp, Socket, Data0} ->
 	    case SoFar ++ Data0 of
+		[$v, Result, A, B, C, D] ->
+		    case Result of
+			0 ->
+			    {alive, Socket, ?u32(A, B, C, D)};
+			_ ->
+			    {error, duplicate_name}
+		    end;
 		[$y, Result, A, B] ->
 		    case Result of
 			0 ->
diff --git a/lib/kernel/src/erts_debug.erl b/lib/kernel/src/erts_debug.erl
index 1270de4144..c4d276f9e8 100644
--- a/lib/kernel/src/erts_debug.erl
+++ b/lib/kernel/src/erts_debug.erl
@@ -36,7 +36,8 @@
          map_info/1, same/2, set_internal_state/2,
          size_shared/1, copy_shared/1, dirty_cpu/2, dirty_io/2, dirty/3,
          lcnt_control/1, lcnt_control/2, lcnt_collect/0, lcnt_clear/0,
-         lc_graph/0, lc_graph_to_dot/2, lc_graph_merge/2]).
+         lc_graph/0, lc_graph_to_dot/2, lc_graph_merge/2,
+         alloc_blocks_size/1]).
 
 -spec breakpoint(MFA, Flag) -> non_neg_integer() when
       MFA :: {Module :: module(),
@@ -495,3 +496,58 @@ lcg_print_locks(Out, [LastLock]) ->
 lcg_print_locks(Out, [Lock | Rest]) ->
     io:format(Out, "~w,\n", [Lock]),
     lcg_print_locks(Out, Rest).
+
+
+%% Returns the amount of memory allocated by the given allocator type.
+-spec alloc_blocks_size(Type) -> non_neg_integer() | undefined when
+      Type :: atom().
+
+alloc_blocks_size(Type) ->
+    Allocs = erlang:system_info(alloc_util_allocators),
+    Sizes = erlang:system_info({allocator_sizes, Allocs}),
+    alloc_blocks_size_1(Sizes, Type, 0).
+
+alloc_blocks_size_1([], _Type, 0) ->
+    undefined;
+alloc_blocks_size_1([{_Type, false} | Rest], Type, Acc) ->
+    alloc_blocks_size_1(Rest, Type, Acc);
+alloc_blocks_size_1([{Type, Instances} | Rest], Type, Acc0) ->
+    F = fun ({instance, _, L}, Acc) ->
+                MBCSPool = case lists:keyfind(mbcs_pool, 1, L) of
+                               {_, Pool} -> Pool;
+                               false -> []
+                           end,
+                {_,MBCS} = lists:keyfind(mbcs, 1, L),
+                {_,SBCS} = lists:keyfind(sbcs, 1, L),
+                Acc +
+                    sum_block_sizes(MBCSPool) +
+                    sum_block_sizes(MBCS) +
+                    sum_block_sizes(SBCS)
+        end,
+    alloc_blocks_size_1(Rest, Type, lists:foldl(F, Acc0, Instances));
+alloc_blocks_size_1([{_Type, Instances} | Rest], Type, Acc0) ->
+    F = fun ({instance, _, L}, Acc) ->
+                Acc + sum_foreign_sizes(Type, L)
+        end,
+    alloc_blocks_size_1(Rest, Type, lists:foldl(F, Acc0, Instances));
+alloc_blocks_size_1([], _Type, Acc) ->
+    Acc.
+
+sum_foreign_sizes(Type, L) ->
+    case lists:keyfind(mbcs_pool, 1, L) of
+        {_,Pool} ->
+            {_,ForeignBlocks} = lists:keyfind(foreign_blocks, 1, Pool),
+            case lists:keyfind(Type, 1, ForeignBlocks) of
+                {_,TypeSizes} -> sum_block_sizes(TypeSizes);
+                false -> 0
+            end;
+        _ ->
+            0
+    end.
+
+sum_block_sizes(Blocks) ->
+    lists:foldl(
+      fun({blocks_size, Sz,_,_}, Sz0) -> Sz0+Sz;
+         ({blocks_size, Sz}, Sz0) -> Sz0+Sz;
+         (_, Sz) -> Sz
+      end, 0, Blocks).
diff --git a/lib/kernel/src/gen_tcp.erl b/lib/kernel/src/gen_tcp.erl
index 7f7833ec23..5d4764f8ff 100644
--- a/lib/kernel/src/gen_tcp.erl
+++ b/lib/kernel/src/gen_tcp.erl
@@ -156,7 +156,7 @@ connect(Address, Port, Opts) ->
       Options :: [connect_option()],
       Timeout :: timeout(),
       Socket :: socket(),
-      Reason :: inet:posix().
+      Reason :: timeout | inet:posix().
 
 connect(Address, Port, Opts, Time) ->
     Timer = inet:start_timer(Time),
@@ -220,7 +220,7 @@ listen(Port, Opts0) ->
 -spec accept(ListenSocket) -> {ok, Socket} | {error, Reason} when
       ListenSocket :: socket(),
       Socket :: socket(),
-      Reason :: closed | timeout | system_limit | inet:posix().
+      Reason :: closed | system_limit | inet:posix().
 
 accept(S) ->
     case inet_db:lookup_socket(S) of
@@ -312,7 +312,7 @@ recv(S, Length) when is_port(S) ->
       Length :: non_neg_integer(),
       Timeout :: timeout(),
       Packet :: string() | binary() | HttpPacket,
-      Reason :: closed | inet:posix(),
+      Reason :: closed | timeout | inet:posix(),
       HttpPacket :: term().
 
 recv(S, Length, Time) when is_port(S) ->
diff --git a/lib/kernel/src/gen_udp.erl b/lib/kernel/src/gen_udp.erl
index d6e8652e77..fad7b2f887 100644
--- a/lib/kernel/src/gen_udp.erl
+++ b/lib/kernel/src/gen_udp.erl
@@ -95,7 +95,7 @@
 -spec open(Port) -> {ok, Socket} | {error, Reason} when
       Port :: inet:port_number(),
       Socket :: socket(),
-      Reason :: inet:posix().
+      Reason :: system_limit | inet:posix().
 
 open(Port) -> 
     open(Port, []).
@@ -112,7 +112,7 @@ open(Port) ->
               | {bind_to_device, binary()}
               | option(),
       Socket :: socket(),
-      Reason :: inet:posix().
+      Reason :: system_limit | inet:posix().
 
 open(Port, Opts0) ->
     {Mod, Opts} = inet:udp_module(Opts0),
@@ -186,7 +186,7 @@ recv(S,Len) when is_port(S), is_integer(Len) ->
       Port :: inet:port_number(),
       AncData :: inet:ancillary_data(),
       Packet :: string() | binary(),
-      Reason :: not_owner | inet:posix().
+      Reason :: not_owner | timeout | inet:posix().
 
 recv(S,Len,Time) when is_port(S) ->
     case inet_db:lookup_socket(S) of
diff --git a/lib/kernel/src/global.erl b/lib/kernel/src/global.erl
index a38522eb5c..3875074d74 100644
--- a/lib/kernel/src/global.erl
+++ b/lib/kernel/src/global.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 1996-2017. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2019. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -50,10 +50,9 @@
 %% This is for backward compatibility only; the functionality is broken.
 -define(WARN_DUPLICATED_NAME, global_multi_name_action).
 
-%% Undocumented Kernel variable. Set this to 0 (zero) to get the old
-%% behaviour.
+%% Undocumented Kernel variable.
 -define(N_CONNECT_RETRIES, global_connect_retries).
--define(DEFAULT_N_CONNECT_RETRIES, 5).
+-define(DEFAULT_N_CONNECT_RETRIES, 0).
 
 %%% In certain places in the server, calling io:format hangs everything,
 %%% so we'd better use erlang:display/1.
@@ -125,16 +124,12 @@
 %%% There are also ETS tables used for bookkeeping of locks and names
 %%% (the first position is the key):
 %%%
-%%% global_locks (set): {ResourceId, LockRequesterId, [{Pid,RPid,ref()]}
+%%% global_locks (set): {ResourceId, LockRequesterId, [{Pid,ref()]}
 %%%   Pid is locking ResourceId, ref() is the monitor ref.
-%%%   RPid =/= Pid if there is an extra process calling erlang:monitor().
-%%% global_names (set):  {Name, Pid, Method, RPid, ref()}
+%%% global_names (set):  {Name, Pid, Method, ref()}
 %%%   Registered names. ref() is the monitor ref.
-%%%   RPid =/= Pid if there is an extra process calling erlang:monitor().
 %%% global_names_ext (set): {Name, Pid, RegNode}
 %%%   External registered names (C-nodes).
-%%%   (The RPid:s can be removed when/if erlang:monitor() returns before 
-%%%    trying to connect to the other node.)
 %%% 
 %%% Helper tables:
 %%% global_pid_names (bag): {Pid, Name} | {ref(), Name}
@@ -310,7 +305,7 @@ re_register_name(Name, Pid, Method0) when is_pid(Pid) ->
 -spec registered_names() -> [Name] when
       Name :: term().
 registered_names() ->
-    MS = ets:fun2ms(fun({Name,_Pid,_M,_RP,_R}) -> Name end),
+    MS = ets:fun2ms(fun({Name,_Pid,_M,_R}) -> Name end),
     ets:select(global_names, MS).
 
 %%-----------------------------------------------------------------
@@ -1235,7 +1230,7 @@ ins_name_ext(Name, Pid, Method, RegNode, FromPidOrNode, ExtraInfo, S0) ->
 
 where(Name) ->
     case ets:lookup(global_names, Name) of
-	[{_Name, Pid, _Method, _RPid, _Ref}] ->
+	[{_Name, Pid, _Method, _Ref}] ->
 	    if node(Pid) == node() ->
 		    case is_process_alive(Pid) of
 			true  -> Pid;
@@ -1272,10 +1267,10 @@ can_set_lock({ResourceId, LockRequesterId}) ->
     end.
 
 insert_lock({ResourceId, LockRequesterId}=Id, Pid, PidRefs, S) ->
-    {RPid, Ref} = do_monitor(Pid),
+    Ref = erlang:monitor(process, Pid),
     true = ets:insert(global_pid_ids, {Pid, ResourceId}),
     true = ets:insert(global_pid_ids, {Ref, ResourceId}),
-    Lock = {ResourceId, LockRequesterId, [{Pid,RPid,Ref} | PidRefs]},
+    Lock = {ResourceId, LockRequesterId, [{Pid,Ref} | PidRefs]},
     true = ets:insert(global_locks, Lock),
     trace_message(S, {ins_lock, node(Pid)}, [Id, Pid]).
 
@@ -1293,10 +1288,9 @@ handle_del_lock({ResourceId, LockReqId}, Pid, S0) ->
 	_ -> S0
     end.
 
-remove_lock(ResourceId, LockRequesterId, Pid, [{Pid,RPid,Ref}], Down, S0) ->
+remove_lock(ResourceId, LockRequesterId, Pid, [{Pid,Ref}], Down, S0) ->
     ?trace({remove_lock_1, {id,ResourceId},{pid,Pid}}),
     true = erlang:demonitor(Ref, [flush]),
-    kill_monitor_proc(RPid, Pid),
     true = ets:delete(global_locks, ResourceId),
     true = ets:delete_object(global_pid_ids, {Pid, ResourceId}),
     true = ets:delete_object(global_pid_ids, {Ref, ResourceId}),
@@ -1309,9 +1303,8 @@ remove_lock(ResourceId, LockRequesterId, Pid, [{Pid,RPid,Ref}], Down, S0) ->
 remove_lock(ResourceId, LockRequesterId, Pid, PidRefs0, _Down, S) ->
     ?trace({remove_lock_2, {id,ResourceId},{pid,Pid}}),
     PidRefs = case lists:keyfind(Pid, 1, PidRefs0) of
-                  {Pid, RPid, Ref} ->
+                  {Pid, Ref} ->
                       true = erlang:demonitor(Ref, [flush]),
-                      kill_monitor_proc(RPid, Pid),
                       true = ets:delete_object(global_pid_ids, 
                                                {Ref, ResourceId}),
                       lists:keydelete(Pid, 1, PidRefs0);
@@ -1324,11 +1317,6 @@ remove_lock(ResourceId, LockRequesterId, Pid, PidRefs0, _Down, S) ->
     trace_message(S, {rem_lock, node(Pid)}, 
                   [{ResourceId, LockRequesterId}, Pid]).
 
-kill_monitor_proc(Pid, Pid) ->
-    ok;
-kill_monitor_proc(RPid, _Pid) ->
-    exit(RPid, kill).
-
 do_ops(Ops, ConnNode, Names_ext, ExtraInfo, S0) ->
     ?trace({do_ops, {ops,Ops}}),
 
@@ -1394,8 +1382,8 @@ sync_other(Node, N) ->
     % exit(normal).
 
 insert_global_name(Name, Pid, Method, FromPidOrNode, ExtraInfo, S) ->
-    {RPid, Ref} = do_monitor(Pid),
-    true = ets:insert(global_names, {Name, Pid, Method, RPid, Ref}),
+    Ref = erlang:monitor(process, Pid),
+    true = ets:insert(global_names, {Name, Pid, Method, Ref}),
     true = ets:insert(global_pid_names, {Pid, Name}),
     true = ets:insert(global_pid_names, {Ref, Name}),
     case lock_still_set(FromPidOrNode, ExtraInfo, S) of
@@ -1437,7 +1425,7 @@ extra_info(Tag, ExtraInfo) ->
 del_name(Ref, S) ->
     NameL = [Name || 
                 {_, Name} <- ets:lookup(global_pid_names, Ref),
-                {_, _Pid, _Method, _RPid, Ref1} <- 
+                {_, _Pid, _Method, Ref1} <-
                     ets:lookup(global_names, Name),
                 Ref1 =:= Ref],
     case NameL of
@@ -1450,24 +1438,23 @@ del_name(Ref, S) ->
 %% Keeps the entry in global_names for whereis_name/1.
 delete_global_name_keep_pid(Name, S) ->
     case ets:lookup(global_names, Name) of
-        [{Name, Pid, _Method, RPid, Ref}] ->
-            delete_global_name2(Name, Pid, RPid, Ref, S);
+        [{Name, Pid, _Method, Ref}] ->
+            delete_global_name2(Name, Pid, Ref, S);
         [] ->
             S
     end.
 
 delete_global_name2(Name, S) ->
     case ets:lookup(global_names, Name) of
-        [{Name, Pid, _Method, RPid, Ref}] ->
+        [{Name, Pid, _Method, Ref}] ->
             true = ets:delete(global_names, Name),
-            delete_global_name2(Name, Pid, RPid, Ref, S);
+            delete_global_name2(Name, Pid, Ref, S);
         [] ->
             S
     end.
 
-delete_global_name2(Name, Pid, RPid, Ref, S) ->
+delete_global_name2(Name, Pid, Ref, S) ->
     true = erlang:demonitor(Ref, [flush]),
-    kill_monitor_proc(RPid, Pid),
     delete_global_name(Name, Pid),
     ?trace({delete_global_name,{item,Name},{pid,Pid}}),
     true = ets:delete_object(global_pid_names, {Pid, Name}),
@@ -1929,9 +1916,9 @@ reset_node_state(Node) ->
 %% from the same partition.
 exchange_names([{Name, Pid, Method} | Tail], Node, Ops, Res) ->
     case ets:lookup(global_names, Name) of
-	[{Name, Pid, _Method, _RPid2, _Ref2}] ->
+	[{Name, Pid, _Method, _Ref2}] ->
 	    exchange_names(Tail, Node, Ops, Res);
-	[{Name, Pid2, Method2, _RPid2, _Ref2}] when node() < Node ->
+	[{Name, Pid2, Method2, _Ref2}] when node() < Node ->
 	    %% Name clash!  Add the result of resolving to Res(olved).
 	    %% We know that node(Pid) =/= node(), so we don't
 	    %% need to link/unlink to Pid.
@@ -1960,7 +1947,7 @@ exchange_names([{Name, Pid, Method} | Tail], Node, Ops, Res) ->
 		    Op = {delete, Name},
 		    exchange_names(Tail, Node, [Op | Ops], [Op | Res])
 	    end;
-	[{Name, _Pid2, _Method, _RPid, _Ref}] ->
+	[{Name, _Pid2, _Method, _Ref}] ->
 	    %% The other node will solve the conflict.
 	    exchange_names(Tail, Node, Ops, Res);
 	_ ->
@@ -2036,7 +2023,7 @@ pid_is_locking(Pid, PidRefs) ->
 delete_lock(Ref, S0) ->
     Locks = pid_locks(Ref),
     F = fun({ResourceId, LockRequesterId, PidRefs}, S) -> 
-                {Pid, _RPid, Ref} = lists:keyfind(Ref, 3, PidRefs),
+                {Pid, Ref} = lists:keyfind(Ref, 2, PidRefs),
                 remove_lock(ResourceId, LockRequesterId, Pid, PidRefs, true, S)
         end,
     lists:foldl(F, S0, Locks).
@@ -2046,10 +2033,10 @@ pid_locks(Ref) ->
                               ets:lookup(global_locks, ResourceId)
                       end, ets:lookup(global_pid_ids, Ref)),
     [Lock || Lock = {_Id, _Req, PidRefs} <- L, 
-             rpid_is_locking(Ref, PidRefs)].
+             ref_is_locking(Ref, PidRefs)].
 
-rpid_is_locking(Ref, PidRefs) ->
-    lists:keyfind(Ref, 3, PidRefs) =/= false.
+ref_is_locking(Ref, PidRefs) ->
+    lists:keyfind(Ref, 2, PidRefs) =/= false.
 
 handle_nodedown(Node, S) ->
     %% DOWN signals from monitors have removed locks and registered names.
@@ -2062,7 +2049,7 @@ handle_nodedown(Node, S) ->
 
 get_names() ->
     ets:select(global_names, 
-               ets:fun2ms(fun({Name, Pid, Method, _RPid, _Ref}) -> 
+               ets:fun2ms(fun({Name, Pid, Method, _Ref}) ->
                                   {Name, Pid, Method} 
                           end)).
 
@@ -2205,24 +2192,6 @@ unexpected_message(Message, What) ->
 
 %%% Utilities
 
-%% When/if erlang:monitor() returns before trying to connect to the
-%% other node this function can be removed.
-do_monitor(Pid) ->
-    case (node(Pid) =:= node()) orelse lists:member(node(Pid), nodes()) of
-        true ->
-            %% Assume the node is still up
-            {Pid, erlang:monitor(process, Pid)};
-        false ->
-            F = fun() -> 
-                        Ref = erlang:monitor(process, Pid),
-                        receive 
-                            {'DOWN', Ref, process, Pid, _Info} ->
-                                exit(normal)
-                        end
-                end,
-            erlang:spawn_monitor(F)
-    end.
-
 intersection(_, []) -> 
     [];
 intersection(L1, L2) ->
diff --git a/lib/kernel/src/inet_config.erl b/lib/kernel/src/inet_config.erl
index 9f76360b8b..e771461b65 100644
--- a/lib/kernel/src/inet_config.erl
+++ b/lib/kernel/src/inet_config.erl
@@ -98,7 +98,7 @@ init() ->
 			      {win32,WinType} ->
 				  win32_load_from_registry(WinType);
 			      _ ->
-				  error("can not read win32 system registry~n", [])
+				  error("cannot read win32 system registry~n", [])
 			  end
 		  end, CfgFiles),
 
diff --git a/lib/kernel/src/inet_db.erl b/lib/kernel/src/inet_db.erl
index 6cbb6ac2da..3f5a2ea5ee 100644
--- a/lib/kernel/src/inet_db.erl
+++ b/lib/kernel/src/inet_db.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 1997-2016. All Rights Reserved.
+%% Copyright Ericsson AB 1997-2019. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -1223,7 +1223,10 @@ handle_set_file(Option, Fname, TagTm, TagInfo, ParseFun, From,
 			    {ok, B, _} -> B;
 			    _ -> <<>>
 			end;
-		    _ -> <<>>
+		    _ ->
+                        ets:insert(Db, {TagInfo, undefined}),
+                        TimeZero = - (?RES_FILE_UPDATE_TM + 1), % Early enough
+                        ets:insert(Db, {TagTm, TimeZero})
 		end,
 	    handle_set_file(ParseFun, Bin, From, State);
 	false -> {reply,error,State}
diff --git a/lib/kernel/src/inet_dns.erl b/lib/kernel/src/inet_dns.erl
index f1f58bc872..6c98d2aab7 100644
--- a/lib/kernel/src/inet_dns.erl
+++ b/lib/kernel/src/inet_dns.erl
@@ -699,7 +699,7 @@ encode_labels(Bin, Comp0, Pos, [L|Ls]=Labels)
 	none ->
 	    Comp = if Pos < (3 bsl 14) ->
 			   %% Just in case - compression
-			   %% pointers can not reach further
+			   %% pointers cannot reach further
 			   gb_trees:insert(Labels, Pos, Comp0);
 		      true -> Comp0
 		   end,
diff --git a/lib/kernel/src/inet_tcp_dist.erl b/lib/kernel/src/inet_tcp_dist.erl
index c37212b0f9..c5a114a9ef 100644
--- a/lib/kernel/src/inet_tcp_dist.erl
+++ b/lib/kernel/src/inet_tcp_dist.erl
@@ -212,6 +212,7 @@ do_accept(Driver, Kernel, AcceptPid, Socket, MyNode, Allowed, SetupTime) ->
 					   [{active, true},
 					    {deliver, port},
 					    {packet, 4},
+                                            binary,
 					    nodelay()])
 		      end,
 		      f_getll = fun(S) ->
diff --git a/lib/kernel/src/kernel.app.src b/lib/kernel/src/kernel.app.src
index fe073621c8..8fe6bdd1ca 100644
--- a/lib/kernel/src/kernel.app.src
+++ b/lib/kernel/src/kernel.app.src
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1996-2018. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2019. All Rights Reserved.
 %% 
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -68,11 +68,12 @@
              logger_formatter,
              logger_h_common,
              logger_handler_watcher,
+             logger_olp,
+             logger_proxy,
              logger_server,
              logger_simple_h,
              logger_std_h,
              logger_sup,
-	     net,
 	     net_adm,
 	     net_kernel,
 	     os,
@@ -146,6 +147,6 @@
          {logger_sasl_compatible, false}
         ]},
   {mod, {kernel, []}},
-  {runtime_dependencies, ["erts-10.1", "stdlib-3.5", "sasl-3.0"]}
+  {runtime_dependencies, ["erts-10.2.5", "stdlib-3.5", "sasl-3.0"]}
  ]
 }.
diff --git a/lib/kernel/src/kernel.appup.src b/lib/kernel/src/kernel.appup.src
index ccf0a82ced..aca3247c8f 100644
--- a/lib/kernel/src/kernel.appup.src
+++ b/lib/kernel/src/kernel.appup.src
@@ -40,7 +40,12 @@
   {<<"^6\\.0\\.1(?:\\.[0-9]+)*$">>,[restart_new_emulator]},
   {<<"^6\\.1$">>,[restart_new_emulator]},
   {<<"^6\\.1\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]},
-  {<<"^6\\.1\\.1(?:\\.[0-9]+)*$">>,[restart_new_emulator]}],
+  {<<"^6\\.1\\.1(?:\\.[0-9]+)*$">>,[restart_new_emulator]},
+  {<<"^6\\.2$">>,[restart_new_emulator]},
+  {<<"^6\\.2\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]},
+  {<<"^6\\.2\\.1(?:\\.[0-9]+)*$">>,[restart_new_emulator]},
+  {<<"^6\\.3$">>,[restart_new_emulator]},
+  {<<"^6\\.3\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]}],
  [{<<"^5\\.3$">>,[restart_new_emulator]},
   {<<"^5\\.3\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]},
   {<<"^5\\.3\\.1(?:\\.[0-9]+)*$">>,[restart_new_emulator]},
@@ -54,4 +59,9 @@
   {<<"^6\\.0\\.1(?:\\.[0-9]+)*$">>,[restart_new_emulator]},
   {<<"^6\\.1$">>,[restart_new_emulator]},
   {<<"^6\\.1\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]},
-  {<<"^6\\.1\\.1(?:\\.[0-9]+)*$">>,[restart_new_emulator]}]}.
+  {<<"^6\\.1\\.1(?:\\.[0-9]+)*$">>,[restart_new_emulator]},
+  {<<"^6\\.2$">>,[restart_new_emulator]},
+  {<<"^6\\.2\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]},
+  {<<"^6\\.2\\.1(?:\\.[0-9]+)*$">>,[restart_new_emulator]},
+  {<<"^6\\.3$">>,[restart_new_emulator]},
+  {<<"^6\\.3\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]}]}.
diff --git a/lib/kernel/src/kernel.erl b/lib/kernel/src/kernel.erl
index c68d04e279..111d103df2 100644
--- a/lib/kernel/src/kernel.erl
+++ b/lib/kernel/src/kernel.erl
@@ -145,26 +145,11 @@ init([]) ->
             {ok, {SupFlags,
                   [Code, File, StdError, User, LoggerSup, Config, RefC, SafeSup]}};
         _ ->
-            Rpc = #{id => rex,
-                    start => {rpc, start_link, []},
-                    restart => permanent,
-                    shutdown => 2000,
-                    type => worker,
-                    modules => [rpc]},
-
-            Global = #{id => global_name_server,
-                       start => {global, start_link, []},
-                       restart => permanent,
-                       shutdown => 2000,
-                       type => worker,
-                       modules => [global]},
-
-            GlGroup = #{id => global_group,
-                        start => {global_group,start_link,[]},
-                        restart => permanent,
-                        shutdown => 2000,
-                        type => worker,
-                        modules => [global_group]},
+            DistChildren =
+		case application:get_env(kernel, start_distribution) of
+		    {ok, false} -> [];
+		    _ -> start_distribution()
+		end,
 
             InetDb = #{id => inet_db,
                        start => {inet_db, start_link, []},
@@ -173,13 +158,6 @@ init([]) ->
                        type => worker,
                        modules => [inet_db]},
 
-            NetSup = #{id => net_sup,
-                       start => {erl_distribution, start_link, []},
-                       restart => permanent,
-                       shutdown => infinity,
-                       type => supervisor,
-                       modules => [erl_distribution]},
-
             SigSrv = #{id => erl_signal_server,
                        start => {gen_event, start_link, [{local, erl_signal_server}]},
                        restart => permanent,
@@ -187,14 +165,11 @@ init([]) ->
                        type => worker,
                        modules => dynamic},
 
-            DistAC = start_dist_ac(),
-
             Timer = start_timer(),
 
             {ok, {SupFlags,
-                  [Code, Rpc, Global, InetDb | DistAC] ++
-                  [NetSup, GlGroup, File, SigSrv,
-                   StdError, User, Config, RefC, SafeSup, LoggerSup] ++ Timer}}
+                  [Code, InetDb | DistChildren] ++
+                  [File, SigSrv, StdError, User, Config, RefC, SafeSup, LoggerSup] ++ Timer}}
     end;
 init(safe) ->
     SupFlags = #{strategy => one_for_one,
@@ -213,6 +188,39 @@ init(safe) ->
 
     {ok, {SupFlags, Boot ++ DiskLog ++ Pg2}}.
 
+start_distribution() ->
+    Rpc = #{id => rex,
+            start => {rpc, start_link, []},
+            restart => permanent,
+            shutdown => 2000,
+            type => worker,
+            modules => [rpc]},
+
+    Global = #{id => global_name_server,
+               start => {global, start_link, []},
+               restart => permanent,
+               shutdown => 2000,
+               type => worker,
+               modules => [global]},
+
+    DistAC = start_dist_ac(),
+
+    NetSup = #{id => net_sup,
+               start => {erl_distribution, start_link, []},
+               restart => permanent,
+               shutdown => infinity,
+               type => supervisor,
+               modules => [erl_distribution]},
+
+    GlGroup = #{id => global_group,
+                start => {global_group,start_link,[]},
+                restart => permanent,
+                shutdown => 2000,
+                type => worker,
+                modules => [global_group]},
+
+    [Rpc, Global | DistAC] ++ [NetSup, GlGroup].
+
 start_dist_ac() ->
     Spec = [#{id => dist_ac,
               start => {dist_ac,start_link,[]},
diff --git a/lib/kernel/src/logger.erl b/lib/kernel/src/logger.erl
index 6762998d4f..38bd2f481c 100644
--- a/lib/kernel/src/logger.erl
+++ b/lib/kernel/src/logger.erl
@@ -43,11 +43,14 @@
          get_module_level/0, get_module_level/1,
          set_primary_config/1, set_primary_config/2,
          set_handler_config/2, set_handler_config/3,
+         set_proxy_config/1,
          update_primary_config/1,
          update_handler_config/2, update_handler_config/3,
+         update_proxy_config/1,
          update_formatter_config/2, update_formatter_config/3,
          get_primary_config/0, get_handler_config/1,
          get_handler_config/0, get_handler_ids/0, get_config/0,
+         get_proxy_config/0,
          add_handlers/1]).
 
 %% Private configuration
@@ -57,6 +60,8 @@
 -export([compare_levels/2]).
 -export([set_process_metadata/1, update_process_metadata/1,
          unset_process_metadata/0, get_process_metadata/0]).
+-export([i/0, i/1]).
+-export([timestamp/0]).
 
 %% Basic report formatting
 -export([format_report/1, format_otp_report/1]).
@@ -122,6 +127,18 @@
                           {filters,log | stop,[{filter_id(),filter()}]} |
                           {module_level,level(),[module()]}].
 
+-type olp_config() :: #{sync_mode_qlen => non_neg_integer(),
+                        drop_mode_qlen => pos_integer(),
+                        flush_qlen => pos_integer(),
+                        burst_limit_enable => boolean(),
+                        burst_limit_max_count => pos_integer(),
+                        burst_limit_window_time => pos_integer(),
+                        overload_kill_enable => boolean(),
+                        overload_kill_qlen => pos_integer(),
+                        overload_kill_mem_size => pos_integer(),
+                        overload_kill_restart_after =>
+                            non_neg_integer() | infinity}.
+
 -export_type([log_event/0,
               level/0,
               report/0,
@@ -137,7 +154,9 @@
               filter_arg/0,
               filter_return/0,
               config_handler/0,
-              formatter_config/0]).
+              formatter_config/0,
+              olp_config/0,
+              timestamp/0]).
 
 %%%-----------------------------------------------------------------
 %%% API
@@ -337,6 +356,10 @@ internal_log(Level,Term) when is_atom(Level) ->
     erlang:display_string("Logger - "++ atom_to_list(Level) ++ ": "),
     erlang:display(Term).
 
+-spec timestamp() -> timestamp().
+timestamp() ->
+    os:system_time(microsecond).
+
 %%%-----------------------------------------------------------------
 %%% Configuration
 -spec add_primary_filter(FilterId,Filter) -> ok | {error,term()} when
@@ -390,6 +413,7 @@ set_primary_config(Key,Value) ->
 set_primary_config(Config) ->
     logger_server:set_config(primary,Config).
 
+
 -spec set_handler_config(HandlerId,level,Level) -> Return when
       HandlerId :: handler_id(),
       Level :: level() | all | none,
@@ -419,6 +443,11 @@ set_handler_config(HandlerId,Key,Value) ->
 set_handler_config(HandlerId,Config) ->
     logger_server:set_config(HandlerId,Config).
 
+-spec set_proxy_config(Config) -> ok | {error,term()} when
+      Config :: olp_config().
+set_proxy_config(Config) ->
+    logger_server:set_config(proxy,Config).
+
 -spec update_primary_config(Config) -> ok | {error,term()} when
       Config :: primary_config().
 update_primary_config(Config) ->
@@ -453,6 +482,11 @@ update_handler_config(HandlerId,Key,Value) ->
 update_handler_config(HandlerId,Config) ->
     logger_server:update_config(HandlerId,Config).
 
+-spec update_proxy_config(Config) -> ok | {error,term()} when
+      Config :: olp_config().
+update_proxy_config(Config) ->
+    logger_server:update_config(proxy,Config).
+
 -spec get_primary_config() -> Config when
       Config :: primary_config().
 get_primary_config() ->
@@ -486,6 +520,12 @@ get_handler_ids() ->
     {ok,#{handlers:=HandlerIds}} = logger_config:get(?LOGGER_TABLE,primary),
     HandlerIds.
 
+-spec get_proxy_config() -> Config when
+      Config :: olp_config().
+get_proxy_config() ->
+    {ok,Config} = logger_config:get(?LOGGER_TABLE,proxy),
+    Config.
+
 -spec update_formatter_config(HandlerId,FormatterConfig) ->
                                      ok | {error,term()} when
       HandlerId :: handler_id(),
@@ -606,12 +646,150 @@ unset_process_metadata() ->
 
 -spec get_config() -> #{primary=>primary_config(),
                         handlers=>[handler_config()],
+                        proxy=>olp_config(),
                         module_levels=>[{module(),level() | all | none}]}.
 get_config() ->
     #{primary=>get_primary_config(),
       handlers=>get_handler_config(),
+      proxy=>get_proxy_config(),
       module_levels=>lists:keysort(1,get_module_level())}.
 
+-spec i() -> ok.
+i() ->
+    #{primary := Primary,
+      handlers := HandlerConfigs,
+      proxy := Proxy,
+      module_levels := Modules} = get_config(),
+    M = modifier(),
+    i_primary(Primary,M),
+    i_handlers(HandlerConfigs,M),
+    i_proxy(Proxy,M),
+    i_modules(Modules,M).
+
+-spec i(What) -> ok when
+      What :: primary | handlers | proxy | modules | handler_id().
+i(primary) ->
+    i_primary(get_primary_config(),modifier());
+i(handlers) ->
+    i_handlers(get_handler_config(),modifier());
+i(proxy) ->
+    i_proxy(get_proxy_config(),modifier());
+i(modules) ->
+    i_modules(get_module_level(),modifier());
+i(HandlerId) when is_atom(HandlerId) ->
+    case get_handler_config(HandlerId) of
+        {ok,HandlerConfig} ->
+            i_handlers([HandlerConfig],modifier());
+        Error ->
+            Error
+    end;
+i(What) ->
+    erlang:error(badarg,[What]).
+
+
+i_primary(#{level := Level,
+            filters := Filters,
+            filter_default := FilterDefault},
+          M) ->
+    io:format("Primary configuration: ~n",[]),
+    io:format("    Level: ~p~n",[Level]),
+    io:format("    Filter Default: ~p~n", [FilterDefault]),
+    io:format("    Filters: ~n", []),
+    print_filters("        ",Filters,M).
+
+i_handlers(HandlerConfigs,M) ->
+    io:format("Handler configuration: ~n", []),
+    print_handlers(HandlerConfigs,M).
+
+i_proxy(Proxy,M) ->
+    io:format("Proxy configuration: ~n", []),
+    print_custom("    ",Proxy,M).
+
+i_modules(Modules,M) ->
+    io:format("Level set per module: ~n", []),
+    print_module_levels(Modules,M).
+
+encoding() ->
+    case lists:keyfind(encoding, 1, io:getopts()) of
+	false -> latin1;
+	{encoding, Enc} -> Enc
+    end.
+
+modifier() ->
+    modifier(encoding()).
+
+modifier(latin1) -> "";
+modifier(_) -> "t".
+
+print_filters(Indent, {Id, {Fun, Arg}}, M) ->
+    io:format("~sId: ~"++M++"p~n"
+              "~s    Fun: ~"++M++"p~n"
+              "~s    Arg: ~"++M++"p~n",
+              [Indent, Id, Indent, Fun, Indent, Arg]);
+print_filters(Indent,[],_M) ->
+    io:format("~s(none)~n",[Indent]);
+print_filters(Indent,Filters,M) ->
+    [print_filters(Indent,Filter,M) || Filter <- Filters],
+    ok.
+
+print_handlers(#{id := Id,
+                 module := Module,
+                 level := Level,
+                 filters := Filters, filter_default := FilterDefault,
+                 formatter := {FormatterModule,FormatterConfig}} = Config, M) ->
+    io:format("    Id: ~"++M++"p~n"
+              "        Module: ~p~n"
+              "        Level:  ~p~n"
+              "        Formatter:~n"
+              "            Module: ~p~n"
+              "            Config:~n",
+              [Id, Module, Level, FormatterModule]),
+    print_custom("                ",FormatterConfig,M),
+    io:format("        Filter Default: ~p~n"
+              "        Filters:~n",
+              [FilterDefault]),
+    print_filters("            ",Filters,M),
+    case maps:find(config,Config) of
+        {ok,HandlerConfig} ->
+            io:format("        Handler Config:~n"),
+            print_custom("            ",HandlerConfig,M);
+        error ->
+            ok
+    end,
+    MyKeys = [filter_default, filters, formatter, level, module, id, config],
+    case maps:without(MyKeys,Config) of
+        Empty when Empty==#{} ->
+            ok;
+        Unhandled ->
+            io:format("        Custom Config:~n"),
+            print_custom("            ",Unhandled,M)
+    end;
+print_handlers([], _M) ->
+    io:format("    (none)~n");
+print_handlers(HandlerConfigs, M) ->
+    [print_handlers(HandlerConfig, M) || HandlerConfig <- HandlerConfigs],
+    ok.
+
+print_custom(Indent, {Key, Value}, M) ->
+    io:format("~s~"++M++"p: ~"++M++"p~n",[Indent,Key,Value]);
+print_custom(Indent, Map, M) when is_map(Map) ->
+    print_custom(Indent,lists:keysort(1,maps:to_list(Map)), M);
+print_custom(Indent, List, M) when is_list(List), is_tuple(hd(List)) ->
+    [print_custom(Indent, X, M) || X <- List],
+    ok;
+print_custom(Indent, Value, M) ->
+    io:format("~s~"++M++"p~n",[Indent,Value]).
+
+print_module_levels({Module,Level},M) ->
+    io:format("    Module: ~"++M++"p~n"
+              "        Level: ~p~n",
+              [Module,Level]);
+print_module_levels([],_M) ->
+    io:format("    (none)~n");
+print_module_levels(Modules,M) ->
+    [print_module_levels(Module,M) || Module <- Modules],
+    ok.
+
 -spec internal_init_logger() -> ok | {error,term()}.
 %% This function is responsible for config of the logger
 %% This is done before add_handlers because we want the
@@ -672,6 +850,17 @@ init_kernel_handlers(Env) ->
 %% This function is responsible for resolving the handler config
 %% and then starting the correct handlers. This is done after the
 %% kernel supervisor tree has been started as it needs the logger_sup.
+add_handlers(kernel) ->
+    Env = get_logger_env(kernel),
+    case get_proxy_opts(Env) of
+        undefined ->
+            add_handlers(kernel,Env);
+        Opts ->
+            case set_proxy_config(Opts) of
+                ok -> add_handlers(kernel,Env);
+                {error, Reason} -> {error,{bad_proxy_config,Reason}}
+            end
+    end;
 add_handlers(App) when is_atom(App) ->
     add_handlers(App,get_logger_env(App));
 add_handlers(HandlerConfig) ->
@@ -729,6 +918,8 @@ check_logger_config(kernel,[{filters,_,_}|Env]) ->
     check_logger_config(kernel,Env);
 check_logger_config(kernel,[{module_level,_,_}|Env]) ->
     check_logger_config(kernel,Env);
+check_logger_config(kernel,[{proxy,_}|Env]) ->
+    check_logger_config(kernel,Env);
 check_logger_config(_,Bad) ->
     throw(Bad).
 
@@ -784,6 +975,13 @@ get_primary_filters(Env) ->
         _ -> throw({multiple_filters,Env})
     end.
 
+get_proxy_opts(Env) ->
+    case [P || P={proxy,_} <- Env] of
+        [{proxy,Opts}] -> Opts;
+        [] -> undefined;
+        _ -> throw({multiple_proxies,Env})
+    end.
+
 %% This function looks at the kernel logger environment
 %% and updates it so that the correct logger is configured
 init_default_config(Type,Env) when Type==standard_io;
@@ -880,30 +1078,30 @@ log_allowed(Location,Level,Msg,Meta0) when is_map(Meta0) ->
              maps:merge(Location,maps:merge(proc_meta(),Meta0))),
     case node(maps:get(gl,Meta)) of
         Node when Node=/=node() ->
-            log_remote(Node,Level,Msg,Meta),
-            do_log_allowed(Level,Msg,Meta);
+            log_remote(Node,Level,Msg,Meta);
         _ ->
-            do_log_allowed(Level,Msg,Meta)
-    end.
+            ok
+    end,
+    do_log_allowed(Level,Msg,Meta,tid()).
 
-do_log_allowed(Level,{Format,Args}=Msg,Meta)
+do_log_allowed(Level,{Format,Args}=Msg,Meta,Tid)
   when ?IS_LEVEL(Level),
        is_list(Format),
        is_list(Args),
        is_map(Meta) ->
-    logger_backend:log_allowed(#{level=>Level,msg=>Msg,meta=>Meta},tid());
-do_log_allowed(Level,Report,Meta)
+    logger_backend:log_allowed(#{level=>Level,msg=>Msg,meta=>Meta},Tid);
+do_log_allowed(Level,Report,Meta,Tid)
   when ?IS_LEVEL(Level),
        ?IS_REPORT(Report),
        is_map(Meta) ->
     logger_backend:log_allowed(#{level=>Level,msg=>{report,Report},meta=>Meta},
-                               tid());
-do_log_allowed(Level,String,Meta)
+                               Tid);
+do_log_allowed(Level,String,Meta,Tid)
   when ?IS_LEVEL(Level),
        ?IS_STRING(String),
        is_map(Meta) ->
     logger_backend:log_allowed(#{level=>Level,msg=>{string,String},meta=>Meta},
-                               tid()).
+                               Tid).
 tid() ->
     ets:whereis(?LOGGER_TABLE).
 
@@ -913,7 +1111,7 @@ log_remote(Node,Level,Msg,Meta) ->
     log_remote(Node,{log,Level,Msg,Meta}).
 
 log_remote(Node,Request) ->
-    {logger,Node} ! Request,
+    logger_proxy:log({remote,Node,Request}),
     ok.
 
 add_default_metadata(Meta) ->
@@ -937,7 +1135,7 @@ proc_meta() ->
 
 default(pid) -> self();
 default(gl) -> group_leader();
-default(time) -> erlang:system_time(microsecond).
+default(time) -> timestamp().
 
 %% Remove everything upto and including this module from the stacktrace
 filter_stacktrace(Module,[{Module,_,_,_}|_]) ->
diff --git a/lib/kernel/src/logger_config.erl b/lib/kernel/src/logger_config.erl
index 5e9faf332c..5024d20cfe 100644
--- a/lib/kernel/src/logger_config.erl
+++ b/lib/kernel/src/logger_config.erl
@@ -66,6 +66,8 @@ get(Tid,What) ->
     case ets:lookup(Tid,table_key(What)) of
         [{_,_,Config}] ->
             {ok,Config};
+        [{_,Config}] when What=:=proxy ->
+            {ok,Config};
         [] ->
             {error,{not_found,What}}
     end.
@@ -79,10 +81,15 @@ get(Tid,What,Level) ->
         [Data] -> {ok,Data}
     end.
 
+create(Tid,proxy,Config) ->
+    ets:insert(Tid,{table_key(proxy),Config});
 create(Tid,What,Config) ->
     LevelInt = level_to_int(maps:get(level,Config)),
     ets:insert(Tid,{table_key(What),LevelInt,Config}).
 
+set(Tid,proxy,Config) ->
+    ets:insert(Tid,{table_key(proxy),Config}),
+    ok;
 set(Tid,What,Config) ->
     LevelInt = level_to_int(maps:get(level,Config)),
     %% Should do this only if the level has actually changed. Possibly
@@ -148,5 +155,6 @@ int_to_level(?LOG_ALL) -> all.
 %%%-----------------------------------------------------------------
 %%% Internal
 
+table_key(proxy) -> ?PROXY_KEY;
 table_key(primary) -> ?PRIMARY_KEY;
 table_key(HandlerId) -> {?HANDLER_KEY,HandlerId}.
diff --git a/lib/kernel/src/logger_disk_log_h.erl b/lib/kernel/src/logger_disk_log_h.erl
index 41e0d51a9d..47b39da900 100644
--- a/lib/kernel/src/logger_disk_log_h.erl
+++ b/lib/kernel/src/logger_disk_log_h.erl
@@ -24,7 +24,7 @@
 -include("logger_h_common.hrl").
 
 %%% API
--export([info/1, filesync/1, reset/1]).
+-export([filesync/1]).
 
 %% logger_h_common callbacks
 -export([init/2, check_config/4, reset_state/2,
@@ -47,25 +47,6 @@
 filesync(Name) ->
     logger_h_common:filesync(?MODULE,Name).
 
-%%%-----------------------------------------------------------------
-%%%
--spec info(Name) -> Info | {error,Reason} when
-      Name :: atom(),
-      Info :: term(),
-      Reason :: handler_busy | {badarg,term()}.
-
-info(Name) ->
-    logger_h_common:info(?MODULE,Name).
-
-%%%-----------------------------------------------------------------
-%%%
--spec reset(Name) -> ok | {error,Reason} when
-      Name :: atom(),
-      Reason :: handler_busy | {badarg,term()}.
-
-reset(Name) ->
-    logger_h_common:reset(?MODULE,Name).
-
 %%%===================================================================
 %%% logger callbacks
 %%%===================================================================
diff --git a/lib/kernel/src/logger_formatter.erl b/lib/kernel/src/logger_formatter.erl
index ded89bac9f..8696adbd72 100644
--- a/lib/kernel/src/logger_formatter.erl
+++ b/lib/kernel/src/logger_formatter.erl
@@ -64,7 +64,7 @@ format(#{level:=Level,msg:=Msg0,meta:=Meta},Config0)
                             Config;
                         Size0 ->
                             Size =
-                                case Size0 - string:length([B,A]) of
+                                case Size0 - io_lib:chars_length([B,A]) of
                                     S when S>=0 -> S;
                                     _ -> 0
                                 end,
@@ -75,7 +75,11 @@ format(#{level:=Level,msg:=Msg0,meta:=Meta},Config0)
                     true ->
                         %% Trim leading and trailing whitespaces, and replace
                         %% newlines with ", "
-                        re:replace(string:trim(MsgStr0),",?\r?\n\s*",", ",
+                        T = lists:reverse(
+                              trim(
+                                lists:reverse(
+                                  trim(MsgStr0,false)),true)),
+                        re:replace(T,",?\r?\n\s*",", ",
                                    [{return,list},global,unicode]);
                     _false ->
                         MsgStr0
@@ -83,7 +87,26 @@ format(#{level:=Level,msg:=Msg0,meta:=Meta},Config0)
            true ->
                 ""
         end,
-    truncate([B,MsgStr,A],maps:get(max_size,Config)).
+    truncate(B,MsgStr,A,maps:get(max_size,Config)).
+
+trim([H|T],Rev) when H==$\s; H==$\r; H==$\n ->
+    trim(T,Rev);
+trim([H|T],false) when is_list(H) ->
+    case trim(H,false) of
+        [] ->
+            trim(T,false);
+        TrimmedH ->
+            [TrimmedH|T]
+    end;
+trim([H|T],true) when is_list(H) ->
+    case trim(lists:reverse(H),true) of
+        [] ->
+            trim(T,true);
+        TrimmedH ->
+            [lists:reverse(TrimmedH)|T]
+    end;
+trim(String,_) ->
+    String.
 
 do_format(Level,Data,[level|Format],Config) ->
     [to_string(level,Level,Config)|do_format(Level,Data,Format,Config)];
@@ -239,21 +262,47 @@ chardata_to_list(Chardata) ->
             throw(Error)
     end.
 
-truncate(String,unlimited) ->
-    String;
-truncate(String,Size) ->
-    Length = string:length(String),
+truncate(B,Msg,A,unlimited) ->
+    [B,Msg,A];
+truncate(B,Msg,A,Size) ->
+    String = [B,Msg,A],
+    Length = io_lib:chars_length(String),
     if Length>Size ->
-            case lists:reverse(lists:flatten(String)) of
-                [$\n|_] ->
-                    string:slice(String,0,Size-4)++"...\n";
+            {Last,FlatString} =
+                case A of
+                    [] ->
+                        case Msg of
+                            [] ->
+                                {get_last(B),lists:flatten(B)};
+                            _ ->
+                                {get_last(Msg),lists:flatten([B,Msg])}
+                        end;
+                    _ ->
+                        {get_last(A),lists:flatten(String)}
+                end,
+            case Last of
+                $\n->
+                    lists:sublist(FlatString,1,Size-4)++"...\n";
                 _ ->
-                    string:slice(String,0,Size-3)++"..."
+                    lists:sublist(FlatString,1,Size-3)++"..."
             end;
        true ->
             String
     end.
 
+get_last(L) ->
+    get_first(lists:reverse(L)).
+
+get_first([]) ->
+    error;
+get_first([C|_]) when is_integer(C) ->
+    C;
+get_first([L|Rest]) when is_list(L) ->
+    case get_last(L) of
+        error -> get_first(Rest);
+        First -> First
+    end.
+
 %% SysTime is the system time in microseconds
 format_time(SysTime,#{time_offset:=Offset,time_designator:=Des})
   when is_integer(SysTime) ->
diff --git a/lib/kernel/src/logger_h_common.erl b/lib/kernel/src/logger_h_common.erl
index 74a2d158fc..16946ff97c 100644
--- a/lib/kernel/src/logger_h_common.erl
+++ b/lib/kernel/src/logger_h_common.erl
@@ -24,11 +24,11 @@
 -include("logger_internal.hrl").
 
 %% API
--export([start_link/1, info/2, filesync/2, reset/2]).
+-export([filesync/2]).
 
-%% gen_server and proc_lib callbacks
--export([init/1, handle_call/3, handle_cast/2, handle_info/2,
-         terminate/2, code_change/3]).
+%% logger_olp callbacks
+-export([init/1, handle_load/2, handle_call/3, handle_cast/2, handle_info/2,
+         terminate/2, code_change/3, notify/2, reset_state/1]).
 
 %% logger callbacks
 -export([log/2, adding_handler/1, removing_handler/1, changing_config/3,
@@ -37,52 +37,45 @@
 %% Library functions for handlers
 -export([error_notify/1]).
 
-%%%-----------------------------------------------------------------
--define(CONFIG_KEYS,[sync_mode_qlen,
-                     drop_mode_qlen,
-                     flush_qlen,
-                     burst_limit_enable,
-                     burst_limit_max_count,
-                     burst_limit_window_time,
-                     overload_kill_enable,
-                     overload_kill_qlen,
-                     overload_kill_mem_size,
-                     overload_kill_restart_after,
-                     filesync_repeat_interval]).
--define(READ_ONLY_KEYS,[handler_pid,mode_tab]).
+-define(OLP_KEYS,[sync_mode_qlen,
+                  drop_mode_qlen,
+                  flush_qlen,
+                  burst_limit_enable,
+                  burst_limit_max_count,
+                  burst_limit_window_time,
+                  overload_kill_enable,
+                  overload_kill_qlen,
+                  overload_kill_mem_size,
+                  overload_kill_restart_after]).
+
+-define(COMMON_KEYS,[filesync_repeat_interval]).
+
+-define(READ_ONLY_KEYS,[olp]).
 
 %%%-----------------------------------------------------------------
 %%% API
 
 %% This function is called by the logger_sup supervisor
-start_link(Args) ->
-    proc_lib:start_link(?MODULE,init,[Args]).
-
 filesync(Module, Name) ->
     call(Module, Name, filesync).
 
-info(Module, Name) ->
-    call(Module, Name, info).
-
-reset(Module, Name) ->
-    call(Module, Name, reset).
-
 %%%-----------------------------------------------------------------
 %%% Handler being added
 adding_handler(#{id:=Name,module:=Module}=Config) ->
     HConfig0 = maps:get(config, Config, #{}),
-    HandlerConfig0 = maps:without(?CONFIG_KEYS,HConfig0),
+    HandlerConfig0 = maps:without(?OLP_KEYS++?COMMON_KEYS,HConfig0),
     case Module:check_config(Name,set,undefined,HandlerConfig0) of
         {ok,HandlerConfig} ->
-            ModifiedCommon = maps:with(?CONFIG_KEYS,HandlerConfig),
-            CommonConfig0 = maps:with(?CONFIG_KEYS,HConfig0),
+            ModifiedCommon = maps:with(?COMMON_KEYS,HandlerConfig),
+            CommonConfig0 = maps:with(?COMMON_KEYS,HConfig0),
             CommonConfig = maps:merge(
                              maps:merge(get_default_config(), CommonConfig0),
                              ModifiedCommon),
             case check_config(CommonConfig) of
                 ok ->
                     HConfig = maps:merge(CommonConfig,HandlerConfig),
-                    start(Config#{config => HConfig});
+                    OlpOpts = maps:with(?OLP_KEYS,HConfig0),
+                    start(OlpOpts, Config#{config => HConfig});
                 {error,Faulty} ->
                     {error,{invalid_config,Module,Faulty}}
             end;
@@ -92,11 +85,11 @@ adding_handler(#{id:=Name,module:=Module}=Config) ->
 
 %%%-----------------------------------------------------------------
 %%% Handler being removed
-removing_handler(#{id:=Name, module:=Module}) ->
+removing_handler(#{id:=Name, module:=Module, config:=#{olp:=Olp}}) ->
     case whereis(?name_to_reg_name(Module,Name)) of
         undefined ->
             ok;
-        Pid ->
+        _Pid ->
             %% We don't want to do supervisor:terminate_child here
             %% since we need to distinguish this explicit stop from a
             %% system termination in order to avoid circular attempts
@@ -106,7 +99,7 @@ removing_handler(#{id:=Name, module:=Module}) ->
             %% the restart type is temporary, which means that the
             %% child specification is automatically removed from the
             %% supervisor when the process dies.
-            _ = gen_server:call(Pid, stop),
+            _ = logger_olp:stop(Olp),
             ok
     end.
 
@@ -116,34 +109,53 @@ changing_config(SetOrUpdate,
                 #{id:=Name,config:=OldHConfig,module:=Module},
                 NewConfig0) ->
     NewHConfig0 = maps:get(config, NewConfig0, #{}),
-    OldHandlerConfig = maps:without(?CONFIG_KEYS++?READ_ONLY_KEYS,OldHConfig),
-    NewHandlerConfig0 = maps:without(?CONFIG_KEYS++?READ_ONLY_KEYS,NewHConfig0),
+    NoHandlerKeys = ?OLP_KEYS++?COMMON_KEYS++?READ_ONLY_KEYS,
+    OldHandlerConfig = maps:without(NoHandlerKeys,OldHConfig),
+    NewHandlerConfig0 = maps:without(NoHandlerKeys,NewHConfig0),
     case Module:check_config(Name, SetOrUpdate,
                              OldHandlerConfig,NewHandlerConfig0) of
         {ok, NewHandlerConfig} ->
-            ModifiedCommon = maps:with(?CONFIG_KEYS,NewHandlerConfig),
-            NewCommonConfig0 = maps:with(?CONFIG_KEYS,NewHConfig0),
+            ModifiedCommon = maps:with(?COMMON_KEYS,NewHandlerConfig),
+            NewCommonConfig0 = maps:with(?COMMON_KEYS,NewHConfig0),
+            OldCommonConfig = maps:with(?COMMON_KEYS,OldHConfig),
             CommonDefault =
                 case SetOrUpdate of
                     set ->
                         get_default_config();
                     update ->
-                        maps:with(?CONFIG_KEYS,OldHConfig)
+                        OldCommonConfig
                 end,
             NewCommonConfig = maps:merge(
                                 maps:merge(CommonDefault,NewCommonConfig0),
                                 ModifiedCommon),
             case check_config(NewCommonConfig) of
                 ok ->
-                    ReadOnly = maps:with(?READ_ONLY_KEYS,OldHConfig),
-                    NewHConfig = maps:merge(
-                                   maps:merge(NewCommonConfig,NewHandlerConfig),
-                                   ReadOnly),
-                    NewConfig = NewConfig0#{config=>NewHConfig},
-                    HPid = maps:get(handler_pid,OldHConfig),
-                    case call(HPid, {change_config,NewConfig}) of
-                        ok      -> {ok,NewConfig};
-                        Error  -> Error
+                    OlpDefault =
+                        case SetOrUpdate of
+                            set ->
+                                logger_olp:get_default_opts();
+                            update ->
+                                maps:with(?OLP_KEYS,OldHConfig)
+                        end,
+                    Olp = maps:get(olp,OldHConfig),
+                    NewOlpOpts = maps:merge(OlpDefault,
+                                            maps:with(?OLP_KEYS,NewHConfig0)),
+                    case logger_olp:set_opts(Olp,NewOlpOpts) of
+                        ok ->
+                            logger_olp:cast(Olp, {config_changed,
+                                                  NewCommonConfig,
+                                                  NewHandlerConfig}),
+                            ReadOnly = maps:with(?READ_ONLY_KEYS,OldHConfig),
+                            NewHConfig =
+                                maps:merge(
+                                  maps:merge(
+                                    maps:merge(NewCommonConfig,NewHandlerConfig),
+                                    ReadOnly),
+                                  NewOlpOpts),
+                            NewConfig = NewConfig0#{config=>NewHConfig},
+                            {ok,NewConfig};
+                        Error  ->
+                            Error
                     end;
                 {error,Faulty} ->
                     {error,{invalid_config,Module,Faulty}}
@@ -158,14 +170,12 @@ changing_config(SetOrUpdate,
       LogEvent :: logger:log_event(),
       Config :: logger:handler_config().
 
-log(LogEvent, Config = #{id := Name,
-                         config := #{handler_pid := HPid,
-                                     mode_tab := ModeTab}}) ->
+log(LogEvent, Config = #{config := #{olp:=Olp}}) ->
     %% if the handler has crashed, we must drop this event
     %% and hope the handler restarts so we can try again
-    true = is_process_alive(HPid),
+    true = is_process_alive(logger_olp:get_pid(Olp)),
     Bin = log_to_binary(LogEvent, Config),
-    call_cast_or_drop(Name, HPid, ModeTab, Bin).
+    logger_olp:load(Olp,Bin).
 
 %%%-----------------------------------------------------------------
 %%% Remove internal fields from configuration
@@ -180,18 +190,23 @@ filter_config(#{config:=HConfig}=Config) ->
 %%%
 %%% The handler process is linked to logger_sup, which is part of the
 %%% kernel application's supervision tree.
-start(#{id := Name} = Config0) ->
+start(OlpOpts0, #{id := Name, module:=Module, config:=HConfig} = Config0) ->
+    RegName = ?name_to_reg_name(Module,Name),
     ChildSpec =
         #{id       => Name,
-          start    => {?MODULE, start_link, [Config0]},
+          start    => {logger_olp, start_link, [RegName,?MODULE,
+                                                Config0, OlpOpts0]},
           restart  => temporary,
           shutdown => 2000,
           type     => worker,
           modules  => [?MODULE]},
     case supervisor:start_child(logger_sup, ChildSpec) of
-        {ok,Pid,Config} ->
+        {ok,Pid,Olp} ->
             ok = logger_handler_watcher:register_handler(Name,Pid),
-            {ok,Config};
+            OlpOpts = logger_olp:get_opts(Olp),
+            {ok,Config0#{config=>(maps:merge(HConfig,OlpOpts))#{olp=>Olp}}};
+        {error,{Reason,Ch}} when is_tuple(Ch), element(1,Ch)==child ->
+            {error,Reason};
         Error ->
             Error
     end.
@@ -200,103 +215,50 @@ start(#{id := Name} = Config0) ->
 %%% gen_server callbacks
 %%%===================================================================
 
-init(#{id := Name, module := Module,
-       formatter := Formatter, config := HConfig0} = Config0) ->
-    RegName = ?name_to_reg_name(Module,Name),
-    register(RegName, self()),
+init(#{id := Name, module := Module, config := HConfig}) ->
     process_flag(trap_exit, true),
-    process_flag(message_queue_data, off_heap),
 
     ?init_test_hooks(),
-    ?start_observation(Name),
 
-    case Module:init(Name, HConfig0) of
+    case Module:init(Name, HConfig) of
         {ok,HState} ->
-            try ets:new(Name, [public]) of
-                ModeTab ->
-                    ?set_mode(ModeTab, async),
-                    T0 = ?timestamp(),
-                    HConfig = HConfig0#{handler_pid => self(),
-                                        mode_tab => ModeTab},
-                    Config = Config0#{config => HConfig},
-                    proc_lib:init_ack({ok,self(),Config}),
-                    %% Storing common config in state to avoid copying
-                    %% (sending) the config data for each log message
-                    CommonConfig = maps:with(?CONFIG_KEYS,HConfig),
-                    State =
-                        ?merge_with_stats(
-                           CommonConfig#{id => Name,
-                                         module => Module,
-                                         mode_tab => ModeTab,
-                                         mode => async,
-                                         ctrl_sync_count =>
-                                             ?CONTROLLER_SYNC_INTERVAL,
-                                         last_qlen => 0,
-                                         last_log_ts => T0,
-                                         last_op => sync,
-                                         burst_win_ts => T0,
-                                         burst_msg_count => 0,
-                                         formatter => Formatter,
-                                         handler_state => HState}),
-                    State1 = set_repeated_filesync(State),
-                    unset_restart_flag(State1),
-                    gen_server:enter_loop(?MODULE, [], State1)
-            catch
-                _:Error ->
-                    unregister(RegName),
-                    error_notify({init_handler,Name,Error}),
-                    proc_lib:init_ack(Error)
-            end;
+            %% Storing common config in state to avoid copying
+            %% (sending) the config data for each log message
+            CommonConfig = maps:with(?COMMON_KEYS,HConfig),
+            State = CommonConfig#{id => Name,
+                                  module => Module,
+                                  ctrl_sync_count =>
+                                      ?CONTROLLER_SYNC_INTERVAL,
+                                  last_op => sync,
+                                  handler_state => HState},
+            State1 = set_repeated_filesync(State),
+            {ok,State1};
         Error ->
-            unregister(RegName),
-            error_notify({init_handler,Name,Error}),
-            proc_lib:init_ack(Error)
+            Error
     end.
 
-%% This is the synchronous log event.
-handle_call({log, Bin}, _From, State) ->
-    {Result,State1} = do_log(Bin, call, State),
-    %% Result == ok | dropped
-    {reply,Result, State1};
+%% This is the log event.
+handle_load(Bin, #{id:=Name,
+                   module:=Module,
+                   handler_state:=HandlerState,
+                   ctrl_sync_count := CtrlSync}=State) ->
+    if CtrlSync==0 ->
+            {_,HS1} = Module:write(Name, sync, Bin, HandlerState),
+            State#{handler_state => HS1,
+                   ctrl_sync_count => ?CONTROLLER_SYNC_INTERVAL,
+                   last_op=>write};
+       true ->
+            {_,HS1} = Module:write(Name, async, Bin, HandlerState),
+            State#{handler_state => HS1,
+                   ctrl_sync_count => CtrlSync-1,
+                   last_op=>write}
+    end.
 
 handle_call(filesync, _From, State = #{id := Name,
                                        module := Module,
                                        handler_state := HandlerState}) ->
     {Result,HandlerState1} = Module:filesync(Name,sync,HandlerState),
-    {reply, Result, State#{handler_state=>HandlerState1, last_op=>sync}};
-
-handle_call({change_config, #{formatter:=Formatter, config:=NewHConfig}}, _From,
-            State = #{filesync_repeat_interval := FSyncInt0}) ->
-    %% In the future, if handler_state must be updated due to config
-    %% change, then we need to add a callback to Module here.
-    CommonConfig = maps:with(?CONFIG_KEYS,NewHConfig),
-    State1 = maps:merge(State, CommonConfig),
-    State2 =
-        case maps:get(filesync_repeat_interval, NewHConfig) of
-            FSyncInt0 ->
-                State1;
-            _FSyncInt1 ->
-                set_repeated_filesync(cancel_repeated_filesync(State1))
-        end,
-    {reply, ok, State2#{formatter:=Formatter}};
-
-handle_call(info, _From, State) ->
-    {reply, State, State};
-
-handle_call(reset, _From,
-            #{id:=Name,module:=Module,handler_state:=HandlerState}=State) ->
-    State1 = ?merge_with_stats(State),
-    {reply, ok, State1#{last_qlen => 0,
-                        last_log_ts => ?timestamp(),
-                        handler_state => Module:reset_state(Name,HandlerState)}};
-
-handle_call(stop, _From, State) ->
-    {stop, {shutdown,stopped}, ok, State}.
-
-%% This is the asynchronous log event.
-handle_cast({log, Bin}, State) ->
-    {_,State1} = do_log(Bin, cast, State),
-    {noreply, State1};
+    {reply, Result, State#{handler_state=>HandlerState1, last_op=>sync}}.
 
 %% If FILESYNC_REPEAT_INTERVAL is set to a millisec value, this
 %% clause gets called repeatedly by the handler. In order to
@@ -319,168 +281,96 @@ handle_cast(repeated_filesync,
                 {_,HS} = Module:filesync(Name, async, HandlerState),
                 State#{handler_state => HS, last_op => sync}
         end,
-    {noreply,set_repeated_filesync(State1)}.
+    {noreply,set_repeated_filesync(State1)};
+handle_cast({config_changed, CommonConfig, HConfig},
+            State = #{id := Name,
+                      module := Module,
+                      handler_state := HandlerState,
+                      filesync_repeat_interval := OldFSyncInt}) ->
+    State1 =
+        case maps:get(filesync_repeat_interval,CommonConfig) of
+            OldFSyncInt ->
+                State;
+            FSyncInt ->
+                set_repeated_filesync(
+                  cancel_repeated_filesync(
+                    State#{filesync_repeat_interval=>FSyncInt}))
+        end,
+    HS = try Module:config_changed(Name, HConfig, HandlerState)
+         catch error:undef -> HandlerState
+         end,
+    {noreply, State1#{handler_state => HS}}.
 
 handle_info(Info, #{id := Name, module := Module,
                     handler_state := HandlerState} = State) ->
     {noreply,State#{handler_state => Module:handle_info(Name,Info,HandlerState)}}.
 
-terminate(Reason, State = #{id := Name,
-                            module := Module,
-                            handler_state := HandlerState}) ->
+terminate(overloaded=Reason, #{id:=Name}=State) ->
+    _ = log_handler_info(Name,"Handler ~p overloaded and stopping",[Name],State),
+    do_terminate(Reason,State),
+    ConfigResult = logger:get_handler_config(Name),
+    case ConfigResult of
+        {ok,#{module:=Module}=HConfig0} ->
+            spawn(fun() -> logger:remove_handler(Name) end),
+            HConfig = try Module:filter_config(HConfig0)
+                      catch _:_ -> HConfig0
+                      end,
+            {ok,fun() -> logger:add_handler(Name,Module,HConfig) end};
+        Error ->
+            error_notify({Name,restart_impossible,Error}),
+            Error
+    end;
+terminate(Reason, State) ->
+    do_terminate(Reason, State).
+
+do_terminate(Reason, State = #{id := Name,
+                               module := Module,
+                               handler_state := HandlerState}) ->
     _ = cancel_repeated_filesync(State),
     _ = Module:terminate(Name, Reason, HandlerState),
-    ok = stop_or_restart(Name, Reason, State),
-    unregister(?name_to_reg_name(Module, Name)),
     ok.
 
 code_change(_OldVsn, State, _Extra) ->
     {ok, State}.
 
+reset_state(#{id:=Name, module:=Module, handler_state:=HandlerState} = State) ->
+    State#{handler_state=>Module:reset_state(Name, HandlerState)}.
 
 %%%-----------------------------------------------------------------
 %%% Internal functions
 call(Module, Name, Op) when is_atom(Name) ->
-    call(?name_to_reg_name(Module,Name), Op);
+    case logger_olp:call(?name_to_reg_name(Module,Name), Op) of
+        {error,busy} -> {error,handler_busy};
+        Other -> Other
+    end;
 call(_, Name, Op) ->
     {error,{badarg,{Op,[Name]}}}.
 
-call(Server, Msg) ->
-    try
-        gen_server:call(Server, Msg, ?DEFAULT_CALL_TIMEOUT)
-    catch
-        _:{timeout,_} -> {error,handler_busy}
-    end.
-
-%% check for overload between every event (and set Mode to async,
-%% sync or drop accordingly), but never flush the whole mailbox
-%% before LogWindowSize events have been handled
-do_log(Bin, CallOrCast, State = #{id:=Name, mode:=Mode0}) ->
-    T1 = ?timestamp(),
-
-    %% check if the handler is getting overloaded, or if it's
-    %% recovering from overload (the check must be done for each
-    %% event to react quickly to large bursts of events and
-    %% to ensure that the handler can never end up in drop mode
-    %% with an empty mailbox, which would stop operation)
-    {Mode1,QLen,Mem,State1} = check_load(State),
-
-    if (Mode1 == drop) andalso (Mode0 =/= drop) ->
-            log_handler_info(Name, "Handler ~p switched to drop mode",
-                             [Name], State);
-       (Mode0 == drop) andalso ((Mode1 == async) orelse (Mode1 == sync)) ->
-            log_handler_info(Name, "Handler ~p switched to ~w mode",
-                             [Name,Mode1], State);
-       true ->
-            ok
-    end,
-
-    %% kill the handler if it can't keep up with the load
-    kill_if_choked(Name, QLen, Mem, State),
-
-    if Mode1 == flush ->
-            flush(Name, QLen, T1, State1);
-       true ->
-            write(Name, Mode1, T1, Bin, CallOrCast, State1)
-    end.
-
-%% this clause is called by do_log/3 after an overload check
-%% has been performed, where QLen > FlushQLen
-flush(Name, _QLen0, T1, State=#{last_log_ts := _T0, mode_tab := ModeTab}) ->
-    %% flush messages in the mailbox (a limited number in
-    %% order to not cause long delays)
-    NewFlushed = flush_log_events(?FLUSH_MAX_N),
-
-    %% write info in log about flushed messages
+notify({mode_change,Mode0,Mode1},#{id:=Name}=State) ->
+    log_handler_info(Name,"Handler ~p switched from  ~p to ~p mode",
+                     [Name,Mode0,Mode1], State);
+notify({flushed,Flushed},#{id:=Name}=State) ->
     log_handler_info(Name, "Handler ~p flushed ~w log events",
-                     [Name,NewFlushed], State),
-
-    %% because of the receive loop when flushing messages, the
-    %% handler will be scheduled out often and the mailbox could
-    %% grow very large, so we'd better check the queue again here
-    {_,_QLen1} = process_info(self(), message_queue_len),
-    ?observe(Name,{max_qlen,_QLen1}),
-
-    %% Add 1 for the current log event
-    ?observe(Name,{flushed,NewFlushed+1}),
-
-    State1 = ?update_max_time(?diff_time(T1,_T0),State),
-    State2 = ?update_max_qlen(_QLen1,State1),
-    {dropped,?update_other(flushed,FLUSHED,NewFlushed,
-                           State2#{mode => ?set_mode(ModeTab,async),
-                                   last_qlen => 0,
-                                   last_log_ts => T1})}.
-
-%% this clause is called to write to file
-write(Name, Mode, T1, Bin, _CallOrCast,
-      State = #{module := Module,
-                handler_state := HandlerState,
-                mode_tab := ModeTab,
-                ctrl_sync_count := CtrlSync,
-                last_qlen := LastQLen,
-                last_log_ts := T0}) ->
-    %% check if we need to limit the number of writes
-    %% during a burst of log events
-    {DoWrite,State1} = limit_burst(State),
-
-    %% only log synhrounously every ?CONTROLLER_SYNC_INTERVAL time, to
-    %% give the handler time between writes so it can keep up with
-    %% incoming messages
-    {Result,LastQLen1,HandlerState1} =
-        if DoWrite, CtrlSync == 0 ->
-                ?observe(Name,{_CallOrCast,1}),
-                {_,HS1} = Module:write(Name, sync, Bin, HandlerState),
-                {ok,element(2, process_info(self(), message_queue_len)),HS1};
-           DoWrite ->
-                ?observe(Name,{_CallOrCast,1}),
-                {_,HS1} = Module:write(Name, async, Bin, HandlerState),
-                {ok,LastQLen,HS1};
-           not DoWrite ->
-                ?observe(Name,{flushed,1}),
-                {dropped,LastQLen,HandlerState}
-        end,
-
-    %% Check if the time since the previous log event is long enough -
-    %% and the queue length small enough - to assume the mailbox has
-    %% been emptied, and if so, do filesync operation and reset mode to
-    %% async. Note that this is the best we can do to detect an idle
-    %% handler without setting a timer after each log call/cast. If the
-    %% time between two consecutive log events is fast and no new
-    %% event comes in after the last one, idle state won't be detected!
-    Time = ?diff_time(T1,T0),
-    State2 =
-        if (LastQLen1 < ?FILESYNC_OK_QLEN) andalso
-           (Time > ?IDLE_DETECT_TIME_USEC) ->
-                {_,HS2} = Module:filesync(Name,async,HandlerState),
-                State1#{mode => ?change_mode(ModeTab, Mode, async),
-                        burst_msg_count => 0,
-                        handler_state => HS2};
-           true ->
-                State1#{mode => Mode, handler_state => HandlerState1}
-        end,
-    State3 = ?update_calls_or_casts(_CallOrCast,1,State2),
-    State4 = ?update_max_qlen(LastQLen1,State3),
-    State5 =
-        ?update_max_time(Time,
-                         State4#{last_qlen := LastQLen1,
-                                 last_log_ts => T1,
-                                 last_op => write,
-                                 ctrl_sync_count =>
-                                     if CtrlSync==0 -> ?CONTROLLER_SYNC_INTERVAL;
-                                        true -> CtrlSync-1
-                                     end}),
-    {Result,State5}.
+                     [Name,Flushed], State);
+notify(restart,#{id:=Name}=State) ->
+    log_handler_info(Name, "Handler ~p restarted", [Name], State);
+notify(idle,#{id:=Name,module:=Module,handler_state:=HandlerState}=State) ->
+    {_,HS} = Module:filesync(Name,async,HandlerState),
+    State#{handler_state=>HS, last_op=>sync}.
 
 log_handler_info(Name, Format, Args, #{module:=Module,
-                                       formatter:=Formatter,
-                                       handler_state:=HandlerState}) ->
-    Config = #{formatter=>Formatter},
-    Meta = #{time=>erlang:system_time(microsecond)},
+                                       handler_state:=HandlerState}=State) ->
+    Config =
+        case logger:get_handler_config(Name) of
+            {ok,Conf} -> Conf;
+            _ -> #{formatter=>{?DEFAULT_FORMATTER,?DEFAULT_FORMAT_CONFIG}}
+        end,
+    Meta = #{time=>logger:timestamp()},
     Bin = log_to_binary(#{level => notice,
                           msg => {Format,Args},
                           meta => Meta}, Config),
-    _ = Module:write(Name, async, Bin, HandlerState),
-    ok.
+    {_,HS} = Module:write(Name, async, Bin, HandlerState),
+    State#{handler_state=>HS, last_op=>write}.
 
 %%%-----------------------------------------------------------------
 %%% Convert log data on any form to binary
@@ -540,42 +430,8 @@ string_to_binary(String) ->
 %%%-----------------------------------------------------------------
 %%% Check that the configuration term is valid
 check_config(Config) when is_map(Config) ->
-    case check_common_config(maps:to_list(Config)) of
-        ok ->
-            case overload_levels_ok(Config) of
-                true ->
-                    ok;
-                false ->
-                    Faulty = maps:with([sync_mode_qlen,
-                                        drop_mode_qlen,
-                                        flush_qlen],Config),
-                    {error,{invalid_levels,Faulty}}
-            end;
-        Error ->
-            Error
-    end.
+    check_common_config(maps:to_list(Config)).
 
-check_common_config([{sync_mode_qlen,N}|Config]) when is_integer(N) ->
-    check_common_config(Config);
-check_common_config([{drop_mode_qlen,N}|Config]) when is_integer(N) ->
-    check_common_config(Config);
-check_common_config([{flush_qlen,N}|Config]) when is_integer(N) ->
-    check_common_config(Config);
-check_common_config([{burst_limit_enable,Bool}|Config]) when is_boolean(Bool) ->
-    check_common_config(Config);
-check_common_config([{burst_limit_max_count,N}|Config]) when is_integer(N) ->
-    check_common_config(Config);
-check_common_config([{burst_limit_window_time,N}|Config]) when is_integer(N) ->
-    check_common_config(Config);
-check_common_config([{overload_kill_enable,Bool}|Config]) when is_boolean(Bool) ->
-    check_common_config(Config);
-check_common_config([{overload_kill_qlen,N}|Config]) when is_integer(N) ->
-    check_common_config(Config);
-check_common_config([{overload_kill_mem_size,N}|Config]) when is_integer(N) ->
-    check_common_config(Config);
-check_common_config([{overload_kill_restart_after,NorA}|Config])
-  when is_integer(NorA); NorA == infinity ->
-    check_common_config(Config);
 check_common_config([{filesync_repeat_interval,NorA}|Config])
   when is_integer(NorA); NorA == no_repeat ->
     check_common_config(Config);
@@ -585,156 +441,7 @@ check_common_config([]) ->
     ok.
 
 get_default_config() ->
-    #{sync_mode_qlen              => ?SYNC_MODE_QLEN,
-      drop_mode_qlen              => ?DROP_MODE_QLEN,
-      flush_qlen                  => ?FLUSH_QLEN,
-      burst_limit_enable          => ?BURST_LIMIT_ENABLE,
-      burst_limit_max_count       => ?BURST_LIMIT_MAX_COUNT,
-      burst_limit_window_time     => ?BURST_LIMIT_WINDOW_TIME,
-      overload_kill_enable        => ?OVERLOAD_KILL_ENABLE,
-      overload_kill_qlen          => ?OVERLOAD_KILL_QLEN,
-      overload_kill_mem_size      => ?OVERLOAD_KILL_MEM_SIZE,
-      overload_kill_restart_after => ?OVERLOAD_KILL_RESTART_AFTER,
-      filesync_repeat_interval    => ?FILESYNC_REPEAT_INTERVAL}.
-
-%%%-----------------------------------------------------------------
-%%% Overload Protection
-call_cast_or_drop(_Name, HandlerPid, ModeTab, Bin) ->
-    %% If the handler process is getting overloaded, the log event
-    %% will be synchronous instead of asynchronous (slows down the
-    %% logging tempo of a process doing lots of logging. If the
-    %% handler is choked, drop mode is set and no event will be sent.
-    try ?get_mode(ModeTab) of
-        async ->
-            gen_server:cast(HandlerPid, {log,Bin});
-        sync ->
-            case call(HandlerPid, {log,Bin}) of
-                ok ->
-                    ok;
-                _Other ->
-                    %% dropped or {error,handler_busy}
-                    ?observe(_Name,{dropped,1}),
-                    ok
-            end;
-        drop ->
-            ?observe(_Name,{dropped,1})
-    catch
-        %% if the ETS table doesn't exist (maybe because of a
-        %% handler restart), we can only drop the event
-        _:_ -> ?observe(_Name,{dropped,1})
-    end,
-    ok.
-
-set_restart_flag(#{id := Name, module := Module} = State) ->
-    log_handler_info(Name, "Handler ~p overloaded and stopping", [Name], State),
-    Flag = list_to_atom(lists:concat([Module,"_",Name,"_restarting"])),
-    spawn(fun() ->
-                  register(Flag, self()),
-                  timer:sleep(infinity)
-          end),
-    ok.
-
-unset_restart_flag(#{id := Name, module := Module} = State) ->
-    Flag = list_to_atom(lists:concat([Module,"_",Name,"_restarting"])),
-    case whereis(Flag) of
-        undefined ->
-            ok;
-        Pid ->
-            exit(Pid, kill),
-            log_handler_info(Name, "Handler ~p restarted", [Name], State)
-    end.
-
-check_load(State = #{id:=_Name, mode_tab := ModeTab, mode := Mode,
-                     sync_mode_qlen := SyncModeQLen,
-                     drop_mode_qlen := DropModeQLen,
-                     flush_qlen := FlushQLen}) ->
-    {_,Mem} = process_info(self(), memory),
-    ?observe(_Name,{max_mem,Mem}),
-    {_,QLen} = process_info(self(), message_queue_len),
-    ?observe(_Name,{max_qlen,QLen}),
-    %% When the handler process gets scheduled in, it's impossible
-    %% to predict the QLen. We could jump "up" arbitrarily from say
-    %% async to sync, async to drop, sync to flush, etc. However, when
-    %% the handler process manages the log events (without flushing),
-    %% one after the other, we will move "down" from drop to sync and
-    %% from sync to async. This way we don't risk getting stuck in
-    %% drop or sync mode with an empty mailbox.
-    {Mode1,_NewDrops,_NewFlushes} =
-        if
-            QLen >= FlushQLen ->
-                {flush, 0,1};
-            QLen >= DropModeQLen ->
-                %% Note that drop mode will force log events to
-                %% be dropped on the client side (never sent get to
-                %% the handler).
-                IncDrops = if Mode == drop -> 0; true -> 1 end,
-                {?change_mode(ModeTab, Mode, drop), IncDrops,0};
-            QLen >= SyncModeQLen ->
-                {?change_mode(ModeTab, Mode, sync), 0,0};
-            true ->
-                {?change_mode(ModeTab, Mode, async), 0,0}
-        end,
-    State1 = ?update_other(drops,DROPS,_NewDrops,State),
-    {Mode1, QLen, Mem,
-     ?update_other(flushes,FLUSHES,_NewFlushes,
-                   State1#{last_qlen => QLen})}.
-
-limit_burst(#{burst_limit_enable := false}=State) ->
-     {true,State};
-limit_burst(#{burst_win_ts := BurstWinT0,
-              burst_msg_count := BurstMsgCount,
-              burst_limit_window_time := BurstLimitWinTime,
-              burst_limit_max_count := BurstLimitMaxCnt} = State) ->
-    if (BurstMsgCount >= BurstLimitMaxCnt) -> 
-            %% the limit for allowed messages has been reached
-            BurstWinT1 = ?timestamp(),
-            case ?diff_time(BurstWinT1,BurstWinT0) of
-                BurstCheckTime when BurstCheckTime < (BurstLimitWinTime*1000) ->
-                    %% we're still within the burst time frame
-                    {false,?update_other(burst_drops,BURSTS,1,State)};
-                _BurstCheckTime ->
-                    %% burst time frame passed, reset counters
-                    {true,State#{burst_win_ts => BurstWinT1,
-                                 burst_msg_count => 0}}
-            end;
-       true ->
-            %% the limit for allowed messages not yet reached
-            {true,State#{burst_win_ts => BurstWinT0,
-                         burst_msg_count => BurstMsgCount+1}}
-    end.
-
-kill_if_choked(Name, QLen, Mem, State = #{overload_kill_enable   := KillIfOL,
-                                          overload_kill_qlen     := OLKillQLen,
-                                          overload_kill_mem_size := OLKillMem}) ->
-    if KillIfOL andalso
-       ((QLen > OLKillQLen) orelse (Mem > OLKillMem)) ->
-            set_restart_flag(State),
-            exit({shutdown,{overloaded,Name,QLen,Mem}});
-       true ->
-            ok
-    end.
-
-flush_log_events(Limit) ->
-    process_flag(priority, high),
-    Flushed = flush_log_events(0, Limit),
-    process_flag(priority, normal),
-    Flushed.
-
-flush_log_events(Limit, Limit) ->
-    Limit;
-flush_log_events(N, Limit) ->
-    %% flush log events but leave other events, such as
-    %% filesync, info and change_config, so that these
-    %% have a chance to be processed even under heavy load
-    receive
-        {'$gen_cast',{log,_}} ->
-            flush_log_events(N+1, Limit);
-        {'$gen_call',{Pid,MRef},{log,_}} ->
-            Pid ! {MRef, dropped},
-            flush_log_events(N+1, Limit)
-    after
-        0 -> N
-    end.
+    #{filesync_repeat_interval => ?FILESYNC_REPEAT_INTERVAL}.
 
 set_repeated_filesync(#{filesync_repeat_interval:=FSyncInt} = State)
   when is_integer(FSyncInt) ->
@@ -752,51 +459,5 @@ cancel_repeated_filesync(State) ->
         error ->
             State
     end.
-
-stop_or_restart(Name, {shutdown,Reason={overloaded,_Name,_QLen,_Mem}},
-                #{overload_kill_restart_after := RestartAfter}) ->
-    %% If we're terminating because of an overload situation (see
-    %% kill_if_choked/4), we need to remove the handler and set a
-    %% restart timer. A separate process must perform this in order to
-    %% avoid deadlock.
-    HandlerPid = self(),
-    ConfigResult = logger:get_handler_config(Name),
-    RemoveAndRestart =
-        fun() ->
-                MRef = erlang:monitor(process, HandlerPid),
-                receive
-                    {'DOWN',MRef,_,_,_} ->
-                        ok
-                after 30000 ->
-                        error_notify(Reason),
-                        exit(HandlerPid, kill)
-                end,
-                case ConfigResult of
-                    {ok,#{module:=HMod}=HConfig0} when is_integer(RestartAfter) ->
-                        _ = logger:remove_handler(Name),
-                        HConfig = try HMod:filter_config(HConfig0)
-                                  catch _:_ -> HConfig0
-                                  end,
-                        _ = timer:apply_after(RestartAfter, logger, add_handler,
-                                              [Name,HMod,HConfig]);
-                    {ok,_} ->
-                        _ = logger:remove_handler(Name);
-                    {error,CfgReason} when is_integer(RestartAfter) ->
-                        error_notify({Name,restart_impossible,CfgReason});
-                    {error,_} ->
-                        ok
-                end
-        end,
-    spawn(RemoveAndRestart),
-    ok;
-stop_or_restart(_Name, _Reason, _State) ->
-    ok.
-
-overload_levels_ok(HandlerConfig) ->
-    SMQL = maps:get(sync_mode_qlen, HandlerConfig, ?SYNC_MODE_QLEN),
-    DMQL = maps:get(drop_mode_qlen, HandlerConfig, ?DROP_MODE_QLEN),
-    FQL = maps:get(flush_qlen, HandlerConfig, ?FLUSH_QLEN),
-    (DMQL > 1) andalso (SMQL =< DMQL) andalso (DMQL =< FQL).
-
 error_notify(Term) ->
     ?internal_log(error, Term).
diff --git a/lib/kernel/src/logger_h_common.hrl b/lib/kernel/src/logger_h_common.hrl
index 261b0a6246..004a61d9d9 100644
--- a/lib/kernel/src/logger_h_common.hrl
+++ b/lib/kernel/src/logger_h_common.hrl
@@ -1,50 +1,22 @@
-
-%%%-----------------------------------------------------------------
-%%% Overload protection configuration
-
-%%! *** NOTE *** 
-%%! It's important that:
-%%! SYNC_MODE_QLEN =< DROP_MODE_QLEN =< FLUSH_QLEN
-%%! and that DROP_MODE_QLEN >= 2.
-%%! Otherwise the handler could end up in drop mode with no new
-%%! log requests to process. This would cause all future requests
-%%! to be dropped (no switch to async mode would ever take place).
-
-%% This specifies the message_queue_len value where the log
-%% requests switch from asynchronous casts to synchronous calls.
--define(SYNC_MODE_QLEN, 10).
-%% Above this message_queue_len, log requests will be dropped,
-%% i.e. no log requests get sent to the handler process.
--define(DROP_MODE_QLEN, 200).
-%% Above this message_queue_len, the handler process will flush
-%% its mailbox and only leave this number of messages in it.
--define(FLUSH_QLEN, 1000).
-
-%% Never flush more than this number of messages in one go,
-%% or the handler will be unresponsive for seconds (keep this
-%% number as large as possible or the mailbox could grow large).
--define(FLUSH_MAX_N, 5000).
-
-%% BURST_LIMIT_MAX_COUNT is the max number of log requests allowed
-%% to be written within a BURST_LIMIT_WINDOW_TIME time frame.
--define(BURST_LIMIT_ENABLE, true).
--define(BURST_LIMIT_MAX_COUNT, 500).
--define(BURST_LIMIT_WINDOW_TIME, 1000).
-
-%% This enables/disables the feature to automatically get the
-%% handler terminated if it gets too loaded (and can't keep up).
--define(OVERLOAD_KILL_ENABLE, false).
-%% If the message_queue_len goes above this size even after
-%% flushing has been performed, the handler is terminated.
--define(OVERLOAD_KILL_QLEN, 20000).
-%% If the memory usage exceeds this level
--define(OVERLOAD_KILL_MEM_SIZE, 3000000).
-
-%% This is the default time that the handler will wait before
-%% restarting and accepting new requests. The value 'infinity'
-%% disables restarts.
--define(OVERLOAD_KILL_RESTART_AFTER, 5000).
-%%-define(OVERLOAD_KILL_RESTART_AFTER, infinity).
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 1997-2015. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
 
 %% The handler sends asynchronous write requests to the process
 %% controlling the i/o device, but every once in this interval
@@ -65,12 +37,6 @@
 -define(FILESYNC_REPEAT_INTERVAL, 5000).
 %%-define(FILESYNC_REPEAT_INTERVAL, no_repeat).
 
-%% This is the time after last message received that we think/hope
-%% that the handler has an empty mailbox (no new log request has
-%% come in).
--define(IDLE_DETECT_TIME_MSEC, 100).
--define(IDLE_DETECT_TIME_USEC, 100000).
-
 %% Default disk log option values
 -define(DISK_LOG_TYPE, wrap).
 -define(DISK_LOG_MAX_NO_FILES, 10).
@@ -83,43 +49,6 @@
         list_to_atom(lists:concat([MODULE,"_",Name]))).
 
 %%%-----------------------------------------------------------------
-%%% Overload protection macros
-
--define(timestamp(), erlang:monotonic_time(microsecond)).
-
--define(get_mode(Tid),
-        case ets:lookup(Tid, mode) of
-            [{mode,M}] -> M;
-            _          -> async
-        end).
-
--define(set_mode(Tid, M),
-        begin ets:insert(Tid, {mode,M}), M end).
-
--define(change_mode(Tid, M0, M1),
-        if M0 == M1 ->
-                M0;
-           true ->
-                ets:insert(Tid, {mode,M1}),
-                M1
-        end).
-
--define(min(X1, X2),
-        if X2 == undefined -> X1;
-           X2 < X1 -> X2;
-           true -> X1
-        end).
-
--define(max(X1, X2),
-        if 
-            X2 == undefined -> X1;
-            X2 > X1 -> X2;
-            true -> X1
-        end).
-
--define(diff_time(OS_T1, OS_T0), OS_T1-OS_T0).
-
-%%%-----------------------------------------------------------------
 %%% The test hook macros make it possible to observe and manipulate
 %%% internal handler functionality. When enabled, these macros will
 %%% slow down execution and therefore should not be include in code
@@ -183,7 +112,6 @@
               [{_,ERROR}] -> ERROR
           catch _:_       -> disk_log:sync(LOG) end).
 
-  -define(DEFAULT_CALL_TIMEOUT, 5000).
 
 -else.                                          % DEFAULTS!
   -define(TEST_HOOKS_TAB, undefined).
@@ -196,68 +124,4 @@
   -define(file_datasync(DEVICE), file:datasync(DEVICE)).
   -define(disk_log_write(LOG, MODE, DATA), disk_log_write(LOG, MODE, DATA)).
   -define(disk_log_sync(LOG), disk_log:sync(LOG)).
-  -define(DEFAULT_CALL_TIMEOUT, 10000).
--endif.
-
-%%%-----------------------------------------------------------------
-%%% These macros enable statistics counters in the state of the
-%%% handler which is useful for analysing the overload protection
-%%% behaviour. These counters should not be included in code to be
-%%% officially released (as some counters will grow very large
-%%% over time).
-
-%%-define(SAVE_STATS, true).
--ifdef(SAVE_STATS).
-  -define(merge_with_stats(STATE),
-          STATE#{flushes => 0, flushed => 0, drops => 0,
-                 burst_drops => 0, casts => 0, calls => 0,
-                 max_qlen => 0, max_time => 0}).
-
-  -define(update_max_qlen(QLEN, STATE),
-          begin #{max_qlen := QLEN0} = STATE,
-                STATE#{max_qlen => ?max(QLEN0,QLEN)} end).
-
-  -define(update_calls_or_casts(CALL_OR_CAST, INC, STATE),
-          case CALL_OR_CAST of
-              cast ->
-                  #{casts := CASTS0} = STATE,
-                  STATE#{casts => CASTS0+INC};
-              call ->
-                  #{calls := CALLS0} = STATE,
-                  STATE#{calls => CALLS0+INC}
-          end).
-
-  -define(update_max_time(TIME, STATE),
-          begin #{max_time := TIME0} = STATE,
-                STATE#{max_time => ?max(TIME0,TIME)} end).
-
-  -define(update_other(OTHER, VAR, INCVAL, STATE),
-          begin #{OTHER := VAR} = STATE,
-                STATE#{OTHER => VAR+INCVAL} end).
-          
--else.                                          % DEFAULT!
-  -define(merge_with_stats(STATE), STATE).
-  -define(update_max_qlen(_QLEN, STATE), STATE).
-  -define(update_calls_or_casts(_CALL_OR_CAST, _INC, STATE), STATE).
-  -define(update_max_time(_TIME, STATE), STATE).
-  -define(update_other(_OTHER, _VAR, _INCVAL, STATE), STATE).
--endif.
-
-%%%-----------------------------------------------------------------
-%%% These macros enable callbacks that make it possible to analyse
-%%% the overload protection behaviour from outside the handler
-%%% process (including dropped requests on the client side).
-%%% An external callback module (?OBSERVER_MOD) is required which
-%%% is not part of the kernel application. For this reason, these
-%%% callbacks should not be included in code to be officially released.
-
-%%-define(OBSERVER_MOD, logger_test).
--ifdef(OBSERVER_MOD).
-  -define(start_observation(NAME), ?OBSERVER:start_observation(NAME)).
-  -define(observe(NAME,EVENT), ?OBSERVER:observe(NAME,EVENT)).
-
--else.                                          % DEFAULT!
-  -define(start_observation(_NAME), ok).
-  -define(observe(_NAME,_EVENT), ok).
 -endif.
-%%! <---
diff --git a/lib/kernel/src/logger_internal.hrl b/lib/kernel/src/logger_internal.hrl
index d96a4ac78b..e53922e5d3 100644
--- a/lib/kernel/src/logger_internal.hrl
+++ b/lib/kernel/src/logger_internal.hrl
@@ -19,6 +19,7 @@
 %%
 -include_lib("kernel/include/logger.hrl").
 -define(LOGGER_TABLE,logger).
+-define(PROXY_KEY,'$proxy_config$').
 -define(PRIMARY_KEY,'$primary_config$').
 -define(HANDLER_KEY,'$handler_config$').
 -define(LOGGER_META_KEY,'$logger_metadata$').
@@ -40,12 +41,14 @@
 
 -define(DEFAULT_LOGGER_CALL_TIMEOUT, infinity).
 
--define(LOG_INTERNAL(Level,Report),
+-define(LOG_INTERNAL(Level,Report),?DO_LOG_INTERNAL(Level,[Report])).
+-define(LOG_INTERNAL(Level,Format,Args),?DO_LOG_INTERNAL(Level,[Format,Args])).
+-define(DO_LOG_INTERNAL(Level,Data),
         case logger:allow(Level,?MODULE) of
             true ->
                 %% Spawn this to avoid deadlocks
-                _ = spawn(logger,macro_log,[?LOCATION,Level,Report,
-                                            logger:add_default_metadata(#{})]),
+                _ = spawn(logger,macro_log,[?LOCATION,Level|Data]++
+                              [logger:add_default_metadata(#{})]),
                 ok;
             false ->
                 ok
diff --git a/lib/kernel/src/logger_olp.erl b/lib/kernel/src/logger_olp.erl
new file mode 100644
index 0000000000..8365383fe2
--- /dev/null
+++ b/lib/kernel/src/logger_olp.erl
@@ -0,0 +1,627 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2017-2018. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+-module(logger_olp).
+-behaviour(gen_server).
+
+-include("logger_olp.hrl").
+-include("logger_internal.hrl").
+
+%% API
+-export([start_link/4, load/2, info/1, reset/1, stop/1, restart/1,
+         set_opts/2, get_opts/1, get_default_opts/0, get_pid/1,
+         call/2, cast/2, get_ref/0, get_ref/1]).
+
+%% gen_server and proc_lib callbacks
+-export([init/1, handle_call/3, handle_cast/2, handle_info/2,
+         terminate/2, code_change/3]).
+
+-define(OPT_KEYS,[sync_mode_qlen,
+                  drop_mode_qlen,
+                  flush_qlen,
+                  burst_limit_enable,
+                  burst_limit_max_count,
+                  burst_limit_window_time,
+                  overload_kill_enable,
+                  overload_kill_qlen,
+                  overload_kill_mem_size,
+                  overload_kill_restart_after]).
+
+-export_type([olp_ref/0, options/0]).
+
+-opaque olp_ref() :: {atom(),pid(),ets:tid()}.
+
+-type options() :: logger:olp_config().
+
+%%%-----------------------------------------------------------------
+%%% API
+
+-spec start_link(Name,Module,Args,Options) -> {ok,Pid,Olp} | {error,Reason} when
+      Name :: atom(),
+      Module :: module(),
+      Args :: term(),
+      Options :: options(),
+      Pid :: pid(),
+      Olp :: olp_ref(),
+      Reason :: term().
+start_link(Name,Module,Args,Options0) when is_map(Options0) ->
+    Options = maps:merge(get_default_opts(),Options0),
+    case check_opts(Options) of
+        ok ->
+            proc_lib:start_link(?MODULE,init,[[Name,Module,Args,Options]]);
+        Error ->
+            Error
+    end.
+
+-spec load(Olp, Msg) -> ok when
+      Olp :: olp_ref(),
+      Msg :: term().
+load({_Name,Pid,ModeRef},Msg) ->
+    %% If the process is getting overloaded, the message will be
+    %% synchronous instead of asynchronous (slows down the tempo of a
+    %% process causing much load). If the process is choked, drop mode
+    %% is set and no message is sent.
+    try ?get_mode(ModeRef) of
+        async ->
+            gen_server:cast(Pid, {'$olp_load',Msg});
+        sync ->
+            case call(Pid, {'$olp_load',Msg}) of
+                ok ->
+                    ok;
+                _Other ->
+                    %% dropped or {error,busy}
+                    ?observe(_Name,{dropped,1}),
+                    ok
+            end;
+        drop ->
+            ?observe(_Name,{dropped,1})
+    catch
+        %% if the ETS table doesn't exist (maybe because of a
+        %% process restart), we can only drop the event
+        _:_ -> ?observe(_Name,{dropped,1})
+    end,
+    ok.    
+
+-spec info(Olp) -> map() | {error, busy} when
+      Olp :: atom() | pid() | olp_ref().
+info(Olp) ->
+    call(Olp, info).
+
+-spec reset(Olp) -> ok | {error, busy} when
+      Olp :: atom() | pid() | olp_ref().
+reset(Olp) ->
+    call(Olp, reset).
+
+-spec stop(Olp) -> ok when
+      Olp :: atom() | pid() | olp_ref().
+stop({_Name,Pid,_ModRef}) ->
+    stop(Pid);
+stop(Pid) ->
+    _ = gen_server:call(Pid, stop),
+    ok.
+
+-spec set_opts(Olp, Opts) -> ok | {error,term()} | {error, busy} when
+      Olp :: atom() | pid() | olp_ref(),
+      Opts :: options().
+set_opts(Olp, Opts) ->
+    call(Olp, {set_opts,Opts}).
+
+-spec get_opts(Olp) -> options() | {error, busy} when
+      Olp :: atom() | pid() | olp_ref().
+get_opts(Olp) ->
+    call(Olp, get_opts).
+
+-spec get_default_opts() -> options().
+get_default_opts() ->
+    #{sync_mode_qlen              => ?SYNC_MODE_QLEN,
+      drop_mode_qlen              => ?DROP_MODE_QLEN,
+      flush_qlen                  => ?FLUSH_QLEN,
+      burst_limit_enable          => ?BURST_LIMIT_ENABLE,
+      burst_limit_max_count       => ?BURST_LIMIT_MAX_COUNT,
+      burst_limit_window_time     => ?BURST_LIMIT_WINDOW_TIME,
+      overload_kill_enable        => ?OVERLOAD_KILL_ENABLE,
+      overload_kill_qlen          => ?OVERLOAD_KILL_QLEN,
+      overload_kill_mem_size      => ?OVERLOAD_KILL_MEM_SIZE,
+      overload_kill_restart_after => ?OVERLOAD_KILL_RESTART_AFTER}.
+
+-spec restart(fun(() -> any())) -> ok.
+restart(Fun) ->
+    Result =
+        try Fun()
+        catch C:R:S ->
+                {error,{restart_failed,Fun,C,R,S}}
+        end,
+    ?LOG_INTERNAL(debug,[{logger_olp,restart},
+                         {result,Result}]),
+    ok.
+
+-spec get_ref() -> olp_ref().
+get_ref() ->
+    get(olp_ref).
+
+-spec get_ref(PidOrName) -> olp_ref() | {error, busy} when
+      PidOrName :: pid() | atom().
+get_ref(PidOrName) ->
+    call(PidOrName,get_ref).
+
+-spec get_pid(olp_ref()) -> pid().
+get_pid({_Name,Pid,_ModeRef}) ->
+    Pid.
+
+%%%===================================================================
+%%% gen_server callbacks
+%%%===================================================================
+
+init([Name,Module,Args,Options]) ->
+    register(Name, self()),
+    process_flag(message_queue_data, off_heap),
+
+    ?start_observation(Name),
+
+    try ets:new(Name, [public]) of
+        ModeRef ->
+            OlpRef = {Name,self(),ModeRef},
+            put(olp_ref,OlpRef),
+            try Module:init(Args) of
+                {ok,CBState} ->
+                    ?set_mode(ModeRef, async),
+                    T0 = ?timestamp(),
+                    proc_lib:init_ack({ok,self(),OlpRef}),
+                    %% Storing options in state to avoid copying
+                    %% (sending) the option data with each message
+                    State0 = ?merge_with_stats(
+                                Options#{id => Name,
+                                         idle=> true,
+                                         module => Module,
+                                         mode_ref => ModeRef,
+                                         mode => async,
+                                         last_qlen => 0,
+                                         last_load_ts => T0,
+                                         burst_win_ts => T0,
+                                         burst_msg_count => 0,
+                                         cb_state => CBState}),
+                    State = reset_restart_flag(State0),
+                    gen_server:enter_loop(?MODULE, [], State);
+                Error ->
+                    _ = ets:delete(ModeRef),
+                    unregister(Name),
+                    proc_lib:init_ack(Error)
+            catch
+                _:Error ->
+                    _ = ets:delete(ModeRef),
+                    unregister(Name),
+                    proc_lib:init_ack(Error)
+            end
+    catch
+        _:Error ->
+            unregister(Name),
+            proc_lib:init_ack(Error)
+    end.
+
+%% This is the synchronous load event.
+handle_call({'$olp_load', Msg}, _From, State) ->
+    {Result,State1} = do_load(Msg, call, State#{idle=>false}),
+    %% Result == ok | dropped
+    reply_return(Result,State1);
+
+handle_call(get_ref,_From,#{id:=Name,mode_ref:=ModeRef}=State) ->
+    reply_return({Name,self(),ModeRef},State);
+
+handle_call({set_opts,Opts0},_From,State) ->
+    Opts = maps:merge(maps:with(?OPT_KEYS,State),Opts0),
+    case check_opts(Opts) of
+        ok ->
+            reply_return(ok, maps:merge(State,Opts));
+        Error ->
+            reply_return(Error, State)
+    end;
+
+handle_call(get_opts,_From,State) ->
+    reply_return(maps:with(?OPT_KEYS,State), State);
+
+handle_call(info, _From, State) ->
+    reply_return(State, State);
+
+handle_call(reset, _From, #{module:=Module,cb_state:=CBState}=State) ->
+    State1 = ?merge_with_stats(State),
+    CBState1 = try_callback_call(Module,reset_state,[CBState],CBState),
+    reply_return(ok, State1#{idle => true,
+                             last_qlen => 0,
+                             last_load_ts => ?timestamp(),
+                             cb_state => CBState1});
+
+handle_call(stop, _From, State) ->
+    {stop, {shutdown,stopped}, ok, State};
+
+handle_call(Msg, From, #{module:=Module,cb_state:=CBState}=State) ->
+    case try_callback_call(Module,handle_call,[Msg, From, CBState]) of
+        {reply,Reply,CBState1} ->
+            reply_return(Reply,State#{cb_state=>CBState1});
+        {noreply,CBState1} ->
+            noreply_return(State#{cb_state=>CBState1});
+        {stop, Reason, Reply, CBState1} ->
+            {stop, Reason, Reply, State#{cb_state=>CBState1}};
+        {stop, Reason, CBState1} ->
+            {stop, Reason, State#{cb_state=>CBState1}}
+    end.
+
+%% This is the asynchronous load event.
+handle_cast({'$olp_load', Msg}, State) ->
+    {_Result,State1} = do_load(Msg, cast, State#{idle=>false}),
+    noreply_return(State1);
+
+handle_cast(Msg, #{module:=Module, cb_state:=CBState} = State) ->
+    case try_callback_call(Module,handle_cast,[Msg, CBState]) of
+        {noreply,CBState1} ->
+            noreply_return(State#{cb_state=>CBState1});
+        {stop, Reason, CBState1} ->
+            {stop, Reason, State#{cb_state=>CBState1}}
+    end.
+
+handle_info(timeout, #{mode_ref:=_ModeRef, mode:=Mode} = State) ->
+    State1 = notify(idle,State),
+    State2 = maybe_notify_mode_change(async,State1),
+    {noreply, State2#{idle => true,
+                      mode => ?change_mode(_ModeRef, Mode, async),
+                      burst_msg_count => 0}};
+handle_info(Msg, #{module := Module, cb_state := CBState} = State) ->
+    case try_callback_call(Module,handle_info,[Msg, CBState]) of
+        {noreply,CBState1} ->
+            noreply_return(State#{cb_state=>CBState1});
+        {stop, Reason, CBState1} ->
+            {stop, Reason, State#{cb_state=>CBState1}};
+        {load,CBState1} ->
+            {_,State1} = do_load(Msg, cast, State#{idle=>false,
+                                                   cb_state=>CBState1}),
+            noreply_return(State1)
+    end.
+
+terminate({shutdown,{overloaded,_QLen,_Mem}},
+          #{id:=Name, module := Module, cb_state := CBState,
+            overload_kill_restart_after := RestartAfter} = State) ->
+    %% We're terminating because of an overload situation (see
+    %% kill_if_choked/3).
+    unregister(Name), %%!!!! to avoid error printout of callback crashed on stop
+    case try_callback_call(Module,terminate,[overloaded,CBState],ok) of
+        {ok,Fun} when is_function(Fun,0), is_integer(RestartAfter) ->
+            set_restart_flag(State),
+            _ = timer:apply_after(RestartAfter,?MODULE,restart,[Fun]),
+            ok;
+        _ ->
+            ok
+    end;
+terminate(Reason, #{id:=Name, module:=Module, cb_state:=CBState}) ->
+    _ = try_callback_call(Module,terminate,[Reason,CBState],ok),
+    unregister(Name),
+    ok.
+
+code_change(_OldVsn, State, _Extra) ->
+    {ok, State}.
+
+
+%%%-----------------------------------------------------------------
+%%% Internal functions
+-spec call(Olp, term()) -> term() | {error,busy} when
+      Olp :: atom() | pid() | olp_ref().
+call({_Name, Pid, _ModeRef},Msg) ->
+    call(Pid, Msg);
+call(Server, Msg) ->
+    try
+        gen_server:call(Server, Msg)
+    catch
+        _:{timeout,_} -> {error,busy}
+    end.
+
+-spec cast(olp_ref(),term()) -> ok.
+cast({_Name, Pid, _ModeRef},Msg) ->
+    gen_server:cast(Pid, Msg).
+
+%% check for overload between every event (and set Mode to async,
+%% sync or drop accordingly), but never flush the whole mailbox
+%% before LogWindowSize events have been handled
+do_load(Msg, CallOrCast, State) ->
+    T1 = ?timestamp(),
+    State1 = ?update_time(T1,State),
+
+    %% check if the process is getting overloaded, or if it's
+    %% recovering from overload (the check must be done for each
+    %% event to react quickly to large bursts of events and
+    %% to ensure that the handler can never end up in drop mode
+    %% with an empty mailbox, which would stop operation)
+    {Mode1,QLen,Mem,State2} = check_load(State1),
+
+    %% kill the handler if it can't keep up with the load
+    kill_if_choked(QLen, Mem, State2),
+
+    if Mode1 == flush ->
+            flush(T1, State2);
+       true ->
+            handle_load(Mode1, T1, Msg, CallOrCast, State2)
+    end.
+
+%% this function is called by do_load/3 after an overload check
+%% has been performed, where QLen > FlushQLen
+flush(T1, State=#{id := _Name, mode := Mode, last_load_ts := _T0, mode_ref := ModeRef}) ->
+    %% flush load messages in the mailbox (a limited number in order
+    %% to not cause long delays)
+    NewFlushed = flush_load(?FLUSH_MAX_N),
+
+    %% write info in log about flushed messages
+    State1=notify({flushed,NewFlushed},State),
+
+    %% because of the receive loop when flushing messages, the
+    %% handler will be scheduled out often and the mailbox could
+    %% grow very large, so we'd better check the queue again here
+    {_,QLen1} = process_info(self(), message_queue_len),
+    ?observe(_Name,{max_qlen,QLen1}),
+
+    %% Add 1 for the current log event
+    ?observe(_Name,{flushed,NewFlushed+1}),
+
+    State2 = ?update_max_time(?diff_time(T1,_T0),State1),
+    State3 = ?update_max_qlen(QLen1,State2),
+    State4 = maybe_notify_mode_change(async,State3),
+    {dropped,?update_other(flushed,FLUSHED,NewFlushed,
+                           State4#{mode => ?change_mode(ModeRef,Mode,async),
+                                   last_qlen => QLen1,
+                                   last_load_ts => T1})}.
+
+%% this function is called to actually handle the message
+handle_load(Mode, T1, Msg, _CallOrCast,
+      State = #{id := _Name,
+                module := Module,
+                cb_state := CBState,
+                last_qlen := LastQLen,
+                last_load_ts := _T0}) ->
+    %% check if we need to limit the number of writes
+    %% during a burst of log events
+    {DoWrite,State1} = limit_burst(State),
+
+    {Result,LastQLen1,CBState1} =
+        if DoWrite ->
+                ?observe(_Name,{_CallOrCast,1}),
+                CBS = try_callback_call(Module,handle_load,[Msg,CBState]),
+                {ok,element(2, process_info(self(), message_queue_len)),CBS};
+           true ->
+                ?observe(_Name,{flushed,1}),
+                {dropped,LastQLen,CBState}
+        end,
+    State2 = State1#{cb_state=>CBState1},
+
+    State3 = State2#{mode => Mode},
+    State4 = ?update_calls_or_casts(_CallOrCast,1,State3),
+    State5 = ?update_max_qlen(LastQLen1,State4),
+    State6 =
+        ?update_max_time(?diff_time(T1,_T0),
+                         State5#{last_qlen := LastQLen1,
+                                 last_load_ts => T1}),
+    State7 = case Result of
+                 ok ->
+                     S = ?update_freq(T1,State6),
+                     ?update_other(writes,WRITES,1,S);
+                 _ ->
+                     State6
+             end,
+    {Result,State7}.
+
+
+%%%-----------------------------------------------------------------
+%%% Check that the options are valid
+check_opts(Options) when is_map(Options) ->
+    case do_check_opts(maps:to_list(Options)) of
+        ok ->
+            case overload_levels_ok(Options) of
+                true ->
+                    ok;
+                false ->
+                    Faulty = maps:with([sync_mode_qlen,
+                                        drop_mode_qlen,
+                                        flush_qlen],Options),
+                    {error,{invalid_olp_levels,Faulty}}
+            end;
+        {error,Key,Value} ->
+            {error,{invalid_olp_config,#{Key=>Value}}}
+    end.
+
+do_check_opts([{sync_mode_qlen,N}|Options]) when is_integer(N) ->
+    do_check_opts(Options);
+do_check_opts([{drop_mode_qlen,N}|Options]) when is_integer(N) ->
+    do_check_opts(Options);
+do_check_opts([{flush_qlen,N}|Options]) when is_integer(N) ->
+    do_check_opts(Options);
+do_check_opts([{burst_limit_enable,Bool}|Options]) when is_boolean(Bool) ->
+    do_check_opts(Options);
+do_check_opts([{burst_limit_max_count,N}|Options]) when is_integer(N) ->
+    do_check_opts(Options);
+do_check_opts([{burst_limit_window_time,N}|Options]) when is_integer(N) ->
+    do_check_opts(Options);
+do_check_opts([{overload_kill_enable,Bool}|Options]) when is_boolean(Bool) ->
+    do_check_opts(Options);
+do_check_opts([{overload_kill_qlen,N}|Options]) when is_integer(N) ->
+    do_check_opts(Options);
+do_check_opts([{overload_kill_mem_size,N}|Options]) when is_integer(N) ->
+    do_check_opts(Options);
+do_check_opts([{overload_kill_restart_after,NorA}|Options])
+  when is_integer(NorA); NorA == infinity ->
+    do_check_opts(Options);
+do_check_opts([{Key,Value}|_]) ->
+    {error,Key,Value};
+do_check_opts([]) ->
+    ok.
+
+set_restart_flag(#{id := Name, module := Module}) ->
+    Flag = list_to_atom(lists:concat([Module,"_",Name,"_restarting"])),
+    spawn(fun() ->
+                  register(Flag, self()),
+                  timer:sleep(infinity)
+          end),
+    ok.
+
+reset_restart_flag(#{id := Name, module := Module} = State) ->
+    Flag = list_to_atom(lists:concat([Module,"_",Name,"_restarting"])),
+    case whereis(Flag) of
+        undefined ->
+            State;
+        Pid ->
+            exit(Pid, kill),
+            notify(restart,State)
+    end.
+
+check_load(State = #{id:=_Name, mode_ref := ModeRef, mode := Mode,
+                     sync_mode_qlen := SyncModeQLen,
+                     drop_mode_qlen := DropModeQLen,
+                     flush_qlen := FlushQLen}) ->
+    {_,Mem} = process_info(self(), memory),
+    ?observe(_Name,{max_mem,Mem}),
+    {_,QLen} = process_info(self(), message_queue_len),
+    ?observe(_Name,{max_qlen,QLen}),
+    %% When the handler process gets scheduled in, it's impossible
+    %% to predict the QLen. We could jump "up" arbitrarily from say
+    %% async to sync, async to drop, sync to flush, etc. However, when
+    %% the handler process manages the log events (without flushing),
+    %% one after the other, we will move "down" from drop to sync and
+    %% from sync to async. This way we don't risk getting stuck in
+    %% drop or sync mode with an empty mailbox.
+    {Mode1,_NewDrops,_NewFlushes} =
+        if
+            QLen >= FlushQLen ->
+                {flush, 0,1};
+            QLen >= DropModeQLen ->
+                %% Note that drop mode will force load messages to
+                %% be dropped on the client side (never sent to
+                %% the olp process).
+                IncDrops = if Mode == drop -> 0; true -> 1 end,
+                {?change_mode(ModeRef, Mode, drop), IncDrops,0};
+            QLen >= SyncModeQLen ->
+                {?change_mode(ModeRef, Mode, sync), 0,0};
+            true ->
+                {?change_mode(ModeRef, Mode, async), 0,0}
+        end,
+    State1 = ?update_other(drops,DROPS,_NewDrops,State),
+    State2 = ?update_max_qlen(QLen,State1),
+    State3 = ?update_max_mem(Mem,State2),
+    State4 = maybe_notify_mode_change(Mode1,State3),
+    {Mode1, QLen, Mem,
+     ?update_other(flushes,FLUSHES,_NewFlushes,
+                   State4#{last_qlen => QLen})}.
+
+limit_burst(#{burst_limit_enable := false}=State) ->
+     {true,State};
+limit_burst(#{burst_win_ts := BurstWinT0,
+              burst_msg_count := BurstMsgCount,
+              burst_limit_window_time := BurstLimitWinTime,
+              burst_limit_max_count := BurstLimitMaxCnt} = State) ->
+    if (BurstMsgCount >= BurstLimitMaxCnt) -> 
+            %% the limit for allowed messages has been reached
+            BurstWinT1 = ?timestamp(),
+            case ?diff_time(BurstWinT1,BurstWinT0) of
+                BurstCheckTime when BurstCheckTime < (BurstLimitWinTime*1000) ->
+                    %% we're still within the burst time frame
+                    {false,?update_other(burst_drops,BURSTS,1,State)};
+                _BurstCheckTime ->
+                    %% burst time frame passed, reset counters
+                    {true,State#{burst_win_ts => BurstWinT1,
+                                 burst_msg_count => 0}}
+            end;
+       true ->
+            %% the limit for allowed messages not yet reached
+            {true,State#{burst_win_ts => BurstWinT0,
+                         burst_msg_count => BurstMsgCount+1}}
+    end.
+
+kill_if_choked(QLen, Mem, #{overload_kill_enable   := KillIfOL,
+                            overload_kill_qlen     := OLKillQLen,
+                            overload_kill_mem_size := OLKillMem}) ->
+    if KillIfOL andalso
+       ((QLen > OLKillQLen) orelse (Mem > OLKillMem)) ->
+            exit({shutdown,{overloaded,QLen,Mem}});
+       true ->
+            ok
+    end.
+
+flush_load(Limit) ->
+    process_flag(priority, high),
+    Flushed = flush_load(0, Limit),
+    process_flag(priority, normal),
+    Flushed.
+
+flush_load(Limit, Limit) ->
+    Limit;
+flush_load(N, Limit) ->
+    %% flush log events but leave other events, such as info, reset
+    %% and stop, so that these have a chance to be processed even
+    %% under heavy load
+    receive
+        {'$gen_cast',{'$olp_load',_}} ->
+            flush_load(N+1, Limit);
+        {'$gen_call',{Pid,MRef},{'$olp_load',_}} ->
+            Pid ! {MRef, dropped},
+            flush_load(N+1, Limit);
+        {log,_,_,_,_} ->
+            flush_load(N+1, Limit);
+        {log,_,_,_} ->
+            flush_load(N+1, Limit)            
+    after
+        0 -> N
+    end.
+
+overload_levels_ok(Options) ->
+    SMQL = maps:get(sync_mode_qlen, Options, ?SYNC_MODE_QLEN),
+    DMQL = maps:get(drop_mode_qlen, Options, ?DROP_MODE_QLEN),
+    FQL = maps:get(flush_qlen, Options, ?FLUSH_QLEN),
+    (DMQL > 1) andalso (SMQL =< DMQL) andalso (DMQL =< FQL).
+
+maybe_notify_mode_change(drop,#{mode:=Mode0}=State)
+  when Mode0=/=drop ->
+    notify({mode_change,Mode0,drop},State);
+maybe_notify_mode_change(Mode1,#{mode:=drop}=State)
+  when Mode1==async; Mode1==sync ->
+    notify({mode_change,drop,Mode1},State);
+maybe_notify_mode_change(_,State) ->
+    State.
+
+notify(Note,#{module:=Module,cb_state:=CBState}=State) ->
+    CBState1 = try_callback_call(Module,notify,[Note,CBState],CBState),
+    State#{cb_state=>CBState1}.
+
+try_callback_call(Module, Function, Args) ->
+    try_callback_call(Module, Function, Args, '$no_default_return').
+
+try_callback_call(Module, Function, Args, DefRet) ->
+    try apply(Module, Function, Args)
+    catch
+        throw:R -> R;
+        error:undef:S when DefRet=/='$no_default_return' ->
+            case S of
+                [{Module,Function,Args,_}|_] ->
+                    DefRet;
+                _ ->
+                    erlang:raise(error,undef,S)
+            end
+    end.
+
+noreply_return(#{idle:=true}=State) ->
+    {noreply,State};
+noreply_return(#{idle:=false}=State) ->
+    {noreply,State,?IDLE_DETECT_TIME}.
+
+reply_return(Reply,#{idle:=true}=State) ->
+    {reply,Reply,State};
+reply_return(Reply,#{idle:=false}=State) ->
+    {reply,Reply,State,?IDLE_DETECT_TIME}.
diff --git a/lib/kernel/src/logger_olp.hrl b/lib/kernel/src/logger_olp.hrl
new file mode 100644
index 0000000000..d68b5c048d
--- /dev/null
+++ b/lib/kernel/src/logger_olp.hrl
@@ -0,0 +1,185 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 1997-2015. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+%%%-----------------------------------------------------------------
+%%% Overload protection configuration
+
+%%! *** NOTE *** 
+%%! It's important that:
+%%! SYNC_MODE_QLEN =< DROP_MODE_QLEN =< FLUSH_QLEN
+%%! and that DROP_MODE_QLEN >= 2.
+%%! Otherwise the process could end up in drop mode with no new
+%%! log requests to process. This would cause all future requests
+%%! to be dropped (no switch to async mode would ever take place).
+
+%% This specifies the message_queue_len value where the log
+%% requests switch from asynchronous casts to synchronous calls.
+-define(SYNC_MODE_QLEN, 10).
+%% Above this message_queue_len, log requests will be dropped,
+%% i.e. no log requests get sent to the process.
+-define(DROP_MODE_QLEN, 200).
+%% Above this message_queue_len, the process will flush its mailbox
+%% and only leave this number of messages in it.
+-define(FLUSH_QLEN, 1000).
+
+%% Never flush more than this number of messages in one go, or the
+%% process will be unresponsive for seconds (keep this number as large
+%% as possible or the mailbox could grow large).
+-define(FLUSH_MAX_N, 5000).
+
+%% BURST_LIMIT_MAX_COUNT is the max number of log requests allowed
+%% to be written within a BURST_LIMIT_WINDOW_TIME time frame.
+-define(BURST_LIMIT_ENABLE, true).
+-define(BURST_LIMIT_MAX_COUNT, 500).
+-define(BURST_LIMIT_WINDOW_TIME, 1000).
+
+%% This enables/disables the feature to automatically terminate the
+%% process if it gets too loaded (and can't keep up).
+-define(OVERLOAD_KILL_ENABLE, false).
+%% If the message_queue_len goes above this size even after
+%% flushing has been performed, the process is terminated.
+-define(OVERLOAD_KILL_QLEN, 20000).
+%% If the memory usage exceeds this level, the process is terminated.
+-define(OVERLOAD_KILL_MEM_SIZE, 3000000).
+
+%% This is the default time to wait before restarting and accepting
+%% new requests. The value 'infinity' disables restarts.
+-define(OVERLOAD_KILL_RESTART_AFTER, 5000).
+
+%% This is the time in milliseconds after last load message received
+%% that we notify the callback about being idle.
+-define(IDLE_DETECT_TIME, 100).
+
+%%%-----------------------------------------------------------------
+%%% Overload protection macros
+
+-define(timestamp(), erlang:monotonic_time(microsecond)).
+
+-define(get_mode(Tid),
+        case ets:lookup(Tid, mode) of
+            [{mode,M}] -> M;
+            _          -> async
+        end).
+
+-define(set_mode(Tid, M),
+        begin ets:insert(Tid, {mode,M}), M end).
+
+-define(change_mode(Tid, M0, M1),
+        if M0 == M1 ->
+                M0;
+           true ->
+                ets:insert(Tid, {mode,M1}),
+                M1
+        end).
+
+-define(max(X1, X2),
+        if 
+            X2 == undefined -> X1;
+            X2 > X1 -> X2;
+            true -> X1
+        end).
+
+-define(diff_time(OS_T1, OS_T0), OS_T1-OS_T0).
+
+%%%-----------------------------------------------------------------
+%%% These macros enable statistics counters in the state of the
+%%% process, which is useful for analysing the overload protection
+%%% behaviour. These counters should not be included in code to be
+%%% officially released (as some counters will grow very large over
+%%% time).
+
+%% -define(SAVE_STATS, true).
+-ifdef(SAVE_STATS).
+  -define(merge_with_stats(STATE),
+          begin
+              TIME = ?timestamp(),
+              STATE#{start => TIME, time => {TIME,0},
+                     flushes => 0, flushed => 0, drops => 0,
+                     burst_drops => 0, casts => 0, calls => 0,
+                     writes => 0, max_qlen => 0, max_time => 0,
+                     max_mem => 0, freq => {TIME,0,0}} end).
+
+  -define(update_max_qlen(QLEN, STATE),
+          begin #{max_qlen := QLEN0} = STATE,
+                STATE#{max_qlen => ?max(QLEN0,QLEN)} end).
+
+  -define(update_max_mem(MEM, STATE),
+          begin #{max_mem := MEM0} = STATE,
+                STATE#{max_mem => ?max(MEM0,MEM)} end).
+
+  -define(update_calls_or_casts(CALL_OR_CAST, INC, STATE),
+          case CALL_OR_CAST of
+              cast ->
+                  #{casts := CASTS0} = STATE,
+                  STATE#{casts => CASTS0+INC};
+              call ->
+                  #{calls := CALLS0} = STATE,
+                  STATE#{calls => CALLS0+INC}
+          end).
+
+  -define(update_max_time(TIME, STATE),
+          begin #{max_time := TIME0} = STATE,
+                STATE#{max_time => ?max(TIME0,TIME)} end).
+
+  -define(update_other(OTHER, VAR, INCVAL, STATE),
+          begin #{OTHER := VAR} = STATE,
+                STATE#{OTHER => VAR+INCVAL} end).
+
+  -define(update_freq(TIME,STATE),
+          begin
+              case STATE of
+                  #{freq := {START, 49, _}} ->
+                      STATE#{freq => {TIME, 0, trunc(1000000*50/(?diff_time(TIME,START)))}};
+                  #{freq := {START, N, FREQ}} ->
+                      STATE#{freq => {START, N+1, FREQ}}
+              end end).
+
+  -define(update_time(TIME,STATE),
+          begin #{start := START} = STATE,
+                STATE#{time => {TIME,trunc((?diff_time(TIME,START))/1000000)}} end).
+
+-else.                                          % DEFAULT!
+  -define(merge_with_stats(STATE), STATE).
+  -define(update_max_qlen(_QLEN, STATE), STATE).
+  -define(update_max_mem(_MEM, STATE), STATE).
+  -define(update_calls_or_casts(_CALL_OR_CAST, _INC, STATE), STATE).
+  -define(update_max_time(_TIME, STATE), STATE).
+  -define(update_other(_OTHER, _VAR, _INCVAL, STATE), STATE).
+  -define(update_freq(_TIME, STATE), STATE).
+  -define(update_time(_TIME, STATE), STATE).
+-endif.
+
+%%%-----------------------------------------------------------------
+%%% These macros enable callbacks that make it possible to analyse the
+%%% overload protection behaviour from outside the process (including
+%%% dropped requests on the client side). An external callback module
+%%% (?OBSERVER_MOD) is required which is not part of the kernel
+%%% application. For this reason, these callbacks should not be
+%%% included in code to be officially released.
+
+%%-define(OBSERVER_MOD, logger_test).
+-ifdef(OBSERVER_MOD).
+  -define(start_observation(NAME), ?OBSERVER:start_observation(NAME)).
+  -define(observe(NAME,EVENT), ?OBSERVER:observe(NAME,EVENT)).
+
+-else.                                          % DEFAULT!
+  -define(start_observation(_NAME), ok).
+  -define(observe(_NAME,_EVENT), ok).
+-endif.
diff --git a/lib/kernel/src/logger_proxy.erl b/lib/kernel/src/logger_proxy.erl
new file mode 100644
index 0000000000..24b293805c
--- /dev/null
+++ b/lib/kernel/src/logger_proxy.erl
@@ -0,0 +1,165 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2017-2018. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+-module(logger_proxy).
+
+%% API
+-export([start_link/0, restart/0, log/1, child_spec/0, get_default_config/0]).
+
+%% logger_olp callbacks
+-export([init/1, handle_load/2, handle_info/2, terminate/2,
+         notify/2]).
+
+-include("logger_internal.hrl").
+
+-define(SERVER,?MODULE).
+
+%%%-----------------------------------------------------------------
+%%% API
+-spec log(RemoteLog) -> ok when
+      RemoteLog :: {remote,node(),LogEvent},
+      LogEvent :: {log,Level,Format,Args,Meta} |
+                  {log,Level,StringOrReport,Meta},
+      Level :: logger:level(),
+      Format :: io:format(),
+      Args :: list(term()),
+      StringOrReport :: unicode:chardata() | logger:report(),
+      Meta :: logger:metadata().
+log(RemoteLog) ->
+    Olp = persistent_term:get(?MODULE),
+    case logger_olp:get_pid(Olp) =:= self() of
+        true ->
+            %% This happens when the log event comes from the
+            %% emulator, and the group leader is on a remote node.
+            _ = handle_load(RemoteLog, no_state),
+            ok;
+        false ->
+            logger_olp:load(Olp, RemoteLog)
+    end.
+
+%% Called by supervisor
+-spec start_link() -> {ok,pid(),logger_olp:olp_ref()} | {error,term()}.
+start_link() ->
+    %% Notice that sync_mode is only used when logging to remote node,
+    %% i.e. when the log/2 API function is called.
+    %%
+    %% When receiving log events from the emulator or from a remote
+    %% node, the log event is sent as a message to this process, and
+    %% thus received directly in handle_info/2. This means that the
+    %% mode (async/sync/drop) is not read before the message is
+    %% sent. Thus sync mode is never entered, and drop mode is
+    %% implemented by setting the system_logger flag to undefined (see
+    %% notify/2)
+    %%
+    %% Burst limit is disabled, since this is only a proxy and we
+    %% don't want to limit bursts twice (here and in the handler).
+    logger_olp:start_link(?SERVER,?MODULE,[],logger:get_proxy_config()).
+
+%% Fun used for restarting this process after it has been killed due
+%% to overload (must set overload_kill_enable=>true in opts)
+restart() ->
+    case supervisor:start_child(logger_sup, child_spec()) of
+        {ok,_Pid,Olp} ->
+            {ok,Olp};
+        {error,{Reason,Ch}} when is_tuple(Ch), element(1,Ch)==child ->
+            {error,Reason};
+        Error ->
+            Error
+    end.
+
+%% Called internally and by logger_sup
+child_spec() ->
+    Name = ?SERVER,
+    #{id       => Name,
+      start    => {?MODULE, start_link, []},
+      restart  => temporary,
+      shutdown => 2000,
+      type     => worker,
+      modules  => [?MODULE]}.
+
+get_default_config() ->
+    OlpDefault = logger_olp:get_default_opts(),
+    OlpDefault#{sync_mode_qlen=>500,
+                drop_mode_qlen=>1000,
+                flush_qlen=>5000,
+                burst_limit_enable=>false}.
+
+%%%===================================================================
+%%% gen_server callbacks
+%%%===================================================================
+
+init([]) ->
+    process_flag(trap_exit, true),
+    _ = erlang:system_flag(system_logger,self()),
+    persistent_term:put(?MODULE,logger_olp:get_ref()),
+    {ok,no_state}.
+
+%% Log event to send to the node where the group leader of it's client resides
+handle_load({remote,Node,Log},State) ->
+    %% If the connection is overloaded (send_nosuspend returns false),
+    %% we drop the message.
+    _ = erlang:send_nosuspend({?SERVER,Node},Log),
+    State;
+%% Log event to log on this node
+handle_load({log,Level,Format,Args,Meta},State) ->
+    try_log([Level,Format,Args,Meta]),
+    State;
+handle_load({log,Level,Report,Meta},State) ->
+    try_log([Level,Report,Meta]),
+    State.
+
+%% Log event sent to this process e.g. from the emulator - it is really load
+handle_info(Log,State) when is_tuple(Log), element(1,Log)==log ->
+    {load,State}.
+
+terminate(overloaded, _State) ->
+    _ = erlang:system_flag(system_logger,undefined),
+    {ok,fun ?MODULE:restart/0};
+terminate(_Reason, _State) ->
+    _ = erlang:system_flag(system_logger,whereis(logger)),
+    ok.
+
+notify({mode_change,Mode0,Mode1},State) ->
+    _ = if Mode1=:=drop -> % entering drop mode
+                erlang:system_flag(system_logger,undefined);
+           Mode0=:=drop -> % leaving drop mode
+                erlang:system_flag(system_logger,self());
+           true ->
+                ok
+        end,
+    ?LOG_INTERNAL(notice,"~w switched from ~w to ~w mode",[?MODULE,Mode0,Mode1]),
+    State;
+notify({flushed,Flushed},State) ->
+    ?LOG_INTERNAL(notice, "~w flushed ~w log events",[?MODULE,Flushed]),
+    State;
+notify(restart,State) ->
+    ?LOG_INTERNAL(notice, "~w restarted", [?MODULE]),
+    State;
+notify(_Note,State) ->
+    State.
+
+%%%-----------------------------------------------------------------
+%%% Internal functions
+try_log(Args) ->
+    try apply(logger,log,Args)
+    catch C:R:S ->
+            ?LOG_INTERNAL(debug,[{?MODULE,log_failed},
+                                 {log,Args},
+                                 {reason,{C,R,S}}])
+    end.
diff --git a/lib/kernel/src/logger_server.erl b/lib/kernel/src/logger_server.erl
index b7735dbcf7..722246e82c 100644
--- a/lib/kernel/src/logger_server.erl
+++ b/lib/kernel/src/logger_server.erl
@@ -22,8 +22,7 @@
 -behaviour(gen_server).
 
 %% API
--export([start_link/0,
-         add_handler/3, remove_handler/1,
+-export([start_link/0, add_handler/3, remove_handler/1,
          add_filter/2, remove_filter/2,
          set_module_level/2, unset_module_level/0,
          unset_module_level/1, cache_module_level/1,
@@ -43,7 +42,7 @@
 -define(SERVER, logger).
 -define(LOGGER_SERVER_TAG, '$logger_cb_process').
 
--record(state, {tid, async_req, async_req_queue}).
+-record(state, {tid, async_req, async_req_queue, remote_logger}).
 
 %%%===================================================================
 %%% API
@@ -155,6 +154,8 @@ init([]) ->
     process_flag(trap_exit, true),
     put(?LOGGER_SERVER_TAG,true),
     Tid = logger_config:new(?LOGGER_TABLE),
+    %% Store initial proxy config. logger_proxy reads config from here at startup.
+    logger_config:create(Tid,proxy,logger_proxy:get_default_config()),
     PrimaryConfig = maps:merge(default_config(primary),
                               #{handlers=>[simple]}),
     logger_config:create(Tid,primary,PrimaryConfig),
@@ -221,6 +222,24 @@ handle_call({add_filter,Id,Filter}, _From,#state{tid=Tid}=State) ->
 handle_call({remove_filter,Id,FilterId}, _From, #state{tid=Tid}=State) ->
     Reply = do_remove_filter(Tid,Id,FilterId),
     {reply,Reply,State};
+handle_call({change_config,SetOrUpd,proxy,Config0},_From,#state{tid=Tid}=State) ->
+    Default =
+        case SetOrUpd of
+            set ->
+                logger_proxy:get_default_config();
+            update ->
+                {ok,OldConfig} = logger_config:get(Tid,proxy),
+                OldConfig
+        end,
+    Config = maps:merge(Default,Config0),
+    Reply =
+        case logger_olp:set_opts(logger_proxy,Config) of
+            ok ->
+                logger_config:set(Tid,proxy,Config);
+            Error ->
+                Error
+        end,
+    {reply,Reply,State};
 handle_call({change_config,SetOrUpd,primary,Config0}, _From,
             #state{tid=Tid}=State) ->
     {ok,#{handlers:=Handlers}=OldConfig} = logger_config:get(Tid,primary),
@@ -357,7 +376,7 @@ terminate(_Reason, _State) ->
 %%%===================================================================
 %%% Internal functions
 %%%===================================================================
-call(Request) ->
+call(Request) when is_tuple(Request) ->
     Action = element(1,Request),
     case get(?LOGGER_SERVER_TAG) of
         true when
@@ -369,6 +388,7 @@ call(Request) ->
             gen_server:call(?SERVER,Request,?DEFAULT_LOGGER_CALL_TIMEOUT)
     end.
 
+
 do_add_filter(Tid,Id,{FId,_} = Filter) ->
     case logger_config:get(Tid,Id) of
         {ok,Config} ->
@@ -413,11 +433,13 @@ default_config(Id,Module) ->
 sanity_check(Owner,Key,Value) ->
     sanity_check_1(Owner,[{Key,Value}]).
 
-sanity_check(HandlerId,Config) when is_map(Config) ->
-    sanity_check_1(HandlerId,maps:to_list(Config));
+sanity_check(Owner,Config) when is_map(Config) ->
+    sanity_check_1(Owner,maps:to_list(Config));
 sanity_check(_,Config) ->
     {error,{invalid_config,Config}}.
 
+sanity_check_1(proxy,_Config) ->
+    ok; % Details are checked by logger_olp:set_opts/2
 sanity_check_1(Owner,Config) when is_list(Config) ->
     try
         Type = get_type(Owner),
diff --git a/lib/kernel/src/logger_simple_h.erl b/lib/kernel/src/logger_simple_h.erl
index fe181722f3..a0d51dba25 100644
--- a/lib/kernel/src/logger_simple_h.erl
+++ b/lib/kernel/src/logger_simple_h.erl
@@ -69,7 +69,7 @@ log(#{msg:=_,meta:=#{time:=_}}=Log,_Config) ->
                 do_log(
                   #{level=>error,
                     msg=>{report,{error,simple_handler_process_dead}},
-                    meta=>#{time=>erlang:system_time(microsecond)}}),
+                    meta=>#{time=>logger:timestamp()}}),
                 do_log(Log);
             _ ->
                 ?MODULE ! {log,Log}
@@ -129,7 +129,7 @@ drop_msg(0) ->
 drop_msg(N) ->
     [#{level=>info,
        msg=>{"Simple handler buffer full, dropped ~w messages",[N]},
-       meta=>#{time=>erlang:system_time(microsecond)}}].
+       meta=>#{time=>logger:timestamp()}}].
 
 %%%-----------------------------------------------------------------
 %%% Internal
diff --git a/lib/kernel/src/logger_std_h.erl b/lib/kernel/src/logger_std_h.erl
index 63d1dbaba2..c8f1acfca4 100644
--- a/lib/kernel/src/logger_std_h.erl
+++ b/lib/kernel/src/logger_std_h.erl
@@ -26,16 +26,18 @@
 -include_lib("kernel/include/file.hrl").
 
 %% API
--export([info/1, filesync/1, reset/1]).
+-export([filesync/1]).
 
 %% logger_h_common callbacks
--export([init/2, check_config/4, reset_state/2,
+-export([init/2, check_config/4, config_changed/3, reset_state/2,
          filesync/3, write/4, handle_info/3, terminate/3]).
 
 %% logger callbacks
 -export([log/2, adding_handler/1, removing_handler/1, changing_config/3,
          filter_config/1]).
 
+-define(DEFAULT_CALL_TIMEOUT, 5000).
+
 %%%===================================================================
 %%% API
 %%%===================================================================
@@ -49,25 +51,6 @@
 filesync(Name) ->
     logger_h_common:filesync(?MODULE,Name).
 
-%%%-----------------------------------------------------------------
-%%%
--spec info(Name) -> Info | {error,Reason} when
-      Name :: atom(),
-      Info :: term(),
-      Reason :: handler_busy | {badarg,term()}.
-
-info(Name) ->
-    logger_h_common:info(?MODULE,Name).
-
-%%%-----------------------------------------------------------------
-%%%
--spec reset(Name) -> ok | {error,Reason} when
-      Name :: atom(),
-      Reason :: handler_busy | {badarg,term()}.
-
-reset(Name) ->
-    logger_h_common:reset(?MODULE,Name).
-
 %%%===================================================================
 %%% logger callbacks - just forward to logger_h_common
 %%%===================================================================
@@ -122,85 +105,169 @@ filter_config(Config) ->
 %%%===================================================================
 %%% logger_h_common callbacks
 %%%===================================================================
-init(Name, #{type := Type}) ->
-    case open_log_file(Name, Type) of
+init(Name, Config) ->
+    MyConfig = maps:with([type,file,modes,file_check,max_no_bytes,
+                          max_no_files,compress_on_rotate],Config),
+    case file_ctrl_start(Name, MyConfig) of
         {ok,FileCtrlPid} ->
-            {ok,#{type=>Type,file_ctrl_pid=>FileCtrlPid}};
+            {ok,MyConfig#{file_ctrl_pid=>FileCtrlPid}};
         Error ->
             Error
     end.
 
-check_config(_Name,set,undefined,NewHConfig) ->
-    check_config(maps:merge(get_default_config(),NewHConfig));
-check_config(_Name,SetOrUpdate,OldHConfig,NewHConfig0) ->
-    WriteOnce = maps:with([type],OldHConfig),
+check_config(Name,set,undefined,NewHConfig) ->
+    check_h_config(merge_default_config(Name,normalize_config(NewHConfig)));
+check_config(Name,SetOrUpdate,OldHConfig,NewHConfig0) ->
+    WriteOnce = maps:with([type,file,modes],OldHConfig),
     Default =
         case SetOrUpdate of
             set ->
                 %% Do not reset write-once fields to defaults
-                maps:merge(get_default_config(),WriteOnce);
+                merge_default_config(Name,WriteOnce);
             update ->
                 OldHConfig
         end,
 
-    NewHConfig = maps:merge(Default, NewHConfig0),
+    NewHConfig = maps:merge(Default, normalize_config(NewHConfig0)),
 
     %% Fail if write-once fields are changed
-    case maps:with([type],NewHConfig) of
+    case maps:with([type,file,modes],NewHConfig) of
         WriteOnce ->
-            check_config(NewHConfig);
+            check_h_config(NewHConfig);
         Other ->
             {error,{illegal_config_change,?MODULE,WriteOnce,Other}}
     end.
 
-check_config(#{type:=Type}=HConfig) ->
-    case check_h_config(maps:to_list(HConfig)) of
-        ok when is_atom(Type) ->
-            {ok,HConfig#{filesync_repeat_interval=>no_repeat}};
+check_h_config(HConfig) ->
+    case check_h_config(maps:get(type,HConfig),maps:to_list(HConfig)) of
         ok ->
-            {ok,HConfig};
+            {ok,fix_file_opts(HConfig)};
         {error,{Key,Value}} ->
             {error,{invalid_config,?MODULE,#{Key=>Value}}}
     end.
 
-check_h_config([{type,Type} | Config]) when Type == standard_io;
-                                            Type == standard_error ->
-    check_h_config(Config);
-check_h_config([{type,{file,File}} | Config]) when is_list(File) ->
-    check_h_config(Config);
-check_h_config([{type,{file,File,Modes}} | Config]) when is_list(File),
-                                                         is_list(Modes) ->
-    check_h_config(Config);
-check_h_config([Other | _]) ->
+check_h_config(Type,[{type,Type} | Config]) when Type =:= standard_io;
+                                                 Type =:= standard_error;
+                                                 Type =:= file ->
+    check_h_config(Type,Config);
+check_h_config(file,[{file,File} | Config]) when is_list(File) ->
+    check_h_config(file,Config);
+check_h_config(file,[{modes,Modes} | Config]) when is_list(Modes) ->
+    check_h_config(file,Config);
+check_h_config(file,[{max_no_bytes,Size} | Config])
+  when (is_integer(Size) andalso Size>0) orelse Size=:=infinity ->
+    check_h_config(file,Config);
+check_h_config(file,[{max_no_files,Num} | Config]) when is_integer(Num), Num>=0 ->
+    check_h_config(file,Config);
+check_h_config(file,[{compress_on_rotate,Bool} | Config]) when is_boolean(Bool) ->
+    check_h_config(file,Config);
+check_h_config(file,[{file_check,FileCheck} | Config])
+  when is_integer(FileCheck), FileCheck>=0 ->
+    check_h_config(file,Config);
+check_h_config(_Type,[Other | _]) ->
     {error,Other};
-check_h_config([]) ->
+check_h_config(_Type,[]) ->
     ok.
 
-get_default_config() ->
-     #{type => standard_io}.
+normalize_config(#{type:={file,File}}=HConfig) ->
+    HConfig#{type=>file,file=>File};
+normalize_config(#{type:={file,File,Modes}}=HConfig) ->
+    HConfig#{type=>file,file=>File,modes=>Modes};
+normalize_config(HConfig) ->
+    HConfig.
+
+merge_default_config(Name,#{type:=Type}=HConfig) ->
+    merge_default_config(Name,Type,HConfig);
+merge_default_config(Name,#{file:=_}=HConfig) ->
+    merge_default_config(Name,file,HConfig);
+merge_default_config(Name,HConfig) ->
+    merge_default_config(Name,standard_io,HConfig).
+
+merge_default_config(Name,Type,HConfig) ->
+    maps:merge(get_default_config(Name,Type),HConfig).
+
+get_default_config(Name,file) ->
+     #{type => file,
+       file => atom_to_list(Name),
+       modes => [raw,append],
+       file_check => 0,
+       max_no_bytes => infinity,
+       max_no_files => 0,
+       compress_on_rotate => false};
+get_default_config(_Name,Type) ->
+     #{type => Type}.
+
+fix_file_opts(#{modes:=Modes}=HConfig) ->
+    HConfig#{modes=>fix_modes(Modes)};
+fix_file_opts(HConfig) ->
+    HConfig#{filesync_repeat_interval=>no_repeat}.
+
+fix_modes(Modes) ->
+    %% Ensure write|append|exclusive
+    Modes1 =
+        case [M || M <- Modes,
+                   lists:member(M,[write,append,exclusive])] of
+            [] -> [append|Modes];
+            _ -> Modes
+        end,
+    %% Ensure raw
+    Modes2 =
+        case lists:member(raw,Modes) of
+            false -> [raw|Modes1];
+            true -> Modes1
+        end,
+    %% Ensure delayed_write
+    case lists:partition(fun(delayed_write) -> true;
+                            ({delayed_write,_,_}) -> true;
+                            (_) -> false
+                         end, Modes2) of
+        {[],_} ->
+            [delayed_write|Modes2];
+        _ ->
+            Modes2
+    end.
+
+config_changed(_Name,
+               #{file_check:=FileCheck,
+                 max_no_bytes:=Size,
+                 max_no_files:=Count,
+                 compress_on_rotate:=Compress},
+               #{file_check:=FileCheck,
+                 max_no_bytes:=Size,
+                 max_no_files:=Count,
+                 compress_on_rotate:=Compress}=State) ->
+    State;
+config_changed(_Name,
+               #{file_check:=FileCheck,
+                 max_no_bytes:=Size,
+                 max_no_files:=Count,
+                 compress_on_rotate:=Compress},
+               #{file_ctrl_pid := FileCtrlPid} = State) ->
+    FileCtrlPid ! {update_config,#{file_check=>FileCheck,
+                                   max_no_bytes=>Size,
+                                   max_no_files=>Count,
+                                   compress_on_rotate=>Compress}},
+    State#{file_check:=FileCheck,
+           max_no_bytes:=Size,
+           max_no_files:=Count,
+           compress_on_rotate:=Compress};
+config_changed(_Name,_NewHConfig,State) ->
+    State.
 
-filesync(_Name, _Mode, #{type := Type}=State) when is_atom(Type) ->
-    {ok,State};
-filesync(_Name, async, #{file_ctrl_pid := FileCtrlPid} = State) ->
-    ok = file_ctrl_filesync_async(FileCtrlPid),
-    {ok,State};
-filesync(_Name, sync, #{file_ctrl_pid := FileCtrlPid} = State) ->
-    Result = file_ctrl_filesync_sync(FileCtrlPid),
+filesync(_Name, SyncAsync, #{file_ctrl_pid := FileCtrlPid} = State) ->
+    Result = file_ctrl_filesync(SyncAsync, FileCtrlPid),
     {Result,State}.
 
-write(_Name, async, Bin, #{file_ctrl_pid:=FileCtrlPid} = State) ->
-    ok = file_write_async(FileCtrlPid, Bin),
-    {ok,State};
-write(_Name, sync, Bin, #{file_ctrl_pid:=FileCtrlPid} = State) ->
-    Result = file_write_sync(FileCtrlPid, Bin),
+write(_Name, SyncAsync, Bin, #{file_ctrl_pid:=FileCtrlPid} = State) ->
+    Result = file_write(SyncAsync, FileCtrlPid, Bin),
     {Result,State}.
 
 reset_state(_Name, State) ->
     State.
 
-handle_info(_Name, {'EXIT',Pid,Why}, #{type := FileInfo, file_ctrl_pid := Pid}) ->
+handle_info(_Name, {'EXIT',Pid,Why}, #{file_ctrl_pid := Pid}=State) ->
     %% file_ctrl_pid died, file error, terminate handler
-    exit({error,{write_failed,FileInfo,Why}});
+    exit({error,{write_failed,maps:with([type,file,modes],State),Why}});
 handle_info(_, _, State) ->
     State.
 
@@ -228,23 +295,36 @@ terminate(_Name, _Reason, #{file_ctrl_pid:=FWPid}) ->
 
 %%%-----------------------------------------------------------------
 %%%
-open_log_file(HandlerName, FileInfo) ->
-    case file_ctrl_start(HandlerName, FileInfo) of
-        OK = {ok,_FileCtrlPid} -> OK;
-        Error -> Error
-    end.
-
-do_open_log_file({file,File}) ->
-    do_open_log_file({file,File,[raw,append,delayed_write]});
-
-do_open_log_file({file,File,[]}) ->
-    do_open_log_file({file,File,[raw,append,delayed_write]});
-
-do_open_log_file({file,File,Modes}) ->
+open_log_file(HandlerName,#{type:=file,
+                            file:=FileName,
+                            modes:=Modes,
+                            file_check:=FileCheck,
+                            max_no_bytes:=Size,
+                            max_no_files:=Count,
+                            compress_on_rotate:=Compress}) ->
     try
-        case filelib:ensure_dir(File) of
+        case filelib:ensure_dir(FileName) of
             ok ->
-                file:open(File, Modes);
+                case file:open(FileName, Modes) of
+                    {ok, Fd} ->
+                        {ok,#file_info{inode=INode}} =
+                            file:read_file_info(FileName,[raw]),
+                        UpdateModes = [append | Modes--[write,append,exclusive]],
+                        State0 = #{handler_name=>HandlerName,
+                                   file_name=>FileName,
+                                   modes=>UpdateModes,
+                                   file_check=>FileCheck,
+                                   fd=>Fd,
+                                   inode=>INode,
+                                   last_check=>timestamp(),
+                                   synced=>false,
+                                   write_res=>ok,
+                                   sync_res=>ok},
+                        State = update_rotation({Size,Count,Compress},State0),
+                        {ok,State};
+                    Error ->
+                        Error
+                end;
             Error ->
                 Error
         end
@@ -252,21 +332,23 @@ do_open_log_file({file,File,Modes}) ->
         _:Reason -> {error,Reason}
     end.
 
-close_log_file(Std) when Std == standard_io; Std == standard_error ->
-    ok;
-close_log_file(Fd) ->
+close_log_file(#{fd:=Fd}) ->
     _ = file:datasync(Fd),
-    _ = file:close(Fd).
+    _ = file:close(Fd),
+    ok;
+close_log_file(_) ->
+    ok.
+
 
 
 %%%-----------------------------------------------------------------
 %%% File control process
 
-file_ctrl_start(HandlerName, FileInfo) ->
+file_ctrl_start(HandlerName, HConfig) ->
     Starter = self(),
     FileCtrlPid =
         spawn_link(fun() ->
-                           file_ctrl_init(HandlerName, FileInfo, Starter)
+                           file_ctrl_init(HandlerName, HConfig, Starter)
                    end),
     receive
         {FileCtrlPid,ok} ->
@@ -281,18 +363,16 @@ file_ctrl_start(HandlerName, FileInfo) ->
 file_ctrl_stop(Pid) ->
     Pid ! stop.
 
-file_write_async(Pid, Bin) ->
+file_write(async, Pid, Bin) ->
     Pid ! {log,Bin},
-    ok.
-
-file_write_sync(Pid, Bin) ->
+    ok;
+file_write(sync, Pid, Bin) ->
     file_ctrl_call(Pid, {log,Bin}).
 
-file_ctrl_filesync_async(Pid) ->
+file_ctrl_filesync(async, Pid) ->
     Pid ! filesync,
-    ok.
-
-file_ctrl_filesync_sync(Pid) ->
+    ok;
+file_ctrl_filesync(sync, Pid) ->
     file_ctrl_call(Pid, filesync).
 
 file_ctrl_call(Pid, Msg) ->
@@ -309,94 +389,255 @@ file_ctrl_call(Pid, Msg) ->
             {error,{no_response,Pid}}
     end.    
 
-file_ctrl_init(HandlerName, FileInfo, Starter) when is_tuple(FileInfo) ->
+file_ctrl_init(HandlerName,
+               #{type:=file,
+                 file:=FileName} = HConfig,
+               Starter) ->
     process_flag(message_queue_data, off_heap),
-    FileName = element(2, FileInfo),
-    case do_open_log_file(FileInfo) of
-        {ok,Fd} ->
+    case open_log_file(HandlerName,HConfig) of
+        {ok,State} ->
             Starter ! {self(),ok},
-            file_ctrl_loop(Fd, FileName, false, ok, ok, HandlerName);
+            file_ctrl_loop(State);
         {error,Reason} ->
             Starter ! {self(),{error,{open_failed,FileName,Reason}}}
     end;
-file_ctrl_init(HandlerName, StdDev, Starter) ->
+file_ctrl_init(HandlerName, #{type:=StdDev}, Starter) ->
     Starter ! {self(),ok},
-    file_ctrl_loop(StdDev, StdDev, false, ok, ok, HandlerName).
+    file_ctrl_loop(#{handler_name=>HandlerName,dev=>StdDev}).
 
-file_ctrl_loop(Fd, DevName, Synced,
-               PrevWriteResult, PrevSyncResult, HandlerName) ->
+file_ctrl_loop(State) ->
     receive
         %% asynchronous event
         {log,Bin} ->
-            Fd1 = ensure(Fd, DevName),
-            Result = write_to_dev(Fd1, Bin, DevName, PrevWriteResult, HandlerName),
-            file_ctrl_loop(Fd1, DevName, false,
-                           Result, PrevSyncResult, HandlerName);
+            State1 = write_to_dev(Bin,State),
+            file_ctrl_loop(State1);
 
         %% synchronous event
         {{log,Bin},{From,MRef}} ->
-            Fd1 = ensure(Fd, DevName),
-            Result = write_to_dev(Fd1, Bin, DevName, PrevWriteResult, HandlerName),
+            State1 = ensure_file(State),
+            State2 = write_to_dev(Bin,State1),
             From ! {MRef,ok},
-            file_ctrl_loop(Fd1, DevName, false,
-                           Result, PrevSyncResult, HandlerName);
+            file_ctrl_loop(State2);
 
         filesync ->
-            Fd1 = ensure(Fd, DevName),
-            Result = sync_dev(Fd1, DevName, Synced, PrevSyncResult, HandlerName),
-            file_ctrl_loop(Fd1, DevName, true,
-                           PrevWriteResult, Result, HandlerName);
+            State1 = sync_dev(State),
+            file_ctrl_loop(State1);
 
         {filesync,{From,MRef}} ->
-            Fd1 = ensure(Fd, DevName),
-            Result = sync_dev(Fd1, DevName, Synced, PrevSyncResult, HandlerName),
+            State1 = ensure_file(State),
+            State2 = sync_dev(State1),
             From ! {MRef,ok},
-            file_ctrl_loop(Fd1, DevName, true,
-                           PrevWriteResult, Result, HandlerName);
+            file_ctrl_loop(State2);
+
+        {update_config,#{file_check:=FileCheck,
+                         max_no_bytes:=Size,
+                         max_no_files:=Count,
+                         compress_on_rotate:=Compress}} ->
+            State1 = update_rotation({Size,Count,Compress},State),
+            file_ctrl_loop(State1#{file_check=>FileCheck});
 
         stop ->
-            _ = close_log_file(Fd),
+            close_log_file(State),
             stopped
     end.
 
+maybe_ensure_file(#{file_check:=0}=State) ->
+    ensure_file(State);
+maybe_ensure_file(#{last_check:=T0,file_check:=CheckInt}=State)
+  when is_integer(CheckInt) ->
+    T = timestamp(),
+    if T-T0 > CheckInt -> ensure_file(State);
+       true -> State
+    end;
+maybe_ensure_file(State) ->
+    State.
+
 %% In order to play well with tools like logrotate, we need to be able
 %% to re-create the file if it has disappeared (e.g. if rotated by
 %% logrotate)
-ensure(Fd,DevName) when is_atom(DevName) ->
-    Fd;
-ensure(Fd,FileName) ->
-    case file:read_file_info(FileName) of
-        {ok,_} ->
-            Fd;
+ensure_file(#{fd:=Fd0,inode:=INode0,file_name:=FileName,modes:=Modes}=State) ->
+    case file:read_file_info(FileName,[raw]) of
+        {ok,#file_info{inode=INode0}} ->
+            State#{last_check=>timestamp()};
         _ ->
-            _ = file:close(Fd),
-            _ = file:close(Fd), % delayed_write cause close not to close
-            case do_open_log_file({file,FileName}) of
-                {ok,Fd1} ->
-                    Fd1;
+            close_log_file(Fd0),
+            case file:open(FileName,Modes) of
+                {ok,Fd} ->
+                    {ok,#file_info{inode=INode}} =
+                        file:read_file_info(FileName,[raw]),
+                    State#{fd=>Fd,inode=>INode,
+                           last_check=>timestamp(),
+                           synced=>true,sync_res=>ok};
                 Error ->
                     exit({could_not_reopen_file,Error})
             end
-    end.
+    end;
+ensure_file(State) ->
+    State.
 
-write_to_dev(DevName, Bin, _DevName, _PrevWriteResult, _HandlerName)
-  when is_atom(DevName) ->
-    io:put_chars(DevName, Bin);
-write_to_dev(Fd, Bin, FileName, PrevWriteResult, HandlerName) ->
+write_to_dev(Bin,#{dev:=DevName}=State) ->
+    io:put_chars(DevName, Bin),
+    State;
+write_to_dev(Bin, State) ->
+    State1 = #{fd:=Fd} = maybe_ensure_file(State),
     Result = ?file_write(Fd, Bin),
-    maybe_notify_error(write,Result,PrevWriteResult,FileName,HandlerName).
+    State2 = maybe_rotate_file(Bin,State1),
+    maybe_notify_error(write,Result,State2),
+    State2#{synced=>false,write_res=>Result}.
 
-sync_dev(_Fd, _FileName, true, PrevSyncResult, _HandlerName) ->
-    PrevSyncResult;
-sync_dev(Fd, FileName, false, PrevSyncResult, HandlerName) ->
+sync_dev(#{synced:=false}=State) ->
+    State1 = #{fd:=Fd} = maybe_ensure_file(State),
     Result = ?file_datasync(Fd),
-    maybe_notify_error(filesync,Result,PrevSyncResult,FileName,HandlerName).
+    maybe_notify_error(filesync,Result,State1),
+    State1#{synced=>true,sync_res=>Result};
+sync_dev(State) ->
+    State.
+
+update_rotation({infinity,_,_},State) ->
+    maybe_remove_archives(0,State),
+    maps:remove(rotation,State);
+update_rotation({Size,Count,Compress},#{file_name:=FileName} = State) ->
+    maybe_remove_archives(Count,State),
+    {ok,#file_info{size=CurrSize}} = file:read_file_info(FileName,[raw]),
+    State1 = State#{rotation=>#{size=>Size,
+                                count=>Count,
+                                compress=>Compress,
+                                curr_size=>CurrSize}},
+    maybe_update_compress(0,State1),
+    maybe_rotate_file(0,State1).
+
+maybe_remove_archives(Count,#{file_name:=FileName}=State) ->
+    Archive = rot_file_name(FileName,Count,false),
+    CompressedArchive = rot_file_name(FileName,Count,true),
+    case {file:read_file_info(Archive,[raw]),
+          file:read_file_info(CompressedArchive,[raw])} of
+        {{error,enoent},{error,enoent}} ->
+            ok;
+        _ ->
+            _ = file:delete(Archive),
+            _ = file:delete(CompressedArchive),
+            maybe_remove_archives(Count+1,State)
+    end.
+
+maybe_update_compress(Count,#{rotation:=#{count:=Count}}) ->
+    ok;
+maybe_update_compress(N,#{file_name:=FileName,
+                          rotation:=#{compress:=Compress}}=State) ->
+    Archive = rot_file_name(FileName,N,not Compress),
+    case file:read_file_info(Archive,[raw]) of
+        {ok,_} when Compress ->
+            compress_file(Archive);
+        {ok,_} ->
+            decompress_file(Archive);
+        _ ->
+            ok
+    end,
+    maybe_update_compress(N+1,State).
+
+maybe_rotate_file(Bin,#{rotation:=_}=State) when is_binary(Bin) ->
+    maybe_rotate_file(byte_size(Bin),State);
+maybe_rotate_file(AddSize,#{rotation:=#{size:=RotSize,
+                                        curr_size:=CurrSize}=Rotation}=State) ->
+    NewSize = CurrSize + AddSize,
+    if NewSize>RotSize ->
+            rotate_file(State#{rotation=>Rotation#{curr_size=>NewSize}});
+       true ->
+            State#{rotation=>Rotation#{curr_size=>NewSize}}
+    end;
+maybe_rotate_file(_Bin,State) ->
+    State.
+
+rotate_file(#{fd:=Fd0,file_name:=FileName,modes:=Modes,rotation:=Rotation}=State) ->
+    State1 = sync_dev(State),
+    _ = file:close(Fd0),
+    _ = file:close(Fd0),
+    rotate_files(FileName,maps:get(count,Rotation),maps:get(compress,Rotation)),
+    case file:open(FileName,Modes) of
+        {ok,Fd} ->
+            {ok,#file_info{inode=INode}} = file:read_file_info(FileName,[raw]),
+            State1#{fd=>Fd,inode=>INode,rotation=>Rotation#{curr_size=>0}};
+        Error ->
+            exit({could_not_reopen_file,Error})
+    end.
+
+rotate_files(FileName,0,_Compress) ->
+    _ = file:delete(FileName),
+    ok;
+rotate_files(FileName,1,Compress) ->
+    FileName0 = FileName++".0",
+    _ = file:rename(FileName,FileName0),
+    if Compress -> compress_file(FileName0);
+       true -> ok
+    end,
+    ok;
+rotate_files(FileName,Count,Compress) ->
+    _ = file:rename(rot_file_name(FileName,Count-2,Compress),
+                    rot_file_name(FileName,Count-1,Compress)),
+    rotate_files(FileName,Count-1,Compress).
+
+rot_file_name(FileName,Count,false) ->
+    FileName ++ "." ++ integer_to_list(Count);
+rot_file_name(FileName,Count,true) ->
+    rot_file_name(FileName,Count,false) ++ ".gz".
+
+compress_file(FileName) ->
+    {ok,In} = file:open(FileName,[read,binary]),
+    {ok,Out} = file:open(FileName++".gz",[write]),
+    Z = zlib:open(),
+    zlib:deflateInit(Z, default, deflated, 31, 8, default),
+    compress_data(Z,In,Out),
+    zlib:deflateEnd(Z),
+    zlib:close(Z),
+    _ = file:close(In),
+    _ = file:close(Out),
+    _ = file:delete(FileName),
+    ok.
+
+compress_data(Z,In,Out) ->
+    case file:read(In,100000) of
+        {ok,Data} ->
+            Compressed = zlib:deflate(Z, Data),
+            _ = file:write(Out,Compressed),
+            compress_data(Z,In,Out);
+        eof ->
+            Compressed = zlib:deflate(Z, <<>>, finish),
+            _ = file:write(Out,Compressed),
+            ok
+    end.
+
+decompress_file(FileName) ->
+    {ok,In} = file:open(FileName,[read,binary]),
+    {ok,Out} = file:open(filename:rootname(FileName,".gz"),[write]),
+    Z = zlib:open(),
+    zlib:inflateInit(Z, 31),
+    decompress_data(Z,In,Out),
+    zlib:inflateEnd(Z),
+    zlib:close(Z),
+    _ = file:close(In),
+    _ = file:close(Out),
+    _ = file:delete(FileName),
+    ok.
 
-maybe_notify_error(_Op, ok, _PrevResult, _FileName, _HandlerName) ->
+decompress_data(Z,In,Out) ->
+    case file:read(In,1000) of
+        {ok,Data} ->
+            Decompressed = zlib:inflate(Z, Data),
+            _ = file:write(Out,Decompressed),
+            decompress_data(Z,In,Out);
+        eof ->
+            ok
+    end.
+
+maybe_notify_error(_Op, ok, _State) ->
     ok;
-maybe_notify_error(_Op, PrevResult, PrevResult, _FileName, _HandlerName) ->
+maybe_notify_error(Op, Result, #{write_res:=WR,sync_res:=SR})
+  when (Op==write andalso Result==WR) orelse
+       (Op==filesync andalso Result==SR) ->
     %% don't report same error twice
-    PrevResult;
-maybe_notify_error(Op, Error, _PrevResult, FileName, HandlerName) ->
+    ok;
+maybe_notify_error(Op, Error, #{handler_name:=HandlerName,file_name:=FileName}) ->
     logger_h_common:error_notify({HandlerName,Op,FileName,Error}),
-    Error.
+    ok.
+
+timestamp() ->
+    erlang:monotonic_time(millisecond).
diff --git a/lib/kernel/src/logger_sup.erl b/lib/kernel/src/logger_sup.erl
index 3d6f482e20..9ea8558a16 100644
--- a/lib/kernel/src/logger_sup.erl
+++ b/lib/kernel/src/logger_sup.erl
@@ -50,7 +50,9 @@ init([]) ->
                 start => {logger_handler_watcher, start_link, []},
                 shutdown => brutal_kill},
 
-    {ok, {SupFlags, [Watcher]}}.
+    Proxy = logger_proxy:child_spec(),
+
+    {ok, {SupFlags, [Watcher,Proxy]}}.
 
 %%%===================================================================
 %%% Internal functions
diff --git a/lib/kernel/src/net.erl b/lib/kernel/src/net.erl
deleted file mode 100644
index 2d0ae2ed0c..0000000000
--- a/lib/kernel/src/net.erl
+++ /dev/null
@@ -1,40 +0,0 @@
-%%
-%% %CopyrightBegin%
-%% 
-%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
-%% 
-%% Licensed under the Apache License, Version 2.0 (the "License");
-%% you may not use this file except in compliance with the License.
-%% You may obtain a copy of the License at
-%%
-%%     http://www.apache.org/licenses/LICENSE-2.0
-%%
-%% Unless required by applicable law or agreed to in writing, software
-%% distributed under the License is distributed on an "AS IS" BASIS,
-%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-%% See the License for the specific language governing permissions and
-%% limitations under the License.
-%% 
-%% %CopyrightEnd%
-%%
--module(net).
-
-%% Various network functions, kept here for compatibility
-
--export([call/4,
-	 cast/4,
-	 broadcast/3,
-	 ping/1,
-	 relay/1,
-	 sleep/1]).
-
--deprecated(module).
-
-call(N,M,F,A) -> rpc:call(N,M,F,A).
-cast(N,M,F,A) -> rpc:cast(N,M,F,A).
-broadcast(M,F,A) -> rpc:eval_everywhere(M,F,A).
-ping(Node) -> net_adm:ping(Node).
-sleep(T) -> receive after T -> ok end.
-relay(X) -> slave:relay(X).
-
-
diff --git a/lib/kernel/src/net_kernel.erl b/lib/kernel/src/net_kernel.erl
index a9dc77837e..83d3b4b5e1 100644
--- a/lib/kernel/src/net_kernel.erl
+++ b/lib/kernel/src/net_kernel.erl
@@ -1126,14 +1126,22 @@ do_disconnect(Node, State) ->
 	    {false, State}
     end.
 
-
 disconnect_pid(Pid, State) ->
     exit(Pid, disconnect),
+
+    %% This code used to only use exit + recv 'EXIT' to sync,
+    %% but since OTP-22 links are no longer broken atomically
+    %% so the exit message below can arrive before any remaining
+    %% exit messages have killed the distribution port
+    Ref = erlang:monitor(process, Pid),
     %% Sync wait for connection to die!!!
     receive
-	{'EXIT',Pid,Reason} ->
-	    {_,State1} = handle_exit(Pid, Reason, State),
-	    {true, State1}
+        {'DOWN',Ref,_,_,_} ->
+            receive
+                {'EXIT',Pid,Reason} ->
+                    {_,State1} = handle_exit(Pid, Reason, State),
+                    {true, State1}
+            end
     end.
 
 %%
@@ -1433,7 +1441,7 @@ validate_hostname([$@|HostPart] = Host) ->
     end.
 
 valid_name_head(Head) ->
-    {ok, MP} = re:compile("^[0-9A-Za-z_\\-]*$", [unicode]),
+    {ok, MP} = re:compile("^[0-9A-Za-z_\\-]+$", [unicode]),
         case re:run(Head, MP) of
             {match, _} ->
                 true;
diff --git a/lib/kernel/src/raw_file_io_inflate.erl b/lib/kernel/src/raw_file_io_inflate.erl
index 7e9780310c..d3ed02dd03 100644
--- a/lib/kernel/src/raw_file_io_inflate.erl
+++ b/lib/kernel/src/raw_file_io_inflate.erl
@@ -26,7 +26,7 @@
 
 -include("file_int.hrl").
 
--define(INFLATE_CHUNK_SIZE, (1 bsl 10)).
+-define(INFLATE_CHUNK_SIZE, (8 bsl 10)).
 -define(GZIP_WBITS, (16 + 15)).
 
 callback_mode() -> state_functions.
diff --git a/lib/kernel/src/seq_trace.erl b/lib/kernel/src/seq_trace.erl
index 14fe21e9de..4f9d7b3e5c 100644
--- a/lib/kernel/src/seq_trace.erl
+++ b/lib/kernel/src/seq_trace.erl
@@ -98,7 +98,7 @@ print(Label, Term) ->
 -spec reset_trace() -> 'true'.
 
 reset_trace() ->
-    erlang:system_flag(1, 0).
+    erlang:system_flag(reset_seq_trace, true).
 
 %% reset_trace(Pid) -> % this might be a useful function too
 
diff --git a/lib/kernel/src/standard_error.erl b/lib/kernel/src/standard_error.erl
index 5d649e5f94..ef5b532960 100644
--- a/lib/kernel/src/standard_error.erl
+++ b/lib/kernel/src/standard_error.erl
@@ -27,7 +27,8 @@
 -define(PROCNAME_SUP, standard_error_sup).
 
 %% Defines for control ops
--define(CTRL_OP_GET_WINSIZE,100).
+-define(ERTS_TTYSL_DRV_CONTROL_MAGIC_NUMBER, 16#018b0900).
+-define(CTRL_OP_GET_WINSIZE, (100 + ?ERTS_TTYSL_DRV_CONTROL_MAGIC_NUMBER)).
 
 %%
 %% The basic server and start-up.
diff --git a/lib/kernel/src/user.erl b/lib/kernel/src/user.erl
index 872e63ab53..0c9e1ea303 100644
--- a/lib/kernel/src/user.erl
+++ b/lib/kernel/src/user.erl
@@ -28,7 +28,8 @@
 -define(NAME, user).
 
 %% Defines for control ops
--define(CTRL_OP_GET_WINSIZE,100).
+-define(ERTS_TTYSL_DRV_CONTROL_MAGIC_NUMBER, 16#018b0900).
+-define(CTRL_OP_GET_WINSIZE, (100 + ?ERTS_TTYSL_DRV_CONTROL_MAGIC_NUMBER)).
 
 %%
 %% The basic server and start-up.
diff --git a/lib/kernel/src/user_drv.erl b/lib/kernel/src/user_drv.erl
index 9f914aa222..08286dd476 100644
--- a/lib/kernel/src/user_drv.erl
+++ b/lib/kernel/src/user_drv.erl
@@ -32,9 +32,10 @@
 -define(OP_BEEP,4).
 -define(OP_PUTC_SYNC,5).
 % Control op
--define(CTRL_OP_GET_WINSIZE,100).
--define(CTRL_OP_GET_UNICODE_STATE,101).
--define(CTRL_OP_SET_UNICODE_STATE,102).
+-define(ERTS_TTYSL_DRV_CONTROL_MAGIC_NUMBER, 16#018b0900).
+-define(CTRL_OP_GET_WINSIZE, (100 + ?ERTS_TTYSL_DRV_CONTROL_MAGIC_NUMBER)).
+-define(CTRL_OP_GET_UNICODE_STATE, (101 + ?ERTS_TTYSL_DRV_CONTROL_MAGIC_NUMBER)).
+-define(CTRL_OP_SET_UNICODE_STATE, (102 + ?ERTS_TTYSL_DRV_CONTROL_MAGIC_NUMBER)).
 
 %% start()
 %% start(ArgumentList)
diff --git a/lib/kernel/test/Makefile b/lib/kernel/test/Makefile
index 4a86265a4a..6763a04d9f 100644
--- a/lib/kernel/test/Makefile
+++ b/lib/kernel/test/Makefile
@@ -57,6 +57,7 @@ MODULES= \
 	prim_file_SUITE \
 	ram_file_SUITE \
 	gen_tcp_api_SUITE \
+	gen_tcp_dist \
 	gen_tcp_echo_SUITE \
 	gen_tcp_misc_SUITE \
 	gen_udp_SUITE \
@@ -76,8 +77,11 @@ MODULES= \
 	logger_filters_SUITE \
 	logger_formatter_SUITE \
 	logger_legacy_SUITE \
+	logger_olp_SUITE \
+	logger_proxy_SUITE \
 	logger_simple_h_SUITE \
 	logger_std_h_SUITE \
+	logger_stress_SUITE \
 	logger_test_lib \
 	os_SUITE \
 	pg2_SUITE \
@@ -127,11 +131,17 @@ ERL_COMPILE_FLAGS +=
 
 EBIN = .
 
+TARGETS = $(MODULES:%=$(EBIN)/%.$(EMULATOR))
+
+
 # ----------------------------------------------------
 # Targets
 # ----------------------------------------------------
 
-make_emakefile:
+gen_tcp_dist.erl: ../examples/gen_tcp_dist/src/gen_tcp_dist.erl
+	cp $< $@
+
+make_emakefile: $(ERL_FILES)
 	$(ERL_TOP)/make/make_emakefile $(ERL_COMPILE_FLAGS) -o$(EBIN) '*_SUITE_make' \
 	> $(EMAKEFILE)
 	$(ERL_TOP)/make/make_emakefile $(ERL_COMPILE_FLAGS) -o$(EBIN) $(MODULES) \
@@ -147,6 +157,9 @@ clean:
 
 docs:
 
+targets: $(TARGETS)
+
+
 # ----------------------------------------------------
 # Release Target
 # ---------------------------------------------------- 
diff --git a/lib/kernel/test/application_SUITE.erl b/lib/kernel/test/application_SUITE.erl
index 5c35b82207..1ab554db7c 100644
--- a/lib/kernel/test/application_SUITE.erl
+++ b/lib/kernel/test/application_SUITE.erl
@@ -31,6 +31,7 @@
 	 otp_3002/1, otp_3184/1, otp_4066/1, otp_4227/1, otp_5363/1,
 	 otp_5606/1,
 	 start_phases/1, get_key/1, get_env/1,
+	 set_env/1, set_env_persistent/1, set_env_errors/1,
 	 permit_false_start_local/1, permit_false_start_dist/1, script_start/1, 
 	 nodedown_start/1, init2973/0, loop2973/0, loop5606/1]).
 
@@ -55,6 +56,7 @@ all() ->
      load_use_cache, ensure_started, {group, reported_bugs}, start_phases,
      script_start, nodedown_start, permit_false_start_local,
      permit_false_start_dist, get_key, get_env, ensure_all_started,
+     set_env, set_env_persistent, set_env_errors,
      {group, distr_changed}, config_change, shutdown_func, shutdown_timeout,
      shutdown_deadlock, config_relative_paths,
      persistent_env].
@@ -1944,6 +1946,94 @@ get_appls([_ | T], Res) ->
 get_appls([], Res) ->
     Res.
 
+%% Test set_env/1.
+set_env(Conf) when is_list(Conf) ->
+    ok = application:set_env([{appinc, [{own2, persist}, {not_in_app, persist}]},
+			      {unknown_app, [{key, persist}]}]),
+
+    %% own_env1 and own2 are set in appinc
+    undefined = application:get_env(appinc, own_env1),
+    {ok, persist} = application:get_env(appinc, own2),
+    {ok, persist} = application:get_env(appinc, not_in_app),
+    {ok, persist} = application:get_env(unknown_app, key),
+
+    ok = application:load(appinc()),
+    {ok, value1} = application:get_env(appinc, own_env1),
+    {ok, val2} = application:get_env(appinc, own2),
+    {ok, persist} = application:get_env(appinc, not_in_app),
+    {ok, persist} = application:get_env(unknown_app, key),
+
+    %% On reload, values are lost
+    ok = application:unload(appinc),
+    ok = application:load(appinc()),
+    {ok, value1} = application:get_env(appinc, own_env1),
+    {ok, val2} = application:get_env(appinc, own2),
+    undefined = application:get_env(appinc, not_in_app),
+
+    %% Clean up
+    ok = application:unload(appinc).
+
+%% Test set_env/2 with persistent true.
+set_env_persistent(Conf) when is_list(Conf) ->
+    Opts = [{persistent, true}],
+    ok = application:set_env([{appinc, [{own2, persist}, {not_in_app, persist}]},
+			      {unknown_app, [{key, persist}]}], Opts),
+
+    %% own_env1 and own2 are set in appinc
+    undefined = application:get_env(appinc, own_env1),
+    {ok, persist} = application:get_env(appinc, own2),
+    {ok, persist} = application:get_env(appinc, not_in_app),
+    {ok, persist} = application:get_env(unknown_app, key),
+
+    ok = application:load(appinc()),
+    {ok, value1} = application:get_env(appinc, own_env1),
+    {ok, persist} = application:get_env(appinc, own2),
+    {ok, persist} = application:get_env(appinc, not_in_app),
+    {ok, persist} = application:get_env(unknown_app, key),
+
+    %% On reload, values are not lost
+    ok = application:unload(appinc),
+    ok = application:load(appinc()),
+    {ok, value1} = application:get_env(appinc, own_env1),
+    {ok, persist} = application:get_env(appinc, own2),
+    {ok, persist} = application:get_env(appinc, not_in_app),
+
+    %% Clean up
+    ok = application:unload(appinc).
+
+set_env_errors(Conf) when is_list(Conf) ->
+    "application: 1; application name must be an atom" =
+	badarg_msg(fun() -> application:set_env([{1, []}]) end),
+
+    "application: foo; parameters must be a list" =
+	badarg_msg(fun() -> application:set_env([{foo, bar}]) end),
+
+    "invalid application config: foo_bar" =
+	badarg_msg(fun() -> application:set_env([foo_bar]) end),
+
+    "application: foo; invalid parameter name: 1" =
+	badarg_msg(fun() -> application:set_env([{foo, [{1, 2}]}]) end),
+
+    "application: foo; invalid parameter: config" =
+	badarg_msg(fun() -> application:set_env([{foo, [config]}]) end),
+
+    "application: kernel; erroneous parameter: distributed" =
+	badarg_msg(fun() -> application:set_env([{kernel, [{distributed, config}]}]) end),
+
+    "duplicate application config: foo" =
+	badarg_msg(fun() -> application:set_env([{foo, []}, {foo, []}]) end),
+
+    "application: foo; duplicate parameter: bar" =
+	badarg_msg(fun() -> application:set_env([{foo, [{bar, baz}, {bar, bat}]}]) end),
+
+    ok.
+
+badarg_msg(Fun) ->
+    try Fun() of
+	_ -> ct:fail(try_succeeded)
+    catch
+	error:{badarg, Msg} -> Msg
+    end.
 
 %% Test set_env/4 and unset_env/3 with persistent true.
 persistent_env(Conf) when is_list(Conf) ->
diff --git a/lib/kernel/test/code_SUITE.erl b/lib/kernel/test/code_SUITE.erl
index 1314316c13..4f0847084f 100644
--- a/lib/kernel/test/code_SUITE.erl
+++ b/lib/kernel/test/code_SUITE.erl
@@ -25,8 +25,8 @@
 -export([all/0, suite/0,groups/0,init_per_group/2,end_per_group/2]).
 -export([set_path/1, get_path/1, add_path/1, add_paths/1, del_path/1,
 	 replace_path/1, load_file/1, load_abs/1, ensure_loaded/1,
-	 delete/1, purge/1, purge_many_exits/1, soft_purge/1, is_loaded/1,
-	 all_loaded/1,
+	 delete/1, purge/1, purge_many_exits/0, purge_many_exits/1,
+         soft_purge/1, is_loaded/1, all_loaded/1,
 	 load_binary/1, dir_req/1, object_code/1, set_path_file/1,
 	 upgrade/1,
 	 sticky_dir/1, pa_pz_option/1, add_del_path/1,
@@ -55,7 +55,7 @@
 
 suite() ->
     [{ct_hooks,[ts_install_cth]},
-     {timetrap,{minutes,5}}].
+     {timetrap,{seconds,30}}].
 
 all() ->
     [set_path, get_path, add_path, add_paths, del_path,
@@ -140,6 +140,11 @@ end_per_testcase(on_load_embedded, Config) ->
     LinkName = proplists:get_value(link_name, Config),
     _ = del_link(LinkName),
     end_per_testcase(Config);
+end_per_testcase(upgrade, Config) ->
+    %% Make sure tracing is turned off even if the test times out.
+    erlang:trace_pattern({error_handler,undefined_function,3}, false, [global]),
+    erlang:trace(self(), false, [call]),
+    end_per_testcase(Config);
 end_per_testcase(_Func, Config) ->
     end_per_testcase(Config).
 
@@ -391,6 +396,9 @@ purge(Config) when is_list(Config) ->
     process_flag(trap_exit, OldFlag),
     ok.
 
+purge_many_exits() ->
+    [{timetrap, {minutes, 2}}].
+
 purge_many_exits(Config) when is_list(Config) ->
     OldFlag = process_flag(trap_exit, true),
 
@@ -525,7 +533,7 @@ upgrade(Config) ->
             T = [beam, hipe],
             [upgrade_do(DataDir, Client, T) || Client <- T],
 
-            case hipe:llvm_support_available() of
+            case hipe:erllvm_is_supported() of
                 false -> ok;
                 true  ->
                     T2 = [beam, hipe_llvm],
@@ -1021,6 +1029,13 @@ mult_lib_remove_prefix([H|T1], [H|T2]) ->
 mult_lib_remove_prefix([$/|T], []) -> T.
 
 bad_erl_libs(Config) when is_list(Config) ->
+    %% Preserve ERL_LIBS if set.
+    BadLibs0 = "/no/such/dir",
+    BadLibs =
+         case os:getenv("ERL_LIBS") of
+             false -> BadLibs0;
+             Libs -> BadLibs0 ++ ":" ++ Libs
+         end,
     {ok,Node} =
 	test_server:start_node(bad_erl_libs, slave, []),
     Code = rpc:call(Node,code,get_path,[]),
@@ -1028,10 +1043,9 @@ bad_erl_libs(Config) when is_list(Config) ->
 
     {ok,Node2} =
 	test_server:start_node(bad_erl_libs, slave,
-			       [{args,"-env ERL_LIBS /no/such/dir"}]),
+			       [{args,"-env ERL_LIBS " ++ BadLibs}]),
     Code2 = rpc:call(Node,code,get_path,[]),
     test_server:stop_node(Node2),
-
     %% Test that code path is not affected by the faulty ERL_LIBS
     Code = Code2,
 
@@ -1550,6 +1564,11 @@ on_load_update_code_1(3, Mod) ->
 
 %% Test -on_load while trace feature 'on_load' is enabled (OTP-14612)
 on_load_trace_on_load(Config) ->
+    %% 'on_load' enables tracing for all newly loaded modules, so we make a dry
+    %% run to ensure that ancillary modules like 'merl' won't be loaded during
+    %% the actual test.
+    on_load_update(Config),
+
     Papa = self(),
     Tracer = spawn_link(fun F() -> receive M -> Papa ! M end, F() end),
     {tracer,[]} = erlang:trace_info(self(),tracer),
diff --git a/lib/kernel/test/erl_distribution_SUITE.erl b/lib/kernel/test/erl_distribution_SUITE.erl
index 5a8bbd56c4..8dd4ef1987 100644
--- a/lib/kernel/test/erl_distribution_SUITE.erl
+++ b/lib/kernel/test/erl_distribution_SUITE.erl
@@ -40,7 +40,8 @@
 	 monitor_nodes_errors/1,
 	 monitor_nodes_combinations/1,
 	 monitor_nodes_cleanup/1,
-	 monitor_nodes_many/1]).
+	 monitor_nodes_many/1,
+         dist_ctrl_proc_smoke/1]).
 
 %% Performs the test at another node.
 -export([get_socket_priorities/0,
@@ -52,7 +53,7 @@
 
 -export([init_per_testcase/2, end_per_testcase/2]).
 
--export([start_node/2]).
+-export([dist_cntrlr_output_test/2]).
 
 -export([pinger/1]).
 
@@ -67,10 +68,11 @@
 
 suite() ->
     [{ct_hooks,[ts_install_cth]},
-     {timetrap,{minutes,4}}].
+     {timetrap,{minutes,12}}].
 
 all() -> 
-    [tick, tick_change, nodenames, hostnames, illegal_nodenames,
+    [dist_ctrl_proc_smoke,
+     tick, tick_change, nodenames, hostnames, illegal_nodenames,
      connect_node,
      hidden_node, setopts,
      table_waste, net_setuptime, inet_dist_options_options,
@@ -116,10 +118,12 @@ connect_node(Config) when is_list(Config) ->
     ok.
 
 tick(Config) when is_list(Config) ->
-    PaDir = filename:dirname(code:which(erl_distribution_SUITE)),
+    run_dist_configs(fun tick/2, Config).
 
+tick(DCfg, _Config) ->
     %% First check that the normal case is OK!
-    {ok, Node} = start_node(dist_test, "-pa " ++ PaDir),
+    [Name1, Name2] = get_nodenames(2, dist_test),
+    {ok, Node} = start_node(DCfg, Name1),
     rpc:call(Node, erl_distribution_SUITE, tick_cli_test, [node()]),
 
     erlang:monitor_node(Node, true),
@@ -143,14 +147,12 @@ tick(Config) when is_list(Config) ->
     %% Set the ticktime on the server node to 100 secs so the server
     %% node doesn't tick the client node within the interval ...
 
-    {ok, ServNode} = start_node(dist_test_server,
-				"-kernel net_ticktime 100 "
-				"-pa " ++ PaDir),
+    {ok, ServNode} = start_node(DCfg, Name2,
+				"-kernel net_ticktime 100"),
     rpc:call(ServNode, erl_distribution_SUITE, tick_serv_test, [Node, node()]),
 
-    {ok, _} = start_node(dist_test,
-			 "-kernel net_ticktime 12 "
-			 "-pa " ++ PaDir),
+    {ok, Node} = start_node(DCfg, Name1,
+			 "-kernel net_ticktime 12"),
     rpc:call(Node, erl_distribution_SUITE, tick_cli_test, [ServNode]),
 
     spawn_link(erl_distribution_SUITE, keep_conn, [Node]),
@@ -180,6 +182,9 @@ tick(Config) when is_list(Config) ->
 
 %% Checks that pinging nonexistyent nodes does not waste space in distribution table.
 table_waste(Config) when is_list(Config) ->
+    run_dist_configs(fun table_waste/2, Config).
+
+table_waste(DCfg, _Config) ->
     {ok, HName} = inet:gethostname(),
     F = fun(0,_F) -> [];
 	   (N,F) -> 
@@ -189,7 +194,7 @@ table_waste(Config) when is_list(Config) ->
 		F(N-1,F)
 	end,
     F(256,F),
-    {ok, N} = start_node(erl_distribution_300,""),
+    {ok, N} = start_node(DCfg, erl_distribution_300),
     stop_node(N),
     ok.
 
@@ -295,13 +300,16 @@ gethostname() ->
 
 %% Test that pinging an illegal nodename does not kill the node.
 illegal_nodenames(Config) when is_list(Config) ->
-    PaDir = filename:dirname(code:which(erl_distribution_SUITE)),
-    {ok, Node}=start_node(illegal_nodenames, "-pa " ++ PaDir),
+    run_dist_configs(fun illegal_nodenames/2, Config).
+
+illegal_nodenames(DCfg, _Config) ->
+    {ok, Node}=start_node(DCfg, illegal_nodenames),
     monitor_node(Node, true),
     RPid=rpc:call(Node, erlang, spawn,
 		  [?MODULE, pinger, [self()]]),
     receive
 	{RPid, pinged} ->
+            monitor_node(Node, false),
 	    ok;
 	{nodedown, Node} ->
 	    ct:fail("Remote node died.")
@@ -318,22 +326,25 @@ pinger(Starter) ->
 
 %% Test that you can set the net_setuptime properly.
 net_setuptime(Config) when is_list(Config) ->
+    run_dist_configs(fun net_setuptime/2, Config).
+
+net_setuptime(DCfg, _Config) ->
+
     %% In this test case, we reluctantly accept shorter times than the given
     %% setup time, because the connection attempt can end in a
     %% "Host unreachable" error before the timeout fires.
 
-    Res0 = do_test_setuptime("2"),
+    Res0 = do_test_setuptime(DCfg, "2"),
     io:format("Res0 = ~p", [Res0]),
     true = (Res0 =< 4000),
-    Res1 = do_test_setuptime("0.3"),
+    Res1 = do_test_setuptime(DCfg, "0.3"),
     io:format("Res1 = ~p", [Res1]),
     true = (Res1 =< 500),
     ok.
 
-do_test_setuptime(Setuptime) when is_list(Setuptime) ->
-    PaDir = filename:dirname(code:which(?MODULE)),
-    {ok, Node} = start_node(dist_setuptime_test, "-pa " ++ PaDir ++
-				" -kernel net_setuptime " ++ Setuptime),
+do_test_setuptime(DCfg, Setuptime) when is_list(Setuptime) ->
+    {ok, Node} = start_node(DCfg, dist_setuptime_test,
+                            "-kernel net_setuptime " ++ Setuptime),
     Res = rpc:call(Node,?MODULE,time_ping,[?DUMMY_NODE]),
     stop_node(Node),
     Res.
@@ -399,32 +410,36 @@ tick_cli_test1(Node) ->
     end.
 
 setopts(Config) when is_list(Config) ->
+    run_dist_configs(fun setopts/2, Config).
+
+setopts(DCfg, _Config) ->
     register(setopts_regname, self()),
     [N1,N2,N3,N4] = get_nodenames(4, setopts),
 
-    {_N1F,Port1} = start_node_unconnected(N1, ?MODULE, run_remote_test,
+    {_N1F,Port1} = start_node_unconnected(DCfg, N1, ?MODULE, run_remote_test,
 					["setopts_do", atom_to_list(node()), "1", "ping"]),
     0 = wait_for_port_exit(Port1),
 
-    {_N2F,Port2} = start_node_unconnected(N2, ?MODULE, run_remote_test,
+    {_N2F,Port2} = start_node_unconnected(DCfg, N2, ?MODULE, run_remote_test,
 				 ["setopts_do", atom_to_list(node()), "2", "ping"]),
     0 = wait_for_port_exit(Port2),
 
     {ok, LSock} = gen_tcp:listen(0, [{packet,2}, {active,false}]),
     {ok, LTcpPort} = inet:port(LSock),
 
-    {N3F,Port3} = start_node_unconnected(N3, ?MODULE, run_remote_test,
+    {N3F,Port3} = start_node_unconnected(DCfg, N3, ?MODULE, run_remote_test,
 					["setopts_do", atom_to_list(node()),
 					 "1", integer_to_list(LTcpPort)]),
     wait_and_connect(LSock, N3F, Port3),
     0 = wait_for_port_exit(Port3),
 
-    {N4F,Port4} = start_node_unconnected(N4, ?MODULE, run_remote_test,
+    {N4F,Port4} = start_node_unconnected(DCfg, N4, ?MODULE, run_remote_test,
 					["setopts_do", atom_to_list(node()),
 					 "2", integer_to_list(LTcpPort)]),
     wait_and_connect(LSock, N4F, Port4),
     0 = wait_for_port_exit(Port4),
 
+    unregister(setopts_regname),
     ok.
 
 wait_and_connect(LSock, NodeName, NodePort) ->
@@ -518,9 +533,9 @@ opt_from_nr("2") -> {nodelay, false}.
 change_val(true)  -> false;
 change_val(false) -> true.
 
-start_node_unconnected(Name, Mod, Func, Args) ->
+start_node_unconnected(DCfg, Name, Mod, Func, Args) ->
     FullName = full_node_name(Name),
-    CmdLine = mk_node_cmdline(Name,Mod,Func,Args),
+    CmdLine = mk_node_cmdline(DCfg, Name,Mod,Func,Args),
     io:format("Starting node ~p: ~s~n", [FullName, CmdLine]),
     case open_port({spawn, CmdLine}, [exit_status]) of
 	Port when is_port(Port) ->
@@ -534,7 +549,7 @@ full_node_name(PreName) ->
 				 atom_to_list(node())),
     list_to_atom(atom_to_list(PreName) ++ HostSuffix).
 
-mk_node_cmdline(Name,Mod,Func,Args) ->
+mk_node_cmdline(DCfg, Name,Mod,Func,Args) ->
     Static = "-noinput",
     Pa = filename:dirname(code:which(?MODULE)),
     Prog = case catch init:get_argument(progname) of
@@ -551,6 +566,7 @@ mk_node_cmdline(Name,Mod,Func,Args) ->
     Prog ++ " "
 	++ Static ++ " "
 	++ NameSw ++ " " ++ NameStr
+        ++ " " ++ DCfg
 	++ " -pa " ++ Pa
 	++ " -env ERL_CRASH_DUMP " ++ Pwd ++ "/erl_crash_dump." ++ NameStr
 	++ " -setcookie " ++ atom_to_list(erlang:get_cookie())
@@ -560,7 +576,9 @@ mk_node_cmdline(Name,Mod,Func,Args) ->
 
 %% OTP-4255.
 tick_change(Config) when is_list(Config) ->
-    PaDir = filename:dirname(code:which(?MODULE)),
+    run_dist_configs(fun tick_change/2, Config).
+
+tick_change(DCfg, _Config) ->
     [BN, CN] = get_nodenames(2, tick_change),
     DefaultTT = net_kernel:get_net_ticktime(),
     unchanged = net_kernel:set_net_ticktime(DefaultTT, 60),
@@ -577,14 +595,13 @@ tick_change(Config) when is_list(Config) ->
     end,
 
     wait_until(fun () -> 10 == net_kernel:get_net_ticktime() end),
-    {ok, B} = start_node(BN, "-kernel net_ticktime 10 -pa " ++ PaDir),
-    {ok, C} = start_node(CN, "-kernel net_ticktime 10 -hidden -pa "
-			 ++ PaDir),
+    {ok, B} = start_node(DCfg, BN, "-kernel net_ticktime 10"),
+    {ok, C} = start_node(DCfg, CN, "-kernel net_ticktime 10 -hidden"),
 
     OTE = process_flag(trap_exit, true),
     case catch begin
-		   run_tick_change_test(B, C, 10, 1, PaDir),
-		   run_tick_change_test(B, C, 1, 10, PaDir)
+		   run_tick_change_test(DCfg, B, C, 10, 1),
+		   run_tick_change_test(DCfg, B, C, 1, 10)
 	       end of
 	{'EXIT', Reason} ->
 	    stop_node(B),
@@ -626,7 +643,7 @@ wait_for_nodedowns(Tester, Ref) ->
     end,
     wait_for_nodedowns(Tester, Ref).
 
-run_tick_change_test(B, C, PrevTT, TT, PaDir) ->
+run_tick_change_test(DCfg, B, C, PrevTT, TT) ->
     [DN, EN] = get_nodenames(2, tick_change),
 
     Tester = self(),
@@ -640,8 +657,8 @@ run_tick_change_test(B, C, PrevTT, TT, PaDir) ->
 			   wait_for_nodedowns(Tester, Ref)
 		   end,
 
-    {ok, D} = start_node(DN, "-kernel net_ticktime "
-			 ++ integer_to_list(PrevTT) ++ " -pa " ++ PaDir),
+    {ok, D} = start_node(DCfg, DN, "-kernel net_ticktime "
+			 ++ integer_to_list(PrevTT)),
 
     NMA = spawn_link(fun () -> MonitorNodes([B, C, D]) end),
     NMB = spawn_link(B, fun () -> MonitorNodes([node(), C, D]) end),
@@ -674,8 +691,8 @@ run_tick_change_test(B, C, PrevTT, TT, PaDir) ->
     sleep(7),
     change_initiated = rpc:call(C,net_kernel,set_net_ticktime,[TT,10]),
 
-    {ok, E} = start_node(EN, "-kernel net_ticktime "
-			 ++ integer_to_list(TT) ++ " -pa " ++ PaDir),
+    {ok, E} = start_node(DCfg, EN, "-kernel net_ticktime "
+			 ++ integer_to_list(TT)),
     NME  = spawn_link(E, fun () -> MonitorNodes([node(), B, C, D]) end),
     NMA2 = spawn_link(fun () -> MonitorNodes([E]) end),
     NMB2 = spawn_link(B, fun () -> MonitorNodes([E]) end),
@@ -735,12 +752,13 @@ run_tick_change_test(B, C, PrevTT, TT, PaDir) ->
 %%
 %% Basic test of hidden node.
 hidden_node(Config) when is_list(Config) ->
-    PaDir = filename:dirname(code:which(?MODULE)),
-    VArgs = "-pa " ++ PaDir,
-    HArgs = "-hidden -pa " ++ PaDir,
-    {ok, V} = start_node(visible_node, VArgs),
+    run_dist_configs(fun hidden_node/2, Config).
+
+hidden_node(DCfg, _Config) ->
+    HArgs = "-hidden",
+    {ok, V} = start_node(DCfg, visible_node),
     VMN = start_monitor_nodes_proc(V),
-    {ok, H} = start_node(hidden_node, HArgs),
+    {ok, H} = start_node(DCfg, hidden_node, HArgs),
     %% Connect visible_node -> hidden_node
     connect_nodes(V, H),
     test_nodes(V, H),
@@ -748,9 +766,9 @@ hidden_node(Config) when is_list(Config) ->
     sleep(5),
     check_monitor_nodes_res(VMN, H),
     stop_node(V),
-    {ok, H} = start_node(hidden_node, HArgs),
+    {ok, H} = start_node(DCfg, hidden_node, HArgs),
     HMN = start_monitor_nodes_proc(H),
-    {ok, V} = start_node(visible_node, VArgs),
+    {ok, V} = start_node(DCfg, visible_node),
     %% Connect hidden_node -> visible_node
     connect_nodes(H, V),
     test_nodes(V, H),
@@ -850,9 +868,9 @@ do_inet_dist_options_options(Prio) ->
 	"-kernel inet_dist_connect_options "++PriorityString++" "
 	"-kernel inet_dist_listen_options "++PriorityString,
     {ok,Node1} =
-	start_node(inet_dist_options_1, InetDistOptions),
+	start_node("", inet_dist_options_1, InetDistOptions),
     {ok,Node2} =
-	start_node(inet_dist_options_2, InetDistOptions),
+	start_node("", inet_dist_options_2, InetDistOptions),
     %%
     pong =
 	rpc:call(Node1, net_adm, ping, [Node2]),
@@ -885,6 +903,9 @@ get_socket_priorities() ->
 %%
 
 monitor_nodes_nodedown_reason(Config) when is_list(Config) ->
+    run_dist_configs(fun monitor_nodes_nodedown_reason/2, Config).
+
+monitor_nodes_nodedown_reason(DCfg, _Config) ->
     MonNodeState = monitor_node_state(),
     ok = net_kernel:monitor_nodes(true),
     ok = net_kernel:monitor_nodes(true, [nodedown_reason]),
@@ -892,10 +913,10 @@ monitor_nodes_nodedown_reason(Config) when is_list(Config) ->
     Names = get_numbered_nodenames(5, node),
     [NN1, NN2, NN3, NN4, NN5] = Names,
 
-    {ok, N1} = start_node(NN1),
-    {ok, N2} = start_node(NN2),
-    {ok, N3} = start_node(NN3),
-    {ok, N4} = start_node(NN4, "-hidden"),
+    {ok, N1} = start_node(DCfg, NN1),
+    {ok, N2} = start_node(DCfg, NN2),
+    {ok, N3} = start_node(DCfg, NN3),
+    {ok, N4} = start_node(DCfg, NN4, "-hidden"),
 
     receive {nodeup, N1} -> ok end,
     receive {nodeup, N2} -> ok end,
@@ -925,7 +946,7 @@ monitor_nodes_nodedown_reason(Config) when is_list(Config) ->
 
     ok = net_kernel:monitor_nodes(false, [nodedown_reason]),
 
-    {ok, N5} = start_node(NN5),
+    {ok, N5} = start_node(DCfg, NN5),
     stop_node(N5),
 
     receive {nodeup, N5} -> ok end,
@@ -938,11 +959,14 @@ monitor_nodes_nodedown_reason(Config) when is_list(Config) ->
 
 
 monitor_nodes_complex_nodedown_reason(Config) when is_list(Config) ->
+    run_dist_configs(fun monitor_nodes_complex_nodedown_reason/2, Config).
+
+monitor_nodes_complex_nodedown_reason(DCfg, _Config) ->
     MonNodeState = monitor_node_state(),
     Me = self(),
     ok = net_kernel:monitor_nodes(true, [nodedown_reason]),
     [Name] = get_nodenames(1, monitor_nodes_complex_nodedown_reason),
-    {ok, Node} = start_node(Name, ""),
+    {ok, Node} = start_node(DCfg, Name, ""),
     Pid = spawn(Node,
 		fun() ->
 			Me ! {stuff,
@@ -981,16 +1005,19 @@ monitor_nodes_complex_nodedown_reason(Config) when is_list(Config) ->
 %%
 
 monitor_nodes_node_type(Config) when is_list(Config) ->
+    run_dist_configs(fun monitor_nodes_node_type/2, Config).
+
+monitor_nodes_node_type(DCfg, _Config) ->
     MonNodeState = monitor_node_state(),
     ok = net_kernel:monitor_nodes(true),
     ok = net_kernel:monitor_nodes(true, [{node_type, all}]),
     Names = get_numbered_nodenames(9, node),
     [NN1, NN2, NN3, NN4, NN5, NN6, NN7, NN8, NN9] = Names,
 
-    {ok, N1} = start_node(NN1),
-    {ok, N2} = start_node(NN2),
-    {ok, N3} = start_node(NN3, "-hidden"),
-    {ok, N4} = start_node(NN4, "-hidden"),
+    {ok, N1} = start_node(DCfg, NN1),
+    {ok, N2} = start_node(DCfg, NN2),
+    {ok, N3} = start_node(DCfg, NN3, "-hidden"),
+    {ok, N4} = start_node(DCfg, NN4, "-hidden"),
 
     receive {nodeup, N1} -> ok end,
     receive {nodeup, N2} -> ok end,
@@ -1014,15 +1041,15 @@ monitor_nodes_node_type(Config) when is_list(Config) ->
     receive {nodedown, N4, [{node_type, hidden}]} -> ok end,
 
     ok = net_kernel:monitor_nodes(false, [{node_type, all}]),
-    {ok, N5} = start_node(NN5),
+    {ok, N5} = start_node(DCfg, NN5),
 
     receive {nodeup, N5} -> ok end,
     stop_node(N5),
     receive {nodedown, N5} -> ok end,
 
     ok = net_kernel:monitor_nodes(true, [{node_type, hidden}]),
-    {ok, N6} = start_node(NN6),
-    {ok, N7} = start_node(NN7, "-hidden"),
+    {ok, N6} = start_node(DCfg, NN6),
+    {ok, N7} = start_node(DCfg, NN7, "-hidden"),
 
 
     receive {nodeup, N6} -> ok end,
@@ -1037,8 +1064,8 @@ monitor_nodes_node_type(Config) when is_list(Config) ->
     ok = net_kernel:monitor_nodes(false, [{node_type, hidden}]),
     ok = net_kernel:monitor_nodes(false),
 
-    {ok, N8} = start_node(NN8),
-    {ok, N9} = start_node(NN9, "-hidden"),
+    {ok, N8} = start_node(DCfg, NN8),
+    {ok, N9} = start_node(DCfg, NN9, "-hidden"),
 
     receive {nodeup, N8, [{node_type, visible}]} -> ok end,
     stop_node(N8),
@@ -1058,6 +1085,9 @@ monitor_nodes_node_type(Config) when is_list(Config) ->
 %%
 
 monitor_nodes_misc(Config) when is_list(Config) ->
+    run_dist_configs(fun monitor_nodes_misc/2, Config).
+
+monitor_nodes_misc(DCfg, _Config) ->
     MonNodeState = monitor_node_state(),
     ok = net_kernel:monitor_nodes(true),
     ok = net_kernel:monitor_nodes(true, [{node_type, all}, nodedown_reason]),
@@ -1065,8 +1095,8 @@ monitor_nodes_misc(Config) when is_list(Config) ->
     Names = get_numbered_nodenames(3, node),
     [NN1, NN2, NN3] = Names,
 
-    {ok, N1} = start_node(NN1),
-    {ok, N2} = start_node(NN2, "-hidden"),
+    {ok, N1} = start_node(DCfg, NN1),
+    {ok, N2} = start_node(DCfg, NN2, "-hidden"),
 
     receive {nodeup, N1} -> ok end,
 
@@ -1092,7 +1122,7 @@ monitor_nodes_misc(Config) when is_list(Config) ->
 
     ok = net_kernel:monitor_nodes(false, [{node_type, all}, nodedown_reason]),
 
-    {ok, N3} = start_node(NN3),
+    {ok, N3} = start_node(DCfg, NN3),
     receive {nodeup, N3} -> ok end,
     stop_node(N3),
     receive {nodedown, N3} -> ok end,
@@ -1107,15 +1137,18 @@ monitor_nodes_misc(Config) when is_list(Config) ->
 %% messages from Node and that {nodedown, Node} messages are
 %% received after messages from Node.
 monitor_nodes_otp_6481(Config) when is_list(Config) ->
+    run_dist_configs(fun monitor_nodes_otp_6481/2, Config).
+
+monitor_nodes_otp_6481(DCfg, Config) ->
     io:format("Testing nodedown...~n"),
-    monitor_nodes_otp_6481_test(Config, nodedown),
+    monitor_nodes_otp_6481_test(DCfg, Config, nodedown),
     io:format("ok~n"),
     io:format("Testing nodeup...~n"),
-    monitor_nodes_otp_6481_test(Config, nodeup),
+    monitor_nodes_otp_6481_test(DCfg, Config, nodeup),
     io:format("ok~n"),
     ok.
 
-monitor_nodes_otp_6481_test(Config, TestType) when is_list(Config) ->
+monitor_nodes_otp_6481_test(DCfg, Config, TestType) when is_list(Config) ->
     MonNodeState = monitor_node_state(),
     NodeMsg = make_ref(),
     Me = self(),
@@ -1164,7 +1197,7 @@ monitor_nodes_otp_6481_test(Config, TestType) when is_list(Config) ->
 	   end
 	++ MonNodeState,
 
-    {ok, Node} = start_node(Name, "", this),
+    {ok, Node} = start_node(DCfg, Name, "", this),
     receive {nodeup, Node} -> ok end,
 
     RemotePid = spawn(Node,
@@ -1249,17 +1282,20 @@ monitor_nodes_errors(Config) when is_list(Config) ->
     ok.
 
 monitor_nodes_combinations(Config) when is_list(Config) ->
+    run_dist_configs(fun monitor_nodes_combinations/2, Config).
+
+monitor_nodes_combinations(DCfg, _Config) ->
     MonNodeState = monitor_node_state(),
     monitor_nodes_all_comb(true),
     [VisibleName, HiddenName] = get_nodenames(2,
 					      monitor_nodes_combinations),
-    {ok, Visible} = start_node(VisibleName, ""),
+    {ok, Visible} = start_node(DCfg, VisibleName, ""),
     receive_all_comb_nodeup_msgs(visible, Visible),
     no_msgs(),
     stop_node(Visible),
     receive_all_comb_nodedown_msgs(visible, Visible, connection_closed),
     no_msgs(),
-    {ok, Hidden} = start_node(HiddenName, "-hidden"),
+    {ok, Hidden} = start_node(DCfg, HiddenName, "-hidden"),
     receive_all_comb_nodeup_msgs(hidden, Hidden),
     no_msgs(),
     stop_node(Hidden),
@@ -1395,6 +1431,9 @@ monitor_nodes_cleanup(Config) when is_list(Config) ->
     ok.
 
 monitor_nodes_many(Config) when is_list(Config) ->
+    run_dist_configs(fun monitor_nodes_many/2, Config).
+
+monitor_nodes_many(DCfg, _Config) ->
     MonNodeState = monitor_node_state(),
     [Name] = get_nodenames(1, monitor_nodes_many),
     %% We want to perform more than 2^16 net_kernel:monitor_nodes
@@ -1402,7 +1441,7 @@ monitor_nodes_many(Config) when is_list(Config) ->
     No = (1 bsl 16) + 17,
     repeat(fun () -> ok = net_kernel:monitor_nodes(true) end, No),
     No = length(monitor_node_state()) - length(MonNodeState),
-    {ok, Node} = start_node(Name),
+    {ok, Node} = start_node(DCfg, Name),
     repeat(fun () -> receive {nodeup, Node} -> ok end end, No),
     stop_node(Node),
     repeat(fun () -> receive {nodedown, Node} -> ok end end, No),
@@ -1411,8 +1450,118 @@ monitor_nodes_many(Config) when is_list(Config) ->
     MonNodeState = monitor_node_state(),
     ok.
 
+dist_ctrl_proc_smoke(Config) when is_list(Config) ->
+    ThisNode = node(),
+    [Name1, Name2] = get_nodenames(2, dist_ctrl_proc_example_smoke),
+    GetSizeArg = " -gen_tcp_dist_output_loop "
+        ++ atom_to_list(?MODULE) ++ " "
+        ++ "dist_cntrlr_output_test",
+    {ok, Node1} = start_node("", Name1, "-proto_dist gen_tcp"),
+    {ok, Node2} = start_node("", Name2, "-proto_dist gen_tcp" ++ GetSizeArg),
+    pong = rpc:call(Node1, net_adm, ping, [Node2]),
+    NL1 = lists:sort([ThisNode, Node2]),
+    NL2 = lists:sort([ThisNode, Node1]),
+    NL1 = lists:sort(rpc:call(Node1, erlang, nodes, [])),
+    NL2 = lists:sort(rpc:call(Node2, erlang, nodes, [])),
+
+    %% Verify that we actually are executing the distribution
+    %% module we expect and also massage message passing over
+    %% it a bit...
+    Ps1 = rpc:call(Node1, erlang, processes, []),
+    try
+        lists:foreach(
+          fun (P) ->
+                  case rpc:call(Node1, erlang, process_info, [P, current_stacktrace]) of
+                      undefined ->
+                          ok;
+                      {current_stacktrace, StkTrace} ->
+                          lists:foreach(fun ({gen_tcp_dist,
+                                              dist_cntrlr_output_loop,
+                                              2, _}) ->
+                                                io:format("~p ~p~n", [P, StkTrace]),
+                                                throw(found_it);
+                                            (_) ->
+                                                ok
+                                        end, StkTrace)
+                  end
+          end, Ps1),
+        exit({missing, dist_cntrlr_output_loop})
+    catch
+        throw:found_it -> ok
+    end,
+
+    Ps2 = rpc:call(Node2, erlang, processes, []),
+    try
+        lists:foreach(
+          fun (P) ->
+                  case rpc:call(Node2, erlang, process_info, [P, current_stacktrace]) of
+                      undefined ->
+                          ok;
+                      {current_stacktrace, StkTrace} ->
+                          lists:foreach(fun ({erl_distribution_SUITE,
+                                              dist_cntrlr_output_loop,
+                                              2, _}) ->
+                                                io:format("~p ~p~n", [P, StkTrace]),
+                                                throw(found_it);
+                                            (_) ->
+                                                ok
+                                        end, StkTrace)
+                  end
+          end, Ps2),
+        exit({missing, dist_cntrlr_output_loop})
+    catch
+        throw:found_it -> ok
+    end,
+
+    stop_node(Node1),
+    stop_node(Node2),
+    ok.
+
 %% Misc. functions
 
+run_dist_configs(Func, Config) ->
+    GetSizeArg = " -gen_tcp_dist_output_loop "
+        ++ atom_to_list(?MODULE) ++ " "
+        ++ "dist_cntrlr_output_test",
+    lists:map(fun ({DCfgName, DCfg}) ->
+                      io:format("~n~n=== Running ~s configuration ===~n~n",
+                                [DCfgName]),
+                      Func(DCfg, Config)
+              end,
+              [{"default", ""},
+               {"gen_tcp_dist", "-proto_dist gen_tcp"},
+               {"gen_tcp_dist (get_size)", "-proto_dist gen_tcp" ++ GetSizeArg}]).
+
+dist_cntrlr_output_test(DHandle, Socket) ->
+    false = erlang:dist_ctrl_get_opt(DHandle, get_size),
+    false = erlang:dist_ctrl_set_opt(DHandle, get_size, true),
+    true = erlang:dist_ctrl_get_opt(DHandle, get_size),
+    true = erlang:dist_ctrl_set_opt(DHandle, get_size, false),
+    false = erlang:dist_ctrl_get_opt(DHandle, get_size),
+    false = erlang:dist_ctrl_set_opt(DHandle, get_size, true),
+    true = erlang:dist_ctrl_get_opt(DHandle, get_size),
+    dist_cntrlr_output_loop(DHandle, Socket).
+    
+dist_cntrlr_send_data(DHandle, Socket) ->
+    case erlang:dist_ctrl_get_data(DHandle) of
+        none ->
+            erlang:dist_ctrl_get_data_notification(DHandle);
+        {Size, Data} ->
+            Size = erlang:iolist_size(Data),
+            ok = gen_tcp:send(Socket, Data),
+            dist_cntrlr_send_data(DHandle, Socket)
+    end.
+
+dist_cntrlr_output_loop(DHandle, Socket) ->
+    receive
+        dist_data ->
+            %% Outgoing data from this node...
+            dist_cntrlr_send_data(DHandle, Socket);
+        _ ->
+            ok %% Drop garbage message...
+    end,
+    dist_cntrlr_output_loop(DHandle, Socket).
+
 monitor_node_state() ->
     erts_debug:set_internal_state(available_internal_state, true),
     MonitoringNodes = erts_debug:get_internal_state(monitoring_nodes),
@@ -1438,25 +1587,25 @@ print_my_messages() ->
 
 sleep(T) -> receive after T * 1000 -> ok end.	
 
-start_node(Name, Param, this) ->
+start_node(DCfg, Name, Param, this) ->
     NewParam = Param ++ " -pa " ++ filename:dirname(code:which(?MODULE)),
     test_server:start_node(Name, peer, [{args, NewParam}, {erl, [this]}]);
-start_node(Name, Param, "this") ->
-    NewParam = Param ++ " -pa " ++ filename:dirname(code:which(?MODULE)),
+start_node(DCfg, Name, Param, "this") ->
+    NewParam = Param ++ " -pa " ++ filename:dirname(code:which(?MODULE)) ++ " " ++ DCfg,
     test_server:start_node(Name, peer, [{args, NewParam}, {erl, [this]}]);
-start_node(Name, Param, Rel) when is_atom(Rel) ->
-    NewParam = Param ++ " -pa " ++ filename:dirname(code:which(?MODULE)),
+start_node(DCfg, Name, Param, Rel) when is_atom(Rel) ->
+    NewParam = Param ++ " -pa " ++ filename:dirname(code:which(?MODULE)) ++ " " ++ DCfg,
     test_server:start_node(Name, peer, [{args, NewParam}, {erl, [{release, atom_to_list(Rel)}]}]);
-start_node(Name, Param, Rel) when is_list(Rel) ->
-    NewParam = Param ++ " -pa " ++ filename:dirname(code:which(?MODULE)),
+start_node(DCfg, Name, Param, Rel) when is_list(Rel) ->
+    NewParam = Param ++ " -pa " ++ filename:dirname(code:which(?MODULE)) ++ " " ++ DCfg,
     test_server:start_node(Name, peer, [{args, NewParam}, {erl, [{release, Rel}]}]).
 
-start_node(Name, Param) ->
-    NewParam = Param ++ " -pa " ++ filename:dirname(code:which(?MODULE)),
+start_node(DCfg, Name, Param) ->
+    NewParam = Param ++ " -pa " ++ filename:dirname(code:which(?MODULE)) ++ " " ++ DCfg,
     test_server:start_node(Name, slave, [{args, NewParam}]).
 
-start_node(Name) ->
-    start_node(Name, "").
+start_node(DCfg, Name) ->
+    start_node(DCfg, Name, "").
 
 stop_node(Node) ->
     test_server:stop_node(Node).
diff --git a/lib/kernel/test/erl_distribution_wb_SUITE.erl b/lib/kernel/test/erl_distribution_wb_SUITE.erl
index 8256444bdc..f3db6705a2 100644
--- a/lib/kernel/test/erl_distribution_wb_SUITE.erl
+++ b/lib/kernel/test/erl_distribution_wb_SUITE.erl
@@ -47,6 +47,9 @@
 	        R
         end).
 
+-define(EPMD_DIST_HIGH, 6).
+-define(EPMD_DIST_LOW, 5).
+
 -define(DFLAG_PUBLISHED,1).
 -define(DFLAG_ATOM_CACHE,2).
 -define(DFLAG_EXTENDED_REFERENCES,4).
@@ -57,15 +60,18 @@
 -define(DFLAG_NEW_FUN_TAGS,16#80).
 -define(DFLAG_EXTENDED_PIDS_PORTS,16#100).
 -define(DFLAG_UTF8_ATOMS, 16#10000).
+-define(DFLAG_BIG_CREATION, 16#40000).
 
 %% From R9 and forward extended references is compulsory
 %% From R10 and forward extended pids and ports are compulsory
 %% From R20 and forward UTF8 atoms are compulsory
 %% From R21 and forward NEW_FUN_TAGS is compulsory (no more tuple fallback {fun, ...})
+%% From R22 and forward BIG_CREATION is compulsory
 -define(COMPULSORY_DFLAGS, (?DFLAG_EXTENDED_REFERENCES bor
                             ?DFLAG_EXTENDED_PIDS_PORTS bor
                             ?DFLAG_UTF8_ATOMS bor
-                            ?DFLAG_NEW_FUN_TAGS)).
+                            ?DFLAG_NEW_FUN_TAGS bor
+                            ?DFLAG_BIG_CREATION)).
 
 -define(PASS_THROUGH, $p).
 
@@ -208,9 +214,9 @@ pending_up_md5(Node,OurName,Cookie) ->
     {ok, SocketA} = gen_tcp:connect(atom_to_list(NB),PortNo,
 				    [{active,false},
 				     {packet,2}]),
-    send_name(SocketA,OurName,5),
+    send_name(SocketA,OurName, ?EPMD_DIST_HIGH),
     ok = recv_status(SocketA),
-    {hidden,Node,5,HisChallengeA} = recv_challenge(SocketA), % See 1)
+    {hidden,Node,?EPMD_DIST_HIGH,HisChallengeA} = recv_challenge(SocketA), % See 1)
     OurChallengeA = gen_challenge(),
     OurDigestA = gen_digest(HisChallengeA, Cookie),
     send_challenge_reply(SocketA, OurChallengeA, OurDigestA),
@@ -224,11 +230,11 @@ pending_up_md5(Node,OurName,Cookie) ->
     {ok, SocketB} = gen_tcp:connect(atom_to_list(NB),PortNo,
 				    [{active,false},
 				     {packet,2}]),
-    send_name(SocketB,OurName,5),
+    send_name(SocketB,OurName, ?EPMD_DIST_HIGH),
     alive = recv_status(SocketB),
     send_status(SocketB, true),
     gen_tcp:close(SocketA),
-    {hidden,Node,5,HisChallengeB} = recv_challenge(SocketB), % See 1)
+    {hidden,Node,?EPMD_DIST_HIGH,HisChallengeB} = recv_challenge(SocketB), % See 1)
     OurChallengeB = gen_challenge(),
     OurDigestB = gen_digest(HisChallengeB, Cookie),
     send_challenge_reply(SocketB, OurChallengeB, OurDigestB),
@@ -254,7 +260,7 @@ simultaneous_md5(Node, OurName, Cookie) when OurName < Node ->
 		  Else ->
 		      exit(Else)
 	      end,
-    EpmdSocket = register(OurName, LSocket, 1, 5),
+    EpmdSocket = register_node(OurName, LSocket, ?EPMD_DIST_LOW, ?EPMD_DIST_HIGH),
     {NA, NB} = split(Node),
     rpc:cast(Node, net_adm, ping, [OurName]),
     receive after 1000 -> ok end,
@@ -262,7 +268,7 @@ simultaneous_md5(Node, OurName, Cookie) when OurName < Node ->
     {ok, SocketA} = gen_tcp:connect(atom_to_list(NB),PortNo,
 				    [{active,false},
 				     {packet,2}]),
-    send_name(SocketA,OurName,5),
+    send_name(SocketA,OurName, ?EPMD_DIST_HIGH),
     %% We are still not marked up on the other side, as our first message 
     %% is not sent.
     SocketB = case gen_tcp:accept(LSocket) of
@@ -275,11 +281,11 @@ simultaneous_md5(Node, OurName, Cookie) when OurName < Node ->
     %% Now we are expected to close A
     gen_tcp:close(SocketA),
     %% But still Socket B will continue
-    {normal,Node,5} = recv_name(SocketB),  % See 1)
+    {normal,Node,?EPMD_DIST_HIGH} = recv_name(SocketB),  % See 1)
     send_status(SocketB, ok_simultaneous),
     MyChallengeB = gen_challenge(),
-    send_challenge(SocketB, OurName, MyChallengeB,5),
-    HisChallengeB = recv_challenge_reply(SocketB, MyChallengeB, Cookie),
+    send_challenge(SocketB, OurName, MyChallengeB, ?EPMD_DIST_HIGH),
+    {ok,HisChallengeB} = recv_challenge_reply(SocketB, MyChallengeB, Cookie),
     DigestB = gen_digest(HisChallengeB,Cookie),
     send_challenge_ack(SocketB, DigestB),
     inet:setopts(SocketB, [{active, false},
@@ -301,7 +307,8 @@ simultaneous_md5(Node, OurName, Cookie) when OurName > Node ->
 		  Else ->
 		      exit(Else)
 	      end,
-    EpmdSocket = register(OurName, LSocket, 1, 5),
+    EpmdSocket = register_node(OurName, LSocket,
+                               ?EPMD_DIST_LOW, ?EPMD_DIST_HIGH),
     {NA, NB} = split(Node),
     rpc:cast(Node, net_adm, ping, [OurName]),
     receive after 1000 -> ok end,
@@ -315,16 +322,16 @@ simultaneous_md5(Node, OurName, Cookie) when OurName > Node ->
 		  Else2 ->
 		      exit(Else2)
 	      end,
-    send_name(SocketA,OurName,5),
+    send_name(SocketA,OurName, ?EPMD_DIST_HIGH),
     ok_simultaneous = recv_status(SocketA),
     %% Socket B should die during this
     case catch begin
-		   {normal,Node,5} = recv_name(SocketB),  % See 1)
+		   {normal,Node,?EPMD_DIST_HIGH} = recv_name(SocketB),  % See 1)
 		   send_status(SocketB, ok_simultaneous),
 		   MyChallengeB = gen_challenge(),
 		   send_challenge(SocketB, OurName, MyChallengeB,
 				  5),
-		   HisChallengeB = recv_challenge_reply(
+		   {ok,HisChallengeB} = recv_challenge_reply(
 				     SocketB,
 				     MyChallengeB,
 				     Cookie),
@@ -346,7 +353,7 @@ simultaneous_md5(Node, OurName, Cookie) when OurName > Node ->
     end,
     gen_tcp:close(SocketB),
     %% But still Socket A will continue
-    {hidden,Node,5,HisChallengeA} = recv_challenge(SocketA), % See 1)
+    {hidden,Node,?EPMD_DIST_HIGH,HisChallengeA} = recv_challenge(SocketA), % See 1)
     OurChallengeA = gen_challenge(),
     OurDigestA = gen_digest(HisChallengeA, Cookie),
     send_challenge_reply(SocketA, OurChallengeA, OurDigestA),
@@ -372,7 +379,7 @@ missing_compulsory_dflags(Config) when is_list(Config) ->
 				    [{active,false},
 				     {packet,2}]),
     BadNode = list_to_atom(atom_to_list(Name2)++"@"++atom_to_list(NB)),
-    send_name(SocketA,BadNode,5,0),
+    send_name(SocketA,BadNode, ?EPMD_DIST_HIGH, 0),
     not_allowed = recv_status(SocketA),
     gen_tcp:close(SocketA),
     stop_node(Node),
@@ -516,16 +523,16 @@ send_challenge_reply(Socket, Challenge, Digest) ->
 
 recv_challenge_reply(Socket, ChallengeA, Cookie) ->
     case gen_tcp:recv(Socket, 0) of
-	{ok,[$r,CB3,CB2,CB1,CB0 | SumB]} when length(SumB) == 16 ->
+	{ok,[$r,CB3,CB2,CB1,CB0 | SumB]=Data} when length(SumB) == 16 ->
 	    SumA = gen_digest(ChallengeA, Cookie),
 	    ChallengeB = ?u32(CB3,CB2,CB1,CB0),
 	    if SumB == SumA ->
-		    ChallengeB;
+		    {ok,ChallengeB};
 	       true ->
-		    ?shutdown(bad_challenge_reply)
+		    {error,Data}
 	    end;
-	_ ->
-	    ?shutdown(no_node)
+	Err ->
+            {error,Err}
     end.
 
 send_challenge_ack(Socket, Digest) ->
@@ -620,6 +627,13 @@ wait_for_reg_reply(Socket, SoFar) ->
     receive
 	{tcp, Socket, Data0} ->
 	    case SoFar ++ Data0 of
+		[$v, Result, A, B, C, D] ->
+		    case Result of
+			0 ->
+			    {alive, Socket, ?u32(A, B, C, D)};
+			_ ->
+			    {error, duplicate_name}
+		    end;
 		[$y, Result, A, B] ->
 		    case Result of
 			0 ->
@@ -640,7 +654,7 @@ wait_for_reg_reply(Socket, SoFar) ->
     end.
 
 
-register(NodeName, ListenSocket, VLow, VHigh) ->
+register_node(NodeName, ListenSocket, VLow, VHigh) ->
     {ok,{_,TcpPort}} = inet:sockname(ListenSocket),
     case do_register_node(NodeName, TcpPort, VLow, VHigh) of
 	{alive, Socket, _Creation} ->
diff --git a/lib/kernel/test/file_SUITE.erl b/lib/kernel/test/file_SUITE.erl
index a51025cba6..3bc8e6e828 100644
--- a/lib/kernel/test/file_SUITE.erl
+++ b/lib/kernel/test/file_SUITE.erl
@@ -2191,6 +2191,9 @@ unc_paths(Config) when is_list(Config) ->
             {ok, _} = file:read_file_info("C:\\Windows\\explorer.exe"),
             {ok, _} = file:read_file_info("\\\\localhost\\c$\\Windows\\explorer.exe"),
 
+            {ok, Files} = file:list_dir("C:\\Windows\\"),
+            {ok, Files} = file:list_dir("\\\\localhost\\c$\\Windows\\"),
+
             {ok, Cwd} = file:get_cwd(),
 
             try
@@ -3741,19 +3744,33 @@ otp_10852(Config) when is_list(Config) ->
     ok = rpc_call(Node, read_file, [B]),
     ok = rpc_call(Node, make_link, [B,B]),
     case rpc_call(Node, make_symlink, [B,B]) of
-	ok -> ok;
-	{error, E} when (E =:= enotsup) or (E =:= eperm) ->
-	    {win32,_} = os:type()
+        {error, eilseq} ->
+            %% Some versions of OS X refuse to create files with illegal names.
+            {unix,darwin} = os:type();
+        {error, eperm} ->
+            %% The test user might not have permission to create symlinks.
+            {win32,_} = os:type();
+        ok ->
+            ok
     end,
     ok = rpc_call(Node, delete, [B]),
-    ok = rpc_call(Node, make_dir, [B]),
+    case rpc_call(Node, make_dir, [B]) of
+        {error, eilseq} ->
+            {unix,darwin} = os:type();
+        ok ->
+            ok
+    end,
     ok = rpc_call(Node, del_dir, [B]),
-    ok = rpc_call(Node, write_file, [B,B]),
-    {ok, Fd} = rpc_call(Node, open, [B,[read]]),
-    ok = rpc_call(Node, close, [Fd]),
-    {ok,0} = rpc_call(Node, copy, [B,B]),
-    {ok, Fd2, B} = rpc_call(Node, path_open, [["."], B, [read]]),
-    ok = rpc_call(Node, close, [Fd2]),
+    case rpc_call(Node, write_file, [B,B]) of
+        {error, eilseq} ->
+            {unix,darwin} = os:type();
+        ok ->
+            {ok, Fd} = rpc_call(Node, open, [B,[read]]),
+            ok = rpc_call(Node, close, [Fd]),
+            {ok,0} = rpc_call(Node, copy, [B,B]),
+            {ok, Fd2, B} = rpc_call(Node, path_open, [["."], B, [read]]),
+            ok = rpc_call(Node, close, [Fd2])
+    end,
     true = test_server:stop_node(Node),
     ok.
 
@@ -4497,15 +4514,18 @@ run_large_file_test(Config, Run, Name) ->
 	{{unix,sunos},OsVersion} when OsVersion < {5,5,1} ->
 	    {skip,"Only supported on Win32, Unix or SunOS >= 5.5.1"};
 	{{unix,_},_} ->
-	    N = disc_free(proplists:get_value(priv_dir, Config)),
-	    io:format("Free disk: ~w KByte~n", [N]),
-	    if N < 5 * (1 bsl 20) ->
-		    %% Less than 5 GByte free
-		    {skip,"Less than 5 GByte free"};
-	       true ->
-		    do_run_large_file_test(Config, Run, Name)
-	    end;
-	_ -> 
+            case disc_free(proplists:get_value(priv_dir, Config)) of
+                error ->
+                    {skip, "Failed to query disk space for priv_dir. "
+                           "Is it on a remote file system?~n"};
+                N when N >= 5 * (1 bsl 20) ->
+                    ct:pal("Free disk: ~w KByte~n", [N]),
+                    do_run_large_file_test(Config, Run, Name);
+                N when N < 5 * (1 bsl 20) ->
+                    ct:pal("Free disk: ~w KByte~n", [N]),
+                    {skip,"Less than 5 GByte free"}
+            end;
+	_ ->
 	    {skip,"Only supported on Win32, Unix or SunOS >= 5.5.1"}
     end.
 
@@ -4539,12 +4559,18 @@ do_run_large_file_test(Config, Run, Name0) ->
 
 disc_free(Path) ->
     Data = disksup:get_disk_data(),
-    {_,Tot,Perc} = hd(lists:filter(
-			fun({P,_Size,_Full}) ->
-				lists:prefix(filename:nativename(P),
-					     filename:nativename(Path))
-			end, lists:reverse(lists:sort(Data)))),
-    round(Tot * (1-(Perc/100))).
+
+    %% What partitions could Data be mounted on?
+    Partitions =
+        [D || {P, _Tot, _Perc}=D <- Data,
+         lists:prefix(filename:nativename(P), filename:nativename(Path))],
+
+    %% Sorting in descending order places the partition with the most specific
+    %% path first.
+    case lists:sort(fun erlang:'>='/2, Partitions) of
+        [{_,Tot, Perc} | _] -> round(Tot * (1-(Perc/100)));
+        [] -> error
+    end.
 
 memsize() ->
     {Tot,_Used,_}  = memsup:get_memory_data(),
diff --git a/lib/kernel/test/file_name_SUITE.erl b/lib/kernel/test/file_name_SUITE.erl
index 3afc647081..26cfd187c7 100644
--- a/lib/kernel/test/file_name_SUITE.erl
+++ b/lib/kernel/test/file_name_SUITE.erl
@@ -632,10 +632,13 @@ make_icky_dir(Mod, IckyDirName) ->
 
 hopeless_darwin() ->
     case {os:type(),os:version()} of
-	{{unix,darwin},{Major,_,_}} when Major < 9 ->
-	    true;
-	_ ->
-	    false
+        {{unix,darwin},{Major,_,_}} ->
+            %% icky file names worked between 10 and 17, but started returning
+            %% EILSEQ in 18. The check against 18 is exact in case newer
+            %% versions of Darwin support them again.
+            Major < 9 orelse Major =:= 18;
+        _ ->
+            false
     end.
 
 make_very_icky_dir(Mod, DirName) ->
diff --git a/lib/kernel/test/gen_sctp_SUITE.erl b/lib/kernel/test/gen_sctp_SUITE.erl
index a0ae792ba9..e4c489bd10 100644
--- a/lib/kernel/test/gen_sctp_SUITE.erl
+++ b/lib/kernel/test/gen_sctp_SUITE.erl
@@ -1459,11 +1459,11 @@ do_open_and_connect(ServerAddresses, AddressToConnectTo) ->
     do_open_and_connect(ServerAddresses, AddressToConnectTo, Fun).
 %%
 do_open_and_connect(ServerAddresses, AddressToConnectTo, Fun) ->
-    ServerFamily = get_family_by_addrs(ServerAddresses),
+    {ServerFamily, ServerOpts} = get_family_by_addrs(ServerAddresses),
     io:format("Serving ~p addresses: ~p~n",
 	      [ServerFamily, ServerAddresses]),
     S1 = ok(gen_sctp:open(0, [{ip,Addr} || Addr <- ServerAddresses] ++
-			      [ServerFamily])),
+			      [ServerFamily|ServerOpts])),
     ok = gen_sctp:listen(S1, true),
     P1 = ok(inet:port(S1)),
     ClientFamily = get_family_by_addr(AddressToConnectTo),
@@ -1493,9 +1493,9 @@ do_open_and_connect(ServerAddresses, AddressToConnectTo, Fun) ->
 %% If at least one of the addresses is an ipv6 address, return inet6, else inet.
 get_family_by_addrs(Addresses) ->
     case lists:usort([get_family_by_addr(Addr) || Addr <- Addresses]) of
-	[inet, inet6] -> inet6;
-	[inet]        -> inet;
-	[inet6]       -> inet6
+	[inet, inet6] -> {inet6, [{ipv6_v6only, false}]};
+	[inet]        -> {inet,  []};
+	[inet6]       -> {inet6, []}
     end.
 
 get_family_by_addr(Addr) when tuple_size(Addr) =:= 4 -> inet;
diff --git a/lib/kernel/test/gen_tcp_api_SUITE_data/gen_tcp_api_SUITE.c b/lib/kernel/test/gen_tcp_api_SUITE_data/gen_tcp_api_SUITE.c
index b91dca61d4..96938f9071 100644
--- a/lib/kernel/test/gen_tcp_api_SUITE_data/gen_tcp_api_SUITE.c
+++ b/lib/kernel/test/gen_tcp_api_SUITE_data/gen_tcp_api_SUITE.c
@@ -30,6 +30,7 @@
 #define sock_close(s) closesocket(s)
 #else
 #include <sys/socket.h>
+#include <unistd.h>
 #define sock_close(s) close(s)
 #endif
 
diff --git a/lib/kernel/test/gen_tcp_misc_SUITE.erl b/lib/kernel/test/gen_tcp_misc_SUITE.erl
index 244bd7e2a0..edf30448c4 100644
--- a/lib/kernel/test/gen_tcp_misc_SUITE.erl
+++ b/lib/kernel/test/gen_tcp_misc_SUITE.erl
@@ -53,7 +53,7 @@
 	 active_once_closed/1, send_timeout/1, send_timeout_active/1,
          otp_7731/1, zombie_sockets/1, otp_7816/1, otp_8102/1,
          wrapping_oct/0, wrapping_oct/1, otp_9389/1, otp_13939/1,
-         otp_12242/1]).
+         otp_12242/1, delay_send_error/1]).
 
 %% Internal exports.
 -export([sender/3, not_owner/1, passive_sockets_server/2, priority_server/1, 
@@ -97,7 +97,7 @@ all() ->
      active_once_closed, send_timeout, send_timeout_active, otp_7731,
      wrapping_oct,
      zombie_sockets, otp_7816, otp_8102, otp_9389,
-     otp_12242].
+     otp_12242, delay_send_error].
 
 groups() -> 
     [].
@@ -2086,8 +2086,39 @@ test_pktoptions(Family, Spec, CheckConnect, OSType, OSVer) ->
 %%%    {ok,<<"hi">>} = gen_tcp:recv(S1, 2, Timeout),
     %%
     %% Verify returned remote options
-    {ok,[{pktoptions,OptsVals1}]} = inet:getopts(S1, [pktoptions]),
-    {ok,[{pktoptions,OptsVals2}]} = inet:getopts(S2, [pktoptions]),
+    VerifyRemOpts =
+        fun(S, Role) ->
+                case inet:getopts(S, [pktoptions]) of
+                    {ok, [{pktoptions, PktOpts1}]} ->
+                        PktOpts1;
+                    {ok, UnexpOK1} ->
+                        io:format("Unexpected OK (~w): "
+                                  "~n   ~p"
+                                  "~n", [Role, UnexpOK1]),
+                        exit({unexpected_getopts_ok,
+                              Role,
+                              Spec,
+                              TrueRecvOpts,
+                              OptsVals,
+                              OptsValsDefault,
+                              UnexpOK1});
+                    {error, UnexpERR1} ->
+                        io:format("Unexpected ERROR (~w): "
+                                  "~n   ~p"
+                                  "~n", [Role, UnexpERR1]),
+                        exit({unexpected_getopts_failure,
+                              Role,
+                              Spec,
+                              TrueRecvOpts,
+                              OptsVals,
+                              OptsValsDefault,
+                              UnexpERR1})
+                end
+        end,
+    OptsVals1 = VerifyRemOpts(S1, dest),
+    OptsVals2 = VerifyRemOpts(S2, orig),
+    %% {ok,[{pktoptions,OptsVals1}]} = inet:getopts(S1, [pktoptions]),
+    %% {ok,[{pktoptions,OptsVals2}]} = inet:getopts(S2, [pktoptions]),
     (Result1 = sets_eq(OptsVals1, OptsVals))
         orelse io:format(
                  "Accept differs: ~p neq ~p~n", [OptsVals1,OptsVals]),
@@ -3427,3 +3458,32 @@ otp_12242(Addr) when tuple_size(Addr) =:= 4 ->
 
 wait(Mref) ->
     receive {'DOWN',Mref,_,_,Reason} -> Reason end.
+
+%% OTP-15536
+%% Test that send error works correctly for delay_send
+delay_send_error(_Config) ->
+    {ok, LS} = gen_tcp:listen(0, [{reuseaddr, true}, {packet, 1}, {active, false}]),
+    {ok,{{0,0,0,0},PortNum}}=inet:sockname(LS),
+    P = spawn_link(
+          fun() ->
+                  {ok, S} = gen_tcp:accept(LS),
+                  receive die -> gen_tcp:close(S) end
+          end),
+    erlang:monitor(process, P),
+    {ok, S} = gen_tcp:connect("localhost", PortNum,
+                              [{packet, 1}, {active, false}, {delay_send, true}]),
+
+    %% Do a couple of sends first to see that it works
+    ok = gen_tcp:send(S, "hello"),
+    ok = gen_tcp:send(S, "hello"),
+    ok = gen_tcp:send(S, "hello"),
+
+    %% Make the receiver close
+    P ! die,
+    receive _Down -> ok end,
+
+    ok = gen_tcp:send(S, "hello"),
+    timer:sleep(500), %% Sleep in order for delay_send to have time to trigger
+
+    %% This used to result in a double free
+    {error, closed} = gen_tcp:send(S, "hello").
diff --git a/lib/kernel/test/inet_SUITE.erl b/lib/kernel/test/inet_SUITE.erl
index f436eafad3..44ec7e7076 100644
--- a/lib/kernel/test/inet_SUITE.erl
+++ b/lib/kernel/test/inet_SUITE.erl
@@ -21,6 +21,7 @@
 
 -include_lib("common_test/include/ct.hrl").
 -include_lib("kernel/include/inet.hrl").
+-include_lib("kernel/src/inet_res.hrl").
 -include_lib("kernel/src/inet_dns.hrl").
 
 -export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1, 
@@ -34,7 +35,7 @@
 	 ipv4_to_ipv6/0, ipv4_to_ipv6/1,
 	 host_and_addr/0, host_and_addr/1,
 	 t_gethostnative/1, 
-	 gethostnative_parallell/1, cname_loop/1, 
+	 gethostnative_parallell/1, cname_loop/1, missing_hosts_reload/1,
          gethostnative_soft_restart/0, gethostnative_soft_restart/1,
 	 gethostnative_debug_level/0, gethostnative_debug_level/1,
 	 lookup_bad_search_option/1,
@@ -56,7 +57,7 @@ all() ->
     [t_gethostbyaddr, t_gethostbyname, t_getaddr,
      t_gethostbyaddr_v6, t_gethostbyname_v6, t_getaddr_v6,
      ipv4_to_ipv6, host_and_addr, {group, parse},
-     t_gethostnative, gethostnative_parallell, cname_loop,
+     t_gethostnative, gethostnative_parallell, cname_loop, missing_hosts_reload,
      gethostnative_debug_level, gethostnative_soft_restart,
      lookup_bad_search_option,
      getif, getif_ifr_name_overflow, getservbyname_overflow,
@@ -97,7 +98,7 @@ end_per_group(_GroupName, Config) ->
 init_per_testcase(lookup_bad_search_option, Config) ->
     Db = inet_db,
     Key = res_lookup,
-    %% The bad option can not enter through inet_db:set_lookup/1,
+    %% The bad option cannot enter through inet_db:set_lookup/1,
     %% but through e.g .inetrc.
     Prev = ets:lookup(Db, Key),
     ets:delete(Db, Key),
@@ -840,6 +841,32 @@ cname_loop(Config) when is_list(Config) ->
     ok.
 
 
+%% Test that hosts file gets reloaded correctly in case when it
+% was missing during initial startup
+missing_hosts_reload(Config) when is_list(Config) ->
+    RootDir = proplists:get_value(priv_dir,Config),
+    HostsFile = filename:join(RootDir, atom_to_list(?MODULE) ++ ".hosts"),
+    InetRc = filename:join(RootDir, "inetrc"),
+    ok = file:write_file(InetRc, "{hosts_file, \"" ++ HostsFile ++ "\"}.\n"),
+    {error, enoent} = file:read_file_info(HostsFile),
+    % start a node
+    Pa = filename:dirname(code:which(?MODULE)),
+    {ok, TestNode} = test_server:start_node(?MODULE, slave,
+        [{args, "-pa " ++ Pa ++ " -kernel inetrc '\"" ++ InetRc ++ "\"'"}]),
+    % ensure it has our RC
+    Rc = rpc:call(TestNode, inet_db, get_rc, []),
+    {hosts_file, HostsFile} = lists:keyfind(hosts_file, 1, Rc),
+    % ensure it does not resolve
+    {error, nxdomain} = rpc:call(TestNode, inet_hosts, gethostbyname, ["somehost"]),
+    % write hosts file
+    ok = file:write_file(HostsFile, "1.2.3.4 somehost"),
+    % wait for cached timestamp to expire
+    timer:sleep(?RES_FILE_UPDATE_TM * 1000 + 100),
+    % ensure it DOES resolve
+    {ok,{hostent,"somehost",[],inet,4,[{1,2,3,4}]}} =
+        rpc:call(TestNode, inet_hosts, gethostbyname, ["somehost"]),
+    % cleanup
+    true = test_server:stop_node(TestNode).
 
 %% These must be run in the whole suite since they need
 %% the host list and require inet_gethost_native to be started.
diff --git a/lib/kernel/test/inet_res_SUITE.erl b/lib/kernel/test/inet_res_SUITE.erl
index df6e48abae..cbec8d430c 100644
--- a/lib/kernel/test/inet_res_SUITE.erl
+++ b/lib/kernel/test/inet_res_SUITE.erl
@@ -531,7 +531,7 @@ edns0(Config) when is_list(Config) ->
 		    case os:version() of
 			{M,V,_} when M < 5;  M == 5, V =< 8 ->
 			    %% In our test park only known platform
-			    %% with an DNS resolver that can not do
+			    %% with an DNS resolver that cannot do
 			    %% EDNS0.
 			    {comment,"No EDNS0"}
 		    end
diff --git a/lib/kernel/test/init_SUITE.erl b/lib/kernel/test/init_SUITE.erl
index 6a006cdc01..a0154b2694 100644
--- a/lib/kernel/test/init_SUITE.erl
+++ b/lib/kernel/test/init_SUITE.erl
@@ -295,7 +295,7 @@ is_real_system(KernelVsn, StdlibVsn) ->
 %% before restart.
 %% ------------------------------------------------
 many_restarts() ->
-    [{timetrap,{minutes,8}}].
+    [{timetrap,{minutes,16}}].
 
 many_restarts(Config) when is_list(Config) ->
     {ok, Node} = loose_node:start(init_test, "", ?DEFAULT_TIMEOUT_SEC),
@@ -315,7 +315,7 @@ loop_restart(N,Node,EHPid) ->
 	    loose_node:stop(Node),
 	    ct:fail(not_stopping)
     end,
-    ok = wait_for(30, Node, EHPid),
+    ok = wait_for(60, Node, EHPid),
     loop_restart(N-1,Node,rpc:call(Node,erlang,whereis,[logger])).
 
 wait_for(0,Node,_) ->
@@ -367,7 +367,8 @@ restart(Config) when is_list(Config) ->
     SysProcs0 = rpc:call(Node, ?MODULE, find_system_processes, []),
     io:format("SysProcs0=~p~n", [SysProcs0]),
     [InitPid, PurgerPid, LitCollectorPid,
-     DirtySigNPid, DirtySigHPid, DirtySigMPid] = SysProcs0,
+     DirtySigNPid, DirtySigHPid, DirtySigMPid,
+     PrimFilePid] = SysProcs0,
     InitPid = rpc:call(Node, erlang, whereis, [init]),
     PurgerPid = rpc:call(Node, erlang, whereis, [erts_code_purger]),
     Procs = rpc:call(Node, erlang, processes, []),
@@ -385,7 +386,8 @@ restart(Config) when is_list(Config) ->
     SysProcs1 = rpc:call(Node, ?MODULE, find_system_processes, []),
     io:format("SysProcs1=~p~n", [SysProcs1]),
     [InitPid1, PurgerPid1, LitCollectorPid1,
-     DirtySigNPid1, DirtySigHPid1, DirtySigMPid1] = SysProcs1,
+     DirtySigNPid1, DirtySigHPid1, DirtySigMPid1,
+     PrimFilePid1] = SysProcs1,
 
     %% Still the same init process!
     InitPid1 = rpc:call(Node, erlang, whereis, [init]),
@@ -411,6 +413,10 @@ restart(Config) when is_list(Config) ->
     DirtySigMP = pid_to_list(DirtySigMPid),
     DirtySigMP = pid_to_list(DirtySigMPid1),
 
+    %% and same prim_file helper process!
+    PrimFileP = pid_to_list(PrimFilePid),
+    PrimFileP = pid_to_list(PrimFilePid1),
+
     NewProcs0 = rpc:call(Node, erlang, processes, []),
     NewProcs = NewProcs0 -- SysProcs1,
     case check_processes(NewProcs, MaxPid) of
@@ -437,7 +443,8 @@ restart(Config) when is_list(Config) ->
 		    literal_collector,
 		    dirty_sig_handler_normal,
 		    dirty_sig_handler_high,
-		    dirty_sig_handler_max}).
+		    dirty_sig_handler_max,
+                    prim_file}).
 
 find_system_processes() ->
     find_system_procs(processes(), #sys_procs{}).
@@ -448,10 +455,11 @@ find_system_procs([], SysProcs) ->
      SysProcs#sys_procs.literal_collector,
      SysProcs#sys_procs.dirty_sig_handler_normal,
      SysProcs#sys_procs.dirty_sig_handler_high,
-     SysProcs#sys_procs.dirty_sig_handler_max];
+     SysProcs#sys_procs.dirty_sig_handler_max,
+     SysProcs#sys_procs.prim_file];
 find_system_procs([P|Ps], SysProcs) ->
     case process_info(P, [initial_call, priority]) of
-	[{initial_call,{otp_ring0,start,2}},_] ->
+	[{initial_call,{erl_init,start,2}},_] ->
 	    undefined = SysProcs#sys_procs.init,
 	    find_system_procs(Ps, SysProcs#sys_procs{init = P});
 	[{initial_call,{erts_code_purger,start,0}},_] ->
@@ -472,6 +480,9 @@ find_system_procs([P|Ps], SysProcs) ->
          {priority,max}] ->
 	    undefined = SysProcs#sys_procs.dirty_sig_handler_max,
 	    find_system_procs(Ps, SysProcs#sys_procs{dirty_sig_handler_max = P});
+        [{initial_call,{prim_file,start,0}},_] ->
+	    undefined = SysProcs#sys_procs.prim_file,
+	    find_system_procs(Ps, SysProcs#sys_procs{prim_file = P});
 	_ ->
 	    find_system_procs(Ps, SysProcs)
     end.
diff --git a/lib/kernel/test/kernel.spec b/lib/kernel/test/kernel.spec
index 62afc9f97b..eaa17f3a59 100644
--- a/lib/kernel/test/kernel.spec
+++ b/lib/kernel/test/kernel.spec
@@ -2,3 +2,4 @@
 {config, "../test_server/ts.unix.config"}.
 
 {suites,"../kernel_test", all}.
+{skip_suites,"../kernel_test",[logger_stress_SUITE],"Benchmarks only"}.
diff --git a/lib/kernel/test/kernel_bench.spec b/lib/kernel/test/kernel_bench.spec
index 4de133f21b..898ceb59e0 100644
--- a/lib/kernel/test/kernel_bench.spec
+++ b/lib/kernel/test/kernel_bench.spec
@@ -1,2 +1,3 @@
 {groups,"../kernel_test",zlib_SUITE,[bench]}.
 {groups,"../kernel_test",file_SUITE,[bench]}.
+{suites,"../kernel_test",[logger_stress_SUITE]}.
diff --git a/lib/kernel/test/kernel_config_SUITE.erl b/lib/kernel/test/kernel_config_SUITE.erl
index 9207025a2c..57c44c2498 100644
--- a/lib/kernel/test/kernel_config_SUITE.erl
+++ b/lib/kernel/test/kernel_config_SUITE.erl
@@ -21,7 +21,8 @@
 
 -include_lib("common_test/include/ct.hrl").
 
--export([all/0, suite/0,groups/0,init_per_group/2,end_per_group/2, sync/1]).
+-export([all/0, suite/0,groups/0,init_per_group/2,end_per_group/2,
+	 start_distribution_false/1, sync/1]).
 
 -export([init_per_suite/1, end_per_suite/1]).
 
@@ -30,7 +31,7 @@ suite() ->
      {timetrap,{minutes,2}}].
 
 all() -> 
-    [sync].
+    [sync, start_distribution_false].
 
 groups() -> 
     [].
@@ -59,12 +60,9 @@ from(H, [H | T]) -> T;
 from(H, [_ | T]) -> from(H, T);
 from(_, []) -> [].
 
-%%-----------------------------------------------------------------
-%% Test suite for sync_nodes.   This is quite tricky.
-%%
+%% Test sync_nodes. This is quite tricky.
 %% Should be started in a CC view with:
 %% erl -sname XXX where XX not in [cp1, cp2]
-%%-----------------------------------------------------------------
 sync(Conf) when is_list(Conf) ->
     %% Write a config file
     Dir = proplists:get_value(priv_dir,Conf),
@@ -106,9 +104,18 @@ wait_for_node(Node) ->
 	_Other -> wait_for_node(Node)
     end.
 
-
 stop_node(Node) ->
     M = list_to_atom(lists:concat([Node,
 				   [$@],
 				   from($@,atom_to_list(node()))])),
     rpc:cast(M, erlang, halt, []).
+
+start_distribution_false(Config) when is_list(Config) ->
+    %% When distribution is disabled, -sname/-name has no effect
+    Str = os:cmd(ct:get_progname()
+		 ++ " -kernel start_distribution false"
+		 ++ " -sname no_distribution"
+		 ++ " -eval \"erlang:display(node())\""
+		 ++ " -noshell -s erlang halt"),
+    "'nonode@nohost'" ++ _ = Str,
+    ok.
diff --git a/lib/kernel/test/logger.cover b/lib/kernel/test/logger.cover
index 960bc0abff..9691aa295e 100644
--- a/lib/kernel/test/logger.cover
+++ b/lib/kernel/test/logger.cover
@@ -4,9 +4,12 @@
             logger_backend,
             logger_config,
             logger_disk_log_h,
-            logger_h_common,
             logger_filters,
             logger_formatter,
+            logger_handler_watcher,
+            logger_h_common,
+            logger_olp,
+            logger_proxy,
             logger_server,
             logger_simple_h,
             logger_std_h,
diff --git a/lib/kernel/test/logger.spec b/lib/kernel/test/logger.spec
index 1ab90b3e93..3aec37951d 100644
--- a/lib/kernel/test/logger.spec
+++ b/lib/kernel/test/logger.spec
@@ -7,5 +7,7 @@
                            logger_filters_SUITE,
                            logger_formatter_SUITE,
                            logger_legacy_SUITE,
+                           logger_olp_SUITE,
+                           logger_proxy_SUITE,
                            logger_simple_h_SUITE,
                            logger_std_h_SUITE]}.
diff --git a/lib/kernel/test/logger_SUITE.erl b/lib/kernel/test/logger_SUITE.erl
index d831d0d108..035e5d8974 100644
--- a/lib/kernel/test/logger_SUITE.erl
+++ b/lib/kernel/test/logger_SUITE.erl
@@ -101,7 +101,8 @@ all() ->
      compare_levels,
      process_metadata,
      app_config,
-     kernel_config].
+     kernel_config,
+     pretty_print].
 
 start_stop(_Config) ->
     S = whereis(logger),
@@ -898,14 +899,14 @@ process_metadata(_Config) ->
     undefined = logger:get_process_metadata(),
     {error,badarg} = ?TRY(logger:set_process_metadata(bad)),
     ok = logger:add_handler(h1,?MODULE,#{level=>notice,filter_default=>log}),
-    Time = erlang:system_time(microsecond),
+    Time = logger:timestamp(),
     ProcMeta = #{time=>Time,line=>0,custom=>proc},
     ok = logger:set_process_metadata(ProcMeta),
     S1 = ?str,
     ?LOG_NOTICE(S1,#{custom=>macro}),
     check_logged(notice,S1,#{time=>Time,line=>0,custom=>macro}),
 
-    Time2 = erlang:system_time(microsecond),
+    Time2 = logger:timestamp(),
     S2 = ?str,
     ?LOG_NOTICE(S2,#{time=>Time2,line=>1,custom=>macro}),
     check_logged(notice,S2,#{time=>Time2,line=>1,custom=>macro}),
@@ -1047,8 +1048,11 @@ kernel_config(Config) ->
     ok = rpc:call(Node,logger,internal_init_logger,[]),
     ok = rpc:call(Node,logger,add_handlers,[kernel]),
     #{primary:=#{filter_default:=log,filters:=[]},
-      handlers:=[#{id:=default,filters:=DF,config:=#{type:={file,F}}}],
+      handlers:=[#{id:=default,filters:=DF,
+                   config:=#{type:=file,file:=F,modes:=Modes}}],
       module_levels:=[]} = rpc:call(Node,logger,get_config,[]),
+    [append,delayed_write,raw] = lists:sort(Modes),
+
 
     %% Same, but using 'logger' parameter instead of 'error_logger'
     ok = rpc:call(Node,logger,remove_handler,[default]),% so it can be added again
@@ -1059,26 +1063,27 @@ kernel_config(Config) ->
     ok = rpc:call(Node,logger,internal_init_logger,[]),
     ok = rpc:call(Node,logger,add_handlers,[kernel]),
     #{primary:=#{filter_default:=log,filters:=[]},
-      handlers:=[#{id:=default,filters:=DF,config:=#{type:={file,F}}}],
+      handlers:=[#{id:=default,filters:=DF,
+                   config:=#{type:=file,file:=F,modes:=Modes}}],
       module_levels:=[]} = rpc:call(Node,logger,get_config,[]),
 
     %% Same, but with type={file,File,Modes}
     ok = rpc:call(Node,logger,remove_handler,[default]),% so it can be added again
     ok = rpc:call(Node,application,unset_env,[kernel,error_logger]),
-    M = [raw,write,delayed_write],
+    M = [raw,write],
     ok = rpc:call(Node,application,set_env,[kernel,logger,
                                             [{handler,default,logger_std_h,
                                               #{config=>#{type=>{file,F,M}}}}]]),
     ok = rpc:call(Node,logger,internal_init_logger,[]),
     ok = rpc:call(Node,logger,add_handlers,[kernel]),
     #{primary:=#{filter_default:=log,filters:=[]},
-      handlers:=[#{id:=default,filters:=DF,config:=#{type:={file,F,M}}}],
+      handlers:=[#{id:=default,filters:=DF,
+                   config:=#{type:=file,file:=F,modes:=[delayed_write|M]}}],
       module_levels:=[]} = rpc:call(Node,logger,get_config,[]),
 
     %% Same, but with disk_log handler
     ok = rpc:call(Node,logger,remove_handler,[default]),% so it can be added again
     ok = rpc:call(Node,application,unset_env,[kernel,error_logger]),
-    M = [raw,write,delayed_write],
     ok = rpc:call(Node,application,set_env,[kernel,logger,
                                             [{handler,default,logger_disk_log_h,
                                               #{config=>#{file=>F}}}]]),
@@ -1141,6 +1146,61 @@ kernel_config(Config) ->
 
     ok.
 
+pretty_print(Config) ->
+    ok = logger:add_handler(?FUNCTION_NAME,logger_std_h,#{}),
+    ok = logger:set_module_level([module1,module2],debug),
+
+    ct:capture_start(),
+    logger:i(),
+    ct:capture_stop(),
+    I0 = ct:capture_get(),
+
+    ct:capture_start(),
+    logger:i(primary),
+    ct:capture_stop(),
+    IPrim = ct:capture_get(),
+
+    ct:capture_start(),
+    logger:i(handlers),
+    ct:capture_stop(),
+    IHs = ct:capture_get(),
+
+    ct:capture_start(),
+    logger:i(proxy),
+    ct:capture_stop(),
+    IProxy = ct:capture_get(),
+
+    ct:capture_start(),
+    logger:i(modules),
+    ct:capture_stop(),
+    IMs = ct:capture_get(),
+
+    I02 = lists:append([IPrim,IHs,IProxy,IMs]),
+    %% ct:log("~p~n",[I0]),
+    %% ct:log("~p~n",[I02]),
+    I0 = I02,
+
+    ct:capture_start(),
+    logger:i(handlers),
+    ct:capture_stop(),
+    IHs = ct:capture_get(),
+
+    Ids = logger:get_handler_ids(),
+    IHs2 =
+        lists:append(
+          [begin
+               ct:capture_start(),
+               logger:i(Id),
+               ct:capture_stop(),
+               [_|IH] = ct:capture_get(),
+               IH
+           end || Id <- Ids]),
+
+    %% ct:log("~p~n",[IHs]),
+    %% ct:log("~p~n",[["Handler configuration: \n"|IHs2]]),
+    IHs = ["Handler configuration: \n"|IHs2],
+    ok.
+
 %%%-----------------------------------------------------------------
 %%% Internal
 check_logged(Level,Format,Args,Meta) ->
diff --git a/lib/kernel/test/logger_disk_log_h_SUITE.erl b/lib/kernel/test/logger_disk_log_h_SUITE.erl
index 87b8250781..36d98eaa25 100644
--- a/lib/kernel/test/logger_disk_log_h_SUITE.erl
+++ b/lib/kernel/test/logger_disk_log_h_SUITE.erl
@@ -24,6 +24,7 @@
 -include_lib("common_test/include/ct.hrl").
 -include_lib("kernel/include/logger.hrl").
 -include_lib("kernel/src/logger_internal.hrl").
+-include_lib("kernel/src/logger_olp.hrl").
 -include_lib("kernel/src/logger_h_common.hrl").
 -include_lib("stdlib/include/ms_transform.hrl").
 -include_lib("kernel/include/file.hrl").
@@ -97,7 +98,6 @@ all() ->
      formatter_fail,
      config_fail,
      bad_input,
-     info_and_reset,
      reconfig,
      sync,
      disk_log_full,
@@ -293,7 +293,7 @@ logging(Config) ->
     ok = start_and_add(Name, #{filter_default=>log,
                                formatter=>{?MODULE,self()}},
                        #{file => LogFile}),
-    MsgFormatter = fun(Term) -> {io_lib:format("Term:~p",[Term]),[]} end,
+    MsgFormatter = fun(Term) -> {"Term:~p",[Term]} end,
     logger:notice([{x,y}], #{report_cb => MsgFormatter}),
     logger:notice([{x,y}], #{}),
     ct:pal("Checking contents of ~p", [?log_no(LogFile,1)]),   
@@ -306,9 +306,9 @@ logging(cleanup, _Config) ->
 filter_config(_Config) ->
     ok = logger:add_handler(?MODULE,logger_disk_log_h,#{}),
     {ok,#{config:=HConfig}=Config} = logger:get_handler_config(?MODULE),
-    HConfig = maps:without([handler_pid,mode_tab],HConfig),
+    HConfig = maps:without([olp],HConfig),
 
-    FakeFullHConfig = HConfig#{handler_pid=>self(),mode_tab=>erlang:make_ref()},
+    FakeFullHConfig = HConfig#{olp=>{regname,self(),erlang:make_ref()}},
     #{config:=HConfig} =
         logger_disk_log_h:filter_config(Config#{config=>FakeFullHConfig}),
     ok.
@@ -351,9 +351,7 @@ errors(Config) ->
     %% Read-only fields may (accidentially) be included in the change,
     %% but it won't take effect
     {ok,C} = logger:get_handler_config(Name1),
-    ok = logger:set_handler_config(Name1,config,
-                                   #{handler_pid=>self(),
-                                     mode_tab=>erlang:make_ref()}),
+    ok = logger:set_handler_config(Name1,config,#{olp=>dummyvalue}),
     {ok,C} = logger:get_handler_config(Name1),
 
 
@@ -419,19 +417,16 @@ config_fail(_Config) ->
                              filter_default=>log,
                              formatter=>{?MODULE,self()}}),
 
-    {error,{handler_not_added,{invalid_config,logger_disk_log_h,
-                               {invalid_levels,#{drop_mode_qlen:=1}}}}} =
+    {error,{handler_not_added,{invalid_olp_levels,#{drop_mode_qlen:=1}}}} =
         logger:add_handler(?MODULE,logger_disk_log_h,
                            #{config => #{drop_mode_qlen=>1}}),
-    {error,{handler_not_added,{invalid_config,logger_disk_log_h,
-                               {invalid_levels,#{sync_mode_qlen:=43,
-                                                 drop_mode_qlen:=42}}}}} =
+    {error,{handler_not_added,{invalid_olp_levels,#{sync_mode_qlen:=43,
+                                                drop_mode_qlen:=42}}}} =
         logger:add_handler(?MODULE,logger_disk_log_h,
                            #{config => #{sync_mode_qlen=>43,
                                          drop_mode_qlen=>42}}),
-    {error,{handler_not_added,{invalid_config,logger_disk_log_h,
-                               {invalid_levels,#{drop_mode_qlen:=43,
-                                                 flush_qlen:=42}}}}} =
+    {error,{handler_not_added,{invalid_olp_levels,#{drop_mode_qlen:=43,
+                                                flush_qlen:=42}}}} =
         logger:add_handler(?MODULE,logger_disk_log_h,
                            #{config => #{drop_mode_qlen=>43,
                                          flush_qlen=>42}}),
@@ -445,7 +440,7 @@ config_fail(_Config) ->
                                      #{max_no_files=>2}),
     %% incorrect values of OP params
     {ok,#{config := HConfig}} = logger:get_handler_config(?MODULE),
-    {error,{invalid_config,logger_disk_log_h,{invalid_levels,_}}} =
+    {error,{invalid_olp_levels,_}} =
         logger:update_handler_config(?MODULE,config,
                                      HConfig#{sync_mode_qlen=>100,
                                               flush_qlen=>99}),
@@ -459,18 +454,7 @@ config_fail(cleanup,_Config) ->
 
 bad_input(_Config) ->
     {error,{badarg,{filesync,["BadType"]}}} =
-        logger_disk_log_h:filesync("BadType"),
-    {error,{badarg,{info,["BadType"]}}} = logger_disk_log_h:info("BadType"),
-    {error,{badarg,{reset,["BadType"]}}} = logger_disk_log_h:reset("BadType").
-
-info_and_reset(_Config) ->
-    ok = logger:add_handler(?MODULE,logger_disk_log_h,
-                            #{filter_default=>log,
-                              formatter=>{?MODULE,self()}}),
-    #{id := ?MODULE} = logger_disk_log_h:info(?MODULE),
-    ok = logger_disk_log_h:reset(?MODULE).
-info_and_reset(cleanup,_Config) ->
-    logger:remove_handler(?MODULE).
+        logger_disk_log_h:filesync("BadType").
 
 reconfig(Config) ->
     Dir = ?config(priv_dir,Config),
@@ -479,7 +463,7 @@ reconfig(Config) ->
                             #{filter_default=>log,
                               filters=>?DEFAULT_HANDLER_FILTERS([?MODULE]),
                               formatter=>{?MODULE,self()}}),
-    #{id := ?MODULE,
+    #{%id := ?MODULE,
       sync_mode_qlen := ?SYNC_MODE_QLEN,
       drop_mode_qlen := ?DROP_MODE_QLEN,
       flush_qlen := ?FLUSH_QLEN,
@@ -490,13 +474,14 @@ reconfig(Config) ->
       overload_kill_qlen := ?OVERLOAD_KILL_QLEN,
       overload_kill_mem_size := ?OVERLOAD_KILL_MEM_SIZE,
       overload_kill_restart_after := ?OVERLOAD_KILL_RESTART_AFTER,
-      filesync_repeat_interval := ?FILESYNC_REPEAT_INTERVAL,
-      handler_state :=
-          #{log_opts := #{type := ?DISK_LOG_TYPE,
-                          max_no_files := ?DISK_LOG_MAX_NO_FILES,
-                          max_no_bytes := ?DISK_LOG_MAX_NO_BYTES,
-                          file := DiskLogFile}}} =
-        logger_disk_log_h:info(?MODULE),
+      cb_state :=
+          #{handler_state :=
+                #{log_opts := #{type := ?DISK_LOG_TYPE,
+                                max_no_files := ?DISK_LOG_MAX_NO_FILES,
+                                max_no_bytes := ?DISK_LOG_MAX_NO_BYTES,
+                                file := DiskLogFile}},
+            filesync_repeat_interval := ?FILESYNC_REPEAT_INTERVAL}} =
+        logger_olp:info(h_proc_name()),
     {ok,#{config :=
               #{sync_mode_qlen := ?SYNC_MODE_QLEN,
                 drop_mode_qlen := ?DROP_MODE_QLEN,
@@ -527,7 +512,7 @@ reconfig(Config) ->
                          overload_kill_restart_after => infinity,
                          filesync_repeat_interval => no_repeat},
     ok = logger:set_handler_config(?MODULE, config, HConfig1),
-    #{id := ?MODULE,
+    #{%id := ?MODULE,
       sync_mode_qlen := 1,
       drop_mode_qlen := 2,
       flush_qlen := 3,
@@ -538,8 +523,8 @@ reconfig(Config) ->
       overload_kill_qlen := 100000,
       overload_kill_mem_size := 10000000,
       overload_kill_restart_after := infinity,
-      filesync_repeat_interval := no_repeat} =
-        logger_disk_log_h:info(?MODULE),
+      cb_state := #{filesync_repeat_interval := no_repeat}} =
+        logger_olp:info(h_proc_name()),
     {ok,#{config:=HConfig1}} = logger:get_handler_config(?MODULE),
 
     ok = logger:update_handler_config(?MODULE, config,
@@ -577,12 +562,13 @@ reconfig(Config) ->
                                     max_no_files => 1,
                                     max_no_bytes => 1024,
                                     file => File}}),
-    #{handler_state :=
-          #{log_opts := #{type := halt,
-                          max_no_files := 1,
-                          max_no_bytes := 1024,
-                          file := File}}} =
-        logger_disk_log_h:info(?MODULE),
+    #{cb_state :=
+          #{handler_state :=
+                #{log_opts := #{type := halt,
+                                max_no_files := 1,
+                                max_no_bytes := 1024,
+                                file := File}}}} =
+        logger_olp:info(h_proc_name()),
     {ok,#{config :=
               #{type := halt,
                 max_no_files := 1,
@@ -650,13 +636,8 @@ sync(Config) ->
     {ok,#{config := HConfig}} = logger:get_handler_config(?MODULE),
     HConfig1 = HConfig#{filesync_repeat_interval => no_repeat},
     ok = logger:update_handler_config(?MODULE, config, HConfig1),
-
     no_repeat = maps:get(filesync_repeat_interval,
-                         logger_disk_log_h:info(?MODULE)),
-    %% The following timer is to make sure the time from last log
-    %% ("first") to next ("second") is long enough, so the a flush is
-    %% triggered by the idle timeout between "fourth" and "fifth".
-    timer:sleep(?IDLE_DETECT_TIME_MSEC*2),
+                         maps:get(cb_state,logger_olp:info(h_proc_name()))),
 
     start_tracer([{logger_disk_log_h,disk_log_write,3},
                   {disk_log,sync,1}],
@@ -666,10 +647,10 @@ sync(Config) ->
                   {disk_log,sync}]),
 
     logger:notice("second", ?domain),
-    timer:sleep(?IDLE_DETECT_TIME_MSEC*2),
+    timer:sleep(?IDLE_DETECT_TIME*2),
     logger:notice("third", ?domain),
     %% wait for automatic disk_log_sync
-    check_tracer(?IDLE_DETECT_TIME_MSEC*2),
+    check_tracer(?IDLE_DETECT_TIME*2),
 
     try_read_file(Log, {ok,<<"first\nsecond\nthird\n">>}, 1000),
     
@@ -678,14 +659,15 @@ sync(Config) ->
     WaitT = 4500,
     OneSync = {logger_h_common,handle_cast,repeated_filesync},
     %% receive 1 repeated_filesync per sec
-    start_tracer([{logger_h_common,handle_cast,2}],
+    start_tracer([{{logger_h_common,handle_cast,2},
+                   [{[repeated_filesync,'_'],[],[{message,{caller}}]}]}],
                  [OneSync || _ <- lists:seq(1, trunc(WaitT/SyncInt))]),
 
     HConfig2 = HConfig#{filesync_repeat_interval => SyncInt},
     ok = logger:update_handler_config(?MODULE, config, HConfig2),
                       
     SyncInt = maps:get(filesync_repeat_interval,
-                       logger_disk_log_h:info(?MODULE)),
+                       maps:get(cb_state,logger_olp:info(h_proc_name()))),
     timer:sleep(WaitT),
     HConfig3 = HConfig#{filesync_repeat_interval => no_repeat},
     ok = logger:update_handler_config(?MODULE, config, HConfig3),
@@ -803,7 +785,7 @@ disk_log_full(cleanup, _Config) ->
     dbg:stop_clear(),
     logger:remove_handler(?MODULE).    
 
-disk_log_events(Config) ->
+disk_log_events(_Config) ->
     Node = node(),
     Log = ?MODULE,
     ok = logger:add_handler(?MODULE,
@@ -860,10 +842,12 @@ write_failure(Config) ->
     rpc:call(Node, ets, insert, [?TEST_HOOKS_TAB,{tester,self()}]),
     rpc:call(Node, ?MODULE, set_internal_log, [?MODULE,internal_log]),
     rpc:call(Node, ?MODULE, set_result, [disk_log_write,ok]),
-    HState = rpc:call(Node, logger_disk_log_h, info, [?STANDARD_HANDLER]),
-    ct:pal("LogOpts = ~p", [LogOpts = maps:get(log_opts,
-                                               maps:get(handler_state,HState))]),
-
+    HState = rpc:call(Node, logger_olp, info, [h_proc_name(?STANDARD_HANDLER)]),
+    LogOpts = maps:get(log_opts,
+                       maps:get(handler_state,
+                                maps:get(cb_state,HState))),
+    ct:pal("LogOpts = ~p", [LogOpts]),
+           
     %% ?check and ?check_no_log in this test only check for internal log events
     ok = log_on_remote_node(Node, "Logged1"),
     rpc:call(Node, logger_disk_log_h, filesync, [?STANDARD_HANDLER]),
@@ -914,15 +898,16 @@ sync_failure(Config) ->
     rpc:call(Node, ets, insert, [?TEST_HOOKS_TAB,{tester,self()}]),
     rpc:call(Node, ?MODULE, set_internal_log, [?MODULE,internal_log]),
     rpc:call(Node, ?MODULE, set_result, [disk_log_sync,ok]),
-    HState = rpc:call(Node, logger_disk_log_h, info, [?STANDARD_HANDLER]),
-    LogOpts = maps:get(log_opts, maps:get(handler_state,HState)),
+    HState = rpc:call(Node, logger_olp, info, [h_proc_name(?STANDARD_HANDLER)]),
+    LogOpts = maps:get(log_opts, maps:get(handler_state,
+                                          maps:get(cb_state,HState))),
     
     SyncInt = 500,
     ok = rpc:call(Node, logger, update_handler_config,
                   [?STANDARD_HANDLER, config,
                    #{filesync_repeat_interval => SyncInt}]),
-    Info = rpc:call(Node, logger_disk_log_h, info, [?STANDARD_HANDLER]),
-    SyncInt = maps:get(filesync_repeat_interval, Info),
+    Info = rpc:call(Node, logger_olp, info, [h_proc_name(?STANDARD_HANDLER)]),
+    SyncInt = maps:get(filesync_repeat_interval, maps:get(cb_state, Info)),
     
     ok = log_on_remote_node(Node, "Logged1"),
     ?check_no_log,
@@ -1198,7 +1183,7 @@ qlen_kill_new(Config) ->
     receive
         {'DOWN', MRef, _, _, Info} ->
            case Info of
-                {shutdown,{overloaded,?MODULE,QLen,Mem}} ->
+                {shutdown,{overloaded,QLen,Mem}} ->
                     ct:pal("Terminated with qlen = ~w, mem = ~w", [QLen,Mem]);
                 killed ->
                     ct:pal("Slow shutdown, handler process was killed!", [])
@@ -1208,7 +1193,7 @@ qlen_kill_new(Config) ->
             ok
     after
         5000 ->
-            Info = logger_disk_log_h:info(?MODULE),
+            Info = logger_olp:info(h_proc_name()),
             ct:pal("Handler state = ~p", [Info]),
             ct:fail("Handler not dead! It should not have survived this!")
     end.
@@ -1235,7 +1220,7 @@ mem_kill_new(Config) ->
     receive
         {'DOWN', MRef, _, _, Info} ->
             case Info of
-                {shutdown,{overloaded,?MODULE,QLen,Mem}} ->
+                {shutdown,{overloaded,QLen,Mem}} ->
                     ct:pal("Terminated with qlen = ~w, mem = ~w", [QLen,Mem]);
                 killed ->
                     ct:pal("Slow shutdown, handler process was killed!", [])
@@ -1245,7 +1230,7 @@ mem_kill_new(Config) ->
             ok
     after
         5000 ->
-            Info = logger_disk_log_h:info(?MODULE),
+            Info = logger_olp:info(h_proc_name()),
             ct:pal("Handler state = ~p", [Info]),
             ct:fail("Handler not dead! It should not have survived this!")
     end.
@@ -1258,12 +1243,12 @@ restart_after(Config) ->
     {Log,HConfig,DLHConfig} = start_handler(?MODULE, ?FUNCTION_NAME, Config),
     NewHConfig1 =
         HConfig#{config=>DLHConfig#{overload_kill_enable=>true,
-                                    overload_kill_qlen=>10,
+                                    overload_kill_qlen=>4,
                                     overload_kill_restart_after=>infinity}},
     ok = logger:update_handler_config(?MODULE, NewHConfig1),
     MRef1 = erlang:monitor(process, whereis(h_proc_name())),
     %% kill handler
-    send_burst({n,100}, {spawn,4,0}, {chars,79}, notice),
+    send_burst({n,100}, {spawn,5,0}, {chars,79}, notice),
     receive
         {'DOWN', MRef1, _, _, _Reason1} ->
             file_delete(Log),
@@ -1271,7 +1256,7 @@ restart_after(Config) ->
             ok
     after
         5000 ->
-            Info1 = logger_std_h:info(?MODULE),
+            Info1 = logger_olp:info(h_proc_name()),
             ct:pal("Handler state = ~p", [Info1]),
             ct:fail("Handler not dead! It should not have survived this!")
     end,
@@ -1280,13 +1265,13 @@ restart_after(Config) ->
     RestartAfter = ?OVERLOAD_KILL_RESTART_AFTER,
     NewHConfig2 =
         HConfig#{config=>DLHConfig#{overload_kill_enable=>true,
-                                    overload_kill_qlen=>10,
+                                    overload_kill_qlen=>4,
                                     overload_kill_restart_after=>RestartAfter}},
     ok = logger:update_handler_config(?MODULE, NewHConfig2),
     Pid0 = whereis(h_proc_name()),
     MRef2 = erlang:monitor(process, Pid0),
     %% kill handler
-    send_burst({n,100}, {spawn,4,0}, {chars,79}, notice),
+    send_burst({n,100}, {spawn,5,0}, {chars,79}, notice),
     receive
         {'DOWN', MRef2, _, _, _Reason2} ->
             file_delete(Log),
@@ -1295,7 +1280,7 @@ restart_after(Config) ->
             ok
     after
         5000 ->
-            Info2 = logger_std_h:info(?MODULE),
+            Info2 = logger_olp:info(h_proc_name()),
             ct:pal("Handler state = ~p", [Info2]),
             ct:fail("Handler not dead! It should not have survived this!")
     end,
@@ -1316,11 +1301,15 @@ handler_requests_under_load(Config) ->
                                       flush_qlen => 2000,
                                       burst_limit_enable => false}},
     ok = logger:update_handler_config(?MODULE, NewHConfig),
-    Pid = spawn_link(fun() -> send_requests(?MODULE, 1, [{filesync,[]},
-                                                         {info,[]},
-                                                         {reset,[]},
-                                                         {change_config,[]}])
-                     end),
+    Pid = spawn_link(
+            fun() -> send_requests(1,[{logger_disk_log_h,filesync,[?MODULE],[]},
+                                      {logger_olp,info,[h_proc_name()],[]},
+                                      {logger_olp,reset,[h_proc_name()],[]},
+                                      {logger,update_handler_config,
+                                       [?MODULE, config,
+                                        #{overload_kill_enable => false}],
+                                       []}])
+            end),
     Procs = 100,
     Sent = Procs * send_burst({n,5000}, {spawn,Procs,10}, {chars,79}, notice),
     Pid ! {self(),finish},
@@ -1332,29 +1321,22 @@ handler_requests_under_load(Config) ->
                         [E || E <- Res,
                               is_tuple(E) andalso (element(1,E) == error)]
                 end,
-    Errors = [{Req,FindError(Res)} || {Req,Res} <- ReqResult],
-    NoOfReqs = lists:foldl(fun({_,Res}, N) -> N + length(Res) end, 0, ReqResult),
+    Errors = [{Func,FindError(Res)} || {_,Func,_,Res} <- ReqResult],
+    NoOfReqs = lists:foldl(fun({_,_,_,Res}, N) -> N + length(Res) end,
+                           0, ReqResult),
     ct:pal("~w requests made. Errors: ~n~p", [NoOfReqs,Errors]),
     ok = file_delete(Log).
 handler_requests_under_load(cleanup, _Config) ->
     ok = stop_handler(?MODULE).
 
-send_requests(HName, TO, Reqs = [{Req,Res}|Rs]) ->
+send_requests(TO, Reqs = [{Mod,Func,Args,Res}|Rs]) ->
     receive
         {From,finish} ->
             From ! {self(),Reqs}
     after
         TO ->
-            Result =
-                case Req of
-                    change_config ->
-                        logger:update_handler_config(HName, logger_disk_log_h,
-                                                     #{overload_kill_enable =>
-                                                           false});
-                    Func ->
-                        logger_disk_log_h:Func(HName)
-                end,
-            send_requests(HName, TO, Rs ++ [{Req,[Result|Res]}])
+            Result = apply(Mod,Func,Args),
+            send_requests(TO, Rs ++ [{Mod,Func,Args,[Result|Res]}])
     end.
 
 %%%-----------------------------------------------------------------
@@ -1472,15 +1454,6 @@ format(Msg,Tag) ->
     erlang:display(Error),
     exit(Error).
 
-remove(Handler, LogName) ->
-    logger_disk_log_h:remove(Handler, LogName),
-    HState = #{log_names := Logs} = logger_disk_log_h:info(),
-    false = maps:is_key(LogName, HState),
-    false = lists:member(LogName, Logs),
-    false = logger_config:exist(?LOGGER_TABLE, LogName),
-    {error,no_such_log} = disk_log:info(LogName),
-    ok.
-
 start_and_add(Name, Config, LogOpts) ->
     HConfig = maps:get(config, Config, #{}),
     HConfig1 = maps:merge(HConfig, LogOpts),
@@ -1607,7 +1580,9 @@ start_tracer(Trace,Expected) ->
     ok.
 
 tpl([{M,F,A}|Trace]) ->
-    {ok,Match} = dbg:tpl(M,F,A,c),
+    tpl([{{M,F,A},c}|Trace]);
+tpl([{{M,F,A},MS}|Trace]) ->
+    {ok,Match} = dbg:tpl(M,F,A,MS),
     case lists:keyfind(matched,1,Match) of
         {_,_,1} ->
             ok;
diff --git a/lib/kernel/test/logger_env_var_SUITE.erl b/lib/kernel/test/logger_env_var_SUITE.erl
index e8d1a313dc..9d2ad11be8 100644
--- a/lib/kernel/test/logger_env_var_SUITE.erl
+++ b/lib/kernel/test/logger_env_var_SUITE.erl
@@ -59,7 +59,8 @@ groups() ->
                  logger_undefined,
                  logger_many_handlers_default_first,
                  logger_many_handlers_default_last,
-                 logger_many_handlers_default_last_broken_filter
+                 logger_many_handlers_default_last_broken_filter,
+                 logger_proxy
                 ]},
      {bad,[],[bad_error_logger,
               bad_level,
@@ -541,6 +542,19 @@ logger_many_handlers(Config, Env, LogErr, LogInfo, NumProgress) ->
 
     ok.
 
+logger_proxy(Config) ->
+    %% assume current node runs with default settings
+    DefOpts = logger_olp:get_opts(logger_proxy),
+    {ok,_,Node} = setup(Config,
+                        [{logger,[{proxy,#{sync_mode_qlen=>0,
+                                           drop_mode_qlen=>2}}]}]),
+    Expected = DefOpts#{sync_mode_qlen:=0,
+                        drop_mode_qlen:=2},
+    Expected = rpc:call(Node,logger_olp,get_opts,[logger_proxy]),
+    Expected = rpc:call(Node,logger,get_proxy_config,[]),
+
+    ok.
+
 sasl_compatible_false(Config) ->
     Log = file(Config,?FUNCTION_NAME),
     {ok,_,Node} = setup(Config,
diff --git a/lib/kernel/test/logger_formatter_SUITE.erl b/lib/kernel/test/logger_formatter_SUITE.erl
index 8c13f0f908..83e3e6c40a 100644
--- a/lib/kernel/test/logger_formatter_SUITE.erl
+++ b/lib/kernel/test/logger_formatter_SUITE.erl
@@ -867,7 +867,7 @@ my_try(Fun) ->
     try Fun() catch C:R:S -> {C,R,hd(S)} end.
 
 timestamp() ->
-    erlang:system_time(microsecond).
+    logger:timestamp().
 
 %% necessary?
 add_time(#{time:=_}=Meta) ->
diff --git a/lib/kernel/test/logger_olp_SUITE.erl b/lib/kernel/test/logger_olp_SUITE.erl
new file mode 100644
index 0000000000..ea3eec89f5
--- /dev/null
+++ b/lib/kernel/test/logger_olp_SUITE.erl
@@ -0,0 +1,90 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2018. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+-module(logger_olp_SUITE).
+
+-compile(export_all).
+
+-include_lib("kernel/src/logger_olp.hrl").
+
+suite() ->
+    [{timetrap,{seconds,30}}].
+
+init_per_suite(Config) ->
+    Config.
+
+end_per_suite(_Config) ->
+    ok.
+
+init_per_group(_Group, Config) ->
+    Config.
+
+end_per_group(_Group, _Config) ->
+    ok.
+
+init_per_testcase(_TestCase, Config) ->
+    Config.
+
+end_per_testcase(Case, Config) ->
+    try apply(?MODULE,Case,[cleanup,Config])
+    catch error:undef -> ok
+    end,
+    ok.
+
+groups() ->
+    [].
+
+all() -> 
+    [idle_timer].
+
+%%%-----------------------------------------------------------------
+%%% Test cases
+idle_timer(_Config) ->
+    {ok,_Pid,Olp} = logger_olp:start_link(?MODULE,?MODULE,self(),#{}),
+    [logger_olp:load(Olp,{msg,N}) || N<-lists:seq(1,3)],
+    timer:sleep(?IDLE_DETECT_TIME*2),
+    [{load,{msg,1}},
+     {load,{msg,2}},
+     {load,{msg,3}},
+     {notify,idle}] = test_server:messages_get(),
+    logger_olp:cast(Olp,hello),
+    timer:sleep(?IDLE_DETECT_TIME*2),
+    [{cast,hello}] = test_server:messages_get(),
+    ok.
+idle_timer(cleanup,_Config) ->
+    unlink(whereis(?MODULE)),
+    logger_olp:stop(?MODULE),
+    ok.
+
+%%%-----------------------------------------------------------------
+%%% Olp callbacks
+init(P) ->
+    {ok,P}.
+
+handle_load(M,P) ->
+    P ! {load,M},
+    P.
+
+handle_cast(M,P) ->
+    P ! {cast,M},
+    {noreply,P}.
+
+notify(N,P) ->
+    P ! {notify,N},
+    P.
diff --git a/lib/kernel/test/logger_proxy_SUITE.erl b/lib/kernel/test/logger_proxy_SUITE.erl
new file mode 100644
index 0000000000..777531e4ed
--- /dev/null
+++ b/lib/kernel/test/logger_proxy_SUITE.erl
@@ -0,0 +1,274 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2018. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+-module(logger_proxy_SUITE).
+
+-compile(export_all).
+
+%% -include_lib("common_test/include/ct.hrl").
+%% -include_lib("kernel/include/logger.hrl").
+%% -include_lib("kernel/src/logger_internal.hrl").
+
+%% -define(str,"Log from "++atom_to_list(?FUNCTION_NAME)++
+%%             ":"++integer_to_list(?LINE)).
+%% -define(map_rep,#{function=>?FUNCTION_NAME, line=>?LINE}).
+%% -define(keyval_rep,[{function,?FUNCTION_NAME}, {line,?LINE}]).
+
+%% -define(MY_LOC(N),#{mfa=>{?MODULE,?FUNCTION_NAME,?FUNCTION_ARITY},
+%%                     file=>?FILE, line=>?LINE-N}).
+
+%% -define(TRY(X), my_try(fun() -> X end)).
+
+
+-define(HNAME,list_to_atom(lists:concat([?MODULE,"_",?FUNCTION_NAME]))).
+-define(LOC,#{mfa=>{?MODULE,?FUNCTION_NAME,?FUNCTION_ARITY},line=>?LINE}).
+-define(ENSURE_TIME,5000).
+
+suite() ->
+    [{timetrap,{seconds,30}},
+     {ct_hooks,[logger_test_lib]}].
+
+init_per_suite(Config) ->
+    Config.
+
+end_per_suite(_Config) ->
+    ok.
+
+init_per_group(_Group, Config) ->
+    Config.
+
+end_per_group(_Group, _Config) ->
+    ok.
+
+init_per_testcase(_TestCase, Config) ->
+    Config.
+
+end_per_testcase(Case, Config) ->
+    try apply(?MODULE,Case,[cleanup,Config])
+    catch error:undef -> ok
+    end,
+    ok.
+
+groups() ->
+    [].
+
+all() -> 
+    [basic,
+     emulator,
+     remote,
+     remote_emulator,
+     config,
+     restart_after,
+     terminate].
+
+%%%-----------------------------------------------------------------
+%%% Test cases
+basic(_Config) ->
+    ok = logger:add_handler(?HNAME,?MODULE,#{config=>self()}),
+    logger_proxy ! {log,notice,"Log from: ~p; ~p",[?FUNCTION_NAME,?LINE],L1=?LOC},
+    ok = ensure(L1),
+    logger_proxy ! {log,notice,[{test_case,?FUNCTION_NAME},{line,?LINE}],L2=?LOC},
+    ok = ensure(L2),
+    logger_proxy:log({remote,node(),{log,notice,
+                                     "Log from: ~p; ~p",
+                                     [?FUNCTION_NAME,?LINE],
+                                     L3=?LOC}}),
+    ok = ensure(L3),
+    logger_proxy:log({remote,node(),{log,notice,
+                                     [{test_case,?FUNCTION_NAME},
+                                      {line,?LINE}],
+                                     L4=?LOC}}),
+    ok = ensure(L4),
+    ok.
+basic(cleanup,_Config) ->
+    ok = logger:remove_handler(?HNAME).
+
+emulator(_Config) ->
+    ok = logger:add_handler(?HNAME,?MODULE,#{config=>self()}),
+    Pid = spawn(fun() -> erlang:error(some_reason) end),
+    ok = ensure(#{pid=>Pid}),
+    ok.
+emulator(cleanup,_Config) ->
+    ok = logger:remove_handler(?HNAME).
+
+remote(Config) ->
+    {ok,_,Node} = logger_test_lib:setup(Config,[{logger,[{proxy,#{}}]}]),
+    ok = logger:add_handler(?HNAME,?MODULE,#{config=>self()}),
+    L1 = ?LOC, spawn(Node,fun() -> logger:notice("Log from ~p; ~p",[?FUNCTION_NAME,?LINE],L1) end),
+    ok = ensure(L1),
+    L2 = ?LOC, spawn(Node,fun() -> logger:notice([{test_case,?FUNCTION_NAME},{line,?LINE}],L2) end),
+    ok = ensure(L2),
+    ok.
+remote(cleanup,_Config) ->
+    ok = logger:remove_handler(?HNAME).
+
+remote_emulator(Config) ->
+    {ok,_,Node} = logger_test_lib:setup(Config,[{logger,[{proxy,#{}}]}]),
+    ok = logger:add_handler(?HNAME,?MODULE,#{config=>self()}),
+    Pid = spawn(Node,fun() -> erlang:error(some_reason) end),
+    ok = ensure(#{pid=>Pid}),
+    ok.
+remote_emulator(cleanup,_Config) ->
+    ok = logger:remove_handler(?HNAME).
+
+config(_Config) ->
+    C1 = #{sync_mode_qlen:=SQ,
+           drop_mode_qlen:=DQ} = logger:get_proxy_config(),
+    C1 = logger_olp:get_opts(logger_proxy),
+
+    %% Update the existing config with these two values
+    SQ1 = SQ+1,
+    DQ1 = DQ+1,
+    ok = logger:update_proxy_config(#{sync_mode_qlen=>SQ1,
+                                      drop_mode_qlen=>DQ1}),
+    C2 = logger:get_proxy_config(), % reads from ets table
+    C2 = logger_olp:get_opts(logger_proxy), % ensure consistency with process opts
+    C2 = C1#{sync_mode_qlen:=SQ1,
+             drop_mode_qlen:=DQ1},
+
+    %% Update the existing again with only one value
+    SQ2 = SQ+2,
+    ok = logger:update_proxy_config(#{sync_mode_qlen=>SQ2}),
+    C3 = logger:get_proxy_config(),
+    C3 = logger_olp:get_opts(logger_proxy),
+    C3 = C2#{sync_mode_qlen:=SQ2},
+
+    %% Set the config, i.e. merge with defaults
+    ok = logger:set_proxy_config(#{sync_mode_qlen=>SQ1}),
+    C4 = logger:get_proxy_config(),
+    C4 = logger_olp:get_opts(logger_proxy),
+    C4 = C1#{sync_mode_qlen:=SQ1},
+
+    %% Reset to default
+    ok = logger:set_proxy_config(#{}),
+    C5 = logger:get_proxy_config(),
+    C5 = logger_olp:get_opts(logger_proxy),
+    C5 = logger_proxy:get_default_config(),
+
+    %% Errors
+    {error,{invalid_olp_config,_}} =
+        logger:set_proxy_config(#{faulty_key=>1}),
+    {error,{invalid_olp_config,_}} =
+        logger:set_proxy_config(#{sync_mode_qlen=>infinity}),
+    {error,{invalid_config,[]}} = logger:set_proxy_config([]),
+
+    {error,{invalid_olp_config,_}} =
+        logger:update_proxy_config(#{faulty_key=>1}),
+    {error,{invalid_olp_config,_}} =
+        logger:update_proxy_config(#{sync_mode_qlen=>infinity}),
+    {error,{invalid_config,[]}} = logger:update_proxy_config([]),
+
+    C5 = logger:get_proxy_config(),
+    C5 = logger_olp:get_opts(logger_proxy),
+
+    ok.
+config(cleanup,_Config) ->
+    _ = logger:set_logger_proxy(logger_proxy:get_default_config()),
+    ok.
+
+restart_after(_Config) ->
+    Restart = 3000,
+    ok = logger:update_proxy_config(#{overload_kill_enable => true,
+                                      overload_kill_qlen => 10,
+                                      overload_kill_restart_after => Restart}),
+    Proxy = whereis(logger_proxy),
+    Proxy = erlang:system_info(system_logger),
+    ProxyConfig = logger:get_proxy_config(),
+    ProxyConfig = logger_olp:get_opts(logger_proxy),
+
+    Ref = erlang:monitor(process,Proxy),
+    spawn(fun() ->
+                  [logger_proxy ! {log,debug,
+                                   [{test_case,?FUNCTION_NAME},
+                                    {line,?LINE}],
+                                   ?LOC} || _ <- lists:seq(1,100)]
+          end),
+    receive
+        {'DOWN',Ref,_,_,_Reason} ->
+            undefined = erlang:system_info(system_logger),
+            timer:sleep(Restart),
+            poll_restarted(10)
+    after 5000 ->
+            ct:fail(proxy_not_terminated)
+    end,
+
+    Proxy1 = whereis(logger_proxy),
+    Proxy1 = erlang:system_info(system_logger),
+    ProxyConfig = logger:get_proxy_config(),
+    ProxyConfig = logger_olp:get_opts(logger_proxy),
+
+    ok.
+restart_after(cleanup,_Config) ->
+    _ = logger:set_logger_proxy(logger_proxy:get_default_config()),
+    ok.
+
+%% Test that system_logger flag is set to logger process if
+%% logger_proxy terminates for other reason than overloaded.
+terminate(_Config) ->
+    Logger = whereis(logger),
+    Proxy = whereis(logger_proxy),
+    Proxy = erlang:system_info(system_logger),
+    ProxyConfig = logger:get_proxy_config(),
+    ProxyConfig = logger_olp:get_opts(logger_proxy),
+
+    Ref = erlang:monitor(process,Proxy),
+    ok = logger_olp:stop(Proxy),
+    receive
+        {'DOWN',Ref,_,_,_Reason} ->
+            Logger = erlang:system_info(system_logger),
+            logger_proxy:restart(),
+            poll_restarted(10)
+    after 5000 ->
+            ct:fail(proxy_not_terminated)
+    end,
+
+    Proxy1 = whereis(logger_proxy),
+    Proxy1 = erlang:system_info(system_logger),
+    ProxyConfig = logger:get_proxy_config(),
+    ProxyConfig = logger_olp:get_opts(logger_proxy),
+
+    ok.
+
+%%%-----------------------------------------------------------------
+%%% Internal functions
+
+poll_restarted(0) ->
+    ct:fail(proxy_not_restarted);
+poll_restarted(N) ->
+    timer:sleep(1000),
+    case whereis(logger_proxy) of
+        undefined ->
+            poll_restarted(N-1);
+        _Pid ->
+            ok
+    end.
+
+%% Logger handler callback
+log(#{meta:=Meta},#{config:=Pid}) ->
+    Pid ! {logged,Meta}.
+
+%% Check that the log from the logger callback function log/2 is received
+ensure(Match) ->
+    receive {logged,Meta} ->
+            case maps:with(maps:keys(Match),Meta) of
+                Match -> ok;
+                _NoMatch -> {error,Match,Meta,test_server:messages_get()}
+            end
+    after ?ENSURE_TIME -> {error,Match,test_server:messages_get()}
+    end.
diff --git a/lib/kernel/test/logger_std_h_SUITE.erl b/lib/kernel/test/logger_std_h_SUITE.erl
index eb17a6d857..0c5516f82b 100644
--- a/lib/kernel/test/logger_std_h_SUITE.erl
+++ b/lib/kernel/test/logger_std_h_SUITE.erl
@@ -25,10 +25,15 @@
 -include_lib("kernel/include/logger.hrl").
 -include_lib("kernel/src/logger_internal.hrl").
 -include_lib("kernel/src/logger_h_common.hrl").
+-include_lib("kernel/src/logger_olp.hrl").
 -include_lib("stdlib/include/ms_transform.hrl").
 -include_lib("kernel/include/file.hrl").
 
--define(check_no_log, [] = test_server:messages_get()).
+-define(check_no_log,
+        begin
+            timer:sleep(?IDLE_DETECT_TIME*2),
+            [] = test_server:messages_get()
+        end).
 -define(check(Expected),
         receive
             {log,Expected} ->
@@ -107,6 +112,8 @@ all() ->
      add_remove_instance_standard_error,
      add_remove_instance_file1,
      add_remove_instance_file2,
+     add_remove_instance_file3,
+     add_remove_instance_file4,
      default_formatter,
      filter_config,
      errors,
@@ -115,7 +122,6 @@ all() ->
      crash_std_h_to_file,
      crash_std_h_to_disk_log,
      bad_input,
-     info_and_reset,
      reconfig,
      file_opts,
      sync,
@@ -137,7 +143,13 @@ all() ->
      mem_kill_std,
      restart_after,
      handler_requests_under_load,
-     recreate_deleted_log
+     recreate_deleted_log,
+     reopen_changed_log,
+     rotate_size,
+     rotate_size_compressed,
+     rotate_size_reopen,
+     rotation_opts,
+     rotation_opts_restart_handler
     ].
 
 add_remove_instance_tty(_Config) ->
@@ -174,10 +186,27 @@ add_remove_instance_file2(Config) ->
 add_remove_instance_file2(cleanup,_Config) ->
     logger_std_h_remove().
 
-add_remove_instance_file(Log, Type) ->
+add_remove_instance_file3(_Config) ->
+    Log = atom_to_list(?MODULE),
+    StdHConfig = #{type=>file},
+    add_remove_instance_file(Log, StdHConfig).
+add_remove_instance_file3(cleanup,_Config) ->
+    logger_std_h_remove().
+
+add_remove_instance_file4(Config) ->
+    Dir = ?config(priv_dir,Config),
+    Log = filename:join(Dir,"stdlog4.txt"),
+    StdHConfig = #{file=>Log,modes=>[]},
+    add_remove_instance_file(Log, StdHConfig).
+add_remove_instance_file4(cleanup,_Config) ->
+    logger_std_h_remove().
+
+add_remove_instance_file(Log, Type) when not is_map(Type) ->
+    add_remove_instance_file(Log,#{type=>Type});
+add_remove_instance_file(Log, StdHConfig) when is_map(StdHConfig) ->
     ok = logger:add_handler(?MODULE,
                             logger_std_h,
-                            #{config => #{type => Type},
+                            #{config => StdHConfig,
                               filter_default=>stop,
                               filters=>?DEFAULT_HANDLER_FILTERS([?MODULE]),
                               formatter=>{?MODULE,self()}}),
@@ -209,9 +238,9 @@ default_formatter(_Config) ->
 filter_config(_Config) ->
     ok = logger:add_handler(?MODULE,logger_std_h,#{}),
     {ok,#{config:=HConfig}=Config} = logger:get_handler_config(?MODULE),
-    HConfig = maps:without([handler_pid,mode_tab],HConfig),
+    HConfig = maps:without([olp],HConfig),
 
-    FakeFullHConfig = HConfig#{handler_pid=>self(),mode_tab=>erlang:make_ref()},
+    FakeFullHConfig = HConfig#{olp=>{regname,self(),erlang:make_ref()}},
     #{config:=HConfig} =
         logger_std_h:filter_config(Config#{config=>FakeFullHConfig}),
     ok.
@@ -246,15 +275,16 @@ errors(Config) ->
         _ ->
             NoDir = lists:concat(["/",?MODULE,"_dir"]),
             {error,
-             {handler_not_added,{{open_failed,NoDir,eacces},_}}} =
+             {handler_not_added,{open_failed,NoDir,eacces}}} =
                 logger:add_handler(myh2,logger_std_h,
                                    #{config=>#{type=>{file,NoDir}}})
     end,
 
     {error,
-     {handler_not_added,{{open_failed,Log,_},_}}} =
+     {handler_not_added,
+      {invalid_config,logger_std_h,#{modes:=bad_file_opt}}}} =
         logger:add_handler(myh3,logger_std_h,
-                           #{config=>#{type=>{file,Log,[bad_file_opt]}}}),
+                           #{config=>#{type=>{file,Log,bad_file_opt}}}),
 
     ok = logger:notice(?msg).
 
@@ -320,19 +350,16 @@ config_fail(_Config) ->
                            #{config => #{restart_type => bad},
                              filter_default=>log,
                              formatter=>{?MODULE,self()}}),
-    {error,{handler_not_added,{invalid_config,logger_std_h,
-                               {invalid_levels,#{drop_mode_qlen:=1}}}}} =
+    {error,{handler_not_added,{invalid_olp_levels,#{drop_mode_qlen:=1}}}} =
         logger:add_handler(?MODULE,logger_std_h,
                            #{config => #{drop_mode_qlen=>1}}),
-    {error,{handler_not_added,{invalid_config,logger_std_h,
-                               {invalid_levels,#{sync_mode_qlen:=43,
-                                                 drop_mode_qlen:=42}}}}} =
+    {error,{handler_not_added,{invalid_olp_levels,#{sync_mode_qlen:=43,
+                                                    drop_mode_qlen:=42}}}} =
         logger:add_handler(?MODULE,logger_std_h,
                            #{config => #{sync_mode_qlen=>43,
                                          drop_mode_qlen=>42}}),
-    {error,{handler_not_added,{invalid_config,logger_std_h,
-                               {invalid_levels,#{drop_mode_qlen:=43,
-                                                 flush_qlen:=42}}}}} =
+    {error,{handler_not_added,{invalid_olp_levels,#{drop_mode_qlen:=43,
+                                                    flush_qlen:=42}}}} =
         logger:add_handler(?MODULE,logger_std_h,
                            #{config => #{drop_mode_qlen=>43,
                                          flush_qlen=>42}}),
@@ -344,7 +371,7 @@ config_fail(_Config) ->
         logger:set_handler_config(?MODULE,config,
                                   #{type=>{file,"file"}}),
 
-    {error,{invalid_config,logger_std_h,{invalid_levels,_}}} =
+    {error,{invalid_olp_levels,_}} =
         logger:set_handler_config(?MODULE,config,
                                   #{sync_mode_qlen=>100,
                                     flush_qlen=>99}),
@@ -355,9 +382,7 @@ config_fail(_Config) ->
     %% Read-only fields may (accidentially) be included in the change,
     %% but it won't take effect
     {ok,C} = logger:get_handler_config(?MODULE),
-    ok = logger:set_handler_config(?MODULE,config,
-                                   #{handler_pid=>self(),
-                                     mode_tab=>erlang:make_ref()}),
+    ok = logger:set_handler_config(?MODULE,config,#{olp=>dummyvalue}),
     {ok,C} = logger:get_handler_config(?MODULE),
 
     ok.
@@ -425,10 +450,13 @@ crash_std_h(Config,Func,Var,Type,Log) ->
 %% logger would send the log event to the logger process here instead
 %% of logging it itself.
 log_on_remote_node(Node,Msg) ->
+    Pid = self(),
     _ = spawn_link(Node,
                    fun() -> erlang:group_leader(whereis(user),self()),
-                            logger:notice(Msg)
+                            logger:notice(Msg),
+                            Pid ! done
                    end),
+    receive done -> ok end,
     ok.
 
 
@@ -456,14 +484,7 @@ sync_and_read(Node,file,Log) ->
     end.
 
 bad_input(_Config) ->
-    {error,{badarg,{filesync,["BadType"]}}} = logger_std_h:filesync("BadType"),
-    {error,{badarg,{info,["BadType"]}}} = logger_std_h:info("BadType"),
-    {error,{badarg,{reset,["BadType"]}}} = logger_std_h:reset("BadType").
-
-
-info_and_reset(_Config) ->
-    #{id := ?STANDARD_HANDLER} = logger_std_h:info(?STANDARD_HANDLER),
-    ok = logger_std_h:reset(?STANDARD_HANDLER).
+    {error,{badarg,{filesync,["BadType"]}}} = logger_std_h:filesync("BadType").
 
 reconfig(Config) ->
     Dir = ?config(priv_dir,Config),
@@ -473,9 +494,10 @@ reconfig(Config) ->
                               filter_default=>log,
                               filters=>?DEFAULT_HANDLER_FILTERS([?MODULE]),
                               formatter=>{?MODULE,self()}}),
-    #{id := ?MODULE,
-      handler_state := #{type := standard_io,
-                         file_ctrl_pid := FileCtrlPid},
+    #{%id := ?MODULE,
+      cb_state:=#{handler_state := #{type := standard_io,
+                                     file_ctrl_pid := FileCtrlPid},
+                  filesync_repeat_interval := no_repeat},
       sync_mode_qlen := ?SYNC_MODE_QLEN,
       drop_mode_qlen := ?DROP_MODE_QLEN,
       flush_qlen := ?FLUSH_QLEN,
@@ -485,9 +507,8 @@ reconfig(Config) ->
       overload_kill_enable := ?OVERLOAD_KILL_ENABLE,
       overload_kill_qlen := ?OVERLOAD_KILL_QLEN,
       overload_kill_mem_size := ?OVERLOAD_KILL_MEM_SIZE,
-      overload_kill_restart_after := ?OVERLOAD_KILL_RESTART_AFTER,
-      filesync_repeat_interval := no_repeat} = DefaultInfo =
-        logger_std_h:info(?MODULE),
+      overload_kill_restart_after := ?OVERLOAD_KILL_RESTART_AFTER} =
+        logger_olp:info(h_proc_name()),
 
     {ok,
      #{config:=
@@ -518,9 +539,10 @@ reconfig(Config) ->
                                      overload_kill_mem_size => 10000000,
                                      overload_kill_restart_after => infinity,
                                      filesync_repeat_interval => 5000}),
-    #{id := ?MODULE,
-      handler_state := #{type := standard_io,
-                         file_ctrl_pid := FileCtrlPid},
+    #{%id := ?MODULE,
+      cb_state := #{handler_state := #{type := standard_io,
+                                       file_ctrl_pid := FileCtrlPid},
+                    filesync_repeat_interval := no_repeat},
       sync_mode_qlen := 1,
       drop_mode_qlen := 2,
       flush_qlen := 3,
@@ -530,8 +552,7 @@ reconfig(Config) ->
       overload_kill_enable := true,
       overload_kill_qlen := 100000,
       overload_kill_mem_size := 10000000,
-      overload_kill_restart_after := infinity,
-      filesync_repeat_interval := no_repeat} = Info = logger_std_h:info(?MODULE),
+      overload_kill_restart_after := infinity} = logger_olp:info(h_proc_name()),
 
     {ok,#{config :=
               #{type := standard_io,
@@ -611,22 +632,51 @@ reconfig(cleanup, _Config) ->
 file_opts(Config) ->
     Dir = ?config(priv_dir,Config),
     Log = filename:join(Dir, lists:concat([?FUNCTION_NAME,".log"])),
-    BadFileOpts = [raw],
-    BadType = {file,Log,BadFileOpts},
-    {error,{handler_not_added,{{open_failed,Log,enoent},_}}} =
-        logger:add_handler(?MODULE, logger_std_h,
-                           #{config => #{type => BadType}}),
+    MissingOpts = [raw],
+    Type1 = {file,Log,MissingOpts},
+    ok = logger:add_handler(?MODULE, logger_std_h,
+                            #{config => #{type => Type1}}),
+    {ok,#{config:=#{type:=file,file:=Log,modes:=Modes1}}} =
+        logger:get_handler_config(?MODULE),
+    [append,delayed_write,raw] = lists:sort(Modes1),
+    ok = logger:remove_handler(?MODULE),
 
     OkFileOpts = [raw,append],
     OkType = {file,Log,OkFileOpts},
     ok = logger:add_handler(?MODULE,
                             logger_std_h,
-                            #{config => #{type => OkType},
+                            #{config => #{type => OkType}, % old format
                               filter_default=>log,
                               filters=>?DEFAULT_HANDLER_FILTERS([?MODULE]),
                               formatter=>{?MODULE,self()}}),
 
-    #{handler_state := #{type := OkType}} = logger_std_h:info(?MODULE),
+    ModOpts = [delayed_write|OkFileOpts],
+    #{cb_state := #{handler_state := #{type:=file,
+                                       file:=Log,
+                                       modes:=ModOpts}}} =
+        logger_olp:info(h_proc_name()),
+    {ok,#{config := #{type:=file,
+                      file:=Log,
+                      modes:=ModOpts}}} = logger:get_handler_config(?MODULE),
+    ok = logger:remove_handler(?MODULE),
+
+    ok = logger:add_handler(?MODULE,
+                            logger_std_h,
+                            #{config => #{type => file,
+                                          file => Log,
+                                          modes => OkFileOpts}, % new format
+                              filter_default=>log,
+                              filters=>?DEFAULT_HANDLER_FILTERS([?MODULE]),
+                              formatter=>{?MODULE,self()}}),
+
+    #{cb_state := #{handler_state := #{type:=file,
+                                       file:=Log,
+                                       modes:=ModOpts}}} =
+        logger_olp:info(h_proc_name()),
+    {ok,#{config := #{type:=file,
+                      file:=Log,
+                      modes:=ModOpts}}} =
+        logger:get_handler_config(?MODULE),
     logger:notice(M1=?msg,?domain),
     ?check(M1),
     B1 = ?bin(M1),
@@ -642,13 +692,14 @@ sync(Config) ->
     Type = {file,Log},
     ok = logger:add_handler(?MODULE,
                             logger_std_h,
-                            #{config => #{type => Type},
+                            #{config => #{type => Type,
+                                          file_check => 10000},
                               filter_default=>log,
                               filters=>?DEFAULT_HANDLER_FILTERS([?MODULE]),
                               formatter=>{?MODULE,nl}}),
 
     %% check repeated filesync happens
-    start_tracer([{logger_std_h, write_to_dev, 5},
+    start_tracer([{logger_std_h, write_to_dev, 2},
                   {file, datasync, 1}],
                  [{logger_std_h, write_to_dev, <<"first\n">>},
                   {file,datasync}]),
@@ -658,7 +709,7 @@ sync(Config) ->
     check_tracer(filesync_rep_int()*2),
 
     %% check that explicit filesync is only done once
-    start_tracer([{logger_std_h, write_to_dev, 5},
+    start_tracer([{logger_std_h, write_to_dev, 2},
                   {file, datasync, 1}],
                  [{logger_std_h, write_to_dev, <<"second\n">>},
                   {file,datasync},
@@ -675,12 +726,9 @@ sync(Config) ->
     %% a filesync is still performed when handler goes idle
     ok = logger:update_handler_config(?MODULE, config,
                                       #{filesync_repeat_interval => no_repeat}),
-    no_repeat = maps:get(filesync_repeat_interval, logger_std_h:info(?MODULE)),
-    %% The following timer is to make sure the time from last log
-    %% ("second") to next ("third") is long enough, so the a flush is
-    %% triggered by the idle timeout between "thrid" and "fourth".
-    timer:sleep(?IDLE_DETECT_TIME_MSEC*2),
-    start_tracer([{logger_std_h, write_to_dev, 5},
+    no_repeat = maps:get(filesync_repeat_interval,
+                         maps:get(cb_state, logger_olp:info(h_proc_name()))),
+    start_tracer([{logger_std_h, write_to_dev, 2},
                   {file, datasync, 1}],
                  [{logger_std_h, write_to_dev, <<"third\n">>},
                   {file,datasync},
@@ -688,22 +736,24 @@ sync(Config) ->
                   {file,datasync}]),
     logger:notice("third", ?domain),
     %% wait for automatic filesync
-    timer:sleep(?IDLE_DETECT_TIME_MSEC*2),
+    timer:sleep(?IDLE_DETECT_TIME*2),
     logger:notice("fourth", ?domain),
     %% wait for automatic filesync
-    check_tracer(?IDLE_DETECT_TIME_MSEC*2),
+    check_tracer(?IDLE_DETECT_TIME*2),
 
     %% switch repeated filesync on and verify that the looping works
     SyncInt = 1000,
     WaitT = 4500,
     OneSync = {logger_h_common,handle_cast,repeated_filesync},
     %% receive 1 repeated_filesync per sec
-    start_tracer([{logger_h_common,handle_cast,2}],
+    start_tracer([{{logger_h_common,handle_cast,2},
+                   [{[repeated_filesync,'_'],[],[]}]}],
                  [OneSync || _ <- lists:seq(1, trunc(WaitT/SyncInt))]),
 
     ok = logger:update_handler_config(?MODULE, config,
                                       #{filesync_repeat_interval => SyncInt}),
-    SyncInt = maps:get(filesync_repeat_interval, logger_std_h:info(?MODULE)),
+    SyncInt = maps:get(filesync_repeat_interval,
+                       maps:get(cb_state,logger_olp:info(h_proc_name()))),
     timer:sleep(WaitT),
     ok = logger:update_handler_config(?MODULE, config,
                                       #{filesync_repeat_interval => no_repeat}),
@@ -764,8 +814,6 @@ sync_failure(Config) ->
     ok = rpc:call(Node, logger, update_handler_config,
                   [?STANDARD_HANDLER, config,
                    #{filesync_repeat_interval => SyncInt}]),
-    Info = rpc:call(Node, logger_std_h, info, [?STANDARD_HANDLER]),
-    SyncInt = maps:get(filesync_repeat_interval, Info),
     
     ok = log_on_remote_node(Node, "Logged1"),
     ?check_no_log,
@@ -1095,7 +1143,7 @@ qlen_kill_new(Config) ->
     receive
         {'DOWN', MRef, _, _, Info} ->
            case Info of
-                {shutdown,{overloaded,?MODULE,QLen,Mem}} ->
+                {shutdown,{overloaded,QLen,Mem}} ->
                     ct:pal("Terminated with qlen = ~w, mem = ~w", [QLen,Mem]);
                 killed ->
                     ct:pal("Slow shutdown, handler process was killed!", [])
@@ -1105,7 +1153,7 @@ qlen_kill_new(Config) ->
             ok
     after
         5000 ->
-            Info = logger_std_h:info(?MODULE),
+            Info = logger_olp:info(h_proc_name()),
             ct:pal("Handler state = ~p", [Info]),
             ct:fail("Handler not dead! It should not have survived this!")
     end.
@@ -1146,7 +1194,7 @@ mem_kill_new(Config) ->
     receive
         {'DOWN', MRef, _, _, Info} ->
             case Info of
-                {shutdown,{overloaded,?MODULE,QLen,Mem}} ->
+                {shutdown,{overloaded,QLen,Mem}} ->
                     ct:pal("Terminated with qlen = ~w, mem = ~w", [QLen,Mem]);
                 killed ->
                     ct:pal("Slow shutdown, handler process was killed!", [])
@@ -1156,7 +1204,7 @@ mem_kill_new(Config) ->
             ok
     after
         5000 ->
-            Info = logger_std_h:info(?MODULE),
+            Info = logger_olp:info(h_proc_name()),
             ct:pal("Handler state = ~p", [Info]),
             ct:fail("Handler not dead! It should not have survived this!")
     end.
@@ -1187,7 +1235,7 @@ restart_after(Config) ->
             ok
     after
         5000 ->
-            Info1 = logger_std_h:info(?MODULE),
+            Info1 = logger_olp:info(h_proc_name()),
             ct:pal("Handler state = ~p", [Info1]),
             ct:fail("Handler not dead! It should not have survived this!")
     end,
@@ -1212,7 +1260,7 @@ restart_after(Config) ->
             ok
     after
         5000 ->
-            Info2 = logger_std_h:info(?MODULE),
+            Info2 = logger_olp:info(h_proc_name()),
             ct:pal("Handler state = ~p", [Info2]),
             ct:fail("Handler not dead! It should not have survived this!")
     end,
@@ -1234,11 +1282,15 @@ handler_requests_under_load(Config) ->
                                        flush_qlen => 2000,
                                        burst_limit_enable => false}},
     ok = logger:update_handler_config(?MODULE, NewHConfig),
-    Pid = spawn_link(fun() -> send_requests(?MODULE, 1, [{filesync,[]},
-                                                         {info,[]},
-                                                         {reset,[]},
-                                                         {change_config,[]}])
-                     end),
+    Pid = spawn_link(
+            fun() -> send_requests(1,[{logger_std_h,filesync,[?MODULE],[]},
+                                      {logger_olp,info,[h_proc_name()],[]},
+                                      {logger_olp,reset,[h_proc_name()],[]},
+                                      {logger,update_handler_config,
+                                       [?MODULE, config,
+                                        #{overload_kill_enable => false}],
+                                       []}])
+            end),
     Sent = send_burst({t,10000}, seq, {chars,79}, notice),
     Pid ! {self(),finish},
     ReqResult = receive {Pid,Result} -> Result end,
@@ -1249,8 +1301,9 @@ handler_requests_under_load(Config) ->
                         [E || E <- Res,
                               is_tuple(E) andalso (element(1,E) == error)]
                 end,
-    Errors = [{Req,FindError(Res)} || {Req,Res} <- ReqResult],
-    NoOfReqs = lists:foldl(fun({_,Res}, N) -> N + length(Res) end, 0, ReqResult),
+    Errors = [{Func,FindError(Res)} || {_,Func,_,Res} <- ReqResult],
+    NoOfReqs = lists:foldl(fun({_,_,_,Res}, N) -> N + length(Res) end,
+                           0, ReqResult),
     ct:pal("~w requests made. Errors: ~n~p", [NoOfReqs,Errors]),
     ok = file_delete(Log).
 handler_requests_under_load(cleanup, _Config) ->
@@ -1270,24 +1323,356 @@ recreate_deleted_log(Config) ->
 recreate_deleted_log(cleanup, _Config) ->
     ok = stop_handler(?MODULE).
 
+reopen_changed_log(Config) ->
+    {Log,_HConfig,_StdHConfig} =
+        start_handler(?MODULE, ?FUNCTION_NAME, Config),
+    logger:notice("first",?domain),
+    logger_std_h:filesync(?MODULE),
+    ok = file:rename(Log,Log++".old"),
+    ok = file:write_file(Log,""),
+    logger:notice("second",?domain),
+    logger_std_h:filesync(?MODULE),
+    {ok,<<"first\n">>} = file:read_file(Log++".old"),
+    {ok,<<"second\n">>} = file:read_file(Log),
+    ok.
+reopen_changed_log(cleanup, _Config) ->
+    ok = stop_handler(?MODULE).
+
+rotate_size(Config) ->
+    {Log,_HConfig,_StdHConfig} =
+        start_handler(?MODULE, ?FUNCTION_NAME, Config),
+    ok = logger:update_handler_config(?MODULE,#{config=>#{max_no_bytes=>1000,
+                                                          max_no_files=>2}}),
+
+    Str = lists:duplicate(19,$a),
+    [logger:notice(Str,?domain) || _ <- lists:seq(1,50)],
+    logger_std_h:filesync(?MODULE),
+    {ok,#file_info{size=1000}} = file:read_file_info(Log),
+    {error,enoent} = file:read_file_info(Log++".0"),
+
+    logger:notice(Str,?domain),
+    logger_std_h:filesync(?MODULE),
+    {ok,#file_info{size=0}} = file:read_file_info(Log),
+    {ok,#file_info{size=1020}} = file:read_file_info(Log++".0"),
+    {error,enoent} = file:read_file_info(Log++".1"),
+
+    [logger:notice(Str,?domain) || _ <- lists:seq(1,51)],
+    logger_std_h:filesync(?MODULE),
+    {ok,#file_info{size=0}} = file:read_file_info(Log),
+    {ok,#file_info{size=1020}} = file:read_file_info(Log++".0"),
+    {ok,#file_info{size=1020}} = file:read_file_info(Log++".1"),
+    {error,enoent} = file:read_file_info(Log++".2"),
+
+    [logger:notice(Str,?domain) || _ <- lists:seq(1,50)],
+    logger_std_h:filesync(?MODULE),
+    {ok,#file_info{size=1000}} = file:read_file_info(Log),
+    {ok,#file_info{size=1020}} = file:read_file_info(Log++".0"),
+    {ok,#file_info{size=1020}} = file:read_file_info(Log++".1"),
+    {error,enoent} = file:read_file_info(Log++".2"),
+
+    logger:notice("bbbb",?domain),
+    logger_std_h:filesync(?MODULE),
+    {ok,#file_info{size=0}} = file:read_file_info(Log),
+    {ok,#file_info{size=1005}} = file:read_file_info(Log++".0"),
+    {ok,#file_info{size=1020}} = file:read_file_info(Log++".1"),
+    {error,enoent} = file:read_file_info(Log++".2"),
+
+    ok.
+rotate_size(cleanup,_Config) ->
+    ok = stop_handler(?MODULE).
+
+rotate_size_compressed(Config) ->
+    {Log,_HConfig,_StdHConfig} =
+        start_handler(?MODULE, ?FUNCTION_NAME, Config),
+    ok = logger:update_handler_config(?MODULE,
+                                      #{config=>#{max_no_bytes=>1000,
+                                                  max_no_files=>2,
+                                                  compress_on_rotate=>true}}),
+    Str = lists:duplicate(19,$a),
+    [logger:notice(Str,?domain) || _ <- lists:seq(1,50)],
+    logger_std_h:filesync(?MODULE),
+    {ok,#file_info{size=1000}} = file:read_file_info(Log),
+    {error,enoent} = file:read_file_info(Log++".0"),
+    {error,enoent} = file:read_file_info(Log++".0.gz"),
+
+    logger:notice(Str,?domain),
+    logger_std_h:filesync(?MODULE),
+    {ok,#file_info{size=0}} = file:read_file_info(Log),
+    {error,enoent} = file:read_file_info(Log++".0"),
+    {ok,#file_info{size=35}} = file:read_file_info(Log++".0.gz"),
+    {error,enoent} = file:read_file_info(Log++".1"),
+    {error,enoent} = file:read_file_info(Log++".1.gz"),
+
+    [logger:notice(Str,?domain) || _ <- lists:seq(1,51)],
+    logger_std_h:filesync(?MODULE),
+    {ok,#file_info{size=0}} = file:read_file_info(Log),
+    {error,enoent} = file:read_file_info(Log++".0"),
+    {ok,#file_info{size=35}} = file:read_file_info(Log++".0.gz"),
+    {error,enoent} = file:read_file_info(Log++".1"),
+    {ok,#file_info{size=35}} = file:read_file_info(Log++".1.gz"),
+    {error,enoent} = file:read_file_info(Log++".2"),
+    {error,enoent} = file:read_file_info(Log++".2.gz"),
+
+    [logger:notice(Str,?domain) || _ <- lists:seq(1,50)],
+    logger_std_h:filesync(?MODULE),
+    {ok,#file_info{size=1000}} = file:read_file_info(Log),
+    {error,enoent} = file:read_file_info(Log++".0"),
+    {ok,#file_info{size=35}} = file:read_file_info(Log++".0.gz"),
+    {error,enoent} = file:read_file_info(Log++".1"),
+    {ok,#file_info{size=35}} = file:read_file_info(Log++".1.gz"),
+    {error,enoent} = file:read_file_info(Log++".2"),
+    {error,enoent} = file:read_file_info(Log++".2.gz"),
+
+    logger:notice("bbbb",?domain),
+    logger_std_h:filesync(?MODULE),
+    {ok,#file_info{size=0}} = file:read_file_info(Log),
+    {error,enoent} = file:read_file_info(Log++".0"),
+    {ok,#file_info{size=38}} = file:read_file_info(Log++".0.gz"),
+    {error,enoent} = file:read_file_info(Log++".1"),
+    {ok,#file_info{size=35}} = file:read_file_info(Log++".1.gz"),
+    {error,enoent} = file:read_file_info(Log++".2"),
+    {error,enoent} = file:read_file_info(Log++".2.gz"),
+
+    ok.
+rotate_size_compressed(cleanup,_Config) ->
+    ok = stop_handler(?MODULE).
+
+rotate_size_reopen(Config) ->
+    {Log,_HConfig,_StdHConfig} =
+        start_handler(?MODULE, ?FUNCTION_NAME, Config),
+    ok = logger:update_handler_config(?MODULE,#{config=>#{max_no_bytes=>1000,
+                                                          max_no_files=>2}}),
+
+    Str = lists:duplicate(19,$a),
+    [logger:notice(Str,?domain) || _ <- lists:seq(1,40)],
+    logger_std_h:filesync(?MODULE),
+    {ok,#file_info{size=800}} = file:read_file_info(Log),
+
+    {ok,HConfig} = logger:get_handler_config(?MODULE),
+    ok = logger:remove_handler(?MODULE),
+    ok = logger:add_handler(?MODULE,maps:get(module,HConfig),HConfig),
+    {ok,#file_info{size=800}} = file:read_file_info(Log),
+
+    [logger:notice(Str,?domain) || _ <- lists:seq(1,40)],
+    logger_std_h:filesync(?MODULE),
+    {ok,#file_info{size=580}} = file:read_file_info(Log),
+    {ok,#file_info{size=1020}} = file:read_file_info(Log++".0"),
+    ok.
+rotate_size_reopen(cleanup,_Config) ->
+    ok = stop_handler(?MODULE).
+
+rotation_opts(Config) ->
+    {Log,_HConfig,StdHConfig} =
+        start_handler(?MODULE, ?FUNCTION_NAME, Config),
+    #{max_no_bytes:=infinity,
+      max_no_files:=0,
+      compress_on_rotate:=false} = StdHConfig,
+
+    %% Test bad rotation config
+    {error,{invalid_config,_,_}} =
+        logger:update_handler_config(?MODULE,config,#{max_no_bytes=>0}),
+    {error,{invalid_config,_,_}} =
+        logger:update_handler_config(?MODULE,config,#{max_no_files=>infinity}),
+    {error,{invalid_config,_,_}} =
+        logger:update_handler_config(?MODULE,config,
+                                     #{compress_on_rotate=>undefined}),
+
+
+    %% Test good rotation config - start with no rotation
+    Str = lists:duplicate(19,$a),
+    [logger:notice(Str,?domain) || _ <- lists:seq(1,10)],
+    logger_std_h:filesync(?MODULE),
+    {ok,#file_info{size=200}} = file:read_file_info(Log),
+    [] = filelib:wildcard(Log++".*"),
+
+    %% Turn on rotation, check that existing file is rotated since its
+    %% size exceeds max_no_bytes
+    ok = logger:update_handler_config(?MODULE,
+                                      config,
+                                      #{max_no_bytes=>100,
+                                        max_no_files=>2}),
+    timer:sleep(100), % give some time to execute config_changed
+    {ok,#file_info{size=0}} = file:read_file_info(Log),
+    Log0 = Log++".0",
+    {ok,#file_info{size=200}} = file:read_file_info(Log0),
+    [Log0] = filelib:wildcard(Log++".*"),
+
+    %% Fill all logs
+    [logger:notice(Str,?domain) || _ <- lists:seq(1,13)],
+    logger_std_h:filesync(?MODULE),
+    {ok,#file_info{size=20}} = file:read_file_info(Log),
+    {ok,#file_info{size=120}} = file:read_file_info(Log0),
+    {ok,#file_info{size=120}} = file:read_file_info(Log++".1"),
+    [_,_] = filelib:wildcard(Log++".*"),
+
+    %% Extend size and count and check that nothing changes with existing files
+    ok = logger:update_handler_config(?MODULE,
+                                      config,
+                                      #{max_no_bytes=>200,
+                                        max_no_files=>3}),
+    timer:sleep(100), % give some time to execute config_changed
+    {ok,#file_info{size=20}} = file:read_file_info(Log),
+    {ok,#file_info{size=120}} = file:read_file_info(Log0),
+    {ok,#file_info{size=120}} = file:read_file_info(Log++".1"),
+    [_,_] = filelib:wildcard(Log++".*"),
+
+    %% Add more log events and see that extended size and count works
+    [logger:notice(Str,?domain) || _ <- lists:seq(1,10)],
+    logger_std_h:filesync(?MODULE),
+    {ok,#file_info{size=0}} = file:read_file_info(Log),
+    {ok,#file_info{size=220}} = file:read_file_info(Log0),
+    {ok,#file_info{size=120}} = file:read_file_info(Log++".1"),
+    {ok,#file_info{size=120}} = file:read_file_info(Log++".2"),
+    [_,_,_] = filelib:wildcard(Log++".*"),
+
+    %% Reduce count and check that archive files that exceed the new
+    %% count are moved
+    ok = logger:update_handler_config(?MODULE,
+                                      config,
+                                      #{max_no_files=>1}),
+    timer:sleep(100), % give some time to execute config_changed
+    {ok,#file_info{size=0}} = file:read_file_info(Log),
+    {ok,#file_info{size=220}} = file:read_file_info(Log0),
+    [Log0] = filelib:wildcard(Log++".*"),
+
+    %% Extend size and count again, and turn on compression. Check
+    %% that archives are compressed
+    ok = logger:update_handler_config(?MODULE,
+                                      config,
+                                      #{max_no_bytes=>100,
+                                        max_no_files=>2,
+                                        compress_on_rotate=>true}),
+    timer:sleep(100), % give some time to execute config_changed
+    {ok,#file_info{size=0}} = file:read_file_info(Log),
+    Log0gz = Log0++".gz",
+    {ok,#file_info{size=29}} = file:read_file_info(Log0gz),
+    [Log0gz] = filelib:wildcard(Log++".*"),
+
+    %% Fill all logs
+    [logger:notice(Str,?domain) || _ <- lists:seq(1,13)],
+    logger_std_h:filesync(?MODULE),
+    {ok,#file_info{size=20}} = file:read_file_info(Log),
+    {ok,#file_info{size=29}} = file:read_file_info(Log0gz),
+    {ok,#file_info{size=29}} = file:read_file_info(Log++".1.gz"),
+    [_,_] = filelib:wildcard(Log++".*"),
+
+    %% Reduce count and turn off compression. Check that archives that
+    %% exceeds the new count are removed, and the rest are
+    %% uncompressed.
+    ok = logger:update_handler_config(?MODULE,
+                                      config,
+                                      #{max_no_files=>1,
+                                        compress_on_rotate=>false}),
+    timer:sleep(100), % give some time to execute config_changed
+    {ok,#file_info{size=20}} = file:read_file_info(Log),
+    {ok,#file_info{size=120}} = file:read_file_info(Log0),
+    [Log0] = filelib:wildcard(Log++".*"),
+
+    %% Check that config and handler state agree on the current rotation settings
+    {ok,#{config:=#{max_no_bytes:=100,
+                    max_no_files:=1,
+                    compress_on_rotate:=false}}} =
+         logger:get_handler_config(?MODULE),
+    #{cb_state:=#{handler_state:=#{max_no_bytes:=100,
+                                   max_no_files:=1,
+                                   compress_on_rotate:=false}}} =
+        logger_olp:info(h_proc_name()),
+    ok.
+rotation_opts(cleanup,_Config) ->
+    ok = stop_handler(?MODULE).
+
+rotation_opts_restart_handler(Config) ->
+    {Log,_HConfig,_StdHConfig} =
+        start_handler(?MODULE, ?FUNCTION_NAME, Config),
+    ok = logger:update_handler_config(?MODULE,
+                                      config,
+                                      #{max_no_bytes=>100,
+                                        max_no_files=>2}),
+
+    %% Fill all logs
+    Str = lists:duplicate(19,$a),
+    [logger:notice(Str,?domain) || _ <- lists:seq(1,15)],
+    logger_std_h:filesync(?MODULE),
+    {ok,#file_info{size=60}} = file:read_file_info(Log),
+    {ok,#file_info{size=120}} = file:read_file_info(Log++".0"),
+    {ok,#file_info{size=120}} = file:read_file_info(Log++".1"),
+    [_,_] = filelib:wildcard(Log++".*"),
+
+    %% Stop/start handler and turn off rotation. Check that archives are removed.
+    {ok,#{config:=StdHConfig1}=HConfig1} = logger:get_handler_config(?MODULE),
+    ok = logger:remove_handler(?MODULE),
+    ok = logger:add_handler(
+           ?MODULE,logger_std_h,
+           HConfig1#{config=>StdHConfig1#{max_no_bytes=>infinity}}),
+    timer:sleep(100),
+    {ok,#file_info{size=60}} = file:read_file_info(Log),
+    [] = filelib:wildcard(Log++".*"),
+
+    %% Add some log events and check that file is no longer rotated.
+    [logger:notice(Str,?domain) || _ <- lists:seq(1,10)],
+    logger_std_h:filesync(?MODULE),
+    {ok,#file_info{size=260}} = file:read_file_info(Log),
+    [] = filelib:wildcard(Log++".*"),
+
+    %% Stop/start handler and trun on rotation. Check that file is rotated.
+    {ok,#{config:=StdHConfig2}=HConfig2} = logger:get_handler_config(?MODULE),
+    ok = logger:remove_handler(?MODULE),
+    ok = logger:add_handler(
+           ?MODULE,logger_std_h,
+           HConfig2#{config=>StdHConfig2#{max_no_bytes=>100,
+                                          max_no_files=>2}}),
+    timer:sleep(100),
+    {ok,#file_info{size=0}} = file:read_file_info(Log),
+    {ok,#file_info{size=260}} = file:read_file_info(Log++".0"),
+    [_] = filelib:wildcard(Log++".*"),
+
+    %% Fill all logs
+    [logger:notice(Str,?domain) || _ <- lists:seq(1,10)],
+    logger_std_h:filesync(?MODULE),
+    {ok,#file_info{size=80}} = file:read_file_info(Log),
+    {ok,#file_info{size=120}} = file:read_file_info(Log++".0"),
+    {ok,#file_info{size=260}} = file:read_file_info(Log++".1"),
+
+    %% Stop/start handler, reduce count and turn on compression. Check
+    %% that excess archives are removed, and the rest compressed.
+    {ok,#{config:=StdHConfig3}=HConfig3} = logger:get_handler_config(?MODULE),
+    ok = logger:remove_handler(?MODULE),
+    ok = logger:add_handler(
+           ?MODULE,logger_std_h,
+           HConfig3#{config=>StdHConfig3#{max_no_bytes=>75,
+                                          max_no_files=>1,
+                                          compress_on_rotate=>true}}),
+    timer:sleep(100),
+    {ok,#file_info{size=0}} = file:read_file_info(Log),
+    {ok,#file_info{size=29}} = file:read_file_info(Log++".0.gz"),
+    [_] = filelib:wildcard(Log++".*"),
+
+    %% Stop/start handler and turn off compression. Check that achives
+    %% are decompressed.
+    {ok,#{config:=StdHConfig4}=HConfig4} = logger:get_handler_config(?MODULE),
+    ok = logger:remove_handler(?MODULE),
+    ok = logger:add_handler(
+           ?MODULE,logger_std_h,
+           HConfig4#{config=>StdHConfig4#{compress_on_rotate=>false}}),
+    timer:sleep(100),
+    {ok,#file_info{size=0}} = file:read_file_info(Log),
+    {ok,#file_info{size=80}} = file:read_file_info(Log++".0"),
+    [_] = filelib:wildcard(Log++".*"),
+
+    ok.
+rotation_opts_restart_handler(cleanup,_Config) ->
+    ok = stop_handler(?MODULE).
+
 %%%-----------------------------------------------------------------
 %%%
-send_requests(HName, TO, Reqs = [{Req,Res}|Rs]) ->
+send_requests(TO, Reqs = [{Mod,Func,Args,Res}|Rs]) ->
     receive
         {From,finish} ->
             From ! {self(),Reqs}
     after
         TO ->
-            Result =
-                case Req of
-                    change_config ->
-                        logger:update_handler_config(HName, config,
-                                                     #{overload_kill_enable =>
-                                                           false});
-                    Func ->
-                        logger_std_h:Func(HName)
-                end,
-            send_requests(HName, TO, Rs ++ [{Req,[Result|Res]}])
+            Result = apply(Mod,Func,Args),
+            send_requests(TO, Rs ++ [{Mod,Func,Args,[Result|Res]}])
     end.
             
 
@@ -1298,8 +1683,8 @@ start_handler(Name, TTY, _Config) when TTY == standard_io;
     ok = logger:add_handler(Name,
                             logger_std_h,
                             #{config => #{type => TTY},
-                              filter_default=>log,
-                              filters=>?DEFAULT_HANDLER_FILTERS([Name]),
+                              filter_default=>stop,
+                              filters=>filter_only_this_domain(Name),
                               formatter=>{?MODULE,op}}),
     {ok,HConfig = #{config := StdHConfig}} = logger:get_handler_config(Name),
     {HConfig,StdHConfig};
@@ -1313,12 +1698,17 @@ start_handler(Name, FuncName, Config) ->
     ok = logger:add_handler(Name,
                             logger_std_h,
                             #{config => #{type => Type},
-                              filter_default=>log,
-                              filters=>?DEFAULT_HANDLER_FILTERS([Name]),
+                              filter_default=>stop,
+                              filters=>filter_only_this_domain(Name),
                               formatter=>{?MODULE,op}}),
     {ok,HConfig = #{config := StdHConfig}} = logger:get_handler_config(Name),
     {Log,HConfig,StdHConfig}.
+
+filter_only_this_domain(Name) ->
+    [{remote_gl,{fun logger_filters:remote_gl/2,stop}},
+     {domain,{fun logger_filters:domain/2,{log,super,[Name]}}}].
     
+
 stop_handler(Name) ->
     R = logger:remove_handler(Name),
     ct:pal("Handler ~p stopped! Result: ~p", [Name,R]),
@@ -1624,7 +2014,8 @@ start_tracer(Trace,Expected) ->
     Pid = self(),
     FileCtrlPid = maps:get(file_ctrl_pid,
                            maps:get(handler_state,
-                                    logger_std_h:info(?MODULE))),
+                                    maps:get(cb_state,
+                                             logger_olp:info(h_proc_name())))),
     dbg:tracer(process,{fun tracer/2,{Pid,Expected}}),
     dbg:p(whereis(h_proc_name()),[c]),
     dbg:p(FileCtrlPid,[c]),
@@ -1632,7 +2023,9 @@ start_tracer(Trace,Expected) ->
     ok.
 
 tpl([{M,F,A}|Trace]) ->
-    {ok,Match} = dbg:tpl(M,F,A,[]),
+    tpl([{{M,F,A},[]}|Trace]);
+tpl([{{M,F,A},MS}|Trace]) ->
+    {ok,Match} = dbg:tpl(M,F,A,MS),
     case lists:keyfind(matched,1,Match) of
         {_,_,1} ->
             ok;
@@ -1648,7 +2041,7 @@ tpl([]) ->
 tracer({trace,_,call,{logger_h_common,handle_cast,[Op|_]}},
        {Pid,[{Mod,Func,Op}|Expected]}) ->
     maybe_tracer_done(Pid,Expected,{Mod,Func,Op});
-tracer({trace,_,call,{Mod=logger_std_h,Func=write_to_dev,[_,Data,_,_,_]}},
+tracer({trace,_,call,{Mod=logger_std_h,Func=write_to_dev,[Data,_]}},
        {Pid,[{Mod,Func,Data}|Expected]}) ->
     maybe_tracer_done(Pid,Expected,{Mod,Func,Data});
 tracer({trace,_,call,{Mod,Func,_}}, {Pid,[{Mod,Func}|Expected]}) ->
@@ -1732,4 +2125,3 @@ filesync_rep_int() ->
 
 file_delete(Log) ->
    file:delete(Log).
-
diff --git a/lib/kernel/test/logger_stress_SUITE.erl b/lib/kernel/test/logger_stress_SUITE.erl
new file mode 100644
index 0000000000..1a278fb1b2
--- /dev/null
+++ b/lib/kernel/test/logger_stress_SUITE.erl
@@ -0,0 +1,550 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2018. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+-module(logger_stress_SUITE).
+
+-compile(export_all).
+
+-include_lib("common_test/include/ct_event.hrl").
+-include_lib("kernel/include/logger.hrl").
+-include_lib("kernel/src/logger_h_common.hrl").
+
+-ifdef(SAVE_STATS).
+  -define(COLLECT_STATS(_All_,_Procs_),
+          ct:pal("~p",[stats(_All_,_Procs_)])).
+-else.
+  -define(COLLECT_STATS(_All_,_Procs__), ok).
+-endif.
+
+-define(TEST_DURATION,120). % seconds
+
+suite() ->
+    [{timetrap,{minutes,3}},
+     {ct_hooks,[logger_test_lib]}].
+
+init_per_suite(Config) ->
+    Config.
+
+end_per_suite(_Config) ->
+    ok.
+
+init_per_group(_Group, Config) ->
+    Config.
+
+end_per_group(_Group, _Config) ->
+    ok.
+
+init_per_testcase(_TestCase, Config) ->
+    Config.
+
+end_per_testcase(Case, Config) ->
+    try apply(?MODULE,Case,[cleanup,Config])
+    catch error:undef -> ok
+    end,
+    ok.
+
+groups() ->
+    [].
+
+all() -> 
+    [allow_events,
+     reject_events,
+     std_handler,
+     disk_log_handler,
+     std_handler_time,
+     std_handler_time_big,
+     disk_log_handler_time,
+     disk_log_handler_time_big,
+     emulator_events,
+     remote_events,
+     remote_to_disk_log,
+     remote_emulator_events,
+     remote_emulator_to_disk_log].
+
+%%%-----------------------------------------------------------------
+%%% Test cases
+%%%-----------------------------------------------------------------
+%% Time from log macro call to handler callback
+allow_events(Config) ->
+    {ok,_,Node} =
+        logger_test_lib:setup(Config,
+                              [{logger,
+                                [{handler,default,?MODULE,#{}}]},
+                               {logger_level,notice}]),
+    N = 100000,
+    {T,_} = timer:tc(fun() -> rpc:call(Node,?MODULE,nlogs,[N]) end),
+    IOPS = N * 1000/T, % log events allowed per millisecond
+    ct_event:notify(#event{name = benchmark_data,
+                           data = [{value,IOPS}]}),
+    {comment,io_lib:format("~.2f accepted events pr millisecond",
+                           [IOPS])}.
+
+%% Time from log macro call to reject (log level)
+reject_events(Config) ->
+    {ok,_,Node} =
+        logger_test_lib:setup(Config,
+                              [{logger,
+                                [{handler,default,?MODULE,#{}}]},
+                               {logger_level,error}]),
+    N = 1000000,
+    {T,_} = timer:tc(fun() -> rpc:call(Node,?MODULE,nlogs,[N]) end),
+    IOPS = N * 1000/T, % log events rejected per millisecond
+    ct_event:notify(#event{name = benchmark_data,
+                           data = [{value,IOPS}]}),
+    {comment,io_lib:format("~.2f rejected events pr millisecond",
+                           [IOPS])}.
+
+%% Cascading failure that produce gen_server and proc_lib reports -
+%% how many of the produced log events are actually written to a log
+%% with logger_std_h file handler.
+std_handler(Config) ->
+    {ok,_,Node} =
+        logger_test_lib:setup(Config,
+                              [{logger,
+                                [{handler,default,logger_std_h,
+                                  #{config=>#{type=>{file,"default.log"}}}}]}]),
+
+    cascade({Node,{logger_backend,log_allowed,2},[]},
+            {Node,{logger_std_h,write,4},[{default,logger_std_h_default}]},
+            fun otp_cascading/0).
+std_handler(cleanup,_Config) ->
+    _ = file:delete("default.log"),
+    ok.
+
+%% Disable overload protection and just print a lot - measure time.
+%% The IOPS reported is the number of log events written per millisecond.
+std_handler_time(Config) ->
+    measure_handler_time(logger_std_h,#{type=>{file,"default.log"}},Config).
+std_handler_time(cleanup,_Config) ->
+    _ = file:delete("default.log"),
+    ok.
+
+std_handler_time_big(Config) ->
+    measure_handler_time_big(logger_std_h,#{type=>{file,"default.log"}},Config).
+std_handler_time_big(cleanup,_Config) ->
+    _ = file:delete("default.log"),
+    ok.
+
+%% Cascading failure that produce gen_server and proc_lib reports -
+%% how many of the produced log events are actually written to a log
+%% with logger_disk_log_h wrap file handler.
+disk_log_handler(Config) ->
+    {ok,_,Node} =
+        logger_test_lib:setup(Config,
+                              [{logger,
+                                [{handler,default,logger_disk_log_h,#{}}]}]),
+    cascade({Node,{logger_backend,log_allowed,2},[]},
+            {Node,{logger_disk_log_h,write,4},
+             [{default,logger_disk_log_h_default}]},
+            fun otp_cascading/0).
+disk_log_handler(cleanup,_Config) ->
+    Files = filelib:wildcard("default.log.*"),
+    [_ = file:delete(F) || F <- Files],
+    ok.
+
+%% Disable overload protection and just print a lot - measure time.
+%% The IOPS reported is the number of log events written per millisecond.
+disk_log_handler_time(Config) ->
+    measure_handler_time(logger_disk_log_h,#{type=>halt},Config).
+disk_log_handler_time(cleanup,_Config) ->
+    _ = file:delete("default"),
+    ok.
+
+disk_log_handler_time_big(Config) ->
+    measure_handler_time_big(logger_disk_log_h,#{type=>halt},Config).
+disk_log_handler_time_big(cleanup,_Config) ->
+    _ = file:delete("default"),
+    ok.
+
+%% Cascading failure that produce log events from the emulator - how
+%% many of the produced log events pass through the proxy.
+emulator_events(Config) ->
+    {ok,_,Node} =
+        logger_test_lib:setup(Config,
+                              [{logger,
+                                [{handler,default,?MODULE,#{}}]}]),
+    cascade({Node,{?MODULE,producer,0},[]},
+            {Node,{?MODULE,log,2},[{proxy,logger_proxy}]},
+            fun em_cascading/0).
+
+%% Cascading failure that produce gen_server and proc_lib reports on
+%% remote node - how many of the produced log events pass through the
+%% proxy.
+remote_events(Config) ->
+    {ok,_,Node1} =
+        logger_test_lib:setup([{postfix,1}|Config],
+                              [{logger,
+                                [{handler,default,?MODULE,#{}}]}]),
+    {ok,_,Node2} =
+        logger_test_lib:setup([{postfix,2}|Config],[]),
+    cascade({Node2,{logger_backend,log_allowed,2},[{remote_proxy,logger_proxy}]},
+            {Node1,{?MODULE,log,2},[{local_proxy,logger_proxy}]},
+            fun otp_cascading/0).
+
+%% Cascading failure that produce gen_server and proc_lib reports on
+%% remote node - how many of the produced log events are actually
+%% written to a log with logger_disk_log_h wrap file handler.
+remote_to_disk_log(Config) ->
+    {ok,_,Node1} =
+        logger_test_lib:setup([{postfix,1}|Config],
+                              [{logger,
+                                [{handler,default,logger_disk_log_h,#{}}]}]),
+    {ok,_,Node2} =
+        logger_test_lib:setup([{postfix,2}|Config],[]),
+    cascade({Node2,{logger_backend,log_allowed,2},[{remote_proxy,logger_proxy}]},
+            {Node1,{logger_disk_log_h,write,4},
+             [{local_proxy,logger_proxy},
+              {local_default,logger_disk_log_h_default}]},
+            fun otp_cascading/0).
+remote_to_disk_log(cleanup,_Config) ->
+    Files = filelib:wildcard("default.log.*"),
+    [_ = file:delete(F) || F <- Files],
+    ok.
+
+%% Cascading failure that produce log events from the emulator on
+%% remote node - how many of the produced log events pass through the
+%% proxy.
+remote_emulator_events(Config) ->
+    {ok,_,Node1} =
+        logger_test_lib:setup([{postfix,1}|Config],
+                              [{logger,
+                                [{handler,default,?MODULE,#{}}]}]),
+    {ok,_,Node2} =
+        logger_test_lib:setup([{postfix,2}|Config],[]),
+    cascade({Node2,{?MODULE,producer,0},[{remote_proxy,logger_proxy}]},
+            {Node1,{?MODULE,log,2},[{local_proxy,logger_proxy}]},
+            fun em_cascading/0).
+
+%% Cascading failure that produce log events from the emulator on
+%% remote node - how many of the produced log events are actually
+%% written to a log with logger_disk_log_h wrap file handler.
+remote_emulator_to_disk_log(Config) ->
+    {ok,_,Node1} =
+        logger_test_lib:setup([{postfix,1}|Config],
+                              [{logger,
+                                [{handler,default,logger_disk_log_h,#{}}]}]),
+    {ok,_,Node2} =
+        logger_test_lib:setup([{postfix,2}|Config],[]),
+    cascade({Node2,{?MODULE,producer,0},[{remote_proxy,logger_proxy}]},
+            {Node1,{logger_disk_log_h,write,4},
+             [{local_proxy,logger_proxy},
+              {local_default,logger_disk_log_h_default}]},
+            fun em_cascading/0).
+remote_emulator_to_disk_log(cleanup,_Config) ->
+    Files = filelib:wildcard("default.log.*"),
+    [_ = file:delete(F) || F <- Files],
+    ok.
+
+%%%-----------------------------------------------------------------
+%%% Internal functions
+measure_handler_time(Module,HCfg,Config) ->
+    measure_handler_time(Module,100000,small_fa(),millisecond,HCfg,#{},Config).
+
+measure_handler_time_big(Module,HCfg,Config) ->
+    FCfg = #{chars_limit=>4096, max_size=>1024},
+    measure_handler_time(Module,100,big_fa(),second,HCfg,FCfg,Config).
+
+measure_handler_time(Module,N,FA,Unit,HCfg,FCfg,Config) ->
+    {ok,_,Node} =
+        logger_test_lib:setup(
+          Config,
+          [{logger,
+            [{handler,default,Module,
+              #{formatter => {logger_formatter,
+                              maps:merge(#{legacy_header=>false,
+                                           single_line=>true},FCfg)},
+                config=>maps:merge(#{sync_mode_qlen => N+1,
+                                     drop_mode_qlen => N+1,
+                                     flush_qlen => N+1,
+                                     burst_limit_enable => false,
+                                     filesync_repeat_interval => no_repeat},
+                                   HCfg)}}]}]),
+    %% HPid = rpc:call(Node,erlang,whereis,[?name_to_reg_name(Module,default)]),
+    %% {links,[_,FCPid]} = rpc:call(Node,erlang,process_info,[HPid,links]),
+    T0 = erlang:monotonic_time(millisecond),
+    ok = rpc:call(Node,?MODULE,nlogs_wait,[N,FA,Module]),
+    %% ok = rpc:call(Node,fprof,apply,[fun ?MODULE:nlogs_wait/2,[N div 10,FA,Module],[{procs,[HPid,FCPid]}]]),
+    T1 = erlang:monotonic_time(millisecond),
+    T = T1-T0,
+    M = case Unit of
+            millisecond -> 1;
+            second -> 1000
+        end,
+    IOPS = M*N/T,
+    ct:pal("N: ~p~nT: ~p~nIOPS: ~.2f events pr ~w",[N,T,IOPS,Unit]),
+    %% Stats = rpc:call(Node,logger_olp,info,[?name_to_reg_name(Module,default)]),
+    %% ct:pal("Stats: ~p",[Stats]),
+    ct_event:notify(#event{name = benchmark_data,
+                           data = [{value,IOPS}]}),
+    {comment,io_lib:format("~.2f events written pr ~w",[IOPS,Unit])}.
+
+nlogs_wait(N,{F,A},Module) ->
+    group_leader(whereis(user),self()),
+    [?LOG_NOTICE(F,A) || _ <- lists:seq(1,N)],
+    wait(Module).
+
+wait(Module) ->
+    case Module:filesync(default) of
+        {error,handler_busy} ->
+            wait(Module);
+        ok ->
+            ok
+    end.
+
+small_fa() ->
+    Str = "\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+        "[\\]^_`abcdefghijklmnopqr",
+    {"~ts",[Str]}.
+
+big_fa() ->
+    {"~p",[lists:duplicate(1048576,"a")]}.
+
+nlogs(N) ->
+    group_leader(whereis(user),self()),
+    Str = "\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+        "[\\]^_`abcdefghijklmnopqr",
+    [?LOG_NOTICE(Str) || _ <- lists:seq(1,N)],
+    ok.
+
+%% cascade(ProducerInfo,ConsumerInfo,TestFun)
+cascade({PNode,PMFA,_PStatProcs},{CNode,CMFA,_CStatProcs},TestFun) ->
+    Tab  = ets:new(counter,[set,public]),
+    ets:insert(Tab,{producer,0}),
+    ets:insert(Tab,{consumer,0}),
+    dbg:tracer(process,{fun tracer/2,{Tab,PNode,CNode}}),
+    dbg:n(PNode),
+    dbg:n(CNode),
+    dbg:cn(node()),
+    dbg:p(all,[call,arity]),
+    dbg:tpl(PMFA,[]),
+    dbg:tpl(CMFA,[]),
+
+    Pid = rpc:call(CNode,?MODULE,wrap_test,[PNode,TestFun]),
+    MRef = erlang:monitor(process,Pid),
+    TO = ?TEST_DURATION*1000,
+    receive {'DOWN',MRef,_,_,Reason} ->
+            ct:fail({remote_pid_down,Reason})
+    after TO ->
+            All = ets:lookup_element(Tab,producer,2),
+            Written = ets:lookup_element(Tab,consumer,2),
+            dbg:stop_clear(),
+            ?COLLECT_STATS(All,
+                           [{PNode,P,Id} || {Id,P} <- _PStatProcs] ++
+                               [{CNode,P,Id} || {Id,P} <- _CStatProcs]),
+            Ratio = Written/All * 100,
+            ct_event:notify(#event{name = benchmark_data,
+                                   data = [{value,Ratio}]}),
+            {comment,io_lib:format("~p % (~p written, ~p produced)",
+                                   [round(Ratio),Written,All])}
+    end.
+
+wrap_test(Fun) ->
+    wrap_test(node(),Fun).
+wrap_test(Node,Fun) ->
+    reset(),
+    group_leader(whereis(user),self()),
+    rpc:call(Node,?MODULE,do_fun,[Fun]).
+
+do_fun(Fun) ->
+    reset(),
+    Fun().
+
+reset() ->
+    reset([logger_std_h_default, logger_disk_log_h_default, logger_proxy]).
+reset([P|Ps]) ->
+    is_pid(whereis(P)) andalso logger_olp:reset(P),
+    reset(Ps);
+reset([]) ->
+    ok.
+
+
+tracer({trace,_,call,{?MODULE,producer,_}},{Tab,_PNode,_CNode}=S) ->
+    ets:update_counter(Tab,producer,1),
+    S;
+tracer({trace,Pid,call,{logger_backend,log_allowed,_}},{Tab,PNode,_CNode}=S) when node(Pid)=:=PNode ->
+    ets:update_counter(Tab,producer,1),
+    S;
+tracer({trace,_,call,{?MODULE,log,_}},{Tab,_PNode,_CNode}=S) ->
+    ets:update_counter(Tab,consumer,1),
+    S;
+tracer({trace,_,call,{_,write,_}},{Tab,_PNode,_CNode}=S) ->
+    ets:update_counter(Tab,consumer,1),
+    S;
+tracer(_,S) ->
+    S.
+
+
+%%%-----------------------------------------------------------------
+%%% Collect statistics
+-define(STAT_KEYS,
+        [burst_drops,
+         calls,
+         casts,
+         drops,
+         flushed,
+         flushes,
+         freq,
+         last_qlen,
+         max_qlen,
+         time,
+         writes]).
+-define(EVENT_KEYS,
+        [calls,casts,flushed]).
+
+stats(All,Procs) ->
+    NI = [{Id,rpc:call(N,logger_olp,info,[P])} || {N,P,Id}<-Procs],
+    [{all,All}|[stats(Id,I,All) || {Id,I} <- NI]].
+
+stats(Id,Info,All) ->
+    S = maps:with(?STAT_KEYS,Info),
+    AllOnProc = lists:sum(maps:values(maps:with(?EVENT_KEYS,S))),
+    if All>0 ->
+            Writes = maps:get(writes,S),
+            {_,ActiveTime} = maps:get(time,S),
+            Rate = round(100*Writes/All),
+            RateOnProc =
+                if AllOnProc>0 ->
+                        round(100*Writes/AllOnProc);
+                   true ->
+                        0
+                end,
+            AvFreq =
+                if ActiveTime>0 ->
+                        round(Writes/ActiveTime);
+                   true ->
+                        0
+                end,
+            {Id,
+             {stats,S},
+             {rate,Rate},
+             {rate_on_proc,RateOnProc},
+             {av_freq,AvFreq}};
+       true ->
+            {Id,none}
+    end.
+
+%%%-----------------------------------------------------------------
+%%% Spawn a lot of processes that crash repeatedly, causing a lot of
+%%% error reports from the emulator.
+em_cascading() ->
+    spawn(fun() -> super() end).
+
+super() ->
+    process_flag(trap_exit,true),
+    spawn_link(fun server/0),
+    [spawn_link(fun client/0) || _<-lists:seq(1,10000)],
+    super_loop().
+
+super_loop() ->
+    receive
+        {'EXIT',_,server} ->
+            spawn_link(fun server/0),
+            super_loop();
+        {'EXIT',_,_} ->
+            _L = lists:sum(lists:seq(1,10000)),
+            spawn_link(fun client/0),
+            super_loop()
+    end.
+
+client() ->
+    receive
+    after 1 ->
+            case whereis(server) of
+                Pid when is_pid(Pid) ->
+                    ok;
+                undefined ->
+                    producer(),
+                    erlang:error(some_exception)
+            end
+    end,
+    client().
+
+server() ->
+    register(server,self()),
+    receive
+    after 3000 ->
+            exit(server)
+    end.
+        
+
+%%%-----------------------------------------------------------------
+%%% Create a supervisor tree with processes that crash repeatedly,
+%%% causing a lot of supervisor reports and crashreports
+otp_cascading() ->
+    {ok,Pid} = supervisor:start_link({local,otp_super}, ?MODULE, [otp_super]),
+    unlink(Pid),
+    Pid.
+
+otp_server_sup() ->
+    supervisor:start_link({local,otp_server_sup},?MODULE,[otp_server_sup]).
+
+otp_client_sup(N) ->
+    supervisor:start_link({local,otp_client_sup},?MODULE,[otp_client_sup,N]).
+
+otp_server() ->
+    gen_server:start_link({local,otp_server},?MODULE,[otp_server],[]).
+
+otp_client() ->
+    gen_server:start_link(?MODULE,[otp_client],[]).
+
+init([otp_super]) ->
+    {ok, {{one_for_one, 200, 10},
+            [{client_sup,
+                    {?MODULE, otp_client_sup, [10000]},
+                    permanent, 1000, supervisor, [?MODULE]},
+             {server_sup,
+                    {?MODULE, otp_server_sup, []},
+                    permanent, 1000, supervisor, [?MODULE]}
+            ]}};
+init([otp_server_sup]) ->
+    {ok, {{one_for_one, 2, 10},
+            [{server,
+                    {?MODULE, otp_server, []},
+                    permanent, 1000, worker, [?MODULE]}
+            ]}};
+init([otp_client_sup,N]) ->
+    spawn(fun() ->
+                  [supervisor:start_child(otp_client_sup,[])
+                   || _ <- lists:seq(1,N)]
+          end),
+    {ok, {{simple_one_for_one, N*10, 1},
+            [{client,
+                    {?MODULE, otp_client, []},
+                    permanent, 1000, worker, [?MODULE]}
+            ]}};
+init([otp_server]) ->
+    {ok, server, 10000};
+init([otp_client]) ->
+    {ok, client,1}.
+
+handle_info(timeout, client) ->
+    true = is_pid(whereis(otp_server)),
+    {noreply,client,1};
+handle_info(timeout, server) ->
+    exit(self(), some_error).
+
+%%%-----------------------------------------------------------------
+%%% Logger callbacks
+log(_LogEvent,_Config) ->
+    ok.
+
+%%%-----------------------------------------------------------------
+%%% Function to trace on for counting produced emulator messages
+producer() ->
+    ok.
diff --git a/lib/kernel/test/logger_test_lib.erl b/lib/kernel/test/logger_test_lib.erl
index 81eb9ce5eb..be4bc427fb 100644
--- a/lib/kernel/test/logger_test_lib.erl
+++ b/lib/kernel/test/logger_test_lib.erl
@@ -28,11 +28,17 @@
          post_end_per_testcase/5, post_end_per_suite/3]).
 
 setup(Config,Vars) ->
+    Postfix = case proplists:get_value(postfix, Config) of
+                  undefined -> "";
+                  P -> ["_",P]
+              end,
     FuncStr = lists:concat([proplists:get_value(suite, Config), "_",
-                            proplists:get_value(tc, Config)]),
+                            proplists:get_value(tc, Config)|
+                            Postfix]),
     ConfigFileName = filename:join(proplists:get_value(priv_dir, Config), FuncStr),
     file:write_file(ConfigFileName ++ ".config", io_lib:format("[{kernel, ~p}].",[Vars])),
-    case test_server:start_node(proplists:get_value(tc, Config), slave,
+    Sname = lists:concat([proplists:get_value(tc,Config)|Postfix]),
+    case test_server:start_node(Sname, slave,
                                 [{args, ["-pa ",filename:dirname(code:which(?MODULE)),
                                          " -boot start_sasl -kernel start_timer true "
                                          "-config ",ConfigFileName]}]) of
diff --git a/lib/kernel/test/seq_trace_SUITE.erl b/lib/kernel/test/seq_trace_SUITE.erl
index ee8f4e94f8..663f910751 100644
--- a/lib/kernel/test/seq_trace_SUITE.erl
+++ b/lib/kernel/test/seq_trace_SUITE.erl
@@ -19,6 +19,9 @@
 %%
 -module(seq_trace_SUITE).
 
+%% label_capability_mismatch needs to run a part of the test on an OTP 20 node.
+-compile(r20).
+
 -export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1, 
 	 init_per_group/2,end_per_group/2,
 	 init_per_testcase/2,end_per_testcase/2]).
@@ -358,7 +361,7 @@ do_incompatible_labels(Rel) ->
     Mdir = filename:dirname(Dir),
     true = rpc:call(Node,code,add_patha,[Mdir]),
     seq_trace:reset_trace(),
-    rpc:call(Node,?MODULE,start_tracer,[]),
+    true = is_pid(rpc:call(Node,?MODULE,start_tracer,[])),
     Receiver = spawn(Node,?MODULE,one_time_receiver,[]),
 
     %% This node does not support arbitrary labels, so it must fail with a
@@ -385,7 +388,7 @@ do_compatible_labels(Rel) ->
     Mdir = filename:dirname(Dir),
     true = rpc:call(Node,code,add_patha,[Mdir]),
     seq_trace:reset_trace(),
-    rpc:call(Node,?MODULE,start_tracer,[]),
+    true = is_pid(rpc:call(Node,?MODULE,start_tracer,[])),
     Receiver = spawn(Node,?MODULE,one_time_receiver,[]),
 
     %% This node does not support arbitrary labels, but small integers should
diff --git a/lib/kernel/vsn.mk b/lib/kernel/vsn.mk
index 4b43c6ae9d..b1ae513223 100644
--- a/lib/kernel/vsn.mk
+++ b/lib/kernel/vsn.mk
@@ -1 +1 @@
-KERNEL_VSN = 6.2
+KERNEL_VSN = 6.3.1
diff --git a/lib/megaco/configure.in b/lib/megaco/configure.in
index eaa875d0a3..bae6144abe 100644
--- a/lib/megaco/configure.in
+++ b/lib/megaco/configure.in
@@ -22,10 +22,6 @@ dnl
 dnl define([AC_CACHE_LOAD], )dnl
 dnl define([AC_CACHE_SAVE], )dnl
 
-if test "x$no_recursion" != "xyes" -a "x$OVERRIDE_CONFIG_CACHE" = "x"; then
-    # We do not want to use a common cache!
-    cache_file=/dev/null
-fi
 
 AC_INIT(vsn.mk)
 
@@ -42,11 +38,14 @@ else
     host_os=win32
 fi
 
-
 dnl ----------------------------------------------------------------------
 dnl Checks for programs.
 dnl ----------------------------------------------------------------------
 
+AC_PROG_CC
+
+LM_WINDOWS_ENVIRONMENT
+
 AC_DEFUN(ERL_REENTRANT_FLEX,
 [flex_compile='$LEX -R -Pconftest -oconftest.c conftest.flex 1>&AC_FD_CC'
 changequote(253, 273)dnl
@@ -188,111 +187,7 @@ CFLAGS="$CFLAGS $sanitizers"
 LDFLAGS="$LDFLAGS $sanitizers"
 ])
 
-dnl
-dnl If ${ERL_TOP}/make/otp_ded.mk.in exists and contains DED_MK_VSN > 0,
-dnl every thing releted to compiling Dynamic Erlang Drivers can be found
-dnl in $(ERL_TOP)/make/$(TARGET)/ded.mk at compile time. If not, try to
-dnl figure these things out.
-dnl
-
-AC_MSG_CHECKING([for usable Dynamic Erlang Driver configuration])
-[
-  ded_mk_in="${ERL_TOP}/make/otp_ded.mk.in"
-  ded_mk_vsn=
-  test -r "$ded_mk_in" &&
-    ded_mk_vsn=`sed -n "s/^DED_MK_VSN[	 ]*=[	 ]*\(.*\)/\1/p" < "$ded_mk_in"`
-  test "$ded_mk_vsn" != "" || ded_mk_vsn=0
-]
-
-if test $ded_mk_vsn -gt 0; then
-
-HAVE_USABLE_OTP_DED_MK=yes
-AC_MSG_RESULT([yes])
-
-CC=false
-AC_SUBST(CC)
-DED_LD=false
-AC_SUBST(DED_LD)
-
-else dnl --- begin no usable otp_ded.mk.in ---
-
-HAVE_USABLE_OTP_DED_MK=no
-AC_MSG_RESULT([no])
-
-dnl
-dnl C compiler (related) defs
-dnl
-
-AC_PROG_CC
-
-dnl
-dnl Flags to the C compiler
-dnl
-
-if test "X$host" = "Xwin32"; then
-  DED_CFLAGS="$CFLAGS"
-else
-  case $host_os in
-    darwin*)
-	CFLAGS="$CFLAGS -fno-common"
-	;;
-  esac
-
-  if test "x$GCC" = xyes; then
-	DED_CFLAGS="$CFLAGS -fPIC $DED_CFLAGS"
-  else
-	DED_CFLAGS="$CFLAGS $DED_CFLAGS"
-  fi
-fi
-
-dnl emulator includes needed
-DED_INCLUDES="-I${ERL_TOP}/erts/emulator/beam -I${ERL_TOP}/erts/include -I${ERL_TOP}/erts/include/$host -I${ERL_TOP}/erts/include/internal -I${ERL_TOP}/erts/include/internal/$host -I${ERL_TOP}/erts/emulator/sys/$ERLANG_OSTYPE"
-
-DED_THR_DEFS="-D_THREAD_SAFE -D_REENTRANT"
-
-case $host_os in
-	win32)
-		DED_LDFLAGS="-dll"
-	;;
-	solaris2*|sysv4*)
-		DED_LDFLAGS="-G"
-	;;
-	aix4*)
-		DED_LDFLAGS="-G -bnoentry -bexpall"
-	;;
-	freebsd2*)
-		# Non-ELF GNU linker
-		DED_LDFLAGS="-Bshareable"
-	;;
-	darwin*)
-		# Mach-O linker, a shared lib and a loadable
-		# object file is not the same thing.
-		DED_LDFLAGS="-bundle -flat_namespace -undefined suppress"
-		DED_LD="$CC"
-	;;
-	*)
-		# assume GNU linker and ELF
-		DED_LDFLAGS="-shared"
-	;;
-esac
-
-AC_CHECK_PROGS(DED_LD, [$LD ld.sh])
-AC_CHECK_TOOL(DED_LD, ld, no_ld)
-if test "$DED_LD" = no_ld; then
-  AC_MSG_ERROR([ld is required to build the flex scanner!])
-fi
-
-AC_MSG_CHECKING(for linker flags for loadable drivers)
-DED_LDFLAGS="$LDFLAGS $DED_LDFLAGS"
-AC_MSG_RESULT([$DED_LDFLAGS])
-
-fi dnl --- end no usable otp_ded.mk.in ---
-
-AC_SUBST(HAVE_USABLE_OTP_DED_MK)
-AC_SUBST(DED_CFLAGS)
-AC_SUBST(DED_INCLUDES)
-AC_SUBST(DED_THR_DEFS)
-AC_SUBST(DED_LDFLAGS)
+ERL_DED
 
 AC_CHECK_PROG(PERL, perl, perl, no_perl)
 if test "$PERL" = no_perl; then
diff --git a/lib/megaco/doc/src/megaco.xml b/lib/megaco/doc/src/megaco.xml
index d4a7451bfc..c7bcdfcd6f 100644
--- a/lib/megaco/doc/src/megaco.xml
+++ b/lib/megaco/doc/src/megaco.xml
@@ -32,7 +32,7 @@
     <rev>%VSN%</rev>
     <file>megaco.xml</file>
   </header>
-  <module>megaco</module>
+  <module since="">megaco</module>
   <modulesummary>Main API of the Megaco application</modulesummary>
   <description>
     <p>Interface module for the Megaco application</p>
@@ -135,7 +135,7 @@ megaco_incr_timer() = #megaco_incr_timer{}
 
   <funcs>
     <func>
-      <name>start() -> ok | {error, Reason}</name>
+      <name since="">start() -> ok | {error, Reason}</name>
       <fsummary>Starts the Megaco application</fsummary>
       <type>
         <v>Reason = term()</v>
@@ -153,7 +153,7 @@ megaco_incr_timer() = #megaco_incr_timer{}
     </func>
 
     <func>
-      <name>stop() -> ok | {error, Reason}</name>
+      <name since="">stop() -> ok | {error, Reason}</name>
       <fsummary>Stops the Megaco application</fsummary>
       <type>
         <v>Reason = term()</v>
@@ -166,7 +166,7 @@ megaco_incr_timer() = #megaco_incr_timer{}
     </func>
 
     <func>
-      <name>start_user(UserMid, Config) -> ok | {error, Reason}</name>
+      <name since="">start_user(UserMid, Config) -> ok | {error, Reason}</name>
       <fsummary>Initial configuration of a user</fsummary>
       <type>
         <v>UserMid = megaco_mid()</v>
@@ -188,7 +188,7 @@ megaco_incr_timer() = #megaco_incr_timer{}
     </func>
 
     <func>
-      <name>stop_user(UserMid) -> ok | {error, Reason}</name>
+      <name since="">stop_user(UserMid) -> ok | {error, Reason}</name>
       <fsummary>Delete the configuration of a user</fsummary>
       <type>
         <v>UserMid = megaco_mid()</v>
@@ -203,8 +203,8 @@ megaco_incr_timer() = #megaco_incr_timer{}
     </func>
 
     <func>
-      <name>user_info(UserMid) -> [{Item, Value}]</name>
-      <name>user_info(UserMid, Item) -> Value | exit(Reason)</name>
+      <name since="">user_info(UserMid) -> [{Item, Value}]</name>
+      <name since="">user_info(UserMid, Item) -> Value | exit(Reason)</name>
       <fsummary>Lookup user information</fsummary>
       <type>
         <v>Handle  = user_info_handle()</v>
@@ -703,7 +703,7 @@ megaco_incr_timer() = #megaco_incr_timer{}
     </func>
 
     <func>
-      <name>update_user_info(UserMid, Item, Value) -> ok | {error, Reason}</name>
+      <name since="">update_user_info(UserMid, Item, Value) -> ok | {error, Reason}</name>
       <fsummary>Update information about a user</fsummary>
       <type>
         <v>UserMid = megaco_mid() </v>
@@ -721,8 +721,8 @@ megaco_incr_timer() = #megaco_incr_timer{}
     </func>
 
     <func>
-      <name>conn_info(ConnHandle) -> [{Item, Value}]</name>
-      <name>conn_info(ConnHandle, Item) -> Value | exit(Reason)</name>
+      <name since="">conn_info(ConnHandle) -> [{Item, Value}]</name>
+      <name since="">conn_info(ConnHandle, Item) -> Value | exit(Reason)</name>
       <fsummary>Lookup information about an active connection</fsummary>
       <type>
         <v>ConnHandle = #megaco_conn_handle{}</v>
@@ -1222,7 +1222,7 @@ megaco_incr_timer() = #megaco_incr_timer{}
     </func>
 
     <func>
-      <name>update_conn_info(ConnHandle, Item, Value) -> ok | {error, Reason}</name>
+      <name since="">update_conn_info(ConnHandle, Item, Value) -> ok | {error, Reason}</name>
       <fsummary>Update information about an active connection</fsummary>
       <type>
         <v>ConnHandle = #megaco_conn_handle{}</v>
@@ -1241,8 +1241,8 @@ megaco_incr_timer() = #megaco_incr_timer{}
     </func>
 
     <func>
-      <name>system_info() -> [{Item, Value}] | exit(Reason)</name>
-      <name>system_info(Item) -> Value | exit(Reason)</name>
+      <name since="">system_info() -> [{Item, Value}] | exit(Reason)</name>
+      <name since="">system_info(Item) -> Value | exit(Reason)</name>
       <fsummary>Lookup system information</fsummary>
       <type>
         <v>Item = system_info_item()</v>
@@ -1289,7 +1289,7 @@ megaco_incr_timer() = #megaco_incr_timer{}
     </func>
 
     <func>
-      <name>info() -> Info</name>
+      <name since="">info() -> Info</name>
       <fsummary>All the information of the application</fsummary>
       <type>
         <v>Info = [{Key, Value}]</v>
@@ -1311,8 +1311,8 @@ megaco_incr_timer() = #megaco_incr_timer{}
     </func>
 
     <func>
-      <name>connect(ReceiveHandle, RemoteMid, SendHandle, ControlPid) -> {ok, ConnHandle} | {error, Reason}</name>
-      <name>connect(ReceiveHandle, RemoteMid, SendHandle, ControlPid, Extra) -> {ok, ConnHandle} | {error, Reason}</name>
+      <name since="">connect(ReceiveHandle, RemoteMid, SendHandle, ControlPid) -> {ok, ConnHandle} | {error, Reason}</name>
+      <name since="">connect(ReceiveHandle, RemoteMid, SendHandle, ControlPid, Extra) -> {ok, ConnHandle} | {error, Reason}</name>
       <fsummary>Establish a "virtual" connection</fsummary>
       <type>
         <v>ReceiveHandle = #megaco_receive_handle{}</v>
@@ -1436,7 +1436,7 @@ megaco_incr_timer() = #megaco_incr_timer{}
     </func>
 
     <func>
-      <name>disconnect(ConnHandle, DiscoReason) -> ok | {error, ErrReason}</name>
+      <name since="">disconnect(ConnHandle, DiscoReason) -> ok | {error, ErrReason}</name>
       <fsummary>Tear down a "virtual" connection</fsummary>
       <type>
         <v>ConnHandle  = conn_handle()</v>
@@ -1454,7 +1454,7 @@ megaco_incr_timer() = #megaco_incr_timer{}
     </func>
 
     <func>
-      <name>call(ConnHandle, Actions, Options) -> {ProtocolVersion, UserReply}</name>
+      <name since="">call(ConnHandle, Actions, Options) -> {ProtocolVersion, UserReply}</name>
       <fsummary>Sends one or more transaction request(s) and waits for the reply</fsummary>
       <type>
         <v>ConnHandle     = conn_handle()</v>
@@ -1545,7 +1545,7 @@ megaco_incr_timer() = #megaco_incr_timer{}
     </func>
 
     <func>
-      <name>cast(ConnHandle, Actions, Options) -> ok | {error, Reason}</name>
+      <name since="">cast(ConnHandle, Actions, Options) -> ok | {error, Reason}</name>
       <fsummary>Sends one or more transaction request(s) but does NOT wait for a reply</fsummary>
       <type>
         <v>ConnHandle     = conn_handle()</v>
@@ -1582,7 +1582,7 @@ megaco_incr_timer() = #megaco_incr_timer{}
     </func>
 
     <func>
-      <name>encode_actions(ConnHandle, Actions, Options) -> {ok, BinOrBins} | {error, Reason}</name>
+      <name since="">encode_actions(ConnHandle, Actions, Options) -> {ok, BinOrBins} | {error, Reason}</name>
       <fsummary>Encode action requests for one or more transaction request(s)</fsummary>
       <type>
         <v>ConnHandle     = conn_handle()</v>
@@ -1607,9 +1607,9 @@ megaco_incr_timer() = #megaco_incr_timer{}
     </func>
 
     <func>
-      <name>token_tag2string(Tag) -> Result</name>
-      <name>token_tag2string(Tag, EncoderMod) -> Result</name>
-      <name>token_tag2string(Tag, EncoderMod, Version) -> Result</name>
+      <name since="">token_tag2string(Tag) -> Result</name>
+      <name since="">token_tag2string(Tag, EncoderMod) -> Result</name>
+      <name since="">token_tag2string(Tag, EncoderMod, Version) -> Result</name>
       <fsummary>Convert a token tag to a string</fsummary>
       <type>
         <v>Tag = atom()</v>
@@ -1635,7 +1635,7 @@ megaco_incr_timer() = #megaco_incr_timer{}
     </func>
 
     <func>
-      <name>cancel(ConnHandle, CancelReason) -> ok | {error, ErrReason}</name>
+      <name since="">cancel(ConnHandle, CancelReason) -> ok | {error, ErrReason}</name>
       <fsummary>Cancel all outstanding messages for this connection</fsummary>
       <type>
         <v>ConnHandle   = conn_handle()</v>
@@ -1655,8 +1655,8 @@ megaco_incr_timer() = #megaco_incr_timer{}
     </func>
 
     <func>
-      <name>process_received_message(ReceiveHandle, ControlPid, SendHandle, BinMsg) -> ok</name>
-      <name>process_received_message(ReceiveHandle, ControlPid, SendHandle, BinMsg, Extra) -> ok</name>
+      <name since="">process_received_message(ReceiveHandle, ControlPid, SendHandle, BinMsg) -> ok</name>
+      <name since="">process_received_message(ReceiveHandle, ControlPid, SendHandle, BinMsg, Extra) -> ok</name>
       <fsummary>Process a received message</fsummary>
       <type>
         <v>ReceiveHandle = #megaco_receive_handle{}</v>
@@ -1755,8 +1755,8 @@ megaco_incr_timer() = #megaco_incr_timer{}
     </func>
 
     <func>
-      <name>receive_message(ReceiveHandle, ControlPid, SendHandle, BinMsg) -> ok</name>
-      <name>receive_message(ReceiveHandle, ControlPid, SendHandle, BinMsg, Extra) -> ok</name>
+      <name since="">receive_message(ReceiveHandle, ControlPid, SendHandle, BinMsg) -> ok</name>
+      <name since="">receive_message(ReceiveHandle, ControlPid, SendHandle, BinMsg, Extra) -> ok</name>
       <fsummary>Process a received message</fsummary>
       <type>
         <v>ReceiveHandle = #megaco_receive_handle{}</v>
@@ -1783,7 +1783,7 @@ megaco_incr_timer() = #megaco_incr_timer{}
     </func>
 
     <func>
-      <name>parse_digit_map(DigitMapBody) -> {ok, ParsedDigitMap} | {error, Reason}</name>
+      <name since="">parse_digit_map(DigitMapBody) -> {ok, ParsedDigitMap} | {error, Reason}</name>
       <fsummary>Parses a digit map body</fsummary>
       <type>
         <v>DigitMapBody       = string()</v>
@@ -1802,8 +1802,8 @@ megaco_incr_timer() = #megaco_incr_timer{}
     </func>
 
     <func>
-      <name>eval_digit_map(DigitMap) -> {ok, MatchResult} | {error, Reason}</name>
-      <name>eval_digit_map(DigitMap, Timers) -> {ok, MatchResult} | {error, Reason}</name>
+      <name since="">eval_digit_map(DigitMap) -> {ok, MatchResult} | {error, Reason}</name>
+      <name since="">eval_digit_map(DigitMap, Timers) -> {ok, MatchResult} | {error, Reason}</name>
       <fsummary>Collect digit map letters according to the digit map</fsummary>
       <type>
         <v>DigitMap           = #'DigitMapValue'{} | parsed_digit_map()</v>
@@ -1839,7 +1839,7 @@ megaco_incr_timer() = #megaco_incr_timer{}
     </func>
 
     <func>
-      <name>report_digit_event(DigitMapEvalPid, Events) -> ok | {error, Reason}</name>
+      <name since="">report_digit_event(DigitMapEvalPid, Events) -> ok | {error, Reason}</name>
       <fsummary>Send one or more events to the event collector process</fsummary>
       <type>
         <v>DigitMapEvalPid = pid()</v>
@@ -1866,7 +1866,7 @@ megaco_incr_timer() = #megaco_incr_timer{}
     </func>
 
     <func>
-      <name>test_digit_event(DigitMap, Events) -> {ok, Kind, Letters} | {error, Reason}</name>
+      <name since="">test_digit_event(DigitMap, Events) -> {ok, Kind, Letters} | {error, Reason}</name>
       <fsummary>Feed digit map collector with events and return the result</fsummary>
       <type>
         <v>DigitMap           = #'DigitMapValue'{} | parsed_digit_map()</v>
@@ -1900,7 +1900,7 @@ megaco_incr_timer() = #megaco_incr_timer{}
     </func>
 
     <func>
-      <name>encode_sdp(SDP) -> {ok, PP} | {error, Reason}</name>
+      <name since="">encode_sdp(SDP) -> {ok, PP} | {error, Reason}</name>
       <fsummary>Encode an SDP construct</fsummary>
       <type>
         <v>SDP = sdp_property_parm() | sdp_property_group() | sdp_property_groups() | asn1_NOVALUE</v>
@@ -1929,7 +1929,7 @@ megaco_incr_timer() = #megaco_incr_timer{}
     </func>
 
     <func>
-      <name>decode_sdp(PP) -> {ok, SDP} | {error, Reason}</name>
+      <name since="">decode_sdp(PP) -> {ok, SDP} | {error, Reason}</name>
       <fsummary>Decode an property parameter construct</fsummary>
       <type>
 	<v>PP = property_parm() | property_group() | property_groups() | asn1_NOVALUE</v>
@@ -1969,7 +1969,7 @@ megaco_incr_timer() = #megaco_incr_timer{}
     </func>
 
     <func>
-      <name>get_sdp_record_from_PropertGroup(Type, PG) -> [sdp()]</name>
+      <name since="">get_sdp_record_from_PropertGroup(Type, PG) -> [sdp()]</name>
       <fsummary>Get all sdp records of a certain type from a property group</fsummary>
       <type>
         <v>Type = v | c | m | o | a | b | t | r | z | k | s | i | u | e | p</v>
@@ -1986,8 +1986,8 @@ megaco_incr_timer() = #megaco_incr_timer{}
     </func>
 
     <func>
-      <name>versions1() -> {ok, VersionInfo} | {error, Reason}</name>
-      <name>versions2() -> {ok, Info} | {error, Reason}</name>
+      <name since="">versions1() -> {ok, VersionInfo} | {error, Reason}</name>
+      <name since="">versions2() -> {ok, Info} | {error, Reason}</name>
       <fsummary>Retreive various system and application info</fsummary>
       <type>
         <v>VersionInfo = [version_info()]</v>
@@ -2007,8 +2007,8 @@ megaco_incr_timer() = #megaco_incr_timer{}
     </func>
 
     <func>
-      <name>print_version_info() -> void()</name>
-      <name>print_version_info(VersionInfo) -> void()</name>
+      <name since="">print_version_info() -> void()</name>
+      <name since="">print_version_info(VersionInfo) -> void()</name>
       <fsummary>Formated print of result of the versions functions</fsummary>
       <type>
         <v>VersionInfo = [version_info()]</v>
@@ -2029,7 +2029,7 @@ megaco_incr_timer() = #megaco_incr_timer{}
     </func>
 
     <func>
-      <name>enable_trace(Level, Destination) -> void()</name>
+      <name since="">enable_trace(Level, Destination) -> void()</name>
       <fsummary>Start megaco tracing</fsummary>
       <type>
         <v>Level       = max | min | 0 &lt;= integer() &lt;= 100</v>
@@ -2057,7 +2057,7 @@ megaco_incr_timer() = #megaco_incr_timer{}
     </func>
 
     <func>
-      <name>disable_trace() -> void()</name>
+      <name since="">disable_trace() -> void()</name>
       <fsummary>Stop megaco tracing</fsummary>
       <desc>
         <p>This function is used to stop megaco tracing.</p>
@@ -2065,7 +2065,7 @@ megaco_incr_timer() = #megaco_incr_timer{}
       </desc>
     </func>
     <func>
-      <name>set_trace(Level) -> void()</name>
+      <name since="">set_trace(Level) -> void()</name>
       <fsummary>Change megaco trace level</fsummary>
       <type>
         <v>Level = max | min | 0 &lt;= integer() &lt;= 100</v>
@@ -2081,10 +2081,10 @@ megaco_incr_timer() = #megaco_incr_timer{}
     </func>
 
     <func>
-      <name>get_stats() -> {ok, TotalStats} | {error, Reason}</name>
-      <name>get_stats(GlobalCounter) -> {ok, CounterStats} | {error, Reason}</name>
-      <name>get_stats(ConnHandle) -> {ok, ConnHandleStats} | {error, Reason}</name>
-      <name>get_stats(ConnHandle, Counter) -> {ok, integer()} | {error, Reason}</name>
+      <name since="">get_stats() -> {ok, TotalStats} | {error, Reason}</name>
+      <name since="">get_stats(GlobalCounter) -> {ok, CounterStats} | {error, Reason}</name>
+      <name since="">get_stats(ConnHandle) -> {ok, ConnHandleStats} | {error, Reason}</name>
+      <name since="">get_stats(ConnHandle, Counter) -> {ok, integer()} | {error, Reason}</name>
       <fsummary></fsummary>
       <type>
         <v>TotalStats = [total_stats()]</v>
@@ -2110,8 +2110,8 @@ megaco_incr_timer() = #megaco_incr_timer{}
     </func>
 
     <func>
-      <name>reset_stats() -> void()</name>
-      <name>reset_stats(ConnHandle) -> void()</name>
+      <name since="">reset_stats() -> void()</name>
+      <name since="">reset_stats(ConnHandle) -> void()</name>
       <fsummary></fsummary>
       <type>
         <v>ConnHandle = conn_handle()</v>
@@ -2123,7 +2123,7 @@ megaco_incr_timer() = #megaco_incr_timer{}
     </func>
 
     <func>
-      <name>test_request(ConnHandle, Version, EncodingMod, EncodingConfig, Actions) -> {MegaMsg, EncodeRes}</name>
+      <name since="">test_request(ConnHandle, Version, EncodingMod, EncodingConfig, Actions) -> {MegaMsg, EncodeRes}</name>
       <fsummary>Tests if the Actions argument is correct</fsummary>
       <type>
         <v>ConnHandle     = conn_handle()</v>
@@ -2150,7 +2150,7 @@ megaco_incr_timer() = #megaco_incr_timer{}
     </func>
 
     <func>
-      <name>test_reply(ConnHandle, Version, EncodingMod, EncodingConfig, Reply) -> {MegaMsg, EncodeRes}</name>
+      <name since="">test_reply(ConnHandle, Version, EncodingMod, EncodingConfig, Reply) -> {MegaMsg, EncodeRes}</name>
       <fsummary>Tests if the Reply argument is correct</fsummary>
       <type>
         <v>ConnHandle     = conn_handle()</v>
diff --git a/lib/megaco/doc/src/megaco_codec_meas.xml b/lib/megaco/doc/src/megaco_codec_meas.xml
index 13cc3eb834..5184fe392e 100644
--- a/lib/megaco/doc/src/megaco_codec_meas.xml
+++ b/lib/megaco/doc/src/megaco_codec_meas.xml
@@ -32,7 +32,7 @@
     <rev>%VSN%</rev>
     <file>megaco_codec_meas.xml</file>
   </header>
-  <module>megaco_codec_meas</module>
+  <module since="">megaco_codec_meas</module>
   <modulesummary>This module implements a simple megaco codec measurement tool.</modulesummary>
   <description>
     <p>This module implements a simple megaco codec measurement tool.</p>
@@ -43,8 +43,8 @@
 
   <funcs>
     <func>
-      <name>start() -> void()</name>
-      <name>start(MessagePackage) -> void()</name>
+      <name since="">start() -> void()</name>
+      <name since="">start(MessagePackage) -> void()</name>
       <fsummary></fsummary>
       <type>
         <v>MessagePackageRaw = message_package()</v>
diff --git a/lib/megaco/doc/src/megaco_codec_mstone1.xml b/lib/megaco/doc/src/megaco_codec_mstone1.xml
index 2ff959a648..507a790c71 100644
--- a/lib/megaco/doc/src/megaco_codec_mstone1.xml
+++ b/lib/megaco/doc/src/megaco_codec_mstone1.xml
@@ -32,7 +32,7 @@
     <rev>%VSN%</rev>
     <file>megaco_codec_mstone1.xml</file>
   </header>
-  <module>megaco_codec_mstone1</module>
+  <module since="">megaco_codec_mstone1</module>
   <modulesummary>This module implements a simple megaco codec-based performance tool.</modulesummary>
   <description>
     <p>This module implements the <em>mstone1</em> tool, 
@@ -44,9 +44,9 @@
 
   <funcs>
     <func>
-      <name>start() -> void()</name>
-      <name>start(MessagePackage) -> void()</name>
-      <name>start(MessagePackage, Factor) -> void()</name>
+      <name since="">start() -> void()</name>
+      <name since="">start(MessagePackage) -> void()</name>
+      <name since="">start(MessagePackage, Factor) -> void()</name>
       <fsummary></fsummary>
       <type>
         <v>MessagePackage = message_package()</v>
@@ -63,9 +63,9 @@
     </func>
 
     <func>
-      <name>start_flex() -> void()</name>
-      <name>start_flex(MessagePackage) -> void()</name>
-      <name>start_flex(MessagePackage, Factor) -> void()</name>
+      <name since="">start_flex() -> void()</name>
+      <name since="">start_flex(MessagePackage) -> void()</name>
+      <name since="">start_flex(MessagePackage, Factor) -> void()</name>
       <fsummary></fsummary>
       <type>
         <v>MessagePackage = message_package()</v>
@@ -83,9 +83,9 @@
     </func>
 
     <func>
-      <name>start_only_drv() -> void()</name>
-      <name>start_only_drv(MessagePackage) -> void()</name>
-      <name>start_only_drv(MessagePackage, Factor) -> void()</name>
+      <name since="">start_only_drv() -> void()</name>
+      <name since="">start_only_drv(MessagePackage) -> void()</name>
+      <name since="">start_only_drv(MessagePackage, Factor) -> void()</name>
       <fsummary></fsummary>
       <type>
         <v>MessagePackage = message_package()</v>
@@ -105,9 +105,9 @@
     </func>
 
     <func>
-      <name>start_no_drv() -> void()</name>
-      <name>start_no_drv(MessagePackage) -> void()</name>
-      <name>start_no_drv(MessagePackage, Factor) -> void()</name>
+      <name since="">start_no_drv() -> void()</name>
+      <name since="">start_no_drv(MessagePackage) -> void()</name>
+      <name since="">start_no_drv(MessagePackage, Factor) -> void()</name>
       <fsummary></fsummary>
       <type>
         <v>MessagePackage = message_package()</v>
diff --git a/lib/megaco/doc/src/megaco_codec_mstone2.xml b/lib/megaco/doc/src/megaco_codec_mstone2.xml
index 3da30d4f99..03990f5c3d 100644
--- a/lib/megaco/doc/src/megaco_codec_mstone2.xml
+++ b/lib/megaco/doc/src/megaco_codec_mstone2.xml
@@ -32,7 +32,7 @@
     <rev>%VSN%</rev>
     <file>megaco_codec_mstone2.xml</file>
   </header>
-  <module>megaco_codec_mstone2</module>
+  <module since="">megaco_codec_mstone2</module>
   <modulesummary>This module implements a simple megaco codec-based performance tool.</modulesummary>
   <description>
     <p>This module implements the <em>mstone2</em> tool, 
@@ -44,8 +44,8 @@
 
   <funcs>
     <func>
-      <name>start() -> void()</name>
-      <name>start(MessagePackage) -> void()</name>
+      <name since="">start() -> void()</name>
+      <name since="">start(MessagePackage) -> void()</name>
       <fsummary></fsummary>
       <type>
         <v>MessagePackage = message_package()</v>
diff --git a/lib/megaco/doc/src/megaco_codec_transform.xml b/lib/megaco/doc/src/megaco_codec_transform.xml
index 26b83c3799..392868fdfa 100644
--- a/lib/megaco/doc/src/megaco_codec_transform.xml
+++ b/lib/megaco/doc/src/megaco_codec_transform.xml
@@ -32,7 +32,7 @@
     <rev>%VSN%</rev>
     <file>megaco_codec_transform.xml</file>
   </header>
-  <module>megaco_codec_transform</module>
+  <module since="">megaco_codec_transform</module>
   <modulesummary>Megaco message transformation utility.</modulesummary>
 
   <description>
@@ -45,8 +45,8 @@
 
   <funcs>
     <func>
-      <name>export_messages() -> void()</name>
-      <name>export_messages(MessagePackage) -> void()</name>
+      <name since="">export_messages() -> void()</name>
+      <name since="">export_messages(MessagePackage) -> void()</name>
       <fsummary></fsummary>
       <type>
         <v>MessagePackage = atom()</v>
diff --git a/lib/megaco/doc/src/megaco_edist_compress.xml b/lib/megaco/doc/src/megaco_edist_compress.xml
index d5c7c7224d..16443e469c 100644
--- a/lib/megaco/doc/src/megaco_edist_compress.xml
+++ b/lib/megaco/doc/src/megaco_edist_compress.xml
@@ -32,7 +32,7 @@
     <rev>%VSN%</rev>
     <file>megaco_edist_compress.xml</file>
   </header>
-  <module>megaco_edist_compress</module>
+  <module since="">megaco_edist_compress</module>
   <modulesummary>Megaco erlang dist compress behaviour.</modulesummary>
   <description>
     <p>The following functions should be exported from a 
@@ -40,7 +40,7 @@
   </description>
   <funcs>
     <func>
-      <name>Module:encode(R, Version) -> T</name>
+      <name since="">Module:encode(R, Version) -> T</name>
       <fsummary>Encode (compress) a megaco component.</fsummary>
       <type>
         <v>R = megaco_message() | transaction() | action_reply() | action_request() | command_request()</v>
@@ -53,7 +53,7 @@
       </desc>
     </func>
     <func>
-      <name>Module:decode(T, Version) -> R</name>
+      <name since="">Module:decode(T, Version) -> R</name>
       <fsummary>Decode (decompress) a megaco component.</fsummary>
       <type>
         <v>T = term()</v>
diff --git a/lib/megaco/doc/src/megaco_encoder.xml b/lib/megaco/doc/src/megaco_encoder.xml
index 13c6ed324b..cc8270440b 100644
--- a/lib/megaco/doc/src/megaco_encoder.xml
+++ b/lib/megaco/doc/src/megaco_encoder.xml
@@ -32,7 +32,7 @@
     <rev>%VSN%</rev>
     <file>megaco_encoder.xml</file>
   </header>
-  <module>megaco_encoder</module>
+  <module since="">megaco_encoder</module>
   <modulesummary>Megaco encoder behaviour.</modulesummary>
   <description>
     <p>The following functions should be exported from a 
@@ -64,7 +64,7 @@ action_reply() = #'ActionReply'{}
 
   <funcs>
     <func>
-      <name>Module:encode_message(EncodingConfig, Version, Message) -> {ok, Bin} | Error</name>
+      <name since="">Module:encode_message(EncodingConfig, Version, Message) -> {ok, Bin} | Error</name>
       <fsummary>Encode a megaco message.</fsummary>
       <type>
         <v>EncodingConfig = list()</v>
@@ -81,7 +81,7 @@ action_reply() = #'ActionReply'{}
     </func>
 
     <func>
-      <name>Module:decode_message(EncodingConfig, Version, Bin) -> {ok, Message} | Error</name>
+      <name since="">Module:decode_message(EncodingConfig, Version, Bin) -> {ok, Message} | Error</name>
       <fsummary>Decode a megaco message.</fsummary>
       <type>
         <v>EncodingConfig = list()</v>
@@ -104,7 +104,7 @@ action_reply() = #'ActionReply'{}
     </func>
 
     <func>
-      <name>Module:decode_mini_message(EncodingConfig, Version, Bin) -> {ok, Message} | Error</name>
+      <name since="">Module:decode_mini_message(EncodingConfig, Version, Bin) -> {ok, Message} | Error</name>
       <fsummary>Perform a minimal decode of a megaco message.</fsummary>
       <type>
         <v>EncodingConfig = list()</v>
@@ -129,7 +129,7 @@ action_reply() = #'ActionReply'{}
     </func>
 
     <func>
-      <name>Module:encode_transaction(EncodingConfig, Version, Transaction) -> OK | Error</name>
+      <name since="">Module:encode_transaction(EncodingConfig, Version, Transaction) -> OK | Error</name>
       <fsummary>Encode a megaco transaction.</fsummary>
       <type>
         <v>EncodingConfig = list()</v>
@@ -155,7 +155,7 @@ action_reply() = #'ActionReply'{}
     </func>
 
     <func>
-      <name>Module:encode_action_requests(EncodingConfig, Version, ARs) -> OK | Error</name>
+      <name since="">Module:encode_action_requests(EncodingConfig, Version, ARs) -> OK | Error</name>
       <fsummary>Encode megaco action requests.</fsummary>
       <type>
         <v>EncodingConfig = list()</v>
@@ -181,7 +181,7 @@ action_reply() = #'ActionReply'{}
     </func>
 
     <func>
-      <name>Module:encode_action_reply(EncodingConfig, Version, AR) -> OK | Error</name>
+      <name since="">Module:encode_action_reply(EncodingConfig, Version, AR) -> OK | Error</name>
       <fsummary>Encode a megaco action reply.</fsummary>
       <type>
         <v>EncodingConfig = list()</v>
diff --git a/lib/megaco/doc/src/megaco_flex_scanner.xml b/lib/megaco/doc/src/megaco_flex_scanner.xml
index 0856f3f429..121a7fbcff 100644
--- a/lib/megaco/doc/src/megaco_flex_scanner.xml
+++ b/lib/megaco/doc/src/megaco_flex_scanner.xml
@@ -32,7 +32,7 @@
     <rev>%VSN%</rev>
     <file>megaco_flex_scanner.xml</file>
   </header>
-  <module>megaco_flex_scanner</module>
+  <module since="">megaco_flex_scanner</module>
   <modulesummary>Interface module to the flex scanner linked in driver.</modulesummary>
   <description>
     <p>This module contains the public interface to the flex scanner 
@@ -72,7 +72,7 @@ megaco_version() = integer() >= 1
 
   <funcs>
     <func>
-      <name>start() -> {ok, PortOrPorts} | {error, Reason}</name>
+      <name since="">start() -> {ok, PortOrPorts} | {error, Reason}</name>
       <fsummary></fsummary>
       <type>
         <v>PortOrPorts = megaco_ports()</v>
@@ -94,7 +94,7 @@ megaco_version() = integer() >= 1
     </func>
 
     <func>
-      <name>stop(PortOrPorts) -> stopped</name>
+      <name since="">stop(PortOrPorts) -> stopped</name>
       <fsummary></fsummary>
       <type>
         <v>PortOrPorts = megaco_ports()</v>
@@ -108,7 +108,7 @@ megaco_version() = integer() >= 1
     </func>
 
     <func>
-      <name>is_reentrant_enabled() -> Boolean</name>
+      <name since="">is_reentrant_enabled() -> Boolean</name>
       <fsummary></fsummary>
       <type>
         <v>Boolean = boolean()</v>
@@ -121,7 +121,7 @@ megaco_version() = integer() >= 1
     </func>
 
     <func>
-      <name>is_scanner_port(Port, PortOrPorts) -> Boolean</name>
+      <name since="">is_scanner_port(Port, PortOrPorts) -> Boolean</name>
       <fsummary></fsummary>
       <type>
         <v>Port = port()</v>
@@ -137,7 +137,7 @@ megaco_version() = integer() >= 1
     </func>
 
     <func>
-      <name>scan(Binary, PortOrPorts) -> {ok, Tokens, Version, LatestLine} | {error, Reason, LatestLine} </name>
+      <name since="">scan(Binary, PortOrPorts) -> {ok, Tokens, Version, LatestLine} | {error, Reason, LatestLine} </name>
       <fsummary></fsummary>
       <type>
         <v>Binary = binary()</v>
diff --git a/lib/megaco/doc/src/megaco_tcp.xml b/lib/megaco/doc/src/megaco_tcp.xml
index 77aee32f6c..63713b2c56 100644
--- a/lib/megaco/doc/src/megaco_tcp.xml
+++ b/lib/megaco/doc/src/megaco_tcp.xml
@@ -32,7 +32,7 @@
     <rev>%VSN%</rev>
     <file>megaco_tcp.xml</file>
   </header>
-  <module>megaco_tcp</module>
+  <module since="">megaco_tcp</module>
   <modulesummary>Interface module to TPKT transport protocol for Megaco/H.248.</modulesummary>
   <description>
     <p>This module contains the public interface to the TPKT (TCP/IP) version
@@ -40,7 +40,7 @@
   </description>
   <funcs>
     <func>
-      <name>start_transport() -> {ok, TransportRef}</name>
+      <name since="">start_transport() -> {ok, TransportRef}</name>
       <fsummary></fsummary>
       <type>
         <v>TransportRef = pid()</v>
@@ -51,7 +51,7 @@
       </desc>
     </func>
     <func>
-      <name>listen(TransportRef, ListenPortSpecList) -> ok</name>
+      <name since="">listen(TransportRef, ListenPortSpecList) -> ok</name>
       <fsummary></fsummary>
       <type>
         <v>TransportRef = pid() | regname()</v>
@@ -65,7 +65,7 @@
       </desc>
     </func>
     <func>
-      <name>connect(TransportRef, OptionList) -> {ok, Handle, ControlPid} |  {error, Reason}</name>
+      <name since="">connect(TransportRef, OptionList) -> {ok, Handle, ControlPid} |  {error, Reason}</name>
       <fsummary></fsummary>
       <type>
         <v>TransportRef = pid() | regname()</v>
@@ -86,7 +86,7 @@
       </desc>
     </func>
     <func>
-      <name>close(Handle) -> ok</name>
+      <name since="">close(Handle) -> ok</name>
       <fsummary></fsummary>
       <type>
         <v>Handle = socket_handle()</v>
@@ -96,7 +96,7 @@
       </desc>
     </func>
     <func>
-      <name>socket(Handle) -> Socket</name>
+      <name since="">socket(Handle) -> Socket</name>
       <fsummary></fsummary>
       <type>
         <v>Handle = socket_handle()</v>
@@ -109,7 +109,7 @@
       </desc>
     </func>
     <func>
-      <name>send_message(Handle, Message) -> ok</name>
+      <name since="">send_message(Handle, Message) -> ok</name>
       <fsummary></fsummary>
       <type>
         <v>Handle = socket_handle()</v>
@@ -120,7 +120,7 @@
       </desc>
     </func>
     <func>
-      <name>block(Handle) -> ok</name>
+      <name since="">block(Handle) -> ok</name>
       <fsummary></fsummary>
       <type>
         <v>Handle = socket_handle()</v>
@@ -130,7 +130,7 @@
       </desc>
     </func>
     <func>
-      <name>unblock(Handle) -> ok</name>
+      <name since="">unblock(Handle) -> ok</name>
       <fsummary></fsummary>
       <type>
         <v>Handle = socket_handle()</v>
@@ -141,7 +141,7 @@
       </desc>
     </func>
     <func>
-      <name>upgrade_receive_handle(ControlPid) -> ok</name>
+      <name since="">upgrade_receive_handle(ControlPid) -> ok</name>
       <fsummary></fsummary>
       <type>
         <v>ControlPid = pid()</v>
@@ -153,9 +153,9 @@
       </desc>
     </func>
     <func>
-      <name>get_stats() -> {ok, TotalStats} | {error, Reason}</name>
-      <name>get_stats(SendHandle) -> {ok, SendHandleStats} | {error, Reason}</name>
-      <name>get_stats(SendHandle, Counter) -> {ok, CounterStats} | {error, Reason}</name>
+      <name since="">get_stats() -> {ok, TotalStats} | {error, Reason}</name>
+      <name since="">get_stats(SendHandle) -> {ok, SendHandleStats} | {error, Reason}</name>
+      <name since="">get_stats(SendHandle, Counter) -> {ok, CounterStats} | {error, Reason}</name>
       <fsummary></fsummary>
       <type>
         <v>TotalStats = [send_handle_stats()]</v>
@@ -173,8 +173,8 @@
       </desc>
     </func>
     <func>
-      <name>reset_stats() -> void()</name>
-      <name>reset_stats(SendHandle) -> void()</name>
+      <name since="">reset_stats() -> void()</name>
+      <name since="">reset_stats(SendHandle) -> void()</name>
       <fsummary></fsummary>
       <type>
         <v>SendHandle = send_handle()</v>
diff --git a/lib/megaco/doc/src/megaco_transport.xml b/lib/megaco/doc/src/megaco_transport.xml
index 3002e9b74e..ba8c794750 100644
--- a/lib/megaco/doc/src/megaco_transport.xml
+++ b/lib/megaco/doc/src/megaco_transport.xml
@@ -32,7 +32,7 @@
     <rev>%VSN%</rev>
     <file>megaco_transport.xml</file>
   </header>
-  <module>megaco_transport</module>
+  <module since="">megaco_transport</module>
   <modulesummary>Megaco transport behaviour.</modulesummary>
   <description>
     <p>The following functions should be exported from a 
@@ -54,8 +54,8 @@
   </description>
   <funcs>
     <func>
-      <name>Module:send_message(Handle, Msg) -> ok | {cancel, Reason} | Error</name>
-      <name>Module:send_message(Handle, Msg, Resend) -> ok | {cancel, Reason} | Error</name>
+      <name since="">Module:send_message(Handle, Msg) -> ok | {cancel, Reason} | Error</name>
+      <name since="">Module:send_message(Handle, Msg, Resend) -> ok | {cancel, Reason} | Error</name>
       <fsummary>Send a megaco message.</fsummary>
       <type>
         <v>Handle = term()</v>
@@ -99,7 +99,7 @@
     </func>
 
     <func>
-      <name>Module:resend_message(Handle, Msg) -> ok | {cancel, Reason} | Error</name>
+      <name since="">Module:resend_message(Handle, Msg) -> ok | {cancel, Reason} | Error</name>
       <fsummary>Re-send a megaco message.</fsummary>
       <type>
         <v>Handle = term()</v>
diff --git a/lib/megaco/doc/src/megaco_udp.xml b/lib/megaco/doc/src/megaco_udp.xml
index b2559c77d5..3d776c19b6 100644
--- a/lib/megaco/doc/src/megaco_udp.xml
+++ b/lib/megaco/doc/src/megaco_udp.xml
@@ -32,7 +32,7 @@
     <rev>%VSN%</rev>
     <file>megaco_udp.xml</file>
   </header>
-  <module>megaco_udp</module>
+  <module since="">megaco_udp</module>
   <modulesummary>Interface module to UDP transport protocol for Megaco/H.248.</modulesummary>
   <description>
     <p>This module contains the public interface to the UDP/IP version
@@ -40,7 +40,7 @@
   </description>
   <funcs>
     <func>
-      <name>start_transport() -> {ok, TransportRef}</name>
+      <name since="">start_transport() -> {ok, TransportRef}</name>
       <fsummary></fsummary>
       <type>
         <v>TransportRef = pid()</v>
@@ -51,7 +51,7 @@
       </desc>
     </func>
     <func>
-      <name>open(TransportRef, OptionList) ->  {ok, Handle, ControlPid} |  {error, Reason}</name>
+      <name since="">open(TransportRef, OptionList) ->  {ok, Handle, ControlPid} |  {error, Reason}</name>
       <fsummary></fsummary>
       <type>
         <v>TransportRef = pid() | regname()</v>
@@ -73,7 +73,7 @@
       </desc>
     </func>
     <func>
-      <name>close(Handle, Msg) -> ok</name>
+      <name since="">close(Handle, Msg) -> ok</name>
       <fsummary></fsummary>
       <type>
         <v>Handle = socket_handle()</v>
@@ -84,7 +84,7 @@
       </desc>
     </func>
     <func>
-      <name>socket(Handle) -> Socket</name>
+      <name since="">socket(Handle) -> Socket</name>
       <fsummary></fsummary>
       <type>
         <v>Handle = socket_handle()</v>
@@ -97,7 +97,7 @@
       </desc>
     </func>
     <func>
-      <name>create_send_handle(Handle, Host, Port) -> send_handle()</name>
+      <name since="">create_send_handle(Handle, Host, Port) -> send_handle()</name>
       <fsummary></fsummary>
       <type>
         <v>Handle = socket_handle()</v>
@@ -110,7 +110,7 @@
       </desc>
     </func>
     <func>
-      <name>send_message(SendHandle, Msg) -> ok</name>
+      <name since="">send_message(SendHandle, Msg) -> ok</name>
       <fsummary></fsummary>
       <type>
         <v>SendHandle = send_handle()</v>
@@ -125,7 +125,7 @@
       </desc>
     </func>
     <func>
-      <name>block(Handle) -> ok</name>
+      <name since="">block(Handle) -> ok</name>
       <fsummary></fsummary>
       <type>
         <v>Handle = socket_handle()</v>
@@ -135,7 +135,7 @@
       </desc>
     </func>
     <func>
-      <name>unblock(Handle) -> ok</name>
+      <name since="">unblock(Handle) -> ok</name>
       <fsummary></fsummary>
       <type>
         <v>Handle = socket_handle()</v>
@@ -146,7 +146,7 @@
       </desc>
     </func>
     <func>
-      <name>upgrade_receive_handle(ControlPid, NewHandle) -> ok</name>
+      <name since="">upgrade_receive_handle(ControlPid, NewHandle) -> ok</name>
       <fsummary></fsummary>
       <type>
         <v>ControlPid = pid()</v>
@@ -160,9 +160,9 @@
       </desc>
     </func>
     <func>
-      <name>get_stats() -> {ok, TotalStats} | {error, Reason}</name>
-      <name>get_stats(SendHandle) -> {ok, SendHandleStats} | {error, Reason}</name>
-      <name>get_stats(SendHandle, Counter) -> {ok, CounterStats} | {error, Reason}</name>
+      <name since="">get_stats() -> {ok, TotalStats} | {error, Reason}</name>
+      <name since="">get_stats(SendHandle) -> {ok, SendHandleStats} | {error, Reason}</name>
+      <name since="">get_stats(SendHandle, Counter) -> {ok, CounterStats} | {error, Reason}</name>
       <fsummary></fsummary>
       <type>
         <v>TotalStats = [total_stats()]</v>
@@ -180,8 +180,8 @@
       </desc>
     </func>
     <func>
-      <name>reset_stats() -> void()</name>
-      <name>reset_stats(SendHandle) -> void()</name>
+      <name since="">reset_stats() -> void()</name>
+      <name since="">reset_stats(SendHandle) -> void()</name>
       <fsummary></fsummary>
       <type>
         <v>SendHandle = send_handle()</v>
diff --git a/lib/megaco/doc/src/megaco_user.xml b/lib/megaco/doc/src/megaco_user.xml
index 067be15fe0..198f2aa24c 100644
--- a/lib/megaco/doc/src/megaco_user.xml
+++ b/lib/megaco/doc/src/megaco_user.xml
@@ -32,7 +32,7 @@
     <rev>%VSN%</rev>
     <file>megaco_user.xml</file>
   </header>
-  <module>megaco_user</module>
+  <module since="">megaco_user</module>
   <modulesummary>Callback module for users of the Megaco application</modulesummary>
   <description>
     <p>This module defines the callback behaviour of Megaco users.  A
@@ -164,8 +164,8 @@ protocol_version() = integer()    ]]></code>
 
   <funcs>
     <func>
-      <name>handle_connect(ConnHandle, ProtocolVersion) -> ok | error | {error,ErrorDescr}</name>
-      <name>handle_connect(ConnHandle, ProtocolVersion, Extra]) -> ok | error | {error,ErrorDescr}</name>
+      <name since="">handle_connect(ConnHandle, ProtocolVersion) -> ok | error | {error,ErrorDescr}</name>
+      <name since="">handle_connect(ConnHandle, ProtocolVersion, Extra]) -> ok | error | {error,ErrorDescr}</name>
       <fsummary>Invoked when a new connection is established</fsummary>
       <type>
         <v>ConnHandle      = conn_handle()</v>
@@ -202,7 +202,7 @@ protocol_version() = integer()    ]]></code>
     </func>
 
     <func>
-      <name>handle_disconnect(ConnHandle, ProtocolVersion, Reason) -> ok</name>
+      <name since="">handle_disconnect(ConnHandle, ProtocolVersion, Reason) -> ok</name>
       <fsummary>Invoked when a connection is teared down</fsummary>
       <type>
         <v>ConnHandle      = conn_handle()</v>
@@ -220,8 +220,8 @@ protocol_version() = integer()    ]]></code>
     </func>
 
     <func>
-      <name>handle_syntax_error(ReceiveHandle, ProtocolVersion, DefaultED) -> reply | {reply, ED} | no_reply | {no_reply, ED} </name>
-      <name>handle_syntax_error(ReceiveHandle, ProtocolVersion, DefaultED, Extra) -> reply | {reply, ED} | no_reply | {no_reply, ED} </name>
+      <name since="">handle_syntax_error(ReceiveHandle, ProtocolVersion, DefaultED) -> reply | {reply, ED} | no_reply | {no_reply, ED} </name>
+      <name since="">handle_syntax_error(ReceiveHandle, ProtocolVersion, DefaultED, Extra) -> reply | {reply, ED} | no_reply | {no_reply, ED} </name>
       <fsummary>Invoked when a received message had syntax errors</fsummary>
       <type>
         <v>ReceiveHandle    = receive_handle()</v>
@@ -258,8 +258,8 @@ protocol_version() = integer()    ]]></code>
     </func>
 
     <func>
-      <name>handle_message_error(ConnHandle, ProtocolVersion, ErrorDescr) -> ok</name>
-      <name>handle_message_error(ConnHandle, ProtocolVersion, ErrorDescr, Extra) -> ok</name>
+      <name since="">handle_message_error(ConnHandle, ProtocolVersion, ErrorDescr) -> ok</name>
+      <name since="">handle_message_error(ConnHandle, ProtocolVersion, ErrorDescr, Extra) -> ok</name>
       <fsummary>Invoked when a received message just contains an error</fsummary>
       <type>
         <v>ConnHandle      = conn_handle()</v>
@@ -291,8 +291,8 @@ protocol_version() = integer()    ]]></code>
 
 <!--
     <func>
-      <name>handle_segment_error(ConnHandle, ProtocolVersion, TransId, SegmentError) -> ok</name>
-      <name>handle_segment_error(ConnHandle, ProtocolVersion, TransId, SegmentError, Extra) -> ok</name>
+      <name since="">handle_segment_error(ConnHandle, ProtocolVersion, TransId, SegmentError) -> ok</name>
+      <name since="">handle_segment_error(ConnHandle, ProtocolVersion, TransId, SegmentError, Extra) -> ok</name>
       <fsummary>Invoked when a segment error has been detected</fsummary>
       <type>
         <v>ConnHandle      = conn_handle()</v>
@@ -316,8 +316,8 @@ protocol_version() = integer()    ]]></code>
 -->
 
     <func>
-      <name>handle_trans_request(ConnHandle, ProtocolVersion, ActionRequests) -> pending() | reply() | ignore_trans_request</name>
-      <name>handle_trans_request(ConnHandle, ProtocolVersion, ActionRequests, Extra) -> pending() | reply() | ignore_trans_request</name>
+      <name since="">handle_trans_request(ConnHandle, ProtocolVersion, ActionRequests) -> pending() | reply() | ignore_trans_request</name>
+      <name since="">handle_trans_request(ConnHandle, ProtocolVersion, ActionRequests, Extra) -> pending() | reply() | ignore_trans_request</name>
       <fsummary>Invoked for each transaction request</fsummary>
       <type>
         <v>ConnHandle      = conn_handle()</v>
@@ -420,8 +420,8 @@ protocol_version() = integer()    ]]></code>
     </func>
 
     <func>
-      <name>handle_trans_long_request(ConnHandle, ProtocolVersion, ReqData) -> reply()</name>
-      <name>handle_trans_long_request(ConnHandle, ProtocolVersion, ReqData, Extra) -> reply()</name>
+      <name since="">handle_trans_long_request(ConnHandle, ProtocolVersion, ReqData) -> reply()</name>
+      <name since="">handle_trans_long_request(ConnHandle, ProtocolVersion, ReqData, Extra) -> reply()</name>
       <fsummary>Optionally invoked for a time consuming transaction request</fsummary>
       <type>
         <v>ConnHandle      = conn_handle()</v>
@@ -460,8 +460,8 @@ protocol_version() = integer()    ]]></code>
     </func>
 
     <func>
-      <name>handle_trans_reply(ConnHandle, ProtocolVersion, UserReply, ReplyData) -> ok</name>
-      <name>handle_trans_reply(ConnHandle, ProtocolVersion, UserReply, ReplyData, Extra) -> ok</name>
+      <name since="">handle_trans_reply(ConnHandle, ProtocolVersion, UserReply, ReplyData) -> ok</name>
+      <name since="">handle_trans_reply(ConnHandle, ProtocolVersion, UserReply, ReplyData, Extra) -> ok</name>
       <fsummary>Optionally invoked for a transaction reply</fsummary>
       <type>
         <v>ConnHandle      = conn_handle()</v>
@@ -593,8 +593,8 @@ protocol_version() = integer()    ]]></code>
     </func>
 
     <func>
-      <name>handle_trans_ack(ConnHandle, ProtocolVersion, AckStatus, AckData) -> ok</name>
-      <name>handle_trans_ack(ConnHandle, ProtocolVersion, AckStatus, AckData, Extra) -> ok</name>
+      <name since="">handle_trans_ack(ConnHandle, ProtocolVersion, AckStatus, AckData) -> ok</name>
+      <name since="">handle_trans_ack(ConnHandle, ProtocolVersion, AckStatus, AckData, Extra) -> ok</name>
       <fsummary>Optionally invoked for a transaction acknowledgement</fsummary>
       <type>
         <v>ConnHandle      = conn_handle()</v>
@@ -658,8 +658,8 @@ protocol_version() = integer()    ]]></code>
     </func>
 
     <func>
-      <name>handle_unexpected_trans(ConnHandle, ProtocolVersion, Trans) -> ok</name>
-      <name>handle_unexpected_trans(ConnHandle, ProtocolVersion, Trans, Extra) -> ok</name>
+      <name since="">handle_unexpected_trans(ConnHandle, ProtocolVersion, Trans) -> ok</name>
+      <name since="">handle_unexpected_trans(ConnHandle, ProtocolVersion, Trans, Extra) -> ok</name>
       <fsummary>Invoked when an unexpected message is received</fsummary>
       <type>
         <v>ConnHandle      = conn_handle()</v>
@@ -685,8 +685,8 @@ protocol_version() = integer()    ]]></code>
     </func>
 
     <func>
-      <name>handle_trans_request_abort(ConnHandle, ProtocolVersion, TransNo, Pid) -> ok</name>
-      <name>handle_trans_request_abort(ConnHandle, ProtocolVersion, TransNo, Pid, Extra) -> ok</name>
+      <name since="">handle_trans_request_abort(ConnHandle, ProtocolVersion, TransNo, Pid) -> ok</name>
+      <name since="">handle_trans_request_abort(ConnHandle, ProtocolVersion, TransNo, Pid, Extra) -> ok</name>
       <fsummary>Invoked when an transaction request has been aborted</fsummary>
       <type>
         <v>ConnHandle      = conn_handle()</v>
@@ -710,8 +710,8 @@ protocol_version() = integer()    ]]></code>
     </func>
 
     <func>
-      <name>handle_segment_reply(ConnHandle, ProtocolVersion, TransNo, SegNo, SegCompl) -> ok</name>
-      <name>handle_segment_reply(ConnHandle, ProtocolVersion, TransNo, SegNo, SegCompl, Extra) -> ok</name>
+      <name since="">handle_segment_reply(ConnHandle, ProtocolVersion, TransNo, SegNo, SegCompl) -> ok</name>
+      <name since="">handle_segment_reply(ConnHandle, ProtocolVersion, TransNo, SegNo, SegCompl, Extra) -> ok</name>
       <fsummary>Segment Reply Indication</fsummary>
       <type>
         <v>ConnHandle      = conn_handle()</v>
diff --git a/lib/megaco/src/flex/Makefile.in b/lib/megaco/src/flex/Makefile.in
index c37ad4d702..26d2ddd44c 100644
--- a/lib/megaco/src/flex/Makefile.in
+++ b/lib/megaco/src/flex/Makefile.in
@@ -31,25 +31,6 @@ include ../../vsn.mk
 VSN=$(MEGACO_VSN)
 
 # ----------------------------------------------------
-# Dynamic Erlang Driver
-# ----------------------------------------------------
-HAVE_USABLE_OTP_DED_MK = @HAVE_USABLE_OTP_DED_MK@
-
-ifeq ($(HAVE_USABLE_OTP_DED_MK),yes)
-# otp_ded.mk will be used on R13B04 and later
-include $(ERL_TOP)/make/$(TARGET)/otp_ded.mk
-else
-# megacos configure provide the info instead
-DED_CC				= @CC@
-DED__NOWARN_NOTHR_CFLAGS	= @DED_CFLAGS@
-DED_THR_DEFS			= @DED_THR_DEFS@
-DED_LD				= @DED_LD@
-DED_LDFLAGS			= @DED_LDFLAGS@
-DED_INCLUDES			= @DED_INCLUDES@
-DED_EXT				= so
-endif
-
-# ----------------------------------------------------
 # The following variables differ on different systems, we set
 # reasonable defaults, if something different is needed it should
 # be set for that system only.
@@ -57,20 +38,19 @@ endif
 
 FLEX_VSN = $(shell flex --version)
 
-TMP_CFLAGS  = $(DED__NOWARN_NOTHR_CFLAGS) @OTP_EXTRA_FLAGS@
+TMP_CFLAGS  = @DED_BASIC_CFLAGS@ @OTP_EXTRA_FLAGS@
 ifeq ($(TYPE),valgrind)
 CFLAGS = $(subst -O2, , $(TMP_CFLAGS)) -DVALGRIND
 else
 CFLAGS = $(TMP_CFLAGS)
 endif
-CC      = $(DED_CC)
-CFLAGS_MT = $(CFLAGS) $(DED_THR_DEFS)
-LD      = $(DED_LD)
-LDFLAGS = $(DED_LDFLAGS)
+CC      = @DED_CC@
+CFLAGS_MT = $(CFLAGS) @DED_THR_DEFS@
+LD      = @DED_LD@
+LDFLAGS = @DED_LDFLAGS@
 LEX     = @LEX@
 LEXLIB  = @LEXLIB@
 PERL    = @PERL@
-ERLANG_OSTYPE = @ERLANG_OSTYPE@
 
 # Shall we build the flex scanner or not.
 # We assume that it does not exist on windows...
@@ -143,8 +123,8 @@ ifeq ($(findstring win32,$(TARGET)), win32)
 FLEX_SCANNER_SO = 
 SOLIBS = $(FLEX_SCANNER_SO)
 else
-FLEX_SCANNER_SO = $(LIBDIR)/$(STD_DRV).$(DED_EXT) 
-FLEX_SCANNER_MT_SO = $(LIBDIR)/$(MT_DRV).$(DED_EXT) 
+FLEX_SCANNER_SO = $(LIBDIR)/$(STD_DRV).@DED_EXT@ 
+FLEX_SCANNER_MT_SO = $(LIBDIR)/$(MT_DRV).@DED_EXT@ 
 SOLIBS = $(FLEX_SCANNER_SO) $(FLEX_SCANNER_MT_SO) 
 endif
 
@@ -179,7 +159,7 @@ else
 CFLAGS += -DMFS_FLEX_DEBUG=0
 endif
 
-CFLAGS += $(DED_INCLUDES) -I$(ERL_TOP)/erts/$(TARGET) $(DRV_FLAGS) -funroll-loops -Wall
+CFLAGS += @DED_INCLUDE@ -I$(ERL_TOP)/erts/$(TARGET) $(DRV_FLAGS) -funroll-loops -Wall
 
 #ifneq ($(FLEX_VSN),)
 #CFLAGS += -DFLEX_VERSION="$(FLEX_VSN)"
@@ -398,10 +378,10 @@ $(OBJDIR)/$(MT_DRV).o: $(MT_DRV).c
 
 # No need to link with -lfl as we have also defined %option noyywrap - 
 # and having -lfl doesn't work under Darwin for some reason. - Sean
-$(LIBDIR)/$(STD_DRV).$(DED_EXT): $(OBJDIR)/$(STD_DRV).o
+$(LIBDIR)/$(STD_DRV).@DED_EXT@: $(OBJDIR)/$(STD_DRV).o
 	$(V_colon)@echo "linking std driver:"
 	$(V_LD) $(LDFLAGS) -o $@ $<
 
-$(LIBDIR)/$(MT_DRV).$(DED_EXT): $(OBJDIR)/$(MT_DRV).o
+$(LIBDIR)/$(MT_DRV).@DED_EXT@: $(OBJDIR)/$(MT_DRV).o
 	$(V_colon)@echo "linking multi-threaded driver:"
 	$(V_LD) $(LDFLAGS) -o $@ $<
diff --git a/lib/mnesia/doc/src/mnesia.xml b/lib/mnesia/doc/src/mnesia.xml
index 621b6047ee..11b0b8e987 100644
--- a/lib/mnesia/doc/src/mnesia.xml
+++ b/lib/mnesia/doc/src/mnesia.xml
@@ -32,7 +32,7 @@
     <rev></rev>
     <file></file>
   </header>
-  <module>mnesia</module>
+  <module since="">mnesia</module>
   <modulesummary>A distributed telecommunications DBMS</modulesummary>
   <description>
 
@@ -183,7 +183,7 @@
 
   <funcs>
     <func>
-      <name>abort(Reason) -> transaction abort</name>
+      <name since="">abort(Reason) -> transaction abort</name>
       <fsummary>Terminates the current transaction.</fsummary>
       <desc>
         <p>Makes the transaction silently
@@ -195,7 +195,7 @@
       </desc>
     </func>
     <func>
-      <name>activate_checkpoint(Args) -> {ok,Name,Nodes} | {error,Reason}</name>
+      <name since="">activate_checkpoint(Args) -> {ok,Name,Nodes} | {error,Reason}</name>
       <fsummary>Activates a checkpoint.</fsummary>
       <desc>
       <marker id="activate_checkpoint"></marker>
@@ -259,7 +259,7 @@
       </desc>
     </func>
     <func>
-      <name>activity(AccessContext, Fun [, Args]) -> ResultOfFun | exit(Reason)</name>
+      <name since="">activity(AccessContext, Fun [, Args]) -> ResultOfFun | exit(Reason)</name>
       <fsummary>Executes <c>Fun</c> in <c>AccessContext</c>.</fsummary>
       <desc>
       <marker id="activity_2_3"></marker>
@@ -271,7 +271,7 @@
       </desc>
     </func>
     <func>
-      <name>activity(AccessContext, Fun, Args, AccessMod) -> ResultOfFun | exit(Reason)</name>
+      <name since="">activity(AccessContext, Fun, Args, AccessMod) -> ResultOfFun | exit(Reason)</name>
       <fsummary>Executes <c>Fun</c> in <c>AccessContext</c>.</fsummary>
       <desc>
       <marker id="activity_4"></marker>
@@ -403,7 +403,7 @@
       </desc>
     </func>
     <func>
-      <name>add_table_copy(Tab, Node, Type) -> {aborted, R} | {atomic, ok}</name>
+      <name since="">add_table_copy(Tab, Node, Type) -> {aborted, R} | {atomic, ok}</name>
       <fsummary>Copies a table to a remote node.</fsummary>
       <desc>
       <marker id="add_table_copy"></marker>
@@ -420,7 +420,7 @@ mnesia:add_table_copy(person, Node, disc_copies)</code>
       </desc>
     </func>
     <func>
-      <name>add_table_index(Tab, AttrName) -> {aborted, R} | {atomic, ok}</name>
+      <name since="">add_table_index(Tab, AttrName) -> {aborted, R} | {atomic, ok}</name>
       <fsummary>Creates an index for a table.</fsummary>
       <desc>
       <marker id="add_table_index"></marker>
@@ -441,7 +441,7 @@ mnesia:add_table_index(person, age)</code>
       </desc>
     </func>
     <func>
-      <name>all_keys(Tab) -> KeyList | transaction abort</name>
+      <name since="">all_keys(Tab) -> KeyList | transaction abort</name>
       <fsummary>Returns all keys in a table.</fsummary>
       <desc>
       <marker id="all_keys"></marker>
@@ -453,7 +453,7 @@ mnesia:add_table_index(person, age)</code>
       </desc>
     </func>
     <func>
-      <name>async_dirty(Fun, [, Args]) -> ResultOfFun | exit(Reason)</name>
+      <name since="">async_dirty(Fun, [, Args]) -> ResultOfFun | exit(Reason)</name>
       <fsummary>Calls the <c>Fun</c> in a context that is not protected by a transaction.</fsummary>
       <desc>
       <marker id="async_dirty"></marker>
@@ -493,7 +493,7 @@ mnesia:add_table_index(person, age)</code>
       </desc>
     </func>
     <func>
-      <name>backup(Opaque [, BackupMod]) -> ok | {error,Reason}</name>
+      <name since="">backup(Opaque [, BackupMod]) -> ok | {error,Reason}</name>
       <fsummary>Backs up all tables in the database.</fsummary>
       <desc>
       <marker id="backup"></marker>
@@ -505,7 +505,7 @@ mnesia:add_table_index(person, age)</code>
       </desc>
     </func>
     <func>
-      <name>backup_checkpoint(Name, Opaque [, BackupMod]) -> ok | {error,Reason}</name>
+      <name since="">backup_checkpoint(Name, Opaque [, BackupMod]) -> ok | {error,Reason}</name>
       <fsummary>Backs up all tables in a checkpoint.</fsummary>
       <desc>
       <marker id="backup_checkpoint"></marker>
@@ -520,7 +520,7 @@ mnesia:add_table_index(person, age)</code>
       </desc>
     </func>
     <func>
-      <name>change_config(Config, Value) -> {error, Reason} | {ok, ReturnValue}</name>
+      <name since="">change_config(Config, Value) -> {error, Reason} | {ok, ReturnValue}</name>
       <fsummary>Changes a configuration parameter.</fsummary>
       <desc>
       <marker id="change_config"></marker>
@@ -554,7 +554,7 @@ mnesia:add_table_index(person, age)</code>
       </desc>
     </func>
     <func>
-      <name>change_table_access_mode(Tab, AccessMode) -> {aborted, R} | {atomic, ok}</name>
+      <name since="">change_table_access_mode(Tab, AccessMode) -> {aborted, R} | {atomic, ok}</name>
       <fsummary>Changes the access mode for the table.</fsummary>
       <desc>
       <marker id="change_table_access_mode"></marker>
@@ -568,7 +568,7 @@ mnesia:add_table_index(person, age)</code>
       </desc>
     </func>
     <func>
-      <name>change_table_copy_type(Tab, Node, To) -> {aborted, R} | {atomic, ok}</name>
+      <name since="">change_table_copy_type(Tab, Node, To) -> {aborted, R} | {atomic, ok}</name>
       <fsummary>Changes the storage type of a table.</fsummary>
       <desc>
       <marker id="change_table_copy_type"></marker>
@@ -585,7 +585,7 @@ mnesia:change_table_copy_type(person, node(), disc_copies)</code>
       </desc>
     </func>
     <func>
-      <name>change_table_load_order(Tab, LoadOrder) -> {aborted, R} | {atomic, ok}</name>
+      <name since="">change_table_load_order(Tab, LoadOrder) -> {aborted, R} | {atomic, ok}</name>
       <fsummary>Changes the load order priority for the table.</fsummary>
       <desc>
       <marker id="change_table_load_order"></marker>
@@ -595,7 +595,7 @@ mnesia:change_table_copy_type(person, node(), disc_copies)</code>
       </desc>
     </func>
     <func>
-      <name>change_table_majority(Tab, Majority) -> {aborted, R} | {atomic, ok}</name>
+      <name since="OTP R14B03">change_table_majority(Tab, Majority) -> {aborted, R} | {atomic, ok}</name>
       <fsummary>Changes the majority check setting for the table.</fsummary>
       <desc>
         <p><c>Majority</c> must be a boolean. Default is <c>false</c>.
@@ -607,7 +607,7 @@ mnesia:change_table_copy_type(person, node(), disc_copies)</code>
       </desc>
     </func>
     <func>
-      <name>clear_table(Tab) -> {aborted, R} | {atomic, ok}</name>
+      <name since="">clear_table(Tab) -> {aborted, R} | {atomic, ok}</name>
       <fsummary>Deletes all entries in a table.</fsummary>
       <desc>
       <marker id="clear_table"></marker>
@@ -615,7 +615,7 @@ mnesia:change_table_copy_type(person, node(), disc_copies)</code>
       </desc>
     </func>
     <func>
-      <name>create_schema(DiscNodes) -> ok | {error,Reason}</name>
+      <name since="">create_schema(DiscNodes) -> ok | {error,Reason}</name>
       <fsummary>Creates a new schema on the specified nodes.</fsummary>
       <desc>
       <marker id="create_schema"></marker>
@@ -637,7 +637,7 @@ mnesia:change_table_copy_type(person, node(), disc_copies)</code>
       </desc>
     </func>
     <func>
-      <name>create_table(Name, TabDef) -> {atomic, ok} | {aborted, Reason}</name>
+      <name since="">create_table(Name, TabDef) -> {atomic, ok} | {aborted, Reason}</name>
       <fsummary>Creates a Mnesia table called <c>Name</c>with properties as described by argument <c>TabDef</c>.</fsummary>
       <desc>
       <marker id="create_table"></marker>
@@ -799,7 +799,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>deactivate_checkpoint(Name) -> ok | {error, Reason}</name>
+      <name since="">deactivate_checkpoint(Name) -> ok | {error, Reason}</name>
       <fsummary>Deactivates a checkpoint.</fsummary>
       <desc>
       <marker id="deactivate_checkpoint"></marker>
@@ -811,7 +811,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>del_table_copy(Tab, Node) -> {aborted, R} | {atomic, ok}</name>
+      <name since="">del_table_copy(Tab, Node) -> {aborted, R} | {atomic, ok}</name>
       <fsummary>Deletes the replica of table <c>Tab</c> at node <c>Node</c>.</fsummary>
       <desc>
       <marker id="del_table_copy"></marker>
@@ -825,7 +825,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>del_table_index(Tab, AttrName) -> {aborted, R} | {atomic, ok}</name>
+      <name since="">del_table_index(Tab, AttrName) -> {aborted, R} | {atomic, ok}</name>
       <fsummary>Deletes an index in a table.</fsummary>
       <desc>
       <marker id="del_table_index"></marker>
@@ -834,7 +834,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>delete({Tab, Key}) -> transaction abort | ok</name>
+      <name since="">delete({Tab, Key}) -> transaction abort | ok</name>
       <fsummary>Deletes all records in table <c>Tab</c> with the key <c>Key</c>.</fsummary>
       <desc>
       <marker id="delete_2"></marker>
@@ -842,7 +842,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>delete(Tab, Key, LockKind) -> transaction abort | ok</name>
+      <name since="">delete(Tab, Key, LockKind) -> transaction abort | ok</name>
       <fsummary>Deletes all records in table <c>Tab</c>with the key <c>Key</c>.</fsummary>
       <desc>
       <marker id="delete_3"></marker>
@@ -857,7 +857,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>delete_object(Record) -> transaction abort | ok</name>
+      <name since="">delete_object(Record) -> transaction abort | ok</name>
       <fsummary>Delete a record.</fsummary>
       <desc>
       <marker id="delete_object_1"></marker>
@@ -866,7 +866,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>delete_object(Tab, Record, LockKind) -> transaction abort | ok</name>
+      <name since="">delete_object(Tab, Record, LockKind) -> transaction abort | ok</name>
       <fsummary>Deletes a record.</fsummary>
       <desc>
       <marker id="delete_object_3"></marker>
@@ -883,7 +883,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>delete_schema(DiscNodes) -> ok | {error,Reason}</name>
+      <name since="">delete_schema(DiscNodes) -> ok | {error,Reason}</name>
       <fsummary>Deletes the schema on the given nodes.</fsummary>
       <desc>
       <marker id="delete_schema"></marker>
@@ -904,7 +904,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>delete_table(Tab) -> {aborted, Reason} | {atomic, ok}</name>
+      <name since="">delete_table(Tab) -> {aborted, Reason} | {atomic, ok}</name>
       <fsummary>Deletes permanently all replicas of table <c>Tab</c>.</fsummary>
       <desc>
       <marker id="delete_table"></marker>
@@ -912,7 +912,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>dirty_all_keys(Tab) -> KeyList | exit({aborted, Reason})</name>
+      <name since="">dirty_all_keys(Tab) -> KeyList | exit({aborted, Reason})</name>
       <fsummary>Dirty search for all record keys in table.</fsummary>
       <desc>
       <marker id="delete_all_keys"></marker>
@@ -920,7 +920,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>dirty_delete({Tab, Key}) -> ok | exit({aborted, Reason})</name>
+      <name since="">dirty_delete({Tab, Key}) -> ok | exit({aborted, Reason})</name>
       <fsummary>Dirty delete of a record.</fsummary>
       <desc>
       <marker id="dirty_delete"></marker>
@@ -928,14 +928,14 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>dirty_delete(Tab, Key) -> ok | exit({aborted, Reason})</name>
+      <name since="">dirty_delete(Tab, Key) -> ok | exit({aborted, Reason})</name>
       <fsummary>Dirty delete of a record.</fsummary>
       <desc>
         <p>Dirty equivalent of the function <c>mnesia:delete/3</c>.</p>
       </desc>
     </func>
     <func>
-      <name>dirty_delete_object(Record)</name>
+      <name since="">dirty_delete_object(Record)</name>
       <fsummary>Dirty delete of a record.</fsummary>
       <desc>
       <marker id="dirty_delete_object_1"></marker>
@@ -944,14 +944,14 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>dirty_delete_object(Tab, Record)</name>
+      <name since="">dirty_delete_object(Tab, Record)</name>
       <fsummary>Dirty delete of a record.</fsummary>
       <desc>
         <p>Dirty equivalent of the function <c>mnesia:delete_object/3</c>.</p>
       </desc>
     </func>
     <func>
-      <name>dirty_first(Tab) ->  Key | exit({aborted, Reason})</name>
+      <name since="">dirty_first(Tab) ->  Key | exit({aborted, Reason})</name>
       <fsummary>Returns the key for the first record in a table.</fsummary>
       <desc>
       <marker id="dirty_first"></marker>
@@ -967,7 +967,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>dirty_index_match_object(Pattern, Pos)</name>
+      <name since="">dirty_index_match_object(Pattern, Pos)</name>
       <fsummary>Dirty pattern match using index.</fsummary>
       <desc>
       <marker id="dirty_index_match_object_2"></marker>
@@ -977,7 +977,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>dirty_index_match_object(Tab, Pattern, Pos)</name>
+      <name since="">dirty_index_match_object(Tab, Pattern, Pos)</name>
       <fsummary>Dirty pattern match using index.</fsummary>
       <desc>
         <p>Dirty equivalent of the function
@@ -985,7 +985,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>dirty_index_read(Tab, SecondaryKey, Pos)</name>
+      <name since="">dirty_index_read(Tab, SecondaryKey, Pos)</name>
       <fsummary>Dirty read using index.</fsummary>
       <desc>
       <marker id="dirty_index_read"></marker>
@@ -994,7 +994,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>dirty_last(Tab) -> Key | exit({aborted, Reason})</name>
+      <name since="">dirty_last(Tab) -> Key | exit({aborted, Reason})</name>
       <fsummary>Returns the key for the last record in a table.</fsummary>
       <desc>
       <marker id="dirty_last"></marker>
@@ -1006,7 +1006,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>dirty_match_object(Pattern) -> RecordList | exit({aborted, Reason})</name>
+      <name since="">dirty_match_object(Pattern) -> RecordList | exit({aborted, Reason})</name>
       <fsummary>Dirty pattern match pattern.</fsummary>
       <desc>
       <marker id="dirty_match_object_1"></marker>
@@ -1015,7 +1015,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>dirty_match_object(Tab, Pattern) -> RecordList | exit({aborted, Reason})</name>
+      <name since="">dirty_match_object(Tab, Pattern) -> RecordList | exit({aborted, Reason})</name>
       <fsummary>Dirty pattern match pattern.</fsummary>
       <desc>
         <p>Dirty equivalent of the function
@@ -1023,7 +1023,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>dirty_next(Tab, Key) -> Key | exit({aborted, Reason})</name>
+      <name since="">dirty_next(Tab, Key) -> Key | exit({aborted, Reason})</name>
       <fsummary>Return the next key in a table.</fsummary>
       <desc>
       <marker id="dirty_next"></marker>
@@ -1038,7 +1038,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>dirty_prev(Tab, Key) -> Key | exit({aborted, Reason})</name>
+      <name since="">dirty_prev(Tab, Key) -> Key | exit({aborted, Reason})</name>
       <fsummary>Returns the previous key in a table.</fsummary>
       <desc>
       <marker id="dirty_prev"></marker>
@@ -1050,7 +1050,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>dirty_read({Tab, Key}) -> ValueList | exit({aborted, Reason}</name>
+      <name since="">dirty_read({Tab, Key}) -> ValueList | exit({aborted, Reason}</name>
       <fsummary>Dirty read of records.</fsummary>
       <desc>
       <marker id="dirty_read"></marker>
@@ -1058,14 +1058,14 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>dirty_read(Tab, Key) -> ValueList | exit({aborted, Reason}</name>
+      <name since="">dirty_read(Tab, Key) -> ValueList | exit({aborted, Reason}</name>
       <fsummary>Dirty read of records.</fsummary>
       <desc>
         <p>Dirty equivalent of the function <c>mnesia:read/3</c>.</p>
       </desc>
     </func>
     <func>
-      <name>dirty_select(Tab, MatchSpec) -> ValueList | exit({aborted, Reason}</name>
+      <name since="">dirty_select(Tab, MatchSpec) -> ValueList | exit({aborted, Reason}</name>
       <fsummary>Dirty matches the objects in <c>Tab</c> against <c>MatchSpec</c>.</fsummary>
       <desc>
       <marker id="dirty_select"></marker>
@@ -1073,7 +1073,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>dirty_slot(Tab, Slot) -> RecordList | exit({aborted, Reason})</name>
+      <name since="">dirty_slot(Tab, Slot) -> RecordList | exit({aborted, Reason})</name>
       <fsummary>Returns the list of records that are associated with <c>Slot</c> in a table.</fsummary>
       <desc>
       <marker id="dirty_slot"></marker>
@@ -1089,7 +1089,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>dirty_update_counter({Tab, Key}, Incr) -> NewVal | exit({aborted, Reason})</name>
+      <name since="">dirty_update_counter({Tab, Key}, Incr) -> NewVal | exit({aborted, Reason})</name>
       <fsummary>Dirty update of a counter record.</fsummary>
       <desc>
       <marker id="dirty_update_counter"></marker>
@@ -1097,7 +1097,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>dirty_update_counter(Tab, Key, Incr) -> NewVal | exit({aborted, Reason})</name>
+      <name since="">dirty_update_counter(Tab, Key, Incr) -> NewVal | exit({aborted, Reason})</name>
       <fsummary>Dirty update of a counter record.</fsummary>
       <desc>
         <p>Mnesia has no special counter records. However,
@@ -1126,7 +1126,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>dirty_write(Record) -> ok | exit({aborted, Reason})</name>
+      <name since="">dirty_write(Record) -> ok | exit({aborted, Reason})</name>
       <fsummary>Dirty write of a record.</fsummary>
       <desc>
       <marker id="dirty_write_1"></marker>
@@ -1135,14 +1135,14 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>dirty_write(Tab, Record) -> ok | exit({aborted, Reason})</name>
+      <name since="">dirty_write(Tab, Record) -> ok | exit({aborted, Reason})</name>
       <fsummary>Dirty write of a record.</fsummary>
       <desc>
         <p>Dirty equivalent of the function <c>mnesia:write/3</c>.</p>
       </desc>
     </func>
     <func>
-      <name>dump_log() -> dumped</name>
+      <name since="">dump_log() -> dumped</name>
       <fsummary>Performs a user-initiated dump of the local log file.</fsummary>
       <desc>
       <marker id="dump_log"></marker>
@@ -1156,7 +1156,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>dump_tables(TabList) -> {atomic, ok} | {aborted, Reason}</name>
+      <name since="">dump_tables(TabList) -> {atomic, ok} | {aborted, Reason}</name>
       <fsummary>Dumps all RAM tables to disc.</fsummary>
       <desc>
       <marker id="dump_tables"></marker>
@@ -1168,7 +1168,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>dump_to_textfile(Filename)</name>
+      <name since="">dump_to_textfile(Filename)</name>
       <fsummary>Dumps local tables into a text file.</fsummary>
       <desc>
       <marker id="dump_to_textfile"></marker>
@@ -1181,7 +1181,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>error_description(Error) -> String</name>
+      <name since="">error_description(Error) -> String</name>
       <fsummary>Returns a string describing a particular Mnesia error.</fsummary>
       <desc>
       <marker id="error_description"></marker>
@@ -1259,7 +1259,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>ets(Fun, [, Args]) -> ResultOfFun | exit(Reason)</name>
+      <name since="">ets(Fun, [, Args]) -> ResultOfFun | exit(Reason)</name>
       <fsummary>Calls the <c>Fun</c> in a raw context that is not protected by a transaction.</fsummary>
       <desc>
       <marker id="ets"></marker>
@@ -1278,7 +1278,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>first(Tab) ->  Key | transaction abort</name>
+      <name since="">first(Tab) ->  Key | transaction abort</name>
       <fsummary>Returns the key for the first record in a table.</fsummary>
       <desc>
       <marker id="first"></marker>
@@ -1293,7 +1293,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>foldl(Function, Acc, Table) -> NewAcc | transaction abort</name>
+      <name since="">foldl(Function, Acc, Table) -> NewAcc | transaction abort</name>
       <fsummary>Calls <c>Function</c> for each record in <c>Table</c>.</fsummary>
       <desc>
       <marker id="foldl"></marker>
@@ -1306,7 +1306,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>foldr(Function, Acc, Table) -> NewAcc | transaction abort</name>
+      <name since="">foldr(Function, Acc, Table) -> NewAcc | transaction abort</name>
       <fsummary>Calls <c>Function</c> for each record in <c>Table</c>.</fsummary>
       <desc>
       <marker id="foldr"></marker>
@@ -1317,7 +1317,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>force_load_table(Tab) -> yes | ErrorDescription</name>
+      <name since="">force_load_table(Tab) -> yes | ErrorDescription</name>
       <fsummary>Forces a table to be loaded into the system.</fsummary>
       <desc>
       <marker id="force_load_table"></marker>
@@ -1335,7 +1335,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>index_match_object(Pattern, Pos) -> transaction abort | ObjList</name>
+      <name since="">index_match_object(Pattern, Pos) -> transaction abort | ObjList</name>
       <fsummary>Matches records and uses index information.</fsummary>
       <desc>
       <marker id="index_match_object_2"></marker>
@@ -1345,7 +1345,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>index_match_object(Tab, Pattern, Pos, LockKind) -> transaction abort | ObjList</name>
+      <name since="">index_match_object(Tab, Pattern, Pos, LockKind) -> transaction abort | ObjList</name>
       <fsummary>Matches records and uses index information.</fsummary>
       <desc>
       <marker id="index_match_object_4"></marker>
@@ -1377,7 +1377,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>index_read(Tab, SecondaryKey, Pos) -> transaction abort | RecordList</name>
+      <name since="">index_read(Tab, SecondaryKey, Pos) -> transaction abort | RecordList</name>
       <fsummary>Reads records through index table.</fsummary>
       <desc>
       <marker id="index_read"></marker>
@@ -1397,7 +1397,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>info() -> ok</name>
+      <name since="">info() -> ok</name>
       <fsummary>Prints system information on the terminal.</fsummary>
       <desc>
       <marker id="info"></marker>
@@ -1408,7 +1408,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>install_fallback(Opaque) -> ok | {error,Reason}</name>
+      <name since="">install_fallback(Opaque) -> ok | {error,Reason}</name>
       <fsummary>Installs a backup as fallback.</fsummary>
       <desc>
       <marker id="install_fallback_1"></marker>
@@ -1417,7 +1417,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>install_fallback(Opaque), BackupMod) -> ok | {error,Reason}</name>
+      <name since="">install_fallback(Opaque), BackupMod) -> ok | {error,Reason}</name>
       <fsummary>Installs a backup as fallback.</fsummary>
       <desc>
         <p>Calls <c>mnesia:install_fallback(Opaque, Args)</c>, where
@@ -1425,7 +1425,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>install_fallback(Opaque, Args) -> ok | {error,Reason}</name>
+      <name since="">install_fallback(Opaque, Args) -> ok | {error,Reason}</name>
       <fsummary>Installs a backup as fallback.</fsummary>
       <desc>
         <p>Installs a backup as fallback. The fallback is used to
@@ -1483,7 +1483,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>is_transaction() -> boolean</name>
+      <name since="">is_transaction() -> boolean</name>
       <fsummary>Checks if code is running in a transaction.</fsummary>
       <desc>
       <marker id="is_transaction"></marker>
@@ -1492,7 +1492,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>last(Tab) -> Key | transaction abort</name>
+      <name since="">last(Tab) -> Key | transaction abort</name>
       <fsummary>Returns the key for the last record in a table.</fsummary>
       <desc>
         <p>Works exactly like
@@ -1503,7 +1503,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>load_textfile(Filename)</name>
+      <name since="">load_textfile(Filename)</name>
       <fsummary>Loads tables from a text file.</fsummary>
       <desc>
       <marker id="load_textfile"></marker>
@@ -1516,7 +1516,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>lock(LockItem, LockKind) -> Nodes | ok | transaction abort</name>
+      <name since="">lock(LockItem, LockKind) -> Nodes | ok | transaction abort</name>
       <fsummary>Explicit grab lock.</fsummary>
       <desc>
       <marker id="lock"></marker>
@@ -1605,7 +1605,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>match_object(Pattern) -> transaction abort | RecList</name>
+      <name since="">match_object(Pattern) -> transaction abort | RecList</name>
       <fsummary>Matches <c>Pattern</c> for records.</fsummary>
       <desc>
       <marker id="match_object_1"></marker>
@@ -1614,7 +1614,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>match_object(Tab, Pattern, LockKind) -> transaction abort | RecList</name>
+      <name since="">match_object(Tab, Pattern, LockKind) -> transaction abort | RecList</name>
       <fsummary>Matches <c>Pattern</c> for records.</fsummary>
       <desc>
       <marker id="match_object_3"></marker>
@@ -1639,7 +1639,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>move_table_copy(Tab, From, To) -> {aborted, Reason} | {atomic, ok}</name>
+      <name since="">move_table_copy(Tab, From, To) -> {aborted, Reason} | {atomic, ok}</name>
       <fsummary>Moves the copy of table <c>Tab</c> from node <c>From</c> to node <c>To</c>.</fsummary>
       <desc>
       <marker id="move_table_copy"></marker>
@@ -1653,7 +1653,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>next(Tab, Key) -> Key | transaction abort</name>
+      <name since="">next(Tab, Key) -> Key | transaction abort</name>
       <fsummary>Returns the next key in a table.</fsummary>
       <desc>
       <marker id="next"></marker>
@@ -1665,7 +1665,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>prev(Tab, Key) -> Key | transaction abort</name>
+      <name since="">prev(Tab, Key) -> Key | transaction abort</name>
       <fsummary>Returns the previous key in a table.</fsummary>
       <desc>
         <p>Works exactly like
@@ -1676,7 +1676,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>read({Tab, Key}) -> transaction abort | RecordList</name>
+      <name since="">read({Tab, Key}) -> transaction abort | RecordList</name>
       <fsummary>Reads records(s) with a given key.</fsummary>
       <desc>
       <marker id="read_2"></marker>
@@ -1684,14 +1684,14 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>read(Tab, Key) -> transaction abort | RecordList</name>
+      <name since="">read(Tab, Key) -> transaction abort | RecordList</name>
       <fsummary>Reads records(s) with a given key.</fsummary>
       <desc>
         <p>Calls function <c>mnesia:read(Tab, Key, read)</c>.</p>
       </desc>
     </func>
     <func>
-      <name>read(Tab, Key, LockKind) -> transaction abort | RecordList</name>
+      <name since="">read(Tab, Key, LockKind) -> transaction abort | RecordList</name>
       <fsummary>Reads records(s) with a given key.</fsummary>
       <desc>
       <marker id="read_3"></marker>
@@ -1716,7 +1716,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>read_lock_table(Tab) -> ok | transaction abort</name>
+      <name since="">read_lock_table(Tab) -> ok | transaction abort</name>
       <fsummary>Sets a read lock on an entire table.</fsummary>
       <desc>
       <marker id="read_lock_table"></marker>
@@ -1725,7 +1725,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>report_event(Event) -> ok</name>
+      <name since="">report_event(Event) -> ok</name>
       <fsummary>Reports a user event to the Mnesia event handler.</fsummary>
       <desc>
       <marker id="report_event"></marker>
@@ -1743,7 +1743,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>restore(Opaque, Args) -> {atomic, RestoredTabs} |{aborted, Reason}</name>
+      <name since="">restore(Opaque, Args) -> {atomic, RestoredTabs} |{aborted, Reason}</name>
       <fsummary>Online restore of backup.</fsummary>
       <desc>
       <marker id="restore"></marker>
@@ -1803,7 +1803,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>s_delete({Tab, Key}) -> ok | transaction abort</name>
+      <name since="">s_delete({Tab, Key}) -> ok | transaction abort</name>
       <fsummary>Sets sticky lock and delete records.</fsummary>
       <desc>
       <marker id="s_delete"></marker>
@@ -1812,7 +1812,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>s_delete_object(Record) -> ok | transaction abort</name>
+      <name since="">s_delete_object(Record) -> ok | transaction abort</name>
       <fsummary>Sets sticky lock and delete record.</fsummary>
       <desc>
       <marker id="s_delete_object"></marker>
@@ -1822,7 +1822,7 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>s_write(Record) -> ok | transaction abort</name>
+      <name since="">s_write(Record) -> ok | transaction abort</name>
       <fsummary>Writes <c>Record</c> and sets sticky lock.</fsummary>
       <desc>
       <marker id="s_write"></marker>
@@ -1832,21 +1832,21 @@ mnesia:create_table(person,
       </desc>
     </func>
     <func>
-      <name>schema() -> ok</name>
+      <name since="">schema() -> ok</name>
       <fsummary>Prints information about all table definitions on the terminal.</fsummary>
       <desc>
         <p>Prints information about all table definitions on the terminal.</p>
       </desc>
     </func>
     <func>
-      <name>schema(Tab) -> ok</name>
+      <name since="">schema(Tab) -> ok</name>
       <fsummary>Prints information about one table definition on the terminal.</fsummary>
       <desc>
         <p>Prints information about one table definition on the terminal.</p>
       </desc>
     </func>
     <func>
-      <name>select(Tab, MatchSpec [, Lock]) -> transaction abort | [Object]</name>
+      <name since="">select(Tab, MatchSpec [, Lock]) -> transaction abort | [Object]</name>
       <fsummary>Matches the objects in <c>Tab</c> against <c>MatchSpec</c>.</fsummary>
       <desc>
       <marker id="select_2_3"></marker>
@@ -1884,7 +1884,7 @@ mnesia:select(Tab,[{MatchHead, [Guard], [Result]}]),</code>
       </desc>
     </func>
     <func>
-      <name>select(Tab, MatchSpec, NObjects, Lock) -> transaction abort | {[Object],Cont} | '$end_of_table'</name>
+      <name since="">select(Tab, MatchSpec, NObjects, Lock) -> transaction abort | {[Object],Cont} | '$end_of_table'</name>
       <fsummary>Matches the objects in <c>Tab</c> against <c>MatchSpec</c>.</fsummary>
       <desc>
       <marker id="select_4"></marker>
@@ -1907,7 +1907,7 @@ mnesia:select(Tab,[{MatchHead, [Guard], [Result]}]),</code>
       </desc>
     </func>
     <func>
-      <name>select(Cont) -> transaction abort | {[Object],Cont} | '$end_of_table'</name>
+      <name since="">select(Cont) -> transaction abort | {[Object],Cont} | '$end_of_table'</name>
       <fsummary>Continues selecting objects.</fsummary>
       <desc>
         <p>Selects more objects with the match specification initiated
@@ -1919,7 +1919,7 @@ mnesia:select(Tab,[{MatchHead, [Guard], [Result]}]),</code>
       </desc>
     </func>
     <func>
-      <name>set_debug_level(Level) -> OldLevel</name>
+      <name since="">set_debug_level(Level) -> OldLevel</name>
       <fsummary>Changes the internal debug level of Mnesia.</fsummary>
       <desc>
       <marker id="set_debug_level"></marker>
@@ -1930,7 +1930,7 @@ mnesia:select(Tab,[{MatchHead, [Guard], [Result]}]),</code>
       </desc>
     </func>
     <func>
-      <name>set_master_nodes(MasterNodes) -> ok | {error, Reason}</name>
+      <name since="">set_master_nodes(MasterNodes) -> ok | {error, Reason}</name>
       <fsummary>Sets the master nodes for all tables.</fsummary>
       <desc>
       <marker id="set_master_nodes_1"></marker>
@@ -1943,7 +1943,7 @@ mnesia:select(Tab,[{MatchHead, [Guard], [Result]}]),</code>
       </desc>
     </func>
     <func>
-      <name>set_master_nodes(Tab, MasterNodes) -> ok | {error, Reason}</name>
+      <name since="">set_master_nodes(Tab, MasterNodes) -> ok | {error, Reason}</name>
       <fsummary>Sets the master nodes for a table.</fsummary>
       <desc>
       <marker id="set_master_nodes_2"></marker>
@@ -1968,14 +1968,14 @@ mnesia:select(Tab,[{MatchHead, [Guard], [Result]}]),</code>
       </desc>
     </func>
     <func>
-      <name>snmp_close_table(Tab) -> {aborted, R} | {atomic, ok}</name>
+      <name since="">snmp_close_table(Tab) -> {aborted, R} | {atomic, ok}</name>
       <fsummary>Removes the possibility for SNMP to manipulate the table.</fsummary>
       <desc>
         <p>Removes the possibility for SNMP to manipulate the table.</p>
       </desc>
     </func>
     <func>
-      <name>snmp_get_mnesia_key(Tab, RowIndex) -> {ok, Key} | undefined</name>
+      <name since="">snmp_get_mnesia_key(Tab, RowIndex) -> {ok, Key} | undefined</name>
       <fsummary>Gets the corresponding Mnesia key from an SNMP index.</fsummary>
       <type>
         <v>Tab ::= atom()</v>
@@ -1990,7 +1990,7 @@ mnesia:select(Tab,[{MatchHead, [Guard], [Result]}]),</code>
       </desc>
     </func>
     <func>
-      <name>snmp_get_next_index(Tab, RowIndex) -> {ok, NextIndex} | endOfTable</name>
+      <name since="">snmp_get_next_index(Tab, RowIndex) -> {ok, NextIndex} | endOfTable</name>
       <fsummary>Gets the index of the next lexicographical row.</fsummary>
       <type>
         <v>Tab ::= atom()</v>
@@ -2006,7 +2006,7 @@ mnesia:select(Tab,[{MatchHead, [Guard], [Result]}]),</code>
       </desc>
     </func>
     <func>
-      <name>snmp_get_row(Tab, RowIndex) -> {ok, Row} | undefined</name>
+      <name since="">snmp_get_row(Tab, RowIndex) -> {ok, Row} | undefined</name>
       <fsummary>Retrieves a row indexed by an SNMP index.</fsummary>
       <type>
         <v>Tab ::= atom()</v>
@@ -2019,7 +2019,7 @@ mnesia:select(Tab,[{MatchHead, [Guard], [Result]}]),</code>
       </desc>
     </func>
     <func>
-      <name>snmp_open_table(Tab, SnmpStruct) -> {aborted, R} | {atomic, ok}</name>
+      <name since="">snmp_open_table(Tab, SnmpStruct) -> {aborted, R} | {atomic, ok}</name>
       <fsummary>Organizes a Mnesia table as an SNMP table.</fsummary>
       <type>
         <v>Tab ::= atom()</v>
@@ -2073,10 +2073,17 @@ mnesia:create_table(employee,
       </desc>
     </func>
     <func>
-      <name>start() -> ok | {error, Reason}</name>
+      <name since="">start() -> ok | {error, Reason}</name>
       <fsummary>Starts a local Mnesia system.</fsummary>
       <desc>
       <marker id="start"></marker>
+        <p>Mnesia startup is asynchronous. The function call
+	        <c>mnesia:start()</c> returns the atom <c>ok</c> and then
+          starts to initialize the different tables. Depending on the
+          size of the database, this can take some time, and the
+          application programmer must wait for the tables that the
+          application needs before they can be used. This is achieved
+          by using the function <c>mnesia:wait_for_tables/2</c>.</p>
         <p>The startup procedure for a set of Mnesia nodes is a
           fairly complicated operation. A Mnesia system consists
           of a set of nodes, with Mnesia started locally on all
@@ -2108,7 +2115,7 @@ mnesia:create_table(employee,
       </desc>
     </func>
     <func>
-      <name>stop() -> stopped</name>
+      <name since="">stop() -> stopped</name>
       <fsummary>Stops Mnesia locally.</fsummary>
       <desc>
       <marker id="stop"></marker>
@@ -2117,7 +2124,7 @@ mnesia:create_table(employee,
       </desc>
     </func>
     <func>
-      <name>subscribe(EventCategory) -> {ok, Node} | {error, Reason}</name>
+      <name since="">subscribe(EventCategory) -> {ok, Node} | {error, Reason}</name>
       <fsummary>Subscribes to events of type <c>EventCategory</c>.</fsummary>
       <desc>
       <marker id="subscribe"></marker>
@@ -2127,7 +2134,7 @@ mnesia:create_table(employee,
       </desc>
     </func>
     <func>
-      <name>sync_dirty(Fun, [, Args]) -> ResultOfFun | exit(Reason)</name>
+      <name since="">sync_dirty(Fun, [, Args]) -> ResultOfFun | exit(Reason)</name>
       <fsummary>Calls the <c>Fun</c> in a context that is not protected by a transaction.</fsummary>
       <desc>
       <marker id="sync_dirty"></marker>
@@ -2143,7 +2150,7 @@ mnesia:create_table(employee,
       </desc>
     </func>
     <func>
-      <name>sync_log() -> ok | {error, Reason}</name>
+      <name since="OTP 17.0">sync_log() -> ok | {error, Reason}</name>
       <fsummary>Performs a file sync of the local log file.</fsummary>
       <desc>
         <p>Ensures that the local transaction log file is synced to disk.
@@ -2153,7 +2160,7 @@ mnesia:create_table(employee,
       </desc>
     </func>
     <func>
-      <name>sync_transaction(Fun, [[, Args], Retries]) -> {aborted, Reason} | {atomic, ResultOfFun}</name>
+      <name since="">sync_transaction(Fun, [[, Args], Retries]) -> {aborted, Reason} | {atomic, ResultOfFun}</name>
       <fsummary>Synchronously executes a transaction.</fsummary>
       <desc>
       <marker id="sync_transaction"></marker>
@@ -2166,7 +2173,7 @@ mnesia:create_table(employee,
       </desc>
     </func>
     <func>
-      <name>system_info(InfoKey) -> Info | exit({aborted, Reason})</name>
+      <name since="">system_info(InfoKey) -> Info | exit({aborted, Reason})</name>
       <fsummary>Returns information about the Mnesia system.</fsummary>
       <desc>
       <marker id="system_info"></marker>
@@ -2353,7 +2360,7 @@ mnesia:create_table(employee,
       </desc>
     </func>
     <func>
-      <name>table(Tab [,[Option]]) -> QueryHandle</name>
+      <name since="">table(Tab [,[Option]]) -> QueryHandle</name>
       <fsummary>Return a QLC query handle.</fsummary>
       <desc>
       <marker id="table"></marker>
@@ -2408,7 +2415,7 @@ mnesia:create_table(employee,
       </desc>
     </func>
     <func>
-      <name>table_info(Tab, InfoKey) -> Info | exit({aborted, Reason})</name>
+      <name since="">table_info(Tab, InfoKey) -> Info | exit({aborted, Reason})</name>
       <fsummary>Returns local information about table.</fsummary>
       <desc>
       <marker id="table_info"></marker>
@@ -2560,7 +2567,7 @@ mnesia:create_table(employee,
       </desc>
     </func>
     <func>
-      <name>transaction(Fun [[, Args], Retries]) -> {aborted, Reason} | {atomic, ResultOfFun}</name>
+      <name since="">transaction(Fun [[, Args], Retries]) -> {aborted, Reason} | {atomic, ResultOfFun}</name>
       <fsummary>Executes a transaction.</fsummary>
       <desc>
       <marker id="transaction"></marker>
@@ -2628,7 +2635,7 @@ raise(Name, Amount) ->
       </desc>
     </func>
     <func>
-      <name>transform_table(Tab, Fun, NewAttributeList, NewRecordName) -> {aborted, R} | {atomic, ok}</name>
+      <name since="">transform_table(Tab, Fun, NewAttributeList, NewRecordName) -> {aborted, R} | {atomic, ok}</name>
       <fsummary>Changes format on all records in table <c>Tab</c>.</fsummary>
       <desc>
       <marker id="transform_table_4"></marker>
@@ -2649,7 +2656,7 @@ raise(Name, Amount) ->
       </desc>
     </func>
     <func>
-      <name>transform_table(Tab, Fun, NewAttributeList) -> {aborted, R} | {atomic, ok}</name>
+      <name since="">transform_table(Tab, Fun, NewAttributeList) -> {aborted, R} | {atomic, ok}</name>
       <fsummary>Changes format on all records in table <c>Tab</c>.</fsummary>
       <desc>
         <p>Calls <c>mnesia:transform_table(Tab, Fun,
@@ -2658,7 +2665,7 @@ raise(Name, Amount) ->
       </desc>
     </func>
     <func>
-      <name>traverse_backup(Source, [SourceMod,] Target, [TargetMod,] Fun, Acc) -> {ok, LastAcc} | {error, Reason}</name>
+      <name since="">traverse_backup(Source, [SourceMod,] Target, [TargetMod,] Fun, Acc) -> {ok, LastAcc} | {error, Reason}</name>
       <fsummary>Traversal of a backup.</fsummary>
       <desc>
       <marker id="traverse_backup"></marker>
@@ -2689,7 +2696,7 @@ raise(Name, Amount) ->
       </desc>
     </func>
     <func>
-      <name>uninstall_fallback() -> ok | {error,Reason}</name>
+      <name since="">uninstall_fallback() -> ok | {error,Reason}</name>
       <fsummary>Uninstalls a fallback.</fsummary>
       <desc>
       <marker id="uninstall_fallback_0"></marker>
@@ -2698,7 +2705,7 @@ raise(Name, Amount) ->
       </desc>
     </func>
     <func>
-      <name>uninstall_fallback(Args) -> ok | {error,Reason}</name>
+      <name since="">uninstall_fallback(Args) -> ok | {error,Reason}</name>
       <fsummary>Uninstalls a fallback.</fsummary>
       <desc>
         <p>Deinstalls a fallback before it
@@ -2725,7 +2732,7 @@ raise(Name, Amount) ->
       </desc>
     </func>
     <func>
-      <name>unsubscribe(EventCategory) -> {ok, Node} | {error, Reason}</name>
+      <name since="">unsubscribe(EventCategory) -> {ok, Node} | {error, Reason}</name>
       <fsummary>Subscribes to events of type <c>EventCategory</c>.</fsummary>
       <desc>
       <marker id="unsubscribe"></marker>
@@ -2735,7 +2742,7 @@ raise(Name, Amount) ->
       </desc>
     </func>
     <func>
-      <name>wait_for_tables(TabList, Timeout) -> ok | {timeout, BadTabList} | {error, Reason}</name>
+      <name since="">wait_for_tables(TabList, Timeout) -> ok | {timeout, BadTabList} | {error, Reason}</name>
       <fsummary>Waits for tables to be accessible.</fsummary>
       <desc>
       <marker id="wait_for_tables"></marker>
@@ -2746,7 +2753,7 @@ raise(Name, Amount) ->
       </desc>
     </func>
     <func>
-      <name>wread({Tab, Key}) -> transaction abort | RecordList</name>
+      <name since="">wread({Tab, Key}) -> transaction abort | RecordList</name>
       <fsummary>Reads records with given key.</fsummary>
       <desc>
       <marker id="wread"></marker>
@@ -2754,7 +2761,7 @@ raise(Name, Amount) ->
       </desc>
     </func>
     <func>
-      <name>write(Record) -> transaction abort | ok</name>
+      <name since="">write(Record) -> transaction abort | ok</name>
       <fsummary>Writes a record into the database.</fsummary>
       <desc>
       <marker id="write_1"></marker>
@@ -2763,7 +2770,7 @@ raise(Name, Amount) ->
       </desc>
     </func>
     <func>
-      <name>write(Tab, Record, LockKind) -> transaction abort | ok</name>
+      <name since="">write(Tab, Record, LockKind) -> transaction abort | ok</name>
       <fsummary>Writes a record into the database.</fsummary>
       <desc>
       <marker id="write_3"></marker>
@@ -2779,7 +2786,7 @@ raise(Name, Amount) ->
       </desc>
     </func>
     <func>
-      <name>write_lock_table(Tab) -> ok | transaction abort</name>
+      <name since="">write_lock_table(Tab) -> ok | transaction abort</name>
       <fsummary>Sets write lock on an entire table.</fsummary>
       <desc>
       <marker id="write_lock_table"></marker>
diff --git a/lib/mnesia/doc/src/mnesia_frag_hash.xml b/lib/mnesia/doc/src/mnesia_frag_hash.xml
index c233acdb05..ccaba412d0 100644
--- a/lib/mnesia/doc/src/mnesia_frag_hash.xml
+++ b/lib/mnesia/doc/src/mnesia_frag_hash.xml
@@ -34,7 +34,7 @@
     <rev>A</rev>
     <file>mnesia_frag_hash.sgml</file>
   </header>
-  <module>mnesia_frag_hash</module>
+  <module since="">mnesia_frag_hash</module>
   <modulesummary>Defines mnesia_frag_hash callback behavior</modulesummary>
   <description>
     <p>This module defines a callback behavior for user-defined hash
@@ -50,7 +50,7 @@
 
   <funcs>
     <func>
-      <name>init_state(Tab, State) -> NewState | abort(Reason)</name>
+      <name since="">init_state(Tab, State) -> NewState | abort(Reason)</name>
       <fsummary>Initiates the hash state for a new table.</fsummary>
       <type>
         <v>Tab = atom()</v>
@@ -72,7 +72,7 @@
       </desc>
     </func>
     <func>
-      <name>add_frag(State) -> {NewState, IterFrags, AdditionalLockFrags} | abort(Reason)</name>
+      <name since="">add_frag(State) -> {NewState, IterFrags, AdditionalLockFrags} | abort(Reason)</name>
       <fsummary>Starts when a new fragment is added to a fragmented table.</fsummary>
       <type>
         <v>State = term()</v>
@@ -100,7 +100,7 @@
       </desc>
     </func>
     <func>
-      <name>del_frag(State) ->  {NewState, IterFrags, AdditionalLockFrags} | abort(Reason)</name>
+      <name since="">del_frag(State) ->  {NewState, IterFrags, AdditionalLockFrags} | abort(Reason)</name>
       <fsummary>Starts when a fragment is deleted from a fragmented table.</fsummary>
       <type>
         <v>State = term()</v>
@@ -127,7 +127,7 @@
       </desc>
     </func>
     <func>
-      <name>key_to_frag_number(State, Key) -> FragNum | abort(Reason)</name>
+      <name since="">key_to_frag_number(State, Key) -> FragNum | abort(Reason)</name>
       <fsummary>Resolves the key of a record into a fragment number.</fsummary>
       <type>
         <v>FragNum = integer()</v>
@@ -140,7 +140,7 @@
       </desc>
     </func>
     <func>
-      <name>match_spec_to_frag_numbers(State, MatchSpec) -> FragNums | abort(Reason)</name>
+      <name since="">match_spec_to_frag_numbers(State, MatchSpec) -> FragNums | abort(Reason)</name>
       <fsummary>Resolves a <c>MatchSpec</c> into a list of fragment numbers.</fsummary>
       <type>
         <v>MatcSpec = ets_select_match_spec()</v>
diff --git a/lib/mnesia/doc/src/mnesia_registry.xml b/lib/mnesia/doc/src/mnesia_registry.xml
index a76f716981..18ddc4ab9e 100644
--- a/lib/mnesia/doc/src/mnesia_registry.xml
+++ b/lib/mnesia/doc/src/mnesia_registry.xml
@@ -34,7 +34,7 @@
     <rev>A</rev>
     <file>mnesia_registry.sgml</file>
   </header>
-  <module>mnesia_registry</module>
+  <module since="">mnesia_registry</module>
   <modulesummary>Dump support for registries in erl_interface.</modulesummary>
   <description>
     <p>This module is usually part of the <c>erl_interface</c>
@@ -57,7 +57,7 @@
 
   <funcs>
     <func>
-      <name>create_table(Tab) -> ok | exit(Reason)</name>
+      <name since="">create_table(Tab) -> ok | exit(Reason)</name>
       <fsummary>Creates a registry table in Mnesia.</fsummary>
       <desc>
         <p>A wrapper function for <c>mnesia:create_table/2</c>,
@@ -73,7 +73,7 @@
       </desc>
     </func>
     <func>
-      <name>create_table(Tab, TabDef) -> ok | exit(Reason)</name>
+      <name since="">create_table(Tab, TabDef) -> ok | exit(Reason)</name>
       <fsummary>Creates a customized registry table in Mnesia.</fsummary>
       <desc>
         <p>A wrapper function for <c>mnesia:create_table/2</c>,
diff --git a/lib/mnesia/doc/src/notes.xml b/lib/mnesia/doc/src/notes.xml
index 29c35d221c..01d1666b8d 100644
--- a/lib/mnesia/doc/src/notes.xml
+++ b/lib/mnesia/doc/src/notes.xml
@@ -39,7 +39,22 @@
     thus constitutes one section in this document. The title of each
     section is the version number of Mnesia.</p>
 
-  <section><title>Mnesia 4.15.5</title>
+  <section><title>Mnesia 4.15.6</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Avoid overload warnings caused by a race condition.</p>
+          <p>
+	    Own Id: OTP-15619 Aux Id: ERIERL-310 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>Mnesia 4.15.5</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
       <list>
@@ -737,7 +752,7 @@
           <p>
 	    Returns the same value for
 	    mnesia_loader:disc_load_table/2 as
-	    mnesia_loader:net_load_table/4 if a table copy can not be
+	    mnesia_loader:net_load_table/4 if a table copy cannot be
 	    found. (Thanks to Uwe Dauernheim)</p>
           <p>
 	    Own Id: OTP-10015</p>
diff --git a/lib/mnesia/examples/bench/README b/lib/mnesia/examples/bench/README
index 5d31b5ba25..b8209b19b8 100644
--- a/lib/mnesia/examples/bench/README
+++ b/lib/mnesia/examples/bench/README
@@ -46,7 +46,7 @@ you need to:
 
  - put the $ERL_TOP/bin directory in your path on all nodes
  - bind IP adresses to hostnames (e.g via DNS or /etc/hosts)
- - enable usage of rsh so it does not prompt for password
+ - enable usage of ssh so it does not prompt for password
 
 If you cannot achieve this, it is possible to run the benchmark
 anyway, but it requires more manual work to be done for each
@@ -141,7 +141,7 @@ statistics_detail
   following atoms: normal, debug and debug2. debug enables a
   finer grain of statistics to be reported, but since it requires
   more counters, to be updated by the generator processes it may
-  cause slightly worse benchmark performace figures than the brief
+  cause slightly worse benchmark performance figures than the brief
   default case, that is normal. debug2 prints out the debug info
   and formats it according to LMC's benchmark program.
 
@@ -160,7 +160,7 @@ n_fragments
 
   Defines how many fragments each table should be divided in.
   Default is 100. The fragments are evenly distributed over
-  all table nodes. The group table not devided in fragments.
+  all table nodes. The group table not divided in fragments.
 
 n_replicas
 
diff --git a/lib/mnesia/src/mnesia.erl b/lib/mnesia/src/mnesia.erl
index 223dba3f90..02bc884e36 100644
--- a/lib/mnesia/src/mnesia.erl
+++ b/lib/mnesia/src/mnesia.erl
@@ -160,7 +160,7 @@
                     {'sync_transaction', Retries::non_neg_integer()}.
 -type table() :: atom().
 -type storage_type() :: 'ram_copies' | 'disc_copies' | 'disc_only_copies'.
--type index_attr() :: atom() | non_neg_integer().
+-type index_attr() :: atom() | non_neg_integer() | {atom()}.
 -type write_locks() :: 'write' | 'sticky_write'.
 -type read_locks() :: 'read'.
 -type lock_kind() :: write_locks() | read_locks().
@@ -838,18 +838,20 @@ read(Tid, Ts, Tab, Key, LockKind)
 	tid ->
 	    Store = Ts#tidstore.store,
 	    Oid = {Tab, Key},
-	    Objs =
-		case LockKind of
-		    read ->
-			mnesia_locker:rlock(Tid, Store, Oid);
-		    write ->
-			mnesia_locker:rwlock(Tid, Store, Oid);
-		    sticky_write ->
-			mnesia_locker:sticky_rwlock(Tid, Store, Oid);
-		    _ ->
-			abort({bad_type, Tab, LockKind})
-		end,
-	    add_written(?ets_lookup(Store, Oid), Tab, Objs);
+	    ObjsFun =
+                fun() ->
+                        case LockKind of
+                            read ->
+                                mnesia_locker:rlock(Tid, Store, Oid);
+                            write ->
+                                mnesia_locker:rwlock(Tid, Store, Oid);
+                            sticky_write ->
+                                mnesia_locker:sticky_rwlock(Tid, Store, Oid);
+                            _ ->
+                                abort({bad_type, Tab, LockKind})
+                        end
+                end,
+	    add_written(?ets_lookup(Store, Oid), Tab, ObjsFun, LockKind);
 	_Protocol ->
 	    dirty_read(Tab, Key)
     end;
@@ -1202,14 +1204,20 @@ add_previous(_Tid, Ts, _Type, Tab) ->
 %% This routine fixes up the return value from read/1 so that
 %% it is correct with respect to what this particular transaction
 %% has already written, deleted .... etc
+%% The actual read from the table is not done if not needed due to local
+%% transaction context, and if so, no extra read lock is needed either.
 
-add_written([], _Tab, Objs) ->
-    Objs;  % standard normal fast case
-add_written(Written, Tab, Objs) ->
+add_written([], _Tab, ObjsFun, _LockKind) ->
+    ObjsFun();  % standard normal fast case
+add_written(Written, Tab, ObjsFun, LockKind) ->
     case val({Tab, setorbag}) of
 	bag ->
-	    add_written_to_bag(Written, Objs, []);
+	    add_written_to_bag(Written, ObjsFun(), []);
+        _ when LockKind == read;
+               LockKind == write ->
+	    add_written_to_set(Written);
 	_   ->
+            _ = ObjsFun(),  % Fall back to request new lock and read from source
 	    add_written_to_set(Written)
     end.
 
@@ -1269,6 +1277,14 @@ match_object(Tid, Ts, Tab, Pat, LockKind)
 match_object(_Tid, _Ts, Tab, Pat, _LockKind) ->
     abort({bad_type, Tab, Pat}).
 
+add_written_index(Store, Pos, Tab, Key, Objs) when is_integer(Pos) ->
+    Pat = setelement(Pos, val({Tab, wild_pattern}), Key),
+    add_written_match(Store, Pat, Tab, Objs);
+add_written_index(Store, Pos, Tab, Key, Objs) when is_tuple(Pos) ->
+    IxF = mnesia_index:index_vals_f(val({Tab, storage_type}), Tab, Pos),
+    Ops = find_ops(Store, Tab, '_'),
+    add_ix_match(Ops, Objs, IxF, Key, val({Tab, setorbag})).
+
 add_written_match(S, Pat, Tab, Objs) ->
     Ops = find_ops(S, Tab, Pat),
     FixedRes = add_match(Ops, Objs, val({Tab, setorbag})),
@@ -1295,6 +1311,46 @@ add_match([{_Oid, Val, write}|R], Objs, bag) ->
 add_match([{Oid, Val, write}|R], Objs, set) ->
     add_match(R, [Val | deloid(Oid,Objs)],set).
 
+add_ix_match([], Objs, _IxF, _Key, _Type) ->
+    Objs;
+add_ix_match(Written, Objs, IxF, Key, ordered_set) ->
+    %% Must use keysort which is stable
+    add_ordered_match(lists:keysort(1, ix_filter_ops(IxF, Key, Written)), Objs, []);
+add_ix_match([{Oid, _, delete}|R], Objs, IxF, Key, Type) ->
+    add_ix_match(R, deloid(Oid, Objs), IxF, Key, Type);
+add_ix_match([{_Oid, Val, delete_object}|R], Objs, IxF, Key, Type) ->
+    case ix_match(Val, IxF, Key) of
+        true ->
+            add_ix_match(R, lists:delete(Val, Objs), IxF, Key, Type);
+        false ->
+            add_ix_match(R, Objs, IxF, Key, Type)
+    end;
+add_ix_match([{_Oid, Val, write}|R], Objs, IxF, Key, bag) ->
+    case ix_match(Val, IxF, Key) of
+        true ->
+            add_ix_match(R, [Val | lists:delete(Val, Objs)], IxF, Key, bag);
+        false ->
+            add_ix_match(R, Objs, IxF, Key, bag)
+    end;
+add_ix_match([{Oid, Val, write}|R], Objs, IxF, Key, set) ->
+    case ix_match(Val, IxF, Key) of
+        true ->
+            add_ix_match(R, [Val | deloid(Oid,Objs)],IxF,Key,set);
+        false ->
+            add_ix_match(R, Objs, IxF, Key, set)
+    end.
+
+ix_match(Val, IxF, Key) ->
+    lists:member(Key, IxF(Val)).
+
+ix_filter_ops(IxF, Key, Ops) ->
+    lists:filter(
+      fun({_Oid, Obj, write}) ->
+              ix_match(Obj, IxF, Key);
+         (_) ->
+              true
+      end, Ops).
+
 %% For ordered_set only !!
 add_ordered_match(Written = [{{_, Key}, _, _}|_], [Obj|Objs], Acc)
   when Key > element(2, Obj) ->
@@ -1633,6 +1689,16 @@ index_match_object(Tid, Ts, Tab, Pat, Attr, LockKind)
 	    dirty_index_match_object(Tab, Pat, Attr); % Should be optimized?
 	tid ->
 	    case mnesia_schema:attr_tab_to_pos(Tab, Attr) of
+                {_} ->
+                    case LockKind of
+                        read ->
+			    Store = Ts#tidstore.store,
+			    mnesia_locker:rlock_table(Tid, Store, Tab),
+			    Objs = dirty_match_object(Tab, Pat),
+			    add_written_match(Store, Pat, Tab, Objs);
+                        _ ->
+                            abort({bad_type, Tab, LockKind})
+                    end;
 		Pos when Pos =< tuple_size(Pat) ->
 		    case LockKind of
 			read ->
@@ -1680,8 +1746,8 @@ index_read(Tid, Ts, Tab, Key, Attr, LockKind)
 			false ->
 			    Store = Ts#tidstore.store,
 			    Objs = mnesia_index:read(Tid, Store, Tab, Key, Pos),
-			    Pat = setelement(Pos, val({Tab, wild_pattern}), Key),
-			    add_written_match(Store, Pat, Tab, Objs);
+                            add_written_index(
+                              Ts#tidstore.store, Pos, Tab, Key, Objs);
 			true ->
 			    abort({bad_type, Tab, Attr, Key})
 		    end;
@@ -1817,7 +1883,7 @@ remote_dirty_match_object(Tab, Pat) ->
 	false ->
 	    mnesia_lib:db_match_object(Tab, Pat);
 	true ->
-	    PosList = val({Tab, index}),
+            PosList = regular_indexes(Tab),
 	    remote_dirty_match_object(Tab, Pat, PosList)
     end.
 
@@ -1849,7 +1915,7 @@ remote_dirty_select(Tab, Spec) ->
 		false ->
 		    mnesia_lib:db_select(Tab, Spec);
 		true  ->
-		    PosList = val({Tab, index}),
+		    PosList = regular_indexes(Tab),
 		    remote_dirty_select(Tab, Spec, PosList)
 	    end;
 	_ ->
@@ -1916,6 +1982,8 @@ dirty_index_match_object(Pat, _Attr) ->
 dirty_index_match_object(Tab, Pat, Attr)
   when is_atom(Tab), Tab /= schema, is_tuple(Pat), tuple_size(Pat) > 2 ->
     case mnesia_schema:attr_tab_to_pos(Tab, Attr) of
+        {_} ->
+            dirty_match_object(Tab, Pat);
 	Pos when Pos =< tuple_size(Pat) ->
 	    case has_var(element(2, Pat)) of
 		false ->
@@ -3246,3 +3314,7 @@ put_activity_id(Activity) ->
     mnesia_tm:put_activity_id(Activity).
 put_activity_id(Activity,Fun) ->
     mnesia_tm:put_activity_id(Activity,Fun).
+
+regular_indexes(Tab) ->
+    PosList = val({Tab, index}),
+    [P || P <- PosList, is_integer(P)].
diff --git a/lib/mnesia/src/mnesia_dumper.erl b/lib/mnesia/src/mnesia_dumper.erl
index a2880d6cf4..8ab11be2d3 100644
--- a/lib/mnesia/src/mnesia_dumper.erl
+++ b/lib/mnesia/src/mnesia_dumper.erl
@@ -67,10 +67,10 @@ get_log_writes() ->
 incr_log_writes() ->
     Left = mnesia_lib:incr_counter(trans_log_writes_left, -1),
     if
-	Left > 0 ->
-	    ignore;
+	Left =:= 0 ->
+	    adjust_log_writes(true);
 	true ->
-	    adjust_log_writes(true)
+	    ignore
     end.
 
 adjust_log_writes(DoCast) ->
@@ -272,17 +272,12 @@ do_insert_rec(Tid, Rec, InPlace, InitBy, LogV) ->
 	    end
     end,
     D = Rec#commit.disc_copies,
-    ExtOps = commit_ext(Rec),
     insert_ops(Tid, disc_copies, D, InPlace, InitBy, LogV),
-    [insert_ops(Tid, Ext, Ops, InPlace, InitBy, LogV) ||
-	{Ext, Ops} <- ExtOps,
-	storage_semantics(Ext) == disc_copies],
+    insert_ext_ops(Tid, commit_ext(Rec), InPlace, InitBy),
     case InitBy of
 	startup ->
 	    DO = Rec#commit.disc_only_copies,
-	    insert_ops(Tid, disc_only_copies, DO, InPlace, InitBy, LogV),
-	    [insert_ops(Tid, Ext, Ops, InPlace, InitBy, LogV) ||
-		{Ext, Ops} <- ExtOps, storage_semantics(Ext) == disc_only_copies];
+	    insert_ops(Tid, disc_only_copies, DO, InPlace, InitBy, LogV);
 	_ ->
 	    ignore
     end.
@@ -290,11 +285,8 @@ do_insert_rec(Tid, Rec, InPlace, InitBy, LogV) ->
 commit_ext(#commit{ext = []}) -> [];
 commit_ext(#commit{ext = Ext}) ->
     case lists:keyfind(ext_copies, 1, Ext) of
-	{_, C} ->
-	    lists:foldl(fun({Ext0, Op}, D) ->
-				orddict:append(Ext0, Op, D)
-			end, orddict:new(), C);
-	false -> []
+        {_, C} -> C;
+        false -> []
     end.
 
 update(_Tid, [], _DumperMode) ->
@@ -330,6 +322,21 @@ perform_update(Tid, SchemaOps, _DumperMode, _UseDir) ->
             fatal("Schema update error ~tp ~tp", [{Reason,ST}, SchemaOps])
     end.
 
+insert_ext_ops(Tid, ExtOps, InPlace, InitBy) ->
+  %% Note: ext ops cannot be part of pre-4.3 logs, so there's no need
+  %% to support the old operation order, as in `insert_ops'
+  lists:foreach(
+    fun ({Ext, Op}) ->
+        case storage_semantics(Ext) of
+          Semantics when Semantics == disc_copies;
+                         Semantics == disc_only_copies, InitBy == startup ->
+            insert_op(Tid, Ext, Op, InPlace, InitBy);
+          _Other ->
+            ok
+        end
+    end,
+    ExtOps).
+
 insert_ops(_Tid, _Storage, [], _InPlace, _InitBy, _) ->    ok;
 insert_ops(Tid, Storage, [Op], InPlace, InitBy, Ver)  when Ver >= "4.3"->
     insert_op(Tid, Storage, Op, InPlace, InitBy),
diff --git a/lib/mnesia/src/mnesia_index.erl b/lib/mnesia/src/mnesia_index.erl
index 098265d5fc..6f1c21e3b9 100644
--- a/lib/mnesia/src/mnesia_index.erl
+++ b/lib/mnesia/src/mnesia_index.erl
@@ -1,8 +1,8 @@
 %%
 %% %CopyrightBegin%
-%% 
+%%
 %% Copyright Ericsson AB 1996-2018. All Rights Reserved.
-%% 
+%%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
 %% You may obtain a copy of the License at
@@ -14,7 +14,7 @@
 %% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 %% See the License for the specific language governing permissions and
 %% limitations under the License.
-%% 
+%%
 %% %CopyrightEnd%
 %%
 
@@ -37,7 +37,7 @@
 	 db_match_erase/2,
 	 get_index_table/2,
 	 get_index_table/3,
-	 
+
 	 tab2filename/2,
 	 init_index/2,
 	 init_indecies/3,
@@ -45,6 +45,7 @@
 	 del_transient/3,
 	 del_index_table/3,
 
+         index_vals_f/3,
          index_info/2,
 	 ext_index_instances/1]).
 
@@ -60,9 +61,14 @@ read(Tid, Store, Tab, IxKey, Pos) ->
     ResList = mnesia_locker:ixrlock(Tid, Store, Tab, IxKey, Pos),
     %% Remove all tuples which don't include Ixkey, happens when Tab is a bag
     case val({Tab, setorbag}) of
-	bag -> 
+	bag when is_integer(Pos) ->
 	    mnesia_lib:key_search_all(IxKey, Pos, ResList);
-	_ -> 
+        bag when is_tuple(Pos) ->
+            TabStorage = val({Tab, storage_type}),
+            ValsF = index_vals_f(TabStorage, Tab, Pos),
+            [Obj || Obj <- ResList,
+                    lists:member(IxKey, ValsF(Obj))];
+	_ ->
 	    ResList
     end.
 
@@ -136,7 +142,7 @@ del_object_index2([], _, _Storage, _Tab, _K, _Obj) -> ok;
 del_object_index2([{{Pos, Type}, Ixt} | Tail], SoB, Storage, Tab, K, Obj) ->
     ValsF = index_vals_f(Storage, Tab, Pos),
     case SoB of
-	bag -> 
+	bag ->
 	    del_object_bag(Type, ValsF, Tab, K, Obj, Ixt);
 	_ -> %% If set remove the tuple in index table
 	    del_ixes(Type, Ixt, ValsF, Obj, K)
@@ -197,7 +203,7 @@ merge([], _, _, Ack) ->
 realkeys(Tab, Pos, IxKey) ->
     Index = get_index_table(Tab, Pos),
     db_get(Index, IxKey). % a list on the form [{IxKey, RealKey1} , ....
-    
+
 dirty_select(Tab, Spec, Pos) when is_integer(Pos) ->
     %% Assume that we are on the node where the replica is
     %% Returns the records without applying the match spec
@@ -233,7 +239,7 @@ dirty_read2(Tab, IxKey, Pos) ->
 		  end, Acc, mnesia_lib:db_get(Storage, Tab, K))
 	end, [], Keys)).
 
-pick_index([{{{Pfx,_},IxType}, Ixt}|_], _Tab, {_} = Pfx) ->
+pick_index([{{{Pfx,_,_},IxType}, Ixt}|_], _Tab, {_} = Pfx) ->
     {IxType, Ixt};
 pick_index([{{Pos,IxType}, Ixt}|_], _Tab, Pos) ->
     {IxType, Ixt};
@@ -242,7 +248,7 @@ pick_index([_|T], Tab, Pos) ->
 pick_index([], Tab, Pos) ->
     mnesia:abort({no_exist, Tab, {index, Pos}}).
 
-	    
+
 
 %%%%%%% Creation, Init and deletion routines for index tables
 %% We can have several indexes on the same table
@@ -387,12 +393,12 @@ init_ext_index(Tab, Storage, Alias, Mod, [{Pos,Type} | Tail]) ->
 create_fun(Cont, Tab, Pos) ->
     IxF = index_vals_f(disc_only_copies, Tab, Pos),
     fun(read) ->
-	    Data = 
+	    Data =
 		case Cont of
 		    {start, KeysPerChunk} ->
 			mnesia_lib:db_init_chunk(
 			  disc_only_copies, Tab, KeysPerChunk);
-		    '$end_of_table' -> 
+		    '$end_of_table' ->
 			'$end_of_table';
 		    _Else ->
 			mnesia_lib:db_chunk(disc_only_copies, Cont)
@@ -462,7 +468,7 @@ add_index_info(Tab, SetOrBag, IxElem) ->
 	    %% Check later if mnesia_tm is sensitive about the order
 	    mnesia_lib:set({Tab, index_info}, IndexInfo),
 	    mnesia_lib:set({Tab, index}, index_positions(IndexInfo)),
-	    mnesia_lib:set({Tab, commit_work}, 
+	    mnesia_lib:set({Tab, commit_work},
 			   mnesia_lib:sort_commit([IndexInfo | Commit]));
 	{value, Old} ->
 	    %% We could check for consistency here
@@ -470,7 +476,7 @@ add_index_info(Tab, SetOrBag, IxElem) ->
 	    mnesia_lib:set({Tab, index_info}, Index),
 	    mnesia_lib:set({Tab, index}, index_positions(Index)),
 	    NewC = lists:keyreplace(index, 1, Commit, Index),
-	    mnesia_lib:set({Tab, commit_work}, 
+	    mnesia_lib:set({Tab, commit_work},
 			   mnesia_lib:sort_commit(NewC))
     end.
 
@@ -488,19 +494,19 @@ del_index_info(Tab, Pos) ->
                                       element(1,P)=/=Pos
                               end,
                               Old#index.pos_list) of
-		[] -> 
+		[] ->
                     IndexInfo = index_info(Old#index.setorbag,[]),
 		    mnesia_lib:set({Tab, index_info}, IndexInfo),
 		    mnesia_lib:set({Tab, index}, index_positions(IndexInfo)),
 		    NewC = lists:keydelete(index, 1, Commit),
-		    mnesia_lib:set({Tab, commit_work}, 
+		    mnesia_lib:set({Tab, commit_work},
 				   mnesia_lib:sort_commit(NewC));
 		New ->
 		    Index = Old#index{pos_list = New},
 		    mnesia_lib:set({Tab, index_info}, Index),
 		    mnesia_lib:set({Tab, index}, index_positions(Index)),
 		    NewC = lists:keyreplace(index, 1, Commit, Index),
-		    mnesia_lib:set({Tab, commit_work}, 
+		    mnesia_lib:set({Tab, commit_work},
 				   mnesia_lib:sort_commit(NewC))
 	    end
     end.
@@ -537,7 +543,7 @@ db_match_erase({{ext,_,_} = Ext, Ixt}, Pat) ->
     mnesia_lib:db_match_erase(Ext, Ixt, Pat);
 db_match_erase({dets, Ixt}, Pat) ->
     ok = dets:match_delete(Ixt, Pat).
-    
+
 db_select({ram, Ixt}, Pat) ->
     ets:select(Ixt, Pat);
 db_select({{ext,_,_} = Ext, Ixt}, Pat) ->
@@ -545,7 +551,7 @@ db_select({{ext,_,_} = Ext, Ixt}, Pat) ->
 db_select({dets, Ixt}, Pat) ->
     dets:select(Ixt, Pat).
 
-    
+
 get_index_table(Tab, Pos) ->
     get_index_table(Tab,  val({Tab, storage_type}), Pos).
 
diff --git a/lib/mnesia/src/mnesia_lib.erl b/lib/mnesia/src/mnesia_lib.erl
index a884b8e086..6abc05fade 100644
--- a/lib/mnesia/src/mnesia_lib.erl
+++ b/lib/mnesia/src/mnesia_lib.erl
@@ -929,7 +929,7 @@ error_desc(no_transaction) -> "Operation not allowed outside transactions";
 error_desc(combine_error)  -> "Table options were ilegally combined";
 error_desc(bad_index)  -> "Index already exists or was out of bounds";
 error_desc(already_exists) -> "Some schema option we try to set is already on";
-error_desc(index_exists)-> "Some ops can not  be performed on tabs with index";
+error_desc(index_exists)-> "Some ops cannot  be performed on tabs with index";
 error_desc(no_exists)-> "Tried to perform op on non-existing (non alive) item";
 error_desc(system_limit) -> "Some system_limit was exhausted";
 error_desc(mnesia_down) -> "A transaction involving objects at some remote "
diff --git a/lib/mnesia/src/mnesia_tm.erl b/lib/mnesia/src/mnesia_tm.erl
index 4b3fffc735..cbf7db28f0 100644
--- a/lib/mnesia/src/mnesia_tm.erl
+++ b/lib/mnesia/src/mnesia_tm.erl
@@ -1661,7 +1661,7 @@ commit_participant(Coord, Tid, Bin, C0, DiscNs, _RamNs) ->
     ?eval_debug_fun({?MODULE, commit_participant, pre}, [{tid, Tid}]),
     try mnesia_schema:prepare_commit(Tid, C0, {part, Coord}) of
 	{Modified, C = #commit{}, DumperMode} ->
-	    %% If we can not find any local unclear decision
+	    %% If we cannot find any local unclear decision
 	    %% we should presume abort at startup recovery
 	    case lists:member(node(), DiscNs) of
 		false ->
diff --git a/lib/mnesia/test/Makefile b/lib/mnesia/test/Makefile
index 5b61b1af65..b43bc82801 100644
--- a/lib/mnesia/test/Makefile
+++ b/lib/mnesia/test/Makefile
@@ -53,7 +53,8 @@ MODULES= \
 	mnesia_measure_test \
 	mnesia_cost \
 	mnesia_dbn_meters \
-	ext_test
+	ext_test \
+	mnesia_index_plugin_test
 
 DocExamplesDir := ../doc/src/
 
diff --git a/lib/mnesia/test/README b/lib/mnesia/test/README
index e0ced7399d..30a0d2fd64 100644
--- a/lib/mnesia/test/README
+++ b/lib/mnesia/test/README
@@ -51,7 +51,7 @@ stated as test suite configuration parameters, but by default
 the extra node names are generated. In this example the names
 will be: a, a1 and a2. It is enough to start the first node
 manually, the extra nodes will automatically be started if
-neccessary.
+necessary.
 
 The attached UNIX shell script mt, does not work on all
 platforms, but it may be used as a source for inspiration. It
@@ -63,7 +63,7 @@ test cases (i.e. test cases that encountered an error).
 During development we want to be able to run the test cases
 in the debugger. This demands a little bit of preparations:
 
-  - Start the neccessary number of nodes (normally 3).
+  - Start the necessary number of nodes (normally 3).
     This may either be done by running the mt script or
     by starting the main node and then invoke mt:start_nodes()
     to start the extra nodes with slave.
@@ -73,7 +73,7 @@ in the debugger. This demands a little bit of preparations:
 
   - Load all files that needs to be interpreted. This is typically
     all Mnesia files plus the test case. By invoking mnesia:ni()
-    and mnesia:ni([TestModule]) the neccessary modules will be
+    and mnesia:ni([TestModule]) the necessary modules will be
     loaded on all CONNECTED nodes.
 
 The test case execution is supervised in order to ensure that no test
diff --git a/lib/mnesia/test/mnesia_SUITE.erl b/lib/mnesia/test/mnesia_SUITE.erl
index 24c1def6da..b41bf22efa 100644
--- a/lib/mnesia/test/mnesia_SUITE.erl
+++ b/lib/mnesia/test/mnesia_SUITE.erl
@@ -69,12 +69,13 @@ groups() ->
     %% covered.
     [{light, [],
       [{group, install}, {group, nice}, {group, evil},
-       {group, mnesia_frag_test, light}, {group, qlc},
+       {group, mnesia_frag_test, light}, {group, qlc}, {group, index_plugins},
        {group, registry}, {group, config}, {group, examples}]},
      {install, [], [{mnesia_install_test, all}]},
      {nice, [], [{mnesia_nice_coverage_test, all}]},
      {evil, [], [{mnesia_evil_coverage_test, all}]},
      {qlc, [], [{mnesia_qlc_test, all}]},
+     {index_plugins, [], [{mnesia_index_plugin_test, all}]},
      {registry, [], [{mnesia_registry_test, all}]},
      {config, [], [{mnesia_config_test, all}]},
      {examples, [], [{mnesia_examples_test, all}]},
diff --git a/lib/mnesia/test/mnesia_index_plugin_test.erl b/lib/mnesia/test/mnesia_index_plugin_test.erl
new file mode 100644
index 0000000000..44fe047c50
--- /dev/null
+++ b/lib/mnesia/test/mnesia_index_plugin_test.erl
@@ -0,0 +1,261 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 1996-2018. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+%%
+-module(mnesia_index_plugin_test).
+-author('[email protected]').
+
+-export([init_per_testcase/2, end_per_testcase/2,
+         init_per_group/2, end_per_group/2,
+         init_per_suite/1, end_per_suite/1,
+         all/0, groups/0]).
+
+-export([
+         add_rm_plugin/1,
+         tab_with_plugin_index/1,
+         tab_with_multiple_plugin_indexes/1,
+         ix_match_w_plugin/1,
+         ix_match_w_plugin_ordered/1,
+         ix_match_w_plugin_bag/1
+        ]).
+
+-export([ix_prefixes/3,    % test plugin
+         ix_prefixes2/3]). % test plugin 2
+
+-include("mnesia_test_lib.hrl").
+
+init_per_suite(Conf) ->
+    Conf.
+
+end_per_suite(Conf) ->
+    Conf.
+
+init_per_testcase(Func, Conf) ->
+    mnesia_test_lib:init_per_testcase(Func, Conf).
+
+end_per_testcase(Func, Conf) ->
+    mnesia_test_lib:end_per_testcase(Func, Conf).
+
+all() ->
+    [add_rm_plugin,
+     tab_with_plugin_index,
+     tab_with_multiple_plugin_indexes,
+     ix_match_w_plugin,
+     ix_match_w_plugin_ordered,
+     ix_match_w_plugin_bag].
+
+groups() ->
+    [].
+
+init_per_group(_GroupName, Config) ->
+    Config.
+
+end_per_group(_GroupName, Config) ->
+    Config.
+
+
+add_rm_plugin(suite) -> [];
+add_rm_plugin(Config) when is_list(Config) ->
+    [N1, N2] = Nodes = ?acquire_nodes(2, Config),
+    ok = add_plugin(),
+    ok = rpc_check_plugin(N1),
+    ok = rpc_check_plugin(N2),
+    ok = add_plugin2(),
+    ok = del_plugin(),
+    ok = del_plugin2(),
+    ok = add_plugin(),
+    ok = add_plugin2(),
+    ok = del_plugin(),
+    ok = del_plugin2(),
+    ?verify_mnesia(Nodes, []).
+
+-define(PLUGIN1, {{pfx},?MODULE,ix_prefixes}).
+-define(PLUGIN2, {{pfx2},?MODULE,ix_prefixes2}).
+
+add_plugin() ->
+    {atomic, ok} = mnesia_schema:add_index_plugin({pfx}, ?MODULE, ix_prefixes),
+    [?PLUGIN1] = mnesia_schema:index_plugins(),
+    ok.
+
+add_plugin2() ->
+    {atomic, ok} = mnesia_schema:add_index_plugin({pfx2}, ?MODULE, ix_prefixes2),
+    [?PLUGIN1, ?PLUGIN2] = lists:sort(mnesia_schema:index_plugins()),
+    ok.
+
+del_plugin() ->
+    {atomic, ok} = mnesia_schema:delete_index_plugin({pfx}),
+    [?PLUGIN2] = mnesia_schema:index_plugins(),
+    ok.
+
+del_plugin2() ->
+    {atomic, ok} = mnesia_schema:delete_index_plugin({pfx2}),
+    [] = mnesia_schema:index_plugins(),
+    ok.
+
+rpc_check_plugin(N) ->
+    [?PLUGIN1] =
+        rpc:call(N, mnesia_schema, index_plugins, []),
+    ok.
+
+tab_with_plugin_index(suite) -> [];
+tab_with_plugin_index(Config) when is_list(Config) ->
+    [_N1] = Nodes = ?acquire_nodes(1, Config),
+    ok = add_plugin(),
+    {atomic, ok} = mnesia:create_table(t, [{attributes, [k,v1,v2]},
+                                           {index, [{{pfx}, ordered},
+                                                    {v1, ordered},
+                                                    v2]}]),
+    [ok,ok,ok,ok] =
+        [mnesia:dirty_write({t, K, V1, V2})
+         || {K,V1,V2} <- [{1,a,"123"},
+                          {2,b,"12345"},
+                          {3,c,"6789"},
+                          {4,d,nil}]],
+    [{t,1,a,"123"},{t,2,b,"12345"}] =
+        mnesia:dirty_index_read(t,<<"123">>,{pfx}),
+    [{t,3,c,"6789"}] =
+        mnesia:dirty_index_read(t,"6789",v2),
+    [{t,1,a,"123"}] =
+        mnesia:dirty_match_object({t,'_',a,"123"}),
+    [{t,1,a,"123"}] =
+        mnesia:dirty_select(t, [{ {t,'_',a,"123"}, [], ['$_']}]),
+    mnesia:dirty_delete(t,2),
+    [{t,1,a,"123"}] =
+        mnesia:dirty_index_read(t,<<"123">>,{pfx}),
+    ?verify_mnesia(Nodes, []).
+
+tab_with_multiple_plugin_indexes(suite) -> [];
+tab_with_multiple_plugin_indexes(Config) when is_list(Config) ->
+    [_N1] = Nodes = ?acquire_nodes(1, Config),
+    ok = add_plugin(),
+    ok = add_plugin2(),
+    {atomic, ok} =
+        mnesia:create_table(u, [{attributes, [k,v1,v2]},
+                                {index, [{{pfx}, ordered},
+                                         {{pfx2}, ordered}]}]),
+        [ok,ok,ok,ok] =
+        [mnesia:dirty_write({u, K, V1, V2})
+         || {K,V1,V2} <- [{1,a,"123"},
+                          {2,b,"12345"},
+                          {3,c,"6789"},
+                          {4,d,nil}]],
+    [{u,1,a,"123"},{u,2,b,"12345"}] =
+        mnesia:dirty_index_read(u,<<"123">>,{pfx}),
+    [{u,1,a,"123"},{u,2,b,"12345"}] =
+        mnesia:dirty_index_read(u,<<"321">>,{pfx2}),
+    ?verify_mnesia(Nodes, []).
+
+ix_match_w_plugin(suite) -> [];
+ix_match_w_plugin(Config) when is_list(Config) ->
+    [_N1] = Nodes = ?acquire_nodes(1, Config),
+    ok = add_plugin(),
+    {atomic, ok} = mnesia:create_table(im1, [{attributes, [k, v1, v2]},
+                                             {index, [{{pfx}, ordered},
+                                                      {v1, ordered}]}]),
+    fill_and_test_index_match(im1, set),
+    ?verify_mnesia(Nodes, []).
+
+
+ix_match_w_plugin_ordered(suite) -> [];
+ix_match_w_plugin_ordered(Config) when is_list(Config) ->
+    [_N1] = Nodes = ?acquire_nodes(1, Config),
+    ok = add_plugin(),
+    {atomic, ok} = mnesia:create_table(im2, [{attributes, [k, v1, v2]},
+                                             {type, ordered_set},
+                                             {index, [{{pfx}, ordered},
+                                                      {v1, ordered}]}]),
+    fill_and_test_index_match(im2, ordered_set),
+    ?verify_mnesia(Nodes, []).
+
+ix_match_w_plugin_bag(suite) -> [];
+ix_match_w_plugin_bag(Config) when is_list(Config) ->
+    [_N1] = Nodes = ?acquire_nodes(1, Config),
+    ok = add_plugin(),
+    {atomic, ok} = mnesia:create_table(im3, [{attributes, [k, v1, v2]},
+                                             {type, bag},
+                                             {index, [{{pfx}, ordered},
+                                                      {v1, ordered}]}]),
+    fill_and_test_index_match(im3, bag),
+    ?verify_mnesia(Nodes, []).
+
+fill_and_test_index_match(Tab, Type) ->
+    [ok,ok,ok,ok,ok,ok,ok,ok,ok] =
+        [mnesia:dirty_write({Tab, K, V1, V2})
+         || {K,V1,V2} <- [{1,a,"123"},
+                          {2,b,"12345"},
+                          {3,c,"123"},
+                          {4,d,nil},
+                          {5,e,nil},
+                          {6,f,nil},
+                          {7,g,nil},  %% overwritten if not bag
+                          {7,g,"234"},
+                          {8,h,"123"}]],
+    mnesia:activity(
+      transaction,
+      fun() ->
+              ok = mnesia:write({Tab, 1, aa, "1234"}), %% replaces if not bag
+              ok = mnesia:delete({Tab, 2}),
+              ok = mnesia:delete({Tab, 4}),
+              ok = mnesia:write({Tab, 6, ff, nil}),
+              ok = mnesia:write({Tab, 7, gg, "123"}),
+              ok = mnesia:write({Tab, 100, x, nil}),
+              ok = mnesia:delete_object({Tab,3,c,"123"}),
+              ok = mnesia:delete_object({Tab,5,e,nil}),
+              Res = mnesia:index_read(Tab, <<"123">>, {pfx}),
+              SetRes = [{Tab,1,aa,"1234"}, {Tab,7,gg,"123"}, {Tab,8,h,"123"}],
+              case Type of
+                  set ->
+                      SetRes = lists:sort(Res);
+                  ordered_set ->
+                      SetRes = Res;
+                  bag ->
+                      [{Tab,1,a,"123"}, {Tab,1,aa,"1234"},
+                       {Tab,7,gg,"123"}, {Tab,8,h,"123"}] = lists:sort(Res)
+              end
+      end).
+
+%% ============================================================
+%%
+ix_prefixes(_Tab, _Pos, Obj) ->
+    lists:foldl(
+      fun(V, Acc) when is_list(V) ->
+              try Pfxs = prefixes(list_to_binary(V)),
+                   Pfxs ++ Acc
+              catch
+                  error:_ ->
+                      Acc
+              end;
+         (V, Acc) when is_binary(V) ->
+              Pfxs = prefixes(V),
+              Pfxs ++ Acc;
+         (_, Acc) ->
+              Acc
+      end, [], tl(tuple_to_list(Obj))).
+
+ix_prefixes2(Tab, Pos, Obj) ->
+    [rev(P) || P <- ix_prefixes(Tab, Pos, Obj)].
+
+rev(B) when is_binary(B) ->
+    list_to_binary(lists:reverse(binary_to_list(B))).
+
+prefixes(<<P:3/binary, _/binary>>) ->
+    [P];
+prefixes(_) ->
+    [].
diff --git a/lib/mnesia/test/mt.erl b/lib/mnesia/test/mt.erl
index 5a981bf539..037d6adb38 100644
--- a/lib/mnesia/test/mt.erl
+++ b/lib/mnesia/test/mt.erl
@@ -67,6 +67,7 @@ alias(recovery) -> mnesia_recovery_test;
 alias(registry) -> mnesia_registry_test;
 alias(suite) -> mnesia_SUITE;
 alias(trans) -> mnesia_trans_access_test;
+alias(ixp) -> mnesia_index_plugin_test;
 alias(Other) -> Other.
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
diff --git a/lib/mnesia/vsn.mk b/lib/mnesia/vsn.mk
index 1cfb35c774..781a4830a0 100644
--- a/lib/mnesia/vsn.mk
+++ b/lib/mnesia/vsn.mk
@@ -1 +1 @@
-MNESIA_VSN = 4.15.5
+MNESIA_VSN = 4.15.6
diff --git a/lib/observer/doc/src/crashdump.xml b/lib/observer/doc/src/crashdump.xml
index 48f944cbce..62c6ff1f25 100644
--- a/lib/observer/doc/src/crashdump.xml
+++ b/lib/observer/doc/src/crashdump.xml
@@ -34,7 +34,7 @@
     <rev>PA1</rev>
     <file>crashdump.xml</file>
   </header>
-  <module>crashdump_viewer</module>
+  <module since="">crashdump_viewer</module>
   <modulesummary>A WxWidgets based tool for browsing Erlang
   crashdumps.</modulesummary>
   <description>
@@ -46,8 +46,8 @@
   </description>
   <funcs>
     <func>
-      <name>start() -> ok</name>
-      <name>start(File) -> ok</name>
+      <name since="">start() -> ok</name>
+      <name since="OTP 17.0">start(File) -> ok</name>
       <fsummary>Start the Crashdump Viewer.</fsummary>
       <type>
         <v>File = string()</v>
@@ -62,7 +62,7 @@
       </desc>
     </func>
     <func>
-      <name>stop() -> ok</name>
+      <name since="">stop() -> ok</name>
       <fsummary>Terminate the Crashdump Viewer.</fsummary>
       <desc>
         <p>Terminates the Crashdump Viewer and closes
diff --git a/lib/observer/doc/src/etop.xml b/lib/observer/doc/src/etop.xml
index e7a83d0514..f0acc7b5d8 100644
--- a/lib/observer/doc/src/etop.xml
+++ b/lib/observer/doc/src/etop.xml
@@ -34,7 +34,7 @@
     <rev></rev>
     <file></file>
   </header>
-  <module>etop</module>
+  <module since="">etop</module>
   <modulesummary>Erlang Top is a tool for presenting information about Erlang
   processes similar to the information presented by "top" in UNIX.</modulesummary>
   <description>
@@ -98,7 +98,7 @@
   </description>
   <funcs>
     <func>
-      <name>start() -> ok</name>
+      <name since="OTP R15B01">start() -> ok</name>
       <fsummary>Start etop.</fsummary>
       <desc>
         <p>Starts <c>etop</c>.
@@ -106,7 +106,7 @@
       </desc>
     </func>
     <func>
-      <name>start(Options) -> ok</name>
+      <name since="OTP R15B01">start(Options) -> ok</name>
       <fsummary>Start etop.</fsummary>
       <type>
         <v>Options = [Option]</v>
@@ -120,7 +120,7 @@
       </desc>
     </func>
     <func>
-      <name>help() -> ok</name>
+      <name since="OTP R15B01">help() -> ok</name>
       <fsummary>Display the etop help.</fsummary>
       <desc>
         <p>Displays the help of <c>etop</c> and
@@ -128,7 +128,7 @@
       </desc>
     </func>
     <func>
-      <name>config(Key,Value) -> Result</name>
+      <name since="">config(Key,Value) -> Result</name>
       <fsummary>Change the configuration of the tool.</fsummary>
       <type>
         <v>Result = ok | {error,Reason}</v>
@@ -142,7 +142,7 @@
       </desc>
     </func>
     <func>
-      <name>dump(File) -> Result</name>
+      <name since="">dump(File) -> Result</name>
       <fsummary>Dump the current display to a file.</fsummary>
       <type>
         <v>Result = ok | {error,Reason}</v>
@@ -153,7 +153,7 @@
       </desc>
     </func>
     <func>
-      <name>stop() -> stop</name>
+      <name since="">stop() -> stop</name>
       <fsummary>Terminate etop.</fsummary>
       <desc>
         <p>Terminates <c>etop</c>.</p>
diff --git a/lib/observer/doc/src/notes.xml b/lib/observer/doc/src/notes.xml
index 22035af982..2d914f8c61 100644
--- a/lib/observer/doc/src/notes.xml
+++ b/lib/observer/doc/src/notes.xml
@@ -32,6 +32,45 @@
   <p>This document describes the changes made to the Observer
     application.</p>
 
+<section><title>Observer 2.9</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Since Logger was introduced in OTP-21.0, menu choice
+	    <em>Log &gt; Toggle Log View</em> in observer would cause
+	    a crash unless an <c>error_logger</c> event handler was
+	    explicitly installed. This is now corrected.</p>
+          <p>
+	    Own Id: OTP-15553 Aux Id: ERL-848 </p>
+        </item>
+      </list>
+    </section>
+
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+          <p>
+	    Since persistent_term was introduced, observer would
+	    sometimes crash when expanding a term from a process
+	    state. This is now corrected.</p>
+          <p>
+	    Own Id: OTP-15493 Aux Id: ERL-810 </p>
+        </item>
+        <item>
+          <p>
+	    Add <c>OBSERVER_SCALE</c> environment variable for HiDPI
+	    support.</p>
+          <p>
+	    Own Id: OTP-15586 Aux Id: PR-2105 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Observer 2.8.2</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
diff --git a/lib/observer/doc/src/observer.xml b/lib/observer/doc/src/observer.xml
index 843be26ee1..7fb1dd044e 100644
--- a/lib/observer/doc/src/observer.xml
+++ b/lib/observer/doc/src/observer.xml
@@ -33,7 +33,7 @@
     <rev>PA1</rev>
     <file>observer.xml</file>
   </header>
-  <module>observer</module>
+  <module since="OTP R15B">observer</module>
   <modulesummary>A GUI tool for observing an Erlang system.</modulesummary>
   <description>
     <p>Observer is a graphical tool for observing the characteristics of
@@ -48,7 +48,7 @@
   </description>
   <funcs>
     <func>
-      <name>start() -> ok</name>
+      <name since="OTP R15B">start() -> ok</name>
       <fsummary>Start the Observer GUI.</fsummary>
       <desc>
         <p>Starts the Observer GUI.
diff --git a/lib/observer/doc/src/ttb.xml b/lib/observer/doc/src/ttb.xml
index 7cd15e15d3..fee95e0b21 100644
--- a/lib/observer/doc/src/ttb.xml
+++ b/lib/observer/doc/src/ttb.xml
@@ -33,7 +33,7 @@
     <rev>PA1</rev>
     <file>ttb.xml</file>
   </header>
-  <module>ttb</module>
+  <module since="">ttb</module>
   <modulesummary>A base for building trace tools for distributed systems.</modulesummary>
   <description>
     <p>The Trace Tool Builder, <c>ttb</c>, is a base for building trace
@@ -44,7 +44,7 @@
   </description>
   <funcs>
     <func>
-      <name>start_trace(Nodes, Patterns, FlagSpec, Opts) -> Result</name>
+      <name since="OTP R15B">start_trace(Nodes, Patterns, FlagSpec, Opts) -> Result</name>
       <fsummary>Start a trace port on each specified node.</fsummary>
       <type>
         <v>Result = see p/2</v>
@@ -76,7 +76,7 @@ ttb:p(all, call).</input></pre>
     </func>
 
     <func>
-      <name>tracer() -> Result</name>
+      <name since="">tracer() -> Result</name>
       <fsummary>Equivalent to tracer(node()).</fsummary>
       <desc>
         <p>Equivalent to <c>tracer(node())</c>.</p>
@@ -84,7 +84,7 @@ ttb:p(all, call).</input></pre>
     </func>
 
     <func>
-      <name>tracer(Shortcut) -> Result</name>
+      <name since="">tracer(Shortcut) -> Result</name>
       <fsummary>Handy shortcuts for common tracing settings.</fsummary>
       <type>
         <v>Shortcut = shell | dbg</v>
@@ -97,7 +97,7 @@ ttb:p(all, call).</input></pre>
     </func>
 
     <func>
-      <name>tracer(Nodes) -> Result</name>
+      <name since="">tracer(Nodes) -> Result</name>
       <fsummary>Equivalent to tracer(Nodes,[]).</fsummary>
       <desc>
         <p>Equivalent to <c>tracer(Nodes,[])</c>.</p>
@@ -105,7 +105,7 @@ ttb:p(all, call).</input></pre>
     </func>
 
     <func>
-      <name>tracer(Nodes,Opts) -> Result</name>
+      <name since="">tracer(Nodes,Opts) -> Result</name>
       <fsummary>Start a trace port on each specified node.</fsummary>
       <type>
         <v>Result = {ok, ActivatedNodes} | {error,Reason}</v>
@@ -243,7 +243,7 @@ ttb:p(all, call).</input></pre>
     </func>
 
     <func>
-      <name>p(Item,Flags) -> Return</name>
+      <name since="">p(Item,Flags) -> Return</name>
       <fsummary>Set the specified trace flags on the specified processes or ports.</fsummary>
       <type>
         <v>Return  = {ok,[{Item,MatchDesc}]}</v>
@@ -277,7 +277,8 @@ ttb:p(all, call).</input></pre>
     </func>
 
     <func>
-      <name>tp, tpl, tpe, ctp, ctpl, ctpg, ctpe</name>
+      <name since="">tp, tpl, ctp, ctpl, ctpg</name>
+      <name since="OTP 19.0">tpe, ctpe</name>
       <fsummary>Set and clear trace patterns.</fsummary>
       <desc>
         <p>These functions are to be used with trace
@@ -338,7 +339,7 @@ ttb:p(all, call).</input></pre>
     </func>
 
     <func>
-      <name>list_history() -> History</name>
+      <name since="">list_history() -> History</name>
       <fsummary>Return all calls stored in history.</fsummary>
       <type>
         <v>History = [{N,Func,Args}]</v>
@@ -352,7 +353,7 @@ ttb:p(all, call).</input></pre>
     </func>
 
     <func>
-      <name>run_history(N) -> ok | {error, Reason}</name>
+      <name since="">run_history(N) -> ok | {error, Reason}</name>
       <fsummary>Execute one entry of the history.</fsummary>
       <type>
         <v>N = integer() | [integer()]</v>
@@ -364,7 +365,7 @@ ttb:p(all, call).</input></pre>
     </func>
 
     <func>
-      <name>write_config(ConfigFile,Config)</name>
+      <name since="">write_config(ConfigFile,Config)</name>
       <fsummary>Equivalent to write_config(ConfigFile,Config,[]).</fsummary>
       <desc>
         <p>Equivalent to <c>write_config(ConfigFile,Config,[])</c>.</p>
@@ -372,7 +373,7 @@ ttb:p(all, call).</input></pre>
     </func>
 
     <func>
-      <name>write_config(ConfigFile,Config,Opts) -> ok | {error,Reason}</name>
+      <name since="">write_config(ConfigFile,Config,Opts) -> ok | {error,Reason}</name>
       <fsummary>Create a configuration file.</fsummary>
       <type>
         <v>ConfigFile = string()</v>
@@ -405,7 +406,7 @@ ttb:p(all, call).</input></pre>
     </func>
 
     <func>
-      <name>run_config(ConfigFile) -> ok | {error,Reason}</name>
+      <name since="">run_config(ConfigFile) -> ok | {error,Reason}</name>
       <fsummary>Execute all entries in a configuration file.</fsummary>
       <type>
         <v>ConfigFile = string()</v>
@@ -418,7 +419,7 @@ ttb:p(all, call).</input></pre>
     </func>
 
     <func>
-      <name>run_config(ConfigFile,NumList) -> ok | {error,Reason}</name>
+      <name since="">run_config(ConfigFile,NumList) -> ok | {error,Reason}</name>
       <fsummary>Execute selected entries from a configuration file.</fsummary>
       <type>
         <v>ConfigFile = string()</v>
@@ -437,7 +438,7 @@ ttb:p(all, call).</input></pre>
     </func>
 
     <func>
-      <name>list_config(ConfigFile) -> Config | {error,Reason}</name>
+      <name since="">list_config(ConfigFile) -> Config | {error,Reason}</name>
       <fsummary>List all entries in a configuration file.</fsummary>
       <type>
         <v>ConfigFile = string()</v>
@@ -449,7 +450,7 @@ ttb:p(all, call).</input></pre>
     </func>
 
     <func>
-      <name>write_trace_info(Key,Info) -> ok</name>
+      <name since="">write_trace_info(Key,Info) -> ok</name>
       <fsummary>Write any information to file <c>.ti</c>.</fsummary>
       <type>
         <v>Key = term()</v>
@@ -465,7 +466,7 @@ ttb:p(all, call).</input></pre>
     </func>
 
     <func>
-      <name>seq_trigger_ms() -> MatchSpec</name>
+      <name since="">seq_trigger_ms() -> MatchSpec</name>
       <fsummary>Equivalent to seq_trigger_ms(all).</fsummary>
       <desc>
         <p>Equivalent to <c>seq_trigger_ms(all)</c>.</p>
@@ -473,7 +474,7 @@ ttb:p(all, call).</input></pre>
     </func>
 
     <func>
-      <name>seq_trigger_ms(Flags) -> MatchSpec</name>
+      <name since="">seq_trigger_ms(Flags) -> MatchSpec</name>
       <fsummary>Return a match_spec() which starts sequential tracing.</fsummary>
       <type>
         <v>MatchSpec = match_spec()</v>
@@ -521,7 +522,7 @@ ttb:p(all, call).</input></pre>
     </func>
 
     <func>
-      <name>stop()</name>
+      <name since="">stop()</name>
       <fsummary>Equivalent to stop([]).</fsummary>
       <desc>
         <p>Equivalent to <c>stop([])</c>.</p>
@@ -529,7 +530,7 @@ ttb:p(all, call).</input></pre>
     </func>
 
     <func>
-      <name>stop(Opts) -> stopped | {stopped, Dir}</name>
+      <name since="">stop(Opts) -> stopped | {stopped, Dir}</name>
       <fsummary>Stop tracing and fetch/format logs from all nodes.</fsummary>
       <type>
         <v>Opts = Opt | [Opt]</v>
@@ -573,7 +574,7 @@ ttb:p(all, call).</input></pre>
     </func>
 
     <func>
-      <name>get_et_handler()</name>
+      <name since="OTP R15B">get_et_handler()</name>
       <fsummary>Return the <c>et</c> handler.</fsummary>
       <desc>
         <p>Returns the <c>et</c> handler, which can be used with <c>format/2</c>
@@ -583,7 +584,7 @@ ttb:p(all, call).</input></pre>
     </func>
 
     <func>
-      <name>format(File)</name>
+      <name since="">format(File)</name>
       <fsummary>Equivalent to <c>format(File,[])</c>.</fsummary>
       <desc>
         <p>Equivalent to <c>format(File,[])</c>.</p>
@@ -591,7 +592,7 @@ ttb:p(all, call).</input></pre>
     </func>
 
     <func>
-      <name>format(File,Options) -> ok | {error, Reason}</name>
+      <name since="">format(File,Options) -> ok | {error, Reason}</name>
       <fsummary>Format a binary trace log.</fsummary>
       <type>
         <v>File = string() | [string()]</v>
diff --git a/lib/observer/src/cdv_bin_cb.erl b/lib/observer/src/cdv_bin_cb.erl
index a4a542297c..91d33474c8 100644
--- a/lib/observer/src/cdv_bin_cb.erl
+++ b/lib/observer/src/cdv_bin_cb.erl
@@ -49,7 +49,7 @@ format_bin_fun(Format,Bin) ->
 	    try io_lib:format(Format,[Bin]) of
 		Str -> plain_html(lists:flatten(Str))
 	    catch error:badarg ->
-		    Warning = "This binary can not be formatted with " ++ Format,
+		    Warning = "This binary cannot be formatted with " ++ Format,
 		    observer_html_lib:warning(Warning)
 	    end
     end.
@@ -59,7 +59,7 @@ binary_to_term_fun(Bin) ->
 	    try binary_to_term(Bin) of
 		Term -> plain_html(io_lib:format("~tp",[Term]))
 	    catch error:badarg ->
-		    Warning = "This binary can not be converted to an Erlang term",
+		    Warning = "This binary cannot be converted to an Erlang term",
 		    observer_html_lib:warning(Warning)
 	    end
     end.
diff --git a/lib/observer/src/cdv_detail_wx.erl b/lib/observer/src/cdv_detail_wx.erl
index 4b1984c394..5e1137511a 100644
--- a/lib/observer/src/cdv_detail_wx.erl
+++ b/lib/observer/src/cdv_detail_wx.erl
@@ -84,8 +84,9 @@ destroy_progress(_) ->
     ok.
 
 init(Id,ParentFrame,Callback,App,Parent,{Title,Info,TW}) ->
+    Scale = observer_wx:get_scale(),
     Frame=wxFrame:new(ParentFrame, ?wxID_ANY, [Title],
-		      [{style, ?wxDEFAULT_FRAME_STYLE}, {size, {850,600}}]),
+		      [{style, ?wxDEFAULT_FRAME_STYLE}, {size, {Scale*850,Scale*600}}]),
     MenuBar = wxMenuBar:new(),
     create_menus(MenuBar),
     wxFrame:setMenuBar(Frame, MenuBar),
diff --git a/lib/observer/src/cdv_html_wx.erl b/lib/observer/src/cdv_html_wx.erl
index ffef83227c..8956173c93 100644
--- a/lib/observer/src/cdv_html_wx.erl
+++ b/lib/observer/src/cdv_html_wx.erl
@@ -79,14 +79,14 @@ handle_info(active, #state{panel=HtmlWin,delayed_fetch=Callback}=State)
     observer_lib:sync_destroy_progress_dialog(),
     wx_misc:beginBusyCursor(),
     wxHtmlWindow:setPage(HtmlWin,HtmlText),
-    cdv_wx:set_status(TW),
+    cdv_wx_set_status(State, TW),
     wx_misc:endBusyCursor(),
     {noreply, State#state{expand_table=Tab,
                           delayed_fetch=undefined,
                           trunc_warn=TW}};
 
 handle_info(active, State) ->
-    cdv_wx:set_status(State#state.trunc_warn),
+    cdv_wx_set_status(State, State#state.trunc_warn),
     {noreply, State};
 
 handle_info(Info, State) ->
@@ -164,3 +164,10 @@ expand(Id,Callback,#state{expand_wins=Opened0, app=App}=State) ->
 		Opened0
 	end,
     State#state{expand_wins=Opened}.
+
+cdv_wx_set_status(#state{app = cdv}, Status) ->
+    %% this module is used by the observer when cdw_wx isn't started
+    %% only try to set status when used by cdv
+    cdv_wx:set_status(Status);
+cdv_wx_set_status(_, _) ->
+    ok.
diff --git a/lib/observer/src/cdv_table_wx.erl b/lib/observer/src/cdv_table_wx.erl
index 0f28a51017..0cad272262 100644
--- a/lib/observer/src/cdv_table_wx.erl
+++ b/lib/observer/src/cdv_table_wx.erl
@@ -50,11 +50,12 @@ init([ParentWin, {ColumnSpec,Info,TW}]) ->
 	end,
     Grid = wxListCtrl:new(ParentWin, [{style, Style}]),
     Li = wxListItem:new(),
+    Scale = observer_wx:get_scale(),
     AddListEntry = fun({Name, Align, DefSize}, Col) ->
 			   wxListItem:setText(Li, Name),
 			   wxListItem:setAlign(Li, Align),
 			   wxListCtrl:insertColumn(Grid, Col, Li),
-			   wxListCtrl:setColumnWidth(Grid, Col, DefSize),
+			   wxListCtrl:setColumnWidth(Grid, Col, DefSize*Scale),
 			   Col + 1
 		   end,
     lists:foldl(AddListEntry, 0, ColumnSpec),
diff --git a/lib/observer/src/cdv_term_cb.erl b/lib/observer/src/cdv_term_cb.erl
index 91de6449c4..85da1d227a 100644
--- a/lib/observer/src/cdv_term_cb.erl
+++ b/lib/observer/src/cdv_term_cb.erl
@@ -51,7 +51,7 @@ format_term_fun(Format,Term,Tab) ->
 	    try io_lib:format(Format,[Term]) of
 		Str -> {expand, plain_html(Str), Tab}
 	    catch error:badarg ->
-		    Warning = "This term can not be formatted with " ++ Format,
+		    Warning = "This term cannot be formatted with " ++ Format,
 		    observer_html_lib:warning(Warning)
             after
                     observer_lib:report_progress({ok,stop_pulse})
diff --git a/lib/observer/src/cdv_virtual_list_wx.erl b/lib/observer/src/cdv_virtual_list_wx.erl
index 2702301021..14877b7eab 100644
--- a/lib/observer/src/cdv_virtual_list_wx.erl
+++ b/lib/observer/src/cdv_virtual_list_wx.erl
@@ -132,11 +132,12 @@ create_list_box(Panel, Holder, Callback, Owner) ->
 				       end}
 				     ]),
     Li = wxListItem:new(),
+    Scale = observer_wx:get_scale(),
     AddListEntry = fun({Name, Align, DefSize}, Col) ->
 			   wxListItem:setText(Li, Name),
 			   wxListItem:setAlign(Li, Align),
 			   wxListCtrl:insertColumn(ListCtrl, Col, Li),
-			   wxListCtrl:setColumnWidth(ListCtrl, Col, DefSize),
+			   wxListCtrl:setColumnWidth(ListCtrl, Col, DefSize*Scale),
 			   Col + 1
 		   end,
     ListItems = Callback:col_spec(),
diff --git a/lib/observer/src/cdv_wx.erl b/lib/observer/src/cdv_wx.erl
index 1e9cef8952..7100cc8790 100644
--- a/lib/observer/src/cdv_wx.erl
+++ b/lib/observer/src/cdv_wx.erl
@@ -101,8 +101,9 @@ init(File0) ->
     {ok,CdvServer} = crashdump_viewer:start_link(),
 
     catch wxSystemOptions:setOption("mac.listctrl.always_use_generic", 1),
+    Scale = observer_wx:get_scale(),
     Frame = wxFrame:new(wx:null(), ?wxID_ANY, "Crashdump Viewer",
-			[{size, {850, 600}}, {style, ?wxDEFAULT_FRAME_STYLE}]),
+			[{size, {Scale*850, Scale*600}}, {style, ?wxDEFAULT_FRAME_STYLE}]),
     IconFile = filename:join(code:priv_dir(observer), "erlang_observer.png"),
     Icon = wxIcon:new(IconFile, [{type,?wxBITMAP_TYPE_PNG}]),
     wxFrame:setIcon(Frame, Icon),
@@ -458,10 +459,7 @@ maybe_warn_filename(FileName) ->
         true ->
             continue;
         false ->
-            DumpName = case os:getenv("ERL_CRASH_DUMP") of
-                           false -> filename:absname("erl_crash.dump");
-                           Name -> filename:absname(Name)
-                       end,
+            DumpName = filename:absname(os:getenv("ERL_CRASH_DUMP", "erl_crash.dump")),
             case filename:absname(FileName) of
                 DumpName ->
                     Warning =
diff --git a/lib/observer/src/observer_alloc_wx.erl b/lib/observer/src/observer_alloc_wx.erl
index 54e246f247..da47a30fb1 100644
--- a/lib/observer/src/observer_alloc_wx.erl
+++ b/lib/observer/src/observer_alloc_wx.erl
@@ -282,11 +282,12 @@ create_mem_info(Parent) ->
     Grid = wxListCtrl:new(Parent, [{style, Style}]),
 
     Li = wxListItem:new(),
+    Scale = observer_wx:get_scale(),
     AddListEntry = fun({Name, Align, DefSize}, Col) ->
 			   wxListItem:setText(Li, Name),
 			   wxListItem:setAlign(Li, Align),
 			   wxListCtrl:insertColumn(Grid, Col, Li),
-			   wxListCtrl:setColumnWidth(Grid, Col, DefSize),
+			   wxListCtrl:setColumnWidth(Grid, Col, DefSize*Scale),
 			   Col + 1
 		   end,
     ListItems = [{"Allocator Type",  ?wxLIST_FORMAT_LEFT,  200},
diff --git a/lib/observer/src/observer_app_wx.erl b/lib/observer/src/observer_app_wx.erl
index 2a481966da..8c3eef5411 100644
--- a/lib/observer/src/observer_app_wx.erl
+++ b/lib/observer/src/observer_app_wx.erl
@@ -117,16 +117,19 @@ init([Notebook, Parent, _Config]) ->
 
     UseGC = haveGC(),
     Version28 = ?wxMAJOR_VERSION =:= 2 andalso ?wxMINOR_VERSION =:= 8,
+    Scale = observer_wx:get_scale(),
     Font = case os:type() of
 	       {unix,_} when UseGC, Version28 ->
-		   wxFont:new(12,?wxFONTFAMILY_DECORATIVE,?wxFONTSTYLE_NORMAL,?wxFONTWEIGHT_NORMAL);
+		   wxFont:new(Scale * 12,?wxFONTFAMILY_DECORATIVE,?wxFONTSTYLE_NORMAL,?wxFONTWEIGHT_NORMAL);
 	       _ ->
-		   wxSystemSettings:getFont(?wxSYS_DEFAULT_GUI_FONT)
+		   Font0 = wxSystemSettings:getFont(?wxSYS_DEFAULT_GUI_FONT),
+           wxFont:setPointSize(Font0, Scale * wxFont:getPointSize(Font0)),
+           Font0
 	   end,
     SelCol   = wxSystemSettings:getColour(?wxSYS_COLOUR_HIGHLIGHT),
     GreyBrush = wxBrush:new({230,230,240}),
     SelBrush = wxBrush:new(SelCol),
-    LinkPen  = wxPen:new(SelCol, [{width, 2}]),
+    LinkPen  = wxPen:new(SelCol, [{width, Scale * 2}]),
     process_flag(trap_exit, true),
     {Panel, #state{parent=Parent,
 		   panel =Panel,
@@ -134,7 +137,7 @@ init([Notebook, Parent, _Config]) ->
 		   app_w =DrawingArea,
 		   usegc = UseGC,
 		   paint=#paint{font = Font,
-				pen  = wxPen:new({80,80,80}, [{width, 2}]),
+				pen  = wxPen:new({80,80,80}, [{width, Scale * 2}]),
 				brush= GreyBrush,
 				sel  = SelBrush,
 				links= LinkPen
diff --git a/lib/observer/src/observer_perf_wx.erl b/lib/observer/src/observer_perf_wx.erl
index 21c6d26f49..79271addf2 100644
--- a/lib/observer/src/observer_perf_wx.erl
+++ b/lib/observer/src/observer_perf_wx.erl
@@ -110,25 +110,26 @@ setup_graph_drawing(Panels) ->
     _ = [Do(Panel) || Panel <- Panels],
     UseGC = haveGC(),
     Version28 = ?wxMAJOR_VERSION =:= 2 andalso ?wxMINOR_VERSION =:= 8,
+    Scale = observer_wx:get_scale(),
     {Font, SmallFont}
 	= if UseGC, Version28 ->
 		  %% Def font is really small when using Graphics contexts in 2.8
 		  %% Hardcode it
-		  F = wxFont:new(12,?wxFONTFAMILY_DECORATIVE,?wxFONTSTYLE_NORMAL,?wxFONTWEIGHT_BOLD),
-		  SF = wxFont:new(10, ?wxFONTFAMILY_DECORATIVE, ?wxFONTSTYLE_NORMAL, ?wxFONTWEIGHT_NORMAL),
+		  F = wxFont:new(Scale * 12,?wxFONTFAMILY_DECORATIVE,?wxFONTSTYLE_NORMAL,?wxFONTWEIGHT_BOLD),
+		  SF = wxFont:new(Scale * 10, ?wxFONTFAMILY_DECORATIVE, ?wxFONTSTYLE_NORMAL, ?wxFONTWEIGHT_NORMAL),
 		  {F, SF};
 	     true ->
 		  DefFont = wxSystemSettings:getFont(?wxSYS_DEFAULT_GUI_FONT),
 		  DefSize = wxFont:getPointSize(DefFont),
 		  DefFamily = wxFont:getFamily(DefFont),
-		  F = wxFont:new(DefSize-1, DefFamily, ?wxFONTSTYLE_NORMAL, ?wxFONTWEIGHT_BOLD),
-		  SF = wxFont:new(DefSize-2, DefFamily, ?wxFONTSTYLE_NORMAL, ?wxFONTWEIGHT_NORMAL),
+		  F = wxFont:new(Scale * (DefSize-1), DefFamily, ?wxFONTSTYLE_NORMAL, ?wxFONTWEIGHT_BOLD),
+		  SF = wxFont:new(Scale * (DefSize-2), DefFamily, ?wxFONTSTYLE_NORMAL, ?wxFONTWEIGHT_NORMAL),
 		  {F, SF}
 	  end,
-    BlackPen = wxPen:new({0,0,0}, [{width, 1}]),
-    Pens = [wxPen:new(Col, [{width, 1}, {style, ?wxSOLID}])
+    BlackPen = wxPen:new({0,0,0}, [{width, Scale}]),
+    Pens = [wxPen:new(Col, [{width, Scale}, {style, ?wxSOLID}])
             || Col <- tuple_to_list(colors())],
-    DotPens = [wxPen:new(Col, [{width, 1}, {style, ?wxDOT}])
+    DotPens = [wxPen:new(Col, [{width, Scale}, {style, ?wxDOT}])
                || Col <- tuple_to_list(colors())],
     #paint{usegc = UseGC,
 	   font  = Font,
diff --git a/lib/observer/src/observer_port_wx.erl b/lib/observer/src/observer_port_wx.erl
index 445f3dd6b1..00cf1b5fba 100644
--- a/lib/observer/src/observer_port_wx.erl
+++ b/lib/observer/src/observer_port_wx.erl
@@ -96,11 +96,12 @@ init([Notebook, Parent, Config]) ->
 			   wxListCtrl:setColumnWidth(Grid, Col, DefSize),
 			   Col + 1
 		   end,
-    ListItems = [{"Id", ?wxLIST_FORMAT_LEFT,  150},
-		 {"Connected", ?wxLIST_FORMAT_LEFT, 150},
-		 {"Name", ?wxLIST_FORMAT_LEFT, 150},
-		 {"Controls", ?wxLIST_FORMAT_LEFT, 200},
-		 {"Slot", ?wxLIST_FORMAT_RIGHT, 50}],
+    Scale = observer_wx:get_scale(),
+    ListItems = [{"Id", ?wxLIST_FORMAT_LEFT,  Scale*150},
+		 {"Connected", ?wxLIST_FORMAT_LEFT, Scale*150},
+		 {"Name", ?wxLIST_FORMAT_LEFT, Scale*150},
+		 {"Controls", ?wxLIST_FORMAT_LEFT, Scale*200},
+		 {"Slot", ?wxLIST_FORMAT_RIGHT, Scale*50}],
     lists:foldl(AddListEntry, 0, ListItems),
     wxListItem:destroy(Li),
 
@@ -461,10 +462,11 @@ display_port_info(Parent, PortRec, Opened) ->
 do_display_port_info(Parent0, PortRec) ->
     Parent = observer_lib:get_wx_parent(Parent0),
     Title = "Port Info: " ++ PortRec#port.id_str,
+    Scale = observer_wx:get_scale(),
     Frame = wxMiniFrame:new(Parent, ?wxID_ANY, Title,
 			    [{style, ?wxSYSTEM_MENU bor ?wxCAPTION
 				  bor ?wxCLOSE_BOX bor ?wxRESIZE_BORDER},
-                             {size,{600,400}}]),
+                             {size,{Scale * 600, Scale * 400}}]),
     ScrolledWin = wxScrolledWindow:new(Frame,[{style,?wxHSCROLL bor ?wxVSCROLL}]),
     wxScrolledWindow:enableScrolling(ScrolledWin,true,true),
     wxScrolledWindow:setScrollbars(ScrolledWin,20,20,0,0),
diff --git a/lib/observer/src/observer_pro_wx.erl b/lib/observer/src/observer_pro_wx.erl
index 04e654a37e..4ab4a78462 100644
--- a/lib/observer/src/observer_pro_wx.erl
+++ b/lib/observer/src/observer_pro_wx.erl
@@ -163,13 +163,14 @@ create_list_box(Panel, Holder) ->
 			   wxListCtrl:setColumnWidth(ListCtrl, Col, DefSize),
 			   Col + 1
 		   end,
-    ListItems = [{"Pid", ?wxLIST_FORMAT_CENTRE,  120},
-		 {"Name or Initial Func", ?wxLIST_FORMAT_LEFT, 200},
-%%		 {"Time", ?wxLIST_FORMAT_CENTRE, 50},
-		 {"Reds", ?wxLIST_FORMAT_RIGHT, 100},
-		 {"Memory", ?wxLIST_FORMAT_RIGHT, 100},
-		 {"MsgQ",  ?wxLIST_FORMAT_RIGHT, 50},
-		 {"Current Function", ?wxLIST_FORMAT_LEFT,  200}],
+    Scale = observer_wx:get_scale(),
+    ListItems = [{"Pid", ?wxLIST_FORMAT_CENTRE,  Scale*120},
+		 {"Name or Initial Func", ?wxLIST_FORMAT_LEFT, Scale*200},
+%%		 {"Time", ?wxLIST_FORMAT_CENTRE, Scale*50},
+		 {"Reds", ?wxLIST_FORMAT_RIGHT, Scale*100},
+		 {"Memory", ?wxLIST_FORMAT_RIGHT, Scale*100},
+		 {"MsgQ",  ?wxLIST_FORMAT_RIGHT, Scale*50},
+		 {"Current Function", ?wxLIST_FORMAT_LEFT,  Scale*200}],
     lists:foldl(AddListEntry, 0, ListItems),
     wxListItem:destroy(Li),
 
diff --git a/lib/observer/src/observer_procinfo.erl b/lib/observer/src/observer_procinfo.erl
index f436886735..bd5fed0951 100644
--- a/lib/observer/src/observer_procinfo.erl
+++ b/lib/observer/src/observer_procinfo.erl
@@ -59,8 +59,9 @@ init([Pid, ParentFrame, Parent]) ->
 		  {registered_name, Registered} -> io_lib:format("~tp (~p)",[Registered, Pid]);
 		  undefined -> throw(process_undefined)
 	      end,
+    Scale = observer_wx:get_scale(),
 	Frame=wxFrame:new(ParentFrame, ?wxID_ANY, [atom_to_list(node(Pid)), $:, Title],
-			  [{style, ?wxDEFAULT_FRAME_STYLE}, {size, {850,600}}]),
+			  [{style, ?wxDEFAULT_FRAME_STYLE}, {size, {Scale * 850, Scale * 600}}]),
 	MenuBar = wxMenuBar:new(),
 	create_menus(MenuBar),
 	wxFrame:setMenuBar(Frame, MenuBar),
@@ -245,12 +246,13 @@ init_dict_page(Parent, Pid, Table) ->
 init_stack_page(Parent, Pid) ->
     LCtrl = wxListCtrl:new(Parent, [{style, ?wxLC_REPORT bor ?wxLC_HRULES}]),
     Li = wxListItem:new(),
+    Scale = observer_wx:get_scale(),
     wxListItem:setText(Li, "Module:Function/Arg"),
     wxListCtrl:insertColumn(LCtrl, 0, Li),
-    wxListCtrl:setColumnWidth(LCtrl, 0, 300),
+    wxListCtrl:setColumnWidth(LCtrl, 0, Scale * 300),
     wxListItem:setText(Li, "File:LineNumber"),
     wxListCtrl:insertColumn(LCtrl, 1, Li),
-    wxListCtrl:setColumnWidth(LCtrl, 1, 300),
+    wxListCtrl:setColumnWidth(LCtrl, 1, Scale * 300),
     wxListItem:destroy(Li),
     Update = fun() ->
 		     case observer_wx:try_rpc(node(Pid), erlang, process_info,
diff --git a/lib/observer/src/observer_trace_wx.erl b/lib/observer/src/observer_trace_wx.erl
index 2c3b46a3a1..f458c8c34a 100644
--- a/lib/observer/src/observer_trace_wx.erl
+++ b/lib/observer/src/observer_trace_wx.erl
@@ -188,8 +188,9 @@ create_proc_port_view(Parent) ->
 			   wxListCtrl:setColumnWidth(Procs, Col, DefSize),
 			   Col + 1
 		   end,
-    ProcListItems = [{"Process Id",    ?wxLIST_FORMAT_CENTER,  120},
-		     {"Trace Options", ?wxLIST_FORMAT_LEFT, 300}],
+    Scale = observer_wx:get_scale(),
+    ProcListItems = [{"Process Id",    ?wxLIST_FORMAT_CENTER,  Scale*120},
+		     {"Trace Options", ?wxLIST_FORMAT_LEFT, Scale*300}],
     lists:foldl(AddProc, 0, ProcListItems),
 
     AddPort = fun({Name, Align, DefSize}, Col) ->
@@ -199,8 +200,8 @@ create_proc_port_view(Parent) ->
 			   wxListCtrl:setColumnWidth(Ports, Col, DefSize),
 			   Col + 1
 		   end,
-    PortListItems = [{"Port Id",    ?wxLIST_FORMAT_CENTER,  120},
-		     {"Trace Options", ?wxLIST_FORMAT_LEFT, 300}],
+    PortListItems = [{"Port Id",    ?wxLIST_FORMAT_CENTER,  Scale*120},
+		     {"Trace Options", ?wxLIST_FORMAT_LEFT, Scale*300}],
     lists:foldl(AddPort, 0, PortListItems),
 
     wxListItem:destroy(Li),
@@ -242,14 +243,15 @@ create_matchspec_view(Parent) ->
     Funcs   = wxListCtrl:new(Splitter, [{winid, ?FUNCS_WIN}, {style, Style}]),
     Li = wxListItem:new(),
 
+    Scale = observer_wx:get_scale(),
     wxListItem:setText(Li, "Modules"),
     wxListCtrl:insertColumn(Modules, 0, Li),
     wxListItem:setText(Li, "Functions"),
     wxListCtrl:insertColumn(Funcs, 0, Li),
-    wxListCtrl:setColumnWidth(Funcs, 0, 150),
+    wxListCtrl:setColumnWidth(Funcs, 0, Scale*150),
     wxListItem:setText(Li, "Match Spec"),
     wxListCtrl:insertColumn(Funcs, 1, Li),
-    wxListCtrl:setColumnWidth(Funcs, 1, 300),
+    wxListCtrl:setColumnWidth(Funcs, 1, Scale*300),
     wxListItem:destroy(Li),
 
     wxSplitterWindow:setSashGravity(Splitter, 0.0),
@@ -969,7 +971,8 @@ output_file(true, true, Opts) ->
 
 create_logwindow(_Parent, false) -> {false, false};
 create_logwindow(Parent, true) ->
-    LogWin = wxFrame:new(Parent, ?LOG_WIN, "Trace Log", [{size, {750, 800}}]),
+    Scale = observer_wx:get_scale(),
+    LogWin = wxFrame:new(Parent, ?LOG_WIN, "Trace Log", [{size, {750*Scale, 800*Scale}}]),
     MB = wxMenuBar:new(),
     File = wxMenu:new(),
     wxMenu:append(File, ?LOG_CLEAR, "Clear Log\tCtrl-C"),
diff --git a/lib/observer/src/observer_traceoptions_wx.erl b/lib/observer/src/observer_traceoptions_wx.erl
index ea292b92af..514d55ff24 100644
--- a/lib/observer/src/observer_traceoptions_wx.erl
+++ b/lib/observer/src/observer_traceoptions_wx.erl
@@ -167,9 +167,10 @@ select_nodes(Parent, Nodes) ->
     check_selector(Parent, Choices).
 
 module_selector(Parent, Node) ->
+    Scale = observer_wx:get_scale(),
     Dialog = wxDialog:new(Parent, ?wxID_ANY, "Select Module or Event",
 			  [{style, ?wxDEFAULT_DIALOG_STYLE bor ?wxRESIZE_BORDER},
-			   {size, {400, 400}}]),
+			   {size, {400*Scale, 400*Scale}}]),
     Panel = wxPanel:new(Dialog),
     PanelSz = wxBoxSizer:new(?wxVERTICAL),
     MainSz  = wxBoxSizer:new(?wxVERTICAL),
@@ -237,9 +238,10 @@ function_selector(Parent, Node, Module) ->
     end.
 
 check_selector(Parent, ParsedChoices) ->
+    Scale = observer_wx:get_scale(),
     Dialog = wxDialog:new(Parent, ?wxID_ANY, "Trace Functions",
 			  [{style, ?wxDEFAULT_DIALOG_STYLE bor ?wxRESIZE_BORDER},
-			   {size, {400, 400}}]),
+			   {size, {400*Scale, 400*Scale}}]),
 
     Panel = wxPanel:new(Dialog),
     PanelSz = wxBoxSizer:new(?wxVERTICAL),
@@ -331,9 +333,10 @@ select_matchspec(Pid, Parent, AllMatchSpecs, Key) ->
 	    {value,{Key,MSs0},Rest} -> {MSs0,Rest};
 	    false -> {[],AllMatchSpecs}
 	end,
+    Scale = observer_wx:get_scale(),
     Dialog = wxDialog:new(Parent, ?wxID_ANY, "Trace Match Specifications",
 			  [{style, ?wxDEFAULT_DIALOG_STYLE bor ?wxRESIZE_BORDER},
-			   {size, {400, 400}}]),
+			   {size, {400*Scale, 400*Scale}}]),
 
     Panel = wxPanel:new(Dialog),
     PanelSz = wxBoxSizer:new(?wxVERTICAL),
diff --git a/lib/observer/src/observer_tv_table.erl b/lib/observer/src/observer_tv_table.erl
index d6dcee2cda..7bd67a0f0b 100644
--- a/lib/observer/src/observer_tv_table.erl
+++ b/lib/observer/src/observer_tv_table.erl
@@ -99,7 +99,8 @@ init([Parent, Opts]) ->
 		ets -> "TV Ets: " ++ Title0;
 		mnesia -> "TV Mnesia: " ++ Title0
 	    end,
-    Frame = wxFrame:new(Parent, ?wxID_ANY, Title, [{size, {800, 600}}]),
+    Scale = observer_wx:get_scale(),
+    Frame = wxFrame:new(Parent, ?wxID_ANY, Title, [{size, {Scale * 800, Scale * 600}}]),
     IconFile = filename:join(code:priv_dir(observer), "erlang_observer.png"),
     Icon = wxIcon:new(IconFile, [{type,?wxBITMAP_TYPE_PNG}]),
     wxFrame:setIcon(Frame, Icon),
diff --git a/lib/observer/src/observer_tv_wx.erl b/lib/observer/src/observer_tv_wx.erl
index 814f3a1260..9743a6ed42 100644
--- a/lib/observer/src/observer_tv_wx.erl
+++ b/lib/observer/src/observer_tv_wx.erl
@@ -87,12 +87,13 @@ init([Notebook, Parent, Config]) ->
 			   wxListCtrl:setColumnWidth(Grid, Col, DefSize),
 			   Col + 1
 		   end,
-    ListItems = [{"Table Name", ?wxLIST_FORMAT_LEFT,  200},
-		 {"Objects",    ?wxLIST_FORMAT_RIGHT, 100},
-		 {"Size (kB)",  ?wxLIST_FORMAT_RIGHT, 100},
-		 {"Owner Pid",  ?wxLIST_FORMAT_CENTER, 150},
-		 {"Owner Name", ?wxLIST_FORMAT_LEFT,  200},
-		 {"Table Id",   ?wxLIST_FORMAT_LEFT, 250}
+    Scale = observer_wx:get_scale(),
+    ListItems = [{"Table Name", ?wxLIST_FORMAT_LEFT,  Scale*200},
+		 {"Objects",    ?wxLIST_FORMAT_RIGHT, Scale*100},
+		 {"Size (kB)",  ?wxLIST_FORMAT_RIGHT, Scale*100},
+		 {"Owner Pid",  ?wxLIST_FORMAT_CENTER, Scale*150},
+		 {"Owner Name", ?wxLIST_FORMAT_LEFT,  Scale*200},
+		 {"Table Id",   ?wxLIST_FORMAT_LEFT, Scale*250}
 		],
     lists:foldl(AddListEntry, 0, ListItems),
     wxListItem:destroy(Li),
@@ -147,7 +148,7 @@ handle_event(#wx{event=#wxList{type=command_list_item_activated,
 	     State=#state{holder=Holder, node=Node, opts=#opts{type=Type}, grid=Grid}) ->
     case get_table(Holder, Index) of
         #tab{protection=private} ->
-            self() ! {error, "Table has 'private' protection and can not be read"};
+            self() ! {error, "Table has 'private' protection and cannot be read"};
         #tab{}=Table ->
 	    observer_tv_table:start_link(Grid, [{node,Node}, {type,Type}, {table,Table}]);
         _ -> ignore
@@ -187,7 +188,7 @@ handle_event(#wx{id=?ID_SHOW_TABLE},
 	R when is_integer(R) ->
 	    case get_table(Holder, R) of
 		#tab{protection=private} ->
-		    self() ! {error, "Table has 'private' protection and can not be read"};
+		    self() ! {error, "Table has 'private' protection and cannot be read"};
                 #tab{}=Table ->
 		    observer_tv_table:start_link(Grid, [{node,Node}, {type,Type}, {table,Table}]);
                 _ -> ignore
diff --git a/lib/observer/src/observer_wx.erl b/lib/observer/src/observer_wx.erl
index 453e3bdc2d..de7d821030 100644
--- a/lib/observer/src/observer_wx.erl
+++ b/lib/observer/src/observer_wx.erl
@@ -22,7 +22,7 @@
 
 -export([start/0, stop/0]).
 -export([create_menus/2, get_attrib/1, get_tracer/0, get_active_node/0, get_menubar/0,
-	 set_status/1, create_txt_dialog/4, try_rpc/4, return_to_localnode/2]).
+     get_scale/0, set_status/1, create_txt_dialog/4, try_rpc/4, return_to_localnode/2]).
 
 -export([init/1, handle_event/2, handle_cast/2, terminate/2, code_change/3,
 	 handle_call/3, handle_info/2, check_page_title/1]).
@@ -91,14 +91,24 @@ get_active_node() ->
 get_menubar() ->
     wx_object:call(observer, get_menubar).
 
+get_scale() ->
+    ScaleStr = os:getenv("OBSERVER_SCALE", "1"),
+    try list_to_integer(ScaleStr) of
+        Scale when Scale < 1 -> 1;
+        Scale -> Scale
+    catch _:_ ->
+        1
+    end.
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 init(_Args) ->
     register(observer, self()),
     wx:new(),
     catch wxSystemOptions:setOption("mac.listctrl.always_use_generic", 1),
+    Scale = get_scale(),
     Frame = wxFrame:new(wx:null(), ?wxID_ANY, "Observer",
-			[{size, {850, 600}}, {style, ?wxDEFAULT_FRAME_STYLE}]),
+			[{size, {Scale * 850, Scale * 600}}, {style, ?wxDEFAULT_FRAME_STYLE}]),
     IconFile = filename:join(code:priv_dir(observer), "erlang_observer.png"),
     Icon = wxIcon:new(IconFile, [{type,?wxBITMAP_TYPE_PNG}]),
     wxFrame:setIcon(Frame, Icon),
@@ -771,7 +781,11 @@ ensure_sasl_started(Node) ->
 
 ensure_mf_h_handler_used(Node) ->
    %% is log_mf_h used ?
-   Handlers = rpc:block_call(Node, gen_event, which_handlers, [error_logger]),
+   Handlers =
+        case rpc:block_call(Node, gen_event, which_handlers, [error_logger]) of
+            {badrpc,{'EXIT',noproc}} -> []; % OTP-21+ and no event handler exists
+            Hs -> Hs
+        end,
    case lists:any(fun(L)-> L == log_mf_h end, Handlers) of
        false -> throw("Error: log_mf_h handler not used in sasl."),
                 error;
@@ -806,7 +820,7 @@ is_rb_compatible(Node) ->
 
 is_rb_server_running(Node, LogState) ->
    %% If already started, somebody else may use it.
-   %% We can not use it too, as far log file would be overriden. Not fair.
+   %% We cannot use it too, as far log file would be overriden. Not fair.
    case rpc:block_call(Node, erlang, whereis, [rb_server]) of
        Pid when is_pid(Pid), (LogState == false) ->
 	   throw("Error: rb_server is already started and maybe used by someone.");
diff --git a/lib/observer/test/crashdump_helper.erl b/lib/observer/test/crashdump_helper.erl
index d5d3649525..84ed99afa5 100644
--- a/lib/observer/test/crashdump_helper.erl
+++ b/lib/observer/test/crashdump_helper.erl
@@ -24,7 +24,7 @@
          create_binaries/0,create_sub_binaries/1,
          dump_persistent_terms/0,
          create_persistent_terms/0]).
--compile(r18).
+-compile(r20).
 -include_lib("common_test/include/ct.hrl").
 
 n1_proc(N2,Creator) ->
@@ -204,5 +204,4 @@ dump_persistent_terms() ->
 create_persistent_terms() ->
     persistent_term:put({?MODULE,first}, {pid,42.0}),
     persistent_term:put({?MODULE,second}, [1,2,3]),
-    persistent_term:get().
-
+    {persistent_term:get({?MODULE,first}),persistent_term:get({?MODULE,second})}.
diff --git a/lib/observer/test/crashdump_viewer_SUITE.erl b/lib/observer/test/crashdump_viewer_SUITE.erl
index 8c5e618f4a..31cf7011d4 100644
--- a/lib/observer/test/crashdump_viewer_SUITE.erl
+++ b/lib/observer/test/crashdump_viewer_SUITE.erl
@@ -615,9 +615,8 @@ special(File,Procs) ->
 
 	    #proc{dict=Dict} = ProcDetails,
             %% io:format("~p\n", [Dict]),
-            Pts1 = crashdump_helper:create_persistent_terms(),
-            Pts2 = proplists:get_value(pts,Dict),
-            true = lists:sort(Pts1) =:= lists:sort(Pts2),
+            Pts = crashdump_helper:create_persistent_terms(),
+            Pts = proplists:get_value(pts,Dict),
             io:format("  persistent terms ok",[]),
             ok;
 	_ ->
diff --git a/lib/observer/test/crashdump_viewer_SUITE_data/old_format.dump b/lib/observer/test/crashdump_viewer_SUITE_data/old_format.dump
index 2c8944fa9d..0b30fdf2f1 100644
--- a/lib/observer/test/crashdump_viewer_SUITE_data/old_format.dump
+++ b/lib/observer/test/crashdump_viewer_SUITE_data/old_format.dump
@@ -10,7 +10,7 @@ Compiled on Wed Dec  4 11:11:21 2002
 Process Information
 --------------------------------------------------
 <0.0.0> Waiting. Registered as: init
-Spawned as: otp_ring0:start/2
+Spawned as: erl_init:start/2
 Message buffer data: 4 words
 Link list: [<0.5.0>,<0.4.0>,<0.2.0>]
 Reductions 3125 stack+heap 610 old_heap_sz=233 
@@ -68,7 +68,7 @@ y(3)     [gen_event,<0.1.0>,<0.1.0>,{local,error_logger},[],[],[]]
 Spawned as: proc_lib:init_p/5
 Message buffer data: 4 words
 Link list: [<0.7.0>,<0.0.0>]
-Dictionary: [{'$initial_call',{gen,init_it,[gen_server,<0.1.0>,<0.1.0>,{local,application_controller},application_controller,{application,kernel,[{description,"ERTS  CXC 138 10"},{vsn,"2.6.3.15"},{id,[]},{modules,[application,application_controller,application_master,application_starter,auth,code,code_aux,code_server,code_server_int,dist_util,erl_boot_server,erl_distribution,erl_open_port,erl_prim_loader,erl_reply,erlang,error_handler,error_logger,file,global,global_group,global_search,group,heart,inet6_tcp,inet6_tcp_dist,inet6_udp,inet_config,inet_hosts,inet_gethost_native,inet_tcp_dist,otp_pre_init,init,kernel,kernel_config,net,net_adm,net_kernel,os,ram_file,rpc,user,user_drv,user_sup,disk_log,disk_log_1,disk_log_server,disk_log_sup,dist_ac,erl_atom_cache,erl_ddll,erl_epmd,erl_external,erts_debug,fixtable_server,gen_tcp,gen_udp,prim_inet,inet,inet_db,inet_dns,inet_parse,inet_res,inet_tcp,inet_udp,pg2,seq_trace,socks5,socks5_auth,socks5_tcp,socks5_udp,wrap_log_reader,otp_ring0]},{registered,[application_controller,erl_reply,auth,boot_server,code_server,disk_log_server,disk_log_sup,erl_prim_loader,error_logger,file_server,fixtable_server,global_group,global_name_server,heart,init,kernel_config,kernel_sup,net_kernel,net_sup,rex,user,os_server,ddll_server,erl_epmd,inet_db,pg2]},{applications,[]},{included_applications,[]},{env,[{error_logger,tty}]},{start_phases,undefined},{maxT,infinity},{maxP,infinity},{mod,{kernel,[]}}]},[]]}},{'$ancestors',[<0.1.0>]}]
+Dictionary: [{'$initial_call',{gen,init_it,[gen_server,<0.1.0>,<0.1.0>,{local,application_controller},application_controller,{application,kernel,[{description,"ERTS  CXC 138 10"},{vsn,"2.6.3.15"},{id,[]},{modules,[application,application_controller,application_master,application_starter,auth,code,code_aux,code_server,code_server_int,dist_util,erl_boot_server,erl_distribution,erl_open_port,erl_prim_loader,erl_reply,erlang,error_handler,error_logger,file,global,global_group,global_search,group,heart,inet6_tcp,inet6_tcp_dist,inet6_udp,inet_config,inet_hosts,inet_gethost_native,inet_tcp_dist,otp_pre_init,init,kernel,kernel_config,net,net_adm,net_kernel,os,ram_file,rpc,user,user_drv,user_sup,disk_log,disk_log_1,disk_log_server,disk_log_sup,dist_ac,erl_atom_cache,erl_ddll,erl_epmd,erl_external,erts_debug,fixtable_server,gen_tcp,gen_udp,prim_inet,inet,inet_db,inet_dns,inet_parse,inet_res,inet_tcp,inet_udp,pg2,seq_trace,socks5,socks5_auth,socks5_tcp,socks5_udp,wrap_log_reader,erl_init]},{registered,[application_controller,erl_reply,auth,boot_server,code_server,disk_log_server,disk_log_sup,erl_prim_loader,error_logger,file_server,fixtable_server,global_group,global_name_server,heart,init,kernel_config,kernel_sup,net_kernel,net_sup,rex,user,os_server,ddll_server,erl_epmd,inet_db,pg2]},{applications,[]},{included_applications,[]},{env,[{error_logger,tty}]},{start_phases,undefined},{maxT,infinity},{maxP,infinity},{mod,{kernel,[]}}]},[]]}},{'$ancestors',[<0.1.0>]}]
 Reductions 527 stack+heap 1597 old_heap_sz=0 
 Heap unused=833 OldHeap unused=0
 Stack dump:
@@ -88,13 +88,13 @@ y(5)     <0.1.0>
 y(0)     Catch 0x33480C (proc_lib:init_p/5 + 164)
 y(1)     gen
 y(2)     init_it
-y(3)     [gen_server,<0.1.0>,<0.1.0>,{local,application_controller},application_controller,{application,kernel,[{description,"ERTS  CXC 138 10"},{vsn,"2.6.3.15"},{id,[]},{modules,[application,application_controller,application_master,application_starter,auth,code,code_aux,code_server,code_server_int,dist_util,erl_boot_server,erl_distribution,erl_open_port,erl_prim_loader,erl_reply,erlang,error_handler,error_logger,file,global,global_group,global_search,group,heart,inet6_tcp,inet6_tcp_dist,inet6_udp,inet_config,inet_hosts,inet_gethost_native,inet_tcp_dist,otp_pre_init,init,kernel,kernel_config,net,net_adm,net_kernel,os,ram_file,rpc,user,user_drv,user_sup,disk_log,disk_log_1,disk_log_server,disk_log_sup,dist_ac,erl_atom_cache,erl_ddll,erl_epmd,erl_external,erts_debug,fixtable_server,gen_tcp,gen_udp,prim_inet,inet,inet_db,inet_dns,inet_parse,inet_res,inet_tcp,inet_udp,pg2,seq_trace,socks5,socks5_auth,socks5_tcp,socks5_udp,wrap_log_reader,otp_ring0]},{registered,[application_controller,erl_reply,auth,boot_server,code_server,disk_log_server,disk_log_sup,erl_prim_loader,error_logger,file_server,fixtable_server,global_group,global_name_server,heart,init,kernel_config,kernel_sup,net_kernel,net_sup,rex,user,os_server,ddll_server,erl_epmd,inet_db,pg2]},{applications,[]},{included_applications,[]},{env,[{error_logger,tty}]},{start_phases,undefined},{maxT,infinity},{maxP,infinity},{mod,{kernel,[]}}]},[]]
+y(3)     [gen_server,<0.1.0>,<0.1.0>,{local,application_controller},application_controller,{application,kernel,[{description,"ERTS  CXC 138 10"},{vsn,"2.6.3.15"},{id,[]},{modules,[application,application_controller,application_master,application_starter,auth,code,code_aux,code_server,code_server_int,dist_util,erl_boot_server,erl_distribution,erl_open_port,erl_prim_loader,erl_reply,erlang,error_handler,error_logger,file,global,global_group,global_search,group,heart,inet6_tcp,inet6_tcp_dist,inet6_udp,inet_config,inet_hosts,inet_gethost_native,inet_tcp_dist,otp_pre_init,init,kernel,kernel_config,net,net_adm,net_kernel,os,ram_file,rpc,user,user_drv,user_sup,disk_log,disk_log_1,disk_log_server,disk_log_sup,dist_ac,erl_atom_cache,erl_ddll,erl_epmd,erl_external,erts_debug,fixtable_server,gen_tcp,gen_udp,prim_inet,inet,inet_db,inet_dns,inet_parse,inet_res,inet_tcp,inet_udp,pg2,seq_trace,socks5,socks5_auth,socks5_tcp,socks5_udp,wrap_log_reader,erl_init]},{registered,[application_controller,erl_reply,auth,boot_server,code_server,disk_log_server,disk_log_sup,erl_prim_loader,error_logger,file_server,fixtable_server,global_group,global_name_server,heart,init,kernel_config,kernel_sup,net_kernel,net_sup,rex,user,os_server,ddll_server,erl_epmd,inet_db,pg2]},{applications,[]},{included_applications,[]},{env,[{error_logger,tty}]},{start_phases,undefined},{maxT,infinity},{maxP,infinity},{mod,{kernel,[]}}]},[]]
 --------------------------------------------------
 <0.7.0> Waiting.
 Spawned as: proc_lib:init_p/5
 Message buffer data: 0 words
 Link list: [<0.8.0>,<0.5.0>]
-Dictionary: [{'$initial_call',{application_master,init,[<0.5.0>,<0.6.0>,{appl_data,kernel,[application_controller,erl_reply,auth,boot_server,code_server,disk_log_server,disk_log_sup,erl_prim_loader,error_logger,file_server,fixtable_server,global_group,global_name_server,heart,init,kernel_config,kernel_sup,net_kernel,net_sup,rex,user,os_server,ddll_server,erl_epmd,inet_db,pg2],undefined,{kernel,[]},[application,application_controller,application_master,application_starter,auth,code,code_aux,code_server,code_server_int,dist_util,erl_boot_server,erl_distribution,erl_open_port,erl_prim_loader,erl_reply,erlang,error_handler,error_logger,file,global,global_group,global_search,group,heart,inet6_tcp,inet6_tcp_dist,inet6_udp,inet_config,inet_hosts,inet_gethost_native,inet_tcp_dist,otp_pre_init,init,kernel,kernel_config,net,net_adm,net_kernel,os,ram_file,rpc,user,user_drv,user_sup,disk_log,disk_log_1,disk_log_server,disk_log_sup,dist_ac,erl_atom_cache,erl_ddll,erl_epmd,erl_external,erts_debug,fixtable_server,gen_tcp,gen_udp,prim_inet,inet,inet_db,inet_dns,inet_parse,inet_res,inet_tcp,inet_udp,pg2,seq_trace,socks5,socks5_auth,socks5_tcp,socks5_udp,wrap_log_reader,otp_ring0],[],infinity,infinity},normal]}},{'$ancestors',[<0.6.0>]}]
+Dictionary: [{'$initial_call',{application_master,init,[<0.5.0>,<0.6.0>,{appl_data,kernel,[application_controller,erl_reply,auth,boot_server,code_server,disk_log_server,disk_log_sup,erl_prim_loader,error_logger,file_server,fixtable_server,global_group,global_name_server,heart,init,kernel_config,kernel_sup,net_kernel,net_sup,rex,user,os_server,ddll_server,erl_epmd,inet_db,pg2],undefined,{kernel,[]},[application,application_controller,application_master,application_starter,auth,code,code_aux,code_server,code_server_int,dist_util,erl_boot_server,erl_distribution,erl_open_port,erl_prim_loader,erl_reply,erlang,error_handler,error_logger,file,global,global_group,global_search,group,heart,inet6_tcp,inet6_tcp_dist,inet6_udp,inet_config,inet_hosts,inet_gethost_native,inet_tcp_dist,otp_pre_init,init,kernel,kernel_config,net,net_adm,net_kernel,os,ram_file,rpc,user,user_drv,user_sup,disk_log,disk_log_1,disk_log_server,disk_log_sup,dist_ac,erl_atom_cache,erl_ddll,erl_epmd,erl_external,erts_debug,fixtable_server,gen_tcp,gen_udp,prim_inet,inet,inet_db,inet_dns,inet_parse,inet_res,inet_tcp,inet_udp,pg2,seq_trace,socks5,socks5_auth,socks5_tcp,socks5_udp,wrap_log_reader,erl_init],[],infinity,infinity},normal]}},{'$ancestors',[<0.6.0>]}]
 Reductions 45 stack+heap 377 old_heap_sz=377 
 Heap unused=306 OldHeap unused=377
 Stack dump:
@@ -103,14 +103,14 @@ cp = 0x33480c (proc_lib:init_p/5 + 164)
 arity = 0
 
 347174   Return addr 0x33480C (proc_lib:init_p/5 + 164)
-y(0)     {state,<0.8.0>,{appl_data,kernel,[application_controller,erl_reply,auth,boot_server,code_server,disk_log_server,disk_log_sup,erl_prim_loader,error_logger,file_server,fixtable_server,global_group,global_name_server,heart,init,kernel_config,kernel_sup,net_kernel,net_sup,rex,user,os_server,ddll_server,erl_epmd,inet_db,pg2],undefined,{kernel,[]},[application,application_controller,application_master,application_starter,auth,code,code_aux,code_server,code_server_int,dist_util,erl_boot_server,erl_distribution,erl_open_port,erl_prim_loader,erl_reply,erlang,error_handler,error_logger,file,global,global_group,global_search,group,heart,inet6_tcp,inet6_tcp_dist,inet6_udp,inet_config,inet_hosts,inet_gethost_native,inet_tcp_dist,otp_pre_init,init,kernel,kernel_config,net,net_adm,net_kernel,os,ram_file,rpc,user,user_drv,user_sup,disk_log,disk_log_1,disk_log_server,disk_log_sup,dist_ac,erl_atom_cache,erl_ddll,erl_epmd,erl_external,erts_debug,fixtable_server,gen_tcp,gen_udp,prim_inet,inet,inet_db,inet_dns,inet_parse,inet_res,inet_tcp,inet_udp,pg2,seq_trace,socks5,socks5_auth,socks5_tcp,socks5_udp,wrap_log_reader,otp_ring0],[],infinity,infinity},[],0,<0.0.0>}
+y(0)     {state,<0.8.0>,{appl_data,kernel,[application_controller,erl_reply,auth,boot_server,code_server,disk_log_server,disk_log_sup,erl_prim_loader,error_logger,file_server,fixtable_server,global_group,global_name_server,heart,init,kernel_config,kernel_sup,net_kernel,net_sup,rex,user,os_server,ddll_server,erl_epmd,inet_db,pg2],undefined,{kernel,[]},[application,application_controller,application_master,application_starter,auth,code,code_aux,code_server,code_server_int,dist_util,erl_boot_server,erl_distribution,erl_open_port,erl_prim_loader,erl_reply,erlang,error_handler,error_logger,file,global,global_group,global_search,group,heart,inet6_tcp,inet6_tcp_dist,inet6_udp,inet_config,inet_hosts,inet_gethost_native,inet_tcp_dist,otp_pre_init,init,kernel,kernel_config,net,net_adm,net_kernel,os,ram_file,rpc,user,user_drv,user_sup,disk_log,disk_log_1,disk_log_server,disk_log_sup,dist_ac,erl_atom_cache,erl_ddll,erl_epmd,erl_external,erts_debug,fixtable_server,gen_tcp,gen_udp,prim_inet,inet,inet_db,inet_dns,inet_parse,inet_res,inet_tcp,inet_udp,pg2,seq_trace,socks5,socks5_auth,socks5_tcp,socks5_udp,wrap_log_reader,erl_init],[],infinity,infinity},[],0,<0.0.0>}
 y(1)     <0.5.0>
 
 347180   Return addr 0xFCEC8 (<terminate process normally>)
 y(0)     Catch 0x33480C (proc_lib:init_p/5 + 164)
 y(1)     application_master
 y(2)     init
-y(3)     [<0.5.0>,<0.6.0>,{appl_data,kernel,[application_controller,erl_reply,auth,boot_server,code_server,disk_log_server,disk_log_sup,erl_prim_loader,error_logger,file_server,fixtable_server,global_group,global_name_server,heart,init,kernel_config,kernel_sup,net_kernel,net_sup,rex,user,os_server,ddll_server,erl_epmd,inet_db,pg2],undefined,{kernel,[]},[application,application_controller,application_master,application_starter,auth,code,code_aux,code_server,code_server_int,dist_util,erl_boot_server,erl_distribution,erl_open_port,erl_prim_loader,erl_reply,erlang,error_handler,error_logger,file,global,global_group,global_search,group,heart,inet6_tcp,inet6_tcp_dist,inet6_udp,inet_config,inet_hosts,inet_gethost_native,inet_tcp_dist,otp_pre_init,init,kernel,kernel_config,net,net_adm,net_kernel,os,ram_file,rpc,user,user_drv,user_sup,disk_log,disk_log_1,disk_log_server,disk_log_sup,dist_ac,erl_atom_cache,erl_ddll,erl_epmd,erl_external,erts_debug,fixtable_server,gen_tcp,gen_udp,prim_inet,inet,inet_db,inet_dns,inet_parse,inet_res,inet_tcp,inet_udp,pg2,seq_trace,socks5,socks5_auth,socks5_tcp,socks5_udp,wrap_log_reader,otp_ring0],[],infinity,infinity},normal]
+y(3)     [<0.5.0>,<0.6.0>,{appl_data,kernel,[application_controller,erl_reply,auth,boot_server,code_server,disk_log_server,disk_log_sup,erl_prim_loader,error_logger,file_server,fixtable_server,global_group,global_name_server,heart,init,kernel_config,kernel_sup,net_kernel,net_sup,rex,user,os_server,ddll_server,erl_epmd,inet_db,pg2],undefined,{kernel,[]},[application,application_controller,application_master,application_starter,auth,code,code_aux,code_server,code_server_int,dist_util,erl_boot_server,erl_distribution,erl_open_port,erl_prim_loader,erl_reply,erlang,error_handler,error_logger,file,global,global_group,global_search,group,heart,inet6_tcp,inet6_tcp_dist,inet6_udp,inet_config,inet_hosts,inet_gethost_native,inet_tcp_dist,otp_pre_init,init,kernel,kernel_config,net,net_adm,net_kernel,os,ram_file,rpc,user,user_drv,user_sup,disk_log,disk_log_1,disk_log_server,disk_log_sup,dist_ac,erl_atom_cache,erl_ddll,erl_epmd,erl_external,erts_debug,fixtable_server,gen_tcp,gen_udp,prim_inet,inet,inet_db,inet_dns,inet_parse,inet_res,inet_tcp,inet_udp,pg2,seq_trace,socks5,socks5_auth,socks5_tcp,socks5_udp,wrap_log_reader,erl_init],[],infinity,infinity},normal]
 --------------------------------------------------
 <0.8.0> Waiting.
 Spawned as: application_master:start_it/4
@@ -652,7 +652,7 @@ Not alive
 
 Loaded Modules Information
 --------------------------------------------------
-otp_ring0 448
+erl_init 448
 init 28000
 prim_inet 34800
 erl_prim_loader 14187
@@ -1202,7 +1202,7 @@ udp_error
 inet_async
 inet_reply
 empty_out_q
-otp_ring0
+erl_init
 boot
 init
 run
@@ -1285,7 +1285,7 @@ sleep
 start_prim_loader
 erl_prim_loader
 set_path
-'can not start loader'
+'cannot start loader'
 add_to_kernel
 prim_load_flags
 '-loader'
@@ -1304,7 +1304,7 @@ path_flags
 '-pz'
 get_boot
 not_found
-'can not get bootfile'
+'cannot get bootfile'
 'bootfile format error'
 get_file
 script
@@ -1349,7 +1349,7 @@ extension
 '-boot/1-fun-0-'
 '-bs2ss/1-fun-0-'
 '-bs2as/1-fun-0-'
-'can not load'
+'cannot load'
 'unexpected command in bootfile'
 prim_inet
 open
@@ -3071,7 +3071,7 @@ change_group
 change_time
 master
 start_slave
-'can not get remote filer '
+'cannot get remote filer '
 start_relay
 relay
 'Port controlling ~w terminated in file_server'
diff --git a/lib/observer/test/observer_SUITE.erl b/lib/observer/test/observer_SUITE.erl
index 40f5d44847..7d54bb9b3b 100644
--- a/lib/observer/test/observer_SUITE.erl
+++ b/lib/observer/test/observer_SUITE.erl
@@ -41,7 +41,8 @@
 %% Default timetrap timeout (set in init_per_testcase)
 -define(default_timeout, ?t:minutes(2)).
 
-suite() -> [{ct_hooks,[ts_install_cth]}].
+suite() -> [{timetrap, {minutes, 5}},
+            {ct_hooks,[ts_install_cth]}].
 
 all() ->
     [app_file, appup_file, {group, gui}].
@@ -301,7 +302,7 @@ table_win(Config) when is_list(Config) ->
     Notebook = setup_whitebox_testing(),
     Parent = get_top_level_parent(Notebook),
     TObj = observer_tv_table:start_link(Parent, [{node,node()}, {type,ets}, {table,#tab{name=foo, id=Table}}]),
-    %% Modal can not test edit..
+    %% Modal cannot test edit..
     %% TPid = wx_object:get_pid(TObj),
     %% TPid ! #wx{event=#wxList{type=command_list_item_activated, itemIndex=12}},
     timer:sleep(3000),
diff --git a/lib/observer/vsn.mk b/lib/observer/vsn.mk
index 5ce0aca589..0e9c8b302c 100644
--- a/lib/observer/vsn.mk
+++ b/lib/observer/vsn.mk
@@ -1 +1 @@
-OBSERVER_VSN = 2.8.2
+OBSERVER_VSN = 2.9
diff --git a/lib/odbc/c_src/Makefile.in b/lib/odbc/c_src/Makefile.in
index 784e73c47e..294d832797 100644
--- a/lib/odbc/c_src/Makefile.in
+++ b/lib/odbc/c_src/Makefile.in
@@ -52,7 +52,7 @@ RELSYSDIR = $(RELEASE_PATH)/lib/odbc-$(VSN)
 # Target Specs
 # ----------------------------------------------------
 EI_ROOT = $(ERL_TOP)/lib/erl_interface
-EI_INCLUDE = -I$(EI_ROOT)/include
+EI_INCLUDE = -I$(EI_ROOT)/include -I$(EI_ROOT)/include/$(TARGET)
 ifeq ($(findstring win32,$(TARGET)),win32)
 EI_LIB = -lerl_interface_md -lei_md 
 ENTRY_OBJ=$(ERL_TOP)/erts/obj/$(TARGET)/port_entry.o
diff --git a/lib/odbc/c_src/odbcserver.c b/lib/odbc/c_src/odbcserver.c
index 8c799f6ff1..fb4f61417e 100644
--- a/lib/odbc/c_src/odbcserver.c
+++ b/lib/odbc/c_src/odbcserver.c
@@ -2749,6 +2749,11 @@ static diagnos get_diagnos(SQLSMALLINT handleType, SQLHANDLE handle, Boolean ext
 	    errmsg_buffer_size = errmsg_buffer_size - errmsg_size;
 	    acc_errmsg_size = acc_errmsg_size + errmsg_size;
 	    current_errmsg_pos = current_errmsg_pos + errmsg_size;
+	} else if(result == SQL_SUCCESS_WITH_INFO && errmsg_size >= errmsg_buffer_size) {
+	    memcpy(diagnos.sqlState, current_sql_state, SQL_STATE_SIZE);
+	    diagnos.nativeError = nativeError;
+	    acc_errmsg_size = errmsg_buffer_size;
+	    break;
 	} else {
 	    break;
 	}
diff --git a/lib/odbc/configure.in b/lib/odbc/configure.in
index 2dec6e5abf..c5cf2786ca 100644
--- a/lib/odbc/configure.in
+++ b/lib/odbc/configure.in
@@ -21,12 +21,6 @@ dnl
 dnl define([AC_CACHE_LOAD], )dnl
 dnl define([AC_CACHE_SAVE], )dnl
 
-if test "x$no_recursion" != "xyes" -a "x$OVERRIDE_CONFIG_CACHE" = "x"; then
-    # We do not want to use a common cache!
-    cache_file=/dev/null
-fi
-
-
 
 dnl Process this file with autoconf to produce a configure script.
 AC_INIT(c_src/odbcserver.c)
diff --git a/lib/odbc/doc/src/databases.xml b/lib/odbc/doc/src/databases.xml
index a060f87e46..614c327a46 100644
--- a/lib/odbc/doc/src/databases.xml
+++ b/lib/odbc/doc/src/databases.xml
@@ -65,7 +65,7 @@
     <p>Another obstacle is that some drivers do not support scrollable
       cursors which has the effect that the only way to traverse the
       result set is sequentially, with next, from the first row to the
-      last, and once you pass a row you can not go back. This means
+      last, and once you pass a row you cannot go back. This means
       that some functions in the interface will not work together with
       certain drivers. A similar problem is that not all drivers
       support "row count" for select queries, hence resulting in that
diff --git a/lib/odbc/doc/src/error_handling.xml b/lib/odbc/doc/src/error_handling.xml
index 4c80cff12f..8d794d2c99 100644
--- a/lib/odbc/doc/src/error_handling.xml
+++ b/lib/odbc/doc/src/error_handling.xml
@@ -138,7 +138,7 @@
          should be run through the erlang port was not compiled for
          your platform.</item>
         <item>Errors discovered by the ODBC driver - If calls to the
-         ODBC-driver fails due to circumstances that can not be
+         ODBC-driver fails due to circumstances that cannot be
          controlled by the Erlang ODBC application programmer, an
          error string will be dug up from the driver.  This string
          will be the <c>Reason</c> in the <c>{error, Reason} </c>
diff --git a/lib/odbc/doc/src/getting_started.xml b/lib/odbc/doc/src/getting_started.xml
index f2ff8b8993..b27754ff22 100644
--- a/lib/odbc/doc/src/getting_started.xml
+++ b/lib/odbc/doc/src/getting_started.xml
@@ -50,7 +50,7 @@
        and paths to appropriate values. This may differ a lot
        between different os's, databases and ODBC drivers. This
        is a configuration problem related to the third party product
-       and hence we can not give you a standard solution in this guide.</item>
+       and hence we cannot give you a standard solution in this guide.</item>
       <item>The Erlang ODBC application consists of both <c>Erlang</c>
        and <c>C</c> code. The <c>C</c> code is delivered as a
        precompiled executable for windows, solaris and linux (SLES10) in the commercial
diff --git a/lib/odbc/doc/src/notes.xml b/lib/odbc/doc/src/notes.xml
index dba7663bb9..696fcaa479 100644
--- a/lib/odbc/doc/src/notes.xml
+++ b/lib/odbc/doc/src/notes.xml
@@ -32,7 +32,22 @@
   <p>This document describes the changes made to the odbc application.
   </p>
 
-  <section><title>ODBC 2.12.2</title>
+  <section><title>ODBC 2.12.3</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Enhance error handling to avoid stack corruption</p>
+          <p>
+	    Own Id: OTP-15667 Aux Id: ERL-808, PR-2065 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>ODBC 2.12.2</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
       <list>
diff --git a/lib/odbc/doc/src/notes_history.xml b/lib/odbc/doc/src/notes_history.xml
index 22a92f67cd..d0c0a472e7 100644
--- a/lib/odbc/doc/src/notes_history.xml
+++ b/lib/odbc/doc/src/notes_history.xml
@@ -63,7 +63,7 @@
       <list type="bulleted">
         <item>
           <p>The erlang odbc process will now die normally if a
-            connection can not be established. No connection no
+            connection cannot be established. No connection no
             process it is expected. And as the client has already
             received the error message that would be the reason with
             which the erlang process would be stopped, the supervisor
@@ -193,7 +193,7 @@
         </item>
         <item>
           <p>The erlang odbc process will now die normally if a
-            connection can not be established. No connection no
+            connection cannot be established. No connection no
             process it is expected. And as the client has already
             received the error message that would be the reason with
             which the erlang process would be stopped, the supervisor
diff --git a/lib/odbc/doc/src/odbc.xml b/lib/odbc/doc/src/odbc.xml
index 4bb1f035f9..1a3063e6ce 100644
--- a/lib/odbc/doc/src/odbc.xml
+++ b/lib/odbc/doc/src/odbc.xml
@@ -29,7 +29,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>odbc</module>
+  <module since="">odbc</module>
   <modulesummary>Erlang ODBC application</modulesummary>
   <description>
     <p>This application provides an Erlang interface to communicate
@@ -130,8 +130,8 @@
   </section>
   <funcs>
     <func>
-      <name>commit(Ref, CommitMode) -></name>
-      <name>commit(Ref, CommitMode, TimeOut) -> ok | {error, Reason} </name>
+      <name since="">commit(Ref, CommitMode) -></name>
+      <name since="">commit(Ref, CommitMode, TimeOut) -> ok | {error, Reason} </name>
       <fsummary>Commits or rollbacks a transaction. </fsummary>
       <type>
         <v>Ref = connection_reference() </v>
@@ -145,7 +145,7 @@
       </desc>
     </func>
     <func>
-      <name>connect(ConnectStr, Options) -> {ok, Ref} | {error, Reason} </name>
+      <name since="">connect(ConnectStr, Options) -> {ok, Ref} | {error, Reason} </name>
       <fsummary>Opens a connection to the database. </fsummary>
       <type>
         <v>ConnectStr = string()</v>
@@ -236,7 +236,7 @@
       </desc>
     </func>
     <func>
-      <name>disconnect(Ref) -> ok | {error, Reason} </name>
+      <name since="">disconnect(Ref) -> ok | {error, Reason} </name>
       <fsummary>Closes a connection to a database. </fsummary>
       <type>
         <v>Ref = connection_reference()</v>
@@ -246,7 +246,7 @@
         <p>Closes a connection to a database. This will also
           terminate all processes that may have been spawned 
           when the connection was opened. This call will always succeed.
-          If the connection can not be disconnected gracefully it will
+          If the connection cannot be disconnected gracefully it will
           be brutally killed. However you may receive an error message
           as result if you try to disconnect a connection started by another
           process.
@@ -255,8 +255,8 @@
       </desc>
     </func>
     <func>
-      <name>describe_table(Ref, Table) -> </name>
-      <name>describe_table(Ref, Table, Timeout) -> {ok, Description} | {error, Reason} </name>
+      <name since="">describe_table(Ref, Table) -> </name>
+      <name since="">describe_table(Ref, Table, Timeout) -> {ok, Description} | {error, Reason} </name>
       <fsummary>Queries the database to find out the data types of the columns of the table <c>Table</c>. </fsummary>
       <type>
         <v>Ref = connection_reference()</v>
@@ -271,8 +271,8 @@
       </desc>
     </func>
     <func>
-      <name>first(Ref) -></name>
-      <name>first(Ref, Timeout) -> {selected, ColNames, Rows} | {error, Reason} </name>
+      <name since="">first(Ref) -></name>
+      <name since="">first(Ref, Timeout) -> {selected, ColNames, Rows} | {error, Reason} </name>
       <fsummary>Returns the first row of the result set and positions a cursor at this row.</fsummary>
       <type>
         <v>Ref = connection_reference()</v>
@@ -287,8 +287,8 @@
       </desc>
     </func>
     <func>
-      <name>last(Ref) -></name>
-      <name>last(Ref, TimeOut) -> {selected, ColNames, Rows} | {error, Reason} </name>
+      <name since="">last(Ref) -></name>
+      <name since="">last(Ref, TimeOut) -> {selected, ColNames, Rows} | {error, Reason} </name>
       <fsummary>Returns the last row of the result set and positions a cursor at this row. </fsummary>
       <type>
         <v>Ref = connection_reference()</v>
@@ -303,8 +303,8 @@
       </desc>
     </func>
     <func>
-      <name>next(Ref) -> </name>
-      <name>next(Ref, TimeOut) -> {selected, ColNames, Rows} | {error, Reason} </name>
+      <name since="">next(Ref) -> </name>
+      <name since="">next(Ref, TimeOut) -> {selected, ColNames, Rows} | {error, Reason} </name>
       <fsummary>Returns the next row of the result set relative the current cursor position and positions the cursor at this row. </fsummary>
       <type>
         <v>Ref = connection_reference()</v>
@@ -325,8 +325,8 @@
       </desc>
     </func>
     <func>
-      <name>param_query(Ref, SQLQuery, Params) -> </name>
-      <name>param_query(Ref, SQLQuery, Params, TimeOut) -> ResultTuple | {error, Reason} </name>
+      <name since="">param_query(Ref, SQLQuery, Params) -> </name>
+      <name since="">param_query(Ref, SQLQuery, Params, TimeOut) -> ResultTuple | {error, Reason} </name>
       <fsummary>Executes a parameterized SQL query.</fsummary>
       <type>
         <v>Ref = connection_reference()</v>
@@ -353,8 +353,8 @@
       </desc>
     </func>
     <func>
-      <name>prev(Ref) -> </name>
-      <name>prev(ConnectionReference, TimeOut) -> {selected, ColNames, Rows} | {error, Reason} </name>
+      <name since="">prev(Ref) -> </name>
+      <name since="">prev(ConnectionReference, TimeOut) -> {selected, ColNames, Rows} | {error, Reason} </name>
       <fsummary>Returns the previous row of the result set relative the current cursor position and positions the cursor at this row. </fsummary>
       <type>
         <v>Ref = connection_reference()</v>
@@ -371,8 +371,8 @@
     </func>
 
     <func>
-      <name>start() -> </name>
-      <name>start(Type) -> ok | {error, Reason}</name>
+      <name since="">start() -> </name>
+      <name since="">start(Type) -> ok | {error, Reason}</name>
       <fsummary>Starts the odb application. </fsummary>
       
       <type>
@@ -389,7 +389,7 @@
     </func>
 
     <func>
-      <name>stop() -> ok </name>
+      <name since="">stop() -> ok </name>
       <fsummary> Stops the odbc application.</fsummary>
       
       <desc>
@@ -400,8 +400,8 @@
     </func>
     
     <func>
-      <name>sql_query(Ref, SQLQuery) -> </name>
-      <name>sql_query(Ref, SQLQuery, TimeOut) -> ResultTuple | [ResultTuple] |{error, Reason}</name>
+      <name since="">sql_query(Ref, SQLQuery) -> </name>
+      <name since="">sql_query(Ref, SQLQuery, TimeOut) -> ResultTuple | [ResultTuple] |{error, Reason}</name>
       <fsummary>Executes a SQL query or a batch of SQL queries. If it is a SELECT query the result set is returned, on the format<c>{selected, ColNames, Rows}</c>. For other query types the tuple <c>{updated, NRows}</c>is returned, and for batched queries, if the driver supports them, this function can also return a list of result tuples.</fsummary>
       <type>
         <v>Ref = connection_reference()</v>
@@ -429,8 +429,8 @@
       </desc>
     </func>
     <func>
-      <name>select_count(Ref, SelectQuery) -> </name>
-      <name>select_count(Ref, SelectQuery, TimeOut) -> {ok, NrRows} | {error, Reason} </name>
+      <name since="">select_count(Ref, SelectQuery) -> </name>
+      <name since="">select_count(Ref, SelectQuery, TimeOut) -> {ok, NrRows} | {error, Reason} </name>
       <fsummary>Executes a SQL SELECT query and associates the result set with the connection. A cursor is positioned before the first row in the result set and the tuple <c>{ok, NrRows}</c>is returned. </fsummary>
       <type>
         <v>Ref = connection_reference()</v>
@@ -453,8 +453,8 @@
       </desc>
     </func>
     <func>
-      <name>select(Ref, Position, N) -></name>
-      <name>select(Ref, Position, N, TimeOut) -> {selected, ColNames, Rows} | {error, Reason} </name>
+      <name since="">select(Ref, Position, N) -></name>
+      <name since="">select(Ref, Position, N, TimeOut) -> {selected, ColNames, Rows} | {error, Reason} </name>
       <fsummary>Selects <c>N</c>consecutive rows of the result set.</fsummary>
       <type>
         <v>Ref = connection_reference()</v>
diff --git a/lib/odbc/test/odbc_connect_SUITE.erl b/lib/odbc/test/odbc_connect_SUITE.erl
index 261dfc6f20..94ca62b3fb 100644
--- a/lib/odbc/test/odbc_connect_SUITE.erl
+++ b/lib/odbc/test/odbc_connect_SUITE.erl
@@ -259,7 +259,7 @@ not_exist_db(_Config)  ->
 
 %%-------------------------------------------------------------------------
 no_c_executable() ->
-    [{doc,"Test what happens if the port-program can not be found"}].
+    [{doc,"Test what happens if the port-program cannot be found"}].
 no_c_executable(_Config) ->
     process_flag(trap_exit, true),
     Dir = filename:nativename(filename:join(code:priv_dir(odbc), 
diff --git a/lib/odbc/vsn.mk b/lib/odbc/vsn.mk
index bb21016fad..ff023e666b 100644
--- a/lib/odbc/vsn.mk
+++ b/lib/odbc/vsn.mk
@@ -1 +1 @@
-ODBC_VSN = 2.12.2
+ODBC_VSN = 2.12.3
diff --git a/lib/os_mon/Makefile b/lib/os_mon/Makefile
index 1eff8a785a..40ce94e0c7 100644
--- a/lib/os_mon/Makefile
+++ b/lib/os_mon/Makefile
@@ -23,11 +23,7 @@ include $(ERL_TOP)/make/$(TARGET)/otp.mk
 #
 # Macros
 #
-ifeq ($(findstring win32,$(TARGET)),win32)
-SUB_DIRECTORIES = src c_src mibs doc/src
-else
-SUB_DIRECTORIES = src c_src mibs doc/src
-endif
+SUB_DIRECTORIES = src c_src doc/src
 
 include vsn.mk
 VSN = $(OS_MON_VSN)
diff --git a/lib/os_mon/doc/src/Makefile b/lib/os_mon/doc/src/Makefile
index 354f8ed26b..8e9a4c333c 100644
--- a/lib/os_mon/doc/src/Makefile
+++ b/lib/os_mon/doc/src/Makefile
@@ -39,7 +39,6 @@ XML_APPLICATION_FILES = ref_man.xml
 XML_REF3_FILES = cpu_sup.xml \
 	disksup.xml \
 	memsup.xml \
-	os_mon_mib.xml \
 	os_sup.xml \
 	nteventlog.xml
 
diff --git a/lib/os_mon/doc/src/cpu_sup.xml b/lib/os_mon/doc/src/cpu_sup.xml
index bada165a06..b7adb2bcd2 100644
--- a/lib/os_mon/doc/src/cpu_sup.xml
+++ b/lib/os_mon/doc/src/cpu_sup.xml
@@ -28,7 +28,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>cpu_sup</module>
+  <module since="">cpu_sup</module>
   <modulesummary>A CPU Load and CPU Utilization Supervisor Process</modulesummary>
   <description>
     <p><c>cpu_sup</c> is a process which supervises the CPU load
@@ -76,7 +76,7 @@
   </description>
   <funcs>
     <func>
-      <name>nprocs() -> UnixProcesses | {error, Reason}</name>
+      <name since="">nprocs() -> UnixProcesses | {error, Reason}</name>
       <fsummary>Get the number of UNIX processes running on this host</fsummary>
       <type>
         <v>UnixProcesses = int()</v>
@@ -90,7 +90,7 @@
       </desc>
     </func>
     <func>
-      <name>avg1() -> SystemLoad | {error, Reason}</name>
+      <name since="">avg1() -> SystemLoad | {error, Reason}</name>
       <fsummary>Get the system load average for the last minute</fsummary>
       <type>
         <v>SystemLoad = int()</v>
@@ -104,7 +104,7 @@
       </desc>
     </func>
     <func>
-      <name>avg5() -> SystemLoad | {error, Reason}</name>
+      <name since="">avg5() -> SystemLoad | {error, Reason}</name>
       <fsummary>Get the system load average for the last five minutes</fsummary>
       <type>
         <v>SystemLoad = int()</v>
@@ -118,7 +118,7 @@
       </desc>
     </func>
     <func>
-      <name>avg15() -> SystemLoad | {error, Reason}</name>
+      <name since="">avg15() -> SystemLoad | {error, Reason}</name>
       <fsummary>Get the system load average for the last fifteen minutes</fsummary>
       <type>
         <v>SystemLoad = int()</v>
@@ -132,7 +132,7 @@
       </desc>
     </func>
     <func>
-      <name>util() -> CpuUtil | {error, Reason}</name>
+      <name since="">util() -> CpuUtil | {error, Reason}</name>
       <fsummary>Get the CPU utilization</fsummary>
       <type>
         <v>CpuUtil = float()</v>
@@ -156,7 +156,7 @@
       </desc>
     </func>
     <func>
-      <name>util(Opts) -> UtilSpec | {error, Reason}</name>
+      <name since="">util(Opts) -> UtilSpec | {error, Reason}</name>
       <fsummary>Get the CPU utilization</fsummary>
       <type>
         <v>Opts = [detailed | per_cpu]</v>
diff --git a/lib/os_mon/doc/src/disksup.xml b/lib/os_mon/doc/src/disksup.xml
index 610ef2c907..116a6dfd19 100644
--- a/lib/os_mon/doc/src/disksup.xml
+++ b/lib/os_mon/doc/src/disksup.xml
@@ -28,7 +28,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>disksup</module>
+  <module since="">disksup</module>
   <modulesummary>A Disk Supervisor Process</modulesummary>
   <description>
     <p><c>disksup</c> is a process which supervises the available disk
@@ -92,7 +92,7 @@
   </section>
   <funcs>
     <func>
-      <name>get_disk_data() -> [DiskData]</name>
+      <name since="">get_disk_data() -> [DiskData]</name>
       <fsummary>Get data for the disks in the system</fsummary>
       <type>
         <v>DiskData = {Id, KByte, Capacity}</v>
@@ -112,7 +112,7 @@
       </desc>
     </func>
     <func>
-      <name>get_check_interval() -> MS</name>
+      <name since="">get_check_interval() -> MS</name>
       <fsummary>Get time interval, in milliseconds, for the periodic disk space check</fsummary>
       <type>
         <v>MS = int()</v>
@@ -123,7 +123,7 @@
       </desc>
     </func>
     <func>
-      <name>set_check_interval(Minutes) -> ok</name>
+      <name since="">set_check_interval(Minutes) -> ok</name>
       <fsummary>Set time interval, in minutes, for the periodic disk space check</fsummary>
       <type>
         <v>Minutes = int()>=1</v>
@@ -138,7 +138,7 @@
       </desc>
     </func>
     <func>
-      <name>get_almost_full_threshold() -> Percent</name>
+      <name since="">get_almost_full_threshold() -> Percent</name>
       <fsummary>Get threshold, in percent, for disk space utilization</fsummary>
       <type>
         <v>Percent = int()</v>
@@ -148,7 +148,7 @@
       </desc>
     </func>
     <func>
-      <name>set_almost_full_threshold(Float) -> ok</name>
+      <name since="">set_almost_full_threshold(Float) -> ok</name>
       <fsummary>Set threshold, as percentage represented by a float, for disk space utilization</fsummary>
       <type>
         <v>Float = float(), 0=&lt;Float=&lt;1</v>
diff --git a/lib/os_mon/doc/src/memsup.xml b/lib/os_mon/doc/src/memsup.xml
index c669e4670a..51c78b07c2 100644
--- a/lib/os_mon/doc/src/memsup.xml
+++ b/lib/os_mon/doc/src/memsup.xml
@@ -28,7 +28,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>memsup</module>
+  <module since="">memsup</module>
   <modulesummary>A Memory Supervisor Process</modulesummary>
   <description>
     <p><c>memsup</c> is a process which supervises the memory usage for
@@ -127,7 +127,7 @@
   </section>
   <funcs>
     <func>
-      <name>get_memory_data() -> {Total,Allocated,Worst}</name>
+      <name since="">get_memory_data() -> {Total,Allocated,Worst}</name>
       <fsummary>Get data for the memory in the system</fsummary>
       <type>
         <v>Total = Allocated = int()</v>
@@ -155,7 +155,7 @@
       </desc>
     </func>
     <func>
-      <name>get_system_memory_data() -> MemDataList</name>
+      <name since="">get_system_memory_data() -> MemDataList</name>
       <fsummary>Get system dependent memory data</fsummary>
       <type>
         <v>MemDataList = [{Tag, Size}]</v>
@@ -216,7 +216,7 @@
       </desc>
     </func>
     <func>
-      <name>get_os_wordsize() -> Wordsize</name>
+      <name since="">get_os_wordsize() -> Wordsize</name>
       <fsummary>Get the wordsize of running os.</fsummary>
       <type>
         <v>Wordsize = 32 | 64 | unsupported_os</v>
@@ -226,7 +226,7 @@
       </desc>
     </func>
     <func>
-      <name>get_check_interval() -> MS</name>
+      <name since="">get_check_interval() -> MS</name>
       <fsummary>Get time interval, in milliseconds, for the periodic memory check</fsummary>
       <type>
         <v>MS = int()</v>
@@ -237,7 +237,7 @@
       </desc>
     </func>
     <func>
-      <name>set_check_interval(Minutes) -> ok</name>
+      <name since="">set_check_interval(Minutes) -> ok</name>
       <fsummary>Set time interval, in minutes, for the periodic memory check</fsummary>
       <type>
         <v>Minutes = int()>0</v>
@@ -252,7 +252,7 @@
       </desc>
     </func>
     <func>
-      <name>get_procmem_high_watermark() -> int()</name>
+      <name since="">get_procmem_high_watermark() -> int()</name>
       <fsummary>Get threshold, in percent, for process memory allocation</fsummary>
       <desc>
         <p>Returns the threshold, in percent, for process memory
@@ -260,7 +260,7 @@
       </desc>
     </func>
     <func>
-      <name>set_procmem_high_watermark(Float) -> ok</name>
+      <name since="">set_procmem_high_watermark(Float) -> ok</name>
       <fsummary>Set threshold, as percentage represented by a float, for process memory allocation</fsummary>
       <desc>
         <p>Changes the threshold, given as a float, for process memory
@@ -273,7 +273,7 @@
       </desc>
     </func>
     <func>
-      <name>get_sysmem_high_watermark() -> int()</name>
+      <name since="">get_sysmem_high_watermark() -> int()</name>
       <fsummary>Get threshold, in percent, for system memory allocation</fsummary>
       <desc>
         <p>Returns the threshold, in percent, for system memory
@@ -281,7 +281,7 @@
       </desc>
     </func>
     <func>
-      <name>set_sysmem_high_watermark(Float) -> ok</name>
+      <name since="">set_sysmem_high_watermark(Float) -> ok</name>
       <fsummary>Set threshold, given as a float, for system memory allocation</fsummary>
       <desc>
         <p>Changes the threshold, given as a float, for system memory
@@ -294,7 +294,7 @@
       </desc>
     </func>
     <func>
-      <name>get_helper_timeout() -> Seconds</name>
+      <name since="">get_helper_timeout() -> Seconds</name>
       <fsummary>Get the timeout value, in seconds, for memory checks</fsummary>
       <type>
         <v>Seconds = int()</v>
@@ -304,7 +304,7 @@
       </desc>
     </func>
     <func>
-      <name>set_helper_timeout(Seconds) -> ok</name>
+      <name since="">set_helper_timeout(Seconds) -> ok</name>
       <fsummary>Set the timeout value, in seconds, for memory checks</fsummary>
       <type>
         <v>Seconds = int() (>= 1)</v>
diff --git a/lib/os_mon/doc/src/nteventlog.xml b/lib/os_mon/doc/src/nteventlog.xml
index d32427227c..08cf165a24 100644
--- a/lib/os_mon/doc/src/nteventlog.xml
+++ b/lib/os_mon/doc/src/nteventlog.xml
@@ -28,7 +28,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>nteventlog</module>
+  <module since="">nteventlog</module>
   <modulesummary>Interface to Windows Event Log</modulesummary>
   <description>
     <p><c>nteventlog</c> provides a generic interface to the Windows
@@ -61,8 +61,8 @@
   </description>
   <funcs>
     <func>
-      <name>start(Identifier, MFA) -> Result</name>
-      <name>start_link(Identifier, MFA) -> Result</name>
+      <name since="">start(Identifier, MFA) -> Result</name>
+      <name since="">start_link(Identifier, MFA) -> Result</name>
       <fsummary>Start the NT eventlog server</fsummary>
       <type>
         <v>Identifier = string() | atom()</v>
@@ -82,7 +82,7 @@
       </desc>
     </func>
     <func>
-      <name>stop() -> stopped</name>
+      <name since="">stop() -> stopped</name>
       <fsummary>Stop the NT eventlog server</fsummary>
       <type>
         <v>Result = stopped</v>
diff --git a/lib/os_mon/doc/src/os_mon_app.xml b/lib/os_mon/doc/src/os_mon_app.xml
index 99492a2021..c77a9d0411 100644
--- a/lib/os_mon/doc/src/os_mon_app.xml
+++ b/lib/os_mon/doc/src/os_mon_app.xml
@@ -88,33 +88,6 @@
   </section>
 
   <section>
-    <title>SNMP MIBs</title>
-    <p>The following MIBs are defined in OS_Mon:</p>
-    <taglist>
-      <tag>OTP-OS-MON-MIB</tag>
-      <item>
-        <p>This MIB contains objects for instrumentation of disk,
-          memory and CPU usage of the nodes in the system.</p>
-      </item>
-    </taglist>
-    <p>The MIB is stored in the <c>mibs</c> directory.  It is defined
-      in SNMPv2 SMI syntax. An SNMPv1 version of the MIB is delivered
-      in the <c>mibs/v1</c> directory.</p>
-    <p>The compiled MIB is located under <c>priv/mibs</c>, and
-      the generated <c>.hrl</c> file under the <c>include</c> directory.
-      To compile a MIB that IMPORTS the <c>OTP-OS-MON-MIB</c>, give
-      the option <c>{il, ["os_mon/priv/mibs"]}</c> to the MIB compiler.</p>
-    <p>If the MIB should be used in a system, it should be loaded into
-      an agent with a call to <c>os_mon_mib:load(Agent)</c>, where
-      <c>Agent</c> is the pid or registered name of an SNMP agent. Use
-      <c>os_mon_mib:unload(Agent)</c> to unload the MIB.
-      The implementation of this MIB uses Mnesia to store a cache with
-      data needed, which implicates that Mnesia must be up and running.
-      The MIB also use functions defined for the <c>OTP-MIB</c>, thus
-      that MIB must be loaded as well.</p>
-  </section>
-
-  <section>
     <title>See Also</title>
     <p><seealso marker="cpu_sup">cpu_sup(3)</seealso>,
       <seealso marker="disksup">disksup(3)</seealso>,
diff --git a/lib/os_mon/doc/src/os_mon_mib.xml b/lib/os_mon/doc/src/os_mon_mib.xml
deleted file mode 100644
index e995bf3de1..0000000000
--- a/lib/os_mon/doc/src/os_mon_mib.xml
+++ /dev/null
@@ -1,74 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE erlref SYSTEM "erlref.dtd">
-
-<erlref>
-  <header>
-    <copyright>
-      <year>2004</year><year>2018</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>os_mon_mib</title>
-    <prepared>Ingela Andin</prepared>
-    <responsible></responsible>
-    <docno></docno>
-    <date></date>
-    <rev></rev>
-  </header>
-  <module>os_mon_mib</module>
-  <modulesummary>Loading and Unloading of OTP-OS-MON-MIB</modulesummary>
-  <description>
-    <p>Functions for loading and unloading the OTP-OS-MON-MIB into/from
-      an SNMP agent. The instrumentation of the OTP-OS-MON-MIB uses
-      Mnesia, hence Mnesia must be started prior to loading
-    the OTP-OS-MON-MIB.</p>
-    <warning>
-      <p>This module has been deprecated and will be removed in a furture release.</p>
-    </warning>
-  </description>
-  <funcs>
-    <func>
-      <name>load(Agent) -> ok | {error, Reason}</name>
-      <fsummary>Load the OTP-OS-MON-MIB</fsummary>
-      <type>
-        <v>Agent = pid() | atom()</v>
-        <v>Reason = term()</v>
-      </type>
-      <desc>
-        <p>Loads the OTP-OS-MON-MIB.</p>
-      </desc>
-    </func>
-    <func>
-      <name>unload(Agent) -> ok | {error, Reason}</name>
-      <fsummary>Unload the OTP-OS-MON-MIB</fsummary>
-      <type>
-        <v>Agent = pid() | atom() </v>
-        <v>Reason = term()</v>
-      </type>
-      <desc>
-        <p>Unloads the OTP-OS-MON-MIB.</p>
-      </desc>
-    </func>
-  </funcs>
-
-  <section>
-    <title>See Also</title>
-    <p><seealso marker="os_mon_app">os_mon(6)</seealso>,
-      <seealso marker="snmp:snmp">snmp(3)</seealso></p>
-  </section>
-</erlref>
-
diff --git a/lib/os_mon/doc/src/os_sup.xml b/lib/os_mon/doc/src/os_sup.xml
index d517f387b4..4a84165a6c 100644
--- a/lib/os_mon/doc/src/os_sup.xml
+++ b/lib/os_mon/doc/src/os_sup.xml
@@ -28,7 +28,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>os_sup</module>
+  <module since="">os_sup</module>
   <modulesummary>Interface to OS System Messages</modulesummary>
   <description>
     <p><c>os_sup</c> is a process providing a message passing service
@@ -159,8 +159,8 @@
   </section>
   <funcs>
     <func>
-      <name>enable() -> ok | {error, Res}</name>
-      <name>enable(Dir, Conf) -> ok | {error, Error}</name>
+      <name since="">enable() -> ok | {error, Res}</name>
+      <name since="">enable(Dir, Conf) -> ok | {error, Error}</name>
       <fsummary>Enable the service (Solaris only)</fsummary>
       <type>
         <v>Dir = Conf = Res = string()</v>
@@ -194,8 +194,8 @@
       </desc>
     </func>
     <func>
-      <name>disable() -> ok | {error, Res}</name>
-      <name>disable(Dir, Conf) -> ok | {error, Error}</name>
+      <name since="">disable() -> ok | {error, Res}</name>
+      <name since="">disable(Dir, Conf) -> ok | {error, Error}</name>
       <fsummary>Disable the service (Solaris only)</fsummary>
       <type>
         <v>Dir = Conf = Res = string()</v>
diff --git a/lib/os_mon/doc/src/ref_man.xml b/lib/os_mon/doc/src/ref_man.xml
index a8f847a8ba..57dd5c5f0b 100644
--- a/lib/os_mon/doc/src/ref_man.xml
+++ b/lib/os_mon/doc/src/ref_man.xml
@@ -36,7 +36,6 @@
   <xi:include href="cpu_sup.xml"/>
   <xi:include href="disksup.xml"/>
   <xi:include href="memsup.xml"/>
-  <xi:include href="os_mon_mib.xml"/>
   <xi:include href="os_sup.xml"/>
   <xi:include href="nteventlog.xml"/>
 </application>
diff --git a/lib/os_mon/mibs/Makefile b/lib/os_mon/mibs/Makefile
deleted file mode 100644
index dbc105ee3d..0000000000
--- a/lib/os_mon/mibs/Makefile
+++ /dev/null
@@ -1,101 +0,0 @@
-#
-# %CopyrightBegin%
-# 
-# Copyright Ericsson AB 1997-2016. All Rights Reserved.
-# 
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-# 
-# %CopyrightEnd%
-#
-include $(ERL_TOP)/make/target.mk
-include $(ERL_TOP)/make/$(TARGET)/otp.mk
-
-# ----------------------------------------------------
-# Application version
-# ----------------------------------------------------
-include ../vsn.mk
-VSN=$(OS_MON_VSN)
-
-# ----------------------------------------------------
-# Release directory specification
-# ----------------------------------------------------
-RELSYSDIR = $(RELEASE_PATH)/lib/os_mon-$(VSN)
-
-# ----------------------------------------------------
-# Target Specs
-# ----------------------------------------------------
-
-MIB_FILES= OTP-OS-MON-MIB.mib 
-FUNCS_FILES = OTP-OS-MON-MIB.funcs
-
-BIN_TARGETS= $(MIB_FILES:%.mib=$(SNMP_BIN_TARGET_DIR)/%.bin)
-HRL_TARGETS= $(MIB_FILES:%.mib=$(SNMP_HRL_TARGET_DIR)/%.hrl)
-V1_MIB_FILES= $(MIB_FILES:%.mib=v1/%.mib.v1)
-
-TARGET_FILES= $(SNMP_BIN_TARGET_DIR)/OTP-REG.bin \
-  $(SNMP_BIN_TARGET_DIR)/OTP-TC.bin \
-  $(SNMP_BIN_TARGET_DIR)/OTP-MIB.bin \
-  $(BIN_TARGETS) $(HRL_TARGETS) $(V1_MIB_FILES)
-
-# ----------------------------------------------------
-# FLAGS
-# ----------------------------------------------------
-SNMP_FLAGS =  -I $(SNMP_BIN_TARGET_DIR)
-
-# ----------------------------------------------------
-# Targets
-# ----------------------------------------------------
-
-debug opt: $(TARGET_FILES)
-
-clean:
-	rm -f $(TARGET_FILES)
-	rm -f core
-
-docs:
-
-OTP_MIBDIR = $(shell if test -d ../../otp_mibs; then echo otp_mibs; \
-		      else echo sasl; fi)
-
-$(SNMP_BIN_TARGET_DIR)/OTP-REG.bin:     $(ERL_TOP)/lib/$(OTP_MIBDIR)/mibs/OTP-REG.mib
-	$(snmp_verbose)$(ERLC) -pa $(SNMP_TOOLKIT)/ebin -I $(SNMP_TOOLKIT)/priv/mibs $(SNMP_FLAGS) -o $(SNMP_BIN_TARGET_DIR) $<
-
-$(SNMP_BIN_TARGET_DIR)/OTP-TC.bin:     $(ERL_TOP)/lib/$(OTP_MIBDIR)/mibs/OTP-TC.mib
-	$(snmp_verbose)$(ERLC) -pa $(SNMP_TOOLKIT)/ebin -I $(SNMP_TOOLKIT)/priv/mibs $(SNMP_FLAGS) -o $(SNMP_BIN_TARGET_DIR) $<
-
-$(SNMP_BIN_TARGET_DIR)/OTP-MIB.bin:     $(ERL_TOP)/lib/$(OTP_MIBDIR)/mibs/OTP-MIB.mib
-	$(snmp_verbose)$(ERLC) -pa $(SNMP_TOOLKIT)/ebin -I $(SNMP_TOOLKIT)/priv/mibs $(SNMP_FLAGS) -o $(SNMP_BIN_TARGET_DIR) $<
-
-v1/%.mib.v1: %.mib
-	$(gen_verbose)$(ERL_TOP)/lib/snmp/bin/snmp-v2tov1 -o $@ $<
-
-$(SNMP_BIN_TARGET_DIR)/OTP-OS-MON-MIB.bin: \
-	$(SNMP_BIN_TARGET_DIR)/OTP-REG.bin \
-	$(SNMP_BIN_TARGET_DIR)/OTP-MIB.bin \
-
-# ----------------------------------------------------
-# Release Target
-# ---------------------------------------------------- 
-include $(ERL_TOP)/make/otp_release_targets.mk
-
-release_spec: opt
-	$(INSTALL_DIR) "$(RELSYSDIR)/mibs"
-	$(INSTALL_DIR) "$(RELSYSDIR)/mibs/v1"
-	$(INSTALL_DATA) $(MIB_FILES) $(FUNCS_FILES) "$(RELSYSDIR)/mibs"
-	$(INSTALL_DATA) $(V1_MIB_FILES) "$(RELSYSDIR)/mibs/v1"
-	$(INSTALL_DIR) "$(RELSYSDIR)/include"
-	$(INSTALL_DATA) $(HRL_TARGETS) "$(RELSYSDIR)/include"
-	$(INSTALL_DIR) "$(RELSYSDIR)/priv/mibs"
-	$(INSTALL_DATA) $(BIN_TARGETS) "$(RELSYSDIR)/priv/mibs"
-
-release_docs_spec:
diff --git a/lib/os_mon/mibs/OTP-OS-MON-MIB.funcs b/lib/os_mon/mibs/OTP-OS-MON-MIB.funcs
deleted file mode 100644
index 7ed76517b9..0000000000
--- a/lib/os_mon/mibs/OTP-OS-MON-MIB.funcs
+++ /dev/null
@@ -1,5 +0,0 @@
-{loadMemorySystemWatermark, {os_mon_mib, mem_sys_mark, []}}.
-{loadMemoryErlProcWatermark, {os_mon_mib, mem_proc_mark, []}}.
-{loadTable, {os_mon_mib, load_table, []}}.
-{diskAlmostFullThreshold, {os_mon_mib, disk_threshold, []}}.
-{diskTable, {os_mon_mib, disk_table, []}}.
diff --git a/lib/os_mon/mibs/OTP-OS-MON-MIB.mib b/lib/os_mon/mibs/OTP-OS-MON-MIB.mib
deleted file mode 100644
index e027e96154..0000000000
--- a/lib/os_mon/mibs/OTP-OS-MON-MIB.mib
+++ /dev/null
@@ -1,423 +0,0 @@
---
--- %CopyrightBegin%
--- 
--- Copyright Ericsson AB 1997-2016. All Rights Reserved.
--- 
--- Licensed under the Apache License, Version 2.0 (the "License");
--- you may not use this file except in compliance with the License.
--- You may obtain a copy of the License at
--- 
---     http://www.apache.org/licenses/LICENSE-2.0
---
--- Unless required by applicable law or agreed to in writing, software
--- distributed under the License is distributed on an "AS IS" BASIS,
--- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
--- See the License for the specific language governing permissions and
--- limitations under the License.
--- 
--- %CopyrightEnd%
---
-
-OTP-OS-MON-MIB DEFINITIONS ::= BEGIN
- 
-IMPORTS
-    MODULE-IDENTITY, NOTIFICATION-TYPE, OBJECT-TYPE,
-    Counter32, Gauge32, Integer32, Unsigned32, Counter64
-        FROM SNMPv2-SMI
-    TEXTUAL-CONVENTION, DisplayString
-        FROM SNMPv2-TC
-    MODULE-COMPLIANCE, NOTIFICATION-GROUP, OBJECT-GROUP
-        FROM SNMPv2-CONF
-    otpModules, otpApplications
-        FROM OTP-REG
-    erlNodeId
-        FROM OTP-MIB
-    ;
-
-
-otpOsMonModule MODULE-IDENTITY
-    LAST-UPDATED  "0305090900Z"
-    ORGANIZATION  "Ericsson"
-    CONTACT-INFO
-        "Contact:  Erlang Support see license agreement for Erlang/OTP."
-
-    DESCRIPTION
-        "This MIB is part of the OTP MIB.  It defines MIB objects
-        for the os_mon application in OTP."
-
-    REVISION	"0508260900Z"
-    DESCRIPTION		
-        "Removed dependeny on EVA."
-    REVISION	"0305090900Z"
-    DESCRIPTION		
-        "Changed CONTACT-INFO as it was outdated, made it more generic
-	to avoid such changes in the future."
-    
-    REVISION     "9807080900Z"
-    DESCRIPTION
-        "Changed MAX-ACCESS for diskDescr from not-accessible to
-        read-only."
-
-    REVISION     "9801270900Z"
-    DESCRIPTION
-        "Changed erroneous name of this module to otpOsMonModule."
-
-    REVISION     "9712010900Z"
-    DESCRIPTION
-        "Converted to v2 SMI and placed in the OTP tree."
-
-    REVISION     "9608191700Z"
-    DESCRIPTION
-        "The initial revision of MIB module OTP-OS-MON-MIB."
-    ::= { otpModules 4 }
-
-OTPCounterBasedGauge64 ::= TEXTUAL-CONVENTION
-  STATUS       current
-  DESCRIPTION
-        "The CounterBasedGauge64 type represents a non-negative
-        integer, which may increase or decrease, but shall never
-        exceed a maximum value, nor fall below a minimum value. The
-        maximum value can not be greater than 2^64-1
-        (18446744073709551615 decimal), and the minimum value can
-
-        not be smaller than 0.  The value of a CounterBasedGauge64
-        has its maximum value whenever the information being modeled
-        is greater than or equal to its maximum value, and has its
-        minimum value whenever the information being modeled is
-        smaller than or equal to its minimum value.  If the
-        information being modeled subsequently decreases below
-        (increases above) the maximum (minimum) value, the
-        CounterBasedGauge64 also decreases (increases).
-
-        Note that this TC is not strictly supported in SMIv2,
-        because the 'always increasing' and 'counter wrap' semantics
-        associated with the Counter64 base type are not preserved.
-        It is possible that management applications which rely
-        solely upon the (Counter64) ASN.1 tag to determine object
-        semantics will mistakenly operate upon objects of this type
-        as they would for Counter64 objects.
-
-        This textual convention represents a limited and short-term
-        solution, and may be deprecated as a long term solution is
-        defined and deployed to replace it."
-  SYNTAX Counter64
-
-otpOsMonMIB     OBJECT IDENTIFIER ::= { otpApplications 2 }
-otpOsMonMIBConformance
-                OBJECT IDENTIFIER ::= { otpOsMonMIB 1 }
-otpOsMonMIBObjects
-                OBJECT IDENTIFIER ::= { otpOsMonMIB 2 }
-otpOsMonMIBAlarms
-                OBJECT IDENTIFIER ::= { otpOsMonMIB 4 }
-otpOsMonMIBAlarmsV2
-                OBJECT IDENTIFIER ::= { otpOsMonMIBAlarms 0 }
-
-
--- Datatypes
-
--- Managed Objects
-
-load            OBJECT IDENTIFIER ::= { otpOsMonMIBObjects 1 }
-disk            OBJECT IDENTIFIER ::= { otpOsMonMIBObjects 2 }
-
-loadMemorySystemWatermark OBJECT-TYPE
-    SYNTAX      Integer32 (0..100)
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION    
-        "Threshold in percent of the total available system
-        memory, which specifies how much memory can be allocated
-        by the system before an alarm is sent."
-    ::= { load 1 }
-
-loadMemoryErlProcWatermark OBJECT-TYPE
-    SYNTAX      Integer32 (0..100)
-    MAX-ACCESS  read-only    
-    STATUS      current    
-    DESCRIPTION
-        "Threshold in percent of the total available system
-        memory, which specifies how much memory can be allocated
-        by one Erlang process before an alarm is sent."
-    ::= { load 2 }
-
-loadTable OBJECT-TYPE
-    SYNTAX      SEQUENCE OF LoadEntry
-    MAX-ACCESS  not-accessible
-    STATUS      current
-    DESCRIPTION
-        "A table with load and memory information
-        for each node."
-    ::= { load 3 }
-
-loadEntry OBJECT-TYPE
-    SYNTAX      LoadEntry
-    MAX-ACCESS  not-accessible
-    STATUS      current
-    DESCRIPTION
-        "A conceptual row in the loadTable."
-    INDEX   { loadErlNodeName }
-    ::= { loadTable 1 }
-
-LoadEntry ::= SEQUENCE {
-    loadErlNodeName                   DisplayString,
-    loadSystemTotalMemory             Gauge32,
-    loadSystemUsedMemory              Gauge32,
-    loadLargestErlProcess             DisplayString,
-    loadLargestErlProcessUsedMemory   Gauge32,
-    loadCpuLoad                       Integer32,
-    loadCpuLoad5                      Integer32,
-    loadCpuLoad15                     Integer32,
-    loadOsWordsize                    Unsigned32,
-    loadSystemTotalMemory64           OTPCounterBasedGauge64,
-    loadSystemUsedMemory64            OTPCounterBasedGauge64,
-    loadLargestErlProcessUsedMemory64 OTPCounterBasedGauge64
-    }
-
-loadErlNodeName OBJECT-TYPE
-    SYNTAX      DisplayString
-    MAX-ACCESS  not-accessible
-    STATUS      current
-    DESCRIPTION
-        "The name of the erlang node, e.g. erlnode@host1."
-    ::= { loadEntry 1 }
-
-loadSystemTotalMemory OBJECT-TYPE
-    SYNTAX      Gauge32
-    UNITS       "bytes"
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "The amount of total memory in the system."
-    ::= { loadEntry 2 }
-
-loadSystemUsedMemory OBJECT-TYPE
-    SYNTAX      Gauge32
-    UNITS       "bytes"
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "The amount of used memory."
-    ::= { loadEntry 3 }
-
-loadLargestErlProcess OBJECT-TYPE
-    SYNTAX      DisplayString
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "The process identifier (Pid) of the largest Erlang
-        process."
-    ::= { loadEntry 4 }
-
-loadLargestErlProcessUsedMemory OBJECT-TYPE
-    SYNTAX      Gauge32
-    UNITS       "bytes"
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "The amount of memory used by the largest Erlang
-        process."
-    ::= { loadEntry 5 }
-
-loadCpuLoad OBJECT-TYPE
-    SYNTAX      Integer32 (0..100)
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "The average load the last minute in percent of the CPU
-	where the Erlang node runs."
-    ::= { loadEntry 6 }
-
-loadCpuLoad5 OBJECT-TYPE
-    SYNTAX      Integer32 (0..100)
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "The average load the last 5 minutes in percent of the CPU
-	where the Erlang node runs."
-    ::= { loadEntry 7}
-
-loadCpuLoad15 OBJECT-TYPE
-    SYNTAX      Integer32 (0..100)
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "The average load the last 15 minutes in percent of the CPU
-	where the Erlang node runs."
-    ::= { loadEntry 8}
-
-loadOsWordsize OBJECT-TYPE
-    SYNTAX      Unsigned32
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "The wordsize of the operating operating system."
-    ::= { loadEntry 9 }
-
-loadSystemTotalMemory64 OBJECT-TYPE
-    SYNTAX      OTPCounterBasedGauge64
-    UNITS       "bytes"
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "The amount of total memory in the system for 64-bit operating system."
-    ::= { loadEntry 10 }
-
-loadSystemUsedMemory64 OBJECT-TYPE
-    SYNTAX      OTPCounterBasedGauge64
-    UNITS       "bytes"
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "The amount of used memory for 64-bit operating system."
-    ::= { loadEntry 11 }
-
-loadLargestErlProcessUsedMemory64 OBJECT-TYPE
-    SYNTAX      OTPCounterBasedGauge64
-    UNITS       "bytes"
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "The amount of memory used by the largest Erlang
-        process for 64-bit operating system.."
-    ::= { loadEntry 12 }
-
-diskAlmostFullThreshold OBJECT-TYPE
-    SYNTAX      Integer32 (0..100)
-    MAX-ACCESS  read-only    
-    STATUS      current    
-    DESCRIPTION    
-        "Threshold in percent of the available disk space,
-        which specifies how much disk space can be used by
-        a disk or partition before an alarm is sent."
-    ::= { disk 1 }
-
-diskTable OBJECT-TYPE
-    SYNTAX      SEQUENCE OF DiskEntry
-    MAX-ACCESS  not-accessible
-    STATUS      current
-    DESCRIPTION
-          "A table with all local disks or partitions on each
-          node."
-    ::= { disk 2 }
-
-diskEntry OBJECT-TYPE
-    SYNTAX      DiskEntry
-    MAX-ACCESS  not-accessible
-    STATUS      current
-    DESCRIPTION
-          "A conceptual row in the diskTable."
-    INDEX      { erlNodeId, diskId }
-    ::= { diskTable 1 }
-
-DiskEntry ::= SEQUENCE {
-    diskId          Integer32,
-    diskDescr       DisplayString,
-    diskKBytes      Gauge32,
-    diskCapacity    Integer32
-    }
-
-diskId OBJECT-TYPE
-    SYNTAX      Integer32
-    MAX-ACCESS  not-accessible
-    STATUS      current
-    DESCRIPTION
-        "An integer that uniquely identifies the disk
-        or partition."
-    ::= { diskEntry 1 }
-
-diskDescr OBJECT-TYPE
-    SYNTAX     DisplayString
-    MAX-ACCESS read-only
-    STATUS     current
-    DESCRIPTION
-        "A string that identifies the disk or partition."
-    ::= { diskEntry 2 }
-
-diskKBytes OBJECT-TYPE
-    SYNTAX      Gauge32
-    UNITS       "kbytes"
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "The amount of total disk/partition space. "
-    ::= { diskEntry 3 }
-
-diskCapacity OBJECT-TYPE
-    SYNTAX      Integer32 (0..100)
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "How much of the disk's/partition's total capacity has
-        been used, in percent."
-    ::= { diskEntry 4 }
-
-
--- conformance information
-
-otpOsMonMIBCompliances
-                OBJECT IDENTIFIER ::= { otpOsMonMIBConformance 1 }
-otpOsMonMIBGroups
-                OBJECT IDENTIFIER ::= { otpOsMonMIBConformance 2 }
-
-
--- compliance statements
-
-otpOsMonBasicCompliance MODULE-COMPLIANCE
-    STATUS  current
-    DESCRIPTION
-        "The compliance statement for SNMPv2 entities which
-        implement the OTP-OS-MON-MIB."
-    MODULE  -- this module
-        GROUP loadGroup
-        DESCRIPTION
-            "This group is mandatory for systems implementing the
-            load supervison functionality."
-        GROUP loadAlarmsGroup
-        DESCRIPTION
-            "This group is optional for systems implementing the
-            load supervison functionality."
-        GROUP diskGroup
-        DESCRIPTION
-            "This group is mandatory for system implementing the
-            disk supervison functionality."
-        GROUP diskAlarmsGroup
-        DESCRIPTION
-            "This group is optional for systems implementing the
-            disk supervison functionality."
-    ::= { otpOsMonMIBCompliances 1 }
-
-
--- units of conformance
-
-loadGroup OBJECT-GROUP
-    OBJECTS { loadMemorySystemWatermark,
-              loadMemoryErlProcWatermark,
-              loadSystemTotalMemory,
-              loadSystemUsedMemory,
-              loadLargestErlProcess,
-              loadLargestErlProcessUsedMemory,
-              loadCpuLoad,
-              loadCpuLoad5,
-              loadCpuLoad15,
-              loadOsWordsize,
-              loadSystemTotalMemory64,
-              loadSystemUsedMemory64,
-              loadLargestErlProcessUsedMemory64}
-    STATUS  current
-    DESCRIPTION
-            "A collection of objects providing basic instrumentation
-            of the load of the OTP system."
-    ::= { otpOsMonMIBGroups 1 }
-
-diskGroup OBJECT-GROUP
-    OBJECTS { diskAlmostFullThreshold,
-              diskDescr,
-              diskKBytes,
-              diskCapacity }
-    STATUS  current
-    DESCRIPTION
-            "A collection of objects providing basic instrumentation
-            of the disks in the OTP system."
-    ::= { otpOsMonMIBGroups 3 }
-
-END
diff --git a/lib/os_mon/mibs/v1/.gitignore b/lib/os_mon/mibs/v1/.gitignore
deleted file mode 100644
index e69de29bb2..0000000000
--- a/lib/os_mon/mibs/v1/.gitignore
+++ /dev/null
diff --git a/lib/os_mon/src/Makefile b/lib/os_mon/src/Makefile
index fc2eb22393..923a31f290 100644
--- a/lib/os_mon/src/Makefile
+++ b/lib/os_mon/src/Makefile
@@ -34,8 +34,7 @@ RELSYSDIR = $(RELEASE_PATH)/lib/os_mon-$(VSN)
 # ----------------------------------------------------
 # Target Specs
 # ----------------------------------------------------
-MODULES= disksup memsup cpu_sup os_mon os_mon_mib os_sup os_mon_sysinfo \
-	nteventlog
+MODULES= disksup memsup cpu_sup os_mon os_sup os_mon_sysinfo nteventlog
 
 INCLUDE=../include
 CSRC=../c_src
diff --git a/lib/os_mon/src/memsup.erl b/lib/os_mon/src/memsup.erl
index 9d6447430d..b69d657aa7 100644
--- a/lib/os_mon/src/memsup.erl
+++ b/lib/os_mon/src/memsup.erl
@@ -701,6 +701,7 @@ get_os_wordsize_with_uname() ->
 	"sparc64" -> 64;
 	"amd64"   -> 64;
 	"ppc64"   -> 64;
+	"ppc64le" -> 64;
 	"s390x"   -> 64;
 	_         -> 32
     end.
diff --git a/lib/os_mon/src/os_mon.app.src b/lib/os_mon/src/os_mon.app.src
index 8be94f65d4..6c9b0d7576 100644
--- a/lib/os_mon/src/os_mon.app.src
+++ b/lib/os_mon/src/os_mon.app.src
@@ -21,7 +21,7 @@
 {application, os_mon,
    [{description, "CPO  CXC 138 46"},
     {vsn, "%VSN%"},
-    {modules, [os_mon, os_mon_mib, os_sup,
+    {modules, [os_mon, os_sup,
                disksup, memsup, cpu_sup, os_mon_sysinfo, nteventlog]},
     {registered, [os_mon_sup, os_mon_sysinfo, disksup, memsup, cpu_sup, 
                   os_sup_server]},
@@ -31,6 +31,4 @@
 	   {start_memsup, true},
 	   {start_os_sup, false}]},
     {mod, {os_mon, []}},
-    {runtime_dependencies, ["stdlib-2.0","snmp-4.25.1","sasl-2.4",
-			    "otp_mibs-1.0.9","mnesia-4.12","kernel-3.0",
-			    "erts-6.0"]}]}.
+    {runtime_dependencies, ["stdlib-2.0","sasl-2.4","kernel-3.0","erts-6.0"]}]}.
diff --git a/lib/os_mon/src/os_mon_mib.erl b/lib/os_mon/src/os_mon_mib.erl
deleted file mode 100644
index 9b5d2fbba6..0000000000
--- a/lib/os_mon/src/os_mon_mib.erl
+++ /dev/null
@@ -1,251 +0,0 @@
-%%
-%% %CopyrightBegin%
-%% 
-%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
-%% 
-%% Licensed under the Apache License, Version 2.0 (the "License");
-%% you may not use this file except in compliance with the License.
-%% You may obtain a copy of the License at
-%%
-%%     http://www.apache.org/licenses/LICENSE-2.0
-%%
-%% Unless required by applicable law or agreed to in writing, software
-%% distributed under the License is distributed on an "AS IS" BASIS,
-%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-%% See the License for the specific language governing permissions and
-%% limitations under the License.
-%% 
-%% %CopyrightEnd%
-%%
--module(os_mon_mib).
-%%%-----------------------------------------------------------------
-%%% Description: This module implements the OS-MON-MIB.
-%%% The tables are implemented as shadow tables with the module
-%%% snmp_shadow_table.  Here the update functions are implemented.
-%%%-----------------------------------------------------------------
-
--include("../../otp_mibs/include/OTP-MIB.hrl").
-      
-%% API
--export([load/1, unload/1]).
-
-%% Deprecated API
--export([init/1, stop/1]).
-
--deprecated([{init,1,eventually},
-	     {stop,1,eventually}]).
-
-%% SNMP instrumentation
--export([load_table/1, load_table/3, disk_table/1, disk_table/3,
-	 mem_sys_mark/1, mem_proc_mark/1, disk_threshold/1]).
-
-%% SNMP shadow functions
--export([update_load_table/0, update_disk_table/0]).
-
-%% Exported for internal use via rpc
--export([get_load/1, get_disks/1]).
-
-%% Shadow tables  
--record(loadTable, {
-	loadErlNodeName, 
-	loadSystemTotalMemory, 
-	loadSystemUsedMemory,
-	loadLargestErlProcess, 
-	loadLargestErlProcessUsedMemory,
-	loadCpuLoad, 
-	loadCpuLoad5, 
-	loadCpuLoad15,
-	loadOsWordsize,
-	loadSystemTotalMemory64, 
-	loadSystemUsedMemory64,
-	loadLargestErlProcessUsedMemory64}).
-
--record(diskTable,
-	{key, diskDescr, diskKBytes, diskCapacity}).
-
-%% Shadow argument macros 
--define(loadShadowArgs, 
-	{loadTable, string, record_info(fields, loadTable), 5000,
-	 fun os_mon_mib:update_load_table/0}).
-	
--define(diskShadowArgs, 
-	{diskTable, {integer, integer}, record_info(fields, diskTable), 5000,
-	 fun os_mon_mib:update_disk_table/0}).
-
-%% Misc
--record(diskAlloc, {diskDescr, diskId}).
-
-%%%=========================================================================
-%%%  API
-%%%=========================================================================
-
-%%-------------------------------------------------------------------------
-%% load(Agent) ->  ok | {error, Reason}
-%% Agent - pid() | atom()
-%% Reason - term()
-%% Description: Loads the OTP-OS-MON-MIB
-%%-------------------------------------------------------------------------
-load(Agent) ->
-    MibDir = filename:join(code:priv_dir(os_mon), "mibs"),
-    snmpa:load_mibs(Agent, [filename:join(MibDir, "OTP-OS-MON-MIB")]).
-
-%%-------------------------------------------------------------------------
-%% unload(Agent) ->  ok | {error, Reason}
-%% Agent - pid() | atom()
-%% Reason - term()
-%% Description: Unloads the OTP-OS-MON-MIB
-%%-------------------------------------------------------------------------
-unload(Agent) ->
-    snmpa:unload_mibs(Agent, ["OTP-OS-MON-MIB"]).
-    
-%% To be backwards compatible
-init(Agent) ->
-    load(Agent).
-stop(Agent) ->
-    unload(Agent).
-
-%%%=========================================================================
-%%%  SNMP instrumentation
-%%%=========================================================================
-load_table(Op) ->
-    snmp_shadow_table:table_func(Op, ?loadShadowArgs).
-load_table(Op, RowIndex, Cols) ->
-    snmp_shadow_table:table_func(Op, RowIndex, Cols, ?loadShadowArgs).
-
-disk_table(new) ->
-    Tab = diskAlloc,
-    Storage = ram_copies, 
-    case lists:member(Tab, mnesia:system_info(tables)) of
-	true ->
-	    case mnesia:table_info(Tab, storage_type) of
-		unknown ->
-		    {atomic, ok}=mnesia:add_table_copy(Tab, node(), Storage);
-		Storage ->
-		    catch delete_all(Tab)
-	    end;
-	false ->
-	    Nodes = [node()],
-	    Props = [{type, set},
-		     {attributes, record_info(fields, diskAlloc)},
-		     {local_content, true},
-		     {Storage, Nodes}],
-	    {atomic, ok} = mnesia:create_table(Tab, Props)
-    
-    end,
-    Rec = #diskAlloc{diskDescr = next_index, diskId = 1},
-    ok = mnesia:dirty_write(Rec),
-    snmp_shadow_table:table_func(new, ?diskShadowArgs).
-
-disk_table(Op, RowIndex, Cols) ->
-    snmp_shadow_table:table_func(Op, RowIndex, Cols, ?diskShadowArgs).
-
-mem_sys_mark(get) ->
-    {value, memsup:get_sysmem_high_watermark()};
-mem_sys_mark(_) ->
-    ok.
-
-mem_proc_mark(get) ->
-    {value, memsup:get_procmem_high_watermark()};
-mem_proc_mark(_) ->
-    ok.
-
-disk_threshold(get) ->
-    {value, disksup:get_almost_full_threshold()};
-disk_threshold(_) ->
-    ok.
-
-%%%=========================================================================
-%%%  SNMP shadow functions
-%%%=========================================================================
-update_load_table() ->
-    delete_all(loadTable),
-    lists:foreach(
-      fun(Node) ->
-	      case rpc:call(Node, os_mon_mib, get_load, [Node]) of
-		  Load when is_record(Load,loadTable) ->
-		      ok = mnesia:dirty_write(Load);
-		  _Else ->
-		      ok
-	      end
-      end, [node() | nodes()]).
-
-
-update_disk_table() ->
-    delete_all(diskTable),
-    node_update_disk_table(
-      otp_mib:erl_node_table(get_next, [], [?erlNodeName,?erlNodeOutBytes])).
-
-%%%========================================================================
-%%% Exported for internal use via rpc
-%%%========================================================================
-get_load(Node) ->
-    {Total, Allocated, PidString, PidAllocated} = case memsup:get_memory_data() of
-	{MemTot, MemAlloc, undefined}     -> {MemTot, MemAlloc, "undefined", 0};
-	{MemTot, MemAlloc, {Pid, PidMem}} -> {MemTot, MemAlloc, pid_to_str(Pid), PidMem} 
-    end,
-    OsWordsize = case memsup:get_os_wordsize() of
-	WS when is_integer(WS) -> WS;
-	_                      -> 0
-    end,
-    #loadTable{
-	loadErlNodeName                   = atom_to_list(Node),
-	loadSystemTotalMemory             = mask_int32(Total),
-	loadSystemUsedMemory              = mask_int32(Allocated),
-	loadLargestErlProcess             = PidString,
-	loadLargestErlProcessUsedMemory   = mask_int32(PidAllocated),
-	loadCpuLoad                       = get_cpu_load(avg1),   
-	loadCpuLoad5                      = get_cpu_load(avg5),
-	loadCpuLoad15                     = get_cpu_load(avg15),
-	loadOsWordsize                    = OsWordsize,  
-	loadSystemTotalMemory64           = Total,
-	loadSystemUsedMemory64            = Allocated,
-	loadLargestErlProcessUsedMemory64 = PidAllocated
-    }.
-
-mask_int32(Value) -> Value band ((1 bsl 32) - 1).
-
-get_disks(NodeId) ->
-    element(1,
-	    lists:mapfoldl(
-	      fun({Descr, KByte, Capacity}, DiskId) ->
-		      {#diskTable{key = {NodeId, DiskId}, 
-				  diskDescr = Descr,
-				  diskKBytes = KByte, 
-				  diskCapacity = Capacity},
-		       DiskId + 1}
-	      end, 1, disksup:get_disk_data())).
-
-
-%%%========================================================================
-%%% Internal functions
-%%%========================================================================
-node_update_disk_table([_, endOfTable]) -> 
-    ok;
-
-node_update_disk_table([{[?erlNodeName | IndexList], NodeStr}, _]) ->
-    Disks = rpc:call(list_to_atom(NodeStr), os_mon_mib, get_disks, 
-		     IndexList),
-    lists:foreach(fun(Disk) ->
-			  mnesia:dirty_write(Disk)
-		  end, Disks),
-    node_update_disk_table(otp_mib:erl_node_table(get_next, 
-						  IndexList, 
-						  [?erlNodeName, 
-						   ?erlNodeOutBytes])).
-
-get_cpu_load(X) when X == avg1; X == avg5; X == avg15 ->
-    case erlang:round(apply(cpu_sup, X, [])/2.56) of
-	Large when Large > 100 ->
-	    100;
-	Load ->
-	    Load
-    end.
-
-delete_all(Name) -> delete_all(mnesia:dirty_first(Name), Name).
-delete_all('$end_of_table', _Name) -> done;
-delete_all(Key, Name) ->
-    Next = mnesia:dirty_next(Name, Key),
-    ok = mnesia:dirty_delete({Name, Key}),
-    delete_all(Next, Name).
-
-pid_to_str(Pid) -> lists:flatten(io_lib:format("~w", [Pid])).
diff --git a/lib/os_mon/test/Makefile b/lib/os_mon/test/Makefile
index 6ac67e6bae..03c73b95ec 100644
--- a/lib/os_mon/test/Makefile
+++ b/lib/os_mon/test/Makefile
@@ -30,7 +30,6 @@ MODULES= \
 	disksup_SUITE \
 	memsup_SUITE \
 	cpu_sup_SUITE \
-	os_mon_mib_SUITE \
 	os_sup_SUITE \
 	os_mon_conf
 
@@ -87,7 +86,6 @@ release_tests_spec: make_emakefile
 	$(INSTALL_DIR) "$(RELSYSDIR)"
 	$(INSTALL_DATA) os_mon.spec os_mon.cover os_mon_smoke.spec \
 		$(EMAKEFILE) $(SOURCE) "$(RELSYSDIR)"
-	$(INSTALL_DATA) os_mon_mib_SUITE.cfg "$(RELSYSDIR)"
 
 ##	tar chf - *_SUITE_data | (cd "$(RELSYSDIR)"; tar xf -)
 
diff --git a/lib/os_mon/test/os_mon.spec b/lib/os_mon/test/os_mon.spec
index 4b4286b313..d292b258f3 100644
--- a/lib/os_mon/test/os_mon.spec
+++ b/lib/os_mon/test/os_mon.spec
@@ -1,2 +1 @@
 {suites,"../os_mon_test",all}.
-{config,"os_mon_mib_SUITE.cfg"}.
\ No newline at end of file
diff --git a/lib/os_mon/test/os_mon_mib_SUITE.cfg b/lib/os_mon/test/os_mon_mib_SUITE.cfg
deleted file mode 100644
index a33c23530b..0000000000
--- a/lib/os_mon/test/os_mon_mib_SUITE.cfg
+++ /dev/null
@@ -1,8 +0,0 @@
-%% -*- erlang -*-
-{snmp, [{start_agent,true},
-	{users,[{os_mon_mib_test,[snmpm_user_default,[]]}]},
-	{managed_agents,[{os_mon_mib_test,
-			  [os_mon_mib_test, {127,0,0,1}, 4000, []]}]},
-	{agent_sysname,"Test os_mon_mibs"},
-	{mgr_port,5001}
-       ]}.
diff --git a/lib/os_mon/test/os_mon_mib_SUITE.erl b/lib/os_mon/test/os_mon_mib_SUITE.erl
deleted file mode 100644
index f40d5f442c..0000000000
--- a/lib/os_mon/test/os_mon_mib_SUITE.erl
+++ /dev/null
@@ -1,578 +0,0 @@
-%%
-%% %CopyrightBegin%
-%%
-%% Copyright Ericsson AB 2004-2016. All Rights Reserved.
-%%
-%% Licensed under the Apache License, Version 2.0 (the "License");
-%% you may not use this file except in compliance with the License.
-%% You may obtain a copy of the License at
-%%
-%%     http://www.apache.org/licenses/LICENSE-2.0
-%%
-%% Unless required by applicable law or agreed to in writing, software
-%% distributed under the License is distributed on an "AS IS" BASIS,
-%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-%% See the License for the specific language governing permissions and
-%% limitations under the License.
-%%
-%% %CopyrightEnd%
-%%
--module(os_mon_mib_SUITE).
-
-%%-----------------------------------------------------------------
-%% This suite can no longer be executed standalone, i.e. it must be
-%% executed with common test. The reason is that ct_snmp is used
-%% instead of the snmp application directly. The suite requires a
-%% config file, os_mon_mib_SUITE.cfg, found in the same directory as
-%% the suite.
-%%
-%% Execute with:
-%% > ct_run -suite os_mon_mib_SUITE -config os_mon_mib_SUITE.cfg
-%%-----------------------------------------------------------------
-
--include_lib("common_test/include/ct.hrl").
--include_lib("os_mon/include/OTP-OS-MON-MIB.hrl").
--include_lib("snmp/include/snmp_types.hrl").
-
-% Test server specific exports
--export([all/0, suite/0, groups/0,
-         init_per_suite/1, end_per_suite/1]).
-
-
-% Test cases must be exported.
--export([update_load_table/1]).
-
--export([get_mem_sys_mark/1, get_mem_proc_mark/1, get_disk_threshold/1,
-         get_load_table/1, get_disk_table/1,
-         real_snmp_request/1, load_unload/1]).
-
--export([sys_tot_mem/1, sys_used_mem/1, large_erl_process/1,
-         large_erl_process_mem/1, cpu_load/1, cpu_load5/1, cpu_load15/1,
-         os_wordsize/1, sys_tot_mem64/1, sys_used_mem64/1,
-         large_erl_process_mem64/1, disk_descr/1, disk_kbytes/1,
-         disk_capacity/1]).
-
--export([otp_6351/1, otp_7441/1]).
-
--define(TRAP_UDP, 5000).
--define(AGENT_UDP, 4000).
--define(CONF_FILE_VER, [v2]).
--define(SYS_NAME, "Test os_mon_mibs").
--define(MAX_MSG_SIZE, 484).
--define(ENGINE_ID, "mgrEngine").
--define(MGR_PORT, 5001).
-
-%%---------------------------------------------------------------------
-
-suite() ->
-    [{ct_hooks,[ts_install_cth]},
-     {timetrap,{minutes,6}},
-     {require, snmp_mgr_agent, snmp}].
-
-all() -> 
-    [load_unload, get_mem_sys_mark, get_mem_proc_mark,
-     get_disk_threshold, get_load_table,
-     {group, get_next_load_table}, get_disk_table,
-     {group, get_next_disk_table}, real_snmp_request,
-     update_load_table, {group, tickets}].
-
-groups() -> 
-    [{tickets, [], [otp_6351, otp_7441]},
-     {get_next_load_table, [],
-      [sys_tot_mem, sys_used_mem, large_erl_process,
-       large_erl_process_mem, cpu_load, cpu_load5, cpu_load15,
-       os_wordsize, sys_tot_mem64, sys_used_mem64,
-       large_erl_process_mem64]},
-     {get_next_disk_table, [],
-      [disk_descr, disk_kbytes, disk_capacity]}].
-
-
-%%---------------------------------------------------------------------
-%%--------------------------------------------------------------------
-%% Function: init_per_suite(Config) -> Config
-%% Config - [tuple()]
-%%   A list of key/value pairs, holding the test case configuration.
-%% Description: Initiation before the whole suite
-%%
-%% Note: This function is free to add any key/value pairs to the Config
-%% variable, but should NOT alter/remove any existing entries.
-%%--------------------------------------------------------------------
-init_per_suite(Config) ->
-    application:start(sasl),
-    application:start(mnesia),
-    application:start(os_mon),
-
-    ok = ct_snmp:start(Config,snmp_mgr_agent),
-
-    %% Load the mibs that should be tested
-    otp_mib:load(snmp_master_agent),
-    os_mon_mib:load(snmp_master_agent),
-
-    Config.
-%%--------------------------------------------------------------------
-%% Function: end_per_suite(Config) -> _
-%% Config - [tuple()]
-%%   A list of key/value pairs, holding the test case configuration.
-%% Description: Cleanup after the whole suite
-%%--------------------------------------------------------------------
-end_per_suite(Config) ->
-    PrivDir = proplists:get_value(priv_dir, Config),
-    ConfDir = filename:join(PrivDir,"conf"),
-    DbDir = filename:join(PrivDir,"db"),
-    MgrDir = filename:join(PrivDir, "mgr"),
-
-    %% Uload mibs
-    snmpa:unload_mibs(snmp_master_agent,["OTP-OS-MON-MIB"]),
-    otp_mib:unload(snmp_master_agent),
-
-    %% Clean up
-    application:stop(snmp),
-    application:stop(mnesia),
-    application:stop(os_mon),
-
-    del_dir(ConfDir),
-    del_dir(DbDir),
-    (catch del_dir(MgrDir)),
-    ok.
-
-%%---------------------------------------------------------------------
-%% Test cases
-%%---------------------------------------------------------------------
-    
-%% Test to unload and the reload the OTP.mib
-load_unload(Config) when is_list(Config) ->
-    os_mon_mib:unload(snmp_master_agent),
-    os_mon_mib:load(snmp_master_agent),
-    ok.
-%%---------------------------------------------------------------------
-
-%% check os_mon_mib:update_load_table error handling
-update_load_table(Config) when is_list(Config) ->
-    Node = start_node(),
-    ok = rpc:call(Node,application,start,[sasl]),
-    ok = rpc:call(Node,application,start,[os_mon]),
-    ok = os_mon_mib:update_load_table(),
-    rpc:call(Node,application,stop,[os_mon]),
-    ok = os_mon_mib:update_load_table(),
-    stop_node(Node),
-    ok.
-
-%% like update_load_table, when memsup_system_only==true
-otp_6351(Config) when is_list(Config) ->
-    Node = start_node(),
-    ok = rpc:call(Node,application,start,[sasl]),
-    ok = rpc:call(Node,application,load,[os_mon]),
-    ok = rpc:call(Node,application,set_env,
-                  [os_mon,memsup_system_only,true]),
-    ok = rpc:call(Node,application,start,[os_mon]),
-    Res = rpc:call(Node,os_mon_mib,get_load,[Node]),
-    if
-        is_tuple(Res), element(1, Res)==loadTable ->
-            ok;
-        true ->
-            ct:fail(Res)
-    end,
-    rpc:call(Node,application,stop,[os_mon]),
-    stop_node(Node),
-    ok.
-
-
-%%---------------------------------------------------------------------
-%% Simulates a get call to test the instrumentation function
-%% for the loadMemorySystemWatermark variable.
-get_mem_sys_mark(Config) when is_list(Config) ->
-    case  os_mon_mib:mem_sys_mark(get) of
-        {value, SysMark} when is_integer(SysMark) ->
-            ok;
-        _ ->
-            ct:fail(sys_mark_value_not_integer)
-    end.
-%%---------------------------------------------------------------------
-%% Simulates a get call to test the instrumentation function
-%% for the loadMemoryErlProcWatermark variable.
-get_mem_proc_mark(Config) when is_list(Config) ->
-    case os_mon_mib:mem_proc_mark(get) of
-        {value, ProcMark} when is_integer(ProcMark) ->
-            ok;
-        _ ->
-            ct:fail(proc_mark_value_not_integer)
-    end.
-%%---------------------------------------------------------------------
-%% Simulates a get call to test the instrumentation function
-%% for the diskAlmostFullThreshold variable.
-get_disk_threshold(Config) when is_list(Config) ->
-    case os_mon_mib:disk_threshold(get) of
-        {value, ProcMark} when is_integer(ProcMark) ->
-            ok;
-        _ ->
-            ct:fail(disk_threshold_value_not_integer)
-    end.
-%%---------------------------------------------------------------------
-
-%%% Note that when we have a string key, as in loadTable, the
-%%% instrumentation will deal with the [length(String), String]. We
-%%% have to know about this, when short cutting SNMP and calling
-%%% instrumentation functions directly as done in most test cases in
-%%% this test suite
-
-%% Simulates get calls to test the instrumentation function
-%% for the loadTable
-get_load_table(Config) when is_list(Config) ->
-
-    NodeStr = atom_to_list(node()),
-    NodeLen = length(NodeStr),
-
-    {_, _, {Pid, _}} = memsup:get_memory_data(),
-    PidStr = lists:flatten(io_lib:format("~w", [Pid])),
-    [{value, NodeStr},{value, PidStr}] =
-    os_mon_mib:load_table(get, [NodeLen  | NodeStr],
-                          [?loadErlNodeName, ?loadLargestErlProcess]),
-
-    Values = os_mon_mib:load_table(get, [NodeLen  | NodeStr] ,
-                                   [?loadSystemTotalMemory,
-                                    ?loadSystemUsedMemory,
-                                    ?loadLargestErlProcessUsedMemory,
-                                    ?loadCpuLoad,
-                                    ?loadCpuLoad5,
-                                    ?loadCpuLoad15,
-                                    ?loadOsWordsize,
-                                    ?loadSystemTotalMemory64,
-                                    ?loadSystemUsedMemory64,
-                                    ?loadLargestErlProcessUsedMemory64]),
-
-    IsInt = fun({value, Val}) when is_integer(Val) ->
-                    true;
-               (_) ->
-                    false
-            end,
-
-    NewValues = lists:filter(IsInt, Values),
-
-    case length(NewValues) of
-        10 ->
-            ok;
-        _ ->
-            ct:fail(value_not_integer)
-    end,
-
-    [{noValue,noSuchInstance}, {noValue,noSuchInstance},
-     {noValue,noSuchInstance}, {noValue,noSuchInstance},
-     {noValue,noSuchInstance}, {noValue,noSuchInstance},
-     {noValue,noSuchInstance}, {noValue,noSuchInstance},
-     {noValue,noSuchInstance}, {noValue,noSuchInstance},
-     {noValue,noSuchInstance}, {noValue,noSuchInstance}] =
-    os_mon_mib:load_table(get, [3, 102, 111, 111],
-                          [?loadErlNodeName,
-                           ?loadSystemTotalMemory,
-                           ?loadSystemUsedMemory,
-                           ?loadLargestErlProcess,
-                           ?loadLargestErlProcessUsedMemory,
-                           ?loadCpuLoad,
-                           ?loadCpuLoad5,
-                           ?loadCpuLoad15,
-                           ?loadOsWordsize,
-                           ?loadSystemTotalMemory64,
-                           ?loadSystemUsedMemory64,
-                           ?loadLargestErlProcessUsedMemory64]),
-
-    ok.
-%%---------------------------------------------------------------------
-
-sys_tot_mem(Config) when is_list(Config) ->
-    [{[?loadSystemTotalMemory, Len | NodeStr], Mem}] =
-    os_mon_mib:load_table(get_next, [], [?loadSystemTotalMemory]),
-    Len = length(NodeStr),
-    true = lists:member(list_to_atom(NodeStr), [node() | nodes()]),
-
-    case Mem of
-        Mem when is_integer(Mem) ->
-            ok;
-        _ ->
-            ct:fail(sys_tot_mem_value_not_integer)
-    end.
-
-sys_used_mem(Config) when is_list(Config) ->
-    [{[?loadSystemUsedMemory, Len | NodeStr], Mem}] =
-    os_mon_mib:load_table(get_next,[], [?loadSystemUsedMemory]),
-    Len = length(NodeStr),
-    true = lists:member(list_to_atom(NodeStr), [node() | nodes()]),
-
-    case Mem of
-        Mem when is_integer(Mem) ->
-            ok;
-        _ ->
-            ct:fail(sys_used_mem_value_not_integer)
-    end.
-
-large_erl_process(Config) when is_list(Config) ->
-    {_, _, {Pid, _}} = memsup:get_memory_data(),
-    PidStr = lists:flatten(io_lib:format("~w", [Pid])),
-    [{[?loadLargestErlProcess, Len | NodeStr], PidStr}] =
-    os_mon_mib:load_table(get_next,[], [?loadLargestErlProcess]),
-    Len = length(NodeStr),
-    true = lists:member(list_to_atom(NodeStr), [node() | nodes()]),
-    ok.
-
-large_erl_process_mem(Config) when is_list(Config) ->
-
-    [{[?loadLargestErlProcessUsedMemory, Len | NodeStr], Mem}] =
-    os_mon_mib:load_table(get_next,[],
-                          [?loadLargestErlProcessUsedMemory]),
-    Len = length(NodeStr),
-    true = lists:member(list_to_atom(NodeStr), [node() | nodes()]),
-
-    case Mem of
-        Mem when is_integer(Mem) ->
-            ok;
-        _ ->
-            ct:fail(erl_pid_mem_value_not_integer)
-    end.
-
-cpu_load(Config) when is_list(Config) ->
-    [{[?loadCpuLoad, Len | NodeStr], Load}] =
-    os_mon_mib:load_table(get_next,[], [?loadCpuLoad]),
-    Len = length(NodeStr),
-    true = lists:member(list_to_atom(NodeStr), [node() | nodes()]),
-
-    case Load of
-        Load when is_integer(Load) ->
-            ok;
-        _ ->
-            ct:fail(cpu_load_value_not_integer)
-    end.
-
-cpu_load5(Config) when is_list(Config) ->
-    [{[?loadCpuLoad5, Len | NodeStr], Load}] =
-    os_mon_mib:load_table(get_next,[], [?loadCpuLoad5]),
-    Len = length(NodeStr),
-    true = lists:member(list_to_atom(NodeStr), [node() | nodes()]),
-
-    case Load of
-        Load when is_integer(Load) ->
-            ok;
-        _ ->
-            ct:fail(cpu_load5_value_not_integer)
-    end.
-
-cpu_load15(Config) when is_list(Config) ->
-    [{[?loadCpuLoad15, Len | NodeStr], Load}] =
-    os_mon_mib:load_table(get_next,[], [?loadCpuLoad15]),
-    Len = length(NodeStr),
-    true = lists:member(list_to_atom(NodeStr), [node() | nodes()]),
-
-    case Load of
-        Load when is_integer(Load) ->
-            ok;
-        _ ->
-            ct:fail(cpu_load15_value_not_integer)
-    end.
-
-os_wordsize(Config) when is_list(Config) ->
-    [{[?loadOsWordsize, Len | NodeStr], Wordsize}] =
-    os_mon_mib:load_table(get_next,[], [?loadOsWordsize]),
-    Len = length(NodeStr),
-    true = lists:member(list_to_atom(NodeStr), [node() | nodes()]),
-
-    case Wordsize of
-        Wordsize when is_integer(Wordsize) ->
-            ok;
-        _ ->
-            ct:fail(os_wordsize_value_not_integer)
-    end.
-
-sys_tot_mem64(Config) when is_list(Config) ->
-    [{[?loadSystemTotalMemory64, Len | NodeStr], Mem}] =
-    os_mon_mib:load_table(get_next, [], [?loadSystemTotalMemory64]),
-    Len = length(NodeStr),
-    true = lists:member(list_to_atom(NodeStr), [node() | nodes()]),
-
-    case Mem of
-        Mem when is_integer(Mem) ->
-            ok;
-        _ ->
-            ct:fail(sys_tot_mem_value_not_integer)
-    end.
-
-sys_used_mem64(Config) when is_list(Config) ->
-    [{[?loadSystemUsedMemory64, Len | NodeStr], Mem}] =
-    os_mon_mib:load_table(get_next,[], [?loadSystemUsedMemory64]),
-    Len = length(NodeStr),
-    true = lists:member(list_to_atom(NodeStr), [node() | nodes()]),
-
-    case Mem of
-        Mem when is_integer(Mem) ->
-            ok;
-        _ ->
-            ct:fail(sys_used_mem_value_not_integer)
-    end.
-
-large_erl_process_mem64(Config) when is_list(Config) ->
-
-    [{[?loadLargestErlProcessUsedMemory64, Len | NodeStr], Mem}] =
-    os_mon_mib:load_table(get_next,[],
-                          [?loadLargestErlProcessUsedMemory64]),
-    Len = length(NodeStr),
-    true = lists:member(list_to_atom(NodeStr), [node() | nodes()]),
-
-    case Mem of
-        Mem when is_integer(Mem) ->
-            ok;
-        _ ->
-            ct:fail(erl_pid_mem_value_not_integer)
-    end.
-%%---------------------------------------------------------------------
-%% Simulates get calls to test the instrumentation function
-%% for the diskTable.
-get_disk_table(Config) when is_list(Config) ->
-
-    DiskData = disksup:get_disk_data(),
-    DiskDataLen = length(DiskData),
-
-    if
-        DiskDataLen > 0 ->
-            [{value, Value}] =
-            os_mon_mib:disk_table(get, [1,1], [?diskDescr]),
-
-            case is_list(Value) of
-                true ->
-                    ok;
-                false ->
-                    ct:fail(value_not_a_string)
-            end,
-
-            Values = os_mon_mib:disk_table(get, [1,1],
-                                           [?diskId,
-                                            ?diskKBytes,
-                                            ?diskCapacity]),
-
-            IsInt = fun({value, Val}) when is_integer(Val) ->
-                            true;
-                       (_) ->
-                            false
-                    end,
-
-            NewValues = lists:filter(IsInt, Values),
-
-            case length(NewValues) of
-                3 ->
-                    ok;
-                _ ->
-                    ct:fail(value_not_integer)
-            end
-    end,
-
-    [{noValue,noSuchInstance}, {noValue,noSuchInstance},
-     {noValue,noSuchInstance}, {noValue,noSuchInstance}] =
-    os_mon_mib:disk_table(get, [1, DiskDataLen + 1], [?diskId,
-                                                      ?diskDescr,
-                                                      ?diskKBytes,
-                                                      ?diskCapacity]),
-
-    ok.
-
-%%---------------------------------------------------------------------
-
-disk_descr(Config) when is_list(Config) ->
-    [{[?diskDescr, 1,1], Descr}] =
-    os_mon_mib:disk_table(get_next, [], [?diskDescr]),
-
-    case Descr of
-        Descr when is_list(Descr) ->
-            ok;
-        _ ->
-            ct:fail(disk_descr_value_not_a_string)
-    end.
-
-disk_kbytes(Config) when is_list(Config) ->
-    [{[?diskKBytes, 1,1], Kbytes}] =
-    os_mon_mib:disk_table(get_next,[], [?diskKBytes]),
-
-    case Kbytes of
-        Kbytes when is_integer(Kbytes) ->
-            ok;
-        _ ->
-            ct:fail(disk_kbytes_value_not_integer)
-    end.
-
-
-disk_capacity(Config) when is_list(Config) ->
-    [{[?diskCapacity, 1,1], Capacity}] =
-    os_mon_mib:disk_table(get_next,[], [?diskCapacity]),
-
-    case Capacity of
-        Capacity when is_integer(Capacity) ->
-            ok;
-        _ ->
-            ct:fail(disk_capacity_value_not_integer)
-    end.
-
-%%---------------------------------------------------------------------
-%% Starts an snmp manager and sends a real snmp-request. i.e.
-%% sends a udp message on the correct format.
-real_snmp_request(Config) when is_list(Config) ->
-    NodStr = atom_to_list(node()),
-    Len = length(NodStr),
-    {_, _, {Pid, _}} = memsup:get_memory_data(),
-    PidStr = lists:flatten(io_lib:format("~w", [Pid])),
-    io:format("FOO: ~p~n", [PidStr]),
-    ok = snmp_get([?loadEntry ++
-                   [?loadLargestErlProcess, Len | NodStr]],
-                  PidStr),
-    ok = snmp_get_next([?loadEntry ++
-                        [?loadSystemUsedMemory, Len | NodStr]],
-                       ?loadEntry ++ [?loadSystemUsedMemory + 1, Len
-                                      | NodStr], PidStr),
-    ok = snmp_set([?loadEntry ++ [?loadLargestErlProcess,  Len | NodStr]],
-                  s, "<0.101.0>", Config),
-    ok.
-
-%% Starts an snmp manager and requests total memory. Was previously
-%% integer32 which was errornous on 64 bit machines.
-otp_7441(Config) when is_list(Config) ->
-    NodStr = atom_to_list(node()),
-    Len = length(NodStr),
-    Oids = [Oid|_] = [?loadEntry ++ [?loadSystemTotalMemory, Len | NodStr]],
-    {noError,0,[#varbind{oid = Oid, variabletype = 'Unsigned32'}]} =
-    ct_snmp:get_values(os_mon_mib_test, Oids, snmp_mgr_agent),
-
-    ok.
-
-%%---------------------------------------------------------------------
-%% Internal functions
-%%---------------------------------------------------------------------
-start_node() ->
-    Pa = filename:dirname(code:which(?MODULE)),
-    {ok,Node} = test_server:start_node(testnisse, slave, [{args, " -pa " ++ Pa}]),
-    Node.
-
-stop_node(Node) ->
-    test_server:stop_node(Node).
-
-del_dir(Dir) ->
-    io:format("Deleting: ~s~n",[Dir]),
-    {ok, Files} = file:list_dir(Dir),
-    FullPathFiles = lists:map(fun(File) -> filename:join(Dir, File) end,
-                              Files),
-    lists:foreach(fun file:delete/1, FullPathFiles),
-    file:del_dir(Dir).
-
-%%---------------------------------------------------------------------
-snmp_get(Oids = [Oid |_], Result) ->
-    {noError,0,[#varbind{oid = Oid,
-                         variabletype = 'OCTET STRING',
-                         value = Result}]} =
-    ct_snmp:get_values(os_mon_mib_test, Oids, snmp_mgr_agent),
-    ok.
-
-snmp_get_next(Oids, NextOid, Result) ->
-    {noError,0,[#varbind{oid = NextOid,
-                         variabletype = 'OCTET STRING',
-                         value = Result}]} =
-    ct_snmp:get_next_values(os_mon_mib_test, Oids, snmp_mgr_agent),
-    ok.
-
-snmp_set(Oid, ValuType, Value, Config) ->
-    {notWritable, _, _} =
-    ct_snmp:set_values(os_mon_mib_test, [{Oid, ValuType, Value}],
-                       snmp_mgr_agent, Config),
-    ok.
diff --git a/lib/otp_mibs/AUTHORS b/lib/otp_mibs/AUTHORS
deleted file mode 100644
index 3f570082f4..0000000000
--- a/lib/otp_mibs/AUTHORS
+++ /dev/null
@@ -1,8 +0,0 @@
-Original Authors and Contributors: 
-
-Martin Bj�rklund
-Lars Thorsen
-Claes Wikstr�m
-Kent Boortz
-Bj�rn Gustavsson
-Ingela Anderton - Created otp_mibs app. to eliminate SASL's SNMP dependence.
diff --git a/lib/otp_mibs/Makefile b/lib/otp_mibs/Makefile
deleted file mode 100644
index 64bd683c7a..0000000000
--- a/lib/otp_mibs/Makefile
+++ /dev/null
@@ -1,37 +0,0 @@
-#
-# %CopyrightBegin%
-# 
-# Copyright Ericsson AB 2003-2016. All Rights Reserved.
-# 
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-# 
-# %CopyrightEnd%
-#
-include $(ERL_TOP)/make/target.mk
-include $(ERL_TOP)/make/$(TARGET)/otp.mk
-
-# ----------------------------------------------------
-# Macros
-# ----------------------------------------------------
-
-SUB_DIRECTORIES = src mibs doc/src
-
-include vsn.mk
-VSN = $(OTP_MIBS_VSN)
-
-SPECIAL_TARGETS =
-
-# ----------------------------------------------------
-# Default Subdir Targets
-# ----------------------------------------------------
-include $(ERL_TOP)/make/otp_subdir.mk
diff --git a/lib/otp_mibs/doc/html/.gitignore b/lib/otp_mibs/doc/html/.gitignore
deleted file mode 100644
index e69de29bb2..0000000000
--- a/lib/otp_mibs/doc/html/.gitignore
+++ /dev/null
diff --git a/lib/otp_mibs/doc/man3/.gitignore b/lib/otp_mibs/doc/man3/.gitignore
deleted file mode 100644
index e69de29bb2..0000000000
--- a/lib/otp_mibs/doc/man3/.gitignore
+++ /dev/null
diff --git a/lib/otp_mibs/doc/pdf/.gitignore b/lib/otp_mibs/doc/pdf/.gitignore
deleted file mode 100644
index e69de29bb2..0000000000
--- a/lib/otp_mibs/doc/pdf/.gitignore
+++ /dev/null
diff --git a/lib/otp_mibs/doc/src/Makefile b/lib/otp_mibs/doc/src/Makefile
deleted file mode 100644
index 22c3c127ac..0000000000
--- a/lib/otp_mibs/doc/src/Makefile
+++ /dev/null
@@ -1,116 +0,0 @@
-#
-# %CopyrightBegin%
-#
-# Copyright Ericsson AB 2003-2018. All Rights Reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# %CopyrightEnd%
-#
-
-include $(ERL_TOP)/make/target.mk
-include $(ERL_TOP)/make/$(TARGET)/otp.mk
-
-# ----------------------------------------------------
-# Application version
-# ----------------------------------------------------
-include ../../vsn.mk
-VSN=$(OTP_MIBS_VSN)
-APPLICATION=otp_mibs
-
-# ----------------------------------------------------
-# Release directory specification
-# ----------------------------------------------------
-RELSYSDIR = $(RELEASE_PATH)/lib/$(APPLICATION)-$(VSN)
-# ----------------------------------------------------
-# Target Specs
-# ----------------------------------------------------
-XML_APPLICATION_FILES = ref_man.xml
-XML_REF3_FILES = otp_mib.xml
-
-XML_PART_FILES = part.xml
-XML_CHAPTER_FILES = \
-	introduction.xml \
-	mibs.xml \
-	notes.xml
-
-BOOK_FILES = book.xml
-
-XML_FILES = \
-	$(BOOK_FILES) $(XML_CHAPTER_FILES) \
-	$(XML_PART_FILES) $(XML_REF3_FILES) $(XML_APPLICATION_FILES)
-
-GIF_FILES =
-
-# ----------------------------------------------------
-
-HTML_FILES = $(XML_APPLICATION_FILES:%.xml=$(HTMLDIR)/%.html) \
-	$(XML_PART_FILES:%.xml=$(HTMLDIR)/%.html)
-
-INFO_FILE = ../../info
-
-MAN3_FILES = $(XML_REF3_FILES:%.xml=$(MAN3DIR)/%.3)
-
-HTML_REF_MAN_FILE = $(HTMLDIR)/index.html
-
-TOP_PDF_FILE = $(PDFDIR)/$(APPLICATION)-$(VSN).pdf
-
-# ----------------------------------------------------
-# FLAGS
-# ----------------------------------------------------
-XML_FLAGS +=
-DVIPS_FLAGS +=
-
-# ----------------------------------------------------
-# Targets
-# ----------------------------------------------------
-$(HTMLDIR)/%.gif: %.gif
-	$(INSTALL_DATA) $< $@
-
-docs: pdf html man
-
-$(TOP_PDF_FILE): $(XML_FILES)
-
-pdf: $(TOP_PDF_FILE)
-
-html: gifs $(HTML_REF_MAN_FILE)
-
-man: $(MAN3_FILES)
-
-gifs: $(GIF_FILES:%=$(HTMLDIR)/%)
-
-debug opt:
-
-clean clean_docs:
-	rm -rf $(HTMLDIR)/*
-	rm -rf $(XMLDIR)
-	rm -f $(MAN3DIR)/*
-	rm -f $(TOP_PDF_FILE) $(TOP_PDF_FILE:%.pdf=%.fo)
-	rm -f errs core *~
-
-# ----------------------------------------------------
-# Release Target
-# ----------------------------------------------------
-include $(ERL_TOP)/make/otp_release_targets.mk
-
-release_docs_spec: docs
-	$(INSTALL_DIR) "$(RELSYSDIR)/doc/pdf"
-	$(INSTALL_DATA) $(TOP_PDF_FILE) "$(RELSYSDIR)/doc/pdf"
-	$(INSTALL_DIR) "$(RELSYSDIR)/doc/html"
-	$(INSTALL_DATA) $(HTMLDIR)/* \
-		"$(RELSYSDIR)/doc/html"
-	$(INSTALL_DATA) $(INFO_FILE) "$(RELSYSDIR)"
-	$(INSTALL_DIR) "$(RELEASE_PATH)/man/man3"
-	$(INSTALL_DATA) $(MAN3DIR)/* "$(RELEASE_PATH)/man/man3"
-
-release_spec:
diff --git a/lib/otp_mibs/doc/src/book.xml b/lib/otp_mibs/doc/src/book.xml
deleted file mode 100644
index 482da46876..0000000000
--- a/lib/otp_mibs/doc/src/book.xml
+++ /dev/null
@@ -1,49 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE book SYSTEM "book.dtd">
-
-<book xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header titlestyle="normal">
-    <copyright>
-      <year>2003</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>OTP_Mibs</title>
-    <prepared>Ingela Anderton</prepared>
-    <docno></docno>
-    <date>2003-04-15</date>
-    <rev>A</rev>
-  </header>
-  <insidecover>
-  </insidecover>
-  <pagetext>OTP_Mibs application</pagetext>
-  <preamble>
-    <contents level="2"></contents>
-  </preamble>
-  <parts lift="no">
-    <xi:include href="part.xml"/>
-  </parts>
-  <applications>
-    <xi:include href="ref_man.xml"/>
-  </applications>
-  <releasenotes>
-    <xi:include href="notes.xml"/>
-  </releasenotes>
-  <index></index>
-</book>
-
-
diff --git a/lib/otp_mibs/doc/src/introduction.xml b/lib/otp_mibs/doc/src/introduction.xml
deleted file mode 100644
index 7046cbb8ae..0000000000
--- a/lib/otp_mibs/doc/src/introduction.xml
+++ /dev/null
@@ -1,47 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE chapter SYSTEM "chapter.dtd">
-
-<chapter>
-  <header>
-    <copyright>
-      <year>2003</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>Introduction</title>
-    <prepared>Ingela Anderton</prepared>
-    <docno></docno>
-    <date>2003-05-19</date>
-    <rev>A</rev>
-    <file>introduction.xml</file>
-  </header>
-
-  <section>
-    <title>Purpose</title>
-    <p>The purpose of the OTP_Mibs application is to provide an SNMP
-      management information base for Erlang nodes.</p>
-  </section>
-
-  <section>
-    <title>Pre-requisites</title>
-    <p>It is assumed that the reader is familiar with the Erlang
-      programming language, concepts of OTP and has a basic knowledge
-      of SNMP.</p>
-  </section>
-</chapter>
-
-
diff --git a/lib/otp_mibs/doc/src/mibs.xml b/lib/otp_mibs/doc/src/mibs.xml
deleted file mode 100644
index a32d5ea5f5..0000000000
--- a/lib/otp_mibs/doc/src/mibs.xml
+++ /dev/null
@@ -1,71 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE chapter SYSTEM "chapter.dtd">
-
-<chapter>
-  <header>
-    <copyright>
-      <year>2003</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>Mibs</title>
-    <prepared>Ingela Anderton</prepared>
-    <docno></docno>
-    <date>2003-05-19</date>
-    <rev>A</rev>
-    <file>mibs.xml</file>
-  </header>
-
-  <section>
-    <title>Structure</title>
-    <p>The OTP mibs are stored in the
-      <c>$OTP_ROOT/lib/otp_mibs/mibs/</c> directory. They
-      are defined in SNMPv2 SMI syntax. An SNMPv1 version of the mib is
-      delivered in the <c>mibs/v1</c> directory. The compiled MIB is
-      located under <c>priv/mibs</c>, and the generated <c>.hrl</c>
-      file under the <c>include</c> directory. To compile a MIB that
-      IMPORTS a MIB in the OTP_Mibs application, give the option
-      <c>{il, ["otp_mibs/priv/mibs"]}</c> to the MIB compiler.</p>
-  </section>
-
-  <section>
-    <title>OTP-MIB</title>
-    <p>The OTP-MIB mib represents information about Erlang nodes such as
-      node name, number of running processes, virtual machine version
-      etc. If the MIB should be used in a system, it should be
-      loaded into an SNMP agent by using the API function
-      <c>otp_mib:load/1</c>.</p>
-  </section>
-
-  <section>
-    <title>OTP-REG</title>
-    <p>The OTP-REG mib defines the unique OTP subtree of object
-      identifiers under the Ericsson subtree. Under the OTP subtree
-      several object identifiers are defined. This module is typically
-      included by OTP applications defining their own mibs, or ASN.1
-      modules in general, that require unique object identifiers under
-      the OTP subtree.</p>
-  </section>
-
-  <section>
-    <title>OTP-TC</title>
-    <p>The OTP-TC mib provides the textual convention datatype
-      <c>OwnerString</c>.</p>
-  </section>
-</chapter>
-
-
diff --git a/lib/otp_mibs/doc/src/notes.xml b/lib/otp_mibs/doc/src/notes.xml
deleted file mode 100644
index 443f08f1e1..0000000000
--- a/lib/otp_mibs/doc/src/notes.xml
+++ /dev/null
@@ -1,327 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE chapter SYSTEM "chapter.dtd">
-
-<chapter>
-  <header>
-    <copyright>
-      <year>2004</year><year>2018</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>OTP_Mibs Release Notes</title>
-    <prepared>otp_appnotes</prepared>
-    <docno>nil</docno>
-    <date>nil</date>
-    <rev>nil</rev>
-    <file>notes.xml</file>
-  </header>
-  <p>This document describes the changes made to the OTP_Mibs
-    application.</p>
-
-<section><title>Otp_Mibs 1.2.1</title>
-
-    <section><title>Fixed Bugs and Malfunctions</title>
-      <list>
-        <item>
-          <p>
-	    Improved documentation.</p>
-          <p>
-	    Own Id: OTP-15190</p>
-        </item>
-      </list>
-    </section>
-
-</section>
-
-<section><title>Otp_Mibs 1.2</title>
-
-    <section><title>Improvements and New Features</title>
-      <list>
-        <item>
-          <p>
-	    The otp_mibs application has been deprecated and will be
-	    removed in a future release.</p>
-          <p>
-	    Own Id: OTP-15141</p>
-        </item>
-      </list>
-    </section>
-
-</section>
-
-<section><title>Otp_Mibs 1.1.2</title>
-
-    <section><title>Fixed Bugs and Malfunctions</title>
-      <list>
-        <item>
-	    <p> Removed all old unused files in the documentation.
-	    </p>
-          <p>
-	    Own Id: OTP-14475 Aux Id: ERL-409, PR-1493 </p>
-        </item>
-      </list>
-    </section>
-
-</section>
-
-<section><title>Otp_Mibs 1.1.1</title>
-
-    <section><title>Improvements and New Features</title>
-      <list>
-        <item>
-          <p>
-	    Internal changes</p>
-          <p>
-	    Own Id: OTP-13551</p>
-        </item>
-      </list>
-    </section>
-
-</section>
-
-<section><title>Otp_Mibs 1.1</title>
-
-    <section><title>Improvements and New Features</title>
-      <list>
-        <item>
-          <p>
-	    Change license text from Erlang Public License to Apache
-	    Public License v2</p>
-          <p>
-	    Own Id: OTP-12845</p>
-        </item>
-      </list>
-    </section>
-
-</section>
-
-<section><title>Otp_Mibs 1.0.10</title>
-
-    <section><title>Fixed Bugs and Malfunctions</title>
-      <list>
-        <item>
-          <p>
-	    Make sure the clean rule for ssh, ssl, eunit and otp_mibs
-	    actually removes generated files.</p>
-          <p>
-	    Own Id: OTP-12200</p>
-        </item>
-      </list>
-    </section>
-
-</section>
-
-<section><title>Otp_Mibs 1.0.9</title>
-
-    <section><title>Fixed Bugs and Malfunctions</title>
-      <list>
-        <item>
-          <p>
-	    Add type based integer value truncation/reset.</p>
-          <p>
-	    This fixes errors when querying e.g. the
-	    erlNodeReductions, erlNodeInBytes and erlNodeOutBytes
-	    objects in long-running Erlang/OTP systems.</p>
-          <p>
-	    Update types of applicable MIB objects to 64bit based
-	    types.</p>
-          <p>
-	    Potential incompatibility: Type change of Counter32 to
-	    Counter64 in OTP-MIB.mib</p>
-          <p>
-	    (Thanks to Tobias Schlager)</p>
-          <p>
-	    *** POTENTIAL INCOMPATIBILITY ***</p>
-          <p>
-	    Own Id: OTP-11203</p>
-        </item>
-        <item>
-          <p>
-	    Application upgrade (appup) files are corrected for the
-	    following applications: </p>
-          <p>
-	    <c>asn1, common_test, compiler, crypto, debugger,
-	    dialyzer, edoc, eldap, erl_docgen, et, eunit, gs, hipe,
-	    inets, observer, odbc, os_mon, otp_mibs, parsetools,
-	    percept, public_key, reltool, runtime_tools, ssh,
-	    syntax_tools, test_server, tools, typer, webtool, wx,
-	    xmerl</c></p>
-          <p>
-	    A new test utility for testing appup files is added to
-	    test_server. This is now used by most applications in
-	    OTP.</p>
-          <p>
-	    (Thanks to Tobias Schlager)</p>
-          <p>
-	    Own Id: OTP-11744</p>
-        </item>
-      </list>
-    </section>
-
-</section>
-
-<section><title>Otp_Mibs 1.0.8</title>
-
-    <section><title>Improvements and New Features</title>
-      <list>
-        <item>
-          <p>
-	    Misc build updates</p>
-          <p>
-	    Own Id: OTP-10784</p>
-        </item>
-      </list>
-    </section>
-
-</section>
-
-<section><title>Otp_Mibs 1.0.7</title>
-
-    <section><title>Improvements and New Features</title>
-      <list>
-        <item>
-          <p>
-	    Tuple funs (a two-element tuple with a module name and a
-	    function) are now officially deprecated and will be
-	    removed in R16. Use '<c>fun M:F/A</c>' instead. To make
-	    you aware that your system uses tuple funs, the very
-	    first time a tuple fun is applied, a warning will be sent
-	    to the error logger.</p>
-          <p>
-	    Own Id: OTP-9649</p>
-        </item>
-      </list>
-    </section>
-
-</section>
-
-<section><title>Otp_Mibs 1.0.6</title>
-
-    <section><title>Improvements and New Features</title>
-      <list>
-        <item>
-          <p>
-	    The documentation is now built with open source tools
-	    (xsltproc and fop) that exists on most platforms. One
-	    visible change is that the frames are removed.</p>
-          <p>
-	    Own Id: OTP-8201</p>
-        </item>
-      </list>
-    </section>
-
-</section>
-
-<section><title>Otp_Mibs 1.0.5</title>
-
-    <section><title>Improvements and New Features</title>
-      <list>
-        <item>
-	    <p>The copyright notices have been updated.</p>
-          <p>
-	    Own Id: OTP-7851</p>
-        </item>
-      </list>
-    </section>
-
-</section>
-
-  <section>
-    <title>Otp_Mibs 1.0.4.1</title>
-
-    <section>
-      <title>Improvements and New Features</title>
-      <list type="bulleted">
-        <item>
-          <p>Minor Makefile changes.</p>
-          <p>Own Id: OTP-6689</p>
-        </item>
-      </list>
-    </section>
-  </section>
-
-  <section>
-    <title>OTP_Mibs 1.0.4</title>
-
-    <section>
-      <title>Improvements and New Features</title>
-      <list type="bulleted">
-        <item>
-          <p>Replaced calls to deprecated functions in <c>snmp</c>
-            with calls to the equivalent functions in <c>snmpa</c>.</p>
-          <p>Own Id: OTP-6112</p>
-        </item>
-      </list>
-    </section>
-  </section>
-
-  <section>
-    <title>OTP_Mibs 1.0.3</title>
-
-    <section>
-      <title>Improvements and New Features</title>
-      <list type="bulleted">
-        <item>
-          <p>The <c>otp_mib</c> module has been cleaned up to improve the
-            maintainability. It should have no effect on the
-            functionality of the OTP_Mibs application.</p>
-          <p>Own Id: OTP-4982</p>
-        </item>
-      </list>
-    </section>
-  </section>
-
-  <section>
-    <title>OTP_Mibs 1.0.2</title>
-
-    <section>
-      <title>Fixed Bugs and Malfunctions</title>
-      <list type="bulleted">
-        <item>
-          <p>Incorrect <c>.app</c> file (missing mandatory
-            <c>registered</c>).</p>
-          <p>Own Id: OTP-4823 Aux Id: Seq8145, OTP-4801 </p>
-        </item>
-      </list>
-    </section>
-  </section>
-
-  <section>
-    <title>OTP_Mibs 1.0.1</title>
-
-    <section>
-      <title>Fixed Bugs and Malfunctions</title>
-      <list type="bulleted">
-        <item>
-          <p>Missing <c>.app</c> and <c>appup</c> files in <c>ebin</c>.</p>
-          <p>Own Id: OTP-4801 Aux Id: Seq8145 </p>
-        </item>
-      </list>
-    </section>
-  </section>
-
-  <section>
-    <title>OTP_Mibs 1.0</title>
-    <p>The OTP mibs that where included in the SASL application
-      have been moved to this new application OTP_Mibs. The OTP
-      mibs had no real connection to SASL and it is desirable that
-      the core of Erlang/OTP is not dependent on SNMP.</p>
-    <p>Own Id: OTP-4686</p>
-  </section>
-</chapter>
-
-
diff --git a/lib/otp_mibs/doc/src/otp_mib.xml b/lib/otp_mibs/doc/src/otp_mib.xml
deleted file mode 100644
index 530c529c69..0000000000
--- a/lib/otp_mibs/doc/src/otp_mib.xml
+++ /dev/null
@@ -1,73 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE erlref SYSTEM "erlref.dtd">
-
-<erlref>
-  <header>
-    <copyright>
-      <year>2003</year><year>2018</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>otp_mib</title>
-    <prepared>Ingela Anderton</prepared>
-    <docno></docno>
-    <date></date>
-    <rev></rev>
-  </header>
-  <module>otp_mib</module>
-  <modulesummary>Handles the OTP-MIB</modulesummary>
-  <description>
-    <p>The SNMP application should be used to start an SNMP agent. Then
-      the API functions below can be used to load/unload the OTP-MIB
-      into/from the agent. The instrumentation of the OTP-MIB uses
-    Mnesia, hence Mnesia must be started prior to loading the OTP-MIB.</p>
-    <warning>
-      <p>This application has been deprecated and will be removed in a furture release.</p>
-    </warning>
-  </description>
-  <funcs>
-    <func>
-      <name>load(Agent) -> ok | {error, Reason}</name>
-      <fsummary>Load the OTP-MIB</fsummary>
-      <type>
-        <v>Agent = pid() | atom()</v>
-        <v>Reason = term()</v>
-      </type>
-      <desc>
-        <p>Loads the OTP-MIB.</p>
-      </desc>
-    </func>
-    <func>
-      <name>unload(Agent) -> ok | {error, Reason}</name>
-      <fsummary>Unload the OTP-MIB</fsummary>
-      <type>
-        <v>Agent = pid() | atom()</v>
-        <v>Reason = term()</v>
-      </type>
-      <desc>
-        <p>Unloads the OTP-MIB.</p>
-      </desc>
-    </func>
-  </funcs>
-
-  <section>
-    <title>See Also</title>
-    <p>snmp(3)</p>
-  </section>
-</erlref>
-
-
diff --git a/lib/otp_mibs/doc/src/ref_man.xml b/lib/otp_mibs/doc/src/ref_man.xml
deleted file mode 100644
index 06c5aadcd9..0000000000
--- a/lib/otp_mibs/doc/src/ref_man.xml
+++ /dev/null
@@ -1,38 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE application SYSTEM "application.dtd">
-
-<application xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>2003</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>OTP_Mibs Reference Manual</title>
-    <prepared>Ingela Anderton</prepared>
-    <docno></docno>
-    <date>2002-09-13</date>
-    <rev>A</rev>
-  </header>
-  <description>
-    <p>The <em>OTP_Mibs</em> application provides an SNMP management
-      information base for Erlang nodes.</p>
-  </description>
-  <xi:include href="otp_mib.xml"/>
-</application>
-
-
diff --git a/lib/otp_mibs/ebin/.gitignore b/lib/otp_mibs/ebin/.gitignore
deleted file mode 100644
index e69de29bb2..0000000000
--- a/lib/otp_mibs/ebin/.gitignore
+++ /dev/null
diff --git a/lib/otp_mibs/include/.gitignore b/lib/otp_mibs/include/.gitignore
deleted file mode 100644
index e69de29bb2..0000000000
--- a/lib/otp_mibs/include/.gitignore
+++ /dev/null
diff --git a/lib/otp_mibs/info b/lib/otp_mibs/info
deleted file mode 100644
index aedd1c883b..0000000000
--- a/lib/otp_mibs/info
+++ /dev/null
@@ -1,2 +0,0 @@
-group: oam Operation & Maintenance Applications
-short: SNMP management information base for Erlang/OTP nodes. 
diff --git a/lib/otp_mibs/mibs/Makefile b/lib/otp_mibs/mibs/Makefile
deleted file mode 100644
index 11d790d014..0000000000
--- a/lib/otp_mibs/mibs/Makefile
+++ /dev/null
@@ -1,89 +0,0 @@
-#
-# %CopyrightBegin%
-# 
-# Copyright Ericsson AB 1997-2016. All Rights Reserved.
-# 
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-# 
-# %CopyrightEnd%
-#
-
-include $(ERL_TOP)/make/target.mk
-include $(ERL_TOP)/make/$(TARGET)/otp.mk
-
-# ----------------------------------------------------
-# Application version
-# Release directory specification
-# ----------------------------------------------------
-include ../vsn.mk
-ifdef SASL_VSN
-VSN=$(SASL_VSN)
-RELSYSDIR = $(RELEASE_PATH)/lib/sasl-$(VSN)
-else
-VSN=$(OTP_MIBS_VSN)
-RELSYSDIR = $(RELEASE_PATH)/lib/otp_mibs-$(VSN)
-endif
-
-# ----------------------------------------------------
-# Target Specs
-# ----------------------------------------------------
-
-MIB_FILES= OTP-REG.mib OTP-TC.mib OTP-MIB.mib
-FUNCS_FILES = OTP-MIB.funcs
-
-BIN_TARGETS= $(MIB_FILES:%.mib=$(SNMP_BIN_TARGET_DIR)/%.bin)
-HRL_TARGETS= $(MIB_FILES:%.mib=$(SNMP_HRL_TARGET_DIR)/%.hrl)
-V1_MIB_FILES= $(MIB_FILES:%.mib=v1/%.mib.v1)
-
-TARGET_FILES= $(BIN_TARGETS) $(HRL_TARGETS) $(V1_MIB_FILES)
-
-# ----------------------------------------------------
-# FLAGS
-# ----------------------------------------------------
-SNMP_FLAGS = -I ../priv/mibs
-
-# ----------------------------------------------------
-# Targets
-# ----------------------------------------------------
-
-debug opt: $(TARGET_FILES)
-
-clean:
-	rm -f $(TARGET_FILES)
-	rm -f core
-
-docs:
-
-# ----------------------------------------------------
-# Special Build Targets
-# ----------------------------------------------------
-
-v1/%.mib.v1: %.mib
-	$(gen_verbose)$(ERL_TOP)/lib/snmp/bin/snmp-v2tov1 -o $@ $<
-
-# ----------------------------------------------------
-# Release Target
-# ---------------------------------------------------- 
-include $(ERL_TOP)/make/otp_release_targets.mk
-
-release_spec: opt
-	$(INSTALL_DIR) "$(RELSYSDIR)/mibs"
-	$(INSTALL_DIR) "$(RELSYSDIR)/mibs/v1"
-	$(INSTALL_DATA) $(MIB_FILES) $(FUNCS_FILES) "$(RELSYSDIR)/mibs"
-	$(INSTALL_DATA) $(V1_MIB_FILES) "$(RELSYSDIR)/mibs/v1"
-	$(INSTALL_DIR) "$(RELSYSDIR)/include"
-	$(INSTALL_DATA) $(HRL_TARGETS) "$(RELSYSDIR)/include"
-	$(INSTALL_DIR) "$(RELSYSDIR)/priv/mibs"
-	$(INSTALL_DATA) $(BIN_TARGETS) "$(RELSYSDIR)/priv/mibs"
-
-release_docs_spec:
diff --git a/lib/otp_mibs/mibs/OTP-EVA-MIB.mib b/lib/otp_mibs/mibs/OTP-EVA-MIB.mib
deleted file mode 100644
index 4d0c53ed95..0000000000
--- a/lib/otp_mibs/mibs/OTP-EVA-MIB.mib
+++ /dev/null
@@ -1,569 +0,0 @@
---
--- %CopyrightBegin%
--- 
--- Copyright Ericsson AB 2004-2016. All Rights Reserved.
--- 
--- Licensed under the Apache License, Version 2.0 (the "License");
--- you may not use this file except in compliance with the License.
--- You may obtain a copy of the License at
--- 
---     http://www.apache.org/licenses/LICENSE-2.0
---
--- Unless required by applicable law or agreed to in writing, software
--- distributed under the License is distributed on an "AS IS" BASIS,
--- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
--- See the License for the specific language governing permissions and
--- limitations under the License.
--- 
--- %CopyrightEnd%
---
-
-OTP-EVA-MIB DEFINITIONS ::= BEGIN
-
-IMPORTS
-    MODULE-IDENTITY, OBJECT-TYPE, NOTIFICATION-TYPE,
-    Counter32, Gauge32, Integer32
-        FROM SNMPv2-SMI
-    TEXTUAL-CONVENTION, DisplayString, DateAndTime
-        FROM SNMPv2-TC
-    MODULE-COMPLIANCE, OBJECT-GROUP, NOTIFICATION-GROUP
-        FROM SNMPv2-CONF
-    otpModules, otpApplications
-        FROM OTP-REG
-    OwnerString
-        FROM OTP-TC
-    ;
-
-otpEvaModule MODULE-IDENTITY
-    LAST-UPDATED "200305090900Z"
-    ORGANIZATION "Ericsson"
-    CONTACT-INFO
-       "Contact:  Erlang Support see license agreement for Erlang/OTP."
-    DESCRIPTION
-	"This MIB is part of the OTP MIB.  It defines MIB objects
-	for the eva application in OTP."
-   
-    REVISION	"200305090900Z"
-    DESCRIPTION		
-        "Changed CONTACT-INFO as it was outdated, made it more generic
-	to avoid such changes in the future."
-    
-    REVISION     "199801270900Z"
-    DESCRIPTION
-        "Changed erroneous defintion of alarmCleared notification.
-        Changed erroneous name of this module to otpEvaModule."
-    REVISION     "199712010900Z"
-    DESCRIPTION
-        "Converted to v2 SMI and placed in the OTP tree."
-    REVISION     "199705020900Z"
-    DESCRIPTION
-        "The initial version of this MIB module.  It is very much
-        inspired by the ANS-ALM-MIB and Axd301Eva-OMS mibs."
-    ::= { otpModules 6 }
-
-otpEvaMIB       OBJECT IDENTIFIER ::= { otpApplications 4 }
-otpEvaMIBConformance
-                OBJECT IDENTIFIER ::= { otpEvaMIB 1 }
-otpEvaMIBObjects
-                OBJECT IDENTIFIER ::= { otpEvaMIB 2 }
-otpEvaMIBEvents OBJECT IDENTIFIER ::= { otpEvaMIB 3 }
-otpEvaMIBEventsV2
-                OBJECT IDENTIFIER ::= { otpEvaMIBEvents 0 }
-
-
--- Datatypes
-
-AlarmSeverity ::= TEXTUAL-CONVENTION
-    STATUS      current
-    DESCRIPTION
-        "The AlarmSeverity defines six severity levels,
-        which provide an indication of how it is perceived that the
-        capability of the managed object has been affected.  Those
-        severity levels which represent service affecting conditions
-        ordered from most severe to least severe are critical,
-        major, minor and warning.  The levels used are as defined
-        in X.733, ITU Alarm Reporting Function:
-
-            o The Indeterminate severity level indicates that the
-              severity level cannot be determined.
-
-            o The Critical severity level indicates that a service
-              affecting condition has occurred and an immediate
-              corrective action is required.  Such a severity can be
-              reported, for example, when a managed object becomes
-              totally out of service and its capability must be restored.
-
-            o The Major severity level indicates that a service
-              affecting condition has developed and an urgent corrective
-              action is required.  Such a severity can be reported, for
-              example, when there is a severe degradation in the
-              capability of the managed object and its full capability
-              must be restored.
-
-            o The Minor severity level indicates the existence of a
-              non-service affecting fault condition and that corrective
-              action should be taken in order to prevent a more serious
-              (for example, service affecting) fault.  Such a severity
-              can be reported, for example, when the detected alarm
-              condition is not currently degrading the capacity of the
-              managed object.
-
-            o The Warning severity level indicates the detection of a
-              potential or impending service affecting fault, before any
-              significant effects have been felt.  Action should be taken
-              to further diagnose (if necessary) and correct the problem
-              in order to prevent it from becoming a more serious service
-              affecting fault.
-
-        When an alarm is cleared, an alarmCleared event is generated.
-        This event clears the alarm with the currentAlarmFaultId
-        contained in the event.  It is not required that the clearing
-        of previously reported alarms are reported.  Therefore, a managing
-        system cannot assume that the absence of an alarmedCleared event
-        for a fault means that the condition that caused the generation
-        of previous alarms is still present.  Managed object definers
-        shall state if, and under which conditions, the alarmedCleared
-        event is used.
-
-        The clear value of AlarmSeverity is an action which is used when
-        a management station wants to clear an active alarm.  This is not
-        possible on all systems, and thus an agent does not have support
-        write access for this value."
-    REFERENCE
-        "X.733, ITU Alarm Reporting Function"
-    SYNTAX INTEGER {
-                indeterminate (0),
-                critical (1),
-                major (2),
-                minor (3),
-                warning (4),
-                clear (5)   -- Written, not read
-                }
-
-AlarmClass ::= TEXTUAL-CONVENTION
-    STATUS      current
-    DESCRIPTION
-        "The AlarmClass type categorizes the alarm, and is
-	defined when the alarm is registered.  It is as defined in
-	X.733, ITU Alarm Reporting Function:
-
-            o communications.  An alarm of this class is principally
-              associated with the procedures or processes required
-              to convey information from one point to another.
-
-            o qos.  An alarm of this class is principally associated
-              with a degradation in the quality of service.
-
-            o processing.  An alarm of this class is principally
-              associated with a software or processing fault.
-
-	    o equipment.  An alarm of this class is principally
-              associated with an equipment fault.
-
-            o environmental.  An alarm of this class is principally
-	    associated with a condition relating to an enclosure in
-	    with equipment resides."
-    REFERENCE
-        "X.733, ITU Alarm Reporting Function"
-    SYNTAX INTEGER {
-        unknown (0),
-        communications (1),
-        qos (2),
-        processing (3),
-        equipment (4),
-        environmental (5)
-        }
-
-
--- Managed Objects
-
-event          OBJECT IDENTIFIER ::= { otpEvaMIBObjects 1 }
-alarm          OBJECT IDENTIFIER ::= { otpEvaMIBObjects 2 }
-currentAlarm   OBJECT IDENTIFIER ::= { otpEvaMIBObjects 3 }
-
--- The Event group
---
--- The Event group controls the generation of notifications of
--- events from the system.
-
-eventTable OBJECT-TYPE
-    SYNTAX      SEQUENCE OF EventEntry
-    MAX-ACCESS  not-accessible
-    STATUS      current
-    DESCRIPTION
-        "A list of events defined by the system.  This table is used
-        to control the sending of traps and to whom the traps are
-        sent."
-    ::= { event 1 }
-
-eventEntry OBJECT-TYPE
-    SYNTAX      EventEntry
-    MAX-ACCESS  not-accessible
-    STATUS      current
-    DESCRIPTION
-        "A set of parameters that describe an event to be
-        generated when certain conditions are met."
-    INDEX  { eventIndex }
-    ::= { eventTable 1 }
-
-EventEntry ::= SEQUENCE {
-    eventIndex      Integer32 (1..2147483647),
-    eventTrapName   DisplayString,
-    eventTreatment  INTEGER,
-    eventCommunity  OCTET STRING (SIZE (0..127)),
-    eventSentTraps  Counter32,
-    eventOwner      OwnerString
-    }
-
-eventIndex OBJECT-TYPE
-    SYNTAX      Integer32 (1..2147483647)
-    MAX-ACCESS  not-accessible
-    STATUS      current
-    DESCRIPTION
-        "An index that uniquely identifies an entry in the
-        event table.  Each such entry defines one event that
-        is to be generated when the appropriate conditions
-        occur.  The value for each eventIndex must remain
-        constant, at least from one re-initialization of the
-        entity's network management system to the next
-        re-initialization."
-    ::= { eventEntry 1 }
-
-eventTrapName OBJECT-TYPE
-    SYNTAX      DisplayString
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "The identifier of the corresponding trap.
-        NOTE: this should be an OID in SNMPv2, but must be
-        a string in v1."
-    ::= { eventEntry 2 }
-
-eventTreatment OBJECT-TYPE
-    SYNTAX  INTEGER {
-        none(1),
-        log(2),
-        snmpTrap(3),
-        logAndTrap(4)
-        }
-    MAX-ACCESS  read-write
-    STATUS      current
-    DESCRIPTION
-        "Defines how the system shall treat this event. In the
-        case of snmpTrap, an SNMP trap is sent to one or more
-        management stations. In the case of log, the event is
-        guaranteed to be logged in a log according to some log
-        strategy. Each such log strategy may define a MIB module
-        for control and examination of logs."
-    ::= { eventEntry 3 }
-
-eventCommunity OBJECT-TYPE
-    SYNTAX      OCTET STRING (SIZE (0..127))
-    MAX-ACCESS  read-write
-    STATUS      current
-    DESCRIPTION
-        "If an SNMP trap is to be sent, it will be sent to
-        the SNMP community specified by this octet string."
-    ::= { eventEntry 4 }
-
-eventSentTraps OBJECT-TYPE
-    SYNTAX      Counter32
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "The number of times this event has been sent as a trap."
-    ::= { eventEntry 5 }
-
-eventOwner OBJECT-TYPE
-    SYNTAX      OwnerString
-    MAX-ACCESS  read-write
-    STATUS      current
-    DESCRIPTION
-        "The manager entity that 'owns' this event entry, and is
-        therefore responsible for its contents."
-    ::= { eventEntry 6 }
-
-eventTime OBJECT-TYPE
-    SYNTAX      DateAndTime
-    MAX-ACCESS  accessible-for-notify
-    STATUS      current
-    DESCRIPTION
-        "This object may be included in a trap definition for an event.
-        It specifies the time the event was generated."
-    ::= { event 2 }
-
-
--- The Alarm group
---
--- The Alarm group extends the Event group with objects for alarms.
-
-alarmTable OBJECT-TYPE
-    SYNTAX      SEQUENCE OF AlarmEntry
-    MAX-ACCESS  not-accessible
-    STATUS      current
-    DESCRIPTION
-        "Contains additional information for alarm events."
-    ::= { alarm 1 }
-
-alarmEntry OBJECT-TYPE
-    SYNTAX      AlarmEntry
-    MAX-ACCESS  not-accessible
-    STATUS      current
-    DESCRIPTION
-        "A set of parameters for alarms."
-    INDEX { eventIndex }
-    ::= { alarmTable 1 }
-
-AlarmEntry ::= SEQUENCE {
-    alarmClass      AlarmClass,
-    alarmSeverity   AlarmSeverity
-    }
-
-alarmClass OBJECT-TYPE
-    SYNTAX      AlarmClass
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "The class of this alarm."
-    ::= { alarmEntry 1 }
-
-alarmSeverity OBJECT-TYPE
-    SYNTAX      AlarmSeverity
-    MAX-ACCESS  read-write
-    STATUS      current
-    DESCRIPTION
-        "The perceived severity that shall apply to the 
-        associated alarms."
-    ::= { alarmEntry 2 }
-
-
--- The CurrentAlarm group
---
--- The CurrentAlarm group is a collection of objects for monitoring of
--- active alarms in the system.
-
-numberOfCurrentAlarms OBJECT-TYPE
-    SYNTAX      Gauge32
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "Number of currently active alarms in the system."
-    ::= { currentAlarm 1 }
-
-currentAlarmLastTimeChanged OBJECT-TYPE
-    SYNTAX      DateAndTime
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "The time an entry in the currentAlarmTable was changed.
-        It may be used by a management station as a value to
-        poll.  If the value is changed, the management station
-        knows that the currentAlarmTable has been updated."
-    ::= { currentAlarm 2 }
-
-currentAlarmTable OBJECT-TYPE
-    SYNTAX      SEQUENCE OF CurrentAlarmEntry
-    MAX-ACCESS  not-accessible
-    STATUS      current
-    DESCRIPTION
-        "A list of currently active alarms in the system."
-    ::= { currentAlarm 3 }
-
-currentAlarmEntry OBJECT-TYPE
-    SYNTAX      CurrentAlarmEntry
-    MAX-ACCESS  not-accessible
-    STATUS      current
-    DESCRIPTION
-        "A set of parameters that describe a currently active
-        alarm."
-    INDEX { currentAlarmFaultId }
-    ::= { currentAlarmTable 1 }
-
-CurrentAlarmEntry ::= SEQUENCE {
-    currentAlarmFaultId     Integer32 (1..2147483647),
-    currentAlarmEventIndex  Integer32 (1..2147483647),
-    currentAlarmObject      OBJECT IDENTIFIER,
-    currentAlarmCause       OBJECT IDENTIFIER,
-    currentAlarmSeverity    AlarmSeverity,
-    currentAlarmTime        DateAndTime,
-    currentAlarmInformation DisplayString,
-    currentAlarmExtra1      OBJECT IDENTIFIER,
-    currentAlarmExtra2      OBJECT IDENTIFIER
-    }
-
-currentAlarmFaultId OBJECT-TYPE
-    SYNTAX      Integer32 (1..2147483647)
-    MAX-ACCESS  not-accessible
-    STATUS      current
-    DESCRIPTION
-        "An id that uniquely identifies a fault. Each fault is
-        represented as one an entry in the currentAlarmTable."
-    ::= { currentAlarmEntry 1 }
-
-currentAlarmEventIndex OBJECT-TYPE
-    SYNTAX      Integer32 (1..2147483647)
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "A pointer into the eventTable. Points to the event
-                corresponding to this alarm."
-    ::= { currentAlarmEntry 2 }
-
-currentAlarmObject OBJECT-TYPE
-    SYNTAX      OBJECT IDENTIFIER
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "The alarming object."
-    ::= { currentAlarmEntry 3 }
-
-currentAlarmCause OBJECT-TYPE
-    SYNTAX      OBJECT IDENTIFIER
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "The probable cause of the alarm."
-    ::= { currentAlarmEntry 4 }
-
-currentAlarmSeverity OBJECT-TYPE
-    SYNTAX      AlarmSeverity
-    MAX-ACCESS  read-write
-    STATUS      current
-    DESCRIPTION
-        "The perceived severity of the fault.  A manager can set
-        this value to clear only.  When set to clear, the alarm
-        is removed from this table, and a 'clearAlarm' event is
-        generated."
-    ::= { currentAlarmEntry 5 }
-
-currentAlarmTime OBJECT-TYPE
-    SYNTAX      DateAndTime
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "The time the fault was detected."
-    ::= { currentAlarmEntry 6 }
-
-currentAlarmInformation OBJECT-TYPE
-    SYNTAX      DisplayString
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "Additional information pin-pointing the problem."
-    ::= { currentAlarmEntry 7 }
-
-currentAlarmExtra1 OBJECT-TYPE
-    SYNTAX      OBJECT IDENTIFIER
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "An extra parameter used for some alarms at their own
-        discretion.  Can be used for example to identify
-        additional objects in the alarm, or instead of 
-        currentAlarmInformation to pin-point the problem, if the
-        additional information is defined in some MIB."
-    ::= { currentAlarmEntry 8 }
-
-currentAlarmExtra2 OBJECT-TYPE
-    SYNTAX      OBJECT IDENTIFIER
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "An extra parameter used for some alarms at their own
-        discretion.  Can be used for example to identify
-        additional objects in the alarm, or instead of 
-        currentAlarmInformation to pin-point the problem, if the
-        additional information is defined in some MIB."
-    ::= { currentAlarmEntry 9 }
-
-
--- Events
-
-alarmCleared NOTIFICATION-TYPE
-    OBJECTS {
-        currentAlarmEventIndex,
-        eventTime
-        }
-    STATUS  current
-    DESCRIPTION
-        "This event is sent when an alarm has been cleared,
-        either by the application or by an operator.  Note that the
-        currentAlarmFaultId is implicitly sent as the instance identifier
-        for currentAlarmEventIndex."
-    ::= { otpEvaMIBEventsV2 1 }
-
-
--- conformance information
-
-otpEvaMIBCompliances
-                OBJECT IDENTIFIER ::= { otpEvaMIBConformance 1 }
-otpEvaMIBGroups
-                OBJECT IDENTIFIER ::= { otpEvaMIBConformance 2 }
-
-
--- compliance statements
-
-otpEvaBasicCompliance MODULE-COMPLIANCE
-    STATUS  current
-    DESCRIPTION
-        "The compliance statement for SNMPv2 entities which
-        implement the OTP-EVA-MIB."
-    MODULE  -- this module
-        MANDATORY-GROUPS { eventGroup,
-                           alarmGroup,
-                           currentAlarmGroup,
-                           evaEventsGroup }
-
-    ::= { otpEvaMIBCompliances 1 }
-
-
--- units of conformance
-
-eventGroup OBJECT-GROUP
-    OBJECTS { eventTrapName,
-              eventTreatment,
-              eventCommunity,
-              eventSentTraps,
-              eventOwner,
-              eventTime }
-    STATUS  current
-    DESCRIPTION
-        "A collection of objects providing basic instrumentation
-        and control of the events defined in the OTP system."
-    ::= { otpEvaMIBGroups 1 }
-
-alarmGroup OBJECT-GROUP
-    OBJECTS { alarmClass,
-              alarmSeverity }
-    STATUS  current
-    DESCRIPTION
-        "A collection of objects providing basic instrumentation
-        and control of the alarms defined the OTP system."
-    ::= { otpEvaMIBGroups 2 }
-
-currentAlarmGroup OBJECT-GROUP
-    OBJECTS { numberOfCurrentAlarms,
-              currentAlarmLastTimeChanged,
-              currentAlarmEventIndex,
-              currentAlarmObject,
-              currentAlarmCause,
-              currentAlarmSeverity,
-              currentAlarmTime,
-              currentAlarmInformation,
-              currentAlarmExtra1,
-              currentAlarmExtra2 }
-    STATUS  current
-    DESCRIPTION
-        "A collection of objects providing basic instrumentation
-        of the activa alarm list in the OTP system."
-    ::= { otpEvaMIBGroups 3 }
-
-evaEventsGroup NOTIFICATION-GROUP
-    NOTIFICATIONS { alarmCleared }
-    STATUS        current
-    DESCRIPTION
-        "The notification which is generated from EVA."
-    ::= { otpEvaMIBGroups 4 }
-
-
-END
diff --git a/lib/otp_mibs/mibs/OTP-MIB.funcs b/lib/otp_mibs/mibs/OTP-MIB.funcs
deleted file mode 100644
index 9f9d69c3d1..0000000000
--- a/lib/otp_mibs/mibs/OTP-MIB.funcs
+++ /dev/null
@@ -1,2 +0,0 @@
-{erlNodeTable, {otp_mib, erl_node_table, []}}.
-{applTable, {otp_mib, appl_table, []}}.
diff --git a/lib/otp_mibs/mibs/OTP-MIB.mib b/lib/otp_mibs/mibs/OTP-MIB.mib
deleted file mode 100644
index 693319eae4..0000000000
--- a/lib/otp_mibs/mibs/OTP-MIB.mib
+++ /dev/null
@@ -1,318 +0,0 @@
---
--- %CopyrightBegin%
--- 
--- Copyright Ericsson AB 1996-2016. All Rights Reserved.
--- 
--- Licensed under the Apache License, Version 2.0 (the "License");
--- you may not use this file except in compliance with the License.
--- You may obtain a copy of the License at
--- 
---     http://www.apache.org/licenses/LICENSE-2.0
---
--- Unless required by applicable law or agreed to in writing, software
--- distributed under the License is distributed on an "AS IS" BASIS,
--- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
--- See the License for the specific language governing permissions and
--- limitations under the License.
--- 
--- %CopyrightEnd%
---
-
-OTP-MIB DEFINITIONS ::= BEGIN
- 
-IMPORTS
-    MODULE-IDENTITY, OBJECT-TYPE,
-    Counter64, Gauge32, Integer32
-        FROM SNMPv2-SMI
-    TEXTUAL-CONVENTION, DisplayString
-        FROM SNMPv2-TC
-    MODULE-COMPLIANCE, OBJECT-GROUP
-        FROM SNMPv2-CONF
-    otpModules, otpApplications
-        FROM OTP-REG
-    ;
-
-otpModule MODULE-IDENTITY
-    LAST-UPDATED    "201307160700Z"
-    ORGANIZATION    "Ericsson"
-    CONTACT-INFO
-        "Contact:    Erlang Support see license agreement for Erlang/OTP."
-    DESCRIPTION
-        "This is a MIB for a distributed OTP system, with one SNMP
-        agent executing at one node only.  Each Erlang node in the
-        OTP system is represented by one row in the erlNodeTable."
-
-    REVISION        "201307160700Z"
-    DESCRIPTION
-        "Updated various types to be able to reflect larger values.
-        The objects erlNodeReductions, erlNodeInBytes, erlNodeOutBytes as well
-        as the type MilliSeconds have been updated to Counter64."
-
-    REVISION        "200305090900Z"
-    DESCRIPTION
-        "Changed CONTACT-INFO as it was outdated, made it more generic
-	to avoid such changes in the future."
-    
-    REVISION        "199712010900Z"
-    DESCRIPTION
-        "Converted to v2 SMI and placed in the OTP tree."
-
-    REVISION        "199608191700Z"
-    DESCRIPTION
-        "The initial revision of MIB module OTP-MIB."
-
-    ::= { otpModules 3 }
-
-otpMIB          OBJECT IDENTIFIER ::= { otpApplications 1 }
-otpMIBConformance
-                OBJECT IDENTIFIER ::= { otpMIB 1 }
-otpMIBObjects   OBJECT IDENTIFIER ::= { otpMIB 2 }
-
--- Datatypes
-
-MilliSeconds ::= TEXTUAL-CONVENTION
-    STATUS      current
-    DESCRIPTION
-        "The MilliSeconds type represents a Counter which represents
-        the time, in milliseconds between two epochs.  When objects
-	are defined which use this type, the description of the object
-	identifies both of the reference epochs."
-    SYNTAX      Counter64
-
-
--- Managed Objects
-
-erlang          OBJECT IDENTIFIER ::= { otpMIBObjects 1 }
-appls           OBJECT IDENTIFIER ::= { otpMIBObjects 2 }
-
-erlNodeTable OBJECT-TYPE
-    SYNTAX      SEQUENCE OF ErlNodeEntry
-    MAX-ACCESS  not-accessible
-    STATUS      current
-    DESCRIPTION
-        "A table with info on each erlang node in the system."
-    ::= { erlang 1 }
-
-erlNodeEntry OBJECT-TYPE
-    SYNTAX      ErlNodeEntry
-    MAX-ACCESS  not-accessible
-    STATUS      current
-    DESCRIPTION
-        "A conceptual row in the erlNodeTable."
-    INDEX   { erlNodeId }
-    ::= { erlNodeTable 1 }
-
-ErlNodeEntry ::= SEQUENCE {
-    erlNodeId           Integer32,
-    erlNodeName         DisplayString,
-    erlNodeMachine      DisplayString,      
-    erlNodeVersion      DisplayString,
-    erlNodeRunQueue     Gauge32,
-    erlNodeRunTime      MilliSeconds,
-    erlNodeWallClock    MilliSeconds,
-    erlNodeReductions   Counter64,
-    erlNodeProcesses    Gauge32,
-    erlNodeInBytes      Counter64,
-    erlNodeOutBytes     Counter64
-}
-
-erlNodeId OBJECT-TYPE
-    SYNTAX      Integer32
-    MAX-ACCESS  not-accessible
-    STATUS      current
-    DESCRIPTION
-        "An integer that uniquely identifies the erlang node."
-    ::= { erlNodeEntry 1 }
-
-erlNodeName OBJECT-TYPE
-    SYNTAX      DisplayString
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "The symbolic name of the erlang node."
-    ::= { erlNodeEntry 2 }
-
-erlNodeMachine OBJECT-TYPE
-    SYNTAX      DisplayString
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "The virtual machine executing the erlang node"
-    ::= { erlNodeEntry 3 }
-
-erlNodeVersion OBJECT-TYPE
-    SYNTAX      DisplayString
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "The version number of the virtual machine"
-    ::= { erlNodeEntry 4 }
-
-erlNodeRunQueue OBJECT-TYPE
-    SYNTAX      Gauge32
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "Number of processes scheduled to run"
-    ::= { erlNodeEntry 5 }
-
-erlNodeRunTime OBJECT-TYPE
-    SYNTAX      MilliSeconds
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "Total cpu time in milliseconds since the 
-        system started"
-    ::= { erlNodeEntry 6 }
-
-erlNodeWallClock OBJECT-TYPE
-    SYNTAX      MilliSeconds
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "Total real time in milliseconds since the 
-        system started"
-    ::= { erlNodeEntry 7 }  
-
-erlNodeReductions OBJECT-TYPE
-    SYNTAX      Counter64
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "Number of function calls since the system started"
-    ::= { erlNodeEntry 8 }
-
-erlNodeProcesses OBJECT-TYPE
-    SYNTAX      Gauge32
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "Number of running processes in the system."
-    ::= { erlNodeEntry 9 }
-
-erlNodeInBytes  OBJECT-TYPE
-    SYNTAX      Counter64
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "The total number of bytes delivered to the system"
-    ::= { erlNodeEntry 10 }
-
-erlNodeOutBytes  OBJECT-TYPE
-    SYNTAX      Counter64
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "The total number of bytes delivered from the system"
-    ::= { erlNodeEntry 11 }
-
-
-applTable OBJECT-TYPE
-    SYNTAX      SEQUENCE OF ApplEntry
-    MAX-ACCESS  not-accessible
-    STATUS      current
-    DESCRIPTION
-        "A table with all currently running applications
-        for each node."
-    ::= { appls 1 }
-
-applEntry OBJECT-TYPE
-    SYNTAX      ApplEntry
-    MAX-ACCESS  not-accessible
-    STATUS      current
-    DESCRIPTION
-        "A conceptual row in the applTable."
-    INDEX   { erlNodeId, applId }
-    ::= { applTable 1 }
-
-ApplEntry ::= SEQUENCE {
-    applId      Integer32,
-    applName    DisplayString,
-    applDescr   DisplayString,
-    applVsn     DisplayString
-}
-
-applId OBJECT-TYPE
-    SYNTAX      Integer32
-    MAX-ACCESS  not-accessible
-    STATUS      current
-    DESCRIPTION
-        "An integer that uniquely identifies the application."
-    ::= { applEntry 1 }
-
-applName OBJECT-TYPE
-    SYNTAX      DisplayString
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "The name of the application."
-    ::= { applEntry 2 }
-
-applDescr OBJECT-TYPE
-    SYNTAX      DisplayString
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "A short description of the application."
-    ::= { applEntry 3 }
-
-applVsn OBJECT-TYPE
-    SYNTAX      DisplayString
-    MAX-ACCESS  read-only
-    STATUS      current
-    DESCRIPTION
-        "The version of the application."
-    ::= { applEntry 4 }
-
-
--- conformance information
-
-otpMIBCompliances
-                OBJECT IDENTIFIER ::= { otpMIBConformance 1 }
-otpMIBGroups    OBJECT IDENTIFIER ::= { otpMIBConformance 2 }
-
-
--- compliance statements
-
-otpBasicCompliance MODULE-COMPLIANCE
-    STATUS      current
-    DESCRIPTION
-        "The compliance statement for SNMPv2 entities which
-        implement the OTP-MIB."
-    MODULE  -- this module
-        MANDATORY-GROUPS { erlGroup, applGroup }
-
-    ::= { otpMIBCompliances 1 }
-
-
--- units of conformance
-
-erlGroup OBJECT-GROUP
-    OBJECTS { erlNodeName,
-              erlNodeMachine,
-              erlNodeVersion,
-              erlNodeRunQueue,
-              erlNodeRunTime,
-              erlNodeWallClock,
-              erlNodeReductions,
-              erlNodeProcesses,
-              erlNodeInBytes,
-              erlNodeOutBytes }
-    STATUS  current
-    DESCRIPTION
-        "A collection of objects providing basic instrumentation
-        of the Erlang runtime system."
-    ::= { otpMIBGroups 1 }
-
-applGroup OBJECT-GROUP
-    OBJECTS { applName,
-              applDescr,
-              applVsn }
-    STATUS  current
-    DESCRIPTION
-        "A collection of objects providing basic instrumentation
-        of the applications in the OTP system."
-    ::= { otpMIBGroups 2 }
-
-
-END
diff --git a/lib/otp_mibs/mibs/v1/.gitignore b/lib/otp_mibs/mibs/v1/.gitignore
deleted file mode 100644
index e69de29bb2..0000000000
--- a/lib/otp_mibs/mibs/v1/.gitignore
+++ /dev/null
diff --git a/lib/otp_mibs/priv/bin/.gitignore b/lib/otp_mibs/priv/bin/.gitignore
deleted file mode 100644
index e69de29bb2..0000000000
--- a/lib/otp_mibs/priv/bin/.gitignore
+++ /dev/null
diff --git a/lib/otp_mibs/priv/mibs/.gitignore b/lib/otp_mibs/priv/mibs/.gitignore
deleted file mode 100644
index e69de29bb2..0000000000
--- a/lib/otp_mibs/priv/mibs/.gitignore
+++ /dev/null
diff --git a/lib/otp_mibs/priv/obj/.gitignore b/lib/otp_mibs/priv/obj/.gitignore
deleted file mode 100644
index e69de29bb2..0000000000
--- a/lib/otp_mibs/priv/obj/.gitignore
+++ /dev/null
diff --git a/lib/otp_mibs/src/Makefile b/lib/otp_mibs/src/Makefile
deleted file mode 100644
index 5c7af39c3f..0000000000
--- a/lib/otp_mibs/src/Makefile
+++ /dev/null
@@ -1,106 +0,0 @@
-#
-# %CopyrightBegin%
-# 
-# Copyright Ericsson AB 2003-2016. All Rights Reserved.
-# 
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-# 
-# %CopyrightEnd%
-#
-include $(ERL_TOP)/make/target.mk
-
-ifeq ($(TYPE),debug)
-ERL_COMPILE_FLAGS += -Ddebug -W
-endif
-
-include $(ERL_TOP)/make/$(TARGET)/otp.mk
-
-# ----------------------------------------------------
-# Application version
-# ----------------------------------------------------
-include ../vsn.mk
-VSN=$(OTP_MIBS_VSN)
-
-# ----------------------------------------------------
-# Release directory specification
-# ----------------------------------------------------
-RELSYSDIR = $(RELEASE_PATH)/lib/otp_mibs-$(VSN)
-# ----------------------------------------------------
-# Target Specs
-# ----------------------------------------------------
-MODULES = \
-	otp_mib
-
-INCLUDE=../include
-
-HRL_FILES =
-
-INTERNAL_HRL_FILES =
-
-ERL_FILES = $(MODULES:%=%.erl)
-
-APP_FILE   = otp_mibs.app
-APP_SRC    = $(APP_FILE).src
-APP_TARGET = $(EBIN)/$(APP_FILE)
-
-APPUP_FILE   = otp_mibs.appup
-APPUP_SRC    = $(APPUP_FILE).src
-APPUP_TARGET = $(EBIN)/$(APPUP_FILE)
-
-TARGET_FILES = $(MODULES:%=$(EBIN)/%.$(EMULATOR))
-
-TARGETS = $(TARGET_FILES) $(APP_TARGET) $(APPUP_TARGET)
-
-# ----------------------------------------------------
-# FLAGS
-# ----------------------------------------------------
-ERL_COMPILE_FLAGS += -I$(INCLUDE)
-
-# ----------------------------------------------------
-# Targets
-# ----------------------------------------------------
-
-debug opt: $(TARGETS)
-
-clean:
-	rm -f $(TARGET_FILES)
-	rm -f $(APP_TARGET)
-	rm -f $(APPUP_TARGET)
-	rm -f core
-
-docs:
-
-# ----------------------------------------------------
-# Special Build Targets
-# ----------------------------------------------------
-
-$(APP_TARGET): $(APP_SRC) ../vsn.mk
-	$(vsn_verbose)sed -e 's;%VSN%;$(VSN);' $< > $@
-
-$(APPUP_TARGET): $(APPUP_SRC) ../vsn.mk
-	$(vsn_verbose)sed -e 's;%VSN%;$(VSN);' $< > $@
-
-# ----------------------------------------------------
-# Release Target
-# ----------------------------------------------------
-include $(ERL_TOP)/make/otp_release_targets.mk
-
-release_spec: opt
-	$(INSTALL_DIR) "$(RELSYSDIR)/src"
-	$(INSTALL_DATA) $(ERL_FILES) "$(RELSYSDIR)/src"
-	$(INSTALL_DIR) "$(RELSYSDIR)/ebin"
-	$(INSTALL_DATA) $(TARGETS) "$(RELSYSDIR)/ebin"
-
-release_docs_spec:
-
-
diff --git a/lib/otp_mibs/src/otp_mib.erl b/lib/otp_mibs/src/otp_mib.erl
deleted file mode 100644
index ca868f2817..0000000000
--- a/lib/otp_mibs/src/otp_mib.erl
+++ /dev/null
@@ -1,219 +0,0 @@
-%%
-%% %CopyrightBegin%
-%%
-%% Copyright Ericsson AB 1996-2018. All Rights Reserved.
-%%
-%% Licensed under the Apache License, Version 2.0 (the "License");
-%% you may not use this file except in compliance with the License.
-%% You may obtain a copy of the License at
-%%
-%%     http://www.apache.org/licenses/LICENSE-2.0
-%%
-%% Unless required by applicable law or agreed to in writing, software
-%% distributed under the License is distributed on an "AS IS" BASIS,
-%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-%% See the License for the specific language governing permissions and
-%% limitations under the License.
-%%
-%% %CopyrightEnd%
-%%
--module(otp_mib).
-%%%-----------------------------------------------------------------
-%%% Description: This module implements the OTP-MIB.
-%%% The tables are implemented as shadow tables with the module
-%%% snmp_shadow_table.
-%%%-----------------------------------------------------------------
-
-%% API
--export([load/1, unload/1]).
-
-%% SNMP instrumentation
--export([erl_node_table/1, erl_node_table/3, appl_table/1, appl_table/3]).
-
-%% SNMP shadow functions
--export([update_erl_node_table/0, update_appl_table/0]).
-
-%% Exported for internal use via rpc
--export([get_erl_node/1, get_appls/1]).
-
--deprecated([{load,1,eventually},
-	     {unload,1,eventually}]).
-
-%% Shadow tables
--record(erlNodeTable,
-	{erlNodeId, erlNodeName, erlNodeMachine, erlNodeVersion,
-	 erlNodeRunQueue,
-         erlNodeRunTime, erlNodeWallClock, erlNodeReductions,
-	 erlNodeProcesses, erlNodeInBytes, erlNodeOutBytes}).
-
--record(applTable, {key = '_', applName = '_', applDescr = '_',
-		    applVsn = '_'}).
-
-%% Shadow argument macros
--define(erlNodeShadowArgs,
-	{erlNodeTable, integer, record_info(fields, erlNodeTable), 5000,
-	 fun otp_mib:update_erl_node_table/0}).
-
--define(applShadowArgs,
-	{applTable, {integer, integer}, record_info(fields, applTable),
-	 5000, fun otp_mib:update_appl_table/0}).
-
-%% Misc
--record(erlNodeAlloc, {nodeName, nodeId}).
-
-%%%=========================================================================
-%%%  API
-%%%=========================================================================
-
-%%-------------------------------------------------------------------------
-%% load(Agent) ->  ok | {error, Reason}
-%% Agent - pid() | atom()
-%% Reason - term()
-%% Description: Loads the OTP-MIB
-%%-------------------------------------------------------------------------
-load(Agent) ->
-    MibDir = code:priv_dir(otp_mibs) ++ "/mibs",
-    snmpa:load_mibs(Agent, [MibDir ++ "/OTP-MIB"]).
-
-%%-------------------------------------------------------------------------
-%% unload(Agent) ->  ok | {error, Reason}
-%% Agent - pid() | atom()
-%% Reason - term()
-%% Description: Loads the OTP-MIB
-%%-------------------------------------------------------------------------
-unload(Agent) ->
-    snmpa:unload_mibs(Agent, ["OTP-MIB"]).
-
-
-%%%=========================================================================
-%%%  SNMP instrumentation
-%%%=========================================================================
-erl_node_table(new) ->
-    Tab = erlNodeAlloc,
-    Storage = ram_copies,
-    case lists:member(Tab, mnesia:system_info(tables)) of
-	true ->
-	    case mnesia:table_info(Tab, storage_type) of
-		unknown ->
-		    {atomic, ok} = mnesia:add_table_copy(Tab, node(), Storage);
-		Storage ->
-		    catch delete_all(Tab)
-	    end;
-	false ->
-	    Nodes = [node()],
-	    Props = [{type, set},
-		     {attributes, record_info(fields, erlNodeAlloc)},
-		     {local_content, true},
-		     {Storage, Nodes}],
-	    {atomic, ok} = mnesia:create_table(Tab, Props)
-    end,
-    ok = mnesia:dirty_write({erlNodeAlloc, next_index, 1}),
-    update_node_alloc([node() | nodes()]),
-    snmp_shadow_table:table_func(new, ?erlNodeShadowArgs).
-
-erl_node_table(Op, RowIndex, Cols) ->
-    snmp_shadow_table:table_func(Op, RowIndex, Cols, ?erlNodeShadowArgs).
-
-
-appl_table(Op) ->
-    snmp_shadow_table:table_func(Op, ?applShadowArgs).
-appl_table(Op, RowIndex, Cols) ->
-    snmp_shadow_table:table_func(Op, RowIndex, Cols, ?applShadowArgs).
-
-
-%%%=========================================================================
-%%%  SNMP shadow functions
-%%%=========================================================================
-update_erl_node_table() ->
-    delete_all(erlNodeTable),
-    Nodes = [node() | nodes()],
-    update_node_alloc(Nodes),
-    lists:foreach(
-      fun(Node) ->
-	      [{_,_,Idx}] = mnesia:dirty_read({erlNodeAlloc, Node}),
-	      ErlNode = rpc:call(Node, otp_mib, get_erl_node, [Idx]),
-	      ok = mnesia:dirty_write(ErlNode)
-      end, Nodes).
-
-update_appl_table() ->
-    delete_all(applTable),
-    Nodes = [node() | nodes()],
-    update_node_alloc(Nodes),
-    lists:foreach(
-      fun(Node) ->
-	      [{_,_,Idx}] = mnesia:dirty_read({erlNodeAlloc, Node}),
-	      Appls = rpc:call(Node, otp_mib, get_appls, [Idx]),
-	      lists:foreach(fun(Appl) ->
-				    ok = mnesia:dirty_write(Appl)
-			    end, Appls)
-      end, Nodes).
-
-%%%========================================================================
-%%% Exported for internal use via rpc
-%%%========================================================================
-get_erl_node(Id) ->
-    RunQueue = erlang:statistics(run_queue),
-    RunTime = element(1, erlang:statistics(runtime)),
-    WallClock = element(1, erlang:statistics(wall_clock)),
-    Reductions = element(1, erlang:statistics(reductions)),
-    Processes = length(processes()),
-    IO = erlang:statistics(io),
-    InBytes = element(2, element(1, IO)),
-    OutBytes = element(2, element(2, IO)),
-    #erlNodeTable{erlNodeId = truncate_int('Integer32', Id),
-		  erlNodeName = atom_to_list(node()),
-		  erlNodeVersion = erlang:system_info(version),
-		  erlNodeMachine = erlang:system_info(machine),
-		  erlNodeRunQueue = truncate_int('Unsigned32', RunQueue),
-		  erlNodeRunTime = truncate_int('Counter64', RunTime),
-		  erlNodeWallClock = truncate_int('Counter64', WallClock),
-		  erlNodeReductions = truncate_int('Counter64', Reductions),
-		  erlNodeProcesses = truncate_int('Unsigned32', Processes),
-		  erlNodeInBytes = truncate_int('Counter64', InBytes),
-		  erlNodeOutBytes = truncate_int('Counter64', OutBytes)}.
-
-get_appls(NodeId) ->
-    element(1,
-	    lists:mapfoldl(
-	      fun({ApplName, ApplDescr, ApplVsn}, ApplId) ->
-		      {#applTable{key = {NodeId, ApplId},
-				  applName = atom_to_list(ApplName),
-				  applDescr = ApplDescr,
-				  applVsn = ApplVsn},
-		       ApplId + 1}
-	      end, 1, application:which_applications())).
-
-%%%========================================================================
-%%% Internal functions
-%%%========================================================================
-update_node_alloc([Node | T]) ->
-    case mnesia:dirty_read({erlNodeAlloc, Node}) of
-	[] ->
-	    [{_, _, Idx}] = mnesia:dirty_read({erlNodeAlloc, next_index}),
-	    ok = mnesia:dirty_write(#erlNodeAlloc{nodeName = Node,
-						  nodeId = Idx}),
-	    ok = mnesia:dirty_write({erlNodeAlloc, next_index, Idx + 1});
-	_ ->
-	    ok
-    end,
-    update_node_alloc(T);
-update_node_alloc([]) -> ok.
-
-delete_all(Name) -> delete_all(mnesia:dirty_first(Name), Name).
-delete_all('$end_of_table', _Name) -> done;
-delete_all(Key, Name) ->
-    Next = mnesia:dirty_next(Name, Key),
-    ok = mnesia:dirty_delete({Name, Key}),
-    delete_all(Next, Name).
-
-%% This will return a value limited to fit into the specified type.
-%% While counter types will be resetted, other integer types will
-%% only be restricted to the valid range.
-truncate_int('Counter64', Value) when Value < 0 -> 0;
-truncate_int('Counter64', Value) -> Value rem 18446744073709551615;
-truncate_int('Unsigned32', Value) when Value < 0 -> 0;
-truncate_int('Unsigned32', Value) when Value > 4294967295 -> 4294967295;
-truncate_int('Unsigned32', Value) -> Value;
-truncate_int('Integer32', Value) when Value < -2147483648 -> -2147483648;
-truncate_int('Integer32', Value) when Value > 2147483647 -> 2147483647;
-truncate_int('Integer32', Value) -> Value.
diff --git a/lib/otp_mibs/src/otp_mibs.app.src b/lib/otp_mibs/src/otp_mibs.app.src
deleted file mode 100644
index 75ef25c366..0000000000
--- a/lib/otp_mibs/src/otp_mibs.app.src
+++ /dev/null
@@ -1,30 +0,0 @@
-%%
-%% %CopyrightBegin%
-%% 
-%% Copyright Ericsson AB 2003-2016. All Rights Reserved.
-%% 
-%% Licensed under the Apache License, Version 2.0 (the "License");
-%% you may not use this file except in compliance with the License.
-%% You may obtain a copy of the License at
-%%
-%%     http://www.apache.org/licenses/LICENSE-2.0
-%%
-%% Unless required by applicable law or agreed to in writing, software
-%% distributed under the License is distributed on an "AS IS" BASIS,
-%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-%% See the License for the specific language governing permissions and
-%% limitations under the License.
-%% 
-%% %CopyrightEnd%
-%%
-
-{application, otp_mibs,
- [{description, "SNMP managment information base for Erlang/OTP nodes."},
-  {vsn, "%VSN%"},
-  {modules, [otp_mib]},
-  {registered, []},
-  {applications, [kernel, stdlib, snmp]},
-  {env,[]},
-  {runtime_dependencies, ["stdlib-2.0","snmp-4.25.1","mnesia-4.12",
-			  "kernel-3.0","erts-6.0"]}]}.
-
diff --git a/lib/otp_mibs/src/otp_mibs.appup.src b/lib/otp_mibs/src/otp_mibs.appup.src
deleted file mode 100644
index 9437ae2222..0000000000
--- a/lib/otp_mibs/src/otp_mibs.appup.src
+++ /dev/null
@@ -1,22 +0,0 @@
-%% -*- erlang -*-
-%% %CopyrightBegin%
-%% 
-%% Copyright Ericsson AB 2003-2016. All Rights Reserved.
-%% 
-%% Licensed under the Apache License, Version 2.0 (the "License");
-%% you may not use this file except in compliance with the License.
-%% You may obtain a copy of the License at
-%%
-%%     http://www.apache.org/licenses/LICENSE-2.0
-%%
-%% Unless required by applicable law or agreed to in writing, software
-%% distributed under the License is distributed on an "AS IS" BASIS,
-%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-%% See the License for the specific language governing permissions and
-%% limitations under the License.
-%% 
-%% %CopyrightEnd%
-{"%VSN%",
- [{<<".*">>,[{restart_application, otp_mibs}]}],
- [{<<".*">>,[{restart_application, otp_mibs}]}]
-}.
diff --git a/lib/otp_mibs/test/Makefile b/lib/otp_mibs/test/Makefile
deleted file mode 100644
index 9736cf8bce..0000000000
--- a/lib/otp_mibs/test/Makefile
+++ /dev/null
@@ -1,85 +0,0 @@
-#
-# %CopyrightBegin%
-#
-# Copyright Ericsson AB 1997-2016. All Rights Reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# %CopyrightEnd%
-#
-include $(ERL_TOP)/make/target.mk
-
-include $(ERL_TOP)/make/$(TARGET)/otp.mk
-
-# ----------------------------------------------------
-# Target Specs
-# ----------------------------------------------------
-
-MODULES= otp_mibs_SUITE
-
-EBIN = .
-
-HRL_FILES=
-
-ERL_FILES= $(MODULES:%=%.erl)
-
-TARGET_FILES = $(MODULES:%=$(EBIN)/%.$(EMULATOR))
-
-SOURCE = $(ERL_FILES) $(HRL_FILES)
-
-EMAKEFILE=Emakefile
-
-# ----------------------------------------------------
-# Release directory specification
-# ----------------------------------------------------
-RELSYSDIR = $(RELEASE_PATH)/otp_mibs_test
-
-# ----------------------------------------------------
-# FLAGS
-# ----------------------------------------------------
-ERL_MAKE_FLAGS +=
-ERL_COMPILE_FLAGS += \
-	-I$(ERL_TOP)/lib/snmp/include
-
-# ----------------------------------------------------
-# Targets
-# ----------------------------------------------------
-
-make_emakefile:
-	$(ERL_TOP)/make/make_emakefile $(ERL_COMPILE_FLAGS) -o$(EBIN) $(MODULES)\
-	> $(EMAKEFILE)
-
-tests debug opt: make_emakefile
-	erl $(ERL_MAKE_FLAGS) -make
-
-clean:
-	rm -f $(EMAKEFILE)
-	rm -f $(TARGET_FILES)
-	rm -f core *~
-
-docs:
-
-
-# ----------------------------------------------------
-# Release Target
-# ----------------------------------------------------
-include $(ERL_TOP)/make/otp_release_targets.mk
-
-release_spec:
-
-release_tests_spec: make_emakefile
-	$(INSTALL_DIR) "$(RELSYSDIR)"
-	$(INSTALL_DATA) $(EMAKEFILE) $(SOURCE) "$(RELSYSDIR)"
-	$(INSTALL_DATA) otp_mibs_SUITE.cfg "$(RELSYSDIR)"
-
-release_docs_spec:
diff --git a/lib/otp_mibs/test/otp_mibs_SUITE.cfg b/lib/otp_mibs/test/otp_mibs_SUITE.cfg
deleted file mode 100644
index d01cf92104..0000000000
--- a/lib/otp_mibs/test/otp_mibs_SUITE.cfg
+++ /dev/null
@@ -1,15 +0,0 @@
-%% -*- erlang -*-
-{snmp,
- [
-  {start_agent,true},
-  {users,
-   [
-    {otp_mibs_test,[snmpm_user_default,[]]}
-   ]},
-  {managed_agents,
-   [
-    {otp_mibs_test, [otp_mibs_test, {127,0,0,1}, 4000, []]}
-   ]},
-  {agent_sysname,"Test otp_mibs"},
-  {mgr_port,5001}
- ]}.
diff --git a/lib/otp_mibs/test/otp_mibs_SUITE.erl b/lib/otp_mibs/test/otp_mibs_SUITE.erl
deleted file mode 100644
index cb3cd28200..0000000000
--- a/lib/otp_mibs/test/otp_mibs_SUITE.erl
+++ /dev/null
@@ -1,255 +0,0 @@
-%%
-%% %CopyrightBegin%
-%%
-%% Copyright Ericsson AB 2004-2016. All Rights Reserved.
-%%
-%% Licensed under the Apache License, Version 2.0 (the "License");
-%% you may not use this file except in compliance with the License.
-%% You may obtain a copy of the License at
-%%
-%%     http://www.apache.org/licenses/LICENSE-2.0
-%%
-%% Unless required by applicable law or agreed to in writing, software
-%% distributed under the License is distributed on an "AS IS" BASIS,
-%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-%% See the License for the specific language governing permissions and
-%% limitations under the License.
-%%
-%% %CopyrightEnd%
-%%
--module(otp_mibs_SUITE).
-
-%%-----------------------------------------------------------------
-%% This suite can no longer be executed standalone, i.e. it must be
-%% executed with common test. The reason is that ct_snmp is used
-%% instead of the snmp application directly. The suite requires a
-%% config file, otp_mibs_SUITE.cfg, found in the same directory as
-%% the suite.
-%%
-%% Execute with:
-%% > ct_run -suite otp_mibs_SUITE -config otp_mibs_SUITE.cfg
-%%-----------------------------------------------------------------
-
--include_lib("common_test/include/ct.hrl").
--include_lib("otp_mibs/include/OTP-MIB.hrl").
--include_lib("snmp/include/snmp_types.hrl").
-
-% Test server specific exports
--export([all/0,
-	 suite/0,
-	 groups/0,
-	 init_per_group/2,
-	 end_per_group/2,
-	 init_per_suite/1,
-	 end_per_suite/1,
-	 init_per_testcase/2,
-	 end_per_testcase/2]).
-
-% Test cases must be exported.
--export([app/1, appup/1, nt_basic_types/1, nt_high_reduction_count/1]).
-
--define(TRAP_UDP,      5000).
--define(AGENT_UDP,     4000).
--define(CONF_FILE_VER, [v2]).
--define(SYS_NAME,      "Test otp_mibs").
--define(MAX_MSG_SIZE,  484).
--define(ENGINE_ID,     "mgrEngine").
--define(MGR_PORT,      5001).
-
-%% Since some cases are only interested in single entries of the OTP-MIB's
-%% node table, one row must be chosen. The first row should be sufficient
-%% for this.
--define(NODE_ENTRY, 1).
-
-%%---------------------------------------------------------------------
-%% CT setup
-%%---------------------------------------------------------------------
-
-init_per_testcase(_Case, Config) when is_list(Config) ->
-    Dog = test_server:timetrap(test_server:minutes(6)),
-    [{watchdog, Dog}|Config].
-
-end_per_testcase(_Case, Config) when is_list(Config) ->
-    Dog = ?config(watchdog, Config),
-    test_server:timetrap_cancel(Dog),
-    Config.
-
-suite() -> [{ct_hooks,[ts_install_cth]}, {require, snmp_mgr_agent, snmp}].
-
-all() -> [{group, app}, {group, node_table}].
-
-groups() -> [{app, [], [app, appup]},
-             {node_table, [], [nt_basic_types, nt_high_reduction_count]}].
-
-init_per_group(_GroupName, Config) -> Config.
-
-end_per_group(_GroupName, Config) -> Config.
-
-init_per_suite(Config) ->
-    ?line application:start(sasl),
-    ?line application:start(mnesia),
-    ?line application:start(otp_mibs),
-
-    ok = ct_snmp:start(Config,snmp_mgr_agent),
-
-    %% Load the mibs that should be tested
-    otp_mib:load(snmp_master_agent),
-
-    Config.
-
-end_per_suite(Config) ->
-    PrivDir = ?config(priv_dir, Config),
-    ConfDir = filename:join(PrivDir,"conf"),
-    DbDir = filename:join(PrivDir,"db"),
-    MgrDir = filename:join(PrivDir, "mgr"),
-
-    %% Uload mibs
-    otp_mib:unload(snmp_master_agent),
-
-    %% Clean up
-    application:stop(snmp),
-    application:stop(mnesia),
-    application:stop(otp_mibs),
-
-    del_dir(ConfDir),
-    del_dir(DbDir),
-    (catch del_dir(MgrDir)),
-    ok.
-
-%%---------------------------------------------------------------------
-%% Test cases
-%%---------------------------------------------------------------------
-
-%% Test that the otp_mibs app file is ok
-app(Config) when is_list(Config) ->
-    ok = ?t:app_test(otp_mibs).
-
-%% Test that the otp_mibs appup file is ok
-appup(Config) when is_list(Config) ->
-    ok = ?t:appup_test(otp_mibs).
-
-nt_basic_types(suite) ->
-    [];
-nt_basic_types(doc) ->
-    ["Query every item of the node table and check its variable "
-     "type and content for sensible values."];
-nt_basic_types(Config) when is_list(Config) ->
-    ok = otp_mib:update_erl_node_table(),
-
-    NodeNameId = ?erlNodeEntry ++ [?erlNodeName, ?NODE_ENTRY],
-    {noError, 0, [NodeNameVal]} = snmp_get([NodeNameId]),
-    #varbind{variabletype = 'OCTET STRING'} = NodeNameVal,
-    true = is_list(NodeNameVal#varbind.value),
-
-    NodeMachineId = ?erlNodeEntry ++ [?erlNodeMachine, ?NODE_ENTRY],
-    {noError, 0, [NodeMachineVal]} = snmp_get([NodeMachineId]),
-    #varbind{variabletype = 'OCTET STRING'} = NodeMachineVal,
-    true = is_list(NodeMachineVal#varbind.value),
-
-    NodeVersionId = ?erlNodeEntry ++ [?erlNodeVersion, ?NODE_ENTRY],
-    {noError, 0, [NodeVersionVal]} = snmp_get([NodeVersionId]),
-    #varbind{variabletype = 'OCTET STRING'} = NodeVersionVal,
-    true = is_list(NodeVersionVal#varbind.value),
-
-    NodeRunQueueId = ?erlNodeEntry ++ [?erlNodeRunQueue, ?NODE_ENTRY],
-    {noError, 0, [NodeRunQueueVal]} = snmp_get([NodeRunQueueId]),
-    #varbind{variabletype = 'Unsigned32'} = NodeRunQueueVal,
-    true = is_integer(NodeRunQueueVal#varbind.value),
-    NodeRunQueueVal#varbind.value >= 0,
-    NodeRunQueueVal#varbind.value =< 4294967295,
-
-    NodeRunTimeId = ?erlNodeEntry ++ [?erlNodeRunTime, ?NODE_ENTRY],
-    {noError, 0, [NodeRunTimeVal]} = snmp_get([NodeRunTimeId]),
-    #varbind{variabletype = 'Counter64'} = NodeRunTimeVal,
-    true = is_integer(NodeRunTimeVal#varbind.value),
-    NodeRunTimeVal#varbind.value >= 0,
-    NodeRunTimeVal#varbind.value =< 18446744073709551615,
-
-    NodeWallClockId = ?erlNodeEntry ++ [?erlNodeWallClock, ?NODE_ENTRY],
-    {noError, 0, [NodeWallClockVal]} = snmp_get([NodeWallClockId]),
-    #varbind{variabletype = 'Counter64'} = NodeWallClockVal,
-    true = is_integer(NodeWallClockVal#varbind.value),
-    NodeWallClockVal#varbind.value >= 0,
-    NodeWallClockVal#varbind.value =< 18446744073709551615,
-
-    NodeReductionsId = ?erlNodeEntry ++ [?erlNodeReductions, ?NODE_ENTRY],
-    {noError, 0, [NodeReductionsVal]} = snmp_get([NodeReductionsId]),
-    #varbind{variabletype = 'Counter64'} = NodeReductionsVal,
-    true = is_integer(NodeReductionsVal#varbind.value),
-    NodeReductionsVal#varbind.value >= 0,
-    NodeReductionsVal#varbind.value =< 18446744073709551615,
-
-    NodeProcessesId = ?erlNodeEntry ++ [?erlNodeProcesses, ?NODE_ENTRY],
-    {noError, 0, [NodeProcessesVal]} = snmp_get([NodeProcessesId]),
-    #varbind{variabletype = 'Unsigned32'} = NodeProcessesVal,
-    true = is_integer(NodeProcessesVal#varbind.value),
-    NodeProcessesVal#varbind.value >= 0,
-    NodeProcessesVal#varbind.value =< 4294967295,
-
-    NodeInBytesId = ?erlNodeEntry ++ [?erlNodeInBytes, ?NODE_ENTRY],
-    {noError, 0, [NodeInBytesVal]} = snmp_get([NodeInBytesId]),
-    #varbind{variabletype = 'Counter64'} = NodeInBytesVal,
-    true = is_integer(NodeInBytesVal#varbind.value),
-    NodeInBytesVal#varbind.value >= 0,
-    NodeInBytesVal#varbind.value =< 18446744073709551615,
-
-    NodeOutBytesId = ?erlNodeEntry ++ [?erlNodeOutBytes, ?NODE_ENTRY],
-    {noError, 0, [NodeOutBytesVal]} = snmp_get([NodeOutBytesId]),
-    #varbind{variabletype = 'Counter64'} = NodeOutBytesVal,
-    true = is_integer(NodeOutBytesVal#varbind.value),
-    NodeOutBytesVal#varbind.value >= 0,
-    NodeOutBytesVal#varbind.value =< 18446744073709551615,
-
-    ok.
-
-nt_high_reduction_count(suite) ->
-    [];
-nt_high_reduction_count(doc) ->
-    ["Check that no error occurs when the erlNodeReductions field"
-     "exceeds the 32bit boundary, this may take about 10min."];
-nt_high_reduction_count(Config) when is_list(Config) ->
-    NodeReductions = ?erlNodeEntry ++ [?erlNodeReductions, ?NODE_ENTRY],
-
-    BumpFun = fun(F, Limit) ->
-		      case erlang:statistics(reductions) of
-			  {Total, _} when Total < Limit ->
-			      F(F, Limit);
-			  _ ->
-			      ok
-		      end
-	      end,
-
-    ok = otp_mib:update_erl_node_table(),
-
-    {noError, 0, [StartVal]} = snmp_get([NodeReductions]),
-    #varbind{variabletype = 'Counter64'} = StartVal,
-    true = is_integer(StartVal#varbind.value),
-    StartVal#varbind.value >= 0,
-    case StartVal#varbind.value =< 4294967295 of
-	true ->
-	    ok = otp_mib:update_erl_node_table(),
-	    BumpFun(BumpFun, 4294967295),
-	    {noError, 0, [EndVal]} = snmp_get([NodeReductions]),
-	    #varbind{variabletype = 'Counter64'} = EndVal,
-	    true = is_integer(EndVal#varbind.value),
-	    EndVal#varbind.value >= 4294967295,
-	    EndVal#varbind.value =< 18446744073709551615;
-	false ->
-	    %% no need to bump more reductions, since the initial get
-	    %% command already returned successfully with a large value
-	    ok
-    end.
-
-%%---------------------------------------------------------------------
-%% Internal functions
-%%---------------------------------------------------------------------
-
-snmp_get(OIdList) ->
-    ct_snmp:get_values(otp_mibs_test, OIdList, snmp_mgr_agent).
-
-del_dir(Dir) ->
-    io:format("Deleting: ~s~n",[Dir]),
-    {ok, Files} = file:list_dir(Dir),
-    FullPathFiles = lists:map(fun(File) -> filename:join(Dir, File) end, Files),
-    lists:foreach(fun file:delete/1, FullPathFiles),
-    file:del_dir(Dir).
diff --git a/lib/otp_mibs/vsn.mk b/lib/otp_mibs/vsn.mk
deleted file mode 100644
index 1b0444afcd..0000000000
--- a/lib/otp_mibs/vsn.mk
+++ /dev/null
@@ -1,5 +0,0 @@
-OTP_MIBS_VSN = 1.2.1
-
-# Note: The branch 'otp_mibs' is defunct as of otp_mibs-1.0.4 and
-# should NOT be used again.
-
diff --git a/lib/parsetools/doc/src/leex.xml b/lib/parsetools/doc/src/leex.xml
index 1227625287..3b82f60201 100644
--- a/lib/parsetools/doc/src/leex.xml
+++ b/lib/parsetools/doc/src/leex.xml
@@ -21,7 +21,7 @@
     <rev>A</rev>
     <file>leex.xml</file>
   </header>
-  <module>leex</module>
+  <module since="">leex</module>
   <modulesummary>Lexical analyzer generator for Erlang</modulesummary>
   <description>
     <p>A regular expression based lexical analyzer generator for
@@ -38,7 +38,8 @@ Token = tuple()</code>
   </section>
   <funcs>
     <func>
-      <name>file(FileName, [, Options]) -> LeexRet</name>
+      <name since="">file(FileName) -> LeexRet</name>
+      <name since="OTP R16B02">file(FileName, Options) -> LeexRet</name>
       <fsummary>Generate a lexical analyzer</fsummary>
       <type>
         <v>FileName = filename()</v>
@@ -124,7 +125,7 @@ Token = tuple()</code>
       </desc>
     </func>
     <func>
-      <name>format_error(ErrorInfo) -> Chars</name>
+      <name since="">format_error(ErrorInfo) -> Chars</name>
       <fsummary>Return an English description of a an error tuple.</fsummary>
       <type>
         <v>Chars = [char() | Chars]</v>
@@ -145,8 +146,8 @@ Token = tuple()</code>
 
   <funcs>
     <func>
-      <name>string(String) -> StringRet</name>
-      <name>string(String, StartLine) -> StringRet</name>
+      <name since="">string(String) -> StringRet</name>
+      <name since="">string(String, StartLine) -> StringRet</name>
       <fsummary>Generated by Leex</fsummary>
       <type>
         <v>String = string()</v>
@@ -163,9 +164,9 @@ Token = tuple()</code>
     </func>
 
     <func>
-      <name>token(Cont, Chars) -> {more,Cont1} | {done,TokenRet,RestChars}
+      <name since="">token(Cont, Chars) -> {more,Cont1} | {done,TokenRet,RestChars}
       </name>
-      <name>token(Cont, Chars, StartLine) -> {more,Cont1} 
+      <name since="">token(Cont, Chars, StartLine) -> {more,Cont1} 
              | {done,TokenRet,RestChars}
       </name>
       <fsummary>Generated by Leex</fsummary>
@@ -198,9 +199,9 @@ io:request(InFile, {get_until,Prompt,Module,token,[Line]})
     </func>
 
     <func>
-      <name>tokens(Cont, Chars) -> {more,Cont1} | {done,TokensRet,RestChars}
+      <name since="">tokens(Cont, Chars) -> {more,Cont1} | {done,TokensRet,RestChars}
       </name>
-      <name>tokens(Cont, Chars, StartLine) -> 
+      <name since="">tokens(Cont, Chars, StartLine) -> 
                {more,Cont1} | {done,TokensRet,RestChars}
       </name>
       <fsummary>Generated by Leex</fsummary>
diff --git a/lib/parsetools/doc/src/yecc.xml b/lib/parsetools/doc/src/yecc.xml
index 5f95b5c150..67a2c95c25 100644
--- a/lib/parsetools/doc/src/yecc.xml
+++ b/lib/parsetools/doc/src/yecc.xml
@@ -32,7 +32,7 @@
     <rev>B</rev>
     <file>yecc.sgml</file>
   </header>
-  <module>yecc</module>
+  <module since="">yecc</module>
   <modulesummary>LALR-1 Parser Generator</modulesummary>
   <description>
     <p>An LALR-1 parser generator for Erlang, similar to <c>yacc</c>.
@@ -46,7 +46,7 @@
   </description>
   <funcs>
     <func>
-      <name>file(Grammarfile [, Options]) -> YeccRet</name>
+      <name since="">file(Grammarfile [, Options]) -> YeccRet</name>
       <fsummary>Give information about resolved and unresolved parse action conflicts.</fsummary>
       <type>
         <v>Grammarfile = filename()</v>
@@ -137,7 +137,7 @@
       </desc>
     </func>
     <func>
-      <name>format_error(Reason) -> Chars</name>
+      <name since="">format_error(Reason) -> Chars</name>
       <fsummary>Return an English description of a an error tuple.</fsummary>
       <type>
         <v>Reason =&nbsp;-&nbsp;as returned by yecc:file/1,2&nbsp;-</v>
diff --git a/lib/public_key/asn1/OTP-PKIX.asn1 b/lib/public_key/asn1/OTP-PKIX.asn1
index 9bcd99fba3..ff3250b383 100644
--- a/lib/public_key/asn1/OTP-PKIX.asn1
+++ b/lib/public_key/asn1/OTP-PKIX.asn1
@@ -233,9 +233,13 @@ countryName ATTRIBUTE-TYPE-AND-VALUE-CLASS ::= {
  -- regarding how to handle and sometimes accept incorrect certificates
  -- we define and use the type below instead of X520countryName
 
+ -- We accept utf8String encoding of the US-ASCII
+ -- country name code and the mix up with other country code systems
+ -- that uses three characters instead of two.
+
  OTP-X520countryname ::= CHOICE {
-       printableString   PrintableString (SIZE (2)),
-       utf8String        UTF8String      (SIZE (2))
+       printableString   PrintableString (SIZE (2..3)),
+       utf8String        UTF8String      (SIZE (2..3))
 }
 
 serialNumber ATTRIBUTE-TYPE-AND-VALUE-CLASS ::= {
diff --git a/lib/public_key/doc/src/notes.xml b/lib/public_key/doc/src/notes.xml
index b3e6023c41..f6bc0dc797 100644
--- a/lib/public_key/doc/src/notes.xml
+++ b/lib/public_key/doc/src/notes.xml
@@ -35,6 +35,21 @@
     <file>notes.xml</file>
   </header>
 
+<section><title>Public_Key 1.6.5</title>
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+          <p>
+	    Add export of dialyzer type</p>
+          <p>
+	    Own Id: OTP-15624</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Public_Key 1.6.4</title>
 
     <section><title>Improvements and New Features</title>
diff --git a/lib/public_key/doc/src/public_key.xml b/lib/public_key/doc/src/public_key.xml
index ee3877ddd0..8db5620686 100644
--- a/lib/public_key/doc/src/public_key.xml
+++ b/lib/public_key/doc/src/public_key.xml
@@ -31,7 +31,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>public_key</module>
+  <module since="">public_key</module>
   <modulesummary>API module for public-key infrastructure.</modulesummary>
   <description>
     <p>Provides functions to handle public-key infrastructure,
@@ -176,7 +176,7 @@
 <funcs>    
 
   <func>
-    <name name="compute_key" arity="2"/>
+    <name name="compute_key" arity="2" since="OTP R16B01"/>
     <fsummary>Computes shared secret.</fsummary>
   <desc>
     <p>Computes shared secret.</p>
@@ -184,7 +184,7 @@
   </func>
 
   <func>
-    <name name="compute_key" arity="3"/>
+    <name name="compute_key" arity="3" since="OTP R16B01"/>
     <fsummary>Computes shared secret.</fsummary>
   <desc>
     <p>Computes shared secret.</p>
@@ -192,8 +192,8 @@
   </func>
 
   <func>
-    <name name="decrypt_private" arity="2"/>
-    <name name="decrypt_private" arity="3"/>
+    <name name="decrypt_private" arity="2" since="OTP R14B"/>
+    <name name="decrypt_private" arity="3" since="OTP R14B"/>
     <fsummary>Public-key decryption.</fsummary>
   <desc> 
     <p>Public-key decryption using the private key. See also <seealso
@@ -202,8 +202,8 @@
   </func>
 
   <func>
-    <name name="decrypt_public" arity="2"/>
-    <name name="decrypt_public" arity="3"/>
+    <name name="decrypt_public" arity="2" since="OTP R14B"/>
+    <name name="decrypt_public" arity="3" since="OTP R14B"/>
     <fsummary>Public-key decryption.</fsummary>
   <desc> 
     <p>Public-key decryption using the public key. See also <seealso
@@ -212,7 +212,7 @@
   </func> 
 
   <func>
-    <name name="der_decode" arity="2"/>
+    <name name="der_decode" arity="2" since="OTP R14B"/>
     <fsummary>Decodes a public-key ASN.1 DER encoded entity.</fsummary>
     <desc>
       <p>Decodes a public-key ASN.1 DER encoded entity.</p>
@@ -220,7 +220,7 @@
   </func>
 
   <func>
-    <name name="der_encode" arity="2"/>
+    <name name="der_encode" arity="2" since="OTP R14B"/>
     <fsummary>Encodes a public-key entity with ASN.1 DER encoding.</fsummary>
   <desc> 
     <p>Encodes a public-key entity with ASN.1 DER encoding.</p>
@@ -228,7 +228,7 @@
   </func>
 
   <func>
-    <name name="dh_gex_group" arity="4"/>
+    <name name="dh_gex_group" arity="4" since="OTP 18.2"/>
     <fsummary>Selects a group for Diffie-Hellman key exchange</fsummary>
     <desc>
       <p>Selects a group for Diffie-Hellman key exchange with the key size in the range <c>MinSize...MaxSize</c>
@@ -249,8 +249,8 @@
   </func>
 
   <func>
-    <name name="encrypt_private" arity="2"/>
-    <name name="encrypt_private" arity="3"/>
+    <name name="encrypt_private" arity="2" since="OTP R14B"/>
+    <name name="encrypt_private" arity="3" since="OTP 21.1"/>
     <fsummary>Public-key encryption using the private key.</fsummary>
   <desc> 
     <p>Public-key encryption using the private key.
@@ -260,8 +260,8 @@
   </func>   
 
   <func>
-    <name name="encrypt_public" arity="2"/>
-    <name name="encrypt_public" arity="3"/>
+    <name name="encrypt_public" arity="2" since="OTP R14B"/>
+    <name name="encrypt_public" arity="3" since="OTP 21.1"/>
     <fsummary>Public-key encryption using the public key.</fsummary>
   <desc> 
     <p>Public-key encryption using the public key. See also <seealso
@@ -270,7 +270,7 @@
   </func>   
   
   <func>
-    <name name="generate_key" arity="1"/>
+    <name name="generate_key" arity="1" since="OTP R16B01"/>
     <fsummary>Generates a new keypair.</fsummary>
   <desc>
     <p>Generates a new keypair. Note that except for Diffie-Hellman
@@ -281,7 +281,7 @@
   </func>
 
   <func>
-    <name name="pem_decode" arity="1"/>
+    <name name="pem_decode" arity="1" since="OTP R14B"/>
     <fsummary>Decodes PEM binary data and returns
     entries as ASN.1 DER encoded entities.</fsummary>
   <desc> 
@@ -291,7 +291,7 @@
   </func> 
     
   <func>
-    <name name="pem_encode" arity="1"/>
+    <name name="pem_encode" arity="1" since="OTP R14B"/>
     <fsummary>Creates a PEM binary.</fsummary>
     <desc> 
       <p>Creates a PEM binary.</p> 
@@ -299,8 +299,8 @@
   </func>
 
   <func>
-    <name name="pem_entry_decode" arity="1"/>
-    <name name="pem_entry_decode" arity="2"/>
+    <name name="pem_entry_decode" arity="1" since="OTP R14B"/>
+    <name name="pem_entry_decode" arity="2" since="OTP R14B"/>
     <fsummary>Decodes a PEM entry.</fsummary>
   <desc> 
     <p>Decodes a PEM entry. <c>pem_decode/1</c> returns a list of PEM
@@ -311,8 +311,8 @@
   </func>
 
   <func>
-    <name name="pem_entry_encode" arity="2"/>
-    <name name="pem_entry_encode" arity="3"/>
+    <name name="pem_entry_encode" arity="2" since="OTP R14B"/>
+    <name name="pem_entry_encode" arity="3" since="OTP R14B"/>
     <fsummary>Creates a PEM entry that can be fed to <c>pem_encode/1</c>.</fsummary>
     <desc> 
       <p>Creates a PEM entry that can be feed to <c>pem_encode/1</c>.</p>
@@ -326,7 +326,7 @@
   </func>
 
   <func>
-    <name name="pkix_decode_cert" arity="2"/>
+    <name name="pkix_decode_cert" arity="2" since=""/>
     <fsummary>Decodes an ASN.1 DER-encoded PKIX x509 certificate.</fsummary>
     <desc> 
       <p>Decodes an ASN.1 DER-encoded PKIX certificate. Option <c>otp</c>
@@ -337,7 +337,7 @@
   </func>
 
   <func>
-    <name name="pkix_encode" arity="3"/>
+    <name name="pkix_encode" arity="3" since="OTP R14B"/>
     <fsummary>DER encodes a PKIX x509 certificate or part of such a
     certificate.</fsummary>
   <desc> 
@@ -349,7 +349,7 @@
   </func>
 
  <func>
-   <name name="pkix_is_issuer" arity="2"/>
+   <name name="pkix_is_issuer" arity="2" since="OTP R14B"/>
    <fsummary>Checks if <c>IssuerCert</c> issued <c>Cert</c>.</fsummary>
    <desc> 
      <p>Checks if <c>IssuerCert</c> issued <c>Cert</c>.</p> 
@@ -357,7 +357,7 @@
  </func>
   
  <func>
-   <name name="pkix_is_fixed_dh_cert" arity="1"/>
+   <name name="pkix_is_fixed_dh_cert" arity="1" since="OTP R14B"/>
    <fsummary>Checks if a certificate is a fixed Diffie-Hellman certificate.</fsummary>
    <desc> 
      <p>Checks if a certificate is a fixed Diffie-Hellman certificate.</p> 
@@ -365,7 +365,7 @@
  </func>  
   
  <func>
-   <name name="pkix_is_self_signed" arity="1"/>
+   <name name="pkix_is_self_signed" arity="1" since="OTP R14B"/>
    <fsummary>Checks if a certificate is self-signed.</fsummary>
    <desc> 
      <p>Checks if a certificate is self-signed.</p> 
@@ -373,7 +373,7 @@
  </func>
 
  <func>
-   <name name="pkix_issuer_id" arity="2"/>
+   <name name="pkix_issuer_id" arity="2" since="OTP R14B"/>
    <fsummary>Returns the issuer id.</fsummary>
    <desc> 
      <p>Returns the issuer id.</p> 
@@ -381,7 +381,7 @@
  </func>
  
  <func>
-   <name name="pkix_normalize_name" arity="1"/>
+   <name name="pkix_normalize_name" arity="1" since="OTP R14B"/>
    <fsummary>Normalizes an issuer name so that it can be easily
    compared to another issuer name.</fsummary>
    <desc> 
@@ -391,7 +391,7 @@
  </func>
 
   <func>
-    <name>pkix_path_validation(TrustedCert, CertChain, Options) -> {ok, {PublicKeyInfo, PolicyTree}} | {error, {bad_cert, Reason}} </name>
+    <name since="OTP R16B">pkix_path_validation(TrustedCert, CertChain, Options) -> {ok, {PublicKeyInfo, PolicyTree}} | {error, {bad_cert, Reason}} </name>
     <fsummary>Performs a basic path validation according to RFC 5280.</fsummary>
      <type>
        <v>TrustedCert =  #'OTPCertificate'{} | der_encoded() | atom()</v>
@@ -423,7 +423,7 @@
        <p>Available options:</p>
 
        <taglist>
-	<tag>{verify_fun, fun()}</tag>
+	<tag>{verify_fun, {fun(), InitialUserState::term()}</tag>
 	<item>
 	  <p>The fun must be defined as:</p>
 
@@ -491,7 +491,7 @@ fun(OtpCert :: #'OTPCertificate'{},
    </func>
 
     <func>  
-      <name name="pkix_crl_issuer" arity="1"/>
+      <name name="pkix_crl_issuer" arity="1" since="OTP 17.5"/>
       <fsummary>Returns the issuer of the <c>CRL</c>.</fsummary>
       <desc> 
 	<p>Returns the issuer of the <c>CRL</c>.</p>
@@ -499,7 +499,7 @@ fun(OtpCert :: #'OTPCertificate'{},
     </func> 
    
    <func>
-     <name name="pkix_crls_validate" arity="3"/>
+     <name name="pkix_crls_validate" arity="3" since="OTP R16B"/>
      <fsummary>Performs CRL validation.</fsummary>
      <desc>
       <p>Performs CRL validation. It is intended to be called from
@@ -541,7 +541,7 @@ fun(#'DistributionPoint'{}, #'CertificateList'{},
 
 	<tag>{undetermined_details, boolean()}</tag>
 	<item>
-	  <p>Defaults to false. When revocation status can not be
+	  <p>Defaults to false. When revocation status cannot be
 	  determined, and this option is set to true, details of why no
 	  CRLs where accepted are included in the return value.</p>
 	</item>
@@ -551,7 +551,7 @@ fun(#'DistributionPoint'{}, #'CertificateList'{},
    </func>
    
    <func>  
-     <name name="pkix_crl_verify" arity="2"/>
+     <name name="pkix_crl_verify" arity="2" since="OTP 17.5"/>
      <fsummary> Verify that  <c>Cert</c>  is the <c> CRL</c>  signer. </fsummary>
      <desc> 
        <p>Verify that <c>Cert</c> is the <c>CRL</c> signer.</p>
@@ -559,7 +559,7 @@ fun(#'DistributionPoint'{}, #'CertificateList'{},
    </func>
 
    <func>  
-     <name name="pkix_dist_point" arity="1"/>
+     <name name="pkix_dist_point" arity="1" since="OTP 17.5"/>
      <fsummary>Creates a distribution point for CRLs issued by the same issuer as <c>Cert</c>.</fsummary>
      <desc> 
        <p>Creates a distribution point for CRLs issued by the same issuer as <c>Cert</c>.
@@ -570,7 +570,7 @@ fun(#'DistributionPoint'{}, #'CertificateList'{},
    </func>
    
    <func>  
-     <name name="pkix_dist_points" arity="1"/>
+     <name name="pkix_dist_points" arity="1" since="OTP 17.5"/>
      <fsummary> Extracts distribution points from the certificates extensions.</fsummary>
      <desc> 
        <p> Extracts distribution points from the certificates extensions.</p>
@@ -578,7 +578,7 @@ fun(#'DistributionPoint'{}, #'CertificateList'{},
  </func>
    
   <func>
-    <name name="pkix_match_dist_point" arity="2"/>
+    <name name="pkix_match_dist_point" arity="2" since="OTP 19.0"/>
     <fsummary>Checks whether the given distribution point matches the
     Issuing Distribution Point of the CRL.</fsummary>
     <desc>
@@ -590,7 +590,7 @@ fun(#'DistributionPoint'{}, #'CertificateList'{},
   </func>
 
   <func>
-    <name name="pkix_sign" arity="2"/>
+    <name name="pkix_sign" arity="2" since="OTP R14B"/>
     <fsummary>Signs certificate.</fsummary>
     <desc> 
       <p>Signs an 'OTPTBSCertificate'. Returns the corresponding
@@ -599,7 +599,7 @@ fun(#'DistributionPoint'{}, #'CertificateList'{},
   </func> 
 
   <func>
-    <name name="pkix_sign_types" arity="1"/>
+    <name name="pkix_sign_types" arity="1" since="OTP R16B01"/>
     <fsummary>Translates signature algorithm OID to Erlang digest and signature algorithm types.</fsummary>
     <desc>
       <p>Translates signature algorithm OID to Erlang digest and signature types.
@@ -609,8 +609,8 @@ fun(#'DistributionPoint'{}, #'CertificateList'{},
   </func>
 
   <func>
-    <name>pkix_test_data(Options) -> Config </name>
-    <name>pkix_test_data([chain_opts()]) -> [conf_opt()]</name>
+    <name since="OTP 20.1">pkix_test_data(Options) -> Config </name>
+    <name since="OTP 20.1">pkix_test_data([chain_opts()]) -> [conf_opt()]</name>
     <fsummary>Creates certificate test data.</fsummary>
     <type>
       <v>Options = #{chain_type() := chain_opts()} </v>
@@ -644,7 +644,7 @@ fun(#'DistributionPoint'{}, #'CertificateList'{},
       <v>conf_opt() = {cert, der_encoded()} | {key, PrivateKey} |{cacerts, [der_encoded()]}</v>
       <d>
 	This is a subset of the type
-	<seealso marker="ssl:ssl#type-ssloption"> ssl:ssl_option()</seealso>.
+	<seealso marker="ssl:ssl#type-tls_option"> ssl:tls_option()</seealso>.
 	<c>PrivateKey</c> is what
 	<seealso marker="#generate_key-1">generate_key/1</seealso>
 	returns.
@@ -736,13 +736,13 @@ fun(#'DistributionPoint'{}, #'CertificateList'{},
 	  
 	<note><p>
 	Note that the generated certificates and keys does not provide a formally correct PKIX-trust-chain 
-	and they can not be used to achieve real security. This function is provided for testing purposes only.
+	and they cannot be used to achieve real security. This function is provided for testing purposes only.
 </p></note>
     </desc>
   </func>
   
   <func>
-    <name>pkix_test_root_cert(Name, Options) -> RootCert</name>
+    <name since="OTP 20.2">pkix_test_root_cert(Name, Options) -> RootCert</name>
     <fsummary>Generates a test data root cert.</fsummary>
     <type>
       <v>Name = string()</v>
@@ -772,7 +772,7 @@ fun(#'DistributionPoint'{}, #'CertificateList'{},
   </func>
 
   <func>  
-    <name name="pkix_verify" arity="2"/>
+    <name name="pkix_verify" arity="2" since="OTP R14B"/>
     <fsummary>Verifies PKIX x.509 certificate signature.</fsummary>
   <desc> 
     <p>Verifies PKIX x.509 certificate signature.</p>
@@ -780,8 +780,8 @@ fun(#'DistributionPoint'{}, #'CertificateList'{},
   </func> 
 
   <func>
-    <name>pkix_verify_hostname(Cert, ReferenceIDs) -> boolean()</name>
-    <name>pkix_verify_hostname(Cert, ReferenceIDs, Opts) -> boolean()</name>
+    <name since="OTP 19.3">pkix_verify_hostname(Cert, ReferenceIDs) -> boolean()</name>
+    <name since="OTP 19.3">pkix_verify_hostname(Cert, ReferenceIDs, Opts) -> boolean()</name>
     <fsummary>Verifies that a PKIX x.509 certificate <i>presented identifier</i> (e.g hostname) is
     an expected one.</fsummary>
     <type>
@@ -813,7 +813,8 @@ fun(#'DistributionPoint'{}, #'CertificateList'{},
       <p>The <c>{OtherRefId,term()}</c> is defined by the user and is passed to the <c>match_fun</c>, if defined.
       If the term in <c>OtherRefId</c> is a binary, it will be converted to a string.
       </p>
-      <p>The <c>ip</c> Reference ID takes an <seealso marker="inet:inet#type-ip_address">inet:ip_address()</seealso>
+      <p>The <c>ip</c> Reference ID takes an
+      <seealso marker="kernel:inet#type-ip_address">inet:ip_address()</seealso>
       or an ip address in string format (E.g "10.0.1.1" or "1234::5678:9012") as second element.
       </p>
       <p>The options are:</p>
@@ -864,7 +865,7 @@ end
   </func>
 
   <func>
-    <name>pkix_verify_hostname_match_fun(Protcol) ->  fun(RefId | FQDN::string(), PresentedID) -> boolean() | default</name>
+    <name since="OTP 21.0">pkix_verify_hostname_match_fun(Protcol) ->  fun(RefId | FQDN::string(), PresentedID) -> boolean() | default</name>
     <fsummary>Returns a fun that is intendended as argument to the match_fun option in pkix_verify_hostname/3.
     </fsummary>
     <type>
@@ -889,8 +890,8 @@ end
   
 
   <func>
-    <name name="sign" arity="3"/>
-    <name name="sign" arity="4"/>
+    <name name="sign" arity="3" since=""/>
+    <name name="sign" arity="4" since="OTP 20.1"/>
     <fsummary>Creates a digital signature.</fsummary>
   <desc>
     <p>Creates a digital signature.</p> 
@@ -901,7 +902,7 @@ end
   </func>   
 
   <func>
-    <name name="ssh_decode" arity="2"/>
+    <name name="ssh_decode" arity="2" since="OTP R14B03"/>
     <fsummary>Decodes an SSH file-binary.</fsummary>
     <desc>
       <p>Decodes an SSH file-binary. In the case of <c>known_hosts</c> or
@@ -933,7 +934,7 @@ end
   </func>
 
   <func>
-    <name name="ssh_encode" arity="2"/>
+    <name name="ssh_encode" arity="2" since="OTP R14B03"/>
     <fsummary>Encodes a list of SSH file entries to a binary.</fsummary>
     <desc>
       <p>Encodes a list of SSH file entries (public keys and attributes) to a binary. Possible
@@ -947,9 +948,9 @@ end
   </func>
 
   <func>
-    <name>ssh_hostkey_fingerprint(HostKey) -> string()</name>
-    <name>ssh_hostkey_fingerprint(DigestType, HostKey) -> string()</name>
-    <name>ssh_hostkey_fingerprint([DigestType], HostKey) -> [string()]</name>
+    <name since="OTP 19.2">ssh_hostkey_fingerprint(HostKey) -> string()</name>
+    <name since="OTP 19.2">ssh_hostkey_fingerprint(DigestType, HostKey) -> string()</name>
+    <name since="OTP 19.2">ssh_hostkey_fingerprint([DigestType], HostKey) -> [string()]</name>
     <fsummary>Calculates a ssh fingerprint for a hostkey.</fsummary>
     <type>
       <v>HostKey = <seealso marker="#type-public_key">public_key()</seealso></v>
@@ -982,8 +983,8 @@ end
   </func>
 
   <func>
-    <name name="verify" arity="4"/>
-    <name name="verify" arity="5"/>
+    <name name="verify" arity="4" since="OTP R14B"/>
+    <name name="verify" arity="5" since="OTP 20.1"/>
     <fsummary>Verifies a digital signature.</fsummary>
   <desc>
     <p>Verifies a digital signature.</p>
@@ -993,7 +994,7 @@ end
   </func>
 
   <func>
-    <name name="short_name_hash" arity="1"/>
+    <name name="short_name_hash" arity="1" since="OTP 19.0"/>
     <fsummary>Generates a short hash of an issuer name.</fsummary>
     <desc>
       <p>Generates a short hash of an issuer name.  The hash is
diff --git a/lib/public_key/src/pubkey_pbe.erl b/lib/public_key/src/pubkey_pbe.erl
index 806f7c5b0f..e6bcedd1b1 100644
--- a/lib/public_key/src/pubkey_pbe.erl
+++ b/lib/public_key/src/pubkey_pbe.erl
@@ -42,15 +42,14 @@
 encode(Data, Password, "DES-CBC" = Cipher, KeyDevParams) ->
     {Key, IV} = password_to_key_and_iv(Password, Cipher, KeyDevParams),
     crypto:block_encrypt(des_cbc, Key, IV, pbe_pad(Data, KeyDevParams));
-
 encode(Data, Password, "DES-EDE3-CBC" = Cipher, KeyDevParams) ->
     {Key, IV} = password_to_key_and_iv(Password, Cipher, KeyDevParams),
     <<Key1:8/binary, Key2:8/binary, Key3:8/binary>> = Key,
     crypto:block_encrypt(des3_cbc, [Key1, Key2, Key3], IV, pbe_pad(Data));
-
 encode(Data, Password, "RC2-CBC" = Cipher, KeyDevParams) ->
     {Key, IV} = password_to_key_and_iv(Password, Cipher, KeyDevParams),
     crypto:block_encrypt(rc2_cbc, Key, IV, pbe_pad(Data, KeyDevParams)).
+
 %%--------------------------------------------------------------------
 -spec decode(binary(), string(), string(), term()) -> binary().
 %%
@@ -59,21 +58,20 @@ encode(Data, Password, "RC2-CBC" = Cipher, KeyDevParams) ->
 decode(Data, Password,"DES-CBC"= Cipher, KeyDevParams) ->
     {Key, IV} = password_to_key_and_iv(Password, Cipher, KeyDevParams),
     crypto:block_decrypt(des_cbc, Key, IV, Data);
-
 decode(Data, Password,"DES-EDE3-CBC" = Cipher, KeyDevParams) ->
     {Key, IV} = password_to_key_and_iv(Password, Cipher, KeyDevParams),
     <<Key1:8/binary, Key2:8/binary, Key3:8/binary>> = Key,
     crypto:block_decrypt(des3_cbc, [Key1, Key2, Key3], IV, Data);
-
 decode(Data, Password,"RC2-CBC"= Cipher, KeyDevParams) ->
     {Key, IV} = password_to_key_and_iv(Password, Cipher, KeyDevParams),
     crypto:block_decrypt(rc2_cbc, Key, IV, Data);
+decode(Data, Password,"AES-128-CBC"= Cipher, KeyDevParams) ->
+    {Key, IV} = password_to_key_and_iv(Password, Cipher, KeyDevParams),
+    crypto:block_decrypt(aes_cbc128, Key, IV, Data);
+decode(Data, Password,"AES-256-CBC"= Cipher, KeyDevParams) ->
+    {Key, IV} = password_to_key_and_iv(Password, Cipher, KeyDevParams),
+    crypto:block_decrypt(aes_cbc256, Key, IV, Data).
 
-decode(Data, Password,"AES-128-CBC"= Cipher, IV) ->
-    %% PKCS5_SALT_LEN is 8 bytes
-    <<Salt:8/binary,_/binary>> = IV,
-    {Key, _} = password_to_key_and_iv(Password, Cipher, Salt),
-    crypto:block_decrypt(aes_cbc128, Key, IV, Data).
 
 %%--------------------------------------------------------------------
 -spec pbdkdf1(string(), iodata(), integer(), atom()) -> binary().
@@ -131,13 +129,15 @@ password_to_key_and_iv(Password, _Cipher, {#'PBEParameter'{salt = Salt,
     <<Key:8/binary, IV:8/binary, _/binary>> 
 	= pbdkdf1(Password, Salt, Count, Hash),
     {Key, IV};
-password_to_key_and_iv(Password, Cipher, Salt) ->
- KeyLen = derived_key_length(Cipher, undefined),
+password_to_key_and_iv(Password, Cipher, KeyDevParams) ->
+    %% PKCS5_SALT_LEN is 8 bytes
+    <<Salt:8/binary,_/binary>> = KeyDevParams,
+    KeyLen = derived_key_length(Cipher, undefined),
     <<Key:KeyLen/binary, _/binary>> = 
 	pem_encrypt(<<>>, Password, Salt, ceiling(KeyLen div 16), <<>>, md5),
     %% Old PEM encryption does not use standard encryption method
-    %% pbdkdf1 and uses then salt as IV 
-    {Key, Salt}.
+    %% pbdkdf1 
+    {Key, KeyDevParams}.
 pem_encrypt(_, _, _, 0, Acc, _) ->
     Acc;
 pem_encrypt(Prev, Password, Salt, Count, Acc, Hash) ->
@@ -267,7 +267,9 @@ derived_key_length(Cipher,_) when (Cipher == ?'des-EDE3-CBC') or
 				  (Cipher == "DES-EDE3-CBC") ->
     24;
 derived_key_length(Cipher,_) when (Cipher == "AES-128-CBC") ->
-    16.
+    16;
+derived_key_length(Cipher,_) when (Cipher == "AES-256-CBC") ->
+    32.
 
 cipher(#'PBES2-params_encryptionScheme'{algorithm = ?'desCBC'}) ->
     "DES-CBC";
diff --git a/lib/public_key/src/pubkey_pem.erl b/lib/public_key/src/pubkey_pem.erl
index d7e5bc3ad8..0fd1453f7c 100644
--- a/lib/public_key/src/pubkey_pem.erl
+++ b/lib/public_key/src/pubkey_pem.erl
@@ -101,10 +101,10 @@ encode_pem_entry({'PrivateKeyInfo', Der, EncParams}) ->
     EncDer = encode_encrypted_private_keyinfo(Der, EncParams),
     StartStr = pem_start('EncryptedPrivateKeyInfo'),
     [StartStr, "\n", b64encode_and_split(EncDer), "\n", pem_end(StartStr) ,"\n\n"];
-encode_pem_entry({Type, Der, {Cipher, Salt}}) ->
+encode_pem_entry({Type, Decrypted, {Cipher, Salt}}) ->
     StartStr = pem_start(Type),
     [StartStr,"\n", pem_decrypt(),"\n", pem_decrypt_info(Cipher, Salt),"\n\n",
-     b64encode_and_split(Der), "\n", pem_end(StartStr) ,"\n\n"].
+     b64encode_and_split(Decrypted), "\n", pem_end(StartStr) ,"\n\n"].
 
 decode_pem_entries([], Entries) ->
     lists:reverse(Entries);
diff --git a/lib/public_key/src/public_key.erl b/lib/public_key/src/public_key.erl
index 75d40d2e8a..47c5dbb95a 100644
--- a/lib/public_key/src/public_key.erl
+++ b/lib/public_key/src/public_key.erl
@@ -66,7 +66,7 @@
 
 -export_type([public_key/0, private_key/0, pem_entry/0,
 	      pki_asn1_type/0, asn1_type/0, ssh_file/0, der_encoded/0,
-              key_params/0, digest_type/0]).
+              key_params/0, digest_type/0, issuer_name/0, oid/0]).
 
 -type public_key()           ::  rsa_public_key() | dsa_public_key() | ec_public_key() | ed_public_key() .
 -type private_key()          ::  rsa_private_key() | dsa_private_key() | ec_private_key() | ed_private_key() .
diff --git a/lib/public_key/test/pbe_SUITE.erl b/lib/public_key/test/pbe_SUITE.erl
index 523c9e2515..1136267411 100644
--- a/lib/public_key/test/pbe_SUITE.erl
+++ b/lib/public_key/test/pbe_SUITE.erl
@@ -37,7 +37,7 @@ all() ->
     [
      pbdkdf1,
      pbdkdf2,
-     old_enc,
+     old_pbe,
      pbes1,
      pbes2].
 
@@ -197,23 +197,11 @@ pbdkdf2(Config) when is_list(Config) ->
 	= pubkey_pbe:pbdkdf2("pass\0word", 
 			     "sa\0lt", 4096, 16, fun crypto:hmac/4, sha, 20).
 
-old_enc() ->
-    [{doc,"Tests encode/decode RSA key encrypted with different ciphers using old PEM encryption scheme"}].
-old_enc(Config) when is_list(Config) ->
-    Datadir = proplists:get_value(data_dir, Config),
-    %% key generated with ssh-keygen -N hello_aes -f old_aes_128_cbc_enc_key.pem
-    {ok, PemAesCbc} = file:read_file(filename:join(Datadir, "old_aes_128_cbc_enc_key.pem")),
-    
-    PemAesCbcEntry = public_key:pem_decode(PemAesCbc),
-    ct:print("Pem entry: ~p" , [PemAesCbcEntry]),
-    [{'RSAPrivateKey', _, {"AES-128-CBC",_}} = PubAesCbcEntry] = PemAesCbcEntry,
-    #'RSAPrivateKey'{} = public_key:pem_entry_decode(PubAesCbcEntry, "hello_aes").
-
 pbes1() ->
     [{doc,"Tests encode/decode EncryptedPrivateKeyInfo encrypted with different ciphers using PBES1"}].
 pbes1(Config) when is_list(Config) ->
     decode_encode_key_file("pbes1_des_cbc_md5_enc_key.pem", "password", "DES-CBC", Config).
-    
+
 pbes2() ->
     [{doc,"Tests encode/decode EncryptedPrivateKeyInfo encrypted with different ciphers using PBES2"}].
 pbes2(Config) when is_list(Config) ->
@@ -225,13 +213,33 @@ pbes2(Config) when is_list(Config) ->
 	false ->
 	    ok
     end.
+old_pbe() ->
+    [{doc,"Tests encode/decode with old format used before PBE"}].
+old_pbe(Config) when is_list(Config) ->
+     Datadir = proplists:get_value(data_dir, Config),
+     % key generated with ssh-keygen -N hello_aes -f old_aes_128_cbc.pem
+    {ok, PemAes128Cbc} = file:read_file(filename:join(Datadir, "old_aes_128_cbc.pem")),
+    
+    PemAes128CbcEntries = public_key:pem_decode(PemAes128Cbc),
+    ct:print("Pem entry: ~p" , [PemAes128CbcEntries]),
+    [{'RSAPrivateKey', _, {"AES-128-CBC",_}} = Aes128CbcEntry] = PemAes128CbcEntries,
+    #'RSAPrivateKey'{} = Key = public_key:pem_entry_decode(Aes128CbcEntry, "hello_aes"),
+    
 
+    %% Converted with openssl rsa -in old_aes_128_cbc.pem -out old_aes_256_cbc.pem -aes256
+   {ok, PemAes256Cbc} = file:read_file(filename:join(Datadir, "old_aes_256_cbc.pem")),
+    
+    PemAes256CbcEntries = public_key:pem_decode(PemAes256Cbc),
+    ct:print("Pem entry: ~p" , [PemAes256CbcEntries]),
+    [{'RSAPrivateKey', _, {"AES-256-CBC",_}} = Aes256CbcEntry] = PemAes256CbcEntries,
+    Key = public_key:pem_entry_decode(Aes256CbcEntry, "hello_aes").
+    
 decode_encode_key_file(File, Password, Cipher, Config) ->
     Datadir = proplists:get_value(data_dir, Config),
     {ok, PemKey} = file:read_file(filename:join(Datadir, File)),
     
     PemEntry = public_key:pem_decode(PemKey),
-    ct:print("Pem entry: ~p" , [PemEntry]),
+    ct:pal("Pem entry: ~p" , [PemEntry]),
     [{Asn1Type, _, {Cipher,_} = CipherInfo} = PubEntry] = PemEntry,
     #'RSAPrivateKey'{} = KeyInfo = public_key:pem_entry_decode(PubEntry, Password),
     PemKey1 = public_key:pem_encode([public_key:pem_entry_encode(Asn1Type, KeyInfo, {CipherInfo, Password})]),
diff --git a/lib/public_key/test/pbe_SUITE_data/old_aes_128_cbc_enc_key.pem b/lib/public_key/test/pbe_SUITE_data/old_aes_128_cbc.pem
index 34c7543f30..34c7543f30 100644
--- a/lib/public_key/test/pbe_SUITE_data/old_aes_128_cbc_enc_key.pem
+++ b/lib/public_key/test/pbe_SUITE_data/old_aes_128_cbc.pem
diff --git a/lib/public_key/test/pbe_SUITE_data/old_aes_256_cbc.pem b/lib/public_key/test/pbe_SUITE_data/old_aes_256_cbc.pem
new file mode 100644
index 0000000000..e6aec2869d
--- /dev/null
+++ b/lib/public_key/test/pbe_SUITE_data/old_aes_256_cbc.pem
@@ -0,0 +1,30 @@
+-----BEGIN RSA PRIVATE KEY-----
+Proc-Type: 4,ENCRYPTED
+DEK-Info: AES-256-CBC,ABDA22398E511E9465983E1A50706044
+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-----END RSA PRIVATE KEY-----
diff --git a/lib/public_key/vsn.mk b/lib/public_key/vsn.mk
index 5e2643f0ea..11c06fb158 100644
--- a/lib/public_key/vsn.mk
+++ b/lib/public_key/vsn.mk
@@ -1 +1 @@
-PUBLIC_KEY_VSN = 1.6.4
+PUBLIC_KEY_VSN = 1.6.5
diff --git a/lib/reltool/doc/src/reltool.xml b/lib/reltool/doc/src/reltool.xml
index 874cda8369..136ec2ed69 100644
--- a/lib/reltool/doc/src/reltool.xml
+++ b/lib/reltool/doc/src/reltool.xml
@@ -33,7 +33,7 @@
     <date></date>
     <rev>%VSN%</rev>
   </header>
-  <module>reltool</module>
+  <module since="">reltool</module>
   <modulesummary>Main API of the Reltool application</modulesummary>
   <description>
     <p>This is an interface module for the Reltool application.</p>
@@ -503,6 +503,7 @@ sys()               = {root_dir, root_dir()}
                     | {incl_cond, incl_cond()}
                     | {boot_rel, boot_rel()}
                     | {rel, rel_name(), rel_vsn(), [rel_app()]}
+                    | {rel, rel_name(), rel_vsn(), [rel_app()], [rel_opt()]}
                     | {relocatable, relocatable()}
                     | {app_file, app_file()}
                     | {debug_info, debug_info()}
@@ -534,6 +535,7 @@ rel_app()           = app_name()
                     | {app_name(), app_type()} 
                     | {app_name(), [incl_app()]}
                     | {app_name(), app_type(), [incl_app()]}
+rel_opt()           = {load_dot_erlang, boolean()}
 app_name()          = atom()
 app_type()          = permanent | transient | temporary | load | none
 app_vsn()           = string()
@@ -591,7 +593,7 @@ target_spec()       = [target_spec()]
 
   <funcs>
     <func>
-      <name>create_target(Server, TargetDir) -> ok | {error, Reason}</name>
+      <name since="">create_target(Server, TargetDir) -> ok | {error, Reason}</name>
       <fsummary>Create a target system</fsummary>
       <type>
         <v>Server     = server()</v>
@@ -604,7 +606,7 @@ target_spec()       = [target_spec()]
     </func>
     
     <func>
-      <name>eval_target_spec(TargetSpec, RootDir, TargetDir) -> ok | {error, Reason}</name>
+      <name since="">eval_target_spec(TargetSpec, RootDir, TargetDir) -> ok | {error, Reason}</name>
       <fsummary>Create a target system</fsummary>
       <type>
         <v>TargetSpec = target_spec()</v>
@@ -655,7 +657,7 @@ target_spec()       = [target_spec()]
     </func>
 
     <func>
-      <name>get_config(Server) -> {ok, Config} | {error, Reason}</name>
+      <name since="">get_config(Server) -> {ok, Config} | {error, Reason}</name>
       <fsummary>Get reltool configuration</fsummary>
       <type>
         <v>Server  = server()</v>
@@ -667,7 +669,7 @@ target_spec()       = [target_spec()]
     </func>
 
     <func>
-      <name>get_config(Server, InclDefaults, InclDerived) -> {ok, Config} | {error, Reason}</name>
+      <name since="">get_config(Server, InclDefaults, InclDerived) -> {ok, Config} | {error, Reason}</name>
       <fsummary>Get reltool configuration</fsummary>
       <type>
         <v>Server        = server()</v>
@@ -685,7 +687,7 @@ target_spec()       = [target_spec()]
     </func>
 
     <func>
-      <name>get_rel(Server, Relname) -> {ok, RelFile} | {error, Reason}</name>
+      <name since="">get_rel(Server, Relname) -> {ok, RelFile} | {error, Reason}</name>
       <fsummary>Get contents of a release file</fsummary>
       <type>
         <v>Server  = server()</v>
@@ -698,7 +700,7 @@ target_spec()       = [target_spec()]
     </func>
 
     <func>
-      <name>get_script(Server, Relname) -> {ok, ScriptFile | {error, Reason}</name>
+      <name since="">get_script(Server, Relname) -> {ok, ScriptFile | {error, Reason}</name>
       <fsummary>Get contents of a boot script file</fsummary>
       <type>
         <v>Server     = server()</v>
@@ -711,7 +713,7 @@ target_spec()       = [target_spec()]
     </func>
 
     <func>
-      <name>get_status(Server) -> {ok, [Warning]} | {error, Reason}</name>
+      <name since="OTP R14B">get_status(Server) -> {ok, [Warning]} | {error, Reason}</name>
       <fsummary>Get contents of a release file</fsummary>
       <type>
         <v>Server  = server()</v>
@@ -722,7 +724,7 @@ target_spec()       = [target_spec()]
     </func>
 
     <func>
-      <name>get_server(WindowPid) -> {ok, ServerPid} | {error, Reason}</name>
+      <name since="">get_server(WindowPid) -> {ok, ServerPid} | {error, Reason}</name>
       <fsummary>Start server process with options</fsummary>
       <type>
         <v>WindowPid   = window_pid()</v>
@@ -733,7 +735,7 @@ target_spec()       = [target_spec()]
     </func>
 
     <func>
-      <name>get_target_spec(Server) -> {ok, TargetSpec} | {error, Reason}</name>
+      <name since="">get_target_spec(Server) -> {ok, TargetSpec} | {error, Reason}</name>
       <fsummary>Return a specification of the target system</fsummary>
       <type>
         <v>Server     = server()</v>
@@ -747,7 +749,7 @@ target_spec()       = [target_spec()]
     </func>
 
     <func>
-      <name>install(RelName, TargetDir) -> ok | {error, Reason}</name>
+      <name since="">install(RelName, TargetDir) -> ok | {error, Reason}</name>
       <fsummary>Install a target system</fsummary>
       <type>
         <v>RelName    = rel_name()</v>
@@ -758,7 +760,7 @@ target_spec()       = [target_spec()]
     </func>
 
     <func>
-      <name>start() -> {ok, WindowPid} | {error, Reason}</name>
+      <name since="">start() -> {ok, WindowPid} | {error, Reason}</name>
       <fsummary>Start main window process</fsummary>
       <type>
         <v>WindowPid   = window_pid()</v>
@@ -768,7 +770,7 @@ target_spec()       = [target_spec()]
     </func>
   
     <func>
-      <name>start(Options) -> {ok, WindowPid} | {error, Reason}</name>
+      <name since="">start(Options) -> {ok, WindowPid} | {error, Reason}</name>
       <fsummary>Start main window process with options</fsummary>
       <type>
         <v>Options     = options()</v>
@@ -779,7 +781,7 @@ target_spec()       = [target_spec()]
     </func>
   
     <func>
-      <name>start_link(Options) -> {ok, WindowPid} | {error, Reason}</name>
+      <name since="">start_link(Options) -> {ok, WindowPid} | {error, Reason}</name>
       <fsummary>Start main window process with options</fsummary>
       <type>
         <v>Options     = options()</v>
@@ -790,7 +792,7 @@ target_spec()       = [target_spec()]
     </func>
   
     <func>
-      <name>start_server(Options) -> {ok, ServerPid} | {error, Reason}</name>
+      <name since="">start_server(Options) -> {ok, ServerPid} | {error, Reason}</name>
       <fsummary>Start server process with options</fsummary>
       <type>
         <v>Options     = options()</v>
@@ -803,7 +805,7 @@ target_spec()       = [target_spec()]
     </func>
 
     <func>
-      <name>stop(Pid) -> ok | {error, Reason}</name>
+      <name since="">stop(Pid) -> ok | {error, Reason}</name>
       <fsummary>Stop a server or window process</fsummary>
       <type>
         <v>Pid     = server_pid() | window_pid()</v>
diff --git a/lib/reltool/doc/src/reltool_examples.xml b/lib/reltool/doc/src/reltool_examples.xml
index 2a103119e6..3888b643a2 100644
--- a/lib/reltool/doc/src/reltool_examples.xml
+++ b/lib/reltool/doc/src/reltool_examples.xml
@@ -160,7 +160,7 @@ Eshell V9.0  (abort with ^G)
                        {mod,erts_internal,[]},
                        {mod,erts_literal_area_collector,[]},
                        {mod,init,[]},
-                       {mod,otp_ring0,...},
+                       {mod,erl_init,...},
                        {mod,...},
                        {...}|...]}]},
           {app,compiler,
@@ -313,9 +313,12 @@ Erlang/OTP 20 [erts-10.0] [source-c13b302] [64-bit] [smp:4:4] [ds:4:4:10] [async
 [hipe] [kernel-poll:false]
 Eshell V10.0  (abort with ^G)
 1&gt;
-1&gt; {ok, Server} = reltool:start_server([{config, {sys, [{boot_rel, "NAME"},
-                                                        {rel, "NAME", "VSN",
-                                                        [sasl]}]}}]).
+1&gt; {ok, Server} = reltool:start_server([{config,
+                                         {sys,
+                                          [{boot_rel, "NAME"},
+                                           {rel, "NAME", "VSN",
+                                            [sasl],
+                                            [{load_dot_erlang, false}]}]}}]).
 {ok,&lt;0.1288.0&gt;}
 2&gt;
 2&gt; reltool:get_config(Server).
@@ -331,7 +334,7 @@ Eshell V10.0  (abort with ^G)
 {ok,{script,{"NAME","VSN"},
             [{preLoaded,[erl_prim_loader,erl_tracer,erlang,
                          erts_code_purger,erts_dirty_process_signal_handler,
-                         erts_internal,erts_literal_area_collector,init,otp_ring0,
+                         erts_internal,erts_literal_area_collector,init,erl_init,
                          prim_eval,prim_file,prim_inet,prim_zip,zlib]},
              {progress,preloaded},
              {path,["$ROOT/lib/kernel-5.2/ebin",
diff --git a/lib/reltool/src/reltool.hrl b/lib/reltool/src/reltool.hrl
index d133762818..892aaf8649 100644
--- a/lib/reltool/src/reltool.hrl
+++ b/lib/reltool/src/reltool.hrl
@@ -61,6 +61,7 @@
                           | {app_name(), app_type()}
                           | {app_name(), [incl_app()]}
                           | {app_name(), app_type(), [incl_app()]}.
+-type rel_opt()          :: {load_dot_erlang, boolean()}.
 -type mod()              :: {incl_cond, incl_cond()}
                           | {debug_info, debug_info()}.
 -type app()              :: {vsn, app_vsn()}
@@ -92,6 +93,8 @@
                           | {lib_dirs, [lib_dir()]}
                           | {boot_rel, boot_rel()}
                           | {rel, rel_name(), rel_vsn(), [rel_app()]}
+                          | {rel, rel_name(), rel_vsn(),
+                             [rel_app()], [rel_opt()]}
                           | {relocatable, relocatable()}
                           | {erts, app()}
                           | {escript, escript_file(), [escript()]}
diff --git a/lib/reltool/src/reltool_server.erl b/lib/reltool/src/reltool_server.erl
index af71b0cf2a..2de8000fd8 100644
--- a/lib/reltool/src/reltool_server.erl
+++ b/lib/reltool/src/reltool_server.erl
@@ -526,7 +526,7 @@ analyse(#state{sys=Sys} = S, Apps, Status) ->
     %% is included in a release (rel spec - see apps_in_rels above).
     %% Then initiate the same for each module, and check that there
     %% are no duplicated module names (in different applications)
-    %% where we can not decide which one to use.
+    %% where we cannot decide which one to use.
     %% Write all #app to app_tab and all #mod to mod_tab.
     Status2 = apps_init_is_included(S, Apps, RelApps, Status),
 
@@ -1483,6 +1483,18 @@ decode(#sys{rels = Rels} = Sys, [{rel, Name, Vsn, RelApps} | SysKeyVals])
     Rel = #rel{name = Name, vsn = Vsn, rel_apps = []},
     Rel2 = decode(Rel, RelApps),
     decode(Sys#sys{rels = [Rel2 | Rels]}, SysKeyVals);
+decode(#sys{rels = Rels} = Sys, [{rel, Name, Vsn, RelApps, Opts} | SysKeyVals])
+  when is_list(Name), is_list(Vsn), is_list(RelApps), is_list(Opts) ->
+    Rel1 = lists:foldl(fun(Opt, Rel0) ->
+        case Opt of
+            {load_dot_erlang, Value} when is_boolean(Value) ->
+                Rel0#rel{load_dot_erlang = Value};
+            _ ->
+                reltool_utils:throw_error("Illegal rel option: ~tp", [Opt])
+        end
+    end, #rel{name = Name, vsn = Vsn, rel_apps = []}, Opts),
+    Rel2 = decode(Rel1, RelApps),
+    decode(Sys#sys{rels = [Rel2 | Rels]}, SysKeyVals);
 decode(#sys{} = Sys, [{Key, Val} | KeyVals]) ->
     Sys3 =
         case Key of
diff --git a/lib/reltool/src/reltool_target.erl b/lib/reltool/src/reltool_target.erl
index 64834ecc1d..dfa62479a0 100644
--- a/lib/reltool/src/reltool_target.erl
+++ b/lib/reltool/src/reltool_target.erl
@@ -108,12 +108,8 @@ do_gen_config(#sys{root_dir          	= RootDir,
 		     emit(incl_cond, A#app.incl_cond, undefined, InclDefs)}
 		    || A <- Apps, A#app.is_escript],
     DefaultRels = reltool_utils:default_rels(),
-    RelsItems =
-	[{rel, R#rel.name, R#rel.vsn, do_gen_config(R, InclDefs)} ||
-	    R <- Rels],
-    DefaultRelsItems =
-	[{rel, R#rel.name, R#rel.vsn, do_gen_config(R, InclDefs)} ||
-	    R <- DefaultRels],
+    RelsItems = [do_gen_config(R, InclDefs) || R <- Rels],
+    DefaultRelsItems = [do_gen_config(R, InclDefs) || R <- DefaultRels],
     RelsItems2 =
 	case InclDefs of
 	    true  -> RelsItems;
@@ -201,11 +197,20 @@ do_gen_config(#mod{name = Name,
 	_ ->
 	    []
     end;
-do_gen_config(#rel{name = _Name,
-		   vsn = _Vsn,
-		   rel_apps = RelApps},
-	      InclDefs) ->
-    [do_gen_config(RA, InclDefs) || RA <- RelApps];
+do_gen_config(#rel{name = Name,
+                   vsn = Vsn,
+                   rel_apps = RelApps,
+                   load_dot_erlang = LoadDotErlang},
+              InclDefs) ->
+    RelAppsConfig = [do_gen_config(RA, InclDefs) || RA <- RelApps],
+    if
+        LoadDotErlang =:= false ->
+            {rel, Name, Vsn, RelAppsConfig, [{load_dot_erlang, false}]};
+        InclDefs =:= true ->
+            {rel, Name, Vsn, RelAppsConfig, [{load_dot_erlang, true}]};
+        LoadDotErlang =:= true ->
+            {rel, Name, Vsn, RelAppsConfig}
+    end;
 do_gen_config(#rel_app{name = Name,
 		       app_type = Type,
 		       incl_apps = InclApps},
diff --git a/lib/reltool/test/reltool_server_SUITE.erl b/lib/reltool/test/reltool_server_SUITE.erl
index 9ee61b595d..bb092e8bbf 100644
--- a/lib/reltool/test/reltool_server_SUITE.erl
+++ b/lib/reltool/test/reltool_server_SUITE.erl
@@ -102,6 +102,7 @@ all() ->
      create_release,
      create_release_sort,
      create_script,
+     create_script_without_dot_erlang,
      create_script_sort,
      create_target,
      create_target_unicode,
@@ -171,7 +172,7 @@ break(_Config) ->
 
 start_server(_Config) ->
     {ok, Pid} = ?msym({ok, _}, reltool:start_server([])),
-    Libs = lists:sort(erl_libs()),
+    Libs = reltool_test_lib:erl_libs(),
     StrippedDefault =
         case Libs of
             [] -> {sys, []};
@@ -185,7 +186,7 @@ start_server(_Config) ->
 %% Start a server process and check that it does not crash
 
 set_config(_Config) ->
-    Libs = lists:sort(erl_libs()),
+    Libs = reltool_test_lib:erl_libs(),
     Default =
         {sys,
          [
@@ -219,7 +220,15 @@ get_config(_Config) ->
     StdLibDir = filename:join(LibDir,"stdlib-"++StdVsn),
     SaslLibDir = filename:join(LibDir,"sasl-"++SaslVsn),
 
-    Sys = {sys,[{incl_cond, exclude},
+    Libs = reltool_test_lib:erl_libs(),
+    LibDirs =
+        case Libs of
+            [] -> [];
+            _ -> [{lib_dirs,Libs}]
+        end,
+
+    Sys = {sys,LibDirs ++
+               [{incl_cond, exclude},
 		{app,kernel,[{incl_cond,include}]},
 		{app,sasl,[{incl_cond,include},{vsn,SaslVsn}]},
 		{app,stdlib,[{incl_cond,include},{lib_dir,StdLibDir}]}]},
@@ -228,13 +237,27 @@ get_config(_Config) ->
     ?m({ok, Sys}, reltool:get_config(Pid,false,false)),
 
     %% Include derived info
-    ?msym({ok,{sys,[{incl_cond, exclude},
-		    {erts,[]},
-		    {app,kernel,[{incl_cond,include},{mod,_,[]}|_]},
-		    {app,sasl,[{incl_cond,include},{vsn,SaslVsn},{mod,_,[]}|_]},
-		    {app,stdlib,[{incl_cond,include},{lib_dir,StdLibDir},
-				 {mod,_,[]}|_]}]}},
-	  reltool:get_config(Pid,false,true)),
+    case Libs of
+        [] ->
+            ?msym({ok,{sys,[{incl_cond, exclude},
+                            {erts,[]},
+                            {app,kernel,[{incl_cond,include},{mod,_,[]}|_]},
+                            {app,sasl,[{incl_cond,include},{vsn,SaslVsn},
+                                       {mod,_,[]}|_]},
+                            {app,stdlib,[{incl_cond,include},{lib_dir,StdLibDir},
+                                         {mod,_,[]}|_]}]}},
+                  reltool:get_config(Pid,false,true));
+        _ ->
+            ?msym({ok,{sys,[{lib_dirs,Libs},
+                            {incl_cond, exclude},
+                            {erts,[]},
+                            {app,kernel,[{incl_cond,include},{mod,_,[]}|_]},
+                            {app,sasl,[{incl_cond,include},{vsn,SaslVsn},
+                                       {mod,_,[]}|_]},
+                            {app,stdlib,[{incl_cond,include},{lib_dir,StdLibDir},
+                                         {mod,_,[]}|_]}]}},
+                  reltool:get_config(Pid,false,true))
+    end,
 
     %% Include defaults
     ?msym({ok,{sys,[{root_dir,_},
@@ -248,9 +271,9 @@ get_config(_Config) ->
 		    {app,stdlib,[{incl_cond,include},{vsn,undefined},
 				 {lib_dir,StdLibDir}]},
 		    {boot_rel,"start_clean"},
-                    {rel,"no_dot_erlang","1.0",[]},
-		    {rel,"start_clean","1.0",[]},
-		    {rel,"start_sasl","1.0",[sasl]},
+                    {rel,"no_dot_erlang","1.0",[],[{load_dot_erlang,false}]},
+		    {rel,"start_clean","1.0",[],[{load_dot_erlang,true}]},
+		    {rel,"start_sasl","1.0",[sasl],[{load_dot_erlang,true}]},
 		    {emu_name,"beam"},
 		    {relocatable,true},
 		    {profile,development},
@@ -279,9 +302,9 @@ get_config(_Config) ->
 		    {app,stdlib,[{incl_cond,include},{vsn,StdVsn},
 				 {lib_dir,StdLibDir},{mod,_,[]}|_]},
 		    {boot_rel,"start_clean"},
-                    {rel,"no_dot_erlang","1.0",[]},
-		    {rel,"start_clean","1.0",[]},
-		    {rel,"start_sasl","1.0",[sasl]},
+                    {rel,"no_dot_erlang","1.0",[],[{load_dot_erlang,false}]},
+		    {rel,"start_clean","1.0",[],[{load_dot_erlang,true}]},
+		    {rel,"start_sasl","1.0",[sasl],[{load_dot_erlang,true}]},
 		    {emu_name,"beam"},
 		    {relocatable,true},
 		    {profile,development},
@@ -305,11 +328,11 @@ get_config(_Config) ->
 %% OTP-9135, test that app_file option can be set to all | keep | strip
 
 otp_9135(_Config) ->
-    Libs = lists:sort(erl_libs()),
+    Libs = reltool_test_lib:erl_libs(),
     StrippedDefaultSys = 
         case Libs of
             [] -> [];
-            _  -> {lib_dirs, Libs}
+            _  -> [{lib_dirs, Libs}]
         end,
     
     Config1 = {sys,[{app_file, keep}]}, % this is the default
@@ -549,6 +572,32 @@ create_script(_Config) ->
     
     ?m(equal, diff_script(OrigScript, Script)),
 
+    %% A release defaults to load_dot_erlang == true
+    {script, {RelName, RelVsn}, ScriptInstructions} = Script,
+    ?m(true, lists:member({apply,{c,erlangrc,[]}}, ScriptInstructions)),
+
+    %% Stop server
+    ?m(ok, reltool:stop(Pid)),
+    ok.
+
+create_script_without_dot_erlang(_Config) ->
+    %% Configure the server
+    RelName = "Just testing",
+    RelVsn = "1.0",
+    Config =
+        {sys,
+         [
+          {lib_dirs, []},
+          {boot_rel, RelName},
+          {rel, RelName, RelVsn, [stdlib, kernel], [{load_dot_erlang, false}]}
+         ]},
+    {ok, Pid} = ?msym({ok, _}, reltool:start_server([{config, Config}])),
+
+    %% Confirm that load_dot_erlang == false was used
+    {ok, Script} = ?msym({ok, _}, reltool:get_script(Pid, RelName)),
+    {script, {RelName, RelVsn}, ScriptInstructions} = Script,
+    ?m(false, lists:member({apply,{c,erlangrc,[]}}, ScriptInstructions)),
+
     %% Stop server
     ?m(ok, reltool:stop(Pid)),
     ok.
@@ -1039,7 +1088,7 @@ create_standalone_app(Config) ->
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %% Generate standalone system with inlined archived application
-%% Check that the inlined app can not be explicitly configured
+%% Check that the inlined app cannot be explicitly configured
 
 create_standalone_app_clash(Config) ->
     %% Create archive
@@ -1659,7 +1708,7 @@ set_apps_inlined(Config) ->
     ?m(true, Someapp1#app.is_included),
     ?m(true, Someapp1#app.is_pre_included),
 
-    %% Check that inlined app can not be configured
+    %% Check that inlined app cannot be configured
     Someapp2 = Someapp1#app{incl_cond=exclude},
     ?msym({error,
 	   "Application someapp is inlined in '*escript* someapp'. "
@@ -1719,13 +1768,19 @@ set_sys_and_undo(Config) ->
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 load_config_and_undo(Config) ->
-    Sys1 = {sys,[{incl_cond, exclude},
-		 {app,kernel,[{incl_cond,include}]},
-		 {app,sasl,[{incl_cond,include}]},
-		 {app,stdlib,[{incl_cond,include}]},
-		 {app,tools,[{incl_cond,include}]}]},
+    Sys1 = {sys,Cfg1=[{incl_cond, exclude},
+                      {app,kernel,[{incl_cond,include}]},
+                      {app,sasl,[{incl_cond,include}]},
+                      {app,stdlib,[{incl_cond,include}]},
+                      {app,tools,[{incl_cond,include}]}]},
     {ok, Pid} = ?msym({ok, _}, reltool:start_server([{config, Sys1}])),
-    ?m({ok, Sys1}, reltool:get_config(Pid)),
+    Libs = reltool_test_lib:erl_libs(),
+    Sys11 =
+        case Libs of
+            [] -> Sys1;
+            _  -> {sys, [{lib_dirs, Libs}|Cfg1]}
+        end,
+    ?m({ok, Sys11}, reltool:get_config(Pid)),
     ?m({ok,[]}, reltool_server:get_status(Pid)),
 
     %% Get app and mod
@@ -1780,13 +1835,19 @@ load_config_and_undo(Config) ->
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %% Test that load_config is properly rolled back if it fails
 load_config_fail(_Config) ->
-    Sys1 = {sys,[{incl_cond, exclude},
-		 {app,kernel,[{incl_cond,include}]},
-		 {app,sasl,[{incl_cond,include}]},
-		 {app,stdlib,[{incl_cond,include}]},
-		 {app,tools,[{incl_cond,include}]}]},
+    Sys1 = {sys,Cfg1=[{incl_cond, exclude},
+                      {app,kernel,[{incl_cond,include}]},
+                      {app,sasl,[{incl_cond,include}]},
+                      {app,stdlib,[{incl_cond,include}]},
+                      {app,tools,[{incl_cond,include}]}]},
     {ok, Pid} = ?msym({ok, _}, reltool:start_server([{config, Sys1}])),
-    ?m({ok, Sys1}, reltool:get_config(Pid)),
+    Libs = reltool_test_lib:erl_libs(),
+    Sys11 =
+        case Libs of
+            [] -> Sys1;
+            _  -> {sys, [{lib_dirs, Libs}|Cfg1]}
+        end,
+    ?m({ok, Sys11}, reltool:get_config(Pid)),
     ?m({ok,[]}, reltool_server:get_status(Pid)),
 
     %% Get app and mod
@@ -1804,7 +1865,7 @@ load_config_fail(_Config) ->
 	  reltool_server:load_config(Pid,Sys2)),
 
     %% Check that a rollback is done to the old configuration
-    ?m({ok, Sys1}, reltool:get_config(Pid,false,false)),
+    ?m({ok, Sys11}, reltool:get_config(Pid,false,false)),
 
     %% and that tools is not changed (i.e. that the new configuration
     %% is not applied)
@@ -2074,25 +2135,42 @@ gen_rel_files(_Config) ->
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 save_config(Config) ->
     PrivDir = ?config(priv_dir,Config),
-    Sys = {sys,[{incl_cond, exclude},
-		{app,kernel,[{incl_cond,include}]},
-		{app,sasl,[{incl_cond,include}]},
-		{app,stdlib,[{incl_cond,include}]}]},
+    Sys = {sys,Cfg=[{incl_cond, exclude},
+                    {app,kernel,[{incl_cond,include}]},
+                    {app,sasl,[{incl_cond,include}]},
+                    {app,stdlib,[{incl_cond,include}]}]},
     {ok, Pid} = ?msym({ok, _}, reltool:start_server([{config, Sys}])),
-    ?m({ok, Sys}, reltool:get_config(Pid)),
+    Libs = reltool_test_lib:erl_libs(),
+    Sys1 =
+        case Libs of
+            [] -> Sys;
+            _  -> {sys, [{lib_dirs, Libs}|Cfg]}
+        end,
+    ?m({ok, Sys1}, reltool:get_config(Pid)),
 
     Simple = filename:join(PrivDir,"save_simple.reltool"),
     ?m(ok, reltool_server:save_config(Pid,Simple,false,false)),
-    ?m({ok,[Sys]}, file:consult(Simple)),
+    ?m({ok,[Sys1]}, file:consult(Simple)),
 
     Derivates = filename:join(PrivDir,"save_derivates.reltool"),
     ?m(ok, reltool_server:save_config(Pid,Derivates,false,true)),
-    ?msym({ok,[{sys,[{incl_cond, exclude},
-		     {erts,[]},
-		     {app,kernel,[{incl_cond,include},{mod,_,[]}|_]},
-		     {app,sasl,[{incl_cond,include},{mod,_,[]}|_]},
-		     {app,stdlib,[{incl_cond,include},{mod,_,[]}|_]}]}]},
-	  file:consult(Derivates)),
+    case Libs of
+        [] ->
+            ?msym({ok,[{sys,[{incl_cond, exclude},
+                             {erts,[]},
+                             {app,kernel,[{incl_cond,include},{mod,_,[]}|_]},
+                             {app,sasl,[{incl_cond,include},{mod,_,[]}|_]},
+                             {app,stdlib,[{incl_cond,include},{mod,_,[]}|_]}]}]},
+                  file:consult(Derivates));
+        _ ->
+            ?msym({ok,[{sys,[{lib_dirs,Libs},
+                             {incl_cond, exclude},
+                             {erts,[]},
+                             {app,kernel,[{incl_cond,include},{mod,_,[]}|_]},
+                             {app,sasl,[{incl_cond,include},{mod,_,[]}|_]},
+                             {app,stdlib,[{incl_cond,include},{mod,_,[]}|_]}]}]},
+                  file:consult(Derivates))
+    end,
 
     Defaults = filename:join(PrivDir,"save_defaults.reltool"),
     ?m(ok, reltool_server:save_config(Pid,Defaults,true,false)),
@@ -2107,9 +2185,9 @@ save_config(Config) ->
 		     {app,stdlib,[{incl_cond,include},{vsn,undefined},
 				  {lib_dir,undefined}]},
 		     {boot_rel,"start_clean"},
-                     {rel,"no_dot_erlang","1.0",[]},
-		     {rel,"start_clean","1.0",[]},
-		     {rel,"start_sasl","1.0",[sasl]},
+                     {rel,"no_dot_erlang","1.0",[],[{load_dot_erlang,false}]},
+		     {rel,"start_clean","1.0",[],[{load_dot_erlang,true}]},
+		     {rel,"start_sasl","1.0",[sasl],[{load_dot_erlang,true}]},
 		     {emu_name,"beam"},
 		     {relocatable,true},
 		     {profile,development},
@@ -2148,9 +2226,9 @@ save_config(Config) ->
 		     {app,stdlib,[{incl_cond,include},{vsn,StdVsn},
 				  {lib_dir,StdLibDir},{mod,_,[]}|_]},
 		     {boot_rel,"start_clean"},
-                     {rel,"no_dot_erlang","1.0",[]},
-		     {rel,"start_clean","1.0",[]},
-		     {rel,"start_sasl","1.0",[sasl]},
+                     {rel,"no_dot_erlang","1.0",[],[{load_dot_erlang,false}]},
+		     {rel,"start_clean","1.0",[],[{load_dot_erlang,true}]},
+		     {rel,"start_sasl","1.0",[sasl],[{load_dot_erlang,true}]},
 		     {emu_name,"beam"},
 		     {relocatable,true},
 		     {profile,development},
@@ -2560,9 +2638,6 @@ windows_erl_libs(_Config) ->
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %% Library functions
 
-erl_libs() ->
-    reltool_utils:erl_libs().
-
 datadir(Config) ->
     %% Removes the trailing slash...
     filename:nativename(?config(data_dir,Config)).
diff --git a/lib/reltool/test/reltool_test_lib.erl b/lib/reltool/test/reltool_test_lib.erl
index be48ea4726..033d952d0a 100644
--- a/lib/reltool/test/reltool_test_lib.erl
+++ b/lib/reltool/test/reltool_test_lib.erl
@@ -237,7 +237,8 @@ wait_for_close() ->
 	    wait_for_close()
     end.
 
-
+erl_libs() ->
+    lists:sort([filename:absname(P) || P<-reltool_utils:erl_libs()]).
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %% A small test server, which can be run standalone in a shell
diff --git a/lib/reltool/test/reltool_wx_SUITE.erl b/lib/reltool/test/reltool_wx_SUITE.erl
index f6f7721762..983c8f6c52 100644
--- a/lib/reltool/test/reltool_wx_SUITE.erl
+++ b/lib/reltool/test/reltool_wx_SUITE.erl
@@ -74,7 +74,12 @@ start_all_windows(_Config) ->
     %% Test that server pid can be fetched, and that server is alive
     {ok, Server} = ?msym({ok,_}, reltool:get_server(SysPid)),
     ?m(true, erlang:is_process_alive(Server)),
-    ?m({ok,{sys,[]}}, reltool:get_config(Server)),
+    Sys =
+        case reltool_test_lib:erl_libs() of
+            [] -> [];
+            Libs -> [{lib_dirs,Libs}]
+        end,
+    ?m({ok,{sys,Sys}}, reltool:get_config(Server)),
 
     %% Terminate
     check_no_win_crash(),
diff --git a/lib/runtime_tools/c_src/Makefile.in b/lib/runtime_tools/c_src/Makefile.in
index 4530a83aee..75b3a98d56 100644
--- a/lib/runtime_tools/c_src/Makefile.in
+++ b/lib/runtime_tools/c_src/Makefile.in
@@ -36,7 +36,7 @@ CC = $(DED_CC)
 CFLAGS = $(DED_CFLAGS) -I./
 LD = $(DED_LD)
 SHELL = /bin/sh
-LIBS = $(DED_LIBS)
+LIBS = $(DED_LIBS) @LIBS@
 LDFLAGS += $(DED_LDFLAGS)
 
 TRACE_LIBNAME = dyntrace trace_file_drv trace_ip_drv
@@ -58,7 +58,7 @@ TYPE_FLAGS = $(CFLAGS)
 endif
 endif
 
-ALL_CFLAGS = @DEFS@ $(TYPE_FLAGS) $(TRACE_DRV_INCLUDES) \
+ALL_CFLAGS = @DEFS@ @ERTS_CONFIG_H_IDIR@ $(TYPE_FLAGS) $(TRACE_DRV_INCLUDES) \
 	-I$(OBJDIR) -I$(ERL_TOP)/erts/emulator/$(TARGET)
 
 ROOTDIR = $(ERL_TOP)/lib
@@ -75,7 +75,7 @@ RELSYSDIR = $(RELEASE_PATH)/lib/runtime_tools-$(VSN)
 # Misc Macros
 # ----------------------------------------------------
 
-TRACE_LIBS = $(foreach LIB, $(TRACE_LIBNAME), $(LIBDIR)/$(LIB)$(TYPEMARKER).@DED_EXT@)
+TRACE_LIBS = $(foreach LIB, $(TRACE_LIBNAME), $(LIBDIR)/$(LIB)$(TYPEMARKER).$(DED_EXT))
 
 # ----------------------------------------------------
 # Targets
@@ -94,7 +94,7 @@ $(LIBDIR):
 $(OBJDIR)/%$(TYPEMARKER).o: %.c dyntrace_lttng.h
 	$(V_CC) -c -o $@ $(ALL_CFLAGS) $<
 
-$(LIBDIR)/%$(TYPEMARKER).@DED_EXT@: $(OBJDIR)/%$(TYPEMARKER).o
+$(LIBDIR)/%$(TYPEMARKER).$(DED_EXT): $(OBJDIR)/%$(TYPEMARKER).o
 	$(V_LD) $(LDFLAGS) -o $@ $^ $(LIBS)
 
 clean:
diff --git a/lib/runtime_tools/doc/src/dbg.xml b/lib/runtime_tools/doc/src/dbg.xml
index 3262cafefc..e15fc3efe6 100644
--- a/lib/runtime_tools/doc/src/dbg.xml
+++ b/lib/runtime_tools/doc/src/dbg.xml
@@ -32,7 +32,7 @@
     <rev>A</rev>
     <file>dbg.sgml</file>
   </header>
-  <module>dbg</module>
+  <module since="">dbg</module>
   <modulesummary>The Text Based Trace Facility</modulesummary>
   <description>
     <p>This module implements a text based interface to the
@@ -68,7 +68,7 @@
   </description>
   <funcs>
     <func>
-      <name>fun2ms(LiteralFun) -> MatchSpec</name>
+      <name since="">fun2ms(LiteralFun) -> MatchSpec</name>
       <fsummary>Pseudo function that transforms fun syntax to match_spec.</fsummary>
       <type>
         <v>LiteralFun = fun() literal</v>
@@ -113,7 +113,7 @@
         <p>The imported variables will be replaced by match_spec
           <c>const</c> expressions, which is consistent with the
           static scoping for Erlang <c>fun()</c>s. Local or global
-          function calls can not be in the guard or body of the fun
+          function calls cannot be in the guard or body of the fun
           however. Calls to builtin match_spec functions of course is
           allowed:</p>
         <pre>
@@ -145,14 +145,14 @@ Error: fun containing local erlang function calls ('is_atomm' called in guard)\
       </desc>
     </func>
     <func>
-      <name>h() -> ok </name>
+      <name since="">h() -> ok </name>
       <fsummary>Give a list of available help items on standard output.</fsummary>
       <desc>
         <p>Gives a list of items for brief online help.</p>
       </desc>
     </func>
     <func>
-      <name>h(Item) -> ok </name>
+      <name since="">h(Item) -> ok </name>
       <fsummary>Give brief help for an item.</fsummary>
       <type>
         <v>Item = atom()</v>
@@ -163,14 +163,14 @@ Error: fun containing local erlang function calls ('is_atomm' called in guard)\
       </desc>
     </func>
     <func>
-      <name>p(Item) -> {ok, MatchDesc} | {error, term()} </name>
+      <name since="">p(Item) -> {ok, MatchDesc} | {error, term()} </name>
       <fsummary>Trace messages to and from Item.</fsummary>
       <desc>
         <p>Equivalent to <c>p(Item, [m])</c>.</p>
       </desc>
     </func>
     <func>
-      <name>p(Item, Flags) -> {ok, MatchDesc} | {error, term()}</name>
+      <name since="">p(Item, Flags) -> {ok, MatchDesc} | {error, term()}</name>
       <fsummary>Trace Item according to Flags.</fsummary>
       <type>
         <v>MatchDesc = [MatchNum]</v>
@@ -303,14 +303,14 @@ Error: fun containing local erlang function calls ('is_atomm' called in guard)\
       </desc>
     </func>
     <func>
-      <name>c(Mod, Fun, Args)</name>
+      <name since="">c(Mod, Fun, Args)</name>
       <fsummary>Evaluate <c>apply(M,F,Args)</c>with <c>all</c>trace flags set.</fsummary>
       <desc>
         <p>Equivalent to <c>c(Mod, Fun, Args, all)</c>.</p>
       </desc>
     </func>
     <func>
-      <name>c(Mod, Fun, Args, Flags)</name>
+      <name since="">c(Mod, Fun, Args, Flags)</name>
       <fsummary>Evaluate <c>apply(M,F,Args)</c>with <c>Flags</c>trace flags set.</fsummary>
       <desc>
         <p>Evaluates the expression <c>apply(Mod, Fun, Args)</c> with the trace
@@ -319,35 +319,35 @@ Error: fun containing local erlang function calls ('is_atomm' called in guard)\
       </desc>
     </func>
     <func>
-      <name>i() -> ok</name>
+      <name since="">i() -> ok</name>
       <fsummary>Display information about all traced processes and ports.</fsummary>
       <desc>
         <p>Displays information about all traced processes and ports.</p>
       </desc>
     </func>
     <func>
-      <name>tp(Module,MatchSpec)</name>
+      <name since="">tp(Module,MatchSpec)</name>
       <fsummary>Set pattern for traced global function calls</fsummary>
       <desc>
         <p>Same as tp({Module, '_', '_'}, MatchSpec)</p>
       </desc>
     </func>
     <func>
-      <name>tp(Module,Function,MatchSpec)</name>
+      <name since="">tp(Module,Function,MatchSpec)</name>
       <fsummary>Set pattern for traced global function calls</fsummary>
       <desc>
         <p>Same as tp({Module, Function, '_'}, MatchSpec)</p>
       </desc>
     </func>
     <func>
-      <name>tp(Module, Function, Arity, MatchSpec)</name>
+      <name since="">tp(Module, Function, Arity, MatchSpec)</name>
       <fsummary>Set pattern for traced global function calls</fsummary>
       <desc>
         <p>Same as tp({Module, Function, Arity}, MatchSpec)</p>
       </desc>
     </func>
     <func>
-      <name>tp({Module, Function, Arity}, MatchSpec) -> {ok, MatchDesc} | {error, term()}</name>
+      <name since="">tp({Module, Function, Arity}, MatchSpec) -> {ok, MatchDesc} | {error, term()}</name>
       <fsummary>Set pattern for traced global function calls</fsummary>
       <type>
         <v>Module = atom() | '_'</v>
@@ -410,28 +410,28 @@ Error: fun containing local erlang function calls ('is_atomm' called in guard)\
       </desc>
     </func>
     <func>
-      <name>tpl(Module,MatchSpec)</name>
+      <name since="">tpl(Module,MatchSpec)</name>
       <fsummary>Set pattern for traced local (as well as global) function calls</fsummary>
       <desc>
         <p>Same as tpl({Module, '_', '_'}, MatchSpec)</p>
       </desc>
     </func>
     <func>
-      <name>tpl(Module,Function,MatchSpec)</name>
+      <name since="">tpl(Module,Function,MatchSpec)</name>
       <fsummary>Set pattern for traced local (as well as global) function calls</fsummary>
       <desc>
         <p>Same as tpl({Module, Function, '_'}, MatchSpec)</p>
       </desc>
     </func>
     <func>
-      <name>tpl(Module, Function, Arity, MatchSpec)</name>
+      <name since="">tpl(Module, Function, Arity, MatchSpec)</name>
       <fsummary>Set pattern for traced local (as well as global) function calls</fsummary>
       <desc>
         <p>Same as tpl({Module, Function, Arity}, MatchSpec)</p>
       </desc>
     </func>
     <func>
-      <name>tpl({Module, Function, Arity}, MatchSpec) -> {ok, MatchDesc} | {error, term()}</name>
+      <name since="">tpl({Module, Function, Arity}, MatchSpec) -> {ok, MatchDesc} | {error, term()}</name>
       <fsummary>Set pattern for traced local (as well as global) function calls</fsummary>
       <desc>
           <p>This function works as <seealso marker="#tp-2"><c>tp/2</c></seealso>, but enables
@@ -442,7 +442,7 @@ Error: fun containing local erlang function calls ('is_atomm' called in guard)\
 
 
     <func>
-      <name>tpe(Event, MatchSpec) -> {ok, MatchDesc} | {error, term()}</name>
+      <name since="OTP 19.0">tpe(Event, MatchSpec) -> {ok, MatchDesc} | {error, term()}</name>
       <fsummary>Set pattern for traced event</fsummary>
       <type>
 	<v>Event = send | 'receive'</v>
@@ -484,35 +484,35 @@ Error: fun containing local erlang function calls ('is_atomm' called in guard)\
       </desc>
     </func>
     <func>
-      <name>ctp()</name>
+      <name since="">ctp()</name>
       <fsummary>Clear call trace pattern for the specified functions</fsummary>
       <desc>
         <p>Same as ctp({'_', '_', '_'})</p>
       </desc>
     </func>
     <func>
-      <name>ctp(Module)</name>
+      <name since="">ctp(Module)</name>
       <fsummary>Clear call trace pattern for the specified functions</fsummary>
       <desc>
         <p>Same as ctp({Module, '_', '_'})</p>
       </desc>
     </func>
     <func>
-      <name>ctp(Module, Function)</name>
+      <name since="">ctp(Module, Function)</name>
       <fsummary>Clear call trace pattern for the specified functions</fsummary>
       <desc>
         <p>Same as ctp({Module, Function, '_'})</p>
       </desc>
     </func>
     <func>
-      <name>ctp(Module, Function, Arity)</name>
+      <name since="">ctp(Module, Function, Arity)</name>
       <fsummary>Clear call trace pattern for the specified functions</fsummary>
       <desc>
         <p>Same as ctp({Module, Function, Arity})</p>
       </desc>
     </func>
     <func>
-      <name>ctp({Module, Function, Arity}) -> {ok, MatchDesc} | {error, term()}</name>
+      <name since="">ctp({Module, Function, Arity}) -> {ok, MatchDesc} | {error, term()}</name>
       <fsummary>Clear call trace pattern for the specified functions</fsummary>
       <type>
         <v>Module = atom() | '_'</v>
@@ -533,35 +533,35 @@ Error: fun containing local erlang function calls ('is_atomm' called in guard)\
       </desc>
     </func>
     <func>
-      <name>ctpl()</name>
+      <name since="">ctpl()</name>
       <fsummary>Clear call trace pattern for the specified functions</fsummary>
       <desc>
         <p>Same as ctpl({'_', '_', '_'})</p>
       </desc>
     </func>
     <func>
-      <name>ctpl(Module)</name>
+      <name since="">ctpl(Module)</name>
       <fsummary>Clear call trace pattern for the specified functions</fsummary>
       <desc>
         <p>Same as ctpl({Module, '_', '_'})</p>
       </desc>
     </func>
     <func>
-      <name>ctpl(Module, Function)</name>
+      <name since="">ctpl(Module, Function)</name>
       <fsummary>Clear call trace pattern for the specified functions</fsummary>
       <desc>
         <p>Same as ctpl({Module, Function, '_'})</p>
       </desc>
     </func>
     <func>
-      <name>ctpl(Module, Function, Arity)</name>
+      <name since="">ctpl(Module, Function, Arity)</name>
       <fsummary>Clear call trace pattern for the specified functions</fsummary>
       <desc>
         <p>Same as ctpl({Module, Function, Arity})</p>
       </desc>
     </func>
     <func>
-      <name>ctpl({Module, Function, Arity}) -> {ok, MatchDesc} | {error, term()}</name>
+      <name since="">ctpl({Module, Function, Arity}) -> {ok, MatchDesc} | {error, term()}</name>
       <fsummary>Clear call trace pattern for the specified functions</fsummary>
       <desc>
           <p>This function works as <seealso marker="#ctp-1"><c>ctp/1</c></seealso>, but only disables
@@ -570,35 +570,35 @@ Error: fun containing local erlang function calls ('is_atomm' called in guard)\
       </desc>
     </func>
     <func>
-      <name>ctpg()</name>
+      <name since="">ctpg()</name>
       <fsummary>Clear call trace pattern for the specified functions</fsummary>
       <desc>
         <p>Same as ctpg({'_', '_', '_'})</p>
       </desc>
     </func>
     <func>
-      <name>ctpg(Module)</name>
+      <name since="">ctpg(Module)</name>
       <fsummary>Clear call trace pattern for the specified functions</fsummary>
       <desc>
         <p>Same as ctpg({Module, '_', '_'})</p>
       </desc>
     </func>
     <func>
-      <name>ctpg(Module, Function)</name>
+      <name since="">ctpg(Module, Function)</name>
       <fsummary>>Clear call trace pattern for the specified functions</fsummary>
       <desc>
         <p>Same as ctpg({Module, Function, '_'})</p>
       </desc>
     </func>
     <func>
-      <name>ctpg(Module, Function, Arity)</name>
+      <name since="">ctpg(Module, Function, Arity)</name>
       <fsummary>>Clear call trace pattern for the specified functions</fsummary>
       <desc>
         <p>Same as ctpg({Module, Function, Arity})</p>
       </desc>
     </func>
     <func>
-      <name>ctpg({Module, Function, Arity}) -> {ok, MatchDesc} | {error, term()}</name>
+      <name since="">ctpg({Module, Function, Arity}) -> {ok, MatchDesc} | {error, term()}</name>
       <fsummary>Clear call trace pattern for the specified functions</fsummary>
       <desc>
           <p>This function works as <seealso marker="#ctp-1"><c>ctp/1</c></seealso>, but only disables
@@ -607,7 +607,7 @@ Error: fun containing local erlang function calls ('is_atomm' called in guard)\
       </desc>
     </func>
     <func>
-      <name>ctpe(Event) -> {ok, MatchDesc} | {error, term()}</name>
+      <name since="OTP 19.0">ctpe(Event) -> {ok, MatchDesc} | {error, term()}</name>
       <fsummary>Clear trace pattern for the specified event</fsummary>
       <type>
         <v>Event = send | 'receive'</v>
@@ -623,7 +623,7 @@ Error: fun containing local erlang function calls ('is_atomm' called in guard)\
       </desc>
     </func>
     <func>
-      <name>ltp() -> ok</name>
+      <name since="">ltp() -> ok</name>
       <fsummary>List saved and built-in match specifications on the console.</fsummary>
       <desc>
         <p>Use this function to recall all match specifications previously
@@ -654,7 +654,7 @@ Error: fun containing local erlang function calls ('is_atomm' called in guard)\
       </desc>
     </func>
     <func>
-      <name>dtp() -> ok</name>
+      <name since="">dtp() -> ok</name>
       <fsummary>Delete all saved match specifications.</fsummary>
       <desc>
         <p>Use this function to "forget" all match specifications
@@ -665,7 +665,7 @@ Error: fun containing local erlang function calls ('is_atomm' called in guard)\
       </desc>
     </func>
     <func>
-      <name>dtp(N) -> ok</name>
+      <name since="">dtp(N) -> ok</name>
       <fsummary>Delete a specific saved match_spec.</fsummary>
       <type>
         <v>N = integer()</v>
@@ -676,7 +676,7 @@ Error: fun containing local erlang function calls ('is_atomm' called in guard)\
       </desc>
     </func>
     <func>
-      <name>wtp(Name) -> ok | {error, IOError}</name>
+      <name since="">wtp(Name) -> ok | {error, IOError}</name>
       <fsummary>Write all saved and built-in match specifications to a file</fsummary>
       <type>
         <v>Name = string()</v>
@@ -699,7 +699,7 @@ Error: fun containing local erlang function calls ('is_atomm' called in guard)\
       </desc>
     </func>
     <func>
-      <name>rtp(Name) -> ok | {error, Error}</name>
+      <name since="">rtp(Name) -> ok | {error, Error}</name>
       <fsummary>Read saved match specifications from file.</fsummary>
       <type>
         <v>Name = string()</v>
@@ -728,7 +728,7 @@ Error: fun containing local erlang function calls ('is_atomm' called in guard)\
       </desc>
     </func>
     <func>
-      <name>n(Nodename) -> {ok, Nodename} | {error, Reason}</name>
+      <name since="">n(Nodename) -> {ok, Nodename} | {error, Reason}</name>
       <fsummary>Add a remote node to the list of traced nodes</fsummary>
       <type>
         <v>Nodename = atom()</v>
@@ -756,7 +756,7 @@ Error: fun containing local erlang function calls ('is_atomm' called in guard)\
           <c>cant_add_local_node</c> is returned.
           </p>
         <p>If a trace port (see <seealso marker="#trace_port-2"><c>trace_port/2</c></seealso>) is
-          running on the local node, remote nodes can not be traced with
+          running on the local node, remote nodes cannot be traced with
           a tracer process. The error reason
           <c>cant_trace_remote_pid_to_local_port</c> is returned. A
           trace port can however be started on the remote node with the
@@ -767,7 +767,7 @@ Error: fun containing local erlang function calls ('is_atomm' called in guard)\
       </desc>
     </func>
     <func>
-      <name>cn(Nodename) -> ok</name>
+      <name since="">cn(Nodename) -> ok</name>
       <fsummary>Clear a node from the list of traced nodes.</fsummary>
       <type>
         <v>Nodename = atom()</v>
@@ -782,14 +782,14 @@ Error: fun containing local erlang function calls ('is_atomm' called in guard)\
       </desc>
     </func>
     <func>
-      <name>ln() -> ok</name>
+      <name since="">ln() -> ok</name>
       <fsummary>Show the list of traced nodes on the console.</fsummary>
       <desc>
         <p>Shows the list of traced nodes on the console.</p>
       </desc>
     </func>
     <func>
-      <name>tracer() -> {ok, pid()} | {error, already_started}</name>
+      <name since="">tracer() -> {ok, pid()} | {error, already_started}</name>
       <fsummary>Start a tracer server that handles trace messages.</fsummary>
       <desc>
         <p>This function starts a server on the local node that will
@@ -805,7 +805,7 @@ Error: fun containing local erlang function calls ('is_atomm' called in guard)\
       </desc>
     </func>
     <func>
-      <name>tracer(Type, Data) -> {ok, pid()} | {error, Error}</name>
+      <name since="">tracer(Type, Data) -> {ok, pid()} | {error, Error}</name>
       <fsummary>Start a tracer server with additional parameters</fsummary>
       <type>
         <v>Type = port | process | module</v>
@@ -859,7 +859,7 @@ Error: fun containing local erlang function calls ('is_atomm' called in guard)\
       </desc>
     </func>
     <func>
-      <name>tracer(Nodename, Type, Data) -> {ok, Nodename} | {error, Reason}</name>
+      <name since="">tracer(Nodename, Type, Data) -> {ok, Nodename} | {error, Reason}</name>
       <fsummary>Start a tracer server on given node with additional parameters</fsummary>
       <type>
         <v>Nodename = atom()</v>
@@ -881,7 +881,7 @@ Error: fun containing local erlang function calls ('is_atomm' called in guard)\
       </desc>
     </func>
     <func>
-      <name>trace_port(Type, Parameters) -> fun()</name>
+      <name since="">trace_port(Type, Parameters) -> fun()</name>
       <fsummary>Create and returns a trace port generating<em>fun</em></fsummary>
       <type>
         <v>Type = ip | file</v>
@@ -958,28 +958,28 @@ Error: fun containing local erlang function calls ('is_atomm' called in guard)\
       </desc>
     </func>
     <func>
-      <name>flush_trace_port()</name>
+      <name since="">flush_trace_port()</name>
       <fsummary>Equivalent to flush_trace_port(node()).</fsummary>
       <desc>
         <p>Equivalent to <c>flush_trace_port(node())</c>.</p>
       </desc>
     </func>
     <func>
-      <name>flush_trace_port(Nodename) -> ok | {error, Reason}</name>
+      <name since="">flush_trace_port(Nodename) -> ok | {error, Reason}</name>
       <fsummary>Flush internal data buffers in a trace driver on the given node.</fsummary>
       <desc>
         <p>Equivalent to <c>trace_port_control(Nodename,flush)</c>.</p>
       </desc>
     </func>
     <func>
-      <name>trace_port_control(Operation)</name>
+      <name since="">trace_port_control(Operation)</name>
       <fsummary>Equivalent to trace_port_control(node(),Operation).</fsummary>
       <desc>
         <p>Equivalent to <c>trace_port_control(node(),Operation)</c>.</p>
       </desc>
     </func>
     <func>
-      <name>trace_port_control(Nodename,Operation) ->  ok | {ok, Result} | {error, Reason}</name>
+      <name since="">trace_port_control(Nodename,Operation) ->  ok | {ok, Result} | {error, Reason}</name>
       <fsummary>Perform a control operation on the active trace port driver on the given node.</fsummary>
       <type>
         <v>Nodename = atom()</v>
@@ -1013,7 +1013,7 @@ Error: fun containing local erlang function calls ('is_atomm' called in guard)\
       </desc>
     </func>
     <func>
-      <name>trace_client(Type, Parameters) -> pid()</name>
+      <name since="">trace_client(Type, Parameters) -> pid()</name>
       <fsummary>Start a trace client that reads messages created by a trace port driver</fsummary>
       <type>
         <v>Type = ip | file | follow_file</v>
@@ -1080,7 +1080,7 @@ hello</pre>
       </desc>
     </func>
     <func>
-      <name>trace_client(Type, Parameters, HandlerSpec) -> pid()</name>
+      <name since="">trace_client(Type, Parameters, HandlerSpec) -> pid()</name>
       <fsummary>Start a trace client that reads messages created by a trace port driver, with a user defined handler</fsummary>
       <type>
         <v>Type = ip | file | follow_file</v>
@@ -1110,7 +1110,7 @@ hello</pre>
       </desc>
     </func>
     <func>
-      <name>stop_trace_client(Pid) -> ok</name>
+      <name since="">stop_trace_client(Pid) -> ok</name>
       <fsummary>Stop a trace client gracefully.</fsummary>
       <type>
         <v>Pid = pid()</v>
@@ -1123,14 +1123,14 @@ hello</pre>
       </desc>
     </func>
     <func>
-      <name>get_tracer()</name>
+      <name since="">get_tracer()</name>
       <fsummary>Equivalent to get_tracer(node()).</fsummary>
       <desc>
         <p>Equivalent to <c>get_tracer(node())</c>.</p>
       </desc>
     </func>
     <func>
-      <name>get_tracer(Nodename) -> {ok, Tracer}</name>
+      <name since="">get_tracer(Nodename) -> {ok, Tracer}</name>
       <fsummary>Return the process or port to which all trace messages are sent.</fsummary>
       <type>
         <v>Nodename = atom()</v>
@@ -1142,7 +1142,7 @@ hello</pre>
       </desc>
     </func>
     <func>
-      <name>stop() -> ok</name>
+      <name since="">stop() -> ok</name>
       <fsummary>Stop the <c>dbg</c>server and the tracing of all processes.</fsummary>
       <desc>
         <p>Stops the <c>dbg</c> server and clears all trace flags for
@@ -1153,7 +1153,7 @@ hello</pre>
       </desc>
     </func>
     <func>
-      <name>stop_clear() -> ok</name>
+      <name since="">stop_clear() -> ok</name>
       <fsummary>Stop the <c>dbg</c>server and the tracing of all processes, and clears trace patterns.</fsummary>
       <desc>
         <p>Same as stop/0, but also clears all trace patterns on global functions calls.</p>
diff --git a/lib/runtime_tools/doc/src/dyntrace.xml b/lib/runtime_tools/doc/src/dyntrace.xml
index 0cdcecab68..4935dfcd71 100644
--- a/lib/runtime_tools/doc/src/dyntrace.xml
+++ b/lib/runtime_tools/doc/src/dyntrace.xml
@@ -32,7 +32,7 @@
     <rev>A</rev>
     <file>dyntrace.xml</file>
   </header>
-  <module>dyntrace</module>
+  <module since="OTP R15B01">dyntrace</module>
   <modulesummary>Interface to dynamic tracing</modulesummary>
   <description>
     <p>This module implements interfaces to dynamic tracing, should such be compiled into the virtual machine. For a standard and/or commercial build, no dynamic tracing is available, in which case none of the functions in this module is usable or give any effect.</p>
@@ -47,7 +47,7 @@
   </description>
   <funcs>
     <func>
-      <name>available() -> boolean()</name>
+      <name since="OTP R15B01">available() -> boolean()</name>
       <fsummary>Check if dynamic tracing is available</fsummary>
       <desc>
 	<p>This function uses the NIF library to determine if dynamic
@@ -59,42 +59,42 @@
       </desc>
     </func>
     <func>
-      <name>p() -> true | false | error | badarg</name>
+      <name since="OTP R15B01">p() -> true | false | error | badarg</name>
       <fsummary>Trigger the user trace probe.</fsummary>
       <desc>
         <p>Calling this function will trigger the "user" trace probe user_trace_i4s4 in the dyntrace NIF module, sending a trace message only containing the user tag and zeroes/empty strings in all other fields.</p>
       </desc>
     </func>
     <func>
-      <name>p(integer() | string()) -> true | false | error | badarg</name>
+      <name since="OTP R15B01">p(integer() | string()) -> true | false | error | badarg</name>
       <fsummary>Trigger the user trace probe.</fsummary>
       <desc>
         <p>Calling this function will trigger the "user" trace probe user_trace_i4s4 in the dyntrace NIF module, sending a trace message containing the user tag and the integer or string parameter in the first integer/string field.</p>
       </desc>
     </func>
     <func>
-      <name>p(integer() | string(), integer() | string()) -> true | false | error | badarg</name>
+      <name since="OTP R15B01">p(integer() | string(), integer() | string()) -> true | false | error | badarg</name>
       <fsummary>Trigger the user trace probe.</fsummary>
       <desc>
         <p>Calling this function will trigger the "user" trace probe user_trace_i4s4 in the dyntrace NIF module, sending a trace message containing the user tag and the integer() or string() parameters as the first fields of respective type. integer() parameters should be put before any string() parameters. I.e. <c>p(1,"Hello")</c> is ok, as is <c>p(1,1)</c> and <c>p("Hello","Again")</c>, but not <c>p("Hello",1)</c>.</p>
       </desc>
     </func>
     <func>
-      <name>p(integer() | string(), integer() | string(), integer() | string()) -> true | false | error | badarg</name>
+      <name since="OTP R15B01">p(integer() | string(), integer() | string(), integer() | string()) -> true | false | error | badarg</name>
       <fsummary>Trigger the user trace probe.</fsummary>
       <desc>
         <p>Calling this function will trigger the "user" trace probe user_trace_i4s4 in the dyntrace NIF module, sending a trace message containing the user tag and the integer() or string() parameters as the first fields of respective type. integer() parameters should be put before any string() parameters, as in <seealso marker="#p/2">p/2</seealso>.</p>
       </desc>
     </func>
     <func>
-      <name>p(integer() | string(), integer() | string(), integer() | string(), integer() | string()) -> true | false | error | badarg</name>
+      <name since="OTP R15B01">p(integer() | string(), integer() | string(), integer() | string(), integer() | string()) -> true | false | error | badarg</name>
       <fsummary>Trigger the user trace probe.</fsummary>
       <desc>
         <p>Calling this function will trigger the "user" trace probe user_trace_i4s4 in the dyntrace NIF module, sending a trace message containing the user tag and the integer() or string() parameters as the first fields of respective type. integer() parameters should be put before any string() parameters, as in <seealso marker="#p/2">p/2</seealso>.</p>
       </desc>
     </func>
     <func>
-      <name>p(integer(), integer() | string(), integer() | string(), integer() | string(), string()) -> true | false | error | badarg</name>
+      <name since="OTP R15B01">p(integer(), integer() | string(), integer() | string(), integer() | string(), string()) -> true | false | error | badarg</name>
       <fsummary>Trigger the user trace probe.</fsummary>
       <desc>
         <p>Calling this function will trigger the "user" trace probe user_trace_i4s4 in the dyntrace NIF module, sending a trace message containing the user tag and the integer() or string() parameters as the first fields of respective type. integer() parameters should be put before any string() parameters, as in <seealso marker="#p/2">p/2</seealso>.</p>
@@ -102,7 +102,7 @@
       </desc>
     </func>
      <func>
-      <name>p(integer(), integer(), integer() | string(), integer() | string(), string(), string()) -> true | false | error | badarg</name>
+      <name since="OTP R15B01">p(integer(), integer(), integer() | string(), integer() | string(), string(), string()) -> true | false | error | badarg</name>
       <fsummary>Trigger the user trace probe.</fsummary>
       <desc>
         <p>Calling this function will trigger the "user" trace probe user_trace_i4s4 in the dyntrace NIF module, sending a trace message containing the user tag and the integer() or string() parameters as the first fields of respective type. integer() parameters should be put before any string() parameters, as in <seealso marker="#p/2">p/2</seealso>.</p>
@@ -110,7 +110,7 @@
       </desc>
     </func>
      <func>
-      <name>p(integer(), integer(), integer(), integer() | string(), string(), string(), string()) -> true | false | error | badarg</name>
+      <name since="OTP R15B01">p(integer(), integer(), integer(), integer() | string(), string(), string(), string()) -> true | false | error | badarg</name>
       <fsummary>Trigger the user trace probe.</fsummary>
       <desc>
         <p>Calling this function will trigger the "user" trace probe user_trace_i4s4 in the dyntrace NIF module, sending a trace message containing the user tag and the integer() or string() parameters as the first fields of respective type. integer() parameters should be put before any string() parameters, as in <seealso marker="#p/2">p/2</seealso>.</p>
@@ -118,14 +118,14 @@
       </desc>
     </func>
      <func>
-      <name>p(integer(), integer(), integer(), integer(), string(), string(), string(), string()) -> true | false | error | badarg</name>
+      <name since="OTP R15B01">p(integer(), integer(), integer(), integer(), string(), string(), string(), string()) -> true | false | error | badarg</name>
       <fsummary>Trigger the user trace probe.</fsummary>
       <desc>
         <p>Calling this function will trigger the "user" trace probe user_trace_i4s4 in the dyntrace NIF module, sending a trace message containing all the integer()'s and string()'s provided, as well as any user tag set in the current process.</p> 
       </desc>
     </func>
     <func>
-      <name>get_tag() -> binary() | undefined</name>
+      <name since="OTP R15B01">get_tag() -> binary() | undefined</name>
       <fsummary>Get the user tag set in the process.</fsummary>
       <desc>
 	<p>This function returns the user tag set in the current
@@ -134,7 +134,7 @@
       </desc>
     </func>
     <func>
-      <name>get_tag() -> binary() | undefined</name>
+      <name since="OTP R15B01">get_tag() -> binary() | undefined</name>
       <fsummary>Get the user tag set in the process or sent to the process.</fsummary>
       <desc>
 	<p>This function returns the user tag set in the current
@@ -151,7 +151,7 @@
     </func>
     
     <func>
-      <name>put_tag(Item) -> binary() | undefined </name>
+      <name since="OTP R15B01">put_tag(Item) -> binary() | undefined </name>
       <fsummary>Set the user tag of the current process.</fsummary>
       <type>
         <v>Item = iodata()</v>
@@ -163,7 +163,7 @@
       </desc>
     </func>
     <func>
-      <name>spread_tag(boolean()) -> TagData</name>
+      <name since="OTP R15B01">spread_tag(boolean()) -> TagData</name>
       <fsummary>Start or stop spreading dynamic trace user tags with the next message.</fsummary>
       <type>
         <v>TagData = opaque data that can be used as parameter to <seealso marker="#restore_tag/1">restore_tag/1</seealso></v>
@@ -185,7 +185,7 @@ f() ->
       </desc>
     </func>
     <func>
-    <name>restore_tag(TagData) -> true</name>
+    <name since="OTP R15B01">restore_tag(TagData) -> true</name>
       <fsummary>Restore to a previous state of user tag spreading.</fsummary>
       <type>
         <v>TagData = opaque data returned by <seealso marker="#spread_tag/1">spread_tag/1</seealso></v>
diff --git a/lib/runtime_tools/doc/src/erts_alloc_config.xml b/lib/runtime_tools/doc/src/erts_alloc_config.xml
index ffc4ec5285..5bcce1b5e3 100644
--- a/lib/runtime_tools/doc/src/erts_alloc_config.xml
+++ b/lib/runtime_tools/doc/src/erts_alloc_config.xml
@@ -29,7 +29,7 @@
     <rev>1</rev>
     <file>erts_alloc_config.sgml</file>
   </header>
-  <module>erts_alloc_config</module>
+  <module since="">erts_alloc_config</module>
   <modulesummary>Configuration tool for erts_alloc</modulesummary>
   <description>
     <note>
@@ -136,7 +136,7 @@
   </description>
   <funcs>
     <func>
-      <name>save_scenario() -> ok | {error, Error}</name>
+      <name since="">save_scenario() -> ok | {error, Error}</name>
       <fsummary>Saves information about current runtime scenario</fsummary>
       <type>
         <v>Error = term()</v>
@@ -154,7 +154,7 @@
       </desc>
     </func>
     <func>
-      <name>make_config() -> ok | {error, Error}</name>
+      <name since="">make_config() -> ok | {error, Error}</name>
       <fsummary>Creates an erts_alloc configuration</fsummary>
       <type>
         <v>Error = term()</v>
@@ -165,7 +165,7 @@
       </desc>
     </func>
     <func>
-      <name>make_config(FileNameOrIODev) -> ok | {error, Error}</name>
+      <name since="">make_config(FileNameOrIODev) -> ok | {error, Error}</name>
       <fsummary>Creates an erts_alloc configuration</fsummary>
       <type>
         <v>FileNameOrIODev = string() | io_device()</v>
@@ -190,7 +190,7 @@
       </desc>
     </func>
     <func>
-      <name>stop() -> ok | {error, Error}</name>
+      <name since="">stop() -> ok | {error, Error}</name>
       <fsummary></fsummary>
       <type>
         <v>Error = term()</v>
diff --git a/lib/runtime_tools/doc/src/msacc.xml b/lib/runtime_tools/doc/src/msacc.xml
index 129da3d230..ae089de8d0 100644
--- a/lib/runtime_tools/doc/src/msacc.xml
+++ b/lib/runtime_tools/doc/src/msacc.xml
@@ -31,7 +31,7 @@
     <rev>A</rev>
     <file>msacc.xml</file>
   </header>
-  <module>msacc</module>
+  <module since="OTP 19.0">msacc</module>
   <modulesummary>Convenience functions for microstate accounting</modulesummary>
   <description>
     <p>This module implements some convenience functions for analyzing
@@ -146,7 +146,7 @@ ok
   </datatypes>
   <funcs>
     <func>
-      <name name="available" arity="0"/>
+      <name name="available" arity="0" since="OTP 19.0"/>
       <fsummary>Check if microstate accounting is available</fsummary>
       <desc>
 	<p>This function checks whether microstate accounting
@@ -154,7 +154,7 @@ ok
       </desc>
     </func>
     <func>
-      <name name="start" arity="0"/>
+      <name name="start" arity="0" since="OTP 19.0"/>
       <fsummary>Start microstate accounting.</fsummary>
       <desc>
         <p>Start microstate accounting. Returns whether it was
@@ -162,7 +162,7 @@ ok
       </desc>
     </func>
     <func>
-      <name name="start" arity="1"/>
+      <name name="start" arity="1" since="OTP 19.0"/>
       <fsummary>Start microstate accounting for a time.</fsummary>
       <desc>
         <p>Resets all counters and then starts microstate accounting
@@ -170,7 +170,7 @@ ok
       </desc>
     </func>
     <func>
-      <name name="stop" arity="0"/>
+      <name name="stop" arity="0" since="OTP 19.0"/>
       <fsummary>Stop microstate accounting.</fsummary>
       <desc>
         <p>Stop microstate accounting.
@@ -178,7 +178,7 @@ ok
       </desc>
     </func>
     <func>
-      <name name="reset" arity="0"/>
+      <name name="reset" arity="0" since="OTP 19.0"/>
       <fsummary>Reset microstate accounting counters</fsummary>
       <desc>
         <p>Reset microstate accounting counters.
@@ -186,7 +186,7 @@ ok
       </desc>
     </func>
     <func>
-      <name name="print" arity="0"/>
+      <name name="print" arity="0" since="OTP 19.0"/>
       <fsummary>Print microstate statistics</fsummary>
       <desc>
         <p>
@@ -199,7 +199,7 @@ ok
       </desc>
     </func>
     <func>
-      <name name="print" arity="1"/>
+      <name name="print" arity="1" since="OTP 19.0"/>
       <fsummary>Print microstate statistics</fsummary>
       <desc>
         <p>Print the given microstate statistics values to stdout.
@@ -211,7 +211,7 @@ ok
       </desc>
     </func>
     <func>
-      <name name="print" arity="2"/>
+      <name name="print" arity="2" since="OTP 19.0"/>
       <fsummary>Print microstate statistics</fsummary>
       <desc>
         <p>Print the given microstate statistics values to standard out.
@@ -234,7 +234,7 @@ ok
       </desc>
     </func>
     <func>
-      <name name="print" arity="3"/>
+      <name name="print" arity="3" since="OTP 19.0"/>
       <fsummary>Print microstate statistics</fsummary>
       <desc>
         <p>Print the given microstate statistics values to the given file
@@ -243,7 +243,7 @@ ok
       </desc>
     </func>
     <func>
-      <name name="stats" arity="0"/>
+      <name name="stats" arity="0" since="OTP 19.0"/>
       <fsummary></fsummary>
       <desc>
         <p>Returns a runtime system independent version of the microstate
@@ -254,7 +254,7 @@ ok
       </desc>
     </func>
     <func>
-      <name name="stats" arity="2" clause_i="1"/>
+      <name name="stats" arity="2" clause_i="1" since="OTP 19.0"/>
       <fsummary></fsummary>
       <desc>
         <p>Returns the system time for the given microstate statistics values.
@@ -269,7 +269,7 @@ ok
       </desc>
     </func>
     <func>
-      <name name="stats" arity="2" clause_i="2"/>
+      <name name="stats" arity="2" clause_i="2" since="OTP 19.0"/>
       <fsummary></fsummary>
       <desc>
         <p>Returns fractions of real-time or run-time spent in the various
@@ -277,7 +277,7 @@ ok
       </desc>
     </func>
     <func>
-      <name name="stats" arity="2" clause_i="3"/>
+      <name name="stats" arity="2" clause_i="3" since="OTP 19.0"/>
       <fsummary></fsummary>
       <desc>
         <p>Returns a list of microstate statistics values where the values
@@ -285,7 +285,7 @@ ok
       </desc>
     </func>
     <func>
-      <name name="to_file" arity="1"/>
+      <name name="to_file" arity="1" since="OTP 19.0"/>
       <fsummary></fsummary>
       <desc>
         <p>Dumps the current microstate statistics counters to a file that can
@@ -294,7 +294,7 @@ ok
       </desc>
     </func>
     <func>
-      <name name="from_file" arity="1"/>
+      <name name="from_file" arity="1" since="OTP 19.0"/>
       <fsummary></fsummary>
       <desc>
         <p>Read a file dump produced by <seealso marker="#to_file/1">
diff --git a/lib/runtime_tools/doc/src/notes.xml b/lib/runtime_tools/doc/src/notes.xml
index 810bb8207c..58a2a66c4b 100644
--- a/lib/runtime_tools/doc/src/notes.xml
+++ b/lib/runtime_tools/doc/src/notes.xml
@@ -32,6 +32,21 @@
   <p>This document describes the changes made to the Runtime_Tools
     application.</p>
 
+<section><title>Runtime_Tools 1.13.2</title>
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+          <p>
+	    Update of systemtap trace example scripts.</p>
+          <p>
+	    Own Id: OTP-15670</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Runtime_Tools 1.13.1</title>
 
     <section><title>Improvements and New Features</title>
diff --git a/lib/runtime_tools/doc/src/scheduler.xml b/lib/runtime_tools/doc/src/scheduler.xml
index dd8bf73bae..b033430183 100644
--- a/lib/runtime_tools/doc/src/scheduler.xml
+++ b/lib/runtime_tools/doc/src/scheduler.xml
@@ -32,7 +32,7 @@
     <rev></rev>
     <file>scheduler.xml</file>
   </header>
-  <module>scheduler</module>
+  <module since="OTP 21.0">scheduler</module>
   <modulesummary>Measure scheduler utilization</modulesummary>
   <description>
     <p>This module contains utility functions for easier measurement and
@@ -84,7 +84,7 @@
   <funcs>
 
     <func>
-      <name name="sample" arity="0"/>
+      <name name="sample" arity="0" since="OTP 21.0"/>
       <fsummary>Get scheduler utilization sample.</fsummary>
       <desc>
         <p>Return a scheduler utilization sample for normal and dirty-cpu
@@ -93,7 +93,7 @@
     </func>
 
     <func>
-      <name name="sample_all" arity="0"/>
+      <name name="sample_all" arity="0" since="OTP 21.0"/>
       <fsummary>Get scheduler utilization sample.</fsummary>
       <desc>
         <p>Return a scheduler utilization sample for all schedulers,
@@ -102,7 +102,7 @@
     </func>
 
     <func>
-      <name name="utilization" arity="1" clause_i="1"/>
+      <name name="utilization" arity="1" clause_i="1" since="OTP 21.0"/>
       <fsummary>Measure scheduler utilizations during a period of time.</fsummary>
       <desc>
         <p>Measure utilization for normal and dirty-cpu schedulers during
@@ -111,7 +111,7 @@
     </func>
 
     <func>
-      <name name="utilization" arity="1" clause_i="2"/>
+      <name name="utilization" arity="1" clause_i="2" since="OTP 21.0"/>
       <fsummary>Measure scheduler utilizations since sample.</fsummary>
       <desc>
         <p>Calculate scheduler utilizations for the time interval from when
@@ -121,7 +121,7 @@
     </func>
 
     <func>
-      <name name="utilization" arity="2"/>
+      <name name="utilization" arity="2" since="OTP 21.0"/>
       <fsummary>Measure scheduler utilizations between two samples.</fsummary>
       <desc>
 	<p>Calculates scheduler utilizations for the time interval between
diff --git a/lib/runtime_tools/doc/src/system_information.xml b/lib/runtime_tools/doc/src/system_information.xml
index 53dc595e64..a356b5c6f8 100644
--- a/lib/runtime_tools/doc/src/system_information.xml
+++ b/lib/runtime_tools/doc/src/system_information.xml
@@ -32,14 +32,14 @@
     <rev></rev>
     <file>system_information.xml</file>
   </header>
-  <module>system_information</module>
+  <module since="OTP 17.0">system_information</module>
   <modulesummary>System Information</modulesummary>
   <description>
     <p></p>
   </description>
   <funcs>
     <func>
-      <name name="sanity_check" arity="0"/>
+      <name name="sanity_check" arity="0" since="OTP 17.0"/>
       <fsummary>Perform a sanity check</fsummary>
       <desc>
         <p>Performs a sanity check on the system. If no issues
@@ -88,7 +88,7 @@
       </desc>
     </func>
     <func>
-      <name name="to_file" arity="1"/>
+      <name name="to_file" arity="1" since="OTP 17.0"/>
       <fsummary>Write miscellaneous system information to file</fsummary>
       <desc><p>Writes  miscellaneous system information to file. This
       information will typically be requested by the Erlang/OTP team
diff --git a/lib/runtime_tools/examples/dist.systemtap b/lib/runtime_tools/examples/dist.systemtap
index bb20d617e1..4102a5243c 100644
--- a/lib/runtime_tools/examples/dist.systemtap
+++ b/lib/runtime_tools/examples/dist.systemtap
@@ -19,18 +19,18 @@
  * %CopyrightEnd%
  */
 /*
- * Note: This file assumes that you're using the non-SMP-enabled Erlang
- *       virtual machine, "beam".  The SMP-enabled VM is called "beam.smp".
+ * Note: This file assumes that you're using the SMP-enabled Erlang
+ *       virtual machine, "beam.smp".
  *       Note that other variations of the virtual machine also have
  *       different names, e.g. the debug build of the SMP-enabled VM
  *       is "beam.debug.smp".
  *
  *       To use a different virtual machine, replace each instance of
- *       "beam" with "beam.smp" or the VM name appropriate to your
- *       environment.
+ *       "beam.smp" with "beam.debug.smp" or the VM name appropriate
+ *       to your environment.
  */
 
-probe process("beam").mark("dist-monitor")
+probe process("beam.smp").mark("dist-monitor")
 {
     printf("monitor: pid %d, who %s, what %s, node %s, type %s, reason %s\n",
            pid(),
@@ -38,38 +38,38 @@ probe process("beam").mark("dist-monitor")
            user_string($arg5));
 }
 
-probe process("beam").mark("dist-port_busy")
+probe process("beam.smp").mark("dist-port_busy")
 {
     printf("dist port_busy: node %s, port %s, remote_node %s, blocked pid %s\n",
            user_string($arg1), user_string($arg2), user_string($arg3), user_string($arg4));
-    blocked_procs[user_string($arg4)] = timestamp;
+    blocked_procs[user_string($arg4)] = local_clock_ns();
 }
 
-probe process("beam").mark("dist-port_busy")
+probe process("beam.smp").mark("dist-port_busy")
 {
     printf("dist port_busy: node %s, port %s, remote_node %s, blocked pid %s\n",
            user_string($arg1), user_string($arg2), user_string($arg3), user_string($arg4));
-    blocked_procs[user_string($arg4)] = timestamp;
+    blocked_procs[user_string($arg4)] = local_clock_ns();
 }
 
-probe process("beam").mark("dist-output")
+probe process("beam.smp").mark("dist-output")
 {
     printf("dist output: node %s, port %s, remote_node %s bytes %d\n",
            user_string($arg1), user_string($arg2), user_string($arg3), $arg4);
 }
 
-probe process("beam").mark("dist-outputv")
+probe process("beam.smp").mark("dist-outputv")
 {
     printf("port outputv: node %s, port %s, remote_node %s bytes %d\n",
            user_string($arg1), user_string($arg2), user_string($arg3), $arg4);
 }
 
-probe process("beam").mark("process-scheduled")
+probe process("beam.smp").mark("process-scheduled")
 {
     pidstr = user_string($arg1);
     if (pidstr in blocked_procs) {
 	printf("blocked pid %s scheduled now, waited %d microseconds\n",
-		pidstr, (timestamp - blocked_procs[pidstr]) / 1000);
+		pidstr, (local_clock_ns() - blocked_procs[pidstr]) / 1000);
 	delete blocked_procs[pidstr];
     }
 }
diff --git a/lib/runtime_tools/examples/driver1.systemtap b/lib/runtime_tools/examples/driver1.systemtap
index e1ee8ecffc..f5bc28b42d 100644
--- a/lib/runtime_tools/examples/driver1.systemtap
+++ b/lib/runtime_tools/examples/driver1.systemtap
@@ -19,108 +19,102 @@
  * %CopyrightEnd%
  */
 /*
- * Note: This file assumes that you're using the non-SMP-enabled Erlang
- *       virtual machine, "beam".  The SMP-enabled VM is called "beam.smp".
+ * Note: This file assumes that you're using the SMP-enabled Erlang
+ *       virtual machine, "beam.smp".
  *       Note that other variations of the virtual machine also have
  *       different names, e.g. the debug build of the SMP-enabled VM
  *       is "beam.debug.smp".
  *
  *       To use a different virtual machine, replace each instance of
- *       "beam" with "beam.smp" or the VM name appropriate to your
- *       environment.
+ *       "beam.smp" with "beam.debug.smp" or the VM name appropriate
+ *       to your environment.
  */
 
-probe process("beam").mark("driver-init")
+probe process("beam.smp").mark("driver__init")
 {
     printf("driver init name %s major %d minor %d flags %d\n",
 	   user_string($arg1), $arg2, $arg3, $arg4);
 }
 
-probe process("beam").mark("driver-start")
+probe process("beam.smp").mark("driver__start")
 {
     printf("driver start pid %s driver name %s port %s\n",
 	   user_string($arg1), user_string($arg2), user_string($arg3));
 }
 
-probe process("beam").mark("driver-stop")
+probe process("beam.smp").mark("driver__stop")
 {
     printf("driver stop pid %s driver name %s port %s\n",
 	   user_string($arg1), user_string($arg2), user_string($arg3));
 }
 
-probe process("beam").mark("driver-finish")
+probe process("beam.smp").mark("driver__finish")
 {
     printf("driver finish driver name %s\n",
            user_string($arg1));
 }
 
-probe process("beam").mark("driver-flush")
+probe process("beam.smp").mark("driver__flush")
 {
     printf("driver flush pid %s port %s port name %s\n",
 	   user_string($arg1), user_string($arg2), user_string($arg3));
 }
 
-probe process("beam").mark("driver-output")
+probe process("beam.smp").mark("driver__output")
 {
     printf("driver output pid %s port %s port name %s bytes %d\n",
 	   user_string($arg1), user_string($arg2), user_string($arg3), $arg4);
 }
 
-probe process("beam").mark("driver-outputv")
+probe process("beam.smp").mark("driver__outputv")
 {
     printf("driver outputv pid %s port %s port name %s bytes %d\n",
 	   user_string($arg1), user_string($arg2), user_string($arg3), $arg4);
 }
 
-probe process("beam").mark("driver-control")
+probe process("beam.smp").mark("driver__control")
 {
     printf("driver control pid %s port %s port name %s command %d bytes %d\n",
 	   user_string($arg1), user_string($arg2), user_string($arg3), $arg4, $arg5);
 }
 
-probe process("beam").mark("driver-call")
+probe process("beam.smp").mark("driver__call")
 {
     printf("driver call pid %s port %s port name %s command %d bytes %d\n",
 	   user_string($arg1), user_string($arg2), user_string($arg3), $arg4, $arg5);
 }
 
-probe process("beam").mark("driver-event")
-{
-    printf("driver event pid %s port %s port name %s\n",
-	   user_string($arg1), user_string($arg2), user_string($arg3));
-}
-
-probe process("beam").mark("driver-ready_input")
+probe process("beam.smp").mark("driver__ready_input")
 {
     printf("driver ready_input pid %s port %s port name %s\n",
 	   user_string($arg1), user_string($arg2), user_string($arg3));
 }
 
-probe process("beam").mark("driver-ready_output")
+probe process("beam.smp").mark("driver__ready_output")
 {
     printf("driver ready_output pid %s port %s port name %s\n",
 	   user_string($arg1), user_string($arg2), user_string($arg3));
 }
 
-probe process("beam").mark("driver-timeout")
+probe process("beam.smp").mark("driver__timeout")
 {
     printf("driver timeout pid %s port %s port name %s\n",
 	   user_string($arg1), user_string($arg2), user_string($arg3));
 }
 
-probe process("beam").mark("driver-ready_async")
+probe process("beam.smp").mark("driver__ready_async")
 {
     printf("driver ready_async pid %s port %s port name %s\n",
 	   user_string($arg1), user_string($arg2), user_string($arg3));
 }
 
-probe process("beam").mark("driver-process_exit")
+probe process("beam.smp").mark("driver__process_exit")
 {
     printf("driver process_exit pid %s port %s port name %s\n",
 	   user_string($arg1), user_string($arg2), user_string($arg3));
 }
 
-probe process("beam").mark("driver-stop_select")
+probe process("beam.smp").mark("driver__stop_select")
 {
     printf("driver stop_select driver name %s\n", user_string($arg1));
 }
diff --git a/lib/runtime_tools/examples/function-calls.systemtap b/lib/runtime_tools/examples/function-calls.systemtap
index 9c44b2d014..6bb173b3ec 100644
--- a/lib/runtime_tools/examples/function-calls.systemtap
+++ b/lib/runtime_tools/examples/function-calls.systemtap
@@ -18,51 +18,51 @@
  * %CopyrightEnd%
  */
 /*
- * Note: This file assumes that you're using the non-SMP-enabled Erlang
- *       virtual machine, "beam".  The SMP-enabled VM is called "beam.smp".
+ * Note: This file assumes that you're using the SMP-enabled Erlang
+ *       virtual machine, "beam.smp".
  *       Note that other variations of the virtual machine also have
  *       different names, e.g. the debug build of the SMP-enabled VM
  *       is "beam.debug.smp".
  *
  *       To use a different virtual machine, replace each instance of
- *       "beam" with "beam.smp" or the VM name appropriate to your
- *       environment.
+ *       "beam.smp" with "beam.debug.smp" or the VM name appropriate
+ *       to your environment.
  */
 
-probe process("beam").mark("local-function-entry")
+probe process("beam.smp").mark("local-function-entry")
 {
     printf("pid %s enter (local) %s depth %d\n",
 	   user_string($arg1), user_string($arg2), $arg3);
 }
 
-probe process("beam").mark("global-function-entry")
+probe process("beam.smp").mark("global-function-entry")
 {
     printf("pid %s enter (global)  %s depth %d\n",
 	   user_string($arg1), user_string($arg2), $arg3);
 }
 
-probe process("beam").mark("function-return")
+probe process("beam.smp").mark("function-return")
 {
     printf("pid %s return %s depth %d\n",
 	   user_string($arg1), user_string($arg2), $arg3);
 }
 
-probe process("beam").mark("bif-entry")
+probe process("beam.smp").mark("bif-entry")
 {
     printf("pid %s BIF entry  mfa %s\n", user_string($arg1), user_string($arg2));
 }
 
-probe process("beam").mark("bif-return")
+probe process("beam.smp").mark("bif-return")
 {
     printf("pid %s BIF return mfa %s\n", user_string($arg1), user_string($arg2));
 }
 
-probe process("beam").mark("nif-entry")
+probe process("beam.smp").mark("nif-entry")
 {
     printf("pid %s NIF entry  mfa %s\n", user_string($arg1), user_string($arg2));
 }
 
-probe process("beam").mark("nif-return")
+probe process("beam.smp").mark("nif-return")
 {
     printf("pid %s NIF return mfa %s\n", user_string($arg1), user_string($arg2));
 }
diff --git a/lib/runtime_tools/examples/garbage-collection.systemtap b/lib/runtime_tools/examples/garbage-collection.systemtap
index e414eea821..14f0d6851c 100644
--- a/lib/runtime_tools/examples/garbage-collection.systemtap
+++ b/lib/runtime_tools/examples/garbage-collection.systemtap
@@ -18,33 +18,33 @@
  * %CopyrightEnd%
  */
 /*
- * Note: This file assumes that you're using the non-SMP-enabled Erlang
- *       virtual machine, "beam".  The SMP-enabled VM is called "beam.smp".
+ * Note: This file assumes that you're using the SMP-enabled Erlang
+ *       virtual machine, "beam.smp".
  *       Note that other variations of the virtual machine also have
  *       different names, e.g. the debug build of the SMP-enabled VM
  *       is "beam.debug.smp".
  *
  *       To use a different virtual machine, replace each instance of
- *       "beam" with "beam.smp" or the VM name appropriate to your
- *       environment.
+ *       "beam.smp" with "beam.debug.smp" or the VM name appropriate
+ *       to your environment.
  */
 
-probe process("beam").mark("gc_major-start")
+probe process("beam.smp").mark("gc_major-start")
 {
     printf("GC major start pid %s need %d words\n", user_string($arg1), $arg2);
 }
 
-probe process("beam").mark("gc_minor-start")
+probe process("beam.smp").mark("gc_minor-start")
 {
     printf("GC minor start pid %s need %d words\n", user_string($arg1), $arg2);
 }
 
-probe process("beam").mark("gc_major-end")
+probe process("beam.smp").mark("gc_major-end")
 {
     printf("GC major end pid %s reclaimed %d words\n", user_string($arg1), $arg2);
 }
 
-probe process("beam").mark("gc_minor-start")
+probe process("beam.smp").mark("gc_minor-start")
 {
     printf("GC minor end pid %s reclaimed %d words\n", user_string($arg1), $arg2);
 }
diff --git a/lib/runtime_tools/examples/memory1.systemtap b/lib/runtime_tools/examples/memory1.systemtap
index 04df4d64c4..2fdc5a796c 100644
--- a/lib/runtime_tools/examples/memory1.systemtap
+++ b/lib/runtime_tools/examples/memory1.systemtap
@@ -18,34 +18,34 @@
  * %CopyrightEnd%
  */
 /*
- * Note: This file assumes that you're using the non-SMP-enabled Erlang
- *       virtual machine, "beam".  The SMP-enabled VM is called "beam.smp".
+ * Note: This file assumes that you're using the SMP-enabled Erlang
+ *       virtual machine, "beam.smp".
  *       Note that other variations of the virtual machine also have
  *       different names, e.g. the debug build of the SMP-enabled VM
  *       is "beam.debug.smp".
  *
  *       To use a different virtual machine, replace each instance of
- *       "beam" with "beam.smp" or the VM name appropriate to your
- *       environment.
+ *       "beam.smp" with "beam.debug.smp" or the VM name appropriate
+ *       to your environment.
  */
 
-probe process("beam").mark("copy-struct")
+probe process("beam.smp").mark("copy-struct")
 {
     printf("copy_struct %d bytes\n", $arg1);
 }
 
-probe process("beam").mark("copy-object")
+probe process("beam.smp").mark("copy-object")
 {
     printf("copy_object pid %s %d bytes\n", user_string($arg1), $arg2);
 }
 
-probe process("beam").mark("process-heap_grow")
+probe process("beam.smp").mark("process-heap_grow")
 {
     printf("proc heap grow pid %s %d -> %d bytes\n", user_string($arg1),
 	   $arg2, $arg3);
 }
 
-probe process("beam").mark("process-heap_shrink")
+probe process("beam.smp").mark("process-heap_shrink")
 {
     printf("proc heap shrink pid %s %d -> %d bytes\n", user_string($arg1),
 	   $arg2, $arg3);
diff --git a/lib/runtime_tools/examples/messages.systemtap b/lib/runtime_tools/examples/messages.systemtap
index f2ef56a22b..49b7f46d69 100644
--- a/lib/runtime_tools/examples/messages.systemtap
+++ b/lib/runtime_tools/examples/messages.systemtap
@@ -18,15 +18,15 @@
  * %CopyrightEnd%
  */
 /*
- * Note: This file assumes that you're using the non-SMP-enabled Erlang
- *       virtual machine, "beam".  The SMP-enabled VM is called "beam.smp".
+ * Note: This file assumes that you're using the SMP-enabled Erlang
+ *       virtual machine, "beam.smp".
  *       Note that other variations of the virtual machine also have
  *       different names, e.g. the debug build of the SMP-enabled VM
  *       is "beam.debug.smp".
  *
  *       To use a different virtual machine, replace each instance of
- *       "beam" with "beam.smp" or the VM name appropriate to your
- *       environment.
+ *       "beam.smp" with "beam.debug.smp" or the VM name appropriate
+ *       to your environment.
  */
 
 probe begin
@@ -38,7 +38,7 @@ probe begin
     printf("\n");
 }
 
-probe process("beam").mark("message-send")
+probe process("beam.smp").mark("message-send")
 {
     if ($arg4 == 0 && $arg5 == 0 && $arg6 == 0) {
         printf("send:   %s -> %s: %d words\n",
@@ -51,7 +51,7 @@ probe process("beam").mark("message-send")
     }
 }
 
-probe process("beam").mark("message-send-remote")
+probe process("beam.smp").mark("message-send-remote")
 {
     if ($arg5 == 0 && $arg6 == 0 && $arg7 == 0) {
         printf("send :  %s -> %s %s: %d words\n",
@@ -64,7 +64,7 @@ probe process("beam").mark("message-send-remote")
     }
 }
 
-probe process("beam").mark("message-queued")
+probe process("beam.smp").mark("message-queued")
 {
     if ($arg4 == 0 && $arg5 == 0 && $arg6 == 0) {
         printf("queued: %s: %d words, queue len %d\n", user_string($arg1), $arg2, $arg3);
@@ -75,7 +75,7 @@ probe process("beam").mark("message-queued")
     }
 }
 
-probe process("beam").mark("message-receive")
+probe process("beam.smp").mark("message-receive")
 {
     if ($arg4 == 0 && $arg5 == 0 && $arg6 == 0) {
         printf("receive: %s: %d words, queue len %d\n",
diff --git a/lib/runtime_tools/examples/port1.systemtap b/lib/runtime_tools/examples/port1.systemtap
index f7ce03a65e..235581b0b1 100644
--- a/lib/runtime_tools/examples/port1.systemtap
+++ b/lib/runtime_tools/examples/port1.systemtap
@@ -18,15 +18,15 @@
  * %CopyrightEnd%
  */
 /*
- * Note: This file assumes that you're using the non-SMP-enabled Erlang
- *       virtual machine, "beam".  The SMP-enabled VM is called "beam.smp".
+ * Note: This file assumes that you're using the SMP-enabled Erlang
+ *       virtual machine, "beam.smp".
  *       Note that other variations of the virtual machine also have
  *       different names, e.g. the debug build of the SMP-enabled VM
  *       is "beam.debug.smp".
  *
  *       To use a different virtual machine, replace each instance of
- *       "beam" with "beam.smp" or the VM name appropriate to your
- *       environment.
+ *       "beam.smp" with "beam.debug.smp" or the VM name appropriate
+ *       to your environment.
  */
 
 probe begin
@@ -96,19 +96,19 @@ probe begin
         driver_map["udp_inet", 62] = "BINDX";
 }
 
-probe process("beam").mark("port-open")
+probe process("beam.smp").mark("port-open")
 {
     printf("port open pid %s port name %s port %s\n",
            user_string($arg1), user_string($arg2), user_string($arg3));
 }
 
-probe process("beam").mark("port-command")
+probe process("beam.smp").mark("port-command")
 {
     printf("port command pid %s port %s port name %s command type %s\n",
 	   user_string($arg1), user_string($arg2), user_string($arg3), user_string($arg4));
 }
 
-probe process("beam").mark("port-control")
+probe process("beam.smp").mark("port-control")
 {
     cmd = driver_map[user_string($arg3), $arg4];
     cmd_str = (cmd == "") ? "unknown" : cmd;
@@ -118,36 +118,36 @@ probe process("beam").mark("port-control")
 
 /* port-exit is fired as a result of port_close() or exit signal */
 
-probe process("beam").mark("port-exit")
+probe process("beam.smp").mark("port-exit")
 {
     printf("port exit pid %s port %s port name %s reason %s\n",
 	   user_string($arg1), user_string($arg2), user_string($arg3), user_string($arg4));
 }
 
-probe process("beam").mark("port-connect")
+probe process("beam.smp").mark("port-connect")
 {
     printf("port connect pid %s port %s port name %s new pid %s\n",
 	   user_string($arg1), user_string($arg2), user_string($arg3), user_string($arg4));
 }
 
-probe process("beam").mark("port-busy")
+probe process("beam.smp").mark("port-busy")
 {
     printf("port busy %s\n", user_string($arg1));
 }
 
-probe process("beam").mark("port-not_busy")
+probe process("beam.smp").mark("port-not_busy")
 {
     printf("port not busy %s\n", user_string($arg1));
 }
 
-probe process("beam").mark("aio_pool-add")
+probe process("beam.smp").mark("aio_pool-add")
 {
     printf("async I/O pool add thread %d queue len %d\n", $arg1, $arg2);
 }
 
-probe process("beam").mark("aio_pool-get")
+probe process("beam.smp").mark("aio_pool-get")
 {
     printf("async I/O pool get thread %d queue len %d\n", $arg1, $arg2);
 }
 
-global driver_map;
\ No newline at end of file
+global driver_map;
diff --git a/lib/runtime_tools/examples/process-scheduling.systemtap b/lib/runtime_tools/examples/process-scheduling.systemtap
index b0b74257b3..231c589f64 100644
--- a/lib/runtime_tools/examples/process-scheduling.systemtap
+++ b/lib/runtime_tools/examples/process-scheduling.systemtap
@@ -18,28 +18,28 @@
  * %CopyrightEnd%
  */
 /*
- * Note: This file assumes that you're using the non-SMP-enabled Erlang
- *       virtual machine, "beam".  The SMP-enabled VM is called "beam.smp".
+ * Note: This file assumes that you're using the SMP-enabled Erlang
+ *       virtual machine, "beam.smp".
  *       Note that other variations of the virtual machine also have
  *       different names, e.g. the debug build of the SMP-enabled VM
  *       is "beam.debug.smp".
  *
  *       To use a different virtual machine, replace each instance of
- *       "beam" with "beam.smp" or the VM name appropriate to your
- *       environment.
+ *       "beam.smp" with "beam.debug.smp" or the VM name appropriate
+ *       to your environment.
  */
 
-probe process("beam").mark("process-scheduled")
+probe process("beam.smp").mark("process-scheduled")
 {
     printf("  Schedule pid %s mfa %s\n", user_string($arg1), user_string($arg2));
 }
 
-probe process("beam").mark("process-unscheduled")
+probe process("beam.smp").mark("process-unscheduled")
 {
     printf("Unschedule pid %s\n", user_string($arg1));
 }
 
-probe process("beam").mark("process-hibernate")
+probe process("beam.smp").mark("process-hibernate")
 {
     printf("  Hibernate pid %s resume mfa %s\n",
      user_string($arg1), user_string($arg2));
diff --git a/lib/runtime_tools/examples/spawn-exit.systemtap b/lib/runtime_tools/examples/spawn-exit.systemtap
index 89bca14496..a7b4a0a3ea 100644
--- a/lib/runtime_tools/examples/spawn-exit.systemtap
+++ b/lib/runtime_tools/examples/spawn-exit.systemtap
@@ -18,34 +18,34 @@
  * %CopyrightEnd%
  */
 /*
- * Note: This file assumes that you're using the non-SMP-enabled Erlang
- *       virtual machine, "beam".  The SMP-enabled VM is called "beam.smp".
+ * Note: This file assumes that you're using the SMP-enabled Erlang
+ *       virtual machine, "beam.smp".
  *       Note that other variations of the virtual machine also have
  *       different names, e.g. the debug build of the SMP-enabled VM
  *       is "beam.debug.smp".
  *
  *       To use a different virtual machine, replace each instance of
- *       "beam" with "beam.smp" or the VM name appropriate to your
- *       environment.
+ *       "beam.smp" with "beam.debug.smp" or the VM name appropriate
+ *       to your environment.
  */
 
-probe process("beam").mark("process-spawn")
+probe process("beam.smp").mark("process-spawn")
 {
     printf("pid %s mfa %s\n", user_string($arg1), user_string($arg2));
 }
 
-probe process("beam").mark("process-exit")
+probe process("beam.smp").mark("process-exit")
 {
     printf("pid %s reason %s\n", user_string($arg1), user_string($arg2));
 }
 
-probe process("beam").mark("process-exit_signal")
+probe process("beam.smp").mark("process-exit_signal")
 {
     printf("sender %s -> pid %s reason %s\n",
 	   user_string($arg1), user_string($arg2), user_string($arg3));
 }
 
-probe process("beam").mark("process-exit_signal-remote")
+probe process("beam.smp").mark("process-exit_signal-remote")
 {
     printf("sender %s -> node %s pid %s reason %s\n",
 	   user_string($arg1), user_string($arg2), user_string($arg3), user_string($arg4));
diff --git a/lib/runtime_tools/examples/user-probe-n.systemtap b/lib/runtime_tools/examples/user-probe-n.systemtap
index 25f7503283..8a0a89c931 100644
--- a/lib/runtime_tools/examples/user-probe-n.systemtap
+++ b/lib/runtime_tools/examples/user-probe-n.systemtap
@@ -18,18 +18,19 @@
  * %CopyrightEnd%
  */
 /*
- * Note: This file assumes that you're using the non-SMP-enabled Erlang
- *       virtual machine, "beam".  The SMP-enabled VM is called "beam.smp".
+ * Note: This file assumes that you're using the SMP-enabled Erlang
+ *       virtual machine, "beam.smp".
  *       Note that other variations of the virtual machine also have
  *       different names, e.g. the debug build of the SMP-enabled VM
  *       is "beam.debug.smp".
  *
  *       To use a different virtual machine, replace each instance of
- *       "beam" with "beam.smp" or the VM name appropriate to your
- *       environment.
+ *       "beam.smp" with "beam.debug.smp" or the VM name appropriate
+ *       to your environment.
  */
 
-probe process("beam").mark("user_trace-n0")
+
+probe process("beam.smp").mark("user_trace-n0")
 {
     printf("probe n0: %s %s %d %d %d %d '%s' '%s' '%s' '%s'\n",
            user_string($arg1),
@@ -41,7 +42,7 @@ probe process("beam").mark("user_trace-n0")
            $arg9 == NULL ? "" : user_string($arg9));
 }
 
-probe process("beam").mark("user_trace-n1")
+probe process("beam.smp").mark("user_trace-n1")
 {
     printf("probe n1: %s %s %d %d %d %d '%s' '%s' '%s' '%s'\n",
            user_string($arg1),
diff --git a/lib/runtime_tools/examples/user-probe.systemtap b/lib/runtime_tools/examples/user-probe.systemtap
index 1777476e54..ce9dde30f8 100644
--- a/lib/runtime_tools/examples/user-probe.systemtap
+++ b/lib/runtime_tools/examples/user-probe.systemtap
@@ -18,23 +18,23 @@
  * %CopyrightEnd%
  */
 /*
- * Note: This file assumes that you're using the non-SMP-enabled Erlang
- *       virtual machine, "beam".  The SMP-enabled VM is called "beam.smp".
+ * Note: This file assumes that you're using the SMP-enabled Erlang
+ *       virtual machine, "beam.smp".
  *       Note that other variations of the virtual machine also have
  *       different names, e.g. the debug build of the SMP-enabled VM
  *       is "beam.debug.smp".
  *
  *       To use a different virtual machine, replace each instance of
- *       "beam" with "beam.smp" or the VM name appropriate to your
- *       environment.
+ *       "beam.smp" with "beam.debug.smp" or the VM name appropriate
+ *       to your environment.
  */
 
-probe process("beam").mark("user_trace-s1")
+probe process("beam.smp").mark("user_trace-s1")
 {
     printf("%s\n", user_string($arg1));
 }
 
-probe process("beam").mark("user_trace-i4s4")
+probe process("beam.smp").mark("user_trace-i4s4")
 {
     printf("%s %s %d %d %d %d '%s' '%s' '%s' '%s'\n",
            user_string($arg1),
diff --git a/lib/runtime_tools/src/system_information.erl b/lib/runtime_tools/src/system_information.erl
index 136ee55b54..8f7bfa195b 100644
--- a/lib/runtime_tools/src/system_information.erl
+++ b/lib/runtime_tools/src/system_information.erl
@@ -400,7 +400,6 @@ os_getenv_erts_specific() ->
 	    "ERL_MALLOC_LIB",
 	    "ERL_MAX_PORTS",
 	    "ERL_MAX_ETS_TABLES",
-	    "ERL_NO_VFORK",
 	    "ERL_NO_KERNEL_POLL",
 	    "ERL_THREAD_POOL_SIZE",
 	    "ERLC_EMULATOR",
diff --git a/lib/runtime_tools/test/system_information_SUITE_data/information_test_report.dat b/lib/runtime_tools/test/system_information_SUITE_data/information_test_report.dat
index a0e3806981..a9399a5d53 100644
--- a/lib/runtime_tools/test/system_information_SUITE_data/information_test_report.dat
+++ b/lib/runtime_tools/test/system_information_SUITE_data/information_test_report.dat
@@ -6829,7 +6829,7 @@
                         {native,false},
                         {compiler,"4.9.1"},
                         {md5,"55bb9fddcdf820938be2efee15eccd82"}]},
-                      {otp_ring0,
+                      {erl_init,
                        [{loaded,true},
                         {native,false},
                         {compiler,"4.9.1"},
diff --git a/lib/runtime_tools/vsn.mk b/lib/runtime_tools/vsn.mk
index aa3d702997..fa2f338ec2 100644
--- a/lib/runtime_tools/vsn.mk
+++ b/lib/runtime_tools/vsn.mk
@@ -1 +1 @@
-RUNTIME_TOOLS_VSN = 1.13.1
+RUNTIME_TOOLS_VSN = 1.13.2
diff --git a/lib/sasl/doc/src/alarm_handler.xml b/lib/sasl/doc/src/alarm_handler.xml
index 4160757164..6e74f833cd 100644
--- a/lib/sasl/doc/src/alarm_handler.xml
+++ b/lib/sasl/doc/src/alarm_handler.xml
@@ -34,7 +34,7 @@
     <rev>A</rev>
     <file>alarm_handler.sgml.t1</file>
   </header>
-  <module>alarm_handler</module>
+  <module since="">alarm_handler</module>
   <modulesummary>An Alarm Handling Process</modulesummary>
   <description>
     <p>The alarm handler process is a 
@@ -81,7 +81,7 @@
 
   <funcs>
     <func>
-      <name>clear_alarm(AlarmId) -> void()</name>
+      <name since="">clear_alarm(AlarmId) -> void()</name>
       <fsummary>Clears the specified alarms.</fsummary>
       <type>
         <v>AlarmId = term()</v>
@@ -94,7 +94,7 @@
     </func>
 
     <func>
-      <name>get_alarms() -> [alarm()]</name>
+      <name since="">get_alarms() -> [alarm()]</name>
       <fsummary>Gets all active alarms.</fsummary>
       <desc>
         <p>Returns a list of all active alarms. This function can only
@@ -103,7 +103,7 @@
     </func>
 
     <func>
-      <name>set_alarm(alarm())</name>
+      <name since="">set_alarm(alarm())</name>
       <fsummary>Sets an alarm with an id.</fsummary>
       <type>
         <v>alarm() = {AlarmId, AlarmDescription}</v>
diff --git a/lib/sasl/doc/src/rb.xml b/lib/sasl/doc/src/rb.xml
index d5df4fd345..0ed7e91c11 100644
--- a/lib/sasl/doc/src/rb.xml
+++ b/lib/sasl/doc/src/rb.xml
@@ -32,7 +32,7 @@
     <rev>A</rev>
     <file>rb.sgml</file>
   </header>
-  <module>rb</module>
+  <module since="">rb</module>
   <modulesummary>The Report Browser Tool</modulesummary>
   <description>
     <p>The Report Browser (RB) tool is used to browse and
@@ -43,8 +43,8 @@
 
   <funcs>
     <func>
-      <name>filter(Filters)</name>
-      <name>filter(Filters, Dates)</name>
+      <name since="OTP R13B04">filter(Filters)</name>
+      <name since="OTP R13B04">filter(Filters, Dates)</name>
       <fsummary>Filters reports and displays them on the screen.</fsummary>
       <type>
         <v>Filters = [filter()]</v>
@@ -86,7 +86,7 @@
     </func>
 
     <func>
-      <name>grep(RegExp)</name>
+      <name since="">grep(RegExp)</name>
       <fsummary>Searches the reports for a regular expression.</fsummary>
       <type>
         <v>RegExp = string() | {string(), Options} | re:mp() | {re:mp(), Options}</v>
@@ -109,8 +109,8 @@
     </func>
 
     <func>
-      <name>h()</name>
-      <name>help()</name>
+      <name since="">h()</name>
+      <name since="">help()</name>
       <fsummary>Displays help information.</fsummary>
       <desc>
         <p>Displays online help information.</p>
@@ -118,8 +118,8 @@
     </func>
 
     <func>
-      <name>list()</name>
-      <name>list(Type)</name>
+      <name since="">list()</name>
+      <name since="">list(Type)</name>
       <fsummary>Lists all reports.</fsummary>
       <type>
         <v>Type = type()</v>
@@ -137,8 +137,8 @@
     </func>
 
     <func>
-      <name>log_list()</name>
-      <name>log_list(Type)</name>
+      <name since="OTP R16B02">log_list()</name>
+      <name since="OTP R16B02">log_list(Type)</name>
       <fsummary>Logs report lists.</fsummary>
       <type>
         <v>Type = type()</v>
@@ -157,8 +157,8 @@
     </func>
 
     <func>
-      <name>rescan()</name>
-      <name>rescan(Options)</name>
+      <name since="">rescan()</name>
+      <name since="">rescan(Options)</name>
       <fsummary>Rescans the report directory.</fsummary>
       <type>
         <v>Options = [opt()]</v>
@@ -171,8 +171,8 @@
     </func>
 
     <func>
-      <name>show()</name>
-      <name>show(Report)</name>
+      <name since="">show()</name>
+      <name since="">show(Report)</name>
       <fsummary>Displays reports.</fsummary>
       <type>
         <v>Report = integer() | type()</v>
@@ -186,8 +186,8 @@
     </func>
 
     <func>
-      <name>start()</name>
-      <name>start(Options)</name>
+      <name since="">start()</name>
+      <name since="">start(Options)</name>
       <fsummary>Starts the <c>rb_server</c>.</fsummary>
       <type>
         <v>Options = [opt()]</v>
@@ -256,7 +256,7 @@
     </func>
 
     <func>
-      <name>start_log(FileName)</name>
+      <name since="">start_log(FileName)</name>
       <fsummary>Redirects all output to <c>FileName</c>.</fsummary>
       <type>
         <v>FileName = string() | atom() | pid()</v>
@@ -268,7 +268,7 @@
     </func>
 
     <func>
-      <name>stop()</name>
+      <name since="">stop()</name>
       <fsummary>Stops the <c>rb_server</c>.</fsummary>
       <desc>
         <p>Stops <c>rb_server</c>.</p>
@@ -276,7 +276,7 @@
     </func>
 
     <func>
-      <name>stop_log()</name>
+      <name since="">stop_log()</name>
       <fsummary>Stops logging to file.</fsummary>
       <desc>
         <p>Closes the log file. The output from the RB tool is
diff --git a/lib/sasl/doc/src/release_handler.xml b/lib/sasl/doc/src/release_handler.xml
index 9ba276aeac..f8ee0306d8 100644
--- a/lib/sasl/doc/src/release_handler.xml
+++ b/lib/sasl/doc/src/release_handler.xml
@@ -28,7 +28,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>release_handler</module>
+  <module since="">release_handler</module>
   <modulesummary>Unpacking and Installation of Release Packages</modulesummary>
   <description>
     <p>The <em>release handler</em> process belongs to the SASL
@@ -168,8 +168,8 @@
 
   <funcs>
     <func>
-      <name>check_install_release(Vsn) -> {ok, OtherVsn, Descr} | {error, Reason}</name>
-      <name>check_install_release(Vsn,Opts) -> {ok, OtherVsn, Descr} | {error, Reason}</name>
+      <name since="">check_install_release(Vsn) -> {ok, OtherVsn, Descr} | {error, Reason}</name>
+      <name since="OTP R14B04">check_install_release(Vsn,Opts) -> {ok, OtherVsn, Descr} | {error, Reason}</name>
       <fsummary>Checks installation of a release in the system.</fsummary>
       <type>
         <v>Vsn = OtherVsn = string()</v>
@@ -202,7 +202,7 @@
     </func>
 
     <func>
-      <name>create_RELEASES(Root, RelDir, RelFile, AppDirs) -> ok | {error, Reason}</name>
+      <name since="">create_RELEASES(Root, RelDir, RelFile, AppDirs) -> ok | {error, Reason}</name>
       <fsummary>Creates an initial <c>RELEASES</c> file.</fsummary>
       <type>
         <v>Root = RelDir = RelFile = string()</v>
@@ -233,7 +233,7 @@
     </func>
 
     <func>
-      <name>install_file(Vsn, File) -> ok | {error, Reason}</name>
+      <name since="">install_file(Vsn, File) -> ok | {error, Reason}</name>
       <fsummary>Installs a release file in the release structure.</fsummary>
       <type>
         <v>Vsn = File = string()</v>
@@ -252,8 +252,8 @@
     </func>
 
     <func>
-      <name>install_release(Vsn) -> {ok, OtherVsn, Descr} | {error, Reason}</name>
-      <name>install_release(Vsn, [Opt]) -> {ok, OtherVsn, Descr} | {continue_after_restart, OtherVsn, Descr} | {error, Reason}</name>
+      <name since="">install_release(Vsn) -> {ok, OtherVsn, Descr} | {error, Reason}</name>
+      <name since="">install_release(Vsn, [Opt]) -> {ok, OtherVsn, Descr} | {continue_after_restart, OtherVsn, Descr} | {error, Reason}</name>
       <fsummary>Installs a release in the system.</fsummary>
       <type>
         <v>Vsn = OtherVsn = string()</v>
@@ -383,7 +383,7 @@ release_handler:set_unpacked(RelFile, [{myapp,"1.0","/home/user"},...]).
     </func>
 
     <func>
-      <name>make_permanent(Vsn) -> ok | {error, Reason}</name>
+      <name since="">make_permanent(Vsn) -> ok | {error, Reason}</name>
       <fsummary>Makes the specified release version permanent.</fsummary>
       <type>
         <v>Vsn = string()</v>
@@ -396,7 +396,7 @@ release_handler:set_unpacked(RelFile, [{myapp,"1.0","/home/user"},...]).
     </func>
 
     <func>
-      <name>remove_release(Vsn) -> ok | {error, Reason}</name>
+      <name since="">remove_release(Vsn) -> ok | {error, Reason}</name>
       <fsummary>Removes a release from the system.</fsummary>
       <type>
         <v>Vsn = string()</v>
@@ -410,7 +410,7 @@ release_handler:set_unpacked(RelFile, [{myapp,"1.0","/home/user"},...]).
 
     </func>
     <func>
-      <name>reboot_old_release(Vsn) -> ok | {error, Reason}</name>
+      <name since="">reboot_old_release(Vsn) -> ok | {error, Reason}</name>
       <fsummary>Reboots the system from an old release.</fsummary>
       <type>
         <v>Vsn = string()</v>
@@ -425,7 +425,7 @@ release_handler:set_unpacked(RelFile, [{myapp,"1.0","/home/user"},...]).
     </func>
 
     <func>
-      <name>set_removed(Vsn) -> ok | {error, Reason}</name>
+      <name since="">set_removed(Vsn) -> ok | {error, Reason}</name>
       <fsummary>Marks a release as removed.</fsummary>
       <type>
         <v>Vsn = string()</v>
@@ -440,7 +440,7 @@ release_handler:set_unpacked(RelFile, [{myapp,"1.0","/home/user"},...]).
     </func>
 
     <func>
-      <name>set_unpacked(RelFile, AppDirs) -> {ok, Vsn} | {error, Reason}</name>
+      <name since="">set_unpacked(RelFile, AppDirs) -> {ok, Vsn} | {error, Reason}</name>
       <fsummary>Marks a release as unpacked.</fsummary>
       <type>
         <v>RelFile = string()</v>
@@ -466,7 +466,7 @@ release_handler:set_unpacked(RelFile, [{myapp,"1.0","/home/user"},...]).
     </func>
 
     <func>
-      <name>unpack_release(Name) -> {ok, Vsn} | {error, Reason}</name>
+      <name since="">unpack_release(Name) -> {ok, Vsn} | {error, Reason}</name>
       <fsummary>Unpacks a release package.</fsummary>
       <type>
         <v>Name = Vsn = string()</v>
@@ -482,7 +482,7 @@ release_handler:set_unpacked(RelFile, [{myapp,"1.0","/home/user"},...]).
     </func>
 
     <func>
-      <name>which_releases() -> [{Name, Vsn, Apps, Status}]</name>
+      <name since="">which_releases() -> [{Name, Vsn, Apps, Status}]</name>
       <fsummary>Returns all known releases.</fsummary>
       <type>
         <v>Name = Vsn = string()</v>
@@ -495,7 +495,7 @@ release_handler:set_unpacked(RelFile, [{myapp,"1.0","/home/user"},...]).
     </func>
 
     <func>
-      <name>which_releases(Status) -> [{Name, Vsn, Apps, Status}]</name>
+      <name since="OTP R15B">which_releases(Status) -> [{Name, Vsn, Apps, Status}]</name>
       <fsummary>Returns all known releases of a specific status.</fsummary>
       <type>
         <v>Name = Vsn = string()</v>
@@ -537,7 +537,7 @@ release_handler:set_unpacked(RelFile, [{myapp,"1.0","/home/user"},...]).
 
   <funcs>
     <func>
-      <name>upgrade_app(App, Dir) -> {ok, Unpurged} | restart_emulator | {error, Reason}</name>
+      <name since="">upgrade_app(App, Dir) -> {ok, Unpurged} | restart_emulator | {error, Reason}</name>
       <fsummary>Upgrades to a new application version.</fsummary>
       <type>
         <v>App = atom()</v>
@@ -586,8 +586,8 @@ release_handler:set_unpacked(RelFile, [{myapp,"1.0","/home/user"},...]).
     </func>
 
     <func>
-      <name>downgrade_app(App, Dir) -></name>
-      <name>downgrade_app(App, OldVsn, Dir) -> {ok, Unpurged} | restart_emulator | {error, Reason}</name>
+      <name since="">downgrade_app(App, Dir) -></name>
+      <name since="">downgrade_app(App, OldVsn, Dir) -> {ok, Unpurged} | restart_emulator | {error, Reason}</name>
       <fsummary>Downgrades to a previous application version.</fsummary>
       <type>
         <v>App = atom()</v>
@@ -633,7 +633,7 @@ release_handler:set_unpacked(RelFile, [{myapp,"1.0","/home/user"},...]).
     </func>
 
     <func>
-      <name>upgrade_script(App, Dir) -> {ok, NewVsn, Script}</name>
+      <name since="">upgrade_script(App, Dir) -> {ok, NewVsn, Script}</name>
       <fsummary>Finds an application upgrade script.</fsummary>
       <type>
         <v>App = atom()</v>
@@ -671,7 +671,7 @@ release_handler:set_unpacked(RelFile, [{myapp,"1.0","/home/user"},...]).
     </func>
 
     <func>
-      <name>downgrade_script(App, OldVsn, Dir) -> {ok, Script}</name>
+      <name since="">downgrade_script(App, OldVsn, Dir) -> {ok, Script}</name>
       <fsummary>Finds an application downgrade script.</fsummary>
       <type>
         <v>App = atom()</v>
@@ -710,7 +710,7 @@ release_handler:set_unpacked(RelFile, [{myapp,"1.0","/home/user"},...]).
     </func>
 
     <func>
-      <name>eval_appup_script(App, ToVsn, ToDir, Script) -> {ok, Unpurged} | restart_emulator | {error, Reason}</name>
+      <name since="">eval_appup_script(App, ToVsn, ToDir, Script) -> {ok, Unpurged} | restart_emulator | {error, Reason}</name>
       <fsummary>Evaluates an application upgrade or downgrade script.</fsummary>
       <type>
         <v>App = atom()</v>
diff --git a/lib/sasl/doc/src/systools.xml b/lib/sasl/doc/src/systools.xml
index 4842c732b1..6facb8ddae 100644
--- a/lib/sasl/doc/src/systools.xml
+++ b/lib/sasl/doc/src/systools.xml
@@ -30,7 +30,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>systools</module>
+  <module since="">systools</module>
   <modulesummary>A Set of Release Handling Tools</modulesummary>
   <description>
     <p>This module contains functions to generate boot scripts
@@ -40,8 +40,8 @@
 
   <funcs>
     <func>
-      <name>make_relup(Name, UpFrom, DownTo) -> Result</name>
-      <name>make_relup(Name, UpFrom, DownTo, [Opt]) -> Result</name>
+      <name since="">make_relup(Name, UpFrom, DownTo) -> Result</name>
+      <name since="">make_relup(Name, UpFrom, DownTo, [Opt]) -> Result</name>
       <fsummary>Generates a release upgrade file <c>relup</c>.</fsummary>
       <type>
         <v>Name = string()</v>
@@ -136,8 +136,8 @@
     </func>
 
     <func>
-      <name>make_script(Name) -> Result</name>
-      <name>make_script(Name, [Opt]) -> Result</name>
+      <name since="">make_script(Name) -> Result</name>
+      <name since="">make_script(Name, [Opt]) -> Result</name>
       <fsummary>Generates a boot script <c>.script/.boot</c>.</fsummary>
       <type>
         <v>Name = string()</v>
@@ -263,8 +263,8 @@
     </func>
 
     <func>
-      <name>make_tar(Name) -> Result</name>
-      <name>make_tar(Name, [Opt]) -> Result</name>
+      <name since="">make_tar(Name) -> Result</name>
+      <name since="">make_tar(Name, [Opt]) -> Result</name>
       <fsummary>Creates a release package.</fsummary>
       <type>
         <v>Name = string()</v>
@@ -369,7 +369,7 @@ myapp-1/ebin/myapp.app
     </func>
 
     <func>
-      <name>script2boot(File) -> ok | error</name>
+      <name since="">script2boot(File) -> ok | error</name>
       <fsummary>Generates a binary version of a boot script.</fsummary>
       <type>
         <v>File = string()</v>
diff --git a/lib/sasl/src/rb.erl b/lib/sasl/src/rb.erl
index 28829132a1..bef4268d3a 100644
--- a/lib/sasl/src/rb.erl
+++ b/lib/sasl/src/rb.erl
@@ -890,7 +890,7 @@ read_rep(Fd, FilePosition, Device, Abort, Log) ->
     
 handle_bad_form(Date, Msg, Device, Abort, Log) ->
     io:format("rb: ERROR! A report on bad form was encountered. " ++
-	      "It can not be printed to the log.~n~n"),
+	      "It cannot be printed to the log.~n~n"),
     io:format("Details:~n~p ~tp~n~n", [Date,Msg]),
     case {Abort,Device,open_log_file(Log)} of
 	{true,standard_io,standard_io} ->
diff --git a/lib/sasl/src/release_handler.erl b/lib/sasl/src/release_handler.erl
index 7570b74c1a..48feac1a21 100644
--- a/lib/sasl/src/release_handler.erl
+++ b/lib/sasl/src/release_handler.erl
@@ -1120,7 +1120,7 @@ new_emulator_make_hybrid_config(CurrentVsn,ToVsn,TmpVsn,RelDir,Masters) ->
 	    {ok,[FC]} ->
 		FC;
 	    {error,Error1} ->
-		io:format("Warning: ~w can not read ~tp: ~tp~n",
+		io:format("Warning: ~w cannot read ~tp: ~tp~n",
 			  [?MODULE,FromFile,Error1]),
 		[]
 	end,
@@ -1130,7 +1130,7 @@ new_emulator_make_hybrid_config(CurrentVsn,ToVsn,TmpVsn,RelDir,Masters) ->
 	    {ok,[ToConfig]} ->
 		[lists:keyfind(App,1,ToConfig) || App <- [kernel,stdlib,sasl]];
 	    {error,Error2} ->
-		io:format("Warning: ~w can not read ~tp: ~tp~n",
+		io:format("Warning: ~w cannot read ~tp: ~tp~n",
 			  [?MODULE,ToFile,Error2]),
 		[false,false,false]
 	end,
diff --git a/lib/sasl/src/release_handler_1.erl b/lib/sasl/src/release_handler_1.erl
index ca97515299..bf18691687 100644
--- a/lib/sasl/src/release_handler_1.erl
+++ b/lib/sasl/src/release_handler_1.erl
@@ -147,7 +147,7 @@ split_instructions([], Before) ->
 %%          If PrePurgeMethod == soft_purge, the function will succeed
 %%          only if there is no process running old code of any of the
 %%          modules. Else it will throw {error,Mod}, where Mod is the
-%%          first module found that can not be soft_purged.
+%%          first module found that cannot be soft_purged.
 %%
 %%          If PrePurgeMethod == brutal_purge, the function will
 %%          always succeed and return a list of all modules that are
diff --git a/lib/sasl/src/systools.erl b/lib/sasl/src/systools.erl
index dd1a58c3c1..34eca6679f 100644
--- a/lib/sasl/src/systools.erl
+++ b/lib/sasl/src/systools.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2019. All Rights Reserved.
 %% 
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -73,7 +73,7 @@ make_tar(RelName, Opt) ->
 script2boot(File) ->
     case systools_lib:file_term2binary(File ++ ".script", File ++ ".boot") of
 	{error,Error} ->
-	    io:format(systools_make:format_error(Error)),
+	    io:format("~ts", [systools_make:format_error(Error)]),
 	    error;
 	_ ->
 	    ok
@@ -84,7 +84,7 @@ script2boot(File, Output0, _Opt) ->
     Output = Output0++".boot",
     case systools_lib:file_term2binary(Input, Output) of
 	{error,Error} ->
-	    io:format(systools_make:format_error(Error)),
+	    io:format("~ts", [systools_make:format_error(Error)]),
 	    error;
 	_ ->
 	    ok
diff --git a/lib/sasl/src/systools_make.erl b/lib/sasl/src/systools_make.erl
index f085246924..c2c91fd667 100644
--- a/lib/sasl/src/systools_make.erl
+++ b/lib/sasl/src/systools_make.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1996-2018. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2019. All Rights Reserved.
 %% 
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -1562,11 +1562,11 @@ mandatory_modules() ->
 
 preloaded() ->
     %% Sorted
-    [atomics, counters, erl_prim_loader,erl_tracer,erlang,
+    [atomics,counters,erl_init,erl_prim_loader,erl_tracer,erlang,
      erts_code_purger,erts_dirty_process_signal_handler,
      erts_internal,erts_literal_area_collector,
-     init,otp_ring0,persistent_term,prim_buffer,prim_eval,prim_file,
-     prim_inet,prim_zip,zlib].
+     init,net,persistent_term,prim_buffer,prim_eval,prim_file,
+     prim_inet,prim_zip,socket,zlib].
 
 %%______________________________________________________________________
 %% Kernel processes; processes that are specially treated by the init
diff --git a/lib/sasl/src/systools_relup.erl b/lib/sasl/src/systools_relup.erl
index e836d57670..5f1176ec69 100644
--- a/lib/sasl/src/systools_relup.erl
+++ b/lib/sasl/src/systools_relup.erl
@@ -587,7 +587,7 @@ default(warnings_as_errors) -> false.
 
 print_error({error, Mod, Error}) ->
     S = apply(Mod, format_error, [Error]),
-    io:format(S, []);
+    io:format("~ts", [S]);
 print_error(Other) ->
     io:format("Error: ~tp~n", [Other]).
 
diff --git a/lib/sasl/test/installer.erl b/lib/sasl/test/installer.erl
index e38d0cfa7b..5429008a5f 100644
--- a/lib/sasl/test/installer.erl
+++ b/lib/sasl/test/installer.erl
@@ -905,7 +905,7 @@ start_client(TestNode,Client,Sname) ->
             wait_started(TestNode,Node)
     after 30000 ->
 	    ?print([{start_client,failed,Node},net_adm:ping(Node)]),
-            ?fail({"can not start", Node})
+            ?fail({"cannot start", Node})
     end.
 
 start_client_unix(TestNode,Sname,Node) ->
diff --git a/lib/sasl/test/rb_SUITE.erl b/lib/sasl/test/rb_SUITE.erl
index 2b6e452d14..e5ca1775d5 100644
--- a/lib/sasl/test/rb_SUITE.erl
+++ b/lib/sasl/test/rb_SUITE.erl
@@ -423,7 +423,7 @@ start_stop_log(Config) ->
     StdioResult2 = capture(fun() -> rb:log_list() end),
     {ok,<<>>} = file:read_file(OutFile),
     
-    %% Test that standard_io is used if log file can not be opened
+    %% Test that standard_io is used if log file cannot be opened
     ok = rb:start_log(filename:join(nonexistingdir,"newfile.txt")),
     StdioResult = capture(fun() -> rb:show(1) end),
     {ok,<<>>} = file:read_file(OutFile),
diff --git a/lib/sasl/test/systools_SUITE.erl b/lib/sasl/test/systools_SUITE.erl
index 1827974866..6c913850b9 100644
--- a/lib/sasl/test/systools_SUITE.erl
+++ b/lib/sasl/test/systools_SUITE.erl
@@ -1654,7 +1654,7 @@ abnormal_relup(Config) when is_list(Config) ->
     ok.
 
 
-%% make_relup: Check relup can not be created is sasl is not in rel file.
+%% make_relup: Check relup cannot be created is sasl is not in rel file.
 no_sasl_relup(Config) when is_list(Config) ->
     {ok, OldDir} = file:get_cwd(),
     {Dir1,Name1} = create_script(latest1_no_sasl,Config),
diff --git a/lib/sasl/test/test_lib.hrl b/lib/sasl/test/test_lib.hrl
index f5210d4f27..7867d3da39 100644
--- a/lib/sasl/test/test_lib.hrl
+++ b/lib/sasl/test/test_lib.hrl
@@ -1,3 +1,3 @@
 -define(ertsvsn,"4.4").
--define(kernelvsn,"5.3").
--define(stdlibvsn,"3.4").
+-define(kernelvsn,"6.0").
+-define(stdlibvsn,"3.5").
diff --git a/lib/snmp/doc/src/snmp.xml b/lib/snmp/doc/src/snmp.xml
index 480ed2e825..d20f1a8d06 100644
--- a/lib/snmp/doc/src/snmp.xml
+++ b/lib/snmp/doc/src/snmp.xml
@@ -32,7 +32,7 @@
     <rev></rev>
     <file>snmp.xml</file>
   </header>
-  <module>snmp</module>
+  <module since="">snmp</module>
   <modulesummary>Interface functions to the SNMP toolkit</modulesummary>
   <description>
     <p>The module <c>snmp</c> contains interface functions to the 
@@ -56,7 +56,7 @@
 
   <funcs>
     <func>
-      <name>config() -> ok | {error, Reason}</name>
+      <name since="">config() -> ok | {error, Reason}</name>
       <fsummary>Configure with a simple interactive tool</fsummary>
       <desc>
         <p>A simple interactive configuration tool. Simple
@@ -78,8 +78,8 @@
     </func>
 
     <func>
-      <name>start() -> ok | {error, Reason}</name>
-      <name>start(Type) -> ok | {error, Reason}</name>
+      <name since="">start() -> ok | {error, Reason}</name>
+      <name since="">start(Type) -> ok | {error, Reason}</name>
       <fsummary>Start the SNMP application</fsummary>
       <type>
         <v>Type = start_type()</v>
@@ -93,8 +93,8 @@
     </func>
 
     <func>
-      <name>start_agent() -> ok | {error, Reason}</name>
-      <name>start_agent(Type) -> ok | {error, Reason}</name>
+      <name since="">start_agent() -> ok | {error, Reason}</name>
+      <name since="">start_agent(Type) -> ok | {error, Reason}</name>
       <fsummary>Start the agent part of the SNMP application</fsummary>
       <type>
         <v>Type = start_type()</v>
@@ -117,8 +117,8 @@
     </func>
 
     <func>
-      <name>start_manager() -> ok | {error, Reason}</name>
-      <name>start_manager(Type) -> ok | {error, Reason}</name>
+      <name since="">start_manager() -> ok | {error, Reason}</name>
+      <name since="">start_manager(Type) -> ok | {error, Reason}</name>
       <fsummary>Start the manager part of the SNMP application</fsummary>
       <type>
         <v>Type = start_type()</v>
@@ -141,7 +141,7 @@
     </func>
 
     <func>
-      <name>date_and_time() -> DateAndTime</name>
+      <name since="">date_and_time() -> DateAndTime</name>
       <fsummary>Return the current date and time as an OCTET STRING</fsummary>
       <type>
         <v>DateAndTime = [int()]</v>
@@ -155,7 +155,7 @@
     </func>
 
     <func>
-      <name>date_and_time_to_universal_time_dst(DateAndTime) -> [utc()]</name>
+      <name since="">date_and_time_to_universal_time_dst(DateAndTime) -> [utc()]</name>
       <fsummary>Convert a DateAndTime value to a list of possible utc()</fsummary>
       <type>
         <v>DateAndTime = [int()]</v>
@@ -171,8 +171,8 @@
     </func>
 
     <func>
-      <name>date_and_time_to_string(DateAndTime) -> string()</name>
-      <name>date_and_time_to_string(DateAndTime, Validate) -> string()</name>
+      <name since="">date_and_time_to_string(DateAndTime) -> string()</name>
+      <name since="">date_and_time_to_string(DateAndTime, Validate) -> string()</name>
       <fsummary>Convert a DateAndTime value to a string</fsummary>
       <type>
         <v>DateAndTime = [int()]</v>
@@ -194,7 +194,7 @@
     </func>
 
     <func>
-      <name>date_and_time_to_string2(DateAndTime) -> string()</name>
+      <name since="">date_and_time_to_string2(DateAndTime) -> string()</name>
       <fsummary>Convert a DateAndTime value to a string</fsummary>
       <type>
         <v>DateAndTime = [int()]</v>
@@ -210,7 +210,7 @@
     </func>
 
     <func>
-      <name>local_time_to_date_and_time_dst(Local) -> [DateAndTime]</name>
+      <name since="">local_time_to_date_and_time_dst(Local) -> [DateAndTime]</name>
       <fsummary>Convert a Local time value to a list of possible DateAndTime(s)</fsummary>
       <type>
         <v>Local = {{Y,Mo,D},{H,M,S}}</v>
@@ -226,7 +226,7 @@
     </func>
 
     <func>
-      <name>universal_time_to_date_and_time(UTC) -> DateAndTime</name>
+      <name since="">universal_time_to_date_and_time(UTC) -> DateAndTime</name>
       <fsummary>Convert a UTC value to DateAndTime</fsummary>
       <type>
         <v>UTC = {{Y,Mo,D},{H,M,S}}</v>
@@ -241,8 +241,8 @@
     </func>
 
     <func>
-      <name>validate_date_and_time(DateAndTime) -> bool()</name>
-      <name>validate_date_and_time(DateAndTime, Validate) -> bool()</name>
+      <name since="">validate_date_and_time(DateAndTime) -> bool()</name>
+      <name since="">validate_date_and_time(DateAndTime, Validate) -> bool()</name>
       <fsummary>Check if a DateAndTime value is correct</fsummary>
       <type>
         <v>DateAndTime = term()</v>
@@ -279,7 +279,7 @@
     </func>
 
     <func>
-      <name>passwd2localized_key(Alg, Passwd, EngineID) -> Key</name>
+      <name since="">passwd2localized_key(Alg, Passwd, EngineID) -> Key</name>
       <fsummary>Generates an localized key</fsummary>
       <type>
         <v>Alg = algorithm()</v>
@@ -298,7 +298,7 @@
     </func>
 
     <func>
-      <name>octet_string_to_bits(S) -> Val</name>
+      <name since="">octet_string_to_bits(S) -> Val</name>
       <fsummary>Convert an OCTET-STRING to BITS</fsummary>
       <type>
         <v>Val = bits()</v>
@@ -312,7 +312,7 @@
     </func>
 
     <func>
-      <name>bits_to_octet_string(B) -> Val</name>
+      <name since="">bits_to_octet_string(B) -> Val</name>
       <fsummary>Convert an OCTET-STRING to BITS</fsummary>
       <type>
         <v>Val = octet_string()</v>
@@ -326,7 +326,7 @@
     </func>
 
     <func>
-      <name>read_mib(FileName) -> {ok, mib()} | {error, Reason}</name>
+      <name since="">read_mib(FileName) -> {ok, mib()} | {error, Reason}</name>
       <fsummary></fsummary>
       <type>
         <v>FileName = string()</v>
@@ -341,10 +341,10 @@
     </func>
 
     <func>
-      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile) ->  ok | {ok, Cnt} | {error, Reason}</name>
-      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block | Start) ->  ok | {ok, Cnt} | {error, Reason}</name>
-      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Start, Block | Stop) -> ok | {ok, Cnt} | {error, Reason}</name>
-      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Start, Stop, Block) -> ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="">log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile) ->  ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="">log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block | Start) ->  ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="">log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Start, Block | Stop) -> ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="OTP R16B03">log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Start, Stop, Block) -> ok | {ok, Cnt} | {error, Reason}</name>
       <fsummary>Convert an Audit Trail Log to text format</fsummary>
       <type>
         <v>LogDir = string()</v>
@@ -412,10 +412,10 @@
     </func>
 
     <func>
-      <name>log_to_io(LogDir, Mibs, LogName, LogFile) ->  ok | {ok, Cnt} | {error, Reason}</name>
-      <name>log_to_io(LogDir, Mibs, LogName, LogFile, Block | Start) ->  ok | {ok, Cnt} | {error, Reason}</name>
-      <name>log_to_io(LogDir, Mibs, LogName, LogFile, Start, Block | Stop) -> ok | {ok, Cnt} | {error, Reason}</name>
-      <name>log_to_io(LogDir, Mibs, LogName, LogFile, Start, Stop, Block) -> ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="OTP R15B01">log_to_io(LogDir, Mibs, LogName, LogFile) ->  ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="OTP R15B01">log_to_io(LogDir, Mibs, LogName, LogFile, Block | Start) ->  ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="OTP R15B01">log_to_io(LogDir, Mibs, LogName, LogFile, Start, Block | Stop) -> ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="OTP R16B03">log_to_io(LogDir, Mibs, LogName, LogFile, Start, Stop, Block) -> ok | {ok, Cnt} | {error, Reason}</name>
       <fsummary>Convert an Audit Trail Log to text format</fsummary>
       <type>
         <v>LogDir = string()</v>
@@ -440,7 +440,7 @@
     </func>
 
     <func>
-      <name>change_log_size(LogName, NewSize) -> ok | {error, Reason}</name>
+      <name since="">change_log_size(LogName, NewSize) -> ok | {error, Reason}</name>
       <fsummary>Change the size of the Audit Trail Log</fsummary>
       <type>
         <v>LogName = string()</v>
@@ -463,8 +463,8 @@
     </func>
 
     <func>
-      <name>print_version_info() -> void()</name>
-      <name>print_version_info(Prefix) -> void()</name>
+      <name since="">print_version_info() -> void()</name>
+      <name since="">print_version_info(Prefix) -> void()</name>
       <fsummary>Formatted print of result of the versions functions</fsummary>
       <type>
         <v>Prefix = string() | integer()</v>
@@ -484,8 +484,8 @@
     </func>
 
     <func>
-      <name>versions1() -> {ok, Info} | {error, Reason}</name>
-      <name>versions2() -> {ok, Info} | {error, Reason}</name>
+      <name since="">versions1() -> {ok, Info} | {error, Reason}</name>
+      <name since="">versions2() -> {ok, Info} | {error, Reason}</name>
       <fsummary>Retrieve various system and application info</fsummary>
       <type>
         <v>Info = [info()]</v>
@@ -504,8 +504,8 @@
     </func>
 
     <func>
-      <name>print_versions(VersionInfo) -> void()</name>
-      <name>print_versions(Prefix, VersionInfo) -> void()</name>
+      <name since="">print_versions(VersionInfo) -> void()</name>
+      <name since="">print_versions(Prefix, VersionInfo) -> void()</name>
       <fsummary>Formatted print of result of the versions functions</fsummary>
       <type>
         <v>VersionInfo = [version_info()]</v>
@@ -527,7 +527,7 @@
     </func>
 
     <func>
-      <name>enable_trace() -> void()</name>
+      <name since="">enable_trace() -> void()</name>
       <fsummary>Starts a tracer</fsummary>
       <!--
       <type>
@@ -543,7 +543,7 @@
     </func>
 
     <func>
-      <name>disable_trace() -> void()</name>
+      <name since="">disable_trace() -> void()</name>
       <fsummary>Stop the tracer</fsummary>
       <!--
       <type>
@@ -558,7 +558,7 @@
     </func>
 
     <func>
-      <name>set_trace(Targets) -> void()</name>
+      <name since="">set_trace(Targets) -> void()</name>
       <fsummary>Set trace target</fsummary>
       <type>
         <v>Targets = target() | targets()</v>
@@ -582,7 +582,7 @@
     </func>
 
     <func>
-      <name>reset_trace(Targets) -> void()</name>
+      <name since="">reset_trace(Targets) -> void()</name>
       <fsummary>Reset trace target</fsummary>
       <type>
         <v>Targets = module() | modules()</v>
@@ -598,7 +598,7 @@
     </func>
 
     <func>
-      <name>set_trace(Targets, Opts) -> void()</name>
+      <name since="">set_trace(Targets, Opts) -> void()</name>
       <fsummary>Set trace target</fsummary>
       <type>
         <v>Targets = target() | targets()</v>
diff --git a/lib/snmp/doc/src/snmp_community_mib.xml b/lib/snmp/doc/src/snmp_community_mib.xml
index 61dea05950..9800fb6c00 100644
--- a/lib/snmp/doc/src/snmp_community_mib.xml
+++ b/lib/snmp/doc/src/snmp_community_mib.xml
@@ -32,7 +32,7 @@
     <rev></rev>
     <file>snmp_community_mib.xml</file>
   </header>
-  <module>snmp_community_mib</module>
+  <module since="">snmp_community_mib</module>
   <modulesummary>Instrumentation Functions for SNMP-COMMUNITY-MIB</modulesummary>
   <description>
     <p>The module <c>snmp_community_mib</c> implements the instrumentation
@@ -45,7 +45,7 @@
 
   <funcs>
     <func>
-      <name>configure(ConfDir) -> void()</name>
+      <name since="">configure(ConfDir) -> void()</name>
       <fsummary>Configure the SNMP-COMMUNITY-MIB</fsummary>
       <type>
         <v>ConfDir = string()</v>
@@ -77,7 +77,7 @@
     </func>
 
     <func>
-      <name>reconfigure(ConfDir) -> void()</name>
+      <name since="">reconfigure(ConfDir) -> void()</name>
       <fsummary>Configure the SNMP-COMMUNITY-MIB</fsummary>
       <type>
         <v>ConfDir = string()</v>
@@ -108,8 +108,8 @@
     </func>
 
     <func>
-      <name>add_community(Idx, CommName, SecName, CtxName, TransportTag) -> Ret</name>
-      <name>add_community(Idx, CommName, SecName, EngineId, CtxName, TransportTag) -> Ret</name>
+      <name since="">add_community(Idx, CommName, SecName, CtxName, TransportTag) -> Ret</name>
+      <name since="OTP R14B03">add_community(Idx, CommName, SecName, EngineId, CtxName, TransportTag) -> Ret</name>
       <fsummary>Added one community</fsummary>
       <type>
         <v>Idx = string()</v>
@@ -132,7 +132,7 @@
     </func>
 
     <func>
-      <name>delete_community(Key) -> Ret</name>
+      <name since="">delete_community(Key) -> Ret</name>
       <fsummary>Delete one community</fsummary>
       <type>
         <v>Key = term()</v>
diff --git a/lib/snmp/doc/src/snmp_framework_mib.xml b/lib/snmp/doc/src/snmp_framework_mib.xml
index 64e5df6ff5..d84327d4d5 100644
--- a/lib/snmp/doc/src/snmp_framework_mib.xml
+++ b/lib/snmp/doc/src/snmp_framework_mib.xml
@@ -32,7 +32,7 @@
     <rev></rev>
     <file>snmp_framework_mib.xml</file>
   </header>
-  <module>snmp_framework_mib</module>
+  <module since="">snmp_framework_mib</module>
   <modulesummary>Instrumentation Functions for SNMP-FRAMEWORK-MIB</modulesummary>
   <description>
     <p>The module <c>snmp_framework_mib</c> implements instrumentation
@@ -44,7 +44,7 @@
   </description>
   <funcs>
     <func>
-      <name>configure(ConfDir) -> void()</name>
+      <name since="">configure(ConfDir) -> void()</name>
       <fsummary>Configure the SNMP-FRAMEWORK-MIB</fsummary>
       <type>
         <v>ConfDir = string()</v>
@@ -75,7 +75,7 @@
       </desc>
     </func>
     <func>
-      <name>init() -> void()</name>
+      <name since="">init() -> void()</name>
       <fsummary>Initialize the SNMP-FRAMEWORK-MIB</fsummary>
       <desc>
         <p>This function is called from the supervisor at system
@@ -88,7 +88,7 @@
       </desc>
     </func>
     <func>
-      <name>add_context(Ctx) -> Ret</name>
+      <name since="">add_context(Ctx) -> Ret</name>
       <fsummary>Added one context</fsummary>
       <type>
         <v>Ctx = string()</v>
@@ -103,7 +103,7 @@
       </desc>
     </func>
     <func>
-      <name>delete_context(Key) -> Ret</name>
+      <name since="">delete_context(Key) -> Ret</name>
       <fsummary>Delete one context</fsummary>
       <type>
         <v>Key = term()</v>
diff --git a/lib/snmp/doc/src/snmp_generic.xml b/lib/snmp/doc/src/snmp_generic.xml
index 44762dec59..6fb714907c 100644
--- a/lib/snmp/doc/src/snmp_generic.xml
+++ b/lib/snmp/doc/src/snmp_generic.xml
@@ -32,7 +32,7 @@
     <rev></rev>
     <file>snmp_generic.xml</file>
   </header>
-  <module>snmp_generic</module>
+  <module since="">snmp_generic</module>
   <modulesummary>Generic Functions for Implementing SNMP Objects in a Database</modulesummary>
   <description>
     <marker id="description"></marker>
@@ -127,8 +127,8 @@ value() = term()
 
   <funcs>
     <func>
-      <name>get_status_col(Name, Cols)</name>
-      <name>get_status_col(NameDb, Cols) -> {ok, StatusVal} | false</name>
+      <name since="">get_status_col(Name, Cols)</name>
+      <name since="">get_status_col(NameDb, Cols) -> {ok, StatusVal} | false</name>
       <fsummary>Get the value of the status column from <c>Cols</c></fsummary>
       <type>
         <v>Name = name()</v>
@@ -148,7 +148,7 @@ value() = term()
     </func>
 
     <func>
-      <name>get_index_types(Name)</name>
+      <name since="">get_index_types(Name)</name>
       <fsummary>Get the index types of <c>Name</c></fsummary>
       <type>
         <v>Name = name()</v>
@@ -163,7 +163,7 @@ value() = term()
     </func>
 
     <func>
-      <name>get_table_info(Name, Item) -> table_info_result()</name>
+      <name since="OTP R15B01">get_table_info(Name, Item) -> table_info_result()</name>
       <fsummary>Get table info item of MIB table <c>Name</c></fsummary>
       <type>
         <v>Name = name()</v>
@@ -187,8 +187,8 @@ value() = term()
     </func>
 
     <func>
-      <name>table_func(Op1, NameDb)</name>
-      <name>table_func(Op2, RowIndex, Cols, NameDb) -> Ret</name>
+      <name since="">table_func(Op1, NameDb)</name>
+      <name since="">table_func(Op2, RowIndex, Cols, NameDb) -> Ret</name>
       <fsummary>Default instrumentation function for tables</fsummary>
       <type>
         <v>Op1 = new | delete </v>
@@ -232,7 +232,7 @@ value() = term()
     </func>
 
     <func>
-      <name>table_get_elements(NameDb, RowIndex, Cols) -> Values</name>
+      <name since="">table_get_elements(NameDb, RowIndex, Cols) -> Values</name>
       <fsummary>Get elements in a table row</fsummary>
       <type>
         <v>NameDb = name_db()</v>
@@ -249,7 +249,7 @@ value() = term()
     </func>
 
     <func>
-      <name>table_next(NameDb, RestOid) -> RowIndex | endOfTable</name>
+      <name since="">table_next(NameDb, RestOid) -> RowIndex | endOfTable</name>
       <fsummary>Find the next row in the table</fsummary>
       <type>
         <v>NameDb = name_db()</v>
@@ -265,7 +265,7 @@ value() = term()
     </func>
 
     <func>
-      <name>table_row_exists(NameDb, RowIndex) -> bool()</name>
+      <name since="">table_row_exists(NameDb, RowIndex) -> bool()</name>
       <fsummary>Check if a row in a table exists</fsummary>
       <type>
         <v>NameDb = name_db()</v>
@@ -279,7 +279,7 @@ value() = term()
     </func>
 
     <func>
-      <name>table_set_elements(NameDb, RowIndex, Cols) -> bool()</name>
+      <name since="">table_set_elements(NameDb, RowIndex, Cols) -> bool()</name>
       <fsummary>Set elements in a table row</fsummary>
       <type>
         <v>NameDb = name_db()</v>
@@ -300,8 +300,8 @@ value() = term()
     </func>
 
     <func>
-      <name>variable_func(Op1, NameDb)</name>
-      <name>variable_func(Op2, Val, NameDb) -> Ret</name>
+      <name since="">variable_func(Op1, NameDb)</name>
+      <name since="">variable_func(Op2, Val, NameDb) -> Ret</name>
       <fsummary>Default instrumentation function for tables</fsummary>
       <type>
         <v>Op1 = new | delete | get</v>
@@ -325,7 +325,7 @@ value() = term()
     </func>
 
     <func>
-      <name>variable_get(NameDb) -> {value, Value} | undefined</name>
+      <name since="">variable_get(NameDb) -> {value, Value} | undefined</name>
       <fsummary>Get the value of a variable</fsummary>
       <type>
         <v>NameDb = name_db()</v>
@@ -339,7 +339,7 @@ value() = term()
     </func>
 
     <func>
-      <name>variable_set(NameDb, NewVal) -> true | false</name>
+      <name since="">variable_set(NameDb, NewVal) -> true | false</name>
       <fsummary>Set a value for a variable</fsummary>
       <type>
         <v>NameDb = name_db()</v>
diff --git a/lib/snmp/doc/src/snmp_index.xml b/lib/snmp/doc/src/snmp_index.xml
index 646e9661a3..1497f4cf67 100644
--- a/lib/snmp/doc/src/snmp_index.xml
+++ b/lib/snmp/doc/src/snmp_index.xml
@@ -32,7 +32,7 @@
     <rev></rev>
     <file>snmp_index.xml</file>
   </header>
-  <module>snmp_index</module>
+  <module since="">snmp_index</module>
   <modulesummary>Abstract Data Type for SNMP Indexing</modulesummary>
   <description>
     <p>The module <c>snmp_index</c> implements an Abstract
@@ -159,7 +159,7 @@ get_next_pid(Oid, SnmpIndex) ->
   </section>
   <funcs>
     <func>
-      <name>delete(Index) -> true</name>
+      <name since="">delete(Index) -> true</name>
       <fsummary>Delete an index table</fsummary>
       <type>
         <v>Index = NewIndex = index()</v>
@@ -173,7 +173,7 @@ get_next_pid(Oid, SnmpIndex) ->
       </desc>
     </func>
     <func>
-      <name>delete(Index, Key) -> NewIndex</name>
+      <name since="">delete(Index, Key) -> NewIndex</name>
       <fsummary>Delete an item from the index</fsummary>
       <type>
         <v>Index = NewIndex = index()</v>
@@ -185,7 +185,7 @@ get_next_pid(Oid, SnmpIndex) ->
       </desc>
     </func>
     <func>
-      <name>get(Index, KeyOid) -> {ok, {KeyOid, Value}} | undefined</name>
+      <name since="">get(Index, KeyOid) -> {ok, {KeyOid, Value}} | undefined</name>
       <fsummary>Get the item with <c>KeyOid</c></fsummary>
       <type>
         <v>Index = index()</v>
@@ -198,7 +198,7 @@ get_next_pid(Oid, SnmpIndex) ->
       </desc>
     </func>
     <func>
-      <name>get_last(Index) -> {ok, {KeyOid, Value}} | undefined</name>
+      <name since="">get_last(Index) -> {ok, {KeyOid, Value}} | undefined</name>
       <fsummary>Get the last item in the index structure</fsummary>
       <type>
         <v>Index = index()</v>
@@ -210,7 +210,7 @@ get_next_pid(Oid, SnmpIndex) ->
       </desc>
     </func>
     <func>
-      <name>get_next(Index, KeyOid) -> {ok, {NextKeyOid, Value}} | undefined</name>
+      <name since="">get_next(Index, KeyOid) -> {ok, {NextKeyOid, Value}} | undefined</name>
       <fsummary>Get the next item</fsummary>
       <type>
         <v>Index = index()</v>
@@ -224,7 +224,7 @@ get_next_pid(Oid, SnmpIndex) ->
       </desc>
     </func>
     <func>
-      <name>insert(Index, Key, Value) -> NewIndex</name>
+      <name since="">insert(Index, Key, Value) -> NewIndex</name>
       <fsummary>Insert an item into the index</fsummary>
       <type>
         <v>Index = NewIndex = index()</v>
@@ -238,7 +238,7 @@ get_next_pid(Oid, SnmpIndex) ->
       </desc>
     </func>
     <func>
-      <name>key_to_oid(Index, Key) -> KeyOid</name>
+      <name since="">key_to_oid(Index, Key) -> KeyOid</name>
       <fsummary>Convert a key to an OBJECT IDENTIFIER</fsummary>
       <type>
         <v>Index = index()</v>
@@ -250,7 +250,7 @@ get_next_pid(Oid, SnmpIndex) ->
       </desc>
     </func>
     <func>
-      <name>new(KeyTypes) -> Index</name>
+      <name since="">new(KeyTypes) -> Index</name>
       <fsummary>Create a new snmp index structure</fsummary>
       <type>
         <v>KeyTypes = key_types()</v>
diff --git a/lib/snmp/doc/src/snmp_notification_mib.xml b/lib/snmp/doc/src/snmp_notification_mib.xml
index d2e288ec15..9395edf155 100644
--- a/lib/snmp/doc/src/snmp_notification_mib.xml
+++ b/lib/snmp/doc/src/snmp_notification_mib.xml
@@ -32,7 +32,7 @@
     <rev></rev>
     <file>snmp_notification_mib.xml</file>
   </header>
-  <module>snmp_notification_mib</module>
+  <module since="">snmp_notification_mib</module>
   <modulesummary>Instrumentation Functions for SNMP-NOTIFICATION-MIB</modulesummary>
   <description>
     <p>The module <c>snmp_notification_mib</c> implements the
@@ -43,7 +43,7 @@
   </description>
   <funcs>
     <func>
-      <name>configure(ConfDir) -> void()</name>
+      <name since="">configure(ConfDir) -> void()</name>
       <fsummary>Configure the SNMP-NOTIFICATION-MIB</fsummary>
       <type>
         <v>ConfDir = string()</v>
@@ -70,7 +70,7 @@
       </desc>
     </func>
     <func>
-      <name>reconfigure(ConfDir) -> void()</name>
+      <name since="">reconfigure(ConfDir) -> void()</name>
       <fsummary>Configure the SNMP-NOTIFICATION-MIB</fsummary>
       <type>
         <v>ConfDir = string()</v>
@@ -98,7 +98,7 @@
       </desc>
     </func>
     <func>
-      <name>add_notify(Name, Tag, Type) -> Ret</name>
+      <name since="">add_notify(Name, Tag, Type) -> Ret</name>
       <fsummary>Added one notify definition</fsummary>
       <type>
         <v>Name = string()</v>
@@ -115,7 +115,7 @@
       </desc>
     </func>
     <func>
-      <name>delete_notify(Key) -> Ret</name>
+      <name since="">delete_notify(Key) -> Ret</name>
       <fsummary>Delete one notify definition</fsummary>
       <type>
         <v>Key = term()</v>
diff --git a/lib/snmp/doc/src/snmp_pdus.xml b/lib/snmp/doc/src/snmp_pdus.xml
index 1d086e6f48..f403b6edf4 100644
--- a/lib/snmp/doc/src/snmp_pdus.xml
+++ b/lib/snmp/doc/src/snmp_pdus.xml
@@ -32,7 +32,7 @@
     <rev></rev>
     <file>snmp_pdus.xml</file>
   </header>
-  <module>snmp_pdus</module>
+  <module since="">snmp_pdus</module>
   <modulesummary>Encode and Decode Functions for SNMP PDUs</modulesummary>
   <description>
     <p>RFC1157, RFC1905 and/or RFC2272 should be studied carefully
@@ -55,7 +55,7 @@
   </description>
   <funcs>
     <func>
-      <name>dec_message([byte()]) -> Message</name>
+      <name since="">dec_message([byte()]) -> Message</name>
       <fsummary>Decode an SNMP Message</fsummary>
       <type>
         <v>Message = #message</v>
@@ -71,7 +71,7 @@
       </desc>
     </func>
     <func>
-      <name>dec_message_only([byte()]) -> Message</name>
+      <name since="">dec_message_only([byte()]) -> Message</name>
       <fsummary>Decode an SNMP Message, but not the data part</fsummary>
       <type>
         <v>Message = #message</v>
@@ -84,7 +84,7 @@
       </desc>
     </func>
     <func>
-      <name>dec_pdu([byte()]) -> Pdu</name>
+      <name since="">dec_pdu([byte()]) -> Pdu</name>
       <fsummary>Decode an SNMP Pdu</fsummary>
       <type>
         <v>Pdu = #pdu</v>
@@ -94,7 +94,7 @@
       </desc>
     </func>
     <func>
-      <name>dec_scoped_pdu([byte()]) -> ScopedPdu</name>
+      <name since="">dec_scoped_pdu([byte()]) -> ScopedPdu</name>
       <fsummary>Decode an SNMP ScopedPdu</fsummary>
       <type>
         <v>ScopedPdu = #scoped_pdu</v>
@@ -104,7 +104,7 @@
       </desc>
     </func>
     <func>
-      <name>dec_scoped_pdu_data([byte()]) -> ScopedPduData</name>
+      <name since="">dec_scoped_pdu_data([byte()]) -> ScopedPduData</name>
       <fsummary>Decode an SNMP ScopedPduData</fsummary>
       <type>
         <v>ScopedPduData = #scoped_pdu | EncryptedPDU</v>
@@ -116,7 +116,7 @@
       </desc>
     </func>
     <func>
-      <name>dec_usm_security_parameters([byte()]) -> UsmSecParams</name>
+      <name since="">dec_usm_security_parameters([byte()]) -> UsmSecParams</name>
       <fsummary>Decode SNMP UsmSecurityParameters</fsummary>
       <type>
         <v>UsmSecParams = #usmSecurityParameters</v>
@@ -126,7 +126,7 @@
       </desc>
     </func>
     <func>
-      <name>enc_encrypted_scoped_pdu(EncryptedScopedPdu) -> [byte()]</name>
+      <name since="">enc_encrypted_scoped_pdu(EncryptedScopedPdu) -> [byte()]</name>
       <fsummary>Encode an encrypted SNMP scopedPDU</fsummary>
       <type>
         <v>EncryptedScopedPdu = [byte()]</v>
@@ -142,7 +142,7 @@
       </desc>
     </func>
     <func>
-      <name>enc_message(Message) -> [byte()]</name>
+      <name since="">enc_message(Message) -> [byte()]</name>
       <fsummary>Encode an SNMP Message</fsummary>
       <type>
         <v>Message = #message</v>
@@ -152,7 +152,7 @@
       </desc>
     </func>
     <func>
-      <name>enc_message_only(Message) -> [byte()]</name>
+      <name since="">enc_message_only(Message) -> [byte()]</name>
       <fsummary>Encode an SNMP Message, but not the data part</fsummary>
       <type>
         <v>Message = #message</v>
@@ -166,7 +166,7 @@
       </desc>
     </func>
     <func>
-      <name>enc_pdu(Pd) -> [byte()]</name>
+      <name since="">enc_pdu(Pd) -> [byte()]</name>
       <fsummary>Encode an SNMP Pdu</fsummary>
       <type>
         <v>Pdu = #pdu</v>
@@ -176,7 +176,7 @@
       </desc>
     </func>
     <func>
-      <name>enc_scoped_pdu(ScopedPdu) -> [byte()]</name>
+      <name since="">enc_scoped_pdu(ScopedPdu) -> [byte()]</name>
       <fsummary>Encode an SNMP scopedPDU</fsummary>
       <type>
         <v>ScopedPdu = #scoped_pdu</v>
@@ -190,7 +190,7 @@
       </desc>
     </func>
     <func>
-      <name>enc_usm_security_parameters(UsmSecParams) -> [byte()]</name>
+      <name since="">enc_usm_security_parameters(UsmSecParams) -> [byte()]</name>
       <fsummary>Encode SNMP UsmSecurityParameters</fsummary>
       <type>
         <v>UsmSecParams = #usmSecurityParameters</v>
diff --git a/lib/snmp/doc/src/snmp_standard_mib.xml b/lib/snmp/doc/src/snmp_standard_mib.xml
index 35efbba483..eb4e2fd097 100644
--- a/lib/snmp/doc/src/snmp_standard_mib.xml
+++ b/lib/snmp/doc/src/snmp_standard_mib.xml
@@ -32,7 +32,7 @@
     <rev></rev>
     <file>snmp_standard_mib.xml</file>
   </header>
-  <module>snmp_standard_mib</module>
+  <module since="">snmp_standard_mib</module>
   <modulesummary>Instrumentation Functions for STANDARD-MIB and SNMPv2-MIB</modulesummary>
   <description>
     <p>The module <c>snmp_standard_mib</c> implements the instrumentation functions for the
@@ -42,7 +42,7 @@
   </description>
   <funcs>
     <func>
-      <name>configure(ConfDir) -> void()</name>
+      <name since="">configure(ConfDir) -> void()</name>
       <fsummary>Configure the STANDARD-MIB and SNMPv2-MIB</fsummary>
       <type>
         <v>ConfDir = string()</v>
@@ -71,8 +71,8 @@
       </desc>
     </func>
     <func>
-      <name>inc(Name) -> void()</name>
-      <name>inc(Name, N) -> void()</name>
+      <name since="">inc(Name) -> void()</name>
+      <name since="">inc(Name, N) -> void()</name>
       <fsummary>Increment a variable in the MIB</fsummary>
       <type>
         <v>Name = atom()</v>
@@ -84,7 +84,7 @@
       </desc>
     </func>
     <func>
-      <name>reconfigure(ConfDir) -> void()</name>
+      <name since="">reconfigure(ConfDir) -> void()</name>
       <fsummary>Configure the STANDARD-MIB and SNMPv2-MIB</fsummary>
       <type>
         <v>ConfDir = string()</v>
@@ -114,14 +114,14 @@
       </desc>
     </func>
     <func>
-      <name>reset() -> void()</name>
+      <name since="">reset() -> void()</name>
       <fsummary>Reset all <c>snmp</c>counters to 0</fsummary>
       <desc>
         <p>Resets all <c>snmp</c> counters to 0.</p>
       </desc>
     </func>
     <func>
-      <name>sys_up_time() -> Time</name>
+      <name since="">sys_up_time() -> Time</name>
       <fsummary>Get the system up time</fsummary>
       <type>
         <v>Time = int()</v>
diff --git a/lib/snmp/doc/src/snmp_target_mib.xml b/lib/snmp/doc/src/snmp_target_mib.xml
index c3bcd3b4e3..c46edb810d 100644
--- a/lib/snmp/doc/src/snmp_target_mib.xml
+++ b/lib/snmp/doc/src/snmp_target_mib.xml
@@ -32,7 +32,7 @@
     <rev></rev>
     <file>snmp_target_mib.xml</file>
   </header>
-  <module>snmp_target_mib</module>
+  <module since="">snmp_target_mib</module>
   <modulesummary>Instrumentation Functions for SNMP-TARGET-MIB</modulesummary>
   <description>
     <p>The module <c>snmp_target_mib</c> implements the instrumentation
@@ -57,7 +57,7 @@
 
   <funcs>
     <func>
-      <name>configure(ConfDir) -> void()</name>
+      <name since="">configure(ConfDir) -> void()</name>
       <fsummary>Configure the SNMP-TARGET-MIB</fsummary>
       <type>
         <v>ConfDir = string()</v>
@@ -85,7 +85,7 @@
     </func>
 
     <func>
-      <name>reconfigure(ConfDir) -> void()</name>
+      <name since="">reconfigure(ConfDir) -> void()</name>
       <fsummary>Configure the SNMP-TARGET-MIB</fsummary>
       <type>
         <v>ConfDir = string()</v>
@@ -113,7 +113,7 @@
     </func>
 
     <func>
-      <name>set_target_engine_id(TargetAddrName, EngineId) -> boolean()</name>
+      <name since="">set_target_engine_id(TargetAddrName, EngineId) -> boolean()</name>
       <fsummary>Set the engine id for a targetAddr row.</fsummary>
       <type>
         <v>TargetAddrName = string()</v>
@@ -130,7 +130,7 @@
     </func>
 
     <func>
-      <name>add_addr(Name, Domain, Addr, Timeout, Retry, TagList, Params, EngineId, TMask, MMS) -> Ret</name>
+      <name since="">add_addr(Name, Domain, Addr, Timeout, Retry, TagList, Params, EngineId, TMask, MMS) -> Ret</name>
       <fsummary>Add one target address definition</fsummary>
       <type>
         <v>Name = string()</v>
@@ -156,7 +156,7 @@
     </func>
 
     <func>
-      <name>delete_addr(Key) -> Ret</name>
+      <name since="">delete_addr(Key) -> Ret</name>
       <fsummary>Delete one target address definition</fsummary>
       <type>
         <v>Key = term()</v>
@@ -171,7 +171,7 @@
     </func>
 
     <func>
-      <name>add_params(Name, MPModel, SecModel, SecName, SecLevel) -> Ret</name>
+      <name since="">add_params(Name, MPModel, SecModel, SecName, SecLevel) -> Ret</name>
       <fsummary>Add one target parameter definition</fsummary>
       <type>
         <v>Name = string()</v>
@@ -191,7 +191,7 @@
       </desc>
     </func>
     <func>
-      <name>delete_params(Key) -> Ret</name>
+      <name since="">delete_params(Key) -> Ret</name>
       <fsummary>Delete one target parameter definition</fsummary>
       <type>
         <v>Key = term()</v>
diff --git a/lib/snmp/doc/src/snmp_user_based_sm_mib.xml b/lib/snmp/doc/src/snmp_user_based_sm_mib.xml
index cc376ac118..6c2203ed22 100644
--- a/lib/snmp/doc/src/snmp_user_based_sm_mib.xml
+++ b/lib/snmp/doc/src/snmp_user_based_sm_mib.xml
@@ -32,7 +32,7 @@
     <rev></rev>
     <file>snmp_user_based_sm_mib.xml</file>
   </header>
-  <module>snmp_user_based_sm_mib</module>
+  <module since="">snmp_user_based_sm_mib</module>
   <modulesummary>Instrumentation Functions for SNMP-USER-BASED-SM-MIB</modulesummary>
   <description>
     <p>The module <c>snmp_user_based_sm_mib</c> implements the instrumentation 
@@ -43,7 +43,7 @@
   </description>
   <funcs>
     <func>
-      <name>configure(ConfDir) -> void()</name>
+      <name since="">configure(ConfDir) -> void()</name>
       <fsummary>Configure the SNMP-USER-BASED-SM-MIB</fsummary>
       <type>
         <v>ConfDir = string()</v>
@@ -72,7 +72,7 @@
       </desc>
     </func>
     <func>
-      <name>reconfigure(ConfDir) -> void()</name>
+      <name since="">reconfigure(ConfDir) -> void()</name>
       <fsummary>Configure the SNMP-USER-BASED-SM-MIB</fsummary>
       <type>
         <v>ConfDir = string()</v>
@@ -103,7 +103,7 @@
       </desc>
     </func>
     <func>
-      <name>add_user(EngineID, Name, SecName, Clone, AuthP, AuthKeyC, OwnAuthKeyC, PrivP, PrivKeyC, OwnPrivKeyC, Public, AuthKey, PrivKey) -> Ret</name>
+      <name since="">add_user(EngineID, Name, SecName, Clone, AuthP, AuthKeyC, OwnAuthKeyC, PrivP, PrivKeyC, OwnPrivKeyC, Public, AuthKey, PrivKey) -> Ret</name>
       <fsummary>Add one user</fsummary>
       <type>
         <v>EngineID = string()</v>
@@ -130,7 +130,7 @@
       </desc>
     </func>
     <func>
-      <name>delete_user(Key) -> Ret</name>
+      <name since="">delete_user(Key) -> Ret</name>
       <fsummary>Delete one user</fsummary>
       <type>
         <v>Key = term()</v>
diff --git a/lib/snmp/doc/src/snmp_view_based_acm_mib.xml b/lib/snmp/doc/src/snmp_view_based_acm_mib.xml
index fdad735e71..c5e98a3eb5 100644
--- a/lib/snmp/doc/src/snmp_view_based_acm_mib.xml
+++ b/lib/snmp/doc/src/snmp_view_based_acm_mib.xml
@@ -32,7 +32,7 @@
     <rev></rev>
     <file>snmp_view_based_acm_mib.xml</file>
   </header>
-  <module>snmp_view_based_acm_mib</module>
+  <module since="">snmp_view_based_acm_mib</module>
   <modulesummary>Instrumentation Functions for SNMP-VIEW-BASED-ACM-MIB</modulesummary>
   <description>
     <p>The module <c>snmp_view_based_acm_mib</c> implements the instrumentation functions for the
@@ -45,7 +45,7 @@
 
   <funcs>
     <func>
-      <name>configure(ConfDir) -> void()</name>
+      <name since="">configure(ConfDir) -> void()</name>
       <fsummary>Configure the SNMP-VIEW-BASED-ACM-MIB</fsummary>
       <type>
         <v>ConfDir = string()</v>
@@ -71,7 +71,7 @@
     </func>
 
     <func>
-      <name>reconfigure(ConfDir) -> void()</name>
+      <name since="">reconfigure(ConfDir) -> void()</name>
       <fsummary>Configure the SNMP-VIEW-BASED-ACM-MIB</fsummary>
       <type>
         <v>ConfDir = string()</v>
@@ -104,7 +104,7 @@
     </func>
 
     <func>
-      <name>add_sec2group(SecModel, SecName, GroupName) -> Ret</name>
+      <name since="">add_sec2group(SecModel, SecName, GroupName) -> Ret</name>
       <fsummary>Add one security to group definition</fsummary>
       <type>
         <v>SecModel = v1 | v2c | usm</v>
@@ -124,7 +124,7 @@
     </func>
 
     <func>
-      <name>delete_sec2group(Key) -> Ret</name>
+      <name since="">delete_sec2group(Key) -> Ret</name>
       <fsummary>Delete one security to group definition</fsummary>
       <type>
         <v>Key = term()</v>
@@ -139,7 +139,7 @@
     </func>
 
     <func>
-      <name>add_access(GroupName, Prefix, SecModel, SecLevel, Match, RV, WV, NV) -> Ret</name>
+      <name since="">add_access(GroupName, Prefix, SecModel, SecLevel, Match, RV, WV, NV) -> Ret</name>
       <fsummary>Add one access definition</fsummary>
       <type>
         <v>GroupName = string()</v>
@@ -163,7 +163,7 @@
     </func>
 
     <func>
-      <name>delete_access(Key) -> Ret</name>
+      <name since="">delete_access(Key) -> Ret</name>
       <fsummary>Delete one access definition</fsummary>
       <type>
         <v>Key = term()</v>
@@ -178,7 +178,7 @@
     </func>
 
     <func>
-      <name>add_view_tree_fam(ViewIndex, SubTree, Status, Mask) -> Ret</name>
+      <name since="">add_view_tree_fam(ViewIndex, SubTree, Status, Mask) -> Ret</name>
       <fsummary>Add one view tree family definition</fsummary>
       <type>
         <v>ViewIndex = integer()</v>
@@ -199,7 +199,7 @@
     </func>
 
     <func>
-      <name>delete_view_tree_fam(Key) -> Ret</name>
+      <name since="">delete_view_tree_fam(Key) -> Ret</name>
       <fsummary>Delete one view tree family definition</fsummary>
       <type>
         <v>Key = term()</v>
diff --git a/lib/snmp/doc/src/snmpa.xml b/lib/snmp/doc/src/snmpa.xml
index b78f14da01..dc2f4e6d66 100644
--- a/lib/snmp/doc/src/snmpa.xml
+++ b/lib/snmp/doc/src/snmpa.xml
@@ -32,7 +32,7 @@
     <rev></rev>
     <file>snmpa.xml</file>
   </header>
-  <module>snmpa</module>
+  <module since="">snmpa</module>
   <modulesummary>Interface Functions to the SNMP toolkit agent</modulesummary>
   <description>
     <p>The module <c>snmpa</c> contains interface functions to the 
@@ -77,7 +77,7 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
 
   <funcs>
     <func>
-      <name>add_agent_caps(SysORID, SysORDescr) -> SysORIndex</name>
+      <name since="">add_agent_caps(SysORID, SysORDescr) -> SysORIndex</name>
       <fsummary>Add an AGENT-CAPABILITY definition to the agent</fsummary>
       <type>
         <v>SysORID = oid()</v>
@@ -93,7 +93,7 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>del_agent_caps(SysORIndex) -> void()</name>
+      <name since="">del_agent_caps(SysORIndex) -> void()</name>
       <fsummary>Delete an AGENT-CAPABILITY definition from the agent</fsummary>
       <type>
         <v>SysORIndex = integer()</v>
@@ -108,7 +108,7 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>get_agent_caps() -> [[SysORIndex, SysORID, SysORDescr, SysORUpTime]]</name>
+      <name since="">get_agent_caps() -> [[SysORIndex, SysORID, SysORDescr, SysORUpTime]]</name>
       <fsummary>Return all AGENT-CAPABILITY definitions in the agent</fsummary>
       <type>
         <v>SysORIndex = integer()</v>
@@ -125,8 +125,8 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>get(Agent, Vars) -> Values | {error, Reason}</name>
-      <name>get(Agent, Vars, Context) -> Values | {error, Reason}</name>
+      <name since="">get(Agent, Vars) -> Values | {error, Reason}</name>
+      <name since="">get(Agent, Vars, Context) -> Values | {error, Reason}</name>
       <fsummary>Perform a get operation on the agent</fsummary>
       <type>
         <v>Agent = pid() | atom()</v>
@@ -150,8 +150,8 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>get_next(Agent, Vars) -> Values | {error, Reason}</name>
-      <name>get_next(Agent, Vars, Context) -> Values | {error, Reason}</name>
+      <name since="">get_next(Agent, Vars) -> Values | {error, Reason}</name>
+      <name since="">get_next(Agent, Vars, Context) -> Values | {error, Reason}</name>
       <fsummary>Perform a get-next operation on the agent</fsummary>
       <type>
         <v>Agent = pid() | atom()</v>
@@ -176,7 +176,7 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
 
 <!--
     <func>
-      <name>get_symbolic_store_db() -> Db</name>
+      <name since="">get_symbolic_store_db() -> Db</name>
       <fsummary>Retrieve the symbolic store database reference</fsummary>
       <type>
         <v>Db = term()</v>
@@ -193,8 +193,8 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
 
 -->
     <func>
-      <name>backup(BackupDir) -> ok | {error, Reason}</name>
-      <name>backup(Agent, BackupDir) -> ok | {error, Reason}</name>
+      <name since="">backup(BackupDir) -> ok | {error, Reason}</name>
+      <name since="">backup(Agent, BackupDir) -> ok | {error, Reason}</name>
       <fsummary>Backup agent data</fsummary>
       <type>
         <v>BackupDir = string()</v>
@@ -216,8 +216,8 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
       </desc>
     </func>
     <func>
-      <name>info() -> [{Key, Value}]</name>
-      <name>info(Agent) -> [{Key, Value}]</name>
+      <name since="">info() -> [{Key, Value}]</name>
+      <name since="">info(Agent) -> [{Key, Value}]</name>
       <fsummary>Return information about the agent</fsummary>
       <type>
         <v>Agent = pid() | atom()</v>
@@ -236,7 +236,7 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>old_info_format(NewInfo) -> OldInfo</name>
+      <name since="">old_info_format(NewInfo) -> OldInfo</name>
       <fsummary>Return information about the agent</fsummary>
       <type>
         <v>OldInfo = NewInfo = [{Key, Value}]</v>
@@ -251,8 +251,8 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>load_mib(Mib) -> ok | {error, Reason}</name>
-      <name>load_mib(Agent, Mib) -> ok | {error, Reason}</name>
+      <name since="OTP R16B02">load_mib(Mib) -> ok | {error, Reason}</name>
+      <name since="OTP R16B02">load_mib(Agent, Mib) -> ok | {error, Reason}</name>
       <fsummary>Load single MIB into the agent</fsummary>
       <type>
         <v>Agent = pid() | atom()</v>
@@ -273,10 +273,10 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>load_mibs(Mibs) -> ok | {error, Reason}</name>
-      <name>load_mibs(Mibs, Force) -> ok | {error, Reason}</name>
-      <name>load_mibs(Agent, Mibs) -> ok | {error, Reason}</name>
-      <name>load_mibs(Agent, Mibs, Force) -> ok | {error, Reason}</name>
+      <name since="">load_mibs(Mibs) -> ok | {error, Reason}</name>
+      <name since="">load_mibs(Mibs, Force) -> ok | {error, Reason}</name>
+      <name since="">load_mibs(Agent, Mibs) -> ok | {error, Reason}</name>
+      <name since="OTP R16B02">load_mibs(Agent, Mibs, Force) -> ok | {error, Reason}</name>
       <fsummary>Load MIBs into the agent</fsummary>
       <type>
         <v>Agent = pid() | atom()</v>
@@ -305,8 +305,8 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>unload_mib(Mib) -> ok | {error, Reason}</name>
-      <name>unload_mib(Agent, Mib) -> ok | {error, Reason}</name>
+      <name since="OTP R16B02">unload_mib(Mib) -> ok | {error, Reason}</name>
+      <name since="OTP R16B02">unload_mib(Agent, Mib) -> ok | {error, Reason}</name>
       <fsummary>Unload single MIB from the agent</fsummary>
       <type>
         <v>Agent = pid() | atom()</v>
@@ -321,10 +321,10 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>unload_mibs(Mibs) -> ok | {error, Reason}</name>
-      <name>unload_mibs(Mibs, Force) -> ok | {error, Reason}</name>
-      <name>unload_mibs(Agent, Mibs) -> ok | {error, Reason}</name>
-      <name>unload_mibs(Agent, Mibs, Force) -> ok | {error, Reason}</name>
+      <name since="">unload_mibs(Mibs) -> ok | {error, Reason}</name>
+      <name since="">unload_mibs(Mibs, Force) -> ok | {error, Reason}</name>
+      <name since="">unload_mibs(Agent, Mibs) -> ok | {error, Reason}</name>
+      <name since="OTP R16B02">unload_mibs(Agent, Mibs, Force) -> ok | {error, Reason}</name>
       <fsummary>Unload MIBs from the agent</fsummary>
       <type>
         <v>Agent = pid() | atom()</v>
@@ -347,8 +347,8 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>which_mibs() -> Mibs</name>
-      <name>which_mibs(Agent) -> Mibs</name>
+      <name since="">which_mibs() -> Mibs</name>
+      <name since="">which_mibs(Agent) -> Mibs</name>
       <fsummary>Get a list of all the loaded mibs</fsummary>
       <type>
         <v>Agent = pid() | atom()</v>
@@ -365,8 +365,8 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>whereis_mib(MibName) -> {ok, MibFile} | {error, Reason}</name>
-      <name>whereis_mib(Agent, MibName) -> {ok, MibFile} | {error, Reason}</name>
+      <name since="">whereis_mib(MibName) -> {ok, MibFile} | {error, Reason}</name>
+      <name since="">whereis_mib(Agent, MibName) -> {ok, MibFile} | {error, Reason}</name>
       <fsummary>Get the path to the mib file</fsummary>
       <type>
         <v>Agent = pid() | atom()</v>
@@ -385,10 +385,10 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>current_request_id() -> {value, RequestId} | false</name>
-      <name>current_context() -> {value, Context} | false</name>
-      <name>current_community() -> {value, Community} | false</name>
-      <name>current_address() -> {value, Address} | false</name>
+      <name since="">current_request_id() -> {value, RequestId} | false</name>
+      <name since="">current_context() -> {value, Context} | false</name>
+      <name since="">current_community() -> {value, Community} | false</name>
+      <name since="">current_address() -> {value, Address} | false</name>
       <fsummary>Get the request-id, context, community and address of the current request</fsummary>
       <type>
         <v>RequestId = integer()</v>
@@ -409,8 +409,8 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>enum_to_int(Name, Enum) -> {value, Int} | false</name>
-      <name>enum_to_int(Db, Name, Enum) -> {value, Int} | false</name>
+      <name since="">enum_to_int(Name, Enum) -> {value, Int} | false</name>
+      <name since="">enum_to_int(Db, Name, Enum) -> {value, Int} | false</name>
       <fsummary>Convert an enum value to an integer</fsummary>
       <type>
         <v>Db   = term()</v>
@@ -435,8 +435,8 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>int_to_enum(Name, Int) -> {value, Enum} | false</name>
-      <name>int_to_enum(Db, Name, Int) -> {value, Enum} | false</name>
+      <name since="">int_to_enum(Name, Int) -> {value, Enum} | false</name>
+      <name since="">int_to_enum(Db, Name, Int) -> {value, Enum} | false</name>
       <fsummary>Convert an integer to an enum value</fsummary>
       <type>
         <v>Db   = term()</v>
@@ -461,8 +461,8 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>name_to_oid(Name) -> {value, oid()} | false</name>
-      <name>name_to_oid(Db, Name) -> {value, oid()} | false</name>
+      <name since="">name_to_oid(Name) -> {value, oid()} | false</name>
+      <name since="">name_to_oid(Db, Name) -> {value, oid()} | false</name>
       <fsummary>Convert a symbolic name to an OID</fsummary>
       <type>
         <v>Db   = term()</v>
@@ -482,8 +482,8 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>oid_to_name(OID) -> {value, Name} | false</name>
-      <name>oid_to_name(Db, OID) -> {value, Name} | false</name>
+      <name since="">oid_to_name(OID) -> {value, Name} | false</name>
+      <name since="">oid_to_name(Db, OID) -> {value, Name} | false</name>
       <fsummary>Convert an OID to a symbolic name</fsummary>
       <type>
         <v>Db   = term()</v>
@@ -503,7 +503,7 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>which_aliasnames() -> Result</name>
+      <name since="">which_aliasnames() -> Result</name>
       <fsummary>Get all alias-names known to the agent</fsummary>
       <type>
         <v>Result = [atom()]</v>
@@ -515,7 +515,7 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>which_tables() -> Result</name>
+      <name since="">which_tables() -> Result</name>
       <fsummary>Get all tables known to the agent</fsummary>
       <type>
         <v>Result = [atom()]</v>
@@ -528,7 +528,7 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>which_variables() -> Result</name>
+      <name since="">which_variables() -> Result</name>
       <fsummary>Get all variables known to the agent</fsummary>
       <type>
         <v>Result = [atom()]</v>
@@ -541,7 +541,7 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>which_notifications() -> Result</name>
+      <name since="">which_notifications() -> Result</name>
       <fsummary>Get all notifications known to the agent</fsummary>
       <type>
         <v>Result = [{Name, MibName, Info}]</v>
@@ -557,15 +557,15 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>log_to_txt(LogDir)</name>
-      <name>log_to_txt(LogDir, Block | Mibs)</name>
-      <name>log_to_txt(LogDir, Mibs, Block | OutFile) -> ok | {ok, Cnt} | {error, Reason}</name>
-      <name>log_to_txt(LogDir, Mibs, OutFile, Block | LogName) ->  ok | {ok, Cnt} | {error, Reason}</name>
-      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, Block | LogFile) ->  ok | {ok, Cnt} | {error, Reason}</name>
-      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block | Start) ->  ok | {ok, Cnt} | {error, Reason}</name>
-      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block, Start)  -> ok | {ok, Cnt} | {error, Reason}</name>
-      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Start, Stop)  -> ok | {ok, Cnt} | {error, Reason}</name>
-      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block, Start, Stop)  -> ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="OTP R15B01">log_to_txt(LogDir)</name>
+      <name since="">log_to_txt(LogDir, Block | Mibs)</name>
+      <name since="">log_to_txt(LogDir, Mibs, Block | OutFile) -> ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="">log_to_txt(LogDir, Mibs, OutFile, Block | LogName) ->  ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="">log_to_txt(LogDir, Mibs, OutFile, LogName, Block | LogFile) ->  ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="">log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block | Start) ->  ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="">log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block, Start)  -> ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="">log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Start, Stop)  -> ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="OTP R16B03">log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block, Start, Stop)  -> ok | {ok, Cnt} | {error, Reason}</name>
       <fsummary>Convert an Audit Trail Log to text format</fsummary>
       <type>
         <v>LogDir = string()</v>
@@ -600,14 +600,14 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>log_to_io(LogDir) ->  ok | {ok, Cnt} | {error, Reason}</name>
-      <name>log_to_io(LogDir, Block | Mibs) ->  ok | {ok, Cnt} | {error, Reason}</name>
-      <name>log_to_io(LogDir, Mibs, Block | LogName) ->  ok | {ok, Cnt} | {error, Reason}</name>
-      <name>log_to_io(LogDir, Mibs, LogName, Block | LogFile) -> ok | {ok, Cnt} | {error, Reason}</name>
-      <name>log_to_io(LogDir, Mibs, LogName, LogFile, Block | Start) -> ok | {ok, Cnt} | {error, Reason}</name>
-      <name>log_to_io(LogDir, Mibs, LogName, LogFile, Block, Start) -> ok | {ok, Cnt} | {error, Reason}</name>
-      <name>log_to_io(LogDir, Mibs, LogName, LogFile, Start, Stop) -> ok | {ok, Cnt} | {error, Reason}</name>
-      <name>log_to_io(LogDir, Mibs, LogName, LogFile, Block, Start, Stop) -> ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="OTP R15B01">log_to_io(LogDir) ->  ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="OTP R15B01">log_to_io(LogDir, Block | Mibs) ->  ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="OTP R15B01">log_to_io(LogDir, Mibs, Block | LogName) ->  ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="OTP R15B01">log_to_io(LogDir, Mibs, LogName, Block | LogFile) -> ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="OTP R15B01">log_to_io(LogDir, Mibs, LogName, LogFile, Block | Start) -> ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="OTP R15B01">log_to_io(LogDir, Mibs, LogName, LogFile, Block, Start) -> ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="OTP R15B01">log_to_io(LogDir, Mibs, LogName, LogFile, Start, Stop) -> ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="OTP R16B03">log_to_io(LogDir, Mibs, LogName, LogFile, Block, Start, Stop) -> ok | {ok, Cnt} | {error, Reason}</name>
       <fsummary>Convert an Audit Trail Log to text format</fsummary>
       <type>
         <v>LogDir = string()</v>
@@ -641,7 +641,7 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>change_log_size(NewSize) -> ok | {error, Reason}</name>
+      <name since="">change_log_size(NewSize) -> ok | {error, Reason}</name>
       <fsummary>Change the size of the Audit Trail Log</fsummary>
       <type>
         <v>NewSize = {MaxBytes, MaxFiles}</v>
@@ -662,8 +662,8 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>set_log_type(NewType) -> {ok, OldType} | {error, Reason}</name>
-      <name>set_log_type(Agent, NewType) -> {ok, OldType} | {error, Reason}</name>
+      <name since="">set_log_type(NewType) -> {ok, OldType} | {error, Reason}</name>
+      <name since="">set_log_type(Agent, NewType) -> {ok, OldType} | {error, Reason}</name>
       <fsummary>Change the type of the Audit Trail Log</fsummary>
       <type>
         <v>NewType = OldType = atl_type()</v>
@@ -684,8 +684,8 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>mib_of(Oid) -> {ok, MibName} | {error, Reason}</name>
-      <name>mib_of(Agent, Oid) -> {ok, MibName} | {error, Reason}</name>
+      <name since="">mib_of(Oid) -> {ok, MibName} | {error, Reason}</name>
+      <name since="">mib_of(Agent, Oid) -> {ok, MibName} | {error, Reason}</name>
       <fsummary>Which mib an Oid belongs to</fsummary>
       <type>
         <v>Agent = pid() | atom()</v>
@@ -704,8 +704,8 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>me_of(Oid) -> {ok, Me} | {error, Reason}</name>
-      <name>me_of(Agent, Oid) -> {ok, Me} | {error, Reason}</name>
+      <name since="">me_of(Oid) -> {ok, Me} | {error, Reason}</name>
+      <name since="">me_of(Agent, Oid) -> {ok, Me} | {error, Reason}</name>
       <fsummary>Retrieve the mib-entry of an Oid</fsummary>
       <type>
         <v>Agent = pid() | atom()</v>
@@ -724,8 +724,8 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>invalidate_mibs_cache() -> void()</name>
-      <name>invalidate_mibs_cache(Agent) -> void()</name>
+      <name since="">invalidate_mibs_cache() -> void()</name>
+      <name since="">invalidate_mibs_cache(Agent) -> void()</name>
       <fsummary>Invalidate the mib server cache</fsummary>
       <type>
         <v>Agent = pid() | atom()</v>
@@ -739,8 +739,8 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>enable_mibs_cache() -> void()</name>
-      <name>enable_mibs_cache(Agent) -> void()</name>
+      <name since="">enable_mibs_cache() -> void()</name>
+      <name since="">enable_mibs_cache(Agent) -> void()</name>
       <fsummary>Enable the mib server cache</fsummary>
       <type>
         <v>Agent = pid() | atom()</v>
@@ -753,8 +753,8 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>disable_mibs_cache() -> void()</name>
-      <name>disable_mibs_cache(Agent) -> void()</name>
+      <name since="">disable_mibs_cache() -> void()</name>
+      <name since="">disable_mibs_cache(Agent) -> void()</name>
       <fsummary>Disable the mib server cache</fsummary>
       <type>
         <v>Agent = pid() | atom()</v>
@@ -767,8 +767,8 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>which_mibs_cache_size() -> void()</name>
-      <name>which_mibs_cache_size(Agent) -> void()</name>
+      <name since="OTP R14B">which_mibs_cache_size() -> void()</name>
+      <name since="OTP R14B">which_mibs_cache_size(Agent) -> void()</name>
       <fsummary>The size of the mib server cache</fsummary>
       <type>
         <v>Agent = pid() | atom()</v>
@@ -781,12 +781,12 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>gc_mibs_cache() -> {ok, NumElementsGCed} | {error, Reason}</name>
-      <name>gc_mibs_cache(Agent) -> {ok, NumElementsGCed} | {error, Reason}</name>
-      <name>gc_mibs_cache(Age) -> {ok, NumElementsGCed} | {error, Reason}</name>
-      <name>gc_mibs_cache(Agent, Age) -> {ok, NumElementsGCed} | {error, Reason}</name>
-      <name>gc_mibs_cache(Age, GcLimit) -> {ok, NumElementsGCed} | {error, Reason}</name>
-      <name>gc_mibs_cache(Agent, Age, GcLimit) -> {ok, NumElementsGCed} | {error, Reason}</name>
+      <name since="">gc_mibs_cache() -> {ok, NumElementsGCed} | {error, Reason}</name>
+      <name since="">gc_mibs_cache(Agent) -> {ok, NumElementsGCed} | {error, Reason}</name>
+      <name since="">gc_mibs_cache(Age) -> {ok, NumElementsGCed} | {error, Reason}</name>
+      <name since="">gc_mibs_cache(Agent, Age) -> {ok, NumElementsGCed} | {error, Reason}</name>
+      <name since="">gc_mibs_cache(Age, GcLimit) -> {ok, NumElementsGCed} | {error, Reason}</name>
+      <name since="">gc_mibs_cache(Agent, Age, GcLimit) -> {ok, NumElementsGCed} | {error, Reason}</name>
       <fsummary>Perform mib server cache gc</fsummary>
       <type>
         <v>Agent = pid() | atom()</v>
@@ -808,8 +808,8 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>enable_mibs_cache_autogc() -> void()</name>
-      <name>enable_mibs_cache_autogc(Agent) -> void()</name>
+      <name since="">enable_mibs_cache_autogc() -> void()</name>
+      <name since="">enable_mibs_cache_autogc(Agent) -> void()</name>
       <fsummary>Enable automatic gc of the mib server cache</fsummary>
       <type>
         <v>Agent = pid() | atom()</v>
@@ -822,8 +822,8 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>disable_mibs_cache_autogc() -> void()</name>
-      <name>disable_mibs_cache_autogc(Agent) -> void()</name>
+      <name since="">disable_mibs_cache_autogc() -> void()</name>
+      <name since="">disable_mibs_cache_autogc(Agent) -> void()</name>
       <fsummary>Disable automatic gc of the mib server cache</fsummary>
       <type>
         <v>Agent = pid() | atom()</v>
@@ -836,8 +836,8 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>update_mibs_cache_age(NewAge) -> ok | {error, Reason}</name>
-      <name>update_mibs_cache_age(Agent, NewAge) -> ok | {error, Reason}</name>
+      <name since="">update_mibs_cache_age(NewAge) -> ok | {error, Reason}</name>
+      <name since="">update_mibs_cache_age(Agent, NewAge) -> ok | {error, Reason}</name>
       <fsummary>Change the mib server cache age property</fsummary>
       <type>
         <v>Agent = pid() | atom()</v>
@@ -852,8 +852,8 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>update_mibs_cache_gclimit(NewGcLimit) -> ok | {error, Reason}</name>
-      <name>update_mibs_cache_gclimit(Agent, NewGCLimit) -> ok | {error, Reason}</name>
+      <name since="">update_mibs_cache_gclimit(NewGcLimit) -> ok | {error, Reason}</name>
+      <name since="">update_mibs_cache_gclimit(Agent, NewGCLimit) -> ok | {error, Reason}</name>
       <fsummary>Change the mib server cache gclimit property</fsummary>
       <type>
         <v>Agent = pid() | atom()</v>
@@ -869,10 +869,10 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
 
 
     <func>
-      <name>register_notification_filter(Id, Mod, Data) -> ok | {error, Reason}</name>
-      <name>register_notification_filter(Agent, Id, Mod, Data) -> ok | {error, Reason}</name>
-      <name>register_notification_filter(Id, Mod, Data, Where) -> ok | {error, Reason}</name>
-      <name>register_notification_filter(Agent, Id, Mod, Data, Where) -> ok | {error, Reason}</name>
+      <name since="">register_notification_filter(Id, Mod, Data) -> ok | {error, Reason}</name>
+      <name since="">register_notification_filter(Agent, Id, Mod, Data) -> ok | {error, Reason}</name>
+      <name since="">register_notification_filter(Id, Mod, Data, Where) -> ok | {error, Reason}</name>
+      <name since="">register_notification_filter(Agent, Id, Mod, Data, Where) -> ok | {error, Reason}</name>
       <fsummary>Register a notification filter</fsummary>
       <type>
         <v>Agent = pid() | atom()</v>
@@ -897,8 +897,8 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>unregister_notification_filter(Id) -> ok | {error, Reason}</name>
-      <name>unregister_notification_filter(Agent, Id) -> ok | {error, Reason}</name>
+      <name since="">unregister_notification_filter(Id) -> ok | {error, Reason}</name>
+      <name since="">unregister_notification_filter(Agent, Id) -> ok | {error, Reason}</name>
       <fsummary>Unregister a notification filter</fsummary>
       <type>
         <v>Agent = pid() | atom()</v>
@@ -913,8 +913,8 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>which_notification_filter() -> Filters</name>
-      <name>which_notification_filter(Agent) -> Filters</name>
+      <name since="">which_notification_filter() -> Filters</name>
+      <name since="">which_notification_filter(Agent) -> Filters</name>
       <fsummary>Which notification filter</fsummary>
       <type>
         <v>Agent = pid() | atom()</v>
@@ -929,8 +929,8 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
    <func>
-      <name>set_request_limit(NewLimit) -> {ok, OldLimit} | {error, Reason}</name>
-      <name>set_request_limit(Agent, NewLimit) -> {ok, OldLimit} | {error, Reason}</name>
+      <name since="">set_request_limit(NewLimit) -> {ok, OldLimit} | {error, Reason}</name>
+      <name since="">set_request_limit(Agent, NewLimit) -> {ok, OldLimit} | {error, Reason}</name>
       <fsummary>Change the request limit</fsummary>
       <type>
         <v>NewLimit = OldLimit = infinity | integer() >= 0</v>
@@ -950,7 +950,7 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>register_subagent(Agent, SubTreeOid, Subagent) -> ok | {error, Reason}</name>
+      <name since="">register_subagent(Agent, SubTreeOid, Subagent) -> ok | {error, Reason}</name>
       <fsummary>Register a sub-agent under a sub-tree</fsummary>
       <type>
         <v>Agent = pid() | atom()</v>
@@ -975,7 +975,7 @@ snmp_agent:register_subagent(SA1,[1,2,3], SA2).
     </func>
 
     <func>
-      <name>unregister_subagent(Agent, SubagentOidOrPid) -> ok | {ok, SubAgentPid} | {error, Reason}</name>
+      <name since="">unregister_subagent(Agent, SubagentOidOrPid) -> ok | {ok, SubAgentPid} | {error, Reason}</name>
       <fsummary>Unregister a sub-agent</fsummary>
       <type>
         <v>Agent = pid() | atom()</v>
@@ -992,7 +992,7 @@ snmp_agent:register_subagent(SA1,[1,2,3], SA2).
 
 
     <func>
-      <name>send_notification2(Agent, Notification, SendOpts) -> void()</name>
+      <name since="OTP R14B03">send_notification2(Agent, Notification, SendOpts) -> void()</name>
       <fsummary>Send notification</fsummary>
       <type>
         <v>Agent = pid() | atom()</v>
@@ -1119,11 +1119,11 @@ snmp_agent:register_subagent(SA1,[1,2,3], SA2).
 
 
     <func>
-      <name>send_notification(Agent, Notification, Receiver)</name>
-      <name>send_notification(Agent, Notification, Receiver, Varbinds)</name>
-      <name>send_notification(Agent, Notification, Receiver, NotifyName, Varbinds)</name>
-      <name>send_notification(Agent, Notification, Receiver, NotifyName, ContextName, Varbinds) -> void() </name>
-      <name>send_notification(Agent, Notification, Receiver, NotifyName, ContextName, Varbinds, LocalEngineID) -> void() </name>
+      <name since="">send_notification(Agent, Notification, Receiver)</name>
+      <name since="">send_notification(Agent, Notification, Receiver, Varbinds)</name>
+      <name since="">send_notification(Agent, Notification, Receiver, NotifyName, Varbinds)</name>
+      <name since="">send_notification(Agent, Notification, Receiver, NotifyName, ContextName, Varbinds) -> void() </name>
+      <name since="OTP R14B">send_notification(Agent, Notification, Receiver, NotifyName, ContextName, Varbinds, LocalEngineID) -> void() </name>
       <fsummary>Send a notification</fsummary>
       <type>
         <v>Agent = pid() | atom()</v>
@@ -1324,13 +1324,13 @@ snmp_agent:register_subagent(SA1,[1,2,3], SA2).
 
 
     <func>
-      <name>discovery(TargetName, Notification) -> {ok, ManagerEngineID} | {error, Reason}</name>
-      <name>discovery(TargetName, Notification, Varbinds) -> {ok, ManagerEngineID} | {error, Reason}</name>
-      <name>discovery(TargetName, Notification, DiscoHandler) -> {ok, ManagerEngineID} | {error, Reason}</name>
-      <name>discovery(TargetName, Notification, ContextName, Varbinds) -> {ok, ManagerEngineID} | {error, Reason}</name>
-      <name>discovery(TargetName, Notification, Varbinds, DiscoHandler) -> {ok, ManagerEngineID} | {error, Reason}</name>
-      <name>discovery(TargetName, Notification, ContextName, Varbinds, DiscoHandler) -> {ok, ManagerEngineID} | {error, Reason}</name>
-      <name>discovery(TargetName, Notification, ContextName, Varbinds, DiscoHandler, ExtraInfo) -> {ok, ManagerEngineID} | {error, Reason}</name>
+      <name since="">discovery(TargetName, Notification) -> {ok, ManagerEngineID} | {error, Reason}</name>
+      <name since="">discovery(TargetName, Notification, Varbinds) -> {ok, ManagerEngineID} | {error, Reason}</name>
+      <name since="">discovery(TargetName, Notification, DiscoHandler) -> {ok, ManagerEngineID} | {error, Reason}</name>
+      <name since="">discovery(TargetName, Notification, ContextName, Varbinds) -> {ok, ManagerEngineID} | {error, Reason}</name>
+      <name since="">discovery(TargetName, Notification, Varbinds, DiscoHandler) -> {ok, ManagerEngineID} | {error, Reason}</name>
+      <name since="">discovery(TargetName, Notification, ContextName, Varbinds, DiscoHandler) -> {ok, ManagerEngineID} | {error, Reason}</name>
+      <name since="">discovery(TargetName, Notification, ContextName, Varbinds, DiscoHandler, ExtraInfo) -> {ok, ManagerEngineID} | {error, Reason}</name>
       <fsummary>Initiate the discovery process with a manager</fsummary>
       <type>
         <v>TargetName = string()</v>
@@ -1379,7 +1379,7 @@ snmp_agent:register_subagent(SA1,[1,2,3], SA2).
     </func>
 
     <func>
-      <name>convert_config(OldConfig) -> AgentConfig</name>
+      <name since="">convert_config(OldConfig) -> AgentConfig</name>
       <fsummary>Convert old snmp config to new agent config</fsummary>
       <type>
         <v>OldConfig = list()</v>
@@ -1403,8 +1403,8 @@ snmp_agent:register_subagent(SA1,[1,2,3], SA2).
     </func>
 
     <func>
-      <name>restart_worker() -> void()</name>
-      <name>restart_worker(Agent) -> void()</name>
+      <name since="">restart_worker() -> void()</name>
+      <name since="">restart_worker(Agent) -> void()</name>
       <fsummary>Restart the worker process of a multi-threaded agent</fsummary>
       <type>
         <v>Agent = pid() | atom()</v>
@@ -1419,8 +1419,8 @@ snmp_agent:register_subagent(SA1,[1,2,3], SA2).
     </func>
 
     <func>
-      <name>restart_set_worker() -> void()</name>
-      <name>restart_set_worker(Agent) -> void()</name>
+      <name since="">restart_set_worker() -> void()</name>
+      <name since="">restart_set_worker(Agent) -> void()</name>
       <fsummary>Restart the set worker process of a multi-threaded agent</fsummary>
       <type>
         <v>Agent = pid() | atom()</v>
@@ -1435,7 +1435,7 @@ snmp_agent:register_subagent(SA1,[1,2,3], SA2).
     </func>
 
     <func>
-      <name>print_mib_info() -> void()</name>
+      <name since="OTP R14B02">print_mib_info() -> void()</name>
       <fsummary>Print mib info</fsummary>
       <desc>
         <p>Prints the content of all the (snmp) tables and variables 
@@ -1446,7 +1446,7 @@ snmp_agent:register_subagent(SA1,[1,2,3], SA2).
     </func>
 
     <func>
-      <name>print_mib_tables() -> void()</name>
+      <name since="OTP R14B02">print_mib_tables() -> void()</name>
       <fsummary>Print mib tables</fsummary>
       <desc>
         <p>Prints the content of all the (snmp) tables 
@@ -1457,7 +1457,7 @@ snmp_agent:register_subagent(SA1,[1,2,3], SA2).
     </func>
 
     <func>
-      <name>print_mib_variables() -> void()</name>
+      <name since="OTP R14B02">print_mib_variables() -> void()</name>
       <fsummary>Print mib variables</fsummary>
       <desc>
         <p>Prints the content of all the (snmp) variables 
@@ -1468,7 +1468,7 @@ snmp_agent:register_subagent(SA1,[1,2,3], SA2).
     </func>
 
     <func>
-      <name>verbosity(Ref,Verbosity) -> void()</name>
+      <name since="">verbosity(Ref,Verbosity) -> void()</name>
       <fsummary>Assign a new verbosity for the process</fsummary>
       <type>
         <v>Ref = pid() | sub_agents | master_agent | net_if | mib_server | symbolic_store | note_store | local_db</v>
diff --git a/lib/snmp/doc/src/snmpa_conf.xml b/lib/snmp/doc/src/snmpa_conf.xml
index 503e44a6a2..4134a81c0c 100644
--- a/lib/snmp/doc/src/snmpa_conf.xml
+++ b/lib/snmp/doc/src/snmpa_conf.xml
@@ -32,7 +32,7 @@
     <rev></rev>
     <file>snmpa_conf.xml</file>
   </header>
-  <module>snmpa_conf</module>
+  <module since="">snmpa_conf</module>
   <modulesummary>Utility functions for handling the agent config files.</modulesummary>
   <description>
     <p>The module <c>snmpa_conf</c> contains various utility functions to 
@@ -92,7 +92,7 @@ word() = 0..65535
 
   <funcs>
     <func>
-      <name>agent_entry(Tag, Val) -> agent_entry()</name>
+      <name since="">agent_entry(Tag, Val) -> agent_entry()</name>
       <fsummary>Create an agent entry</fsummary>
       <type>
         <v>Tag = intAgentTransports | intAgentUDPPort | intAgentMaxPacketSize | snmpEngineMaxMessageSize | snmpEngineID</v>
@@ -111,8 +111,8 @@ word() = 0..65535
     </func>
 
     <func>
-      <name>write_agent_config(Dir, Conf) -> ok</name>
-      <name>write_agent_config(Dir, Hdr, Conf) -> ok</name>
+      <name since="">write_agent_config(Dir, Conf) -> ok</name>
+      <name since="">write_agent_config(Dir, Hdr, Conf) -> ok</name>
       <fsummary>Write the agent config to the config file</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -134,7 +134,7 @@ word() = 0..65535
     </func>
 
     <func>
-      <name>append_agent_config(Dir, Conf) -> ok</name>
+      <name since="">append_agent_config(Dir, Conf) -> ok</name>
       <fsummary>Append the agent config to the config file</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -153,7 +153,7 @@ word() = 0..65535
     </func>
 
     <func>
-      <name>read_agent_config(Dir) -> Conf</name>
+      <name since="">read_agent_config(Dir) -> Conf</name>
       <fsummary>Read the agent config from the config file</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -172,7 +172,7 @@ word() = 0..65535
     </func>
 
     <func>
-      <name>standard_entry(Tag, Val) -> standard_entry()</name>
+      <name since="">standard_entry(Tag, Val) -> standard_entry()</name>
       <fsummary>Create an standard entry</fsummary>
       <type>
         <v>Tag = sysDescr | sysObjectID | sysContact | sysName | sysLocation | sysServices | snmpEnableAuthenTraps</v>
@@ -192,8 +192,8 @@ word() = 0..65535
     </func>
 
     <func>
-      <name>write_standard_config(Dir, Conf) -> ok</name>
-      <name>write_standard_config(Dir, Hdr, Conf) -> ok</name>
+      <name since="">write_standard_config(Dir, Conf) -> ok</name>
+      <name since="">write_standard_config(Dir, Hdr, Conf) -> ok</name>
       <fsummary>Write the agent standard config to the config file</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -216,7 +216,7 @@ word() = 0..65535
     </func>
 
     <func>
-      <name>append_standard_config(Dir, Conf) -> ok</name>
+      <name since="">append_standard_config(Dir, Conf) -> ok</name>
       <fsummary>Append the agent standard config to the config file</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -236,7 +236,7 @@ word() = 0..65535
     </func>
 
     <func>
-      <name>read_standard_config(Dir) -> Conf</name>
+      <name since="">read_standard_config(Dir) -> Conf</name>
       <fsummary>Read the agent standard config from the config file</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -255,7 +255,7 @@ word() = 0..65535
     </func>
 
     <func>
-      <name>context_entry(Context) -> context_entry()</name>
+      <name since="">context_entry(Context) -> context_entry()</name>
       <fsummary>Create an context entry</fsummary>
       <type>
         <v>Context = string()</v>
@@ -273,8 +273,8 @@ word() = 0..65535
     </func>
 
     <func>
-      <name>write_context_config(Dir, Conf) -> ok</name>
-      <name>write_context_config(Dir, Hdr, Conf) -> ok</name>
+      <name since="">write_context_config(Dir, Conf) -> ok</name>
+      <name since="">write_context_config(Dir, Hdr, Conf) -> ok</name>
       <fsummary>Write the agent context(s) to the config file</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -297,7 +297,7 @@ word() = 0..65535
     </func>
 
     <func>
-      <name>append_context_config(Dir, Conf) -> ok</name>
+      <name since="">append_context_config(Dir, Conf) -> ok</name>
       <fsummary>Append the agent context(s) to the config file</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -317,7 +317,7 @@ word() = 0..65535
     </func>
 
     <func>
-      <name>read_context_config(Dir) -> Conf</name>
+      <name since="">read_context_config(Dir) -> Conf</name>
       <fsummary>Read the agent context config from the config file</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -336,8 +336,8 @@ word() = 0..65535
     </func>
 
     <func>
-      <name>community_entry(CommunityIndex) -> community_entry()</name>
-      <name>community_entry(CommunityIndex, CommunityName, SecName, ContextName, TransportTag) -> community_entry()</name>
+      <name since="">community_entry(CommunityIndex) -> community_entry()</name>
+      <name since="">community_entry(CommunityIndex, CommunityName, SecName, ContextName, TransportTag) -> community_entry()</name>
       <fsummary>Create an community entry</fsummary>
       <type>
         <v>CommunityIndex = string()</v>
@@ -364,8 +364,8 @@ word() = 0..65535
     </func>
 
     <func>
-      <name>write_community_config(Dir, Conf) -> ok</name>
-      <name>write_community_config(Dir, Hdr, Conf) -> ok</name>
+      <name since="">write_community_config(Dir, Conf) -> ok</name>
+      <name since="">write_community_config(Dir, Hdr, Conf) -> ok</name>
       <fsummary>Write the agent community config to the config file</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -388,7 +388,7 @@ word() = 0..65535
     </func>
 
     <func>
-      <name>append_community_config(Dir, Conf) -> ok</name>
+      <name since="">append_community_config(Dir, Conf) -> ok</name>
       <fsummary>Append the agent community config to the config file</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -408,7 +408,7 @@ word() = 0..65535
     </func>
 
     <func>
-      <name>read_community_config(Dir) -> Conf</name>
+      <name since="">read_community_config(Dir) -> Conf</name>
       <fsummary>Read the agent community config from the config file</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -427,10 +427,10 @@ word() = 0..65535
     </func>
 
     <func>
-      <name>target_addr_entry(Name, Domain, Addr, TagList, ParamsName, EngineId) -> target_addr_entry()</name>
-      <name>target_addr_entry(Name, Domain, Addr, TagList, ParamsName, EngineId, TMask) -> target_addr_entry()</name>
-      <name>target_addr_entry(Name, Domain, Addr, TagList, ParamsName, EngineId, TMask, MaxMessageSize) -> target_addr_entry()</name>
-      <name>target_addr_entry(Name, Domain, Addr, Timeout, RetryCount, TagList, ParamsName, EngineId, TMask, MaxMessageSize) -> target_addr_entry()</name>
+      <name since="">target_addr_entry(Name, Domain, Addr, TagList, ParamsName, EngineId) -> target_addr_entry()</name>
+      <name since="OTP 17.3">target_addr_entry(Name, Domain, Addr, TagList, ParamsName, EngineId, TMask) -> target_addr_entry()</name>
+      <name since="">target_addr_entry(Name, Domain, Addr, TagList, ParamsName, EngineId, TMask, MaxMessageSize) -> target_addr_entry()</name>
+      <name since="">target_addr_entry(Name, Domain, Addr, Timeout, RetryCount, TagList, ParamsName, EngineId, TMask, MaxMessageSize) -> target_addr_entry()</name>
       <fsummary>Create an target_addr entry</fsummary>
       <type>
         <v>Name = string()</v>
@@ -464,8 +464,8 @@ word() = 0..65535
     </func>
 
     <func>
-      <name>write_target_addr_config(Dir, Conf) -> ok</name>
-      <name>write_target_addr_config(Dir, Hdr, Conf) -> ok</name>
+      <name since="">write_target_addr_config(Dir, Conf) -> ok</name>
+      <name since="">write_target_addr_config(Dir, Hdr, Conf) -> ok</name>
       <fsummary>Write the agent target_addr config to the config file</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -488,7 +488,7 @@ word() = 0..65535
     </func>
 
     <func>
-      <name>append_target_addr_config(Dir, Conf) -> ok</name>
+      <name since="">append_target_addr_config(Dir, Conf) -> ok</name>
       <fsummary>Append the agent target_addr config to the config file</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -508,7 +508,7 @@ word() = 0..65535
     </func>
 
     <func>
-      <name>read_target_addr_config(Dir) -> Conf</name>
+      <name since="">read_target_addr_config(Dir) -> Conf</name>
       <fsummary>Read the agent target_addr config from the config file</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -527,9 +527,9 @@ word() = 0..65535
     </func>
 
     <func>
-      <name>target_params_entry(Name, Vsn) -> target_params_entry()</name>
-      <name>target_params_entry(Name, Vsn, SecName, SecLevel) -> target_params_entry()</name>
-      <name>target_params_entry(Name, MPModel, SecModel, SecName, SecLevel) -> target_params_entry()</name>
+      <name since="">target_params_entry(Name, Vsn) -> target_params_entry()</name>
+      <name since="">target_params_entry(Name, Vsn, SecName, SecLevel) -> target_params_entry()</name>
+      <name since="">target_params_entry(Name, MPModel, SecModel, SecName, SecLevel) -> target_params_entry()</name>
       <fsummary>Create an target_params entry</fsummary>
       <type>
         <v>Name = string()</v>
@@ -564,8 +564,8 @@ word() = 0..65535
     </func>
 
     <func>
-      <name>write_target_params_config(Dir, Conf) -> ok</name>
-      <name>write_target_params_config(Dir, Hdr, Conf) -> ok</name>
+      <name since="">write_target_params_config(Dir, Conf) -> ok</name>
+      <name since="">write_target_params_config(Dir, Hdr, Conf) -> ok</name>
       <fsummary>Write the agent target_params config to the config file</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -588,7 +588,7 @@ word() = 0..65535
     </func>
 
     <func>
-      <name>append_target_params_config(Dir, Conf) -> ok</name>
+      <name since="">append_target_params_config(Dir, Conf) -> ok</name>
       <fsummary>Append the agent target_params config to the config file</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -608,7 +608,7 @@ word() = 0..65535
     </func>
 
     <func>
-      <name>read_target_params_config(Dir) -> Conf</name>
+      <name since="">read_target_params_config(Dir) -> Conf</name>
       <fsummary>Read the agent target_params config from the config file</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -627,10 +627,10 @@ word() = 0..65535
     </func>
 
     <func>
-      <name>vacm_s2g_entry(SecModel, SecName, GroupName) -> vacm_s2g_entry()</name>
-      <name>vacm_acc_entry(GroupName, Prefix, SecModel, SecLevel, Match, ReadView, WriteView, NotifyView) -> vacm_acc_entry()</name>
-      <name>vacm_vtf_entry(ViewIndex, ViewSubtree) -> vacm_vtf_entry()</name>
-      <name>vacm_vtf_entry(ViewIndex, ViewSubtree, ViewStatus, ViewMask) -> vacm_vtf_entry()</name>
+      <name since="">vacm_s2g_entry(SecModel, SecName, GroupName) -> vacm_s2g_entry()</name>
+      <name since="">vacm_acc_entry(GroupName, Prefix, SecModel, SecLevel, Match, ReadView, WriteView, NotifyView) -> vacm_acc_entry()</name>
+      <name since="">vacm_vtf_entry(ViewIndex, ViewSubtree) -> vacm_vtf_entry()</name>
+      <name since="">vacm_vtf_entry(ViewIndex, ViewSubtree, ViewStatus, ViewMask) -> vacm_vtf_entry()</name>
       <fsummary>Create an vacm entry</fsummary>
       <type>
         <v>SecModel = v1 | v2c | usm</v>
@@ -665,8 +665,8 @@ word() = 0..65535
     </func>
 
     <func>
-      <name>write_vacm_config(Dir, Conf) -> ok</name>
-      <name>write_vacm_config(Dir, Hdr, Conf) -> ok</name>
+      <name since="">write_vacm_config(Dir, Conf) -> ok</name>
+      <name since="">write_vacm_config(Dir, Hdr, Conf) -> ok</name>
       <fsummary>Write the agent vacm config to the config file</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -690,7 +690,7 @@ word() = 0..65535
     </func>
 
     <func>
-      <name>append_vacm_config(Dir, Conf) -> ok</name>
+      <name since="">append_vacm_config(Dir, Conf) -> ok</name>
       <fsummary>Append the agent vacm config to the config file</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -710,7 +710,7 @@ word() = 0..65535
     </func>
 
     <func>
-      <name>read_vacm_config(Dir) -> Conf</name>
+      <name since="">read_vacm_config(Dir) -> Conf</name>
       <fsummary>Read the agent vacm config from the config file</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -729,8 +729,8 @@ word() = 0..65535
     </func>
 
     <func>
-      <name>usm_entry(EngineId) -> usm_entry()</name>
-      <name>usm_entry(EngineID, UserName, SecName, Clone, AuthP, AuthKeyC, OwnAuthKeyC, PrivP, PrivKeyC, OwnPrivKeyC, Public, AuthKey, PrivKey) -> usm_entry()</name>
+      <name since="">usm_entry(EngineId) -> usm_entry()</name>
+      <name since="">usm_entry(EngineID, UserName, SecName, Clone, AuthP, AuthKeyC, OwnAuthKeyC, PrivP, PrivKeyC, OwnPrivKeyC, Public, AuthKey, PrivKey) -> usm_entry()</name>
       <fsummary>Create an usm entry</fsummary>
       <type>
         <v>EngineId = string()</v>
@@ -762,8 +762,8 @@ word() = 0..65535
     </func>
 
     <func>
-      <name>write_usm_config(Dir, Conf) -> ok</name>
-      <name>write_usm_config(Dir, Hdr, Conf) -> ok</name>
+      <name since="">write_usm_config(Dir, Conf) -> ok</name>
+      <name since="">write_usm_config(Dir, Hdr, Conf) -> ok</name>
       <fsummary>Write the agent usm config to the config file</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -786,7 +786,7 @@ word() = 0..65535
     </func>
 
     <func>
-      <name>append_usm_config(Dir, Conf) -> ok</name>
+      <name since="">append_usm_config(Dir, Conf) -> ok</name>
       <fsummary>Append the agent usm config to the config file</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -805,7 +805,7 @@ word() = 0..65535
     </func>
 
     <func>
-      <name>read_usm_config(Dir) -> Conf</name>
+      <name since="">read_usm_config(Dir) -> Conf</name>
       <fsummary>Read the agent usm config from the config file</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -824,7 +824,7 @@ word() = 0..65535
     </func>
 
     <func>
-      <name>notify_entry(Name, Tag, Type) -> notify_entry()</name>
+      <name since="">notify_entry(Name, Tag, Type) -> notify_entry()</name>
       <fsummary>Create an notify entry</fsummary>
       <type>
         <v>Name = string()</v>
@@ -845,8 +845,8 @@ word() = 0..65535
     </func>
 
     <func>
-      <name>write_notify_config(Dir, Conf) -> ok</name>
-      <name>write_notify_config(Dir, Hdr, Conf) -> ok</name>
+      <name since="">write_notify_config(Dir, Conf) -> ok</name>
+      <name since="">write_notify_config(Dir, Hdr, Conf) -> ok</name>
       <fsummary>Write the agent notify config to the config file</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -869,7 +869,7 @@ word() = 0..65535
     </func>
 
     <func>
-      <name>append_notify_config(Dir, Conf) -> ok</name>
+      <name since="">append_notify_config(Dir, Conf) -> ok</name>
       <fsummary>Append the agent notify config to the config file</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -889,7 +889,7 @@ word() = 0..65535
     </func>
 
     <func>
-      <name>read_notify_config(Dir) -> Conf</name>
+      <name since="">read_notify_config(Dir) -> Conf</name>
       <fsummary>Read the agent notify config from the config file</fsummary>
       <type>
         <v>Dir = string()</v>
diff --git a/lib/snmp/doc/src/snmpa_discovery_handler.xml b/lib/snmp/doc/src/snmpa_discovery_handler.xml
index 0ea72a880c..21b8746c11 100644
--- a/lib/snmp/doc/src/snmpa_discovery_handler.xml
+++ b/lib/snmp/doc/src/snmpa_discovery_handler.xml
@@ -32,7 +32,7 @@
     <rev></rev>
     <file>snmpa_discovery_handler.xml</file>
   </header>
-  <module>snmpa_discovery_handler</module>
+  <module since="">snmpa_discovery_handler</module>
   <modulesummary>Behaviour module for the SNMP agent discovery handler.</modulesummary>
   <description>
     <p>This module defines the behaviour of the agent discovery
@@ -51,7 +51,7 @@
 
   <funcs>
     <func>
-      <name>stage1_finish(TargetName, ManagerEngineID, ExtraInfo) -> ignore | {ok, usm_entry() | [usm_entry()]} | {ok, usm_entry() | [usm_entry()], NewExtraInfo}</name>
+      <name since="">stage1_finish(TargetName, ManagerEngineID, ExtraInfo) -> ignore | {ok, usm_entry() | [usm_entry()]} | {ok, usm_entry() | [usm_entry()], NewExtraInfo}</name>
       <fsummary>Discovery stage 1 finish</fsummary>
       <type>
         <v>TargetName = string()</v>
diff --git a/lib/snmp/doc/src/snmpa_error.xml b/lib/snmp/doc/src/snmpa_error.xml
index 7cc4a3513d..6e6761b7a5 100644
--- a/lib/snmp/doc/src/snmpa_error.xml
+++ b/lib/snmp/doc/src/snmpa_error.xml
@@ -32,7 +32,7 @@
     <rev></rev>
     <file>snmpa_error.xml</file>
   </header>
-  <module>snmpa_error</module>
+  <module since="">snmpa_error</module>
   <modulesummary>Functions for Reporting SNMP Errors</modulesummary>
   <description>
     <marker id="desc"></marker>
@@ -57,7 +57,7 @@
   </description>
   <funcs>
     <func>
-      <name>config_err(Format, Args) -> void()</name>
+      <name since="">config_err(Format, Args) -> void()</name>
       <fsummary>Called if a configuration error occurs</fsummary>
       <type>
         <v>Format = string()</v>
@@ -76,7 +76,7 @@
     </func>
 
     <func>
-      <name>user_err(Format, Args) -> void()</name>
+      <name since="">user_err(Format, Args) -> void()</name>
       <fsummary>Called if a user related error occurs</fsummary>
       <type>
         <v>Format = string()</v>
diff --git a/lib/snmp/doc/src/snmpa_error_io.xml b/lib/snmp/doc/src/snmpa_error_io.xml
index bcb2688646..d78e09ff13 100644
--- a/lib/snmp/doc/src/snmpa_error_io.xml
+++ b/lib/snmp/doc/src/snmpa_error_io.xml
@@ -32,7 +32,7 @@
     <rev></rev>
     <file>snmpa_error_io.xml</file>
   </header>
-  <module>snmpa_error_io</module>
+  <module since="">snmpa_error_io</module>
   <modulesummary>Functions for Reporting SNMP Errors on stdio</modulesummary>
   <description>
     <p>The module <c>snmpa_error_io</c> implements the 
@@ -52,7 +52,7 @@
   </description>
   <funcs>
     <func>
-      <name>config_err(Format, Args) -> void()</name>
+      <name since="">config_err(Format, Args) -> void()</name>
       <fsummary>Called if a configuration error occurs</fsummary>
       <type>
         <v>Format = string()</v>
@@ -68,7 +68,7 @@
       </desc>
     </func>
     <func>
-      <name>user_err(Format, Args) -> void()</name>
+      <name since="">user_err(Format, Args) -> void()</name>
       <fsummary>Called if a user related error occurs</fsummary>
       <type>
         <v>Format = string()</v>
diff --git a/lib/snmp/doc/src/snmpa_error_logger.xml b/lib/snmp/doc/src/snmpa_error_logger.xml
index 4feb2e7f32..b0565a6839 100644
--- a/lib/snmp/doc/src/snmpa_error_logger.xml
+++ b/lib/snmp/doc/src/snmpa_error_logger.xml
@@ -32,7 +32,7 @@
     <rev></rev>
     <file>snmpa_error_logger.xml</file>
   </header>
-  <module>snmpa_error_logger</module>
+  <module since="">snmpa_error_logger</module>
   <modulesummary>Functions for Reporting SNMP Errors through the error_logger</modulesummary>
   <description>
     <p>The module <c>snmpa_error_logger</c> implements the 
@@ -54,7 +54,7 @@
   </description>
   <funcs>
     <func>
-      <name>config_err(Format, Args) -> void()</name>
+      <name since="">config_err(Format, Args) -> void()</name>
       <fsummary>Called if a configuration error occurs</fsummary>
       <type>
         <v>Format = string()</v>
@@ -70,7 +70,7 @@
       </desc>
     </func>
     <func>
-      <name>user_err(Format, Args) -> void()</name>
+      <name since="">user_err(Format, Args) -> void()</name>
       <fsummary>Called if a user related error occurs</fsummary>
       <type>
         <v>Format = string()</v>
diff --git a/lib/snmp/doc/src/snmpa_error_report.xml b/lib/snmp/doc/src/snmpa_error_report.xml
index 282d9b4e59..f08dc1df23 100644
--- a/lib/snmp/doc/src/snmpa_error_report.xml
+++ b/lib/snmp/doc/src/snmpa_error_report.xml
@@ -32,7 +32,7 @@
     <rev></rev>
     <file>snmpa_error_report.xml</file>
   </header>
-  <module>snmpa_error_report</module>
+  <module since="">snmpa_error_report</module>
   <modulesummary>Behaviour module for reporting SNMP agent errors</modulesummary>
   <description>
     <marker id="desc"></marker>
@@ -52,7 +52,7 @@
   </description>
   <funcs>
     <func>
-      <name>config_err(Format, Args) -> void()</name>
+      <name since="">config_err(Format, Args) -> void()</name>
       <fsummary>Called if a configuration error occurs</fsummary>
       <type>
         <v>Format = string()</v>
@@ -68,7 +68,7 @@
       </desc>
     </func>
     <func>
-      <name>user_err(Format, Args) -> void()</name>
+      <name since="">user_err(Format, Args) -> void()</name>
       <fsummary>Called if a user related error occurs</fsummary>
       <type>
         <v>Format = string()</v>
diff --git a/lib/snmp/doc/src/snmpa_local_db.xml b/lib/snmp/doc/src/snmpa_local_db.xml
index ac8d466ab3..229f22ab70 100644
--- a/lib/snmp/doc/src/snmpa_local_db.xml
+++ b/lib/snmp/doc/src/snmpa_local_db.xml
@@ -32,7 +32,7 @@
     <rev></rev>
     <file>snmpa_local_db.xml</file>
   </header>
-  <module>snmpa_local_db</module>
+  <module since="">snmpa_local_db</module>
   <modulesummary>The SNMP built-in database</modulesummary>
   <description>
     <p>The module <c>snmpa_local_db</c> contains functions for
@@ -86,7 +86,7 @@
   </section>
   <funcs>
     <func>
-      <name>dump() -> ok | {error, Reason}</name>
+      <name since="">dump() -> ok | {error, Reason}</name>
       <fsummary>Dump the database to disk</fsummary>
       <type>
         <v>Reason = term()</v>
@@ -97,7 +97,7 @@
       </desc>
     </func>
     <func>
-      <name>match(NameDb, Pattern)</name>
+      <name since="">match(NameDb, Pattern)</name>
       <fsummary>Perform a match on the table</fsummary>
       <desc>
         <p>Performs an ets/dets matching on the table. 
@@ -106,9 +106,9 @@
       </desc>
     </func>
     <func>
-      <name>print()</name>
-      <name>print(TableName)</name>
-      <name>print(TableName, Db)</name>
+      <name since="">print()</name>
+      <name since="">print(TableName)</name>
+      <name since="">print(TableName, Db)</name>
       <fsummary>Print the database to screen</fsummary>
       <type>
         <v>TableName = atom()</v>
@@ -124,7 +124,7 @@
       </desc>
     </func>
     <func>
-      <name>table_create(NameDb) -> bool()</name>
+      <name since="">table_create(NameDb) -> bool()</name>
       <fsummary>Create a table</fsummary>
       <desc>
         <p>Creates a table. If the table already exist, the old copy
@@ -135,7 +135,7 @@
       </desc>
     </func>
     <func>
-      <name>table_create_row(NameDb, RowIndex, Row) -> bool()</name>
+      <name since="">table_create_row(NameDb, RowIndex, Row) -> bool()</name>
       <fsummary>Create a row in a table</fsummary>
       <type>
         <v>Row = {Val1, Val2, ..., ValN}</v>
@@ -147,28 +147,28 @@
       </desc>
     </func>
     <func>
-      <name>table_delete(NameDb) -> void()</name>
+      <name since="">table_delete(NameDb) -> void()</name>
       <fsummary>Delete a table</fsummary>
       <desc>
         <p>Deletes a table.</p>
       </desc>
     </func>
     <func>
-      <name>table_delete_row(NameDb, RowIndex) -> bool()</name>
+      <name since="">table_delete_row(NameDb, RowIndex) -> bool()</name>
       <fsummary>Delete the row in the table</fsummary>
       <desc>
         <p>Deletes the row in the table.</p>
       </desc>
     </func>
     <func>
-      <name>table_exists(NameDb) -> bool()</name>
+      <name since="">table_exists(NameDb) -> bool()</name>
       <fsummary>Check if a table exists</fsummary>
       <desc>
         <p>Checks if a table exists.</p>
       </desc>
     </func>
     <func>
-      <name>table_get_row(NameDb, RowIndex) -> Row | undefined</name>
+      <name since="">table_get_row(NameDb, RowIndex) -> Row | undefined</name>
       <fsummary>Get a row from the table</fsummary>
       <type>
         <v>Row = {Val1, Val2, ..., ValN}</v>
diff --git a/lib/snmp/doc/src/snmpa_mib_data.xml b/lib/snmp/doc/src/snmpa_mib_data.xml
index 1a73c9b634..b849a2826a 100644
--- a/lib/snmp/doc/src/snmpa_mib_data.xml
+++ b/lib/snmp/doc/src/snmpa_mib_data.xml
@@ -30,7 +30,7 @@
     <file>snmpa_mib_data.xml</file>
   </header>
 
-  <module>snmpa_mib_data</module>
+  <module since="OTP R16B01">snmpa_mib_data</module>
   <modulesummary>Behaviour module for the SNMP agent mib-server 
   data module.</modulesummary>
   <description>
@@ -108,7 +108,7 @@
 
   <funcs>
     <func>
-      <name>Module:new(Storage) -> State</name>
+      <name since="OTP R16B01">Module:new(Storage) -> State</name>
       <fsummary>Create new (mib-server) data instance</fsummary>
       <type>
         <v>Storage = mib_storage()</v>
@@ -122,7 +122,7 @@
     </func>
 
     <func>
-      <name>Module:close(State) -> void()</name>
+      <name since="OTP R16B01">Module:close(State) -> void()</name>
       <fsummary>Close the mib-server data instance</fsummary>
       <type>
         <v>State = term()</v>
@@ -135,7 +135,7 @@
     </func>
 
     <func>
-      <name>Module:sync(State) -> void()</name>
+      <name since="OTP R16B01">Module:sync(State) -> void()</name>
       <fsummary>Synchronize to disc</fsummary>
       <type>
         <v>State = term()</v>
@@ -151,7 +151,7 @@
     </func>
 
     <func>
-      <name>Module:load_mib(State, Filename, MeOverride, TeOverride) -> {ok, NewState} | {error, Reason}</name>
+      <name since="OTP R16B01">Module:load_mib(State, Filename, MeOverride, TeOverride) -> {ok, NewState} | {error, Reason}</name>
       <fsummary>Load a mib into the mib-server</fsummary>
       <type>
         <v>State = NewState = term()</v>
@@ -172,7 +172,7 @@
     </func>
 
     <func>
-      <name>Module:unload_mib(State, Filename) -> {ok, NewState} | {error, Reason}</name>
+      <name since="OTP R16B01">Module:unload_mib(State, Filename) -> {ok, NewState} | {error, Reason}</name>
       <fsummary>Unload mib from the mib-server</fsummary>
       <type>
         <v>State = NewState = term()</v>
@@ -188,7 +188,7 @@
     </func>
 
     <func>
-      <name>Module:lookup(State, Oid) -> Reply</name>
+      <name since="OTP R16B01">Module:lookup(State, Oid) -> Reply</name>
       <fsummary>Find the mib-entry corresponding to the Oid</fsummary>
       <type>
         <v>State = term()</v>
@@ -210,7 +210,7 @@
     </func>
 
     <func>
-      <name>Module:next(State, Oid, MibView) -> Reply</name>
+      <name since="OTP R16B01">Module:next(State, Oid, MibView) -> Reply</name>
       <fsummary>Finds the lexicographically next oid</fsummary>
       <type>
         <v>State = term()</v>
@@ -227,7 +227,7 @@
     </func>
 
     <func>
-      <name>Module:register_subagent(State, Oid, Pid) -> Reply</name>
+      <name since="OTP R16B01">Module:register_subagent(State, Oid, Pid) -> Reply</name>
       <fsummary>Register the subagent</fsummary>
       <type>
         <v>State = NewState = term()</v>
@@ -245,7 +245,7 @@
     </func>
 
     <func>
-      <name>Module:unregister_subagent(State, PidOrOid) -> Reply</name>
+      <name since="OTP R16B01">Module:unregister_subagent(State, PidOrOid) -> Reply</name>
       <fsummary>Unregister the subagent</fsummary>
       <type>
         <v>State = NewState = term()</v>
@@ -266,7 +266,7 @@
     </func>
 
     <func>
-      <name>Module:dump(State, Destination) -> Reply</name>
+      <name since="OTP R16B01">Module:dump(State, Destination) -> Reply</name>
       <fsummary>Unregister the subagent</fsummary>
       <type>
         <v>State = term()</v>
@@ -284,7 +284,7 @@
     </func>
 
     <func>
-      <name>Module:which_mib(State, Oid) -> Reply</name>
+      <name since="OTP R16B01">Module:which_mib(State, Oid) -> Reply</name>
       <fsummary>Retrieve the mib file for an oid()</fsummary>
       <type>
         <v>State = term()</v>
@@ -301,7 +301,7 @@
     </func>
 
     <func>
-      <name>Module:which_mibs(State) -> Reply</name>
+      <name since="OTP R16B01">Module:which_mibs(State) -> Reply</name>
       <fsummary>Retrieve all loaded mib files</fsummary>
       <type>
         <v>State = term()</v>
@@ -317,7 +317,7 @@
     </func>
 
     <func>
-      <name>Module:whereis_mib(State, MibName) -> Reply</name>
+      <name since="OTP R16B01">Module:whereis_mib(State, MibName) -> Reply</name>
       <fsummary>Retrieve the mib file for the mib</fsummary>
       <type>
         <v>State = term()</v>
@@ -334,7 +334,7 @@
     </func>
 
     <func>
-      <name>Module:info(State) -> Reply</name>
+      <name since="OTP R16B01">Module:info(State) -> Reply</name>
       <fsummary>Retrieve misc info for the mib data</fsummary>
       <type>
         <v>State = term()</v>
@@ -352,7 +352,7 @@
     </func>
 
     <func>
-      <name>Module:backup(State, BackupDir) -> Reply</name>
+      <name since="OTP R16B01">Module:backup(State, BackupDir) -> Reply</name>
       <fsummary>Perform a backup of the mib-server data</fsummary>
       <type>
         <v>State = term()</v>
@@ -370,7 +370,7 @@
     </func>
 
     <func>
-      <name>Module:code_change(Destination, Vsn, Extra, State) -> NewState</name>
+      <name since="OTP R16B01">Module:code_change(Destination, Vsn, Extra, State) -> NewState</name>
       <fsummary>Perform a code-change</fsummary>
       <type>
         <v>Destination = up | down</v>
diff --git a/lib/snmp/doc/src/snmpa_mib_storage.xml b/lib/snmp/doc/src/snmpa_mib_storage.xml
index 58ce2167ec..ee2b009e77 100644
--- a/lib/snmp/doc/src/snmpa_mib_storage.xml
+++ b/lib/snmp/doc/src/snmpa_mib_storage.xml
@@ -30,7 +30,7 @@
     <file>snmpa_mib_storage.xml</file>
   </header>
 
-  <module>snmpa_mib_storage</module>
+  <module since="OTP R16B01">snmpa_mib_storage</module>
   <modulesummary>
     Behaviour module for the SNMP agent mib storage. 
   </modulesummary>
@@ -96,7 +96,7 @@
 
   <funcs>
     <func>
-      <name>Module:open(Name, RecordName, Fields, Type, Options) -> {ok, TabId} | {error, Reason}</name>
+      <name since="OTP R16B01">Module:open(Name, RecordName, Fields, Type, Options) -> {ok, TabId} | {error, Reason}</name>
       <fsummary>Create new (mib-server) data instance</fsummary>
       <type>
         <v>Name = atom()</v>
@@ -122,7 +122,7 @@
     </func>
 
     <func>
-      <name>Module:close(TabId) -> void()</name>
+      <name since="OTP R16B01">Module:close(TabId) -> void()</name>
       <fsummary>Close the mib-storage table</fsummary>
       <type>
         <v>State = term()</v>
@@ -135,7 +135,7 @@
     </func>
 
     <func>
-      <name>Module:read(TabId, Key) -> false | {value, Record}</name>
+      <name since="OTP R16B01">Module:read(TabId, Key) -> false | {value, Record}</name>
       <fsummary>Read a record from the mib-storage table</fsummary>
       <type>
         <v>TabId = term()</v>
@@ -150,7 +150,7 @@
     </func>
 
     <func>
-      <name>Module:write(TabId, Record) -> ok | {error, Reason}</name>
+      <name since="OTP R16B01">Module:write(TabId, Record) -> ok | {error, Reason}</name>
       <fsummary>Write a record to the mib-storage table</fsummary>
       <type>
         <v>TabId = term()</v>
@@ -165,7 +165,7 @@
     </func>
 
     <func>
-      <name>Module:delete(TabId) -> void()</name>
+      <name since="OTP R16B01">Module:delete(TabId) -> void()</name>
       <fsummary>Delete an entire mib-storage table</fsummary>
       <type>
         <v>TabId = term()</v>
@@ -178,7 +178,7 @@
     </func>
 
     <func>
-      <name>Module:delete(TabId, Key) -> ok | {error, Reason}</name>
+      <name since="OTP R16B01">Module:delete(TabId, Key) -> ok | {error, Reason}</name>
       <fsummary>Delete a record from the mib-storage table</fsummary>
       <type>
         <v>TabId = term()</v>
@@ -193,7 +193,7 @@
     </func>
 
     <func>
-      <name>Module:match_object(TabId, Pattern) -> {ok, Recs} | {error, Reason}</name>
+      <name since="OTP R16B01">Module:match_object(TabId, Pattern) -> {ok, Recs} | {error, Reason}</name>
       <fsummary>Search the mib-storage table for record matching pattern</fsummary>
       <type>
         <v>TabId = term()</v>
@@ -210,7 +210,7 @@
     </func>
 
     <func>
-      <name>Module:match_delete(TabId, Pattern) -> {ok, Recs} | {error, Reason}</name>
+      <name since="OTP R16B01">Module:match_delete(TabId, Pattern) -> {ok, Recs} | {error, Reason}</name>
       <fsummary>Delete records in the mib-storage table matching pattern</fsummary>
       <type>
         <v>TabId = term()</v>
@@ -228,7 +228,7 @@
     </func>
 
     <func>
-      <name>Module:tab2list(TabId) -> Recs</name>
+      <name since="OTP R16B01">Module:tab2list(TabId) -> Recs</name>
       <fsummary>Return all records of the mib-storage table</fsummary>
       <type>
         <v>TabId = term()</v>
@@ -243,7 +243,7 @@
     </func>
 
     <func>
-      <name>Module:info(TabId) -> {ok, Info} | {error, Reason}</name>
+      <name since="OTP R16B01">Module:info(TabId) -> {ok, Info} | {error, Reason}</name>
       <fsummary>Returns information about the mib-storage table. </fsummary>
       <type>
         <v>TabId = term()</v>
@@ -259,7 +259,7 @@
     </func>
 
     <func>
-      <name>Module:sync(TabId) -> void()</name>
+      <name since="OTP R16B01">Module:sync(TabId) -> void()</name>
       <fsummary>Synchronize mib-storage table</fsummary>
       <type>
         <v>TabId = term()</v>
@@ -273,7 +273,7 @@
     </func>
 
     <func>
-      <name>Module:backup(TabId, BackupDir) -> ok | {error, Reason}</name>
+      <name since="OTP R16B01">Module:backup(TabId, BackupDir) -> ok | {error, Reason}</name>
       <fsummary>Perform a backup of the mib-storage table</fsummary>
       <type>
         <v>TabId = term()</v>
diff --git a/lib/snmp/doc/src/snmpa_mpd.xml b/lib/snmp/doc/src/snmpa_mpd.xml
index a39c087c20..d76a9c4a94 100644
--- a/lib/snmp/doc/src/snmpa_mpd.xml
+++ b/lib/snmp/doc/src/snmpa_mpd.xml
@@ -32,7 +32,7 @@
     <rev></rev>
     <file>snmpa_mpd.xml</file>
   </header>
-  <module>snmpa_mpd</module>
+  <module since="">snmpa_mpd</module>
   <modulesummary>Message Processing and Dispatch module for the SNMP agent</modulesummary>
   <description>
     <p>The module <c>snmpa_mpd</c> implements the version independent
@@ -52,7 +52,7 @@
 
   <funcs>
     <func>
-      <name>init(Vsns) -> mpd_state()</name>
+      <name since="">init(Vsns) -> mpd_state()</name>
       <fsummary>Initialize the MPD module</fsummary>
       <type>
         <v>Vsns = [Vsn]</v>
@@ -70,8 +70,8 @@
     </func>
 
     <func>
-      <name>process_packet(Packet, From, State, NoteStore, Log) -> {ok, Vsn, Pdu, PduMS, ACMData} | {discarded, Reason} | {discovery, DiscoPacket}</name>
-      <name>process_packet(Packet, From, LocalEngineID, State, NoteStore, Log) -> {ok, Vsn, Pdu, PduMS, ACMData} | {discarded, Reason} | {discovery, DiscoPacket}</name>
+      <name since="OTP 17.3">process_packet(Packet, From, State, NoteStore, Log) -> {ok, Vsn, Pdu, PduMS, ACMData} | {discarded, Reason} | {discovery, DiscoPacket}</name>
+      <name since="OTP R14B">process_packet(Packet, From, LocalEngineID, State, NoteStore, Log) -> {ok, Vsn, Pdu, PduMS, ACMData} | {discarded, Reason} | {discovery, DiscoPacket}</name>
       <fsummary>Process a packet received from the network</fsummary>
       <type>
         <v>Packet = binary()</v>
@@ -108,8 +108,8 @@
     </func>
 
     <func>
-      <name>generate_response_msg(Vsn, RePdu, Type, ACMData, Log) -> {ok, Packet} | {discarded, Reason}</name>
-      <name>generate_response_msg(Vsn, RePdu, Type, ACMData, LocalEngineID, Log) -> {ok, Packet} | {discarded, Reason}</name>
+      <name since="OTP R14B">generate_response_msg(Vsn, RePdu, Type, ACMData, Log) -> {ok, Packet} | {discarded, Reason}</name>
+      <name since="OTP R14B">generate_response_msg(Vsn, RePdu, Type, ACMData, LocalEngineID, Log) -> {ok, Packet} | {discarded, Reason}</name>
       <fsummary>Generate a response packet to be sent to the network</fsummary>
       <type>
         <v>Vsn = 'version-1' | 'version-2' | 'version-3'</v>
@@ -136,8 +136,8 @@
     </func>
 
     <func>
-      <name>generate_msg(Vsn, NoteStore, Pdu, MsgData, To) -> {ok, PacketsAndAddresses} | {discarded, Reason}</name>
-      <name>generate_msg(Vsn, NoteStore, Pdu, MsgData, LocalEngineID, To) -> {ok, PacketsAndAddresses} | {discarded, Reason}</name>
+      <name since="OTP R14B">generate_msg(Vsn, NoteStore, Pdu, MsgData, To) -> {ok, PacketsAndAddresses} | {discarded, Reason}</name>
+      <name since="OTP R14B">generate_msg(Vsn, NoteStore, Pdu, MsgData, LocalEngineID, To) -> {ok, PacketsAndAddresses} | {discarded, Reason}</name>
       <fsummary>Generate a request message to be sent to the network</fsummary>
       <type>
         <v>Vsn = 'version-1' | 'version-2' | 'version-3'</v>
@@ -185,7 +185,7 @@
     </func>
 
     <func>
-      <name>process_taddrs(TDests) -> Dests</name>
+      <name since="OTP 17.3">process_taddrs(TDests) -> Dests</name>
       <fsummary>Transform addresses from internal MIB format to a less internal
       </fsummary>
       <type>
@@ -211,7 +211,7 @@
     </func>
 
     <func>
-      <name>discarded_pdu(Variable) -> void()</name>
+      <name since="">discarded_pdu(Variable) -> void()</name>
       <fsummary>Increment the variable associated with a discarded pdu</fsummary>
       <type>
         <v>Variable = atom()</v>
diff --git a/lib/snmp/doc/src/snmpa_network_interface.xml b/lib/snmp/doc/src/snmpa_network_interface.xml
index d4d4989e90..3e79df11b1 100644
--- a/lib/snmp/doc/src/snmpa_network_interface.xml
+++ b/lib/snmp/doc/src/snmpa_network_interface.xml
@@ -32,7 +32,7 @@
     <rev></rev>
     <file>snmpa_network_interface.xml</file>
   </header>
-  <module>snmpa_network_interface</module>
+  <module since="">snmpa_network_interface</module>
   <modulesummary>Behaviour module for the SNMP agent network interface.</modulesummary>
   <description>
     <p>This module defines the behaviour of the agent network
@@ -68,7 +68,7 @@
 
   <funcs>
     <func>
-      <name>start_link(Prio, NoteStore, MasterAgent, Opts) -> {ok, Pid} | {error, Reason}</name>
+      <name since="">start_link(Prio, NoteStore, MasterAgent, Opts) -> {ok, Pid} | {error, Reason}</name>
       <fsummary>Start-link the network interface process</fsummary>
       <type>
         <v>Prio        = priority()</v>
@@ -93,7 +93,7 @@
     </func>
 
     <func>
-      <name>info(Pid) -> [{Key, Value}]</name>
+      <name since="">info(Pid) -> [{Key, Value}]</name>
       <fsummary>Return information about the running network interface process</fsummary>
       <type>
         <v>Pid = pid()</v>
@@ -112,7 +112,7 @@
     </func>
 
     <func>
-      <name>verbosity(Pid, Verbosity) -> void()</name>
+      <name since="">verbosity(Pid, Verbosity) -> void()</name>
       <fsummary>Change the verbosity of a running network interface process</fsummary>
       <type>
         <v>Pid       = pid()</v>
@@ -126,7 +126,7 @@
     </func>
 
     <func>
-      <name>get_log_type(Pid) -> {ok, LogType} | {error, Reason}</name>
+      <name since="">get_log_type(Pid) -> {ok, LogType} | {error, Reason}</name>
       <fsummary>Get the Audit Trail Log type</fsummary>
       <type>
         <v>Pid     = pid()</v>
@@ -147,7 +147,7 @@
     </func>
 
     <func>
-      <name>set_log_type(Pid, NewType) -> {ok, OldType} | {error, Reason}</name>
+      <name since="">set_log_type(Pid, NewType) -> {ok, OldType} | {error, Reason}</name>
       <fsummary>Change the Audit Trail Log type</fsummary>
       <type>
         <v>Pid     = pid()</v>
diff --git a/lib/snmp/doc/src/snmpa_network_interface_filter.xml b/lib/snmp/doc/src/snmpa_network_interface_filter.xml
index 7cd08f8935..02c7d291dd 100644
--- a/lib/snmp/doc/src/snmpa_network_interface_filter.xml
+++ b/lib/snmp/doc/src/snmpa_network_interface_filter.xml
@@ -32,7 +32,7 @@
     <rev></rev>
     <file>snmpa_network_interface_filter.xml</file>
   </header>
-  <module>snmpa_network_interface_filter</module>
+  <module since="">snmpa_network_interface_filter</module>
   <modulesummary>Behaviour module for the SNMP agent network-interface filter.</modulesummary>
   <description>
     <p>This module defines the behaviour of the agent network interface
@@ -101,7 +101,7 @@ pdu_type() = 'get-request' | 'get-next-request' | 'get-response' |
   </section>
   <funcs>
     <func>
-      <name>accept_recv(Domain, Addr) -> boolean()</name>
+      <name since="">accept_recv(Domain, Addr) -> boolean()</name>
       <fsummary>Shall the received message be accepted</fsummary>
       <type>
 	<v>Domain = transportDomain()</v>
@@ -116,7 +116,7 @@ pdu_type() = 'get-request' | 'get-next-request' | 'get-response' |
       </desc>
     </func>
     <func>
-      <name>accept_send(Domain, Addr) -> boolean()</name>
+      <name since="">accept_send(Domain, Addr) -> boolean()</name>
       <fsummary>Shall the message be sent</fsummary>
       <type>
 	<v>Domain = transportDomain()</v>
@@ -131,7 +131,7 @@ pdu_type() = 'get-request' | 'get-next-request' | 'get-response' |
       </desc>
     </func>
     <func>
-      <name>accept_recv_pdu(Domain, Addr, PduType) -> boolean()</name>
+      <name since="">accept_recv_pdu(Domain, Addr, PduType) -> boolean()</name>
       <fsummary>Shall the received pdu be accepted</fsummary>
       <type>
 	<v>Domain = transportDomain()</v>
@@ -148,7 +148,7 @@ pdu_type() = 'get-request' | 'get-next-request' | 'get-response' |
       </desc>
     </func>
     <func>
-      <name>accept_send_pdu(Targets, PduType) -> Reply</name>
+      <name since="">accept_send_pdu(Targets, PduType) -> Reply</name>
       <fsummary>Shall the pdu be sent</fsummary>
       <type>
         <v>Targets = targets()</v>
diff --git a/lib/snmp/doc/src/snmpa_notification_delivery_info_receiver.xml b/lib/snmp/doc/src/snmpa_notification_delivery_info_receiver.xml
index cbae158544..5dad372710 100644
--- a/lib/snmp/doc/src/snmpa_notification_delivery_info_receiver.xml
+++ b/lib/snmp/doc/src/snmpa_notification_delivery_info_receiver.xml
@@ -34,7 +34,7 @@
     <rev></rev>
     <file>snmpa_notification_delivery_info_receiver.xml</file>
   </header>
-  <module>snmpa_notification_delivery_info_receiver</module>
+  <module since="">snmpa_notification_delivery_info_receiver</module>
   <modulesummary>
     Behaviour module for the SNMP agent notification delivery 
     information receiver.
@@ -76,7 +76,7 @@
 
   <funcs>
     <func>
-      <name>delivery_targets(Tag, Targets, Extra) -> void()</name>
+      <name since="">delivery_targets(Tag, Targets, Extra) -> void()</name>
       <fsummary>Inform about target addresses</fsummary>
       <type>
         <v>Tag = term()</v>
@@ -97,7 +97,7 @@
     </func>
 
     <func>
-      <name>delivery_info(Tag, Target, DeliveryResult, Extra) -> void()</name>
+      <name since="">delivery_info(Tag, Target, DeliveryResult, Extra) -> void()</name>
       <fsummary>Inform about delivery result</fsummary>
       <type>
         <v>Tag = term()</v>
diff --git a/lib/snmp/doc/src/snmpa_notification_filter.xml b/lib/snmp/doc/src/snmpa_notification_filter.xml
index 0f16ba4440..902412ccc5 100644
--- a/lib/snmp/doc/src/snmpa_notification_filter.xml
+++ b/lib/snmp/doc/src/snmpa_notification_filter.xml
@@ -32,7 +32,7 @@
     <rev></rev>
     <file>snmpa_notification_filter.xml</file>
   </header>
-  <module>snmpa_notification_filter</module>
+  <module since="">snmpa_notification_filter</module>
   <modulesummary>Behaviour module for the SNMP agent notification filters.</modulesummary>
   <description>
     <p>This module defines the behaviour of the agent notification
@@ -51,7 +51,7 @@
   </description>
   <funcs>
     <func>
-      <name>handle_notification(Notif, Data) -> Reply</name>
+      <name since="">handle_notification(Notif, Data) -> Reply</name>
       <fsummary>Handle a notification</fsummary>
       <type>
         <v>Reply = send | {send, NewNotif} | dont_send</v>
diff --git a/lib/snmp/doc/src/snmpa_supervisor.xml b/lib/snmp/doc/src/snmpa_supervisor.xml
index 86c6fbc350..e11cde390f 100644
--- a/lib/snmp/doc/src/snmpa_supervisor.xml
+++ b/lib/snmp/doc/src/snmpa_supervisor.xml
@@ -32,7 +32,7 @@
     <rev></rev>
     <file>snmpa_supervisor.xml</file>
   </header>
-  <module>snmpa_supervisor</module>
+  <module since="">snmpa_supervisor</module>
   <modulesummary>A supervisor for the SNMP agent Processes</modulesummary>
   <description>
     <p>This is the top supervisor for the agent part of the SNMP 
@@ -42,7 +42,7 @@
   </description>
   <funcs>
     <func>
-      <name>start_sub_sup(Opts) -> {ok, pid()} | {error, {already_started, pid()}} | {error, Reason}</name>
+      <name since="">start_sub_sup(Opts) -> {ok, pid()} | {error, {already_started, pid()}} | {error, Reason}</name>
       <fsummary>Start the SNMP supervisor for sub-agents only</fsummary>
       <type>
         <v>Opts = [opt()]</v>
@@ -60,7 +60,7 @@
       </desc>
     </func>
     <func>
-      <name>start_master_sup(Opts) -> {ok, pid()} |  {error, {already_started, pid()}} | {error, Reason}</name>
+      <name since="">start_master_sup(Opts) -> {ok, pid()} |  {error, {already_started, pid()}} | {error, Reason}</name>
       <fsummary>Start the SNMP supervisor for all agents</fsummary>
       <type>
         <v>Opts = [opt()]</v>
@@ -82,7 +82,7 @@
       </desc>
     </func>
     <func>
-      <name>start_sub_agent(ParentAgent,Subtree,Mibs) -> {ok, pid()} | {error, Reason}</name>
+      <name since="">start_sub_agent(ParentAgent,Subtree,Mibs) -> {ok, pid()} | {error, Reason}</name>
       <fsummary>Start a sub-agent</fsummary>
       <type>
         <v>ParentAgent = pid()</v>
@@ -99,7 +99,7 @@
       </desc>
     </func>
     <func>
-      <name>stop_sub_agent(SubAgent) -> ok | no_such_child</name>
+      <name since="">stop_sub_agent(SubAgent) -> ok | no_such_child</name>
       <fsummary>Stop a sub-agent</fsummary>
       <type>
         <v>SubAgent = pid()</v>
diff --git a/lib/snmp/doc/src/snmpc.xml b/lib/snmp/doc/src/snmpc.xml
index aba51bb500..b22b32a133 100644
--- a/lib/snmp/doc/src/snmpc.xml
+++ b/lib/snmp/doc/src/snmpc.xml
@@ -32,7 +32,7 @@
     <rev></rev>
     <file>snmpc.xml</file>
   </header>
-  <module>snmpc</module>
+  <module since="">snmpc</module>
   <modulesummary>Interface Functions to the SNMP toolkit MIB compiler</modulesummary>
   <description>
     <p>The module <c>snmpc</c> contains interface functions to the 
@@ -43,8 +43,8 @@
 
   <funcs>
     <func>
-      <name>compile(File)</name>
-      <name>compile(File, Options) -> {ok, BinFileName} | {error, Reason}</name>
+      <name since="">compile(File)</name>
+      <name since="">compile(File, Options) -> {ok, BinFileName} | {error, Reason}</name>
       <fsummary>Compile the specified MIB</fsummary>
       <type>
         <v>File = string()</v>
@@ -236,7 +236,7 @@
     </func>
 
     <func>
-      <name>is_consistent(Mibs) -> ok | {error, Reason}</name>
+      <name since="">is_consistent(Mibs) -> ok | {error, Reason}</name>
       <fsummary>Check for OID conflicts between MIBs</fsummary>
       <type>
         <v>Mibs = [MibName]</v>
@@ -252,7 +252,7 @@
     </func>
 
     <func>
-      <name>mib_to_hrl(MibName) -> ok | {error, Reason}</name>
+      <name since="">mib_to_hrl(MibName) -> ok | {error, Reason}</name>
       <fsummary>Generate constants for the objects in the MIB</fsummary>
       <type>
         <v>MibName = string()</v>
diff --git a/lib/snmp/doc/src/snmpm.xml b/lib/snmp/doc/src/snmpm.xml
index be4cd58a1a..c45df98ee0 100644
--- a/lib/snmp/doc/src/snmpm.xml
+++ b/lib/snmp/doc/src/snmpm.xml
@@ -32,7 +32,7 @@
     <rev></rev>
     <file>snmpm.xml</file>
   </header>
-  <module>snmpm</module>
+  <module since="">snmpm</module>
   <modulesummary>Interface functions to the SNMP toolkit manager</modulesummary>
   <description>
     <p>The module <c>snmpm</c> contains interface functions to the 
@@ -77,7 +77,7 @@ sec_level() = noAuthNoPriv | authNoPriv | authPriv
   </section>
   <funcs>
     <func>
-      <name>monitor() -> Ref</name>
+      <name since="">monitor() -> Ref</name>
       <fsummary>Monitor the snmp manager</fsummary>
       <type>
         <v>Ref = reference()</v>
@@ -92,7 +92,7 @@ sec_level() = noAuthNoPriv | authNoPriv | authPriv
     </func>
 
     <func>
-      <name>demonitor(Ref) -> void()</name>
+      <name since="">demonitor(Ref) -> void()</name>
       <fsummary>Turn off monitoring of the snmp manager</fsummary>
       <type>
         <v>Ref = reference()</v>
@@ -105,7 +105,7 @@ sec_level() = noAuthNoPriv | authNoPriv | authPriv
     </func>
 
     <func>
-      <name>notify_started(Timeout) -> Pid</name>
+      <name since="">notify_started(Timeout) -> Pid</name>
       <fsummary>Request to be notified when manager started</fsummary>
       <type>
         <v>Timeout = integer()</v>
@@ -148,7 +148,7 @@ sec_level() = noAuthNoPriv | authNoPriv | authPriv
     </func>
 
     <func>
-      <name>cancel_notify_started(Pid) -> void()</name>
+      <name since="">cancel_notify_started(Pid) -> void()</name>
       <fsummary>Cancel request to be notified when manager started</fsummary>
       <type>
         <v>Pid = pid()</v>
@@ -161,8 +161,8 @@ sec_level() = noAuthNoPriv | authNoPriv | authPriv
     </func>
 
     <func>
-      <name>register_user(Id, Module, Data) -> ok | {error, Reason}</name>
-      <name>register_user(Id, Module, Data, DefaultAgentConfig) -> ok | {error, Reason}</name>
+      <name since="">register_user(Id, Module, Data) -> ok | {error, Reason}</name>
+      <name since="">register_user(Id, Module, Data, DefaultAgentConfig) -> ok | {error, Reason}</name>
       <fsummary>Register a user of the manager</fsummary>
       <type>
         <v>Id = term()</v>
@@ -204,8 +204,8 @@ sec_level = noAuthNoPriv | authNoPriv | authPriv
     </func>
 
     <func>
-      <name>register_user_monitor(Id, Module, Data) -> ok | {error, Reason}</name>
-      <name>register_user_monitor(Id, Module, Data, DefaultAgentConfig) -> ok | {error, Reason}</name>
+      <name since="">register_user_monitor(Id, Module, Data) -> ok | {error, Reason}</name>
+      <name since="">register_user_monitor(Id, Module, Data, DefaultAgentConfig) -> ok | {error, Reason}</name>
       <fsummary>Register a monitored user of the manager</fsummary>
       <type>
         <v>Id = term()</v>
@@ -252,7 +252,7 @@ sec_level = noAuthNoPriv | authNoPriv | authPriv
     </func>
 
     <func>
-      <name>unregister_user(Id) -> ok | {error, Reason}</name>
+      <name since="">unregister_user(Id) -> ok | {error, Reason}</name>
       <fsummary>Unregister the user</fsummary>
       <type>
         <v>Id = term()</v>
@@ -265,7 +265,7 @@ sec_level = noAuthNoPriv | authNoPriv | authPriv
     </func>
 
     <func>
-      <name>which_users() -> Users</name>
+      <name since="">which_users() -> Users</name>
       <fsummary>Get a list of all users</fsummary>
       <type>
         <v>Users = [UserId]</v>
@@ -279,7 +279,7 @@ sec_level = noAuthNoPriv | authNoPriv | authPriv
     </func>
 
     <func>
-      <name>register_agent(UserId, TargetName, Config) -> ok | {error, Reason}</name>
+      <name since="">register_agent(UserId, TargetName, Config) -> ok | {error, Reason}</name>
       <fsummary>Register this agent</fsummary>
       <type>
         <v>UserId = term()</v>
@@ -325,7 +325,7 @@ sec_level = noAuthNoPriv | authNoPriv | authPriv
     </func>
 
     <func>
-      <name>unregister_agent(UserId, TargetName) -> ok | {error, Reason}</name>
+      <name since="">unregister_agent(UserId, TargetName) -> ok | {error, Reason}</name>
       <fsummary>Unregister the user</fsummary>
       <type>
         <v>UserId = term()</v>
@@ -339,7 +339,7 @@ sec_level = noAuthNoPriv | authNoPriv | authPriv
     </func>
 
     <func>
-      <name>agent_info(TargetName, Item) -> {ok, Val} | {error, Reason}</name>
+      <name since="">agent_info(TargetName, Item) -> {ok, Val} | {error, Reason}</name>
       <fsummary>Retrieve agent config</fsummary>
       <type>
         <v>TargetName = target_name()</v>
@@ -354,8 +354,8 @@ sec_level = noAuthNoPriv | authNoPriv | authPriv
     </func>
 
     <func>
-      <name>update_agent_info(UserId, TargetName, Info) -> ok | {error, Reason}</name>
-      <name>update_agent_info(UserId, TargetName, Item, Val) -> ok | {error, Reason}</name>
+      <name since="OTP R14B04">update_agent_info(UserId, TargetName, Info) -> ok | {error, Reason}</name>
+      <name since="">update_agent_info(UserId, TargetName, Item, Val) -> ok | {error, Reason}</name>
       <fsummary>Update agent config</fsummary>
       <type>
         <v>UserId = term()</v>
@@ -379,8 +379,8 @@ sec_level = noAuthNoPriv | authNoPriv | authPriv
     </func>
 
     <func>
-      <name>which_agents() -> Agents</name>
-      <name>which_agents(UserId) -> Agents</name>
+      <name since="">which_agents() -> Agents</name>
+      <name since="">which_agents(UserId) -> Agents</name>
       <fsummary>List the registered agents</fsummary>
       <type>
         <v>UserId = term()</v>
@@ -396,7 +396,7 @@ sec_level = noAuthNoPriv | authNoPriv | authPriv
     </func>
 
     <func>
-      <name>register_usm_user(EngineID, UserName, Conf) -> ok | {error, Reason}</name>
+      <name since="">register_usm_user(EngineID, UserName, Conf) -> ok | {error, Reason}</name>
       <fsummary>Register this USM user</fsummary>
       <type>
         <v>EngineID = string()</v>
@@ -427,7 +427,7 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     </func>
 
     <func>
-      <name>unregister_usm_user(EngineID, UserName) -> ok | {error, Reason}</name>
+      <name since="">unregister_usm_user(EngineID, UserName) -> ok | {error, Reason}</name>
       <fsummary>Unregister this USM user</fsummary>
       <type>
         <v>EngineID = string()</v>
@@ -442,7 +442,7 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     </func>
 
     <func>
-      <name>usm_user_info(EngineID, UserName, Item) -> {ok, Val} | {error, Reason}</name>
+      <name since="">usm_user_info(EngineID, UserName, Item) -> {ok, Val} | {error, Reason}</name>
       <fsummary>Retrieve usm user config</fsummary>
       <type>
         <v>EngineID = string()</v>
@@ -458,7 +458,7 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     </func>
 
     <func>
-      <name>update_usm_user_info(EngineID, UserName, Item, Val) -> ok | {error, Reason}</name>
+      <name since="">update_usm_user_info(EngineID, UserName, Item, Val) -> ok | {error, Reason}</name>
       <fsummary>Update agent config</fsummary>
       <type>
         <v>EngineID = string()</v>
@@ -475,7 +475,7 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     </func>
 
     <func>
-      <name>which_usm_users() -> UsmUsers</name>
+      <name since="">which_usm_users() -> UsmUsers</name>
       <fsummary>List all the registered usm users</fsummary>
       <type>
         <v>UsmUsers = [{EngineID,UserName}]</v>
@@ -490,7 +490,7 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     </func>
 
     <func>
-      <name>which_usm_users(EngineID) -> UsmUsers</name>
+      <name since="">which_usm_users(EngineID) -> UsmUsers</name>
       <fsummary>List the registered usm users</fsummary>
       <type>
         <v>UsmUsers = [UserName]</v>
@@ -505,8 +505,8 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     </func>
 
     <func>
-      <name>sync_get2(UserId, TargetName, Oids) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
-      <name>sync_get2(UserId, TargetName, Oids, SendOpts) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
+      <name since="OTP R14B03">sync_get2(UserId, TargetName, Oids) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
+      <name since="OTP R14B03">sync_get2(UserId, TargetName, Oids, SendOpts) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
       <fsummary>Synchronous <c>get-request</c></fsummary>
       <type>
         <v>UserId = term()</v>
@@ -559,11 +559,11 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     </func>
 
    <func>
-      <name>sync_get(UserId, TargetName, Oids) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
-      <name>sync_get(UserId, TargetName, ContextName, Oids) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
-      <name>sync_get(UserId, TargetName, Oids, Timeout) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
-      <name>sync_get(UserId, TargetName, ContextName, Oids, Timeout) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
-      <name>sync_get(UserId, TargetName, ContextName, Oids, Timeout, ExtraInfo) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
+      <name since="">sync_get(UserId, TargetName, Oids) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
+      <name since="">sync_get(UserId, TargetName, ContextName, Oids) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
+      <name since="">sync_get(UserId, TargetName, Oids, Timeout) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
+      <name since="">sync_get(UserId, TargetName, ContextName, Oids, Timeout) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
+      <name since="">sync_get(UserId, TargetName, ContextName, Oids, Timeout, ExtraInfo) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
       <fsummary>Synchronous <c>get-request</c></fsummary>
       <type>
         <v>UserId = term()</v>
@@ -605,8 +605,8 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     </func>
 
     <func>
-      <name>async_get2(UserId, TargetName, Oids) -> {ok, ReqId} | {error, Reason}</name>
-      <name>async_get2(UserId, TargetName, Oids, SendOpts) -> {ok, ReqId} | {error, Reason}</name>
+      <name since="OTP R14B03">async_get2(UserId, TargetName, Oids) -> {ok, ReqId} | {error, Reason}</name>
+      <name since="OTP R14B03">async_get2(UserId, TargetName, Oids, SendOpts) -> {ok, ReqId} | {error, Reason}</name>
       <fsummary>Asynchronous <c>get-request</c></fsummary>
       <type>
         <v>UserId = term()</v>
@@ -647,11 +647,11 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     </func>
 
     <func>
-      <name>async_get(UserId, TargetName, Oids) -> {ok, ReqId} | {error, Reason}</name>
-      <name>async_get(UserId, TargetName, ContextName, Oids) -> {ok, ReqId} | {error, Reason}</name>
-      <name>async_get(UserId, TargetName, Oids, Expire) -> {ok, ReqId} | {error, Reason}</name>
-      <name>async_get(UserId, TargetName, ContextName, Oids, Expire) -> {ok, ReqId} | {error, Reason}</name>
-      <name>async_get(UserId, TargetName, ContextName, Oids, Expire, ExtraInfo) -> {ok, ReqId} | {error, Reason}</name>
+      <name since="">async_get(UserId, TargetName, Oids) -> {ok, ReqId} | {error, Reason}</name>
+      <name since="">async_get(UserId, TargetName, ContextName, Oids) -> {ok, ReqId} | {error, Reason}</name>
+      <name since="">async_get(UserId, TargetName, Oids, Expire) -> {ok, ReqId} | {error, Reason}</name>
+      <name since="">async_get(UserId, TargetName, ContextName, Oids, Expire) -> {ok, ReqId} | {error, Reason}</name>
+      <name since="">async_get(UserId, TargetName, ContextName, Oids, Expire, ExtraInfo) -> {ok, ReqId} | {error, Reason}</name>
       <fsummary>Asynchronous <c>get-request</c></fsummary>
       <type>
         <v>UserId = term()</v>
@@ -683,8 +683,8 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     </func>
 
     <func>
-      <name>sync_get_next2(UserId, TargetName, Oids) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
-      <name>sync_get_next2(UserId, TargetName, Oids, SendOpts) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
+      <name since="OTP R14B03">sync_get_next2(UserId, TargetName, Oids) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
+      <name since="OTP R14B03">sync_get_next2(UserId, TargetName, Oids, SendOpts) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
       <fsummary>Synchronous <c>get-next-request</c></fsummary>
       <type>
         <v>UserId = term()</v>
@@ -737,11 +737,11 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     </func>
 
     <func>
-      <name>sync_get_next(UserId, TargetName, Oids) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
-      <name>sync_get_next(UserId, TargetName, ContextName, Oids) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
-      <name>sync_get_next(UserId, TargetName, Oids, Timeout) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
-      <name>sync_get_next(UserId, TargetName, ContextName, Oids, Timeout) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
-      <name>sync_get_next(UserId, TargetName, ContextName, Oids, Timeout, ExtraInfo) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
+      <name since="">sync_get_next(UserId, TargetName, Oids) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
+      <name since="">sync_get_next(UserId, TargetName, ContextName, Oids) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
+      <name since="">sync_get_next(UserId, TargetName, Oids, Timeout) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
+      <name since="">sync_get_next(UserId, TargetName, ContextName, Oids, Timeout) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
+      <name since="">sync_get_next(UserId, TargetName, ContextName, Oids, Timeout, ExtraInfo) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
       <fsummary>Synchronous <c>get-next-request</c></fsummary>
       <type>
         <v>UserId = term()</v>
@@ -775,8 +775,8 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     </func>
 
     <func>
-      <name>async_get_next2(UserId, TargetName, Oids) -> {ok, ReqId} | {error, Reason}</name>
-      <name>async_get_next2(UserId, TargetName, Oids, SendOpts) -> {ok, ReqId} | {error, Reason}</name>
+      <name since="OTP R14B03">async_get_next2(UserId, TargetName, Oids) -> {ok, ReqId} | {error, Reason}</name>
+      <name since="OTP R14B03">async_get_next2(UserId, TargetName, Oids, SendOpts) -> {ok, ReqId} | {error, Reason}</name>
       <fsummary>Asynchronous <c>get-next-request</c></fsummary>
       <type>
         <v>UserId = term()</v>
@@ -814,11 +814,11 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     </func>
 
     <func>
-      <name>async_get_next(UserId, TargetName, Oids) -> {ok, ReqId} | {error, Reason}</name>
-      <name>async_get_next(UserId, TargetName, ContextName, Oids) -> {ok, ReqId} | {error, Reason}</name>
-      <name>async_get_next(UserId, TargetName, Oids, Expire) -> {ok, ReqId} | {error, Reason}</name>
-      <name>async_get_next(UserId, TargetName, ContextName, Oids, Expire) -> {ok, ReqId} | {error, Reason}</name>
-      <name>async_get_next(UserId, TargetName, ContextName, Oids, Expire, ExtraInfo) -> {ok, ReqId} | {error, Reason}</name>
+      <name since="">async_get_next(UserId, TargetName, Oids) -> {ok, ReqId} | {error, Reason}</name>
+      <name since="">async_get_next(UserId, TargetName, ContextName, Oids) -> {ok, ReqId} | {error, Reason}</name>
+      <name since="">async_get_next(UserId, TargetName, Oids, Expire) -> {ok, ReqId} | {error, Reason}</name>
+      <name since="">async_get_next(UserId, TargetName, ContextName, Oids, Expire) -> {ok, ReqId} | {error, Reason}</name>
+      <name since="">async_get_next(UserId, TargetName, ContextName, Oids, Expire, ExtraInfo) -> {ok, ReqId} | {error, Reason}</name>
       <fsummary>Asynchronous <c>get-next-request</c></fsummary>
       <type>
         <v>UserId = term()</v>
@@ -849,8 +849,8 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     </func>
 
     <func>
-      <name>sync_set2(UserId, TargetName, VarsAndVals) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
-      <name>sync_set2(UserId, TargetName, VarsAndVals, SendOpts) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
+      <name since="OTP R14B03">sync_set2(UserId, TargetName, VarsAndVals) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
+      <name since="OTP R14B03">sync_set2(UserId, TargetName, VarsAndVals, SendOpts) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
       <fsummary>Synchronous <c>set-request</c></fsummary>
       <type>
         <v>UserId = term()</v>
@@ -906,11 +906,11 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     </func>
 
     <func>
-      <name>sync_set(UserId, TargetName, VarsAndVals) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
-      <name>sync_set(UserId, TargetName, ContextName, VarsAndVals) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
-      <name>sync_set(UserId, TargetName, VarsAndVals, Timeout) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
-      <name>sync_set(UserId, TargetName, ContextName, VarsAndVals, Timeout) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
-      <name>sync_set(UserId, TargetName, ContextName, VarsAndVals, Timeout, ExtraInfo) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
+      <name since="">sync_set(UserId, TargetName, VarsAndVals) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
+      <name since="">sync_set(UserId, TargetName, ContextName, VarsAndVals) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
+      <name since="">sync_set(UserId, TargetName, VarsAndVals, Timeout) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
+      <name since="">sync_set(UserId, TargetName, ContextName, VarsAndVals, Timeout) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
+      <name since="">sync_set(UserId, TargetName, ContextName, VarsAndVals, Timeout, ExtraInfo) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
       <fsummary>Synchronous <c>set-request</c></fsummary>
       <type>
         <v>UserId = term()</v>
@@ -946,8 +946,8 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     </func>
 
     <func>
-      <name>async_set2(UserId, TargetName, VarsAndVals) -> {ok, ReqId} | {error, Reason}</name>
-      <name>async_set2(UserId, TargetName, VarsAndVals, SendOpts) -> {ok, ReqId} | {error, Reason}</name>
+      <name since="OTP R14B03">async_set2(UserId, TargetName, VarsAndVals) -> {ok, ReqId} | {error, Reason}</name>
+      <name since="OTP R14B03">async_set2(UserId, TargetName, VarsAndVals, SendOpts) -> {ok, ReqId} | {error, Reason}</name>
       <fsummary>Asynchronous <c>set-request</c></fsummary>
       <type>
         <v>UserId = term()</v>
@@ -990,11 +990,11 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     </func>
 
     <func>
-      <name>async_set(UserId, TargetName, VarsAndVals) -> {ok, ReqId} | {error, Reason}</name>
-      <name>async_set(UserId, TargetName, ContextName, VarsAndVals) -> {ok, ReqId} | {error, Reason}</name>
-      <name>async_set(UserId, TargetName, VarsAndVals, Expire) -> {ok, ReqId} | {error, Reason}</name>
-      <name>async_set(UserId, TargetName, ContextName, VarsAndVals, Expire) -> {ok, ReqId} | {error, Reason}</name>
-      <name>async_set(UserId, TargetName, ContextName, VarsAndVals, Expire, ExtraInfo) -> {ok, ReqId} | {error, Reason}</name>
+      <name since="">async_set(UserId, TargetName, VarsAndVals) -> {ok, ReqId} | {error, Reason}</name>
+      <name since="">async_set(UserId, TargetName, ContextName, VarsAndVals) -> {ok, ReqId} | {error, Reason}</name>
+      <name since="">async_set(UserId, TargetName, VarsAndVals, Expire) -> {ok, ReqId} | {error, Reason}</name>
+      <name since="">async_set(UserId, TargetName, ContextName, VarsAndVals, Expire) -> {ok, ReqId} | {error, Reason}</name>
+      <name since="">async_set(UserId, TargetName, ContextName, VarsAndVals, Expire, ExtraInfo) -> {ok, ReqId} | {error, Reason}</name>
       <fsummary>Asynchronous <c>set-request</c></fsummary>
       <type>
         <v>UserId = term()</v>
@@ -1026,8 +1026,8 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     </func>
 
     <func>
-      <name>sync_get_bulk2(UserId, TragetName, NonRep, MaxRep, Oids) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
-      <name>sync_get_bulk2(UserId, TragetName, NonRep, MaxRep, Oids, SendOpts) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
+      <name since="OTP R14B03">sync_get_bulk2(UserId, TragetName, NonRep, MaxRep, Oids) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
+      <name since="OTP R14B03">sync_get_bulk2(UserId, TragetName, NonRep, MaxRep, Oids, SendOpts) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
       <fsummary>Synchronous <c>get-bulk-request</c></fsummary>
       <type>
         <v>UserId = term()</v>
@@ -1082,11 +1082,11 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     </func>
 
     <func>
-      <name>sync_get_bulk(UserId, TragetName, NonRep, MaxRep, Oids) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
-      <name>sync_get_bulk(UserId, TragetName, NonRep, MaxRep, ContextName, Oids) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
-      <name>sync_get_bulk(UserId, TragetName, NonRep, MaxRep, Oids, Timeout) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
-      <name>sync_get_bulk(UserId, TragetName, NonRep, MaxRep, ContextName, Oids, Timeout) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
-      <name>sync_get_bulk(UserId, TragetName, NonRep, MaxRep, ContextName, Oids, Timeout, ExtraInfo) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
+      <name since="">sync_get_bulk(UserId, TragetName, NonRep, MaxRep, Oids) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
+      <name since="">sync_get_bulk(UserId, TragetName, NonRep, MaxRep, ContextName, Oids) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
+      <name since="">sync_get_bulk(UserId, TragetName, NonRep, MaxRep, Oids, Timeout) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
+      <name since="">sync_get_bulk(UserId, TragetName, NonRep, MaxRep, ContextName, Oids, Timeout) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
+      <name since="">sync_get_bulk(UserId, TragetName, NonRep, MaxRep, ContextName, Oids, Timeout, ExtraInfo) -> {ok, SnmpReply, Remaining} | {error, Reason}</name>
       <fsummary>Synchronous <c>get-bulk-request</c></fsummary>
       <type>
         <v>UserId = term()</v>
@@ -1121,8 +1121,8 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     </func>
 
     <func>
-      <name>async_get_bulk2(UserId, TargetName, NonRep, MaxRep, Oids) -> {ok, ReqId} | {error, Reason}</name>
-      <name>async_get_bulk2(UserId, TargetName, NonRep, MaxRep, Oids, SendOpts) -> {ok, ReqId} | {error, Reason}</name>
+      <name since="OTP R14B03">async_get_bulk2(UserId, TargetName, NonRep, MaxRep, Oids) -> {ok, ReqId} | {error, Reason}</name>
+      <name since="OTP R14B03">async_get_bulk2(UserId, TargetName, NonRep, MaxRep, Oids, SendOpts) -> {ok, ReqId} | {error, Reason}</name>
       <fsummary>Asynchronous <c>get-bulk-request</c></fsummary>
       <type>
         <v>UserId = term()</v>
@@ -1162,11 +1162,11 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     </func>
 
     <func>
-      <name>async_get_bulk(UserId, TargetName, NonRep, MaxRep, Oids) -> {ok, ReqId} | {error, Reason}</name>
-      <name>async_get_bulk(UserId, TargetName, NonRep, MaxRep, ContextName, Oids) -> {ok, ReqId} | {error, Reason}</name>
-      <name>async_get_bulk(UserId, TargetName, NonRep, MaxRep, Oids, Expire) -> {ok, ReqId} | {error, Reason}</name>
-      <name>async_get_bulk(UserId, TargetName, NonRep, MaxRep, ContextName, Oids, Expire) -> {ok, ReqId} | {error, Reason}</name>
-      <name>async_get_bulk(UserId, TargetName, NonRep, MaxRep, ContextName, Oids, Expire, ExtraInfo) -> {ok, ReqId} | {error, Reason}</name>
+      <name since="">async_get_bulk(UserId, TargetName, NonRep, MaxRep, Oids) -> {ok, ReqId} | {error, Reason}</name>
+      <name since="">async_get_bulk(UserId, TargetName, NonRep, MaxRep, ContextName, Oids) -> {ok, ReqId} | {error, Reason}</name>
+      <name since="">async_get_bulk(UserId, TargetName, NonRep, MaxRep, Oids, Expire) -> {ok, ReqId} | {error, Reason}</name>
+      <name since="">async_get_bulk(UserId, TargetName, NonRep, MaxRep, ContextName, Oids, Expire) -> {ok, ReqId} | {error, Reason}</name>
+      <name since="">async_get_bulk(UserId, TargetName, NonRep, MaxRep, ContextName, Oids, Expire, ExtraInfo) -> {ok, ReqId} | {error, Reason}</name>
       <fsummary>Asynchronous <c>get-bulk-request</c></fsummary>
       <type>
         <v>UserId = term()</v>
@@ -1199,7 +1199,7 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     </func>
 
     <func>
-      <name>cancel_async_request(UserId, ReqId) -> ok | {error, Reason}</name>
+      <name since="">cancel_async_request(UserId, ReqId) -> ok | {error, Reason}</name>
       <fsummary>Cancel a asynchronous request</fsummary>
       <type>
         <v>UserId = term()</v>
@@ -1214,15 +1214,15 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     </func>
 
     <func>
-      <name>log_to_txt(LogDir)</name>
-      <name>log_to_txt(LogDir, Block | Mibs)</name>
-      <name>log_to_txt(LogDir, Mibs, Block | OutFile) -> ok | {ok, Cnt} | {error, Reason}</name>
-      <name>log_to_txt(LogDir, Mibs, OutFile, Block | LogName) ->  ok | {ok, Cnt} | {error, Reason}</name>
-      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, Block | LogFile) ->  ok | {ok, Cnt} | {error, Reason}</name>
-      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block | Start) ->  ok | {ok, Cnt} | {error, Reason}</name>
-      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block, Start)  -> ok | {ok, Cnt} | {error, Reason}</name>
-      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Start, Stop)  -> ok | {ok, Cnt} | {error, Reason}</name>
-      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block, Start, Stop)  -> ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="OTP R16B03">log_to_txt(LogDir)</name>
+      <name since="">log_to_txt(LogDir, Block | Mibs)</name>
+      <name since="">log_to_txt(LogDir, Mibs, Block | OutFile) -> ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="">log_to_txt(LogDir, Mibs, OutFile, Block | LogName) ->  ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="">log_to_txt(LogDir, Mibs, OutFile, LogName, Block | LogFile) ->  ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="">log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block | Start) ->  ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="">log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block, Start)  -> ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="">log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Start, Stop)  -> ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="OTP R16B03">log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block, Start, Stop)  -> ok | {ok, Cnt} | {error, Reason}</name>
       <fsummary>Convert an Audit Trail Log to text format</fsummary>
       <type>
         <v>LogDir = string()</v>
@@ -1257,15 +1257,15 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     </func>
 
     <func>
-      <name>log_to_io(LogDir) -> ok | {ok, Cnt} | {error, Reason}</name>
-      <name>log_to_io(LogDir, Block | Mibs) -> ok | {ok, Cnt} | {error, Reason}</name>
-      <name>log_to_io(LogDir, Mibs) -> ok | {error, Reason}</name>
-      <name>log_to_io(LogDir, Mibs, Block | LogName) ->  ok | {ok, Cnt} | {error, Reason}</name>
-      <name>log_to_io(LogDir, Mibs, LogName, Block | LogFile) ->  ok | {ok, Cnt} | {error, Reason}</name>
-      <name>log_to_io(LogDir, Mibs, LogName, LogFile, Block | Start) ->  ok | {ok, Cnt} | {error, Reason}</name>
-      <name>log_to_io(LogDir, Mibs, LogName, LogFile, Block, Start)  -> ok | {ok, Cnt} | {error, Reason}</name>
-      <name>log_to_io(LogDir, Mibs, LogName, LogFile, Start, Stop)  -> ok | {ok, Cnt} | {error, Reason}</name>
-      <name>log_to_io(LogDir, Mibs, LogName, LogFile, Block, Start, Stop)  -> ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="OTP R15B01">log_to_io(LogDir) -> ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="OTP R15B01">log_to_io(LogDir, Block | Mibs) -> ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="OTP R15B01">log_to_io(LogDir, Mibs) -> ok | {error, Reason}</name>
+      <name since="OTP R15B01">log_to_io(LogDir, Mibs, Block | LogName) ->  ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="OTP R15B01">log_to_io(LogDir, Mibs, LogName, Block | LogFile) ->  ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="OTP R15B01">log_to_io(LogDir, Mibs, LogName, LogFile, Block | Start) ->  ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="OTP R15B01">log_to_io(LogDir, Mibs, LogName, LogFile, Block, Start)  -> ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="OTP R15B01">log_to_io(LogDir, Mibs, LogName, LogFile, Start, Stop)  -> ok | {ok, Cnt} | {error, Reason}</name>
+      <name since="OTP R16B03">log_to_io(LogDir, Mibs, LogName, LogFile, Block, Start, Stop)  -> ok | {ok, Cnt} | {error, Reason}</name>
       <fsummary>Convert an Audit Trail Log to text format</fsummary>
       <type>
         <v>LogDir = string()</v>
@@ -1299,7 +1299,7 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     </func>
 
     <func>
-      <name>change_log_size(NewSize) -> ok | {error, Reason}</name>
+      <name since="">change_log_size(NewSize) -> ok | {error, Reason}</name>
       <fsummary>Change the size of the Audit Trail Log</fsummary>
       <type>
         <v>NewSize = {MaxBytes, MaxFiles}</v>
@@ -1321,7 +1321,7 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     </func>
 
     <func>
-      <name>set_log_type(NewType) -> {ok, OldType} | {error, Reason}</name>
+      <name since="">set_log_type(NewType) -> {ok, OldType} | {error, Reason}</name>
       <fsummary>Change the Audit Trail Log type</fsummary>
       <type>
         <v>NewType = OldType = atl_type()</v>
@@ -1340,7 +1340,7 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     </func>
 
     <func>
-      <name>load_mib(Mib) -> ok | {error, Reason}</name>
+      <name since="">load_mib(Mib) -> ok | {error, Reason}</name>
       <fsummary>Load a MIB into the manager</fsummary>
       <type>
         <v>Mib = MibName</v>
@@ -1361,7 +1361,7 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     </func>
 
     <func>
-      <name>unload_mib(Mib) -> ok | {error, Reason}</name>
+      <name since="">unload_mib(Mib) -> ok | {error, Reason}</name>
       <fsummary>Unload a MIB from the manager</fsummary>
       <type>
         <v>Mib = MibName</v>
@@ -1382,7 +1382,7 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     </func>
 
     <func>
-      <name>which_mibs() -> Mibs</name>
+      <name since="">which_mibs() -> Mibs</name>
       <fsummary>Which mibs are loaded into the manager</fsummary>
       <type>
         <v>Mibs = [{MibName, MibFile}]</v>
@@ -1397,7 +1397,7 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     </func>
 
     <func>
-      <name>name_to_oid(Name) -> {ok, Oids} | {error, Reason}</name>
+      <name since="">name_to_oid(Name) -> {ok, Oids} | {error, Reason}</name>
       <fsummary>Get all the possible oid's for an alias-name</fsummary>
       <type>
         <v>Name = atom()</v>
@@ -1414,7 +1414,7 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     </func>
 
     <func>
-      <name>oid_to_name(Oid) -> {ok, Name} | {error, Reason}</name>
+      <name since="">oid_to_name(Oid) -> {ok, Name} | {error, Reason}</name>
       <fsummary>Get the alias-name of the oid </fsummary>
       <type>
         <v>Oid = oid()</v>
@@ -1429,7 +1429,7 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     </func>
 
     <func>
-      <name>oid_to_type(Oid) -> {ok, Type} | {error, Reason}</name>
+      <name since="">oid_to_type(Oid) -> {ok, Type} | {error, Reason}</name>
       <fsummary>Get the type of the the oid</fsummary>
       <type>
         <v>Oid = oid()</v>
@@ -1444,7 +1444,7 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     </func>
 
     <func>
-      <name>backup(BackupDir) -> ok | {error, Reason}</name>
+      <name since="">backup(BackupDir) -> ok | {error, Reason}</name>
       <fsummary>Backup manager data</fsummary>
       <type>
         <v>BackupDir = string()</v>
@@ -1458,7 +1458,7 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     </func>
 
     <func>
-      <name>info() -> [{Key, Value}]</name>
+      <name since="">info() -> [{Key, Value}]</name>
       <fsummary>Return information about the manager</fsummary>
       <type>
         <v>Key = atom()</v>
@@ -1475,7 +1475,7 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     </func>
 
     <func>
-      <name>verbosity(Ref, Verbosity) -> void()</name>
+      <name since="">verbosity(Ref, Verbosity) -> void()</name>
       <fsummary>Assign a new verbosity for the process</fsummary>
       <type>
         <v>Ref = server | config | net_if | note_store | all</v>
@@ -1492,8 +1492,8 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     </func>
 
     <func>
-      <name>format_reason(Reason) -> string()</name>
-      <name>format_reason(Prefix, Reason) -> string()</name>
+      <name since="">format_reason(Reason) -> string()</name>
+      <name since="">format_reason(Prefix, Reason) -> string()</name>
       <fsummary>Assign a new verbosity for the process</fsummary>
       <type>
         <v>Reason = term()</v>
diff --git a/lib/snmp/doc/src/snmpm_conf.xml b/lib/snmp/doc/src/snmpm_conf.xml
index a3097e5f7e..17ecf2df7c 100644
--- a/lib/snmp/doc/src/snmpm_conf.xml
+++ b/lib/snmp/doc/src/snmpm_conf.xml
@@ -32,7 +32,7 @@
     <rev></rev>
     <file>snmpm_conf.xml</file>
   </header>
-  <module>snmpm_conf</module>
+  <module since="">snmpm_conf</module>
   <modulesummary>Utility functions for handling the manager config files.</modulesummary>
   <description>
     <p>The module <c>snmpm_conf</c> contains various utility functions to 
@@ -42,7 +42,7 @@
   </description>
   <funcs>
     <func>
-      <name>manager_entry(Tag, Val) -> manager_entry()</name>
+      <name since="">manager_entry(Tag, Val) -> manager_entry()</name>
       <fsummary>Create an manager entry</fsummary>
       <type>
         <v>Tag = address | port | engine_id | max_message_size</v>
@@ -60,8 +60,8 @@
       </desc>
     </func>
     <func>
-      <name>write_manager_config(Dir, Conf) -> ok</name>
-      <name>write_manager_config(Dir, Hdr, Conf) -> ok</name>
+      <name since="">write_manager_config(Dir, Conf) -> ok</name>
+      <name since="">write_manager_config(Dir, Hdr, Conf) -> ok</name>
       <fsummary>Write the manager config to the config file</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -81,7 +81,7 @@
       </desc>
     </func>
     <func>
-      <name>append_manager_config(Dir, Conf) -> ok</name>
+      <name since="">append_manager_config(Dir, Conf) -> ok</name>
       <fsummary>Append the manager config to the config file</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -98,7 +98,7 @@
       </desc>
     </func>
     <func>
-      <name>read_manager_config(Dir) -> Conf</name>
+      <name since="">read_manager_config(Dir) -> Conf</name>
       <fsummary>Read the manager config from the config file</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -115,9 +115,9 @@
       </desc>
     </func>
     <func>
-      <name>users_entry(UserId) -> users_entry()</name>
-      <name>users_entry(UserId, UserMod) -> users_entry()</name>
-      <name>users_entry(UserId, UserMod, UserData) -> users_entry()</name>
+      <name since="">users_entry(UserId) -> users_entry()</name>
+      <name since="">users_entry(UserId, UserMod) -> users_entry()</name>
+      <name since="">users_entry(UserId, UserMod, UserData) -> users_entry()</name>
       <fsummary>Create an users entry</fsummary>
       <type>
         <v>UserId = term()</v>
@@ -139,8 +139,8 @@
       </desc>
     </func>
     <func>
-      <name>write_users_config(Dir, Conf) -> ok</name>
-      <name>write_users_config(Dir, Hdr, Conf) -> ok</name>
+      <name since="">write_users_config(Dir, Conf) -> ok</name>
+      <name since="">write_users_config(Dir, Hdr, Conf) -> ok</name>
       <fsummary>Write the manager users config to the config file</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -161,7 +161,7 @@
       </desc>
     </func>
     <func>
-      <name>append_users_config(Dir, Conf) -> ok</name>
+      <name since="">append_users_config(Dir, Conf) -> ok</name>
       <fsummary>Append the manager users config to the config file</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -179,7 +179,7 @@
       </desc>
     </func>
     <func>
-      <name>read_users_config(Dir) -> Conf</name>
+      <name since="">read_users_config(Dir) -> Conf</name>
       <fsummary>Read the manager users config from the config file</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -196,7 +196,7 @@
       </desc>
     </func>
     <func>
-      <name>agents_entry(UserId, TargetName, Comm, Domain, Addr, EngineID, Timeout, MaxMessageSize, Version, SecModel, SecName, SecLevel) -> agents_entry()</name>
+      <name since="">agents_entry(UserId, TargetName, Comm, Domain, Addr, EngineID, Timeout, MaxMessageSize, Version, SecModel, SecName, SecLevel) -> agents_entry()</name>
       <fsummary>Create an agents entry</fsummary>
       <type>
         <v>UserId = term()</v>
@@ -223,8 +223,8 @@
       </desc>
     </func>
     <func>
-      <name>write_agents_config(Dir, Conf) -> ok</name>
-      <name>write_agents_config(Dir, Hdr, Conf) -> ok</name>
+      <name since="">write_agents_config(Dir, Conf) -> ok</name>
+      <name since="">write_agents_config(Dir, Hdr, Conf) -> ok</name>
       <fsummary>Write the manager agents to the config file</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -245,7 +245,7 @@
       </desc>
     </func>
     <func>
-      <name>append_agents_config(Dir, Conf) -> ok</name>
+      <name since="">append_agents_config(Dir, Conf) -> ok</name>
       <fsummary>Append the manager agents to the config file</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -263,7 +263,7 @@
       </desc>
     </func>
     <func>
-      <name>read_agents_config(Dir) -> Conf</name>
+      <name since="">read_agents_config(Dir) -> Conf</name>
       <fsummary>Read the manager agents config from the config file</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -280,8 +280,8 @@
       </desc>
     </func>
     <func>
-      <name>usm_entry(EngineID, UserName, AuthP, AuthKey, PrivP, PrivKey) -> usm_entry()</name>
-      <name>usm_entry(EngineID, UserName, SecName, AuthP, AuthKey, PrivP, PrivKey) -> usm_entry()</name>
+      <name since="">usm_entry(EngineID, UserName, AuthP, AuthKey, PrivP, PrivKey) -> usm_entry()</name>
+      <name since="">usm_entry(EngineID, UserName, SecName, AuthP, AuthKey, PrivP, PrivKey) -> usm_entry()</name>
       <fsummary>Create an usm entry</fsummary>
       <type>
         <v>EngineID = string()</v>
@@ -303,8 +303,8 @@
       </desc>
     </func>
     <func>
-      <name>write_usm_config(Dir, Conf) -> ok</name>
-      <name>write_usm_config(Dir, Hdr, Conf) -> ok</name>
+      <name since="">write_usm_config(Dir, Conf) -> ok</name>
+      <name since="">write_usm_config(Dir, Hdr, Conf) -> ok</name>
       <fsummary>Write the manager usm config to the config file</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -325,7 +325,7 @@
       </desc>
     </func>
     <func>
-      <name>append_usm_config(Dir, Conf) -> ok</name>
+      <name since="">append_usm_config(Dir, Conf) -> ok</name>
       <fsummary>Append the manager usm  config to the config file</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -343,7 +343,7 @@
       </desc>
     </func>
     <func>
-      <name>read_usm_config(Dir) -> Conf</name>
+      <name since="">read_usm_config(Dir) -> Conf</name>
       <fsummary>Read the manager usm config from the config file</fsummary>
       <type>
         <v>Dir = string()</v>
diff --git a/lib/snmp/doc/src/snmpm_mpd.xml b/lib/snmp/doc/src/snmpm_mpd.xml
index 08276e4b30..b024f8d294 100644
--- a/lib/snmp/doc/src/snmpm_mpd.xml
+++ b/lib/snmp/doc/src/snmpm_mpd.xml
@@ -32,7 +32,7 @@
     <rev></rev>
     <file>snmpm_mpd.xml</file>
   </header>
-  <module>snmpm_mpd</module>
+  <module since="">snmpm_mpd</module>
   <modulesummary>Message Processing and Dispatch module for the SNMP manager</modulesummary>
   <description>
     <p>The module <c>snmpm_mpd</c> implements the version independent
@@ -48,7 +48,7 @@
 
   <funcs>
     <func>
-      <name>init_mpd(Vsns) -> mpd_state()</name>
+      <name since="">init_mpd(Vsns) -> mpd_state()</name>
       <fsummary>Initialize the MPD module</fsummary>
       <type>
         <v>Vsns = [Vsn]</v>
@@ -64,7 +64,7 @@
       </desc>
     </func>
     <func>
-      <name>process_msg(Msg, Domain, Addr, State, NoteStore, Logger) -> {ok, Vsn, Pdu, PduMS, MsgData} | {discarded, Reason}</name>
+      <name since="OTP 17.3">process_msg(Msg, Domain, Addr, State, NoteStore, Logger) -> {ok, Vsn, Pdu, PduMS, MsgData} | {discarded, Reason}</name>
       <fsummary>Process a message received from the network</fsummary>
       <type>
         <v>Msg = binary()</v>
@@ -92,7 +92,7 @@
       </desc>
     </func>
     <func>
-      <name>generate_msg(Vsn, NoteStore, Pdu, MsgData, Logger) -> {ok, Packet} | {discarded, Reason}</name>
+      <name since="">generate_msg(Vsn, NoteStore, Pdu, MsgData, Logger) -> {ok, Packet} | {discarded, Reason}</name>
       <fsummary>Generate a request message to be sent to the network</fsummary>
       <type>
         <v>Vsn = 'version-1' | 'version-2' | 'version-3'</v>
@@ -117,7 +117,7 @@
       </desc>
     </func>
     <func>
-      <name>generate_response_msg(Vsn, Pdu, MsgData, Logger) -> {ok, Packet} | {discarded, Reason}</name>
+      <name since="">generate_response_msg(Vsn, Pdu, MsgData, Logger) -> {ok, Packet} | {discarded, Reason}</name>
       <fsummary>Generate a response packet to be sent to the network</fsummary>
       <type>
         <v>Vsn = 'version-1' | 'version-2' | 'version-3'</v>
diff --git a/lib/snmp/doc/src/snmpm_network_interface.xml b/lib/snmp/doc/src/snmpm_network_interface.xml
index 73892aa2e8..e4a66ceef2 100644
--- a/lib/snmp/doc/src/snmpm_network_interface.xml
+++ b/lib/snmp/doc/src/snmpm_network_interface.xml
@@ -32,7 +32,7 @@
     <rev></rev>
     <file>snmpm_network_interface.xml</file>
   </header>
-  <module>snmpm_network_interface</module>
+  <module since="">snmpm_network_interface</module>
   <modulesummary>Behaviour module for the SNMP manager network interface.</modulesummary>
   <description>
     <p>This module defines the behaviour of the manager network
@@ -79,7 +79,7 @@
 
   <funcs>
     <func>
-      <name>start_link(Server, NoteStore) -> {ok, Pid} | {error, Reason}</name>
+      <name since="">start_link(Server, NoteStore) -> {ok, Pid} | {error, Reason}</name>
       <fsummary>Start-link the network interface process</fsummary>
       <type>
         <v>Server    = pid()</v>
@@ -95,7 +95,7 @@
     </func>
 
     <func>
-      <name>stop(Pid) -> void()</name>
+      <name since="">stop(Pid) -> void()</name>
       <fsummary>Stop the network interface process</fsummary>
       <type>
         <v>Pid = pid()</v>
@@ -108,7 +108,7 @@
     </func>
 
     <func>
-      <name>send_pdu(Pid, Pdu, Vsn, MsgData, Domain, Addr, ExtraInfo) -> void()</name>
+      <name since="">send_pdu(Pid, Pdu, Vsn, MsgData, Domain, Addr, ExtraInfo) -> void()</name>
       <fsummary>Request the network interface process to send this pdu</fsummary>
       <type>
         <v>Pid = pid()</v>
@@ -142,7 +142,7 @@
     </func>
 
     <func>
-      <name>inform_response(Pid, Ref, Addr, Port) -> void()</name>
+      <name since="">inform_response(Pid, Ref, Addr, Port) -> void()</name>
       <fsummary>Send the inform-request ack</fsummary>
       <type>
         <v>Pid = pid()</v>
@@ -163,7 +163,7 @@
     </func>
 
     <func>
-      <name>note_store(Pid, NoteStore) -> void()</name>
+      <name since="">note_store(Pid, NoteStore) -> void()</name>
       <fsummary>Change the verbosity of the network interface process</fsummary>
       <type>
         <v>Pid       = pid()</v>
@@ -179,7 +179,7 @@
     </func>
 
     <func>
-      <name>info(Pid) -> [{Key, Value}]</name>
+      <name since="">info(Pid) -> [{Key, Value}]</name>
       <fsummary>Return information about the running network interface process</fsummary>
       <type>
         <v>Pid = pid()</v>
@@ -198,7 +198,7 @@
     </func>
 
     <func>
-      <name>verbosity(Pid, Verbosity) -> void()</name>
+      <name since="">verbosity(Pid, Verbosity) -> void()</name>
       <fsummary>Change the verbosity of the network interface process</fsummary>
       <type>
         <v>Pid       = pid()</v>
@@ -212,7 +212,7 @@
     </func>
 
     <func>
-      <name>get_log_type(Pid) -> {ok, LogType} | {error, Reason}</name>
+      <name since="">get_log_type(Pid) -> {ok, LogType} | {error, Reason}</name>
       <fsummary>Get the Audit Trail Log type</fsummary>
       <type>
         <v>Pid     = pid()</v>
@@ -233,7 +233,7 @@
     </func>
 
     <func>
-      <name>set_log_type(Pid, NewType) -> {ok, OldType} | {error, Reason}</name>
+      <name since="">set_log_type(Pid, NewType) -> {ok, OldType} | {error, Reason}</name>
       <fsummary>Change the Audit Trail Log type</fsummary>
       <type>
         <v>Pid     = pid()</v>
diff --git a/lib/snmp/doc/src/snmpm_network_interface_filter.xml b/lib/snmp/doc/src/snmpm_network_interface_filter.xml
index 742cd53fc6..a50572da51 100644
--- a/lib/snmp/doc/src/snmpm_network_interface_filter.xml
+++ b/lib/snmp/doc/src/snmpm_network_interface_filter.xml
@@ -32,7 +32,7 @@
     <rev></rev>
     <file>snmpm_network_interface_filter.xml</file>
   </header>
-  <module>snmpm_network_interface_filter</module>
+  <module since="">snmpm_network_interface_filter</module>
   <modulesummary>Behaviour module for the SNMP manager network-interface filter.</modulesummary>
   <description>
     <p>This module defines the behaviour of the manager network interface
@@ -100,7 +100,7 @@ pdu_type() = 'get-request' | 'get-next-request' | 'get-response' |
 
   <funcs>
     <func>
-      <name>accept_recv(Domain, Addr) -> boolean()</name>
+      <name since="">accept_recv(Domain, Addr) -> boolean()</name>
       <fsummary>Shall the received message be accepted</fsummary>
       <type>
 	<v>Domain = transportDomain()</v>
@@ -116,7 +116,7 @@ pdu_type() = 'get-request' | 'get-next-request' | 'get-response' |
     </func>
 
     <func>
-      <name>accept_send(Domain, Addr) -> boolean()</name>
+      <name since="">accept_send(Domain, Addr) -> boolean()</name>
       <fsummary>Shall the message be sent</fsummary>
       <type>
 	<v>Domain = transportDomain()</v>
@@ -132,7 +132,7 @@ pdu_type() = 'get-request' | 'get-next-request' | 'get-response' |
     </func>
 
     <func>
-      <name>accept_recv_pdu(Domain, Addr, PduType) -> boolean()</name>
+      <name since="">accept_recv_pdu(Domain, Addr, PduType) -> boolean()</name>
       <fsummary>Shall the received pdu be accepted</fsummary>
       <type>
 	<v>Domain = transportDomain()</v>
@@ -150,7 +150,7 @@ pdu_type() = 'get-request' | 'get-next-request' | 'get-response' |
     </func>
 
     <func>
-      <name>accept_send_pdu(Domain, Addr, PduType) -> boolean()</name>
+      <name since="">accept_send_pdu(Domain, Addr, PduType) -> boolean()</name>
       <fsummary>Shall the pdu be sent</fsummary>
       <type>
 	<v>Domain = transportDomain()</v>
diff --git a/lib/snmp/doc/src/snmpm_user.xml b/lib/snmp/doc/src/snmpm_user.xml
index 87ae1d224a..9abf596c83 100644
--- a/lib/snmp/doc/src/snmpm_user.xml
+++ b/lib/snmp/doc/src/snmpm_user.xml
@@ -32,7 +32,7 @@
     <rev></rev>
     <file>snmpm_user.xml</file>
   </header>
-  <module>snmpm_user</module>
+  <module since="">snmpm_user</module>
   <modulesummary>Behaviour module for the SNMP manager user.</modulesummary>
   <description>
     <p>This module defines the behaviour of the manager user. 
@@ -93,7 +93,7 @@ snmp_v1_trap_info() :: {Enteprise :: snmp:oid(),
 
   <funcs>
     <func>
-      <name>handle_error(ReqId, Reason, UserData) -> void()</name>
+      <name since="">handle_error(ReqId, Reason, UserData) -> void()</name>
       <fsummary>Handle error</fsummary>
       <type>
         <v>ReqId = integer()</v>
@@ -122,7 +122,7 @@ snmp_v1_trap_info() :: {Enteprise :: snmp:oid(),
     </func>
 
     <func>
-      <name>handle_agent(Domain, Addr, Type, SnmpInfo, UserData) -> Reply</name>
+      <name since="">handle_agent(Domain, Addr, Type, SnmpInfo, UserData) -> Reply</name>
       <fsummary>Handle agent</fsummary>
       <type>
         <v>Domain = transportDomainUdpIpv4 | transportDomainUdpIpv6</v>
@@ -181,7 +181,7 @@ snmp_v1_trap_info() :: {Enteprise :: snmp:oid(),
     </func>
 
     <func>
-      <name>handle_pdu(TargetName, ReqId, SnmpPduInfo, UserData) -> void()</name>
+      <name since="">handle_pdu(TargetName, ReqId, SnmpPduInfo, UserData) -> void()</name>
       <fsummary>Handle the reply to an asynchronous request</fsummary>
       <type>
         <v>TargetName = target_name()</v>
@@ -202,7 +202,7 @@ snmp_v1_trap_info() :: {Enteprise :: snmp:oid(),
     </func>
 
     <func>
-      <name>handle_trap(TargetName, SnmpTrapInfo, UserData) -> Reply</name>
+      <name since="">handle_trap(TargetName, SnmpTrapInfo, UserData) -> Reply</name>
       <fsummary>Handle a trap/notification message</fsummary>
       <type>
         <v>TargetName = TargetName2 = target_name()</v>
@@ -225,7 +225,7 @@ snmp_v1_trap_info() :: {Enteprise :: snmp:oid(),
     </func>
 
     <func>
-      <name>handle_inform(TargetName, SnmpInformInfo, UserData) -> Reply</name>
+      <name since="">handle_inform(TargetName, SnmpInformInfo, UserData) -> Reply</name>
       <fsummary>Handle a inform message</fsummary>
       <type>
         <v>TargetName = TargetName2 = target_name()</v>
@@ -253,7 +253,7 @@ snmp_v1_trap_info() :: {Enteprise :: snmp:oid(),
     </func>
 
     <func>
-      <name>handle_report(TargetName, SnmpReportInfo, UserData) -> Reply</name>
+      <name since="">handle_report(TargetName, SnmpReportInfo, UserData) -> Reply</name>
       <fsummary>Handle a report message</fsummary>
       <type>
         <v>TargetName = TargetName2 = target_name()</v>
@@ -278,7 +278,7 @@ snmp_v1_trap_info() :: {Enteprise :: snmp:oid(),
     </func>
 
     <func>
-      <name>handle_invalid_result(IN, OUT) -> void()</name>
+      <name since="OTP R16B03">handle_invalid_result(IN, OUT) -> void()</name>
       <fsummary>Handle a report message</fsummary>
       <type>
         <v>IN = {Func, Args}</v>
diff --git a/lib/snmp/mibs/Makefile.in b/lib/snmp/mibs/Makefile.in
index 2350194077..77893cbdc8 100644
--- a/lib/snmp/mibs/Makefile.in
+++ b/lib/snmp/mibs/Makefile.in
@@ -41,14 +41,7 @@ RELSYSDIR = $(RELEASE_PATH)/lib/snmp-$(VSN)
 # Common macros
 # ----------------------------------------------------
 
-# NOTE: 
-#    The OTP-REG mib actually belongs to another
-#    application (otp_mibs), and is exported by this
-#    app. But since that app is built later, we have 
-#    to built it here in order to be able to build 
-#    OTP-SNMPEA-MIB (that needs otpModules and
-#    otpApplications).
-MIBS_A = \
+MIBS = \
 	RFC1213-MIB \
 	STANDARD-MIB \
 	SNMPv2-TM \
@@ -62,16 +55,10 @@ MIBS_A = \
 	SNMP-VIEW-BASED-ACM-MIB \
 	SNMP-USM-AES-MIB \
 	INET-ADDRESS-MIB \
-	TRANSPORT-ADDRESS-MIB
-
-MIBS_B = OTP-SNMPEA-MIB
-
-BUILD_MIBS = \
-	$(MIBS_A) \
+	TRANSPORT-ADDRESS-MIB \
 	OTP-REG \
-	$(MIBS_B)
-
-MIBS = $(MIBS_A) $(MIBS_B)
+	OTP-TC \
+	OTP-SNMPEA-MIB
 
 STD_v1_MIB_FILES = \
 	RFC1155-SMI.mib \
@@ -100,8 +87,8 @@ HRL_FILES = $(SNMP_HRL_TARGET_DIR)/SNMPv2-TC.hrl \
 
 TARGET_FILES = \
 	$(ERL_TOP)/lib/snmp/bin/snmp-v2tov1 \
-	$(BUILD_MIBS:%=$(SNMP_BIN_TARGET_DIR)/%.bin) \
-	$(HRL_TARGETS)  \
+	$(MIBS:%=$(SNMP_BIN_TARGET_DIR)/%.bin) \
+	$(HRL_TARGETS) \
 	$(V1_MIB_FILES)
 
 
@@ -136,21 +123,18 @@ endif
 # Targets
 # ----------------------------------------------------
 
-OTP_MIBDIR = $(shell if test -d ../../otp_mibs; then echo otp_mibs; \
-		      else echo sasl; fi)
-
 debug opt: $(TARGET_FILES)
 
 $(ERL_TOP)/lib/snmp/bin/snmp-v2tov1: $(ERL_TOP)/lib/snmp/bin/snmp-v2tov1.src
 	$(gen_verbose)$(PERL) -p -e 's?%PERL%?$(PERL)? ' < $< > $@
 	$(V_at)chmod 755 $@
 
-$(SNMP_BIN_TARGET_DIR)/OTP-REG.bin:	$(ERL_TOP)/lib/$(OTP_MIBDIR)/mibs/OTP-REG.mib
-	$(snmp_verbose)$(ERLC) -pa $(SNMP_TOOLKIT)/ebin -I $(SNMP_TOOLKIT)/priv/mibs $(SNMP_FLAGS) -o $(SNMP_BIN_TARGET_DIR) $<
-
 # To support parallel make, we'll need explicit dependencies
 # to ensure that an imported MIB has been compiled when it's needed.
 
+$(SNMP_BIN_TARGET_DIR)/OTP-TC.bin: \
+	$(SNMP_BIN_TARGET_DIR)/OTP-REG.bin
+
 $(SNMP_BIN_TARGET_DIR)/STANDARD-MIB.bin: \
 	$(SNMP_BIN_TARGET_DIR)/RFC1213-MIB.bin
 
@@ -208,8 +192,6 @@ info:
 	@echo ""
 	@echo "TARGET_FILES = $(TARGET_FILES)"
 	@echo ""
-	@echo "OTP_MIBDIR   = $(OTP_MIBDIR)"
-	@echo ""
 	@echo "SNMP_VSN    = $(SNMP_VSN)"
 	@echo "VSN         = $(VSN)"
 	@echo "RELSYSDIR   = "$(RELSYSDIR)""
diff --git a/lib/otp_mibs/mibs/OTP-REG.mib b/lib/snmp/mibs/OTP-REG.mib
index bf1585061c..bf1585061c 100644
--- a/lib/otp_mibs/mibs/OTP-REG.mib
+++ b/lib/snmp/mibs/OTP-REG.mib
diff --git a/lib/otp_mibs/mibs/OTP-TC.mib b/lib/snmp/mibs/OTP-TC.mib
index efe5451f0c..efe5451f0c 100644
--- a/lib/otp_mibs/mibs/OTP-TC.mib
+++ b/lib/snmp/mibs/OTP-TC.mib
diff --git a/lib/snmp/src/agent/snmpa_set_lib.erl b/lib/snmp/src/agent/snmpa_set_lib.erl
index 57507a36e8..97b8ddf7c4 100644
--- a/lib/snmp/src/agent/snmpa_set_lib.erl
+++ b/lib/snmp/src/agent/snmpa_set_lib.erl
@@ -46,9 +46,9 @@
 %%*  6) IF value is outside the acceptable range THEN wrongValue.
 %%   7) IF variable does not exist and could not ever be created
 %%      THEN noCreation.
-%%   8) IF variable can not be created now THEN inconsistentName.
-%%   9) IF value can not be set now THEN inconsistentValue.
-%%*  9) IF instances of the variable can not be modified THEN notWritable.
+%%   8) IF variable cannot be created now THEN inconsistentName.
+%%   9) IF value cannot be set now THEN inconsistentValue.
+%%*  9) IF instances of the variable cannot be modified THEN notWritable.
 %%  10) IF an unavailable resource is needed THEN resourceUnavailable.
 %%  11) IF any other error THEN genErr.
 %%  12) Otherwise ok!
diff --git a/lib/snmp/src/agent/snmpa_trap.erl b/lib/snmp/src/agent/snmpa_trap.erl
index e75016f7ec..293d1f3ccf 100644
--- a/lib/snmp/src/agent/snmpa_trap.erl
+++ b/lib/snmp/src/agent/snmpa_trap.erl
@@ -830,11 +830,11 @@ do_send_v1_trap(Enter, Spec, V1Res, NVbs, ExtraInfo, NetIf, SysUpTime) ->
 		case lists:keyfind(transportDomainUdpIpv4, 1, Transports) of
 		    false ->
 			?vtrace(
-			   "snmpa_trap: can not send v1 trap "
+			   "snmpa_trap: cannot send v1 trap "
 			   "without IPv4 domain: ~p",
 			   [Transports]),
 			user_err(
-			   "snmpa_trap: can not send v1 trap "
+			   "snmpa_trap: cannot send v1 trap "
 			   "without IPv4 domain: ~p",
 			   [Transports]);
 		    DomainAddr ->
diff --git a/lib/snmp/test/snmp_compiler_test.erl b/lib/snmp/test/snmp_compiler_test.erl
index 0a7b729d1f..2e48d5134d 100644
--- a/lib/snmp/test/snmp_compiler_test.erl
+++ b/lib/snmp/test/snmp_compiler_test.erl
@@ -234,14 +234,14 @@ agent_capabilities(Config) when is_list(Config) ->
     AcMib = join(Dir,"AC-TEST-MIB.mib"),
     ?line {ok, MibFile1} = snmpc:compile(AcMib, [options,
 						 version,
-						 {i,         [SnmpMibsDir, OtpMibsMibsDir]}, 
+						 {i,         [SnmpMibsDir]}, 
 						 {outdir,    Dir}, 
 						 {verbosity, trace}]),
     ?line {ok, Mib1} = snmp_misc:read_mib(MibFile1), 
     ?line {ok, MibFile2} = snmpc:compile(AcMib, [options,
 						 version,
 						 agent_capabilities,
-						 {i,         [SnmpMibsDir, OtpMibsMibsDir]}, 
+						 {i,         [SnmpMibsDir]}, 
 						 {outdir,    Dir}, 
 						 {verbosity, trace}]),
     ?line {ok, Mib2} = snmp_misc:read_mib(MibFile2), 
@@ -290,7 +290,7 @@ module_compliance(Config) when is_list(Config) ->
     ?line {ok, Mib2} = snmp_misc:read_mib(MibFile2), 
     MEDiff = Mib2#mib.mes -- Mib1#mib.mes,
     %% This is a rather pathetic test, but it is somthing...
-    io:format("agent_capabilities -> "
+    io:format("module_compliance -> "
 	      "~n   MEDiff: ~p"
 	      "~n   Mib1:   ~p"
 	      "~n   Mib2:   ~p"
diff --git a/lib/snmp/test/test-mibs/ALARM-MIB.mib b/lib/snmp/test/test-mibs/ALARM-MIB.mib
index 18e43d4b4b..10d2adbff9 100644
--- a/lib/snmp/test/test-mibs/ALARM-MIB.mib
+++ b/lib/snmp/test/test-mibs/ALARM-MIB.mib
@@ -330,7 +330,7 @@ alarmModelRowStatus OBJECT-TYPE
     cannot be used as an alarm suppression mechanism.  Entries
     that are notInService will disappear as described in RFC2579.
 
-    This row can not be modified while it is being
+    This row cannot be modified while it is being
     referenced by a value of alarmActiveModelPointer.  In these
     cases, an error of `inconsistentValue' will be returned to
     the manager.
diff --git a/lib/snmp/test/test-mibs/SNMPv2-TC.mib b/lib/snmp/test/test-mibs/SNMPv2-TC.mib
index fd6a728ab5..1d75c4bbd8 100644
--- a/lib/snmp/test/test-mibs/SNMPv2-TC.mib
+++ b/lib/snmp/test/test-mibs/SNMPv2-TC.mib
@@ -454,7 +454,7 @@ value         |              |      see 1|          ->C|          ->D
                  associated with this column or that there is no
                  conceptual row for which this column would be
                  accessible in the MIB view used by the retrieval.  As
-                 such, the management station can not issue any
+                 such, the management station cannot issue any
                  management protocol set operations to create an
                  instance of this column.
 
@@ -576,7 +576,7 @@ value         |              |      see 1|          ->C|          ->D
                  associated with this column or that there is no
                  conceptual row for which this column would be
                  accessible in the MIB view used by the retrieval.  As
-                 such, the management station can not issue any
+                 such, the management station cannot issue any
                  management protocol set operations to create an
                  instance of this column.
 
diff --git a/lib/snmp/vsn.mk b/lib/snmp/vsn.mk
index 4d5a0fbce8..f305497cd3 100644
--- a/lib/snmp/vsn.mk
+++ b/lib/snmp/vsn.mk
@@ -19,6 +19,6 @@
 # %CopyrightEnd%
 
 APPLICATION = snmp
-SNMP_VSN    = 5.2.12
+SNMP_VSN    = 5.3
 PRE_VSN     =
 APP_VSN     = "$(APPLICATION)-$(SNMP_VSN)$(PRE_VSN)"
diff --git a/lib/ssh/doc/src/notes.xml b/lib/ssh/doc/src/notes.xml
index 177784384e..17f14bdea2 100644
--- a/lib/ssh/doc/src/notes.xml
+++ b/lib/ssh/doc/src/notes.xml
@@ -30,6 +30,38 @@
     <file>notes.xml</file>
   </header>
 
+<section><title>Ssh 4.7.4</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    SSH sftp daemon now accepts an SSH_FXP_STAT message
+	    encoded according to the wrong sftp version. Some clients
+	    sends such messages.</p>
+          <p>
+	    Own Id: OTP-15498 Aux Id: ERL-822, PR-2077 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>Ssh 4.7.3</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Fixed port leakage if a ssh:daemon call failed.</p>
+          <p>
+	    Own Id: OTP-15397 Aux Id: ERL-801 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Ssh 4.7.2</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
@@ -293,6 +325,21 @@
     </section>
 </section>
 
+<section><title>Ssh 4.6.9.3</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Fixed port leakage if a ssh:daemon call failed.</p>
+          <p>
+	    Own Id: OTP-15397 Aux Id: ERL-801 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Ssh 4.6.9.2</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
@@ -2883,7 +2930,7 @@
         </item>
         <item>
           <p>
-	    Fixed internal error on when client and server can not
+	    Fixed internal error on when client and server cannot
 	    agree o which authmethod to use.</p>
           <p>
 	    Own Id: OTP-10731 Aux Id: seq12237 </p>
diff --git a/lib/ssh/doc/src/ssh.xml b/lib/ssh/doc/src/ssh.xml
index 8435fced11..3fd6eae423 100644
--- a/lib/ssh/doc/src/ssh.xml
+++ b/lib/ssh/doc/src/ssh.xml
@@ -28,7 +28,7 @@
     <date>2007-10-06</date>
     <rev></rev>
   </header>
-  <module>ssh</module>
+  <module since="">ssh</module>
   <modulesummary>Main API of the ssh application</modulesummary>
   <description>
     <p>This is the interface module for the <c>SSH</c> application.
@@ -46,7 +46,7 @@
     In that encrypted connection one or more channels could be opened with
     <seealso marker="ssh_connection#session_channel/2">ssh_connection:session_channel/2,4</seealso>.
     </p>
-    <p>Each channel is an isolated "pipe" between a client-side process and a server-side process. Thoose process
+    <p>Each channel is an isolated "pipe" between a client-side process and a server-side process. Those process
     pairs could handle for example file transfers (sftp) or remote command execution (shell, exec and/or cli).
     If a custom shell is implemented, the user of the client could execute the special commands remotely. Note that
     the user is not necessarily a human but probably a system interfacing the SSH app.
@@ -1059,17 +1059,17 @@
 
 <!-- CLOSE/1 -->
    <func>
-     <name name="close" arity="1"/>
+     <name name="close" arity="1" since=""/>
       <fsummary>Closes an SSH connection.</fsummary>
       <desc><p>Closes an SSH connection.</p></desc>
     </func>
     
 <!-- CONNECT/2 etc -->
    <func>
-     <name>connect(Host, Port, Options) -> Result </name>
-     <name>connect(Host, Port, Options, NegotiationTimeout) -> Result </name>
-     <name>connect(TcpSocket, Options) -> Result</name>
-     <name>connect(TcpSocket, Options, NegotiationTimeout) -> Result</name>
+     <name since="">connect(Host, Port, Options) -> Result </name>
+     <name since="">connect(Host, Port, Options, NegotiationTimeout) -> Result </name>
+     <name since="OTP 19.0">connect(TcpSocket, Options) -> Result</name>
+     <name since="">connect(TcpSocket, Options, NegotiationTimeout) -> Result</name>
      <fsummary>Connects to an SSH server.</fsummary>
      <type>
        <v>Host = <seealso marker="#type-host">host()</seealso></v>
@@ -1098,7 +1098,7 @@
 
 <!-- CONNECTION_INFO/1, CONNECTION_INFO/2 -->
    <func>
-     <name name="connection_info" arity="2"/>
+     <name name="connection_info" arity="2" since=""/>
      <fsummary>Retrieves information about a connection.</fsummary>
      <desc>
        <p>Retrieves information about a connection. The list <c>Keys</c> defines which information that
@@ -1108,9 +1108,9 @@
 
 <!-- DEAMON/1,2,3 -->
    <func>
-     <name>daemon(Port | TcpSocket) -> Result</name>
-     <name>daemon(Port | TcpSocket, Options) -> Result</name>
-     <name>daemon(HostAddress, Port, Options) -> Result</name>
+     <name since="">daemon(Port | TcpSocket) -> Result</name>
+     <name since="">daemon(Port | TcpSocket, Options) -> Result</name>
+     <name since="">daemon(HostAddress, Port, Options) -> Result</name>
      <fsummary>Starts a server listening for SSH connections.</fsummary>
      <type>
        <v>Port = integer()</v>
@@ -1154,7 +1154,7 @@
 
 <!-- DAEMON_INFO/1 -->   
    <func>
-     <name name="daemon_info" arity="1"/>
+     <name name="daemon_info" arity="1" since="OTP 19.0"/>
      <fsummary>Get info about a daemon</fsummary>
      <desc>
        <p>Returns a key-value list with information about the daemon.</p>
@@ -1164,7 +1164,7 @@
 
 <!-- DEFAULT_ALGORITHMS/0 -->
     <func>
-      <name name="default_algorithms" arity="0"/>
+      <name name="default_algorithms" arity="0" since="OTP 18.0"/>
       <fsummary>Get a list declaring the supported algorithms</fsummary>
       <desc>
 	<p>Returns a key-value list, where the keys are the different types of algorithms and the values are the
@@ -1176,9 +1176,9 @@
 
 <!-- SHELL/1,2,3 -->
     <func>
-      <name>shell(Host | TcpSocket) -> Result </name>
-      <name>shell(Host | TcpSocket, Options) -> Result </name>
-      <name>shell(Host, Port, Options) -> Result </name>
+      <name since="">shell(Host | TcpSocket) -> Result </name>
+      <name since="">shell(Host | TcpSocket, Options) -> Result </name>
+      <name since="">shell(Host, Port, Options) -> Result </name>
       <fsummary>Starts an interactive shell on a remote SSH server.</fsummary>
       <type>
 	<v>Host = <seealso marker="#type-host">host()</seealso></v>
@@ -1203,8 +1203,8 @@
     </func>
 
     <func>
-      <name name="start" arity="0"/>
-      <name name="start" arity="1"/>
+      <name name="start" arity="0" since=""/>
+      <name name="start" arity="1" since=""/>
       <fsummary>Starts the SSH application.</fsummary>
       <desc>
         <p>Utility function that starts the applications <c>crypto</c>, <c>public_key</c>,
@@ -1215,7 +1215,7 @@
     </func>
 
     <func>
-      <name name="stop" arity="0"/>
+      <name name="stop" arity="0" since=""/>
       <fsummary>Stops the <c>ssh</c> application.</fsummary>
       <desc>
         <p>Stops the <c>ssh</c> application.
@@ -1225,9 +1225,9 @@
     </func>
     
     <func>
-      <name name="stop_daemon" arity="1"/>
-      <name name="stop_daemon" arity="2"/>
-      <name name="stop_daemon" arity="3"/>
+      <name name="stop_daemon" arity="1" since=""/>
+      <name name="stop_daemon" arity="2" since=""/>
+      <name name="stop_daemon" arity="3" since="OTP 21.0"/>
       <fsummary>Stops the listener and all connections started by the listener.</fsummary>
       <desc>
 	<p>Stops the listener and all connections started by the listener.</p>
@@ -1235,9 +1235,9 @@
     </func>
 
     <func>
-      <name name="stop_listener" arity="1"/>
-      <name name="stop_listener" arity="2"/>
-      <name name="stop_listener" arity="3"/>
+      <name name="stop_listener" arity="1" since=""/>
+      <name name="stop_listener" arity="2" since=""/>
+      <name name="stop_listener" arity="3" since="OTP 21.0"/>
       <fsummary>Stops the listener, but leaves existing connections started by the listener operational.</fsummary>
       <desc>
 	<p>Stops the listener, but leaves existing connections started by the listener operational.</p>
diff --git a/lib/ssh/doc/src/ssh_client_channel.xml b/lib/ssh/doc/src/ssh_client_channel.xml
index 9be4007c68..cd28b95fd3 100644
--- a/lib/ssh/doc/src/ssh_client_channel.xml
+++ b/lib/ssh/doc/src/ssh_client_channel.xml
@@ -29,7 +29,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>ssh_client_channel</module>
+  <module since="OTP 21.0">ssh_client_channel</module>
   <modulesummary>-behaviour(ssh_client_channel). (Replaces ssh_channel)
   </modulesummary>
   <description>
@@ -68,8 +68,8 @@
 
   <funcs>
     <func>
-      <name>call(ChannelRef, Msg) -></name>
-      <name>call(ChannelRef, Msg, Timeout) -> Reply | {error, Reason}</name>
+      <name since="OTP 21.0">call(ChannelRef, Msg) -></name>
+      <name since="OTP 21.0">call(ChannelRef, Msg, Timeout) -> Reply | {error, Reason}</name>
       <fsummary>Makes a synchronous call to a channel.</fsummary>
       <type>
 	<v>ChannelRef = pid() </v>
@@ -92,7 +92,7 @@
     </func>
     
     <func>
-      <name>cast(ChannelRef, Msg) -> ok </name>
+      <name since="OTP 21.0">cast(ChannelRef, Msg) -> ok </name>
       <fsummary>Sends an asynchronous message to the channel
 	ChannelRef and returns ok.</fsummary>
       <type>
@@ -111,7 +111,7 @@
     </func>
 
     <func>
-      <name>enter_loop(State) -> _ </name>
+      <name since="OTP 21.0">enter_loop(State) -> _ </name>
       <fsummary>Makes an existing process an ssh_client_channel (replaces ssh_channel) process.</fsummary>
       <type>
 	<v>State = term()</v>
@@ -131,7 +131,7 @@
     </func>
     
     <func>
-      <name>init(Options) -> {ok, State} |  {ok, State, Timeout} | {stop, Reason} </name>
+      <name since="OTP 21.0">init(Options) -> {ok, State} |  {ok, State, Timeout} | {stop, Reason} </name>
       <fsummary>Initiates an <c>ssh_client_channel</c> process.</fsummary>
       <type>
 	<v>Options = [{Option, Value}]</v>
@@ -173,7 +173,7 @@
     </func>
 
     <func>
-      <name>reply(Client, Reply) -> _</name>
+      <name since="OTP 21.0">reply(Client, Reply) -> _</name>
       <fsummary>Sends a reply to a client.</fsummary>
       <type>
         <v>Client = opaque()</v>
@@ -193,8 +193,8 @@
     </func>
 
     <func>
-      <name>start(SshConnection, ChannelId, ChannelCb, CbInitArgs) -> </name>
-      <name>start_link(SshConnection, ChannelId, ChannelCb, CbInitArgs) ->
+      <name since="OTP 21.0">start(SshConnection, ChannelId, ChannelCb, CbInitArgs) -> </name>
+      <name since="OTP 21.0">start_link(SshConnection, ChannelId, ChannelCb, CbInitArgs) ->
       {ok, ChannelRef} | {error, Reason}</name>
       <fsummary>Starts a process that handles an SSH channel.</fsummary>
       <type>
@@ -244,7 +244,7 @@
 
   <funcs>
     <func>
-      <name>Module:code_change(OldVsn, State, Extra) -> {ok,
+      <name since="OTP 21.0">Module:code_change(OldVsn, State, Extra) -> {ok,
       NewState}</name>
       <fsummary>Converts process state when code is changed.</fsummary>
       <type>
@@ -287,7 +287,7 @@
     </func>
     
     <func>
-      <name>Module:init(Args) -> {ok, State} | {ok, State, timeout()} |
+      <name since="OTP 21.0">Module:init(Args) -> {ok, State} | {ok, State, timeout()} |
       {stop, Reason}</name>
       <fsummary>Makes necessary initializations and returns the
       initial channel state if the initializations succeed.</fsummary>
@@ -307,7 +307,7 @@
     </func>
    
     <func>
-      <name>Module:handle_call(Msg, From, State) -> Result</name>
+      <name since="OTP 21.0">Module:handle_call(Msg, From, State) -> Result</name>
       <fsummary>Handles messages sent by calling
       <c>call/[2,3]</c>.</fsummary>
       <type>
@@ -334,7 +334,7 @@
     </func>
 
     <func>
-      <name>Module:handle_cast(Msg, State) -> Result</name>
+      <name since="OTP 21.0">Module:handle_cast(Msg, State) -> Result</name>
       <fsummary>Handles messages sent by calling
       <c>cast/2</c>.</fsummary>
       <type>
@@ -355,7 +355,7 @@
     </func>
  
     <func>
-      <name>Module:handle_msg(Msg, State) -> {ok, State} |
+      <name since="OTP 21.0">Module:handle_msg(Msg, State) -> {ok, State} |
       {stop, ChannelId, State}</name>
 
       <fsummary>Handles other messages than SSH connection protocol,
@@ -389,7 +389,7 @@
     </func>
 
     <func>
-      <name>Module:handle_ssh_msg(Msg, State) -> {ok, State} | {stop,
+      <name since="OTP 21.0">Module:handle_ssh_msg(Msg, State) -> {ok, State} | {stop,
       ChannelId, State}</name>
       <fsummary>Handles <c>ssh</c> connection protocol messages.</fsummary>
       <type>
@@ -416,7 +416,7 @@
     </func>
 
     <func>
-      <name>Module:terminate(Reason, State) -> _</name>
+      <name since="OTP 21.0">Module:terminate(Reason, State) -> _</name>
       <fsummary>Does cleaning up before channel process termination.
       </fsummary>
       <type>
diff --git a/lib/ssh/doc/src/ssh_client_key_api.xml b/lib/ssh/doc/src/ssh_client_key_api.xml
index bc77756147..9f2f3013e5 100644
--- a/lib/ssh/doc/src/ssh_client_key_api.xml
+++ b/lib/ssh/doc/src/ssh_client_key_api.xml
@@ -29,7 +29,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>ssh_client_key_api</module>
+  <module since="OTP R16B">ssh_client_key_api</module>
   <modulesummary>
      -behaviour(ssh_client_key_api).
   </modulesummary>
@@ -86,7 +86,7 @@
 
   <funcs>
     <func>
-      <name>Module:add_host_key(HostNames, PublicHostKey, ConnectOptions) -> ok | {error, Reason}</name>
+      <name since="OTP R16B">Module:add_host_key(HostNames, PublicHostKey, ConnectOptions) -> ok | {error, Reason}</name>
       <fsummary>Adds a host key to the set of trusted host keys.</fsummary>
       <type>
 	<v>HostNames = string()</v>
@@ -103,7 +103,7 @@
     </func>
 
     <func>
-      <name>Module:is_host_key(Key, Host, Algorithm, ConnectOptions) -> Result</name>
+      <name since="OTP R16B">Module:is_host_key(Key, Host, Algorithm, ConnectOptions) -> Result</name>
       <fsummary>Checks if a host key is trusted.</fsummary>
       <type>
 	<v>Key = <seealso marker="public_key:public_key#type-public_key">public_key:public_key()</seealso></v>
@@ -125,7 +125,7 @@
     </func>
 
     <func>
-      <name>Module:user_key(Algorithm, ConnectOptions) ->
+      <name since="OTP R16B">Module:user_key(Algorithm, ConnectOptions) ->
       {ok, PrivateKey}  | {error, Reason}</name>
       <fsummary>Fetches the users <em>public key</em> matching the <c>Algorithm</c>.</fsummary>
       <type>
diff --git a/lib/ssh/doc/src/ssh_connection.xml b/lib/ssh/doc/src/ssh_connection.xml
index 8e1cf156a8..2a701929f6 100644
--- a/lib/ssh/doc/src/ssh_connection.xml
+++ b/lib/ssh/doc/src/ssh_connection.xml
@@ -30,7 +30,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>ssh_connection</module>
+  <module since="">ssh_connection</module>
   <modulesummary>
     This module provides API functions to send SSH Connection Protocol 
     events to the other side of an SSH channel.
@@ -201,7 +201,7 @@
   <funcs>
    
    <func>
-     <name>adjust_window(ConnectionRef, ChannelId, NumOfBytes) -> ok</name>
+     <name since="">adjust_window(ConnectionRef, ChannelId, NumOfBytes) -> ok</name>
      <fsummary>Adjusts the SSH flow control window.</fsummary>
      <type>
        <v>ConnectionRef = connection_ref()</v>
@@ -221,7 +221,7 @@
    </func>
    
    <func>
-     <name>close(ConnectionRef, ChannelId) -> ok</name>
+     <name since="">close(ConnectionRef, ChannelId) -> ok</name>
      <fsummary>Sends a close message on the channel <c>ChannelId</c>.</fsummary>
      <type>
        <v>ConnectionRef = connection_ref()</v>
@@ -240,7 +240,7 @@
    </func>
    
    <func>
-     <name>exec(ConnectionRef, ChannelId, Command, TimeOut) -> ssh_request_status() |
+     <name since="">exec(ConnectionRef, ChannelId, Command, TimeOut) -> ssh_request_status() |
      {error, reason()}</name>
      <fsummary>Requests that the server starts the execution of the given command.</fsummary>
      <type>
@@ -284,7 +284,7 @@
    </func>
 
    <func>
-     <name>exit_status(ConnectionRef, ChannelId, Status) -> ok</name>
+     <name since="">exit_status(ConnectionRef, ChannelId, Status) -> ok</name>
      <fsummary>Sends the exit status of a command to the client.</fsummary>
      <type>
        <v>ConnectionRef = connection_ref() </v>
@@ -298,8 +298,8 @@
    </func>
    
    <func>
-     <name>ptty_alloc(ConnectionRef, ChannelId, Options) -></name>
-     <name>ptty_alloc(ConnectionRef, ChannelId, Options, Timeout) ->  > ssh_request_status() |
+     <name since="OTP 17.5">ptty_alloc(ConnectionRef, ChannelId, Options) -></name>
+     <name since="OTP 17.4">ptty_alloc(ConnectionRef, ChannelId, Options, Timeout) ->  > ssh_request_status() |
      {error, reason()}</name>
        <fsummary>Sends an SSH Connection Protocol <c>pty_req</c>,
        to allocate a pseudo-terminal.</fsummary>
@@ -339,7 +339,7 @@
      </func>
 
      <func>
-       <name>reply_request(ConnectionRef, WantReply, Status, ChannelId) -> ok</name>
+       <name since="">reply_request(ConnectionRef, WantReply, Status, ChannelId) -> ok</name>
        <fsummary>Sends status replies to requests that want such replies.</fsummary>
       <type>
 	<v>ConnectionRef = connection_ref()</v>
@@ -357,10 +357,10 @@
      </func>
     
      <func>
-       <name>send(ConnectionRef, ChannelId, Data) -></name>
-       <name>send(ConnectionRef, ChannelId, Data, Timeout) -></name>
-       <name>send(ConnectionRef, ChannelId, Type, Data) -></name>
-       <name>send(ConnectionRef, ChannelId, Type, Data, TimeOut) ->
+       <name since="">send(ConnectionRef, ChannelId, Data) -></name>
+       <name since="">send(ConnectionRef, ChannelId, Data, Timeout) -></name>
+       <name since="">send(ConnectionRef, ChannelId, Type, Data) -></name>
+       <name since="">send(ConnectionRef, ChannelId, Type, Data, TimeOut) ->
        ok | {error, timeout} | {error, closed}</name>
        <fsummary>Sends channel data.</fsummary>
        <type>
@@ -380,7 +380,7 @@
      </func>
      
      <func>
-       <name>send_eof(ConnectionRef, ChannelId) -> ok | {error, closed}</name>
+       <name since="">send_eof(ConnectionRef, ChannelId) -> ok | {error, closed}</name>
        <fsummary>Sends EOF on channel <c>ChannelId</c>.</fsummary>
        <type>
 	<v>ConnectionRef = connection_ref()</v>
@@ -392,8 +392,8 @@
      </func>
 
      <func>
-       <name>session_channel(ConnectionRef, Timeout) -></name>
-       <name>session_channel(ConnectionRef, InitialWindowSize,
+       <name since="">session_channel(ConnectionRef, Timeout) -></name>
+       <name since="">session_channel(ConnectionRef, InitialWindowSize,
        MaxPacketSize, Timeout) -> {ok, channel_id()} | {error, reason()}</name>
        <fsummary>Opens a channel for an SSH session.</fsummary>
        <type>
@@ -410,7 +410,7 @@
      </func>
 
     <func>
-      <name>setenv(ConnectionRef, ChannelId, Var, Value, TimeOut) -> ssh_request_status() |
+      <name since="">setenv(ConnectionRef, ChannelId, Var, Value, TimeOut) -> ssh_request_status() |
       {error, reason()}</name>
       <fsummary>Environment variables can be passed to the
       shell/command to be started later.</fsummary>
@@ -428,7 +428,7 @@
     </func>
     
     <func>
-      <name>shell(ConnectionRef, ChannelId) -> ok | failure | {error, closed}
+      <name since="">shell(ConnectionRef, ChannelId) -> ok | failure | {error, closed}
       </name>
       <fsummary>Requests that the user default shell (typically defined in
       /etc/passwd in Unix systems) is to be executed at the server end.</fsummary>
@@ -448,7 +448,7 @@
     </func>
 
     <func>
-      <name>subsystem(ConnectionRef, ChannelId, Subsystem, Timeout) -> ssh_request_status() |
+      <name since="">subsystem(ConnectionRef, ChannelId, Subsystem, Timeout) -> ssh_request_status() |
       {error, reason()}</name>
       <fsummary>Requests to execute a predefined subsystem on the server.</fsummary>
        <type>
diff --git a/lib/ssh/doc/src/ssh_file.xml b/lib/ssh/doc/src/ssh_file.xml
index 6681d9c306..f1fef09083 100644
--- a/lib/ssh/doc/src/ssh_file.xml
+++ b/lib/ssh/doc/src/ssh_file.xml
@@ -28,7 +28,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>ssh_file</module>
+  <module since="OTP 21.2">ssh_file</module>
   <modulesummary>Default callback module for the client's and server's database operations in the ssh application</modulesummary>
   <description>
     <p>This module is the default callback handler for the client's and the server's user and host "database" operations.
@@ -169,7 +169,7 @@
 
   <funcs>
     <func>
-      <name>host_key(Algorithm, DaemonOptions) -> {ok, Key} | {error, Reason}</name>
+      <name since="OTP 21.2">host_key(Algorithm, DaemonOptions) -> {ok, Key} | {error, Reason}</name>
       <fsummary></fsummary>
       <desc>
 	<p><strong>Types and description</strong></p>
@@ -195,7 +195,7 @@
     </func>
 
     <func>
-      <name>is_auth_key(PublicUserKey, User, DaemonOptions) -> Result</name>
+      <name since="OTP 21.2">is_auth_key(PublicUserKey, User, DaemonOptions) -> Result</name>
       <fsummary></fsummary>
       <desc>
 	<p><strong>Types and description</strong></p>
@@ -216,7 +216,7 @@
     </func>
 
     <func>
-      <name>add_host_key(HostNames, PublicHostKey, ConnectOptions) -> ok | {error, Reason}</name>
+      <name since="OTP 21.2">add_host_key(HostNames, PublicHostKey, ConnectOptions) -> ok | {error, Reason}</name>
       <fsummary></fsummary>
       <desc>
 	<p><strong>Types and description</strong></p>
@@ -235,7 +235,7 @@
     </func>
 
     <func>
-      <name>is_host_key(Key, Host, Algorithm, ConnectOptions) -> Result</name>
+      <name since="OTP 21.2">is_host_key(Key, Host, Algorithm, ConnectOptions) -> Result</name>
       <fsummary></fsummary>
       <desc>
 	<p><strong>Types and description</strong></p>
@@ -254,7 +254,7 @@
     </func>
 
     <func>
-      <name>user_key(Algorithm, ConnectOptions) -> {ok, PrivateKey} | {error, Reason}</name>
+      <name since="OTP 21.2">user_key(Algorithm, ConnectOptions) -> {ok, PrivateKey} | {error, Reason}</name>
       <fsummary></fsummary>
       <desc>
 	<p><strong>Types and description</strong></p>
diff --git a/lib/ssh/doc/src/ssh_server_channel.xml b/lib/ssh/doc/src/ssh_server_channel.xml
index 31ba9a3231..a4e18bbfbf 100644
--- a/lib/ssh/doc/src/ssh_server_channel.xml
+++ b/lib/ssh/doc/src/ssh_server_channel.xml
@@ -29,7 +29,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>ssh_server_channel</module>
+  <module since="OTP 21.0">ssh_server_channel</module>
   <modulesummary>-behaviour(ssh_server_channel). (Replaces ssh_daemon_channel)
   </modulesummary>
   <description>
@@ -70,7 +70,7 @@
 
   <funcs>
     <func>
-      <name>Module:init(Args) -> {ok, State} | {ok, State, timeout()} |
+      <name since="OTP 21.0">Module:init(Args) -> {ok, State} | {ok, State, timeout()} |
       {stop, Reason}</name>
       <fsummary>Makes necessary initializations and returns the
       initial channel state if the initializations succeed.</fsummary>
@@ -93,7 +93,7 @@
     </func>
    
     <func>
-      <name>Module:handle_msg(Msg, State) -> {ok, State} |
+      <name since="OTP 21.0">Module:handle_msg(Msg, State) -> {ok, State} |
       {stop, ChannelId, State}</name>
 
       <fsummary>Handles other messages than SSH connection protocol,
@@ -125,7 +125,7 @@
     </func>
 
     <func>
-      <name>Module:handle_ssh_msg(Msg, State) -> {ok, State} | {stop,
+      <name since="OTP 21.0">Module:handle_ssh_msg(Msg, State) -> {ok, State} | {stop,
       ChannelId, State}</name>
       <fsummary>Handles <c>ssh</c> connection protocol messages.</fsummary>
       <type>
@@ -152,7 +152,7 @@
     </func>
 
     <func>
-      <name>Module:terminate(Reason, State) -> _</name>
+      <name since="OTP 21.0">Module:terminate(Reason, State) -> _</name>
       <fsummary>Does cleaning up before channel process termination.
       </fsummary>
       <type>
diff --git a/lib/ssh/doc/src/ssh_server_key_api.xml b/lib/ssh/doc/src/ssh_server_key_api.xml
index e2a31bd5f5..013a788a4a 100644
--- a/lib/ssh/doc/src/ssh_server_key_api.xml
+++ b/lib/ssh/doc/src/ssh_server_key_api.xml
@@ -29,7 +29,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>ssh_server_key_api</module>
+  <module since="OTP R16B">ssh_server_key_api</module>
   <modulesummary>
     -behaviour(ssh_server_key_api).
   </modulesummary>
@@ -87,7 +87,7 @@
 
   <funcs>
     <func>
-      <name>Module:host_key(Algorithm, DaemonOptions) ->
+      <name since="OTP R16B">Module:host_key(Algorithm, DaemonOptions) ->
       {ok, Key} | {error, Reason}</name>
       <fsummary>Fetches the host’s private key.</fsummary>
       <type>
@@ -111,7 +111,7 @@
     </func>
 
     <func>
-      <name>Module:is_auth_key(PublicUserKey, User, DaemonOptions) -> Result</name>
+      <name since="OTP R16B">Module:is_auth_key(PublicUserKey, User, DaemonOptions) -> Result</name>
       <fsummary>Checks if the user key is authorized.</fsummary>
       <type>
 	<v>PublicUserKey = <seealso marker="public_key:public_key#type-public_key">public_key:public_key()</seealso></v>
diff --git a/lib/ssh/doc/src/ssh_sftp.xml b/lib/ssh/doc/src/ssh_sftp.xml
index 8c105147d6..c89092798d 100644
--- a/lib/ssh/doc/src/ssh_sftp.xml
+++ b/lib/ssh/doc/src/ssh_sftp.xml
@@ -29,7 +29,7 @@
     <rev></rev>
     <file>ssh_sftp.sgml</file>
   </header>
-  <module>ssh_sftp</module>
+  <module since="">ssh_sftp</module>
   <modulesummary>SFTP client.</modulesummary>
   <description>
     <p>This module implements an SSH FTP (SFTP) client. SFTP is a
@@ -82,7 +82,7 @@
 
   <funcs>
      <func>
-       <name>apread(ChannelPid, Handle, Position, Len) -> {async, N} | {error, reason()}</name>
+       <name since="">apread(ChannelPid, Handle, Position, Len) -> {async, N} | {error, reason()}</name>
        <fsummary>Reads asynchronously from an open file.</fsummary>
        <type>
 	 <v>ChannelPid = pid()</v>
@@ -98,7 +98,7 @@
      </func>
      
      <func>
-	<name>apwrite(ChannelPid, Handle, Position, Data) -> {async, N} | {error, reason()}</name>
+	<name since="">apwrite(ChannelPid, Handle, Position, Data) -> {async, N} | {error, reason()}</name>
 	<fsummary>Writes asynchronously to an open file.</fsummary>
 	<type>
 	  <v>ChannelPid = pid()</v>
@@ -116,7 +116,7 @@
       </func>
       
       <func>
-	<name>aread(ChannelPid, Handle, Len) -> {async, N} | {error, reason()}</name>
+	<name since="">aread(ChannelPid, Handle, Len) -> {async, N} | {error, reason()}</name>
 	<fsummary>Reads asynchronously from an open file.</fsummary>
 	<type>
 	  <v>ChannelPid = pid()</v>
@@ -137,7 +137,7 @@
     </func>
 
     <func>
-      <name>awrite(ChannelPid, Handle, Data) -> {async, N} | {error, reason()}</name>
+      <name since="">awrite(ChannelPid, Handle, Data) -> {async, N} | {error, reason()}</name>
       <fsummary>Writes asynchronously to an open file.</fsummary>
       <type>
         <v>ChannelPid = pid()</v>
@@ -159,8 +159,8 @@
     </func>
 
     <func>
-      <name>close(ChannelPid, Handle) -></name>
-      <name>close(ChannelPid, Handle, Timeout) -> ok | {error, reason()}</name>
+      <name since="">close(ChannelPid, Handle) -></name>
+      <name since="">close(ChannelPid, Handle, Timeout) -> ok | {error, reason()}</name>
       <fsummary>Closes an open handle.</fsummary>
       <type>
         <v>ChannelPid = pid()</v>
@@ -173,8 +173,8 @@
     </func>
 
     <func>
-      <name>delete(ChannelPid, Name) -></name>
-      <name>delete(ChannelPid, Name, Timeout) -> ok | {error, reason()}</name>
+      <name since="">delete(ChannelPid, Name) -></name>
+      <name since="">delete(ChannelPid, Name, Timeout) -> ok | {error, reason()}</name>
       <fsummary>Deletes a file.</fsummary>
       <type>
         <v>ChannelPid = pid()</v>
@@ -188,8 +188,8 @@
     </func>
 
     <func>
-      <name>del_dir(ChannelPid, Name) -></name>
-      <name>del_dir(ChannelPid, Name, Timeout) -> ok | {error, reason()}</name>
+      <name since="">del_dir(ChannelPid, Name) -></name>
+      <name since="">del_dir(ChannelPid, Name, Timeout) -> ok | {error, reason()}</name>
       <fsummary>Deletes an empty directory.</fsummary>
       <type>
         <v>ChannelPid = pid()</v>
@@ -204,8 +204,8 @@
     </func>
 
      <func>
-      <name>list_dir(ChannelPid, Path) -></name>
-      <name>list_dir(ChannelPid, Path, Timeout) -> {ok, Filenames} | {error, reason()}</name>
+      <name since="">list_dir(ChannelPid, Path) -></name>
+      <name since="">list_dir(ChannelPid, Path, Timeout) -> {ok, Filenames} | {error, reason()}</name>
       <fsummary>Lists the directory.</fsummary>
       <type>
         <v>ChannelPid = pid()</v>
@@ -221,8 +221,8 @@
     </func>
 
     <func>
-      <name>make_dir(ChannelPid, Name) -></name>
-      <name>make_dir(ChannelPid, Name, Timeout) -> ok | {error, reason()}</name>
+      <name since="">make_dir(ChannelPid, Name) -></name>
+      <name since="">make_dir(ChannelPid, Name, Timeout) -> ok | {error, reason()}</name>
       <fsummary>Creates a directory.</fsummary>
       <type>
         <v>ChannelPid = pid()</v>
@@ -237,8 +237,8 @@
     </func>
 
     <func>
-      <name>make_symlink(ChannelPid, Name, Target) -></name>
-      <name>make_symlink(ChannelPid, Name, Target, Timeout) -> ok | {error, reason()}</name>
+      <name since="">make_symlink(ChannelPid, Name, Target) -></name>
+      <name since="">make_symlink(ChannelPid, Name, Target, Timeout) -> ok | {error, reason()}</name>
       <fsummary>Creates a symbolic link.</fsummary>
       <type>
         <v>ChannelPid = pid()</v>
@@ -253,8 +253,8 @@
     </func>
 
        <func>
-      <name>open(ChannelPid, File, Mode) -></name>
-      <name>open(ChannelPid, File, Mode, Timeout) -> {ok, Handle} | {error, reason()}</name>
+      <name since="">open(ChannelPid, File, Mode) -></name>
+      <name since="">open(ChannelPid, File, Mode, Timeout) -> {ok, Handle} | {error, reason()}</name>
       <fsummary>Opens a file and returns a handle.</fsummary>
       <type>
         <v>ChannelPid = pid()</v>
@@ -270,8 +270,8 @@
       </desc>
     </func>
     <func>
-      <name>opendir(ChannelPid, Path) -></name>
-      <name>opendir(ChannelPid, Path, Timeout) -> {ok, Handle} | {error, reason()}</name>
+      <name since="">opendir(ChannelPid, Path) -></name>
+      <name since="">opendir(ChannelPid, Path, Timeout) -> {ok, Handle} | {error, reason()}</name>
       <fsummary>Opens a directory and returns a handle.</fsummary>
       <type>
         <v>ChannelPid = pid()</v>
@@ -285,8 +285,8 @@
     </func>
 
     <func>
-      <name>open_tar(ChannelPid, Path, Mode) -></name>
-      <name>open_tar(ChannelPid, Path, Mode, Timeout) -> {ok, Handle} | {error, reason()}</name>
+      <name since="OTP 17.4">open_tar(ChannelPid, Path, Mode) -></name>
+      <name since="OTP 17.4">open_tar(ChannelPid, Path, Mode, Timeout) -> {ok, Handle} | {error, reason()}</name>
       <fsummary>Opens a tar file on the server to which <c>ChannelPid</c>
       is connected and returns a handle.</fsummary>
       <type>
@@ -339,8 +339,8 @@
     </func>
 
     <func>
-      <name>position(ChannelPid, Handle, Location) -></name>
-      <name>position(ChannelPid, Handle, Location, Timeout) -> {ok, NewPosition | {error, reason()}</name>
+      <name since="">position(ChannelPid, Handle, Location) -></name>
+      <name since="">position(ChannelPid, Handle, Location, Timeout) -> {ok, NewPosition | {error, reason()}</name>
       <fsummary>Sets the file position of a file.</fsummary>
       <type>
         <v>ChannelPid = pid()</v>
@@ -384,8 +384,8 @@
     </func>
 
     <func>
-      <name>pread(ChannelPid, Handle, Position, Len) -></name>
-      <name>pread(ChannelPid, Handle, Position, Len, Timeout) -> {ok, Data} | eof | {error, reason()}</name>
+      <name since="">pread(ChannelPid, Handle, Position, Len) -></name>
+      <name since="">pread(ChannelPid, Handle, Position, Len, Timeout) -> {ok, Data} | eof | {error, reason()}</name>
       <fsummary>Reads from an open file.</fsummary>
       <type>
         <v>ChannelPid = pid()</v>
@@ -402,8 +402,8 @@
      </func>
 
     <func>
-      <name>pwrite(ChannelPid, Handle, Position, Data) -> ok</name>
-      <name>pwrite(ChannelPid, Handle, Position, Data, Timeout) -> ok | {error, reason()}</name>
+      <name since="">pwrite(ChannelPid, Handle, Position, Data) -> ok</name>
+      <name since="">pwrite(ChannelPid, Handle, Position, Data, Timeout) -> ok | {error, reason()}</name>
       <fsummary>Writes to an open file.</fsummary>
       <type>
         <v>ChannelPid = pid()</v>
@@ -419,8 +419,8 @@
     </func>
 
     <func>
-      <name>read(ChannelPid, Handle, Len) -></name>
-      <name>read(ChannelPid, Handle, Len, Timeout) -> {ok, Data} | eof | {error, reason()}</name>
+      <name since="">read(ChannelPid, Handle, Len) -></name>
+      <name since="">read(ChannelPid, Handle, Len, Timeout) -> {ok, Data} | eof | {error, reason()}</name>
       <fsummary>Reads from an open file.</fsummary>
       <type>
         <v>ChannelPid = pid()</v>
@@ -441,8 +441,8 @@
     </func>
 
       <func>
-      <name>read_file(ChannelPid, File) -></name>
-      <name>read_file(ChannelPid, File, Timeout) -> {ok, Data} | {error, reason()}</name>
+      <name since="">read_file(ChannelPid, File) -></name>
+      <name since="">read_file(ChannelPid, File, Timeout) -> {ok, Data} | {error, reason()}</name>
       <fsummary>Reads a file.</fsummary>
       <type>
 	<v>ChannelPid = pid()</v>
@@ -456,8 +456,8 @@
     </func>
 
       <func>
-      <name>read_file_info(ChannelPid, Name) -></name>
-      <name>read_file_info(ChannelPid, Name, Timeout) -> {ok, FileInfo} | {error, reason()}</name>
+      <name since="">read_file_info(ChannelPid, Name) -></name>
+      <name since="">read_file_info(ChannelPid, Name, Timeout) -> {ok, FileInfo} | {error, reason()}</name>
       <fsummary>Gets information about a file.</fsummary>
       <type>
         <v>ChannelPid = pid()</v>
@@ -481,8 +481,8 @@
     </func>
 
      <func>
-      <name>read_link(ChannelPid, Name) -></name>
-      <name>read_link(ChannelPid, Name, Timeout) -> {ok, Target} | {error, reason()}</name>
+      <name since="">read_link(ChannelPid, Name) -></name>
+      <name since="">read_link(ChannelPid, Name, Timeout) -> {ok, Target} | {error, reason()}</name>
       <fsummary>Reads symbolic link.</fsummary>
       <type>
         <v>ChannelPid = pid()</v>
@@ -496,8 +496,8 @@
     </func>
 
      <func>
-      <name>read_link_info(ChannelPid, Name) -> {ok, FileInfo} | {error, reason()}</name>
-      <name>read_link_info(ChannelPid, Name, Timeout) -> {ok, FileInfo} | {error, reason()}</name>
+      <name since="">read_link_info(ChannelPid, Name) -> {ok, FileInfo} | {error, reason()}</name>
+      <name since="">read_link_info(ChannelPid, Name, Timeout) -> {ok, FileInfo} | {error, reason()}</name>
       <fsummary>Gets information about a symbolic link.</fsummary>
       <type>
         <v>ChannelPid = pid()</v>
@@ -517,8 +517,8 @@
     </func>
 
     <func>
-      <name>rename(ChannelPid, OldName, NewName) -> </name>
-      <name>rename(ChannelPid, OldName, NewName, Timeout) -> ok | {error, reason()}</name>
+      <name since="">rename(ChannelPid, OldName, NewName) -> </name>
+      <name since="">rename(ChannelPid, OldName, NewName, Timeout) -> ok | {error, reason()}</name>
       <fsummary>Renames a file.</fsummary>
       <type>
         <v>ChannelPid = pid()</v>
@@ -534,16 +534,16 @@
     </func>
 
     <func>
-      <name>start_channel(ConnectionRef) -></name>
-      <name>start_channel(ConnectionRef, Options) ->
+      <name since="">start_channel(ConnectionRef) -></name>
+      <name since="">start_channel(ConnectionRef, Options) ->
       {ok, Pid} | {error, reason()|term()}</name>
 
-      <name>start_channel(Host, Options) -></name>
-      <name>start_channel(Host, Port, Options) -> 
+      <name since="">start_channel(Host, Options) -></name>
+      <name since="">start_channel(Host, Port, Options) -> 
       {ok, Pid, ConnectionRef} | {error, reason()|term()}</name>
 
-      <name>start_channel(TcpSocket) -></name>
-      <name>start_channel(TcpSocket, Options) ->
+      <name since="">start_channel(TcpSocket) -></name>
+      <name since="">start_channel(TcpSocket, Options) ->
       {ok, Pid, ConnectionRef} | {error, reason()|term()}</name>
 
       <fsummary>Starts an SFTP client.</fsummary>
@@ -594,7 +594,7 @@
     </func>
 
      <func>
-      <name>stop_channel(ChannelPid) -> ok</name>
+      <name since="">stop_channel(ChannelPid) -> ok</name>
       <fsummary>Stops the SFTP client channel.</fsummary>
       <type>
         <v>ChannelPid = pid()</v>
@@ -606,8 +606,8 @@
     </func>
 
     <func>
-      <name>write(ChannelPid, Handle, Data) -></name>
-      <name>write(ChannelPid, Handle, Data, Timeout) -> ok | {error, reason()}</name>
+      <name since="">write(ChannelPid, Handle, Data) -></name>
+      <name since="">write(ChannelPid, Handle, Data, Timeout) -> ok | {error, reason()}</name>
       <fsummary>Writes to an open file.</fsummary>
       <type>
         <v>ChannelPid = pid()</v>
@@ -625,8 +625,8 @@
     </func>
     
     <func>
-      <name>write_file(ChannelPid, File, Iolist) -></name>
-      <name>write_file(ChannelPid, File, Iolist, Timeout) -> ok | {error, reason()}</name>
+      <name since="">write_file(ChannelPid, File, Iolist) -></name>
+      <name since="">write_file(ChannelPid, File, Iolist, Timeout) -> ok | {error, reason()}</name>
       <fsummary>Writes a file.</fsummary>
       <type>
         <v>ChannelPid = pid()</v>
@@ -641,8 +641,8 @@
     </func>
     
     <func>
-      <name>write_file_info(ChannelPid, Name, Info) -></name>
-      <name>write_file_info(ChannelPid, Name, Info, Timeout) -> ok | {error, reason()}</name>
+      <name since="">write_file_info(ChannelPid, Name, Info) -></name>
+      <name since="">write_file_info(ChannelPid, Name, Info, Timeout) -> ok | {error, reason()}</name>
       <fsummary>Writes information for a file.</fsummary>
       <type>
         <v>ChannelPid = pid()</v>
diff --git a/lib/ssh/doc/src/ssh_sftpd.xml b/lib/ssh/doc/src/ssh_sftpd.xml
index 3b34150e98..ee72784add 100644
--- a/lib/ssh/doc/src/ssh_sftpd.xml
+++ b/lib/ssh/doc/src/ssh_sftpd.xml
@@ -29,7 +29,7 @@
     <rev></rev>
     <file>ssh_sftpd.sgml</file>
   </header>
-  <module>ssh_sftpd</module>
+  <module since="">ssh_sftpd</module>
   <modulesummary>Specifies the channel process to handle an SFTP subsystem.</modulesummary>
   <description>
     <p>Specifies a channel process to handle an SFTP subsystem.</p>
@@ -51,7 +51,7 @@
   </section>
   <funcs>
     <func>
-      <name>subsystem_spec(Options) -> subsystem_spec()</name>
+      <name since="">subsystem_spec(Options) -> subsystem_spec()</name>
       <fsummary>Returns the subsystem specification that allows an SSH daemon to handle the subsystem "sftp".</fsummary>
       <type>
 	<v>Options = [{Option, Value}]</v>
diff --git a/lib/ssh/src/ssh.erl b/lib/ssh/src/ssh.erl
index 086fa6e5f8..9281bf84a7 100644
--- a/lib/ssh/src/ssh.erl
+++ b/lib/ssh/src/ssh.erl
@@ -270,25 +270,38 @@ daemon(Host0, Port0, UserOptions0) when 0 =< Port0, Port0 =< 65535,
     try
         {Host1, UserOptions} = handle_daemon_args(Host0, UserOptions0),
         #{} = Options0 = ssh_options:handle_options(server, UserOptions),
-
-        {{Host,Port}, ListenSocket} =
-            open_listen_socket(Host1, Port0, Options0),
-
-        %% Now Host,Port is what to use for the supervisor to register its name,
-        %% and ListenSocket is for listening on connections. But it is still owned
-        %% by self()...
-
-        finalize_start(Host, Port, ?GET_OPT(profile, Options0),
-                       ?PUT_INTERNAL_OPT({lsocket,{ListenSocket,self()}}, Options0),
-                       fun(Opts, Result) ->
-                               {_, Callback, _} = ?GET_OPT(transport, Opts),
-                               receive
-                                   {request_control, ListenSocket, ReqPid} ->
-                                       ok = Callback:controlling_process(ListenSocket, ReqPid),
-                                       ReqPid ! {its_yours,ListenSocket},
-                                       Result
-                               end
-                       end)
+        {open_listen_socket(Host1, Port0, Options0), Options0}
+    of
+        {{{Host,Port}, ListenSocket}, Options1} ->
+            try
+                %% Now Host,Port is what to use for the supervisor to register its name,
+                %% and ListenSocket is for listening on connections. But it is still owned
+                %% by self()...
+                finalize_start(Host, Port, ?GET_OPT(profile, Options1),
+                               ?PUT_INTERNAL_OPT({lsocket,{ListenSocket,self()}}, Options1),
+                               fun(Opts, Result) ->
+                                       {_, Callback, _} = ?GET_OPT(transport, Opts),
+                                       receive
+                                           {request_control, ListenSocket, ReqPid} ->
+                                               ok = Callback:controlling_process(ListenSocket, ReqPid),
+                                               ReqPid ! {its_yours,ListenSocket},
+                                               Result
+                                       end
+                               end)
+            of
+                {error,Err} ->
+                    close_listen_socket(ListenSocket, Options1),
+                    {error,Err};
+                OK ->
+                    OK
+            catch
+                error:Error ->
+                    close_listen_socket(ListenSocket, Options1),
+                    error(Error);
+                exit:Exit ->
+                    close_listen_socket(ListenSocket, Options1),
+                    exit(Exit)
+            end
     catch
         throw:bad_fd ->
             {error,bad_fd};
@@ -524,6 +537,15 @@ open_listen_socket(_Host0, Port0, Options0) ->
     {{LHost,LPort}, LSock}.
 
 %%%----------------------------------------------------------------
+close_listen_socket(ListenSocket, Options) ->
+    try
+        {_, Callback, _} = ?GET_OPT(transport, Options),
+        Callback:close(ListenSocket)
+    catch
+        _C:_E -> ok
+    end.
+
+%%%----------------------------------------------------------------
 finalize_start(Host, Port, Profile, Options0, F) ->
     try
         %% throws error:Error if no usable hostkey is found
diff --git a/lib/ssh/src/ssh_sftpd.erl b/lib/ssh/src/ssh_sftpd.erl
index 278f6a9780..aa9ba0f9bb 100644
--- a/lib/ssh/src/ssh_sftpd.erl
+++ b/lib/ssh/src/ssh_sftpd.erl
@@ -508,11 +508,8 @@ close_our_file({_,Fd}, FileMod, FS0) ->
     FS1.
 
 %%% stat: do the stat
-stat(Vsn, ReqId, Data, State, F) when Vsn =< 3->
-    <<?UINT32(BLen), BPath:BLen/binary>> = Data,
-    stat(ReqId, unicode:characters_to_list(BPath), State, F);
-stat(Vsn, ReqId, Data, State, F) when Vsn >= 4->
-    <<?UINT32(BLen), BPath:BLen/binary, ?UINT32(_Flags)>> = Data,
+stat(Vsn, ReqId, Data, State, F) ->
+    <<?UINT32(BLen), BPath:BLen/binary, _/binary>> = Data,
     stat(ReqId, unicode:characters_to_list(BPath), State, F).
 
 fstat(Vsn, ReqId, Data, State) when Vsn =< 3->
diff --git a/lib/ssh/src/ssh_transport.erl b/lib/ssh/src/ssh_transport.erl
index 9ff20454cd..2299346a30 100644
--- a/lib/ssh/src/ssh_transport.erl
+++ b/lib/ssh/src/ssh_transport.erl
@@ -162,15 +162,15 @@ supported_algorithms(cipher) ->
       select_crypto_supported(
 	[
          {'[email protected]', [{ciphers,chacha20}, {macs,poly1305}]},
-         {'[email protected]', [{ciphers,{aes_gcm,256}}]},
-         {'aes256-ctr',       [{ciphers,{aes_ctr,256}}]},
-         {'aes192-ctr',       [{ciphers,{aes_ctr,192}}]},
-	 {'[email protected]', [{ciphers,{aes_gcm,128}}]},
-	 {'aes128-ctr',       [{ciphers,{aes_ctr,128}}]},
-	 {'AEAD_AES_256_GCM', [{ciphers,{aes_gcm,256}}]},
-	 {'AEAD_AES_128_GCM', [{ciphers,{aes_gcm,128}}]},
-	 {'aes128-cbc',       [{ciphers,aes_cbc128}]},
-	 {'3des-cbc',         [{ciphers,des3_cbc}]}
+         {'[email protected]', [{ciphers,aes_256_gcm}]},
+         {'aes256-ctr',       [{ciphers,aes_256_ctr}]},
+         {'aes192-ctr',       [{ciphers,aes_192_ctr}]},
+	 {'[email protected]', [{ciphers,aes_128_gcm}]},
+	 {'aes128-ctr',       [{ciphers,aes_128_ctr}]},
+	 {'AEAD_AES_256_GCM', [{ciphers,aes_256_gcm}]},
+	 {'AEAD_AES_128_GCM', [{ciphers,aes_128_gcm}]},
+	 {'aes128-cbc',       [{ciphers,aes_128_cbc}]},
+	 {'3des-cbc',         [{ciphers,des_ede3_cbc}]}
 	]
        ));
 supported_algorithms(mac) ->
@@ -179,8 +179,8 @@ supported_algorithms(mac) ->
 	[{'hmac-sha2-256',    [{macs,hmac}, {hashs,sha256}]},
 	 {'hmac-sha2-512',    [{macs,hmac}, {hashs,sha512}]},
 	 {'hmac-sha1',        [{macs,hmac}, {hashs,sha}]},
-	 {'AEAD_AES_128_GCM', [{ciphers,{aes_gcm,128}}]},
-	 {'AEAD_AES_256_GCM', [{ciphers,{aes_gcm,256}}]}
+	 {'AEAD_AES_128_GCM', [{ciphers,aes_128_gcm}]},
+	 {'AEAD_AES_256_GCM', [{ciphers,aes_256_gcm}]}
 	]
        ));
 supported_algorithms(compression) ->
@@ -1256,11 +1256,6 @@ get_length(aead, EncryptedBuffer, Ssh) ->
     end.
 
 
-pkt_type('AEAD_AES_128_GCM') -> aead;
-pkt_type('AEAD_AES_256_GCM') -> aead;
-pkt_type('[email protected]') -> aead;
-pkt_type(_) -> common.
-
 payload(<<PacketLen:32, PaddingLen:8, PayloadAndPadding/binary>>) ->
     PayloadLen = PacketLen - PaddingLen - 1,
     <<Payload:PayloadLen/binary, _/binary>> = PayloadAndPadding,
@@ -1323,162 +1318,115 @@ verify(PlainText, HashAlg, Sig, Key, _) ->
 
 %%% Unit: bytes
 
--record(cipher_data, {
-          key_bytes,
-          iv_bytes,
-          block_bytes
-         }).
+-record(cipher, {
+                 impl,
+                 key_bytes,
+                 iv_bytes,
+                 block_bytes,
+                 pkt_type = common
+                }).
 
 %%% Start of a more parameterized crypto handling.
 cipher('AEAD_AES_128_GCM') ->
-    #cipher_data{key_bytes = 16,
-                 iv_bytes = 12,
-                 block_bytes = 16};
+    #cipher{key_bytes = 16,
+            iv_bytes = 12,
+            block_bytes = 16,
+            pkt_type = aead};
 
 cipher('AEAD_AES_256_GCM') ->
-    #cipher_data{key_bytes = 32,
-                 iv_bytes = 12,
-                 block_bytes = 16};
+    #cipher{key_bytes = 32,
+            iv_bytes = 12,
+            block_bytes = 16,
+            pkt_type = aead};
 
 cipher('3des-cbc') ->
-    #cipher_data{key_bytes = 24,
-                 iv_bytes = 8,
-                 block_bytes = 8};
+    #cipher{impl = des_ede3_cbc,
+            key_bytes = 24,
+            iv_bytes = 8,
+            block_bytes = 8};
     
 cipher('aes128-cbc') ->
-    #cipher_data{key_bytes = 16,
-                 iv_bytes = 16,
-                 block_bytes = 16};
+    #cipher{impl = aes_cbc,
+            key_bytes = 16,
+            iv_bytes = 16,
+            block_bytes = 16};
 
 cipher('aes128-ctr') ->
-    #cipher_data{key_bytes = 16,
-                 iv_bytes = 16,
-                 block_bytes = 16};
+    #cipher{impl = aes_128_ctr,
+            key_bytes = 16,
+            iv_bytes = 16,
+            block_bytes = 16};
 
 cipher('aes192-ctr') ->
-    #cipher_data{key_bytes = 24,
-                 iv_bytes = 16,
-                 block_bytes = 16};
+    #cipher{impl = aes_192_ctr,
+            key_bytes = 24,
+            iv_bytes = 16,
+            block_bytes = 16};
 
 cipher('aes256-ctr') ->
-    #cipher_data{key_bytes = 32,
-                 iv_bytes = 16,
-                 block_bytes = 16};
+    #cipher{impl = aes_256_ctr,
+            key_bytes = 32,
+            iv_bytes = 16,
+            block_bytes = 16};
 
 cipher('[email protected]') -> % FIXME: Verify!!
-    #cipher_data{key_bytes = 32,
-                 iv_bytes = 12,
-                 block_bytes = 8}.
-    
+    #cipher{key_bytes = 32,
+            iv_bytes = 12,
+            block_bytes = 8,
+            pkt_type = aead};
+
+cipher(_) -> 
+    #cipher{}.
+
+
+pkt_type(SshCipher) -> (cipher(SshCipher))#cipher.pkt_type.
+
+decrypt_magic(server) -> {"A", "C"};
+decrypt_magic(client) -> {"B", "D"}.
+
+encrypt_magic(client) -> decrypt_magic(server);
+encrypt_magic(server) -> decrypt_magic(client).
+
 
 
 encrypt_init(#ssh{encrypt = none} = Ssh) ->
     {ok, Ssh};
-encrypt_init(#ssh{encrypt = '[email protected]', role = client} = Ssh) ->
+
+encrypt_init(#ssh{encrypt = '[email protected]', role = Role} = Ssh) ->
     %% [email protected] uses two independent crypto streams, one (chacha20)
     %% for the length used in stream mode, and the other (chacha20-poly1305) as AEAD for
     %% the payload and to MAC the length||payload.
     %% See draft-josefsson-ssh-chacha20-poly1305-openssh-00
-    <<K2:32/binary,K1:32/binary>> = hash(Ssh, "C", 512),
+    {_, KeyMagic} = encrypt_magic(Role),
+    <<K2:32/binary,K1:32/binary>> = hash(Ssh, KeyMagic, 8*64),
     {ok, Ssh#ssh{encrypt_keys = {K1,K2}
                 % encrypt_block_size = 16, %default = 8.  What to set it to? 64 (openssl chacha.h)
                  % ctx and iv is setup for each packet
                 }};
-encrypt_init(#ssh{encrypt = '[email protected]', role = server} = Ssh) ->
-    <<K2:32/binary,K1:32/binary>> = hash(Ssh, "D", 512),
-    {ok, Ssh#ssh{encrypt_keys = {K1,K2}
-                % encrypt_block_size = 16, %default = 8.  What to set it to?
-                }};
-encrypt_init(#ssh{encrypt = 'AEAD_AES_128_GCM', role = client} = Ssh) ->
-    IV = hash(Ssh, "A", 12*8),
-    <<K:16/binary>> = hash(Ssh, "C", 128),
-    {ok, Ssh#ssh{encrypt_keys = K,
-		 encrypt_block_size = 16,
-		 encrypt_ctx = IV}};
-encrypt_init(#ssh{encrypt = 'AEAD_AES_128_GCM', role = server} = Ssh) ->
-    IV = hash(Ssh, "B", 12*8),
-    <<K:16/binary>> = hash(Ssh, "D", 128),
-    {ok, Ssh#ssh{encrypt_keys = K,
-		 encrypt_block_size = 16,
-		 encrypt_ctx = IV}};
-encrypt_init(#ssh{encrypt = 'AEAD_AES_256_GCM', role = client} = Ssh) ->
-    IV = hash(Ssh, "A", 12*8),
-    <<K:32/binary>> = hash(Ssh, "C", 256),
-    {ok, Ssh#ssh{encrypt_keys = K,
-		 encrypt_block_size = 16,
-		 encrypt_ctx = IV}};
-encrypt_init(#ssh{encrypt = 'AEAD_AES_256_GCM', role = server} = Ssh) ->
-    IV = hash(Ssh, "B", 12*8),
-    <<K:32/binary>> = hash(Ssh, "D", 256),
-    {ok, Ssh#ssh{encrypt_keys = K,
-		 encrypt_block_size = 16,
-		 encrypt_ctx = IV}};
-encrypt_init(#ssh{encrypt = '3des-cbc', role = client} = Ssh) ->
-    IV = hash(Ssh, "A", 64),
-    <<K1:8/binary, K2:8/binary, K3:8/binary>> = hash(Ssh, "C", 192),
-    {ok, Ssh#ssh{encrypt_keys = {K1,K2,K3},
-		 encrypt_block_size = 8,
-		 encrypt_ctx = IV}};
-encrypt_init(#ssh{encrypt = '3des-cbc', role = server} = Ssh) ->
-    IV = hash(Ssh, "B", 64),
-    <<K1:8/binary, K2:8/binary, K3:8/binary>> = hash(Ssh, "D", 192),
-    {ok, Ssh#ssh{encrypt_keys = {K1,K2,K3},
-		 encrypt_block_size = 8,
-		 encrypt_ctx = IV}};
-encrypt_init(#ssh{encrypt = 'aes128-cbc', role = client} = Ssh) ->
-    IV = hash(Ssh, "A", 128),
-    <<K:16/binary>> = hash(Ssh, "C", 128),
+
+encrypt_init(#ssh{encrypt = SshCipher, role = Role} = Ssh) when SshCipher == 'AEAD_AES_128_GCM';
+                                                                SshCipher == 'AEAD_AES_256_GCM' ->
+    {IvMagic, KeyMagic} = encrypt_magic(Role),
+    #cipher{key_bytes = KeyBytes,
+            iv_bytes = IvBytes,
+            block_bytes = BlockBytes} = cipher(SshCipher),
+    IV = hash(Ssh, IvMagic, 8*IvBytes),
+    K = hash(Ssh, KeyMagic, 8*KeyBytes),
     {ok, Ssh#ssh{encrypt_keys = K,
-		 encrypt_block_size = 16,
+		 encrypt_block_size = BlockBytes,
 		 encrypt_ctx = IV}};
-encrypt_init(#ssh{encrypt = 'aes128-cbc', role = server} = Ssh) ->
-    IV = hash(Ssh, "B", 128),
-    <<K:16/binary>> = hash(Ssh, "D", 128),
-    {ok, Ssh#ssh{encrypt_keys = K,
-		 encrypt_block_size = 16,
-                 encrypt_ctx = IV}};
-encrypt_init(#ssh{encrypt = 'aes128-ctr', role = client} = Ssh) ->
-    IV = hash(Ssh, "A", 128),
-    <<K:16/binary>> = hash(Ssh, "C", 128),
-    State = crypto:stream_init(aes_ctr, K, IV),
-    {ok, Ssh#ssh{encrypt_keys = K,
-		 encrypt_block_size = 16,
-                 encrypt_ctx = State}};
-encrypt_init(#ssh{encrypt = 'aes192-ctr', role = client} = Ssh) ->
-    IV = hash(Ssh, "A", 128),
-    <<K:24/binary>> = hash(Ssh, "C", 192),
-    State = crypto:stream_init(aes_ctr, K, IV),
-    {ok, Ssh#ssh{encrypt_keys = K,
-		 encrypt_block_size = 16,
-                 encrypt_ctx = State}};
-encrypt_init(#ssh{encrypt = 'aes256-ctr', role = client} = Ssh) ->
-    IV = hash(Ssh, "A", 128),
-    <<K:32/binary>> = hash(Ssh, "C", 256),
-    State = crypto:stream_init(aes_ctr, K, IV),
-    {ok, Ssh#ssh{encrypt_keys = K,
-		 encrypt_block_size = 16,
-                 encrypt_ctx = State}};
-encrypt_init(#ssh{encrypt = 'aes128-ctr', role = server} = Ssh) ->
-    IV = hash(Ssh, "B", 128),
-    <<K:16/binary>> = hash(Ssh, "D", 128),
-    State = crypto:stream_init(aes_ctr, K, IV),
-    {ok, Ssh#ssh{encrypt_keys = K,
-		 encrypt_block_size = 16,
-                 encrypt_ctx = State}};
-encrypt_init(#ssh{encrypt = 'aes192-ctr', role = server} = Ssh) ->
-    IV = hash(Ssh, "B", 128),
-    <<K:24/binary>> = hash(Ssh, "D", 192),
-    State = crypto:stream_init(aes_ctr, K, IV),
-    {ok, Ssh#ssh{encrypt_keys = K,
-		 encrypt_block_size = 16,
-                 encrypt_ctx = State}};
-encrypt_init(#ssh{encrypt = 'aes256-ctr', role = server} = Ssh) ->
-    IV = hash(Ssh, "B", 128),
-    <<K:32/binary>> = hash(Ssh, "D", 256),
-    State = crypto:stream_init(aes_ctr, K, IV),
-    {ok, Ssh#ssh{encrypt_keys = K,
-		 encrypt_block_size = 16,
-                 encrypt_ctx = State}}.
+
+encrypt_init(#ssh{encrypt = SshCipher, role = Role} = Ssh) ->
+    {IvMagic, KeyMagic} = encrypt_magic(Role),
+    #cipher{impl = CryptoCipher,
+            key_bytes = KeyBytes,
+            iv_bytes = IvBytes,
+            block_bytes = BlockBytes} = cipher(SshCipher),
+    IV = hash(Ssh, IvMagic, 8*IvBytes),
+    K = hash(Ssh, KeyMagic, 8*KeyBytes),
+    Ctx0 = crypto:crypto_init(CryptoCipher, K, IV, true),
+    {ok, Ssh#ssh{encrypt_block_size = BlockBytes,
+                 encrypt_ctx = Ctx0}}.
 
 encrypt_final(Ssh) ->
     {ok, Ssh#ssh{encrypt = none, 
@@ -1487,249 +1435,126 @@ encrypt_final(Ssh) ->
 		 encrypt_ctx = undefined
 		}}.
 
+
 encrypt(#ssh{encrypt = none} = Ssh, Data) ->
     {Ssh, Data};
+
 encrypt(#ssh{encrypt = '[email protected]',
              encrypt_keys = {K1,K2},
              send_sequence = Seq} = Ssh,
         <<LenData:4/binary, PayloadData/binary>>) ->
     %% Encrypt length
     IV1 = <<0:8/unit:8, Seq:8/unit:8>>,
-    {_,EncLen} = crypto:stream_encrypt(crypto:stream_init(chacha20, K1, IV1),
-                                            LenData),
+    EncLen = crypto:crypto_one_time(chacha20, K1, IV1, LenData, true),
     %% Encrypt payload
     IV2 = <<1:8/little-unit:8, Seq:8/unit:8>>,
-     {_,EncPayloadData} = crypto:stream_encrypt(crypto:stream_init(chacha20, K2, IV2),
-                                                PayloadData),
-
+    EncPayloadData = crypto:crypto_one_time(chacha20, K2, IV2, PayloadData, true),
     %% MAC tag
-    {_,PolyKey} = crypto:stream_encrypt(crypto:stream_init(chacha20, K2, <<0:8/unit:8,Seq:8/unit:8>>),
-                                        <<0:32/unit:8>>),
+    PolyKey = crypto:crypto_one_time(chacha20, K2, <<0:8/unit:8,Seq:8/unit:8>>, <<0:32/unit:8>>, true),
     EncBytes = <<EncLen/binary,EncPayloadData/binary>>,
     Ctag = crypto:poly1305(PolyKey, EncBytes),
     %% Result
     {Ssh, {EncBytes,Ctag}};
-encrypt(#ssh{encrypt = 'AEAD_AES_128_GCM',
-            encrypt_keys = K,
+
+encrypt(#ssh{encrypt = SshCipher,
+             encrypt_keys = K,
              encrypt_ctx = IV0} = Ssh,
-        <<LenData:4/binary, PayloadData/binary>>) ->
-    {Ctext,Ctag} = crypto:block_encrypt(aes_gcm, K, IV0, {LenData,PayloadData}),
-    IV = next_gcm_iv(IV0),
-    {Ssh#ssh{encrypt_ctx = IV}, {<<LenData/binary,Ctext/binary>>,Ctag}};
-encrypt(#ssh{encrypt = 'AEAD_AES_256_GCM',
-            encrypt_keys = K,
-             encrypt_ctx = IV0} = Ssh, 
-        <<LenData:4/binary, PayloadData/binary>>) ->
+        <<LenData:4/binary, PayloadData/binary>>) when SshCipher == 'AEAD_AES_128_GCM' ;
+                                                       SshCipher == 'AEAD_AES_256_GCM' ->
     {Ctext,Ctag} = crypto:block_encrypt(aes_gcm, K, IV0, {LenData,PayloadData}),
     IV = next_gcm_iv(IV0),
     {Ssh#ssh{encrypt_ctx = IV}, {<<LenData/binary,Ctext/binary>>,Ctag}};
-encrypt(#ssh{encrypt = '3des-cbc',
-	     encrypt_keys = {K1,K2,K3},
-	     encrypt_ctx = IV0} = Ssh, Data) ->
-    Enc = crypto:block_encrypt(des3_cbc, [K1,K2,K3], IV0, Data),
-    IV = crypto:next_iv(des3_cbc, Enc),
-    {Ssh#ssh{encrypt_ctx = IV}, Enc};
-encrypt(#ssh{encrypt = 'aes128-cbc',
-            encrypt_keys = K,
-            encrypt_ctx = IV0} = Ssh, Data) ->
-    Enc = crypto:block_encrypt(aes_cbc128, K,IV0,Data),
-    IV = crypto:next_iv(aes_cbc, Enc),
-    {Ssh#ssh{encrypt_ctx = IV}, Enc};
-encrypt(#ssh{encrypt = 'aes128-ctr',
-            encrypt_ctx = State0} = Ssh, Data) ->
-    {State, Enc} = crypto:stream_encrypt(State0,Data),
-    {Ssh#ssh{encrypt_ctx = State}, Enc};
-encrypt(#ssh{encrypt = 'aes192-ctr',
-            encrypt_ctx = State0} = Ssh, Data) ->
-    {State, Enc} = crypto:stream_encrypt(State0,Data),
-    {Ssh#ssh{encrypt_ctx = State}, Enc};
-encrypt(#ssh{encrypt = 'aes256-ctr',
-            encrypt_ctx = State0} = Ssh, Data) ->
-    {State, Enc} = crypto:stream_encrypt(State0,Data),
-    {Ssh#ssh{encrypt_ctx = State}, Enc}.
-  
 
+encrypt(#ssh{encrypt_ctx = Ctx0} = Ssh, Data) ->
+    Enc = crypto:crypto_update(Ctx0, Data),
+    {Ssh, Enc}.
+  
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %% Decryption
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 decrypt_init(#ssh{decrypt = none} = Ssh) ->
     {ok, Ssh};
-decrypt_init(#ssh{decrypt = '[email protected]', role = client} = Ssh) ->
-    <<K2:32/binary,K1:32/binary>> = hash(Ssh, "D", 512),
-    {ok, Ssh#ssh{decrypt_keys = {K1,K2}
-                }};
-decrypt_init(#ssh{decrypt = '[email protected]', role = server} = Ssh) ->
-    <<K2:32/binary,K1:32/binary>> = hash(Ssh, "C", 512),
+
+decrypt_init(#ssh{decrypt = '[email protected]', role = Role} = Ssh) ->
+    {_, KeyMagic} = decrypt_magic(Role),
+    <<K2:32/binary,K1:32/binary>> = hash(Ssh, KeyMagic, 8*64),
     {ok, Ssh#ssh{decrypt_keys = {K1,K2}
                 }};
-decrypt_init(#ssh{decrypt = 'AEAD_AES_128_GCM', role = client} = Ssh) ->
-    IV = hash(Ssh, "B", 12*8),
-    <<K:16/binary>> = hash(Ssh, "D", 128),
-    {ok, Ssh#ssh{decrypt_keys = K,
-		 decrypt_block_size = 16,
-		 decrypt_ctx = IV}};
-decrypt_init(#ssh{decrypt = 'AEAD_AES_128_GCM', role = server} = Ssh) ->
-    IV = hash(Ssh, "A", 12*8),
-    <<K:16/binary>> = hash(Ssh, "C", 128),
-    {ok, Ssh#ssh{decrypt_keys = K,
-		 decrypt_block_size = 16,
-		 decrypt_ctx = IV}};
-decrypt_init(#ssh{decrypt = 'AEAD_AES_256_GCM', role = client} = Ssh) ->
-    IV = hash(Ssh, "B", 12*8),
-    <<K:32/binary>> = hash(Ssh, "D", 256),
-    {ok, Ssh#ssh{decrypt_keys = K,
-		 decrypt_block_size = 16,
-		 decrypt_ctx = IV}};
-decrypt_init(#ssh{decrypt = 'AEAD_AES_256_GCM', role = server} = Ssh) ->
-    IV = hash(Ssh, "A", 12*8),
-    <<K:32/binary>> = hash(Ssh, "C", 256),
+
+decrypt_init(#ssh{decrypt = SshCipher, role = Role} = Ssh) when SshCipher == 'AEAD_AES_128_GCM';
+                                                                SshCipher == 'AEAD_AES_256_GCM' ->
+    {IvMagic, KeyMagic} = decrypt_magic(Role),
+    #cipher{key_bytes = KeyBytes,
+            iv_bytes = IvBytes,
+            block_bytes = BlockBytes} = cipher(SshCipher),
+    IV = hash(Ssh, IvMagic, 8*IvBytes),
+    K = hash(Ssh, KeyMagic, 8*KeyBytes),
     {ok, Ssh#ssh{decrypt_keys = K,
-		 decrypt_block_size = 16,
+		 decrypt_block_size = BlockBytes,
 		 decrypt_ctx = IV}};
-decrypt_init(#ssh{decrypt = '3des-cbc', role = client} = Ssh) ->
-    {IV, KD} = {hash(Ssh, "B", 64),
-		hash(Ssh, "D", 192)},
-    <<K1:8/binary, K2:8/binary, K3:8/binary>> = KD,
-    {ok, Ssh#ssh{decrypt_keys = {K1,K2,K3}, decrypt_ctx = IV,
-			 decrypt_block_size = 8}}; 
-decrypt_init(#ssh{decrypt = '3des-cbc', role = server} = Ssh) ->
-    {IV, KD} = {hash(Ssh, "A", 64),
-		hash(Ssh, "C", 192)},
-    <<K1:8/binary, K2:8/binary, K3:8/binary>> = KD,
-    {ok, Ssh#ssh{decrypt_keys = {K1, K2, K3}, decrypt_ctx = IV,
-		 decrypt_block_size = 8}};
-decrypt_init(#ssh{decrypt = 'aes128-cbc', role = client} = Ssh) ->
-    {IV, KD} = {hash(Ssh, "B", 128),
-		hash(Ssh, "D", 128)},
-    <<K:16/binary>> = KD,
-    {ok, Ssh#ssh{decrypt_keys = K, decrypt_ctx = IV,
-		 decrypt_block_size = 16}};
-decrypt_init(#ssh{decrypt = 'aes128-cbc', role = server} = Ssh) ->
-    {IV, KD} = {hash(Ssh, "A", 128),
-		hash(Ssh, "C", 128)},
-    <<K:16/binary>> = KD,
-    {ok, Ssh#ssh{decrypt_keys = K, decrypt_ctx = IV,
-		 decrypt_block_size = 16}};
-decrypt_init(#ssh{decrypt = 'aes128-ctr', role = client} = Ssh) ->
-	IV = hash(Ssh, "B", 128),
-    <<K:16/binary>> = hash(Ssh, "D", 128),
-    State = crypto:stream_init(aes_ctr, K, IV),
-    {ok, Ssh#ssh{decrypt_keys = K,
-		 decrypt_block_size = 16,
-                 decrypt_ctx = State}};
-decrypt_init(#ssh{decrypt = 'aes192-ctr', role = client} = Ssh) ->
-	IV = hash(Ssh, "B", 128),
-    <<K:24/binary>> = hash(Ssh, "D", 192),
-    State = crypto:stream_init(aes_ctr, K, IV),
-    {ok, Ssh#ssh{decrypt_keys = K,
-		 decrypt_block_size = 16,
-                 decrypt_ctx = State}};
-decrypt_init(#ssh{decrypt = 'aes256-ctr', role = client} = Ssh) ->
-	IV = hash(Ssh, "B", 128),
-    <<K:32/binary>> = hash(Ssh, "D", 256),
-    State = crypto:stream_init(aes_ctr, K, IV),
-    {ok, Ssh#ssh{decrypt_keys = K,
-		 decrypt_block_size = 16,
-                 decrypt_ctx = State}};
-decrypt_init(#ssh{decrypt = 'aes128-ctr', role = server} = Ssh) ->
-	IV = hash(Ssh, "A", 128),
-    <<K:16/binary>> = hash(Ssh, "C", 128),
-    State = crypto:stream_init(aes_ctr, K, IV),
-    {ok, Ssh#ssh{decrypt_keys = K,
-		 decrypt_block_size = 16,
-                 decrypt_ctx = State}};
-decrypt_init(#ssh{decrypt = 'aes192-ctr', role = server} = Ssh) ->
-	IV = hash(Ssh, "A", 128),
-    <<K:24/binary>> = hash(Ssh, "C", 192),
-    State = crypto:stream_init(aes_ctr, K, IV),
-    {ok, Ssh#ssh{decrypt_keys = K,
-		 decrypt_block_size = 16,
-                 decrypt_ctx = State}};
-decrypt_init(#ssh{decrypt = 'aes256-ctr', role = server} = Ssh) ->
-	IV = hash(Ssh, "A", 128),
-    <<K:32/binary>> = hash(Ssh, "C", 256),
-    State = crypto:stream_init(aes_ctr, K, IV),
-    {ok, Ssh#ssh{decrypt_keys = K,
-		 decrypt_block_size = 16,
-                 decrypt_ctx = State}}.
 
-  
+decrypt_init(#ssh{decrypt = SshCipher, role = Role} = Ssh) ->
+    {IvMagic, KeyMagic} = decrypt_magic(Role),
+    #cipher{impl = CryptoCipher,
+            key_bytes = KeyBytes,
+            iv_bytes = IvBytes,
+            block_bytes = BlockBytes} = cipher(SshCipher),
+    IV = hash(Ssh, IvMagic, 8*IvBytes),
+    K = hash(Ssh, KeyMagic, 8*KeyBytes),
+    Ctx0 = crypto:crypto_init(CryptoCipher, K, IV, false),
+    {ok, Ssh#ssh{decrypt_block_size = BlockBytes,
+                 decrypt_ctx = Ctx0}}.
+
 decrypt_final(Ssh) ->
     {ok, Ssh#ssh {decrypt = none, 
 		  decrypt_keys = undefined,
 		  decrypt_ctx = undefined,
 		  decrypt_block_size = 8}}.
 
+
 decrypt(Ssh, <<>>) ->
     {Ssh, <<>>};
+
 decrypt(#ssh{decrypt = '[email protected]',
              decrypt_keys = {K1,_K2},
              recv_sequence = Seq} = Ssh, {length,EncryptedLen}) ->
-    {_State,PacketLenBin} =
-        crypto:stream_decrypt(crypto:stream_init(chacha20, K1, <<0:8/unit:8, Seq:8/unit:8>>),
-                              EncryptedLen),
+    PacketLenBin = crypto:crypto_one_time(chacha20, K1, <<0:8/unit:8, Seq:8/unit:8>>, EncryptedLen, false),
     {Ssh, PacketLenBin};
+
 decrypt(#ssh{decrypt = '[email protected]',
              decrypt_keys = {_K1,K2},
              recv_sequence = Seq} = Ssh, {AAD,Ctext,Ctag}) ->
     %% The length is already decoded and used to divide the input
     %% Check the mac (important that it is timing-safe):
-    {_,PolyKey} =
-        crypto:stream_encrypt(crypto:stream_init(chacha20, K2, <<0:8/unit:8,Seq:8/unit:8>>),
-                              <<0:32/unit:8>>),
+    PolyKey = crypto:crypto_one_time(chacha20, K2, <<0:8/unit:8,Seq:8/unit:8>>, <<0:32/unit:8>>, false),
     case equal_const_time(Ctag, crypto:poly1305(PolyKey, <<AAD/binary,Ctext/binary>>)) of
         true ->
             %% MAC is ok, decode
             IV2 = <<1:8/little-unit:8, Seq:8/unit:8>>,
-            {_,PlainText} =
-                crypto:stream_decrypt(crypto:stream_init(chacha20,K2,IV2), Ctext),
+            PlainText = crypto:crypto_one_time(chacha20, K2, IV2, Ctext, false),
             {Ssh, PlainText};
         false ->
            {Ssh,error}
     end;
+
 decrypt(#ssh{decrypt = none} = Ssh, Data) ->
     {Ssh, Data};
-decrypt(#ssh{decrypt = 'AEAD_AES_128_GCM',
-	     decrypt_keys = K,
-	     decrypt_ctx = IV0} = Ssh, Data = {_AAD,_Ctext,_Ctag}) ->
-    Dec = crypto:block_decrypt(aes_gcm, K, IV0, Data), % Dec = PlainText | error 
-    IV = next_gcm_iv(IV0),
-    {Ssh#ssh{decrypt_ctx = IV}, Dec};
-decrypt(#ssh{decrypt = 'AEAD_AES_256_GCM',
+
+decrypt(#ssh{decrypt = SshCipher,
 	     decrypt_keys = K,
-	     decrypt_ctx = IV0} = Ssh, Data = {_AAD,_Ctext,_Ctag}) ->
+	     decrypt_ctx = IV0} = Ssh, Data = {_AAD,_Ctext,_Ctag}) when SshCipher == 'AEAD_AES_128_GCM' ;
+                                                                        SshCipher == 'AEAD_AES_256_GCM' ->
     Dec = crypto:block_decrypt(aes_gcm, K, IV0, Data), % Dec = PlainText | error 
     IV = next_gcm_iv(IV0),
     {Ssh#ssh{decrypt_ctx = IV}, Dec};
-decrypt(#ssh{decrypt = '3des-cbc', decrypt_keys = Keys,
-	     decrypt_ctx = IV0} = Ssh, Data) ->
-    {K1, K2, K3} = Keys,
-    Dec = crypto:block_decrypt(des3_cbc, [K1,K2,K3], IV0, Data),
-    IV = crypto:next_iv(des3_cbc, Data),
-    {Ssh#ssh{decrypt_ctx = IV}, Dec};
-decrypt(#ssh{decrypt = 'aes128-cbc', decrypt_keys = Key,
-	     decrypt_ctx = IV0} = Ssh, Data) ->
-    Dec = crypto:block_decrypt(aes_cbc128, Key,IV0,Data),
-    IV = crypto:next_iv(aes_cbc, Data),
-    {Ssh#ssh{decrypt_ctx = IV}, Dec};
-decrypt(#ssh{decrypt = 'aes128-ctr',
-            decrypt_ctx = State0} = Ssh, Data) ->
-    {State, Enc} = crypto:stream_decrypt(State0,Data),
-    {Ssh#ssh{decrypt_ctx = State}, Enc};
-decrypt(#ssh{decrypt = 'aes192-ctr',
-            decrypt_ctx = State0} = Ssh, Data) ->
-    {State, Enc} = crypto:stream_decrypt(State0,Data),
-    {Ssh#ssh{decrypt_ctx = State}, Enc};
-decrypt(#ssh{decrypt = 'aes256-ctr',
-            decrypt_ctx = State0} = Ssh, Data) ->
-    {State, Enc} = crypto:stream_decrypt(State0,Data),
-    {Ssh#ssh{decrypt_ctx = State}, Enc}.
 
+decrypt(#ssh{decrypt_ctx = Ctx0} = Ssh, Data) ->
+    Dec = crypto:crypto_update(Ctx0, Data),
+    {Ssh, Dec}.
 
 next_gcm_iv(<<Fixed:32, InvCtr:64>>) -> <<Fixed:32, (InvCtr+1):64>>.
 
-
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %% Compression
 %%
@@ -2058,9 +1883,9 @@ compute_key(Algorithm, OthersPublic, MyPrivate, Args) ->
 dh_bits(#alg{encrypt = Encrypt,
              send_mac = SendMac}) ->
     C = cipher(Encrypt),
-    8 * lists:max([C#cipher_data.key_bytes,
-                   C#cipher_data.block_bytes,
-                   C#cipher_data.iv_bytes,
+    8 * lists:max([C#cipher.key_bytes,
+                   C#cipher.block_bytes,
+                   C#cipher.iv_bytes,
                    mac_key_bytes(SendMac)
                   ]).
 
@@ -2091,40 +1916,13 @@ select_crypto_supported(L) ->
 
 crypto_supported(Conditions, Supported) ->
     lists:all( fun({Tag,CryptoName}) when is_atom(CryptoName) ->
-		       crypto_name_supported(Tag,CryptoName,Supported);
-		  ({Tag,{Name,Len}}) when is_integer(Len) ->
-		       crypto_name_supported(Tag,Name,Supported) andalso
-			   len_supported(Name,Len)
+		       crypto_name_supported(Tag,CryptoName,Supported)
 	       end, Conditions).
 
 crypto_name_supported(Tag, CryptoName, Supported) ->
-    Vs = case proplists:get_value(Tag,Supported,[]) of
-             [] when Tag == curves -> crypto:ec_curves();
-             L -> L
-         end,
+    Vs = proplists:get_value(Tag,Supported,[]),
     lists:member(CryptoName, Vs).
 
-len_supported(Name, Len) ->
-    try
-	case Name of
-	    aes_ctr ->
-		{_, <<_/binary>>} = 
-		    %% Test encryption
-		    crypto:stream_encrypt(crypto:stream_init(Name, <<0:Len>>, <<0:128>>), <<"">>);
-	    aes_gcm ->
-		{<<_/binary>>, <<_/binary>>} = 
-		    crypto:block_encrypt(Name, 
-					 _Key = <<0:Len>>,
-					 _IV = <<0:12/unsigned-unit:8>>,
-					 {<<"AAD">>,"PT"})
-	end
-    of
-	_ -> true
-    catch
-	_:_ -> false
-    end.
-	    
-
 same(Algs) ->  [{client2server,Algs}, {server2client,Algs}].
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
diff --git a/lib/ssh/test/ssh_basic_SUITE.erl b/lib/ssh/test/ssh_basic_SUITE.erl
index da94b5722f..5de6d52092 100644
--- a/lib/ssh/test/ssh_basic_SUITE.erl
+++ b/lib/ssh/test/ssh_basic_SUITE.erl
@@ -43,7 +43,9 @@ suite() ->
      {timetrap,{seconds,40}}].
 
 all() -> 
-    [{group, all_tests}].
+    [{group, all_tests},
+     daemon_already_started
+    ].
 
 groups() ->
     [{all_tests, [parallel], [{group, ssh_renegotiate_SUITE},
@@ -801,6 +803,24 @@ daemon_already_started(Config) when is_list(Config) ->
     ssh:stop_daemon(Pid).
 
 %%--------------------------------------------------------------------
+%%% Test that a failed daemon start does not leave the port open
+daemon_error_closes_port(Config) ->
+    GoodSystemDir = proplists:get_value(data_dir, Config),
+    Port = ssh_test_lib:inet_port(),
+    {error,_} = ssh_test_lib:daemon(Port, []), % No system dir
+    case ssh_test_lib:daemon(Port, [{system_dir, GoodSystemDir}]) of
+        {error,eaddrinuse} ->
+            {fail, "Port leakage"};
+        {error,Error} ->
+            ct:log("Strange error: ~p",[Error]),
+            {fail, "Strange error"};
+        {Pid, _Host, Port} ->
+            %% Ok
+            ssh:stop_daemon(Pid)
+    end.
+    
+
+%%--------------------------------------------------------------------
 %%% check that known_hosts is updated correctly
 known_hosts(Config) when is_list(Config) ->
     SystemDir = proplists:get_value(data_dir, Config),
diff --git a/lib/ssh/test/ssh_bench_SUITE.erl b/lib/ssh/test/ssh_bench_SUITE.erl
index 764c52b624..2ac4e5636a 100644
--- a/lib/ssh/test/ssh_bench_SUITE.erl
+++ b/lib/ssh/test/ssh_bench_SUITE.erl
@@ -109,11 +109,10 @@ connect(Config) ->
     lists:foreach(
       fun(KexAlg) ->
               PrefAlgs = preferred_algorithms(KexAlg),
-              report([{value, measure_connect(Config,
-                                              [{preferred_algorithms,PrefAlgs}])},
-                      {suite, ?MODULE},
-                      {name, mk_name(["Connect erlc erld ",KexAlg," [µs]"])}
-                     ])
+              TimeMicroSec =  measure_connect(Config,
+                                              [{preferred_algorithms,PrefAlgs}]),
+              report(["Connect erlc erld ",KexAlg," [connects per sec]"],
+                     1000000 / TimeMicroSec)
       end, KexAlgs).
 
 
@@ -130,7 +129,7 @@ measure_connect(Config, Opts) ->
       [begin
            {Time, {ok,Pid}} = timer:tc(ssh,connect,["localhost", Port, ConnectOptions]),
            ssh:close(Pid),
-           Time
+           Time % in µs
        end || _ <- lists:seq(1,?Nruns)]).
 
 %%%----------------------------------------------------------------
@@ -178,10 +177,6 @@ gen_data(DataSz) ->
     <<Data0/binary, Data1/binary>>.
 
 
-%% connect_measure(Port, Cipher, Mac, Data, Options) ->
-%%     report([{value, 1},
-%%              {suite, ?MODULE},
-%%              {name, mk_name(["Transfer 1M bytes ",Cipher,"/",Mac," [µs]"])}]);
 connect_measure(Port, Cipher, Mac, Data, Options) ->
     AES_GCM = {cipher,
                []},
@@ -220,10 +215,8 @@ connect_measure(Port, Cipher, Mac, Data, Options) ->
              ssh:close(C),
              Time
          end || _ <- lists:seq(1,?Nruns)],
-    
-    report([{value, median(Times)},
-            {suite, ?MODULE},
-            {name, mk_name(["Transfer 1M bytes ",Cipher,"/",Mac," [µs]"])}]).
+    report(["Transfer ",Cipher,"/",Mac," [Mbyte per sec]"],
+           1000000 / median(Times)).
 
 send_wait_acc(C, Ch, Data) ->
     ssh_connection:send(C, Ch, Data),
@@ -238,12 +231,6 @@ send_wait_acc(C, Ch, Data) ->
 %%% 
 
 %%%----------------------------------------------------------------
-mk_name(Name) -> [char(C) || C <- lists:concat(Name)].
-
-char($-) -> $_;
-char(C) -> C.
-
-%%%----------------------------------------------------------------
 preferred_algorithms(KexAlg) ->
      [{kex,         [KexAlg]},
       {public_key,  ['ssh-rsa']},
@@ -265,11 +252,22 @@ median(Data) when is_list(Data) ->
             1 ->
                 lists:nth(N div 2 + 1, SortedData)
         end,
-    ct:log("median(~p) = ~p",[SortedData,Median]),
+    ct:pal("median(~p) = ~p",[SortedData,Median]),
     Median.
 
+%%%----------------------------------------------------------------
+report(LabelList, Value) ->
+    Label = report_chars(lists:concat(LabelList)),
+    ct:pal("ct_event:notify ~p: ~p", [Label, Value]),
+    ct_event:notify(
+      #event{name = benchmark_data,
+             data = [{suite, ?MODULE},
+                     {name,  Label},
+                     {value, Value}]}).
+
+report_chars(Cs) ->
+    [case C of
+         $- -> $_;
+         _ -> C
+     end || C <- Cs].
 
-report(Data) ->
-    ct:log("EventData = ~p",[Data]),
-    ct_event:notify(#event{name = benchmark_data,
-                           data = Data}).
diff --git a/lib/ssh/test/ssh_compat_SUITE.erl b/lib/ssh/test/ssh_compat_SUITE.erl
index f4eef2dc77..8e82527c6e 100644
--- a/lib/ssh/test/ssh_compat_SUITE.erl
+++ b/lib/ssh/test/ssh_compat_SUITE.erl
@@ -1126,7 +1126,24 @@ prepare_local_directory(ServerRootDir) ->
      "chmod 222 unreadable_file",
      "exit"].
 
+
 check_local_directory(ServerRootDir) ->
+    TimesToTry = 3,  % sleep 0.5, 1, 2 and then 4 secs (7.5s in total)
+    check_local_directory(ServerRootDir, 500, TimesToTry-1).
+
+check_local_directory(ServerRootDir, SleepTime, N) ->
+    case do_check_local_directory(ServerRootDir) of
+        {error,Error} when N>0 ->
+            %% Could be that the erlang side is faster and the docker's operations
+            %% are not yet finalized.
+            %% Sleep for a while and retry a few times:
+            timer:sleep(SleepTime),
+            check_local_directory(ServerRootDir, 2*SleepTime, N-1);
+        Other ->
+            Other
+    end.
+
+do_check_local_directory(ServerRootDir) ->
     case lists:sort(ok(file:list_dir(ServerRootDir)) -- [".",".."]) of
         ["ex_tst1","mydir","tst2"] ->
             {ok,Expect} = file:read_file(filename:join(ServerRootDir,"ex_tst1")),
@@ -1161,6 +1178,7 @@ check_local_directory(ServerRootDir) ->
             {error,{bad_dir_contents,"/"}}
     end.
 
+
 call_sftp_in_docker(Config, ServerIP, ServerPort, Cmnds, UserDir) ->
     {DockerIP,DockerPort} = ip_port(Config),
     {ok,C} = ssh:connect(DockerIP, DockerPort,
diff --git a/lib/ssh/test/ssh_connection_SUITE.erl b/lib/ssh/test/ssh_connection_SUITE.erl
index 778e4a5fc8..6aa587dc7f 100644
--- a/lib/ssh/test/ssh_connection_SUITE.erl
+++ b/lib/ssh/test/ssh_connection_SUITE.erl
@@ -1124,12 +1124,12 @@ start_our_shell(_User, _Peer) ->
 
 ssh_exec_echo(Cmd) ->
     spawn(fun() ->
-                  io:format("echo "++Cmd ++ "\n")
+                  io:format("echo ~s\n", [Cmd])
           end).
 
 ssh_exec_echo(Cmd, User) ->
     spawn(fun() ->
-                  io:format(io_lib:format("echo ~s ~s\n",[User,Cmd]))
+                  io:format("echo ~s ~s\n",[User,Cmd])
           end).
 ssh_exec_echo(Cmd, User, _PeerAddr) ->
     ssh_exec_echo(Cmd,User).
diff --git a/lib/ssh/test/ssh_protocol_SUITE.erl b/lib/ssh/test/ssh_protocol_SUITE.erl
index 3e3e151781..b12ddfeef6 100644
--- a/lib/ssh/test/ssh_protocol_SUITE.erl
+++ b/lib/ssh/test/ssh_protocol_SUITE.erl
@@ -38,7 +38,11 @@
 -define(EXTRA_KEX, 'diffie-hellman-group1-sha1').
 
 -define(CIPHERS, ['aes256-ctr','aes192-ctr','aes128-ctr','aes128-cbc','3des-cbc']).
--define(DEFAULT_CIPHERS, [{client2server,?CIPHERS}, {server2client,?CIPHERS}]).
+-define(DEFAULT_CIPHERS, (fun() -> Ciphs = filter_supported(cipher, ?CIPHERS),
+                                   [{client2server,Ciphs}, {server2client,Ciphs}]
+                          end)()
+        ).
+
 
 -define(v(Key, Config), proplists:get_value(Key, Config)).
 -define(v(Key, Config, Default), proplists:get_value(Key, Config, Default)).
diff --git a/lib/ssh/test/ssh_trpt_test_lib.erl b/lib/ssh/test/ssh_trpt_test_lib.erl
index 8de550af15..f2c9892f95 100644
--- a/lib/ssh/test/ssh_trpt_test_lib.erl
+++ b/lib/ssh/test/ssh_trpt_test_lib.erl
@@ -41,15 +41,20 @@
 	  opts = [],
 	  timeout = 5000,			% ms
 	  seen_hello = false,
-	  enc = <<>>,
 	  ssh = #ssh{},				% #ssh{}
 	  alg_neg = {undefined,undefined},      % {own_kexinit, peer_kexinit}
 	  alg,                                  % #alg{}
 	  vars = dict:new(),
 	  reply = [],				% Some repy msgs are generated hidden in ssh_transport :[
 	  prints = [],
-	  return_value
-	 }).
+	  return_value,
+
+          %% Packet retrival and decryption
+          decrypted_data_buffer     = <<>>,
+          encrypted_data_buffer     = <<>>,
+          aead_data                 = <<>>,
+          undecrypted_packet_length
+         }).
 
 -define(role(S), ((S#s.ssh)#ssh.role) ).
 
@@ -475,11 +480,11 @@ recv(S0 = #s{}) ->
 
 %%%================================================================
 try_find_crlf(Seen, S0) ->
-    case erlang:decode_packet(line,S0#s.enc,[]) of
+    case erlang:decode_packet(line,S0#s.encrypted_data_buffer,[]) of
 	{more,_} ->
-	    Line = <<Seen/binary,(S0#s.enc)/binary>>,
+	    Line = <<Seen/binary,(S0#s.encrypted_data_buffer)/binary>>,
 	    S0#s{seen_hello = {more,Line},
-		 enc = <<>>,	       % didn't find a complete line 
+		 encrypted_data_buffer = <<>>,	       % didn't find a complete line 
 				       % -> no more characters to test
 		 return_value = {more,Line}
 	       };
@@ -490,13 +495,13 @@ try_find_crlf(Seen, S0) ->
 		    S = opt(print_messages, S0, 
 			    fun(X) when X==true;X==detail -> {"Recv info~n~p~n",[Line]} end),
 		    S#s{seen_hello = false,
-			enc = Rest,
+			encrypted_data_buffer = Rest,
 			return_value = {info,Line}};
 		S1=#s{} ->
 		    S = opt(print_messages, S1,
 			fun(X) when X==true;X==detail -> {"Recv hello~n~p~n",[Line]} end),
 		    S#s{seen_hello = true,
-			enc = Rest,
+			encrypted_data_buffer = Rest,
 			return_value = {hello,Line}}
 	    end
     end.
@@ -511,19 +516,73 @@ handle_hello(Bin, S=#s{ssh=C}) ->
 	{{Vp,Vs}, server} ->   S#s{ssh = C#ssh{c_vsn=Vp, c_version=Vs}}
     end.
 
-receive_binary_msg(S0=#s{ssh=C0=#ssh{decrypt_block_size = BlockSize,
+receive_binary_msg(S0=#s{}) ->
+     case ssh_transport:handle_packet_part(
+           S0#s.decrypted_data_buffer,
+           S0#s.encrypted_data_buffer,
+           S0#s.aead_data,
+           S0#s.undecrypted_packet_length,
+           S0#s.ssh)
+     of
+         {packet_decrypted, DecryptedBytes, EncryptedDataRest, Ssh1} ->
+             S1 = S0#s{ssh = Ssh1#ssh{recv_sequence = ssh_transport:next_seqnum(Ssh1#ssh.recv_sequence)},
+                       decrypted_data_buffer = <<>>,
+                       undecrypted_packet_length = undefined,
+                       aead_data = <<>>,
+                       encrypted_data_buffer = EncryptedDataRest},
+             case
+                 catch ssh_message:decode(set_prefix_if_trouble(DecryptedBytes,S1))
+             of
+                 {'EXIT',_} -> fail(decode_failed,S1);
+
+                 Msg ->
+                     Ssh2 = case Msg of
+                              #ssh_msg_kexinit{} ->
+                                  ssh_transport:key_init(opposite_role(Ssh1), Ssh1, DecryptedBytes);
+                              _ ->
+                                  Ssh1
+			 end,
+                     S2 = opt(print_messages, S1,
+                              fun(X) when X==true;X==detail -> {"Recv~n~s~n",[format_msg(Msg)]} end),
+                     S3 = opt(print_messages, S2, 
+                              fun(detail) -> {"decrypted bytes ~p~n",[DecryptedBytes]} end),
+                     S3#s{ssh = inc_recv_seq_num(Ssh2),
+                          return_value = Msg
+                         }
+             end;
+
+         {get_more, DecryptedBytes, EncryptedDataRest, AeadData, TotalNeeded, Ssh1} ->
+             %% Here we know that there are not enough bytes in
+             %% EncryptedDataRest to use. We must wait for more.
+             Remaining = case TotalNeeded of
+                             undefined -> 8;
+                             _ -> TotalNeeded - size(DecryptedBytes) - size(EncryptedDataRest)
+                         end,
+             receive_binary_msg(
+               receive_wait(Remaining,
+                            S0#s{encrypted_data_buffer = EncryptedDataRest,
+                                 decrypted_data_buffer = DecryptedBytes,
+                                 undecrypted_packet_length = TotalNeeded,
+                                 aead_data = AeadData,
+                                 ssh = Ssh1}
+                           ))
+     end.
+
+
+
+old_receive_binary_msg(S0=#s{ssh=C0=#ssh{decrypt_block_size = BlockSize,
 				     recv_mac_size = MacSize
 				    }
 			}) ->
-    case size(S0#s.enc) >= max(8,BlockSize) of
+    case size(S0#s.encrypted_data_buffer) >= max(8,BlockSize) of
 	false ->
 	    %% Need more bytes to decode the packet_length field
-	    Remaining = max(8,BlockSize) - size(S0#s.enc),
+	    Remaining = max(8,BlockSize) - size(S0#s.encrypted_data_buffer),
 	    receive_binary_msg( receive_wait(Remaining, S0) );
 	true ->
 	    %% Has enough bytes to decode the packet_length field
 	    {_, <<?UINT32(PacketLen), _/binary>>, _} =
-		ssh_transport:decrypt_blocks(S0#s.enc, BlockSize, C0), % FIXME: BlockSize should be at least 4
+		ssh_transport:decrypt_blocks(S0#s.encrypted_data_buffer, BlockSize, C0), % FIXME: BlockSize should be at least 4
 
 	    %% FIXME: Check that ((4+PacketLen) rem BlockSize) == 0 ?
 
@@ -534,19 +593,19 @@ receive_binary_msg(S0=#s{ssh=C0=#ssh{decrypt_block_size = BlockSize,
 		     ((4+PacketLen) rem BlockSize) =/= 0 ->
 			 fail(bad_packet_length_modulo, S0); % FIXME: disconnect
 
-		     size(S0#s.enc) >= (4 + PacketLen + MacSize) ->
+		     size(S0#s.encrypted_data_buffer) >= (4 + PacketLen + MacSize) ->
 			 %% has the whole packet
 			 S0;
 
 		     true ->
 			 %% need more bytes to get have the whole packet
-			 Remaining = (4 + PacketLen + MacSize) - size(S0#s.enc),
+			 Remaining = (4 + PacketLen + MacSize) - size(S0#s.encrypted_data_buffer),
 			 receive_wait(Remaining, S0)
 		 end,
 
 	    %% Decrypt all, including the packet_length part (re-use the initial #ssh{})
 	    {C1, SshPacket = <<?UINT32(_),?BYTE(PadLen),Tail/binary>>, EncRest} = 
-		ssh_transport:decrypt_blocks(S1#s.enc, PacketLen+4, C0),
+		ssh_transport:decrypt_blocks(S1#s.encrypted_data_buffer, PacketLen+4, C0),
 	    
 	    PayloadLen = PacketLen - 1 - PadLen,
 	    <<CompressedPayload:PayloadLen/binary, _Padding:PadLen/binary>> = Tail,
@@ -573,7 +632,7 @@ receive_binary_msg(S0=#s{ssh=C0=#ssh{decrypt_block_size = BlockSize,
 		    S3 = opt(print_messages, S2, 
 			     fun(detail) -> {"decrypted bytes ~p~n",[SshPacket]} end),
 		    S3#s{ssh = inc_recv_seq_num(C3),
-			 enc = Rest,
+			 encrypted_data_buffer = Rest,
 			 return_value = Msg
 			}
 	    end
@@ -602,7 +661,7 @@ receive_poll(S=#s{socket=Sock}) ->
     inet:setopts(Sock, [{active,once}]),
     receive
 	{tcp,Sock,Data} ->
-	    receive_poll( S#s{enc = <<(S#s.enc)/binary,Data/binary>>} );
+	    receive_poll( S#s{encrypted_data_buffer = <<(S#s.encrypted_data_buffer)/binary,Data/binary>>} );
 	{tcp_closed,Sock} ->
 	    throw({tcp,tcp_closed});
 	{tcp_error, Sock, Reason} ->
@@ -616,7 +675,7 @@ receive_wait(S=#s{socket=Sock,
     inet:setopts(Sock, [{active,once}]),
     receive
 	{tcp,Sock,Data} ->
-	    S#s{enc = <<(S#s.enc)/binary,Data/binary>>};
+	    S#s{encrypted_data_buffer = <<(S#s.encrypted_data_buffer)/binary,Data/binary>>};
 	{tcp_closed,Sock} ->
 	    throw({tcp,tcp_closed});
 	{tcp_error, Sock, Reason} ->
@@ -627,11 +686,11 @@ receive_wait(S=#s{socket=Sock,
 
 receive_wait(N, S=#s{socket=Sock,
 		     timeout=Timeout,
-		     enc=Enc0}) when N>0 ->
+		     encrypted_data_buffer=Enc0}) when N>0 ->
     inet:setopts(Sock, [{active,once}]),
     receive
 	{tcp,Sock,Data} ->
-	    receive_wait(N-size(Data), S#s{enc = <<Enc0/binary,Data/binary>>});
+	    receive_wait(N-size(Data), S#s{encrypted_data_buffer = <<Enc0/binary,Data/binary>>});
 	{tcp_closed,Sock} ->
 	    throw({tcp,tcp_closed});
 	{tcp_error, Sock, Reason} ->
diff --git a/lib/ssh/vsn.mk b/lib/ssh/vsn.mk
index 3ba1e177be..0f9eee887c 100644
--- a/lib/ssh/vsn.mk
+++ b/lib/ssh/vsn.mk
@@ -1,4 +1,4 @@
 #-*-makefile-*-   ; force emacs to enter makefile-mode
 
-SSH_VSN = 4.7.2
+SSH_VSN = 4.7.4
 APP_VSN    = "ssh-$(SSH_VSN)"
diff --git a/lib/ssl/doc/specs/.gitignore b/lib/ssl/doc/specs/.gitignore
new file mode 100644
index 0000000000..322eebcb06
--- /dev/null
+++ b/lib/ssl/doc/specs/.gitignore
@@ -0,0 +1 @@
+specs_*.xml
diff --git a/lib/ssl/doc/src/Makefile b/lib/ssl/doc/src/Makefile
index c72b6d6cc4..064131944c 100644
--- a/lib/ssl/doc/src/Makefile
+++ b/lib/ssl/doc/src/Makefile
@@ -47,6 +47,7 @@ XML_CHAPTER_FILES = \
 	ssl_protocol.xml \
 	using_ssl.xml \
 	ssl_distribution.xml \
+	standards_compliance.xml \
 	notes.xml
 
 BOOK_FILES = book.xml
@@ -80,11 +81,16 @@ HTML_REF_MAN_FILE = $(HTMLDIR)/index.html
 
 TOP_PDF_FILE = $(PDFDIR)/$(APPLICATION)-$(VSN).pdf
 
+SPECS_FILES = $(XML_REF3_FILES:%.xml=$(SPECDIR)/specs_%.xml)
+
+TOP_SPECS_FILE = specs.xml
+
 # ----------------------------------------------------
 # FLAGS
 # ----------------------------------------------------
 XML_FLAGS +=
 DVIPS_FLAGS +=
+SPECS_FLAGS = -I../../../public_key/include -I../../../public_key/src -I../../..
 
 # ----------------------------------------------------
 # Targets
@@ -92,7 +98,7 @@ DVIPS_FLAGS +=
 $(HTMLDIR)/%.gif: %.gif
 	$(INSTALL_DATA) $< $@
 
-docs: pdf html man
+docs: html pdf man
 
 $(TOP_PDF_FILE): $(XML_FILES)
 
@@ -105,6 +111,7 @@ clean clean_docs:
 	rm -rf $(XMLDIR)
 	rm -f $(MAN3DIR)/*
 	rm -f $(TOP_PDF_FILE) $(TOP_PDF_FILE:%.pdf=%.fo)
+	rm -f $(SPECS_FILES)
 	rm -f errs core *~
 
 man: $(MAN3_FILES) $(MAN6_FILES)
diff --git a/lib/ssl/doc/src/notes.xml b/lib/ssl/doc/src/notes.xml
index 48372babf8..a511cb4db3 100644
--- a/lib/ssl/doc/src/notes.xml
+++ b/lib/ssl/doc/src/notes.xml
@@ -27,6 +27,169 @@
   </header>
   <p>This document describes the changes made to the SSL application.</p>
 
+<section><title>SSL 9.2.1</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    The timeout for a passive receive was sometimes not
+	    cancelled and later caused a server crash. This bug has
+	    now been corrected.</p>
+          <p>
+	    Own Id: OTP-14701 Aux Id: ERL-883, ERL-884 </p>
+        </item>
+        <item>
+          <p>
+	    Add tag for passive message (active N) in cb_info to
+	    retain transport transparency.</p>
+          <p>
+	    Own Id: OTP-15679 Aux Id: ERL-861 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>SSL 9.2</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Fix bug that an incorrect return value for gen_statem
+	    could be created when alert was a result of handling
+	    renegotiation info extension</p>
+          <p>
+	    Own Id: OTP-15502</p>
+        </item>
+        <item>
+          <p>
+	    Correct check for 3des_ede_cbc, could cause ssl to claim
+	    to support 3des_ede_cbc when cryptolib does not.</p>
+          <p>
+	    Own Id: OTP-15539</p>
+        </item>
+        <item>
+          <p>
+	    Improved DTLS error handling, avoids unexpected
+	    connection failure in rare cases.</p>
+          <p>
+	    Own Id: OTP-15561</p>
+        </item>
+        <item>
+          <p>
+	    Corrected active once emulation bug that could cause the
+	    ssl_closed meassage to not be sent. Bug introduced by
+	    OTP-15449</p>
+          <p>
+	    Own Id: OTP-15666 Aux Id: ERIERL-316, </p>
+        </item>
+      </list>
+    </section>
+
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+          <p>
+	    Add client option {reuse_session, SessionID::binary()}
+	    that can be used together with new option value
+	    {reuse_sessions, save}. This makes it possible to reuse a
+	    session from a specific connection establishment.</p>
+          <p>
+	    Own Id: OTP-15369</p>
+        </item>
+        <item>
+          <p>
+	    The Reason part of of the error return from the functions
+	    connect and handshake has a better and documented format.
+	    This will sometimes differ from previous returned
+	    reasons, however those where only documented as term()
+	    and should for that reason not be relied on.</p>
+          <p>
+	    *** POTENTIAL INCOMPATIBILITY ***</p>
+          <p>
+	    Own Id: OTP-15423</p>
+        </item>
+        <item>
+          <p>
+	    Refactor of state handling to improve TLS application
+	    data throughput and reduce CPU overhead</p>
+          <p>
+	    Own Id: OTP-15445</p>
+        </item>
+        <item>
+          <p>
+	    The SSL code has been optimized in many small ways to
+	    reduce CPU load for encryption/decryption, especially for
+	    Erlang's distribution protocol over TLS.</p>
+          <p>
+	    Own Id: OTP-15529</p>
+        </item>
+        <item>
+          <p>
+	    Add support for active N</p>
+          <p>
+	    Own Id: OTP-15665 Aux Id: ERL-811, PR-2072 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>SSL 9.1.2</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Fix encoding of the SRP extension length field in ssl.
+	    The old encoding of the SRP extension length could cause
+	    interoperability problems with third party SSL
+	    implementations when SRP was used.</p>
+          <p>
+	    Own Id: OTP-15477 Aux Id: ERL-790 </p>
+        </item>
+        <item>
+          <p>
+	    Guarantee active once data delivery, handling TCP stream
+	    properly.</p>
+          <p>
+	    Own Id: OTP-15504 Aux Id: ERL-371 </p>
+        </item>
+        <item>
+          <p>
+	    Correct gen_statem returns for some error cases</p>
+          <p>
+	    Own Id: OTP-15505</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>SSL 9.1.1</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Fixed renegotiation bug. Client did not handle server
+	    initiated renegotiation correctly after rewrite to two
+	    connection processes, due to ERL-622 commit
+	    d87ac1c55188f5ba5cdf72384125d94d42118c18. This could
+	    manifest it self as a " bad_record_mac" alert.</p>
+          <p>
+	    Also included are some optimizations</p>
+          <p>
+	    Own Id: OTP-15489 Aux Id: ERL-308 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>SSL 9.1</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
@@ -663,7 +826,7 @@
           <p>
 	    TLS sessions must be registered with SNI if provided, so
 	    that sessions where client hostname verification would
-	    fail can not connect reusing a session created when the
+	    fail cannot connect reusing a session created when the
 	    server name verification succeeded.</p>
           <p>
 	    Own Id: OTP-14632</p>
@@ -841,7 +1004,7 @@
 	    public_key:pkix_verify_hostname/2 to verify the hostname
 	    of the connection with the server certificates specified
 	    hostname during certificate path validation. The user may
-	    explicitly disables it. Also if the hostname can not be
+	    explicitly disables it. Also if the hostname cannot be
 	    derived from the first argument to connect or is not
 	    supplied by the server name indication option, the check
 	    will not be performed.</p>
diff --git a/lib/ssl/doc/src/specs.xml b/lib/ssl/doc/src/specs.xml
new file mode 100644
index 0000000000..50e9428fec
--- /dev/null
+++ b/lib/ssl/doc/src/specs.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<specs xmlns:xi="http://www.w3.org/2001/XInclude">
+  <xi:include href="../specs/specs_ssl_crl_cache_api.xml"/>
+  <xi:include href="../specs/specs_ssl_crl_cache.xml"/>
+  <xi:include href="../specs/specs_ssl_session_cache_api.xml"/>
+  <xi:include href="../specs/specs_ssl.xml"/>
+</specs>
+
+ 
diff --git a/lib/ssl/doc/src/ssl.xml b/lib/ssl/doc/src/ssl.xml
index 3029977745..74a0a0a03e 100644
--- a/lib/ssl/doc/src/ssl.xml
+++ b/lib/ssl/doc/src/ssl.xml
@@ -28,7 +28,7 @@
     <rev></rev>
     <file>ssl.xml</file>
   </header>
-  <module>ssl</module>
+  <module since="">ssl</module>
   <modulesummary>Interface Functions for Secure Socket Layer</modulesummary>
   <description>
     <p>
@@ -37,277 +37,374 @@
       <seealso marker="ssl_app">ssl(6)</seealso>.
     </p>
   </description>
-    
-  <section>
-    <title>DATA TYPES</title>
-    <p>The following data types are used in the functions for SSL/TLS/DTLS:</p>
-
-    <taglist>
-
-      <tag><c>boolean() =</c></tag>
-      <item><p><c>true | false</c></p></item>
-
-      <tag><c>option() =</c></tag>
-      <item><p><c>socketoption() | ssl_option() | transport_option()</c></p>
-      </item>
-
-      <tag><c>socketoption() =</c></tag>
-      <item><p><c>proplists:property()</c></p>
-      <p>The default socket options are
-      <c>[{mode,list},{packet, 0},{header, 0},{active, true}]</c>.</p>
-      <p>For valid options, see the
-      <seealso marker="kernel:inet">inet(3)</seealso>,
-      <seealso marker="kernel:gen_tcp">gen_tcp(3)</seealso> and
-      <seealso marker="kernel:gen_tcp">gen_udp(3)</seealso> 
-      manual pages
-      in Kernel. Note that stream oriented options such as packet are only relevant for SSL/TLS and not DTLS</p></item>
-
-      <tag><marker id="type-ssloption"/><c>ssl_option() =</c></tag>
-      <item>
-	<p><c>{verify, verify_type()}</c></p>
-	<p><c>| {verify_fun, {fun(), term()}}</c></p>
-	<p><c>| {fail_if_no_peer_cert, boolean()}</c></p>
-	<p><c>| {depth, integer()}</c></p>
-	<p><c>| {cert, public_key:der_encoded()}</c></p>
-	<p><c>| {certfile, path()}</c></p>
-	<p><c>| {key, {'RSAPrivateKey'| 'DSAPrivateKey' | 'ECPrivateKey' 
-	| 'PrivateKeyInfo', public_key:der_encoded()} |
-	#{algorithm := rsa | dss | ecdsa,
-	engine := crypto:engine_ref(), key_id := crypto:key_id(), password => crypto:password()}</c></p>
-	<p><c>| {keyfile, path()}</c></p>
-	<p><c>| {password, string()}</c></p>
-	<p><c>| {cacerts, [public_key:der_encoded()]}</c></p>
-	<p><c>| {cacertfile, path()}</c></p>
-	<p><c>| {dh, public_key:der_encoded()}</c></p>
-	<p><c>| {dhfile, path()}</c></p>
-	<p><c>| {ciphers, ciphers()}</c></p>
-	<p><c>| {user_lookup_fun, {fun(), term()}}, {psk_identity, string()},
-	{srp_identity, {string(), string()}}</c></p>
-	<p><c>| {reuse_sessions, boolean()}</c></p>
-	<p><c>| {reuse_session, fun()} {next_protocols_advertised, [binary()]}</c></p>
-	<p><c>| {client_preferred_next_protocols, {client | server,
-	[binary()]} | {client | server, [binary()], binary()}}</c></p>
-	<p><c>| {log_alert, boolean()}</c></p>
-	<p><c>| {server_name_indication, hostname() | disable}</c></p>
-	<p><c>| {customize_hostname_check, list()}</c></p>
-	<p><c>| {sni_hosts, [{hostname(), [ssl_option()]}]}</c></p>
-	<p><c>| {sni_fun, SNIfun::fun()}</c></p>
-      </item>
-      
-      <tag><c>transport_option() =</c></tag>
-      <item><p><c>{cb_info, {CallbackModule::atom(), DataTag::atom(),
-
-      ClosedTag::atom(), ErrTag:atom()}}</c></p>
-      <p>Defaults to <c>{gen_tcp, tcp, tcp_closed, tcp_error}</c> for TLS
-      and <c>{gen_udp, udp, udp_closed, udp_error}</c> for DTLS. Can be used
-      to customize the transport layer. For TLS the callback module must implement a
-      reliable transport protocol, behave as <c>gen_tcp</c>, and have functions
-      corresponding to <c>inet:setopts/2</c>, <c>inet:getopts/2</c>,
-      <c>inet:peername/1</c>, <c>inet:sockname/1</c>, and <c>inet:port/1</c>.
-      The callback <c>gen_tcp</c> is treated specially and calls <c>inet</c>
-      directly. For DTLS this feature must be considered exprimental.</p>
-      <taglist>
-	<tag><c>CallbackModule =</c></tag>
-	<item><p><c>atom()</c></p></item>
-	<tag><c>DataTag =</c></tag>
-	<item><p><c>atom()</c></p>
-	<p>Used in socket data message.</p></item>
-	<tag><c>ClosedTag =</c></tag>
-	<item><p><c>atom()</c></p>
-	<p>Used in socket close message.</p></item>
-      </taglist>
-      </item>
-
-      <tag><c>verify_type() =</c></tag>
-      <item><p><c>verify_none | verify_peer</c></p></item>
-
-      <tag><c>path() =</c></tag>
-      <item><p><c>string()</c></p>
-      <p>Represents a file path.</p></item>
 
-      <tag><c>public_key:der_encoded() =</c></tag>
-      <item><p><c>binary()</c></p>
-      <p>ASN.1 DER-encoded entity as an Erlang binary.</p></item>
+  <!--
+      ================================================================
+      =  Data types                                                  =
+      ================================================================
+  -->
 
-      <tag><c>host() =</c></tag>
-      <item><p><c>hostname() | ipaddress()</c></p></item>
+  <datatypes>
+    <datatype_title>Types used in SSL/TLS/DTLS</datatype_title>
 
-      <tag><c>hostname() =</c></tag>
-      <item><p><c>string() - DNS hostname</c></p></item>
-
-      <tag><c>ip_address() =</c></tag>
-      <item><p><c>{N1,N2,N3,N4} % IPv4 | {K1,K2,K3,K4,K5,K6,K7,K8} % IPv6
-      </c></p></item>
+    
+    <datatype>
+      <name name="socket"/>
+    </datatype>
+    
+    <datatype>
+      <name name="sslsocket"/>
+      <desc>
+	<p>An opaque reference to the TLS/DTLS connection, may be used for equality matching.</p>
+	</desc>
+    </datatype>
+
+    <datatype>
+      <name name="tls_option"/>
+    </datatype>
+        
+    <datatype>
+      <name name="tls_client_option"/>
+    </datatype>
+    
+    <datatype>
+      <name name="tls_server_option"/>
+    </datatype>
+   
+    
+    <datatype>
+      <name name="socket_option"/>
+      <desc>
+	<p>The default socket options are
+	<c>[{mode,list},{packet, 0},{header, 0},{active, true}]</c>.</p>
+	<p>For valid options, see the
+	<seealso marker="kernel:inet">inet(3)</seealso>,
+	<seealso marker="kernel:gen_tcp">gen_tcp(3)</seealso> and
+	<seealso marker="kernel:gen_tcp">gen_udp(3)</seealso> 
+	manual pages in Kernel. Note that stream oriented options such as packet
+	are only relevant for SSL/TLS and not DTLS</p>
+      </desc>
+    </datatype>
 
-      <tag><c>sslsocket() =</c></tag>
-      <item><p>opaque()</p></item>
-      
-      <tag><marker id="type-protocol"/><c> protocol_version() =</c></tag>
-      <item><p><c> ssl_tls_protocol() |  dtls_protocol() </c></p></item>
-      
-      <item><p><c>sslv3 | tlsv1 | 'tlsv1.1' | 'tlsv1.2'</c></p></item>
-
-      <tag><marker id="type-protocol"/><c> dtls_protocol() =</c></tag>
-      <item><p><c>'dtlsv1' | 'dtlsv1.2'</c></p></item>
-
-      <tag><c>ciphers() =</c></tag>
-      <item><p><c>= [ciphersuite()]</c></p>
-      <p>Tuples and string formats accepted by versions
-      before ssl-8.2.4 will be converted for backwards compatibility</p></item>
-
-      <tag><c>ciphersuite() =</c></tag>
-      <item><p><c>
-      #{key_exchange := key_exchange(),
-        cipher := cipher(),
-        mac := MAC::hash() | aead,
-        prf := PRF::hash() | default_prf} </c></p></item>
-
-      <tag><c>key_exchange()=</c></tag>
-      <item><p><c>rsa | dhe_dss | dhe_rsa | dh_anon | psk | dhe_psk
-      | rsa_psk | srp_anon | srp_dss | srp_rsa | ecdh_anon | ecdh_ecdsa
-      | ecdhe_ecdsa | ecdh_rsa | ecdhe_rsa</c></p></item>
-
-      <tag><c>cipher() =</c></tag>
-      <item><p><c>rc4_128 | des_cbc | '3des_ede_cbc'
-      | aes_128_cbc | aes_256_cbc | aes_128_gcm | aes_256_gcm | chacha20_poly1305</c></p></item>
-
-      <tag><c>hash() =</c></tag>
-      <item><p><c>md5 | sha | sha224 | sha256 | sha348 | sha512</c></p></item>
-
-      <tag><c>prf_random() =</c></tag>
-      <item><p><c>client_random | server_random</c></p></item>
-
-      <tag><c>cipher_filters() =</c></tag>
-      <item><p><c> [{key_exchange | cipher | mac | prf, algo_filter()}])</c></p></item>
-
-      <tag><c>algo_filter() =</c></tag>
-      <item><p>fun(key_exchange() | cipher() | hash() | aead | default_prf) -> true | false </p></item>
-
-      <tag><c>srp_param_type() =</c></tag>
-      <item><p><c>srp_1024 | srp_1536 | srp_2048 | srp_3072
-      | srp_4096 | srp_6144 | srp_8192</c></p></item>
-
-      <tag><c>SNIfun::fun()</c></tag>
-      <item><p><c>= fun(ServerName :: string()) -> [ssl_option()]</c></p></item>
-
-      <tag><c>named_curve() =</c></tag>
-      <item><p><c>sect571r1 | sect571k1 | secp521r1 | brainpoolP512r1
-       | sect409k1 | sect409r1 | brainpoolP384r1 | secp384r1
-       | sect283k1 | sect283r1 | brainpoolP256r1 | secp256k1 | secp256r1
-       | sect239k1 | sect233k1 | sect233r1 | secp224k1 | secp224r1
-       | sect193r1 | sect193r2 | secp192k1 | secp192r1 | sect163k1
-       | sect163r1 | sect163r2 | secp160k1 | secp160r1 | secp160r2</c></p></item>
-
-       <tag><c>hello_extensions() =</c></tag>
-       <item><p><c>#{renegotiation_info => binary() | undefined,
-                   signature_algs => [{hash(), ecsda| rsa| dsa}] | undefined
-		   alpn => binary() | undefined,
-		   next_protocol_negotiation => binary() | undefined,
-		   srp => string() | undefined,
-		   ec_point_formats => list() | undefined,
-		   elliptic_curves => [oid] | undefined,
-		   sni => string() | undefined}
-       }</c></p></item>
+    <datatype>
+      <name name="active_msgs"/>
+      <desc>
+      <p>When a TLS/DTLS socket is in active mode (the default), data from the
+      socket is delivered to the owner of the socket in the form of
+      messages as described above.</p>
+      <p>The <c>ssl_passive</c> message is sent only when the socket is in
+      <c>{active, N}</c> mode and the counter dropped to 0. It indicates
+      that the socket has transitioned to passive (<c>{active, false}</c>) mode.</p>
+      </desc>
+    </datatype>
       
+    <datatype>
+      <name name="transport_option"/>
+      <desc>
+	<p>Defaults to <c>{gen_tcp, tcp, tcp_closed, tcp_error,
+	tcp_passive}</c> for TLS (for backward compatibility a four
+	tuple will be converted to a five tuple with the last element
+	"second_element"_passive) and <c>{gen_udp, udp, udp_closed,
+	udp_error}</c> for DTLS (might also be changed to five tuple in
+	the future). Can be used to customize the transport layer. The
+	tag values should be the values used by the underlying
+	transport in its active mode messages. For TLS the callback
+	module must implement a reliable transport protocol, behave as
+	<c>gen_tcp</c>, and have functions corresponding to
+	<c>inet:setopts/2</c>, <c>inet:getopts/2</c>,
+	<c>inet:peername/1</c>, <c>inet:sockname/1</c>, and
+	<c>inet:port/1</c>.  The callback <c>gen_tcp</c> is treated
+	specially and calls <c>inet</c> directly. For DTLS this
+	feature must be considered exprimental.
+	</p>
+      </desc>
+    </datatype>
+  
+     <datatype>
+      <name name="host"/>
+     </datatype>
+
+     <datatype>
+      <name name="hostname"/>
+     </datatype>
+
+       <datatype>
+      <name name="ip_address"/>
+     </datatype>
+
+     <datatype>
+       <name name="protocol_version"/>
+     </datatype>
+
+       <datatype>
+       <name name="tls_version"/>
+     </datatype>
+     
+     <datatype>
+       <name name="dtls_version"/>
+     </datatype>
+     
+     <datatype>
+       <name name="tls_legacy_version"/>
+     </datatype>
+
+     <datatype>
+       <name name="dtls_legacy_version"/>
+     </datatype>
+     
+     
+       <datatype>
+       <name name="prf_random"/>
+     </datatype>
+     
+      <datatype>
+       <name name="verify_type"/>
+     </datatype>
+       
+     <datatype>
+       <name name="ciphers"/>
+     </datatype>
+     
+      <datatype>
+       <name name="erl_cipher_suite"/>
+     </datatype>
+     
+     <datatype>
+       <name name="cipher"/>
+     </datatype>
+    
+     <datatype>
+       <name name="legacy_cipher"/>
+     </datatype>
+    
+     <datatype>
+       <name name="cipher_filters"/>
+     </datatype>
+ 
+       <datatype>
+       <name name="hash"/>
+     </datatype>
+
+     <datatype>
+       <name name="sha2"/>
+     </datatype>
+
+     <datatype>
+       <name name="legacy_hash"/>
+     </datatype>
+
+    <datatype>
+       <name name="old_cipher_suite"/>
+     </datatype>
+     
+     <datatype>
+      <name name="signature_algs"/>
+     </datatype>
+
+     <datatype>
+      <name name="sign_algo"/>
+     </datatype>
+     
+     <datatype>
+       <name name="sign_scheme"/>
+     </datatype>
+     
+     <datatype>
+      <name name="kex_algo"/>
+     </datatype>
+
+     <datatype>
+      <name name="algo_filter"/>
+     </datatype>
+
+     <datatype>
+      <name name="eccs"/>
+     </datatype>
+
+     <datatype>
+      <name name="named_curve"/>
+     </datatype>
+
+     <datatype>
+       <name name="psk_identity"/>
+     </datatype>
+
+     <datatype>
+       <name name="srp_identity"/>
+     </datatype>
+
+     <datatype>
+      <name name="srp_param_type"/>
+     </datatype>
+     
+     <datatype>
+       <name name="app_level_protocol"/>
+     </datatype>
+
+     <datatype>
+      <name name="protocol_extensions"/>
+     </datatype>
+
+     <datatype>
+      <name name="error_alert"/>
+     </datatype>
+
+     <datatype>
+      <name name="tls_alert"/>
+     </datatype>
+
+    <datatype_title>TLS/DTLS OPTION DESCRIPTIONS - COMMON for SERVER and CLIENT</datatype_title>
+    
+    <datatype>
+      <name name="common_option"/>
+    </datatype>
+    
+    <datatype>
+      <name since="OTP 20" name="protocol"/>
+      <desc>
+	<p>Choose TLS or DTLS protocol for the transport layer security.
+	Defaults to <c>tls</c>. For DTLS other transports than UDP are not yet supported.</p>
+      </desc>
+    </datatype>
+    
+    <datatype>
+      <name name="handshake_completion"/>
+      <desc>
+	<p>Defaults to <c>full</c>. If hello is specified the handshake will
+	pause after the hello message and give the user a possibility make decisions
+	based on hello extensions before continuing or aborting the handshake by calling
+	<seealso marker="#handshake_continue-3"> handshake_continue/3</seealso> or
+	<seealso marker="#handshake_cancel-1"> handshake_cancel/1</seealso></p>
+      </desc>
+    </datatype>
+    
+    <datatype>
+      <name name="cert"/>
+      <desc>
+	<p>The DER-encoded users certificate. If this option
+	is supplied, it overrides option <c>certfile</c>.</p>
+      </desc>
+    </datatype>
+    
+    <datatype>
+      <name name="cert_pem"/>
+      <desc>
+	<p>Path to a file containing the user certificate on PEM format.</p>
+      </desc>
+    </datatype>
+    
+    <datatype>
+      <name name="key"/>
+      <desc>
+	<p>The DER-encoded user's private key or a map refering to a crypto
+	engine and its key reference that optionally can be password protected,
+	seealso <seealso marker="crypto:crypto#engine_load-4"> crypto:engine_load/4
+	</seealso> and  <seealso marker="crypto:engine_load"> Crypto's Users Guide</seealso>. If this option 
+	is supplied, it overrides option <c>keyfile</c>.</p>
+      </desc>
+    </datatype>
+    
+     <datatype>
+       <name name="key_pem"/>
+       <desc>
+	<p>Path to the file containing the user's
+	private PEM-encoded key. As PEM-files can contain several
+	entries, this option defaults to the same file as given by
+	option <c>certfile</c>.</p>
+       </desc>
+     </datatype>
+     
+    <datatype>
+      <name name="key_password"/>
+      <desc>
+	<p>String containing the user's password. Only used if the 
+	private keyfile is password-protected.</p>
+      </desc>
+    </datatype>
+    
+    <datatype>
+      <name name="cipher_suites"/>
+      <desc>
+	<p>Supported cipher suites. The function
+	<c>cipher_suites/2</c> can be used to find all ciphers that
+	are supported by default. <c>cipher_suites(all, 'tlsv1.2')</c> can be
+	called to find all available cipher suites. Pre-Shared Key
+	(<url href="http://www.ietf.org/rfc/rfc4279.txt">RFC
+	4279</url> and <url
+	href="http://www.ietf.org/rfc/rfc5487.txt">RFC 5487</url>),
+	Secure Remote Password (<url
+	href="http://www.ietf.org/rfc/rfc5054.txt">RFC 5054</url>),
+	RC4, 3DES, DES cipher suites, and anonymous cipher suites only work if
+	explicitly enabled by this option; they are supported/enabled
+	by the peer also.  Anonymous cipher suites are supported for
+	testing purposes only and are not be used when security
+	matters.</p>
+      </desc>
+    </datatype>
+    
+    <datatype>
+      <name name="eccs"/>
+      <desc><p> Allows to specify the order of preference for named curves
+      and to restrict their usage when using a cipher suite supporting them.</p>
+      </desc>
+    </datatype>
 
-    </taglist>
-  </section>
-
-  <section>
-    <title>TLS/DTLS OPTION DESCRIPTIONS - COMMON for SERVER and CLIENT</title>
-
-    <p>The following options have the same meaning in the client and 
-    the server:</p>
+    <datatype>
+      <name name="signature_schemes"/>
+      <desc>
+	  <p>
+	    In addition to the signature_algorithms extension from TLS 1.2,
+	    <url href="http://www.ietf.org/rfc/rfc8446.txt#section-4.2.3">TLS 1.3
+	    (RFC 5246 Section 4.2.3)</url>adds the signature_algorithms_cert extension
+	    which enables having special requirements on the signatures used in the
+	    certificates that differs from the requirements on digital signatures as a whole.
+	    If this is not required this extension is not needed.
+	  </p>
+	  <p>
+	    The client will send a signature_algorithms_cert extension (ClientHello),
+	    if TLS version 1.3 or later is used, and the signature_algs_cert option is
+	    explicitly specified. By default, only the signature_algs extension is sent.
+	  </p>
+	  <p>
+	    The signature schemes shall be ordered according to the client's preference
+	    (favorite choice first).
+	  </p>
+      </desc>
+     </datatype>
+     
+    <datatype>
+      <name name="secure_renegotiation"/>
+      <desc><p>Specifies if to reject renegotiation attempt that does
+      not live up to <url
+      href="http://www.ietf.org/rfc/rfc5746.txt">RFC 5746</url>.  By
+      default <c>secure_renegotiate</c> is set to <c>true</c>, that
+      is, secure renegotiation is enforced. If set to <c>false</c>
+      secure renegotiation will still be used if possible, but it
+      falls back to insecure renegotiation if the peer does not
+      support <url href="http://www.ietf.org/rfc/rfc5746.txt">RFC
+      5746</url>.</p>
+      </desc>
+    </datatype>
     
-    <taglist>
-
-      <tag><c>{protocol, tls | dtls}</c></tag>
-      <item><p>Choose TLS or DTLS protocol for the transport layer security.
-      Defaults to <c>tls</c> Introduced in OTP 20, DTLS support is considered
-      experimental in this release. Other transports than UDP are not yet supported.</p></item>
-
-      <tag><c>{handshake, hello | full}</c></tag>
-      <item><p> Defaults to <c>full</c>. If hello is specified the handshake will
-      pause after the hello message and give the user a possibility make decisions
-      based on hello extensions before continuing or aborting the handshake by calling
-      <seealso marker="#handshake_continue-3"> handshake_continue/3</seealso> or
-      <seealso marker="#handshake_cancel-1"> handshake_cancel/1</seealso>
-      </p></item>
-      
-      <tag><c>{cert, public_key:der_encoded()}</c></tag>
-      <item><p>The DER-encoded users certificate. If this option
-      is supplied, it overrides option <c>certfile</c>.</p></item>
-      
-      <tag><c>{certfile, path()}</c></tag>
-      <item><p>Path to a file containing the user certificate.</p></item>
-      
-      <tag>
-	<marker id="key_option_def"/>
-	<c>{key, {'RSAPrivateKey'| 'DSAPrivateKey' | 'ECPrivateKey'
-      |'PrivateKeyInfo', public_key:der_encoded()} |  #{algorithm := rsa | dss | ecdsa,
-	engine := crypto:engine_ref(), key_id :=  crypto:key_id(), password => crypto:password()}</c></tag>
-      <item><p>The DER-encoded user's private key or a map refering to a crypto
-      engine and its key reference that optionally can be password protected,
-      seealso <seealso marker="crypto:crypto#engine_load-4"> crypto:engine_load/4
-      </seealso> and  <seealso marker="crypto:engine_load"> Crypto's Users Guide</seealso>. If this option 
-      is supplied, it overrides option <c>keyfile</c>.</p></item>
-      
-      <tag><c>{keyfile, path()}</c></tag>
-      <item><p>Path to the file containing the user's
-      private PEM-encoded key. As PEM-files can contain several
-      entries, this option defaults to the same file as given by
-      option <c>certfile</c>.</p></item>
-
-      <tag><c>{password, string()}</c></tag>
-      <item><p>String containing the user's password. Only used if the 
-      private keyfile is password-protected.</p></item>
-
-      <tag><c>{ciphers, ciphers()}</c></tag>
-      <item><p>Supported cipher suites. The function
-      <c>cipher_suites/0</c> can be used to find all ciphers that are
-      supported by default. <c>cipher_suites(all)</c> can be called
-      to find all available cipher suites. Pre-Shared Key 
-      (<url href="http://www.ietf.org/rfc/rfc4279.txt">RFC 4279</url> and
-      <url href="http://www.ietf.org/rfc/rfc5487.txt">RFC 5487</url>), 
-      Secure Remote Password 
-      (<url href="http://www.ietf.org/rfc/rfc5054.txt">RFC 5054</url>), RC4 cipher suites,
-      and anonymous cipher suites only work if explicitly enabled by
-      this option; they are supported/enabled by the peer also.
-      Anonymous cipher suites are supported for testing purposes
-      only and are not be used when security matters.</p></item>
-
-      <tag><c>{eccs, [named_curve()]}</c></tag>
-      <item><p> Allows to specify the order of preference for named curves
-      and to restrict their usage when using a cipher suite supporting them.
-      </p></item>
-
-      <tag><c>{secure_renegotiate, boolean()}</c></tag>
-      <item><p>Specifies if to reject renegotiation attempt that does
-      not live up to 
-      <url href="http://www.ietf.org/rfc/rfc5746.txt">RFC 5746</url>. 
-      By default <c>secure_renegotiate</c> is set to <c>true</c>, 
-      that is, secure renegotiation is enforced. If set to <c>false</c> secure renegotiation
-      will still be used if possible,
-      but it falls back to insecure renegotiation if the peer
-      does not support 
-      <url href="http://www.ietf.org/rfc/rfc5746.txt">RFC 5746</url>.</p>
-      </item>
-
-      <tag><c>{depth, integer()}</c></tag>
-      <item><p>Maximum number of non-self-issued
+    <datatype>
+      <name name="allowed_cert_chain_length"/>
+      <desc><p>Maximum number of non-self-issued
       intermediate certificates that can follow the peer certificate 
       in a valid certification path. So, if depth is 0 the PEER must 
       be signed by the trusted ROOT-CA directly; if 1 the path can 
       be PEER, CA, ROOT-CA; if 2 the path can be PEER, CA, CA, 
-      ROOT-CA, and so on. The default value is 1.</p></item>
-
-      <tag><marker id="verify_fun"/><c>{verify_fun, {Verifyfun :: fun(), InitialUserState ::
-      term()}}</c></tag>
-      <item><p>The verification fun is to be defined as follows:</p>
+      ROOT-CA, and so on. The default value is 1.</p>
+      </desc>
+    </datatype>
+    
+    <datatype>
+      <name name="custom_verify"/>
+      <desc>
+	<p>The verification fun is to be defined as follows:</p>
 
 	<code>
-fun(OtpCert :: #'OTPCertificate'{}, Event :: {bad_cert, Reason :: atom() | {revoked,
-atom()}} |
+fun(OtpCert :: #'OTPCertificate'{}, Event :: {bad_cert, Reason :: atom() |
+             {revoked, atom()}} |
 	     {extension, #'Extension'{}}, InitialUserState :: term()) ->
 	{valid, UserState :: term()} | {valid_peer, UserState :: term()} |
 	{fail, Reason :: term()} | {unknown, UserState :: term()}.
@@ -315,20 +412,21 @@ atom()}} |
 
 	<p>The verification fun is called during the X509-path
 	validation when an error or an extension unknown to the SSL
-	application is encountered. It is also called
-	when a certificate is considered valid by the path validation
-	to allow access to each certificate in the path to the user
-	application. It differentiates between the peer
-	certificate and the CA certificates by using <c>valid_peer</c> or
-	<c>valid</c> as second argument to the verification fun. See the
-	<seealso marker="public_key:public_key_records">public_key User's
-	Guide</seealso> for definition of <c>#'OTPCertificate'{}</c> and
-	<c>#'Extension'{}</c>.</p>
+	application is encountered. It is also called when a
+	certificate is considered valid by the path validation to
+	allow access to each certificate in the path to the user
+	application. It differentiates between the peer certificate
+	and the CA certificates by using <c>valid_peer</c> or
+	<c>valid</c> as second argument to the verification fun. See
+	the <seealso marker="public_key:public_key_records">public_key
+	User's Guide</seealso> for definition of
+	<c>#'OTPCertificate'{}</c> and <c>#'Extension'{}</c>.</p>
 
 	<list type="bulleted">
-	  <item><p>If the verify callback fun returns <c>{fail, Reason}</c>,
-	  the verification process is immediately stopped, an alert is
-	  sent to the peer, and the TLS/DTLS handshake terminates.</p></item>
+	  <item><p>If the verify callback fun returns <c>{fail,
+	  Reason}</c>, the verification process is immediately
+	  stopped, an alert is sent to the peer, and the TLS/DTLS
+	  handshake terminates.</p></item>
 	  <item><p>If the verify callback fun returns <c>{valid, UserState}</c>,
 	  the verification process continues.</p></item> 
 	  <item><p>If the verify callback fun always returns
@@ -378,10 +476,12 @@ atom()}} |
 
       <taglist>
 	<tag><c>unknown_ca</c></tag>
-	<item><p>No trusted CA was found in the trusted store. The trusted CA is
-	normally a so called ROOT CA, which is a self-signed certificate. Trust can
-	be claimed for an intermediate CA (trusted anchor does not have to be
-	self-signed according to X-509) by using option <c>partial_chain</c>.</p>
+	<item><p>No trusted CA was found in the trusted store. The
+	trusted CA is normally a so called ROOT CA, which is a
+	self-signed certificate. Trust can be claimed for an
+	intermediate CA (trusted anchor does not have to be
+	self-signed according to X-509) by using option
+	<c>partial_chain</c>.</p>
 	</item>
 
 	<tag><c>selfsigned_peer</c></tag>
@@ -392,15 +492,17 @@ atom()}} |
 marker="public_key:public_key#pkix_path_validation-3">public_key:pkix_path_validation/3</seealso>
 	</p></item>
       </taglist>
-      </item>
-
-      <tag><c>{crl_check, boolean() | peer | best_effort }</c></tag>
-      <item>
+      </desc>
+    </datatype>
+    
+    <datatype>
+      <name name="crl_check"/>
+      <desc>
 	<p>Perform CRL (Certificate Revocation List) verification
 	<seealso marker="public_key:public_key#pkix_crls_validate-3">
-	(public_key:pkix_crls_validate/3)</seealso> on all the certificates during the path validation
-	<seealso
-	    marker="public_key:public_key#pkix_path_validation-3">(public_key:pkix_path_validation/3)
+	(public_key:pkix_crls_validate/3)</seealso> on all the
+	certificates during the path validation <seealso
+	marker="public_key:public_key#pkix_path_validation-3">(public_key:pkix_path_validation/3)
 	</seealso>
 	of the certificate chain. Defaults to <c>false</c>.</p>
 	
@@ -409,115 +511,114 @@ marker="public_key:public_key#pkix_path_validation-3">public_key:pkix_path_valid
 	  <item>check is only performed on the peer certificate.</item>
 
 	  <tag><c>best_effort</c></tag>
-	  <item>if certificate revocation status can not be determined
+	  <item>if certificate revocation status cannot be determined
 	  it will be accepted as valid.</item>
 	</taglist>
-
+	
 	<p>The CA certificates specified for the connection will be used to 
 	construct the certificate chain validating the CRLs.</p>
  	
 	<p>The CRLs will be fetched from a local or external cache. See
 	<seealso marker="ssl:ssl_crl_cache_api">ssl_crl_cache_api(3)</seealso>.</p>
-      </item>
-
-      <tag><c>{crl_cache, {Module :: atom(), {DbHandle :: internal | term(), Args :: list()}}}</c></tag>
-      <item>
-	<p>Specify how to perform lookup and caching of certificate revocation lists.
-	<c>Module</c> defaults to <seealso marker="ssl:ssl_crl_cache">ssl_crl_cache</seealso>
-	with <c> DbHandle </c> being <c>internal</c> and an
-	empty argument list.</p>
-
-	<p>There are two implementations available:</p>
-
-	<taglist>
-	  <tag><c>ssl_crl_cache</c></tag>
-	  <item>
-	    <p>This module maintains a cache of CRLs.  CRLs can be
-	    added to the cache using the function <seealso
-	    marker="ssl:ssl_crl_cache#insert-1">ssl_crl_cache:insert/1</seealso>,
-	    and optionally automatically fetched through HTTP if the
-	    following argument is specified:</p>
-
-	    <taglist>
-	      <tag><c>{http, timeout()}</c></tag>
-	      <item><p>
-		Enables fetching of CRLs specified as http URIs in<seealso
-		marker="public_key:public_key_records">X509 certificate extensions</seealso>.
-		Requires the OTP inets application.</p>
-	      </item>
-	    </taglist>
-	  </item>
-
-	  <tag><c>ssl_crl_hash_dir</c></tag>
-	  <item>
-	    <p>This module makes use of a directory where CRLs are
-	    stored in files named by the hash of the issuer name.</p>
-
-	    <p>The file names consist of eight hexadecimal digits
-	    followed by <c>.rN</c>, where <c>N</c> is an integer,
-	    e.g. <c>1a2b3c4d.r0</c>.  For the first version of the
-	    CRL, <c>N</c> starts at zero, and for each new version,
-	    <c>N</c> is incremented by one.  The OpenSSL utility
-	    <c>c_rehash</c> creates symlinks according to this
-	    pattern.</p>
-
-	    <p>For a given hash value, this module finds all
-	    consecutive <c>.r*</c> files starting from zero, and those
-	    files taken together make up the revocation list.  CRL
-	    files whose <c>nextUpdate</c> fields are in the past, or
-	    that are issued by a different CA that happens to have the
-	    same name hash, are excluded.</p>
-
-	    <p>The following argument is required:</p>
-
-	    <taglist>
-	      <tag><c>{dir, string()}</c></tag>
-	      <item><p>Specifies the directory in which the CRLs can be found.</p></item>
-	    </taglist>
-
-	  </item>
-
-	  <tag><c>max_handshake_size</c></tag>
-	  <item>
-	    <p>Integer (24 bits unsigned). Used to limit the size of
-	    valid TLS handshake packets to avoid DoS attacks.
-	    Defaults to 256*1024.</p>
-          </item>
-          
-	</taglist>
-
-      </item>
+      </desc>
+    </datatype>
 
-      <tag><c>{partial_chain, fun(Chain::[DerCert]) -> {trusted_ca, DerCert} |
-      unknown_ca }</c></tag>
-      <item><p>Claim an intermediate CA in the chain as trusted. TLS then
-      performs <seealso
-      marker="public_key:public_key#pkix_path_validation-3">public_key:pkix_path_validation/3</seealso>
-      with the selected CA as trusted anchor and the rest of the chain.</p></item>
+    <datatype>
+      <name name="crl_cache_opts"/>
+      <desc>
+    	<p>Specify how to perform lookup and caching of certificate revocation lists.
+    	<c>Module</c> defaults to <seealso marker="ssl:ssl_crl_cache">ssl_crl_cache</seealso>
+    	with <c> DbHandle </c> being <c>internal</c> and an
+    	empty argument list.</p>
+	
+    	<p>There are two implementations available:</p>
+	
+    	<taglist>
+    	  <tag><c>ssl_crl_cache</c></tag>
+    	  <item>
+    	    <p>This module maintains a cache of CRLs.  CRLs can be
+    	    added to the cache using the function <seealso
+    	    marker="ssl:ssl_crl_cache#insert-1">ssl_crl_cache:insert/1</seealso>,
+    	    and optionally automatically fetched through HTTP if the
+    	    following argument is specified:</p>
+	    
+    	    <taglist>
+    	      <tag><c>{http, timeout()}</c></tag>
+    	      <item><p>
+    		Enables fetching of CRLs specified as http URIs in<seealso
+    		marker="public_key:public_key_records">X509 certificate extensions</seealso>.
+    		Requires the OTP inets application.</p>
+    	      </item>
+    	    </taglist>
+    	  </item>
+	  
+    	  <tag><c>ssl_crl_hash_dir</c></tag>
+    	  <item>
+    	    <p>This module makes use of a directory where CRLs are
+    	    stored in files named by the hash of the issuer name.</p>
+
+    	    <p>The file names consist of eight hexadecimal digits
+    	    followed by <c>.rN</c>, where <c>N</c> is an integer,
+    	    e.g. <c>1a2b3c4d.r0</c>.  For the first version of the
+    	    CRL, <c>N</c> starts at zero, and for each new version,
+    	    <c>N</c> is incremented by one.  The OpenSSL utility
+    	    <c>c_rehash</c> creates symlinks according to this
+    	    pattern.</p>
+
+    	    <p>For a given hash value, this module finds all
+    	    consecutive <c>.r*</c> files starting from zero, and those
+    	    files taken together make up the revocation list.  CRL
+    	    files whose <c>nextUpdate</c> fields are in the past, or
+    	    that are issued by a different CA that happens to have the
+    	    same name hash, are excluded.</p>
+	    
+    	    <p>The following argument is required:</p>
+
+    	    <taglist>
+    	      <tag><c>{dir, string()}</c></tag>
+    	      <item><p>Specifies the directory in which the CRLs can be found.</p></item>
+    	    </taglist>
+    	  </item>
+	  </taglist>
+	</desc>
+    </datatype>
+
+    <datatype>
+      <name name="root_fun"/>
+      <desc>
+	<code>
+fun(Chain::[public_key:der_encoded()]) ->
+	{trusted_ca, DerCert::public_key:der_encoded()} | unknown_ca}
+	</code>
+	<p>Claim an intermediate CA in the chain as trusted. TLS then
+	performs <seealso
+	marker="public_key:public_key#pkix_path_validation-3">public_key:pkix_path_validation/3</seealso>
+	with the selected CA as trusted anchor and the rest of the chain.</p>
+      </desc>
+    </datatype>
 
-      <tag><c>{versions, [protocol_version()]}</c></tag>
 
-      <item><p>TLS protocol versions supported by started clients and servers.
+    <datatype>
+      <name name="protocol_versions"/>
+      <desc><p>TLS protocol versions supported by started clients and servers.
       This option overrides the application environment option
       <c>protocol_version</c> and  <c>dtls_protocol_version</c>. If the environment option is not set, it defaults
       to all versions, except SSL-3.0, supported by the SSL application.
-      See also <seealso marker="ssl:ssl_app">ssl(6).</seealso></p></item>
+      See also <seealso marker="ssl:ssl_app">ssl(6).</seealso></p>
+      </desc>
+    </datatype>
 
-      <tag><c>{hibernate_after, integer()|undefined}</c></tag>
-      <item><p>When an integer-value is specified, <c>TLS/DTLS-connection</c>
-      goes into hibernation after the specified number of milliseconds
-      of inactivity, thus reducing its memory footprint. When
-      <c>undefined</c> is specified (this is the default), the process
-      never goes into hibernation.</p></item>
 
-      <tag><c>{user_lookup_fun, {Lookupfun :: fun(), UserState :: term()}}</c></tag>
-      <item><p>The lookup fun is to defined as follows:</p>
+      <datatype>
+      <name name="custom_user_lookup"/>
+      <desc><p>The lookup fun is to defined as follows:</p>
 
 	<code>
 fun(psk, PSKIdentity ::string(), UserState :: term()) ->
 	{ok, SharedSecret :: binary()} | error;
 fun(srp, Username :: string(), UserState :: term()) ->
-	{ok, {SRPParams :: srp_param_type(), Salt :: binary(), DerivedKey :: binary()}} | error.
+	{ok, {SRPParams :: srp_param_type(), Salt :: binary(),
+	      DerivedKey :: binary()}} | error.
 	</code>
 
 	<p>For Pre-Shared Key (PSK) cipher suites, the lookup fun is
@@ -533,20 +634,63 @@ fun(srp, Username :: string(), UserState :: term()) ->
 	<url href="http://tools.ietf.org/html/rfc5054#section-2.4"> RFC 5054</url>:
 	<c>crypto:sha([Salt, crypto:sha([Username, &lt;&lt;$:&gt;&gt;, Password])])</c>
 	</p>
-      </item>
+      </desc>
+    </datatype>
 
-      <tag><c>{padding_check, boolean()}</c></tag>
-      <item><p>Affects TLS-1.0 connections only.
+    <datatype>
+      <name name="session_id"/>
+      <desc>
+	<p>Identifies a TLS session.</p>
+      </desc>
+    </datatype>
+    
+    <datatype>    
+      <name name="log_alert"/> 
+      <desc><p>If set to <c>false</c>, error reports are not displayed.
+      Deprecated in OTP 22, use {log_level, <seealso marker="#type-logging_level">logging_level()</seealso>} instead.</p> 
+      </desc> 
+    </datatype> 
+
+    <datatype>    
+      <name name="logging_level"/> 
+      <desc><p>Specifies the log level for TLS/DTLS. At verbosity level <c>notice</c> and above error reports are
+      displayed in TLS/DTLS. The level <c>debug</c> triggers verbose logging of TLS/DTLS protocol
+      messages.</p>
+      </desc> 
+    </datatype> 
+    
+    <datatype>    
+    <name name="hibernate_after"/> 
+    <desc><p>When an integer-value is specified, <c>TLS/DTLS-connection</c> 
+    goes into hibernation after the specified number of milliseconds 
+    of inactivity, thus reducing its memory footprint. When
+    <c>undefined</c> is specified (this is the default), the process 
+    never goes into hibernation.</p> 
+    </desc> 
+    </datatype> 
+
+    <datatype>
+      <name name="handshake_size"/>
+      <desc>
+    	<p>Integer (24 bits unsigned). Used to limit the size of
+    	valid TLS handshake packets to avoid DoS attacks.
+    	Defaults to 256*1024.</p>
+      </desc>
+    </datatype>
+    
+    <datatype>
+      <name name="padding_check"/>
+      <desc><p>Affects TLS-1.0 connections only.
       If set to <c>false</c>, it disables the block cipher padding check
       to be able to interoperate with legacy software.</p>
       <warning><p>Using <c>{padding_check, boolean()}</c> makes TLS
 	vulnerable to the Poodle attack.</p></warning>
-      </item>
-
-      
+      </desc>
+    </datatype>
 
-      <tag><c>{beast_mitigation, one_n_minus_one | zero_n | disabled}</c></tag>
-      <item><p>Affects SSL-3.0 and TLS-1.0 connections only. Used to change the BEAST
+    <datatype>
+      <name name="beast_mitigation"/>
+      <desc><p>Affects SSL-3.0 and TLS-1.0 connections only. Used to change the BEAST
        mitigation strategy to interoperate with legacy software.
        Defaults to <c>one_n_minus_one</c>.</p>
 
@@ -556,127 +700,170 @@ fun(srp, Username :: string(), UserState :: term()) ->
 
       <p><c>disabled</c> - Disable BEAST mitigation.</p>
 
-      <warning><p>Using <c>{beast_mitigation, disabled}</c> makes SSL or TLS
+      <warning><p>Using <c>{beast_mitigation, disabled}</c> makes SSL-3.0 or TLS-1.0
         vulnerable to the BEAST attack.</p></warning>
-      </item>
-      </taglist>
-
-  </section>
-  
-  <section>
-    <title>TLS/DTLS OPTION DESCRIPTIONS - CLIENT SIDE</title>
-
-    <p>The following options are client-specific or have a slightly different
-    meaning in the client than in the server:</p>
-
-    <taglist>
+      </desc>
+    </datatype>
+    
+    <datatype>
+      <name name="ssl_imp"/>
+        <desc><p>Deprecated since OTP-17, has no affect.</p></desc>
+    </datatype>
+    
+    <datatype_title>TLS/DTLS OPTION DESCRIPTIONS - CLIENT</datatype_title>
+    
+    <datatype>
+      <name name="client_option"/>
+    </datatype>
+   
+     <datatype>
+      <name name="client_verify_type"/>
+      <desc><p>In mode <c>verify_none</c> the default behavior is to allow
+      all x509-path validation errors. See also option  <seealso marker="#type-custom_verify">verify_fun</seealso>.</p>
+      </desc>
+    </datatype>
 
-      <tag><c>{verify, verify_type()}</c></tag>
-      <item><p>In mode <c>verify_none</c> the default behavior is to allow
-      all x509-path validation errors. See also option <c>verify_fun</c>.</p>
-      </item>
+    <datatype>
+      <name name="client_reuse_session"/>
+      <desc>
+	<p>Reuses a specific session earlier saved with the option
+	<c>{reuse_sessions, save} since OTP-21.3 </c>
+      </p>
+      </desc>
+    </datatype>
 
-      <tag><c>{reuse_sessions, boolean()}</c></tag>
-      <item><p>Specifies if the client is to try to reuse sessions
-      when possible.</p></item>
+    <datatype>
+      <name name="client_reuse_sessions"/>
+      <desc>
+	<p>When <c>save</c> is specified a new connection will be negotiated
+      and saved for later reuse. The session ID can be fetched with 
+      <seealso marker="#connection_information-2">connection_information/2</seealso>
+      and used with the client option <seealso marker="#type-client_reuse_session">reuse_session</seealso>
+      The boolean value true specifies that if possible, automatized session reuse will
+      be performed. If a new session is created, and is unique in regard 
+      to previous stored sessions, it will be saved for possible later reuse. Since OTP-21.3</p>
+      </desc>
+    </datatype>
 
-      <tag><c>{cacerts, [public_key:der_encoded()]}</c></tag>
-      <item><p>The DER-encoded trusted certificates. If this option
-      is supplied it overrides option <c>cacertfile</c>.</p></item>
-      
-      <tag><c>{cacertfile, path()}</c></tag>
-      <item><p>Path to a file containing PEM-encoded CA certificates. The CA
+    <datatype>
+      <name name="client_cacerts"/>
+      <desc>
+	<p>The DER-encoded trusted certificates. If this option
+      is supplied it overrides option <c>cacertfile</c>.</p>
+      </desc>
+    </datatype>
+    
+    <datatype>
+      <name name="client_cafile"/>
+      <desc>
+	<p>Path to a file containing PEM-encoded CA certificates. The CA
       certificates are used during server authentication and when building the
       client certificate chain.</p>
-    </item>
-
-      <tag><c>{alpn_advertised_protocols, [binary()]}</c></tag>
-      <item>
-      <p>The list of protocols supported by the client to be sent to the
-      server to be used for an Application-Layer Protocol Negotiation (ALPN).
-      If the server supports ALPN then it will choose a protocol from this
-      list; otherwise it will fail the connection with a "no_application_protocol"
-      alert. A server that does not support ALPN will ignore this value.</p>
-
-      <p>The list of protocols must not contain an empty binary.</p>
-
-      <p>The negotiated protocol can be retrieved using the <c>negotiated_protocol/1</c> function.</p>
-      </item>
-
-      <tag><c>{client_preferred_next_protocols, {Precedence :: server | client, ClientPrefs :: [binary()]}}</c><br/>
-      <c>{client_preferred_next_protocols, {Precedence :: server | client, ClientPrefs :: [binary()], Default :: binary()}}</c></tag>
-	   <item>
-	   <p>Indicates that the client is to try to perform Next Protocol
-	   Negotiation.</p>
-
-	   <p>If precedence is server, the negotiated protocol is the
-	   first protocol to be shown on the server advertised list, which is
-	   also on the client preference list.</p>
-
-	   <p>If precedence is client, the negotiated protocol is the
-	   first protocol to be shown on the client preference list, which is
-	   also on the server advertised list.</p>
-
-	   <p>If the client does not support any of the server advertised
-	   protocols or the server does not advertise any protocols, the
-	   client falls back to the first protocol in its list or to the
-	   default protocol (if a default is supplied). If the
-	   server does not support Next Protocol Negotiation, the
-	   connection terminates if no default protocol is supplied.</p>
-	   </item>
-
-      <tag><c>{psk_identity, string()}</c></tag>
-      <item><p>Specifies the identity the client presents to the server.
-      The matching secret is found by calling <c>user_lookup_fun</c>.</p>
-      </item>
-
-      <tag><c>{srp_identity, {Username :: string(), Password :: string()}
-      </c></tag>
-      <item><p>Specifies the username and password to use to authenticate
-      to the server.</p></item>
-
-      <tag><c>{server_name_indication, HostName :: hostname()}</c></tag>
-      <item><p>Specify the hostname to be used in TLS Server Name Indication extension.
-      If not specified it will default to the <c>Host</c> argument of <seealso marker="#connect-3">connect/[3,4]</seealso>
-      unless it is of type inet:ipaddress().</p>
-      <p>
-	The <c>HostName</c> will also be used in the hostname verification of the peer certificate using
-	<seealso marker="public_key:public_key#pkix_verify_hostname-2">public_key:pkix_verify_hostname/2</seealso>.
-      </p>
-      </item>
-      <tag><c>{server_name_indication, disable}</c></tag>
-	<item>
-          <p> Prevents the Server Name Indication extension from being sent and
-	  disables the hostname verification check
-	  <seealso marker="public_key:public_key#pkix_verify_hostname-2">public_key:pkix_verify_hostname/2</seealso> </p>
-	</item>
-
-	<tag><c>{customize_hostname_check, Options::list()}</c></tag>
-	<item>
-          <p> Customizes the hostname verification of the peer certificate, as different protocols that use
+      </desc>
+    </datatype>
+    
+    <datatype>
+      <name name="client_alpn"/>
+      <desc>
+	<p>The list of protocols supported by the client to be sent to the
+	server to be used for an Application-Layer Protocol Negotiation (ALPN).
+	If the server supports ALPN then it will choose a protocol from this
+	list; otherwise it will fail the connection with a "no_application_protocol"
+	alert. A server that does not support ALPN will ignore this value.</p>
+	
+	<p>The list of protocols must not contain an empty binary.</p>
+	
+	<p>The negotiated protocol can be retrieved using the <c>negotiated_protocol/1</c> function.</p>
+      </desc>
+    </datatype>
+    
+   <datatype>
+      <name name="client_preferred_next_protocols"/>
+      <desc>
+	<p>Indicates that the client is to try to perform Next Protocol
+	Negotiation.</p>
+	
+	<p>If precedence is server, the negotiated protocol is the
+	first protocol to be shown on the server advertised list, which is
+	also on the client preference list.</p>
+	
+	<p>If precedence is client, the negotiated protocol is the
+	first protocol to be shown on the client preference list, which is
+	also on the server advertised list.</p>
+	
+	<p>If the client does not support any of the server advertised
+	protocols or the server does not advertise any protocols, the
+	client falls back to the first protocol in its list or to the
+	default protocol (if a default is supplied). If the
+	server does not support Next Protocol Negotiation, the
+	connection terminates if no default protocol is supplied.</p>
+      </desc>
+   </datatype>
+   
+   <datatype>
+      <name name="client_psk_identity"/>
+      <desc>
+	<p>Specifies the identity the client presents to the server.
+	The matching secret is found by calling <c>user_lookup_fun</c></p>
+      </desc>
+      </datatype>
+
+      <datatype>
+	<name name="client_srp_identity"/>
+	<desc>
+	  <p>Specifies the username and password to use to authenticate
+	  to the server.</p>
+	</desc>
+      </datatype>
+
+      <datatype>
+      <name name="sni"/>
+      <desc>
+	<p>Specify the hostname to be used in TLS Server Name Indication extension.
+	If not specified it will default to the <c>Host</c> argument of <seealso marker="#connect-3">connect/[3,4]</seealso>
+	unless it is of type inet:ipaddress().</p>
+	<p>
+	  The <c>HostName</c> will also be used in the hostname verification of the peer certificate using
+	  <seealso marker="public_key:public_key#pkix_verify_hostname-2">public_key:pkix_verify_hostname/2</seealso>.
+	</p>
+	<p> The special value <c>disable</c> prevents the Server Name Indication extension from being sent and
+	disables the hostname verification check
+	<seealso marker="public_key:public_key#pkix_verify_hostname-2">public_key:pkix_verify_hostname/2</seealso> </p>
+      </desc>
+      </datatype>
+         
+      <datatype>
+	<name name="customize_hostname_check"/>
+	<desc>
+	  <p> Customizes the hostname verification of the peer certificate, as different protocols that use
 	  TLS such as HTTP or LDAP may want to do it differently, for possible options see
 	  <seealso marker="public_key:public_key#pkix_verify_hostname-3">public_key:pkix_verify_hostname/3</seealso> </p>
-	</item>
-
-      <tag><c>{fallback, boolean()}</c></tag>
-      <item>
-	<p> Send special cipher suite TLS_FALLBACK_SCSV to avoid undesired TLS version downgrade.
-	Defaults to false</p>
-	<warning><p>Note this option is not needed in normal TLS usage and should not be used
-	to implement new clients. But legacy clients that retries connections in the following manner</p>
-
-	<p><c> ssl:connect(Host, Port, [...{versions, ['tlsv2', 'tlsv1.1', 'tlsv1', 'sslv3']}])</c></p>
-	<p><c>  ssl:connect(Host, Port, [...{versions, [tlsv1.1', 'tlsv1', 'sslv3']}, {fallback, true}])</c></p>
-	<p><c>  ssl:connect(Host, Port, [...{versions, ['tlsv1', 'sslv3']}, {fallback, true}]) </c></p>
-	<p><c>  ssl:connect(Host, Port, [...{versions, ['sslv3']}, {fallback, true}]) </c></p>
-	 
-	 <p>may use it to avoid undesired TLS version downgrade. Note that TLS_FALLBACK_SCSV must also
-	 be supported by the server for the prevention to work.
-	</p></warning>
-      </item>
-      <tag><marker id="client_signature_algs"/><c>{signature_algs, [{hash(), ecdsa | rsa | dsa}]}</c></tag>
-	<item>
-	<p>In addition to the algorithms negotiated by the cipher
+	</desc>
+      </datatype>
+      
+      <datatype>
+	<name name="fallback"/>
+	<desc>
+	  <p> Send special cipher suite TLS_FALLBACK_SCSV to avoid undesired TLS version downgrade.
+	  Defaults to false</p>
+	  <warning><p>Note this option is not needed in normal TLS usage and should not be used
+	  to implement new clients. But legacy clients that retries connections in the following manner</p>
+	  
+	  <p><c> ssl:connect(Host, Port, [...{versions, ['tlsv2', 'tlsv1.1', 'tlsv1', 'sslv3']}])</c></p>
+	  <p><c>  ssl:connect(Host, Port, [...{versions, [tlsv1.1', 'tlsv1', 'sslv3']}, {fallback, true}])</c></p>
+	  <p><c>  ssl:connect(Host, Port, [...{versions, ['tlsv1', 'sslv3']}, {fallback, true}]) </c></p>
+	  <p><c>  ssl:connect(Host, Port, [...{versions, ['sslv3']}, {fallback, true}]) </c></p>
+	  
+	  <p>may use it to avoid undesired TLS version downgrade. Note that TLS_FALLBACK_SCSV must also
+	  be supported by the server for the prevention to work.
+	  </p></warning>
+	</desc>
+      </datatype>
+      
+      <datatype>
+	<name name="client_signature_algs"/>
+	<desc>
+	  <p>In addition to the algorithms negotiated by the cipher
 	suite used for key exchange, payload encryption, message
 	authentication and pseudo random calculation, the TLS signature
 	algorithm extension <url
@@ -707,177 +894,227 @@ fun(srp, Username :: string(), UserState :: term()) ->
 	Selected signature algorithm can restrict which hash functions
 	that may be selected. Default support for {md5, rsa} removed in ssl-8.0
 	</p>
-	</item>
-      </taglist>
-   </section>
-   
-  <section>
-    <title>TLS/DTLS OPTION DESCRIPTIONS - SERVER SIDE</title>
-
-    <p>The following options are server-specific or have a slightly different
-    meaning in the server than in the client:</p>
-
-    <taglist>
-
-      <tag><c>{cacerts, [public_key:der_encoded()]}</c></tag>
-      <item><p>The DER-encoded trusted certificates. If this option
-      is supplied it overrides option <c>cacertfile</c>.</p></item>
+	</desc>
+      </datatype>
       
-      <tag><c>{cacertfile, path()}</c></tag>
-      <item><p>Path to a file containing PEM-encoded CA
-      certificates. The CA certificates are used to build the server
-      certificate chain and for client authentication. The CAs are
-      also used in the list of acceptable client CAs passed to the
-      client when a certificate is requested. Can be omitted if there
-      is no need to verify the client and if there are no
-      intermediate CAs for the server certificate.</p></item>
-  
-      <tag><c>{dh, public_key:der_encoded()}</c></tag>
-      <item><p>The DER-encoded Diffie-Hellman parameters. If specified,
-      it overrides option <c>dhfile</c>.</p></item>
-
-      <tag><c>{dhfile, path()}</c></tag>
-      <item><p>Path to a file containing PEM-encoded Diffie Hellman parameters
-      to be used by the server if a cipher suite using Diffie Hellman key
-      exchange is negotiated. If not specified, default parameters are used.
-      </p></item>
-
-      <tag><c>{verify, verify_type()}</c></tag>
-      <item><p>A server only does x509-path validation in mode <c>verify_peer</c>,
-      as it then sends a certificate request to the client
-      (this message is not sent if the verify option is <c>verify_none</c>).
-      You can then also want to specify option <c>fail_if_no_peer_cert</c>.
-      </p></item>
-
-      <tag><c>{fail_if_no_peer_cert, boolean()}</c></tag>
-      <item><p>Used together with <c>{verify, verify_peer}</c> by an TLS/DTLS server.
-      If set to <c>true</c>, the server fails if the client does not have
-      a certificate to send, that is, sends an empty certificate. If set to
-      <c>false</c>, it fails only if the client sends an invalid
-      certificate (an empty certificate is considered valid). Defaults to false.</p>
-      </item>
-
-      <tag><c>{reuse_sessions, boolean()}</c></tag>
-      <item><p>Specifies if the server is to agree to reuse sessions
-      when requested by the clients. See also option <c>reuse_session</c>.
-      </p></item>
-
-      <tag><c>{reuse_session, fun(SuggestedSessionId,
-      PeerCert, Compression, CipherSuite) -> boolean()}</c></tag>
-      <item><p>Enables the TLS/DTLS server to have a local policy
-      for deciding if a session is to be reused or not.
-      Meaningful only if <c>reuse_sessions</c> is set to <c>true</c>.
-      <c>SuggestedSessionId</c> is a <c>binary()</c>, <c>PeerCert</c> is
-      a DER-encoded certificate, <c>Compression</c> is an enumeration integer,
-      and <c>CipherSuite</c> is of type <c>ciphersuite()</c>.</p></item>
-
-      <tag><c>{alpn_preferred_protocols, [binary()]}</c></tag>
-      <item>
-      <p>Indicates the server will try to perform Application-Layer
-      Protocol Negotiation (ALPN).</p>
-
-      <p>The list of protocols is in order of preference. The protocol
-      negotiated will be the first in the list that matches one of the
-      protocols advertised by the client. If no protocol matches, the
-      server will fail the connection with a "no_application_protocol" alert.</p>
-
-      <p>The negotiated protocol can be retrieved using the <c>negotiated_protocol/1</c> function.</p>
-      </item>
-
-      <tag><c>{next_protocols_advertised, Protocols :: [binary()]}</c></tag>
-      <item><p>List of protocols to send to the client if the client indicates that
-      it supports the Next Protocol extension. The client can select a protocol
-      that is not on this list. The list of protocols must not contain an empty
-      binary. If the server negotiates a Next Protocol, it can be accessed
-      using the <c>negotiated_next_protocol/1</c> method.</p></item>
-
-      <tag><c>{psk_identity, string()}</c></tag>
-      <item><p>Specifies the server identity hint, which the server presents to
-      the client.</p></item>
-
-      <tag><c>{log_alert, boolean()}</c></tag>
-      <item><p>If set to <c>false</c>, error reports are not displayed.</p></item>
-
-      <tag><c>{honor_cipher_order, boolean()}</c></tag>
-      <item><p>If set to <c>true</c>, use the server preference for cipher
-      selection. If set to <c>false</c> (the default), use the client
-      preference.</p></item>
-
-      <tag><c>{sni_hosts, [{hostname(), [ssl_option()]}]}</c></tag>
-      <item><p>If the server receives a SNI (Server Name Indication) from the client
-      matching a host listed in the <c>sni_hosts</c> option, the specific options for
-      that host will override previously specified options.
-
-      The option <c>sni_fun</c>, and <c>sni_hosts</c> are mutually exclusive.</p></item>
-
-      <tag><c>{sni_fun, SNIfun::fun()}</c></tag>
-      <item><p>If the server receives a SNI (Server Name Indication) from the client,
-      the given function will be called to retrieve <c>[ssl_option()]</c> for the indicated server.
-      These options will be merged into predefined <c>[ssl_option()]</c>.
-
-      The function should be defined as:
-        <c>fun(ServerName :: string()) -> [ssl_option()]</c>
-      and can be specified as a fun or as named <c>fun module:function/1</c>
-
-      The option <c>sni_fun</c>, and <c>sni_hosts</c> are mutually exclusive.</p></item>
-
-      <tag><c>{client_renegotiation, boolean()}</c></tag>
-      <item>In protocols that support client-initiated renegotiation, the cost
-      of resources of such an operation is higher for the server than the
-      client. This can act as a vector for denial of service attacks. The SSL
-      application already takes measures to counter-act such attempts,
-      but client-initiated renegotiation can be strictly disabled by setting
-      this option to <c>false</c>. The default value is <c>true</c>.
-      Note that disabling renegotiation can result in long-lived connections
-      becoming unusable due to limits on the number of messages the underlying
-      cipher suite can encipher.
-      </item>
-
-      <tag><c>{honor_cipher_order, boolean()}</c></tag>
-      <item>If true, use the server's preference for cipher selection. If false
-      (the default), use the client's preference.
-      </item>
+      <datatype_title>TLS/DTLS OPTION DESCRIPTIONS - SERVER </datatype_title>
+
+
+      <datatype>
+	<name name="server_option"/>
+      </datatype>
+     
+      <datatype>
+	<name name="server_cacerts"/>
+	<desc><p>The DER-encoded trusted certificates. If this option
+      is supplied it overrides option <c>cacertfile</c>.</p>
+	</desc>
+      </datatype>
+            
+      <datatype>
+	<name name="server_cafile"/>
+	<desc><p>Path to a file containing PEM-encoded CA
+	certificates. The CA certificates are used to build the server
+	certificate chain and for client authentication. The CAs are
+	also used in the list of acceptable client CAs passed to the
+	client when a certificate is requested. Can be omitted if
+	there is no need to verify the client and if there are no
+	intermediate CAs for the server certificate.</p>
+	</desc>
+      </datatype>
+
+      <datatype>
+	<name name="dh_der"/>
+	<desc><p>The DER-encoded Diffie-Hellman parameters. If
+	specified, it overrides option <c>dhfile</c>.</p>
+	</desc>
+      </datatype>
+    
+      <datatype>
+	<name name="dh_file"/>
+	<desc><p>Path to a file containing PEM-encoded Diffie Hellman
+	parameters to be used by the server if a cipher suite using
+	Diffie Hellman key exchange is negotiated. If not specified,
+	default parameters are used.</p>
+	</desc>
+      </datatype>
+
+    <datatype>
+	<name name="server_verify_type"/>
+	<desc><p>A server only does x509-path validation in mode
+	<c>verify_peer</c>, as it then sends a certificate request to
+	the client (this message is not sent if the verify option is
+	<c>verify_none</c>).  You can then also want to specify option
+	<c>fail_if_no_peer_cert</c>. </p>
+	</desc>
+      </datatype>
+
+      <datatype>
+	<name name="fail_if_no_peer_cert"/>
+	<desc><p>Used together with <c>{verify, verify_peer}</c> by an
+	TLS/DTLS server.  If set to <c>true</c>, the server fails if
+	the client does not have a certificate to send, that is, sends
+	an empty certificate. If set to <c>false</c>, it fails only if
+	the client sends an invalid certificate (an empty certificate
+	is considered valid). Defaults to false.</p>
+	</desc>
+      </datatype>
       
-      <tag><c>{honor_ecc_order, boolean()}</c></tag>
-      <item>If true, use the server's preference for ECC curve selection. If false
-      (the default), use the client's preference.
-      </item>
-
-      <tag><c>{signature_algs, [{hash(), ecdsa | rsa | dsa}]}</c></tag>
-      <item><p> The algorithms specified by
-      this option will be the ones accepted by the server in a signature algorithm
-      negotiation, introduced in TLS-1.2. The algorithms will also be offered to the client if a
-      client certificate is requested. For more details see the <seealso marker="#client_signature_algs">corresponding client option</seealso>.
-      </p> </item>
-
-    </taglist>
-  </section>
-  
-  <section>
-    <title>General</title>
+      <datatype>
+	<name name="server_reuse_sessions"/>
+	<desc><p>The boolean value true specifies that the server will
+	agree to reuse sessions. Setting it to false will result in an empty
+	session table, that is no sessions will be reused. 
+	See also option <seealso marker="#type-server_reuse_session">reuse_session</seealso>
+      </p>
+	</desc>
+      </datatype>
       
-    <p>When an TLS/DTLS socket is in active mode (the default), data from the
-      socket is delivered to the owner of the socket in the form of
-      messages:</p>
+      <datatype>
+	<name name="server_reuse_session"/>
+	<desc><p>Enables the TLS/DTLS server to have a local policy
+	for deciding if a session is to be reused or not.  Meaningful
+	only if <c>reuse_sessions</c> is set to <c>true</c>.
+	<c>SuggestedSessionId</c> is a <c>binary()</c>,
+	<c>PeerCert</c> is a DER-encoded certificate,
+	<c>Compression</c> is an enumeration integer, and
+	<c>CipherSuite</c> is of type <c>ciphersuite()</c>.</p>
+	</desc>
+      </datatype>
+
+      <datatype>
+	<name name="server_alpn"/>
+	<desc>  
+	  <p>Indicates the server will try to perform
+	  Application-Layer Protocol Negotiation (ALPN).</p>
+	  
+	  <p>The list of protocols is in order of preference. The
+	  protocol negotiated will be the first in the list that
+	  matches one of the protocols advertised by the client. If no
+	  protocol matches, the server will fail the connection with a
+	  "no_application_protocol" alert.</p>
+	  
+	  <p>The negotiated protocol can be retrieved using the
+	  <c>negotiated_protocol/1</c> function.</p>
+	</desc>
+      </datatype>
+      
+      <datatype>
+	<name name="server_next_protocol"/>
+	<desc><p>List of protocols to send to the client if the client
+	indicates that it supports the Next Protocol extension. The
+	client can select a protocol that is not on this list. The
+	list of protocols must not contain an empty binary. If the
+	server negotiates a Next Protocol, it can be accessed using
+	the <c>negotiated_next_protocol/1</c> method.</p>
+	</desc>
+      </datatype>
+
+      <datatype>
+	<name name="server_psk_identity"/>
+	<desc>
+	  <p>Specifies the server identity hint, which the server presents to
+	  the client.</p>
+	</desc>
+      </datatype>
+
+      <datatype>
+	<name name="honor_cipher_order"/>
+	<desc>
+	  <p>If set to <c>true</c>, use the server preference for cipher
+	  selection. If set to <c>false</c> (the default), use the client
+	  preference.</p>
+	</desc>
+      </datatype>
+
+      <datatype>
+	<name name="sni_hosts"/>
+	<desc><p>If the server receives a SNI (Server Name Indication) from the client
+	matching a host listed in the <c>sni_hosts</c> option, the specific options for
+	that host will override previously specified options.
+	
+	The option <c>sni_fun</c>, and <c>sni_hosts</c> are mutually exclusive.</p>
+	</desc>
+      </datatype>
+
+      <datatype>
+	<name name="sni_fun"/>
+	<desc>
+	  <p>If the server receives a SNI (Server Name Indication)
+	  from the client, the given function will be called to
+	  retrieve <seealso marker="#type-server_option">[server_option()] </seealso> for the indicated server.
+	  These options will be merged into predefined
+	  <seealso marker="#type-server_option">[server_option()] </seealso> list.
+	  
+	  The function should be defined as:
+          fun(ServerName :: string()) -> <seealso marker="#type-server_option">[server_option()] </seealso>
+	  and can be specified as a fun or as named <c>fun module:function/1</c>
+	  
+	  The option <c>sni_fun</c>, and <c>sni_hosts</c> are mutually exclusive.</p>
+	</desc>
+      </datatype>
+
+      <datatype>
+	<name name="client_renegotiation"/>
+	<desc><p>In protocols that support client-initiated
+	renegotiation, the cost of resources of such an operation is
+	higher for the server than the client. This can act as a
+	vector for denial of service attacks. The SSL application
+	already takes measures to counter-act such attempts, but
+	client-initiated renegotiation can be strictly disabled by
+	setting this option to <c>false</c>. The default value is
+	<c>true</c>.  Note that disabling renegotiation can result in
+	long-lived connections becoming unusable due to limits on the
+	number of messages the underlying cipher suite can
+	encipher.</p>
+	</desc>
+      </datatype>
+      
+      <datatype>
+	<name name="honor_cipher_order"/>
+	<desc><p>If true, use the server's preference for cipher
+	selection. If false (the default), use the client's
+	preference.</p>
+	</desc>
+      </datatype>
+
+      <datatype>
+	<name name="honor_ecc_order"/>
+	<desc><p>If true, use the server's preference for ECC curve
+	selection. If false (the default), use the client's
+	preference.</p>
+	</desc>
+      </datatype>
+
+      <datatype>
+	<name name="server_signature_algs"/>
+	<desc><p> The algorithms specified by this option will be the
+	ones accepted by the server in a signature algorithm
+	negotiation, introduced in TLS-1.2. The algorithms will also
+	be offered to the client if a client certificate is
+	requested. For more details see the <seealso
+	marker="#type-client_signature_algs">corresponding client
+	option</seealso>.
+      </p>
+	</desc>
+      </datatype>
+    </datatypes>
 
-    <list type="bulleted">
-      <item><p><c>{ssl, Socket, Data}</c></p></item>
-      <item><p><c>{ssl_closed, Socket}</c></p></item>
-      <item><p><c>{ssl_error, Socket, Reason}</c></p></item>
-    </list>
+<!--
+    ================================================================
+    =  Function definitions                                        =
+    ================================================================
+-->
 
-    <p>A <c>Timeout</c> argument specifies a time-out in milliseconds. The
-      default value for argument <c>Timeout</c> is <c>infinity</c>.</p>
-  </section>
-  
   <funcs>
 
     <func>
-      <name>append_cipher_suites(Deferred, Suites) -> ciphers() </name>
+      <name since="OTP 20.3">append_cipher_suites(Deferred, Suites) -> ciphers() </name>
       <fsummary></fsummary>
       <type>
-           <v>Deferred = ciphers() | cipher_filters() </v>
-	   <v>Suites  = ciphers() </v>
+        <v>Deferred = <seealso marker="#type-ciphers">ciphers()</seealso> |
+	<seealso marker="#type-cipher_filters">cipher_filters()</seealso></v>
+	<v>Suites  =  <seealso marker="#type-ciphers">ciphers()</seealso></v>
       </type>
       <desc><p>Make <c>Deferred</c> suites become the least preferred
       suites, that is put them at the end of the cipher suite list
@@ -889,8 +1126,8 @@ fun(srp, Username :: string(), UserState :: term()) ->
     </func>
     
     <func>
-      <name>cipher_suites() -></name>
-      <name>cipher_suites(Type) -> old_ciphers()</name>
+      <name since="OTP R14B">cipher_suites() -></name>
+      <name since="OTP R14B">cipher_suites(Type) -> [old_cipher_suite()]</name>
       <fsummary>Returns a list of supported cipher suites.</fsummary>
       <type>
         <v>Type = erlang | openssl | all</v>
@@ -901,12 +1138,12 @@ fun(srp, Username :: string(), UserState :: term()) ->
     </func>
     
    <func>
-      <name>cipher_suites(Supported, Version) ->  ciphers()</name>
+      <name since="OTP 20.3">cipher_suites(Supported, Version) ->  ciphers()</name>
       <fsummary>Returns a list of all default or
       all supported cipher suites.</fsummary>
       <type>
         <v> Supported = default | all | anonymous </v>
-	<v> Version = protocol_version() </v>
+	<v> Version = <seealso marker="#type-protocol_version">protocol_version() </seealso></v>
       </type>
       <desc><p>Returns all default or all supported (except anonymous),
       or all anonymous cipher suites for a
@@ -915,10 +1152,16 @@ fun(srp, Username :: string(), UserState :: term()) ->
     </func>
 
     <func>
-      <name>eccs() -></name>
-      <name>eccs(protocol_version()) -> [named_curve()]</name>
+      <name since="OTP 19.2">eccs() -></name>
+      <name since="OTP 19.2">eccs(Version) -> NamedCurves</name>
       <fsummary>Returns a list of supported ECCs.</fsummary>
 
+      <type>
+	<v> Version = <seealso marker="#type-protocol_version">protocol_version() </seealso></v>
+	<v> NamedCurves = <seealso marker="#type-named_curve">[named_curve()] </seealso></v>
+	
+      </type>
+      
       <desc><p>Returns a list of supported ECCs. <c>eccs()</c>
       is equivalent to calling <c>eccs(Protocol)</c> with all
       supported protocols and then deduplicating the output.</p>
@@ -926,7 +1169,7 @@ fun(srp, Username :: string(), UserState :: term()) ->
     </func>
     
     <func>
-      <name>clear_pem_cache() -> ok </name>
+      <name since="OTP 17.5">clear_pem_cache() -> ok </name>
       <fsummary> Clears the pem cache</fsummary>
 
       <desc><p>PEM files, used by ssl API-functions, are cached. The
@@ -938,61 +1181,68 @@ fun(srp, Username :: string(), UserState :: term()) ->
     </func>
    
     <func>
-      <name>connect(Socket, SslOptions) -> </name>
-      <name>connect(Socket, SslOptions, Timeout) -> {ok, SslSocket} | {ok, SslSocket, Ext}
+      <name since="OTP R14B">connect(Socket, Options) -> </name>
+      <name since="">connect(Socket, Options, Timeout) -> {ok, SslSocket} | {ok, SslSocket, Ext}
 	| {error, Reason}</name>
       <fsummary>Upgrades a <c>gen_tcp</c>, or
 	equivalent, connected socket to an TLS socket.</fsummary>
       <type>
-	<v>Socket = socket()</v>
-	<v>SslOptions = [{handshake, hello| full} | ssl_option()]</v>
-	<v>Timeout = integer() | infinity</v>
-	<v>SslSocket = sslsocket()</v>
-	<v>Ext = hello_extensions()</v>
-	<v>Reason = term()</v>
+	<v>Socket = <seealso marker="#type-socket"> socket() </seealso></v>
+	<v>Options = <seealso marker="#type-tls_client_option"> [tls_client_option()] </seealso></v>
+	<v>Timeout = timeout()</v>
+	<v>SslSocket =  <seealso marker="#type-sslsocket"> sslsocket() </seealso></v>
+	<v>Ext = <seealso marker="#type-protocol_extensions">protocol_extensions()</seealso></v>
+	<v>Reason = closed | timeout | <seealso marker="#type-error_alert"> error_alert() </seealso></v>
       </type>
       <desc><p>Upgrades a <c>gen_tcp</c>, or equivalent,
 	  connected socket to an TLS socket, that is, performs the
 	  client-side TLS handshake.</p>
 	  
-	  <note><p>If the option <c>verify</c> is set to <c>verify_peer</c>
-	  the option <c>server_name_indication</c> shall also be specified,
-	  if it is not no Server Name Indication extension will be sent,
-	  and <seealso marker="public_key:public_key#pkix_verify_hostname-2">public_key:pkix_verify_hostname/2</seealso>
-	  will be called with the IP-address of the connection as <c>ReferenceID</c>, which is proably not what you want.</p>
+	  <note><p>If the option <c>verify</c> is set to
+	  <c>verify_peer</c> the option <c>server_name_indication</c>
+	  shall also be specified, if it is not no Server Name
+	  Indication extension will be sent, and <seealso
+	  marker="public_key:public_key#pkix_verify_hostname-2">public_key:pkix_verify_hostname/2</seealso>
+	  will be called with the IP-address of the connection as
+	  <c>ReferenceID</c>, which is proably not what you want.</p>
 	  </note>
 
 	  <p> If the option <c>{handshake, hello}</c> is used the
 	  handshake is paused after receiving the server hello message
 	  and the success response is <c>{ok, SslSocket, Ext}</c>
-	  instead of <c>{ok, SslSocket}</c>. Thereafter the handshake is continued or
-	  canceled by calling <seealso marker="#handshake_continue-3">
+	  instead of <c>{ok, SslSocket}</c>. Thereafter the handshake
+	  is continued or canceled by calling <seealso
+	  marker="#handshake_continue-3">
 	  <c>handshake_continue/3</c></seealso> or <seealso
-	  marker="#handshake_cancel-1"><c>handshake_cancel/1</c></seealso>.	 
+	  marker="#handshake_cancel-1"><c>handshake_cancel/1</c></seealso>.
 	  </p>
 	  
+	  <p> If the option <c>active</c> is set to <c>once</c>, <c>true</c> or an integer value,
+	  the process owning the sslsocket will receive messages of type 
+	  <seealso marker="#type-active_msgs"> active_msgs() </seealso>
+	  </p>
     </desc>
     </func>
 
     <func>
-      <name>connect(Host, Port, Options) -></name>
-      <name>connect(Host, Port, Options, Timeout) ->
+      <name since="">connect(Host, Port, Options) -></name>
+      <name since="">connect(Host, Port, Options, Timeout) ->
 	  {ok, SslSocket}| {ok, SslSocket, Ext} | {error, Reason}</name>
       <fsummary>Opens an TLS/DTLS connection to <c>Host</c>, <c>Port</c>.</fsummary>
       <type>
-	  <v>Host = host()</v>
-	  <v>Port = integer()</v>
-	  <v>Options = [option()]</v>
-	  <v>Timeout = integer() | infinity</v>
-	  <v>SslSocket = sslsocket()</v>
-	  <v>Reason = term()</v>
+	  <v>Host =<seealso marker="#type-host"> host() </seealso> </v>
+	  <v>Port = <seealso marker="kernel:inet#type-port_number">inet:port_number()</seealso></v>
+	  <v>Options = <seealso marker="#type-tls_client_option"> [tls_client_option()]</seealso></v>
+	  <v>Timeout = timeout()</v>
+	  <v>SslSocket =  <seealso marker="#type-sslsocket"> sslsocket() </seealso></v>
+	  <v>Reason = closed | timeout | <seealso marker="#type-error_alert"> error_alert() </seealso></v>
       </type>
       <desc><p>Opens an TLS/DTLS connection to <c>Host</c>, <c>Port</c>.</p>
       
       <p> When the option <c>verify</c> is set to <c>verify_peer</c> the check 
       <seealso marker="public_key:public_key#pkix_verify_hostname-2">public_key:pkix_verify_hostname/2</seealso> 
       will be performed in addition to the usual x509-path validation checks. If the check fails the error {bad_cert, hostname_check_failed} will
-      be propagated to the path validation fun <seealso marker="#verify_fun">verify_fun</seealso>, where it is possible to do customized
+      be propagated to the path validation fun <seealso marker="#type-custom_verify">verify_fun</seealso>, where it is possible to do customized
       checks by using the full possibilities of the <seealso marker="public_key:public_key#pkix_verify_hostname-3">public_key:pkix_verify_hostname/3</seealso> API.
       
       When the option <c>server_name_indication</c> is provided, its value (the DNS name) will be used as <c>ReferenceID</c>
@@ -1014,14 +1264,19 @@ fun(srp, Username :: string(), UserState :: term()) ->
 	  <c>handshake_continue/3</c></seealso> or <seealso
 	  marker="#handshake_cancel-1"><c>handshake_cancel/1</c></seealso>.
 	  </p>
+
+	  <p> If the option <c>active</c> is set to <c>once</c>, <c>true</c> or an integer value,
+	  the process owning the sslsocket will receive messages of type 
+	  <seealso marker="#type-active_msgs"> active_msgs() </seealso>
+	  </p>
       </desc>
     </func>
 
     <func>
-      <name>close(SslSocket) -> ok | {error, Reason}</name>
+      <name since="">close(SslSocket) -> ok | {error, Reason}</name>
       <fsummary>Closes an TLS/DTLS connection.</fsummary>
       <type>
-	  <v>SslSocket = sslsocket()</v>
+	  <v>SslSocket =  <seealso marker="#type-sslsocket"> sslsocket() </seealso></v>
 	  <v>Reason = term()</v>
       </type>
       <desc><p>Closes an TLS/DTLS connection.</p>
@@ -1029,10 +1284,10 @@ fun(srp, Username :: string(), UserState :: term()) ->
     </func>
 
     <func>
-      <name>close(SslSocket, How) -> ok | {ok, port()} | {error, Reason}</name>
+      <name since="OTP 18.1">close(SslSocket, How) -> ok | {ok, port()} | {error, Reason}</name>
       <fsummary>Closes an TLS connection.</fsummary>
       <type>
-	  <v>SslSocket = sslsocket()</v>
+	  <v>SslSocket =  <seealso marker="#type-sslsocket"> sslsocket() </seealso></v>
 	  <v>How =  timeout() | {NewController::pid(), timeout()} </v>
 	  <v>Reason = term()</v>
       </type>
@@ -1044,12 +1299,12 @@ fun(srp, Username :: string(), UserState :: term()) ->
     </func>
     
     <func>
-      <name>controlling_process(SslSocket, NewOwner) ->
+      <name since="">controlling_process(SslSocket, NewOwner) ->
 	ok | {error, Reason}</name>
 	<fsummary>Assigns a new controlling process to the
 	TLS/DTLS socket.</fsummary>
 	<type>
-	  <v>SslSocket = sslsocket()</v>
+	  <v>SslSocket =  <seealso marker="#type-sslsocket"> sslsocket() </seealso></v>
 	  <v>NewOwner = pid()</v>
 	  <v>Reason = term()</v>
 	</type>
@@ -1060,12 +1315,12 @@ fun(srp, Username :: string(), UserState :: term()) ->
     </func>
 
     <func>
-      <name>connection_information(SslSocket) ->
+      <name since="OTP 18.0">connection_information(SslSocket) ->
         {ok, Result} |  {error, Reason} </name>
       <fsummary>Returns all the connection information.
       </fsummary>
       <type>
-	<v>SslSocket = sslsocket()</v>
+	<v>SslSocket =  <seealso marker="#type-sslsocket"> sslsocket() </seealso></v>
         <v>Item = protocol | selected_cipher_suite | sni_hostname | ecc | session_id | atom()</v>
 	<d>Meaningful atoms, not specified above, are the ssl option names.</d>
 	<v>Result = [{Item::atom(), Value::term()}]</v>
@@ -1081,12 +1336,12 @@ fun(srp, Username :: string(), UserState :: term()) ->
     </func>
 
     <func>
-      <name>connection_information(SslSocket, Items) ->
+      <name since="OTP 18.0">connection_information(SslSocket, Items) ->
         {ok, Result} |  {error, Reason} </name>
       <fsummary>Returns the requested connection information.
       </fsummary>
       <type>
-	<v>SslSocket = sslsocket()</v>
+	<v>SslSocket =  <seealso marker="#type-sslsocket"> sslsocket() </seealso></v>
 	<v>Items = [Item]</v>
 	<v>Item = protocol | cipher_suite | sni_hostname | ecc | session_id | client_random 
           | server_random  | master_secret | atom()</v>
@@ -1103,11 +1358,11 @@ fun(srp, Username :: string(), UserState :: term()) ->
     </func>
 
       <func>
-      <name>filter_cipher_suites(Suites, Filters) -> ciphers()</name>
+      <name since="OTP 20.3">filter_cipher_suites(Suites, Filters) -> ciphers()</name>
       <fsummary></fsummary>
       <type>
-	<v> Suites = ciphers()</v>
-        <v> Filters = cipher_filters()</v>
+	<v> Suites =  <seealso marker="#type-ciphers"> ciphers() </seealso></v>
+        <v> Filters =  <seealso marker="#type-cipher_filters"> cipher_filters() </seealso></v>
       </type>
       <desc><p>Removes cipher suites if any of the filter functions
       returns false for any part of the cipher suite. This function
@@ -1118,7 +1373,7 @@ fun(srp, Username :: string(), UserState :: term()) ->
     </func>
     
     <func>
-      <name>format_error(Reason) -> string()</name>
+      <name since="">format_error(Reason) -> string()</name>
       <fsummary>Returns an error string.</fsummary>
       <type>
         <v>Reason = term()</v>
@@ -1129,11 +1384,11 @@ fun(srp, Username :: string(), UserState :: term()) ->
     </func>
    
     <func>
-      <name>getopts(SslSocket, OptionNames) ->
+      <name since="">getopts(SslSocket, OptionNames) ->
 	{ok, [socketoption()]} | {error, Reason}</name>
       <fsummary>Gets the values of the specified options.</fsummary>
       <type>
-	<v>Socket = sslsocket()</v>
+	<v>Socket =  <seealso marker="#type-sslsocket"> sslsocket() </seealso></v>
 	<v>OptionNames = [atom()]</v>
       </type>
       <desc>
@@ -1143,13 +1398,13 @@ fun(srp, Username :: string(), UserState :: term()) ->
     </func>
 
     <func>
-      <name>getstat(SslSocket) ->
+      <name since="OTP 19.0">getstat(SslSocket) ->
         {ok, OptionValues} | {error, inet:posix()}</name>
-      <name>getstat(SslSocket, OptionNames) ->
+      <name since="OTP 19.0">getstat(SslSocket, OptionNames) ->
         {ok, OptionValues} | {error, inet:posix()}</name>
       <fsummary>Get one or more statistic options for a socket</fsummary>
       <type>
-    <v>SslSocket = sslsocket()</v>
+    <v>SslSocket =  <seealso marker="#type-sslsocket"> sslsocket() </seealso></v>
     <v>OptionNames = [atom()]</v>
         <v>OptionValues = [{inet:stat_option(), integer()}]</v>
       </type>
@@ -1160,31 +1415,36 @@ fun(srp, Username :: string(), UserState :: term()) ->
     </func>
 
     <func>
-      <name>handshake(HsSocket) -> </name>
-      <name>handshake(HsSocket, Timeout) -> {ok, SslSocket}  | {error, Reason}</name>
+      <name since="OTP 21.0">handshake(HsSocket) -> </name>
+      <name since="OTP 21.0">handshake(HsSocket, Timeout) -> {ok, SslSocket}  | {error, Reason}</name>
       <fsummary>Performs server-side SSL/TLS handshake.</fsummary>
       <type>
-        <v>HsSocket = SslSocket = sslsocket()</v>
-        <v>Timeout = integer()</v>
-        <v>Reason = term()</v>
+        <v>HsSocket = SslSocket =  <seealso marker="#type-sslsocket"> sslsocket() </seealso></v>
+        <v>Timeout = timeout()</v>
+        <v>Reason = closed | timeout | <seealso marker="#type-error_alert"> error_alert() </seealso></v>
       </type>
       <desc>
         <p>Performs the SSL/TLS/DTLS server-side handshake.</p>
 	<p>Returns a new TLS/DTLS socket if the handshake is successful.</p>
+
+	<p> If the option <c>active</c> is set to <c>once</c>, <c>true</c> or an integer value,
+	the process owning the sslsocket will receive messages of type 
+	<seealso marker="#type-active_msgs"> active_msgs() </seealso>
+	</p>	
       </desc>
     </func>
 
     <func>
-      <name>handshake(Socket, SslOptions) -> </name>
-      <name>handshake(Socket, SslOptions, Timeout) -> {ok, SslSocket} | {ok, SslSocket, Ext} | {error, Reason}</name>
+      <name since="OTP 21.0">handshake(Socket, Options) -> </name>
+      <name since="OTP 21.0">handshake(Socket, Options, Timeout) -> {ok, SslSocket} | {ok, SslSocket, Ext} | {error, Reason}</name>
       <fsummary>Performs server-side SSL/TLS/DTLS handshake.</fsummary>
       <type>
-        <v>Socket = socket() | sslsocket() </v>
-	<v>SslSocket = sslsocket() </v>
-	<v>Ext = hello_extensions()</v>
-	<v>SslOptions = [{handshake, hello| full} | ssl_option()]</v>
-        <v>Timeout = integer()</v>
-        <v>Reason = term()</v>
+        <v>Socket = socket() |  <seealso marker="#type-sslsocket"> socket() </seealso> </v>
+	<v>SslSocket =  <seealso marker="#type-sslsocket"> sslsocket() </seealso> </v>
+	<v>Ext =  <seealso marker="#type-protocol_extensions">protocol_extensions()</seealso></v>
+	<v>Options = <seealso marker="#type-tls_server_option"> [server_option()] </seealso>  </v>
+        <v>Timeout = timeout()</v>
+        <v>Reason = closed | timeout | <seealso marker="#type-error_alert"> error_alert() </seealso></v>
       </type>
       <desc>
         <p>If <c>Socket</c> is a ordinary <c>socket()</c>: upgrades a <c>gen_tcp</c>,
@@ -1196,7 +1456,8 @@ fun(srp, Username :: string(), UserState :: term()) ->
 	is undefined.
 	</p></warning>
 	
-	<p>If <c>Socket</c> is an <c>sslsocket()</c>: provides extra SSL/TLS/DTLS
+	<p>If <c>Socket</c> is an 
+	<seealso marker="#type-sslsocket"> sslsocket() </seealso>: provides extra SSL/TLS/DTLS
 	options to those specified in
 	<seealso marker="#listen-2">listen/2 </seealso> and then performs
 	the SSL/TLS/DTLS handshake. Returns a new TLS/DTLS socket if the handshake is successful.</p>
@@ -1210,14 +1471,20 @@ fun(srp, Username :: string(), UserState :: term()) ->
 	  <c>handshake_continue/3</c></seealso> or <seealso
 	  marker="#handshake_cancel-1"><c>handshake_cancel/1</c></seealso>.
 	</p>
+	
+	<p> If the option <c>active</c> is set to <c>once</c>, <c>true</c> or an integer value,
+	the process owning the sslsocket will receive messages of type 
+	<seealso marker="#type-active_msgs"> active_msgs() </seealso>
+	</p>
+	
       </desc>
     </func>
 
     <func>
-      <name>handshake_cancel(SslSocket) -> ok </name>
+      <name since="OTP 21.0">handshake_cancel(SslSocket) -> ok </name>
       <fsummary>Cancel handshake with a fatal alert</fsummary>
       <type>
-        <v>SslSocket = sslsocket()</v>
+        <v>SslSocket =  <seealso marker="#type-sslsocket"> sslsocket() </seealso></v>
       </type>
       <desc>
         <p>Cancel the handshake with a fatal <c>USER_CANCELED</c> alert.</p>
@@ -1225,14 +1492,14 @@ fun(srp, Username :: string(), UserState :: term()) ->
     </func>
 
     <func>
-      <name>handshake_continue(HsSocket, SSLOptions) -> {ok, SslSocket} | {error, Reason}</name>
-      <name>handshake_continue(HsSocket, SSLOptions, Timeout) -> {ok, SslSocket} | {error, Reason}</name>
+      <name since="OTP 21.0">handshake_continue(HsSocket, Options) -> {ok, SslSocket} | {error, Reason}</name>
+      <name since="OTP 21.0">handshake_continue(HsSocket, Options, Timeout) -> {ok, SslSocket} | {error, Reason}</name>
       <fsummary>Continue the SSL/TLS handshake.</fsummary>
       <type>
-	<v>HsSocket = SslSocket = sslsocket()</v>
-	<v>SslOptions = [ssl_option()]</v>
-	<v>Timeout = integer()</v>
-	<v>Reason = term()</v>
+	<v>HsSocket = SslSocket =  <seealso marker="#type-sslsocket"> sslsocket() </seealso></v>
+	<v>Options = <seealso marker="#type-tls_option"> tls_option() </seealso> </v>
+	<v>Timeout = timeout()</v>
+	<v>Reason = closed | timeout | <seealso marker="#type-error_alert"> error_alert() </seealso></v>
       </type>
       <desc>
         <p>Continue the SSL/TLS handshake possiby with new, additional or changed options.</p>
@@ -1240,13 +1507,13 @@ fun(srp, Username :: string(), UserState :: term()) ->
     </func>
     
     <func>
-      <name>listen(Port, Options) ->
+      <name since="">listen(Port, Options) ->
 	{ok, ListenSocket} | {error, Reason}</name>
       <fsummary>Creates an SSL listen socket.</fsummary>
       <type>
-	<v>Port = integer()</v>
-	<v>Options = options()</v>
-	<v>ListenSocket = sslsocket()</v>
+	<v>Port = <seealso marker="kernel:inet#type-port_number">inet:port_number()</seealso></v>
+	<v>Options = <seealso marker="#type-tls_server_option"> [server_option()] </seealso></v>
+	<v>ListenSocket =  <seealso marker="#type-sslsocket"> sslsocket() </seealso></v>
       </type>
       <desc>
 	<p>Creates an SSL listen socket.</p>
@@ -1254,10 +1521,10 @@ fun(srp, Username :: string(), UserState :: term()) ->
     </func>
 
     <func>
-      <name>negotiated_protocol(SslSocket) -> {ok, Protocol} | {error, protocol_not_negotiated}</name>
+      <name since="OTP 18.0">negotiated_protocol(SslSocket) -> {ok, Protocol} | {error, protocol_not_negotiated}</name>
       <fsummary>Returns the protocol negotiated through ALPN or NPN extensions.</fsummary>
       <type>
-        <v>SslSocket = sslsocket()</v>
+        <v>SslSocket =  <seealso marker="#type-sslsocket"> sslsocket() </seealso></v>
         <v>Protocol = binary()</v>
       </type>
       <desc>
@@ -1268,10 +1535,10 @@ fun(srp, Username :: string(), UserState :: term()) ->
     </func>
     
     <func>
-      <name>peercert(SslSocket) -> {ok, Cert} | {error, Reason}</name>
+      <name since="">peercert(SslSocket) -> {ok, Cert} | {error, Reason}</name>
       <fsummary>Returns the peer certificate.</fsummary>
      <type>
-        <v>SslSocket = sslsocket()</v>
+        <v>SslSocket =  <seealso marker="#type-sslsocket"> sslsocket() </seealso></v>
         <v>Cert = binary()</v>
       </type>
       <desc>
@@ -1283,13 +1550,13 @@ fun(srp, Username :: string(), UserState :: term()) ->
     </func>
 
     <func>
-      <name>peername(SslSocket) -> {ok, {Address, Port}} |
+      <name since="">peername(SslSocket) -> {ok, {Address, Port}} |
 	{error, Reason}</name>
       <fsummary>Returns the peer address and port.</fsummary>
       <type>
-        <v>SslSocket = sslsocket()</v>
+        <v>SslSocket =  <seealso marker="#type-sslsocket"> sslsocket() </seealso></v>
         <v>Address = ipaddress()</v>
-        <v>Port = integer()</v>
+	<v>Port = <seealso marker="kernel:inet#type-port_number">inet:port_number()</seealso></v>
       </type>
       <desc>
         <p>Returns the address and port number of the peer.</p>
@@ -1297,11 +1564,12 @@ fun(srp, Username :: string(), UserState :: term()) ->
     </func>
     
       <func>
-      <name>prepend_cipher_suites(Preferred, Suites) -> ciphers()</name>
+      <name since="OTP 20.3">prepend_cipher_suites(Preferred, Suites) -> ciphers()</name>
       <fsummary></fsummary>
       <type>
-        <v>Preferred = ciphers() | cipher_filters() </v>
-	<v>Suites = ciphers() </v>
+	<v>Preferred = <seealso marker="#type-ciphers">ciphers()</seealso> |
+	<seealso marker="#type-cipher_filters">cipher_filters()</seealso></v>
+	<v>Suites  =  <seealso marker="#type-ciphers">ciphers()</seealso></v>
       </type>
       <desc><p>Make <c>Preferred</c> suites become the most preferred
       suites that is put them at the head of the cipher suite list
@@ -1313,13 +1581,13 @@ fun(srp, Username :: string(), UserState :: term()) ->
     </func>
 
     <func>
-      <name>prf(Socket, Secret, Label, Seed, WantedLength) -> {ok, binary()} | {error, reason()}</name>
+      <name since="OTP R15B01">prf(Socket, Secret, Label, Seed, WantedLength) -> {ok, binary()} | {error, reason()}</name>
       <fsummary>Uses a session Pseudo-Random Function to generate key material.</fsummary>
       <type>
-	<v>Socket = sslsocket()</v>
+	<v>Socket =  <seealso marker="#type-sslsocket"> sslsocket() </seealso></v>
 	<v>Secret = binary() | master_secret</v>
 	<v>Label = binary()</v>
-	<v>Seed = [binary() | prf_random()]</v>
+	<v>Seed = [binary() | <seealso marker="#type-prf_random"> prf_random()</seealso>]</v>
 	<v>WantedLength = non_neg_integer()</v>
       </type>
       <desc>
@@ -1333,14 +1601,14 @@ fun(srp, Username :: string(), UserState :: term()) ->
     </func>
     
     <func>
-      <name>recv(SslSocket, Length) -> </name>
-      <name>recv(SslSocket, Length, Timeout) -> {ok, Data} | {error,
+      <name since="">recv(SslSocket, Length) -> </name>
+      <name since="">recv(SslSocket, Length, Timeout) -> {ok, Data} | {error,
 	Reason}</name>
       <fsummary>Receives data on a socket.</fsummary>
       <type>
-        <v>SslSocket = sslsocket()</v>
+        <v>SslSocket =  <seealso marker="#type-sslsocket"> sslsocket() </seealso></v>
         <v>Length = integer()</v>
-        <v>Timeout = integer()</v>
+        <v>Timeout = timeout()</v>
         <v>Data = [char()] | binary()</v>
       </type>
       <desc>
@@ -1360,10 +1628,10 @@ fun(srp, Username :: string(), UserState :: term()) ->
     </func>
     
     <func>
-      <name>renegotiate(SslSocket) -> ok | {error, Reason}</name>
+      <name since="OTP R14B">renegotiate(SslSocket) -> ok | {error, Reason}</name>
       <fsummary>Initiates a new handshake.</fsummary>
       <type>
-	<v>SslSocket = sslsocket()</v>
+	<v>SslSocket =  <seealso marker="#type-sslsocket"> sslsocket() </seealso></v>
       </type>
       <desc><p>Initiates a new handshake. A notable return value is
       <c>{error, renegotiation_rejected}</c> indicating that the peer
@@ -1373,10 +1641,10 @@ fun(srp, Username :: string(), UserState :: term()) ->
     </func>
     
     <func>
-      <name>send(SslSocket, Data) -> ok | {error, Reason}</name>
+      <name since="">send(SslSocket, Data) -> ok | {error, Reason}</name>
       <fsummary>Writes data to a socket.</fsummary>
       <type>
-        <v>SslSocket = sslsocket()</v>
+        <v>SslSocket =  <seealso marker="#type-sslsocket"> sslsocket() </seealso></v>
         <v>Data = iodata()</v>
       </type>
       <desc>
@@ -1387,11 +1655,11 @@ fun(srp, Username :: string(), UserState :: term()) ->
     </func>
 
     <func>
-      <name>setopts(SslSocket, Options) -> ok | {error, Reason}</name>
+      <name since="">setopts(SslSocket, Options) -> ok | {error, Reason}</name>
       <fsummary>Sets socket options.</fsummary>
       <type>
-        <v>SslSocket = sslsocket()</v>
-        <v>Options = [socketoption]()</v>
+        <v>SslSocket =  <seealso marker="#type-sslsocket"> sslsocket() </seealso></v>
+        <v>Options = <seealso marker="#type-socket_option"> [socket_option()] </seealso></v>
       </type>
       <desc>
         <p>Sets options according to <c>Options</c> for socket
@@ -1400,10 +1668,10 @@ fun(srp, Username :: string(), UserState :: term()) ->
     </func>
 
     <func>
-      <name>shutdown(SslSocket, How) -> ok | {error, Reason}</name>
+      <name since="OTP R14B">shutdown(SslSocket, How) -> ok | {error, Reason}</name>
       <fsummary>Immediately closes a socket.</fsummary>
       <type>
-        <v>SslSocket = sslsocket()</v>
+        <v>SslSocket =  <seealso marker="#type-sslsocket"> sslsocket() </seealso></v>
         <v>How = read | write | read_write</v>
         <v>Reason = reason()</v>
       </type>
@@ -1418,13 +1686,13 @@ fun(srp, Username :: string(), UserState :: term()) ->
     </func>
     
     <func>
-      <name>ssl_accept(SslSocket) -> </name>
-      <name>ssl_accept(SslSocket, Timeout) -> ok | {error, Reason}</name>
+      <name since="">ssl_accept(SslSocket) -> </name>
+      <name since="">ssl_accept(SslSocket, Timeout) -> ok | {error, Reason}</name>
       <fsummary>Performs server-side SSL/TLS handshake.</fsummary>
       <type>
-        <v>SslSocket = sslsocket()</v>
-        <v>Timeout = integer()</v>
-        <v>Reason = term()</v>
+        <v>SslSocket =  <seealso marker="#type-sslsocket"> sslsocket() </seealso></v>
+        <v>Timeout = timeout()</v>
+        <v>Reason = closed | timeout | <seealso marker="#type-error_alert"> error_alert() </seealso></v>
       </type>
       <desc>
 	<p>Deprecated in OTP 21, use <seealso marker="#handshake-1">handshake/[1,2]</seealso> instead.</p>
@@ -1433,14 +1701,14 @@ fun(srp, Username :: string(), UserState :: term()) ->
     </func>
 
     <func>
-      <name>ssl_accept(Socket, SslOptions) -> </name>
-      <name>ssl_accept(Socket, SslOptions, Timeout) -> {ok, Socket} | ok | {error, Reason}</name>
+      <name since="">ssl_accept(Socket, Options) -> </name>
+      <name since="OTP R14B">ssl_accept(Socket, Options, Timeout) -> {ok, Socket} | ok | {error, Reason}</name>
       <fsummary>Performs server-side SSL/TLS/DTLS handshake.</fsummary>
       <type>
-        <v>Socket = socket() | sslsocket() </v>
-	<v>SslOptions = [ssl_option()]</v>
-        <v>Timeout = integer()</v>
-        <v>Reason = term()</v>
+        <v>Socket = socket() |  <seealso marker="#type-sslsocket"> sslsocket() </seealso> </v>
+	<v>Options =  <seealso marker="#type-tls_server_option"> [server_option()] </seealso> </v>
+        <v>Timeout = timeout()</v>
+        <v>Reason = closed | timeout | <seealso marker="#type-error_alert"> error_alert() </seealso></v>
       </type>
       <desc>
 	<p>Deprecated in OTP 21, use  <seealso marker="#handshake-3">handshake/[2,3]</seealso> instead.</p>
@@ -1449,13 +1717,13 @@ fun(srp, Username :: string(), UserState :: term()) ->
     </func>
     
     <func>
-      <name>sockname(SslSocket) -> {ok, {Address, Port}} |
+      <name since="">sockname(SslSocket) -> {ok, {Address, Port}} |
 	{error, Reason}</name>
       <fsummary>Returns the local address and port.</fsummary>
       <type>
-        <v>SslSocket = sslsocket()</v>
-        <v>Address = ipaddress()</v>
-        <v>Port = integer()</v>
+        <v>SslSocket =  <seealso marker="#type-sslsocket"> sslsocket() </seealso></v>
+	<v>Address = <seealso marker="#type-ip_address">ip_address()</seealso></v>
+	<v>Port = <seealso marker="kernel:inet#type-port_number">inet:port_number()</seealso></v>
       </type>
       <desc>
         <p>Returns the local address and port number of socket
@@ -1464,8 +1732,8 @@ fun(srp, Username :: string(), UserState :: term()) ->
     </func>
     
     <func>
-      <name>start() -> </name>
-      <name>start(Type) -> ok | {error, Reason}</name>
+      <name since="OTP R14B">start() -> </name>
+      <name since="OTP R14B">start(Type) -> ok | {error, Reason}</name>
       <fsummary>Starts the SSL application.</fsummary>
       <type>
         <v>Type = permanent | transient | temporary</v>
@@ -1477,7 +1745,7 @@ fun(srp, Username :: string(), UserState :: term()) ->
     </func>
 
     <func>
-      <name>stop() -> ok </name>
+      <name since="OTP R14B">stop() -> ok </name>
       <fsummary>Stops the SSL application.</fsummary>
       <desc>
         <p>Stops the SSL application.</p>
@@ -1485,10 +1753,10 @@ fun(srp, Username :: string(), UserState :: term()) ->
     </func>
 
     <func>
-      <name>suite_to_str(CipherSuite) -> String</name>
+      <name since="OTP 21.0">suite_to_str(CipherSuite) -> String</name>
       <fsummary>Returns the string representation of a cipher suite.</fsummary>
       <type>
-        <v>CipherSuite = erl_cipher_suite()</v>
+        <v>CipherSuite =  <seealso marker="#type-erl_cipher_suite"> erl_cipher_suite() </seealso></v>
 	<v>String = string()</v>
       </type>
       <desc>
@@ -1497,14 +1765,14 @@ fun(srp, Username :: string(), UserState :: term()) ->
     </func>
 
     <func>
-      <name>transport_accept(ListenSocket) -></name>
-      <name>transport_accept(ListenSocket, Timeout) ->
+      <name since="">transport_accept(ListenSocket) -></name>
+      <name since="">transport_accept(ListenSocket, Timeout) ->
 	{ok, SslSocket} | {error, Reason}</name>
       <fsummary>Accepts an incoming connection and
 	prepares for <c>ssl_accept</c>.</fsummary>
       <type>
-        <v>ListenSocket = SslSocket = sslsocket()</v>
-        <v>Timeout = integer()</v>
+        <v>ListenSocket = SslSocket =  <seealso marker="#type-sslsocket"> sslsocket() </seealso></v>
+        <v>Timeout = timeout()</v>
         <v>Reason = reason()</v>
       </type>
       <desc>
@@ -1532,7 +1800,7 @@ fun(srp, Username :: string(), UserState :: term()) ->
     </func>
     
     <func>
-      <name>versions() -> [versions_info()]</name>
+      <name since="OTP R14B">versions() -> [versions_info()]</name>
       <fsummary>Returns version information relevant for the
 	SSL application.</fsummary>
       <type>
diff --git a/lib/ssl/doc/src/ssl_app.xml b/lib/ssl/doc/src/ssl_app.xml
index 893919aeb4..b05caf44ea 100644
--- a/lib/ssl/doc/src/ssl_app.xml
+++ b/lib/ssl/doc/src/ssl_app.xml
@@ -35,45 +35,10 @@
 
   <description>
     <p>
-      The ssl application is an implementation of the SSL/TLS/DTLS protocol in Erlang.
+      The ssl application is an implementation of the SSL, TLS and DTLS protocols in Erlang.
     </p>
-    <list type="bulleted">
-      <item>Supported SSL/TLS/DTLS-versions are SSL-3.0, TLS-1.0,
-      TLS-1.1, TLS-1.2, DTLS-1.0 (based on TLS-1.1), DTLS-1.2 (based on TLS-1.2)</item>
-      <item>For security reasons SSL-2.0 is not supported.
-      Interoperability with SSL-2.0 enabled clients dropped. (OTP 21) </item>
-      <item>For security reasons SSL-3.0 is no longer supported by default,
-      but can be configured. (OTP 19) </item>
-      <item>For security reasons RSA key exchange cipher suites are no longer supported by default,
-      but can be configured. (OTP 21) </item>
-      <item>For security reasons DES cipher suites are no longer supported by default,
-      but can be configured. (OTP 20) </item>
-    <item>For security reasons 3DES cipher suites are no longer supported by default,
-    but can be configured. (OTP 21) </item>
-      <item> Renegotiation Indication Extension <url href="http://www.ietf.org/rfc/rfc5746.txt">RFC 5746</url> is supported
-      </item>
-      <item>Ephemeral Diffie-Hellman cipher suites are supported,
-      but not Diffie Hellman Certificates cipher suites.</item>
-      <item>Elliptic Curve cipher suites are supported if the Crypto 
-      application supports it and named curves are used.
-      </item>
-      <item>Export cipher suites are not supported as the
-      U.S. lifted its export restrictions in early 2000.</item>
-      <item>IDEA cipher suites are not supported as they have
-      become deprecated by the latest TLS specification so it is not 
-      motivated to implement them.</item>
-      <item>Compression is not supported.</item>
-      <item>CRL validation is supported.</item>
-      <item>Policy certificate extensions are not supported.</item>
-      <item>'Server Name Indication' extension
-      (<url href="http://www.ietf.org/rfc/rfc6066.txt">RFC 6066</url>) is supported.</item>
-      <item>Application Layer Protocol Negotiation (ALPN) and its successor Next Protocol Negotiation (NPN)
-      are supported. </item>
-      <item>It is possible to use Pre-Shared Key (PSK) and Secure Remote Password (SRP)
-      cipher suites, but they are not enabled by default.
-      </item>
-    </list>
-   </description>
+    <p>For current statement of standards compliance see the <seealso marker="standards_compliance">User's Guide</seealso>.</p>
+  </description>
 
   <section>
     <title>DEPENDENCIES</title>
diff --git a/lib/ssl/doc/src/ssl_crl_cache.xml b/lib/ssl/doc/src/ssl_crl_cache.xml
index 71c6d5e49e..a33aec62a7 100644
--- a/lib/ssl/doc/src/ssl_crl_cache.xml
+++ b/lib/ssl/doc/src/ssl_crl_cache.xml
@@ -24,7 +24,7 @@
     <file>ssl_crl_cache.xml</file>
   </header>
   
-  <module>ssl_crl_cache</module>
+  <module since="OTP 18.0">ssl_crl_cache</module>
   <modulesummary>CRL cache </modulesummary>
   <description>
     <p>
@@ -34,32 +34,43 @@
       the following functions are available.
     </p>
   </description>
+
+    <datatypes>
+    <datatype_title>DATA TYPES</datatype_title>
+
+      <datatype>
+	<name name="crl_src"/>
+      </datatype>
+
+      <datatype>
+	<name name="uri"/>
+      </datatype>
+
+    </datatypes>
   
     <funcs>
       <func>
-	<name>delete(Entries) -> ok |  {error, Reason} </name>
+	<name since="OTP 18.0">delete(Entries) -> ok |  {error, Reason} </name>
 	<fsummary> </fsummary>
 	<type>
-	  <v> Entries =  <seealso marker="stdlib:uri_string">uri_string:uri_string()</seealso> | {file, string()} | {der, [<seealso
-	  marker="public_key:public_key"> public_key:der_encoded() </seealso>]}</v>
-	  <v> Reason = term()</v>
+	  <v> Entries =  <seealso marker="#type-crl_src">crl_src()</seealso>]}</v>
+	  <v> Reason = crl_reason()</v>
 	</type>
 	<desc>
 	  <p>Delete CRLs from the ssl applications local cache. </p>
 	</desc>
       </func>     
       <func>
-	<name>insert(CRLSrc) -> ok | {error, Reason}</name>
-	<name>insert(URI, CRLSrc) -> ok | {error, Reason}</name>
+	<name since="OTP 18.0">insert(CRLSrc) -> ok | {error, Reason}</name>
+	<name since="OTP 18.0">insert(URI, CRLSrc) -> ok | {error, Reason}</name>
 	<fsummary> </fsummary>
 	<type>
-	  <v> CRLSrc = {file, string()} | {der, [ <seealso
-	marker="public_key:public_key"> public_key:der_encoded() </seealso> ]}</v>
-	  <v> URI = <seealso marker="stdlib:uri_string">uri_string:uri_string() </seealso> </v>
+	  <v> CRLSrc = <seealso marker="#type-crl_src">crl_src()</seealso>]}</v>
+	  <v> URI = <seealso marker="#type-uri">uri()</seealso> </v>
 	  <v> Reason = term()</v>
 	</type>
 	<desc>
-	 <p>Insert CRLs into the ssl applications local cache. </p>
+	 <p>Insert CRLs, available to fetch on DER format from <c>URI</c>, into the ssl applications local cache. </p>
 	</desc>
       </func>
     </funcs>
diff --git a/lib/ssl/doc/src/ssl_crl_cache_api.xml b/lib/ssl/doc/src/ssl_crl_cache_api.xml
index c6774b4df6..4cba4e1de1 100644
--- a/lib/ssl/doc/src/ssl_crl_cache_api.xml
+++ b/lib/ssl/doc/src/ssl_crl_cache_api.xml
@@ -24,7 +24,7 @@
     <file>ssl_crl_cache_api.xml</file>
   </header>
   
-  <module>ssl_crl_cache_api</module>
+  <module since="OTP 18.0">ssl_crl_cache_api</module>
   <modulesummary>API for a SSL/TLS CRL (Certificate Revocation List) cache.</modulesummary>
   <description>
     <p>
@@ -39,35 +39,44 @@
       a CRL cache.
     </p>
   </description>
-  
-  <section>
-    <title>DATA TYPES</title>
-    
-    <p>The following data types are used in the functions below:
-    </p>
-    
-    <taglist>
-      
-    <tag><c>cache_ref() =</c></tag> 
-    <item>opaque()</item>
-    <tag><c>dist_point() =</c></tag>
-    <item><p>#'DistributionPoint'{} see <seealso
-    marker="public_key:public_key_records"> X509 certificates records</seealso></p></item>
-    
-    </taglist>
+
+
+  <!--
+      ================================================================
+      =  Data types                                                  =
+      ================================================================
+  -->
+
+  <datatypes>
     
-  </section>
+     <datatype>
+	<name name="crl_cache_ref"/>
+	<desc>
+	  <p>Reference to the CRL cache.</p>
+	</desc>
+      </datatype>
+
+
+     <datatype>
+	<name name="dist_point"/>
+	<desc>
+	  <p>For description see <seealso 
+	  marker="public_key:public_key_records"> X509 certificates records</seealso></p>
+	</desc>
+     </datatype>      
+   </datatypes>
+  
   <funcs>
       <func>
-      <name>fresh_crl(DistributionPoint, CRL) -> FreshCRL</name>
+      <name since="OTP 18.0">fresh_crl(DistributionPoint, CRL) -> FreshCRL</name>
       <fsummary> <c>fun fresh_crl/2 </c> will be used as input option <c>update_crl</c> to
       public_key:pkix_crls_validate/3 </fsummary>
       <type>
-	<v> DistributionPoint = dist_point() </v>
+	<v> DistributionPoint = <seealso marker="#type-dist_point"> dist_point() </seealso> </v>
 	<v> CRL = [<seealso
-	marker="public_key:public_key">public_key:der_encoded()</seealso>] </v>
+	marker="public_key:public_key#type-der_encoded">public_key:der_encoded()</seealso>] </v>
 	<v> FreshCRL = [<seealso
-	marker="public_key:public_key">public_key:der_encoded()</seealso>] </v>
+	marker="public_key:public_key#type-der_encoded">public_key:der_encoded()</seealso>] </v>
       </type>
       <desc>
 	<p> <c>fun fresh_crl/2 </c> will be used as input option <c>update_crl</c> to
@@ -76,16 +85,16 @@
     </func>
     
     <func>
-      <name>lookup(DistributionPoint, Issuer, DbHandle) -> not_available | CRLs </name>
-      <name>lookup(DistributionPoint, DbHandle) -> not_available | CRLs </name>
+      <name since="OTP 19.0">lookup(DistributionPoint, Issuer, DbHandle) -> not_available | CRLs </name>
+      <name since="OTP 18.0">lookup(DistributionPoint, DbHandle) -> not_available | CRLs </name>
       <fsummary> </fsummary>
       <type>
-        <v> DistributionPoint = dist_point() </v>
+	<v> DistributionPoint = <seealso marker="#type-dist_point"> dist_point() </seealso> </v>
         <v> Issuer = <seealso
-	marker="public_key:public_key">public_key:issuer_name()</seealso> </v>
-	<v> DbHandle  = cache_ref() </v>
+	marker="public_key:public_key#type-issuer_name">public_key:issuer_name()</seealso> </v>
+	<v> DbHandle = <seealso marker="#type-crl_cache_ref"> crl_cache_ref() </seealso></v>
 	<v> CRLs = [<seealso
-	   marker="public_key:public_key">public_key:der_encoded()</seealso>] </v>
+	   marker="public_key:public_key#type-der_encoded">public_key:der_encoded()</seealso>] </v>
 	</type>
 	<desc> <p>Lookup the CRLs belonging to the distribution point <c> Distributionpoint</c>.
 	This function may choose to only look in the cache or to follow distribution point
@@ -106,12 +115,12 @@
     </func>
     
     <func>
-      <name>select(Issuer, DbHandle) -> CRLs </name>
+      <name since="OTP 18.0">select(Issuer, DbHandle) -> CRLs </name>
       <fsummary>Select the CRLs in the cache that are issued by <c>Issuer</c></fsummary>
       <type>
 	<v> Issuer = <seealso
-	marker="public_key:public_key">public_key:issuer_name()</seealso></v>
-	<v> DbHandle  = cache_ref() </v>
+	marker="public_key:public_key#type-issuer_name">public_key:issuer_name()</seealso></v>
+	<v> DbHandle = <seealso marker="#type-crl_cache_ref"> cache_ref() </seealso></v>
 	</type>
 	<desc>
 	  <p>Select the CRLs in the cache that are issued by <c>Issuer</c> </p>
diff --git a/lib/ssl/doc/src/ssl_distribution.xml b/lib/ssl/doc/src/ssl_distribution.xml
index e14f3f90dc..1774bd8f77 100644
--- a/lib/ssl/doc/src/ssl_distribution.xml
+++ b/lib/ssl/doc/src/ssl_distribution.xml
@@ -191,7 +191,7 @@ Eshell V5.0  (abort with ^G)
       Any available SSL/TLS option can be specified in an options file,
       but note that options that take a <c>fun()</c> has to use
       the syntax <c>fun Mod:Func/Arity</c> since a function
-      body can not be compiled when consulting a file.
+      body cannot be compiled when consulting a file.
     </p>
     <p>
       Do not tamper with the socket options
diff --git a/lib/ssl/doc/src/ssl_session_cache_api.xml b/lib/ssl/doc/src/ssl_session_cache_api.xml
index a84a3dfce9..e841729e57 100644
--- a/lib/ssl/doc/src/ssl_session_cache_api.xml
+++ b/lib/ssl/doc/src/ssl_session_cache_api.xml
@@ -28,7 +28,7 @@
     <rev></rev>
     <file>ssl_session_cache_api.xml</file>
   </header>
-  <module>ssl_session_cache_api</module>
+  <module since="OTP R14B">ssl_session_cache_api</module>
   <modulesummary>TLS session cache API</modulesummary>
 
   <description>
@@ -38,39 +38,50 @@
       defining a new callback module implementing this API.
     </p>
   </description>
-  <section>
-    <title>DATA TYPES</title>
 
-    <p>The following data types are used in the functions for
-    <c>ssl_session_cache_api</c>:</p>
-
-    <taglist>
-      <tag><c>cache_ref() =</c></tag>
-      <item><p><c>opaque()</c></p></item>
-
-      <tag><c>key() =</c></tag>
-      <item><p><c>{partialkey(), session_id()}</c></p></item>
-
-      <tag><c>partialkey() =</c></tag>
-      <item><p><c>opaque()</c></p></item>
-
-      <tag><c>session_id() =</c></tag>
-      <item><p><c>binary()</c></p></item>
-
-      <tag><c>session()</c> =</tag>
-      <item><p><c>opaque()</c></p></item>
-    </taglist>
-
-  </section>
+ <!--
+      ================================================================
+      =  Data types                                                  =
+      ================================================================
+  -->
+
+  <datatypes>
+    
+      <datatype>
+	<name name="session_cache_ref"/>
+      </datatype>
+
+      <datatype>
+	<name name="session_cache_key"/>
+	<desc>
+	  <p>A key to an entry in the session cache.</p>
+	</desc>
+      </datatype>
+
+        <datatype>
+	  <name name="partial_key"/>
+	<desc>
+	   <p>The opaque part of the key. Does not need to be handled
+	  by the callback.</p>
+	</desc>
+      </datatype>
+      
+       <datatype>
+	<name name="session"/>
+	<desc>
+	   <p>The session data that is stored for each session.</p>
+	</desc>
+      </datatype>  
+  </datatypes>
 
   <funcs>
 
     <func>
-      <name>delete(Cache, Key) -> _</name>
+      <name since="OTP R14B">delete(Cache, Key) -> _</name>
       <fsummary>Deletes a cache entry.</fsummary>
       <type>
-	<v>Cache = cache_ref()</v>
-	<v>Key = key()</v>
+	<v>Cache = <seealso marker="#type-session_cache_ref"> session_cache_ref() </seealso></v>
+	<v>Key = <seealso marker="#type-session_cache_key">session_cache_key() </seealso> </v>
       </type>
       <desc>
 	<p>Deletes a cache entry. Is only called from the cache
@@ -80,10 +91,12 @@
     </func>
 
     <func>
-      <name>foldl(Fun, Acc0, Cache) -> Acc</name>
+      <name since="OTP R14B">foldl(Fun, Acc0, Cache) -> Acc</name>
       <fsummary></fsummary>
       <type>
-	<v></v>
+	<v>Fun = fun()</v>
+	<v>Acc0 = Acc = term()</v>
+	<v>Cache = <seealso marker="#type-session_cache_ref"> session_cache_ref() </seealso></v>
       </type>
       <desc>
 	<p>Calls <c>Fun(Elem, AccIn)</c> on successive elements of the
@@ -96,10 +109,11 @@
     </func>
 
     <func>
-      <name>init(Args) -> opaque() </name>
+      <name since="OTP 18.0">init(Args) -> Cache </name>
       <fsummary>Returns cache reference.</fsummary>
       <type>
-	<v>Args = proplists:proplist()</v>
+	<v>Cache = <seealso marker="#type-session_cache_ref"> session_cache_ref() </seealso></v>
+	<v>Args = <seealso marker="stdlib:proplists#type-proplist">proplists:proplist()</seealso></v>
       </type>
       <desc>
 	<p>Includes property <c>{role, client | server}</c>.
@@ -121,12 +135,12 @@
     </func>
 
     <func>
-      <name>lookup(Cache, Key) -> Entry</name>
+      <name since="OTP R14B">lookup(Cache, Key) -> Entry</name>
       <fsummary>Looks up a cache entry.</fsummary>
       <type>
-	<v>Cache = cache_ref()</v>
-	<v>Key = key()</v>
-	<v>Entry = session() | undefined</v>
+	<v>Cache = <seealso marker="#type-session_cache_ref"> session_cache_ref() </seealso></v>
+	<v>Key = <seealso marker="#type-session_cache_key">session_cache_key()</seealso> </v>
+	<v>Session = <seealso marker="#type-session">session()</seealso> | undefined</v>
       </type>
       <desc>
 	<p>Looks up a cache entry. Is to be callable from any
@@ -136,12 +150,12 @@
     </func>
 
     <func>
-      <name>select_session(Cache, PartialKey) -> [session()]</name>
+      <name since="OTP R14B">select_session(Cache, PartialKey) -> [Session]</name>
       <fsummary>Selects sessions that can be reused.</fsummary>
       <type>
-	<v>Cache = cache_ref()</v>
-	<v>PartialKey = partialkey()</v>
-	<v>Session = session()</v>
+	<v>Cache = <seealso marker="#type-session_cache_ref"> session_cache_ref() </seealso></v>
+	<v>PartialKey = <seealso marker="#type-partial_key"> partial_key() </seealso></v>
+	<v>Session = <seealso marker="#type-session">session()</seealso></v>
       </type>
       <desc>
 	<p>Selects sessions that can be reused. Is to be callable
@@ -151,10 +165,10 @@
     </func>
 
     <func>
-      <name>size(Cache) -> integer()</name>
+      <name since="OTP 19.3">size(Cache) -> integer()</name>
       <fsummary>Returns the number of sessions in the cache.</fsummary>
       <type>
-	<v>Cache = cache_ref()</v>
+	<v>Cache = <seealso marker="#type-session_cache_ref"> session_cache_ref() </seealso></v>
       </type>
       <desc>
 	<p>Returns the number of sessions in the cache. If size
@@ -166,11 +180,12 @@
     </func>
 
     <func>
-      <name>terminate(Cache) -> _</name>
+      <name since="OTP R14B">terminate(Cache) -> _</name>
       <fsummary>Called by the process that handles the cache when it
       is about to terminate.</fsummary>
       <type>
-	<v>Cache = term() - as returned by init/0</v>
+	<v>Cache = <seealso marker="#type-session_cache_ref"> session_cache_ref() </seealso></v>
+	<d>As returned by init/0</d>
       </type>
       <desc>
 	<p>Takes care of possible cleanup that is needed when the
@@ -180,12 +195,12 @@
     </func>
 
     <func>
-      <name>update(Cache, Key, Session) -> _</name>
+      <name since="OTP R14B">update(Cache, Key, Session) -> _</name>
       <fsummary>Caches a new session or updates an already cached one.</fsummary>
       <type>
-	<v>Cache = cache_ref()</v>
-	<v>Key = key()</v>
-	<v>Session = session()</v>
+	<v>Cache = <seealso marker="#type-session_cache_ref"> session_cache_ref() </seealso></v>
+	<v>Key = <seealso marker="#type-session_cache_key">session_cache_key()</seealso> </v>
+	<v>Session = <seealso marker="#type-session">session()</seealso></v>
       </type>
       <desc>
 	<p>Caches a new session or updates an already cached one. Is
diff --git a/lib/ssl/doc/src/standards_compliance.xml b/lib/ssl/doc/src/standards_compliance.xml
new file mode 100644
index 0000000000..c20bab4e50
--- /dev/null
+++ b/lib/ssl/doc/src/standards_compliance.xml
@@ -0,0 +1,2312 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<!DOCTYPE chapter SYSTEM "chapter.dtd">
+
+<chapter>
+  <header>
+    <copyright>
+      <year>2015</year>
+      <year>2019</year>
+      <holder>Ericsson AB, All Rights Reserved</holder>
+    </copyright>
+    <legalnotice>
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+  The Initial Developer of the Original Code is Ericsson AB.
+    </legalnotice>
+
+    <title>Standards Compliance</title>
+    <prepared>OTP team</prepared>
+    <docno></docno>
+    <date>2019-03-20</date>
+    <rev>A</rev>
+    <file>standards_compliance.xml</file>
+  </header>
+
+  <section>
+    <title>Purpose</title>
+    <p>This section describes the current state of standards compliance of the ssl application.</p>
+  </section>
+
+  <section>
+    <title>Common (pre TLS 1.3)</title>
+    <list type="bulleted">
+      <item>For security reasons RSA key exchange cipher suites are no longer supported by default,
+      but can be configured. (OTP 21)
+      </item>
+      <item>For security reasons DES cipher suites are no longer supported by default,
+      but can be configured. (OTP 20)
+      </item>
+      <item>For security reasons 3DES cipher suites are no longer supported by default,
+      but can be configured. (OTP 21)
+      </item>
+      <item>Renegotiation Indication Extension <url href="http://www.ietf.org/rfc/rfc5746.txt">RFC 5746</url> is supported
+      </item>
+      <item>Ephemeral Diffie-Hellman cipher suites are supported,
+      but not Diffie Hellman Certificates cipher suites.
+      </item>
+      <item>Elliptic Curve cipher suites are supported if the Crypto
+      application supports it and named curves are used.
+      </item>
+      <item>Export cipher suites are not supported as the
+      U.S. lifted its export restrictions in early 2000.
+      </item>
+      <item>IDEA cipher suites are not supported as they have
+      become deprecated by the TLS 1.2 specification so it is not
+      motivated to implement them.
+      </item>
+      <item>Compression is not supported.
+      </item>
+    </list>
+  </section>
+
+  <section>
+    <title>Common</title>
+    <list type="bulleted">
+      <item>CRL validation is supported.</item>
+      <item>Policy certificate extensions are not supported.</item>
+      <item>'Server Name Indication' extension
+      (<url href="http://www.ietf.org/rfc/rfc6066.txt">RFC 6066</url>) is supported.</item>
+      <item>Application Layer Protocol Negotiation (ALPN) and its successor Next Protocol Negotiation (NPN) are supported. </item>
+      <item>It is possible to use Pre-Shared Key (PSK) and Secure Remote Password (SRP)
+      cipher suites, but they are not enabled by default.
+      </item>
+    </list>
+  </section>
+
+
+  <section>
+    <title>SSL 2.0</title>
+    <p>For security reasons SSL-2.0 is not supported. Interoperability with SSL-2.0 enabled clients dropped. (OTP 21)</p>
+  </section>
+
+  <section>
+    <title>SSL 3.0</title>
+    <p>For security reasons SSL-3.0 is no longer supported by default, but can be configured. (OTP 19)</p>
+  </section>
+
+  <section>
+    <title>TLS 1.0</title>
+    <p>For security reasons TLS-1.0 is no longer supported by default, but can be configured. (OTP 22)</p>
+  </section>
+
+  <section>
+    <title>TLS 1.1</title>
+    <p>For security reasons TLS-1.1 is no longer supported by default, but can be configured. (OTP 22)</p>
+  </section>
+
+  <section>
+    <title>TLS 1.2</title>
+    <p>Supported</p>
+  </section>
+
+  <section>
+    <title>DTLS 1.0</title>
+    <p>For security reasons DTLS-1.0 (based on TLS 1.1) is no longer supported by default, but can be configured. (OTP 22)</p>
+  </section>
+
+  <section>
+    <title>DTLS 1.2</title>
+    <p>Supported (based on TLS 1.2)</p>
+  </section>
+
+  <section>
+    <title>DTLS 1.3</title>
+    <p>Not yet supported</p>
+  </section>
+
+  <section>
+    <title>TLS 1.3</title>
+    <p> This section describes the current state of standards compliance for TLS 1.3.</p>
+    <p>(C = Compliant, NC = Non-Compliant, P = Partially-Compliant, NA = Not Applicable)</p>
+    <table>
+      <row>
+        <cell align="left" valign="middle"><em>Section</em></cell>
+        <cell align="left" valign="middle"><em>Feature</em></cell>
+	<cell align="left" valign="middle"><em>State</em></cell>
+	<cell align="left" valign="middle"><em>Since</em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-1.2">
+	    1.3. Updates Affecting TLS 1.2
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"></cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">Version downgrade protection mechanism</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">RSASSA-PSS signature schemes</cell>
+	<cell align="left" valign="middle"><em>P</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">supported_versions (ClientHello) extension</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">signature_algorithms_cert extension</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-2">
+	    2. Protocol Overview
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"></cell>
+	<cell align="left" valign="middle"><em>P</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">(EC)DHE</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">PSK-only</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">PSK with (EC)DHE</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-2.1">
+	    2.1. Incorrect DHE share
+	  </url>
+	</cell>
+        <cell align="left" valign="middle">HelloRetryRequest</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-2.2">
+	    2.2. Resumption and Pre-Shared Key (PSK)
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-2.3">
+	    2.3. 0-RTT Data
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-4.1.1">
+	    4.1.1. Cryptographic Negotiation
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"></cell>
+	<cell align="left" valign="middle"><em>P</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">supported_groups extension</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">signature_algorithms extension</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">pre_shared_key extension</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-4.1.2">
+	    4.1.2. Client Hello
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em>Client</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+     <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">server_name (RFC6066)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">max_fragment_length (RFC6066)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">status_request (RFC6066)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">supported_groups (RFC7919)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">signature_algorithms (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">use_srtp (RFC5764)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">heartbeat (RFC6520)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">application_layer_protocol_negotiation (RFC7301)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">signed_certificate_timestamp (RFC6962)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">client_certificate_type (RFC7250)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">server_certificate_type (RFC7250)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">padding (RFC7685)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">key_share (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">pre_shared_key (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">psk_key_exchange_modes (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">early_data (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">cookie (RFC8446) </cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">supported_versions (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">certificate_authorities (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">oid_filters (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">post_handshake_auth (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">signature_algorithms_cert (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle"><em>Server</em></cell>
+	<cell align="left" valign="middle"><em>PC</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">server_name (RFC6066)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">max_fragment_length (RFC6066)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">status_request (RFC6066)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">supported_groups (RFC7919)</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">signature_algorithms (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">use_srtp (RFC5764)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">heartbeat (RFC6520)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">application_layer_protocol_negotiation (RFC7301)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">signed_certificate_timestamp (RFC6962)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">client_certificate_type (RFC7250)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">server_certificate_type (RFC7250)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">padding (RFC7685)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">key_share (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">pre_shared_key (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">psk_key_exchange_modes (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">early_data (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">cookie (RFC8446) </cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">supported_versions (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">certificate_authorities (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">oid_filters (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">post_handshake_auth (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">signature_algorithms_cert (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-4.1.3">
+	    4.1.3. Server Hello
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em>Client</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">Version downgrade protection</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">key_share (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">pre_shared_key (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">supported_versions (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle"><em>Server</em></cell>
+	<cell align="left" valign="middle"><em>PC</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">Version downgrade protection</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">key_share (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">pre_shared_key (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">supported_versions (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-4.1.4">
+	    4.1.4. Hello Retry Request
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em>Server</em></cell>
+	<cell align="left" valign="middle"><em>PC</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">key_share (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">cookie (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">supported_versions (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-4.2.1">
+	    4.2.1. Supported Versions
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em>Client</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle"><em>Server</em></cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-4.2.2">
+	    4.2.2. Cookie
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em>Client</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle"><em>Server</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"><em></em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-4.2.3">
+	    4.2.3. Signature Algorithms
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em>Client</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">rsa_pkcs1_sha256</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">rsa_pkcs1_sha384</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">rsa_pkcs1_sha512</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">ecdsa_secp256r1_sha256</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">ecdsa_secp384r1_sha384</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">ecdsa_secp521r1_sha512</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">rsa_pss_rsae_sha256</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">rsa_pss_rsae_sha384</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">rsa_pss_rsae_sha512</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">ed25519</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">ed448</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">rsa_pss_pss_sha256</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">rsa_pss_pss_sha384</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">rsa_pss_pss_sha512</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">rsa_pkcs1_sha1</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">ecdsa_sha1</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle"><em>Server</em></cell>
+	<cell align="left" valign="middle"><em>P</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">rsa_pkcs1_sha256</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">rsa_pkcs1_sha384</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">rsa_pkcs1_sha512</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">ecdsa_secp256r1_sha256</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">ecdsa_secp384r1_sha384</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">ecdsa_secp521r1_sha512</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">rsa_pss_rsae_sha256</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">rsa_pss_rsae_sha384</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">rsa_pss_rsae_sha512</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">ed25519</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">ed448</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">rsa_pss_pss_sha256</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">rsa_pss_pss_sha384</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">rsa_pss_pss_sha512</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">rsa_pkcs1_sha1</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">ecdsa_sha1</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-4.2.4">
+	    4.2.4. Certificate Authorities
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em>Client</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle"><em>Server</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"><em></em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-4.2.5">
+	    4.2.5. OID Filters
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em>Client</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle"><em>Server</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"><em></em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-4.2.6">
+	    4.2.6. Post-Handshake Client Authentication
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em>Client</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle"><em>Server</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"><em></em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-4.2.7">
+	    4.2.7. Supported Groups
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em>Client</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">secp256r1</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">secp384r1</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">secp521r1</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">x25519</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">x448</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">ffdhe2048</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">ffdhe3072</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">ffdhe4096</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">ffdhe6144</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">ffdhe8192</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle"><em>Server</em></cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">secp256r1</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">secp384r1</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">secp521r1</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">x25519</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">x448</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">ffdhe2048</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">ffdhe3072</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">ffdhe4096</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">ffdhe6144</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">ffdhe8192</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-4.2.8">
+	    4.2.8. Key Share
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em>Client</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle"><em>Server</em></cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-4.2.9">
+	    4.2.9. Pre-Shared Key Exchange Modes
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em>Client</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle"><em>Server</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"><em></em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-4.2.10">
+	    4.2.10. Early Data Indication
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em>Client</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle"><em>Server</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"><em></em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-4.2.11">
+	    4.2.11. Pre-Shared Key Extension
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em>Client</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle"><em>Server</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"><em></em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-4.2.11.1">
+	    4.2.11.1. Ticket Age
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em>Client</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle"><em>Server</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"><em></em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-4.2.11.2">
+	    4.2.11.2. PSK Binder
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em>Client</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle"><em>Server</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"><em></em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-4.2.11.3">
+	    4.2.11.3. Processing Order
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em>Client</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle"><em>Server</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"><em></em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-4.3.1">
+	    4.3.1. Encrypted Extensions
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em>Client</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">server_name (RFC6066)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">max_fragment_length (RFC6066)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">supported_groups (RFC7919)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">use_srtp (RFC5764)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">heartbeat (RFC6520)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">application_layer_protocol_negotiation (RFC7301)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">client_certificate_type (RFC7250)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">server_certificate_type (RFC7250)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">early_data (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">supported_versions (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle"><em>Server</em></cell>
+	<cell align="left" valign="middle"><em>P</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">server_name (RFC6066)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">max_fragment_length (RFC6066)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">supported_groups (RFC7919)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">use_srtp (RFC5764)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">heartbeat (RFC6520)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">application_layer_protocol_negotiation (RFC7301)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">client_certificate_type (RFC7250)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">server_certificate_type (RFC7250)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">early_data (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">supported_versions (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-4.3.2">
+	    4.3.2. Certificate Request
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em>Client</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">status_request (RFC6066)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">signature_algorithms (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">signed_certificate_timestamp (RFC6962)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">certificate_authorities (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">oid_filters (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">signature_algorithms_cert (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle"><em>Server</em></cell>
+	<cell align="left" valign="middle"><em>P</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">status_request (RFC6066)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">signature_algorithms (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">signed_certificate_timestamp (RFC6962)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">certificate_authorities (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">oid_filters (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">signature_algorithms_cert (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-4.4.1">
+	    4.4.1. The Transcript Hash
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em></em></cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-4.4.2">
+	    4.4.2. Certificate
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em>Client</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">status_request (RFC6066)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">signed_certificate_timestamp (RFC6962)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle"><em>Server</em></cell>
+	<cell align="left" valign="middle"><em>P</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">status_request (RFC6066)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">signed_certificate_timestamp (RFC6962)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-4.4.2.1">
+	    4.4.2.1. OCSP Status and SCT Extensions
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em>Client</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle"><em>Server</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"><em></em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-4.4.2.2">
+	    4.4.2.2. Server Certificate Selection
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em>Client</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"><em></em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">certificate type MUST be X.509v3</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"><em></em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">certificate's public key is compatible</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"><em></em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">The certificate MUST allow the key to be used for signing</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"><em></em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">server_name and certificate_authorities are used</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"><em></em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle"><em>Server</em></cell>
+	<cell align="left" valign="middle"><em>P</em></cell>
+	<cell align="left" valign="middle"><em></em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">certificate type MUST be X.509v3</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">certificate's public key is compatible</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">The certificate MUST allow the key to be used for signing</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">server_name and certificate_authorities are used</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-4.4.2.3">
+	    4.4.2.3. Client Certificate Selection
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em></em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"><em></em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-4.4.2.4">
+	    4.4.2.4. Receiving a Certificate Message
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em>Client</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle"><em>Server</em></cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-4.4.3">
+	    4.4.3. Certificate Verify
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em>Client</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle"><em>Server</em></cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-4.4.4">
+	    4.4.4. Finished
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em>Client</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle"><em>Server</em></cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-4.5">
+	    4.5. End of Early Data
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em>Client</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle"><em>Server</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"><em></em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-4.6.1">
+	    4.6.1. New Session Ticket Message
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em>Client</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">early_data (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle"><em>Server</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"><em></em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">early_data (RFC8446)</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-4.6.2">
+	    4.6.2. Post-Handshake Authentication
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em>Client</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle"><em>Server</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"><em></em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-4.6.3">
+	    4.6.3. Key and Initialization Vector Update
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em>Client</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle"><em>Server</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"><em></em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-5.1">
+	    5.1. Record Layer
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em></em></cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">MUST NOT be interleaved with other record types</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">MUST NOT span key changes</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">MUST NOT send zero-length fragments</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">Alert messages MUST NOT be fragmented</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-5.2">
+	    5.2. Record Payload Protection
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em></em></cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-5.3">
+	    5.3. Per-Record Nonce
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em></em></cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-5.4">
+	    5.4. Record Padding
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em></em></cell>
+	<cell align="left" valign="middle"><em>P</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">MAY choose to pad</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">MUST NOT send Handshake and Alert records that have a zero-length TLSInnerPlaintext.content</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">The padding sent is automatically verified</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-5.5">
+	    5.5. Limits on Key Usage
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em></em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"><em></em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-6.1">
+	    6.1. Closure Alerts
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em></em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"><em></em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">close_notify</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">user_cancelled</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-6.2">
+	    6.2. Error Alerts
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em></em></cell>
+	<cell align="left" valign="middle"><em>PC</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-7.1">
+	    7.1. Key Schedule
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em></em></cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-7.2">
+	    7.2. Updating Traffic Secrets
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em></em></cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-7.3">
+	    7.3. Traffic Key Calculation
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em></em></cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-7.5">
+	    7.5. Exporters
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em></em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"><em></em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-8">
+	    8. 0-RTT and Anti-Replay
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em></em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"><em></em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-8.1">
+	    8.1. Single-Use Tickets
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em></em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"><em></em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-8.2">
+	    8.2. Client Hello Recording
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em></em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"><em></em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-8.3">
+	    8.3. Freshness Checks
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em></em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"><em></em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-9.1">
+	    9.1. Mandatory-to-Implement Cipher Suites
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em></em></cell>
+	<cell align="left" valign="middle"><em>P</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">MUST implement the TLS_AES_128_GCM_SHA256</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">SHOULD implement the TLS_AES_256_GCM_SHA384</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">SHOULD implement the TLS_CHACHA20_POLY1305_SHA256</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle"><em>Digital signatures</em></cell>
+	<cell align="left" valign="middle"><em>P</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">MUST support rsa_pkcs1_sha256 (for certificates)</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">MUST support rsa_pss_rsae_sha256 (for CertificateVerify and certificates)</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">MUST support ecdsa_secp256r1_sha256</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle"><em>Key Exchange</em></cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">MUST support key exchange with secp256r1</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">SHOULD support key exchange with X25519</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-9.2">
+	    9.2. Mandatory-to-Implement Extensions
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em></em></cell>
+	<cell align="left" valign="middle"><em>P</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">Supported Versions</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">Cookie</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">Signature Algorithms</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">Signature Algorithms Certificate</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">Negotiated Groups</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">Key Share</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">Server Name Indication</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle"><em>MUST send and use these extensions</em></cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">"supported_versions" is REQUIRED for ClientHello, ServerHello and HelloRetryRequest</cell>
+	<cell align="left" valign="middle"><em>PC</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">"signature_algorithms" is REQUIRED for certificate authentication</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">"supported_groups" is REQUIRED for ClientHello messages using (EC)DHE key exchange</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">"key_share" is REQUIRED for (EC)DHE key exchange</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">"pre_shared_key" is REQUIRED for PSK key agreement</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">"psk_key_exchange_modes" is REQUIRED for PSK key agreement</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle"><em>TLS 1.3 ClientHello</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"><em></em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">If not containing a "pre_shared_key" extension, it MUST contain both a "signature_algorithms" extension and a "supported_groups" extension.</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">If containing a "supported_groups" extension, it MUST also contain a "key_share" extension, and vice versa.  An empty KeyShare.client_shares vector is permitted.</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle"><em>TLS 1.3 ServerHello</em></cell>
+	<cell align="left" valign="middle"><em>P</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">MUST support the use of the "server_name" extension</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-9.3">
+	    9.3. Protocol Invariants
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em></em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"><em></em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle"><em>MUST correctly handle extensible fields</em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"><em></em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">A client sending a ClientHello MUST support all parameters advertised in it.</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">A middlebox which terminates a TLS connection MUST behave as a compliant TLS server</cell>
+	<cell align="left" valign="middle"><em>NA</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">A middlebox which forwards ClientHello parameters it does not understand MUST NOT process any messages beyond that ClientHello.</cell>
+	<cell align="left" valign="middle"><em>NA</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-B.4">
+	    B.4. Cipher Suites
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em></em></cell>
+	<cell align="left" valign="middle"><em>P</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">TLS_AES_128_GCM_SHA256</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">TLS_AES_256_GCM_SHA384</cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle">22</cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">TLS_CHACHA20_POLY1305_SHA256</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">TLS_AES_128_CCM_SHA256</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+      <row>
+        <cell align="left" valign="middle"></cell>
+        <cell align="left" valign="middle">TLS_AES_128_CCM_8_SHA256</cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-C.1">
+	    C.1. Random Number Generation and Seeding
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em></em></cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-C.2">
+	    C.2. Certificates and Authentication
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em></em></cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-C.3">
+	    C.3. Implementation Pitfalls
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em></em></cell>
+	<cell align="left" valign="middle"><em>P</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-C.4">
+	    C.4. Client Tracking Prevention
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em></em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"><em></em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-C.5">
+	    C.5. Unauthenticated Operation
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em></em></cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-D.1">
+	    D.1. Negotiating with an Older Server
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em></em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"><em></em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-D.2">
+	    D.2. Negotiating with an Older Client
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em></em></cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-D.3">
+	    D.3. 0-RTT Backward Compatibility
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em></em></cell>
+	<cell align="left" valign="middle"><em>NC</em></cell>
+	<cell align="left" valign="middle"><em></em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-D.4">
+	    D.4. Middlebox Compatibility Mode
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em></em></cell>
+	<cell align="left" valign="middle"><em>P</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+
+      <row>
+        <cell align="left" valign="middle">
+	  <url href="https://tools.ietf.org/html/rfc8446#section-D.5">
+	    D.5. Security Restrictions Related to Backward Compatibility
+	  </url>
+	</cell>
+        <cell align="left" valign="middle"><em></em></cell>
+	<cell align="left" valign="middle"><em>C</em></cell>
+	<cell align="left" valign="middle"><em>22</em></cell>
+      </row>
+
+      <tcaption>Standards Compliance</tcaption>
+    </table>
+
+  </section>
+
+</chapter>
diff --git a/lib/ssl/doc/src/usersguide.xml b/lib/ssl/doc/src/usersguide.xml
index 23ccf668c3..b22b2456e4 100644
--- a/lib/ssl/doc/src/usersguide.xml
+++ b/lib/ssl/doc/src/usersguide.xml
@@ -38,6 +38,7 @@
   <xi:include href="ssl_protocol.xml"/>
   <xi:include href="using_ssl.xml"/>
   <xi:include href="ssl_distribution.xml"/>
+  <xi:include href="standards_compliance.xml"/>
 </part>
 
 
diff --git a/lib/ssl/src/Makefile b/lib/ssl/src/Makefile
index 8d1341f594..8dc76f2638 100644
--- a/lib/ssl/src/Makefile
+++ b/lib/ssl/src/Makefile
@@ -39,60 +39,80 @@ RELSYSDIR = $(RELEASE_PATH)/lib/ssl-$(VSN)
 # ----------------------------------------------------
 
 BEHAVIOUR_MODULES= \
-        ssl_session_cache_api \
-	ssl_crl_cache_api
+	ssl_crl_cache_api \
+	ssl_session_cache_api
+
 
 MODULES= \
-	ssl \
-	ssl_alert \
-	ssl_app \
-	ssl_sup \
-	ssl_admin_sup\
-	tls_connection_sup \
-        ssl_connection_sup \
-        ssl_listen_tracker_sup\
+	dtls_connection \
 	dtls_connection_sup \
-	dtls_packet_demux \
+	dtls_handshake \
 	dtls_listener_sup \
-	ssl_dist_sup\
-        ssl_dist_admin_sup\
-        ssl_dist_connection_sup\
+	dtls_packet_demux \
+	dtls_record \
+	dtls_socket \
+	dtls_v1 \
 	inet_tls_dist \
 	inet6_tls_dist \
-	ssl_certificate\
-	ssl_pkix_db\
+	ssl \
+	ssl_admin_sup \
+	ssl_alert \
+	ssl_app \
+	ssl_certificate \
 	ssl_cipher \
 	ssl_cipher_format \
-	ssl_srp_primes \
-	tls_connection \
-	dtls_connection \
-	tls_sender\
 	ssl_config \
 	ssl_connection \
-	tls_handshake \
-	dtls_handshake\
-	ssl_handshake\
-	ssl_manager \
-	ssl_session \
-	ssl_session_cache \
-	ssl_pem_cache \
-	ssl_crl\
+	ssl_connection_sup \
+	ssl_crl \
 	ssl_crl_cache \
 	ssl_crl_hash_dir \
-	tls_socket \
-	dtls_socket \
-	tls_record \
-	dtls_record \
+	ssl_dh_groups \
+	ssl_dist_admin_sup \
+	ssl_dist_connection_sup \
+	ssl_dist_sup \
+	ssl_handshake \
+	ssl_listen_tracker_sup \
+	ssl_logger \
+	ssl_manager \
+	ssl_pem_cache \
+	ssl_pkix_db \
 	ssl_record \
+	ssl_session \
+	ssl_session_cache \
+	ssl_srp_primes \
+	ssl_sup \
 	ssl_v3 \
-	tls_v1 \
-	dtls_v1
+	tls_connection \
+	tls_connection_sup \
+	tls_connection_1_3 \
+	tls_handshake \
+	tls_handshake_1_3 \
+	tls_record \
+	tls_record_1_3 \
+	tls_sender \
+	tls_socket \
+	tls_v1
+
 
 INTERNAL_HRL_FILES = \
-	ssl_alert.hrl ssl_cipher.hrl \
-	tls_connection.hrl dtls_connection.hrl ssl_connection.hrl \
-        ssl_handshake.hrl tls_handshake.hrl dtls_handshake.hrl ssl_api.hrl ssl_internal.hrl \
-        ssl_record.hrl tls_record.hrl dtls_record.hrl ssl_srp.hrl
+	dtls_connection.hrl \
+	dtls_handshake.hrl \
+	dtls_record.hrl \
+	ssl_alert.hrl \
+	ssl_api.hrl \
+	ssl_cipher.hrl \
+	ssl_connection.hrl \
+	ssl_handshake.hrl \
+	ssl_internal.hrl \
+	ssl_record.hrl \
+	ssl_srp.hrl \
+	tls_connection.hrl \
+	tls_handshake.hrl \
+	tls_handshake_1_3.hrl \
+	tls_record.hrl \
+	tls_record_1_3.hrl
+
 
 ERL_FILES= \
 	$(MODULES:%=%.erl) \
@@ -111,6 +131,10 @@ APP_TARGET= $(EBIN)/$(APP_FILE)
 APPUP_SRC= $(APPUP_FILE).src
 APPUP_TARGET= $(EBIN)/$(APPUP_FILE)
 
+DEPDIR=$(ERL_TOP)/lib/ssl/src/deps
+DEP_FILE=$(DEPDIR)/ssl.d
+$(shell mkdir -p $(dir $(DEP_FILE)) >/dev/null)
+
 # ----------------------------------------------------
 # FLAGS
 # ----------------------------------------------------
@@ -118,7 +142,7 @@ EXTRA_ERLC_FLAGS = +warn_unused_vars
 ERL_COMPILE_FLAGS += -I$(ERL_TOP)/lib/kernel/src \
 	-pz $(EBIN) \
 	-pz $(ERL_TOP)/lib/public_key/ebin \
-	$(EXTRA_ERLC_FLAGS) -DVSN=\"$(VSN)\"
+	$(EXTRA_ERLC_FLAGS)
 
 
 # ----------------------------------------------------
@@ -127,11 +151,22 @@ ERL_COMPILE_FLAGS += -I$(ERL_TOP)/lib/kernel/src \
 
 $(TARGET_FILES): $(BEHAVIOUR_TARGET_FILES)
 
-debug opt: $(TARGET_FILES) $(APP_TARGET) $(APPUP_TARGET) 
+$(DEP_FILE): $(ERL_FILES)
+	$(gen_verbose)erlc -M $(ERL_FILES) \
+	| sed "s@$(ERL_TOP)@../../..@g" \
+	| sed "s/\.$(EMULATOR)/\.$$\(EMULATOR\)/" \
+	| sed 's@^dtls_@$$(EBIN)/dtls_@' \
+	| sed 's@^inet_@$$(EBIN)/inet_@' \
+	| sed 's@^ssl_@$$(EBIN)/ssl_@' \
+	| sed 's@^tls_@$$(EBIN)/tls_@' \
+	> $(DEP_FILE)
+
+debug opt: $(TARGET_FILES) $(APP_TARGET) $(APPUP_TARGET) $(DEP_FILE)
 
 clean:
 	rm -f $(TARGET_FILES) $(APP_TARGET) $(APPUP_TARGET) $(BEHAVIOUR_TARGET_FILES) 
 	rm -f errs core *~
+	rm -rf $(DEPDIR)
 
 $(APP_TARGET):	$(APP_SRC) ../vsn.mk
 	$(vsn_verbose)sed -e 's;%VSN%;$(VSN);' $< > $@
@@ -141,7 +176,6 @@ $(APPUP_TARGET):	$(APPUP_SRC) ../vsn.mk
 
 docs:
 
-
 # ----------------------------------------------------
 # Release Target
 # ---------------------------------------------------- 
@@ -159,22 +193,4 @@ release_docs_spec:
 # ----------------------------------------------------
 # Dependencies
 # ----------------------------------------------------
-$(EBIN)/inet_tls_dist.$(EMULATOR): ../../kernel/include/net_address.hrl  ../../kernel/include/dist.hrl  ../../kernel/include/dist_util.hrl
-$(EBIN)/tls.$(EMULATOR): ssl_internal.hrl ssl_record.hrl ssl_cipher.hrl ssl_handshake.hrl ../../public_key/include/public_key.hrl
-$(EBIN)/ssl_alert.$(EMULATOR): ssl_alert.hrl ssl_record.hrl  
-$(EBIN)/ssl_certificate.$(EMULATOR): ssl_internal.hrl ssl_alert.hrl ssl_handshake.hrl ../../public_key/include/public_key.hrl
-$(EBIN)/ssl_certificate_db.$(EMULATOR): ssl_internal.hrl ../../public_key/include/public_key.hrl ../../kernel/include/file.hrl
-$(EBIN)/ssl_cipher.$(EMULATOR): ssl_internal.hrl ssl_record.hrl ssl_cipher.hrl ssl_handshake.hrl ssl_alert.hrl ../../public_key/include/public_key.hrl
-$(EBIN)/tls_connection.$(EMULATOR): ssl_internal.hrl tls_connection.hrl tls_record.hrl ssl_cipher.hrl tls_handshake.hrl ssl_alert.hrl ../../public_key/include/public_key.hrl
-$(EBIN)/dtls_connection.$(EMULATOR): ssl_internal.hrl dtls_connection.hrl dtls_record.hrl ssl_cipher.hrl dtls_handshake.hrl ssl_alert.hrl ../../public_key/include/public_key.hrl
-$(EBIN)/tls_handshake.$(EMULATOR): ssl_internal.hrl tls_record.hrl ssl_cipher.hrl tls_handshake.hrl ssl_alert.hrl ../../public_key/include/public_key.hrl
-$(EBIN)/tls_handshake.$(EMULATOR): ssl_internal.hrl ssl_connection.hrl ssl_record.hrl ssl_cipher.hrl ssl_handshake.hrl ssl_alert.hrl ../../public_key/include/public_key.hrl
-$(EBIN)/ssl_manager.$(EMULATOR): ssl_internal.hrl ssl_handshake.hrl ../../kernel/include/file.hrl
-$(EBIN)/ssl_record.$(EMULATOR):  ssl_internal.hrl ssl_record.hrl ssl_cipher.hrl ssl_handshake.hrl ssl_alert.hrl
-$(EBIN)/ssl_session.$(EMULATOR):  ssl_internal.hrl ssl_handshake.hrl
-$(EBIN)/ssl_session_cache.$(EMULATOR):  ssl_internal.hrl ssl_handshake.hrl
-$(EBIN)/ssl_session_cache_api.$(EMULATOR):  ssl_internal.hrl ssl_handshake.hrl
-$(EBIN)/ssl_ssl3.$(EMULATOR): ssl_internal.hrl ssl_record.hrl ssl_cipher.hrl
-$(EBIN)/ssl_tls1.$(EMULATOR): ssl_internal.hrl ssl_record.hrl ssl_cipher.hrl
-$(EBIN)/ssl_cache.$(EMULATOR): ssl_cache.erl ssl_internal.hrl ../../public_key/include/public_key.hrl
-
+-include $(DEP_FILE)
diff --git a/lib/ssl/src/dtls_connection.erl b/lib/ssl/src/dtls_connection.erl
index 37719ad439..7993be8a74 100644
--- a/lib/ssl/src/dtls_connection.erl
+++ b/lib/ssl/src/dtls_connection.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2013-2018. All Rights Reserved.
+%% Copyright Ericsson AB 2013-2019. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -32,6 +32,7 @@
 -include("ssl_internal.hrl").
 -include("ssl_srp.hrl").
 -include_lib("public_key/include/public_key.hrl"). 
+-include_lib("kernel/include/logger.hrl").
 
 %% Internal application API
 
@@ -39,7 +40,7 @@
 -export([start_fsm/8, start_link/7, init/1, pids/1]).
 
 %% State transition handling	 
--export([next_event/3, next_event/4, handle_common_event/4]).
+-export([next_event/3, next_event/4, handle_protocol_record/3]).
 
 %% Handshake handling
 -export([renegotiate/2, send_handshake/2, 
@@ -50,8 +51,7 @@
 -export([encode_alert/3, send_alert/2, send_alert_in_connection/2, close/5, protocol_name/0]).
 
 %% Data handling
--export([encode_data/3, next_record/1,
-	 send/3, socket/5, setopts/3, getopts/3]).
+-export([next_record/1, socket/4, setopts/3, getopts/3]).
 
 %% gen_statem state functions
 -export([init/3, error/3, downgrade/3, %% Initiation and take down states
@@ -80,7 +80,7 @@ start_fsm(Role, Host, Port, Socket, {#ssl_options{erl_dist = false},_, Tracker}
     end.
 
 %%--------------------------------------------------------------------
--spec start_link(atom(), host(), inet:port_number(), port(), list(), pid(), tuple()) ->
+-spec start_link(atom(), ssl:host(), inet:port_number(), port(), list(), pid(), tuple()) ->
 			{ok, pid()} | ignore |  {error, reason()}.
 %%
 %% Description: Creates a gen_statem process which calls Module:init/1 to
@@ -107,9 +107,11 @@ pids(_) ->
 %%====================================================================
 %% State transition handling
 %%====================================================================	     
-next_record(#state{unprocessed_handshake_events = N} = State) when N > 0 ->
-    {no_record, State#state{unprocessed_handshake_events = N-1}};
-					 
+next_record(#state{handshake_env = 
+                       #handshake_env{unprocessed_handshake_events = N} = HsEnv} 
+            = State) when N > 0 ->
+    {no_record, State#state{handshake_env = 
+                                HsEnv#handshake_env{unprocessed_handshake_events = N-1}}};
 next_record(#state{protocol_buffers =
 		       #protocol_buffers{dtls_cipher_texts = [#ssl_tls{epoch = Epoch} = CT | Rest]}
 		   = Buffers,
@@ -141,14 +143,14 @@ next_record(#state{protocol_buffers =
     next_record(State#state{protocol_buffers =
                                 Buffers#protocol_buffers{dtls_cipher_texts = Rest},
                             connection_states = ConnectionStates});
-next_record(#state{role = server,
-		   socket = {Listener, {Client, _}}} = State) -> 
+next_record(#state{static_env = #static_env{role = server,
+                                            socket = {Listener, {Client, _}}}} = State) ->
     dtls_packet_demux:active_once(Listener, Client, self()),
     {no_record, State};
-next_record(#state{role = client,
-		   socket = {_Server, Socket} = DTLSSocket,
-                   close_tag = CloseTag,
-		   transport_cb = Transport} = State) -> 
+next_record(#state{static_env = #static_env{role = client,
+                                            socket = {_Server, Socket} = DTLSSocket,
+                                            close_tag = CloseTag,
+                                            transport_cb = Transport}} = State) ->
     case dtls_socket:setopts(Transport, Socket, [{active,once}]) of
         ok ->
  	    {no_record, State};
@@ -191,7 +193,8 @@ next_event(StateName, no_record,
 	    %% TODO maybe buffer later epoch
             next_event(StateName, no_record, State, Actions); 
 	{#alert{} = Alert, State} ->
-	    {next_state, StateName, State, [{next_event, internal, Alert} | Actions]}
+            Version = State#state.connection_env#connection_env.negotiated_version,
+            handle_own_alert(Alert, Version, StateName, State)
     end;
 next_event(connection = StateName, Record,
 	   #state{connection_states = #{current_read := #{epoch := CurrentEpoch}}} = State0, Actions) ->
@@ -231,40 +234,49 @@ next_event(StateName, Record,
 	    %% TODO maybe buffer later epoch
             next_event(StateName, no_record, State0, Actions); 
 	#alert{} = Alert ->
-	    {next_state, StateName, State0, [{next_event, internal, Alert} | Actions]}
+	    Version = State0#state.connection_env#connection_env.negotiated_version,
+            handle_own_alert(Alert, Version, StateName, State0)
     end.
 
-handle_common_event(internal, #alert{} = Alert, StateName, 
-		    #state{negotiated_version = Version} = State) ->
-    handle_own_alert(Alert, Version, StateName, State);
+%%% DTLS record protocol level application data messages 
+
+handle_protocol_record(#ssl_tls{type = ?APPLICATION_DATA, fragment = Data}, StateName0, State0) ->
+    case ssl_connection:read_application_data(Data, State0) of
+	{stop, _, _} = Stop->
+            Stop;
+	{Record, State1} ->
+            {next_state, StateName, State, Actions} = next_event(StateName0, Record, State1), 
+            ssl_connection:hibernate_after(StateName, State, Actions)
+    end;
 %%% DTLS record protocol level handshake messages 
-handle_common_event(internal, #ssl_tls{type = ?HANDSHAKE,
+handle_protocol_record(#ssl_tls{type = ?HANDSHAKE,
 				       fragment = Data}, 
 		    StateName, 
-		    #state{protocol_buffers = Buffers0,
-			   negotiated_version = Version} = State0) ->
+                       #state{protocol_buffers = Buffers0,
+                              connection_env = #connection_env{negotiated_version = Version},
+                              ssl_options = Options} = State) ->
     try
-	case dtls_handshake:get_dtls_handshake(Version, Data, Buffers0) of
+	case dtls_handshake:get_dtls_handshake(Version, Data, Buffers0, Options) of
 	    {[], Buffers} ->
-		next_event(StateName, no_record, State0#state{protocol_buffers = Buffers});
+		next_event(StateName, no_record, State#state{protocol_buffers = Buffers});
 	    {Packets, Buffers} ->
-		State = State0#state{protocol_buffers = Buffers},
+		HsEnv = State#state.handshake_env,
 		Events = dtls_handshake_events(Packets),
                 {next_state, StateName, 
-                 State#state{unprocessed_handshake_events = unprocessed_events(Events)}, Events}
+                 State#state{protocol_buffers = Buffers,
+                             handshake_env = 
+                                 HsEnv#handshake_env{unprocessed_handshake_events 
+                                                     = unprocessed_events(Events)}}, Events}
 	end
     catch throw:#alert{} = Alert ->
-	    handle_own_alert(Alert, Version, StateName, State0)
+	    handle_own_alert(Alert, Version, StateName, State)
     end;
-%%% DTLS record protocol level application data messages 
-handle_common_event(internal, #ssl_tls{type = ?APPLICATION_DATA, fragment = Data}, StateName, State) ->
-    {next_state, StateName, State, [{next_event, internal, {application_data, Data}}]};
 %%% DTLS record protocol level change cipher messages
-handle_common_event(internal, #ssl_tls{type = ?CHANGE_CIPHER_SPEC, fragment = Data}, StateName, State) ->
+handle_protocol_record(#ssl_tls{type = ?CHANGE_CIPHER_SPEC, fragment = Data}, StateName, State) ->
     {next_state, StateName, State, [{next_event, internal, #change_cipher_spec{type = Data}}]};
 %%% DTLS record protocol level Alert messages
-handle_common_event(internal, #ssl_tls{type = ?ALERT, fragment = EncAlerts}, StateName,
-		    #state{negotiated_version = Version} = State) ->
+handle_protocol_record(#ssl_tls{type = ?ALERT, fragment = EncAlerts}, StateName,
+                       #state{connection_env = #connection_env{negotiated_version = Version}} = State) ->
     case decode_alerts(EncAlerts) of
 	Alerts = [_|_] ->
 	    handle_alerts(Alerts,  {next_state, StateName, State});
@@ -272,18 +284,20 @@ handle_common_event(internal, #ssl_tls{type = ?ALERT, fragment = EncAlerts}, Sta
 	    handle_own_alert(Alert, Version, StateName, State)
     end;
 %% Ignore unknown TLS record level protocol messages
-handle_common_event(internal, #ssl_tls{type = _Unknown}, StateName, State) ->
-    {next_state, StateName, State}.
+handle_protocol_record(#ssl_tls{type = _Unknown}, StateName, State) ->
+    {next_state, StateName, State, []}.
 
 %%====================================================================
 %% Handshake handling
 %%====================================================================	     
 
-renegotiate(#state{role = client} = State, Actions) ->
+renegotiate(#state{static_env = #static_env{role = client}} = State, Actions) ->
     %% Handle same way as if server requested
     %% the renegotiation
-    next_event(connection, no_record, State, [{next_event, internal, #hello_request{}} | Actions]);
-renegotiate(#state{role = server} = State0, Actions) ->
+    {next_state, connection, State,
+     [{next_event, internal, #hello_request{}} | Actions]};
+
+renegotiate(#state{static_env = #static_env{role = server}} = State0, Actions) ->
     HelloRequest = ssl_handshake:hello_request(),
     State1 = prepare_flight(State0),
     {State, MoreActions} = send_handshake(HelloRequest, State1),
@@ -293,42 +307,51 @@ send_handshake(Handshake, #state{connection_states = ConnectionStates} = State)
     #{epoch := Epoch} = ssl_record:current_connection_state(ConnectionStates, write),
     send_handshake_flight(queue_handshake(Handshake, State), Epoch).
 
-queue_handshake(Handshake0, #state{tls_handshake_history = Hist0, 
-				   negotiated_version = Version,
+queue_handshake(Handshake0, #state{handshake_env = #handshake_env{tls_handshake_history = Hist0} = HsEnv, 
+                                   connection_env = #connection_env{negotiated_version = Version},
 				   flight_buffer = #{handshakes := HsBuffer0,
 						     change_cipher_spec := undefined,
-						     next_sequence := Seq} = Flight0} = State) ->
+						     next_sequence := Seq} = Flight0,
+                                   ssl_options = SslOpts} = State) ->
     Handshake = dtls_handshake:encode_handshake(Handshake0, Version, Seq),
     Hist = update_handshake_history(Handshake0, Handshake, Hist0),
+    ssl_logger:debug(SslOpts#ssl_options.log_level, outbound, 'handshake', Handshake0),
+
     State#state{flight_buffer = Flight0#{handshakes => [Handshake | HsBuffer0],
 					 next_sequence => Seq +1},
-		tls_handshake_history = Hist};
+	handshake_env = HsEnv#handshake_env{tls_handshake_history = Hist}};
 
-queue_handshake(Handshake0, #state{tls_handshake_history = Hist0, 
-				   negotiated_version = Version,
+queue_handshake(Handshake0, #state{handshake_env = #handshake_env{tls_handshake_history = Hist0} = HsEnv, 
+                                   connection_env = #connection_env{negotiated_version = Version},
 				   flight_buffer = #{handshakes_after_change_cipher_spec := Buffer0,
-						     next_sequence := Seq} = Flight0} = State) ->
+						     next_sequence := Seq} = Flight0,
+                                   ssl_options = SslOpts} = State) ->
     Handshake = dtls_handshake:encode_handshake(Handshake0, Version, Seq),
     Hist = update_handshake_history(Handshake0, Handshake, Hist0),
+    ssl_logger:debug(SslOpts#ssl_options.log_level, outbound, 'handshake', Handshake0),
+
     State#state{flight_buffer = Flight0#{handshakes_after_change_cipher_spec => [Handshake | Buffer0],
 					 next_sequence => Seq +1},
-		tls_handshake_history = Hist}.
+                handshake_env = HsEnv#handshake_env{tls_handshake_history = Hist}}.
 
 queue_change_cipher(ChangeCipher, #state{flight_buffer = Flight,
 					 connection_states = ConnectionStates0} = State) -> 
     ConnectionStates = 
-	dtls_record:next_epoch(ConnectionStates0, write), 
+	dtls_record:next_epoch(ConnectionStates0, write),
     State#state{flight_buffer = Flight#{change_cipher_spec => ChangeCipher},
 		connection_states = ConnectionStates}.
 
 reinit(State) ->
     %% To be API compatible with TLS NOOP here
     reinit_handshake_data(State).
-reinit_handshake_data(#state{protocol_buffers = Buffers} = State) ->
-    State#state{premaster_secret = undefined,
-		public_key_info = undefined,
-                tls_handshake_history = ssl_handshake:init_handshake_history(),
-                flight_state = {retransmit, ?INITIAL_RETRANSMIT_TIMEOUT},
+reinit_handshake_data(#state{static_env = #static_env{data_tag = DataTag},
+                             protocol_buffers = Buffers,
+                             protocol_specific = PS,
+                             handshake_env = HsEnv} = State) ->
+    State#state{handshake_env = HsEnv#handshake_env{tls_handshake_history = ssl_handshake:init_handshake_history(),
+                                                    public_key_info = undefined,
+                                                    premaster_secret = undefined},
+                protocol_specific = PS#{flight_state => initial_flight_state(DataTag)},
 		flight_buffer = new_flight(),
                 protocol_buffers =
 		    Buffers#protocol_buffers{
@@ -337,8 +360,8 @@ reinit_handshake_data(#state{protocol_buffers = Buffers} = State) ->
 		      dtls_handshake_later_fragments = []
 		     }}.
 
-select_sni_extension(#client_hello{extensions = HelloExtensions}) ->
-    HelloExtensions#hello_extensions.sni;
+select_sni_extension(#client_hello{extensions = #{sni := SNI}}) ->
+    SNI;
 select_sni_extension(_) ->
     undefined.
 
@@ -352,13 +375,16 @@ empty_connection_state(ConnectionEnd, BeastMitigation) ->
 encode_alert(#alert{} = Alert, Version, ConnectionStates) ->
     dtls_record:encode_alert_record(Alert, Version, ConnectionStates).
 
-send_alert(Alert, #state{negotiated_version = Version,
-			 socket = Socket,
-			 transport_cb = Transport,
-			 connection_states = ConnectionStates0} = State0) ->
+send_alert(Alert, #state{static_env = #static_env{socket = Socket,
+                                                  transport_cb = Transport},
+
+                         connection_env = #connection_env{negotiated_version = Version},
+			 connection_states = ConnectionStates0,
+                         ssl_options = SslOpts} = State0) ->
     {BinMsg, ConnectionStates} =
 	encode_alert(Alert, Version, ConnectionStates0),
     send(Transport, Socket, BinMsg),
+    ssl_logger:debug(SslOpts#ssl_options.log_level, outbound, 'record', BinMsg),
     State0#state{connection_states = ConnectionStates}.
 
 send_alert_in_connection(Alert, State) ->
@@ -378,16 +404,13 @@ protocol_name() ->
 %% Data handling
 %%====================================================================	 
 
-encode_data(Data, Version, ConnectionStates0)->
-    dtls_record:encode_data(Data, Version, ConnectionStates0).
-
-send(Transport, {_, {{_,_}, _} = Socket}, Data) ->
-    send(Transport, Socket, Data);
-send(Transport, Socket, Data) ->
-   dtls_socket:send(Transport, Socket, Data).
+send(Transport, {Listener, Socket}, Data) when is_pid(Listener) -> % Server socket
+    dtls_socket:send(Transport, Socket, Data);
+send(Transport, Socket, Data) -> % Client socket
+    dtls_socket:send(Transport, Socket, Data).
 
-socket(Pid,  Transport, Socket, Connection, _) ->
-    dtls_socket:socket(Pid, Transport, Socket, Connection).
+socket(Pid,  Transport, Socket, _Tracker) ->
+    dtls_socket:socket(Pid, Transport, Socket, ?MODULE).
 
 setopts(Transport, Socket, Other) ->
     dtls_socket:setopts(Transport, Socket, Other).
@@ -406,42 +429,39 @@ getopts(Transport, Socket, Tag) ->
 init(enter, _, State) ->
     {keep_state, State};     
 init({call, From}, {start, Timeout}, 
-     #state{host = Host, port = Port, role = client,
+     #state{static_env = #static_env{host = Host,
+                                     port = Port,
+                                     role = client,
+                                     session_cache = Cache,
+                                     session_cache_cb = CacheCb},
+            handshake_env = #handshake_env{renegotiation = {Renegotiation, _}},
+            connection_env = CEnv,
 	    ssl_options = SslOpts,
 	    session = #session{own_certificate = Cert} = Session0,
-	    connection_states = ConnectionStates0,
-	    renegotiation = {Renegotiation, _},
-	    session_cache = Cache,
-	    session_cache_cb = CacheCb
+	    connection_states = ConnectionStates0
 	   } = State0) ->
-    Timer = ssl_connection:start_or_recv_cancel_timer(Timeout, From),
     Hello = dtls_handshake:client_hello(Host, Port, ConnectionStates0, SslOpts,
 					Cache, CacheCb, Renegotiation, Cert),
 
     Version = Hello#client_hello.client_version,
     HelloVersion = dtls_record:hello_version(Version, SslOpts#ssl_options.versions),
-    State1 = prepare_flight(State0#state{negotiated_version = Version}),
-    {State2, Actions} = send_handshake(Hello, State1#state{negotiated_version = HelloVersion}),  
-    State = State2#state{negotiated_version = Version, %% Requested version
-                         session =
-                             Session0#session{session_id = Hello#client_hello.session_id},
-                         start_or_recv_from = From,
-                         timer = Timer,
-                         flight_state = {retransmit, ?INITIAL_RETRANSMIT_TIMEOUT}
-                        },
-    next_event(hello, no_record, State, Actions);
-init({call, _} = Type, Event, #state{role = server, data_tag = udp} = State) ->
+    State1 = prepare_flight(State0#state{connection_env = CEnv#connection_env{negotiated_version = Version}}),
+    {State2, Actions} = send_handshake(Hello, State1#state{connection_env = CEnv#connection_env{negotiated_version = HelloVersion}}),  
+    State3 = State2#state{connection_env = CEnv#connection_env{negotiated_version = Version}, %% RequestedVersion
+			  session =
+			      Session0#session{session_id = Hello#client_hello.session_id},
+			  start_or_recv_from = From},
+    {Record, State} = next_record(State3),
+    next_event(hello, Record, State, [{{timeout, handshake}, Timeout, close} | Actions]);
+init({call, _} = Type, Event, #state{static_env = #static_env{role = server},
+                                     protocol_specific = PS} = State) ->
     Result = gen_handshake(?FUNCTION_NAME, Type, Event, 
-                           State#state{flight_state = {retransmit, ?INITIAL_RETRANSMIT_TIMEOUT},
-                                       protocol_specific = #{current_cookie_secret => dtls_v1:cookie_secret(), 
-                                                             previous_cookie_secret => <<>>,
-                                                             ignored_alerts => 0,
-                                                             max_ignored_alerts => 10}}),
+                           State#state{protocol_specific = PS#{current_cookie_secret => dtls_v1:cookie_secret(), 
+                                                               previous_cookie_secret => <<>>,
+                                                               ignored_alerts => 0,
+                                                               max_ignored_alerts => 10}}),
     erlang:send_after(dtls_v1:cookie_timeout(), self(), new_cookie_secret),
     Result;
-init({call, _} = Type, Event, #state{role = server} = State) ->
-    %% I.E. DTLS over sctp
-    gen_handshake(?FUNCTION_NAME, Type, Event, State#state{flight_state = reliable});
 init(Type, Event, State) ->
    gen_handshake(?FUNCTION_NAME, Type, Event, State).
 
@@ -454,8 +474,8 @@ error(enter, _, State) ->
     {keep_state, State};     
 error({call, From}, {start, _Timeout}, 
       #state{protocol_specific = #{error := Error}} = State) ->
-    ssl_connection:stop_and_reply(
-      normal, {reply, From, {error, Error}}, State);
+    {stop_and_reply, {shutdown, normal}, 
+     [{reply, From, {error, Error}}], State};
 error({call, _} = Call, Msg, State) ->
     gen_handshake(?FUNCTION_NAME, Call, Msg, State);
 error(_, _, _) ->
@@ -467,16 +487,18 @@ error(_, _, _) ->
 	    #state{}) ->
 		   gen_statem:state_function_result().
 %%--------------------------------------------------------------------
-hello(enter, _, #state{role = server} = State) ->
+hello(enter, _, #state{static_env = #static_env{role = server}} = State) ->
     {keep_state, State};     
-hello(enter, _, #state{role = client} = State0) ->
+hello(enter, _, #state{static_env = #static_env{role = client}} = State0) ->
     {State, Actions} = handle_flight_timer(State0),
     {keep_state, State, Actions}; 
 hello(internal, #client_hello{cookie = <<>>,
 			      client_version = Version} = Hello, 
-      #state{role = server,
-             transport_cb = Transport,
-             socket = Socket,
+      #state{static_env = #static_env{role = server,
+                                      transport_cb = Transport,
+                                      socket = Socket},
+             handshake_env = HsEnv,
+             connection_env = CEnv,
              protocol_specific = #{current_cookie_secret := Secret}} = State0) ->
     {ok, {IP, Port}} = dtls_socket:peername(Transport, Socket),
     Cookie = dtls_handshake:cookie(Secret, IP, Port, Hello),
@@ -487,51 +509,62 @@ hello(internal, #client_hello{cookie = <<>>,
     %% version 1.0 regardless of the version of TLS that is expected to be
     %% negotiated.
     VerifyRequest = dtls_handshake:hello_verify_request(Cookie, ?HELLO_VERIFY_REQUEST_VERSION),
-    State1 = prepare_flight(State0#state{negotiated_version = Version}),
-    {State, Actions} = send_handshake(VerifyRequest, State1),
-    next_event(?FUNCTION_NAME, no_record, 
-               State#state{tls_handshake_history = ssl_handshake:init_handshake_history()}, Actions);
-hello(internal, #hello_verify_request{cookie = Cookie}, #state{role = client,
-							       host = Host, port = Port, 
+    State1 = prepare_flight(State0#state{connection_env = CEnv#connection_env{negotiated_version = Version}}),
+    {State2, Actions} = send_handshake(VerifyRequest, State1),
+    {Record, State} = next_record(State2),
+    next_event(?FUNCTION_NAME, Record, 
+               State#state{handshake_env = HsEnv#handshake_env{
+                                             tls_handshake_history = 
+                                                 ssl_handshake:init_handshake_history()}}, 
+               Actions);
+hello(internal, #hello_verify_request{cookie = Cookie}, #state{static_env = #static_env{role = client,
+                                                                                        host = Host,
+                                                                                        port = Port,
+                                                                                        session_cache = Cache,
+                                                                                        session_cache_cb = CacheCb},
+                                                               handshake_env = #handshake_env{renegotiation = {Renegotiation, _}} = HsEnv,
+                                                               connection_env = CEnv,
 							       ssl_options = SslOpts,
 							       session = #session{own_certificate = OwnCert} 
 							       = Session0,
-							       connection_states = ConnectionStates0,
-							       renegotiation = {Renegotiation, _},
-							       session_cache = Cache,
-							       session_cache_cb = CacheCb
+							       connection_states = ConnectionStates0
 							      } = State0) ->
   
     Hello = dtls_handshake:client_hello(Host, Port, Cookie, ConnectionStates0,
 					SslOpts,
 					Cache, CacheCb, Renegotiation, OwnCert),
     Version = Hello#client_hello.client_version,
-    State1 = prepare_flight(State0#state{tls_handshake_history = ssl_handshake:init_handshake_history()}),
+    State1 = prepare_flight(State0#state{handshake_env =  
+                                             HsEnv#handshake_env{tls_handshake_history 
+                                                                 = ssl_handshake:init_handshake_history()}}),
     
     {State2, Actions} = send_handshake(Hello, State1), 
-    State = State2#state{negotiated_version = Version, %% Requested version
+    State = State2#state{connection_env = CEnv#connection_env{negotiated_version = Version}, %% Requested version
                          session =
                              Session0#session{session_id = 
                                                   Hello#client_hello.session_id}},
     next_event(?FUNCTION_NAME, no_record, State, Actions);
 hello(internal, #client_hello{extensions = Extensions} = Hello, 
       #state{ssl_options = #ssl_options{handshake = hello},
+             handshake_env = HsEnv,
              start_or_recv_from = From} = State) ->
     {next_state, user_hello, State#state{start_or_recv_from = undefined,
-                                             hello = Hello},
-     [{reply, From, {ok, ssl_connection:map_extensions(Extensions)}}]};
+                                         handshake_env = HsEnv#handshake_env{hello = Hello}},
+     [{reply, From, {ok, Extensions}}]};
 hello(internal, #server_hello{extensions = Extensions} = Hello, 
       #state{ssl_options = #ssl_options{handshake = hello},
+             handshake_env = HsEnv,
              start_or_recv_from = From} = State) ->
     {next_state, user_hello, State#state{start_or_recv_from = undefined,
-                                             hello = Hello},
-     [{reply, From, {ok, ssl_connection:map_extensions(Extensions)}}]};     
-hello(internal, #client_hello{cookie = Cookie} = Hello, 
-      #state{role = server,
-             transport_cb = Transport,
-             socket = Socket,
-             protocol_specific = #{current_cookie_secret := Secret,
-                                   previous_cookie_secret := PSecret}} = State0) ->
+                                         handshake_env = HsEnv#handshake_env{hello = Hello}},    
+     [{reply, From, {ok, Extensions}}]};     
+
+hello(internal, #client_hello{cookie = Cookie} = Hello, #state{static_env = #static_env{role = server,
+                                                                                        transport_cb = Transport,
+                                                                                        socket = Socket},
+                                                               protocol_specific = #{current_cookie_secret := Secret,
+                                                                                     previous_cookie_secret := PSecret}
+                                                              } = State0) ->
     {ok, {IP, Port}} = dtls_socket:peername(Transport, Socket),
     case dtls_handshake:cookie(Secret, IP, Port, Hello) of
 	Cookie ->
@@ -546,11 +579,12 @@ hello(internal, #client_hello{cookie = Cookie} = Hello,
             end
     end;
 hello(internal, #server_hello{} = Hello,
-      #state{connection_states = ConnectionStates0,
-	     negotiated_version = ReqVersion,
-	     role = client,
-	     renegotiation = {Renegotiation, _},
-	     ssl_options = SslOptions} = State) ->
+      #state{
+         static_env = #static_env{role = client},
+         handshake_env = #handshake_env{renegotiation = {Renegotiation, _}},
+         connection_env = #connection_env{negotiated_version = ReqVersion},
+         connection_states = ConnectionStates0,
+         ssl_options = SslOptions} = State) ->
     case dtls_handshake:hello(Hello, SslOptions, ConnectionStates0, Renegotiation) of
 	#alert{} = Alert ->
 	    handle_own_alert(Alert, ReqVersion, ?FUNCTION_NAME, State);
@@ -596,10 +630,11 @@ abbreviated(internal = Type,
     ConnectionStates1 = dtls_record:save_current_connection_state(ConnectionStates0, read),
     ConnectionStates = dtls_record:next_epoch(ConnectionStates1, read),
     gen_handshake(?FUNCTION_NAME, Type, Event, State#state{connection_states = ConnectionStates});
-abbreviated(internal = Type, #finished{} = Event, #state{connection_states = ConnectionStates} = State) ->
+abbreviated(internal = Type, #finished{} = Event, #state{connection_states = ConnectionStates,
+                                                         protocol_specific = PS} = State) ->
     gen_handshake(?FUNCTION_NAME, Type, Event, 
                   prepare_flight(State#state{connection_states = ConnectionStates,
-                                             flight_state = connection}));
+                                             protocol_specific = PS#{flight_state => connection}}));
 abbreviated(state_timeout, Event, State) ->
     handle_state_timeout(Event, ?FUNCTION_NAME, State);
 abbreviated(Type, Event, State) ->
@@ -639,10 +674,11 @@ cipher(internal = Type, #change_cipher_spec{type = <<1>>} = Event,
     ConnectionStates1 = dtls_record:save_current_connection_state(ConnectionStates0, read),
     ConnectionStates = dtls_record:next_epoch(ConnectionStates1, read),
     ssl_connection:?FUNCTION_NAME(Type, Event, State#state{connection_states = ConnectionStates}, ?MODULE);
-cipher(internal = Type, #finished{} = Event, #state{connection_states = ConnectionStates} = State) ->
+cipher(internal = Type, #finished{} = Event, #state{connection_states = ConnectionStates,
+                                                   protocol_specific = PS} = State) ->
     ssl_connection:?FUNCTION_NAME(Type, Event, 
                                   prepare_flight(State#state{connection_states = ConnectionStates,
-                                                             flight_state = connection}), 
+                                                             protocol_specific = PS#{flight_state => connection}}), 
                                   ?MODULE);
 cipher(state_timeout, Event, State) ->
     handle_state_timeout(Event, ?FUNCTION_NAME, State);
@@ -658,33 +694,45 @@ connection(enter, _, State) ->
     {keep_state, State};     
 connection(info, Event, State) ->
     gen_info(Event, ?FUNCTION_NAME, State);
-connection(internal, #hello_request{}, #state{host = Host, port = Port,
+connection(internal, #hello_request{}, #state{static_env = #static_env{host = Host,
+                                                                       port = Port,
+                                                                       data_tag = DataTag,
+                                                                       session_cache = Cache,
+                                                                       session_cache_cb = CacheCb
+                                                                      },
+                                              handshake_env = #handshake_env{ renegotiation = {Renegotiation, _}},
+                                              connection_env = CEnv,
                                               session = #session{own_certificate = Cert} = Session0,
-                                              session_cache = Cache, session_cache_cb = CacheCb,
                                               ssl_options = SslOpts,
                                               connection_states = ConnectionStates0,
-                                              renegotiation = {Renegotiation, _}} = State0) ->
+                                              protocol_specific = PS
+                                             } = State0) ->
     
     Hello = dtls_handshake:client_hello(Host, Port, ConnectionStates0, SslOpts,
 					Cache, CacheCb, Renegotiation, Cert),
     Version = Hello#client_hello.client_version,
     HelloVersion = dtls_record:hello_version(Version, SslOpts#ssl_options.versions),
     State1 = prepare_flight(State0),
-    {State, Actions} = send_handshake(Hello, State1#state{negotiated_version = HelloVersion}),
-    next_event(hello, no_record, State#state{flight_state = {retransmit, ?INITIAL_RETRANSMIT_TIMEOUT},
-                                             session = Session0#session{session_id
-                                                                        = Hello#client_hello.session_id}},
-               Actions);
-connection(internal, #client_hello{} = Hello, #state{role = server, allow_renegotiate = true} = State) ->
+    {State2, Actions} = send_handshake(Hello, State1#state{connection_env = CEnv#connection_env{negotiated_version = HelloVersion}}),
+    {Record, State} =
+	next_record(
+	  State2#state{protocol_specific = PS#{flight_state => initial_flight_state(DataTag)},
+                       session = Session0#session{session_id
+                                                  = Hello#client_hello.session_id}}),
+    next_event(hello, Record, State, Actions);
+connection(internal, #client_hello{} = Hello, #state{static_env = #static_env{role = server},
+                                                     handshake_env = #handshake_env{allow_renegotiate = true} = HsEnv} = State) ->
     %% Mitigate Computational DoS attack
     %% http://www.educatedguesswork.org/2011/10/ssltls_and_computational_dos.html
     %% http://www.thc.org/thc-ssl-dos/ Rather than disabling client
     %% initiated renegotiation we will disallow many client initiated
     %% renegotiations immediately after each other.
     erlang:send_after(?WAIT_TO_ALLOW_RENEGOTIATION, self(), allow_renegotiate),
-    {next_state, hello, State#state{allow_renegotiate = false, renegotiation = {true, peer}},
+    {next_state, hello, State#state{handshake_env = HsEnv#handshake_env{renegotiation = {true, peer},
+                                                                        allow_renegotiate = false}},
      [{next_event, internal, Hello}]};
-connection(internal, #client_hello{}, #state{role = server, allow_renegotiate = false} = State0) ->
+connection(internal, #client_hello{}, #state{static_env = #static_env{role = server},
+                                             handshake_env = #handshake_env{allow_renegotiate = false}} = State0) ->
     Alert = ?ALERT_REC(?WARNING, ?NO_RENEGOTIATION),
     State1 = send_alert(Alert, State0),
     {Record, State} = ssl_connection:prepare_connection(State1, ?MODULE),
@@ -739,39 +787,51 @@ initial_state(Role, Host, Port, Socket, {SSLOptions, SocketOptions, _}, User,
 		     end,
     
     Monitor = erlang:monitor(process, User),
-
-    #state{socket_options = SocketOptions,
+    InitStatEnv = #static_env{
+                     role = Role,
+                     transport_cb = CbModule,
+                     protocol_cb = ?MODULE,
+                     data_tag = DataTag,
+                     close_tag = CloseTag,
+                     error_tag = ErrorTag,
+                     host = Host,
+                     port = Port,
+                     socket = Socket,
+                     session_cache_cb = SessionCacheCb
+                    },
+
+    #state{static_env = InitStatEnv,
+           handshake_env = #handshake_env{
+                              tls_handshake_history = ssl_handshake:init_handshake_history(),
+                              renegotiation = {false, first},
+                              allow_renegotiate = SSLOptions#ssl_options.client_renegotiation
+                             },
+           connection_env = #connection_env{user_application = {Monitor, User}},
+           socket_options = SocketOptions,
 	   %% We do not want to save the password in the state so that
 	   %% could be written in the clear into error logs.
 	   ssl_options = SSLOptions#ssl_options{password = undefined},	   
 	   session = #session{is_resumable = new},
-	   transport_cb = CbModule,
-	   data_tag = DataTag,
-	   close_tag = CloseTag,
-	   error_tag = ErrorTag,
-	   role = Role,
-	   host = Host,
-	   port = Port,
-	   socket = Socket,
 	   connection_states = ConnectionStates,
 	   protocol_buffers = #protocol_buffers{},
-	   user_application = {Monitor, User},
-	   user_data_buffer = <<>>,
-	   session_cache_cb = SessionCacheCb,
-	   renegotiation = {false, first},
-	   allow_renegotiate = SSLOptions#ssl_options.client_renegotiation,
+	   user_data_buffer = {[],0,[]},
 	   start_or_recv_from = undefined,
-	   protocol_cb = ?MODULE,
 	   flight_buffer = new_flight(),
-           flight_state = {retransmit, ?INITIAL_RETRANSMIT_TIMEOUT}
+           protocol_specific = #{flight_state => initial_flight_state(DataTag)}
 	  }.
 
+initial_flight_state(udp)->
+    {retransmit, ?INITIAL_RETRANSMIT_TIMEOUT};
+initial_flight_state(_) ->
+    reliable.
+
 next_dtls_record(Data, StateName, #state{protocol_buffers = #protocol_buffers{
 						   dtls_record_buffer = Buf0,
-						   dtls_cipher_texts = CT0} = Buffers} = State0) ->
+						   dtls_cipher_texts = CT0} = Buffers,
+                                         ssl_options = SslOpts} = State0) ->
     case dtls_record:get_dtls_records(Data,
                                       acceptable_record_versions(StateName, State0), 
-                                      Buf0) of
+                                      Buf0, SslOpts) of
 	{Records, Buf1} ->
 	    CT1 = CT0 ++ Records,
 	    next_record(State0#state{protocol_buffers =
@@ -782,8 +842,8 @@ next_dtls_record(Data, StateName, #state{protocol_buffers = #protocol_buffers{
     end.
 
 acceptable_record_versions(hello, _) ->
-    [dtls_record:protocol_version(Vsn) || Vsn <- ?ALL_DATAGRAM_SUPPORTED_VERSIONS];
-acceptable_record_versions(_, #state{negotiated_version = Version}) ->
+    [dtls_record:protocol_version(Vsn) || Vsn <- ?ALL_AVAILABLE_DATAGRAM_VERSIONS];
+acceptable_record_versions(_, #state{connection_env = #connection_env{negotiated_version = Version}}) ->
     [Version].
 
 dtls_handshake_events(Packets) ->
@@ -802,19 +862,22 @@ decode_cipher_text(#state{protocol_buffers = #protocol_buffers{dtls_cipher_texts
 	    {Alert, State}
     end.
 
-dtls_version(hello, Version, #state{role = server} = State) ->
-    State#state{negotiated_version = Version}; %%Inital version
+dtls_version(hello, Version, #state{static_env = #static_env{role = server},
+                                    connection_env = CEnv} = State) ->
+    State#state{connection_env = CEnv#connection_env{negotiated_version = Version}}; %%Inital version
 dtls_version(_,_, State) ->
     State.
 
 handle_client_hello(#client_hello{client_version = ClientVersion} = Hello,
 		    #state{connection_states = ConnectionStates0,
-			   port = Port, session = #session{own_certificate = Cert} = Session0,
-			   renegotiation = {Renegotiation, _},
-			   session_cache = Cache,
-			   session_cache_cb = CacheCb,
-			   negotiated_protocol = CurrentProtocol,
-			   key_algorithm = KeyExAlg,
+                           static_env = #static_env{port = Port,
+                                                     session_cache = Cache,
+                                                    session_cache_cb = CacheCb},
+                           handshake_env = #handshake_env{kex_algorithm = KeyExAlg,
+                                                          renegotiation = {Renegotiation, _},
+                                                          negotiated_protocol = CurrentProtocol} = HsEnv,
+                           connection_env = CEnv,
+			   session = #session{own_certificate = Cert} = Session0,
 			   ssl_options = SslOpts} = State0) ->
     
     case dtls_handshake:hello(Hello, SslOpts, {Port, Session0, Cache, CacheCb,
@@ -829,11 +892,12 @@ handle_client_hello(#client_hello{client_version = ClientVersion} = Hello,
 		       end,
 
 	    State = prepare_flight(State0#state{connection_states = ConnectionStates,
-						negotiated_version = Version,
-						hashsign_algorithm = HashSign,
-                                                client_hello_version = ClientVersion,
-						session = Session,
-						negotiated_protocol = Protocol}),
+						connection_env = CEnv#connection_env{negotiated_version = Version},
+                                                handshake_env = HsEnv#handshake_env{
+                                                                  hashsign_algorithm = HashSign,
+                                                                  client_hello_version = ClientVersion,
+                                                                  negotiated_protocol = Protocol},
+						session = Session}),
 	    
 	    ssl_connection:hello(internal, {common_client_hello, Type, ServerHelloExt},
 				 State, ?MODULE)
@@ -842,20 +906,20 @@ handle_client_hello(#client_hello{client_version = ClientVersion} = Hello,
 
 %% raw data from socket, unpack records
 handle_info({Protocol, _, _, _, Data}, StateName,
-            #state{data_tag = Protocol} = State0) ->
+            #state{static_env = #static_env{data_tag = Protocol}} = State0) ->
     case next_dtls_record(Data, StateName, State0) of
 	{Record, State} ->
 	    next_event(StateName, Record, State);
 	#alert{} = Alert ->
 	    ssl_connection:handle_normal_shutdown(Alert, StateName, State0), 
-	    ssl_connection:stop({shutdown, own_alert}, State0)
+            {stop, {shutdown, own_alert}, State0}
     end;
 handle_info({CloseTag, Socket}, StateName,
-	    #state{socket = Socket, 
+	    #state{static_env = #static_env{socket = Socket,
+                                            close_tag = CloseTag},
+                   connection_env = #connection_env{negotiated_version = Version},
                    socket_options = #socket_options{active = Active},
-                   protocol_buffers = #protocol_buffers{dtls_cipher_texts = CTs},
-                   close_tag = CloseTag,
-		   negotiated_version = Version} = State) ->
+                   protocol_buffers = #protocol_buffers{dtls_cipher_texts = CTs}} = State) ->
     %% Note that as of DTLS 1.2 (TLS 1.1),
     %% failure to properly close a connection no longer requires that a
     %% session not be resumed.	This is a change from DTLS 1.0 to conform
@@ -873,7 +937,7 @@ handle_info({CloseTag, Socket}, StateName,
                     ok
             end,
             ssl_connection:handle_normal_shutdown(?ALERT_REC(?FATAL, ?CLOSE_NOTIFY), StateName, State),
-            ssl_connection:stop({shutdown, transport_closed}, State);
+            {stop, {shutdown, transport_closed}, State};
         true ->
             %% Fixes non-delivery of final DTLS record in {active, once}.
             %% Basically allows the application the opportunity to set {active, once} again
@@ -891,9 +955,10 @@ handle_info(Msg, StateName, State) ->
     ssl_connection:StateName(info, Msg, State, ?MODULE).
 
 handle_state_timeout(flight_retransmission_timeout, StateName,
-                     #state{flight_state = {retransmit, NextTimeout}} = State0) ->
-    {State1, Actions0} = send_handshake_flight(State0#state{flight_state = {retransmit, NextTimeout}}, 
-                                              retransmit_epoch(StateName, State0)),
+                     #state{protocol_specific = 
+                                #{flight_state := {retransmit, _NextTimeout}}} = State0) ->
+    {State1, Actions0} = send_handshake_flight(State0, 
+                                               retransmit_epoch(StateName, State0)),
     {next_state, StateName, State, Actions} = next_event(StateName, no_record, State1, Actions0),
     %% This will reset the retransmission timer by repeating the enter state event
     {repeat_state, State, Actions}.
@@ -907,12 +972,12 @@ handle_alerts([Alert | Alerts], {next_state, StateName, State}) ->
 handle_alerts([Alert | Alerts], {next_state, StateName, State, _Actions}) ->
      handle_alerts(Alerts, ssl_connection:handle_alert(Alert, StateName, State)).
 
-handle_own_alert(Alert, Version, StateName, #state{data_tag = udp,
-                                                   role = Role,
+handle_own_alert(Alert, Version, StateName, #state{static_env = #static_env{data_tag = udp,
+                                                                            role = Role},
                                                    ssl_options = Options} = State0) ->
     case ignore_alert(Alert, State0) of
         {true, State} ->
-            log_ignore_alert(Options#ssl_options.log_alert, StateName, Alert, Role),
+            log_ignore_alert(Options#ssl_options.log_level, StateName, Alert, Role),
             {next_state, StateName, State};
         {false, State} ->
             ssl_connection:handle_own_alert(Alert, Version, StateName, State)
@@ -933,7 +998,7 @@ decode_alerts(Bin) ->
     ssl_alert:decode(Bin).
 
 gen_handshake(StateName, Type, Event, 
-	      #state{negotiated_version = Version} = State) ->
+	      #state{connection_env = #connection_env{negotiated_version = Version}} = State) ->
     try ssl_connection:StateName(Type, Event, State, ?MODULE) of
 	Result ->
 	    Result
@@ -944,7 +1009,7 @@ gen_handshake(StateName, Type, Event,
 					    Version, StateName, State)  
     end.
 
-gen_info(Event, connection = StateName,  #state{negotiated_version = Version} = State) ->
+gen_info(Event, connection = StateName,  #state{connection_env = #connection_env{negotiated_version = Version}} = State) ->
     try handle_info(Event, StateName, State) of
 	Result ->
 	    Result
@@ -955,7 +1020,7 @@ gen_info(Event, connection = StateName,  #state{negotiated_version = Version} =
 					    Version, StateName, State)  
     end;
 
-gen_info(Event, StateName, #state{negotiated_version = Version} = State) ->
+gen_info(Event, StateName, #state{connection_env = #connection_env{negotiated_version = Version}} = State) ->
     try handle_info(Event, StateName, State) of
 	Result ->
 	    Result
@@ -998,58 +1063,67 @@ next_flight(Flight) ->
 	    change_cipher_spec => undefined,
 	    handshakes_after_change_cipher_spec => []}.
        
-handle_flight_timer(#state{data_tag = udp,
-                          flight_state = {retransmit, Timeout}} = State) ->
+handle_flight_timer(#state{static_env = #static_env{data_tag = udp},
+                           protocol_specific = #{flight_state := {retransmit, Timeout}}} = State) ->
     start_retransmision_timer(Timeout, State);
-handle_flight_timer(#state{data_tag = udp,
-		    flight_state = connection} = State) ->
+handle_flight_timer(#state{static_env = #static_env{data_tag = udp},
+                           protocol_specific = #{flight_state := connection}} = State) ->
     {State, []};
-handle_flight_timer(State) ->
+handle_flight_timer(#state{protocol_specific = #{flight_state := reliable}} = State) ->
     %% No retransmision needed i.e DTLS over SCTP
-    {State#state{flight_state = reliable}, []}.
+    {State, []}.
 
-start_retransmision_timer(Timeout, State) ->
-    {State#state{flight_state = {retransmit, new_timeout(Timeout)}}, 
+start_retransmision_timer(Timeout, #state{protocol_specific = PS} = State) ->
+    {State#state{protocol_specific = PS#{flight_state => {retransmit, new_timeout(Timeout)}}}, 
      [{state_timeout, Timeout, flight_retransmission_timeout}]}.
 
-new_timeout(N) when N =< 30 -> 
+new_timeout(N) when N =< 30000 ->
     N * 2;
 new_timeout(_) -> 
-    60.
+    60000.
 
-send_handshake_flight(#state{socket = Socket,
-			     transport_cb = Transport,
-			     flight_buffer = #{handshakes := Flight,
+send_handshake_flight(#state{static_env = #static_env{socket = Socket,
+                                                      transport_cb = Transport},
+                             connection_env = #connection_env{negotiated_version = Version},
+                             flight_buffer = #{handshakes := Flight,
 					       change_cipher_spec := undefined},
-			     negotiated_version = Version,
-			     connection_states = ConnectionStates0} = State0, Epoch) ->
+			     connection_states = ConnectionStates0,
+                             ssl_options = #ssl_options{log_level = LogLevel}} = State0,
+                      Epoch) ->
     %% TODO remove hardcoded Max size
     {Encoded, ConnectionStates} =
 	encode_handshake_flight(lists:reverse(Flight), Version, 1400, Epoch, ConnectionStates0),
-    send(Transport, Socket, Encoded), 
+    send(Transport, Socket, Encoded),
+    ssl_logger:debug(LogLevel, outbound, 'record', Encoded),
    {State0#state{connection_states = ConnectionStates}, []};
 
-send_handshake_flight(#state{socket = Socket,
-			     transport_cb = Transport,
+send_handshake_flight(#state{static_env = #static_env{socket = Socket,
+                                                      transport_cb = Transport},
+                             connection_env = #connection_env{negotiated_version = Version},
 			     flight_buffer = #{handshakes := [_|_] = Flight0,
 					       change_cipher_spec := ChangeCipher,
 					       handshakes_after_change_cipher_spec := []},
-			     negotiated_version = Version,
-			     connection_states = ConnectionStates0} = State0, Epoch) ->      
+			     connection_states = ConnectionStates0,
+                             ssl_options = #ssl_options{log_level = LogLevel}} = State0,
+                      Epoch) ->
     {HsBefore, ConnectionStates1} =
 	encode_handshake_flight(lists:reverse(Flight0), Version, 1400, Epoch, ConnectionStates0),
     {EncChangeCipher, ConnectionStates} = encode_change_cipher(ChangeCipher, Version, Epoch, ConnectionStates1),
 
     send(Transport, Socket, [HsBefore, EncChangeCipher]),
+    ssl_logger:debug(LogLevel, outbound, 'record', [HsBefore]),
+    ssl_logger:debug(LogLevel, outbound, 'record', [EncChangeCipher]),
     {State0#state{connection_states = ConnectionStates}, []};
 
-send_handshake_flight(#state{socket = Socket,
-			     transport_cb = Transport,
+send_handshake_flight(#state{static_env = #static_env{socket = Socket,
+                                                      transport_cb = Transport},
+                             connection_env = #connection_env{negotiated_version = Version},
 			     flight_buffer = #{handshakes := [_|_] = Flight0,
 					       change_cipher_spec := ChangeCipher,
 					       handshakes_after_change_cipher_spec := Flight1},
-			     negotiated_version = Version,
-			     connection_states = ConnectionStates0} = State0, Epoch) ->      
+			     connection_states = ConnectionStates0,
+                             ssl_options = #ssl_options{log_level = LogLevel}} = State0,
+                      Epoch) ->
     {HsBefore, ConnectionStates1} =
 	encode_handshake_flight(lists:reverse(Flight0), Version, 1400, Epoch-1, ConnectionStates0),
     {EncChangeCipher, ConnectionStates2} = 
@@ -1057,20 +1131,27 @@ send_handshake_flight(#state{socket = Socket,
     {HsAfter, ConnectionStates} =
 	encode_handshake_flight(lists:reverse(Flight1), Version, 1400, Epoch, ConnectionStates2),
     send(Transport, Socket, [HsBefore, EncChangeCipher, HsAfter]),
+    ssl_logger:debug(LogLevel, outbound, 'record', [HsBefore]),
+    ssl_logger:debug(LogLevel, outbound, 'record', [EncChangeCipher]),
+    ssl_logger:debug(LogLevel, outbound, 'record', [HsAfter]),
     {State0#state{connection_states = ConnectionStates}, []};
 
-send_handshake_flight(#state{socket = Socket,
-			     transport_cb = Transport,
+send_handshake_flight(#state{static_env = #static_env{socket = Socket,
+                                                      transport_cb = Transport},
+                             connection_env = #connection_env{negotiated_version = Version},
 			     flight_buffer = #{handshakes := [],
 					       change_cipher_spec := ChangeCipher,
 					       handshakes_after_change_cipher_spec := Flight1},
-			     negotiated_version = Version,
-			     connection_states = ConnectionStates0} = State0, Epoch) ->
+			     connection_states = ConnectionStates0,
+                             ssl_options = #ssl_options{log_level = LogLevel}} = State0,
+                      Epoch) ->
     {EncChangeCipher, ConnectionStates1} = 
 	encode_change_cipher(ChangeCipher, Version, Epoch-1, ConnectionStates0),
     {HsAfter, ConnectionStates} =
 	encode_handshake_flight(lists:reverse(Flight1), Version, 1400, Epoch, ConnectionStates1),
     send(Transport, Socket, [EncChangeCipher, HsAfter]),
+    ssl_logger:debug(LogLevel, outbound, 'record', [EncChangeCipher]),
+    ssl_logger:debug(LogLevel, outbound, 'record', [HsAfter]),
     {State0#state{connection_states = ConnectionStates}, []}.
 
 retransmit_epoch(_StateName, #state{connection_states = ConnectionStates}) ->
@@ -1109,31 +1190,33 @@ is_ignore_alert(#alert{description = ?ILLEGAL_PARAMETER}) ->
 is_ignore_alert(_) ->
     false.
 
-log_ignore_alert(true, StateName, Alert, Role) ->
+log_ignore_alert(debug, StateName, Alert, Role) ->
     Txt = ssl_alert:alert_txt(Alert),
-    error_logger:format("DTLS over UDP ~p: In state ~p ignored to send ALERT ~s as DoS-attack mitigation \n", 
-                        [Role, StateName, Txt]);
-log_ignore_alert(false, _, _,_) ->
+    ?LOG_ERROR("DTLS over UDP ~p: In state ~p ignored to send ALERT ~s as DoS-attack mitigation \n",
+                 [Role, StateName, Txt]);
+log_ignore_alert(_, _, _, _) ->
     ok.
 
 send_application_data(Data, From, _StateName,
-                      #state{socket = Socket,
-                             negotiated_version = Version,
-                             protocol_cb = Connection,
-                             transport_cb = Transport,
+                      #state{static_env = #static_env{socket = Socket,
+                                                      transport_cb = Transport},
+                             connection_env = #connection_env{negotiated_version = Version},
+                             handshake_env = HsEnv,
                              connection_states = ConnectionStates0,
-                             ssl_options = #ssl_options{renegotiate_at = RenegotiateAt}} = State0) ->
+                             ssl_options = #ssl_options{renegotiate_at = RenegotiateAt,
+                                                        log_level = LogLevel}} = State0) ->
        
     case time_to_renegotiate(Data, ConnectionStates0, RenegotiateAt) of
 	true ->
-	    renegotiate(State0#state{renegotiation = {true, internal}}, 
+	    renegotiate(State0#state{handshake_env = HsEnv#handshake_env{renegotiation = {true, internal}}}, 
                         [{next_event, {call, From}, {application_data, Data}}]);
 	false ->
 	    {Msgs, ConnectionStates} =
-                Connection:encode_data(Data, Version, ConnectionStates0),
+                dtls_record:encode_data(Data, Version, ConnectionStates0),
             State = State0#state{connection_states = ConnectionStates},
-	    case Connection:send(Transport, Socket, Msgs) of
+	    case send(Transport, Socket, Msgs) of
                 ok ->
+                    ssl_logger:debug(LogLevel, outbound, 'record', Msgs),
                     ssl_connection:hibernate_after(connection, State, [{reply, From, ok}]);
                 Result ->
                     ssl_connection:hibernate_after(connection, State, [{reply, From, Result}])
@@ -1154,3 +1237,4 @@ is_time_to_renegotiate(N, M) when N < M->
     false;
 is_time_to_renegotiate(_,_) ->
     true.
+
diff --git a/lib/ssl/src/dtls_handshake.erl b/lib/ssl/src/dtls_handshake.erl
index 3f70eaec8a..46e8348ce0 100644
--- a/lib/ssl/src/dtls_handshake.erl
+++ b/lib/ssl/src/dtls_handshake.erl
@@ -37,7 +37,7 @@
 -export([fragment_handshake/2, encode_handshake/3]).
 
 %% Handshake decodeing
--export([get_dtls_handshake/3]). 
+-export([get_dtls_handshake/4]).
 
 -type dtls_handshake() :: #client_hello{} | #hello_verify_request{} | 
 			  ssl_handshake:ssl_handshake().
@@ -46,7 +46,7 @@
 %% Handshake handling
 %%====================================================================
 %%--------------------------------------------------------------------
--spec client_hello(host(), inet:port_number(), ssl_record:connection_states(),
+-spec client_hello(ssl:host(), inet:port_number(), ssl_record:connection_states(),
 		   #ssl_options{}, integer(), atom(), boolean(), der_cert()) ->
 			  #client_hello{}.
 %%
@@ -59,7 +59,7 @@ client_hello(Host, Port, ConnectionStates, SslOpts,
 		 Cache, CacheCb, Renegotiation, OwnCert).
 
 %%--------------------------------------------------------------------
--spec client_hello(host(), inet:port_number(), term(), ssl_record:connection_states(),
+-spec client_hello(ssl:host(), inet:port_number(), term(), ssl_record:connection_states(),
 		   #ssl_options{}, integer(), atom(), boolean(), der_cert()) ->
 			  #client_hello{}.
 %%
@@ -79,7 +79,7 @@ client_hello(Host, Port, Cookie, ConnectionStates,
 
     Extensions = ssl_handshake:client_hello_extensions(TLSVersion, CipherSuites,
                                                        SslOpts, ConnectionStates, 
-                                                       Renegotiation),
+                                                       Renegotiation, undefined),
     Id = ssl_session:client_id({Host, Port, SslOpts}, Cache, CacheCb, OwnCert),
 
     #client_hello{session_id = Id,
@@ -123,7 +123,7 @@ cookie(Key, Address, Port, #client_hello{client_version = {Major, Minor},
 		  Random, SessionId, CipherSuites, CompressionMethods],
     crypto:hmac(sha, Key, CookieData).
 %%--------------------------------------------------------------------
--spec hello_verify_request(binary(),  dtls_record:dtls_version()) -> #hello_verify_request{}.
+-spec hello_verify_request(binary(),  ssl_record:ssl_version()) -> #hello_verify_request{}.
 %%
 %% Description: Creates a hello verify request message sent by server to
 %% verify client
@@ -151,15 +151,15 @@ encode_handshake(Handshake, Version, Seq) ->
 %%--------------------------------------------------------------------
 
 %%--------------------------------------------------------------------
--spec get_dtls_handshake(dtls_record:dtls_version(), binary(), #protocol_buffers{}) ->
+-spec get_dtls_handshake(ssl_record:ssl_version(), binary(), #protocol_buffers{}, #ssl_options{}) ->
                                 {[dtls_handshake()], #protocol_buffers{}}.                
 %%
 %% Description:  Given buffered and new data from dtls_record, collects
 %% and returns it as a list of handshake messages, also returns 
 %% possible leftover data in the new "protocol_buffers".
 %%--------------------------------------------------------------------
-get_dtls_handshake(Version, Fragment, ProtocolBuffers) ->
-    handle_fragments(Version, Fragment, ProtocolBuffers, []).
+get_dtls_handshake(Version, Fragment, ProtocolBuffers, Options) ->
+    handle_fragments(Version, Fragment, ProtocolBuffers, Options, []).
 
 %%--------------------------------------------------------------------
 %%% Internal functions
@@ -169,10 +169,7 @@ handle_client_hello(Version,
                                   cipher_suites = CipherSuites,
                                   compression_methods = Compressions,
                                   random = Random,
-                                  extensions =
-                                      #hello_extensions{elliptic_curves = Curves,
-                                                        signature_algs = ClientHashSigns} 
-                                  = HelloExt},
+                                  extensions = HelloExt},
 		    #ssl_options{versions = Versions,
 				 signature_algs = SupportedHashSigns,
                                  eccs = SupportedECCs,
@@ -181,6 +178,8 @@ handle_client_hello(Version,
                     Renegotiation) ->
     case dtls_record:is_acceptable_version(Version, Versions) of
 	true ->
+            Curves = maps:get(elliptic_curves, HelloExt, undefined),
+            ClientHashSigns = maps:get(signature_algs, HelloExt, undefined),
 	    TLSVersion = dtls_v1:corresponding_tls_version(Version),
 	    AvailableHashSigns = ssl_handshake:available_signature_algs(
 				   ClientHashSigns, SupportedHashSigns, Cert,TLSVersion),
@@ -195,7 +194,7 @@ handle_client_hello(Version,
 		    ?ALERT_REC(?FATAL, ?INSUFFICIENT_SECURITY);
 		_ ->
 		    #{key_exchange := KeyExAlg} = ssl_cipher_format:suite_definition(CipherSuite),
-		    case ssl_handshake:select_hashsign(ClientHashSigns, Cert, KeyExAlg, 
+		    case ssl_handshake:select_hashsign({ClientHashSigns, undefined}, Cert, KeyExAlg,
 						       SupportedHashSigns, TLSVersion) of
 			#alert{} = Alert ->
 			    Alert;
@@ -215,8 +214,6 @@ handle_client_hello_extensions(Version, Type, Random, CipherSuites,
 						     HelloExt, dtls_v1:corresponding_tls_version(Version),
 						     SslOpts, Session0, 
                                                      ConnectionStates0, Renegotiation) of
-	#alert{} = Alert ->
-	    Alert;
 	{Session, ConnectionStates, Protocol, ServerHelloExt} ->
 	    {Version, {Type, Session}, ConnectionStates, Protocol, ServerHelloExt, HashSign}
     catch throw:Alert ->
@@ -225,17 +222,16 @@ handle_client_hello_extensions(Version, Type, Random, CipherSuites,
 
 handle_server_hello_extensions(Version, SessionId, Random, CipherSuite,
 			       Compression, HelloExt, SslOpt, ConnectionStates0, Renegotiation) ->
-    case ssl_handshake:handle_server_hello_extensions(dtls_record, Random, CipherSuite,
-						      Compression, HelloExt,
-						      dtls_v1:corresponding_tls_version(Version),
-						      SslOpt, ConnectionStates0, Renegotiation) of
-	#alert{} = Alert ->
-	    Alert;
+    try ssl_handshake:handle_server_hello_extensions(dtls_record, Random, CipherSuite,
+                                                     Compression, HelloExt,
+                                                     dtls_v1:corresponding_tls_version(Version),
+                                                     SslOpt, ConnectionStates0, Renegotiation) of
 	{ConnectionStates, ProtoExt, Protocol} ->
 	    {Version, SessionId, ConnectionStates, ProtoExt, Protocol}
+    catch throw:Alert ->
+	    Alert
     end.
 
-
 %%--------------------------------------------------------------------
 
 enc_handshake(#hello_verify_request{protocol_version = {Major, Minor},
@@ -314,20 +310,21 @@ address_to_bin({A,B,C,D,E,F,G,H}, Port) ->
 
 %%--------------------------------------------------------------------
 
-handle_fragments(Version, FragmentData, Buffers0, Acc) ->
+handle_fragments(Version, FragmentData, Buffers0, Options, Acc) ->
     Fragments = decode_handshake_fragments(FragmentData),
-    do_handle_fragments(Version, Fragments, Buffers0, Acc).
+    do_handle_fragments(Version, Fragments, Buffers0, Options, Acc).
 
-do_handle_fragments(_, [], Buffers, Acc) ->
+do_handle_fragments(_, [], Buffers, _Options, Acc) ->
     {lists:reverse(Acc), Buffers};
-do_handle_fragments(Version, [Fragment | Fragments], Buffers0, Acc) ->
+do_handle_fragments(Version, [Fragment | Fragments], Buffers0, Options, Acc) ->
     case reassemble(Version, Fragment, Buffers0) of
 	{more_data, Buffers} when Fragments == [] ->
 	    {lists:reverse(Acc), Buffers};
 	{more_data, Buffers} ->
-	    do_handle_fragments(Version, Fragments, Buffers, Acc);
-	{HsPacket, Buffers} ->
-	    do_handle_fragments(Version, Fragments, Buffers, [HsPacket | Acc])
+	    do_handle_fragments(Version, Fragments, Buffers, Options, Acc);
+	{{Handshake, _} = HsPacket, Buffers} ->
+            ssl_logger:debug(Options#ssl_options.log_level, inbound, 'handshake', Handshake),
+	    do_handle_fragments(Version, Fragments, Buffers, Options, [HsPacket | Acc])
     end.
 
 decode_handshake(Version, <<?BYTE(Type), Bin/binary>>) ->
@@ -335,7 +332,7 @@ decode_handshake(Version, <<?BYTE(Type), Bin/binary>>) ->
 
 decode_handshake(_, ?HELLO_REQUEST, <<>>) ->
     #hello_request{};
-decode_handshake(_Version, ?CLIENT_HELLO, <<?UINT24(_), ?UINT16(_),
+decode_handshake(Version, ?CLIENT_HELLO, <<?UINT24(_), ?UINT16(_),
 					    ?UINT24(_),  ?UINT24(_), 
 					    ?BYTE(Major), ?BYTE(Minor), Random:32/binary,
 					    ?BYTE(SID_length), Session_ID:SID_length/binary,
@@ -343,8 +340,10 @@ decode_handshake(_Version, ?CLIENT_HELLO, <<?UINT24(_), ?UINT16(_),
 					    ?UINT16(Cs_length), CipherSuites:Cs_length/binary,
 					    ?BYTE(Cm_length), Comp_methods:Cm_length/binary,
 					    Extensions/binary>>) ->
-    
-    DecodedExtensions = ssl_handshake:decode_hello_extensions({client, Extensions}),
+    TLSVersion = dtls_v1:corresponding_tls_version(Version),
+    LegacyVersion = dtls_v1:corresponding_tls_version({Major, Minor}),
+    Exts = ssl_handshake:decode_vector(Extensions),
+    DecodedExtensions = ssl_handshake:decode_hello_extensions(Exts, TLSVersion, LegacyVersion, client),
 
     #client_hello{
        client_version = {Major,Minor},
@@ -365,9 +364,9 @@ decode_handshake(_Version, ?HELLO_VERIFY_REQUEST, <<?UINT24(_), ?UINT16(_),
 decode_handshake(Version, Tag,  <<?UINT24(_), ?UINT16(_),
 				  ?UINT24(_),  ?UINT24(_), Msg/binary>>) -> 
     %% DTLS specifics stripped
-    decode_tls_thandshake(Version, Tag, Msg).
+    decode_tls_handshake(Version, Tag, Msg).
 
-decode_tls_thandshake(Version, Tag, Msg) ->
+decode_tls_handshake(Version, Tag, Msg) ->
     TLSVersion = dtls_v1:corresponding_tls_version(Version),
     ssl_handshake:decode_handshake(TLSVersion, Tag, Msg).
 
diff --git a/lib/ssl/src/dtls_handshake.hrl b/lib/ssl/src/dtls_handshake.hrl
index 50e92027d2..de2be1daeb 100644
--- a/lib/ssl/src/dtls_handshake.hrl
+++ b/lib/ssl/src/dtls_handshake.hrl
@@ -26,22 +26,13 @@
 -ifndef(dtls_handshake).
 -define(dtls_handshake, true).
 
+-include("tls_handshake.hrl"). %% Common TLS and DTLS records and Constantes
 -include("ssl_handshake.hrl"). %% Common TLS and DTLS records and Constantes
+-include("ssl_api.hrl").
 
 -define(HELLO_VERIFY_REQUEST, 3).
 -define(HELLO_VERIFY_REQUEST_VERSION, {254, 255}).
 
--record(client_hello, {
-	  client_version,
-	  random,             
-	  session_id,          % opaque SessionID<0..32>
-	  cookie,              % opaque<2..2^16-1>
-	  cipher_suites,       % cipher_suites<2..2^16-1>
-	  compression_methods, % compression_methods<1..2^8-1>,
-	  %% Extensions
-	  extensions
-	 }).
-
 -record(hello_verify_request, {
 	  protocol_version,
 	  cookie
@@ -56,4 +47,11 @@
 	  fragment
 	 }).
 
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% RFC 7764  Datagram Transport Layer Security (DTLS) Extension to Establish Keys
+%% for the Secure Real-time Transport Protocol (SRTP)
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% Not supported
+-define(USE_SRTP, 14).
+
 -endif. % -ifdef(dtls_handshake).
diff --git a/lib/ssl/src/dtls_packet_demux.erl b/lib/ssl/src/dtls_packet_demux.erl
index 1497c77cf3..2e9184b7ac 100644
--- a/lib/ssl/src/dtls_packet_demux.erl
+++ b/lib/ssl/src/dtls_packet_demux.erl
@@ -24,6 +24,7 @@
 -behaviour(gen_server).
 
 -include("ssl_internal.hrl").
+-include_lib("kernel/include/logger.hrl").
 
 %% API
 -export([start_link/5, active_once/3, accept/2, sockname/1, close/1,
@@ -144,13 +145,13 @@ handle_info({Transport, Socket, IP, InPortNo, _} = Msg, #state{listener = Socket
 %% UDP socket does not have a connection and should not receive an econnreset
 %% This does however happens on some windows versions. Just ignoring it
 %% appears to make things work as expected! 
-handle_info({Error, Socket, econnreset = Error}, #state{listener = Socket, transport = {_,_,_, udp_error}} = State) ->
+handle_info({udp_error, Socket, econnreset = Error}, #state{listener = Socket, transport = {_,_,_, udp_error}} = State) ->
     Report = io_lib:format("Ignore SSL UDP Listener: Socket error: ~p ~n", [Error]),
-    error_logger:info_report(Report),
+    ?LOG_NOTICE(Report),
     {noreply, State};
-handle_info({Error, Socket, Error}, #state{listener = Socket, transport = {_,_,_, Error}} = State) ->
+handle_info({ErrorTag, Socket, Error}, #state{listener = Socket, transport = {_,_,_, ErrorTag}} = State) ->
     Report = io_lib:format("SSL Packet muliplxer shutdown: Socket error: ~p ~n", [Error]),
-    error_logger:info_report(Report),
+    ?LOG_NOTICE(Report),
     {noreply, State#state{close=true}};
 
 handle_info({'DOWN', _, process, Pid, _}, #state{clients = Clients,
@@ -202,9 +203,9 @@ dispatch(Client, Msg, #state{dtls_msq_queues = MsgQueues} = State) ->
 		    Pid ! Msg,
 		    State#state{dtls_msq_queues = 
 				    kv_update(Client, Queue, MsgQueues)};
-		{{value, _}, Queue} -> 
+		{{value, _UDP}, _Queue} ->
 		    State#state{dtls_msq_queues = 
-				    kv_update(Client, queue:in(Msg, Queue), MsgQueues)};
+				    kv_update(Client, queue:in(Msg, Queue0), MsgQueues)};
 		{empty, Queue} ->
 		    State#state{dtls_msq_queues = 
 				    kv_update(Client, queue:in(Msg, Queue), MsgQueues)}
@@ -297,6 +298,9 @@ do_set_emulated_opts([], Opts) ->
     Opts;
 do_set_emulated_opts([{mode, Value} | Rest], Opts) ->
     do_set_emulated_opts(Rest,  Opts#socket_options{mode = Value}); 
+do_set_emulated_opts([{active, N0} | Rest], Opts=#socket_options{active = Active}) when is_integer(N0) ->
+    N = tls_socket:update_active_n(N0, Active),
+    do_set_emulated_opts(Rest,  Opts#socket_options{active = N});
 do_set_emulated_opts([{active, Value} | Rest], Opts) ->
     do_set_emulated_opts(Rest,  Opts#socket_options{active = Value}).
 
diff --git a/lib/ssl/src/dtls_record.erl b/lib/ssl/src/dtls_record.erl
index b7346d3ec8..a4846f42c5 100644
--- a/lib/ssl/src/dtls_record.erl
+++ b/lib/ssl/src/dtls_record.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2013-2018. All Rights Reserved.
+%% Copyright Ericsson AB 2013-2019. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -30,7 +30,7 @@
 -include("ssl_cipher.hrl").
 
 %% Handling of incoming data
--export([get_dtls_records/3,  init_connection_states/2, empty_connection_state/1]).
+-export([get_dtls_records/4,  init_connection_states/2, empty_connection_state/1]).
 
 -export([save_current_connection_state/2, next_epoch/2, get_connection_state_by_epoch/3, replay_detect/2,
          init_connection_state_seq/2, current_connection_state_epoch/2]).
@@ -49,9 +49,8 @@
 	 is_acceptable_version/2, hello_version/2]).
 
 
--export_type([dtls_version/0, dtls_atom_version/0]).
+-export_type([dtls_atom_version/0]).
 
--type dtls_version()       :: ssl_record:ssl_version().
 -type dtls_atom_version()  :: dtlsv1 | 'dtlsv1.2'.
 
 -define(REPLAY_WINDOW_SIZE, 64).
@@ -135,7 +134,7 @@ set_connection_state_by_epoch(ReadState, Epoch, #{saved_read := #{epoch := Epoch
     States#{saved_read := ReadState}.
 
 %%--------------------------------------------------------------------
--spec init_connection_state_seq(dtls_version(), ssl_record:connection_states()) ->
+-spec init_connection_state_seq(ssl_record:ssl_version(), ssl_record:connection_states()) ->
 				       ssl_record:connection_state().
 %%
 %% Description: Copy the read sequence number to the write sequence number
@@ -163,24 +162,25 @@ current_connection_state_epoch(#{current_write := #{epoch := Epoch}},
     Epoch.
 
 %%--------------------------------------------------------------------
--spec get_dtls_records(binary(), [dtls_version()], binary()) -> {[binary()], binary()} | #alert{}.
+-spec get_dtls_records(binary(), [ssl_record:ssl_version()], binary(),
+                       #ssl_options{}) -> {[binary()], binary()} | #alert{}.
 %%
 %% Description: Given old buffer and new data from UDP/SCTP, packs up a records
 %% and returns it as a list of tls_compressed binaries also returns leftover
 %% data
 %%--------------------------------------------------------------------
-get_dtls_records(Data, Versions, Buffer) ->
+get_dtls_records(Data, Versions, Buffer, SslOpts) ->
     BinData = list_to_binary([Buffer, Data]),
     case erlang:byte_size(BinData) of
         N when N >= 3 ->
             case assert_version(BinData, Versions) of
                 true ->
-                    get_dtls_records_aux(BinData, []);
+                    get_dtls_records_aux(BinData, [], SslOpts);
                 false ->
                     ?ALERT_REC(?FATAL, ?BAD_RECORD_MAC)
             end;
         _ ->
-            get_dtls_records_aux(BinData, [])
+            get_dtls_records_aux(BinData, [], SslOpts)
     end.
 
 %%====================================================================
@@ -188,7 +188,7 @@ get_dtls_records(Data, Versions, Buffer) ->
 %%====================================================================
 
 %%--------------------------------------------------------------------
--spec encode_handshake(iolist(), dtls_version(), integer(), ssl_record:connection_states()) ->
+-spec encode_handshake(iolist(), ssl_record:ssl_version(), integer(), ssl_record:connection_states()) ->
 			      {iolist(), ssl_record:connection_states()}.
 %
 %% Description: Encodes a handshake message to send on the ssl-socket.
@@ -198,7 +198,7 @@ encode_handshake(Frag, Version, Epoch, ConnectionStates) ->
 
 
 %%--------------------------------------------------------------------
--spec encode_alert_record(#alert{}, dtls_version(), ssl_record:connection_states()) ->
+-spec encode_alert_record(#alert{}, ssl_record:ssl_version(), ssl_record:connection_states()) ->
 				 {iolist(), ssl_record:connection_states()}.
 %%
 %% Description: Encodes an alert message to send on the ssl-socket.
@@ -210,7 +210,7 @@ encode_alert_record(#alert{level = Level, description = Description},
 		      ConnectionStates).
 
 %%--------------------------------------------------------------------
--spec encode_change_cipher_spec(dtls_version(), integer(), ssl_record:connection_states()) ->
+-spec encode_change_cipher_spec(ssl_record:ssl_version(), integer(), ssl_record:connection_states()) ->
 				       {iolist(), ssl_record:connection_states()}.
 %%
 %% Description: Encodes a change_cipher_spec-message to send on the ssl socket.
@@ -219,7 +219,7 @@ encode_change_cipher_spec(Version, Epoch, ConnectionStates) ->
     encode_plain_text(?CHANGE_CIPHER_SPEC, Version, Epoch, ?byte(?CHANGE_CIPHER_SPEC_PROTO), ConnectionStates).
 
 %%--------------------------------------------------------------------
--spec encode_data(binary(), dtls_version(), ssl_record:connection_states()) ->
+-spec encode_data(binary(), ssl_record:ssl_version(), ssl_record:connection_states()) ->
 			 {iolist(),ssl_record:connection_states()}.
 %%
 %% Description: Encodes data to send on the ssl-socket.
@@ -248,8 +248,8 @@ decode_cipher_text(#ssl_tls{epoch = Epoch} = CipherText, ConnnectionStates0) ->
 %%====================================================================
 
 %%--------------------------------------------------------------------
--spec protocol_version(dtls_atom_version() | dtls_version()) ->
-			      dtls_version() | dtls_atom_version().
+-spec protocol_version(dtls_atom_version() | ssl_record:ssl_version()) ->
+			      ssl_record:ssl_version() | dtls_atom_version().
 %%
 %% Description: Creates a protocol version record from a version atom
 %% or vice versa.
@@ -263,7 +263,7 @@ protocol_version({254, 253}) ->
 protocol_version({254, 255}) ->
     dtlsv1.
 %%--------------------------------------------------------------------
--spec lowest_protocol_version(dtls_version(), dtls_version()) -> dtls_version().
+-spec lowest_protocol_version(ssl_record:ssl_version(), ssl_record:ssl_version()) -> ssl_record:ssl_version().
 %%
 %% Description: Lowes protocol version of two given versions
 %%--------------------------------------------------------------------
@@ -277,7 +277,7 @@ lowest_protocol_version(_,Version) ->
     Version.
 
 %%--------------------------------------------------------------------
--spec lowest_protocol_version([dtls_version()]) -> dtls_version().
+-spec lowest_protocol_version([ssl_record:ssl_version()]) -> ssl_record:ssl_version().
 %%     
 %% Description: Lowest protocol version present in a list
 %%--------------------------------------------------------------------
@@ -288,7 +288,7 @@ lowest_protocol_version(Versions) ->
     lowest_list_protocol_version(Ver, Vers).
 
 %%--------------------------------------------------------------------
--spec highest_protocol_version([dtls_version()]) -> dtls_version().
+-spec highest_protocol_version([ssl_record:ssl_version()]) -> ssl_record:ssl_version().
 %%
 %% Description: Highest protocol version present in a list
 %%--------------------------------------------------------------------
@@ -299,7 +299,7 @@ highest_protocol_version(Versions) ->
     highest_list_protocol_version(Ver, Vers).
 
 %%--------------------------------------------------------------------
--spec highest_protocol_version(dtls_version(), dtls_version()) -> dtls_version().
+-spec highest_protocol_version(ssl_record:ssl_version(), ssl_record:ssl_version()) -> ssl_record:ssl_version().
 %%
 %% Description: Highest protocol version of two given versions
 %%--------------------------------------------------------------------
@@ -315,7 +315,7 @@ highest_protocol_version(_,Version) ->
     Version.
 
 %%--------------------------------------------------------------------
--spec is_higher(V1 :: dtls_version(), V2::dtls_version()) -> boolean().
+-spec is_higher(V1 :: ssl_record:ssl_version(), V2::ssl_record:ssl_version()) -> boolean().
 %%
 %% Description: Is V1 > V2
 %%--------------------------------------------------------------------
@@ -327,7 +327,7 @@ is_higher(_, _) ->
     false.
 
 %%--------------------------------------------------------------------
--spec supported_protocol_versions() -> [dtls_version()].
+-spec supported_protocol_versions() -> [ssl_record:ssl_version()].
 %%
 %% Description: Protocol versions supported
 %%--------------------------------------------------------------------
@@ -370,7 +370,7 @@ supported_protocol_versions([_|_] = Vsns) ->
     end.
 
 %%--------------------------------------------------------------------
--spec is_acceptable_version(dtls_version(), Supported :: [dtls_version()]) -> boolean().
+-spec is_acceptable_version(ssl_record:ssl_version(), Supported :: [ssl_record:ssl_version()]) -> boolean().
 %%
 %% Description: ssl version 2 is not acceptable security risks are too big.
 %%
@@ -378,7 +378,7 @@ supported_protocol_versions([_|_] = Vsns) ->
 is_acceptable_version(Version, Versions) ->
     lists:member(Version, Versions).
 
--spec hello_version(dtls_version(), [dtls_version()]) -> dtls_version().
+-spec hello_version(ssl_record:ssl_version(), [ssl_record:ssl_version()]) -> ssl_record:ssl_version().
 hello_version(Version, Versions) ->
     case dtls_v1:corresponding_tls_version(Version) of
         TLSVersion when TLSVersion >= {3, 3} ->
@@ -410,42 +410,47 @@ assert_version(<<?BYTE(_), ?BYTE(MajVer), ?BYTE(MinVer), _/binary>>, Versions) -
 
 get_dtls_records_aux(<<?BYTE(?APPLICATION_DATA),?BYTE(MajVer),?BYTE(MinVer),
 		       ?UINT16(Epoch), ?UINT48(SequenceNumber),
-		       ?UINT16(Length), Data:Length/binary, Rest/binary>>,
-		     Acc) ->
+		       ?UINT16(Length), Data:Length/binary, Rest/binary>> = RawDTLSRecord,
+		     Acc, SslOpts) ->
+    ssl_logger:debug(SslOpts#ssl_options.log_level, inbound, 'record', [RawDTLSRecord]),
     get_dtls_records_aux(Rest, [#ssl_tls{type = ?APPLICATION_DATA,
 					 version = {MajVer, MinVer},
 					 epoch = Epoch, sequence_number = SequenceNumber,
-					 fragment = Data} | Acc]);
+					 fragment = Data} | Acc], SslOpts);
 get_dtls_records_aux(<<?BYTE(?HANDSHAKE),?BYTE(MajVer),?BYTE(MinVer),
 		       ?UINT16(Epoch), ?UINT48(SequenceNumber),
 		       ?UINT16(Length),
-		       Data:Length/binary, Rest/binary>>, Acc) when MajVer >= 128 ->
+		       Data:Length/binary, Rest/binary>> = RawDTLSRecord,
+                     Acc, SslOpts) when MajVer >= 128 ->
+    ssl_logger:debug(SslOpts#ssl_options.log_level, inbound, 'record', [RawDTLSRecord]),
     get_dtls_records_aux(Rest, [#ssl_tls{type = ?HANDSHAKE,
 					 version = {MajVer, MinVer},
 					 epoch = Epoch, sequence_number = SequenceNumber,
-					 fragment = Data} | Acc]);
+					 fragment = Data} | Acc], SslOpts);
 get_dtls_records_aux(<<?BYTE(?ALERT),?BYTE(MajVer),?BYTE(MinVer),
 		       ?UINT16(Epoch), ?UINT48(SequenceNumber),
 		       ?UINT16(Length), Data:Length/binary,
-		       Rest/binary>>, Acc) ->
+		       Rest/binary>> = RawDTLSRecord, Acc, SslOpts) ->
+    ssl_logger:debug(SslOpts#ssl_options.log_level, inbound, 'record', [RawDTLSRecord]),
     get_dtls_records_aux(Rest, [#ssl_tls{type = ?ALERT,
 					 version = {MajVer, MinVer},
 					 epoch = Epoch, sequence_number = SequenceNumber,
-					 fragment = Data} | Acc]);
+					 fragment = Data} | Acc], SslOpts);
 get_dtls_records_aux(<<?BYTE(?CHANGE_CIPHER_SPEC),?BYTE(MajVer),?BYTE(MinVer),
 		       ?UINT16(Epoch), ?UINT48(SequenceNumber),
-		       ?UINT16(Length), Data:Length/binary, Rest/binary>>,
-		     Acc) ->
+		       ?UINT16(Length), Data:Length/binary, Rest/binary>> = RawDTLSRecord,
+		     Acc, SslOpts) ->
+    ssl_logger:debug(SslOpts#ssl_options.log_level, inbound, 'record', [RawDTLSRecord]),
     get_dtls_records_aux(Rest, [#ssl_tls{type = ?CHANGE_CIPHER_SPEC,
 					 version = {MajVer, MinVer},
 					 epoch = Epoch, sequence_number = SequenceNumber,
-					 fragment = Data} | Acc]);
+					 fragment = Data} | Acc], SslOpts);
 get_dtls_records_aux(<<?BYTE(_), ?BYTE(_MajVer), ?BYTE(_MinVer),
 		       ?UINT16(Length), _/binary>>,
-		     _Acc) when Length > ?MAX_CIPHER_TEXT_LENGTH ->
+		     _Acc, _) when Length > ?MAX_CIPHER_TEXT_LENGTH ->
     ?ALERT_REC(?FATAL, ?RECORD_OVERFLOW);
 
-get_dtls_records_aux(Data, Acc) ->
+get_dtls_records_aux(Data, Acc, _) ->
     case size(Data) =< ?MAX_CIPHER_TEXT_LENGTH + ?INITIAL_BYTES of
 	true ->
 	    {lists:reverse(Acc), Data};
@@ -547,15 +552,15 @@ decode_cipher_text(#ssl_tls{type = Type, version = Version,
 			    compression_algorithm = CompAlg}} = ReadState0, 
 		   ConnnectionStates0) ->
     AAD = start_additional_data(Type, Version, Epoch, Seq),
-    CipherS1 = ssl_record:nonce_seed(BulkCipherAlgo, <<?UINT16(Epoch), ?UINT48(Seq)>>, CipherS0),
+    CipherS = ssl_record:nonce_seed(BulkCipherAlgo, <<?UINT16(Epoch), ?UINT48(Seq)>>, CipherS0),
     TLSVersion = dtls_v1:corresponding_tls_version(Version),
-    case  ssl_record:decipher_aead(BulkCipherAlgo, CipherS1, AAD, CipherFragment, TLSVersion) of
-	{PlainFragment, CipherState} ->
-	    {Plain, CompressionS1} = ssl_record:uncompress(CompAlg,
+    case ssl_record:decipher_aead(BulkCipherAlgo, CipherS, AAD, CipherFragment, TLSVersion) of
+	PlainFragment when is_binary(PlainFragment) ->
+	    {Plain, CompressionS} = ssl_record:uncompress(CompAlg,
 							   PlainFragment, CompressionS0),
-	    ReadState0 = ReadState0#{compression_state => CompressionS1,
-                                    cipher_state => CipherState},
-            ReadState = update_replay_window(Seq, ReadState0),
+	    ReadState1 = ReadState0#{compression_state := CompressionS,
+                                     cipher_state := CipherS},
+            ReadState = update_replay_window(Seq, ReadState1),
 	    ConnnectionStates = set_connection_state_by_epoch(ReadState, Epoch, ConnnectionStates0, read),
 	    {CipherText#ssl_tls{fragment = Plain}, ConnnectionStates};
 	  #alert{} = Alert ->
diff --git a/lib/ssl/src/dtls_socket.erl b/lib/ssl/src/dtls_socket.erl
index 2001afd02f..4d07372e31 100644
--- a/lib/ssl/src/dtls_socket.erl
+++ b/lib/ssl/src/dtls_socket.erl
@@ -38,7 +38,9 @@ listen(Port, #config{transport_info = TransportInfo,
     case dtls_listener_sup:start_child([Port, TransportInfo, emulated_socket_options(EmOpts, #socket_options{}), 
 				   Options ++ internal_inet_values(), SslOpts]) of
 	{ok, Pid} ->
-	    {ok, #sslsocket{pid = {dtls, Config#config{dtls_handler = {Pid, Port}}}}};
+        Socket = #sslsocket{pid = {dtls, Config#config{dtls_handler = {Pid, Port}}}},
+        check_active_n(EmOpts, Socket),
+	    {ok, Socket};
 	Err = {error, _} ->
 	    Err
     end.
@@ -81,8 +83,9 @@ socket(Pids, Transport, Socket, ConnectionCb) ->
     #sslsocket{pid = Pids, 
 	       %% "The name "fd" is keept for backwards compatibility
 	       fd = {Transport, Socket, ConnectionCb}}.
-setopts(_, #sslsocket{pid = {dtls, #config{dtls_handler = {ListenPid, _}}}}, Options) ->
-    SplitOpts = tls_socket:split_options(Options),
+setopts(_, Socket = #sslsocket{pid = {dtls, #config{dtls_handler = {ListenPid, _}}}}, Options) ->
+    SplitOpts = {_, EmOpts} = tls_socket:split_options(Options),
+    check_active_n(EmOpts, Socket),
     dtls_packet_demux:set_sock_opts(ListenPid, SplitOpts);
 %%% Following clauses will not be called for emulated options, they are  handled in the connection process
 setopts(gen_udp, Socket, Options) ->
@@ -90,6 +93,32 @@ setopts(gen_udp, Socket, Options) ->
 setopts(Transport, Socket, Options) ->
     Transport:setopts(Socket, Options).
 
+check_active_n(EmulatedOpts, Socket = #sslsocket{pid = {dtls, #config{dtls_handler = {ListenPid, _}}}}) ->
+    %% We check the resulting options to send an ssl_passive message if necessary.
+    case proplists:lookup(active, EmulatedOpts) of
+        %% The provided value is out of bound.
+        {_, N} when is_integer(N), N < -32768 ->
+            throw(einval);
+        {_, N} when is_integer(N), N > 32767 ->
+            throw(einval);
+        {_, N} when is_integer(N) ->
+            {ok, #socket_options{active = Active}, _} = dtls_packet_demux:get_all_opts(ListenPid),
+            case Active of
+                Atom when is_atom(Atom), N =< 0 ->
+                    self() ! {ssl_passive, Socket};
+                %% The result of the addition is out of bound.
+                %% We do not need to check < -32768 because Active can't be below 1.
+                A when is_integer(A), A + N > 32767 ->
+                    throw(einval);
+                A when is_integer(A), A + N =< 0 ->
+                    self() ! {ssl_passive, Socket};
+                _ ->
+                    ok
+            end;
+        _ ->
+            ok
+    end.
+
 getopts(_, #sslsocket{pid = {dtls, #config{dtls_handler = {ListenPid, _}}}}, Options) ->
     SplitOpts = tls_socket:split_options(Options),
     dtls_packet_demux:get_sock_opts(ListenPid, SplitOpts);
@@ -161,9 +190,18 @@ emulated_socket_options(InetValues, #socket_options{
        mode   = proplists:get_value(mode, InetValues, Mode),
        packet = proplists:get_value(packet, InetValues, Packet),
        packet_size = proplists:get_value(packet_size, InetValues, PacketSize),
-       active = proplists:get_value(active, InetValues, Active)
+       active = emulated_active_option(InetValues, Active)
       }.
 
+emulated_active_option([], Active) ->
+    Active;
+emulated_active_option([{active, Active} | _], _) when Active =< 0 ->
+    false;
+emulated_active_option([{active, Active} | _], _) ->
+    Active;
+emulated_active_option([_|Tail], Active) ->
+    emulated_active_option(Tail, Active).
+
 emulated_options([{mode, Value} = Opt |Opts], Inet, Emulated) ->
     validate_inet_option(mode, Value),
     emulated_options(Opts, Inet, [Opt | proplists:delete(mode, Emulated)]);
@@ -185,6 +223,9 @@ validate_inet_option(mode, Value)
   when Value =/= list, Value =/= binary ->
     throw({error, {options, {mode,Value}}});
 validate_inet_option(active, Value)
+  when Value >= -32768, Value =< 32767 ->
+    ok;
+validate_inet_option(active, Value)
   when Value =/= true, Value =/= false, Value =/= once ->
     throw({error, {options, {active,Value}}});
 validate_inet_option(_, _) ->
diff --git a/lib/ssl/src/inet_tls_dist.erl b/lib/ssl/src/inet_tls_dist.erl
index a4f8bb7562..8d9b92361b 100644
--- a/lib/ssl/src/inet_tls_dist.erl
+++ b/lib/ssl/src/inet_tls_dist.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2011-2018. All Rights Reserved.
+%% Copyright Ericsson AB 2011-2019. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -41,6 +41,7 @@
 -include_lib("public_key/include/public_key.hrl").
 
 -include("ssl_api.hrl").
+-include_lib("kernel/include/logger.hrl").
 
 %% -------------------------------------------------------------------------
 
@@ -131,8 +132,8 @@ f_recv(SslSocket, Length, Timeout) ->
 f_setopts_pre_nodeup(_SslSocket) ->
     ok.
 
-f_setopts_post_nodeup(_SslSocket) ->
-    ok.
+f_setopts_post_nodeup(SslSocket) ->
+    ssl:setopts(SslSocket, [nodelay()]).
 
 f_getll(DistCtrl) ->
     {ok, DistCtrl}.
@@ -198,7 +199,7 @@ listen(Name) ->
 gen_listen(Driver, Name) ->
     case inet_tcp_dist:gen_listen(Driver, Name) of
         {ok, {Socket, Address, Creation}} ->
-            inet:setopts(Socket, [{packet, 4}]),
+            inet:setopts(Socket, [{packet, 4}, {nodelay, true}]),
             {ok, {Socket, Address#net_address{protocol=tls}, Creation}};
         Other ->
             Other
@@ -225,7 +226,7 @@ accept_loop(Driver, Listen, Kernel) ->
                 true ->
                     accept_loop(Driver, Listen, Kernel, Socket);
                 {false,IP} ->
-		    error_logger:error_msg(
+		    ?LOG_ERROR(
                       "** Connection attempt from "
                       "disallowed IP ~w ** ~n", [IP]),
 		    ?shutdown2(no_node, trace({disallowed, IP}))
@@ -260,7 +261,7 @@ accept_loop(Driver, Listen, Kernel, Socket) ->
         {error, {options, _}} = Error ->
             %% Bad options: that's probably our fault.
             %% Let's log that.
-            error_logger:error_msg(
+            ?LOG_ERROR(
               "Cannot accept TLS distribution connection: ~s~n",
               [ssl:format_error(Error)]),
             gen_tcp:close(Socket),
@@ -436,7 +437,7 @@ allowed_nodes(SslSocket, Allowed) ->
                           PeerCert, allowed_hosts(Allowed), PeerIP)
                     of
                         [] ->
-                            error_logger:error_msg(
+                            ?LOG_ERROR(
                               "** Connection attempt from "
                               "disallowed node(s) ~p ** ~n", [PeerIP]),
                             ?shutdown2(
@@ -480,22 +481,25 @@ allowed_nodes(PeerCert, Allowed, PeerIP, Node, Host) ->
             allowed_nodes(PeerCert, Allowed, PeerIP)
     end.
 
-
-
 setup(Node, Type, MyNode, LongOrShortNames, SetupTime) ->
     gen_setup(inet_tcp, Node, Type, MyNode, LongOrShortNames, SetupTime).
 
 gen_setup(Driver, Node, Type, MyNode, LongOrShortNames, SetupTime) ->
     Kernel = self(),
     monitor_pid(
-      spawn_opt(
-        fun() ->
-                do_setup(
-                  Driver, Kernel, Node, Type,
-                  MyNode, LongOrShortNames, SetupTime)
-        end,
-        [link, {priority, max}])).
+      spawn_opt(setup_fun(Driver, Kernel, Node, Type, MyNode, LongOrShortNames, SetupTime),
+                [link, {priority, max}])).
+
+-spec setup_fun(_,_,_,_,_,_,_) -> fun(() -> no_return()).
+setup_fun(Driver, Kernel, Node, Type, MyNode, LongOrShortNames, SetupTime) ->
+    fun() ->
+            do_setup(
+              Driver, Kernel, Node, Type,
+              MyNode, LongOrShortNames, SetupTime)
+    end.
 
+
+-spec do_setup(_,_,_,_,_,_,_) -> no_return().
 do_setup(Driver, Kernel, Node, Type, MyNode, LongOrShortNames, SetupTime) ->
     {Name, Address} = split_node(Driver, Node, LongOrShortNames),
     ErlEpmd = net_kernel:epmd_module(),
@@ -520,13 +524,15 @@ do_setup(Driver, Kernel, Node, Type, MyNode, LongOrShortNames, SetupTime) ->
                trace({getaddr_failed, Driver, Address, Other}))
     end.
 
+-spec do_setup_connect(_,_,_,_,_,_,_,_,_,_) -> no_return().
+
 do_setup_connect(Driver, Kernel, Node, Address, Ip, TcpPort, Version, Type, MyNode, Timer) ->
     Opts =  trace(connect_options(get_ssl_options(client))),
     dist_util:reset_timer(Timer),
     case ssl:connect(
         Address, TcpPort,
         [binary, {active, false}, {packet, 4},
-            Driver:family(), nodelay()] ++ Opts,
+            Driver:family(), {nodelay, true}] ++ Opts,
         net_kernel:connecttime()) of
     {ok, #sslsocket{pid = [_, DistCtrl| _]} = SslSocket} ->
             _ = monitor_pid(DistCtrl),
@@ -564,7 +570,7 @@ gen_close(Driver, Socket) ->
 %% Determine if EPMD module supports address resolving. Default
 %% is to use inet_tcp:getaddr/2.
 %% ------------------------------------------------------------
-get_address_resolver(EpmdModule, Driver) ->
+get_address_resolver(EpmdModule, _Driver) ->
     case erlang:function_exported(EpmdModule, address_please, 3) of
         true -> {EpmdModule, address_please};
         _    -> {erl_epmd, address_please}
@@ -690,12 +696,12 @@ split_node(Driver, Node, LongOrShortNames) ->
         {node, Name, Host} ->
 	    check_node(Driver, Node, Name, Host, LongOrShortNames);
 	{host, _} ->
-	    error_logger:error_msg(
+	    ?LOG_ERROR(
               "** Nodename ~p illegal, no '@' character **~n",
               [Node]),
 	    ?shutdown2(Node, trace({illegal_node_n@me, Node}));
 	_ ->
-	    error_logger:error_msg(
+	    ?LOG_ERROR(
               "** Nodename ~p illegal **~n", [Node]),
 	    ?shutdown2(Node, trace({illegal_node_name, Node}))
     end.
@@ -707,7 +713,7 @@ check_node(Driver, Node, Name, Host, LongOrShortNames) ->
 		{ok, _} ->
 		    {Name, Host};
 		_ ->
-		    error_logger:error_msg(
+		    ?LOG_ERROR(
                       "** System running to use "
                       "fully qualified hostnames **~n"
                       "** Hostname ~s is illegal **~n",
@@ -715,7 +721,7 @@ check_node(Driver, Node, Name, Host, LongOrShortNames) ->
 		    ?shutdown2(Node, trace({not_longnames, Host}))
 	    end;
 	[_,_|_] when LongOrShortNames =:= shortnames ->
-	    error_logger:error_msg(
+	    ?LOG_ERROR(
               "** System NOT running to use "
               "fully qualified hostnames **~n"
               "** Hostname ~s is illegal **~n",
@@ -845,13 +851,13 @@ monitor_pid(Pid) ->
     %%          MRef = erlang:monitor(process, Pid),
     %%          receive
     %%              {'DOWN', MRef, _, _, normal} ->
-    %%                  error_logger:error_report(
-    %%                    [dist_proc_died,
+    %%                  ?LOG_ERROR(
+    %%                    [{slogan, dist_proc_died},
     %%                     {reason, normal},
     %%                     {pid, Pid}]);
     %%              {'DOWN', MRef, _, _, Reason} ->
-    %%                  error_logger:info_report(
-    %%                    [dist_proc_died,
+    %%                  ?LOG_NOTICE(
+    %%                    [{slogan, dist_proc_died},
     %%                     {reason, Reason},
     %%                     {pid, Pid}])
     %%          end
diff --git a/lib/ssl/src/ssl.app.src b/lib/ssl/src/ssl.app.src
index 936df12e70..e7a4d73ec4 100644
--- a/lib/ssl/src/ssl.app.src
+++ b/lib/ssl/src/ssl.app.src
@@ -4,13 +4,17 @@
     {modules, [
 	       %% TLS/SSL 
 	       tls_connection,
+	       tls_connection_1_3,
 	       tls_handshake,
+	       tls_handshake_1_3,
 	       tls_record,
+	       tls_record_1_3,
 	       tls_socket,
 	       tls_v1,
 	       ssl_v3,
 	       tls_connection_sup,
 	       tls_sender,
+	       ssl_dh_groups,
 	       %% DTLS
 	       dtls_connection,
 	       dtls_handshake,
@@ -51,6 +55,8 @@
 	       ssl_crl_cache, 
 	       ssl_crl_cache_api,
 	       ssl_crl_hash_dir,
+	       %% Logging
+	       ssl_logger,
 	       %% App structure
 	       ssl_app,
 	       ssl_sup,
diff --git a/lib/ssl/src/ssl.erl b/lib/ssl/src/ssl.erl
index 03a1e40bfc..8807c575b1 100644
--- a/lib/ssl/src/ssl.erl
+++ b/lib/ssl/src/ssl.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 1999-2018. All Rights Reserved.
+%% Copyright Ericsson AB 1999-2019. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -51,7 +51,7 @@
 %% SSL/TLS protocol handling
 -export([cipher_suites/0, cipher_suites/1, cipher_suites/2, filter_cipher_suites/2,
          prepend_cipher_suites/2, append_cipher_suites/2,
-         eccs/0, eccs/1, versions/0, 
+         eccs/0, eccs/1, versions/0, groups/0, groups/1,
          format_error/1, renegotiate/1, prf/5, negotiated_protocol/1, 
 	 connection_information/1, connection_information/2]).
 %% Misc
@@ -61,16 +61,345 @@
 -deprecated({ssl_accept, 2, eventually}).
 -deprecated({ssl_accept, 3, eventually}).
 
+-export_type([socket/0,
+              sslsocket/0,
+              socket_option/0,
+              active_msgs/0,
+              host/0,
+              tls_option/0,              
+              tls_client_option/0,
+              tls_server_option/0,                            
+              erl_cipher_suite/0,
+              old_cipher_suite/0,
+              ciphers/0,             
+              cipher/0,
+              hash/0,
+              key/0,
+              kex_algo/0,
+              prf_random/0, 
+              cipher_filters/0,
+              sign_algo/0,
+              protocol_version/0,
+              protocol_extensions/0,
+              session_id/0,
+              error_alert/0,
+              srp_param_type/0]).
+
+%% -------------------------------------------------------------------------------------------------------
+-type socket()                   :: gen_tcp:socket().
+-type socket_option()            :: gen_tcp:connect_option() | gen_tcp:listen_option() | gen_udp:option().
+-type sslsocket()                :: any().
+-type tls_option()               :: tls_client_option() | tls_server_option().
+-type tls_client_option()        :: client_option() | common_option() | socket_option() |  transport_option().
+-type tls_server_option()        :: server_option() | common_option() | socket_option() | transport_option().
+-type active_msgs()              :: {ssl, sslsocket(), Data::binary() | list()} | {ssl_closed, sslsocket()} |
+                                    {ssl_error, sslsocket(), Reason::term()} | {ssl_passive, sslsocket()}.
+-type transport_option()         :: {cb_info, {CallbackModule::atom(), DataTag::atom(),
+                                               ClosedTag::atom(), ErrTag::atom()}} |  
+                                    {cb_info, {CallbackModule::atom(), DataTag::atom(),
+                                               ClosedTag::atom(), ErrTag::atom(), PassiveTag::atom()}}.
+-type host()                     :: hostname() | ip_address().
+-type hostname()                 :: string().
+-type ip_address()               :: inet:ip_address().
+-type session_id()               :: binary().
+-type protocol_version()         :: tls_version() | dtls_version().
+-type tls_version()              :: 'tlsv1.2' | 'tlsv1.3' | tls_legacy_version().
+-type dtls_version()             :: 'dtlsv1.2' | dtls_legacy_version().
+-type tls_legacy_version()       ::  tlsv1 | 'tlsv1.1' | sslv3.
+-type dtls_legacy_version()      :: 'dtlsv1'. 
+-type verify_type()              :: verify_none | verify_peer.
+-type cipher()                   :: aes_128_cbc |
+                                    aes_256_cbc |
+                                    aes_128_gcm |
+                                    aes_256_gcm |
+                                    aes_128_ccm |
+                                    aes_256_ccm |
+                                    aes_128_ccm_8 |
+                                    aes_256_ccm_8 |                                    
+                                    chacha20_poly1305 |
+                                    legacy_cipher().
+-type legacy_cipher()            ::  rc4_128 |
+                                     des_cbc |
+                                     '3des_ede_cbc'.
+
+-type hash()                     :: sha |
+                                    sha2() |
+                                    legacy_hash().
+
+-type sha2()                    ::  sha224 |
+                                    sha256 |
+                                    sha384 |
+                                    sha512.
+
+-type legacy_hash()             :: md5.
+
+-type sign_algo()               :: rsa | dsa | ecdsa.
+
+-type sign_scheme()             :: rsa_pkcs1_sha256 
+                                 | rsa_pkcs1_sha384
+                                 | rsa_pkcs1_sha512
+                                 | ecdsa_secp256r1_sha256
+                                 | ecdsa_secp384r1_sha384
+                                 | ecdsa_secp521r1_sha512
+                                 | rsa_pss_rsae_sha256
+                                 | rsa_pss_rsae_sha384
+                                 | rsa_pss_rsae_sha512
+                                 | rsa_pss_pss_sha256
+                                 | rsa_pss_pss_sha384
+                                 | rsa_pss_pss_sha512
+                                 | rsa_pkcs1_sha1
+                                 | ecdsa_sha1.
+-type kex_algo()                :: rsa |
+                                   dhe_rsa | dhe_dss |
+                                   ecdhe_ecdsa | ecdh_ecdsa | ecdh_rsa |
+                                   srp_rsa| srp_dss |
+                                   psk | dhe_psk | rsa_psk |
+                                   dh_anon | ecdh_anon | srp_anon |
+                                   any. %% TLS 1.3
+-type erl_cipher_suite()       :: #{key_exchange := kex_algo(),
+                                    cipher := cipher(),
+                                    mac    := hash() | aead,
+                                    prf    := hash() | default_prf %% Old cipher suites, version dependent
+                                   }.  
+
+-type old_cipher_suite() :: {kex_algo(), cipher(), hash()} % Pre TLS 1.2 
+                             %% TLS 1.2, internally PRE TLS 1.2 will use default_prf
+                           | {kex_algo(), cipher(), hash() | aead, hash()}. 
+
+-type named_curve()           :: sect571r1 |
+                                 sect571k1 |
+                                 secp521r1 |
+                                 brainpoolP512r1 |
+                                 sect409k1 |
+                                 sect409r1 |
+                                 brainpoolP384r1 |
+                                 secp384r1 |
+                                 sect283k1 |
+                                 sect283r1 |
+                                 brainpoolP256r1 |
+                                 secp256k1 |
+                                 secp256r1 |
+                                 sect239k1 |
+                                 sect233k1 |
+                                 sect233r1 |
+                                 secp224k1 |
+                                 secp224r1 |
+                                 sect193r1 |
+                                 sect193r2 |
+                                 secp192k1 |
+                                 secp192r1 |
+                                 sect163k1 |
+                                 sect163r1 |
+                                 sect163r2 |
+                                 secp160k1 |
+                                 secp160r1 |
+                                 secp160r2.
+
+-type srp_param_type()        :: srp_1024 |
+                                 srp_1536 |
+                                 srp_2048 |
+                                 srp_3072 |
+                                 srp_4096 |
+                                 srp_6144 |
+                                 srp_8192.
+
+-type error_alert()           :: {tls_alert, {tls_alert(), Description::string()}}.
+
+-type tls_alert()             :: close_notify | 
+                                 unexpected_message | 
+                                 bad_record_mac | 
+                                 record_overflow | 
+                                 handshake_failure |
+                                 bad_certificate | 
+                                 unsupported_certificate | 
+                                 certificate_revoked | 
+                                 certificate_expired | 
+                                 certificate_unknown |
+                                 illegal_parameter | 
+                                 unknown_ca | 
+                                 access_denied | 
+                                 decode_error | 
+                                 decrypt_error | 
+                                 export_restriction| 
+                                 protocol_version |
+                                 insufficient_security |
+                                 internal_error |
+                                 inappropriate_fallback |
+                                 user_canceled |
+                                 no_renegotiation |
+                                 unsupported_extension |
+                                 certificate_unobtainable |
+                                 unrecognized_name |
+                                 bad_certificate_status_response |
+                                 bad_certificate_hash_value |
+                                 unknown_psk_identity |
+                                 no_application_protocol.
+%% -------------------------------------------------------------------------------------------------------
+-type common_option()        :: {protocol, protocol()} |
+                                {handshake, handshake_completion()} |
+                                {cert, cert()} |
+                                {certfile, cert_pem()} |
+                                {key, key()} |
+                                {keyfile, key_pem()} |
+                                {password, key_password()} |
+                                {ciphers, cipher_suites()} |
+                                {eccs, eccs()} |
+                                {signature_algs_cert, signature_schemes()} |
+                                {secure_renegotiate, secure_renegotiation()} |
+                                {depth, allowed_cert_chain_length()} |
+                                {verify_fun, custom_verify()} |
+                                {crl_check, crl_check()} |
+                                {crl_cache, crl_cache_opts()} |
+                                {max_handshake_size, handshake_size()} |
+                                {partial_chain, root_fun()} |
+                                {versions, protocol_versions()} |
+                                {user_lookup_fun, custom_user_lookup()} |
+                                {log_level, logging_level()} |
+                                {log_alert, log_alert()} |
+                                {hibernate_after, hibernate_after()} |
+                                {padding_check, padding_check()} |
+                                {beast_mitigation, beast_mitigation()} |
+                                {ssl_imp, ssl_imp()}.
+
+-type protocol()                  :: tls | dtls.
+-type handshake_completion()      :: hello | full.
+-type cert()                      :: public_key:der_encoded().
+-type cert_pem()                  :: file:filename().
+-type key()                       :: {'RSAPrivateKey'| 'DSAPrivateKey' | 'ECPrivateKey' |'PrivateKeyInfo', 
+                                           public_key:der_encoded()} | 
+                                     #{algorithm := rsa | dss | ecdsa, 
+                                       engine := crypto:engine_ref(), 
+                                       key_id := crypto:key_id(), 
+                                       password => crypto:password()}.
+-type key_pem()                   :: file:filename().
+-type key_password()              :: string().
+-type cipher_suites()             :: ciphers().    
+-type ciphers()                   :: [erl_cipher_suite()] |
+                                     string(). % (according to old API)
+-type cipher_filters()            :: list({key_exchange | cipher | mac | prf,
+                                        algo_filter()}).
+-type algo_filter()               :: fun((kex_algo()|cipher()|hash()|aead|default_prf) -> true | false).
+-type eccs()                      :: [named_curve()].  
+-type secure_renegotiation()      :: boolean(). 
+-type allowed_cert_chain_length() :: integer().
+
+-type custom_verify()               ::  {Verifyfun :: fun(), InitialUserState :: term()}.
+-type crl_check()                :: boolean() | peer | best_effort.
+-type crl_cache_opts()           :: [term()].
+-type handshake_size()           :: integer().
+-type hibernate_after()          :: timeout().
+-type root_fun()                 ::  fun().
+-type protocol_versions()        ::  [protocol_version()].
+-type signature_algs()           ::  [{hash(), sign_algo()}].
+-type signature_schemes()        ::  [sign_scheme()].
+-type custom_user_lookup()       ::  {Lookupfun :: fun(), UserState :: term()}.
+-type padding_check()            :: boolean(). 
+-type beast_mitigation()         :: one_n_minus_one | zero_n | disabled.
+-type srp_identity()             :: {Username :: string(), Password :: string()}.
+-type psk_identity()             :: string().
+-type log_alert()                :: boolean().
+-type logging_level()            :: logger:level().
+
+%% -------------------------------------------------------------------------------------------------------
+
+-type client_option()        :: {verify, client_verify_type()} |
+                                {reuse_session, client_reuse_session()} |
+                                {reuse_sessions, client_reuse_sessions()} |
+                                {cacerts, client_cacerts()} |
+                                {cacertfile, client_cafile()} |
+                                {alpn_advertised_protocols, client_alpn()} |
+                                {client_preferred_next_protocols, client_preferred_next_protocols()} |
+                                {psk_identity, client_psk_identity()} |
+                                {srp_identity, client_srp_identity()} |
+                                {server_name_indication, sni()} |
+                                {customize_hostname_check, customize_hostname_check()} |
+                                {signature_algs, client_signature_algs()} |                                    
+                                {fallback, fallback()}.
+
+-type client_verify_type()       :: verify_type().
+-type client_reuse_session()     :: session_id().
+-type client_reuse_sessions()    :: boolean() | save.
+-type client_cacerts()           :: [public_key:der_encoded()].
+-type client_cafile()            :: file:filename().
+-type app_level_protocol()       :: binary().
+-type client_alpn()              :: [app_level_protocol()].
+-type client_preferred_next_protocols() :: {Precedence :: server | client, 
+                                            ClientPrefs :: [app_level_protocol()]} |
+                                           {Precedence :: server | client, 
+                                            ClientPrefs :: [app_level_protocol()], 
+                                            Default::app_level_protocol()}.
+-type client_psk_identity()             :: psk_identity().
+-type client_srp_identity()             :: srp_identity().
+-type customize_hostname_check() :: list().
+-type sni()                      :: HostName :: hostname() | disable. 
+-type client_signature_algs()    :: signature_algs().
+-type fallback()                 :: boolean().
+-type ssl_imp()                  :: new | old.
+
+%% -------------------------------------------------------------------------------------------------------
+
+-type server_option()        :: {cacerts, server_cacerts()} |
+                                {cacertfile, server_cafile()} |
+                                {dh, dh_der()} |
+                                {dhfile, dh_file()} |
+                                {verify, server_verify_type()} |
+                                {fail_if_no_peer_cert, fail_if_no_peer_cert()} |
+                                {reuse_sessions, server_reuse_sessions()} |
+                                {reuse_session, server_reuse_session()} |
+                                {alpn_preferred_protocols, server_alpn()} |
+                                {next_protocols_advertised, server_next_protocol()} |
+                                {psk_identity, server_psk_identity()} |
+                                {honor_cipher_order, boolean()} |
+                                {sni_hosts, sni_hosts()} |
+                                {sni_fun, sni_fun()} |
+                                {honor_cipher_order, honor_cipher_order()} |
+                                {honor_ecc_order, honor_ecc_order()} |
+                                {client_renegotiation, client_renegotiation()}|
+                                {signature_algs, server_signature_algs()}.
+
+-type server_cacerts()           :: [public_key:der_encoded()].
+-type server_cafile()            :: file:filename().
+-type server_alpn()              :: [app_level_protocol()].
+-type server_next_protocol()     :: [app_level_protocol()].
+-type server_psk_identity()      :: psk_identity().
+-type dh_der()                   :: binary().
+-type dh_file()                  :: file:filename().
+-type server_verify_type()       :: verify_type().
+-type fail_if_no_peer_cert()     :: boolean().
+-type server_signature_algs()    :: signature_algs().
+-type server_reuse_session()     :: fun().
+-type server_reuse_sessions()    :: boolean().
+-type sni_hosts()                :: [{hostname(), [server_option() | common_option()]}].
+-type sni_fun()                  :: fun().
+-type honor_cipher_order()       :: boolean().
+-type honor_ecc_order()          :: boolean().
+-type client_renegotiation()     :: boolean().
+%% -------------------------------------------------------------------------------------------------------
+-type prf_random() :: client_random | server_random.
+-type protocol_extensions()  :: #{renegotiation_info => binary(),
+                                  signature_algs => signature_algs(),
+                                  alpn =>  app_level_protocol(),
+                                  srp  => binary(),
+                                  next_protocol => app_level_protocol(),
+                                  ec_point_formats  => [0..2],
+                                  elliptic_curves => [public_key:oid()],
+                                  sni => hostname()}.
+%% -------------------------------------------------------------------------------------------------------
+
+%%%--------------------------------------------------------------------
+%%% API
+%%%--------------------------------------------------------------------
+
 %%--------------------------------------------------------------------
--spec start() -> ok  | {error, reason()}.
--spec start(permanent | transient | temporary) -> ok | {error, reason()}.
 %%
 %% Description: Utility function that starts the ssl and applications
 %% that it depends on.
 %% see application(3)
 %%--------------------------------------------------------------------
+-spec start() -> ok  | {error, reason()}.
 start() ->
     start(temporary).
+-spec start(permanent | transient | temporary) -> ok | {error, reason()}.
 start(Type) ->
     case application:ensure_all_started(ssl, Type) of
 	{ok, _} ->
@@ -87,24 +416,21 @@ stop() ->
     application:stop(ssl).
 
 %%--------------------------------------------------------------------
--spec connect(host() | port(), [connect_option()]) -> {ok, #sslsocket{}} |
-					      {error, reason()}.
--spec connect(host() | port(), [connect_option()] | inet:port_number(),
-	      timeout() | list()) ->
-		     {ok, #sslsocket{}} | {error, reason()}.
--spec connect(host() | port(), inet:port_number(), list(), timeout()) ->
-		     {ok, #sslsocket{}} | {error, reason()}.
-
 %%
 %% Description: Connect to an ssl server.
 %%--------------------------------------------------------------------
+-spec connect(host() | port(), [tls_client_option()]) -> {ok, #sslsocket{}} |
+                                                      {error, reason()}.
 connect(Socket, SslOptions) when is_port(Socket) ->
     connect(Socket, SslOptions, infinity).
 
+-spec connect(host() | port(), [tls_client_option()] | inet:port_number(),
+	      timeout() | list()) ->
+		     {ok, #sslsocket{}} | {error, reason()}.
 connect(Socket, SslOptions0, Timeout) when is_port(Socket),
-					    (is_integer(Timeout) andalso Timeout >= 0) or (Timeout == infinity) ->
-    {Transport,_,_,_} = proplists:get_value(cb_info, SslOptions0,
-					      {gen_tcp, tcp, tcp_closed, tcp_error}),
+                                           (is_integer(Timeout) andalso Timeout >= 0) or (Timeout == infinity) ->
+    CbInfo = handle_option(cb_info, SslOptions0, default_cb_info(tls)),
+    Transport = element(1, CbInfo),
     EmulatedOptions = tls_socket:emulated_options(),
     {ok, SocketValues} = tls_socket:getopts(Transport, Socket, EmulatedOptions),
     try handle_options(SslOptions0 ++ SocketValues, client) of
@@ -117,6 +443,9 @@ connect(Socket, SslOptions0, Timeout) when is_port(Socket),
 connect(Host, Port, Options) ->
     connect(Host, Port, Options, infinity).
 
+-spec connect(host() | port(), inet:port_number(), list(), timeout()) ->
+		     {ok, #sslsocket{}} | {error, reason()}.
+
 connect(Host, Port, Options, Timeout) when (is_integer(Timeout) andalso Timeout >= 0) or (Timeout == infinity) ->
     try
 	{ok, Config} = handle_options(Options, client, Host),
@@ -132,7 +461,7 @@ connect(Host, Port, Options, Timeout) when (is_integer(Timeout) andalso Timeout
     end.
 
 %%--------------------------------------------------------------------
--spec listen(inet:port_number(), [listen_option()]) ->{ok, #sslsocket{}} | {error, reason()}.
+-spec listen(inet:port_number(), [tls_server_option()]) ->{ok, #sslsocket{}} | {error, reason()}.
 
 %%
 %% Description: Creates an ssl listen socket.
@@ -148,16 +477,16 @@ listen(Port, Options0) ->
 	    Error
     end.
 %%--------------------------------------------------------------------
--spec transport_accept(#sslsocket{}) -> {ok, #sslsocket{}} |
-					{error, reason()}.
--spec transport_accept(#sslsocket{}, timeout()) -> {ok, #sslsocket{}} |
-						   {error, reason()}.
 %%
 %% Description: Performs transport accept on an ssl listen socket
 %%--------------------------------------------------------------------
+-spec transport_accept(#sslsocket{}) -> {ok, #sslsocket{}} |
+					{error, reason()}.
 transport_accept(ListenSocket) ->
     transport_accept(ListenSocket, infinity).
 
+-spec transport_accept(#sslsocket{}, timeout()) -> {ok, #sslsocket{}} |
+						   {error, reason()}.
 transport_accept(#sslsocket{pid = {ListenSocket,
 				   #config{connection_cb = ConnectionCb} = Config}}, Timeout) 
   when (is_integer(Timeout) andalso Timeout >= 0) or (Timeout == infinity) ->
@@ -169,25 +498,25 @@ transport_accept(#sslsocket{pid = {ListenSocket,
     end.
   
 %%--------------------------------------------------------------------
--spec ssl_accept(#sslsocket{}) -> ok | {error, reason()}.
--spec ssl_accept(#sslsocket{} | port(), timeout()| [ssl_option()
-						    | transport_option()]) ->
-			ok | {ok, #sslsocket{}} | {error, reason()}.
-
--spec ssl_accept(#sslsocket{} | port(), [ssl_option()] | [ssl_option()| transport_option()], timeout()) ->
-			ok | {ok, #sslsocket{}} | {error, reason()}.
 %%
 %% Description: Performs accept on an ssl listen socket. e.i. performs
 %%              ssl handshake.
 %%--------------------------------------------------------------------
+-spec ssl_accept(#sslsocket{}) -> ok | {error, timeout | closed | {options, any()}| error_alert()}.
 ssl_accept(ListenSocket) ->
     ssl_accept(ListenSocket, [], infinity).
+
+-spec ssl_accept(#sslsocket{} | port(), timeout()| [tls_server_option()]) ->
+			ok | {ok, #sslsocket{}} | {error, timeout | closed | {options, any()}| error_alert()}.
 ssl_accept(Socket, Timeout)  when  (is_integer(Timeout) andalso Timeout >= 0) or (Timeout == infinity) ->
     ssl_accept(Socket, [], Timeout);
 ssl_accept(ListenSocket, SslOptions) when is_port(ListenSocket) ->
     ssl_accept(ListenSocket, SslOptions, infinity);
 ssl_accept(Socket, Timeout) ->
     ssl_accept(Socket, [], Timeout).
+
+-spec ssl_accept(#sslsocket{} | port(), [tls_server_option()], timeout()) ->
+			ok | {ok, #sslsocket{}} | {error, timeout | closed | {options, any()}| error_alert()}.
 ssl_accept(Socket, SslOptions, Timeout) when is_port(Socket) ->
     handshake(Socket, SslOptions, Timeout);
 ssl_accept(Socket, SslOptions, Timeout) ->
@@ -198,27 +527,34 @@ ssl_accept(Socket, SslOptions, Timeout) ->
             Error
      end.
 %%--------------------------------------------------------------------
--spec handshake(#sslsocket{}) -> {ok, #sslsocket{}} | {error, reason()}.
--spec handshake(#sslsocket{} | port(), timeout()| [ssl_option()
-						    | transport_option()]) ->
-                       {ok, #sslsocket{}} | {error, reason()}.
-
--spec handshake(#sslsocket{} | port(), [ssl_option()] | [ssl_option()| transport_option()], timeout()) ->
-			{ok, #sslsocket{}} | {error, reason()}.
 %%
 %% Description: Performs accept on an ssl listen socket. e.i. performs
 %%              ssl handshake.
 %%--------------------------------------------------------------------
+
+%% Performs the SSL/TLS/DTLS server-side handshake.
+-spec handshake(#sslsocket{}) -> {ok, #sslsocket{}} | {error, timeout | closed | {options, any()} | error_alert()}.
+
 handshake(ListenSocket) ->
     handshake(ListenSocket, infinity).
 
+-spec handshake(#sslsocket{} | port(), timeout()| [tls_server_option()]) ->
+                       {ok, #sslsocket{}} | {error, timeout | closed | {options, any()} | error_alert()}.
 handshake(#sslsocket{} = Socket, Timeout) when  (is_integer(Timeout) andalso Timeout >= 0) or 
                                                 (Timeout == infinity) ->
     ssl_connection:handshake(Socket, Timeout);
 
+%% If Socket is a ordinary socket(): upgrades a gen_tcp, or equivalent, socket to
+%% an SSL socket, that is, performs the SSL/TLS server-side handshake and returns
+%% the SSL socket.
+%%
+%% If Socket is an sslsocket(): provides extra SSL/TLS/DTLS options to those
+%% specified in ssl:listen/2 and then performs the SSL/TLS/DTLS handshake.
 handshake(ListenSocket, SslOptions)  when is_port(ListenSocket) ->
     handshake(ListenSocket, SslOptions, infinity).
 
+-spec handshake(#sslsocket{} | port(), [tls_server_option()], timeout()) ->
+			{ok, #sslsocket{}} | {error, timeout | closed | {options, any()} | error_alert()}.
 handshake(#sslsocket{} = Socket, [], Timeout) when (is_integer(Timeout) andalso Timeout >= 0) or 
                                                     (Timeout == infinity)->
     handshake(Socket, Timeout);
@@ -242,8 +578,8 @@ handshake(#sslsocket{pid = [Pid|_], fd = {_, _, _}} = Socket, SslOpts, Timeout)
     end;
 handshake(Socket, SslOptions, Timeout) when is_port(Socket),
                                             (is_integer(Timeout) andalso Timeout >= 0) or (Timeout == infinity) ->
-    {Transport,_,_,_} =
-	proplists:get_value(cb_info, SslOptions, {gen_tcp, tcp, tcp_closed, tcp_error}),
+    CbInfo = handle_option(cb_info, SslOptions, default_cb_info(tls)),
+    Transport = element(1, CbInfo),
     EmulatedOptions = tls_socket:emulated_options(),
     {ok, SocketValues} = tls_socket:getopts(Transport, Socket, EmulatedOptions),
     ConnetionCb = connection_cb(SslOptions),
@@ -261,7 +597,7 @@ handshake(Socket, SslOptions, Timeout) when is_port(Socket),
 
 
 %%--------------------------------------------------------------------
--spec handshake_continue(#sslsocket{}, [ssl_option()]) -> 
+-spec handshake_continue(#sslsocket{}, [tls_client_option() | tls_server_option()]) -> 
                                 {ok, #sslsocket{}} | {error, reason()}.
 %%
 %%
@@ -270,7 +606,7 @@ handshake(Socket, SslOptions, Timeout) when is_port(Socket),
 handshake_continue(Socket, SSLOptions) ->
     handshake_continue(Socket, SSLOptions, infinity).
 %%--------------------------------------------------------------------
--spec handshake_continue(#sslsocket{}, [ssl_option()], timeout()) -> 
+-spec handshake_continue(#sslsocket{}, [tls_client_option() | tls_server_option()], timeout()) -> 
                                 {ok, #sslsocket{}} | {error, reason()}.
 %%
 %%
@@ -295,7 +631,7 @@ close(#sslsocket{pid = [Pid|_]}) when is_pid(Pid) ->
     ssl_connection:close(Pid, {close, ?DEFAULT_TIMEOUT});
 close(#sslsocket{pid = {dtls, #config{dtls_handler = {Pid, _}}}}) ->
    dtls_packet_demux:close(Pid);
-close(#sslsocket{pid = {ListenSocket, #config{transport_info={Transport,_, _, _}}}}) ->
+close(#sslsocket{pid = {ListenSocket, #config{transport_info={Transport,_,_,_,_}}}}) ->
     Transport:close(ListenSocket).
 
 %%--------------------------------------------------------------------
@@ -311,7 +647,7 @@ close(#sslsocket{pid = [TLSPid|_]},
 close(#sslsocket{pid = [TLSPid|_]}, Timeout) when is_pid(TLSPid),
 					      (is_integer(Timeout) andalso Timeout >= 0) or (Timeout == infinity) ->
     ssl_connection:close(TLSPid, {close, Timeout});
-close(#sslsocket{pid = {ListenSocket, #config{transport_info={Transport,_, _, _}}}}, _) ->
+close(#sslsocket{pid = {ListenSocket, #config{transport_info={Transport,_,_,_,_}}}}, _) ->
     Transport:close(ListenSocket).
 
 %%--------------------------------------------------------------------
@@ -322,29 +658,32 @@ close(#sslsocket{pid = {ListenSocket, #config{transport_info={Transport,_, _, _}
 send(#sslsocket{pid = [Pid]}, Data) when is_pid(Pid) ->
     ssl_connection:send(Pid, Data);
 send(#sslsocket{pid = [_, Pid]}, Data) when is_pid(Pid) ->
-    tls_sender:send_data(Pid,  erlang:iolist_to_binary(Data));
+    tls_sender:send_data(Pid,  erlang:iolist_to_iovec(Data));
 send(#sslsocket{pid = {_, #config{transport_info={_, udp, _, _}}}}, _) ->
     {error,enotconn}; %% Emulate connection behaviour
 send(#sslsocket{pid = {dtls,_}}, _) ->
     {error,enotconn};  %% Emulate connection behaviour
-send(#sslsocket{pid = {ListenSocket, #config{transport_info={Transport, _, _, _}}}}, Data) ->
+send(#sslsocket{pid = {ListenSocket, #config{transport_info = Info}}}, Data) ->
+    Transport = element(1, Info),
     Transport:send(ListenSocket, Data). %% {error,enotconn}
 
 %%--------------------------------------------------------------------
--spec recv(#sslsocket{}, integer()) -> {ok, binary()| list()} | {error, reason()}.
--spec recv(#sslsocket{}, integer(), timeout()) -> {ok, binary()| list()} | {error, reason()}.
 %%
 %% Description: Receives data when active = false
 %%--------------------------------------------------------------------
+-spec recv(#sslsocket{}, integer()) -> {ok, binary()| list()} | {error, reason()}.
 recv(Socket, Length) ->
     recv(Socket, Length, infinity).
+
+-spec recv(#sslsocket{}, integer(), timeout()) -> {ok, binary()| list()} | {error, reason()}.
 recv(#sslsocket{pid = [Pid|_]}, Length, Timeout) when is_pid(Pid),
 						  (is_integer(Timeout) andalso Timeout >= 0) or (Timeout == infinity)->
     ssl_connection:recv(Pid, Length, Timeout);
 recv(#sslsocket{pid = {dtls,_}}, _, _) ->
     {error,enotconn};
 recv(#sslsocket{pid = {Listen,
-		       #config{transport_info = {Transport, _, _, _}}}}, _,_) when is_port(Listen)->
+		       #config{transport_info = Info}}},_,_) when is_port(Listen)->
+    Transport = element(1, Info),
     Transport:recv(Listen, 0). %% {error,enotconn}
 
 %%--------------------------------------------------------------------
@@ -359,7 +698,7 @@ controlling_process(#sslsocket{pid = {dtls, _}},
 		    NewOwner) when is_pid(NewOwner) ->
     ok; %% Meaningless but let it be allowed to conform with TLS 
 controlling_process(#sslsocket{pid = {Listen,
-				      #config{transport_info = {Transport, _, _, _}}}},
+				      #config{transport_info = {Transport,_,_,_,_}}}},
 		    NewOwner) when is_port(Listen),
 				   is_pid(NewOwner) ->
      %% Meaningless but let it be allowed to conform with normal sockets  
@@ -402,13 +741,13 @@ connection_information(#sslsocket{pid = [Pid|_]}, Items) when is_pid(Pid) ->
 %%
 %% Description: same as inet:peername/1.
 %%--------------------------------------------------------------------
-peername(#sslsocket{pid = [Pid|_], fd = {Transport, Socket, _}}) when is_pid(Pid)->
+peername(#sslsocket{pid = [Pid|_], fd = {Transport, Socket,_}}) when is_pid(Pid)->
     dtls_socket:peername(Transport, Socket);
-peername(#sslsocket{pid = [Pid|_], fd = {Transport, Socket, _, _}}) when is_pid(Pid)->
+peername(#sslsocket{pid = [Pid|_], fd = {Transport, Socket,_,_}}) when is_pid(Pid)->
     tls_socket:peername(Transport, Socket);
-peername(#sslsocket{pid = {dtls, #config{dtls_handler = {_Pid, _}}}}) ->
+peername(#sslsocket{pid = {dtls, #config{dtls_handler = {_Pid,_}}}}) ->
     dtls_socket:peername(dtls, undefined);
-peername(#sslsocket{pid = {ListenSocket,  #config{transport_info = {Transport,_,_,_}}}}) ->
+peername(#sslsocket{pid = {ListenSocket,  #config{transport_info = {Transport,_,_,_,_}}}}) ->
     tls_socket:peername(Transport, ListenSocket); %% Will return {error, enotconn}
 peername(#sslsocket{pid = {dtls,_}}) ->
     {error,enotconn}.
@@ -440,13 +779,13 @@ negotiated_protocol(#sslsocket{pid = [Pid|_]}) when is_pid(Pid) ->
     ssl_connection:negotiated_protocol(Pid).
 
 %%--------------------------------------------------------------------
--spec cipher_suites() -> [ssl_cipher_format:old_erl_cipher_suite()] | [string()].
+-spec cipher_suites() -> [old_cipher_suite()] | [string()].
 %%--------------------------------------------------------------------
 cipher_suites() ->
     cipher_suites(erlang).
 %%--------------------------------------------------------------------
 -spec cipher_suites(erlang | openssl | all) -> 
-                           [ssl_cipher_format:old_erl_cipher_suite() | string()].
+                           [old_cipher_suite() | string()].
 %% Description: Returns all supported cipher suites.
 %%--------------------------------------------------------------------
 cipher_suites(erlang) ->
@@ -460,9 +799,9 @@ cipher_suites(all) ->
     [ssl_cipher_format:erl_suite_definition(Suite) || Suite <- available_suites(all)].
 
 %%--------------------------------------------------------------------
--spec cipher_suites(default | all | anonymous, tls_record:tls_version() | dtls_record:dtls_version() |
+-spec cipher_suites(default | all | anonymous, ssl_record:ssl_version() |
                     tls_record:tls_atom_version() |  dtls_record:dtls_atom_version()) -> 
-                           [ssl_cipher_format:erl_cipher_suite()].
+                           [erl_cipher_suite()].
 %% Description: Returns all default and all supported cipher suites for a
 %% TLS/DTLS version
 %%--------------------------------------------------------------------
@@ -478,9 +817,10 @@ cipher_suites(Base, Version) ->
     [ssl_cipher_format:suite_definition(Suite) || Suite <- supported_suites(Base, Version)].
 
 %%--------------------------------------------------------------------
--spec filter_cipher_suites([ssl_cipher_format:erl_cipher_suite()], 
+-spec filter_cipher_suites([erl_cipher_suite()] | [ssl_cipher_format:cipher_suite()] , 
                            [{key_exchange | cipher | mac | prf, fun()}] | []) -> 
-                                  [ssl_cipher_format:erl_cipher_suite()].
+                                  [erl_cipher_suite()] | [ssl_cipher_format:cipher_suite()].
+
 %% Description: Removes cipher suites if any of the filter functions returns false
 %% for any part of the cipher suite. This function also calls default filter functions
 %% to make sure the cipher suite are supported by crypto.
@@ -497,10 +837,10 @@ filter_cipher_suites(Suites, Filters0) ->
                 prf_filters => add_filter(proplists:get_value(prf, Filters0), PrfF)},
     ssl_cipher:filter_suites(Suites, Filters).
 %%--------------------------------------------------------------------
--spec prepend_cipher_suites([ssl_cipher_format:erl_cipher_suite()] | 
+-spec prepend_cipher_suites([erl_cipher_suite()] | 
                             [{key_exchange | cipher | mac | prf, fun()}],
-                            [ssl_cipher_format:erl_cipher_suite()]) -> 
-                                   [ssl_cipher_format:erl_cipher_suite()].
+                            [erl_cipher_suite()]) -> 
+                                   [erl_cipher_suite()].
 %% Description: Make <Preferred> suites become the most prefered
 %%      suites that is put them at the head of the cipher suite list
 %%      and remove them from <Suites> if present. <Preferred> may be a
@@ -515,10 +855,10 @@ prepend_cipher_suites(Filters, Suites) ->
     Preferred = filter_cipher_suites(Suites, Filters), 
     Preferred ++ (Suites -- Preferred).
 %%--------------------------------------------------------------------
--spec append_cipher_suites(Deferred :: [ssl_cipher_format:erl_cipher_suite()] | 
+-spec append_cipher_suites(Deferred :: [erl_cipher_suite()] | 
                                        [{key_exchange | cipher | mac | prf, fun()}],
-                           [ssl_cipher_format:erl_cipher_suite()]) -> 
-                                  [ssl_cipher_format:erl_cipher_suite()].
+                           [erl_cipher_suite()]) -> 
+                                  [erl_cipher_suite()].
 %% Description: Make <Deferred> suites suites become the 
 %% least prefered suites that is put them at the end of the cipher suite list
 %% and removed them from <Suites> if present.
@@ -540,8 +880,8 @@ eccs() ->
     eccs_filter_supported(Curves).
 
 %%--------------------------------------------------------------------
--spec eccs(tls_record:tls_version() | tls_record:tls_atom_version() |
-           dtls_record:dtls_version() | dtls_record:dtls_atom_version()) ->
+-spec eccs(tls_record:tls_atom_version() |
+           ssl_record:ssl_version() | dtls_record:dtls_atom_version()) ->
                   tls_v1:curves().
 %% Description: returns the curves supported for a given version of
 %% ssl/tls.
@@ -568,6 +908,20 @@ eccs_filter_supported(Curves) ->
                  Curves).
 
 %%--------------------------------------------------------------------
+-spec groups() -> tls_v1:supported_groups().
+%% Description: returns all supported groups (TLS 1.3 and later)
+%%--------------------------------------------------------------------
+groups() ->
+    tls_v1:groups(4).
+
+%%--------------------------------------------------------------------
+-spec groups(default) -> tls_v1:supported_groups().
+%% Description: returns the default groups (TLS 1.3 and later)
+%%--------------------------------------------------------------------
+groups(default) ->
+    tls_v1:default_groups(4).
+
+%%--------------------------------------------------------------------
 -spec getopts(#sslsocket{}, [gen_tcp:option_name()]) ->
 		     {ok, [gen_tcp:option()]} | {error, reason()}.
 %%
@@ -585,7 +939,7 @@ getopts(#sslsocket{pid = {dtls, #config{transport_info = {Transport,_,_,_}}}} =
 	_:Error ->
 	    {error, {options, {socket_options, OptionTags, Error}}}
     end;
-getopts(#sslsocket{pid = {_,  #config{transport_info = {Transport,_,_,_}}}} = ListenSocket,
+getopts(#sslsocket{pid = {_,  #config{transport_info = {Transport,_,_,_,_}}}} = ListenSocket,
 	OptionTags) when is_list(OptionTags) ->
     try tls_socket:getopts(Transport, ListenSocket, OptionTags) of
 	{ok, _} = Result ->
@@ -642,7 +996,7 @@ setopts(#sslsocket{pid = {dtls, #config{transport_info = {Transport,_,_,_}}}} =
 	_:Error ->
 	    {error, {options, {socket_options, Options, Error}}}
     end;
-setopts(#sslsocket{pid = {_, #config{transport_info = {Transport,_,_,_}}}} = ListenSocket, Options) when is_list(Options) ->
+setopts(#sslsocket{pid = {_, #config{transport_info = {Transport,_,_,_,_}}}} = ListenSocket, Options) when is_list(Options) ->
     try tls_socket:setopts(Transport, ListenSocket, Options) of
 	ok ->
 	    ok;
@@ -686,8 +1040,9 @@ getstat(#sslsocket{pid = [Pid|_], fd = {Transport, Socket, _, _}}, Options) when
 %%
 %% Description: Same as gen_tcp:shutdown/2
 %%--------------------------------------------------------------------
-shutdown(#sslsocket{pid = {Listen, #config{transport_info = {Transport,_, _, _}}}},
+shutdown(#sslsocket{pid = {Listen, #config{transport_info = Info}}},
 	 How) when is_port(Listen) ->
+    Transport = element(1, Info),
     Transport:shutdown(Listen, How);
 shutdown(#sslsocket{pid = {dtls,_}},_) ->
     {error, enotconn};
@@ -699,13 +1054,13 @@ shutdown(#sslsocket{pid = [Pid|_]}, How) when is_pid(Pid) ->
 %%
 %% Description: Same as inet:sockname/1
 %%--------------------------------------------------------------------
-sockname(#sslsocket{pid = {Listen,  #config{transport_info = {Transport, _, _, _}}}}) when is_port(Listen) ->
+sockname(#sslsocket{pid = {Listen,  #config{transport_info = {Transport,_,_,_,_}}}}) when is_port(Listen) ->
     tls_socket:sockname(Transport, Listen);
 sockname(#sslsocket{pid = {dtls, #config{dtls_handler = {Pid, _}}}}) ->
     dtls_packet_demux:sockname(Pid);
-sockname(#sslsocket{pid = [Pid|_], fd = {Transport, Socket, _}}) when is_pid(Pid) ->
+sockname(#sslsocket{pid = [Pid|_], fd = {Transport, Socket,_}}) when is_pid(Pid) ->
     dtls_socket:sockname(Transport, Socket);
-sockname(#sslsocket{pid = [Pid| _], fd = {Transport, Socket, _, _}}) when is_pid(Pid) ->
+sockname(#sslsocket{pid = [Pid| _], fd = {Transport, Socket,_,_}}) when is_pid(Pid) ->
     tls_socket:sockname(Transport, Socket).
 
 %%---------------------------------------------------------------
@@ -723,7 +1078,7 @@ versions() ->
     SupportedDTLSVsns = [dtls_record:protocol_version(Vsn) || Vsn <- DTLSVsns],
     AvailableTLSVsns = ?ALL_AVAILABLE_VERSIONS,
     AvailableDTLSVsns = ?ALL_AVAILABLE_DATAGRAM_VERSIONS,
-    [{ssl_app, ?VSN}, {supported, SupportedTLSVsns}, 
+    [{ssl_app, "9.2"}, {supported, SupportedTLSVsns}, 
      {supported_dtls, SupportedDTLSVsns}, 
      {available, AvailableTLSVsns}, 
      {available_dtls, AvailableDTLSVsns}].
@@ -783,8 +1138,8 @@ format_error(Reason) when is_list(Reason) ->
     Reason;
 format_error(closed) ->
     "TLS connection is closed";
-format_error({tls_alert, Description}) ->
-    "TLS Alert: " ++ Description;
+format_error({tls_alert, {_, Description}}) ->
+    Description;
 format_error({options,{FileType, File, Reason}}) when FileType == cacertfile;
 						      FileType == certfile;
 						      FileType == keyfile;
@@ -813,7 +1168,7 @@ tls_version({254, _} = Version) ->
 
 
 %%--------------------------------------------------------------------
--spec suite_to_str(ssl_cipher_format:erl_cipher_suite()) -> string().
+-spec suite_to_str(erl_cipher_suite()) -> string().
 %%
 %% Description: Return the string representation of a cipher suite.
 %%--------------------------------------------------------------------
@@ -839,7 +1194,7 @@ supported_suites(all, Version) ->
 supported_suites(anonymous, Version) -> 
     ssl_cipher:anonymous_suites(Version).
 
-do_listen(Port, #config{transport_info = {Transport, _, _, _}} = Config, tls_connection) ->
+do_listen(Port, #config{transport_info = {Transport, _, _, _,_}} = Config, tls_connection) ->
     tls_socket:listen(Transport, Port, Config);
 
 do_listen(Port,  Config, dtls_connection) ->
@@ -880,9 +1235,10 @@ handle_options(Opts0, #ssl_options{protocol = Protocol, cacerts = CaCerts0,
 	[] ->
 	    new_ssl_options(SslOpts1, NewVerifyOpts, RecordCB);
 	Value ->
-	    Versions = [RecordCB:protocol_version(Vsn) || Vsn <- Value],
+            Versions0 = [RecordCB:protocol_version(Vsn) || Vsn <- Value],
+            Versions1 = lists:sort(fun RecordCB:is_higher/2, Versions0),
 	    new_ssl_options(proplists:delete(versions, SslOpts1), 
-			    NewVerifyOpts#ssl_options{versions = Versions}, record_cb(Protocol))
+			    NewVerifyOpts#ssl_options{versions = Versions1}, record_cb(Protocol))
     end;
 
 %% Handle all options in listen and connect
@@ -891,22 +1247,21 @@ handle_options(Opts0, Role, Host) ->
 			     {list, [{mode, list}]}], Opts0),
     assert_proplist(Opts),
     RecordCb = record_cb(Opts),
-
-    ReuseSessionFun = fun(_, _, _, _) -> true end,
     CaCerts = handle_option(cacerts, Opts, undefined),
 
     {Verify, FailIfNoPeerCert, CaCertDefault, VerifyFun, PartialChainHanlder, VerifyClientOnce} =
 	handle_verify_options(Opts, CaCerts),
     
     CertFile = handle_option(certfile, Opts, <<>>),
-    RecordCb = record_cb(Opts),
     
-    Versions = case handle_option(versions, Opts, []) of
-		   [] ->
-		       RecordCb:supported_protocol_versions();
-		   Vsns  ->
-		       [RecordCb:protocol_version(Vsn) || Vsn <- Vsns]
-	       end,
+    [HighestVersion|_] = Versions =
+        case handle_option(versions, Opts, []) of
+            [] ->
+                RecordCb:supported_protocol_versions();
+            Vsns  ->
+                Versions0 = [RecordCb:protocol_version(Vsn) || Vsn <- Vsns],
+                lists:sort(fun RecordCb:is_higher/2, Versions0)
+        end,
 
     Protocol = handle_option(protocol, Opts, tls),
 
@@ -917,7 +1272,7 @@ handle_options(Opts0, Role, Host) ->
             ok
     end,
    
-    SSLOptions = #ssl_options{
+    SSLOptions0 = #ssl_options{
 		    versions   = Versions,
 		    verify     = validate_option(verify, Verify),
 		    verify_fun = VerifyFun,
@@ -938,16 +1293,31 @@ handle_options(Opts0, Role, Host) ->
 		    psk_identity = handle_option(psk_identity, Opts, undefined),
 		    srp_identity = handle_option(srp_identity, Opts, undefined),
 		    ciphers    = handle_cipher_option(proplists:get_value(ciphers, Opts, []), 
-						      RecordCb:highest_protocol_version(Versions)),
+						      HighestVersion),
 		    eccs       = handle_eccs_option(proplists:get_value(eccs, Opts, eccs()),
-						      RecordCb:highest_protocol_version(Versions)),
-		    signature_algs = handle_hashsigns_option(proplists:get_value(signature_algs, Opts, 
-									     default_option_role(server, 
-												 tls_v1:default_signature_algs(Versions), Role)),
-							 tls_version(RecordCb:highest_protocol_version(Versions))), 
-		    %% Server side option
-		    reuse_session = handle_option(reuse_session, Opts, ReuseSessionFun),
-		    reuse_sessions = handle_option(reuse_sessions, Opts, true),
+                                                    HighestVersion),
+                    supported_groups = handle_supported_groups_option(
+                                         proplists:get_value(supported_groups, Opts, groups(default)),
+                                         HighestVersion),
+		    signature_algs =
+                         handle_hashsigns_option(
+                           proplists:get_value(
+                             signature_algs,
+                             Opts,
+                             default_option_role_sign_algs(server,
+                                                 tls_v1:default_signature_algs(HighestVersion),
+                                                 Role,
+                                                 HighestVersion)),
+                           tls_version(HighestVersion)),
+                    signature_algs_cert =
+                         handle_signature_algorithms_option(
+                           proplists:get_value(
+                             signature_algs_cert,
+                             Opts,
+                             undefined),  %% Do not send by default
+                           tls_version(HighestVersion)),
+                    reuse_sessions = handle_reuse_sessions_option(reuse_sessions, Opts, Role),
+		    reuse_session = handle_reuse_session_option(reuse_session, Opts, Role),
 		    secure_renegotiate = handle_option(secure_renegotiate, Opts, true),
 		    client_renegotiation = handle_option(client_renegotiation, Opts, 
 							 default_option_role(server, true, Role), 
@@ -964,7 +1334,6 @@ handle_options(Opts0, Role, Host) ->
 		    next_protocol_selector =
 			make_next_protocol_selector(
 			  handle_option(client_preferred_next_protocols, Opts, undefined)),
-		    log_alert = handle_option(log_alert, Opts, true),
 		    server_name_indication = handle_option(server_name_indication, Opts, 
                                                            default_option_role(client,
                                                                                server_name_indication_default(Host), Role)),
@@ -990,8 +1359,12 @@ handle_options(Opts0, Role, Host) ->
                     handshake = handle_option(handshake, Opts, full),
                     customize_hostname_check = handle_option(customize_hostname_check, Opts, [])
 		   },
+    LogLevel = handle_option(log_alert, Opts, true),
+    SSLOptions = SSLOptions0#ssl_options{
+                   log_level = handle_option(log_level, Opts, LogLevel)
+                  },
 
-    CbInfo  = proplists:get_value(cb_info, Opts, default_cb_info(Protocol)),
+    CbInfo  = handle_option(cb_info, Opts, default_cb_info(Protocol)),
     SslOptions = [protocol, versions, verify, verify_fun, partial_chain,
 		  fail_if_no_peer_cert, verify_client_once,
 		  depth, cert, certfile, key, keyfile,
@@ -1001,10 +1374,12 @@ handle_options(Opts0, Role, Host) ->
 		  cb_info, renegotiate_at, secure_renegotiate, hibernate_after,
 		  erl_dist, alpn_advertised_protocols, sni_hosts, sni_fun,
 		  alpn_preferred_protocols, next_protocols_advertised,
-		  client_preferred_next_protocols, log_alert,
+		  client_preferred_next_protocols, log_alert, log_level,
 		  server_name_indication, honor_cipher_order, padding_check, crl_check, crl_cache,
-		  fallback, signature_algs, eccs, honor_ecc_order, beast_mitigation,
-                  max_handshake_size, handshake, customize_hostname_check],
+		  fallback, signature_algs, signature_algs_cert, eccs, honor_ecc_order,
+                  beast_mitigation, max_handshake_size, handshake, customize_hostname_check,
+                  supported_groups],
+
     SockOpts = lists:foldl(fun(Key, PropList) ->
 				   proplists:delete(Key, PropList)
 			   end, Opts, SslOptions),
@@ -1033,6 +1408,10 @@ handle_option(sni_fun, Opts, Default) ->
         _ ->
             throw({error, {conflict_options, [sni_fun, sni_hosts]}})
     end;
+handle_option(cb_info, Opts, Default) ->
+    CbInfo = proplists:get_value(cb_info, Opts, Default),
+    true = validate_option(cb_info, CbInfo),
+    handle_cb_info(CbInfo, Default);
 handle_option(OptionName, Opts, Default) ->
     validate_option(OptionName,
 		    proplists:get_value(OptionName, Opts, Default)).
@@ -1138,11 +1517,16 @@ validate_option(srp_identity, {Username, Password})
     {unicode:characters_to_binary(Username),
      unicode:characters_to_binary(Password)};
 
+validate_option(reuse_session, undefined) ->
+    undefined;
 validate_option(reuse_session, Value) when is_function(Value) ->
     Value;
+validate_option(reuse_session, Value) when is_binary(Value) ->
+    Value;
 validate_option(reuse_sessions, Value) when is_boolean(Value) ->
     Value;
-
+validate_option(reuse_sessions, save = Value) ->
+    Value;
 validate_option(secure_renegotiate, Value) when is_boolean(Value) ->
     Value;
 validate_option(client_renegotiation, Value) when is_boolean(Value) ->
@@ -1180,7 +1564,20 @@ validate_option(client_preferred_next_protocols, {Precedence, PreferredProtocols
     Value;
 validate_option(client_preferred_next_protocols, undefined) ->
     undefined;
-validate_option(log_alert, Value) when is_boolean(Value) ->
+validate_option(log_alert, true) ->
+    notice;
+validate_option(log_alert, false) ->
+    warning;
+validate_option(log_level, Value) when
+      is_atom(Value) andalso
+      (Value =:= emergency orelse
+       Value =:= alert orelse
+       Value =:= critical orelse
+       Value =:= error orelse
+       Value =:= warning orelse
+       Value =:= notice orelse
+       Value =:= info orelse
+       Value =:= debug) ->
     Value;
 validate_option(next_protocols_advertised, Value) when is_list(Value) ->
     validate_binary_list(next_protocols_advertised, Value),
@@ -1249,22 +1646,85 @@ validate_option(handshake, full = Value) ->
     Value;
 validate_option(customize_hostname_check, Value) when is_list(Value) ->
     Value;
+validate_option(cb_info, {V1, V2, V3, V4}) when is_atom(V1),
+                                                is_atom(V2),
+                                                is_atom(V3),
+                                                is_atom(V4)
+                                                ->
+    true;
+validate_option(cb_info, {V1, V2, V3, V4, V5}) when is_atom(V1),
+                                                    is_atom(V2),
+                                                    is_atom(V3),
+                                                    is_atom(V4),
+                                                    is_atom(V5)
+                                                ->
+    true;
+validate_option(cb_info, _) ->
+    false;
 validate_option(Opt, Value) ->
     throw({error, {options, {Opt, Value}}}).
 
+handle_cb_info({V1, V2, V3, V4}, {_,_,_,_,_}) ->
+    {V1,V2,V3,V4, list_to_atom(atom_to_list(V2) ++ "passive")};
+handle_cb_info(CbInfo, _) ->
+    CbInfo.
+
+handle_hashsigns_option(Value, Version) when is_list(Value)
+                                             andalso Version >= {3, 4} ->
+    case tls_v1:signature_schemes(Version, Value) of
+	[] ->
+	    throw({error, {options,
+                           no_supported_signature_schemes,
+                           {signature_algs, Value}}});
+	_ ->
+	    Value
+    end;
 handle_hashsigns_option(Value, Version) when is_list(Value) 
-                                             andalso Version >= {3, 3} ->
+                                             andalso Version =:= {3, 3} ->
     case tls_v1:signature_algs(Version, Value) of
 	[] ->
 	    throw({error, {options, no_supported_algorithms, {signature_algs, Value}}});
 	_ ->	
 	    Value
     end;
-handle_hashsigns_option(_, Version) when Version >= {3, 3} ->
+handle_hashsigns_option(_, Version) when Version =:= {3, 3} ->
     handle_hashsigns_option(tls_v1:default_signature_algs(Version), Version);
 handle_hashsigns_option(_, _Version) ->
     undefined.
 
+handle_signature_algorithms_option(Value, Version) when is_list(Value)
+                                                        andalso Version >= {3, 4} ->
+    case tls_v1:signature_schemes(Version, Value) of
+	[] ->
+	    throw({error, {options,
+                           no_supported_signature_schemes,
+                           {signature_algs_cert, Value}}});
+	_ ->
+	    Value
+    end;
+handle_signature_algorithms_option(_, _Version) ->
+    undefined.
+
+handle_reuse_sessions_option(Key, Opts, client) ->
+    Value = proplists:get_value(Key, Opts, true),
+    validate_option(Key, Value),
+    Value;
+handle_reuse_sessions_option(Key, Opts0, server) ->
+    Opts = proplists:delete({Key, save}, Opts0),
+    Value = proplists:get_value(Key, Opts, true),
+    validate_option(Key, Value),
+    Value.
+
+handle_reuse_session_option(Key, Opts, client) ->
+    Value = proplists:get_value(Key, Opts, undefined),
+    validate_option(Key, Value),
+    Value;
+handle_reuse_session_option(Key, Opts, server) ->
+    ReuseSessionFun = fun(_, _, _, _) -> true end,
+    Value = proplists:get_value(Key, Opts, ReuseSessionFun),
+    validate_option(Key, Value),
+    Value.
+
 validate_options([]) ->
 	[];
 validate_options([{Opt, Value} | Tail]) ->
@@ -1288,7 +1748,8 @@ validate_binary_list(Opt, List) ->
         end, List).
 validate_versions([], Versions) ->
     Versions;
-validate_versions([Version | Rest], Versions) when Version == 'tlsv1.2';
+validate_versions([Version | Rest], Versions) when Version == 'tlsv1.3';
+                                                   Version == 'tlsv1.2';
                                                    Version == 'tlsv1.1';
                                                    Version == tlsv1;
                                                    Version == sslv3 ->
@@ -1301,10 +1762,11 @@ validate_versions([Ver| _], Versions) ->
 
 tls_validate_versions([], Versions) ->
     Versions;
-tls_validate_versions([Version | Rest], Versions) when Version == 'tlsv1.2';
-                                                   Version == 'tlsv1.1';
-                                                   Version == tlsv1;
-                                                   Version == sslv3 ->
+tls_validate_versions([Version | Rest], Versions) when Version == 'tlsv1.3';
+                                                       Version == 'tlsv1.2';
+                                                       Version == 'tlsv1.1';
+                                                       Version == tlsv1;
+                                                       Version == sslv3 ->
     tls_validate_versions(Rest, Versions);                  
 tls_validate_versions([Ver| _], Versions) ->
     throw({error, {options, {Ver, {versions, Versions}}}}).
@@ -1410,6 +1872,16 @@ handle_eccs_option(Value, Version) when is_list(Value) ->
         error:_ -> throw({error, {options, {eccs, Value}}})
     end.
 
+handle_supported_groups_option(Value, Version) when is_list(Value) ->
+    {_Major, Minor} = tls_version(Version),
+    try tls_v1:groups(Minor, Value) of
+        Groups -> #supported_groups{supported_groups = Groups}
+    catch
+        exit:_ -> throw({error, {options, {supported_groups, Value}}});
+        error:_ -> throw({error, {options, {supported_groups, Value}}})
+    end.
+
+
 unexpected_format(Error) ->
     lists:flatten(io_lib:format("Unexpected error: ~p", [Error])).
 
@@ -1555,8 +2027,10 @@ new_ssl_options([{next_protocols_advertised, Value} | Rest], #ssl_options{} = Op
 new_ssl_options([{client_preferred_next_protocols, Value} | Rest], #ssl_options{} = Opts, RecordCB) -> 
     new_ssl_options(Rest, Opts#ssl_options{next_protocol_selector = 
 					       make_next_protocol_selector(validate_option(client_preferred_next_protocols, Value))}, RecordCB);
-new_ssl_options([{log_alert, Value} | Rest], #ssl_options{} = Opts, RecordCB) -> 
-    new_ssl_options(Rest, Opts#ssl_options{log_alert = validate_option(log_alert, Value)}, RecordCB);
+new_ssl_options([{log_alert, Value} | Rest], #ssl_options{} = Opts, RecordCB) ->
+    new_ssl_options(Rest, Opts#ssl_options{log_level = validate_option(log_alert, Value)}, RecordCB);
+new_ssl_options([{log_level, Value} | Rest], #ssl_options{} = Opts, RecordCB) ->
+    new_ssl_options(Rest, Opts#ssl_options{log_level = validate_option(log_level, Value)}, RecordCB);
 new_ssl_options([{server_name_indication, Value} | Rest], #ssl_options{} = Opts, RecordCB) -> 
     new_ssl_options(Rest, Opts#ssl_options{server_name_indication = validate_option(server_name_indication, Value)}, RecordCB);
 new_ssl_options([{honor_cipher_order, Value} | Rest], #ssl_options{} = Opts, RecordCB) -> 
@@ -1569,12 +2043,26 @@ new_ssl_options([{eccs, Value} | Rest], #ssl_options{} = Opts, RecordCB) ->
 			 handle_eccs_option(Value, RecordCB:highest_protocol_version())
 		    },
 		    RecordCB);
+new_ssl_options([{supported_groups, Value} | Rest], #ssl_options{} = Opts, RecordCB) ->
+    new_ssl_options(Rest,
+		    Opts#ssl_options{supported_groups =
+			 handle_supported_groups_option(Value, RecordCB:highest_protocol_version())
+		    },
+		    RecordCB);
 new_ssl_options([{signature_algs, Value} | Rest], #ssl_options{} = Opts, RecordCB) -> 
     new_ssl_options(Rest, 
 		    Opts#ssl_options{signature_algs = 
 					 handle_hashsigns_option(Value, 
 								 tls_version(RecordCB:highest_protocol_version()))}, 
 		    RecordCB);
+new_ssl_options([{signature_algs_cert, Value} | Rest], #ssl_options{} = Opts, RecordCB) ->
+    new_ssl_options(
+      Rest,
+      Opts#ssl_options{signature_algs_cert =
+                           handle_signature_algorithms_option(
+                             Value,
+                             tls_version(RecordCB:highest_protocol_version()))},
+      RecordCB);
 new_ssl_options([{protocol, dtls = Value} | Rest], #ssl_options{} = Opts, dtls_record = RecordCB) -> 
     new_ssl_options(Rest, Opts#ssl_options{protocol = Value}, RecordCB);
 new_ssl_options([{protocol, tls = Value} | Rest], #ssl_options{} = Opts, tls_record = RecordCB) -> 
@@ -1636,13 +2124,22 @@ handle_verify_options(Opts, CaCerts) ->
 	    throw({error, {options, {verify, Value}}})
     end.
 
+%% Added to handle default values for signature_algs in TLS 1.3
+default_option_role_sign_algs(_, Value, _, Version) when Version >= {3,4} ->
+    Value;
+default_option_role_sign_algs(Role, Value, Role, _) ->
+    Value;
+default_option_role_sign_algs(_, _, _, _) ->
+    undefined.
+
 default_option_role(Role, Value, Role) ->
     Value;
 default_option_role(_,_,_) ->
     undefined.
 
+
 default_cb_info(tls) ->
-    {gen_tcp, tcp, tcp_closed, tcp_error};
+    {gen_tcp, tcp, tcp_closed, tcp_error, tcp_passive};
 default_cb_info(dtls) ->
     {gen_udp, udp, udp_closed, udp_error}.
 
diff --git a/lib/ssl/src/ssl_alert.erl b/lib/ssl/src/ssl_alert.erl
index 34e9797f1f..06b1b005a5 100644
--- a/lib/ssl/src/ssl_alert.erl
+++ b/lib/ssl/src/ssl_alert.erl
@@ -48,8 +48,8 @@ decode(Bin) ->
     decode(Bin, [], 0).
 
 %%--------------------------------------------------------------------
--spec reason_code(#alert{}, client | server) ->
-                         closed | {tls_alert, unicode:chardata()}.
+%% -spec reason_code(#alert{}, client | server) ->
+%%                          {tls_alert, unicode:chardata()} | closed.
 %-spec reason_code(#alert{}, client | server) -> closed | {essl, string()}.
 %%
 %% Description: Returns the error reason that will be returned to the
@@ -58,8 +58,10 @@ decode(Bin) ->
 
 reason_code(#alert{description = ?CLOSE_NOTIFY}, _) ->
     closed;
-reason_code(#alert{description = Description}, _) ->
-    {tls_alert, string:casefold(description_txt(Description))}.
+reason_code(#alert{description = Description, role = Role} = Alert, Role) ->
+    {tls_alert, {description_atom(Description), own_alert_txt(Alert)}};
+reason_code(#alert{description = Description} = Alert, Role) ->
+    {tls_alert, {description_atom(Description), alert_txt(Alert#alert{role = Role})}}.
 
 %%--------------------------------------------------------------------
 -spec own_alert_txt(#alert{}) -> string().
@@ -159,10 +161,14 @@ description_txt(?INSUFFICIENT_SECURITY) ->
     "Insufficient Security";
 description_txt(?INTERNAL_ERROR) ->
     "Internal Error";
+description_txt(?INAPPROPRIATE_FALLBACK) ->
+    "Inappropriate Fallback";
 description_txt(?USER_CANCELED) ->
     "User Canceled";
 description_txt(?NO_RENEGOTIATION) ->
     "No Renegotiation";
+description_txt(?MISSING_EXTENSION) ->
+    "Missing extension";
 description_txt(?UNSUPPORTED_EXTENSION) ->
     "Unsupported Extension";
 description_txt(?CERTIFICATE_UNOBTAINABLE) ->
@@ -175,9 +181,80 @@ description_txt(?BAD_CERTIFICATE_HASH_VALUE) ->
     "Bad Certificate Hash Value";
 description_txt(?UNKNOWN_PSK_IDENTITY) ->
     "Unknown Psk Identity";
-description_txt(?INAPPROPRIATE_FALLBACK) ->
-    "Inappropriate Fallback";
+description_txt(?CERTIFICATE_REQUIRED) ->
+    "Certificate required";
 description_txt(?NO_APPLICATION_PROTOCOL) ->
     "No application protocol";
 description_txt(Enum) ->
     lists:flatten(io_lib:format("unsupported/unknown alert: ~p", [Enum])).
+
+description_atom(?CLOSE_NOTIFY) ->
+    close_notify;
+description_atom(?UNEXPECTED_MESSAGE) ->
+    unexpected_message;
+description_atom(?BAD_RECORD_MAC) ->
+    bad_record_mac;
+description_atom(?DECRYPTION_FAILED_RESERVED) ->
+    decryption_failed_reserved;
+description_atom(?RECORD_OVERFLOW) ->
+    record_overflow;
+description_atom(?DECOMPRESSION_FAILURE) ->
+    decompression_failure;
+description_atom(?HANDSHAKE_FAILURE) ->
+    handshake_failure;
+description_atom(?NO_CERTIFICATE_RESERVED) ->
+    no_certificate_reserved;
+description_atom(?BAD_CERTIFICATE) ->
+    bad_certificate;
+description_atom(?UNSUPPORTED_CERTIFICATE) ->
+    unsupported_certificate;
+description_atom(?CERTIFICATE_REVOKED) ->
+    certificate_revoked;
+description_atom(?CERTIFICATE_EXPIRED) ->
+    certificate_expired;
+description_atom(?CERTIFICATE_UNKNOWN) ->
+    certificate_unknown;
+description_atom(?ILLEGAL_PARAMETER) ->
+    illegal_parameter;
+description_atom(?UNKNOWN_CA) ->
+    unknown_ca;
+description_atom(?ACCESS_DENIED) ->
+    access_denied;
+description_atom(?DECODE_ERROR) ->
+    decode_error;
+description_atom(?DECRYPT_ERROR) ->
+    decrypt_error;
+description_atom(?EXPORT_RESTRICTION) ->
+    export_restriction;
+description_atom(?PROTOCOL_VERSION) ->
+    protocol_version;
+description_atom(?INSUFFICIENT_SECURITY) ->
+    insufficient_security;
+description_atom(?INTERNAL_ERROR) ->
+    internal_error;
+description_atom(?INAPPROPRIATE_FALLBACK) ->
+    inappropriate_fallback;
+description_atom(?USER_CANCELED) ->
+    user_canceled;
+description_atom(?NO_RENEGOTIATION) ->
+    no_renegotiation;
+description_atom(?MISSING_EXTENSION) ->
+    missing_extension;
+description_atom(?UNSUPPORTED_EXTENSION) ->
+    unsupported_extension;
+description_atom(?CERTIFICATE_UNOBTAINABLE) ->
+    certificate_unobtainable;
+description_atom(?UNRECOGNISED_NAME) ->
+    unrecognised_name;
+description_atom(?BAD_CERTIFICATE_STATUS_RESPONSE) ->
+    bad_certificate_status_response;
+description_atom(?BAD_CERTIFICATE_HASH_VALUE) ->
+    bad_certificate_hash_value;
+description_atom(?UNKNOWN_PSK_IDENTITY) ->
+    unknown_psk_identity;
+description_atom(?CERTIFICATE_REQUIRED) ->
+    certificate_required;
+description_atom(?NO_APPLICATION_PROTOCOL) ->
+    no_application_protocol;
+description_atom(_) ->
+    'unsupported/unknown_alert'.
diff --git a/lib/ssl/src/ssl_alert.hrl b/lib/ssl/src/ssl_alert.hrl
index b23123905e..9b2322da17 100644
--- a/lib/ssl/src/ssl_alert.hrl
+++ b/lib/ssl/src/ssl_alert.hrl
@@ -29,6 +29,9 @@
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %%% Alert protocol - RFC 2246 section 7.2
+%%% updated by RFC 8486 with
+%%% missing_extension(109),
+%%% certificate_required(116),
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 %% AlertLevel
@@ -100,12 +103,14 @@
 -define(INAPPROPRIATE_FALLBACK, 86).
 -define(USER_CANCELED, 90).
 -define(NO_RENEGOTIATION, 100).
+-define(MISSING_EXTENSION, 109).
 -define(UNSUPPORTED_EXTENSION, 110).
 -define(CERTIFICATE_UNOBTAINABLE, 111).
 -define(UNRECOGNISED_NAME, 112).
 -define(BAD_CERTIFICATE_STATUS_RESPONSE, 113).
 -define(BAD_CERTIFICATE_HASH_VALUE, 114).
 -define(UNKNOWN_PSK_IDENTITY, 115).
+-define(CERTIFICATE_REQUIRED, 116).
 -define(NO_APPLICATION_PROTOCOL, 120).
 
 -define(ALERT_REC(Level,Desc), #alert{level=Level,description=Desc,where={?FILE, ?LINE}}).
diff --git a/lib/ssl/src/ssl_api.hrl b/lib/ssl/src/ssl_api.hrl
index 7b7b1cbcd9..f4594912bd 100644
--- a/lib/ssl/src/ssl_api.hrl
+++ b/lib/ssl/src/ssl_api.hrl
@@ -21,56 +21,7 @@
 -ifndef(ssl_api).
 -define(ssl_api, true).
 
--include("ssl_cipher.hrl").
-
-%% Visible in API
--export_type([connect_option/0, listen_option/0, ssl_option/0, transport_option/0,
-	      prf_random/0, sslsocket/0]).
-
-
 %% Looks like it does for backwards compatibility reasons
 -record(sslsocket, {fd = nil, pid = nil}).
 
-
--type sslsocket()                :: #sslsocket{}.
--type connect_option()           :: socket_connect_option() | ssl_option() | transport_option().
--type socket_connect_option()    :: gen_tcp:connect_option().
--type listen_option()            :: socket_listen_option() | ssl_option() | transport_option().
--type socket_listen_option()     :: gen_tcp:listen_option().
-
--type ssl_option()    :: {versions, ssl_record:ssl_atom_version()} |
-			 {verify, verify_type()} |
-			 {verify_fun, {fun(), InitialUserState::term()}} |
-                         {fail_if_no_peer_cert, boolean()} | {depth, integer()} |
-                         {cert, Der::binary()} | {certfile, path()} |
-                         {key, {private_key_type(), Der::binary()}} |
-                         {keyfile, path()} | {password, string()} | {cacerts, [Der::binary()]} |
-                         {cacertfile, path()} | {dh, Der::binary()} | {dhfile, path()} |
-                         {user_lookup_fun, {fun(), InitialUserState::term()}} |
-                         {psk_identity, string()} |
-                         {srp_identity, {string(), string()}} |
-                         {ciphers, ciphers()} | {ssl_imp, ssl_imp()} | {reuse_sessions, boolean()} |
-                         {reuse_session, fun()} | {hibernate_after, integer()|undefined} |
-                         {alpn_advertised_protocols, [binary()]} |
-                         {alpn_preferred_protocols, [binary()]} |
-                         {next_protocols_advertised, list(binary())} |
-                         {client_preferred_next_protocols, binary(), client | server, list(binary())}.
-
--type verify_type()  :: verify_none | verify_peer.
--type path()         :: string().
--type ciphers()      :: [ssl_cipher_format:erl_cipher_suite()] |
-			string(). % (according to old API)
--type ssl_imp()      :: new | old.
-
--type transport_option() :: {cb_info, {CallbackModule::atom(), DataTag::atom(),
-				       ClosedTag::atom(), ErrTag::atom()}}.
--type prf_random() :: client_random | server_random.
-
--type private_key_type() :: rsa | %% Backwards compatibility
-                            dsa | %% Backwards compatibility
-                            'RSAPrivateKey' |
-                            'DSAPrivateKey' |
-                            'ECPrivateKey' |
-                            'PrivateKeyInfo'.
-
 -endif. % -ifdef(ssl_api).
diff --git a/lib/ssl/src/ssl_app.erl b/lib/ssl/src/ssl_app.erl
index 62e8765d4a..9e6d676bef 100644
--- a/lib/ssl/src/ssl_app.erl
+++ b/lib/ssl/src/ssl_app.erl
@@ -29,9 +29,26 @@
 -export([start/2, stop/1]).
 
 start(_Type, _StartArgs) ->
+    start_logger(),
     ssl_sup:start_link().
 
 stop(_State) ->
+    stop_logger(),
     ok.
 
+%%
+%% Description: Start SSL logger
+start_logger() ->
+    Config = #{level => debug,
+               filter_default => stop,
+               formatter => {ssl_logger, #{}}},
+    Filter = {fun logger_filters:domain/2,{log,sub,[otp,ssl]}},
+    logger:add_handler(ssl_handler, logger_std_h, Config),
+    logger:add_handler_filter(ssl_handler, filter_non_ssl, Filter),
+    logger:set_application_level(ssl, debug).
 
+%%
+%% Description: Stop SSL logger
+stop_logger() ->
+    logger:unset_application_level(ssl),
+    logger:remove_handler(ssl_handler).
diff --git a/lib/ssl/src/ssl_certificate.erl b/lib/ssl/src/ssl_certificate.erl
index 549e557beb..9997f5e0c8 100644
--- a/lib/ssl/src/ssl_certificate.erl
+++ b/lib/ssl/src/ssl_certificate.erl
@@ -71,7 +71,7 @@ trusted_cert_and_path(CertChain, CertDbHandle, CertDbRef, PartialChainHandler) -
     
     case SignedAndIssuerID of
 	{error, issuer_not_found} ->
-	    %% The root CA was not sent and can not be found.
+	    %% The root CA was not sent and cannot be found.
 	    handle_incomplete_chain(Path, PartialChainHandler);
 	{self, _} when length(Path) == 1 ->
 	    {selfsigned_peer, Path};
diff --git a/lib/ssl/src/ssl_cipher.erl b/lib/ssl/src/ssl_cipher.erl
index 54c04c13e5..97878431a6 100644
--- a/lib/ssl/src/ssl_cipher.erl
+++ b/lib/ssl/src/ssl_cipher.erl
@@ -1,7 +1,7 @@
 %
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2007-2018. All Rights Reserved.
+%% Copyright Ericsson AB 2007-2019. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -31,18 +31,24 @@
 -include("ssl_cipher.hrl").
 -include("ssl_handshake.hrl").
 -include("ssl_alert.hrl").
+-include("tls_handshake_1_3.hrl").
 -include_lib("public_key/include/public_key.hrl").
 
--export([security_parameters/2, security_parameters/3, 
-	 cipher_init/3, nonce_seed/2, decipher/6, cipher/5, aead_encrypt/5, aead_decrypt/6,
+-export([security_parameters/2, security_parameters/3, security_parameters_1_3/2,
+	 cipher_init/3, nonce_seed/2, decipher/6, cipher/5, aead_encrypt/6, aead_decrypt/6,
 	 suites/1, all_suites/1,  crypto_support_filters/0,
 	 chacha_suites/1, anonymous_suites/1, psk_suites/1, psk_suites_anon/1, 
          srp_suites/0, srp_suites_anon/0,
 	 rc4_suites/1, des_suites/1, rsa_suites/1, 
          filter/3, filter_suites/1, filter_suites/2,
 	 hash_algorithm/1, sign_algorithm/1, is_acceptable_hash/2, is_fallback/1,
-	 random_bytes/1, calc_mac_hash/4,
-         is_stream_ciphersuite/1]).
+	 random_bytes/1, calc_mac_hash/4, calc_mac_hash/6,
+         is_stream_ciphersuite/1, signature_scheme/1,
+         scheme_to_components/1, hash_size/1, effective_key_bits/1,
+         key_material/1, signature_algorithm_to_scheme/1]).
+
+%% RFC 8446 TLS 1.3
+-export([generate_client_shares/1, generate_server_share/1, add_zero_padding/2]).
 
 -compile(inline).
 
@@ -83,6 +89,15 @@ security_parameters(Version, CipherSuite, SecParams) ->
       prf_algorithm = prf_algorithm(PrfHashAlg, Version),
       hash_size = hash_size(Hash)}.
 
+security_parameters_1_3(SecParams, CipherSuite) ->
+     #{cipher := Cipher, prf := PrfHashAlg} =
+        ssl_cipher_format:suite_definition(CipherSuite),
+    SecParams#security_parameters{
+      cipher_suite = CipherSuite,
+      bulk_cipher_algorithm = bulk_cipher_algorithm(Cipher),
+      prf_algorithm = PrfHashAlg,  %% HKDF hash algorithm
+      cipher_type = ?AEAD}.
+
 %%--------------------------------------------------------------------
 -spec cipher_init(cipher_enum(), binary(), binary()) -> #cipher_state{}.
 %%
@@ -91,13 +106,18 @@ security_parameters(Version, CipherSuite, SecParams) ->
 cipher_init(?RC4, IV, Key) ->
     State = crypto:stream_init(rc4, Key),
     #cipher_state{iv = IV, key = Key, state = State};
-cipher_init(?AES_GCM, IV, Key) ->
+cipher_init(Type, IV, Key) when Type == ?AES_GCM;
+                                Type == ?AES_CCM ->
     <<Nonce:64>> = random_bytes(8),
     #cipher_state{iv = IV, key = Key, nonce = Nonce, tag_len = 16};
+cipher_init(?AES_CCM_8, IV, Key) ->
+    <<Nonce:64>> = random_bytes(8),
+    #cipher_state{iv = IV, key = Key, nonce = Nonce, tag_len = 8};
 cipher_init(?CHACHA20_POLY1305, IV, Key) ->
     #cipher_state{iv = IV, key = Key, tag_len = 16};
 cipher_init(_BCA, IV, Key) ->
-    #cipher_state{iv = IV, key = Key}.
+    %% Initialize random IV cache, not used for aead ciphers
+    #cipher_state{iv = IV, key = Key, state = <<>>}.
 
 nonce_seed(Seed, CipherState) ->
     CipherState#cipher_state{nonce = Seed}.
@@ -112,12 +132,11 @@ nonce_seed(Seed, CipherState) ->
 %% data is calculated and the data plus the HMAC is ecncrypted.
 %%-------------------------------------------------------------------
 cipher(?NULL, CipherState, <<>>, Fragment, _Version) ->
-    GenStreamCipherList = [Fragment, <<>>],
-    {GenStreamCipherList, CipherState};
+    {iolist_to_binary(Fragment), CipherState};
 cipher(?RC4, CipherState = #cipher_state{state = State0}, Mac, Fragment, _Version) ->
     GenStreamCipherList = [Fragment, Mac],
     {State1, T} = crypto:stream_encrypt(State0, GenStreamCipherList),
-    {T, CipherState#cipher_state{state = State1}};
+    {iolist_to_binary(T), CipherState#cipher_state{state = State1}};
 cipher(?DES, CipherState, Mac, Fragment, Version) ->
     block_cipher(fun(Key, IV, T) ->
 			 crypto:block_encrypt(des_cbc, Key, IV, T)
@@ -133,21 +152,24 @@ cipher(?AES_CBC, CipherState, Mac, Fragment, Version) ->
 			 crypto:block_encrypt(aes_cbc256, Key, IV, T)
 		 end, block_size(aes_128_cbc), CipherState, Mac, Fragment, Version).
 
-aead_encrypt(Type, Key, Nonce, Fragment, AdditionalData) ->
-    crypto:block_encrypt(aead_type(Type), Key, Nonce, {AdditionalData, Fragment}).
+aead_encrypt(Type, Key, Nonce, Fragment, AdditionalData, TagLen) ->
+    crypto:block_encrypt(aead_type(Type), Key, Nonce, {AdditionalData, Fragment, TagLen}).
 
 aead_decrypt(Type, Key, Nonce, CipherText, CipherTag, AdditionalData) ->
     crypto:block_decrypt(aead_type(Type), Key, Nonce, {AdditionalData, CipherText, CipherTag}).
 
 aead_type(?AES_GCM) ->
     aes_gcm;
+aead_type(?AES_CCM) ->
+    aes_ccm;
+aead_type(?AES_CCM_8) ->
+    aes_ccm;
 aead_type(?CHACHA20_POLY1305) ->
     chacha20_poly1305.
 
 build_cipher_block(BlockSz, Mac, Fragment) ->
     TotSz = byte_size(Mac) + erlang:iolist_size(Fragment) + 1,
-    {PaddingLength, Padding} = get_padding(TotSz, BlockSz),
-    [Fragment, Mac, PaddingLength, Padding].
+    [Fragment, Mac, padding_with_len(TotSz, BlockSz)].
 
 block_cipher(Fun, BlockSz, #cipher_state{key=Key, iv=IV} = CS0,
 	     Mac, Fragment, {3, N})
@@ -157,14 +179,21 @@ block_cipher(Fun, BlockSz, #cipher_state{key=Key, iv=IV} = CS0,
     NextIV = next_iv(T, IV),
     {T, CS0#cipher_state{iv=NextIV}};
 
-block_cipher(Fun, BlockSz, #cipher_state{key=Key, iv=IV} = CS0,
+block_cipher(Fun, BlockSz, #cipher_state{key=Key, iv=IV, state = IV_Cache0} = CS0,
 	     Mac, Fragment, {3, N})
-  when N == 2; N == 3 ->
-    NextIV = random_iv(IV),
+  when N == 2; N == 3; N == 4 ->
+    IV_Size = byte_size(IV),
+    <<NextIV:IV_Size/binary, IV_Cache/binary>> =
+        case IV_Cache0 of
+            <<>> ->
+                random_bytes(IV_Size bsl 5); % 32 IVs
+            _ ->
+                IV_Cache0
+        end,
     L0 = build_cipher_block(BlockSz, Mac, Fragment),
     L = [NextIV|L0],
     T = Fun(Key, IV, L),
-    {T, CS0#cipher_state{iv=NextIV}}.
+    {T, CS0#cipher_state{iv=NextIV, state = IV_Cache}}.
 
 %%--------------------------------------------------------------------
 -spec decipher(cipher_enum(), integer(), #cipher_state{}, binary(), 
@@ -288,8 +317,9 @@ anonymous_suites({3, N}) ->
     srp_suites_anon() ++ anonymous_suites(N);
 anonymous_suites({254, _} = Version) ->
     dtls_v1:anonymous_suites(Version);
-anonymous_suites(N)
-  when N >= 3 ->
+anonymous_suites(4) ->
+    []; %% Raw public key negotiation may be used instead
+anonymous_suites( 3 = N) ->
     psk_suites_anon(N) ++
     [?TLS_DH_anon_WITH_AES_128_GCM_SHA256,
      ?TLS_DH_anon_WITH_AES_256_GCM_SHA384,
@@ -322,8 +352,9 @@ anonymous_suites(N)  when N == 0;
 %%--------------------------------------------------------------------
 psk_suites({3, N}) ->
     psk_suites(N);
-psk_suites(N)
-  when N >= 3 ->
+psk_suites(4) ->
+    []; %% TODO Add new PSK, PSK_(EC)DHE suites
+psk_suites(3) ->
     [
      ?TLS_RSA_PSK_WITH_AES_256_GCM_SHA384,
      ?TLS_RSA_PSK_WITH_AES_256_CBC_SHA384,
@@ -344,20 +375,32 @@ psk_suites(_) ->
 %%--------------------------------------------------------------------
 psk_suites_anon({3, N}) ->
     psk_suites_anon(N);
-psk_suites_anon(N)
-  when N >= 3 ->
+psk_suites_anon(3) ->
     [
      ?TLS_DHE_PSK_WITH_AES_256_GCM_SHA384,
      ?TLS_PSK_WITH_AES_256_GCM_SHA384,
      ?TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA384,
      ?TLS_DHE_PSK_WITH_AES_256_CBC_SHA384,
      ?TLS_PSK_WITH_AES_256_CBC_SHA384,
+     ?TLS_DHE_PSK_WITH_AES_256_CCM,
+     ?TLS_PSK_DHE_WITH_AES_256_CCM_8,
+     ?TLS_PSK_WITH_AES_256_CCM,
+     ?TLS_PSK_WITH_AES_256_CCM_8,
      ?TLS_ECDHE_PSK_WITH_AES_128_GCM_SHA256,
+     ?TLS_ECDHE_PSK_WITH_AES_128_CCM_SHA256,
+     ?TLS_ECDHE_PSK_WITH_AES_128_CCM_8_SHA256,
      ?TLS_DHE_PSK_WITH_AES_128_GCM_SHA256,
      ?TLS_PSK_WITH_AES_128_GCM_SHA256,
+     ?TLS_ECDHE_PSK_WITH_AES_128_GCM_SHA256,
+     ?TLS_ECDHE_PSK_WITH_AES_128_CCM_8_SHA256,
      ?TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA256,
      ?TLS_DHE_PSK_WITH_AES_128_CBC_SHA256,
-     ?TLS_PSK_WITH_AES_128_CBC_SHA256
+     ?TLS_PSK_WITH_AES_128_CBC_SHA256,
+     ?TLS_DHE_PSK_WITH_AES_128_CCM,
+     ?TLS_PSK_DHE_WITH_AES_128_CCM_8,
+     ?TLS_PSK_WITH_AES_128_CCM,
+     ?TLS_PSK_WITH_AES_128_CCM_8,
+     ?TLS_ECDHE_PSK_WITH_RC4_128_SHA
     ] ++ psk_suites_anon(0);
 psk_suites_anon(_) ->
 	[?TLS_DHE_PSK_WITH_AES_256_CBC_SHA,
@@ -412,11 +455,12 @@ rc4_suites({3, Minor}) ->
 rc4_suites(0) ->
     [?TLS_RSA_WITH_RC4_128_SHA,
      ?TLS_RSA_WITH_RC4_128_MD5];
-rc4_suites(N) when N =< 3 ->
+rc4_suites(N) when N =< 4 ->
     [?TLS_ECDHE_ECDSA_WITH_RC4_128_SHA,
      ?TLS_ECDHE_RSA_WITH_RC4_128_SHA,
      ?TLS_ECDH_ECDSA_WITH_RC4_128_SHA,
      ?TLS_ECDH_RSA_WITH_RC4_128_SHA].
+
 %%--------------------------------------------------------------------
 -spec des_suites(Version::ssl_record:ssl_version()) -> [ssl_cipher_format:cipher_suite()].
 %%
@@ -451,7 +495,7 @@ rsa_suites(0) ->
      ?TLS_RSA_WITH_AES_128_CBC_SHA,
      ?TLS_RSA_WITH_3DES_EDE_CBC_SHA
     ];  
-rsa_suites(N) when N =< 3 ->
+rsa_suites(N) when N =< 4 ->
     [
      ?TLS_RSA_WITH_AES_256_GCM_SHA384,
      ?TLS_RSA_WITH_AES_256_CBC_SHA256,
@@ -481,8 +525,8 @@ filter(DerCert, Ciphers0, Version) ->
     filter_suites_signature(Sign, Ciphers, Version).
 
 %%--------------------------------------------------------------------
--spec filter_suites([ssl_cipher_format:erl_cipher_suite()] | [ssl_cipher_format:cipher_suite()], map()) ->
-                           [ssl_cipher_format:erl_cipher_suite()] |  [ssl_cipher_format:cipher_suite()].
+-spec filter_suites([ssl:erl_cipher_suite()] | [ssl_cipher_format:cipher_suite()], map()) ->
+                           [ssl:erl_cipher_suite()] |  [ssl_cipher_format:cipher_suite()].
 %%
 %% Description: Filter suites using supplied filter funs
 %%-------------------------------------------------------------------	
@@ -508,8 +552,8 @@ filter_suite(Suite, Filters) ->
     filter_suite(ssl_cipher_format:suite_definition(Suite), Filters).
 
 %%--------------------------------------------------------------------
--spec filter_suites([ssl_cipher_format:erl_cipher_suite()] | [ssl_cipher_format:cipher_suite()]) -> 
-                           [ssl_cipher_format:erl_cipher_suite()] | [ssl_cipher_format:cipher_suite()].
+-spec filter_suites([ssl:erl_cipher_suite()] | [ssl_cipher_format:cipher_suite()]) -> 
+                           [ssl:erl_cipher_suite()] | [ssl_cipher_format:cipher_suite()].
 %%
 %% Description: Filter suites for algorithms supported by crypto.
 %%-------------------------------------------------------------------
@@ -550,7 +594,8 @@ crypto_support_filters() ->
           end]}.
 
 is_acceptable_keyexchange(KeyExchange, _Algos) when KeyExchange == psk;
-                                                    KeyExchange == null ->
+                                                    KeyExchange == null;
+                                                    KeyExchange == any ->
     true;
 is_acceptable_keyexchange(KeyExchange, Algos) when KeyExchange == dh_anon;
                                                    KeyExchange == dhe_psk ->
@@ -562,7 +607,7 @@ is_acceptable_keyexchange(dhe_rsa, Algos) ->
     proplists:get_bool(dh, Algos) andalso
         proplists:get_bool(rsa, Algos);
 is_acceptable_keyexchange(KeyExchange, Algos) when KeyExchange == ecdh_anon;
-                                                   KeyExchange == ecdhe_psk ->
+                                                   KeyExchange == ecdhe_psk ->        
     proplists:get_bool(ecdh, Algos);
 is_acceptable_keyexchange(KeyExchange, Algos) when KeyExchange == ecdh_ecdsa;
                                                    KeyExchange == ecdhe_ecdsa ->
@@ -593,7 +638,7 @@ is_acceptable_cipher(rc4_128, Algos) ->
 is_acceptable_cipher(des_cbc, Algos) ->
     proplists:get_bool(des_cbc, Algos);
 is_acceptable_cipher('3des_ede_cbc', Algos) ->
-    proplists:get_bool(des3_cbc, Algos);
+    proplists:get_bool(des_ede3, Algos);
 is_acceptable_cipher(aes_128_cbc, Algos) ->
     proplists:get_bool(aes_cbc128, Algos);
 is_acceptable_cipher(aes_256_cbc, Algos) ->
@@ -602,6 +647,12 @@ is_acceptable_cipher(Cipher, Algos)
   when Cipher == aes_128_gcm;
        Cipher == aes_256_gcm ->
     proplists:get_bool(aes_gcm, Algos);
+is_acceptable_cipher(Cipher, Algos)
+  when Cipher == aes_128_ccm;
+       Cipher == aes_256_ccm;
+       Cipher == aes_128_ccm_8;
+       Cipher == aes_256_ccm_8 ->
+    proplists:get_bool(aes_ccm, Algos);
 is_acceptable_cipher(Cipher, Algos) ->
     proplists:get_bool(Cipher, Algos).
 
@@ -633,17 +684,40 @@ random_bytes(N) ->
 calc_mac_hash(Type, Version,
 	      PlainFragment, #{sequence_number := SeqNo,
 			       mac_secret := MacSecret,
-			       security_parameters:=
-				   SecPars}) ->
+			       security_parameters :=
+				   #security_parameters{mac_algorithm = MacAlgorithm}}) ->
+    calc_mac_hash(Type, Version, PlainFragment, MacAlgorithm, MacSecret, SeqNo).
+%%
+calc_mac_hash(Type, Version, PlainFragment, MacAlgorithm, MacSecret, SeqNo) ->
     Length = erlang:iolist_size(PlainFragment),
-    mac_hash(Version, SecPars#security_parameters.mac_algorithm,
-	     MacSecret, SeqNo, Type,
-	     Length, PlainFragment).
+    mac_hash(Version, MacAlgorithm, MacSecret, SeqNo, Type, Length, PlainFragment).
 
 is_stream_ciphersuite(#{cipher := rc4_128}) ->
     true;
 is_stream_ciphersuite(_) ->
     false.
+
+-spec  hash_size(atom()) -> integer().
+hash_size(null) ->
+    0;
+%% The AEAD MAC hash size is not used in the context 
+%% of calculating the master secret. See RFC 5246 Section 6.2.3.3.
+hash_size(aead) ->
+    0;
+hash_size(md5) ->
+    16;
+hash_size(sha) ->
+    20;
+%% Uncomment when adding cipher suite that needs it
+%hash_size(sha224) ->
+%    28;
+hash_size(sha256) ->
+    32;
+hash_size(sha384) ->
+    48;
+hash_size(sha512) ->
+    64.
+
 %%--------------------------------------------------------------------
 %%% Internal functions
 %%--------------------------------------------------------------------
@@ -653,7 +727,7 @@ mac_hash({_,_}, ?NULL, _MacSecret, _SeqNo, _Type,
 mac_hash({3, 0}, MacAlg, MacSecret, SeqNo, Type, Length, Fragment) ->
     ssl_v3:mac_hash(MacAlg, MacSecret, SeqNo, Type, Length, Fragment);
 mac_hash({3, N} = Version, MacAlg, MacSecret, SeqNo, Type, Length, Fragment)  
-  when N =:= 1; N =:= 2; N =:= 3 ->
+  when N =:= 1; N =:= 2; N =:= 3; N =:= 4 ->
     tls_v1:mac_hash(MacAlg, MacSecret, SeqNo, Type, Version,
 		      Length, Fragment).
 
@@ -671,6 +745,12 @@ bulk_cipher_algorithm(Cipher) when Cipher == aes_128_cbc;
 bulk_cipher_algorithm(Cipher) when Cipher == aes_128_gcm;
 				   Cipher == aes_256_gcm ->
     ?AES_GCM;
+bulk_cipher_algorithm(Cipher) when Cipher == aes_128_ccm;
+				   Cipher == aes_256_ccm ->
+    ?AES_CCM;
+bulk_cipher_algorithm(Cipher) when Cipher == aes_128_ccm_8;
+				   Cipher == aes_256_ccm_8 ->
+    ?AES_CCM_8;
 bulk_cipher_algorithm(chacha20_poly1305) ->
     ?CHACHA20_POLY1305.
 
@@ -685,6 +765,10 @@ type(Cipher) when Cipher == des_cbc;
     ?BLOCK;
 type(Cipher) when Cipher == aes_128_gcm;
 		  Cipher == aes_256_gcm;
+                  Cipher == aes_128_ccm;
+		  Cipher == aes_256_ccm;
+                  Cipher == aes_128_ccm_8;
+		  Cipher == aes_256_ccm_8;
 		  Cipher == chacha20_poly1305 ->
     ?AEAD.
 
@@ -702,8 +786,16 @@ key_material(aes_256_cbc) ->
     32;
 key_material(aes_128_gcm) ->
     16;
+key_material(aes_128_ccm) ->
+    16;
+key_material(aes_128_ccm_8) ->
+    16;
 key_material(aes_256_gcm) ->
     32;
+key_material(aes_256_ccm_8) ->
+    32;
+key_material(aes_256_ccm) ->
+    32;
 key_material(chacha20_poly1305) ->
     32.
 
@@ -719,22 +811,29 @@ expanded_key_material(Cipher) when Cipher == aes_128_cbc;
 				   Cipher == aes_256_cbc;
 				   Cipher == aes_128_gcm;
 				   Cipher == aes_256_gcm;
+                                   Cipher == aes_128_ccm;
+				   Cipher == aes_256_ccm;
+                                   Cipher == aes_128_ccm_8;
+				   Cipher == aes_256_ccm_8;
 				   Cipher == chacha20_poly1305 ->
     unknown.  
 
-
 effective_key_bits(null) ->
     0;
 effective_key_bits(des_cbc) ->
     56;
 effective_key_bits(Cipher) when Cipher == rc4_128;
 				Cipher == aes_128_cbc;
-				Cipher == aes_128_gcm ->
+				Cipher == aes_128_gcm;
+                                Cipher == aes_128_ccm;
+                                Cipher == aes_128_ccm_8 ->
     128;
 effective_key_bits('3des_ede_cbc') ->
     168;
 effective_key_bits(Cipher) when Cipher == aes_256_cbc;
 				Cipher == aes_256_gcm;
+				Cipher == aes_256_ccm;
+                                Cipher == aes_256_ccm_8;
 				Cipher == chacha20_poly1305 ->
     256.
 
@@ -742,22 +841,27 @@ iv_size(Cipher) when Cipher == null;
 		     Cipher == rc4_128;
 		     Cipher == chacha20_poly1305->
     0;
-
 iv_size(Cipher) when Cipher == aes_128_gcm;
-		     Cipher == aes_256_gcm ->
+		     Cipher == aes_256_gcm;
+                     Cipher == aes_128_ccm;
+		     Cipher == aes_256_ccm;
+                     Cipher == aes_128_ccm_8;
+		     Cipher == aes_256_ccm_8 ->
     4;
-
 iv_size(Cipher) ->
     block_size(Cipher).
 
 block_size(Cipher) when Cipher == des_cbc;
 			Cipher == '3des_ede_cbc' -> 
     8;
-
 block_size(Cipher) when Cipher == aes_128_cbc;
 			Cipher == aes_256_cbc;
 			Cipher == aes_128_gcm;
 			Cipher == aes_256_gcm;
+                        Cipher == aes_128_ccm;
+			Cipher == aes_256_ccm;
+                        Cipher == aes_128_ccm_8;
+			Cipher == aes_256_ccm_8;
 			Cipher == chacha20_poly1305 ->
     16.
 
@@ -801,26 +905,70 @@ sign_algorithm(?ECDSA) -> ecdsa;
 sign_algorithm(Other) when is_integer(Other) andalso ((Other >= 4) and (Other =< 223)) -> unassigned;
 sign_algorithm(Other) when is_integer(Other) andalso ((Other >= 224) and (Other =< 255)) -> Other.
 
-hash_size(null) ->
-    0;
-%% The AEAD MAC hash size is not used in the context 
-%% of calculating the master secret. See RFC 5246 Section 6.2.3.3.
-hash_size(aead) ->
-    0;
-hash_size(md5) ->
-    16;
-hash_size(sha) ->
-    20;
-%% Uncomment when adding cipher suite that needs it
-%hash_size(sha224) ->
-%    28;
-hash_size(sha256) ->
-    32;
-hash_size(sha384) ->
-    48.
-%% Uncomment when adding cipher suite that needs it
-%hash_size(sha512) ->
-%    64.
+
+signature_scheme(rsa_pkcs1_sha256) -> ?RSA_PKCS1_SHA256;
+signature_scheme(rsa_pkcs1_sha384) -> ?RSA_PKCS1_SHA384;
+signature_scheme(rsa_pkcs1_sha512) -> ?RSA_PKCS1_SHA512;
+signature_scheme(ecdsa_secp256r1_sha256) -> ?ECDSA_SECP256R1_SHA256;
+signature_scheme(ecdsa_secp384r1_sha384) -> ?ECDSA_SECP384R1_SHA384;
+signature_scheme(ecdsa_secp521r1_sha512) -> ?ECDSA_SECP521R1_SHA512;
+signature_scheme(rsa_pss_rsae_sha256) -> ?RSA_PSS_RSAE_SHA256;
+signature_scheme(rsa_pss_rsae_sha384) -> ?RSA_PSS_RSAE_SHA384;
+signature_scheme(rsa_pss_rsae_sha512) -> ?RSA_PSS_RSAE_SHA512;
+signature_scheme(ed25519) -> ?ED25519;
+signature_scheme(ed448) -> ?ED448;
+signature_scheme(rsa_pss_pss_sha256) -> ?RSA_PSS_PSS_SHA256;
+signature_scheme(rsa_pss_pss_sha384) -> ?RSA_PSS_PSS_SHA384;
+signature_scheme(rsa_pss_pss_sha512) -> ?RSA_PSS_PSS_SHA512;
+signature_scheme(rsa_pkcs1_sha1) -> ?RSA_PKCS1_SHA1;
+signature_scheme(ecdsa_sha1) -> ?ECDSA_SHA1;
+signature_scheme(?RSA_PKCS1_SHA256) -> rsa_pkcs1_sha256;
+signature_scheme(?RSA_PKCS1_SHA384) -> rsa_pkcs1_sha384;
+signature_scheme(?RSA_PKCS1_SHA512) -> rsa_pkcs1_sha512;
+signature_scheme(?ECDSA_SECP256R1_SHA256) -> ecdsa_secp256r1_sha256;
+signature_scheme(?ECDSA_SECP384R1_SHA384) -> ecdsa_secp384r1_sha384;
+signature_scheme(?ECDSA_SECP521R1_SHA512) -> ecdsa_secp521r1_sha512;
+signature_scheme(?RSA_PSS_RSAE_SHA256) -> rsa_pss_rsae_sha256;
+signature_scheme(?RSA_PSS_RSAE_SHA384) -> rsa_pss_rsae_sha384;
+signature_scheme(?RSA_PSS_RSAE_SHA512) -> rsa_pss_rsae_sha512;
+signature_scheme(?ED25519) -> ed25519;
+signature_scheme(?ED448) -> ed448;
+signature_scheme(?RSA_PSS_PSS_SHA256) -> rsa_pss_pss_sha256;
+signature_scheme(?RSA_PSS_PSS_SHA384) -> rsa_pss_pss_sha384;
+signature_scheme(?RSA_PSS_PSS_SHA512) -> rsa_pss_pss_sha512;
+signature_scheme(?RSA_PKCS1_SHA1) -> rsa_pkcs1_sha1;
+signature_scheme(?ECDSA_SHA1) -> ecdsa_sha1;
+signature_scheme(_) -> unassigned.
+%% TODO: reserved code points?
+
+scheme_to_components(rsa_pkcs1_sha256) -> {sha256, rsa_pkcs1, undefined};
+scheme_to_components(rsa_pkcs1_sha384) -> {sha384, rsa_pkcs1, undefined};
+scheme_to_components(rsa_pkcs1_sha512) -> {sha512, rsa_pkcs1, undefined};
+scheme_to_components(ecdsa_secp256r1_sha256) -> {sha256, ecdsa, secp256r1};
+scheme_to_components(ecdsa_secp384r1_sha384) -> {sha384, ecdsa, secp384r1};
+scheme_to_components(ecdsa_secp521r1_sha512) -> {sha512, ecdsa, secp521r1};
+scheme_to_components(rsa_pss_rsae_sha256) -> {sha256, rsa_pss_rsae, undefined};
+scheme_to_components(rsa_pss_rsae_sha384) -> {sha384, rsa_pss_rsae, undefined};
+scheme_to_components(rsa_pss_rsae_sha512) -> {sha512, rsa_pss_rsae, undefined};
+scheme_to_components(ed25519) -> {undefined, undefined, undefined};
+scheme_to_components(ed448) -> {undefined, undefined, undefined};
+scheme_to_components(rsa_pss_pss_sha256) -> {sha256, rsa_pss_pss, undefined};
+scheme_to_components(rsa_pss_pss_sha384) -> {sha384, rsa_pss_pss, undefined};
+scheme_to_components(rsa_pss_pss_sha512) -> {sha512, rsa_pss_pss, undefined};
+scheme_to_components(rsa_pkcs1_sha1) -> {sha1, rsa_pkcs1, undefined};
+scheme_to_components(ecdsa_sha1) -> {sha1, ecdsa, undefined}.
+
+
+%% TODO: Add support for EC and RSA-SSA signatures
+signature_algorithm_to_scheme(#'SignatureAlgorithm'{algorithm = ?sha1WithRSAEncryption}) ->
+    rsa_pkcs1_sha1;
+signature_algorithm_to_scheme(#'SignatureAlgorithm'{algorithm = ?sha256WithRSAEncryption}) ->
+    rsa_pkcs1_sha256;
+signature_algorithm_to_scheme(#'SignatureAlgorithm'{algorithm = ?sha384WithRSAEncryption}) ->
+    rsa_pkcs1_sha384;
+signature_algorithm_to_scheme(#'SignatureAlgorithm'{algorithm = ?sha512WithRSAEncryption}) ->
+    rsa_pkcs1_sha512.
+
 
 %% RFC 5246: 6.2.3.2.  CBC Block Cipher
 %%
@@ -858,7 +1006,7 @@ generic_block_cipher_from_bin({3, N}, T, IV, HashSize)
 			  next_iv = IV};
 
 generic_block_cipher_from_bin({3, N}, T, IV, HashSize)
-  when N == 2; N == 3 ->
+  when N == 2; N == 3; N == 4 ->
     Sz1 = byte_size(T) - 1,
     <<_:Sz1/binary, ?BYTE(PadLength)>> = T,
     IVLength = byte_size(IV),
@@ -888,21 +1036,51 @@ is_correct_padding(GenBlockCipher, {3, 1}, false) ->
 %% Padding must be checked in TLS 1.1 and after  
 is_correct_padding(#generic_block_cipher{padding_length = Len,
 					 padding = Padding}, _, _) ->
-    Len == byte_size(Padding) andalso
-		list_to_binary(lists:duplicate(Len, Len)) == Padding.
-
-get_padding(Length, BlockSize) ->
-    get_padding_aux(BlockSize, Length rem BlockSize).
-
-get_padding_aux(_, 0) ->
-    {0, <<>>};
-get_padding_aux(BlockSize, PadLength) ->
-    N = BlockSize - PadLength,
-    {N, list_to_binary(lists:duplicate(N, N))}.
+    (Len == byte_size(Padding)) andalso (padding(Len) == Padding).
+
+padding(PadLen) ->
+    case PadLen of
+        0 -> <<>>;
+        1 -> <<1>>;
+        2 -> <<2,2>>;
+        3 -> <<3,3,3>>;
+        4 -> <<4,4,4,4>>;
+        5 -> <<5,5,5,5,5>>;
+        6 -> <<6,6,6,6,6,6>>;
+        7 -> <<7,7,7,7,7,7,7>>;
+        8 -> <<8,8,8,8,8,8,8,8>>;
+        9 -> <<9,9,9,9,9,9,9,9,9>>;
+        10 -> <<10,10,10,10,10,10,10,10,10,10>>;
+        11 -> <<11,11,11,11,11,11,11,11,11,11,11>>;
+        12 -> <<12,12,12,12,12,12,12,12,12,12,12,12>>;
+        13 -> <<13,13,13,13,13,13,13,13,13,13,13,13,13>>;
+        14 -> <<14,14,14,14,14,14,14,14,14,14,14,14,14,14>>;
+        15 -> <<15,15,15,15,15,15,15,15,15,15,15,15,15,15,15>>;
+        _ ->
+            binary:copy(<<PadLen>>, PadLen)
+    end.
 
-random_iv(IV) ->
-    IVSz = byte_size(IV),
-    random_bytes(IVSz).
+padding_with_len(TextLen, BlockSize) ->
+    case BlockSize - (TextLen rem BlockSize) of
+        0 -> <<0>>;
+        1 -> <<1,1>>;
+        2 -> <<2,2,2>>;
+        3 -> <<3,3,3,3>>;
+        4 -> <<4,4,4,4,4>>;
+        5 -> <<5,5,5,5,5,5>>;
+        6 -> <<6,6,6,6,6,6,6>>;
+        7 -> <<7,7,7,7,7,7,7,7>>;
+        8 -> <<8,8,8,8,8,8,8,8,8>>;
+        9 -> <<9,9,9,9,9,9,9,9,9,9>>;
+        10 -> <<10,10,10,10,10,10,10,10,10,10,10>>;
+        11 -> <<11,11,11,11,11,11,11,11,11,11,11,11>>;
+        12 -> <<12,12,12,12,12,12,12,12,12,12,12,12,12>>;
+        13 -> <<13,13,13,13,13,13,13,13,13,13,13,13,13,13>>;
+        14 -> <<14,14,14,14,14,14,14,14,14,14,14,14,14,14,14>>;
+        15 -> <<15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15>>;
+        PadLen ->
+            binary:copy(<<PadLen>>, PadLen + 1)
+    end.
 
 next_iv(Bin, IV) ->
     BinSz = byte_size(Bin),
@@ -1126,3 +1304,55 @@ filter_keyuse_suites(Use, KeyUse, CipherSuits, Suites) ->
 	false ->
 	    CipherSuits -- Suites
     end.
+
+generate_server_share(Group) ->
+    Key = generate_key_exchange(Group),
+    #key_share_server_hello{
+       server_share = #key_share_entry{
+                         group = Group,
+                         key_exchange = Key
+                        }}.
+
+generate_client_shares([]) ->
+    #key_share_client_hello{client_shares = []};
+generate_client_shares(Groups) ->
+    generate_client_shares(Groups, []).
+%%
+generate_client_shares([], Acc) ->
+    #key_share_client_hello{client_shares = lists:reverse(Acc)};
+generate_client_shares([Group|Groups], Acc) ->
+    Key = generate_key_exchange(Group),
+    KeyShareEntry = #key_share_entry{
+                       group = Group,
+                       key_exchange = Key
+                      },
+    generate_client_shares(Groups, [KeyShareEntry|Acc]).
+
+
+generate_key_exchange(secp256r1) ->
+    public_key:generate_key({namedCurve, secp256r1});
+generate_key_exchange(secp384r1) ->
+    public_key:generate_key({namedCurve, secp384r1});
+generate_key_exchange(secp521r1) ->
+    public_key:generate_key({namedCurve, secp521r1});
+generate_key_exchange(x25519) ->
+    crypto:generate_key(ecdh, x25519);
+generate_key_exchange(x448) ->
+    crypto:generate_key(ecdh, x448);
+generate_key_exchange(FFDHE) ->
+    public_key:generate_key(ssl_dh_groups:dh_params(FFDHE)).
+
+
+%% TODO: Move this functionality to crypto!
+%% 7.4.1.  Finite Field Diffie-Hellman
+%%
+%%    For finite field groups, a conventional Diffie-Hellman [DH76]
+%%    computation is performed.  The negotiated key (Z) is converted to a
+%%    byte string by encoding in big-endian form and left-padded with zeros
+%%    up to the size of the prime.  This byte string is used as the shared
+%%    secret in the key schedule as specified above.
+add_zero_padding(Bin, PrimeSize)
+  when byte_size (Bin) =:= PrimeSize ->
+    Bin;
+add_zero_padding(Bin, PrimeSize) ->
+    add_zero_padding(<<0, Bin/binary>>, PrimeSize).
diff --git a/lib/ssl/src/ssl_cipher.hrl b/lib/ssl/src/ssl_cipher.hrl
index 2371e8bd32..9c5e2f80a9 100644
--- a/lib/ssl/src/ssl_cipher.hrl
+++ b/lib/ssl/src/ssl_cipher.hrl
@@ -47,6 +47,7 @@
 -record(cipher_state, {
 	  iv,
 	  key,
+	  finished_key,
 	  state,
 	  nonce,
           tag_len       
@@ -600,15 +601,98 @@
 %%      TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384     = {0xC0,0x32};
 -define(TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384, <<?BYTE(16#C0), ?BYTE(16#32)>>).
 
-%%% Chacha20/Poly1305 Suites draft-agl-tls-chacha20poly1305-04
 
-%%      TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256   = {0xcc, 0x13}
--define(TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256, <<?BYTE(16#CC), ?BYTE(16#13)>>).
+%%% ChaCha20-Poly1305 Cipher Suites for Transport Layer Security (TLS) RFC7905
 
-%%      TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 = {0xcc, 0x14}
--define(TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256, <<?BYTE(16#CC), ?BYTE(16#14)>>).
+%%      TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256   = {0xCC, 0xA8}
+-define(TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256, <<?BYTE(16#CC), ?BYTE(16#A8)>>).
 
-%%      TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256     = {0xcc, 0x15}
--define(TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256, <<?BYTE(16#CC), ?BYTE(16#15)>>).
+%%      TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 = {0xCC, 0xA9}
+-define(TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256, <<?BYTE(16#CC), ?BYTE(16#A9)>>).
+
+%%      TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256     = {0xCC, 0xAA}
+-define(TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256, <<?BYTE(16#CC), ?BYTE(16#AA)>>).
+
+%%      TLS_PSK_WITH_CHACHA20_POLY1305_SHA256         = {0xCC, 0xAB}
+-define(TLS_PSK_WITH_CHACHA20_POLY1305_SHA256, <<?BYTE(16#CC), ?BYTE(16#AB)>>).
+
+%%      TLS_ECDHE_PSK_WITH_CHACHA20_POLY1305_SHA256   = {0xCC, 0xAC}
+-define(TLS_ECDHE_PSK_WITH_CHACHA20_POLY1305_SHA256, <<?BYTE(16#CC), ?BYTE(16#AC)>>).
+
+%%      TLS_DHE_PSK_WITH_CHACHA20_POLY1305_SHA256     = {0xCC, 0xAD}
+-define(TLS_DHE_PSK_WITH_CHACHA20_POLY1305_SHA256, <<?BYTE(16#CC), ?BYTE(16#AD)>>).
+
+%%      TLS_RSA_PSK_WITH_CHACHA20_POLY1305_SHA256     = {0xCC, 0xAE}
+-define(TLS_RSA_PSK_WITH_CHACHA20_POLY1305_SHA256, <<?BYTE(16#CC), ?BYTE(16#AE)>>).
+
+
+
+%% RFC 6655 - TLS-1.2 cipher suites
+
+%% TLS_RSA_WITH_AES_128_CCM      = {0xC0,0x9C}
+-define(TLS_RSA_WITH_AES_128_CCM,   <<?BYTE(16#C0), ?BYTE(16#9C)>>).
+
+%% TLS_RSA_WITH_AES_256_CCM      = {0xC0,0x9D}
+-define(TLS_RSA_WITH_AES_256_CCM, <<?BYTE(16#C0), ?BYTE(16#9D)>>).
+
+%% TLS_DHE_RSA_WITH_AES_256_CCM      = {0xC0,0x9E}
+-define(TLS_DHE_RSA_WITH_AES_256_CCM, <<?BYTE(16#C0), ?BYTE(16#9E)>>).
+
+%% TLS_DHE_RSA_WITH_AES_128_CCM      = {0xC0,0x9F}
+-define(TLS_DHE_RSA_WITH_AES_128_CCM, <<?BYTE(16#C0), ?BYTE(16#9F)>>).
+
+%% TLS_RSA_WITH_AES_256_CCM_8      = {0xC0,0x9A0}
+-define(TLS_RSA_WITH_AES_256_CCM_8, <<?BYTE(16#C0), ?BYTE(16#A0)>>).
+
+%% TLS_RSA_WITH_AES_128_CCM_8      = {0xC0,0xA1}
+-define(TLS_RSA_WITH_AES_128_CCM_8, <<?BYTE(16#C0), ?BYTE(16#A1)>>).
+
+%% TLS_DHE_RSA_WITH_AES_128_CCM_8      = {0xC0,0xA2}
+-define(TLS_DHE_RSA_WITH_AES_128_CCM_8, <<?BYTE(16#C0), ?BYTE(16#A2)>>).
+
+%% TLS_DHE_RSA_WITH_AES_256_CCM_8      = {0xC0,0xA3}
+-define(TLS_DHE_RSA_WITH_AES_256_CCM_8, <<?BYTE(16#C0), ?BYTE(16#A3)>>).
+
+%%  TLS_PSK_WITH_AES_128_CCM       = {0xC0,0xA4}
+-define(TLS_PSK_WITH_AES_128_CCM, <<?BYTE(16#C0), ?BYTE(16#A4)>>).
+
+%% TLS_PSK_WITH_AES_256_CCM       = {0xC0,0xA5)
+-define(TLS_PSK_WITH_AES_256_CCM, <<?BYTE(16#C0), ?BYTE(16#A5)>>).
+
+%% TLS_DHE_PSK_WITH_AES_128_CCM   = {0xC0,0xA6}
+-define(TLS_DHE_PSK_WITH_AES_128_CCM, <<?BYTE(16#C0), ?BYTE(16#A6)>>).
+
+%% TLS_DHE_PSK_WITH_AES_256_CCM   = {0xC0,0xA7}
+-define(TLS_DHE_PSK_WITH_AES_256_CCM, <<?BYTE(16#C0), ?BYTE(16#A7)>>).
+
+%% TLS_PSK_WITH_AES_128_CCM_8     = {0xC0,0xA8}
+-define(TLS_PSK_WITH_AES_128_CCM_8, <<?BYTE(16#C0), ?BYTE(16#A8)>>).
+
+%%  TLS_PSK_WITH_AES_256_CCM_8     = {0xC0,0xA9)
+-define(TLS_PSK_WITH_AES_256_CCM_8, <<?BYTE(16#C0), ?BYTE(16#A9)>>).
+
+%% TLS_PSK_DHE_WITH_AES_128_CCM_8 = {0xC0,0xAA}
+-define(TLS_PSK_DHE_WITH_AES_128_CCM_8, <<?BYTE(16#C0), ?BYTE(16#AA)>>).
+
+%% TLS_PSK_DHE_WITH_AES_256_CCM_8 = << ?BYTE(0xC0,0xAB}
+-define(TLS_PSK_DHE_WITH_AES_256_CCM_8, <<?BYTE(16#C0),?BYTE(16#AB)>>).
+
+
+%%% TLS 1.3 cipher suites RFC8446
+
+%% TLS_AES_128_GCM_SHA256       = {0x13,0x01}
+-define(TLS_AES_128_GCM_SHA256, <<?BYTE(16#13), ?BYTE(16#01)>>).
+
+%% TLS_AES_256_GCM_SHA384       = {0x13,0x02}
+-define(TLS_AES_256_GCM_SHA384, <<?BYTE(16#13),?BYTE(16#02)>>).
+
+%% TLS_CHACHA20_POLY1305_SHA256 = {0x13,0x03}
+-define(TLS_CHACHA20_POLY1305_SHA256, <<?BYTE(16#13),?BYTE(16#03)>>).
+
+%% %% TLS_AES_128_CCM_SHA256       = {0x13,0x04}
+%% -define(TLS_AES_128_CCM_SHA256, <<?BYTE(16#13), ?BYTE(16#04)>>).
+
+%% %%  TLS_AES_128_CCM_8_SHA256    = {0x13,0x05}
+%% -define(TLS_AES_128_CCM_8_SHA256, <<?BYTE(16#13),?BYTE(16#05)>>).
 
 -endif. % -ifdef(ssl_cipher).
diff --git a/lib/ssl/src/ssl_cipher_format.erl b/lib/ssl/src/ssl_cipher_format.erl
index c311c0d097..8737181922 100644
--- a/lib/ssl/src/ssl_cipher_format.erl
+++ b/lib/ssl/src/ssl_cipher_format.erl
@@ -25,26 +25,25 @@
 %%----------------------------------------------------------------------
 -module(ssl_cipher_format).
 
+-include("ssl_api.hrl").
 -include("ssl_cipher.hrl").
 -include("ssl_internal.hrl").
 -include_lib("public_key/include/public_key.hrl").
 
--export_type([cipher_suite/0,
-	      erl_cipher_suite/0, old_erl_cipher_suite/0, openssl_cipher_suite/0,
-	      hash/0, key_algo/0, sign_algo/0]).
+-export_type([old_erl_cipher_suite/0, openssl_cipher_suite/0, cipher_suite/0]).
 
--type cipher()            :: null |rc4_128 | des_cbc | '3des_ede_cbc' | aes_128_cbc |  aes_256_cbc | aes_128_gcm | aes_256_gcm | chacha20_poly1305.
--type hash()              :: null | md5 | sha | sha224 | sha256 | sha384 | sha512.
--type sign_algo()         :: rsa | dsa | ecdsa.
--type key_algo()          :: null | rsa | dhe_rsa | dhe_dss | ecdhe_ecdsa| ecdh_ecdsa | ecdh_rsa| srp_rsa| srp_dss | psk | dhe_psk | rsa_psk | dh_anon | ecdh_anon | srp_anon.
--type erl_cipher_suite()  :: #{key_exchange := key_algo(),
-                               cipher := cipher(),
-                               mac    := hash() | aead,
-                               prf    := hash() | default_prf %% Old cipher suites, version dependent
+-type internal_cipher()            :: null | ssl:cipher().
+-type internal_hash()              :: null | ssl:hash().
+-type internal_kex_algo()          :: null | ssl:kex_algo().
+-type internal_erl_cipher_suite()  :: #{key_exchange := internal_kex_algo(),
+                               cipher := internal_cipher(),
+                               mac    := internal_hash() | aead,
+                               prf    := internal_hash() | default_prf %% Old cipher suites, version dependent
                               }.  
--type old_erl_cipher_suite() :: {key_algo(), cipher(), hash()} % Pre TLS 1.2 
+-type old_erl_cipher_suite() :: {ssl:kex_algo(), internal_cipher(), internal_hash()} % Pre TLS 1.2 
                                 %% TLS 1.2, internally PRE TLS 1.2 will use default_prf
-                              | {key_algo(), cipher(), hash(), hash() | default_prf}. 
+                              | {ssl:kex_algo(), internal_cipher(), internal_hash(), 
+                                 internal_hash() | default_prf}. 
 -type cipher_suite()      :: binary().
 -type openssl_cipher_suite()  :: string().
 
@@ -53,7 +52,7 @@
          openssl_suite/1, openssl_suite_name/1]).
 
 %%--------------------------------------------------------------------
--spec suite_to_str(erl_cipher_suite()) -> string().
+-spec suite_to_str(internal_erl_cipher_suite()) -> string().
 %%
 %% Description: Return the string representation of a cipher suite.
 %%--------------------------------------------------------------------
@@ -62,6 +61,12 @@ suite_to_str(#{key_exchange := null,
                mac := null,
                prf := null}) ->
     "TLS_EMPTY_RENEGOTIATION_INFO_SCSV";
+suite_to_str(#{key_exchange := any,
+               cipher := Cipher,
+               mac := aead,
+               prf := PRF}) ->
+    "TLS_" ++ string:to_upper(atom_to_list(Cipher)) ++
+        "_" ++ string:to_upper(atom_to_list(PRF));
 suite_to_str(#{key_exchange := Kex,
                cipher := Cipher,
                mac := aead,
@@ -77,7 +82,7 @@ suite_to_str(#{key_exchange := Kex,
         "_" ++ string:to_upper(atom_to_list(Mac)).
 
 %%--------------------------------------------------------------------
--spec suite_definition(cipher_suite()) -> erl_cipher_suite().
+-spec suite_definition(cipher_suite()) -> internal_erl_cipher_suite().
 %%
 %% Description: Return erlang cipher suite definition.
 %% Note: Currently not supported suites are commented away.
@@ -462,16 +467,16 @@ suite_definition(?TLS_ECDHE_PSK_WITH_AES_256_GCM_SHA384) ->
       cipher => aes_256_gcm, 
       mac => null, 
       prf => sha384};
-%% suite_definition(?TLS_ECDHE_PSK_WITH_AES_128_CCM_8_SHA256) ->
-%%     #{key_exchange => ecdhe_psk, 
-%%       cipher => aes_128_ccm, 
-%%       mac => null, 
-%%       prf =>sha256};
-%% suite_definition(?TLS_ECDHE_PSK_WITH_AES_128_CCM_SHA256) ->
-%%     #{key_exchange => ecdhe_psk, 
-%%       cipher => aes_256_ccm, 
-%%       mac => null, 
-%%       prf => sha256};
+suite_definition(?TLS_ECDHE_PSK_WITH_AES_128_CCM_SHA256) ->
+     #{key_exchange => ecdhe_psk, 
+      cipher => aes_128_ccm, 
+       mac => null, 
+       prf =>sha256};
+suite_definition(?TLS_ECDHE_PSK_WITH_AES_128_CCM_8_SHA256) ->
+    #{key_exchange => ecdhe_psk, 
+      cipher => aes_128_ccm_8, 
+      mac => null, 
+      prf =>sha256};
 %%% SRP Cipher Suites RFC 5054
 suite_definition(?TLS_SRP_SHA_WITH_3DES_EDE_CBC_SHA) ->
     #{key_exchange => srp_anon, 
@@ -787,7 +792,53 @@ suite_definition(?TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384) ->
       cipher => aes_256_gcm, 
       mac => aead, 
       prf => sha384};
-%% draft-agl-tls-chacha20poly1305-04 Chacha20/Poly1305 Suites
+suite_definition(?TLS_PSK_WITH_AES_128_CCM) ->
+    #{key_exchange => psk,
+      cipher => aes_128_ccm,
+      mac => aead,
+      prf => sha256};
+suite_definition(?TLS_PSK_WITH_AES_256_CCM) -> 
+    #{key_exchange => psk,
+      cipher => aes_256_ccm,
+      mac => aead,
+      prf => sha256};
+suite_definition(?TLS_DHE_PSK_WITH_AES_128_CCM) ->
+    #{key_exchange => dhe_psk,
+      cipher => aes_128_ccm,
+      mac => aead,
+      prf => sha256};
+suite_definition(?TLS_DHE_PSK_WITH_AES_256_CCM) ->
+    #{key_exchange => dhe_psk,
+      cipher => aes_256_ccm,
+      mac => aead,
+      prf => sha256};
+suite_definition(?TLS_PSK_WITH_AES_128_CCM_8) ->
+    #{key_exchange => psk,
+      cipher => aes_128_ccm_8,
+      mac => aead,
+      prf => sha256};
+suite_definition(?TLS_PSK_WITH_AES_256_CCM_8) ->
+    #{key_exchange => psk,
+      cipher => aes_256_ccm_8,
+      mac => aead,
+      prf => sha256};
+suite_definition(?TLS_PSK_DHE_WITH_AES_128_CCM_8) ->
+  #{key_exchange => dhe_psk,
+    cipher => aes_128_ccm_8,
+    mac => aead,
+    prf => sha256};
+suite_definition(?TLS_PSK_DHE_WITH_AES_256_CCM_8) ->
+  #{key_exchange => dhe_psk,
+    cipher => aes_256_ccm_8,
+    mac => aead,
+    prf => sha256};
+suite_definition(#{key_exchange := psk_dhe,
+                   cipher := aes_256_ccm_8,
+                   mac := aead,
+                   prf := sha256}) ->
+    ?TLS_PSK_DHE_WITH_AES_256_CCM_8;
+
+% draft-agl-tls-chacha20poly1305-04 Chacha20/Poly1305 Suites
 suite_definition(?TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256) ->
     #{key_exchange => ecdhe_rsa, 
       cipher => chacha20_poly1305, 
@@ -802,10 +853,36 @@ suite_definition(?TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256) ->
     #{key_exchange => dhe_rsa, 
       cipher => chacha20_poly1305, 
       mac => aead, 
+      prf => sha256};
+%% TLS 1.3 Cipher Suites RFC8446
+suite_definition(?TLS_AES_128_GCM_SHA256) ->
+    #{key_exchange => any,
+      cipher => aes_128_gcm,
+      mac => aead,
+      prf => sha256};
+suite_definition(?TLS_AES_256_GCM_SHA384) ->
+    #{key_exchange => any,
+      cipher => aes_256_gcm,
+      mac => aead,
+      prf => sha384};
+suite_definition(?TLS_CHACHA20_POLY1305_SHA256) ->
+    #{key_exchange => any,
+      cipher => chacha20_poly1305,
+      mac => aead,
       prf => sha256}.
+%% suite_definition(?TLS_AES_128_CCM_SHA256) ->
+%%      #{key_exchange => any,
+%%        cipher => aes_128_ccm,
+%%        mac => aead,
+%%        prf => sha256};
+%% suite_definition(?TLS_AES_128_CCM_8_SHA256) ->
+%%      #{key_exchange => any,
+%%       cipher => aes_128_ccm_8,
+%%        mac => aead,
+%%        prf => sha256}.
 
 %%--------------------------------------------------------------------
--spec erl_suite_definition(cipher_suite() | erl_cipher_suite()) -> old_erl_cipher_suite().
+-spec erl_suite_definition(cipher_suite() | internal_erl_cipher_suite()) -> old_erl_cipher_suite().
 %%
 %% Description: Return erlang cipher suite definition. Filters last value
 %% for now (compatibility reasons).
@@ -822,7 +899,7 @@ erl_suite_definition(#{key_exchange := KeyExchange, cipher := Cipher,
     end.
 
 %%--------------------------------------------------------------------
--spec suite(erl_cipher_suite()) -> cipher_suite().
+-spec suite(internal_erl_cipher_suite()) -> cipher_suite().
 %%
 %% Description: Return TLS cipher suite definition.
 %%--------------------------------------------------------------------
@@ -1122,16 +1199,16 @@ suite(#{key_exchange := ecdhe_psk,
        mac := null, 
        prf := sha384}) ->
     ?TLS_ECDHE_PSK_WITH_AES_256_GCM_SHA384;
- %% suite(#{key_exchange := ecdhe_psk, 
- %%        cipher := aes_128_ccm, 
- %%        mac := null, 
- %%        prf := sha256}) ->
- %%    ?TLS_ECDHE_PSK_WITH_AES_128_CCM_8_SHA256;
- %% suite(#{key_exchange := ecdhe_psk, 
- %%         cipher := aes_256_ccm, 
- %%         mac := null, 
- %%         prf := sha256}) ->
- %%    ?TLS_ECDHE_PSK_WITH_AES_128_CCM_SHA256;
+suite(#{key_exchange := ecdhe_psk, 
+        cipher := aes_128_ccm_8, 
+        mac := null, 
+        prf := sha256}) ->
+    ?TLS_ECDHE_PSK_WITH_AES_128_CCM_8_SHA256;
+suite(#{key_exchange := ecdhe_psk, 
+        cipher := aes_128_ccm, 
+         mac := null, 
+         prf := sha256}) ->
+    ?TLS_ECDHE_PSK_WITH_AES_128_CCM_SHA256;
 %%% SRP Cipher Suites RFC 5054
 suite(#{key_exchange := srp_anon, 
         cipher := '3des_ede_cbc',
@@ -1427,8 +1504,117 @@ suite(#{key_exchange := dhe_rsa,
         cipher := chacha20_poly1305,  
         mac := aead, 
         prf := sha256}) ->
-    ?TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256.
+    ?TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256;
 
+%% RFC 6655 - TLS-1.2 cipher suites
+suite(#{key_exchange := psk,
+        cipher := aes_128_ccm,
+        mac := aead,
+        prf := sha256}) ->
+    ?TLS_PSK_WITH_AES_128_CCM;
+suite(#{key_exchange := psk,
+        cipher := aes_256_ccm,
+        mac := aead,
+        prf := sha256}) ->
+    ?TLS_PSK_WITH_AES_256_CCM;
+suite(#{key_exchange := dhe_psk,
+        cipher := aes_128_ccm,
+        mac := aead,
+        prf := sha256}) ->
+    ?TLS_DHE_PSK_WITH_AES_128_CCM;
+suite(#{key_exchange := dhe_psk,
+        cipher := aes_256_ccm,
+        mac := aead,
+        prf := sha256}) ->
+    ?TLS_DHE_PSK_WITH_AES_256_CCM;
+suite(#{key_exchange := rsa,
+        cipher := aes_128_ccm,
+        mac := aead,
+        prf := sha256}) ->
+    ?TLS_RSA_WITH_AES_128_CCM;
+suite(#{key_exchange := rsa,
+        cipher := aes_256_ccm,
+        mac := aead,
+        prf := sha256}) ->
+    ?TLS_RSA_WITH_AES_256_CCM;
+suite(#{key_exchange := dhe_rsa,
+        cipher := aes_128_ccm,
+        mac := aead,
+        prf := sha256}) ->
+    ?TLS_DHE_RSA_WITH_AES_128_CCM;
+suite(#{key_exchange := dhe_rsa,
+        cipher := aes_256_ccm,
+        mac := aead,
+        prf := sha256}) ->
+    ?TLS_DHE_RSA_WITH_AES_256_CCM;
+
+suite(#{key_exchange := psk,
+        cipher := aes_128_ccm_8,
+        mac := aead,
+        prf := sha256}) ->
+    ?TLS_PSK_WITH_AES_128_CCM_8;
+suite(#{key_exchange := psk,
+        cipher := aes_256_ccm_8,
+        mac := aead,
+        prf := sha256}) ->
+    ?TLS_PSK_WITH_AES_256_CCM_8;
+suite(#{key_exchange := dhe_psk,
+        cipher := aes_128_ccm_8,
+        mac := aead,
+        prf := sha256}) ->
+    ?TLS_PSK_DHE_WITH_AES_128_CCM_8;
+suite(#{key_exchange := dhe_psk,
+        cipher := aes_256_ccm_8,
+        mac := aead,
+        prf := sha256}) ->
+    ?TLS_PSK_DHE_WITH_AES_256_CCM_8;
+suite(#{key_exchange := rsa,
+        cipher := aes_128_ccm_8,
+        mac := aead,
+        prf := sha256}) ->
+    ?TLS_RSA_WITH_AES_128_CCM_8;
+suite(#{key_exchange := rsa,
+        cipher := aes_256_ccm_8,
+        mac := aead,
+        prf := sha256}) ->
+    ?TLS_RSA_WITH_AES_256_CCM_8;
+suite(#{key_exchange := dhe_rsa,
+        cipher := aes_128_ccm_8,
+        mac := aead,
+        prf := sha256}) ->
+    ?TLS_DHE_RSA_WITH_AES_128_CCM_8;
+suite(#{key_exchange := dhe_rsa,
+        cipher := aes_256_ccm_8,
+        mac := aead,
+        prf := sha256}) ->
+    ?TLS_DHE_RSA_WITH_AES_256_CCM_8;
+
+%% TLS 1.3 Cipher Suites RFC8446
+suite(#{key_exchange := any,
+        cipher := aes_128_gcm,
+        mac := aead,
+        prf := sha256}) ->
+    ?TLS_AES_128_GCM_SHA256;
+suite(#{key_exchange := any,
+      cipher := aes_256_gcm,
+      mac := aead,
+      prf := sha384}) ->
+    ?TLS_AES_256_GCM_SHA384;
+suite(#{key_exchange := any,
+      cipher := chacha20_poly1305,
+      mac := aead,
+      prf := sha256}) ->
+    ?TLS_CHACHA20_POLY1305_SHA256.
+%% suite(#{key_exchange := any,
+%%       cipher := aes_128_ccm,
+%%       mac := aead,
+%%       prf := sha256}) ->
+%%     ?TLS_AES_128_CCM_SHA256;
+%% suite(#{key_exchange := any,
+%%       cipher := aes_128_ccm_8,
+%%       mac := aead,
+%%       prf := sha256}) ->
+%%     ?TLS_AES_128_CCM_8_SHA256.
 %%--------------------------------------------------------------------
 -spec openssl_suite(openssl_cipher_suite()) -> cipher_suite().
 %%
@@ -1582,10 +1768,23 @@ openssl_suite("ECDHE-RSA-AES256-GCM-SHA384") ->
 openssl_suite("ECDH-RSA-AES128-GCM-SHA256") ->
     ?TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256;
 openssl_suite("ECDH-RSA-AES256-GCM-SHA384") ->
-    ?TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384.
+    ?TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384;
+
+%% TLS 1.3 Cipher Suites RFC8446
+openssl_suite("TLS_AES_128_GCM_SHA256") ->
+    ?TLS_AES_128_GCM_SHA256;
+openssl_suite("TLS_AES_256_GCM_SHA384") ->
+    ?TLS_AES_256_GCM_SHA384;
+openssl_suite("TLS_CHACHA20_POLY1305_SHA256") ->
+    ?TLS_CHACHA20_POLY1305_SHA256.
+%% openssl_suite("TLS_AES_128_CCM_SHA256") ->
+%%     ?TLS_AES_128_CCM_SHA256;
+%% openssl_suite("TLS_AES_128_CCM_8_SHA256") ->
+%%     ?TLS_AES_128_CCM_8_SHA256.
+
 
 %%--------------------------------------------------------------------
--spec openssl_suite_name(cipher_suite()) -> openssl_cipher_suite() | erl_cipher_suite().
+-spec openssl_suite_name(cipher_suite()) -> openssl_cipher_suite() | internal_erl_cipher_suite().
 %%
 %% Description: Return openssl cipher suite name if possible
 %%-------------------------------------------------------------------
@@ -1759,6 +1958,18 @@ openssl_suite_name(?TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256) ->
 openssl_suite_name(?TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384) ->
     "ECDH-RSA-AES256-GCM-SHA384";
 
+%% TLS 1.3 Cipher Suites RFC8446
+openssl_suite_name(?TLS_AES_128_GCM_SHA256) ->
+    "TLS_AES_128_GCM_SHA256";
+openssl_suite_name(?TLS_AES_256_GCM_SHA384) ->
+    "TLS_AES_256_GCM_SHA384";
+openssl_suite_name(?TLS_CHACHA20_POLY1305_SHA256) ->
+    "TLS_CHACHA20_POLY1305_SHA256";
+%% openssl_suite(?TLS_AES_128_CCM_SHA256) ->
+%%     "TLS_AES_128_CCM_SHA256";
+%% openssl_suite(?TLS_AES_128_CCM_8_SHA256) ->
+%%     "TLS_AES_128_CCM_8_SHA256";
+
 %% No oppenssl name
 openssl_suite_name(Cipher) ->
     suite_definition(Cipher).
diff --git a/lib/ssl/src/ssl_connection.erl b/lib/ssl/src/ssl_connection.erl
index 4b406b4c1e..1e97fe046b 100644
--- a/lib/ssl/src/ssl_connection.erl
+++ b/lib/ssl/src/ssl_connection.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2013-2018. All Rights Reserved.
+%% Copyright Ericsson AB 2013-2019. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -35,12 +35,13 @@
 -include("ssl_internal.hrl").
 -include("ssl_srp.hrl").
 -include_lib("public_key/include/public_key.hrl").
+-include_lib("kernel/include/logger.hrl").
 
 %% Setup
 
--export([connect/8, handshake/7, handshake/2, handshake/3,
+-export([connect/8, handshake/7, handshake/2, handshake/3, handle_common_event/5,
          handshake_continue/3, handshake_cancel/1,
-	 socket_control/4, socket_control/5, start_or_recv_cancel_timer/2]).
+	 socket_control/4, socket_control/5]).
 
 %% User Events 
 -export([send/2, recv/3, close/2, shutdown/2,
@@ -51,7 +52,7 @@
 
 %% Alert and close handling
 -export([handle_own_alert/4, handle_alert/3, 
-	 handle_normal_shutdown/3, stop/2, stop_and_reply/3,
+	 handle_normal_shutdown/3, 
          handle_trusted_certs_db/1]).
 
 %% Data handling
@@ -59,7 +60,7 @@
 
 %% Help functions for tls|dtls_connection.erl
 -export([handle_session/7, ssl_config/3,
-	 prepare_connection/2, hibernate_after/3, map_extensions/1]).
+	 prepare_connection/2, hibernate_after/3]).
 
 %% General gen_statem state functions with extra callback argument 
 %% to determine if it is an SSL/TLS or DTLS gen_statem machine
@@ -70,14 +71,14 @@
 -export([terminate/3, format_status/2]).
 
 %% Erlang Distribution export
--export([get_sslsocket/1, dist_handshake_complete/2]).
+-export([dist_handshake_complete/2]).
 
 %%====================================================================
 %% Setup
 %%====================================================================
 %%--------------------------------------------------------------------
 -spec connect(tls_connection | dtls_connection,
-	      host(), inet:port_number(), 
+	      ssl:host(), inet:port_number(), 
 	      port() | {tuple(), port()}, %% TLS | DTLS  
 	      {#ssl_options{}, #socket_options{},
 	       %% Tracker only needed on server side
@@ -143,7 +144,7 @@ handshake(#sslsocket{pid = [Pid|_]} = Socket, SslOptions, Timeout) ->
     end.
 
 %%--------------------------------------------------------------------
--spec handshake_continue(#sslsocket{}, [ssl_option()],
+-spec handshake_continue(#sslsocket{}, [ssl:tls_server_option()],
                          timeout()) ->  {ok,  #sslsocket{}}| {error, reason()}.
 %%
 %% Description: Continues handshake with new options
@@ -182,27 +183,23 @@ socket_control(Connection, Socket, Pid, Transport) ->
 %%--------------------------------------------------------------------	    
 socket_control(Connection, Socket, Pids, Transport, udp_listener) ->
     %% dtls listener process must have the socket control
-    {ok, Connection:socket(Pids, Transport, Socket, Connection, undefined)};
+    {ok, Connection:socket(Pids, Transport, Socket, undefined)};
 
 socket_control(tls_connection = Connection, Socket, [Pid|_] = Pids, Transport, ListenTracker) ->
     case Transport:controlling_process(Socket, Pid) of
 	ok ->
-	    {ok, Connection:socket(Pids, Transport, Socket, Connection, ListenTracker)};
+	    {ok, Connection:socket(Pids, Transport, Socket, ListenTracker)};
 	{error, Reason}	->
 	    {error, Reason}
     end;
 socket_control(dtls_connection = Connection, {_, Socket}, [Pid|_] = Pids, Transport, ListenTracker) ->
     case Transport:controlling_process(Socket, Pid) of
 	ok ->
-	    {ok, Connection:socket(Pids, Transport, Socket, Connection, ListenTracker)};
+	    {ok, Connection:socket(Pids, Transport, Socket, ListenTracker)};
 	{error, Reason}	->
 	    {error, Reason}
     end.
 
-start_or_recv_cancel_timer(infinity, _RecvFrom) ->
-    undefined;
-start_or_recv_cancel_timer(Timeout, RecvFrom) ->
-    erlang:send_after(Timeout, self(), {cancel_start_or_recv, RecvFrom}).
 
 %%====================================================================
 %% User events
@@ -215,9 +212,9 @@ start_or_recv_cancel_timer(Timeout, RecvFrom) ->
 %%--------------------------------------------------------------------
 send(Pid, Data) -> 
     call(Pid, {application_data, 
-				    %% iolist_to_binary should really
-				    %% be called iodata_to_binary()
-				    erlang:iolist_to_binary(Data)}).
+				    %% iolist_to_iovec should really
+				    %% be called iodata_to_iovec()
+				    erlang:iolist_to_iovec(Data)}).
 
 %%--------------------------------------------------------------------
 -spec recv(pid(), integer(), timeout()) ->  
@@ -315,9 +312,6 @@ renegotiation(ConnectionPid) ->
 internal_renegotiation(ConnectionPid, #{current_write := WriteState}) ->
     gen_statem:cast(ConnectionPid, {internal_renegotiate, WriteState}). 
 
-get_sslsocket(ConnectionPid) ->
-    call(ConnectionPid, get_sslsocket).
-
 dist_handshake_complete(ConnectionPid, DHandle) ->
     gen_statem:cast(ConnectionPid, {dist_handshake_complete, DHandle}).
 
@@ -335,8 +329,8 @@ prf(ConnectionPid, Secret, Label, Seed, WantedLength) ->
 %% Alert and close handling
 %%====================================================================
 handle_own_alert(Alert, _, StateName,
-		 #state{role = Role,
-                        protocol_cb = Connection,
+		 #state{static_env = #static_env{role = Role,
+                                                 protocol_cb = Connection},
                         ssl_options = SslOpts} = State) ->
     try %% Try to tell the other side
         send_alert(Alert, StateName, State)
@@ -344,187 +338,356 @@ handle_own_alert(Alert, _, StateName,
 	    ignore
     end,
     try %% Try to tell the local user
-	log_alert(SslOpts#ssl_options.log_alert, Role, Connection:protocol_name(), StateName, Alert#alert{role = Role}),
+	log_alert(SslOpts#ssl_options.log_level, Role,
+	          Connection:protocol_name(), StateName,
+	          Alert#alert{role = Role}),
 	handle_normal_shutdown(Alert,StateName, State)
     catch _:_ ->
 	    ok
     end,
-    stop({shutdown, own_alert}, State).
-
-handle_normal_shutdown(Alert, _, #state{socket = Socket,
-					transport_cb = Transport,
-					protocol_cb = Connection,
-					start_or_recv_from = StartFrom,
-					tracker = Tracker,
-					role = Role, renegotiation = {false, first}} = State) ->
+    {stop, {shutdown, own_alert}, State}.
+
+handle_normal_shutdown(Alert, _, #state{static_env = #static_env{role = Role,
+                                                                 socket = Socket,
+                                                                 transport_cb = Transport,
+                                                                 protocol_cb = Connection,
+                                                                 tracker = Tracker},
+                                        handshake_env = #handshake_env{renegotiation = {false, first}},
+					start_or_recv_from = StartFrom} = State) ->
     Pids = Connection:pids(State),
     alert_user(Pids, Transport, Tracker,Socket, StartFrom, Alert, Role, Connection);
 
-handle_normal_shutdown(Alert, StateName, #state{socket = Socket,
-						socket_options = Opts,
-						transport_cb = Transport,
-						protocol_cb = Connection,
-						user_application = {_Mon, Pid},
-						tracker = Tracker,
-						start_or_recv_from = RecvFrom, role = Role} = State) ->
+handle_normal_shutdown(Alert, StateName, #state{static_env = #static_env{role = Role,
+                                                                         socket = Socket,
+                                                                         transport_cb = Transport,
+                                                                         protocol_cb = Connection,
+                                                                         tracker = Tracker},
+                                                connection_env  = #connection_env{user_application = {_Mon, Pid}},
+                                                socket_options = Opts,
+						start_or_recv_from = RecvFrom} = State) ->
     Pids = Connection:pids(State),
     alert_user(Pids, Transport, Tracker, Socket, StateName, Opts, Pid, RecvFrom, Alert, Role, Connection).
 
 handle_alert(#alert{level = ?FATAL} = Alert, StateName,
-	     #state{socket = Socket, transport_cb = Transport, 
-		    protocol_cb = Connection,
-		    ssl_options = SslOpts, start_or_recv_from = From, host = Host,
-		    port = Port, session = Session, user_application = {_Mon, Pid},
-		    role = Role, socket_options = Opts, tracker = Tracker} = State) ->
+	     #state{static_env = #static_env{role = Role,
+                                             socket = Socket,
+                                             host = Host,
+                                             port = Port,
+                                             tracker = Tracker,
+                                             transport_cb = Transport,
+                                             protocol_cb = Connection},
+                    connection_env  = #connection_env{user_application = {_Mon, Pid}},
+		    ssl_options = SslOpts,
+                    start_or_recv_from = From,
+                    session = Session, 
+		    socket_options = Opts} = State) ->
     invalidate_session(Role, Host, Port, Session),
-    log_alert(SslOpts#ssl_options.log_alert, Role, Connection:protocol_name(), 
+    log_alert(SslOpts#ssl_options.log_level, Role, Connection:protocol_name(), 
               StateName, Alert#alert{role = opposite_role(Role)}),
     Pids = Connection:pids(State),
-    alert_user(Pids, Transport, Tracker, Socket, StateName, Opts, Pid, From, Alert, Role, Connection),
-    stop(normal, State);
+    alert_user(Pids, Transport, Tracker, Socket, StateName, Opts, Pid, From, Alert,
+               opposite_role(Role), Connection),
+    {stop, {shutdown, normal}, State};
 
 handle_alert(#alert{level = ?WARNING, description = ?CLOSE_NOTIFY} = Alert, 
-	     StateName, State) -> 
+	     downgrade= StateName, State) -> 
+    {next_state, StateName, State, [{next_event, internal, Alert}]};
+handle_alert(#alert{level = ?WARNING, description = ?CLOSE_NOTIFY} = Alert, 
+	    StateName, State) -> 
     handle_normal_shutdown(Alert, StateName, State),
-    stop({shutdown, peer_close}, State);
-
+    {stop,{shutdown, peer_close}, State};
 handle_alert(#alert{level = ?WARNING, description = ?NO_RENEGOTIATION} = Alert, StateName, 
-	     #state{role = Role, ssl_options = SslOpts, protocol_cb = Connection, 
-                    renegotiation = {true, internal}} = State) ->
-    log_alert(SslOpts#ssl_options.log_alert, Role, 
+	     #state{static_env = #static_env{role = Role,
+                                             protocol_cb = Connection},
+                    handshake_env = #handshake_env{renegotiation = {true, internal}},
+                    ssl_options = SslOpts} = State) ->
+    log_alert(SslOpts#ssl_options.log_level, Role, 
               Connection:protocol_name(), StateName, Alert#alert{role = opposite_role(Role)}),
     handle_normal_shutdown(Alert, StateName, State),
-    stop({shutdown, peer_close}, State);
+    {stop,{shutdown, peer_close}, State};
 
 handle_alert(#alert{level = ?WARNING, description = ?NO_RENEGOTIATION} = Alert, connection = StateName, 
-	     #state{role = Role,
-                    ssl_options = SslOpts, renegotiation = {true, From},
-		    protocol_cb = Connection} = State0) ->
-    log_alert(SslOpts#ssl_options.log_alert,  Role,
+	     #state{static_env = #static_env{role = Role,
+                                             protocol_cb = Connection},
+                    handshake_env = #handshake_env{renegotiation = {true, From}} = HsEnv,
+                    ssl_options = SslOpts                 
+		   } = State0) ->
+    log_alert(SslOpts#ssl_options.log_level,  Role,
               Connection:protocol_name(), StateName, Alert#alert{role = opposite_role(Role)}),
     gen_statem:reply(From, {error, renegotiation_rejected}),
     State = Connection:reinit_handshake_data(State0),
-    Connection:next_event(connection, no_record, State#state{renegotiation = undefined});
+    Connection:next_event(connection, no_record, State#state{handshake_env = HsEnv#handshake_env{renegotiation = undefined}});
 
 handle_alert(#alert{level = ?WARNING, description = ?NO_RENEGOTIATION} = Alert, StateName, 
-	     #state{role = Role,
-                    ssl_options = SslOpts, renegotiation = {true, From},
-		    protocol_cb = Connection} = State0) ->
-    log_alert(SslOpts#ssl_options.log_alert,  Role,
+	     #state{static_env = #static_env{role = Role,
+                                             protocol_cb = Connection},
+                    handshake_env = #handshake_env{renegotiation = {true, From}} = HsEnv,
+                    ssl_options = SslOpts
+                   } = State0) ->
+    log_alert(SslOpts#ssl_options.log_level,  Role,
               Connection:protocol_name(), StateName, Alert#alert{role = opposite_role(Role)}),
     gen_statem:reply(From, {error, renegotiation_rejected}),
     %% Go back to connection!
-    State = Connection:reinit(State0#state{renegotiation = undefined}),
+    State = Connection:reinit(State0#state{handshake_env = HsEnv#handshake_env{renegotiation = undefined}}),
     Connection:next_event(connection, no_record, State);
 
 %% Gracefully log and ignore all other warning alerts
 handle_alert(#alert{level = ?WARNING} = Alert, StateName,
-	     #state{ssl_options = SslOpts, protocol_cb = Connection, role = Role} = State) ->
-    log_alert(SslOpts#ssl_options.log_alert,  Role,
-              Connection:protocol_name(), StateName, Alert#alert{role = opposite_role(Role)}),
+	     #state{static_env = #static_env{role = Role,
+                                             protocol_cb = Connection},
+                    ssl_options = SslOpts} = State) ->
+    log_alert(SslOpts#ssl_options.log_level, Role,
+              Connection:protocol_name(), StateName,
+              Alert#alert{role = opposite_role(Role)}),
     Connection:next_event(StateName, no_record, State).
 
 %%====================================================================
 %% Data handling
 %%====================================================================
-
-passive_receive(State0 = #state{user_data_buffer = Buffer}, StateName, Connection) -> 
-    case Buffer of
-	<<>> ->
-	    {Record, State} = Connection:next_record(State0),
-	    Connection:next_event(StateName, Record, State);
+passive_receive(State0 = #state{user_data_buffer = {_,BufferSize,_}}, StateName, Connection, StartTimerAction) ->
+    case BufferSize of
+	0 ->
+	    Connection:next_event(StateName, no_record, State0, StartTimerAction);
 	_ ->
 	    case read_application_data(<<>>, State0) of
                 {stop, _, _} = ShutdownError ->
                     ShutdownError;
                 {Record, State} ->
-                    Connection:next_event(StateName, Record, State)
+                    case State#state.start_or_recv_from of
+                        undefined ->
+                            %% Cancel recv timeout as data has been delivered
+                            Connection:next_event(StateName, Record, State, 
+                                                  [{{timeout, recv}, infinity, timeout}]);
+                        _ ->
+                            Connection:next_event(StateName, Record, State, StartTimerAction)
+                    end
             end
     end.
 
-read_application_data(Data, #state{user_application = {_Mon, Pid},
-				   socket = Socket,
-				   protocol_cb = Connection,
-				   transport_cb = Transport,
-				   socket_options = SOpts,
-				   bytes_to_read = BytesToRead,
-				   start_or_recv_from = RecvFrom,
-				   timer = Timer,
-				   user_data_buffer = Buffer0,
-				   tracker = Tracker} = State0) ->
-    Buffer1 = if 
-		  Buffer0 =:= <<>> -> Data;
-		  Data =:= <<>> -> Buffer0;
-		  true -> <<Buffer0/binary, Data/binary>>
-	      end,
-    case get_data(SOpts, BytesToRead, Buffer1) of
-	{ok, ClientData, Buffer} -> % Send data
-            #state{ssl_options = #ssl_options{erl_dist = Dist},
-                   erl_dist_data = DistData} = State0,
-            case Dist andalso is_dist_up(DistData) of                
-                       true ->                                
-                           dist_app_data(ClientData, State0#state{user_data_buffer = Buffer,
-                                                                      bytes_to_read = undefined});
-                       _ ->
-                           SocketOpt =
-                               deliver_app_data(Connection:pids(State0),
-                                                Transport, Socket, SOpts,
-                                                ClientData, Pid, RecvFrom, Tracker, Connection),
-                           cancel_timer(Timer),
-                           State =
-                               State0#state{
-                                 user_data_buffer = Buffer,
-                          start_or_recv_from = undefined,
-                          timer = undefined,
-                          bytes_to_read = undefined,
-                          socket_options = SocketOpt
-                                },
-                           if
-                               SocketOpt#socket_options.active =:= false;
-                               Buffer =:= <<>> ->
-                                   %% Passive mode, wait for active once or recv
-                            %% Active and empty, get more data
-                                   {no_record, State};
-                               true -> %% We have more data
-                                   read_application_data(<<>>, State)
-                           end
-                   end;
-	{more, Buffer} -> % no reply, we need more data
-            {no_record, State0#state{user_data_buffer = Buffer}};
-	{passive, Buffer} ->
-	    {no_record, State0#state{user_data_buffer = Buffer}};
-	{error,_Reason} -> %% Invalid packet in packet mode
-	    deliver_packet_error(Connection:pids(State0),
-                                 Transport, Socket, SOpts, Buffer1, Pid, RecvFrom, Tracker, Connection),
-            stop(normal, State0)
+read_application_data(
+  Data,
+  #state{
+     user_data_buffer = {Front0,BufferSize0,Rear0},
+     connection_env = #connection_env{erl_dist_handle = DHandle}} = State) ->
+    %%
+    Front = Front0,
+    BufferSize = BufferSize0 + byte_size(Data),
+    Rear = [Data|Rear0],
+    case DHandle of
+        undefined ->
+            read_application_data(State, Front, BufferSize, Rear);
+        _ ->
+            try read_application_dist_data(DHandle, Front, BufferSize, Rear) of
+                Buffer ->
+                    {no_record, State#state{user_data_buffer = Buffer}}
+            catch error:_ ->
+                    {stop,disconnect,
+                     State#state{user_data_buffer = {Front,BufferSize,Rear}}}
+            end
     end.
 
-dist_app_data(ClientData, #state{erl_dist_data = #{dist_handle := undefined,
-                                                   dist_buffer := DistBuff} = DistData} = State) ->
-    {no_record, State#state{erl_dist_data = DistData#{dist_buffer => [ClientData, DistBuff]}}};
-dist_app_data(ClientData, #state{erl_dist_data = #{dist_handle := DHandle,
-                                                   dist_buffer := DistBuff} = ErlDistData,
-                                 user_data_buffer = Buffer,
-                                 socket_options = SOpts} = State) ->
-    Data = merge_dist_data(DistBuff, ClientData),
-    try erlang:dist_ctrl_put_data(DHandle, Data) of
-        _ when SOpts#socket_options.active =:= false;
-               Buffer =:= <<>> ->
+
+read_application_data(#state{
+                         socket_options = SocketOpts,
+                         bytes_to_read = BytesToRead,
+                         start_or_recv_from = RecvFrom} = State, Front, BufferSize, Rear) ->
+    read_application_data(State, Front, BufferSize, Rear, SocketOpts, RecvFrom, BytesToRead).
+
+%% Pick binary from queue front, if empty wait for more data
+read_application_data(State, [Bin|Front], BufferSize, Rear, SocketOpts, RecvFrom, BytesToRead) ->
+    read_application_data_bin(State, Front, BufferSize, Rear, SocketOpts, RecvFrom, BytesToRead, Bin);
+read_application_data(State, [] = Front, BufferSize, [] = Rear, SocketOpts, RecvFrom, BytesToRead) ->
+    0 = BufferSize, % Assert
+    {no_record, State#state{socket_options = SocketOpts,
+                            bytes_to_read = BytesToRead,
+                            start_or_recv_from = RecvFrom,
+                            user_data_buffer = {Front,BufferSize,Rear}}};
+read_application_data(State, [], BufferSize, Rear, SocketOpts, RecvFrom, BytesToRead) ->
+    [Bin|Front] = lists:reverse(Rear),
+    read_application_data_bin(State, Front, BufferSize, [], SocketOpts, RecvFrom, BytesToRead, Bin).
+
+read_application_data_bin(State, Front, BufferSize, Rear, SocketOpts, RecvFrom, BytesToRead, <<>>) ->
+    %% Done with this binary - get next
+    read_application_data(State, Front, BufferSize, Rear, SocketOpts, RecvFrom, BytesToRead);
+read_application_data_bin(State, Front0, BufferSize0, Rear0, SocketOpts0, RecvFrom, BytesToRead, Bin0) ->
+    %% Decode one packet from a binary
+    case get_data(SocketOpts0, BytesToRead, Bin0) of
+	{ok, Data, Bin} -> % Send data
+            BufferSize = BufferSize0 - (byte_size(Bin0) - byte_size(Bin)),
+            read_application_data_deliver(
+              State, [Bin|Front0], BufferSize, Rear0, SocketOpts0, RecvFrom, Data);
+        {more, undefined} ->
+            %% We need more data, do not know how much
+            if
+                byte_size(Bin0) < BufferSize0 ->
+                    %% We have more data in the buffer besides the first binary - concatenate all and retry
+                    Bin = iolist_to_binary([Bin0,Front0|lists:reverse(Rear0)]),
+                    read_application_data_bin(
+                      State, [], BufferSize0, [], SocketOpts0, RecvFrom, BytesToRead, Bin);
+                true ->
+                    %% All data is in the first binary, no use to retry - wait for more
+                    {no_record, State#state{socket_options = SocketOpts0,
+                                            bytes_to_read = BytesToRead,
+                                            start_or_recv_from = RecvFrom,
+                                            user_data_buffer = {[Bin0|Front0],BufferSize0,Rear0}}}
+            end;
+        {more, Size} when Size =< BufferSize0 ->
+            %% We have a packet in the buffer - collect it in a binary and decode
+            {Data,Front,Rear} = iovec_from_front(Size - byte_size(Bin0), Front0, Rear0, [Bin0]),
+            Bin = iolist_to_binary(Data),
+            read_application_data_bin(
+              State, Front, BufferSize0, Rear, SocketOpts0, RecvFrom, BytesToRead, Bin);
+        {more, _Size} ->
+            %% We do not have a packet in the buffer - wait for more
+            {no_record, State#state{socket_options = SocketOpts0,
+                                    bytes_to_read = BytesToRead,
+                                    start_or_recv_from = RecvFrom,
+                                    user_data_buffer = {[Bin0|Front0],BufferSize0,Rear0}}};
+        passive ->
+            {no_record, State#state{socket_options = SocketOpts0,
+                                    bytes_to_read = BytesToRead,
+                                    start_or_recv_from = RecvFrom,
+                                    user_data_buffer = {[Bin0|Front0],BufferSize0,Rear0}}};
+	{error,_Reason} ->
+            %% Invalid packet in packet mode
+            #state{
+               static_env =
+                   #static_env{
+                      socket = Socket,
+                      protocol_cb = Connection,
+                      transport_cb = Transport,
+                      tracker = Tracker},
+               connection_env =
+                   #connection_env{user_application = {_Mon, Pid}}} = State,
+            Buffer = iolist_to_binary([Bin0,Front0|lists:reverse(Rear0)]),
+	    deliver_packet_error(
+              Connection:pids(State), Transport, Socket, SocketOpts0,
+              Buffer, Pid, RecvFrom, Tracker, Connection),
+            {stop, {shutdown, normal}, State#state{socket_options = SocketOpts0,
+                                                   bytes_to_read = BytesToRead,
+                                                   start_or_recv_from = RecvFrom,
+                                                   user_data_buffer = {[Buffer],BufferSize0,[]}}}
+    end.
+
+read_application_data_deliver(State, Front, BufferSize, Rear, SocketOpts0, RecvFrom, Data) ->
+    #state{
+       static_env =
+           #static_env{
+              socket = Socket,
+              protocol_cb = Connection,
+              transport_cb = Transport,
+              tracker = Tracker},
+       connection_env =
+           #connection_env{user_application = {_Mon, Pid}}} = State,
+    SocketOpts =
+        deliver_app_data(
+          Connection:pids(State), Transport, Socket, SocketOpts0, Data, Pid, RecvFrom, Tracker, Connection),
+    if
+        SocketOpts#socket_options.active =:= false ->
             %% Passive mode, wait for active once or recv
-            %% Active and empty, get more data
-            {no_record, State#state{erl_dist_data = ErlDistData#{dist_buffer => <<>>}}};
-        _ -> %% We have more data
-            read_application_data(<<>>, State)
-    catch error:_ ->
-            stop(State, disconnect)
+            {no_record,
+             State#state{
+               user_data_buffer = {Front,BufferSize,Rear},
+               start_or_recv_from = undefined,
+                bytes_to_read = undefined,
+               socket_options = SocketOpts
+              }};
+        true -> %% Try to deliver more data
+            read_application_data(State, Front, BufferSize, Rear, SocketOpts, undefined, undefined)
+    end.
+
+
+read_application_dist_data(DHandle, [Bin|Front], BufferSize, Rear) ->
+    read_application_dist_data(DHandle, Front, BufferSize, Rear, Bin);
+read_application_dist_data(_DHandle, [] = Front, BufferSize, [] = Rear) ->
+    BufferSize = 0,
+    {Front,BufferSize,Rear};
+read_application_dist_data(DHandle, [], BufferSize, Rear) ->
+    [Bin|Front] = lists:reverse(Rear),
+    read_application_dist_data(DHandle, Front, BufferSize, [], Bin).
+%%
+read_application_dist_data(DHandle, Front0, BufferSize, Rear0, Bin0) ->
+    case Bin0 of
+        %%
+        %% START Optimization
+        %% It is cheaper to match out several packets in one match operation than to loop for each
+        <<SizeA:32, DataA:SizeA/binary,
+          SizeB:32, DataB:SizeB/binary,
+          SizeC:32, DataC:SizeC/binary,
+          SizeD:32, DataD:SizeD/binary, Rest/binary>> ->
+            %% We have 4 complete packets in the first binary
+            erlang:dist_ctrl_put_data(DHandle, DataA),
+            erlang:dist_ctrl_put_data(DHandle, DataB),
+            erlang:dist_ctrl_put_data(DHandle, DataC),
+            erlang:dist_ctrl_put_data(DHandle, DataD),
+            read_application_dist_data(
+              DHandle, Front0, BufferSize - (4*4+SizeA+SizeB+SizeC+SizeD), Rear0, Rest);
+        <<SizeA:32, DataA:SizeA/binary,
+          SizeB:32, DataB:SizeB/binary,
+          SizeC:32, DataC:SizeC/binary, Rest/binary>> ->
+            %% We have 3 complete packets in the first binary
+            erlang:dist_ctrl_put_data(DHandle, DataA),
+            erlang:dist_ctrl_put_data(DHandle, DataB),
+            erlang:dist_ctrl_put_data(DHandle, DataC),
+            read_application_dist_data(
+              DHandle, Front0, BufferSize - (3*4+SizeA+SizeB+SizeC), Rear0, Rest);
+        <<SizeA:32, DataA:SizeA/binary,
+          SizeB:32, DataB:SizeB/binary, Rest/binary>> ->
+            %% We have 2 complete packets in the first binary
+            erlang:dist_ctrl_put_data(DHandle, DataA),
+            erlang:dist_ctrl_put_data(DHandle, DataB),
+            read_application_dist_data(
+              DHandle, Front0, BufferSize - (2*4+SizeA+SizeB), Rear0, Rest);
+        %% END Optimization
+        %%
+        %% Basic one packet code path
+        <<Size:32, Data:Size/binary, Rest/binary>> ->
+            %% We have a complete packet in the first binary
+            erlang:dist_ctrl_put_data(DHandle, Data),
+            read_application_dist_data(DHandle, Front0, BufferSize - (4+Size), Rear0, Rest);
+        <<Size:32, FirstData/binary>> when 4+Size =< BufferSize ->
+            %% We have a complete packet in the buffer
+            %% - fetch the missing content from the buffer front
+            {Data,Front,Rear} = iovec_from_front(Size - byte_size(FirstData), Front0, Rear0, [FirstData]),
+            erlang:dist_ctrl_put_data(DHandle, Data),
+            read_application_dist_data(DHandle, Front, BufferSize - (4+Size), Rear);
+        <<Bin/binary>> ->
+            %% In OTP-21 the match context reuse optimization fails if we use Bin0 in recursion, so here we
+            %% match out the whole binary which will trick the optimization into keeping the match context
+            %% for the first binary contains complete packet code above
+            case Bin of
+                <<_Size:32, _InsufficientData/binary>> ->
+                    %% We have a length field in the first binary but there is not enough data
+                    %% in the buffer to form a complete packet - await more data
+                    {[Bin|Front0],BufferSize,Rear0};
+                <<IncompleteLengthField/binary>> when 4 < BufferSize ->
+                    %% We do not have a length field in the first binary but the buffer
+                    %% contains enough data to maybe form a packet
+                    %% - fetch a tiny binary from the buffer front to complete the length field
+                    {LengthField,Front,Rear} =
+                        iovec_from_front(4 - byte_size(IncompleteLengthField), Front0, Rear0, [IncompleteLengthField]),
+                    LengthBin = iolist_to_binary(LengthField),
+                    read_application_dist_data(DHandle, Front, BufferSize, Rear, LengthBin);
+                <<IncompleteLengthField/binary>> ->
+                    %% We do not have enough data in the buffer to even form a length field - await more data
+                    {[IncompleteLengthField|Front0],BufferSize,Rear0}
+            end
     end.
 
-merge_dist_data(<<>>, ClientData) ->
-    ClientData;
-merge_dist_data(DistBuff, <<>>) ->
-    DistBuff;
-merge_dist_data(DistBuff, ClientData) ->
-    [DistBuff, ClientData].
+iovec_from_front(Size, [], Rear, Acc) ->
+    iovec_from_front(Size, lists:reverse(Rear), [], Acc);
+iovec_from_front(Size, [Bin|Front], Rear, Acc) ->
+    case Bin of
+        <<Last:Size/binary>> -> % Just enough
+            {lists:reverse(Acc, [Last]),Front,Rear};
+        <<Last:Size/binary, Rest/binary>> -> % More than enough, split here
+            {lists:reverse(Acc, [Last]),[Rest|Front],Rear};
+        <<_/binary>> -> % Not enough
+            BinSize = byte_size(Bin),
+            iovec_from_front(Size - BinSize, Front, Rear, [Bin|Acc])
+    end.
+
+
 %%====================================================================
 %% Help functions for tls|dtls_connection.erl
 %%====================================================================
@@ -537,8 +700,8 @@ handle_session(#server_hello{cipher_suite = CipherSuite,
 			     compression_method = Compression}, 
 	       Version, NewId, ConnectionStates, ProtoExt, Protocol0,
 	       #state{session = #session{session_id = OldId},
-		      negotiated_version = ReqVersion,
-		      negotiated_protocol = CurrentProtocol} = State0) ->
+		      handshake_env = #handshake_env{negotiated_protocol = CurrentProtocol} = HsEnv,
+                      connection_env = #connection_env{negotiated_version = ReqVersion} = CEnv} = State0) ->
     #{key_exchange := KeyAlgorithm} =
 	ssl_cipher_format:suite_definition(CipherSuite),
     
@@ -551,12 +714,12 @@ handle_session(#server_hello{cipher_suite = CipherSuite,
 				    {ProtoExt =:= npn, Protocol0}
 			    end,
 
-    State = State0#state{key_algorithm = KeyAlgorithm,
-			 negotiated_version = Version,
-			 connection_states = ConnectionStates,
-			 premaster_secret = PremasterSecret,
-			 expecting_next_protocol_negotiation = ExpectNPN,
-			 negotiated_protocol = Protocol},
+    State = State0#state{connection_states = ConnectionStates,
+			 handshake_env = HsEnv#handshake_env{kex_algorithm = KeyAlgorithm,
+                                                             premaster_secret = PremasterSecret,
+                                                             expecting_next_protocol_negotiation = ExpectNPN,
+                                                             negotiated_protocol = Protocol},
+                         connection_env = CEnv#connection_env{negotiated_version = Version}},
     
     case ssl_session:is_new(OldId, NewId) of
 	true ->
@@ -570,10 +733,9 @@ handle_session(#server_hello{cipher_suite = CipherSuite,
 %%--------------------------------------------------------------------
 -spec ssl_config(#ssl_options{}, client | server, #state{}) -> #state{}.
 %%--------------------------------------------------------------------
-ssl_config(Opts, Role, State) ->
-    ssl_config(Opts, Role, State, new).
-
-ssl_config(Opts, Role, State0, Type) ->
+ssl_config(Opts, Role, #state{static_env = InitStatEnv0, 
+                              handshake_env = HsEnv,
+                              connection_env = CEnv} = State0) ->
     {ok, #{cert_db_ref := Ref, 
            cert_db_handle := CertDbHandle, 
            fileref_db_handle := FileRefHandle, 
@@ -585,24 +747,19 @@ ssl_config(Opts, Role, State0, Type) ->
 	ssl_config:init(Opts, Role), 
     TimeStamp = erlang:monotonic_time(),
     Session = State0#state.session,
-    State = State0#state{session = Session#session{own_certificate = OwnCert,
-                                                   time_stamp = TimeStamp},
-                         file_ref_db = FileRefHandle,
-                         cert_db_ref = Ref,
-                         cert_db = CertDbHandle,
-                         crl_db = CRLDbHandle,
-                         session_cache = CacheHandle,
-                         private_key = Key,
-                         diffie_hellman_params = DHParams,
-                         ssl_options = Opts},
-    case Type of
-        new ->
-            Handshake = ssl_handshake:init_handshake_history(),
-            State#state{tls_handshake_history = Handshake};
-        continue ->
-            State
-    end.
-
+    
+    State0#state{session = Session#session{own_certificate = OwnCert,
+                                           time_stamp = TimeStamp},
+                 static_env = InitStatEnv0#static_env{
+                                file_ref_db = FileRefHandle,
+                                cert_db_ref = Ref,
+                                cert_db = CertDbHandle,
+                                crl_db = CRLDbHandle,
+                                session_cache = CacheHandle
+                               },
+                 handshake_env = HsEnv#handshake_env{diffie_hellman_params = DHParams},
+                 connection_env = CEnv#connection_env{private_key = Key},
+                 ssl_options = Opts}.
 
 %%====================================================================
 %% gen_statem general state functions with connection cb argument
@@ -615,10 +772,11 @@ ssl_config(Opts, Role, State0, Type) ->
 %%--------------------------------------------------------------------
 
 init({call, From}, {start, Timeout}, State0, Connection) ->
-    Timer = start_or_recv_cancel_timer(Timeout, From),
-    Connection:next_event(hello, no_record, State0#state{start_or_recv_from = From, timer = Timer});
+    Connection:next_event(hello, no_record, State0#state{start_or_recv_from = From},
+                          [{{timeout, handshake}, Timeout, close}]);
 init({call, From}, {start, {Opts, EmOpts}, Timeout}, 
-     #state{role = Role, ssl_options = OrigSSLOptions,
+     #state{static_env = #static_env{role = Role},
+            ssl_options = OrigSSLOptions,
             socket_options = SockOpts} = State0, Connection) ->
     try 
         SslOpts = ssl:handle_options(Opts, OrigSSLOptions),
@@ -627,7 +785,7 @@ init({call, From}, {start, {Opts, EmOpts}, Timeout},
 	     State#state{ssl_options = SslOpts, 
                          socket_options = new_emulated(EmOpts, SockOpts)}, Connection)
     catch throw:Error ->
-	    stop_and_reply(normal, {reply, From, {error, Error}}, State0)
+	   {stop_and_reply, {shutdown, normal}, {reply, From, {error, Error}}, State0}
     end;
 init({call, From}, {new_user, _} = Msg, State, Connection) ->
     handle_call(Msg, From, ?FUNCTION_NAME, State, Connection);
@@ -643,7 +801,7 @@ init(_Type, _Event, _State, _Connection) ->
 		   gen_statem:state_function_result().
 %%--------------------------------------------------------------------
 error({call, From}, {close, _}, State, _Connection) ->
-    stop_and_reply(normal, {reply, From, ok}, State);
+    {stop_and_reply, {shutdown, normal}, {reply, From, ok}, State};
 error({call, From}, _Msg, State, _Connection) ->
     {next_state, ?FUNCTION_NAME, State, [{reply, From, {error, closed}}]}.
 
@@ -662,20 +820,18 @@ hello(info, Msg, State, _) ->
 hello(Type, Msg, State, Connection) ->
     handle_common_event(Type, Msg, ?FUNCTION_NAME, State, Connection).
 
-user_hello({call, From}, cancel, #state{negotiated_version = Version} = State, _) ->
+user_hello({call, From}, cancel, #state{connection_env = #connection_env{negotiated_version = Version}} = State, _) ->
     gen_statem:reply(From, ok),
     handle_own_alert(?ALERT_REC(?FATAL, ?USER_CANCELED, user_canceled),
                      Version, ?FUNCTION_NAME, State);
-user_hello({call, From}, {handshake_continue, NewOptions, Timeout}, #state{hello = Hello,
-                                                                           role = Role,
-                                                                           start_or_recv_from = RecvFrom,
-                                                                           ssl_options = Options0} = State0, _Connection) ->
-    Timer = start_or_recv_cancel_timer(Timeout, RecvFrom),
+user_hello({call, From}, {handshake_continue, NewOptions, Timeout},
+           #state{static_env = #static_env{role = Role},
+                  handshake_env = #handshake_env{hello = Hello},
+                  ssl_options = Options0} = State0, _Connection) ->
     Options = ssl:handle_options(NewOptions, Options0#ssl_options{handshake = full}),
-    State = ssl_config(Options, Role, State0, continue),
-    {next_state, hello, State#state{start_or_recv_from = From,
-                                    timer = Timer}, 
-     [{next_event, internal, Hello}]};
+    State = ssl_config(Options, Role, State0),
+    {next_state, hello, State#state{start_or_recv_from = From}, 
+     [{next_event, internal, Hello}, {{timeout, handshake}, Timeout, close}]};
 user_hello(_, _, _, _) ->
     {keep_state_and_data, [postpone]}.
 
@@ -688,60 +844,63 @@ user_hello(_, _, _, _) ->
 abbreviated({call, From}, Msg, State, Connection) ->
     handle_call(Msg, From, ?FUNCTION_NAME, State, Connection);
 abbreviated(internal, #finished{verify_data = Data} = Finished,
-	    #state{role = server,
-		   negotiated_version = Version,
-		   expecting_finished = true,
-		   tls_handshake_history = Handshake,
+	    #state{static_env = #static_env{role = server},
+                   handshake_env = #handshake_env{tls_handshake_history = Hist,
+                                                  expecting_finished = true} = HsEnv,
+		   connection_env = #connection_env{negotiated_version = Version},
 		   session = #session{master_secret = MasterSecret},
 		   connection_states = ConnectionStates0} =
 		State0, Connection) ->
     case ssl_handshake:verify_connection(ssl:tls_version(Version), Finished, client,
 					 get_current_prf(ConnectionStates0, write),
-					 MasterSecret, Handshake) of
+					 MasterSecret, Hist) of
         verified ->
 	    ConnectionStates =
 		ssl_record:set_client_verify_data(current_both, Data, ConnectionStates0),
 	    {Record, State} = prepare_connection(State0#state{connection_states = ConnectionStates,
-							      expecting_finished = false}, Connection),
-	    Connection:next_event(connection, Record, State);
+                                                              handshake_env = HsEnv#handshake_env{expecting_finished = false}}, Connection),
+	    Connection:next_event(connection, Record, State, [{{timeout, handshake}, infinity, close}]);
 	#alert{} = Alert ->
 	    handle_own_alert(Alert, Version, ?FUNCTION_NAME, State0)
     end;
 abbreviated(internal, #finished{verify_data = Data} = Finished,
-	    #state{role = client, tls_handshake_history = Handshake0,
+	    #state{static_env = #static_env{role = client},
+                   handshake_env = #handshake_env{tls_handshake_history = Hist0},
+                   connection_env = #connection_env{negotiated_version = Version},
 		   session = #session{master_secret = MasterSecret},
-		   negotiated_version = Version,
 		   connection_states = ConnectionStates0} = State0, Connection) ->
     case ssl_handshake:verify_connection(ssl:tls_version(Version), Finished, server,
 					 get_pending_prf(ConnectionStates0, write),
-					 MasterSecret, Handshake0) of
+					 MasterSecret, Hist0) of
         verified ->
 	    ConnectionStates1 =
 		ssl_record:set_server_verify_data(current_read, Data, ConnectionStates0),
-	    {State1, Actions} =
+	    {#state{handshake_env = HsEnv} = State1, Actions} =
 		finalize_handshake(State0#state{connection_states = ConnectionStates1},
 				   ?FUNCTION_NAME, Connection),
-	    {Record, State} = prepare_connection(State1#state{expecting_finished = false}, Connection),
-	    Connection:next_event(connection, Record, State, Actions);
+	    {Record, State} = prepare_connection(State1#state{handshake_env = HsEnv#handshake_env{expecting_finished = false}}, Connection),
+	    Connection:next_event(connection, Record, State, [{{timeout, handshake}, infinity, close} | Actions]);
 	#alert{} = Alert ->
 	    handle_own_alert(Alert, Version, ?FUNCTION_NAME, State0)
     end;
 %% only allowed to send next_protocol message after change cipher spec
 %% & before finished message and it is not allowed during renegotiation
 abbreviated(internal, #next_protocol{selected_protocol = SelectedProtocol},
-	    #state{role = server, expecting_next_protocol_negotiation = true} = State,
+	    #state{static_env = #static_env{role = server},
+                   handshake_env = #handshake_env{expecting_next_protocol_negotiation = true} = HsEnv} = State,
 	    Connection) ->
     Connection:next_event(?FUNCTION_NAME, no_record, 
-			  State#state{negotiated_protocol = SelectedProtocol,
-                                      expecting_next_protocol_negotiation = false});
+			  State#state{handshake_env = HsEnv#handshake_env{negotiated_protocol = SelectedProtocol,
+                                                                         expecting_next_protocol_negotiation = false}});
 abbreviated(internal, 
 	    #change_cipher_spec{type = <<1>>},  
-            #state{connection_states = ConnectionStates0} = State, Connection) ->
+            #state{connection_states = ConnectionStates0,
+                   handshake_env = HsEnv} = State, Connection) ->
     ConnectionStates1 =
 	ssl_record:activate_pending_connection_state(ConnectionStates0, read, Connection),
     Connection:next_event(?FUNCTION_NAME, no_record, State#state{connection_states = 
                                                                      ConnectionStates1,
-                                                                 expecting_finished = true});
+                                                                 handshake_env = HsEnv#handshake_env{expecting_finished = true}});
 abbreviated(info, Msg, State, _) ->
     handle_info(Msg, ?FUNCTION_NAME, State);
 abbreviated(Type, Msg, State, Connection) ->
@@ -759,32 +918,34 @@ certify({call, From}, Msg, State, Connection) ->
 certify(info, Msg, State, _) ->
     handle_info(Msg, ?FUNCTION_NAME, State);
 certify(internal, #certificate{asn1_certificates = []},
-	#state{role = server, negotiated_version = Version,
+	#state{static_env = #static_env{role = server},
+               connection_env = #connection_env{negotiated_version = Version},
 	       ssl_options = #ssl_options{verify = verify_peer,
 					  fail_if_no_peer_cert = true}} =
 	    State, _) ->
     Alert =  ?ALERT_REC(?FATAL,?HANDSHAKE_FAILURE),
     handle_own_alert(Alert, Version, ?FUNCTION_NAME, State);
 certify(internal, #certificate{asn1_certificates = []},
-	#state{role = server,
+	#state{static_env = #static_env{role = server},
 	       ssl_options = #ssl_options{verify = verify_peer,
 					  fail_if_no_peer_cert = false}} =
 	State0, Connection) ->
     Connection:next_event(?FUNCTION_NAME, no_record, State0#state{client_certificate_requested = false});
 certify(internal, #certificate{},
-	#state{role = server,
-	       negotiated_version = Version,
+	#state{static_env = #static_env{role = server},
+               connection_env = #connection_env{negotiated_version = Version},
 	       ssl_options = #ssl_options{verify = verify_none}} =
 	    State, _) ->
     Alert =  ?ALERT_REC(?FATAL,?UNEXPECTED_MESSAGE, unrequested_certificate),
     handle_own_alert(Alert, Version, ?FUNCTION_NAME, State);
 certify(internal, #certificate{} = Cert,
-        #state{negotiated_version = Version,
-	       role = Role,
-               host = Host,
-	       cert_db = CertDbHandle,
-	       cert_db_ref = CertDbRef,
-	       crl_db = CRLDbInfo,
+        #state{static_env = #static_env{
+                               role = Role,
+                               host = Host,
+                               cert_db = CertDbHandle,
+                               cert_db_ref = CertDbRef,
+                               crl_db = CRLDbInfo},
+               connection_env = #connection_env{negotiated_version = Version},
 	       ssl_options = Opts} = State, Connection) ->
     case ssl_handshake:certify(Cert, CertDbHandle, CertDbRef, 
 			       Opts, CRLDbInfo, Role, Host) of
@@ -795,112 +956,132 @@ certify(internal, #certificate{} = Cert,
             handle_own_alert(Alert, Version, ?FUNCTION_NAME, State)
     end;
 certify(internal, #server_key_exchange{exchange_keys = Keys},
-        #state{role = client, negotiated_version = Version,
-	       key_algorithm = Alg,
-	       public_key_info = PubKeyInfo,
+        #state{static_env = #static_env{role = client},
+               handshake_env = #handshake_env{kex_algorithm = KexAlg,
+                                              public_key_info = PubKeyInfo} = HsEnv,
+               connection_env = #connection_env{negotiated_version = Version},
                session = Session,
 	       connection_states = ConnectionStates} = State, Connection)
-  when Alg == dhe_dss; Alg == dhe_rsa;
-       Alg == ecdhe_rsa; Alg == ecdhe_ecdsa;
-       Alg == dh_anon; Alg == ecdh_anon;
-       Alg == psk; Alg == dhe_psk; Alg == ecdhe_psk; Alg == rsa_psk;
-       Alg == srp_dss; Alg == srp_rsa; Alg == srp_anon ->
-
-    Params = ssl_handshake:decode_server_key(Keys, Alg, ssl:tls_version(Version)),
+  when KexAlg == dhe_dss; 
+       KexAlg == dhe_rsa;
+       KexAlg == ecdhe_rsa; 
+       KexAlg == ecdhe_ecdsa;
+       KexAlg == dh_anon; 
+       KexAlg == ecdh_anon;
+       KexAlg == psk; 
+       KexAlg == dhe_psk; 
+       KexAlg == ecdhe_psk; 
+       KexAlg == rsa_psk;
+       KexAlg == srp_dss; 
+       KexAlg == srp_rsa; 
+       KexAlg == srp_anon ->
+
+    Params = ssl_handshake:decode_server_key(Keys, KexAlg, ssl:tls_version(Version)),
 
     %% Use negotiated value if TLS-1.2 otherwhise return default
-    HashSign = negotiated_hashsign(Params#server_key_params.hashsign, Alg, PubKeyInfo, ssl:tls_version(Version)),
+    HashSign = negotiated_hashsign(Params#server_key_params.hashsign, KexAlg, PubKeyInfo, ssl:tls_version(Version)),
 
-    case is_anonymous(Alg) of
+    case is_anonymous(KexAlg) of
 	true ->
 	    calculate_secret(Params#server_key_params.params,
-			     State#state{hashsign_algorithm = HashSign}, Connection);
+			     State#state{handshake_env = HsEnv#handshake_env{hashsign_algorithm = HashSign}}, Connection);
 	false ->
 	    case  ssl_handshake:verify_server_key(Params, HashSign, 
 						  ConnectionStates, ssl:tls_version(Version), PubKeyInfo) of
 		true ->
 		    calculate_secret(Params#server_key_params.params,
-				     State#state{hashsign_algorithm = HashSign,
-                                                 session = session_handle_params(Params#server_key_params.params, Session)}, 
-				     Connection);
+				     State#state{handshake_env = HsEnv#handshake_env{hashsign_algorithm = HashSign},
+                                                 session = session_handle_params(Params#server_key_params.params, Session)},
+                    Connection);
 		false ->
 		    handle_own_alert(?ALERT_REC(?FATAL, ?DECRYPT_ERROR),
 						Version, ?FUNCTION_NAME, State)
 	    end
     end;
 certify(internal, #certificate_request{},
-	#state{role = client, negotiated_version = Version,
-               key_algorithm = Alg} = State, _)
-  when Alg == dh_anon; Alg == ecdh_anon;
-       Alg == psk; Alg == dhe_psk; Alg == ecdhe_psk; Alg == rsa_psk;
-       Alg == srp_dss; Alg == srp_rsa; Alg == srp_anon ->
+	#state{static_env = #static_env{role = client},
+               handshake_env = #handshake_env{kex_algorithm = KexAlg},
+               connection_env = #connection_env{negotiated_version = Version}} = State, _)
+  when KexAlg == dh_anon; 
+       KexAlg == ecdh_anon;
+       KexAlg == psk; 
+       KexAlg == dhe_psk; 
+       KexAlg == ecdhe_psk; 
+       KexAlg == rsa_psk;
+       KexAlg == srp_dss; 
+       KexAlg == srp_rsa; 
+       KexAlg == srp_anon ->
     handle_own_alert(?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE),
                      Version, ?FUNCTION_NAME, State);
 certify(internal, #certificate_request{},
-	#state{session = #session{own_certificate = undefined},
-	       role = client} = State, Connection) ->
+	#state{static_env = #static_env{role = client},
+               session = #session{own_certificate = undefined}} = State, Connection) ->
     %% The client does not have a certificate and will send an empty reply, the server may fail 
     %% or accept the connection by its own preference. No signature algorihms needed as there is
     %% no certificate to verify.
     Connection:next_event(?FUNCTION_NAME, no_record, State#state{client_certificate_requested = true});
 certify(internal, #certificate_request{} = CertRequest,
-	#state{session = #session{own_certificate = Cert},
-	       role = client,
-	       ssl_options = #ssl_options{signature_algs = SupportedHashSigns},
-	       negotiated_version = Version} = State, Connection) ->
-    case ssl_handshake:select_hashsign(CertRequest, Cert, SupportedHashSigns, ssl:tls_version(Version)) of
+	#state{static_env = #static_env{role = client},
+               handshake_env = HsEnv,
+               connection_env = #connection_env{negotiated_version = Version},
+               session = #session{own_certificate = Cert},
+               ssl_options = #ssl_options{signature_algs = SupportedHashSigns}} = State, Connection) ->
+    case ssl_handshake:select_hashsign(CertRequest, Cert, 
+                                       SupportedHashSigns, ssl:tls_version(Version)) of
 	#alert {} = Alert ->
 	    handle_own_alert(Alert, Version, ?FUNCTION_NAME, State);
 	NegotiatedHashSign -> 	
 	    Connection:next_event(?FUNCTION_NAME, no_record,
 				  State#state{client_certificate_requested = true,
-                                              cert_hashsign_algorithm = NegotiatedHashSign})
+                                              handshake_env = HsEnv#handshake_env{cert_hashsign_algorithm = NegotiatedHashSign}})
     end;
 %% PSK and RSA_PSK might bypass the Server-Key-Exchange
 certify(internal, #server_hello_done{},
-	#state{session = #session{master_secret = undefined},
-	       negotiated_version = Version,
-	       psk_identity = PSKIdentity,
-	       ssl_options = #ssl_options{user_lookup_fun = PSKLookup},
-	       premaster_secret = undefined,
-	       role = client,
-	       key_algorithm = Alg} = State0, Connection)
-  when Alg == psk ->
-    case ssl_handshake:premaster_secret({Alg, PSKIdentity}, PSKLookup) of
+	#state{static_env = #static_env{role = client},
+               session = #session{master_secret = undefined},
+               connection_env = #connection_env{negotiated_version = Version},
+               handshake_env = #handshake_env{kex_algorithm = KexAlg,
+                                              premaster_secret = undefined,
+                                              server_psk_identity = PSKIdentity} = HsEnv,
+	       ssl_options = #ssl_options{user_lookup_fun = PSKLookup}} = State0, Connection)
+  when KexAlg == psk ->
+    case ssl_handshake:premaster_secret({KexAlg, PSKIdentity}, PSKLookup) of
 	#alert{} = Alert ->
 	    handle_own_alert(Alert, Version, ?FUNCTION_NAME, State0);
 	PremasterSecret ->
 	    State = master_secret(PremasterSecret,
-				  State0#state{premaster_secret = PremasterSecret}),
-	    client_certify_and_key_exchange(State, Connection)
+				  State0#state{handshake_env =
+                                                   HsEnv#handshake_env{premaster_secret = PremasterSecret}}),
+            client_certify_and_key_exchange(State, Connection)
     end;
 certify(internal, #server_hello_done{},
-	#state{session = #session{master_secret = undefined},
-	       ssl_options = #ssl_options{user_lookup_fun = PSKLookup},
-	       negotiated_version = {Major, Minor} = Version,
-	       psk_identity = PSKIdentity,
-	       premaster_secret = undefined,
-	       role = client,
-	       key_algorithm = Alg} = State0, Connection)
-  when Alg == rsa_psk ->
+	#state{static_env = #static_env{role = client},
+               connection_env = #connection_env{negotiated_version = {Major, Minor}} = Version,
+               handshake_env = #handshake_env{kex_algorithm = KexAlg,
+                                              premaster_secret = undefined,
+                                              server_psk_identity = PSKIdentity} = HsEnv,
+               session = #session{master_secret = undefined},
+	       ssl_options = #ssl_options{user_lookup_fun = PSKLookup}} = State0, Connection)
+  when KexAlg == rsa_psk ->
     Rand = ssl_cipher:random_bytes(?NUM_OF_PREMASTERSECRET_BYTES-2),
     RSAPremasterSecret = <<?BYTE(Major), ?BYTE(Minor), Rand/binary>>,
-    case ssl_handshake:premaster_secret({Alg, PSKIdentity}, PSKLookup, 
+    case ssl_handshake:premaster_secret({KexAlg, PSKIdentity}, PSKLookup, 
 					RSAPremasterSecret) of
 	#alert{} = Alert ->
 	    handle_own_alert(Alert, Version, ?FUNCTION_NAME, State0);
 	PremasterSecret ->
 	    State = master_secret(PremasterSecret, 
-				  State0#state{premaster_secret = RSAPremasterSecret}),
+				  State0#state{handshake_env = 
+                                                   HsEnv#handshake_env{premaster_secret = RSAPremasterSecret}}),
 	    client_certify_and_key_exchange(State, Connection)
     end;
 %% Master secret was determined with help of server-key exchange msg
 certify(internal, #server_hello_done{}, 
-	#state{session = #session{master_secret = MasterSecret} = Session,
-	       connection_states = ConnectionStates0,
-	       negotiated_version = Version,
-	       premaster_secret = undefined,
-	       role = client} = State0, Connection) ->
+	#state{static_env = #static_env{role = client},
+               connection_env = #connection_env{negotiated_version = Version},
+               handshake_env = #handshake_env{premaster_secret = undefined},
+               session = #session{master_secret = MasterSecret} = Session,
+	       connection_states = ConnectionStates0} = State0, Connection) ->
     case ssl_handshake:master_secret(ssl:tls_version(Version), Session,
 				     ConnectionStates0, client) of
 	{MasterSecret, ConnectionStates} ->
@@ -911,11 +1092,11 @@ certify(internal, #server_hello_done{},
     end;
 %% Master secret is calculated from premaster_secret
 certify(internal, #server_hello_done{},
-	#state{session = Session0,
-	       connection_states = ConnectionStates0,
-	       negotiated_version = Version,
-	       premaster_secret = PremasterSecret,
-	       role = client} = State0, Connection) ->
+	#state{static_env = #static_env{role = client},
+               connection_env = #connection_env{negotiated_version = Version},
+               handshake_env = #handshake_env{premaster_secret = PremasterSecret},
+               session = Session0,
+	       connection_states = ConnectionStates0} = State0, Connection) ->
     case ssl_handshake:master_secret(ssl:tls_version(Version), PremasterSecret,
 				     ConnectionStates0, client) of
 	{MasterSecret, ConnectionStates} ->
@@ -927,14 +1108,15 @@ certify(internal, #server_hello_done{},
 	    handle_own_alert(Alert, Version, ?FUNCTION_NAME, State0)
     end;
 certify(internal = Type, #client_key_exchange{} = Msg,
-	#state{role = server,
+	#state{static_env = #static_env{role = server},
 	       client_certificate_requested = true,
 	       ssl_options = #ssl_options{fail_if_no_peer_cert = true}} = State, 
 	Connection) ->
     %% We expect a certificate here
     handle_common_event(Type, Msg, ?FUNCTION_NAME, State, Connection);
 certify(internal, #client_key_exchange{exchange_keys = Keys},
-	State = #state{key_algorithm = KeyAlg, negotiated_version = Version}, Connection) ->
+	State = #state{handshake_env = #handshake_env{kex_algorithm = KeyAlg}, 
+                       connection_env = #connection_env{negotiated_version = Version}}, Connection) ->
     try
 	certify_client_key_exchange(ssl_handshake:decode_client_key(Keys, KeyAlg, ssl:tls_version(Version)),
 				    State, Connection)
@@ -957,69 +1139,70 @@ cipher(info, Msg, State, _) ->
     handle_info(Msg, ?FUNCTION_NAME, State);
 cipher(internal, #certificate_verify{signature = Signature, 
 				     hashsign_algorithm = CertHashSign},
-       #state{role = server,
-	      key_algorithm = KexAlg,
-	      public_key_info = PublicKeyInfo,
-	      negotiated_version = Version,
-	      session = #session{master_secret = MasterSecret},
-	      tls_handshake_history = Handshake
+       #state{static_env = #static_env{role = server},
+              handshake_env = #handshake_env{tls_handshake_history = Hist,
+                                             kex_algorithm = KexAlg,
+                                             public_key_info = PubKeyInfo} = HsEnv,
+              connection_env = #connection_env{negotiated_version = Version},
+	      session = #session{master_secret = MasterSecret}
 	     } = State, Connection) ->
     
     TLSVersion = ssl:tls_version(Version),
     %% Use negotiated value if TLS-1.2 otherwhise return default
-    HashSign = negotiated_hashsign(CertHashSign, KexAlg, PublicKeyInfo, TLSVersion),
-    case ssl_handshake:certificate_verify(Signature, PublicKeyInfo,
-					  TLSVersion, HashSign, MasterSecret, Handshake) of
+    HashSign = negotiated_hashsign(CertHashSign, KexAlg, PubKeyInfo, TLSVersion),
+    case ssl_handshake:certificate_verify(Signature, PubKeyInfo,
+					  TLSVersion, HashSign, MasterSecret, Hist) of
 	valid ->
 	    Connection:next_event(?FUNCTION_NAME, no_record,
-				  State#state{cert_hashsign_algorithm = HashSign});
+				  State#state{handshake_env = HsEnv#handshake_env{cert_hashsign_algorithm = HashSign}});
 	#alert{} = Alert ->
 	    handle_own_alert(Alert, Version, ?FUNCTION_NAME, State)
     end;
 %% client must send a next protocol message if we are expecting it
 cipher(internal, #finished{},
-       #state{role = server, expecting_next_protocol_negotiation = true,
-	      negotiated_protocol = undefined, negotiated_version = Version} = State0,
+       #state{static_env = #static_env{role = server},
+              handshake_env = #handshake_env{expecting_next_protocol_negotiation = true,
+                                             negotiated_protocol = undefined},
+              connection_env = #connection_env{negotiated_version = Version}} = State0,
        _Connection) ->
     handle_own_alert(?ALERT_REC(?FATAL,?UNEXPECTED_MESSAGE), Version, ?FUNCTION_NAME, State0);
 cipher(internal, #finished{verify_data = Data} = Finished,
-       #state{negotiated_version = Version,
-	      host = Host,
-	      port = Port,
-	      role = Role,
-	      expecting_finished = true,
+       #state{static_env = #static_env{role = Role,
+                                       host = Host,
+                                       port = Port},
+              handshake_env = #handshake_env{tls_handshake_history = Hist,
+                                             expecting_finished = true} = HsEnv,
+              connection_env = #connection_env{negotiated_version = Version},
 	      session = #session{master_secret = MasterSecret}
 	      = Session0,
               ssl_options = SslOpts,
-	      connection_states = ConnectionStates0,
-	      tls_handshake_history = Handshake0} = State, Connection) ->
+	      connection_states = ConnectionStates0} = State, Connection) ->
     case ssl_handshake:verify_connection(ssl:tls_version(Version), Finished,
 					 opposite_role(Role),
 					 get_current_prf(ConnectionStates0, read),
-					 MasterSecret, Handshake0) of
+					 MasterSecret, Hist) of
         verified ->
-	    Session = register_session(Role, host_id(Role, Host, SslOpts), Port, Session0),
+	    Session = handle_session(Role, SslOpts, Host, Port, Session0),
 	    cipher_role(Role, Data, Session, 
-			State#state{expecting_finished = false}, Connection);
+			State#state{handshake_env = HsEnv#handshake_env{expecting_finished = false}}, Connection);
         #alert{} = Alert ->
 	    handle_own_alert(Alert, Version, ?FUNCTION_NAME, State)
     end;
 %% only allowed to send next_protocol message after change cipher spec
 %% & before finished message and it is not allowed during renegotiation
 cipher(internal, #next_protocol{selected_protocol = SelectedProtocol},
-       #state{role = server, expecting_next_protocol_negotiation = true,
-	      expecting_finished = true} = State, Connection) ->
-    Connection:next_event(?FUNCTION_NAME, no_record, 
-			  State#state{expecting_next_protocol_negotiation = false,
-                                      negotiated_protocol = SelectedProtocol
-                                     });
-cipher(internal, #change_cipher_spec{type = <<1>>},  #state{connection_states = ConnectionStates0} =
+       #state{static_env = #static_env{role = server},
+              handshake_env = #handshake_env{expecting_finished = true,
+                                             expecting_next_protocol_negotiation = true} = HsEnv} = State, Connection) ->
+    Connection:next_event(?FUNCTION_NAME, no_record,
+			  State#state{handshake_env = HsEnv#handshake_env{negotiated_protocol = SelectedProtocol,
+                                                                          expecting_next_protocol_negotiation = false}});
+cipher(internal, #change_cipher_spec{type = <<1>>},  #state{handshake_env = HsEnv, connection_states = ConnectionStates0} =
 	   State, Connection) ->
     ConnectionStates =
 	ssl_record:activate_pending_connection_state(ConnectionStates0, read, Connection),
-    Connection:next_event(?FUNCTION_NAME, no_record, State#state{connection_states = 
-                                                                     ConnectionStates,
-                                                                 expecting_finished = true});
+    Connection:next_event(?FUNCTION_NAME, no_record, State#state{handshake_env = HsEnv#handshake_env{expecting_finished = true},
+                                                                 connection_states = ConnectionStates});
 cipher(Type, Msg, State, Connection) ->
     handle_common_event(Type, Msg, ?FUNCTION_NAME, State, Connection).
 
@@ -1029,15 +1212,17 @@ cipher(Type, Msg, State, Connection) ->
 			gen_statem:state_function_result().
 %%--------------------------------------------------------------------
 connection({call, RecvFrom}, {recv, N, Timeout},  
-	   #state{protocol_cb = Connection,  socket_options =
-		      #socket_options{active = false}} = State0, Connection) ->
-    Timer = start_or_recv_cancel_timer(Timeout, RecvFrom),
+	   #state{static_env = #static_env{protocol_cb = Connection},
+                  socket_options =
+                      #socket_options{active = false}} = State0, Connection) ->
     passive_receive(State0#state{bytes_to_read = N,
-                                 start_or_recv_from = RecvFrom, 
-                                 timer = Timer}, ?FUNCTION_NAME, Connection);
-connection({call, From}, renegotiate, #state{protocol_cb = Connection} = State, 
+                                 start_or_recv_from = RecvFrom}, ?FUNCTION_NAME, Connection,
+                    [{{timeout, recv}, Timeout, timeout}]);
+
+connection({call, From}, renegotiate, #state{static_env = #static_env{protocol_cb = Connection},
+                                             handshake_env = HsEnv} = State,
 	   Connection) ->
-    Connection:renegotiate(State#state{renegotiation = {true, From}}, []);
+    Connection:renegotiate(State#state{handshake_env = HsEnv#handshake_env{renegotiation = {true, From}}}, []);
 connection({call, From}, peer_certificate, 
 	   #state{session = #session{peer_certificate = Cert}} = State, _) ->
     hibernate_after(?FUNCTION_NAME, State, [{reply, From,  {ok, Cert}}]); 
@@ -1048,35 +1233,36 @@ connection({call, From}, {connection_information, false}, State, _) ->
     Info = connection_info(State),
     hibernate_after(?FUNCTION_NAME, State, [{reply, From, {ok, Info}}]);
 connection({call, From}, negotiated_protocol, 
-	   #state{negotiated_protocol = undefined} = State, _) ->
+	   #state{handshake_env = #handshake_env{negotiated_protocol = undefined}} = State, _) ->
     hibernate_after(?FUNCTION_NAME, State, [{reply, From, {error, protocol_not_negotiated}}]);
 connection({call, From}, negotiated_protocol, 
-	   #state{negotiated_protocol = SelectedProtocol} = State, _) ->
+	   #state{handshake_env = #handshake_env{negotiated_protocol = SelectedProtocol}} = State, _) ->
     hibernate_after(?FUNCTION_NAME, State,
 		    [{reply, From, {ok, SelectedProtocol}}]);
 connection({call, From}, Msg, State, Connection) ->
     handle_call(Msg, From, ?FUNCTION_NAME, State, Connection);
-connection(cast, {internal_renegotiate, WriteState}, #state{protocol_cb = Connection,
+connection(cast, {internal_renegotiate, WriteState}, #state{static_env = #static_env{protocol_cb = Connection},
+                                                            handshake_env = HsEnv,
                                                             connection_states = ConnectionStates} 
            = State, Connection) -> 
-    Connection:renegotiate(State#state{renegotiation = {true, internal},
+    Connection:renegotiate(State#state{handshake_env = HsEnv#handshake_env{renegotiation = {true, internal}},
                                        connection_states = ConnectionStates#{current_write => WriteState}}, []);
 connection(cast, {dist_handshake_complete, DHandle},
            #state{ssl_options = #ssl_options{erl_dist = true},
-                  erl_dist_data = ErlDistData,
+                  connection_env = CEnv,
                   socket_options = SockOpts} = State0, Connection) ->
     process_flag(priority, normal),
     State1 =
         State0#state{
-          socket_options =
-              SockOpts#socket_options{active = true},
-          erl_dist_data = ErlDistData#{dist_handle => DHandle}},
-    {Record, State} = dist_app_data(<<>>, State1),
+          socket_options = SockOpts#socket_options{active = true},
+          connection_env = CEnv#connection_env{erl_dist_handle = DHandle},
+          bytes_to_read = undefined},
+    {Record, State} = read_application_data(<<>>, State1),
     Connection:next_event(connection, Record, State);
 connection(info, Msg, State, _) ->
     handle_info(Msg, ?FUNCTION_NAME, State);
-connection(internal, {recv, _}, State, Connection) ->
-    passive_receive(State, ?FUNCTION_NAME, Connection);
+connection(internal, {recv, Timeout}, State, Connection) ->
+    passive_receive(State, ?FUNCTION_NAME, Connection, [{{timeout, recv}, Timeout, timeout}]);
 connection(Type, Msg, State, Connection) ->
     handle_common_event(Type, Msg, ?FUNCTION_NAME, State, Connection).
 
@@ -1085,22 +1271,6 @@ connection(Type, Msg, State, Connection) ->
 		#state{}, tls_connection | dtls_connection) ->
 		       gen_statem:state_function_result().
 %%--------------------------------------------------------------------
-downgrade(internal, #alert{description = ?CLOSE_NOTIFY},
-	  #state{transport_cb = Transport, socket = Socket,
-		 downgrade = {Pid, From}} = State, _) ->
-    tls_socket:setopts(Transport, Socket, [{active, false}, {packet, 0}, {mode, binary}]),
-    Transport:controlling_process(Socket, Pid),
-    gen_statem:reply(From, {ok, Socket}),
-    stop(normal, State);
-downgrade(timeout, downgrade, #state{downgrade = {_, From}} = State, _) ->
-    gen_statem:reply(From, {error, timeout}),
-    stop(normal, State);
-downgrade(
-  info, {CloseTag, Socket},
-  #state{socket = Socket, close_tag = CloseTag, downgrade = {_, From}} =
-      State, _) ->
-    gen_statem:reply(From, {error, CloseTag}),
-    stop(normal, State);
 downgrade(Type, Event, State, Connection) ->
     handle_common_event(Type, Event, ?FUNCTION_NAME, State, Connection).
 
@@ -1109,95 +1279,87 @@ downgrade(Type, Event, State, Connection) ->
 %% common or unexpected events for the state.
 %%--------------------------------------------------------------------
 handle_common_event(internal, {handshake, {#hello_request{} = Handshake, _}}, connection = StateName,  
-		    #state{role = client} = State, _) ->
+		    #state{static_env = #static_env{role = client}, 
+                           handshake_env = HsEnv} = State, _) ->
     %% Should not be included in handshake history
-    {next_state, StateName, State#state{renegotiation = {true, peer}}, [{next_event, internal, Handshake}]};
-handle_common_event(internal, {handshake, {#hello_request{}, _}}, StateName, #state{role = client}, _) 
+    {next_state, StateName, State#state{handshake_env = HsEnv#handshake_env{renegotiation = {true, peer}}},
+     [{next_event, internal, Handshake}]};
+handle_common_event(internal, {handshake, {#hello_request{}, _}}, StateName,
+                    #state{static_env = #static_env{role = client}}, _)
   when StateName =/= connection ->
-    {keep_state_and_data};
+    keep_state_and_data;
 handle_common_event(internal, {handshake, {Handshake, Raw}}, StateName,
-		    #state{tls_handshake_history = Hs0} = State0,
+		    #state{handshake_env = #handshake_env{tls_handshake_history = Hist0}} = State0,
 		    Connection) ->
    
     PossibleSNI = Connection:select_sni_extension(Handshake),
     %% This function handles client SNI hello extension when Handshake is
     %% a client_hello, which needs to be determined by the connection callback.
     %% In other cases this is a noop
-    State = handle_sni_extension(PossibleSNI, State0),
-    HsHist = ssl_handshake:update_handshake_history(Hs0, iolist_to_binary(Raw)),
-    {next_state, StateName, State#state{tls_handshake_history = HsHist}, 
+    State = #state{handshake_env = HsEnv} = handle_sni_extension(PossibleSNI, State0),
+
+    Hist = ssl_handshake:update_handshake_history(Hist0, Raw),
+    {next_state, StateName, State#state{handshake_env = HsEnv#handshake_env{tls_handshake_history = Hist}}, 
      [{next_event, internal, Handshake}]};
 handle_common_event(internal, {protocol_record, TLSorDTLSRecord}, StateName, State, Connection) -> 
-    Connection:handle_common_event(internal, TLSorDTLSRecord, StateName, State);
+    Connection:handle_protocol_record(TLSorDTLSRecord, StateName, State);
 handle_common_event(timeout, hibernate, _, _, _) ->
     {keep_state_and_data, [hibernate]};
-handle_common_event(internal, {application_data, Data}, StateName, State0, Connection) ->
-    case read_application_data(Data, State0) of
-	{stop, _, _} = Stop->
-            Stop;
-	{Record, State1} ->
-            case Connection:next_event(StateName, Record, State1) of
-                {next_state, StateName, State} ->
-                    hibernate_after(StateName, State, []);
-                {next_state, StateName, State, Actions} -> 
-                    hibernate_after(StateName, State, Actions);
-                {stop, _, _} = Stop ->
-                    Stop
-            end 
-    end;
 handle_common_event(internal, #change_cipher_spec{type = <<1>>}, StateName, 
-		    #state{negotiated_version = Version} = State,  _) ->
+		    #state{connection_env = #connection_env{negotiated_version = Version}} = State,  _) ->
     handle_own_alert(?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE), Version, 
 				StateName, State);
-handle_common_event(_Type, Msg, StateName, #state{negotiated_version = Version} = State, 
+handle_common_event({timeout, handshake}, close, _StateName, #state{start_or_recv_from = StartFrom} = State, _) ->
+    {stop_and_reply,
+     {shutdown, user_timeout},
+     {reply, StartFrom, {error, timeout}}, State#state{start_or_recv_from = undefined}};
+handle_common_event({timeout, recv}, timeout, StateName, #state{start_or_recv_from = RecvFrom} = State, _) ->
+    {next_state, StateName, State#state{start_or_recv_from = undefined,
+                                        bytes_to_read = undefined}, [{reply, RecvFrom, {error, timeout}}]};
+handle_common_event(Type, Msg, StateName, #state{connection_env =
+                                                      #connection_env{negotiated_version = Version}} = State, 
 		    _) ->
-    Alert =  ?ALERT_REC(?FATAL,?UNEXPECTED_MESSAGE, {unexpected_msg, Msg}),
+    Alert =  ?ALERT_REC(?FATAL,?UNEXPECTED_MESSAGE, {unexpected_msg, {Type,Msg}}),
     handle_own_alert(Alert, Version, StateName, State).
 
 handle_call({application_data, _Data}, _, _, _, _) ->
     %% In renegotiation priorities handshake, send data when handshake is finished
     {keep_state_and_data, [postpone]};
-handle_call({close, {Pid, Timeout}}, From, StateName, State0, Connection) when is_pid(Pid) ->
-    %% terminate will send close alert to peer
-    State = State0#state{downgrade = {Pid, From}},
-    Connection:terminate(downgrade, StateName, State),
-    %% User downgrades connection
-    %% When downgrading an TLS connection to a transport connection
-    %% we must recive the close alert from the peer before releasing the 
-    %% transport socket.
-    {next_state, downgrade, State#state{terminated = true}, [{timeout, Timeout, downgrade}]};
-handle_call({close, _} = Close, From, StateName, State, _Connection) ->
+handle_call({close, _} = Close, From, StateName, #state{connection_env = CEnv} = State, _Connection) ->
     %% Run terminate before returning so that the reuseaddr
     %% inet-option works properly
     Result = terminate(Close, StateName, State),
-    stop_and_reply(
-      {shutdown, normal},
-      {reply, From, Result}, State#state{terminated = true});
+    {stop_and_reply,
+     {shutdown, normal},
+     {reply, From, Result}, State#state{connection_env = CEnv#connection_env{terminated = true}}};
 handle_call({shutdown, read_write = How}, From, StateName,
-	    #state{transport_cb = Transport,
-		   socket = Socket} = State, _) ->
-
+	    #state{static_env = #static_env{transport_cb = Transport,
+                                            socket = Socket},
+                   connection_env = CEnv} = State, _) ->
     try send_alert(?ALERT_REC(?WARNING, ?CLOSE_NOTIFY),
-                       StateName, State) of
+                   StateName, State) of
         _ -> 
             case Transport:shutdown(Socket, How) of
                 ok ->
-                    {next_state, StateName, State#state{terminated = true}, [{reply, From, ok}]};
+                    {next_state, StateName, State#state{connection_env = 
+                                                            CEnv#connection_env{terminated = true}},
+                     [{reply, From, ok}]};
                 Error ->
-                    {stop, StateName, State#state{terminated = true}, [{reply, From, Error}]}
+                    {stop_and_reply, {shutdown, normal}, {reply, From, Error}, 
+                     State#state{connection_env = CEnv#connection_env{terminated = true}}}
             end
     catch
         throw:Return ->
             Return
     end;
 handle_call({shutdown, How0}, From, StateName,
-	    #state{transport_cb = Transport,
-		   socket = Socket} = State, _) ->
+	    #state{static_env = #static_env{transport_cb = Transport,
+                                            socket = Socket}} = State, _) ->
     case Transport:shutdown(Socket, How0) of
 	ok ->
 	    {next_state, StateName, State, [{reply, From, ok}]};
 	Error ->
-            {stop, StateName, State, [{reply, From, Error}]}
+            {stop_and_reply, {shutdown, normal}, {reply, From, Error}, State}
     end;
 handle_call({recv, _N, _Timeout}, From, _,  
 		  #state{socket_options = 
@@ -1206,40 +1368,47 @@ handle_call({recv, _N, _Timeout}, From, _,
 handle_call({recv, N, Timeout}, RecvFrom, StateName, State, _) ->
     %% Doing renegotiate wait with handling request until renegotiate is
     %% finished. 
-    Timer = start_or_recv_cancel_timer(Timeout, RecvFrom),
-    {next_state, StateName, State#state{bytes_to_read = N, start_or_recv_from = RecvFrom,
-					timer = Timer}, 
-     [{next_event, internal, {recv, RecvFrom}}]};
+    {next_state, StateName, State#state{bytes_to_read = N, start_or_recv_from = RecvFrom}, 
+     [{next_event, internal, {recv, RecvFrom}} , {{timeout, recv}, Timeout, timeout}]};
 handle_call({new_user, User}, From, StateName, 
-		  State =#state{user_application = {OldMon, _}}, _) ->
+            State = #state{connection_env = #connection_env{user_application = {OldMon, _}} = CEnv}, _) ->
     NewMon = erlang:monitor(process, User),
     erlang:demonitor(OldMon, [flush]),
-    {next_state, StateName, State#state{user_application = {NewMon,User}},
+    {next_state, StateName, State#state{connection_env = CEnv#connection_env{user_application = {NewMon, User}}},
      [{reply, From, ok}]};
 handle_call({get_opts, OptTags}, From, _,
-		  #state{socket = Socket,
-			 transport_cb = Transport,
+            #state{static_env = #static_env{socket = Socket,
+                                            transport_cb = Transport},
 			 socket_options = SockOpts}, Connection) ->
     OptsReply = get_socket_opts(Connection, Transport, Socket, OptTags, SockOpts, []),
     {keep_state_and_data, [{reply, From, OptsReply}]};
 handle_call({set_opts, Opts0}, From, StateName, 
-	    #state{socket_options = Opts1, 
-			 socket = Socket,
-			 transport_cb = Transport} = State0, Connection) ->
+	    #state{static_env =  #static_env{socket = Socket,
+                                            transport_cb = Transport,
+                                            tracker = Tracker},
+                   connection_env = 
+                       #connection_env{user_application = {_Mon, Pid}},
+                   socket_options = Opts1
+                  } = State0, Connection) ->
     {Reply, Opts} = set_socket_opts(Connection, Transport, Socket, Opts0, Opts1, []),
+    case {proplists:lookup(active, Opts0), Opts} of
+        {{_, N}, #socket_options{active=false}} when is_integer(N) ->
+            send_user(
+              Pid,
+              format_passive(
+                Connection:pids(State0), Transport, Socket, Tracker, Connection));
+        _ ->
+            ok
+    end,
     State = State0#state{socket_options = Opts},
     handle_active_option(Opts#socket_options.active, StateName, From, Reply, State);
     
 handle_call(renegotiate, From, StateName, _, _) when StateName =/= connection ->
     {keep_state_and_data, [{reply, From, {error, already_renegotiating}}]};
 
-handle_call(get_sslsocket, From, _StateName, State, Connection) ->
-    SslSocket = Connection:socket(State),
-    {keep_state_and_data, [{reply, From, SslSocket}]};
-
 handle_call({prf, Secret, Label, Seed, WantedLength}, From, _,
 	    #state{connection_states = ConnectionStates,
-		   negotiated_version = Version}, _) ->
+		   connection_env = #connection_env{negotiated_version = Version}}, _) ->
     #{security_parameters := SecParams} =
 	ssl_record:current_connection_state(ConnectionStates, read),
     #security_parameters{master_secret = MasterSecret,
@@ -1266,70 +1435,59 @@ handle_call(_,_,_,_,_) ->
     {keep_state_and_data, [postpone]}.
 
 handle_info({ErrorTag, Socket, econnaborted}, StateName,  
-	    #state{socket = Socket, transport_cb = Transport,
-		   protocol_cb = Connection,
-		   start_or_recv_from = StartFrom, role = Role,
-		   error_tag = ErrorTag,
-		   tracker = Tracker} = State)  when StateName =/= connection ->
+	    #state{static_env = #static_env{role = Role,
+                                            socket = Socket,
+                                            transport_cb = Transport,
+                                            error_tag = ErrorTag,
+                                            tracker = Tracker,
+                                            protocol_cb = Connection},
+		   start_or_recv_from = StartFrom
+		  } = State)  when StateName =/= connection ->
     Pids = Connection:pids(State),
     alert_user(Pids, Transport, Tracker,Socket, 
 	       StartFrom, ?ALERT_REC(?FATAL, ?CLOSE_NOTIFY), Role, Connection),
-    stop(normal, State);
+    {stop, {shutdown, normal}, State};
 
-handle_info({ErrorTag, Socket, Reason}, StateName, #state{socket = Socket,
-							  error_tag = ErrorTag} = State)  ->
+handle_info({ErrorTag, Socket, Reason}, StateName, #state{static_env = #static_env{socket = Socket,
+                                                                                   error_tag = ErrorTag}} = State)  ->
     Report = io_lib:format("SSL: Socket error: ~p ~n", [Reason]),
-    error_logger:error_report(Report),
+    ?LOG_ERROR(Report),
     handle_normal_shutdown(?ALERT_REC(?FATAL, ?CLOSE_NOTIFY), StateName, State),
-    stop(normal, State);
+    {stop, {shutdown,normal}, State};
 
 handle_info({'DOWN', MonitorRef, _, _, Reason}, _,
-            #state{user_application = {MonitorRef, _Pid},
+            #state{connection_env = #connection_env{user_application = {MonitorRef, _Pid}},
                    ssl_options = #ssl_options{erl_dist = true}}) ->
     {stop, {shutdown, Reason}};
 handle_info({'DOWN', MonitorRef, _, _, _}, _,
-            #state{user_application = {MonitorRef, _Pid}}) ->
-    {stop, normal};
+            #state{connection_env = #connection_env{user_application = {MonitorRef, _Pid}}}) ->
+    {stop, {shutdown, normal}};
 handle_info({'EXIT', Pid, _Reason}, StateName,
-            #state{user_application = {_MonitorRef, Pid}} = State) ->
+            #state{connection_env = #connection_env{user_application = {_MonitorRef, Pid}}} = State) ->
     %% It seems the user application has linked to us
     %% - ignore that and let the monitor handle this
     {next_state, StateName, State};
 %%% So that terminate will be run when supervisor issues shutdown
 handle_info({'EXIT', _Sup, shutdown}, _StateName, State) ->
-    stop(shutdown, State);
-handle_info({'EXIT', Socket, normal}, _StateName, #state{socket = Socket} = State) ->
+    {stop, shutdown, State};
+handle_info({'EXIT', Socket, normal}, _StateName, #state{static_env = #static_env{socket = Socket}} = State) ->
     %% Handle as transport close"
-    stop({shutdown, transport_closed}, State);
-handle_info({'EXIT', Socket, Reason}, _StateName, #state{socket = Socket} = State) ->
-    stop({shutdown, Reason}, State);
-
-handle_info(allow_renegotiate, StateName, State) ->
-    {next_state, StateName, State#state{allow_renegotiate = true}};
-
-handle_info({cancel_start_or_recv, StartFrom}, StateName,
-	    #state{renegotiation = {false, first}} = State) when StateName =/= connection ->
-    stop_and_reply(
-      {shutdown, user_timeout},
-      {reply, StartFrom, {error, timeout}},
-      State#state{timer = undefined});
-handle_info({cancel_start_or_recv, RecvFrom}, StateName, 
-	    #state{start_or_recv_from = RecvFrom} = State) when RecvFrom =/= undefined ->
-    {next_state, StateName, State#state{start_or_recv_from = undefined,
-					bytes_to_read = undefined,
-					timer = undefined}, [{reply, RecvFrom, {error, timeout}}]};
-handle_info({cancel_start_or_recv, _RecvFrom}, StateName, State) ->
-    {next_state, StateName, State#state{timer = undefined}};
+    {stop,{shutdown, transport_closed}, State};
+handle_info({'EXIT', Socket, Reason}, _StateName, #state{static_env = #static_env{socket = Socket}} = State) ->
+    {stop,{shutdown, Reason}, State};
 
-handle_info(Msg, StateName, #state{socket = Socket, error_tag = Tag} = State) ->
+handle_info(allow_renegotiate, StateName, #state{handshake_env = HsEnv} = State) ->
+    {next_state, StateName, State#state{handshake_env = HsEnv#handshake_env{allow_renegotiate = true}}};
+
+handle_info(Msg, StateName, #state{static_env = #static_env{socket = Socket, error_tag = Tag}} = State) ->
     Report = io_lib:format("SSL: Got unexpected info: ~p ~n", [{Msg, Tag, Socket}]),
-    error_logger:info_report(Report),
+    ?LOG_NOTICE(Report),
     {next_state, StateName, State}.
 
 %%====================================================================
 %% general gen_statem callbacks
 %%====================================================================
-terminate(_, _, #state{terminated = true}) ->
+terminate(_, _, #state{connection_env = #connection_env{terminated = true}}) ->
     %% Happens when user closes the connection using ssl:close/1
     %% we want to guarantee that Transport:close has been called
     %% when ssl:close/1 returns unless it is a downgrade where
@@ -1338,14 +1496,15 @@ terminate(_, _, #state{terminated = true}) ->
     %% before run by gen_statem which will end up here
     ok;
 terminate({shutdown, transport_closed} = Reason, 
-	  _StateName, #state{protocol_cb = Connection,
-			     socket = Socket, transport_cb = Transport} = State) ->
+	  _StateName, #state{static_env = #static_env{protocol_cb = Connection,
+                                                      socket = Socket,
+                                                      transport_cb = Transport}} = State) ->
     handle_trusted_certs_db(State),
     Connection:close(Reason, Socket, Transport, undefined, undefined);
 terminate({shutdown, own_alert}, _StateName, #state{
-						protocol_cb = Connection,
-						socket = Socket, 
-						transport_cb = Transport} = State) ->
+						static_env = #static_env{protocol_cb = Connection,
+                                                                         socket = Socket,
+                                                                         transport_cb = Transport}} = State) ->
     handle_trusted_certs_db(State),
     case application:get_env(ssl, alert_timeout) of
 	{ok, Timeout} when is_integer(Timeout) ->
@@ -1353,23 +1512,27 @@ terminate({shutdown, own_alert}, _StateName, #state{
 	_ ->
 	    Connection:close({timeout, ?DEFAULT_TIMEOUT}, Socket, Transport, undefined, undefined)
     end;
-terminate(downgrade = Reason, connection, #state{protocol_cb = Connection,
-                                        transport_cb = Transport, socket = Socket
-                                       } = State) ->
+terminate({shutdown, downgrade = Reason}, downgrade, #state{static_env = #static_env{protocol_cb = Connection,
+                                                                                     transport_cb = Transport,
+                                                                                     socket = Socket}
+                                                           } = State) ->
     handle_trusted_certs_db(State),
     Connection:close(Reason, Socket, Transport, undefined, undefined);
-terminate(Reason, connection, #state{protocol_cb = Connection,
+terminate(Reason, connection, #state{static_env = #static_env{
+                                                     protocol_cb = Connection,
+                                                     transport_cb = Transport,
+                                                     socket = Socket},
                                      connection_states = ConnectionStates,
-                                     ssl_options = #ssl_options{padding_check = Check},
-                                     transport_cb = Transport, socket = Socket
+                                     ssl_options = #ssl_options{padding_check = Check}
                                     } = State) ->
     handle_trusted_certs_db(State),
     Alert = terminate_alert(Reason),
     %% Send the termination ALERT if possible
-    catch (Connection:send_alert_in_connection(Alert, State)),
+    catch (ok = Connection:send_alert_in_connection(Alert, State)),
     Connection:close({timeout, ?DEFAULT_TIMEOUT}, Socket, Transport, ConnectionStates, Check);
-terminate(Reason, _StateName, #state{transport_cb = Transport, protocol_cb = Connection,
-				     socket = Socket 
+terminate(Reason, _StateName, #state{static_env = #static_env{transport_cb = Transport,
+                                                              protocol_cb = Connection,
+                                                              socket = Socket}
 				    } = State) ->
     handle_trusted_certs_db(State),
     Connection:close(Reason, Socket, Transport, undefined, undefined).
@@ -1388,14 +1551,9 @@ format_status(terminate, [_, StateName, State]) ->
     [{data, [{"State", {StateName, State#state{connection_states = ?SECRET_PRINTOUT,
 					       protocol_buffers =  ?SECRET_PRINTOUT,
 					       user_data_buffer = ?SECRET_PRINTOUT,
-					       tls_handshake_history =  ?SECRET_PRINTOUT,
+					       handshake_env =  ?SECRET_PRINTOUT,
+                                               connection_env = ?SECRET_PRINTOUT,
 					       session =  ?SECRET_PRINTOUT,
-					       private_key =  ?SECRET_PRINTOUT,
-					       diffie_hellman_params = ?SECRET_PRINTOUT,
-					       diffie_hellman_keys =  ?SECRET_PRINTOUT,
-					       srp_params = ?SECRET_PRINTOUT,
-					       srp_keys =  ?SECRET_PRINTOUT,
-					       premaster_secret =  ?SECRET_PRINTOUT,
 					       ssl_options = NewOptions,
 					       flight_buffer =  ?SECRET_PRINTOUT}
 		       }}]}].
@@ -1403,16 +1561,16 @@ format_status(terminate, [_, StateName, State]) ->
 %%--------------------------------------------------------------------
 %%% Internal functions
 %%--------------------------------------------------------------------
-send_alert(Alert, connection, #state{protocol_cb = Connection} = State) ->
+send_alert(Alert, connection, #state{static_env = #static_env{protocol_cb = Connection}} = State) ->
      Connection:send_alert_in_connection(Alert, State);
-send_alert(Alert, _, #state{protocol_cb = Connection} = State) ->
+send_alert(Alert, _, #state{static_env = #static_env{protocol_cb = Connection}} = State) ->
     Connection:send_alert(Alert, State).
 
-connection_info(#state{sni_hostname = SNIHostname, 
-		       session = #session{session_id = SessionId,
+connection_info(#state{static_env = #static_env{protocol_cb = Connection},
+                       handshake_env = #handshake_env{sni_hostname = SNIHostname},
+                       session = #session{session_id = SessionId,
                                           cipher_suite = CipherSuite, ecc = ECCCurve},
-		       protocol_cb = Connection,
-		       negotiated_version =  {_,_} = Version, 
+		       connection_env = #connection_env{negotiated_version =  {_,_} = Version}, 
 		       ssl_options = Opts}) ->
     RecordCB = record_cb(Connection),
     CipherSuiteDef = #{key_exchange := KexAlg} = ssl_cipher_format:suite_definition(CipherSuite),
@@ -1438,18 +1596,24 @@ security_info(#state{connection_states = ConnectionStates}) ->
 	ssl_record:current_connection_state(ConnectionStates, read),
     [{client_random, ClientRand}, {server_random, ServerRand}, {master_secret, MasterSecret}].
 
-do_server_hello(Type, #hello_extensions{next_protocol_negotiation = NextProtocols} =
+do_server_hello(Type, #{next_protocol_negotiation := NextProtocols} =
 		    ServerHelloExt,
-		#state{negotiated_version = Version,
+		#state{connection_env = #connection_env{negotiated_version = Version},
+                       handshake_env = HsEnv,
 		       session = #session{session_id = SessId},
-		       connection_states = ConnectionStates0}
+		       connection_states = ConnectionStates0,
+                       ssl_options = #ssl_options{versions = [HighestVersion|_]}}
 		= State0, Connection) when is_atom(Type) ->
-
+    %% TLS 1.3 - Section 4.1.3
+    %% Override server random values for TLS 1.3 downgrade protection mechanism.
+    ConnectionStates1 = update_server_random(ConnectionStates0, Version, HighestVersion),
+    State1 = State0#state{connection_states = ConnectionStates1},
     ServerHello =
-	ssl_handshake:server_hello(SessId, ssl:tls_version(Version), ConnectionStates0, ServerHelloExt),
+	ssl_handshake:server_hello(SessId, ssl:tls_version(Version),
+                                   ConnectionStates1, ServerHelloExt),
     State = server_hello(ServerHello,
-			 State0#state{expecting_next_protocol_negotiation =
-					  NextProtocols =/= undefined}, Connection),
+			 State1#state{handshake_env = HsEnv#handshake_env{expecting_next_protocol_negotiation =
+                                                                              NextProtocols =/= undefined}}, Connection),
     case Type of
 	new ->
 	    new_server_hello(ServerHello, State, Connection);
@@ -1457,11 +1621,65 @@ do_server_hello(Type, #hello_extensions{next_protocol_negotiation = NextProtocol
 	    resumed_server_hello(State, Connection)
     end.
 
+update_server_random(#{pending_read := #{security_parameters := ReadSecParams0} =
+                           ReadState0,
+                       pending_write := #{security_parameters := WriteSecParams0} =
+                           WriteState0} = ConnectionStates,
+                     Version, HighestVersion) ->
+    ReadRandom = override_server_random(
+                   ReadSecParams0#security_parameters.server_random,
+                   Version,
+                   HighestVersion),
+    WriteRandom = override_server_random(
+                    WriteSecParams0#security_parameters.server_random,
+                    Version,
+                    HighestVersion),
+    ReadSecParams = ReadSecParams0#security_parameters{server_random = ReadRandom},
+    WriteSecParams = WriteSecParams0#security_parameters{server_random = WriteRandom},
+    ReadState = ReadState0#{security_parameters => ReadSecParams},
+    WriteState = WriteState0#{security_parameters => WriteSecParams},
+
+    ConnectionStates#{pending_read => ReadState, pending_write => WriteState}.
+
+%% TLS 1.3 - Section 4.1.3
+%%
+%% If negotiating TLS 1.2, TLS 1.3 servers MUST set the last eight bytes
+%% of their Random value to the bytes:
+%%
+%%   44 4F 57 4E 47 52 44 01
+%%
+%% If negotiating TLS 1.1 or below, TLS 1.3 servers MUST and TLS 1.2
+%% servers SHOULD set the last eight bytes of their Random value to the
+%% bytes:
+%%
+%%   44 4F 57 4E 47 52 44 00
+override_server_random(<<Random0:24/binary,_:8/binary>> = Random, {M,N}, {Major,Minor})
+  when Major > 3 orelse Major =:= 3 andalso Minor >= 4 -> %% TLS 1.3 or above
+    if M =:= 3 andalso N =:= 3 ->                         %% Negotating TLS 1.2
+            Down = ?RANDOM_OVERRIDE_TLS12,
+            <<Random0/binary,Down/binary>>;
+       M =:= 3 andalso N < 3 ->                           %% Negotating TLS 1.1 or prior
+            Down = ?RANDOM_OVERRIDE_TLS11,
+            <<Random0/binary,Down/binary>>;
+       true ->
+            Random
+    end;
+override_server_random(<<Random0:24/binary,_:8/binary>> = Random, {M,N}, {Major,Minor})
+  when Major =:= 3 andalso Minor =:= 3 ->   %% TLS 1.2
+    if M =:= 3 andalso N < 3 ->             %% Negotating TLS 1.1 or prior
+            Down = ?RANDOM_OVERRIDE_TLS11,
+            <<Random0/binary,Down/binary>>;
+       true ->
+            Random
+    end;
+override_server_random(Random, _, _) ->
+    Random.
+
 new_server_hello(#server_hello{cipher_suite = CipherSuite,
 			      compression_method = Compression,
 			      session_id = SessionId},
-		#state{session = Session0,
-		       negotiated_version = Version} = State0, Connection) ->
+                 #state{session = Session0,
+                        connection_env = #connection_env{negotiated_version = Version}} = State0, Connection) ->
     try server_certify_and_key_exchange(State0, Connection) of
         #state{} = State1 ->
             {State, Actions} = server_hello_done(State1, Connection),
@@ -1477,7 +1695,7 @@ new_server_hello(#server_hello{cipher_suite = CipherSuite,
 
 resumed_server_hello(#state{session = Session,
 			    connection_states = ConnectionStates0,
-			    negotiated_version = Version} = State0, Connection) ->
+			    connection_env = #connection_env{negotiated_version = Version}} = State0, Connection) ->
 
     case ssl_handshake:master_secret(ssl:tls_version(Version), Session,
 				     ConnectionStates0, server) of
@@ -1494,19 +1712,20 @@ resumed_server_hello(#state{session = Session,
 server_hello(ServerHello, State0, Connection) ->
     CipherSuite = ServerHello#server_hello.cipher_suite,
     #{key_exchange := KeyAlgorithm}  = ssl_cipher_format:suite_definition(CipherSuite),
-    State = Connection:queue_handshake(ServerHello, State0),
-    State#state{key_algorithm = KeyAlgorithm}.
+    #state{handshake_env = HsEnv} = State = Connection:queue_handshake(ServerHello, State0),
+    State#state{handshake_env = HsEnv#handshake_env{kex_algorithm = KeyAlgorithm}}.
 
 server_hello_done(State, Connection) ->
     HelloDone = ssl_handshake:server_hello_done(),
     Connection:send_handshake(HelloDone, State).
 
 handle_peer_cert(Role, PeerCert, PublicKeyInfo,
-		 #state{session = #session{cipher_suite = CipherSuite} = Session} = State0,
+		 #state{handshake_env = HsEnv,
+                    session = #session{cipher_suite = CipherSuite} = Session} = State0,
 		 Connection) ->
-    State1 = State0#state{session =
-			 Session#session{peer_certificate = PeerCert},
-			 public_key_info = PublicKeyInfo},
+    State1 = State0#state{handshake_env = HsEnv#handshake_env{public_key_info = PublicKeyInfo},
+                          session =
+                              Session#session{peer_certificate = PeerCert}},
     #{key_exchange := KeyAlgorithm} = ssl_cipher_format:suite_definition(CipherSuite),
     State = handle_peer_cert_key(Role, PeerCert, PublicKeyInfo, KeyAlgorithm, State1),
     Connection:next_event(certify, no_record, State).
@@ -1514,27 +1733,20 @@ handle_peer_cert(Role, PeerCert, PublicKeyInfo,
 handle_peer_cert_key(client, _,
 		     {?'id-ecPublicKey',  #'ECPoint'{point = _ECPoint} = PublicKey,
 		      PublicKeyParams},
-		     KeyAlg, #state{session = Session} = State)  when KeyAlg == ecdh_rsa;
+		     KeyAlg, #state{handshake_env = HsEnv,
+                                    session = Session} = State)  when KeyAlg == ecdh_rsa;
                                                                       KeyAlg == ecdh_ecdsa ->
     ECDHKey = public_key:generate_key(PublicKeyParams),
     PremasterSecret = ssl_handshake:premaster_secret(PublicKey, ECDHKey),
-    master_secret(PremasterSecret, State#state{diffie_hellman_keys = ECDHKey,
+    master_secret(PremasterSecret, State#state{handshake_env = HsEnv#handshake_env{kex_keys = ECDHKey},
                                                session = Session#session{ecc = PublicKeyParams}});
-%% We do currently not support cipher suites that use fixed DH.
-%% If we want to implement that the following clause can be used
-%% to extract DH parameters form cert.
-%% handle_peer_cert_key(client, _PeerCert, {?dhpublicnumber, PublicKey, PublicKeyParams},
-%%                      {_,SignAlg},
-%% 		        #state{diffie_hellman_keys = {_, MyPrivatKey}} = State) when
-%%                                                                           SignAlg == dh_rsa;
-%% 									     SignAlg == dh_dss ->
-%%     dh_master_secret(PublicKeyParams, PublicKey, MyPrivatKey, State);
 handle_peer_cert_key(_, _, _, _, State) ->
     State.
 
-certify_client(#state{client_certificate_requested = true, role = client,
-		      cert_db = CertDbHandle,
-                      cert_db_ref = CertDbRef,
+certify_client(#state{static_env = #static_env{role = client,
+                                               cert_db = CertDbHandle,
+                                               cert_db_ref = CertDbRef},
+                      client_certificate_requested = true,
 		      session = #session{own_certificate = OwnCert}}
 	       = State, Connection) ->
     Certificate = ssl_handshake:certificate(OwnCert, CertDbHandle, CertDbRef, client),
@@ -1542,16 +1754,17 @@ certify_client(#state{client_certificate_requested = true, role = client,
 certify_client(#state{client_certificate_requested = false} = State, _) ->
     State.
 
-verify_client_cert(#state{client_certificate_requested = true, role = client,
-			  negotiated_version = Version,
-			  private_key = PrivateKey,
+verify_client_cert(#state{static_env = #static_env{role = client},
+                          handshake_env = #handshake_env{tls_handshake_history = Hist,
+                                                         cert_hashsign_algorithm = HashSign},
+                          connection_env = #connection_env{negotiated_version = Version,
+                                                           private_key = PrivateKey},
+                          client_certificate_requested = true,
 			  session = #session{master_secret = MasterSecret,
-					     own_certificate = OwnCert},
-			  cert_hashsign_algorithm = HashSign,
-			  tls_handshake_history = Handshake0} = State, Connection) ->
+					     own_certificate = OwnCert}} = State, Connection) ->
 
     case ssl_handshake:client_certificate_verify(OwnCert, MasterSecret,
-						 ssl:tls_version(Version), HashSign, PrivateKey, Handshake0) of
+						 ssl:tls_version(Version), HashSign, PrivateKey, Hist) of
         #certificate_verify{} = Verified ->
            Connection:queue_handshake(Verified, State);
 	ignore ->
@@ -1562,7 +1775,7 @@ verify_client_cert(#state{client_certificate_requested = true, role = client,
 verify_client_cert(#state{client_certificate_requested = false} = State, _) ->
     State.
 
-client_certify_and_key_exchange(#state{negotiated_version = Version} =
+client_certify_and_key_exchange(#state{connection_env = #connection_env{negotiated_version = Version}} =
 				State0, Connection) ->
     try do_client_certify_and_key_exchange(State0, Connection) of
         State1 = #state{} ->
@@ -1587,7 +1800,9 @@ server_certify_and_key_exchange(State0, Connection) ->
     request_client_cert(State2, Connection).
 
 certify_client_key_exchange(#encrypted_premaster_secret{premaster_secret= EncPMS},
-			    #state{private_key = Key, client_hello_version = {Major, Minor} = Version} = State, Connection) ->
+			    #state{connection_env = #connection_env{private_key = Key}, 
+                                   handshake_env = #handshake_env{client_hello_version = {Major, Minor} = Version}}
+                            = State, Connection) ->
     FakeSecret = make_premaster_secret(Version, rsa),
     %% Countermeasure for Bleichenbacher attack always provide some kind of premaster secret
     %% and fail handshake later.RFC 5246 section 7.4.7.1.
@@ -1608,14 +1823,15 @@ certify_client_key_exchange(#encrypted_premaster_secret{premaster_secret= EncPMS
         end,    
     calculate_master_secret(PremasterSecret, State, Connection, certify, cipher);
 certify_client_key_exchange(#client_diffie_hellman_public{dh_public = ClientPublicDhKey},
-			    #state{diffie_hellman_params = #'DHParameter'{} = Params,
-				   diffie_hellman_keys = {_, ServerDhPrivateKey}} = State,
+			    #state{handshake_env = #handshake_env{diffie_hellman_params = #'DHParameter'{} = Params,
+                                                                  kex_keys = {_, ServerDhPrivateKey}}
+				  } = State,
 			    Connection) ->
     PremasterSecret = ssl_handshake:premaster_secret(ClientPublicDhKey, ServerDhPrivateKey, Params),
     calculate_master_secret(PremasterSecret, State, Connection, certify, cipher);
 
 certify_client_key_exchange(#client_ec_diffie_hellman_public{dh_public = ClientPublicEcDhPoint},
-			    #state{diffie_hellman_keys = ECDHKey} = State, Connection) ->
+			    #state{handshake_env = #handshake_env{kex_keys = ECDHKey}} = State, Connection) ->
     PremasterSecret = ssl_handshake:premaster_secret(#'ECPoint'{point = ClientPublicEcDhPoint}, ECDHKey),
     calculate_master_secret(PremasterSecret, State, Connection, certify, cipher);
 certify_client_key_exchange(#client_psk_identity{} = ClientKey,
@@ -1625,8 +1841,8 @@ certify_client_key_exchange(#client_psk_identity{} = ClientKey,
     PremasterSecret = ssl_handshake:premaster_secret(ClientKey, PSKLookup),
     calculate_master_secret(PremasterSecret, State0, Connection, certify, cipher);
 certify_client_key_exchange(#client_dhe_psk_identity{} = ClientKey,
-			    #state{diffie_hellman_params = #'DHParameter'{} = Params,
-				   diffie_hellman_keys = {_, ServerDhPrivateKey},
+			    #state{handshake_env = #handshake_env{diffie_hellman_params = #'DHParameter'{} = Params,
+                                                                  kex_keys = {_, ServerDhPrivateKey}},
 				   ssl_options = 
 				       #ssl_options{user_lookup_fun = PSKLookup}} = State0,
 			    Connection) ->
@@ -1634,7 +1850,7 @@ certify_client_key_exchange(#client_dhe_psk_identity{} = ClientKey,
 	ssl_handshake:premaster_secret(ClientKey, ServerDhPrivateKey, Params, PSKLookup),
     calculate_master_secret(PremasterSecret, State0, Connection, certify, cipher);
 certify_client_key_exchange(#client_ecdhe_psk_identity{} = ClientKey,
-			    #state{diffie_hellman_keys = ServerEcDhPrivateKey,
+			    #state{handshake_env = #handshake_env{kex_keys = ServerEcDhPrivateKey},
 				   ssl_options =
 				       #ssl_options{user_lookup_fun = PSKLookup}} = State,
 			    Connection) ->
@@ -1642,28 +1858,29 @@ certify_client_key_exchange(#client_ecdhe_psk_identity{} = ClientKey,
 	ssl_handshake:premaster_secret(ClientKey, ServerEcDhPrivateKey, PSKLookup),
     calculate_master_secret(PremasterSecret, State, Connection, certify, cipher);
 certify_client_key_exchange(#client_rsa_psk_identity{} = ClientKey,
-			    #state{private_key = Key,
+			    #state{connection_env = #connection_env{private_key = Key},
 				   ssl_options = 
 				       #ssl_options{user_lookup_fun = PSKLookup}} = State0,
 			    Connection) ->
     PremasterSecret = ssl_handshake:premaster_secret(ClientKey, Key, PSKLookup),
     calculate_master_secret(PremasterSecret, State0, Connection, certify, cipher);
 certify_client_key_exchange(#client_srp_public{} = ClientKey,
-			    #state{srp_params = Params,
-				   srp_keys = Key
+			    #state{handshake_env = #handshake_env{srp_params = Params,
+                                                                  kex_keys = Key}
 				  } = State0, Connection) ->
     PremasterSecret = ssl_handshake:premaster_secret(ClientKey, Key, Params),
     calculate_master_secret(PremasterSecret, State0, Connection, certify, cipher).
 
-certify_server(#state{key_algorithm = Algo} = State, _) when Algo == dh_anon; 
-							     Algo == ecdh_anon; 
-							     Algo == psk; 
-							     Algo == dhe_psk; 
-							     Algo == ecdhe_psk; 
-							     Algo == srp_anon  ->
+certify_server(#state{handshake_env = #handshake_env{kex_algorithm = KexAlg}} = 
+                   State, _) when KexAlg == dh_anon; 
+                                  KexAlg == ecdh_anon; 
+                                  KexAlg == psk; 
+                                  KexAlg == dhe_psk; 
+                                  KexAlg == ecdhe_psk; 
+                                  KexAlg == srp_anon  ->
     State;
-certify_server(#state{cert_db = CertDbHandle,
-		      cert_db_ref = CertDbRef,
+certify_server(#state{static_env = #static_env{cert_db = CertDbHandle,
+                                               cert_db_ref = CertDbRef},
 		      session = #session{own_certificate = OwnCert}} = State, Connection) ->
     case ssl_handshake:certificate(OwnCert, CertDbHandle, CertDbRef, server) of
 	Cert = #certificate{} ->
@@ -1672,18 +1889,19 @@ certify_server(#state{cert_db = CertDbHandle,
 	    throw(Alert)
     end.
 
-key_exchange(#state{role = server, key_algorithm = rsa} = State,_) ->
+key_exchange(#state{static_env = #static_env{role = server}, 
+                    handshake_env = #handshake_env{kex_algorithm = rsa}} = State,_) ->
     State;
-key_exchange(#state{role = server, key_algorithm = Algo,
-		    hashsign_algorithm = HashSignAlgo,
-		    diffie_hellman_params = #'DHParameter'{} = Params,
-		    private_key = PrivateKey,
-		    connection_states = ConnectionStates0,
-		    negotiated_version = Version
-		   } = State0, Connection)
-  when Algo == dhe_dss;
-       Algo == dhe_rsa;
-       Algo == dh_anon ->
+key_exchange(#state{static_env = #static_env{role = server}, 
+		    handshake_env = #handshake_env{kex_algorithm = KexAlg,
+                                                   diffie_hellman_params = #'DHParameter'{} = Params,
+                                                   hashsign_algorithm = HashSignAlgo},
+                    connection_env = #connection_env{negotiated_version = Version,
+                                                     private_key = PrivateKey},
+		    connection_states = ConnectionStates0} = State0, Connection)
+  when KexAlg == dhe_dss;
+       KexAlg == dhe_rsa;
+       KexAlg == dh_anon ->
     DHKeys = public_key:generate_key(Params),
     #{security_parameters := SecParams} =
 	ssl_record:pending_connection_state(ConnectionStates0, read),
@@ -1693,22 +1911,26 @@ key_exchange(#state{role = server, key_algorithm = Algo,
 					       HashSignAlgo, ClientRandom,
 					       ServerRandom,
 					       PrivateKey}),
-    State = Connection:queue_handshake(Msg, State0),
-    State#state{diffie_hellman_keys = DHKeys};
-key_exchange(#state{role = server, private_key = #'ECPrivateKey'{parameters = ECCurve} = Key, key_algorithm = Algo,
+    #state{handshake_env = HsEnv} = State = Connection:queue_handshake(Msg, State0),
+    State#state{handshake_env = HsEnv#handshake_env{kex_keys = DHKeys}};
+key_exchange(#state{static_env = #static_env{role = server},
+                    handshake_env = #handshake_env{kex_algorithm = KexAlg} = HsEnv,
+                    connection_env = #connection_env{private_key = #'ECPrivateKey'{parameters = ECCurve} = Key},
                    session = Session} = State, _)
-  when Algo == ecdh_ecdsa; Algo == ecdh_rsa ->
-    State#state{diffie_hellman_keys = Key,
+  when KexAlg == ecdh_ecdsa; 
+       KexAlg == ecdh_rsa ->
+    State#state{handshake_env = HsEnv#handshake_env{kex_keys = Key},
                 session = Session#session{ecc = ECCurve}};
-key_exchange(#state{role = server, key_algorithm = Algo,
-		    hashsign_algorithm = HashSignAlgo,
-		    private_key = PrivateKey,
+key_exchange(#state{static_env = #static_env{role = server}, 
+                    handshake_env = #handshake_env{kex_algorithm = KexAlg,
+                                                   hashsign_algorithm = HashSignAlgo},
+                    connection_env = #connection_env{negotiated_version = Version,
+                                                     private_key = PrivateKey},
 		    session = #session{ecc = ECCCurve},
-		    connection_states = ConnectionStates0,
-		    negotiated_version = Version
-		   } = State0, Connection)
-  when Algo == ecdhe_ecdsa; Algo == ecdhe_rsa;
-       Algo == ecdh_anon ->
+		    connection_states = ConnectionStates0} = State0, Connection)
+  when KexAlg == ecdhe_ecdsa; 
+       KexAlg == ecdhe_rsa;
+       KexAlg == ecdh_anon ->
 
     ECDHKeys = public_key:generate_key(ECCCurve),
     #{security_parameters := SecParams} = 
@@ -1720,18 +1942,19 @@ key_exchange(#state{role = server, key_algorithm = Algo,
 				       HashSignAlgo, ClientRandom,
 				       ServerRandom,
 				       PrivateKey}),
-    State = Connection:queue_handshake(Msg, State0),
-    State#state{diffie_hellman_keys = ECDHKeys};
-key_exchange(#state{role = server, key_algorithm = psk,
+    #state{handshake_env = HsEnv} = State = Connection:queue_handshake(Msg, State0),
+    State#state{handshake_env = HsEnv#handshake_env{kex_keys = ECDHKeys}};
+key_exchange(#state{static_env = #static_env{role = server}, 
+                    handshake_env = #handshake_env{kex_algorithm = psk},
 		    ssl_options = #ssl_options{psk_identity = undefined}} = State, _) ->
     State;
-key_exchange(#state{role = server, key_algorithm = psk,
+key_exchange(#state{static_env = #static_env{role = server}, 
 		    ssl_options = #ssl_options{psk_identity = PskIdentityHint},
-		    hashsign_algorithm = HashSignAlgo,
-		    private_key = PrivateKey,
-		    connection_states = ConnectionStates0,
-		    negotiated_version = Version
-		   } = State0, Connection) ->
+		    handshake_env = #handshake_env{kex_algorithm = psk,
+                                                   hashsign_algorithm = HashSignAlgo},     
+                    connection_env = #connection_env{negotiated_version = Version,
+                                                     private_key = PrivateKey},
+             connection_states = ConnectionStates0} = State0, Connection) ->
     #{security_parameters := SecParams} = 
 	ssl_record:pending_connection_state(ConnectionStates0, read),
     #security_parameters{client_random = ClientRandom,
@@ -1740,15 +1963,16 @@ key_exchange(#state{role = server, key_algorithm = psk,
 				     {psk, PskIdentityHint,
 				      HashSignAlgo, ClientRandom,
 				      ServerRandom,
-						       PrivateKey}),
+                                      PrivateKey}),
     Connection:queue_handshake(Msg, State0);
-key_exchange(#state{role = server, key_algorithm = dhe_psk,
+key_exchange(#state{static_env = #static_env{role = server},                    
 		    ssl_options = #ssl_options{psk_identity = PskIdentityHint},
-		    hashsign_algorithm = HashSignAlgo,
-		    diffie_hellman_params = #'DHParameter'{} = Params,
-		    private_key = PrivateKey,
-		    connection_states = ConnectionStates0,
-		    negotiated_version = Version
+		    handshake_env = #handshake_env{kex_algorithm = dhe_psk,
+                                                   diffie_hellman_params = #'DHParameter'{} = Params,
+                                                   hashsign_algorithm = HashSignAlgo},                                        
+                    connection_env = #connection_env{negotiated_version = Version,
+                                                     private_key = PrivateKey},
+		    connection_states = ConnectionStates0
 		   } = State0, Connection) ->
     DHKeys = public_key:generate_key(Params),
     #{security_parameters := SecParams} =
@@ -1761,15 +1985,16 @@ key_exchange(#state{role = server, key_algorithm = dhe_psk,
 				       HashSignAlgo, ClientRandom,
 				       ServerRandom,
 				       PrivateKey}),
-    State = Connection:queue_handshake(Msg, State0),
-    State#state{diffie_hellman_keys = DHKeys};
-key_exchange(#state{role = server, key_algorithm = ecdhe_psk,
+    #state{handshake_env = HsEnv} = State = Connection:queue_handshake(Msg, State0),
+    State#state{handshake_env = HsEnv#handshake_env{kex_keys = DHKeys}};
+key_exchange(#state{static_env = #static_env{role = server}, 
 		    ssl_options = #ssl_options{psk_identity = PskIdentityHint},
-		    hashsign_algorithm = HashSignAlgo,
-		    private_key = PrivateKey,
+                    handshake_env = #handshake_env{kex_algorithm = ecdhe_psk,
+                                                   hashsign_algorithm = HashSignAlgo},
+                    connection_env = #connection_env{negotiated_version = Version,
+                                                     private_key = PrivateKey},
                     session = #session{ecc = ECCCurve},
-		    connection_states = ConnectionStates0,
-		    negotiated_version = Version
+		    connection_states = ConnectionStates0
 		   } = State0, Connection) ->
     ECDHKeys = public_key:generate_key(ECCCurve),
     #{security_parameters := SecParams} =
@@ -1782,17 +2007,19 @@ key_exchange(#state{role = server, key_algorithm = ecdhe_psk,
 				       HashSignAlgo, ClientRandom,
 				       ServerRandom,
 				       PrivateKey}),
-    State = Connection:queue_handshake(Msg, State0),
-    State#state{diffie_hellman_keys = ECDHKeys};
-key_exchange(#state{role = server, key_algorithm = rsa_psk,
+    #state{handshake_env = HsEnv} = State = Connection:queue_handshake(Msg, State0),
+    State#state{handshake_env = HsEnv#handshake_env{kex_keys = ECDHKeys}};
+key_exchange(#state{static_env = #static_env{role = server}, 
+                    handshake_env = #handshake_env{kex_algorithm = rsa_psk},
 		    ssl_options = #ssl_options{psk_identity = undefined}} = State, _) ->
     State;
-key_exchange(#state{role = server, key_algorithm = rsa_psk,
+key_exchange(#state{static_env = #static_env{role = server}, 
 		    ssl_options = #ssl_options{psk_identity = PskIdentityHint},
-		    hashsign_algorithm = HashSignAlgo,
-		    private_key = PrivateKey,
-		    connection_states = ConnectionStates0,
-		    negotiated_version = Version
+                    handshake_env = #handshake_env{kex_algorithm = rsa_psk,
+                                                   hashsign_algorithm = HashSignAlgo}, 
+                    connection_env = #connection_env{negotiated_version = Version,
+                                                     private_key = PrivateKey},
+		    connection_states = ConnectionStates0
 		   } = State0, Connection) ->
     #{security_parameters := SecParams} =
 	ssl_record:pending_connection_state(ConnectionStates0, read),
@@ -1804,17 +2031,18 @@ key_exchange(#state{role = server, key_algorithm = rsa_psk,
 				       ServerRandom,
 				       PrivateKey}),
     Connection:queue_handshake(Msg, State0);
-key_exchange(#state{role = server, key_algorithm = Algo,
+key_exchange(#state{static_env = #static_env{role = server}, 
 		    ssl_options = #ssl_options{user_lookup_fun = LookupFun},
-		    hashsign_algorithm = HashSignAlgo,
+                    handshake_env = #handshake_env{kex_algorithm = KexAlg,
+                                                   hashsign_algorithm = HashSignAlgo}, 
+                    connection_env = #connection_env{negotiated_version = Version,
+                                                     private_key = PrivateKey},
 		    session = #session{srp_username = Username},
-		    private_key = PrivateKey,
-		    connection_states = ConnectionStates0,
-		    negotiated_version = Version
+		    connection_states = ConnectionStates0
 		   } = State0, Connection)
-  when Algo == srp_dss;
-       Algo == srp_rsa;
-       Algo == srp_anon ->
+  when KexAlg == srp_dss;
+       KexAlg == srp_rsa;
+       KexAlg == srp_anon ->
     SrpParams = handle_srp_identity(Username, LookupFun),
     Keys = case generate_srp_server_keys(SrpParams, 0) of
 	       Alert = #alert{} ->
@@ -1831,82 +2059,86 @@ key_exchange(#state{role = server, key_algorithm = Algo,
 				       HashSignAlgo, ClientRandom,
 				       ServerRandom,
 				       PrivateKey}),
-    State = Connection:queue_handshake(Msg, State0),
-    State#state{srp_params = SrpParams,
-		srp_keys = Keys};
-key_exchange(#state{role = client,
-		    key_algorithm = rsa,
-		    public_key_info = PublicKeyInfo,
-		    negotiated_version = Version,
-		    premaster_secret = PremasterSecret} = State0, Connection) ->
+    #state{handshake_env = HsEnv} = State = Connection:queue_handshake(Msg, State0),
+    State#state{handshake_env = HsEnv#handshake_env{srp_params = SrpParams,
+                                                    kex_keys = Keys}};
+key_exchange(#state{static_env = #static_env{role = client},
+                    handshake_env = #handshake_env{kex_algorithm = rsa,
+                                                   public_key_info = PublicKeyInfo,
+                                                   premaster_secret = PremasterSecret},
+                    connection_env = #connection_env{negotiated_version = Version}
+		   } = State0, Connection) ->
     Msg = rsa_key_exchange(ssl:tls_version(Version), PremasterSecret, PublicKeyInfo),
     Connection:queue_handshake(Msg, State0);
-key_exchange(#state{role = client,
-		    key_algorithm = Algorithm,
-		    negotiated_version = Version,
-		    diffie_hellman_keys = {DhPubKey, _}
-		   } = State0, Connection)
-  when Algorithm == dhe_dss;
-       Algorithm == dhe_rsa;
-       Algorithm == dh_anon ->
+key_exchange(#state{static_env = #static_env{role = client},
+                    handshake_env = #handshake_env{kex_algorithm = KexAlg,
+                                                   kex_keys = {DhPubKey, _}},
+                    connection_env = #connection_env{negotiated_version = Version}
+                   } = State0, Connection)
+  when KexAlg == dhe_dss;
+       KexAlg == dhe_rsa;
+       KexAlg == dh_anon ->
     Msg =  ssl_handshake:key_exchange(client, ssl:tls_version(Version), {dh, DhPubKey}),
     Connection:queue_handshake(Msg, State0);
 
-key_exchange(#state{role = client,
-		    key_algorithm = Algorithm,
-		    negotiated_version = Version,
-                    session = Session,
-		    diffie_hellman_keys = #'ECPrivateKey'{parameters = ECCurve} = Key} = State0, Connection)
-  when Algorithm == ecdhe_ecdsa; Algorithm == ecdhe_rsa;
-       Algorithm == ecdh_ecdsa; Algorithm == ecdh_rsa;
-       Algorithm == ecdh_anon ->
+key_exchange(#state{static_env = #static_env{role = client},
+                    handshake_env = #handshake_env{kex_algorithm = KexAlg,
+                                                   kex_keys = #'ECPrivateKey'{parameters = ECCurve} = Key},
+                    connection_env = #connection_env{negotiated_version = Version},
+                    session = Session
+		   } = State0, Connection)
+  when KexAlg == ecdhe_ecdsa; 
+       KexAlg == ecdhe_rsa;
+       KexAlg == ecdh_ecdsa; 
+       KexAlg == ecdh_rsa;
+       KexAlg == ecdh_anon ->
     Msg = ssl_handshake:key_exchange(client, ssl:tls_version(Version), {ecdh, Key}),
     Connection:queue_handshake(Msg, State0#state{session = Session#session{ecc = ECCurve}});
-key_exchange(#state{role = client,
-		    ssl_options = SslOpts,
-		    key_algorithm = psk,
-		    negotiated_version = Version} = State0, Connection) ->
+key_exchange(#state{static_env = #static_env{role = client},
+                    handshake_env = #handshake_env{kex_algorithm = psk},
+                    connection_env = #connection_env{negotiated_version = Version},
+		    ssl_options = SslOpts} = State0, Connection) ->
     Msg =  ssl_handshake:key_exchange(client, ssl:tls_version(Version), 
 				      {psk, SslOpts#ssl_options.psk_identity}),
     Connection:queue_handshake(Msg, State0);
-key_exchange(#state{role = client,
-		    ssl_options = SslOpts,
-		    key_algorithm = dhe_psk,
-		    negotiated_version = Version,
-		    diffie_hellman_keys = {DhPubKey, _}} = State0, Connection) ->
+key_exchange(#state{static_env = #static_env{role = client},
+                    handshake_env = #handshake_env{kex_algorithm = dhe_psk,
+                                                   kex_keys = {DhPubKey, _}},
+                    connection_env = #connection_env{negotiated_version = Version},
+		    ssl_options = SslOpts} = State0, Connection) ->
     Msg =  ssl_handshake:key_exchange(client, ssl:tls_version(Version),
 				      {dhe_psk, 
 				       SslOpts#ssl_options.psk_identity, DhPubKey}),
     Connection:queue_handshake(Msg, State0);
 
-key_exchange(#state{role = client,
-		    ssl_options = SslOpts,
-		    key_algorithm = ecdhe_psk,
-		    negotiated_version = Version,
-		    diffie_hellman_keys = ECDHKeys} = State0, Connection) ->
+key_exchange(#state{static_env = #static_env{role = client},
+                    handshake_env = #handshake_env{kex_algorithm = ecdhe_psk,
+                                                   kex_keys = ECDHKeys},
+                    connection_env = #connection_env{negotiated_version = Version},
+		    ssl_options = SslOpts} = State0, Connection) ->
     Msg =  ssl_handshake:key_exchange(client, ssl:tls_version(Version),
 				      {ecdhe_psk,
 				       SslOpts#ssl_options.psk_identity, ECDHKeys}),
     Connection:queue_handshake(Msg, State0);
 
-key_exchange(#state{role = client,
-		    ssl_options = SslOpts,
-		    key_algorithm = rsa_psk,
-		    public_key_info = PublicKeyInfo,
-		    negotiated_version = Version,
-		    premaster_secret = PremasterSecret}
+key_exchange(#state{static_env = #static_env{role = client},
+                    handshake_env = #handshake_env{kex_algorithm = rsa_psk,
+                                                   public_key_info = PublicKeyInfo,
+                                                   premaster_secret = PremasterSecret},
+                    connection_env = #connection_env{negotiated_version = Version},
+		    ssl_options = SslOpts}
 	     = State0, Connection) ->
     Msg = rsa_psk_key_exchange(ssl:tls_version(Version), SslOpts#ssl_options.psk_identity,
 			       PremasterSecret, PublicKeyInfo),
     Connection:queue_handshake(Msg, State0);
-key_exchange(#state{role = client,
-		    key_algorithm = Algorithm,
-		    negotiated_version = Version,
-		    srp_keys = {ClientPubKey, _}}
+key_exchange(#state{static_env = #static_env{role = client},
+                    handshake_env = #handshake_env{kex_algorithm = KexAlg,
+                                                   kex_keys = {ClientPubKey, _}},
+                    connection_env = #connection_env{negotiated_version = Version}}
 	     = State0, Connection)
-  when Algorithm == srp_dss;
-       Algorithm == srp_rsa;
-       Algorithm == srp_anon ->
+  when KexAlg == srp_dss;
+       KexAlg == srp_rsa;
+       KexAlg == srp_anon ->
     Msg =  ssl_handshake:key_exchange(client, ssl:tls_version(Version), {srp, ClientPubKey}),
     Connection:queue_handshake(Msg, State0).
 
@@ -1943,18 +2175,24 @@ rsa_psk_key_exchange(Version, PskIdentity, PremasterSecret,
 rsa_psk_key_exchange(_, _, _, _) ->
     throw (?ALERT_REC(?FATAL,?HANDSHAKE_FAILURE, pub_key_is_not_rsa)).
 
-request_client_cert(#state{key_algorithm = Alg} = State, _)
-  when Alg == dh_anon; Alg == ecdh_anon;
-       Alg == psk; Alg == dhe_psk; Alg == ecdhe_psk; Alg == rsa_psk;
-       Alg == srp_dss; Alg == srp_rsa; Alg == srp_anon ->
+request_client_cert(#state{handshake_env = #handshake_env{kex_algorithm = Alg}} = State, _)
+  when Alg == dh_anon; 
+       Alg == ecdh_anon;
+       Alg == psk; 
+       Alg == dhe_psk; 
+       Alg == ecdhe_psk; 
+       Alg == rsa_psk;
+       Alg == srp_dss; 
+       Alg == srp_rsa; 
+       Alg == srp_anon ->
     State;
 
-request_client_cert(#state{ssl_options = #ssl_options{verify = verify_peer, 
-						      signature_algs = SupportedHashSigns},
-			   connection_states = ConnectionStates0,
-			   cert_db = CertDbHandle,
-			   cert_db_ref = CertDbRef,
-			   negotiated_version = Version} = State0, Connection) ->
+request_client_cert(#state{static_env = #static_env{cert_db = CertDbHandle,
+                                                    cert_db_ref = CertDbRef},
+                           connection_env = #connection_env{negotiated_version = Version},
+                           ssl_options = #ssl_options{verify = verify_peer,
+                                                      signature_algs = SupportedHashSigns},
+                           connection_states = ConnectionStates0} = State0, Connection) ->
     #{security_parameters :=
 	  #security_parameters{cipher_suite = CipherSuite}} =
 	ssl_record:pending_connection_state(ConnectionStates0, read),
@@ -1971,7 +2209,7 @@ request_client_cert(#state{ssl_options = #ssl_options{verify = verify_none}} =
     State.
 
 calculate_master_secret(PremasterSecret, 
-			#state{negotiated_version = Version,
+			#state{connection_env = #connection_env{negotiated_version = Version},
 			       connection_states = ConnectionStates0,
 			       session = Session0} = State0, Connection,
 			_Current, Next) ->
@@ -1998,27 +2236,29 @@ finalize_handshake(State0, StateName, Connection) ->
     State = next_protocol(State2, Connection),
     finished(State, StateName, Connection).
 
-next_protocol(#state{role = server} = State, _) ->
+next_protocol(#state{static_env = #static_env{role = server}} = State, _) ->
     State;
-next_protocol(#state{negotiated_protocol = undefined} = State, _) ->
+next_protocol(#state{handshake_env = #handshake_env{negotiated_protocol = undefined}} = State, _) ->
     State;
-next_protocol(#state{expecting_next_protocol_negotiation = false} = State, _) ->
+next_protocol(#state{handshake_env = #handshake_env{expecting_next_protocol_negotiation = false}} = State, _) ->
     State;
-next_protocol(#state{negotiated_protocol = NextProtocol} = State0, Connection) ->
+next_protocol(#state{handshake_env = #handshake_env{negotiated_protocol = NextProtocol}} = State0, Connection) ->
     NextProtocolMessage = ssl_handshake:next_protocol(NextProtocol),
     Connection:queue_handshake(NextProtocolMessage, State0).
 
 cipher_protocol(State, Connection) ->
     Connection:queue_change_cipher(#change_cipher_spec{}, State).
 
-finished(#state{role = Role, negotiated_version = Version,
+finished(#state{static_env = #static_env{role = Role},
+                handshake_env = #handshake_env{tls_handshake_history = Hist},
+                connection_env = #connection_env{negotiated_version = Version},
 		session = Session,
-                connection_states = ConnectionStates0,
-                tls_handshake_history = Handshake0} = State0, StateName, Connection) ->
+                connection_states = ConnectionStates0} = State0, 
+         StateName, Connection) ->
     MasterSecret = Session#session.master_secret,
     Finished = ssl_handshake:finished(ssl:tls_version(Version), Role,
 				       get_current_prf(ConnectionStates0, write),
-				       MasterSecret, Handshake0),
+				       MasterSecret, Hist),
     ConnectionStates = save_verify_data(Role, Finished, ConnectionStates0, StateName),
     Connection:send_handshake(Finished, State0#state{connection_states =
 								 ConnectionStates}).
@@ -2034,64 +2274,71 @@ save_verify_data(server, #finished{verify_data = Data}, ConnectionStates, abbrev
 
 calculate_secret(#server_dh_params{dh_p = Prime, dh_g = Base, 
 				   dh_y = ServerPublicDhKey} = Params,
-		 State, Connection) ->
+		 #state{handshake_env = HsEnv} = State, Connection) ->
     Keys = {_, PrivateDhKey} = crypto:generate_key(dh, [Prime, Base]),
     PremasterSecret =
 	ssl_handshake:premaster_secret(ServerPublicDhKey, PrivateDhKey, Params),
     calculate_master_secret(PremasterSecret,
-			    State#state{diffie_hellman_keys = Keys}, 
+			    State#state{handshake_env = HsEnv#handshake_env{kex_keys = Keys}}, 
 			    Connection, certify, certify);
 
 calculate_secret(#server_ecdh_params{curve = ECCurve, public = ECServerPubKey},
-		     State=#state{session=Session}, Connection) ->
+		     #state{handshake_env = HsEnv,
+                            session = Session} = State, Connection) ->
     ECDHKeys = public_key:generate_key(ECCurve),
     PremasterSecret = 
 	ssl_handshake:premaster_secret(#'ECPoint'{point = ECServerPubKey}, ECDHKeys),
     calculate_master_secret(PremasterSecret,
-			    State#state{diffie_hellman_keys = ECDHKeys,
+			    State#state{handshake_env = HsEnv#handshake_env{kex_keys = ECDHKeys},
 					session = Session#session{ecc = ECCurve}},
 			    Connection, certify, certify);
 
 calculate_secret(#server_psk_params{
 		    hint = IdentityHint},
-		 State, Connection) ->
+		 #state{handshake_env = HsEnv} = State, Connection) ->
     %% store for later use
-    Connection:next_event(certify, no_record, State#state{psk_identity = IdentityHint});
+    Connection:next_event(certify, no_record, 
+                          State#state{handshake_env = 
+                                          HsEnv#handshake_env{server_psk_identity = IdentityHint}});
 
 calculate_secret(#server_dhe_psk_params{
 		    dh_params = #server_dh_params{dh_p = Prime, dh_g = Base}} = ServerKey,
-		    #state{ssl_options = #ssl_options{user_lookup_fun = PSKLookup}} = 
+		    #state{handshake_env = HsEnv,
+                           ssl_options = #ssl_options{user_lookup_fun = PSKLookup}} = 
 		     State, Connection) ->
     Keys = {_, PrivateDhKey} =
 	crypto:generate_key(dh, [Prime, Base]),
     PremasterSecret = ssl_handshake:premaster_secret(ServerKey, PrivateDhKey, PSKLookup),
-    calculate_master_secret(PremasterSecret, State#state{diffie_hellman_keys = Keys},
+    calculate_master_secret(PremasterSecret, State#state{handshake_env = HsEnv#handshake_env{kex_keys = Keys}},
 			    Connection, certify, certify);
 
 calculate_secret(#server_ecdhe_psk_params{
                     dh_params = #server_ecdh_params{curve = ECCurve}} = ServerKey,
                  #state{ssl_options = #ssl_options{user_lookup_fun = PSKLookup}} = 
-		     State=#state{session=Session}, Connection) ->
+		     #state{handshake_env = HsEnv,
+                            session = Session} = State, Connection) ->
     ECDHKeys = public_key:generate_key(ECCurve),
 
     PremasterSecret = ssl_handshake:premaster_secret(ServerKey, ECDHKeys, PSKLookup),
     calculate_master_secret(PremasterSecret,
-			    State#state{diffie_hellman_keys = ECDHKeys,
+			    State#state{handshake_env = HsEnv#handshake_env{kex_keys = ECDHKeys},
 					session = Session#session{ecc = ECCurve}},
 			    Connection, certify, certify);
 
 calculate_secret(#server_srp_params{srp_n = Prime, srp_g = Generator} = ServerKey,
-		 #state{ssl_options = #ssl_options{srp_identity = SRPId}} = State, 
+		 #state{handshake_env = HsEnv,
+                        ssl_options = #ssl_options{srp_identity = SRPId}} = State, 
 		 Connection) ->
     Keys = generate_srp_client_keys(Generator, Prime, 0),
     PremasterSecret = ssl_handshake:premaster_secret(ServerKey, Keys, SRPId),
-    calculate_master_secret(PremasterSecret, State#state{srp_keys = Keys}, Connection, 
+    calculate_master_secret(PremasterSecret, State#state{handshake_env = HsEnv#handshake_env{kex_keys = Keys}}, Connection, 
 			    certify, certify).
 
 master_secret(#alert{} = Alert, _) ->
     Alert;
-master_secret(PremasterSecret, #state{session = Session,
-				      negotiated_version = Version, role = Role,
+master_secret(PremasterSecret, #state{static_env = #static_env{role = Role},
+                                      connection_env = #connection_env{negotiated_version = Version},
+                                      session = Session,
 				      connection_states = ConnectionStates0} = State) ->
     case ssl_handshake:master_secret(ssl:tls_version(Version), PremasterSecret,
 				     ConnectionStates0, Role) of
@@ -2151,7 +2398,7 @@ cipher_role(client, Data, Session, #state{connection_states = ConnectionStates0}
      {Record, State} = prepare_connection(State0#state{session = Session,
 						       connection_states = ConnectionStates},
 					 Connection),
-    Connection:next_event(connection, Record, State);
+    Connection:next_event(connection, Record, State, [{{timeout, handshake}, infinity, close}]);
 cipher_role(server, Data, Session,  #state{connection_states = ConnectionStates0} = State0,
 	    Connection) ->
     ConnectionStates1 = ssl_record:set_client_verify_data(current_read, Data, 
@@ -2160,15 +2407,15 @@ cipher_role(server, Data, Session,  #state{connection_states = ConnectionStates0
 	finalize_handshake(State0#state{connection_states = ConnectionStates1,
 					session = Session}, cipher, Connection),
     {Record, State} = prepare_connection(State1, Connection),
-    Connection:next_event(connection, Record, State, Actions).
-
-is_anonymous(Algo) when Algo == dh_anon;
-			Algo == ecdh_anon;
-			Algo == psk;
-			Algo == dhe_psk;
-			Algo == ecdhe_psk;
-			Algo == rsa_psk;
-			Algo == srp_anon ->
+    Connection:next_event(connection, Record, State, [{{timeout, handshake}, infinity, close} | Actions]).
+
+is_anonymous(KexAlg) when KexAlg == dh_anon;
+                          KexAlg == ecdh_anon;
+                          KexAlg == psk;
+                          KexAlg == dhe_psk;
+                          KexAlg == ecdhe_psk;
+                          KexAlg == rsa_psk;
+                          KexAlg == srp_anon ->
     true;
 is_anonymous(_) ->
     false.
@@ -2282,6 +2529,30 @@ set_socket_opts(ConnectionCb, Transport, Socket, [{active, Active}| Opts], SockO
        Active == false ->
     set_socket_opts(ConnectionCb, Transport, Socket, Opts, 
 		    SockOpts#socket_options{active = Active}, Other);
+set_socket_opts(ConnectionCb, Transport, Socket, [{active, Active1} = Opt| Opts],
+                SockOpts=#socket_options{active = Active0}, Other)
+  when Active1 >= -32768, Active1 =< 32767 ->
+    Active = if
+        is_integer(Active0), Active0 + Active1 < -32768 ->
+            error;
+        is_integer(Active0), Active0 + Active1 =< 0 ->
+            false;
+        is_integer(Active0), Active0 + Active1 > 32767 ->
+            error;
+        Active1 =< 0 ->
+            false;
+        is_integer(Active0) ->
+            Active0 + Active1;
+        true ->
+            Active1
+    end,
+    case Active of
+        error ->
+            {{error, {options, {socket_options, Opt}} }, SockOpts};
+        _ ->
+            set_socket_opts(ConnectionCb, Transport, Socket, Opts,
+                            SockOpts#socket_options{active = Active}, Other)
+    end;
 set_socket_opts(_,_, _, [{active, _} = Opt| _], SockOpts, _) ->
     {{error, {options, {socket_options, Opt}} }, SockOpts};
 set_socket_opts(ConnectionCb, Transport, Socket, [Opt | Opts], SockOpts, Other) ->
@@ -2296,22 +2567,6 @@ hibernate_after(connection = StateName,
 hibernate_after(StateName, State, Actions) ->
     {next_state, StateName, State, Actions}.
 
-map_extensions(#hello_extensions{renegotiation_info = RenegotiationInfo,
-                                 signature_algs = SigAlg,          
-                                 alpn = Alpn,
-                                 next_protocol_negotiation = Next, 
-                                 srp = SRP,
-                                 ec_point_formats = ECPointFmt,
-                                 elliptic_curves = ECCCurves,
-                                 sni = SNI}) ->
-    #{renegotiation_info => ssl_handshake:extension_value(RenegotiationInfo),
-      signature_algs =>  ssl_handshake:extension_value(SigAlg),
-      alpn =>  ssl_handshake:extension_value(Alpn),
-      srp  => ssl_handshake:extension_value(SRP),
-      next_protocol => ssl_handshake:extension_value(Next),
-      ec_point_formats  => ssl_handshake:extension_value(ECPointFmt),
-      elliptic_curves => ssl_handshake:extension_value(ECCCurves),
-      sni => ssl_handshake:extension_value(SNI)}.
 
 terminate_alert(normal) ->
     ?ALERT_REC(?WARNING, ?CLOSE_NOTIFY);
@@ -2325,18 +2580,18 @@ handle_trusted_certs_db(#state{ssl_options =
 				   #ssl_options{cacertfile = <<>>, cacerts = []}}) ->
     %% No trusted certs specified
     ok;
-handle_trusted_certs_db(#state{cert_db_ref = Ref,
-			       cert_db = CertDb,
-			       ssl_options = #ssl_options{cacertfile = <<>>}}) when CertDb =/= undefined ->
+handle_trusted_certs_db(#state{static_env = #static_env{cert_db_ref = Ref,
+                                                        cert_db = CertDb},
+                               ssl_options = #ssl_options{cacertfile = <<>>}}) when CertDb =/= undefined ->
     %% Certs provided as DER directly can not be shared
     %% with other connections and it is safe to delete them when the connection ends.
     ssl_pkix_db:remove_trusted_certs(Ref, CertDb);
-handle_trusted_certs_db(#state{file_ref_db = undefined}) ->
+handle_trusted_certs_db(#state{static_env = #static_env{file_ref_db = undefined}}) ->
     %% Something went wrong early (typically cacertfile does not
     %% exist) so there is nothing to handle
     ok;
-handle_trusted_certs_db(#state{cert_db_ref = Ref,
-			       file_ref_db = RefDb,
+handle_trusted_certs_db(#state{static_env = #static_env{cert_db_ref = Ref,
+                                                        file_ref_db = RefDb},
 			       ssl_options = #ssl_options{cacertfile = File}}) ->
     case ssl_pkix_db:ref_count(Ref, RefDb, -1) of
 	0 ->
@@ -2345,7 +2600,7 @@ handle_trusted_certs_db(#state{cert_db_ref = Ref,
 	    ok
     end.
 
-prepare_connection(#state{renegotiation = Renegotiate, 
+prepare_connection(#state{handshake_env = #handshake_env{renegotiation = Renegotiate}, 
 			  start_or_recv_from = RecvFrom} = State0, Connection) 
   when Renegotiate =/= {false, first}, 
        RecvFrom =/= undefined ->
@@ -2355,42 +2610,54 @@ prepare_connection(State0, Connection) ->
     State = Connection:reinit(State0),
     {no_record, ack_connection(State)}.
 
-ack_connection(#state{renegotiation = {true, Initiater}} = State) when Initiater == peer;
-                                                                       Initiater == internal ->
-    State#state{renegotiation = undefined};
-ack_connection(#state{renegotiation = {true, From}} = State) ->    
+ack_connection(#state{handshake_env = #handshake_env{renegotiation = {true, Initiater}} = HsEnv} = State) when Initiater == peer;
+                                                                                                               Initiater == internal ->
+    State#state{handshake_env = HsEnv#handshake_env{renegotiation = undefined}};
+ack_connection(#state{handshake_env = #handshake_env{renegotiation = {true, From}} = HsEnv} = State) ->    
     gen_statem:reply(From, ok),
-    State#state{renegotiation = undefined};
-ack_connection(#state{renegotiation = {false, first}, 
-		      start_or_recv_from = StartFrom,
-		      timer = Timer} = State) when StartFrom =/= undefined ->
+    State#state{handshake_env = HsEnv#handshake_env{renegotiation = undefined}};
+ack_connection(#state{handshake_env = #handshake_env{renegotiation = {false, first}} = HsEnv, 
+		      start_or_recv_from = StartFrom} = State) when StartFrom =/= undefined ->
     gen_statem:reply(StartFrom, connected),
-    cancel_timer(Timer),
-    State#state{renegotiation = undefined, 
-		start_or_recv_from = undefined, timer = undefined};
+    State#state{handshake_env = HsEnv#handshake_env{renegotiation = undefined}, 
+		start_or_recv_from = undefined};
 ack_connection(State) ->
     State.
 
-cancel_timer(undefined) ->
-    ok;
-cancel_timer(Timer) ->
-    erlang:cancel_timer(Timer),
-    ok.
-
 session_handle_params(#server_ecdh_params{curve = ECCurve}, Session) ->
     Session#session{ecc = ECCurve};
 session_handle_params(_, Session) ->
     Session.
 
-register_session(client, Host, Port, #session{is_resumable = new} = Session0) ->
+handle_session(Role = server, #ssl_options{reuse_sessions = true} = SslOpts, 
+               Host, Port, Session0) ->
+    register_session(Role, host_id(Role, Host, SslOpts), Port, Session0, true);
+handle_session(Role = client, #ssl_options{verify = verify_peer,
+                                           reuse_sessions = Reuse} = SslOpts, 
+               Host, Port, Session0) when Reuse =/= false ->
+    register_session(Role, host_id(Role, Host, SslOpts), Port, Session0, reg_type(Reuse));
+handle_session(server, _, Host, Port, Session) ->
+    %% Remove "session of type new" entry from session DB 
+    ssl_manager:invalidate_session(Host, Port, Session),
+    Session;
+handle_session(client, _,_,_, Session) ->
+    %% In client case there is no entry yet, so nothing to remove
+    Session.
+
+reg_type(save) ->
+    true;
+reg_type(true) ->
+    unique.
+
+register_session(client, Host, Port, #session{is_resumable = new} = Session0, Save) ->
     Session = Session0#session{is_resumable = true},
-    ssl_manager:register_session(Host, Port, Session),
+    ssl_manager:register_session(Host, Port, Session, Save),
     Session;
-register_session(server, _, Port, #session{is_resumable = new} = Session0) ->
+register_session(server, _, Port, #session{is_resumable = new} = Session0, _) ->
     Session = Session0#session{is_resumable = true},
     ssl_manager:register_session(Port, Session),
     Session;
-register_session(_, _, _, Session) ->
+register_session(_, _, _, Session, _) ->
     Session. %% Already registered
 
 host_id(client, _Host, #ssl_options{server_name_indication = Hostname}) when is_list(Hostname) ->
@@ -2399,19 +2666,21 @@ host_id(_, Host, _) ->
     Host.
 
 handle_new_session(NewId, CipherSuite, Compression, 
-		   #state{session = Session0,
-			  protocol_cb = Connection} = State0) ->
+		   #state{static_env = #static_env{protocol_cb = Connection},
+                          session = Session0
+			 } = State0) ->
     Session = Session0#session{session_id = NewId,
 			       cipher_suite = CipherSuite,
 			       compression_method = Compression},
     Connection:next_event(certify, no_record, State0#state{session = Session}).
 
-handle_resumed_session(SessId, #state{connection_states = ConnectionStates0,
-				      negotiated_version = Version,
-				      host = Host, port = Port,
-				      protocol_cb = Connection,
-				      session_cache = Cache,
-				      session_cache_cb = CacheCb} = State) ->
+handle_resumed_session(SessId, #state{static_env = #static_env{host = Host,
+                                                               port = Port,
+                                                               protocol_cb = Connection,
+                                                               session_cache = Cache,
+                                                               session_cache_cb = CacheCb},
+                                      connection_env = #connection_env{negotiated_version = Version},
+                                      connection_states = ConnectionStates0} = State) ->
     Session = CacheCb:lookup(Cache, {{Host, Port}, SessId}),
     case ssl_handshake:master_secret(ssl:tls_version(Version), Session,
 				     ConnectionStates0, client) of
@@ -2468,8 +2737,13 @@ ssl_options_list([Key | Keys], [Value | Values], Acc) ->
 handle_active_option(false, connection = StateName, To, Reply, State) ->
     hibernate_after(StateName, State, [{reply, To, Reply}]);
 
-handle_active_option(_, connection = StateName0, To, Reply, #state{protocol_cb = Connection,
-							      user_data_buffer = <<>>} = State0) ->
+handle_active_option(_, connection = StateName, To, _Reply, #state{connection_env = #connection_env{terminated = true},
+                                                                   user_data_buffer = {_,0,_}} = State) ->
+    handle_normal_shutdown(?ALERT_REC(?FATAL, ?CLOSE_NOTIFY, all_data_deliverd), StateName, 
+                           State#state{start_or_recv_from = To}),
+    {stop,{shutdown, peer_close}, State};
+handle_active_option(_, connection = StateName0, To, Reply, #state{static_env = #static_env{protocol_cb = Connection},
+                                                                   user_data_buffer = {_,0,_}} = State0) ->
     case Connection:next_event(StateName0, no_record, State0) of
 	{next_state, StateName, State} ->
 	    hibernate_after(StateName, State, [{reply, To, Reply}]);
@@ -2478,12 +2752,13 @@ handle_active_option(_, connection = StateName0, To, Reply, #state{protocol_cb =
 	{stop, _, _} = Stop ->
 	    Stop
     end;
-handle_active_option(_, StateName, To, Reply, #state{user_data_buffer = <<>>} = State) ->
+handle_active_option(_, StateName, To, Reply, #state{user_data_buffer = {_,0,_}} = State) ->
     %% Active once already set 
     {next_state, StateName, State, [{reply, To, Reply}]};
 
-%% user_data_buffer =/= <<>>
-handle_active_option(_, StateName0, To, Reply, #state{protocol_cb = Connection} = State0) -> 
+%% user_data_buffer nonempty
+handle_active_option(_, StateName0, To, Reply,
+                     #state{static_env = #static_env{protocol_cb = Connection}} = State0) ->
     case read_application_data(<<>>, State0) of
 	{stop, _, _} = Stop ->
 	    Stop;
@@ -2501,33 +2776,25 @@ handle_active_option(_, StateName0, To, Reply, #state{protocol_cb = Connection}
 
 
 %% Picks ClientData 
-get_data(_, _, <<>>) ->
-    {more, <<>>};
-%% Recv timed out save buffer data until next recv
-get_data(#socket_options{active=false}, undefined, Buffer) ->
-    {passive, Buffer};
-get_data(#socket_options{active=Active, packet=Raw}, BytesToRead, Buffer) 
+get_data(#socket_options{active=false}, undefined, _Bin) ->
+    %% Recv timed out save buffer data until next recv
+    passive;
+get_data(#socket_options{active=Active, packet=Raw}, BytesToRead, Bin)
   when Raw =:= raw; Raw =:= 0 ->   %% Raw Mode
-    if 
-	Active =/= false orelse BytesToRead =:= 0  ->
+    case Bin of
+        <<_/binary>> when Active =/= false orelse BytesToRead =:= 0 ->
 	    %% Active true or once, or passive mode recv(0)  
-	    {ok, Buffer, <<>>};
-	byte_size(Buffer) >= BytesToRead ->  
+	    {ok, Bin, <<>>};
+        <<Data:BytesToRead/binary, Rest/binary>> ->
 	    %% Passive Mode, recv(Bytes) 
-	    <<Data:BytesToRead/binary, Rest/binary>> = Buffer,
-	    {ok, Data, Rest};
-	true ->
+            {ok, Data, Rest};
+        <<_/binary>> ->
 	    %% Passive Mode not enough data
-	    {more, Buffer}
+            {more, BytesToRead}
     end;
-get_data(#socket_options{packet=Type, packet_size=Size}, _, Buffer) ->
+get_data(#socket_options{packet=Type, packet_size=Size}, _, Bin) ->
     PacketOpts = [{packet_size, Size}], 
-    case decode_packet(Type, Buffer, PacketOpts) of
-	{more, _} ->
-	    {more, Buffer};
-	Decoded ->
-	    Decoded
-    end.
+    decode_packet(Type, Bin, PacketOpts).
 
 decode_packet({http, headers}, Buffer, PacketOpts) ->
     decode_packet(httph, Buffer, PacketOpts);
@@ -2545,24 +2812,39 @@ decode_packet(Type, Buffer, PacketOpts) ->
 %% Note that if the user has explicitly configured the socket to expect
 %% HTTP headers using the {packet, httph} option, we don't do any automatic
 %% switching of states.
-deliver_app_data(CPids, Transport, Socket, SOpts = #socket_options{active=Active, packet=Type},
-		 Data, Pid, From, Tracker, Connection) ->
-    send_or_reply(Active, Pid, From, 
-                  format_reply(CPids, Transport, Socket, SOpts, Data, Tracker, Connection)),
-    SO = case Data of
-	     {P, _, _, _} when ((P =:= http_request) or (P =:= http_response)),
-			       ((Type =:= http) or (Type =:= http_bin)) ->
-	         SOpts#socket_options{packet={Type, headers}};
-	     http_eoh when tuple_size(Type) =:= 2 ->
-                 % End of headers - expect another Request/Response line
-	         {Type1, headers} = Type,
-	         SOpts#socket_options{packet=Type1};
-	     _ ->
-	         SOpts
-	 end,
+deliver_app_data(
+  CPids, Transport, Socket,
+  #socket_options{active=Active, packet=Type} = SOpts,
+  Data, Pid, From, Tracker, Connection) ->
+    %%
+    send_or_reply(
+      Active, Pid, From,
+      format_reply(
+        CPids, Transport, Socket, SOpts, Data, Tracker, Connection)),
+    SO =
+        case Data of
+            {P, _, _, _}
+              when ((P =:= http_request) or (P =:= http_response)),
+                   ((Type =:= http) or (Type =:= http_bin)) ->
+                SOpts#socket_options{packet={Type, headers}};
+            http_eoh when tuple_size(Type) =:= 2 ->
+                %% End of headers - expect another Request/Response line
+                {Type1, headers} = Type,
+                SOpts#socket_options{packet=Type1};
+            _ ->
+                SOpts
+        end,
     case Active of
         once ->
             SO#socket_options{active=false};
+        1 ->
+            send_user(
+              Pid,
+              format_passive(
+                CPids, Transport, Socket, Tracker, Connection)),
+            SO#socket_options{active=false};
+        N when is_integer(N) ->
+            SO#socket_options{active=N - 1};
 	_ ->
 	    SO
     end.
@@ -2572,7 +2854,7 @@ format_reply(_, _, _,#socket_options{active = false, mode = Mode, packet = Packe
     {ok, do_format_reply(Mode, Packet, Header, Data)};
 format_reply(CPids, Transport, Socket, #socket_options{active = _, mode = Mode, packet = Packet,
 						header = Header}, Data, Tracker, Connection) ->
-    {ssl, Connection:socket(CPids, Transport, Socket, Connection, Tracker), 
+    {ssl, Connection:socket(CPids, Transport, Socket, Tracker),
      do_format_reply(Mode, Packet, Header, Data)}.
 
 deliver_packet_error(CPids, Transport, Socket, 
@@ -2584,7 +2866,7 @@ format_packet_error(_, _, _,#socket_options{active = false, mode = Mode}, Data,
     {error, {invalid_packet, do_format_reply(Mode, raw, 0, Data)}};
 format_packet_error(CPids, Transport, Socket, #socket_options{active = _, mode = Mode}, 
                     Data, Tracker, Connection) ->
-    {ssl_error, Connection:socket(CPids, Transport, Socket, Connection, Tracker), 
+    {ssl_error, Connection:socket(CPids, Transport, Socket, Tracker),
      {invalid_packet, do_format_reply(Mode, raw, 0, Data)}}.
 
 do_format_reply(binary, _, N, Data) when N > 0 ->  % Header mode
@@ -2599,6 +2881,9 @@ do_format_reply(list, Packet, _, Data)
 do_format_reply(list, _,_, Data) ->
     binary_to_list(Data).
 
+format_passive(CPids, Transport, Socket, Tracker, Connection) ->
+    {ssl_passive, Connection:socket(CPids, Transport, Socket, Tracker)}.
+
 header(0, <<>>) ->
     <<>>;
 header(_, <<>>) ->
@@ -2640,22 +2925,20 @@ alert_user(Pids, Transport, Tracker, Socket, Active, Pid, From, Alert, Role, Con
     case ssl_alert:reason_code(Alert, Role) of
 	closed ->
 	    send_or_reply(Active, Pid, From,
-			  {ssl_closed, Connection:socket(Pids, 
-							 Transport, Socket, Connection, Tracker)});
+			  {ssl_closed, Connection:socket(Pids, Transport, Socket, Tracker)});
 	ReasonCode ->
 	    send_or_reply(Active, Pid, From,
-			  {ssl_error, Connection:socket(Pids, 
-							Transport, Socket, Connection, Tracker), ReasonCode})
+			  {ssl_error, Connection:socket(Pids, Transport, Socket, Tracker), ReasonCode})
     end.
 
-log_alert(true, Role, ProtocolName, StateName, #alert{role = Role} = Alert) ->
+log_alert(Level, Role, ProtocolName, StateName, #alert{role = Role} = Alert) ->
     Txt = ssl_alert:own_alert_txt(Alert),
-    error_logger:info_report(io_lib:format("~s ~p: In state ~p ~s\n", [ProtocolName, Role, StateName, Txt]));
-log_alert(true, Role, ProtocolName, StateName, Alert) ->
+    Report = io_lib:format("~s ~p: In state ~p ~s\n", [ProtocolName, Role, StateName, Txt]),
+    ssl_logger:notice(Level, Report);
+log_alert(Level, Role, ProtocolName, StateName, Alert) ->
     Txt = ssl_alert:alert_txt(Alert),
-    error_logger:info_report(io_lib:format("~s ~p: In state ~p ~s\n", [ProtocolName, Role, StateName, Txt]));
-log_alert(false, _, _, _, _) ->
-    ok.
+    Report = io_lib:format("~s ~p: In state ~p ~s\n", [ProtocolName, Role, StateName, Txt]),
+    ssl_logger:notice(Level, Report).
 
 invalidate_session(client, Host, Port, Session) ->
     ssl_manager:invalidate_session(Host, Port, Session);
@@ -2664,7 +2947,9 @@ invalidate_session(server, _, Port, Session) ->
 
 handle_sni_extension(undefined, State) ->
     State;
-handle_sni_extension(#sni{hostname = Hostname}, State0) ->
+handle_sni_extension(#sni{hostname = Hostname}, #state{static_env = #static_env{role = Role} = InitStatEnv0,
+                                                       handshake_env = HsEnv,
+                                                       connection_env = CEnv} = State0) ->
     NewOptions = update_ssl_options_from_sni(State0#state.ssl_options, Hostname),
     case NewOptions of
 	undefined ->
@@ -2678,19 +2963,21 @@ handle_sni_extension(#sni{hostname = Hostname}, State0) ->
                    private_key := Key,
                    dh_params := DHParams,
                    own_certificate := OwnCert}} =
-                 ssl_config:init(NewOptions, State0#state.role),
+                 ssl_config:init(NewOptions, Role),
              State0#state{
                session = State0#state.session#session{own_certificate = OwnCert},
-               file_ref_db = FileRefHandle,
-               cert_db_ref = Ref,
-               cert_db = CertDbHandle,
-               crl_db = CRLDbHandle,
-               session_cache = CacheHandle,
-               private_key = Key,
-	      diffie_hellman_params = DHParams,
-	      ssl_options = NewOptions,
-	      sni_hostname = Hostname
-	     }
+               static_env = InitStatEnv0#static_env{
+                                        file_ref_db = FileRefHandle,
+                                        cert_db_ref = Ref,
+                                        cert_db = CertDbHandle,
+                                        crl_db = CRLDbHandle,
+                                        session_cache = CacheHandle
+                             },
+               connection_env = CEnv#connection_env{private_key = Key},
+               ssl_options = NewOptions,
+               handshake_env = HsEnv#handshake_env{sni_hostname = Hostname,
+                                                   diffie_hellman_params = DHParams}
+              }
     end.
 
 update_ssl_options_from_sni(OrigSSLOptions, SNIHostname) ->
@@ -2713,14 +3000,3 @@ new_emulated([], EmOpts) ->
     EmOpts;
 new_emulated(NewEmOpts, _) ->
     NewEmOpts.
-
-stop(Reason, State) ->
-    {stop, Reason, State}.
-
-stop_and_reply(Reason, Replies, State) ->
-    {stop_and_reply, Reason, Replies, State}.
-
-is_dist_up(#{dist_handle := Handle}) when Handle =/= undefined ->
-    true;
-is_dist_up(_) ->
-    false.
diff --git a/lib/ssl/src/ssl_connection.hrl b/lib/ssl/src/ssl_connection.hrl
index 66e3182313..ff7207a8ce 100644
--- a/lib/ssl/src/ssl_connection.hrl
+++ b/lib/ssl/src/ssl_connection.hrl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2013-2018. All Rights Reserved.
+%% Copyright Ericsson AB 2013-2019. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -33,74 +33,151 @@
 -include("ssl_cipher.hrl").
 -include_lib("public_key/include/public_key.hrl").
 
+-record(static_env, {
+                     role                  :: client | server,
+                     transport_cb          :: atom(),   % callback module
+                     protocol_cb           :: tls_connection | dtls_connection,
+                     data_tag              :: atom(),   % ex tcp.
+                     close_tag             :: atom(),   % ex tcp_closed
+                     error_tag             :: atom(),   % ex tcp_error
+                     passive_tag           :: atom(),   % ex tcp_passive
+                     host                  :: string() | inet:ip_address(),
+                     port                  :: integer(),
+                     socket                :: port() | tuple(), %% TODO: dtls socket
+                     cert_db               :: reference() | 'undefined',
+                     session_cache         :: db_handle(),
+                     session_cache_cb      :: atom(),
+                     crl_db                :: term(),
+                     file_ref_db          :: db_handle(),
+                     cert_db_ref          :: certdb_ref() | 'undefined',
+                     tracker              :: pid() | 'undefined' %% Tracker process for listen socket
+                    }).
+
+-record(handshake_env, {
+                        client_hello_version  :: ssl_record:ssl_version() | 'undefined',
+                        unprocessed_handshake_events = 0    :: integer(),
+                        tls_handshake_history :: ssl_handshake:ssl_handshake_history() | secret_printout()
+                                               | 'undefined',
+                        expecting_finished =                  false ::boolean(),
+                        renegotiation        :: undefined | {boolean(), From::term() | internal | peer},
+                        allow_renegotiate = true                    ::boolean(),
+                        %% Ext handling
+                        hello,                %%:: #client_hello{} | #server_hello{}            
+                        sni_hostname = undefined,
+                        expecting_next_protocol_negotiation = false ::boolean(),
+                        next_protocol = undefined                   :: undefined | binary(),
+                        negotiated_protocol,
+                        hashsign_algorithm = {undefined, undefined},
+                        cert_hashsign_algorithm = {undefined, undefined},
+                        %% key exchange
+                        kex_algorithm         :: ssl:kex_algo(),  
+                        kex_keys  :: {PublicKey :: binary(), PrivateKey :: binary()} | #'ECPrivateKey'{} |  undefined |  secret_printout(),        
+                        diffie_hellman_params:: #'DHParameter'{} | undefined | secret_printout(),
+                        srp_params           :: #srp_user{} | secret_printout() | 'undefined',
+                        public_key_info      :: ssl_handshake:public_key_info() | 'undefined',
+                        premaster_secret     :: binary() | secret_printout() | 'undefined',
+                        server_psk_identity         :: binary() | 'undefined' % server psk identity hint
+                       }).
+
+-record(connection_env, { 
+                          user_application      :: {Monitor::reference(), User::pid()},
+                          downgrade,
+                          terminated = false                          ::boolean() | closed,  
+                          negotiated_version    :: ssl_record:ssl_version() | 'undefined',
+                          erl_dist_handle = undefined :: erlang:dist_handle() | 'undefined',
+                          private_key          :: public_key:private_key() | secret_printout() | 'undefined'
+                        }).
+
 -record(state, {
-          role                  :: client | server,
-	  user_application      :: {Monitor::reference(), User::pid()},
-          transport_cb          :: atom(),   % callback module
-	  protocol_cb           :: tls_connection | dtls_connection,
-          data_tag              :: atom(),   % ex tcp.
-	  close_tag             :: atom(),   % ex tcp_closed
-	  error_tag             :: atom(),   % ex tcp_error
-          host                  :: string() | inet:ip_address(),
-          port                  :: integer(),
-          socket                :: port() | tuple(), %% TODO: dtls socket
-          sender                :: pid() | undefined,
-          ssl_options           :: #ssl_options{},
-          socket_options        :: #socket_options{},
-          connection_states     :: ssl_record:connection_states() | secret_printout(),
-	  protocol_buffers      :: term() | secret_printout() , %% #protocol_buffers{} from tls_record.hrl or dtls_recor.hrl
-	  unprocessed_handshake_events = 0    :: integer(),
-          tls_handshake_history :: ssl_handshake:ssl_handshake_history() | secret_printout()
-                                 | 'undefined',
-	  cert_db               :: reference() | 'undefined',
-          session               :: #session{} | secret_printout(),
-	  session_cache         :: db_handle(),
-	  session_cache_cb      :: atom(),
-	  crl_db                :: term(), 
-          negotiated_version    :: ssl_record:ssl_version() | 'undefined',
-          client_hello_version  :: ssl_record:ssl_version() | 'undefined',
-          client_certificate_requested = false :: boolean(),
-	  key_algorithm         :: ssl_cipher_format:key_algo(),
-	  hashsign_algorithm = {undefined, undefined},
-	  cert_hashsign_algorithm = {undefined, undefined},
-          public_key_info      :: ssl_handshake:public_key_info() | 'undefined',
-          private_key          :: public_key:private_key() | secret_printout() | 'undefined',
-	  diffie_hellman_params:: #'DHParameter'{} | undefined | secret_printout(),
-	  diffie_hellman_keys  :: {PublicKey :: binary(), PrivateKey :: binary()} | #'ECPrivateKey'{} |  undefined |  secret_printout(),  
-	  psk_identity         :: binary() | 'undefined', % server psk identity hint
-	  srp_params           :: #srp_user{} | secret_printout() | 'undefined',
-	  srp_keys             ::{PublicKey :: binary(), PrivateKey :: binary()} | secret_printout() | 'undefined',
-          premaster_secret     :: binary() | secret_printout() | 'undefined',
-	  file_ref_db          :: db_handle(),
-          cert_db_ref          :: certdb_ref() | 'undefined',
-          bytes_to_read        :: undefined | integer(), %% bytes to read in passive mode
-          user_data_buffer     :: undefined | binary() | secret_printout(), 
-          erl_dist_data = #{} :: map(),
-	  renegotiation        :: undefined | {boolean(), From::term() | internal | peer},
-	  start_or_recv_from   :: term(),
-	  timer                :: undefined | reference(), % start_or_recive_timer
-          %%send_queue           :: queue:queue(),
-          hello,                %%:: #client_hello{} | #server_hello{}, 
-	  terminated = false                          ::boolean(),
-	  allow_renegotiate = true                    ::boolean(),
-          expecting_next_protocol_negotiation = false ::boolean(),
-	  expecting_finished =                  false ::boolean(),
-          next_protocol = undefined                   :: undefined | binary(),
-	  negotiated_protocol,
-	  tracker              :: pid() | 'undefined', %% Tracker process for listen socket
-	  sni_hostname = undefined,
-	  downgrade,
-	  flight_buffer = []   :: list() | map(),  %% Buffer of TLS/DTLS records, used during the TLS handshake
-          %% to when possible pack more than one TLS record into the 
-          %% underlaying packet format. Introduced by DTLS - RFC 4347.
-          %% The mecahnism is also usefull in TLS although we do not
-          %% need to worry about packet loss in TLS. In DTLS we need to track DTLS handshake seqnr
-          flight_state = reliable,  %% reliable | {retransmit, integer()}| {waiting, ref(), integer()} - last two is used in DTLS over udp.   
-          protocol_specific = #{}      :: map()                    
-	 }).
+                static_env            :: #static_env{},
+                connection_env        :: #connection_env{} | secret_printout(),
+                ssl_options           :: #ssl_options{},
+                socket_options        :: #socket_options{},
+
+                %% Hanshake %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+                handshake_env         :: #handshake_env{} | secret_printout(),
+                %% Buffer of TLS/DTLS records, used during the TLS
+                %% handshake to when possible pack more than one TLS
+                %% record into the underlaying packet
+                %% format. Introduced by DTLS - RFC 4347.  The
+                %% mecahnism is also usefull in TLS although we do not
+                %% need to worry about packet loss in TLS. In DTLS we
+                %% need to track DTLS handshake seqnr
+                flight_buffer = []   :: list() | map(),  
+                client_certificate_requested = false :: boolean(),
+                protocol_specific = #{}      :: map(),
+                session               :: #session{} | secret_printout(),
+                key_share,
+                %% Data shuffling %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+                connection_states     :: ssl_record:connection_states() | secret_printout(),
+                protocol_buffers      :: term() | secret_printout() , %% #protocol_buffers{} from tls_record.hrl or dtls_recor.hr
+                user_data_buffer     :: undefined | {[binary()],non_neg_integer(),[binary()]} | secret_printout(),
+                bytes_to_read        :: undefined | integer(), %% bytes to read in passive mode
+                %% recv and start handling
+                start_or_recv_from   :: term(),
+                log_level
+               }).
+
 -define(DEFAULT_DIFFIE_HELLMAN_PARAMS,
 	#'DHParameter'{prime = ?DEFAULT_DIFFIE_HELLMAN_PRIME,
 		       base = ?DEFAULT_DIFFIE_HELLMAN_GENERATOR}).
 -define(WAIT_TO_ALLOW_RENEGOTIATION, 12000).
 
+
+%%----------------------------------------------------------------------
+%% TLS 1.3
+%%----------------------------------------------------------------------
+
+%% TLS 1.3 uses the same state record with the following differences:
+%%
+%% state :: record()
+%%
+%%   session_cache                - not implemented
+%%   session_cache_cb             - not implemented
+%%   crl_db                       - not implemented
+%%   client_hello_version         - Bleichenbacher mitigation in TLS 1.2
+%%   client_certificate_requested - Built into TLS 1.3 state machine
+%%   key_algorithm                - not used
+%%   diffie_hellman_params        - used in TLS 1.2 ECDH key exchange
+%%   diffie_hellman_keys          - used in TLS 1.2 ECDH key exchange
+%%   psk_identity                 - not used
+%%   srp_params                   - not used, no srp extension in TLS 1.3
+%%   srp_keys                     - not used, no srp extension in TLS 1.3
+%%   premaster_secret             - not used
+%%   renegotiation                - TLS 1.3 forbids renegotiation
+%%   hello                        - used in user_hello, handshake continue
+%%   allow_renegotiate            - TLS 1.3 forbids renegotiation
+%%   expecting_next_protocol_negotiation - ALPN replaced NPN, depricated in TLS 1.3
+%%   expecting_finished           - not implemented, used by abbreviated
+%%   next_protocol                - ALPN replaced NPN, depricated in TLS 1.3
+%%
+%% connection_state :: map()
+%%
+%%   compression_state            - not used
+%%   mac_secret                   - not used
+%%   sequence_number              - not used
+%%   secure_renegotiation         - not used, no renegotiation_info in TLS 1.3
+%%   client_verify_data           - not used, no renegotiation_info in TLS 1.3
+%%   server_verify_data           - not used, no renegotiation_info in TLS 1.3
+%%   beast_mitigation             - not used
+%%
+%% security_parameters :: map()
+%%
+%%   cipher_type                  - TLS 1.3 uses only AEAD ciphers
+%%   iv_size                      - not used
+%%   key_size                     - not used
+%%   key_material_length          - not used
+%%   expanded_key_material_length - used in SSL 3.0
+%%   mac_algorithm                - not used
+%%   prf_algorithm                - not used
+%%   hash_size                    - not used
+%%   compression_algorithm        - not used
+%%   master_secret                - used for multiple secret types in TLS 1.3
+%%   client_random                - not used
+%%   server_random                - not used
+%%   exportable                   - not used
+%%
+%% cipher_state :: record()
+%%   nonce - used for sequence_number
+
 -endif. % -ifdef(ssl_connection).
diff --git a/lib/ssl/src/ssl_crl_cache.erl b/lib/ssl/src/ssl_crl_cache.erl
index 9c1af86eeb..841620ce57 100644
--- a/lib/ssl/src/ssl_crl_cache.erl
+++ b/lib/ssl/src/ssl_crl_cache.erl
@@ -28,6 +28,10 @@
 
 -behaviour(ssl_crl_cache_api).
 
+-export_type([crl_src/0, uri/0]).
+-type crl_src() :: {file, file:filename()} | {der,  public_key:der_encoded()}.
+-type uri()     :: uri_string:uri_string().
+
 -export([lookup/3, select/2, fresh_crl/2]).
 -export([insert/1, insert/2, delete/1]).
 
diff --git a/lib/ssl/src/ssl_crl_cache_api.erl b/lib/ssl/src/ssl_crl_cache_api.erl
index d5380583e7..8a750b3929 100644
--- a/lib/ssl/src/ssl_crl_cache_api.erl
+++ b/lib/ssl/src/ssl_crl_cache_api.erl
@@ -21,12 +21,15 @@
 %%
 
 -module(ssl_crl_cache_api).
-
 -include_lib("public_key/include/public_key.hrl"). 
 
--type db_handle() :: term().
--type issuer_name() :: {rdnSequence, [#'AttributeTypeAndValue'{}]}.
+-export_type([dist_point/0, crl_cache_ref/0]).
+
+-type crl_cache_ref() :: any().
+-type issuer_name() ::  {rdnSequence,[#'AttributeTypeAndValue'{}]}.
+-type dist_point()  :: #'DistributionPoint'{}.
 
--callback lookup(#'DistributionPoint'{}, issuer_name(), db_handle()) -> not_available | [public_key:der_encoded()].
--callback select(issuer_name(), db_handle()) ->  [public_key:der_encoded()].
--callback fresh_crl(#'DistributionPoint'{}, public_key:der_encoded()) -> public_key:der_encoded().
+  
+-callback lookup(dist_point(), issuer_name(), crl_cache_ref()) -> not_available | [public_key:der_encoded()].
+-callback select(issuer_name(), crl_cache_ref()) ->  [public_key:der_encoded()].
+-callback fresh_crl(dist_point(), public_key:der_encoded()) -> public_key:der_encoded().
diff --git a/lib/ssl/src/ssl_crl_hash_dir.erl b/lib/ssl/src/ssl_crl_hash_dir.erl
index bb62737232..9478ff9b78 100644
--- a/lib/ssl/src/ssl_crl_hash_dir.erl
+++ b/lib/ssl/src/ssl_crl_hash_dir.erl
@@ -20,6 +20,7 @@
 -module(ssl_crl_hash_dir).
 
 -include_lib("public_key/include/public_key.hrl").
+-include_lib("kernel/include/logger.hrl").
 
 -behaviour(ssl_crl_cache_api).
 
@@ -55,7 +56,7 @@ select(Issuer, {_DbHandle, [{dir, Dir}]}) ->
             %% is happy with that, but if it's true, this is an error.
             [];
         {error, Error} ->
-            error_logger:error_report(
+            ?LOG_ERROR(
               [{cannot_find_crl, Error},
                {dir, Dir},
                {module, ?MODULE},
@@ -86,7 +87,7 @@ find_crls(Issuer, Hash, Dir, N, Acc) ->
 		error:Error ->
 		    %% Something is wrong with the file.  Report
 		    %% it, and try the next one.
-		    error_logger:error_report(
+		    ?LOG_ERROR(
 		      [{crl_parse_error, Error},
 		       {filename, Filename},
 		       {module, ?MODULE},
diff --git a/lib/ssl/src/ssl_dh_groups.erl b/lib/ssl/src/ssl_dh_groups.erl
new file mode 100644
index 0000000000..20d53de430
--- /dev/null
+++ b/lib/ssl/src/ssl_dh_groups.erl
@@ -0,0 +1,467 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2007-2018. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+-module(ssl_dh_groups).
+
+-include_lib("public_key/include/public_key.hrl").
+
+-export([modp2048_generator/0, modp2048_prime/0,
+         ffdhe2048_generator/0, ffdhe2048_prime/0,
+         ffdhe3072_generator/0, ffdhe3072_prime/0,
+         ffdhe4096_generator/0, ffdhe4096_prime/0,
+         ffdhe6144_generator/0, ffdhe6144_prime/0,
+         ffdhe8192_generator/0, ffdhe8192_prime/0,
+         dh_params/1]).
+
+%% RFC3526 - 2048-bit MODP Group
+%% This group is assigned id 14.
+%%
+%%    This prime is: 2^2048 - 2^1984 - 1 + 2^64 * { [2^1918 pi] + 124476 }
+%%
+%%    Its hexadecimal value is:
+%%
+%%       FFFFFFFF FFFFFFFF C90FDAA2 2168C234 C4C6628B 80DC1CD1
+%%       29024E08 8A67CC74 020BBEA6 3B139B22 514A0879 8E3404DD
+%%       EF9519B3 CD3A431B 302B0A6D F25F1437 4FE1356D 6D51C245
+%%       E485B576 625E7EC6 F44C42E9 A637ED6B 0BFF5CB6 F406B7ED
+%%       EE386BFB 5A899FA5 AE9F2411 7C4B1FE6 49286651 ECE45B3D
+%%       C2007CB8 A163BF05 98DA4836 1C55D39A 69163FA8 FD24CF5F
+%%       83655D23 DCA3AD96 1C62F356 208552BB 9ED52907 7096966D
+%%       670C354E 4ABC9804 F1746C08 CA18217C 32905E46 2E36CE3B
+%%       E39E772C 180E8603 9B2783A2 EC07A28F B5C55DF0 6F4C52C9
+%%       DE2BCBF6 95581718 3995497C EA956AE5 15D22618 98FA0510
+%%       15728E5A 8AACAA68 FFFFFFFF FFFFFFFF
+%%
+%%    The generator is: 2.
+modp2048_generator() ->
+    2.
+
+modp2048_prime() ->
+    P = "FFFFFFFF" "FFFFFFFF" "C90FDAA2" "2168C234" "C4C6628B" "80DC1CD1"
+        "29024E08" "8A67CC74" "020BBEA6" "3B139B22" "514A0879" "8E3404DD"
+        "EF9519B3" "CD3A431B" "302B0A6D" "F25F1437" "4FE1356D" "6D51C245"
+        "E485B576" "625E7EC6" "F44C42E9" "A637ED6B" "0BFF5CB6" "F406B7ED"
+        "EE386BFB" "5A899FA5" "AE9F2411" "7C4B1FE6" "49286651" "ECE45B3D"
+        "C2007CB8" "A163BF05" "98DA4836" "1C55D39A" "69163FA8" "FD24CF5F"
+        "83655D23" "DCA3AD96" "1C62F356" "208552BB" "9ED52907" "7096966D"
+        "670C354E" "4ABC9804" "F1746C08" "CA18217C" "32905E46" "2E36CE3B"
+        "E39E772C" "180E8603" "9B2783A2" "EC07A28F" "B5C55DF0" "6F4C52C9"
+        "DE2BCBF6" "95581718" "3995497C" "EA956AE5" "15D22618" "98FA0510"
+        "15728E5A" "8AACAA68" "FFFFFFFF" "FFFFFFFF",
+    list_to_integer(P, 16).
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%% RFC8446 - TLS 1.3
+%%% RFC7919 - Negotiated FFDHE for TLS
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+%% ffdhe2048
+%% ---------
+%% The 2048-bit group has registry value 256 and is calculated from the
+%% following formula:
+%%
+%%   The modulus is:
+%%
+%%     p = 2^2048 - 2^1984 + {[2^1918 * e] + 560316 } * 2^64 - 1
+%%
+%%   The hexadecimal representation of p is:
+%%
+%%     FFFFFFFF FFFFFFFF ADF85458 A2BB4A9A AFDC5620 273D3CF1
+%%     D8B9C583 CE2D3695 A9E13641 146433FB CC939DCE 249B3EF9
+%%     7D2FE363 630C75D8 F681B202 AEC4617A D3DF1ED5 D5FD6561
+%%     2433F51F 5F066ED0 85636555 3DED1AF3 B557135E 7F57C935
+%%     984F0C70 E0E68B77 E2A689DA F3EFE872 1DF158A1 36ADE735
+%%     30ACCA4F 483A797A BC0AB182 B324FB61 D108A94B B2C8E3FB
+%%     B96ADAB7 60D7F468 1D4F42A3 DE394DF4 AE56EDE7 6372BB19
+%%     0B07A7C8 EE0A6D70 9E02FCE1 CDF7E2EC C03404CD 28342F61
+%%     9172FE9C E98583FF 8E4F1232 EEF28183 C3FE3B1B 4C6FAD73
+%%     3BB5FCBC 2EC22005 C58EF183 7D1683B2 C6F34A26 C1B2EFFA
+%%     886B4238 61285C97 FFFFFFFF FFFFFFFF
+%%
+%%   The generator is: g = 2
+%%
+%%   The group size is: q = (p-1)/2
+%%
+%% The estimated symmetric-equivalent strength of this group is 103
+%% bits.
+ffdhe2048_generator() ->
+    2.
+
+ffdhe2048_prime() ->
+    P = "FFFFFFFF" "FFFFFFFF" "ADF85458" "A2BB4A9A" "AFDC5620" "273D3CF1"
+        "D8B9C583" "CE2D3695" "A9E13641" "146433FB" "CC939DCE" "249B3EF9"
+        "7D2FE363" "630C75D8" "F681B202" "AEC4617A" "D3DF1ED5" "D5FD6561"
+        "2433F51F" "5F066ED0" "85636555" "3DED1AF3" "B557135E" "7F57C935"
+        "984F0C70" "E0E68B77" "E2A689DA" "F3EFE872" "1DF158A1" "36ADE735"
+        "30ACCA4F" "483A797A" "BC0AB182" "B324FB61" "D108A94B" "B2C8E3FB"
+        "B96ADAB7" "60D7F468" "1D4F42A3" "DE394DF4" "AE56EDE7" "6372BB19"
+        "0B07A7C8" "EE0A6D70" "9E02FCE1" "CDF7E2EC" "C03404CD" "28342F61"
+        "9172FE9C" "E98583FF" "8E4F1232" "EEF28183" "C3FE3B1B" "4C6FAD73"
+        "3BB5FCBC" "2EC22005" "C58EF183" "7D1683B2" "C6F34A26" "C1B2EFFA"
+        "886B4238" "61285C97" "FFFFFFFF" "FFFFFFFF",
+    list_to_integer(P, 16).
+
+
+%% ffdhe3072
+%% ---------
+%% The 3072-bit prime has registry value 257 and is calculated from the
+%% following formula:
+%%
+%%   The modulus is:
+%%
+%%     p = 2^3072 - 2^3008 + {[2^2942 * e] + 2625351} * 2^64 - 1
+%%
+%%   The hexadecimal representation of p is:
+%%
+%%     FFFFFFFF FFFFFFFF ADF85458 A2BB4A9A AFDC5620 273D3CF1
+%%     D8B9C583 CE2D3695 A9E13641 146433FB CC939DCE 249B3EF9
+%%     7D2FE363 630C75D8 F681B202 AEC4617A D3DF1ED5 D5FD6561
+%%     2433F51F 5F066ED0 85636555 3DED1AF3 B557135E 7F57C935
+%%     984F0C70 E0E68B77 E2A689DA F3EFE872 1DF158A1 36ADE735
+%%     30ACCA4F 483A797A BC0AB182 B324FB61 D108A94B B2C8E3FB
+%%     B96ADAB7 60D7F468 1D4F42A3 DE394DF4 AE56EDE7 6372BB19
+%%     0B07A7C8 EE0A6D70 9E02FCE1 CDF7E2EC C03404CD 28342F61
+%%     9172FE9C E98583FF 8E4F1232 EEF28183 C3FE3B1B 4C6FAD73
+%%     3BB5FCBC 2EC22005 C58EF183 7D1683B2 C6F34A26 C1B2EFFA
+%%     886B4238 611FCFDC DE355B3B 6519035B BC34F4DE F99C0238
+%%     61B46FC9 D6E6C907 7AD91D26 91F7F7EE 598CB0FA C186D91C
+%%     AEFE1309 85139270 B4130C93 BC437944 F4FD4452 E2D74DD3
+%%     64F2E21E 71F54BFF 5CAE82AB 9C9DF69E E86D2BC5 22363A0D
+%%     ABC52197 9B0DEADA 1DBF9A42 D5C4484E 0ABCD06B FA53DDEF
+%%     3C1B20EE 3FD59D7C 25E41D2B 66C62E37 FFFFFFFF FFFFFFFF
+%%
+%%   The generator is: g = 2
+%%
+%%   The group size is: q = (p-1)/2
+%%
+%% The estimated symmetric-equivalent strength of this group is 125
+%% bits.
+ffdhe3072_generator() ->
+    2.
+
+ffdhe3072_prime() ->
+    P = "FFFFFFFF" "FFFFFFFF" "ADF85458" "A2BB4A9A" "AFDC5620" "273D3CF1"
+        "D8B9C583" "CE2D3695" "A9E13641" "146433FB" "CC939DCE" "249B3EF9"
+        "7D2FE363" "630C75D8" "F681B202" "AEC4617A" "D3DF1ED5" "D5FD6561"
+        "2433F51F" "5F066ED0" "85636555" "3DED1AF3" "B557135E" "7F57C935"
+        "984F0C70" "E0E68B77" "E2A689DA" "F3EFE872" "1DF158A1" "36ADE735"
+        "30ACCA4F" "483A797A" "BC0AB182" "B324FB61" "D108A94B" "B2C8E3FB"
+        "B96ADAB7" "60D7F468" "1D4F42A3" "DE394DF4" "AE56EDE7" "6372BB19"
+        "0B07A7C8" "EE0A6D70" "9E02FCE1" "CDF7E2EC" "C03404CD" "28342F61"
+        "9172FE9C" "E98583FF" "8E4F1232" "EEF28183" "C3FE3B1B" "4C6FAD73"
+        "3BB5FCBC" "2EC22005" "C58EF183" "7D1683B2" "C6F34A26" "C1B2EFFA"
+        "886B4238" "611FCFDC" "DE355B3B" "6519035B" "BC34F4DE" "F99C0238"
+        "61B46FC9" "D6E6C907" "7AD91D26" "91F7F7EE" "598CB0FA" "C186D91C"
+        "AEFE1309" "85139270" "B4130C93" "BC437944" "F4FD4452" "E2D74DD3"
+        "64F2E21E" "71F54BFF" "5CAE82AB" "9C9DF69E" "E86D2BC5" "22363A0D"
+        "ABC52197" "9B0DEADA" "1DBF9A42" "D5C4484E" "0ABCD06B" "FA53DDEF"
+        "3C1B20EE" "3FD59D7C" "25E41D2B" "66C62E37" "FFFFFFFF" "FFFFFFFF",
+    list_to_integer(P, 16).
+
+
+%% ffdhe4096
+%% ---------
+%% The 4096-bit group has registry value 258 and is calculated from the
+%% following formula:
+%%
+%%   The modulus is:
+%%
+%%     p = 2^4096 - 2^4032 + {[2^3966 * e] + 5736041} * 2^64 - 1
+%%
+%%   The hexadecimal representation of p is:
+%%
+%%     FFFFFFFF FFFFFFFF ADF85458 A2BB4A9A AFDC5620 273D3CF1
+%%     D8B9C583 CE2D3695 A9E13641 146433FB CC939DCE 249B3EF9
+%%     7D2FE363 630C75D8 F681B202 AEC4617A D3DF1ED5 D5FD6561
+%%     2433F51F 5F066ED0 85636555 3DED1AF3 B557135E 7F57C935
+%%     984F0C70 E0E68B77 E2A689DA F3EFE872 1DF158A1 36ADE735
+%%     30ACCA4F 483A797A BC0AB182 B324FB61 D108A94B B2C8E3FB
+%%     B96ADAB7 60D7F468 1D4F42A3 DE394DF4 AE56EDE7 6372BB19
+%%     0B07A7C8 EE0A6D70 9E02FCE1 CDF7E2EC C03404CD 28342F61
+%%     9172FE9C E98583FF 8E4F1232 EEF28183 C3FE3B1B 4C6FAD73
+%%     3BB5FCBC 2EC22005 C58EF183 7D1683B2 C6F34A26 C1B2EFFA
+%%     886B4238 611FCFDC DE355B3B 6519035B BC34F4DE F99C0238
+%%     61B46FC9 D6E6C907 7AD91D26 91F7F7EE 598CB0FA C186D91C
+%%     AEFE1309 85139270 B4130C93 BC437944 F4FD4452 E2D74DD3
+%%     64F2E21E 71F54BFF 5CAE82AB 9C9DF69E E86D2BC5 22363A0D
+%%     ABC52197 9B0DEADA 1DBF9A42 D5C4484E 0ABCD06B FA53DDEF
+%%     3C1B20EE 3FD59D7C 25E41D2B 669E1EF1 6E6F52C3 164DF4FB
+%%     7930E9E4 E58857B6 AC7D5F42 D69F6D18 7763CF1D 55034004
+%%     87F55BA5 7E31CC7A 7135C886 EFB4318A ED6A1E01 2D9E6832
+%%     A907600A 918130C4 6DC778F9 71AD0038 092999A3 33CB8B7A
+%%     1A1DB93D 7140003C 2A4ECEA9 F98D0ACC 0A8291CD CEC97DCF
+%%     8EC9B55A 7F88A46B 4DB5A851 F44182E1 C68A007E 5E655F6A
+%%     FFFFFFFF FFFFFFFF
+%%
+%%   The generator is: g = 2
+%%
+%%   The group size is: q = (p-1)/2
+%%
+%% The estimated symmetric-equivalent strength of this group is 150
+%% bits.
+ffdhe4096_generator() ->
+    2.
+
+ffdhe4096_prime() ->
+    P = "FFFFFFFF" "FFFFFFFF" "ADF85458" "A2BB4A9A" "AFDC5620" "273D3CF1"
+        "D8B9C583" "CE2D3695" "A9E13641" "146433FB" "CC939DCE" "249B3EF9"
+        "7D2FE363" "630C75D8" "F681B202" "AEC4617A" "D3DF1ED5" "D5FD6561"
+        "2433F51F" "5F066ED0" "85636555" "3DED1AF3" "B557135E" "7F57C935"
+        "984F0C70" "E0E68B77" "E2A689DA" "F3EFE872" "1DF158A1" "36ADE735"
+        "30ACCA4F" "483A797A" "BC0AB182" "B324FB61" "D108A94B" "B2C8E3FB"
+        "B96ADAB7" "60D7F468" "1D4F42A3" "DE394DF4" "AE56EDE7" "6372BB19"
+        "0B07A7C8" "EE0A6D70" "9E02FCE1" "CDF7E2EC" "C03404CD" "28342F61"
+        "9172FE9C" "E98583FF" "8E4F1232" "EEF28183" "C3FE3B1B" "4C6FAD73"
+        "3BB5FCBC" "2EC22005" "C58EF183" "7D1683B2" "C6F34A26" "C1B2EFFA"
+        "886B4238" "611FCFDC" "DE355B3B" "6519035B" "BC34F4DE" "F99C0238"
+        "61B46FC9" "D6E6C907" "7AD91D26" "91F7F7EE" "598CB0FA" "C186D91C"
+        "AEFE1309" "85139270" "B4130C93" "BC437944" "F4FD4452" "E2D74DD3"
+        "64F2E21E" "71F54BFF" "5CAE82AB" "9C9DF69E" "E86D2BC5" "22363A0D"
+        "ABC52197" "9B0DEADA" "1DBF9A42" "D5C4484E" "0ABCD06B" "FA53DDEF"
+        "3C1B20EE" "3FD59D7C" "25E41D2B" "669E1EF1" "6E6F52C3" "164DF4FB"
+        "7930E9E4" "E58857B6" "AC7D5F42" "D69F6D18" "7763CF1D" "55034004"
+        "87F55BA5" "7E31CC7A" "7135C886" "EFB4318A" "ED6A1E01" "2D9E6832"
+        "A907600A" "918130C4" "6DC778F9" "71AD0038" "092999A3" "33CB8B7A"
+        "1A1DB93D" "7140003C" "2A4ECEA9" "F98D0ACC" "0A8291CD" "CEC97DCF"
+        "8EC9B55A" "7F88A46B" "4DB5A851" "F44182E1" "C68A007E" "5E655F6A"
+        "FFFFFFFF" "FFFFFFFF",
+    list_to_integer(P, 16).
+
+
+%% ffdhe6144
+%% ---------
+%% The 6144-bit group has registry value 259 and is calculated from the
+%% following formula:
+%%
+%%   The modulus is:
+%%
+%%     p = 2^6144 - 2^6080 + {[2^6014 * e] + 15705020} * 2^64 - 1
+%%
+%%   The hexadecimal representation of p is:
+%%
+%%     FFFFFFFF FFFFFFFF ADF85458 A2BB4A9A AFDC5620 273D3CF1
+%%     D8B9C583 CE2D3695 A9E13641 146433FB CC939DCE 249B3EF9
+%%     7D2FE363 630C75D8 F681B202 AEC4617A D3DF1ED5 D5FD6561
+%%     2433F51F 5F066ED0 85636555 3DED1AF3 B557135E 7F57C935
+%%     984F0C70 E0E68B77 E2A689DA F3EFE872 1DF158A1 36ADE735
+%%     30ACCA4F 483A797A BC0AB182 B324FB61 D108A94B B2C8E3FB
+%%     B96ADAB7 60D7F468 1D4F42A3 DE394DF4 AE56EDE7 6372BB19
+%%     0B07A7C8 EE0A6D70 9E02FCE1 CDF7E2EC C03404CD 28342F61
+%%     9172FE9C E98583FF 8E4F1232 EEF28183 C3FE3B1B 4C6FAD73
+%%     3BB5FCBC 2EC22005 C58EF183 7D1683B2 C6F34A26 C1B2EFFA
+%%     886B4238 611FCFDC DE355B3B 6519035B BC34F4DE F99C0238
+%%     61B46FC9 D6E6C907 7AD91D26 91F7F7EE 598CB0FA C186D91C
+%%     AEFE1309 85139270 B4130C93 BC437944 F4FD4452 E2D74DD3
+%%     64F2E21E 71F54BFF 5CAE82AB 9C9DF69E E86D2BC5 22363A0D
+%%     ABC52197 9B0DEADA 1DBF9A42 D5C4484E 0ABCD06B FA53DDEF
+%%     3C1B20EE 3FD59D7C 25E41D2B 669E1EF1 6E6F52C3 164DF4FB
+%%     7930E9E4 E58857B6 AC7D5F42 D69F6D18 7763CF1D 55034004
+%%     87F55BA5 7E31CC7A 7135C886 EFB4318A ED6A1E01 2D9E6832
+%%     A907600A 918130C4 6DC778F9 71AD0038 092999A3 33CB8B7A
+%%     1A1DB93D 7140003C 2A4ECEA9 F98D0ACC 0A8291CD CEC97DCF
+%%     8EC9B55A 7F88A46B 4DB5A851 F44182E1 C68A007E 5E0DD902
+%%     0BFD64B6 45036C7A 4E677D2C 38532A3A 23BA4442 CAF53EA6
+%%     3BB45432 9B7624C8 917BDD64 B1C0FD4C B38E8C33 4C701C3A
+%%     CDAD0657 FCCFEC71 9B1F5C3E 4E46041F 388147FB 4CFDB477
+%%     A52471F7 A9A96910 B855322E DB6340D8 A00EF092 350511E3
+%%     0ABEC1FF F9E3A26E 7FB29F8C 183023C3 587E38DA 0077D9B4
+%%     763E4E4B 94B2BBC1 94C6651E 77CAF992 EEAAC023 2A281BF6
+%%     B3A739C1 22611682 0AE8DB58 47A67CBE F9C9091B 462D538C
+%%     D72B0374 6AE77F5E 62292C31 1562A846 505DC82D B854338A
+%%     E49F5235 C95B9117 8CCF2DD5 CACEF403 EC9D1810 C6272B04
+%%     5B3B71F9 DC6B80D6 3FDD4A8E 9ADB1E69 62A69526 D43161C1
+%%     A41D570D 7938DAD4 A40E329C D0E40E65 FFFFFFFF FFFFFFFF
+%%
+%%   The generator is: g = 2
+%%
+%%   The group size is: q = (p-1)/2
+%%
+%% The estimated symmetric-equivalent strength of this group is 175
+%% bits.
+ffdhe6144_generator() ->
+    2.
+
+ffdhe6144_prime() ->
+    P = "FFFFFFFF" "FFFFFFFF" "ADF85458" "A2BB4A9A" "AFDC5620" "273D3CF1"
+        "D8B9C583" "CE2D3695" "A9E13641" "146433FB" "CC939DCE" "249B3EF9"
+        "7D2FE363" "630C75D8" "F681B202" "AEC4617A" "D3DF1ED5" "D5FD6561"
+        "2433F51F" "5F066ED0" "85636555" "3DED1AF3" "B557135E" "7F57C935"
+        "984F0C70" "E0E68B77" "E2A689DA" "F3EFE872" "1DF158A1" "36ADE735"
+        "30ACCA4F" "483A797A" "BC0AB182" "B324FB61" "D108A94B" "B2C8E3FB"
+        "B96ADAB7" "60D7F468" "1D4F42A3" "DE394DF4" "AE56EDE7" "6372BB19"
+        "0B07A7C8" "EE0A6D70" "9E02FCE1" "CDF7E2EC" "C03404CD" "28342F61"
+        "9172FE9C" "E98583FF" "8E4F1232" "EEF28183" "C3FE3B1B" "4C6FAD73"
+        "3BB5FCBC" "2EC22005" "C58EF183" "7D1683B2" "C6F34A26" "C1B2EFFA"
+        "886B4238" "611FCFDC" "DE355B3B" "6519035B" "BC34F4DE" "F99C0238"
+        "61B46FC9" "D6E6C907" "7AD91D26" "91F7F7EE" "598CB0FA" "C186D91C"
+        "AEFE1309" "85139270" "B4130C93" "BC437944" "F4FD4452" "E2D74DD3"
+        "64F2E21E" "71F54BFF" "5CAE82AB" "9C9DF69E" "E86D2BC5" "22363A0D"
+        "ABC52197" "9B0DEADA" "1DBF9A42" "D5C4484E" "0ABCD06B" "FA53DDEF"
+        "3C1B20EE" "3FD59D7C" "25E41D2B" "669E1EF1" "6E6F52C3" "164DF4FB"
+        "7930E9E4" "E58857B6" "AC7D5F42" "D69F6D18" "7763CF1D" "55034004"
+        "87F55BA5" "7E31CC7A" "7135C886" "EFB4318A" "ED6A1E01" "2D9E6832"
+        "A907600A" "918130C4" "6DC778F9" "71AD0038" "092999A3" "33CB8B7A"
+        "1A1DB93D" "7140003C" "2A4ECEA9" "F98D0ACC" "0A8291CD" "CEC97DCF"
+        "8EC9B55A" "7F88A46B" "4DB5A851" "F44182E1" "C68A007E" "5E0DD902"
+        "0BFD64B6" "45036C7A" "4E677D2C" "38532A3A" "23BA4442" "CAF53EA6"
+        "3BB45432" "9B7624C8" "917BDD64" "B1C0FD4C" "B38E8C33" "4C701C3A"
+        "CDAD0657" "FCCFEC71" "9B1F5C3E" "4E46041F" "388147FB" "4CFDB477"
+        "A52471F7" "A9A96910" "B855322E" "DB6340D8" "A00EF092" "350511E3"
+        "0ABEC1FF" "F9E3A26E" "7FB29F8C" "183023C3" "587E38DA" "0077D9B4"
+        "763E4E4B" "94B2BBC1" "94C6651E" "77CAF992" "EEAAC023" "2A281BF6"
+        "B3A739C1" "22611682" "0AE8DB58" "47A67CBE" "F9C9091B" "462D538C"
+        "D72B0374" "6AE77F5E" "62292C31" "1562A846" "505DC82D" "B854338A"
+        "E49F5235" "C95B9117" "8CCF2DD5" "CACEF403" "EC9D1810" "C6272B04"
+        "5B3B71F9" "DC6B80D6" "3FDD4A8E" "9ADB1E69" "62A69526" "D43161C1"
+        "A41D570D" "7938DAD4" "A40E329C" "D0E40E65" "FFFFFFFF" "FFFFFFFF",
+    list_to_integer(P, 16).
+
+
+%% ffdhe8192
+%% ---------
+%% The 8192-bit group has registry value 260 and is calculated from the
+%% following formula:
+%%
+%%   The modulus is:
+%%
+%%     p = 2^8192 - 2^8128 + {[2^8062 * e] + 10965728} * 2^64 - 1
+%%
+%%   The hexadecimal representation of p is:
+%%
+%%     FFFFFFFF FFFFFFFF ADF85458 A2BB4A9A AFDC5620 273D3CF1
+%%     D8B9C583 CE2D3695 A9E13641 146433FB CC939DCE 249B3EF9
+%%     7D2FE363 630C75D8 F681B202 AEC4617A D3DF1ED5 D5FD6561
+%%     2433F51F 5F066ED0 85636555 3DED1AF3 B557135E 7F57C935
+%%     984F0C70 E0E68B77 E2A689DA F3EFE872 1DF158A1 36ADE735
+%%     30ACCA4F 483A797A BC0AB182 B324FB61 D108A94B B2C8E3FB
+%%     B96ADAB7 60D7F468 1D4F42A3 DE394DF4 AE56EDE7 6372BB19
+%%     0B07A7C8 EE0A6D70 9E02FCE1 CDF7E2EC C03404CD 28342F61
+%%     9172FE9C E98583FF 8E4F1232 EEF28183 C3FE3B1B 4C6FAD73
+%%     3BB5FCBC 2EC22005 C58EF183 7D1683B2 C6F34A26 C1B2EFFA
+%%     886B4238 611FCFDC DE355B3B 6519035B BC34F4DE F99C0238
+%%     61B46FC9 D6E6C907 7AD91D26 91F7F7EE 598CB0FA C186D91C
+%%     AEFE1309 85139270 B4130C93 BC437944 F4FD4452 E2D74DD3
+%%     64F2E21E 71F54BFF 5CAE82AB 9C9DF69E E86D2BC5 22363A0D
+%%     ABC52197 9B0DEADA 1DBF9A42 D5C4484E 0ABCD06B FA53DDEF
+%%     3C1B20EE 3FD59D7C 25E41D2B 669E1EF1 6E6F52C3 164DF4FB
+%%     7930E9E4 E58857B6 AC7D5F42 D69F6D18 7763CF1D 55034004
+%%     87F55BA5 7E31CC7A 7135C886 EFB4318A ED6A1E01 2D9E6832
+%%     A907600A 918130C4 6DC778F9 71AD0038 092999A3 33CB8B7A
+%%     1A1DB93D 7140003C 2A4ECEA9 F98D0ACC 0A8291CD CEC97DCF
+%%     8EC9B55A 7F88A46B 4DB5A851 F44182E1 C68A007E 5E0DD902
+%%     0BFD64B6 45036C7A 4E677D2C 38532A3A 23BA4442 CAF53EA6
+%%     3BB45432 9B7624C8 917BDD64 B1C0FD4C B38E8C33 4C701C3A
+%%     CDAD0657 FCCFEC71 9B1F5C3E 4E46041F 388147FB 4CFDB477
+%%     A52471F7 A9A96910 B855322E DB6340D8 A00EF092 350511E3
+%%     0ABEC1FF F9E3A26E 7FB29F8C 183023C3 587E38DA 0077D9B4
+%%     763E4E4B 94B2BBC1 94C6651E 77CAF992 EEAAC023 2A281BF6
+%%     B3A739C1 22611682 0AE8DB58 47A67CBE F9C9091B 462D538C
+%%     D72B0374 6AE77F5E 62292C31 1562A846 505DC82D B854338A
+%%     E49F5235 C95B9117 8CCF2DD5 CACEF403 EC9D1810 C6272B04
+%%     5B3B71F9 DC6B80D6 3FDD4A8E 9ADB1E69 62A69526 D43161C1
+%%     A41D570D 7938DAD4 A40E329C CFF46AAA 36AD004C F600C838
+%%     1E425A31 D951AE64 FDB23FCE C9509D43 687FEB69 EDD1CC5E
+%%     0B8CC3BD F64B10EF 86B63142 A3AB8829 555B2F74 7C932665
+%%     CB2C0F1C C01BD702 29388839 D2AF05E4 54504AC7 8B758282
+%%     2846C0BA 35C35F5C 59160CC0 46FD8251 541FC68C 9C86B022
+%%     BB709987 6A460E74 51A8A931 09703FEE 1C217E6C 3826E52C
+%%     51AA691E 0E423CFC 99E9E316 50C1217B 624816CD AD9A95F9
+%%     D5B80194 88D9C0A0 A1FE3075 A577E231 83F81D4A 3F2FA457
+%%     1EFC8CE0 BA8A4FE8 B6855DFE 72B0A66E DED2FBAB FBE58A30
+%%     FAFABE1C 5D71A87E 2F741EF8 C1FE86FE A6BBFDE5 30677F0D
+%%     97D11D49 F7A8443D 0822E506 A9F4614E 011E2A94 838FF88C
+%%     D68C8BB7 C5C6424C FFFFFFFF FFFFFFFF
+%%
+%%   The generator is: g = 2
+%%
+%%   The group size is: q = (p-1)/2
+%%
+%% The estimated symmetric-equivalent strength of this group is 192
+%% bits.
+ffdhe8192_generator() ->
+    2.
+
+ffdhe8192_prime() ->
+    P = "FFFFFFFF" "FFFFFFFF" "ADF85458" "A2BB4A9A" "AFDC5620" "273D3CF1"
+        "D8B9C583" "CE2D3695" "A9E13641" "146433FB" "CC939DCE" "249B3EF9"
+        "7D2FE363" "630C75D8" "F681B202" "AEC4617A" "D3DF1ED5" "D5FD6561"
+        "2433F51F" "5F066ED0" "85636555" "3DED1AF3" "B557135E" "7F57C935"
+        "984F0C70" "E0E68B77" "E2A689DA" "F3EFE872" "1DF158A1" "36ADE735"
+        "30ACCA4F" "483A797A" "BC0AB182" "B324FB61" "D108A94B" "B2C8E3FB"
+        "B96ADAB7" "60D7F468" "1D4F42A3" "DE394DF4" "AE56EDE7" "6372BB19"
+        "0B07A7C8" "EE0A6D70" "9E02FCE1" "CDF7E2EC" "C03404CD" "28342F61"
+        "9172FE9C" "E98583FF" "8E4F1232" "EEF28183" "C3FE3B1B" "4C6FAD73"
+        "3BB5FCBC" "2EC22005" "C58EF183" "7D1683B2" "C6F34A26" "C1B2EFFA"
+        "886B4238" "611FCFDC" "DE355B3B" "6519035B" "BC34F4DE" "F99C0238"
+        "61B46FC9" "D6E6C907" "7AD91D26" "91F7F7EE" "598CB0FA" "C186D91C"
+        "AEFE1309" "85139270" "B4130C93" "BC437944" "F4FD4452" "E2D74DD3"
+        "64F2E21E" "71F54BFF" "5CAE82AB" "9C9DF69E" "E86D2BC5" "22363A0D"
+        "ABC52197" "9B0DEADA" "1DBF9A42" "D5C4484E" "0ABCD06B" "FA53DDEF"
+        "3C1B20EE" "3FD59D7C" "25E41D2B" "669E1EF1" "6E6F52C3" "164DF4FB"
+        "7930E9E4" "E58857B6" "AC7D5F42" "D69F6D18" "7763CF1D" "55034004"
+        "87F55BA5" "7E31CC7A" "7135C886" "EFB4318A" "ED6A1E01" "2D9E6832"
+        "A907600A" "918130C4" "6DC778F9" "71AD0038" "092999A3" "33CB8B7A"
+        "1A1DB93D" "7140003C" "2A4ECEA9" "F98D0ACC" "0A8291CD" "CEC97DCF"
+        "8EC9B55A" "7F88A46B" "4DB5A851" "F44182E1" "C68A007E" "5E0DD902"
+        "0BFD64B6" "45036C7A" "4E677D2C" "38532A3A" "23BA4442" "CAF53EA6"
+        "3BB45432" "9B7624C8" "917BDD64" "B1C0FD4C" "B38E8C33" "4C701C3A"
+        "CDAD0657" "FCCFEC71" "9B1F5C3E" "4E46041F" "388147FB" "4CFDB477"
+        "A52471F7" "A9A96910" "B855322E" "DB6340D8" "A00EF092" "350511E3"
+        "0ABEC1FF" "F9E3A26E" "7FB29F8C" "183023C3" "587E38DA" "0077D9B4"
+        "763E4E4B" "94B2BBC1" "94C6651E" "77CAF992" "EEAAC023" "2A281BF6"
+        "B3A739C1" "22611682" "0AE8DB58" "47A67CBE" "F9C9091B" "462D538C"
+        "D72B0374" "6AE77F5E" "62292C31" "1562A846" "505DC82D" "B854338A"
+        "E49F5235" "C95B9117" "8CCF2DD5" "CACEF403" "EC9D1810" "C6272B04"
+        "5B3B71F9" "DC6B80D6" "3FDD4A8E" "9ADB1E69" "62A69526" "D43161C1"
+        "A41D570D" "7938DAD4" "A40E329C" "CFF46AAA" "36AD004C" "F600C838"
+        "1E425A31" "D951AE64" "FDB23FCE" "C9509D43" "687FEB69" "EDD1CC5E"
+        "0B8CC3BD" "F64B10EF" "86B63142" "A3AB8829" "555B2F74" "7C932665"
+        "CB2C0F1C" "C01BD702" "29388839" "D2AF05E4" "54504AC7" "8B758282"
+        "2846C0BA" "35C35F5C" "59160CC0" "46FD8251" "541FC68C" "9C86B022"
+        "BB709987" "6A460E74" "51A8A931" "09703FEE" "1C217E6C" "3826E52C"
+        "51AA691E" "0E423CFC" "99E9E316" "50C1217B" "624816CD" "AD9A95F9"
+        "D5B80194" "88D9C0A0" "A1FE3075" "A577E231" "83F81D4A" "3F2FA457"
+        "1EFC8CE0" "BA8A4FE8" "B6855DFE" "72B0A66E" "DED2FBAB" "FBE58A30"
+        "FAFABE1C" "5D71A87E" "2F741EF8" "C1FE86FE" "A6BBFDE5" "30677F0D"
+        "97D11D49" "F7A8443D" "0822E506" "A9F4614E" "011E2A94" "838FF88C"
+        "D68C8BB7" "C5C6424C" "FFFFFFFF" "FFFFFFFF",
+    list_to_integer(P, 16).
+
+dh_params(ffdhe2048) ->
+    #'DHParameter'{
+       prime = ffdhe2048_prime(),
+       base = ffdhe2048_generator()};
+dh_params(ffdhe3072) ->
+    #'DHParameter'{
+       prime = ffdhe3072_prime(),
+       base = ffdhe3072_generator()};
+dh_params(ffdhe4096) ->
+    #'DHParameter'{
+       prime = ffdhe4096_prime(),
+       base = ffdhe4096_generator()};
+dh_params(ffdhe6144) ->
+    #'DHParameter'{
+       prime = ffdhe6144_prime(),
+       base = ffdhe6144_generator()};
+dh_params(ffdhe8192) ->
+    #'DHParameter'{
+       prime = ffdhe8192_prime(),
+       base = ffdhe8192_generator()}.
diff --git a/lib/ssl/src/ssl_handshake.erl b/lib/ssl/src/ssl_handshake.erl
index 14df1d2e02..3a69c86e47 100644
--- a/lib/ssl/src/ssl_handshake.erl
+++ b/lib/ssl/src/ssl_handshake.erl
@@ -30,6 +30,7 @@
 -include("ssl_alert.hrl").
 -include("ssl_internal.hrl").
 -include("ssl_srp.hrl").
+-include("tls_handshake_1_3.hrl").
 -include_lib("public_key/include/public_key.hrl").
 
 -export_type([ssl_handshake/0, ssl_handshake_history/0,
@@ -38,7 +39,7 @@
 -type oid()               :: tuple().
 -type public_key_params() :: #'Dss-Parms'{} |  {namedCurve, oid()} | #'ECParameters'{} | term().
 -type public_key_info()   :: {oid(), #'RSAPublicKey'{} | integer() | #'ECPoint'{}, public_key_params()}.
--type ssl_handshake_history() :: {[binary()], [binary()]}.
+-type ssl_handshake_history() :: {iodata(), iodata()}.
 
 -type ssl_handshake() :: #server_hello{} | #server_hello_done{} | #certificate{} | #certificate_request{} |
 			 #client_key_exchange{} | #finished{} | #certificate_verify{} |
@@ -53,14 +54,14 @@
 -export([certify/7, certificate_verify/6, verify_signature/5,
 	 master_secret/4, server_key_exchange_hash/2, verify_connection/6,
 	 init_handshake_history/0, update_handshake_history/2, verify_server_key/5,
-         select_version/3, extension_value/1
+         select_version/3, select_supported_version/2, extension_value/1
 	]).
 
 %% Encode
--export([encode_handshake/2, encode_hello_extensions/1,
+-export([encode_handshake/2, encode_hello_extensions/1, encode_extensions/1, encode_extensions/2,
 	 encode_client_protocol_negotiation/2, encode_protocols_advertised_on_server/1]).
 %% Decode
--export([decode_handshake/3, decode_hello_extensions/1,
+-export([decode_handshake/3, decode_vector/1, decode_hello_extensions/4, decode_extensions/3,
 	 decode_server_key/3, decode_client_key/3,
 	 decode_suites/2
 	]).
@@ -71,13 +72,18 @@
          premaster_secret/2, premaster_secret/3, premaster_secret/4]).
 
 %% Extensions handling
--export([client_hello_extensions/5,
+-export([client_hello_extensions/6,
 	 handle_client_hello_extensions/9, %% Returns server hello extensions
 	 handle_server_hello_extensions/9, select_curve/2, select_curve/3,
          select_hashsign/4, select_hashsign/5,
-	 select_hashsign_algs/3
+	 select_hashsign_algs/3, empty_extensions/2, add_server_share/3
 	]).
 
+-export([get_cert_params/1,
+         server_name/3,
+         validation_fun_and_state/9,
+         handle_path_validation_error/7]).
+
 %%====================================================================
 %% Create handshake messages 
 %%====================================================================
@@ -93,7 +99,7 @@ hello_request() ->
 
 %%--------------------------------------------------------------------
 -spec server_hello(#session{}, ssl_record:ssl_version(), ssl_record:connection_states(),
-		   #hello_extensions{}) -> #server_hello{}.
+		   Extension::map()) -> #server_hello{}.
 %%
 %% Description: Creates a server hello message.
 %%--------------------------------------------------------------------
@@ -504,6 +510,21 @@ verify_server_key(#server_key_params{params_bin = EncParams,
 select_version(RecordCB, ClientVersion, Versions) ->
     do_select_version(RecordCB, ClientVersion, Versions).
 
+
+%% Called by TLS 1.2/1.3 Server when "supported_versions" is present
+%% in ClientHello.
+%% Input lists are ordered (highest first)
+select_supported_version([], _ServerVersions) ->
+    undefined;
+select_supported_version([ClientVersion|T], ServerVersions) ->
+    case lists:member(ClientVersion, ServerVersions) of
+        true ->
+            ClientVersion;
+        false ->
+            select_supported_version(T, ServerVersions)
+    end.
+
+
 %%====================================================================
 %% Encode handshake 
 %%====================================================================
@@ -517,7 +538,7 @@ encode_handshake(#server_hello{server_version = {Major, Minor},
 			       session_id = Session_ID,
 			       cipher_suite = CipherSuite,
 			       compression_method = Comp_method,
-			       extensions = #hello_extensions{} = Extensions}, _Version) ->
+			       extensions = Extensions}, _Version) ->
 			SID_length = byte_size(Session_ID),
     ExtensionsBin = encode_hello_extensions(Extensions),
     {?SERVER_HELLO, <<?BYTE(Major), ?BYTE(Minor), Random:32/binary,
@@ -567,71 +588,126 @@ encode_handshake(#certificate_verify{signature = BinSig, hashsign_algorithm = Ha
 encode_handshake(#finished{verify_data = VerifyData}, _Version) ->
     {?FINISHED, VerifyData}.
 
-encode_hello_extensions(#hello_extensions{} = Extensions) ->
-    encode_hello_extensions(hello_extensions_list(Extensions), <<>>).
-encode_hello_extensions([], <<>>) ->
-    <<>>;
-encode_hello_extensions([], Acc) ->
+encode_hello_extensions(Extensions) ->
+    encode_extensions(hello_extensions_list(Extensions), <<>>).
+
+encode_extensions(Exts) ->
+    encode_extensions(Exts, <<>>).
+    
+encode_extensions([], <<>>) ->
+    <<?UINT16(0)>>;
+encode_extensions([], Acc) ->
     Size = byte_size(Acc),
     <<?UINT16(Size), Acc/binary>>;
-
-encode_hello_extensions([#alpn{extension_data = ExtensionData} | Rest], Acc) ->
-	Len = byte_size(ExtensionData),
+encode_extensions([#alpn{extension_data = ExtensionData} | Rest], Acc) ->
+    Len = byte_size(ExtensionData),
     ExtLen = Len + 2,
-	encode_hello_extensions(Rest, <<?UINT16(?ALPN_EXT), ?UINT16(ExtLen), ?UINT16(Len),
-					ExtensionData/binary, Acc/binary>>);
-encode_hello_extensions([#next_protocol_negotiation{extension_data = ExtensionData} | Rest], Acc) ->
+    encode_extensions(Rest, <<?UINT16(?ALPN_EXT), ?UINT16(ExtLen), ?UINT16(Len),
+                              ExtensionData/binary, Acc/binary>>);
+encode_extensions([#next_protocol_negotiation{extension_data = ExtensionData} | Rest], Acc) ->
     Len = byte_size(ExtensionData),
-    encode_hello_extensions(Rest, <<?UINT16(?NEXTPROTONEG_EXT), ?UINT16(Len),
+    encode_extensions(Rest, <<?UINT16(?NEXTPROTONEG_EXT), ?UINT16(Len),
 				    ExtensionData/binary, Acc/binary>>);
-encode_hello_extensions([#renegotiation_info{renegotiated_connection = undefined} | Rest], Acc) ->
-    encode_hello_extensions(Rest, Acc);
-encode_hello_extensions([#renegotiation_info{renegotiated_connection = ?byte(0) = Info} | Rest], Acc) ->
+encode_extensions([#renegotiation_info{renegotiated_connection = undefined} | Rest], Acc) ->
+    encode_extensions(Rest, Acc);
+encode_extensions([#renegotiation_info{renegotiated_connection = ?byte(0) = Info} | Rest], Acc) ->
     Len = byte_size(Info),
-    encode_hello_extensions(Rest, <<?UINT16(?RENEGOTIATION_EXT), ?UINT16(Len), Info/binary, Acc/binary>>);
+    encode_extensions(Rest, <<?UINT16(?RENEGOTIATION_EXT), ?UINT16(Len), Info/binary, Acc/binary>>);
 
-encode_hello_extensions([#renegotiation_info{renegotiated_connection = Info} | Rest], Acc) ->
+encode_extensions([#renegotiation_info{renegotiated_connection = Info} | Rest], Acc) ->
     InfoLen = byte_size(Info),
     Len = InfoLen +1,
-    encode_hello_extensions(Rest, <<?UINT16(?RENEGOTIATION_EXT), ?UINT16(Len), ?BYTE(InfoLen),
+    encode_extensions(Rest, <<?UINT16(?RENEGOTIATION_EXT), ?UINT16(Len), ?BYTE(InfoLen),
 				    Info/binary, Acc/binary>>);
-encode_hello_extensions([#elliptic_curves{elliptic_curve_list = EllipticCurves} | Rest], Acc) ->
+encode_extensions([#elliptic_curves{elliptic_curve_list = EllipticCurves} | Rest], Acc) ->
 
     EllipticCurveList = << <<(tls_v1:oid_to_enum(X)):16>> || X <- EllipticCurves>>,
     ListLen = byte_size(EllipticCurveList),
     Len = ListLen + 2,
-    encode_hello_extensions(Rest, <<?UINT16(?ELLIPTIC_CURVES_EXT),
+    encode_extensions(Rest, <<?UINT16(?ELLIPTIC_CURVES_EXT),
 				 ?UINT16(Len), ?UINT16(ListLen), EllipticCurveList/binary, Acc/binary>>);
-encode_hello_extensions([#ec_point_formats{ec_point_format_list = ECPointFormats} | Rest], Acc) ->
+encode_extensions([#supported_groups{supported_groups = SupportedGroups} | Rest], Acc) ->
+
+    SupportedGroupList = << <<(tls_v1:group_to_enum(X)):16>> || X <- SupportedGroups>>,
+    ListLen = byte_size(SupportedGroupList),
+    Len = ListLen + 2,
+    encode_extensions(Rest, <<?UINT16(?ELLIPTIC_CURVES_EXT),
+                              ?UINT16(Len), ?UINT16(ListLen), 
+                              SupportedGroupList/binary, Acc/binary>>);
+encode_extensions([#ec_point_formats{ec_point_format_list = ECPointFormats} | Rest], Acc) ->
     ECPointFormatList = list_to_binary(ECPointFormats),
     ListLen = byte_size(ECPointFormatList),
     Len = ListLen + 1,
-    encode_hello_extensions(Rest, <<?UINT16(?EC_POINT_FORMATS_EXT),
+    encode_extensions(Rest, <<?UINT16(?EC_POINT_FORMATS_EXT),
 				 ?UINT16(Len), ?BYTE(ListLen), ECPointFormatList/binary, Acc/binary>>);
-encode_hello_extensions([#srp{username = UserName} | Rest], Acc) ->
+encode_extensions([#srp{username = UserName} | Rest], Acc) ->
     SRPLen = byte_size(UserName),
-    Len = SRPLen + 2,
-    encode_hello_extensions(Rest, <<?UINT16(?SRP_EXT), ?UINT16(Len), ?BYTE(SRPLen),
+    Len = SRPLen + 1,
+    encode_extensions(Rest, <<?UINT16(?SRP_EXT), ?UINT16(Len), ?BYTE(SRPLen),
 				    UserName/binary, Acc/binary>>);
-encode_hello_extensions([#hash_sign_algos{hash_sign_algos = HashSignAlgos} | Rest], Acc) ->
+encode_extensions([#hash_sign_algos{hash_sign_algos = HashSignAlgos} | Rest], Acc) ->
     SignAlgoList = << <<(ssl_cipher:hash_algorithm(Hash)):8, (ssl_cipher:sign_algorithm(Sign)):8>> ||
 		       {Hash, Sign} <- HashSignAlgos >>,
     ListLen = byte_size(SignAlgoList),
     Len = ListLen + 2,
-    encode_hello_extensions(Rest, <<?UINT16(?SIGNATURE_ALGORITHMS_EXT),
+    encode_extensions(Rest, <<?UINT16(?SIGNATURE_ALGORITHMS_EXT),
 				 ?UINT16(Len), ?UINT16(ListLen), SignAlgoList/binary, Acc/binary>>);
-encode_hello_extensions([#sni{hostname = Hostname} | Rest], Acc) ->
+encode_extensions([#signature_algorithms{
+                            signature_scheme_list = SignatureSchemes} | Rest], Acc) ->
+    SignSchemeList = << <<(ssl_cipher:signature_scheme(SignatureScheme)):16 >> ||
+		       SignatureScheme <- SignatureSchemes >>,
+    ListLen = byte_size(SignSchemeList),
+    Len = ListLen + 2,
+    encode_extensions(Rest, <<?UINT16(?SIGNATURE_ALGORITHMS_EXT),
+				 ?UINT16(Len), ?UINT16(ListLen), SignSchemeList/binary, Acc/binary>>);
+encode_extensions([#signature_algorithms_cert{
+                            signature_scheme_list = SignatureSchemes} | Rest], Acc) ->
+    SignSchemeList = << <<(ssl_cipher:signature_scheme(SignatureScheme)):16 >> ||
+		       SignatureScheme <- SignatureSchemes >>,
+    ListLen = byte_size(SignSchemeList),
+    Len = ListLen + 2,
+    encode_extensions(Rest, <<?UINT16(?SIGNATURE_ALGORITHMS_CERT_EXT),
+				 ?UINT16(Len), ?UINT16(ListLen), SignSchemeList/binary, Acc/binary>>);
+encode_extensions([#sni{hostname = Hostname} | Rest], Acc) ->
     HostLen = length(Hostname),
     HostnameBin = list_to_binary(Hostname),
     % Hostname type (1 byte) + Hostname length (2 bytes) + Hostname (HostLen bytes)
     ServerNameLength = 1 + 2 + HostLen,
     % ServerNameListSize (2 bytes) + ServerNameLength
     ExtLength = 2 + ServerNameLength,
-    encode_hello_extensions(Rest, <<?UINT16(?SNI_EXT), ?UINT16(ExtLength),
-				    ?UINT16(ServerNameLength),
-				    ?BYTE(?SNI_NAMETYPE_HOST_NAME),
-				    ?UINT16(HostLen), HostnameBin/binary,
-				    Acc/binary>>).
+    encode_extensions(Rest, <<?UINT16(?SNI_EXT), ?UINT16(ExtLength),
+                              ?UINT16(ServerNameLength),
+                              ?BYTE(?SNI_NAMETYPE_HOST_NAME),
+                              ?UINT16(HostLen), HostnameBin/binary,
+                              Acc/binary>>);
+encode_extensions([#client_hello_versions{versions = Versions0} | Rest], Acc) ->
+    Versions = encode_versions(Versions0),
+    VerLen = byte_size(Versions),
+    Len = VerLen + 1,
+    encode_extensions(Rest, <<?UINT16(?SUPPORTED_VERSIONS_EXT),
+                              ?UINT16(Len), ?BYTE(VerLen), Versions/binary, Acc/binary>>);
+encode_extensions([#server_hello_selected_version{selected_version = Version0} | Rest], Acc) ->
+    Version = encode_versions([Version0]),
+    Len = byte_size(Version), %% 2
+    encode_extensions(Rest, <<?UINT16(?SUPPORTED_VERSIONS_EXT),
+                              ?UINT16(Len), Version/binary, Acc/binary>>);
+encode_extensions([#key_share_client_hello{client_shares = ClientShares0} | Rest], Acc) ->
+    ClientShares = encode_client_shares(ClientShares0),
+    ClientSharesLen = byte_size(ClientShares),
+    Len = ClientSharesLen + 2,
+    encode_extensions(Rest, <<?UINT16(?KEY_SHARE_EXT),
+                              ?UINT16(Len), ?UINT16(ClientSharesLen),
+                              ClientShares/binary, Acc/binary>>);
+encode_extensions([#key_share_server_hello{server_share = ServerShare0} | Rest], Acc) ->
+    ServerShare = encode_key_share_entry(ServerShare0),
+    Len = byte_size(ServerShare),
+    encode_extensions(Rest, <<?UINT16(?KEY_SHARE_EXT),
+                              ?UINT16(Len), ServerShare/binary, Acc/binary>>);
+encode_extensions([#key_share_hello_retry_request{selected_group = Group0} | Rest], Acc) ->
+    Group = tls_v1:group_to_enum(Group0),
+    encode_extensions(Rest, <<?UINT16(?KEY_SHARE_EXT),
+                              ?UINT16(2), ?UINT16(Group), Acc/binary>>).
+
 
 encode_client_protocol_negotiation(undefined, _) ->
     undefined;
@@ -657,7 +733,7 @@ decode_handshake(_, ?NEXT_PROTOCOL, <<?BYTE(SelectedProtocolLength),
 				      ?BYTE(PaddingLength), _Padding:PaddingLength/binary>>) ->
     #next_protocol{selected_protocol = SelectedProtocol};
 
-decode_handshake(_Version, ?SERVER_HELLO, <<?BYTE(Major), ?BYTE(Minor), Random:32/binary,
+decode_handshake(Version, ?SERVER_HELLO, <<?BYTE(Major), ?BYTE(Minor), Random:32/binary,
 					    ?BYTE(SID_length), Session_ID:SID_length/binary,
 					    Cipher_suite:2/binary, ?BYTE(Comp_method)>>) ->
     #server_hello{
@@ -666,14 +742,13 @@ decode_handshake(_Version, ?SERVER_HELLO, <<?BYTE(Major), ?BYTE(Minor), Random:3
        session_id = Session_ID,
        cipher_suite = Cipher_suite,
        compression_method = Comp_method,
-       extensions = #hello_extensions{}};
+       extensions = empty_extensions(Version, server_hello)};
 
-decode_handshake(_Version, ?SERVER_HELLO, <<?BYTE(Major), ?BYTE(Minor), Random:32/binary,
+decode_handshake(Version, ?SERVER_HELLO, <<?BYTE(Major), ?BYTE(Minor), Random:32/binary,
 		       ?BYTE(SID_length), Session_ID:SID_length/binary,
 		       Cipher_suite:2/binary, ?BYTE(Comp_method),
 		       ?UINT16(ExtLen), Extensions:ExtLen/binary>>) ->
-
-    HelloExtensions = decode_hello_extensions(Extensions),
+    HelloExtensions = decode_hello_extensions(Extensions, Version, {Major, Minor}, server_hello),
 
     #server_hello{
        server_version = {Major,Minor},
@@ -716,20 +791,52 @@ decode_handshake(_Version, ?FINISHED, VerifyData) ->
 decode_handshake(_, Message, _) ->
     throw(?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, {unknown_or_malformed_handshake, Message})).
 
+
+%%--------------------------------------------------------------------
+-spec decode_vector(binary()) -> binary().
+%%
+%% Description: Remove length tag from TLS Vector type. Needed
+%% for client hello when extensions in older versions may be empty.
+%% 
+%%--------------------------------------------------------------------
+decode_vector(<<>>) ->
+    <<>>;
+decode_vector(<<?UINT16(Len), Vector:Len/binary>>) ->
+    Vector.
+
+%%--------------------------------------------------------------------
+-spec decode_hello_extensions(binary(), ssl_record:ssl_version(),
+                              ssl_record:ssl_version(), atom()) -> map().
+%%
+%% Description: Decodes TLS hello extensions
+%%--------------------------------------------------------------------
+decode_hello_extensions(Extensions, LocalVersion, LegacyVersion, MessageType0) ->
+    %% Convert legacy atoms
+    MessageType =
+        case MessageType0 of
+            client -> client_hello;
+            server -> server_hello;
+            T -> T
+        end,
+    %% RFC 8446 - 4.2.1
+    %% Servers MUST be prepared to receive ClientHellos that include this extension but
+    %% do not include 0x0304 in the list of versions.
+    %% Clients MUST check for this extension prior to processing the rest of the
+    %% ServerHello (although they will have to parse the ServerHello in order to read
+    %% the extension).
+    Version = process_supported_versions_extension(Extensions, LocalVersion, LegacyVersion),
+    decode_extensions(Extensions, Version, MessageType, empty_extensions(Version, MessageType)).
+
 %%--------------------------------------------------------------------
--spec decode_hello_extensions({client, binary()} | binary()) -> #hello_extensions{}.
+-spec decode_extensions(binary(),tuple(), atom()) -> map().
 %%
 %% Description: Decodes TLS hello extensions
 %%--------------------------------------------------------------------
-decode_hello_extensions({client, <<>>}) ->
-    #hello_extensions{};
-decode_hello_extensions({client, <<?UINT16(ExtLen), Extensions:ExtLen/binary>>}) ->
-    decode_hello_extensions(Extensions);
-decode_hello_extensions(Extensions) ->
-    dec_hello_extensions(Extensions, #hello_extensions{}).
+decode_extensions(Extensions, Version, MessageType) ->
+    decode_extensions(Extensions, Version, MessageType, empty_extensions()).
 
 %%--------------------------------------------------------------------
--spec decode_server_key(binary(), ssl_cipher_format:key_algo(), ssl_record:ssl_version()) ->
+-spec decode_server_key(binary(), ssl:kex_algo(), ssl_record:ssl_version()) ->
 			       #server_key_params{}.
 %%
 %% Description: Decode server_key data and return appropriate type
@@ -738,7 +845,7 @@ decode_server_key(ServerKey, Type, Version) ->
     dec_server_key(ServerKey, key_exchange_alg(Type), Version).
 
 %%--------------------------------------------------------------------
--spec decode_client_key(binary(), ssl_cipher_format:key_algo(), ssl_record:ssl_version()) ->
+-spec decode_client_key(binary(), ssl:kex_algo(), ssl_record:ssl_version()) ->
 			    #encrypted_premaster_secret{}
 			    | #client_diffie_hellman_public{}
 			    | #client_ec_diffie_hellman_public{}
@@ -936,98 +1043,218 @@ premaster_secret(EncSecret, #{algorithm := rsa} = Engine) ->
 %%====================================================================
 %% Extensions handling
 %%====================================================================
-client_hello_extensions(Version, CipherSuites, 
-			#ssl_options{signature_algs = SupportedHashSigns,
-				     eccs = SupportedECCs} = SslOpts, ConnectionStates, Renegotiation) ->
-    {EcPointFormats, EllipticCurves} =
-	case advertises_ec_ciphers(lists:map(fun ssl_cipher_format:suite_definition/1, CipherSuites)) of
-	    true ->
-		client_ecc_extensions(SupportedECCs);
-	    false ->
-		{undefined, undefined}
-	end,
+client_hello_extensions(Version, CipherSuites, SslOpts, ConnectionStates, Renegotiation, KeyShare) ->
+    HelloExtensions0 = add_tls12_extensions(Version, SslOpts, ConnectionStates, Renegotiation),
+    HelloExtensions1 = add_common_extensions(Version, HelloExtensions0, CipherSuites, SslOpts),
+    maybe_add_tls13_extensions(Version, HelloExtensions1, SslOpts, KeyShare).
+
+
+add_tls12_extensions(_Version,
+                     SslOpts,
+                     ConnectionStates,
+                     Renegotiation) ->
     SRP = srp_user(SslOpts),
+    #{renegotiation_info => renegotiation_info(tls_record, client,
+                                               ConnectionStates, Renegotiation),
+      srp => SRP,
+      alpn => encode_alpn(SslOpts#ssl_options.alpn_advertised_protocols, Renegotiation),
+      next_protocol_negotiation =>
+          encode_client_protocol_negotiation(SslOpts#ssl_options.next_protocol_selector,
+                                             Renegotiation),
+      sni => sni(SslOpts#ssl_options.server_name_indication)
+     }.
+
 
-    #hello_extensions{
-       renegotiation_info = renegotiation_info(tls_record, client,
-					       ConnectionStates, Renegotiation),
-       srp = SRP,
-       signature_algs = available_signature_algs(SupportedHashSigns, Version),
-       ec_point_formats = EcPointFormats,
-       elliptic_curves = EllipticCurves,
-       alpn = encode_alpn(SslOpts#ssl_options.alpn_advertised_protocols, Renegotiation),
-       next_protocol_negotiation =
-	   encode_client_protocol_negotiation(SslOpts#ssl_options.next_protocol_selector,
-					      Renegotiation),
-       sni = sni(SslOpts#ssl_options.server_name_indication)}.
+add_common_extensions({3,4},
+                      HelloExtensions,
+                      _CipherSuites,
+                      #ssl_options{eccs = SupportedECCs,
+                                   supported_groups = Groups,
+                                   signature_algs = SignatureSchemes}) ->
+    {EcPointFormats, _} =
+        client_ecc_extensions(SupportedECCs),
+    HelloExtensions#{ec_point_formats => EcPointFormats,
+                     elliptic_curves => Groups,
+                     signature_algs => signature_algs_ext(SignatureSchemes)};
+
+add_common_extensions(Version,
+                      HelloExtensions,
+                      CipherSuites,
+                      #ssl_options{eccs = SupportedECCs,
+                                   signature_algs = SupportedHashSigns}) ->
+
+    {EcPointFormats, EllipticCurves} =
+        case advertises_ec_ciphers(
+               lists:map(fun ssl_cipher_format:suite_definition/1,
+                         CipherSuites)) of
+            true ->
+                client_ecc_extensions(SupportedECCs);
+            false ->
+                {undefined, undefined}
+        end,
+    HelloExtensions#{ec_point_formats => EcPointFormats,
+                     elliptic_curves => EllipticCurves,
+                     signature_algs => available_signature_algs(SupportedHashSigns, Version)}.
+
+
+maybe_add_tls13_extensions({3,4},
+                           HelloExtensions0,
+                           #ssl_options{signature_algs_cert = SignatureSchemes,
+                                        versions = SupportedVersions},
+                           KeyShare) ->
+    HelloExtensions =
+        HelloExtensions0#{client_hello_versions =>
+                              #client_hello_versions{versions = SupportedVersions},
+                          signature_algs_cert =>
+                              signature_algs_cert(SignatureSchemes)},
+    maybe_add_key_share(HelloExtensions, KeyShare);
+maybe_add_tls13_extensions(_, HelloExtensions, _, _) ->
+    HelloExtensions.
+
+
+%% TODO: Add support for PSK key establishment
+
+%% RFC 8446 (TLS 1.3) - 4.2.8.  Key Share
+%%
+%% 4.2.8.1.  Diffie-Hellman Parameters
+%% Diffie-Hellman [DH76] parameters for both clients and servers are
+%% encoded in the opaque key_exchange field of a KeyShareEntry in a
+%% KeyShare structure.  The opaque value contains the Diffie-Hellman
+%% public value (Y = g^X mod p) for the specified group (see [RFC7919]
+%% for group definitions) encoded as a big-endian integer and padded to
+%% the left with zeros to the size of p in bytes.
+%%
+%% 4.2.8.2.  ECDHE Parameters
+%%
+%% ECDHE parameters for both clients and servers are encoded in the
+%% opaque key_exchange field of a KeyShareEntry in a KeyShare structure.
+%%
+%% For secp256r1, secp384r1, and secp521r1, the contents are the
+%% serialized value of the following struct:
+%%
+%%    struct {
+%%        uint8 legacy_form = 4;
+%%        opaque X[coordinate_length];
+%%        opaque Y[coordinate_length];
+%%    } UncompressedPointRepresentation;
+%%
+%% X and Y, respectively, are the binary representations of the x and y
+%% values in network byte order.  There are no internal length markers,
+%% so each number representation occupies as many octets as implied by
+%% the curve parameters.  For P-256, this means that each of X and Y use
+%% 32 octets, padded on the left by zeros if necessary.  For P-384, they
+%% take 48 octets each.  For P-521, they take 66 octets each.
+maybe_add_key_share(HelloExtensions, undefined) ->
+    HelloExtensions;
+maybe_add_key_share(HelloExtensions, KeyShare) ->
+    #key_share_client_hello{client_shares = ClientShares0} = KeyShare,
+    %% Keep only public keys
+    ClientShares = lists:map(fun kse_remove_private_key/1, ClientShares0),
+    HelloExtensions#{key_share => #key_share_client_hello{
+                                     client_shares = ClientShares}}.
+
+add_server_share(server_hello, Extensions, KeyShare) ->
+    #key_share_server_hello{server_share = ServerShare0} = KeyShare,
+    %% Keep only public keys
+    ServerShare = kse_remove_private_key(ServerShare0),
+    Extensions#{key_share => #key_share_server_hello{
+                                server_share = ServerShare}};
+add_server_share(hello_retry_request, Extensions,
+                 #key_share_server_hello{
+                    server_share = #key_share_entry{group = Group}}) ->
+    Extensions#{key_share => #key_share_hello_retry_request{
+                                selected_group = Group}}.
+
+
+kse_remove_private_key(#key_share_entry{
+                      group = Group,
+                      key_exchange =
+                          #'ECPrivateKey'{publicKey = PublicKey}}) ->
+    #key_share_entry{
+       group = Group,
+       key_exchange = PublicKey};
+kse_remove_private_key(#key_share_entry{
+                      group = Group,
+                      key_exchange =
+                          {PublicKey, _}}) ->
+    #key_share_entry{
+       group = Group,
+       key_exchange = PublicKey}.
+
+signature_algs_ext(undefined) ->
+    undefined;
+signature_algs_ext(SignatureSchemes0) ->
+    %% The SSL option signature_algs contains both hash-sign algorithms (tuples) and
+    %% signature schemes (atoms) if TLS 1.3 is configured.
+    %% Filter out all hash-sign tuples when creating the signature_algs extension.
+    %% (TLS 1.3 specific record type)
+    SignatureSchemes = lists:filter(fun is_atom/1, SignatureSchemes0),
+    #signature_algorithms{signature_scheme_list = SignatureSchemes}.
+
+signature_algs_cert(undefined) ->
+    undefined;
+signature_algs_cert(SignatureSchemes) ->
+    #signature_algorithms_cert{signature_scheme_list = SignatureSchemes}.
 
 handle_client_hello_extensions(RecordCB, Random, ClientCipherSuites,
-			       #hello_extensions{renegotiation_info = Info,
-						 srp = SRP,
-						 ec_point_formats = ECCFormat,
-						 alpn = ALPN,
-						 next_protocol_negotiation = NextProtocolNegotiation}, Version,
+                               Exts, Version,
 			       #ssl_options{secure_renegotiate = SecureRenegotation,
                                             alpn_preferred_protocols = ALPNPreferredProtocols} = Opts,
 			       #session{cipher_suite = NegotiatedCipherSuite,
 					compression_method = Compression} = Session0,
 			       ConnectionStates0, Renegotiation) ->
-    Session = handle_srp_extension(SRP, Session0),
-    ConnectionStates = handle_renegotiation_extension(server, RecordCB, Version, Info,
+    Session = handle_srp_extension(maps:get(srp, Exts, undefined), Session0),
+    ConnectionStates = handle_renegotiation_extension(server, RecordCB, Version, maps:get(renegotiation_info, Exts, undefined),
 						      Random, NegotiatedCipherSuite, 
 						      ClientCipherSuites, Compression,
 						      ConnectionStates0, Renegotiation, SecureRenegotation),
 
-    ServerHelloExtensions =  #hello_extensions{
-				renegotiation_info = renegotiation_info(RecordCB, server,
-									ConnectionStates, Renegotiation),
-				ec_point_formats = server_ecc_extension(Version, ECCFormat)
-			       },
-
+    Empty = empty_extensions(Version, server_hello),
+    ServerHelloExtensions = Empty#{renegotiation_info => renegotiation_info(RecordCB, server,
+                                                                            ConnectionStates, Renegotiation),
+                                   ec_point_formats => server_ecc_extension(Version, 
+                                                                            maps:get(ec_point_formats, Exts, undefined))
+                                  },
+    
     %% If we receive an ALPN extension and have ALPN configured for this connection,
     %% we handle it. Otherwise we check for the NPN extension.
+    ALPN = maps:get(alpn, Exts, undefined),
     if
         ALPN =/= undefined, ALPNPreferredProtocols =/= undefined ->
-			case handle_alpn_extension(ALPNPreferredProtocols, decode_alpn(ALPN)) of
-                #alert{} = Alert ->
-                    Alert;
-                Protocol ->
-                    {Session, ConnectionStates, Protocol,
-                        ServerHelloExtensions#hello_extensions{alpn=encode_alpn([Protocol], Renegotiation)}}
-            end;
+            Protocol = handle_alpn_extension(ALPNPreferredProtocols, decode_alpn(ALPN)),
+            {Session, ConnectionStates, Protocol,
+             ServerHelloExtensions#{alpn => encode_alpn([Protocol], Renegotiation)}};
         true ->
+            NextProtocolNegotiation = maps:get(next_protocol_negotiation, Exts, undefined),
             ProtocolsToAdvertise = handle_next_protocol_extension(NextProtocolNegotiation, Renegotiation, Opts),
             {Session, ConnectionStates, undefined,
-				ServerHelloExtensions#hello_extensions{next_protocol_negotiation=
-                	encode_protocols_advertised_on_server(ProtocolsToAdvertise)}}
+             ServerHelloExtensions#{next_protocol_negotiation =>
+                                        encode_protocols_advertised_on_server(ProtocolsToAdvertise)}}
     end.
 
 handle_server_hello_extensions(RecordCB, Random, CipherSuite, Compression,
-			       #hello_extensions{renegotiation_info = Info,
-                                                 alpn = ALPN,
-						 next_protocol_negotiation = NextProtocolNegotiation}, Version,
+                               Exts, Version,
 			       #ssl_options{secure_renegotiate = SecureRenegotation,
 					    next_protocol_selector = NextProtoSelector},
 			       ConnectionStates0, Renegotiation) ->
-    ConnectionStates = handle_renegotiation_extension(client, RecordCB, Version, Info, Random, 
+    ConnectionStates = handle_renegotiation_extension(client, RecordCB, Version,  
+                                                      maps:get(renegotiation_info, Exts, undefined), Random, 
 						      CipherSuite, undefined,
 						      Compression, ConnectionStates0,
 						      Renegotiation, SecureRenegotation),
 
     %% If we receive an ALPN extension then this is the protocol selected,
     %% otherwise handle the NPN extension.
+    ALPN = maps:get(alpn, Exts, undefined),
     case decode_alpn(ALPN) of
         %% ServerHello contains exactly one protocol: the one selected.
         %% We also ignore the ALPN extension during renegotiation (see encode_alpn/2).
         [Protocol] when not Renegotiation ->
             {ConnectionStates, alpn, Protocol};
         undefined ->
-            case handle_next_protocol(NextProtocolNegotiation, NextProtoSelector, Renegotiation) of
-                #alert{} = Alert ->
-                    Alert;
-                Protocol ->
-                    {ConnectionStates, npn, Protocol}
-            end;
+            NextProtocolNegotiation = maps:get(next_protocol_negotiation, Exts, undefined),
+            Protocol = handle_next_protocol(NextProtocolNegotiation, NextProtoSelector, Renegotiation),
+            {ConnectionStates, npn, Protocol};
         {error, Reason} ->
             ?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, Reason);
         [] ->
@@ -1070,26 +1297,50 @@ select_hashsign(_, _, KeyExAlgo, _, _Version) when KeyExAlgo == dh_anon;
     {null, anon};
 %% The signature_algorithms extension was introduced with TLS 1.2. Ignore it if we have
 %% negotiated a lower version.
-select_hashsign(HashSigns, Cert, KeyExAlgo, 
-		undefined, {Major, Minor} = Version)  when Major >= 3 andalso Minor >= 3->
-    select_hashsign(HashSigns, Cert, KeyExAlgo, tls_v1:default_signature_algs(Version), Version);
-select_hashsign(#hash_sign_algos{hash_sign_algos = HashSigns}, Cert, KeyExAlgo, SupportedHashSigns,
-		{Major, Minor}) when Major >= 3 andalso Minor >= 3 ->
-    #'OTPCertificate'{tbsCertificate = TBSCert} = public_key:pkix_decode_cert(Cert, otp),
-    #'OTPSubjectPublicKeyInfo'{algorithm = {_, SubjAlgo, _}} = 
-     	TBSCert#'OTPTBSCertificate'.subjectPublicKeyInfo,
-
-    SubSign = sign_algo(SubjAlgo),
-    
-    case lists:filter(fun({_, S} = Algos) when S == SubSign ->
-			      is_acceptable_hash_sign(Algos, KeyExAlgo, SupportedHashSigns);
-			 (_)  ->
-			      false
-		      end, HashSigns) of
-	[] ->
-            ?ALERT_REC(?FATAL, ?INSUFFICIENT_SECURITY, no_suitable_signature_algorithm);
-	[HashSign | _] ->
-	    HashSign
+select_hashsign({ClientHashSigns, ClientSignatureSchemes},
+                Cert, KeyExAlgo, undefined, {Major, Minor} = Version)
+  when Major >= 3 andalso Minor >= 3->
+    select_hashsign({ClientHashSigns, ClientSignatureSchemes}, Cert, KeyExAlgo,
+                    tls_v1:default_signature_algs(Version), Version);
+select_hashsign({#hash_sign_algos{hash_sign_algos = ClientHashSigns},
+                 ClientSignatureSchemes0},
+                Cert, KeyExAlgo, SupportedHashSigns, {Major, Minor})
+  when Major >= 3 andalso Minor >= 3 ->
+    ClientSignatureSchemes = get_signature_scheme(ClientSignatureSchemes0),
+    {SignAlgo0, Param, PublicKeyAlgo0} = get_cert_params(Cert),
+    SignAlgo = sign_algo(SignAlgo0),
+    PublicKeyAlgo = public_key_algo(PublicKeyAlgo0),
+
+    %% RFC 5246 (TLS 1.2)
+    %% If the client provided a "signature_algorithms" extension, then all
+    %% certificates provided by the server MUST be signed by a
+    %% hash/signature algorithm pair that appears in that extension.
+    %%
+    %% RFC 8446 (TLS 1.3)
+    %% TLS 1.3 provides two extensions for indicating which signature
+    %% algorithms may be used in digital signatures.  The
+    %% "signature_algorithms_cert" extension applies to signatures in
+    %% certificates and the "signature_algorithms" extension, which
+    %% originally appeared in TLS 1.2, applies to signatures in
+    %% CertificateVerify messages.
+    %%
+    %% If no "signature_algorithms_cert" extension is
+    %% present, then the "signature_algorithms" extension also applies to
+    %% signatures appearing in certificates.
+    case is_supported_sign(SignAlgo, Param, ClientHashSigns, ClientSignatureSchemes) of
+        true ->
+            case lists:filter(fun({_, S} = Algos) when S == PublicKeyAlgo ->
+                                      is_acceptable_hash_sign(Algos, KeyExAlgo, SupportedHashSigns);
+                                 (_)  ->
+                                      false
+                              end, ClientHashSigns) of
+                [] ->
+                    ?ALERT_REC(?FATAL, ?INSUFFICIENT_SECURITY, no_suitable_signature_algorithm);
+                [HashSign | _] ->
+                    HashSign
+            end;
+        false ->
+            ?ALERT_REC(?FATAL, ?INSUFFICIENT_SECURITY, no_suitable_signature_algorithm)
     end;
 select_hashsign(_, Cert, _, _, Version) ->
     #'OTPCertificate'{tbsCertificate = TBSCert} = public_key:pkix_decode_cert(Cert, otp),
@@ -1103,21 +1354,23 @@ select_hashsign(_, Cert, _, _, Version) ->
 %%
 %% Description: Handles signature algorithms selection for certificate requests (client) 
 %%--------------------------------------------------------------------
-select_hashsign(#certificate_request{hashsign_algorithms = #hash_sign_algos{hash_sign_algos = HashSigns}, 
-				     certificate_types = Types}, Cert, SupportedHashSigns, 
+select_hashsign(#certificate_request{
+                   hashsign_algorithms = #hash_sign_algos{
+                                            hash_sign_algos = HashSigns},
+                   certificate_types = Types},
+                Cert,
+                SupportedHashSigns,
 		{Major, Minor})  when Major >= 3 andalso Minor >= 3->
-    #'OTPCertificate'{tbsCertificate = TBSCert} = public_key:pkix_decode_cert(Cert, otp),
-    #'OTPCertificate'{tbsCertificate = TBSCert,
-		      signatureAlgorithm =  {_,SignAlgo, _}} = public_key:pkix_decode_cert(Cert, otp),
-    #'OTPSubjectPublicKeyInfo'{algorithm = {_, SubjAlgo, _}} = 
-     	TBSCert#'OTPTBSCertificate'.subjectPublicKeyInfo,
-
-    Sign = sign_algo(SignAlgo),
-    SubSign = sign_algo(SubjAlgo),
-    
-    case is_acceptable_cert_type(SubSign, HashSigns, Types) andalso is_supported_sign(Sign, HashSigns) of
+    {SignAlgo0, Param, PublicKeyAlgo0} = get_cert_params(Cert),
+    SignAlgo = sign_algo(SignAlgo0),
+    PublicKeyAlgo = public_key_algo(PublicKeyAlgo0),
+
+    case is_acceptable_cert_type(PublicKeyAlgo, Types) andalso
+        %% certificate_request has no "signature_algorithms_cert"
+        %% extension in TLS 1.2.
+        is_supported_sign(SignAlgo, Param, HashSigns, undefined) of
 	true ->
-	    case lists:filter(fun({_, S} = Algos) when S == SubSign ->
+	    case lists:filter(fun({_, S} = Algos) when S == PublicKeyAlgo ->
 				 is_acceptable_hash_sign(Algos, SupportedHashSigns);
 			    (_)  ->
 				      false
@@ -1130,8 +1383,38 @@ select_hashsign(#certificate_request{hashsign_algorithms = #hash_sign_algos{hash
 	false ->
 	    ?ALERT_REC(?FATAL, ?INSUFFICIENT_SECURITY, no_suitable_signature_algorithm)
     end;
-select_hashsign(#certificate_request{}, Cert, _, Version) ->
-    select_hashsign(undefined, Cert, undefined, [], Version).
+select_hashsign(#certificate_request{certificate_types = Types}, Cert, _, Version) ->
+    {_, _, PublicKeyAlgo0} = get_cert_params(Cert),
+    PublicKeyAlgo = public_key_algo(PublicKeyAlgo0),
+
+    %% Check cert even for TLS 1.0/1.1
+    case is_acceptable_cert_type(PublicKeyAlgo, Types) of
+        true ->
+            select_hashsign(undefined, Cert, undefined, [], Version);
+        false ->
+            ?ALERT_REC(?FATAL, ?INSUFFICIENT_SECURITY, no_suitable_signature_algorithm)
+    end.
+
+
+%% Gets the relevant parameters of a certificate:
+%% - signature algorithm
+%% - parameters of the signature algorithm
+%% - public key algorithm (key type)
+get_cert_params(Cert) ->
+    #'OTPCertificate'{tbsCertificate = TBSCert,
+		      signatureAlgorithm =
+                          {_,SignAlgo, Param}} = public_key:pkix_decode_cert(Cert, otp),
+    #'OTPSubjectPublicKeyInfo'{algorithm = {_, PublicKeyAlgo, _}} =
+        TBSCert#'OTPTBSCertificate'.subjectPublicKeyInfo,
+    {SignAlgo, Param, PublicKeyAlgo}.
+
+
+get_signature_scheme(undefined) ->
+    undefined;
+get_signature_scheme(#signature_algorithms_cert{
+                        signature_scheme_list = ClientSignatureSchemes}) ->
+    ClientSignatureSchemes.
+
 
 %%--------------------------------------------------------------------
 -spec select_hashsign_algs({atom(), atom()}| undefined, oid(), ssl_record:ssl_version()) ->
@@ -1180,6 +1463,8 @@ extension_value(#ec_point_formats{ec_point_format_list = List}) ->
     List;
 extension_value(#elliptic_curves{elliptic_curve_list = List}) ->
     List;
+extension_value(#supported_groups{supported_groups = SupportedGroups}) ->
+    SupportedGroups;
 extension_value(#hash_sign_algos{hash_sign_algos = Algos}) ->
     Algos;
 extension_value(#alpn{extension_data = Data}) ->
@@ -1200,33 +1485,30 @@ int_to_bin(I) ->
     L = (length(integer_to_list(I, 16)) + 1) div 2,
     <<I:(L*8)>>.
 
-certificate_types(_, {N, M}) when N >= 3 andalso M >= 3 ->
-    case proplists:get_bool(ecdsa,  
-			    proplists:get_value(public_keys, crypto:supports())) of
-	true ->
-	    <<?BYTE(?ECDSA_SIGN), ?BYTE(?RSA_SIGN), ?BYTE(?DSS_SIGN)>>;
-	false ->
-	    <<?BYTE(?RSA_SIGN), ?BYTE(?DSS_SIGN)>>
-    end;
-
-certificate_types(#{key_exchange := KeyExchange}, _) when KeyExchange == rsa;
-                                                          KeyExchange == dh_rsa;
-                                                          KeyExchange == dhe_rsa;
-                                                          KeyExchange == ecdhe_rsa ->
-    <<?BYTE(?RSA_SIGN)>>;
-
-certificate_types(#{key_exchange := KeyExchange}, _)  when KeyExchange == dh_dss; 
-                                                           KeyExchange == dhe_dss;
-                                                           KeyExchange == srp_dss ->
-    <<?BYTE(?DSS_SIGN)>>;
-
-certificate_types(#{key_exchange := KeyExchange}, _) when KeyExchange == dh_ecdsa;
-                                                          KeyExchange == dhe_ecdsa;
-                                                          KeyExchange == ecdh_ecdsa;
-                                                          KeyExchange == ecdhe_ecdsa ->
-    <<?BYTE(?ECDSA_SIGN)>>;
+%% TLS 1.0+
+%% The end-entity certificate provided by the client MUST contain a
+%% key that is compatible with certificate_types.
+certificate_types(_, {N, M}) when N >= 3 andalso M >= 1 ->
+    ECDSA = supported_cert_type_or_empty(ecdsa, ?ECDSA_SIGN),
+    RSA = supported_cert_type_or_empty(rsa, ?RSA_SIGN),
+    DSS = supported_cert_type_or_empty(dss, ?DSS_SIGN),
+    <<ECDSA/binary,RSA/binary,DSS/binary>>;
+%% SSL 3.0
 certificate_types(_, _) ->
-    <<?BYTE(?RSA_SIGN)>>.
+    RSA = supported_cert_type_or_empty(rsa, ?RSA_SIGN),
+    DSS = supported_cert_type_or_empty(dss, ?DSS_SIGN),
+    <<RSA/binary,DSS/binary>>.
+
+%% Returns encoded certificate_type if algorithm is supported
+supported_cert_type_or_empty(Algo, Type) ->
+    case proplists:get_bool(
+           Algo,
+           proplists:get_value(public_keys, crypto:supports())) of
+        true ->
+            <<?BYTE(Type)>>;
+        false ->
+            <<>>
+    end.
 
 certificate_authorities(CertDbHandle, CertDbRef) ->
     Authorities = certificate_authorities_from_db(CertDbHandle, CertDbRef),
@@ -1769,16 +2051,32 @@ encode_alpn(undefined, _) ->
 encode_alpn(Protocols, _) ->
     #alpn{extension_data = lists:foldl(fun encode_protocol/2, <<>>, Protocols)}.
 
-hello_extensions_list(#hello_extensions{renegotiation_info = RenegotiationInfo,
-					srp = SRP,
-					signature_algs = HashSigns,
-					ec_point_formats = EcPointFormats,
-					elliptic_curves = EllipticCurves,
-                                        alpn = ALPN,
-					next_protocol_negotiation = NextProtocolNegotiation,
-					sni = Sni}) ->
-    [Ext || Ext <- [RenegotiationInfo, SRP, HashSigns,
-		    EcPointFormats, EllipticCurves, ALPN, NextProtocolNegotiation, Sni], Ext =/= undefined].
+
+encode_versions(Versions) ->
+    encode_versions(lists:reverse(Versions), <<>>).
+%%
+encode_versions([], Acc) ->
+    Acc;
+encode_versions([{M,N}|T], Acc) ->
+    encode_versions(T, <<?BYTE(M),?BYTE(N),Acc/binary>>).
+
+encode_client_shares(ClientShares) ->
+    encode_client_shares(ClientShares, <<>>).
+%%
+encode_client_shares([], Acc) ->
+    Acc;
+encode_client_shares([KeyShareEntry0|T], Acc) ->
+    KeyShareEntry = encode_key_share_entry(KeyShareEntry0),
+    encode_client_shares(T, <<Acc/binary,KeyShareEntry/binary>>).
+
+encode_key_share_entry(#key_share_entry{
+                          group = Group,
+                          key_exchange = KeyExchange}) ->
+    Len = byte_size(KeyExchange),
+    <<?UINT16((tls_v1:group_to_enum(Group))),?UINT16(Len),KeyExchange/binary>>.
+
+hello_extensions_list(HelloExtensions) ->
+    [Ext || {_, Ext} <- maps:to_list(HelloExtensions), Ext =/= undefined].
 
 %%-------------Decode handshakes---------------------------------
 dec_server_key(<<?UINT16(PLen), P:PLen/binary,
@@ -1918,16 +2216,60 @@ dec_server_key_signature(Params, <<?UINT16(Len), Signature:Len/binary>>, _) ->
 dec_server_key_signature(_, _, _) ->
     throw(?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, failed_to_decrypt_server_key_sign)).
 
-dec_hello_extensions(<<>>, Acc) ->
+%% Processes a ClientHello/ServerHello message and returns the version to be used
+%% in the decoding functions. The following rules apply:
+%% - IF supported_versions extension is absent:
+%%   RETURN the lowest of (LocalVersion and LegacyVersion)
+%% - IF supported_versions estension is present:
+%%   RETURN the lowest of (LocalVersion and first element of supported versions)
+process_supported_versions_extension(<<>>, LocalVersion, LegacyVersion)
+  when LegacyVersion =< LocalVersion ->
+    LegacyVersion;
+process_supported_versions_extension(<<>>, LocalVersion, _LegacyVersion) ->
+    LocalVersion;
+process_supported_versions_extension(<<?UINT16(?SUPPORTED_VERSIONS_EXT), ?UINT16(Len),
+                                       ExtData:Len/binary, _Rest/binary>>,
+                                     LocalVersion, _LegacyVersion) when Len > 2 ->
+    <<?BYTE(_),Versions0/binary>> = ExtData,
+    [Highest|_] = decode_versions(Versions0),
+    if Highest =< LocalVersion ->
+            Highest;
+       true ->
+            LocalVersion
+    end;
+process_supported_versions_extension(<<?UINT16(?SUPPORTED_VERSIONS_EXT), ?UINT16(Len),
+                                       ?BYTE(Major),?BYTE(Minor), _Rest/binary>>,
+                                     LocalVersion, _LegacyVersion) when Len =:= 2 ->
+    SelectedVersion = {Major, Minor},
+    if SelectedVersion =< LocalVersion ->
+            SelectedVersion;
+       true ->
+            LocalVersion
+    end;
+process_supported_versions_extension(<<?UINT16(_), ?UINT16(Len),
+                                       _ExtData:Len/binary, Rest/binary>>,
+                                     LocalVersion, LegacyVersion) ->
+    process_supported_versions_extension(Rest, LocalVersion, LegacyVersion);
+%% Tolerate protocol encoding errors and skip parsing the rest of the extension.
+process_supported_versions_extension(_, LocalVersion, LegacyVersion)
+  when LegacyVersion =< LocalVersion ->
+    LegacyVersion;
+process_supported_versions_extension(_, LocalVersion, _) ->
+    LocalVersion.
+
+decode_extensions(<<>>, _Version, _MessageType, Acc) ->
     Acc;
-dec_hello_extensions(<<?UINT16(?ALPN_EXT), ?UINT16(ExtLen), ?UINT16(Len), ExtensionData:Len/binary, Rest/binary>>, Acc)
-        when Len + 2 =:= ExtLen ->
+decode_extensions(<<?UINT16(?ALPN_EXT), ?UINT16(ExtLen), ?UINT16(Len),
+                    ExtensionData:Len/binary, Rest/binary>>, Version, MessageType, Acc)
+  when Len + 2 =:= ExtLen ->
     ALPN = #alpn{extension_data = ExtensionData},
-    dec_hello_extensions(Rest, Acc#hello_extensions{alpn = ALPN});
-dec_hello_extensions(<<?UINT16(?NEXTPROTONEG_EXT), ?UINT16(Len), ExtensionData:Len/binary, Rest/binary>>, Acc) ->
+    decode_extensions(Rest, Version, MessageType, Acc#{alpn => ALPN});
+decode_extensions(<<?UINT16(?NEXTPROTONEG_EXT), ?UINT16(Len),
+                    ExtensionData:Len/binary, Rest/binary>>, Version, MessageType, Acc) ->
     NextP = #next_protocol_negotiation{extension_data = ExtensionData},
-    dec_hello_extensions(Rest, Acc#hello_extensions{next_protocol_negotiation = NextP});
-dec_hello_extensions(<<?UINT16(?RENEGOTIATION_EXT), ?UINT16(Len), Info:Len/binary, Rest/binary>>, Acc) ->
+    decode_extensions(Rest, Version, MessageType, Acc#{next_protocol_negotiation => NextP});
+decode_extensions(<<?UINT16(?RENEGOTIATION_EXT), ?UINT16(Len),
+                    Info:Len/binary, Rest/binary>>, Version, MessageType, Acc) ->
     RenegotiateInfo = case Len of
 			  1 ->  % Initial handshake
 			      Info; % should be <<0>> will be matched in handle_renegotiation_info
@@ -1936,25 +2278,54 @@ dec_hello_extensions(<<?UINT16(?RENEGOTIATION_EXT), ?UINT16(Len), Info:Len/binar
 			      <<?BYTE(VerifyLen), VerifyInfo/binary>> = Info,
 			      VerifyInfo
 		      end,
-    dec_hello_extensions(Rest, Acc#hello_extensions{renegotiation_info =
-							#renegotiation_info{renegotiated_connection =
-										RenegotiateInfo}});
-
-dec_hello_extensions(<<?UINT16(?SRP_EXT), ?UINT16(Len), ?BYTE(SRPLen), SRP:SRPLen/binary, Rest/binary>>, Acc)
-  when Len == SRPLen + 2 ->
-    dec_hello_extensions(Rest,  Acc#hello_extensions{srp = #srp{username = SRP}});
-
-dec_hello_extensions(<<?UINT16(?SIGNATURE_ALGORITHMS_EXT), ?UINT16(Len),
-		       ExtData:Len/binary, Rest/binary>>, Acc) ->
+    decode_extensions(Rest, Version, MessageType,
+                      Acc#{renegotiation_info =>
+                               #renegotiation_info{renegotiated_connection =
+                                                       RenegotiateInfo}});
+
+decode_extensions(<<?UINT16(?SRP_EXT), ?UINT16(Len), ?BYTE(SRPLen),
+                    SRP:SRPLen/binary, Rest/binary>>, Version, MessageType, Acc)
+  when Len == SRPLen + 1 ->
+    decode_extensions(Rest, Version, MessageType, Acc#{srp => #srp{username = SRP}});
+
+decode_extensions(<<?UINT16(?SIGNATURE_ALGORITHMS_EXT), ?UINT16(Len),
+		       ExtData:Len/binary, Rest/binary>>, Version, MessageType, Acc)
+  when Version < {3,4} ->
     SignAlgoListLen = Len - 2,
     <<?UINT16(SignAlgoListLen), SignAlgoList/binary>> = ExtData,
     HashSignAlgos = [{ssl_cipher:hash_algorithm(Hash), ssl_cipher:sign_algorithm(Sign)} ||
 			<<?BYTE(Hash), ?BYTE(Sign)>> <= SignAlgoList],
-    dec_hello_extensions(Rest, Acc#hello_extensions{signature_algs =
-						    #hash_sign_algos{hash_sign_algos = HashSignAlgos}});
-
-dec_hello_extensions(<<?UINT16(?ELLIPTIC_CURVES_EXT), ?UINT16(Len),
-		       ExtData:Len/binary, Rest/binary>>, Acc) ->
+    decode_extensions(Rest, Version, MessageType,
+                      Acc#{signature_algs =>
+                               #hash_sign_algos{hash_sign_algos =
+                                                    HashSignAlgos}});
+
+decode_extensions(<<?UINT16(?SIGNATURE_ALGORITHMS_EXT), ?UINT16(Len),
+		       ExtData:Len/binary, Rest/binary>>, Version, MessageType, Acc)
+  when Version =:= {3,4} ->
+    SignSchemeListLen = Len - 2,
+    <<?UINT16(SignSchemeListLen), SignSchemeList/binary>> = ExtData,
+    SignSchemes = [ssl_cipher:signature_scheme(SignScheme) ||
+			<<?UINT16(SignScheme)>> <= SignSchemeList],
+    decode_extensions(Rest, Version, MessageType,
+                      Acc#{signature_algs =>
+                               #signature_algorithms{
+                                  signature_scheme_list = SignSchemes}});
+
+decode_extensions(<<?UINT16(?SIGNATURE_ALGORITHMS_CERT_EXT), ?UINT16(Len),
+		       ExtData:Len/binary, Rest/binary>>, Version, MessageType, Acc) ->
+    SignSchemeListLen = Len - 2,
+    <<?UINT16(SignSchemeListLen), SignSchemeList/binary>> = ExtData,
+    SignSchemes = [ssl_cipher:signature_scheme(SignScheme) ||
+			<<?UINT16(SignScheme)>> <= SignSchemeList],
+    decode_extensions(Rest, Version, MessageType,
+                      Acc#{signature_algs_cert =>
+                               #signature_algorithms_cert{
+                                  signature_scheme_list = SignSchemes}});
+
+decode_extensions(<<?UINT16(?ELLIPTIC_CURVES_EXT), ?UINT16(Len),
+		       ExtData:Len/binary, Rest/binary>>, Version, MessageType, Acc)
+  when Version < {3,4} ->
     <<?UINT16(_), EllipticCurveList/binary>> = ExtData,
     %% Ignore unknown curves
     Pick = fun(Enum) ->
@@ -1966,31 +2337,103 @@ dec_hello_extensions(<<?UINT16(?ELLIPTIC_CURVES_EXT), ?UINT16(Len),
 		   end
 	   end,
     EllipticCurves = lists:filtermap(Pick, [ECC || <<ECC:16>> <= EllipticCurveList]),
-    dec_hello_extensions(Rest, Acc#hello_extensions{elliptic_curves =
-							#elliptic_curves{elliptic_curve_list =
-									     EllipticCurves}});
-dec_hello_extensions(<<?UINT16(?EC_POINT_FORMATS_EXT), ?UINT16(Len),
-		       ExtData:Len/binary, Rest/binary>>, Acc) ->
+    decode_extensions(Rest, Version, MessageType,
+                      Acc#{elliptic_curves =>
+                               #elliptic_curves{elliptic_curve_list =
+                                                    EllipticCurves}});
+
+decode_extensions(<<?UINT16(?ELLIPTIC_CURVES_EXT), ?UINT16(Len),
+		       ExtData:Len/binary, Rest/binary>>, Version, MessageType, Acc)
+  when Version =:= {3,4} ->
+    <<?UINT16(_), GroupList/binary>> = ExtData,
+    %% Ignore unknown curves
+    Pick = fun(Enum) ->
+		   case tls_v1:enum_to_group(Enum) of
+		       undefined ->
+			   false;
+		       Group ->
+			   {true, Group}
+		   end
+	   end,
+    SupportedGroups = lists:filtermap(Pick, [Group || <<Group:16>> <= GroupList]),
+    decode_extensions(Rest, Version, MessageType,
+                      Acc#{elliptic_curves =>
+                               #supported_groups{supported_groups =
+                                                     SupportedGroups}});
+
+decode_extensions(<<?UINT16(?EC_POINT_FORMATS_EXT), ?UINT16(Len),
+                    ExtData:Len/binary, Rest/binary>>, Version, MessageType, Acc) ->
     <<?BYTE(_), ECPointFormatList/binary>> = ExtData,
     ECPointFormats = binary_to_list(ECPointFormatList),
-    dec_hello_extensions(Rest, Acc#hello_extensions{ec_point_formats =
-							#ec_point_formats{ec_point_format_list =
-									      ECPointFormats}});
+    decode_extensions(Rest, Version, MessageType,
+                      Acc#{ec_point_formats =>
+                               #ec_point_formats{ec_point_format_list =
+                                                     ECPointFormats}});
+
+decode_extensions(<<?UINT16(?SNI_EXT), ?UINT16(Len),
+                    Rest/binary>>, Version, MessageType, Acc) when Len == 0 ->
+    decode_extensions(Rest, Version, MessageType,
+                      Acc#{sni => #sni{hostname = ""}}); %% Server may send an empy SNI
+
+decode_extensions(<<?UINT16(?SNI_EXT), ?UINT16(Len),
+                ExtData:Len/binary, Rest/binary>>, Version, MessageType, Acc) ->
+    <<?UINT16(_), NameList/binary>> = ExtData,
+    decode_extensions(Rest, Version, MessageType,
+                      Acc#{sni => dec_sni(NameList)});
+
+decode_extensions(<<?UINT16(?SUPPORTED_VERSIONS_EXT), ?UINT16(Len),
+                       ExtData:Len/binary, Rest/binary>>, Version, MessageType, Acc) when Len > 2 ->
+    <<?BYTE(_),Versions/binary>> = ExtData,
+    decode_extensions(Rest, Version, MessageType,
+                      Acc#{client_hello_versions =>
+                               #client_hello_versions{
+                                  versions = decode_versions(Versions)}});
+
+decode_extensions(<<?UINT16(?SUPPORTED_VERSIONS_EXT), ?UINT16(Len),
+                       ?UINT16(SelectedVersion), Rest/binary>>, Version, MessageType, Acc)
+  when Len =:= 2, SelectedVersion =:= 16#0304 ->
+    decode_extensions(Rest, Version, MessageType,
+                      Acc#{server_hello_selected_version =>
+                               #server_hello_selected_version{selected_version =
+                                                                  {3,4}}});
+
+decode_extensions(<<?UINT16(?KEY_SHARE_EXT), ?UINT16(Len),
+                       ExtData:Len/binary, Rest/binary>>,
+                  Version, MessageType = client_hello, Acc) ->
+    <<?UINT16(_),ClientShares/binary>> = ExtData,
+    decode_extensions(Rest, Version, MessageType,
+                      Acc#{key_share =>
+                               #key_share_client_hello{
+                                  client_shares = decode_client_shares(ClientShares)}});
+
+decode_extensions(<<?UINT16(?KEY_SHARE_EXT), ?UINT16(Len),
+                    ExtData:Len/binary, Rest/binary>>,
+                  Version, MessageType = server_hello, Acc) ->
+    <<?UINT16(Group),?UINT16(KeyLen),KeyExchange:KeyLen/binary>> = ExtData,
+    decode_extensions(Rest, Version, MessageType,
+                      Acc#{key_share =>
+                               #key_share_server_hello{
+                                  server_share =
+                                      #key_share_entry{
+                                         group = tls_v1:enum_to_group(Group),
+                                         key_exchange = KeyExchange}}});
+
+decode_extensions(<<?UINT16(?KEY_SHARE_EXT), ?UINT16(Len),
+                    ExtData:Len/binary, Rest/binary>>,
+                  Version, MessageType = hello_retry_request, Acc) ->
+    <<?UINT16(Group)>> = ExtData,
+    decode_extensions(Rest, Version, MessageType,
+                      Acc#{key_share =>
+                               #key_share_hello_retry_request{
+                                  selected_group = tls_v1:enum_to_group(Group)}});
 
-dec_hello_extensions(<<?UINT16(?SNI_EXT), ?UINT16(Len), Rest/binary>>, Acc) when Len == 0 ->
-    dec_hello_extensions(Rest, Acc#hello_extensions{sni = #sni{hostname = ""}}); %% Server may send an empy SNI
 
-dec_hello_extensions(<<?UINT16(?SNI_EXT), ?UINT16(Len),
-                ExtData:Len/binary, Rest/binary>>, Acc) ->
-    <<?UINT16(_), NameList/binary>> = ExtData,
-    dec_hello_extensions(Rest, Acc#hello_extensions{sni = dec_sni(NameList)});
 %% Ignore data following the ClientHello (i.e.,
 %% extensions) if not understood.
-
-dec_hello_extensions(<<?UINT16(_), ?UINT16(Len), _Unknown:Len/binary, Rest/binary>>, Acc) ->
-    dec_hello_extensions(Rest, Acc);
+decode_extensions(<<?UINT16(_), ?UINT16(Len), _Unknown:Len/binary, Rest/binary>>, Version, MessageType, Acc) ->
+    decode_extensions(Rest, Version, MessageType, Acc);
 %% This theoretically should not happen if the protocol is followed, but if it does it is ignored.
-dec_hello_extensions(_, Acc) ->
+decode_extensions(_, _, _, Acc) ->
     Acc.
 
 dec_hashsign(<<?BYTE(HashAlgo), ?BYTE(SignAlgo)>>) ->
@@ -2008,6 +2451,26 @@ decode_alpn(undefined) ->
 decode_alpn(#alpn{extension_data=Data}) ->
     decode_protocols(Data, []).
 
+decode_versions(Versions) ->
+    decode_versions(Versions, []).
+%%
+decode_versions(<<>>, Acc) ->
+    lists:reverse(Acc);
+decode_versions(<<?BYTE(M),?BYTE(N),Rest/binary>>, Acc) ->
+    decode_versions(Rest, [{M,N}|Acc]).
+
+
+decode_client_shares(ClientShares) ->
+    decode_client_shares(ClientShares, []).
+%%
+decode_client_shares(<<>>, Acc) ->
+    lists:reverse(Acc);
+decode_client_shares(<<?UINT16(Group),?UINT16(Len),KeyExchange:Len/binary,Rest/binary>>, Acc) ->
+    decode_client_shares(Rest, [#key_share_entry{
+                                   group = tls_v1:enum_to_group(Group),
+                                   key_exchange= KeyExchange
+                                  }|Acc]).
+
 decode_next_protocols({next_protocol_negotiation, Protocols}) ->
     decode_protocols(Protocols, []).
 
@@ -2189,30 +2652,26 @@ filter_unavailable_ecc_suites(_, Suites) ->
 handle_renegotiation_extension(Role, RecordCB, Version, Info, Random, NegotiatedCipherSuite, 
 			       ClientCipherSuites, Compression,
 			       ConnectionStates0, Renegotiation, SecureRenegotation) ->
-    case handle_renegotiation_info(RecordCB, Role, Info, ConnectionStates0,
-				   Renegotiation, SecureRenegotation,
-				   ClientCipherSuites) of
-	{ok, ConnectionStates} ->
-	    hello_pending_connection_states(RecordCB, Role,
-					    Version,
-					    NegotiatedCipherSuite,
-					    Random,
-					    Compression,
-					    ConnectionStates);
-	#alert{} = Alert ->
-	    throw(Alert)
-    end.
+    {ok, ConnectionStates} = handle_renegotiation_info(RecordCB, Role, Info, ConnectionStates0,
+                                                       Renegotiation, SecureRenegotation,
+                                                       ClientCipherSuites),
+    hello_pending_connection_states(RecordCB, Role,
+                                    Version,
+                                    NegotiatedCipherSuite,
+                                    Random,
+                                    Compression,
+                                    ConnectionStates).
 
 %% Receive protocols, choose one from the list, return it.
 handle_alpn_extension(_, {error, Reason}) ->
-    ?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, Reason);
+    throw(?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, Reason));
 handle_alpn_extension([], _) ->
-	?ALERT_REC(?FATAL, ?NO_APPLICATION_PROTOCOL);
+    throw(?ALERT_REC(?FATAL, ?NO_APPLICATION_PROTOCOL));
 handle_alpn_extension([ServerProtocol|Tail], ClientProtocols) ->
-	case lists:member(ServerProtocol, ClientProtocols) of
-		true -> ServerProtocol;
-		false -> handle_alpn_extension(Tail, ClientProtocols)
-	end.
+    case lists:member(ServerProtocol, ClientProtocols) of
+        true -> ServerProtocol;
+            false -> handle_alpn_extension(Tail, ClientProtocols)
+    end.
 
 handle_next_protocol(undefined,
 		     _NextProtocolSelector, _Renegotiating) ->
@@ -2225,14 +2684,14 @@ handle_next_protocol(#next_protocol_negotiation{} = NextProtocols,
         true ->
             select_next_protocol(decode_next_protocols(NextProtocols), NextProtocolSelector);
         false ->
-            ?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, unexpected_next_protocol_extension)
+            throw(?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, unexpected_next_protocol_extension))
     end.
 
 
 handle_next_protocol_extension(NextProtocolNegotiation, Renegotiation, SslOpts)->
     case handle_next_protocol_on_server(NextProtocolNegotiation, Renegotiation, SslOpts) of
 	#alert{} = Alert ->
-	    Alert;
+	    throw(Alert);
 	ProtocolsToAdvertise ->
 	    ProtocolsToAdvertise
     end.
@@ -2265,17 +2724,6 @@ handle_srp_extension(undefined, Session) ->
 handle_srp_extension(#srp{username = Username}, Session) ->
     Session#session{srp_username = Username}.
 
-
-sign_algo(?rsaEncryption) ->
-    rsa;
-sign_algo(?'id-ecPublicKey') ->
-    ecdsa;
-sign_algo(?'id-dsa') ->
-    dsa;
-sign_algo(Alg) ->
-    {_, Sign} =public_key:pkix_sign_types(Alg),
-    Sign.
-
 is_acceptable_hash_sign( _, KeyExAlgo, _) when 
       KeyExAlgo == psk;
       KeyExAlgo == dhe_psk;
@@ -2291,15 +2739,80 @@ is_acceptable_hash_sign(Algos,_, SupportedHashSigns) ->
 is_acceptable_hash_sign(Algos, SupportedHashSigns) ->
     lists:member(Algos, SupportedHashSigns).
 
-is_acceptable_cert_type(Sign, _HashSigns, Types) ->
+is_acceptable_cert_type(Sign, Types) ->
     lists:member(sign_type(Sign), binary_to_list(Types)).
 
-is_supported_sign(Sign, HashSigns) ->
-     [] =/=  lists:dropwhile(fun({_, S}) when S =/= Sign -> 
-				     true;
-				(_)-> 
-				     false 
-			     end, HashSigns).
+%% signature_algorithms_cert = undefined
+is_supported_sign(SignAlgo, _, HashSigns, undefined) ->
+    lists:member(SignAlgo, HashSigns);
+
+%% {'SignatureAlgorithm',{1,2,840,113549,1,1,11},'NULL'}
+is_supported_sign({Hash, Sign}, 'NULL', _, SignatureSchemes) ->
+    Fun = fun (Scheme, Acc) ->
+                  {H0, S0, _} = ssl_cipher:scheme_to_components(Scheme),
+                  S1 = case S0 of
+                             rsa_pkcs1 -> rsa;
+                             S -> S
+                         end,
+                  H1 = case H0 of
+                             sha1 -> sha;
+                             H -> H
+                         end,
+                  Acc orelse (Sign =:= S1 andalso
+                              Hash =:= H1)
+          end,
+    lists:foldl(Fun, false, SignatureSchemes);
+
+%% TODO: Implement validation for the curve used in the signature
+%% RFC 3279 - 2.2.3 ECDSA Signature Algorithm
+%% When the ecdsa-with-SHA1 algorithm identifier appears as the
+%% algorithm field in an AlgorithmIdentifier, the encoding MUST omit the
+%% parameters field.  That is, the AlgorithmIdentifier SHALL be a
+%% SEQUENCE of one component: the OBJECT IDENTIFIER ecdsa-with-SHA1.
+%%
+%% The elliptic curve parameters in the subjectPublicKeyInfo field of
+%% the certificate of the issuer SHALL apply to the verification of the
+%% signature.
+is_supported_sign({Hash, Sign}, _Param, _, SignatureSchemes) ->
+    Fun = fun (Scheme, Acc) ->
+                  {H0, S0, _} = ssl_cipher:scheme_to_components(Scheme),
+                  S1 = case S0 of
+                             rsa_pkcs1 -> rsa;
+                             S -> S
+                         end,
+                  H1 = case H0 of
+                             sha1 -> sha;
+                             H -> H
+                         end,
+                  Acc orelse (Sign  =:= S1 andalso
+                              Hash  =:= H1)
+          end,
+    lists:foldl(Fun, false, SignatureSchemes).
+
+%% SupportedPublicKeyAlgorithms PUBLIC-KEY-ALGORITHM-CLASS ::= {
+%%   dsa | rsa-encryption | dh  | kea  | ec-public-key }
+public_key_algo(?rsaEncryption) ->
+    rsa;
+public_key_algo(?'id-ecPublicKey') ->
+    ecdsa;
+public_key_algo(?'id-dsa') ->
+    dsa.
+
+%% SupportedSignatureAlgorithms SIGNATURE-ALGORITHM-CLASS ::= {
+%%   dsa-with-sha1 | dsaWithSHA1 |  md2-with-rsa-encryption |
+%%   md5-with-rsa-encryption | sha1-with-rsa-encryption | sha-1with-rsa-encryption |
+%%   sha224-with-rsa-encryption |
+%%   sha256-with-rsa-encryption |
+%%   sha384-with-rsa-encryption |
+%%   sha512-with-rsa-encryption |
+%%   ecdsa-with-sha1 |
+%%   ecdsa-with-sha224 |
+%%   ecdsa-with-sha256 |
+%%   ecdsa-with-sha384 |
+%%   ecdsa-with-sha512 }
+sign_algo(Alg) ->
+    public_key:pkix_sign_types(Alg).
+
 sign_type(rsa) ->
     ?RSA_SIGN;
 sign_type(dsa) ->
@@ -2318,6 +2831,11 @@ client_ecc_extensions(SupportedECCs) ->
     CryptoSupport = proplists:get_value(public_keys, crypto:supports()),
     case proplists:get_bool(ecdh, CryptoSupport) of
 	true ->
+            %% RFC 8422 - 5.1.  Client Hello Extensions
+            %% Clients SHOULD send both the Supported Elliptic Curves Extension and the
+            %% Supported Point Formats Extension.  If the Supported Point Formats
+            %% Extension is indeed sent, it MUST contain the value 0 (uncompressed)
+            %% as one of the items in the list of point formats.
 	    EcPointFormats = #ec_point_formats{ec_point_format_list = [?ECPOINT_UNCOMPRESSED]},
 	    EllipticCurves = SupportedECCs,
 	    {EcPointFormats, EllipticCurves};
@@ -2428,14 +2946,14 @@ handle_renegotiation_info(_RecordCB, client, #renegotiation_info{renegotiated_co
 	true ->
 	    {ok, ConnectionStates};
 	false ->
-            ?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, client_renegotiation)
+            throw(?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, client_renegotiation))
     end;
 handle_renegotiation_info(_RecordCB, server, #renegotiation_info{renegotiated_connection = ClientVerify},
 			  ConnectionStates, true, _, CipherSuites) ->
 
       case is_member(?TLS_EMPTY_RENEGOTIATION_INFO_SCSV, CipherSuites) of
 	  true ->
-              ?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, {server_renegotiation, empty_renegotiation_info_scsv});
+              throw(?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, {server_renegotiation, empty_renegotiation_info_scsv}));
 	  false ->
 	      ConnectionState = ssl_record:current_connection_state(ConnectionStates, read),
 	      Data =  maps:get(client_verify_data, ConnectionState),
@@ -2443,7 +2961,7 @@ handle_renegotiation_info(_RecordCB, server, #renegotiation_info{renegotiated_co
 		  true ->
 		      {ok, ConnectionStates};
 		  false ->
-                      ?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, server_renegotiation)
+                      throw(?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, server_renegotiation))
 	      end
       end;
 
@@ -2453,7 +2971,7 @@ handle_renegotiation_info(RecordCB, client, undefined, ConnectionStates, true, S
 handle_renegotiation_info(RecordCB, server, undefined, ConnectionStates, true, SecureRenegotation, CipherSuites) ->
      case is_member(?TLS_EMPTY_RENEGOTIATION_INFO_SCSV, CipherSuites) of
 	  true ->
-             ?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, {server_renegotiation, empty_renegotiation_info_scsv});
+             throw(?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, {server_renegotiation, empty_renegotiation_info_scsv}));
 	 false ->
 	     handle_renegotiation_info(RecordCB, ConnectionStates, SecureRenegotation)
      end.
@@ -2462,9 +2980,9 @@ handle_renegotiation_info(_RecordCB, ConnectionStates, SecureRenegotation) ->
     ConnectionState = ssl_record:current_connection_state(ConnectionStates, read),
     case {SecureRenegotation, maps:get(secure_renegotiation, ConnectionState)} of
 	{_, true} ->
-            ?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, already_secure);
+            throw(?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, already_secure));
 	{true, false} ->
-	    ?ALERT_REC(?FATAL, ?NO_RENEGOTIATION);
+	    throw(?ALERT_REC(?FATAL, ?NO_RENEGOTIATION));
 	{false, false} ->
 	    {ok, ConnectionStates}
     end.
@@ -2485,4 +3003,51 @@ cert_curve(Cert, ECCCurve0, CipherSuite) ->
             {ECCCurve0, CipherSuite}
     end.
 
-   
+empty_extensions() ->
+     #{}.
+
+empty_extensions({3,4}, client_hello) ->
+    #{
+      sni => undefined,
+      %% max_fragment_length => undefined,
+      %% status_request => undefined,
+      elliptic_curves => undefined,
+      signature_algs => undefined,
+      %% use_srtp => undefined,
+      %% heartbeat => undefined,
+      alpn => undefined,
+      %% signed_cert_timestamp => undefined,
+      %% client_cert_type => undefined,
+      %% server_cert_type => undefined,
+      %% padding => undefined,
+      key_share => undefined,
+      pre_shared_key => undefined,
+      %% psk_key_exhange_modes => undefined,
+      %% early_data => undefined,
+      %% cookie => undefined,
+      client_hello_versions => undefined,
+      %% cert_authorities => undefined,
+      %% post_handshake_auth => undefined,
+      signature_algs_cert => undefined
+     };
+empty_extensions({3, 3}, client_hello) ->
+    Ext = empty_extensions({3,2}, client_hello),
+    Ext#{signature_algs => undefined};
+empty_extensions(_, client_hello) ->
+    #{renegotiation_info => undefined,
+      alpn => undefined,
+      next_protocol_negotiation => undefined,
+      srp => undefined,
+      ec_point_formats => undefined,
+      elliptic_curves => undefined,
+      sni => undefined};
+empty_extensions({3,4}, server_hello) ->
+    #{server_hello_selected_version => undefined,
+      key_share => undefined,
+      pre_shared_key => undefined
+     };
+empty_extensions(_, server_hello) ->
+    #{renegotiation_info => undefined,
+      alpn => undefined,
+      next_protocol_negotiation => undefined,
+      ec_point_formats => undefined}.
diff --git a/lib/ssl/src/ssl_handshake.hrl b/lib/ssl/src/ssl_handshake.hrl
index a191fcf766..b248edcaa9 100644
--- a/lib/ssl/src/ssl_handshake.hrl
+++ b/lib/ssl/src/ssl_handshake.hrl
@@ -47,14 +47,15 @@
 	  srp_username,
 	  is_resumable,
 	  time_stamp,
-	  ecc
+	  ecc,                   %% TLS 1.3 Group
+	  sign_alg,              %% TLS 1.3 Signature Algorithm
+	  dh_public_value        %% TLS 1.3 DH Public Value from peer
 	  }).
 
 -define(NUM_OF_SESSION_ID_BYTES, 32).  % TSL 1.1 & SSL 3
 -define(NUM_OF_PREMASTERSECRET_BYTES, 48).
--define(DEFAULT_DIFFIE_HELLMAN_GENERATOR, 2).
--define(DEFAULT_DIFFIE_HELLMAN_PRIME,
-	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
+-define(DEFAULT_DIFFIE_HELLMAN_GENERATOR, ssl_dh_groups:modp2048_generator()).
+-define(DEFAULT_DIFFIE_HELLMAN_PRIME, ssl_dh_groups:modp2048_prime()).
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %%% Handsake protocol - RFC 4346 section 7.4
@@ -105,7 +106,11 @@
 	  srp,
 	  ec_point_formats,
 	  elliptic_curves,
-	  sni
+	  sni,
+          client_hello_versions,
+          server_hello_selected_version,
+          signature_algs_cert,
+          key_share
 	 }).
 
 -record(server_hello, {
@@ -313,12 +318,12 @@
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 -define(SIGNATURE_ALGORITHMS_EXT, 13).
 
--record(hash_sign_algos, {
-	  hash_sign_algos
-	 }).
+-record(hash_sign_algos, {hash_sign_algos}).
+%% RFC 8446 (TLS 1.3)
+-record(signature_algorithms, {signature_scheme_list}).
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%% Application-Layer Protocol Negotiation  RFC 7301
+%% RFC 7301 Application-Layer Protocol Negotiation  
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 -define(ALPN_EXT, 16).
@@ -338,9 +343,8 @@
 -record(next_protocol, {selected_protocol}).
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%% ECC Extensions RFC 4492 section 4 and 5
+%% ECC Extensions RFC 8422  section 4 and 5
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
 -define(ELLIPTIC_CURVES_EXT, 10).
 -define(EC_POINT_FORMATS_EXT, 11).
 
@@ -348,11 +352,18 @@
 	  elliptic_curve_list
 	 }).
 
+%% RFC 8446 (TLS 1.3) renamed the "elliptic_curve" extension.
+-record(supported_groups, {
+	  supported_groups
+	 }).
+
 -record(ec_point_formats, {
 	  ec_point_format_list
 	 }).
 
 -define(ECPOINT_UNCOMPRESSED, 0).
+%% Defined in RFC 4492, deprecated by RFC 8422
+%% RFC 8422 compliant implementations MUST not support the two formats below
 -define(ECPOINT_ANSIX962_COMPRESSED_PRIME, 1).
 -define(ECPOINT_ANSIX962_COMPRESSED_CHAR2, 2).
 
@@ -365,10 +376,11 @@
 -define(NAMED_CURVE, 3).
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%% Server name indication RFC 6066 section 3
+%% RFC 6066 Server name indication 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
--define(SNI_EXT, 16#0000).
+%% section 3
+-define(SNI_EXT, 0).
 
 %% enum { host_name(0), (255) } NameType;
 -define(SNI_NAMETYPE_HOST_NAME, 0).
@@ -377,4 +389,56 @@
           hostname = undefined
         }).
 
+%% Other possible values from RFC 6066, not supported
+-define(MAX_FRAGMENT_LENGTH, 1).
+-define(CLIENT_CERTIFICATE_URL, 2).
+-define(TRUSTED_CA_KEYS, 3).
+-define(TRUNCATED_HMAC, 4).
+-define(STATUS_REQUEST, 5).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% RFC 7250 Using Raw Public Keys in Transport Layer Security (TLS)
+%% and Datagram Transport Layer Security (DTLS)
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% Not supported
+-define(CLIENT_CERTIFICATE_TYPE, 19).            
+-define(SERVER_CERTIFICATE_TYPE, 20).         
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% RFC 6520 Transport Layer Security (TLS) and
+%% Datagram Transport Layer Security (DTLS) Heartbeat Extension
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% Not supported
+-define(HS_HEARTBEAT, 15).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% RFC 6962 Certificate Transparency     
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% Not supported
+-define(SIGNED_CERTIFICATE_TIMESTAMP, 18).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% RFC 7685  A Transport Layer Security (TLS) ClientHello Padding Extension
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% Not supported
+-define(PADDING, 21).
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% Supported Versions RFC 8446 (TLS 1.3) section 4.2.1 also affects TLS-1.2
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+-define(SUPPORTED_VERSIONS_EXT, 43).
+
+-record(client_hello_versions, {versions}).
+-record(server_hello_selected_version, {selected_version}).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% Signature Algorithms RFC 8446 (TLS 1.3) section 4.2.3 also affects TLS-1.2
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+-define(SIGNATURE_ALGORITHMS_CERT_EXT, 50).
+
+-record(signature_algorithms_cert, {signature_scheme_list}).
+
 -endif. % -ifdef(ssl_handshake).
diff --git a/lib/ssl/src/ssl_internal.hrl b/lib/ssl/src/ssl_internal.hrl
index 63e751440a..4ee0230d88 100644
--- a/lib/ssl/src/ssl_internal.hrl
+++ b/lib/ssl/src/ssl_internal.hrl
@@ -25,14 +25,13 @@
 
 -include_lib("public_key/include/public_key.hrl"). 
 
+-define(VSN, "8.2.6").
 -define(SECRET_PRINTOUT, "***").
 
 -type reason()            :: term().
 -type reply()             :: term().
 -type msg()               :: term().
 -type from()              :: term().
--type host()		  :: inet:ip_address() | inet:hostname().
--type session_id()        :: 0 | binary().
 -type certdb_ref()        :: reference().
 -type db_handle()         :: term().
 -type der_cert()          :: binary().
@@ -72,14 +71,40 @@
 -define(FALSE, 1).
 
 %% sslv3 is considered insecure due to lack of padding check (Poodle attack)
-%% Keep as interop with legacy software but do not support as default 
--define(ALL_AVAILABLE_VERSIONS, ['tlsv1.2', 'tlsv1.1', tlsv1, sslv3]).
+%% Keep as interop with legacy software but do not support as default
+%% tlsv1.0 and tlsv1.1 is now also considered legacy
+%% tlsv1.3 is under development (experimental).
+-define(ALL_AVAILABLE_VERSIONS, ['tlsv1.3', 'tlsv1.2', 'tlsv1.1', tlsv1, sslv3]).
 -define(ALL_AVAILABLE_DATAGRAM_VERSIONS, ['dtlsv1.2', dtlsv1]).
--define(ALL_SUPPORTED_VERSIONS, ['tlsv1.2', 'tlsv1.1', tlsv1]).
--define(MIN_SUPPORTED_VERSIONS, ['tlsv1.1', tlsv1]).
--define(ALL_DATAGRAM_SUPPORTED_VERSIONS, ['dtlsv1.2', dtlsv1]).
+%% Defines the default versions when not specified by an ssl option.
+-define(ALL_SUPPORTED_VERSIONS, ['tlsv1.2']).
+-define(MIN_SUPPORTED_VERSIONS, ['tlsv1.1']).
+
+%% Versions allowed in TLSCiphertext.version (TLS 1.2 and prior) and
+%% TLSCiphertext.legacy_record_version (TLS 1.3).
+%% TLS 1.3 sets TLSCiphertext.legacy_record_version to 0x0303 for all records
+%% generated other than an than an initial ClientHello, where it MAY also be 0x0301.
+%% Thus, the allowed range is limited to 0x0300 - 0x0303.
+-define(ALL_TLS_RECORD_VERSIONS, ['tlsv1.2', 'tlsv1.1', tlsv1, sslv3]).
+
+-define(ALL_DATAGRAM_SUPPORTED_VERSIONS, ['dtlsv1.2']).
 -define(MIN_DATAGRAM_SUPPORTED_VERSIONS, [dtlsv1]).
 
+%% TLS 1.3 - Section 4.1.3
+%%
+%% If negotiating TLS 1.2, TLS 1.3 servers MUST set the last eight bytes
+%% of their Random value to the bytes:
+%%
+%%   44 4F 57 4E 47 52 44 01
+%%
+%% If negotiating TLS 1.1 or below, TLS 1.3 servers MUST and TLS 1.2
+%% servers SHOULD set the last eight bytes of their Random value to the
+%% bytes:
+%%
+%%   44 4F 57 4E 47 52 44 00
+-define(RANDOM_OVERRIDE_TLS12, <<16#44,16#4F,16#57,16#4E,16#47,16#52,16#44,16#01>>).
+-define(RANDOM_OVERRIDE_TLS11, <<16#44,16#4F,16#57,16#4E,16#47,16#52,16#44,16#00>>).
+
 -define('24H_in_msec', 86400000).
 -define('24H_in_sec', 86400).
 
@@ -98,7 +123,8 @@
 	  cert                 :: public_key:der_encoded() | secret_printout() | 'undefined',
 	  keyfile              :: binary(),
 	  key	               :: {'RSAPrivateKey' | 'DSAPrivateKey' | 'ECPrivateKey' | 'PrivateKeyInfo', 
-                                   public_key:der_encoded()} | key_map() | secret_printout() | 'undefined',
+                                   public_key:der_encoded()} | map()  %%map() -> ssl:key() how to handle dialyzer?
+                                | secret_printout() | 'undefined',
 	  password	       :: string() | secret_printout() | 'undefined',
 	  cacerts              :: [public_key:der_encoded()] | secret_printout() | 'undefined',
 	  cacertfile           :: binary(),
@@ -111,10 +137,10 @@
 	  %% Local policy for the server if it want's to reuse the session
 	  %% or not. Defaluts to allways returning true.
 	  %% fun(SessionId, PeerCert, Compression, CipherSuite) -> boolean()
-	  reuse_session,  
+	  reuse_session        :: fun() | binary() | undefined, %% Server side is a fun()
 	  %% If false sessions will never be reused, if true they
 	  %% will be reused if possible.
-	  reuse_sessions       :: boolean(),
+	  reuse_sessions       :: boolean() | save,  %% Only client side can use value save
 	  renegotiate_at,
 	  secure_renegotiate,
 	  client_renegotiation,
@@ -128,7 +154,7 @@
           alpn_preferred_protocols = undefined  :: [binary()] | undefined,
 	  next_protocols_advertised = undefined :: [binary()] | undefined,
 	  next_protocol_selector = undefined,  %% fun([binary()]) -> binary())
-	  log_alert             :: boolean(),
+	  log_level = notice :: atom(),
 	  server_name_indication = undefined,
 	  sni_hosts  :: [{inet:hostname(), [tuple()]}],
 	  sni_fun :: function() | undefined,
@@ -143,11 +169,15 @@
 	  crl_check                  :: boolean() | peer | best_effort, 
 	  crl_cache,
 	  signature_algs,
+	  signature_algs_cert,
 	  eccs,
+	  supported_groups,  %% RFC 8422, RFC 8446
 	  honor_ecc_order            :: boolean(),
           max_handshake_size         :: integer(),
           handshake,
           customize_hostname_check
+    %%                 ,
+      %%    save_session               :: boolean()            
          }).
 
 -record(socket_options,
@@ -168,19 +198,12 @@
 		 connection_cb
 		}).
 
--type key_map()              :: #{algorithm := rsa | dss | ecdsa,
-                                  %% engine and key_id ought to 
-                                  %% be :=, but putting it in
-                                  %% the spec gives dialyzer warning
-                                  %% of correct code!
-                                  engine => crypto:engine_ref(),
-                                  key_id => crypto:key_id(),
-                                  password => crypto:password()
-                                 }.
 -type state_name()           :: hello | abbreviated | certify | cipher | connection.
 -type gen_fsm_state_return() :: {next_state, state_name(), term()} |
 				{next_state, state_name(), term(), timeout()} |
 				{stop, term(), term()}.
+-type ssl_options()          :: #ssl_options{}.
+
 -endif. % -ifdef(ssl_internal).
 
 
diff --git a/lib/ssl/src/ssl_logger.erl b/lib/ssl/src/ssl_logger.erl
new file mode 100644
index 0000000000..f497315235
--- /dev/null
+++ b/lib/ssl/src/ssl_logger.erl
@@ -0,0 +1,438 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 1999-2019. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+-module(ssl_logger).
+
+-export([debug/4,
+         format/2,
+         notice/2]).
+
+-define(DEC2HEX(X),
+        if ((X) >= 0) andalso ((X) =< 9) -> (X) + $0;
+           ((X) >= 10) andalso ((X) =< 15) -> (X) + $a - 10
+        end).
+
+-define(rec_info(T,R),lists:zip(record_info(fields,T),tl(tuple_to_list(R)))).
+
+-include("tls_record.hrl").
+-include("ssl_cipher.hrl").
+-include("ssl_internal.hrl").
+-include("tls_handshake.hrl").
+-include("dtls_handshake.hrl").
+-include("tls_handshake_1_3.hrl").
+-include_lib("kernel/include/logger.hrl").
+
+%%-------------------------------------------------------------------------
+%% External API
+%%-------------------------------------------------------------------------
+
+%% SSL log formatter
+format(#{level:= _Level, msg:= {report, Msg}, meta:= _Meta}, _Config0) ->
+     #{direction := Direction,
+       protocol := Protocol,
+       message := Content} = Msg,
+    case Protocol of
+        'record' ->
+            BinMsg =
+                case Content of
+                    #ssl_tls{} ->
+                        [tls_record:build_tls_record(Content)];
+                    _ when is_list(Content) ->
+                        lists:flatten(Content)
+                end,
+            format_tls_record(Direction, BinMsg);
+        'handshake' ->
+            format_handshake(Direction, Content);
+        _Other ->
+            []
+    end.
+
+%% Stateful logging
+debug(Level, Direction, Protocol, Message)
+  when (Direction =:= inbound orelse Direction =:= outbound) andalso
+       (Protocol =:= 'record' orelse Protocol =:= 'handshake') ->
+    case logger:compare_levels(Level, debug) of
+        lt ->
+            ?LOG_DEBUG(#{direction => Direction,
+                         protocol => Protocol,
+                         message => Message},
+                       #{domain => [otp,ssl,Protocol]});
+        eq ->
+            ?LOG_DEBUG(#{direction => Direction,
+                         protocol => Protocol,
+                         message => Message},
+                       #{domain => [otp,ssl,Protocol]});
+        _ ->
+            ok
+    end.
+
+%% Stateful logging
+notice(Level, Report) ->
+    case logger:compare_levels(Level, notice) of
+        lt ->
+            ?LOG_NOTICE(Report);
+        eq ->
+            ?LOG_NOTICE(Report);
+        _ ->
+            ok
+    end.
+
+
+%%-------------------------------------------------------------------------
+%% Handshake Protocol
+%%-------------------------------------------------------------------------
+format_handshake(Direction, BinMsg) ->
+    {Header, Message} = parse_handshake(Direction, BinMsg),
+    io_lib:format("~s~n~s~n", [Header, Message]).
+
+
+parse_handshake(Direction, #client_hello{
+                              client_version = Version0,
+                              cipher_suites = CipherSuites0,
+                              extensions = Extensions
+                             } = ClientHello) ->
+    Version = get_client_version(Version0, Extensions),
+    Header = io_lib:format("~s ~s Handshake, ClientHello",
+                           [header_prefix(Direction),
+                            version(Version)]),
+    CipherSuites = parse_cipher_suites(CipherSuites0),
+    Message = io_lib:format("~p",
+                            [?rec_info(client_hello,
+                                       ClientHello#client_hello{cipher_suites = CipherSuites})]),
+    {Header, Message};
+parse_handshake(Direction, #server_hello{
+                              server_version = Version0,
+                              cipher_suite = CipherSuite0,
+                              extensions = Extensions
+                             } = ServerHello) ->
+    Version = get_server_version(Version0, Extensions),
+    Header = io_lib:format("~s ~s Handshake, ServerHello",
+                           [header_prefix(Direction),
+                            version(Version)]),
+    CipherSuite = format_cipher(CipherSuite0),
+    Message = io_lib:format("~p",
+                            [?rec_info(server_hello,
+                                       ServerHello#server_hello{cipher_suite = CipherSuite})]),
+    {Header, Message};
+parse_handshake(Direction, #hello_verify_request{} = HelloVerifyRequest) ->
+    Header = io_lib:format("~s Handshake, HelloVerifyRequest",
+                           [header_prefix(Direction)]),
+    Message = io_lib:format("~p", [?rec_info(hello_verify_request, HelloVerifyRequest)]),
+    {Header, Message};
+parse_handshake(Direction, #certificate{} = Certificate) ->
+    Header = io_lib:format("~s Handshake, Certificate",
+                           [header_prefix(Direction)]),
+    Message = io_lib:format("~p", [?rec_info(certificate, Certificate)]),
+    {Header, Message};
+parse_handshake(Direction, #server_key_exchange{} = ServerKeyExchange) ->
+    Header = io_lib:format("~s Handshake, ServerKeyExchange",
+                           [header_prefix(Direction)]),
+    Message = io_lib:format("~p", [?rec_info(server_key_exchange, ServerKeyExchange)]),
+    {Header, Message};
+parse_handshake(Direction, #server_key_params{} = ServerKeyExchange) ->
+    Header = io_lib:format("~s Handshake, ServerKeyExchange",
+                           [header_prefix(Direction)]),
+    Message = io_lib:format("~p", [?rec_info(server_key_params, ServerKeyExchange)]),
+    {Header, Message};
+parse_handshake(Direction, #certificate_request{} = CertificateRequest) ->
+    Header = io_lib:format("~s Handshake, CertificateRequest",
+                           [header_prefix(Direction)]),
+    Message = io_lib:format("~p", [?rec_info(certificate_request, CertificateRequest)]),
+    {Header, Message};
+parse_handshake(Direction, #server_hello_done{} = ServerHelloDone) ->
+    Header = io_lib:format("~s Handshake, ServerHelloDone",
+                           [header_prefix(Direction)]),
+    Message = io_lib:format("~p", [?rec_info(server_hello_done, ServerHelloDone)]),
+    {Header, Message};
+parse_handshake(Direction, #client_key_exchange{} = ClientKeyExchange) ->
+    Header = io_lib:format("~s Handshake, ClientKeyExchange",
+                           [header_prefix(Direction)]),
+    Message = io_lib:format("~p", [?rec_info(client_key_exchange, ClientKeyExchange)]),
+    {Header, Message};
+parse_handshake(Direction, #certificate_verify{} = CertificateVerify) ->
+    Header = io_lib:format("~s Handshake, CertificateVerify",
+                           [header_prefix(Direction)]),
+    Message = io_lib:format("~p", [?rec_info(certificate_verify, CertificateVerify)]),
+    {Header, Message};
+parse_handshake(Direction, #finished{} = Finished) ->
+    Header = io_lib:format("~s Handshake, Finished",
+                           [header_prefix(Direction)]),
+    Message = io_lib:format("~p", [?rec_info(finished, Finished)]),
+    {Header, Message};
+parse_handshake(Direction, #hello_request{} = HelloRequest) ->
+    Header = io_lib:format("~s Handshake, HelloRequest",
+                           [header_prefix(Direction)]),
+    Message = io_lib:format("~p", [?rec_info(hello_request, HelloRequest)]),
+    {Header, Message};
+parse_handshake(Direction, #certificate_request_1_3{} = CertificateRequest) ->
+    Header = io_lib:format("~s Handshake, CertificateRequest",
+                           [header_prefix(Direction)]),
+    Message = io_lib:format("~p", [?rec_info(certificate_request_1_3, CertificateRequest)]),
+    {Header, Message};
+parse_handshake(Direction, #certificate_1_3{} = Certificate) ->
+    Header = io_lib:format("~s Handshake, Certificate",
+                           [header_prefix(Direction)]),
+    Message = io_lib:format("~p", [?rec_info(certificate_1_3, Certificate)]),
+    {Header, Message};
+parse_handshake(Direction, #certificate_verify_1_3{} = CertificateVerify) ->
+    Header = io_lib:format("~s Handshake, CertificateVerify",
+                           [header_prefix(Direction)]),
+    Message = io_lib:format("~p", [?rec_info(certificate_verify_1_3, CertificateVerify)]),
+    {Header, Message};
+parse_handshake(Direction, #encrypted_extensions{} = EncryptedExtensions) ->
+    Header = io_lib:format("~s Handshake, EncryptedExtensions",
+                           [header_prefix(Direction)]),
+    Message = io_lib:format("~p", [?rec_info(encrypted_extensions, EncryptedExtensions)]),
+    {Header, Message}.
+
+
+parse_cipher_suites([_|_] = Ciphers) ->
+    [format_cipher(C) || C <- Ciphers].
+
+format_cipher(?TLS_EMPTY_RENEGOTIATION_INFO_SCSV) ->
+    'TLS_EMPTY_RENEGOTIATION_INFO_SCSV';
+format_cipher(C0) ->
+    list_to_atom(ssl_cipher_format:openssl_suite_name(C0)).
+
+get_client_version(Version, Extensions) ->
+    CHVersions = maps:get(client_hello_versions, Extensions, undefined),
+    case CHVersions of
+        #client_hello_versions{versions = [Highest|_]} ->
+            Highest;
+        undefined ->
+            Version
+    end.
+
+get_server_version(Version, Extensions) ->
+    SHVersion = maps:get(server_hello_selected_version, Extensions, undefined),
+    case SHVersion of
+        #server_hello_selected_version{selected_version = SelectedVersion} ->
+            SelectedVersion;
+        undefined ->
+            Version
+    end.
+
+version({3,4}) ->
+    "TLS 1.3";
+version({3,3}) ->
+    "TLS 1.2";
+version({3,2}) ->
+    "TLS 1.1";
+version({3,1}) ->
+    "TLS 1.0";
+version({3,0}) ->
+    "SSL 3.0";
+version({254,253}) ->
+    "DTLS 1.2";
+version({254,255}) ->
+    "DTLS 1.0";
+version({M,N}) ->
+    io_lib:format("TLS/DTLS [0x0~B0~B]", [M,N]).
+
+header_prefix(inbound) ->
+    "<<<";
+header_prefix(outbound) ->
+    ">>>".
+
+
+%%-------------------------------------------------------------------------
+%% TLS Record Protocol
+%%-------------------------------------------------------------------------
+format_tls_record(Direction, BinMsg) ->
+    {Message, Size} = convert_to_hex('tls_record', BinMsg),
+    Header = io_lib:format("~s (~B bytes) ~s~n",
+                           [header_prefix_tls_record(Direction),
+                            Size,
+                            tls_record_version(BinMsg)]),
+    Header ++ Message.
+
+
+header_prefix_tls_record(inbound) ->
+    "reading";
+header_prefix_tls_record(outbound) ->
+    "writing".
+
+
+tls_record_version([<<?BYTE(B),?BYTE(3),?BYTE(3),_/binary>>|_]) ->
+    io_lib:format("TLS 1.2 Record Protocol, ~s", [msg_type(B)]);
+tls_record_version([<<?BYTE(B),?BYTE(3),?BYTE(2),_/binary>>|_]) ->
+    io_lib:format("TLS 1.1 Record Protocol, ~s", [msg_type(B)]);
+tls_record_version([<<?BYTE(B),?BYTE(3),?BYTE(1),_/binary>>|_]) ->
+    io_lib:format("TLS 1.0 Record Protocol, ~s", [msg_type(B)]);
+tls_record_version([<<?BYTE(B),?BYTE(3),?BYTE(0),_/binary>>|_]) ->
+    io_lib:format("SSL 3.0 Record Protocol, ~s", [msg_type(B)]);
+tls_record_version([<<?BYTE(B),?BYTE(254),?BYTE(253),_/binary>>|_]) ->
+    io_lib:format("DTLS 1.2 Record Protocol, ~s", [msg_type(B)]);
+tls_record_version([<<?BYTE(B),?BYTE(254),?BYTE(255),_/binary>>|_]) ->
+    io_lib:format("DTLS 1.0 Record Protocol, ~s", [msg_type(B)]);
+tls_record_version([<<?BYTE(B),?BYTE(M),?BYTE(N),_/binary>>|_]) ->
+    io_lib:format("TLS/DTLS [0x0~B0~B] Record Protocol, ~s", [M, N, msg_type(B)]).
+
+
+msg_type(20) -> "change_cipher_spec";
+msg_type(21) -> "alert";
+msg_type(22) -> "handshake";
+msg_type(23) -> "application_data";
+msg_type(_) -> unknown.
+
+
+%%-------------------------------------------------------------------------
+%% Hex encoding functions
+%%-------------------------------------------------------------------------
+convert_to_hex(Protocol, BinMsg) ->
+    convert_to_hex(Protocol, BinMsg, [], [], 0).
+%%
+convert_to_hex(P, [], Row0, Acc, C) when C rem 16 =:= 0 ->
+    Row = lists:reverse(end_row(P, Row0)),
+    {lists:reverse(Acc) ++ Row ++ io_lib:nl(), C};
+convert_to_hex(P, [], Row0, Acc, C) ->
+    Row = lists:reverse(end_row(P, Row0)),
+    Padding = calculate_padding(Row0, Acc),
+    PaddedRow = string:pad(Row, Padding, leading, $ ),
+    {lists:reverse(Acc) ++ PaddedRow ++ io_lib:nl(), C};
+convert_to_hex(P, [H|T], Row, Acc, C) when is_list(H) ->
+    convert_to_hex(P, H ++ T, Row, Acc, C);
+convert_to_hex(P, [<<>>|T], Row, Acc, C) ->
+    convert_to_hex(P, T, Row, Acc, C);
+
+%% First line
+convert_to_hex(P, [<<A:4,B:4,R/binary>>|T], Row, Acc, C) when C =:= 0 ->
+    convert_to_hex(P, [<<R/binary>>|T],
+                   update_row(<<A:4,B:4>>, Row),
+                   prepend_first_row(P, A, B, Acc, C),
+                   C + 1);
+%% New line
+convert_to_hex(P, [<<A:4,B:4,R/binary>>|T], Row, Acc, C) when C rem 16 =:= 0 ->
+    convert_to_hex(P, [<<R/binary>>|T],
+                   update_row(<<A:4,B:4>>, []),
+                   prepend_row(P, A, B, Row, Acc, C),
+                   C + 1);
+%% Add 8th hex with extra whitespace
+%% 0000 - 16 03 02 00 bd 01 00 00  b9 ...
+%%                             ^^^^
+convert_to_hex(P, [<<A:4,B:4,R/binary>>|T], Row, Acc, C) when C rem 8 =:= 7 ->
+    convert_to_hex(P, [<<R/binary>>|T],
+                   update_row(<<A:4,B:4>>, Row),
+                   prepend_eighths_hex(A, B, Acc),
+                   C + 1);
+convert_to_hex(P, [<<A:4,B:4,R/binary>>|T], Row, Acc, C) ->
+    convert_to_hex(P, [<<R/binary>>|T],
+                   update_row(<<A:4,B:4>>, Row),
+                   prepend_hex(A, B, Acc),
+                   C + 1);
+%% First line
+convert_to_hex(P, [H|T], Row, Acc, C) when is_integer(H), C =:= 0 ->
+    convert_to_hex(P, T,
+                   update_row(H, Row),
+                   prepend_first_row(P, H, Acc, C),
+                   C + 1);
+%% New line
+convert_to_hex(P, [H|T], Row, Acc, C) when is_integer(H), C rem 16 =:= 0 ->
+    convert_to_hex(P, T,
+                   update_row(H, []),
+                   prepend_row(P, H, Row, Acc, C),
+                   C + 1);
+%% Add 8th hex with extra whitespace
+%% 0000 - 16 03 02 00 bd 01 00 00  b9 ...
+%%                             ^^^^
+convert_to_hex(P, [H|T], Row, Acc, C) when is_integer(H), C rem 8 =:= 7 ->
+    convert_to_hex(P, T,
+                   update_row(H, Row),
+                   prepend_eighths_hex(H, Acc),
+                   C + 1);
+convert_to_hex(P, [H|T], Row, Acc, C) when is_integer(H) ->
+    convert_to_hex(P, T,
+                   update_row(H, Row),
+                   prepend_hex(H, Acc),
+                   C + 1).
+
+
+row_prefix(_ , N) ->
+    S = string:pad(string:to_lower(erlang:integer_to_list(N, 16)),4,leading,$0),
+    lists:reverse(lists:flatten(S ++ " - ")).
+
+
+end_row(_, Row) ->
+    Row ++ "  ".
+
+
+%% Calculate padding of the "printable character" lines in order to be
+%% visually aligned.
+calculate_padding(Row, Acc) ->
+    %% Number of new line characters
+    NNL = (length(Acc) div 75) * length(io_lib:nl()),
+    %% Length of the last printed line
+    Length = (length(Acc) - NNL) rem 75,
+    %% Adjusted length of the last printed line
+    PaddedLength = 75 - (16 - length(Row)), %% Length
+    %% Padding
+    PaddedLength - Length.
+
+
+%%-------------------------------------------------------------------------
+%% Functions operating on reversed lists
+%%-------------------------------------------------------------------------
+update_row(B, Row) when is_binary(B) ->
+    case binary_to_list(B) of
+        [C] when 32 =< C, C =< 126 ->
+            [C|Row];
+        _Else ->
+            [$.|Row]
+    end;
+update_row(C, Row) when 32 =< C, C =< 126 ->
+    [C|Row];
+update_row(_, Row) ->
+    [$.|Row].
+
+
+prepend_first_row(P, A, B, Acc, C) ->
+    prepend_hex(A, B,row_prefix(P, C) ++ Acc).
+%%
+prepend_first_row(P, N, Acc, C) ->
+    prepend_hex(N,row_prefix(P, C) ++ Acc).
+
+prepend_row(P, A, B, Row, Acc, C) ->
+    prepend_hex(A, B,row_prefix(P, C) ++ io_lib:nl() ++ end_row(P, Row) ++ Acc).
+%%
+prepend_row(P, N, Row, Acc, C) ->
+    prepend_hex(N,row_prefix(P, C) ++ io_lib:nl() ++ end_row(P, Row) ++ Acc).
+
+
+
+prepend_hex(A, B, Acc) ->
+    [$ ,?DEC2HEX(B),?DEC2HEX(A)|Acc].
+%%
+prepend_hex(N, Acc) ->
+    " " ++ number_to_hex(N) ++ Acc.
+
+
+prepend_eighths_hex(A, B, Acc) ->
+    [$ ,$ ,?DEC2HEX(B),?DEC2HEX(A)|Acc].
+%%
+prepend_eighths_hex(N, Acc) ->
+    "  " ++ number_to_hex(N) ++ Acc.
+
+number_to_hex(N) ->
+    case string:to_lower(erlang:integer_to_list(N, 16)) of
+        H when length(H) < 2 ->
+            lists:append(H, "0");
+        H ->
+            lists:reverse(H)
+    end.
diff --git a/lib/ssl/src/ssl_manager.erl b/lib/ssl/src/ssl_manager.erl
index 4b735b2400..456a560bf6 100644
--- a/lib/ssl/src/ssl_manager.erl
+++ b/lib/ssl/src/ssl_manager.erl
@@ -30,7 +30,7 @@
 	 connection_init/3, cache_pem_file/2,
 	 lookup_trusted_cert/4,
 	 new_session_id/1, clean_cert_db/2,
-	 register_session/2, register_session/3, invalidate_session/2,
+	 register_session/2, register_session/4, invalidate_session/2,
 	 insert_crls/2, insert_crls/3, delete_crls/1, delete_crls/2, 
 	 invalidate_session/3, name/1]).
 
@@ -42,6 +42,8 @@
 
 -include("ssl_handshake.hrl").
 -include("ssl_internal.hrl").
+-include("ssl_api.hrl").
+
 -include_lib("kernel/include/file.hrl").
 
 -record(state, {
@@ -148,7 +150,7 @@ lookup_trusted_cert(DbHandle, Ref, SerialNumber, Issuer) ->
     ssl_pkix_db:lookup_trusted_cert(DbHandle, Ref, SerialNumber, Issuer).
 
 %%--------------------------------------------------------------------
--spec new_session_id(integer()) -> session_id().
+-spec new_session_id(integer()) -> ssl:session_id().
 %%
 %% Description: Creates a session id for the server.
 %%--------------------------------------------------------------------
@@ -170,9 +172,11 @@ clean_cert_db(Ref, File) ->
 %%
 %% Description: Make the session available for reuse.
 %%--------------------------------------------------------------------
--spec register_session(host(), inet:port_number(), #session{}) -> ok.
-register_session(Host, Port, Session) ->
-    cast({register_session, Host, Port, Session}).
+-spec register_session(ssl:host(), inet:port_number(), #session{}, unique | true) -> ok.
+register_session(Host, Port, Session, true) ->
+    call({register_session, Host, Port, Session});
+register_session(Host, Port, Session, unique = Save) ->
+    cast({register_session, Host, Port, Session, Save}).
 
 -spec register_session(inet:port_number(), #session{}) -> ok.
 register_session(Port, Session) ->
@@ -183,7 +187,7 @@ register_session(Port, Session) ->
 %% a the session has been marked "is_resumable = false" for some while
 %% it will be safe to remove the data from the session database.
 %%--------------------------------------------------------------------
--spec invalidate_session(host(), inet:port_number(), #session{}) -> ok.
+-spec invalidate_session(ssl:host(), inet:port_number(), #session{}) -> ok.
 invalidate_session(Host, Port, Session) ->
     load_mitigation(),
     cast({invalidate_session, Host, Port, Session}).
@@ -301,7 +305,10 @@ handle_call({{new_session_id, Port}, _},
 	    _, #state{session_cache_cb = CacheCb,
 		      session_cache_server = Cache} = State) ->
     Id = new_id(Port, ?GEN_UNIQUE_ID_MAX_TRIES, Cache, CacheCb),
-    {reply, Id, State}.
+    {reply, Id, State};
+handle_call({{register_session, Host, Port, Session},_}, _, State0) ->
+    State = client_register_session(Host, Port, Session, State0), 
+    {reply, ok, State}.
 
 %%--------------------------------------------------------------------
 -spec  handle_cast(msg(), #state{}) -> {noreply, #state{}}.
@@ -311,8 +318,12 @@ handle_call({{new_session_id, Port}, _},
 %%
 %% Description: Handling cast messages
 %%--------------------------------------------------------------------
-handle_cast({register_session, Host, Port, Session}, State0) ->
-    State = ssl_client_register_session(Host, Port, Session, State0), 
+handle_cast({register_session, Host, Port, Session, unique}, State0) ->
+    State = client_register_unique_session(Host, Port, Session, State0), 
+    {noreply, State};
+
+handle_cast({register_session, Host, Port, Session, true}, State0) ->
+    State = client_register_session(Host, Port, Session, State0), 
     {noreply, State};
 
 handle_cast({register_session, Port, Session}, State0) ->    
@@ -505,10 +516,10 @@ last_delay_timer({{_,_},_}, TRef, {LastServer, _}) ->
 last_delay_timer({_,_}, TRef, {_, LastClient}) ->
     {TRef, LastClient}.
 
-%% If we can not generate a not allready in use session ID in
+%% If we cannot generate a not allready in use session ID in
 %% ?GEN_UNIQUE_ID_MAX_TRIES we make the new session uncacheable The
 %% value of ?GEN_UNIQUE_ID_MAX_TRIES is stolen from open SSL which
-%% states : "If we can not find a session id in
+%% states : "If we cannot find a session id in
 %% ?GEN_UNIQUE_ID_MAX_TRIES either the RAND code is broken or someone
 %% is trying to open roughly very close to 2^128 (or 2^256) SSL
 %% sessions to our server"
@@ -519,7 +530,7 @@ new_id(Port, Tries, Cache, CacheCb) ->
     case CacheCb:lookup(Cache, {Port, Id}) of
 	undefined ->
 	    Now = erlang:monotonic_time(),
-	    %% New sessions can not be set to resumable
+	    %% New sessions cannot be set to resumable
 	    %% until handshake is compleate and the
 	    %% other session values are set.
 	    CacheCb:update(Cache, {Port, Id}, #session{session_id = Id,
@@ -540,10 +551,10 @@ clean_cert_db(Ref, CertDb, RefDb, FileMapDb, File) ->
 	    ok
     end.
 
-ssl_client_register_session(Host, Port, Session, #state{session_cache_client = Cache,
-							session_cache_cb = CacheCb,
-							session_cache_client_max = Max,
-							session_client_invalidator = Pid0} = State) ->
+client_register_unique_session(Host, Port, Session, #state{session_cache_client = Cache,
+                                                           session_cache_cb = CacheCb,
+                                                           session_cache_client_max = Max,
+                                                           session_client_invalidator = Pid0} = State) ->
     TimeStamp = erlang:monotonic_time(),
     NewSession = Session#session{time_stamp = TimeStamp},
     
@@ -557,6 +568,17 @@ ssl_client_register_session(Host, Port, Session, #state{session_cache_client = C
 	    register_unique_session(Sessions, NewSession, {Host, Port}, State)
     end.
 
+client_register_session(Host, Port, Session, #state{session_cache_client = Cache,
+                                                    session_cache_cb = CacheCb,
+                                                    session_cache_client_max = Max,
+                                                    session_client_invalidator = Pid0} = State) ->
+    TimeStamp = erlang:monotonic_time(),
+    NewSession = Session#session{time_stamp = TimeStamp},
+    Pid = do_register_session({{Host, Port}, 
+                               NewSession#session.session_id}, 
+                              NewSession, Max, Pid0, Cache, CacheCb),
+    State#state{session_client_invalidator = Pid}.
+
 server_register_session(Port, Session, #state{session_cache_server_max = Max,
 					      session_cache_server = Cache,
 					      session_cache_cb = CacheCb,
diff --git a/lib/ssl/src/ssl_pkix_db.erl b/lib/ssl/src/ssl_pkix_db.erl
index f7ddbd060e..dec48fa914 100644
--- a/lib/ssl/src/ssl_pkix_db.erl
+++ b/lib/ssl/src/ssl_pkix_db.erl
@@ -27,6 +27,7 @@
 -include("ssl_internal.hrl").
 -include_lib("public_key/include/public_key.hrl").
 -include_lib("kernel/include/file.hrl").
+-include_lib("kernel/include/logger.hrl").
 
 -export([create/1, create_pem_cache/1, 
 	 add_crls/3, remove_crls/2, remove/1, add_trusted_certs/3, 
@@ -311,7 +312,7 @@ decode_certs(Ref, Cert) ->
 	error:_ ->
 	    Report = io_lib:format("SSL WARNING: Ignoring a CA cert as "
 				   "it could not be correctly decoded.~n", []),
-	    error_logger:info_report(Report),
+	    ?LOG_NOTICE(Report),
 	    undefined
     end.
 
diff --git a/lib/ssl/src/ssl_record.erl b/lib/ssl/src/ssl_record.erl
index b9d1320ef3..9cc131c3cb 100644
--- a/lib/ssl/src/ssl_record.erl
+++ b/lib/ssl/src/ssl_record.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2013-2018. All Rights Reserved.
+%% Copyright Ericsson AB 2013-2019. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -25,6 +25,7 @@
 -module(ssl_record).
 
 -include("ssl_record.hrl").
+-include("ssl_connection.hrl").
 -include("ssl_internal.hrl").
 -include("ssl_cipher.hrl").
 -include("ssl_alert.hrl").
@@ -39,20 +40,23 @@
 	 set_renegotiation_flag/2,
 	 set_client_verify_data/3,
 	 set_server_verify_data/3,
-	 empty_connection_state/2, initial_connection_state/2, record_protocol_role/1]).
+	 empty_connection_state/2, initial_connection_state/2, record_protocol_role/1,
+         step_encryption_state/1]).
 
 %% Compression
 -export([compress/3, uncompress/3, compressions/0]).
 
 %% Payload encryption/decryption
--export([cipher/4, decipher/4, cipher_aead/4, decipher_aead/5, is_correct_mac/2, nonce_seed/3]).
+-export([cipher/4, cipher/5, decipher/4,
+         cipher_aead/4, cipher_aead/5, decipher_aead/5,
+         is_correct_mac/2, nonce_seed/3]).
 
 -export_type([ssl_version/0, ssl_atom_version/0, connection_states/0, connection_state/0]).
 
 -type ssl_version()       :: {integer(), integer()}.
 -type ssl_atom_version() :: tls_record:tls_atom_version().
--type connection_states() :: term(). %% Map
--type connection_state() :: term(). %% Map
+-type connection_states() :: map(). %% Map
+-type connection_state() :: map(). %% Map
 
 %%====================================================================
 %% Connection state handling
@@ -118,6 +122,22 @@ activate_pending_connection_state(#{current_write := Current,
 	   }.
 
 %%--------------------------------------------------------------------
+-spec step_encryption_state(#state{}) -> #state{}.
+%%
+%% Description: Activates the next encyrption state (e.g. handshake
+%% encryption).
+%%--------------------------------------------------------------------
+step_encryption_state(#state{connection_states =
+                                 #{pending_read := PendingRead,
+                                   pending_write := PendingWrite} = ConnStates} = State) ->
+    NewRead = PendingRead#{sequence_number => 0},
+    NewWrite = PendingWrite#{sequence_number => 0},
+    State#state{connection_states =
+                    ConnStates#{current_read => NewRead,
+                                current_write => NewWrite}}.
+
+
+%%--------------------------------------------------------------------
 -spec set_security_params(#security_parameters{}, #security_parameters{},
 			  connection_states()) -> connection_states().
 %%
@@ -278,13 +298,12 @@ compress(?NULL, Data, CS) ->
     {Data, CS}.
 
 %%--------------------------------------------------------------------
--spec compressions() -> [binary()].
+-spec compressions() -> [integer()].
 %%
 %% Description: return a list of compressions supported (currently none)
 %%--------------------------------------------------------------------
 compressions() ->
-    [?byte(?NULL)].
-
+    [?NULL].
 
 %%====================================================================
 %% Payload encryption/decryption
@@ -302,27 +321,49 @@ cipher(Version, Fragment,
 	     #security_parameters{bulk_cipher_algorithm =
 				      BulkCipherAlgo}
 	} = WriteState0, MacHash) ->
-    
+    %%
     {CipherFragment, CipherS1} =
 	ssl_cipher:cipher(BulkCipherAlgo, CipherS0, MacHash, Fragment, Version),
     {CipherFragment,  WriteState0#{cipher_state => CipherS1}}.
+
+%%--------------------------------------------------------------------
+-spec cipher(ssl_version(), iodata(), #cipher_state{}, MacHash::binary(), #security_parameters{}) ->
+		    {CipherFragment::binary(), #cipher_state{}}.
+%%
+%% Description: Payload encryption
+%%--------------------------------------------------------------------
+cipher(Version, Fragment, CipherS0, MacHash,
+       #security_parameters{bulk_cipher_algorithm = BulkCipherAlgo}) ->
+    %%
+    ssl_cipher:cipher(BulkCipherAlgo, CipherS0, MacHash, Fragment, Version).
+
 %%--------------------------------------------------------------------
 -spec cipher_aead(ssl_version(), iodata(), connection_state(), AAD::binary()) ->
  			 {CipherFragment::binary(), connection_state()}.
 
 %% Description: Payload encryption
 %% %%--------------------------------------------------------------------
-cipher_aead(Version, Fragment,
+cipher_aead(_Version, Fragment,
 	    #{cipher_state := CipherS0,
 	      security_parameters :=
 		  #security_parameters{bulk_cipher_algorithm =
 					   BulkCipherAlgo}
 	     } = WriteState0, AAD) ->
     {CipherFragment, CipherS1} =
-	cipher_aead(BulkCipherAlgo, CipherS0, AAD, Fragment, Version),
+	do_cipher_aead(BulkCipherAlgo, Fragment, CipherS0, AAD),
     {CipherFragment,  WriteState0#{cipher_state => CipherS1}}.
 
 %%--------------------------------------------------------------------
+-spec cipher_aead(ssl_version(), iodata(), #cipher_state{}, AAD::binary(), #security_parameters{}) ->
+                         {CipherFragment::binary(), #cipher_state{}}.
+
+%% Description: Payload encryption
+%% %%--------------------------------------------------------------------
+cipher_aead(_Version, Fragment, CipherS, AAD,
+            #security_parameters{bulk_cipher_algorithm = BulkCipherAlgo}) ->
+    do_cipher_aead(BulkCipherAlgo, Fragment, CipherS, AAD).
+
+%%--------------------------------------------------------------------
 -spec decipher(ssl_version(), binary(), connection_state(), boolean()) ->
                       {binary(), binary(), connection_state()} | #alert{}.
 %%
@@ -343,9 +384,8 @@ decipher(Version, CipherFragment,
 	    Alert
     end.
 %%--------------------------------------------------------------------
--spec decipher_aead(ssl_cipher:cipher_enum(),  #cipher_state{}, 
-                    binary(), binary(), ssl_record:ssl_version()) ->
-			   {binary(), #cipher_state{}} | #alert{}.
+-spec decipher_aead(ssl_cipher:cipher_enum(),  #cipher_state{}, binary(), binary(), ssl_record:ssl_version()) ->
+			   binary() | #alert{}.
 %%
 %% Description: Decrypts the data and checks the associated data (AAD) MAC using
 %% cipher described by cipher_enum() and updating the cipher state.
@@ -357,7 +397,7 @@ decipher_aead(Type, #cipher_state{key = Key} = CipherState, AAD0, CipherFragment
         {AAD, CipherText, CipherTag} = aead_ciphertext_split(Type, CipherState, CipherFragment, AAD0),
 	case ssl_cipher:aead_decrypt(Type, Key, Nonce, CipherText, CipherTag, AAD) of
 	    Content when is_binary(Content) ->
-		{Content, CipherState};
+		Content;
 	    _ ->
                 ?ALERT_REC(?FATAL, ?BAD_RECORD_MAC, decryption_failed)
 	end
@@ -399,11 +439,13 @@ random() ->
     Random_28_bytes = ssl_cipher:random_bytes(28),
     <<?UINT32(Secs_since_1970), Random_28_bytes/binary>>.
 
+-compile({inline, [is_correct_mac/2]}).
 is_correct_mac(Mac, Mac) ->
     true;
 is_correct_mac(_M,_H) ->
     false.
 
+-compile({inline, [record_protocol_role/1]}).
 record_protocol_role(client) ->
     ?CLIENT;
 record_protocol_role(server) ->
@@ -427,37 +469,43 @@ initial_security_params(ConnectionEnd) ->
 				     compression_algorithm = ?NULL},
     ssl_cipher:security_parameters(?TLS_NULL_WITH_NULL_NULL, SecParams).
 
-cipher_aead(?CHACHA20_POLY1305 = Type, #cipher_state{key=Key} = CipherState, AAD0, Fragment, _Version) ->
-    AAD = end_additional_data(AAD0, erlang:iolist_size(Fragment)),
+-define(end_additional_data(AAD, Len), << (begin(AAD)end)/binary, ?UINT16(begin(Len)end) >>).
+
+do_cipher_aead(?CHACHA20_POLY1305 = Type, Fragment, #cipher_state{key=Key, tag_len = TagLen} = CipherState, AAD0) ->
+    AAD = ?end_additional_data(AAD0, erlang:iolist_size(Fragment)),
     Nonce = encrypt_nonce(Type, CipherState),
-    {Content, CipherTag} = ssl_cipher:aead_encrypt(Type, Key, Nonce, Fragment, AAD),
+    {Content, CipherTag} = ssl_cipher:aead_encrypt(Type, Key, Nonce, Fragment, AAD, TagLen),
     {<<Content/binary, CipherTag/binary>>, CipherState};
-cipher_aead(Type, #cipher_state{key=Key, nonce = ExplicitNonce} = CipherState, AAD0, Fragment, _Version) ->
-    AAD = end_additional_data(AAD0, erlang:iolist_size(Fragment)),
+do_cipher_aead(Type, Fragment, #cipher_state{key=Key, tag_len = TagLen, nonce = ExplicitNonce} = CipherState, AAD0) ->
+    AAD = ?end_additional_data(AAD0, erlang:iolist_size(Fragment)),
     Nonce = encrypt_nonce(Type, CipherState),
-    {Content, CipherTag} = ssl_cipher:aead_encrypt(Type, Key, Nonce, Fragment, AAD),
+    {Content, CipherTag} = ssl_cipher:aead_encrypt(Type, Key, Nonce, Fragment, AAD, TagLen),
     {<<ExplicitNonce:64/integer, Content/binary, CipherTag/binary>>, CipherState#cipher_state{nonce = ExplicitNonce + 1}}.
 
 encrypt_nonce(?CHACHA20_POLY1305, #cipher_state{nonce = Nonce, iv = IV}) ->
     crypto:exor(<<?UINT32(0), Nonce/binary>>, IV);
-encrypt_nonce(?AES_GCM, #cipher_state{iv = IV, nonce = ExplicitNonce}) ->
+encrypt_nonce(Type, #cipher_state{iv = IV, nonce = ExplicitNonce}) when  Type == ?AES_GCM;
+                                                                         Type == ?AES_CCM;
+                                                                         Type == ?AES_CCM_8 ->
     <<Salt:4/bytes, _/binary>> = IV,
     <<Salt/binary, ExplicitNonce:64/integer>>.
 
 decrypt_nonce(?CHACHA20_POLY1305, #cipher_state{nonce = Nonce, iv = IV}, _) ->
     crypto:exor(<<Nonce:96/unsigned-big-integer>>, IV);
-decrypt_nonce(?AES_GCM, #cipher_state{iv = <<Salt:4/bytes, _/binary>>}, <<ExplicitNonce:8/bytes, _/binary>>) ->   
-     <<Salt/binary, ExplicitNonce/binary>>.
+decrypt_nonce(Type, #cipher_state{iv = <<Salt:4/bytes, _/binary>>}, <<ExplicitNonce:8/bytes, _/binary>>) when 
+      Type == ?AES_GCM; 
+      Type == ?AES_CCM; 
+      Type == ?AES_CCM_8 ->
+    <<Salt/binary, ExplicitNonce/binary>>.
 
+-compile({inline, [aead_ciphertext_split/4]}).
 aead_ciphertext_split(?CHACHA20_POLY1305, #cipher_state{tag_len = Len}, CipherTextFragment, AAD) ->
-    CipherLen = size(CipherTextFragment) - Len,
+    CipherLen = byte_size(CipherTextFragment) - Len,
     <<CipherText:CipherLen/bytes, CipherTag:Len/bytes>> = CipherTextFragment,
-    {end_additional_data(AAD, CipherLen), CipherText, CipherTag};
-aead_ciphertext_split(?AES_GCM,  #cipher_state{tag_len = Len}, CipherTextFragment, AAD) ->
-    CipherLen = size(CipherTextFragment) - (Len + 8), %% 8 is length of explicit Nonce
+    {?end_additional_data(AAD, CipherLen), CipherText, CipherTag};
+aead_ciphertext_split(Type,  #cipher_state{tag_len = Len}, CipherTextFragment, AAD) when Type == ?AES_GCM;
+                                                                                         Type == ?AES_CCM;
+                                                                                         Type == ?AES_CCM_8 ->
+    CipherLen = byte_size(CipherTextFragment) - (Len + 8), %% 8 is length of explicit Nonce
     << _:8/bytes, CipherText:CipherLen/bytes, CipherTag:Len/bytes>> = CipherTextFragment,
-    {end_additional_data(AAD, CipherLen), CipherText, CipherTag}.
-
-end_additional_data(AAD, Len) ->
-    <<AAD/binary, ?UINT16(Len)>>.
-        
+    {?end_additional_data(AAD, CipherLen), CipherText, CipherTag}.
diff --git a/lib/ssl/src/ssl_record.hrl b/lib/ssl/src/ssl_record.hrl
index ed007f58d7..6d4d47cedb 100644
--- a/lib/ssl/src/ssl_record.hrl
+++ b/lib/ssl/src/ssl_record.hrl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2007-2016. All Rights Reserved.
+%% Copyright Ericsson AB 2007-2019. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -74,7 +74,7 @@
 -define(INITIAL_BYTES, 5).
 
 -define(MAX_SEQENCE_NUMBER, 18446744073709551615). %% (1 bsl 64) - 1 = 18446744073709551615
-%% Sequence numbers can not wrap so when max is about to be reached we should renegotiate.
+%% Sequence numbers cannot wrap so when max is about to be reached we should renegotiate.
 %% We will renegotiate a little before so that there will be sequence numbers left
 %% for the rehandshake and a little data. Currently we decided to renegotiate a little more
 %% often as we can have a cheaper test to check if it is time to renegotiate. It will still
@@ -96,6 +96,11 @@
 -define(AES_CBC, 7).
 -define(AES_GCM, 8).
 -define(CHACHA20_POLY1305, 9).
+%% Following two are not defined in any RFC but we want to have the
+%% same type of handling internaly, all of these "bulk_cipher_algorithm"
+%% enums are only used internaly anyway.
+-define(AES_CCM, 10). 
+-define(AES_CCM_8, 11). 
 
 %% CipherType
 -define(STREAM, 0).
@@ -140,6 +145,9 @@
 -define(ALERT, 21).
 -define(HANDSHAKE, 22).
 -define(APPLICATION_DATA, 23).
+-define(HEARTBEAT, 24).
+-define(KNOWN_RECORD_TYPE(Type),
+        (is_integer(Type) andalso (20 =< (Type)) andalso ((Type) =< 23))).
 -define(MAX_PLAIN_TEXT_LENGTH, 16384).
 -define(MAX_COMPRESSED_LENGTH, (?MAX_PLAIN_TEXT_LENGTH+1024)).
 -define(MAX_CIPHER_TEXT_LENGTH, (?MAX_PLAIN_TEXT_LENGTH+2048)).
diff --git a/lib/ssl/src/ssl_session.erl b/lib/ssl/src/ssl_session.erl
index c9607489e9..44305c65fe 100644
--- a/lib/ssl/src/ssl_session.erl
+++ b/lib/ssl/src/ssl_session.erl
@@ -27,6 +27,7 @@
 
 -include("ssl_handshake.hrl").
 -include("ssl_internal.hrl").
+-include("ssl_api.hrl").
 
 %% Internal application API
 -export([is_new/2, client_id/4, server_id/6, valid_session/2]).
@@ -34,7 +35,7 @@
 -type seconds()   :: integer(). 
 
 %%--------------------------------------------------------------------
--spec is_new(session_id(), session_id()) -> boolean().
+-spec is_new(ssl:session_id(), ssl:session_id()) -> boolean().
 %%
 %% Description: Checks if the session id decided by the server is a
 %%              new or resumed sesion id.
@@ -47,12 +48,19 @@ is_new(_ClientSuggestion, _ServerDecision) ->
     true.
 
 %%--------------------------------------------------------------------
--spec client_id({host(), inet:port_number(), #ssl_options{}}, db_handle(), atom(),
+-spec client_id({ssl:host(), inet:port_number(), #ssl_options{}}, db_handle(), atom(),
 	 undefined | binary()) -> binary().
 %%
 %% Description: Should be called by the client side to get an id
 %%              for the client hello message.
 %%--------------------------------------------------------------------
+client_id({Host, Port, #ssl_options{reuse_session = SessionId}}, Cache, CacheCb, _) when is_binary(SessionId)->
+    case CacheCb:lookup(Cache, {{Host, Port}, SessionId}) of
+        undefined ->
+	    <<>>;
+	#session{} ->
+	    SessionId
+    end;
 client_id(ClientInfo, Cache, CacheCb, OwnCert) ->
     case select_session(ClientInfo, Cache, CacheCb, OwnCert) of
 	no_session ->
@@ -91,7 +99,8 @@ server_id(Port, SuggestedId, Options, Cert, Cache, CacheCb) ->
 %%--------------------------------------------------------------------
 %%% Internal functions
 %%--------------------------------------------------------------------
-select_session({_, _, #ssl_options{reuse_sessions=false}}, _Cache, _CacheCb, _OwnCert) ->
+select_session({_, _, #ssl_options{reuse_sessions = Reuse}}, _Cache, _CacheCb, _OwnCert) when Reuse =/= true ->
+    %% If reuse_sessions == true | save a new session should be created
     no_session;
 select_session({HostIP, Port, SslOpts}, Cache, CacheCb, OwnCert) ->
     Sessions = CacheCb:select_session(Cache, {HostIP, Port}),
@@ -132,7 +141,7 @@ is_resumable(SuggestedSessionId, Port, #ssl_options{reuse_session = ReuseFun} =
 		false -> {false, undefined}
 	    end;
 	undefined ->
-	    {false, undefined}
+ 	    {false, undefined}
     end.
 
 resumable(new) ->
diff --git a/lib/ssl/src/ssl_session_cache_api.erl b/lib/ssl/src/ssl_session_cache_api.erl
index b68c75a09b..5f96f905b1 100644
--- a/lib/ssl/src/ssl_session_cache_api.erl
+++ b/lib/ssl/src/ssl_session_cache_api.erl
@@ -23,14 +23,20 @@
 -module(ssl_session_cache_api).
 -include("ssl_handshake.hrl").
 -include("ssl_internal.hrl").
+-include("ssl_api.hrl").
 
--type key() :: {{host(), inet:port_number()}, session_id()} |  {inet:port_number(), session_id()}.
+-export_type([session_cache_key/0, session/0, partial_key/0, session_cache_ref/0]).
 
--callback init(list()) -> db_handle().
--callback terminate(db_handle()) -> any().
--callback lookup(db_handle(), key()) -> #session{} | undefined.
--callback update(db_handle(), key(), #session{}) -> any().
--callback delete(db_handle(), key()) -> any().
--callback foldl(fun(), term(), db_handle()) -> term().
--callback select_session(db_handle(), {host(), inet:port_number()} | inet:port_number()) -> [#session{}].
--callback size(db_handle()) -> integer().
+-type session_cache_ref() :: any().
+-type session_cache_key() :: {partial_key(), ssl:session_id()}.
+-opaque session()         :: #session{}.
+-opaque partial_key()     :: {ssl:host(), inet:port_number()} | inet:port_number().
+
+-callback init(list()) -> session_cache_ref().
+-callback terminate(session_cache_ref()) -> any().
+-callback lookup(session_cache_ref(), session_cache_key()) -> #session{} | undefined.
+-callback update(session_cache_ref(), session_cache_key(), #session{}) -> any().
+-callback delete(session_cache_ref(), session_cache_key()) -> any().
+-callback foldl(fun(), term(), session_cache_ref()) -> term().
+-callback select_session(session_cache_ref(), {ssl:host(), inet:port_number()} | inet:port_number()) -> [#session{}].
+-callback size(session_cache_ref()) -> integer().
diff --git a/lib/ssl/src/tls_connection.erl b/lib/ssl/src/tls_connection.erl
index 0f986b5e21..a05858221a 100644
--- a/lib/ssl/src/tls_connection.erl
+++ b/lib/ssl/src/tls_connection.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2007-2018. All Rights Reserved.
+%% Copyright Ericsson AB 2007-2019. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -17,7 +17,6 @@
 %%
 %% %CopyrightEnd%
 %%
-
 %%
 %%----------------------------------------------------------------------
 %% Purpose: Handles an ssl connection, e.i. both the setup
@@ -38,7 +37,8 @@
 -include("ssl_api.hrl").
 -include("ssl_internal.hrl").
 -include("ssl_srp.hrl").
--include_lib("public_key/include/public_key.hrl"). 
+-include_lib("public_key/include/public_key.hrl").
+-include_lib("kernel/include/logger.hrl").
 
 %% Internal application API
 
@@ -47,10 +47,11 @@
 
 %% State transition handling	 
 -export([next_event/3, next_event/4, 
-         handle_common_event/4]).
+         handle_protocol_record/3]).
 
 %% Handshake handling
--export([renegotiation/2, renegotiate/2, send_handshake/2, 
+-export([renegotiation/2, renegotiate/2, send_handshake/2,
+         send_handshake_flight/1,
 	 queue_handshake/2, queue_change_cipher/2,
 	 reinit/1, reinit_handshake_data/1, select_sni_extension/1, 
          empty_connection_state/2]).
@@ -58,19 +59,35 @@
 %% Alert and close handling
 -export([send_alert/2, send_alert_in_connection/2,
          send_sync_alert/2,
-         encode_alert/3, close/5, protocol_name/0]).
+         close/5, protocol_name/0]).
 
 %% Data handling
--export([encode_data/3, next_record/1,
-         send/3, socket/5, setopts/3, getopts/3]).
+-export([next_record/1, socket/4, setopts/3, getopts/3]).
 
 %% gen_statem state functions
 -export([init/3, error/3, downgrade/3, %% Initiation and take down states
 	 hello/3, user_hello/3, certify/3, cipher/3, abbreviated/3, %% Handshake states 
 	 connection/3]).
+%% TLS 1.3 state functions (server)
+-export([start/3,         %% common state with client
+         negotiated/3,
+         recvd_ch/3,
+         wait_cert/3,     %% common state with client
+         wait_cv/3,       %% common state with client
+         wait_eoed/3,
+         wait_finished/3, %% common state with client
+         wait_flight2/3,
+         connected/3      %% common state with client
+        ]).
+%% TLS 1.3 state functions (client)
+-export([wait_cert_cr/3,
+         wait_ee/3,
+         wait_sh/3
+        ]).
 %% gen_statem callbacks
 -export([callback_mode/0, terminate/3, code_change/4, format_status/2]).
  
+-export([encode_handshake/4]).
 
 -define(DIST_CNTRL_SPAWN_OPTS, [{priority, max}]).
 
@@ -81,7 +98,7 @@
 %% Setup
 %%====================================================================
 start_fsm(Role, Host, Port, Socket, {#ssl_options{erl_dist = false},_, Tracker} = Opts,
-	  User, {CbModule, _,_, _} = CbInfo, 
+	  User, {CbModule, _,_, _, _} = CbInfo, 
 	  Timeout) -> 
     try 
         {ok, Sender} = tls_sender:start(),
@@ -95,7 +112,7 @@ start_fsm(Role, Host, Port, Socket, {#ssl_options{erl_dist = false},_, Tracker}
     end;
 
 start_fsm(Role, Host, Port, Socket, {#ssl_options{erl_dist = true},_, Tracker} = Opts,
-	  User, {CbModule, _,_, _} = CbInfo, 
+	  User, {CbModule, _,_, _, _} = CbInfo, 
 	  Timeout) -> 
     try 
         {ok, Sender} = tls_sender:start([{spawn_opt, ?DIST_CNTRL_SPAWN_OPTS}]),
@@ -109,7 +126,7 @@ start_fsm(Role, Host, Port, Socket, {#ssl_options{erl_dist = true},_, Tracker} =
     end.
 
 %%--------------------------------------------------------------------
--spec start_link(atom(), pid(), host(), inet:port_number(), port(), list(), pid(), tuple()) ->
+-spec start_link(atom(), pid(), ssl:host(), inet:port_number(), port(), list(), pid(), tuple()) ->
     {ok, pid()} | ignore |  {error, reason()}.
 %%
 %% Description: Creates a gen_statem process which calls Module:init/1 to
@@ -144,28 +161,23 @@ pids(#state{protocol_specific = #{sender := Sender}}) ->
 %%====================================================================
 %% State transition handling
 %%====================================================================
-next_record(#state{unprocessed_handshake_events = N} = State) when N > 0 ->
-    {no_record, State#state{unprocessed_handshake_events = N-1}};
-					 
+next_record(#state{handshake_env = 
+                       #handshake_env{unprocessed_handshake_events = N} = HsEnv} 
+            = State) when N > 0 ->
+    {no_record, State#state{handshake_env = 
+                                HsEnv#handshake_env{unprocessed_handshake_events = N-1}}};
 next_record(#state{protocol_buffers =
-		       #protocol_buffers{tls_packets = [], tls_cipher_texts = [CT | Rest]}
-		   = Buffers,
-		   connection_states = ConnStates0,
-		   ssl_options = #ssl_options{padding_check = Check}} = State) ->
-    case tls_record:decode_cipher_text(CT, ConnStates0, Check) of
-	{Plain, ConnStates} ->		      
-	    {Plain, State#state{protocol_buffers =
-				    Buffers#protocol_buffers{tls_cipher_texts = Rest},
-				connection_states = ConnStates}};
-	#alert{} = Alert ->
-	    {Alert, State}
-    end;
-next_record(#state{protocol_buffers = #protocol_buffers{tls_packets = [], tls_cipher_texts = []},
+                       #protocol_buffers{tls_cipher_texts = [_|_] = CipherTexts},
+                   connection_states = ConnectionStates,
+                   ssl_options = #ssl_options{padding_check = Check}} = State) ->
+    next_record(State, CipherTexts, ConnectionStates, Check);
+next_record(#state{protocol_buffers = #protocol_buffers{tls_cipher_texts = []},
                    protocol_specific = #{active_n_toggle := true, active_n := N} = ProtocolSpec,
- 		   socket = Socket,
-                   close_tag = CloseTag,
-		   transport_cb = Transport} = State) ->
-     case tls_socket:setopts(Transport, Socket, [{active, N}]) of
+                   static_env = #static_env{socket = Socket,
+                                            close_tag = CloseTag,
+                                            transport_cb = Transport}  
+                  } = State) ->
+    case tls_socket:setopts(Transport, Socket, [{active, N}]) of
  	ok ->
              {no_record, State#state{protocol_specific = ProtocolSpec#{active_n_toggle => false}}}; 
  	_ ->
@@ -175,16 +187,56 @@ next_record(#state{protocol_buffers = #protocol_buffers{tls_packets = [], tls_ci
 next_record(State) ->
     {no_record, State}.
 
+%% Decipher next record and concatenate consecutive ?APPLICATION_DATA records into one
+%%
+next_record(State, CipherTexts, ConnectionStates, Check) ->
+    next_record(State, CipherTexts, ConnectionStates, Check, []).
+%%
+next_record(#state{connection_env = #connection_env{negotiated_version = Version}} = State,
+            [CT|CipherTexts], ConnectionStates0, Check, Acc) ->
+    case tls_record:decode_cipher_text(Version, CT, ConnectionStates0, Check) of
+        {#ssl_tls{type = ?APPLICATION_DATA, fragment = Fragment}, ConnectionStates} ->
+            case CipherTexts of
+                [] ->
+                    %% End of cipher texts - build and deliver an ?APPLICATION_DATA record
+                    %% from the accumulated fragments
+                    next_record_done(State, [], ConnectionStates,
+                                     #ssl_tls{type = ?APPLICATION_DATA,
+                                              fragment = iolist_to_binary(lists:reverse(Acc, [Fragment]))});
+                [_|_] ->
+                    next_record(State, CipherTexts, ConnectionStates, Check, [Fragment|Acc])
+            end;
+        {Record, ConnectionStates} when Acc =:= [] ->
+            %% Singelton non-?APPLICATION_DATA record - deliver
+            next_record_done(State, CipherTexts, ConnectionStates, Record);
+        {_Record, _ConnectionStates_to_forget} ->
+            %% Not ?APPLICATION_DATA but we have accumulated fragments
+            %% -> build an ?APPLICATION_DATA record with concatenated fragments
+            %%    and forget about decrypting this record - we'll decrypt it again next time
+            next_record_done(State, [CT|CipherTexts], ConnectionStates0,
+                             #ssl_tls{type = ?APPLICATION_DATA, fragment = iolist_to_binary(lists:reverse(Acc))});
+        #alert{} = Alert ->
+            Alert
+    end.
+
+next_record_done(#state{protocol_buffers = Buffers} = State, CipherTexts, ConnectionStates, Record) ->
+    {Record,
+     State#state{protocol_buffers = Buffers#protocol_buffers{tls_cipher_texts = CipherTexts},
+                 connection_states = ConnectionStates}}.
+
+
 next_event(StateName, Record, State) ->
     next_event(StateName, Record, State, []).
+%%
 next_event(StateName, no_record, State0, Actions) ->
     case next_record(State0) of
  	{no_record, State} ->
             {next_state, StateName, State, Actions};
  	{#ssl_tls{} = Record, State} ->
  	    {next_state, StateName, State, [{next_event, internal, {protocol_record, Record}} | Actions]};
- 	{#alert{} = Alert, State} ->
- 	    {next_state, StateName, State, [{next_event, internal, Alert} | Actions]}
+	#alert{} = Alert ->
+            Version = State0#state.connection_env#connection_env.negotiated_version,
+            ssl_connection:handle_own_alert(Alert, Version, StateName, State0)
     end;
 next_event(StateName, Record, State, Actions) ->
     case Record of
@@ -193,20 +245,49 @@ next_event(StateName, Record, State, Actions) ->
 	#ssl_tls{} = Record ->
 	    {next_state, StateName, State, [{next_event, internal, {protocol_record, Record}} | Actions]};
 	#alert{} = Alert ->
-	    {next_state, StateName, State, [{next_event, internal, Alert} | Actions]}
+            Version = State#state.connection_env#connection_env.negotiated_version,
+            ssl_connection:handle_own_alert(Alert, Version, StateName, State)
     end.
 
-handle_common_event(internal, #alert{} = Alert, StateName, 
-		    #state{negotiated_version = Version} = State) ->
-    ssl_connection:handle_own_alert(Alert, Version, StateName, State);
+
+%%% TLS record protocol level application data messages 
+handle_protocol_record(#ssl_tls{type = ?APPLICATION_DATA, fragment = Data}, StateName, 
+                       #state{start_or_recv_from = From,
+                              socket_options = #socket_options{active = false}} = State0) when From =/= undefined ->
+    case ssl_connection:read_application_data(Data, State0) of
+       {stop, _, _} = Stop->
+            Stop;
+       {Record, #state{start_or_recv_from = Caller} = State1} ->
+            TimerAction = case Caller of
+                              undefined -> %% Passive recv complete cancel timer
+                                  [{{timeout, recv}, infinity, timeout}];
+                              _ ->
+                                  []
+                          end,
+            {next_state, StateName, State, Actions} = next_event(StateName, Record, State1, TimerAction), 
+            ssl_connection:hibernate_after(StateName, State, Actions)
+    end;
+handle_protocol_record(#ssl_tls{type = ?APPLICATION_DATA, fragment = Data}, StateName, State0) ->
+    case ssl_connection:read_application_data(Data, State0) of
+	{stop, _, _} = Stop->
+            Stop;
+	{Record, State1} ->
+            case next_event(StateName, Record, State1) of
+                {next_state, StateName, State, Actions} ->
+                    ssl_connection:hibernate_after(StateName, State, Actions);
+                {stop, _, _} = Stop ->
+                    Stop
+            end
+    end;
 %%% TLS record protocol level handshake messages 
-handle_common_event(internal,  #ssl_tls{type = ?HANDSHAKE, fragment = Data}, 
+handle_protocol_record(#ssl_tls{type = ?HANDSHAKE, fragment = Data}, 
 		    StateName, #state{protocol_buffers =
 					  #protocol_buffers{tls_handshake_buffer = Buf0} = Buffers,
-				      negotiated_version = Version,
+                                      connection_env = #connection_env{negotiated_version = Version},
 				      ssl_options = Options} = State0) ->
     try
-	{Packets, Buf} = tls_handshake:get_tls_handshake(Version,Data,Buf0, Options),
+	EffectiveVersion = effective_version(Version, Options),
+	{Packets, Buf} = tls_handshake:get_tls_handshake(EffectiveVersion,Data,Buf0, Options),
 	State =
 	    State0#state{protocol_buffers =
 			     Buffers#protocol_buffers{tls_handshake_buffer = Buf}},
@@ -220,30 +301,29 @@ handle_common_event(internal,  #ssl_tls{type = ?HANDSHAKE, fragment = Data},
                     connection ->
                         ssl_connection:hibernate_after(StateName, State, Events);
                     _ ->
+                        HsEnv = State#state.handshake_env,
                         {next_state, StateName, 
-                         State#state{unprocessed_handshake_events = unprocessed_events(Events)}, Events}
+                         State#state{protocol_buffers = Buffers,
+                                     handshake_env = 
+                                         HsEnv#handshake_env{unprocessed_handshake_events 
+                                                             = unprocessed_events(Events)}}, Events}
                 end
         end
     catch throw:#alert{} = Alert ->
             ssl_connection:handle_own_alert(Alert, Version, StateName, State0)
     end;
-%%% TLS record protocol level application data messages 
-handle_common_event(internal, #ssl_tls{type = ?APPLICATION_DATA, fragment = Data}, StateName, State) ->
-    {next_state, StateName, State, [{next_event, internal, {application_data, Data}}]};
 %%% TLS record protocol level change cipher messages
-handle_common_event(internal, #ssl_tls{type = ?CHANGE_CIPHER_SPEC, fragment = Data}, StateName, State) ->
+handle_protocol_record(#ssl_tls{type = ?CHANGE_CIPHER_SPEC, fragment = Data}, StateName, State) ->
     {next_state, StateName, State, [{next_event, internal, #change_cipher_spec{type = Data}}]};
 %%% TLS record protocol level Alert messages
-handle_common_event(internal, #ssl_tls{type = ?ALERT, fragment = EncAlerts}, StateName,
-		    #state{negotiated_version = Version} = State) ->
+handle_protocol_record(#ssl_tls{type = ?ALERT, fragment = EncAlerts}, StateName,
+                       #state{connection_env = #connection_env{negotiated_version = Version}} = State) ->
     try decode_alerts(EncAlerts) of	
 	Alerts = [_|_] ->
 	    handle_alerts(Alerts,  {next_state, StateName, State});
 	[] ->
 	    ssl_connection:handle_own_alert(?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, empty_alert), 
-					    Version, StateName, State);
-	#alert{} = Alert ->
-	    ssl_connection:handle_own_alert(Alert, Version, StateName, State)
+					    Version, StateName, State)
     catch
 	_:_ ->
 	    ssl_connection:handle_own_alert(?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, alert_decode_error),
@@ -251,81 +331,91 @@ handle_common_event(internal, #ssl_tls{type = ?ALERT, fragment = EncAlerts}, Sta
 
     end;
 %% Ignore unknown TLS record level protocol messages
-handle_common_event(internal, #ssl_tls{type = _Unknown}, StateName, State) ->
-    {next_state, StateName, State}.
+handle_protocol_record(#ssl_tls{type = _Unknown}, StateName, State) ->
+    {next_state, StateName, State, []}.
 %%====================================================================
 %% Handshake handling
 %%====================================================================
 renegotiation(Pid, WriteState) ->
     gen_statem:call(Pid, {user_renegotiate, WriteState}).
 
-renegotiate(#state{role = client} = State, Actions) ->
+renegotiate(#state{static_env = #static_env{role = client},
+                   handshake_env = HsEnv} = State, Actions) ->
     %% Handle same way as if server requested
     %% the renegotiation
     Hs0 = ssl_handshake:init_handshake_history(),
-    {next_state, connection, State#state{tls_handshake_history = Hs0}, 
+    {next_state, connection, State#state{handshake_env = HsEnv#handshake_env{tls_handshake_history = Hs0}}, 
      [{next_event, internal, #hello_request{}} | Actions]};
-renegotiate(#state{role = server,
-		   socket = Socket,
-		   transport_cb = Transport,
-		   negotiated_version = Version,
+renegotiate(#state{static_env = #static_env{role = server,
+                                            socket = Socket,
+                                            transport_cb = Transport},
+                   handshake_env = HsEnv,
+                   connection_env = #connection_env{negotiated_version = Version},
 		   connection_states = ConnectionStates0} = State0, Actions) ->
     HelloRequest = ssl_handshake:hello_request(),
     Frag = tls_handshake:encode_handshake(HelloRequest, Version),
     Hs0 = ssl_handshake:init_handshake_history(),
     {BinMsg, ConnectionStates} = 
 	tls_record:encode_handshake(Frag, Version, ConnectionStates0),
-    send(Transport, Socket, BinMsg),
+    tls_socket:send(Transport, Socket, BinMsg),
     State = State0#state{connection_states = 
 			     ConnectionStates,
-			 tls_handshake_history = Hs0},
+			 handshake_env = HsEnv#handshake_env{tls_handshake_history = Hs0}},
     next_event(hello, no_record, State, Actions).
 	     
 send_handshake(Handshake, State) ->
     send_handshake_flight(queue_handshake(Handshake, State)).
 
-queue_handshake(Handshake, #state{negotiated_version = Version,
-				  tls_handshake_history = Hist0,
-				  flight_buffer = Flight0,
+
+queue_handshake(Handshake, #state{handshake_env = #handshake_env{tls_handshake_history = Hist0} = HsEnv,
+				  connection_env = #connection_env{negotiated_version = Version},
+                                  flight_buffer = Flight0,
+                                  ssl_options = SslOpts,
 				  connection_states = ConnectionStates0} = State0) ->
     {BinHandshake, ConnectionStates, Hist} =
 	encode_handshake(Handshake, Version, ConnectionStates0, Hist0),
+    ssl_logger:debug(SslOpts#ssl_options.log_level, outbound, 'handshake', Handshake),
+    ssl_logger:debug(SslOpts#ssl_options.log_level, outbound, 'record', BinHandshake),
+
     State0#state{connection_states = ConnectionStates,
-		 tls_handshake_history = Hist,
+                 handshake_env = HsEnv#handshake_env{tls_handshake_history = Hist},
 		 flight_buffer = Flight0 ++ [BinHandshake]}.
 
-send_handshake_flight(#state{socket = Socket,
-			     transport_cb = Transport,
+send_handshake_flight(#state{static_env = #static_env{socket = Socket,
+                                                      transport_cb = Transport},
 			     flight_buffer = Flight} = State0) ->
-    send(Transport, Socket, Flight),
+    tls_socket:send(Transport, Socket, Flight),
     {State0#state{flight_buffer = []}, []}.
 
-queue_change_cipher(Msg, #state{negotiated_version = Version,
-				  flight_buffer = Flight0,
-				  connection_states = ConnectionStates0} = State0) ->
+
+queue_change_cipher(Msg, #state{connection_env = #connection_env{negotiated_version = Version},
+                                flight_buffer = Flight0,
+                                ssl_options = SslOpts,
+                                connection_states = ConnectionStates0} = State0) ->
     {BinChangeCipher, ConnectionStates} =
 	encode_change_cipher(Msg, Version, ConnectionStates0),
+    ssl_logger:debug(SslOpts#ssl_options.log_level, outbound, 'record', BinChangeCipher),
     State0#state{connection_states = ConnectionStates,
 		 flight_buffer = Flight0 ++ [BinChangeCipher]}.
 
 reinit(#state{protocol_specific = #{sender := Sender},
-              negotiated_version = Version,
+              connection_env = #connection_env{negotiated_version = Version},
               connection_states = #{current_write := Write}} = State) -> 
     tls_sender:update_connection_state(Sender, Write, Version),
     reinit_handshake_data(State).
 
-reinit_handshake_data(State) ->
+reinit_handshake_data(#state{handshake_env = HsEnv} =State) ->
     %% premaster_secret, public_key_info and tls_handshake_info 
     %% are only needed during the handshake phase. 
     %% To reduce memory foot print of a connection reinitialize them.
      State#state{
-       premaster_secret = undefined,
-       public_key_info = undefined,
-       tls_handshake_history = ssl_handshake:init_handshake_history()
+       handshake_env = HsEnv#handshake_env{tls_handshake_history = ssl_handshake:init_handshake_history(),
+                                           public_key_info = undefined,
+                                           premaster_secret = undefined}
      }.
 
-select_sni_extension(#client_hello{extensions = HelloExtensions}) ->
-    HelloExtensions#hello_extensions.sni;
+select_sni_extension(#client_hello{extensions = #{sni := SNI}}) ->
+    SNI;
 select_sni_extension(_) ->
     undefined.
 
@@ -335,6 +425,7 @@ empty_connection_state(ConnectionEnd, BeastMitigation) ->
 %%====================================================================
 %% Alert and close handling
 %%====================================================================	     
+
 %%--------------------------------------------------------------------
 -spec encode_alert(#alert{}, ssl_record:ssl_version(), ssl_record:connection_states()) -> 
 		    {iolist(), ssl_record:connection_states()}.
@@ -344,13 +435,15 @@ empty_connection_state(ConnectionEnd, BeastMitigation) ->
 encode_alert(#alert{} = Alert, Version, ConnectionStates) ->
     tls_record:encode_alert_record(Alert, Version, ConnectionStates).
 
-send_alert(Alert, #state{negotiated_version = Version,
-                         socket = Socket,
-                         transport_cb = Transport,
+send_alert(Alert, #state{static_env = #static_env{socket = Socket,
+                                                  transport_cb = Transport},
+                         connection_env = #connection_env{negotiated_version = Version},
+                         ssl_options = SslOpts,
                          connection_states = ConnectionStates0} = StateData0) ->
     {BinMsg, ConnectionStates} =
         encode_alert(Alert, Version, ConnectionStates0),
-    send(Transport, Socket, BinMsg),
+    tls_socket:send(Transport, Socket, BinMsg),
+    ssl_logger:debug(SslOpts#ssl_options.log_level, outbound, 'record', BinMsg),
     StateData0#state{connection_states = ConnectionStates}.
 
 %% If an ALERT sent in the connection state, should cause the TLS
@@ -404,14 +497,9 @@ protocol_name() ->
 %%====================================================================
 %% Data handling
 %%====================================================================	     
-encode_data(Data, Version, ConnectionStates0)->
-    tls_record:encode_data(Data, Version, ConnectionStates0).
 
-send(Transport, Socket, Data) ->
-   tls_socket:send(Transport, Socket, Data).
-
-socket(Pids,  Transport, Socket, Connection, Tracker) ->
-    tls_socket:socket(Pids, Transport, Socket, Connection, Tracker).
+socket(Pids,  Transport, Socket, Tracker) ->
+    tls_socket:socket(Pids, Transport, Socket, ?MODULE, Tracker).
 
 setopts(Transport, Socket, Other) ->
     tls_socket:setopts(Transport, Socket, Other).
@@ -429,33 +517,40 @@ getopts(Transport, Socket, Tag) ->
 %%--------------------------------------------------------------------
 
 init({call, From}, {start, Timeout}, 
-     #state{host = Host, port = Port, role = client,
+     #state{static_env = #static_env{role = client,
+                                     host = Host,
+                                     port = Port,
+                                     transport_cb = Transport,
+                                     socket = Socket,
+                                     session_cache = Cache,
+                                     session_cache_cb = CacheCb},
+            handshake_env = #handshake_env{renegotiation = {Renegotiation, _}} = HsEnv,
+            connection_env = CEnv,
 	    ssl_options = SslOpts,
 	    session = #session{own_certificate = Cert} = Session0,
-	    transport_cb = Transport, socket = Socket,
-	    connection_states = ConnectionStates0,
-	    renegotiation = {Renegotiation, _},
-	    session_cache = Cache,
-	    session_cache_cb = CacheCb
+	    connection_states = ConnectionStates0
 	   } = State0) ->
-    Timer = ssl_connection:start_or_recv_cancel_timer(Timeout, From),
+    KeyShare = maybe_generate_client_shares(SslOpts),
     Hello = tls_handshake:client_hello(Host, Port, ConnectionStates0, SslOpts,
-				       Cache, CacheCb, Renegotiation, Cert),
-    
-    Version = Hello#client_hello.client_version,
-    HelloVersion = tls_record:hello_version(Version, SslOpts#ssl_options.versions),
+				       Cache, CacheCb, Renegotiation, Cert, KeyShare),
+
+    HelloVersion = tls_record:hello_version(SslOpts#ssl_options.versions),
     Handshake0 = ssl_handshake:init_handshake_history(),
     {BinMsg, ConnectionStates, Handshake} =
         encode_handshake(Hello,  HelloVersion, ConnectionStates0, Handshake0),
-    send(Transport, Socket, BinMsg),
+    tls_socket:send(Transport, Socket, BinMsg),
+    ssl_logger:debug(SslOpts#ssl_options.log_level, outbound, 'handshake', Hello),
+    ssl_logger:debug(SslOpts#ssl_options.log_level, outbound, 'record', BinMsg),
+
     State = State0#state{connection_states = ConnectionStates,
-                         negotiated_version = Version, %% Requested version
+                         connection_env = CEnv#connection_env{negotiated_version = HelloVersion}, %% Requested version
                          session =
                              Session0#session{session_id = Hello#client_hello.session_id},
-                         tls_handshake_history = Handshake,
+                         handshake_env = HsEnv#handshake_env{tls_handshake_history = Handshake},
                          start_or_recv_from = From,
-			  timer = Timer},
-    next_event(hello, no_record, State);
+                         key_share = KeyShare},
+    next_event(hello, no_record, State, [{{timeout, handshake}, Timeout, close}]);
+
 init(Type, Event, State) ->
     gen_handshake(?FUNCTION_NAME, Type, Event, State).
  
@@ -466,8 +561,9 @@ init(Type, Event, State) ->
 %%--------------------------------------------------------------------
 error({call, From}, {start, _Timeout}, 
       #state{protocol_specific = #{error := Error}} = State) ->
-    ssl_connection:stop_and_reply(
-      normal, {reply, From, {error, Error}}, State);
+    {stop_and_reply, {shutdown, normal}, 
+     [{reply, From, {error, Error}}], State};
+
 error({call, _} = Call, Msg, State) ->
     gen_handshake(?FUNCTION_NAME, Call, Msg, State);
 error(_, _, _) ->
@@ -481,55 +577,76 @@ error(_, _, _) ->
 %%--------------------------------------------------------------------
 hello(internal, #client_hello{extensions = Extensions} = Hello, 
       #state{ssl_options = #ssl_options{handshake = hello},
+             handshake_env = HsEnv,
              start_or_recv_from = From} = State) ->
     {next_state, user_hello, State#state{start_or_recv_from = undefined,
-                                              hello = Hello},
-     [{reply, From, {ok, ssl_connection:map_extensions(Extensions)}}]};
+                                         handshake_env = HsEnv#handshake_env{hello = Hello}},
+     [{reply, From, {ok, Extensions}}]};
 hello(internal, #server_hello{extensions = Extensions} = Hello, 
       #state{ssl_options = #ssl_options{handshake = hello},
+             handshake_env = HsEnv,
              start_or_recv_from = From} = State) ->
     {next_state, user_hello, State#state{start_or_recv_from = undefined,
-                                         hello = Hello},
-     [{reply, From, {ok, ssl_connection:map_extensions(Extensions)}}]};     
+                                         handshake_env = HsEnv#handshake_env{hello = Hello}},
+     [{reply, From, {ok, Extensions}}]};     
+
 hello(internal, #client_hello{client_version = ClientVersion} = Hello,
       #state{connection_states = ConnectionStates0,
-	     port = Port, session = #session{own_certificate = Cert} = Session0,
-	     renegotiation = {Renegotiation, _},
-	     session_cache = Cache,
-	     session_cache_cb = CacheCb,
-	     negotiated_protocol = CurrentProtocol,
-	     key_algorithm = KeyExAlg,
+             static_env = #static_env{
+                             port = Port,
+                             session_cache = Cache,
+                             session_cache_cb = CacheCb},
+             handshake_env = #handshake_env{kex_algorithm = KeyExAlg,
+                                            renegotiation = {Renegotiation, _},
+                                            negotiated_protocol = CurrentProtocol} = HsEnv,
+             connection_env = CEnv,
+             session = #session{own_certificate = Cert} = Session0,
 	     ssl_options = SslOpts} = State) ->
-    case tls_handshake:hello(Hello, SslOpts, {Port, Session0, Cache, CacheCb,
-					      ConnectionStates0, Cert, KeyExAlg}, Renegotiation) of
-        #alert{} = Alert ->
-            ssl_connection:handle_own_alert(Alert, ClientVersion, hello,
-                                            State#state{negotiated_version
-                                                        = ClientVersion});
-        {Version, {Type, Session},
-	 ConnectionStates, Protocol0, ServerHelloExt, HashSign} ->
-	    Protocol = case Protocol0 of
-			   undefined -> CurrentProtocol;
-			   _ -> Protocol0
-		       end,
-            gen_handshake(?FUNCTION_NAME, internal, {common_client_hello, Type, ServerHelloExt},
-                          State#state{connection_states  = ConnectionStates,
-                                      negotiated_version = Version,
-                                      hashsign_algorithm = HashSign,
-                                      client_hello_version = ClientVersion,
-                                      session = Session,
-                                      negotiated_protocol = Protocol})
+
+    case choose_tls_version(SslOpts, Hello) of
+        'tls_v1.3' ->
+            %% Continue in TLS 1.3 'start' state
+            {next_state, start, State, [{next_event, internal, Hello}]};
+        'tls_v1.2' ->
+            case tls_handshake:hello(Hello,
+                                     SslOpts,
+                                     {Port, Session0, Cache, CacheCb,
+                                      ConnectionStates0, Cert, KeyExAlg},
+                                     Renegotiation) of
+                #alert{} = Alert ->
+                    ssl_connection:handle_own_alert(Alert, ClientVersion, hello,
+                                                    State#state{connection_env = CEnv#connection_env{negotiated_version
+                                                                                                     = ClientVersion}});
+                {Version, {Type, Session},
+                 ConnectionStates, Protocol0, ServerHelloExt, HashSign} ->
+                    Protocol = case Protocol0 of
+                                   undefined -> CurrentProtocol;
+                                   _ -> Protocol0
+                               end,
+                    gen_handshake(?FUNCTION_NAME,
+                                  internal,
+                                  {common_client_hello, Type, ServerHelloExt},
+                                  State#state{connection_states  = ConnectionStates,
+                                              connection_env = CEnv#connection_env{negotiated_version = Version},
+                                              handshake_env = HsEnv#handshake_env{
+                                                                hashsign_algorithm = HashSign,
+                                                                client_hello_version = ClientVersion,
+                                                                negotiated_protocol = Protocol},
+                                              session = Session
+                                             })
+            end
+
     end;
 hello(internal, #server_hello{} = Hello,      
       #state{connection_states = ConnectionStates0,
-	     negotiated_version = ReqVersion,
-	     role = client,
-	     renegotiation = {Renegotiation, _},
+             connection_env = #connection_env{negotiated_version = ReqVersion} = CEnv,
+	     static_env = #static_env{role = client},
+             handshake_env = #handshake_env{renegotiation = {Renegotiation, _}},
 	     ssl_options = SslOptions} = State) ->
     case tls_handshake:hello(Hello, SslOptions, ConnectionStates0, Renegotiation) of
-	#alert{} = Alert ->
+	#alert{} = Alert -> %%TODO
 	    ssl_connection:handle_own_alert(Alert, ReqVersion, hello,
-                                            State#state{negotiated_version = ReqVersion});
+                                            State#state{connection_env = CEnv#connection_env{negotiated_version = ReqVersion}});
 	{Version, NewId, ConnectionStates, ProtoExt, Protocol} ->
 	    ssl_connection:handle_session(Hello, 
 					  Version, NewId, ConnectionStates, ProtoExt, Protocol, State)
@@ -580,22 +697,77 @@ connection({call, From}, {user_renegotiate, WriteState},
            #state{connection_states = ConnectionStates} = State) ->
     {next_state,  ?FUNCTION_NAME, State#state{connection_states = ConnectionStates#{current_write => WriteState}}, 
      [{next_event,{call, From}, renegotiate}]};
+connection({call, From}, 
+           {close, {Pid, _Timeout}}, 
+           #state{connection_env = #connection_env{terminated = closed} =CEnv} = State) ->
+    {next_state, downgrade, State#state{connection_env = 
+                                            CEnv#connection_env{terminated = true, 
+                                                                downgrade = {Pid, From}}}, 
+     [{next_event, internal, ?ALERT_REC(?WARNING, ?CLOSE_NOTIFY)}]};
+connection({call, From}, 
+           {close,{Pid, Timeout}},
+           #state{connection_states = ConnectionStates,
+                  protocol_specific = #{sender := Sender},
+                  connection_env = CEnv
+                 } = State0) ->
+    case tls_sender:downgrade(Sender, Timeout) of
+        {ok, Write} ->
+            %% User downgrades connection
+            %% When downgrading an TLS connection to a transport connection
+            %% we must recive the close alert from the peer before releasing the 
+            %% transport socket.
+            State = send_alert(?ALERT_REC(?WARNING, ?CLOSE_NOTIFY), 
+                               State0#state{connection_states =
+                                                ConnectionStates#{current_write => Write}}),
+            {next_state, downgrade, State#state{connection_env = 
+                                                    CEnv#connection_env{downgrade = {Pid, From},
+                                                                        terminated = true}}, 
+             [{timeout, Timeout, downgrade}]};
+        {error, timeout} ->
+            {stop_and_reply, {shutdown, downgrade_fail}, [{reply, From, {error, timeout}}]}
+    end;
+connection(internal, #hello_request{},
+	   #state{static_env = #static_env{role = client,
+                                           host = Host,
+                                           port = Port,
+                                           session_cache = Cache,
+                                           session_cache_cb = CacheCb},
+                  handshake_env = #handshake_env{renegotiation = {Renegotiation, peer}},
+		  session = #session{own_certificate = Cert} = Session0,
+		  ssl_options = SslOpts, 
+                  protocol_specific = #{sender := Pid},
+		  connection_states = ConnectionStates} = State0) ->
+    try tls_sender:peer_renegotiate(Pid) of
+        {ok, Write} ->
+            Hello = tls_handshake:client_hello(Host, Port, ConnectionStates, SslOpts,
+                                               Cache, CacheCb, Renegotiation, Cert, undefined),
+            {State, Actions} = send_handshake(Hello, State0#state{connection_states = ConnectionStates#{current_write => Write}}),
+            next_event(hello, no_record, State#state{session = Session0#session{session_id
+                                                                      = Hello#client_hello.session_id}}, Actions)
+        catch 
+            _:_ ->
+                {stop, {shutdown, sender_blocked}, State0}
+        end;
 connection(internal, #hello_request{},
-	   #state{role = client, 
-                  renegotiation = {Renegotiation, _},
-                  host = Host, port = Port,
+	   #state{static_env = #static_env{role = client,
+                                           host = Host,
+                                           port = Port,
+                                           session_cache = Cache,
+                                           session_cache_cb = CacheCb},
+                  handshake_env = #handshake_env{renegotiation = {Renegotiation, _}},
 		  session = #session{own_certificate = Cert} = Session0,
-		  session_cache = Cache, session_cache_cb = CacheCb,
-		  ssl_options = SslOpts,                
+		  ssl_options = SslOpts, 
 		  connection_states = ConnectionStates} = State0) ->
     Hello = tls_handshake:client_hello(Host, Port, ConnectionStates, SslOpts,
-				       Cache, CacheCb, Renegotiation, Cert),
+				       Cache, CacheCb, Renegotiation, Cert, undefined),
+
     {State, Actions} = send_handshake(Hello, State0),
     next_event(hello, no_record, State#state{session = Session0#session{session_id
                                                                         = Hello#client_hello.session_id}}, Actions);
 connection(internal, #client_hello{} = Hello, 
-	   #state{role = server, allow_renegotiate = true, connection_states = CS,
-                  %%protocol_cb = Connection,
+	   #state{static_env = #static_env{role = server},
+                  handshake_env = #handshake_env{allow_renegotiate = true}= HsEnv,
+                  connection_states = CS,
                   protocol_specific = #{sender := Sender}
                  } = State) ->
     %% Mitigate Computational DoS attack
@@ -606,17 +778,18 @@ connection(internal, #client_hello{} = Hello,
     erlang:send_after(?WAIT_TO_ALLOW_RENEGOTIATION, self(), allow_renegotiate),
     {ok, Write} = tls_sender:renegotiate(Sender),
     next_event(hello, no_record, State#state{connection_states = CS#{current_write => Write},
-                                             allow_renegotiate = false,
-                                             renegotiation = {true, peer}
+                                             handshake_env = HsEnv#handshake_env{renegotiation = {true, peer},
+                                                                                 allow_renegotiate = false}
                                             }, 
                [{next_event, internal, Hello}]);
 connection(internal, #client_hello{}, 
-	   #state{role = server, allow_renegotiate = false,
-                  protocol_cb = Connection} = State0) ->
+	   #state{static_env = #static_env{role = server},
+                  handshake_env = #handshake_env{allow_renegotiate = false}} = State0) ->
     Alert = ?ALERT_REC(?WARNING, ?NO_RENEGOTIATION),
     send_alert_in_connection(Alert, State0),
-    State = Connection:reinit_handshake_data(State0),
+    State = reinit_handshake_data(State0),
     next_event(?FUNCTION_NAME, no_record, State);
+
 connection(Type, Event, State) ->
     ssl_connection:?FUNCTION_NAME(Type, Event, State, ?MODULE).
 
@@ -624,19 +797,147 @@ connection(Type, Event, State) ->
 -spec downgrade(gen_statem:event_type(), term(), #state{}) ->
 		       gen_statem:state_function_result().
 %%--------------------------------------------------------------------
+downgrade(internal, #alert{description = ?CLOSE_NOTIFY},
+	  #state{static_env = #static_env{transport_cb = Transport,
+                                          socket = Socket},
+		 connection_env = #connection_env{downgrade = {Pid, From}}} = State) ->
+    tls_socket:setopts(Transport, Socket, [{active, false}, {packet, 0}, {mode, binary}]),
+    Transport:controlling_process(Socket, Pid),
+    {stop_and_reply, {shutdown, downgrade},[{reply, From, {ok, Socket}}], State};
+downgrade(timeout, downgrade, #state{ connection_env = #connection_env{downgrade = {_, From}}} = State) ->
+    {stop_and_reply, {shutdown, normal},[{reply, From, {error, timeout}}], State};
+downgrade(info, {CloseTag, Socket},
+          #state{static_env = #static_env{socket = Socket, 
+                                          close_tag = CloseTag},
+                 connection_env = #connection_env{downgrade = {_, From}}} =
+              State) ->
+    {stop_and_reply, {shutdown, normal},[{reply, From, {error, CloseTag}}], State};
+downgrade(info, Info, State) ->
+    handle_info(Info, ?FUNCTION_NAME, State);
 downgrade(Type, Event, State) ->
      ssl_connection:?FUNCTION_NAME(Type, Event, State, ?MODULE).
 
+%%--------------------------------------------------------------------
+%% TLS 1.3 state functions
+%%--------------------------------------------------------------------
+%%--------------------------------------------------------------------
+-spec start(gen_statem:event_type(), term(), #state{}) ->
+			 gen_statem:state_function_result().
+%%--------------------------------------------------------------------
+start(info, Event, State) ->
+    gen_info_1_3(Event, ?FUNCTION_NAME, State);
+start(Type, Event, State) ->
+    gen_handshake_1_3(?FUNCTION_NAME, Type, Event, State).
+
+%%--------------------------------------------------------------------
+-spec negotiated(gen_statem:event_type(), term(), #state{}) ->
+			 gen_statem:state_function_result().
+%%--------------------------------------------------------------------
+negotiated(info, Event, State) ->
+    gen_info_1_3(Event, ?FUNCTION_NAME, State);
+negotiated(Type, Event, State) ->
+    gen_handshake_1_3(?FUNCTION_NAME, Type, Event, State).
+
+%%--------------------------------------------------------------------
+-spec recvd_ch(gen_statem:event_type(), term(), #state{}) ->
+			 gen_statem:state_function_result().
+%%--------------------------------------------------------------------
+recvd_ch(info, Event, State) ->
+    gen_info_1_3(Event, ?FUNCTION_NAME, State);
+recvd_ch(Type, Event, State) ->
+    gen_handshake_1_3(?FUNCTION_NAME, Type, Event, State).
+
+%%--------------------------------------------------------------------
+-spec wait_cert(gen_statem:event_type(), term(), #state{}) ->
+			 gen_statem:state_function_result().
+%%--------------------------------------------------------------------
+wait_cert(info, Event, State) ->
+    gen_info_1_3(Event, ?FUNCTION_NAME, State);
+wait_cert(Type, Event, State) ->
+    gen_handshake_1_3(?FUNCTION_NAME, Type, Event, State).
+
+%%--------------------------------------------------------------------
+-spec wait_cv(gen_statem:event_type(), term(), #state{}) ->
+			 gen_statem:state_function_result().
+%%--------------------------------------------------------------------
+wait_cv(info, Event, State) ->
+    gen_info_1_3(Event, ?FUNCTION_NAME, State);
+wait_cv(Type, Event, State) ->
+    gen_handshake_1_3(?FUNCTION_NAME, Type, Event, State).
+
+%%--------------------------------------------------------------------
+-spec wait_eoed(gen_statem:event_type(), term(), #state{}) ->
+			 gen_statem:state_function_result().
+%%--------------------------------------------------------------------
+wait_eoed(info, Event, State) ->
+    gen_info_1_3(Event, ?FUNCTION_NAME, State);
+wait_eoed(Type, Event, State) ->
+    gen_handshake_1_3(?FUNCTION_NAME, Type, Event, State).
+
+%%--------------------------------------------------------------------
+-spec wait_finished(gen_statem:event_type(), term(), #state{}) ->
+			 gen_statem:state_function_result().
+%%--------------------------------------------------------------------
+wait_finished(info, Event, State) ->
+    gen_info_1_3(Event, ?FUNCTION_NAME, State);
+wait_finished(Type, Event, State) ->
+    gen_handshake_1_3(?FUNCTION_NAME, Type, Event, State).
+
+%%--------------------------------------------------------------------
+-spec wait_flight2(gen_statem:event_type(), term(), #state{}) ->
+			 gen_statem:state_function_result().
+%%--------------------------------------------------------------------
+wait_flight2(info, Event, State) ->
+    gen_info_1_3(Event, ?FUNCTION_NAME, State);
+wait_flight2(Type, Event, State) ->
+    gen_handshake_1_3(?FUNCTION_NAME, Type, Event, State).
+
+%%--------------------------------------------------------------------
+-spec connected(gen_statem:event_type(), term(), #state{}) ->
+			 gen_statem:state_function_result().
+%%--------------------------------------------------------------------
+connected(info, Event, State) ->
+    gen_info_1_3(Event, ?FUNCTION_NAME, State);
+connected(Type, Event, State) ->
+    gen_handshake_1_3(?FUNCTION_NAME, Type, Event, State).
+
+%%--------------------------------------------------------------------
+-spec wait_cert_cr(gen_statem:event_type(), term(), #state{}) ->
+			 gen_statem:state_function_result().
+%%--------------------------------------------------------------------
+wait_cert_cr(info, Event, State) ->
+    gen_info_1_3(Event, ?FUNCTION_NAME, State);
+wait_cert_cr(Type, Event, State) ->
+    gen_handshake_1_3(?FUNCTION_NAME, Type, Event, State).
+
+%%--------------------------------------------------------------------
+-spec wait_ee(gen_statem:event_type(), term(), #state{}) ->
+			 gen_statem:state_function_result().
+%%--------------------------------------------------------------------
+wait_ee(info, Event, State) ->
+    gen_info_1_3(Event, ?FUNCTION_NAME, State);
+wait_ee(Type, Event, State) ->
+    gen_handshake_1_3(?FUNCTION_NAME, Type, Event, State).
+
+%%--------------------------------------------------------------------
+-spec wait_sh(gen_statem:event_type(), term(), #state{}) ->
+			 gen_statem:state_function_result().
+%%--------------------------------------------------------------------
+wait_sh(info, Event, State) ->
+    gen_info_1_3(Event, ?FUNCTION_NAME, State);
+wait_sh(Type, Event, State) ->
+    gen_handshake_1_3(?FUNCTION_NAME, Type, Event, State).
+
 %--------------------------------------------------------------------
 %% gen_statem callbacks
 %%--------------------------------------------------------------------
 callback_mode() ->
     state_functions.
 
-
-terminate(
-  {shutdown, sender_died, Reason}, _StateName,
-  #state{socket = Socket, transport_cb = Transport} = State) ->
+terminate({shutdown, {sender_died, Reason}}, _StateName,
+          #state{static_env = #static_env{socket = Socket, 
+                                          transport_cb = Transport}} 
+          = State) ->
     ssl_connection:handle_trusted_certs_db(State),
     close(Reason, Socket, Transport, undefined, undefined);
 terminate(Reason, StateName, State) ->
@@ -653,71 +954,69 @@ code_change(_OldVsn, StateName, State, _) ->
 %%% Internal functions
 %%--------------------------------------------------------------------
 initial_state(Role, Sender, Host, Port, Socket, {SSLOptions, SocketOptions, Tracker}, User,
-	      {CbModule, DataTag, CloseTag, ErrorTag}) ->
+	      {CbModule, DataTag, CloseTag, ErrorTag, PassiveTag}) ->
     #ssl_options{beast_mitigation = BeastMitigation,
                  erl_dist = IsErlDist} = SSLOptions,
     ConnectionStates = tls_record:init_connection_states(Role, BeastMitigation),
-    
-    ErlDistData = erl_dist_data(IsErlDist),
     SessionCacheCb = case application:get_env(ssl, session_cb) of
 			 {ok, Cb} when is_atom(Cb) ->
 			    Cb;
 			 _  ->
 			     ssl_session_cache
 		     end,
-
     InternalActiveN =  case application:get_env(ssl, internal_active_n) of
                            {ok, N} when is_integer(N) andalso (not IsErlDist) ->
                                N;
                            _  ->
                                ?INTERNAL_ACTIVE_N
                        end,
-    
     UserMonitor = erlang:monitor(process, User),
-
-    #state{socket_options = SocketOptions,
-	   ssl_options = SSLOptions,	   
-	   session = #session{is_resumable = new},
-	   transport_cb = CbModule,
-	   data_tag = DataTag,
-	   close_tag = CloseTag,
-	   error_tag = ErrorTag,
-	   role = Role,
-	   host = Host,
-	   port = Port,
-	   socket = Socket,
-           erl_dist_data = ErlDistData,
-	   connection_states = ConnectionStates,
-	   protocol_buffers = #protocol_buffers{},
-	   user_application = {UserMonitor, User},
-	   user_data_buffer = <<>>,
-	   session_cache_cb = SessionCacheCb,
-	   renegotiation = {false, first},
-	   allow_renegotiate = SSLOptions#ssl_options.client_renegotiation,
-	   start_or_recv_from = undefined,
-	   protocol_cb = ?MODULE,
-	   tracker = Tracker,
-	   flight_buffer = [],
-           protocol_specific = #{sender => Sender,
-                                 active_n => InternalActiveN,
-                                 active_n_toggle => true
-                                }
-	  }.
-
-erl_dist_data(true) ->
-    #{dist_handle => undefined,
-      dist_buffer => <<>>};
-erl_dist_data(false) ->
-    #{}.
-
-initialize_tls_sender(#state{role = Role,
-                             socket = Socket,
-                             socket_options = SockOpts,
-                             tracker = Tracker,
-                             protocol_cb = Connection,
-                             transport_cb = Transport,
-                             negotiated_version = Version,
-                             ssl_options = #ssl_options{renegotiate_at = RenegotiateAt},
+    InitStatEnv = #static_env{
+                     role = Role,
+                     transport_cb = CbModule,
+                     protocol_cb = ?MODULE,
+                     data_tag = DataTag,
+                     close_tag = CloseTag,
+                     error_tag = ErrorTag,
+                     passive_tag = PassiveTag,
+                     host = Host,
+                     port = Port,
+                     socket = Socket,
+                     session_cache_cb = SessionCacheCb,
+                     tracker = Tracker
+                    },
+    #state{
+       static_env = InitStatEnv,
+       handshake_env = #handshake_env{
+                          tls_handshake_history = ssl_handshake:init_handshake_history(),
+                          renegotiation = {false, first},
+                          allow_renegotiate = SSLOptions#ssl_options.client_renegotiation
+                         },
+       connection_env = #connection_env{user_application = {UserMonitor, User}},
+       socket_options = SocketOptions,
+       ssl_options = SSLOptions,
+       session = #session{is_resumable = new},
+       connection_states = ConnectionStates,
+       protocol_buffers = #protocol_buffers{},
+       user_data_buffer = {[],0,[]},
+       start_or_recv_from = undefined,
+       flight_buffer = [],
+       protocol_specific = #{sender => Sender,
+                             active_n => InternalActiveN,
+                             active_n_toggle => true
+                            }
+      }.
+
+initialize_tls_sender(#state{static_env = #static_env{
+                                             role = Role,
+                                             transport_cb = Transport,
+                                             socket = Socket,
+                                             tracker = Tracker
+                                            },
+                             connection_env = #connection_env{negotiated_version = Version},
+                             socket_options = SockOpts, 
+                             ssl_options = #ssl_options{renegotiate_at = RenegotiateAt,
+                                                        log_level = LogLevel},
                              connection_states = #{current_write := ConnectionWriteState},
                              protocol_specific = #{sender := Sender}}) ->
     Init = #{current_write => ConnectionWriteState,
@@ -725,19 +1024,29 @@ initialize_tls_sender(#state{role = Role,
              socket => Socket,
              socket_options => SockOpts,
              tracker => Tracker,
-             protocol_cb => Connection,
              transport_cb => Transport,
              negotiated_version => Version,
-             renegotiate_at => RenegotiateAt},
+             renegotiate_at => RenegotiateAt,
+             log_level => LogLevel},
     tls_sender:initialize(Sender, Init).
-    
-next_tls_record(Data, StateName, #state{protocol_buffers = 
-                                            #protocol_buffers{tls_record_buffer = Buf0,
-                                                              tls_cipher_texts = CT0} = Buffers}
-                                        = State0) ->
-    case tls_record:get_tls_records(Data, 
-                                    acceptable_record_versions(StateName, State0),
-                                    Buf0) of
+
+next_tls_record(Data, StateName,
+                         #state{protocol_buffers =
+                                    #protocol_buffers{tls_record_buffer = Buf0,
+                                                      tls_cipher_texts = CT0} = Buffers,
+                                ssl_options = SslOpts} = State0) ->
+    Versions =
+        %% TLS 1.3 Client/Server
+        %% - Ignore TLSPlaintext.legacy_record_version
+        %% - Verify that TLSCiphertext.legacy_record_version is set to  0x0303 for all records
+        %%   other than an initial ClientHello, where it MAY also be 0x0301.
+        case StateName of
+            hello ->
+                [tls_record:protocol_version(Vsn) || Vsn <- ?ALL_AVAILABLE_VERSIONS];
+            _ ->
+                State0#state.connection_env#connection_env.negotiated_version
+        end,
+    case tls_record:get_tls_records(Data, Versions, Buf0, SslOpts) of
 	{Records, Buf1} ->
 	    CT1 = CT0 ++ Records,
 	    next_record(State0#state{protocol_buffers =
@@ -748,10 +1057,6 @@ next_tls_record(Data, StateName, #state{protocol_buffers =
     end.
 
 
-acceptable_record_versions(hello, _) ->
-    [tls_record:protocol_version(Vsn) || Vsn <- ?ALL_AVAILABLE_VERSIONS];
-acceptable_record_versions(_, #state{negotiated_version = Version}) ->
-    [Version].
 handle_record_alert(Alert, _) ->
     Alert.
 
@@ -762,33 +1067,35 @@ tls_handshake_events(Packets) ->
 
 %% raw data from socket, upack records
 handle_info({Protocol, _, Data}, StateName,
-            #state{data_tag = Protocol
-                  } = State0) ->
+            #state{static_env = #static_env{data_tag = Protocol}} = State0) ->
     case next_tls_record(Data, StateName, State0) of
 	{Record, State} ->
 	    next_event(StateName, Record, State);
 	#alert{} = Alert ->
 	    ssl_connection:handle_normal_shutdown(Alert, StateName, State0), 
-	    ssl_connection:stop({shutdown, own_alert}, State0)
+	    {stop, {shutdown, own_alert}, State0}
     end;
-handle_info({tcp_passive, Socket},  StateName, #state{socket = Socket,
-                                                      protocol_specific = PS
-                                                     } = State) ->
-    next_event(StateName, no_record, State#state{protocol_specific = PS#{active_n_toggle => true}});
+handle_info({PassiveTag, Socket},  StateName, 
+            #state{static_env = #static_env{socket = Socket,
+                                            passive_tag = PassiveTag},
+                   protocol_specific = PS
+                  } = State) ->
+    next_event(StateName, no_record, 
+               State#state{protocol_specific = PS#{active_n_toggle => true}});
 handle_info({CloseTag, Socket}, StateName,
-            #state{socket = Socket, close_tag = CloseTag,
+            #state{static_env = #static_env{socket = Socket, close_tag = CloseTag},
+                   connection_env = #connection_env{negotiated_version = Version},
                    socket_options = #socket_options{active = Active},
                    protocol_buffers = #protocol_buffers{tls_cipher_texts = CTs},
-                   user_data_buffer = Buffer,
-                   protocol_specific = PS,
-		   negotiated_version = Version} = State) ->
+                   user_data_buffer = {_,BufferSize,_},
+                   protocol_specific = PS} = State) ->
 
     %% Note that as of TLS 1.1,
     %% failure to properly close a connection no longer requires that a
     %% session not be resumed.  This is a change from TLS 1.0 to conform
     %% with widespread implementation practice.
 
-    case (Active == false) andalso ((CTs =/= []) or (Buffer =/= <<>>)) of
+    case (Active == false) andalso ((CTs =/= []) or (BufferSize =/= 0)) of
         false ->
             case Version of
                 {1, N} when N >= 1 ->
@@ -802,7 +1109,7 @@ handle_info({CloseTag, Socket}, StateName,
             end,
 
             ssl_connection:handle_normal_shutdown(?ALERT_REC(?FATAL, ?CLOSE_NOTIFY), StateName, State),
-            ssl_connection:stop({shutdown, transport_closed}, State);
+            {stop, {shutdown, transport_closed}, State};
         true ->
             %% Fixes non-delivery of final TLS record in {active, once}.
             %% Basically allows the application the opportunity to set {active, once} again
@@ -812,7 +1119,7 @@ handle_info({CloseTag, Socket}, StateName,
     end;
 handle_info({'EXIT', Sender, Reason}, _,
             #state{protocol_specific = #{sender := Sender}} = State) ->
-    {stop, {shutdown, sender_died, Reason}, State};
+    {stop, {shutdown, {sender_died, Reason}}, State};
 handle_info(Msg, StateName, State) ->
     ssl_connection:StateName(info, Msg, State, ?MODULE).
 
@@ -820,6 +1127,14 @@ handle_alerts([], Result) ->
     Result;
 handle_alerts(_, {stop, _, _} = Stop) ->
     Stop;
+handle_alerts([#alert{level = ?WARNING, description = ?CLOSE_NOTIFY} | _Alerts], 
+              {next_state, connection = StateName, #state{connection_env = CEnv, 
+                                                          socket_options = #socket_options{active = false},
+                                                          user_data_buffer = {_,BufferSize,_},
+                                                          protocol_buffers = #protocol_buffers{tls_cipher_texts = CTs}} = 
+                   State}) when (BufferSize =/= 0) orelse
+                                (CTs =/= []) -> 
+    {next_state, StateName, State#state{connection_env = CEnv#connection_env{terminated = true}}};
 handle_alerts([Alert | Alerts], {next_state, StateName, State}) ->
      handle_alerts(Alerts, ssl_connection:handle_alert(Alert, StateName, State));
 handle_alerts([Alert | Alerts], {next_state, StateName, State, _Actions}) ->
@@ -835,11 +1150,12 @@ encode_handshake(Handshake, Version, ConnectionStates0, Hist0) ->
 encode_change_cipher(#change_cipher_spec{}, Version, ConnectionStates) ->
     tls_record:encode_change_cipher_spec(Version, ConnectionStates).
 
+-spec decode_alerts(binary()) -> list().
 decode_alerts(Bin) ->
     ssl_alert:decode(Bin).
 
 gen_handshake(StateName, Type, Event, 
-	      #state{negotiated_version = Version} = State) ->
+	      #state{connection_env = #connection_env{negotiated_version = Version}} = State) ->
     try ssl_connection:StateName(Type, Event, State, ?MODULE) of
 	Result ->
 	    Result
@@ -850,18 +1166,32 @@ gen_handshake(StateName, Type, Event,
 					    Version, StateName, State)  
     end.
 
-gen_info(Event, connection = StateName,  #state{negotiated_version = Version} = State) ->
+
+gen_handshake_1_3(StateName, Type, Event,
+	      #state{connection_env = #connection_env{negotiated_version = Version}} = State) ->
+    try tls_connection_1_3:StateName(Type, Event, State, ?MODULE) of
+	Result ->
+	    Result
+    catch
+	_:_ ->
+            ssl_connection:handle_own_alert(?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE,
+						       malformed_handshake_data),
+					    Version, StateName, State)
+    end.
+
+
+gen_info(Event, connection = StateName,  #state{connection_env = #connection_env{negotiated_version = Version}} = State) ->
     try handle_info(Event, StateName, State) of
 	Result ->
 	    Result
     catch 
-	_:_ ->
+        _:_ ->
 	    ssl_connection:handle_own_alert(?ALERT_REC(?FATAL, ?INTERNAL_ERROR, 
 						       malformed_data), 
 					    Version, StateName, State)  
     end;
 
-gen_info(Event, StateName, #state{negotiated_version = Version} = State) ->
+gen_info(Event, StateName, #state{connection_env = #connection_env{negotiated_version = Version}} = State) ->
     try handle_info(Event, StateName, State) of
 	Result ->
 	    Result
@@ -871,6 +1201,29 @@ gen_info(Event, StateName, #state{negotiated_version = Version} = State) ->
 						       malformed_handshake_data), 
 					    Version, StateName, State)  
     end.
+
+gen_info_1_3(Event, connected = StateName,  #state{connection_env = #connection_env{negotiated_version = Version}} = State) ->
+    try handle_info(Event, StateName, State) of
+	Result ->
+	    Result
+    catch
+        _:_ ->
+	    ssl_connection:handle_own_alert(?ALERT_REC(?FATAL, ?INTERNAL_ERROR,
+						       malformed_data),
+					    Version, StateName, State)
+    end;
+
+gen_info_1_3(Event, StateName, #state{connection_env = #connection_env{negotiated_version = Version}} = State) ->
+    try handle_info(Event, StateName, State) of
+	Result ->
+	    Result
+    catch
+        _:_ ->
+	    ssl_connection:handle_own_alert(?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE,
+						       malformed_handshake_data),
+					    Version, StateName, State)
+    end.
+
 	    
 unprocessed_events(Events) ->
     %% The first handshake event will be processed immediately
@@ -915,3 +1268,34 @@ ensure_sender_terminate(_,  #state{protocol_specific = #{sender := Sender}}) ->
                    end
            end,
     spawn(Kill).
+
+maybe_generate_client_shares(#ssl_options{
+                            versions = [Version|_],
+                            supported_groups =
+                                #supported_groups{
+                                  supported_groups = Groups}})
+  when Version =:= {3,4} ->
+    ssl_cipher:generate_client_shares(Groups);
+maybe_generate_client_shares(_) ->
+    undefined.
+
+choose_tls_version(#ssl_options{versions = Versions},
+                   #client_hello{
+                      extensions = #{client_hello_versions :=
+                                         #client_hello_versions{versions = ClientVersions}
+                                    }
+                     }) ->
+    case ssl_handshake:select_supported_version(ClientVersions, Versions) of
+        {3,4} ->
+            'tls_v1.3';
+        _Else ->
+            'tls_v1.2'
+    end;
+choose_tls_version(_, _) ->
+    'tls_v1.2'.
+
+
+effective_version(undefined, #ssl_options{versions = [Version|_]}) ->
+    Version;
+effective_version(Version, _) ->
+    Version.
diff --git a/lib/ssl/src/tls_connection.hrl b/lib/ssl/src/tls_connection.hrl
index 0af2258932..9063b1b736 100644
--- a/lib/ssl/src/tls_connection.hrl
+++ b/lib/ssl/src/tls_connection.hrl
@@ -30,7 +30,6 @@
 -include("tls_record.hrl").
 
 -record(protocol_buffers, {
-	  tls_packets = [], %%           :: [#ssl_tls{}],  % Not yet handled decode SSL/TLS packets.
           tls_record_buffer = <<>>, %%    :: binary(),  % Buffer of incomplete records
           tls_handshake_buffer = <<>>, %% :: binary(),  % Buffer of incomplete handshakes
 	  tls_cipher_texts = []       %%:: [binary()]
diff --git a/lib/ssl/src/tls_connection_1_3.erl b/lib/ssl/src/tls_connection_1_3.erl
new file mode 100644
index 0000000000..701a5860c2
--- /dev/null
+++ b/lib/ssl/src/tls_connection_1_3.erl
@@ -0,0 +1,192 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2007-2018. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+%%
+%%----------------------------------------------------------------------
+%% Purpose: TODO
+%%----------------------------------------------------------------------
+
+%% RFC 8446
+%% A.1.  Client
+%%
+%%                               START <----+
+%%                Send ClientHello |        | Recv HelloRetryRequest
+%%           [K_send = early data] |        |
+%%                                 v        |
+%%            /                 WAIT_SH ----+
+%%            |                    | Recv ServerHello
+%%            |                    | K_recv = handshake
+%%        Can |                    V
+%%       send |                 WAIT_EE
+%%      early |                    | Recv EncryptedExtensions
+%%       data |           +--------+--------+
+%%            |     Using |                 | Using certificate
+%%            |       PSK |                 v
+%%            |           |            WAIT_CERT_CR
+%%            |           |        Recv |       | Recv CertificateRequest
+%%            |           | Certificate |       v
+%%            |           |             |    WAIT_CERT
+%%            |           |             |       | Recv Certificate
+%%            |           |             v       v
+%%            |           |              WAIT_CV
+%%            |           |                 | Recv CertificateVerify
+%%            |           +> WAIT_FINISHED <+
+%%            |                  | Recv Finished
+%%            \                  | [Send EndOfEarlyData]
+%%                               | K_send = handshake
+%%                               | [Send Certificate [+ CertificateVerify]]
+%%     Can send                  | Send Finished
+%%     app data   -->            | K_send = K_recv = application
+%%     after here                v
+%%                           CONNECTED
+%%
+%% A.2.  Server
+%%
+%%                               START <-----+
+%%                Recv ClientHello |         | Send HelloRetryRequest
+%%                                 v         |
+%%                              RECVD_CH ----+
+%%                                 | Select parameters
+%%                                 v
+%%                              NEGOTIATED
+%%                                 | Send ServerHello
+%%                                 | K_send = handshake
+%%                                 | Send EncryptedExtensions
+%%                                 | [Send CertificateRequest]
+%%  Can send                       | [Send Certificate + CertificateVerify]
+%%  app data                       | Send Finished
+%%  after   -->                    | K_send = application
+%%  here                  +--------+--------+
+%%               No 0-RTT |                 | 0-RTT
+%%                        |                 |
+%%    K_recv = handshake  |                 | K_recv = early data
+%%  [Skip decrypt errors] |    +------> WAIT_EOED -+
+%%                        |    |       Recv |      | Recv EndOfEarlyData
+%%                        |    | early data |      | K_recv = handshake
+%%                        |    +------------+      |
+%%                        |                        |
+%%                        +> WAIT_FLIGHT2 <--------+
+%%                                 |
+%%                        +--------+--------+
+%%                No auth |                 | Client auth
+%%                        |                 |
+%%                        |                 v
+%%                        |             WAIT_CERT
+%%                        |        Recv |       | Recv Certificate
+%%                        |       empty |       v
+%%                        | Certificate |    WAIT_CV
+%%                        |             |       | Recv
+%%                        |             v       | CertificateVerify
+%%                        +-> WAIT_FINISHED <---+
+%%                                 | Recv Finished
+%%                                 | K_recv = application
+%%                                 v
+%%                             CONNECTED
+
+-module(tls_connection_1_3).
+
+-include("ssl_alert.hrl").
+-include("ssl_connection.hrl").
+-include("tls_handshake.hrl").
+-include("tls_handshake_1_3.hrl").
+
+%% gen_statem helper functions
+-export([start/4,
+         negotiated/4,
+         wait_cert/4,
+         wait_cv/4,
+         wait_finished/4
+        ]).
+
+
+start(internal, #change_cipher_spec{}, State0, _Module) ->
+    {Record, State} = tls_connection:next_record(State0),
+    tls_connection:next_event(?FUNCTION_NAME, Record, State);
+start(internal, #client_hello{} = Hello, State0, _Module) ->
+    case tls_handshake_1_3:do_start(Hello, State0) of
+        #alert{} = Alert ->
+            ssl_connection:handle_own_alert(Alert, {3,4}, start, State0);
+        {State, start} ->
+            {next_state, start, State, []};
+        {State, negotiated} ->
+            {next_state, negotiated, State, [{next_event, internal, start_handshake}]}
+    end;
+start(Type, Msg, State, Connection) ->
+    ssl_connection:handle_common_event(Type, Msg, ?FUNCTION_NAME, State, Connection).
+
+
+negotiated(internal, #change_cipher_spec{}, State0, _Module) ->
+    {Record, State} = tls_connection:next_record(State0),
+    tls_connection:next_event(?FUNCTION_NAME, Record, State);
+negotiated(internal, Message, State0, _Module) ->
+    case tls_handshake_1_3:do_negotiated(Message, State0) of
+        #alert{} = Alert ->
+            ssl_connection:handle_own_alert(Alert, {3,4}, negotiated, State0);
+        {State, NextState} ->
+            {next_state, NextState, State, []}
+    end.
+
+
+wait_cert(internal, #change_cipher_spec{}, State0, _Module) ->
+    {Record, State} = tls_connection:next_record(State0),
+    tls_connection:next_event(?FUNCTION_NAME, Record, State);
+wait_cert(internal,
+          #certificate_1_3{} = Certificate, State0, _Module) ->
+    case tls_handshake_1_3:do_wait_cert(Certificate, State0) of
+        {#alert{} = Alert, State} ->
+            ssl_connection:handle_own_alert(Alert, {3,4}, wait_cert, State);
+        {State1, NextState} ->
+            {Record, State} = tls_connection:next_record(State1),
+            tls_connection:next_event(NextState, Record, State)
+    end;
+wait_cert(Type, Msg, State, Connection) ->
+    ssl_connection:handle_common_event(Type, Msg, ?FUNCTION_NAME, State, Connection).
+
+
+wait_cv(internal, #change_cipher_spec{}, State0, _Module) ->
+    {Record, State} = tls_connection:next_record(State0),
+    tls_connection:next_event(?FUNCTION_NAME, Record, State);
+wait_cv(internal,
+          #certificate_verify_1_3{} = CertificateVerify, State0, _Module) ->
+    case tls_handshake_1_3:do_wait_cv(CertificateVerify, State0) of
+        {#alert{} = Alert, State} ->
+            ssl_connection:handle_own_alert(Alert, {3,4}, wait_cv, State);
+        {State1, NextState} ->
+            {Record, State} = tls_connection:next_record(State1),
+            tls_connection:next_event(NextState, Record, State)
+    end;
+wait_cv(Type, Msg, State, Connection) ->
+    ssl_connection:handle_common_event(Type, Msg, ?FUNCTION_NAME, State, Connection).
+
+
+wait_finished(internal, #change_cipher_spec{}, State0, _Module) ->
+    {Record, State} = tls_connection:next_record(State0),
+    tls_connection:next_event(?FUNCTION_NAME, Record, State);
+wait_finished(internal,
+             #finished{} = Finished, State0, Module) ->
+    case tls_handshake_1_3:do_wait_finished(Finished, State0) of
+        #alert{} = Alert ->
+            ssl_connection:handle_own_alert(Alert, {3,4}, finished, State0);
+        State1 ->
+            {Record, State} = ssl_connection:prepare_connection(State1, Module),
+            tls_connection:next_event(connection, Record, State)
+    end;
+wait_finished(Type, Msg, State, Connection) ->
+    ssl_connection:handle_common_event(Type, Msg, ?FUNCTION_NAME, State, Connection).
diff --git a/lib/ssl/src/tls_handshake.erl b/lib/ssl/src/tls_handshake.erl
index 19a5eb0348..e7cee1956b 100644
--- a/lib/ssl/src/tls_handshake.erl
+++ b/lib/ssl/src/tls_handshake.erl
@@ -26,14 +26,17 @@
 -module(tls_handshake).
 
 -include("tls_handshake.hrl").
+-include("tls_handshake_1_3.hrl").
 -include("tls_record.hrl").
 -include("ssl_alert.hrl").
 -include("ssl_internal.hrl").
 -include("ssl_cipher.hrl").
+-include("ssl_api.hrl").
 -include_lib("public_key/include/public_key.hrl").
+-include_lib("kernel/include/logger.hrl").
 
 %% Handshake handling
--export([client_hello/8, hello/4]).
+-export([client_hello/9, hello/4]).
 
 %% Handshake encoding
 -export([encode_handshake/2]).
@@ -47,8 +50,9 @@
 %% Handshake handling
 %%====================================================================
 %%--------------------------------------------------------------------
--spec client_hello(host(), inet:port_number(), ssl_record:connection_states(),
-		   #ssl_options{}, integer(), atom(), boolean(), der_cert()) ->
+-spec client_hello(ssl:host(), inet:port_number(), ssl_record:connection_states(),
+		   #ssl_options{}, integer(), atom(), boolean(), der_cert(),
+                   #key_share_client_hello{} | undefined) ->
 			  #client_hello{}.
 %%
 %% Description: Creates a client hello message.
@@ -58,19 +62,32 @@ client_hello(Host, Port, ConnectionStates,
 			  ciphers = UserSuites,
 			  fallback = Fallback
 			 } = SslOpts,
-	     Cache, CacheCb, Renegotiation, OwnCert) ->
+	     Cache, CacheCb, Renegotiation, OwnCert, KeyShare) ->
     Version = tls_record:highest_protocol_version(Versions),
+
+    %% In TLS 1.3, the client indicates its version preferences in the
+    %% "supported_versions" extension (Section 4.2.1) and the
+    %% legacy_version field MUST be set to 0x0303, which is the version
+    %% number for TLS 1.2.
+    LegacyVersion =
+        case tls_record:is_higher(Version, {3,2}) of
+            true ->
+                {3,3};
+            false ->
+                Version
+        end,
     #{security_parameters := SecParams} = 
         ssl_record:pending_connection_state(ConnectionStates, read),
     AvailableCipherSuites = ssl_handshake:available_suites(UserSuites, Version),     
     Extensions = ssl_handshake:client_hello_extensions(Version, 
 						       AvailableCipherSuites,
 						       SslOpts, ConnectionStates, 
-                                                       Renegotiation),
+                                                       Renegotiation,
+                                                       KeyShare),
     CipherSuites = ssl_handshake:cipher_suites(AvailableCipherSuites, Renegotiation, Fallback),
     Id = ssl_session:client_id({Host, Port, SslOpts}, Cache, CacheCb, OwnCert),    
     #client_hello{session_id = Id,
-		  client_version = Version,
+		  client_version = LegacyVersion,
 		  cipher_suites = CipherSuites,
 		  compression_methods = ssl_record:compressions(),
 		  random = SecParams#security_parameters.client_random,
@@ -81,17 +98,75 @@ client_hello(Host, Port, ConnectionStates,
 -spec hello(#server_hello{} | #client_hello{}, #ssl_options{},
 	    ssl_record:connection_states() | {inet:port_number(), #session{}, db_handle(),
 				    atom(), ssl_record:connection_states(), 
-				    binary() | undefined, ssl_cipher_format:key_algo()},
+				    binary() | undefined, ssl:kex_algo()},
 	    boolean()) ->
-		   {tls_record:tls_version(), session_id(), 
+		   {tls_record:tls_version(), ssl:session_id(), 
 		    ssl_record:connection_states(), alpn | npn, binary() | undefined}|
 		   {tls_record:tls_version(), {resumed | new, #session{}}, 
 		    ssl_record:connection_states(), binary() | undefined, 
-		    #hello_extensions{}, {ssl_cipher_format:hash(), ssl_cipher_format:sign_algo()} | 
+                    HelloExt::map(), {ssl:hash(), ssl:sign_algo()} | 
                     undefined} | #alert{}.
 %%
 %% Description: Handles a received hello message
 %%--------------------------------------------------------------------
+
+
+%% TLS 1.3 - Section 4.1.3
+%% TLS 1.3 clients receiving a ServerHello indicating TLS 1.2 or below
+%% MUST check that the last eight bytes are not equal to either of these
+%% values.
+hello(#server_hello{server_version = {Major, Minor},
+                    random = <<_:24/binary,Down:8/binary>>},
+      #ssl_options{versions = [{M,N}|_]}, _, _)
+  when (M > 3 orelse M =:= 3 andalso N >= 4) andalso  %% TLS 1.3 client
+       (Major =:= 3 andalso Minor =:= 3 andalso       %% Negotiating TLS 1.2
+        Down =:= ?RANDOM_OVERRIDE_TLS12) orelse
+
+       (M > 3 orelse M =:= 3 andalso N >= 4) andalso  %% TLS 1.3 client
+       (Major =:= 3 andalso Minor < 3 andalso         %% Negotiating TLS 1.1 or prior
+        Down =:= ?RANDOM_OVERRIDE_TLS11) ->
+    ?ALERT_REC(?FATAL, ?ILLEGAL_PARAMETER);
+
+%% TLS 1.2 clients SHOULD also check that the last eight bytes are not
+%% equal to the second value if the ServerHello indicates TLS 1.1 or below.
+hello(#server_hello{server_version = {Major, Minor},
+                    random = <<_:24/binary,Down:8/binary>>},
+      #ssl_options{versions = [{M,N}|_]}, _, _)
+  when (M =:= 3 andalso N =:= 3) andalso              %% TLS 1.2 client
+       (Major =:= 3 andalso Minor < 3 andalso         %% Negotiating TLS 1.1 or prior
+        Down =:= ?RANDOM_OVERRIDE_TLS11) ->
+    ?ALERT_REC(?FATAL, ?ILLEGAL_PARAMETER);
+
+
+%% TLS 1.3 - 4.2.1.  Supported Versions
+%% If the "supported_versions" extension in the ServerHello contains a
+%% version not offered by the client or contains a version prior to TLS
+%% 1.3, the client MUST abort the handshake with an "illegal_parameter"
+%% alert.
+%%--------------------------------------------------------------------
+%% TLS 1.2 Client
+%%
+%% - If "supported_version" is present (ServerHello):
+%%   - Abort handshake with an "illegal_parameter" alert
+hello(#server_hello{server_version = Version,
+                    extensions = #{server_hello_selected_version :=
+                                       #server_hello_selected_version{selected_version = Version}}
+                   },
+      #ssl_options{versions = SupportedVersions},
+      _ConnectionStates0, _Renegotiation) ->
+    case tls_record:is_higher({3,4}, Version) of
+        true ->
+            ?ALERT_REC(?FATAL, ?ILLEGAL_PARAMETER);
+        false ->
+            case tls_record:is_acceptable_version(Version, SupportedVersions) of
+                true ->
+                    %% Implement TLS 1.3 statem ???
+                    ?ALERT_REC(?FATAL, ?PROTOCOL_VERSION);
+                false ->
+                    ?ALERT_REC(?FATAL, ?ILLEGAL_PARAMETER)
+            end
+    end;
+
 hello(#server_hello{server_version = Version, random = Random,
 		    cipher_suite = CipherSuite,
 		    compression_method = Compression,
@@ -106,6 +181,36 @@ hello(#server_hello{server_version = Version, random = Random,
 	false ->
 	    ?ALERT_REC(?FATAL, ?PROTOCOL_VERSION)
     end;
+
+
+%% TLS 1.2 Server
+%% - If "supported_versions" is present (ClientHello):
+%%   - Select version from "supported_versions" (ignore ClientHello.legacy_version)
+%%   - If server only supports versions greater than "supported_versions":
+%%     - Abort handshake with a "protocol_version" alert (*)
+%% - If "supported_versions" is absent (ClientHello):
+%%   - Negotiate the minimum of ClientHello.legacy_version and TLS 1.2 (**)
+%%   - If server only supports versions greater than ClientHello.legacy_version:
+%%     - Abort handshake with a "protocol_version" alert
+%%
+%% (*)  Sends alert even if there is a gap in supported versions
+%%      e.g. Server 1.0,1.2 Client 1.1,1.3
+%% (**) Current implementation can negotiate a version not supported by the client
+%%      e.g. Server 1.0,1.2 Client 1.1 -> ServerHello 1.0
+hello(#client_hello{client_version = _ClientVersion,
+		    cipher_suites = CipherSuites,
+                    extensions = #{client_hello_versions :=
+                                       #client_hello_versions{versions = ClientVersions}
+                                  }} = Hello,
+      #ssl_options{versions = Versions} = SslOpts,
+      Info, Renegotiation) ->
+    try
+        Version = ssl_handshake:select_supported_version(ClientVersions, Versions),
+        do_hello(Version, Versions, CipherSuites, Hello, SslOpts, Info, Renegotiation)
+    catch
+	_:_ ->
+	    ?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, malformed_handshake_data)
+    end;
 			       
 hello(#client_hello{client_version = ClientVersion,
 		    cipher_suites = CipherSuites} = Hello,
@@ -113,18 +218,7 @@ hello(#client_hello{client_version = ClientVersion,
       Info, Renegotiation) ->
     try
 	Version = ssl_handshake:select_version(tls_record, ClientVersion, Versions),
-	case ssl_cipher:is_fallback(CipherSuites) of
-	true -> 
-		Highest = tls_record:highest_protocol_version(Versions),
-		case tls_record:is_higher(Highest, Version) of
-		    true ->
-			?ALERT_REC(?FATAL, ?INAPPROPRIATE_FALLBACK);
-		    false ->				     
-			handle_client_hello(Version, Hello, SslOpts, Info, Renegotiation)
-		end;
-	    false ->
-		handle_client_hello(Version, Hello, SslOpts, Info, Renegotiation)
-	end
+        do_hello(Version, Versions, CipherSuites, Hello, SslOpts, Info, Renegotiation)
     catch
         error:{case_clause,{asn1, Asn1Reason}} ->
 	    %% ASN-1 decode of certificate somehow failed
@@ -139,7 +233,8 @@ hello(#client_hello{client_version = ClientVersion,
 %%--------------------------------------------------------------------
 
 %%--------------------------------------------------------------------
--spec encode_handshake(tls_handshake(), tls_record:tls_version()) -> iolist().
+-spec encode_handshake(tls_handshake() | tls_handshake_1_3:tls_handshake_1_3(),
+                       tls_record:tls_version()) -> iolist().
 %%     
 %% Description: Encode a handshake packet
 %%--------------------------------------------------------------------
@@ -175,10 +270,7 @@ handle_client_hello(Version,
                                   cipher_suites = CipherSuites,
                                   compression_methods = Compressions,
                                   random = Random,
-                                  extensions = 
-                                      #hello_extensions{elliptic_curves = Curves,
-                                                        signature_algs = ClientHashSigns} 
-                                  = HelloExt},
+                                  extensions = HelloExt},
 		    #ssl_options{versions = Versions,
 				 signature_algs = SupportedHashSigns,
 				 eccs = SupportedECCs,
@@ -187,6 +279,9 @@ handle_client_hello(Version,
                     Renegotiation) ->
     case tls_record:is_acceptable_version(Version, Versions) of
 	true ->
+            Curves = maps:get(elliptic_curves, HelloExt, undefined),
+            ClientHashSigns = maps:get(signature_algs, HelloExt, undefined),
+            ClientSignatureSchemes = maps:get(signature_algs_cert, HelloExt, undefined),
 	    AvailableHashSigns = ssl_handshake:available_signature_algs(
 				   ClientHashSigns, SupportedHashSigns, Cert, Version),
 	    ECCCurve = ssl_handshake:select_curve(Curves, SupportedECCs, ECCOrder),
@@ -200,8 +295,10 @@ handle_client_hello(Version,
                     ?ALERT_REC(?FATAL, ?INSUFFICIENT_SECURITY, no_suitable_ciphers);
 		_ ->
 		    #{key_exchange := KeyExAlg} = ssl_cipher_format:suite_definition(CipherSuite),
-		    case ssl_handshake:select_hashsign(ClientHashSigns, Cert, KeyExAlg, 
-                                                       SupportedHashSigns, Version) of
+		    case ssl_handshake:select_hashsign({ClientHashSigns, ClientSignatureSchemes},
+                                                       Cert, KeyExAlg,
+                                                       SupportedHashSigns,
+                                                       Version) of
 			#alert{} = Alert ->
 			    Alert;
 			HashSign ->
@@ -223,8 +320,6 @@ handle_client_hello_extensions(Version, Type, Random, CipherSuites,
 						     HelloExt, Version, SslOpts,
 						     Session0, ConnectionStates0, 
                                                      Renegotiation) of
-	#alert{} = Alert ->
-	    Alert;
 	{Session, ConnectionStates, Protocol, ServerHelloExt} ->
 	    {Version, {Type, Session}, ConnectionStates, Protocol, 
              ServerHelloExt, HashSign}
@@ -235,17 +330,35 @@ handle_client_hello_extensions(Version, Type, Random, CipherSuites,
 
 handle_server_hello_extensions(Version, SessionId, Random, CipherSuite,
 			Compression, HelloExt, SslOpt, ConnectionStates0, Renegotiation) ->
-    case ssl_handshake:handle_server_hello_extensions(tls_record, Random, CipherSuite,
+    try ssl_handshake:handle_server_hello_extensions(tls_record, Random, CipherSuite,
 						      Compression, HelloExt, Version,
 						      SslOpt, ConnectionStates0, 
-                                                      Renegotiation) of
-	#alert{} = Alert ->
-	    Alert;
+                                                     Renegotiation) of
 	{ConnectionStates, ProtoExt, Protocol} ->
 	    {Version, SessionId, ConnectionStates, ProtoExt, Protocol}
+    catch throw:Alert ->
+	    Alert
     end.
+
+
+do_hello(undefined, _Versions, _CipherSuites, _Hello, _SslOpts, _Info, _Renegotiation) ->
+    ?ALERT_REC(?FATAL, ?PROTOCOL_VERSION);
+do_hello(Version, Versions, CipherSuites, Hello, SslOpts, Info, Renegotiation) ->
+    case ssl_cipher:is_fallback(CipherSuites) of
+        true ->
+            Highest = tls_record:highest_protocol_version(Versions),
+            case tls_record:is_higher(Highest, Version) of
+                true ->
+                    ?ALERT_REC(?FATAL, ?INAPPROPRIATE_FALLBACK);
+                false ->
+                    handle_client_hello(Version, Hello, SslOpts, Info, Renegotiation)
+            end;
+        false ->
+            handle_client_hello(Version, Hello, SslOpts, Info, Renegotiation)
+    end.
+
 %%--------------------------------------------------------------------
-enc_handshake(#hello_request{}, _Version) ->
+enc_handshake(#hello_request{}, {3, N}) when N < 4 ->
     {?HELLO_REQUEST, <<>>};
 enc_handshake(#client_hello{client_version = {Major, Minor},
 		     random = Random,
@@ -264,7 +377,8 @@ enc_handshake(#client_hello{client_version = {Major, Minor},
 		      ?BYTE(SIDLength), SessionID/binary,
 		      ?UINT16(CsLength), BinCipherSuites/binary,
 		      ?BYTE(CmLength), BinCompMethods/binary, ExtensionsBin/binary>>};
-
+enc_handshake(HandshakeMsg, {3, 4}) ->
+    tls_handshake_1_3:encode_handshake(HandshakeMsg);
 enc_handshake(HandshakeMsg, Version) ->
     ssl_handshake:encode_handshake(HandshakeMsg, Version).
 
@@ -275,6 +389,7 @@ get_tls_handshake_aux(Version, <<?BYTE(Type), ?UINT24(Length),
     Raw = <<?BYTE(Type), ?UINT24(Length), Body/binary>>,
     try decode_handshake(Version, Type, Body) of
 	Handshake ->
+            ssl_logger:debug(Opts#ssl_options.log_level, inbound, 'handshake', Handshake),
 	    get_tls_handshake_aux(Version, Rest, Opts, [{Handshake,Raw} | Acc])
     catch
 	_:_ ->
@@ -283,24 +398,26 @@ get_tls_handshake_aux(Version, <<?BYTE(Type), ?UINT24(Length),
 get_tls_handshake_aux(_Version, Data, _, Acc) ->
     {lists:reverse(Acc), Data}.
 
-decode_handshake(_, ?HELLO_REQUEST, <<>>) ->
+decode_handshake({3, N}, ?HELLO_REQUEST, <<>>) when N < 4 ->
     #hello_request{};
-decode_handshake(_Version, ?CLIENT_HELLO, 
+decode_handshake(Version, ?CLIENT_HELLO,
                  <<?BYTE(Major), ?BYTE(Minor), Random:32/binary,
                    ?BYTE(SID_length), Session_ID:SID_length/binary,
                    ?UINT16(Cs_length), CipherSuites:Cs_length/binary,
                    ?BYTE(Cm_length), Comp_methods:Cm_length/binary,
                    Extensions/binary>>) ->
-    DecodedExtensions = ssl_handshake:decode_hello_extensions({client, Extensions}),
+    Exts = ssl_handshake:decode_vector(Extensions),
+    DecodedExtensions = ssl_handshake:decode_hello_extensions(Exts, Version, {Major, Minor},
+                                                              client_hello),
     #client_hello{
        client_version = {Major,Minor},
        random = Random,
        session_id = Session_ID,
        cipher_suites = ssl_handshake:decode_suites('2_bytes', CipherSuites),
-       compression_methods = Comp_methods,
+       compression_methods = erlang:binary_to_list(Comp_methods),
        extensions = DecodedExtensions
       };
+decode_handshake({3, 4}, Tag, Msg) ->
+    tls_handshake_1_3:decode_handshake(Tag, Msg);
 decode_handshake(Version, Tag, Msg) ->
     ssl_handshake:decode_handshake(Version, Tag, Msg).
-
-
diff --git a/lib/ssl/src/tls_handshake.hrl b/lib/ssl/src/tls_handshake.hrl
index f6644f64af..fc67bb61fd 100644
--- a/lib/ssl/src/tls_handshake.hrl
+++ b/lib/ssl/src/tls_handshake.hrl
@@ -32,6 +32,7 @@
 	  client_version,
 	  random,             
 	  session_id,          % opaque SessionID<0..32>
+	  cookie,              % opaque<2..2^16-1>
 	  cipher_suites,       % cipher_suites<2..2^16-1>
 	  compression_methods, % compression_methods<1..2^8-1>,
 	  %% Extensions
diff --git a/lib/ssl/src/tls_handshake_1_3.erl b/lib/ssl/src/tls_handshake_1_3.erl
new file mode 100644
index 0000000000..0efedf3400
--- /dev/null
+++ b/lib/ssl/src/tls_handshake_1_3.erl
@@ -0,0 +1,1341 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2007-2018. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+%%----------------------------------------------------------------------
+%% Purpose: Help funtions for handling the TLS 1.3 (specific parts of)
+%%% TLS handshake protocol
+%%----------------------------------------------------------------------
+
+-module(tls_handshake_1_3).
+
+-include("tls_handshake_1_3.hrl").
+-include("ssl_alert.hrl").
+-include("ssl_cipher.hrl").
+-include("ssl_connection.hrl").
+-include("ssl_internal.hrl").
+-include("ssl_record.hrl").
+-include_lib("public_key/include/public_key.hrl").
+
+%% Encode
+-export([encode_handshake/1, decode_handshake/2]).
+
+%% Create handshake messages
+-export([certificate/5,
+         certificate_verify/4,
+         encrypted_extensions/0,
+         server_hello/4]).
+
+-export([do_start/2,
+         do_negotiated/2,
+         do_wait_cert/2,
+         do_wait_cv/2,
+         do_wait_finished/2]).
+
+%%====================================================================
+%% Create handshake messages
+%%====================================================================
+
+server_hello(MsgType, SessionId, KeyShare, ConnectionStates) ->
+    #{security_parameters := SecParams} =
+	ssl_record:pending_connection_state(ConnectionStates, read),
+    Extensions = server_hello_extensions(MsgType, KeyShare),
+    #server_hello{server_version = {3,3}, %% legacy_version
+		  cipher_suite = SecParams#security_parameters.cipher_suite,
+                  compression_method = 0, %% legacy attribute
+		  random = server_hello_random(MsgType, SecParams),
+		  session_id = SessionId,
+		  extensions = Extensions
+		 }.
+
+server_hello_extensions(MsgType, KeyShare) ->
+    SupportedVersions = #server_hello_selected_version{selected_version = {3,4}},
+    Extensions = #{server_hello_selected_version => SupportedVersions},
+    ssl_handshake:add_server_share(MsgType, Extensions, KeyShare).
+
+server_hello_random(server_hello, #security_parameters{server_random = Random}) ->
+    Random;
+%% For reasons of backward compatibility with middleboxes (see
+%% Appendix D.4), the HelloRetryRequest message uses the same structure
+%% as the ServerHello, but with Random set to the special value of the
+%% SHA-256 of "HelloRetryRequest":
+%%
+%%   CF 21 AD 74 E5 9A 61 11 BE 1D 8C 02 1E 65 B8 91
+%%   C2 A2 11 16 7A BB 8C 5E 07 9E 09 E2 C8 A8 33 9C
+server_hello_random(hello_retry_request, _) ->
+    crypto:hash(sha256, "HelloRetryRequest").
+
+
+%% TODO: implement support for encrypted_extensions
+encrypted_extensions() ->
+    #encrypted_extensions{
+       extensions = #{}
+      }.
+
+
+certificate_request(SignAlgs0, SignAlgsCert0) ->
+    %% Input arguments contain TLS 1.2 algorithms due to backward compatibility
+    %% reasons. These {Hash, Algo} tuples must be filtered before creating the
+    %% the extensions.
+    SignAlgs = filter_tls13_algs(SignAlgs0),
+    SignAlgsCert = filter_tls13_algs(SignAlgsCert0),
+    Extensions0 = add_signature_algorithms(#{}, SignAlgs),
+    Extensions = add_signature_algorithms_cert(Extensions0, SignAlgsCert),
+    #certificate_request_1_3{
+      certificate_request_context = <<>>,
+      extensions = Extensions}.
+
+
+add_signature_algorithms(Extensions, SignAlgs) ->
+    Extensions#{signature_algorithms =>
+                    #signature_algorithms{signature_scheme_list = SignAlgs}}.
+
+
+add_signature_algorithms_cert(Extensions, undefined) ->
+    Extensions;
+add_signature_algorithms_cert(Extensions, SignAlgsCert) ->
+    Extensions#{signature_algorithms_cert =>
+                    #signature_algorithms{signature_scheme_list = SignAlgsCert}}.
+
+
+filter_tls13_algs(undefined) -> undefined;
+filter_tls13_algs(Algo) ->
+    lists:filter(fun is_atom/1, Algo).
+
+
+%% TODO: use maybe monad for error handling!
+%% enum {
+%%     X509(0),
+%%     RawPublicKey(2),
+%%     (255)
+%% } CertificateType;
+%%
+%% struct {
+%%     select (certificate_type) {
+%%         case RawPublicKey:
+%%           /* From RFC 7250 ASN.1_subjectPublicKeyInfo */
+%%           opaque ASN1_subjectPublicKeyInfo<1..2^24-1>;
+%%
+%%         case X509:
+%%           opaque cert_data<1..2^24-1>;
+%%     };
+%%     Extension extensions<0..2^16-1>;
+%% } CertificateEntry;
+%%
+%% struct {
+%%     opaque certificate_request_context<0..2^8-1>;
+%%     CertificateEntry certificate_list<0..2^24-1>;
+%% } Certificate;
+certificate(OwnCert, CertDbHandle, CertDbRef, _CRContext, server) ->
+    case ssl_certificate:certificate_chain(OwnCert, CertDbHandle, CertDbRef) of
+	{ok, _, Chain} ->
+            CertList = chain_to_cert_list(Chain),
+            %% If this message is in response to a CertificateRequest, the value of
+            %% certificate_request_context in that message. Otherwise (in the case
+            %%of server authentication), this field SHALL be zero length.
+	    #certificate_1_3{
+               certificate_request_context = <<>>,
+               certificate_list = CertList};
+	{error, Error} ->
+            ?ALERT_REC(?FATAL, ?INTERNAL_ERROR, {server_has_no_suitable_certificates, Error})
+    end.
+
+
+certificate_verify(PrivateKey, SignatureScheme,
+                   #state{connection_states = ConnectionStates,
+                          handshake_env =
+                              #handshake_env{
+                                 tls_handshake_history = {Messages, _}}}, server) ->
+    #{security_parameters := SecParamsR} =
+        ssl_record:pending_connection_state(ConnectionStates, write),
+    #security_parameters{prf_algorithm = HKDFAlgo} = SecParamsR,
+
+    {HashAlgo, _, _} =
+        ssl_cipher:scheme_to_components(SignatureScheme),
+
+    Context = lists:reverse(Messages),
+
+    %% Transcript-Hash uses the HKDF hash function defined by the cipher suite.
+    THash = tls_v1:transcript_hash(Context, HKDFAlgo),
+
+    %% Digital signatures use the hash function defined by the selected signature
+    %% scheme.
+    case sign(THash, <<"TLS 1.3, server CertificateVerify">>,
+                        HashAlgo, PrivateKey) of
+        {ok, Signature} ->
+            {ok, #certificate_verify_1_3{
+                    algorithm = SignatureScheme,
+                    signature = Signature
+                   }};
+        {error, badarg} ->
+            {error, badarg}
+
+    end.
+
+
+finished(#state{connection_states = ConnectionStates,
+                handshake_env =
+                    #handshake_env{
+                       tls_handshake_history = {Messages, _}}}) ->
+    #{security_parameters := SecParamsR,
+     cipher_state := #cipher_state{finished_key = FinishedKey}} =
+        ssl_record:current_connection_state(ConnectionStates, write),
+    #security_parameters{prf_algorithm = HKDFAlgo} = SecParamsR,
+
+    VerifyData = tls_v1:finished_verify_data(FinishedKey, HKDFAlgo, Messages),
+
+    #finished{
+       verify_data = VerifyData
+      }.
+
+
+%%====================================================================
+%% Encode handshake
+%%====================================================================
+
+encode_handshake(#certificate_request_1_3{
+                    certificate_request_context = Context, 
+                    extensions = Exts})->
+    EncContext = encode_cert_req_context(Context),
+    BinExts = encode_extensions(Exts),
+    {?CERTIFICATE_REQUEST, <<EncContext/binary, BinExts/binary>>};
+encode_handshake(#certificate_1_3{
+                    certificate_request_context = Context, 
+                    certificate_list = Entries}) ->
+    EncContext = encode_cert_req_context(Context),
+    EncEntries = encode_cert_entries(Entries),
+    {?CERTIFICATE, <<EncContext/binary, EncEntries/binary>>};
+encode_handshake(#certificate_verify_1_3{
+                    algorithm = Algorithm,
+                    signature = Signature}) ->
+    EncAlgo = encode_algorithm(Algorithm),
+    EncSign = encode_signature(Signature),
+    {?CERTIFICATE_VERIFY, <<EncAlgo/binary, EncSign/binary>>};
+encode_handshake(#encrypted_extensions{extensions = Exts})->
+    {?ENCRYPTED_EXTENSIONS, encode_extensions(Exts)};        
+encode_handshake(#new_session_ticket{
+                    ticket_lifetime = LifeTime,  
+                    ticket_age_add = Age,   
+                    ticket_nonce = Nonce,     
+                    ticket = Ticket,           
+                    extensions = Exts}) ->
+    TicketSize = byte_size(Ticket),
+    BinExts = encode_extensions(Exts),
+    {?NEW_SESSION_TICKET, <<?UINT32(LifeTime), ?UINT32(Age),
+                            ?BYTE(Nonce), ?UINT16(TicketSize), Ticket/binary,
+                            BinExts/binary>>};
+encode_handshake(#end_of_early_data{}) ->
+    {?END_OF_EARLY_DATA, <<>>};
+encode_handshake(#key_update{request_update = Update}) ->
+    {?KEY_UPDATE, <<?BYTE(Update)>>};
+encode_handshake(HandshakeMsg) ->
+    ssl_handshake:encode_handshake(HandshakeMsg, {3,4}).
+
+
+%%====================================================================
+%% Decode handshake
+%%====================================================================
+
+decode_handshake(?CERTIFICATE_REQUEST, <<?BYTE(0), ?UINT16(Size), EncExts:Size/binary>>) ->
+    Exts = decode_extensions(EncExts, certificate_request),
+    #certificate_request_1_3{
+       certificate_request_context = <<>>,
+       extensions = Exts};
+decode_handshake(?CERTIFICATE_REQUEST, <<?BYTE(CSize), Context:CSize/binary,
+                                         ?UINT16(Size), EncExts:Size/binary>>) ->
+    Exts = decode_extensions(EncExts, certificate_request),
+    #certificate_request_1_3{
+       certificate_request_context = Context,
+       extensions = Exts};
+decode_handshake(?CERTIFICATE, <<?BYTE(0), ?UINT24(Size), Certs:Size/binary>>) ->
+    CertList = decode_cert_entries(Certs),
+    #certificate_1_3{ 
+       certificate_request_context = <<>>,
+       certificate_list = CertList
+      };
+decode_handshake(?CERTIFICATE, <<?BYTE(CSize), Context:CSize/binary,
+                                 ?UINT24(Size), Certs:Size/binary>>) ->
+    CertList = decode_cert_entries(Certs),
+    #certificate_1_3{ 
+       certificate_request_context = Context,
+       certificate_list = CertList
+      };
+decode_handshake(?CERTIFICATE_VERIFY, <<?UINT16(EncAlgo), ?UINT16(Size), Signature:Size/binary>>) ->
+    Algorithm = ssl_cipher:signature_scheme(EncAlgo),
+    #certificate_verify_1_3{
+       algorithm = Algorithm,
+       signature = Signature};
+decode_handshake(?ENCRYPTED_EXTENSIONS, <<?UINT16(Size), EncExts:Size/binary>>) ->
+    #encrypted_extensions{
+       extensions = decode_extensions(EncExts, encrypted_extensions)
+      };
+decode_handshake(?NEW_SESSION_TICKET, <<?UINT32(LifeTime), ?UINT32(Age),
+                                        ?BYTE(Nonce), ?UINT16(TicketSize), Ticket:TicketSize/binary,
+                                        BinExts/binary>>) ->
+    Exts = decode_extensions(BinExts, encrypted_extensions),
+    #new_session_ticket{ticket_lifetime = LifeTime,  
+                        ticket_age_add = Age,   
+                        ticket_nonce = Nonce,     
+                        ticket = Ticket,           
+                        extensions = Exts};
+decode_handshake(?END_OF_EARLY_DATA, _) ->
+    #end_of_early_data{};
+decode_handshake(?KEY_UPDATE, <<?BYTE(Update)>>) ->
+    #key_update{request_update = Update};
+decode_handshake(Tag, HandshakeMsg) ->
+    ssl_handshake:decode_handshake({3,4}, Tag, HandshakeMsg).
+
+%%--------------------------------------------------------------------
+%%% Internal functions
+%%--------------------------------------------------------------------
+encode_cert_req_context(<<>>) ->
+    <<?BYTE(0)>>;
+encode_cert_req_context(Bin) ->
+    Size = byte_size(Bin),
+    <<?BYTE(Size), Bin/binary>>.
+
+encode_cert_entries(Entries) ->
+    CertEntryList = encode_cert_entries(Entries, []),
+    Size = byte_size(CertEntryList),
+    <<?UINT24(Size), CertEntryList/binary>>.
+ 
+encode_cert_entries([], Acc) ->
+    iolist_to_binary(lists:reverse(Acc));
+encode_cert_entries([#certificate_entry{data = Data,
+                                        extensions = Exts} | Rest], Acc) ->
+    DSize = byte_size(Data),
+    BinExts = encode_extensions(Exts),
+    encode_cert_entries(Rest, 
+                        [<<?UINT24(DSize), Data/binary, BinExts/binary>> | Acc]).
+
+encode_algorithm(Algo) ->
+    Scheme = ssl_cipher:signature_scheme(Algo),
+    <<?UINT16(Scheme)>>.
+
+encode_signature(Signature) ->
+    Size = byte_size(Signature),
+    <<?UINT16(Size), Signature/binary>>.
+
+decode_cert_entries(Entries) ->
+    decode_cert_entries(Entries, []).
+
+decode_cert_entries(<<>>, Acc) ->
+    lists:reverse(Acc);
+decode_cert_entries(<<?UINT24(DSize), Data:DSize/binary, ?UINT16(Esize), BinExts:Esize/binary,
+                      Rest/binary>>, Acc) ->
+    Exts = decode_extensions(BinExts, certificate_request),
+    decode_cert_entries(Rest, [#certificate_entry{data = Data,
+                                                  extensions = Exts} | Acc]).
+
+encode_extensions(Exts)->
+    ssl_handshake:encode_extensions(extensions_list(Exts)).
+decode_extensions(Exts, MessageType) ->
+    ssl_handshake:decode_extensions(Exts, {3,4}, MessageType).
+
+extensions_list(HelloExtensions) ->
+    [Ext || {_, Ext} <- maps:to_list(HelloExtensions)].
+
+
+%% TODO: add extensions!
+chain_to_cert_list(L) ->
+    chain_to_cert_list(L, []).
+%%
+chain_to_cert_list([], Acc) ->
+    lists:reverse(Acc);
+chain_to_cert_list([H|T], Acc) ->
+    chain_to_cert_list(T, [certificate_entry(H)|Acc]).
+
+
+certificate_entry(DER) ->
+    #certificate_entry{
+       data = DER,
+       extensions = #{} %% Extensions not supported.
+      }.
+
+%% The digital signature is then computed over the concatenation of:
+%%   -  A string that consists of octet 32 (0x20) repeated 64 times
+%%   -  The context string
+%%   -  A single 0 byte which serves as the separator
+%%   -  The content to be signed
+%%
+%% For example, if the transcript hash was 32 bytes of 01 (this length
+%% would make sense for SHA-256), the content covered by the digital
+%% signature for a server CertificateVerify would be:
+%%
+%%    2020202020202020202020202020202020202020202020202020202020202020
+%%    2020202020202020202020202020202020202020202020202020202020202020
+%%    544c5320312e332c207365727665722043657274696669636174655665726966
+%%    79
+%%    00
+%%    0101010101010101010101010101010101010101010101010101010101010101
+sign(THash, Context, HashAlgo, PrivateKey) ->
+    Content = build_content(Context, THash),
+
+    %% The length of the Salt MUST be equal to the length of the output
+    %% of the digest algorithm: rsa_pss_saltlen = -1
+    try public_key:sign(Content, HashAlgo, PrivateKey,
+                    [{rsa_padding, rsa_pkcs1_pss_padding},
+                     {rsa_pss_saltlen, -1},
+                     {rsa_mgf1_md, HashAlgo}]) of
+        Signature ->
+            {ok, Signature}
+    catch
+        error:badarg ->
+            {error, badarg}
+    end.
+
+
+verify(THash, Context, HashAlgo, Signature, PublicKey) ->
+    Content = build_content(Context, THash),
+
+    %% The length of the Salt MUST be equal to the length of the output
+    %% of the digest algorithm: rsa_pss_saltlen = -1
+    try public_key:verify(Content, HashAlgo, Signature, PublicKey,
+                    [{rsa_padding, rsa_pkcs1_pss_padding},
+                     {rsa_pss_saltlen, -1},
+                     {rsa_mgf1_md, HashAlgo}]) of
+        Result ->
+            {ok, Result}
+    catch
+        error:badarg ->
+            {error, badarg}
+    end.
+
+
+build_content(Context, THash) ->
+    Prefix = binary:copy(<<32>>, 64),
+    <<Prefix/binary,Context/binary,?BYTE(0),THash/binary>>.
+
+
+%%====================================================================
+%% Handle handshake messages
+%%====================================================================
+
+
+do_start(#client_hello{cipher_suites = ClientCiphers,
+                       session_id = SessionId,
+                       extensions = Extensions} = _Hello,
+         #state{connection_states = _ConnectionStates0,
+                ssl_options = #ssl_options{ciphers = ServerCiphers,
+                                           signature_algs = ServerSignAlgs,
+                                           supported_groups = ServerGroups0},
+                session = #session{own_certificate = Cert}} = State0) ->
+
+    ClientGroups0 = maps:get(elliptic_curves, Extensions, undefined),
+    ClientGroups = get_supported_groups(ClientGroups0),
+    ServerGroups = get_supported_groups(ServerGroups0),
+
+    ClientShares0 = maps:get(key_share, Extensions, undefined),
+    ClientShares = get_key_shares(ClientShares0),
+
+    ClientSignAlgs = get_signature_scheme_list(
+                       maps:get(signature_algs, Extensions, undefined)),
+    ClientSignAlgsCert = get_signature_scheme_list(
+                           maps:get(signature_algs_cert, Extensions, undefined)),
+
+    %% TODO: use library function if it exists
+    %% Init the maybe "monad"
+    {Ref,Maybe} = maybe(),
+
+    try
+        %% If the server does not select a PSK, then the server independently selects a
+        %% cipher suite, an (EC)DHE group and key share for key establishment,
+        %% and a signature algorithm/certificate pair to authenticate itself to
+        %% the client.
+        Cipher = Maybe(select_cipher_suite(ClientCiphers, ServerCiphers)),
+        Groups = Maybe(select_common_groups(ServerGroups, ClientGroups)),
+        Maybe(validate_key_share(ClientGroups, ClientShares)),
+
+        {PublicKeyAlgo, SignAlgo, SignHash} = get_certificate_params(Cert),
+
+        %% Check if client supports signature algorithm of server certificate
+        Maybe(check_cert_sign_algo(SignAlgo, SignHash, ClientSignAlgs, ClientSignAlgsCert)),
+
+        %% Select signature algorithm (used in CertificateVerify message).
+        SelectedSignAlg = Maybe(select_sign_algo(PublicKeyAlgo, ClientSignAlgs, ServerSignAlgs)),
+
+        %% Select client public key. If no public key found in ClientShares or
+        %% ClientShares is empty, trigger HelloRetryRequest as we were able
+        %% to find an acceptable set of parameters but the ClientHello does not
+        %% contain sufficient information.
+        {Group, ClientPubKey} = get_client_public_key(Groups, ClientShares),
+
+        %% Generate server_share
+        KeyShare = ssl_cipher:generate_server_share(Group),
+
+        State1 = update_start_state(State0, Cipher, KeyShare, SessionId,
+                                    Group, SelectedSignAlg, ClientPubKey),
+
+        %% 4.1.4.  Hello Retry Request
+        %%
+        %% The server will send this message in response to a ClientHello
+        %% message if it is able to find an acceptable set of parameters but the
+        %% ClientHello does not contain sufficient information to proceed with
+        %% the handshake.
+        Maybe(send_hello_retry_request(State1, ClientPubKey, KeyShare, SessionId))
+
+        %% TODO:
+        %%   - session handling
+        %%   - handle extensions: ALPN
+        %%     (do not handle: NPN, srp, renegotiation_info, ec_point_formats)
+
+    catch
+        {Ref, {insufficient_security, no_suitable_groups}} ->
+            ?ALERT_REC(?FATAL, ?INSUFFICIENT_SECURITY, no_suitable_groups);
+        {Ref, illegal_parameter} ->
+            ?ALERT_REC(?FATAL, ?ILLEGAL_PARAMETER);
+        {Ref, no_suitable_cipher} ->
+            ?ALERT_REC(?FATAL, ?INSUFFICIENT_SECURITY, no_suitable_cipher);
+        {Ref, {insufficient_security, no_suitable_signature_algorithm}} ->
+            ?ALERT_REC(?FATAL, ?INSUFFICIENT_SECURITY, "No suitable signature algorithm");
+        {Ref, {insufficient_security, no_suitable_public_key}} ->
+            ?ALERT_REC(?FATAL, ?INSUFFICIENT_SECURITY, no_suitable_public_key)
+    end.
+
+
+do_negotiated(start_handshake,
+              #state{connection_states = ConnectionStates0,
+                     session = #session{session_id = SessionId,
+                                        own_certificate = OwnCert,
+                                        ecc = SelectedGroup,
+                                        sign_alg = SignatureScheme,
+                                        dh_public_value = ClientKey},
+                     ssl_options = #ssl_options{} = SslOpts,
+                     key_share = KeyShare,
+                     handshake_env = #handshake_env{tls_handshake_history = _HHistory0},
+                     connection_env = #connection_env{private_key = CertPrivateKey},
+                     static_env = #static_env{
+                                     cert_db = CertDbHandle,
+                                     cert_db_ref = CertDbRef,
+                                     socket = _Socket,
+                                     transport_cb = _Transport}
+                    } = State0) ->
+    {Ref,Maybe} = maybe(),
+
+    try
+        %% Create server_hello
+        %% Extensions: supported_versions, key_share, (pre_shared_key)
+        ServerHello = server_hello(server_hello, SessionId, KeyShare, ConnectionStates0),
+
+        {State1, _} = tls_connection:send_handshake(ServerHello, State0),
+
+        State2 =
+            calculate_handshake_secrets(ClientKey, SelectedGroup, KeyShare, State1),
+
+        State3 = ssl_record:step_encryption_state(State2),
+
+        %% Create EncryptedExtensions
+        EncryptedExtensions = encrypted_extensions(),
+
+        %% Encode EncryptedExtensions
+        State4 = tls_connection:queue_handshake(EncryptedExtensions, State3),
+
+        %% Create and send CertificateRequest ({verify, verify_peer})
+        {State5, NextState} = maybe_send_certificate_request(State4, SslOpts),
+
+        %% Create Certificate
+        Certificate = certificate(OwnCert, CertDbHandle, CertDbRef, <<>>, server),
+
+        %% Encode Certificate
+        State6 = tls_connection:queue_handshake(Certificate, State5),
+
+        %% Create CertificateVerify
+        CertificateVerify = Maybe(certificate_verify(CertPrivateKey, SignatureScheme,
+                                                     State6, server)),
+        %% Encode CertificateVerify
+        State7 = tls_connection:queue_handshake(CertificateVerify, State6),
+
+        %% Create Finished
+        Finished = finished(State7),
+
+        %% Encode Finished
+        State8 = tls_connection:queue_handshake(Finished, State7),
+
+        %% Send first flight
+        {State9, _} = tls_connection:send_handshake_flight(State8),
+
+        {State9, NextState}
+
+    catch
+        {Ref, badarg} ->
+            ?ALERT_REC(?FATAL, ?INTERNAL_ERROR, {digitally_sign, badarg})
+    end.
+
+
+do_wait_cert(#certificate_1_3{} = Certificate, State0) ->
+    {Ref,Maybe} = maybe(),
+    try
+        Maybe(process_client_certificate(Certificate, State0))
+    catch
+        {Ref, {certificate_required, State}} ->
+            {?ALERT_REC(?FATAL, ?CERTIFICATE_REQUIRED, certificate_required), State};
+        {Ref, {{certificate_unknown, Reason}, State}} ->
+            {?ALERT_REC(?FATAL, ?CERTIFICATE_UNKNOWN, Reason), State};
+        {Ref, {{internal_error, Reason}, State}} ->
+            {?ALERT_REC(?FATAL, ?INTERNAL_ERROR, Reason), State};
+        {Ref, {{handshake_failure, Reason}, State}} ->
+            {?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, Reason), State};
+        {#alert{} = Alert, State} ->
+            {Alert, State}
+    end.
+
+
+do_wait_cv(#certificate_verify_1_3{} = CertificateVerify, State0) ->
+    {Ref,Maybe} = maybe(),
+    try
+        Maybe(verify_signature_algorithm(State0, CertificateVerify)),
+        Maybe(verify_certificate_verify(State0, CertificateVerify))
+    catch
+        {Ref, {{bad_certificate, Reason}, State}} ->
+            {?ALERT_REC(?FATAL, ?BAD_CERTIFICATE, {bad_certificate, Reason}), State};
+        {Ref, {badarg, State}} ->
+            {?ALERT_REC(?FATAL, ?INTERNAL_ERROR, {verify, badarg}), State};
+        {Ref, {{handshake_failure, Reason}, State}} ->
+            {?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, {handshake_failure, Reason}), State}
+    end.
+
+
+do_wait_finished(#finished{verify_data = VerifyData},
+              #state{connection_states = _ConnectionStates0,
+                     session = #session{session_id = _SessionId,
+                                        own_certificate = _OwnCert},
+                     ssl_options = #ssl_options{} = _SslOpts,
+                     key_share = _KeyShare,
+                     handshake_env = #handshake_env{tls_handshake_history = _HHistory0},
+                     static_env = #static_env{
+                                     cert_db = _CertDbHandle,
+                                     cert_db_ref = _CertDbRef,
+                                     socket = _Socket,
+                                     transport_cb = _Transport}
+                    } = State0) ->
+
+    {Ref,Maybe} = maybe(),
+
+    try
+        Maybe(validate_client_finished(State0, VerifyData)),
+
+        State1 = calculate_traffic_secrets(State0),
+
+        %% Configure traffic keys
+        ssl_record:step_encryption_state(State1)
+
+
+    catch
+        {Ref, decrypt_error} ->
+            ?ALERT_REC(?FATAL, ?DECRYPT_ERROR, decrypt_error)
+    end.
+
+
+%% TODO: Remove this function!
+%% not_implemented(State, Reason) ->
+%%     {error, {not_implemented, State, Reason}}.
+%%
+%% not_implemented(update_secrets, State0, Reason) ->
+%%     State1 = calculate_traffic_secrets(State0),
+%%     State = ssl_record:step_encryption_state(State1),
+%%     {error, {not_implemented, State, Reason}}.
+
+
+
+%% Recipients of Finished messages MUST verify that the contents are
+%% correct and if incorrect MUST terminate the connection with a
+%% "decrypt_error" alert.
+validate_client_finished(#state{connection_states = ConnectionStates,
+                handshake_env =
+                    #handshake_env{
+                       tls_handshake_history = {Messages0, _}}}, VerifyData) ->
+    #{security_parameters := SecParamsR,
+     cipher_state := #cipher_state{finished_key = FinishedKey}} =
+        ssl_record:current_connection_state(ConnectionStates, read),
+    #security_parameters{prf_algorithm = HKDFAlgo} = SecParamsR,
+
+    %% Drop the client's finished message, it is not part of the handshake context
+    %% when the client calculates its finished message.
+    [_|Messages] = Messages0,
+
+    ControlData = tls_v1:finished_verify_data(FinishedKey, HKDFAlgo, Messages),
+    compare_verify_data(ControlData, VerifyData).
+
+
+compare_verify_data(Data, Data) ->
+    ok;
+compare_verify_data(_, _) ->
+    {error, decrypt_error}.
+
+
+send_hello_retry_request(#state{connection_states = ConnectionStates0} = State0,
+                         no_suitable_key, KeyShare, SessionId) ->
+    ServerHello = server_hello(hello_retry_request, SessionId, KeyShare, ConnectionStates0),
+    {State1, _} = tls_connection:send_handshake(ServerHello, State0),
+
+    %% TODO: Fix handshake history!
+    State2 = replace_ch1_with_message_hash(State1),
+
+    {ok, {State2, start}};
+send_hello_retry_request(State0, _, _, _) ->
+    %% Suitable key found.
+    {ok, {State0, negotiated}}.
+
+
+maybe_send_certificate_request(State, #ssl_options{verify = verify_none}) ->
+    {State, wait_finished};
+maybe_send_certificate_request(State, #ssl_options{
+                                         verify = verify_peer,
+                                         signature_algs = SignAlgs,
+                                         signature_algs_cert = SignAlgsCert}) ->
+    CertificateRequest = certificate_request(SignAlgs, SignAlgsCert),
+    {tls_connection:queue_handshake(CertificateRequest, State), wait_cert}.
+
+
+process_client_certificate(#certificate_1_3{
+                              certificate_request_context = <<>>,
+                              certificate_list = []},
+                           #state{ssl_options =
+                                      #ssl_options{
+                                         fail_if_no_peer_cert = false}} = State) ->
+    {ok, {State, wait_finished}};
+process_client_certificate(#certificate_1_3{
+                              certificate_request_context = <<>>,
+                              certificate_list = []},
+                           #state{ssl_options =
+                                      #ssl_options{
+                                         fail_if_no_peer_cert = true}} = State0) ->
+
+    %% At this point the client believes that the connection is up and starts using
+    %% its traffic secrets. In order to be able send an proper Alert to the client
+    %% the server should also change its connection state and use the traffic
+    %% secrets.
+    State1 = calculate_traffic_secrets(State0),
+    State = ssl_record:step_encryption_state(State1),
+    {error, {certificate_required, State}};
+process_client_certificate(#certificate_1_3{certificate_list = Certs0},
+                           #state{ssl_options =
+                                      #ssl_options{signature_algs = SignAlgs,
+                                                   signature_algs_cert = SignAlgsCert} = SslOptions,
+                                  static_env =
+                                      #static_env{
+                                         role = Role,
+                                         host = Host,
+                                         cert_db = CertDbHandle,
+                                         cert_db_ref = CertDbRef,
+                                         crl_db = CRLDbHandle}} = State0) ->
+    %% TODO: handle extensions!
+
+    %% Remove extensions from list of certificates!
+    Certs = convert_certificate_chain(Certs0),
+    case is_supported_signature_algorithm(Certs, SignAlgs, SignAlgsCert) of
+        true ->
+            case validate_certificate_chain(Certs, CertDbHandle, CertDbRef,
+                                            SslOptions, CRLDbHandle, Role, Host) of
+                {ok, {PeerCert, PublicKeyInfo}} ->
+                    State = store_peer_cert(State0, PeerCert, PublicKeyInfo),
+                    {ok, {State, wait_cv}};
+                {error, Reason} ->
+                    State1 = calculate_traffic_secrets(State0),
+                    State = ssl_record:step_encryption_state(State1),
+                    {error, {Reason, State}};
+                #alert{} = Alert ->
+                    State1 = calculate_traffic_secrets(State0),
+                    State = ssl_record:step_encryption_state(State1),
+                    {Alert, State}
+            end;
+        false ->
+            State1 = calculate_traffic_secrets(State0),
+            State = ssl_record:step_encryption_state(State1),
+            {error, {{handshake_failure,
+                      "Client certificate uses unsupported signature algorithm"}, State}}
+    end.
+
+
+%% TODO: check whole chain!
+is_supported_signature_algorithm(Certs, SignAlgs, undefined) ->
+    is_supported_signature_algorithm(Certs, SignAlgs);
+is_supported_signature_algorithm(Certs, _, SignAlgsCert) ->
+    is_supported_signature_algorithm(Certs, SignAlgsCert).
+%%
+is_supported_signature_algorithm([BinCert|_], SignAlgs0) ->
+    #'OTPCertificate'{signatureAlgorithm = SignAlg} =
+        public_key:pkix_decode_cert(BinCert, otp),
+    SignAlgs = filter_tls13_algs(SignAlgs0),
+    Scheme = ssl_cipher:signature_algorithm_to_scheme(SignAlg),
+    lists:member(Scheme, SignAlgs).
+
+
+validate_certificate_chain(Certs, CertDbHandle, CertDbRef, SslOptions, CRLDbHandle, Role, Host) ->
+    ServerName = ssl_handshake:server_name(SslOptions#ssl_options.server_name_indication, Host, Role),
+    [PeerCert | ChainCerts ] = Certs,
+    try
+	{TrustedCert, CertPath}  =
+	    ssl_certificate:trusted_cert_and_path(Certs, CertDbHandle, CertDbRef,
+                                                  SslOptions#ssl_options.partial_chain),
+        ValidationFunAndState =
+            ssl_handshake:validation_fun_and_state(SslOptions#ssl_options.verify_fun, Role,
+                                     CertDbHandle, CertDbRef, ServerName,
+                                     SslOptions#ssl_options.customize_hostname_check,
+                                     SslOptions#ssl_options.crl_check, CRLDbHandle, CertPath),
+        Options = [{max_path_length, SslOptions#ssl_options.depth},
+                   {verify_fun, ValidationFunAndState}],
+        %% TODO: Validate if Certificate is using a supported signature algorithm
+        %% (signature_algs_cert)!
+        case public_key:pkix_path_validation(TrustedCert, CertPath, Options) of
+            {ok, {PublicKeyInfo,_}} ->
+                {ok, {PeerCert, PublicKeyInfo}};
+            {error, Reason} ->
+                ssl_handshake:handle_path_validation_error(Reason, PeerCert, ChainCerts,
+                                                           SslOptions, Options,
+                                                           CertDbHandle, CertDbRef)
+        end
+    catch
+        error:{badmatch,{asn1, Asn1Reason}} ->
+            %% ASN-1 decode of certificate somehow failed
+            {error, {certificate_unknown, {failed_to_decode_certificate, Asn1Reason}}};
+        error:OtherReason ->
+            {error, {internal_error, {unexpected_error, OtherReason}}}
+    end.
+
+
+store_peer_cert(#state{session = Session,
+                       handshake_env = HsEnv} = State, PeerCert, PublicKeyInfo) ->
+    State#state{session = Session#session{peer_certificate = PeerCert},
+                handshake_env = HsEnv#handshake_env{public_key_info = PublicKeyInfo}}.
+
+
+convert_certificate_chain(Certs) ->
+    Fun = fun(#certificate_entry{data = Data}) ->
+                  {true, Data};
+             (_) ->
+                  false
+          end,
+    lists:filtermap(Fun, Certs).
+
+
+%% 4.4.1.  The Transcript Hash
+%%
+%% As an exception to this general rule, when the server responds to a
+%% ClientHello with a HelloRetryRequest, the value of ClientHello1 is
+%% replaced with a special synthetic handshake message of handshake type
+%% "message_hash" containing Hash(ClientHello1).  I.e.,
+%%
+%% Transcript-Hash(ClientHello1, HelloRetryRequest, ... Mn) =
+%%    Hash(message_hash ||        /* Handshake type */
+%%         00 00 Hash.length  ||  /* Handshake message length (bytes) */
+%%         Hash(ClientHello1) ||  /* Hash of ClientHello1 */
+%%         HelloRetryRequest  || ... || Mn)
+%%
+%% NOTE: Hash.length is used in practice (openssl) and not message length!
+%%       It is most probably a fault in the RFC.
+replace_ch1_with_message_hash(#state{connection_states = ConnectionStates,
+                                     handshake_env =
+                                         #handshake_env{
+                                            tls_handshake_history =
+                                                {[HRR,CH1|HHistory], LM}} = HSEnv}  = State0) ->
+    #{security_parameters := SecParamsR} =
+        ssl_record:pending_connection_state(ConnectionStates, read),
+    #security_parameters{prf_algorithm = HKDFAlgo} = SecParamsR,
+    MessageHash = message_hash(CH1, HKDFAlgo),
+    State0#state{handshake_env =
+                     HSEnv#handshake_env{
+                        tls_handshake_history =
+                            {[HRR,MessageHash|HHistory], LM}}}.
+
+
+message_hash(ClientHello1, HKDFAlgo) ->
+    [?MESSAGE_HASH,
+     0,0,ssl_cipher:hash_size(HKDFAlgo),
+     crypto:hash(HKDFAlgo, ClientHello1)].
+
+
+calculate_handshake_secrets(ClientKey, SelectedGroup, KeyShare,
+                              #state{connection_states = ConnectionStates,
+                                     handshake_env =
+                                         #handshake_env{
+                                            tls_handshake_history = HHistory}} = State0) ->
+    #{security_parameters := SecParamsR} =
+        ssl_record:pending_connection_state(ConnectionStates, read),
+    #security_parameters{prf_algorithm = HKDFAlgo,
+                         cipher_suite = CipherSuite} = SecParamsR,
+
+    %% Calculate handshake_secret
+    PSK = binary:copy(<<0>>, ssl_cipher:hash_size(HKDFAlgo)),
+    EarlySecret = tls_v1:key_schedule(early_secret, HKDFAlgo , {psk, PSK}),
+    PrivateKey = get_server_private_key(KeyShare),  %% #'ECPrivateKey'{}
+
+    IKM = calculate_shared_secret(ClientKey, PrivateKey, SelectedGroup),
+    HandshakeSecret = tls_v1:key_schedule(handshake_secret, HKDFAlgo, IKM, EarlySecret),
+
+    %% Calculate [sender]_handshake_traffic_secret
+    {Messages, _} =  HHistory,
+    ClientHSTrafficSecret =
+        tls_v1:client_handshake_traffic_secret(HKDFAlgo, HandshakeSecret, lists:reverse(Messages)),
+    ServerHSTrafficSecret =
+        tls_v1:server_handshake_traffic_secret(HKDFAlgo, HandshakeSecret, lists:reverse(Messages)),
+
+    %% Calculate traffic keys
+    #{cipher := Cipher} = ssl_cipher_format:suite_definition(CipherSuite),
+    {ReadKey, ReadIV} = tls_v1:calculate_traffic_keys(HKDFAlgo, Cipher, ClientHSTrafficSecret),
+    {WriteKey, WriteIV} = tls_v1:calculate_traffic_keys(HKDFAlgo, Cipher, ServerHSTrafficSecret),
+
+    %% Calculate Finished Keys
+    ReadFinishedKey = tls_v1:finished_key(ClientHSTrafficSecret, HKDFAlgo),
+    WriteFinishedKey = tls_v1:finished_key(ServerHSTrafficSecret, HKDFAlgo),
+
+    update_pending_connection_states(State0, HandshakeSecret,
+                                     ReadKey, ReadIV, ReadFinishedKey,
+                                     WriteKey, WriteIV, WriteFinishedKey).
+
+calculate_traffic_secrets(#state{connection_states = ConnectionStates,
+                                 handshake_env =
+                                     #handshake_env{
+                                        tls_handshake_history = HHistory}} = State0) ->
+    #{security_parameters := SecParamsR} =
+        ssl_record:pending_connection_state(ConnectionStates, read),
+    #security_parameters{prf_algorithm = HKDFAlgo,
+                         cipher_suite = CipherSuite,
+                         master_secret = HandshakeSecret} = SecParamsR,
+
+    MasterSecret =
+        tls_v1:key_schedule(master_secret, HKDFAlgo, HandshakeSecret),
+
+    %% Get the correct list messages for the handshake context.
+    Messages = get_handshake_context(HHistory),
+
+    %% Calculate [sender]_application_traffic_secret_0
+    ClientAppTrafficSecret0 =
+        tls_v1:client_application_traffic_secret_0(HKDFAlgo, MasterSecret, lists:reverse(Messages)),
+    ServerAppTrafficSecret0 =
+        tls_v1:server_application_traffic_secret_0(HKDFAlgo, MasterSecret, lists:reverse(Messages)),
+
+    %% Calculate traffic keys
+    #{cipher := Cipher} = ssl_cipher_format:suite_definition(CipherSuite),
+    {ReadKey, ReadIV} = tls_v1:calculate_traffic_keys(HKDFAlgo, Cipher, ClientAppTrafficSecret0),
+    {WriteKey, WriteIV} = tls_v1:calculate_traffic_keys(HKDFAlgo, Cipher, ServerAppTrafficSecret0),
+
+    update_pending_connection_states(State0, MasterSecret,
+                                     ReadKey, ReadIV, undefined,
+                                     WriteKey, WriteIV, undefined).
+
+
+get_server_private_key(#key_share_server_hello{server_share = ServerShare}) ->
+    get_private_key(ServerShare).
+
+get_private_key(#key_share_entry{
+                   key_exchange = #'ECPrivateKey'{} = PrivateKey}) ->
+    PrivateKey;
+get_private_key(#key_share_entry{
+                      key_exchange =
+                          {_, PrivateKey}}) ->
+    PrivateKey.
+
+%% TODO: implement EC keys
+get_public_key({?'rsaEncryption', PublicKey, _}) ->
+    PublicKey.
+
+
+%% X25519, X448
+calculate_shared_secret(OthersKey, MyKey, Group)
+  when is_binary(OthersKey) andalso is_binary(MyKey) andalso
+       (Group =:= x25519 orelse Group =:= x448)->
+    crypto:compute_key(ecdh, OthersKey, MyKey, Group);
+%% FFDHE
+calculate_shared_secret(OthersKey, MyKey, Group)
+  when is_binary(OthersKey) andalso is_binary(MyKey) ->
+    Params = #'DHParameter'{prime = P} = ssl_dh_groups:dh_params(Group),
+    S = public_key:compute_key(OthersKey, MyKey, Params),
+    Size = byte_size(binary:encode_unsigned(P)),
+    ssl_cipher:add_zero_padding(S, Size);
+%% ECDHE
+calculate_shared_secret(OthersKey, MyKey = #'ECPrivateKey'{}, _Group)
+  when is_binary(OthersKey) ->
+    Point = #'ECPoint'{point = OthersKey},
+    public_key:compute_key(Point, MyKey).
+
+
+update_pending_connection_states(#state{connection_states =
+                                            CS = #{pending_read := PendingRead0,
+                                                   pending_write := PendingWrite0}} = State,
+                                 HandshakeSecret,
+                                 ReadKey, ReadIV, ReadFinishedKey,
+                                 WriteKey, WriteIV, WriteFinishedKey) ->
+    PendingRead = update_connection_state(PendingRead0, HandshakeSecret,
+                                          ReadKey, ReadIV, ReadFinishedKey),
+    PendingWrite = update_connection_state(PendingWrite0, HandshakeSecret,
+                                           WriteKey, WriteIV, WriteFinishedKey),
+    State#state{connection_states = CS#{pending_read => PendingRead,
+                                        pending_write => PendingWrite}}.
+
+update_connection_state(ConnectionState = #{security_parameters := SecurityParameters0},
+                        HandshakeSecret, Key, IV, FinishedKey) ->
+    %% Store secret
+    SecurityParameters = SecurityParameters0#security_parameters{
+                           master_secret = HandshakeSecret},
+    ConnectionState#{security_parameters => SecurityParameters,
+                     cipher_state => cipher_init(Key, IV, FinishedKey)}.
+
+
+update_start_state(#state{connection_states = ConnectionStates0,
+                          connection_env = CEnv,
+                          session = Session} = State,
+                   Cipher, KeyShare, SessionId,
+                   Group, SelectedSignAlg, ClientPubKey) ->
+    #{security_parameters := SecParamsR0} = PendingRead =
+        maps:get(pending_read, ConnectionStates0),
+    #{security_parameters := SecParamsW0} = PendingWrite =
+        maps:get(pending_write, ConnectionStates0),
+    SecParamsR = ssl_cipher:security_parameters_1_3(SecParamsR0, Cipher),
+    SecParamsW = ssl_cipher:security_parameters_1_3(SecParamsW0, Cipher),
+    ConnectionStates =
+        ConnectionStates0#{pending_read => PendingRead#{security_parameters => SecParamsR},
+                           pending_write => PendingWrite#{security_parameters => SecParamsW}},
+    State#state{connection_states = ConnectionStates,
+                key_share = KeyShare,
+                session = Session#session{session_id = SessionId,
+                                          ecc = Group,
+                                          sign_alg = SelectedSignAlg,
+                                          dh_public_value = ClientPubKey,
+                                          cipher_suite = Cipher},
+                connection_env = CEnv#connection_env{negotiated_version = {3,4}}}.
+
+
+cipher_init(Key, IV, FinishedKey) ->
+    #cipher_state{key = Key,
+                  iv = IV,
+                  finished_key = FinishedKey,
+                  tag_len = 16}.
+
+
+%% Get handshake context for verification of CertificateVerify.
+%%
+%% Verify CertificateVerify:
+%%    ClientHello         (client) (1)
+%%    ServerHello         (server) (2)
+%%    EncryptedExtensions (server) (8)
+%%    CertificateRequest  (server) (13)
+%%    Certificate         (server) (11)
+%%    CertificateVerify   (server) (15)
+%%    Finished            (server) (20)
+%%    Certificate         (client) (11)
+%%    CertificateVerify   (client) (15) - Drop! Not included in calculations!
+get_handshake_context_cv({[<<15,_/binary>>|Messages], _}) ->
+    Messages.
+
+
+%% Get handshake context for traffic key calculation.
+%%
+%% Client is authenticated with certificate:
+%%    ClientHello         (client) (1)
+%%    ServerHello         (server) (2)
+%%    EncryptedExtensions (server) (8)
+%%    CertificateRequest  (server) (13)
+%%    Certificate         (server) (11)
+%%    CertificateVerify   (server) (15)
+%%    Finished            (server) (20)
+%%    Certificate         (client) (11) - Drop! Not included in calculations!
+%%    CertificateVerify   (client) (15) - Drop! Not included in calculations!
+%%    Finished            (client) (20) - Drop! Not included in calculations!
+%%
+%% Client is authenticated but sends empty certificate:
+%%    ClientHello         (client) (1)
+%%    ServerHello         (server) (2)
+%%    EncryptedExtensions (server) (8)
+%%    CertificateRequest  (server) (13)
+%%    Certificate         (server) (11)
+%%    CertificateVerify   (server) (15)
+%%    Finished            (server) (20)
+%%    Certificate         (client) (11) - Drop! Not included in calculations!
+%%    Finished            (client) (20) - Drop! Not included in calculations!
+%%
+%% Client is not authenticated:
+%%    ClientHello         (client) (1)
+%%    ServerHello         (server) (2)
+%%    EncryptedExtensions (server) (8)
+%%    Certificate         (server) (11)
+%%    CertificateVerify   (server) (15)
+%%    Finished            (server) (20)
+%%    Finished            (client) (20) - Drop! Not included in calculations!
+%%
+%% Drop all client messages from the front of the iolist using the property that
+%% incoming messages are binaries.
+get_handshake_context({Messages, _}) ->
+    get_handshake_context(Messages);
+get_handshake_context([H|T]) when is_binary(H) ->
+    get_handshake_context(T);
+get_handshake_context(L) ->
+    L.
+
+
+%% If sent by a client, the signature algorithm used in the signature
+%% MUST be one of those present in the supported_signature_algorithms
+%% field of the "signature_algorithms" extension in the
+%% CertificateRequest message.
+verify_signature_algorithm(#state{ssl_options =
+                                      #ssl_options{
+                                         signature_algs = ServerSignAlgs}} = State0,
+                           #certificate_verify_1_3{algorithm = ClientSignAlg}) ->
+    case lists:member(ClientSignAlg, ServerSignAlgs) of
+        true ->
+            ok;
+        false ->
+            State1 = calculate_traffic_secrets(State0),
+            State = ssl_record:step_encryption_state(State1),
+            {error, {{handshake_failure,
+                      "CertificateVerify uses unsupported signature algorithm"}, State}}
+    end.
+
+
+verify_certificate_verify(#state{connection_states = ConnectionStates,
+                                 handshake_env =
+                                     #handshake_env{
+                                        public_key_info = PublicKeyInfo,
+                                        tls_handshake_history = HHistory}} = State0,
+                          #certificate_verify_1_3{
+                             algorithm = SignatureScheme,
+                             signature = Signature}) ->
+    #{security_parameters := SecParamsR} =
+        ssl_record:pending_connection_state(ConnectionStates, write),
+    #security_parameters{prf_algorithm = HKDFAlgo} = SecParamsR,
+
+    {HashAlgo, _, _} =
+        ssl_cipher:scheme_to_components(SignatureScheme),
+
+    Messages = get_handshake_context_cv(HHistory),
+
+    Context = lists:reverse(Messages),
+
+    %% Transcript-Hash uses the HKDF hash function defined by the cipher suite.
+    THash = tls_v1:transcript_hash(Context, HKDFAlgo),
+
+    PublicKey = get_public_key(PublicKeyInfo),
+
+    %% Digital signatures use the hash function defined by the selected signature
+    %% scheme.
+    case verify(THash, <<"TLS 1.3, client CertificateVerify">>,
+                        HashAlgo, Signature, PublicKey) of
+        {ok, true} ->
+            {ok, {State0, wait_finished}};
+        {ok, false} ->
+            State1 = calculate_traffic_secrets(State0),
+            State = ssl_record:step_encryption_state(State1),
+            {error, {{handshake_failure, "Failed to verify CertificateVerify"}, State}};
+        {error, badarg} ->
+            State1 = calculate_traffic_secrets(State0),
+            State = ssl_record:step_encryption_state(State1),
+            {error, {badarg, State}}
+    end.
+
+
+%% If there is no overlap between the received
+%% "supported_groups" and the groups supported by the server, then the
+%% server MUST abort the handshake with a "handshake_failure" or an
+%% "insufficient_security" alert.
+select_common_groups(_, []) ->
+    {error, {insufficient_security, no_suitable_groups}};
+select_common_groups(ServerGroups, ClientGroups) ->
+    Fun = fun(E) -> lists:member(E, ClientGroups) end,
+    case lists:filter(Fun, ServerGroups) of
+        [] ->
+            {error, {insufficient_security, no_suitable_groups}};
+        L ->
+            {ok, L}
+    end.
+
+
+%% RFC 8446 - 4.2.8.  Key Share
+%% This vector MAY be empty if the client is requesting a
+%% HelloRetryRequest.  Each KeyShareEntry value MUST correspond to a
+%% group offered in the "supported_groups" extension and MUST appear in
+%% the same order.  However, the values MAY be a non-contiguous subset
+%% of the "supported_groups" extension and MAY omit the most preferred
+%% groups.
+%%
+%% Clients can offer as many KeyShareEntry values as the number of
+%% supported groups it is offering, each representing a single set of
+%% key exchange parameters.
+%%
+%% Clients MUST NOT offer multiple KeyShareEntry values
+%% for the same group.  Clients MUST NOT offer any KeyShareEntry values
+%% for groups not listed in the client's "supported_groups" extension.
+%% Servers MAY check for violations of these rules and abort the
+%% handshake with an "illegal_parameter" alert if one is violated.
+validate_key_share(_ ,[]) ->
+    ok;
+validate_key_share([], _) ->
+    {error, illegal_parameter};
+validate_key_share([G|ClientGroups], [{_, G, _}|ClientShares]) ->
+    validate_key_share(ClientGroups, ClientShares);
+validate_key_share([_|ClientGroups], [_|_] = ClientShares) ->
+    validate_key_share(ClientGroups, ClientShares).
+
+
+get_client_public_key([Group|_] = Groups, ClientShares) ->
+    get_client_public_key(Groups, ClientShares, Group).
+%%
+get_client_public_key(_, [], PreferredGroup) ->
+    {PreferredGroup, no_suitable_key};
+get_client_public_key([], _, PreferredGroup) ->
+    {PreferredGroup, no_suitable_key};
+get_client_public_key([Group|Groups], ClientShares, PreferredGroup) ->
+     case lists:keysearch(Group, 2, ClientShares) of
+         {value, {_, _, ClientPublicKey}} ->
+             {Group, ClientPublicKey};
+         false ->
+             get_client_public_key(Groups, ClientShares, PreferredGroup)
+     end.
+
+
+%% get_client_public_key(Group, ClientShares) ->
+%%      case lists:keysearch(Group, 2, ClientShares) of
+%%          {value, {_, _, ClientPublicKey}} ->
+%%              ClientPublicKey;
+%%          false ->
+%%              %% 4.1.4.  Hello Retry Request
+%%              %%
+%%              %% The server will send this message in response to a ClientHello
+%%              %% message if it is able to find an acceptable set of parameters but the
+%%              %% ClientHello does not contain sufficient information to proceed with
+%%              %% the handshake.
+%%              no_suitable_key
+%%      end.
+
+select_cipher_suite([], _) ->
+    {error, no_suitable_cipher};
+select_cipher_suite([Cipher|ClientCiphers], ServerCiphers) ->
+    case lists:member(Cipher, tls_v1:suites('TLS_v1.3')) andalso
+        lists:member(Cipher, ServerCiphers) of
+        true ->
+            {ok, Cipher};
+        false ->
+            select_cipher_suite(ClientCiphers, ServerCiphers)
+    end.
+
+%% RFC 8446 (TLS 1.3)
+%% TLS 1.3 provides two extensions for indicating which signature
+%% algorithms may be used in digital signatures.  The
+%% "signature_algorithms_cert" extension applies to signatures in
+%% certificates and the "signature_algorithms" extension, which
+%% originally appeared in TLS 1.2, applies to signatures in
+%% CertificateVerify messages.
+%%
+%% If no "signature_algorithms_cert" extension is
+%% present, then the "signature_algorithms" extension also applies to
+%% signatures appearing in certificates.
+
+%% Check if the signature algorithm of the server certificate is supported
+%% by the client.
+check_cert_sign_algo(SignAlgo, SignHash, ClientSignAlgs, undefined) ->
+    do_check_cert_sign_algo(SignAlgo, SignHash, ClientSignAlgs);
+check_cert_sign_algo(SignAlgo, SignHash, _, ClientSignAlgsCert) ->
+    do_check_cert_sign_algo(SignAlgo, SignHash, ClientSignAlgsCert).
+
+
+%% DSA keys are not supported by TLS 1.3
+select_sign_algo(dsa, _ClientSignAlgs, _ServerSignAlgs) ->
+    {error, {insufficient_security, no_suitable_public_key}};
+%% TODO: Implement support for ECDSA keys!
+select_sign_algo(_, [], _) ->
+    {error, {insufficient_security, no_suitable_signature_algorithm}};
+select_sign_algo(PublicKeyAlgo, [C|ClientSignAlgs], ServerSignAlgs) ->
+    {_, S, _} = ssl_cipher:scheme_to_components(C),
+    %% RSASSA-PKCS1-v1_5 and Legacy algorithms are not defined for use in signed
+    %% TLS handshake messages: filter sha-1 and rsa_pkcs1.
+    case ((PublicKeyAlgo =:= rsa andalso S =:= rsa_pss_rsae)
+          orelse (PublicKeyAlgo =:= rsa_pss andalso S =:= rsa_pss_rsae))
+        andalso
+        lists:member(C, ServerSignAlgs) of
+        true ->
+            {ok, C};
+        false ->
+            select_sign_algo(PublicKeyAlgo, ClientSignAlgs, ServerSignAlgs)
+    end.
+
+
+do_check_cert_sign_algo(_, _, []) ->
+    {error, {insufficient_security, no_suitable_signature_algorithm}};
+do_check_cert_sign_algo(SignAlgo, SignHash, [Scheme|T]) ->
+    {Hash, Sign, _Curve} = ssl_cipher:scheme_to_components(Scheme),
+    case compare_sign_algos(SignAlgo, SignHash, Sign, Hash) of
+        true ->
+            ok;
+        _Else ->
+            do_check_cert_sign_algo(SignAlgo, SignHash, T)
+    end.
+
+
+%% id-RSASSA-PSS (rsa_pss) indicates that the key may only be used for PSS signatures.
+%% TODO: Uncomment when rsa_pss signatures are supported in certificates
+%% compare_sign_algos(rsa_pss, Hash, Algo, Hash)
+%%   when Algo =:= rsa_pss_pss ->
+%%     true;
+%% rsaEncryption (rsa) allows the key to be used for any of the standard encryption or
+%% signature schemes.
+compare_sign_algos(rsa, Hash, Algo, Hash)
+  when Algo =:= rsa_pss_rsae orelse
+       Algo =:= rsa_pkcs1 ->
+    true;
+compare_sign_algos(Algo, Hash, Algo, Hash) ->
+    true;
+compare_sign_algos(_, _, _, _) ->
+    false.
+
+
+get_certificate_params(Cert) ->
+    {SignAlgo0, _Param, PublicKeyAlgo0} = ssl_handshake:get_cert_params(Cert),
+    {SignHash0, SignAlgo} = public_key:pkix_sign_types(SignAlgo0),
+    %% Convert hash to new format
+    SignHash = case SignHash0 of
+                   sha ->
+                       sha1;
+                   H -> H
+               end,
+    PublicKeyAlgo = public_key_algo(PublicKeyAlgo0),
+    {PublicKeyAlgo, SignAlgo, SignHash}.
+
+
+%% Note: copied from ssl_handshake
+public_key_algo(?'id-RSASSA-PSS') ->
+    rsa_pss;
+public_key_algo(?rsaEncryption) ->
+    rsa;
+public_key_algo(?'id-ecPublicKey') ->
+    ecdsa;
+public_key_algo(?'id-dsa') ->
+    dsa.
+
+get_signature_scheme_list(undefined) ->
+    undefined;
+get_signature_scheme_list(#signature_algorithms_cert{
+                        signature_scheme_list = ClientSignatureSchemes}) ->
+    ClientSignatureSchemes;
+get_signature_scheme_list(#signature_algorithms{
+                        signature_scheme_list = ClientSignatureSchemes}) ->
+    ClientSignatureSchemes.
+
+get_supported_groups(#supported_groups{supported_groups = Groups}) ->
+    Groups.
+
+get_key_shares(#key_share_client_hello{client_shares = ClientShares}) ->
+    ClientShares.
+
+maybe() ->
+    Ref = erlang:make_ref(),
+    Ok = fun(ok) -> ok;
+            ({ok,R}) -> R;
+            ({error,Reason}) ->
+                 throw({Ref,Reason})
+         end,
+    {Ref,Ok}.
diff --git a/lib/ssl/src/tls_handshake_1_3.hrl b/lib/ssl/src/tls_handshake_1_3.hrl
new file mode 100644
index 0000000000..7ae1b93e1c
--- /dev/null
+++ b/lib/ssl/src/tls_handshake_1_3.hrl
@@ -0,0 +1,238 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2018-2018. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+%%
+%%----------------------------------------------------------------------
+%% Purpose: Record and constant defenitions for the TLS-handshake protocol
+%% see RFC 8446. Also includes supported hello extensions.
+%%----------------------------------------------------------------------
+
+-ifndef(tls_handshake_1_3).
+-define(tls_handshake_1_3, true).
+
+%% Common to TLS-1.3 and previous TLS versions 
+%% Some defenitions may not exist in TLS-1.3 this is 
+%% handled elsewhere
+-include("tls_handshake.hrl"). 
+
+%% New handshake types in TLS-1.3 RFC 8446 B.3
+-define(NEW_SESSION_TICKET, 4).
+-define(END_OF_EARLY_DATA, 5).
+-define(ENCRYPTED_EXTENSIONS, 8).
+-define(KEY_UPDATE, 24).
+%% %% Not really a message but special way to handle handshake hashes
+%% %% when a "hello-retry-request" (special server_hello) is sent
+-define(MESSAGE_HASH, 254). 
+
+%% %%  RFC 8446 B.3.1.
+%% %% New extension types in TLS-1.3
+-define(PRE_SHARED_KEY_EXT, 41).
+-define(EARLY_DATA_EXT, 42).
+%%-define(SUPPORTED_VERSIONS_EXT, 43). %% Updates TLS 1.2 so defined in ssl_handshake.hrl
+-define(COOKIE_EXT, 44).
+-define(PSK_KEY_EXCHANGE_MODES_EXT, 45).
+-define(CERTIFICATE_AUTHORITIES_EXT, 47).
+-define(OID_FILTERS_EXT, 48).
+-define(POST_HANDSHAKE_AUTH_EXT, 49).
+%% -define(SIGNATURE_ALGORITHMS_CERT_EXT, 50). %% Updates TLS 1.2 so defined in ssl_handshake.hrl
+-define(KEY_SHARE_EXT, 51).
+
+%%  RFC 8446 B.3.1
+-record(key_share_entry, {
+          group,  %NamedGroup
+          key_exchange %key_exchange<1..2^16-1>;
+         }).
+-record(key_share_client_hello, {
+          client_shares   %% KeyShareEntry client_shares<0..2^16-1>;
+         }).
+-record(key_share_hello_retry_request, {
+          selected_group  %%  NamedGroup
+         }).
+-record(key_share_server_hello, {
+          server_share  %% KeyShareEntry server_share;
+         }).
+
+-record(uncompressed_point_representation, {
+          legacy_form = 4, %     uint8 legacy_form = 4;
+          x,               %     opaque X[coordinate_length];
+          y                %     opaque Y[coordinate_length];
+         }).
+
+-define(PSK_KE, 0).
+-define(PSK_DHE_KE, 1).
+
+-record(psk_keyexchange_modes, {
+          ke_modes % ke_modes<1..255>
+         }).
+-record(empty, {
+         }).
+-record(early_data_indication, {
+          indication % uint32 max_early_data_size (new_session_ticket) | 
+          %% #empty{} (client_hello, encrypted_extensions)
+         }).
+-record(psk_identity, {
+          identity, %     opaque identity<1..2^16-1>
+          obfuscated_ticket_age %  uint32
+         }).
+-record(offered_psks, {
+          psk_identity,    %identities<7..2^16-1>;
+          psk_binder_entry %binders<33..2^16-1>,  opaque PskBinderEntry<32..255>
+         }).
+-record(pre_shared_keyextension,{ 
+          extension %OfferedPsks (client_hello) | uint16 selected_identity (server_hello)
+         }).
+
+%% RFC 8446 B.3.1.2.
+-record(cookie, {
+          cookie %cookie<1..2^16-1>;
+         }).
+
+%%% RFC 8446 B.3.1.3.  Signature Algorithm Extension
+%% Signature Schemes
+%% RSASSA-PKCS1-v1_5 algorithms
+-define(RSA_PKCS1_SHA256, 16#0401).
+-define(RSA_PKCS1_SHA384, 16#0501).
+-define(RSA_PKCS1_SHA512, 16#0601).
+
+%% ECDSA algorithms 
+-define(ECDSA_SECP256R1_SHA256, 16#0403).
+-define(ECDSA_SECP384R1_SHA384, 16#0503).
+-define(ECDSA_SECP521R1_SHA512, 16#0603).
+
+%% RSASSA-PSS algorithms with public key OID rsaEncryption 
+-define(RSA_PSS_RSAE_SHA256, 16#0804).
+-define(RSA_PSS_RSAE_SHA384, 16#0805).
+-define(RSA_PSS_RSAE_SHA512, 16#0806).
+
+%% EdDSA algorithms 
+-define(ED25519, 16#0807).
+-define(ED448, 16#0808).
+
+%% RSASSA-PSS algorithms with public key OID RSASSA-PSS 
+-define(RSA_PSS_PSS_SHA256, 16#0809).
+-define(RSA_PSS_PSS_SHA384, 16#080a).
+-define(RSA_PSS_PSS_SHA512, 16#080b).
+
+%% Legacy algorithms
+-define(RSA_PKCS1_SHA1, 16#201).
+-define(ECDSA_SHA1, 16#0203).
+
+%%  RFC 8446 B.3.1.4.  Supported Groups Extension
+%% Elliptic Curve Groups (ECDHE)
+-define(SECP256R1, 16#0017). 
+-define(SECP384R1, 16#0018). 
+-define(SECP521R1, 16#0019).
+-define(X25519, 16#001D).
+-define(X448, 16#001E).
+
+%% RFC 8446 Finite Field Groups (DHE)
+-define(FFDHE2048, 16#0100).
+-define(FFDHE3072, 16#0101).
+-define(FFDHE4096, 16#0102). 
+-define(FFDHE6144, 16#0103).
+-define(FFDHE8192 ,16#0104).
+
+-record(named_group_list, {
+        named_group_list  %named_group_list<2..2^16-1>;
+         }).
+
+%%  RFC 8446 B.3.2 Server Parameters Messages
+%%  opaque DistinguishedName<1..2^16-1>;XS
+-record(certificate_authoritie_sextension, {
+          authorities  %DistinguishedName authorities<3..2^16-1>;
+         }).
+
+-record(oid_filter, {
+          certificate_extension_oid, % opaque certificate_extension_oid<1..2^8-1>;
+          certificate_extension_values % opaque certificate_extension_values<0..2^16-1>;
+         }).
+
+-record(oid_filter_extension, {
+          filters %OIDFilter filters<0..2^16-1>;
+         }).
+-record(post_handshake_auth, {
+         }).
+
+-record(encrypted_extensions, {
+          extensions  %extensions<0..2^16-1>;
+         }).
+
+-record(certificate_request_1_3, {
+          certificate_request_context, % opaque certificate_request_context<0..2^8-1>;
+          extensions %Extension extensions<2..2^16-1>;
+         }).
+
+%%  RFC 8446 B.3.3  Authentication Messages
+
+%% Certificate Type
+-define(X509, 0).
+-define(OpenPGP_RESERVED, 1).
+-define(RawPublicKey, 2).
+
+-record(certificate_entry, {
+          data,  
+          %% select (certificate_type) {
+          %%     case RawPublicKey:
+          %%       /* From RFC 7250 ASN.1_subjectPublicKeyInfo */
+          %%       opaque ASN1_subjectPublicKeyInfo<1..2^24-1>;
+          %%
+          %%     case X509:
+          %%       opaque cert_data<1..2^24-1>;
+          %% };
+          extensions %% Extension extensions<0..2^16-1>;
+         }).
+
+-record(certificate_1_3, {
+          certificate_request_context, % opaque certificate_request_context<0..2^8-1>;
+          certificate_list             % CertificateEntry certificate_list<0..2^24-1>;
+         }).
+
+-record(certificate_verify_1_3, {
+          algorithm, % SignatureScheme
+          signature  % signature<0..2^16-1>
+	 }).
+
+%% RFC 8446 B.3.4. Ticket Establishment
+-record(new_session_ticket, {
+          ticket_lifetime,  %unit32
+          ticket_age_add,   %unit32
+          ticket_nonce,     %opaque ticket_nonce<0..255>;
+          ticket,           %opaque ticket<1..2^16-1>
+          extensions        %extensions<0..2^16-2>
+         }).
+
+%%  RFC 8446 B.3.5. Updating Keys
+-record(end_of_early_data, {
+         }).
+
+-define(UPDATE_NOT_REQUESTED, 0).
+-define(UPDATE_REQUESTED, 1).
+
+-record(key_update, {
+          request_update
+         }).
+
+-type tls_handshake_1_3() :: #encrypted_extensions{} |
+                             #certificate_request_1_3{} |
+                             #certificate_1_3{} |
+                             #certificate_verify_1_3{}.
+
+-export_type([tls_handshake_1_3/0]).
+
+-endif. % -ifdef(tls_handshake_1_3).
diff --git a/lib/ssl/src/tls_record.erl b/lib/ssl/src/tls_record.erl
index cf0690f2a5..9f0c588cb6 100644
--- a/lib/ssl/src/tls_record.erl
+++ b/lib/ssl/src/tls_record.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2007-2018. All Rights Reserved.
+%% Copyright Ericsson AB 2007-2019. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -30,9 +30,10 @@
 -include("ssl_alert.hrl").
 -include("tls_handshake.hrl").
 -include("ssl_cipher.hrl").
+-include_lib("kernel/include/logger.hrl").
 
 %% Handling of incoming data
--export([get_tls_records/3, init_connection_states/2]).
+-export([get_tls_records/4, init_connection_states/2]).
 
 %% Encoding TLS records
 -export([encode_handshake/3, encode_alert_record/3,
@@ -40,13 +41,16 @@
 -export([encode_plain_text/4]).
 
 %% Decoding
--export([decode_cipher_text/3]).
+-export([decode_cipher_text/4]).
+
+%% Logging helper
+-export([build_tls_record/1]).
 
 %% Protocol version handling
 -export([protocol_version/1,  lowest_protocol_version/1, lowest_protocol_version/2,
 	 highest_protocol_version/1, highest_protocol_version/2,
 	 is_higher/2, supported_protocol_versions/0,
-	 is_acceptable_version/1, is_acceptable_version/2, hello_version/2]).
+	 is_acceptable_version/1, is_acceptable_version/2, hello_version/1]).
 
 -export_type([tls_version/0, tls_atom_version/0]).
 
@@ -75,25 +79,23 @@ init_connection_states(Role, BeastMitigation) ->
       pending_write => Pending}.
 
 %%--------------------------------------------------------------------
--spec get_tls_records(binary(), [tls_version()], binary()) -> {[binary()], binary()} | #alert{}.
+-spec get_tls_records(
+        binary(),
+        [tls_version()] | tls_version(),
+        Buffer0 :: binary() | {'undefined' | #ssl_tls{}, {[binary()],non_neg_integer(),[binary()]}},
+        #ssl_options{}) ->
+                             {Records :: [#ssl_tls{}],
+                              Buffer :: {'undefined' | #ssl_tls{}, {[binary()],non_neg_integer(),[binary()]}}} |
+                             #alert{}.
 %%			     
 %% and returns it as a list of tls_compressed binaries also returns leftover
 %% Description: Given old buffer and new data from TCP, packs up a records
 %% data
 %%--------------------------------------------------------------------
-get_tls_records(Data, Versions, Buffer) ->
-    BinData = list_to_binary([Buffer, Data]),
-    case erlang:byte_size(BinData) of
-        N when N >= 3 ->
-            case assert_version(BinData, Versions) of
-                true ->
-                    get_tls_records_aux(BinData, []);
-                false ->
-                    ?ALERT_REC(?FATAL, ?BAD_RECORD_MAC)
-            end;
-        _ ->
-            get_tls_records_aux(BinData, [])
-    end.
+get_tls_records(Data, Versions, Buffer, SslOpts) when is_binary(Buffer) ->
+    parse_tls_records(Versions, {[Data],byte_size(Data),[]}, SslOpts, undefined);
+get_tls_records(Data, Versions, {Hdr, {Front,Size,Rear}}, SslOpts) ->
+    parse_tls_records(Versions, {Front,Size + byte_size(Data),[Data|Rear]}, SslOpts, Hdr).
 
 %%====================================================================
 %% Encoding
@@ -105,6 +107,8 @@ get_tls_records(Data, Versions, Buffer) ->
 %
 %% Description: Encodes a handshake message to send on the ssl-socket.
 %%--------------------------------------------------------------------
+encode_handshake(Frag, {3, 4}, ConnectionStates) ->
+    tls_record_1_3:encode_handshake(Frag, ConnectionStates);
 encode_handshake(Frag, Version, 
 		 #{current_write :=
 		       #{beast_mitigation := BeastMitigation,
@@ -113,8 +117,8 @@ encode_handshake(Frag, Version,
 		     ConnectionStates) ->
     case iolist_size(Frag) of
 	N  when N > ?MAX_PLAIN_TEXT_LENGTH ->
-	    Data = split_bin(iolist_to_binary(Frag), Version, BCA, BeastMitigation),
-	    encode_iolist(?HANDSHAKE, Data, Version, ConnectionStates);
+	    Data = split_iovec(erlang:iolist_to_iovec(Frag), Version, BCA, BeastMitigation),
+	    encode_fragments(?HANDSHAKE, Version, Data, ConnectionStates);
 	_  ->
 	    encode_plain_text(?HANDSHAKE, Version, Frag, ConnectionStates)
     end.
@@ -125,6 +129,8 @@ encode_handshake(Frag, Version,
 %%
 %% Description: Encodes an alert message to send on the ssl-socket.
 %%--------------------------------------------------------------------
+encode_alert_record(Alert, {3, 4}, ConnectionStates) ->
+    tls_record_1_3:encode_alert_record(Alert, ConnectionStates);
 encode_alert_record(#alert{level = Level, description = Description},
                     Version, ConnectionStates) ->
     encode_plain_text(?ALERT, Version, <<?BYTE(Level), ?BYTE(Description)>>,
@@ -140,80 +146,86 @@ encode_change_cipher_spec(Version, ConnectionStates) ->
     encode_plain_text(?CHANGE_CIPHER_SPEC, Version, ?byte(?CHANGE_CIPHER_SPEC_PROTO), ConnectionStates).
 
 %%--------------------------------------------------------------------
--spec encode_data(binary(), tls_version(), ssl_record:connection_states()) ->
-			 {iolist(), ssl_record:connection_states()}.
+-spec encode_data([binary()], tls_version(), ssl_record:connection_states()) ->
+			 {[[binary()]], ssl_record:connection_states()}.
 %%
 %% Description: Encodes data to send on the ssl-socket.
 %%--------------------------------------------------------------------
-encode_data(Frag, Version,
+encode_data(Data, {3, 4}, ConnectionStates) ->
+    tls_record_1_3:encode_data(Data, ConnectionStates);
+encode_data(Data, Version,
 	    #{current_write := #{beast_mitigation := BeastMitigation,
 				 security_parameters :=
 				     #security_parameters{bulk_cipher_algorithm = BCA}}} =
 		ConnectionStates) ->
-    Data = split_bin(Frag, Version, BCA, BeastMitigation),
-    encode_iolist(?APPLICATION_DATA, Data, Version, ConnectionStates).
+    Fragments = split_iovec(Data, Version, BCA, BeastMitigation),
+    encode_fragments(?APPLICATION_DATA, Version, Fragments, ConnectionStates).
 
 %%====================================================================
 %% Decoding
 %%====================================================================
 
 %%--------------------------------------------------------------------
--spec decode_cipher_text(#ssl_tls{}, ssl_record:connection_states(), boolean()) ->
+-spec decode_cipher_text(tls_version(), #ssl_tls{}, ssl_record:connection_states(), boolean()) ->
 				{#ssl_tls{}, ssl_record:connection_states()}| #alert{}.
 %%
 %% Description: Decode cipher text
 %%--------------------------------------------------------------------
-decode_cipher_text(#ssl_tls{type = Type, version = Version,
-			    fragment = CipherFragment} = CipherText,
+decode_cipher_text({3,4}, CipherTextRecord, ConnectionStates, _) -> 
+    tls_record_1_3:decode_cipher_text(CipherTextRecord, ConnectionStates);
+decode_cipher_text(_, CipherTextRecord,
 		   #{current_read :=
-			 #{compression_state := CompressionS0,
-			   sequence_number := Seq,
-                           cipher_state := CipherS0,
+			 #{sequence_number := Seq,
 			   security_parameters :=
-			       #security_parameters{
-				  cipher_type = ?AEAD,
-                                  bulk_cipher_algorithm =
-                                      BulkCipherAlgo,
-				  compression_algorithm = CompAlg}
-			  } = ReadState0} = ConnnectionStates0, _) ->
-    AAD = start_additional_data(Type, Version, ReadState0),
-    CipherS1 = ssl_record:nonce_seed(BulkCipherAlgo, <<?UINT64(Seq)>>, CipherS0),
-    case ssl_record:decipher_aead(BulkCipherAlgo, CipherS1, AAD, CipherFragment, Version) of
-	{PlainFragment, CipherState} ->
-	    {Plain, CompressionS1} = ssl_record:uncompress(CompAlg,
-							   PlainFragment, CompressionS0),
-	    ConnnectionStates = ConnnectionStates0#{
+                               #security_parameters{cipher_type = ?AEAD,
+                                                    bulk_cipher_algorithm = BulkCipherAlgo},
+                           cipher_state := CipherS0
+                          }
+                    } = ConnectionStates0, _) ->
+    SeqBin = <<?UINT64(Seq)>>,
+    #ssl_tls{type = Type, version = {MajVer,MinVer} = Version, fragment = Fragment} = CipherTextRecord,
+    StartAdditionalData = <<SeqBin/binary, ?BYTE(Type), ?BYTE(MajVer), ?BYTE(MinVer)>>,
+    CipherS = ssl_record:nonce_seed(BulkCipherAlgo, SeqBin, CipherS0),
+    case ssl_record:decipher_aead(
+           BulkCipherAlgo, CipherS, StartAdditionalData, Fragment, Version)
+    of
+	PlainFragment when is_binary(PlainFragment) ->
+            #{current_read :=
+                  #{security_parameters := SecParams,
+                    compression_state := CompressionS0} = ReadState0} = ConnectionStates0,
+	    {Plain, CompressionS} = ssl_record:uncompress(SecParams#security_parameters.compression_algorithm,
+                                                          PlainFragment, CompressionS0),
+	    ConnectionStates = ConnectionStates0#{
 				  current_read => ReadState0#{
-                                                    cipher_state => CipherState,
+                                                    cipher_state => CipherS,
                                                     sequence_number => Seq + 1,
-                                                    compression_state => CompressionS1}},
-	    {CipherText#ssl_tls{fragment = Plain}, ConnnectionStates};
+                                                    compression_state => CompressionS}},
+	    {CipherTextRecord#ssl_tls{fragment = Plain}, ConnectionStates};
 	#alert{} = Alert ->
 	    Alert
     end;
 
-decode_cipher_text(#ssl_tls{type = Type, version = Version,
-			    fragment = CipherFragment} = CipherText,
-		   #{current_read :=
-			 #{compression_state := CompressionS0,
-			   sequence_number := Seq,
-			   security_parameters :=
-			       #security_parameters{compression_algorithm = CompAlg}
-			  } = ReadState0} = ConnnectionStates0, PaddingCheck) ->
+decode_cipher_text(_, #ssl_tls{version = Version,
+                               fragment = CipherFragment} = CipherTextRecord,
+		   #{current_read := ReadState0} = ConnnectionStates0, PaddingCheck) ->
     case ssl_record:decipher(Version, CipherFragment, ReadState0, PaddingCheck) of
 	{PlainFragment, Mac, ReadState1} ->
-	    MacHash = ssl_cipher:calc_mac_hash(Type, Version, PlainFragment, ReadState1),
+	    MacHash = ssl_cipher:calc_mac_hash(CipherTextRecord#ssl_tls.type, Version, PlainFragment, ReadState1),
 	    case ssl_record:is_correct_mac(Mac, MacHash) of
 		true ->
+                    #{sequence_number := Seq,
+                      compression_state := CompressionS0,
+                      security_parameters :=
+                          #security_parameters{compression_algorithm = CompAlg}} = ReadState0,
 		    {Plain, CompressionS1} = ssl_record:uncompress(CompAlg,
 								   PlainFragment, CompressionS0),
-		    ConnnectionStates = ConnnectionStates0#{
-					  current_read => ReadState1#{
-							    sequence_number => Seq + 1,
-							    compression_state => CompressionS1}},
-		    {CipherText#ssl_tls{fragment = Plain}, ConnnectionStates};
+		    ConnnectionStates =
+                        ConnnectionStates0#{current_read =>
+                                                ReadState1#{sequence_number => Seq + 1,
+                                                            compression_state => CompressionS1}},
+		    {CipherTextRecord#ssl_tls{fragment = Plain}, ConnnectionStates};
 		false ->
-			?ALERT_REC(?FATAL, ?BAD_RECORD_MAC)
+                    ?ALERT_REC(?FATAL, ?BAD_RECORD_MAC)
 	    end;
 	    #alert{} = Alert ->
 	    Alert
@@ -230,6 +242,8 @@ decode_cipher_text(#ssl_tls{type = Type, version = Version,
 %% Description: Creates a protocol version record from a version atom
 %% or vice versa.
 %%--------------------------------------------------------------------
+protocol_version('tlsv1.3') ->
+    {3, 4};
 protocol_version('tlsv1.2') ->
     {3, 3};
 protocol_version('tlsv1.1') ->
@@ -240,6 +254,8 @@ protocol_version(sslv3) ->
     {3, 0};
 protocol_version(sslv2) -> %% Backwards compatibility
     {2, 0};
+protocol_version({3, 4}) ->
+    'tlsv1.3';
 protocol_version({3, 3}) ->
     'tlsv1.2';
 protocol_version({3, 2}) ->
@@ -373,10 +389,10 @@ is_acceptable_version({N,_} = Version, Versions)
 is_acceptable_version(_,_) ->
     false.
 
--spec hello_version(tls_version(), [tls_version()]) -> tls_version().
-hello_version(Version, _) when Version >= {3, 3} ->
-    Version;
-hello_version(_, Versions) ->
+-spec hello_version([tls_version()]) -> tls_version().
+hello_version([Highest|_]) when Highest >= {3,3} ->
+    Highest;
+hello_version(Versions) ->
     lowest_protocol_version(Versions).
 
 %%--------------------------------------------------------------------
@@ -395,117 +411,230 @@ initial_connection_state(ConnectionEnd, BeastMitigation) ->
       server_verify_data => undefined
      }.
 
-assert_version(<<?BYTE(_), ?BYTE(MajVer), ?BYTE(MinVer), _/binary>>, Versions) ->
-    is_acceptable_version({MajVer, MinVer}, Versions).
-                   
-get_tls_records_aux(<<?BYTE(?APPLICATION_DATA),?BYTE(MajVer),?BYTE(MinVer),
-		     ?UINT16(Length), Data:Length/binary, Rest/binary>>, 
-		    Acc) ->
-    get_tls_records_aux(Rest, [#ssl_tls{type = ?APPLICATION_DATA,
-					version = {MajVer, MinVer},
-					fragment = Data} | Acc]);
-get_tls_records_aux(<<?BYTE(?HANDSHAKE),?BYTE(MajVer),?BYTE(MinVer),
-		     ?UINT16(Length), 
-		     Data:Length/binary, Rest/binary>>, Acc) ->
-    get_tls_records_aux(Rest, [#ssl_tls{type = ?HANDSHAKE,
-					version = {MajVer, MinVer},
-					fragment = Data} | Acc]);
-get_tls_records_aux(<<?BYTE(?ALERT),?BYTE(MajVer),?BYTE(MinVer),
-		     ?UINT16(Length), Data:Length/binary, 
-		     Rest/binary>>, Acc) ->
-    get_tls_records_aux(Rest, [#ssl_tls{type = ?ALERT,
-					version = {MajVer, MinVer},
-					fragment = Data} | Acc]);
-get_tls_records_aux(<<?BYTE(?CHANGE_CIPHER_SPEC),?BYTE(MajVer),?BYTE(MinVer),
-		     ?UINT16(Length), Data:Length/binary, Rest/binary>>, 
-		    Acc) ->
-    get_tls_records_aux(Rest, [#ssl_tls{type = ?CHANGE_CIPHER_SPEC,
-					version = {MajVer, MinVer},
-					fragment = Data} | Acc]);
-get_tls_records_aux(<<0:1, _CT:7, ?BYTE(_MajVer), ?BYTE(_MinVer),
-                      ?UINT16(Length), _/binary>>,
-                    _Acc) when Length > ?MAX_CIPHER_TEXT_LENGTH ->
-    ?ALERT_REC(?FATAL, ?RECORD_OVERFLOW);
-get_tls_records_aux(Data, Acc) ->
-    case size(Data) =< ?MAX_CIPHER_TEXT_LENGTH + ?INITIAL_BYTES of
-	true ->
-	    {lists:reverse(Acc), Data};
-	false ->
-	    ?ALERT_REC(?FATAL, ?UNEXPECTED_MESSAGE)
-	end.
-%%--------------------------------------------------------------------
-encode_plain_text(Type, Version, Data, #{current_write := Write0} = ConnectionStates) ->
-    {CipherFragment, Write1} = do_encode_plain_text(Type, Version, Data, Write0),
-    {CipherText, Write} = encode_tls_cipher_text(Type, Version, CipherFragment, Write1),
-    {CipherText, ConnectionStates#{current_write => Write}}.
-
-encode_tls_cipher_text(Type, {MajVer, MinVer}, Fragment, #{sequence_number := Seq} = Write) ->
-    Length = erlang:iolist_size(Fragment),
-    {[<<?BYTE(Type), ?BYTE(MajVer), ?BYTE(MinVer), ?UINT16(Length)>>, Fragment],
-     Write#{sequence_number => Seq +1}}.
-
-encode_iolist(Type, Data, Version, ConnectionStates0) ->
-    {ConnectionStates, EncodedMsg} =
-        lists:foldl(fun(Text, {CS0, Encoded}) ->
-			    {Enc, CS1} =
-				encode_plain_text(Type, Version, Text, CS0),
-			    {CS1, [Enc | Encoded]}
-		    end, {ConnectionStates0, []}, Data),
-    {lists:reverse(EncodedMsg), ConnectionStates}.
-%%--------------------------------------------------------------------
-do_encode_plain_text(Type, Version, Data, #{compression_state := CompS0,
-                                            cipher_state := CipherS0,
-                                            sequence_number := Seq,
-                                            security_parameters :=
-					     #security_parameters{
-						cipher_type = ?AEAD,
-                                                bulk_cipher_algorithm = BCAlg,
-						compression_algorithm = CompAlg}
-					} = WriteState0) ->
-    {Comp, CompS1} = ssl_record:compress(CompAlg, Data, CompS0),
-    CipherS = ssl_record:nonce_seed(BCAlg, <<?UINT64(Seq)>>, CipherS0),
-    WriteState = WriteState0#{compression_state => CompS1,
-                              cipher_state => CipherS},
-    AAD = start_additional_data(Type, Version, WriteState),
-    ssl_record:cipher_aead(Version, Comp, WriteState, AAD);
-do_encode_plain_text(Type, Version, Data, #{compression_state := CompS0,
-					 security_parameters :=
-					     #security_parameters{compression_algorithm = CompAlg}
-					}= WriteState0) ->
-    {Comp, CompS1} = ssl_record:compress(CompAlg, Data, CompS0),
-    WriteState1 = WriteState0#{compression_state => CompS1},
-    MacHash = ssl_cipher:calc_mac_hash(Type, Version, Comp, WriteState1),
-    ssl_record:cipher(Version, Comp, WriteState1, MacHash);
-do_encode_plain_text(_,_,_,CS) ->
+%% Used by logging to recreate the received bytes
+build_tls_record(#ssl_tls{type = Type, version = {MajVer, MinVer}, fragment = Fragment}) ->
+    Length = byte_size(Fragment),
+    <<?BYTE(Type),?BYTE(MajVer),?BYTE(MinVer),?UINT16(Length), Fragment/binary>>.
+
+
+parse_tls_records(Versions, Q, SslOpts, undefined) ->
+    decode_tls_records(Versions, Q, SslOpts, [], undefined, undefined, undefined);
+parse_tls_records(Versions, Q, SslOpts, #ssl_tls{type = Type, version = Version, fragment = Length}) ->
+    decode_tls_records(Versions, Q, SslOpts, [], Type, Version, Length).
+
+%% Generic code path
+decode_tls_records(Versions, {_,Size,_} = Q0, SslOpts, Acc, undefined, _Version, _Length) ->
+    if
+        5 =< Size ->
+            {<<?BYTE(Type),?BYTE(MajVer),?BYTE(MinVer), ?UINT16(Length)>>, Q} = binary_from_front(5, Q0),
+            validate_tls_records_type(Versions, Q, SslOpts, Acc, Type, {MajVer,MinVer}, Length);
+        3 =< Size ->
+            {<<?BYTE(Type),?BYTE(MajVer),?BYTE(MinVer)>>, Q} = binary_from_front(3, Q0),
+            validate_tls_records_type(Versions, Q, SslOpts, Acc, Type, {MajVer,MinVer}, undefined);
+        1 =< Size ->
+            {<<?BYTE(Type)>>, Q} = binary_from_front(1, Q0),
+            validate_tls_records_type(Versions, Q, SslOpts, Acc, Type, undefined, undefined);
+        true ->
+            validate_tls_records_type(Versions, Q0, SslOpts, Acc, undefined, undefined, undefined)
+    end;
+decode_tls_records(Versions, {_,Size,_} = Q0, SslOpts, Acc, Type, undefined, _Length) ->
+    if
+        4 =< Size ->
+            {<<?BYTE(MajVer),?BYTE(MinVer), ?UINT16(Length)>>, Q} = binary_from_front(4, Q0),
+            validate_tls_record_version(Versions, Q, SslOpts, Acc, Type, {MajVer,MinVer}, Length);
+        2 =< Size ->
+            {<<?BYTE(MajVer),?BYTE(MinVer)>>, Q} = binary_from_front(2, Q0),
+            validate_tls_record_version(Versions, Q, SslOpts, Acc, Type, {MajVer,MinVer}, undefined);
+        true ->
+            validate_tls_record_version(Versions, Q0, SslOpts, Acc, Type, undefined, undefined)
+    end;
+decode_tls_records(Versions, {_,Size,_} = Q0, SslOpts, Acc, Type, Version, undefined) ->
+    if
+        2 =< Size ->
+            {<<?UINT16(Length)>>, Q} = binary_from_front(2, Q0),
+            validate_tls_record_length(Versions, Q, SslOpts, Acc, Type, Version, Length);
+        true ->
+            validate_tls_record_length(Versions, Q0, SslOpts, Acc, Type, Version, undefined)
+    end;
+decode_tls_records(Versions, Q, SslOpts, Acc, Type, Version, Length) ->
+    validate_tls_record_length(Versions, Q, SslOpts, Acc, Type, Version, Length).
+
+validate_tls_records_type(_Versions, Q, _SslOpts, Acc, undefined, _Version, _Length) ->
+    {lists:reverse(Acc),
+     {undefined, Q}};
+validate_tls_records_type(Versions, Q, SslOpts, Acc, Type, Version, Length) ->
+    if
+        ?KNOWN_RECORD_TYPE(Type) ->
+            validate_tls_record_version(Versions, Q, SslOpts, Acc, Type, Version, Length);
+        true ->
+            %% Not ?KNOWN_RECORD_TYPE(Type)
+            ?ALERT_REC(?FATAL, ?UNEXPECTED_MESSAGE)
+    end.
+
+validate_tls_record_version(_Versions, Q, _SslOpts, Acc, Type, undefined, _Length) ->
+    {lists:reverse(Acc),
+     {#ssl_tls{type = Type, version = undefined, fragment = undefined}, Q}};
+validate_tls_record_version(Versions, Q, SslOpts, Acc, Type, Version, Length) ->
+    case Versions of
+        _ when is_list(Versions) ->
+            case is_acceptable_version(Version, Versions) of
+                true ->
+                    validate_tls_record_length(Versions, Q, SslOpts, Acc, Type, Version, Length);
+                false ->
+                    ?ALERT_REC(?FATAL, ?BAD_RECORD_MAC)
+            end;
+        {3, 4} when Version =:= {3, 3} ->
+            validate_tls_record_length(Versions, Q, SslOpts, Acc, Type, Version, Length);
+        Version ->
+            %% Exact version match
+            validate_tls_record_length(Versions, Q, SslOpts, Acc, Type, Version, Length);
+        _ ->
+            ?ALERT_REC(?FATAL, ?BAD_RECORD_MAC)
+    end.
+
+validate_tls_record_length(_Versions, Q, _SslOpts, Acc, Type, Version, undefined) ->
+    {lists:reverse(Acc),
+     {#ssl_tls{type = Type, version = Version, fragment = undefined}, Q}};
+validate_tls_record_length(Versions, {_,Size0,_} = Q0, SslOpts, Acc, Type, Version, Length) ->
+    if
+        Length =< ?MAX_CIPHER_TEXT_LENGTH ->
+            if
+                Length =< Size0 ->
+                    %% Complete record
+                    {Fragment, Q} = binary_from_front(Length, Q0),
+                    Record = #ssl_tls{type = Type, version = Version, fragment = Fragment},
+                    ssl_logger:debug(SslOpts#ssl_options.log_level, inbound, 'record', Record),
+                    decode_tls_records(Versions, Q, SslOpts, [Record|Acc], undefined, undefined, undefined);
+                true ->
+                    {lists:reverse(Acc),
+                     {#ssl_tls{type = Type, version = Version, fragment = Length}, Q0}}
+            end;
+        true ->
+            ?ALERT_REC(?FATAL, ?RECORD_OVERFLOW)
+    end.
+
+
+binary_from_front(SplitSize, {Front,Size,Rear}) ->
+    binary_from_front(SplitSize, Front, Size, Rear, []).
+%%
+binary_from_front(SplitSize, [], Size, [_] = Rear, Acc) ->
+    %% Optimize a simple case
+    binary_from_front(SplitSize, Rear, Size, [], Acc);
+binary_from_front(SplitSize, [], Size, Rear, Acc) ->
+    binary_from_front(SplitSize, lists:reverse(Rear), Size, [], Acc);
+binary_from_front(SplitSize, [Bin|Front], Size, Rear, []) ->
+    %% Optimize a frequent case
+    BinSize = byte_size(Bin),
+    if
+        SplitSize < BinSize ->
+            {RetBin, Rest} = erlang:split_binary(Bin, SplitSize),
+            {RetBin, {[Rest|Front],Size - SplitSize,Rear}};
+        BinSize < SplitSize ->
+            binary_from_front(SplitSize - BinSize, Front, Size, Rear, [Bin]);
+        true -> % Perfect fit
+            {Bin, {Front,Size - SplitSize,Rear}}
+    end;
+binary_from_front(SplitSize, [Bin|Front], Size, Rear, Acc) ->
+    BinSize = byte_size(Bin),
+    if
+        SplitSize < BinSize ->
+            {Last, Rest} = erlang:split_binary(Bin, SplitSize),
+            RetBin = iolist_to_binary(lists:reverse(Acc, [Last])),
+            {RetBin, {[Rest|Front],Size - byte_size(RetBin),Rear}};
+        BinSize < SplitSize ->
+            binary_from_front(SplitSize - BinSize, Front, Size, Rear, [Bin|Acc]);
+        true -> % Perfect fit
+            RetBin = iolist_to_binary(lists:reverse(Acc, [Bin])),
+            {RetBin, {Front,Size - byte_size(RetBin),Rear}}
+    end.
+
+%%--------------------------------------------------------------------
+encode_plain_text(Type, Version, Data, ConnectionStates0) ->
+    {[CipherText],ConnectionStates} = encode_fragments(Type, Version, [Data], ConnectionStates0),
+    {CipherText,ConnectionStates}.
+%%--------------------------------------------------------------------
+encode_fragments(Type, Version, Data,
+              #{current_write := #{compression_state := CompS,
+                                   cipher_state := CipherS,
+                                   sequence_number := Seq}} = ConnectionStates) ->
+    encode_fragments(Type, Version, Data, ConnectionStates, CompS, CipherS, Seq, []).
+%%
+encode_fragments(_Type, _Version, [], #{current_write := WriteS} = CS,
+              CompS, CipherS, Seq, CipherFragments) ->
+    {lists:reverse(CipherFragments),
+     CS#{current_write := WriteS#{compression_state := CompS,
+                                  cipher_state := CipherS,
+                                  sequence_number := Seq}}};
+encode_fragments(Type, Version, [Text|Data],
+              #{current_write := #{security_parameters :=
+                                       #security_parameters{cipher_type = ?AEAD,
+                                                            bulk_cipher_algorithm = BCAlg,
+                                                            compression_algorithm = CompAlg} = SecPars}} = CS,
+              CompS0, CipherS0, Seq, CipherFragments) ->
+    {CompText, CompS} = ssl_record:compress(CompAlg, Text, CompS0),
+    SeqBin = <<?UINT64(Seq)>>,
+    CipherS1 = ssl_record:nonce_seed(BCAlg, SeqBin, CipherS0),
+    {MajVer, MinVer} = Version,
+    VersionBin = <<?BYTE(MajVer), ?BYTE(MinVer)>>,
+    StartAdditionalData = <<SeqBin/binary, ?BYTE(Type), VersionBin/binary>>,
+    {CipherFragment,CipherS} = ssl_record:cipher_aead(Version, CompText, CipherS1, StartAdditionalData, SecPars),
+    Length = byte_size(CipherFragment),
+    CipherHeader = <<?BYTE(Type), VersionBin/binary, ?UINT16(Length)>>,
+    encode_fragments(Type, Version, Data, CS, CompS, CipherS, Seq + 1,
+                  [[CipherHeader, CipherFragment] | CipherFragments]);
+encode_fragments(Type, Version, [Text|Data],
+              #{current_write := #{security_parameters :=
+                                       #security_parameters{compression_algorithm = CompAlg,
+                                                            mac_algorithm = MacAlgorithm} = SecPars,
+                                   mac_secret := MacSecret}} = CS,
+              CompS0, CipherS0, Seq, CipherFragments) ->
+    {CompText, CompS} = ssl_record:compress(CompAlg, Text, CompS0),
+    MacHash = ssl_cipher:calc_mac_hash(Type, Version, CompText, MacAlgorithm, MacSecret, Seq),
+    {CipherFragment,CipherS} = ssl_record:cipher(Version, CompText, CipherS0, MacHash, SecPars),
+    Length = byte_size(CipherFragment),
+    {MajVer, MinVer} = Version,
+    CipherHeader = <<?BYTE(Type), ?BYTE(MajVer), ?BYTE(MinVer), ?UINT16(Length)>>,
+    encode_fragments(Type, Version, Data, CS, CompS, CipherS, Seq + 1,
+                  [[CipherHeader, CipherFragment] | CipherFragments]);
+encode_fragments(_Type, _Version, _Data, CS, _CompS, _CipherS, _Seq, _CipherFragments) ->
     exit({cs, CS}).
 %%--------------------------------------------------------------------
-start_additional_data(Type, {MajVer, MinVer},
-	 #{sequence_number := SeqNo}) ->
-    <<?UINT64(SeqNo), ?BYTE(Type), ?BYTE(MajVer), ?BYTE(MinVer)>>.
 
 %% 1/n-1 splitting countermeasure Rizzo/Duong-Beast, RC4 chiphers are
 %% not vulnerable to this attack.
-split_bin(<<FirstByte:8, Rest/binary>>, Version, BCA, one_n_minus_one) when
-      BCA =/= ?RC4 andalso ({3, 1} == Version orelse
-			    {3, 0} == Version) ->
-    [[FirstByte]|do_split_bin(Rest)];
+split_iovec([<<FirstByte:8, Rest/binary>>|Data], Version, BCA, one_n_minus_one)
+  when (BCA =/= ?RC4) andalso ({3, 1} == Version orelse
+                               {3, 0} == Version) ->
+    [[FirstByte]|split_iovec([Rest|Data])];
 %% 0/n splitting countermeasure for clients that are incompatible with 1/n-1
 %% splitting.
-split_bin(Bin, Version, BCA, zero_n) when
-      BCA =/= ?RC4 andalso ({3, 1} == Version orelse
-			    {3, 0} == Version) ->
-    [<<>>|do_split_bin(Bin)];
-split_bin(Bin, _, _, _) ->
-    do_split_bin(Bin).
-
-do_split_bin(<<>>) -> [];
-do_split_bin(Bin) ->
-    case Bin of
-        <<Chunk:?MAX_PLAIN_TEXT_LENGTH/binary, Rest/binary>> ->
-            [Chunk|do_split_bin(Rest)];
-        _ ->
-            [Bin]
-    end.
+split_iovec(Data, Version, BCA, zero_n)
+  when (BCA =/= ?RC4) andalso ({3, 1} == Version orelse
+                               {3, 0} == Version) ->
+    [<<>>|split_iovec(Data)];
+split_iovec(Data, _Version, _BCA, _BeatMitigation) ->
+    split_iovec(Data).
+
+split_iovec([]) ->
+    [];
+split_iovec(Data) ->
+    {Part,Rest} = split_iovec(Data, ?MAX_PLAIN_TEXT_LENGTH, []),
+    [Part|split_iovec(Rest)].
+%%
+split_iovec([Bin|Data], SplitSize, Acc) ->
+    BinSize = byte_size(Bin),
+    if
+        SplitSize < BinSize ->
+            {Last, Rest} = erlang:split_binary(Bin, SplitSize),
+            {lists:reverse(Acc, [Last]), [Rest|Data]};
+        BinSize < SplitSize ->
+            split_iovec(Data, SplitSize - BinSize, [Bin|Acc]);
+        true -> % Perfect match
+            {lists:reverse(Acc, [Bin]), Data}
+    end;
+split_iovec([], _SplitSize, Acc) ->
+    {lists:reverse(Acc),[]}.
+
 %%--------------------------------------------------------------------
 lowest_list_protocol_version(Ver, []) ->
     Ver;
diff --git a/lib/ssl/src/tls_record_1_3.erl b/lib/ssl/src/tls_record_1_3.erl
new file mode 100644
index 0000000000..74321a1ae2
--- /dev/null
+++ b/lib/ssl/src/tls_record_1_3.erl
@@ -0,0 +1,311 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2007-2018. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+
+-module(tls_record_1_3).
+
+-include("tls_record.hrl").
+-include("tls_record_1_3.hrl").
+-include("ssl_internal.hrl").
+-include("ssl_alert.hrl").
+-include("ssl_cipher.hrl").
+
+%% Encoding 
+-export([encode_handshake/2, encode_alert_record/2,
+	 encode_data/2]).
+-export([encode_plain_text/3]).
+
+%% Decoding
+-export([decode_cipher_text/2]).
+
+%%====================================================================
+%% Encoding
+%%====================================================================
+
+%%--------------------------------------------------------------------
+-spec encode_handshake(iolist(), ssl_record:connection_states()) ->
+			      {iolist(), ssl_record:connection_states()}.
+%
+%% Description: Encodes a handshake message to send on the tls-1.3-socket.
+%%--------------------------------------------------------------------
+encode_handshake(Frag, ConnectionStates) ->
+    case iolist_size(Frag) of
+	N  when N > ?MAX_PLAIN_TEXT_LENGTH ->
+            %% TODO: Consider padding here
+	    Data = split_bin(iolist_to_binary(Frag), ?MAX_PLAIN_TEXT_LENGTH),
+	    encode_iolist(?HANDSHAKE, Data, ConnectionStates);
+	_  ->
+	    encode_plain_text(?HANDSHAKE, Frag, ConnectionStates)
+    end.
+
+%%--------------------------------------------------------------------
+-spec encode_alert_record(#alert{}, ssl_record:connection_states()) ->
+				 {iolist(), ssl_record:connection_states()}.
+%%
+%% Description: Encodes an alert message to send on the ssl-socket.
+%%--------------------------------------------------------------------
+encode_alert_record(#alert{level = Level, description = Description},
+                    ConnectionStates) ->
+    encode_plain_text(?ALERT, <<?BYTE(Level), ?BYTE(Description)>>,
+		      ConnectionStates).
+%%--------------------------------------------------------------------
+-spec encode_data(binary(), ssl_record:connection_states()) ->
+			 {iolist(), ssl_record:connection_states()}.
+%%
+%% Description: Encodes data to send on the ssl-socket.
+%%--------------------------------------------------------------------
+encode_data(Frag, ConnectionStates) ->
+    Data = split_bin(Frag, ?MAX_PLAIN_TEXT_LENGTH, {3,4}),
+    encode_iolist(?APPLICATION_DATA, Data, ConnectionStates).
+
+encode_plain_text(Type, Data0, #{current_write := Write0} = ConnectionStates) ->
+    PadLen = 0, %% TODO where to specify PadLen?
+    Data = inner_plaintext(Type, Data0, PadLen),
+    CipherFragment = encode_plain_text(Data, Write0),
+    {CipherText, Write} = encode_tls_cipher_text(CipherFragment, Write0),
+    {CipherText, ConnectionStates#{current_write => Write}}.
+
+encode_iolist(Type, Data, ConnectionStates0) ->
+    {ConnectionStates, EncodedMsg} =
+        lists:foldl(fun(Text, {CS0, Encoded}) ->
+			    {Enc, CS1} =
+				encode_plain_text(Type, Text, CS0),
+			    {CS1, [Enc | Encoded]}
+		    end, {ConnectionStates0, []}, Data),
+    {lists:reverse(EncodedMsg), ConnectionStates}.
+
+%%====================================================================
+%% Decoding
+%%====================================================================
+
+%%--------------------------------------------------------------------
+-spec decode_cipher_text(#ssl_tls{}, ssl_record:connection_states()) ->
+				{#ssl_tls{}, ssl_record:connection_states()}| #alert{}.
+%%
+%% Description: Decode cipher text, use legacy type ssl_tls instead of tls_cipher_text
+%% in decoding context so that we can reuse the code from erlier versions. 
+%%--------------------------------------------------------------------
+decode_cipher_text(#ssl_tls{type = ?OPAQUE_TYPE,
+                            version = ?LEGACY_VERSION,
+                            fragment = CipherFragment},
+		   #{current_read :=
+			 #{sequence_number := Seq,
+                           cipher_state := #cipher_state{key = Key,
+                                                         iv = IV,
+                                                         tag_len = TagLen},
+			   security_parameters :=
+			       #security_parameters{
+				  cipher_type = ?AEAD,
+                                  bulk_cipher_algorithm =
+                                      BulkCipherAlgo}
+			  } = ReadState0} = ConnectionStates0) ->
+    case decipher_aead(CipherFragment, BulkCipherAlgo, Key, Seq, IV, TagLen) of
+	#alert{} = Alert ->
+	    Alert;
+	PlainFragment ->
+	    ConnectionStates =
+                ConnectionStates0#{current_read =>
+                                       ReadState0#{sequence_number => Seq + 1}},
+	    {decode_inner_plaintext(PlainFragment), ConnectionStates}
+    end;
+
+
+%% RFC8446 - TLS 1.3 (OpenSSL compatibility)
+%% Handle unencrypted Alerts from openssl s_client when server's
+%% connection states are already stepped into traffic encryption.
+%% (E.g. openssl s_client receives a CertificateRequest with
+%% a signature_algorithms_cert extension that does not contain
+%% the signature algorithm of the client's certificate.)
+decode_cipher_text(#ssl_tls{type = ?ALERT,
+                            version = ?LEGACY_VERSION,
+                            fragment = <<2,47>>},
+		   ConnectionStates0) ->
+    {#ssl_tls{type = ?ALERT,
+              version = {3,4}, %% Internally use real version
+              fragment = <<2,47>>}, ConnectionStates0};
+%% RFC8446 - TLS 1.3
+%% D.4.  Middlebox Compatibility Mode
+%%    -  If not offering early data, the client sends a dummy
+%%       change_cipher_spec record (see the third paragraph of Section 5)
+%%       immediately before its second flight.  This may either be before
+%%       its second ClientHello or before its encrypted handshake flight.
+%%       If offering early data, the record is placed immediately after the
+%%       first ClientHello.
+decode_cipher_text(#ssl_tls{type = ?CHANGE_CIPHER_SPEC,
+                            version = ?LEGACY_VERSION,
+                            fragment = <<1>>},
+		   ConnectionStates0) ->
+    {#ssl_tls{type = ?CHANGE_CIPHER_SPEC,
+              version = {3,4}, %% Internally use real version
+              fragment = <<1>>}, ConnectionStates0};
+decode_cipher_text(#ssl_tls{type = Type,
+                            version = ?LEGACY_VERSION,
+                            fragment = CipherFragment},
+		   #{current_read :=
+			 #{security_parameters :=
+			       #security_parameters{
+                                  cipher_suite = ?TLS_NULL_WITH_NULL_NULL}
+			  }} = ConnnectionStates0) ->
+    {#ssl_tls{type = Type,
+              version = {3,4}, %% Internally use real version
+              fragment = CipherFragment}, ConnnectionStates0};
+decode_cipher_text(#ssl_tls{type = Type}, _) ->
+    %% Version mismatch is already asserted
+    ?ALERT_REC(?FATAL, ?BAD_RECORD_MAC, {record_type_mismatch, Type}).
+
+%%--------------------------------------------------------------------
+%%% Internal functions
+%%--------------------------------------------------------------------
+split_bin(Bin, ChunkSize) ->
+    split_bin(Bin, ChunkSize, []).
+split_bin(Bin, ChunkSize, _) ->
+    do_split_bin(Bin, ChunkSize, []).
+
+do_split_bin(<<>>, _, Acc) ->
+    lists:reverse(Acc);
+do_split_bin(Bin, ChunkSize, Acc) ->
+    case Bin of
+        <<Chunk:ChunkSize/binary, Rest/binary>> ->
+            do_split_bin(Rest, ChunkSize, [Chunk | Acc]);
+        _ ->
+            lists:reverse(Acc, [Bin])
+    end.
+
+inner_plaintext(Type, Data, Length) ->
+    #inner_plaintext{
+       content = Data,
+       type = Type,
+       zeros = zero_padding(Length)
+      }.
+zero_padding(Length)->
+    binary:copy(<<?BYTE(0)>>, Length).
+
+encode_plain_text(#inner_plaintext{
+                     content = Data,
+                     type = Type,
+                     zeros = Zeros
+                    }, #{cipher_state := #cipher_state{key= Key,
+                                                       iv = IV,
+                                                       tag_len = TagLen},
+                         sequence_number := Seq,
+                         security_parameters :=
+                             #security_parameters{
+                                cipher_type = ?AEAD,
+                                bulk_cipher_algorithm = BulkCipherAlgo}
+                        }) ->
+    PlainText = [Data, Type, Zeros],
+    Encoded = cipher_aead(PlainText, BulkCipherAlgo, Key, Seq, IV, TagLen),
+    #tls_cipher_text{opaque_type = 23,  %% 23 (application_data) for outward compatibility
+                     legacy_version = {3,3},
+                     encoded_record = Encoded};
+encode_plain_text(#inner_plaintext{
+                     content = Data,
+                     type = Type
+                    }, #{security_parameters :=
+                             #security_parameters{
+                                cipher_suite = ?TLS_NULL_WITH_NULL_NULL}
+                        }) ->
+    %% RFC8446 - 5.1.  Record Layer
+    %% When record protection has not yet been engaged, TLSPlaintext
+    %% structures are written directly onto the wire.
+    #tls_cipher_text{opaque_type = Type,
+                      legacy_version = {3,3},
+                      encoded_record = Data};
+
+encode_plain_text(_, CS) ->
+    exit({cs, CS}).
+
+additional_data(Length) ->
+    <<?BYTE(?OPAQUE_TYPE), ?BYTE(3), ?BYTE(3),?UINT16(Length)>>.
+
+%% The per-record nonce for the AEAD construction is formed as
+%% follows:
+%%
+%% 1.  The 64-bit record sequence number is encoded in network byte
+%%     order and padded to the left with zeros to iv_length.
+%%
+%% 2.  The padded sequence number is XORed with either the static
+%%     client_write_iv or server_write_iv (depending on the role).
+%%
+%% The resulting quantity (of length iv_length) is used as the
+%% per-record nonce.
+nonce(Seq, IV) ->
+    Padding = binary:copy(<<0>>, byte_size(IV) - 8),
+    crypto:exor(<<Padding/binary,?UINT64(Seq)>>, IV).
+
+cipher_aead(Fragment, BulkCipherAlgo, Key, Seq, IV, TagLen) ->
+    AAD = additional_data(erlang:iolist_size(Fragment) + TagLen),
+    Nonce = nonce(Seq, IV),
+    {Content, CipherTag} =
+        ssl_cipher:aead_encrypt(BulkCipherAlgo, Key, Nonce, Fragment, AAD, TagLen),
+    <<Content/binary, CipherTag/binary>>.
+
+encode_tls_cipher_text(#tls_cipher_text{opaque_type = Type,
+                                        legacy_version = {MajVer, MinVer},
+                                        encoded_record = Encoded}, #{sequence_number := Seq} = Write) ->
+    Length = erlang:iolist_size(Encoded),
+    {[<<?BYTE(Type), ?BYTE(MajVer), ?BYTE(MinVer), ?UINT16(Length)>>, Encoded],
+     Write#{sequence_number => Seq +1}}.
+
+decipher_aead(CipherFragment, BulkCipherAlgo, Key, Seq, IV, TagLen) ->
+    try
+        AAD = additional_data(erlang:iolist_size(CipherFragment)),
+        Nonce = nonce(Seq, IV),
+        {CipherText, CipherTag} = aead_ciphertext_split(CipherFragment, TagLen),
+	case ssl_cipher:aead_decrypt(BulkCipherAlgo, Key, Nonce, CipherText, CipherTag, AAD) of
+	    Content when is_binary(Content) ->
+		Content;
+	    _ ->
+                ?ALERT_REC(?FATAL, ?BAD_RECORD_MAC, decryption_failed)
+	end
+    catch
+	_:_ ->
+            ?ALERT_REC(?FATAL, ?BAD_RECORD_MAC, decryption_failed)
+    end.
+
+
+aead_ciphertext_split(CipherTextFragment, TagLen)
+  when is_binary(CipherTextFragment) ->
+    CipherLen = erlang:byte_size(CipherTextFragment) - TagLen,
+    <<CipherText:CipherLen/bytes, CipherTag:TagLen/bytes>> = CipherTextFragment,
+    {CipherText, CipherTag};
+aead_ciphertext_split(CipherTextFragment, TagLen)
+  when is_list(CipherTextFragment) ->
+    CipherLen = erlang:iolist_size(CipherTextFragment) - TagLen,
+    <<CipherText:CipherLen/bytes, CipherTag:TagLen/bytes>> =
+        erlang:iolist_to_binary(CipherTextFragment),
+    {CipherText, CipherTag}.
+
+decode_inner_plaintext(PlainText) ->
+    case binary:last(PlainText) of
+        0 ->
+            decode_inner_plaintext(init_binary(PlainText));
+        Type when Type =:= ?APPLICATION_DATA orelse
+                  Type =:= ?HANDSHAKE orelse
+                  Type =:= ?ALERT ->
+            #ssl_tls{type = Type,
+                     version = {3,4}, %% Internally use real version
+                     fragment = init_binary(PlainText)};
+        _Else ->
+            ?ALERT_REC(?FATAL, ?UNEXPECTED_MESSAGE, empty_alert)
+    end.
+
+init_binary(B) ->
+    {Init, _} =
+        split_binary(B, byte_size(B) - 1),
+    Init.
diff --git a/lib/ssl/src/tls_record_1_3.hrl b/lib/ssl/src/tls_record_1_3.hrl
new file mode 100644
index 0000000000..273427a34e
--- /dev/null
+++ b/lib/ssl/src/tls_record_1_3.hrl
@@ -0,0 +1,58 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2018-2018. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+%%
+%%----------------------------------------------------------------------
+%% Purpose: Record and constant defenitions for the TLS-1.3-record protocol
+%% see RFC 8446 not present in earlier versions
+%%----------------------------------------------------------------------
+
+-ifndef(tls_record_1_3).
+-define(tls_record_1_3, true).
+
+%% enum {
+%%         invalid(0),
+%%         %% defined in ssl_record.hrl
+%%         change_cipher_spec(20),
+%%         alert(21),
+%%         handshake(22),
+%%         application_data(23),
+%%         heartbeat(24),  /* RFC 6520 */
+%%         (255)
+%%     } ContentType;
+
+-define(INVALID, 0).
+-define(LEGACY_VERSION, {3,3}).
+-define(OPAQUE_TYPE, 23).
+
+-record(inner_plaintext, {
+                          content, %% data
+                          type, %% Contentype
+                          zeros %% padding "uint8 zeros[length_of_padding]"
+                         }). 
+-record(tls_cipher_text, {  %% Equivalent of encrypted version of #ssl_tls from previous versions
+                            %% decrypted version will still use #ssl_tls for code reuse purposes
+                            %% with real values for content type and version
+                            opaque_type = ?OPAQUE_TYPE,
+                            legacy_version = ?LEGACY_VERSION,
+                            encoded_record
+                         }).
+
+-endif. % -ifdef(tls_record_1_3).
diff --git a/lib/ssl/src/tls_sender.erl b/lib/ssl/src/tls_sender.erl
index ee2b7be4f4..d0604565e3 100644
--- a/lib/ssl/src/tls_sender.erl
+++ b/lib/ssl/src/tls_sender.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2018-2018. All Rights Reserved.
+%% Copyright Ericsson AB 2018-2019. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -29,7 +29,7 @@
 
 %% API
 -export([start/0, start/1, initialize/2, send_data/2, send_alert/2,
-         send_and_ack_alert/2, setopts/2, renegotiate/1,
+         send_and_ack_alert/2, setopts/2, renegotiate/1, peer_renegotiate/1, downgrade/2,
          update_connection_state/3, dist_tls_socket/1, dist_handshake_complete/3]).
 
 %% gen_statem callbacks
@@ -38,19 +38,24 @@
 
 -define(SERVER, ?MODULE).
 
--record(data, {connection_pid,
-               connection_states = #{},
-               role,
-               socket,
-               socket_options,
-               tracker,
-               protocol_cb,
-               transport_cb,
-               negotiated_version,
-               renegotiate_at,
-               connection_monitor,
-               dist_handle
-              }).
+-record(static,
+        {connection_pid,
+         role,
+         socket,
+         socket_options,
+         tracker,
+         transport_cb,
+         negotiated_version,
+         renegotiate_at,
+         connection_monitor,
+         dist_handle,
+         log_level
+        }).
+
+-record(data,
+        {static = #static{},
+         connection_states = #{}
+        }).
 
 %%%===================================================================
 %%% API
@@ -118,6 +123,15 @@ setopts(Pid, Opts) ->
 renegotiate(Pid) ->
     %% Needs error handling for external API
     call(Pid, renegotiate).
+
+%%--------------------------------------------------------------------
+-spec peer_renegotiate(pid()) -> {ok, WriteState::map()} | {error, term()}.
+%% Description: So TLS connection process can synchronize the 
+%% encryption state to be used when handshaking.
+%%--------------------------------------------------------------------
+peer_renegotiate(Pid) ->
+     gen_statem:call(Pid, renegotiate, ?DEFAULT_TIMEOUT).
+
 %%--------------------------------------------------------------------
 -spec update_connection_state(pid(), WriteState::map(), tls_record:tls_version()) -> ok. 
 %% Description: So TLS connection process can synchronize the 
@@ -125,6 +139,21 @@ renegotiate(Pid) ->
 %%--------------------------------------------------------------------
 update_connection_state(Pid, NewState, Version) ->
     gen_statem:cast(Pid, {new_write, NewState, Version}).
+
+%%--------------------------------------------------------------------
+-spec downgrade(pid(), integer()) -> {ok, ssl_record:connection_state()}
+                                         | {error, timeout}.
+%% Description: So TLS connection process can synchronize the 
+%% encryption state to be used when sending application data. 
+%%--------------------------------------------------------------------
+downgrade(Pid, Timeout) ->
+    try gen_statem:call(Pid, downgrade, Timeout) of
+        Result ->
+            Result    
+    catch
+        _:_ ->
+            {error, timeout}
+    end.
 %%--------------------------------------------------------------------
 -spec dist_handshake_complete(pid(), node(), term()) -> ok. 
 %%  Description: Erlang distribution callback 
@@ -147,6 +176,10 @@ dist_tls_socket(Pid) ->
 callback_mode() -> 
     state_functions.
 
+
+-define(HANDLE_COMMON,
+        ?FUNCTION_NAME(Type, Msg, StateData) ->
+               handle_common(Type, Msg, StateData)).
 %%--------------------------------------------------------------------
 -spec init(Args :: term()) ->
                   gen_statem:init_result(atom()).
@@ -168,39 +201,37 @@ init({call, From}, {Pid, #{current_write := WriteState,
                            socket := Socket,
                            socket_options := SockOpts,
                            tracker := Tracker,
-                           protocol_cb := Connection,
                            transport_cb := Transport,
                            negotiated_version := Version,
-                           renegotiate_at := RenegotiateAt}}, 
-     #data{connection_states = ConnectionStates} = StateData0) ->    
+                           renegotiate_at := RenegotiateAt,
+                           log_level := LogLevel}},
+     #data{connection_states = ConnectionStates, static = Static0} = StateData0) ->
     Monitor = erlang:monitor(process, Pid),
     StateData = 
-        StateData0#data{connection_pid = Pid,
-                        connection_monitor = Monitor,
-                        connection_states = 
-                            ConnectionStates#{current_write => WriteState},
-                        role = Role,
-                        socket = Socket,
-                        socket_options = SockOpts,
-                        tracker = Tracker,
-                        protocol_cb = Connection,
-                        transport_cb = Transport,
-                        negotiated_version = Version,
-                        renegotiate_at = RenegotiateAt},          
+        StateData0#data{connection_states = ConnectionStates#{current_write => WriteState},
+                        static = Static0#static{connection_pid = Pid,
+                                                connection_monitor = Monitor,
+                                                role = Role,
+                                                socket = Socket,
+                                                socket_options = SockOpts,
+                                                tracker = Tracker,
+                                                transport_cb = Transport,
+                                                negotiated_version = Version,
+                                                renegotiate_at = RenegotiateAt,
+                                                log_level = LogLevel}},
     {next_state, handshake, StateData, [{reply, From, ok}]};
-init(info, Msg, StateData) -> 
-    handle_info(Msg, ?FUNCTION_NAME, StateData).
+init(_, _, _) ->
+    %% Just in case anything else sneeks through
+    {keep_state_and_data, [postpone]}.
+
 %%--------------------------------------------------------------------
 -spec connection(gen_statem:event_type(),
            Msg :: term(),
            StateData :: term()) ->
                   gen_statem:event_handler_result(atom()).
 %%--------------------------------------------------------------------
-connection({call, From}, renegotiate, 
-           #data{connection_states = #{current_write := Write}} = StateData) ->
-    {next_state, handshake, StateData, [{reply, From, {ok, Write}}]};
 connection({call, From}, {application_data, AppData}, 
-           #data{socket_options = #socket_options{packet = Packet}} =
+           #data{static = #static{socket_options = #socket_options{packet = Packet}}} =
                StateData) ->
     case encode_packet(Packet, AppData) of
         {error, _} = Error ->
@@ -208,37 +239,40 @@ connection({call, From}, {application_data, AppData},
         Data ->
             send_application_data(Data, From, ?FUNCTION_NAME, StateData)
     end;
-connection({call, From}, {set_opts, _} = Call, StateData) ->
-    handle_call(From, Call, ?FUNCTION_NAME, StateData);
+connection({call, From}, {ack_alert, #alert{} = Alert}, StateData0) ->
+    StateData = send_tls_alert(Alert, StateData0),
+    {next_state, ?FUNCTION_NAME, StateData,
+     [{reply,From,ok}]};
+connection({call, From}, renegotiate,
+           #data{connection_states = #{current_write := Write}} = StateData) ->
+    {next_state, handshake, StateData, [{reply, From, {ok, Write}}]};
+connection({call, From}, downgrade, #data{connection_states =
+                                              #{current_write := Write}} = StateData) ->
+    {next_state, death_row, StateData, [{reply,From, {ok, Write}}]};
+connection({call, From}, {set_opts, Opts}, StateData) ->
+    handle_set_opts(From, Opts, StateData);
 connection({call, From}, dist_get_tls_socket, 
-           #data{protocol_cb = Connection, 
-                 transport_cb = Transport,
-                 socket = Socket,
-                 connection_pid = Pid, 
-                 tracker = Tracker} = StateData) ->
-    TLSSocket = Connection:socket([Pid, self()], Transport, Socket, Connection, Tracker),
+           #data{static = #static{transport_cb = Transport,
+                                  socket = Socket,
+                                  connection_pid = Pid,
+                                  tracker = Tracker}} = StateData) ->
+    TLSSocket = tls_connection:socket([Pid, self()], Transport, Socket, Tracker),
     {next_state, ?FUNCTION_NAME, StateData, [{reply, From, {ok, TLSSocket}}]};
 connection({call, From}, {dist_handshake_complete, _Node, DHandle},
-           #data{connection_pid = Pid,
-                 socket_options = #socket_options{packet = Packet}} =
-               StateData) ->
+           #data{static = #static{connection_pid = Pid} = Static} = StateData) ->
     ok = erlang:dist_ctrl_input_handler(DHandle, Pid),
     ok = ssl_connection:dist_handshake_complete(Pid, DHandle),
     %% From now on we execute on normal priority
     process_flag(priority, normal),
-    {next_state, ?FUNCTION_NAME, StateData#data{dist_handle = DHandle},
-     [{reply, From, ok}
-      | case dist_data(DHandle, Packet) of
-            [] ->
-                [];
-            Data ->
-                [{next_event, internal,
-                  {application_packets,{self(),undefined},Data}}]
-        end]};
-connection({call, From}, {ack_alert, #alert{} = Alert}, StateData0) ->
-    StateData = send_tls_alert(Alert, StateData0),
-    {next_state, ?FUNCTION_NAME, StateData,
-     [{reply,From,ok}]};
+    {keep_state, StateData#data{static = Static#static{dist_handle = DHandle}},
+     [{reply,From,ok}|
+      case dist_data(DHandle) of
+          [] ->
+              [];
+          Data ->
+              [{next_event, internal,
+               {application_packets,{self(),undefined},erlang:iolist_to_iovec(Data)}}]
+      end]};
 connection(internal, {application_packets, From, Data}, StateData) ->
     send_application_data(Data, From, ?FUNCTION_NAME, StateData);
 %%
@@ -246,29 +280,26 @@ connection(cast, #alert{} = Alert, StateData0) ->
     StateData = send_tls_alert(Alert, StateData0),
     {next_state, ?FUNCTION_NAME, StateData};
 connection(cast, {new_write, WritesState, Version}, 
-           #data{connection_states = ConnectionStates0} = StateData) -> 
+           #data{connection_states = ConnectionStates, static = Static} = StateData) ->
     {next_state, connection, 
      StateData#data{connection_states = 
-                        ConnectionStates0#{current_write => WritesState},
-                    negotiated_version = Version}};
+                        ConnectionStates#{current_write => WritesState},
+                    static = Static#static{negotiated_version = Version}}};
 %%
-connection(info, dist_data,
-           #data{dist_handle = DHandle,
-                 socket_options = #socket_options{packet = Packet}} =
-               StateData) ->
-    {next_state, ?FUNCTION_NAME, StateData,
-      case dist_data(DHandle, Packet) of
+connection(info, dist_data, #data{static = #static{dist_handle = DHandle}}) ->
+    {keep_state_and_data,
+      case dist_data(DHandle) of
           [] ->
               [];
           Data ->
               [{next_event, internal,
-               {application_packets,{self(),undefined},Data}}]
+               {application_packets,{self(),undefined},erlang:iolist_to_iovec(Data)}}]
       end};
 connection(info, tick, StateData) ->  
     consume_ticks(),
-    {next_state, ?FUNCTION_NAME, StateData, 
-     [{next_event, {call, {self(), undefined}},
-       {application_data, <<>>}}]};
+    Data = [<<0:32>>], % encode_packet(4, <<>>)
+    From = {self(), undefined},
+    send_application_data(Data, From, ?FUNCTION_NAME, StateData);
 connection(info, {send, From, Ref, Data}, _StateData) -> 
     %% This is for testing only!
     %%
@@ -277,29 +308,37 @@ connection(info, {send, From, Ref, Data}, _StateData) ->
     From ! {Ref, ok},
     {keep_state_and_data,
      [{next_event, {call, {self(), undefined}},
-       {application_data, iolist_to_binary(Data)}}]};
-connection(info, Msg, StateData) -> 
-    handle_info(Msg, ?FUNCTION_NAME, StateData).
+       {application_data, erlang:iolist_to_iovec(Data)}}]};
+?HANDLE_COMMON.
+
 %%--------------------------------------------------------------------
 -spec handshake(gen_statem:event_type(),
                   Msg :: term(),
                   StateData :: term()) ->
                          gen_statem:event_handler_result(atom()).
 %%--------------------------------------------------------------------
-handshake({call, From}, {set_opts, _} = Call, StateData) ->
-    handle_call(From, Call, ?FUNCTION_NAME, StateData);
+handshake({call, From}, {set_opts, Opts}, StateData) ->
+    handle_set_opts(From, Opts, StateData);
 handshake({call, _}, _, _) ->
+    %% Postpone all calls to the connection state
+    {keep_state_and_data, [postpone]};
+handshake(internal, {application_packets,_,_}, _) ->
     {keep_state_and_data, [postpone]};
 handshake(cast, {new_write, WritesState, Version}, 
-          #data{connection_states = ConnectionStates0} = StateData) ->
+          #data{connection_states = ConnectionStates, static = Static} = StateData) ->
     {next_state, connection, 
-     StateData#data{connection_states = 
-                        ConnectionStates0#{current_write => WritesState},
-                   negotiated_version = Version}};
-handshake(internal, {application_packets,_,_}, _) ->
+     StateData#data{connection_states = ConnectionStates#{current_write => WritesState},
+                    static = Static#static{negotiated_version = Version}}};
+handshake(info, dist_data, _) ->
     {keep_state_and_data, [postpone]};
-handshake(info, Msg, StateData) -> 
-    handle_info(Msg, ?FUNCTION_NAME, StateData).
+handshake(info, tick, _) ->
+    %% Ignore - data is sent anyway during handshake
+    consume_ticks(),
+    keep_state_and_data;
+handshake(info, {send, _, _, _}, _) ->
+    %% Testing only, OTP distribution test suites...
+    {keep_state_and_data, [postpone]};
+?HANDLE_COMMON.
 
 %%--------------------------------------------------------------------
 -spec death_row(gen_statem:event_type(),
@@ -334,54 +373,76 @@ code_change(_OldVsn, State, Data, _Extra) ->
 %%%===================================================================
 %%% Internal functions
 %%%===================================================================
-handle_call(From, {set_opts, Opts}, StateName, #data{socket_options = SockOpts} = StateData) ->
-    {next_state, StateName, StateData#data{socket_options = set_opts(SockOpts, Opts)}, [{reply, From, ok}]}.
-        
-handle_info({'DOWN', Monitor, _, _, Reason}, _, 
-            #data{connection_monitor = Monitor,
-                  dist_handle = Handle} = StateData) when Handle =/= undefined->
-    {next_state, death_row, StateData, [{state_timeout, 5000, Reason}]};
-handle_info({'DOWN', Monitor, _, _, _}, _, 
-            #data{connection_monitor = Monitor} = StateData) ->
+
+handle_set_opts(
+  From, Opts, #data{static = #static{socket_options = SockOpts} = Static} = StateData) ->
+    {keep_state, StateData#data{static = Static#static{socket_options = set_opts(SockOpts, Opts)}},
+     [{reply, From, ok}]}.
+
+handle_common(
+  {call, From}, {set_opts, Opts},
+  #data{static = #static{socket_options = SockOpts} = Static} = StateData) ->
+    {keep_state, StateData#data{static = Static#static{socket_options = set_opts(SockOpts, Opts)}},
+     [{reply, From, ok}]};
+handle_common(
+  info, {'DOWN', Monitor, _, _, Reason},
+  #data{static = #static{connection_monitor = Monitor,
+                         dist_handle = Handle}} = StateData) when Handle =/= undefined ->
+    {next_state, death_row, StateData,
+     [{state_timeout, 5000, Reason}]};
+handle_common(
+  info, {'DOWN', Monitor, _, _, _},
+  #data{static = #static{connection_monitor = Monitor}} = StateData) ->
     {stop, normal, StateData};
-handle_info(_,_,_) ->
+handle_common(info, Msg, _) ->
+    Report =
+        io_lib:format("TLS sender: Got unexpected info: ~p ~n", [Msg]),
+    error_logger:info_report(Report),
+    keep_state_and_data;
+handle_common(Type, Msg, _) ->
+    Report =
+        io_lib:format(
+          "TLS sender: Got unexpected event: ~p ~n", [{Type,Msg}]),
+    error_logger:error_report(Report),
     keep_state_and_data.
 
-send_tls_alert(Alert, #data{negotiated_version = Version,
-                            socket = Socket,
-                            protocol_cb = Connection, 
-                            transport_cb = Transport,
-                            connection_states = ConnectionStates0} = StateData0) ->
+send_tls_alert(#alert{} = Alert,
+               #data{static = #static{negotiated_version = Version,
+                                      socket = Socket,
+                                      transport_cb = Transport,
+                                      log_level = LogLevel},
+                     connection_states = ConnectionStates0} = StateData0) ->
     {BinMsg, ConnectionStates} =
-	Connection:encode_alert(Alert, Version, ConnectionStates0),
-    Connection:send(Transport, Socket, BinMsg),
+	tls_record:encode_alert_record(Alert, Version, ConnectionStates0),
+    tls_socket:send(Transport, Socket, BinMsg),
+    ssl_logger:debug(LogLevel, outbound, 'record', BinMsg),
     StateData0#data{connection_states = ConnectionStates}.
 
 send_application_data(Data, From, StateName,
-		       #data{connection_pid = Pid,
-                             socket = Socket,
-                             dist_handle = DistHandle,
-                             negotiated_version = Version,
-                             protocol_cb = Connection,
-                             transport_cb = Transport,
-                             connection_states = ConnectionStates0,
-                             renegotiate_at = RenegotiateAt} = StateData0) ->
+		       #data{static = #static{connection_pid = Pid,
+                                              socket = Socket,
+                                              dist_handle = DistHandle,
+                                              negotiated_version = Version,
+                                              transport_cb = Transport,
+                                              renegotiate_at = RenegotiateAt,
+                                              log_level = LogLevel},
+                             connection_states = ConnectionStates0} = StateData0) ->
     case time_to_renegotiate(Data, ConnectionStates0, RenegotiateAt) of
 	true ->
 	    ssl_connection:internal_renegotiation(Pid, ConnectionStates0),
             {next_state, handshake, StateData0, 
              [{next_event, internal, {application_packets, From, Data}}]};
 	false ->
-	    {Msgs, ConnectionStates} =
-                Connection:encode_data(
-                  iolist_to_binary(Data), Version, ConnectionStates0),
+	    {Msgs, ConnectionStates} = tls_record:encode_data(Data, Version, ConnectionStates0),
             StateData = StateData0#data{connection_states = ConnectionStates},
-	    case Connection:send(Transport, Socket, Msgs) of
+	    case tls_socket:send(Transport, Socket, Msgs) of
                 ok when DistHandle =/=  undefined ->
+                    ssl_logger:debug(LogLevel, outbound, 'record', Msgs),
                     {next_state, StateName, StateData, []};
                 Reason when DistHandle =/= undefined ->
                     {next_state, death_row, StateData, [{state_timeout, 5000, Reason}]};
                 ok ->
+                    ssl_logger:debug(LogLevel, outbound, 'record', Msgs),
                     {next_state, StateName, StateData,  [{reply, From, ok}]};
                 Result ->
                     {next_state, StateName, StateData,  [{reply, From, Result}]}
@@ -392,9 +453,9 @@ send_application_data(Data, From, StateName,
 encode_packet(Packet, Data) ->
     Len = iolist_size(Data),
     case Packet of
-        1 when Len < (1 bsl 8) ->  [<<Len:8>>,Data];
-        2 when Len < (1 bsl 16) -> [<<Len:16>>,Data];
-        4 when Len < (1 bsl 32) -> [<<Len:32>>,Data];
+        1 when Len < (1 bsl 8) ->  [<<Len:8>>|Data];
+        2 when Len < (1 bsl 16) -> [<<Len:16>>|Data];
+        4 when Len < (1 bsl 32) -> [<<Len:32>>|Data];
         N when N =:= 1; N =:= 2; N =:= 4 ->
             {error,
              {badarg, {packet_to_large, Len, (1 bsl (Packet bsl 3)) - 1}}};
@@ -431,22 +492,30 @@ call(FsmPid, Event) ->
 	    {error, closed}
     end.
 
-%%---------------Erlang distribution --------------------------------------
+%%-------------- Erlang distribution helpers ------------------------------
 
-dist_data(DHandle, Packet) ->
+dist_data(DHandle) ->
     case erlang:dist_ctrl_get_data(DHandle) of
         none ->
             erlang:dist_ctrl_get_data_notification(DHandle),
             [];
-        Data ->
-            %% This is encode_packet(4, Data) without Len check
-            %% since the emulator will always deliver a Data
-            %% smaller than 4 GB, and the distribution will
-            %% therefore always have to use {packet,4}
+        %% This is encode_packet(4, Data) without Len check
+        %% since the emulator will always deliver a Data
+        %% smaller than 4 GB, and the distribution will
+        %% therefore always have to use {packet,4}
+        Data when is_binary(Data) ->
+            Len = byte_size(Data),
+            [[<<Len:32>>,Data]|dist_data(DHandle)];
+        [BA,BB] = Data ->
+            Len = byte_size(BA) + byte_size(BB),
+            [[<<Len:32>>|Data]|dist_data(DHandle)];
+        Data when is_list(Data) ->
             Len = iolist_size(Data),
-            [<<Len:32>>,Data|dist_data(DHandle, Packet)]
+            [[<<Len:32>>|Data]|dist_data(DHandle)]
     end.
 
+
+%% Empty the inbox from distribution ticks - do not let them accumulate
 consume_ticks() ->
     receive tick -> 
             consume_ticks()
diff --git a/lib/ssl/src/tls_socket.erl b/lib/ssl/src/tls_socket.erl
index a391bc53de..6c32e6fa04 100644
--- a/lib/ssl/src/tls_socket.erl
+++ b/lib/ssl/src/tls_socket.erl
@@ -32,6 +32,7 @@
 	 emulated_socket_options/2, get_emulated_opts/1, 
 	 set_emulated_opts/2, get_all_opts/1, handle_call/3, handle_cast/2,
 	 handle_info/2, code_change/3]).
+-export([update_active_n/2]).
 
 -record(state, {
 	  emulated_opts,
@@ -45,18 +46,20 @@
 send(Transport, Socket, Data) ->
     Transport:send(Socket, Data).
 
-listen(Transport, Port, #config{transport_info = {Transport, _, _, _}, 
+listen(Transport, Port, #config{transport_info = {Transport, _, _, _, _}, 
 				inet_user = Options, 
 				ssl = SslOpts, emulated = EmOpts} = Config) ->
     case Transport:listen(Port, Options ++ internal_inet_values()) of
 	{ok, ListenSocket} ->
 	    {ok, Tracker} = inherit_tracker(ListenSocket, EmOpts, SslOpts),
-	    {ok, #sslsocket{pid = {ListenSocket, Config#config{emulated = Tracker}}}};
+        Socket = #sslsocket{pid = {ListenSocket, Config#config{emulated = Tracker}}},
+        check_active_n(EmOpts, Socket),
+	    {ok, Socket};
 	Err = {error, _} ->
 	    Err
     end.
 
-accept(ListenSocket, #config{transport_info = {Transport,_,_,_} = CbInfo,
+accept(ListenSocket, #config{transport_info = {Transport,_,_,_,_} = CbInfo,
 			     connection_cb = ConnectionCb,
 			     ssl = SslOpts,
 			     emulated = Tracker}, Timeout) -> 
@@ -77,7 +80,7 @@ accept(ListenSocket, #config{transport_info = {Transport,_,_,_} = CbInfo,
 	    {error, Reason}
     end.
 
-upgrade(Socket, #config{transport_info = {Transport,_,_,_}= CbInfo,
+upgrade(Socket, #config{transport_info = {Transport,_,_,_,_}= CbInfo,
 			ssl = SslOptions,
 			emulated = EmOpts, connection_cb = ConnectionCb}, Timeout) ->
     ok = setopts(Transport, Socket, tls_socket:internal_inet_values()),
@@ -95,7 +98,7 @@ connect(Address, Port,
 	#config{transport_info = CbInfo, inet_user = UserOpts, ssl = SslOpts,
 		emulated = EmOpts, inet_ssl = SocketOpts, connection_cb = ConnetionCb},
 	Timeout) ->
-    {Transport, _, _, _} = CbInfo,
+    {Transport, _, _, _, _} = CbInfo,
     try Transport:connect(Address, Port,  SocketOpts, Timeout) of
 	{ok, Socket} ->
 	    ssl_connection:connect(ConnetionCb, Address, Port, Socket, 
@@ -117,14 +120,16 @@ socket(Pids, Transport, Socket, ConnectionCb, Tracker) ->
     #sslsocket{pid = Pids, 
 	       %% "The name "fd" is keept for backwards compatibility
 	       fd = {Transport, Socket, ConnectionCb, Tracker}}.
-setopts(gen_tcp, #sslsocket{pid = {ListenSocket, #config{emulated = Tracker}}}, Options) ->
+setopts(gen_tcp, Socket = #sslsocket{pid = {ListenSocket, #config{emulated = Tracker}}}, Options) ->
     {SockOpts, EmulatedOpts} = split_options(Options),
     ok = set_emulated_opts(Tracker, EmulatedOpts),
+    check_active_n(EmulatedOpts, Socket),
     inet:setopts(ListenSocket, SockOpts);
-setopts(_, #sslsocket{pid = {ListenSocket, #config{transport_info = {Transport,_,_,_},
+setopts(_, Socket = #sslsocket{pid = {ListenSocket, #config{transport_info = {Transport,_,_,_,_},
 						  emulated = Tracker}}}, Options) ->
     {SockOpts, EmulatedOpts} = split_options(Options),
     ok = set_emulated_opts(Tracker, EmulatedOpts),
+    check_active_n(EmulatedOpts, Socket),
     Transport:setopts(ListenSocket, SockOpts);
 %%% Following clauses will not be called for emulated options, they are  handled in the connection process
 setopts(gen_tcp, Socket, Options) ->
@@ -132,6 +137,31 @@ setopts(gen_tcp, Socket, Options) ->
 setopts(Transport, Socket, Options) ->
     Transport:setopts(Socket, Options).
 
+check_active_n(EmulatedOpts, Socket = #sslsocket{pid = {_, #config{emulated = Tracker}}}) ->
+    %% We check the resulting options to send an ssl_passive message if necessary.
+    case proplists:lookup(active, EmulatedOpts) of
+        %% The provided value is out of bound.
+        {_, N} when is_integer(N), N < -32768 ->
+            throw(einval);
+        {_, N} when is_integer(N), N > 32767 ->
+            throw(einval);
+        {_, N} when is_integer(N) ->
+            case get_emulated_opts(Tracker, [active]) of
+                [{_, false}] ->
+                    self() ! {ssl_passive, Socket},
+                    ok;
+                %% The result of the addition is out of bound.
+                [{_, A}] when is_integer(A), A < -32768 ->
+                    throw(einval);
+                [{_, A}] when is_integer(A), A > 32767 ->
+                    throw(einval);
+                _ ->
+                    ok
+            end;
+        _ ->
+            ok
+    end.
+
 getopts(gen_tcp,  #sslsocket{pid = {ListenSocket, #config{emulated = Tracker}}}, Options) ->
     {SockOptNames, EmulatedOptNames} = split_options(Options),
     EmulatedOpts = get_emulated_opts(Tracker, EmulatedOptNames),
@@ -209,7 +239,7 @@ start_link(Port, SockOpts, SslOpts) ->
 init([Port, Opts, SslOpts]) ->
     process_flag(trap_exit, true),
     true = link(Port),
-    {ok, #state{emulated_opts = Opts, port = Port, ssl_opts = SslOpts}}.
+    {ok, #state{emulated_opts = do_set_emulated_opts(Opts, []), port = Port, ssl_opts = SslOpts}}.
 
 %%--------------------------------------------------------------------
 -spec handle_call(msg(), from(), #state{}) -> {reply, reply(), #state{}}. 
@@ -304,9 +334,24 @@ split_options([Name | Opts], Emu, SocketOptNames, EmuOptNames) ->
 
 do_set_emulated_opts([], Opts) ->
     Opts;
+do_set_emulated_opts([{active, N0} | Rest], Opts) when is_integer(N0) ->
+    N = update_active_n(N0, proplists:get_value(active, Opts, false)),
+    do_set_emulated_opts(Rest, [{active, N} | proplists:delete(active, Opts)]);
 do_set_emulated_opts([{Name,_} = Opt | Rest], Opts) ->
     do_set_emulated_opts(Rest, [Opt | proplists:delete(Name, Opts)]).
 
+update_active_n(New, Current) ->
+    if
+        is_integer(Current), New + Current =< 0 ->
+            false;
+        is_integer(Current) ->
+            New + Current;
+        New =< 0 ->
+            false;
+        true ->
+            New
+    end.
+
 get_socket_opts(_, [], _) ->
     [];
 get_socket_opts(ListenSocket, SockOptNames, Cb) ->
@@ -366,6 +411,9 @@ validate_inet_option(header, Value)
   when not is_integer(Value) ->
     throw({error, {options, {header,Value}}});
 validate_inet_option(active, Value)
+  when Value >= -32768, Value =< 32767 ->
+    ok;
+validate_inet_option(active, Value)
   when Value =/= true, Value =/= false, Value =/= once ->
     throw({error, {options, {active,Value}}});
 validate_inet_option(_, _) ->
diff --git a/lib/ssl/src/tls_v1.erl b/lib/ssl/src/tls_v1.erl
index 1bfd9a8b6d..f103f3218b 100644
--- a/lib/ssl/src/tls_v1.erl
+++ b/lib/ssl/src/tls_v1.erl
@@ -32,7 +32,19 @@
 -export([master_secret/4, finished/5, certificate_verify/3, mac_hash/7, hmac_hash/3,
 	 setup_keys/8, suites/1, prf/5,
 	 ecc_curves/1, ecc_curves/2, oid_to_enum/1, enum_to_oid/1, 
-	 default_signature_algs/1, signature_algs/2]).
+	 default_signature_algs/1, signature_algs/2,
+         default_signature_schemes/1, signature_schemes/2,
+         groups/1, groups/2, group_to_enum/1, enum_to_group/1, default_groups/1]).
+
+-export([derive_secret/4, hkdf_expand_label/5, hkdf_extract/3, hkdf_expand/4,
+         key_schedule/3, key_schedule/4, create_info/3,
+         external_binder_key/2, resumption_binder_key/2,
+         client_early_traffic_secret/3, early_exporter_master_secret/3,
+         client_handshake_traffic_secret/3, server_handshake_traffic_secret/3,
+         client_application_traffic_secret_0/3, server_application_traffic_secret_0/3,
+         exporter_master_secret/3, resumption_master_secret/3,
+         update_traffic_secret/2, calculate_traffic_keys/3,
+         transcript_hash/2, finished_key/2, finished_verify_data/3]).
 
 -type named_curve() :: sect571r1 | sect571k1 | secp521r1 | brainpoolP512r1 |
                        sect409k1 | sect409r1 | brainpoolP384r1 | secp384r1 |
@@ -41,12 +53,68 @@
                        sect193r1 | sect193r2 | secp192k1 | secp192r1 | sect163k1 |
                        sect163r1 | sect163r2 | secp160k1 | secp160r1 | secp160r2.
 -type curves() :: [named_curve()].
--export_type([curves/0, named_curve/0]).
+-type group() :: secp256r1 | secp384r1 | secp521r1 | ffdhe2048 |
+                 ffdhe3072 | ffdhe4096 | ffdhe6144 | ffdhe8192.
+-type supported_groups() :: [group()].
+-export_type([curves/0, named_curve/0, group/0, supported_groups/0]).
 
 %%====================================================================
 %% Internal application API
 %%====================================================================
 
+%% TLS 1.3 ---------------------------------------------------
+-spec derive_secret(Secret::binary(), Label::binary(),
+                    Messages::iodata(), Algo::ssl:hash()) -> Key::binary().
+derive_secret(Secret, Label, Messages, Algo) ->
+    Hash = crypto:hash(mac_algo(Algo), Messages),
+    hkdf_expand_label(Secret, Label,
+                      Hash, ssl_cipher:hash_size(Algo), Algo).
+
+-spec hkdf_expand_label(Secret::binary(), Label0::binary(),
+                        Context::binary(), Length::integer(),  
+                        Algo::ssl:hash()) -> KeyingMaterial::binary().
+hkdf_expand_label(Secret, Label0, Context, Length, Algo) ->
+    HkdfLabel = create_info(Label0, Context, Length),
+    hkdf_expand(Secret, HkdfLabel, Length, Algo).
+
+%% Create info parameter for HKDF-Expand:
+%% HKDF-Expand(PRK, info, L) -> OKM
+create_info(Label0, Context0, Length) ->
+    %% struct {
+    %%     uint16 length = Length;
+    %%     opaque label<7..255> = "tls13 " + Label;
+    %%     opaque context<0..255> = Context;
+    %% } HkdfLabel;
+    Label1 = << <<"tls13 ">>/binary, Label0/binary>>,
+    LabelLen = size(Label1),
+    Label = <<?BYTE(LabelLen), Label1/binary>>,
+    ContextLen = size(Context0),
+    Context = <<?BYTE(ContextLen),Context0/binary>>,
+    Content = <<Label/binary, Context/binary>>,
+    <<?UINT16(Length), Content/binary>>.
+
+-spec hkdf_extract(MacAlg::ssl:hash(), Salt::binary(),
+                   KeyingMaterial::binary()) -> PseudoRandKey::binary().
+
+hkdf_extract(MacAlg, Salt, KeyingMaterial) -> 
+    hmac_hash(MacAlg, Salt, KeyingMaterial).
+
+
+-spec hkdf_expand(PseudoRandKey::binary(), ContextInfo::binary(),
+                  Length::integer(), Algo::ssl:hash()) -> KeyingMaterial::binary().
+                     
+hkdf_expand(PseudoRandKey, ContextInfo, Length, Algo) -> 
+    Iterations = erlang:ceil(Length / ssl_cipher:hash_size(Algo)),
+    hkdf_expand(Algo, PseudoRandKey, ContextInfo, Length, 1, Iterations, <<>>, <<>>).
+
+
+-spec transcript_hash(Messages::iodata(),  Algo::ssl:hash()) -> Hash::binary().
+
+transcript_hash(Messages, Algo) ->
+     crypto:hash(mac_algo(Algo), Messages).
+%% TLS 1.3 ---------------------------------------------------
+
+%% TLS 1.0 -1.2  ---------------------------------------------------
 -spec master_secret(integer(), binary(), binary(), binary()) -> binary().
 
 master_secret(PrfAlgo, PreMasterSecret, ClientRandom, ServerRandom) ->
@@ -56,9 +124,10 @@ master_secret(PrfAlgo, PreMasterSecret, ClientRandom, ServerRandom) ->
 
     prf(PrfAlgo, PreMasterSecret, <<"master secret">>,
 	[ClientRandom, ServerRandom], 48).
+%% TLS 1.0 -1.2  ---------------------------------------------------
 
 -spec finished(client | server, integer(), integer(), binary(), [binary()]) -> binary().
-
+%% TLS 1.0 -1.1  ---------------------------------------------------
 finished(Role, Version, PrfAlgo, MasterSecret, Handshake)
   when Version == 1; Version == 2; PrfAlgo == ?MD5SHA ->
     %% RFC 2246 & 4346 - 7.4.9. Finished
@@ -72,7 +141,9 @@ finished(Role, Version, PrfAlgo, MasterSecret, Handshake)
     MD5 = crypto:hash(md5, Handshake),
     SHA = crypto:hash(sha, Handshake),
     prf(?MD5SHA, MasterSecret, finished_label(Role), [MD5, SHA], 12);
+%% TLS 1.0 -1.1  ---------------------------------------------------
 
+%% TLS 1.2 ---------------------------------------------------
 finished(Role, Version, PrfAlgo, MasterSecret, Handshake)
   when Version == 3 ->
     %% RFC 5246 - 7.4.9. Finished
@@ -84,21 +155,28 @@ finished(Role, Version, PrfAlgo, MasterSecret, Handshake)
     %%          PRF(master_secret, finished_label, Hash(handshake_messages)) [0..11];
     Hash = crypto:hash(mac_algo(PrfAlgo), Handshake),
     prf(PrfAlgo, MasterSecret, finished_label(Role), Hash, 12).
+%% TLS 1.2 ---------------------------------------------------
+
+%% TODO 1.3 finished
 
 -spec certificate_verify(md5sha | sha, integer(), [binary()]) -> binary().
 
+%% TLS 1.0 -1.1  ---------------------------------------------------
 certificate_verify(md5sha, _Version, Handshake) ->
     MD5 = crypto:hash(md5, Handshake),
     SHA = crypto:hash(sha, Handshake),
     <<MD5/binary, SHA/binary>>;
+%% TLS 1.0 -1.1  ---------------------------------------------------
 
+%% TLS 1.2 ---------------------------------------------------
 certificate_verify(HashAlgo, _Version, Handshake) ->
     crypto:hash(HashAlgo, Handshake).
+%% TLS 1.2 ---------------------------------------------------
 
 -spec setup_keys(integer(), integer(), binary(), binary(), binary(), integer(),
 		 integer(), integer()) -> {binary(), binary(), binary(),
 					  binary(), binary(), binary()}.
-
+%% TLS v1.0  ---------------------------------------------------
 setup_keys(Version, _PrfAlgo, MasterSecret, ServerRandom, ClientRandom, HashSize,
 	   KeyMatLen, IVSize)
   when Version == 1 ->
@@ -123,8 +201,9 @@ setup_keys(Version, _PrfAlgo, MasterSecret, ServerRandom, ClientRandom, HashSize
      ClientIV:IVSize/binary, ServerIV:IVSize/binary>> = KeyBlock,
     {ClientWriteMacSecret, ServerWriteMacSecret, ClientWriteKey,
      ServerWriteKey, ClientIV, ServerIV};
+%% TLS v1.0  ---------------------------------------------------
 
-%% TLS v1.1
+%% TLS v1.1 ---------------------------------------------------
 setup_keys(Version, _PrfAlgo, MasterSecret, ServerRandom, ClientRandom, HashSize,
 	   KeyMatLen, IVSize)
   when Version == 2 ->
@@ -150,11 +229,12 @@ setup_keys(Version, _PrfAlgo, MasterSecret, ServerRandom, ClientRandom, HashSize
      ClientIV:IVSize/binary, ServerIV:IVSize/binary>> = KeyBlock,
     {ClientWriteMacSecret, ServerWriteMacSecret, ClientWriteKey,
      ServerWriteKey, ClientIV, ServerIV};
+%% TLS v1.1 ---------------------------------------------------
 
-%% TLS v1.2
+%% TLS v1.2  ---------------------------------------------------
 setup_keys(Version, PrfAlgo, MasterSecret, ServerRandom, ClientRandom, HashSize,
 	   KeyMatLen, IVSize)
-  when Version == 3 ->
+  when Version == 3; Version == 4 ->
     %% RFC 5246 - 6.3. Key calculation
     %% key_block = PRF(SecurityParameters.master_secret,
     %%                      "key expansion",
@@ -176,8 +256,177 @@ setup_keys(Version, PrfAlgo, MasterSecret, ServerRandom, ClientRandom, HashSize,
      ClientIV:IVSize/binary, ServerIV:IVSize/binary>> = KeyBlock,
     {ClientWriteMacSecret, ServerWriteMacSecret, ClientWriteKey,
      ServerWriteKey, ClientIV, ServerIV}.
+%% TLS v1.2  ---------------------------------------------------
 
--spec mac_hash(integer(), binary(), integer(), integer(), tls_record:tls_version(),
+%% TLS v1.3  ---------------------------------------------------
+%% RFC 8446  -  7.1.  Key Schedule
+%%
+%%             0
+%%             |
+%%             v
+%%   PSK ->  HKDF-Extract = Early Secret
+%%             |
+%%             +-----> Derive-Secret(., "ext binder" | "res binder", "")
+%%             |                     = binder_key
+%%             |
+%%             +-----> Derive-Secret(., "c e traffic", ClientHello)
+%%             |                     = client_early_traffic_secret
+%%             |
+%%             +-----> Derive-Secret(., "e exp master", ClientHello)
+%%             |                     = early_exporter_master_secret
+%%             v
+%%       Derive-Secret(., "derived", "")
+%%             |
+%%             v
+%%   (EC)DHE -> HKDF-Extract = Handshake Secret
+%%             |
+%%             +-----> Derive-Secret(., "c hs traffic",
+%%             |                     ClientHello...ServerHello)
+%%             |                     = client_handshake_traffic_secret
+%%             |
+%%             +-----> Derive-Secret(., "s hs traffic",
+%%             |                     ClientHello...ServerHello)
+%%             |                     = server_handshake_traffic_secret
+%%             v
+%%       Derive-Secret(., "derived", "")
+%%             |
+%%             v
+%%   0 -> HKDF-Extract = Master Secret
+%%             |
+%%             +-----> Derive-Secret(., "c ap traffic",
+%%             |                     ClientHello...server Finished)
+%%             |                     = client_application_traffic_secret_0
+%%             |
+%%             +-----> Derive-Secret(., "s ap traffic",
+%%             |                     ClientHello...server Finished)
+%%             |                     = server_application_traffic_secret_0
+%%             |
+%%             +-----> Derive-Secret(., "exp master",
+%%             |                     ClientHello...server Finished)
+%%             |                     = exporter_master_secret
+%%             |
+%%             +-----> Derive-Secret(., "res master",
+%%                                   ClientHello...client Finished)
+%%                                   = resumption_master_secret
+-spec key_schedule(early_secret | handshake_secret | master_secret,
+                   atom(), {psk | early_secret | handshake_secret, binary()}) ->
+                          {early_secret | handshake_secret | master_secret, binary()}.
+
+key_schedule(early_secret, Algo, {psk, PSK}) ->
+    Len = ssl_cipher:hash_size(Algo),
+    Salt = binary:copy(<<?BYTE(0)>>, Len),
+    {early_secret, hkdf_extract(Algo, Salt, PSK)};
+key_schedule(master_secret, Algo, {handshake_secret, Secret}) ->
+    Len = ssl_cipher:hash_size(Algo),
+    IKM = binary:copy(<<?BYTE(0)>>, Len),
+    Salt = derive_secret(Secret, <<"derived">>, <<>>, Algo),
+    {master_secret, hkdf_extract(Algo, Salt, IKM)}.
+%%
+key_schedule(handshake_secret, Algo, IKM, {early_secret, Secret}) ->
+    Salt = derive_secret(Secret, <<"derived">>, <<>>, Algo),
+    {handshake_secret, hkdf_extract(Algo, Salt, IKM)}.
+
+-spec external_binder_key(atom(), {early_secret, binary()}) -> binary().
+external_binder_key(Algo, {early_secret, Secret}) ->
+    derive_secret(Secret, <<"ext binder">>, <<>>, Algo).
+
+-spec resumption_binder_key(atom(), {early_secret, binary()}) -> binary().
+resumption_binder_key(Algo, {early_secret, Secret}) ->
+    derive_secret(Secret, <<"res binder">>, <<>>, Algo).
+
+-spec client_early_traffic_secret(atom(), {early_secret, binary()}, iodata()) -> binary().
+%% M = ClientHello
+client_early_traffic_secret(Algo, {early_secret, Secret}, M) ->
+    derive_secret(Secret, <<"c e traffic">>, M, Algo).
+
+-spec early_exporter_master_secret(atom(), {early_secret, binary()}, iodata()) -> binary().
+%% M = ClientHello
+early_exporter_master_secret(Algo, {early_secret, Secret}, M) ->
+    derive_secret(Secret, <<"e exp master">>, M, Algo).
+
+-spec client_handshake_traffic_secret(atom(), {handshake_secret, binary()}, iodata()) -> binary().
+%% M = ClientHello...ServerHello
+client_handshake_traffic_secret(Algo, {handshake_secret, Secret}, M) ->
+    derive_secret(Secret, <<"c hs traffic">>, M, Algo).
+
+-spec server_handshake_traffic_secret(atom(), {handshake_secret, binary()}, iodata()) -> binary().
+%% M = ClientHello...ServerHello
+server_handshake_traffic_secret(Algo, {handshake_secret, Secret}, M) ->
+    derive_secret(Secret, <<"s hs traffic">>, M, Algo).
+
+-spec client_application_traffic_secret_0(atom(), {master_secret, binary()}, iodata()) -> binary().
+%% M = ClientHello...server Finished
+client_application_traffic_secret_0(Algo, {master_secret, Secret}, M) ->
+    derive_secret(Secret, <<"c ap traffic">>, M, Algo).
+
+-spec server_application_traffic_secret_0(atom(), {master_secret, binary()}, iodata()) -> binary().
+%% M = ClientHello...server Finished
+server_application_traffic_secret_0(Algo, {master_secret, Secret}, M) ->
+    derive_secret(Secret, <<"s ap traffic">>, M, Algo).
+
+-spec exporter_master_secret(atom(), {master_secret, binary()}, iodata()) -> binary().
+%% M = ClientHello...server Finished
+exporter_master_secret(Algo, {master_secret, Secret}, M) ->
+    derive_secret(Secret, <<"exp master">>, M, Algo).
+
+-spec resumption_master_secret(atom(), {master_secret, binary()}, iodata()) -> binary().
+%% M = ClientHello...client Finished
+resumption_master_secret(Algo, {master_secret, Secret}, M) ->
+    derive_secret(Secret, <<"res master">>, M, Algo).
+
+-spec finished_key(binary(), atom()) -> binary().
+finished_key(BaseKey, Algo) ->
+    %% finished_key =
+    %%        HKDF-Expand-Label(BaseKey, "finished", "", Hash.length)
+    ssl_cipher:hash_size(Algo),
+    hkdf_expand_label(BaseKey, <<"finished">>, <<>>, ssl_cipher:hash_size(Algo), Algo).
+
+-spec finished_verify_data(binary(), atom(), iodata()) -> binary().
+finished_verify_data(FinishedKey, HKDFAlgo, Messages) ->
+    %% The verify_data value is computed as follows:
+    %%
+    %%       verify_data =
+    %%           HMAC(finished_key,
+    %%                Transcript-Hash(Handshake Context,
+    %%                                Certificate*, CertificateVerify*))
+    Context = lists:reverse(Messages),
+    THash = tls_v1:transcript_hash(Context, HKDFAlgo),
+    tls_v1:hmac_hash(HKDFAlgo, FinishedKey, THash).
+
+%% The next-generation application_traffic_secret is computed as:
+%%
+%%        application_traffic_secret_N+1 =
+%%            HKDF-Expand-Label(application_traffic_secret_N,
+%%                              "traffic upd", "", Hash.length)
+-spec update_traffic_secret(atom(), binary()) -> binary().
+update_traffic_secret(Algo, Secret) ->
+    hkdf_expand_label(Secret, <<"traffic upd">>, <<>>, ssl_cipher:hash_size(Algo), Algo).
+
+%% The traffic keying material is generated from the following input
+%%    values:
+%%
+%%    -  A secret value
+%%
+%%    -  A purpose value indicating the specific value being generated
+%%
+%%    -  The length of the key being generated
+%%
+%%    The traffic keying material is generated from an input traffic secret
+%%    value using:
+%%
+%%    [sender]_write_key = HKDF-Expand-Label(Secret, "key", "", key_length)
+%%    [sender]_write_iv  = HKDF-Expand-Label(Secret, "iv", "", iv_length)
+-spec calculate_traffic_keys(atom(), atom(), binary()) -> {binary(), binary()}.
+calculate_traffic_keys(HKDFAlgo, Cipher, Secret) ->
+    Key = hkdf_expand_label(Secret, <<"key">>, <<>>, ssl_cipher:key_material(Cipher), HKDFAlgo),
+    %% TODO: remove hard coded IV size
+    IV = hkdf_expand_label(Secret, <<"iv">>, <<>>, 12, HKDFAlgo),
+    {Key, IV}.
+
+%% TLS v1.3  ---------------------------------------------------
+
+%% TLS 1.0 -1.2  ---------------------------------------------------
+-spec mac_hash(integer() | atom(), binary(), integer(), integer(), tls_record:tls_version(),
 	       integer(), binary()) -> binary().
 
 mac_hash(Method, Mac_write_secret, Seq_num, Type, {Major, Minor},
@@ -191,8 +440,11 @@ mac_hash(Method, Mac_write_secret, Seq_num, Type, {Major, Minor},
 		      ?BYTE(Major), ?BYTE(Minor), ?UINT16(Length)>>,
 		     Fragment]),
     Mac.
+%% TLS 1.0 -1.2  ---------------------------------------------------
+
+%% TODO 1.3 same as above?
 
--spec suites(1|2|3) -> [ssl_cipher_format:cipher_suite()].
+-spec suites(1|2|3|4|'TLS_v1.3') -> [ssl_cipher_format:cipher_suite()].
 
 suites(Minor) when Minor == 1; Minor == 2 ->
     [
@@ -244,8 +496,29 @@ suites(3) ->
      %% ?TLS_DH_DSS_WITH_AES_256_GCM_SHA384,
      %% ?TLS_DH_RSA_WITH_AES_128_GCM_SHA256,
      %% ?TLS_DH_DSS_WITH_AES_128_GCM_SHA256
-    ] ++ suites(2).
-
+    ] ++ suites(2);
+
+suites(4) ->
+    [?TLS_AES_256_GCM_SHA384,
+     ?TLS_AES_128_GCM_SHA256,
+     ?TLS_CHACHA20_POLY1305_SHA256
+     %% Not supported
+     %% ?TLS_AES_128_CCM_SHA256,
+     %% ?TLS_AES_128_CCM_8_SHA256
+    ] ++ suites(3);
+
+suites('TLS_v1.3') ->
+    [?TLS_AES_256_GCM_SHA384,
+     ?TLS_AES_128_GCM_SHA256,
+     ?TLS_CHACHA20_POLY1305_SHA256
+     %% Not supported
+     %% ?TLS_AES_128_CCM_SHA256,
+     %% ?TLS_AES_128_CCM_8_SHA256
+    ].
+
+
+signature_algs({3, 4}, HashSigns) ->
+    signature_algs({3, 3}, HashSigns);
 signature_algs({3, 3}, HashSigns) ->
     CryptoSupports =  crypto:supports(),
     Hashes = proplists:get_value(hashs, CryptoSupports),
@@ -273,6 +546,10 @@ signature_algs({3, 3}, HashSigns) ->
 			    end, [], HashSigns),
     lists:reverse(Supported).
 
+default_signature_algs({3, 4} = Version) ->
+    %% TLS 1.3 servers shall be prepared to process TLS 1.2 ClientHellos
+    %% containing legacy hash-sign tuples.
+    default_signature_schemes(Version) ++ default_signature_algs({3,3});
 default_signature_algs({3, 3} = Version) ->
     Default = [%% SHA2
 	       {sha512, ecdsa},
@@ -291,15 +568,99 @@ default_signature_algs({3, 3} = Version) ->
 default_signature_algs(_) ->
     undefined.
 
+
+signature_schemes(Version, SignatureSchemes) when is_tuple(Version)
+                                                  andalso Version >= {3, 3} ->
+    CryptoSupports =  crypto:supports(),
+    Hashes = proplists:get_value(hashs, CryptoSupports),
+    PubKeys = proplists:get_value(public_keys, CryptoSupports),
+    Curves = proplists:get_value(curves, CryptoSupports),
+    RSAPSSSupported = lists:member(rsa_pkcs1_pss_padding,
+                                   proplists:get_value(rsa_opts, CryptoSupports)),
+    Fun = fun (Scheme, Acc) when is_atom(Scheme) ->
+                  {Hash0, Sign0, Curve} =
+                      ssl_cipher:scheme_to_components(Scheme),
+                  Sign = case Sign0 of
+                             rsa_pkcs1 ->
+                                 rsa;
+                             rsa_pss_rsae when RSAPSSSupported ->
+                                 rsa;
+                             rsa_pss_pss when RSAPSSSupported ->
+                                 rsa;
+                             S -> S
+                         end,
+                  Hash = case Hash0 of
+                             sha1 ->
+                                 sha;
+                             H -> H
+                         end,
+                  case proplists:get_bool(Sign, PubKeys)
+                      andalso proplists:get_bool(Hash, Hashes)
+                      andalso (Curve =:= undefined orelse
+                               proplists:get_bool(Curve, Curves))
+                      andalso is_pair(Hash, Sign, Hashes)
+                  of
+                      true ->
+                          [Scheme | Acc];
+                      false ->
+                          Acc
+                  end;
+              %% Special clause for filtering out the legacy hash-sign tuples.
+              (_ , Acc) ->
+                  Acc
+          end,
+    Supported = lists:foldl(Fun, [], SignatureSchemes),
+    lists:reverse(Supported);
+signature_schemes(_, _) ->
+    [].
+
+default_signature_schemes(Version) ->
+    Default = [
+               ecdsa_secp521r1_sha512,
+               ecdsa_secp384r1_sha384,
+               ecdsa_secp256r1_sha256,
+               rsa_pss_pss_sha512,
+               rsa_pss_pss_sha384,
+               rsa_pss_pss_sha256,
+               rsa_pss_rsae_sha512,
+               rsa_pss_rsae_sha384,
+               rsa_pss_rsae_sha256,
+               %% ed25519,
+               %% ed448,
+
+               %% These values refer solely to signatures
+               %% which appear in certificates (see Section 4.4.2.2) and are not
+               %% defined for use in signed TLS handshake messages, although they
+               %% MAY appear in "signature_algorithms" and
+               %% "signature_algorithms_cert" for backward compatibility with
+               %% TLS 1.2.
+               rsa_pkcs1_sha512,
+               rsa_pkcs1_sha384,
+               rsa_pkcs1_sha256,
+               ecdsa_sha1,
+               rsa_pkcs1_sha1
+              ],
+    signature_schemes(Version, Default).
+
+
 %%--------------------------------------------------------------------
 %%% Internal functions
 %%--------------------------------------------------------------------
+hkdf_expand(Algo, PseudoRandKey, ContextInfo, Length, N, N, Prev, Acc) ->
+    Keyingmaterial = hmac_hash(Algo, PseudoRandKey, <<Prev/binary, ContextInfo/binary, ?BYTE(N)>>),
+    binary:part(<<Acc/binary, Keyingmaterial/binary>>, {0, Length});
+hkdf_expand(Algo, PseudoRandKey, ContextInfo, Length, M, N, Prev, Acc) ->
+    Keyingmaterial = hmac_hash(Algo, PseudoRandKey, <<Prev/binary, ContextInfo/binary, ?BYTE(M)>>),
+    hkdf_expand(Algo, PseudoRandKey, ContextInfo, Length, M + 1, N, Keyingmaterial, <<Acc/binary, Keyingmaterial/binary>>).
+
 %%%% HMAC and the Pseudorandom Functions RFC 2246 & 4346 - 5.%%%%
 hmac_hash(?NULL, _, _) ->
     <<>>;
 hmac_hash(Alg, Key, Value) ->
     crypto:hmac(mac_algo(Alg), Key, Value).
 
+mac_algo(Alg) when is_atom(Alg) -> 
+    Alg;
 mac_algo(?MD5)    -> md5;
 mac_algo(?SHA)    -> sha;
 mac_algo(?SHA256) -> sha256;
@@ -395,6 +756,7 @@ ecc_curves(all) ->
      sect239k1,sect233k1,sect233r1,secp224k1,secp224r1,
      sect193r1,sect193r2,secp192k1,secp192r1,sect163k1,
      sect163r1,sect163r2,secp160k1,secp160r1,secp160r2];
+
 ecc_curves(Minor) ->
     TLSCurves = ecc_curves(all),
     ecc_curves(Minor, TLSCurves).
@@ -409,6 +771,63 @@ ecc_curves(_Minor, TLSCurves) ->
 			end
 		end, [], TLSCurves).
 
+-spec groups(4 | all | default) -> [group()].
+groups(all) ->
+    [x25519,
+     x448,
+     secp256r1,
+     secp384r1,
+     secp521r1,
+     ffdhe2048,
+     ffdhe3072,
+     ffdhe4096,
+     ffdhe6144,
+     ffdhe8192];
+groups(default) ->
+    [x25519,
+     x448,
+     secp256r1,
+     secp384r1];
+groups(Minor) ->
+    TLSGroups = groups(all),
+    groups(Minor, TLSGroups).
+%%
+-spec groups(4, [group()]) -> [group()].
+groups(_Minor, TLSGroups) ->
+    CryptoGroups = supported_groups(),
+    lists:filter(fun(Group) -> proplists:get_bool(Group, CryptoGroups) end, TLSGroups).
+
+default_groups(Minor) ->
+    TLSGroups = groups(default),
+    groups(Minor, TLSGroups).
+
+supported_groups() ->
+    %% TODO: Add new function to crypto?
+    proplists:get_value(curves,  crypto:supports()) ++
+        [ffdhe2048,ffdhe3072,ffdhe4096,ffdhe6144,ffdhe8192].
+
+group_to_enum(secp256r1) -> 23;
+group_to_enum(secp384r1) -> 24;
+group_to_enum(secp521r1) -> 25;
+group_to_enum(x25519)    -> 29;
+group_to_enum(x448)      -> 30;
+group_to_enum(ffdhe2048) -> 256;
+group_to_enum(ffdhe3072) -> 257;
+group_to_enum(ffdhe4096) -> 258;
+group_to_enum(ffdhe6144) -> 259;
+group_to_enum(ffdhe8192) -> 260.
+
+enum_to_group(23) -> secp256r1;
+enum_to_group(24) -> secp384r1;
+enum_to_group(25) -> secp521r1;
+enum_to_group(29) -> x25519;
+enum_to_group(30) -> x448;
+enum_to_group(256) -> ffdhe2048;
+enum_to_group(257) -> ffdhe3072;
+enum_to_group(258) -> ffdhe4096;
+enum_to_group(259) -> ffdhe6144;
+enum_to_group(260) -> ffdhe8192;
+enum_to_group(_) -> undefined.
 
 %% ECC curves from draft-ietf-tls-ecc-12.txt (Oct. 17, 2005)
 oid_to_enum(?sect163k1) -> 1;
diff --git a/lib/ssl/test/Makefile b/lib/ssl/test/Makefile
index 9dfb2eba53..f7fae16088 100644
--- a/lib/ssl/test/Makefile
+++ b/lib/ssl/test/Makefile
@@ -29,7 +29,7 @@ include $(ERL_TOP)/make/$(TARGET)/otp.mk
 # Application version
 # ----------------------------------------------------
 include ../vsn.mk
-VSN=$(GS_VSN)
+VSN=$(SSL_VSN)
 
 # ----------------------------------------------------
 # Target Specs
@@ -43,6 +43,7 @@ MODULES = \
 	ssl_basic_SUITE \
 	ssl_bench_SUITE \
 	ssl_cipher_SUITE \
+        ssl_cipher_suite_SUITE \
 	ssl_certificate_verify_SUITE\
 	ssl_crl_SUITE\
 	ssl_dist_SUITE \
@@ -61,8 +62,11 @@ MODULES = \
 	ssl_ECC\
 	ssl_upgrade_SUITE\
 	ssl_sni_SUITE \
-	make_certs\
-        x509_test
+	ssl_eqc_SUITE \
+	ssl_rfc_5869_SUITE \
+	make_certs \
+        x509_test \
+	inet_crypto_dist
 
 
 ERL_FILES = $(MODULES:%=%.erl)
@@ -144,7 +148,7 @@ release_tests_spec: opt
 	$(INSTALL_DATA)  $(ERL_FILES) $(HRL_FILES) $(HRL_FILES_NEEDED_IN_TEST) $(COVER_FILE) "$(RELSYSDIR)"
 	$(INSTALL_DATA) ssl.spec ssl_bench.spec ssl.cover "$(RELSYSDIR)"
 	chmod -R u+w "$(RELSYSDIR)"
-	@tar cf - *_SUITE_data | (cd "$(RELSYSDIR)"; tar xf -)
+	@tar cf - *_SUITE_data property_test | (cd "$(RELSYSDIR)"; tar xf -)
 
 release_docs_spec:
 
diff --git a/lib/ssl/test/inet_crypto_dist.erl b/lib/ssl/test/inet_crypto_dist.erl
new file mode 100644
index 0000000000..5aafaac983
--- /dev/null
+++ b/lib/ssl/test/inet_crypto_dist.erl
@@ -0,0 +1,1323 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2019. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+%% -------------------------------------------------------------------------
+%%
+%% Module for encrypted Erlang protocol - a minimal encrypted
+%% distribution protocol based on only a shared secret
+%% and the crypto application
+%%
+-module(inet_crypto_dist).
+-define(DIST_NAME, inet_crypto).
+-define(DIST_PROTO, crypto).
+-define(DRIVER, inet_tcp).
+-define(FAMILY, inet).
+
+-define(PROTOCOL, inet_crypto_dist_v1).
+-define(DEFAULT_BLOCK_CRYPTO, aes_128_gcm).
+-define(DEFAULT_HASH_ALGORITHM, sha256).
+-define(DEFAULT_REKEY_INTERVAL, 32768).
+
+-export([listen/1, accept/1, accept_connection/5,
+	 setup/5, close/1, select/1, is_node_name/1]).
+-export([is_supported/0]).
+
+%% Generalized dist API, for sibling IPv6 module inet6_crypto_dist
+-export([gen_listen/2, gen_accept/2, gen_accept_connection/6,
+	 gen_setup/6, gen_close/2, gen_select/2]).
+
+-export([nodelay/0]).
+
+%% Debug
+%%%-compile(export_all).
+-export([dbg/0, test_server/0, test_client/1]).
+
+-include_lib("kernel/include/net_address.hrl").
+-include_lib("kernel/include/dist.hrl").
+-include_lib("kernel/include/dist_util.hrl").
+
+%% Test if crypto has got enough capabilities for this module to run
+%%
+is_supported() ->
+    try {crypto:cipher_info(?DEFAULT_BLOCK_CRYPTO),
+         crypto:hash_info(?DEFAULT_HASH_ALGORITHM)}
+    of
+        {#{block_size := _, iv_length := _, key_length := _},
+         #{size := _}} ->
+            true
+    catch
+        error:undef ->
+            false
+    end.
+
+%% -------------------------------------------------------------------------
+%% Erlang distribution plugin structure explained to myself
+%% -------
+%% These are the processes involved in the distribution:
+%% * net_kernel
+%% * The Acceptor
+%% * The Controller | Handshaker | Ticker
+%% * The DistCtrl process that may be split into:
+%%   + The Output controller
+%%   + The Input controller
+%%   For the regular inet_tcp_dist distribution module, DistCtrl
+%%   is not one or two processes, but one port - a gen_tcp socket
+%%
+%% When the VM is started with the argument "-proto_dist inet_crypto"
+%% net_kernel registers the module inet_crypto_dist as distribution
+%% module.  net_kernel calls listen/1 to create a listen socket
+%% and then accept/1 with the listen socket as argument to spawn
+%% the Acceptor process, which is linked to net_kernel.  Apparently
+%% the listen socket is owned by net_kernel - I wonder if it could
+%% be owned by the Acceptor process instead...
+%%
+%% The Acceptor process calls blocking accept on the listen socket
+%% and when an incoming socket is returned it spawns the DistCtrl
+%% process a linked to the Acceptor.  The ownership of the accepted
+%% socket is transferred to the DistCtrl process.
+%% A message is sent to net_kernel to inform it that an incoming
+%% connection has appeared and the Acceptor awaits a reply from net_kernel.
+%%
+%% net_kernel then calls accept_connection/5 to spawn the Controller |
+%% Handshaker | Ticker process that is linked to net_kernel.
+%% The Controller then awaits a message from the Acceptor process.
+%%
+%% When net_kernel has spawned the Controller it replies with a message
+%% to the Acceptor that then calls DistCtrl to changes its links
+%% so DistCtrl ends up linked to the Controller and not to the Acceptor.
+%% The Acceptor then sends a message to the Controller.  The Controller
+%% then changes role into the Handshaker creates a #hs_data{} record
+%% and calls dist_util:handshake_other_started/1.  After this
+%% the Acceptor goes back into a blocking accept on the listen socket.
+%%
+%% For the regular distribution inet_tcp_dist DistCtrl is a gen_tcp socket
+%% and when it is a process it also acts as a socket.  The #hs_data{}
+%% record used by dist_util presents a set of funs that are used
+%% by dist_util to perform the distribution handshake.  These funs
+%% make sure to transfer the handshake messages through the DistCtrl
+%% "socket".
+%%
+%% When the handshake is finished a fun for this purpose in #hs_data{}
+%% is called, which tells DistCtrl that it does not need to be prepared
+%% for any more #hs_data{} handshake calls.  The DistCtrl process in this
+%% module then spawns the Input controller process that gets ownership
+%% of the connection's gen_tcp socket and changes into {active, N} mode
+%% so now it gets all incoming traffic and delivers that to the VM.
+%% The original DistCtrl process changes role into the Output controller
+%% process and starts asking the VM for outbound messages and transfers
+%% them on the connection socket.
+%%
+%% The Handshaker now changes into the Ticker role, and uses only two
+%% functions in the #hs_data{} record; one to get socket statistics
+%% and one to send a tick.  None of these may block for any reason
+%% in particular not for a congested socket since that would destroy
+%% connection supervision.
+%%
+%%
+%% For an connection net_kernel calls setup/5 which spawns the
+%% Controller process as linked to net_kernel.  This Controller process
+%% connects to the other node's listen socket and when that is succesful
+%% spawns the DistCtrl process as linked to the controller and transfers
+%% socket ownership to it.
+%%
+%% Then the Controller creates the #hs_data{} record and calls
+%% dist_util:handshake_we_started/1 which changes the process role
+%% into Handshaker.
+%%
+%% When the distribution handshake is finished the procedure is just
+%% as for an incoming connection above.
+%%
+%%
+%% To sum it up.
+%%
+%% There is an Acceptor process that is linked to net_kernel and
+%% informs it when new connections arrive.
+%%
+%% net_kernel spawns Controllers for incoming and for outgoing connections.
+%% these Controllers use the DistCtrl processes to do distribution
+%% handshake and after that becomes Tickers that supervise the connection.
+%%
+%% The Controller | Handshaker | Ticker is linked to net_kernel, and to
+%% DistCtrl, one or both.  If any of these connection processes would die
+%% all others should be killed by the links.  Therefore none of them may
+%% terminate with reason 'normal'.
+%% -------------------------------------------------------------------------
+
+%% -------------------------------------------------------------------------
+%% select/1 is called by net_kernel to ask if this distribution protocol
+%% is willing to handle Node
+%%
+
+select(Node) ->
+    gen_select(Node, ?DRIVER).
+
+gen_select(Node, Driver) ->
+    case dist_util:split_node(Node) of
+        {node, _, Host} ->
+	    case Driver:getaddr(Host) of
+		{ok, _} -> true;
+		_ -> false
+	    end;
+        _ ->
+            false
+    end.
+
+%% -------------------------------------------------------------------------
+
+is_node_name(Node) ->
+    dist_util:is_node_name(Node).
+
+%% -------------------------------------------------------------------------
+%% Called by net_kernel to create a listen socket for this
+%% distribution protocol.  This listen socket is used by
+%% the Acceptor process.
+%%
+
+listen(Name) ->
+    gen_listen(Name, ?DRIVER).
+
+gen_listen(Name, Driver) ->
+    case inet_tcp_dist:gen_listen(Driver, Name) of
+        {ok, {Socket, Address, Creation}} ->
+            inet:setopts(Socket, [binary, {nodelay, true}]),
+            {ok,
+             {Socket, Address#net_address{protocol = ?DIST_PROTO}, Creation}};
+        Other ->
+            Other
+    end.
+
+%% -------------------------------------------------------------------------
+%% Called by net_kernel to spawn the Acceptor process that awaits
+%% new connection in a blocking accept and informs net_kernel
+%% when a new connection has appeared, and starts the DistCtrl
+%% "socket" process for the connection.
+%%
+
+accept(Listen) ->
+    gen_accept(Listen, ?DRIVER).
+
+gen_accept(Listen, Driver) ->
+    NetKernel = self(),
+    %%
+    %% Spawn Acceptor process
+    %%
+    Config = config(),
+    monitor_dist_proc(
+      spawn_opt(
+        fun () ->
+                accept_loop(Listen, Driver, NetKernel, Config)
+        end,
+        [link, {priority, max}])).
+
+accept_loop(Listen, Driver, NetKernel, Config) ->
+    case Driver:accept(Listen) of
+        {ok, Socket} ->
+            wait_for_code_server(),
+            Timeout = net_kernel:connecttime(),
+            DistCtrl = start_dist_ctrl(Socket, Config, Timeout),
+            %% DistCtrl is a "socket"
+            NetKernel !
+                {accept,
+                 self(), DistCtrl, Driver:family(), ?DIST_PROTO},
+            receive
+                {NetKernel, controller, Controller} ->
+                    call_dist_ctrl(DistCtrl, {controller, Controller, self()}),
+                    Controller ! {self(), controller, Socket};
+                {NetKernel, unsupported_protocol} ->
+                    exit(unsupported_protocol)
+            end,
+            accept_loop(Listen, Driver, NetKernel, Config);
+        AcceptError ->
+            exit({accept, AcceptError})
+    end.
+
+wait_for_code_server() ->
+    %% This is an ugly hack.  Starting encryption on a connection
+    %% requires the crypto module to be loaded.  Loading the crypto
+    %% module triggers its on_load function, which calls
+    %% code:priv_dir/1 to find the directory where its NIF library is.
+    %% However, distribution is started earlier than the code server,
+    %% so the code server is not necessarily started yet, and
+    %% code:priv_dir/1 might fail because of that, if we receive
+    %% an incoming connection on the distribution port early enough.
+    %%
+    %% If the on_load function of a module fails, the module is
+    %% unloaded, and the function call that triggered loading it fails
+    %% with 'undef', which is rather confusing.
+    %%
+    %% So let's avoid that by waiting for the code server to start.
+    %%
+    case whereis(code_server) of
+	undefined ->
+	    timer:sleep(10),
+	    wait_for_code_server();
+	Pid when is_pid(Pid) ->
+	    ok
+    end.
+
+%% -------------------------------------------------------------------------
+%% Called by net_kernel when a new connection has appeared, to spawn
+%% a Controller process that performs the handshake with the new node,
+%% and then becomes the Ticker connection supervisor.
+%% -------------------------------------------------------------------------
+
+accept_connection(Acceptor, DistCtrl, MyNode, Allowed, SetupTime) ->
+    gen_accept_connection(
+      Acceptor, DistCtrl, MyNode, Allowed, SetupTime, ?DRIVER).
+
+gen_accept_connection(
+  Acceptor, DistCtrl, MyNode, Allowed, SetupTime, Driver) ->
+    NetKernel = self(),
+    %%
+    %% Spawn Controller/handshaker/ticker process
+    %%
+    monitor_dist_proc(
+      spawn_opt(
+        fun() ->
+                do_accept(
+                  Acceptor, DistCtrl,
+                  MyNode, Allowed, SetupTime, Driver, NetKernel)
+        end,
+        [link, {priority, max}])).
+
+do_accept(
+  Acceptor, DistCtrl, MyNode, Allowed, SetupTime, Driver, NetKernel) ->
+    receive
+	{Acceptor, controller, Socket} ->
+	    Timer = dist_util:start_timer(SetupTime),
+            HSData =
+                hs_data_common(
+                  NetKernel, MyNode, DistCtrl, Timer,
+                  Socket, Driver:family()),
+            HSData_1 =
+                HSData#hs_data{
+                  this_node = MyNode,
+                  this_flags = 0,
+                  allowed = Allowed},
+            dist_util:handshake_other_started(trace(HSData_1))
+    end.
+
+%% -------------------------------------------------------------------------
+%% Called by net_kernel to spawn a Controller process that sets up
+%% a new connection to another Erlang node, performs the handshake
+%% with the other it, and then becomes the Ticker process
+%% that supervises the connection.
+%% -------------------------------------------------------------------------
+
+setup(Node, Type, MyNode, LongOrShortNames, SetupTime) ->
+    gen_setup(Node, Type, MyNode, LongOrShortNames, SetupTime, ?DRIVER).
+
+gen_setup(Node, Type, MyNode, LongOrShortNames, SetupTime, Driver) ->
+    NetKernel = self(),
+    %%
+    %% Spawn Controller/handshaker/ticker process
+    %%
+    monitor_dist_proc(
+      spawn_opt(
+        setup_fun(
+          Node, Type, MyNode, LongOrShortNames, SetupTime, Driver, NetKernel),
+        [link, {priority, max}])).
+
+-spec setup_fun(_,_,_,_,_,_,_) -> fun(() -> no_return()).
+setup_fun(
+  Node, Type, MyNode, LongOrShortNames, SetupTime, Driver, NetKernel) ->
+    fun() ->
+            do_setup(
+              Node, Type, MyNode, LongOrShortNames, SetupTime,
+              Driver, NetKernel)
+    end.
+
+-spec do_setup(_,_,_,_,_,_,_) -> no_return().
+do_setup(
+  Node, Type, MyNode, LongOrShortNames, SetupTime, Driver, NetKernel) ->
+    {Name, Address} = split_node(Driver, Node, LongOrShortNames),
+    ErlEpmd = net_kernel:epmd_module(),
+    {ARMod, ARFun} = get_address_resolver(ErlEpmd, Driver),
+    Timer = trace(dist_util:start_timer(SetupTime)),
+    case ARMod:ARFun(Name, Address, Driver:family()) of
+    {ok, Ip, TcpPort, Version} ->
+        do_setup_connect(
+          Node, Type, MyNode, Timer, Driver, NetKernel,
+          Ip, TcpPort, Version);
+	{ok, Ip} ->
+	    case ErlEpmd:port_please(Name, Ip) of
+		{port, TcpPort, Version} ->
+                do_setup_connect(
+                  Node, Type, MyNode, Timer, Driver, NetKernel,
+                  Ip, TcpPort, Version);
+		Other ->
+		    ?shutdown2(
+                       Node,
+                       trace(
+                         {port_please_failed, ErlEpmd, Name, Ip, Other}))
+	    end;
+	Other ->
+	    ?shutdown2(
+               Node,
+               trace({getaddr_failed, Driver, Address, Other}))
+    end.
+
+-spec do_setup_connect(_,_,_,_,_,_,_,_,_) -> no_return().
+
+do_setup_connect(
+  Node, Type, MyNode, Timer, Driver, NetKernel,
+  Ip, TcpPort, Version) ->
+    dist_util:reset_timer(Timer),
+    ConnectOpts =
+        trace(
+          connect_options(
+            [binary, {active, false}, {packet, 2}, {nodelay, true}])),
+    case Driver:connect(Ip, TcpPort, ConnectOpts) of
+        {ok, Socket} ->
+            Config = config(),
+            DistCtrl =
+                start_dist_ctrl(Socket, Config, net_kernel:connecttime()),
+            %% DistCtrl is a "socket"
+            HSData =
+                hs_data_common(
+                  NetKernel, MyNode, DistCtrl, Timer,
+                  Socket, Driver:family()),
+            HSData_1 =
+                HSData#hs_data{
+                  other_node = Node,
+                  this_flags = 0,
+                  other_version = Version,
+                  request_type = Type},
+            dist_util:handshake_we_started(trace(HSData_1));
+        ConnectError ->
+            ?shutdown2(Node,
+                       trace({connect_failed, Ip, TcpPort, ConnectError}))
+    end.
+
+%% -------------------------------------------------------------------------
+%% close/1 is only called by net_kernel on the socket returned by listen/1.
+
+close(Socket) ->
+    gen_close(Socket, ?DRIVER).
+
+gen_close(Socket, Driver) ->
+    trace(Driver:close(Socket)).
+
+%% -------------------------------------------------------------------------
+
+
+hs_data_common(NetKernel, MyNode, DistCtrl, Timer, Socket, Family) ->
+    %% Field 'socket' below is set to DistCtrl, which makes
+    %% the distribution handshake process (ticker) call
+    %% the funs below with DistCtrl as the S argument.
+    %% So, S =:= DistCtrl below...
+    #hs_data{
+       kernel_pid = NetKernel,
+       this_node = MyNode,
+       socket = DistCtrl,
+       timer = Timer,
+       %%
+       f_send =
+           fun (S, Packet) when S =:= DistCtrl ->
+                   call_dist_ctrl(S, {send, Packet})
+           end,
+       f_recv =
+           fun (S, 0, infinity) when S =:= DistCtrl ->
+                   case call_dist_ctrl(S, recv) of
+                       {ok, Bin} when is_binary(Bin) ->
+                           {ok, binary_to_list(Bin)};
+                       Error ->
+                           Error
+                   end
+           end,
+       f_setopts_pre_nodeup =
+           fun (S) when S =:= DistCtrl ->
+                   ok
+           end,
+       f_setopts_post_nodeup =
+           fun (S) when S =:= DistCtrl ->
+                   ok
+           end,
+       f_getll =
+           fun (S) when S =:= DistCtrl ->
+                   {ok, S} %% DistCtrl is the distribution port
+           end,
+       f_address =
+           fun (S, Node) when S =:= DistCtrl ->
+                   case call_dist_ctrl(S, peername) of
+                       {ok, Address} ->
+                           case dist_util:split_node(Node) of
+                               {node, _, Host} ->
+                                   #net_address{
+                                      address = Address,
+                                      host = Host,
+                                      protocol = ?DIST_PROTO,
+                                      family = Family};
+                               _ ->
+                                   {error, no_node}
+                           end
+                   end
+           end,
+       f_handshake_complete =
+           fun (S, _Node, DistHandle) when S =:= DistCtrl ->
+                   call_dist_ctrl(S, {handshake_complete, DistHandle})
+           end,
+       %%
+       %% mf_tick/1, mf_getstat/1, mf_setopts/2 and mf_getopts/2
+       %% are called by the ticker any time after f_handshake_complete/3
+       %% so they may not block the caller even for congested socket
+       mf_tick =
+           fun (S) when S =:= DistCtrl ->
+                   S ! dist_tick
+           end,
+       mf_getstat =
+           fun (S) when S =:= DistCtrl ->
+                   case
+                       inet:getstat(Socket, [recv_cnt, send_cnt, send_pend])
+                   of
+                       {ok, Stat} ->
+                           split_stat(Stat, 0, 0, 0);
+                       Error ->
+                           Error
+                   end
+           end,
+       mf_setopts =
+           fun (S, Opts) when S =:= DistCtrl ->
+                   inet:setopts(Socket, setopts_filter(Opts))
+           end,
+       mf_getopts =
+           fun (S, Opts) when S =:= DistCtrl ->
+                   inet:getopts(Socket, Opts)
+           end}.
+
+setopts_filter(Opts) ->
+    [Opt ||
+        Opt <- Opts,
+        case Opt of
+            {K, _} when K =:= active; K =:= deliver; K =:= packet -> false;
+            K when K =:= list; K =:= binary -> false;
+            K when K =:= inet; K =:= inet6 -> false;
+            _ -> true
+        end].
+
+split_stat([{recv_cnt, R}|Stat], _, W, P) ->
+    split_stat(Stat, R, W, P);
+split_stat([{send_cnt, W}|Stat], R, _, P) ->
+    split_stat(Stat, R, W, P);
+split_stat([{send_pend, P}|Stat], R, W, _) ->
+    split_stat(Stat, R, W, P);
+split_stat([], R, W, P) ->
+    {ok, R, W, P}.
+
+%% ------------------------------------------------------------
+%% Determine if EPMD module supports address resolving. Default
+%% is to use inet_tcp:getaddr/2.
+%% ------------------------------------------------------------
+get_address_resolver(EpmdModule, _Driver) ->
+    case erlang:function_exported(EpmdModule, address_please, 3) of
+        true -> {EpmdModule, address_please};
+        _    -> {erl_epmd, address_please}
+    end.
+
+
+%% If Node is illegal terminate the connection setup!!
+split_node(Driver, Node, LongOrShortNames) ->
+    case dist_util:split_node(Node) of
+        {node, Name, Host} ->
+	    check_node(Driver, Node, Name, Host, LongOrShortNames);
+	{host, _} ->
+	    error_logger:error_msg(
+              "** Nodename ~p illegal, no '@' character **~n",
+              [Node]),
+	    ?shutdown2(Node, trace({illegal_node_n@me, Node}));
+	_ ->
+	    error_logger:error_msg(
+              "** Nodename ~p illegal **~n", [Node]),
+	    ?shutdown2(Node, trace({illegal_node_name, Node}))
+    end.
+
+check_node(Driver, Node, Name, Host, LongOrShortNames) ->
+    case string:split(Host, ".", all) of
+	[_] when LongOrShortNames =:= longnames ->
+	    case Driver:parse_address(Host) of
+		{ok, _} ->
+		    {Name, Host};
+		_ ->
+		    error_logger:error_msg(
+                      "** System running to use "
+                      "fully qualified hostnames **~n"
+                      "** Hostname ~s is illegal **~n",
+                      [Host]),
+		    ?shutdown2(Node, trace({not_longnames, Host}))
+	    end;
+	[_, _|_] when LongOrShortNames =:= shortnames ->
+	    error_logger:error_msg(
+              "** System NOT running to use "
+              "fully qualified hostnames **~n"
+              "** Hostname ~s is illegal **~n",
+              [Host]),
+	    ?shutdown2(Node, trace({not_shortnames, Host}));
+	_ ->
+	    {Name, Host}
+    end.
+
+%% -------------------------------------------------------------------------
+
+connect_options(Opts) ->
+    case application:get_env(kernel, inet_dist_connect_options) of
+	{ok, ConnectOpts} ->
+            Opts ++ setopts_filter(ConnectOpts);
+	_ ->
+	    Opts
+    end.
+
+%% we may not always want the nodelay behaviour
+%% for performance reasons
+nodelay() ->
+    case application:get_env(kernel, dist_nodelay) of
+	undefined ->
+	    {nodelay, true};
+	{ok, true} ->
+	    {nodelay, true};
+	{ok, false} ->
+	    {nodelay, false};
+	_ ->
+	    {nodelay, true}
+    end.
+
+config() ->
+    case init:get_argument(?DIST_NAME) of
+        error ->
+            error({missing_argument, ?DIST_NAME});
+        {ok, [[String]]} ->
+            {ok, Tokens, _} = erl_scan:string(String ++ "."),
+            case erl_parse:parse_term(Tokens) of
+                {ok, #{secret := Secret} = Config}
+                  when is_binary(Secret); is_list(Secret) ->
+                    Config;
+                {ok, #{} = Config} ->
+                    error({missing_secret, [{?DIST_NAME,Config}]});
+                _ ->
+                    error({bad_argument_value, [{?DIST_NAME,String}]})
+            end;
+        {ok, Value} ->
+            error({malformed_argument, [{?DIST_NAME,Value}]})
+    end.
+
+%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%
+%% The DistCtrl process(es).
+%%
+%% At net_kernel handshake_complete spawns off the input controller that
+%% takes over the socket ownership, and itself becomes the output controller
+%%
+%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+%%% XXX Missing to "productified":
+%%% * Cryptoanalysis by experts
+%%% * Proof of usefulness
+%%% * Unifying exit reasons using a death_row() function
+%%% * Verification (and rejection) of other end's crypto parameters
+%%% * OTP:ification (proc_lib?)
+%%% * An application to belong to (crypto|kernel?)
+%%% * Secret on file (cookie as default?), parameter handling
+%%% * Restart and/or code reload policy
+
+%% Debug client and server
+
+test_config() ->
+    #{secret => <<"Secret Cluster Password 123456">>}.
+
+test_server() ->
+    {ok, Listen} = gen_tcp:listen(0, [{packet, 2}, {active, false}, binary]),
+    {ok, Port} = inet:port(Listen),
+    io:format(?MODULE_STRING":test_client(~w).~n", [Port]),
+    {ok, Socket} = gen_tcp:accept(Listen),
+    test(Socket).
+
+test_client(Port) ->
+    {ok, Socket} =
+        gen_tcp:connect(
+          localhost, Port, [{packet, 2}, {active, false}, binary]),
+    test(Socket).
+
+test(Socket) ->
+    start_dist_ctrl(Socket, test_config(), 10000).
+
+%% -------------------------------------------------------------------------
+
+start_dist_ctrl(Socket, Config, Timeout) ->
+    Protocol = ?PROTOCOL,
+    Controller = self(),
+    Server =
+        monitor_dist_proc(
+          spawn_opt(
+            fun () ->
+                    receive
+                        {?MODULE, From, start} ->
+                            {SendParams, RecvParams} =
+                                init(Socket, Config, Protocol),
+                            reply(From, self()),
+                            handshake(SendParams, 0, RecvParams, 0, Controller)
+                    end
+            end,
+            [link,
+             {priority, max},
+             {message_queue_data, off_heap},
+             {fullsweep_after, 0}])),
+    ok = gen_tcp:controlling_process(Socket, Server),
+    call_dist_ctrl(Server, start, Timeout).
+
+
+call_dist_ctrl(Server, Msg) ->
+    call_dist_ctrl(Server, Msg, infinity).
+%%
+call_dist_ctrl(Server, Msg, Timeout) ->
+    Ref = erlang:monitor(process, Server),
+    Server ! {?MODULE, {Ref, self()}, Msg},
+    receive
+        {Ref, Res} ->
+            erlang:demonitor(Ref, [flush]),
+            Res;
+        {'DOWN', Ref, process, Server, Reason} ->
+            exit({?PROTOCOL, Reason})
+    after Timeout ->
+            exit(Server, timeout),
+            receive
+                {'DOWN', Ref, process, Server, _} ->
+                    exit({?PROTOCOL, timeout})
+            end
+    end.
+
+reply({Ref, Pid}, Msg) ->
+    Pid ! {Ref, Msg},
+    ok.
+
+%% -------------------------------------------------------------------------
+
+-record(params,
+        {protocol, % Encryption protocol tag
+         socket,
+         dist_handle,
+         hash_algorithm,
+         block_crypto,
+         rekey_interval,
+         iv,
+         key,
+         tag_len}).
+
+-define(TCP_ACTIVE, 64).
+-define(CHUNK_SIZE, (65536 - 512)).
+%% The start chunk starts with zeros, so it seems logical to not have
+%% a chunk type with value 0
+-define(HANDSHAKE_CHUNK, 1).
+-define(DATA_CHUNK, 2).
+-define(TICK_CHUNK, 3).
+-define(REKEY_CHUNK, 4).
+
+%% -------------------------------------------------------------------------
+%% Crypto strategy
+%% -------
+%% The crypto strategy is as simple as possible to get an encrypted
+%% connection as benchmark reference.  It is geared around AEAD
+%% ciphers in particular AES-GCM.
+%%
+%% The init message and the start message must fit in the TCP buffers
+%% since both sides start with sending the init message, waits
+%% for the other end's init message, sends the start message
+%% and waits for the other end's start message.  So if the send
+%% blocks we have a deadlock.
+%%
+%% The init message is unencrypted and contains the block cipher and hash
+%% algorithms the sender will use, the IV and a key salt.  Both sides'
+%% key salt is used with the mutual secret as input to the hash algorithm
+%% to create different encryption/decryption keys for both directions.
+%%
+%% The start message is the first encrypted message and contains just
+%% encrypted zeros the width of the key, with the header of the init
+%% message as AAD data.  Successfully decrypting this message
+%% verifies that we have an encrypted channel.
+%%
+%% Subsequent encrypted messages has the sequence number and the length
+%% of the message as AAD data.  These messages has got a message type
+%% differentiating data from ticks.  Ticks have a random size in an
+%% attempt to make them less obvious to spot.
+%%
+%% The only reaction to errors is to crash noisily wich will bring
+%% down the connection and hopefully produce something useful
+%% in the local log, but all the other end sees is a closed connection.
+%% -------------------------------------------------------------------------
+
+init(Socket, Config, Protocol) ->
+    Secret = maps:get(secret, Config),
+    HashAlgorithm =
+        maps:get(hash_algorithm, Config, ?DEFAULT_HASH_ALGORITHM),
+    BlockCrypto =
+        maps:get(block_crypto, Config, ?DEFAULT_BLOCK_CRYPTO),
+    RekeyInterval =
+        maps:get(rekey_interval, Config, ?DEFAULT_REKEY_INTERVAL),
+    %%
+    SendParams =
+        init_params(
+          Socket, Protocol, HashAlgorithm, BlockCrypto, RekeyInterval),
+    send_init(SendParams, Secret).
+
+send_init(
+  #params{
+     protocol = Protocol,
+     socket = Socket,
+     block_crypto = BlockCrypto,
+     iv = IVLen,
+     key = KeyLen,
+     hash_algorithm = HashAlgorithm} = SendParams,
+  Secret) ->
+    %%
+    ProtocolString = atom_to_binary(Protocol, utf8),
+    BlockCryptoString = atom_to_binary(BlockCrypto, utf8),
+    HashAlgorithmString = atom_to_binary(HashAlgorithm, utf8),
+    SendHeader =
+        <<ProtocolString/binary, 0,
+          HashAlgorithmString/binary, 0,
+          BlockCryptoString/binary, 0>>,
+    <<IV:IVLen/binary, KeySalt:KeyLen/binary>> = IV_KeySalt =
+        crypto:strong_rand_bytes(IVLen + KeyLen),
+    InitPacket = [SendHeader, IV_KeySalt],
+    ok = gen_tcp:send(Socket, InitPacket),
+    recv_init(SendParams#params{iv = IV, key = KeySalt}, Secret, SendHeader).
+
+recv_init(
+  #params{
+     socket = Socket,
+     hash_algorithm = SendHashAlgorithm,
+     key = SendKeySalt} = SendParams, Secret, SendHeader) ->
+    %%
+    {ok, InitPacket} = gen_tcp:recv(Socket, 0),
+    [ProtocolString, Rest_1] = binary:split(InitPacket, <<0>>),
+    Protocol = binary_to_existing_atom(ProtocolString, utf8),
+    case Protocol of
+        ?PROTOCOL ->
+            [HashAlgorithmString, Rest_2] = binary:split(Rest_1, <<0>>),
+            HashAlgorithm = binary_to_existing_atom(HashAlgorithmString, utf8),
+            [BlockCryptoString, Rest_3] = binary:split(Rest_2, <<0>>),
+            BlockCrypto = binary_to_existing_atom(BlockCryptoString, utf8),
+            #params{
+               hash_algorithm = RecvHashAlgorithm,
+               iv = RecvIVLen,
+               key = RecvKeyLen} = RecvParams =
+                init_params(
+                  Socket, Protocol, HashAlgorithm, BlockCrypto, undefined),
+            <<RecvIV:RecvIVLen/binary,
+              RecvKeySalt:RecvKeyLen/binary>> = Rest_3,
+            SendKey =
+                hash_key(SendHashAlgorithm, SendKeySalt, [RecvKeySalt, Secret]),
+            RecvKey =
+                hash_key(RecvHashAlgorithm, RecvKeySalt, [SendKeySalt, Secret]),
+            SendParams_1 = SendParams#params{key = SendKey},
+            RecvParams_1 = RecvParams#params{iv = RecvIV, key = RecvKey},
+            RecvHeaderLen = byte_size(InitPacket) - RecvIVLen - RecvKeyLen,
+            <<RecvHeader:RecvHeaderLen/binary, _/binary>> = InitPacket,
+            send_start(SendParams_1, SendHeader),
+            RecvRekeyInterval = recv_start(RecvParams_1, RecvHeader),
+            {SendParams_1,
+             RecvParams_1#params{rekey_interval = RecvRekeyInterval}}
+    end.
+
+send_start(
+  #params{
+     socket = Socket,
+     block_crypto = BlockCrypto,
+     rekey_interval= RekeyInterval,
+     iv = IV,
+     key = Key,
+     tag_len = TagLen}, AAD) ->
+    %%
+    KeyLen = byte_size(Key),
+    Zeros = binary:copy(<<0>>, KeyLen),
+    {Ciphertext, CipherTag} =
+        crypto:block_encrypt(
+          crypto_cipher_name(BlockCrypto),
+          Key, IV, {AAD, [Zeros, <<RekeyInterval:32>>], TagLen}),
+    ok = gen_tcp:send(Socket,  [Ciphertext, CipherTag]).
+
+recv_start(
+  #params{
+     socket = Socket,
+     block_crypto = BlockCrypto,
+     iv = IV,
+     key = Key,
+     tag_len = TagLen}, AAD) ->
+    {ok, Packet} = gen_tcp:recv(Socket, 0),
+    KeyLen = byte_size(Key),
+    PacketLen = KeyLen + 4,
+    <<Ciphertext:PacketLen/binary, CipherTag:TagLen/binary>> = Packet,
+    Zeros = binary:copy(<<0>>, KeyLen),
+    case
+        crypto:block_decrypt(
+          crypto_cipher_name(BlockCrypto),
+          Key, IV, {AAD, Ciphertext, CipherTag})
+    of
+        <<Zeros:KeyLen/binary, RekeyInterval:32>>
+          when 1 =< RekeyInterval ->
+            RekeyInterval;
+        _ ->
+            error(decrypt_error)
+    end.
+
+init_params(Socket, Protocol, HashAlgorithm, BlockCrypto, RekeyInterval) ->
+    #{block_size := 1,
+      iv_length := IVLen,
+      key_length := KeyLen} = crypto:cipher_info(BlockCrypto),
+    case crypto:hash_info(HashAlgorithm) of
+        #{size := HashSize} when HashSize >= KeyLen ->
+            #params{
+               socket = Socket,
+               protocol = Protocol,
+               hash_algorithm = HashAlgorithm,
+               block_crypto = BlockCrypto,
+               rekey_interval = RekeyInterval,
+               iv = IVLen,
+               key = KeyLen,
+               tag_len = 16}
+    end.
+
+crypto_cipher_name(BlockCrypto) ->
+    case BlockCrypto of
+        aes_128_gcm -> aes_gcm;
+        aes_192_gcm -> aes_gcm;
+        aes_256_gcm -> aes_gcm
+    end.
+
+hash_key(HashAlgorithm, KeySalt, OtherSalt) ->
+    KeyLen = byte_size(KeySalt),
+    <<Key:KeyLen/binary, _/binary>> =
+        crypto:hash(HashAlgorithm, [KeySalt, OtherSalt]),
+    Key.
+
+%% -------------------------------------------------------------------------
+%% net_kernel distribution handshake in progress
+%%
+
+handshake(
+  SendParams, SendSeq,
+  #params{socket = Socket} = RecvParams, RecvSeq, Controller) ->
+    receive
+        {?MODULE, From, {controller, Controller_1, Parent}} ->
+            Result = link(Controller_1),
+            true = unlink(Parent),
+            reply(From, Result),
+            handshake(SendParams, SendSeq, RecvParams, RecvSeq, Controller_1);
+        {?MODULE, From, {handshake_complete, DistHandle}} ->
+            reply(From, ok),
+            InputHandler =
+                monitor_dist_proc(
+                  spawn_opt(
+                    fun () ->
+                            link(Controller),
+                            receive
+                                DistHandle ->
+                                    ok =
+                                        inet:setopts(
+                                          Socket,
+                                          [{active, ?TCP_ACTIVE},
+                                           nodelay()]),
+                                    input_handler(
+                                      RecvParams#params{
+                                        dist_handle = DistHandle},
+                                      RecvSeq, empty_q(), infinity)
+                            end
+                    end,
+                    [link,
+                     {priority, normal},
+                     {message_queue_data, off_heap},
+                     {fullsweep_after, 0}])),
+            _ = monitor(process, InputHandler), % For the benchmark test
+            ok = gen_tcp:controlling_process(Socket, InputHandler),
+            ok = erlang:dist_ctrl_input_handler(DistHandle, InputHandler),
+            InputHandler ! DistHandle,
+            process_flag(priority, normal),
+            erlang:dist_ctrl_get_data_notification(DistHandle),
+            crypto:rand_seed_alg(crypto_cache),
+            output_handler(
+              SendParams#params{dist_handle = DistHandle}, SendSeq);
+        %%
+        {?MODULE, From, {send, Data}} ->
+            {SendParams_1, SendSeq_1} =
+                encrypt_and_send_chunk(
+                  SendParams, SendSeq, [?HANDSHAKE_CHUNK, Data]),
+            reply(From, ok),
+            handshake(
+              SendParams_1, SendSeq_1, RecvParams, RecvSeq, Controller);
+        {?MODULE, From, recv} ->
+            {RecvParams_1, RecvSeq_1, Reply} =
+                recv_and_decrypt_chunk(RecvParams, RecvSeq),
+            reply(From, Reply),
+            handshake(
+              SendParams, SendSeq, RecvParams_1, RecvSeq_1, Controller);
+        {?MODULE, From, peername} ->
+            reply(From, inet:peername(Socket)),
+            handshake(SendParams, SendSeq, RecvParams, RecvSeq, Controller);
+        %%
+        _Alien ->
+            handshake(SendParams, SendSeq, RecvParams, RecvSeq, Controller)
+    end.
+
+recv_and_decrypt_chunk(#params{socket = Socket} = RecvParams, RecvSeq) ->
+    case gen_tcp:recv(Socket, 0) of
+        {ok, Chunk} ->
+            case decrypt_chunk(RecvParams, RecvSeq, Chunk) of
+                <<?HANDSHAKE_CHUNK, Cleartext/binary>> ->
+                    {RecvParams, RecvSeq + 1, {ok, Cleartext}};
+                #params{} = RecvParams_1 ->
+                    recv_and_decrypt_chunk(RecvParams_1, 0);
+                _ ->
+                    error(decrypt_error)
+            end;
+        Error ->
+            {RecvParams, RecvSeq, Error}
+    end.
+
+%% -------------------------------------------------------------------------
+%% Output handler process
+%%
+%% The game here is to flush all dist_data and dist_tick messages,
+%% prioritize dist_data over dist_tick, and to not use selective receive
+
+output_handler(Params, Seq) ->
+    receive
+        Msg ->
+            case Msg of
+                dist_data ->
+                    output_handler_data(Params, Seq);
+                dist_tick ->
+                    output_handler_tick(Params, Seq);
+                _Other ->
+                    %% Ignore
+                    output_handler(Params, Seq)
+            end
+    end.
+
+output_handler_data(Params, Seq) ->
+    receive
+        Msg ->
+            case Msg of
+                dist_data ->
+                    output_handler_data(Params, Seq);
+                dist_tick ->
+                    output_handler_data(Params, Seq);
+                _Other ->
+                    %% Ignore
+                    output_handler_data(Params, Seq)
+            end
+    after 0 ->
+            DistHandle = Params#params.dist_handle,
+            Q = get_data(DistHandle, empty_q()),
+            {Params_1, Seq_1} = output_handler_send(Params, Seq, Q, true),
+            erlang:dist_ctrl_get_data_notification(DistHandle),
+            output_handler(Params_1, Seq_1)
+    end.
+
+output_handler_tick(Params, Seq) ->
+    receive
+        Msg ->
+            case Msg of
+                dist_data ->
+                    output_handler_data(Params, Seq);
+                dist_tick ->
+                    output_handler_tick(Params, Seq);
+                _Other ->
+                    %% Ignore
+                    output_handler_tick(Params, Seq)
+            end
+    after 0 ->
+            TickSize = 8 + rand:uniform(56),
+            TickData = binary:copy(<<0>>, TickSize),
+            {Params_1, Seq_1} =
+                encrypt_and_send_chunk(Params, Seq, [?TICK_CHUNK, TickData]),
+            output_handler(Params_1, Seq_1)
+    end.
+
+output_handler_send(
+  #params{dist_handle = DistHandle} = Params, Seq, {_, Size, _} = Q, Retry) ->
+    %%
+    if
+        ?CHUNK_SIZE < Size ->
+            {Cleartext, Q_1} = deq_iovec(?CHUNK_SIZE, Q),
+            {Params_1, Seq_1} =
+                encrypt_and_send_chunk(Params, Seq, [?DATA_CHUNK, Cleartext]),
+            output_handler_send(Params_1, Seq_1, Q_1, Retry);
+        Retry ->
+            Q_1 = get_data(DistHandle, Q),
+            output_handler_send(Params, Seq, Q_1, false);
+        true ->
+            {Cleartext, _} = deq_iovec(Size, Q),
+            encrypt_and_send_chunk(Params, Seq, [?DATA_CHUNK, Cleartext])
+    end.
+
+%% -------------------------------------------------------------------------
+%% Input handler process
+%%
+%% Here is T 0 or infinity to steer if we should try to receive
+%% more data or not; start with infinity, and when we get some
+%% data try with 0 to see if more is waiting
+
+input_handler(#params{socket = Socket} = Params, Seq, Q, T) ->
+    receive
+        Msg ->
+            case Msg of
+                {tcp_passive, Socket} ->
+                    ok = inet:setopts(Socket, [{active, ?TCP_ACTIVE}]),
+                    Q_1 =
+                        case T of
+                            0 ->
+                                deliver_data(Params#params.dist_handle, Q);
+                            infinity ->
+                                Q
+                        end,
+                    input_handler(Params, Seq, Q_1, infinity);
+                {tcp, Socket, Chunk} ->
+                    input_chunk(Params, Seq, Q, Chunk);
+                {tcp_closed, Socket} ->
+                    error(connection_closed);
+                _Other ->
+                    %% Ignore...
+                    input_handler(Params, Seq, Q, T)
+            end
+    after T ->
+            Q_1 = deliver_data(Params#params.dist_handle, Q),
+            input_handler(Params, Seq, Q_1, infinity)
+    end.
+
+input_chunk(Params, Seq, Q, Chunk) ->
+    case decrypt_chunk(Params, Seq, Chunk) of
+        <<?DATA_CHUNK, Cleartext/binary>> ->
+            input_handler(Params, Seq + 1, enq_binary(Cleartext, Q), 0);
+        <<?TICK_CHUNK, _/binary>> ->
+            input_handler(Params, Seq + 1, Q, 0);
+        #params{} = Params_1 ->
+            input_handler(Params_1, 0, Q, 0);
+        _ ->
+            error(decrypt_error)
+    end.
+
+%% -------------------------------------------------------------------------
+%% erlang:dist_ctrl_* helpers
+
+%% Get data for sending from the VM and place it in a queue
+%%
+get_data(DistHandle, {Front, Size, Rear}) ->
+    get_data(DistHandle, Front, Size, Rear).
+%%
+get_data(DistHandle, Front, Size, Rear) ->
+    case erlang:dist_ctrl_get_data(DistHandle) of
+        none ->
+            {Front, Size, Rear};
+        Bin when is_binary(Bin)  ->
+            Len = byte_size(Bin),
+            get_data(
+              DistHandle, Front, Size + 4 + Len,
+              [Bin, <<Len:32>>|Rear]);
+        [Bin1, Bin2] ->
+            Len = byte_size(Bin1) + byte_size(Bin2),
+            get_data(
+              DistHandle, Front, Size + 4 + Len,
+              [Bin2, Bin1, <<Len:32>>|Rear]);
+        Iovec ->
+            Len = iolist_size(Iovec),
+            get_data(
+              DistHandle, Front, Size + 4 + Len,
+              lists:reverse(Iovec, [<<Len:32>>|Rear]))
+    end.
+
+%% De-packet and deliver received data to the VM from a queue
+%%
+deliver_data(DistHandle, Q) ->
+    case Q of
+        {[], Size, []} ->
+            Size = 0, % Assert
+            Q;
+        {[], Size, Rear} ->
+            [Bin|Front] = lists:reverse(Rear),
+            deliver_data(DistHandle, Front, Size, [], Bin);
+        {[Bin|Front], Size, Rear} ->
+            deliver_data(DistHandle, Front, Size, Rear, Bin)
+    end.
+%%
+deliver_data(DistHandle, Front, Size, Rear, Bin) ->
+    case Bin of
+        <<DataSizeA:32, DataA:DataSizeA/binary,
+          DataSizeB:32, DataB:DataSizeB/binary, Rest/binary>> ->
+            erlang:dist_ctrl_put_data(DistHandle, DataA),
+            erlang:dist_ctrl_put_data(DistHandle, DataB),
+            deliver_data(
+              DistHandle,
+              Front, Size - (4 + DataSizeA + 4 + DataSizeB), Rear,
+              Rest);
+        <<DataSize:32, Data:DataSize/binary, Rest/binary>> ->
+            erlang:dist_ctrl_put_data(DistHandle, Data),
+            deliver_data(DistHandle, Front, Size - (4 + DataSize), Rear, Rest);
+        <<DataSize:32, FirstData/binary>> ->
+            TotalSize = 4 + DataSize,
+            if
+                TotalSize =< Size ->
+                    BinSize = byte_size(Bin),
+                    {MoreData, Q} =
+                        deq_iovec(
+                          TotalSize - BinSize,
+                          Front, Size - BinSize, Rear),
+                    erlang:dist_ctrl_put_data(DistHandle, [FirstData|MoreData]),
+                    deliver_data(DistHandle, Q);
+                true -> % Incomplete data
+                    {[Bin|Front], Size, Rear}
+            end;
+        <<_/binary>> ->
+            BinSize = byte_size(Bin),
+            if
+                4 =< Size -> % Fragmented header - extract a header bin
+                    {RestHeader, {Front_1, _Size_1, Rear_1}} =
+                        deq_iovec(4 - BinSize, Front, Size - BinSize, Rear),
+                    Header = iolist_to_binary([Bin|RestHeader]),
+                    deliver_data(DistHandle, Front_1, Size, Rear_1, Header);
+                true -> % Incomplete header
+                    {[Bin|Front], Size, Rear}
+            end
+    end.
+
+%% -------------------------------------------------------------------------
+%% Encryption and decryption helpers
+
+encrypt_and_send_chunk(
+  #params{
+     socket = Socket, rekey_interval = Seq,
+     key = Key, iv = IV, hash_algorithm = HashAlgorithm} = Params,
+  Seq, Cleartext) ->
+    %%
+    KeyLen = byte_size(Key),
+    IVLen = byte_size(IV),
+    Chunk = <<IV_1:IVLen/binary, KeySalt:KeyLen/binary>> =
+        crypto:strong_rand_bytes(IVLen + KeyLen),
+    ok = gen_tcp:send(Socket, encrypt_chunk(Params, Seq, [?REKEY_CHUNK, Chunk])),
+    Key_1 = hash_key(HashAlgorithm, Key, KeySalt),
+    Params_1 = Params#params{key = Key_1, iv = IV_1},
+    ok = gen_tcp:send(Socket, encrypt_chunk(Params_1, 0, Cleartext)),
+    {Params_1, 1};
+encrypt_and_send_chunk(#params{socket = Socket} = Params, Seq, Cleartext) ->
+    ok = gen_tcp:send(Socket, encrypt_chunk(Params, Seq, Cleartext)),
+    {Params, Seq + 1}.
+
+encrypt_chunk(
+  #params{
+     block_crypto = BlockCrypto,
+     iv = IV, key = Key, tag_len = TagLen}, Seq, Cleartext) ->
+    %%
+    ChunkLen = iolist_size(Cleartext) + TagLen,
+    AAD = <<Seq:32, ChunkLen:32>>,
+    {Ciphertext, CipherTag} =
+        crypto:block_encrypt(
+          crypto_cipher_name(BlockCrypto), Key, IV, {AAD, Cleartext, TagLen}),
+    Chunk = [Ciphertext,CipherTag],
+    Chunk.
+
+decrypt_chunk(
+  #params{
+     block_crypto = BlockCrypto,
+     iv = IV, key = Key, tag_len = TagLen} = Params, Seq, Chunk) ->
+    %%
+    ChunkLen = byte_size(Chunk),
+    true = TagLen =< ChunkLen, % Assert
+    AAD = <<Seq:32, ChunkLen:32>>,
+    CiphertextLen = ChunkLen - TagLen,
+    <<Ciphertext:CiphertextLen/binary, CipherTag:TagLen/binary>> = Chunk,
+    block_decrypt(
+      Params, Seq, crypto_cipher_name(BlockCrypto),
+      Key, IV, {AAD, Ciphertext, CipherTag}).
+
+block_decrypt(
+  #params{rekey_interval = Seq} = Params, Seq, CipherName, Key, IV, Data) ->
+    %%
+    KeyLen = byte_size(Key),
+    IVLen = byte_size(IV),
+    case crypto:block_decrypt(CipherName, Key, IV, Data) of
+        <<?REKEY_CHUNK, IV_1:IVLen/binary, KeySalt:KeyLen/binary>> ->
+            Key_1 = hash_key(Params#params.hash_algorithm, Key, KeySalt),
+            Params#params{iv = IV_1, key = Key_1};
+        _ ->
+            error(decrypt_error)
+    end;
+block_decrypt(_Params, _Seq, CipherName, Key, IV, Data) ->
+    crypto:block_decrypt(CipherName, Key, IV, Data).
+
+%% -------------------------------------------------------------------------
+%% Queue of binaries i.e an iovec queue
+
+empty_q() ->
+    {[], 0, []}.
+
+enq_binary(Bin, {Front, Size, Rear}) ->
+    {Front, Size + byte_size(Bin), [Bin|Rear]}.
+
+deq_iovec(GetSize, {Front, Size, Rear}) when GetSize =< Size ->
+    deq_iovec(GetSize, Front, Size, Rear, []).
+%%
+deq_iovec(GetSize, Front, Size, Rear) ->
+    deq_iovec(GetSize, Front, Size, Rear, []).
+%%
+deq_iovec(GetSize, [], Size, Rear, Acc) ->
+    deq_iovec(GetSize, lists:reverse(Rear), Size, [], Acc);
+deq_iovec(GetSize, [Bin|Front], Size, Rear, Acc) ->
+    BinSize = byte_size(Bin),
+    if
+        BinSize < GetSize ->
+            deq_iovec(
+              GetSize - BinSize, Front, Size - BinSize, Rear, [Bin|Acc]);
+        GetSize < BinSize ->
+            {Bin1,Bin2} = erlang:split_binary(Bin, GetSize),
+            {lists:reverse(Acc, [Bin1]), {[Bin2|Front], Size - GetSize, Rear}};
+        true ->
+            {lists:reverse(Acc, [Bin]), {Front, Size - BinSize, Rear}}
+    end.
+
+%% -------------------------------------------------------------------------
+
+%% Trace point
+trace(Term) -> Term.
+
+%% Keep an eye on this Pid (debug)
+monitor_dist_proc(Pid) ->
+%%%    spawn(
+%%%      fun () ->
+%%%              MRef = erlang:monitor(process, Pid),
+%%%              receive
+%%%                  {'DOWN', MRef, _, _, normal} ->
+%%%                      error_logger:error_report(
+%%%                        [dist_proc_died,
+%%%                         {reason, normal},
+%%%                         {pid, Pid}]);
+%%%                  {'DOWN', MRef, _, _, Reason} ->
+%%%                      error_logger:info_report(
+%%%                        [dist_proc_died,
+%%%                         {reason, Reason},
+%%%                         {pid, Pid}])
+%%%              end
+%%%      end),
+    Pid.
+
+dbg() ->
+    dbg:stop(),
+    dbg:tracer(),
+    dbg:p(all, c),
+    dbg:tpl(?MODULE, cx),
+    dbg:tpl(erlang, dist_ctrl_get_data_notification, cx),
+    dbg:tpl(erlang, dist_ctrl_get_data, cx),
+    dbg:tpl(erlang, dist_ctrl_put_data, cx),
+    ok.
diff --git a/lib/ssl/test/make_certs.erl b/lib/ssl/test/make_certs.erl
index 8fe7c54549..76bf0fa895 100644
--- a/lib/ssl/test/make_certs.erl
+++ b/lib/ssl/test/make_certs.erl
@@ -189,6 +189,18 @@ gencrl(Root, CA, C, CrlHours) ->
     Env = [{"ROOTDIR", filename:absname(Root)}], 
     cmd(Cmd, Env).
 
+%% This function sets the number of seconds until the next CRL is due.
+gencrl_sec(Root, CA, C, CrlSecs) ->
+    CACnfFile = filename:join([Root, CA, "ca.cnf"]),
+    CACRLFile = filename:join([Root, CA, "crl.pem"]),
+    Cmd = [C#config.openssl_cmd, " ca"
+	   " -gencrl ",
+	   " -crlsec ", integer_to_list(CrlSecs),
+	   " -out ", CACRLFile,
+	   " -config ", CACnfFile],
+    Env = [{"ROOTDIR", filename:absname(Root)}],
+    cmd(Cmd, Env).
+
 can_generate_expired_crls(C) ->
     %% OpenSSL can generate CRLs with an expiration date in the past,
     %% if we pass a negative number for -crlhours.  However, LibreSSL
@@ -365,7 +377,7 @@ req_cnf(Root, C) ->
      "default_bits	= ", integer_to_list(C#config.default_bits), "\n"
      "RANDFILE		= $ROOTDIR/RAND\n"
      "encrypt_key	= no\n"
-     "default_md	= md5\n"
+     "default_md	= sha1\n"
      "#string_mask	= pkix\n"
      "x509_extensions	= ca_ext\n"
      "prompt		= no\n"
@@ -415,7 +427,7 @@ ca_cnf(
      ["crl_extensions = crl_ext\n" || C#config.v2_crls],
      "unique_subject  = no\n"
      "default_days	= 3600\n"
-     "default_md	= md5\n"
+     "default_md	= sha1\n"
      "preserve	        = no\n"
      "policy		= policy_match\n"
      "\n"
@@ -499,7 +511,7 @@ ca_cnf(
      ["crl_extensions = crl_ext\n" || C#config.v2_crls],
      "unique_subject  = no\n"
      "default_days	= 3600\n"
-     "default_md	= md5\n"
+     "default_md	= sha1\n"
      "preserve	        = no\n"
      "policy		= policy_match\n"
      "\n"
diff --git a/lib/ssl/test/property_test/ssl_eqc_handshake.erl b/lib/ssl/test/property_test/ssl_eqc_handshake.erl
new file mode 100644
index 0000000000..38a4b7fb11
--- /dev/null
+++ b/lib/ssl/test/property_test/ssl_eqc_handshake.erl
@@ -0,0 +1,812 @@
+%%
+%% %CopyrightBegin%
+%% 
+%% Copyright Ericsson AB 2018-2018. All Rights Reserved.
+%% 
+%% The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved online at http://www.erlang.org/.
+%% 
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%% 
+%% %CopyrightEnd%
+%%
+%%
+
+-module(ssl_eqc_handshake).
+
+-compile(export_all).
+
+-proptest(eqc).
+-proptest([triq,proper]).
+
+-ifndef(EQC).
+-ifndef(PROPER).
+-ifndef(TRIQ).
+-define(EQC,true).
+-endif.
+-endif.
+-endif.
+
+-ifdef(EQC).
+-include_lib("eqc/include/eqc.hrl").
+-define(MOD_eqc,eqc).
+
+-else.
+-ifdef(PROPER).
+-include_lib("proper/include/proper.hrl").
+-define(MOD_eqc,proper).
+
+-else.
+-ifdef(TRIQ).
+-define(MOD_eqc,triq).
+-include_lib("triq/include/triq.hrl").
+
+-endif.
+-endif.
+-endif.
+
+-include_lib("kernel/include/inet.hrl").
+-include_lib("ssl/src/tls_handshake_1_3.hrl").
+-include_lib("ssl/src/tls_handshake.hrl").
+-include_lib("ssl/src/ssl_handshake.hrl").
+-include_lib("ssl/src/ssl_alert.hrl").
+-include_lib("ssl/src/ssl_internal.hrl").
+
+-define('TLS_v1.3', {3,4}).
+-define('TLS_v1.2', {3,3}).
+-define('TLS_v1.1', {3,2}).
+-define('TLS_v1',   {3,1}).
+-define('SSL_v3',   {3,0}).
+
+%%--------------------------------------------------------------------
+%% Properties --------------------------------------------------------
+%%--------------------------------------------------------------------
+
+prop_tls_hs_encode_decode() ->
+    ?FORALL({Handshake, TLSVersion}, ?LET(Version, tls_version(), {tls_msg(Version), Version}),
+            try 
+                [Type, _Length, Data] = tls_handshake:encode_handshake(Handshake, TLSVersion),
+                case tls_handshake:decode_handshake(TLSVersion, Type, Data) of
+                    Handshake ->
+                        true;
+                    _ ->
+                        false
+                end
+            catch
+                throw:#alert{} ->
+                    true
+            end
+	   ).
+
+%%--------------------------------------------------------------------
+%% Message Generators  -----------------------------------------------
+%%--------------------------------------------------------------------
+
+tls_msg(?'TLS_v1.3'= Version) ->
+    oneof([client_hello(Version),
+           server_hello(Version),
+           %%new_session_ticket()
+          #end_of_early_data{},
+           encrypted_extensions(),
+           certificate_1_3(),
+           %%certificate_request_1_3,
+           certificate_verify_1_3(),
+           finished(),
+           key_update()
+          ]);
+tls_msg(Version) ->
+    oneof([
+           #hello_request{},
+           client_hello(Version),
+           server_hello(Version),
+           certificate(),
+           %%server_key_exchange()
+           certificate_request(Version),
+           #server_hello_done{},
+           %%certificate_verify()
+           %%client_key_exchange()
+           finished()
+          ]).
+
+%%
+%% Shared messages
+%%
+client_hello(?'TLS_v1.3' = Version) ->
+    #client_hello{session_id = session_id(),
+		  client_version = ?'TLS_v1.2',
+		  cipher_suites = cipher_suites(Version),
+		  compression_methods = compressions(Version),
+		  random = client_random(Version),
+		  extensions = client_hello_extensions(Version)    
+                 };
+client_hello(Version) ->
+    #client_hello{session_id = session_id(),
+		  client_version = Version,
+                  cipher_suites = cipher_suites(Version),
+		  compression_methods = compressions(Version),
+		  random = client_random(Version),
+		  extensions = client_hello_extensions(Version)    
+                 }.
+
+server_hello(?'TLS_v1.3' = Version) ->
+    #server_hello{server_version = ?'TLS_v1.2',
+		  session_id = session_id(),
+                  random = server_random(Version),
+                  cipher_suite = cipher_suite(Version),
+		  compression_method = compression(Version),
+		  extensions = server_hello_extensions(Version)    
+                 };
+server_hello(Version) ->
+    #server_hello{server_version = Version,
+		  session_id = session_id(),
+                  random = server_random(Version),
+                  cipher_suite = cipher_suite(Version),
+		  compression_method = compression(Version),
+		  extensions = server_hello_extensions(Version)    
+                 }.
+
+certificate() ->
+    #certificate{
+       asn1_certificates = certificate_chain()
+      }.
+
+certificate_1_3() ->
+     ?LET(Certs, certificate_chain(),
+          #certificate_1_3{
+             certificate_request_context = certificate_request_context(),
+             certificate_list = certificate_entries(Certs, [])
+            }).
+
+certificate_verify_1_3() ->
+     ?LET(Certs, certificate_chain(),
+          #certificate_verify_1_3{
+             algorithm = sig_scheme(),
+             signature = signature()
+            }).
+
+finished() ->
+    ?LET(Size, digest_size(),
+         #finished{verify_data = crypto:strong_rand_bytes(Size)}).
+
+%%
+%% TLS 1.0-1.2 messages
+%%
+
+
+
+%%
+%% TLS 1.3 messages
+%%
+
+encrypted_extensions() ->
+    ?LET(Exts, extensions(?'TLS_v1.3', encrypted_extensions),
+         #encrypted_extensions{extensions = Exts}).
+
+
+key_update() ->
+    #key_update{request_update = request_update()}.
+
+
+%%--------------------------------------------------------------------
+%% Messge Data Generators  -------------------------------------------
+%%--------------------------------------------------------------------
+
+tls_version() ->
+    oneof([?'TLS_v1.3', ?'TLS_v1.2', ?'TLS_v1.1', ?'TLS_v1', ?'SSL_v3']).
+
+cipher_suite(Version) ->
+    oneof(cipher_suites(Version)).
+
+cipher_suites(Version) ->
+    ssl_cipher:suites(Version).
+
+session_id() ->
+    crypto:strong_rand_bytes(?NUM_OF_SESSION_ID_BYTES).
+ 
+compression(Version) ->
+     oneof(compressions(Version)).
+
+compressions(_) -> 
+    ssl_record:compressions().
+
+client_random(_) ->
+    crypto:strong_rand_bytes(32).
+
+server_random(_) ->
+    crypto:strong_rand_bytes(32).
+
+
+client_hello_extensions(Version) ->
+    ?LET(Exts, extensions(Version, client_hello),
+         maps:merge(ssl_handshake:empty_extensions(Version, client_hello),
+                    Exts)).
+
+server_hello_extensions(Version) ->
+    ?LET(Exts, extensions(Version, server_hello),
+         maps:merge(ssl_handshake:empty_extensions(Version, server_hello),
+                    Exts)).
+
+key_share_client_hello() ->
+     oneof([undefined]).
+    %%oneof([#key_share_client_hello{}, undefined]).
+
+key_share_server_hello() ->
+     oneof([undefined]).
+    %%oneof([#key_share_server_hello{}, undefined]).
+
+pre_shared_keyextension() ->
+     oneof([undefined]).
+     %%oneof([#pre_shared_keyextension{},undefined]).
+
+%% +--------------------------------------------------+-------------+
+%% | Extension                                        |     TLS 1.3 |
+%% +--------------------------------------------------+-------------+
+%% | server_name [RFC6066]                            |      CH, EE |
+%% |                                                  |             |
+%% | max_fragment_length [RFC6066]                    |      CH, EE |
+%% |                                                  |             |
+%% | status_request [RFC6066]                         |  CH, CR, CT |
+%% |                                                  |             |
+%% | supported_groups [RFC7919]                       |      CH, EE |
+%% |                                                  |             |
+%% | signature_algorithms (RFC 8446)                  |      CH, CR |
+%% |                                                  |             |
+%% | use_srtp [RFC5764]                               |      CH, EE |
+%% |                                                  |             |
+%% | heartbeat [RFC6520]                              |      CH, EE |
+%% |                                                  |             |
+%% | application_layer_protocol_negotiation [RFC7301] |      CH, EE |
+%% |                                                  |             |
+%% | signed_certificate_timestamp [RFC6962]           |  CH, CR, CT |
+%% |                                                  |             |
+%% | client_certificate_type [RFC7250]                |      CH, EE |
+%% |                                                  |             |
+%% | server_certificate_type [RFC7250]                |      CH, EE |
+%% |                                                  |             |
+%% | padding [RFC7685]                                |          CH |
+%% |                                                  |             |
+%% | key_share (RFC 8446)                             | CH, SH, HRR |
+%% |                                                  |             |
+%% | pre_shared_key (RFC 8446)                        |      CH, SH |
+%% |                                                  |             |
+%% | psk_key_exchange_modes (RFC 8446)                |          CH |
+%% |                                                  |             |
+%% | early_data (RFC 8446)                            | CH, EE, NST |
+%% |                                                  |             |
+%% | cookie (RFC 8446)                                |     CH, HRR |
+%% |                                                  |             |
+%% | supported_versions (RFC 8446)                    | CH, SH, HRR |
+%% |                                                  |             |
+%% | certificate_authorities (RFC 8446)               |      CH, CR |
+%% |                                                  |             |
+%% | oid_filters (RFC 8446)                           |          CR |
+%% |                                                  |             |
+%% | post_handshake_auth (RFC 8446)                   |          CH |
+%% |                                                  |             |
+%% | signature_algorithms_cert (RFC 8446)             |      CH, CR |
+%% +--------------------------------------------------+-------------+
+extensions(?'TLS_v1.3' = Version, client_hello) ->
+     ?LET({
+           ServerName,
+           %% MaxFragmentLength,
+           %% StatusRequest,
+           SupportedGroups,
+           SignatureAlgorithms,
+           %% UseSrtp,
+           %% Heartbeat,
+           ALPN,
+           %% SignedCertTimestamp,
+           %% ClientCertiticateType,
+           %% ServerCertificateType,
+           %% Padding,
+           KeyShare,
+           %% PreSharedKey,
+           %% PSKKeyExchangeModes,
+           %% EarlyData,
+           %% Cookie,
+           SupportedVersions,
+           %% CertAuthorities,
+           %% PostHandshakeAuth,
+           SignatureAlgorithmsCert
+          },
+          {
+           oneof([server_name(), undefined]),
+           %% oneof([max_fragment_length(), undefined]),
+           %% oneof([status_request(), undefined]),
+           oneof([supported_groups(Version), undefined]),
+           oneof([signature_algs(Version), undefined]),
+           %% oneof([use_srtp(), undefined]),
+           %% oneof([heartbeat(), undefined]),
+           oneof([alpn(), undefined]),
+           %% oneof([signed_cert_timestamp(), undefined]),
+           %% oneof([client_cert_type(), undefined]),
+           %% oneof([server_cert_type(), undefined]),
+           %% oneof([padding(), undefined]),
+           oneof([key_share(client_hello), undefined]),
+           %% oneof([pre_shared_key(), undefined]),
+           %% oneof([psk_key_exchange_modes(), undefined]),
+           %% oneof([early_data(), undefined]),
+           %% oneof([cookie(), undefined]),
+           oneof([client_hello_versions(Version)]),
+           %% oneof([cert_authorities(), undefined]),
+           %% oneof([post_handshake_auth(), undefined]),
+           oneof([signature_algs_cert(), undefined])
+          },
+          maps:filter(fun(_, undefined) ->
+                              false;
+                         (_,_) ->
+                              true
+                      end,
+                      #{
+                        sni => ServerName,
+                        %% max_fragment_length => MaxFragmentLength,
+                        %% status_request => StatusRequest,
+                        elliptic_curves => SupportedGroups,
+                        signature_algs => SignatureAlgorithms,
+                        %% use_srtp => UseSrtp,
+                        %% heartbeat => Heartbeat,
+                        alpn => ALPN,
+                        %% signed_cert_timestamp => SignedCertTimestamp,
+                        %% client_cert_type => ClientCertificateType,
+                        %% server_cert_type => ServerCertificateType,
+                        %% padding => Padding,
+                        key_share => KeyShare,
+                        %% pre_shared_key => PreSharedKey,
+                        %% psk_key_exhange_modes => PSKKeyExchangeModes,
+                        %% early_data => EarlyData,
+                        %% cookie => Cookie,
+                        client_hello_versions => SupportedVersions,
+                        %% cert_authorities => CertAuthorities,
+                        %% post_handshake_auth => PostHandshakeAuth,
+                        signature_algs_cert => SignatureAlgorithmsCert
+                       }));
+extensions(?'SSL_v3', client_hello) ->
+    #{};
+extensions(Version, client_hello) ->
+    ?LET({
+          SNI,
+          ECPoitF,
+          ECCurves,
+          ALPN,
+          NextP,
+          SRP
+          %% RenegotiationInfo
+         },
+         {
+          oneof([sni(), undefined]),
+          oneof([ec_point_formats(), undefined]),
+          oneof([elliptic_curves(Version), undefined]), 
+          oneof([alpn(),  undefined]), 
+          oneof([next_protocol_negotiation(), undefined]),
+          oneof([srp(), undefined])
+          %% oneof([renegotiation_info(), undefined])
+         },
+         maps:filter(fun(_, undefined) -> 
+                             false;
+                        (_,_) -> 
+                             true 
+                     end, 
+                     #{
+                       sni => SNI,
+                       ec_point_formats => ECPoitF,
+                       elliptic_curves => ECCurves,
+                       alpn => ALPN,
+                       next_protocol_negotiation => NextP,
+                       srp => SRP
+                       %% renegotiation_info => RenegotiationInfo
+                      }));
+extensions(?'TLS_v1.3' = Version, server_hello) ->
+    ?LET({
+          KeyShare,
+          %% PreSharedKeys,
+          SupportedVersions
+         },
+         {
+          oneof([key_share(server_hello), undefined]),
+          %% oneof([pre_shared_keys(),  undefined]),
+          oneof([server_hello_selected_version()])
+         },
+         maps:filter(fun(_, undefined) ->
+                             false;
+                        (_,_) ->
+                             true
+                     end,
+                     #{
+                       key_share => KeyShare,
+                       %% pre_shared_keys => PreSharedKeys,
+                       server_hello_selected_version => SupportedVersions
+                      }));
+extensions(Version, server_hello) ->
+    ?LET({
+          ECPoitF,
+          ALPN,
+          NextP
+          %% RenegotiationInfo,
+         },
+         {
+          oneof([ec_point_formats(), undefined]),
+          oneof([alpn(),  undefined]),
+          oneof([next_protocol_negotiation(), undefined])
+          %% oneof([renegotiation_info(), undefined]),
+         },
+         maps:filter(fun(_, undefined) ->
+                             false;
+                        (_,_) ->
+                             true
+                     end,
+                     #{
+                       ec_point_formats => ECPoitF,
+                       alpn => ALPN,
+                       next_protocol_negotiation => NextP
+                       %% renegotiation_info => RenegotiationInfo
+                      }));
+extensions(?'TLS_v1.3' = Version, encrypted_extensions) ->
+     ?LET({
+           ServerName,
+           %% MaxFragmentLength,
+           SupportedGroups,
+           %% UseSrtp,
+           %% Heartbeat,
+           ALPN
+           %% ClientCertiticateType,
+           %% ServerCertificateType,
+           %% EarlyData
+          },
+          {
+           oneof([server_name(), undefined]),
+           %% oneof([max_fragment_length(), undefined]),
+           oneof([supported_groups(Version), undefined]),
+           %% oneof([use_srtp(), undefined]),
+           %% oneof([heartbeat(), undefined]),
+           oneof([alpn(), undefined])
+           %% oneof([client_cert_type(), undefined]),
+           %% oneof([server_cert_type(), undefined]),
+           %% oneof([early_data(), undefined])
+          },
+          maps:filter(fun(_, undefined) ->
+                              false;
+                         (_,_) ->
+                              true
+                      end,
+                      #{
+                        sni => ServerName,
+                        %% max_fragment_length => MaxFragmentLength,
+                        elliptic_curves => SupportedGroups,
+                        %% use_srtp => UseSrtp,
+                        %% heartbeat => Heartbeat,
+                        alpn => ALPN
+                        %% client_cert_type => ClientCertificateType,
+                        %% server_cert_type => ServerCertificateType,
+                        %% early_data => EarlyData
+                       })).
+
+server_name() ->
+  ?LET(ServerName, sni(),
+       ServerName).
+    %% sni().
+
+signature_algs_cert() ->
+    ?LET(List,  sig_scheme_list(),
+         #signature_algorithms_cert{signature_scheme_list = List}).
+
+signature_algorithms() ->
+    ?LET(List,  sig_scheme_list(), 
+         #signature_algorithms{signature_scheme_list = List}).
+
+sig_scheme_list() ->
+    oneof([[rsa_pkcs1_sha256],
+           [rsa_pkcs1_sha256, ecdsa_sha1],
+           [rsa_pkcs1_sha256,
+            rsa_pkcs1_sha384,
+            rsa_pkcs1_sha512,
+            ecdsa_secp256r1_sha256,
+            ecdsa_secp384r1_sha384,
+            ecdsa_secp521r1_sha512,
+            rsa_pss_rsae_sha256,
+            rsa_pss_rsae_sha384,
+            rsa_pss_rsae_sha512,
+            rsa_pss_pss_sha256,
+            rsa_pss_pss_sha384,
+            rsa_pss_pss_sha512,
+            rsa_pkcs1_sha1,
+            ecdsa_sha1]
+          ]).
+
+sig_scheme() ->
+    oneof([rsa_pkcs1_sha256,
+            rsa_pkcs1_sha384,
+            rsa_pkcs1_sha512,
+            ecdsa_secp256r1_sha256,
+            ecdsa_secp384r1_sha384,
+            ecdsa_secp521r1_sha512,
+            rsa_pss_rsae_sha256,
+            rsa_pss_rsae_sha384,
+            rsa_pss_rsae_sha512,
+            rsa_pss_pss_sha256,
+            rsa_pss_pss_sha384,
+            rsa_pss_pss_sha512,
+            rsa_pkcs1_sha1,
+            ecdsa_sha1]).
+
+signature() ->
+    <<44,119,215,137,54,84,156,26,121,212,64,173,189,226,
+      191,46,76,89,204,2,78,79,163,228,90,21,89,179,4,198,
+      109,14,52,26,230,22,56,8,170,129,86,0,7,132,245,81,
+      181,131,62,70,79,167,112,85,14,171,175,162,110,29,
+      212,198,45,188,83,176,251,197,224,104,95,74,89,59,
+      26,60,63,79,238,196,137,65,23,199,127,145,176,184,
+      216,3,48,116,172,106,97,83,227,172,246,137,91,79,
+      173,119,169,60,67,1,177,117,9,93,38,86,232,253,73,
+      140,17,147,130,110,136,245,73,10,91,70,105,53,225,
+      158,107,60,190,30,14,26,92,147,221,60,117,104,53,70,
+      142,204,7,131,11,183,192,120,246,243,68,99,147,183,
+      49,149,48,188,8,218,17,150,220,121,2,99,194,140,35,
+      13,249,201,37,216,68,45,87,58,18,10,106,11,132,241,
+      71,170,225,216,197,212,29,107,36,80,189,184,202,56,
+      86,213,45,70,34,74,71,48,137,79,212,194,172,151,57,
+      57,30,126,24,157,198,101,220,84,162,89,105,185,245,
+      76,105,212,176,25,6,148,49,194,106,253,241,212,200,
+      37,154,227,53,49,216,72,82,163>>.
+
+client_hello_versions(?'TLS_v1.3') ->
+    ?LET(SupportedVersions,
+         oneof([[{3,4}],
+                %% This list breaks the property but can be used for negative tests
+                %% [{3,3},{3,4}],
+                [{3,4},{3,3}],
+                [{3,4},{3,3},{3,2},{3,1},{3,0}]
+               ]),
+        #client_hello_versions{versions = SupportedVersions});
+client_hello_versions(_) ->
+    ?LET(SupportedVersions,
+         oneof([[{3,3}],
+                [{3,3},{3,2}],
+                [{3,3},{3,2},{3,1},{3,0}]
+               ]),
+        #client_hello_versions{versions = SupportedVersions}).
+
+server_hello_selected_version() ->
+    #server_hello_selected_version{selected_version = {3,4}}.
+
+request_update() ->
+     oneof([?UPDATE_NOT_REQUESTED, ?UPDATE_REQUESTED]).
+
+certificate_chain()->
+    Conf = cert_conf(),
+    ?LET(Chain, 
+         choose_certificate_chain(Conf),
+         Chain).
+
+choose_certificate_chain(#{server_config := ServerConf,
+                           client_config := ClientConf}) -> 
+    oneof([certificate_chain(ServerConf), certificate_chain(ClientConf)]).
+
+certificate_request_context() ->
+    oneof([<<>>,
+           <<1>>,
+           <<"foobar">>
+          ]).
+certificate_entries([], Acc) ->
+    lists:reverse(Acc);
+certificate_entries([Cert | Rest], Acc) ->
+    certificate_entries(Rest, [certificate_entry(Cert) | Acc]).
+
+certificate_entry(Cert) ->
+    #certificate_entry{data = Cert,
+                       extensions = certificate_entry_extensions()
+                      }.
+certificate_entry_extensions() ->
+    #{}.
+
+certificate_chain(Conf) ->  
+    CAs = proplists:get_value(cacerts, Conf),
+    Cert = proplists:get_value(cert, Conf),
+    %% Middle argument are of correct type but will not be used
+    {ok, _, Chain} = ssl_certificate:certificate_chain(Cert, ets:new(foo, []), make_ref(), CAs), 
+    Chain.
+
+cert_conf()->
+    Hostname = net_adm:localhost(),
+    {ok, #hostent{h_addr_list = [_IP |_]}} = inet:gethostbyname(net_adm:localhost()),
+    public_key:pkix_test_data(#{server_chain => 
+                                    #{root => [{key, ssl_test_lib:hardcode_rsa_key(1)}],
+                                      intermediates => [[{key, ssl_test_lib:hardcode_rsa_key(2)}]],
+                                      peer => [{extensions, [#'Extension'{extnID = 
+                                                                              ?'id-ce-subjectAltName',
+                                                                          extnValue = [{dNSName, Hostname}],
+                                                                          critical = false}]},
+                                               {key, ssl_test_lib:hardcode_rsa_key(3)}
+                                              ]},
+                                client_chain => 
+                                    #{root => [{key, ssl_test_lib:hardcode_rsa_key(4)}],
+                                      intermediates => [[{key, ssl_test_lib:hardcode_rsa_key(5)}]],
+                                      peer => [{key, ssl_test_lib:hardcode_rsa_key(6)}]}}).
+
+certificate_request(Version) ->
+    #certificate_request{certificate_types = certificate_types(Version),
+			 hashsign_algorithms = hashsign_algorithms(Version),
+			 certificate_authorities = certificate_authorities()}.
+
+certificate_types(?'TLS_v1.3') ->
+    iolist_to_binary([<<?BYTE(?ECDSA_SIGN)>>, <<?BYTE(?RSA_SIGN)>>]);
+certificate_types(?'TLS_v1.2') ->
+    iolist_to_binary([<<?BYTE(?ECDSA_SIGN)>>, <<?BYTE(?RSA_SIGN)>>, <<?BYTE(?DSS_SIGN)>>]);
+certificate_types(_) ->
+    iolist_to_binary([<<?BYTE(?ECDSA_SIGN)>>, <<?BYTE(?RSA_SIGN)>>, <<?BYTE(?DSS_SIGN)>>]).
+
+
+
+signature_algs({3,4}) ->
+    ?LET(Algs, signature_algorithms(),
+         Algs);
+signature_algs({3,3} = Version) ->
+        #hash_sign_algos{hash_sign_algos = hash_alg_list(Version)};
+signature_algs(Version) when Version < {3,3} ->
+    undefined.
+
+
+
+hashsign_algorithms({_, N} = Version) when N >= 3 ->                                 
+    #hash_sign_algos{hash_sign_algos = hash_alg_list(Version)};
+hashsign_algorithms(_) -> 
+    undefined.
+
+hash_alg_list(Version) ->
+    ?LET(NumOf, choose(1,15),
+	 ?LET(List, [hash_alg(Version) || _ <- lists:seq(1,NumOf)],
+	      lists:usort(List)
+             )).
+    
+hash_alg(Version) ->
+   ?LET(Alg, sign_algorithm(Version),
+         {hash_algorithm(Version, Alg), Alg}
+       ).
+
+hash_algorithm(?'TLS_v1.3', _) ->
+    oneof([sha, sha224, sha256, sha384, sha512]);
+hash_algorithm(?'TLS_v1.2', rsa) ->
+    oneof([sha, sha224, sha256, sha384, sha512]);
+hash_algorithm(_, rsa) ->
+    oneof([md5, sha, sha224, sha256, sha384, sha512]);
+hash_algorithm(_, ecdsa) ->
+    oneof([sha, sha224, sha256, sha384, sha512]);
+hash_algorithm(_, dsa) ->
+    sha.
+
+sign_algorithm(?'TLS_v1.3') ->
+    oneof([rsa, ecdsa]);
+sign_algorithm(_) ->
+    oneof([rsa, dsa, ecdsa]).
+
+certificate_authorities() ->
+    #{server_config := ServerConf} = cert_conf(), 
+    Authorities = proplists:get_value(cacerts, ServerConf),
+    Enc = fun(#'OTPCertificate'{tbsCertificate=TBSCert}) ->
+		  OTPSubj = TBSCert#'OTPTBSCertificate'.subject,
+		  DNEncodedBin = public_key:pkix_encode('Name', OTPSubj, otp),
+		  DNEncodedLen = byte_size(DNEncodedBin),
+		  <<?UINT16(DNEncodedLen), DNEncodedBin/binary>>
+	  end,
+    list_to_binary([Enc(public_key:pkix_decode_cert(DERCert, otp)) || DERCert <- Authorities]).
+
+digest_size()->
+   oneof([160,224,256,384,512]).
+
+key_share_entry() ->
+    undefined.
+    %%#key_share_entry{}.
+
+server_hello_selected_version(Version) ->
+    #server_hello_selected_version{selected_version = Version}.
+
+sni() ->
+    #sni{hostname = net_adm:localhost()}.
+
+ec_point_formats() ->
+    #ec_point_formats{ec_point_format_list = ec_point_format_list()}.
+ 
+ec_point_format_list() ->
+    [?ECPOINT_UNCOMPRESSED].
+
+elliptic_curves({_, Minor}) when Minor < 4 ->
+    Curves = tls_v1:ecc_curves(Minor),
+    #elliptic_curves{elliptic_curve_list = Curves}.
+
+%% RFC 8446 (TLS 1.3) renamed the "elliptic_curve" extension.
+supported_groups({_, Minor}) when Minor >= 4 ->
+    SupportedGroups = tls_v1:groups(Minor),
+    #supported_groups{supported_groups = SupportedGroups}.
+
+
+alpn() ->
+    ?LET(ExtD,  alpn_protocols(), #alpn{extension_data = ExtD}).
+
+alpn_protocols() ->
+    oneof([<<"spdy/2">>, <<"spdy/3">>, <<"http/2">>, <<"http/1.0">>, <<"http/1.1">>]).
+    
+next_protocol_negotiation() ->
+   %% Predecessor to APLN
+    ?LET(ExtD,  alpn_protocols(), #next_protocol_negotiation{extension_data = ExtD}).
+
+srp() ->
+   ?LET(Name, gen_name(),  #srp{username = list_to_binary(Name)}).
+
+renegotiation_info() ->
+    #renegotiation_info{renegotiated_connection = 0}.
+
+gen_name() -> 
+    ?LET(Size, choose(1,10), gen_string(Size)).
+
+gen_char() -> 
+    choose($a,$z).
+
+gen_string(N) ->
+    gen_string(N, []).
+
+gen_string(0, Acc) ->
+    Acc;
+gen_string(N, Acc) ->
+    ?LET(Char, gen_char(), gen_string(N-1, [Char | Acc])).
+
+key_share(client_hello) ->
+    ?LET(ClientShares, key_share_entry_list(),
+        #key_share_client_hello{
+          client_shares = ClientShares});
+key_share(server_hello) ->
+    ?LET([ServerShare], key_share_entry_list(1),
+        #key_share_server_hello{
+          server_share = ServerShare}).
+
+key_share_entry_list() ->
+    Max = length(ssl:groups()),
+    ?LET(Size, choose(1,Max), key_share_entry_list(Size)).
+%%
+key_share_entry_list(N) ->
+    key_share_entry_list(N, ssl:groups(), []).
+%%
+key_share_entry_list(0, _Pool, Acc) ->
+    Acc;
+key_share_entry_list(N, Pool, Acc) ->
+    R = rand:uniform(length(Pool)),
+    G = lists:nth(R, Pool),
+    P = generate_public_key(G),
+    KeyShareEntry =
+        #key_share_entry{
+          group = G,
+          key_exchange = P},
+    key_share_entry_list(N - 1, Pool -- [G], [KeyShareEntry|Acc]).
+
+%% TODO: fix curve generation
+generate_public_key(Group)
+  when Group =:= secp256r1 orelse
+       Group =:= secp384r1 orelse
+       Group =:= secp521r1 orelse
+       Group =:= x448 orelse
+       Group =:= x25519 ->
+    #'ECPrivateKey'{publicKey = PublicKey} =
+        public_key:generate_key({namedCurve, secp256r1}),
+    PublicKey;
+generate_public_key(Group) ->
+    {PublicKey, _} =
+        public_key:generate_key(ssl_dh_groups:dh_params(Group)),
+    PublicKey.
+
+groups() ->
+    Max = length(ssl:groups()),
+    ?LET(Size, choose(1,Max), group_list(Size)).
+
+group_list(N) ->
+    group_list(N, ssl:groups(), []).
+%%
+group_list(0, _Pool, Acc) ->
+    Acc;
+group_list(N, Pool, Acc) ->
+    R = rand:uniform(length(Pool)),
+    G = lists:nth(R, Pool),
+    group_list(N - 1, Pool -- [G], [G|Acc]).
diff --git a/lib/ssl/test/ssl.spec b/lib/ssl/test/ssl.spec
index cb54168d36..15587abecd 100644
--- a/lib/ssl/test/ssl.spec
+++ b/lib/ssl/test/ssl.spec
@@ -1,4 +1,12 @@
-{suites,"../ssl_test",all}.
-{skip_suites, "../ssl_test",
-     [ssl_bench_SUITE, ssl_dist_bench_SUITE],
-     "Benchmarks run separately"}.
+% {merge_tests,false}.
+{alias,dir,"../ssl_test"}.
+
+{suites,dir,all}.
+{skip_groups,dir,ssl_bench_SUITE,setup,"Benchmarks run separately"}.
+{skip_groups,dir,ssl_bench_SUITE,payload,"Benchmarks run separately"}.
+{skip_groups,dir,ssl_bench_SUITE,pem_cache,"Benchmarks run separately"}.
+{skip_groups,dir,ssl_dist_bench_SUITE,setup,"Benchmarks run separately"}.
+{skip_groups,dir,ssl_dist_bench_SUITE,roundtrip,"Benchmarks run separately"}.
+{skip_groups,dir,ssl_dist_bench_SUITE,throughput,"Benchmarks run separately"}.
+{skip_groups,dir,ssl_dist_bench_SUITE,sched_utilization,"Benchmarks run separately"}.
+
diff --git a/lib/ssl/test/ssl_ECC_SUITE.erl b/lib/ssl/test/ssl_ECC_SUITE.erl
index a5309e866b..ca8d0ec70c 100644
--- a/lib/ssl/test/ssl_ECC_SUITE.erl
+++ b/lib/ssl/test/ssl_ECC_SUITE.erl
@@ -212,53 +212,61 @@ client_ecdsa_server_ecdsa_with_raw_key(Config)  when is_list(Config) ->
 
 ecc_default_order(Config) ->
     Default = ssl_test_lib:default_cert_chain_conf(),
+    DefaultCurve = pubkey_cert_records:namedCurves(hd(tls_v1:ecc_curves(0))),
     {COpts0, SOpts0} = ssl_test_lib:make_ec_cert_chains([{server_chain, Default}, 
                                                          {client_chain, Default}],
-                                                        ecdhe_ecdsa, ecdhe_ecdsa, Config),   
+                                                        ecdhe_ecdsa, ecdhe_ecdsa,
+                                                        Config, DefaultCurve),
     COpts = ssl_test_lib:ssl_options(COpts0, Config), 
     SOpts = ssl_test_lib:ssl_options(SOpts0, Config),
     ECCOpts = [],
-    case ssl_test_lib:supported_eccs([{eccs, [sect571r1]}]) of
-        true ->  ssl_test_lib:ecc_test(sect571r1, COpts, SOpts, [], ECCOpts, Config);
+    case ssl_test_lib:supported_eccs([{eccs, [DefaultCurve]}]) of
+        true ->  ssl_test_lib:ecc_test(DefaultCurve, COpts, SOpts, [], ECCOpts, Config);
         false -> {skip, "unsupported named curves"}
      end.
 
 ecc_default_order_custom_curves(Config) ->
     Default = ssl_test_lib:default_cert_chain_conf(),
+    DefaultCurve = pubkey_cert_records:namedCurves(hd(tls_v1:ecc_curves(0))),
     {COpts0, SOpts0} = ssl_test_lib:make_ec_cert_chains([{server_chain, Default}, 
                                                          {client_chain, Default}],
-                                                        ecdhe_ecdsa, ecdhe_ecdsa, Config),   
+                                                        ecdhe_ecdsa, ecdhe_ecdsa,
+                                                        Config, DefaultCurve),
     COpts = ssl_test_lib:ssl_options(COpts0, Config), 
     SOpts = ssl_test_lib:ssl_options(SOpts0, Config),
-    ECCOpts = [{eccs, [secp256r1, sect571r1]}],
+    ECCOpts = [{eccs, [secp256r1, DefaultCurve]}],
     case ssl_test_lib:supported_eccs(ECCOpts) of
-         true ->  ssl_test_lib:ecc_test(sect571r1, COpts, SOpts, [], ECCOpts, Config);
+         true ->  ssl_test_lib:ecc_test(DefaultCurve, COpts, SOpts, [], ECCOpts, Config);
         false -> {skip, "unsupported named curves"}
     end.
 
 ecc_client_order(Config) ->
     Default = ssl_test_lib:default_cert_chain_conf(),
+    DefaultCurve = pubkey_cert_records:namedCurves(hd(tls_v1:ecc_curves(0))),
     {COpts0, SOpts0} = ssl_test_lib:make_ec_cert_chains([{server_chain, Default}, 
                                                          {client_chain, Default}],
-                                                        ecdhe_ecdsa, ecdhe_ecdsa, Config),   
+                                                        ecdhe_ecdsa, ecdhe_ecdsa,
+                                                        Config, DefaultCurve),
     COpts = ssl_test_lib:ssl_options(COpts0, Config), 
     SOpts = ssl_test_lib:ssl_options(SOpts0, Config),
     ECCOpts = [{honor_ecc_order, false}],
-    case ssl_test_lib:supported_eccs([{eccs, [sect571r1]}]) of
-         true -> ssl_test_lib:ecc_test(sect571r1, COpts, SOpts, [], ECCOpts, Config);
+    case ssl_test_lib:supported_eccs([{eccs, [DefaultCurve]}]) of
+         true -> ssl_test_lib:ecc_test(DefaultCurve, COpts, SOpts, [], ECCOpts, Config);
         false -> {skip, "unsupported named curves"}
     end.
 
 ecc_client_order_custom_curves(Config) ->
     Default = ssl_test_lib:default_cert_chain_conf(),
+    DefaultCurve = pubkey_cert_records:namedCurves(hd(tls_v1:ecc_curves(0))),
     {COpts0, SOpts0} = ssl_test_lib:make_ec_cert_chains([{server_chain, Default},
                                                         {client_chain, Default}],
-                                                      ecdhe_ecdsa, ecdhe_ecdsa, Config),   
+                                                        ecdhe_ecdsa, ecdhe_ecdsa,
+                                                        Config, DefaultCurve),
     COpts = ssl_test_lib:ssl_options(COpts0, Config), 
     SOpts = ssl_test_lib:ssl_options(SOpts0, Config),
-    ECCOpts = [{honor_ecc_order, false}, {eccs, [secp256r1, sect571r1]}],
+    ECCOpts = [{honor_ecc_order, false}, {eccs, [secp256r1, DefaultCurve]}],
     case ssl_test_lib:supported_eccs(ECCOpts) of
-        true -> ssl_test_lib:ecc_test(sect571r1, COpts, SOpts, [], ECCOpts, Config);
+        true -> ssl_test_lib:ecc_test(DefaultCurve, COpts, SOpts, [], ECCOpts, Config);
         false -> {skip, "unsupported named curves"}
     end.
 
@@ -274,12 +282,13 @@ ecc_unknown_curve(Config) ->
 
 client_ecdh_rsa_server_ecdhe_ecdsa_server_custom(Config) ->
     Default = ssl_test_lib:default_cert_chain_conf(),
+    DefaultCurve = pubkey_cert_records:namedCurves(hd(tls_v1:ecc_curves(0))),
     {COpts0, SOpts0} = ssl_test_lib:make_ec_cert_chains([{server_chain, Default},
                                                        {client_chain, Default}], 
                                                         ecdh_rsa, ecdhe_ecdsa, Config),
     COpts = ssl_test_lib:ssl_options(COpts0, Config), 
     SOpts = ssl_test_lib:ssl_options(SOpts0, Config),
-    ECCOpts = [{honor_ecc_order, true}, {eccs, [secp256r1, sect571r1]}],
+    ECCOpts = [{honor_ecc_order, true}, {eccs, [secp256r1, DefaultCurve]}],
      case ssl_test_lib:supported_eccs(ECCOpts) of
          true -> ssl_test_lib:ecc_test(secp256r1, COpts, SOpts, [], ECCOpts, Config);
          false -> {skip, "unsupported named curves"}
@@ -287,12 +296,13 @@ client_ecdh_rsa_server_ecdhe_ecdsa_server_custom(Config) ->
 
 client_ecdh_rsa_server_ecdhe_rsa_server_custom(Config) ->
     Default = ssl_test_lib:default_cert_chain_conf(),
+    DefaultCurve = pubkey_cert_records:namedCurves(hd(tls_v1:ecc_curves(0))),
     {COpts0, SOpts0} = ssl_test_lib:make_ec_cert_chains([{server_chain, Default}, 
                                                          {client_chain, Default}],
                                                         ecdh_rsa, ecdhe_rsa, Config),
     COpts = ssl_test_lib:ssl_options(COpts0, Config), 
     SOpts = ssl_test_lib:ssl_options(SOpts0, Config),
-     ECCOpts = [{honor_ecc_order, true}, {eccs, [secp256r1, sect571r1]}],
+    ECCOpts = [{honor_ecc_order, true}, {eccs, [secp256r1, DefaultCurve]}],
     
     case ssl_test_lib:supported_eccs(ECCOpts) of
         true -> ssl_test_lib:ecc_test(secp256r1, COpts, SOpts, [], ECCOpts, Config);
@@ -301,12 +311,13 @@ client_ecdh_rsa_server_ecdhe_rsa_server_custom(Config) ->
 
 client_ecdhe_rsa_server_ecdhe_ecdsa_server_custom(Config) ->
     Default = ssl_test_lib:default_cert_chain_conf(),
+    DefaultCurve = pubkey_cert_records:namedCurves(hd(tls_v1:ecc_curves(0))),
     {COpts0, SOpts0} = ssl_test_lib:make_ec_cert_chains([{server_chain, Default}, 
                                                          {client_chain, Default}],
                                                         ecdhe_rsa, ecdhe_ecdsa, Config),
     COpts = ssl_test_lib:ssl_options(COpts0, Config), 
     SOpts = ssl_test_lib:ssl_options(SOpts0, Config),
-    ECCOpts = [{honor_ecc_order, true}, {eccs, [secp256r1, sect571r1]}],
+    ECCOpts = [{honor_ecc_order, true}, {eccs, [secp256r1, DefaultCurve]}],
     case ssl_test_lib:supported_eccs(ECCOpts) of
          true -> ssl_test_lib:ecc_test(secp256r1, COpts, SOpts, [], ECCOpts, Config);
         false -> {skip, "unsupported named curves"}
@@ -314,19 +325,21 @@ client_ecdhe_rsa_server_ecdhe_ecdsa_server_custom(Config) ->
 
 client_ecdhe_rsa_server_ecdhe_rsa_server_custom(Config) ->
     Default = ssl_test_lib:default_cert_chain_conf(),
+    DefaultCurve = pubkey_cert_records:namedCurves(hd(tls_v1:ecc_curves(0))),
     {COpts0, SOpts0} = ssl_test_lib:make_ec_cert_chains([{server_chain, Default}, 
                                                          {client_chain, Default}], 
                                                         ecdhe_rsa, ecdhe_rsa, Config),
 
     COpts = ssl_test_lib:ssl_options(COpts0, Config), 
     SOpts = ssl_test_lib:ssl_options(SOpts0, Config),
-    ECCOpts = [{honor_ecc_order, true}, {eccs, [secp256r1, sect571r1]}],
+    ECCOpts = [{honor_ecc_order, true}, {eccs, [secp256r1, DefaultCurve]}],
     case ssl_test_lib:supported_eccs(ECCOpts) of
         true -> ssl_test_lib:ecc_test(secp256r1, COpts, SOpts, [], ECCOpts, Config);
         false -> {skip, "unsupported named curves"}
      end.
 client_ecdhe_rsa_server_ecdh_rsa_server_custom(Config) ->
     Default = ssl_test_lib:default_cert_chain_conf(),
+    DefaultCurve = pubkey_cert_records:namedCurves(hd(tls_v1:ecc_curves(0))),
     Ext = x509_test:extensions([{key_usage, [keyEncipherment]}]),
     {COpts0, SOpts0} = ssl_test_lib:make_ec_cert_chains([{server_chain, [[], [], [{extensions, Ext}]]},
                                                          {client_chain, Default}], 
@@ -334,8 +347,8 @@ client_ecdhe_rsa_server_ecdh_rsa_server_custom(Config) ->
 
     COpts = ssl_test_lib:ssl_options(COpts0, Config), 
     SOpts = ssl_test_lib:ssl_options(SOpts0, Config),
-    ECCOpts = [{honor_ecc_order, true}, {eccs, [secp256r1, sect571r1]}],
-    Expected = pubkey_cert_records:namedCurves(hd(tls_v1:ecc_curves(0))), %% The certificate curve
+    ECCOpts = [{honor_ecc_order, true}, {eccs, [secp256r1, DefaultCurve]}],
+    Expected = secp256r1, %% The certificate curve
 
     case ssl_test_lib:supported_eccs(ECCOpts) of
         true -> ssl_test_lib:ecc_test(Expected, COpts, SOpts, [], ECCOpts, Config);
@@ -344,12 +357,13 @@ client_ecdhe_rsa_server_ecdh_rsa_server_custom(Config) ->
 
 client_ecdhe_ecdsa_server_ecdhe_ecdsa_server_custom(Config) ->
     Default = ssl_test_lib:default_cert_chain_conf(),
+    DefaultCurve = pubkey_cert_records:namedCurves(hd(tls_v1:ecc_curves(0))),
     {COpts0, SOpts0} = ssl_test_lib:make_ec_cert_chains([{server_chain, Default}, 
                                                        {client_chain, Default}], 
                                                         ecdhe_ecdsa, ecdhe_ecdsa, Config),
     COpts = ssl_test_lib:ssl_options(COpts0, Config), 
     SOpts = ssl_test_lib:ssl_options(SOpts0, Config),
-    ECCOpts = [{honor_ecc_order, true}, {eccs, [secp256r1, sect571r1]}],
+    ECCOpts = [{honor_ecc_order, true}, {eccs, [secp256r1, DefaultCurve]}],
     case ssl_test_lib:supported_eccs(ECCOpts) of
         true -> ssl_test_lib:ecc_test(secp256r1, COpts, SOpts, [], ECCOpts, Config);
         false -> {skip, "unsupported named curves"}
@@ -357,12 +371,13 @@ client_ecdhe_ecdsa_server_ecdhe_ecdsa_server_custom(Config) ->
 
 client_ecdhe_ecdsa_server_ecdhe_rsa_server_custom(Config) ->
     Default = ssl_test_lib:default_cert_chain_conf(),
+    DefaultCurve = pubkey_cert_records:namedCurves(hd(tls_v1:ecc_curves(0))),
     {COpts0, SOpts0} = ssl_test_lib:make_ec_cert_chains([{server_chain, Default}, 
                                                          {client_chain, Default}],
                                                         ecdhe_ecdsa, ecdhe_rsa, Config),
     COpts = ssl_test_lib:ssl_options(COpts0, Config), 
     SOpts = ssl_test_lib:ssl_options(SOpts0, Config),
-    ECCOpts = [{honor_ecc_order, true}, {eccs, [secp256r1, sect571r1]}],
+    ECCOpts = [{honor_ecc_order, true}, {eccs, [secp256r1, DefaultCurve]}],
     case ssl_test_lib:supported_eccs(ECCOpts) of
         true -> ssl_test_lib:ecc_test(secp256r1, COpts, SOpts, [], ECCOpts, Config);
         false -> {skip, "unsupported named curves"}
@@ -370,12 +385,13 @@ client_ecdhe_ecdsa_server_ecdhe_rsa_server_custom(Config) ->
 
 client_ecdhe_ecdsa_server_ecdhe_ecdsa_client_custom(Config) ->
     Default = ssl_test_lib:default_cert_chain_conf(),
+    DefaultCurve = pubkey_cert_records:namedCurves(hd(tls_v1:ecc_curves(0))),
     {COpts0, SOpts0} = ssl_test_lib:make_ec_cert_chains([{server_chain, Default}, 
                                                        {client_chain, Default}],
                                                         ecdhe_ecdsa, ecdhe_ecdsa, Config),
     COpts = ssl_test_lib:ssl_options(COpts0, Config), 
     SOpts = ssl_test_lib:ssl_options(SOpts0, Config),
-    ECCOpts = [{eccs, [secp256r1, sect571r1]}],
+    ECCOpts = [{eccs, [secp256r1, DefaultCurve]}],
     case ssl_test_lib:supported_eccs(ECCOpts) of
         true -> ssl_test_lib:ecc_test(secp256r1, COpts, SOpts, ECCOpts, [], Config);
         false -> {skip, "unsupported named curves"}
@@ -383,12 +399,13 @@ client_ecdhe_ecdsa_server_ecdhe_ecdsa_client_custom(Config) ->
 
 client_ecdhe_rsa_server_ecdhe_ecdsa_client_custom(Config) ->
     Default = ssl_test_lib:default_cert_chain_conf(),
+    DefaultCurve = pubkey_cert_records:namedCurves(hd(tls_v1:ecc_curves(0))),
     {COpts0, SOpts0} = ssl_test_lib:make_ec_cert_chains([{server_chain, Default}, 
                                                          {client_chain, Default}],
                                                          ecdhe_rsa, ecdhe_ecdsa, Config),
     COpts = ssl_test_lib:ssl_options(COpts0, Config), 
     SOpts = ssl_test_lib:ssl_options(SOpts0, Config),
-    ECCOpts = [{eccs, [secp256r1, sect571r1]}],
+    ECCOpts = [{eccs, [secp256r1, DefaultCurve]}],
     case ssl_test_lib:supported_eccs(ECCOpts) of
         true -> ssl_test_lib:ecc_test(secp256r1, COpts, SOpts, ECCOpts, [], Config);
         false -> {skip, "unsupported named curves"}
diff --git a/lib/ssl/test/ssl_alpn_handshake_SUITE.erl b/lib/ssl/test/ssl_alpn_handshake_SUITE.erl
index 04c4b257d9..dfc780479e 100644
--- a/lib/ssl/test/ssl_alpn_handshake_SUITE.erl
+++ b/lib/ssl/test/ssl_alpn_handshake_SUITE.erl
@@ -153,41 +153,41 @@ protocols_must_be_a_binary_list(Config) when is_list(Config) ->
 
 empty_client(Config) when is_list(Config) ->
     run_failing_handshake(Config,
-        [{alpn_advertised_protocols, []}],
-        [{alpn_preferred_protocols, [<<"spdy/2">>, <<"spdy/3">>, <<"http/2">>]}],
-        {error,{tls_alert,"no application protocol"}}).
+                          [{alpn_advertised_protocols, []}],
+                          [{alpn_preferred_protocols, [<<"spdy/2">>, <<"spdy/3">>, <<"http/2">>]}],
+                          no_application_protocol).
 
 %--------------------------------------------------------------------------------
 
 empty_server(Config) when is_list(Config) ->
     run_failing_handshake(Config,
-        [{alpn_advertised_protocols, [<<"http/1.0">>, <<"http/1.1">>]}],
-        [{alpn_preferred_protocols, []}],
-        {error,{tls_alert,"no application protocol"}}).
+                          [{alpn_advertised_protocols, [<<"http/1.0">>, <<"http/1.1">>]}],
+                          [{alpn_preferred_protocols, []}],
+                          no_application_protocol).
 
 %--------------------------------------------------------------------------------
 
 empty_client_empty_server(Config) when is_list(Config) ->
     run_failing_handshake(Config,
-        [{alpn_advertised_protocols, []}],
-        [{alpn_preferred_protocols, []}],
-        {error,{tls_alert,"no application protocol"}}).
+                          [{alpn_advertised_protocols, []}],
+                          [{alpn_preferred_protocols, []}],
+                          no_application_protocol).
 
 %--------------------------------------------------------------------------------
 
 no_matching_protocol(Config) when is_list(Config) ->
     run_failing_handshake(Config,
-        [{alpn_advertised_protocols, [<<"http/1.0">>, <<"http/1.1">>]}],
-        [{alpn_preferred_protocols, [<<"spdy/2">>, <<"spdy/3">>, <<"http/2">>]}],
-        {error,{tls_alert,"no application protocol"}}).
+                          [{alpn_advertised_protocols, [<<"http/1.0">>, <<"http/1.1">>]}],
+                          [{alpn_preferred_protocols, [<<"spdy/2">>, <<"spdy/3">>, <<"http/2">>]}],
+                          no_application_protocol).
 
 %--------------------------------------------------------------------------------
 
 client_alpn_and_server_alpn(Config) when is_list(Config) ->
     run_handshake(Config,
-		    [{alpn_advertised_protocols, [<<"http/1.0">>, <<"http/1.1">>]}],
-		    [{alpn_preferred_protocols, [<<"spdy/2">>, <<"http/1.1">>, <<"http/1.0">>]}],
-		    {ok, <<"http/1.1">>}).
+                  [{alpn_advertised_protocols, [<<"http/1.0">>, <<"http/1.1">>]}],
+                  [{alpn_preferred_protocols, [<<"spdy/2">>, <<"http/1.1">>, <<"http/1.0">>]}],
+                  {ok, <<"http/1.1">>}).
 
 %--------------------------------------------------------------------------------
 
@@ -262,52 +262,12 @@ client_renegotiate(Config) when is_list(Config) ->
 %--------------------------------------------------------------------------------
 
 session_reused(Config) when  is_list(Config)->
-    ClientOpts0 = ssl_test_lib:ssl_options(client_rsa_opts, Config),
+    ClientOpts0 = ssl_test_lib:ssl_options(client_rsa_verify_opts, Config),
     ClientOpts = [{alpn_advertised_protocols, [<<"http/1.0">>]}] ++ ClientOpts0,
     ServerOpts0 = ssl_test_lib:ssl_options(server_rsa_opts, Config),
     ServerOpts = [{alpn_preferred_protocols, [<<"spdy/2">>, <<"http/1.1">>, <<"http/1.0">>]}] ++  ServerOpts0,
 
-    {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
-    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0},
-                    {from, self()},
-                    {mfa, {ssl_test_lib, session_info_result, []}},
-					{options, ServerOpts}]),
-
-    Port = ssl_test_lib:inet_port(Server),
-    Client = ssl_test_lib:start_client([{node, ClientNode}, {port, Port},
-               {host, Hostname},
-               {from, self()},
-               {mfa, {ssl_test_lib, no_result_msg, []}},
-               {options, ClientOpts}]),
-
-    SessionInfo = 
-	receive
-	    {Server, Info} ->
-		Info
-	end,
-        
-    Server ! {listen, {mfa, {ssl_test_lib, no_result, []}}},
-    
-    %% Make sure session is registered
-    ct:sleep(?SLEEP),
-
-    Client1 =
-	ssl_test_lib:start_client([{node, ClientNode},
-				   {port, Port}, {host, Hostname},
-				   {mfa, {ssl_test_lib, session_info_result, []}},
-				   {from, self()},  {options, ClientOpts}]),
-
-      receive
-	{Client1, SessionInfo} ->
-	    ok;
-	{Client1, Other} ->
-	    ct:fail(Other)
-      end,
-    
-    ssl_test_lib:close(Server), 
-    ssl_test_lib:close(Client),
-    ssl_test_lib:close(Client1).
-
+    ssl_test_lib:reuse_session(ClientOpts, ServerOpts, Config).
 %--------------------------------------------------------------------------------
 
 alpn_not_supported_client(Config) when is_list(Config) ->
@@ -337,7 +297,7 @@ alpn_not_supported_server(Config) when is_list(Config)->
 %% Internal functions ------------------------------------------------
 %%--------------------------------------------------------------------
 
-run_failing_handshake(Config, ClientExtraOpts, ServerExtraOpts, ExpectedResult) ->
+run_failing_handshake(Config, ClientExtraOpts, ServerExtraOpts, ExpectedAlert) ->
     ClientOpts = ClientExtraOpts ++ ssl_test_lib:ssl_options(client_rsa_opts, Config),
     ServerOpts = ServerExtraOpts ++ ssl_test_lib:ssl_options(server_rsa_opts, Config),
 
@@ -353,8 +313,7 @@ run_failing_handshake(Config, ClientExtraOpts, ServerExtraOpts, ExpectedResult)
                                            {from, self()},
                                            {mfa, {?MODULE, placeholder, []}},
                                            {options, ClientOpts}]),
-    ssl_test_lib:check_result(Server, ExpectedResult,
-                              Client, ExpectedResult).
+    ssl_test_lib:check_client_alert(Server, Client, ExpectedAlert).
 
 run_handshake(Config, ClientExtraOpts, ServerExtraOpts, ExpectedProtocol) ->
     Data = "hello world",
diff --git a/lib/ssl/test/ssl_basic_SUITE.erl b/lib/ssl/test/ssl_basic_SUITE.erl
index 9633800da5..03ee97de5d 100644
--- a/lib/ssl/test/ssl_basic_SUITE.erl
+++ b/lib/ssl/test/ssl_basic_SUITE.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2007-2018. All Rights Reserved.
+%% Copyright Ericsson AB 2007-2019. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -29,6 +29,7 @@
 -include_lib("public_key/include/public_key.hrl").
 
 -include("ssl_api.hrl").
+-include("ssl_cipher.hrl").
 -include("ssl_internal.hrl").
 -include("ssl_alert.hrl").
 -include("ssl_internal.hrl").
@@ -53,7 +54,8 @@ all() ->
      {group, options_tls},
      {group, session},
      {group, 'dtlsv1.2'},
-     {group, 'dtlsv1'}, 
+     {group, 'dtlsv1'},
+     {group, 'tlsv1.3'},
      {group, 'tlsv1.2'},
      {group, 'tlsv1.1'},
      {group, 'tlsv1'},
@@ -67,17 +69,16 @@ groups() ->
      {options_tls, [], options_tests_tls()},
      {'dtlsv1.2', [], all_versions_groups()},
      {'dtlsv1', [], all_versions_groups()},
+     {'tlsv1.3', [], tls13_test_group()},
      {'tlsv1.2', [], all_versions_groups() ++ tls_versions_groups() ++ [conf_signature_algs, no_common_signature_algs]},
      {'tlsv1.1', [], all_versions_groups() ++ tls_versions_groups()},
      {'tlsv1', [], all_versions_groups() ++ tls_versions_groups() ++ rizzo_tests()},
      {'sslv3', [], all_versions_groups() ++ tls_versions_groups() ++ rizzo_tests() ++ [tls_ciphersuite_vs_version]},
      {api,[], api_tests()},
      {api_tls,[], api_tests_tls()},
-     {tls_ciphers,[], tls_cipher_tests()},
      {session, [], session_tests()},
      {renegotiate, [], renegotiate_tests()},
      {ciphers, [], cipher_tests()},
-     {ciphers_ec, [], cipher_tests_ec()},
      {error_handling_tests, [], error_handling_tests()},
      {error_handling_tests_tls, [], error_handling_tests_tls()}
     ].
@@ -85,14 +86,12 @@ groups() ->
 tls_versions_groups ()->
     [
      {group, api_tls},
-     {group, tls_ciphers},
      {group, error_handling_tests_tls}].
 
 all_versions_groups ()->
     [{group, api},
      {group, renegotiate},
      {group, ciphers},
-     {group, ciphers_ec},
      {group, error_handling_tests}].
 
 
@@ -164,8 +163,10 @@ api_tests() ->
      accept_pool,
      prf,
      socket_options,
+     active_n,
      cipher_suites,
      handshake_continue,
+     handshake_continue_timeout,
      hello_client_cancel,
      hello_server_cancel
     ].
@@ -206,42 +207,16 @@ renegotiate_tests() ->
      renegotiate_dos_mitigate_passive,
      renegotiate_dos_mitigate_absolute].
 
-tls_cipher_tests() ->
-    [rc4_rsa_cipher_suites,
-     rc4_ecdh_rsa_cipher_suites,
-     rc4_ecdsa_cipher_suites].
-
 cipher_tests() ->
     [old_cipher_suites,
-     cipher_suites_mix,
-     ciphers_rsa_signed_certs,
-     ciphers_rsa_signed_certs_openssl_names,
-     ciphers_dsa_signed_certs,
-     ciphers_dsa_signed_certs_openssl_names,
-     chacha_rsa_cipher_suites,
-     chacha_ecdsa_cipher_suites,
-     anonymous_cipher_suites,
-     psk_cipher_suites,
-     psk_with_hint_cipher_suites,
-     psk_anon_cipher_suites,
-     psk_anon_with_hint_cipher_suites,
-     srp_cipher_suites,
-     srp_anon_cipher_suites,
-     srp_dsa_cipher_suites,
-     des_rsa_cipher_suites,
-     des_ecdh_rsa_cipher_suites,
+     cipher_suites_mix,     
      default_reject_anonymous].
 
-cipher_tests_ec() ->
-    [ciphers_ecdsa_signed_certs,
-     ciphers_ecdsa_signed_certs_openssl_names,
-     ciphers_ecdh_rsa_signed_certs,
-     ciphers_ecdh_rsa_signed_certs_openssl_names].
-
 error_handling_tests()->
     [close_transport_accept,
      recv_active,
      recv_active_once,
+     recv_active_n,
      recv_error_handling,
      call_in_error_state,
      close_in_error_state,
@@ -266,6 +241,26 @@ rizzo_tests() ->
      rizzo_zero_n,
      rizzo_disabled].
 
+%% For testing TLS 1.3 features and possible regressions
+tls13_test_group() ->
+    [tls13_enable_client_side,
+     tls13_enable_server_side,
+     tls_record_1_3_encode_decode,
+     tls13_finished_verify_data,
+     tls13_1_RTT_handshake,
+     tls13_basic_ssl_server_openssl_client,
+     tls13_custom_groups_ssl_server_openssl_client,
+     tls13_hello_retry_request_ssl_server_openssl_client,
+     tls13_client_auth_empty_cert_alert_ssl_server_openssl_client,
+     tls13_client_auth_empty_cert_ssl_server_openssl_client,
+     tls13_client_auth_ssl_server_openssl_client,
+     tls13_hrr_client_auth_empty_cert_alert_ssl_server_openssl_client,
+     tls13_hrr_client_auth_empty_cert_ssl_server_openssl_client,
+     tls13_hrr_client_auth_ssl_server_openssl_client,
+     tls13_unsupported_sign_algo_client_auth_ssl_server_openssl_client,
+     tls13_unsupported_sign_algo_cert_client_auth_ssl_server_openssl_client,
+     tls13_connection_information].
+
 %%--------------------------------------------------------------------
 init_per_suite(Config0) ->
     catch crypto:stop(),
@@ -295,7 +290,8 @@ init_per_group(GroupName, Config) when GroupName == basic_tls;
                                        GroupName == options;
                                        GroupName == basic;
                                        GroupName == session;
-                                       GroupName == error_handling_tests_tls
+                                       GroupName == error_handling_tests_tls;
+                                       GroupName == tls13_test_group
                                        ->
     ssl_test_lib:clean_tls_version(Config);                          
 init_per_group(GroupName, Config) ->
@@ -383,26 +379,7 @@ init_per_testcase(TestCase, Config) when TestCase == client_renegotiate;
     ct:timetrap({seconds, ?SEC_RENEGOTIATION_TIMEOUT + 5}),
     Config;
 
-init_per_testcase(TestCase, Config) when TestCase == psk_cipher_suites;
-					 TestCase == psk_with_hint_cipher_suites;
-					 TestCase == ciphers_rsa_signed_certs;
-					 TestCase == ciphers_rsa_signed_certs_openssl_names;
-                                         TestCase == ciphers_ecdh_rsa_signed_certs_openssl_names;
-                                         TestCase == ciphers_ecdh_rsa_signed_certs;                           
-					 TestCase == ciphers_dsa_signed_certs;
-					 TestCase == ciphers_dsa_signed_certs_openssl_names;
-					 TestCase == anonymous_cipher_suites;
-					 TestCase == ciphers_ecdsa_signed_certs;
-					 TestCase == ciphers_ecdsa_signed_certs_openssl_names;
-					 TestCase == anonymous_cipher_suites;
-					 TestCase == psk_anon_cipher_suites;
-					 TestCase == psk_anon_with_hint_cipher_suites;
-                                         TestCase == srp_cipher_suites;
-                                         TestCase == srp_anon_cipher_suites;
-                                         TestCase == srp_dsa_cipher_suites;
-                                         TestCase == des_rsa_cipher_suites;
-                                         TestCase == des_ecdh_rsa_cipher_suites;
-					 TestCase == versions_option;
+init_per_testcase(TestCase, Config) when TestCase == versions_option;
 					 TestCase == tls_tcp_connect_big ->
     ssl_test_lib:ct_log_supported_protocol_versions(Config),
     ct:timetrap({seconds, 60}),
@@ -654,8 +631,8 @@ new_options_in_accept(Config) when is_list(Config) ->
 handshake_continue() ->
     [{doc, "Test API function ssl:handshake_continue/3"}].
 handshake_continue(Config) when is_list(Config) -> 
-    ClientOpts = ssl_test_lib:ssl_options(client_verification_opts, Config),
-    ServerOpts = ssl_test_lib:ssl_options(server_verification_opts, Config),
+    ClientOpts = ssl_test_lib:ssl_options(client_rsa_verify_opts, Config),
+    ServerOpts = ssl_test_lib:ssl_options(server_rsa_verify_opts, Config),
     {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
 
     Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0}, 
@@ -681,6 +658,34 @@ handshake_continue(Config) when is_list(Config) ->
     ssl_test_lib:close(Server),
     ssl_test_lib:close(Client).
 
+%%------------------------------------------------------------------
+handshake_continue_timeout() ->
+    [{doc, "Test API function ssl:handshake_continue/3 with short timeout"}].
+handshake_continue_timeout(Config) when is_list(Config) -> 
+    ClientOpts = ssl_test_lib:ssl_options(client_verification_opts, Config),
+    ServerOpts = ssl_test_lib:ssl_options(server_verification_opts, Config),
+    {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
+
+    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0},
+                                        {from, self()},
+                                        {timeout, 1},
+                                        {options, ssl_test_lib:ssl_options([{reuseaddr, true}, {handshake, hello}],
+                                                                           Config)},
+                                        {continue_options, proplists:delete(reuseaddr, ServerOpts)}
+                                       ]),
+
+    Port = ssl_test_lib:inet_port(Server),
+
+
+    {connect_failed, _} = ssl_test_lib:start_client([{node, ClientNode}, {port, Port},
+                                                     {host, Hostname},
+                                                     {from, self()},
+                                                     {options, ClientOpts}]),
+    
+    ssl_test_lib:check_result(Server, {error,timeout}),
+    ssl_test_lib:close(Server).
+
+
 %%--------------------------------------------------------------------
 hello_client_cancel() ->
     [{doc, "Test API function ssl:handshake_cancel/1 on the client side"}].
@@ -702,19 +707,12 @@ hello_client_cancel(Config) when is_list(Config) ->
                                                       {from, self()}, 
                                                       {options, ssl_test_lib:ssl_options([{handshake, hello}], Config)},
                                                       {continue_options, cancel}]),    
-      receive
-          {Server, {error, {tls_alert, "user canceled"}}} ->
-              ok;
-          {Server, {error, closed}} ->
-              ct:pal("Did not receive the ALERT"),
-              ok
-      end.
-
+    ssl_test_lib:check_server_alert(Server, user_canceled).
 %%--------------------------------------------------------------------
 hello_server_cancel() ->
     [{doc, "Test API function ssl:handshake_cancel/1 on the server side"}].
 hello_server_cancel(Config) when is_list(Config) -> 
-    ClientOpts = ssl_test_lib:ssl_options(client_verification_opts, Config),
+    ClientOpts = ssl_test_lib:ssl_options(client_rsa_verify_opts, Config),
     {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
 
     Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0}, 
@@ -756,8 +754,8 @@ prf(Config) when is_list(Config) ->
 secret_connection_info() ->
     [{doc,"Test the API function ssl:connection_information/2"}].
 secret_connection_info(Config) when is_list(Config) -> 
-    ClientOpts = ssl_test_lib:ssl_options(client_verification_opts, Config),
-    ServerOpts = ssl_test_lib:ssl_options(server_verification_opts, Config),
+    ClientOpts = ssl_test_lib:ssl_options(client_rsa_verify_opts, Config),
+    ServerOpts = ssl_test_lib:ssl_options(server_rsa_verify_opts, Config),
     {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
 
     Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0}, 
@@ -838,42 +836,30 @@ controlling_process(Config) when is_list(Config) ->
     ClientMsg = "Server hello",
     ServerMsg = "Client hello",
    
-    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0}, 
-					{from, self()}, 
-			   {mfa, {?MODULE, 
-				  controlling_process_result, [self(),
-							       ServerMsg]}},
-			   {options, ServerOpts}]),
+    Server = ssl_test_lib:start_server([
+                                        {node, ServerNode}, {port, 0}, 
+                                        {from, self()}, 
+                                        {mfa, {?MODULE, 
+                                               controlling_process_result, [self(),
+                                                                            ServerMsg]}},
+                                        {options, ServerOpts}]),
     Port = ssl_test_lib:inet_port(Server),
-    Client = ssl_test_lib:start_client([{node, ClientNode}, {port, Port}, 
-					{host, Hostname},
-		   {from, self()}, 
+    {Client, CSocket} = ssl_test_lib:start_client([return_socket,
+                                                   {node, ClientNode}, {port, Port}, 
+                                                   {host, Hostname},
+                                        {from, self()}, 
 			   {mfa, {?MODULE, 
 				  controlling_process_result, [self(),
 							       ClientMsg]}},
 			   {options, ClientOpts}]),
-   
+    
     ct:log("Testcase ~p, Client ~p  Server ~p ~n",
-		       [self(), Client, Server]),
+           [self(), Client, Server]),
     
-    receive 
-	{ssl, _, "S"} ->
-	    receive_s_rizzo_duong_beast();
-	{ssl, _, ServerMsg} ->
-	    receive 
-		{ssl, _, ClientMsg} ->
-		    ok
-	    end;
-	{ssl, _, "C"} ->
-	    receive_c_rizzo_duong_beast();
-	{ssl, _, ClientMsg} ->
-	      receive 
-		  {ssl, _, ServerMsg} ->
-		      ok
-	      end;
-	Unexpected ->
-	    ct:fail(Unexpected)
-    end,
+    ServerMsg = ssl_test_lib:active_recv(CSocket, length(ServerMsg)),
+    %% We do not have the TLS server socket but all messages form the client
+    %% socket are now read, so ramining are form the server socket
+    ClientMsg = ssl_active_recv(length(ClientMsg)),
 
     ssl_test_lib:close(Server),
     ssl_test_lib:close(Client).
@@ -1195,9 +1181,8 @@ fallback(Config) when is_list(Config) ->
                                                            [{fallback, true},
                                                             {versions, ['tlsv1']}
                                                             | ClientOpts]}]),
-    
-    ssl_test_lib:check_result(Server, {error,{tls_alert,"inappropriate fallback"}},
-                              Client, {error,{tls_alert,"inappropriate fallback"}}).
+    ssl_test_lib:check_server_alert(Server, Client, inappropriate_fallback).
+   
 
 %%--------------------------------------------------------------------
 cipher_format() ->
@@ -1458,8 +1443,8 @@ cipher_suites_mix() ->
 
 cipher_suites_mix(Config) when is_list(Config) -> 
     CipherSuites = [{dhe_rsa,aes_128_cbc,sha256,sha256}, {dhe_rsa,aes_128_cbc,sha}],
-    ClientOpts = ssl_test_lib:ssl_options(client_verification_opts, Config),
-    ServerOpts = ssl_test_lib:ssl_options(server_verification_opts, Config),
+    ClientOpts = ssl_test_lib:ssl_options(client_rsa_verify_opts, Config),
+    ServerOpts = ssl_test_lib:ssl_options(server_rsa_verify_opts, Config),
 
     {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
 
@@ -1969,7 +1954,7 @@ recv_active(Config) when is_list(Config) ->
 
 %%--------------------------------------------------------------------
 recv_active_once() ->
-    [{doc,"Test recv on active socket"}].
+    [{doc,"Test recv on active (once) socket"}].
 
 recv_active_once(Config) when is_list(Config) ->
     ClientOpts = ssl_test_lib:ssl_options(client_opts, Config),
@@ -1994,6 +1979,178 @@ recv_active_once(Config) when is_list(Config) ->
     ssl_test_lib:close(Client).
 
 %%--------------------------------------------------------------------
+recv_active_n() ->
+    [{doc,"Test recv on active (n) socket"}].
+
+recv_active_n(Config) when is_list(Config) ->
+    ClientOpts = ssl_test_lib:ssl_options(client_opts, Config),
+    ServerOpts = ssl_test_lib:ssl_options(server_opts, Config),
+    {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
+    Server =
+	ssl_test_lib:start_server([{node, ServerNode}, {port, 0},
+				   {from, self()},
+				   {mfa, {?MODULE, try_recv_active_once, []}},
+				   {options,  [{active, 1} | ServerOpts]}]),
+    Port = ssl_test_lib:inet_port(Server),
+    Client =
+	ssl_test_lib:start_client([{node, ClientNode}, {port, Port},
+				   {host, Hostname},
+				   {from, self()},
+				   {mfa, {?MODULE, try_recv_active_once, []}},
+				   {options, [{active, 1} | ClientOpts]}]),
+
+    ssl_test_lib:check_result(Server, ok, Client, ok),
+
+    ssl_test_lib:close(Server),
+    ssl_test_lib:close(Client).
+
+%%--------------------------------------------------------------------
+%% Test case adapted from gen_tcp_misc_SUITE.
+active_n() ->
+    [{doc,"Test {active,N} option"}].
+
+active_n(Config) when is_list(Config) ->
+    ClientOpts = ssl_test_lib:ssl_options(client_opts, Config),
+    ServerOpts = ssl_test_lib:ssl_options(server_opts, Config),
+    Port = ssl_test_lib:inet_port(node()),
+    N = 3,
+    LS = ok(ssl:listen(Port, [{active,N}|ServerOpts])),
+    [{active,N}] = ok(ssl:getopts(LS, [active])),
+    active_n_common(LS, N),
+    Self = self(),
+    spawn_link(fun() ->
+        S0 = ok(ssl:transport_accept(LS)),
+        {ok, S} = ssl:handshake(S0),
+        ok = ssl:setopts(S, [{active,N}]),
+        [{active,N}] = ok(ssl:getopts(S, [active])),
+        ssl:controlling_process(S, Self),
+        Self ! {server, S}
+    end),
+    C = ok(ssl:connect("localhost", Port, [{active,N}|ClientOpts])),
+    [{active,N}] = ok(ssl:getopts(C, [active])),
+    S = receive
+        {server, S0} -> S0
+    after
+        1000 ->
+            exit({error, connect})
+    end,
+    active_n_common(C, N),
+    active_n_common(S, N),
+    ok = ssl:setopts(C, [{active,N}]),
+    ok = ssl:setopts(S, [{active,N}]),
+    ReceiveMsg = fun(Socket, Msg) ->
+        receive
+            {ssl,Socket,Msg} ->
+                ok;
+            {ssl,Socket,Begin} ->
+                receive
+                    {ssl,Socket,End} ->
+                        Msg = Begin ++ End,
+                        ok
+                after 1000 ->
+                    exit(timeout)
+                end
+        after 1000 ->
+            exit(timeout)
+        end
+    end,
+    repeat(3, fun(I) ->
+        Msg = "message "++integer_to_list(I),
+        ok = ssl:send(C, Msg),
+        ReceiveMsg(S, Msg),
+        ok = ssl:send(S, Msg),
+        ReceiveMsg(C, Msg)
+    end),
+    receive
+        {ssl_passive,S} ->
+            [{active,false}] = ok(ssl:getopts(S, [active]))
+    after
+        1000 ->
+            exit({error,ssl_passive})
+    end,
+    receive
+        {ssl_passive,C} ->
+            [{active,false}] = ok(ssl:getopts(C, [active]))
+    after
+        1000 ->
+            exit({error,ssl_passive})
+    end,
+    LS2 = ok(ssl:listen(0, [{active,0}])),
+    receive
+        {ssl_passive,LS2} ->
+            [{active,false}] = ok(ssl:getopts(LS2, [active]))
+    after
+        1000 ->
+            exit({error,ssl_passive})
+    end,
+    ok = ssl:close(LS2),
+    ok = ssl:close(C),
+    ok = ssl:close(S),
+    ok = ssl:close(LS),
+    ok.
+
+active_n_common(S, N) ->
+    ok = ssl:setopts(S, [{active,-N}]),
+    receive
+        {ssl_passive, S} -> ok
+    after
+        1000 ->
+            error({error,ssl_passive_failure})
+    end,
+    [{active,false}] = ok(ssl:getopts(S, [active])),
+    ok = ssl:setopts(S, [{active,0}]),
+    receive
+        {ssl_passive, S} -> ok
+    after
+        1000 ->
+            error({error,ssl_passive_failure})
+    end,
+    ok = ssl:setopts(S, [{active,32767}]),
+    {error,{options,_}} = ssl:setopts(S, [{active,1}]),
+    {error,{options,_}} = ssl:setopts(S, [{active,-32769}]),
+    ok = ssl:setopts(S, [{active,-32768}]),
+    receive
+        {ssl_passive, S} -> ok
+    after
+        1000 ->
+            error({error,ssl_passive_failure})
+    end,
+    [{active,false}] = ok(ssl:getopts(S, [active])),
+    ok = ssl:setopts(S, [{active,N}]),
+    ok = ssl:setopts(S, [{active,true}]),
+    [{active,true}] = ok(ssl:getopts(S, [active])),
+    receive
+        _ -> error({error,active_n})
+    after
+        0 ->
+            ok
+    end,
+    ok = ssl:setopts(S, [{active,N}]),
+    ok = ssl:setopts(S, [{active,once}]),
+    [{active,once}] = ok(ssl:getopts(S, [active])),
+    receive
+        _ -> error({error,active_n})
+    after
+        0 ->
+            ok
+    end,
+    {error,{options,_}} = ssl:setopts(S, [{active,32768}]),
+    ok = ssl:setopts(S, [{active,false}]),
+    [{active,false}] = ok(ssl:getopts(S, [active])),
+    ok.
+
+ok({ok,V}) -> V.
+
+repeat(N, Fun) ->
+    repeat(N, N, Fun).
+
+repeat(N, T, Fun) when is_integer(N), N > 0 ->
+    Fun(T-N),
+    repeat(N-1, T, Fun);
+repeat(_, _, _) ->
+    ok.
+
+%%--------------------------------------------------------------------
 dh_params() ->
     [{doc,"Test to specify DH-params file in server."}].
 
@@ -2118,15 +2275,21 @@ tls_downgrade(Config) when is_list(Config) ->
 
     Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0},
 					{from, self()},
-					{mfa, {?MODULE, tls_downgrade_result, []}},
+					{mfa, {?MODULE, tls_downgrade_result, [self()]}},
 					{options, [{active, false} | ServerOpts]}]),
     Port = ssl_test_lib:inet_port(Server),
     Client = ssl_test_lib:start_client([{node, ClientNode}, {port, Port},
 					{host, Hostname},
 					{from, self()},
-					{mfa, {?MODULE, tls_downgrade_result, []}},
+					{mfa, {?MODULE, tls_downgrade_result, [self()]}},
 					{options, [{active, false} |ClientOpts]}]),
 
+                                                   
+    ssl_test_lib:check_result(Server, ready, Client, ready),
+
+    Server ! go,
+    Client ! go,
+
     ssl_test_lib:check_result(Server, ok, Client, ok),
     ssl_test_lib:close(Server),
     ssl_test_lib:close(Client).
@@ -2364,8 +2527,8 @@ invalid_options() ->
     [{doc,"Test what happens when we give invalid options"}].
        
 invalid_options(Config) when is_list(Config) -> 
-    ClientOpts = ssl_test_lib:ssl_options(client_opts, Config),
-    ServerOpts = ssl_test_lib:ssl_options(server_opts, Config),
+    ClientOpts = ssl_test_lib:ssl_options(client_rsa_verify_opts, Config),
+    ServerOpts = ssl_test_lib:ssl_options(server_rsa_opts, Config),
     {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
     
     Check = fun(Client, Server, {versions, [sslv2, sslv3]} = Option) ->
@@ -2380,27 +2543,28 @@ invalid_options(Config) when is_list(Config) ->
 					      {error, {options, Option}})
 	    end,
 
-    TestOpts = [{versions, [sslv2, sslv3]}, 
-		{verify, 4}, 
-		{verify_fun, function},
-		{fail_if_no_peer_cert, 0}, 
-		{verify_client_once, 1},
-		{depth, four}, 
-		{certfile, 'cert.pem'}, 
-		{keyfile,'key.pem' }, 
-		{password, foo},
-		{cacertfile, ""}, 
-		{dhfile,'dh.pem' },
-		{ciphers, [{foo, bar, sha, ignore}]},
-		{reuse_session, foo},
-		{reuse_sessions, 0},
-		{renegotiate_at, "10"},
-		{mode, depech},
-		{packet, 8.0},
-		{packet_size, "2"},
-		{header, a},
-		{active, trice},
-		{key, 'key.pem' }],
+    TestOpts = 
+         [{versions, [sslv2, sslv3]}, 
+          {verify, 4}, 
+          {verify_fun, function},
+          {fail_if_no_peer_cert, 0}, 
+          {verify_client_once, 1},
+          {depth, four}, 
+          {certfile, 'cert.pem'}, 
+          {keyfile,'key.pem' }, 
+          {password, foo},
+          {cacertfile, ""}, 
+          {dhfile,'dh.pem' },
+          {ciphers, [{foo, bar, sha, ignore}]},
+          {reuse_session, foo},
+          {reuse_sessions, 0},
+          {renegotiate_at, "10"},
+          {mode, depech},
+          {packet, 8.0},
+          {packet_size, "2"},
+          {header, a},
+          {active, trice},
+          {key, 'key.pem' }],
 
     [begin
 	 Server =
@@ -2495,144 +2659,6 @@ tls_shutdown_error(Config) when is_list(Config) ->
     ok = ssl:close(Listen),
     {error, closed} = ssl:shutdown(Listen, read_write).
 
-%%-------------------------------------------------------------------
-ciphers_rsa_signed_certs() ->
-    [{doc,"Test all rsa ssl cipher suites in highest support ssl/tls version"}].
-       
-ciphers_rsa_signed_certs(Config) when is_list(Config) ->  
-    Ciphers = ssl_test_lib:rsa_suites(crypto),
-    run_suites(Ciphers, Config, rsa).
-%%-------------------------------------------------------------------
-ciphers_rsa_signed_certs_openssl_names() ->
-    [{doc,"Test all rsa ssl cipher suites in highest support ssl/tls version"}].
-       
-ciphers_rsa_signed_certs_openssl_names(Config) when is_list(Config) ->
-    Ciphers = ssl_test_lib:openssl_rsa_suites(),  
-    run_suites(Ciphers, Config, rsa).
-
-%%-------------------------------------------------------------------
-ciphers_dsa_signed_certs() ->
-    [{doc,"Test all dsa ssl cipher suites in highest support ssl/tls version"}].
-       
-ciphers_dsa_signed_certs(Config) when is_list(Config) ->
-    NVersion = ssl_test_lib:protocol_version(Config, tuple),
-    Ciphers = ssl_test_lib:dsa_suites(NVersion),
-    run_suites(Ciphers, Config, dsa).
-%%-------------------------------------------------------------------
-ciphers_dsa_signed_certs_openssl_names() ->
-    [{doc,"Test all dsa ssl cipher suites in highest support ssl/tls version"}].
-       
-ciphers_dsa_signed_certs_openssl_names(Config) when is_list(Config) ->
-    Ciphers = ssl_test_lib:openssl_dsa_suites(),
-    run_suites(Ciphers, Config, dsa).
-
-%%-------------------------------------------------------------------
-chacha_rsa_cipher_suites()->
-    [{doc,"Test the cacha with  ECDSA signed certs ciphersuites"}].
-chacha_rsa_cipher_suites(Config) when is_list(Config) ->
-    NVersion = ssl_test_lib:protocol_version(Config, tuple),
-    Ciphers = [S || {KeyEx,_,_} = S <- ssl_test_lib:chacha_suites(NVersion),
-                    KeyEx == ecdhe_rsa, KeyEx == dhe_rsa],
-    run_suites(Ciphers, Config, chacha_ecdsa).
-
-%%-------------------------------------------------------------------
-chacha_ecdsa_cipher_suites()->
-    [{doc,"Test the cacha with  ECDSA signed certs ciphersuites"}].
-chacha_ecdsa_cipher_suites(Config) when is_list(Config) ->
-    NVersion = ssl_test_lib:protocol_version(Config, tuple),
-    Ciphers = [S || {ecdhe_ecdsa,_,_} = S <- ssl_test_lib:chacha_suites(NVersion)],
-    run_suites(Ciphers, Config, chacha_rsa).
-%%-----------------------------------------------------------------
-anonymous_cipher_suites()->
-    [{doc,"Test the anonymous ciphersuites"}].
-anonymous_cipher_suites(Config) when is_list(Config) ->
-    NVersion = ssl_test_lib:protocol_version(Config, tuple),
-    Ciphers = ssl_test_lib:ecdh_dh_anonymous_suites(NVersion),
-    run_suites(Ciphers, Config, anonymous).
-%%-------------------------------------------------------------------
-psk_cipher_suites() ->
-    [{doc, "Test the PSK ciphersuites WITHOUT server supplied identity hint"}].
-psk_cipher_suites(Config) when is_list(Config) ->
-    NVersion = ssl_test_lib:protocol_version(Config, tuple),
-    Ciphers = ssl_test_lib:psk_suites(NVersion),
-    run_suites(Ciphers, Config, psk).
-%%-------------------------------------------------------------------
-psk_with_hint_cipher_suites()->
-    [{doc, "Test the PSK ciphersuites WITH server supplied identity hint"}].
-psk_with_hint_cipher_suites(Config) when is_list(Config) ->
-    NVersion = ssl_test_lib:protocol_version(Config, tuple),
-    Ciphers = ssl_test_lib:psk_suites(NVersion),
-    run_suites(Ciphers, Config, psk_with_hint).
-%%-------------------------------------------------------------------
-psk_anon_cipher_suites() ->
-    [{doc, "Test the anonymous PSK ciphersuites WITHOUT server supplied identity hint"}].
-psk_anon_cipher_suites(Config) when is_list(Config) ->
-    NVersion = ssl_test_lib:protocol_version(Config, tuple),
-    Ciphers = ssl_test_lib:psk_anon_suites(NVersion),
-    run_suites(Ciphers, Config, psk_anon).
-%%-------------------------------------------------------------------
-psk_anon_with_hint_cipher_suites()->
-    [{doc, "Test the anonymous PSK ciphersuites WITH server supplied identity hint"}].
-psk_anon_with_hint_cipher_suites(Config) when is_list(Config) ->
-    NVersion = ssl_test_lib:protocol_version(Config, tuple),
-    Ciphers = ssl_test_lib:psk_anon_suites(NVersion),
-    run_suites(Ciphers, Config, psk_anon_with_hint).
-%%-------------------------------------------------------------------
-srp_cipher_suites()->
-    [{doc, "Test the SRP ciphersuites"}].
-srp_cipher_suites(Config) when is_list(Config) ->
-    Ciphers = ssl_test_lib:srp_suites(),
-    run_suites(Ciphers, Config, srp).
-%%-------------------------------------------------------------------
-srp_anon_cipher_suites()->
-    [{doc, "Test the anonymous SRP ciphersuites"}].
-srp_anon_cipher_suites(Config) when is_list(Config) ->
-    Ciphers = ssl_test_lib:srp_anon_suites(),
-    run_suites(Ciphers, Config, srp_anon).
-%%-------------------------------------------------------------------
-srp_dsa_cipher_suites()->
-    [{doc, "Test the SRP DSA ciphersuites"}].
-srp_dsa_cipher_suites(Config) when is_list(Config) ->
-    Ciphers = ssl_test_lib:srp_dss_suites(),
-    run_suites(Ciphers, Config, srp_dsa).
-%%-------------------------------------------------------------------
-rc4_rsa_cipher_suites()->
-    [{doc, "Test the RC4 ciphersuites"}].
-rc4_rsa_cipher_suites(Config) when is_list(Config) ->
-    NVersion = ssl_test_lib:protocol_version(Config, tuple),
-    Ciphers = [S || {rsa,_,_} = S <- ssl_test_lib:rc4_suites(NVersion)],
-    run_suites(Ciphers, Config, rc4_rsa).
-%-------------------------------------------------------------------
-rc4_ecdh_rsa_cipher_suites()->
-    [{doc, "Test the RC4 ciphersuites"}].
-rc4_ecdh_rsa_cipher_suites(Config) when is_list(Config) ->
-    NVersion = ssl_test_lib:protocol_version(Config, tuple),
-    Ciphers = [S || {ecdh_rsa,_,_} = S <- ssl_test_lib:rc4_suites(NVersion)],
-    run_suites(Ciphers, Config, rc4_ecdh_rsa).
-
-%%-------------------------------------------------------------------
-rc4_ecdsa_cipher_suites()->
-    [{doc, "Test the RC4 ciphersuites"}].
-rc4_ecdsa_cipher_suites(Config) when is_list(Config) ->
-    NVersion = tls_record:highest_protocol_version([]),
-    Ciphers = [S || {ecdhe_ecdsa,_,_} = S <- ssl_test_lib:rc4_suites(NVersion)],
-    run_suites(Ciphers, Config, rc4_ecdsa).
-
-%%-------------------------------------------------------------------
-des_rsa_cipher_suites()->
-    [{doc, "Test the des_rsa ciphersuites"}].
-des_rsa_cipher_suites(Config) when is_list(Config) ->
-    NVersion = tls_record:highest_protocol_version([]),
-    Ciphers = [S || {rsa,_,_} = S <- ssl_test_lib:des_suites(NVersion)],
-    run_suites(Ciphers, Config, des_rsa).
-%-------------------------------------------------------------------
-des_ecdh_rsa_cipher_suites()->
-    [{doc, "Test ECDH rsa signed ciphersuites"}].
-des_ecdh_rsa_cipher_suites(Config) when is_list(Config) ->
-    NVersion = ssl_test_lib:protocol_version(Config, tuple),
-    Ciphers = [S || {dhe_rsa,_,_} = S <- ssl_test_lib:des_suites(NVersion)],
-    run_suites(Ciphers, Config, des_dhe_rsa).
-
 %%--------------------------------------------------------------------
 default_reject_anonymous()->
     [{doc,"Test that by default anonymous cipher suites are rejected "}].
@@ -2656,212 +2682,75 @@ default_reject_anonymous(Config) when is_list(Config) ->
                                                [{ciphers,[CipherSuite]} |
                                                 ClientOpts]}]),
 
-    ssl_test_lib:check_result(Server, {error, {tls_alert, "insufficient security"}},
-                              Client, {error, {tls_alert, "insufficient security"}}).
-
-%%--------------------------------------------------------------------
-ciphers_ecdsa_signed_certs() ->
-    [{doc, "Test all ecdsa ssl cipher suites in highest support ssl/tls version"}].
-
-ciphers_ecdsa_signed_certs(Config) when is_list(Config) ->
-    NVersion = ssl_test_lib:protocol_version(Config, tuple),
-    Ciphers = ssl_test_lib:ecdsa_suites(NVersion),
-    run_suites(Ciphers, Config, ecdsa).
-%%--------------------------------------------------------------------
-ciphers_ecdsa_signed_certs_openssl_names() ->
-    [{doc, "Test all ecdsa ssl cipher suites in highest support ssl/tls version"}].
-
-ciphers_ecdsa_signed_certs_openssl_names(Config) when is_list(Config) ->
-    Ciphers = ssl_test_lib:openssl_ecdsa_suites(),
-    run_suites(Ciphers, Config, ecdsa).
-%%--------------------------------------------------------------------
-ciphers_ecdh_rsa_signed_certs() ->
-    [{doc, "Test all ecdh_rsa ssl cipher suites in highest support ssl/tls version"}].
-
-ciphers_ecdh_rsa_signed_certs(Config) when is_list(Config) ->
-    NVersion = ssl_test_lib:protocol_version(Config, tuple),
-    Ciphers = ssl_test_lib:ecdh_rsa_suites(NVersion),
-    run_suites(Ciphers, Config, ecdh_rsa).
-%%--------------------------------------------------------------------
-ciphers_ecdh_rsa_signed_certs_openssl_names() ->
-    [{doc, "Test all ecdh_rsa ssl cipher suites in highest support ssl/tls version"}].
+    ssl_test_lib:check_server_alert(Server, Client, insufficient_security).
 
-ciphers_ecdh_rsa_signed_certs_openssl_names(Config) when is_list(Config) ->
-    Ciphers = ssl_test_lib:openssl_ecdh_rsa_suites(),
-    run_suites(Ciphers, Config, ecdh_rsa).
 %%--------------------------------------------------------------------
 reuse_session() ->
     [{doc,"Test reuse of sessions (short handshake)"}].
 reuse_session(Config) when is_list(Config) -> 
-    ClientOpts = ssl_test_lib:ssl_options(client_opts, Config),
-    ServerOpts = ssl_test_lib:ssl_options(server_opts, Config),
-    {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
-
-    Server = 
-	ssl_test_lib:start_server([{node, ServerNode}, {port, 0}, 
-				   {from, self()},
-				   {mfa, {ssl_test_lib, session_info_result, []}},
-				   {options, ServerOpts}]),
-    Port = ssl_test_lib:inet_port(Server),
-    Client0 =
-	ssl_test_lib:start_client([{node, ClientNode}, 
-		      {port, Port}, {host, Hostname},
-				   {mfa, {ssl_test_lib, no_result, []}},
-		      {from, self()},  {options, ClientOpts}]),   
-    SessionInfo = 
-	receive
-	    {Server, Info} ->
-		Info
-	end,
-       
-    Server ! {listen, {mfa, {ssl_test_lib, no_result, []}}},
-    
-    %% Make sure session is registered
-    ct:sleep(?SLEEP),
-
-    Client1 =
-	ssl_test_lib:start_client([{node, ClientNode},
-				   {port, Port}, {host, Hostname},
-				   {mfa, {ssl_test_lib, session_info_result, []}},
-				   {from, self()},  {options, ClientOpts}]),
-    receive
-	{Client1, SessionInfo} ->
-	    ok;
-	{Client1, Other} ->
-	    ct:log("Expected: ~p,  Unexpected: ~p~n",
-			       [SessionInfo, Other]),
-	    ct:fail(session_not_reused)
-    end,
-    
-    Server !  {listen, {mfa, {ssl_test_lib, no_result, []}}},
+    ClientOpts = ssl_test_lib:ssl_options(client_rsa_verify_opts, Config),
+    ServerOpts = ssl_test_lib:ssl_options(server_rsa_opts, Config),
     
-    Client2 =
-	ssl_test_lib:start_client([{node, ClientNode},
-		      {port, Port}, {host, Hostname},
-			    {mfa, {ssl_test_lib, session_info_result, []}},
-		      {from, self()},  {options, [{reuse_sessions, false}
-						  | ClientOpts]}]),   
-    receive
-	{Client2, SessionInfo} ->
-	    ct:fail(
-	      session_reused_when_session_reuse_disabled_by_client);
-	{Client2, _} ->
-	    ok
-    end,
-    
-    ssl_test_lib:close(Server),
-
-    Server1 = 
-	ssl_test_lib:start_server([{node, ServerNode}, {port, 0}, 
-				   {from, self()},
-		      {mfa, {ssl_test_lib, session_info_result, []}},
-		      {options, [{reuse_sessions, false} | ServerOpts]}]),
-    
-    Port1 = ssl_test_lib:inet_port(Server1),
-    Client3 =
-	ssl_test_lib:start_client([{node, ClientNode}, 
-				   {port, Port1}, {host, Hostname},
-				   {mfa, {ssl_test_lib, no_result, []}},
-				   {from, self()},  {options, ClientOpts}]), 
-
-    SessionInfo1 = 
-	receive
-	    {Server1, Info1} ->
-		Info1
-	end,
-       
-    Server1 ! {listen, {mfa, {ssl_test_lib, no_result, []}}},
-    
-    %% Make sure session is registered
-    ct:sleep(?SLEEP),
-
-    Client4 = 
-	ssl_test_lib:start_client([{node, ClientNode}, 
-				   {port, Port1}, {host, Hostname},
-				   {mfa, {ssl_test_lib, session_info_result, []}},
-				   {from, self()},  {options, ClientOpts}]),
-    
-    receive
-	{Client4, SessionInfo1} ->
-	    ct:fail(
-	      session_reused_when_session_reuse_disabled_by_server);
-	{Client4, _Other} ->
-	    ct:log("OTHER: ~p ~n", [_Other]),
-	    ok
-    end,
-
-    ssl_test_lib:close(Server1),
-    ssl_test_lib:close(Client0),
-    ssl_test_lib:close(Client1),
-    ssl_test_lib:close(Client2),
-    ssl_test_lib:close(Client3),
-    ssl_test_lib:close(Client4).
-
+    ssl_test_lib:reuse_session(ClientOpts, ServerOpts, Config).
 %%--------------------------------------------------------------------
 reuse_session_expired() ->
     [{doc,"Test sessions is not reused when it has expired"}].
 reuse_session_expired(Config) when is_list(Config) -> 
-    ClientOpts = ssl_test_lib:ssl_options(client_opts, Config),
-    ServerOpts = ssl_test_lib:ssl_options(server_opts, Config),
+    ClientOpts = ssl_test_lib:ssl_options(client_rsa_verify_opts, Config),
+    ServerOpts = ssl_test_lib:ssl_options(server_rsa_opts, Config),
     {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
-
-    Server = 
-	ssl_test_lib:start_server([{node, ServerNode}, {port, 0}, 
+    
+    Server0 =
+	ssl_test_lib:start_server([{node, ServerNode}, {port, 0},
 				   {from, self()},
-		      {mfa, {ssl_test_lib, session_info_result, []}},
-		      {options, ServerOpts}]),
-    Port = ssl_test_lib:inet_port(Server),
-    Client0 =
-	ssl_test_lib:start_client([{node, ClientNode}, 
-		      {port, Port}, {host, Hostname},
-			    {mfa, {ssl_test_lib, no_result, []}},
-		      {from, self()},  {options, ClientOpts}]),   
-    SessionInfo = 
-	receive
-	    {Server, Info} ->
-		Info
-	end,
-
-    Server ! {listen, {mfa, {ssl_test_lib, no_result, []}}},
+				   {mfa, {ssl_test_lib, no_result, []}},
+				   {tcp_options, [{active, false}]},
+				   {options, ServerOpts}]),
+    Port0 = ssl_test_lib:inet_port(Server0),
     
-    %% Make sure session is registered
-    ct:sleep(?SLEEP),
-
-    Client1 =
-	ssl_test_lib:start_client([{node, ClientNode}, 
-		      {port, Port}, {host, Hostname},
-		      {mfa, {ssl_test_lib, session_info_result, []}},
-		      {from, self()},  {options, ClientOpts}]),    
+    Client0 = ssl_test_lib:start_client([{node, ClientNode},
+                                         {port, Port0}, {host, Hostname},
+                                         {mfa, {ssl_test_lib, session_id, []}},
+                                         {from, self()},  {options, [{reuse_sessions, save} | ClientOpts]}]),
+    Server0 ! listen,
+    
+    Client1 = ssl_test_lib:start_client([{node, ClientNode},
+                                         {port, Port0}, {host, Hostname},
+                                         {mfa, {ssl_test_lib, session_id, []}},
+                                         {from, self()},  {options, ClientOpts}]),    
+    
+    SID = receive
+              {Client0, Id0} ->
+                  Id0
+          end,
+       
     receive
-	{Client1, SessionInfo} ->
-	    ok;
-	{Client1, Other} ->
-	    ct:log("Expected: ~p,  Unexpected: ~p~n",
-			       [SessionInfo, Other]),
-	    ct:fail(session_not_reused)
+        {Client1, SID} ->
+            ok
+    after ?SLEEP ->
+              ct:fail(session_not_reused)
     end,
     
-    Server ! listen,
-
+    Server0 ! listen,
+    
     %% Make sure session is unregistered due to expiration
-    ct:sleep((?EXPIRE+1)),
-    [{session_id, Id} |_] = SessionInfo,
+    ct:sleep((?EXPIRE*2)),
 
-    make_sure_expired(Hostname, Port, Id),
+    make_sure_expired(Hostname, Port0, SID),
     
     Client2 =
 	ssl_test_lib:start_client([{node, ClientNode}, 
-				   {port, Port}, {host, Hostname},
-				   {mfa, {ssl_test_lib, session_info_result, []}},
+				   {port, Port0}, {host, Hostname},
+				   {mfa, {ssl_test_lib, session_id, []}},
 				   {from, self()}, {options, ClientOpts}]),   
     receive
-	{Client2, SessionInfo} ->
+	{Client2, SID} ->
 	    ct:fail(session_reused_when_session_expired);
 	{Client2, _} ->
 	    ok
     end,
     process_flag(trap_exit, false),
-    ssl_test_lib:close(Server),
+    ssl_test_lib:close(Server0),
     ssl_test_lib:close(Client0),
     ssl_test_lib:close(Client1),
     ssl_test_lib:close(Client2).
@@ -2870,16 +2759,16 @@ make_sure_expired(Host, Port, Id) ->
     {status, _, _, StatusInfo} = sys:get_status(whereis(ssl_manager)),
     [_, _,_, _, Prop] = StatusInfo,
     State = ssl_test_lib:state(Prop),
-    Cache = element(2, State),
+    ClientCache = element(2, State),
 
-    case ssl_session_cache:lookup(Cache, {{Host,  Port}, Id}) of
+    case ssl_session_cache:lookup(ClientCache, {{Host,  Port}, Id}) of
 	undefined ->
-	   ok;
+   	   ok; 
 	#session{is_resumable = false} ->
-	   ok;
+   	   ok;
 	_ ->
 	    ct:sleep(?SLEEP),
-	    make_sure_expired(Host, Port, Id)
+            make_sure_expired(Host, Port, Id)
     end.     
 
 %%--------------------------------------------------------------------
@@ -3357,9 +3246,9 @@ defaults(Config) when is_list(Config)->
     true = lists:member(sslv3, proplists:get_value(available, Versions)),
     false = lists:member(sslv3,  proplists:get_value(supported, Versions)),
     true = lists:member('tlsv1', proplists:get_value(available, Versions)),
-    true = lists:member('tlsv1',  proplists:get_value(supported, Versions)),
+    false = lists:member('tlsv1',  proplists:get_value(supported, Versions)),
     true = lists:member('tlsv1.1', proplists:get_value(available, Versions)),
-    true = lists:member('tlsv1.1',  proplists:get_value(supported, Versions)),
+    false = lists:member('tlsv1.1',  proplists:get_value(supported, Versions)),
     true = lists:member('tlsv1.2', proplists:get_value(available, Versions)),
     true = lists:member('tlsv1.2',  proplists:get_value(supported, Versions)),    
     false = lists:member({rsa,rc4_128,sha}, ssl:cipher_suites()),
@@ -3371,7 +3260,7 @@ defaults(Config) when is_list(Config)->
     true = lists:member('dtlsv1.2', proplists:get_value(available_dtls, Versions)),
     true = lists:member('dtlsv1', proplists:get_value(available_dtls, Versions)),
     true = lists:member('dtlsv1.2', proplists:get_value(supported_dtls, Versions)),
-    true = lists:member('dtlsv1', proplists:get_value(supported_dtls, Versions)).
+    false = lists:member('dtlsv1', proplists:get_value(supported_dtls, Versions)).
 
 %%--------------------------------------------------------------------
 reuseaddr() ->
@@ -3532,7 +3421,7 @@ honor_cipher_order(Config, Honor, ServerCiphers, ClientCiphers, Expected) ->
 
 %%--------------------------------------------------------------------
 tls_ciphersuite_vs_version()  ->
-    [{doc,"Test a SSLv3 client can not negotiate a TLSv* cipher suite."}].
+    [{doc,"Test a SSLv3 client cannot negotiate a TLSv* cipher suite."}].
 tls_ciphersuite_vs_version(Config) when is_list(Config) ->
     
     {_ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
@@ -3575,14 +3464,14 @@ conf_signature_algs(Config) when is_list(Config) ->
 	ssl_test_lib:start_server([{node, ServerNode}, {port, 0}, 
 				   {from, self()}, 
 				   {mfa, {ssl_test_lib, send_recv_result, []}},
-				   {options,  [{active, false}, {signature_algs, [{sha256, rsa}]} | ServerOpts]}]),
+				   {options,  [{active, false}, {signature_algs, [{sha, rsa}]} | ServerOpts]}]),
     Port = ssl_test_lib:inet_port(Server),
     Client = 
 	ssl_test_lib:start_client([{node, ClientNode}, {port, Port}, 
 				   {host, Hostname},
 				   {from, self()}, 
 				   {mfa, {ssl_test_lib, send_recv_result, []}},
-				   {options, [{active, false}, {signature_algs, [{sha256, rsa}]} | ClientOpts]}]),
+				   {options, [{active, false}, {signature_algs, [{sha, rsa}]} | ClientOpts]}]),
     
     ct:log("Testcase ~p, Client ~p  Server ~p ~n",
 			 [self(), Client, Server]),
@@ -3615,8 +3504,7 @@ no_common_signature_algs(Config) when is_list(Config) ->
                                               {options, [{signature_algs, [{sha384, rsa}]}
                                                          | ClientOpts]}]),
     
-    ssl_test_lib:check_result(Server, {error, {tls_alert, "insufficient security"}},
-                              Client, {error, {tls_alert, "insufficient security"}}).
+    ssl_test_lib:check_server_alert(Server, Client, insufficient_security).
 
 %%--------------------------------------------------------------------
 
@@ -3647,7 +3535,7 @@ tls_dont_crash_on_handshake_garbage(Config) ->
                        <<22, 3,3, 5:16, 92,64,37,228,209>> % garbage
                       ]),
     % Send unexpected change_cipher_spec
-    ok = gen_tcp:send(Socket, <<20, 0,0,12, 111,40,244,7,137,224,16,109,197,110,249,152>>),
+    ok = gen_tcp:send(Socket, <<20, 3,3, 12:16, 111,40,244,7,137,224,16,109,197,110,249,152>>),
 
     % Ensure we receive an alert, not sudden disconnect
     {ok, <<21, _/binary>>} = drop_handshakes(Socket, 1000).
@@ -3980,8 +3868,8 @@ tls_tcp_error_propagation_in_active_mode(Config) when is_list(Config) ->
     {status, _, _, StatusInfo} = sys:get_status(Pid),
     [_, _,_, _, Prop] = StatusInfo,
     State = ssl_test_lib:state(Prop),
-    Socket = element(11, State),
-
+    StaticEnv = element(2, State),
+    Socket = element(11, StaticEnv),
     %% Fake tcp error
     Pid ! {tcp_error, Socket, etimedout},
 
@@ -4131,6 +4019,8 @@ rizzo(Config) when is_list(Config) ->
                                          {cipher, 
                                           fun(rc4_128) -> 
                                                   false;
+                                             (chacha20_poly1305) ->
+                                                  false;
                                              (_) -> 
                                                   true 
                                           end}]),
@@ -4173,6 +4063,9 @@ rizzo_one_n_minus_one(Config) when is_list(Config) ->
                                          {cipher, 
                                           fun(rc4_128) ->
                                                   false;
+                                             %% TODO: remove this clause when chacha is fixed!
+                                             (chacha20_poly1305) ->
+                                                  false;
                                              (_) -> 
                                                   true 
                                           end}]),
@@ -4314,8 +4207,7 @@ tls_versions_option(Config) when is_list(Config) ->
 	{Server, _} ->
 	    ok
     end,	    
-   
-    ssl_test_lib:check_result(ErrClient, {error, {tls_alert, "protocol version"}}).
+    ssl_test_lib:check_client_alert(ErrClient, protocol_version).
 
 
 %%--------------------------------------------------------------------
@@ -4476,6 +4368,1292 @@ accept_pool(Config) when is_list(Config) ->
     ssl_test_lib:close(Client1),
     ssl_test_lib:close(Client2).
     
+%%--------------------------------------------------------------------
+%% TLS 1.3
+%%--------------------------------------------------------------------
+
+tls13_enable_client_side() ->
+    [{doc,"Test that a TLS 1.3 client can connect to a TLS 1.2 server."}].
+
+tls13_enable_client_side(Config) when is_list(Config) ->
+    ClientOpts = ssl_test_lib:ssl_options(client_opts, Config),
+    ServerOpts = ssl_test_lib:ssl_options(server_opts, Config),
+
+    {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
+    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0},
+					{from, self()},
+					{mfa, {?MODULE, protocol_info_result, []}},
+					{options, [{versions,
+                                                    ['tlsv1.1', 'tlsv1.2']} | ServerOpts] }]),
+    Port = ssl_test_lib:inet_port(Server),
+
+    Client = ssl_test_lib:start_client([{node, ClientNode}, {port, Port},
+					{host, Hostname},
+					{from, self()},
+					{mfa, {?MODULE, protocol_info_result, []}},
+					{options,  [{versions,
+                                                     ['tlsv1.2', 'tlsv1.3']} | ClientOpts]}]),
+
+    ServerMsg = ClientMsg = {ok, 'tlsv1.2'},
+    ssl_test_lib:check_result(Server, ServerMsg, Client, ClientMsg).
+
+tls13_enable_server_side() ->
+    [{doc,"Test that a TLS 1.2 client can connect to a TLS 1.3 server."}].
+
+tls13_enable_server_side(Config) when is_list(Config) ->
+    ClientOpts = ssl_test_lib:ssl_options(client_opts, Config),
+    ServerOpts = ssl_test_lib:ssl_options(server_opts, Config),
+
+    {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
+    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0},
+					{from, self()},
+					{mfa, {?MODULE, protocol_info_result, []}},
+					{options, [{versions,
+                                                    ['tlsv1.2', 'tlsv1.3']} | ServerOpts] }]),
+    Port = ssl_test_lib:inet_port(Server),
+
+    Client = ssl_test_lib:start_client([{node, ClientNode}, {port, Port},
+					{host, Hostname},
+					{from, self()},
+					{mfa, {?MODULE, protocol_info_result, []}},
+					{options,  [{versions,
+                                                     ['tlsv1.2', 'tlsv1.1']} | ClientOpts]}]),
+
+    ServerMsg = ClientMsg = {ok, 'tlsv1.2'},
+    ssl_test_lib:check_result(Server, ServerMsg, Client, ClientMsg).
+
+tls_record_1_3_encode_decode() ->
+     [{doc,"Test TLS 1.3 record encode/decode functions"}].
+
+tls_record_1_3_encode_decode(_Config) ->
+    ConnectionStates =
+        #{current_read =>
+              #{beast_mitigation => one_n_minus_one,
+                cipher_state =>
+                    {cipher_state,
+                     <<14,172,111,243,199,170,242,203,126,205,34,93,122,115,226,14,
+                       15,117,155,48,24,112,61,15,113,208,127,51,179,227,194,232>>,
+                     <<197,54,168,218,54,91,157,58,30,201,197,142,51,58,53,231,228,
+                       131,57,122,170,78,82,196,30,48,23,16,95,255,185,236>>,
+                     undefined,undefined,undefined,16},
+                client_verify_data => undefined,compression_state => undefined,
+                mac_secret => undefined,secure_renegotiation => undefined,
+                security_parameters =>
+                    {security_parameters,
+                     <<19,2>>,
+                     0,8,2,undefined,undefined,undefined,undefined,undefined,
+                     sha384,undefined,undefined,
+                     {handshake_secret,
+                      <<128,229,186,211,62,127,182,20,62,166,233,23,135,64,121,
+                        3,104,251,214,161,253,31,3,2,232,37,8,221,189,72,64,218,
+                        121,41,112,148,254,34,68,164,228,60,161,201,132,55,56,
+                        157>>},
+                     undefined,
+                     <<92,24,205,75,244,60,136,212,250,32,214,20,37,3,213,87,61,207,
+                       147,61,168,145,177,118,160,153,33,53,48,108,191,174>>,
+                     undefined},
+                sequence_number => 0,server_verify_data => undefined},
+          current_write =>
+              #{beast_mitigation => one_n_minus_one,
+                cipher_state =>
+                    {cipher_state,
+                     <<14,172,111,243,199,170,242,203,126,205,34,93,122,115,226,14,
+                       15,117,155,48,24,112,61,15,113,208,127,51,179,227,194,232>>,
+                     <<197,54,168,218,54,91,157,58,30,201,197,142,51,58,53,231,228,
+                       131,57,122,170,78,82,196,30,48,23,16,95,255,185,236>>,
+                     undefined,undefined,undefined,16},
+                client_verify_data => undefined,compression_state => undefined,
+                mac_secret => undefined,secure_renegotiation => undefined,
+                security_parameters =>
+                    {security_parameters,
+                     <<19,2>>,
+                     0,8,2,undefined,undefined,undefined,undefined,undefined,
+                     sha384,undefined,undefined,
+                     {handshake_secret,
+                      <<128,229,186,211,62,127,182,20,62,166,233,23,135,64,121,
+                        3,104,251,214,161,253,31,3,2,232,37,8,221,189,72,64,218,
+                        121,41,112,148,254,34,68,164,228,60,161,201,132,55,56,
+                        157>>},
+                     undefined,
+                     <<92,24,205,75,244,60,136,212,250,32,214,20,37,3,213,87,61,207,
+                       147,61,168,145,177,118,160,153,33,53,48,108,191,174>>,
+                     undefined},
+                sequence_number => 0,server_verify_data => undefined}},
+
+    PlainText = [11,
+                 <<0,2,175>>,
+                 <<0,0,2,171,0,2,166,48,130,2,162,48,130,1,138,2,9,0,186,57,220,137,88,255,
+                   191,235,48,13,6,9,42,134,72,134,247,13,1,1,11,5,0,48,18,49,16,48,14,6,3,85,
+                   4,3,12,7,84,101,115,116,32,67,65,48,30,23,13,49,56,48,53,48,52,49,52,49,50,
+                   51,56,90,23,13,50,56,48,50,48,52,49,52,49,50,51,56,90,48,20,49,18,48,16,6,
+                   3,85,4,3,12,9,108,111,99,97,108,104,111,115,116,48,130,1,34,48,13,6,9,42,
+                   134,72,134,247,13,1,1,1,5,0,3,130,1,15,0,48,130,1,10,2,130,1,1,0,169,40,
+                   144,176,121,63,134,97,144,126,243,183,225,157,37,131,183,225,87,243,23,88,
+                   230,70,9,134,32,147,7,27,167,98,51,81,224,75,199,12,229,251,195,207,75,179,
+                   181,78,128,3,255,44,58,39,43,172,142,45,186,58,51,65,187,199,154,153,245,
+                   70,133,137,1,27,87,42,116,65,251,129,109,145,233,97,171,71,54,213,185,74,
+                   209,166,11,218,189,119,206,86,170,60,212,213,85,189,30,50,215,23,185,53,
+                   132,238,132,176,198,250,139,251,198,221,225,128,109,113,23,220,39,143,71,
+                   30,59,189,51,244,61,158,214,146,180,196,103,169,189,221,136,78,129,216,148,
+                   2,9,8,65,37,224,215,233,13,209,21,235,20,143,33,74,59,53,208,90,152,94,251,
+                   54,114,171,39,88,230,227,158,211,135,37,182,67,205,161,59,20,138,58,253,15,
+                   53,48,8,157,9,95,197,9,177,116,21,54,9,125,78,109,182,83,20,16,234,223,116,
+                   41,155,123,87,77,17,120,153,246,239,124,130,105,219,166,146,242,151,66,198,
+                   75,72,63,28,246,86,16,244,223,22,36,50,15,247,222,98,6,152,136,154,72,150,
+                   73,127,2,3,1,0,1,48,13,6,9,42,134,72,134,247,13,1,1,11,5,0,3,130,1,1,0,76,
+                   33,54,160,229,219,219,193,150,116,245,252,18,39,235,145,86,12,167,171,52,
+                   117,166,30,83,5,216,245,177,217,247,95,1,136,94,246,212,108,248,230,111,
+                   225,202,189,6,129,8,70,128,245,18,204,215,87,82,129,253,227,122,66,182,184,
+                   189,30,193,169,144,218,216,109,105,110,215,144,60,104,162,178,101,164,218,
+                   122,60,37,41,143,57,150,52,59,51,112,238,113,239,168,114,69,183,143,154,73,
+                   61,58,80,247,172,95,251,55,28,186,28,200,206,230,118,243,92,202,189,49,76,
+                   124,252,76,0,247,112,85,194,69,59,222,163,228,103,49,110,104,109,251,155,
+                   138,9,37,167,49,189,48,134,52,158,185,129,24,96,153,196,251,90,206,76,239,
+                   175,119,174,165,133,108,222,125,237,125,187,149,152,83,190,16,202,94,202,
+                   201,40,218,22,254,63,189,41,174,97,140,203,70,18,196,118,237,175,134,79,78,
+                   246,2,61,54,77,186,112,32,17,193,192,188,217,252,215,200,7,245,180,179,132,
+                   183,212,229,155,15,152,206,135,56,81,88,3,123,244,149,110,182,72,109,70,62,
+                   146,152,146,151,107,126,216,210,9,93,0,0>>],
+
+    {[_Header|Encoded], _} = tls_record_1_3:encode_plain_text(22, PlainText, ConnectionStates),
+    CipherText = #ssl_tls{type = 23, version = {3,3}, fragment = Encoded},
+
+    {#ssl_tls{type = 22, version = {3,4}, fragment = DecodedText}, _} =
+        tls_record_1_3:decode_cipher_text(CipherText, ConnectionStates),
+
+    DecodedText = iolist_to_binary(PlainText),
+    ct:log("Decoded: ~p ~n", [DecodedText]),
+    ok.
+
+tls13_1_RTT_handshake() ->
+     [{doc,"Test TLS 1.3 1-RTT Handshake"}].
+
+tls13_1_RTT_handshake(_Config) ->
+    %% ConnectionStates with NULL cipher
+    ConnStatesNull =
+       #{current_write =>
+             #{security_parameters =>
+                   #security_parameters{cipher_suite = ?TLS_NULL_WITH_NULL_NULL},
+               sequence_number => 0
+              }
+        },
+
+    %% {client}  construct a ClientHello handshake message:
+    %%
+    %%    ClientHello (196 octets):  01 00 00 c0 03 03 cb 34 ec b1 e7 81 63
+    %%       ba 1c 38 c6 da cb 19 6a 6d ff a2 1a 8d 99 12 ec 18 a2 ef 62 83
+    %%       02 4d ec e7 00 00 06 13 01 13 03 13 02 01 00 00 91 00 00 00 0b
+    %%       00 09 00 00 06 73 65 72 76 65 72 ff 01 00 01 00 00 0a 00 14 00
+    %%       12 00 1d 00 17 00 18 00 19 01 00 01 01 01 02 01 03 01 04 00 23
+    %%       00 00 00 33 00 26 00 24 00 1d 00 20 99 38 1d e5 60 e4 bd 43 d2
+    %%       3d 8e 43 5a 7d ba fe b3 c0 6e 51 c1 3c ae 4d 54 13 69 1e 52 9a
+    %%       af 2c 00 2b 00 03 02 03 04 00 0d 00 20 00 1e 04 03 05 03 06 03
+    %%       02 03 08 04 08 05 08 06 04 01 05 01 06 01 02 01 04 02 05 02 06
+    %%       02 02 02 00 2d 00 02 01 01 00 1c 00 02 40 01
+    %%
+    %% {client}  send handshake record:
+    %%
+    %%    payload (196 octets):  01 00 00 c0 03 03 cb 34 ec b1 e7 81 63 ba
+    %%       1c 38 c6 da cb 19 6a 6d ff a2 1a 8d 99 12 ec 18 a2 ef 62 83 02
+    %%       4d ec e7 00 00 06 13 01 13 03 13 02 01 00 00 91 00 00 00 0b 00
+    %%       09 00 00 06 73 65 72 76 65 72 ff 01 00 01 00 00 0a 00 14 00 12
+    %%       00 1d 00 17 00 18 00 19 01 00 01 01 01 02 01 03 01 04 00 23 00
+    %%       00 00 33 00 26 00 24 00 1d 00 20 99 38 1d e5 60 e4 bd 43 d2 3d
+    %%       8e 43 5a 7d ba fe b3 c0 6e 51 c1 3c ae 4d 54 13 69 1e 52 9a af
+    %%       2c 00 2b 00 03 02 03 04 00 0d 00 20 00 1e 04 03 05 03 06 03 02
+    %%       03 08 04 08 05 08 06 04 01 05 01 06 01 02 01 04 02 05 02 06 02
+    %%       02 02 00 2d 00 02 01 01 00 1c 00 02 40 01
+    %%
+    %%    complete record (201 octets):  16 03 01 00 c4 01 00 00 c0 03 03 cb
+    %%       34 ec b1 e7 81 63 ba 1c 38 c6 da cb 19 6a 6d ff a2 1a 8d 99 12
+    %%       ec 18 a2 ef 62 83 02 4d ec e7 00 00 06 13 01 13 03 13 02 01 00
+    %%       00 91 00 00 00 0b 00 09 00 00 06 73 65 72 76 65 72 ff 01 00 01
+    %%       00 00 0a 00 14 00 12 00 1d 00 17 00 18 00 19 01 00 01 01 01 02
+    %%       01 03 01 04 00 23 00 00 00 33 00 26 00 24 00 1d 00 20 99 38 1d
+    %%       e5 60 e4 bd 43 d2 3d 8e 43 5a 7d ba fe b3 c0 6e 51 c1 3c ae 4d
+    %%       54 13 69 1e 52 9a af 2c 00 2b 00 03 02 03 04 00 0d 00 20 00 1e
+    %%       04 03 05 03 06 03 02 03 08 04 08 05 08 06 04 01 05 01 06 01 02
+    %%       01 04 02 05 02 06 02 02 02 00 2d 00 02 01 01 00 1c 00 02 40 01
+    ClientHello =
+        hexstr2bin("01 00 00 c0 03 03 cb 34 ec b1 e7 81 63
+          ba 1c 38 c6 da cb 19 6a 6d ff a2 1a 8d 99 12 ec 18 a2 ef 62 83
+          02 4d ec e7 00 00 06 13 01 13 03 13 02 01 00 00 91 00 00 00 0b
+          00 09 00 00 06 73 65 72 76 65 72 ff 01 00 01 00 00 0a 00 14 00
+          12 00 1d 00 17 00 18 00 19 01 00 01 01 01 02 01 03 01 04 00 23
+          00 00 00 33 00 26 00 24 00 1d 00 20 99 38 1d e5 60 e4 bd 43 d2
+          3d 8e 43 5a 7d ba fe b3 c0 6e 51 c1 3c ae 4d 54 13 69 1e 52 9a
+          af 2c 00 2b 00 03 02 03 04 00 0d 00 20 00 1e 04 03 05 03 06 03
+          02 03 08 04 08 05 08 06 04 01 05 01 06 01 02 01 04 02 05 02 06
+          02 02 02 00 2d 00 02 01 01 00 1c 00 02 40 01"),
+
+    ClientHelloRecord =
+        %% Current implementation always sets
+        %% legacy_record_version to Ox0303
+        hexstr2bin("16 03 03 00 c4 01 00 00 c0 03 03 cb
+          34 ec b1 e7 81 63 ba 1c 38 c6 da cb 19 6a 6d ff a2 1a 8d 99 12
+          ec 18 a2 ef 62 83 02 4d ec e7 00 00 06 13 01 13 03 13 02 01 00
+          00 91 00 00 00 0b 00 09 00 00 06 73 65 72 76 65 72 ff 01 00 01
+          00 00 0a 00 14 00 12 00 1d 00 17 00 18 00 19 01 00 01 01 01 02
+          01 03 01 04 00 23 00 00 00 33 00 26 00 24 00 1d 00 20 99 38 1d
+          e5 60 e4 bd 43 d2 3d 8e 43 5a 7d ba fe b3 c0 6e 51 c1 3c ae 4d
+          54 13 69 1e 52 9a af 2c 00 2b 00 03 02 03 04 00 0d 00 20 00 1e
+          04 03 05 03 06 03 02 03 08 04 08 05 08 06 04 01 05 01 06 01 02
+          01 04 02 05 02 06 02 02 02 00 2d 00 02 01 01 00 1c 00 02 40 01"),
+
+    {CHEncrypted, _} =
+	tls_record:encode_handshake(ClientHello, {3,4}, ConnStatesNull),
+    ClientHelloRecord = iolist_to_binary(CHEncrypted),
+
+    %% {server}  extract secret "early":
+    %%
+    %%    salt:  0 (all zero octets)
+    %%
+    %%    IKM (32 octets):  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+    %%                      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+    %%
+    %%    secret (32 octets):  33 ad 0a 1c 60 7e c0 3b 09 e6 cd 98 93 68 0c
+    %%       e2 10 ad f3 00 aa 1f 26 60 e1 b2 2e 10 f1 70 f9 2a
+    HKDFAlgo = sha256,
+    Salt = binary:copy(<<?BYTE(0)>>, 32),
+    IKM = binary:copy(<<?BYTE(0)>>, 32),
+    EarlySecret =
+        hexstr2bin("33 ad 0a 1c 60 7e c0 3b 09 e6 cd 98 93 68 0c
+          e2 10 ad f3 00 aa 1f 26 60 e1 b2 2e 10 f1 70 f9 2a"),
+
+    {early_secret, EarlySecret} = tls_v1:key_schedule(early_secret, HKDFAlgo, {psk, Salt}),
+
+    %% {client}  create an ephemeral x25519 key pair:
+    %%
+    %%    private key (32 octets):  49 af 42 ba 7f 79 94 85 2d 71 3e f2 78
+    %%       4b cb ca a7 91 1d e2 6a dc 56 42 cb 63 45 40 e7 ea 50 05
+    %%
+    %%    public key (32 octets):  99 38 1d e5 60 e4 bd 43 d2 3d 8e 43 5a 7d
+    %%       ba fe b3 c0 6e 51 c1 3c ae 4d 54 13 69 1e 52 9a af 2c
+    CPublicKey =
+        hexstr2bin("99 38 1d e5 60 e4 bd 43 d2 3d 8e 43 5a 7d
+          ba fe b3 c0 6e 51 c1 3c ae 4d 54 13 69 1e 52 9a af 2c"),
+
+    %% {server}  create an ephemeral x25519 key pair:
+    %%
+    %%   private key (32 octets):  b1 58 0e ea df 6d d5 89 b8 ef 4f 2d 56
+    %%      52 57 8c c8 10 e9 98 01 91 ec 8d 05 83 08 ce a2 16 a2 1e
+    %%
+    %%   public key (32 octets):  c9 82 88 76 11 20 95 fe 66 76 2b db f7 c6
+    %%      72 e1 56 d6 cc 25 3b 83 3d f1 dd 69 b1 b0 4e 75 1f 0f
+    SPrivateKey =
+        hexstr2bin("b1 58 0e ea df 6d d5 89 b8 ef 4f 2d 56
+         52 57 8c c8 10 e9 98 01 91 ec 8d 05 83 08 ce a2 16 a2 1e"),
+
+    SPublicKey =
+        hexstr2bin("c9 82 88 76 11 20 95 fe 66 76 2b db f7 c6
+         72 e1 56 d6 cc 25 3b 83 3d f1 dd 69 b1 b0 4e 75 1f 0f"),
+
+    %% {server}  construct a ServerHello handshake message:
+    %%
+    %%    ServerHello (90 octets):  02 00 00 56 03 03 a6 af 06 a4 12 18 60
+    %%       dc 5e 6e 60 24 9c d3 4c 95 93 0c 8a c5 cb 14 34 da c1 55 77 2e
+    %%       d3 e2 69 28 00 13 01 00 00 2e 00 33 00 24 00 1d 00 20 c9 82 88
+    %%       76 11 20 95 fe 66 76 2b db f7 c6 72 e1 56 d6 cc 25 3b 83 3d f1
+    %%       dd 69 b1 b0 4e 75 1f 0f 00 2b 00 02 03 04
+    ServerHello =
+        hexstr2bin("02 00 00 56 03 03 a6 af 06 a4 12 18 60
+          dc 5e 6e 60 24 9c d3 4c 95 93 0c 8a c5 cb 14 34 da c1 55 77 2e
+          d3 e2 69 28 00 13 01 00 00 2e 00 33 00 24 00 1d 00 20 c9 82 88
+          76 11 20 95 fe 66 76 2b db f7 c6 72 e1 56 d6 cc 25 3b 83 3d f1
+          dd 69 b1 b0 4e 75 1f 0f 00 2b 00 02 03 04"),
+
+    %% {server}  derive secret for handshake "tls13 derived":
+    %%
+    %%    PRK (32 octets):  33 ad 0a 1c 60 7e c0 3b 09 e6 cd 98 93 68 0c e2
+    %%       10 ad f3 00 aa 1f 26 60 e1 b2 2e 10 f1 70 f9 2a
+    %%
+    %%    hash (32 octets):  e3 b0 c4 42 98 fc 1c 14 9a fb f4 c8 99 6f b9 24
+    %%       27 ae 41 e4 64 9b 93 4c a4 95 99 1b 78 52 b8 55
+    %%
+    %%    info (49 octets):  00 20 0d 74 6c 73 31 33 20 64 65 72 69 76 65 64
+    %%       20 e3 b0 c4 42 98 fc 1c 14 9a fb f4 c8 99 6f b9 24 27 ae 41 e4
+    %%       64 9b 93 4c a4 95 99 1b 78 52 b8 55
+    %%
+    %%    expanded (32 octets):  6f 26 15 a1 08 c7 02 c5 67 8f 54 fc 9d ba
+    %%       b6 97 16 c0 76 18 9c 48 25 0c eb ea c3 57 6c 36 11 ba
+    Hash =
+        hexstr2bin("e3 b0 c4 42 98 fc 1c 14 9a fb f4 c8 99 6f b9 24
+          27 ae 41 e4 64 9b 93 4c a4 95 99 1b 78 52 b8 55"),
+
+    Hash = crypto:hash(HKDFAlgo, <<>>),
+
+    Info =
+        hexstr2bin("00 20 0d 74 6c 73 31 33 20 64 65 72 69 76 65 64
+          20 e3 b0 c4 42 98 fc 1c 14 9a fb f4 c8 99 6f b9 24 27 ae 41 e4
+          64 9b 93 4c a4 95 99 1b 78 52 b8 55"),
+
+    Info = tls_v1:create_info(<<"derived">>, Hash,  ssl_cipher:hash_size(HKDFAlgo)),
+
+    Expanded =
+        hexstr2bin("6f 26 15 a1 08 c7 02 c5 67 8f 54 fc 9d ba
+          b6 97 16 c0 76 18 9c 48 25 0c eb ea c3 57 6c 36 11 ba"),
+
+    Expanded = tls_v1:derive_secret(EarlySecret, <<"derived">>, <<>>, HKDFAlgo),
+
+    %% {server}  extract secret "handshake":
+    %%
+    %%    salt (32 octets):  6f 26 15 a1 08 c7 02 c5 67 8f 54 fc 9d ba b6 97
+    %%       16 c0 76 18 9c 48 25 0c eb ea c3 57 6c 36 11 ba
+    %%
+    %%    IKM (32 octets):  8b d4 05 4f b5 5b 9d 63 fd fb ac f9 f0 4b 9f 0d
+    %%       35 e6 d6 3f 53 75 63 ef d4 62 72 90 0f 89 49 2d
+    %%
+    %%    secret (32 octets):  1d c8 26 e9 36 06 aa 6f dc 0a ad c1 2f 74 1b
+    %%       01 04 6a a6 b9 9f 69 1e d2 21 a9 f0 ca 04 3f be ac
+
+    %% salt = Expanded
+    HandshakeIKM =
+        hexstr2bin("8b d4 05 4f b5 5b 9d 63 fd fb ac f9 f0 4b 9f 0d
+          35 e6 d6 3f 53 75 63 ef d4 62 72 90 0f 89 49 2d"),
+
+    HandshakeSecret =
+        hexstr2bin("1d c8 26 e9 36 06 aa 6f dc 0a ad c1 2f 74 1b
+          01 04 6a a6 b9 9f 69 1e d2 21 a9 f0 ca 04 3f be ac"),
+
+    HandshakeIKM = crypto:compute_key(ecdh, CPublicKey, SPrivateKey, x25519),
+
+    {handshake_secret, HandshakeSecret} =
+        tls_v1:key_schedule(handshake_secret, HKDFAlgo, HandshakeIKM,
+                            {early_secret, EarlySecret}),
+
+    %% {server}  derive secret "tls13 c hs traffic":
+    %%
+    %%    PRK (32 octets):  1d c8 26 e9 36 06 aa 6f dc 0a ad c1 2f 74 1b 01
+    %%       04 6a a6 b9 9f 69 1e d2 21 a9 f0 ca 04 3f be ac
+    %%
+    %%    hash (32 octets):  86 0c 06 ed c0 78 58 ee 8e 78 f0 e7 42 8c 58 ed
+    %%       d6 b4 3f 2c a3 e6 e9 5f 02 ed 06 3c f0 e1 ca d8
+    %%
+    %%    info (54 octets):  00 20 12 74 6c 73 31 33 20 63 20 68 73 20 74 72
+    %%       61 66 66 69 63 20 86 0c 06 ed c0 78 58 ee 8e 78 f0 e7 42 8c 58
+    %%       ed d6 b4 3f 2c a3 e6 e9 5f 02 ed 06 3c f0 e1 ca d8
+    %%
+    %%    expanded (32 octets):  b3 ed db 12 6e 06 7f 35 a7 80 b3 ab f4 5e
+    %%       2d 8f 3b 1a 95 07 38 f5 2e 96 00 74 6a 0e 27 a5 5a 21
+
+    %% PRK = HandshakeSecret
+    CHSTHash =
+        hexstr2bin("86 0c 06 ed c0 78 58 ee 8e 78 f0 e7 42 8c 58 ed
+          d6 b4 3f 2c a3 e6 e9 5f 02 ed 06 3c f0 e1 ca d8"),
+
+    CHSTInfo =
+        hexstr2bin("00 20 12 74 6c 73 31 33 20 63 20 68 73 20 74 72
+          61 66 66 69 63 20 86 0c 06 ed c0 78 58 ee 8e 78 f0 e7 42 8c 58
+          ed d6 b4 3f 2c a3 e6 e9 5f 02 ed 06 3c f0 e1 ca d8"),
+
+    CHSTrafficSecret =
+        hexstr2bin(" b3 ed db 12 6e 06 7f 35 a7 80 b3 ab f4 5e
+          2d 8f 3b 1a 95 07 38 f5 2e 96 00 74 6a 0e 27 a5 5a 21"),
+
+    CHSH =  <<ClientHello/binary,ServerHello/binary>>,
+    CHSTHash = crypto:hash(HKDFAlgo, CHSH),
+    CHSTInfo =  tls_v1:create_info(<<"c hs traffic">>, CHSTHash,  ssl_cipher:hash_size(HKDFAlgo)),
+
+    CHSTrafficSecret =
+        tls_v1:client_handshake_traffic_secret(HKDFAlgo, {handshake_secret, HandshakeSecret}, CHSH),
+
+    %% {server}  derive secret "tls13 s hs traffic":
+    %%
+    %%    PRK (32 octets):  1d c8 26 e9 36 06 aa 6f dc 0a ad c1 2f 74 1b 01
+    %%       04 6a a6 b9 9f 69 1e d2 21 a9 f0 ca 04 3f be ac
+    %%
+    %%    hash (32 octets):  86 0c 06 ed c0 78 58 ee 8e 78 f0 e7 42 8c 58 ed
+    %%       d6 b4 3f 2c a3 e6 e9 5f 02 ed 06 3c f0 e1 ca d8
+    %%
+    %%    info (54 octets):  00 20 12 74 6c 73 31 33 20 73 20 68 73 20 74 72
+    %%       61 66 66 69 63 20 86 0c 06 ed c0 78 58 ee 8e 78 f0 e7 42 8c 58
+    %%       ed d6 b4 3f 2c a3 e6 e9 5f 02 ed 06 3c f0 e1 ca d8
+    %%
+    %%    expanded (32 octets):  b6 7b 7d 69 0c c1 6c 4e 75 e5 42 13 cb 2d
+    %%       37 b4 e9 c9 12 bc de d9 10 5d 42 be fd 59 d3 91 ad 38
+
+    %% PRK = HandshakeSecret
+    %% hash = CHSTHash
+    SHSTInfo =
+        hexstr2bin("00 20 12 74 6c 73 31 33 20 73 20 68 73 20 74 72
+          61 66 66 69 63 20 86 0c 06 ed c0 78 58 ee 8e 78 f0 e7 42 8c 58
+          ed d6 b4 3f 2c a3 e6 e9 5f 02 ed 06 3c f0 e1 ca d8"),
+
+    SHSTrafficSecret =
+        hexstr2bin("b6 7b 7d 69 0c c1 6c 4e 75 e5 42 13 cb 2d
+          37 b4 e9 c9 12 bc de d9 10 5d 42 be fd 59 d3 91 ad 38"),
+
+    SHSTInfo =  tls_v1:create_info(<<"s hs traffic">>, CHSTHash,  ssl_cipher:hash_size(HKDFAlgo)),
+
+    SHSTrafficSecret =
+        tls_v1:server_handshake_traffic_secret(HKDFAlgo, {handshake_secret, HandshakeSecret}, CHSH),
+
+
+    %% {server}  derive secret for master "tls13 derived":
+    %%
+    %%    PRK (32 octets):  1d c8 26 e9 36 06 aa 6f dc 0a ad c1 2f 74 1b 01
+    %%       04 6a a6 b9 9f 69 1e d2 21 a9 f0 ca 04 3f be ac
+    %%
+    %%    hash (32 octets):  e3 b0 c4 42 98 fc 1c 14 9a fb f4 c8 99 6f b9 24
+    %%       27 ae 41 e4 64 9b 93 4c a4 95 99 1b 78 52 b8 55
+    %%
+    %%    info (49 octets):  00 20 0d 74 6c 73 31 33 20 64 65 72 69 76 65 64
+    %%       20 e3 b0 c4 42 98 fc 1c 14 9a fb f4 c8 99 6f b9 24 27 ae 41 e4
+    %%       64 9b 93 4c a4 95 99 1b 78 52 b8 55
+    %%
+    %%    expanded (32 octets):  43 de 77 e0 c7 77 13 85 9a 94 4d b9 db 25
+    %%       90 b5 31 90 a6 5b 3e e2 e4 f1 2d d7 a0 bb 7c e2 54 b4
+
+    %% PRK = HandshakeSecret
+    %% hash = Hash
+    %% info = Info
+    MasterDeriveSecret =
+        hexstr2bin("43 de 77 e0 c7 77 13 85 9a 94 4d b9 db 25
+          90 b5 31 90 a6 5b 3e e2 e4 f1 2d d7 a0 bb 7c e2 54 b4"),
+
+    MasterDeriveSecret = tls_v1:derive_secret(HandshakeSecret, <<"derived">>, <<>>, HKDFAlgo),
+
+    %% {server}  extract secret "master":
+    %%
+    %%    salt (32 octets):  43 de 77 e0 c7 77 13 85 9a 94 4d b9 db 25 90 b5
+    %%       31 90 a6 5b 3e e2 e4 f1 2d d7 a0 bb 7c e2 54 b4
+    %%
+    %%    IKM (32 octets):  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+    %%       00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+    %%
+    %%    secret (32 octets):  18 df 06 84 3d 13 a0 8b f2 a4 49 84 4c 5f 8a
+    %%       47 80 01 bc 4d 4c 62 79 84 d5 a4 1d a8 d0 40 29 19
+
+    %% salt = MasterDeriveSecret
+    %% IKM = IKM
+    MasterSecret =
+        hexstr2bin("18 df 06 84 3d 13 a0 8b f2 a4 49 84 4c 5f 8a
+          47 80 01 bc 4d 4c 62 79 84 d5 a4 1d a8 d0 40 29 19"),
+
+    {master_secret, MasterSecret} =
+        tls_v1:key_schedule(master_secret, HKDFAlgo, {handshake_secret, HandshakeSecret}),
+
+    %% {server}  send handshake record:
+    %%
+    %%    payload (90 octets):  02 00 00 56 03 03 a6 af 06 a4 12 18 60 dc 5e
+    %%       6e 60 24 9c d3 4c 95 93 0c 8a c5 cb 14 34 da c1 55 77 2e d3 e2
+    %%       69 28 00 13 01 00 00 2e 00 33 00 24 00 1d 00 20 c9 82 88 76 11
+    %%       20 95 fe 66 76 2b db f7 c6 72 e1 56 d6 cc 25 3b 83 3d f1 dd 69
+    %%       b1 b0 4e 75 1f 0f 00 2b 00 02 03 04
+    %%
+    %%    complete record (95 octets):  16 03 03 00 5a 02 00 00 56 03 03 a6
+    %%       af 06 a4 12 18 60 dc 5e 6e 60 24 9c d3 4c 95 93 0c 8a c5 cb 14
+    %%       34 da c1 55 77 2e d3 e2 69 28 00 13 01 00 00 2e 00 33 00 24 00
+    %%       1d 00 20 c9 82 88 76 11 20 95 fe 66 76 2b db f7 c6 72 e1 56 d6
+    %%       cc 25 3b 83 3d f1 dd 69 b1 b0 4e 75 1f 0f 00 2b 00 02 03 04
+
+    %% payload = ServerHello
+    ServerHelloRecord =
+        hexstr2bin("16 03 03 00 5a 02 00 00 56 03 03 a6
+          af 06 a4 12 18 60 dc 5e 6e 60 24 9c d3 4c 95 93 0c 8a c5 cb 14
+          34 da c1 55 77 2e d3 e2 69 28 00 13 01 00 00 2e 00 33 00 24 00
+          1d 00 20 c9 82 88 76 11 20 95 fe 66 76 2b db f7 c6 72 e1 56 d6
+          cc 25 3b 83 3d f1 dd 69 b1 b0 4e 75 1f 0f 00 2b 00 02 03 04"),
+
+    {SHEncrypted, _} =
+	tls_record:encode_handshake(ServerHello, {3,4}, ConnStatesNull),
+    ServerHelloRecord = iolist_to_binary(SHEncrypted),
+
+    %% {server}  derive write traffic keys for handshake data:
+    %%
+    %%    PRK (32 octets):  b6 7b 7d 69 0c c1 6c 4e 75 e5 42 13 cb 2d 37 b4
+    %%       e9 c9 12 bc de d9 10 5d 42 be fd 59 d3 91 ad 38
+    %%
+    %%    key info (13 octets):  00 10 09 74 6c 73 31 33 20 6b 65 79 00
+    %%
+    %%    key expanded (16 octets):  3f ce 51 60 09 c2 17 27 d0 f2 e4 e8 6e
+    %%       e4 03 bc
+    %%
+    %%    iv info (12 octets):  00 0c 08 74 6c 73 31 33 20 69 76 00
+    %%
+    %%    iv expanded (12 octets):  5d 31 3e b2 67 12 76 ee 13 00 0b 30
+
+    %% PRK = SHSTrafficSecret
+    WriteKeyInfo =
+        hexstr2bin("00 10 09 74 6c 73 31 33 20 6b 65 79 00"),
+
+    WriteKey =
+        hexstr2bin("3f ce 51 60 09 c2 17 27 d0 f2 e4 e8 6e e4 03 bc"),
+
+    WriteIVInfo =
+        hexstr2bin("00 0c 08 74 6c 73 31 33 20 69 76 00"),
+
+    WriteIV =
+        hexstr2bin(" 5d 31 3e b2 67 12 76 ee 13 00 0b 30"),
+
+    Cipher = aes_128_gcm, %% TODO: get from ServerHello
+
+    WriteKeyInfo = tls_v1:create_info(<<"key">>, <<>>,  ssl_cipher:key_material(Cipher)),
+    %% TODO: remove hardcoded IV size
+    WriteIVInfo = tls_v1:create_info(<<"iv">>, <<>>,  12),
+
+    {WriteKey, WriteIV} = tls_v1:calculate_traffic_keys(HKDFAlgo, Cipher, SHSTrafficSecret),
+
+    %% {server}  construct an EncryptedExtensions handshake message:
+    %%
+    %%    EncryptedExtensions (40 octets):  08 00 00 24 00 22 00 0a 00 14 00
+    %%       12 00 1d 00 17 00 18 00 19 01 00 01 01 01 02 01 03 01 04 00 1c
+    %%       00 02 40 01 00 00 00 00
+    %%
+    %% {server}  construct a Certificate handshake message:
+    %%
+    %%    Certificate (445 octets):  0b 00 01 b9 00 00 01 b5 00 01 b0 30 82
+    %%       01 ac 30 82 01 15 a0 03 02 01 02 02 01 02 30 0d 06 09 2a 86 48
+    %%       86 f7 0d 01 01 0b 05 00 30 0e 31 0c 30 0a 06 03 55 04 03 13 03
+    %%       72 73 61 30 1e 17 0d 31 36 30 37 33 30 30 31 32 33 35 39 5a 17
+    %%       0d 32 36 30 37 33 30 30 31 32 33 35 39 5a 30 0e 31 0c 30 0a 06
+    %%       03 55 04 03 13 03 72 73 61 30 81 9f 30 0d 06 09 2a 86 48 86 f7
+    %%       0d 01 01 01 05 00 03 81 8d 00 30 81 89 02 81 81 00 b4 bb 49 8f
+    %%       82 79 30 3d 98 08 36 39 9b 36 c6 98 8c 0c 68 de 55 e1 bd b8 26
+    %%       d3 90 1a 24 61 ea fd 2d e4 9a 91 d0 15 ab bc 9a 95 13 7a ce 6c
+    %%       1a f1 9e aa 6a f9 8c 7c ed 43 12 09 98 e1 87 a8 0e e0 cc b0 52
+    %%       4b 1b 01 8c 3e 0b 63 26 4d 44 9a 6d 38 e2 2a 5f da 43 08 46 74
+    %%       80 30 53 0e f0 46 1c 8c a9 d9 ef bf ae 8e a6 d1 d0 3e 2b d1 93
+    %%       ef f0 ab 9a 80 02 c4 74 28 a6 d3 5a 8d 88 d7 9f 7f 1e 3f 02 03
+    %%       01 00 01 a3 1a 30 18 30 09 06 03 55 1d 13 04 02 30 00 30 0b 06
+    %%       03 55 1d 0f 04 04 03 02 05 a0 30 0d 06 09 2a 86 48 86 f7 0d 01
+    %%       01 0b 05 00 03 81 81 00 85 aa d2 a0 e5 b9 27 6b 90 8c 65 f7 3a
+    %%       72 67 17 06 18 a5 4c 5f 8a 7b 33 7d 2d f7 a5 94 36 54 17 f2 ea
+    %%       e8 f8 a5 8c 8f 81 72 f9 31 9c f3 6b 7f d6 c5 5b 80 f2 1a 03 01
+    %%       51 56 72 60 96 fd 33 5e 5e 67 f2 db f1 02 70 2e 60 8c ca e6 be
+    %%       c1 fc 63 a4 2a 99 be 5c 3e b7 10 7c 3c 54 e9 b9 eb 2b d5 20 3b
+    %%       1c 3b 84 e0 a8 b2 f7 59 40 9b a3 ea c9 d9 1d 40 2d cc 0c c8 f8
+    %%       96 12 29 ac 91 87 b4 2b 4d e1 00 00
+    %%
+    %% {server}  construct a CertificateVerify handshake message:
+    %%
+    %%    CertificateVerify (136 octets):  0f 00 00 84 08 04 00 80 5a 74 7c
+    %%       5d 88 fa 9b d2 e5 5a b0 85 a6 10 15 b7 21 1f 82 4c d4 84 14 5a
+    %%       b3 ff 52 f1 fd a8 47 7b 0b 7a bc 90 db 78 e2 d3 3a 5c 14 1a 07
+    %%       86 53 fa 6b ef 78 0c 5e a2 48 ee aa a7 85 c4 f3 94 ca b6 d3 0b
+    %%       be 8d 48 59 ee 51 1f 60 29 57 b1 54 11 ac 02 76 71 45 9e 46 44
+    %%       5c 9e a5 8c 18 1e 81 8e 95 b8 c3 fb 0b f3 27 84 09 d3 be 15 2a
+    %%       3d a5 04 3e 06 3d da 65 cd f5 ae a2 0d 53 df ac d4 2f 74 f3
+    EncryptedExtensions =
+        hexstr2bin("08 00 00 24 00 22 00 0a 00 14 00
+          12 00 1d 00 17 00 18 00 19 01 00 01 01 01 02 01 03 01 04 00 1c
+          00 02 40 01 00 00 00 00"),
+
+    Certificate =
+        hexstr2bin("0b 00 01 b9 00 00 01 b5 00 01 b0 30 82
+          01 ac 30 82 01 15 a0 03 02 01 02 02 01 02 30 0d 06 09 2a 86 48
+          86 f7 0d 01 01 0b 05 00 30 0e 31 0c 30 0a 06 03 55 04 03 13 03
+          72 73 61 30 1e 17 0d 31 36 30 37 33 30 30 31 32 33 35 39 5a 17
+          0d 32 36 30 37 33 30 30 31 32 33 35 39 5a 30 0e 31 0c 30 0a 06
+          03 55 04 03 13 03 72 73 61 30 81 9f 30 0d 06 09 2a 86 48 86 f7
+          0d 01 01 01 05 00 03 81 8d 00 30 81 89 02 81 81 00 b4 bb 49 8f
+          82 79 30 3d 98 08 36 39 9b 36 c6 98 8c 0c 68 de 55 e1 bd b8 26
+          d3 90 1a 24 61 ea fd 2d e4 9a 91 d0 15 ab bc 9a 95 13 7a ce 6c
+          1a f1 9e aa 6a f9 8c 7c ed 43 12 09 98 e1 87 a8 0e e0 cc b0 52
+          4b 1b 01 8c 3e 0b 63 26 4d 44 9a 6d 38 e2 2a 5f da 43 08 46 74
+          80 30 53 0e f0 46 1c 8c a9 d9 ef bf ae 8e a6 d1 d0 3e 2b d1 93
+          ef f0 ab 9a 80 02 c4 74 28 a6 d3 5a 8d 88 d7 9f 7f 1e 3f 02 03
+          01 00 01 a3 1a 30 18 30 09 06 03 55 1d 13 04 02 30 00 30 0b 06
+          03 55 1d 0f 04 04 03 02 05 a0 30 0d 06 09 2a 86 48 86 f7 0d 01
+          01 0b 05 00 03 81 81 00 85 aa d2 a0 e5 b9 27 6b 90 8c 65 f7 3a
+          72 67 17 06 18 a5 4c 5f 8a 7b 33 7d 2d f7 a5 94 36 54 17 f2 ea
+          e8 f8 a5 8c 8f 81 72 f9 31 9c f3 6b 7f d6 c5 5b 80 f2 1a 03 01
+          51 56 72 60 96 fd 33 5e 5e 67 f2 db f1 02 70 2e 60 8c ca e6 be
+          c1 fc 63 a4 2a 99 be 5c 3e b7 10 7c 3c 54 e9 b9 eb 2b d5 20 3b
+          1c 3b 84 e0 a8 b2 f7 59 40 9b a3 ea c9 d9 1d 40 2d cc 0c c8 f8
+          96 12 29 ac 91 87 b4 2b 4d e1 00 00"),
+
+    CertificateVerify =
+        hexstr2bin("0f 00 00 84 08 04 00 80 5a 74 7c
+          5d 88 fa 9b d2 e5 5a b0 85 a6 10 15 b7 21 1f 82 4c d4 84 14 5a
+          b3 ff 52 f1 fd a8 47 7b 0b 7a bc 90 db 78 e2 d3 3a 5c 14 1a 07
+          86 53 fa 6b ef 78 0c 5e a2 48 ee aa a7 85 c4 f3 94 ca b6 d3 0b
+          be 8d 48 59 ee 51 1f 60 29 57 b1 54 11 ac 02 76 71 45 9e 46 44
+          5c 9e a5 8c 18 1e 81 8e 95 b8 c3 fb 0b f3 27 84 09 d3 be 15 2a
+          3d a5 04 3e 06 3d da 65 cd f5 ae a2 0d 53 df ac d4 2f 74 f3"),
+
+    %% {server}  calculate finished "tls13 finished":
+    %%
+    %%    PRK (32 octets):  b6 7b 7d 69 0c c1 6c 4e 75 e5 42 13 cb 2d 37 b4
+    %%       e9 c9 12 bc de d9 10 5d 42 be fd 59 d3 91 ad 38
+    %%
+    %%    hash (0 octets):  (empty)
+    %%
+    %%    info (18 octets):  00 20 0e 74 6c 73 31 33 20 66 69 6e 69 73 68 65
+    %%       64 00
+    %%
+    %%    expanded (32 octets):  00 8d 3b 66 f8 16 ea 55 9f 96 b5 37 e8 85
+    %%       c3 1f c0 68 bf 49 2c 65 2f 01 f2 88 a1 d8 cd c1 9f c8
+    %%
+    %%    finished (32 octets):  9b 9b 14 1d 90 63 37 fb d2 cb dc e7 1d f4
+    %%       de da 4a b4 2c 30 95 72 cb 7f ff ee 54 54 b7 8f 07 18
+
+    %% PRK = SHSTrafficSecret
+    FInfo =
+        hexstr2bin("00 20 0e 74 6c 73 31 33 20 66 69 6e 69 73 68 65
+          64 00"),
+
+    FExpanded =
+        hexstr2bin("00 8d 3b 66 f8 16 ea 55 9f 96 b5 37 e8 85
+          c3 1f c0 68 bf 49 2c 65 2f 01 f2 88 a1 d8 cd c1 9f c8"),
+
+    FinishedVerifyData =
+        hexstr2bin("9b 9b 14 1d 90 63 37 fb d2 cb dc e7 1d f4
+          de da 4a b4 2c 30 95 72 cb 7f ff ee 54 54 b7 8f 07 18"),
+
+    FInfo = tls_v1:create_info(<<"finished">>, <<>>,  ssl_cipher:hash_size(HKDFAlgo)),
+
+    FExpanded = tls_v1:finished_key(SHSTrafficSecret, HKDFAlgo),
+
+    MessageHistory0 = [CertificateVerify,
+                       Certificate,
+                       EncryptedExtensions,
+                       ServerHello,
+                       ClientHello],
+
+    FinishedVerifyData = tls_v1:finished_verify_data(FExpanded, HKDFAlgo, MessageHistory0),
+
+    %% {server}  construct a Finished handshake message:
+    %%
+    %%    Finished (36 octets):  14 00 00 20 9b 9b 14 1d 90 63 37 fb d2 cb
+    %%       dc e7 1d f4 de da 4a b4 2c 30 95 72 cb 7f ff ee 54 54 b7 8f 07
+    %%       18
+    FinishedHSBin =
+        hexstr2bin("14 00 00 20 9b 9b 14 1d 90 63 37 fb d2 cb
+          dc e7 1d f4 de da 4a b4 2c 30 95 72 cb 7f ff ee 54 54 b7 8f 07
+          18"),
+
+    FinishedHS = #finished{verify_data = FinishedVerifyData},
+
+    FinishedIOList = tls_handshake:encode_handshake(FinishedHS, {3,4}),
+    FinishedHSBin = iolist_to_binary(FinishedIOList),
+
+    %% {server}  derive secret "tls13 c ap traffic":
+    %%
+    %%    PRK (32 octets):  18 df 06 84 3d 13 a0 8b f2 a4 49 84 4c 5f 8a 47
+    %%       80 01 bc 4d 4c 62 79 84 d5 a4 1d a8 d0 40 29 19
+    %%
+    %%    hash (32 octets):  96 08 10 2a 0f 1c cc 6d b6 25 0b 7b 7e 41 7b 1a
+    %%       00 0e aa da 3d aa e4 77 7a 76 86 c9 ff 83 df 13
+    %%
+    %%    info (54 octets):  00 20 12 74 6c 73 31 33 20 63 20 61 70 20 74 72
+    %%       61 66 66 69 63 20 96 08 10 2a 0f 1c cc 6d b6 25 0b 7b 7e 41 7b
+    %%       1a 00 0e aa da 3d aa e4 77 7a 76 86 c9 ff 83 df 13
+    %%
+    %%    expanded (32 octets):  9e 40 64 6c e7 9a 7f 9d c0 5a f8 88 9b ce
+    %%       65 52 87 5a fa 0b 06 df 00 87 f7 92 eb b7 c1 75 04 a5
+
+    %% PRK = MasterSecret
+    CAPTHash =
+        hexstr2bin("96 08 10 2a 0f 1c cc 6d b6 25 0b 7b 7e 41 7b 1a
+          00 0e aa da 3d aa e4 77 7a 76 86 c9 ff 83 df 13"),
+    CAPTInfo =
+        hexstr2bin("00 20 12 74 6c 73 31 33 20 63 20 61 70 20 74 72
+          61 66 66 69 63 20 96 08 10 2a 0f 1c cc 6d b6 25 0b 7b 7e 41 7b
+          1a 00 0e aa da 3d aa e4 77 7a 76 86 c9 ff 83 df 13"),
+
+    CAPTrafficSecret =
+        hexstr2bin("9e 40 64 6c e7 9a 7f 9d c0 5a f8 88 9b ce
+          65 52 87 5a fa 0b 06 df 00 87 f7 92 eb b7 c1 75 04 a5"),
+
+    CHSF = <<ClientHello/binary,
+             ServerHello/binary,
+             EncryptedExtensions/binary,
+             Certificate/binary,
+             CertificateVerify/binary,
+             FinishedHSBin/binary>>,
+
+    CAPTHash = crypto:hash(HKDFAlgo, CHSF),
+
+    CAPTInfo =
+        tls_v1:create_info(<<"c ap traffic">>, CAPTHash, ssl_cipher:hash_size(HKDFAlgo)),
+
+    CAPTrafficSecret =
+        tls_v1:client_application_traffic_secret_0(HKDFAlgo, {master_secret, MasterSecret}, CHSF),
+
+    %% {server}  derive secret "tls13 s ap traffic":
+    %%
+    %%    PRK (32 octets):  18 df 06 84 3d 13 a0 8b f2 a4 49 84 4c 5f 8a 47
+    %%       80 01 bc 4d 4c 62 79 84 d5 a4 1d a8 d0 40 29 19
+    %%
+    %%    hash (32 octets):  96 08 10 2a 0f 1c cc 6d b6 25 0b 7b 7e 41 7b 1a
+    %%       00 0e aa da 3d aa e4 77 7a 76 86 c9 ff 83 df 13
+    %%
+    %%    info (54 octets):  00 20 12 74 6c 73 31 33 20 73 20 61 70 20 74 72
+    %%       61 66 66 69 63 20 96 08 10 2a 0f 1c cc 6d b6 25 0b 7b 7e 41 7b
+    %%       1a 00 0e aa da 3d aa e4 77 7a 76 86 c9 ff 83 df 13
+    %%
+    %%    expanded (32 octets):  a1 1a f9 f0 55 31 f8 56 ad 47 11 6b 45 a9
+    %%       50 32 82 04 b4 f4 4b fb 6b 3a 4b 4f 1f 3f cb 63 16 43
+
+    %% PRK = MasterSecret
+    %% hash = CAPTHash
+    SAPTInfo =
+        hexstr2bin(" 00 20 12 74 6c 73 31 33 20 73 20 61 70 20 74 72
+          61 66 66 69 63 20 96 08 10 2a 0f 1c cc 6d b6 25 0b 7b 7e 41 7b
+          1a 00 0e aa da 3d aa e4 77 7a 76 86 c9 ff 83 df 13"),
+
+    SAPTrafficSecret =
+        hexstr2bin("a1 1a f9 f0 55 31 f8 56 ad 47 11 6b 45 a9
+          50 32 82 04 b4 f4 4b fb 6b 3a 4b 4f 1f 3f cb 63 16 43"),
+
+    SAPTInfo =
+        tls_v1:create_info(<<"s ap traffic">>, CAPTHash, ssl_cipher:hash_size(HKDFAlgo)),
+
+    SAPTrafficSecret =
+        tls_v1:server_application_traffic_secret_0(HKDFAlgo, {master_secret, MasterSecret}, CHSF),
+
+    %% {server}  derive secret "tls13 exp master":
+    %%
+    %%    PRK (32 octets):  18 df 06 84 3d 13 a0 8b f2 a4 49 84 4c 5f 8a 47
+    %%       80 01 bc 4d 4c 62 79 84 d5 a4 1d a8 d0 40 29 19
+    %%
+    %%    hash (32 octets):  96 08 10 2a 0f 1c cc 6d b6 25 0b 7b 7e 41 7b 1a
+    %%       00 0e aa da 3d aa e4 77 7a 76 86 c9 ff 83 df 13
+    %%
+    %%    info (52 octets):  00 20 10 74 6c 73 31 33 20 65 78 70 20 6d 61 73
+    %%       74 65 72 20 96 08 10 2a 0f 1c cc 6d b6 25 0b 7b 7e 41 7b 1a 00
+    %%       0e aa da 3d aa e4 77 7a 76 86 c9 ff 83 df 13
+    %%
+    %%    expanded (32 octets):  fe 22 f8 81 17 6e da 18 eb 8f 44 52 9e 67
+    %%       92 c5 0c 9a 3f 89 45 2f 68 d8 ae 31 1b 43 09 d3 cf 50
+
+    %% PRK = MasterSecret
+    %% hash = CAPTHash
+    ExporterInfo =
+        hexstr2bin("00 20 10 74 6c 73 31 33 20 65 78 70 20 6d 61 73
+          74 65 72 20 96 08 10 2a 0f 1c cc 6d b6 25 0b 7b 7e 41 7b 1a 00
+          0e aa da 3d aa e4 77 7a 76 86 c9 ff 83 df 13"),
+
+    ExporterMasterSecret =
+        hexstr2bin("fe 22 f8 81 17 6e da 18 eb 8f 44 52 9e 67
+          92 c5 0c 9a 3f 89 45 2f 68 d8 ae 31 1b 43 09 d3 cf 50"),
+
+    ExporterInfo =
+        tls_v1:create_info(<<"exp master">>, CAPTHash, ssl_cipher:hash_size(HKDFAlgo)),
+
+    ExporterMasterSecret =
+        tls_v1:exporter_master_secret(HKDFAlgo, {master_secret, MasterSecret}, CHSF),
+
+    %% {server}  derive write traffic keys for application data:
+    %%
+    %%    PRK (32 octets):  a1 1a f9 f0 55 31 f8 56 ad 47 11 6b 45 a9 50 32
+    %%       82 04 b4 f4 4b fb 6b 3a 4b 4f 1f 3f cb 63 16 43
+    %%
+    %%    key info (13 octets):  00 10 09 74 6c 73 31 33 20 6b 65 79 00
+    %%
+    %%    key expanded (16 octets):  9f 02 28 3b 6c 9c 07 ef c2 6b b9 f2 ac
+    %%       92 e3 56
+    %%
+    %%    iv info (12 octets):  00 0c 08 74 6c 73 31 33 20 69 76 00
+    %%
+    %%    iv expanded (12 octets):  cf 78 2b 88 dd 83 54 9a ad f1 e9 84
+
+    %% PRK = SAPTrafficsecret
+    %% key info = WriteKeyInfo
+    %% iv info = WrtieIVInfo
+    SWKey =
+        hexstr2bin("9f 02 28 3b 6c 9c 07 ef c2 6b b9 f2 ac 92 e3 56"),
+
+    SWIV =
+        hexstr2bin("cf 78 2b 88 dd 83 54 9a ad f1 e9 84"),
+
+    {SWKey, SWIV} = tls_v1:calculate_traffic_keys(HKDFAlgo, Cipher, SAPTrafficSecret),
+
+    %% {server}  derive read traffic keys for handshake data:
+    %%
+    %%    PRK (32 octets):  b3 ed db 12 6e 06 7f 35 a7 80 b3 ab f4 5e 2d 8f
+    %%       3b 1a 95 07 38 f5 2e 96 00 74 6a 0e 27 a5 5a 21
+    %%
+    %%    key info (13 octets):  00 10 09 74 6c 73 31 33 20 6b 65 79 00
+    %%
+    %%    key expanded (16 octets):  db fa a6 93 d1 76 2c 5b 66 6a f5 d9 50
+    %%       25 8d 01
+    %%
+    %%    iv info (12 octets):  00 0c 08 74 6c 73 31 33 20 69 76 00
+    %%
+    %%    iv expanded (12 octets):  5b d3 c7 1b 83 6e 0b 76 bb 73 26 5f
+
+    %% PRK = CHSTrafficsecret
+    %% key info = WriteKeyInfo
+    %% iv info = WrtieIVInfo
+    SRKey =
+        hexstr2bin("db fa a6 93 d1 76 2c 5b 66 6a f5 d9 50 25 8d 01"),
+
+    SRIV =
+        hexstr2bin("5b d3 c7 1b 83 6e 0b 76 bb 73 26 5f"),
+
+    {SRKey, SRIV} = tls_v1:calculate_traffic_keys(HKDFAlgo, Cipher, CHSTrafficSecret).
+
+
+tls13_finished_verify_data() ->
+     [{doc,"Test TLS 1.3 Finished message handling"}].
+
+tls13_finished_verify_data(_Config) ->
+    ClientHello =
+        hexstr2bin("01 00 00 c6 03 03 00 01  02 03 04 05 06 07 08 09
+                    0a 0b 0c 0d 0e 0f 10 11  12 13 14 15 16 17 18 19
+                    1a 1b 1c 1d 1e 1f 20 e0  e1 e2 e3 e4 e5 e6 e7 e8
+                    e9 ea eb ec ed ee ef f0  f1 f2 f3 f4 f5 f6 f7 f8
+                    f9 fa fb fc fd fe ff 00  06 13 01 13 02 13 03 01
+                    00 00 77 00 00 00 18 00  16 00 00 13 65 78 61 6d
+                    70 6c 65 2e 75 6c 66 68  65 69 6d 2e 6e 65 74 00
+                    0a 00 08 00 06 00 1d 00  17 00 18 00 0d 00 14 00
+                    12 04 03 08 04 04 01 05  03 08 05 05 01 08 06 06
+                    01 02 01 00 33 00 26 00  24 00 1d 00 20 35 80 72
+                    d6 36 58 80 d1 ae ea 32  9a df 91 21 38 38 51 ed
+                    21 a2 8e 3b 75 e9 65 d0  d2 cd 16 62 54 00 2d 00
+                    02 01 01 00 2b 00 03 02  03 04"),
+
+    ServerHello =
+        hexstr2bin("02 00 00 76 03 03 70 71  72 73 74 75 76 77 78 79
+                    7a 7b 7c 7d 7e 7f 80 81  82 83 84 85 86 87 88 89
+                    8a 8b 8c 8d 8e 8f 20 e0  e1 e2 e3 e4 e5 e6 e7 e8
+                    e9 ea eb ec ed ee ef f0  f1 f2 f3 f4 f5 f6 f7 f8
+                    f9 fa fb fc fd fe ff 13  01 00 00 2e 00 33 00 24
+                    00 1d 00 20 9f d7 ad 6d  cf f4 29 8d d3 f9 6d 5b
+                    1b 2a f9 10 a0 53 5b 14  88 d7 f8 fa bb 34 9a 98
+                    28 80 b6 15 00 2b 00 02  03 04"),
+
+    EncryptedExtensions =
+        hexstr2bin("08 00 00 02 00 00"),
+
+    Certificate =
+        hexstr2bin("0b 00 03 2e 00 00 03 2a  00 03 25 30 82 03 21 30
+                    82 02 09 a0 03 02 01 02  02 08 15 5a 92 ad c2 04
+                    8f 90 30 0d 06 09 2a 86  48 86 f7 0d 01 01 0b 05
+                    00 30 22 31 0b 30 09 06  03 55 04 06 13 02 55 53
+                    31 13 30 11 06 03 55 04  0a 13 0a 45 78 61 6d 70
+                    6c 65 20 43 41 30 1e 17  0d 31 38 31 30 30 35 30
+                    31 33 38 31 37 5a 17 0d  31 39 31 30 30 35 30 31
+                    33 38 31 37 5a 30 2b 31  0b 30 09 06 03 55 04 06
+                    13 02 55 53 31 1c 30 1a  06 03 55 04 03 13 13 65
+                    78 61 6d 70 6c 65 2e 75  6c 66 68 65 69 6d 2e 6e
+                    65 74 30 82 01 22 30 0d  06 09 2a 86 48 86 f7 0d
+                    01 01 01 05 00 03 82 01  0f 00 30 82 01 0a 02 82
+                    01 01 00 c4 80 36 06 ba  e7 47 6b 08 94 04 ec a7
+                    b6 91 04 3f f7 92 bc 19  ee fb 7d 74 d7 a8 0d 00
+                    1e 7b 4b 3a 4a e6 0f e8  c0 71 fc 73 e7 02 4c 0d
+                    bc f4 bd d1 1d 39 6b ba  70 46 4a 13 e9 4a f8 3d
+                    f3 e1 09 59 54 7b c9 55  fb 41 2d a3 76 52 11 e1
+                    f3 dc 77 6c aa 53 37 6e  ca 3a ec be c3 aa b7 3b
+                    31 d5 6c b6 52 9c 80 98  bc c9 e0 28 18 e2 0b f7
+                    f8 a0 3a fd 17 04 50 9e  ce 79 bd 9f 39 f1 ea 69
+                    ec 47 97 2e 83 0f b5 ca  95 de 95 a1 e6 04 22 d5
+                    ee be 52 79 54 a1 e7 bf  8a 86 f6 46 6d 0d 9f 16
+                    95 1a 4c f7 a0 46 92 59  5c 13 52 f2 54 9e 5a fb
+                    4e bf d7 7a 37 95 01 44  e4 c0 26 87 4c 65 3e 40
+                    7d 7d 23 07 44 01 f4 84  ff d0 8f 7a 1f a0 52 10
+                    d1 f4 f0 d5 ce 79 70 29  32 e2 ca be 70 1f df ad
+                    6b 4b b7 11 01 f4 4b ad  66 6a 11 13 0f e2 ee 82
+                    9e 4d 02 9d c9 1c dd 67  16 db b9 06 18 86 ed c1
+                    ba 94 21 02 03 01 00 01  a3 52 30 50 30 0e 06 03
+                    55 1d 0f 01 01 ff 04 04  03 02 05 a0 30 1d 06 03
+                    55 1d 25 04 16 30 14 06  08 2b 06 01 05 05 07 03
+                    02 06 08 2b 06 01 05 05  07 03 01 30 1f 06 03 55
+                    1d 23 04 18 30 16 80 14  89 4f de 5b cc 69 e2 52
+                    cf 3e a3 00 df b1 97 b8  1d e1 c1 46 30 0d 06 09
+                    2a 86 48 86 f7 0d 01 01  0b 05 00 03 82 01 01 00
+                    59 16 45 a6 9a 2e 37 79  e4 f6 dd 27 1a ba 1c 0b
+                    fd 6c d7 55 99 b5 e7 c3  6e 53 3e ff 36 59 08 43
+                    24 c9 e7 a5 04 07 9d 39  e0 d4 29 87 ff e3 eb dd
+                    09 c1 cf 1d 91 44 55 87  0b 57 1d d1 9b df 1d 24
+                    f8 bb 9a 11 fe 80 fd 59  2b a0 39 8c de 11 e2 65
+                    1e 61 8c e5 98 fa 96 e5  37 2e ef 3d 24 8a fd e1
+                    74 63 eb bf ab b8 e4 d1  ab 50 2a 54 ec 00 64 e9
+                    2f 78 19 66 0d 3f 27 cf  20 9e 66 7f ce 5a e2 e4
+                    ac 99 c7 c9 38 18 f8 b2  51 07 22 df ed 97 f3 2e
+                    3e 93 49 d4 c6 6c 9e a6  39 6d 74 44 62 a0 6b 42
+                    c6 d5 ba 68 8e ac 3a 01  7b dd fc 8e 2c fc ad 27
+                    cb 69 d3 cc dc a2 80 41  44 65 d3 ae 34 8c e0 f3
+                    4a b2 fb 9c 61 83 71 31  2b 19 10 41 64 1c 23 7f
+                    11 a5 d6 5c 84 4f 04 04  84 99 38 71 2b 95 9e d6
+                    85 bc 5c 5d d6 45 ed 19  90 94 73 40 29 26 dc b4
+                    0e 34 69 a1 59 41 e8 e2  cc a8 4b b6 08 46 36 a0
+                    00 00"),
+
+    CertificateVerify =
+        hexstr2bin("0f 00 01 04 08 04 01 00  17 fe b5 33 ca 6d 00 7d
+                    00 58 25 79 68 42 4b bc  3a a6 90 9e 9d 49 55 75
+                    76 a5 20 e0 4a 5e f0 5f  0e 86 d2 4f f4 3f 8e b8
+                    61 ee f5 95 22 8d 70 32  aa 36 0f 71 4e 66 74 13
+                    92 6e f4 f8 b5 80 3b 69  e3 55 19 e3 b2 3f 43 73
+                    df ac 67 87 06 6d cb 47  56 b5 45 60 e0 88 6e 9b
+                    96 2c 4a d2 8d ab 26 ba  d1 ab c2 59 16 b0 9a f2
+                    86 53 7f 68 4f 80 8a ef  ee 73 04 6c b7 df 0a 84
+                    fb b5 96 7a ca 13 1f 4b  1c f3 89 79 94 03 a3 0c
+                    02 d2 9c bd ad b7 25 12  db 9c ec 2e 5e 1d 00 e5
+                    0c af cf 6f 21 09 1e bc  4f 25 3c 5e ab 01 a6 79
+                    ba ea be ed b9 c9 61 8f  66 00 6b 82 44 d6 62 2a
+                    aa 56 88 7c cf c6 6a 0f  38 51 df a1 3a 78 cf f7
+                    99 1e 03 cb 2c 3a 0e d8  7d 73 67 36 2e b7 80 5b
+                    00 b2 52 4f f2 98 a4 da  48 7c ac de af 8a 23 36
+                    c5 63 1b 3e fa 93 5b b4  11 e7 53 ca 13 b0 15 fe
+                    c7 e4 a7 30 f1 36 9f 9e"),
+
+    BaseKey =
+        hexstr2bin("a2 06 72 65 e7 f0 65 2a  92 3d 5d 72 ab 04 67 c4
+                    61 32 ee b9 68 b6 a3 2d  31 1c 80 58 68 54 88 14"),
+
+    VerifyData =
+        hexstr2bin("ea 6e e1 76 dc cc 4a f1  85 9e 9e 4e 93 f7 97 ea
+                    c9 a7 8c e4 39 30 1e 35  27 5a d4 3f 3c dd bd e3"),
+
+    Messages = [CertificateVerify,
+                Certificate,
+                EncryptedExtensions,
+                ServerHello,
+                ClientHello],
+
+    FinishedKey = tls_v1:finished_key(BaseKey, sha256),
+    VerifyData = tls_v1:finished_verify_data(FinishedKey, sha256, Messages).
+
+tls13_basic_ssl_server_openssl_client() ->
+     [{doc,"Test TLS 1.3 basic connection between ssl server and openssl s_client"}].
+
+tls13_basic_ssl_server_openssl_client(Config) ->
+    ClientOpts = ssl_test_lib:ssl_options(client_rsa_opts, Config),
+    ServerOpts0 = ssl_test_lib:ssl_options(server_rsa_opts, Config),
+    %% Set versions
+    ServerOpts = [{versions, ['tlsv1.2','tlsv1.3']}|ServerOpts0],
+    {_ClientNode, ServerNode, _Hostname} = ssl_test_lib:run_where(Config),
+
+    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0},
+					{from, self()},
+					{mfa, {ssl_test_lib, send_recv_result_active, []}},
+					{options, ServerOpts}]),
+    Port = ssl_test_lib:inet_port(Server),
+
+    Client = ssl_test_lib:start_basic_client(openssl, 'tlsv1.3', Port, ClientOpts),
+
+    ssl_test_lib:check_result(Server, ok),
+    ssl_test_lib:close(Server),
+    ssl_test_lib:close_port(Client).
+
+tls13_custom_groups_ssl_server_openssl_client() ->
+    [{doc,"Test that ssl server can select a common group for key-exchange"}].
+
+tls13_custom_groups_ssl_server_openssl_client(Config) ->
+    ClientOpts0 = ssl_test_lib:ssl_options(client_rsa_opts, Config),
+    ServerOpts0 = ssl_test_lib:ssl_options(server_rsa_opts, Config),
+    %% Set versions
+    ServerOpts = [{versions, ['tlsv1.2','tlsv1.3']},
+                  {supported_groups, [x448, secp256r1, secp384r1]}|ServerOpts0],
+    {_ClientNode, ServerNode, _Hostname} = ssl_test_lib:run_where(Config),
+
+    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0},
+					{from, self()},
+					{mfa, {ssl_test_lib, send_recv_result_active, []}},
+					{options, ServerOpts}]),
+    Port = ssl_test_lib:inet_port(Server),
+
+    ClientOpts = [{groups,"P-384:P-256:X25519"}|ClientOpts0],
+    Client = ssl_test_lib:start_basic_client(openssl, 'tlsv1.3', Port, ClientOpts),
+
+    ssl_test_lib:check_result(Server, ok),
+    ssl_test_lib:close(Server),
+    ssl_test_lib:close_port(Client).
+
+tls13_hello_retry_request_ssl_server_openssl_client() ->
+    [{doc,"Test that ssl server can request a new group when the client's first key share"
+      "is not supported"}].
+
+tls13_hello_retry_request_ssl_server_openssl_client(Config) ->
+    ClientOpts0 = ssl_test_lib:ssl_options(client_rsa_opts, Config),
+    ServerOpts0 = ssl_test_lib:ssl_options(server_rsa_opts, Config),
+    %% Set versions
+    ServerOpts = [{versions, ['tlsv1.2','tlsv1.3']},
+                  {supported_groups, [x448, x25519]}|ServerOpts0],
+    {_ClientNode, ServerNode, _Hostname} = ssl_test_lib:run_where(Config),
+
+    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0},
+					{from, self()},
+					{mfa, {ssl_test_lib, send_recv_result_active, []}},
+					{options, ServerOpts}]),
+    Port = ssl_test_lib:inet_port(Server),
+
+    ClientOpts = [{groups,"P-256:X25519"}|ClientOpts0],
+    Client = ssl_test_lib:start_basic_client(openssl, 'tlsv1.3', Port, ClientOpts),
+
+    ssl_test_lib:check_result(Server, ok),
+    ssl_test_lib:close(Server),
+    ssl_test_lib:close_port(Client).
+
+tls13_client_auth_empty_cert_alert_ssl_server_openssl_client() ->
+     [{doc,"TLS 1.3: Test client authentication when client sends an empty certificate and fail_if_no_peer_cert is set to true."}].
+
+tls13_client_auth_empty_cert_alert_ssl_server_openssl_client(Config) ->
+    ClientOpts0 = ssl_test_lib:ssl_options(client_rsa_opts, Config),
+    %% Delete Client Cert and Key
+    ClientOpts1 = proplists:delete(certfile, ClientOpts0),
+    ClientOpts = proplists:delete(keyfile, ClientOpts1),
+
+    ServerOpts0 = ssl_test_lib:ssl_options(server_rsa_opts, Config),
+    %% Set versions
+    ServerOpts = [{versions, ['tlsv1.2','tlsv1.3']},
+                  {verify, verify_peer},
+                  {fail_if_no_peer_cert, true}|ServerOpts0],
+    {_ClientNode, ServerNode, _Hostname} = ssl_test_lib:run_where(Config),
+
+    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0},
+					{from, self()},
+					{mfa, {ssl_test_lib, send_recv_result_active, []}},
+					{options, ServerOpts}]),
+    Port = ssl_test_lib:inet_port(Server),
+
+    Client = ssl_test_lib:start_basic_client(openssl, 'tlsv1.3', Port, ClientOpts),
+
+    ssl_test_lib:check_result(Server,
+                              {error,
+                               {tls_alert,
+                                {certificate_required,
+                                 "received SERVER ALERT: Fatal - Certificate required - certificate_required"}}}),
+    ssl_test_lib:close(Server),
+    ssl_test_lib:close_port(Client).
+
+tls13_client_auth_empty_cert_ssl_server_openssl_client() ->
+     [{doc,"TLS 1.3: Test client authentication when client sends an empty certificate and fail_if_no_peer_cert is set to false."}].
+
+tls13_client_auth_empty_cert_ssl_server_openssl_client(Config) ->
+    ClientOpts0 = ssl_test_lib:ssl_options(client_rsa_opts, Config),
+    %% Delete Client Cert and Key
+    ClientOpts1 = proplists:delete(certfile, ClientOpts0),
+    ClientOpts = proplists:delete(keyfile, ClientOpts1),
+
+    ServerOpts0 = ssl_test_lib:ssl_options(server_rsa_opts, Config),
+    %% Set versions
+    ServerOpts = [{versions, ['tlsv1.2','tlsv1.3']},
+                  {verify, verify_peer},
+                  {fail_if_no_peer_cert, false}|ServerOpts0],
+    {_ClientNode, ServerNode, _Hostname} = ssl_test_lib:run_where(Config),
+
+    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0},
+					{from, self()},
+					{mfa, {ssl_test_lib, send_recv_result_active, []}},
+					{options, ServerOpts}]),
+    Port = ssl_test_lib:inet_port(Server),
+
+    Client = ssl_test_lib:start_basic_client(openssl, 'tlsv1.3', Port, ClientOpts),
+
+    ssl_test_lib:check_result(Server, ok),
+    ssl_test_lib:close(Server),
+    ssl_test_lib:close_port(Client).
+
+
+tls13_client_auth_ssl_server_openssl_client() ->
+     [{doc,"TLS 1.3: Test client authentication."}].
+
+tls13_client_auth_ssl_server_openssl_client(Config) ->
+    ClientOpts = ssl_test_lib:ssl_options(client_rsa_opts, Config),
+
+    ServerOpts0 = ssl_test_lib:ssl_options(server_rsa_opts, Config),
+    %% Set versions
+    ServerOpts = [{versions, ['tlsv1.2','tlsv1.3']},
+                  {verify, verify_peer},
+                  {fail_if_no_peer_cert, true}|ServerOpts0],
+    {_ClientNode, ServerNode, _Hostname} = ssl_test_lib:run_where(Config),
+
+    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0},
+					{from, self()},
+					{mfa, {ssl_test_lib, send_recv_result_active, []}},
+					{options, ServerOpts}]),
+    Port = ssl_test_lib:inet_port(Server),
+
+    Client = ssl_test_lib:start_basic_client(openssl, 'tlsv1.3', Port, ClientOpts),
+
+    ssl_test_lib:check_result(Server, ok),
+    ssl_test_lib:close(Server),
+    ssl_test_lib:close_port(Client).
+
+
+tls13_hrr_client_auth_empty_cert_alert_ssl_server_openssl_client() ->
+     [{doc,"TLS 1.3 (HelloRetryRequest): Test client authentication when client sends an empty certificate and fail_if_no_peer_cert is set to true."}].
+
+tls13_hrr_client_auth_empty_cert_alert_ssl_server_openssl_client(Config) ->
+    ClientOpts0 = ssl_test_lib:ssl_options(client_rsa_opts, Config),
+    %% Delete Client Cert and Key
+    ClientOpts1 = proplists:delete(certfile, ClientOpts0),
+    ClientOpts2 = proplists:delete(keyfile, ClientOpts1),
+    ClientOpts = [{groups,"P-256:X25519"}|ClientOpts2],
+
+    ServerOpts0 = ssl_test_lib:ssl_options(server_rsa_opts, Config),
+    %% Set versions
+    ServerOpts = [{versions, ['tlsv1.2','tlsv1.3']},
+                  {verify, verify_peer},
+                  {fail_if_no_peer_cert, true},
+                  {supported_groups, [x448, x25519]}|ServerOpts0],
+    {_ClientNode, ServerNode, _Hostname} = ssl_test_lib:run_where(Config),
+
+    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0},
+					{from, self()},
+					{mfa, {ssl_test_lib, send_recv_result_active, []}},
+					{options, ServerOpts}]),
+    Port = ssl_test_lib:inet_port(Server),
+
+    Client = ssl_test_lib:start_basic_client(openssl, 'tlsv1.3', Port, ClientOpts),
+
+    ssl_test_lib:check_result(Server,
+                              {error,
+                               {tls_alert,
+                                {certificate_required,
+                                 "received SERVER ALERT: Fatal - Certificate required - certificate_required"}}}),
+    ssl_test_lib:close(Server),
+    ssl_test_lib:close_port(Client).
+
+
+tls13_hrr_client_auth_empty_cert_ssl_server_openssl_client() ->
+     [{doc,"TLS 1.3 (HelloRetryRequest): Test client authentication when client sends an empty certificate and fail_if_no_peer_cert is set to false."}].
+
+tls13_hrr_client_auth_empty_cert_ssl_server_openssl_client(Config) ->
+    ClientOpts0 = ssl_test_lib:ssl_options(client_rsa_opts, Config),
+    %% Delete Client Cert and Key
+    ClientOpts1 = proplists:delete(certfile, ClientOpts0),
+    ClientOpts2 = proplists:delete(keyfile, ClientOpts1),
+    ClientOpts = [{groups,"P-256:X25519"}|ClientOpts2],
+
+    ServerOpts0 = ssl_test_lib:ssl_options(server_rsa_opts, Config),
+    %% Set versions
+    ServerOpts = [{versions, ['tlsv1.2','tlsv1.3']},
+                  {verify, verify_peer},
+                  {fail_if_no_peer_cert, false},
+                  {supported_groups, [x448, x25519]}|ServerOpts0],
+    {_ClientNode, ServerNode, _Hostname} = ssl_test_lib:run_where(Config),
+
+    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0},
+					{from, self()},
+					{mfa, {ssl_test_lib, send_recv_result_active, []}},
+					{options, ServerOpts}]),
+    Port = ssl_test_lib:inet_port(Server),
+
+    Client = ssl_test_lib:start_basic_client(openssl, 'tlsv1.3', Port, ClientOpts),
+
+    ssl_test_lib:check_result(Server, ok),
+    ssl_test_lib:close(Server),
+    ssl_test_lib:close_port(Client).
+
+
+tls13_hrr_client_auth_ssl_server_openssl_client() ->
+     [{doc,"TLS 1.3 (HelloRetryRequest): Test client authentication."}].
+
+tls13_hrr_client_auth_ssl_server_openssl_client(Config) ->
+    ClientOpts0 = ssl_test_lib:ssl_options(client_rsa_opts, Config),
+    ClientOpts = [{groups,"P-256:X25519"}|ClientOpts0],
+
+    ServerOpts0 = ssl_test_lib:ssl_options(server_rsa_opts, Config),
+    %% Set versions
+    ServerOpts = [{versions, ['tlsv1.2','tlsv1.3']},
+                  {verify, verify_peer},
+                  {fail_if_no_peer_cert, true},
+                  {supported_groups, [x448, x25519]}|ServerOpts0],
+    {_ClientNode, ServerNode, _Hostname} = ssl_test_lib:run_where(Config),
+
+    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0},
+					{from, self()},
+					{mfa, {ssl_test_lib, send_recv_result_active, []}},
+					{options, ServerOpts}]),
+    Port = ssl_test_lib:inet_port(Server),
+
+    Client = ssl_test_lib:start_basic_client(openssl, 'tlsv1.3', Port, ClientOpts),
+
+    ssl_test_lib:check_result(Server, ok),
+    ssl_test_lib:close(Server),
+    ssl_test_lib:close_port(Client).
+
+
+tls13_unsupported_sign_algo_client_auth_ssl_server_openssl_client() ->
+     [{doc,"TLS 1.3: Test client authentication with unsupported signature_algorithm"}].
+
+tls13_unsupported_sign_algo_client_auth_ssl_server_openssl_client(Config) ->
+    ClientOpts = ssl_test_lib:ssl_options(client_rsa_opts, Config),
+
+    ServerOpts0 = ssl_test_lib:ssl_options(server_rsa_opts, Config),
+    %% Set versions
+    ServerOpts = [{versions, ['tlsv1.2','tlsv1.3']},
+                  {verify, verify_peer},
+                  %% Skip rsa_pkcs1_sha256!
+                  {signature_algs, [rsa_pkcs1_sha384, rsa_pkcs1_sha512]},
+                  {fail_if_no_peer_cert, true}|ServerOpts0],
+    {_ClientNode, ServerNode, _Hostname} = ssl_test_lib:run_where(Config),
+
+    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0},
+					{from, self()},
+					{mfa, {ssl_test_lib, send_recv_result_active, []}},
+					{options, ServerOpts}]),
+    Port = ssl_test_lib:inet_port(Server),
+
+    Client = ssl_test_lib:start_basic_client(openssl, 'tlsv1.3', Port, ClientOpts),
+
+    ssl_test_lib:check_result(
+      Server,
+      {error,
+       {tls_alert,
+        {insufficient_security,
+         "received SERVER ALERT: Fatal - Insufficient Security - "
+         "\"No suitable signature algorithm\""}}}),
+    ssl_test_lib:close(Server),
+    ssl_test_lib:close_port(Client).
+
+
+%% Triggers Client Alert as openssl s_client does not have a certificate with a
+%% signature algorithm supported by the server (signature_algorithms_cert extension
+%% of CertificateRequest does not contain the algorithm of the client certificate).
+tls13_unsupported_sign_algo_cert_client_auth_ssl_server_openssl_client() ->
+     [{doc,"TLS 1.3: Test client authentication with unsupported signature_algorithm_cert"}].
+
+tls13_unsupported_sign_algo_cert_client_auth_ssl_server_openssl_client(Config) ->
+    ClientOpts = ssl_test_lib:ssl_options(client_rsa_opts, Config),
+
+    ServerOpts0 = ssl_test_lib:ssl_options(server_rsa_opts, Config),
+    %% Set versions
+    ServerOpts = [{versions, ['tlsv1.2','tlsv1.3']},
+                  {log_level, debug},
+                  {verify, verify_peer},
+                  {signature_algs, [rsa_pkcs1_sha256, rsa_pkcs1_sha384, rsa_pss_rsae_sha256]},
+                  %% Skip rsa_pkcs1_sha256!
+                  {signature_algs_cert, [rsa_pkcs1_sha384, rsa_pkcs1_sha512]},
+                  {fail_if_no_peer_cert, true}|ServerOpts0],
+    {_ClientNode, ServerNode, _Hostname} = ssl_test_lib:run_where(Config),
+
+    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0},
+					{from, self()},
+					{mfa, {ssl_test_lib, send_recv_result_active, []}},
+					{options, ServerOpts}]),
+    Port = ssl_test_lib:inet_port(Server),
+
+    Client = ssl_test_lib:start_basic_client(openssl, 'tlsv1.3', Port, ClientOpts),
+
+    ssl_test_lib:check_result(
+      Server,
+      {error,
+       {tls_alert,
+        {illegal_parameter,
+         "received CLIENT ALERT: Fatal - Illegal Parameter"}}}),
+    ssl_test_lib:close(Server),
+    ssl_test_lib:close_port(Client).
+
+
+tls13_connection_information() ->
+     [{doc,"Test the API function ssl:connection_information/1 in a TLS 1.3 connection"}].
+
+tls13_connection_information(Config) ->
+    ClientOpts = ssl_test_lib:ssl_options(client_rsa_opts, Config),
+    ServerOpts0 = ssl_test_lib:ssl_options(server_rsa_opts, Config),
+    %% Set versions
+    ServerOpts = [{versions, ['tlsv1.2','tlsv1.3']}|ServerOpts0],
+    {_ClientNode, ServerNode, _Hostname} = ssl_test_lib:run_where(Config),
+
+    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0},
+					{from, self()},
+					{mfa, {?MODULE, connection_information_result, []}},
+					{options, ServerOpts}]),
+    Port = ssl_test_lib:inet_port(Server),
+
+    Client = ssl_test_lib:start_basic_client(openssl, 'tlsv1.3', Port, ClientOpts),
+
+    ssl_test_lib:check_result(Server, ok),
+    ssl_test_lib:close(Server),
+    ssl_test_lib:close_port(Client).
+
 
 %%--------------------------------------------------------------------
 %% Internal functions ------------------------------------------------
@@ -4490,8 +5668,8 @@ tcp_send_recv_result(Socket) ->
     ok.
 
 basic_verify_test_no_close(Config) ->
-    ClientOpts = ssl_test_lib:ssl_options(client_verification_opts, Config),
-    ServerOpts = ssl_test_lib:ssl_options(server_verification_opts, Config),
+    ClientOpts = ssl_test_lib:ssl_options(client_rsa_verify_opts, Config),
+    ServerOpts = ssl_test_lib:ssl_options(server_rsa_verify_opts, Config),
 
     {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
 
@@ -4634,19 +5812,24 @@ recv_close(Socket) ->
 
 send_recv_result_active_rizzo(Socket) ->
     ssl:send(Socket, "Hello world"),
-    receive 
-	{ssl, Socket, "H"} ->
-	    receive 
-		{ssl, Socket, "ello world"} ->
-		    ok
-	    end
-    end.
+    "Hello world" = ssl_test_lib:active_recv(Socket, 11),
+    ok.
 
 send_recv_result_active_no_rizzo(Socket) ->
     ssl:send(Socket, "Hello world"),
+    "Hello world" = ssl_test_lib:active_recv(Socket, 11),
+    ok.
+
+
+ssl_active_recv(N) ->
+    ssl_active_recv(N, []).
+
+ssl_active_recv(0, Acc) ->
+    Acc;
+ssl_active_recv(N, Acc) ->
     receive 
-	{ssl, Socket, "Hello world"} ->
-	    ok
+	{ssl, _, Bytes} ->
+            ssl_active_recv(N-length(Bytes),  Acc ++ Bytes)
     end.
 
 result_ok(_Socket) ->
@@ -4670,16 +5853,7 @@ renegotiate_reuse_session(Socket, Data) ->
     renegotiate(Socket, Data).
 
 renegotiate_immediately(Socket) ->
-    receive
-	{ssl, Socket, "Hello world"} ->
-	    ok;
-	%% Handle 1/n-1 splitting countermeasure Rizzo/Duong-Beast
-	{ssl, Socket, "H"} ->
-	    receive
-		{ssl, Socket, "ello world"} ->
-		    ok
-	    end
-    end,
+    _ = ssl_test_lib:active_recv(Socket, 11),
     ok = ssl:renegotiate(Socket),  
     {error, renegotiation_rejected} = ssl:renegotiate(Socket),
     ct:sleep(?RENEGOTIATION_DISABLE_TIME + ?SLEEP),
@@ -4689,17 +5863,7 @@ renegotiate_immediately(Socket) ->
     ok.
 
 renegotiate_rejected(Socket) ->
-    receive
-	{ssl, Socket, "Hello world"} ->
-	    ok;
-	%% Handle 1/n-1 splitting countermeasure Rizzo/Duong-Beast
-	{ssl, Socket, "H"} ->
-
-	    receive
-		{ssl, Socket, "ello world"} ->
-		    ok
-	    end
-    end,
+    _ = ssl_test_lib:active_recv(Socket, 11),
     {error, renegotiation_rejected} = ssl:renegotiate(Socket),
     {error, renegotiation_rejected} = ssl:renegotiate(Socket),
     ct:sleep(?RENEGOTIATION_DISABLE_TIME +1),
@@ -4874,17 +6038,11 @@ session_loop(Sess) ->
 	    
 
 erlang_ssl_receive(Socket, Data) ->
-    receive
-	{ssl, Socket, Data} ->
-	    io:format("Received ~p~n",[Data]),
-	    ok;
-	{ssl, Socket, Byte} when length(Byte) == 1 ->  %% Handle 1/n-1 splitting countermeasure Rizzo/Duong-Beast
-	    io:format("Received ~p~n",[Byte]),
-	    erlang_ssl_receive(Socket, tl(Data));
-	Other ->
-	    ct:fail({unexpected_message, Other})
-    after timer:seconds(?SEC_RENEGOTIATION_TIMEOUT) * test_server:timetrap_scale_factor() ->
-	    ct:fail({did_not_get, Data})
+    case ssl_test_lib:active_recv(Socket, length(Data)) of
+        Data ->
+            ok;
+        Other ->
+            ct:fail({{expected, Data}, {got, Other}})
     end.
 
 receive_msg(_) ->
@@ -4901,28 +6059,6 @@ controlling_process_result(Socket, Pid, Msg) ->
     ssl:send(Socket, Msg),
     no_result_msg.
 
-receive_s_rizzo_duong_beast() ->
-    receive
-	{ssl, _, "erver hello"} ->
-	    receive
-		{ssl, _, "C"} ->
-		    receive
-			{ssl, _, "lient hello"} ->
-			    ok
-		    end
-	    end
-    end.
-receive_c_rizzo_duong_beast() ->
-    receive
-	{ssl, _, "lient hello"} ->
-	    receive
-		{ssl, _, "S"} ->
-		    receive
-			{ssl, _, "erver hello"} ->
-			    ok
-		    end
-	    end
-    end.
 
 controller_dies_result(_Socket, _Pid, _Msg) ->
     receive Result -> Result end.
@@ -5002,143 +6138,6 @@ client_server_opts(#{key_exchange := KeyAlgo}, Config) when KeyAlgo == ecdh_rsa
     {ssl_test_lib:ssl_options(client_opts, Config),
      ssl_test_lib:ssl_options(server_ecdh_rsa_opts, Config)}.
 
-run_suites(Ciphers, Config, Type) ->
-    Version = ssl_test_lib:protocol_version(Config),
-    ct:log("Running cipher suites ~p~n", [Ciphers]),
-    {ClientOpts, ServerOpts} =
-	case Type of
-	    rsa ->
-		{ssl_test_lib:ssl_options(client_verification_opts, Config),
-                 [{ciphers, Ciphers} |
-                  ssl_test_lib:ssl_options(server_verification_opts, Config)]};
-	    dsa ->
-		{ssl_test_lib:ssl_options(client_verification_opts, Config),
-                 [{ciphers, Ciphers} |
-		 ssl_test_lib:ssl_options(server_dsa_opts, Config)]};
-	    anonymous ->
-		%% No certs in opts!
-		{ssl_test_lib:ssl_options(client_verification_opts, Config),
-		 [{ciphers, Ciphers} |
-                  ssl_test_lib:ssl_options([], Config)]};
-	    psk ->
-		{ssl_test_lib:ssl_options(client_psk, Config),
-                 [{ciphers, Ciphers} | 
-                  ssl_test_lib:ssl_options(server_psk, Config)]};
-	    psk_with_hint ->
-		{ssl_test_lib:ssl_options(client_psk, Config),
-		 [{ciphers, Ciphers} |
-                  ssl_test_lib:ssl_options(server_psk_hint, Config)
-                 ]};
-	    psk_anon ->
-		{ssl_test_lib:ssl_options(client_psk, Config),
-                 [{ciphers, Ciphers} |
-                  ssl_test_lib:ssl_options(server_psk_anon, Config)]};
-	    psk_anon_with_hint ->
-		{ssl_test_lib:ssl_options(client_psk, Config),
-                 [{ciphers, Ciphers} |
-		 ssl_test_lib:ssl_options(server_psk_anon_hint, Config)]};
-	    srp ->
-		{ssl_test_lib:ssl_options(client_srp, Config),
-		 ssl_test_lib:ssl_options(server_srp, Config)};
-	    srp_anon ->
-		{ssl_test_lib:ssl_options(client_srp, Config),
-		 ssl_test_lib:ssl_options(server_srp_anon, Config)};
-	    srp_dsa ->
-		{ssl_test_lib:ssl_options(client_srp_dsa, Config),
-		 ssl_test_lib:ssl_options(server_srp_dsa, Config)};
-	    ecdsa ->
-		{ssl_test_lib:ssl_options(client_verification_opts, Config),
-                 [{ciphers, Ciphers} |
-                  ssl_test_lib:ssl_options(server_ecdsa_opts, Config)]};
-	    ecdh_rsa ->
-		{ssl_test_lib:ssl_options(client_verification_opts, Config),
-		 ssl_test_lib:ssl_options(server_ecdh_rsa_opts, Config)};
-	    rc4_rsa ->
-		{ssl_test_lib:ssl_options(client_verification_opts, Config),
-		 [{ciphers, Ciphers} |
-		  ssl_test_lib:ssl_options(server_verification_opts, Config)]};
-	    rc4_ecdh_rsa ->
-		{ssl_test_lib:ssl_options(client_verification_opts, Config),
-		 [{ciphers, Ciphers} |
-		  ssl_test_lib:ssl_options(server_ecdh_rsa_opts, Config)]};
-	    rc4_ecdsa ->
-		{ssl_test_lib:ssl_options(client_verification_opts, Config),
-		 [{ciphers, Ciphers} |
-		  ssl_test_lib:ssl_options(server_ecdsa_opts, Config)]};
-	    des_dhe_rsa ->
-		{ssl_test_lib:ssl_options(client_verification_opts, Config),
-		 [{ciphers, Ciphers} |
-		  ssl_test_lib:ssl_options(server_verification_opts, Config)]};
-	    des_rsa ->
-		{ssl_test_lib:ssl_options(client_verification_opts, Config),
-		 [{ciphers, Ciphers} |
-		  ssl_test_lib:ssl_options(server_verification_opts, Config)]};
-            chacha_rsa ->
-                {ssl_test_lib:ssl_options(client_verification_opts, Config),
-                 [{ciphers, Ciphers} |
-                  ssl_test_lib:ssl_options(server_verification_opts, Config)]};
-            chacha_ecdsa ->
-               	{ssl_test_lib:ssl_options(client_verification_opts, Config),
-                 [{ciphers, Ciphers} |
-                  ssl_test_lib:ssl_options(server_ecdsa_opts, Config)]} 
-	end,
-    Suites = ssl_test_lib:filter_suites(Ciphers, Version),
-    ct:pal("ssl_test_lib:filter_suites(~p ~p) -> ~p ", [Ciphers, Version, Suites]),
-    Results0 =  lists:map(fun(Cipher) ->
-                                 cipher(Cipher, Version, Config, ClientOpts, ServerOpts) end,
-                         ssl_test_lib:filter_suites(Ciphers, Version)),
-    Results = lists:flatten(Results0),
-    true = length(Results) == length(Suites),
-    check_cipher_result(Results).
-
-check_cipher_result([]) ->
-    ok;
-check_cipher_result([ok | Rest]) ->
-    check_cipher_result(Rest);
-check_cipher_result([_ |_] = Error) ->
-    ct:fail(Error).
-    
-erlang_cipher_suite(Suite) when is_list(Suite)->
-    ssl_cipher_format:suite_definition(ssl_cipher_format:openssl_suite(Suite));
-erlang_cipher_suite(Suite) ->
-    Suite.
-
-cipher(CipherSuite, Version, Config, ClientOpts, ServerOpts) ->
-    %% process_flag(trap_exit, true),
-    ct:log("Testing CipherSuite ~p~n", [CipherSuite]),
-    ct:log("Server Opts ~p~n", [ServerOpts]),
-    ct:log("Client Opts ~p~n", [ClientOpts]),
-    {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
-
-    ErlangCipherSuite = erlang_cipher_suite(CipherSuite),
-
-    ConnectionInfo = {ok, {Version, ErlangCipherSuite}},
-
-    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0},
-					{from, self()},
-			   {mfa, {ssl_test_lib, cipher_result, [ConnectionInfo]}},
-			   {options, ServerOpts}]),
-    Port = ssl_test_lib:inet_port(Server),
-    Client = ssl_test_lib:start_client([{node, ClientNode}, {port, Port},
-					{host, Hostname},
-					{from, self()},
-					{mfa, {ssl_test_lib, cipher_result, [ConnectionInfo]}},
-					{options,
-					 [{ciphers,[CipherSuite]} |
-					  ClientOpts]}]),
-
-    Result = ssl_test_lib:wait_for_result(Server, ok, Client, ok),
-
-    ssl_test_lib:close(Server),
-    ssl_test_lib:close(Client),
-
-    case Result of
-	ok ->
-	    [ok];
-	Error ->
-	    [{ErlangCipherSuite, Error}]
-    end.
-
 connection_information_result(Socket) ->
     {ok, Info = [_ | _]} = ssl:connection_information(Socket),
     case  length(Info) > 3 of
@@ -5176,23 +6175,28 @@ connect_dist_c(S) ->
     {ok, Test} = ssl:recv(S, 0, 10000),
     ok.
 
-tls_downgrade_result(Socket) ->
+tls_downgrade_result(Socket, Pid) ->
     ok = ssl_test_lib:send_recv_result(Socket),
+    Pid ! {self(), ready},
+    receive 
+        go ->
+            ok
+    end,
     case ssl:close(Socket, {self(), 10000})  of
 	{ok, TCPSocket} -> 
-	    inet:setopts(TCPSocket, [{active, true}]),
+            inet:setopts(TCPSocket, [{active, true}]),
 	    gen_tcp:send(TCPSocket, "Downgraded"),
-	    receive 
-		{tcp, TCPSocket, <<"Downgraded">>} ->
-		    ok;
-		{tcp_closed, TCPSocket} ->
-		    ct:pal("Peer timed out, downgrade aborted"),
-		    ok;
-		Other ->
-		   {error, Other}
-	    end;
+            receive 
+                {tcp, TCPSocket, <<"Downgraded">>} ->
+	             ok;
+                {tcp_closed, TCPSocket} ->
+                    ct:fail("Peer timed out, downgrade aborted"),
+	            ok;
+	        Other ->
+                    {error, Other}
+            end;
 	{error, timeout} ->
-	    ct:pal("Timed out, downgrade aborted"),
+	    ct:fail("Timed out, downgrade aborted"),
 	    ok;
 	Fail ->
 	    {error, Fail}
@@ -5297,3 +6301,31 @@ tls_or_dtls('dtlsv1.2') ->
     dtls;
 tls_or_dtls(_) ->
     tls.
+
+hexstr2int(S) ->
+    B = hexstr2bin(S),
+    Bits = size(B) * 8,
+    <<Integer:Bits/integer>> = B,
+    Integer.
+
+hexstr2bin(S) when is_binary(S) ->
+    hexstr2bin(S, <<>>);
+hexstr2bin(S) ->
+    hexstr2bin(list_to_binary(S), <<>>).
+%%
+hexstr2bin(<<>>, Acc) ->
+    Acc;
+hexstr2bin(<<C,T/binary>>, Acc) when C =:= 32;   %% SPACE
+                                     C =:= 10;   %% LF
+                                     C =:= 13 -> %% CR
+    hexstr2bin(T, Acc);
+hexstr2bin(<<X,Y,T/binary>>, Acc) ->
+    I = hex2int(X) * 16 + hex2int(Y),
+    hexstr2bin(T, <<Acc/binary,I>>).
+
+hex2int(C) when $0 =< C, C =< $9 ->
+    C - $0;
+hex2int(C) when $A =< C, C =< $F ->
+    C - $A + 10;
+hex2int(C) when $a =< C, C =< $f ->
+    C - $a + 10.
diff --git a/lib/ssl/test/ssl_bench.spec b/lib/ssl/test/ssl_bench.spec
index 8b746c5ca9..217cc6fc83 100644
--- a/lib/ssl/test/ssl_bench.spec
+++ b/lib/ssl/test/ssl_bench.spec
@@ -1 +1,2 @@
 {suites,"../ssl_test",[ssl_bench_SUITE, ssl_dist_bench_SUITE]}.
+{skip_groups,"../ssl_test",ssl_bench_SUITE,basic,"Benchmarks run separately"}.
diff --git a/lib/ssl/test/ssl_bench_SUITE.erl b/lib/ssl/test/ssl_bench_SUITE.erl
index 13097b08b6..35efa2b8a3 100644
--- a/lib/ssl/test/ssl_bench_SUITE.erl
+++ b/lib/ssl/test/ssl_bench_SUITE.erl
@@ -25,10 +25,11 @@
 
 suite() -> [{ct_hooks,[{ts_install_cth,[{nodenames,2}]}]}].
 
-all() -> [{group, setup}, {group, payload}, {group, pem_cache}].
+all() -> [{group, basic}, {group, setup}, {group, payload}, {group, pem_cache}].
 
 groups() ->
-    [{setup, [{repeat, 3}], [setup_sequential, setup_concurrent]},
+    [{basic, [], [basic_pem_cache]},
+     {setup, [{repeat, 3}], [setup_sequential, setup_concurrent]},
      {payload, [{repeat, 3}], [payload_simple]},
      {pem_cache, [{repeat, 3}], [use_pem_cache, bypass_pem_cache]}
     ].
@@ -40,6 +41,7 @@ end_per_group(_GroupName, _Config) ->
     ok.
 
 init_per_suite(Config) ->
+    ct:timetrap({minutes, 1}),
     case node() of
         nonode@nohost ->
             {skipped, "Node not distributed"};
@@ -51,29 +53,21 @@ init_per_suite(Config) ->
 end_per_suite(_Config) ->
     ok.
 
-init_per_testcase(use_pem_cache, Conf) ->
+init_per_testcase(TC, Conf) when TC =:= use_pem_cache;
+                                 TC =:= bypass_pem_cache;
+                                 TC =:= basic_pem_cache ->
     case bypass_pem_cache_supported() of
         false -> {skipped, "PEM cache bypass support required"};
         true ->
             application:set_env(ssl, bypass_pem_cache, false),
             Conf
     end;
-init_per_testcase(bypass_pem_cache, Conf) ->
-    case bypass_pem_cache_supported() of
-        false -> {skipped, "PEM cache bypass support required"};
-        true ->
-            application:set_env(ssl, bypass_pem_cache, true),
-            Conf
-    end;
 init_per_testcase(_Func, Conf) ->
     Conf.
 
-end_per_testcase(use_pem_cache, _Config) ->
-    case bypass_pem_cache_supported() of
-        false -> ok;
-        true -> application:set_env(ssl, bypass_pem_cache, false)
-    end;
-end_per_testcase(bypass_pem_cache, _Config) ->
+end_per_testcase(TC, _Config) when TC =:= use_pem_cache;
+                                   TC =:= bypass_pem_cache;
+                                   TC =:= basic_pem_cache ->
     case bypass_pem_cache_supported() of
         false -> ok;
         true -> application:set_env(ssl, bypass_pem_cache, false)
@@ -119,6 +113,9 @@ payload_simple(Config) ->
 				 {suite, "ssl"}, {name, "Payload simple"}]}),
     ok.
 
+basic_pem_cache(_Config) ->
+    do_test(ssl, pem_cache, 10, 5, node()).
+
 use_pem_cache(_Config) ->
     {ok, Result} = do_test(ssl, pem_cache, 100, 500, node()),
     ct_event:notify(#event{name = benchmark_data,
@@ -167,7 +164,7 @@ do_test(Type, TC, Loop, ParallellConnections, Server) ->
 		   end
 	   end,
     Spawn = fun(Id) ->
-		    Pid = spawn(fun() -> Test(Id) end),
+		    Pid = spawn_link(fun() -> Test(Id) end),
 		    receive {Pid, init} -> Pid end
 	    end,
     Pids = [Spawn(Id) || Id <- lists:seq(ParallellConnections, 1, -1)],
@@ -184,42 +181,42 @@ do_test(Type, TC, Loop, ParallellConnections, Server) ->
     {ok, TestPerSecond}.
 
 server_init(ssl, setup_connection, _, _, Server) ->
-    {ok, Socket} = ssl:listen(0, ssl_opts(listen)),
-    {ok, {_Host, Port}} = ssl:sockname(Socket),
+    {ok, LSocket} = ssl:listen(0, ssl_opts(listen)),
+    {ok, {_Host, Port}} = ssl:sockname(LSocket),
     {ok, Host} = inet:gethostname(),
     ?FPROF_SERVER andalso start_profile(fprof, [whereis(ssl_manager), new]),
     %%?EPROF_SERVER andalso start_profile(eprof, [ssl_connection_sup, ssl_manager]),
     ?EPROF_SERVER andalso start_profile(eprof, [ssl_manager]),
     Server ! {self(), {init, Host, Port}},
     Test = fun(TSocket) ->
-		   ok = ssl:ssl_accept(TSocket),
-		   ssl:close(TSocket)
+		   {ok, Socket} = ssl:handshake(TSocket),
+		   ssl:close(Socket)
 	   end,
-    setup_server_connection(Socket, Test);
+    setup_server_connection(LSocket, Test);
 server_init(ssl, payload, Loop, _, Server) ->
-    {ok, Socket} = ssl:listen(0, ssl_opts(listen)),
-    {ok, {_Host, Port}} = ssl:sockname(Socket),
+    {ok, LSocket} = ssl:listen(0, ssl_opts(listen)),
+    {ok, {_Host, Port}} = ssl:sockname(LSocket),
     {ok, Host} = inet:gethostname(),
     Server ! {self(), {init, Host, Port}},
     Test = fun(TSocket) ->
-		   ok = ssl:ssl_accept(TSocket),
+		   {ok, Socket} = ssl:handshake(TSocket),
 		   Size = byte_size(msg()),
-		   server_echo(TSocket, Size, Loop),
-		   ssl:close(TSocket)
+		   server_echo(Socket, Size, Loop),
+		   ssl:close(Socket)
 	   end,
-    setup_server_connection(Socket, Test);
+    setup_server_connection(LSocket, Test);
 server_init(ssl, pem_cache, Loop, _, Server) ->
-    {ok, Socket} = ssl:listen(0, ssl_opts(listen_der)),
-    {ok, {_Host, Port}} = ssl:sockname(Socket),
+    {ok, LSocket} = ssl:listen(0, ssl_opts(listen_der)),
+    {ok, {_Host, Port}} = ssl:sockname(LSocket),
     {ok, Host} = inet:gethostname(),
     Server ! {self(), {init, Host, Port}},
     Test = fun(TSocket) ->
-		   ok = ssl:ssl_accept(TSocket),
+		   {ok, Socket} = ssl:handshake(TSocket),
 		   Size = byte_size(msg()),
-		   server_echo(TSocket, Size, Loop),
-		   ssl:close(TSocket)
+		   server_echo(Socket, Size, Loop),
+		   ssl:close(Socket)
 	   end,
-    setup_server_connection(Socket, Test);
+    setup_server_connection(LSocket, Test);
 
 server_init(Type, Tc, _, _, Server) ->
     io:format("No server init code for ~p ~p~n",[Type, Tc]),
diff --git a/lib/ssl/test/ssl_certificate_verify_SUITE.erl b/lib/ssl/test/ssl_certificate_verify_SUITE.erl
index 588ca153a9..4f340af4f5 100644
--- a/lib/ssl/test/ssl_certificate_verify_SUITE.erl
+++ b/lib/ssl/test/ssl_certificate_verify_SUITE.erl
@@ -147,6 +147,7 @@ init_per_testcase(_TestCase, Config) ->
     ssl:stop(),
     ssl:start(),
     ssl_test_lib:ct_log_supported_protocol_versions(Config),
+    ct:pal(" ~p", [ dtls_record:supported_protocol_versions()]),
     ct:timetrap({seconds, 10}),
     Config.
 
@@ -298,15 +299,8 @@ server_require_peer_cert_fail(Config) when is_list(Config) ->
 					      {host, Hostname},
 					      {from, self()},
 					      {options, [{active, Active} | BadClientOpts]}]),
-    receive
-	{Server, {error, {tls_alert, "handshake failure"}}} ->
-	    receive
-		{Client, {error, {tls_alert, "handshake failure"}}} ->
-		    ok;
-		{Client, {error, closed}} ->
-		    ok
-	    end
-    end.
+
+    ssl_test_lib:check_server_alert(Server, Client, handshake_failure).
 
 %%--------------------------------------------------------------------
 server_require_peer_cert_empty_ok() ->
@@ -365,15 +359,8 @@ server_require_peer_cert_partial_chain(Config) when is_list(Config) ->
 					      {options, [{active, Active},
 							 {cacerts, [RootCA]} |
 							 proplists:delete(cacertfile, ClientOpts)]}]),
-    receive
-	{Server, {error, {tls_alert, "unknown ca"}}} ->
-	    receive
-		{Client, {error, {tls_alert, "unknown ca"}}} ->
-		    ok;
-		{Client, {error, closed}} ->
-		    ok
-	    end
-    end.
+    ssl_test_lib:check_server_alert(Server, Client, unknown_ca).
+
 %%--------------------------------------------------------------------
 server_require_peer_cert_allow_partial_chain() ->
     [{doc, "Server trusts intermediat CA and accepts a partial chain. (partial_chain option)"}].
@@ -446,17 +433,7 @@ server_require_peer_cert_do_not_allow_partial_chain(Config) when is_list(Config)
 					      {from, self()},
 					      {mfa, {ssl_test_lib, no_result, []}},
 					      {options, ClientOpts}]),
-
-    receive
-	 {Server, {error, {tls_alert, "unknown ca"}}} ->
-	    receive
-		{Client, {error, {tls_alert, "unknown ca"}}} ->
-		    ok;
-		{Client, {error, closed}} ->
-		    ok
-	    end
-    end.
-
+    ssl_test_lib:check_server_alert(Server, Client, unknown_ca).
  %%--------------------------------------------------------------------
 server_require_peer_cert_partial_chain_fun_fail() ->
     [{doc, "If parial_chain fun crashes, treat it as if it returned unkown_ca"}].
@@ -487,16 +464,7 @@ server_require_peer_cert_partial_chain_fun_fail(Config) when is_list(Config) ->
 					      {from, self()},
 					      {mfa, {ssl_test_lib, no_result, []}},
 					      {options, ClientOpts}]),
-
-    receive
-	 {Server, {error, {tls_alert, "unknown ca"}}} ->
-	    receive
-		{Client, {error, {tls_alert, "unknown ca"}}} ->
-		    ok;
-		{Client, {error, closed}} ->
-		    ok
-	    end
-    end.
+    ssl_test_lib:check_server_alert(Server, Client, unknown_ca).
 
 %%--------------------------------------------------------------------
 verify_fun_always_run_client() ->
@@ -514,7 +482,7 @@ verify_fun_always_run_client(Config) when is_list(Config) ->
     Port  = ssl_test_lib:inet_port(Server),
 
     %% If user verify fun is called correctly we fail the connection.
-    %% otherwise we can not tell this case apart form where we miss
+    %% otherwise we cannot tell this case apart form where we miss
     %% to call users verify fun
     FunAndState =  {fun(_,{extension, _}, UserState) ->
 			    {unknown, UserState};
@@ -535,14 +503,8 @@ verify_fun_always_run_client(Config) when is_list(Config) ->
 					       [{verify, verify_peer},
 						{verify_fun, FunAndState}
 						| ClientOpts]}]),
-    %% Server error may be {tls_alert,"handshake failure"} or closed depending on timing
-    %% this is not a bug it is a circumstance of how tcp works!
-    receive
-	{Server, ServerError} ->
-	    ct:log("Server Error ~p~n", [ServerError])
-    end,
 
-    ssl_test_lib:check_result(Client, {error, {tls_alert, "handshake failure"}}).
+    ssl_test_lib:check_client_alert(Server, Client, handshake_failure).
 
 %%--------------------------------------------------------------------
 verify_fun_always_run_server() ->
@@ -553,7 +515,7 @@ verify_fun_always_run_server(Config) when is_list(Config) ->
     {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
 
     %% If user verify fun is called correctly we fail the connection.
-    %% otherwise we can not tell this case apart form where we miss
+    %% otherwise we cannot tell this case apart form where we miss
     %% to call users verify fun
     FunAndState =  {fun(_,{extension, _}, UserState) ->
 			    {unknown, UserState};
@@ -581,16 +543,8 @@ verify_fun_always_run_server(Config) when is_list(Config) ->
 					      {mfa, {ssl_test_lib,
 						     no_result, []}},
 					      {options, ClientOpts}]),
-
-    %% Client error may be {tls_alert, "handshake failure" } or closed depending on timing
-    %% this is not a bug it is a circumstance of how tcp works!
-    receive
-	{Client, ClientError} ->
-	    ct:log("Client Error ~p~n", [ClientError])
-    end,
-
-    ssl_test_lib:check_result(Server, {error, {tls_alert, "handshake failure"}}).
-
+    
+    ssl_test_lib:check_client_alert(Server, Client, handshake_failure).
 %%--------------------------------------------------------------------
 
 cert_expired() ->
@@ -620,8 +574,7 @@ cert_expired(Config) when is_list(Config) ->
 					      {from, self()},
 					      {options, [{verify, verify_peer}, {active, Active}  | ClientOpts]}]),    
     
-    ssl_test_lib:check_result(Server, {error, {tls_alert, "certificate expired"}},
-                              Client, {error, {tls_alert, "certificate expired"}}).
+    ssl_test_lib:check_client_alert(Server, Client, certificate_expired).
 
 two_digits_str(N) when N < 10 ->
     lists:flatten(io_lib:format("0~p", [N]));
@@ -727,12 +680,8 @@ critical_extension_verify_server(Config) when is_list(Config) ->
                 {options, [{verify, verify_none}, {active, Active} | ClientOpts]}]),
 
     %% This certificate has a critical extension that we don't
-    %% understand.  Therefore, verification should fail.      
-
-    ssl_test_lib:check_result(Server, {error, {tls_alert, "unsupported certificate"}},
-                              Client, {error, {tls_alert, "unsupported certificate"}}),
-    
-    ssl_test_lib:close(Server).
+    %% understand.  Therefore, verification should fail.          
+    ssl_test_lib:check_server_alert(Server, Client, unsupported_certificate).
 %%--------------------------------------------------------------------
 
 critical_extension_verify_client() ->
@@ -763,12 +712,7 @@ critical_extension_verify_client(Config) when is_list(Config) ->
                 {mfa, {ssl_test_lib, ReceiveFunction, []}},
                 {options, [{verify, verify_peer}, {active, Active} | ClientOpts]}]),
 
-    %% This certificate has a critical extension that we don't
-    %% understand.  Therefore, verification should fail.
-    ssl_test_lib:check_result(Server, {error, {tls_alert, "unsupported certificate"}},
-                              Client, {error, {tls_alert, "unsupported certificate"}}),
-
-    ssl_test_lib:close(Server).
+    ssl_test_lib:check_client_alert(Server, Client, unsupported_certificate).
 
 %%--------------------------------------------------------------------
 critical_extension_verify_none() ->
@@ -908,10 +852,7 @@ invalid_signature_server(Config) when is_list(Config) ->
 					      {host, Hostname},
 					      {from, self()},
 					      {options, [{verify, verify_peer} | ClientOpts]}]),
-
-    ssl_test_lib:check_result(Server, {error, {tls_alert, "unknown ca"}},
-                              Client, {error, {tls_alert, "unknown ca"}}).
-
+    ssl_test_lib:check_server_alert(Server, Client, unknown_ca).
 %%--------------------------------------------------------------------
 
 invalid_signature_client() ->
@@ -946,9 +887,7 @@ invalid_signature_client(Config) when is_list(Config) ->
 					      {from, self()},
 					      {options, NewClientOpts}]),
 
-    ssl_test_lib:check_result(Server, {error, {tls_alert, "unknown ca"}},
-                              Client, {error, {tls_alert, "unknown ca"}}).
-
+    ssl_test_lib:check_client_alert(Server, Client, unknown_ca).
 
 %%--------------------------------------------------------------------
 
@@ -1034,16 +973,7 @@ unknown_server_ca_fail(Config) when is_list(Config) ->
 					       [{verify, verify_peer},
 						{verify_fun, FunAndState}
 						| ClientOpts]}]),
-    receive
-	{Client, {error, {tls_alert, "unknown ca"}}} ->
-	    receive
-		{Server, {error, {tls_alert, "unknown ca"}}} ->
-		    ok;
-		{Server, {error, closed}} ->
-		    ok
-	    end
-    end.
-
+    ssl_test_lib:check_client_alert(Server, Client, unknown_ca).
 
 %%--------------------------------------------------------------------
 unknown_server_ca_accept_verify_none() ->
@@ -1193,11 +1123,7 @@ customize_hostname_check(Config) when is_list(Config) ->
                                                {mfa, {ssl_test_lib, no_result, []}},
                                                {options, ClientOpts}
                                               ]),    
-    ssl_test_lib:check_result(Client1, {error, {tls_alert, "handshake failure"}},
-                              Server,  {error, {tls_alert, "handshake failure"}}),
-    
-    ssl_test_lib:close(Server),
-    ssl_test_lib:close(Client).
+    ssl_test_lib:check_client_alert(Server, Client1, handshake_failure).
 
 incomplete_chain() ->
     [{doc,"Test option verify_peer"}].
diff --git a/lib/ssl/test/ssl_cipher_suite_SUITE.erl b/lib/ssl/test/ssl_cipher_suite_SUITE.erl
new file mode 100644
index 0000000000..bf1bc0e752
--- /dev/null
+++ b/lib/ssl/test/ssl_cipher_suite_SUITE.erl
@@ -0,0 +1,772 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2019-2019. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+%%
+
+-module(ssl_cipher_suite_SUITE).
+
+%% Note: This directive should only be used in test suites.
+-compile(export_all).
+
+-include_lib("common_test/include/ct.hrl").
+
+%%--------------------------------------------------------------------
+%% Common Test interface functions -----------------------------------
+%%--------------------------------------------------------------------
+all() -> 
+    [
+     {group, 'tlsv1.2'},
+     {group, 'tlsv1.1'},
+     {group, 'tlsv1'},
+     {group, 'sslv3'},
+     {group, 'dtlsv1.2'},
+     {group, 'dtlsv1'}
+    ].
+
+groups() ->
+    [
+     {'tlsv1.2', [], kex()},
+     {'tlsv1.1', [], kex()},
+     {'tlsv1', [], kex()},
+     {'sslv3', [], kex()},
+     {'dtlsv1.2', [], kex()},
+     {'dtlsv1', [], kex()},
+     {dhe_rsa, [],[dhe_rsa_3des_ede_cbc, 
+                   dhe_rsa_aes_128_cbc,
+                   dhe_rsa_aes_256_cbc,
+                   dhe_rsa_chacha20_poly1305
+                  ]},
+     {ecdhe_rsa, [], [ecdhe_rsa_3des_ede_cbc, 
+                      ecdhe_rsa_aes_128_cbc,
+                      ecdhe_rsa_aes_128_gcm,
+                      ecdhe_rsa_aes_256_cbc,
+                      ecdhe_rsa_aes_256_gcm,
+                      ecdhe_rsa_chacha20_poly1305
+                    ]},
+     {ecdhe_ecdsa, [],[ecdhe_ecdsa_rc4_128, 
+                       ecdhe_ecdsa_3des_ede_cbc, 
+                       ecdhe_ecdsa_aes_128_cbc,
+                       ecdhe_ecdsa_aes_128_gcm,
+                       ecdhe_ecdsa_aes_256_cbc,
+                       ecdhe_ecdsa_aes_256_gcm,
+                       ecdhe_ecdsa_chacha20_poly1305
+                      ]},
+     {rsa, [], [rsa_3des_ede_cbc, 
+                rsa_aes_128_cbc,
+                rsa_aes_256_cbc,
+                rsa_rc4_128
+               ]},
+     {dhe_dss, [], [dhe_dss_3des_ede_cbc, 
+                    dhe_dss_aes_128_cbc,
+                    dhe_dss_aes_256_cbc]},
+     {srp_rsa, [], [srp_rsa_3des_ede_cbc, 
+                    srp_rsa_aes_128_cbc,
+                    srp_rsa_aes_256_cbc]},
+     {srp_dss, [], [srp_dss_3des_ede_cbc, 
+                    srp_dss_aes_128_cbc,
+                    srp_dss_aes_256_cbc]},
+     {rsa_psk, [], [rsa_psk_3des_ede_cbc,                    
+                    rsa_psk_rc4_128,
+                    rsa_psk_aes_128_cbc,
+                    rsa_psk_aes_256_cbc
+                   ]},
+     {dh_anon, [], [dh_anon_rc4_128,
+                    dh_anon_3des_ede_cbc, 
+                    dh_anon_aes_128_cbc,
+                    dh_anon_aes_128_gcm,
+                    dh_anon_aes_256_cbc,
+                    dh_anon_aes_256_gcm]},
+     {ecdh_anon, [], [ecdh_anon_3des_ede_cbc, 
+                      ecdh_anon_aes_128_cbc,
+                      ecdh_anon_aes_256_cbc
+                     ]},     
+     {srp_anon, [], [srp_anon_3des_ede_cbc, 
+                     srp_anon_aes_128_cbc,
+                     srp_anon_aes_256_cbc]},
+     {psk, [], [psk_3des_ede_cbc,                    
+                psk_rc4_128,
+                psk_aes_128_cbc,
+                psk_aes_128_ccm,
+                psk_aes_128_ccm_8,
+                psk_aes_256_cbc,
+                psk_aes_256_ccm,
+                psk_aes_256_ccm_8
+               ]},
+     {dhe_psk, [], [dhe_psk_3des_ede_cbc,                    
+                    dhe_psk_rc4_128,
+                    dhe_psk_aes_128_cbc,
+                    dhe_psk_aes_128_ccm,
+                    dhe_psk_aes_128_ccm_8,
+                    dhe_psk_aes_256_cbc,
+                    dhe_psk_aes_256_ccm,
+                    dhe_psk_aes_256_ccm_8
+               ]},
+     {ecdhe_psk, [], [ecdhe_psk_3des_ede_cbc,                    
+                     ecdhe_psk_rc4_128,
+                     ecdhe_psk_aes_128_cbc,
+                     ecdhe_psk_aes_128_ccm,
+                     ecdhe_psk_aes_128_ccm_8,
+                     ecdhe_psk_aes_256_cbc
+               ]}
+    ].
+
+
+kex() ->
+     rsa() ++ ecdsa() ++ dss() ++ anonymous().
+
+rsa() ->
+    [{group, dhe_rsa},
+     {group, ecdhe_rsa},
+     {group, rsa},
+     {group, srp_rsa},
+     {group, rsa_psk}
+    ].
+
+ecdsa() ->
+    [{group, ecdhe_ecdsa}].
+    
+dss() ->
+    [{group, dhe_dss},
+     {group, srp_dss}].
+
+anonymous() ->
+    [{group, dh_anon},
+     {group, ecdh_anon},
+     {group, psk},
+     {group, dhe_psk},
+     {group, ecdhe_psk},
+     {group, srp_anon}
+    ].
+    
+
+init_per_suite(Config) ->
+    catch crypto:stop(),
+    try crypto:start() of
+	ok ->
+	    ssl_test_lib:clean_start(),
+            Config
+    catch _:_ ->
+	    {skip, "Crypto did not start"}
+    end.
+
+end_per_suite(_Config) ->
+    ssl:stop(),
+    application:stop(crypto).
+
+%%--------------------------------------------------------------------
+init_per_group(GroupName, Config) when GroupName == ecdh_anon;
+                                       GroupName == ecdhe_rsa;
+                                       GroupName == ecdhe_psk ->
+    case proplists:get_bool(ecdh, proplists:get_value(public_keys, crypto:supports())) of
+        true ->
+            init_certs(GroupName, Config);
+        false ->
+            {skip, "Missing EC crypto support"}
+    end;
+init_per_group(ecdhe_ecdsa = GroupName, Config) ->
+    PKAlg = proplists:get_value(public_keys, crypto:supports()),
+    case lists:member(ecdh, PKAlg) andalso lists:member(ecdsa, PKAlg) of
+        true ->
+            init_certs(GroupName, Config);
+        false ->
+            {skip, "Missing EC crypto support"}
+    end;
+init_per_group(dhe_dss = GroupName, Config) ->
+    PKAlg = proplists:get_value(public_keys, crypto:supports()),
+    case lists:member(dss, PKAlg) andalso lists:member(dh, PKAlg) of
+        true ->
+            init_certs(GroupName, Config);
+        false ->
+            {skip, "Missing DSS crypto support"}
+    end;
+init_per_group(srp_dss = GroupName, Config) ->
+    PKAlg = proplists:get_value(public_keys, crypto:supports()),
+    case lists:member(dss, PKAlg) andalso lists:member(srp, PKAlg) of
+        true ->
+            init_certs(GroupName, Config);
+        false ->
+            {skip, "Missing DSS_SRP crypto support"}
+    end;
+init_per_group(GroupName, Config) when GroupName == srp_anon;
+                                       GroupName == srp_rsa ->
+    PKAlg = proplists:get_value(public_keys, crypto:supports()),
+    case lists:member(srp, PKAlg) of
+        true ->
+            init_certs(GroupName, Config);
+        false ->
+            {skip, "Missing SRP crypto support"}
+    end;
+init_per_group(dhe_psk = GroupName, Config) ->
+    PKAlg = proplists:get_value(public_keys, crypto:supports()),
+    case lists:member(dh, PKAlg) of
+        true ->
+            init_certs(GroupName, Config);
+        false ->
+            {skip, "Missing SRP crypto support"}
+    end;
+init_per_group(GroupName, Config0) ->
+    case ssl_test_lib:is_tls_version(GroupName) of
+        true ->
+            ssl_test_lib:init_tls_version(GroupName, end_per_group(GroupName, Config0));
+        false ->
+            init_certs(GroupName, Config0)
+    end.
+  
+end_per_group(GroupName, Config) ->
+  case ssl_test_lib:is_tls_version(GroupName) of
+      true ->
+          ssl_test_lib:clean_tls_version(Config);
+      false ->
+          Config
+  end.
+init_per_testcase(TestCase, Config) when TestCase == psk_3des_ede_cbc;
+                                         TestCase == srp_anon_3des_ede_cbc;
+                                         TestCase == dhe_psk_3des_ede_cbc;
+                                         TestCase == ecdhe_psk_3des_ede_cbc;
+                                         TestCase == srp_rsa_3des_ede_cbc;
+                                         TestCase == srp_dss_3des_ede_cbc;
+                                         TestCase == rsa_psk_3des_ede_cbc;
+                                         TestCase == rsa_3des_ede_cbc;
+                                         TestCase == dhe_rsa_3des_ede_cbc;
+                                         TestCase == dhe_dss_3des_ede_cbc;
+                                         TestCase == ecdhe_rsa_3des_ede_cbc;
+                                         TestCase == srp_anon_dss_3des_ede_cbc;
+                                         TestCase == dh_anon_3des_ede_cbc;
+                                         TestCase == ecdh_anon_3des_ede_cbc;
+                                         TestCase == ecdhe_ecdsa_3des_ede_cbc ->
+    SupCiphers = proplists:get_value(ciphers, crypto:supports()),
+    case lists:member(des_ede3, SupCiphers) of
+        true ->
+            ct:timetrap({seconds, 5}),
+            Config;
+        _ ->
+            {skip, "Missing 3DES crypto support"}
+    end;
+init_per_testcase(TestCase, Config) when TestCase == psk_rc4_128;
+                                         TestCase == ecdhe_psk_rc4_128;
+                                         TestCase == dhe_psk_rc4_128;
+                                         TestCase == rsa_psk_rc4_128;
+                                         TestCase == rsa_rc4_128;
+                                         TestCase == ecdhe_rsa_rc4_128;
+                                         TestCase == ecdhe_ecdsa_rc4_128;
+                                         TestCase == dh_anon_rc4_128 ->
+    SupCiphers = proplists:get_value(ciphers, crypto:supports()),
+    case lists:member(rc4, SupCiphers) of
+        true ->
+            ct:timetrap({seconds, 5}),
+            Config;
+        _ ->
+            {skip, "Missing RC4 crypto support"}
+    end;
+init_per_testcase(TestCase, Config) when  TestCase == psk_aes_128_ccm_8;
+                                          TestCase == rsa_psk_aes_128_ccm_8;
+                                          TestCase == psk_aes_128_ccm_8;
+                                          TestCase == dhe_psk_aes_128_ccm_8;
+                                          TestCase == ecdhe_psk_aes_128_ccm_8 ->
+    SupCiphers = proplists:get_value(ciphers, crypto:supports()),
+    case lists:member(aes_128_ccm, SupCiphers) of
+        true ->
+            ct:timetrap({seconds, 5}),
+            Config;
+        _ ->
+            {skip, "Missing AES_128_CCM crypto support"}
+    end;
+init_per_testcase(TestCase, Config) when TestCase == psk_aes_256_ccm_8;
+                                         TestCase == rsa_psk_aes_256_ccm_8;
+                                         TestCase == psk_aes_256_ccm_8;
+                                         TestCase == dhe_psk_aes_256_ccm_8;
+                                         TestCase == ecdhe_psk_aes_256_ccm_8 ->
+    SupCiphers = proplists:get_value(ciphers, crypto:supports()),
+    case lists:member(aes_256_ccm, SupCiphers) of
+        true ->
+            ct:timetrap({seconds, 5}),
+            Config;
+        _ ->
+            {skip, "Missing AES_256_CCM crypto support"}
+    end;
+init_per_testcase(TestCase, Config) ->
+    Cipher = test_cipher(TestCase, Config),
+    %%Reason = io_lib:format("Missing ~p crypto support", [Cipher]),
+    SupCiphers = proplists:get_value(ciphers, crypto:supports()),
+    case lists:member(Cipher, SupCiphers) of
+        true ->
+            ct:timetrap({seconds, 5}),
+            Config;
+        _ ->
+            {skip, {Cipher, SupCiphers}}
+    end.
+
+end_per_testcase(_TestCase, Config) ->
+    Config.
+
+init_certs(srp_rsa, Config) ->
+    DefConf = ssl_test_lib:default_cert_chain_conf(),
+    CertChainConf = ssl_test_lib:gen_conf(rsa, rsa, DefConf, DefConf),
+    #{server_config := ServerOpts,
+      client_config := ClientOpts} 
+        = public_key:pkix_test_data(CertChainConf),
+    [{tls_config, #{server_config => [{user_lookup_fun, {fun user_lookup/3, undefined}} | ServerOpts],
+                    client_config => [{srp_identity, {"Test-User", "secret"}} | ClientOpts]}} |
+     proplists:delete(tls_config, Config)];
+init_certs(srp_anon, Config) ->
+    [{tls_config, #{server_config => [{user_lookup_fun, {fun user_lookup/3, undefined}}],
+                    client_config => [{srp_identity, {"Test-User", "secret"}}]}} |
+     proplists:delete(tls_config, Config)];
+init_certs(rsa_psk, Config) ->
+    ClientExt = x509_test:extensions([{key_usage, [digitalSignature, keyEncipherment]}]),
+    {ClientOpts, ServerOpts} = ssl_test_lib:make_rsa_cert_chains([{server_chain, 
+                                                                   [[],[],[{extensions, ClientExt}]]}], 
+                                                                 Config, "_peer_keyEncipherment"),
+    PskSharedSecret = <<1,2,3,4,5,6,7,8,9,10,11,12,13,14,15>>,
+    [{tls_config, #{server_config => [{user_lookup_fun, {fun user_lookup/3, PskSharedSecret}} | ServerOpts],
+                    client_config => [{psk_identity, "Test-User"},
+                                      {user_lookup_fun, {fun user_lookup/3, PskSharedSecret}} | ClientOpts]}} |
+     proplists:delete(tls_config, Config)];
+init_certs(rsa, Config) ->
+    ClientExt = x509_test:extensions([{key_usage, [digitalSignature, keyEncipherment]}]),
+    {ClientOpts, ServerOpts} = ssl_test_lib:make_rsa_cert_chains([{server_chain, 
+                                                                   [[],[],[{extensions, ClientExt}]]}], 
+                                                                 Config, "_peer_keyEncipherment"),
+    [{tls_config, #{server_config => ServerOpts,
+                    client_config => ClientOpts}} |
+     proplists:delete(tls_config, Config)];
+init_certs(dhe_dss, Config) ->
+    DefConf = ssl_test_lib:default_cert_chain_conf(),
+    CertChainConf = ssl_test_lib:gen_conf(dsa, dsa, DefConf, DefConf),
+    #{server_config := ServerOpts,
+      client_config := ClientOpts} 
+        = public_key:pkix_test_data(CertChainConf),
+    [{tls_config, #{server_config => ServerOpts,
+                    client_config => ClientOpts}} |
+     proplists:delete(tls_config, Config)];
+init_certs(srp_dss, Config) ->
+    DefConf = ssl_test_lib:default_cert_chain_conf(),
+    CertChainConf = ssl_test_lib:gen_conf(dsa, dsa, DefConf, DefConf),
+    #{server_config := ServerOpts,
+      client_config := ClientOpts} 
+        = public_key:pkix_test_data(CertChainConf),
+    [{tls_config, #{server_config => [{user_lookup_fun, {fun user_lookup/3, undefined}} | ServerOpts],
+                    client_config => [{srp_identity, {"Test-User", "secret"}} | ClientOpts]}} |
+       proplists:delete(tls_config, Config)];
+init_certs(GroupName, Config) when GroupName == dhe_rsa;
+                                   GroupName == ecdhe_rsa ->
+    DefConf = ssl_test_lib:default_cert_chain_conf(),
+    CertChainConf = ssl_test_lib:gen_conf(rsa, rsa, DefConf, DefConf),
+    #{server_config := ServerOpts,
+      client_config := ClientOpts} 
+        = public_key:pkix_test_data(CertChainConf),
+    [{tls_config, #{server_config => ServerOpts,
+                    client_config => ClientOpts}} |
+     proplists:delete(tls_config, Config)];
+init_certs(GroupName, Config) when GroupName == dhe_ecdsa;
+                                   GroupName == ecdhe_ecdsa ->
+    DefConf = ssl_test_lib:default_cert_chain_conf(),
+    CertChainConf = ssl_test_lib:gen_conf(ecdsa, ecdsa, DefConf, DefConf),
+    #{server_config := ServerOpts,
+      client_config := ClientOpts} 
+        = public_key:pkix_test_data(CertChainConf),
+    [{tls_config, #{server_config => ServerOpts,
+                    client_config => ClientOpts}} |
+     proplists:delete(tls_config, Config)];
+init_certs(GroupName, Config) when GroupName == psk;
+                                   GroupName == dhe_psk;
+                                   GroupName == ecdhe_psk ->
+    PskSharedSecret = <<1,2,3,4,5,6,7,8,9,10,11,12,13,14,15>>,
+    [{tls_config, #{server_config => [{user_lookup_fun, {fun user_lookup/3, PskSharedSecret}}],
+                    client_config => [{psk_identity, "Test-User"},
+                                      {user_lookup_fun, {fun user_lookup/3, PskSharedSecret}}]}} |
+     proplists:delete(tls_config, Config)]; 
+init_certs(srp, Config) -> 
+      [{tls_config, #{server_config => [{user_lookup_fun, {fun user_lookup/3, undefined}}],
+                      client_config => [{srp_identity, {"Test-User", "secret"}}]}} |
+       proplists:delete(tls_config, Config)];
+init_certs(_GroupName, Config) -> 
+    %% Anonymous does not need certs
+     [{tls_config, #{server_config => [],
+                     client_config => []}} |
+       proplists:delete(tls_config, Config)].
+%%--------------------------------------------------------------------
+%% Test Cases --------------------------------------------------------
+%%--------------------------------------------------------------------
+
+%%--------------------------------------------------------------------
+%% SRP --------------------------------------------------------
+%%--------------------------------------------------------------------
+srp_rsa_3des_ede_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(srp_rsa, '3des_ede_cbc', Config).                 
+    
+srp_rsa_aes_128_cbc(Config) when is_list(Config) ->
+   run_ciphers_test(srp_rsa, 'aes_128_cbc', Config).             
+
+srp_rsa_aes_256_cbc(Config) when is_list(Config) ->
+   run_ciphers_test(srp_rsa, 'aes_256_cbc', Config).             
+
+srp_dss_3des_ede_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(srp_dss, '3des_ede_cbc', Config).                 
+    
+srp_dss_aes_128_cbc(Config) when is_list(Config) ->
+   run_ciphers_test(srp_dss, 'aes_128_cbc', Config).             
+
+srp_dss_aes_256_cbc(Config) when is_list(Config) ->
+   run_ciphers_test(srp_dss, 'aes_256_cbc', Config).     
+
+%%--------------------------------------------------------------------
+%% PSK --------------------------------------------------------
+%%--------------------------------------------------------------------
+rsa_psk_3des_ede_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(rsa_psk, '3des_ede_cbc', Config).            
+
+rsa_psk_aes_128_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(rsa_psk, 'aes_128_cbc', Config).             
+
+rsa_psk_aes_128_ccm(Config) when is_list(Config) ->
+    run_ciphers_test(rsa_psk, 'aes_128_ccm', Config).             
+
+rsa_psk_aes_128_ccm_8(Config) when is_list(Config) ->
+    run_ciphers_test(rsa_psk, 'aes_128_ccm_8', Config).             
+
+rsa_psk_aes_256_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(rsa_psk, 'aes_256_cbc', Config). 
+
+rsa_psk_aes_256_ccm(Config) when is_list(Config) ->
+    run_ciphers_test(rsa_psk, 'aes_256_ccm', Config).             
+
+rsa_psk_aes_256_ccm_8(Config) when is_list(Config) ->
+    run_ciphers_test(rsa_psk, 'aes_256_ccm_8', Config).             
+     
+rsa_psk_rc4_128(Config) when is_list(Config) ->
+    run_ciphers_test(rsa_psk, 'rc4_128', Config).    
+         
+%%--------------------------------------------------------------------
+%% RSA --------------------------------------------------------
+%%--------------------------------------------------------------------
+rsa_des_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(rsa, 'des_cbc', Config).            
+
+rsa_3des_ede_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(rsa, '3des_ede_cbc', Config).            
+
+rsa_aes_128_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(rsa, 'aes_128_cbc', Config).             
+
+rsa_aes_256_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(rsa, 'aes_256_cbc', Config).
+
+rsa_aes_128_gcm(Config) when is_list(Config) ->
+    run_ciphers_test(rsa, 'aes_128_gcm', Config).             
+
+rsa_aes_256_gcm(Config) when is_list(Config) ->
+    run_ciphers_test(rsa, 'aes_256_gcm', Config).
+
+rsa_rc4_128(Config) when is_list(Config) ->
+    run_ciphers_test(rsa, 'rc4_128', Config).    
+%%--------------------------------------------------------------------
+%% DHE_RSA --------------------------------------------------------
+%%--------------------------------------------------------------------
+dhe_rsa_3des_ede_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(dhe_rsa, '3des_ede_cbc', Config).         
+
+dhe_rsa_aes_128_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(dhe_rsa, 'aes_128_cbc', Config).   
+
+dhe_rsa_aes_128_gcm(Config) when is_list(Config) ->
+    run_ciphers_test(dhe_rsa, 'aes_128_gcm', Config).   
+
+dhe_rsa_aes_256_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(dhe_rsa, 'aes_256_cbc', Config).   
+
+dhe_rsa_aes_256_gcm(Config) when is_list(Config) ->
+    run_ciphers_test(dhe_rsa, 'aes_256_gcm', Config).
+
+dhe_rsa_chacha20_poly1305(Config) when is_list(Config) ->
+    run_ciphers_test(dhe_rsa, 'chacha20_poly1305', Config).
+%%--------------------------------------------------------------------
+%% ECDHE_RSA --------------------------------------------------------
+%%--------------------------------------------------------------------
+ecdhe_rsa_3des_ede_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(ecdhe_rsa, '3des_ede_cbc', Config).         
+
+ecdhe_rsa_aes_128_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(ecdhe_rsa, 'aes_128_cbc', Config).         
+
+ecdhe_rsa_aes_128_gcm(Config) when is_list(Config) ->
+    run_ciphers_test(ecdhe_rsa, 'aes_128_gcm', Config).         
+
+ecdhe_rsa_aes_256_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(ecdhe_rsa, 'aes_256_cbc', Config).   
+
+ecdhe_rsa_aes_256_gcm(Config) when is_list(Config) ->
+    run_ciphers_test(ecdhe_rsa, 'aes_256_gcm', Config).   
+
+ecdhe_rsa_rc4_128(Config) when is_list(Config) ->
+    run_ciphers_test(ecdhe_rsa, 'rc4_128', Config).      
+
+ecdhe_rsa_chacha20_poly1305(Config) when is_list(Config) ->
+    run_ciphers_test(ecdhe_rsa, 'chacha20_poly1305', Config).
+
+%%--------------------------------------------------------------------
+%% ECDHE_ECDSA --------------------------------------------------------
+%%--------------------------------------------------------------------
+ecdhe_ecdsa_rc4_128(Config) when is_list(Config) ->
+    run_ciphers_test(ecdhe_ecdsa, 'rc4_128', Config).         
+
+ecdhe_ecdsa_3des_ede_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(ecdhe_ecdsa, '3des_ede_cbc', Config).         
+
+ecdhe_ecdsa_aes_128_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(ecdhe_ecdsa, 'aes_128_cbc', Config).         
+
+ecdhe_ecdsa_aes_128_gcm(Config) when is_list(Config) ->
+    run_ciphers_test(ecdhe_ecdsa, 'aes_128_gcm', Config).         
+
+ecdhe_ecdsa_aes_256_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(ecdhe_ecdsa, 'aes_256_cbc', Config).   
+
+ecdhe_ecdsa_aes_256_gcm(Config) when is_list(Config) ->
+    run_ciphers_test(ecdhe_ecdsa, 'aes_256_gcm', Config).   
+
+ecdhe_ecdsa_chacha20_poly1305(Config) when is_list(Config) ->
+    run_ciphers_test(ecdhe_ecdsa, 'chacha20_poly1305', Config).
+%%--------------------------------------------------------------------
+%% DHE_DSS --------------------------------------------------------
+%%--------------------------------------------------------------------
+dhe_dss_des_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(dhe_dss, 'des_cbc', Config).            
+
+dhe_dss_3des_ede_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(dhe_dss, '3des_ede_cbc', Config).            
+
+dhe_dss_aes_128_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(dhe_dss, 'aes_128_cbc', Config).             
+
+dhe_dss_aes_256_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(dhe_dss, 'aes_256_cbc', Config).
+
+dhe_dss_aes_128_gcm(Config) when is_list(Config) ->
+    run_ciphers_test(dhe_dss, 'aes_128_gcm', Config).             
+
+dhe_dss_aes_256_gcm(Config) when is_list(Config) ->
+    run_ciphers_test(dhe_dss, 'aes_256_gcm', Config).
+
+%%--------------------------------------------------------------------
+%% Anonymous --------------------------------------------------------
+%%--------------------------------------------------------------------
+dh_anon_3des_ede_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(dh_anon, '3des_ede_cbc', Config).         
+
+dh_anon_aes_128_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(dh_anon, 'aes_128_cbc', Config).         
+
+dh_anon_aes_128_gcm(Config) when is_list(Config) ->
+    run_ciphers_test(dh_anon, 'aes_128_gcm', Config).         
+
+dh_anon_aes_256_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(dh_anon, 'aes_256_cbc', Config).   
+
+dh_anon_aes_256_gcm(Config) when is_list(Config) ->
+    run_ciphers_test(dh_anon, 'aes_256_gcm', Config).   
+
+dh_anon_rc4_128(Config) when is_list(Config) ->
+    run_ciphers_test(dh_anon, 'rc4_128', Config).      
+
+ecdh_anon_3des_ede_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(ecdh_anon, '3des_ede_cbc', Config).         
+
+ecdh_anon_aes_128_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(ecdh_anon, 'aes_128_cbc', Config).   
+
+ecdh_anon_aes_256_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(ecdh_anon, 'aes_256_cbc', Config).   
+
+srp_anon_3des_ede_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(srp_anon, '3des_ede_cbc', Config).                 
+    
+srp_anon_aes_128_cbc(Config) when is_list(Config) ->
+   run_ciphers_test(srp_anon, 'aes_128_cbc', Config).             
+
+srp_anon_aes_256_cbc(Config) when is_list(Config) ->
+   run_ciphers_test(srp_anon, 'aes_256_cbc', Config).     
+
+dhe_psk_des_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(dhe_psk, 'des_cbc', Config).            
+
+dhe_psk_rc4_128(Config) when is_list(Config) ->
+    run_ciphers_test(dhe_psk, 'rc4_128', Config).            
+
+dhe_psk_3des_ede_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(dhe_psk, '3des_ede_cbc', Config).            
+
+dhe_psk_aes_128_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(dhe_psk, 'aes_128_cbc', Config).             
+
+dhe_psk_aes_256_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(dhe_psk, 'aes_256_cbc', Config).
+
+dhe_psk_aes_128_gcm(Config) when is_list(Config) ->
+    run_ciphers_test(dhe_psk, 'aes_128_gcm', Config).             
+
+dhe_psk_aes_256_gcm(Config) when is_list(Config) ->
+    run_ciphers_test(dhe_psk, 'aes_256_gcm', Config).
+
+dhe_psk_aes_128_ccm(Config) when is_list(Config) ->
+    run_ciphers_test(dhe_psk, 'aes_128_ccm', Config).             
+
+dhe_psk_aes_256_ccm(Config) when is_list(Config) ->
+    run_ciphers_test(dhe_psk, 'aes_256_ccm', Config).
+
+dhe_psk_aes_128_ccm_8(Config) when is_list(Config) ->
+    run_ciphers_test(dhe_psk, 'aes_128_ccm_8', Config).
+
+dhe_psk_aes_256_ccm_8(Config) when is_list(Config) ->
+    run_ciphers_test(dhe_psk, 'aes_256_ccm_8', Config).
+
+ecdhe_psk_des_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(ecdhe_psk, 'des_cbc', Config).            
+
+ecdhe_psk_rc4_128(Config) when is_list(Config) ->
+    run_ciphers_test(ecdhe_psk, 'rc4_128', Config).            
+
+ecdhe_psk_3des_ede_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(ecdhe_psk, '3des_ede_cbc', Config).            
+
+ecdhe_psk_aes_128_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(ecdhe_psk, 'aes_128_cbc', Config).             
+
+ecdhe_psk_aes_256_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(ecdhe_psk, 'aes_256_cbc', Config).
+
+ecdhe_psk_aes_128_gcm(Config) when is_list(Config) ->
+    run_ciphers_test(ecdhe_psk, 'aes_128_gcm', Config).             
+
+ecdhe_psk_aes_256_gcm(Config) when is_list(Config) ->
+    run_ciphers_test(ecdhe_psk, 'aes_256_gcm', Config).
+
+ecdhe_psk_aes_128_ccm(Config) when is_list(Config) ->
+    run_ciphers_test(ecdhe_psk, 'aes_128_ccm', Config).             
+
+ecdhe_psk_aes_128_ccm_8(Config) when is_list(Config) ->
+    run_ciphers_test(ecdhe_psk, 'aes_128_ccm_8', Config).
+
+psk_des_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(psk, 'des_cbc', Config).            
+
+psk_rc4_128(Config) when is_list(Config) ->
+    run_ciphers_test(psk, 'rc4_128', Config).            
+
+psk_3des_ede_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(psk, '3des_ede_cbc', Config).            
+
+psk_aes_128_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(psk, 'aes_128_cbc', Config).             
+
+psk_aes_256_cbc(Config) when is_list(Config) ->
+    run_ciphers_test(psk, 'aes_256_cbc', Config).
+
+psk_aes_128_gcm(Config) when is_list(Config) ->
+    run_ciphers_test(psk, 'aes_128_gcm', Config).             
+
+psk_aes_256_gcm(Config) when is_list(Config) ->
+    run_ciphers_test(psk, 'aes_256_gcm', Config).
+
+psk_aes_128_ccm(Config) when is_list(Config) ->
+    run_ciphers_test(psk, 'aes_128_ccm', Config).             
+
+psk_aes_256_ccm(Config) when is_list(Config) ->
+    run_ciphers_test(psk, 'aes_256_ccm', Config).
+
+psk_aes_128_ccm_8(Config) when is_list(Config) ->
+    run_ciphers_test(psk, 'aes_128_ccm_8', Config).             
+
+psk_aes_256_ccm_8(Config) when is_list(Config) ->
+    run_ciphers_test(psk, 'aes_256_ccm_8', Config).
+
+%%--------------------------------------------------------------------
+%% Internal functions  ----------------------------------------------
+%%--------------------------------------------------------------------
+test_cipher(TestCase, Config) ->
+    [{name, Group} |_] = proplists:get_value(tc_group_properties, Config),
+    list_to_atom(re:replace(atom_to_list(TestCase), atom_to_list(Group) ++ "_",  "", [{return, list}])).
+
+run_ciphers_test(Kex, Cipher, Config) ->
+    Version = ssl_test_lib:protocol_version(Config),
+    TestCiphers = test_ciphers(Kex, Cipher, Version),                  
+    
+    case TestCiphers of
+        [_|_] -> 
+            lists:foreach(fun(TestCipher) -> 
+                                  cipher_suite_test(TestCipher, Version, Config)
+                          end, TestCiphers);
+        []  ->
+            {skip, {not_sup, Kex, Cipher, Version}}
+    end.
+
+cipher_suite_test(CipherSuite, Version, Config) ->
+    #{server_config := SOpts,
+      client_config := COpts} = proplists:get_value(tls_config, Config),
+    ServerOpts = ssl_test_lib:ssl_options(SOpts, Config),
+    ClientOpts = ssl_test_lib:ssl_options(COpts, Config),
+    ct:log("Testing CipherSuite ~p~n", [CipherSuite]),
+    ct:log("Server Opts ~p~n", [ServerOpts]),
+    ct:log("Client Opts ~p~n", [ClientOpts]),
+    {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
+
+    ErlangCipherSuite = erlang_cipher_suite(CipherSuite),
+
+    ConnectionInfo = {ok, {Version, ErlangCipherSuite}},
+    
+    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0},
+					{from, self()},
+                                        {mfa, {ssl_test_lib, cipher_result, [ConnectionInfo]}},
+                                        {options, [{versions, [Version]}, {ciphers, [CipherSuite]} | ServerOpts]}]),
+    Port = ssl_test_lib:inet_port(Server),
+    Client = ssl_test_lib:start_client([{node, ClientNode}, {port, Port},
+					{host, Hostname},
+					{from, self()},
+					{mfa, {ssl_test_lib, cipher_result, [ConnectionInfo]}},
+					{options, [{versions, [Version]}, {ciphers, [CipherSuite]} |
+                                                   ClientOpts]}]),
+
+    ssl_test_lib:check_result(Server, ok, Client, ok),
+    
+    ssl_test_lib:close(Server),
+    ssl_test_lib:close(Client).
+
+erlang_cipher_suite(Suite) when is_list(Suite)->
+    ssl_cipher_format:suite_definition(ssl_cipher_format:openssl_suite(Suite));
+erlang_cipher_suite(Suite) ->
+    Suite.
+
+user_lookup(psk, _Identity, UserState) ->
+    {ok, UserState};
+user_lookup(srp, Username, _UserState) ->
+    Salt = ssl_cipher:random_bytes(16),
+    UserPassHash = crypto:hash(sha, [Salt, crypto:hash(sha, [Username, <<$:>>, <<"secret">>])]),
+    {ok, {srp_1024, Salt, UserPassHash}}.
+
+test_ciphers(Kex, Cipher, Version) ->
+    ssl:filter_cipher_suites(ssl:cipher_suites(all, Version) ++ ssl:cipher_suites(anonymous, Version), 
+                             [{key_exchange, 
+                               fun(Kex0) when Kex0 == Kex -> true; 
+                                  (_) -> false 
+                               end}, 
+                              {cipher,  
+                               fun(Cipher0) when Cipher0 == Cipher -> true; 
+                                  (_) -> false 
+                               end}]).
diff --git a/lib/ssl/test/ssl_crl_SUITE.erl b/lib/ssl/test/ssl_crl_SUITE.erl
index 23c5eaf84d..b2fd3874a8 100644
--- a/lib/ssl/test/ssl_crl_SUITE.erl
+++ b/lib/ssl/test/ssl_crl_SUITE.erl
@@ -238,7 +238,7 @@ crl_verify_revoked(Config)  when is_list(Config) ->
 		  end,	
     
     crl_verify_error(Hostname, ServerNode, ServerOpts, ClientNode, ClientOpts,
-                     "certificate revoked").
+                     certificate_revoked).
 
 crl_verify_no_crl() ->
     [{doc,"Verify a simple CRL chain when the CRL is missing"}].
@@ -277,10 +277,10 @@ crl_verify_no_crl(Config) when is_list(Config) ->
             %% The error "revocation status undetermined" gets turned
             %% into "bad certificate".
             crl_verify_error(Hostname, ServerNode, ServerOpts, ClientNode, ClientOpts,
-                             "bad certificate");
+                             bad_certificate);
         peer ->
             crl_verify_error(Hostname, ServerNode, ServerOpts, ClientNode, ClientOpts,
-                             "bad certificate");
+                             bad_certificate);
         best_effort ->
             %% In "best effort" mode, we consider the certificate not
             %% to be revoked if we can't find the appropriate CRL.
@@ -341,7 +341,7 @@ crl_hash_dir_collision(Config) when is_list(Config) ->
 
     %% First certificate revoked; first fails, second succeeds.
     crl_verify_error(Hostname, ServerNode, ServerOpts1, ClientNode, ClientOpts,
-                     "certificate revoked"),
+                     certificate_revoked),
     crl_verify_valid(Hostname, ServerNode, ServerOpts2, ClientNode, ClientOpts),
 
     make_certs:revoke(PrivDir, CA2, "collision-client-2", CertsConfig),
@@ -352,9 +352,9 @@ crl_hash_dir_collision(Config) when is_list(Config) ->
 
     %% Second certificate revoked; both fail.
     crl_verify_error(Hostname, ServerNode, ServerOpts1, ClientNode, ClientOpts,
-                     "certificate revoked"),
+                     certificate_revoked),
     crl_verify_error(Hostname, ServerNode, ServerOpts2, ClientNode, ClientOpts,
-                     "certificate revoked"),
+                     certificate_revoked),
 
     ok.
 
@@ -383,8 +383,11 @@ crl_hash_dir_expired(Config) when is_list(Config) ->
 	 {verify, verify_peer}],
     {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
 
-    %% First make a CRL that expired yesterday.
-    make_certs:gencrl(PrivDir, CA, CertsConfig, -24),
+    %% First make a CRL that will expire in one second.
+    make_certs:gencrl_sec(PrivDir, CA, CertsConfig, 1),
+    %% Sleep until the next CRL is due
+    ct:sleep({seconds, 1}),
+
     CrlDir = filename:join(PrivDir, "crls"),
     populate_crl_hash_dir(PrivDir, CrlDir,
 			  [{CA, "1627b4b0"}],
@@ -397,10 +400,10 @@ crl_hash_dir_expired(Config) when is_list(Config) ->
             %% The error "revocation status undetermined" gets turned
             %% into "bad certificate".
             crl_verify_error(Hostname, ServerNode, ServerOpts, ClientNode, ClientOpts,
-                             "bad certificate");
+                             bad_certificate);
         peer ->
             crl_verify_error(Hostname, ServerNode, ServerOpts, ClientNode, ClientOpts,
-                             "bad certificate");
+                             bad_certificate);
         best_effort ->
             %% In "best effort" mode, we consider the certificate not
             %% to be revoked if we can't find the appropriate CRL.
@@ -448,11 +451,8 @@ crl_verify_error(Hostname, ServerNode, ServerOpts, ClientNode, ClientOpts, Expec
 					      {host, Hostname},
 					      {from, self()},
 					      {options, ClientOpts}]),
-    receive
-	{Server, AlertOrClose} ->
-	    ct:pal("Server Alert or Close ~p", [AlertOrClose])
-    end,
-    ssl_test_lib:check_result(Client, {error, {tls_alert, ExpectedAlert}}).
+
+    ssl_test_lib:check_client_alert(Server, Client, ExpectedAlert).
 
 %%--------------------------------------------------------------------
 %% Internal functions ------------------------------------------------
diff --git a/lib/ssl/test/ssl_dist_bench_SUITE.erl b/lib/ssl/test/ssl_dist_bench_SUITE.erl
index 7409b69639..1fea6f6f72 100644
--- a/lib/ssl/test/ssl_dist_bench_SUITE.erl
+++ b/lib/ssl/test/ssl_dist_bench_SUITE.erl
@@ -1,7 +1,7 @@
 %%%-------------------------------------------------------------------
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2017-2018. All Rights Reserved.
+%% Copyright Ericsson AB 2017-2019. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -32,6 +32,7 @@
 -export(
    [setup/1,
     roundtrip/1,
+    sched_utilization/1,
     throughput_0/1,
     throughput_64/1,
     throughput_1024/1,
@@ -42,20 +43,25 @@
     throughput_1048576/1]).
 
 %% Debug
--export([payload/1]).
+-export([payload/1, roundtrip_runner/3, setup_runner/3, throughput_runner/4]).
 
 %%%-------------------------------------------------------------------
 
 suite() -> [{ct_hooks, [{ts_install_cth, [{nodenames, 2}]}]}].
 
-all() -> [{group, ssl}, {group, plain}].
+all() ->
+    [{group, ssl},
+     {group, crypto},
+     {group, plain}].
 
 groups() ->
     [{ssl, all_groups()},
+     {crypto, all_groups()},
      {plain, all_groups()},
      %%
      {setup, [{repeat, 1}], [setup]},
      {roundtrip, [{repeat, 1}], [roundtrip]},
+     {sched_utilization,[{repeat, 1}], [sched_utilization]},
      {throughput, [{repeat, 1}],
       [throughput_0,
        throughput_64,
@@ -69,7 +75,9 @@ groups() ->
 all_groups() ->
     [{group, setup},
      {group, roundtrip},
-     {group, throughput}].
+     {group, throughput},
+     {group, sched_utilization}
+    ].
 
 init_per_suite(Config) ->
     Digest = sha1,
@@ -160,6 +168,17 @@ end_per_suite(Config) ->
 
 init_per_group(ssl, Config) ->
     [{ssl_dist, true}, {ssl_dist_prefix, "SSL"}|Config];
+init_per_group(crypto, Config) ->
+    case inet_crypto_dist:is_supported() of
+        true ->
+            [{ssl_dist, false}, {ssl_dist_prefix, "Crypto"},
+             {ssl_dist_args,
+              "-proto_dist inet_crypto "
+              "-inet_crypto '#{secret => \"123456\"}'"}
+             |Config];
+        false ->
+            {skip, "Not supported on this OTP version"}
+    end;
 init_per_group(plain, Config) ->
     [{ssl_dist, false}, {ssl_dist_prefix, "Plain"}|Config];
 init_per_group(_GroupName, Config) ->
@@ -351,6 +370,120 @@ roundtrip_client(Pid, Mon, StartTime, N) ->
             roundtrip_client(Pid, Mon, StartTime, N - 1)
     end.
 
+%%---------------------------------------
+%% Scheduler utilization at constant load
+
+
+sched_utilization(Config) ->
+    run_nodepair_test(
+      fun(A, B, Prefix, HA, HB) ->
+              sched_utilization(A, B, Prefix, HA, HB, proplists:get_value(ssl_dist, Config))
+      end, Config).
+
+sched_utilization(A, B, Prefix, HA, HB, SSL) ->
+    [] = ssl_apply(HA, erlang, nodes, []),
+    [] = ssl_apply(HB, erlang, nodes, []),
+    {ClientMsacc, ServerMsacc, Msgs} =
+        ssl_apply(HA, fun () -> sched_util_runner(A, B, SSL) end),
+    [B] = ssl_apply(HA, erlang, nodes, []),
+    [A] = ssl_apply(HB, erlang, nodes, []),
+    msacc:print(ClientMsacc),
+    msacc:print(ServerMsacc),
+    ct:pal("Got ~p busy_dist_port msgs",[length(Msgs)]),
+    ct:log("Stats of B from A: ~p",
+           [ssl_apply(HA, net_kernel, node_info, [B])]),
+    ct:log("Stats of A from B: ~p",
+           [ssl_apply(HB, net_kernel, node_info, [A])]),
+    SchedUtilClient =
+        round(10000 * msacc:stats(system_runtime,ClientMsacc) /
+                  msacc:stats(system_realtime,ClientMsacc)),
+    SchedUtilServer =
+        round(10000 * msacc:stats(system_runtime,ServerMsacc) /
+                  msacc:stats(system_realtime,ServerMsacc)),
+    Verdict =
+        case Msgs of
+            [] ->
+                "";
+            _ ->
+                " ???"
+        end,
+    {comment, ClientComment} =
+        report(Prefix ++ " Sched Utilization Client" ++ Verdict,
+               SchedUtilClient, "/100 %" ++ Verdict),
+    {comment, ServerComment} =
+        report(Prefix++" Sched Utilization Server" ++ Verdict,
+               SchedUtilServer, "/100 %" ++ Verdict),
+    {comment, "Client " ++ ClientComment ++ ", Server " ++ ServerComment}.
+
+%% Runs on node A and spawns a server on node B
+%% We want to avoid getting busy_dist_port as it hides the true SU usage
+%% of the receiver and sender.
+sched_util_runner(A, B, true) ->
+    sched_util_runner(A, B, 250);
+sched_util_runner(A, B, false) ->
+    sched_util_runner(A, B, 250);
+sched_util_runner(A, B, Senders) ->
+    Payload = payload(5),
+    [A] = rpc:call(B, erlang, nodes, []),
+    ServerPids =
+        [erlang:spawn_link(
+           B, fun () -> throughput_server() end)
+         || _ <- lists:seq(1, Senders)],
+    ServerMsacc =
+        erlang:spawn(
+          B,
+          fun() ->
+                  receive
+                      {start,Pid} ->
+                          msacc:start(10000),
+                          receive
+                              {done,Pid} ->
+                                  Pid ! {self(),msacc:stats()}
+                          end
+                  end
+          end),
+    erlang:system_monitor(self(),[busy_dist_port]),
+    %% We spawn 250 senders which should mean that we
+    %% have a load of 250 msgs/msec
+    [spawn_link(
+       fun() ->
+               throughput_client(Pid, Payload)
+       end) || Pid <- ServerPids],
+    %%
+    receive after 1000 -> ok end,
+    ServerMsacc ! {start,self()},
+    msacc:start(10000),
+    ClientMsaccStats = msacc:stats(),
+    receive after 1000 -> ok end,
+    ServerMsacc ! {done,self()},
+    ServerMsaccStats = receive {ServerMsacc,Stats} -> Stats end,
+    %%
+    {ClientMsaccStats,ServerMsaccStats, flush()}.
+
+flush() ->
+    receive
+        M ->
+            [M | flush()]
+    after 0 ->
+            []
+    end.
+
+throughput_server() ->
+    receive _ -> ok end,
+    receive _ -> ok end,
+    receive _ -> ok end,
+    receive _ -> ok end,
+    receive _ -> ok end,
+    receive _ -> ok end,
+    receive _ -> ok end,
+    receive _ -> ok end,
+    receive _ -> ok end,
+    receive _ -> ok end,
+    throughput_server().
+
+throughput_client(Pid, Payload) ->
+    Pid ! Payload,
+    receive after 1 -> throughput_client(Pid, Payload) end.
 
 %%-----------------
 %% Throughput speed
@@ -407,37 +540,46 @@ throughput(A, B, Prefix, HA, HB, Packets, Size) ->
     [] = ssl_apply(HA, erlang, nodes, []),
     [] = ssl_apply(HB, erlang, nodes, []),
     #{time := Time,
-      dist_stats := DistStats,
+      client_dist_stats := ClientDistStats,
       client_msacc_stats := ClientMsaccStats,
       client_prof := ClientProf,
       server_msacc_stats := ServerMsaccStats,
-      server_prof := ServerProf} =
+      server_prof := ServerProf,
+      server_gc_before := Server_GC_Before,
+      server_gc_after := Server_GC_After} =
         ssl_apply(HA, fun () -> throughput_runner(A, B, Packets, Size) end),
     [B] = ssl_apply(HA, erlang, nodes, []),
     [A] = ssl_apply(HB, erlang, nodes, []),
     ClientMsaccStats =:= undefined orelse
         msacc:print(ClientMsaccStats),
-    io:format("DistStats: ~p~n", [DistStats]),
+    io:format("ClientDistStats: ~p~n", [ClientDistStats]),
     Overhead =
         50 % Distribution protocol headers (empirical) (TLS+=54)
         + byte_size(erlang:term_to_binary([0|<<>>])), % Benchmark overhead
     Bytes = Packets * (Size + Overhead),
     io:format("~w bytes, ~.4g s~n", [Bytes,Time/1000000]),
+    SizeString = integer_to_list(Size),
     ClientMsaccStats =:= undefined orelse
-        io:format(
-          "Sender core usage ratio: ~.4g ns/byte~n",
-          [msacc:stats(system_runtime, ClientMsaccStats)*1000/Bytes]),
+        report(
+          Prefix ++ " Sender_RelativeCoreLoad_" ++ SizeString,
+          round(msacc:stats(system_runtime, ClientMsaccStats)
+                * 1000000 / Bytes),
+          "ps/byte"),
     ServerMsaccStats =:= undefined orelse
         begin
-            io:format(
-              "Receiver core usage ratio: ~.4g ns/byte~n",
-              [msacc:stats(system_runtime, ServerMsaccStats)*1000/Bytes]),
+            report(
+              Prefix ++ " Receiver_RelativeCoreLoad_" ++ SizeString,
+              round(msacc:stats(system_runtime, ServerMsaccStats)
+                    * 1000000 / Bytes),
+              "ps/byte"),
             msacc:print(ServerMsaccStats)
         end,
     io:format("******* ClientProf:~n", []), prof_print(ClientProf),
     io:format("******* ServerProf:~n", []), prof_print(ServerProf),
+    io:format("******* Server GC Before:~n~p~n", [Server_GC_Before]),
+    io:format("******* Server GC After:~n~p~n", [Server_GC_After]),
     Speed = round((Bytes * 1000000) / (1024 * Time)),
-    report(Prefix++" Throughput_"++integer_to_list(Size), Speed, "kB/s").
+    report(Prefix ++ " Throughput_" ++ SizeString, Speed, "kB/s").
 
 %% Runs on node A and spawns a server on node B
 throughput_runner(A, B, Rounds, Size) ->
@@ -445,11 +587,12 @@ throughput_runner(A, B, Rounds, Size) ->
     [A] = rpc:call(B, erlang, nodes, []),
     ClientPid = self(),
     ServerPid =
-        erlang:spawn(
+        erlang:spawn_opt(
           B,
-          fun () -> throughput_server(ClientPid, Rounds) end),
+          fun () -> throughput_server(ClientPid, Rounds) end,
+          [{message_queue_data, off_heap}]),
     ServerMon = erlang:monitor(process, ServerPid),
-    msacc:available() andalso
+    msacc_available() andalso
         begin
             msacc:stop(),
             msacc:reset(),
@@ -457,11 +600,11 @@ throughput_runner(A, B, Rounds, Size) ->
             ok
         end,
     prof_start(),
-    {Time,ServerMsaccStats,ServerProf} =
+    #{time := Time} = Result =
         throughput_client(ServerPid, ServerMon, Payload, Rounds),
     prof_stop(),
-    ClientMsaccStats =
-        case msacc:available() of
+    MsaccStats =
+        case msacc_available() of
             true ->
                 MStats = msacc:stats(),
                 msacc:stop(),
@@ -469,15 +612,13 @@ throughput_runner(A, B, Rounds, Size) ->
             false ->
                 undefined
         end,
-    ClientProf = prof_end(),
+    Prof = prof_end(),
     [{_Node,Socket}] = dig_dist_node_sockets(),
     DistStats = inet:getstat(Socket),
-    #{time => microseconds(Time),
-      dist_stats => DistStats,
-      client_msacc_stats => ClientMsaccStats,
-      client_prof => ClientProf,
-      server_msacc_stats => ServerMsaccStats,
-      server_prof => ServerProf}.
+    Result#{time := microseconds(Time),
+            client_dist_stats => DistStats,
+            client_msacc_stats => MsaccStats,
+            client_prof => Prof}.
 
 dig_dist_node_sockets() ->
     [case DistCtrl of
@@ -500,7 +641,10 @@ dig_dist_node_sockets() ->
 
 
 throughput_server(Pid, N) ->
-    msacc:available() andalso
+    GC_Before = get_server_gc_info(),
+    %% dbg:tracer(port, dbg:trace_port(file, "throughput_server_gc.log")),
+    %% dbg:p(TLSDistReceiver, garbage_collection),
+    msacc_available() andalso
         begin
             msacc:stop(),
             msacc:reset(),
@@ -508,12 +652,12 @@ throughput_server(Pid, N) ->
             ok
         end,
     prof_start(),
-    throughput_server_loop(Pid, N).
+    throughput_server_loop(Pid, GC_Before, N).
 
-throughput_server_loop(_Pid, 0) ->
+throughput_server_loop(_Pid, GC_Before, 0) ->
     prof_stop(),
     MsaccStats =
-        case msacc:available() of
+        case msacc_available() of
             true ->
                 msacc:stop(),
                 MStats = msacc:stats(),
@@ -523,11 +667,31 @@ throughput_server_loop(_Pid, 0) ->
                 undefined
         end,
     Prof = prof_end(),
-    exit({ok,MsaccStats,Prof});
-throughput_server_loop(Pid, N) ->
+    %% dbg:flush_trace_port(),
+    exit(#{server_msacc_stats => MsaccStats,
+           server_prof => Prof,
+           server_gc_before => GC_Before,
+           server_gc_after => get_server_gc_info()});
+throughput_server_loop(Pid, GC_Before, N) ->
     receive
-        {Pid, N, _} ->
-            throughput_server_loop(Pid, N-1)
+        Msg ->
+            case Msg of
+                {Pid, N, _} ->
+                    throughput_server_loop(Pid, GC_Before, N - 1);
+                Other ->
+                    erlang:error({self(),?FUNCTION_NAME,Other})
+            end
+    end.
+
+get_server_gc_info() ->
+    case whereis(ssl_connection_sup_dist) of
+        undefined ->
+            undefined;
+        SupPid ->
+            [{_Id,TLSDistReceiver,_Type,_Modules}|_] =
+                supervisor:which_children(SupPid),
+            erlang:process_info(
+              TLSDistReceiver, [garbage_collection,garbage_collection_info])
     end.
 
 throughput_client(Pid, Mon, Payload, N) ->
@@ -535,8 +699,8 @@ throughput_client(Pid, Mon, Payload, N) ->
 
 throughput_client_loop(_Pid, Mon, _Payload, 0, StartTime) ->
     receive
-        {'DOWN', Mon, _, _, {ok,MsaccStats,Prof}} ->
-            {elapsed_time(StartTime),MsaccStats,Prof};
+        {'DOWN', Mon, _, _, #{} = Result} ->
+            Result#{time => elapsed_time(StartTime)};
         {'DOWN', Mon, _, _, Other} ->
             exit(Other)
     end;
@@ -554,6 +718,7 @@ prof_start() ->
     ok.
 -elif(?prof =:= eprof).
 prof_start() ->
+    catch eprof:stop(),
     {ok,_} = eprof:start(),
     profiling = eprof:start_profiling(processes()),
     ok.
@@ -655,7 +820,7 @@ get_node_args(Tag, Config) ->
         true ->
             proplists:get_value(Tag, Config);
         false ->
-            ""
+            proplists:get_value(ssl_dist_args, Config, "")
     end.
 
 
@@ -710,3 +875,6 @@ report(Name, Value, Unit) ->
 term_to_string(Term) ->
     unicode:characters_to_list(
       io_lib:write(Term, [{encoding, unicode}])).
+
+msacc_available() ->
+    msacc:available().
diff --git a/lib/ssl/test/ssl_dist_test_lib.erl b/lib/ssl/test/ssl_dist_test_lib.erl
index 1b9c853fc4..b8b805b2c4 100644
--- a/lib/ssl/test/ssl_dist_test_lib.erl
+++ b/lib/ssl/test/ssl_dist_test_lib.erl
@@ -144,6 +144,8 @@ mk_node_cmdline(ListenPort, Name, Args) ->
 	++ integer_to_list(ListenPort) ++ " "
 	++ Args ++ " "
 	++ "-env ERL_CRASH_DUMP " ++ Pwd ++ "/erl_crash_dump." ++ Name ++ " "
+        ++ "-kernel inet_dist_connect_options \"[{recbuf,12582912},{sndbuf,12582912},{high_watermark,8388608},{low_watermark,4194304}]\" "
+        ++ "-kernel inet_dist_listen_options \"[{recbuf,12582912},{sndbuf,12582912},{high_watermark,8388608},{low_watermark,4194304}]\" "
 	++ "-kernel error_logger \"{file,\\\"" ++ Pwd ++ "/error_log." ++ Name ++ "\\\"}\" "
 	++ "-setcookie " ++ atom_to_list(erlang:get_cookie()).
 
@@ -179,8 +181,9 @@ check_ssl_node_up(Socket, Name, Bin) ->
 		    Parent = self(),
 		    Go = make_ref(),
 		    %% Spawn connection handler on test server side
-		    Pid = spawn_link(
+		    Pid = spawn(
 			    fun () ->
+                                    link(group_leader()),
 				    receive Go -> ok end,
                                     process_flag(trap_exit, true),
 				    tstsrvr_con_loop(Name, Socket, Parent)
diff --git a/lib/ssl/test/ssl_eqc_SUITE.erl b/lib/ssl/test/ssl_eqc_SUITE.erl
new file mode 100644
index 0000000000..bd36d35c02
--- /dev/null
+++ b/lib/ssl/test/ssl_eqc_SUITE.erl
@@ -0,0 +1,58 @@
+%%
+%% %CopyrightBegin%
+%% 
+%% Copyright Ericsson AB 2015-2015. All Rights Reserved.
+%% 
+%% The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved online at http://www.erlang.org/.
+%% 
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%% 
+%% %CopyrightEnd%
+%%
+%%
+
+-module(ssl_eqc_SUITE).
+
+-compile(export_all).
+%%--------------------------------------------------------------------
+%% Common Test interface functions -----------------------------------
+%%--------------------------------------------------------------------
+
+all() -> 
+    [
+     tls_handshake_encoding
+    ].
+
+%%--------------------------------------------------------------------
+init_per_suite(Config) ->
+    ct_property_test:init_per_suite(Config).
+end_per_suite(Config) ->
+    Config.
+
+init_per_group(_GroupName, Config) ->
+    Config.
+
+end_per_group(_,Config) ->
+    Config.
+
+init_per_testcase(_, Config0) ->
+    Config0.
+
+end_per_testcase(_TestCase, Config) ->
+    Config.
+
+%%--------------------------------------------------------------------
+%% Test Cases --------------------------------------------------------
+%%--------------------------------------------------------------------
+
+tls_handshake_encoding(Config) when is_list(Config) ->
+    %% manual test:  proper:quickcheck(ssl_eqc_handshake:prop_tls_hs_encode_decode()).
+    true =  ct_property_test:quickcheck(ssl_eqc_handshake:prop_tls_hs_encode_decode(),
+                                        Config).
diff --git a/lib/ssl/test/ssl_handshake_SUITE.erl b/lib/ssl/test/ssl_handshake_SUITE.erl
index b8b9989d30..1b432970b6 100644
--- a/lib/ssl/test/ssl_handshake_SUITE.erl
+++ b/lib/ssl/test/ssl_handshake_SUITE.erl
@@ -25,6 +25,8 @@
 -compile(export_all).
 
 -include_lib("common_test/include/ct.hrl").
+-include("ssl_alert.hrl").
+-include("ssl_handshake.hrl").
 -include("ssl_internal.hrl").
 -include("tls_handshake.hrl").
 -include_lib("public_key/include/public_key.hrl").
@@ -41,7 +43,8 @@ all() -> [decode_hello_handshake,
 	  decode_empty_server_sni_correctly,
 	  select_proper_tls_1_2_rsa_default_hashsign,
 	  ignore_hassign_extension_pre_tls_1_2,
-          unorded_chain].
+	  unorded_chain, signature_algorithms,
+	  encode_decode_srp].
 
 %%--------------------------------------------------------------------
 init_per_suite(Config) ->
@@ -55,7 +58,9 @@ init_per_group(_GroupName, Config) ->
 end_per_group(_,Config) ->
     Config.
 
-init_per_testcase(ignore_hassign_extension_pre_tls_1_2, Config0) ->
+init_per_testcase(TC, Config0) when
+      TC =:= ignore_hassign_extension_pre_tls_1_2 orelse
+      TC =:= signature_algorithms ->
     catch crypto:stop(),
     try crypto:start() of
 	ok ->
@@ -104,15 +109,13 @@ decode_hello_handshake(_Config) ->
 							 #ssl_options{}),
 
     {Hello, _Data} = hd(Records),
-    #renegotiation_info{renegotiated_connection = <<0>>}
-	= (Hello#server_hello.extensions)#hello_extensions.renegotiation_info.
-
+    Extensions = Hello#server_hello.extensions,
+    #{renegotiation_info := #renegotiation_info{renegotiated_connection = <<0>>}} = Extensions.
 
 decode_single_hello_extension_correctly(_Config) -> 
     Renegotiation = <<?UINT16(?RENEGOTIATION_EXT), ?UINT16(1), 0>>,
-    Extensions = ssl_handshake:decode_hello_extensions(Renegotiation),
-    #renegotiation_info{renegotiated_connection = <<0>>}
-	= Extensions#hello_extensions.renegotiation_info.
+    Extensions = ssl_handshake:decode_extensions(Renegotiation, {3,3}, undefined),
+    #{renegotiation_info := #renegotiation_info{renegotiated_connection = <<0>>}} = Extensions.
 
 decode_supported_elliptic_curves_hello_extension_correctly(_Config) ->
     % List of supported and unsupported curves (RFC4492:S5.1.1)
@@ -123,37 +126,34 @@ decode_supported_elliptic_curves_hello_extension_correctly(_Config) ->
     Len = ListLen + 2,
     Extension = <<?UINT16(?ELLIPTIC_CURVES_EXT), ?UINT16(Len), ?UINT16(ListLen), EllipticCurveList/binary>>,
     % after decoding we should see only valid curves
-    #hello_extensions{elliptic_curves = DecodedCurves} = ssl_handshake:decode_hello_extensions(Extension),
-    #elliptic_curves{elliptic_curve_list = [?sect233k1, ?sect193r2]} = DecodedCurves.
+    Extensions = ssl_handshake:decode_hello_extensions(Extension, {3,2}, {3,2}, client),
+    #{elliptic_curves := #elliptic_curves{elliptic_curve_list = [?sect233k1, ?sect193r2]}} = Extensions. 
 
 decode_unknown_hello_extension_correctly(_Config) ->
     FourByteUnknown = <<16#CA,16#FE, ?UINT16(4), 3, 0, 1, 2>>,
     Renegotiation = <<?UINT16(?RENEGOTIATION_EXT), ?UINT16(1), 0>>,
-    Extensions = ssl_handshake:decode_hello_extensions(<<FourByteUnknown/binary, Renegotiation/binary>>),
-     #renegotiation_info{renegotiated_connection = <<0>>}
-	= Extensions#hello_extensions.renegotiation_info.
+    Extensions = ssl_handshake:decode_hello_extensions(<<FourByteUnknown/binary, Renegotiation/binary>>, {3,2}, {3,2}, client),
+    #{renegotiation_info := #renegotiation_info{renegotiated_connection = <<0>>}} = Extensions.
+
 
 encode_single_hello_sni_extension_correctly(_Config) ->
-    Exts = #hello_extensions{sni = #sni{hostname = "test.com"}},
     SNI = <<16#00, 16#00, 16#00, 16#0d, 16#00, 16#0b, 16#00, 16#00, 16#08,
 	    $t,    $e,    $s,    $t,    $.,    $c,    $o,    $m>>,
     ExtSize = byte_size(SNI),
     HelloExt = <<ExtSize:16/unsigned-big-integer, SNI/binary>>,
-    Encoded = ssl_handshake:encode_hello_extensions(Exts),
+    Encoded = ssl_handshake:encode_extensions([#sni{hostname = "test.com"}]),
     HelloExt = Encoded.
 
 decode_single_hello_sni_extension_correctly(_Config) ->
-    Exts = #hello_extensions{sni = #sni{hostname = "test.com"}},
     SNI = <<16#00, 16#00, 16#00, 16#0d, 16#00, 16#0b, 16#00, 16#00, 16#08,
 	    $t,    $e,    $s,    $t,    $.,    $c,    $o,    $m>>,
-    Decoded = ssl_handshake:decode_hello_extensions(SNI),
-    Exts = Decoded.
+    Decoded = ssl_handshake:decode_hello_extensions(SNI, {3,3}, {3,3}, client),
+    #{sni := #sni{hostname = "test.com"}} = Decoded.
 
 decode_empty_server_sni_correctly(_Config) ->
-    Exts = #hello_extensions{sni = #sni{hostname = ""}},
     SNI = <<?UINT16(?SNI_EXT),?UINT16(0)>>,
-    Decoded = ssl_handshake:decode_hello_extensions(SNI),
-    Exts = Decoded.
+    Decoded = ssl_handshake:decode_hello_extensions(SNI, {3,3}, {3,3}, server),
+    #{sni := #sni{hostname = ""}} = Decoded.
 
 
 select_proper_tls_1_2_rsa_default_hashsign(_Config) ->
@@ -168,11 +168,11 @@ ignore_hassign_extension_pre_tls_1_2(Config) ->
     Opts = proplists:get_value(server_opts, Config),
     CertFile = proplists:get_value(certfile, Opts),
     [{_, Cert, _}] = ssl_test_lib:pem_to_der(CertFile),
-    HashSigns = #hash_sign_algos{hash_sign_algos = [{sha512, rsa}, {sha, dsa}]},
-    {sha512, rsa} = ssl_handshake:select_hashsign(HashSigns, Cert, ecdhe_rsa, tls_v1:default_signature_algs({3,3}), {3,3}),
+    HashSigns = #hash_sign_algos{hash_sign_algos = [{sha512, rsa}, {sha, dsa}, {sha, rsa}]},
+    {sha512, rsa} = ssl_handshake:select_hashsign({HashSigns, undefined}, Cert, ecdhe_rsa, tls_v1:default_signature_algs({3,3}), {3,3}),
     %%% Ignore
-    {md5sha, rsa} = ssl_handshake:select_hashsign(HashSigns, Cert, ecdhe_rsa, tls_v1:default_signature_algs({3,2}), {3,2}),
-    {md5sha, rsa} = ssl_handshake:select_hashsign(HashSigns, Cert, ecdhe_rsa, tls_v1:default_signature_algs({3,0}), {3,0}).
+    {md5sha, rsa} = ssl_handshake:select_hashsign({HashSigns, undefined}, Cert, ecdhe_rsa, tls_v1:default_signature_algs({3,2}), {3,2}),
+    {md5sha, rsa} = ssl_handshake:select_hashsign({HashSigns, undefined}, Cert, ecdhe_rsa, tls_v1:default_signature_algs({3,0}), {3,0}).
 
 unorded_chain(Config) when is_list(Config) ->
     DefConf = ssl_test_lib:default_cert_chain_conf(),
@@ -192,6 +192,79 @@ unorded_chain(Config) when is_list(Config) ->
     {ok, _, OrderedChain} = 
         ssl_certificate:certificate_chain(PeerCert, ets:new(foo, []), ExtractedCerts, UnordedChain).
 
+encode_decode_srp(_Config) ->
+    Exts = #{srp => #srp{username = <<"foo">>},
+             sni => #sni{hostname = "bar"},
+             renegotiation_info => undefined,
+             signature_algs => undefined,
+             alpn => undefined,
+             next_protocol_negotiation => undefined,
+             ec_point_formats => undefined,
+             elliptic_curves => undefined
+            },
+    EncodedExts0 = <<0,20,          % Length
+                    0,12,          % SRP extension
+                    0,4,           % Length
+                    3,             % srp_I length
+                    102,111,111, % username = "foo"
+                    0,0,           % SNI extension
+                    0,8,           % Length
+                    0,6,           % ServerNameLength
+                    0,             % NameType (host_name)
+                    0,3,           % HostNameLength
+                    98,97,114>>,     % hostname = "bar"
+    EncodedExts0 = <<?UINT16(_),EncodedExts/binary>> =
+        ssl_handshake:encode_hello_extensions(Exts),
+    Exts = ssl_handshake:decode_hello_extensions(EncodedExts, {3,3}, {3,3}, client).
+
+signature_algorithms(Config) ->
+    Opts = proplists:get_value(server_opts, Config),
+    CertFile = proplists:get_value(certfile, Opts),
+    io:format("Cert = ~p~n", [CertFile]),
+    [{_, Cert, _}] = ssl_test_lib:pem_to_der(CertFile),
+    HashSigns0 = #hash_sign_algos{
+                   hash_sign_algos = [{sha512, rsa},
+                                      {sha, dsa},
+                                      {sha, rsa}]},
+    Schemes0 = #signature_algorithms_cert{
+                 signature_scheme_list = [rsa_pkcs1_sha1,
+                                          ecdsa_sha1]},
+    {sha512, rsa} = ssl_handshake:select_hashsign(
+                      {HashSigns0, Schemes0},
+                      Cert, ecdhe_rsa,
+                      tls_v1:default_signature_algs({3,3}),
+                      {3,3}),
+    HashSigns1 = #hash_sign_algos{
+                    hash_sign_algos = [{sha, dsa},
+                                      {sha, rsa}]},
+    {sha, rsa} = ssl_handshake:select_hashsign(
+                      {HashSigns1, Schemes0},
+                      Cert, ecdhe_rsa,
+                      tls_v1:default_signature_algs({3,3}),
+                   {3,3}),
+    Schemes1 = #signature_algorithms_cert{
+                  signature_scheme_list = [rsa_pkcs1_sha256,
+                                           ecdsa_sha1]},
+    %% Signature not supported
+    #alert{} = ssl_handshake:select_hashsign(
+                 {HashSigns1, Schemes1},
+                 Cert, ecdhe_rsa,
+                 tls_v1:default_signature_algs({3,3}),
+                 {3,3}),
+    %% No scheme, hashsign is used
+    {sha, rsa} = ssl_handshake:select_hashsign(
+                   {HashSigns1, undefined},
+                   Cert, ecdhe_rsa,
+                   tls_v1:default_signature_algs({3,3}),
+                   {3,3}),
+    HashSigns2 = #hash_sign_algos{
+                    hash_sign_algos = [{sha, dsa}]},
+    %% Signature not supported
+    #alert{} = ssl_handshake:select_hashsign(
+                 {HashSigns2, Schemes1},
+                 Cert, ecdhe_rsa,
+                 tls_v1:default_signature_algs({3,3}),
+                 {3,3}).
 
 %%--------------------------------------------------------------------
 %% Internal functions ------------------------------------------------
diff --git a/lib/ssl/test/ssl_npn_handshake_SUITE.erl b/lib/ssl/test/ssl_npn_handshake_SUITE.erl
index 1c7d6b5f9f..878e983bb9 100644
--- a/lib/ssl/test/ssl_npn_handshake_SUITE.erl
+++ b/lib/ssl/test/ssl_npn_handshake_SUITE.erl
@@ -64,13 +64,12 @@ next_protocol_not_supported() ->
      npn_not_supported_server
     ].
 
-init_per_suite(Config) ->
+init_per_suite(Config0) ->
     catch crypto:stop(),
     try crypto:start() of
 	ok ->
 	    ssl_test_lib:clean_start(),
-	    {ok, _} = make_certs:all(proplists:get_value(data_dir, Config),
-				      proplists:get_value(priv_dir, Config)),
+	    Config = ssl_test_lib:make_rsa_cert(Config0),
 	    ssl_test_lib:cert_options(Config)
     catch _:_ ->
 	    {skip, "Crypto did not start"}
@@ -196,10 +195,10 @@ client_negotiate_server_does_not_support(Config) when is_list(Config) ->
 renegotiate_from_client_after_npn_handshake(Config) when is_list(Config) ->
     Data = "hello world",
     
-    ClientOpts0 = ssl_test_lib:ssl_options(client_opts, Config),
+    ClientOpts0 = ssl_test_lib:ssl_options(client_rsa_verify_opts, Config),
     ClientOpts = [{client_preferred_next_protocols,
 		   {client, [<<"http/1.0">>], <<"http/1.1">>}}] ++ ClientOpts0,
-    ServerOpts0 = ssl_test_lib:ssl_options(server_opts, Config),
+    ServerOpts0 = ssl_test_lib:ssl_options(server_rsa_opts, Config),
     ServerOpts = [{next_protocols_advertised,
 		   [<<"spdy/2">>, <<"http/1.1">>, <<"http/1.0">>]}] ++  ServerOpts0,
     ExpectedProtocol = {ok, <<"http/1.0">>},
@@ -221,7 +220,7 @@ renegotiate_from_client_after_npn_handshake(Config) when is_list(Config) ->
 
 %--------------------------------------------------------------------------------
 npn_not_supported_client(Config) when is_list(Config) ->
-    ClientOpts0 = ssl_test_lib:ssl_options(client_opts, Config),
+    ClientOpts0 = ssl_test_lib:ssl_options(client_rsa_verify_opts, Config),
     PrefProtocols = {client_preferred_next_protocols,
 		     {client, [<<"http/1.0">>], <<"http/1.1">>}},
     ClientOpts = [PrefProtocols] ++ ClientOpts0,
@@ -236,7 +235,7 @@ npn_not_supported_client(Config) when is_list(Config) ->
 
 %--------------------------------------------------------------------------------
 npn_not_supported_server(Config) when is_list(Config)->
-    ServerOpts0 = ssl_test_lib:ssl_options(server_opts, Config),
+    ServerOpts0 = ssl_test_lib:ssl_options(server_rsa_opts, Config),
     AdvProtocols = {next_protocols_advertised, [<<"spdy/2">>, <<"http/1.1">>, <<"http/1.0">>]},
     ServerOpts = [AdvProtocols] ++  ServerOpts0,
   
@@ -244,63 +243,24 @@ npn_not_supported_server(Config) when is_list(Config)->
 
 %--------------------------------------------------------------------------------
 npn_handshake_session_reused(Config) when  is_list(Config)->
-    ClientOpts0 = ssl_test_lib:ssl_options(client_opts, Config),
+    ClientOpts0 = ssl_test_lib:ssl_options(client_rsa_verify_opts, Config),
     ClientOpts = [{client_preferred_next_protocols,
 		   {client, [<<"http/1.0">>], <<"http/1.1">>}}] ++ ClientOpts0,
-    ServerOpts0 = ssl_test_lib:ssl_options(server_opts, Config),
+    ServerOpts0 = ssl_test_lib:ssl_options(server_rsa_opts, Config),
     ServerOpts =[{next_protocols_advertised,
 		   [<<"spdy/2">>, <<"http/1.1">>, <<"http/1.0">>]}]  ++ ServerOpts0,
 
-    {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
-    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0},
-                    {from, self()},
-                    {mfa, {ssl_test_lib, session_info_result, []}},
-					{options, ServerOpts}]),
-
-    Port = ssl_test_lib:inet_port(Server),
-    Client = ssl_test_lib:start_client([{node, ClientNode}, {port, Port},
-               {host, Hostname},
-               {from, self()},
-               {mfa, {ssl_test_lib, no_result_msg, []}},
-               {options, ClientOpts}]),
-
-    SessionInfo = 
-	receive
-	    {Server, Info} ->
-		Info
-	end,
-        
-    Server ! {listen, {mfa, {ssl_test_lib, no_result, []}}},
-    
-    %% Make sure session is registered
-    ct:sleep(?SLEEP),
-
-    Client1 =
-	ssl_test_lib:start_client([{node, ClientNode},
-				   {port, Port}, {host, Hostname},
-				   {mfa, {ssl_test_lib, session_info_result, []}},
-				   {from, self()},  {options, ClientOpts}]),
-
-      receive
-	{Client1, SessionInfo} ->
-	    ok;
-	{Client1, Other} ->
-	    ct:fail(Other)
-      end,
+    ssl_test_lib:reuse_session(ClientOpts, ServerOpts, Config).
     
-    ssl_test_lib:close(Server), 
-    ssl_test_lib:close(Client),
-    ssl_test_lib:close(Client1).
-
 %%--------------------------------------------------------------------
 %% Internal functions ------------------------------------------------
 %%--------------------------------------------------------------------
 run_npn_handshake(Config, ClientExtraOpts, ServerExtraOpts, ExpectedProtocol) ->
     Data = "hello world",
 
-    ClientOpts0 = ssl_test_lib:ssl_options(client_opts, Config),
+    ClientOpts0 = ssl_test_lib:ssl_options(client_rsa_verify_opts, Config),
     ClientOpts = ClientExtraOpts ++ ClientOpts0,
-    ServerOpts0 = ssl_test_lib:ssl_options(server_opts, Config),
+    ServerOpts0 = ssl_test_lib:ssl_options(server_rsa_opts, Config),
     ServerOpts = ServerExtraOpts ++  ServerOpts0,
 
     {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
diff --git a/lib/ssl/test/ssl_npn_hello_SUITE.erl b/lib/ssl/test/ssl_npn_hello_SUITE.erl
index 35af666e9e..46734ba180 100644
--- a/lib/ssl/test/ssl_npn_hello_SUITE.erl
+++ b/lib/ssl/test/ssl_npn_hello_SUITE.erl
@@ -71,44 +71,46 @@ encode_and_decode_client_hello_test(Config) ->
     Version = ssl_test_lib:protocol_version(Config),
     {[{DecodedHandshakeMessage, _Raw}], _} =
 	tls_handshake:get_tls_handshake(Version, list_to_binary(HandShakeData), <<>>, #ssl_options{}),
-    NextProtocolNegotiation = (DecodedHandshakeMessage#client_hello.extensions)#hello_extensions.next_protocol_negotiation,
-    NextProtocolNegotiation = undefined.
+    Extensions = DecodedHandshakeMessage#client_hello.extensions,
+    #{next_protocol_negotiation := undefined} = Extensions.
 %%--------------------------------------------------------------------
 encode_and_decode_npn_client_hello_test(Config) ->
     HandShakeData = create_client_handshake(#next_protocol_negotiation{extension_data = <<>>}),
     Version = ssl_test_lib:protocol_version(Config),
     {[{DecodedHandshakeMessage, _Raw}], _} =
 	tls_handshake:get_tls_handshake(Version, list_to_binary(HandShakeData), <<>>,  #ssl_options{}),
-    NextProtocolNegotiation = (DecodedHandshakeMessage#client_hello.extensions)#hello_extensions.next_protocol_negotiation,
-    NextProtocolNegotiation = #next_protocol_negotiation{extension_data = <<>>}.
+    Extensions = DecodedHandshakeMessage#client_hello.extensions,
+    #{next_protocol_negotiation := #next_protocol_negotiation{extension_data = <<>>}} = Extensions.
 %%--------------------------------------------------------------------
 encode_and_decode_server_hello_test(Config) ->
     HandShakeData = create_server_handshake(undefined),
     Version = ssl_test_lib:protocol_version(Config),
     {[{DecodedHandshakeMessage, _Raw}], _} =
 	tls_handshake:get_tls_handshake(Version, list_to_binary(HandShakeData), <<>>, #ssl_options{}),
-    NextProtocolNegotiation = (DecodedHandshakeMessage#server_hello.extensions)#hello_extensions.next_protocol_negotiation,
-    NextProtocolNegotiation = undefined.
+    Extensions = DecodedHandshakeMessage#server_hello.extensions,
+    #{next_protocol_negotiation := undefined} = Extensions.
+
 %%--------------------------------------------------------------------
 encode_and_decode_npn_server_hello_test(Config) ->
     HandShakeData = create_server_handshake(#next_protocol_negotiation{extension_data = <<6, "spdy/2">>}),
     Version = ssl_test_lib:protocol_version(Config),
     {[{DecodedHandshakeMessage, _Raw}], _} =
 	tls_handshake:get_tls_handshake(Version, list_to_binary(HandShakeData), <<>>,  #ssl_options{}),
-    NextProtocolNegotiation = (DecodedHandshakeMessage#server_hello.extensions)#hello_extensions.next_protocol_negotiation,
-    ct:log("~p ~n", [NextProtocolNegotiation]),
-    NextProtocolNegotiation = #next_protocol_negotiation{extension_data = <<6, "spdy/2">>}.
+    Extensions = DecodedHandshakeMessage#server_hello.extensions, 
+    ct:log("~p ~n", [Extensions]),
+    #{next_protocol_negotiation := #next_protocol_negotiation{extension_data = <<6, "spdy/2">>}} = Extensions.
 
 %%--------------------------------------------------------------------
 create_server_hello_with_no_advertised_protocols_test(_Config) ->
-    Hello = ssl_handshake:server_hello(<<>>, {3, 0}, create_connection_states(), #hello_extensions{}),
-    undefined = (Hello#server_hello.extensions)#hello_extensions.next_protocol_negotiation.
+    Hello = ssl_handshake:server_hello(<<>>, {3, 0}, create_connection_states(), #{}),
+    Extensions = Hello#server_hello.extensions,
+    #{} = Extensions.
 %%--------------------------------------------------------------------
 create_server_hello_with_advertised_protocols_test(_Config) ->
     Hello = ssl_handshake:server_hello(<<>>, {3, 0}, create_connection_states(),
-				       #hello_extensions{next_protocol_negotiation = [<<"spdy/1">>, <<"http/1.0">>, <<"http/1.1">>]}),
-    [<<"spdy/1">>, <<"http/1.0">>, <<"http/1.1">>] =
-	(Hello#server_hello.extensions)#hello_extensions.next_protocol_negotiation.
+				       #{next_protocol_negotiation => [<<"spdy/1">>, <<"http/1.0">>, <<"http/1.1">>]}),
+    Extensions = Hello#server_hello.extensions,
+    #{next_protocol_negotiation := [<<"spdy/1">>, <<"http/1.0">>, <<"http/1.1">>]} = Extensions.
 %%--------------------------------------------------------------------
 %% Internal functions ------------------------------------------------
 %%--------------------------------------------------------------------
@@ -120,9 +122,8 @@ create_client_handshake(Npn) ->
 				      session_id = <<>>,
 				      cipher_suites = [?TLS_DHE_DSS_WITH_DES_CBC_SHA],
 				      compression_methods = "",
-				      extensions = #hello_extensions{
-						      next_protocol_negotiation = Npn,
-						      renegotiation_info = #renegotiation_info{}}
+				      extensions = #{next_protocol_negotiation => Npn,
+						      renegotiation_info => #renegotiation_info{}}
 				     }, Vsn).
 
 create_server_handshake(Npn) ->
@@ -133,9 +134,8 @@ create_server_handshake(Npn) ->
 				      session_id = <<>>,
 				      cipher_suite = ?TLS_DHE_DSS_WITH_DES_CBC_SHA,
 				      compression_method = 1,
-				      extensions = #hello_extensions{
-						      next_protocol_negotiation = Npn,
-						      renegotiation_info = #renegotiation_info{}}
+				      extensions = #{next_protocol_negotiation => Npn,
+                                                     renegotiation_info => #renegotiation_info{}}
 				     }, Vsn).
 
 create_connection_states() ->
@@ -146,5 +146,5 @@ create_connection_states() ->
 						 }
 		       },
       current_read => #{secure_renegotiation => false
-       }
+                       }
      }.
diff --git a/lib/ssl/test/ssl_packet_SUITE.erl b/lib/ssl/test/ssl_packet_SUITE.erl
index 9af1ae0e3f..6d26b2df33 100644
--- a/lib/ssl/test/ssl_packet_SUITE.erl
+++ b/lib/ssl/test/ssl_packet_SUITE.erl
@@ -2122,26 +2122,13 @@ active_once_packet(Socket, Data, N) ->
     active_once_packet(Socket, Data, N-1).
 
 active_raw(Socket, Data, N) ->
-    active_raw(Socket, Data, N, []).
-
-active_raw(_Socket, _, 0, _) ->
+    active_raw(Socket, (length(Data) * N)).
+active_raw(_Socket, 0) ->
     ok;
-active_raw(Socket, Data, N, Acc) ->
+active_raw(Socket, N) ->
     receive 
-	{ssl, Socket, Byte} when length(Byte) == 1 ->
-	    receive
-		{ssl, Socket, _} ->
-		    active_raw(Socket, Data, N -1)
-	    end;
-	{ssl, Socket, Data} ->
-	    active_raw(Socket, Data, N-1, []);
-	{ssl, Socket, Other} ->
-	    case Acc ++ Other of
-		Data ->
-		    active_raw(Socket, Data, N-1, []);
-		NewAcc ->
-		    active_raw(Socket, Data, NewAcc)
-	    end
+	{ssl, Socket, Bytes} ->
+            active_raw(Socket, N-length(Bytes))
     end.
 
 active_packet(Socket, _, 0) ->
diff --git a/lib/ssl/test/ssl_payload_SUITE.erl b/lib/ssl/test/ssl_payload_SUITE.erl
index 1f9b6a5772..27b9c258a0 100644
--- a/lib/ssl/test/ssl_payload_SUITE.erl
+++ b/lib/ssl/test/ssl_payload_SUITE.erl
@@ -64,7 +64,8 @@ payload_tests() ->
      server_echos_active_huge,
      client_echos_passive_huge,
      client_echos_active_once_huge,
-     client_echos_active_huge].
+     client_echos_active_huge,
+     client_active_once_server_close].
 
 init_per_suite(Config) ->
     catch crypto:stop(),
@@ -397,6 +398,23 @@ client_echos_active_huge(Config) when is_list(Config) ->
     client_echos_active(
       Data, ClientOpts, ServerOpts, ClientNode, ServerNode, Hostname).
  
+
+%%--------------------------------------------------------------------
+client_active_once_server_close() ->
+    [{doc, "Server sends 500000 bytes and immediately after closes the connection"
+     "Make sure client recives all data if possible"}].
+
+client_active_once_server_close(Config) when is_list(Config) -> 
+    ClientOpts = ssl_test_lib:ssl_options(client_opts, Config),
+    ServerOpts = ssl_test_lib:ssl_options(server_opts, Config),
+    {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
+    %%
+    Data = binary:copy(<<"1234567890">>, 50000),
+    client_active_once_server_close(
+      Data, ClientOpts, ServerOpts, ClientNode, ServerNode, Hostname).
+ 
+
+
 %%--------------------------------------------------------------------
 %% Internal functions ------------------------------------------------
 %%--------------------------------------------------------------------
@@ -541,42 +559,57 @@ client_echos_active(
     ssl_test_lib:close(Server),
     ssl_test_lib:close(Client).
 
+client_active_once_server_close(
+  Data, ClientOpts, ServerOpts, ClientNode, ServerNode, Hostname) ->
+    Length = byte_size(Data),
+    Server =
+        ssl_test_lib:start_server(
+          [{node, ServerNode}, {port, 0},
+           {from, self()},
+           {mfa, {?MODULE, send_close, [Data]}},
+           {options, [{active, once}, {mode, binary} | ServerOpts]}]),
+    Port = ssl_test_lib:inet_port(Server),
+    Client =
+        ssl_test_lib:start_client(
+          [{node, ClientNode}, {port, Port},
+           {host, Hostname},
+           {from, self()},
+           {mfa, {ssl_test_lib, active_once_recv, [Length]}},
+           {options,[{active, once}, {mode, binary} | ClientOpts]}]),
+    %%
+    ssl_test_lib:check_result(Server, ok, Client, ok).
+
+send(_Socket, _Data, 0, _) ->
+    ok;
+send(Socket, Data, Count, RecvEcho) ->
+    ok = ssl:send(Socket, Data),
+    RecvEcho(),
+    send(Socket, Data, Count - 1, RecvEcho).
 
-send(Socket, Data, Count, Verify) ->
-    send(Socket, Data, Count, <<>>, Verify).
-%%
-send(_Socket, _Data, 0, Acc, _Verify) ->
-    Acc;
-send(Socket, Data, Count, Acc, Verify) ->
+send_close(Socket, Data) ->
     ok = ssl:send(Socket, Data),
-    NewAcc = Verify(Acc),
-    send(Socket, Data, Count - 1, NewAcc, Verify).
+    ssl:close(Socket).
 
- 
 sender(Socket, Data) ->
     ct:log("Sender recv: ~p~n", [ssl:getopts(Socket, [active])]),
-    <<>> =
-        send(
-          Socket, Data, 100,
-          fun(Acc) -> verify_recv(Socket, Data, Acc) end),
-    ok.
+    send(Socket, Data, 100,
+              fun() -> 
+                      ssl_test_lib:recv_disregard(Socket, byte_size(Data)) 
+              end).
 
 sender_active_once(Socket, Data) ->
     ct:log("Sender active once: ~p~n", [ssl:getopts(Socket, [active])]),
-    <<>> =
-        send(
-          Socket, Data, 100,
-          fun(Acc) -> verify_active_once(Socket, Data, Acc) end),
-    ok.
+    send(Socket, Data, 100,
+         fun() -> 
+                 ssl_test_lib:active_once_disregard(Socket, byte_size(Data)) 
+         end).
 
 sender_active(Socket, Data) ->
     ct:log("Sender active: ~p~n", [ssl:getopts(Socket, [active])]),
-    <<>> =
-        send(
-          Socket, Data, 100,
-          fun(Acc) -> verify_active(Socket, Data, Acc) end),
-    ok.
-
+    send(Socket, Data, 100,
+         fun() -> 
+                 ssl_test_lib:active_disregard(Socket, byte_size(Data)) 
+         end).
 
 echoer(Socket, Size) ->
     ct:log("Echoer recv: ~p~n", [ssl:getopts(Socket, [active])]),
@@ -592,99 +625,32 @@ echoer_active(Socket, Size) ->
 
 
 %% Receive Size bytes
+echo_recv(_Socket, 0) ->
+    ok;
 echo_recv(Socket, Size) ->
     {ok, Data} = ssl:recv(Socket, 0),
     ok = ssl:send(Socket, Data),
-    NewSize = Size - byte_size(Data),
-    if
-        0 < NewSize ->
-            echo_recv(Socket, NewSize);
-        0 == NewSize ->
-            ok
-    end.
-
-%% Verify that received data is SentData, return any superflous data
-verify_recv(Socket, SentData, Acc) ->
-    {ok, NewData} = ssl:recv(Socket, 0),
-    SentSize = byte_size(SentData),
-    NewAcc = <<Acc/binary, NewData/binary>>,
-    NewSize = byte_size(NewAcc),
-    if
-        SentSize < NewSize ->
-            {SentData,Rest} = split_binary(NewAcc, SentSize),
-            Rest;
-        NewSize < SentSize ->
-            verify_recv(Socket, SentData, NewAcc);
-        true ->
-            SentData = NewAcc,
-            <<>>
-    end.
+    echo_recv(Socket, Size - byte_size(Data)).
 
 %% Receive Size bytes
+echo_active_once(_Socket, 0) ->
+    ok;
 echo_active_once(Socket, Size) ->
     receive
         {ssl, Socket, Data} ->
             ok = ssl:send(Socket, Data),
             NewSize = Size - byte_size(Data),
             ssl:setopts(Socket, [{active, once}]),
-            if
-                0 < NewSize ->
-                    echo_active_once(Socket, NewSize);
-                0 == NewSize ->
-                    ok
-            end
+            echo_active_once(Socket, NewSize)
     end.
 
-%% Verify that received data is SentData, return any superflous data
-verify_active_once(Socket, SentData, Acc) ->
-    receive
-        {ssl, Socket, Data} ->
-            SentSize = byte_size(SentData),
-            NewAcc = <<Acc/binary, Data/binary>>,
-            NewSize = byte_size(NewAcc),
-            ssl:setopts(Socket, [{active, once}]),
-            if
-                SentSize < NewSize ->
-                    {SentData,Rest} = split_binary(NewAcc, SentSize),
-                    Rest;
-                NewSize < SentSize ->
-                    verify_active_once(Socket, SentData, NewAcc);
-                true ->
-                    SentData = NewAcc,
-                    <<>>
-            end
-    end.
-
-
 %% Receive Size bytes
+echo_active(_Socket, 0) ->
+    ok;
 echo_active(Socket, Size) ->
     receive
         {ssl, Socket, Data} ->
             ok = ssl:send(Socket, Data),
-            NewSize = Size - byte_size(Data),
-            if
-                0 < NewSize ->
-                    echo_active(Socket, NewSize);
-                0 == NewSize ->
-                    ok
-            end
-    end.
-
-%% Verify that received data is SentData, return any superflous data
-verify_active(Socket, SentData, Acc) ->
-    receive
-        {ssl, Socket, Data} ->
-            SentSize = byte_size(SentData),
-            NewAcc = <<Acc/binary, Data/binary>>,
-            NewSize = byte_size(NewAcc),
-            if
-                SentSize < NewSize ->
-                    {SentData,Rest} = split_binary(NewAcc, SentSize),
-                    Rest;
-                NewSize < SentSize ->
-                    verify_active(Socket, SentData, NewAcc);
-                true ->
-                    SentData = NewAcc,
-                    <<>>
-            end
-    end.
+            echo_active(Socket, Size - byte_size(Data))
+    end.    
+        
diff --git a/lib/ssl/test/ssl_pem_cache_SUITE.erl b/lib/ssl/test/ssl_pem_cache_SUITE.erl
index 25d2cb300d..6f11e2bbe8 100644
--- a/lib/ssl/test/ssl_pem_cache_SUITE.erl
+++ b/lib/ssl/test/ssl_pem_cache_SUITE.erl
@@ -44,11 +44,8 @@ init_per_suite(Config0) ->
     try crypto:start() of
 	ok ->
 	    ssl_test_lib:clean_start(),
-	    %% make rsa certs using oppenssl
-	    {ok, _} =  make_certs:all(proplists:get_value(data_dir, Config0),
-				      proplists:get_value(priv_dir, Config0)),
-	    Config1 = ssl_test_lib:make_dsa_cert(Config0),
-	    ssl_test_lib:cert_options(Config1)
+	    %% make rsa certs  
+            ssl_test_lib:make_rsa_cert(Config0)
     catch _:_ ->
 	    {skip, "Crypto did not start"}
     end.
@@ -86,8 +83,8 @@ pem_cleanup() ->
     [{doc, "Test pem cache invalidate mechanism"}].
 pem_cleanup(Config)when is_list(Config) ->
     process_flag(trap_exit, true),
-    ClientOpts = proplists:get_value(client_verification_opts, Config),
-    ServerOpts = proplists:get_value(server_verification_opts, Config),
+    ClientOpts = proplists:get_value(client_rsa_verify_opts, Config),
+    ServerOpts = proplists:get_value(server_rsa_verify_opts, Config),
     {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
 
     Server =
@@ -118,8 +115,8 @@ invalid_insert() ->
 invalid_insert(Config)when is_list(Config) ->      
     process_flag(trap_exit, true),
     
-    ClientOpts = proplists:get_value(client_verification_opts, Config),
-    ServerOpts = proplists:get_value(server_verification_opts, Config),
+    ClientOpts = proplists:get_value(client_rsa_verify_opts, Config),
+    ServerOpts = proplists:get_value(server_rsa_verify_opts, Config),
     {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
     BadClientOpts = [{cacertfile, "tmp/does_not_exist.pem"} | proplists:delete(cacertfile, ClientOpts)],
     Server =
diff --git a/lib/ssl/test/ssl_rfc_5869_SUITE.erl b/lib/ssl/test/ssl_rfc_5869_SUITE.erl
new file mode 100644
index 0000000000..8b2d1c2082
--- /dev/null
+++ b/lib/ssl/test/ssl_rfc_5869_SUITE.erl
@@ -0,0 +1,316 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2018-2018. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+%%
+-module(ssl_rfc_5869_SUITE).
+
+%% Note: This directive should only be used in test suites.
+-compile(export_all).
+
+-include_lib("common_test/include/ct.hrl").
+
+%%--------------------------------------------------------------------
+%% Common Test interface functions -----------------------------------
+%%--------------------------------------------------------------------
+all() -> 
+    [sha_256_basic,
+     sha_256_long,
+     sha_256_no_salt,
+     sha_basic,
+     sha_long,
+     sha_no_salt,
+     sha_default_salt
+    ].
+
+%%--------------------------------------------------------------------
+init_per_suite(Config) ->
+    catch crypto:stop(),
+    try crypto:start() of
+	ok ->
+            Config
+    catch _:_ ->
+	    {skip, "Crypto did not start"}
+    end.
+
+end_per_suite(_Config) ->
+    application:stop(crypto).
+
+%%--------------------------------------------------------------------
+init_per_testcase(_TestCase, Config) ->
+    ct:timetrap({seconds, 5}),
+    Config.
+
+end_per_testcase(_TestCase, Config) ->
+    Config.
+
+%%--------------------------------------------------------------------
+%% Test Cases --------------------------------------------------------
+%%--------------------------------------------------------------------
+  
+sha_256_basic() ->
+    [{doc, "Basic test case with SHA-256"}].
+sha_256_basic(Config) when is_list(Config) ->
+    %% Hash = SHA-256
+    %% IKM  = 0x0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b (22 octets)
+    %% salt = 0x000102030405060708090a0b0c (13 octets)
+    %% info = 0xf0f1f2f3f4f5f6f7f8f9 (10 octets)
+    %% L    = 42
+    %% PRK  = 0x077709362c2e32df0ddc3f0dc47bba63
+    %%        90b6c73bb50f9c3122ec844ad7c2b3e5 (32 octets)
+    %% OKM  = 0x3cb25f25faacd57a90434f64d0362f2a
+    %%        2d2d0a90cf1a5a4c5db02d56ecc4c5bf
+    %%        34007208d5b887185865 (42 octets)
+    IKM  = hexstr2bin("0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b"),
+    Salt = hexstr2bin("000102030405060708090a0b0c"),
+    Info = hexstr2bin("f0f1f2f3f4f5f6f7f8f9"),
+    PRK  = hexstr2bin("077709362c2e32df0ddc3f0dc47bba63"
+                      "90b6c73bb50f9c3122ec844ad7c2b3e5"),
+    OKM  = hexstr2bin("3cb25f25faacd57a90434f64d0362f2a"
+                      "2d2d0a90cf1a5a4c5db02d56ecc4c5bf"
+                      "34007208d5b887185865"),
+    hkdf_test(sha256, Salt, IKM, PRK, Info, 42, OKM).
+
+sha_256_long() ->
+    [{doc, "Test with SHA-256 and longer inputs/outputs"}].
+sha_256_long(Config) when is_list(Config) ->
+    %% Hash = SHA-256
+    %% IKM  = 0x000102030405060708090a0b0c0d0e0f
+    %%        101112131415161718191a1b1c1d1e1f
+    %%        202122232425262728292a2b2c2d2e2f
+    %%        303132333435363738393a3b3c3d3e3f
+    %%        404142434445464748494a4b4c4d4e4f (80 octets)
+    %% salt = 0x606162636465666768696a6b6c6d6e6f
+    %%        707172737475767778797a7b7c7d7e7f
+    %%        808182838485868788898a8b8c8d8e8f
+    %%        909192939495969798999a9b9c9d9e9f
+    %%        a0a1a2a3a4a5a6a7a8a9aaabacadaeaf (80 octets)
+    %% info = 0xb0b1b2b3b4b5b6b7b8b9babbbcbdbebf
+    %%        c0c1c2c3c4c5c6c7c8c9cacbcccdcecf
+    %%        d0d1d2d3d4d5d6d7d8d9dadbdcdddedf
+    %%        e0e1e2e3e4e5e6e7e8e9eaebecedeeef
+    %%        f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff (80 octets)
+    %% L    = 82
+    
+    %% PRK  = 0x06a6b88c5853361a06104c9ceb35b45c
+    %%        ef760014904671014a193f40c15fc244 (32 octets)
+    %% OKM  = 0xb11e398dc80327a1c8e7f78c596a4934
+    %%        4f012eda2d4efad8a050cc4c19afa97c
+    %%        59045a99cac7827271cb41c65e590e09
+    %%        da3275600c2f09b8367793a9aca3db71
+    %%        cc30c58179ec3e87c14c01d5c1f3434f
+    %%        1d87 (82 octets)
+    IKM  = hexstr2bin("000102030405060708090a0b0c0d0e0f"
+                      "101112131415161718191a1b1c1d1e1f"
+                      "202122232425262728292a2b2c2d2e2f"
+                      "303132333435363738393a3b3c3d3e3f"
+                      "404142434445464748494a4b4c4d4e4f"
+                     ),
+    Salt = hexstr2bin("606162636465666768696a6b6c6d6e6f"
+                      "707172737475767778797a7b7c7d7e7f"
+                      "808182838485868788898a8b8c8d8e8f"
+                      "909192939495969798999a9b9c9d9e9f"
+                      "a0a1a2a3a4a5a6a7a8a9aaabacadaeaf"
+                     ),
+    Info = hexstr2bin("b0b1b2b3b4b5b6b7b8b9babbbcbdbebf"
+                      "c0c1c2c3c4c5c6c7c8c9cacbcccdcecf"
+                      "d0d1d2d3d4d5d6d7d8d9dadbdcdddedf"
+                      "e0e1e2e3e4e5e6e7e8e9eaebecedeeef"
+                      "f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff"
+                     ),
+    PRK  = hexstr2bin("06a6b88c5853361a06104c9ceb35b45c"
+                      "ef760014904671014a193f40c15fc244"),
+    OKM  = hexstr2bin("b11e398dc80327a1c8e7f78c596a4934"
+                      "4f012eda2d4efad8a050cc4c19afa97c"
+                      "59045a99cac7827271cb41c65e590e09"
+                      "da3275600c2f09b8367793a9aca3db71"
+                      "cc30c58179ec3e87c14c01d5c1f3434f"
+                      "1d87"
+                     ),
+    hkdf_test(sha256, Salt, IKM, PRK, Info, 82, OKM).
+sha_256_no_salt() ->
+    [{doc, "Test with SHA-256 and zero-length salt/info"}].
+sha_256_no_salt(Config) when is_list(Config) ->
+    %% Hash = SHA-256
+    %% IKM  = 0x0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b (22 octets)
+    %% salt = (0 octets)
+    %% info = (0 octets)
+    %% L    = 42
+    
+    %% PRK  = 0x19ef24a32c717b167f33a91d6f648bdf
+    %%        96596776afdb6377ac434c1c293ccb04 (32 octets)
+    %% OKM  = 0x8da4e775a563c18f715f802a063c5a31
+    %%        b8a11f5c5ee1879ec3454e5f3c738d2d
+    %%        9d201395faa4b61a96c8 (42 octets)
+    IKM  = hexstr2bin("0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b"),
+    Salt = <<>>,
+    Info = <<>>,
+    PRK  = hexstr2bin("19ef24a32c717b167f33a91d6f648bdf"
+                      "96596776afdb6377ac434c1c293ccb04"),
+    OKM  = hexstr2bin("8da4e775a563c18f715f802a063c5a31"
+                      "b8a11f5c5ee1879ec3454e5f3c738d2d"
+                      "9d201395faa4b61a96c8"),
+    hkdf_test(sha256, Salt, IKM, PRK, Info, 42, OKM).
+
+sha_basic() ->
+    [{doc, " Basic test case with SHA-1"}].
+sha_basic(Config) when is_list(Config) ->
+    %% Hash = SHA-1
+    %% IKM  = 0x0b0b0b0b0b0b0b0b0b0b0b (11 octets)
+    %% salt = 0x000102030405060708090a0b0c (13 octets)
+    %% info = 0xf0f1f2f3f4f5f6f7f8f9 (10 octets)
+    %% L    = 42
+    
+    %% PRK  = 0x9b6c18c432a7bf8f0e71c8eb88f4b30baa2ba243 (20 octets)
+    %% OKM  = 0x085a01ea1b10f36933068b56efa5ad81
+    %%        a4f14b822f5b091568a9cdd4f155fda2
+    %%        c22e422478d305f3f896 (42 octets)
+    IKM  = hexstr2bin("0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b"),
+    Salt = hexstr2bin("000102030405060708090a0b0c"),
+    Info = hexstr2bin("f0f1f2f3f4f5f6f7f8f9"),
+    PRK  = hexstr2bin("077709362c2e32df0ddc3f0dc47bba63"
+                      "90b6c73bb50f9c3122ec844ad7c2b3e5"),
+    OKM  = hexstr2bin("3cb25f25faacd57a90434f64d0362f2a"
+                      "2d2d0a90cf1a5a4c5db02d56ecc4c5bf"
+                      "34007208d5b887185865"),
+    hkdf_test(sha256, Salt, IKM, PRK, Info, 42, OKM).
+
+sha_long() ->
+    [{doc, "Test with SHA-1 and longer inputs/outputs"}].
+sha_long(Config) when is_list(Config) ->
+    %% Hash = SHA-1
+    %% IKM  = 0x000102030405060708090a0b0c0d0e0f
+    %%        101112131415161718191a1b1c1d1e1f
+    %%        202122232425262728292a2b2c2d2e2f
+    %%        303132333435363738393a3b3c3d3e3f
+    %%        404142434445464748494a4b4c4d4e4f (80 octets)
+    %% salt = 0x606162636465666768696a6b6c6d6e6f
+    %%        707172737475767778797a7b7c7d7e7f
+    %%        808182838485868788898a8b8c8d8e8f
+    %%        909192939495969798999a9b9c9d9e9f
+    %%        a0a1a2a3a4a5a6a7a8a9aaabacadaeaf (80 octets)
+    %% info = 0xb0b1b2b3b4b5b6b7b8b9babbbcbdbebf
+    %%        c0c1c2c3c4c5c6c7c8c9cacbcccdcecf
+    %%        d0d1d2d3d4d5d6d7d8d9dadbdcdddedf
+    %%        e0e1e2e3e4e5e6e7e8e9eaebecedeeef
+    %%        f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff (80 octets)
+    %% L    = 82
+    
+    %% PRK  = 0x8adae09a2a307059478d309b26c4115a224cfaf6 (20 octets)
+    %% OKM  = 0x0bd770a74d1160f7c9f12cd5912a06eb
+    %%        ff6adcae899d92191fe4305673ba2ffe
+    %%        8fa3f1a4e5ad79f3f334b3b202b2173c
+    %%        486ea37ce3d397ed034c7f9dfeb15c5e
+    %%        927336d0441f4c4300e2cff0d0900b52
+    %%        d3b4 (82 octets)
+    IKM  = hexstr2bin("000102030405060708090a0b0c0d0e0f"
+                      "101112131415161718191a1b1c1d1e1f"
+                      "202122232425262728292a2b2c2d2e2f"
+                      "303132333435363738393a3b3c3d3e3f"
+                      "404142434445464748494a4b4c4d4e4f"
+                     ),
+    Salt = hexstr2bin("606162636465666768696a6b6c6d6e6f"
+                      "707172737475767778797a7b7c7d7e7f"
+                      "808182838485868788898a8b8c8d8e8f"
+                      "909192939495969798999a9b9c9d9e9f"
+                      "a0a1a2a3a4a5a6a7a8a9aaabacadaeaf"
+                     ),
+    Info = hexstr2bin("b0b1b2b3b4b5b6b7b8b9babbbcbdbebf"
+                      "c0c1c2c3c4c5c6c7c8c9cacbcccdcecf"
+                      "d0d1d2d3d4d5d6d7d8d9dadbdcdddedf"
+                      "e0e1e2e3e4e5e6e7e8e9eaebecedeeef"
+                      "f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff"
+                     ),
+    PRK  = hexstr2bin("8adae09a2a307059478d309b26c4115a224cfaf6"),
+    OKM  = hexstr2bin("0bd770a74d1160f7c9f12cd5912a06eb"
+                      "ff6adcae899d92191fe4305673ba2ffe"
+                      "8fa3f1a4e5ad79f3f334b3b202b2173c"
+                      "486ea37ce3d397ed034c7f9dfeb15c5e"
+                      "927336d0441f4c4300e2cff0d0900b52"
+                      "d3b4"
+                     ),
+    hkdf_test(sha, Salt, IKM, PRK, Info, 82, OKM).
+
+sha_no_salt() ->
+    [{doc, "Test with SHA-1 and zero-length salt/info"}].
+sha_no_salt(Config) when is_list(Config) ->
+    %%   Hash = SHA-1
+    %% IKM  = 0x0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b (22 octets)
+    %% salt = (0 octets)
+    %% info = (0 octets)
+    %% L    = 42
+
+    %% PRK  = 0xda8c8a73c7fa77288ec6f5e7c297786aa0d32d01 (20 octets)
+    %% OKM  = 0x0ac1af7002b3d761d1e55298da9d0506
+    %%        b9ae52057220a306e07b6b87e8df21d0
+    %%        ea00033de03984d34918 (42 octets)
+    IKM  = hexstr2bin("0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b"),
+    Salt = <<>>,
+    Info = <<>>,
+    PRK  = hexstr2bin("da8c8a73c7fa77288ec6f5e7c297786aa0d32d01"),
+    OKM  = hexstr2bin("0ac1af7002b3d761d1e55298da9d0506"
+                      "b9ae52057220a306e07b6b87e8df21d0"
+                      "ea00033de03984d34918"),
+    hkdf_test(sha, Salt, IKM, PRK, Info, 42, OKM).
+
+
+sha_default_salt() ->
+    [{doc, "Test with SHA-1, salt not provided (defaults to HashLen zero octets),
+   zero-length info"}].
+sha_default_salt(Config) when is_list(Config) ->     
+    %% Hash = SHA-1
+    %% IKM  = 0x0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c (22 octets)
+    %% salt = not provided (defaults to HashLen zero octets)
+    %% info = (0 octets)
+    %% L    = 42
+
+    %% PRK  = 0x2adccada18779e7c2077ad2eb19d3f3e731385dd (20 octets)
+    %% OKM  = 0x2c91117204d745f3500d636a62f64f0a
+    %%        b3bae548aa53d423b0d1f27ebba6f5e5
+    %%        673a081d70cce7acfc48 (42 octets)
+    IKM  = hexstr2bin("0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c"),
+    Salt = binary:copy(<<0>>, 20),
+    Info = <<>>,
+    PRK  = hexstr2bin("2adccada18779e7c2077ad2eb19d3f3e731385dd"),
+    OKM  = hexstr2bin("2c91117204d745f3500d636a62f64f0a"
+                      "b3bae548aa53d423b0d1f27ebba6f5e5"
+                      "673a081d70cce7acfc48"),
+    hkdf_test(sha, Salt, IKM, PRK, Info, 42, OKM).
+
+hkdf_test(HashAlg, Salt, KeyingMaterial, PsedoRandKey, ContextInfo, Length, Key) ->   
+    PsedoRandKey = tls_v1:hkdf_extract(HashAlg, Salt, KeyingMaterial),
+    Key = tls_v1:hkdf_expand(PsedoRandKey, ContextInfo, Length, HashAlg).
+    
+hexstr2bin(S) when is_binary(S) ->
+    list_to_binary(hexstr2list(binary_to_list(S)));
+hexstr2bin(S) ->
+    list_to_binary(hexstr2list(S)).
+
+hexstr2list([$ |T]) ->
+    hexstr2list(T);
+hexstr2list([X,Y|T]) ->
+    [mkint(X)*16 + mkint(Y) | hexstr2list(T)];
+hexstr2list([]) ->
+    [].
+mkint(C) when $0 =< C, C =< $9 ->
+    C - $0;
+mkint(C) when $A =< C, C =< $F ->
+    C - $A + 10;
+mkint(C) when $a =< C, C =< $f ->
+    C - $a + 10.
diff --git a/lib/ssl/test/ssl_session_cache_SUITE.erl b/lib/ssl/test/ssl_session_cache_SUITE.erl
index a0fab58b9d..7f33fe3204 100644
--- a/lib/ssl/test/ssl_session_cache_SUITE.erl
+++ b/lib/ssl/test/ssl_session_cache_SUITE.erl
@@ -48,7 +48,8 @@ all() ->
      session_cache_process_list,
      session_cache_process_mnesia,
      client_unique_session,
-     max_table_size
+     max_table_size,
+     save_specific_session
      ].
 
 groups() ->
@@ -60,10 +61,7 @@ init_per_suite(Config0) ->
 	ok ->
 	    ssl_test_lib:clean_start(),
 	    %% make rsa certs using 
-	    {ok, _} = make_certs:all(proplists:get_value(data_dir, Config0),
-				     proplists:get_value(priv_dir, Config0)),
-	    Config = ssl_test_lib:make_dsa_cert(Config0),
-	    ssl_test_lib:cert_options(Config)
+            ssl_test_lib:make_rsa_cert(Config0)
     catch _:_ ->
 	    {skip, "Crypto did not start"}
     end.
@@ -97,7 +95,10 @@ init_per_testcase(session_cleanup, Config) ->
 init_per_testcase(client_unique_session, Config) ->
     ct:timetrap({seconds, 40}),
     Config;
-
+init_per_testcase(save_specific_session, Config) ->
+    ssl_test_lib:clean_start(),
+    ct:timetrap({seconds, 5}),
+    Config;
 init_per_testcase(max_table_size, Config) ->
     ssl:stop(),
     application:load(ssl),
@@ -141,7 +142,7 @@ end_per_testcase(max_table_size, Config) ->
     end_per_testcase(default_action, Config);
 end_per_testcase(Case, Config) when Case == session_cache_process_list;
 				    Case == session_cache_process_mnesia ->
-    ets:delete(ssl_test),
+    catch ets:delete(ssl_test),
     Config;
 end_per_testcase(_, Config) ->
     Config.
@@ -154,8 +155,8 @@ client_unique_session() ->
       "sets up many connections"}].
 client_unique_session(Config) when is_list(Config) ->
     process_flag(trap_exit, true),
-    ClientOpts = proplists:get_value(client_opts, Config),
-    ServerOpts = proplists:get_value(server_opts, Config),
+    ClientOpts = proplists:get_value(client_rsa_verify_opts, Config),
+    ServerOpts = proplists:get_value(server_rsa_opts, Config),
     {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
     Server =
 	ssl_test_lib:start_server([{node, ServerNode}, {port, 0},
@@ -164,8 +165,7 @@ client_unique_session(Config) when is_list(Config) ->
 				   {tcp_options, [{active, false}]},
 				   {options, ServerOpts}]),
     Port = ssl_test_lib:inet_port(Server),
-    LastClient = clients_start(Server, 
-			    ClientNode, Hostname, Port, ClientOpts, client_unique_session, 20),
+    LastClient = clients_start(Server, ClientNode, Hostname, Port, ClientOpts, 20),
     receive 
 	{LastClient, {ok, _}} ->
 	    ok
@@ -185,8 +185,8 @@ session_cleanup() ->
      "does not grow and grow ..."}].
 session_cleanup(Config) when is_list(Config) ->
     process_flag(trap_exit, true),
-    ClientOpts = ssl_test_lib:ssl_options(client_opts, Config),
-    ServerOpts = ssl_test_lib:ssl_options(server_opts, Config),
+    ClientOpts = ssl_test_lib:ssl_options(client_rsa_verify_opts, Config),
+    ServerOpts = ssl_test_lib:ssl_options(server_rsa_opts, Config),
     {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
 
     Server =
@@ -254,13 +254,75 @@ session_cache_process_mnesia(Config) when is_list(Config) ->
     session_cache_process(mnesia,Config).
 
 %%--------------------------------------------------------------------
+save_specific_session() ->
+    [{doc, "Test that we can save a specific client session"
+     }].
+save_specific_session(Config) when is_list(Config) ->
+    process_flag(trap_exit, true),
+    ClientOpts = proplists:get_value(client_rsa_verify_opts, Config),
+    ServerOpts = proplists:get_value(server_rsa_opts, Config),
+    {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
+    Server =
+	ssl_test_lib:start_server([{node, ServerNode}, {port, 0},
+				   {from, self()},
+				   {mfa, {ssl_test_lib, no_result, []}},
+				   {tcp_options, [{active, false}]},
+				   {options, ServerOpts}]),
+    Port = ssl_test_lib:inet_port(Server),
+    
+    Client1 = ssl_test_lib:start_client([{node, ClientNode},
+                                         {port, Port}, {host, Hostname},
+                                         {mfa, {ssl_test_lib, session_id, []}},
+                                         {from, self()},  {options, ClientOpts}]),
+    Server ! listen,
+    
+    Client2 = ssl_test_lib:start_client([{node, ClientNode},
+                                         {port, Port}, {host, Hostname},
+                                         {mfa, {ssl_test_lib, session_id, []}},
+                                         {from, self()},  {options, [{reuse_sessions, save} | ClientOpts]}]),    
+    SessionID1 =
+        receive 
+            {Client1, S1} ->
+                S1
+        end,
+    
+    SessionID2 =
+        receive 
+            {Client2, S2} ->
+                S2
+        end,
+    
+    true = SessionID1 =/= SessionID2,
+
+    {status, _, _, StatusInfo} = sys:get_status(whereis(ssl_manager)),
+    [_, _,_, _, Prop] = StatusInfo,
+    State = ssl_test_lib:state(Prop),
+    ClientCache = element(2, State),
+    2 = ssl_session_cache:size(ClientCache),
+
+    Server ! listen,
+
+    Client3 = ssl_test_lib:start_client([{node, ClientNode},
+                                         {port, Port}, {host, Hostname},
+                                         {mfa, {ssl_test_lib, session_id, []}},
+                                         {from, self()},  {options, [{reuse_session, SessionID2} | ClientOpts]}]), 
+    receive 
+        {Client3, SessionID2} ->
+            ok;
+        {Client3, SessionID3}->
+            ct:fail({got, SessionID3, expected, SessionID2});
+        Other ->
+            ct:fail({got,Other})
+    end.
+
+%%--------------------------------------------------------------------
 
 max_table_size() ->
     [{doc,"Test max limit on session table"}].
 max_table_size(Config) when is_list(Config) ->
     process_flag(trap_exit, true),
-    ClientOpts = proplists:get_value(client_verification_opts, Config),
-    ServerOpts = proplists:get_value(server_verification_opts, Config),
+    ClientOpts = proplists:get_value(client_rsa_verify_opts, Config),
+    ServerOpts = proplists:get_value(server_rsa_verify_opts, Config),
     {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
     Server =
 	ssl_test_lib:start_server([{node, ServerNode}, {port, 0},
@@ -270,7 +332,7 @@ max_table_size(Config) when is_list(Config) ->
 				   {options, ServerOpts}]),
     Port = ssl_test_lib:inet_port(Server),
     LastClient = clients_start(Server, 
-			    ClientNode, Hostname, Port, ClientOpts, max_table_size, 20),
+			    ClientNode, Hostname, Port, ClientOpts, 20),
     receive 
 	{LastClient, {ok, _}} ->
 	    ok
@@ -426,25 +488,27 @@ session_loop(Sess) ->
 %%--------------------------------------------------------------------
 
 session_cache_process(_Type,Config) when is_list(Config) ->
-    ssl_basic_SUITE:reuse_session(Config).
+    ClientOpts = ssl_test_lib:ssl_options(client_rsa_verify_opts, Config),
+    ServerOpts = ssl_test_lib:ssl_options(server_rsa_opts, Config),
+    ssl_test_lib:reuse_session(ClientOpts, ServerOpts, Config).
 
 
-clients_start(_Server, ClientNode, Hostname, Port, ClientOpts, Test, 0) ->
+clients_start(_Server, ClientNode, Hostname, Port, ClientOpts, 0) ->
     %% Make sure session is registered
     ct:sleep(?SLEEP * 2),
     ssl_test_lib:start_client([{node, ClientNode},
 			       {port, Port}, {host, Hostname},
 			       {mfa, {?MODULE, connection_info_result, []}},
-			       {from, self()},  {options, test_copts(Test, 0, ClientOpts)}]);
-clients_start(Server, ClientNode, Hostname, Port, ClientOpts, Test, N) ->
+			       {from, self()},  {options, ClientOpts}]);
+clients_start(Server, ClientNode, Hostname, Port, ClientOpts, N) ->
     spawn_link(ssl_test_lib, start_client, 
 	       [[{node, ClientNode},
 		 {port, Port}, {host, Hostname},
 		 {mfa, {ssl_test_lib, no_result, []}},
-		 {from, self()},  {options, test_copts(Test, N, ClientOpts)}]]),
+		 {from, self()},  {options, ClientOpts}]]),
     Server ! listen,
     wait_for_server(),
-    clients_start(Server, ClientNode, Hostname, Port, ClientOpts, Test, N-1).
+    clients_start(Server, ClientNode, Hostname, Port, ClientOpts, N-1).
 	
 connection_info_result(Socket) ->
     ssl:connection_information(Socket, [protocol, cipher_suite]).
@@ -481,21 +545,3 @@ get_delay_timers() ->
     
 wait_for_server() ->
     ct:sleep(100).	
-
-
-test_copts(_, 0, ClientOpts) ->
-      ClientOpts;		 
-test_copts(max_table_size, N, ClientOpts) ->
-    Version = tls_record:highest_protocol_version([]),		   
-    CipherSuites = %%lists:map(fun(X) -> ssl_cipher_format:suite_definition(X) end, ssl_cipher:filter_suites(ssl_cipher:suites(Version))),
-[ Y|| Y = {Alg,_, _, _} <- lists:map(fun(X) -> ssl_cipher_format:suite_definition(X) end, ssl_cipher:filter_suites(ssl_cipher:suites(Version))), Alg =/=  ecdhe_ecdsa,  Alg =/=  ecdh_ecdsa, Alg =/=  ecdh_rsa, Alg =/=  ecdhe_rsa, Alg =/= dhe_dss, Alg =/= dss], 
-    case length(CipherSuites) of 
-        M when M >= N ->		      
-          Cipher = lists:nth(N, CipherSuites),
-	  ct:pal("~p",[Cipher]),
-          [{ciphers, [Cipher]} | ClientOpts];
-       _ -> 	   		 
-        ClientOpts
-    end;
-test_copts(_, _, ClientOpts) ->
-     ClientOpts.
diff --git a/lib/ssl/test/ssl_sni_SUITE.erl b/lib/ssl/test/ssl_sni_SUITE.erl
index 251b6a2639..7629d75100 100644
--- a/lib/ssl/test/ssl_sni_SUITE.erl
+++ b/lib/ssl/test/ssl_sni_SUITE.erl
@@ -236,8 +236,8 @@ dns_name_reuse(Config) ->
                                          {mfa, {ssl_test_lib, session_info_result, []}},
                                          {from, self()},  {options, [{verify, verify_peer} | ClientConf]}]),
     
-    ssl_test_lib:check_result(Client1, {error, {tls_alert, "handshake failure"}}),
-    ssl_test_lib:close(Client0).
+    ssl_test_lib:check_client_alert(Client1, handshake_failure).
+
 %%--------------------------------------------------------------------
 %% Internal Functions ------------------------------------------------
 %%--------------------------------------------------------------------
@@ -370,8 +370,8 @@ unsuccessfull_connect(ServerOptions, ClientOptions, Hostname0, Config) ->
 					      {from, self()}, 
 					      {options, ClientOptions}]),
     
-    ssl_test_lib:check_result(Server, {error, {tls_alert, "handshake failure"}},
-			      Client, {error, {tls_alert, "handshake failure"}}).
+    ssl_test_lib:check_server_alert(Server, Client, handshake_failure).
+
 host_name(undefined, Hostname) ->
     Hostname;
 host_name(Hostname, _) ->
diff --git a/lib/ssl/test/ssl_test_lib.erl b/lib/ssl/test/ssl_test_lib.erl
index a8d62d6c4e..94c2cb8d9b 100644
--- a/lib/ssl/test/ssl_test_lib.erl
+++ b/lib/ssl/test/ssl_test_lib.erl
@@ -30,6 +30,7 @@
 
 -record(sslsocket, { fd = nil, pid = nil}).
 -define(SLEEP, 1000).
+-define(DEFAULT_CURVE, secp256r1).
 
 %% For now always run locally
 run_where(_) ->
@@ -50,20 +51,20 @@ node_to_hostip(Node) ->
     Address.
 
 start_server(Args) ->
-    Result = spawn_link(?MODULE, run_server, [Args]),
+    Node = proplists:get_value(node, Args),
+    Result = spawn_link(Node, ?MODULE, run_server, [Args]),
     receive
 	{listen, up} ->
 	    Result
     end.
 
 run_server(Opts) ->
-    Node = proplists:get_value(node, Opts),
     Port = proplists:get_value(port, Opts),
     Options = proplists:get_value(options, Opts),
     Pid = proplists:get_value(from, Opts),
     Transport =  proplists:get_value(transport, Opts, ssl),
     ct:log("~p:~p~nssl:listen(~p, ~p)~n", [?MODULE,?LINE, Port, Options]),
-    {ok, ListenSocket} = rpc:call(Node, Transport, listen, [Port, Options]),
+    {ok, ListenSocket} = Transport:listen(Port, Options),
     Pid ! {listen, up},
     send_selected_port(Pid, Port, ListenSocket),
     run_server(ListenSocket, Opts).
@@ -89,13 +90,12 @@ do_run_server(_, ok = Result, Opts) ->
     Pid = proplists:get_value(from, Opts),
     Pid ! {self(), Result};
 do_run_server(ListenSocket, AcceptSocket, Opts) ->
-    Node = proplists:get_value(node, Opts),
     Pid = proplists:get_value(from, Opts),
     Transport = proplists:get_value(transport, Opts, ssl),
     {Module, Function, Args} = proplists:get_value(mfa, Opts),
     ct:log("~p:~p~nServer: apply(~p,~p,~p)~n",
            [?MODULE,?LINE, Module, Function, [AcceptSocket | Args]]),
-    case rpc:call(Node, Module, Function, [AcceptSocket | Args]) of
+    case apply(Module, Function, [AcceptSocket | Args]) of
 	no_result_msg ->
 	    ok;
 	Msg ->
@@ -109,8 +109,8 @@ do_run_server(ListenSocket, AcceptSocket, Opts) ->
 	    run_server(ListenSocket, [MFA | proplists:delete(mfa, Opts)]);
 	close ->
 	    ct:log("~p:~p~nServer closing  ~p ~n", [?MODULE,?LINE, self()]),
-	    Result = rpc:call(Node, Transport, close, [AcceptSocket], 500),
-	    Result1 = rpc:call(Node, Transport, close, [ListenSocket], 500),
+	    Result = Transport:close(AcceptSocket),
+	    Result1 = Transport:close(ListenSocket),
 	    ct:log("~p:~p~nResult ~p : ~p ~n", [?MODULE,?LINE, Result, Result1]);
 	{ssl_closed, _} ->
 	    ok
@@ -131,41 +131,37 @@ connect(#sslsocket{} = ListenSocket, Opts) ->
 	  remove_close_msg(ReconnectTimes),
 	  AcceptSocket
     end;
-connect(ListenSocket, Opts) ->
-    Node = proplists:get_value(node, Opts),
+connect(ListenSocket, _Opts) ->
     ct:log("~p:~p~ngen_tcp:accept(~p)~n", [?MODULE,?LINE, ListenSocket]),
-    {ok, AcceptSocket} = rpc:call(Node, gen_tcp, accept, 
-				  [ListenSocket]),
+    {ok, AcceptSocket} = gen_tcp:accept(ListenSocket),
     AcceptSocket.
 
 connect(_, _, 0, AcceptSocket, _, _, _) ->
     AcceptSocket;
 connect(ListenSocket, Node, _N, _, Timeout, SslOpts, cancel) ->
     ct:log("ssl:transport_accept(~p)~n", [ListenSocket]),
-    {ok, AcceptSocket} = rpc:call(Node, ssl, transport_accept, 
-				  [ListenSocket]),    
+    {ok, AcceptSocket} = ssl:transport_accept(ListenSocket),    
     ct:log("~p:~p~nssl:handshake(~p,~p,~p)~n", [?MODULE,?LINE, AcceptSocket, SslOpts,Timeout]),
 
-    case rpc:call(Node, ssl, handshake, [AcceptSocket, SslOpts, Timeout]) of
+    case ssl:handshake(AcceptSocket, SslOpts, Timeout) of
 	{ok, Socket0, Ext} ->
             ct:log("Ext ~p:~n", [Ext]),            
             ct:log("~p:~p~nssl:handshake_cancel(~p)~n", [?MODULE,?LINE, Socket0]),            
-            rpc:call(Node, ssl, handshake_cancel, [Socket0]);
+            ssl:handshake_cancel(Socket0);
         Result ->
 	    ct:log("~p:~p~nssl:handshake@~p ret ~p",[?MODULE,?LINE, Node,Result]),
 	    Result
     end;
 connect(ListenSocket, Node, N, _, Timeout, SslOpts, [_|_] =ContOpts) ->
     ct:log("ssl:transport_accept(~p)~n", [ListenSocket]),
-    {ok, AcceptSocket} = rpc:call(Node, ssl, transport_accept, 
-				  [ListenSocket]),    
+    {ok, AcceptSocket} = ssl:transport_accept(ListenSocket),    
     ct:log("~p:~p~nssl:handshake(~p,~p,~p)~n", [?MODULE,?LINE, AcceptSocket, SslOpts,Timeout]),
 
-    case rpc:call(Node, ssl, handshake, [AcceptSocket, SslOpts, Timeout]) of
+    case ssl:handshake(AcceptSocket, SslOpts, Timeout) of
 	{ok, Socket0, Ext} ->
             ct:log("Ext ~p:~n", [Ext]),            
             ct:log("~p:~p~nssl:handshake_continue(~p,~p,~p)~n", [?MODULE,?LINE, Socket0, ContOpts,Timeout]),            
-            case rpc:call(Node, ssl, handshake_continue, [Socket0, ContOpts, Timeout]) of
+            case ssl:handshake_continue(Socket0, ContOpts, Timeout) of
                 {ok, Socket} ->
                     connect(ListenSocket, Node, N-1, Socket, Timeout, SslOpts, ContOpts);
                 Error ->
@@ -178,35 +174,35 @@ connect(ListenSocket, Node, N, _, Timeout, SslOpts, [_|_] =ContOpts) ->
     end;
 connect(ListenSocket, Node, N, _, Timeout, [], ContOpts) ->
     ct:log("ssl:transport_accept(~p)~n", [ListenSocket]),
-    {ok, AcceptSocket} = rpc:call(Node, ssl, transport_accept, 
-				  [ListenSocket]),    
+    {ok, AcceptSocket} = ssl:transport_accept(ListenSocket),    
     ct:log("~p:~p~nssl:ssl_accept(~p, ~p)~n", [?MODULE,?LINE, AcceptSocket, Timeout]),
 
-    case rpc:call(Node, ssl, ssl_accept, [AcceptSocket, Timeout]) of
-	ok ->
-	    connect(ListenSocket, Node, N-1, AcceptSocket, Timeout, [], ContOpts);
+    case ssl:handshake(AcceptSocket, Timeout) of
+	{ok, Socket} ->
+	    connect(ListenSocket, Node, N-1, Socket, Timeout, [], ContOpts);
 	Result ->
-	    ct:log("~p:~p~nssl:ssl_accept@~p ret ~p",[?MODULE,?LINE, Node,Result]),
+	    ct:log("~p:~p~nssl:handshake@~p ret ~p",[?MODULE,?LINE, Node,Result]),
 	    Result
     end;
-connect(ListenSocket, Node, _, _, Timeout, Opts, _) ->
+connect(ListenSocket, _Node, _, _, Timeout, Opts, _) ->
     ct:log("ssl:transport_accept(~p)~n", [ListenSocket]),
-    {ok, AcceptSocket} = rpc:call(Node, ssl, transport_accept, 
-				  [ListenSocket]),    
-    ct:log("ssl:ssl_accept(~p,~p, ~p)~n", [AcceptSocket, Opts, Timeout]),
-    rpc:call(Node, ssl, ssl_accept, [AcceptSocket, Opts, Timeout]),
+    {ok, AcceptSocket} = ssl:transport_accept(ListenSocket),    
+    ct:log("ssl:handshake(~p,~p, ~p)~n", [AcceptSocket, Opts, Timeout]),
+    ssl:handshake(AcceptSocket, Opts, Timeout),
     AcceptSocket.
 
 
 start_server_transport_abuse_socket(Args) ->
-    Result = spawn_link(?MODULE, transport_accept_abuse, [Args]),
+    Node = proplists:get_value(node, Args),
+    Result = spawn_link(Node, ?MODULE, transport_accept_abuse, [Args]),
     receive
 	{listen, up} ->
 	    Result
     end.
 
 start_server_transport_control(Args) ->
-    Result = spawn_link(?MODULE, transport_switch_control, [Args]),
+    Node = proplists:get_value(node, Args),
+    Result = spawn_link(Node, ?MODULE, transport_switch_control, [Args]),
     receive
 	{listen, up} ->
 	    Result
@@ -214,35 +210,31 @@ start_server_transport_control(Args) ->
 
 
 transport_accept_abuse(Opts) ->
-    Node = proplists:get_value(node, Opts),
     Port = proplists:get_value(port, Opts),
     Options = proplists:get_value(options, Opts),
     Pid = proplists:get_value(from, Opts),
     Transport =  proplists:get_value(transport, Opts, ssl),
     ct:log("~p:~p~nssl:listen(~p, ~p)~n", [?MODULE,?LINE, Port, Options]),
-    {ok, ListenSocket} = rpc:call(Node, Transport, listen, [Port, Options]),
+    {ok, ListenSocket} = Transport:listen(Port, Options),
     Pid ! {listen, up},
     send_selected_port(Pid, Port, ListenSocket),
-    {ok, AcceptSocket} = rpc:call(Node, ssl, transport_accept, 
-                                  [ListenSocket]),    
-    {error, _} = rpc:call(Node, ssl, connection_information, [AcceptSocket]),
-    _ = rpc:call(Node, ssl, handshake, [AcceptSocket, infinity]),
+    {ok, AcceptSocket} = ssl:transport_accept(ListenSocket),    
+    {error, _} = ssl:connection_information(AcceptSocket),
+    _ = ssl:handshake(AcceptSocket, infinity),
     Pid ! {self(), ok}.
 
 
 transport_switch_control(Opts) ->
-    Node = proplists:get_value(node, Opts),
     Port = proplists:get_value(port, Opts),
     Options = proplists:get_value(options, Opts),
     Pid = proplists:get_value(from, Opts),
     Transport =  proplists:get_value(transport, Opts, ssl),
     ct:log("~p:~p~nssl:listen(~p, ~p)~n", [?MODULE,?LINE, Port, Options]),
-    {ok, ListenSocket} = rpc:call(Node, Transport, listen, [Port, Options]),
+    {ok, ListenSocket} = Transport:listen(Port, Options),
     Pid ! {listen, up},
     send_selected_port(Pid, Port, ListenSocket),
-    {ok, AcceptSocket} = rpc:call(Node, ssl, transport_accept, 
-                                  [ListenSocket]),    
-    ok = rpc:call(Node, ssl, controlling_process, [AcceptSocket, self()]),
+    {ok, AcceptSocket} = ssl:transport_accept(ListenSocket),    
+    ok = ssl:controlling_process(AcceptSocket, self()),
     Pid ! {self(), ok}.
 
 
@@ -255,7 +247,8 @@ remove_close_msg(ReconnectTimes) ->
     end.
 	    
 start_client(Args) ->
-    Result = spawn_link(?MODULE, run_client_init, [lists:delete(return_socket, Args)]),
+    Node = proplists:get_value(node, Args),
+    Result = spawn_link(Node, ?MODULE, run_client_init, [lists:delete(return_socket, Args)]),
     receive 
 	{connected, Socket} ->
 	    case lists:member(return_socket, Args) of
@@ -287,8 +280,8 @@ run_client(Opts) ->
             client_cont_loop(Node, Host, Port, Pid, Transport, Options, ContOpts, Opts)
     end.
 
-client_loop(Node, Host, Port, Pid, Transport, Options, Opts) ->
-    case rpc:call(Node, Transport, connect, [Host, Port, Options]) of
+client_loop(_Node, Host, Port, Pid, Transport, Options, Opts) ->
+    case Transport:connect(Host, Port, Options) of
 	{ok, Socket} ->
 	    Pid ! {connected, Socket},
 	    ct:log("~p:~p~nClient: connected~n", [?MODULE,?LINE]),
@@ -298,7 +291,7 @@ client_loop(Node, Host, Port, Pid, Transport, Options, Opts) ->
 	    {Module, Function, Args} = proplists:get_value(mfa, Opts),
 	    ct:log("~p:~p~nClient: apply(~p,~p,~p)~n",
 			       [?MODULE,?LINE, Module, Function, [Socket | Args]]),
-	    case rpc:call(Node, Module, Function, [Socket | Args]) of
+	    case apply(Module, Function, [Socket | Args]) of
 		no_result_msg ->
 		    ok;
 		Msg ->
@@ -308,7 +301,7 @@ client_loop(Node, Host, Port, Pid, Transport, Options, Opts) ->
 	    receive
 		close ->
 		    ct:log("~p:~p~nClient closing~n", [?MODULE,?LINE]),
-		    rpc:call(Node, Transport, close, [Socket]);
+		    Transport:close(Socket);
 		{ssl_closed, Socket} ->
 		    ok;
 		{gen_tcp, closed} ->
@@ -338,16 +331,13 @@ client_loop(Node, Host, Port, Pid, Transport, Options, Opts) ->
 	    end;
 	{error, Reason} ->
 	    ct:log("~p:~p~nClient: connection failed: ~p ~n", [?MODULE,?LINE, Reason]),
-	    Pid ! {connect_failed, Reason};
-	{badrpc,BadRPC} ->
-            ct:log("~p:~p~nBad rpc: ~p",[?MODULE,?LINE, BadRPC]),
-            Pid ! {connect_failed, {badrpc,BadRPC}}
+	    Pid ! {connect_failed, Reason}
     end.
 
-client_cont_loop(Node, Host, Port, Pid, Transport, Options, cancel, _Opts) ->
-    case rpc:call(Node, Transport, connect, [Host, Port, Options]) of
+client_cont_loop(_Node, Host, Port, Pid, Transport, Options, cancel, _Opts) ->
+    case Transport:connect(Host, Port, Options) of
         {ok, Socket, _} ->
-           Result = rpc:call(Node, Transport, handshake_cancel, [Socket]),
+           Result = Transport:handshake_cancel(Socket),
             ct:log("~p:~p~nClient: Cancel: ~p ~n", [?MODULE,?LINE, Result]),
             Pid ! {connect_failed, Result};
         {error, Reason} ->
@@ -355,17 +345,17 @@ client_cont_loop(Node, Host, Port, Pid, Transport, Options, cancel, _Opts) ->
 	    Pid ! {connect_failed, Reason}
     end;
 
-client_cont_loop(Node, Host, Port, Pid, Transport, Options, ContOpts, Opts) ->
-    case rpc:call(Node, Transport, connect, [Host, Port, Options]) of
+client_cont_loop(_Node, Host, Port, Pid, Transport, Options, ContOpts, Opts) ->
+    case Transport:connect(Host, Port, Options) of
         {ok, Socket0, _} ->
             ct:log("~p:~p~nClient: handshake_continue(~p, ~p, infinity) ~n", [?MODULE, ?LINE, Socket0, ContOpts]),
-            case rpc:call(Node, Transport, handshake_continue, [Socket0, ContOpts]) of
+            case Transport:handshake_continue(Socket0, ContOpts) of
                 {ok, Socket} ->
                     Pid ! {connected, Socket},
                     {Module, Function, Args} = proplists:get_value(mfa, Opts),
                     ct:log("~p:~p~nClient: apply(~p,~p,~p)~n",
                            [?MODULE,?LINE, Module, Function, [Socket | Args]]),
-                    case rpc:call(Node, Module, Function, [Socket | Args]) of
+                    case apply(Module, Function, [Socket | Args]) of
                         no_result_msg ->
                             ok;
                         Msg ->
@@ -437,6 +427,37 @@ check_result(Pid, Msg) ->
 		      {got, Unexpected}},
 	    ct:fail(Reason)
     end.
+check_server_alert(Pid, Alert) ->
+    receive
+	{Pid, {error, {tls_alert, {Alert, _}}}} ->
+            ok
+    end.
+check_server_alert(Server, Client, Alert) ->
+    receive
+	{Server, {error, {tls_alert, {Alert, _}}}} ->
+	    receive
+		{Client, {error, {tls_alert, {Alert, _}}}} ->
+		    ok;
+		{Client, {error, closed}} ->
+		    ok
+	    end
+    end.
+check_client_alert(Pid, Alert) ->
+    receive
+	{Pid, {error, {tls_alert, {Alert, _}}}} ->
+            ok
+    end.
+check_client_alert(Server, Client, Alert) ->
+    receive
+	{Client, {error, {tls_alert, {Alert, _}}}} ->
+	    receive
+		{Server, {error, {tls_alert, {Alert, _}}}} ->
+		    ok;
+		{Server, {error, closed}} ->
+		    ok
+	    end
+    end.
+
 
 wait_for_result(Server, ServerMsg, Client, ClientMsg) -> 
     receive 
@@ -482,13 +503,6 @@ wait_for_result(Pid, Msg) ->
 	%%     Unexpected
     end.
 
-user_lookup(psk, _Identity, UserState) ->
-    {ok, UserState};
-user_lookup(srp, Username, _UserState) ->
-    Salt = ssl_cipher:random_bytes(16),
-    UserPassHash = crypto:hash(sha, [Salt, crypto:hash(sha, [Username, <<$:>>, <<"secret">>])]),
-    {ok, {srp_1024, Salt, UserPassHash}}.
-
 cert_options(Config) ->
     ClientCaCertFile = filename:join([proplists:get_value(priv_dir, Config), 
 				      "client", "cacerts.pem"]),
@@ -523,7 +537,7 @@ cert_options(Config) ->
      {client_verification_opts, [{cacertfile, ServerCaCertFile}, 
 				{certfile, ClientCertFile},  
 				{keyfile, ClientKeyFile},
-				{ssl_imp, new}]}, 
+				{verify, verify_peer}]}, 
      {client_verification_opts_digital_signature_only, [{cacertfile, ServerCaCertFile},
 				{certfile, ClientCertFileDigitalSignatureOnly},
 				{keyfile, ClientKeyFile},
@@ -618,9 +632,12 @@ make_rsa_cert_chains(UserConf, Config, Suffix) ->
     }.
 
 make_ec_cert_chains(UserConf, ClientChainType, ServerChainType, Config) ->
+    make_ec_cert_chains(UserConf, ClientChainType, ServerChainType, Config, ?DEFAULT_CURVE).
+%%
+make_ec_cert_chains(UserConf, ClientChainType, ServerChainType, Config, Curve) ->
     ClientChain = proplists:get_value(client_chain, UserConf, default_cert_chain_conf()),
     ServerChain = proplists:get_value(server_chain, UserConf, default_cert_chain_conf()),
-    CertChainConf = gen_conf(ClientChainType, ServerChainType, ClientChain, ServerChain),
+    CertChainConf = gen_conf(ClientChainType, ServerChainType, ClientChain, ServerChain, Curve),
     ClientFileBase = filename:join([proplists:get_value(priv_dir, Config), atom_to_list(ClientChainType)]),
     ServerFileBase = filename:join([proplists:get_value(priv_dir, Config), atom_to_list(ServerChainType)]),
     GenCertData = public_key:pkix_test_data(CertChainConf),
@@ -635,7 +652,11 @@ default_cert_chain_conf() ->
     %% Use only default options
     [[],[],[]].
 
-gen_conf(mix, mix, UserClient, UserServer) ->
+
+gen_conf(ClientChainType, ServerChainType, UserClient, UserServer) ->
+    gen_conf(ClientChainType, ServerChainType, UserClient, UserServer, ?DEFAULT_CURVE).
+%%
+gen_conf(mix, mix, UserClient, UserServer, _) ->
     ClientTag = conf_tag("client"),
     ServerTag = conf_tag("server"),
 
@@ -646,12 +667,12 @@ gen_conf(mix, mix, UserClient, UserServer) ->
     ServerConf = merge_chain_spec(UserServer, DefaultServer, []),
     
     new_format([{ClientTag, ClientConf}, {ServerTag, ServerConf}]);
-gen_conf(ClientChainType, ServerChainType, UserClient, UserServer) ->
+gen_conf(ClientChainType, ServerChainType, UserClient, UserServer, Curve) ->
     ClientTag = conf_tag("client"),
     ServerTag = conf_tag("server"),
 
-    DefaultClient = chain_spec(client, ClientChainType), 
-    DefaultServer = chain_spec(server, ServerChainType),
+    DefaultClient = chain_spec(client, ClientChainType, Curve),
+    DefaultServer = chain_spec(server, ServerChainType, Curve),
     
     ClientConf = merge_chain_spec(UserClient, DefaultClient, []),
     ServerConf = merge_chain_spec(UserServer, DefaultServer, []),
@@ -673,43 +694,43 @@ proplist_to_map([Head | Rest]) ->
 conf_tag(Role) ->
     list_to_atom(Role ++ "_chain").
 
-chain_spec(_Role, ecdh_rsa) ->
+chain_spec(_Role, ecdh_rsa, Curve) ->
     Digest = {digest, appropriate_sha(crypto:supports())},
-    CurveOid = hd(tls_v1:ecc_curves(0)),
+    CurveOid = pubkey_cert_records:namedCurves(Curve),
      [[Digest, {key, {namedCurve, CurveOid}}],
       [Digest, {key, hardcode_rsa_key(1)}],
       [Digest, {key, {namedCurve, CurveOid}}]];
 
-chain_spec(_Role, ecdhe_ecdsa) ->
+chain_spec(_Role, ecdhe_ecdsa, Curve) ->
     Digest = {digest, appropriate_sha(crypto:supports())},
-    CurveOid = hd(tls_v1:ecc_curves(0)),
+    CurveOid = pubkey_cert_records:namedCurves(Curve),
     [[Digest, {key, {namedCurve, CurveOid}}],
      [Digest, {key, {namedCurve, CurveOid}}],
      [Digest, {key, {namedCurve, CurveOid}}]];
 
-chain_spec(_Role, ecdh_ecdsa) ->
+chain_spec(_Role, ecdh_ecdsa, Curve) ->
     Digest = {digest, appropriate_sha(crypto:supports())},
-    CurveOid = hd(tls_v1:ecc_curves(0)),
+    CurveOid = pubkey_cert_records:namedCurves(Curve),
     [[Digest, {key, {namedCurve, CurveOid}}],
      [Digest, {key, {namedCurve, CurveOid}}],
      [Digest, {key, {namedCurve, CurveOid}}]];
-chain_spec(_Role, ecdhe_rsa) ->
+chain_spec(_Role, ecdhe_rsa, _) ->
     Digest = {digest, appropriate_sha(crypto:supports())},
     [[Digest, {key, hardcode_rsa_key(1)}],
      [Digest, {key, hardcode_rsa_key(2)}],
      [Digest, {key, hardcode_rsa_key(3)}]];
-chain_spec(_Role, ecdsa) ->
+chain_spec(_Role, ecdsa, Curve) ->
     Digest = {digest, appropriate_sha(crypto:supports())},
-    CurveOid = hd(tls_v1:ecc_curves(0)),
+    CurveOid = pubkey_cert_records:namedCurves(Curve),
     [[Digest, {key, {namedCurve, CurveOid}}],
      [Digest, {key, {namedCurve, CurveOid}}],
      [Digest, {key, {namedCurve, CurveOid}}]];
-chain_spec(_Role, rsa) ->
+chain_spec(_Role, rsa, _) ->
     Digest = {digest, appropriate_sha(crypto:supports())},
     [[Digest, {key, hardcode_rsa_key(1)}],
                                       [Digest, {key, hardcode_rsa_key(2)}],
                                       [Digest, {key, hardcode_rsa_key(3)}]];
-chain_spec(_Role, dsa) ->
+chain_spec(_Role, dsa, _) ->
     Digest = {digest, appropriate_sha(crypto:supports())},
     [[Digest, {key, hardcode_dsa_key(1)}],
      [Digest, {key, hardcode_dsa_key(2)}],
@@ -742,7 +763,7 @@ merge_spec(User, Default, [Conf | Rest], Acc) ->
 make_mix_cert(Config) ->
     Ext = x509_test:extensions([{key_usage, [digitalSignature]}]),
     Digest = {digest, appropriate_sha(crypto:supports())},
-    CurveOid = hd(tls_v1:ecc_curves(0)),
+    CurveOid = pubkey_cert_records:namedCurves(?DEFAULT_CURVE),
     Mix = proplists:get_value(mix, Config, peer_ecc),
     ClientChainType =ServerChainType = mix,
     {ClientChain, ServerChain} = mix(Mix, Digest, CurveOid, Ext),
@@ -825,7 +846,8 @@ make_rsa_cert(Config) ->
 	    Config
     end.
 appropriate_sha(CryptoSupport) ->
-    case proplists:get_bool(sha256, CryptoSupport) of
+    Hashes = proplists:get_value(hashs, CryptoSupport),
+    case lists:member(sha256, Hashes) of
 	true ->
 	    sha256;
 	false ->
@@ -863,14 +885,14 @@ make_ecdh_rsa_cert(Config) ->
     end.
 
 start_upgrade_server(Args) ->
-    Result = spawn_link(?MODULE, run_upgrade_server, [Args]),
+    Node = proplists:get_value(node, Args),
+    Result = spawn_link(Node, ?MODULE, run_upgrade_server, [Args]),
     receive
 	{listen, up} ->
 	    Result
     end.
 
 run_upgrade_server(Opts) ->
-    Node = proplists:get_value(node, Opts),
     Port = proplists:get_value(port, Opts),
     TimeOut = proplists:get_value(timeout, Opts, infinity),
     TcpOptions = proplists:get_value(tcp_options, Opts),
@@ -878,43 +900,41 @@ run_upgrade_server(Opts) ->
     Pid = proplists:get_value(from, Opts),
 
     ct:log("~p:~p~ngen_tcp:listen(~p, ~p)~n", [?MODULE,?LINE, Port, TcpOptions]),
-    {ok, ListenSocket} = rpc:call(Node, gen_tcp, listen, [Port, TcpOptions]),
+    {ok, ListenSocket} = gen_tcp:listen(Port, TcpOptions),
     Pid ! {listen, up},
     send_selected_port(Pid, Port, ListenSocket),
     ct:log("~p:~p~ngen_tcp:accept(~p)~n", [?MODULE,?LINE, ListenSocket]),
-    {ok, AcceptSocket} = rpc:call(Node, gen_tcp, accept, [ListenSocket]),
+    {ok, AcceptSocket} = gen_tcp:accept(ListenSocket),
 
     try
 	{ok, SslAcceptSocket} = case TimeOut of
 				    infinity ->
-					ct:log("~p:~p~nssl:ssl_accept(~p, ~p)~n",
+					ct:log("~p:~p~nssl:handshake(~p, ~p)~n",
 							   [?MODULE,?LINE, AcceptSocket, SslOptions]),
-					rpc:call(Node, ssl, ssl_accept,
-						 [AcceptSocket, SslOptions]);
+					ssl:handshake(AcceptSocket, SslOptions);
 				    _ ->
-					ct:log("~p:~p~nssl:ssl_accept(~p, ~p, ~p)~n",
+					ct:log("~p:~p~nssl:handshake(~p, ~p, ~p)~n",
 							   [?MODULE,?LINE, AcceptSocket, SslOptions, TimeOut]),
-					rpc:call(Node, ssl, ssl_accept,
-						 [AcceptSocket, SslOptions, TimeOut])
+					ssl:handshake(AcceptSocket, SslOptions, TimeOut)
 				end,
 	{Module, Function, Args} = proplists:get_value(mfa, Opts),
-	Msg = rpc:call(Node, Module, Function, [SslAcceptSocket | Args]),
+	Msg = apply(Module, Function, [SslAcceptSocket | Args]),
 	ct:log("~p:~p~nUpgrade Server Msg: ~p ~n", [?MODULE,?LINE, Msg]),
 	Pid ! {self(), Msg},
 	receive
 	    close ->
 		ct:log("~p:~p~nUpgrade Server closing~n", [?MODULE,?LINE]),
-		rpc:call(Node, ssl, close, [SslAcceptSocket])
+		ssl:close(SslAcceptSocket)
 	end
     catch error:{badmatch, Error} ->
 	    Pid ! {self(), Error}
     end.
 
 start_upgrade_client(Args) ->
-    spawn_link(?MODULE, run_upgrade_client, [Args]).
+    Node = proplists:get_value(node, Args),
+    spawn_link(Node, ?MODULE, run_upgrade_client, [Args]).
 
 run_upgrade_client(Opts) ->
-    Node = proplists:get_value(node, Opts),
     Host = proplists:get_value(host, Opts),
     Port = proplists:get_value(port, Opts),
     Pid = proplists:get_value(from, Opts),
@@ -923,34 +943,34 @@ run_upgrade_client(Opts) ->
     
     ct:log("~p:~p~ngen_tcp:connect(~p, ~p, ~p)~n",
 		       [?MODULE,?LINE, Host, Port, TcpOptions]),
-    {ok, Socket} = rpc:call(Node, gen_tcp, connect, [Host, Port, TcpOptions]),
+    {ok, Socket} = gen_tcp:connect(Host, Port, TcpOptions),
 
     send_selected_port(Pid, Port, Socket),
 
     ct:log("~p:~p~nssl:connect(~p, ~p)~n", [?MODULE,?LINE, Socket, SslOptions]),
-    {ok, SslSocket} = rpc:call(Node, ssl, connect, [Socket, SslOptions]),
+    {ok, SslSocket} = ssl:connect(Socket, SslOptions),
 
     {Module, Function, Args} = proplists:get_value(mfa, Opts),
     ct:log("~p:~p~napply(~p, ~p, ~p)~n",
 		       [?MODULE,?LINE, Module, Function, [SslSocket | Args]]),
-    Msg = rpc:call(Node, Module, Function, [SslSocket | Args]),
+    Msg = apply(Module, Function, [SslSocket | Args]),
     ct:log("~p:~p~nUpgrade Client Msg: ~p ~n", [?MODULE,?LINE, Msg]),
     Pid ! {self(), Msg},
     receive 
 	close ->
 	    ct:log("~p:~p~nUpgrade Client closing~n", [?MODULE,?LINE]),
-	    rpc:call(Node, ssl, close, [SslSocket])
+	    ssl:close(SslSocket)
     end.
 
 start_upgrade_server_error(Args) ->
-    Result = spawn_link(?MODULE, run_upgrade_server_error, [Args]),
+    Node = proplists:get_value(node, Args),
+    Result = spawn_link(Node,?MODULE, run_upgrade_server_error, [Args]),
     receive
 	{listen, up} ->
 	    Result
     end.
 
 run_upgrade_server_error(Opts) ->
-    Node = proplists:get_value(node, Opts),
     Port = proplists:get_value(port, Opts),
     TimeOut = proplists:get_value(timeout, Opts, infinity),
     TcpOptions = proplists:get_value(tcp_options, Opts),
@@ -958,22 +978,20 @@ run_upgrade_server_error(Opts) ->
     Pid = proplists:get_value(from, Opts),
 
     ct:log("~p:~p~ngen_tcp:listen(~p, ~p)~n", [?MODULE,?LINE, Port, TcpOptions]),
-    {ok, ListenSocket} = rpc:call(Node, gen_tcp, listen, [Port, TcpOptions]),
+    {ok, ListenSocket} = gen_tcp:listen(Port, TcpOptions),
     Pid ! {listen, up},
     send_selected_port(Pid, Port, ListenSocket),
     ct:log("~p:~p~ngen_tcp:accept(~p)~n", [?MODULE,?LINE, ListenSocket]),
-    {ok, AcceptSocket} = rpc:call(Node, gen_tcp, accept, [ListenSocket]),
+    {ok, AcceptSocket} = gen_tcp:accept(ListenSocket),
     Error = case TimeOut of
 		infinity ->
-		    ct:log("~p:~p~nssl:ssl_accept(~p, ~p)~n",
+		    ct:log("~p:~p~nssl:handshake(~p, ~p)~n",
 				       [?MODULE,?LINE, AcceptSocket, SslOptions]),
-		    rpc:call(Node, ssl, ssl_accept,
-			     [AcceptSocket, SslOptions]);
+		    ssl:handshake(AcceptSocket, SslOptions);
 		_ ->
-		    ct:log("~p:~p~nssl:ssl_accept(~p, ~p, ~p)~n",
+		    ct:log("~p:~p~nssl:ssl_handshake(~p, ~p, ~p)~n",
 				       [?MODULE,?LINE, AcceptSocket, SslOptions, TimeOut]),
-		    rpc:call(Node, ssl, ssl_accept,
-			     [AcceptSocket, SslOptions, TimeOut])
+		    ssl:handshake(AcceptSocket, SslOptions, TimeOut)
 	    end,
     Pid ! {self(), Error}.
 
@@ -985,32 +1003,31 @@ start_server_error(Args) ->
     end.
 
 run_server_error(Opts) ->
-    Node = proplists:get_value(node, Opts),
     Port = proplists:get_value(port, Opts),
     Options = proplists:get_value(options, Opts),
     Pid = proplists:get_value(from, Opts),
     Transport =  proplists:get_value(transport, Opts, ssl),
     ct:log("~p:~p~nssl:listen(~p, ~p)~n", [?MODULE,?LINE, Port, Options]),
-    case rpc:call(Node, Transport, listen, [Port, Options]) of
+    case Transport:listen(Port, Options) of
 	{ok, #sslsocket{} = ListenSocket} ->
 	    %% To make sure error_client will
 	    %% get {error, closed} and not {error, connection_refused}
 	    Pid ! {listen, up},
 	    send_selected_port(Pid, Port, ListenSocket),
 	    ct:log("~p:~p~nssl:transport_accept(~p)~n", [?MODULE,?LINE, ListenSocket]),
-	    case rpc:call(Node, Transport, transport_accept, [ListenSocket]) of
+	    case Transport:transport_accept(ListenSocket) of
 		{error, _} = Error ->
 		    Pid ! {self(), Error};
 		{ok, AcceptSocket} ->
 		    ct:log("~p:~p~nssl:ssl_accept(~p)~n", [?MODULE,?LINE, AcceptSocket]),
-		    Error = rpc:call(Node, ssl, ssl_accept, [AcceptSocket]),
+		    Error = ssl:handshake(AcceptSocket),
 		    Pid ! {self(), Error}
 	    end;
 	{ok, ListenSocket} ->
 	    Pid ! {listen, up},
 	    send_selected_port(Pid, Port, ListenSocket),
 	    ct:log("~p:~p~n~p:accept(~p)~n", [?MODULE,?LINE, Transport, ListenSocket]),
-	     case rpc:call(Node, Transport, accept, [ListenSocket]) of
+	     case Transport:accept(ListenSocket) of
 		{error, _} = Error ->
 		     Pid ! {self(), Error}
 	     end;
@@ -1022,17 +1039,17 @@ run_server_error(Opts) ->
     end.
 
 start_client_error(Args) ->
-    spawn_link(?MODULE, run_client_error, [Args]).
+    Node = proplists:get_value(node, Args),
+    spawn_link(Node, ?MODULE, run_client_error, [Args]).
 
 run_client_error(Opts) ->
-    Node = proplists:get_value(node, Opts),
     Host = proplists:get_value(host, Opts),
     Port = proplists:get_value(port, Opts),
     Pid = proplists:get_value(from, Opts),
     Transport = proplists:get_value(transport, Opts, ssl),
     Options = proplists:get_value(options, Opts),
     ct:log("~p:~p~nssl:connect(~p, ~p, ~p)~n", [?MODULE,?LINE, Host, Port, Options]),
-    Error = rpc:call(Node, Transport, connect, [Host, Port, Options]),
+    Error = Transport:connect(Host, Port, Options),
     Pid ! {self(), Error}.
 
 accepters(N) ->
@@ -1064,8 +1081,36 @@ ecc_test(Expect, COpts, SOpts, CECCOpts, SECCOpts, Config) ->
 ecc_test_error(COpts, SOpts, CECCOpts, SECCOpts, Config) ->
     {Server, Port} = start_server_ecc_error(erlang, SOpts, SECCOpts, Config),
     Client = start_client_ecc_error(erlang, Port, COpts, CECCOpts, Config),
-    Error = {error, {tls_alert, "insufficient security"}},
-    check_result(Server, Error, Client, Error).
+    check_server_alert(Server, Client, insufficient_security).
+
+start_basic_client(openssl, Version, Port, ClientOpts) ->
+    Cert = proplists:get_value(certfile, ClientOpts),
+    Key = proplists:get_value(keyfile, ClientOpts),
+    CA = proplists:get_value(cacertfile, ClientOpts),
+    Groups0 = proplists:get_value(groups, ClientOpts),
+    Exe = "openssl",
+    Args0 = ["s_client", "-verify", "2", "-port", integer_to_list(Port),
+	    ssl_test_lib:version_flag(Version),
+	    "-CAfile", CA, "-host", "localhost", "-msg", "-debug"],
+    Args1 =
+       case Groups0 of
+           undefined ->
+               Args0;
+           G ->
+               Args0 ++ ["-groups", G]
+       end,
+    Args =
+       case {Cert, Key} of
+           {C, K} when C =:= undefined orelse
+                       K =:= undefined ->
+               Args1;
+           {C, K} ->
+               Args1 ++ ["-cert", C, "-key", K]
+       end,
+
+    OpenSslPort = ssl_test_lib:portable_open_port(Exe, Args),
+    true = port_command(OpenSslPort, "Hello world"),
+    OpenSslPort.
 
 start_client(openssl, Port, ClientOpts, Config) ->
     Cert = proplists:get_value(certfile, ClientOpts),
@@ -1073,11 +1118,11 @@ start_client(openssl, Port, ClientOpts, Config) ->
     CA = proplists:get_value(cacertfile, ClientOpts),
     Version = ssl_test_lib:protocol_version(Config),
     Exe = "openssl",
-    Args = ["s_client", "-verify", "2", "-port", integer_to_list(Port),
+    Args0 = ["s_client", "-verify", "2", "-port", integer_to_list(Port),
 	    ssl_test_lib:version_flag(Version),
 	    "-cert", Cert, "-CAfile", CA,
 	    "-key", Key, "-host","localhost", "-msg", "-debug"],
-
+    Args = maybe_force_ipv4(Args0),
     OpenSslPort = ssl_test_lib:portable_open_port(Exe, Args), 
     true = port_command(OpenSslPort, "Hello world"),
     OpenSslPort;
@@ -1091,6 +1136,18 @@ start_client(erlang, Port, ClientOpts, Config) ->
 			       {mfa, {ssl_test_lib, check_key_exchange_send_active, [KeyEx]}},
 			       {options, [{verify, verify_peer} | ClientOpts]}]).
 
+%% Workaround for running tests on machines where openssl
+%% s_client would use an IPv6 address with localhost. As
+%% this test suite and the ssl application is not prepared
+%% for that we have to force s_client to use IPv4 if
+%% OpenSSL supports IPv6.
+maybe_force_ipv4(Args0) ->
+    case is_ipv6_supported() of
+        true ->
+            Args0 ++ ["-4"];
+        false ->
+            Args0
+    end.
 
 start_client_ecc(erlang, Port, ClientOpts, Expect, ECCOpts, Config) ->
     {ClientNode, _, Hostname} = ssl_test_lib:run_where(Config),
@@ -1460,20 +1517,14 @@ cipher_result(Socket, Result) ->
     ct:log("~p:~p~nSuccessfull connect: ~p~n", [?MODULE,?LINE, Result]),
     %% Importante to send two packets here
     %% to properly test "cipher state" handling
-    ssl:send(Socket, "Hello\n"),
-    receive 
-	{ssl, Socket, "H"} ->
-	    ssl:send(Socket, " world\n"),
-	    receive_rizzo_duong_beast();
-	{ssl, Socket, "Hello\n"} ->
-	    ssl:send(Socket, " world\n"),
-	    receive
-		{ssl, Socket, " world\n"} ->
-		    ok
-	    end;       
-	Other ->
-	    {unexpected, Other}
-    end.
+    Hello = "Hello\n",
+    World = " world\n",
+    ssl:send(Socket, Hello),
+    ct:sleep(500),
+    ssl:send(Socket, World),
+    Expected = Hello ++ World,
+    Expected = active_recv(Socket, length(Expected)),
+    ok.
 
 session_info_result(Socket) ->
     {ok, Info} = ssl:connection_information(Socket,  [session_id, cipher_suite]),
@@ -1546,7 +1597,12 @@ init_tls_version(Version, Config) ->
 
 clean_tls_version(Config) ->
     proplists:delete(protocol_opts, proplists:delete(protocol, Config)).
-    
+
+sufficient_crypto_support(Version)
+  when Version == 'tlsv1.3' ->
+    CryptoSupport = crypto:supports(),
+    lists:member(rsa_pkcs1_pss_padding, proplists:get_value(rsa_opts, CryptoSupport)) andalso
+    lists:member(x448, proplists:get_value(curves, CryptoSupport));
 sufficient_crypto_support(Version)
   when Version == 'tlsv1.2'; Version == 'dtlsv1.2' ->
     CryptoSupport = crypto:supports(),
@@ -1592,34 +1648,81 @@ v_1_2_check(ecdh_rsa, ecdh_ecdsa) ->
 v_1_2_check(_, _) ->
     false.
 
-send_recv_result_active(Socket) ->
-    ssl:send(Socket, "Hello world"),
-    receive
-	{ssl, Socket, "H"} ->
-	    receive
-		{ssl, Socket, "ello world"} ->
-		    ok
-	    end;
-	{ssl, Socket, "Hello world"} ->
-	    ok
-    end.
-
 send_recv_result(Socket) ->
-    ssl:send(Socket, "Hello world"),
-    {ok,"Hello world"} = ssl:recv(Socket, 11),
+    Data =  "Hello world",
+    ssl:send(Socket, Data),
+    {ok, Data} = ssl:recv(Socket, length(Data)),
+    ok.
+
+send_recv_result_active(Socket) ->
+    Data =  "Hello world",
+    ssl:send(Socket, Data),
+    Data = active_recv(Socket, length(Data)),
     ok.
 
 send_recv_result_active_once(Socket) ->
-    ssl:send(Socket, "Hello world"),
-    receive
-	{ssl, Socket, "H"} ->
-	    ssl:setopts(Socket, [{active, once}]),
-	    receive
-		{ssl, Socket, "ello world"} ->
-		    ok
-	    end;
-	{ssl, Socket, "Hello world"} ->
-	    ok
+    Data = "Hello world",
+    ssl:send(Socket, Data),
+    active_once_recv_list(Socket, length(Data)).
+
+active_recv(Socket, N) ->
+    active_recv(Socket, N, []).
+
+active_recv(_Socket, 0, Acc) ->
+    Acc;
+active_recv(Socket, N, Acc) ->
+    receive 
+	{ssl, Socket, Bytes} ->
+            active_recv(Socket, N-length(Bytes),  Acc ++ Bytes)
+    end.
+
+active_once_recv(_Socket, 0) ->
+    ok;
+active_once_recv(Socket, N) ->
+    receive 
+	{ssl, Socket, Bytes} ->
+            ssl:setopts(Socket, [{active, once}]),
+            active_once_recv(Socket, N-byte_size(Bytes))
+    end.
+
+active_once_recv_list(_Socket, 0) ->
+    ok;
+active_once_recv_list(Socket, N) ->
+    receive 
+	{ssl, Socket, Bytes} ->
+            ssl:setopts(Socket, [{active, once}]),
+            active_once_recv_list(Socket, N-length(Bytes))
+    end.
+recv_disregard(_Socket, 0) ->
+    ok;
+recv_disregard(Socket, N) ->
+    {ok, Bytes} = ssl:recv(Socket, 0),
+    recv_disregard(Socket, N-byte_size(Bytes)).
+
+active_disregard(_Socket, 0) ->
+    ok;
+active_disregard(Socket, N) ->
+    receive 
+	{ssl, Socket, Bytes} ->
+            active_disregard(Socket, N-byte_size(Bytes))
+    end.
+active_once_disregard(_Socket, 0) ->
+    ok;
+active_once_disregard(Socket, N) ->
+    receive 
+	{ssl, Socket, Bytes} ->
+            ssl:setopts(Socket, [{active, once}]),
+            active_once_disregard(Socket, N-byte_size(Bytes))
+    end.
+
+is_ipv6_supported() ->
+    case os:cmd("openssl version") of
+        "OpenSSL 0.9.8" ++ _ -> % Does not support IPv6
+            false;
+        "OpenSSL 1.0" ++ _ ->   % Does not support IPv6
+            false;
+        _ ->
+            true
     end.
 
 is_sane_ecc(openssl) ->
@@ -1653,6 +1756,15 @@ is_sane_ecc(crypto) ->
 is_sane_ecc(_) ->
     sufficient_crypto_support(cipher_ec).
 
+is_sane_oppenssl_sni() ->
+    [{_,_, Bin}]  = crypto:info_lib(), 
+    case binary_to_list(Bin) of
+	"OpenSSL 0.9" ++ _ -> % Does not support ECC
+	    false;
+	_ ->
+	    true
+    end.
+
 is_fips(openssl) ->
     VersionStr = os:cmd("openssl version"),
     case re:split(VersionStr, "fips") of
@@ -1817,6 +1929,8 @@ version_flag('tlsv1.1') ->
     "-tls1_1";
 version_flag('tlsv1.2') ->
     "-tls1_2";
+version_flag('tlsv1.3') ->
+    "-tls1_3";
 version_flag(sslv3) ->
     "-ssl3";
 version_flag(sslv2) ->
@@ -2159,3 +2273,104 @@ server_msg(Server, ServerMsg) ->
 	Unexpected ->
 	    ct:fail(Unexpected)
     end.
+
+session_id(Socket) ->
+    {ok, [{session_id, ID}]} = ssl:connection_information(Socket, [session_id]),
+    ID.
+    
+reuse_session(ClientOpts, ServerOpts, Config) ->
+    {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
+    
+    Server0 =
+	ssl_test_lib:start_server([{node, ServerNode}, {port, 0},
+				   {from, self()},
+				   {mfa, {ssl_test_lib, no_result, []}},
+				   {tcp_options, [{active, false}]},
+				   {options, ServerOpts}]),
+    Port0 = ssl_test_lib:inet_port(Server0),
+    
+    Client0 = ssl_test_lib:start_client([{node, ClientNode},
+                                         {port, Port0}, {host, Hostname},
+                                         {mfa, {ssl_test_lib, session_id, []}},
+                                         {from, self()},  {options, [{reuse_sessions, save} | ClientOpts]}]),
+    Server0 ! listen,
+    
+    Client1 = ssl_test_lib:start_client([{node, ClientNode},
+                                         {port, Port0}, {host, Hostname},
+                                         {mfa, {ssl_test_lib, session_id, []}},
+                                         {from, self()},  {options, ClientOpts}]),    
+
+    SID = receive
+              {Client0, Id0} ->
+                  Id0
+          end,
+       
+    receive
+        {Client1, SID} ->
+            ok
+    after ?SLEEP ->
+              ct:fail(session_not_reused)
+    end,
+  
+    Server0 ! listen,
+    
+    Client2 =
+        ssl_test_lib:start_client([{node, ClientNode},
+                                   {port, Port0}, {host, Hostname},
+                                   {mfa, {ssl_test_lib, session_id, []}},
+                                   {from, self()},  {options, [{reuse_sessions, false}
+         					  | ClientOpts]}]),   
+    receive
+         {Client2, SID} ->
+            ct:fail(session_reused_when_session_reuse_disabled_by_client);
+         {Client2, _} ->
+            ok
+    end,
+    
+    ssl_test_lib:close(Server0),
+    ssl_test_lib:close(Client0),
+    ssl_test_lib:close(Client1),
+    ssl_test_lib:close(Client2),
+    
+    Server1 =
+	ssl_test_lib:start_server([{node, ServerNode}, {port, 0},
+				   {from, self()},
+				   {mfa, {ssl_test_lib, no_result, []}},
+				   {tcp_options, [{active, false}]},
+				   {options, [{reuse_sessions, false} |ServerOpts]}]),
+    Port1 = ssl_test_lib:inet_port(Server1),
+    
+    Client3 = ssl_test_lib:start_client([{node, ClientNode},
+                                         {port, Port1}, {host, Hostname},
+                                         {mfa, {ssl_test_lib, session_id, []}},
+                                         {from, self()},  {options, [{reuse_sessions, save} | ClientOpts]}]),
+    SID1 = receive
+               {Client3, Id3} ->
+                   Id3
+           end,
+
+    Server1 ! listen,
+    
+    Client4 =
+        ssl_test_lib:start_client([{node, ClientNode},
+                                   {port, Port1}, {host, Hostname},
+                                   {mfa, {ssl_test_lib, session_id, []}},
+                                   {from, self()},  {options, ClientOpts}]),   
+   
+    receive
+        {Client4, SID1} ->
+            ct:fail(session_reused_when_session_reuse_disabled_by_server);
+        {Client4, _} ->
+            ok
+    end,
+    
+    ssl_test_lib:close(Server1),
+    ssl_test_lib:close(Client3),
+    ssl_test_lib:close(Client4).
+
+user_lookup(psk, _Identity, UserState) ->
+    {ok, UserState};
+user_lookup(srp, Username, _UserState) ->
+    Salt = ssl_cipher:random_bytes(16),
+    UserPassHash = crypto:hash(sha, [Salt, crypto:hash(sha, [Username, <<$:>>, <<"secret">>])]),
+    {ok, {srp_1024, Salt, UserPassHash}}.
diff --git a/lib/ssl/test/ssl_to_openssl_SUITE.erl b/lib/ssl/test/ssl_to_openssl_SUITE.erl
index 5a38f5f9c1..1a9a5b712d 100644
--- a/lib/ssl/test/ssl_to_openssl_SUITE.erl
+++ b/lib/ssl/test/ssl_to_openssl_SUITE.erl
@@ -39,16 +39,14 @@
 all() -> 
     case ssl_test_lib:openssl_sane_dtls() of 
         true ->
-            [{group, basic},
-             {group, 'tlsv1.2'},
+            [{group, 'tlsv1.2'},
              {group, 'tlsv1.1'},
              {group, 'tlsv1'},
              {group, 'sslv3'},
              {group, 'dtlsv1.2'},
              {group, 'dtlsv1'}];
         false ->
-            [{group, basic},
-             {group, 'tlsv1.2'},
+            [{group, 'tlsv1.2'},
              {group, 'tlsv1.1'},
              {group, 'tlsv1'},
              {group, 'sslv3'}]
@@ -57,8 +55,7 @@ all() ->
 groups() ->
      case ssl_test_lib:openssl_sane_dtls() of 
          true ->
-             [{basic, [], basic_tests()},
-              {'tlsv1.2', [], all_versions_tests() ++ alpn_tests() ++ npn_tests() ++ sni_server_tests()},
+             [{'tlsv1.2', [], all_versions_tests() ++ alpn_tests() ++ npn_tests() ++ sni_server_tests()},
               {'tlsv1.1', [], all_versions_tests() ++ alpn_tests() ++ npn_tests() ++ sni_server_tests()},
               {'tlsv1', [], all_versions_tests()++ alpn_tests() ++ npn_tests() ++ sni_server_tests()},
               {'sslv3', [], all_versions_tests()},
@@ -66,20 +63,13 @@ groups() ->
               {'dtlsv1', [], dtls_all_versions_tests()}
              ];
         false ->
-             [{basic, [], basic_tests()},
-              {'tlsv1.2', [], all_versions_tests() ++ alpn_tests() ++ npn_tests() ++ sni_server_tests()},
+             [{'tlsv1.2', [], all_versions_tests() ++ alpn_tests() ++ npn_tests() ++ sni_server_tests()},
               {'tlsv1.1', [], all_versions_tests() ++ alpn_tests() ++ npn_tests() ++ sni_server_tests()},
               {'tlsv1', [], all_versions_tests()++ alpn_tests() ++ npn_tests() ++ sni_server_tests()},
               {'sslv3', [], all_versions_tests()}
            ]
      end.
-  
-basic_tests() ->
-    [basic_erlang_client_openssl_server,
-     basic_erlang_server_openssl_client,
-     expired_session
-    ].
-
+ 
 all_versions_tests() ->
     [
      erlang_client_openssl_server,
@@ -91,6 +81,7 @@ all_versions_tests() ->
      erlang_server_openssl_client_anon_with_cert,
      erlang_server_openssl_client_reuse_session,
      erlang_client_openssl_server_renegotiate,
+     erlang_client_openssl_server_renegotiate_after_client_data,
      erlang_client_openssl_server_nowrap_seqnum,
      erlang_server_openssl_client_nowrap_seqnum,
      erlang_client_openssl_server_no_server_ca_cert,
@@ -259,8 +250,9 @@ special_init(TestCase, Config) when
     Config;
 special_init(TestCase, Config)
   when TestCase == erlang_client_openssl_server_renegotiate;
-        TestCase == erlang_client_openssl_server_nowrap_seqnum;
-       TestCase == erlang_server_openssl_client_nowrap_seqnum
+       TestCase == erlang_client_openssl_server_nowrap_seqnum;
+       TestCase == erlang_server_openssl_client_nowrap_seqnum;
+       TestCase == erlang_client_openssl_server_renegotiate_after_client_data
         ->
     {ok, Version} = application:get_env(ssl, protocol_version),
     check_sane_openssl_renegotaite(Config, Version);
@@ -355,85 +347,7 @@ end_per_testcase(_, Config) ->
 %%--------------------------------------------------------------------
 %% Test Cases --------------------------------------------------------
 %%--------------------------------------------------------------------
-basic_erlang_client_openssl_server() ->
-    [{doc,"Test erlang client with openssl server"}].
-basic_erlang_client_openssl_server(Config) when is_list(Config) ->
-    process_flag(trap_exit, true),
-    ServerOpts = ssl_test_lib:ssl_options(server_rsa_opts, Config),
-    ClientOpts = ssl_test_lib:ssl_options(client_rsa_opts, Config),
-
-    {ClientNode, _, Hostname} = ssl_test_lib:run_where(Config),
-    
-    Data = "From openssl to erlang",
-    
-    Port = ssl_test_lib:inet_port(node()),
-    CertFile = proplists:get_value(certfile, ServerOpts),
-    KeyFile = proplists:get_value(keyfile, ServerOpts),
-
-    Exe = "openssl",
-     Args = ["s_server", "-accept", integer_to_list(Port),
-             "-cert", CertFile, "-key", KeyFile],
-
-    OpensslPort = ssl_test_lib:portable_open_port(Exe, Args), 
-
-
-    ssl_test_lib:wait_for_openssl_server(Port, tls),
-
-    Client = ssl_test_lib:start_client([{node, ClientNode}, {port, Port}, 
-                                         {host, Hostname},
-                                        {from, self()},
-                                        {mfa, {?MODULE,
-                                               erlang_ssl_receive, [Data]}},
-                                         {options, ClientOpts}]),
-    true = port_command(OpensslPort, Data),
-    
-    ssl_test_lib:check_result(Client, ok),
-
-    %% Clean close down!   Server needs to be closed first !!
-    ssl_test_lib:close_port(OpensslPort),
-    ssl_test_lib:close(Client),
-    process_flag(trap_exit, false).
 
-%%--------------------------------------------------------------------    
-basic_erlang_server_openssl_client() ->
-    [{doc,"Test erlang server with openssl client"}].
-basic_erlang_server_openssl_client(Config) when is_list(Config) ->
-    process_flag(trap_exit, true),
-    ServerOpts = ssl_test_lib:ssl_options(server_rsa_opts, Config),
-
-    {_, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
-    
-    Data = "From openssl to erlang",
-    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0}, 
-                                        {from, self()},
-                                        {mfa, {?MODULE, erlang_ssl_receive, [Data]}},
-                                        {options,ServerOpts}]),
-
-    Port = ssl_test_lib:inet_port(Server),
-    
-    Exe = "openssl",
-    Args = case no_low_flag("-no_ssl2") of
-               [] ->
-                   ["s_client", "-connect", hostname_format(Hostname) ++
-                        ":" ++ integer_to_list(Port), no_low_flag("-no_ssl3")
-                    | workaround_openssl_s_clinent()];
-               Flag ->
-                   ["s_client", "-connect", hostname_format(Hostname) ++
-                        ":" ++ integer_to_list(Port), no_low_flag("-no_ssl3"), Flag
-                    | workaround_openssl_s_clinent()]
-           end, 
-    
-    OpenSslPort = ssl_test_lib:portable_open_port(Exe, Args), 
-    true = port_command(OpenSslPort, Data),
-    
-    ssl_test_lib:check_result(Server, ok),
-
-    %% Clean close down!   Server needs to be closed first !!
-    ssl_test_lib:close(Server),
-    ssl_test_lib:close_port(OpenSslPort),
-    process_flag(trap_exit, false).
-
-%%--------------------------------------------------------------------
 erlang_client_openssl_server() ->
     [{doc,"Test erlang client with openssl server"}].
 erlang_client_openssl_server(Config) when is_list(Config) ->
@@ -760,8 +674,8 @@ erlang_client_openssl_server_renegotiate() ->
     [{doc,"Test erlang client when openssl server issuses a renegotiate"}].
 erlang_client_openssl_server_renegotiate(Config) when is_list(Config) ->
     process_flag(trap_exit, true),
-    ServerOpts = ssl_test_lib:ssl_options(server_rsa_opts, Config),
-    ClientOpts = ssl_test_lib:ssl_options(client_rsa_opts, Config),
+    ServerOpts = ssl_test_lib:ssl_options(server_rsa_verify_opts, Config),
+    ClientOpts = ssl_test_lib:ssl_options(client_rsa_verify_opts, Config),
 
     {ClientNode, _, Hostname} = ssl_test_lib:run_where(Config),
     
@@ -770,12 +684,14 @@ erlang_client_openssl_server_renegotiate(Config) when is_list(Config) ->
 
     Port = ssl_test_lib:inet_port(node()),
     CertFile = proplists:get_value(certfile, ServerOpts),
+    CaCertFile = proplists:get_value(cacertfile, ServerOpts),
     KeyFile = proplists:get_value(keyfile, ServerOpts),
     Version = ssl_test_lib:protocol_version(Config),
 
     Exe = "openssl",
     Args = ["s_server", "-accept", integer_to_list(Port),  
             ssl_test_lib:version_flag(Version),
+            "-CAfile", CaCertFile,
             "-cert", CertFile, "-key", KeyFile, "-msg"],
     
     OpensslPort =  ssl_test_lib:portable_open_port(Exe, Args), 
@@ -800,6 +716,53 @@ erlang_client_openssl_server_renegotiate(Config) when is_list(Config) ->
     ssl_test_lib:close(Client),
      process_flag(trap_exit, false),
     ok.
+%%--------------------------------------------------------------------
+erlang_client_openssl_server_renegotiate_after_client_data() ->
+    [{doc,"Test erlang client when openssl server issuses a renegotiate after reading client data"}].
+erlang_client_openssl_server_renegotiate_after_client_data(Config) when is_list(Config) ->
+    process_flag(trap_exit, true),
+    ServerOpts = ssl_test_lib:ssl_options(server_rsa_verify_opts, Config),
+    ClientOpts = ssl_test_lib:ssl_options(client_rsa_verify_opts, Config),
+
+    {ClientNode, _, Hostname} = ssl_test_lib:run_where(Config),
+
+    ErlData = "From erlang to openssl",
+    OpenSslData = "From openssl to erlang",
+
+    Port = ssl_test_lib:inet_port(node()),
+    CaCertFile = proplists:get_value(cacertfile, ServerOpts),
+    CertFile = proplists:get_value(certfile, ServerOpts),
+    KeyFile = proplists:get_value(keyfile, ServerOpts),
+    Version = ssl_test_lib:protocol_version(Config),
+
+    Exe = "openssl",
+    Args = ["s_server", "-accept", integer_to_list(Port),
+            ssl_test_lib:version_flag(Version),
+            "-CAfile", CaCertFile,
+            "-cert", CertFile, "-key", KeyFile, "-msg"],
+
+    OpensslPort =  ssl_test_lib:portable_open_port(Exe, Args),
+
+    ssl_test_lib:wait_for_openssl_server(Port, proplists:get_value(protocol, Config)),
+
+    Client = ssl_test_lib:start_client([{node, ClientNode}, {port, Port},
+                                        {host, Hostname},
+                                        {from, self()},
+                                        {mfa, {?MODULE,
+                                               send_wait_send, [[ErlData, OpenSslData]]}},
+                                         {options, ClientOpts}]),
+
+    true = port_command(OpensslPort, ?OPENSSL_RENEGOTIATE),
+    ct:sleep(?SLEEP),
+    true = port_command(OpensslPort, OpenSslData),
+
+    ssl_test_lib:check_result(Client, ok),
+
+     %% Clean close down!   Server needs to be closed first !!
+    ssl_test_lib:close_port(OpensslPort),
+    ssl_test_lib:close(Client),
+     process_flag(trap_exit, false),
+    ok.
 
 %%--------------------------------------------------------------------
 
@@ -810,7 +773,7 @@ erlang_client_openssl_server_nowrap_seqnum() ->
       " to lower treashold substantially."}].
 erlang_client_openssl_server_nowrap_seqnum(Config) when is_list(Config) ->
     process_flag(trap_exit, true),
-    ServerOpts = ssl_test_lib:ssl_options(server_rsa_opts, Config),
+    ServerOpts = ssl_test_lib:ssl_options(server_rsa_verify_opts, Config),
     ClientOpts = ssl_test_lib:ssl_options(client_rsa_opts, Config),
 
     {ClientNode, _, Hostname} = ssl_test_lib:run_where(Config),
@@ -819,12 +782,14 @@ erlang_client_openssl_server_nowrap_seqnum(Config) when is_list(Config) ->
     N = 10,
 
     Port = ssl_test_lib:inet_port(node()),
+    CaCertFile = proplists:get_value(cacertfile, ServerOpts),
     CertFile = proplists:get_value(certfile, ServerOpts),
     KeyFile = proplists:get_value(keyfile, ServerOpts),
     Version = ssl_test_lib:protocol_version(Config),
     Exe = "openssl",
     Args = ["s_server", "-accept", integer_to_list(Port),
             ssl_test_lib:version_flag(Version),
+            "-CAfile", CaCertFile,
             "-cert", CertFile, "-key", KeyFile, "-msg"],
 
     OpensslPort = ssl_test_lib:portable_open_port(Exe, Args),
@@ -853,7 +818,7 @@ erlang_server_openssl_client_nowrap_seqnum() ->
       " to lower treashold substantially."}].
 erlang_server_openssl_client_nowrap_seqnum(Config) when is_list(Config) ->
     process_flag(trap_exit, true),
-    ServerOpts = ssl_test_lib:ssl_options(server_rsa_opts, Config),
+    ServerOpts = ssl_test_lib:ssl_options(server_rsa_verify_opts, Config),
 
     {_, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
 
@@ -1196,7 +1161,7 @@ ssl2_erlang_server_openssl_client(Config) when is_list(Config) ->
 
     ct:log("Ports ~p~n", [[erlang:port_info(P) || P <- erlang:ports()]]), 
     ssl_test_lib:consume_port_exit(OpenSslPort),
-    ssl_test_lib:check_result(Server, {error, {tls_alert, "bad record mac"}}),
+    ssl_test_lib:check_server_alert(Server, unexpected_message),
     process_flag(trap_exit, false).
 
 %%--------------------------------------------------------------------
@@ -1497,6 +1462,7 @@ send_and_hostname(SSLSocket) ->
     end.
 
 erlang_server_openssl_client_sni_test(Config, SNIHostname, ExpectedSNIHostname, ExpectedCN) ->
+    Version = ssl_test_lib:protocol_version(Config),
     ct:log("Start running handshake, Config: ~p, SNIHostname: ~p, ExpectedSNIHostname: ~p, ExpectedCN: ~p", [Config, SNIHostname, ExpectedSNIHostname, ExpectedCN]),
     ServerOptions = proplists:get_value(sni_server_opts, Config) ++ proplists:get_value(server_rsa_opts, Config),
     {_, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
@@ -1507,9 +1473,9 @@ erlang_server_openssl_client_sni_test(Config, SNIHostname, ExpectedSNIHostname,
     Exe = "openssl",
     ClientArgs = case SNIHostname of
 		     undefined ->
-			 openssl_client_args(ssl_test_lib:supports_ssl_tls_version(sslv2), Hostname,Port);
+			 openssl_client_args(Version, Hostname,Port);
 		     _ ->
-			 openssl_client_args(ssl_test_lib:supports_ssl_tls_version(sslv2), Hostname, Port, SNIHostname)
+			 openssl_client_args(Version, Hostname, Port, SNIHostname)
 		 end,       
     ClientPort = ssl_test_lib:portable_open_port(Exe, ClientArgs),  
   
@@ -1520,6 +1486,7 @@ erlang_server_openssl_client_sni_test(Config, SNIHostname, ExpectedSNIHostname,
 
 
 erlang_server_openssl_client_sni_test_sni_fun(Config, SNIHostname, ExpectedSNIHostname, ExpectedCN) ->
+    Version = ssl_test_lib:protocol_version(Config),
     ct:log("Start running handshake for sni_fun, Config: ~p, SNIHostname: ~p, ExpectedSNIHostname: ~p, ExpectedCN: ~p", [Config, SNIHostname, ExpectedSNIHostname, ExpectedCN]),
     [{sni_hosts, ServerSNIConf}] = proplists:get_value(sni_server_opts, Config),
     SNIFun = fun(Domain) -> proplists:get_value(Domain, ServerSNIConf, undefined) end,
@@ -1532,9 +1499,9 @@ erlang_server_openssl_client_sni_test_sni_fun(Config, SNIHostname, ExpectedSNIHo
     Exe = "openssl",
     ClientArgs = case SNIHostname of
 		     undefined ->
-			 openssl_client_args(ssl_test_lib:supports_ssl_tls_version(sslv2), Hostname,Port);
+			 openssl_client_args(Version, Hostname,Port);
 		     _ ->
-			 openssl_client_args(ssl_test_lib:supports_ssl_tls_version(sslv2), Hostname, Port, SNIHostname)
+			 openssl_client_args(Version, Hostname, Port, SNIHostname)
 		 end,       
 
     ClientPort = ssl_test_lib:portable_open_port(Exe, ClientArgs), 
@@ -1602,8 +1569,8 @@ cipher(CipherSuite, Version, Config, ClientOpts, ServerOpts) ->
 
 start_erlang_client_and_openssl_server_with_opts(Config, ErlangClientOpts, OpensslServerOpts, Data, Callback) ->
     process_flag(trap_exit, true),
-    ServerOpts = ssl_test_lib:ssl_options(server_rsa_opts, Config),
-    ClientOpts0 = ssl_test_lib:ssl_options(client_rsa_opts, Config),
+    ServerOpts = ssl_test_lib:ssl_options(server_rsa_verify_opts, Config),
+    ClientOpts0 = ssl_test_lib:ssl_options(client_rsa_verify_opts, Config),
     ClientOpts = ErlangClientOpts ++ ClientOpts0,
 
     {ClientNode, _, Hostname} = ssl_test_lib:run_where(Config),
@@ -1611,6 +1578,7 @@ start_erlang_client_and_openssl_server_with_opts(Config, ErlangClientOpts, Opens
     Data = "From openssl to erlang",
 
     Port = ssl_test_lib:inet_port(node()),
+    CaCertFile = proplists:get_value(cacertfile, ServerOpts),
     CertFile = proplists:get_value(certfile, ServerOpts),
     KeyFile = proplists:get_value(keyfile, ServerOpts),
     Version = ssl_test_lib:protocol_version(Config),
@@ -1620,10 +1588,12 @@ start_erlang_client_and_openssl_server_with_opts(Config, ErlangClientOpts, Opens
 	       [] -> 
 		   ["s_server", "-accept", 
 		    integer_to_list(Port), ssl_test_lib:version_flag(Version),
+                    "-CAfile", CaCertFile,
 		    "-cert", CertFile,"-key", KeyFile];
 	       [Opt, Value] ->
 		   ["s_server", Opt, Value, "-accept", 
 		    integer_to_list(Port), ssl_test_lib:version_flag(Version),
+                    "-CAfile", CaCertFile,
 		    "-cert", CertFile,"-key", KeyFile]
 	   end,
 		   
@@ -1648,8 +1618,8 @@ start_erlang_client_and_openssl_server_with_opts(Config, ErlangClientOpts, Opens
 
 start_erlang_client_and_openssl_server_for_alpn_negotiation(Config, Data, Callback) ->
     process_flag(trap_exit, true),
-    ServerOpts = proplists:get_value(server_rsa_opts, Config),
-    ClientOpts0 = proplists:get_value(client_rsa_opts, Config),
+    ServerOpts = proplists:get_value(server_rsa_verify_opts, Config),
+    ClientOpts0 = proplists:get_value(client_rsa_verify_opts, Config),
     ClientOpts = [{alpn_advertised_protocols, [<<"spdy/2">>]} | ClientOpts0],
 
     {ClientNode, _, Hostname} = ssl_test_lib:run_where(Config),
@@ -1657,12 +1627,14 @@ start_erlang_client_and_openssl_server_for_alpn_negotiation(Config, Data, Callba
     Data = "From openssl to erlang",
 
     Port = ssl_test_lib:inet_port(node()),
+    CaCertFile = proplists:get_value(cacertfile, ServerOpts),
     CertFile = proplists:get_value(certfile, ServerOpts),
     KeyFile = proplists:get_value(keyfile, ServerOpts),
     Version = ssl_test_lib:protocol_version(Config),
 
     Exe = "openssl",
     Args = ["s_server", "-msg", "-alpn", "http/1.1,spdy/2", "-accept", integer_to_list(Port), ssl_test_lib:version_flag(Version),
+            "-CAfile", CaCertFile,
 	    "-cert", CertFile, "-key", KeyFile],
     OpensslPort = ssl_test_lib:portable_open_port(Exe, Args),  
     ssl_test_lib:wait_for_openssl_server(Port, proplists:get_value(protocol, Config)),
@@ -1780,8 +1752,8 @@ start_erlang_server_and_openssl_client_for_alpn_npn_negotiation(Config, Data, Ca
 
 start_erlang_client_and_openssl_server_for_npn_negotiation(Config, Data, Callback) ->
     process_flag(trap_exit, true),
-    ServerOpts = ssl_test_lib:ssl_options(server_rsa_opts, Config),
-    ClientOpts0 = ssl_test_lib:ssl_options(client_rsa_opts, Config),
+    ServerOpts = ssl_test_lib:ssl_options(server_rsa_verify_opts, Config),
+    ClientOpts0 = ssl_test_lib:ssl_options(client_rsa_verify_opts, Config),
     ClientOpts = [{client_preferred_next_protocols, {client, [<<"spdy/2">>], <<"http/1.1">>}} | ClientOpts0],
 
     {ClientNode, _, Hostname} = ssl_test_lib:run_where(Config),
@@ -1789,6 +1761,7 @@ start_erlang_client_and_openssl_server_for_npn_negotiation(Config, Data, Callbac
     Data = "From openssl to erlang",
 
     Port = ssl_test_lib:inet_port(node()),
+    CaCertFile = proplists:get_value(cacertfile, ServerOpts),
     CertFile = proplists:get_value(certfile, ServerOpts),
     KeyFile = proplists:get_value(keyfile, ServerOpts),
     Version = ssl_test_lib:protocol_version(Config),
@@ -1796,6 +1769,7 @@ start_erlang_client_and_openssl_server_for_npn_negotiation(Config, Data, Callbac
     Exe = "openssl",
     Args = ["s_server", "-msg", "-nextprotoneg", "http/1.1,spdy/2", "-accept", integer_to_list(Port),
 	    ssl_test_lib:version_flag(Version),
+            "-CAfile", CaCertFile,
 	    "-cert", CertFile, "-key", KeyFile],
     OpensslPort = ssl_test_lib:portable_open_port(Exe, Args),  
 
@@ -1886,6 +1860,11 @@ erlang_ssl_receive(Socket, Data) ->
     ct:log("Connection info: ~p~n",
 		       [ssl:connection_information(Socket)]),
     receive
+        {ssl, Socket, "R\n"} ->
+            %% Swallow s_client renegotiation command.
+            %% openssl s_client connected commands can appear on
+            %% server side with some openssl versions.
+            erlang_ssl_receive(Socket,Data);
 	{ssl, Socket, Data} ->
 	    io:format("Received ~p~n",[Data]),
 	    %% open_ssl server sometimes hangs waiting in blocking read
@@ -1924,16 +1903,28 @@ server_sent_garbage(Socket) ->
 	    {error, closed} == ssl:send(Socket, "data")
 	    
     end.
+
+send_wait_send(Socket, [ErlData, OpenSslData]) ->
+    ssl:send(Socket, ErlData),
+    ct:sleep(?SLEEP),
+    ssl:send(Socket, ErlData),
+    erlang_ssl_receive(Socket, OpenSslData).
     
 check_openssl_sni_support(Config) ->
     HelpText = os:cmd("openssl s_client --help"),
-    case string:str(HelpText, "-servername") of
-        0 ->
-            {skip, "Current openssl doesn't support SNI"};
-        _ ->
-            Config
+    case ssl_test_lib:is_sane_oppenssl_sni() of
+        true ->
+            case string:str(HelpText, "-servername") of
+                0 ->
+                    {skip, "Current openssl doesn't support SNI"};
+                _ ->
+                    Config
+            end;
+        false ->
+            {skip, "Current openssl doesn't support SNI or extension handling is flawed"}
     end.
 
+            
 check_openssl_npn_support(Config) ->
     HelpText = os:cmd("openssl s_client --help"),
     case string:str(HelpText, "nextprotoneg") of
@@ -1999,17 +1990,13 @@ workaround_openssl_s_clinent() ->
 	    []
     end.
 
-openssl_client_args(false, Hostname, Port) ->
-    ["s_client", "-connect", Hostname ++ ":" ++ integer_to_list(Port)];
-openssl_client_args(true, Hostname, Port) ->
-    ["s_client",  "-no_ssl2", "-connect", Hostname ++ ":" ++ integer_to_list(Port)].
+openssl_client_args(Version, Hostname, Port) ->
+    ["s_client", "-connect", Hostname ++ ":" ++ integer_to_list(Port), ssl_test_lib:version_flag(Version)].
 
-openssl_client_args(false, Hostname, Port, ServerName) ->
+openssl_client_args(Version, Hostname, Port, ServerName) ->
     ["s_client",  "-connect", Hostname ++ ":" ++ 
-	 integer_to_list(Port), "-servername", ServerName];
-openssl_client_args(true, Hostname, Port, ServerName) ->
-    ["s_client",  "-no_ssl2", "-connect", Hostname ++ ":" ++ 
-	 integer_to_list(Port), "-servername", ServerName].
+	 integer_to_list(Port), ssl_test_lib:version_flag(Version), "-servername", ServerName].
+
 
 hostname_format(Hostname) ->
     case lists:member($., Hostname) of
@@ -2019,16 +2006,6 @@ hostname_format(Hostname) ->
             "localhost"   
     end.
 
-no_low_flag("-no_ssl2" = Flag) ->
-    case ssl_test_lib:supports_ssl_tls_version(sslv2) of
-        true ->
-            Flag;
-        false ->
-            ""
-    end;
-no_low_flag(Flag) ->
-    Flag.
-
 
 openssl_has_common_ciphers(Ciphers) ->
     OCiphers = ssl_test_lib:common_ciphers(openssl),
diff --git a/lib/ssl/test/ssl_upgrade_SUITE.erl b/lib/ssl/test/ssl_upgrade_SUITE.erl
index 875399db76..ead18aeb73 100644
--- a/lib/ssl/test/ssl_upgrade_SUITE.erl
+++ b/lib/ssl/test/ssl_upgrade_SUITE.erl
@@ -47,10 +47,7 @@ init_per_suite(Config0) ->
                 {skip, Reason} ->
                     {skip, Reason};
                 Config ->
-                    Result =
-                    {ok, _} = make_certs:all(proplists:get_value(data_dir, Config),
-                                             proplists:get_value(priv_dir, Config)),
-                    ssl_test_lib:cert_options(Config)
+                    ssl_test_lib:make_rsa_cert(Config)
             end
     catch _:_ ->
               {skip, "Crypto did not start"}
@@ -149,8 +146,8 @@ use_connection(Socket) ->
     end.
 
 soft_start_connection(Config, ResulProxy) ->
-    ClientOpts = proplists:get_value(client_verification_opts, Config),
-    ServerOpts = proplists:get_value(server_verification_opts, Config),
+    ClientOpts = proplists:get_value(client_rsa_verify_opts, Config),
+    ServerOpts = proplists:get_value(server_rsa_verify_opts, Config),
     {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
     Server = start_server([{node, ServerNode}, {port, 0},
 			   {from, ResulProxy},
@@ -166,8 +163,8 @@ soft_start_connection(Config, ResulProxy) ->
     {Server, Client}.
 
 restart_start_connection(Config, ResulProxy) ->
-    ClientOpts = proplists:get_value(client_verification_opts, Config),
-    ServerOpts = proplists:get_value(server_verification_opts, Config),
+    ClientOpts = proplists:get_value(client_rsa_verify_opts, Config),
+    ServerOpts = proplists:get_value(server_rsa_verify_opts, Config),
     {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
     Server = start_server([{node, ServerNode}, {port, 0},
 					{from, ResulProxy},
diff --git a/lib/ssl/vsn.mk b/lib/ssl/vsn.mk
index 75d959accf..c4bcc1560c 100644
--- a/lib/ssl/vsn.mk
+++ b/lib/ssl/vsn.mk
@@ -1 +1 @@
-SSL_VSN = 9.1
+SSL_VSN = 9.2.1
diff --git a/lib/stdlib/doc/src/array.xml b/lib/stdlib/doc/src/array.xml
index db0ab42372..aa1577a067 100644
--- a/lib/stdlib/doc/src/array.xml
+++ b/lib/stdlib/doc/src/array.xml
@@ -32,7 +32,7 @@
     <rev>A</rev>
     <file>array.xml</file>
   </header>
-  <module>array</module>
+  <module since="">array</module>
   <modulesummary>Functional, extendible arrays.</modulesummary>
   <description>
     <p>Functional, extendible arrays. Arrays can have fixed size, or can grow
@@ -137,7 +137,7 @@ A3 = array:fix(A2).</pre>
 
   <funcs>
     <func>
-      <name name="default" arity="1"/>
+      <name name="default" arity="1" since=""/>
       <fsummary>Get the value used for uninitialized entries.</fsummary>
       <desc><marker id="default-1"/>
         <p>Gets the value used for uninitialized entries.</p>
@@ -146,7 +146,7 @@ A3 = array:fix(A2).</pre>
     </func>
 
     <func>
-      <name name="fix" arity="1"/>
+      <name name="fix" arity="1" since=""/>
       <fsummary>Fix the array size.</fsummary>
       <desc><marker id="fix-1"/>
         <p>Fixes the array size. This prevents it from growing automatically
@@ -157,7 +157,7 @@ A3 = array:fix(A2).</pre>
     </func>
 
     <func>
-      <name name="foldl" arity="3"/>
+      <name name="foldl" arity="3" since=""/>
       <fsummary>Fold the array elements using the specified function and initial
         accumulator value.</fsummary>
       <desc><marker id="foldl-3"/>
@@ -172,7 +172,7 @@ A3 = array:fix(A2).</pre>
     </func>
 
     <func>
-      <name name="foldr" arity="3"/>
+      <name name="foldr" arity="3" since=""/>
       <fsummary>Fold the array elements right-to-left using the specified
         function and initial accumulator value.</fsummary>
       <desc><marker id="foldr-3"/>
@@ -186,7 +186,7 @@ A3 = array:fix(A2).</pre>
     </func>
 
     <func>
-      <name name="from_list" arity="1"/>
+      <name name="from_list" arity="1" since=""/>
       <fsummary>Equivalent to <c>from_list(List, undefined)</c>.</fsummary>
       <desc><marker id="from_list-1"/>
         <p>Equivalent to
@@ -195,7 +195,7 @@ A3 = array:fix(A2).</pre>
     </func>
 
     <func>
-      <name name="from_list" arity="2"/>
+      <name name="from_list" arity="2" since=""/>
       <fsummary>Convert a list to an extendible array.</fsummary>
       <desc><marker id="from_list-2"/>
         <p>Converts a list to an extendible array. <c><anno>Default</anno></c>
@@ -208,7 +208,7 @@ A3 = array:fix(A2).</pre>
     </func>
 
     <func>
-      <name name="from_orddict" arity="1"/>
+      <name name="from_orddict" arity="1" since=""/>
       <fsummary>Equivalent to <c>from_orddict(Orddict, undefined)</c>.
       </fsummary>
       <desc><marker id="from_orddict-1"/>
@@ -218,7 +218,7 @@ A3 = array:fix(A2).</pre>
     </func>
 
     <func>
-      <name name="from_orddict" arity="2"/>
+      <name name="from_orddict" arity="2" since=""/>
       <fsummary>Convert an ordered list of pairs <c>{Index, Value}</c> to a
         corresponding extendible array.</fsummary>
       <desc><marker id="from_orddict-2"/>
@@ -234,7 +234,7 @@ A3 = array:fix(A2).</pre>
     </func>
 
     <func>
-      <name name="get" arity="2"/>
+      <name name="get" arity="2" since=""/>
       <fsummary>Get the value of entry <c>I</c>.</fsummary>
       <desc><marker id="get-2"/>
         <p>Gets the value of entry <c><anno>I</anno></c>. If
@@ -249,7 +249,7 @@ A3 = array:fix(A2).</pre>
     </func>
 
     <func>
-      <name name="is_array" arity="1"/>
+      <name name="is_array" arity="1" since=""/>
       <fsummary>Returns <c>true</c> if <c>X</c> is an array, otherwise
         <c>false</c>.</fsummary>
       <desc><marker id="is_array-1"/>
@@ -261,7 +261,7 @@ A3 = array:fix(A2).</pre>
     </func>
 
     <func>
-      <name name="is_fix" arity="1"/>
+      <name name="is_fix" arity="1" since=""/>
       <fsummary>Check if the array has fixed size.</fsummary>
       <desc><marker id="is_fix-1"/>
         <p>Checks if the array has fixed size. Returns <c>true</c> if the array
@@ -271,7 +271,7 @@ A3 = array:fix(A2).</pre>
     </func>
 
     <func>
-      <name name="map" arity="2"/>
+      <name name="map" arity="2" since=""/>
       <fsummary>Map the specified function onto each array element.</fsummary>
       <desc><marker id="map-2"/>
         <p>Maps the specified function onto each array element. The elements are
@@ -285,7 +285,7 @@ A3 = array:fix(A2).</pre>
     </func>
 
     <func>
-      <name name="new" arity="0"/>
+      <name name="new" arity="0" since=""/>
       <fsummary>Create a new, extendible array with initial size zero.
       </fsummary>
       <desc><marker id="new-0"/>
@@ -296,7 +296,7 @@ A3 = array:fix(A2).</pre>
     </func>
 
     <func>
-      <name name="new" arity="1"/>
+      <name name="new" arity="1" since=""/>
       <fsummary>Create a new array according to the specified options.
       </fsummary>
       <desc><marker id="new-1"/>
@@ -346,7 +346,7 @@ array:new([{size,10},{fixed,false},{default,-1}])</pre>
     </func>
 
     <func>
-      <name name="new" arity="2"/>
+      <name name="new" arity="2" since=""/>
       <fsummary>Create a new array according to the specified size and options.
       </fsummary>
       <desc><marker id="new-2"/>
@@ -370,7 +370,7 @@ array:new(100, {default,0})</pre>
     </func>
 
     <func>
-      <name name="relax" arity="1"/>
+      <name name="relax" arity="1" since=""/>
       <fsummary>Make the array resizable.</fsummary>
       <desc><marker id="relax-1"/>
         <p>Makes the array resizable. (Reverses the effects of
@@ -380,7 +380,7 @@ array:new(100, {default,0})</pre>
     </func>
 
     <func>
-      <name name="reset" arity="2"/>
+      <name name="reset" arity="2" since=""/>
       <fsummary>Reset entry <c>I</c> to the default value for the array.
       </fsummary>
       <desc><marker id="reset-2"/>
@@ -399,7 +399,7 @@ array:new(100, {default,0})</pre>
     </func>
 
     <func>
-      <name name="resize" arity="1"/>
+      <name name="resize" arity="1" since=""/>
       <fsummary>Change the array size to that reported by <c>sparse_size/1</c>.
       </fsummary>
       <desc><marker id="resize-1"/>
@@ -413,7 +413,7 @@ array:new(100, {default,0})</pre>
     </func>
 
     <func>
-      <name name="resize" arity="2"/>
+      <name name="resize" arity="2" since=""/>
       <fsummary>Change the array size.</fsummary>
       <desc><marker id="resize-2"/>
         <p>Change the array size. If <c><anno>Size</anno></c> is not a
@@ -424,7 +424,7 @@ array:new(100, {default,0})</pre>
     </func>
 
     <func>
-      <name name="set" arity="3"/>
+      <name name="set" arity="3" since=""/>
       <fsummary>Set entry <c>I</c> of the array to <c>Value</c>.</fsummary>
       <desc><marker id="set-3"/>
         <p>Sets entry <c><anno>I</anno></c> of the array to
@@ -441,7 +441,7 @@ array:new(100, {default,0})</pre>
     </func>
 
     <func>
-      <name name="size" arity="1"/>
+      <name name="size" arity="1" since=""/>
       <fsummary>Get the number of entries in the array.</fsummary>
       <desc><marker id="size-1"/>
         <p>Gets the number of entries in the array. Entries are numbered from
@@ -454,7 +454,7 @@ array:new(100, {default,0})</pre>
     </func>
 
     <func>
-      <name name="sparse_foldl" arity="3"/>
+      <name name="sparse_foldl" arity="3" since=""/>
       <fsummary>Fold the array elements using the specified function and initial
         accumulator value, skipping default-valued entries.</fsummary>
       <desc><marker id="sparse_foldl-3"/>
@@ -469,7 +469,7 @@ array:new(100, {default,0})</pre>
     </func>
 
     <func>
-      <name name="sparse_foldr" arity="3"/>
+      <name name="sparse_foldr" arity="3" since=""/>
       <fsummary>Fold the array elements right-to-left using the specified
         function and initial accumulator value, skipping default-valued
         entries.</fsummary>
@@ -485,7 +485,7 @@ array:new(100, {default,0})</pre>
     </func>
 
     <func>
-      <name name="sparse_map" arity="2"/>
+      <name name="sparse_map" arity="2" since=""/>
       <fsummary>Map the specified function onto each array element, skipping
         default-valued entries.</fsummary>
       <desc><marker id="sparse_map-2"/>
@@ -498,7 +498,7 @@ array:new(100, {default,0})</pre>
     </func>
 
     <func>
-      <name name="sparse_size" arity="1"/>
+      <name name="sparse_size" arity="1" since=""/>
       <fsummary>Get the number of entries in the array up until the last
         non-default-valued entry.</fsummary>
       <desc><marker id="sparse_size-1"/>
@@ -512,7 +512,7 @@ array:new(100, {default,0})</pre>
     </func>
 
     <func>
-      <name name="sparse_to_list" arity="1"/>
+      <name name="sparse_to_list" arity="1" since=""/>
       <fsummary>Convert the array to a list, skipping default-valued entries.
       </fsummary>
       <desc><marker id="sparse_to_list-1"/>
@@ -522,7 +522,7 @@ array:new(100, {default,0})</pre>
     </func>
 
     <func>
-      <name name="sparse_to_orddict" arity="1"/>
+      <name name="sparse_to_orddict" arity="1" since=""/>
       <fsummary>Convert the array to an ordered list of pairs <c>{Index,
         Value}</c>, skipping default-valued entries.</fsummary>
       <desc><marker id="sparse_to_orddict-1"/>
@@ -534,7 +534,7 @@ array:new(100, {default,0})</pre>
     </func>
 
     <func>
-      <name name="to_list" arity="1"/>
+      <name name="to_list" arity="1" since=""/>
       <fsummary>Convert the array to a list.</fsummary>
       <desc><marker id="to_list-1"/>
         <p>Converts the array to a list.</p>
@@ -545,7 +545,7 @@ array:new(100, {default,0})</pre>
     </func>
 
     <func>
-      <name name="to_orddict" arity="1"/>
+      <name name="to_orddict" arity="1" since=""/>
       <fsummary>Convert the array to an ordered list of pairs <c>{Index,
         Value}</c>.</fsummary>
       <desc><marker id="to_orddict-1"/>
diff --git a/lib/stdlib/doc/src/base64.xml b/lib/stdlib/doc/src/base64.xml
index cfa1ecc006..479072ba4f 100644
--- a/lib/stdlib/doc/src/base64.xml
+++ b/lib/stdlib/doc/src/base64.xml
@@ -29,7 +29,7 @@
     <rev></rev>
     <file>base64.xml</file>
   </header>
-  <module>base64</module>
+  <module since="">base64</module>
   <modulesummary>Provides base64 encode and decode, see
     RFC 2045.</modulesummary>
   <description>
@@ -51,10 +51,10 @@
 
   <funcs>
     <func>
-      <name name="decode" arity="1"/>
-      <name name="decode_to_string" arity="1"/>
-      <name name="mime_decode" arity="1"/>
-      <name name="mime_decode_to_string" arity="1"/>
+      <name name="decode" arity="1" since=""/>
+      <name name="decode_to_string" arity="1" since=""/>
+      <name name="mime_decode" arity="1" since=""/>
+      <name name="mime_decode_to_string" arity="1" since=""/>
       <fsummary>Decode a base64 encoded string to data.</fsummary>
       <type variable="Base64" name_i="1"/>
       <type variable="Data" name_i="1"/>
@@ -69,8 +69,8 @@
     </func>
 
     <func>
-      <name name="encode" arity="1"/>
-      <name name="encode_to_string" arity="1"/>
+      <name name="encode" arity="1" since=""/>
+      <name name="encode_to_string" arity="1" since=""/>
       <fsummary>Encode data into base64.</fsummary>
       <type variable="Data"/>
       <type variable="Base64" name_i="1"/>
diff --git a/lib/stdlib/doc/src/beam_lib.xml b/lib/stdlib/doc/src/beam_lib.xml
index 213170df7f..bb44ca3201 100644
--- a/lib/stdlib/doc/src/beam_lib.xml
+++ b/lib/stdlib/doc/src/beam_lib.xml
@@ -28,7 +28,7 @@
     <date>1999-10-30</date>
     <rev>PA1</rev>
   </header>
-  <module>beam_lib</module>
+  <module since="">beam_lib</module>
   <modulesummary>An interface to the BEAM file format.</modulesummary>
   <description>
     <p>This module provides an interface to files created by
@@ -267,7 +267,7 @@ io:fwrite("~s~n", [erl_prettypr:format(erl_syntax:form_list(AC))]).</code>
 
   <funcs>
     <func>
-      <name name="all_chunks" arity="1"/>
+      <name name="all_chunks" arity="1" since="OTP 18.2"/>
       <fsummary>Read all chunks from a BEAM file or binary</fsummary>
       <desc>
         <p>Reads chunk data for all chunks.</p>
@@ -275,7 +275,7 @@ io:fwrite("~s~n", [erl_prettypr:format(erl_syntax:form_list(AC))]).</code>
     </func>
 
     <func>
-      <name name="build_module" arity="1"/>
+      <name name="build_module" arity="1" since="OTP 18.2"/>
       <fsummary>Create a BEAM module from a list of chunks.</fsummary>
       <desc>
         <p>Builds a BEAM module (as a binary) from a list of chunks.</p>
@@ -283,7 +283,7 @@ io:fwrite("~s~n", [erl_prettypr:format(erl_syntax:form_list(AC))]).</code>
     </func>
 
     <func>
-      <name name="chunks" arity="2"/>
+      <name name="chunks" arity="2" since=""/>
       <fsummary>Read selected chunks from a BEAM file or binary.</fsummary>
       <desc>
         <p>Reads chunk data for selected chunks references. The order of
@@ -293,7 +293,7 @@ io:fwrite("~s~n", [erl_prettypr:format(erl_syntax:form_list(AC))]).</code>
     </func>
 
     <func>
-      <name name="chunks" arity="3"/>
+      <name name="chunks" arity="3" since=""/>
       <fsummary>Read selected chunks from a BEAM file or binary.</fsummary>
       <desc>
         <p>Reads chunk data for selected chunks references. The order of
@@ -312,7 +312,7 @@ io:fwrite("~s~n", [erl_prettypr:format(erl_syntax:form_list(AC))]).</code>
     </func>
 
     <func>
-      <name name="clear_crypto_key_fun" arity="0"/>
+      <name name="clear_crypto_key_fun" arity="0" since=""/>
       <fsummary>Unregister the current crypto key fun.</fsummary>
       <desc>
         <p>Unregisters the crypto key fun and terminates the process
@@ -327,7 +327,7 @@ io:fwrite("~s~n", [erl_prettypr:format(erl_syntax:form_list(AC))]).</code>
     </func>
 
     <func>
-      <name name="cmp" arity="2"/>
+      <name name="cmp" arity="2" since=""/>
       <fsummary>Compare two BEAM files.</fsummary>
       <type name="cmp_rsn"/>
       <desc>
@@ -341,7 +341,7 @@ io:fwrite("~s~n", [erl_prettypr:format(erl_syntax:form_list(AC))]).</code>
     </func>
 
     <func>
-      <name name="cmp_dirs" arity="2"/>
+      <name name="cmp_dirs" arity="2" since=""/>
       <fsummary>Compare the BEAM files in two directories.</fsummary>
       <desc>
         <p>Compares the BEAM files in
@@ -359,7 +359,7 @@ io:fwrite("~s~n", [erl_prettypr:format(erl_syntax:form_list(AC))]).</code>
     </func>
 
     <func>
-      <name name="crypto_key_fun" arity="1"/>
+      <name name="crypto_key_fun" arity="1" since=""/>
       <fsummary>Register a fun that provides a crypto key.</fsummary>
       <type name="crypto_fun"/>
       <type name="crypto_fun_arg"/>
@@ -398,7 +398,7 @@ CryptoKeyFun(clear) -> term()</code>
     </func>
 
     <func>
-      <name name="diff_dirs" arity="2"/>
+      <name name="diff_dirs" arity="2" since=""/>
       <fsummary>Compare the BEAM files in two directories.</fsummary>
       <desc>
         <p>Compares the BEAM files in two directories as
@@ -409,7 +409,7 @@ CryptoKeyFun(clear) -> term()</code>
     </func>
 
     <func>
-      <name name="format_error" arity="1"/>
+      <name name="format_error" arity="1" since=""/>
       <fsummary>Return an English description of a BEAM read error reply.
       </fsummary>
       <desc>
@@ -422,7 +422,7 @@ CryptoKeyFun(clear) -> term()</code>
     </func>
 
     <func>
-      <name name="info" arity="1"/>
+      <name name="info" arity="1" since=""/>
       <fsummary>Information about a BEAM file.</fsummary>
       <desc>
         <p>Returns a list containing some information about a BEAM file
@@ -449,7 +449,7 @@ CryptoKeyFun(clear) -> term()</code>
     </func>
 
     <func>
-      <name name="md5" arity="1"/>
+      <name name="md5" arity="1" since=""/>
       <fsummary>Read the module version of the BEAM file.</fsummary>
       <desc>
         <p>Calculates an MD5 redundancy check for the code of the module
@@ -458,7 +458,7 @@ CryptoKeyFun(clear) -> term()</code>
     </func>
 
     <func>
-      <name name="strip" arity="1"/>
+      <name name="strip" arity="1" since=""/>
       <fsummary>Remove chunks not needed by the loader from a BEAM file.
       </fsummary>
       <desc>
@@ -470,7 +470,19 @@ CryptoKeyFun(clear) -> term()</code>
     </func>
 
     <func>
-      <name name="strip_files" arity="1"/>
+      <name name="strip" arity="2" since=""/>
+      <fsummary>Remove chunks not needed by the loader from a BEAM file.
+      </fsummary>
+      <desc>
+        <p>Removes all chunks from a BEAM
+          file except those needed by the loader or passed in. In particular,
+          the debug information (chunk <c>debug_info</c> and <c>abstract_code</c>)
+          is removed.</p>
+      </desc>
+    </func>
+
+    <func>
+      <name name="strip_files" arity="1" since=""/>
       <fsummary>Removes chunks not needed by the loader from BEAM files.
       </fsummary>
       <desc>
@@ -483,7 +495,20 @@ CryptoKeyFun(clear) -> term()</code>
     </func>
 
     <func>
-      <name name="strip_release" arity="1"/>
+      <name name="strip_files" arity="2" since=""/>
+      <fsummary>Removes chunks not needed by the loader from BEAM files.
+      </fsummary>
+      <desc>
+        <p>Removes all chunks except
+          those needed by the loader or passed in from BEAM files. In particular,
+          the debug information (chunk <c>debug_info</c> and <c>abstract_code</c>)
+          is removed. The returned list contains one element for each
+          specified filename, in the same order as in <c>Files</c>.</p>
+      </desc>
+    </func>
+
+    <func>
+      <name name="strip_release" arity="1" since=""/>
       <fsummary>Remove chunks not needed by the loader from all BEAM files of
         a release.</fsummary>
       <desc>
@@ -497,7 +522,21 @@ CryptoKeyFun(clear) -> term()</code>
     </func>
 
     <func>
-      <name name="version" arity="1"/>
+      <name name="strip_release" arity="2" since=""/>
+      <fsummary>Remove chunks not needed by the loader from all BEAM files of
+        a release.</fsummary>
+      <desc>
+        <p>Removes all chunks
+          except those needed by the loader or passed in from the BEAM files of a
+          release. <c><anno>Dir</anno></c> is to be the installation root
+          directory. For example, the current OTP release can be
+          stripped with the call
+          <c>beam_lib:strip_release(code:root_dir())</c>.</p>
+      </desc>
+    </func>
+
+    <func>
+      <name name="version" arity="1" since=""/>
       <fsummary>Read the module version of the BEAM file.</fsummary>
       <desc>
         <p>Returns the module version or versions. A version is defined by
diff --git a/lib/stdlib/doc/src/binary.xml b/lib/stdlib/doc/src/binary.xml
index 6a86d6c7ba..f3d4edd30f 100644
--- a/lib/stdlib/doc/src/binary.xml
+++ b/lib/stdlib/doc/src/binary.xml
@@ -34,7 +34,7 @@
     <rev>A</rev>
     <file>binary.xml</file>
   </header>
-  <module>binary</module>
+  <module since="OTP R14B">binary</module>
   <modulesummary>Library for handling binary data.</modulesummary>
   <description>
 
@@ -79,7 +79,7 @@
 
   <funcs>
     <func>
-    <name name="at" arity="2"/>
+    <name name="at" arity="2" since="OTP R14B"/>
       <fsummary>Return the byte at a specific position in a binary.</fsummary>
       <desc>
       <p>Returns the byte at position <c><anno>Pos</anno></c> (zero-based) in
@@ -90,7 +90,7 @@
     </func>
 
     <func>
-      <name name="bin_to_list" arity="1"/>
+      <name name="bin_to_list" arity="1" since="OTP R14B"/>
       <fsummary>Convert a binary to a list of integers.</fsummary>
       <desc>
       <p>Same as <c>bin_to_list(<anno>Subject</anno>, {0,byte_size(<anno>Subject</anno>)})</c>.</p>
@@ -98,7 +98,7 @@
     </func>
 
     <func>
-      <name name="bin_to_list" arity="2"/>
+      <name name="bin_to_list" arity="2" since="OTP R14B"/>
       <fsummary>Convert a binary to a list of integers.</fsummary>
       <desc>
       <p>Converts <c><anno>Subject</anno></c> to a list of <c>byte()</c>s, each
@@ -118,7 +118,7 @@
     </func>
 
     <func>
-      <name name="bin_to_list" arity="3"/>
+      <name name="bin_to_list" arity="3" since="OTP R14B"/>
       <fsummary>Convert a binary to a list of integers.</fsummary>
       <desc>
       <p>Same as<c> bin_to_list(<anno>Subject</anno>, {<anno>Pos</anno>, <anno>Len</anno>})</c>.</p>
@@ -126,7 +126,7 @@
     </func>
 
     <func>
-      <name name="compile_pattern" arity="1"/>
+      <name name="compile_pattern" arity="1" since="OTP R14B"/>
       <fsummary>Precompile a binary search pattern.</fsummary>
       <desc>
       <p>Builds an internal structure representing a compilation of a
@@ -158,7 +158,7 @@
     </func>
 
     <func>
-      <name name="copy" arity="1"/>
+      <name name="copy" arity="1" since="OTP R14B"/>
       <fsummary>Create a duplicate of a binary.</fsummary>
       <desc>
       <p>Same as <c>copy(<anno>Subject</anno>, 1)</c>.</p>
@@ -166,7 +166,7 @@
     </func>
 
     <func>
-      <name name="copy" arity="2"/>
+      <name name="copy" arity="2" since="OTP R14B"/>
       <fsummary>Duplicate a binary <c>N</c> times and create a new.</fsummary>
       <desc>
       <p>Creates a binary with the content of <c><anno>Subject</anno></c>
@@ -193,7 +193,7 @@
     </func>
 
     <func>
-      <name name="decode_unsigned" arity="1"/>
+      <name name="decode_unsigned" arity="1" since="OTP R14B"/>
       <fsummary>Decode a whole binary into an integer of arbitrary size.
       </fsummary>
       <desc>
@@ -202,7 +202,7 @@
     </func>
 
     <func>
-      <name name="decode_unsigned" arity="2"/>
+      <name name="decode_unsigned" arity="2" since="OTP R14B"/>
       <fsummary>Decode a whole binary into an integer of arbitrary size.
       </fsummary>
       <desc>
@@ -219,7 +219,7 @@
     </func>
 
     <func>
-      <name name="encode_unsigned" arity="1"/>
+      <name name="encode_unsigned" arity="1" since="OTP R14B"/>
       <fsummary>Encode an unsigned integer into the minimal binary.</fsummary>
       <desc>
       <p>Same as <c>encode_unsigned(<anno>Unsigned</anno>, big)</c>.</p>
@@ -227,7 +227,7 @@
     </func>
 
     <func>
-      <name name="encode_unsigned" arity="2"/>
+      <name name="encode_unsigned" arity="2" since="OTP R14B"/>
       <fsummary>Encode an unsigned integer into the minimal binary.</fsummary>
       <desc>
       <p>Converts a positive integer to the smallest possible
@@ -243,7 +243,7 @@
     </func>
 
     <func>
-      <name name="first" arity="1"/>
+      <name name="first" arity="1" since="OTP R14B"/>
       <fsummary>Return the first byte of a binary.</fsummary>
       <desc>
       <p>Returns the first byte of binary <c><anno>Subject</anno></c> as an
@@ -253,7 +253,7 @@
     </func>
 
     <func>
-      <name name="last" arity="1"/>
+      <name name="last" arity="1" since="OTP R14B"/>
       <fsummary>Return the last byte of a binary.</fsummary>
       <desc>
       <p>Returns the last byte of binary <c><anno>Subject</anno></c> as an
@@ -263,7 +263,7 @@
     </func>
 
     <func>
-      <name name="list_to_bin" arity="1"/>
+      <name name="list_to_bin" arity="1" since="OTP R14B"/>
       <fsummary>Convert a list of integers and binaries to a binary.</fsummary>
       <desc>
       <p>Works exactly as
@@ -273,7 +273,7 @@
     </func>
 
     <func>
-      <name name="longest_common_prefix" arity="1"/>
+      <name name="longest_common_prefix" arity="1" since="OTP R14B"/>
       <fsummary>Return length of longest common prefix for a set of binaries.
       </fsummary>
       <desc>
@@ -294,7 +294,7 @@
     </func>
 
     <func>
-      <name name="longest_common_suffix" arity="1"/>
+      <name name="longest_common_suffix" arity="1" since="OTP R14B"/>
       <fsummary>Return length of longest common suffix for a set of binaries.
       </fsummary>
       <desc>
@@ -315,7 +315,7 @@
     </func>
 
     <func>
-      <name name="match" arity="2"/>
+      <name name="match" arity="2" since="OTP R14B"/>
       <fsummary>Search for the first match of a pattern in a binary.</fsummary>
       <desc>
       <p>Same as <c>match(<anno>Subject</anno>, <anno>Pattern</anno>, [])</c>.
@@ -324,7 +324,7 @@
     </func>
 
     <func>
-      <name name="match" arity="3"/>
+      <name name="match" arity="3" since="OTP R14B"/>
       <fsummary>Search for the first match of a pattern in a binary.</fsummary>
       <type name="part"/>
       <desc>
@@ -372,7 +372,7 @@
     </func>
 
     <func>
-      <name name="matches" arity="2"/>
+      <name name="matches" arity="2" since="OTP R14B"/>
       <fsummary>Search for all matches of a pattern in a binary.</fsummary>
       <desc>
       <p>Same as <c>matches(<anno>Subject</anno>, <anno>Pattern</anno>, [])</c>.
@@ -381,7 +381,7 @@
     </func>
 
     <func>
-      <name name="matches" arity="3"/>
+      <name name="matches" arity="3" since="OTP R14B"/>
       <fsummary>Search for all matches of a pattern in a binary.</fsummary>
       <type name="part"/>
       <desc>
@@ -425,7 +425,7 @@
     </func>
 
     <func>
-      <name name="part" arity="2"/>
+      <name name="part" arity="2" since="OTP R14B"/>
       <fsummary>Extract a part of a binary.</fsummary>
       <desc>
       <p>Extracts the part of binary <c><anno>Subject</anno></c> described by
@@ -453,7 +453,7 @@
     </func>
 
     <func>
-      <name name="part" arity="3"/>
+      <name name="part" arity="3" since="OTP R14B"/>
       <fsummary>Extract a part of a binary.</fsummary>
       <desc>
       <p>Same as <c>part(<anno>Subject</anno>, {<anno>Pos</anno>,
@@ -462,7 +462,7 @@
     </func>
 
     <func>
-      <name name="referenced_byte_size" arity="1"/>
+      <name name="referenced_byte_size" arity="1" since="OTP R14B"/>
       <fsummary>Determine the size of the binary pointed out by a subbinary.
       </fsummary>
       <desc>
@@ -525,7 +525,7 @@ store(Binary, GBSet) ->
     </func>
 
     <func>
-      <name name="replace" arity="3"/>
+      <name name="replace" arity="3" since="OTP R14B"/>
       <fsummary>Replace bytes in a binary according to a pattern.</fsummary>
       <desc>
       <p>Same as <c>replace(<anno>Subject</anno>, <anno>Pattern</anno>, <anno>Replacement</anno>,[])</c>.</p>
@@ -533,7 +533,7 @@ store(Binary, GBSet) ->
     </func>
 
     <func>
-      <name name="replace" arity="4"/>
+      <name name="replace" arity="4" since="OTP R14B"/>
       <fsummary>Replace bytes in a binary according to a pattern.</fsummary>
       <type_desc variable="OnePos">An integer() =&lt; byte_size(<anno>Replacement</anno>)
       </type_desc>
@@ -575,7 +575,7 @@ store(Binary, GBSet) ->
     </func>
 
     <func>
-      <name name="split" arity="2"/>
+      <name name="split" arity="2" since="OTP R14B"/>
       <fsummary>Split a binary according to a pattern.</fsummary>
       <desc>
       <p>Same as <c>split(<anno>Subject</anno>, <anno>Pattern</anno>,
@@ -584,7 +584,7 @@ store(Binary, GBSet) ->
     </func>
 
     <func>
-      <name name="split" arity="3"/>
+      <name name="split" arity="3" since="OTP R14B"/>
       <fsummary>Split a binary according to a pattern.</fsummary>
       <desc>
       <p>Splits <c><anno>Subject</anno></c> into a list of binaries based on
diff --git a/lib/stdlib/doc/src/c.xml b/lib/stdlib/doc/src/c.xml
index b6cb6f5aae..29edc373c7 100644
--- a/lib/stdlib/doc/src/c.xml
+++ b/lib/stdlib/doc/src/c.xml
@@ -28,7 +28,7 @@
     <date>1996-10-30</date>
     <rev>B</rev>
   </header>
-  <module>c</module>
+  <module since="">c</module>
   <modulesummary>Command interface module.</modulesummary>
   <description>
     <p>This module enables users to enter the short form of
@@ -41,7 +41,7 @@
 
   <funcs>
     <func>
-      <name name="bt" arity="1"/>
+      <name name="bt" arity="1" since=""/>
       <fsummary>Stack backtrace for a process.</fsummary>
       <desc>
         <p>Stack backtrace for a process. Equivalent to
@@ -50,9 +50,9 @@
     </func>
 
     <func>
-      <name name="c" arity="1"/>
-      <name name="c" arity="2"/>
-      <name name="c" arity="3"/>
+      <name name="c" arity="1" since=""/>
+      <name name="c" arity="2" since=""/>
+      <name name="c" arity="3" since="OTP 20.0"/>
       <fsummary>Compile and load a file or module.</fsummary>
       <desc>
         <p>Compiles and then purges and loads the code for a module.
@@ -80,7 +80,7 @@
     </func>
 
     <func>
-      <name name="cd" arity="1"/>
+      <name name="cd" arity="1" since=""/>
       <fsummary>Change working directory.</fsummary>
       <desc>
         <p>Changes working directory to <c><anno>Dir</anno></c>, which can be a
@@ -94,7 +94,7 @@
     </func>
 
     <func>
-      <name name="erlangrc" arity="1"/>
+      <name name="erlangrc" arity="1" since="OTP 21.0"/>
       <fsummary>Load an erlang resource file.</fsummary>
       <desc>
         <p>Search <c>PathList</c> and load <c>.erlang</c> resource file if
@@ -103,7 +103,7 @@
     </func>
 
     <func>
-      <name name="flush" arity="0"/>
+      <name name="flush" arity="0" since=""/>
       <fsummary>Flush any messages sent to the shell.</fsummary>
       <desc>
         <p>Flushes any messages sent to the shell.</p>
@@ -111,7 +111,7 @@
     </func>
 
     <func>
-      <name name="help" arity="0"/>
+      <name name="help" arity="0" since=""/>
       <fsummary>Help information.</fsummary>
       <desc>
         <p>Displays help information: all valid shell internal commands,
@@ -120,8 +120,8 @@
     </func>
 
     <func>
-      <name name="i" arity="0"/>
-      <name name="ni" arity="0"/>
+      <name name="i" arity="0" since=""/>
+      <name name="ni" arity="0" since=""/>
       <fsummary>System information.</fsummary>
       <desc>
         <p><c>i/0</c> displays system information, listing
@@ -131,7 +131,7 @@
     </func>
 
     <func>
-      <name name="i" arity="3"/>
+      <name name="i" arity="3" since=""/>
       <fsummary>Information about pid &lt;X.Y.Z&gt;.</fsummary>
       <desc>
         <p>Displays information about a process, Equivalent to
@@ -141,7 +141,7 @@
     </func>
 
     <func>
-      <name name="l" arity="1"/>
+      <name name="l" arity="1" since=""/>
       <fsummary>Load or reload a module.</fsummary>
       <desc>
         <p>Purges and loads, or reloads, a module by calling
@@ -154,7 +154,7 @@
     </func>
 
     <func>
-      <name>lc(Files) -> ok</name>
+      <name since="">lc(Files) -> ok</name>
       <fsummary>Compile a list of files.</fsummary>
       <type>
         <v>Files = [File]</v>
@@ -171,7 +171,7 @@
     </func>
 
     <func>
-      <name name="lm" arity="0"/>
+      <name name="lm" arity="0" since="OTP 20.0"/>
       <fsummary>Loads all modified modules.</fsummary>
       <desc>
         <p>Reloads all currently loaded modules that have changed on disk (see <c>mm()</c>).
@@ -180,7 +180,7 @@
     </func>
 
     <func>
-      <name name="ls" arity="0"/>
+      <name name="ls" arity="0" since=""/>
       <fsummary>List files in the current directory.</fsummary>
       <desc>
         <p>Lists files in the current directory.</p>
@@ -188,7 +188,7 @@
     </func>
 
     <func>
-      <name name="ls" arity="1"/>
+      <name name="ls" arity="1" since=""/>
       <fsummary>List files in a directory or a single file.</fsummary>
       <desc>
         <p>Lists files in directory <c><anno>Dir</anno></c> or, if <c>Dir</c>
@@ -197,7 +197,7 @@
     </func>
 
     <func>
-      <name name="m" arity="0"/>
+      <name name="m" arity="0" since=""/>
       <fsummary>Which modules are loaded.</fsummary>
       <desc>
         <p>Displays information about the loaded modules, including
@@ -206,7 +206,7 @@
     </func>
 
     <func>
-      <name name="m" arity="1"/>
+      <name name="m" arity="1" since=""/>
       <fsummary>Information about a module.</fsummary>
       <desc>
         <p>Displays information about <c><anno>Module</anno></c>.</p>
@@ -214,7 +214,7 @@
     </func>
 
     <func>
-      <name name="mm" arity="0"/>
+      <name name="mm" arity="0" since="OTP 20.0"/>
       <fsummary>Lists all modified modules.</fsummary>
       <desc>
         <p>Lists all modified modules. Shorthand for
@@ -223,7 +223,7 @@
     </func>
 
     <func>
-      <name name="memory" arity="0"/>
+      <name name="memory" arity="0" since=""/>
       <fsummary>Memory allocation information.</fsummary>
       <desc>
         <p>Memory allocation information. Equivalent to
@@ -232,8 +232,8 @@
     </func>
 
     <func>
-      <name name="memory" arity="1" clause_i="1"/>
-      <name name="memory" arity="1" clause_i="2"/>
+      <name name="memory" arity="1" clause_i="1" since=""/>
+      <name name="memory" arity="1" clause_i="2" since=""/>
       <fsummary>Memory allocation information.</fsummary>
       <desc>
         <p>Memory allocation information. Equivalent to
@@ -242,8 +242,8 @@
     </func>
 
     <func>
-      <name name="nc" arity="1"/>
-      <name name="nc" arity="2"/>
+      <name name="nc" arity="1" since=""/>
+      <name name="nc" arity="2" since=""/>
       <fsummary>Compile and load code in a file on all nodes.</fsummary>
       <desc>
         <p>Compiles and then loads the code for a file on all nodes.
@@ -255,7 +255,7 @@ compile:file(<anno>File</anno>, <anno>Options</anno> ++ [report_errors, report_w
     </func>
 
     <func>
-      <name name="nl" arity="1"/>
+      <name name="nl" arity="1" since=""/>
       <fsummary>Load module on all nodes.</fsummary>
       <desc>
         <p>Loads <c><anno>Module</anno></c> on all nodes.</p>
@@ -263,7 +263,7 @@ compile:file(<anno>File</anno>, <anno>Options</anno> ++ [report_errors, report_w
     </func>
 
     <func>
-      <name name="pid" arity="3"/>
+      <name name="pid" arity="3" since=""/>
       <fsummary>Convert <c>X,Y,Z</c> to a pid.</fsummary>
       <desc>
         <p>Converts <c><anno>X</anno></c>, <c><anno>Y</anno></c>,
@@ -273,7 +273,7 @@ compile:file(<anno>File</anno>, <anno>Options</anno> ++ [report_errors, report_w
     </func>
 
     <func>
-      <name name="pwd" arity="0"/>
+      <name name="pwd" arity="0" since=""/>
       <fsummary>Print working directory.</fsummary>
       <desc>
         <p>Prints the name of the working directory.</p>
@@ -281,7 +281,7 @@ compile:file(<anno>File</anno>, <anno>Options</anno> ++ [report_errors, report_w
     </func>
 
     <func>
-      <name name="q" arity="0"/>
+      <name name="q" arity="0" since=""/>
       <fsummary>Quit - shorthand for <c>init:stop()</c>.</fsummary>
       <desc>
         <p>This function is shorthand for <c>init:stop()</c>, that is,
@@ -290,8 +290,8 @@ compile:file(<anno>File</anno>, <anno>Options</anno> ++ [report_errors, report_w
     </func>
 
     <func>
-      <name name="regs" arity="0"/>
-      <name name="nregs" arity="0"/>
+      <name name="regs" arity="0" since=""/>
+      <name name="nregs" arity="0" since=""/>
       <fsummary>Information about registered processes.</fsummary>
       <desc>
         <p><c>regs/0</c> displays information about all registered
@@ -301,7 +301,7 @@ compile:file(<anno>File</anno>, <anno>Options</anno> ++ [report_errors, report_w
     </func>
 
     <func>
-      <name name="uptime" arity="0"/>
+      <name name="uptime" arity="0" since="OTP 18.0"/>
       <fsummary>Print node uptime.</fsummary>
       <desc>
         <p>Prints the node uptime (as specified by
@@ -310,7 +310,7 @@ compile:file(<anno>File</anno>, <anno>Options</anno> ++ [report_errors, report_w
     </func>
 
     <func>
-      <name>xm(ModSpec) -> void()</name>
+      <name since="">xm(ModSpec) -> void()</name>
       <fsummary>Cross-reference check a module.</fsummary>
       <type>
         <v>ModSpec = Module | Filename</v>
@@ -325,7 +325,7 @@ compile:file(<anno>File</anno>, <anno>Options</anno> ++ [report_errors, report_w
     </func>
 
     <func>
-      <name>y(File) -> YeccRet</name>
+      <name since="">y(File) -> YeccRet</name>
       <fsummary>Generate an LALR-1 parser.</fsummary>
       <type>
         <v>File = name()</v>
@@ -344,7 +344,7 @@ yecc:file(File)</code>
     </func>
 
     <func>
-      <name>y(File, Options) -> YeccRet</name>
+      <name since="">y(File, Options) -> YeccRet</name>
       <fsummary>Generate an LALR-1 parser.</fsummary>
       <type>
         <v>File = name()</v>
diff --git a/lib/stdlib/doc/src/calendar.xml b/lib/stdlib/doc/src/calendar.xml
index 5aee635c38..518a085c89 100644
--- a/lib/stdlib/doc/src/calendar.xml
+++ b/lib/stdlib/doc/src/calendar.xml
@@ -28,7 +28,7 @@
     <date>1996-11-05</date>
     <rev>B</rev>
   </header>
-  <module>calendar</module>
+  <module since="">calendar</module>
   <modulesummary>Local and universal time, day of the week, date and time
     conversions.</modulesummary>
   <description>
@@ -128,8 +128,8 @@
 
   <funcs>
     <func>
-      <name name="date_to_gregorian_days" arity="1"/>
-      <name name="date_to_gregorian_days" arity="3"/>
+      <name name="date_to_gregorian_days" arity="1" since=""/>
+      <name name="date_to_gregorian_days" arity="3" since=""/>
       <fsummary>Compute the number of days from year 0 up to the specified
         date.</fsummary>
       <type variable="Date" name_i="1"/>
@@ -143,7 +143,7 @@
     </func>
 
     <func>
-      <name name="datetime_to_gregorian_seconds" arity="1"/>
+      <name name="datetime_to_gregorian_seconds" arity="1" since=""/>
       <fsummary>Compute the number of seconds from year 0 up to the specified
         date and time.</fsummary>
       <desc>
@@ -153,8 +153,8 @@
     </func>
 
     <func>
-      <name name="day_of_the_week" arity="1"/>
-      <name name="day_of_the_week" arity="3"/>
+      <name name="day_of_the_week" arity="1" since=""/>
+      <name name="day_of_the_week" arity="3" since=""/>
       <fsummary>Compute the day of the week.</fsummary>
       <type variable="Date" name_i="1"/>
       <type variable="Year"/>
@@ -169,7 +169,7 @@
     </func>
 
     <func>
-      <name name="gregorian_days_to_date" arity="1"/>
+      <name name="gregorian_days_to_date" arity="1" since=""/>
       <fsummary>Compute the date from the number of gregorian days.</fsummary>
       <desc>
         <p>Computes the date from the specified number of gregorian days.</p>
@@ -177,7 +177,7 @@
     </func>
 
     <func>
-      <name name="gregorian_seconds_to_datetime" arity="1"/>
+      <name name="gregorian_seconds_to_datetime" arity="1" since=""/>
       <fsummary>Compute the date and time from the number of gregorian seconds.
       </fsummary>
       <desc>
@@ -187,7 +187,7 @@
     </func>
 
     <func>
-      <name name="is_leap_year" arity="1"/>
+      <name name="is_leap_year" arity="1" since=""/>
       <fsummary>Check if the year is a leap year.</fsummary>
       <desc>
         <p>Checks if the specified year is a leap year.</p>
@@ -195,7 +195,7 @@
     </func>
 
     <func>
-      <name name="iso_week_number" arity="0"/>
+      <name name="iso_week_number" arity="0" since="OTP R14B02"/>
       <fsummary>Compute the ISO week number for the actual date.</fsummary>
       <desc>
         <p>Returns tuple <c>{Year, WeekNum}</c> representing
@@ -206,7 +206,7 @@
     </func>
 
     <func>
-      <name name="iso_week_number" arity="1"/>
+      <name name="iso_week_number" arity="1" since="OTP R14B02"/>
       <fsummary>Compute the ISO week number for the specified date.</fsummary>
       <desc>
         <p>Returns tuple <c>{Year, WeekNum}</c> representing
@@ -215,7 +215,7 @@
     </func>
 
     <func>
-      <name name="last_day_of_the_month" arity="2"/>
+      <name name="last_day_of_the_month" arity="2" since=""/>
       <fsummary>Compute the number of days in a month.</fsummary>
       <desc>
         <p>Computes the number of days in a month.</p>
@@ -223,7 +223,7 @@
     </func>
 
     <func>
-      <name name="local_time" arity="0"/>
+      <name name="local_time" arity="0" since=""/>
       <fsummary>Compute local time.</fsummary>
       <desc>
         <p>Returns the local time reported by
@@ -232,7 +232,7 @@
     </func>
 
     <func>
-      <name name="local_time_to_universal_time" arity="1"/>
+      <name name="local_time_to_universal_time" arity="1" since=""/>
       <fsummary>Convert from local time to universal time (deprecated).
       </fsummary>
       <desc>
@@ -253,7 +253,7 @@
     </func>
 
     <func>
-      <name name="local_time_to_universal_time_dst" arity="1"/>
+      <name name="local_time_to_universal_time_dst" arity="1" since=""/>
       <fsummary>Convert from local time to universal time(s).</fsummary>
       <desc>
         <p>Converts from local time to Universal Coordinated Time (UTC).
@@ -285,7 +285,7 @@
     </func>
 
     <func>
-      <name name="now_to_datetime" arity="1"/>
+      <name name="now_to_datetime" arity="1" since=""/>
       <fsummary>Convert now to date and time.</fsummary>
       <desc>
         <p>Returns Universal Coordinated Time (UTC)
@@ -296,7 +296,7 @@
     </func>
 
     <func>
-      <name name="now_to_local_time" arity="1"/>
+      <name name="now_to_local_time" arity="1" since=""/>
       <fsummary>Convert now to local date and time.</fsummary>
       <desc>
         <p>Returns local date and time converted from the return value from
@@ -306,7 +306,7 @@
     </func>
 
     <func>
-      <name name="now_to_universal_time" arity="1"/>
+      <name name="now_to_universal_time" arity="1" since=""/>
       <fsummary>Convert now to date and time.</fsummary>
       <desc>
         <p>Returns Universal Coordinated Time (UTC)
@@ -317,8 +317,8 @@
     </func>
 
     <func>
-      <name name="rfc3339_to_system_time" arity="1"/>
-      <name name="rfc3339_to_system_time" arity="2"/>
+      <name name="rfc3339_to_system_time" arity="1" since="OTP 21.0"/>
+      <name name="rfc3339_to_system_time" arity="2" since="OTP 21.0"/>
       <fsummary>Convert from RFC 3339 timestamp to system time.</fsummary>
       <type name="rfc3339_string"/>
       <type name="rfc3339_time_unit"/>
@@ -343,7 +343,7 @@
     </func>
 
     <func>
-      <name name="seconds_to_daystime" arity="1"/>
+      <name name="seconds_to_daystime" arity="1" since=""/>
       <fsummary>Compute days and time from seconds.</fsummary>
       <desc>
         <p>Converts a specified number of seconds into days, hours, minutes,
@@ -354,7 +354,7 @@
     </func>
 
     <func>
-      <name name="seconds_to_time" arity="1"/>
+      <name name="seconds_to_time" arity="1" since=""/>
       <fsummary>Compute time from seconds.</fsummary>
       <type name="secs_per_day"/>
       <desc>
@@ -365,7 +365,7 @@
     </func>
 
     <func>
-      <name name="system_time_to_local_time" arity="2"/>
+      <name name="system_time_to_local_time" arity="2" since="OTP 21.0"/>
       <fsummary>Convert system time to local date and time.</fsummary>
       <desc>
 	<p>Converts a specified system time into local date and time.</p>
@@ -373,8 +373,8 @@
     </func>
 
     <func>
-      <name name="system_time_to_rfc3339" arity="1"/>
-      <name name="system_time_to_rfc3339" arity="2"/>
+      <name name="system_time_to_rfc3339" arity="1" since="OTP 21.0"/>
+      <name name="system_time_to_rfc3339" arity="2" since="OTP 21.0"/>
       <fsummary>Convert from system to RFC 3339 timestamp.</fsummary>
       <type name="offset"/>
       <type name="rfc3339_string"/>
@@ -426,7 +426,7 @@
     </func>
 
     <func>
-      <name name="system_time_to_universal_time" arity="2"/>
+      <name name="system_time_to_universal_time" arity="2" since="OTP 21.0"/>
       <fsummary>Convert system time to universal date and time.</fsummary>
       <desc>
 	<p>Converts a specified system time into universal date and time.</p>
@@ -434,7 +434,7 @@
     </func>
 
     <func>
-      <name name="time_difference" arity="2"/>
+      <name name="time_difference" arity="2" since=""/>
       <fsummary>Compute the difference between two times (deprecated).
       </fsummary>
       <desc>
@@ -449,7 +449,7 @@
     </func>
 
     <func>
-      <name name="time_to_seconds" arity="1"/>
+      <name name="time_to_seconds" arity="1" since=""/>
       <fsummary>Compute the number of seconds since midnight up to the
         specified time.</fsummary>
       <type name="secs_per_day"/>
@@ -460,7 +460,7 @@
     </func>
 
     <func>
-      <name name="universal_time" arity="0"/>
+      <name name="universal_time" arity="0" since=""/>
       <fsummary>Compute universal time.</fsummary>
       <desc>
         <p>Returns the Universal Coordinated Time (UTC)
@@ -470,7 +470,7 @@
     </func>
 
     <func>
-      <name name="universal_time_to_local_time" arity="1"/>
+      <name name="universal_time_to_local_time" arity="1" since=""/>
       <fsummary>Convert from universal time to local time.</fsummary>
       <desc>
         <p>Converts from Universal Coordinated Time (UTC) to local time.
@@ -480,8 +480,8 @@
     </func>
 
     <func>
-      <name name="valid_date" arity="1"/>
-      <name name="valid_date" arity="3"/>
+      <name name="valid_date" arity="1" since=""/>
+      <name name="valid_date" arity="3" since=""/>
       <fsummary>Check if a date is valid</fsummary>
       <type variable="Date" name_i="1"/>
       <type variable="Year"/>
diff --git a/lib/stdlib/doc/src/dets.xml b/lib/stdlib/doc/src/dets.xml
index eb6e32aecf..8b9502a3b1 100644
--- a/lib/stdlib/doc/src/dets.xml
+++ b/lib/stdlib/doc/src/dets.xml
@@ -32,7 +32,7 @@
     <rev>B</rev>
     <file>dets.xml</file>
   </header>
-  <module>dets</module>
+  <module since="">dets</module>
   <modulesummary>A disk-based term storage.</modulesummary>
   <description>
     <p>This module provides a term storage on file. The
@@ -188,7 +188,7 @@
 
   <funcs>
     <func>
-      <name name="all" arity="0"/>
+      <name name="all" arity="0" since=""/>
       <fsummary>Return a list of the names of all open Dets tables on
         this node.</fsummary>
       <desc>
@@ -197,7 +197,7 @@
     </func>
 
     <func>
-      <name name="bchunk" arity="2"/>
+      <name name="bchunk" arity="2" since=""/>
       <fsummary>Return a chunk of objects stored in a Dets table.
       </fsummary>
       <desc>
@@ -227,7 +227,7 @@
     </func>
 
     <func>
-      <name name="close" arity="1"/>
+      <name name="close" arity="1" since=""/>
       <fsummary>Close a Dets table.</fsummary>
       <desc>
         <p>Closes a table. Only processes that have opened a table are
@@ -239,7 +239,7 @@
     </func>
 
     <func>
-      <name name="delete" arity="2"/>
+      <name name="delete" arity="2" since=""/>
       <fsummary>Delete all objects with a specified key from a Dets
         table.</fsummary>
       <desc>
@@ -249,7 +249,7 @@
     </func>
 
     <func>
-      <name name="delete_all_objects" arity="1"/>
+      <name name="delete_all_objects" arity="1" since=""/>
       <fsummary>Delete all objects from a Dets table.</fsummary>
       <desc>
         <p>Deletes all objects from a table in almost constant time.
@@ -259,7 +259,7 @@
     </func>
 
     <func>
-      <name name="delete_object" arity="2"/>
+      <name name="delete_object" arity="2" since=""/>
       <fsummary>Delete a specified object from a Dets table.</fsummary>
       <desc>
         <p>Deletes all instances of a specified object from a table. If a
@@ -270,7 +270,7 @@
     </func>
 
     <func>
-      <name name="first" arity="1"/>
+      <name name="first" arity="1" since=""/>
       <fsummary>Return the first key stored in a Dets table.</fsummary>
       <desc>
         <p>Returns the first key stored in table <c><anno>Name</anno></c>
@@ -295,8 +295,8 @@
     </func>
 
     <func>
-      <name name="foldl" arity="3"/>
-      <name name="foldr" arity="3"/>
+      <name name="foldl" arity="3" since=""/>
+      <name name="foldr" arity="3" since=""/>
       <fsummary>Fold a function over a Dets table.</fsummary>
       <desc>
         <p>Calls <c><anno>Function</anno></c> on successive elements of
@@ -309,7 +309,7 @@
     </func>
 
     <func>
-      <name name="from_ets" arity="2"/>
+      <name name="from_ets" arity="2" since=""/>
       <fsummary>Replace the objects of a Dets table with the objects
         of an ETS table.</fsummary>
       <desc>
@@ -322,7 +322,7 @@
     </func>
 
     <func>
-      <name name="info" arity="1"/>
+      <name name="info" arity="1" since=""/>
       <fsummary>Return information about a Dets table.</fsummary>
       <desc>
         <p>Returns information about table <c><anno>Name</anno></c>
@@ -354,7 +354,7 @@
     </func>
 
     <func>
-      <name name="info" arity="2"/>
+      <name name="info" arity="2" since=""/>
       <fsummary>Return the information associated with a specified item for
         a Dets table.</fsummary>
       <desc>
@@ -455,8 +455,8 @@
     </func>
 
     <func>
-      <name name="init_table" arity="2"/>
-      <name name="init_table" arity="3"/>
+      <name name="init_table" arity="2" since=""/>
+      <name name="init_table" arity="3" since=""/>
       <fsummary>Replace all objects of a Dets table.</fsummary>
       <desc>
         <p>Replaces the existing objects of table <c><anno>Name</anno></c>
@@ -516,7 +516,7 @@
     </func>
 
     <func>
-      <name name="insert" arity="2"/>
+      <name name="insert" arity="2" since=""/>
       <fsummary>Insert one or more objects into a Dets table.</fsummary>
       <desc>
         <p>Inserts one or more objects into the table <c><anno>Name</anno></c>.
@@ -527,7 +527,7 @@
     </func>
 
     <func>
-      <name name="insert_new" arity="2"/>
+      <name name="insert_new" arity="2" since=""/>
       <fsummary>Insert one or more objects into a Dets table.</fsummary>
       <desc>
         <p>Inserts one or more objects into table <c><anno>Name</anno></c>.
@@ -539,7 +539,7 @@
     </func>
 
     <func>
-      <name name="is_compatible_bchunk_format" arity="2"/>
+      <name name="is_compatible_bchunk_format" arity="2" since=""/>
       <fsummary>Test compatibility of chunk data of a table.</fsummary>
       <desc>
         <p>Returns <c>true</c> if it would be possible to initialize
@@ -554,7 +554,7 @@
     </func>
 
     <func>
-      <name name="is_dets_file" arity="1"/>
+      <name name="is_dets_file" arity="1" since=""/>
       <fsummary>Test for a Dets table.</fsummary>
       <desc>
         <p>Returns <c>true</c> if file <c><anno>Filename</anno></c>
@@ -563,7 +563,7 @@
     </func>
 
     <func>
-      <name name="lookup" arity="2"/>
+      <name name="lookup" arity="2" since=""/>
       <fsummary>Return all objects with a specified key stored in a
         Dets table.</fsummary>
       <desc>
@@ -590,7 +590,7 @@ ok
     </func>
 
     <func>
-      <name name="match" arity="1"/>
+      <name name="match" arity="1" since=""/>
       <fsummary>Match a chunk of objects stored in a Dets table and
         return a list of variable bindings.</fsummary>
       <desc>
@@ -606,7 +606,7 @@ ok
     </func>
 
     <func>
-      <name name="match" arity="2"/>
+      <name name="match" arity="2" since=""/>
       <fsummary>Match the objects stored in a Dets table and return a
         list of variable bindings.</fsummary>
       <desc>
@@ -622,7 +622,7 @@ ok
     </func>
 
     <func>
-      <name name="match" arity="3"/>
+      <name name="match" arity="3" since=""/>
       <fsummary>Match the first chunk of objects stored in a Dets table
         and return a list of variable bindings.</fsummary>
       <desc>
@@ -654,7 +654,7 @@ ok
     </func>
 
     <func>
-      <name name="match_delete" arity="2"/>
+      <name name="match_delete" arity="2" since=""/>
       <fsummary>Delete all objects that match a given pattern from a
         Dets table.</fsummary>
       <desc>
@@ -667,7 +667,7 @@ ok
     </func>
 
     <func>
-      <name name="match_object" arity="1"/>
+      <name name="match_object" arity="1" since=""/>
       <fsummary>Match a chunk of objects stored in a Dets table and
         return a list of objects.</fsummary>
       <desc>
@@ -683,7 +683,7 @@ ok
     </func>
 
     <func>
-      <name name="match_object" arity="2"/>
+      <name name="match_object" arity="2" since=""/>
       <fsummary>Match the objects stored in a Dets table and return
         a list of objects.</fsummary>
       <desc>
@@ -702,7 +702,7 @@ ok
     </func>
 
     <func>
-      <name name="match_object" arity="3"/>
+      <name name="match_object" arity="3" since=""/>
       <fsummary>Match the first chunk of objects stored in a Dets table
         and return a list of objects.</fsummary>
       <desc>
@@ -735,7 +735,7 @@ ok
     </func>
 
     <func>
-      <name name="member" arity="2"/>
+      <name name="member" arity="2" since=""/>
       <fsummary>Test for occurrence of a key in a Dets table.</fsummary>
       <desc>
         <p>Works like <seealso marker="#lookup/2"><c>lookup/2</c></seealso>,
@@ -746,7 +746,7 @@ ok
     </func>
 
     <func>
-      <name name="next" arity="2"/>
+      <name name="next" arity="2" since=""/>
       <fsummary>Return the next key in a Dets table.</fsummary>
       <desc>
         <p>Returns either the key following <c><anno>Key1</anno></c> in table
@@ -760,7 +760,7 @@ ok
     </func>
 
     <func>
-      <name name="open_file" arity="1"/>
+      <name name="open_file" arity="1" since=""/>
       <fsummary>Open an existing Dets table.</fsummary>
       <desc>
         <p>Opens an existing table. If the table is not properly closed,
@@ -770,7 +770,7 @@ ok
     </func>
 
     <func>
-      <name name="open_file" arity="2"/>
+      <name name="open_file" arity="2" since=""/>
       <fsummary>Open a Dets table.</fsummary>
       <desc>
         <p>Opens a table. An empty Dets table is created if no file
@@ -872,7 +872,7 @@ ok
     </func>
 
     <func>
-      <name name="pid2name" arity="1"/>
+      <name name="pid2name" arity="1" since=""/>
       <fsummary>Return the name of the Dets table handled by a pid.</fsummary>
       <desc>
         <p>Returns the table name given the pid of a process
@@ -883,7 +883,7 @@ ok
     </func>
 
     <func>
-      <name name="repair_continuation" arity="2"/>
+      <name name="repair_continuation" arity="2" since=""/>
       <fsummary>Repair a continuation from <c>select/1</c> or <c>select/3</c>.
       </fsummary>
       <desc>
@@ -917,7 +917,7 @@ ok
     </func>
 
     <func>
-      <name name="safe_fixtable" arity="2"/>
+      <name name="safe_fixtable" arity="2" since=""/>
       <fsummary>Fix a Dets table for safe traversal.</fsummary>
       <desc>
         <p>If <c><anno>Fix</anno></c> is <c>true</c>, table
@@ -945,7 +945,7 @@ ok
     </func>
 
     <func>
-      <name name="select" arity="1"/>
+      <name name="select" arity="1" since=""/>
       <fsummary>Apply a match specification to some objects stored in a
         Dets table.</fsummary>
       <desc>
@@ -962,7 +962,7 @@ ok
     </func>
 
     <func>
-      <name name="select" arity="2"/>
+      <name name="select" arity="2" since=""/>
       <fsummary>Apply a match specification to all objects stored in a
         Dets table.</fsummary>
       <desc>
@@ -984,7 +984,7 @@ ok
     </func>
 
     <func>
-      <name name="select" arity="3"/>
+      <name name="select" arity="3" since=""/>
       <fsummary>Apply a match specification to the first chunk of objects
         stored in a Dets table.</fsummary>
       <desc>
@@ -1019,7 +1019,7 @@ ok
     </func>
 
     <func>
-      <name name="select_delete" arity="2"/>
+      <name name="select_delete" arity="2" since=""/>
       <fsummary>Delete all objects that match a given pattern from a
         Dets table.</fsummary>
       <desc>
@@ -1036,7 +1036,7 @@ ok
     </func>
 
     <func>
-      <name name="slot" arity="2"/>
+      <name name="slot" arity="2" since=""/>
       <fsummary>Return the list of objects associated with a slot of a
         Dets table.</fsummary>
       <desc>
@@ -1049,7 +1049,7 @@ ok
     </func>
 
     <func>
-      <name name="sync" arity="1"/>
+      <name name="sync" arity="1" since=""/>
       <fsummary>Ensure that all updates made to a Dets table are written
         to disk.</fsummary>
       <desc>
@@ -1064,8 +1064,8 @@ ok
     </func>
 
     <func>
-      <name name="table" arity="1"/>
-      <name name="table" arity="2"/>
+      <name name="table" arity="1" since=""/>
+      <name name="table" arity="2" since=""/>
       <fsummary>Return a QLC query handle.</fsummary>
       <desc>
         <p>Returns a Query List
@@ -1090,8 +1090,8 @@ ok
           </item>
           <item>
             <p><c>select</c> - The table is traversed by calling
-              <seealso marker="dets:select/3"><c>dets:select/3</c></seealso> and
-              <seealso marker="dets:select/1"><c>dets:select/1</c></seealso>.
+              <seealso marker="dets#select/3"><c>dets:select/3</c></seealso> and
+              <seealso marker="dets#select/1"><c>dets:select/1</c></seealso>.
               Option <c>n_objects</c> determines the number of objects
               returned (the third argument of <c>select/3</c>). The
               match specification (the second argument of
@@ -1140,7 +1140,7 @@ true</pre>
     </func>
 
     <func>
-      <name name="to_ets" arity="2"/>
+      <name name="to_ets" arity="2" since=""/>
       <fsummary>Insert all objects of a Dets table into an ETS
         table.</fsummary>
       <desc>
@@ -1153,7 +1153,7 @@ true</pre>
     </func>
 
     <func>
-      <name name="traverse" arity="2"/>
+      <name name="traverse" arity="2" since=""/>
       <fsummary>Apply a function to all or some objects stored in a Dets
         table.</fsummary>
       <desc>
@@ -1192,7 +1192,7 @@ fun(X) -> {continue, X} end.</pre>
     </func>
 
     <func>
-      <name name="update_counter" arity="3"/>
+      <name name="update_counter" arity="3" since=""/>
       <fsummary>Update a counter object stored in a Dets table.
       </fsummary>
       <desc>
diff --git a/lib/stdlib/doc/src/dict.xml b/lib/stdlib/doc/src/dict.xml
index c229a18721..95a98cef12 100644
--- a/lib/stdlib/doc/src/dict.xml
+++ b/lib/stdlib/doc/src/dict.xml
@@ -28,7 +28,7 @@
     <date>1997-01-15</date>
     <rev>B</rev>
   </header>
-  <module>dict</module>
+  <module since="">dict</module>
   <modulesummary>Key-value dictionary.</modulesummary>
   <description>
     <p>This module provides a <c>Key</c>-<c>Value</c> dictionary.
@@ -55,7 +55,7 @@
 
   <funcs>
     <func>
-      <name name="append" arity="3"/>
+      <name name="append" arity="3" since=""/>
       <fsummary>Append a value to keys in a dictionary.</fsummary>
       <desc>
         <p>Appends a new <c><anno>Value</anno></c> to the current list
@@ -65,7 +65,7 @@
     </func>
 
     <func>
-      <name name="append_list" arity="3"/>
+      <name name="append_list" arity="3" since=""/>
       <fsummary>Append new values to keys in a dictionary.</fsummary>
       <desc>
         <p>Appends a list of values <c><anno>ValList</anno></c> to
@@ -77,7 +77,7 @@
     </func>
 
     <func>
-      <name name="erase" arity="2"/>
+      <name name="erase" arity="2" since=""/>
       <fsummary>Erase a key from a dictionary.</fsummary>
       <desc>
         <p>Erases all items with a given key from a dictionary.</p>
@@ -85,7 +85,7 @@
     </func>
 
     <func>
-      <name name="fetch" arity="2"/>
+      <name name="fetch" arity="2" since=""/>
       <fsummary>Look up values in a dictionary.</fsummary>
       <desc>
         <p>Returns the value associated with <c><anno>Key</anno></c>
@@ -98,7 +98,7 @@
     </func>
 
     <func>
-      <name name="fetch_keys" arity="1"/>
+      <name name="fetch_keys" arity="1" since=""/>
       <fsummary>Return all keys in a dictionary.</fsummary>
       <desc>
         <p>Returns a list of all keys in dictionary <c>Dict</c>.</p>
@@ -106,7 +106,7 @@
     </func>
 
     <func>
-      <name name="take" arity="2"/>
+      <name name="take" arity="2" since="OTP 20.0"/>
       <fsummary>Return value and new dictionary without element with this value.</fsummary>
       <desc>
         <p>This function returns value from dictionary and a
@@ -116,7 +116,7 @@
     </func>
 
     <func>
-      <name name="filter" arity="2"/>
+      <name name="filter" arity="2" since=""/>
       <fsummary>Select elements that satisfy a predicate.</fsummary>
       <desc>
         <p><c><anno>Dict2</anno></c> is a dictionary of all keys and values in
@@ -127,7 +127,7 @@
     </func>
 
     <func>
-      <name name="find" arity="2"/>
+      <name name="find" arity="2" since=""/>
       <fsummary>Search for a key in a dictionary.</fsummary>
       <desc>
         <p>Searches for a key in dictionary <c>Dict</c>. Returns
@@ -139,7 +139,7 @@
     </func>
 
     <func>
-      <name name="fold" arity="3"/>
+      <name name="fold" arity="3" since=""/>
       <fsummary>Fold a function over a dictionary.</fsummary>
       <desc>
         <p>Calls <c><anno>Fun</anno></c> on successive keys and values of
@@ -153,7 +153,7 @@
     </func>
 
     <func>
-      <name name="from_list" arity="1"/>
+      <name name="from_list" arity="1" since=""/>
       <fsummary>Convert a list of pairs to a dictionary.</fsummary>
       <desc>
         <p>Converts the <c><anno>Key</anno></c>-<c><anno>Value</anno></c> list
@@ -162,7 +162,7 @@
     </func>
 
     <func>
-      <name name="is_empty" arity="1"/>
+      <name name="is_empty" arity="1" since="OTP 17.0"/>
       <fsummary>Return <c>true</c> if the dictionary is empty.</fsummary>
       <desc>
         <p>Returns <c>true</c> if dictionary <c><anno>Dict</anno></c> has no
@@ -171,7 +171,7 @@
     </func>
 
     <func>
-      <name name="is_key" arity="2"/>
+      <name name="is_key" arity="2" since=""/>
       <fsummary>Test if a key is in a dictionary.</fsummary>
       <desc>
         <p>Tests if <c><anno>Key</anno></c> is contained in
@@ -180,7 +180,7 @@
     </func>
 
     <func>
-      <name name="map" arity="2"/>
+      <name name="map" arity="2" since=""/>
       <fsummary>Map a function over a dictionary.</fsummary>
       <desc>
         <p>Calls <c><anno>Fun</anno></c> on successive keys and values
@@ -190,7 +190,7 @@
     </func>
 
     <func>
-      <name name="merge" arity="3"/>
+      <name name="merge" arity="3" since=""/>
       <fsummary>Merge two dictionaries.</fsummary>
       <desc>
         <p>Merges two dictionaries, <c><anno>Dict1</anno></c> and
@@ -209,7 +209,7 @@ merge(Fun, D1, D2) ->
     </func>
 
     <func>
-      <name name="new" arity="0"/>
+      <name name="new" arity="0" since=""/>
       <fsummary>Create a dictionary.</fsummary>
       <desc>
         <p>Creates a new dictionary.</p>
@@ -217,7 +217,7 @@ merge(Fun, D1, D2) ->
     </func>
 
     <func>
-      <name name="size" arity="1"/>
+      <name name="size" arity="1" since=""/>
       <fsummary>Return the number of elements in a dictionary.</fsummary>
       <desc>
         <p>Returns the number of elements in dictionary
@@ -226,7 +226,7 @@ merge(Fun, D1, D2) ->
     </func>
 
     <func>
-      <name name="store" arity="3"/>
+      <name name="store" arity="3" since=""/>
       <fsummary>Store a value in a dictionary.</fsummary>
       <desc>
         <p>Stores a <c><anno>Key</anno></c>-<c><anno>Value</anno></c> pair in
@@ -237,7 +237,7 @@ merge(Fun, D1, D2) ->
     </func>
 
     <func>
-      <name name="to_list" arity="1"/>
+      <name name="to_list" arity="1" since=""/>
       <fsummary>Convert a dictionary to a list of pairs.</fsummary>
       <desc>
         <p>Converts dictionary <c>Dict</c> to a list representation.</p>
@@ -245,7 +245,7 @@ merge(Fun, D1, D2) ->
     </func>
 
     <func>
-      <name name="update" arity="3"/>
+      <name name="update" arity="3" since=""/>
       <fsummary>Update a value in a dictionary.</fsummary>
       <desc>
         <p>Updates a value in a dictionary by calling <c><anno>Fun</anno></c> on
@@ -255,7 +255,7 @@ merge(Fun, D1, D2) ->
     </func>
 
     <func>
-      <name name="update" arity="4"/>
+      <name name="update" arity="4" since=""/>
       <fsummary>Update a value in a dictionary.</fsummary>
       <desc>
         <p>Updates a value in a dictionary by calling <c><anno>Fun</anno></c> on
@@ -269,7 +269,7 @@ append(Key, Val, D) ->
     </func>
 
     <func>
-      <name name="update_counter" arity="3"/>
+      <name name="update_counter" arity="3" since=""/>
       <fsummary>Increment a value in a dictionary.</fsummary>
       <desc>
         <p>Adds <c><anno>Increment</anno></c> to the value associated with
diff --git a/lib/stdlib/doc/src/digraph.xml b/lib/stdlib/doc/src/digraph.xml
index a5252b443b..cf2c0844c9 100644
--- a/lib/stdlib/doc/src/digraph.xml
+++ b/lib/stdlib/doc/src/digraph.xml
@@ -32,7 +32,7 @@
     <rev>C</rev>
     <file>digraph.xml</file>
   </header>
-  <module>digraph</module>
+  <module since="">digraph</module>
   <modulesummary>Directed graphs.</modulesummary>
   <description>
     <p>This module provides a version of labeled
@@ -144,9 +144,9 @@
 
   <funcs>
     <func>
-      <name name="add_edge" arity="3"/>
-      <name name="add_edge" arity="4"/>
-      <name name="add_edge" arity="5"/>
+      <name name="add_edge" arity="3" since=""/>
+      <name name="add_edge" arity="4" since=""/>
+      <name name="add_edge" arity="5" since=""/>
       <fsummary>Add an edge to a digraph.</fsummary>
       <type name="add_edge_err_rsn"/>
       <desc>
@@ -183,9 +183,9 @@
     </func>
 
     <func>
-      <name name="add_vertex" arity="1"/>
-      <name name="add_vertex" arity="2"/>
-      <name name="add_vertex" arity="3"/>
+      <name name="add_vertex" arity="1" since=""/>
+      <name name="add_vertex" arity="2" since=""/>
+      <name name="add_vertex" arity="3" since=""/>
       <fsummary>Add or modify a vertex of a digraph.</fsummary>
       <desc>
         <p><c>add_vertex/3</c> creates (or modifies) vertex
@@ -204,7 +204,7 @@
     </func>
 
     <func>
-      <name name="del_edge" arity="2"/>
+      <name name="del_edge" arity="2" since=""/>
       <fsummary>Delete an edge from a digraph.</fsummary>
       <desc>
         <p>Deletes edge <c><anno>E</anno></c> from digraph
@@ -213,7 +213,7 @@
     </func>
 
     <func>
-      <name name="del_edges" arity="2"/>
+      <name name="del_edges" arity="2" since=""/>
       <fsummary>Delete edges from a digraph.</fsummary>
       <desc>
         <p>Deletes the edges in list <c><anno>Edges</anno></c> from digraph
@@ -222,7 +222,7 @@
     </func>
 
     <func>
-      <name name="del_path" arity="3"/>
+      <name name="del_path" arity="3" since=""/>
       <fsummary>Delete paths from a digraph.</fsummary>
       <desc>
         <p>Deletes edges from digraph <c><anno>G</anno></c> until there are no
@@ -252,7 +252,7 @@
     </func>
 
     <func>
-      <name name="del_vertex" arity="2"/>
+      <name name="del_vertex" arity="2" since=""/>
       <fsummary>Delete a vertex from a digraph.</fsummary>
       <desc>
         <p>Deletes vertex <c><anno>V</anno></c> from digraph
@@ -265,7 +265,7 @@
     </func>
 
     <func>
-      <name name="del_vertices" arity="2"/>
+      <name name="del_vertices" arity="2" since=""/>
       <fsummary>Delete vertices from a digraph.</fsummary>
       <desc>
         <p>Deletes the vertices in list <c><anno>Vertices</anno></c> from
@@ -274,7 +274,7 @@
     </func>
 
     <func>
-      <name name="delete" arity="1"/>
+      <name name="delete" arity="1" since=""/>
       <fsummary>Delete a digraph.</fsummary>
       <desc>
         <p>Deletes digraph <c><anno>G</anno></c>. This call is important
@@ -285,7 +285,7 @@
     </func>
 
     <func>
-      <name name="edge" arity="2"/>
+      <name name="edge" arity="2" since=""/>
       <fsummary>Return the vertices and the label of an edge of a digraph.
       </fsummary>
       <desc>
@@ -303,7 +303,7 @@
     </func>
 
     <func>
-      <name name="edges" arity="1"/>
+      <name name="edges" arity="1" since=""/>
       <fsummary>Return all edges of a digraph.</fsummary>
       <desc>
         <p>Returns a list of all edges of digraph <c><anno>G</anno></c>, in
@@ -312,7 +312,7 @@
     </func>
 
     <func>
-      <name name="edges" arity="2"/>
+      <name name="edges" arity="2" since=""/>
       <fsummary>Return the edges emanating from or incident on a vertex of
         a digraph.</fsummary>
       <desc>
@@ -324,7 +324,7 @@
     </func>
 
     <func>
-      <name name="get_cycle" arity="2"/>
+      <name name="get_cycle" arity="2" since=""/>
       <fsummary>Find one cycle in a digraph.</fsummary>
       <desc>
         <p>If a <seealso marker="#simple_cycle">simple cycle</seealso> of
@@ -341,7 +341,7 @@
     </func>
 
     <func>
-      <name name="get_path" arity="3"/>
+      <name name="get_path" arity="3" since=""/>
       <fsummary>Find one path in a digraph.</fsummary>
       <desc>
         <p>Tries to find
@@ -357,7 +357,7 @@
     </func>
 
     <func>
-      <name name="get_short_cycle" arity="2"/>
+      <name name="get_short_cycle" arity="2" since=""/>
       <fsummary>Find one short cycle in a digraph.</fsummary>
       <desc>
         <p>Tries to find an as short as possible
@@ -375,7 +375,7 @@
     </func>
 
     <func>
-      <name name="get_short_path" arity="3"/>
+      <name name="get_short_path" arity="3" since=""/>
       <fsummary>Find one short path in a digraph.</fsummary>
       <desc>
         <p>Tries to find an as short as possible
@@ -392,7 +392,7 @@
     </func>
 
     <func>
-      <name name="in_degree" arity="2"/>
+      <name name="in_degree" arity="2" since=""/>
       <fsummary>Return the in-degree of a vertex of a digraph.</fsummary>
       <desc>
         <p>Returns the <seealso marker="#in_degree">in-degree</seealso> of
@@ -401,7 +401,7 @@
     </func>
 
     <func>
-      <name name="in_edges" arity="2"/>
+      <name name="in_edges" arity="2" since=""/>
       <fsummary>Return all edges incident on a vertex of a digraph.</fsummary>
       <desc>
         <p>Returns a list of all
@@ -412,7 +412,7 @@
     </func>
 
     <func>
-      <name name="in_neighbours" arity="2"/>
+      <name name="in_neighbours" arity="2" since=""/>
       <fsummary>Return all in-neighbors of a vertex of  a digraph.</fsummary>
       <desc>
         <p>Returns a list of
@@ -423,7 +423,7 @@
     </func>
 
     <func>
-      <name name="info" arity="1"/>
+      <name name="info" arity="1" since=""/>
       <fsummary>Return information about a digraph.</fsummary>
       <type name="d_cyclicity"/>
       <type name="d_protection"/>
@@ -453,7 +453,7 @@
     </func>
 
     <func>
-      <name name="new" arity="0"/>
+      <name name="new" arity="0" since=""/>
       <fsummary>Return a protected empty digraph, where cycles are allowed.
       </fsummary>
       <desc>
@@ -462,7 +462,7 @@
     </func>
 
     <func>
-      <name name="new" arity="1"/>
+      <name name="new" arity="1" since=""/>
       <fsummary>Create a new empty digraph.</fsummary>
       <type variable="Type"/>
       <type name="d_type"/>
@@ -492,7 +492,7 @@
     </func>
 
     <func>
-      <name name="no_edges" arity="1"/>
+      <name name="no_edges" arity="1" since=""/>
       <fsummary>Return the number of edges of a digraph.</fsummary>
       <desc>
         <p>Returns the number of edges of digraph <c><anno>G</anno></c>.</p>
@@ -500,7 +500,7 @@
     </func>
 
     <func>
-      <name name="no_vertices" arity="1"/>
+      <name name="no_vertices" arity="1" since=""/>
       <fsummary>Return the number of vertices of a digraph.</fsummary>
       <desc>
         <p>Returns the number of vertices of digraph <c><anno>G</anno></c>.</p>
@@ -508,7 +508,7 @@
     </func>
 
     <func>
-      <name name="out_degree" arity="2"/>
+      <name name="out_degree" arity="2" since=""/>
       <fsummary>Return the out-degree of a vertex of a digraph.</fsummary>
       <desc>
         <p>Returns the <seealso marker="#out_degree">out-degree</seealso> of
@@ -517,7 +517,7 @@
     </func>
 
     <func>
-      <name name="out_edges" arity="2"/>
+      <name name="out_edges" arity="2" since=""/>
       <fsummary>Return all edges emanating from a vertex of a digraph.
       </fsummary>
       <desc>
@@ -529,7 +529,7 @@
     </func>
 
     <func>
-      <name name="out_neighbours" arity="2"/>
+      <name name="out_neighbours" arity="2" since=""/>
       <fsummary>Return all out-neighbors of a vertex of a digraph.</fsummary>
       <desc>
         <p>Returns a list of 
@@ -540,7 +540,7 @@
     </func>
 
     <func>
-      <name name="vertex" arity="2"/>
+      <name name="vertex" arity="2" since=""/>
       <fsummary>Return the label of a vertex of a digraph.</fsummary>
       <desc>
         <p>Returns <c>{<anno>V</anno>,&nbsp;<anno>Label</anno>}</c>,
@@ -553,7 +553,7 @@
     </func>
 
     <func>
-      <name name="vertices" arity="1"/>
+      <name name="vertices" arity="1" since=""/>
       <fsummary>Return all vertices of a digraph.</fsummary>
       <desc>
         <p>Returns a list of all vertices of digraph <c><anno>G</anno></c>, in
diff --git a/lib/stdlib/doc/src/digraph_utils.xml b/lib/stdlib/doc/src/digraph_utils.xml
index cb316e5b93..a23b02c6c1 100644
--- a/lib/stdlib/doc/src/digraph_utils.xml
+++ b/lib/stdlib/doc/src/digraph_utils.xml
@@ -32,7 +32,7 @@
     <rev>PA1</rev>
     <file>digraph_utils.xml</file>
   </header>
-  <module>digraph_utils</module>
+  <module since="">digraph_utils</module>
   <modulesummary>Algorithms for directed graphs.</modulesummary>
   <description>
     <p>This module provides algorithms based on depth-first traversal of
@@ -154,7 +154,7 @@
 
   <funcs>
     <func>
-      <name name="arborescence_root" arity="1"/>
+      <name name="arborescence_root" arity="1" since=""/>
       <fsummary>Check if a digraph is an arborescence.</fsummary>
       <desc>
         <p>Returns <c>{yes, <anno>Root</anno>}</c> if <c><anno>Root</anno></c>
@@ -164,7 +164,7 @@
     </func>
 
     <func>
-      <name name="components" arity="1"/>
+      <name name="components" arity="1" since=""/>
       <fsummary>Return the components of a digraph.</fsummary>
       <desc>
         <p>Returns a list
@@ -177,7 +177,7 @@
     </func>
 
     <func>
-      <name name="condensation" arity="1"/>
+      <name name="condensation" arity="1" since=""/>
       <fsummary>Return a condensed graph of a digraph.</fsummary>
       <desc>
         <p>Creates a digraph where the vertices are
@@ -202,7 +202,7 @@
     </func>
 
     <func>
-      <name name="cyclic_strong_components" arity="1"/>
+      <name name="cyclic_strong_components" arity="1" since=""/>
       <fsummary>Return the cyclic strong components of a digraph.</fsummary>
       <desc>
         <p>Returns a list of <seealso marker="#strong_components">strongly
@@ -218,7 +218,7 @@
     </func>
 
     <func>
-      <name name="is_acyclic" arity="1"/>
+      <name name="is_acyclic" arity="1" since=""/>
       <fsummary>Check if a digraph is acyclic.</fsummary>
       <desc>
         <p>Returns <c>true</c> if and only if digraph
@@ -228,7 +228,7 @@
     </func>
 
     <func>
-      <name name="is_arborescence" arity="1"/>
+      <name name="is_arborescence" arity="1" since=""/>
       <fsummary>Check if a digraph is an arborescence.</fsummary>
       <desc>
         <p>Returns <c>true</c> if and only if digraph
@@ -238,7 +238,7 @@
     </func>
 
     <func>
-      <name name="is_tree" arity="1"/>
+      <name name="is_tree" arity="1" since=""/>
       <fsummary>Check if a digraph is a tree.</fsummary>
       <desc>
         <p>Returns <c>true</c> if and only if digraph
@@ -248,7 +248,7 @@
     </func>
 
     <func>
-      <name name="loop_vertices" arity="1"/>
+      <name name="loop_vertices" arity="1" since=""/>
       <fsummary>Return the vertices of a digraph included in some loop.
       </fsummary>
       <desc>
@@ -258,7 +258,7 @@
     </func>
 
     <func>
-      <name name="postorder" arity="1"/>
+      <name name="postorder" arity="1" since=""/>
       <fsummary>Return the vertices of a digraph in postorder.</fsummary>
       <desc>
         <p>Returns all vertices of digraph <c><anno>Digraph</anno></c>.
@@ -273,7 +273,7 @@
     </func>
 
     <func>
-      <name name="preorder" arity="1"/>
+      <name name="preorder" arity="1" since=""/>
       <fsummary>Return the vertices of a digraph in preorder.</fsummary>
       <desc>
         <p>Returns all vertices of digraph <c><anno>Digraph</anno></c>.
@@ -285,7 +285,7 @@
     </func>
 
     <func>
-      <name name="reachable" arity="2"/>
+      <name name="reachable" arity="2" since=""/>
       <fsummary>Return the vertices reachable from some vertices of a digraph.
       </fsummary>
       <desc>
@@ -300,7 +300,7 @@
     </func>
 
     <func>
-      <name name="reachable_neighbours" arity="2"/>
+      <name name="reachable_neighbours" arity="2" since=""/>
       <fsummary>Return the neighbors reachable from some vertices of a
         digraph.</fsummary>
       <desc>
@@ -316,7 +316,7 @@
     </func>
 
     <func>
-      <name name="reaching" arity="2"/>
+      <name name="reaching" arity="2" since=""/>
       <fsummary>Return the vertices that reach some vertices of a digraph.
       </fsummary>
       <desc>
@@ -330,7 +330,7 @@
     </func>
 
     <func>
-      <name name="reaching_neighbours" arity="2"/>
+      <name name="reaching_neighbours" arity="2" since=""/>
       <fsummary>Return the neighbors that reach some vertices of a digraph.
       </fsummary>
       <desc>
@@ -345,7 +345,7 @@
     </func>
 
     <func>
-      <name name="strong_components" arity="1"/>
+      <name name="strong_components" arity="1" since=""/>
       <fsummary>Return the strong components of a digraph.</fsummary>
       <desc>
         <p>Returns a list of <seealso marker="#strong_components">strongly
@@ -359,8 +359,8 @@
     </func>
 
     <func>
-      <name name="subgraph" arity="2"/>
-      <name name="subgraph" arity="3"/>
+      <name name="subgraph" arity="2" since=""/>
+      <name name="subgraph" arity="3" since=""/>
       <fsummary>Return a subgraph of a digraph.</fsummary>
       <desc>
         <p>Creates a maximal <seealso marker="#subgraph">subgraph</seealso>
@@ -371,7 +371,7 @@
           the default, the type of <c><anno>Digraph</anno></c> is used
           for the subgraph as well. Otherwise the option value of <c>type</c>
           is used as argument to
-          <seealso marker="digraph:new/1"><c>digraph:new/1</c></seealso>.</p>
+        <seealso marker="digraph#new/1"><c>digraph:new/1</c></seealso>.</p>
         <p>If the value of option <c>keep_labels</c> is <c>true</c>,
           which is the default,
           the <seealso marker="#label">labels</seealso> of vertices and edges
@@ -387,7 +387,7 @@
     </func>
 
     <func>
-      <name name="topsort" arity="1"/>
+      <name name="topsort" arity="1" since=""/>
       <fsummary>Return a topological sorting of the vertices of a digraph.
       </fsummary>
       <desc>
diff --git a/lib/stdlib/doc/src/epp.xml b/lib/stdlib/doc/src/epp.xml
index d803d259aa..110c1cea2c 100644
--- a/lib/stdlib/doc/src/epp.xml
+++ b/lib/stdlib/doc/src/epp.xml
@@ -32,7 +32,7 @@
     <rev>B</rev>
     <file>epp.xml</file>
   </header>
-  <module>epp</module>
+  <module since="">epp</module>
   <modulesummary>An Erlang code preprocessor.</modulesummary>
   <description>
     <p>The Erlang code preprocessor includes functions that are used by the
@@ -76,7 +76,7 @@
 
   <funcs>
     <func>
-      <name name="close" arity="1"/>
+      <name name="close" arity="1" since=""/>
       <fsummary>Close the preprocessing of the file associated with <c>Epp</c>.
       </fsummary>
       <desc>
@@ -85,7 +85,7 @@
     </func>
 
     <func>
-      <name name="default_encoding" arity="0"/>
+      <name name="default_encoding" arity="0" since="OTP R16B"/>
       <fsummary>Return the default encoding of Erlang source files.</fsummary>
       <desc>
         <p>Returns the default encoding of Erlang source files.</p>
@@ -93,7 +93,7 @@
     </func>
 
     <func>
-      <name name="encoding_to_string" arity="1"/>
+      <name name="encoding_to_string" arity="1" since="OTP R16B"/>
       <fsummary>Return a string representation of an encoding.</fsummary>
       <desc>
         <p>Returns a string representation of an encoding. The string
@@ -107,7 +107,7 @@
     </func>
 
     <func>
-      <name name="format_error" arity="1"/>
+      <name name="format_error" arity="1" since="OTP R14B03"/>
       <fsummary>Format an error descriptor.</fsummary>
       <desc>
         <p>Takes an <c><anno>ErrorDescriptor</anno></c> and returns
@@ -120,7 +120,7 @@
     </func>
 
     <func>
-      <name name="open" arity="1"/>
+      <name name="open" arity="1" since="OTP 17.0"/>
       <fsummary>Open a file for preprocessing.</fsummary>
       <desc>
         <p>Opens a file for preprocessing.</p>
@@ -136,7 +136,7 @@
     </func>
 
     <func>
-      <name name="open" arity="2"/>
+      <name name="open" arity="2" since=""/>
       <fsummary>Open a file for preprocessing.</fsummary>
       <desc>
         <p>Equivalent to
@@ -145,7 +145,7 @@
     </func>
 
     <func>
-      <name name="open" arity="3"/>
+      <name name="open" arity="3" since=""/>
       <fsummary>Open a file for preprocessing.</fsummary>
       <desc>
         <p>Equivalent to <c>epp:open([{name, FileName}, {includes, IncludePath},
@@ -154,7 +154,7 @@
     </func>
 
     <func>
-      <name name="parse_erl_form" arity="1"/>
+      <name name="parse_erl_form" arity="1" since=""/>
       <fsummary>Return the next Erlang form from the opened Erlang source file.
       </fsummary>
       <type name="warning_info"/>
@@ -167,7 +167,7 @@
     </func>
 
     <func>
-      <name name="parse_file" arity="2"/>
+      <name name="parse_file" arity="2" since="OTP 17.0"/>
       <fsummary>Preprocess and parse an Erlang source file.</fsummary>
       <desc>
         <p>Preprocesses and parses an Erlang source file.
@@ -185,7 +185,7 @@
     </func>
 
     <func>
-      <name name="parse_file" arity="3"/>
+      <name name="parse_file" arity="3" since=""/>
       <fsummary>Preprocess and parse an Erlang source file.</fsummary>
       <desc>
         <p>Equivalent to <c>epp:parse_file(FileName, [{includes, IncludePath},
@@ -194,8 +194,8 @@
     </func>
 
     <func>
-      <name name="read_encoding" arity="1"/>
-      <name name="read_encoding" arity="2"/>
+      <name name="read_encoding" arity="1" since="OTP R16B"/>
+      <name name="read_encoding" arity="2" since="OTP R16B"/>
       <fsummary>Read the encoding from a file.</fsummary>
       <desc>
         <p>Read the <seealso marker="#encoding">encoding</seealso> from
@@ -209,8 +209,8 @@
     </func>
 
     <func>
-      <name name="read_encoding_from_binary" arity="1"/>
-      <name name="read_encoding_from_binary" arity="2"/>
+      <name name="read_encoding_from_binary" arity="1" since="OTP R16B"/>
+      <name name="read_encoding_from_binary" arity="2" since="OTP R16B"/>
       <fsummary>Read the encoding from a binary.</fsummary>
       <desc>
         <p>Read the <seealso marker="#encoding">encoding</seealso> from
@@ -224,7 +224,7 @@
     </func>
 
     <func>
-      <name name="set_encoding" arity="1"/>
+      <name name="set_encoding" arity="1" since="OTP R16B"/>
       <fsummary>Read and set the encoding of an I/O device.</fsummary>
       <desc>
         <p>Reads the <seealso marker="#encoding">encoding</seealso> from
@@ -239,7 +239,7 @@
     </func>
 
     <func>
-      <name name="set_encoding" arity="2"/>
+      <name name="set_encoding" arity="2" since="OTP 17.0"/>
       <fsummary>Read and set the encoding of an I/O device.</fsummary>
       <desc>
         <p>Reads the <seealso marker="#encoding">encoding</seealso> from
diff --git a/lib/stdlib/doc/src/erl_anno.xml b/lib/stdlib/doc/src/erl_anno.xml
index f316f63d98..dff93619ab 100644
--- a/lib/stdlib/doc/src/erl_anno.xml
+++ b/lib/stdlib/doc/src/erl_anno.xml
@@ -34,7 +34,7 @@
     <rev>A</rev>
     <file>erl_anno.xml</file>
   </header>
-  <module>erl_anno</module>
+  <module since="OTP 18.0">erl_anno</module>
   <modulesummary>Abstract datatype for the annotations of the Erlang Compiler.
   </modulesummary>
 
@@ -135,7 +135,7 @@
 
   <funcs>
     <func>
-      <name name="column" arity="1"/>
+      <name name="column" arity="1" since="OTP 18.0"/>
       <fsummary>Return the column.</fsummary>
       <type name="column"></type>
       <desc>
@@ -144,7 +144,7 @@
     </func>
 
     <func>
-      <name name="end_location" arity="1"/>
+      <name name="end_location" arity="1" since="OTP 18.0"/>
       <fsummary>Return the end location of the text.</fsummary>
       <type name="location"></type>
       <desc>
@@ -155,7 +155,7 @@
     </func>
 
     <func>
-      <name name="file" arity="1"/>
+      <name name="file" arity="1" since="OTP 18.0"/>
       <fsummary>Return the filename.</fsummary>
       <type name="filename"></type>
       <desc>
@@ -165,7 +165,7 @@
     </func>
 
     <func>
-      <name name="from_term" arity="1"/>
+      <name name="from_term" arity="1" since="OTP 18.0"/>
       <fsummary>Return annotations given a term.</fsummary>
       <desc>
         <p>Returns annotations with representation <anno>Term</anno>.</p>
@@ -174,7 +174,7 @@
     </func>
 
     <func>
-      <name name="generated" arity="1"/>
+      <name name="generated" arity="1" since="OTP 18.0"/>
       <fsummary>Return the generated Boolean.</fsummary>
       <type name="generated"></type>
       <desc>
@@ -185,7 +185,7 @@
     </func>
 
     <func>
-      <name name="is_anno" arity="1"/>
+      <name name="is_anno" arity="1" since="OTP 18.0"/>
       <fsummary>Test for a collection of annotations.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <anno>Term</anno> is a collection of
@@ -194,7 +194,7 @@
     </func>
 
     <func>
-      <name name="line" arity="1"/>
+      <name name="line" arity="1" since="OTP 18.0"/>
       <fsummary>Return the line.</fsummary>
       <type name="line"></type>
       <desc>
@@ -203,7 +203,7 @@
     </func>
 
     <func>
-      <name name="location" arity="1"/>
+      <name name="location" arity="1" since="OTP 18.0"/>
       <fsummary>Return the location.</fsummary>
       <type name="location"></type>
       <desc>
@@ -212,7 +212,7 @@
     </func>
 
     <func>
-      <name name="new" arity="1"/>
+      <name name="new" arity="1" since="OTP 18.0"/>
       <fsummary>Create a new collection of annotations.</fsummary>
       <type name="location"></type>
       <desc>
@@ -221,7 +221,7 @@
     </func>
 
     <func>
-      <name name="set_file" arity="2"/>
+      <name name="set_file" arity="2" since="OTP 18.0"/>
       <fsummary>Modify the filename.</fsummary>
       <type name="filename"></type>
       <desc>
@@ -230,7 +230,7 @@
     </func>
 
     <func>
-      <name name="set_generated" arity="2"/>
+      <name name="set_generated" arity="2" since="OTP 18.0"/>
       <fsummary>Modify the generated marker.</fsummary>
       <type name="generated"></type>
       <desc>
@@ -240,7 +240,7 @@
     </func>
 
     <func>
-      <name name="set_line" arity="2"/>
+      <name name="set_line" arity="2" since="OTP 18.0"/>
       <fsummary>Modify the line.</fsummary>
       <type name="line"></type>
       <desc>
@@ -249,7 +249,7 @@
     </func>
 
     <func>
-      <name name="set_location" arity="2"/>
+      <name name="set_location" arity="2" since="OTP 18.0"/>
       <fsummary>Modify the location.</fsummary>
       <type name="location"></type>
       <desc>
@@ -258,7 +258,7 @@
     </func>
 
     <func>
-      <name name="set_record" arity="2"/>
+      <name name="set_record" arity="2" since="OTP 18.0"/>
       <fsummary>Modify the record marker.</fsummary>
       <type name="record"></type>
       <desc>
@@ -267,7 +267,7 @@
     </func>
 
     <func>
-      <name name="set_text" arity="2"/>
+      <name name="set_text" arity="2" since="OTP 18.0"/>
       <fsummary>Modify the text.</fsummary>
       <type name="text"></type>
       <desc>
@@ -276,7 +276,7 @@
     </func>
     <func>
 
-      <name name="text" arity="1"/>
+      <name name="text" arity="1" since="OTP 18.0"/>
       <fsummary>Return the text.</fsummary>
       <type name="text"></type>
       <desc>
@@ -286,7 +286,7 @@
     </func>
 
     <func>
-      <name name="to_term" arity="1"/>
+      <name name="to_term" arity="1" since="OTP 18.0"/>
       <fsummary>Return the term representing a collection of annotations.
       </fsummary>
       <desc>
diff --git a/lib/stdlib/doc/src/erl_eval.xml b/lib/stdlib/doc/src/erl_eval.xml
index 1c0f7f062f..813cbecd89 100644
--- a/lib/stdlib/doc/src/erl_eval.xml
+++ b/lib/stdlib/doc/src/erl_eval.xml
@@ -32,7 +32,7 @@
     <rev>B</rev>
     <file>erl_eval.xml</file>
   </header>
-  <module>erl_eval</module>
+  <module since="">erl_eval</module>
   <modulesummary>The Erlang meta interpreter.</modulesummary>
   <description>
     <p>This module provides an interpreter for Erlang expressions. The
@@ -96,7 +96,7 @@
 
   <funcs>
     <func>
-      <name name="add_binding" arity="3"/>
+      <name name="add_binding" arity="3" since=""/>
       <fsummary>Add a binding.</fsummary>
       <desc>
         <p>Adds binding <c><anno>Name</anno>=<anno>Value</anno></c>
@@ -106,7 +106,7 @@
     </func>
 
     <func>
-      <name name="binding" arity="2"/>
+      <name name="binding" arity="2" since=""/>
       <fsummary>Return bindings.</fsummary>
       <desc>
         <p>Returns the binding of <c><anno>Name</anno></c>
@@ -115,7 +115,7 @@
     </func>
 
     <func>
-      <name name="bindings" arity="1"/>
+      <name name="bindings" arity="1" since=""/>
       <fsummary>Return bindings.</fsummary>
       <desc>
         <p>Returns the list of bindings contained in the binding
@@ -124,7 +124,7 @@
     </func>
 
     <func>
-      <name name="del_binding" arity="2"/>
+      <name name="del_binding" arity="2" since=""/>
       <fsummary>Delete a binding.</fsummary>
       <desc>
         <p>Removes the binding of <c><anno>Name</anno></c>
@@ -134,10 +134,10 @@
     </func>
 
     <func>
-      <name name="expr" arity="2"/>
-      <name name="expr" arity="3"/>
-      <name name="expr" arity="4"/>
-      <name name="expr" arity="5"/>
+      <name name="expr" arity="2" since=""/>
+      <name name="expr" arity="3" since=""/>
+      <name name="expr" arity="4" since=""/>
+      <name name="expr" arity="5" since=""/>
       <fsummary>Evaluate expression.</fsummary>
       <desc>
         <p>Evaluates <c><anno>Expression</anno></c> with the set of bindings
@@ -157,9 +157,9 @@
     </func>
 
     <func>
-      <name name="expr_list" arity="2"/>
-      <name name="expr_list" arity="3"/>
-      <name name="expr_list" arity="4"/>
+      <name name="expr_list" arity="2" since=""/>
+      <name name="expr_list" arity="3" since=""/>
+      <name name="expr_list" arity="4" since=""/>
       <fsummary>Evaluate a list of expressions.</fsummary>
       <desc>
         <p>Evaluates a list of expressions in parallel, using the same
@@ -174,9 +174,9 @@
     </func>
 
     <func>
-      <name name="exprs" arity="2"/>
-      <name name="exprs" arity="3"/>
-      <name name="exprs" arity="4"/>
+      <name name="exprs" arity="2" since=""/>
+      <name name="exprs" arity="3" since=""/>
+      <name name="exprs" arity="4" since=""/>
       <fsummary>Evaluate expressions.</fsummary>
       <desc>
         <p>Evaluates <c><anno>Expressions</anno></c> with the set of bindings
@@ -197,7 +197,7 @@
     </func>
 
     <func>
-      <name name="new_bindings" arity="0"/>
+      <name name="new_bindings" arity="0" since=""/>
       <fsummary>Return a bindings structure.</fsummary>
       <desc>
         <p>Returns an empty binding structure.</p>
diff --git a/lib/stdlib/doc/src/erl_expand_records.xml b/lib/stdlib/doc/src/erl_expand_records.xml
index b6aa75ed03..20e5f1960b 100644
--- a/lib/stdlib/doc/src/erl_expand_records.xml
+++ b/lib/stdlib/doc/src/erl_expand_records.xml
@@ -34,7 +34,7 @@
     <rev>PA1</rev>
     <file>erl_expand_records.xml</file>
   </header>
-  <module>erl_expand_records</module>
+  <module since="">erl_expand_records</module>
   <modulesummary>Expands records in a module.</modulesummary>
   <description>
     <p>This module expands records in a module.</p>
@@ -42,7 +42,7 @@
 
   <funcs>
     <func>
-      <name name="module" arity="2"/>
+      <name name="module" arity="2" since=""/>
       <fsummary>Expand all records in a module.</fsummary>
       <desc>
         <p>Expands all records in a module to use explicit tuple
diff --git a/lib/stdlib/doc/src/erl_id_trans.xml b/lib/stdlib/doc/src/erl_id_trans.xml
index 16952a9582..ec66842ac0 100644
--- a/lib/stdlib/doc/src/erl_id_trans.xml
+++ b/lib/stdlib/doc/src/erl_id_trans.xml
@@ -34,7 +34,7 @@
     <rev>B</rev>
     <file>erl_id_trans.xml</file>
   </header>
-  <module>erl_id_trans</module>
+  <module since="">erl_id_trans</module>
   <modulesummary>An identity parse transform.</modulesummary>
   <description>
     <p>This module performs an identity parse transformation of Erlang code.
@@ -46,7 +46,7 @@
 
   <funcs>
     <func>
-      <name>parse_transform(Forms, Options) -> Forms</name>
+      <name since="">parse_transform(Forms, Options) -> Forms</name>
       <fsummary>Transform Erlang forms.</fsummary>
       <type>
         <v>Forms = [<seealso marker="erl_parse#type-abstract_form">erl_parse:abstract_form()</seealso>
diff --git a/lib/stdlib/doc/src/erl_internal.xml b/lib/stdlib/doc/src/erl_internal.xml
index 17cd0fb240..77551ffed7 100644
--- a/lib/stdlib/doc/src/erl_internal.xml
+++ b/lib/stdlib/doc/src/erl_internal.xml
@@ -34,7 +34,7 @@
     <rev>B</rev>
     <file>erl_internal.xml</file>
   </header>
-  <module>erl_internal</module>
+  <module since="">erl_internal</module>
   <modulesummary>Internal Erlang definitions.</modulesummary>
   <description>
     <p>This module defines Erlang BIFs, guard tests, and operators.
@@ -44,7 +44,7 @@
 
   <funcs>
     <func>
-      <name name="add_predefined_functions" arity="1"/>
+      <name name="add_predefined_functions" arity="1" since="OTP 20.0"/>
       <fsummary>Add code for pre-defined functions.</fsummary>
       <desc>
         <p>Adds to <c><anno>Forms</anno></c> the code for the standard
@@ -54,7 +54,7 @@
     </func>
 
     <func>
-      <name name="arith_op" arity="2"/>
+      <name name="arith_op" arity="2" since=""/>
       <fsummary>Test for an arithmetic operator.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>OpName</anno>/<anno>Arity</anno></c>
@@ -63,7 +63,7 @@
     </func>
 
     <func>
-      <name name="bif" arity="2"/>
+      <name name="bif" arity="2" since=""/>
       <fsummary>Test for an Erlang BIF.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>Name</anno>/<anno>Arity</anno></c>
@@ -73,7 +73,7 @@
     </func>
 
     <func>
-      <name name="bool_op" arity="2"/>
+      <name name="bool_op" arity="2" since=""/>
       <fsummary>Test for a Boolean operator.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>OpName</anno>/<anno>Arity</anno></c>
@@ -82,7 +82,7 @@
     </func>
 
     <func>
-      <name name="comp_op" arity="2"/>
+      <name name="comp_op" arity="2" since=""/>
       <fsummary>Test for a comparison operator.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>OpName</anno>/<anno>Arity</anno></c>
@@ -91,7 +91,7 @@
     </func>
 
     <func>
-      <name name="guard_bif" arity="2"/>
+      <name name="guard_bif" arity="2" since=""/>
       <fsummary>Test for an Erlang BIF allowed in guards.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>Name</anno>/<anno>Arity</anno></c> is
@@ -100,7 +100,7 @@
     </func>
 
     <func>
-      <name name="list_op" arity="2"/>
+      <name name="list_op" arity="2" since=""/>
       <fsummary>Test for a list operator.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>OpName</anno>/<anno>Arity</anno></c>
@@ -109,7 +109,7 @@
     </func>
 
     <func>
-      <name name="op_type" arity="2"/>
+      <name name="op_type" arity="2" since=""/>
       <fsummary>Return operator type.</fsummary>
       <desc>
         <p>Returns the <c><anno>Type</anno></c> of operator that
@@ -120,7 +120,7 @@
     </func>
 
     <func>
-      <name name="send_op" arity="2"/>
+      <name name="send_op" arity="2" since=""/>
       <fsummary>Test for a send operator.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>OpName</anno>/<anno>Arity</anno></c>
@@ -129,7 +129,7 @@
     </func>
 
     <func>
-      <name name="type_test" arity="2"/>
+      <name name="type_test" arity="2" since=""/>
       <fsummary>Test for a valid type test.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>Name</anno>/<anno>Arity</anno></c> is
diff --git a/lib/stdlib/doc/src/erl_lint.xml b/lib/stdlib/doc/src/erl_lint.xml
index 77cb7a9916..12eaafc3a8 100644
--- a/lib/stdlib/doc/src/erl_lint.xml
+++ b/lib/stdlib/doc/src/erl_lint.xml
@@ -32,7 +32,7 @@
     <rev>B</rev>
     <file>erl_lint.xml</file>
   </header>
-  <module>erl_lint</module>
+  <module since="">erl_lint</module>
   <modulesummary>The Erlang code linter.</modulesummary>
   <description>
     <p>This module is used to check Erlang code for illegal syntax and
@@ -78,7 +78,7 @@
 
   <funcs>
     <func>
-      <name name="format_error" arity="1"/>
+      <name name="format_error" arity="1" since=""/>
       <fsummary>Format an error descriptor.</fsummary>
       <desc>
         <p>Takes an <c><anno>ErrorDescriptor</anno></c> and returns a string
@@ -90,7 +90,7 @@
     </func>
 
     <func>
-      <name name="is_guard_test" arity="1"/>
+      <name name="is_guard_test" arity="1" since=""/>
       <fsummary>Test for a guard test.</fsummary>
       <desc>
         <p>Tests if <c><anno>Expr</anno></c> is a legal guard test.
@@ -102,9 +102,9 @@
     </func>
 
     <func>
-      <name name="module" arity="1"/>
-      <name name="module" arity="2"/>
-      <name name="module" arity="3"/>
+      <name name="module" arity="1" since=""/>
+      <name name="module" arity="2" since=""/>
+      <name name="module" arity="3" since=""/>
       <fsummary>Check a module for errors.</fsummary>
       <desc>
         <p>Checks all the forms in a module for errors. It returns:</p>
diff --git a/lib/stdlib/doc/src/erl_parse.xml b/lib/stdlib/doc/src/erl_parse.xml
index 647f36883c..8142e5c0aa 100644
--- a/lib/stdlib/doc/src/erl_parse.xml
+++ b/lib/stdlib/doc/src/erl_parse.xml
@@ -32,7 +32,7 @@
     <rev>B</rev>
     <file>erl_parse.xml</file>
   </header>
-  <module>erl_parse</module>
+  <module since="">erl_parse</module>
   <modulesummary>The Erlang parser.</modulesummary>
   <description>
     <p>This module is the basic Erlang parser that converts tokens into
@@ -89,7 +89,7 @@
 
   <funcs>
     <func>
-      <name name="abstract" arity="1"/>
+      <name name="abstract" arity="1" since=""/>
       <fsummary>Convert an Erlang term into an abstract form.</fsummary>
       <desc>
         <p>Converts the Erlang data structure <c><anno>Data</anno></c> into an
@@ -102,7 +102,7 @@
     </func>
 
     <func>
-      <name name="abstract" arity="2"/>
+      <name name="abstract" arity="2" since="OTP R16B01"/>
       <fsummary>Convert an Erlang term into an abstract form.</fsummary>
       <type name="encoding_func"/>
       <desc>
@@ -124,7 +124,7 @@
     </func>
 
     <func>
-      <name name="anno_from_term" arity="1"/>
+      <name name="anno_from_term" arity="1" since="OTP 18.0"/>
       <fsummary>Return annotations as terms.</fsummary>
       <desc>
         <p>Assumes that <c><anno>Term</anno></c> is a term with the same
@@ -140,7 +140,7 @@
     </func>
 
     <func>
-      <name name="anno_to_term" arity="1"/>
+      <name name="anno_to_term" arity="1" since="OTP 18.0"/>
       <fsummary>Return the representation of annotations.</fsummary>
       <desc>
         <p>Returns a term where each collection of annotations
@@ -154,7 +154,7 @@
     </func>
 
     <func>
-      <name name="fold_anno" arity="3"/>
+      <name name="fold_anno" arity="3" since="OTP 18.0"/>
       <fsummary>Fold a function over the annotations of an <c>erl_parse</c> tree.
       </fsummary>
       <desc>
@@ -171,7 +171,7 @@
     </func>
 
     <func>
-      <name>format_error(ErrorDescriptor) -> Chars</name>
+      <name since="">format_error(ErrorDescriptor) -> Chars</name>
       <fsummary>Format an error descriptor.</fsummary>
       <type>
         <v>ErrorDescriptor = <seealso
@@ -188,7 +188,7 @@
     </func>
 
     <func>
-      <name name="map_anno" arity="2"/>
+      <name name="map_anno" arity="2" since="OTP 18.0"/>
       <fsummary>Map a function over the annotations of an <c>erl_parse</c> tree.
       </fsummary>
       <desc>
@@ -201,7 +201,7 @@
     </func>
 
     <func>
-      <name name="mapfold_anno" arity="3"/>
+      <name name="mapfold_anno" arity="3" since="OTP 18.0"/>
       <fsummary>Map and fold a function over the annotations of an
         <c>erl_parse</c> tree.</fsummary>
       <desc>
@@ -220,7 +220,7 @@
     </func>
 
     <func>
-      <name name="new_anno" arity="1"/>
+      <name name="new_anno" arity="1" since="OTP 18.0"/>
       <fsummary>Create new annotations.</fsummary>
       <desc>
         <p>Assumes that <c><anno>Term</anno></c> is a term with the same
@@ -236,7 +236,7 @@
     </func>
 
     <func>
-      <name name="normalise" arity="1"/>
+      <name name="normalise" arity="1" since=""/>
       <fsummary>Convert abstract form to an Erlang term.</fsummary>
       <desc>
         <p>Converts the abstract form <c><anno>AbsTerm</anno></c> of a
@@ -247,7 +247,7 @@
     </func>
 
     <func>
-      <name name="parse_exprs" arity="1"/>
+      <name name="parse_exprs" arity="1" since=""/>
       <fsummary>Parse Erlang expressions.</fsummary>
       <desc>
         <p>Parses <c><anno>Tokens</anno></c> as if it was a list of expressions.
@@ -267,7 +267,7 @@
     </func>
 
     <func>
-      <name name="parse_form" arity="1"/>
+      <name name="parse_form" arity="1" since=""/>
       <fsummary>Parse an Erlang form.</fsummary>
       <desc>
         <p>Parses <c><anno>Tokens</anno></c> as if it was a form. Returns one
@@ -287,7 +287,7 @@
     </func>
 
     <func>
-      <name name="parse_term" arity="1"/>
+      <name name="parse_term" arity="1" since=""/>
       <fsummary>Parse an Erlang term.</fsummary>
       <desc>
         <p>Parses <c><anno>Tokens</anno></c> as if it was a term. Returns
@@ -307,8 +307,8 @@
     </func>
 
     <func>
-      <name name="tokens" arity="1"/>
-      <name name="tokens" arity="2"/>
+      <name name="tokens" arity="1" since=""/>
+      <name name="tokens" arity="2" since=""/>
       <fsummary>Generate a list of tokens for an expression.</fsummary>
       <desc>
         <p>Generates a list of tokens representing the abstract
diff --git a/lib/stdlib/doc/src/erl_pp.xml b/lib/stdlib/doc/src/erl_pp.xml
index 77a7f1e8d1..f1c3aa5a41 100644
--- a/lib/stdlib/doc/src/erl_pp.xml
+++ b/lib/stdlib/doc/src/erl_pp.xml
@@ -34,7 +34,7 @@
     <rev>B</rev>
     <file>erl_pp.xml</file>
   </header>
-  <module>erl_pp</module>
+  <module since="">erl_pp</module>
   <modulesummary>The Erlang pretty printer.</modulesummary>
   <description>
     <p>The functions in this module are used to generate
@@ -73,8 +73,8 @@
 
   <funcs>
     <func>
-      <name name="attribute" arity="1"/>
-      <name name="attribute" arity="2"/>
+      <name name="attribute" arity="1" since=""/>
+      <name name="attribute" arity="2" since=""/>
       <fsummary>Pretty print an attribute.</fsummary>
       <desc>
         <p>Same as <seealso marker="#form/1"><c>form/1,2</c></seealso>,
@@ -83,10 +83,10 @@
     </func>
 
     <func>
-      <name name="expr" arity="1"/>
-      <name name="expr" arity="2"/>
-      <name name="expr" arity="3"/>
-      <name name="expr" arity="4"/>
+      <name name="expr" arity="1" since=""/>
+      <name name="expr" arity="2" since=""/>
+      <name name="expr" arity="3" since=""/>
+      <name name="expr" arity="4" since=""/>
       <fsummary>Pretty print one <c>Expression</c>.</fsummary>
       <desc>
         <p>Prints one expression. It is useful for implementing hooks (see
@@ -96,9 +96,9 @@
     </func>
 
     <func>
-      <name name="exprs" arity="1"/>
-      <name name="exprs" arity="2"/>
-      <name name="exprs" arity="3"/>
+      <name name="exprs" arity="1" since=""/>
+      <name name="exprs" arity="2" since=""/>
+      <name name="exprs" arity="3" since=""/>
       <fsummary>Pretty print <c>Expressions</c>.</fsummary>
       <desc>
         <p>Same as <seealso marker="#form/1"><c>form/1,2</c></seealso>,
@@ -108,8 +108,8 @@
     </func>
 
     <func>
-      <name name="form" arity="1"/>
-      <name name="form" arity="2"/>
+      <name name="form" arity="1" since=""/>
+      <name name="form" arity="2" since=""/>
       <fsummary>Pretty print a form.</fsummary>
       <desc>
         <p>Pretty prints a
@@ -120,8 +120,8 @@
     </func>
 
     <func>
-      <name name="function" arity="1"/>
-      <name name="function" arity="2"/>
+      <name name="function" arity="1" since=""/>
+      <name name="function" arity="2" since=""/>
       <fsummary>Pretty print a function.</fsummary>
       <desc>
         <p>Same as <seealso marker="#form/1"><c>form/1,2</c></seealso>,
@@ -130,8 +130,8 @@
     </func>
 
     <func>
-      <name name="guard" arity="1"/>
-      <name name="guard" arity="2"/>
+      <name name="guard" arity="1" since=""/>
+      <name name="guard" arity="2" since=""/>
       <fsummary>Pretty print a guard.</fsummary>
       <desc>
         <p>Same as <seealso marker="#form/1"><c>form/1,2</c></seealso>,
diff --git a/lib/stdlib/doc/src/erl_scan.xml b/lib/stdlib/doc/src/erl_scan.xml
index 137ccd3416..38111f73bc 100644
--- a/lib/stdlib/doc/src/erl_scan.xml
+++ b/lib/stdlib/doc/src/erl_scan.xml
@@ -32,7 +32,7 @@
     <rev>B</rev>
     <file>erl_scan.xml</file>
   </header>
-  <module>erl_scan</module>
+  <module since="">erl_scan</module>
   <modulesummary>The Erlang token scanner.</modulesummary>
   <description>
     <p>This module contains functions for tokenizing (scanning) characters into
@@ -74,7 +74,7 @@
  
   <funcs>
     <func>
-      <name name="category" arity="1"/>
+      <name name="category" arity="1" since="OTP 18.0"/>
       <fsummary>Return the category.</fsummary>
       <desc>
         <p>Returns the category of <c><anno>Token</anno></c>.</p>
@@ -82,7 +82,7 @@
     </func>
 
     <func>
-      <name name="column" arity="1"/>
+      <name name="column" arity="1" since="OTP 18.0"/>
       <fsummary>Return the column.</fsummary>
       <desc>
         <p>Returns the column of <c><anno>Token</anno></c>'s
@@ -91,7 +91,7 @@
     </func>
 
     <func>
-      <name name="end_location" arity="1"/>
+      <name name="end_location" arity="1" since="OTP 18.0"/>
       <fsummary>Return the end location of the text.</fsummary>
       <desc>
         <p>Returns the end location of the text of
@@ -101,7 +101,7 @@
     </func>
 
     <func>
-      <name name="format_error" arity="1"/>
+      <name name="format_error" arity="1" since=""/>
       <fsummary>Format an error descriptor.</fsummary>
       <desc>
         <p>Uses an <c><anno>ErrorDescriptor</anno></c> and returns a string 
@@ -113,7 +113,7 @@
     </func>
 
     <func>
-      <name name="line" arity="1"/>
+      <name name="line" arity="1" since="OTP 18.0"/>
       <fsummary>Return the line.</fsummary>
       <desc>
         <p>Returns the line of <c><anno>Token</anno></c>'s collection
@@ -122,7 +122,7 @@
     </func>
 
     <func>
-      <name name="location" arity="1"/>
+      <name name="location" arity="1" since="OTP 18.0"/>
       <fsummary>Return the location.</fsummary>
       <desc>
         <p>Returns the location of <c><anno>Token</anno></c>'s
@@ -131,7 +131,7 @@
     </func>
 
     <func>
-      <name name="reserved_word" arity="1"/>
+      <name name="reserved_word" arity="1" since=""/>
       <fsummary>Test for a reserved word.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>Atom</anno></c> is an
@@ -140,9 +140,9 @@
     </func>
 
     <func>
-      <name name="string" arity="1"/>
-      <name name="string" arity="2"/>
-      <name name="string" arity="3"/>
+      <name name="string" arity="1" since=""/>
+      <name name="string" arity="2" since=""/>
+      <name name="string" arity="3" since=""/>
       <fsummary>Scan a string and return the Erlang tokens.</fsummary>
       <desc>
         <p>Takes the list of characters <c><anno>String</anno></c> and tries to
@@ -229,7 +229,7 @@
     </func>
 
     <func>
-      <name name="symbol" arity="1"/>
+      <name name="symbol" arity="1" since="OTP 18.0"/>
       <fsummary>Return the symbol.</fsummary>
       <desc>
         <p>Returns the symbol of <c><anno>Token</anno></c>.</p>
@@ -237,7 +237,7 @@
     </func>
 
     <func>
-      <name name="text" arity="1"/>
+      <name name="text" arity="1" since="OTP 18.0"/>
       <fsummary>Return the text.</fsummary>
       <desc>
         <p>Returns the text of <c><anno>Token</anno></c>'s collection
@@ -247,8 +247,8 @@
     </func>
 
     <func>
-      <name name="tokens" arity="3"/>
-      <name name="tokens" arity="4"/>
+      <name name="tokens" arity="3" since=""/>
+      <name name="tokens" arity="4" since=""/>
       <fsummary>Re-entrant scanner.</fsummary>
       <type name="char_spec"/>
       <type name="return_cont"/>
diff --git a/lib/stdlib/doc/src/erl_tar.xml b/lib/stdlib/doc/src/erl_tar.xml
index 68fa071090..ea8173748a 100644
--- a/lib/stdlib/doc/src/erl_tar.xml
+++ b/lib/stdlib/doc/src/erl_tar.xml
@@ -32,7 +32,7 @@
     <rev>A</rev>
     <file>erl_tar.xml</file>
   </header>
-  <module>erl_tar</module>
+  <module since="">erl_tar</module>
   <modulesummary>Unix 'tar' utility for reading and writing tar archives.
   </modulesummary>
   <description>
@@ -127,7 +127,7 @@
 
   <funcs>
     <func>
-      <name>add(TarDescriptor, Filename, Options) -> RetValue</name>
+      <name since="">add(TarDescriptor, Filename, Options) -> RetValue</name>
       <fsummary>Add a file to an open tar file.</fsummary>
       <type>
         <v>TarDescriptor = term()</v>
@@ -211,7 +211,7 @@
     </func>
 
     <func>
-      <name>add(TarDescriptor, FilenameOrBin, NameInArchive, Options) ->
+      <name since="">add(TarDescriptor, FilenameOrBin, NameInArchive, Options) ->
         RetValue </name>
       <fsummary>Add a file to an open tar file.</fsummary>
       <type>
@@ -233,7 +233,7 @@
     </func>
 
     <func>
-      <name>close(TarDescriptor)</name>
+      <name since="">close(TarDescriptor)</name>
       <fsummary>Close an open tar file.</fsummary>
       <type>
         <v>TarDescriptor = term()</v>
@@ -245,7 +245,7 @@
     </func>
 
     <func>
-      <name>create(Name, FileList) ->RetValue </name>
+      <name since="">create(Name, FileList) ->RetValue </name>
       <fsummary>Create a tar archive.</fsummary>
       <type>
         <v>Name = filename()</v>
@@ -264,7 +264,7 @@
     </func>
 
     <func>
-      <name>create(Name, FileList, OptionList)</name>
+      <name since="">create(Name, FileList, OptionList)</name>
       <fsummary>Create a tar archive with options.</fsummary>
       <type>
         <v>Name = filename()</v>
@@ -315,7 +315,7 @@
     </func>
 
     <func>
-      <name>extract(Name) -> RetValue</name>
+      <name since="">extract(Name) -> RetValue</name>
       <fsummary>Extract all files from a tar file.</fsummary>
       <type>
         <v>Name = filename() | {binary,binary()} | {file,Fd}</v>
@@ -339,7 +339,7 @@
     </func>
 
     <func>
-      <name>extract(Name, OptionList)</name>
+      <name since="">extract(Name, OptionList)</name>
       <fsummary>Extract files from a tar file.</fsummary>
       <type>
         <v>Name = filename() | {binary,binary()} | {file,Fd}</v>
@@ -411,7 +411,7 @@
     </func>
 
     <func>
-      <name>format_error(Reason) -> string()</name>
+      <name since="">format_error(Reason) -> string()</name>
       <fsummary>Convert error term to a readable string.</fsummary>
       <type>
         <v>Reason = term()</v>
@@ -423,7 +423,7 @@
     </func>
 
     <func>
-      <name>init(UserPrivate, AccessMode, Fun) ->
+      <name since="OTP 17.4">init(UserPrivate, AccessMode, Fun) ->
         {ok,TarDescriptor} | {error,Reason}</name>
       <fsummary>Create a <c>TarDescriptor</c> used in subsequent tar operations
         when defining own low-level storage access functions.</fsummary>
@@ -518,7 +518,7 @@ erl_tar:close(TarDesc)</code>
     </func>
 
     <func>
-      <name>open(Name, OpenModeList) -> RetValue</name>
+      <name since="">open(Name, OpenModeList) -> RetValue</name>
       <fsummary>Open a tar file for writing.</fsummary>
       <type>
         <v>Name = filename()</v>
@@ -565,7 +565,7 @@ erl_tar:close(TarDesc)</code>
     </func>
 
     <func>
-      <name>table(Name) -> RetValue</name>
+      <name since="">table(Name) -> RetValue</name>
       <fsummary>Retrieve the name of all files in a tar file.</fsummary>
       <type>
         <v>Name = filename()|{binary,binary()}|{file,file_descriptor()}</v>
@@ -578,7 +578,7 @@ erl_tar:close(TarDesc)</code>
     </func>
 
     <func>
-      <name>table(Name, Options)</name>
+      <name since="">table(Name, Options)</name>
       <fsummary>Retrieve name and information of all files in a tar file.
       </fsummary>
       <type>
@@ -590,7 +590,7 @@ erl_tar:close(TarDesc)</code>
     </func>
 
     <func>
-      <name>t(Name)</name>
+      <name since="">t(Name)</name>
       <fsummary>Print the name of each file in a tar file.</fsummary>
       <type>
         <v>Name = filename()|{binary,binary()}|{file,file_descriptor()}</v>
@@ -602,7 +602,7 @@ erl_tar:close(TarDesc)</code>
     </func>
 
     <func>
-      <name>tt(Name)</name>
+      <name since="">tt(Name)</name>
       <fsummary>Print name and information for each file in a tar file.
       </fsummary>
       <type>
diff --git a/lib/stdlib/doc/src/ets.xml b/lib/stdlib/doc/src/ets.xml
index ad006f9a2b..2cb677785d 100644
--- a/lib/stdlib/doc/src/ets.xml
+++ b/lib/stdlib/doc/src/ets.xml
@@ -28,7 +28,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>ets</module>
+  <module since="">ets</module>
   <modulesummary>Built-in term storage.</modulesummary>
   <description>
     <p>This module is an interface to the Erlang built-in term storage
@@ -138,23 +138,96 @@
        operation. In database terms the isolation level can be seen as
        "serializable", as if all isolated operations are carried out serially,
        one after the other in a strict order.</p>
+  </section>
 
-      <p>No other support is available within this module that would guarantee
-       consistency between objects. However, function
-       <seealso marker="#safe_fixtable/2"><c>safe_fixtable/2</c></seealso>
-       can be used to guarantee that a sequence of
-       <seealso marker="#first/1"><c>first/1</c></seealso> and
-       <seealso marker="#next/2"><c>next/2</c></seealso> calls traverse the
-       table without errors and that each existing object in the table is
-       visited exactly once, even if another (or the same) process
-       simultaneously deletes or inserts objects into the table.
-       Nothing else is guaranteed; in particular objects that are inserted
-       or deleted during such a traversal can be visited once or not at all.
-       Functions that internally traverse over a table, like
-       <seealso marker="#select/1"><c>select</c></seealso> and
-       <seealso marker="#match/1"><c>match</c></seealso>,
-       give the same guarantee as
-       <seealso marker="#safe_fixtable/2"><c>safe_fixtable</c></seealso>.</p>
+  <section><marker id="traversal"></marker>
+    <title>Table traversal</title>
+    <p>There are different ways to traverse through the objects of a table.</p>
+    <list type="bulleted">
+      <item><p><em>Single-step</em> traversal one key at at time, using
+	<seealso marker="#first/1"><c>first/1</c></seealso>,
+	<seealso marker="#next/2"><c>next/2</c></seealso>,
+	<seealso marker="#last/1"><c>last/1</c></seealso> and
+	<seealso marker="#prev/2"><c>prev/2</c></seealso>.</p>
+      </item>
+      <item><p>Search with simple <em>match patterns</em>, using
+	<seealso marker="#match/1"><c>match/1/2/3</c></seealso>,
+	<seealso marker="#match_delete/2"><c>match_delete/2</c></seealso> and
+	<seealso marker="#match_object/1"><c>match_object/1/2/3</c></seealso>.</p>
+      </item>
+      <item><p>Search with more powerful <em>match specifications</em>, using
+	<seealso marker="#select/1"><c>select/1/2/3</c></seealso>,
+	<seealso marker="#select_count/2"><c>select_count/2</c></seealso>,
+	<seealso marker="#select_delete/2"><c>select_delete/2</c></seealso>,
+	<seealso marker="#select_replace/2"><c>select_replace/2</c></seealso> and
+	<seealso marker="#select_reverse/1"><c>select_reverse/1/2/3</c></seealso>.</p>
+      </item>
+      <item><p><em>Table conversions</em>, using
+	<seealso marker="#tab2file/2"><c>tab2file/2/3</c></seealso> and
+        <seealso marker="#tab2list/1"><c>tab2list/1</c></seealso>.</p>
+      </item>
+    </list>
+    <p>None of these ways of table traversal will guarantee a consistent table snapshot
+    if the table is also updated during the traversal. Moreover, traversals not
+    done in a <em>safe</em> way, on tables where keys are inserted or deleted
+    during the traversal, may yield the following undesired effects:</p>
+    <list type="bulleted">
+      <item><p>Any key may be missed.</p></item>
+      <item><p>Any key may be found more than once.</p></item>
+      <item><p>The traversal may fail with <c>badarg</c> exception if keys are deleted.</p>
+      </item>
+    </list>
+    <p>A table traversal is <em>safe</em> if either</p>
+    <list type="bulleted">
+      <item><p>the table is of type <c>ordered_set</c>.</p>
+      </item>
+      <item><p>the entire table traversal is done within one ETS function
+        call.</p>
+      </item>
+      <item><p>function <seealso marker="#safe_fixtable/2"><c>safe_fixtable/2</c></seealso>
+        is used to keep the table fixated during the entire traversal.</p>
+      </item>
+    </list>
+    <note>
+      <p>Even though the access of a single object is always guaranteed to be
+      <seealso marker="#concurrency">atomic and isolated</seealso>, each traversal
+      through a table to find the next key is not done with such guarantees. This is often
+      not a problem, but may cause rare subtle "unexpected" effects if a concurrent
+      process inserts objects during a traversal. For example, consider one
+      process doing</p>
+<pre>
+ets:new(t, [ordered_set, named_table]),
+ets:insert(t, {1}),
+ets:insert(t, {2}),
+ets:insert(t, {3}),
+</pre>
+      <p>A concurrent call to <c>ets:first(t)</c>, done by another
+      process, may then in rare cases return <c>2</c> even though
+      <c>2</c> has never existed in the table ordered as the first key. In
+      the same way, a concurrent call to <c>ets:next(t, 1)</c> may return
+      <c>3</c> even though <c>3</c> never existed in the table
+      ordered directly after <c>1</c>.</p>
+      <p>Effects like this are improbable but possible. The probability will
+      further be reduced (if not vanish) if table option
+      <seealso marker="#new_2_write_concurrency"><c>write_concurrency</c></seealso>
+      is not enabled. This can also only be a potential concern for
+      <c>ordered_set</c> where the traversal order is defined.</p>
+    </note>
+    <p>Traversals using <c>match</c> and <c>select</c> functions may not need to
+    scan the entire table depending on how the key is specified. A match
+    pattern with a <em>fully bound key</em> (without any match variables) will
+    optimize the operation to a single key lookup without any table traversal
+    at all. For <c>ordered_set</c> a <em>partially bound key</em> will limit the
+    traversal to only scan a subset of the table based on term order. A
+    partially bound key is either a list or a tuple with a prefix that is fully
+    bound. Example:</p>
+<pre>
+1> <input>T = ets:new(t,[ordered_set]), ets:insert(T, {"555-1234", "John Smith"}).</input>
+true
+2> <input>%% Efficient search of all with area code 555</input>
+2> <input>ets:match(T,{[$5,$5,$5,$- |'$1'],'$2'}).</input>
+[["1234","John Smith"]]
+</pre>
   </section>
 
   <section>
@@ -207,7 +280,7 @@
 
   <funcs>
     <func>
-      <name name="all" arity="0"/>
+      <name name="all" arity="0" since=""/>
       <fsummary>Return a list of all ETS tables.</fsummary>
       <desc>
         <p>Returns a list of all tables at the node. Named tables are
@@ -222,7 +295,7 @@
     </func>
 
     <func>
-      <name name="delete" arity="1"/>
+      <name name="delete" arity="1" since=""/>
       <fsummary>Delete an entire ETS table.</fsummary>
       <desc>
         <p>Deletes the entire table <c><anno>Tab</anno></c>.</p>
@@ -230,7 +303,7 @@
     </func>
 
     <func>
-      <name name="delete" arity="2"/>
+      <name name="delete" arity="2" since=""/>
       <fsummary>Delete all objects with a specified key from an ETS
         table.</fsummary>
       <desc>
@@ -240,7 +313,7 @@
     </func>
 
     <func>
-      <name name="delete_all_objects" arity="1"/>
+      <name name="delete_all_objects" arity="1" since=""/>
       <fsummary>Delete all objects in an ETS table.</fsummary>
       <desc>
         <p>Delete all objects in the ETS table <c><anno>Tab</anno></c>.
@@ -250,7 +323,7 @@
     </func>
 
     <func>
-      <name name="delete_object" arity="2"/>
+      <name name="delete_object" arity="2" since=""/>
       <fsummary>Deletes a specific from an ETS table.</fsummary>
       <desc>
         <p>Delete the exact object <c><anno>Object</anno></c> from the
@@ -262,7 +335,7 @@
     </func>
 
     <func>
-      <name name="file2tab" arity="1"/>
+      <name name="file2tab" arity="1" since=""/>
       <fsummary>Read an ETS table from a file.</fsummary>
       <desc>
         <p>Reads a file produced by <seealso marker="#tab2file/2">
@@ -274,7 +347,7 @@
     </func>
 
     <func>
-      <name name="file2tab" arity="2"/>
+      <name name="file2tab" arity="2" since=""/>
       <fsummary>Read an ETS table from a file.</fsummary>
       <desc>
         <p>Reads a file produced by <seealso marker="#tab2file/2">
@@ -306,7 +379,7 @@
     </func>
 
     <func>
-      <name name="first" arity="1"/>
+      <name name="first" arity="1" since=""/>
       <fsummary>Return the first key in an ETS table.</fsummary>
       <desc>
         <p>Returns the first key <c><anno>Key</anno></c> in table
@@ -321,7 +394,7 @@
     </func>
 
     <func>
-      <name name="foldl" arity="3"/>
+      <name name="foldl" arity="3" since=""/>
       <fsummary>Fold a function over an ETS table.</fsummary>
       <desc>
         <p><c><anno>Acc0</anno></c> is returned if the table is empty.
@@ -337,7 +410,7 @@
     </func>
 
     <func>
-      <name name="foldr" arity="3"/>
+      <name name="foldr" arity="3" since=""/>
       <fsummary>Fold a function over an ETS table.</fsummary>
       <desc>
         <p><c><anno>Acc0</anno></c> is returned if the table is empty.
@@ -353,7 +426,7 @@
     </func>
 
     <func>
-      <name name="from_dets" arity="2"/>
+      <name name="from_dets" arity="2" since=""/>
       <fsummary>Fill an ETS table with objects from a Dets
         table.</fsummary>
       <desc>
@@ -367,7 +440,7 @@
     </func>
 
     <func>
-      <name name="fun2ms" arity="1"/>
+      <name name="fun2ms" arity="1" since=""/>
       <fsummary>Pseudo function that transforms fun syntax to a match
         specification.</fsummary>
       <desc>
@@ -436,7 +509,7 @@ Error: fun containing local Erlang function calls
     </func>
 
     <func>
-      <name name="give_away" arity="3"/>
+      <name name="give_away" arity="3" since=""/>
       <fsummary>Change owner of a table.</fsummary>
       <desc>
         <p>Make process <c><anno>Pid</anno></c> the new owner of table
@@ -454,7 +527,7 @@ Error: fun containing local Erlang function calls
     </func>
 
     <func>
-      <name name="i" arity="0"/>
+      <name name="i" arity="0" since=""/>
       <fsummary>Display information about all ETS tables on a terminal.
       </fsummary>
       <desc>
@@ -463,7 +536,7 @@ Error: fun containing local Erlang function calls
     </func>
 
     <func>
-      <name name="i" arity="1"/>
+      <name name="i" arity="1" since=""/>
       <fsummary>Browse an ETS table on a terminal.</fsummary>
       <desc>
         <p>Browses table <c><anno>Tab</anno></c> on a terminal.</p>
@@ -471,7 +544,7 @@ Error: fun containing local Erlang function calls
     </func>
 
     <func>
-      <name name="info" arity="1"/>
+      <name name="info" arity="1" since=""/>
       <fsummary>Return information about an <c>table</c>.</fsummary>
       <desc>
         <p>Returns information about table <c><anno>Tab</anno></c> as a list of
@@ -547,7 +620,7 @@ Error: fun containing local Erlang function calls
     </func>
 
     <func>
-      <name name="info" arity="2"/>
+      <name name="info" arity="2" since=""/>
       <fsummary>Return the information associated with the specified item for
         an ETS table.</fsummary>
       <desc>
@@ -569,12 +642,11 @@ Error: fun containing local Erlang function calls
             <p><marker id="info_2_safe_fixed_monotonic_time"/></p>
             <p><c>Item=safe_fixed|safe_fixed_monotonic_time,
               Value={FixationTime,Info}|false</c></p>
-            <p>If the table has been fixed using
+            <p>If the table is fixed using
               <seealso marker="#safe_fixtable/2">
               <c>safe_fixtable/2</c></seealso>,
               the call returns a tuple where <c>FixationTime</c> is the
-              time when the table was first fixed by a process, which either
-              is or is not one of the processes it is fixed by now.</p>
+              last time when the table changed from unfixed to fixed.</p>
             <p>The format and value of <c>FixationTime</c> depends on
               <c>Item</c>:</p>
             <taglist>
@@ -606,20 +678,26 @@ Error: fun containing local Erlang function calls
               table is fixed by now. <c>RefCount</c> is the value
               of the reference counter and it keeps track of how many times
               the table has been fixed by the process.</p>
-            <p>If the table never has been fixed, the call returns
-              <c>false</c>.</p>
+	    <p>Table fixations are not limited to <seealso marker="#safe_fixtable/2">
+	      <c>safe_fixtable/2</c></seealso>. Temporary fixations may also
+	      be done by for example <seealso marker="#traversal">traversing
+	      functions</seealso> like <c>select</c> and <c>match</c>. Such
+	      table fixations are automatically released before the
+	      corresponding functions returns, but they may be seen by a
+	      concurrent call to
+	      <c>ets:info(T,safe_fixed|safe_fixed_monotonic_time)</c>.</p>
+            <p>If the table is not fixed at all, the call returns <c>false</c>.</p>
           </item>
           <item>
             <p><c>Item=stats, Value=tuple()</c></p>
-            <p>Returns internal statistics about <c>set</c>, <c>bag</c>, and
-              <c>duplicate_bag</c> tables on an internal format used by OTP
-              test suites. Not for production use.</p></item>
+            <p>Returns internal statistics about tables on an internal format
+	    used by OTP test suites. Not for production use.</p></item>
         </list>
       </desc>
     </func>
 
     <func>
-      <name name="init_table" arity="2"/>
+      <name name="init_table" arity="2" since=""/>
       <fsummary>Replace all objects of an ETS table.</fsummary>
       <desc>
         <p>Replaces the existing objects of table <c><anno>Tab</anno></c> with
@@ -649,7 +727,7 @@ Error: fun containing local Erlang function calls
     </func>
 
     <func>
-      <name name="insert" arity="2"/>
+      <name name="insert" arity="2" since=""/>
       <fsummary>Insert an object into an ETS table.</fsummary>
       <desc>
         <p>Inserts the object or all of the objects in list
@@ -681,7 +759,7 @@ Error: fun containing local Erlang function calls
     </func>
 
     <func>
-      <name name="insert_new" arity="2"/>
+      <name name="insert_new" arity="2" since=""/>
       <fsummary>Insert an object into an ETS table if the key is not
         already present.</fsummary>
       <desc>
@@ -700,7 +778,7 @@ Error: fun containing local Erlang function calls
     </func>
 
     <func>
-      <name name="is_compiled_ms" arity="1"/>
+      <name name="is_compiled_ms" arity="1" since=""/>
       <fsummary>Check if an Erlang term is the result of
         <c>match_spec_compile</c>.</fsummary>
       <desc>
@@ -732,7 +810,7 @@ ets:is_compiled_ms(Broken).</code>
     </func>
 
     <func>
-      <name name="last" arity="1"/>
+      <name name="last" arity="1" since=""/>
       <fsummary>Return the last key in an ETS table of type
         <c>ordered_set</c>.</fsummary>
       <desc>
@@ -747,7 +825,7 @@ ets:is_compiled_ms(Broken).</code>
     </func>
 
     <func>
-      <name name="lookup" arity="2"/>
+      <name name="lookup" arity="2" since=""/>
       <fsummary>Return all objects with a specified key in an ETS table.
       </fsummary>
       <desc>
@@ -787,7 +865,7 @@ ets:is_compiled_ms(Broken).</code>
     </func>
 
     <func>
-      <name name="lookup_element" arity="3"/>
+      <name name="lookup_element" arity="3" since=""/>
       <fsummary>Return the <c>Pos</c>:th element of all objects with a
         specified key in an ETS table.</fsummary>
       <desc>
@@ -810,7 +888,7 @@ ets:is_compiled_ms(Broken).</code>
     </func>
 
     <func>
-      <name name="match" arity="1"/>
+      <name name="match" arity="1" since=""/>
       <fsummary>Continues matching objects in an ETS table.</fsummary>
       <desc>
         <p>Continues a match started with
@@ -824,7 +902,7 @@ ets:is_compiled_ms(Broken).</code>
     </func>
 
     <func>
-      <name name="match" arity="2"/>
+      <name name="match" arity="2" since=""/>
       <fsummary>Match the objects in an ETS table against a pattern.
       </fsummary>
       <desc>
@@ -856,7 +934,7 @@ ets:is_compiled_ms(Broken).</code>
     </func>
 
     <func>
-      <name name="match" arity="3"/>
+      <name name="match" arity="3" since=""/>
       <fsummary>Match the objects in an ETS table against a pattern
         and return part of the answers.</fsummary>
       <desc>
@@ -871,11 +949,14 @@ ets:is_compiled_ms(Broken).</code>
           <seealso marker="#first/1"><c>first/1</c></seealso> and
           <seealso marker="#next/2"><c>next/2</c></seealso>.</p>
         <p>If the table is empty, <c>'$end_of_table'</c> is returned.</p>
+	<p>Use <seealso marker="#safe_fixtable/2"><c>safe_fixtable/2</c></seealso>
+	  to guarantee <seealso marker="#traversal">safe traversal</seealso>
+	  for subsequent calls to <seealso marker="#match/1"><c>match/1</c></seealso>.</p>
       </desc>
     </func>
 
     <func>
-      <name name="match_delete" arity="2"/>
+      <name name="match_delete" arity="2" since=""/>
       <fsummary>Delete all objects that match a specified pattern from an
         ETS table.</fsummary>
       <desc>
@@ -886,7 +967,7 @@ ets:is_compiled_ms(Broken).</code>
     </func>
 
     <func>
-      <name name="match_object" arity="1"/>
+      <name name="match_object" arity="1" since=""/>
       <fsummary>Continues matching objects in an ETS table.</fsummary>
       <desc>
         <p>Continues a match started with
@@ -901,7 +982,7 @@ ets:is_compiled_ms(Broken).</code>
     </func>
 
     <func>
-      <name name="match_object" arity="2"/>
+      <name name="match_object" arity="2" since=""/>
       <fsummary>Match the objects in an ETS table against a pattern.
       </fsummary>
       <desc>
@@ -920,7 +1001,7 @@ ets:is_compiled_ms(Broken).</code>
     </func>
 
     <func>
-      <name name="match_object" arity="3"/>
+      <name name="match_object" arity="3" since=""/>
       <fsummary>Match the objects in an ETS table against a pattern and
         return part of the answers.</fsummary>
       <desc>
@@ -936,11 +1017,15 @@ ets:is_compiled_ms(Broken).</code>
           <seealso marker="#first/1"><c>first/1</c></seealso> and
           <seealso marker="#next/2"><c>next/2</c></seealso>.</p>
         <p>If the table is empty, <c>'$end_of_table'</c> is returned.</p>
+	<p>Use <seealso marker="#safe_fixtable/2"><c>safe_fixtable/2</c></seealso>
+	  to guarantee <seealso marker="#traversal">safe traversal</seealso>
+	  for subsequent calls to <seealso marker="#match_object/1">
+	  <c>match_object/1</c></seealso>.</p>
       </desc>
     </func>
 
     <func>
-      <name name="match_spec_compile" arity="1"/>
+      <name name="match_spec_compile" arity="1" since=""/>
       <fsummary>Compile a match specification into its internal representation.
       </fsummary>
       <desc>
@@ -968,7 +1053,7 @@ ets:is_compiled_ms(Broken).</code>
     </func>
 
     <func>
-      <name name="match_spec_run" arity="2"/>
+      <name name="match_spec_run" arity="2" since=""/>
       <fsummary>Perform matching, using a compiled match specification on a
         list of terms.</fsummary>
       <desc>
@@ -1005,7 +1090,7 @@ ets:select(Table, MatchSpec),</code>
     </func>
 
     <func>
-      <name name="member" arity="2"/>
+      <name name="member" arity="2" since=""/>
       <fsummary>Tests for occurrence of a key in an ETS table.</fsummary>
       <desc>
         <p>Works like <seealso marker="#lookup/2"><c>lookup/2</c></seealso>,
@@ -1016,7 +1101,7 @@ ets:select(Table, MatchSpec),</code>
     </func>
 
     <func>
-      <name name="new" arity="2"/>
+      <name name="new" arity="2" since=""/>
       <fsummary>Create a new ETS table.</fsummary>
       <desc>
         <p>Creates a new table and returns a table identifier that can
@@ -1135,11 +1220,17 @@ ets:select(Table, MatchSpec),</code>
               Functions that makes such promises over many objects (like
               <seealso marker="#insert/2"><c>insert/2</c></seealso>)
               gain less (or nothing) from this option.</p>
-            <p>Table type <c>ordered_set</c> is not affected by this option.
-              Also, the memory consumption inflicted by
-              both <c>write_concurrency</c> and <c>read_concurrency</c> is a
-              constant overhead per table. This overhead can be especially
-              large when both options are combined.</p>
+            <p>The memory consumption inflicted by both <c>write_concurrency</c>
+	      and <c>read_concurrency</c> is a constant overhead per table for
+	      <c>set</c>, <c>bag</c> and <c>duplicate_bag</c>. For
+	      <c>ordered_set</c> the memory overhead depends on the number
+	      of inserted objects and the amount of actual detected
+	      concurrency in runtime. The memory overhead can be especially
+	      large when both options are combined.</p>
+	    <note>
+              <p>Prior to stdlib-3.7 (OTP-22.0) <c>write_concurrency</c> had no
+	      effect on <c>ordered_set</c>.</p>
+            </note>
             <marker id="new_2_read_concurrency"></marker>
           </item>
           <tag><c>{read_concurrency,boolean()}</c></tag>
@@ -1180,7 +1271,7 @@ ets:select(Table, MatchSpec),</code>
     </func>
 
     <func>
-      <name name="next" arity="2"/>
+      <name name="next" arity="2" since=""/>
       <fsummary>Return the next key in an ETS table.</fsummary>
       <desc>
         <p>Returns the next key <c><anno>Key2</anno></c>, following key
@@ -1192,17 +1283,18 @@ ets:select(Table, MatchSpec),</code>
         <p>To find the first key in the table, use
           <seealso marker="#first/1"><c>first/1</c></seealso>.</p>
         <p>Unless a table of type <c>set</c>, <c>bag</c>, or
-          <c>duplicate_bag</c> is protected using
+          <c>duplicate_bag</c> is fixated using
           <seealso marker="#safe_fixtable/2"><c>safe_fixtable/2</c></seealso>,
-          a traversal can fail if
-          concurrent updates are made to the table. For table
-          type <c>ordered_set</c>, the function returns the next key in
-          order, even if the object does no longer exist.</p>
+          a call to <c>next/2</c> will fail if <c><anno>Key1</anno></c> no longer
+	  exists in the table. For table type <c>ordered_set</c>, the function
+	  always returns the next key after <c><anno>Key1</anno></c> in term
+	  order, regardless whether <c><anno>Key1</anno></c> ever existed in the
+	  table.</p>
       </desc>
     </func>
 
     <func>
-      <name name="prev" arity="2"/>
+      <name name="prev" arity="2" since=""/>
       <fsummary>Return the previous key in an ETS table of type
         <c>ordered_set</c>.</fsummary>
       <desc>
@@ -1212,13 +1304,13 @@ ets:select(Table, MatchSpec),</code>
           table types, the function is synonymous to
           <seealso marker="#next/2"><c>next/2</c></seealso>.
           If no previous key exists, <c>'$end_of_table'</c> is returned.</p>
-        <p>To find the last key in the table, use
+        <p>To find the last key in an <c>ordered_set</c> table, use
           <seealso marker="#last/1"><c>last/1</c></seealso>.</p>
       </desc>
     </func>
 
     <func>
-      <name name="rename" arity="2"/>
+      <name name="rename" arity="2" since=""/>
       <fsummary>Rename a named ETS table.</fsummary>
       <desc>
         <p>Renames the named table <c><anno>Tab</anno></c> to the new name
@@ -1228,7 +1320,7 @@ ets:select(Table, MatchSpec),</code>
     </func>
 
     <func>
-      <name name="repair_continuation" arity="2"/>
+      <name name="repair_continuation" arity="2" since=""/>
       <fsummary>Repair a continuation from <c>ets:select/1 or ets:select/3</c>
         that has passed through external representation.</fsummary>
       <desc>
@@ -1283,11 +1375,20 @@ ets:select(ets:repair_continuation(Broken,MS)).</code>
     </func>
 
     <func>
-      <name name="safe_fixtable" arity="2"/>
+      <name name="safe_fixtable" arity="2" since=""/>
       <fsummary>Fix an ETS table for safe traversal.</fsummary>
       <desc>
         <p>Fixes a table of type <c>set</c>, <c>bag</c>, or
-          <c>duplicate_bag</c> for safe traversal.</p>
+        <c>duplicate_bag</c> for <seealso marker="#traversal">
+	safe traversal</seealso> using
+	<seealso marker="#first/1"><c>first/1</c></seealso> &amp;
+	<seealso marker="#next/2"><c>next/2</c></seealso>,
+	<seealso marker="#match/3"><c>match/3</c></seealso> &amp;
+	<seealso marker="#match/1"><c>match/1</c></seealso>,
+	<seealso marker="#match_object/3"><c>match_object/3</c></seealso> &amp;
+	<seealso marker="#match_object/1"><c>match_object/1</c></seealso>, or
+	<seealso marker="#select/3"><c>select/3</c></seealso> &amp;
+	<seealso marker="#select/1"><c>select/1</c></seealso>.</p>
         <p>A process fixes a table by calling
           <c>safe_fixtable(<anno>Tab</anno>, true)</c>. The table remains
           fixed until the process releases it by calling
@@ -1300,11 +1401,11 @@ ets:select(ets:repair_continuation(Broken,MS)).</code>
         <p>When a table is fixed, a sequence of
           <seealso marker="#first/1"><c>first/1</c></seealso> and
           <seealso marker="#next/2"><c>next/2</c></seealso> calls are
-          guaranteed to succeed, and each object in
-          the table is returned only once, even if objects
-          are removed or inserted during the traversal. The keys for new
-          objects inserted during the traversal <em>can</em> be returned by
-          <c>next/2</c> (it depends on the internal ordering of the keys).</p>
+          guaranteed to succeed even if keys are removed during the
+	  traversal. The keys for objects inserted or deleted during a
+	  traversal may or may not be returned by <c>next/2</c> depending on
+	  the ordering of keys within the table and if the key exists at the time
+	  <c>next/2</c> is called.</p>
         <p><em>Example:</em></p>
         <code type="none">
 clean_all_with_value(Tab,X) ->
@@ -1322,7 +1423,7 @@ clean_all_with_value(Tab,X,Key) ->
             true
     end,
     clean_all_with_value(Tab,X,ets:next(Tab,Key)).</code>
-        <p>Notice that no deleted objects are removed from a
+        <p>Notice that deleted objects are not freed from a
           fixed table until it has been released. If a process fixes a
           table but never releases it, the memory used by the deleted
           objects is never freed. The performance of operations on
@@ -1332,14 +1433,14 @@ clean_all_with_value(Tab,X,Key) ->
           <c>info(Tab, safe_fixed_monotonic_time)</c></seealso>. A system with
           many processes fixing tables can need a monitor that sends alarms
           when tables have been fixed for too long.</p>
-        <p>Notice that for table type <c>ordered_set</c>,
-          <c>safe_fixtable/2</c> is not necessary, as calls to
-          <c>first/1</c> and <c>next/2</c> always succeed.</p>
+        <p>Notice that <c>safe_fixtable/2</c> is not necessary for table type
+	<c>ordered_set</c> and for traversals done by a single ETS function call,
+	like <seealso marker="#select/2"><c>select/2</c></seealso>.</p>
       </desc>
     </func>
 
     <func>
-      <name name="select" arity="1"/>
+      <name name="select" arity="1" since=""/>
       <fsummary>Continue matching objects in an ETS table.</fsummary>
       <desc>
         <p>Continues a match started with
@@ -1353,7 +1454,7 @@ clean_all_with_value(Tab,X,Key) ->
     </func>
 
     <func>
-      <name name="select" arity="2"/>
+      <name name="select" arity="2" since=""/>
       <fsummary>Match the objects in an ETS table against a
         match specification.</fsummary>
       <desc>
@@ -1448,7 +1549,7 @@ is_integer(X), is_integer(Y), X + Y < 4711]]></code>
     </func>
 
     <func>
-      <name name="select" arity="3"/>
+      <name name="select" arity="3" since=""/>
       <fsummary>Match the objects in an ETS table against a match
         specification and return part of the answers.</fsummary>
       <desc>
@@ -1462,12 +1563,15 @@ is_integer(X), is_integer(Y), X + Y < 4711]]></code>
           table, which is still faster than traversing the table object by
           object using <seealso marker="#first/1"><c>first/1</c></seealso>
           and <seealso marker="#next/2"><c>next/2</c></seealso>.</p>
-        <p>If the table is empty, <c>'$end_of_table'</c> is returned.</p>
+          <p>If the table is empty, <c>'$end_of_table'</c> is returned.</p>
+	  <p>Use <seealso marker="#safe_fixtable/2"><c>safe_fixtable/2</c></seealso>
+	  to guarantee <seealso marker="#traversal">safe traversal</seealso>
+	  for subsequent calls to <seealso marker="#select/1"><c>select/1</c></seealso>.</p>
       </desc>
     </func>
 
     <func>
-      <name name="select_count" arity="2"/>
+      <name name="select_count" arity="2" since=""/>
       <fsummary>Match the objects in an ETS table against a match
         specification and return the number of objects for which the match
         specification returned <c>true</c>.</fsummary>
@@ -1486,7 +1590,7 @@ is_integer(X), is_integer(Y), X + Y < 4711]]></code>
     </func>
 
     <func>
-      <name name="select_delete" arity="2"/>
+      <name name="select_delete" arity="2" since=""/>
       <fsummary>Match the objects in an ETS table against a match
         specification and delete objects where the match specification
         returns <c>true</c>.</fsummary>
@@ -1510,7 +1614,7 @@ is_integer(X), is_integer(Y), X + Y < 4711]]></code>
     </func>
 
     <func>
-      <name name="select_replace" arity="2"/>
+      <name name="select_replace" arity="2" since="OTP 20.0"/>
       <fsummary>Match and replace objects atomically in an ETS table</fsummary>
       <desc>
         <p>Matches the objects in the table <c><anno>Tab</anno></c> using a
@@ -1519,7 +1623,7 @@ is_integer(X), is_integer(Y), X + Y < 4711]]></code>
           the match specification result.</p>
 	<p>The match-and-replace operation for each individual object is guaranteed to be
 	  <seealso marker="#concurrency">atomic and isolated</seealso>. The
-	  <c>select_replace</c> table iteration as a whole, like all other select functions,
+	  <c>select_replace</c> table traversal as a whole, like all other select functions,
 	  does not give such guarantees.</p>
 	<p>The match specifiction must be guaranteed to <em>retain the key</em>
 	  of any matched object. If not, <c>select_replace</c> will fail with <c>badarg</c>
@@ -1549,7 +1653,7 @@ Success = (1 =:= ets:select_replace(T, [{Old, [], [{const, New}]}])),
     </func>
 
     <func>
-      <name name="select_reverse" arity="1"/>
+      <name name="select_reverse" arity="1" since="OTP R14B"/>
       <fsummary>Continue matching objects in an ETS table.</fsummary>
       <desc>
       <p>Continues a match started with <seealso marker="#select_reverse/3">
@@ -1582,7 +1686,7 @@ Success = (1 =:= ets:select_replace(T, [{Old, [], [{const, New}]}])),
     </func>
 
     <func>
-      <name name="select_reverse" arity="2"/>
+      <name name="select_reverse" arity="2" since="OTP R14B"/>
       <fsummary>Match the objects in an ETS table against a
         match specification.</fsummary>
       <desc>
@@ -1594,7 +1698,7 @@ Success = (1 =:= ets:select_replace(T, [{Old, [], [{const, New}]}])),
     </func>
 
     <func>
-      <name name="select_reverse" arity="3"/>
+      <name name="select_reverse" arity="3" since="OTP R14B"/>
       <fsummary>Match the objects in an ETS table against a
         match specification and return part of the answers.</fsummary>
       <desc>
@@ -1612,7 +1716,7 @@ Success = (1 =:= ets:select_replace(T, [{Old, [], [{const, New}]}])),
     </func>
 
     <func>
-      <name name="setopts" arity="2"/>
+      <name name="setopts" arity="2" since=""/>
       <fsummary>Set table options.</fsummary>
       <desc>
         <p>Sets table options. The only allowed option to be set after the
@@ -1623,7 +1727,7 @@ Success = (1 =:= ets:select_replace(T, [{Old, [], [{const, New}]}])),
     </func>
 
     <func>
-      <name name="slot" arity="2"/>
+      <name name="slot" arity="2" since=""/>
       <fsummary>Return all objects in a specified slot of an ETS table.
       </fsummary>
       <desc>
@@ -1648,7 +1752,7 @@ Success = (1 =:= ets:select_replace(T, [{Old, [], [{const, New}]}])),
     </func>
 
     <func>
-      <name name="tab2file" arity="2"/>
+      <name name="tab2file" arity="2" since=""/>
       <fsummary>Dump an ETS table to a file.</fsummary>
       <desc>
         <p>Dumps table <c><anno>Tab</anno></c> to file
@@ -1659,7 +1763,7 @@ Success = (1 =:= ets:select_replace(T, [{Old, [], [{const, New}]}])),
     </func>
 
     <func>
-      <name name="tab2file" arity="3"/>
+      <name name="tab2file" arity="3" since=""/>
       <fsummary>Dump an ETS table to a file.</fsummary>
       <desc>
         <p>Dumps table <c><anno>Tab</anno></c> to file
@@ -1706,7 +1810,7 @@ Success = (1 =:= ets:select_replace(T, [{Old, [], [{const, New}]}])),
     </func>
 
     <func>
-      <name name="tab2list" arity="1"/>
+      <name name="tab2list" arity="1" since=""/>
       <fsummary>Return a list of all objects in an ETS table.</fsummary>
       <desc>
         <p>Returns a list of all objects in table <c><anno>Tab</anno></c>.</p>
@@ -1714,7 +1818,7 @@ Success = (1 =:= ets:select_replace(T, [{Old, [], [{const, New}]}])),
     </func>
 
     <func>
-      <name name="tabfile_info" arity="1"/>
+      <name name="tabfile_info" arity="1" since=""/>
       <fsummary>Return a list of all objects in an ETS table.</fsummary>
       <desc>
         <p>Returns information about the table dumped to file by
@@ -1792,8 +1896,8 @@ Success = (1 =:= ets:select_replace(T, [{Old, [], [{const, New}]}])),
     </func>
 
     <func>
-      <name name="table" arity="1"/>
-      <name name="table" arity="2"/>
+      <name name="table" arity="1" since=""/>
+      <name name="table" arity="2" since=""/>
       <fsummary>Return a QLC query handle.</fsummary>
       <desc>
         <p>Returns a Query List
@@ -1869,7 +1973,7 @@ true</pre>
     </func>
 
     <func>
-      <name name="take" arity="2"/>
+      <name name="take" arity="2" since="OTP 18.0"/>
       <fsummary>Return and remove all objects with a specified key from an
         ETS table.</fsummary>
       <desc>
@@ -1884,7 +1988,7 @@ true</pre>
       </desc>
     </func>
     <func>
-      <name name="test_ms" arity="2"/>
+      <name name="test_ms" arity="2" since=""/>
       <fsummary>Test a match specification for use in <c>select/2</c>.
       </fsummary>
       <desc>
@@ -1911,7 +2015,7 @@ true</pre>
     </func>
 
     <func>
-      <name name="to_dets" arity="2"/>
+      <name name="to_dets" arity="2" since=""/>
       <fsummary>Fill a Dets table with objects from an ETS table.
       </fsummary>
       <desc>
@@ -1922,12 +2026,12 @@ true</pre>
     </func>
 
     <func> 
-      <name name="update_counter" arity="3" clause_i="1"/>
-      <name name="update_counter" arity="4" clause_i="1"/>
-      <name name="update_counter" arity="3" clause_i="2"/>
-      <name name="update_counter" arity="4" clause_i="2"/>
-      <name name="update_counter" arity="3" clause_i="3"/>
-      <name name="update_counter" arity="4" clause_i="3"/>
+      <name name="update_counter" arity="3" clause_i="1" since=""/>
+      <name name="update_counter" arity="4" clause_i="1" since="OTP 18.0"/>
+      <name name="update_counter" arity="3" clause_i="2" since=""/>
+      <name name="update_counter" arity="4" clause_i="2" since="OTP 18.0"/>
+      <name name="update_counter" arity="3" clause_i="3" since=""/>
+      <name name="update_counter" arity="4" clause_i="3" since="OTP 18.0"/>
       <fsummary>Update a counter object in an ETS table.</fsummary>
       <type variable="Tab"/>
       <type variable="Key"/>
@@ -1940,9 +2044,8 @@ true</pre>
         <p>This function provides an efficient way to update one or more 
           counters, without the trouble of having to look up an object, update 
           the object by incrementing an element, and insert the resulting
-          object into the table again. (The update is done atomically,
-          that is, no process 
-          can access the ETS table in the middle of the operation.)</p>
+          object into the table again. The operation is guaranteed to be
+          <seealso marker="#concurrency">atomic and isolated</seealso>.</p>
         <p>This function destructively update the object with key
           <c><anno>Key</anno></c> in table <c><anno>Tab</anno></c> by adding
           <c><anno>Incr</anno></c> to the element at position
@@ -2006,8 +2109,8 @@ true</pre>
     </func>
 
     <func>
-      <name name="update_element" arity="3" clause_i="1"/>
-      <name name="update_element" arity="3" clause_i="2"/>
+      <name name="update_element" arity="3" clause_i="1" since=""/>
+      <name name="update_element" arity="3" clause_i="2" since=""/>
       <fsummary>Update the <c>Pos</c>:th element of the object with a
         specified key in an ETS table.</fsummary>
       <type variable="Tab"/>
@@ -2049,7 +2152,7 @@ true</pre>
     </func>
 
     <func>
-      <name name="whereis" arity="1"/>
+      <name name="whereis" arity="1" since="OTP 21.0"/>
       <fsummary>Retrieves the tid() of a named table.</fsummary>
       <desc>
         <p>This function returns the
diff --git a/lib/stdlib/doc/src/file_sorter.xml b/lib/stdlib/doc/src/file_sorter.xml
index e988d58c2f..942d98fe61 100644
--- a/lib/stdlib/doc/src/file_sorter.xml
+++ b/lib/stdlib/doc/src/file_sorter.xml
@@ -32,7 +32,7 @@
     <rev>PA1</rev>
     <file>file_sorter.xml</file>
   </header>
-  <module>file_sorter</module>
+  <module since="">file_sorter</module>
   <modulesummary>File sorter.</modulesummary>
   <description>
     <p>This module contains functions for sorting terms on files, merging
@@ -334,8 +334,8 @@ output(L) ->
 
   <funcs>
     <func>
-      <name name="check" arity="1"/>
-      <name name="check" arity="2"/>
+      <name name="check" arity="1" since=""/>
+      <name name="check" arity="2" since=""/>
       <fsummary>Check whether terms on files are sorted.</fsummary>
       <desc>
         <p>Checks files for sortedness. If a file is not sorted, the
@@ -347,8 +347,8 @@ output(L) ->
     </func>
 
     <func>
-      <name name="keycheck" arity="2"/>
-      <name name="keycheck" arity="3"/>
+      <name name="keycheck" arity="2" since=""/>
+      <name name="keycheck" arity="3" since=""/>
       <fsummary>Check whether terms on files are sorted by key.</fsummary>
       <desc>
         <p>Checks files for sortedness. If a file is not sorted, the
@@ -360,8 +360,8 @@ output(L) ->
     </func>
 
     <func>
-      <name name="keymerge" arity="3"/>
-      <name name="keymerge" arity="4"/>
+      <name name="keymerge" arity="3" since=""/>
+      <name name="keymerge" arity="4" since=""/>
       <fsummary>Merge terms on files by key.</fsummary>
       <desc>
         <p>Merges tuples on files. Each input file is assumed to be
@@ -372,7 +372,7 @@ output(L) ->
     </func>
 
     <func>
-      <name name="keysort" arity="2"/>
+      <name name="keysort" arity="2" since=""/>
       <fsummary>Sort terms on files by key.</fsummary>
       <desc>
         <p>Sorts tuples on files.</p>
@@ -382,8 +382,8 @@ output(L) ->
     </func>
 
     <func>
-      <name name="keysort" arity="3"/>
-      <name name="keysort" arity="4"/>
+      <name name="keysort" arity="3" since=""/>
+      <name name="keysort" arity="4" since=""/>
       <fsummary>Sort terms on files by key.</fsummary>
       <desc>
         <p>Sorts tuples on files. The sort is performed on the
@@ -397,8 +397,8 @@ output(L) ->
     </func>
 
     <func>
-      <name name="merge" arity="2"/>
-      <name name="merge" arity="3"/>
+      <name name="merge" arity="2" since=""/>
+      <name name="merge" arity="3" since=""/>
       <fsummary>Merge terms on files.</fsummary>
       <desc>
         <p>Merges terms on files. Each input file is assumed to be
@@ -409,7 +409,7 @@ output(L) ->
     </func>
 
     <func>
-      <name name="sort" arity="1"/>
+      <name name="sort" arity="1" since=""/>
       <fsummary>Sort terms on files.</fsummary>
       <desc>
         <p>Sorts terms on files.</p>
@@ -419,8 +419,8 @@ output(L) ->
     </func>
 
     <func>
-      <name name="sort" arity="2"/>
-      <name name="sort" arity="3"/>
+      <name name="sort" arity="2" since=""/>
+      <name name="sort" arity="3" since=""/>
       <fsummary>Sort terms on files.</fsummary>
       <desc>
         <p>Sorts terms on files.</p>
diff --git a/lib/stdlib/doc/src/filelib.xml b/lib/stdlib/doc/src/filelib.xml
index 3b5be75bc0..5df415834f 100644
--- a/lib/stdlib/doc/src/filelib.xml
+++ b/lib/stdlib/doc/src/filelib.xml
@@ -32,7 +32,7 @@
     <rev>A</rev>
     <file>filelib.xml</file>
   </header>
-  <module>filelib</module>
+  <module since="">filelib</module>
   <modulesummary>File utilities, such as wildcard matching of filenames.
   </modulesummary>
   <description>
@@ -94,7 +94,7 @@
 
   <funcs>
     <func>
-      <name name="ensure_dir" arity="1"/>
+      <name name="ensure_dir" arity="1" since=""/>
       <fsummary>Ensure that all parent directories for a file or directory
         exist.</fsummary>
       <desc>
@@ -108,7 +108,7 @@
     </func>
 
     <func>
-      <name name="file_size" arity="1"/>
+      <name name="file_size" arity="1" since=""/>
       <fsummary>Return the size in bytes of a file.</fsummary>
       <desc>
         <p>Returns the size of the specified file.</p>
@@ -116,7 +116,7 @@
     </func>
 
     <func>
-      <name name="fold_files" arity="5"/>
+      <name name="fold_files" arity="5" since=""/>
       <fsummary>Fold over all files matching a regular expression.</fsummary>
       <desc>
         <p>Folds function <c><anno>Fun</anno></c> over all (regular) files
@@ -142,7 +142,7 @@
     </func>
 
     <func>
-      <name name="is_dir" arity="1"/>
+      <name name="is_dir" arity="1" since=""/>
       <fsummary>Test whether <c>Name</c> refers to a directory.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>Name</anno></c>
@@ -151,7 +151,7 @@
     </func>
 
     <func>
-      <name name="is_file" arity="1"/>
+      <name name="is_file" arity="1" since=""/>
       <fsummary>Test whether <c>Name</c> refers to a file or directory.
       </fsummary>
       <desc>
@@ -161,7 +161,7 @@
     </func>
 
     <func>
-      <name name="is_regular" arity="1"/>
+      <name name="is_regular" arity="1" since=""/>
       <fsummary>Test whether <c>Name</c> refers to a (regular) file.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>Name</anno></c>
@@ -170,7 +170,7 @@
     </func>
 
     <func>
-      <name name="last_modified" arity="1"/>
+      <name name="last_modified" arity="1" since=""/>
       <fsummary>Return the local date and time when a file was last modified.
       </fsummary>
       <desc>
@@ -180,7 +180,7 @@
     </func>
 
     <func>
-      <name name="wildcard" arity="1"/>
+      <name name="wildcard" arity="1" since=""/>
       <fsummary>Match filenames using Unix-style wildcards.</fsummary>
       <desc>
         <p>Returns a list of all files that match Unix-style wildcard string
@@ -252,7 +252,7 @@ filelib:wildcard("lib/**/*.{erl,hrl}")</code>
     </func>
 
     <func>
-      <name name="wildcard" arity="2"/>
+      <name name="wildcard" arity="2" since=""/>
       <fsummary>Match filenames using Unix-style wildcards starting at a
         specified directory.</fsummary>
       <desc>
@@ -263,8 +263,8 @@ filelib:wildcard("lib/**/*.{erl,hrl}")</code>
     </func>
 
     <func>
-      <name name="find_file" arity="2"/>
-      <name name="find_file" arity="3"/>
+      <name name="find_file" arity="2" since="OTP 20.0"/>
+      <name name="find_file" arity="3" since="OTP 20.0"/>
       <fsummary>Find a file relative to a given directory.</fsummary>
       <desc>
         <p>Looks for a file of the given name by applying suffix rules to
@@ -278,7 +278,7 @@ filelib:wildcard("lib/**/*.{erl,hrl}")</code>
       </desc>
     </func>
     <func>
-      <name name="find_source" arity="1"/>
+      <name name="find_source" arity="1" since="OTP 20.0"/>
       <fsummary>Find the source file for a given object file.</fsummary>
       <desc>
         <p>Equivalent to <c>find_source(Base, Dir)</c>, where <c>Dir</c> is
@@ -287,8 +287,8 @@ filelib:wildcard("lib/**/*.{erl,hrl}")</code>
       </desc>
     </func>
     <func>
-      <name name="find_source" arity="2"/>
-      <name name="find_source" arity="3"/>
+      <name name="find_source" arity="2" since="OTP 20.0"/>
+      <name name="find_source" arity="3" since="OTP 20.0"/>
       <fsummary>Find a source file relative to a given directory.</fsummary>
       <desc>
         <p>Applies file extension specific rules to find the source file for
diff --git a/lib/stdlib/doc/src/filename.xml b/lib/stdlib/doc/src/filename.xml
index 36254c2d00..60b7eb3436 100644
--- a/lib/stdlib/doc/src/filename.xml
+++ b/lib/stdlib/doc/src/filename.xml
@@ -28,7 +28,7 @@
     <date>1997-11-13</date>
     <rev>B</rev>
   </header>
-  <module>filename</module>
+  <module since="">filename</module>
   <modulesummary>Filename manipulation functions.</modulesummary>
   <description>
     <p>This module provides functions
@@ -87,7 +87,7 @@
  
   <funcs>
     <func>
-      <name name="absname" arity="1"/>
+      <name name="absname" arity="1" since=""/>
       <fsummary>Convert a filename to an absolute name, relative the working
         directory.</fsummary>
       <desc>
@@ -119,7 +119,7 @@
     </func>
 
     <func>
-      <name name="absname" arity="2"/>
+      <name name="absname" arity="2" since=""/>
       <fsummary>Convert a filename to an absolute name, relative a specified
         directory.</fsummary>
       <desc>
@@ -130,7 +130,7 @@
     </func>
 
     <func>
-      <name name="absname_join" arity="2"/>
+      <name name="absname_join" arity="2" since=""/>
       <fsummary>Join an absolute directory with a relative filename.</fsummary>
       <desc>
         <p>Joins an absolute directory with a relative filename. Similar to
@@ -144,8 +144,8 @@
     </func>
 
     <func>
-      <name name="basedir" arity="2" clause_i="1"/>
-      <name name="basedir" arity="2" clause_i="2"/>
+      <name name="basedir" arity="2" clause_i="1" since="OTP 19.0"/>
+      <name name="basedir" arity="2" clause_i="2" since="OTP 19.0"/>
       <fsummary>Equivalent to <c>basedir(<anno>PathType</anno>,
            <anno>Application</anno>,#{})</c> or
 	   <c>basedir(<anno>PathsType</anno>, <anno>Application</anno>,#{})</c>.
@@ -165,8 +165,8 @@ basedir(<anno>PathsType</anno>, <anno>Application</anno>, #{})</seealso>.
       </desc>
     </func>
     <func>
-      <name name="basedir" arity="3" clause_i="1" anchor="basedir_3_1"/>
-      <name name="basedir" arity="3" clause_i="2" anchor="basedir_3_2"/>
+      <name name="basedir" arity="3" clause_i="1" anchor="basedir_3_1" since="OTP 19.0"/>
+      <name name="basedir" arity="3" clause_i="2" anchor="basedir_3_2" since="OTP 19.0"/>
       <fsummary></fsummary>
       <type variable="PathType" name_i="1"/>
       <type name="basedir_path_type"/>
@@ -314,7 +314,7 @@ true
       </desc>
     </func>
     <func>
-      <name name="basename" arity="1"/>
+      <name name="basename" arity="1" since=""/>
       <fsummary>Return the last component of a filename.</fsummary>
       <desc>
         <p>Returns the last component of <c><anno>Filename</anno></c>, or
@@ -332,7 +332,7 @@ true
     </func>
 
     <func>
-      <name name="basename" arity="2"/>
+      <name name="basename" arity="2" since=""/>
       <fsummary>Return the last component of a filename, stripped of the
         specified extension.</fsummary>
       <desc>
@@ -357,7 +357,7 @@ true
     </func>
 
     <func>
-      <name name="dirname" arity="1"/>
+      <name name="dirname" arity="1" since=""/>
       <fsummary>Return the directory part of a path name.</fsummary>
       <desc>
         <p>Returns the directory part of <c><anno>Filename</anno></c>.</p>
@@ -374,7 +374,7 @@ true
     </func>
 
     <func>
-      <name name="extension" arity="1"/>
+      <name name="extension" arity="1" since=""/>
       <fsummary>Return the file extension.</fsummary>
       <desc>
         <p>Returns the file extension of <c><anno>Filename</anno></c>,
@@ -390,8 +390,8 @@ true
     </func>
 
     <func>
-      <name name="find_src" arity="1"/>
-      <name name="find_src" arity="2"/>
+      <name name="find_src" arity="1" since=""/>
+      <name name="find_src" arity="2" since=""/>
       <fsummary>Find the filename and compiler options for a module.</fsummary>
       <desc>
         <p>Finds the source filename and compiler options for a module.
@@ -438,7 +438,7 @@ true
     </func>
 
     <func>
-      <name name="flatten" arity="1"/>
+      <name name="flatten" arity="1" since=""/>
       <fsummary>Convert a filename to a flat string.</fsummary>
       <desc>
         <p>Converts a possibly deep list filename consisting of
@@ -448,7 +448,7 @@ true
     </func>
 
     <func>
-      <name name="join" arity="1"/>
+      <name name="join" arity="1" since=""/>
       <fsummary>Join a list of filename components with directory separators.
       </fsummary>
       <desc>
@@ -476,7 +476,7 @@ true
     </func>
 
     <func>
-      <name name="join" arity="2"/>
+      <name name="join" arity="2" since=""/>
       <fsummary>Join two filename components with directory separators.
       </fsummary>
       <desc>
@@ -487,7 +487,7 @@ true
     </func>
 
     <func>
-      <name name="nativename" arity="1"/>
+      <name name="nativename" arity="1" since=""/>
       <fsummary>Return the native form of a file path.</fsummary>
       <desc>
         <p>Converts <c><anno>Path</anno></c> to a form accepted by the command
@@ -506,7 +506,7 @@ true
     </func>
 
     <func>
-      <name name="pathtype" arity="1"/>
+      <name name="pathtype" arity="1" since=""/>
       <fsummary>Return the path type.</fsummary>
       <desc>
         <p>Returns the path type, which is one of the following:</p>
@@ -536,8 +536,8 @@ true
     </func>
 
     <func>
-      <name name="rootname" arity="1"/>
-      <name name="rootname" arity="2"/>
+      <name name="rootname" arity="1" since=""/>
+      <name name="rootname" arity="2" since=""/>
       <fsummary>Remove a filename extension.</fsummary>
       <desc>
         <p>Removes a filename extension. <c>rootname/2</c> works as
@@ -546,7 +546,7 @@ true
         <p><em>Examples:</em></p>
         <pre>
 20> <input>filename:rootname("/beam.src/kalle").</input>
-/beam.src/kalle"
+"/beam.src/kalle"
 21> <input>filename:rootname("/beam.src/foo.erl").</input>
 "/beam.src/foo"
 22> <input>filename:rootname("/beam.src/foo.erl", ".erl").</input>
@@ -557,7 +557,7 @@ true
     </func>
 
     <func>
-      <name name="safe_relative_path" arity="1"/>
+      <name name="safe_relative_path" arity="1" since="OTP 19.3"/>
       <fsummary>Sanitize a relative path to avoid directory traversal attacks.</fsummary>
       <desc>
         <p>Sanitizes the relative path by eliminating ".." and "."
@@ -584,7 +584,7 @@ unsafe</pre>
     </func>
 
     <func>
-      <name name="split" arity="1"/>
+      <name name="split" arity="1" since=""/>
       <fsummary>Split a filename into its path components.</fsummary>
       <desc>
         <p>Returns a list whose elements are the path components of
diff --git a/lib/stdlib/doc/src/gb_sets.xml b/lib/stdlib/doc/src/gb_sets.xml
index 03397b4503..a9596c6e4d 100644
--- a/lib/stdlib/doc/src/gb_sets.xml
+++ b/lib/stdlib/doc/src/gb_sets.xml
@@ -28,7 +28,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>gb_sets</module>
+  <module since="">gb_sets</module>
   <modulesummary>General balanced trees.</modulesummary>
   <description>
     <p>This module provides ordered sets using Prof. Arne Andersson's
@@ -123,8 +123,8 @@
 
   <funcs>
     <func>
-      <name name="add" arity="2"/>
-      <name name="add_element" arity="2"/>
+      <name name="add" arity="2" since=""/>
+      <name name="add_element" arity="2" since=""/>
       <fsummary>Add a (possibly existing) element to a set.</fsummary>
       <desc>
         <p>Returns a new set formed from <c><anno>Set1</anno></c> with
@@ -135,7 +135,7 @@
     </func>
 
     <func>
-      <name name="balance" arity="1"/>
+      <name name="balance" arity="1" since=""/>
       <fsummary>Rebalance tree representation of a set.</fsummary>
       <desc>
         <p>Rebalances the tree representation of <c><anno>Set1</anno></c>.
@@ -149,7 +149,7 @@
     </func>
 
     <func>
-      <name name="del_element" arity="2"/>
+      <name name="del_element" arity="2" since=""/>
       <fsummary>Remove a (possibly non-existing) element from a set.</fsummary>
       <desc>
         <p>Returns a new set formed from <c><anno>Set1</anno></c> with
@@ -160,7 +160,7 @@
     </func>
 
     <func>
-      <name name="delete" arity="2"/>
+      <name name="delete" arity="2" since=""/>
       <fsummary>Remove an element from a set.</fsummary>
       <desc>
         <p>Returns a new set formed from <c><anno>Set1</anno></c> with
@@ -171,7 +171,7 @@
     </func>
 
     <func>
-      <name name="delete_any" arity="2"/>
+      <name name="delete_any" arity="2" since=""/>
       <fsummary>Remove a (possibly non-existing) element from a set.</fsummary>
       <desc>
         <p>Returns a new set formed from <c><anno>Set1</anno></c> with
@@ -182,7 +182,7 @@
     </func>
 
     <func>
-      <name name="difference" arity="2"/>
+      <name name="difference" arity="2" since=""/>
       <fsummary>Return the difference of two sets.</fsummary>
       <desc>
         <p>Returns only the elements of <c><anno>Set1</anno></c> that are not
@@ -191,7 +191,7 @@
     </func>
 
     <func>
-      <name name="empty" arity="0"/>
+      <name name="empty" arity="0" since=""/>
       <fsummary>Return an empty set.</fsummary>
       <desc>
         <p>Returns a new empty set.</p>
@@ -199,7 +199,7 @@
     </func>
 
     <func>
-      <name name="filter" arity="2"/>
+      <name name="filter" arity="2" since=""/>
       <fsummary>Filter set elements.</fsummary>
       <desc>
         <p>Filters elements in <c><anno>Set1</anno></c> using predicate function
@@ -208,7 +208,7 @@
     </func>
 
     <func>
-      <name name="fold" arity="3"/>
+      <name name="fold" arity="3" since=""/>
       <fsummary>Fold over set elements.</fsummary>
       <desc>
         <p>Folds <c><anno>Function</anno></c> over every element in
@@ -218,7 +218,7 @@
     </func>
 
     <func>
-      <name name="from_list" arity="1"/>
+      <name name="from_list" arity="1" since=""/>
       <fsummary>Convert a list into a set.</fsummary>
       <desc>
         <p>Returns a set of the elements in <c><anno>List</anno></c>, where
@@ -227,7 +227,7 @@
     </func>
 
     <func>
-      <name name="from_ordset" arity="1"/>
+      <name name="from_ordset" arity="1" since=""/>
       <fsummary>Make a set from an ordset list.</fsummary>
       <desc>
         <p>Turns an ordered-set list <c><anno>List</anno></c> into a set.
@@ -236,7 +236,7 @@
     </func>
 
     <func>
-      <name name="insert" arity="2"/>
+      <name name="insert" arity="2" since=""/>
       <fsummary>Add a new element to a set.</fsummary>
       <desc>
         <p>Returns a new set formed from <c><anno>Set1</anno></c> with
@@ -247,7 +247,7 @@
     </func>
 
     <func>
-      <name name="intersection" arity="1"/>
+      <name name="intersection" arity="1" since=""/>
       <fsummary>Return the intersection of a list of sets.</fsummary>
       <desc>
         <p>Returns the intersection of the non-empty list of sets.</p>
@@ -255,7 +255,7 @@
     </func>
 
     <func>
-      <name name="intersection" arity="2"/>
+      <name name="intersection" arity="2" since=""/>
       <fsummary>Return the intersection of two sets.</fsummary>
       <desc>
         <p>Returns the intersection of <c><anno>Set1</anno></c> and
@@ -264,7 +264,7 @@
     </func>
 
     <func>
-      <name name="is_disjoint" arity="2"/>
+      <name name="is_disjoint" arity="2" since=""/>
       <fsummary>Check whether two sets are disjoint.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>Set1</anno></c> and
@@ -274,7 +274,7 @@
     </func>
 
     <func>
-      <name name="is_element" arity="2"/>
+      <name name="is_element" arity="2" since=""/>
       <fsummary>Test for membership of a set.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>Element</anno></c> is an element of
@@ -283,7 +283,7 @@
     </func>
 
     <func>
-      <name name="is_empty" arity="1"/>
+      <name name="is_empty" arity="1" since=""/>
       <fsummary>Test for empty set.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>Set</anno></c> is an empty set,
@@ -292,7 +292,7 @@
     </func>
 
     <func>
-      <name name="is_member" arity="2"/>
+      <name name="is_member" arity="2" since=""/>
       <fsummary>Test for membership of a set.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>Element</anno></c> is an element of
@@ -301,7 +301,7 @@
     </func>
 
     <func>
-      <name name="is_set" arity="1"/>
+      <name name="is_set" arity="1" since=""/>
       <fsummary>Test for a set.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>Term</anno></c> appears to be a set,
@@ -310,7 +310,7 @@
     </func>
 
     <func>
-      <name name="is_subset" arity="2"/>
+      <name name="is_subset" arity="2" since=""/>
       <fsummary>Test for subset.</fsummary>
       <desc>
         <p>Returns <c>true</c> when every element of <c><anno>Set1</anno></c> is
@@ -319,7 +319,7 @@
     </func>
 
     <func>
-      <name name="iterator" arity="1"/>
+      <name name="iterator" arity="1" since=""/>
       <fsummary>Return an iterator for a set.</fsummary>
       <desc>
         <p>Returns an iterator that can be used for traversing the entries of
@@ -336,7 +336,7 @@
     </func>
 
     <func>
-      <name name="iterator_from" arity="2"/>
+      <name name="iterator_from" arity="2" since="OTP 18.0"/>
       <fsummary>Return an iterator for a set starting from a specified element.
       </fsummary>
       <desc>
@@ -351,7 +351,7 @@
     </func>
 
     <func>
-      <name name="largest" arity="1"/>
+      <name name="largest" arity="1" since=""/>
       <fsummary>Return largest element.</fsummary>
       <desc>
         <p>Returns the largest element in <c><anno>Set</anno></c>. Assumes that
@@ -360,7 +360,7 @@
     </func>
 
     <func>
-      <name name="new" arity="0"/>
+      <name name="new" arity="0" since=""/>
       <fsummary>Return an empty set.</fsummary>
       <desc>
         <p>Returns a new empty set.</p>
@@ -368,7 +368,7 @@
     </func>
 
     <func>
-      <name name="next" arity="1"/>
+      <name name="next" arity="1" since=""/>
       <fsummary>Traverse a set with an iterator.</fsummary>
       <desc>
         <p>Returns <c>{<anno>Element</anno>, <anno>Iter2</anno>}</c>, where
@@ -381,7 +381,7 @@
     </func>
 
     <func>
-      <name name="singleton" arity="1"/>
+      <name name="singleton" arity="1" since=""/>
       <fsummary>Return a set with one element.</fsummary>
       <desc>
         <p>Returns a set containing only element <c><anno>Element</anno></c>.
@@ -390,7 +390,7 @@
     </func>
 
     <func>
-      <name name="size" arity="1"/>
+      <name name="size" arity="1" since=""/>
       <fsummary>Return the number of elements in a set.</fsummary>
       <desc>
         <p>Returns the number of elements in <c><anno>Set</anno></c>.</p>
@@ -398,7 +398,7 @@
     </func>
 
     <func>
-      <name name="smallest" arity="1"/>
+      <name name="smallest" arity="1" since=""/>
       <fsummary>Return smallest element.</fsummary>
       <desc>
         <p>Returns the smallest element in <c><anno>Set</anno></c>. Assumes that
@@ -407,7 +407,7 @@
     </func>
 
     <func>
-      <name  name="subtract" arity="2"/>
+      <name  name="subtract" arity="2" since=""/>
       <fsummary>Return the difference of two sets.</fsummary>
       <desc>
         <p>Returns only the elements of <c><anno>Set1</anno></c> that are not
@@ -416,7 +416,7 @@
     </func>
 
     <func>
-      <name name="take_largest" arity="1"/>
+      <name name="take_largest" arity="1" since=""/>
       <fsummary>Extract largest element.</fsummary>
       <desc>
         <p>Returns <c>{<anno>Element</anno>, <anno>Set2</anno>}</c>, where
@@ -428,7 +428,7 @@
     </func>
 
     <func>
-      <name name="take_smallest" arity="1"/>
+      <name name="take_smallest" arity="1" since=""/>
       <fsummary>Extract smallest element.</fsummary>
       <desc>
         <p>Returns <c>{<anno>Element</anno>, <anno>Set2</anno>}</c>, where
@@ -440,7 +440,7 @@
     </func>
 
     <func>
-      <name name="to_list" arity="1"/>
+      <name name="to_list" arity="1" since=""/>
       <fsummary>Convert a set into a list.</fsummary>
       <desc>
         <p>Returns the elements of <c><anno>Set</anno></c> as a list.</p>
@@ -448,7 +448,7 @@
     </func>
 
     <func>
-      <name name="union" arity="1"/>
+      <name name="union" arity="1" since=""/>
       <fsummary>Return the union of a list of sets.</fsummary>
       <desc>
         <p>Returns the merged (union) set of the list of sets.</p>
@@ -456,7 +456,7 @@
     </func>
 
     <func>
-      <name name="union" arity="2"/>
+      <name name="union" arity="2" since=""/>
       <fsummary>Return the union of two sets.</fsummary>
       <desc>
         <p>Returns the merged (union) set of <c><anno>Set1</anno></c> and
diff --git a/lib/stdlib/doc/src/gb_trees.xml b/lib/stdlib/doc/src/gb_trees.xml
index 5cfff021c1..570c9c7cb6 100644
--- a/lib/stdlib/doc/src/gb_trees.xml
+++ b/lib/stdlib/doc/src/gb_trees.xml
@@ -28,7 +28,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>gb_trees</module>
+  <module since="">gb_trees</module>
   <modulesummary>General balanced trees.</modulesummary>
   <description>
     <p>This module provides Prof. Arne Andersson's General
@@ -75,7 +75,7 @@
 
   <funcs>
     <func>
-      <name name="balance" arity="1"/>
+      <name name="balance" arity="1" since=""/>
       <fsummary>Rebalance a tree.</fsummary>
       <desc>
         <p>Rebalances <c><anno>Tree1</anno></c>. Notice that this is
@@ -88,7 +88,7 @@
     </func>
 
     <func>
-      <name name="delete" arity="2"/>
+      <name name="delete" arity="2" since=""/>
       <fsummary>Remove a node from a tree.</fsummary>
       <desc>
         <p>Removes the node with key <c><anno>Key</anno></c> from
@@ -98,7 +98,7 @@
     </func>
 
     <func>
-      <name name="delete_any" arity="2"/>
+      <name name="delete_any" arity="2" since=""/>
       <fsummary>Remove a (possibly non-existing) node from a tree.</fsummary>
       <desc>
         <p>Removes the node with key <c><anno>Key</anno></c> from
@@ -109,7 +109,7 @@
     </func>
 
     <func>
-      <name name="take" arity="2"/>
+      <name name="take" arity="2" since="OTP 20.0"/>
       <fsummary>Returns a value and new tree without node with key <c>Key</c>.</fsummary>
       <desc>
         <p>Returns a value <c><anno>Value</anno></c> from node with key <c><anno>Key</anno></c>
@@ -120,7 +120,7 @@
     </func>
 
     <func>
-      <name name="take_any" arity="2"/>
+      <name name="take_any" arity="2" since="OTP 20.0"/>
       <fsummary>Returns a value and new tree without node with key <c>Key</c>.</fsummary>
       <desc>
         <p>Returns a value <c><anno>Value</anno></c> from node with key <c><anno>Key</anno></c>
@@ -131,7 +131,7 @@
     </func>
 
     <func>
-      <name name="empty" arity="0"/>
+      <name name="empty" arity="0" since=""/>
       <fsummary>Return an empty tree.</fsummary>
       <desc>
         <p>Returns a new empty tree.</p>
@@ -139,7 +139,7 @@
     </func>
 
     <func>
-      <name name="enter" arity="3"/>
+      <name name="enter" arity="3" since=""/>
       <fsummary>Insert or update key with value in a tree.</fsummary>
       <desc>
         <p>Inserts <c><anno>Key</anno></c> with value <c><anno>Value</anno></c>
@@ -151,7 +151,7 @@
     </func>
 
     <func>
-      <name name="from_orddict" arity="1"/>
+      <name name="from_orddict" arity="1" since=""/>
       <fsummary>Make a tree from an orddict.</fsummary>
       <desc>
         <p>Turns an ordered list <c><anno>List</anno></c> of key-value tuples
@@ -160,7 +160,7 @@
     </func>
 
     <func>
-      <name name="get" arity="2"/>
+      <name name="get" arity="2" since=""/>
       <fsummary>Look up a key in a tree, if present.</fsummary>
       <desc>
         <p>Retrieves the value stored with <c><anno>Key</anno></c> in
@@ -171,7 +171,7 @@
     </func>
 
     <func>
-      <name name="insert" arity="3"/>
+      <name name="insert" arity="3" since=""/>
       <fsummary>Insert a new key and value in a tree.</fsummary>
       <desc>
         <p>Inserts <c><anno>Key</anno></c> with value <c><anno>Value</anno></c>
@@ -182,7 +182,7 @@
     </func>
 
     <func>
-      <name name="is_defined" arity="2"/>
+      <name name="is_defined" arity="2" since=""/>
       <fsummary>Test for membership of a tree.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>Key</anno></c> is present in
@@ -191,7 +191,7 @@
     </func>
 
     <func>
-      <name name="is_empty" arity="1"/>
+      <name name="is_empty" arity="1" since=""/>
       <fsummary>Test for empty tree.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>Tree</anno></c> is an empty tree,
@@ -200,7 +200,7 @@
     </func>
 
     <func>
-      <name name="iterator" arity="1"/>
+      <name name="iterator" arity="1" since=""/>
       <fsummary>Return an iterator for a tree.</fsummary>
       <desc>
         <p>Returns an iterator that can be used for traversing the
@@ -218,7 +218,7 @@
     </func>
 
     <func>
-      <name name="iterator_from" arity="2"/>
+      <name name="iterator_from" arity="2" since="OTP 18.0"/>
       <fsummary>Return an iterator for a tree starting from a specified key.
       </fsummary>
       <desc>
@@ -233,7 +233,7 @@
     </func>
 
     <func>
-      <name name="keys" arity="1"/>
+      <name name="keys" arity="1" since=""/>
       <fsummary>Return a list of the keys in a tree.</fsummary>
       <desc>
         <p>Returns the keys in <c><anno>Tree</anno></c> as an ordered list.</p>
@@ -241,7 +241,7 @@
     </func>
 
     <func>
-      <name name="largest" arity="1"/>
+      <name name="largest" arity="1" since=""/>
       <fsummary>Return largest key and value.</fsummary>
       <desc>
         <p>Returns <c>{<anno>Key</anno>, <anno>Value</anno>}</c>, where
@@ -253,7 +253,7 @@
     </func>
 
     <func>
-      <name name="lookup" arity="2"/>
+      <name name="lookup" arity="2" since=""/>
       <fsummary>Look up a key in a tree.</fsummary>
       <desc>
         <p>Looks up <c><anno>Key</anno></c> in <c><anno>Tree</anno></c>.
@@ -263,7 +263,7 @@
     </func>
 
     <func>
-      <name name="map" arity="2"/>
+      <name name="map" arity="2" since=""/>
       <fsummary>Return largest key and value.</fsummary>
       <desc>
         <p>Maps function F(<anno>K</anno>, <anno>V1</anno>) -> <anno>V2</anno>
@@ -275,7 +275,7 @@
     </func>
 
     <func>
-      <name name="next" arity="1"/>
+      <name name="next" arity="1" since=""/>
       <fsummary>Traverse a tree with an iterator.</fsummary>
       <desc>
         <p>Returns <c>{<anno>Key</anno>, <anno>Value</anno>,
@@ -288,7 +288,7 @@
     </func>
 
     <func>
-      <name name="size" arity="1"/>
+      <name name="size" arity="1" since=""/>
       <fsummary>Return the number of nodes in a tree.</fsummary>
       <desc>
         <p>Returns the number of nodes in <c><anno>Tree</anno></c>.</p>
@@ -296,7 +296,7 @@
     </func>
 
     <func>
-      <name name="smallest" arity="1"/>
+      <name name="smallest" arity="1" since=""/>
       <fsummary>Return smallest key and value.</fsummary>
       <desc>
         <p>Returns <c>{<anno>Key</anno>, <anno>Value</anno>}</c>, where
@@ -308,7 +308,7 @@
     </func>
 
     <func>
-      <name name="take_largest" arity="1"/>
+      <name name="take_largest" arity="1" since=""/>
       <fsummary>Extract largest key and value.</fsummary>
       <desc>
         <p>Returns <c>{<anno>Key</anno>, <anno>Value</anno>,
@@ -321,7 +321,7 @@
     </func>
 
     <func>
-      <name name="take_smallest" arity="1"/>
+      <name name="take_smallest" arity="1" since=""/>
       <fsummary>Extract smallest key and value.</fsummary>
       <desc>
         <p>Returns <c>{<anno>Key</anno>, <anno>Value</anno>,
@@ -334,7 +334,7 @@
     </func>
 
     <func>
-      <name name="to_list" arity="1"/>
+      <name name="to_list" arity="1" since=""/>
       <fsummary>Convert a tree into a list.</fsummary>
       <desc>
         <p>Converts a tree into an ordered list of key-value tuples.</p>
@@ -342,7 +342,7 @@
     </func>
 
     <func>
-      <name name="update" arity="3"/>
+      <name name="update" arity="3" since=""/>
       <fsummary>Update a key to new value in a tree.</fsummary>
       <desc>
         <p>Updates <c><anno>Key</anno></c> to value <c><anno>Value</anno></c>
@@ -352,7 +352,7 @@
     </func>
 
     <func>
-      <name name="values" arity="1"/>
+      <name name="values" arity="1" since=""/>
       <fsummary>Return a list of the values in a tree.</fsummary>
       <desc>
         <p>Returns the values in <c><anno>Tree</anno></c> as an ordered list,
diff --git a/lib/stdlib/doc/src/gen_event.xml b/lib/stdlib/doc/src/gen_event.xml
index fc34e51216..2915c4f507 100644
--- a/lib/stdlib/doc/src/gen_event.xml
+++ b/lib/stdlib/doc/src/gen_event.xml
@@ -28,7 +28,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>gen_event</module>
+  <module since="">gen_event</module>
   <modulesummary>Generic event handling behavior.</modulesummary>
   <description>
     <p>This behavior module provides event handling functionality. It
@@ -130,7 +130,7 @@ gen_event:stop             ----->  Module:terminate/2
 
   <funcs>
     <func>
-      <name>add_handler(EventMgrRef, Handler, Args) -> Result</name>
+      <name since="">add_handler(EventMgrRef, Handler, Args) -> Result</name>
       <fsummary>Add an event handler to a generic event manager.</fsummary>
       <type>
         <v>EventMgrRef = Name | {Name,Node} | {global,GlobalName}
@@ -178,7 +178,7 @@ gen_event:stop             ----->  Module:terminate/2
     </func>
 
     <func>
-      <name>add_sup_handler(EventMgrRef, Handler, Args) -> Result</name>
+      <name since="">add_sup_handler(EventMgrRef, Handler, Args) -> Result</name>
       <fsummary>Add a supervised event handler to a generic event manager.
       </fsummary>
       <type>
@@ -241,8 +241,8 @@ gen_event:stop             ----->  Module:terminate/2
     </func>
 
     <func>
-      <name>call(EventMgrRef, Handler, Request) -> Result</name>
-      <name>call(EventMgrRef, Handler, Request, Timeout) -> Result</name>
+      <name since="">call(EventMgrRef, Handler, Request) -> Result</name>
+      <name since="">call(EventMgrRef, Handler, Request, Timeout) -> Result</name>
       <fsummary>Make a synchronous call to a generic event manager.</fsummary>
       <type>
         <v>EventMgrRef = Name | {Name,Node} | {global,GlobalName}
@@ -285,7 +285,7 @@ gen_event:stop             ----->  Module:terminate/2
     </func>
 
     <func> 
-      <name>delete_handler(EventMgrRef, Handler, Args) -> Result</name>
+      <name since="">delete_handler(EventMgrRef, Handler, Args) -> Result</name>
       <fsummary>Delete an event handler from a generic event manager.</fsummary>
       <type>
         <v>EventMgrRef = Name | {Name,Node} | {global,GlobalName}
@@ -318,8 +318,8 @@ gen_event:stop             ----->  Module:terminate/2
     </func>
 
     <func>
-      <name>notify(EventMgrRef, Event) -> ok</name>
-      <name>sync_notify(EventMgrRef, Event) -> ok</name>
+      <name since="">notify(EventMgrRef, Event) -> ok</name>
+      <name since="">sync_notify(EventMgrRef, Event) -> ok</name>
       <fsummary>Notify an event manager about an event.</fsummary>
       <type>
         <v>EventMgrRef = Name | {Name,Node} | {global,GlobalName}
@@ -349,9 +349,9 @@ gen_event:stop             ----->  Module:terminate/2
     </func>
 
     <func>
-      <name>start() -> Result</name>
-      <name>start(EventMgrName | Options) -> Result</name>
-      <name>start(EventMgrName, Options) -> Result</name>
+      <name since="">start() -> Result</name>
+      <name since="">start(EventMgrName | Options) -> Result</name>
+      <name since="OTP 20.0">start(EventMgrName, Options) -> Result</name>
       <fsummary>Create a stand-alone event manager process.</fsummary>
       <type>
         <v>EventMgrName = {local,Name} | {global,GlobalName} | {via,Module,ViaName}</v>
@@ -375,9 +375,9 @@ gen_event:stop             ----->  Module:terminate/2
     </func>
 
     <func>
-      <name>start_link() -> Result</name>
-      <name>start_link(EventMgrName | Options) -> Result</name>
-      <name>start_link(EventMgrName, Options) -> Result</name>
+      <name since="">start_link() -> Result</name>
+      <name since="">start_link(EventMgrName | Options) -> Result</name>
+      <name since="OTP 20.0">start_link(EventMgrName, Options) -> Result</name>
       <fsummary>Create a generic event manager process in a supervision tree.
       </fsummary>
       <type>
@@ -436,8 +436,8 @@ gen_event:stop             ----->  Module:terminate/2
     </func>
 
     <func>
-      <name>stop(EventMgrRef) -> ok</name>
-      <name>stop(EventMgrRef, Reason, Timeout) -> ok</name>
+      <name since="">stop(EventMgrRef) -> ok</name>
+      <name since="OTP 18.0">stop(EventMgrRef, Reason, Timeout) -> ok</name>
       <fsummary>Terminate a generic event manager.</fsummary>
       <type>
         <v>EventMgrRef = Name | {Name,Node} | {global,GlobalName}
@@ -474,7 +474,7 @@ gen_event:stop             ----->  Module:terminate/2
     </func>
 
     <func>
-      <name>swap_handler(EventMgrRef, {Handler1,Args1}, {Handler2,Args2}) -> Result</name>
+      <name since="">swap_handler(EventMgrRef, {Handler1,Args1}, {Handler2,Args2}) -> Result</name>
       <fsummary>Replace an event handler in a generic event manager.</fsummary>
       <type>
         <v>EventMgrRef = Name | {Name,Node} | {global,GlobalName}
@@ -521,7 +521,7 @@ gen_event:stop             ----->  Module:terminate/2
     </func>
 
     <func>
-      <name>swap_sup_handler(EventMgrRef, {Handler1,Args1}, {Handler2,Args2}) -> Result</name>
+      <name since="">swap_sup_handler(EventMgrRef, {Handler1,Args1}, {Handler2,Args2}) -> Result</name>
       <fsummary>Replace an event handler in a generic event manager.</fsummary>
       <type>
         <v>EventMgrRef = Name | {Name,Node} | {global,GlobalName}
@@ -546,7 +546,7 @@ gen_event:stop             ----->  Module:terminate/2
     </func>
 
     <func>
-      <name>which_handlers(EventMgrRef) -> [Handler]</name>
+      <name since="">which_handlers(EventMgrRef) -> [Handler]</name>
       <fsummary>Return all event handlers installed in a generic event manager.
       </fsummary>
       <type>
@@ -575,7 +575,7 @@ gen_event:stop             ----->  Module:terminate/2
 
   <funcs>
     <func>
-      <name>Module:code_change(OldVsn, State, Extra) -> {ok, NewState}</name>
+      <name since="">Module:code_change(OldVsn, State, Extra) -> {ok, NewState}</name>
       <fsummary>Update the internal state during upgrade/downgrade.</fsummary>
       <type>
         <v>OldVsn = Vsn | {down, Vsn}</v>
@@ -611,7 +611,7 @@ gen_event:stop             ----->  Module:terminate/2
     </func>
 
     <func>
-      <name>Module:format_status(Opt, [PDict, State]) -> Status</name>
+      <name since="OTP R14B">Module:format_status(Opt, [PDict, State]) -> Status</name>
       <fsummary>Optional function for providing a term describing the
         current event handler state.</fsummary>
       <type>
@@ -667,7 +667,7 @@ gen_event:stop             ----->  Module:terminate/2
     </func>
 
     <func>
-      <name>Module:handle_call(Request, State) -> Result</name>
+      <name since="">Module:handle_call(Request, State) -> Result</name>
       <fsummary>Handle a synchronous request.</fsummary>
       <type>
         <v>Request = term()</v>
@@ -698,7 +698,7 @@ gen_event:stop             ----->  Module:terminate/2
     </func>
 
     <func>
-      <name>Module:handle_event(Event, State) -> Result</name>
+      <name since="">Module:handle_event(Event, State) -> Result</name>
       <fsummary>Handle an event.</fsummary>
       <type>
         <v>Event = term()</v>
@@ -756,7 +756,7 @@ gen_event:stop             ----->  Module:terminate/2
     </func>
 
     <func>
-      <name>Module:handle_info(Info, State) -> Result</name>
+      <name since="">Module:handle_info(Info, State) -> Result</name>
       <fsummary>Handle an incoming message.</fsummary>
       <type>
         <v>Info = term()</v>
@@ -788,7 +788,7 @@ gen_event:stop             ----->  Module:terminate/2
     </func>
 
     <func>
-      <name>Module:init(InitArgs) -> {ok,State} | {ok,State,hibernate} | {error,Reason}</name>
+      <name since="">Module:init(InitArgs) -> {ok,State} | {ok,State,hibernate} | {error,Reason}</name>
       <fsummary>Initialize an event handler.</fsummary>
       <type>
         <v>InitArgs = Args | {Args,Term}</v>
@@ -825,7 +825,7 @@ gen_event:stop             ----->  Module:terminate/2
     </func>
 
     <func>
-      <name>Module:terminate(Arg, State) -> term()</name>
+      <name since="">Module:terminate(Arg, State) -> term()</name>
       <fsummary>Clean up before deletion.</fsummary>
       <type>
         <v>Arg = Args | {stop,Reason} | stop | remove_handler</v>
diff --git a/lib/stdlib/doc/src/gen_server.xml b/lib/stdlib/doc/src/gen_server.xml
index 106bda85f5..a4554d7657 100644
--- a/lib/stdlib/doc/src/gen_server.xml
+++ b/lib/stdlib/doc/src/gen_server.xml
@@ -28,7 +28,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>gen_server</module>
+  <module since="">gen_server</module>
   <modulesummary>Generic server behavior.</modulesummary>
   <description>
     <p>This behavior module provides the server of a client-server
@@ -101,8 +101,8 @@ gen_server:abcast     -----> Module:handle_cast/2
 
   <funcs>
     <func>
-      <name>abcast(Name, Request) -> abcast</name>
-      <name>abcast(Nodes, Name, Request) -> abcast</name>
+      <name since="">abcast(Name, Request) -> abcast</name>
+      <name since="">abcast(Nodes, Name, Request) -> abcast</name>
       <fsummary>Send an asynchronous request to many generic servers.</fsummary>
       <type>
         <v>Nodes = [Node]</v>
@@ -124,8 +124,8 @@ gen_server:abcast     -----> Module:handle_cast/2
     </func>
 
     <func>
-      <name>call(ServerRef, Request) -> Reply</name>
-      <name>call(ServerRef, Request, Timeout) -> Reply</name>
+      <name since="">call(ServerRef, Request) -> Reply</name>
+      <name since="">call(ServerRef, Request, Timeout) -> Reply</name>
       <fsummary>Make a synchronous call to a generic server.</fsummary>
       <type>
         <v>ServerRef = Name | {Name,Node} | {global,GlobalName}</v>
@@ -175,7 +175,7 @@ gen_server:abcast     -----> Module:handle_cast/2
     </func>
 
     <func>
-      <name>cast(ServerRef, Request) -> ok</name>
+      <name since="">cast(ServerRef, Request) -> ok</name>
       <fsummary>Send an asynchronous request to a generic server.</fsummary>
       <type>
         <v>ServerRef = Name | {Name,Node} | {global,GlobalName}</v>
@@ -200,10 +200,10 @@ gen_server:abcast     -----> Module:handle_cast/2
     </func>
 
     <func>
-      <name>enter_loop(Module, Options, State)</name>
-      <name>enter_loop(Module, Options, State, ServerName)</name>
-      <name>enter_loop(Module, Options, State, Timeout)</name>
-      <name>enter_loop(Module, Options, State, ServerName, Timeout)</name>
+      <name since="">enter_loop(Module, Options, State)</name>
+      <name since="">enter_loop(Module, Options, State, ServerName)</name>
+      <name since="">enter_loop(Module, Options, State, Timeout)</name>
+      <name since="">enter_loop(Module, Options, State, ServerName, Timeout)</name>
       <fsummary>Enter the <c>gen_server</c> receive loop.</fsummary>
       <type>
         <v>Module = atom()</v>
@@ -248,9 +248,9 @@ gen_server:abcast     -----> Module:handle_cast/2
     </func>
 
     <func>
-      <name>multi_call(Name, Request) -> Result</name>
-      <name>multi_call(Nodes, Name, Request) -> Result</name>
-      <name>multi_call(Nodes, Name, Request, Timeout) -> Result</name>
+      <name since="">multi_call(Name, Request) -> Result</name>
+      <name since="">multi_call(Nodes, Name, Request) -> Result</name>
+      <name since="">multi_call(Nodes, Name, Request, Timeout) -> Result</name>
       <fsummary>Make a synchronous call to many generic servers.</fsummary>
       <type>
         <v>Nodes = [Node]</v>
@@ -307,7 +307,7 @@ gen_server:abcast     -----> Module:handle_cast/2
     </func>
 
     <func>
-      <name>reply(Client, Reply) -> Result</name>
+      <name since="">reply(Client, Reply) -> Result</name>
       <fsummary>Send a reply to a client.</fsummary>
       <type>
         <v>Client - see below</v>
@@ -332,8 +332,8 @@ gen_server:abcast     -----> Module:handle_cast/2
     </func>
 
     <func>
-      <name>start(Module, Args, Options) -> Result</name>
-      <name>start(ServerName, Module, Args, Options) -> Result</name>
+      <name since="">start(Module, Args, Options) -> Result</name>
+      <name since="">start(ServerName, Module, Args, Options) -> Result</name>
       <fsummary>Create a standalone <c>gen_server</c> process.</fsummary>
       <type>
         <v>ServerName = {local,Name} | {global,GlobalName}</v>
@@ -361,8 +361,8 @@ gen_server:abcast     -----> Module:handle_cast/2
     </func>
 
     <func>
-      <name>start_link(Module, Args, Options) -> Result</name>
-      <name>start_link(ServerName, Module, Args, Options) -> Result</name>
+      <name since="">start_link(Module, Args, Options) -> Result</name>
+      <name since="">start_link(ServerName, Module, Args, Options) -> Result</name>
       <fsummary>Create a <c>gen_server</c> process in a supervision tree.
       </fsummary>
       <type>
@@ -466,8 +466,8 @@ gen_server:abcast     -----> Module:handle_cast/2
     </func>
 
     <func>
-      <name>stop(ServerRef) -> ok</name>
-      <name>stop(ServerRef, Reason, Timeout) -> ok</name>
+      <name since="OTP 18.0">stop(ServerRef) -> ok</name>
+      <name since="OTP 18.0">stop(ServerRef, Reason, Timeout) -> ok</name>
       <fsummary>Synchronously stop a generic server.</fsummary>
       <type>
         <v>ServerRef = Name | {Name,Node} | {global,GlobalName}</v>
@@ -508,7 +508,7 @@ gen_server:abcast     -----> Module:handle_cast/2
 
   <funcs>
     <func>
-      <name>Module:code_change(OldVsn, State, Extra) -> {ok, NewState} | {error, Reason}</name>
+      <name since="">Module:code_change(OldVsn, State, Extra) -> {ok, NewState} | {error, Reason}</name>
       <fsummary>Update the internal state during upgrade/downgrade.</fsummary>
       <type>
         <v>OldVsn = Vsn | {down, Vsn}</v>
@@ -550,7 +550,7 @@ gen_server:abcast     -----> Module:handle_cast/2
     </func>
 
     <func>
-      <name>Module:format_status(Opt, [PDict, State]) -> Status</name>
+      <name since="OTP R13B04">Module:format_status(Opt, [PDict, State]) -> Status</name>
       <fsummary>Optional function for providing a term describing the
         current <c>gen_server</c> status.</fsummary>
       <type>
@@ -610,7 +610,7 @@ gen_server:abcast     -----> Module:handle_cast/2
     </func>
 
     <func>
-      <name>Module:handle_call(Request, From, State) -> Result</name>
+      <name since="">Module:handle_call(Request, From, State) -> Result</name>
       <fsummary>Handle a synchronous request.</fsummary>
       <type>
         <v>Request = term()</v>
@@ -677,7 +677,7 @@ gen_server:abcast     -----> Module:handle_cast/2
     </func>
 
     <func>
-      <name>Module:handle_cast(Request, State) -> Result</name>
+      <name since="">Module:handle_cast(Request, State) -> Result</name>
       <fsummary>Handle an asynchronous request.</fsummary>
       <type>
         <v>Request = term()</v>
@@ -703,7 +703,7 @@ gen_server:abcast     -----> Module:handle_cast/2
     </func>
 
     <func>
-      <name>Module:handle_continue(Continue, State) -> Result</name>
+      <name since="OTP 21.0">Module:handle_continue(Continue, State) -> Result</name>
       <fsummary>Handle a continue instruction.</fsummary>
       <type>
         <v>Continue = term()</v>
@@ -738,7 +738,7 @@ gen_server:abcast     -----> Module:handle_cast/2
     </func>
 
     <func>
-      <name>Module:handle_info(Info, State) -> Result</name>
+      <name since="">Module:handle_info(Info, State) -> Result</name>
       <fsummary>Handle an incoming message.</fsummary>
       <type>
         <v>Info = timeout | term()</v>
@@ -770,7 +770,7 @@ gen_server:abcast     -----> Module:handle_cast/2
     </func>
 
     <func>
-      <name>Module:init(Args) -> Result</name>
+      <name since="">Module:init(Args) -> Result</name>
       <fsummary>Initialize process and internal state.</fsummary>
       <type>
         <v>Args = term()</v>
@@ -811,7 +811,7 @@ gen_server:abcast     -----> Module:handle_cast/2
     </func>
 
     <func>
-      <name>Module:terminate(Reason, State)</name>
+      <name since="">Module:terminate(Reason, State)</name>
       <fsummary>Clean up before termination.</fsummary>
       <type>
         <v>Reason = normal | shutdown | {shutdown,term()} | term()</v>
diff --git a/lib/stdlib/doc/src/gen_statem.xml b/lib/stdlib/doc/src/gen_statem.xml
index a808d3af55..6f6849a19d 100644
--- a/lib/stdlib/doc/src/gen_statem.xml
+++ b/lib/stdlib/doc/src/gen_statem.xml
@@ -4,7 +4,7 @@
 <erlref>
   <header>
     <copyright>
-      <year>2016</year><year>2018</year>
+      <year>2016</year><year>2019</year>
       <holder>Ericsson AB. All Rights Reserved.</holder>
     </copyright>
     <legalnotice>
@@ -28,7 +28,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>gen_statem</module>
+  <module since="OTP 19.0">gen_statem</module>
   <modulesummary>Generic state machine behavior.</modulesummary>
   <description>
     <p>
@@ -167,7 +167,7 @@ erlang:'!'            -----> Module:StateName/3
     </p>
     <marker id="state callback"/>
     <p>
-      The "<em>state callback</em>" for a specific
+      The <em>state callback</em> for a specific
       <seealso marker="#type-state">state</seealso>
       in a <c>gen_statem</c> is the callback function that is called
       for all events in this state. It is selected depending on which
@@ -179,7 +179,7 @@ erlang:'!'            -----> Module:StateName/3
       When the
       <seealso marker="#type-callback_mode"><em>callback mode</em></seealso>
       is <c>state_functions</c>, the state must be an atom and
-      is used as the state callback name; see
+      is used as the <em>state callback</em> name; see
       <seealso marker="#Module:StateName/3"><c>Module:StateName/3</c></seealso>.
       This co-locates all code for a specific state
       in one function as the <c>gen_statem</c> engine
@@ -192,7 +192,7 @@ erlang:'!'            -----> Module:StateName/3
       When the
       <seealso marker="#type-callback_mode"><em>callback mode</em></seealso>
       is <c>handle_event_function</c>, the state can be any term
-      and the state callback name is
+      and the <em>state callback</em> name is
       <seealso marker="#Module:handle_event/4"><c>Module:handle_event/4</c></seealso>.
       This makes it easy to branch depending on state or event as you desire.
       Be careful about which events you handle in which
@@ -200,12 +200,36 @@ erlang:'!'            -----> Module:StateName/3
       forever creating an infinite busy loop.
     </p>
     <p>
-      The <c>gen_statem</c> enqueues incoming events in order of arrival
-      and presents these to the
-      <seealso marker="#state callback">state callback</seealso>
-      in that order. The state callback can postpone an event
-      so it is not retried in the current state.
-      After a state change the queue restarts with the postponed events.
+      When <c>gen_statem</c> receives a process message it is
+      converted into an event and the
+      <seealso marker="#state callback"><em>state callback</em></seealso>
+      is called with the event as two arguments: type and content.
+      When the
+      <seealso marker="#state callback"><em>state callback</em></seealso>
+      has processed the event it returns to <c>gen_statem</c>
+      which does a <em>state transition</em>.
+      If this <em>state transition</em> is to a different state,
+      that is: <c>NextState =/= State</c>, it is a <em>state change</em>.
+    </p>
+    <p>
+      The
+      <seealso marker="#state callback"><em>state callback</em></seealso>
+      may return
+      <seealso marker="#type-action"><em>transition actions</em></seealso>
+      for <c>gen_statem</c>
+      to execute during the <em>state transition</em>,
+      for example to reply to a
+      <seealso marker="#call/2"><c>gen_statem:call/2,3</c></seealso>.
+    </p>
+    <p>
+      One of the possible <em>transition actions</em>
+      is to postpone the current event.
+      Then it is not retried in the current state.
+      The <c>gen_statem</c> engine keeps a queue of events
+      divided into the postponed events
+      and the events still to process.
+      After a <em>state change</em> the queue restarts
+      with the postponed events.
     </p>
     <p>
       The <c>gen_statem</c> event queue model is sufficient
@@ -215,13 +239,17 @@ erlang:'!'            -----> Module:StateName/3
       to entering a new receive statement.
     </p>
     <p>
-      The <seealso marker="#state callback">state callback</seealso>
+      The
+      <seealso marker="#state callback"><em>state callback</em></seealso>
       can insert events using the
-      <seealso marker="#type-action"><c>action()</c></seealso>
+      <seealso marker="#type-action"><em>transition actions</em></seealso>
       <c>next_event</c>
-      and such an event is inserted as the next to present
-      to the state callback. That is, as if it is
-      the oldest incoming event. A dedicated
+      and such an event is inserted in the event queue
+      as the next to call the
+      <seealso marker="#state callback"><em>state callback</em></seealso>
+      with.
+      That is, as if it is the oldest incoming event.
+      A dedicated
       <seealso marker="#type-event_type"><c>event_type()</c></seealso>
       <c>internal</c> can be used for such events making them impossible
       to mistake for external events.
@@ -236,24 +264,26 @@ erlang:'!'            -----> Module:StateName/3
     <p>
       The <c>gen_statem</c> engine can automatically
       make a specialized call to the
-      <seealso marker="#state callback">state callback</seealso>
+      <seealso marker="#state callback"><em>state callback</em></seealso>
       whenever a new state is entered; see 
       <seealso marker="#type-state_enter"><c>state_enter()</c></seealso>.
       This is for writing code common to all state entries.
-      Another way to do it is to insert an event at the state transition,
-      and/or to use a dedicated state transition function,
+      Another way to do it is to explicitly insert an event
+      at the <em>state transition</em>,
+      and/or to use a dedicated <em>state transition</em> function,
       but that is something you will have to remember
-      at every state transition to the state(s) that need it.
+      at every <em>state transition</em> to the state(s) that need it.
     </p>
     <note>
       <p>If you in <c>gen_statem</c>, for example, postpone
-        an event in one state and then call another state callback
-        of yours, you have not changed states and hence the postponed event
-        is not retried, which is logical but can be confusing.
+        an event in one state and then call another <em>state callback</em>
+        of yours, you have not done a <em>state change</em>
+	and hence the postponed event is not retried,
+	which is logical but can be confusing.
       </p>
     </note>
     <p>
-      For the details of a state transition, see type
+      For the details of a <em>state transition</em>, see type
       <seealso marker="#type-transition_option"><c>transition_option()</c></seealso>.
     </p>
     <p>
@@ -276,7 +306,8 @@ erlang:'!'            -----> Module:StateName/3
       The <c>gen_statem</c> process can go into hibernation; see
       <seealso marker="proc_lib#hibernate/3"><c>proc_lib:hibernate/3</c></seealso>.
       It is done when a
-      <seealso marker="#state callback">state callback</seealso> or
+      <seealso marker="#state callback"><em>state callback</em></seealso>
+      or
       <seealso marker="#Module:init/1"><c>Module:init/1</c></seealso>
       specifies <c>hibernate</c> in the returned
       <seealso marker="#type-action"><c>Actions</c></seealso>
@@ -289,12 +320,13 @@ erlang:'!'            -----> Module:StateName/3
     </p>
     <p>
       There is also a server start option
-      <seealso marker="#type-hibernate_after_opt">
+      <seealso marker="#type-enter_loop_opt">
 	<c>{hibernate_after, Timeout}</c>
       </seealso>
       for
-      <seealso marker="#start/3"><c>start/3,4</c></seealso> or
-      <seealso marker="#start_link/3"><c>start_link/3,4</c></seealso>
+      <seealso marker="#start/3"><c>start/3,4</c></seealso>,
+      <seealso marker="#start_link/3"><c>start_link/3,4</c></seealso> or
+      <seealso marker="#enter_loop/4"><c>enter_loop/4,5,6</c></seealso>,
       that may be used to automatically hibernate the server.
     </p>
   </description>
@@ -483,36 +515,6 @@ handle_event(_, _, State, Data) ->
       </desc>
     </datatype>
     <datatype>
-      <name name="debug_opt"/>
-      <desc>
-	<p>
-	  Debug option that can be used when starting
-	  a <c>gen_statem</c> server through,
-	  <seealso marker="#enter_loop/4"><c>enter_loop/4-6</c></seealso>.
-	</p>
-	<p>
-	  For every entry in <c><anno>Dbgs</anno></c>,
-	  the corresponding function in
-	  <seealso marker="sys"><c>sys</c></seealso> is called.
-	</p>
-      </desc>
-    </datatype>
-    <datatype>
-      <name name="hibernate_after_opt"/>
-      <desc>
-	<p>
-          hibernate_after option that can be used when starting
-	  a <c>gen_statem</c> server through,
-	  <seealso marker="#enter_loop/4"><c>enter_loop/4-6</c></seealso>.
-	</p>
-    <p>If option<seealso marker="#type-hibernate_after_opt"><c>{hibernate_after,HibernateAfterTimeout}</c></seealso> is present, the <c>gen_statem</c>
-        process awaits any message for <c>HibernateAfterTimeout</c> milliseconds and
-        if no message is received, the process goes into hibernation automatically
-        (by calling <seealso marker="proc_lib#hibernate/3"><c>proc_lib:hibernate/3</c></seealso>).
-    </p>
-      </desc>
-    </datatype>
-    <datatype>
       <name name="start_opt"/>
       <desc>
 	<p>
@@ -532,6 +534,37 @@ handle_event(_, _, State, Data) ->
       </desc>
     </datatype>
     <datatype>
+      <name name="enter_loop_opt"/>
+      <desc>
+	<p>
+	  Options that can be used when starting
+	  a <c>gen_statem</c> server through,
+	  <seealso marker="#enter_loop/4"><c>enter_loop/4-6</c></seealso>.
+	</p>
+	<taglist>
+	  <tag><c>hibernate_after</c></tag>
+	  <item>
+	    <p>
+	      <c>HibernateAfterTimeout</c>
+	      specifies that the <c>gen_statem</c> process awaits
+	      any message for <c>HibernateAfterTimeout</c> milliseconds and
+              if no message is received, the process goes into hibernation
+	      automatically (by calling
+	      <seealso marker="proc_lib#hibernate/3"><c>proc_lib:hibernate/3</c></seealso>).
+	    </p>
+	  </item>
+	  <tag><c>debug</c></tag>
+	  <item>
+	    <p>
+	      For every entry in <c><anno>Dbgs</anno></c>,
+	      the corresponding function in
+	      <seealso marker="sys"><c>sys</c></seealso> is called.
+	    </p>
+	  </item>
+	</taglist>
+      </desc>
+    </datatype>
+    <datatype>
       <name name="from"/>
       <desc>
 	<p>
@@ -551,7 +584,7 @@ handle_event(_, _, State, Data) ->
 	  <seealso marker="#type-callback_mode"><em>callback mode</em></seealso>
 	  is <c>handle_event_function</c>,
 	  the state can be any term.
-	  After a state change (<c>NextState =/= State</c>),
+	  After a <em>state change</em> (<c>NextState =/= State</c>),
 	  all postponed events are retried.
 	</p>
       </desc>
@@ -564,7 +597,7 @@ handle_event(_, _, State, Data) ->
 	  <seealso marker="#type-callback_mode"><em>callback mode</em></seealso>
 	  is <c>state_functions</c>,
 	  the state must be of this type.
-	  After a state change (<c>NextState =/= State</c>),
+	  After a <em>state change</em> (<c>NextState =/= State</c>),
 	  all postponed events are retried.
 	</p>
       </desc>
@@ -595,7 +628,7 @@ handle_event(_, _, State, Data) ->
 	</p>
 	<p>
 	  <c>internal</c> events can only be generated by the
-	  state machine itself through the state transition action
+	  state machine itself through the <em>transition action</em>
 	  <seealso marker="#type-action"><c>next_event</c></seealso>.
 	</p>
       </desc>
@@ -633,9 +666,9 @@ handle_event(_, _, State, Data) ->
 	  This is the return type from
 	  <seealso marker="#Module:callback_mode/0"><c>Module:callback_mode/0</c></seealso>
 	  and selects 
-	  <seealso marker="#type-callback_mode">callback mode</seealso>
+	  <seealso marker="#type-callback_mode"><em>callback mode</em></seealso>
 	  and whether to do
-	  <seealso marker="#type-state_enter">state enter calls</seealso>,
+	  <seealso marker="#type-state_enter"><em>state enter calls</em></seealso>,
 	  or not.
 	</p>
       </desc>
@@ -684,13 +717,15 @@ handle_event(_, _, State, Data) ->
 	  If 
 	  <seealso marker="#Module:callback_mode/0"><c>Module:callback_mode/0</c></seealso>
 	  returns a list containing <c>state_enter</c>,
-	  the <c>gen_statem</c> engine will, at every state change,
+	  the <c>gen_statem</c> engine will, at every <em>state change</em>,
 	  call the
 	  <seealso marker="#state callback">state callback</seealso>
 	  with arguments <c>(enter, OldState, Data)</c>.
 	  This may look like an event but is really a call
-	  performed after the previous state callback returned
-	  and before any event is delivered to the new state callback.
+	  performed after the previous
+	  <seealso marker="#state callback"><em>state callback</em></seealso>
+	  returned and before any event is delivered to the new
+	  <seealso marker="#state callback"><em>state callback</em></seealso>.
 	  See
 	  <seealso marker="#Module:StateName/3"><c>Module:StateName/3</c></seealso>
 	  and
@@ -703,27 +738,27 @@ handle_event(_, _, State, Data) ->
 	  <seealso marker="#type-state_callback_result">
 	    <c>repeat_state_and_data</c>
 	  </seealso>
-	  tuple from the state callback.
+	  tuple from the <em>state callback</em>.
 	</p>
 	<p>
 	  If 
 	  <seealso marker="#Module:callback_mode/0"><c>Module:callback_mode/0</c></seealso>
-	  does not return such a list, no state enter calls are done.
+	  does not return such a list, no <em>state enter calls</em> are done.
 	</p>
 	<p>
 	  If 
 	  <seealso marker="#Module:code_change/4"><c>Module:code_change/4</c></seealso>
 	  should transform the state,
-	  it is regarded as a state rename and not a state change,
-	  which will not cause a state enter call.
+	  it is regarded as a state rename and not a <em>state change</em>,
+	  which will not cause a <em>state enter call</em>.
 	</p>
 	<p>
-	  Note that a state enter call <em>will</em> be done
+	  Note that a <em>state enter call</em> <em>will</em> be done
 	  right before entering the initial state even though this
-	  formally is not a state change.
-	  In this case <c>OldState</c> will be the same as <c>State</c>,
-	  which can not happen for a subsequent state change,
-	  but will happen when repeating the state enter call.
+	  actually is not a <em>state change</em>.
+	  In this case <c>OldState =:= State</c>,
+	  which cannot happen for a subsequent state change,
+	  but will happen when repeating the <em>state enter call</em>.
 	</p>
       </desc>
     </datatype>
@@ -733,8 +768,11 @@ handle_event(_, _, State, Data) ->
 	<p>
 	  Transition options can be set by
 	  <seealso marker="#type-action">actions</seealso>
-	  and modify the state transition.
-	  Here are the sequence of steps for a state transition:
+	  and modify the <em>state transition</em>.
+	  The <em>state transition</em> takes place when the
+	  <seealso marker="#state callback"><em>state callback</em></seealso>
+	  has processed an event and returns.
+	  Here are the sequence of steps for a <em>state transition</em>:
 	</p>
 	<list type="ordered">
 	  <item>
@@ -765,7 +803,7 @@ handle_event(_, _, State, Data) ->
 	      returned by the state callback that caused the state entry.
 	    </p>
 	    <p>
-	      Should this state enter call return any of
+	      Should this <em>state enter call</em> return any of
 	      the mentioned <c>repeat_*</c> callback results
 	      it is repeated again, with the updated <c>Data</c>.
             </p>
@@ -787,7 +825,8 @@ handle_event(_, _, State, Data) ->
 	  </item>
 	  <item>
 	    <p>
-	      If the state changes, the queue of incoming events
+	      If this is a <em>state change</em>,
+	      the queue of incoming events
               is reset to start with the oldest postponed.
 	    </p>
 	  </item>
@@ -821,7 +860,7 @@ handle_event(_, _, State, Data) ->
 	      if the event queue is empty.
 	    </p>
 	    <p>
-	      A state change cancels a
+	      A <em>state change</em> cancels a
               <seealso marker="#type-state_timeout"><c>state_timeout()</c></seealso>
 	      and any new transition option of this type
 	      belongs to the new state.
@@ -830,7 +869,7 @@ handle_event(_, _, State, Data) ->
 	  <item>
 	    <p>
 	      If there are enqueued events the
-	      <seealso marker="#state callback">state callback</seealso>
+	      <seealso marker="#state callback"><em>state callback</em></seealso>
 	      for the possibly new state
 	      is called with the oldest enqueued event,
 	      and we start again from the top of this list.
@@ -848,7 +887,7 @@ handle_event(_, _, State, Data) ->
 	      the next incoming message awakens the <c>gen_statem</c>,
 	      but if it is a system event it goes right back into hibernation.
 	      When a new message arrives the 
-	      <seealso marker="#state callback">state callback</seealso>
+	      <seealso marker="#state callback"><em>state callback</em></seealso>
 	      is called with the corresponding event,
 	      and we start again from the top of this sequence.
 	    </p>
@@ -861,7 +900,7 @@ handle_event(_, _, State, Data) ->
       <desc>
 	<p>
 	  If <c>true</c>, postpones the current event and retries
-	  it when the state changes
+	  it after a <em>state change</em>
 	  (<c>NextState =/= State</c>).
 	</p>
       </desc>
@@ -1021,9 +1060,9 @@ handle_event(_, _, State, Data) ->
       <name name="action"/>
       <desc>
 	<p>
-	  These state transition actions can be invoked by
+	  These <em>transition actions</em> can be invoked by
 	  returning them from the
-	  <seealso marker="#state callback">state callback</seealso>
+	  <seealso marker="#state callback"><em>state callback</em></seealso>
 	  when it is called with an
 	  <seealso marker="#type-event_type">event</seealso>,
 	  from
@@ -1054,7 +1093,7 @@ handle_event(_, _, State, Data) ->
 		<c>transition_option()</c>
 	      </seealso>
 	      <seealso marker="#type-postpone"><c>postpone()</c></seealso>
-	      for this state transition.
+	      for this <em>state transition</em>.
 	      This action is ignored when returned from
 	      <seealso marker="#Module:init/1"><c>Module:init/1</c></seealso>
 	      or given to
@@ -1093,9 +1132,9 @@ handle_event(_, _, State, Data) ->
       <name name="enter_action"/>
       <desc>
 	<p>
-	  These state transition actions can be invoked by
+	  These <em>transition actions</em> can be invoked by
 	  returning them from the
-	  <seealso marker="#state callback">state callback</seealso>, from
+	  <seealso marker="#state callback"><em>state callback</em></seealso>, from
 	  <seealso marker="#Module:init/1"><c>Module:init/1</c></seealso>
 	  or by giving them to
 	  <seealso marker="#enter_loop/5"><c>enter_loop/5,6</c></seealso>.
@@ -1119,7 +1158,7 @@ handle_event(_, _, State, Data) ->
 	      Sets the
 	      <seealso marker="#type-transition_option"><c>transition_option()</c></seealso>
 	      <seealso marker="#type-hibernate"><c>hibernate()</c></seealso>
-	      for this state transition.
+	      for this <em>state transition</em>.
 	    </p>
 	  </item>
 	</taglist>
@@ -1129,9 +1168,9 @@ handle_event(_, _, State, Data) ->
       <name name="timeout_action"/>
       <desc>
 	<p>
-	  These state transition actions can be invoked by
+	  These <em>transition actions</em> can be invoked by
 	  returning them from the
-	  <seealso marker="#state callback">state callback</seealso>, from
+	  <seealso marker="#state callback"><em>state callback</em></seealso>, from
 	  <seealso marker="#Module:init/1"><c>Module:init/1</c></seealso>
 	  or by giving them to
 	  <seealso marker="#enter_loop/5"><c>enter_loop/5,6</c></seealso>.
@@ -1147,7 +1186,7 @@ handle_event(_, _, State, Data) ->
 	      Short for <c>{timeout,Time,Time}</c>, that is,
 	      the time-out message is the time-out time.
 	      This form exists to make the
-	      <seealso marker="#state callback">state callback</seealso>
+	      <seealso marker="#state callback"><em>state callback</em></seealso>
 	      return value <c>{next_state,NextState,NewData,Time}</c>
 	      allowed like for <c>gen_fsm</c>.
 	    </p>
@@ -1193,9 +1232,9 @@ handle_event(_, _, State, Data) ->
       <name name="reply_action"/>
       <desc>
 	<p>
-	  This state transition action can be invoked by
+	  This <em>transition action</em> can be invoked by
 	  returning it from the
-	  <seealso marker="#state callback">state callback</seealso>, from
+	  <seealso marker="#state callback"><em>state callback</em></seealso>, from
 	  <seealso marker="#Module:init/1"><c>Module:init/1</c></seealso>
 	  or by giving it to
 	  <seealso marker="#enter_loop/5"><c>enter_loop/5,6</c></seealso>.
@@ -1210,7 +1249,7 @@ handle_event(_, _, State, Data) ->
 	  <c><anno>From</anno></c> must be the term from argument
 	  <seealso marker="#type-event_type"><c>{call,<anno>From</anno>}</c></seealso>
 	  in a call to a
-	  <seealso marker="#state callback">state callback</seealso>.
+	  <seealso marker="#state callback"><em>state callback</em></seealso>.
 	</p>
 	<p>
 	  Note that using this action from 
@@ -1219,7 +1258,7 @@ handle_event(_, _, State, Data) ->
 	  <seealso marker="#enter_loop/5"><c>enter_loop/5,6</c></seealso>
 	  would be weird on the border of witchcraft
 	  since there has been no earlier call to a
-	  <seealso marker="#state callback">state callback</seealso>
+	  <seealso marker="#state callback"><em>state callback</em></seealso>
 	  in this server.
 	</p>
       </desc>
@@ -1239,7 +1278,7 @@ handle_event(_, _, State, Data) ->
 	  The <seealso marker="#type-action"><c>Actions</c></seealso>
 	  are executed when entering the first
 	  <seealso marker="#type-state">state</seealso> just as for a
-	  <seealso marker="#state callback">state callback</seealso>,
+	  <seealso marker="#state callback"><em>state callback</em></seealso>,
 	  except that the action <c>postpone</c> is forced to
 	  <c>false</c> since there is no event to postpone.
 	</p>
@@ -1256,7 +1295,7 @@ handle_event(_, _, State, Data) ->
       <desc>
 	<p>
 	  <c><anno>State</anno></c> is the current state
-	  and it can not be changed since the state callback
+	  and it cannot be changed since the state callback
 	  was called with a
 	  <seealso marker="#type-state_enter"><em>state enter call</em></seealso>.
 	</p>
@@ -1292,11 +1331,13 @@ handle_event(_, _, State, Data) ->
 	  <tag><c>next_state</c></tag>
 	  <item>
 	    <p>
-	      The <c>gen_statem</c> does a state transition to
+	      The <c>gen_statem</c> does a <em>state transition</em> to
 	      <c><anno>NextState</anno></c>
 	      (which can be the same as the current state),
 	      sets <c><anno>NewData</anno></c>,
 	      and executes all <c><anno>Actions</anno></c>.
+	      If <c><anno>NextState</anno> =/= CurrentState</c>
+	      the <em>state transition</em> is a <em>state change</em>.
 	    </p>
 	  </item>
 	</taglist>
@@ -1318,54 +1359,33 @@ handle_event(_, _, State, Data) ->
 	  <tag><c>keep_state</c></tag>
 	  <item>
 	    <p>
-	      The <c>gen_statem</c> keeps the current state, or
-	      does a state transition to the current state if you like,
-	      sets <c><anno>NewData</anno></c>,
-	      and executes all <c><anno>Actions</anno></c>.
-	      This is the same as
+	      The same as
 	      <c>{next_state,CurrentState,<anno>NewData</anno>,<anno>Actions</anno>}</c>.
 	    </p>
 	  </item>
 	  <tag><c>keep_state_and_data</c></tag>
 	  <item>
 	    <p>
-	      The <c>gen_statem</c> keeps the current state or
-	      does a state transition to the current state if you like,
-	      keeps the current server data,
-	      and executes all <c><anno>Actions</anno></c>.
-	      This is the same as
-	      <c>{next_state,CurrentState,CurrentData,<anno>Actions</anno>}</c>.
+	      The same as
+	      <c>{keep_state,CurrentData,<anno>Actions</anno>}</c>.
 	    </p>
 	  </item>
 	  <tag><c>repeat_state</c></tag>
 	  <item>
 	    <p>
-	      The <c>gen_statem</c> keeps the current state, or
-	      does a state transition to the current state if you like,
-	      sets <c><anno>NewData</anno></c>,
-	      and executes all <c><anno>Actions</anno></c>.
 	      If the <c>gen_statem</c> runs with
 	      <seealso marker="#type-state_enter"><em>state enter calls</em></seealso>,
-	      the state enter call is repeated, see type
+	      the <em>state enter call</em> is repeated, see type
 	      <seealso marker="#type-transition_option"><c>transition_option()</c></seealso>,
-	      otherwise <c>repeat_state</c> is the same as
+	      other than that <c>repeat_state</c> is the same as
 	      <c>keep_state</c>.
 	    </p>
 	  </item>
 	  <tag><c>repeat_state_and_data</c></tag>
 	  <item>
 	    <p>
-	      The <c>gen_statem</c> keeps the current state and data, or
-	      does a state transition to the current state if you like,
-	      and executes all <c><anno>Actions</anno></c>.
-	      This is the same as
+	      The same as
 	      <c>{repeat_state,CurrentData,<anno>Actions</anno>}</c>.
-	      If the <c>gen_statem</c> runs with
-	      <seealso marker="#type-state_enter"><em>state enter calls</em></seealso>,
-	      the state enter call is repeated, see type
-	      <seealso marker="#type-transition_option"><c>transition_option()</c></seealso>,
-	      otherwise <c>repeat_state_and_data</c> is the same as
-	      <c>keep_state_and_data</c>.
 	    </p>
 	  </item>
 	  <tag><c>stop</c></tag>
@@ -1398,8 +1418,8 @@ handle_event(_, _, State, Data) ->
 
   <funcs>
     <func>
-      <name name="call" arity="2"/>
-      <name name="call" arity="3"/>
+      <name name="call" arity="2" since="OTP 19.0"/>
+      <name name="call" arity="3" since="OTP 19.0"/>
       <fsummary>Make a synchronous call to a <c>gen_statem</c>.</fsummary>
       <desc>
         <p>
@@ -1408,14 +1428,15 @@ handle_event(_, _, State, Data) ->
 	  by sending a request
 	  and waiting until its reply arrives.
 	  The <c>gen_statem</c> calls the
-	  <seealso marker="#state callback">state callback</seealso> with
+	  <seealso marker="#state callback"><em>state callback</em></seealso>
+	  with
 	  <seealso marker="#type-event_type"><c>event_type()</c></seealso>
 	  <c>{call,From}</c> and event content
 	  <c><anno>Request</anno></c>.
 	</p>
 	<p>
 	  A <c><anno>Reply</anno></c> is generated when a
-	  <seealso marker="#state callback">state callback</seealso>
+	  <seealso marker="#state callback"><em>state callback</em></seealso>
 	  returns with
 	  <c>{reply,From,<anno>Reply</anno>}</c> as one
 	  <seealso marker="#type-action"><c>action()</c></seealso>,
@@ -1474,7 +1495,7 @@ handle_event(_, _, State, Data) ->
     </func>
 
     <func>
-      <name name="cast" arity="2"/>
+      <name name="cast" arity="2" since="OTP 19.0"/>
       <fsummary>Send an asynchronous event to a <c>gen_statem</c>.</fsummary>
       <desc>
 	<p>
@@ -1484,7 +1505,8 @@ handle_event(_, _, State, Data) ->
 	  ignoring if the destination node or <c>gen_statem</c>
 	  does not exist.
 	  The <c>gen_statem</c> calls the
-	  <seealso marker="#state callback">state callback</seealso> with
+	  <seealso marker="#state callback"><em>state callback</em></seealso>
+	  with
 	  <seealso marker="#type-event_type"><c>event_type()</c></seealso>
 	  <c>cast</c> and event content
 	  <c><anno>Msg</anno></c>.
@@ -1493,7 +1515,7 @@ handle_event(_, _, State, Data) ->
     </func>
 
     <func>
-      <name name="enter_loop" arity="4"/>
+      <name name="enter_loop" arity="4" since="OTP 19.1"/>
       <fsummary>Enter the <c>gen_statem</c> receive loop.</fsummary>
       <desc>
 	<p>
@@ -1507,7 +1529,7 @@ handle_event(_, _, State, Data) ->
     </func>
 
     <func>
-      <name name="enter_loop" arity="5"/>
+      <name name="enter_loop" arity="5" since="OTP 19.0"/>
       <fsummary>Enter the <c>gen_statem</c> receive loop.</fsummary>
       <desc>
 	<p>
@@ -1531,7 +1553,7 @@ handle_event(_, _, State, Data) ->
     </func>
 
     <func>
-      <name name="enter_loop" arity="6"/>
+      <name name="enter_loop" arity="6" since="OTP 19.0"/>
       <fsummary>Enter the <c>gen_statem</c> receive loop.</fsummary>
       <desc>
 	<p>
@@ -1588,8 +1610,8 @@ handle_event(_, _, State, Data) ->
     </func>
 
     <func>
-      <name name="reply" arity="1"/>
-      <name name="reply" arity="2"/>
+      <name name="reply" arity="1" since="OTP 19.0"/>
+      <name name="reply" arity="2" since="OTP 19.0"/>
       <fsummary>Reply to a caller.</fsummary>
       <desc>
         <p>
@@ -1598,18 +1620,18 @@ handle_event(_, _, State, Data) ->
 	  <seealso marker="#call/2"><c>call/2</c></seealso>
 	  when the reply cannot be defined in
 	  the return value of a
-	  <seealso marker="#state callback">state callback</seealso>.
+	  <seealso marker="#state callback"><em>state callback</em></seealso>.
 	</p>
 	<p>
 	  <c><anno>From</anno></c> must be the term from argument
 	  <seealso marker="#type-event_type"><c>{call,<anno>From</anno>}</c></seealso>
 	  to the
-	  <seealso marker="#state callback">state callback</seealso>.
+	  <seealso marker="#state callback"><em>state callback</em></seealso>.
 	  A reply or multiple replies canalso be sent
 	  using one or several
 	  <seealso marker="#type-reply_action"><c>reply_action()</c></seealso>s
 	  from a
-	  <seealso marker="#state callback">state callback</seealso>.
+	  <seealso marker="#state callback"><em>state callback</em></seealso>.
 	</p>
 	<note>
 	  <p>
@@ -1621,8 +1643,8 @@ handle_event(_, _, State, Data) ->
     </func>
 
     <func>
-      <name name="start" arity="3"/>
-      <name name="start" arity="4"/>
+      <name name="start" arity="3" since="OTP 19.0"/>
+      <name name="start" arity="4" since="OTP 19.0"/>
       <fsummary>Create a standalone <c>gen_statem</c> process.</fsummary>
       <desc>
         <p>
@@ -1642,8 +1664,8 @@ handle_event(_, _, State, Data) ->
     </func>
 
     <func>
-      <name name="start_link" arity="3"/>
-      <name name="start_link" arity="4"/>
+      <name name="start_link" arity="3" since="OTP 19.0"/>
+      <name name="start_link" arity="4" since="OTP 19.0"/>
       <fsummary>Create a linked <c>gen_statem</c> process.</fsummary>
       <desc>
         <p>
@@ -1681,7 +1703,11 @@ handle_event(_, _, State, Data) ->
         <list type="bulleted">
           <item>
 	    <p>
-	      If option <c>{timeout,Time}</c> is present in
+	      If option
+	      <seealso marker="#type-start_opt">
+		<c>{timeout,Time}</c>
+	      </seealso>
+	      is present in
 	      <c><anno>Opts</anno></c>, the <c>gen_statem</c>
 	      is allowed to spend <c>Time</c> milliseconds initializing
 	      or it terminates and the start function returns
@@ -1689,23 +1715,33 @@ handle_event(_, _, State, Data) ->
             </p>
           </item>
           <item>
-            <p>If option<seealso marker="#type-hibernate_after_opt"><c>{hibernate_after,HibernateAfterTimeout}</c></seealso> is present, the <c>gen_statem</c>
-              process awaits any message for <c>HibernateAfterTimeout</c> milliseconds and
-              if no message is received, the process goes into hibernation automatically
-              (by calling <seealso marker="proc_lib#hibernate/3"><c>proc_lib:hibernate/3</c></seealso>).
+            <p>If option
+	    <seealso marker="#type-enter_loop_opt">
+	      <c>{hibernate_after,HibernateAfterTimeout}</c>
+	    </seealso>
+	    is present, the <c>gen_statem</c>
+            process awaits any message for <c>HibernateAfterTimeout</c> milliseconds and
+            if no message is received, the process goes into hibernation automatically
+            (by calling <seealso marker="proc_lib#hibernate/3"><c>proc_lib:hibernate/3</c></seealso>).
             </p>
           </item>
           <item>
             <p>
               If option
-              <seealso marker="#type-debug_opt"><c>{debug,Dbgs}</c></seealso>
+              <seealso marker="#type-enter_loop_opt">
+		<c>{debug,Dbgs}</c>
+	      </seealso>
               is present in <c><anno>Opts</anno></c>, debugging through
               <seealso marker="sys"><c>sys</c></seealso> is activated.
             </p>
           </item>
           <item>
             <p>
-              If option <c>{spawn_opt,SpawnOpts}</c> is present in
+              If option
+              <seealso marker="#type-start_opt">
+		<c>{spawn_opt,SpawnOpts}</c>
+	      </seealso>
+	      is present in
               <c><anno>Opts</anno></c>, <c>SpawnOpts</c> is passed
               as option list to
 	      <seealso marker="erts:erlang#spawn_opt/2"><c>erlang:spawn_opt/2</c></seealso>,
@@ -1750,7 +1786,7 @@ handle_event(_, _, State, Data) ->
     </func>
 
     <func>
-      <name name="stop" arity="1"/>
+      <name name="stop" arity="1" since="OTP 19.0"/>
       <fsummary>Synchronously stop a generic server.</fsummary>
       <desc>
 	<p>
@@ -1761,7 +1797,7 @@ handle_event(_, _, State, Data) ->
     </func>
 
     <func>
-      <name name="stop" arity="3"/>
+      <name name="stop" arity="3" since="OTP 19.0"/>
       <fsummary>Synchronously stop a generic server.</fsummary>
       <desc>
 	<p>
@@ -1807,7 +1843,7 @@ handle_event(_, _, State, Data) ->
 
   <funcs>
     <func>
-      <name>Module:callback_mode() -> CallbackMode</name>
+      <name since="OTP 19.1">Module:callback_mode() -> CallbackMode</name>
       <fsummary>Update the internal state during upgrade/downgrade.</fsummary>
       <type>
 	<v>
@@ -1826,7 +1862,7 @@ handle_event(_, _, State, Data) ->
 	  for efficiency reasons, so this function is only called
 	  once after server start and after code change,
 	  but before the first
-	  <seealso marker="#state callback">state callback</seealso>
+	  <seealso marker="#state callback"><em>state callback</em></seealso>
 	  in the current code version is called.
 	  More occasions may be added in future versions
 	  of <c>gen_statem</c>.
@@ -1858,7 +1894,7 @@ handle_event(_, _, State, Data) ->
     </func>
 
     <func>
-      <name>Module:code_change(OldVsn, OldState, OldData, Extra) ->
+      <name since="OTP 19.0">Module:code_change(OldVsn, OldState, OldData, Extra) ->
         Result
       </name>
       <fsummary>Update the internal state during upgrade/downgrade.</fsummary>
@@ -1883,7 +1919,7 @@ handle_event(_, _, State, Data) ->
           <p>
 	    This callback is optional, so callback modules need not export it.
             If a release upgrade/downgrade with
-	    <c>Change={advanced,Extra}</c>
+	    <c>Change = {advanced,Extra}</c>
 	    specified in the <c>.appup</c> file is made
 	    when <c>code_change/4</c> is not implemented
 	    the process will crash with exit reason <c>undef</c>.
@@ -1893,7 +1929,7 @@ handle_event(_, _, State, Data) ->
 	  This function is called by a <c>gen_statem</c> when it is to
 	  update its internal state during a release upgrade/downgrade,
 	  that is, when the instruction <c>{update,Module,Change,...}</c>,
-	  where <c>Change={advanced,Extra}</c>, is specified in the
+	  where <c>Change = {advanced,Extra}</c>, is specified in the
 	  <seealso marker="sasl:appup"><c>appup</c></seealso>
 	  file. For more information, see
 	  <seealso marker="doc/design_principles:release_handling#instr">OTP Design Principles</seealso>.
@@ -1922,7 +1958,7 @@ handle_event(_, _, State, Data) ->
 	<p>
 	  If the function returns a failure <c>Reason</c>, the ongoing
 	  upgrade fails and rolls back to the old release.
-	  Note that <c>Reason</c> can not be an <c>{ok,_,_}</c> tuple
+	  Note that <c>Reason</c> cannot be an <c>{ok,_,_}</c> tuple
 	  since that will be regarded as a
 	  <c>{ok,NewState,NewData}</c> tuple,
 	  and that a tuple matching <c>{ok,_}</c>
@@ -1933,13 +1969,13 @@ handle_event(_, _, State, Data) ->
 	<p>
 	  Also note when upgrading a <c>gen_statem</c>,
 	  this function and hence
-	  the <c>Change={advanced,Extra}</c> parameter in the
+	  the <c>Change = {advanced,Extra}</c> parameter in the
 	  <seealso marker="sasl:appup"><c>appup</c></seealso> file
 	  is not only needed to update the internal state
 	  or to act on the <c>Extra</c> argument.
 	  It is also needed if an upgrade or downgrade should change 
 	  <seealso marker="#type-callback_mode"><em>callback mode</em></seealso>,
-	  or else the callback mode after the code change
+	  or else the <em>callback mode</em> after the code change
 	  will not be honoured,
 	  most probably causing a server crash.
 	</p>
@@ -1947,7 +1983,7 @@ handle_event(_, _, State, Data) ->
     </func>
 
     <func>
-      <name>Module:init(Args) -> Result(StateType)</name>
+      <name since="OTP 19.0">Module:init(Args) -> Result(StateType)</name>
       <fsummary>
 	Initializing process and internal state.
       </fsummary>
@@ -1989,7 +2025,7 @@ init(Args) -> erlang:error(not_implemented, [Args]).</pre>
     </func>
 
     <func>
-      <name>Module:format_status(Opt, [PDict,State,Data]) ->
+      <name since="OTP 19.0">Module:format_status(Opt, [PDict,State,Data]) ->
         Status
       </name>
       <fsummary>Optional function for providing a term describing the
@@ -2088,16 +2124,16 @@ init(Args) -> erlang:error(not_implemented, [Args]).</pre>
     </func>
 
     <func>
-      <name>Module:StateName(enter, OldState, Data) ->
+      <name since="OTP 19.0">Module:StateName(enter, OldState, Data) ->
         StateEnterResult(StateName)
       </name>
-      <name>Module:StateName(EventType, EventContent, Data) ->
+      <name since="OTP 19.0">Module:StateName(EventType, EventContent, Data) ->
         StateFunctionResult
       </name>
-      <name>Module:handle_event(enter, OldState, State, Data) ->
+      <name since="OTP 19.0">Module:handle_event(enter, OldState, State, Data) ->
 	StateEnterResult(State)
       </name>
-      <name>Module:handle_event(EventType, EventContent, State, Data) ->
+      <name since="OTP 19.0">Module:handle_event(EventType, EventContent, State, Data) ->
 	HandleEventResult
       </name>
       <fsummary>Handle an event.</fsummary>
@@ -2148,7 +2184,7 @@ init(Args) -> erlang:error(not_implemented, [Args]).</pre>
 	  <seealso marker="#type-event_type"><c>{call,From}</c></seealso>,
 	  the caller waits for a reply. The reply can be sent
 	  from this or from any other
-	  <seealso marker="#state callback">state callback</seealso>
+	  <seealso marker="#state callback"><em>state callback</em></seealso>
 	  by returning with <c>{reply,From,Reply}</c> in
 	  <seealso marker="#type-action"><c>Actions</c></seealso>, in
 	  <seealso marker="#type-reply_action"><c>Replies</c></seealso>,
@@ -2173,9 +2209,9 @@ init(Args) -> erlang:error(not_implemented, [Args]).</pre>
 	</p>
 	<p>
 	  When the <c>gen_statem</c> runs with
-	  <seealso marker="#type-state_enter">state enter calls</seealso>,
+	  <seealso marker="#type-state_enter"><em>state enter calls</em></seealso>,
 	  these functions are also called with arguments
-	  <c>(enter, OldState, ...)</c> whenever the state changes.
+	  <c>(enter, OldState, ...)</c> during every <em>state change</em>.
 	  In this case there are some restrictions on the
 	  <seealso marker="#type-enter_action">actions</seealso>
 	  that may be returned:
@@ -2208,7 +2244,7 @@ init(Args) -> erlang:error(not_implemented, [Args]).</pre>
 	  <seealso marker="erts:erlang#throw/1"><c>throw</c></seealso>
 	  to return the result, which can be useful.
 	  For example to bail out with <c>throw(keep_state_and_data)</c>
-	  from deep within complex code that can not
+	  from deep within complex code that cannot
 	  return <c>{next_state,State,Data}</c> because
 	  <c>State</c> or <c>Data</c> is no longer in scope.
 	</p>
@@ -2216,7 +2252,7 @@ init(Args) -> erlang:error(not_implemented, [Args]).</pre>
     </func>
 
     <func>
-      <name>Module:terminate(Reason, State, Data) -> Ignored</name>
+      <name since="OTP 19.0">Module:terminate(Reason, State, Data) -> Ignored</name>
       <fsummary>Clean up before termination.</fsummary>
       <type>
         <v>Reason = normal | shutdown | {shutdown,term()} | term()</v>
diff --git a/lib/stdlib/doc/src/io.xml b/lib/stdlib/doc/src/io.xml
index d4a2713840..d69e808586 100644
--- a/lib/stdlib/doc/src/io.xml
+++ b/lib/stdlib/doc/src/io.xml
@@ -28,7 +28,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>io</module>
+  <module since="">io</module>
   <modulesummary>Standard I/O server interface functions.</modulesummary>
   <description>
     <p>This module provides an interface to standard Erlang I/O servers.
@@ -104,8 +104,8 @@
 
   <funcs>
     <func>
-      <name name="columns" arity="0"/>
-      <name name="columns" arity="1"/>
+      <name name="columns" arity="0" since=""/>
+      <name name="columns" arity="1" since=""/>
       <fsummary>Get the number of columns of an I/O device.</fsummary>
       <desc>
           <p>Retrieves the number of columns of the
@@ -116,12 +116,12 @@
     </func>
 
     <func>
-      <name name="format" arity="1"/>
-      <name name="format" arity="2"/>
-      <name name="format" arity="3"/>
-      <name name="fwrite" arity="1"/>
-      <name name="fwrite" arity="2"/>
-      <name name="fwrite" arity="3"/>
+      <name name="format" arity="1" since=""/>
+      <name name="format" arity="2" since=""/>
+      <name name="format" arity="3" since=""/>
+      <name name="fwrite" arity="1" since=""/>
+      <name name="fwrite" arity="2" since=""/>
+      <name name="fwrite" arity="3" since=""/>
       <fsummary>Write formatted output.</fsummary>
       <desc>
         <p>Writes the items in <c><anno>Data</anno></c> (<c>[]</c>) on the
@@ -523,8 +523,8 @@ ok
     </func>
 
     <func>
-      <name name="fread" arity="2"/>
-      <name name="fread" arity="3"/>
+      <name name="fread" arity="2" since=""/>
+      <name name="fread" arity="3" since=""/>
       <fsummary>Read formatted input.</fsummary>
       <type name="server_no_data"/>
       <desc>
@@ -690,8 +690,8 @@ enter><input>:</input>   <input>alan</input>   <input>:</input>   <input>joe</in
     </func>
 
     <func>
-      <name name="get_chars" arity="2"/>
-      <name name="get_chars" arity="3"/>
+      <name name="get_chars" arity="2" since=""/>
+      <name name="get_chars" arity="3" since=""/>
       <fsummary>Read a specified number of characters.</fsummary>
       <type name="server_no_data"/>
       <desc>
@@ -722,8 +722,8 @@ enter><input>:</input>   <input>alan</input>   <input>:</input>   <input>joe</in
     </func>
 
     <func>
-      <name name="get_line" arity="1"/>
-      <name name="get_line" arity="2"/>
+      <name name="get_line" arity="1" since=""/>
+      <name name="get_line" arity="2" since=""/>
       <fsummary>Read a line.</fsummary>
       <type name="server_no_data"/>
       <desc>
@@ -754,8 +754,8 @@ enter><input>:</input>   <input>alan</input>   <input>:</input>   <input>joe</in
     </func>
 
     <func>
-      <name name="getopts" arity="0"/>
-      <name name="getopts" arity="1"/>
+      <name name="getopts" arity="0" since=""/>
+      <name name="getopts" arity="1" since=""/>
       <fsummary>Get the supported options and values from an I/O server.
       </fsummary>
       <desc>
@@ -781,8 +781,8 @@ enter><input>:</input>   <input>alan</input>   <input>:</input>   <input>joe</in
     </func>
 
     <func>
-      <name name="nl" arity="0"/>
-      <name name="nl" arity="1"/>
+      <name name="nl" arity="0" since=""/>
+      <name name="nl" arity="1" since=""/>
       <fsummary>Write a newline.</fsummary>
       <desc>
         <p>Writes new line to the standard output
@@ -791,10 +791,10 @@ enter><input>:</input>   <input>alan</input>   <input>:</input>   <input>joe</in
     </func>
 
     <func>
-      <name name="parse_erl_exprs" arity="1"/>
-      <name name="parse_erl_exprs" arity="2"/>
-      <name name="parse_erl_exprs" arity="3"/>
-      <name name="parse_erl_exprs" arity="4"/>
+      <name name="parse_erl_exprs" arity="1" since=""/>
+      <name name="parse_erl_exprs" arity="2" since=""/>
+      <name name="parse_erl_exprs" arity="3" since=""/>
+      <name name="parse_erl_exprs" arity="4" since="OTP R16B"/>
       <fsummary>Read, tokenize, and parse Erlang expressions.</fsummary>
       <type name="parse_ret"/>
       <type name="server_no_data"/>
@@ -844,10 +844,10 @@ enter><input>abc("hey".</input>
     </func>
 
     <func>
-      <name name="parse_erl_form" arity="1"/>
-      <name name="parse_erl_form" arity="2"/>
-      <name name="parse_erl_form" arity="3"/>
-      <name name="parse_erl_form" arity="4"/>
+      <name name="parse_erl_form" arity="1" since=""/>
+      <name name="parse_erl_form" arity="2" since=""/>
+      <name name="parse_erl_form" arity="3" since=""/>
+      <name name="parse_erl_form" arity="4" since="OTP R16B"/>
       <fsummary>Read, tokenize, and parse an Erlang form.</fsummary>
       <type name="parse_form_ret"/>
       <type name="server_no_data"/>
@@ -888,7 +888,7 @@ enter><input>abc("hey".</input>
     </func>
 
     <func>
-      <name name="printable_range" arity="0"/>
+      <name name="printable_range" arity="0" since="OTP R16B"/>
       <fsummary>Get user-requested printable character range.</fsummary>
       <desc>
         <p>Returns the user-requested range of printable Unicode characters.</p>
@@ -918,8 +918,8 @@ enter><input>abc("hey".</input>
     </func>
 
     <func>
-      <name name="put_chars" arity="1"/>
-      <name name="put_chars" arity="2"/>
+      <name name="put_chars" arity="1" since=""/>
+      <name name="put_chars" arity="2" since=""/>
       <fsummary>Write a list of characters.</fsummary>
       <desc>
         <p>Writes the characters of <c><anno>CharData</anno></c> to the I/O
@@ -928,8 +928,8 @@ enter><input>abc("hey".</input>
     </func>
 
     <func>
-      <name name="read" arity="1"/>
-      <name name="read" arity="2"/>
+      <name name="read" arity="1" since=""/>
+      <name name="read" arity="2" since=""/>
       <fsummary>Read a term.</fsummary>
       <type name="server_no_data"/>
       <desc>
@@ -960,8 +960,8 @@ enter><input>abc("hey".</input>
     </func>
 
     <func>
-      <name name="read" arity="3"/>
-      <name name="read" arity="4"/>
+      <name name="read" arity="3" since=""/>
+      <name name="read" arity="4" since="OTP R16B"/>
       <fsummary>Read a term.</fsummary>
       <type name="server_no_data"/>
       <desc>
@@ -997,8 +997,8 @@ enter><input>abc("hey".</input>
     </func>
 
     <func>
-      <name name="rows" arity="0"/>
-      <name name="rows" arity="1"/>
+      <name name="rows" arity="0" since=""/>
+      <name name="rows" arity="1" since=""/>
       <fsummary>Get the number of rows of an I/O device.</fsummary>
       <desc>
           <p>Retrieves the number of rows of <c><anno>IoDevice</anno></c>
@@ -1009,10 +1009,10 @@ enter><input>abc("hey".</input>
     </func>
 
     <func>
-      <name name="scan_erl_exprs" arity="1"/>
-      <name name="scan_erl_exprs" arity="2"/>
-      <name name="scan_erl_exprs" arity="3"/>
-      <name name="scan_erl_exprs" arity="4"/>
+      <name name="scan_erl_exprs" arity="1" since=""/>
+      <name name="scan_erl_exprs" arity="2" since=""/>
+      <name name="scan_erl_exprs" arity="3" since=""/>
+      <name name="scan_erl_exprs" arity="4" since="OTP R16B"/>
       <fsummary>Read and tokenize Erlang expressions.</fsummary>
       <type name="server_no_data"/>
       <desc>
@@ -1060,10 +1060,10 @@ enter><input>1.0er.</input>
     </func>
 
     <func>
-      <name name="scan_erl_form" arity="1"/>
-      <name name="scan_erl_form" arity="2"/>
-      <name name="scan_erl_form" arity="3"/>
-      <name name="scan_erl_form" arity="4"/>
+      <name name="scan_erl_form" arity="1" since=""/>
+      <name name="scan_erl_form" arity="2" since=""/>
+      <name name="scan_erl_form" arity="3" since=""/>
+      <name name="scan_erl_form" arity="4" since="OTP R16B"/>
       <fsummary>Read and tokenize an Erlang form.</fsummary>
       <type name="server_no_data"/>
       <desc>
@@ -1083,8 +1083,8 @@ enter><input>1.0er.</input>
     </func>
 
     <func>
-      <name name="setopts" arity="1"/>
-      <name name="setopts" arity="2"/>
+      <name name="setopts" arity="1" since=""/>
+      <name name="setopts" arity="2" since=""/>
       <fsummary>Set options.</fsummary>
       <desc>
         <p>Set options for the standard I/O device
@@ -1198,8 +1198,8 @@ fun("") -> {yes, "quit", []};
     </func>
 
     <func>
-      <name name="write" arity="1"/>
-      <name name="write" arity="2"/>
+      <name name="write" arity="1" since=""/>
+      <name name="write" arity="2" since=""/>
       <fsummary>Write a term.</fsummary>
       <desc>
         <p>Writes term <c><anno>Term</anno></c> to the standard output
diff --git a/lib/stdlib/doc/src/io_lib.xml b/lib/stdlib/doc/src/io_lib.xml
index a3df2897ac..4d527f8ed3 100644
--- a/lib/stdlib/doc/src/io_lib.xml
+++ b/lib/stdlib/doc/src/io_lib.xml
@@ -28,7 +28,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>io_lib</module>
+  <module since="">io_lib</module>
   <modulesummary>I/O library functions.</modulesummary>
   <description>
     <p>This module contains functions for converting to and from
@@ -99,7 +99,7 @@
 
   <funcs>
     <func>
-      <name name="build_text" arity="1"/>
+      <name name="build_text" arity="1" since="OTP 18.0"/>
       <fsummary>Build the output text for a preparsed format list.</fsummary>
       <desc>
         <p>For details, see
@@ -108,7 +108,7 @@
     </func>
 
     <func>
-      <name name="char_list" arity="1"/>
+      <name name="char_list" arity="1" since=""/>
       <fsummary>Test for a list of characters.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>Term</anno></c> is a flat list of
@@ -117,7 +117,7 @@
     </func>
 
     <func>
-      <name name="deep_char_list" arity="1"/>
+      <name name="deep_char_list" arity="1" since=""/>
       <fsummary>Test for a deep list of characters.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>Term</anno></c> is a, possibly deep,
@@ -126,7 +126,7 @@
     </func>
 
     <func>
-      <name name="deep_latin1_char_list" arity="1"/>
+      <name name="deep_latin1_char_list" arity="1" since="OTP R16B"/>
       <fsummary>Test for a deep list of characters.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>Term</anno></c> is a, possibly deep,
@@ -136,8 +136,8 @@
     </func>
 
     <func>
-      <name name="format" arity="2"/>
-      <name name="fwrite" arity="2"/>
+      <name name="format" arity="2" since=""/>
+      <name name="fwrite" arity="2" since=""/>
       <fsummary>Write formatted output.</fsummary>
       <desc>
         <p>Returns a character list that represents <c><anno>Data</anno></c>
@@ -156,8 +156,8 @@
     </func>
 
     <func>
-      <name name="format" arity="3"/>
-      <name name="fwrite" arity="3"/>
+      <name name="format" arity="3" since="OTP 21.0"/>
+      <name name="fwrite" arity="3" since="OTP 21.0"/>
       <fsummary>Write formatted output.</fsummary>
       <desc>
         <p>Returns a character list that represents <c><anno>Data</anno></c>
@@ -181,7 +181,7 @@
     </func>
 
     <func>
-      <name name="fread" arity="2"/>
+      <name name="fread" arity="2" since=""/>
       <fsummary>Read formatted input.</fsummary>
       <desc>
         <p>Tries to read <c><anno>String</anno></c> in accordance with the
@@ -222,7 +222,7 @@
     </func>
 
     <func>
-      <name name="fread" arity="3"/>
+      <name name="fread" arity="3" since=""/>
       <fsummary>Re-entrant formatted reader</fsummary>
       <desc>
         <p>This is the re-entrant formatted reader. The continuation of
@@ -268,7 +268,7 @@
     </func>
 
     <func>
-      <name name="indentation" arity="2"/>
+      <name name="indentation" arity="2" since=""/>
       <fsummary>Indentation after printing string.</fsummary>
       <desc>
         <p>Returns the indentation if <c><anno>String</anno></c> has been
@@ -277,7 +277,7 @@
     </func>
 
     <func>
-      <name name="latin1_char_list" arity="1"/>
+      <name name="latin1_char_list" arity="1" since="OTP R16B"/>
       <fsummary>Test for a list of ISO Latin-1 characters.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>Term</anno></c> is a flat list of
@@ -286,7 +286,7 @@
     </func>
 
     <func>
-      <name name="nl" arity="0"/>
+      <name name="nl" arity="0" since=""/>
       <fsummary>Write a newline.</fsummary>
       <desc>
         <p>Returns a character list that represents a new line character.</p>
@@ -294,8 +294,8 @@
     </func>
 
     <func>
-      <name name="print" arity="1"/>
-      <name name="print" arity="4"/>
+      <name name="print" arity="1" since=""/>
+      <name name="print" arity="4" since=""/>
       <fsummary>Pretty print a term.</fsummary>
       <desc>
         <p>Returns a list of characters that represents
@@ -315,7 +315,7 @@
     </func>
 
     <func>
-      <name name="printable_latin1_list" arity="1"/>
+      <name name="printable_latin1_list" arity="1" since="OTP R16B"/>
       <fsummary>Test for a list of printable ISO Latin-1 characters.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>Term</anno></c> is a flat list of
@@ -324,7 +324,7 @@
     </func>
 
     <func>
-      <name name="printable_list" arity="1"/>
+      <name name="printable_list" arity="1" since=""/>
       <fsummary>Test for a list of printable characters.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>Term</anno></c> is a flat list of
@@ -338,7 +338,7 @@
     </func>
 
     <func>
-      <name name="printable_unicode_list" arity="1"/>
+      <name name="printable_unicode_list" arity="1" since="OTP R16B"/>
       <fsummary>Test for a list of printable Unicode characters.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>Term</anno></c> is a flat list of
@@ -347,7 +347,7 @@
     </func>
 
     <func>
-      <name name="scan_format" arity="2"/>
+      <name name="scan_format" arity="2" since="OTP 18.0"/>
       <fsummary>Parse all control sequences in the format string.</fsummary>
       <desc>
         <p>Returns a list corresponding to the specified format string,
@@ -373,7 +373,7 @@
     </func>
 
     <func>
-      <name name="unscan_format" arity="1"/>
+      <name name="unscan_format" arity="1" since="OTP 18.0"/>
       <fsummary>Revert a preparsed format list to a plain character list
         and a list of arguments.</fsummary>
       <desc>
@@ -383,9 +383,9 @@
     </func>
 
     <func>
-      <name name="write" arity="1"/>
-      <name name="write" arity="2" clause_i="1"/>
-      <name name="write" arity="2" clause_i="2"/>
+      <name name="write" arity="1" since=""/>
+      <name name="write" arity="2" clause_i="1" since=""/>
+      <name name="write" arity="2" clause_i="2" since="OTP 20.0"/>
       <fsummary>Write a term.</fsummary>
       <desc>
         <p>Returns a character list that represents <c><anno>Term</anno></c>.
@@ -411,7 +411,7 @@
     </func>
 
     <func>
-      <name name="write_atom" arity="1"/>
+      <name name="write_atom" arity="1" since=""/>
       <fsummary>Write an atom.</fsummary>
       <desc>
         <p>Returns the list of characters needed to print atom
@@ -420,7 +420,7 @@
     </func>
 
     <func>
-      <name name="write_atom_as_latin1" arity="1"/>
+      <name name="write_atom_as_latin1" arity="1" since="OTP 20.0"/>
       <fsummary>Write an atom.</fsummary>
       <desc>
         <p>Returns the list of characters needed to print atom
@@ -430,7 +430,7 @@
     </func>
 
     <func>
-      <name name="write_char" arity="1"/>
+      <name name="write_char" arity="1" since=""/>
       <fsummary>Write a character.</fsummary>
       <desc>
         <p>Returns the list of characters needed to print a character
@@ -439,7 +439,7 @@
     </func>
 
     <func>
-      <name name="write_char_as_latin1" arity="1"/>
+      <name name="write_char_as_latin1" arity="1" since="OTP R16B"/>
       <fsummary>Write a character.</fsummary>
       <desc>
         <p>Returns the list of characters needed to print a character
@@ -449,7 +449,7 @@
     </func>
 
     <func>
-      <name name="write_latin1_char" arity="1"/>
+      <name name="write_latin1_char" arity="1" since="OTP R16B"/>
       <fsummary>Write an ISO Latin-1 character.</fsummary>
       <desc>
         <p>Returns the list of characters needed to print a character
@@ -458,7 +458,7 @@
     </func>
 
     <func>
-      <name name="write_latin1_string" arity="1"/>
+      <name name="write_latin1_string" arity="1" since="OTP R16B"/>
       <fsummary>Write an ISO Latin-1 string.</fsummary>
       <desc>
         <p>Returns the list of characters needed to print
@@ -467,7 +467,7 @@
     </func>
 
     <func>
-      <name name="write_string" arity="1"/>
+      <name name="write_string" arity="1" since=""/>
       <fsummary>Write a string.</fsummary>
       <desc>
         <p>Returns the list of characters needed to print
@@ -476,7 +476,7 @@
     </func>
 
     <func>
-      <name name="write_string_as_latin1" arity="1"/>
+      <name name="write_string_as_latin1" arity="1" since="OTP R16B"/>
       <fsummary>Write a string.</fsummary>
       <desc>
         <p>Returns the list of characters needed to print
diff --git a/lib/stdlib/doc/src/lists.xml b/lib/stdlib/doc/src/lists.xml
index e4215a5336..2755fb3dce 100644
--- a/lib/stdlib/doc/src/lists.xml
+++ b/lib/stdlib/doc/src/lists.xml
@@ -4,7 +4,7 @@
 <erlref>
   <header>
     <copyright>
-      <year>1996</year><year>2018</year>
+      <year>1996</year><year>2019</year>
       <holder>Ericsson AB. All Rights Reserved.</holder>
     </copyright>
     <legalnotice>
@@ -28,7 +28,7 @@
     <date>1996-09-28</date>
     <rev>A</rev>
   </header>
-  <module>lists</module>
+  <module since="">lists</module>
   <modulesummary>List processing functions.</modulesummary>
   <description>
     <p>This module contains functions for list processing.</p>
@@ -63,7 +63,7 @@
 
   <funcs>
     <func>
-      <name name="all" arity="2"/>
+      <name name="all" arity="2" since=""/>
       <fsummary>Return <c>true</c> if all elements in a list satisfy
         <c>Pred</c>.</fsummary>
       <desc>
@@ -74,7 +74,7 @@
     </func>
 
     <func>
-      <name name="any" arity="2"/>
+      <name name="any" arity="2" since=""/>
       <fsummary>Return <c>true</c> if any of the elements in a list
         satisfies <c>Pred</c>.</fsummary>
       <desc>
@@ -85,7 +85,7 @@
     </func>
 
     <func>
-      <name name="append" arity="1"/>
+      <name name="append" arity="1" since=""/>
       <fsummary>Append a list of lists.</fsummary>
       <desc>
         <p>Returns a list in which all the sublists of
@@ -98,7 +98,7 @@
     </func>
 
     <func>
-      <name name="append" arity="2"/>
+      <name name="append" arity="2" since=""/>
       <fsummary>Append two lists.</fsummary>
       <desc>
         <p>Returns a new list <c><anno>List3</anno></c>, which is made from
@@ -113,7 +113,7 @@
     </func>
 
     <func>
-      <name name="concat" arity="1"/>
+      <name name="concat" arity="1" since=""/>
       <fsummary>Concatenate a list of atoms.</fsummary>
       <desc>
         <p>Concatenates the text representation of the elements of
@@ -127,7 +127,7 @@
     </func>
 
     <func>
-      <name name="delete" arity="2"/>
+      <name name="delete" arity="2" since=""/>
       <fsummary>Delete an element from a list.</fsummary>
       <desc>
         <p>Returns a copy of <c><anno>List1</anno></c> where the first element
@@ -137,7 +137,7 @@
     </func>
 
     <func>
-      <name name="droplast" arity="1"/>
+      <name name="droplast" arity="1" since="OTP 17.0"/>
       <fsummary>Drop the last element of a list.</fsummary>
       <desc>
         <p>Drops the last element of a <c><anno>List</anno></c>. The list is to
@@ -147,7 +147,7 @@
     </func>
 
     <func>
-      <name name="dropwhile" arity="2"/>
+      <name name="dropwhile" arity="2" since=""/>
       <fsummary>Drop elements from a list while a predicate is <c>true</c>.
       </fsummary>
       <desc>
@@ -159,7 +159,7 @@
     </func>
 
     <func>
-      <name name="duplicate" arity="2"/>
+      <name name="duplicate" arity="2" since=""/>
       <fsummary>Make <c>N</c> copies of element.</fsummary>
       <desc>
         <p>Returns a list containing <c><anno>N</anno></c> copies of term
@@ -172,7 +172,7 @@
     </func>
 
     <func>
-      <name name="filter" arity="2"/>
+      <name name="filter" arity="2" since=""/>
       <fsummary>Select elements that satisfy a predicate.</fsummary>
       <desc>
         <p><c><anno>List2</anno></c> is a list of all elements
@@ -182,7 +182,7 @@
     </func>
 
     <func>
-      <name name="filtermap" arity="2"/>
+      <name name="filtermap" arity="2" since="OTP R16B01"/>
       <fsummary>Filter and map elements that satisfy a function.</fsummary>
       <desc>
         <p>Calls <c><anno>Fun</anno>(<anno>Elem</anno>)</c> on successive
@@ -211,7 +211,7 @@ filtermap(Fun, List1) ->
     </func>
 
     <func>
-      <name name="flatlength" arity="1"/>
+      <name name="flatlength" arity="1" since=""/>
       <fsummary>Length of flattened deep list.</fsummary>
       <desc>
         <p>Equivalent to <c>length(flatten(<anno>DeepList</anno>))</c>, but
@@ -220,7 +220,7 @@ filtermap(Fun, List1) ->
     </func>
 
     <func>
-      <name name="flatmap" arity="2"/>
+      <name name="flatmap" arity="2" since=""/>
       <fsummary>Map and flatten in one pass.</fsummary>
       <desc>
         <p>Takes a function from <c><anno>A</anno></c>s to lists of
@@ -241,7 +241,7 @@ flatmap(Fun, List1) ->
     </func>
 
     <func>
-      <name name="flatten" arity="1"/>
+      <name name="flatten" arity="1" since=""/>
       <fsummary>Flatten a deep list.</fsummary>
       <desc>
         <p>Returns a flattened version of <c><anno>DeepList</anno></c>.</p>
@@ -249,7 +249,7 @@ flatmap(Fun, List1) ->
     </func>
 
     <func>
-      <name name="flatten" arity="2"/>
+      <name name="flatten" arity="2" since=""/>
       <fsummary>Flatten a deep list.</fsummary>
       <desc>
         <p>Returns a flattened version of <c><anno>DeepList</anno></c> with tail
@@ -258,7 +258,7 @@ flatmap(Fun, List1) ->
     </func>
 
     <func>
-      <name name="foldl" arity="3"/>
+      <name name="foldl" arity="3" since=""/>
       <fsummary>Fold a function over a list.</fsummary>
       <desc>
         <p>Calls <c><anno>Fun</anno>(<anno>Elem</anno>, <anno>AccIn</anno>)</c>
@@ -278,7 +278,7 @@ flatmap(Fun, List1) ->
     </func>
 
     <func>
-      <name name="foldr" arity="3"/>
+      <name name="foldr" arity="3" since=""/>
       <fsummary>Fold a function over a list.</fsummary>
       <desc>
         <p>Like <seealso marker="#foldl/3"><c>foldl/3</c></seealso>, but the
@@ -297,7 +297,7 @@ flatmap(Fun, List1) ->
     </func>
 
     <func>
-      <name name="join" arity="2"/>
+      <name name="join" arity="2" since="OTP 19.0"/>
       <fsummary>Insert an element between elements in a list</fsummary>
       <desc>
         <p>Inserts <c><anno>Sep</anno></c> between each element in <c><anno>List1</anno></c>. Has no
@@ -312,7 +312,7 @@ flatmap(Fun, List1) ->
       </desc>
     </func>
     <func>
-      <name name="foreach" arity="2"/>
+      <name name="foreach" arity="2" since=""/>
       <fsummary>Apply a function to each element of a list.</fsummary>
       <desc>
         <p>Calls <c><anno>Fun</anno>(<anno>Elem</anno>)</c> for each element
@@ -324,7 +324,7 @@ flatmap(Fun, List1) ->
     </func>
 
     <func>
-      <name name="keydelete" arity="3"/>
+      <name name="keydelete" arity="3" since=""/>
       <fsummary>Delete an element from a list of tuples.</fsummary>
       <type_desc variable="N">1..tuple_size(<anno>Tuple</anno>)</type_desc>
       <desc>
@@ -336,7 +336,7 @@ flatmap(Fun, List1) ->
     </func>
 
     <func>
-      <name name="keyfind" arity="3"/>
+      <name name="keyfind" arity="3" since=""/>
       <fsummary>Search for an element in a list of tuples.</fsummary>
       <type_desc variable="N">1..tuple_size(<anno>Tuple</anno>)</type_desc>
       <desc>
@@ -349,7 +349,7 @@ flatmap(Fun, List1) ->
     </func>
 
     <func>
-      <name name="keymap" arity="3"/>
+      <name name="keymap" arity="3" since=""/>
       <fsummary>Map a function over a list of tuples.</fsummary>
       <type_desc variable="N">1..tuple_size(<anno>Tuple</anno>)</type_desc>
       <desc>
@@ -368,7 +368,7 @@ flatmap(Fun, List1) ->
     </func>
 
     <func>
-      <name name="keymember" arity="3"/>
+      <name name="keymember" arity="3" since=""/>
       <fsummary>Test for membership of a list of tuples.</fsummary>
       <type_desc variable="N">1..tuple_size(<anno>Tuple</anno>)</type_desc>
       <desc>
@@ -379,7 +379,7 @@ flatmap(Fun, List1) ->
     </func>
 
     <func>
-      <name name="keymerge" arity="3"/>
+      <name name="keymerge" arity="3" since=""/>
       <fsummary>Merge two key-sorted lists of tuples.</fsummary>
       <type_desc variable="N">1..tuple_size(<anno>Tuple</anno>)</type_desc>
       <desc>
@@ -395,7 +395,7 @@ flatmap(Fun, List1) ->
     </func>
 
     <func>
-      <name name="keyreplace" arity="4"/>
+      <name name="keyreplace" arity="4" since=""/>
       <fsummary>Replace an element in a list of tuples.</fsummary>
       <type_desc variable="N">1..tuple_size(<anno>Tuple</anno>)</type_desc>
       <desc>
@@ -407,7 +407,7 @@ flatmap(Fun, List1) ->
     </func>
 
     <func>
-      <name name="keysearch" arity="3"/>
+      <name name="keysearch" arity="3" since=""/>
       <fsummary>Search for an element in a list of tuples.</fsummary>
       <type_desc variable="N">1..tuple_size(<anno>Tuple</anno>)</type_desc>
       <desc>
@@ -425,7 +425,7 @@ flatmap(Fun, List1) ->
     </func>
 
     <func>
-      <name name="keysort" arity="2"/>
+      <name name="keysort" arity="2" since=""/>
       <fsummary>Sort a list of tuples.</fsummary>
       <type_desc variable="N">1..tuple_size(<anno>Tuple</anno>)</type_desc>
       <desc>
@@ -436,7 +436,7 @@ flatmap(Fun, List1) ->
     </func>
 
     <func>
-      <name name="keystore" arity="4"/>
+      <name name="keystore" arity="4" since=""/>
       <fsummary>Store an element in a list of tuples.</fsummary>
       <type_desc variable="N">1..tuple_size(<anno>Tuple</anno>)</type_desc>
       <desc>
@@ -452,7 +452,7 @@ flatmap(Fun, List1) ->
     </func>
 
     <func>
-      <name name="keytake" arity="3"/>
+      <name name="keytake" arity="3" since=""/>
       <fsummary>Extract an element from a list of tuples.</fsummary>
       <type_desc variable="N">1..tuple_size(<anno>Tuple</anno>)</type_desc>
       <desc>
@@ -467,7 +467,7 @@ flatmap(Fun, List1) ->
     </func>
 
     <func>
-      <name name="last" arity="1"/>
+      <name name="last" arity="1" since=""/>
       <fsummary>Return last element in a list.</fsummary>
       <desc>
         <p>Returns the last element in <c><anno>List</anno></c>.</p>
@@ -475,7 +475,7 @@ flatmap(Fun, List1) ->
     </func>
 
     <func>
-      <name name="map" arity="2"/>
+      <name name="map" arity="2" since=""/>
       <fsummary>Map a function over a list.</fsummary>
       <desc>
         <p>Takes a function from <c><anno>A</anno></c>s to
@@ -488,7 +488,7 @@ flatmap(Fun, List1) ->
     </func>
 
     <func>
-      <name name="mapfoldl" arity="3"/>
+      <name name="mapfoldl" arity="3" since=""/>
       <fsummary>Map and fold in one pass.</fsummary>
       <desc>
         <p>Combines the operations of
@@ -504,7 +504,7 @@ flatmap(Fun, List1) ->
     </func>
 
     <func>
-      <name name="mapfoldr" arity="3"/>
+      <name name="mapfoldr" arity="3" since=""/>
       <fsummary>Map and fold in one pass.</fsummary>
       <desc>
         <p>Combines the operations of
@@ -514,7 +514,7 @@ flatmap(Fun, List1) ->
     </func>
 
     <func>
-      <name name="max" arity="1"/>
+      <name name="max" arity="1" since=""/>
       <fsummary>Return maximum element of a list.</fsummary>
       <desc>
         <p>Returns the first element of <c><anno>List</anno></c> that compares
@@ -524,7 +524,7 @@ flatmap(Fun, List1) ->
     </func>
 
     <func>
-      <name name="member" arity="2"/>
+      <name name="member" arity="2" since=""/>
       <fsummary>Test for membership of a list.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>Elem</anno></c> matches some element
@@ -533,7 +533,7 @@ flatmap(Fun, List1) ->
     </func>
 
     <func>
-      <name name="merge" arity="1"/>
+      <name name="merge" arity="1" since=""/>
       <fsummary>Merge a list of sorted lists.</fsummary>
       <desc>
         <p>Returns the sorted list formed by merging all the sublists of
@@ -546,7 +546,7 @@ flatmap(Fun, List1) ->
     </func>
 
     <func>
-      <name name="merge" arity="2"/>
+      <name name="merge" arity="2" since=""/>
       <fsummary>Merge two sorted lists.</fsummary>
       <desc>
         <p>Returns the sorted list formed by merging <c><anno>List1</anno></c>
@@ -559,7 +559,7 @@ flatmap(Fun, List1) ->
     </func>
 
     <func>
-      <name name="merge" arity="3"/>
+      <name name="merge" arity="3" since=""/>
       <fsummary>Merge two sorted list.</fsummary>
       <desc>
         <p>Returns the sorted list formed by merging <c><anno>List1</anno></c>
@@ -577,7 +577,7 @@ flatmap(Fun, List1) ->
     </func>
 
     <func>
-      <name name="merge3" arity="3"/>
+      <name name="merge3" arity="3" since=""/>
       <fsummary>Merge three sorted lists.</fsummary>
       <desc>
         <p>Returns the sorted list formed by merging <c><anno>List1</anno></c>,
@@ -593,7 +593,7 @@ flatmap(Fun, List1) ->
     </func>
 
     <func>
-      <name name="min" arity="1"/>
+      <name name="min" arity="1" since=""/>
       <fsummary>Return minimum element of a list.</fsummary>
       <desc>
         <p>Returns the first element of <c><anno>List</anno></c> that compares
@@ -603,7 +603,7 @@ flatmap(Fun, List1) ->
     </func>
 
     <func>
-      <name name="nth" arity="2"/>
+      <name name="nth" arity="2" since=""/>
       <fsummary>Return the <c>N</c>th element of a list.</fsummary>
       <type_desc variable="N">1..length(<anno>List</anno>)</type_desc>
       <desc>
@@ -617,7 +617,7 @@ c</pre>
     </func>
 
     <func>
-      <name name="nthtail" arity="2"/>
+      <name name="nthtail" arity="2" since=""/>
       <fsummary>Return the <c>N</c>th tail of a list.</fsummary>
       <type_desc variable="N">0..length(<anno>List</anno>)</type_desc>
       <desc>
@@ -638,7 +638,7 @@ c</pre>
     </func>
 
     <func>
-      <name name="partition" arity="2"/>
+      <name name="partition" arity="2" since=""/>
       <fsummary>Partition a list into two lists based on a predicate.</fsummary>
       <desc>
         <p>Partitions <c><anno>List</anno></c> into two lists, where the first
@@ -658,7 +658,7 @@ c</pre>
     </func>
 
     <func>
-      <name name="prefix" arity="2"/>
+      <name name="prefix" arity="2" since=""/>
       <fsummary>Test for list prefix.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>List1</anno></c> is a prefix of
@@ -667,7 +667,7 @@ c</pre>
     </func>
 
     <func>
-      <name name="reverse" arity="1"/>
+      <name name="reverse" arity="1" since=""/>
       <fsummary>Reverse a list.</fsummary>
       <desc>
         <p>Returns a list with the elements in <c><anno>List1</anno></c>
@@ -676,7 +676,7 @@ c</pre>
     </func>
 
     <func>
-      <name name="reverse" arity="2"/>
+      <name name="reverse" arity="2" since=""/>
       <fsummary>Reverse a list appending a tail.</fsummary>
       <desc>
         <p>Returns a list with the elements in <c><anno>List1</anno></c>
@@ -689,8 +689,20 @@ c</pre>
     </func>
 
     <func>
-      <name name="seq" arity="2"/>
-      <name name="seq" arity="3"/>
+      <name name="search" arity="2" since="OTP 21.0"/>
+      <fsummary>Find the first element that satisfies a predicate.</fsummary>
+      <desc>
+        <p>If there is a <c><anno>Value</anno></c> in <c><anno>List</anno></c>
+          such that <c><anno>Pred</anno>(<anno>Value</anno>)</c> returns
+          <c>true</c>, returns <c>{value, <anno>Value</anno>}</c>
+          for the first such <c><anno>Value</anno></c>,
+          otherwise returns <c>false</c>.</p>
+      </desc>
+    </func>
+
+    <func>
+      <name name="seq" arity="2" since=""/>
+      <name name="seq" arity="3" since=""/>
       <fsummary>Generate a sequence of integers.</fsummary>
       <desc>
         <p>Returns a sequence of integers that starts with
@@ -736,7 +748,7 @@ length(lists:seq(From, To, Incr)) =:= (To - From + Incr) div Incr</code>
     </func>
 
     <func>
-      <name name="sort" arity="1"/>
+      <name name="sort" arity="1" since=""/>
       <fsummary>Sort a list.</fsummary>
       <desc>
         <p>Returns a list containing the sorted elements of
@@ -745,7 +757,7 @@ length(lists:seq(From, To, Incr)) =:= (To - From + Incr) div Incr</code>
     </func>
 
     <func>
-      <name name="sort" arity="2"/>
+      <name name="sort" arity="2" since=""/>
       <fsummary>Sort a list.</fsummary>
       <desc>
         <p>Returns a list containing the sorted elements of
@@ -759,7 +771,7 @@ length(lists:seq(From, To, Incr)) =:= (To - From + Incr) div Incr</code>
     </func>
 
     <func>
-      <name name="split" arity="2"/>
+      <name name="split" arity="2" since=""/>
       <fsummary>Split a list into two lists.</fsummary>
       <type_desc variable="N">0..length(<anno>List1</anno>)</type_desc>
       <desc>
@@ -771,19 +783,7 @@ length(lists:seq(From, To, Incr)) =:= (To - From + Incr) div Incr</code>
     </func>
 
     <func>
-      <name name="search" arity="2"/>
-      <fsummary>Find the first element that satisfies a predicate.</fsummary>
-      <desc>
-        <p>If there is a <c><anno>Value</anno></c> in <c><anno>List</anno></c>
-          such that <c><anno>Pred</anno>(<anno>Value</anno>)</c> returns
-          <c>true</c>, returns <c>{value, <anno>Value</anno>}</c>
-          for the first such <c><anno>Value</anno></c>,
-          otherwise returns <c>false</c>.</p>
-      </desc>
-    </func>
-
-    <func>
-      <name name="splitwith" arity="2"/>
+      <name name="splitwith" arity="2" since=""/>
       <fsummary>Split a list into two lists based on a predicate.</fsummary>
       <desc>
         <p>Partitions <c><anno>List</anno></c> into two lists according to
@@ -804,7 +804,7 @@ splitwith(Pred, List) ->
     </func>
 
     <func>
-      <name name="sublist" arity="2"/>
+      <name name="sublist" arity="2" since=""/>
       <fsummary>Return a sublist of a certain length, starting at the first
         position.</fsummary>
       <desc>
@@ -816,7 +816,7 @@ splitwith(Pred, List) ->
     </func>
 
     <func>
-      <name name="sublist" arity="3"/>
+      <name name="sublist" arity="3" since=""/>
       <fsummary>Return a sublist starting at a specified position and with a
         specified number of elements.</fsummary>
       <type_desc variable="Start">1..(length(<anno>List1</anno>)+1)</type_desc>
@@ -838,7 +838,7 @@ splitwith(Pred, List) ->
     </func>
 
     <func>
-      <name name="subtract" arity="2"/>
+      <name name="subtract" arity="2" since=""/>
       <fsummary>Subtract the element in one list from another list.</fsummary>
       <desc>
         <p>Returns a new list <c><anno>List3</anno></c> that is a copy of
@@ -854,7 +854,7 @@ splitwith(Pred, List) ->
     </func>
 
     <func>
-      <name name="suffix" arity="2"/>
+      <name name="suffix" arity="2" since=""/>
       <fsummary>Test for list suffix.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>List1</anno></c> is a suffix of
@@ -863,7 +863,7 @@ splitwith(Pred, List) ->
     </func>
 
     <func>
-      <name name="sum" arity="1"/>
+      <name name="sum" arity="1" since=""/>
       <fsummary>Return the sum of elements in a list.</fsummary>
       <desc>
         <p>Returns the sum of the elements in <c><anno>List</anno></c>.</p>
@@ -871,7 +871,7 @@ splitwith(Pred, List) ->
     </func>
 
     <func>
-      <name name="takewhile" arity="2"/>
+      <name name="takewhile" arity="2" since=""/>
       <fsummary>Take elements from a list while a predicate is <c>true</c>.
       </fsummary>
       <desc>
@@ -884,7 +884,7 @@ splitwith(Pred, List) ->
     </func>
 
     <func>
-      <name name="ukeymerge" arity="3"/>
+      <name name="ukeymerge" arity="3" since=""/>
       <fsummary>Merge two key-sorted lists of tuples, removing duplicates.
       </fsummary>
       <type_desc variable="N">1..tuple_size(<anno>Tuple</anno>)</type_desc>
@@ -902,7 +902,7 @@ splitwith(Pred, List) ->
     </func>
 
     <func>
-      <name name="ukeysort" arity="2"/>
+      <name name="ukeysort" arity="2" since=""/>
       <fsummary>Sort a list of tuples, removing duplicates.</fsummary>
       <type_desc variable="N">1..tuple_size(<anno>Tuple</anno>)</type_desc>
       <desc>
@@ -914,7 +914,7 @@ splitwith(Pred, List) ->
     </func>
 
     <func>
-      <name name="umerge" arity="1"/>
+      <name name="umerge" arity="1" since=""/>
       <fsummary>Merge a list of sorted lists, removing duplicates.</fsummary>
       <desc>
         <p>Returns the sorted list formed by merging all the sublists
@@ -927,7 +927,7 @@ splitwith(Pred, List) ->
     </func>
 
     <func>
-      <name name="umerge" arity="2"/>
+      <name name="umerge" arity="2" since=""/>
       <fsummary>Merge two sorted lists, removing duplicates.</fsummary>
       <desc>
         <p>Returns the sorted list formed by merging <c><anno>List1</anno></c>
@@ -941,7 +941,7 @@ splitwith(Pred, List) ->
     </func>
 
     <func>
-      <name name="umerge" arity="3"/>
+      <name name="umerge" arity="3" since=""/>
       <fsummary>Merge two sorted lists, removing duplicates.</fsummary>
       <desc>
         <p>Returns the sorted list formed by merging <c><anno>List1</anno></c>
@@ -958,7 +958,7 @@ splitwith(Pred, List) ->
     </func>
 
     <func>
-      <name name="umerge3" arity="3"/>
+      <name name="umerge3" arity="3" since=""/>
       <fsummary>Merge three sorted lists, removing duplicates.</fsummary>
       <desc>
         <p>Returns the sorted list formed by merging <c><anno>List1</anno></c>,
@@ -973,7 +973,7 @@ splitwith(Pred, List) ->
     </func>
 
     <func>
-      <name name="unzip" arity="1"/>
+      <name name="unzip" arity="1" since=""/>
       <fsummary>Unzip a list of two-tuples into two lists.</fsummary>
       <desc>
         <p>"Unzips" a list of two-tuples into two lists, where the first
@@ -983,7 +983,7 @@ splitwith(Pred, List) ->
     </func>
 
     <func>
-      <name name="unzip3" arity="1"/>
+      <name name="unzip3" arity="1" since=""/>
       <fsummary>Unzip a list of three-tuples into three lists.</fsummary>
       <desc>
         <p>"Unzips" a list of three-tuples into three lists, where
@@ -994,7 +994,7 @@ splitwith(Pred, List) ->
     </func>
 
     <func>
-      <name name="usort" arity="1"/>
+      <name name="usort" arity="1" since=""/>
       <fsummary>Sort a list, removing duplicates.</fsummary>
       <desc>
         <p>Returns a list containing the sorted elements of
@@ -1004,7 +1004,7 @@ splitwith(Pred, List) ->
     </func>
 
     <func>
-      <name name="usort" arity="2"/>
+      <name name="usort" arity="2" since=""/>
       <fsummary>Sort a list, removing duplicates.</fsummary>
       <desc>
         <p>Returns a list containing the sorted elements of
@@ -1019,7 +1019,7 @@ splitwith(Pred, List) ->
     </func>
 
     <func>
-      <name name="zip" arity="2"/>
+      <name name="zip" arity="2" since=""/>
       <fsummary>Zip two lists into a list of two-tuples.</fsummary>
       <desc>
         <p>"Zips" two lists of equal length into one list of two-tuples,
@@ -1030,7 +1030,7 @@ splitwith(Pred, List) ->
     </func>
 
     <func>
-      <name name="zip3" arity="3"/>
+      <name name="zip3" arity="3" since=""/>
       <fsummary>Zip three lists into a list of three-tuples.</fsummary>
       <desc>
         <p>"Zips" three lists of equal length into one list of
@@ -1042,7 +1042,7 @@ splitwith(Pred, List) ->
     </func>
 
     <func>
-      <name name="zipwith" arity="3"/>
+      <name name="zipwith" arity="3" since=""/>
       <fsummary>Zip two lists into one list according to a fun.</fsummary>
       <desc>
         <p>Combines the elements of two lists of equal length into one list.
@@ -1059,7 +1059,7 @@ splitwith(Pred, List) ->
     </func>
 
     <func>
-      <name name="zipwith3" arity="4"/>
+      <name name="zipwith3" arity="4" since=""/>
       <fsummary>Zip three lists into one list according to a fun.</fsummary>
       <desc>
         <p>Combines the elements of three lists of equal length into one
diff --git a/lib/stdlib/doc/src/log_mf_h.xml b/lib/stdlib/doc/src/log_mf_h.xml
index edc3d31025..b922006cc0 100644
--- a/lib/stdlib/doc/src/log_mf_h.xml
+++ b/lib/stdlib/doc/src/log_mf_h.xml
@@ -34,7 +34,7 @@
     <rev>A</rev>
     <file>log_mf_h.xml</file>
   </header>
-  <module>log_mf_h</module>
+  <module since="">log_mf_h</module>
   <modulesummary>An event handler that logs events to disk.</modulesummary>
   <description>
     <p>This module is a <c>gen_event</c> handler module that can be installed
@@ -60,8 +60,8 @@
 
   <funcs>
     <func>
-      <name name="init" arity="3"/>
-      <name name="init" arity="4"/>
+      <name name="init" arity="3" since=""/>
+      <name name="init" arity="4" since=""/>
       <fsummary>Initiate the event handler.</fsummary>
       <desc>
         <p>Initiates the event handler. Returns <c><anno>Args</anno></c>, which
diff --git a/lib/stdlib/doc/src/maps.xml b/lib/stdlib/doc/src/maps.xml
index a225dea3b5..8e88882b56 100644
--- a/lib/stdlib/doc/src/maps.xml
+++ b/lib/stdlib/doc/src/maps.xml
@@ -27,7 +27,7 @@
     <date>2014-02-28</date>
     <rev>A</rev>
   </header>
-  <module>maps</module>
+  <module since="OTP 17.0">maps</module>
   <modulesummary>Maps processing functions.</modulesummary>
   <description>
     <p>This module contains functions for maps processing.</p>
@@ -35,9 +35,10 @@
 
   <datatypes>
     <datatype>
-      <name name="iterator"/>
+      <name name="iterator" n_vars="2"/>
       <desc>
-        <p>An iterator representing the key value associations in a map.</p>
+        <p>An iterator representing the associations in a map with keys of type
+          <c><anno>Key</anno></c> and values of type <c><anno>Value</anno></c>.</p>
         <p>Created using <seealso marker="#iterator-1"><c>maps:iterator/1</c></seealso>.</p>
         <p>Consumed by <seealso marker="#next-1"><c>maps:next/1</c></seealso>,
           <seealso marker="#filter-2"><c>maps:filter/2</c></seealso>,
@@ -45,11 +46,15 @@
           <seealso marker="#map-2"><c>maps:map/2</c></seealso>.</p>
       </desc>
     </datatype>
+
+    <datatype>
+      <name name="iterator" n_vars="0"/>
+    </datatype>
   </datatypes>
 
   <funcs>
     <func>
-      <name name="filter" arity="2"/>
+      <name name="filter" arity="2" since="OTP 18.0"/>
       <fsummary>Select pairs that satisfy a predicate.</fsummary>
       <desc>
         <p>Returns a map <c><anno>Map</anno></c> for which predicate
@@ -68,7 +73,7 @@
     </func>
 
     <func>
-      <name name="find" arity="2"/>
+      <name name="find" arity="2" since="OTP 17.0"/>
       <fsummary></fsummary>
       <desc>
         <p>Returns a tuple <c>{ok, Value}</c>, where <c><anno>Value</anno></c>
@@ -87,16 +92,16 @@
     </func>
 
     <func>
-      <name name="fold" arity="3"/>
+      <name name="fold" arity="3" since="OTP 17.0"/>
       <fsummary></fsummary>
       <desc>
-        <p>Calls <c>F(K, V, AccIn)</c> for every <c><anno>K</anno></c> to value
-          <c><anno>V</anno></c> association in <c><anno>MapOrIter</anno></c> in
-          any order. Function <c>fun F/3</c> must return a new
-          accumulator, which is passed to the next successive call.
-          This function returns the final value of the accumulator. The initial
-          accumulator value <c><anno>Init</anno></c> is returned if the map is
-          empty.</p>
+        <p>Calls <c>F(Key, Value, AccIn)</c> for every <c><anno>Key</anno></c>
+          to value <c><anno>Value</anno></c> association in
+          <c><anno>MapOrIter</anno></c> in any order. Function <c>fun F/3</c>
+          must return a new accumulator, which is passed to the next successive
+          call. This function returns the final value of the accumulator.
+          The initial accumulator value <c><anno>Init</anno></c> is returned
+          if the map is empty.</p>
         <p>The call fails with a <c>{badmap,Map}</c> exception if
           <c><anno>MapOrIter</anno></c> is not a map or valid iterator,
           or with <c>badarg</c> if <c><anno>Fun</anno></c> is not a
@@ -111,7 +116,7 @@
     </func>
 
     <func>
-      <name name="from_list" arity="1"/>
+      <name name="from_list" arity="1" since="OTP 17.0"/>
       <fsummary></fsummary>
       <desc>
         <p>Takes a list of key-value tuples elements and builds a map. The
@@ -128,7 +133,7 @@
     </func>
 
     <func>
-      <name name="get" arity="2"/>
+      <name name="get" arity="2" since="OTP 17.0"/>
       <fsummary></fsummary>
       <desc>
         <p>Returns value <c><anno>Value</anno></c> associated with
@@ -147,7 +152,7 @@
     </func>
 
     <func>
-      <name name="get" arity="3"/>
+      <name name="get" arity="3" since="OTP 17.1"/>
       <fsummary></fsummary>
       <desc>
         <p>Returns value <c><anno>Value</anno></c> associated with
@@ -168,7 +173,7 @@ val1
     </func>
 
     <func>
-      <name name="is_key" arity="2"/>
+      <name name="is_key" arity="2" since="OTP 17.0"/>
       <fsummary></fsummary>
       <desc>
         <p>Returns <c>true</c> if map <c><anno>Map</anno></c> contains
@@ -188,7 +193,7 @@ false</code>
     </func>
 
     <func>
-      <name name="iterator" arity="1"/>
+      <name name="iterator" arity="1" since="OTP 21.0"/>
       <fsummary>Create a map iterator.</fsummary>
       <desc>
         <p>Returns a map iterator <c><anno>Iterator</anno></c> that can
@@ -202,19 +207,19 @@ false</code>
         <code type="none">
 > M = #{ a => 1, b => 2 }.
 #{a => 1,b => 2}
-> I = maps:iterator(M).
-[{a,1},{b,2}]
-> {K1, V1, I2} = maps:next(I).
-{a,1,[{b,2}]}
-> {K2, V2, I3} = maps:next(I2).
-{b,2,[]}
+> I = maps:iterator(M), ok.
+ok
+> {K1, V1, I2} = maps:next(I), {K1, V1}.
+{a,1}
+> {K2, V2, I3} = maps:next(I2),{K2, V2}.
+{b,2}
 > maps:next(I3).
 none</code>
       </desc>
     </func>
 
     <func>
-      <name name="keys" arity="1"/>
+      <name name="keys" arity="1" since="OTP 17.0"/>
       <fsummary></fsummary>
       <desc>
         <p>Returns a complete list of keys, in any order, which resides
@@ -230,15 +235,16 @@ none</code>
     </func>
 
     <func>
-      <name name="map" arity="2"/>
+      <name name="map" arity="2" since="OTP 17.0"/>
       <fsummary></fsummary>
       <desc>
         <p>Produces a new map <c><anno>Map</anno></c> by calling function
-          <c>fun F(K, V1)</c> for every <c><anno>K</anno></c> to value
-          <c><anno>V1</anno></c> association in <c><anno>MapOrIter</anno></c> in
-          any order. Function <c>fun F/2</c> must return value
-          <c><anno>V2</anno></c> to be associated with key <c><anno>K</anno></c>
-          for the new map <c><anno>Map</anno></c>.</p>
+          <c>fun F(Key, Value1)</c> for every <c><anno>Key</anno></c> to value
+          <c><anno>Value1</anno></c> association in
+          <c><anno>MapOrIter</anno></c> in any order. Function <c>fun Fun/2</c>
+          must return value <c><anno>Value2</anno></c> to be associated with
+          key <c><anno>Key</anno></c> for the new map
+          <c><anno>Map</anno></c>.</p>
         <p>The call fails with a <c>{badmap,Map}</c> exception if
           <c><anno>MapOrIter</anno></c> is not a map or valid iterator,
           or with <c>badarg</c> if <c><anno>Fun</anno></c> is not a
@@ -253,7 +259,7 @@ none</code>
     </func>
 
     <func>
-      <name name="merge" arity="2"/>
+      <name name="merge" arity="2" since="OTP 17.0"/>
       <fsummary></fsummary>
       <desc>
         <p>Merges two maps into a single map <c><anno>Map3</anno></c>. If two
@@ -271,7 +277,7 @@ none</code>
     </func>
 
     <func>
-      <name name="new" arity="0"/>
+      <name name="new" arity="0" since="OTP 17.0"/>
       <fsummary></fsummary>
       <desc>
         <p>Returns a new empty map.</p>
@@ -283,7 +289,7 @@ none</code>
     </func>
 
     <func>
-      <name name="next" arity="1"/>
+      <name name="next" arity="1" since="OTP 21.0"/>
       <fsummary>Get the next key and value from an iterator.</fsummary>
       <desc>
         <p>Returns the next key-value association in
@@ -298,21 +304,21 @@ none</code>
         <code type="none">
 > Map = #{a => 1, b => 2, c => 3}.
 #{a => 1,b => 2,c => 3}
-> Iter = maps:iterator(Map).
-[{a,1},{b,2},{c,3}]
-> {_, _, Iter1} = maps:next(Iter).
-{a,1,[{b,2},{c,3}]}
-> {_, _, Iter2} = maps:next(Iter1).
-{b,2,[{c,3}]}
-> {_, _, Iter3} = maps:next(Iter2).
-{c,3,[]}
-> maps:next(Iter3).
+> I = maps:iterator(Map), ok.
+ok
+> {K1, V1, I1} = maps:next(I), {K1, V1}.
+{a,1}
+> {K2, V2, I2} = maps:next(I1), {K2, V2}.
+{b,2}
+> {K3, V3, I3} = maps:next(I2), {K3, V3}.
+{c,3}
+> maps:next(I3).
 none</code>
       </desc>
     </func>
 
     <func>
-      <name name="put" arity="3"/>
+      <name name="put" arity="3" since="OTP 17.0"/>
       <fsummary></fsummary>
       <desc>
         <p>Associates <c><anno>Key</anno></c> with value
@@ -336,7 +342,7 @@ none</code>
     </func>
 
     <func>
-      <name name="remove" arity="2"/>
+      <name name="remove" arity="2" since="OTP 17.0"/>
       <fsummary></fsummary>
       <desc>
         <p>Removes the <c><anno>Key</anno></c>, if it exists, and its
@@ -356,7 +362,7 @@ none</code>
     </func>
 
     <func>
-      <name name="size" arity="1"/>
+      <name name="size" arity="1" since="OTP 17.0"/>
       <fsummary></fsummary>
       <desc>
         <p>Returns the number of key-value associations in
@@ -370,7 +376,7 @@ none</code>
     </func>
 
     <func>
-      <name name="take" arity="2"/>
+      <name name="take" arity="2" since="OTP 19.0"/>
       <fsummary></fsummary>
       <desc>
 	<p>The function removes the <c><anno>Key</anno></c>, if it
@@ -395,7 +401,7 @@ error</code>
     </func>
 
     <func>
-      <name name="to_list" arity="1"/>
+      <name name="to_list" arity="1" since="OTP 17.0"/>
       <fsummary></fsummary>
       <desc>
         <p>Returns a list of pairs representing the key-value associations of
@@ -412,7 +418,7 @@ error</code>
     </func>
 
     <func>
-      <name name="update" arity="3"/>
+      <name name="update" arity="3" since="OTP 17.0"/>
       <fsummary></fsummary>
       <desc>
         <p>If <c><anno>Key</anno></c> exists in <c><anno>Map1</anno></c>, the
@@ -432,7 +438,7 @@ error</code>
     </func>
 
     <func>
-      <name name="update_with" arity="3"/>
+      <name name="update_with" arity="3" since="OTP 19.0"/>
       <fsummary></fsummary>
       <desc>
         <p>Update a value in a <c><anno>Map1</anno></c> associated
@@ -451,7 +457,7 @@ error</code>
     </func>
 
     <func>
-      <name name="update_with" arity="4"/>
+      <name name="update_with" arity="4" since="OTP 19.0"/>
       <fsummary></fsummary>
       <desc>
         <p>Update a value in a <c><anno>Map1</anno></c> associated
@@ -471,7 +477,7 @@ error</code>
         </func>
 
     <func>
-      <name name="values" arity="1"/>
+      <name name="values" arity="1" since="OTP 17.0"/>
       <fsummary></fsummary>
       <desc>
         <p>Returns a complete list of values, in arbitrary order, contained in
@@ -487,7 +493,7 @@ error</code>
     </func>
 
     <func>
-      <name name="with" arity="2"/>
+      <name name="with" arity="2" since="OTP 17.3"/>
       <fsummary></fsummary>
       <desc>
         <p>Returns a new map <c><anno>Map2</anno></c> with the keys <c>K1</c>
@@ -504,7 +510,7 @@ error</code>
     </func>
 
     <func>
-      <name name="without" arity="2"/>
+      <name name="without" arity="2" since="OTP 17.0"/>
       <fsummary></fsummary>
       <desc>
         <p>Returns a new map <c><anno>Map2</anno></c> without keys <c>K1</c>
diff --git a/lib/stdlib/doc/src/math.xml b/lib/stdlib/doc/src/math.xml
index b4f096217a..d89310e2c8 100644
--- a/lib/stdlib/doc/src/math.xml
+++ b/lib/stdlib/doc/src/math.xml
@@ -34,7 +34,7 @@
     <rev>B</rev>
     <file>math.xml</file>
   </header>
-  <module>math</module>
+  <module since="">math</module>
   <modulesummary>Mathematical functions.</modulesummary>
   <description>
     <p>This module provides an interface to a number of mathematical
@@ -50,28 +50,28 @@
 
   <funcs>
     <func>
-      <name name="acos" arity="1"/>
-      <name name="acosh" arity="1"/>
-      <name name="asin" arity="1"/>
-      <name name="asinh" arity="1"/>
-      <name name="atan" arity="1"/>
-      <name name="atan2" arity="2"/>
-      <name name="atanh" arity="1"/>
-      <name name="ceil" arity="1"/>
-      <name name="cos" arity="1"/>
-      <name name="cosh" arity="1"/>
-      <name name="exp" arity="1"/>
-      <name name="floor" arity="1"/>
-      <name name="fmod" arity="2"/>
-      <name name="log" arity="1"/>
-      <name name="log10" arity="1"/>
-      <name name="log2" arity="1"/>
-      <name name="pow" arity="2"/>
-      <name name="sin" arity="1"/>
-      <name name="sinh" arity="1"/>
-      <name name="sqrt" arity="1"/>
-      <name name="tan" arity="1"/>
-      <name name="tanh" arity="1"/>
+      <name name="acos" arity="1" since=""/>
+      <name name="acosh" arity="1" since=""/>
+      <name name="asin" arity="1" since=""/>
+      <name name="asinh" arity="1" since=""/>
+      <name name="atan" arity="1" since=""/>
+      <name name="atan2" arity="2" since=""/>
+      <name name="atanh" arity="1" since=""/>
+      <name name="ceil" arity="1" since="OTP 20.0"/>
+      <name name="cos" arity="1" since=""/>
+      <name name="cosh" arity="1" since=""/>
+      <name name="exp" arity="1" since=""/>
+      <name name="floor" arity="1" since="OTP 20.0"/>
+      <name name="fmod" arity="2" since="OTP 20.0"/>
+      <name name="log" arity="1" since=""/>
+      <name name="log10" arity="1" since=""/>
+      <name name="log2" arity="1" since="OTP 18.0"/>
+      <name name="pow" arity="2" since=""/>
+      <name name="sin" arity="1" since=""/>
+      <name name="sinh" arity="1" since=""/>
+      <name name="sqrt" arity="1" since=""/>
+      <name name="tan" arity="1" since=""/>
+      <name name="tanh" arity="1" since=""/>
       <fsummary>Diverse math functions.</fsummary>
       <type variable="X" name_i="6"/>
       <type variable="Y" name_i="6"/>
@@ -82,7 +82,7 @@
     </func>
 
     <func>
-      <name name="erf" arity="1"/>
+      <name name="erf" arity="1" since=""/>
       <fsummary>Error function.</fsummary>
       <desc>
         <p>Returns the error function of <c><anno>X</anno></c>, where:</p>
@@ -92,7 +92,7 @@ erf(X) = 2/sqrt(pi)*integral from 0 to X of exp(-t*t) dt.</pre>
     </func>
 
     <func>
-      <name name="erfc" arity="1"/>
+      <name name="erfc" arity="1" since=""/>
       <fsummary>Another error function.</fsummary>
       <desc>
         <p><c>erfc(X)</c> returns <c>1.0</c> - <c>erf(X)</c>, computed by
@@ -101,7 +101,7 @@ erf(X) = 2/sqrt(pi)*integral from 0 to X of exp(-t*t) dt.</pre>
     </func>
 
     <func>
-      <name name="pi" arity="0"/>
+      <name name="pi" arity="0" since=""/>
       <fsummary>A useful number.</fsummary>
       <desc>
         <p>A useful number.</p>
diff --git a/lib/stdlib/doc/src/ms_transform.xml b/lib/stdlib/doc/src/ms_transform.xml
index 0a05fa37c5..65cc150507 100644
--- a/lib/stdlib/doc/src/ms_transform.xml
+++ b/lib/stdlib/doc/src/ms_transform.xml
@@ -32,7 +32,7 @@
     <rev>C</rev>
     <file>ms_transform.xml</file>
   </header>
-  <module>ms_transform</module>
+  <module since="">ms_transform</module>
   <modulesummary>A parse transformation that translates fun syntax into match
     specifications.</modulesummary>
   <description>
@@ -731,7 +731,7 @@ ets:select(Table, [{{'$1',test,'$2'},[],['$_']}]).</code>
 
   <funcs>
     <func>
-      <name name="format_error" arity="1"/>
+      <name name="format_error" arity="1" since=""/>
       <fsummary>Error formatting function as required by the parse transformation interface.</fsummary>
       <desc>
         <p>Takes an error code returned by one of the other functions
@@ -741,7 +741,7 @@ ets:select(Table, [{{'$1',test,'$2'},[],['$_']}]).</code>
     </func>
 
     <func>
-      <name name="parse_transform" arity="2"/>
+      <name name="parse_transform" arity="2" since=""/>
       <fsummary>Transforms Erlang abstract format containing calls to
         ets/dbg:fun2ms/1 into literal match specifications.</fsummary>
       <type_desc variable="Options">Option list, required but not used.
@@ -762,7 +762,7 @@ ets:select(Table, [{{'$1',test,'$2'},[],['$_']}]).</code>
     </func>
 
     <func>
-      <name name="transform_from_shell" arity="3"/>
+      <name name="transform_from_shell" arity="3" since=""/>
       <fsummary>Used when transforming funs created in the shell into
         match_specifications.</fsummary>
       <type_desc variable="BoundEnvironment">List of variable bindings in the
diff --git a/lib/stdlib/doc/src/notes.xml b/lib/stdlib/doc/src/notes.xml
index 7ba19a98ea..65650a25c7 100644
--- a/lib/stdlib/doc/src/notes.xml
+++ b/lib/stdlib/doc/src/notes.xml
@@ -31,6 +31,87 @@
   </header>
   <p>This document describes the changes made to the STDLIB application.</p>
 
+<section><title>STDLIB 3.8.1</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p>Fixed a performance regression when reading files
+	    opened with the <c>compressed</c> flag.</p>
+          <p>
+	    Own Id: OTP-15706 Aux Id: ERIERL-336 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>STDLIB 3.8</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p> Fix a bug in the Erlang Pretty Printer: long atom
+	    names in combination with <c>&lt;&lt;&gt;&gt;</c> could
+	    cause a crash. </p>
+          <p>
+	    Own Id: OTP-15592 Aux Id: ERL-818 </p>
+        </item>
+        <item>
+	    <p> Fix bugs that could cause wrong results or bad
+	    performance when formatting lists of characters using the
+	    control sequences <c>p</c> or <c>P</c> and limiting the
+	    output with the option <c>chars_limit</c>. </p>
+          <p>
+	    Own Id: OTP-15639</p>
+        </item>
+      </list>
+    </section>
+
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+          <p>
+	    Improved ETS documentation about safe table traversal and
+	    the partially bound key optimization for
+	    <c>ordered_set</c>.</p>
+          <p>
+	    Own Id: OTP-15545 Aux Id: PR-2103, PR-2139 </p>
+        </item>
+        <item>
+	    <p> Optimize <c>calendar:gregorian_days_to_date/1</c>.
+	    </p>
+          <p>
+	    Own Id: OTP-15572 Aux Id: PR-2121 </p>
+        </item>
+        <item>
+	    <p> Optimize functions
+	    <c>calendar:rfc3339_to_system_time()</c> and
+	    <c>calendar:system_time_to_rfc3339()</c>. </p>
+          <p>
+	    Own Id: OTP-15630</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>STDLIB 3.7.1</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p> Optimize pretty printing of terms. The slower
+	    behaviour was introduced in Erlang/OTP 20. </p>
+          <p>
+	    Own Id: OTP-15573 Aux Id: ERIERL-306 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>STDLIB 3.7</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
@@ -3803,7 +3884,7 @@
 	    you use erlang:halt/2 with an integer first argument and
 	    an option list containing {flush,false} as the second
 	    argument. Note that now is flushing not dependant of the
-	    exit code, and you can not only flush async threads
+	    exit code, and you cannot only flush async threads
 	    operations which we deemed as a strange behaviour anyway.
 	    </p>
 	    <p>Also, erlang:halt/1,2 has gotten a new feature: If the
@@ -4317,9 +4398,9 @@
 	    Supervisors should not save child-specs for temporary
 	    processes when they terminate as they should not be
 	    restarted. Saving the temporary child spec will result in
-	    that you can not start a new temporary process with the
+	    that you cannot start a new temporary process with the
 	    same child spec as an already terminated temporary
-	    process. Since R14B02 you can not restart a temporary
+	    process. Since R14B02 you cannot restart a temporary
 	    temporary process as arguments are no longer saved, it
 	    has however always been semantically incorrect to restart
 	    a temporary process. Thanks to Filipe David Manana for
diff --git a/lib/stdlib/doc/src/orddict.xml b/lib/stdlib/doc/src/orddict.xml
index 26bbf499c6..27ccccee7e 100644
--- a/lib/stdlib/doc/src/orddict.xml
+++ b/lib/stdlib/doc/src/orddict.xml
@@ -32,7 +32,7 @@
     <rev>B</rev>
     <file>orddict.xml</file>
   </header>
-  <module>orddict</module>
+  <module since="">orddict</module>
   <modulesummary>Key-value dictionary as ordered list.</modulesummary>
   <description>
     <p>This module provides a <c>Key</c>-<c>Value</c> dictionary.
@@ -61,7 +61,7 @@
 
   <funcs>
     <func>
-      <name name="append" arity="3"/>
+      <name name="append" arity="3" since=""/>
       <fsummary>Append a value to keys in a dictionary.</fsummary>
       <desc>
         <p>Appends a new <c><anno>Value</anno></c> to the current list
@@ -73,7 +73,7 @@
     </func>
 
     <func>
-      <name name="append_list" arity="3"/>
+      <name name="append_list" arity="3" since=""/>
       <fsummary>Append new values to keys in a dictionary.</fsummary>
       <desc>
         <p>Appends a list of values <c><anno>ValList</anno></c> to
@@ -85,7 +85,7 @@
     </func>
 
     <func>
-      <name name="erase" arity="2"/>
+      <name name="erase" arity="2" since=""/>
       <fsummary>Erase a key from a dictionary.</fsummary>
       <desc>
         <p>Erases all items with a specified key from a dictionary.</p>
@@ -93,7 +93,7 @@
     </func>
 
     <func>
-      <name name="fetch" arity="2"/>
+      <name name="fetch" arity="2" since=""/>
       <fsummary>Look up values in a dictionary.</fsummary>
       <desc>
         <p>Returns the value associated with <c><anno>Key</anno></c>
@@ -105,7 +105,7 @@
     </func>
 
     <func>
-      <name name="fetch_keys" arity="1"/>
+      <name name="fetch_keys" arity="1" since=""/>
       <fsummary>Return all keys in a dictionary.</fsummary>
       <desc>
         <p>Returns a list of all keys in a dictionary.</p>
@@ -113,7 +113,7 @@
     </func>
 
     <func>
-      <name name="take" arity="2"/>
+      <name name="take" arity="2" since="OTP 20.0"/>
       <fsummary>Return value and new dictionary without element with this value.</fsummary>
       <desc>
         <p>This function returns value from dictionary and new dictionary without this value.
@@ -122,7 +122,7 @@
     </func>
 
     <func>
-      <name name="filter" arity="2"/>
+      <name name="filter" arity="2" since=""/>
       <fsummary>Select elements that satisfy a predicate.</fsummary>
       <desc>
         <p><c><anno>Orddict2</anno></c> is a dictionary of all keys and values
@@ -133,7 +133,7 @@
     </func>
 
     <func>
-      <name name="find" arity="2"/>
+      <name name="find" arity="2" since=""/>
       <fsummary>Search for a key in a dictionary.</fsummary>
       <desc>
         <p>Searches for a key in a dictionary. Returns
@@ -145,7 +145,7 @@
     </func>
 
     <func>
-      <name name="fold" arity="3"/>
+      <name name="fold" arity="3" since=""/>
       <fsummary>Fold a function over a dictionary.</fsummary>
       <desc>
         <p>Calls <c><anno>Fun</anno></c> on successive keys and values of
@@ -157,7 +157,7 @@
     </func>
 
     <func>
-      <name name="from_list" arity="1"/>
+      <name name="from_list" arity="1" since=""/>
       <fsummary>Convert a list of pairs to a dictionary.</fsummary>
       <desc>
         <p>Converts the <c><anno>Key</anno></c>-<c><anno>Value</anno></c> list
@@ -166,7 +166,7 @@
     </func>
 
     <func>
-      <name name="is_empty" arity="1"/>
+      <name name="is_empty" arity="1" since="OTP 17.0"/>
       <fsummary>Return true if the dictionary is empty.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>Orddict</anno></c> has no elements,
@@ -175,7 +175,7 @@
     </func>
 
     <func>
-      <name name="is_key" arity="2"/>
+      <name name="is_key" arity="2" since=""/>
       <fsummary>Test if a key is in a dictionary.</fsummary>
       <desc>
         <p>Tests if <c><anno>Key</anno></c> is contained in
@@ -184,7 +184,7 @@
     </func>
 
     <func>
-      <name name="map" arity="2"/>
+      <name name="map" arity="2" since=""/>
       <fsummary>Map a function over a dictionary.</fsummary>
       <desc>
         <p>Calls <c><anno>Fun</anno></c> on successive keys and values of
@@ -193,7 +193,7 @@
     </func>
 
     <func>
-      <name name="merge" arity="3"/>
+      <name name="merge" arity="3" since=""/>
       <fsummary>Merge two dictionaries.</fsummary>
       <desc>
         <p>Merges two dictionaries, <c><anno>Orddict1</anno></c> and
@@ -212,7 +212,7 @@ merge(Fun, D1, D2) ->
     </func>
 
     <func>
-      <name name="new" arity="0"/>
+      <name name="new" arity="0" since=""/>
       <fsummary>Create a dictionary.</fsummary>
       <desc>
         <p>Creates a new dictionary.</p>
@@ -220,7 +220,7 @@ merge(Fun, D1, D2) ->
     </func>
 
     <func>
-      <name name="size" arity="1"/>
+      <name name="size" arity="1" since=""/>
       <fsummary>Return the number of elements in an ordered dictionary.
       </fsummary>
       <desc>
@@ -229,7 +229,7 @@ merge(Fun, D1, D2) ->
     </func>
 
     <func>
-      <name name="store" arity="3"/>
+      <name name="store" arity="3" since=""/>
       <fsummary>Store a value in a dictionary.</fsummary>
       <desc>
         <p>Stores a <c><anno>Key</anno></c>-<c><anno>Value</anno></c> pair in a
@@ -240,7 +240,7 @@ merge(Fun, D1, D2) ->
     </func>
 
     <func>
-      <name name="to_list" arity="1"/>
+      <name name="to_list" arity="1" since=""/>
       <fsummary>Convert a dictionary to a list of pairs.</fsummary>
       <desc>
         <p>Converts a dictionary to a list representation.</p>
@@ -248,7 +248,7 @@ merge(Fun, D1, D2) ->
     </func>
 
     <func>
-      <name name="update" arity="3"/>
+      <name name="update" arity="3" since=""/>
       <fsummary>Update a value in a dictionary.</fsummary>
       <desc>
         <p>Updates a value in a dictionary by calling <c><anno>Fun</anno></c>
@@ -258,7 +258,7 @@ merge(Fun, D1, D2) ->
     </func>
 
     <func>
-      <name name="update" arity="4"/>
+      <name name="update" arity="4" since=""/>
       <fsummary>Update a value in a dictionary.</fsummary>
       <desc>
         <p>Updates a value in a dictionary by calling <c><anno>Fun</anno></c>
@@ -273,7 +273,7 @@ append(Key, Val, D) ->
     </func>
 
     <func>
-      <name name="update_counter" arity="3"/>
+      <name name="update_counter" arity="3" since=""/>
       <fsummary>Increment a value in a dictionary.</fsummary>
       <desc>
         <p>Adds <c><anno>Increment</anno></c> to the value associated with
diff --git a/lib/stdlib/doc/src/ordsets.xml b/lib/stdlib/doc/src/ordsets.xml
index 11f98c8fb7..fbe334c009 100644
--- a/lib/stdlib/doc/src/ordsets.xml
+++ b/lib/stdlib/doc/src/ordsets.xml
@@ -32,7 +32,7 @@
     <rev>A</rev>
     <file>ordsets.xml</file>
   </header>
-  <module>ordsets</module>
+  <module since="">ordsets</module>
   <modulesummary>Functions for manipulating sets as ordered lists.
   </modulesummary>
   <description>
@@ -60,7 +60,7 @@
 
   <funcs>
     <func>
-      <name name="add_element" arity="2"/>
+      <name name="add_element" arity="2" since=""/>
       <fsummary>Add an element to an <c>Ordset</c>.</fsummary>
       <desc>
         <p>Returns a new ordered set formed from <c><anno>Ordset1</anno></c>
@@ -69,7 +69,7 @@
     </func>
 
     <func>
-      <name name="del_element" arity="2"/>
+      <name name="del_element" arity="2" since=""/>
       <fsummary>Remove an element from an <c>Ordset</c>.</fsummary>
       <desc>
         <p>Returns <c><anno>Ordset1</anno></c>, but with
@@ -78,7 +78,7 @@
     </func>
 
     <func>
-      <name name="filter" arity="2"/>
+      <name name="filter" arity="2" since=""/>
       <fsummary>Filter set elements.</fsummary>
       <desc>
         <p>Filters elements in <c><anno>Ordset1</anno></c> with boolean function
@@ -87,7 +87,7 @@
     </func>
 
     <func>
-      <name name="fold" arity="3"/>
+      <name name="fold" arity="3" since=""/>
       <fsummary>Fold over set elements.</fsummary>
       <desc>
         <p>Folds <c><anno>Function</anno></c> over every element in
@@ -97,7 +97,7 @@
     </func>
 
     <func>
-      <name name="from_list" arity="1"/>
+      <name name="from_list" arity="1" since=""/>
       <fsummary>Convert a list into an <c>Ordset</c>.</fsummary>
       <desc>
         <p>Returns an ordered set of the elements in <c><anno>List</anno></c>.
@@ -106,7 +106,7 @@
     </func>
 
     <func>
-      <name name="intersection" arity="1"/>
+      <name name="intersection" arity="1" since=""/>
       <fsummary>Return the intersection of a list of <c>Ordsets</c></fsummary>
       <desc>
         <p>Returns the intersection of the non-empty list of sets.</p>
@@ -114,7 +114,7 @@
     </func>
 
     <func>
-      <name name="intersection" arity="2"/>
+      <name name="intersection" arity="2" since=""/>
       <fsummary>Return the intersection of two <c>Ordsets</c>.</fsummary>
       <desc>
         <p>Returns the intersection of <c><anno>Ordset1</anno></c> and
@@ -123,7 +123,7 @@
     </func>
 
     <func>
-      <name name="is_disjoint" arity="2"/>
+      <name name="is_disjoint" arity="2" since=""/>
       <fsummary>Check whether two <c>Ordsets</c> are disjoint.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>Ordset1</anno></c> and
@@ -133,7 +133,7 @@
     </func>
 
     <func>
-      <name name="is_element" arity="2"/>
+      <name name="is_element" arity="2" since=""/>
       <fsummary>Test for membership of an <c>Ordset</c>.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>Element</anno></c> is an element of
@@ -142,7 +142,7 @@
     </func>
 
     <func>
-      <name name="is_empty" arity="1"/>
+      <name name="is_empty" arity="1" since="OTP 21.0"/>
       <fsummary>Test for empty set.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>Ordset</anno></c> is an empty set,
@@ -151,7 +151,7 @@
     </func>
 
     <func>
-      <name name="is_set" arity="1"/>
+      <name name="is_set" arity="1" since=""/>
       <fsummary>Test for an <c>Ordset</c>.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>Ordset</anno></c> is an ordered set
@@ -160,7 +160,7 @@
     </func>
 
     <func>
-      <name name="is_subset" arity="2"/>
+      <name name="is_subset" arity="2" since=""/>
       <fsummary>Test for subset.</fsummary>
       <desc>
         <p>Returns <c>true</c> when every element of <c><anno>Ordset1</anno></c>
@@ -170,7 +170,7 @@
     </func>
 
     <func>
-      <name name="new" arity="0"/>
+      <name name="new" arity="0" since=""/>
       <fsummary>Return an empty set.</fsummary>
       <desc>
         <p>Returns a new empty ordered set.</p>
@@ -178,7 +178,7 @@
     </func>
 
     <func>
-      <name name="size" arity="1"/>
+      <name name="size" arity="1" since=""/>
       <fsummary>Return the number of elements in a set.</fsummary>
       <desc>
         <p>Returns the number of elements in <c><anno>Ordset</anno></c>.</p>
@@ -186,7 +186,7 @@
     </func>
 
     <func>
-      <name name="subtract" arity="2"/>
+      <name name="subtract" arity="2" since=""/>
       <fsummary>Return the difference of two <c>Ordsets</c>.</fsummary>
       <desc>
         <p>Returns only the elements of <c><anno>Ordset1</anno></c> that are not
@@ -195,7 +195,7 @@
     </func>
 
     <func>
-      <name name="to_list" arity="1"/>
+      <name name="to_list" arity="1" since=""/>
       <fsummary>Convert an <c>Ordset</c> into a list.</fsummary>
       <desc>
         <p>Returns the elements of <c><anno>Ordset</anno></c> as a list.</p>
@@ -203,7 +203,7 @@
     </func>
 
     <func>
-      <name name="union" arity="1"/>
+      <name name="union" arity="1" since=""/>
       <fsummary>Return the union of a list of <c>Ordsets</c>.</fsummary>
       <desc>
         <p>Returns the merged (union) set of the list of sets.</p>
@@ -211,7 +211,7 @@
     </func>
 
     <func>
-      <name name="union" arity="2"/>
+      <name name="union" arity="2" since=""/>
       <fsummary>Return the union of two <c>Ordsets</c>.</fsummary>
       <desc>
         <p>Returns the merged (union) set of <c><anno>Ordset1</anno></c> and
diff --git a/lib/stdlib/doc/src/pool.xml b/lib/stdlib/doc/src/pool.xml
index 05d12ade28..675ee08bfb 100644
--- a/lib/stdlib/doc/src/pool.xml
+++ b/lib/stdlib/doc/src/pool.xml
@@ -28,7 +28,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>pool</module>
+  <module since="">pool</module>
   <modulesummary>Load distribution facility.</modulesummary>
   <description>
     <p>This module can be used to run a set of Erlang nodes as a pool
@@ -54,7 +54,7 @@
 
   <funcs>
     <func>
-      <name name="attach" arity="1"/>
+      <name name="attach" arity="1" since=""/>
       <fsummary>Ensure that a pool master is running.</fsummary>
       <desc>
         <p>Ensures that a pool master is running and includes
@@ -63,7 +63,7 @@
     </func>
 
     <func>
-      <name name="get_node" arity="0"/>
+      <name name="get_node" arity="0" since=""/>
       <fsummary>Return the node with the expected lowest future load.</fsummary>
       <desc>
         <p>Returns the node with the expected lowest future load.</p>
@@ -71,7 +71,7 @@
     </func>
 
     <func>
-      <name name="get_nodes" arity="0"/>
+      <name name="get_nodes" arity="0" since=""/>
       <fsummary>Return a list of the current member nodes of the pool.
       </fsummary>
       <desc>
@@ -80,7 +80,7 @@
     </func>
 
     <func>
-      <name name="pspawn" arity="3"/>
+      <name name="pspawn" arity="3" since=""/>
       <fsummary>Spawn a process on the pool node with expected lowest future
         load.</fsummary>
       <desc>
@@ -90,7 +90,7 @@
     </func>
 
     <func>
-      <name name="pspawn_link" arity="3"/>
+      <name name="pspawn_link" arity="3" since=""/>
       <fsummary>Spawn and link to a process on the pool node with expected
         lowest future load.</fsummary>
       <desc>
@@ -100,8 +100,8 @@
     </func>
 
     <func>
-      <name name="start" arity="1"/>
-      <name name="start" arity="2"/>
+      <name name="start" arity="1" since=""/>
+      <name name="start" arity="2" since=""/>
       <fsummary>>Start a new pool.</fsummary>
       <desc>
         <p>Starts a new pool. The file <c>.hosts.erlang</c> is read to
@@ -122,7 +122,7 @@
     </func>
 
     <func>
-      <name name="stop" arity="0"/>
+      <name name="stop" arity="0" since=""/>
       <fsummary>Stop the pool and kill all the slave nodes.</fsummary>
       <desc>
         <p>Stops the pool and kills all the slave nodes.</p>
diff --git a/lib/stdlib/doc/src/proc_lib.xml b/lib/stdlib/doc/src/proc_lib.xml
index b85fab67d5..bb983903a9 100644
--- a/lib/stdlib/doc/src/proc_lib.xml
+++ b/lib/stdlib/doc/src/proc_lib.xml
@@ -28,7 +28,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>proc_lib</module>
+  <module since="">proc_lib</module>
   <modulesummary>Functions for asynchronous and synchronous start of processes
     adhering to the OTP design principles.</modulesummary>
   <description>
@@ -102,7 +102,7 @@
 
   <funcs>
     <func>
-      <name name="format" arity="1"/>
+      <name name="format" arity="1" since=""/>
       <fsummary>Format a crash report.</fsummary>
       <desc>
         <p>Equivalent to <seealso marker="#format/2">
@@ -111,7 +111,7 @@
     </func>
 
     <func>
-      <name name="format" arity="2"/>
+      <name name="format" arity="2" since="OTP R16B"/>
       <fsummary>Format a crash report.</fsummary>
       <desc>
 	<note>
@@ -138,7 +138,7 @@
     </func>
 
     <func>
-      <name name="format" arity="3"/>
+      <name name="format" arity="3" since="OTP 18.1"/>
       <fsummary>Format a crash report.</fsummary>
       <desc>
 	<note>
@@ -162,11 +162,11 @@
     </func>
 
     <func>
-      <name name="hibernate" arity="3"/>
+      <name name="hibernate" arity="3" since=""/>
       <fsummary>Hibernate a process until a message is sent to it.</fsummary>
       <desc>
         <p>This function does the same as (and does call) the
-          <seealso marker="erts:erlang#erlang:hibernate/3">
+          <seealso marker="erts:erlang#hibernate/3">
           <c>hibernate/3</c></seealso> BIF,
           but ensures that exception handling and logging continues to
           work as expected when the process wakes up.</p>
@@ -176,8 +176,8 @@
     </func>
 
     <func>
-      <name name="init_ack" arity="1"/>
-      <name name="init_ack" arity="2"/>
+      <name name="init_ack" arity="1" since=""/>
+      <name name="init_ack" arity="2" since=""/>
       <fsummary>Used by a process when it has started.</fsummary>
       <desc>
         <p>This function must be used by a process that has been started by
@@ -214,7 +214,7 @@ init(Parent) ->
     </func>
 
     <func>
-      <name name="initial_call" arity="1"/>
+      <name name="initial_call" arity="1" since=""/>
       <fsummary>Extract the initial call of a <c>proc_lib</c>spawned process.
       </fsummary>
       <desc>
@@ -244,10 +244,10 @@ init(Parent) ->
     </func>
 
     <func>
-      <name name="spawn" arity="1"/>
-      <name name="spawn" arity="2"/>
-      <name name="spawn" arity="3"/>
-      <name name="spawn" arity="4"/>
+      <name name="spawn" arity="1" since=""/>
+      <name name="spawn" arity="2" since=""/>
+      <name name="spawn" arity="3" since=""/>
+      <name name="spawn" arity="4" since=""/>
       <fsummary>Spawn a new process.</fsummary>
       <type variable="Node"/>
       <type variable="Fun" name_i="1"/>
@@ -262,10 +262,10 @@ init(Parent) ->
     </func>
 
     <func>
-      <name name="spawn_link" arity="1"/>
-      <name name="spawn_link" arity="2"/>
-      <name name="spawn_link" arity="3"/>
-      <name name="spawn_link" arity="4"/>
+      <name name="spawn_link" arity="1" since=""/>
+      <name name="spawn_link" arity="2" since=""/>
+      <name name="spawn_link" arity="3" since=""/>
+      <name name="spawn_link" arity="4" since=""/>
       <fsummary>Spawn and link to a new process.</fsummary>
       <type variable="Node"/>
       <type variable="Fun" name_i="1"/>
@@ -281,10 +281,10 @@ init(Parent) ->
     </func>
 
     <func>
-      <name name="spawn_opt" arity="2"/>
-      <name name="spawn_opt" arity="3"/>
-      <name name="spawn_opt" arity="4"/>
-      <name name="spawn_opt" arity="5"/>
+      <name name="spawn_opt" arity="2" since=""/>
+      <name name="spawn_opt" arity="3" since=""/>
+      <name name="spawn_opt" arity="4" since=""/>
+      <name name="spawn_opt" arity="5" since=""/>
       <fsummary>Spawn a new process with specified options.</fsummary>
       <type variable="Node"/>
       <type variable="Fun" name_i="1"/>
@@ -306,12 +306,12 @@ init(Parent) ->
     </func>
 
     <func>
-      <name name="start" arity="3"/>
-      <name name="start" arity="4"/>
-      <name name="start" arity="5"/>
-      <name name="start_link" arity="3"/>
-      <name name="start_link" arity="4"/>
-      <name name="start_link" arity="5"/>
+      <name name="start" arity="3" since=""/>
+      <name name="start" arity="4" since=""/>
+      <name name="start" arity="5" since=""/>
+      <name name="start_link" arity="3" since=""/>
+      <name name="start_link" arity="4" since=""/>
+      <name name="start_link" arity="5" since=""/>
       <fsummary>Start a new process synchronously.</fsummary>
       <desc>
         <p>Starts a new process synchronously. Spawns the process and
@@ -341,7 +341,7 @@ init(Parent) ->
     </func>
 
     <func>
-      <name name="stop" arity="1"/>
+      <name name="stop" arity="1" since="OTP 18.0"/>
       <fsummary>Terminate a process synchronously.</fsummary>
       <type variable="Process"/>
       <desc>
@@ -351,7 +351,7 @@ init(Parent) ->
     </func>
 
     <func>
-      <name name="stop" arity="3"/>
+      <name name="stop" arity="3" since="OTP 18.0"/>
       <fsummary>Terminate a process synchronously.</fsummary>
       <type variable="Process"/>
       <type variable="Reason"/>
@@ -375,7 +375,7 @@ init(Parent) ->
     </func>
 
     <func>
-      <name name="translate_initial_call" arity="1"/>
+      <name name="translate_initial_call" arity="1" since=""/>
       <fsummary>Extract and translate the initial call of a
         <c>proc_lib</c>spawned process.</fsummary>
       <desc>
diff --git a/lib/stdlib/doc/src/proplists.xml b/lib/stdlib/doc/src/proplists.xml
index f9a54bf804..4465103469 100644
--- a/lib/stdlib/doc/src/proplists.xml
+++ b/lib/stdlib/doc/src/proplists.xml
@@ -32,7 +32,7 @@
     <rev>A</rev>
     <file>proplists.xml</file>
   </header>
-  <module>proplists</module>
+  <module since="">proplists</module>
   <modulesummary>Support functions for property lists.</modulesummary>
   <description>
     <p>Property lists are ordinary lists containing entries in the form
@@ -57,11 +57,16 @@
     <datatype>
       <name name="property"/>
     </datatype>
+
+    <datatype>
+      <name name="proplist"/>
+    </datatype>
+
   </datatypes>
 
   <funcs>
     <func>
-      <name name="append_values" arity="2"/>
+      <name name="append_values" arity="2" since=""/>
       <fsummary></fsummary>
       <desc>
         <p>Similar to
@@ -79,7 +84,7 @@ append_values(a, [{a, [1,2]}, {b, 0}, {a, 3}, {c, -1}, {a, [4]}])</code>
     </func>
 
     <func>
-      <name name="compact" arity="1"/>
+      <name name="compact" arity="1" since=""/>
       <fsummary></fsummary>
       <desc>
         <p>Minimizes the representation of all entries in the list. This is
@@ -91,7 +96,7 @@ append_values(a, [{a, [1,2]}, {b, 0}, {a, 3}, {c, -1}, {a, [4]}])</code>
     </func>
 
     <func>
-      <name name="delete" arity="2"/>
+      <name name="delete" arity="2" since=""/>
       <fsummary></fsummary>
       <desc>
         <p>Deletes all entries associated with <c><anno>Key</anno></c> from
@@ -100,7 +105,7 @@ append_values(a, [{a, [1,2]}, {b, 0}, {a, 3}, {c, -1}, {a, [4]}])</code>
     </func>
 
     <func>
-      <name name="expand" arity="2"/>
+      <name name="expand" arity="2" since=""/>
       <fsummary></fsummary>
       <desc>
         <p>Expands particular properties to corresponding sets of
@@ -133,7 +138,7 @@ expand([{{foo, true}, [bar, baz]}], [{foo, false}, fie, foo, fum])</code>
     </func>
 
     <func>
-      <name name="get_all_values" arity="2"/>
+      <name name="get_all_values" arity="2" since=""/>
       <fsummary></fsummary>
       <desc>
         <p>Similar to 
@@ -145,7 +150,7 @@ expand([{{foo, true}, [bar, baz]}], [{foo, false}, fie, foo, fum])</code>
     </func>
 
     <func>
-      <name name="get_bool" arity="2"/>
+      <name name="get_bool" arity="2" since=""/>
       <fsummary></fsummary>
       <desc>
         <p>Returns the value of a boolean key/value option. If
@@ -159,7 +164,7 @@ expand([{{foo, true}, [bar, baz]}], [{foo, false}, fie, foo, fum])</code>
     </func>
 
     <func>
-      <name name="get_keys" arity="1"/>
+      <name name="get_keys" arity="1" since=""/>
       <fsummary></fsummary>
       <desc>
         <p>Returns an unordered list of the keys used in
@@ -168,7 +173,7 @@ expand([{{foo, true}, [bar, baz]}], [{foo, false}, fie, foo, fum])</code>
     </func>
 
     <func>
-      <name name="get_value" arity="2"/>
+      <name name="get_value" arity="2" since=""/>
       <fsummary></fsummary>
       <desc>
         <p>Equivalent to
@@ -177,7 +182,7 @@ expand([{{foo, true}, [bar, baz]}], [{foo, false}, fie, foo, fum])</code>
     </func>
 
     <func>
-      <name name="get_value" arity="3"/>
+      <name name="get_value" arity="3" since=""/>
       <fsummary></fsummary>
       <desc>
         <p>Returns the value of a simple key/value property in
@@ -194,7 +199,7 @@ expand([{{foo, true}, [bar, baz]}], [{foo, false}, fie, foo, fum])</code>
     </func>
 
     <func>
-      <name name="is_defined" arity="2"/>
+      <name name="is_defined" arity="2" since=""/>
       <fsummary></fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>List</anno></c> contains at least
@@ -204,7 +209,7 @@ expand([{{foo, true}, [bar, baz]}], [{foo, false}, fie, foo, fum])</code>
     </func>
 
     <func>
-      <name name="lookup" arity="2"/>
+      <name name="lookup" arity="2" since=""/>
       <fsummary></fsummary>
       <desc>
         <p>Returns the first entry associated with <c><anno>Key</anno></c> in
@@ -219,7 +224,7 @@ expand([{{foo, true}, [bar, baz]}], [{foo, false}, fie, foo, fum])</code>
     </func>
 
     <func>
-      <name name="lookup_all" arity="2"/>
+      <name name="lookup_all" arity="2" since=""/>
       <fsummary></fsummary>
       <desc>
         <p>Returns the list of all entries associated with
@@ -231,7 +236,7 @@ expand([{{foo, true}, [bar, baz]}], [{foo, false}, fie, foo, fum])</code>
     </func>
 
     <func>
-      <name name="normalize" arity="2"/>
+      <name name="normalize" arity="2" since=""/>
       <fsummary></fsummary>
       <desc>
         <p>Passes <c><anno>ListIn</anno></c> through a sequence of
@@ -263,7 +268,7 @@ expand([{{foo, true}, [bar, baz]}], [{foo, false}, fie, foo, fum])</code>
     </func>
 
     <func>
-      <name name="property" arity="1"/>
+      <name name="property" arity="1" since=""/>
       <fsummary></fsummary>
       <desc>
         <p>Creates a normal form (minimal) representation of a property. If
@@ -276,7 +281,7 @@ expand([{{foo, true}, [bar, baz]}], [{foo, false}, fie, foo, fum])</code>
     </func>
 
     <func>
-      <name name="property" arity="2"/>
+      <name name="property" arity="2" since=""/>
       <fsummary></fsummary>
       <desc>
         <p>Creates a normal form (minimal) representation of a simple key/value
@@ -289,7 +294,7 @@ expand([{{foo, true}, [bar, baz]}], [{foo, false}, fie, foo, fum])</code>
     </func>
 
     <func>
-      <name name="split" arity="2"/>
+      <name name="split" arity="2" since=""/>
       <fsummary></fsummary>
       <desc>
         <p>Partitions <c><anno>List</anno></c> into a list of sublists and a
@@ -310,7 +315,7 @@ split([{c, 2}, {e, 1}, a, {c, 3, 4}, d, {b, 5}, b], [a, b, c])</code>
     </func>
 
     <func>
-      <name name="substitute_aliases" arity="2"/>
+      <name name="substitute_aliases" arity="2" since=""/>
       <fsummary></fsummary>
       <desc>
         <p>Substitutes keys of properties. For each entry in
@@ -332,7 +337,7 @@ split([{c, 2}, {e, 1}, a, {c, 3, 4}, d, {b, 5}, b], [a, b, c])</code>
     </func>
 
     <func>
-      <name name="substitute_negations" arity="2"/>
+      <name name="substitute_negations" arity="2" since=""/>
       <fsummary></fsummary>
       <desc>
         <p>Substitutes keys of boolean-valued properties and
@@ -360,7 +365,7 @@ split([{c, 2}, {e, 1}, a, {c, 3, 4}, d, {b, 5}, b], [a, b, c])</code>
     </func>
 
     <func>
-      <name name="unfold" arity="1"/>
+      <name name="unfold" arity="1" since=""/>
       <fsummary></fsummary>
       <desc>
         <p>Unfolds all occurrences of atoms in <c><anno>ListIn</anno></c> to
diff --git a/lib/stdlib/doc/src/qlc.xml b/lib/stdlib/doc/src/qlc.xml
index fe14a6334c..fe60c2e9bb 100644
--- a/lib/stdlib/doc/src/qlc.xml
+++ b/lib/stdlib/doc/src/qlc.xml
@@ -32,7 +32,7 @@
     <rev>PA1</rev>
     <file>qlc.xml</file>
   </header>
-  <module>qlc</module>
+  <module since="">qlc</module>
   <modulesummary>Query interface to Mnesia, ETS, Dets, and so on.
   </modulesummary>
   <description>
@@ -720,7 +720,7 @@ ets:match_spec_run(ets:lookup(86033, {2,2}),
 
   <funcs>
     <func>
-      <name name="append" arity="1"/>
+      <name name="append" arity="1" since=""/>
       <fsummary>Return a query handle.</fsummary>
       <desc>
         <p>Returns a query handle. When evaluating query handle
@@ -731,7 +731,7 @@ ets:match_spec_run(ets:lookup(86033, {2,2}),
     </func>
 
     <func>
-      <name name="append" arity="2"/>
+      <name name="append" arity="2" since=""/>
       <fsummary>Return a query handle.</fsummary>
       <desc>
         <p>Returns a query handle. When evaluating query handle
@@ -744,8 +744,8 @@ ets:match_spec_run(ets:lookup(86033, {2,2}),
     </func>
 
     <func>
-      <name name="cursor" arity="1"/>
-      <name name="cursor" arity="2"/>
+      <name name="cursor" arity="1" since=""/>
+      <name name="cursor" arity="2" since=""/>
       <fsummary>Create a query cursor.</fsummary>
       <desc>
         <p>Creates a query cursor and
@@ -777,7 +777,7 @@ ok</pre>
     </func>
 
     <func>
-      <name name="delete_cursor" arity="1"/>
+      <name name="delete_cursor" arity="1" since=""/>
       <fsummary>Delete a query cursor.</fsummary>
       <desc>
         <p>Deletes a query cursor. Only the owner of the cursor can
@@ -786,10 +786,10 @@ ok</pre>
     </func>
 
     <func>
-      <name name="e" arity="1"/>
-      <name name="e" arity="2"/>
-      <name name="eval" arity="1"/>
-      <name name="eval" arity="2"/>
+      <name name="e" arity="1" since=""/>
+      <name name="e" arity="2" since=""/>
+      <name name="eval" arity="1" since=""/>
+      <name name="eval" arity="2" since=""/>
       <fsummary>Return all answers to a query.</fsummary>
       <desc>
         <p>Evaluates a query handle in the
@@ -805,8 +805,8 @@ ok</pre>
     </func>
 
     <func>
-      <name name="fold" arity="3"/>
-      <name name="fold" arity="4"/>
+      <name name="fold" arity="3" since=""/>
+      <name name="fold" arity="4" since=""/>
       <fsummary>Fold a function over the answers to a query.</fsummary>
       <desc>
         <p>Calls <c><anno>Function</anno></c> on successive answers to
@@ -830,7 +830,7 @@ ok</pre>
     </func>
 
     <func>
-      <name name="format_error" arity="1"/>
+      <name name="format_error" arity="1" since=""/>
       <fsummary>Return an English description of a an error tuple.</fsummary>
       <desc>
         <p>Returns a descriptive string in English of an error tuple
@@ -841,8 +841,8 @@ ok</pre>
     </func>
 
     <func>
-      <name name="info" arity="1"/>
-      <name name="info" arity="2"/>
+      <name name="info" arity="1" since=""/>
+      <name name="info" arity="2" since=""/>
       <fsummary>Return code describing a query handle.</fsummary>
       <desc>
         <p>Returns information about a
@@ -946,8 +946,8 @@ end</pre>
     </func>
 
     <func>
-      <name name="keysort" arity="2"/>
-      <name name="keysort" arity="3"/>
+      <name name="keysort" arity="2" since=""/>
+      <name name="keysort" arity="3" since=""/>
       <fsummary>Return a query handle.</fsummary>
       <desc>
         <p>Returns a query handle. When evaluating query handle
@@ -967,8 +967,8 @@ end</pre>
     </func>
 
     <func>
-      <name name="next_answers" arity="1"/>
-      <name name="next_answers" arity="2"/>
+      <name name="next_answers" arity="1" since=""/>
+      <name name="next_answers" arity="2" since=""/>
       <fsummary>Return some or all answers to a query.</fsummary>
       <desc>
         <p>Returns some or all of the remaining answers to a query
@@ -983,8 +983,8 @@ end</pre>
     </func>
 
     <func>
-      <name name="q" arity="1"/>
-      <name name="q" arity="2"/>
+      <name name="q" arity="1" since=""/>
+      <name name="q" arity="2" since=""/>
       <fsummary>Return a handle for a query list comprehension.</fsummary>
       <desc>
         <p>Returns a query handle for a QLC.
@@ -1188,8 +1188,8 @@ ets:match_spec_run(
     </func>
 
     <func>
-      <name name="sort" arity="1"/>
-      <name name="sort" arity="2"/>
+      <name name="sort" arity="1" since=""/>
+      <name name="sort" arity="2" since=""/>
       <fsummary>Return a query handle.</fsummary>
       <desc>
         <p>Returns a query handle. When evaluating query handle
@@ -1208,9 +1208,9 @@ ets:match_spec_run(
     </func>
 
     <func>
-      <name name="string_to_handle" arity="1"/>
-      <name name="string_to_handle" arity="2"/>
-      <name name="string_to_handle" arity="3"/>
+      <name name="string_to_handle" arity="1" since=""/>
+      <name name="string_to_handle" arity="2" since=""/>
+      <name name="string_to_handle" arity="3" since=""/>
       <fsummary>Return a handle for a query list comprehension.</fsummary>
       <desc>
         <p>A string version of <seealso marker="#q/1"><c>q/1,2</c></seealso>.
@@ -1238,7 +1238,7 @@ ets:match_spec_run(
     </func>
 
     <func>
-      <name name="table" arity="2"/>
+      <name name="table" arity="2" since=""/>
       <fsummary>Return a query handle for a table.</fsummary>
       <desc>
         <p>Returns a query handle for a QLC table.
diff --git a/lib/stdlib/doc/src/queue.xml b/lib/stdlib/doc/src/queue.xml
index 9f3aff03a3..83a8afea81 100644
--- a/lib/stdlib/doc/src/queue.xml
+++ b/lib/stdlib/doc/src/queue.xml
@@ -32,7 +32,7 @@
     <rev>B</rev>
     <file>queue.xml</file>
   </header>
-  <module>queue</module>
+  <module since="">queue</module>
   <modulesummary>Abstract data type for FIFO queues.</modulesummary>
   <description>
     <p>This module provides (double-ended) FIFO queues
@@ -113,7 +113,7 @@
 
   <funcs>
     <func>
-      <name name="filter" arity="2"/>
+      <name name="filter" arity="2" since=""/>
       <fsummary>Filter a queue.</fsummary>
       <desc>
         <p>Returns a queue <c><anno>Q2</anno></c> that is the result of calling
@@ -134,7 +134,7 @@
     </func>
 
     <func>
-      <name name="from_list" arity="1"/>
+      <name name="from_list" arity="1" since=""/>
       <fsummary>Convert a list to a queue.</fsummary>
       <desc>
         <p>Returns a queue containing the items in <c><anno>L</anno></c> in the
@@ -144,7 +144,7 @@
     </func>
 
     <func>
-      <name name="in" arity="2"/>
+      <name name="in" arity="2" since=""/>
       <fsummary>Insert an item at the rear of a queue.</fsummary>
       <desc>
         <p>Inserts <c><anno>Item</anno></c> at the rear of queue
@@ -154,7 +154,7 @@
     </func>
 
     <func>
-      <name name="in_r" arity="2"/>
+      <name name="in_r" arity="2" since=""/>
       <fsummary>Insert an item at the front of a queue.</fsummary>
       <desc>
         <p>Inserts <c><anno>Item</anno></c> at the front of queue
@@ -164,7 +164,7 @@
     </func>
 
     <func>
-      <name name="is_empty" arity="1"/>
+      <name name="is_empty" arity="1" since=""/>
       <fsummary>Test if a queue is empty.</fsummary>
       <desc>
         <p>Tests if <c><anno>Q</anno></c> is empty and returns <c>true</c> if
@@ -173,7 +173,7 @@
     </func>
 
     <func>
-      <name name="is_queue" arity="1"/>
+      <name name="is_queue" arity="1" since=""/>
       <fsummary>Test if a term is a queue.</fsummary>
       <desc>
         <p>Tests if <c><anno>Term</anno></c> is a queue and returns <c>true</c>
@@ -182,7 +182,7 @@
     </func>
 
     <func>
-      <name name="join" arity="2"/>
+      <name name="join" arity="2" since=""/>
       <fsummary>Join two queues.</fsummary>
       <desc>
         <p>Returns a queue <c><anno>Q3</anno></c> that is the result of joining
@@ -192,7 +192,7 @@
     </func>
 
     <func>
-      <name name="len" arity="1"/>
+      <name name="len" arity="1" since=""/>
       <fsummary>Get the length of a queue.</fsummary>
       <desc>
         <p>Calculates and returns the length of queue <c><anno>Q</anno></c>.</p>
@@ -200,7 +200,7 @@
     </func>
 
     <func>
-      <name name="member" arity="2"/>
+      <name name="member" arity="2" since=""/>
       <fsummary>Test if an item is in a queue.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>Item</anno></c> matches some element
@@ -209,7 +209,7 @@
     </func>
 
     <func>
-      <name name="new" arity="0"/>
+      <name name="new" arity="0" since=""/>
       <fsummary>Create an empty queue.</fsummary>
       <desc>
         <p>Returns an empty queue.</p>
@@ -217,7 +217,7 @@
     </func>
 
     <func>
-      <name name="out" arity="1"/>
+      <name name="out" arity="1" since=""/>
       <fsummary>Remove the front item from a queue.</fsummary>
       <desc>
         <p>Removes the item at the front of queue <c><anno>Q1</anno></c>.
@@ -230,7 +230,7 @@
     </func>
 
     <func>
-      <name name="out_r" arity="1"/>
+      <name name="out_r" arity="1" since=""/>
       <fsummary>Remove the rear item from a queue.</fsummary>
       <desc>
         <p>Removes the item at the rear of queue <c><anno>Q1</anno></c>.
@@ -242,7 +242,7 @@
     </func>
 
     <func>
-      <name name="reverse" arity="1"/>
+      <name name="reverse" arity="1" since=""/>
       <fsummary>Reverse a queue.</fsummary>
       <desc>
         <p>Returns a queue <c><anno>Q2</anno></c> containing the items of
@@ -251,7 +251,7 @@
     </func>
 
     <func>
-      <name name="split" arity="2"/>
+      <name name="split" arity="2" since=""/>
       <fsummary>Split a queue in two.</fsummary>
       <desc>
         <p>Splits <c><anno>Q1</anno></c> in two. The <c><anno>N</anno></c>
@@ -261,7 +261,7 @@
     </func>
 
     <func>
-      <name name="to_list" arity="1"/>
+      <name name="to_list" arity="1" since=""/>
       <fsummary>Convert a queue to a list.</fsummary>
       <desc>
         <p>Returns a list of the items in the queue in the same order;
@@ -276,7 +276,7 @@
 
   <funcs>
     <func>
-      <name name="drop" arity="1"/>
+      <name name="drop" arity="1" since=""/>
       <fsummary>Remove the front item from a queue.</fsummary>
       <desc>
         <p>Returns a queue <c><anno>Q2</anno></c> that is the result of removing
@@ -286,7 +286,7 @@
     </func>
 
     <func>
-      <name name="drop_r" arity="1"/>
+      <name name="drop_r" arity="1" since=""/>
       <fsummary>Remove the rear item from a queue.</fsummary>
       <desc>
         <p>Returns a queue <c><anno>Q2</anno></c> that is the result of removing
@@ -296,7 +296,7 @@
     </func>
 
     <func>
-      <name name="get" arity="1"/>
+      <name name="get" arity="1" since=""/>
       <fsummary>Return the front item of a queue.</fsummary>
       <desc>
         <p>Returns <c><anno>Item</anno></c> at the front of queue
@@ -306,7 +306,7 @@
     </func>
 
     <func>
-      <name name="get_r" arity="1"/>
+      <name name="get_r" arity="1" since=""/>
       <fsummary>Return the rear item of a queue.</fsummary>
       <desc>
         <p>Returns <c><anno>Item</anno></c> at the rear of queue
@@ -316,7 +316,7 @@
     </func>
 
     <func>
-      <name name="peek" arity="1"/>
+      <name name="peek" arity="1" since=""/>
       <fsummary>Return the front item of a queue.</fsummary>
       <desc>
         <p>Returns tuple <c>{value, <anno>Item</anno>}</c>, where
@@ -326,7 +326,7 @@
     </func>
 
     <func>
-      <name name="peek_r" arity="1"/>
+      <name name="peek_r" arity="1" since=""/>
       <fsummary>Return the rear item of a queue.</fsummary>
       <desc>
         <p>Returns tuple <c>{value, <anno>Item</anno>}</c>, where
@@ -342,7 +342,7 @@
 
   <funcs>
     <func>
-      <name name="cons" arity="2"/>
+      <name name="cons" arity="2" since=""/>
       <fsummary>Insert an item at the head of a queue.</fsummary>
       <desc>
         <p>Inserts <c><anno>Item</anno></c> at the head of queue
@@ -352,7 +352,7 @@
     </func>
 
     <func>
-      <name name="daeh" arity="1"/>
+      <name name="daeh" arity="1" since=""/>
       <fsummary>Return the tail item of a queue.</fsummary>
       <desc>
         <p>Returns the tail item of queue <c><anno>Q</anno></c>.</p>
@@ -361,7 +361,7 @@
     </func>
 
     <func>
-      <name name="head" arity="1"/>
+      <name name="head" arity="1" since=""/>
       <fsummary>Return the item at the head of a queue.</fsummary>
       <desc>
         <p>Returns <c><anno>Item</anno></c> from the head of queue
@@ -371,7 +371,7 @@
     </func>
 
     <func>
-      <name name="init" arity="1"/>
+      <name name="init" arity="1" since=""/>
       <fsummary>Remove the tail item from a queue.</fsummary>
       <desc>
         <p>Returns a queue <c><anno>Q2</anno></c> that is the result of removing
@@ -381,7 +381,7 @@
     </func>
 
     <func>
-      <name name="lait" arity="1"/>
+      <name name="lait" arity="1" since=""/>
       <fsummary>Remove the tail item from a queue.</fsummary>
       <desc>
         <p>Returns a queue <c><anno>Q2</anno></c> that is the result of removing
@@ -392,7 +392,7 @@
     </func>
 
     <func>
-      <name name="last" arity="1"/>
+      <name name="last" arity="1" since=""/>
       <fsummary>Return the tail item of a queue.</fsummary>
       <desc>
         <p>Returns the tail item of queue <c><anno>Q</anno></c>.</p>
@@ -401,7 +401,7 @@
     </func>
 
     <func>
-      <name name="liat" arity="1"/>
+      <name name="liat" arity="1" since=""/>
       <fsummary>Remove the tail item from a queue.</fsummary>
       <desc>
         <p>Returns a queue <c><anno>Q2</anno></c> that is the result of removing
@@ -411,7 +411,7 @@
     </func>
 
     <func>
-      <name name="snoc" arity="2"/>
+      <name name="snoc" arity="2" since=""/>
       <fsummary>Insert an item at the tail of a queue.</fsummary>
       <desc>
         <p>Inserts <c><anno>Item</anno></c> as the tail item of queue
@@ -421,7 +421,7 @@
     </func>
 
     <func>
-      <name name="tail" arity="1"/>
+      <name name="tail" arity="1" since=""/>
       <fsummary>Remove the head item from a queue.</fsummary>
       <desc>
         <p>Returns a queue <c><anno>Q2</anno></c> that is the result of removing
diff --git a/lib/stdlib/doc/src/rand.xml b/lib/stdlib/doc/src/rand.xml
index 21f680a0ee..b4737b48f8 100644
--- a/lib/stdlib/doc/src/rand.xml
+++ b/lib/stdlib/doc/src/rand.xml
@@ -32,31 +32,77 @@
     <rev>A</rev>
     <file>rand.xml</file>
   </header>
-  <module>rand</module>
+  <module since="OTP 18.0">rand</module>
   <modulesummary>Pseudo random number generation.</modulesummary>
   <description>
     <p>
       This module provides a pseudo random number generator.
       The module contains a number of algorithms.
-      The uniform distribution algorithms use the
+      The uniform distribution algorithms are based on the
       <url href="http://xorshift.di.unimi.it">
-	xoroshiro116+ and xorshift1024* algorithms by Sebastiano Vigna.
+	Xoroshiro and Xorshift algorithms
       </url>
+      by Sebastiano Vigna.
       The normal distribution algorithm uses the
       <url href="http://www.jstatsoft.org/v05/i08">
 	Ziggurat Method by Marsaglia and Tsang
       </url>
       on top of the uniform distribution algorithm.
     </p>
-    <p>For some algorithms, jump functions are provided for generating
-        non-overlapping sequences for parallel computations.
-        The jump functions perform calculations
-        equivalent to perform a large number of repeated calls
-        for calculating new states. </p>
+    <p>
+      For most algorithms, jump functions are provided for generating
+      non-overlapping sequences for parallel computations.
+      The jump functions perform calculations
+      equivalent to perform a large number of repeated calls
+      for calculating new states.
+    </p>
 
     <p>The following algorithms are provided:</p>
 
     <taglist>
+      <tag><c>exsss</c></tag>
+      <item>
+        <p>Xorshift116**, 58 bits precision and period of 2^116-1</p>
+        <p>Jump function: equivalent to 2^64 calls</p>
+	<p>
+	  This is the Xorshift116 generator combined with the StarStar scrambler
+	  from the 2018 paper by David Blackman and Sebastiano Vigna:
+	  <url href="http://vigna.di.unimi.it/ftp/papers/ScrambledLinear.pdf">
+	    Scrambled Linear Pseudorandom Number Generators
+	  </url>
+	</p>
+	<p>
+	  The generator does not need 58-bit rotates so it is faster
+	  than the Xoroshiro116 generator, and when combined with
+	  the StarStar scrambler it does not have any weak low bits
+	  like <c>exrop</c> (Xoroshiro116+).
+	</p>
+	<p>
+	  Alas, this combination is about 10% slower than <c>exrop</c>,
+	  but is despite that the default algorithm thanks to its
+	  statistical qualities.
+	</p>
+      </item>
+      <tag><c>exro928ss</c></tag>
+      <item>
+        <p>Xoroshiro928**, 58 bits precision and a period of 2^928-1</p>
+        <p>Jump function: equivalent to 2^512 calls</p>
+	<p>
+	  This is a 58 bit version of Xoroshiro1024**,
+	  from the 2018 paper by David Blackman and Sebastiano Vigna:
+	  <url href="http://vigna.di.unimi.it/ftp/papers/ScrambledLinear.pdf">
+	    Scrambled Linear Pseudorandom Number Generators
+	  </url>
+	  that on a 64 bit Erlang system executes only about 40% slower than
+	  the default <c>exsss</c> algorithm but with much longer period
+	  and better statistical properties, and on the flip side
+	  a larger state.
+	</p>
+	<p>
+	  Many thanks to Sebastiano Vigna for his help with
+	  the 58 bit adaption.
+	</p>
+      </item>
       <tag><c>exrop</c></tag>
       <item>
         <p>Xoroshiro116+, 58 bits precision and period of 2^116-1</p>
@@ -83,7 +129,7 @@
     </taglist>
 
     <p>
-      The default algorithm is <c>exrop</c> (Xoroshiro116+).
+      The default algorithm is <c>exsss</c> (Xorshift116**).
       If a specific algorithm is
       required, ensure to always use <seealso marker="#seed-1">
       <c>seed/1</c></seealso> to initialize the state.
@@ -154,19 +200,19 @@ R1 = rand:uniform(),</pre>
     <p>Use a specified algorithm:</p>
 
     <pre>
-_ = rand:seed(exs1024s),
+_ = rand:seed(exs928ss),
 R2 = rand:uniform(),</pre>
 
     <p>Use a specified algorithm with a constant seed:</p>
 
     <pre>
-_ = rand:seed(exs1024s, {123, 123534, 345345}),
+_ = rand:seed(exs928ss, {123, 123534, 345345}),
 R3 = rand:uniform(),</pre>
 
    <p>Use the functional API with a non-constant seed:</p>
 
    <pre>
-S0 = rand:seed_s(exrop),
+S0 = rand:seed_s(exsss),
 {R4, S1} = rand:uniform_s(S0),</pre>
 
    <p>Textbook basic form Box-Muller standard normal deviate</p>
@@ -195,8 +241,9 @@ SND0 = math:sqrt(-2 * math:log(R5)) * math:cos(math:pi() * R6)</pre>
     </note>
 
     <p>
-      For all these generators the lowest bit(s) has got
-      a slightly less random behaviour than all other bits.
+      For all these generators except <c>exro928ss</c> and <c>exsss</c>
+      the lowest bit(s) has got a slightly less
+      random behaviour than all other bits.
       1 bit for <c>exrop</c> (and <c>exsp</c>),
       and 3 bits for <c>exs1024s</c>.
       See for example the explanation in the
@@ -211,7 +258,7 @@ up to (and included) 16TB, with the exception of binary rank tests,
 which fail due to the lowest bit being an LFSR; all other bits pass all
 tests. We suggest to use a sign test to extract a random Boolean value.</pre>
     <p>
-      If this is a problem; to generate a boolean
+      If this is a problem; to generate a boolean with these algorithms
       use something like this:
     </p>
     <pre>(rand:uniform(16) > 8)</pre>
@@ -254,26 +301,55 @@ tests. We suggest to use a sign test to extract a random Boolean value.</pre>
       </desc>
     </datatype>
     <datatype>
-      <name name="exs64_state"/>
-      <desc><p>Algorithm specific internal state</p></desc>
+      <name name="seed"/>
+      <desc>
+	<p>
+	  A seed value for the generator.
+	</p>
+	<p>
+	  A list of integers sets the generator's internal state directly,
+	  after algorithm-dependent checks of the value
+	  and masking to the proper word size.
+	</p>
+	<p>
+	  An integer is used as the initial state for a SplitMix64 generator.
+	  The output values of that is then used for setting
+	  the generator's internal state
+	  after masking to the proper word size
+	  and if needed avoiding zero values.
+	</p>
+	<p>
+	  A traditional 3-tuple of integers seed is passed through
+	  algorithm-dependent hashing functions to create
+	  the generator's initial state.
+	</p>
+      </desc>
     </datatype>
     <datatype>
       <name name="exsplus_state"/>
       <desc><p>Algorithm specific internal state</p></desc>
     </datatype>
     <datatype>
-      <name name="exs1024_state"/>
+      <name name="exro928_state"/>
       <desc><p>Algorithm specific internal state</p></desc>
     </datatype>
     <datatype>
       <name name="exrop_state"/>
       <desc><p>Algorithm specific internal state</p></desc>
     </datatype>
+    <datatype>
+      <name name="exs1024_state"/>
+      <desc><p>Algorithm specific internal state</p></desc>
+    </datatype>
+    <datatype>
+      <name name="exs64_state"/>
+      <desc><p>Algorithm specific internal state</p></desc>
+    </datatype>
   </datatypes>
 
   <funcs>
     <func>
-      <name name="export_seed" arity="0"/>
+      <name name="export_seed" arity="0" since="OTP 18.0"/>
       <fsummary>Export the random number generation state.</fsummary>
       <desc><marker id="export_seed-0"/>
         <p>Returns the random number state in an external format.
@@ -282,7 +358,7 @@ tests. We suggest to use a sign test to extract a random Boolean value.</pre>
     </func>
 
     <func>
-      <name name="export_seed_s" arity="1"/>
+      <name name="export_seed_s" arity="1" since="OTP 18.0"/>
       <fsummary>Export the random number generation state.</fsummary>
       <desc><marker id="export_seed_s-1"/>
         <p>Returns the random number generator state in an external format.
@@ -291,7 +367,7 @@ tests. We suggest to use a sign test to extract a random Boolean value.</pre>
     </func>
 
     <func>
-      <name name="jump" arity="0"/>
+      <name name="jump" arity="0" since="OTP 20.0"/>
       <fsummary>Return the seed after performing jump calculation
           to the state in the process dictionary.</fsummary>
       <desc><marker id="jump-0" />
@@ -306,7 +382,7 @@ tests. We suggest to use a sign test to extract a random Boolean value.</pre>
     </func>
 
     <func>
-      <name name="jump" arity="1"/>
+      <name name="jump" arity="1" since="OTP 20.0"/>
       <fsummary>Return the seed after performing jump calculation.</fsummary>
       <desc><marker id="jump-1" />
           <p>Returns the state after performing jump calculation
@@ -318,7 +394,7 @@ tests. We suggest to use a sign test to extract a random Boolean value.</pre>
     </func>
 
     <func>
-      <name name="normal" arity="0"/>
+      <name name="normal" arity="0" since="OTP 18.0"/>
       <fsummary>Return a standard normal distributed random float.</fsummary>
       <desc>
         <p>Returns a standard normal deviate float (that is, the mean
@@ -328,7 +404,7 @@ tests. We suggest to use a sign test to extract a random Boolean value.</pre>
     </func>
 
     <func>
-      <name name="normal" arity="2"/>
+      <name name="normal" arity="2" since="OTP 20.0"/>
       <fsummary>Return a normal distributed random float.</fsummary>
       <desc>
         <p>Returns a normal N(Mean, Variance) deviate float
@@ -337,7 +413,7 @@ tests. We suggest to use a sign test to extract a random Boolean value.</pre>
     </func>
 
     <func>
-      <name name="normal_s" arity="1"/>
+      <name name="normal_s" arity="1" since="OTP 18.0"/>
       <fsummary>Return a standard normal distributed random float.</fsummary>
       <desc>
         <p>Returns, for a specified state, a standard normal
@@ -347,7 +423,7 @@ tests. We suggest to use a sign test to extract a random Boolean value.</pre>
     </func>
 
     <func>
-      <name name="normal_s" arity="3"/>
+      <name name="normal_s" arity="3" since="OTP 20.0"/>
       <fsummary>Return a normal distributed random float.</fsummary>
       <desc>
         <p>Returns, for a specified state, a normal N(Mean, Variance)
@@ -356,7 +432,7 @@ tests. We suggest to use a sign test to extract a random Boolean value.</pre>
     </func>
 
     <func>
-      <name name="seed" arity="1"/>
+      <name name="seed" arity="1" since="OTP 18.0"/>
       <fsummary>Seed random number generator.</fsummary>
       <desc>
         <marker id="seed-1"/>
@@ -372,7 +448,7 @@ tests. We suggest to use a sign test to extract a random Boolean value.</pre>
     </func>
 
     <func>
-      <name name="seed" arity="2"/>
+      <name name="seed" arity="2" since="OTP 18.0"/>
       <fsummary>Seed the random number generation.</fsummary>
       <desc>
         <p>Seeds random number generation with the specified algorithm and
@@ -381,7 +457,7 @@ tests. We suggest to use a sign test to extract a random Boolean value.</pre>
     </func>
 
     <func>
-      <name name="seed_s" arity="1"/>
+      <name name="seed_s" arity="1" since="OTP 18.0"/>
       <fsummary>Seed random number generator.</fsummary>
       <desc>
         <p>
@@ -396,7 +472,7 @@ tests. We suggest to use a sign test to extract a random Boolean value.</pre>
     </func>
 
     <func>
-      <name name="seed_s" arity="2"/>
+      <name name="seed_s" arity="2" since="OTP 18.0"/>
       <fsummary>Seed the random number generation.</fsummary>
       <desc>
         <p>Seeds random number generation with the specified algorithm and
@@ -405,7 +481,7 @@ tests. We suggest to use a sign test to extract a random Boolean value.</pre>
     </func>
 
     <func>
-      <name name="uniform" arity="0"/>
+      <name name="uniform" arity="0" since="OTP 18.0"/>
       <fsummary>Return a random float.</fsummary>
       <desc><marker id="uniform-0"/>
         <p>
@@ -441,7 +517,7 @@ end.</pre>
     </func>
 
     <func>
-      <name name="uniform_real" arity="0"/>
+      <name name="uniform_real" arity="0" since="OTP 21.0"/>
       <fsummary>Return a random float.</fsummary>
       <desc><marker id="uniform_real-0"/>
         <p>
@@ -477,7 +553,7 @@ end.</pre>
     </func>
 
     <func>
-      <name name="uniform" arity="1"/>
+      <name name="uniform" arity="1" since="OTP 18.0"/>
       <fsummary>Return a random integer.</fsummary>
       <desc><marker id="uniform-1"/>
         <p>Returns, for a specified integer <c><anno>N</anno> >= 1</c>,
@@ -488,7 +564,7 @@ end.</pre>
     </func>
 
     <func>
-      <name name="uniform_s" arity="1"/>
+      <name name="uniform_s" arity="1" since="OTP 18.0"/>
       <fsummary>Return a random float.</fsummary>
       <desc>
         <p>
@@ -524,7 +600,7 @@ end.</pre>
     </func>
 
     <func>
-      <name name="uniform_real_s" arity="1"/>
+      <name name="uniform_real_s" arity="1" since="OTP 21.0"/>
       <fsummary>Return a random float.</fsummary>
       <desc>
         <p>
@@ -586,7 +662,7 @@ end.</pre>
     </func>
 
     <func>
-      <name name="uniform_s" arity="2"/>
+      <name name="uniform_s" arity="2" since="OTP 18.0"/>
       <fsummary>Return a random integer.</fsummary>
       <desc>
         <p>Returns, for a specified integer <c><anno>N</anno> >= 1</c>
diff --git a/lib/stdlib/doc/src/random.xml b/lib/stdlib/doc/src/random.xml
index 8d090d20b3..f0261ed009 100644
--- a/lib/stdlib/doc/src/random.xml
+++ b/lib/stdlib/doc/src/random.xml
@@ -32,7 +32,7 @@
     <rev>A</rev>
     <file>random.xml</file>
   </header>
-  <module>random</module>
+  <module since="">random</module>
   <modulesummary>Pseudo-random number generation.</modulesummary>
   <description>
     <p>This module provides a random number generator. The method is attributed
@@ -73,7 +73,7 @@
 
   <funcs>
     <func>
-      <name name="seed" arity="0"/>
+      <name name="seed" arity="0" since=""/>
       <fsummary>Seed random number generation with default values.</fsummary>
       <desc>
         <p>Seeds random number generation with default (fixed) values
@@ -82,7 +82,7 @@
     </func>
 
     <func>
-      <name name="seed" arity="1"/>
+      <name name="seed" arity="1" since=""/>
       <fsummary>Seed random number generator.</fsummary>
       <desc>
         <p><c>seed({<anno>A1</anno>, <anno>A2</anno>, <anno>A3</anno>})</c>
@@ -92,7 +92,7 @@
     </func>
 
    <func>
-      <name name="seed" arity="3"/>
+      <name name="seed" arity="3" since=""/>
       <fsummary>Seed random number generator.</fsummary>
       <desc>
         <p>Seeds random number generation with integer values in the process
@@ -116,7 +116,7 @@ random:seed(erlang:phash2([node()]),
     </func>
 
     <func>
-      <name name="seed0" arity="0"/>
+      <name name="seed0" arity="0" since=""/>
       <fsummary>Return default state for random number generation.</fsummary>
       <desc>
         <p>Returns the default state.</p>
@@ -124,7 +124,7 @@ random:seed(erlang:phash2([node()]),
     </func>
 
     <func>
-      <name name="uniform" arity="0"/>
+      <name name="uniform" arity="0" since=""/>
       <fsummary>Return a random float.</fsummary>
       <desc>
         <p>Returns a random float uniformly distributed between <c>0.0</c>
@@ -133,7 +133,7 @@ random:seed(erlang:phash2([node()]),
     </func>
 
     <func>
-      <name name="uniform" arity="1"/>
+      <name name="uniform" arity="1" since=""/>
       <fsummary>Return a random integer.</fsummary>
       <desc>
         <p>Returns, for a specified integer <c><anno>N</anno> >= 1</c>,
@@ -144,7 +144,7 @@ random:seed(erlang:phash2([node()]),
     </func>
 
     <func>
-      <name name="uniform_s" arity="1"/>
+      <name name="uniform_s" arity="1" since=""/>
       <fsummary>Return a random float.</fsummary>
       <desc>
         <p>Returns, for a specified state, a random float uniformly
@@ -153,7 +153,7 @@ random:seed(erlang:phash2([node()]),
     </func>
 
     <func>
-      <name name="uniform_s" arity="2"/>
+      <name name="uniform_s" arity="2" since=""/>
       <fsummary>Return a random integer.</fsummary>
       <desc>
         <p>Returns, for a specified integer <c><anno>N</anno> >= 1</c> and a
diff --git a/lib/stdlib/doc/src/re.xml b/lib/stdlib/doc/src/re.xml
index 078ca0e38c..b04434492d 100644
--- a/lib/stdlib/doc/src/re.xml
+++ b/lib/stdlib/doc/src/re.xml
@@ -34,7 +34,7 @@
     <rev>A</rev>
     <file>re.xml</file>
   </header>
-  <module>re</module>
+  <module since="">re</module>
   <modulesummary>Perl-like regular expressions for Erlang.</modulesummary>
   <description>
     <p>This module contains regular expression matching functions for
@@ -79,7 +79,7 @@
 
   <funcs>
     <func>
-      <name name="version" arity="0"/>
+      <name name="version" arity="0" since="OTP 20.0"/>
       <fsummary>Gives the PCRE version of the system in a string format</fsummary>
       <desc>
       <p>The return of this function is a string with the PCRE version of the system that was used in the Erlang/OTP compilation.</p>
@@ -87,7 +87,7 @@
     </func>
 
     <func>
-      <name name="compile" arity="1"/>
+      <name name="compile" arity="1" since=""/>
       <fsummary>Compile a regular expression into a match program</fsummary>
       <desc>
       <p>The same as <c>compile(<anno>Regexp</anno>,[])</c></p>
@@ -95,7 +95,7 @@
     </func> 
 
     <func>
-      <name name="compile" arity="2"/>
+      <name name="compile" arity="2" since=""/>
       <fsummary>Compile a regular expression into a match program.</fsummary>
       <desc>
         <p>Compiles a regular expression, with the syntax
@@ -304,7 +304,7 @@
     </func> 
 
     <func>
-      <name name="inspect" arity="2"/>
+      <name name="inspect" arity="2" since="OTP 17.0"/>
       <fsummary>Inspects a compiled regular expression.</fsummary>
       <desc>
         <p>Takes a compiled regular expression and an item, and returns the
@@ -348,7 +348,7 @@
     </func>
 
     <func>
-      <name name="replace" arity="3"/>
+      <name name="replace" arity="3" since=""/>
       <fsummary>Match a subject against regular expression and replace matching
         elements with Replacement.</fsummary>
       <desc>
@@ -358,7 +358,7 @@
     </func> 
 
     <func>
-      <name name="replace" arity="4"/>
+      <name name="replace" arity="4" since=""/>
       <fsummary>Match a subject against regular expression and replace matching
         elements with Replacement.</fsummary>
       <desc>
@@ -408,7 +408,7 @@ re:replace("abcd","c","[\\&amp;]",[{return,list}]).</code>
     </func>
 
     <func>
-      <name name="run" arity="2"/>
+      <name name="run" arity="2" since=""/>
       <fsummary>Match a subject against regular expression and capture
         subpatterns.</fsummary>
       <desc>
@@ -417,7 +417,7 @@ re:replace("abcd","c","[\\&amp;]",[{return,list}]).</code>
     </func> 
 
     <func>
-      <name name="run" arity="3"/>
+      <name name="run" arity="3" since=""/>
       <fsummary>Match a subject against regular expression and capture
         subpatterns.</fsummary>
       <type_desc variable="CompileOpt">See <seealso marker="#compile_options">
@@ -992,7 +992,7 @@ re:run("cacb","c(a|b)",[global,{capture,[1],list}]).</code>
     </func>
 
     <func>
-      <name name="split" arity="2"/>
+      <name name="split" arity="2" since=""/>
       <fsummary>Split a string by tokens specified as a regular expression.
       </fsummary>
       <desc>
@@ -1001,7 +1001,7 @@ re:run("cacb","c(a|b)",[global,{capture,[1],list}]).</code>
     </func>
 
     <func>
-      <name name="split" arity="3"/>
+      <name name="split" arity="3" since=""/>
       <fsummary>Split a string by tokens specified as a regular expression</fsummary>
       <type_desc variable="CompileOpt">See <seealso marker="#compile_options">
         <c>compile/2</c></seealso>.</type_desc>
diff --git a/lib/stdlib/doc/src/sets.xml b/lib/stdlib/doc/src/sets.xml
index 8db3e1e623..07ce41b7a7 100644
--- a/lib/stdlib/doc/src/sets.xml
+++ b/lib/stdlib/doc/src/sets.xml
@@ -32,7 +32,7 @@
     <rev>A</rev>
     <file>sets.xml</file>
   </header>
-  <module>sets</module>
+  <module since="">sets</module>
   <modulesummary>Functions for set manipulation.</modulesummary>
   <description>
     <p>Sets are collections of elements with no duplicate elements.
@@ -59,7 +59,7 @@
 
   <funcs>
     <func>
-      <name name="add_element" arity="2"/>
+      <name name="add_element" arity="2" since=""/>
       <fsummary>Add an element to a <c>Set</c>.</fsummary>
       <desc>
         <p>Returns a new set formed from <c><anno>Set1</anno></c> with
@@ -68,7 +68,7 @@
     </func>
 
     <func>
-      <name name="del_element" arity="2"/>
+      <name name="del_element" arity="2" since=""/>
       <fsummary>Remove an element from a <c>Set</c>.</fsummary>
       <desc>
         <p>Returns <c><anno>Set1</anno></c>, but with
@@ -77,7 +77,7 @@
     </func>
 
     <func>
-      <name name="filter" arity="2"/>
+      <name name="filter" arity="2" since=""/>
       <fsummary>Filter set elements.</fsummary>
       <desc>
         <p>Filters elements in <c><anno>Set1</anno></c> with boolean function
@@ -86,7 +86,7 @@
     </func>
 
     <func>
-      <name name="fold" arity="3"/>
+      <name name="fold" arity="3" since=""/>
       <fsummary>Fold over set elements.</fsummary>
       <desc>
         <p>Folds <c><anno>Function</anno></c> over every element in
@@ -96,7 +96,7 @@
     </func>
 
     <func>
-      <name name="from_list" arity="1"/>
+      <name name="from_list" arity="1" since=""/>
       <fsummary>Convert a list into a <c>Set</c>.</fsummary>
       <desc>
         <p>Returns a set of the elements in <c><anno>List</anno></c>.</p>
@@ -104,7 +104,7 @@
     </func>
 
     <func>
-      <name name="intersection" arity="1"/>
+      <name name="intersection" arity="1" since=""/>
       <fsummary>Return the intersection of a list of <c>Sets</c>.</fsummary>
       <desc>
         <p>Returns the intersection of the non-empty list of sets.</p>
@@ -112,7 +112,7 @@
     </func>
 
     <func>
-      <name name="intersection" arity="2"/>
+      <name name="intersection" arity="2" since=""/>
       <fsummary>Return the intersection of two <c>Sets</c>.</fsummary>
       <desc>
         <p>Returns the intersection of <c><anno>Set1</anno></c> and
@@ -121,7 +121,7 @@
     </func>
 
     <func>
-      <name name="is_disjoint" arity="2"/>
+      <name name="is_disjoint" arity="2" since=""/>
       <fsummary>Check whether two <c>Sets</c> are disjoint.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>Set1</anno></c> and
@@ -131,7 +131,7 @@
     </func>
 
     <func>
-      <name name="is_element" arity="2"/>
+      <name name="is_element" arity="2" since=""/>
       <fsummary>Test for membership of a <c>Set</c>.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>Element</anno></c> is an element of
@@ -140,7 +140,7 @@
     </func>
 
     <func>
-      <name name="is_empty" arity="1"/>
+      <name name="is_empty" arity="1" since="OTP 21.0"/>
       <fsummary>Test for empty set.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>Set</anno></c> is an empty set,
@@ -149,7 +149,7 @@
     </func>
 
     <func>
-      <name name="is_set" arity="1"/>
+      <name name="is_set" arity="1" since=""/>
       <fsummary>Test for a <c>Set</c>.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>Set</anno></c> is a set of
@@ -158,7 +158,7 @@
     </func>
 
     <func>
-      <name name="is_subset" arity="2"/>
+      <name name="is_subset" arity="2" since=""/>
       <fsummary>Test for subset.</fsummary>
       <desc>
         <p>Returns <c>true</c> when every element of <c><anno>Set1</anno></c> is
@@ -167,7 +167,7 @@
     </func>
 
     <func>
-      <name name="new" arity="0"/>
+      <name name="new" arity="0" since=""/>
       <fsummary>Return an empty set.</fsummary>
       <desc>
         <p>Returns a new empty set.</p>
@@ -175,7 +175,7 @@
     </func>
 
     <func>
-      <name name="size" arity="1"/>
+      <name name="size" arity="1" since=""/>
       <fsummary>Return the number of elements in a set.</fsummary>
       <desc>
         <p>Returns the number of elements in <c><anno>Set</anno></c>.</p>
@@ -183,7 +183,7 @@
     </func>
 
     <func>
-      <name name="subtract" arity="2"/>
+      <name name="subtract" arity="2" since=""/>
       <fsummary>Return the difference of two <c>Sets</c>.</fsummary>
       <desc>
         <p>Returns only the elements of <c><anno>Set1</anno></c> that are not
@@ -192,7 +192,7 @@
     </func>
 
     <func>
-      <name name="to_list" arity="1"/>
+      <name name="to_list" arity="1" since=""/>
       <fsummary>Convert a <c>Set</c>into a list.</fsummary>
       <desc>
         <p>Returns the elements of <c><anno>Set</anno></c> as a list.
@@ -201,7 +201,7 @@
     </func>
 
     <func>
-      <name name="union" arity="1"/>
+      <name name="union" arity="1" since=""/>
       <fsummary>Return the union of a list of <c>Sets</c>.</fsummary>
       <desc>
         <p>Returns the merged (union) set of the list of sets.</p>
@@ -209,7 +209,7 @@
     </func>
 
     <func>
-      <name name="union" arity="2"/>
+      <name name="union" arity="2" since=""/>
       <fsummary>Return the union of two <c>Sets</c>.</fsummary>
       <desc>
         <p>Returns the merged (union) set of <c><anno>Set1</anno></c> and
diff --git a/lib/stdlib/doc/src/shell.xml b/lib/stdlib/doc/src/shell.xml
index 2593d3690b..50a0968531 100644
--- a/lib/stdlib/doc/src/shell.xml
+++ b/lib/stdlib/doc/src/shell.xml
@@ -32,7 +32,7 @@
     <rev>A</rev>
     <file>shell.xml</file>
   </header>
-  <module>shell</module>
+  <module since="">shell</module>
   <modulesummary>The Erlang shell.</modulesummary>
   <description>
     <p>This module provides an Erlang shell.</p>
@@ -874,7 +874,7 @@ q                 - quit erlang
 
   <funcs>
     <func>
-      <name>catch_exception(Bool) -> boolean()</name>
+      <name since="">catch_exception(Bool) -> boolean()</name>
       <fsummary>Set the exception handling of the shell.</fsummary>
       <type>
         <v>Bool = boolean()</v>
@@ -892,7 +892,7 @@ q                 - quit erlang
     </func>
 
     <func>
-      <name name="history" arity="1"/>
+      <name name="history" arity="1" since=""/>
       <fsummary>Set the number of previous commands to keep.</fsummary>
       <desc>
         <p>Sets the number of previous commands to keep in the
@@ -902,7 +902,7 @@ q                 - quit erlang
     </func>
 
     <func>
-      <name name="prompt_func" arity="1"/>
+      <name name="prompt_func" arity="1" since="OTP R13B04"/>
       <fsummary>Set the shell prompt.</fsummary>
       <desc>
         <p>Sets the shell prompt function to <c><anno>PromptFunc</anno></c>.
@@ -911,7 +911,7 @@ q                 - quit erlang
     </func>
 
     <func>
-      <name name="results" arity="1"/>
+      <name name="results" arity="1" since=""/>
       <fsummary>Set the number of previous results to keep.</fsummary>
       <desc>
         <p>Sets the number of results from previous commands to keep in
@@ -921,7 +921,7 @@ q                 - quit erlang
     </func>
 
     <func>
-      <name name="start_restricted" arity="1"/>
+      <name name="start_restricted" arity="1" since=""/>
       <fsummary>Exit a normal shell and starts a restricted shell.</fsummary>
       <desc>
         <p>Exits a normal shell and starts a restricted shell.
@@ -936,7 +936,7 @@ q                 - quit erlang
     </func>
 
     <func>
-      <name name="stop_restricted" arity="0"/>
+      <name name="stop_restricted" arity="0" since=""/>
       <fsummary>Exit a restricted shell and starts a normal shell.</fsummary>
       <desc>
         <p>Exits a restricted shell and starts a normal shell. The function
@@ -945,7 +945,7 @@ q                 - quit erlang
     </func>
 
     <func>
-      <name name="strings" arity="1"/>
+      <name name="strings" arity="1" since="OTP R16B"/>
       <fsummary>Set the shell's string recognition flag.</fsummary>
       <desc>
         <p>Sets pretty printing of lists to <c><anno>Strings</anno></c>.
diff --git a/lib/stdlib/doc/src/slave.xml b/lib/stdlib/doc/src/slave.xml
index e53ec8231b..f9e42ad47d 100644
--- a/lib/stdlib/doc/src/slave.xml
+++ b/lib/stdlib/doc/src/slave.xml
@@ -28,7 +28,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>slave</module>
+  <module since="">slave</module>
   <modulesummary>Functions for starting and controlling slave nodes.
   </modulesummary>
   <description>
@@ -39,23 +39,30 @@
       done through the master.</p>
 
     <p>Slave nodes on other hosts than the current one are started with
-      the <c>rsh</c> program. The user must be allowed to <c>rsh</c> to
+      the <c>ssh</c> program. The user must be allowed to <c>ssh</c> to
       the remote hosts without being prompted for a password. This can
-      be arranged in a number of ways (for details, see the <c>rsh</c>
+      be arranged in a number of ways (for details, see the <c>ssh</c>
       documentation). A slave node started on the same host
       as the master inherits certain environment values from the master,
       such as the current directory and the environment variables. For
       what can be assumed about the environment when a slave is started
-      on another host, see the documentation for the <c>rsh</c>
+      on another host, see the documentation for the <c>ssh</c>
       program.</p>
 
-    <p>An alternative to the <c>rsh</c> program can be specified on
+    <p>An alternative to the <c>ssh</c> program can be specified on
       the command line to
-      <seealso marker="erts:erl#erl"><c>erl(1)</c></seealso> as follows:</p>
+      <seealso marker="erts:erl"><c>erl(1)</c></seealso> as follows:</p>
 
     <pre>
 -rsh Program</pre>
 
+    <p>Note that the command specified with the <c>-rsh</c> flag is
+      treated as a file name which may contain spaces. It is thus not
+      possible to include any command line options. The remote node will
+      be launched as <c>"$RSH" "$REMOTE_HOSTNAME" erl -detached -noinput
+      ...</c>, so the
+      <c>erl</c> command must be found in the path on the remote host.</p>
+
     <p>The slave node is to use the same file system at the master. At
       least, Erlang/OTP is to be installed in the same place on both
       computers and the same version of Erlang is to be used.</p>
@@ -68,7 +75,7 @@
 
   <funcs>
     <func>
-      <name>pseudo([Master | ServerList]) -> ok</name>
+      <name since="">pseudo([Master | ServerList]) -> ok</name>
       <fsummary>Start a number of pseudo servers.</fsummary>
       <type>
         <v>Master = node()</v>
@@ -84,7 +91,7 @@
     </func>
 
     <func>
-      <name name="pseudo" arity="2"/>
+      <name name="pseudo" arity="2" since=""/>
       <fsummary>Start a number of pseudo servers.</fsummary>
       <desc>
         <p>Starts a number of pseudo servers. A pseudo server is a
@@ -102,7 +109,7 @@ rpc:call(N, slave, pseudo, [node(), [pxw_server]]).</code>
     </func>
 
     <func>
-      <name name="relay" arity="1"/>
+      <name name="relay" arity="1" since=""/>
       <fsummary>Run a pseudo server.</fsummary>
       <desc>
         <p>Runs a pseudo server. This function never returns any value
@@ -113,9 +120,9 @@ rpc:call(N, slave, pseudo, [node(), [pxw_server]]).</code>
     </func>
 
     <func>
-      <name name="start" arity="1"/>
-      <name name="start" arity="2"/>
-      <name name="start" arity="3"/>
+      <name name="start" arity="1" since=""/>
+      <name name="start" arity="2" since=""/>
+      <name name="start" arity="3" since=""/>
       <fsummary>Start a slave node on a host.</fsummary>
       <desc>
         <p>Starts a slave node on host <c><anno>Host</anno></c>. Host names
@@ -133,7 +140,7 @@ rpc:call(N, slave, pseudo, [node(), [pxw_server]]).</code>
         <p>Argument <c><anno>Args</anno></c> is used to set <c>erl</c>
           command-line arguments. If provided, it is passed to the new
           node and can be used for a variety of purposes; see
-          <seealso marker="erts:erl#erl"><c>erl(1)</c></seealso>.</p>
+          <seealso marker="erts:erl"><c>erl(1)</c></seealso>.</p>
         <p>As an example, suppose that you want to start a slave node at
           host <c>H</c> with node name <c>Name@H</c> and
           want the slave node to have the following properties:</p>
@@ -166,7 +173,9 @@ slave:start(H, Name, Arg).</code>
           </item>
           <tag><c>no_rsh</c></tag>
           <item>
-            <p>There is no <c>rsh</c> program on the computer.</p>
+            <p>No remote shell program was found on the computer. Note
+            that <c>ssh</c> is used by default, but this can be overridden
+            with the <c>-rsh</c> flag.</p>
           </item>
           <tag><c>{already_running, <anno>Node</anno>}</c></tag>
           <item>
@@ -178,9 +187,9 @@ slave:start(H, Name, Arg).</code>
     </func>
 
     <func>
-      <name name="start_link" arity="1"/>
-      <name name="start_link" arity="2"/>
-      <name name="start_link" arity="3"/>
+      <name name="start_link" arity="1" since=""/>
+      <name name="start_link" arity="2" since=""/>
+      <name name="start_link" arity="3" since=""/>
       <fsummary>Start and link to a slave node on a host.</fsummary>
       <desc>
         <p>Starts a slave node in the same way as <c>start/1,2,3</c>,
@@ -193,7 +202,7 @@ slave:start(H, Name, Arg).</code>
     </func>
 
     <func>
-      <name name="stop" arity="1"/>
+      <name name="stop" arity="1" since=""/>
       <fsummary>Stop (kill) a node.</fsummary>
       <desc>
         <p>Stops (kills) a node.</p>
diff --git a/lib/stdlib/doc/src/sofs.xml b/lib/stdlib/doc/src/sofs.xml
index 4cf1984d46..a0759d2f52 100644
--- a/lib/stdlib/doc/src/sofs.xml
+++ b/lib/stdlib/doc/src/sofs.xml
@@ -32,7 +32,7 @@
     <rev>PA1</rev>
     <file>sofs.xml</file>
   </header>
-  <module>sofs</module>
+  <module since="">sofs</module>
   <modulesummary>Functions for manipulating sets of sets.</modulesummary>
   <description>
     <p>This module provides operations on finite sets and
@@ -456,8 +456,8 @@ fun(S) -> sofs:partition(1, S) end
 
   <funcs>
     <func>
-      <name name="a_function" arity="1"/>
-      <name name="a_function" arity="2"/>
+      <name name="a_function" arity="1" since=""/>
+      <name name="a_function" arity="2" since=""/>
       <fsummary>Create a function.</fsummary>
       <desc>
         <p>Creates a <seealso marker="#function">function</seealso>.
@@ -470,7 +470,7 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="canonical_relation" arity="1"/>
+      <name name="canonical_relation" arity="1" since=""/>
       <fsummary>Return the canonical map.</fsummary>
       <desc>
         <p>Returns the binary relation containing the elements
@@ -490,7 +490,7 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="composite" arity="2"/>
+      <name name="composite" arity="2" since=""/>
       <fsummary>Return the composite of two functions.</fsummary>
       <desc>
         <p>Returns the <seealso marker="#composite">composite</seealso> of 
@@ -506,7 +506,7 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="constant_function" arity="2"/>
+      <name name="constant_function" arity="2" since=""/>
       <fsummary>Create the function that maps each element of a
         set onto another set.</fsummary>
       <desc>
@@ -522,7 +522,7 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="converse" arity="1"/>
+      <name name="converse" arity="1" since=""/>
       <fsummary>Return the converse of a binary relation.</fsummary>
       <desc>
         <p>Returns the <seealso marker="#converse">converse</seealso>
@@ -536,7 +536,7 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="difference" arity="2"/>
+      <name name="difference" arity="2" since=""/>
       <fsummary>Return the difference of two sets.</fsummary>
       <desc>
         <p>Returns the <seealso marker="#difference">difference</seealso> of
@@ -545,8 +545,8 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="digraph_to_family" arity="1"/>
-      <name name="digraph_to_family" arity="2"/>
+      <name name="digraph_to_family" arity="1" since=""/>
+      <name name="digraph_to_family" arity="2" since=""/>
       <fsummary>Create a family from a directed graph.</fsummary>
       <desc>
         <p>Creates a <seealso marker="#family">family</seealso> from
@@ -565,7 +565,7 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="domain" arity="1"/>
+      <name name="domain" arity="1" since=""/>
       <fsummary>Return the domain of a binary relation.</fsummary>
       <desc>
         <p>Returns the <seealso marker="#domain">domain</seealso> of
@@ -579,7 +579,7 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="drestriction" arity="2"/>
+      <name name="drestriction" arity="2" since=""/>
       <fsummary>Return a restriction of a binary relation.</fsummary>
       <desc>
         <p>Returns the difference between the binary relation
@@ -598,7 +598,7 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="drestriction" arity="3"/>
+      <name name="drestriction" arity="3" since=""/>
       <fsummary>Return a restriction of a relation.</fsummary>
       <desc>
         <p>Returns a subset of <c><anno>Set1</anno></c> containing those
@@ -618,7 +618,7 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="empty_set" arity="0"/>
+      <name name="empty_set" arity="0" since=""/>
       <fsummary>Return the untyped empty set.</fsummary>
       <desc>
         <p>Returns the <seealso marker="#sets_definition">untyped empty
@@ -628,7 +628,7 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="extension" arity="3"/>
+      <name name="extension" arity="3" since=""/>
       <fsummary>Extend the domain of a binary relation.</fsummary>
       <desc>
         <p>Returns the <seealso marker="#extension">extension</seealso> of
@@ -648,8 +648,8 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="family" arity="1"/>
-      <name name="family" arity="2"/>
+      <name name="family" arity="1" since=""/>
+      <name name="family" arity="2" since=""/>
       <fsummary>Create a family of subsets.</fsummary>
       <desc>
         <p>Creates a <seealso marker="#family">family of subsets</seealso>.
@@ -662,7 +662,7 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="family_difference" arity="2"/>
+      <name name="family_difference" arity="2" since=""/>
       <fsummary>Return the difference of two families.</fsummary>
       <desc>
         <p>If <c><anno>Family1</anno></c> and <c><anno>Family2</anno></c>
@@ -683,7 +683,7 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="family_domain" arity="1"/>
+      <name name="family_domain" arity="1" since=""/>
       <fsummary>Return a family of domains.</fsummary>
       <desc>
         <p>If <c><anno>Family1</anno></c> is
@@ -704,7 +704,7 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="family_field" arity="1"/>
+      <name name="family_field" arity="1" since=""/>
       <fsummary>Return a family of fields.</fsummary>
       <desc>
         <p>If <c><anno>Family1</anno></c> is
@@ -728,7 +728,7 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="family_intersection" arity="1"/>
+      <name name="family_intersection" arity="1" since=""/>
       <fsummary>Return the intersection of a family
          of sets of sets.</fsummary>
       <desc>
@@ -752,7 +752,7 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="family_intersection" arity="2"/>
+      <name name="family_intersection" arity="2" since=""/>
       <fsummary>Return the intersection of two families.</fsummary>
       <desc>
         <p>If <c><anno>Family1</anno></c> and <c><anno>Family2</anno></c>
@@ -772,7 +772,7 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="family_projection" arity="2"/>
+      <name name="family_projection" arity="2" since=""/>
       <fsummary>Return a family of modified subsets.</fsummary>
       <desc>
         <p>If <c><anno>Family1</anno></c> is
@@ -791,7 +791,7 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="family_range" arity="1"/>
+      <name name="family_range" arity="1" since=""/>
       <fsummary>Return a family of ranges.</fsummary>
       <desc>
         <p>If <c><anno>Family1</anno></c> is
@@ -812,7 +812,7 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="family_specification" arity="2"/>
+      <name name="family_specification" arity="2" since=""/>
       <fsummary>Select a subset of a family using a predicate.</fsummary>
       <desc>
         <p>If <c><anno>Family1</anno></c> is
@@ -837,8 +837,8 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="family_to_digraph" arity="1"/>
-      <name name="family_to_digraph" arity="2"/>
+      <name name="family_to_digraph" arity="1" since=""/>
+      <name name="family_to_digraph" arity="2" since=""/>
       <fsummary>Create a directed graph from a family.</fsummary>
       <desc>
         <p>Creates a directed graph from
@@ -863,7 +863,7 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="family_to_relation" arity="1"/>
+      <name name="family_to_relation" arity="1" since=""/>
       <fsummary>Create a binary relation from a family.</fsummary>
       <desc>
         <p>If <c><anno>Family</anno></c> is
@@ -881,7 +881,7 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="family_union" arity="1"/>
+      <name name="family_union" arity="1" since=""/>
       <fsummary>Return the union of a family of sets of sets.</fsummary>
       <desc>
         <p>If <c><anno>Family1</anno></c> is
@@ -904,7 +904,7 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="family_union" arity="2"/>
+      <name name="family_union" arity="2" since=""/>
       <fsummary>Return the union of two families.</fsummary>
       <desc>
         <p>If <c><anno>Family1</anno></c> and <c><anno>Family2</anno></c>
@@ -926,7 +926,7 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="field" arity="1"/>
+      <name name="field" arity="1" since=""/>
       <fsummary>Return the field of a binary relation.</fsummary>
       <desc>
         <p>Returns the <seealso marker="#field">field</seealso> of the
@@ -942,7 +942,7 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="from_external" arity="2"/>
+      <name name="from_external" arity="2" since=""/>
       <fsummary>Create a set.</fsummary>
       <desc>
         <p>Creates a set from the <seealso marker="#external_set">external 
@@ -955,7 +955,7 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="from_sets" arity="1" clause_i="1"/>
+      <name name="from_sets" arity="1" clause_i="1" since=""/>
       <fsummary>Create a set out of a list of sets.</fsummary>
       <desc>
         <p>Returns the <seealso marker="#sets_definition">unordered
@@ -971,7 +971,7 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="from_sets" arity="1" clause_i="2"/>
+      <name name="from_sets" arity="1" clause_i="2" since=""/>
       <fsummary>Create an ordered set out of a tuple of sets.</fsummary>
       <desc>
         <p>Returns the <seealso marker="#sets_definition">ordered
@@ -981,8 +981,8 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="from_term" arity="1"/>
-      <name name="from_term" arity="2"/>
+      <name name="from_term" arity="1" since=""/>
+      <name name="from_term" arity="2" since=""/>
       <fsummary>Create a set.</fsummary>
       <desc>
         <p><marker id="from_term"></marker>Creates an element
@@ -1031,7 +1031,7 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="image" arity="2"/>
+      <name name="image" arity="2" since=""/>
       <fsummary>Return the image of a set under a binary relation.</fsummary>
       <desc>
         <p>Returns the <seealso marker="#image">image</seealso> of
@@ -1047,7 +1047,7 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="intersection" arity="1"/>
+      <name name="intersection" arity="1" since=""/>
       <fsummary>Return the intersection of a set of sets.</fsummary>
       <desc>
         <p>Returns
@@ -1059,7 +1059,7 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="intersection" arity="2"/>
+      <name name="intersection" arity="2" since=""/>
       <fsummary>Return the intersection of two sets.</fsummary>
       <desc>
         <p>Returns
@@ -1069,7 +1069,7 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="intersection_of_family" arity="1"/>
+      <name name="intersection_of_family" arity="1" since=""/>
       <fsummary>Return the intersection of a family.</fsummary>
       <desc>
         <p>Returns the intersection of
@@ -1086,7 +1086,7 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="inverse" arity="1"/>
+      <name name="inverse" arity="1" since=""/>
       <fsummary>Return the inverse of a function.</fsummary>
       <desc>
         <p>Returns the <seealso marker="#inverse">inverse</seealso>
@@ -1100,7 +1100,7 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="inverse_image" arity="2"/>
+      <name name="inverse_image" arity="2" since=""/>
       <fsummary>Return the inverse image of a set under
         a binary relation.</fsummary>
       <desc>
@@ -1117,7 +1117,7 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="is_a_function" arity="1"/>
+      <name name="is_a_function" arity="1" since=""/>
       <fsummary>Test for a function.</fsummary>
       <desc>
         <p>Returns <c>true</c> if the binary relation <c><anno>BinRel</anno></c>
@@ -1127,7 +1127,7 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="is_disjoint" arity="2"/>
+      <name name="is_disjoint" arity="2" since=""/>
       <fsummary>Test for disjoint sets.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>Set1</anno></c>
@@ -1138,7 +1138,7 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="is_empty_set" arity="1"/>
+      <name name="is_empty_set" arity="1" since=""/>
       <fsummary>Test for an empty set.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>AnySet</anno></c> is an empty
@@ -1147,7 +1147,7 @@ fun(S) -> sofs:partition(1, S) end
     </func>
 
     <func>
-      <name name="is_equal" arity="2"/>
+      <name name="is_equal" arity="2" since=""/>
       <fsummary>Test two sets for equality.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>AnySet1</anno></c>
@@ -1164,7 +1164,7 @@ true</pre>
     </func>
 
     <func>
-      <name name="is_set" arity="1"/>
+      <name name="is_set" arity="1" since=""/>
       <fsummary>Test for an unordered set.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>AnySet</anno></c> is
@@ -1175,7 +1175,7 @@ true</pre>
     </func>
 
     <func>
-      <name name="is_sofs_set" arity="1"/>
+      <name name="is_sofs_set" arity="1" since=""/>
       <fsummary>Test for an unordered set.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>Term</anno></c> is
@@ -1185,7 +1185,7 @@ true</pre>
     </func>
 
     <func>
-      <name name="is_subset" arity="2"/>
+      <name name="is_subset" arity="2" since=""/>
       <fsummary>Test two sets for subset.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>Set1</anno></c> is
@@ -1195,7 +1195,7 @@ true</pre>
     </func>
 
     <func>
-      <name name="is_type" arity="1"/>
+      <name name="is_type" arity="1" since=""/>
       <fsummary>Test for a type.</fsummary>
       <desc>
         <p>Returns <c>true</c> if term <c><anno>Term</anno></c> is
@@ -1204,7 +1204,7 @@ true</pre>
     </func>
 
     <func>
-      <name name="join" arity="4"/>
+      <name name="join" arity="4" since=""/>
       <fsummary>Return the join of two relations.</fsummary>
       <desc>
         <p>Returns the <seealso marker="#natural_join">natural
@@ -1221,7 +1221,7 @@ true</pre>
     </func>
 
     <func>
-      <name name="multiple_relative_product" arity="2"/>
+      <name name="multiple_relative_product" arity="2" since=""/>
       <fsummary>Return the multiple relative product of a tuple of binary
         relations and a relation.</fsummary>
       <desc>
@@ -1242,7 +1242,7 @@ true</pre>
     </func>
 
     <func>
-      <name name="no_elements" arity="1"/>
+      <name name="no_elements" arity="1" since=""/>
       <fsummary>Return the number of elements of a set.</fsummary>
       <desc>
         <p>Returns the number of elements of the ordered or unordered
@@ -1251,7 +1251,7 @@ true</pre>
     </func>
 
     <func>
-      <name name="partition" arity="1"/>
+      <name name="partition" arity="1" since=""/>
       <fsummary>Return the coarsest partition given a set of sets.</fsummary>
       <desc>
         <p>Returns the <seealso marker="#partition">partition</seealso> of
@@ -1268,7 +1268,7 @@ true</pre>
     </func>
 
     <func>
-      <name name="partition" arity="2"/>
+      <name name="partition" arity="2" since=""/>
       <fsummary>Return a partition of a set.</fsummary>
       <desc>
         <p>Returns the <seealso marker="#partition">partition</seealso> of
@@ -1284,7 +1284,7 @@ true</pre>
     </func>
 
     <func>
-      <name name="partition" arity="3"/>
+      <name name="partition" arity="3" since=""/>
       <fsummary>Return a partition of a set.</fsummary>
       <desc>
         <p>Returns a pair of sets that, regarded as constituting a
@@ -1307,7 +1307,7 @@ true</pre>
     </func>
 
     <func>
-      <name name="partition_family" arity="2"/>
+      <name name="partition_family" arity="2" since=""/>
       <fsummary>Return a family indexing a partition.</fsummary>
       <desc>
         <p>Returns <seealso marker="#family">family</seealso>
@@ -1328,7 +1328,7 @@ true</pre>
     </func>
 
     <func>
-      <name name="product" arity="1"/>
+      <name name="product" arity="1" since=""/>
       <fsummary>Return the Cartesian product of a tuple of sets.</fsummary>
       <desc>
         <p>Returns the <seealso marker="#Cartesian_product_tuple">Cartesian
@@ -1347,7 +1347,7 @@ true</pre>
     </func>
 
     <func>
-      <name name="product" arity="2"/>
+      <name name="product" arity="2" since=""/>
       <fsummary>Return the Cartesian product of two sets.</fsummary>
       <desc>
         <p>Returns the <seealso marker="#Cartesian_product">Cartesian
@@ -1365,7 +1365,7 @@ true</pre>
     </func>
 
     <func>
-      <name name="projection" arity="2"/>
+      <name name="projection" arity="2" since=""/>
       <fsummary>Return a set of substituted elements.</fsummary>
       <desc>
         <p>Returns the set created by substituting each element of
@@ -1384,7 +1384,7 @@ true</pre>
     </func>
 
     <func>
-      <name name="range" arity="1"/>
+      <name name="range" arity="1" since=""/>
       <fsummary>Return the range of a binary relation.</fsummary>
       <desc>
         <p>Returns the <seealso marker="#range">range</seealso> of the
@@ -1398,8 +1398,8 @@ true</pre>
     </func>
 
     <func>
-      <name name="relation" arity="1"/>
-      <name name="relation" arity="2"/>
+      <name name="relation" arity="1" since=""/>
+      <name name="relation" arity="2" since=""/>
       <fsummary>Create a relation.</fsummary>
       <desc>
         <p>Creates a <seealso marker="#relation">relation</seealso>.
@@ -1417,7 +1417,7 @@ true</pre>
     </func>
 
     <func>
-      <name name="relation_to_family" arity="1"/>
+      <name name="relation_to_family" arity="1" since=""/>
       <fsummary>Create a family from a binary relation.</fsummary>
       <desc>
         <p>Returns <seealso marker="#family">family</seealso>
@@ -1435,8 +1435,8 @@ true</pre>
     </func>
 
     <func>
-      <name name="relative_product" arity="1"/>
-      <name name="relative_product" arity="2" clause_i="1"/>
+      <name name="relative_product" arity="1" since=""/>
+      <name name="relative_product" arity="2" clause_i="1" since=""/>
       <fsummary>Return the relative product of a list of binary relations
         and a binary relation.</fsummary>
       <desc>
@@ -1466,7 +1466,7 @@ true</pre>
     </func>
 
     <func>
-      <name name="relative_product" arity="2" clause_i="2"/>
+      <name name="relative_product" arity="2" clause_i="2" since=""/>
       <fsummary>Return the relative product of
         two binary relations.</fsummary>
       <desc>
@@ -1477,7 +1477,7 @@ true</pre>
     </func>
 
     <func>
-      <name name="relative_product1" arity="2"/>
+      <name name="relative_product1" arity="2" since=""/>
       <fsummary>Return the relative_product of
         two binary relations.</fsummary>
       <desc>
@@ -1498,7 +1498,7 @@ true</pre>
     </func>
 
     <func>
-      <name name="restriction" arity="2"/>
+      <name name="restriction" arity="2" since=""/>
       <fsummary>Return a restriction of a binary relation.</fsummary>
       <desc>
         <p>Returns the <seealso marker="#restriction">restriction</seealso> of
@@ -1514,7 +1514,7 @@ true</pre>
     </func>
 
     <func>
-      <name name="restriction" arity="3"/>
+      <name name="restriction" arity="3" since=""/>
       <fsummary>Return a restriction of a set.</fsummary>
       <desc>
         <p>Returns a subset of <c><anno>Set1</anno></c> containing those
@@ -1530,8 +1530,8 @@ true</pre>
     </func>
 
     <func>
-      <name name="set" arity="1"/>
-      <name name="set" arity="2"/>
+      <name name="set" arity="1" since=""/>
+      <name name="set" arity="2" since=""/>
       <fsummary>Create a set of atoms or any type of sets.</fsummary>
       <desc>
         <p>Creates an <seealso marker="#sets_definition">unordered
@@ -1543,7 +1543,7 @@ true</pre>
     </func>
 
     <func>
-      <name name="specification" arity="2"/>
+      <name name="specification" arity="2" since=""/>
       <fsummary>Select a subset using a predicate.</fsummary>
       <desc>
         <p>Returns the set containing every element
@@ -1564,7 +1564,7 @@ true</pre>
     </func>
 
     <func>
-      <name name="strict_relation" arity="1"/>
+      <name name="strict_relation" arity="1" since=""/>
       <fsummary>Return the strict relation corresponding to
         a given relation.</fsummary>
       <desc>
@@ -1580,7 +1580,7 @@ true</pre>
     </func>
 
     <func>
-      <name name="substitution" arity="2"/>
+      <name name="substitution" arity="2" since=""/>
       <fsummary>Return a function with a given set as domain.</fsummary>
       <desc>
         <p>Returns a function, the domain of which
@@ -1629,7 +1629,7 @@ images2(SetOfSets, BinRel) ->
     </func>
 
     <func>
-      <name name="symdiff" arity="2"/>
+      <name name="symdiff" arity="2" since=""/>
       <fsummary>Return the symmetric difference of two sets.</fsummary>
       <desc>
         <p>Returns the <seealso marker="#symmetric_difference">symmetric
@@ -1645,7 +1645,7 @@ images2(SetOfSets, BinRel) ->
     </func>
 
     <func>
-      <name name="symmetric_partition" arity="2"/>
+      <name name="symmetric_partition" arity="2" since=""/>
       <fsummary>Return a partition of two sets.</fsummary>
       <desc>
         <p>Returns a triple of sets:</p>
@@ -1666,7 +1666,7 @@ images2(SetOfSets, BinRel) ->
     </func>
 
     <func>
-      <name name="to_external" arity="1"/>
+      <name name="to_external" arity="1" since=""/>
       <fsummary>Return the elements of a set.</fsummary>
       <desc>
         <p>Returns the <seealso marker="#external_set">external
@@ -1675,7 +1675,7 @@ images2(SetOfSets, BinRel) ->
     </func>
 
     <func>
-      <name name="to_sets" arity="1"/>
+      <name name="to_sets" arity="1" since=""/>
       <fsummary>Return a list or a tuple of the elements of a set.</fsummary>
       <desc>
         <p>Returns the elements of the ordered set <c><anno>ASet</anno></c>
@@ -1686,7 +1686,7 @@ images2(SetOfSets, BinRel) ->
     </func>
 
     <func>
-      <name name="type" arity="1"/>
+      <name name="type" arity="1" since=""/>
       <fsummary>Return the type of a set.</fsummary>
       <desc>
         <p>Returns the <seealso marker="#type">type</seealso> of an
@@ -1695,7 +1695,7 @@ images2(SetOfSets, BinRel) ->
     </func>
 
     <func>
-      <name name="union" arity="1"/>
+      <name name="union" arity="1" since=""/>
       <fsummary>Return the union of a set of sets.</fsummary>
       <desc>
         <p>Returns the <seealso marker="#union_n">union</seealso> of the
@@ -1704,7 +1704,7 @@ images2(SetOfSets, BinRel) ->
     </func>
 
     <func>
-      <name name="union" arity="2"/>
+      <name name="union" arity="2" since=""/>
       <fsummary>Return the union of two sets.</fsummary>
       <desc>
         <p>Returns the <seealso marker="#union">union</seealso> of
@@ -1713,7 +1713,7 @@ images2(SetOfSets, BinRel) ->
     </func>
 
     <func>
-      <name name="union_of_family" arity="1"/>
+      <name name="union_of_family" arity="1" since=""/>
       <fsummary>Return the union of a family.</fsummary>
       <desc>
         <p>Returns the union of <seealso marker="#family">family</seealso>
@@ -1727,7 +1727,7 @@ images2(SetOfSets, BinRel) ->
     </func>
 
     <func>
-      <name name="weak_relation" arity="1"/>
+      <name name="weak_relation" arity="1" since=""/>
       <fsummary>Return the weak relation corresponding to
         a given relation.</fsummary>
       <desc>
diff --git a/lib/stdlib/doc/src/string.xml b/lib/stdlib/doc/src/string.xml
index 3348464eba..d102191a57 100644
--- a/lib/stdlib/doc/src/string.xml
+++ b/lib/stdlib/doc/src/string.xml
@@ -32,7 +32,7 @@
     <rev>A</rev>
     <file>string.xml</file>
   </header>
-  <module>string</module>
+  <module since="">string</module>
   <modulesummary>String processing functions.</modulesummary>
   <description>
     <p>This module provides functions for string processing.</p>
@@ -130,7 +130,7 @@
   <funcs>
 
     <func>
-      <name name="casefold" arity="1"/>
+      <name name="casefold" arity="1" since="OTP 20.0"/>
       <fsummary>Convert a string to a comparable string.</fsummary>
       <desc>
         <p>
@@ -147,7 +147,7 @@
     </func>
 
     <func>
-      <name name="chomp" arity="1"/>
+      <name name="chomp" arity="1" since="OTP 20.0"/>
       <fsummary>Remove trailing end of line control characters.</fsummary>
       <desc>
         <p>
@@ -164,9 +164,9 @@
     </func>
 
     <func>
-      <name name="equal" arity="2"/>
-      <name name="equal" arity="3"/>
-      <name name="equal" arity="4"/>
+      <name name="equal" arity="2" since=""/>
+      <name name="equal" arity="3" since="OTP 20.0"/>
+      <name name="equal" arity="4" since="OTP 20.0"/>
       <fsummary>Test string equality.</fsummary>
       <desc>
         <p>
@@ -201,8 +201,8 @@ true</pre>
     </func>
 
     <func>
-      <name name="find" arity="2"/>
-      <name name="find" arity="3"/>
+      <name name="find" arity="2" since="OTP 20.0"/>
+      <name name="find" arity="3" since="OTP 20.0"/>
       <fsummary>Find start of substring.</fsummary>
       <desc>
         <p>
@@ -230,7 +230,7 @@ nomatch</pre>
     </func>
 
     <func>
-      <name name="is_empty" arity="1"/>
+      <name name="is_empty" arity="1" since="OTP 20.0"/>
       <fsummary>Check if the string is empty.</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>String</anno></c> is the
@@ -245,7 +245,7 @@ true</pre>
     </func>
 
     <func>
-      <name name="length" arity="1"/>
+      <name name="length" arity="1" since="OTP 20.0"/>
       <fsummary>Calculate length of the string.</fsummary>
       <desc>
         <p>
@@ -261,7 +261,7 @@ true</pre>
     </func>
 
     <func>
-      <name name="lexemes" arity="2"/>
+      <name name="lexemes" arity="2" since="OTP 20.0"/>
       <fsummary>Split string into lexemes.</fsummary>
       <desc>
 	<p>
@@ -287,7 +287,7 @@ true</pre>
     </func>
 
     <func>
-      <name name="lowercase" arity="1"/>
+      <name name="lowercase" arity="1" since="OTP 20.0"/>
       <fsummary>Convert a string to lowercase</fsummary>
       <desc>
         <p>
@@ -306,7 +306,7 @@ true</pre>
     </func>
 
     <func>
-      <name name="next_codepoint" arity="1"/>
+      <name name="next_codepoint" arity="1" since="OTP 20.0"/>
       <fsummary>Pick the first codepoint.</fsummary>
       <desc>
         <p>
@@ -323,7 +323,7 @@ true</pre>
     </func>
 
     <func>
-      <name name="next_grapheme" arity="1"/>
+      <name name="next_grapheme" arity="1" since="OTP 20.0"/>
       <fsummary>Pick the first grapheme cluster.</fsummary>
       <desc>
         <p>
@@ -340,7 +340,7 @@ true</pre>
     </func>
 
     <func>
-      <name name="nth_lexeme" arity="3"/>
+      <name name="nth_lexeme" arity="3" since="OTP 20.0"/>
       <fsummary>Pick the nth lexeme.</fsummary>
       <desc>
 	<p>Returns lexeme number <c><anno>N</anno></c> in
@@ -355,9 +355,9 @@ true</pre>
     </func>
 
     <func>
-      <name name="pad" arity="2"/>
-      <name name="pad" arity="3"/>
-      <name name="pad" arity="4"/>
+      <name name="pad" arity="2" since="OTP 20.0"/>
+      <name name="pad" arity="3" since="OTP 20.0"/>
+      <name name="pad" arity="4" since="OTP 20.0"/>
       <fsummary>Pad a string to given length.</fsummary>
       <desc>
         <p>
@@ -381,7 +381,7 @@ true</pre>
     </func>
 
     <func>
-      <name name="prefix" arity="2"/>
+      <name name="prefix" arity="2" since="OTP 20.0"/>
       <fsummary>Remove prefix from string.</fsummary>
       <desc>
         <p>
@@ -400,8 +400,8 @@ nomatch</pre>
     </func>
 
     <func>
-      <name name="replace" arity="3"/>
-      <name name="replace" arity="4"/>
+      <name name="replace" arity="3" since="OTP 20.0"/>
+      <name name="replace" arity="4" since="OTP 20.0"/>
       <fsummary>Replace a pattern in string.</fsummary>
       <desc>
         <p>
@@ -423,7 +423,7 @@ nomatch</pre>
     </func>
 
     <func>
-      <name name="reverse" arity="1"/>
+      <name name="reverse" arity="1" since="OTP 20.0"/>
       <fsummary>Reverses a string</fsummary>
       <desc>
         <p>
@@ -439,8 +439,8 @@ ÖÄÅ</pre>
     </func>
 
     <func>
-      <name name="slice" arity="2"/>
-      <name name="slice" arity="3"/>
+      <name name="slice" arity="2" since="OTP 20.0"/>
+      <name name="slice" arity="3" since="OTP 20.0"/>
       <fsummary>Extract a part of string</fsummary>
       <desc>
 	<p>Returns a substring of <c><anno>String</anno></c> of
@@ -459,8 +459,8 @@ ÖÄÅ</pre>
     </func>
 
     <func>
-      <name name="split" arity="2"/>
-      <name name="split" arity="3"/>
+      <name name="split" arity="2" since="OTP 20.0"/>
+      <name name="split" arity="3" since="OTP 20.0"/>
       <fsummary>Split a string into substrings.</fsummary>
       <desc>
         <p>
@@ -482,9 +482,9 @@ ÖÄÅ</pre>
     </func>
 
     <func>
-      <name name="take" arity="2"/>
-      <name name="take" arity="3"/>
-      <name name="take" arity="4"/>
+      <name name="take" arity="2" since="OTP 20.0"/>
+      <name name="take" arity="3" since="OTP 20.0"/>
+      <name name="take" arity="4" since="OTP 20.0"/>
       <fsummary>Take leading or trailing parts.</fsummary>
       <desc>
         <p>Takes characters from <c><anno>String</anno></c> as long as
@@ -508,7 +508,7 @@ ÖÄÅ</pre>
     </func>
 
     <func>
-      <name name="titlecase" arity="1"/>
+      <name name="titlecase" arity="1" since="OTP 20.0"/>
       <fsummary>Convert a string to titlecase.</fsummary>
       <desc>
         <p>
@@ -522,7 +522,7 @@ ÖÄÅ</pre>
     </func>
 
     <func>
-      <name name="to_float" arity="1"/>
+      <name name="to_float" arity="1" since=""/>
       <fsummary>Return a float whose text representation is the integers
         (ASCII values) of a string.</fsummary>
       <desc>
@@ -544,7 +544,7 @@ ÖÄÅ</pre>
     </func>
 
     <func>
-      <name name="to_integer" arity="1"/>
+      <name name="to_integer" arity="1" since=""/>
       <fsummary>Return an integer whose text representation is the integers
         (ASCII values) of a string.</fsummary>
       <desc>
@@ -566,7 +566,7 @@ ÖÄÅ</pre>
     </func>
 
     <func>
-      <name name="to_graphemes" arity="1"/>
+      <name name="to_graphemes" arity="1" since="OTP 20.0"/>
       <fsummary>Convert a string to a list of grapheme clusters.</fsummary>
       <desc>
         <p>
@@ -582,9 +582,9 @@ ÖÄÅ</pre>
     </func>
 
     <func>
-      <name name="trim" arity="1"/>
-      <name name="trim" arity="2"/>
-      <name name="trim" arity="3"/>
+      <name name="trim" arity="1" since="OTP 20.0"/>
+      <name name="trim" arity="2" since="OTP 20.0"/>
+      <name name="trim" arity="3" since="OTP 20.0"/>
       <fsummary>Trim leading or trailing, or both, characters.</fsummary>
       <desc>
 	<p>
@@ -616,7 +616,7 @@ ÖÄÅ</pre>
     </func>
 
     <func>
-      <name name="uppercase" arity="1"/>
+      <name name="uppercase" arity="1" since="OTP 20.0"/>
       <fsummary>Convert a string to uppercase.</fsummary>
       <desc>
         <p>
@@ -649,8 +649,8 @@ ÖÄÅ</pre>
 
   <funcs>
     <func>
-      <name name="centre" arity="2"/>
-      <name name="centre" arity="3"/>
+      <name name="centre" arity="2" since=""/>
+      <name name="centre" arity="3" since=""/>
       <fsummary>Center a string.</fsummary>
       <desc>
         <p>Returns a string, where <c><anno>String</anno></c> is centered in the
@@ -664,8 +664,8 @@ ÖÄÅ</pre>
     </func>
 
     <func>
-      <name name="chars" arity="2"/>
-      <name name="chars" arity="3"/>
+      <name name="chars" arity="2" since=""/>
+      <name name="chars" arity="3" since=""/>
       <fsummary>Return a string consisting of numbers of characters.</fsummary>
       <desc>
         <p>Returns a string consisting of <c><anno>Number</anno></c> characters
@@ -678,7 +678,7 @@ ÖÄÅ</pre>
     </func>
 
     <func>
-      <name name="chr" arity="2"/>
+      <name name="chr" arity="2" since=""/>
       <fsummary>Return the index of the first occurrence of
         a character in a string.</fsummary>
       <desc>
@@ -692,7 +692,7 @@ ÖÄÅ</pre>
     </func>
 
     <func>
-      <name name="concat" arity="2"/>
+      <name name="concat" arity="2" since=""/>
       <fsummary>Concatenate two strings.</fsummary>
       <desc>
         <p>Concatenates <c><anno>String1</anno></c> and
@@ -712,7 +712,7 @@ ÖÄÅ</pre>
     </func>
 
     <func>
-      <name name="copies" arity="2"/>
+      <name name="copies" arity="2" since=""/>
       <fsummary>Copy a string.</fsummary>
       <desc>
         <p>Returns a string containing <c><anno>String</anno></c> repeated
@@ -724,7 +724,7 @@ ÖÄÅ</pre>
     </func>
 
     <func>
-      <name name="cspan" arity="2"/>
+      <name name="cspan" arity="2" since=""/>
       <fsummary>Span characters at start of a string.</fsummary>
       <desc>
         <p>Returns the length of the maximum initial segment of
@@ -741,7 +741,7 @@ ÖÄÅ</pre>
     </func>
 
     <func>
-      <name name="join" arity="2"/>
+      <name name="join" arity="2" since=""/>
       <fsummary>Join a list of strings with separator.</fsummary>
       <desc>
         <p>Returns a string with the elements of <c><anno>StringList</anno></c>
@@ -757,8 +757,8 @@ ÖÄÅ</pre>
     </func>
 
     <func>
-      <name name="left" arity="2"/>
-      <name name="left" arity="3"/>
+      <name name="left" arity="2" since=""/>
+      <name name="left" arity="3" since=""/>
       <fsummary>Adjust left end of a string.</fsummary>
       <desc>
         <p>Returns <c><anno>String</anno></c> with the length adjusted in
@@ -778,7 +778,7 @@ ÖÄÅ</pre>
     </func>
 
     <func>
-      <name name="len" arity="1"/>
+      <name name="len" arity="1" since=""/>
       <fsummary>Return the length of a string.</fsummary>
       <desc>
         <p>Returns the number of characters in <c><anno>String</anno></c>.</p>
@@ -789,7 +789,7 @@ ÖÄÅ</pre>
     </func>
 
     <func>
-      <name name="rchr" arity="2"/>
+      <name name="rchr" arity="2" since=""/>
       <fsummary>Return the index of the last occurrence of
         a character in a string.</fsummary>
       <desc>
@@ -803,8 +803,8 @@ ÖÄÅ</pre>
     </func>
 
     <func>
-      <name name="right" arity="2"/>
-      <name name="right" arity="3"/>
+      <name name="right" arity="2" since=""/>
+      <name name="right" arity="3" since=""/>
       <fsummary>Adjust right end of a string.</fsummary>
       <desc>
         <p>Returns <c><anno>String</anno></c> with the length adjusted in
@@ -823,7 +823,7 @@ ÖÄÅ</pre>
     </func>
 
     <func>
-      <name name="rstr" arity="2"/>
+      <name name="rstr" arity="2" since=""/>
       <fsummary>Find the index of a substring.</fsummary>
       <desc>
         <p>Returns the position where the last occurrence of
@@ -841,7 +841,7 @@ ÖÄÅ</pre>
     </func>
 
     <func>
-      <name name="span" arity="2"/>
+      <name name="span" arity="2" since=""/>
       <fsummary>Span characters at start of a string.</fsummary>
       <desc>
         <p>Returns the length of the maximum initial segment of
@@ -858,7 +858,7 @@ ÖÄÅ</pre>
     </func>
 
     <func>
-      <name name="str" arity="2"/>
+      <name name="str" arity="2" since=""/>
       <fsummary>Find the index of a substring.</fsummary>
       <desc>
         <p>Returns the position where the first occurrence of
@@ -876,9 +876,9 @@ ÖÄÅ</pre>
     </func>
 
     <func>
-      <name name="strip" arity="1"/>
-      <name name="strip" arity="2"/>
-      <name name="strip" arity="3"/>
+      <name name="strip" arity="1" since=""/>
+      <name name="strip" arity="2" since=""/>
+      <name name="strip" arity="3" since=""/>
       <fsummary>Strip leading or trailing characters.</fsummary>
       <desc>
         <p>Returns a string, where leading or trailing, or both, blanks or a
@@ -898,8 +898,8 @@ ÖÄÅ</pre>
     </func>
 
     <func>
-      <name name="sub_string" arity="2"/>
-      <name name="sub_string" arity="3"/>
+      <name name="sub_string" arity="2" since=""/>
+      <name name="sub_string" arity="3" since=""/>
       <fsummary>Extract a substring.</fsummary>
       <desc>
         <p>Returns a substring of <c><anno>String</anno></c>, starting at
@@ -916,8 +916,8 @@ sub_string("Hello World", 4, 8).
     </func>
 
     <func>
-      <name name="substr" arity="2"/>
-      <name name="substr" arity="3"/>
+      <name name="substr" arity="2" since=""/>
+      <name name="substr" arity="3" since=""/>
       <fsummary>Return a substring of a string.</fsummary>
       <desc>
         <p>Returns a substring of <c><anno>String</anno></c>, starting at
@@ -934,8 +934,8 @@ sub_string("Hello World", 4, 8).
     </func>
 
     <func>
-      <name name="sub_word" arity="2"/>
-      <name name="sub_word" arity="3"/>
+      <name name="sub_word" arity="2" since=""/>
+      <name name="sub_word" arity="3" since=""/>
       <fsummary>Extract subword.</fsummary>
       <desc>
         <p>Returns the word in position <c><anno>Number</anno></c> of
@@ -952,10 +952,10 @@ sub_string("Hello World", 4, 8).
     </func>
 
     <func>
-      <name name="to_lower" arity="1" clause_i="1"/>
-      <name name="to_lower" arity="1" clause_i="2"/>
-      <name name="to_upper" arity="1" clause_i="1"/>
-      <name name="to_upper" arity="1" clause_i="2"/>
+      <name name="to_lower" arity="1" clause_i="1" since=""/>
+      <name name="to_lower" arity="1" clause_i="2" since=""/>
+      <name name="to_upper" arity="1" clause_i="1" since=""/>
+      <name name="to_upper" arity="1" clause_i="2" since=""/>
       <fsummary>Convert case of string (ISO/IEC 8859-1).</fsummary>
       <type variable="String" name_i="1"/>
       <type variable="Result" name_i="1"/>
@@ -974,7 +974,7 @@ sub_string("Hello World", 4, 8).
     </func>
 
     <func>
-      <name name="tokens" arity="2"/>
+      <name name="tokens" arity="2" since=""/>
       <fsummary>Split string into tokens.</fsummary>
       <desc>
         <p>Returns a list of tokens in <c><anno>String</anno></c>, separated
@@ -994,8 +994,8 @@ sub_string("Hello World", 4, 8).
     </func>
 
     <func>
-      <name name="words" arity="1"/>
-      <name name="words" arity="2"/>
+      <name name="words" arity="1" since=""/>
+      <name name="words" arity="2" since=""/>
       <fsummary>Count blank separated words.</fsummary>
       <desc>
         <p>Returns the number of words in <c><anno>String</anno></c>, separated
diff --git a/lib/stdlib/doc/src/supervisor.xml b/lib/stdlib/doc/src/supervisor.xml
index 5fd5760499..f15b1a2dd3 100644
--- a/lib/stdlib/doc/src/supervisor.xml
+++ b/lib/stdlib/doc/src/supervisor.xml
@@ -28,7 +28,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>supervisor</module>
+  <module since="">supervisor</module>
   <modulesummary>Generic supervisor behavior.</modulesummary>
   <description>
     <p>This behavior module provides a supervisor, a process that
@@ -318,7 +318,7 @@ child_spec() = #{id => child_id(),       % mandatory
 
   <funcs>
     <func>
-      <name name="check_childspecs" arity="1"/>
+      <name name="check_childspecs" arity="1" since=""/>
       <fsummary>Check if children specifications are syntactically correct.
       </fsummary>
       <desc>
@@ -329,7 +329,7 @@ child_spec() = #{id => child_id(),       % mandatory
     </func>
 
     <func>
-      <name name="count_children" arity="1"/>
+      <name name="count_children" arity="1" since="OTP R13B04"/>
       <fsummary>Return counts for the number of child specifications,
         active children, supervisors, and workers.</fsummary>
       <desc>
@@ -366,7 +366,7 @@ child_spec() = #{id => child_id(),       % mandatory
     </func>
 
     <func>
-      <name name="delete_child" arity="2"/>
+      <name name="delete_child" arity="2" since=""/>
       <fsummary>Delete a child specification from a supervisor.</fsummary>
       <desc>
         <p>Tells supervisor <c><anno>SupRef</anno></c> to delete the child
@@ -387,7 +387,7 @@ child_spec() = #{id => child_id(),       % mandatory
     </func>
 
     <func>
-      <name name="get_childspec" arity="2"/>
+      <name name="get_childspec" arity="2" since="OTP 18.0"/>
       <fsummary>Return the child specification map for the specified
         child.</fsummary>
       <desc>
@@ -400,7 +400,7 @@ child_spec() = #{id => child_id(),       % mandatory
     </func>
 
     <func>
-      <name name="restart_child" arity="2"/>
+      <name name="restart_child" arity="2" since=""/>
       <fsummary>Restart a terminated child process belonging to a supervisor.
       </fsummary>
       <desc>
@@ -436,7 +436,7 @@ child_spec() = #{id => child_id(),       % mandatory
     </func>
 
     <func>
-      <name name="start_child" arity="2"/>
+      <name name="start_child" arity="2" since=""/>
       <fsummary>Dynamically add a child process to a supervisor.</fsummary>
       <type name="startchild_ret"/>
       <type name="startchild_err"/>
@@ -503,8 +503,8 @@ child_spec() = #{id => child_id(),       % mandatory
     </func>
 
     <func>
-      <name name="start_link" arity="2"/>
-      <name name="start_link" arity="3"/>
+      <name name="start_link" arity="2" since=""/>
+      <name name="start_link" arity="3" since=""/>
       <fsummary>Create a supervisor process.</fsummary>
       <type name="startlink_ret"/>
       <type name="startlink_err"/>
@@ -584,7 +584,7 @@ child_spec() = #{id => child_id(),       % mandatory
     </func>
 
     <func>
-      <name name="terminate_child" arity="2"/>
+      <name name="terminate_child" arity="2" since=""/>
       <fsummary>Terminate a child process belonging to a supervisor.</fsummary>
       <desc>
         <p>Tells supervisor <c><anno>SupRef</anno></c> to terminate the
@@ -621,7 +621,7 @@ child_spec() = #{id => child_id(),       % mandatory
     </func>
 
     <func>
-      <name name="which_children" arity="1"/>
+      <name name="which_children" arity="1" since=""/>
       <fsummary>Return information about all children specifications and
         child processes belonging to a supervisor.</fsummary>
       <desc>
@@ -666,7 +666,7 @@ child_spec() = #{id => child_id(),       % mandatory
 
   <funcs>
     <func>
-      <name>Module:init(Args) -> Result</name>
+      <name since="">Module:init(Args) -> Result</name>
       <fsummary>Return a supervisor specification.</fsummary>
       <type>
         <v>Args = term()</v>
diff --git a/lib/stdlib/doc/src/supervisor_bridge.xml b/lib/stdlib/doc/src/supervisor_bridge.xml
index c4c1b37548..ee5d97fea1 100644
--- a/lib/stdlib/doc/src/supervisor_bridge.xml
+++ b/lib/stdlib/doc/src/supervisor_bridge.xml
@@ -30,7 +30,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>supervisor_bridge</module>
+  <module since="">supervisor_bridge</module>
   <modulesummary>Generic supervisor bridge behavior.</modulesummary>
   <description>
     <p>This behavior module provides a supervisor bridge, a process
@@ -57,8 +57,8 @@
 
   <funcs>
     <func>
-      <name name="start_link" arity="2"/>
-      <name name="start_link" arity="3"/>
+      <name name="start_link" arity="2" since=""/>
+      <name name="start_link" arity="3" since=""/>
       <fsummary>Create a supervisor bridge process.</fsummary>
       <desc>
         <p>Creates a supervisor bridge process, linked to the calling process,
@@ -133,7 +133,7 @@
 
   <funcs>
     <func>
-      <name>Module:init(Args) -> Result</name>
+      <name since="">Module:init(Args) -> Result</name>
       <fsummary>Initialize process and start subsystem.</fsummary>
       <type>
         <v>Args = term()</v>
@@ -164,7 +164,7 @@
     </func>
 
     <func>
-      <name>Module:terminate(Reason, State)</name>
+      <name since="">Module:terminate(Reason, State)</name>
       <fsummary>Clean up and stop subsystem.</fsummary>
       <type>
         <v>Reason = shutdown | term()</v>
diff --git a/lib/stdlib/doc/src/sys.xml b/lib/stdlib/doc/src/sys.xml
index 9fe816e33a..e22ca89ef5 100644
--- a/lib/stdlib/doc/src/sys.xml
+++ b/lib/stdlib/doc/src/sys.xml
@@ -4,7 +4,7 @@
 <erlref>
   <header>
     <copyright>
-      <year>1996</year><year>2018</year>
+      <year>1996</year><year>2019</year>
       <holder>Ericsson AB. All Rights Reserved.</holder>
     </copyright>
     <legalnotice>
@@ -32,7 +32,7 @@
     <rev></rev>
     <file>sys.xml</file>
   </header>
-  <module>sys</module>
+  <module since="">sys</module>
   <modulesummary>A functional interface to system messages.</modulesummary>
   <description>
     <p>This module contains functions for sending system messages used by
@@ -114,6 +114,154 @@
     </datatype>
     <datatype>
       <name name="system_event"/>
+      <desc>
+	<taglist>
+	  <tag><c>{in,<anno>Msg</anno>}</c></tag>
+	  <item>
+	    <p>
+	      Is produced by <c>gen_server</c> and <c>gen_event</c>
+	      when the message <c>Msg</c> arrives.
+	    </p>
+	  </item>
+	  <tag><c>{in,<anno>Msg</anno>,<anno>State</anno>}</c></tag>
+	  <item>
+	    <p>
+	      Is produced by <c>gen_statem</c>
+	      when the message <c>Msg</c> arrives in state <c>State</c>.
+	    </p>
+	    <p>
+	      For <c>gen_statem</c> the <c><anno>Msg</anno></c> term is
+	      an <c>{EventType,EventContent}</c> tuple.
+	    </p>
+	  </item>
+	  <tag><c>{out,<anno>Msg</anno>,<anno>To</anno>}</c></tag>
+	  <item>
+	    <p>
+	      Is produced by <c>gen_statem</c> when the reply <c>Msg</c>
+	      is sent back to <c>To</c> by returning
+	      a <c>{reply,To,Msg}</c> action from the callback module.
+	    </p>
+	    <p>
+	      <c><anno>To</anno></c> is of the same type
+	      as the first argument to <c>gen_statem:reply/2</c>.
+	    </p>
+	  </item>
+	  <tag>
+	    <c>{out,<anno>Msg</anno>,<anno>To</anno>,<anno>State</anno>}</c>
+	  </tag>
+	  <item>
+	    <p>
+	      Is produced by <c>gen_server</c>
+	      when the reply <c><anno>Msg</anno></c>
+	      is sent back to <c><anno>To</anno></c>
+	      by returning a <c>{reply,...}</c> tuple
+	      from the callback module.
+	    </p>
+	    <p>
+	      <c><anno>To</anno></c> is of the same type
+	      as the first argument to <c>gen_server:reply/2</c>.
+	    </p>
+	    <p>
+	      <c><anno>State</anno></c> is the new server state.
+	    </p>
+	  </item>
+	  <tag>
+	    <c>{noreply,<anno>State</anno>}</c>
+	  </tag>
+	  <item>
+	    <p>
+	      Is produced by <c>gen_server</c>
+	      when a <c>{noreply,...}</c> tuple is returned
+	      from the callback module.
+	    </p>
+	    <p>
+	      <c><anno>State</anno></c> is the new server state.
+	    </p>
+	  </item>
+	  <tag>
+	    <c>{continue,<anno>Continuation</anno>}</c>
+	  </tag>
+	  <item>
+	    <p>
+	      Is produced by <c>gen_server</c>
+	      when a <c>{continue,<anno>Continuation</anno>}</c>
+	      tuple is returned from the callback module.
+	    </p>
+	  </item>
+	  <tag>
+	    <c>{code_change,<anno>Event</anno>,<anno>State</anno>}</c>
+	  </tag>
+	  <item>
+	    <p>
+	      Is produced by <c>gen_statem</c>
+	      when the message <c><anno>Event</anno></c>
+	      arrives in state <c><anno>State</anno></c>
+	      as the first event after a code change.
+	    </p>
+	    <p>
+	      <c><anno>Event</anno></c> is
+	      an <c>{EventType,EventContent}</c> tuple.
+	    </p>
+	  </item>
+	  <tag>
+	    <c>
+	      {postpone,<anno>Event</anno>,<anno>State</anno>,<anno>NextState</anno>}
+	    </c>
+	  </tag>
+	  <item>
+	    <p>
+	      Is produced by <c>gen_statem</c>
+	      when the message <c><anno>Event</anno></c>
+	      is postponed in state <c><anno>State</anno></c>.
+	      <c><anno>NextState</anno></c> is the new state.
+	    </p>
+	    <p>
+	      <c><anno>Event</anno></c> is
+	      an <c>{EventType,EventContent}</c> tuple.
+	    </p>
+	  </item>
+	  <tag>
+	    <c>
+	      {consume,<anno>Event</anno>,<anno>State</anno>,<anno>NextState</anno>}
+	    </c>
+	  </tag>
+	  <item>
+	    <p>
+	      Is produced by <c>gen_statem</c>
+	      when the message <c><anno>Event</anno></c>
+	      is consumed in state <c><anno>State</anno></c>.
+	      <c><anno>NextState</anno></c> is the new state.
+	    </p>
+	    <p>
+	      <c><anno>Event</anno></c> is
+	      an <c>{EventType,EventContent}</c> tuple.
+	    </p>
+	  </item>
+	  <tag>
+	    <c>
+	      {enter,<anno>State</anno>}
+	    </c>
+	  </tag>
+	  <item>
+	    <p>
+	      Is produced by <c>gen_statem</c>
+	      when the first state <c><anno>State</anno></c> is entered.
+	    </p>
+	  </item>
+	  <tag>
+	    <c>
+	      {terminate,<anno>Reason</anno>,<anno>State</anno>}
+	    </c>
+	  </tag>
+	  <item>
+	    <p>
+	      Is produced by <c>gen_statem</c>
+	      when it terminates with reason <c><anno>Reason</anno></c>
+	      in state <c><anno>State</anno></c>.
+	    </p>
+	  </item>
+	</taglist>
+      </desc>
     </datatype>
     <datatype>
       <name name="dbg_opt"/>
@@ -123,14 +271,17 @@
       <name name="dbg_fun"/>
     </datatype>
     <datatype>
+      <name name="debug_option"/>
+    </datatype>
+    <datatype>
       <name name="format_fun"/>
     </datatype>
   </datatypes>
 
   <funcs>
     <func>
-      <name name="change_code" arity="4"/>
-      <name name="change_code" arity="5"/>
+      <name name="change_code" arity="4" since=""/>
+      <name name="change_code" arity="5" since=""/>
       <fsummary>Send the code change system message to the process.</fsummary>
       <desc>
         <p>Tells the process to change code. The process must be
@@ -143,8 +294,8 @@
     </func>
 
     <func>
-      <name name="get_state" arity="1"/>
-      <name name="get_state" arity="2"/>
+      <name name="get_state" arity="1" since="OTP R16B01"/>
+      <name name="get_state" arity="2" since="OTP R16B01"/>
       <fsummary>Get the state of the process.</fsummary>
       <desc>
         <p>Gets the state of the process.</p>
@@ -227,8 +378,8 @@
     </func>
 
     <func>
-      <name name="get_status" arity="1"/>
-      <name name="get_status" arity="2"/>
+      <name name="get_status" arity="1" since=""/>
+      <name name="get_status" arity="2" since=""/>
       <fsummary>Get the status of the process.</fsummary>
       <desc>
         <p>Gets the status of the process.</p>
@@ -265,8 +416,8 @@
     </func>
 
     <func>
-      <name name="install" arity="2"/>
-      <name name="install" arity="3"/>
+      <name name="install" arity="2" since=""/>
+      <name name="install" arity="3" since=""/>
       <fsummary>Install a debug function in the process.</fsummary>
       <desc>
         <p>Enables installation of alternative debug functions. An example of
@@ -283,8 +434,8 @@
     </func>
 
     <func>
-      <name name="log" arity="2"/>
-      <name name="log" arity="3"/>
+      <name name="log" arity="2" since=""/>
+      <name name="log" arity="3" since=""/>
       <fsummary>Log system events in memory.</fsummary>
       <desc>
         <p>Turns the logging of system events on or off. If on, a
@@ -302,8 +453,8 @@
     </func>
 
     <func>
-      <name name="log_to_file" arity="2"/>
-      <name name="log_to_file" arity="3"/>
+      <name name="log_to_file" arity="2" since=""/>
+      <name name="log_to_file" arity="3" since=""/>
       <fsummary>Log system events to the specified file.</fsummary>
       <desc>
         <p>Enables or disables the logging of all system events in text
@@ -315,8 +466,8 @@
     </func>
 
     <func>
-      <name name="no_debug" arity="1"/>
-      <name name="no_debug" arity="2"/>
+      <name name="no_debug" arity="1" since=""/>
+      <name name="no_debug" arity="2" since=""/>
       <fsummary>Turn off debugging.</fsummary>
       <desc>
         <p>Turns off all debugging for the process. This includes
@@ -327,8 +478,8 @@
     </func>
 
     <func>
-      <name name="remove" arity="2"/>
-      <name name="remove" arity="3"/>
+      <name name="remove" arity="2" since=""/>
+      <name name="remove" arity="3" since=""/>
       <fsummary>Remove a debug function from the process.</fsummary>
       <desc>
         <p>Removes an installed debug function from the
@@ -338,8 +489,8 @@
     </func>
 
     <func>
-      <name name="replace_state" arity="2"/>
-      <name name="replace_state" arity="3"/>
+      <name name="replace_state" arity="2" since="OTP R16B01"/>
+      <name name="replace_state" arity="3" since="OTP R16B01"/>
       <fsummary>Replace the state of the process.</fsummary>
       <desc>
         <p>Replaces the state of the process, and returns the new state.</p>
@@ -451,8 +602,8 @@
     </func>
 
     <func>
-      <name name="resume" arity="1"/>
-      <name name="resume" arity="2"/>
+      <name name="resume" arity="1" since=""/>
+      <name name="resume" arity="2" since=""/>
       <fsummary>Resume a suspended process.</fsummary>
       <desc>
         <p>Resumes a suspended process.</p>
@@ -460,8 +611,8 @@
     </func>
 
     <func>
-      <name name="statistics" arity="2"/>
-      <name name="statistics" arity="3"/>
+      <name name="statistics" arity="2" since=""/>
+      <name name="statistics" arity="3" since=""/>
       <fsummary>Enable or disable the collections of statistics.</fsummary>
       <desc>
         <p>Enables or disables the collection of statistics. If 
@@ -471,8 +622,8 @@
     </func>
 
     <func>
-      <name name="suspend" arity="1"/>
-      <name name="suspend" arity="2"/>
+      <name name="suspend" arity="1" since=""/>
+      <name name="suspend" arity="2" since=""/>
       <fsummary>Suspend the process.</fsummary>
       <desc>
         <p>Suspends the process. When the process is suspended, it
@@ -482,8 +633,8 @@
     </func>
 
     <func>
-      <name name="terminate" arity="2"/>
-      <name name="terminate" arity="3"/>
+      <name name="terminate" arity="2" since="OTP 18.0"/>
+      <name name="terminate" arity="3" since="OTP 18.0"/>
       <fsummary>Terminate the process.</fsummary>
       <desc>
         <p>Orders the process to terminate with the
@@ -494,8 +645,8 @@
     </func>
 
     <func>
-      <name name="trace" arity="2"/>
-      <name name="trace" arity="3"/>
+      <name name="trace" arity="2" since=""/>
+      <name name="trace" arity="3" since=""/>
       <fsummary>Print all system events on <c>standard_io</c>.</fsummary>
       <desc>
         <p>Prints all system events on <c>standard_io</c>. The events are
@@ -518,7 +669,7 @@
 
   <funcs>
     <func>
-      <name name="debug_options" arity="1"/>
+      <name name="debug_options" arity="1" since=""/>
       <fsummary>Convert a list of options to a debug structure.</fsummary>
       <desc>
         <p>Can be used by a process that initiates a debug
@@ -529,9 +680,15 @@
     </func>
 
     <func>
-      <name name="get_debug" arity="3"/>
+      <name name="get_debug" arity="3" since=""/>
       <fsummary>Get the data associated with a debug option.</fsummary>
       <desc>
+	<warning>
+	  <p>
+	    <c>get_debug/3</c> is deprecated since it returns
+	    data of an internal type only useful for debugging.
+	  </p>
+	</warning>
         <p>Gets the data associated with a debug option.
           <c><anno>Default</anno></c>
           is returned if <c><anno>Item</anno></c> is not found. Can be
@@ -541,7 +698,7 @@
     </func>
 
     <func>
-      <name name="handle_debug" arity="4"/>
+      <name name="handle_debug" arity="4" since=""/>
       <fsummary>Generate a system event.</fsummary>
       <desc>
         <p>This function is called by a process when it generates a
@@ -556,7 +713,7 @@
     </func>
 
     <func>
-      <name name="handle_system_msg" arity="6"/>
+      <name name="handle_system_msg" arity="6" since=""/>
       <fsummary>Take care of system messages.</fsummary>
       <desc>
         <p>This function is used by a process module to take care of system
@@ -594,7 +751,7 @@
     </func>
 
     <func>
-      <name name="print_log" arity="1"/>
+      <name name="print_log" arity="1" since=""/>
       <fsummary>Print the logged events in the debug structure.</fsummary>
       <desc>
         <p>Prints the logged system events in the debug structure,
@@ -605,7 +762,19 @@
     </func>
 
     <func>
-      <name>Module:system_code_change(Misc, Module, OldVsn, Extra) ->
+      <name name="get_log" arity="1" since="OTP-22.0"/>
+      <fsummary>Return the logged events in the debug structure.</fsummary>
+      <desc>
+        <p>
+	  Returns the logged system events in the debug structure,
+	  that is the last argument to
+          <seealso marker="#handle_debug/4"><c>handle_debug/4</c></seealso>.
+	</p>
+      </desc>
+    </func>
+
+    <func>
+      <name since="">Module:system_code_change(Misc, Module, OldVsn, Extra) ->
         {ok, NMisc}</name>
       <fsummary>Called when the process is to perform a code change.</fsummary>
       <type>
@@ -628,7 +797,7 @@
     </func>
 
     <func>
-      <name>Module:system_continue(Parent, Debug, Misc) -> none()</name>
+      <name since="">Module:system_continue(Parent, Debug, Misc) -> none()</name>
       <fsummary>Called when the process is to continue its execution.</fsummary>
       <type>
         <v>Parent = pid()</v>
@@ -644,7 +813,7 @@
     </func>
 
     <func>
-      <name>Module:system_get_state(Misc) -> {ok, State}</name>
+      <name since="OTP 17.0">Module:system_get_state(Misc) -> {ok, State}</name>
       <fsummary>Called when the process is to return its current state.
       </fsummary>
       <type>
@@ -661,7 +830,7 @@
     </func>
 
     <func>
-      <name>Module:system_replace_state(StateFun, Misc) ->
+      <name since="OTP 17.0">Module:system_replace_state(StateFun, Misc) ->
         {ok, NState, NMisc}</name>
       <fsummary>Called when the process is to replace its current state.
       </fsummary>
@@ -681,7 +850,7 @@
     </func>
 
     <func>
-      <name>Module:system_terminate(Reason, Parent, Debug, Misc) -> none()</name>
+      <name since="">Module:system_terminate(Reason, Parent, Debug, Misc) -> none()</name>
       <fsummary>Called when the process is to terminate.</fsummary>
       <type>
         <v>Reason = term()</v>
diff --git a/lib/stdlib/doc/src/timer.xml b/lib/stdlib/doc/src/timer.xml
index e913e33589..165eecfbb0 100644
--- a/lib/stdlib/doc/src/timer.xml
+++ b/lib/stdlib/doc/src/timer.xml
@@ -32,7 +32,7 @@
     <rev>D</rev>
     <file>timer.xml</file>
   </header>
-  <module>timer</module>
+  <module since="">timer</module>
   <modulesummary>Timer functions.</modulesummary>
   <description>
     <p>This module provides useful functions related to time. Unless otherwise
@@ -62,7 +62,7 @@
 
   <funcs>
     <func>
-      <name name="apply_after" arity="4"/>
+      <name name="apply_after" arity="4" since=""/>
       <fsummary>Apply <c>Module:Function(Arguments)</c> after a specified
         <c>Time</c>.</fsummary>
       <desc>
@@ -75,7 +75,7 @@
     </func>
 
     <func>
-      <name name="apply_interval" arity="4"/>
+      <name name="apply_interval" arity="4" since=""/>
       <fsummary>Evaluate <c>Module:Function(Arguments)</c> repeatedly at
         intervals of <c>Time</c>.</fsummary>
       <desc>
@@ -88,7 +88,7 @@
     </func>
 
     <func>
-      <name name="cancel" arity="1"/>
+      <name name="cancel" arity="1" since=""/>
       <fsummary>Cancel a previously requested time-out identified by
         <c>TRef</c>.</fsummary>
       <desc>
@@ -101,8 +101,8 @@
     </func>
 
     <func>
-      <name name="exit_after" arity="2"/>
-      <name name="exit_after" arity="3"/>
+      <name name="exit_after" arity="2" since=""/>
+      <name name="exit_after" arity="3" since=""/>
       <fsummary>Send an exit signal with <c>Reason</c> after a specified
         <c>Time</c>.</fsummary>
       <desc>
@@ -117,7 +117,7 @@
     </func>
 
     <func>
-      <name name="hms" arity="3"/>
+      <name name="hms" arity="3" since=""/>
       <fsummary>Convert <c>Hours</c>+<c>Minutes</c>+<c>Seconds</c> to
         <c>Milliseconds</c>.</fsummary>
       <desc>
@@ -127,7 +127,7 @@
     </func>
 
     <func>
-      <name name="hours" arity="1"/>
+      <name name="hours" arity="1" since=""/>
       <fsummary>Convert <c>Hours</c> to <c>Milliseconds</c>.</fsummary>
       <desc>
         <p>Returns the number of milliseconds in <c><anno>Hours</anno></c>.</p>
@@ -135,8 +135,8 @@
     </func>
 
     <func>
-      <name name="kill_after" arity="1"/>
-      <name name="kill_after" arity="2"/>
+      <name name="kill_after" arity="1" since=""/>
+      <name name="kill_after" arity="2" since=""/>
       <fsummary>Send an exit signal with <c>Reason</c> after a specified
         <c>Time</c>.</fsummary>
       <desc>
@@ -148,7 +148,7 @@
     </func>
 
     <func>
-      <name name="minutes" arity="1"/>
+      <name name="minutes" arity="1" since=""/>
       <fsummary>Converts <c>Minutes</c> to <c>Milliseconds</c>.</fsummary>
       <desc>
         <p>Returns the number of milliseconds in
@@ -157,7 +157,7 @@
     </func>
 
     <func>
-      <name name="now_diff" arity="2"/>
+      <name name="now_diff" arity="2" since=""/>
       <fsummary>Calculate time difference between time stamps.</fsummary>
       <type_desc variable="Tdiff">In microseconds</type_desc>
       <desc>
@@ -173,7 +173,7 @@
     </func>
 
     <func>
-      <name name="seconds" arity="1"/>
+      <name name="seconds" arity="1" since=""/>
       <fsummary>Convert <c>Seconds</c> to <c>Milliseconds</c>.</fsummary>
       <desc>
         <p>Returns the number of milliseconds in
@@ -182,8 +182,8 @@
     </func>
 
     <func>
-      <name name="send_after" arity="2"/>
-      <name name="send_after" arity="3"/>
+      <name name="send_after" arity="2" since=""/>
+      <name name="send_after" arity="3" since=""/>
       <fsummary>Send <c>Message</c> to <c>Pid</c> after a specified
         <c>Time</c>.</fsummary>
       <desc>
@@ -206,8 +206,8 @@
     </func>
 
     <func>
-      <name name="send_interval" arity="2"/>
-      <name name="send_interval" arity="3"/>
+      <name name="send_interval" arity="2" since=""/>
+      <name name="send_interval" arity="3" since=""/>
       <fsummary>Send <c>Message</c> repeatedly at intervals of <c>Time</c>.
       </fsummary>
       <desc>
@@ -231,7 +231,7 @@
     </func>
 
     <func>
-      <name name="sleep" arity="1"/>
+      <name name="sleep" arity="1" since=""/>
       <fsummary>Suspend the calling process for <c>Time</c> milliseconds.
       </fsummary>
       <desc>
@@ -244,7 +244,7 @@
     </func>
 
     <func>
-      <name name="start" arity="0"/>
+      <name name="start" arity="0" since=""/>
       <fsummary>Start a global timer server (named <c>timer_server</c>).
       </fsummary>
       <desc>
@@ -258,9 +258,9 @@
     </func>
 
     <func>
-      <name name="tc" arity="1"/>
-      <name name="tc" arity="2"/>
-      <name name="tc" arity="3"/>
+      <name name="tc" arity="1" since="OTP R14B03"/>
+      <name name="tc" arity="2" since="OTP R14B"/>
+      <name name="tc" arity="3" since=""/>
       <fsummary>Measure the real time it takes to evaluate <c>apply(Module,
         Function, Arguments)</c> or <c>apply(Fun, Arguments)</c>.</fsummary>
       <type_desc variable="Time">In microseconds</type_desc>
diff --git a/lib/stdlib/doc/src/unicode.xml b/lib/stdlib/doc/src/unicode.xml
index d822aca89c..b7696a4b7e 100644
--- a/lib/stdlib/doc/src/unicode.xml
+++ b/lib/stdlib/doc/src/unicode.xml
@@ -30,7 +30,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>unicode</module>
+  <module since="">unicode</module>
   <modulesummary>Functions for converting Unicode characters.</modulesummary>
   <description>
   <p>This module contains functions for converting between different character 
@@ -139,7 +139,7 @@
 
   <funcs>
     <func>
-      <name name="bom_to_encoding" arity="1"/>
+      <name name="bom_to_encoding" arity="1" since=""/>
       <fsummary>Identify UTF byte order marks in a binary.</fsummary>
       <type name="endian"/>
       <type_desc variable="Bin">
@@ -156,7 +156,7 @@
     </func>
 
     <func>
-     <name name="characters_to_binary" arity="1"/>
+     <name name="characters_to_binary" arity="1" since=""/>
       <fsummary>Convert a collection of characters to a UTF-8 binary.</fsummary>
       <desc>
         <p>Same as <c>characters_to_binary(<anno>Data</anno>, unicode,
@@ -165,7 +165,7 @@
     </func>
 
     <func>    
-     <name name="characters_to_binary" arity="2"/>
+     <name name="characters_to_binary" arity="2" since=""/>
       <fsummary>Convert a collection of characters to a UTF-8 binary.</fsummary>
       <desc>
         <p>Same as <c>characters_to_binary(<anno>Data</anno>, 
@@ -174,7 +174,7 @@
     </func>
 
     <func>
-      <name name="characters_to_binary" arity="3"/>
+      <name name="characters_to_binary" arity="3" since=""/>
       <fsummary>Convert a collection of characters to a UTF-8 binary.</fsummary>
       <desc>
         <p>Behaves as <seealso marker="#characters_to_list/2">
@@ -211,7 +211,7 @@
     </func>
 
     <func>
-      <name name="characters_to_list" arity="1"/>
+      <name name="characters_to_list" arity="1" since=""/>
       <fsummary>Convert a collection of characters to a list of Unicode
         characters.</fsummary>
       <desc>
@@ -220,7 +220,7 @@
     </func>
 
     <func>
-      <name name="characters_to_list" arity="2"/>
+      <name name="characters_to_list" arity="2" since=""/>
       <fsummary>Convert a collection of characters to a list of Unicode
         characters.</fsummary>
       <desc>
@@ -367,7 +367,7 @@ decode_data(Data) ->
     </func>
 
     <func>
-      <name name="characters_to_nfc_list" arity="1"/>
+      <name name="characters_to_nfc_list" arity="1" since="OTP 20.0"/>
       <fsummary>Normalize characters to a list of canonical equivalent
       composed Unicode characters.</fsummary>
       <desc>
@@ -386,7 +386,7 @@ decode_data(Data) ->
     </func>
 
     <func>
-      <name name="characters_to_nfc_binary" arity="1"/>
+      <name name="characters_to_nfc_binary" arity="1" since="OTP 20.0"/>
       <fsummary>Normalize characters to a utf8 binary of canonical equivalent
       composed Unicode characters.</fsummary>
       <desc>
@@ -404,7 +404,7 @@ decode_data(Data) ->
     </func>
 
     <func>
-      <name name="characters_to_nfd_list" arity="1"/>
+      <name name="characters_to_nfd_list" arity="1" since="OTP 20.0"/>
       <fsummary>Normalize characters to a list of canonical equivalent
       decomposed Unicode characters.</fsummary>
       <desc>
@@ -423,7 +423,7 @@ decode_data(Data) ->
     </func>
 
     <func>
-      <name name="characters_to_nfd_binary" arity="1"/>
+      <name name="characters_to_nfd_binary" arity="1" since="OTP 20.0"/>
       <fsummary>Normalize characters to a utf8 binary of canonical equivalent
       decomposed Unicode characters.</fsummary>
       <desc>
@@ -441,7 +441,7 @@ decode_data(Data) ->
     </func>
 
     <func>
-      <name name="characters_to_nfkc_list" arity="1"/>
+      <name name="characters_to_nfkc_list" arity="1" since="OTP 20.0"/>
       <fsummary>Normalize characters to a list of canonical equivalent
       composed Unicode characters.</fsummary>
       <desc>
@@ -460,7 +460,7 @@ decode_data(Data) ->
     </func>
 
     <func>
-      <name name="characters_to_nfkc_binary" arity="1"/>
+      <name name="characters_to_nfkc_binary" arity="1" since="OTP 20.0"/>
       <fsummary>Normalize characters to a utf8 binary of compatibly equivalent
       composed Unicode characters.</fsummary>
       <desc>
@@ -478,7 +478,7 @@ decode_data(Data) ->
     </func>
 
     <func>
-      <name name="characters_to_nfkd_list" arity="1"/>
+      <name name="characters_to_nfkd_list" arity="1" since="OTP 20.0"/>
       <fsummary>Normalize characters to a list of compatibly equivalent
       decomposed Unicode characters.</fsummary>
       <desc>
@@ -497,7 +497,7 @@ decode_data(Data) ->
     </func>
 
     <func>
-      <name name="characters_to_nfkd_binary" arity="1"/>
+      <name name="characters_to_nfkd_binary" arity="1" since="OTP 20.0"/>
       <fsummary>Normalize characters to a utf8 binary of compatibly equivalent
       decomposed Unicode characters.</fsummary>
       <desc>
@@ -515,7 +515,7 @@ decode_data(Data) ->
     </func>
 
     <func>
-      <name name="encoding_to_bom" arity="1"/>
+      <name name="encoding_to_bom" arity="1" since=""/>
       <fsummary>Create a binary UTF byte order mark from encoding.</fsummary>
       <type_desc variable="Bin">
         A <c>binary()</c> such that <c>byte_size(<anno>Bin</anno>) >= 4</c>.
diff --git a/lib/stdlib/doc/src/uri_string.xml b/lib/stdlib/doc/src/uri_string.xml
index 88d4600611..ad443486c5 100644
--- a/lib/stdlib/doc/src/uri_string.xml
+++ b/lib/stdlib/doc/src/uri_string.xml
@@ -27,7 +27,7 @@
     <date>2018-02-07</date>
     <rev>A</rev>
   </header>
-  <module>uri_string</module>
+  <module since="OTP 21.0">uri_string</module>
   <modulesummary>URI processing functions.</modulesummary>
   <description>
     <p>This module contains functions for parsing and handling URIs
@@ -150,7 +150,7 @@
   <funcs>
 
     <func>
-      <name name="compose_query" arity="1"/>
+      <name name="compose_query" arity="1" since="OTP 21.0"/>
       <fsummary>Compose urlencoded query string.</fsummary>
       <desc>
         <p>Composes a form-urlencoded <c><anno>QueryString</anno></c> based on a
@@ -176,7 +176,7 @@
     </func>
 
     <func>
-      <name name="compose_query" arity="2"/>
+      <name name="compose_query" arity="2" since="OTP 21.0"/>
       <fsummary>Compose urlencoded query string.</fsummary>
       <desc>
         <p>Same as <c>compose_query/1</c> but with an additional
@@ -210,7 +210,7 @@
     </func>
 
     <func>
-      <name name="dissect_query" arity="1"/>
+      <name name="dissect_query" arity="1" since="OTP 21.0"/>
       <fsummary>Dissect query string.</fsummary>
       <desc>
         <p>Dissects an urlencoded <c><anno>QueryString</anno></c> and returns a
@@ -236,7 +236,7 @@
     </func>
 
     <func>
-      <name name="normalize" arity="1"/>
+      <name name="normalize" arity="1" since="OTP 21.0"/>
       <fsummary>Syntax-based normalization.</fsummary>
       <desc>
         <p>Transforms an <c><anno>URI</anno></c> into a normalized form
@@ -261,7 +261,7 @@
     </func>
 
     <func>
-      <name name="normalize" arity="2"/>
+      <name name="normalize" arity="2" since="OTP 21.0"/>
       <fsummary>Syntax-based normalization.</fsummary>
       <desc>
 	<p>Same as <c>normalize/1</c> but with an additional
@@ -285,7 +285,7 @@
     </func>
 
     <func>
-      <name name="parse" arity="1"/>
+      <name name="parse" arity="1" since="OTP 21.0"/>
       <fsummary>Parse URI into a map.</fsummary>
       <desc>
         <p>Parses an <url href="https://www.ietf.org/rfc/rfc3986.txt">RFC 3986</url>
@@ -309,7 +309,7 @@
     </func>
 
     <func>
-      <name name="recompose" arity="1"/>
+      <name name="recompose" arity="1" since="OTP 21.0"/>
       <fsummary>Recompose URI.</fsummary>
       <desc>
         <p>Creates an <url href="https://www.ietf.org/rfc/rfc3986.txt">RFC 3986</url> compliant
@@ -332,7 +332,7 @@
     </func>
 
     <func>
-      <name name="transcode" arity="2"/>
+      <name name="transcode" arity="2" since="OTP 21.0"/>
       <fsummary>Transcode URI.</fsummary>
       <desc>
         <p>Transcodes an <url href="https://www.ietf.org/rfc/rfc3986.txt">RFC 3986</url>
diff --git a/lib/stdlib/doc/src/win32reg.xml b/lib/stdlib/doc/src/win32reg.xml
index f4a4fa1626..5e2aed6062 100644
--- a/lib/stdlib/doc/src/win32reg.xml
+++ b/lib/stdlib/doc/src/win32reg.xml
@@ -32,7 +32,7 @@
     <rev>PA1</rev>
     <file>win32reg.xml</file>
   </header>
-  <module>win32reg</module>
+  <module since="">win32reg</module>
   <modulesummary>Provides access to the registry on Windows.</modulesummary>
   <description>
     <p>This module provides read and write access to the
@@ -112,7 +112,7 @@ hkdd             HKEY_DYN_DATA</pre>
 
   <funcs>
     <func>
-      <name name="change_key" arity="2"/>
+      <name name="change_key" arity="2" since=""/>
       <fsummary>Move to a key in the registry.</fsummary>
       <desc>
         <p>Changes the current key to another key. Works like <c>cd</c>.
@@ -122,7 +122,7 @@ hkdd             HKEY_DYN_DATA</pre>
     </func>
 
     <func>
-      <name name="change_key_create" arity="2"/>
+      <name name="change_key_create" arity="2" since=""/>
       <fsummary>Move to a key, create it if it is not there.</fsummary>
       <desc>
         <p>Creates a key, or just changes to it, if it is already there. Works
@@ -133,7 +133,7 @@ hkdd             HKEY_DYN_DATA</pre>
     </func>
 
     <func>
-      <name name="close" arity="1"/>
+      <name name="close" arity="1" since=""/>
       <fsummary>Close the registry.</fsummary>
       <desc>
         <p>Closes the registry. After that, the <c><anno>RegHandle</anno></c>
@@ -142,7 +142,7 @@ hkdd             HKEY_DYN_DATA</pre>
     </func>
 
     <func>
-      <name name="current_key" arity="1"/>
+      <name name="current_key" arity="1" since=""/>
       <fsummary>Return the path to the current key.</fsummary>
       <desc>
         <p>Returns the path to the current key. This is the equivalent of
@@ -153,7 +153,7 @@ hkdd             HKEY_DYN_DATA</pre>
     </func>
 
     <func>
-      <name name="delete_key" arity="1"/>
+      <name name="delete_key" arity="1" since=""/>
       <fsummary>Delete the current key.</fsummary>
       <desc>
         <p>Deletes the current key, if it is valid. Calls the Win32 API
@@ -166,7 +166,7 @@ hkdd             HKEY_DYN_DATA</pre>
     </func>
 
     <func>
-      <name name="delete_value" arity="2"/>
+      <name name="delete_value" arity="2" since=""/>
       <fsummary>Delete the named value on the current key.</fsummary>
       <desc>
         <p>Deletes a named value on the current key. The atom <c>default</c> is
@@ -176,7 +176,7 @@ hkdd             HKEY_DYN_DATA</pre>
     </func>
 
     <func>
-      <name name="expand" arity="1"/>
+      <name name="expand" arity="1" since=""/>
       <fsummary>Expand a string with environment variables.</fsummary>
       <desc>
         <p>Expands a string containing environment variables between percent
@@ -189,7 +189,7 @@ hkdd             HKEY_DYN_DATA</pre>
     </func>
 
     <func>
-      <name name="format_error" arity="1"/>
+      <name name="format_error" arity="1" since=""/>
       <fsummary>Convert a POSIX error code to a string.</fsummary>
       <desc>
         <p>Converts a POSIX error code to a string
@@ -198,7 +198,7 @@ hkdd             HKEY_DYN_DATA</pre>
     </func>
 
     <func>
-      <name name="open" arity="1"/>
+      <name name="open" arity="1" since=""/>
       <fsummary>Open the registry for reading or writing.</fsummary>
       <desc>
         <p>Opens the registry for reading or writing. The current key is the
@@ -211,7 +211,7 @@ hkdd             HKEY_DYN_DATA</pre>
     </func>
 
     <func>
-      <name name="set_value" arity="3"/>
+      <name name="set_value" arity="3" since=""/>
       <fsummary>Set value at the current registry key with specified name.
       </fsummary>
       <desc>
@@ -230,7 +230,7 @@ hkdd             HKEY_DYN_DATA</pre>
     </func>
 
     <func>
-      <name name="sub_keys" arity="1"/>
+      <name name="sub_keys" arity="1" since=""/>
       <fsummary>Get subkeys to the current key.</fsummary>
       <desc>
         <p>Returns a list of subkeys to the current key. Calls the Win32
@@ -240,7 +240,7 @@ hkdd             HKEY_DYN_DATA</pre>
     </func>
 
     <func>
-      <name name="value" arity="2"/>
+      <name name="value" arity="2" since=""/>
       <fsummary>Get the named value on the current key.</fsummary>
       <desc>
         <p>Retrieves the named value (or default) on the current key.
@@ -251,7 +251,7 @@ hkdd             HKEY_DYN_DATA</pre>
     </func>
 
     <func>
-      <name name="values" arity="1"/>
+      <name name="values" arity="1" since=""/>
       <fsummary>Get all values on the current key.</fsummary>
       <desc>
         <p>Retrieves a list of all values on the current key. The values
diff --git a/lib/stdlib/doc/src/zip.xml b/lib/stdlib/doc/src/zip.xml
index 0b5eac1e16..bb2ed7727a 100644
--- a/lib/stdlib/doc/src/zip.xml
+++ b/lib/stdlib/doc/src/zip.xml
@@ -32,7 +32,7 @@
     <rev>PA1</rev>
     <file>zip.xml</file>
   </header>
-  <module>zip</module>
+  <module since="">zip</module>
   <modulesummary>Utility for reading and creating 'zip' archives.
   </modulesummary>
   <description>
@@ -180,7 +180,7 @@
 
   <funcs>
     <func>
-      <name name="foldl" arity="3"/>
+      <name name="foldl" arity="3" since="OTP R14B"/>
       <fsummary>Fold a function over all files in a zip archive.</fsummary>
       <desc>
         <p>Calls <c><anno>Fun</anno>(<anno>FileInArchive</anno>, <anno>GetInfo
@@ -234,10 +234,10 @@
     </func>
 
     <func>
-      <name name="list_dir" arity="1"/>
-      <name name="list_dir" arity="2"/>
-      <name name="table" arity="1" />
-      <name name="table" arity="2"/>
+      <name name="list_dir" arity="1" since=""/>
+      <name name="list_dir" arity="2" since=""/>
+      <name name="table" arity="1"  since=""/>
+      <name name="table" arity="2" since=""/>
       <fsummary>Retrieve the name of all files in a zip archive.</fsummary>
       <desc>
         <p><c>list_dir/1</c> retrieves all filenames in the zip archive
@@ -263,7 +263,7 @@
     </func>
 
     <func>
-      <name name="t" arity="1"/>
+      <name name="t" arity="1" since=""/>
       <fsummary>Print the name of each file in a zip archive.</fsummary>
       <desc>
         <p>Prints all filenames in the zip archive <c><anno>Archive</anno></c>
@@ -272,7 +272,7 @@
     </func>
 
     <func>
-      <name name="tt" arity="1"/>
+      <name name="tt" arity="1" since=""/>
       <fsummary>Print name and information for each file in a zip archive.
       </fsummary>
       <desc>
@@ -283,10 +283,10 @@
     </func>
 
     <func>
-      <name name="unzip" arity="1"/>
-      <name name="unzip" arity="2"/>
-      <name name="extract" arity="1"/>
-      <name name="extract" arity="2"/>
+      <name name="unzip" arity="1" since=""/>
+      <name name="unzip" arity="2" since=""/>
+      <name name="extract" arity="1" since=""/>
+      <name name="extract" arity="2" since=""/>
       <fsummary>Extract files from a zip archive.</fsummary>
       <desc>
         <p><c>unzip/1</c> extracts all files from a zip archive.</p>
@@ -353,10 +353,10 @@
     </func>
 
     <func>
-      <name name="zip" arity="2"/>
-      <name name="zip" arity="3"/>
-      <name name="create" arity="2"/>
-      <name name="create" arity="3"/>
+      <name name="zip" arity="2" since=""/>
+      <name name="zip" arity="3" since=""/>
+      <name name="create" arity="2" since=""/>
+      <name name="create" arity="3" since=""/>
       <fsummary>Create a zip archive with options.</fsummary>
       <desc>
         <p>Creates a zip archive containing the files specified in
@@ -481,7 +481,7 @@
     </func>
 
     <func>
-      <name name="zip_close" arity="1"/>
+      <name name="zip_close" arity="1" since=""/>
       <fsummary>Close an open archive.</fsummary>
       <desc>
         <p>Closes a zip archive, previously opened with
@@ -492,8 +492,8 @@
     </func>
 
     <func>
-      <name name="zip_get" arity="1"/>
-      <name name="zip_get" arity="2"/>
+      <name name="zip_get" arity="1" since=""/>
+      <name name="zip_get" arity="2" since=""/>
       <fsummary>Extract files from an open archive.</fsummary>
       <desc>
         <p>Extracts one or all files from an open archive.</p>
@@ -505,7 +505,7 @@
     </func>
 
     <func>
-      <name name="zip_list_dir" arity="1"/>
+      <name name="zip_list_dir" arity="1" since=""/>
       <fsummary>Return a table of files in open zip archive.</fsummary>
       <desc>
         <p>Returns the file list of an open zip archive. The first returned
@@ -514,8 +514,8 @@
     </func>
 
     <func>
-      <name name="zip_open" arity="1"/>
-      <name name="zip_open" arity="2"/>
+      <name name="zip_open" arity="1" since=""/>
+      <name name="zip_open" arity="2" since=""/>
       <fsummary>Open an archive and return a handle to it.</fsummary>
       <desc>
         <p>Opens a zip archive, and reads and saves its directory. This
diff --git a/lib/stdlib/include/assert.hrl b/lib/stdlib/include/assert.hrl
index 2ec89e7d8a..28d25c6589 100644
--- a/lib/stdlib/include/assert.hrl
+++ b/lib/stdlib/include/assert.hrl
@@ -140,7 +140,7 @@
 -endif.
 
 %% This is mostly a convenience which gives more detailed reports.
-%% Note: Guard is a guarded pattern, and can not be used for value.
+%% Note: Guard is a guarded pattern, and cannot be used for value.
 -ifdef(NOASSERT).
 -define(assertMatch(Guard, Expr), ok).
 -define(assertMatch(Guard, Expr, Comment), ok).
@@ -289,7 +289,7 @@
         end).
 -endif.
 
-%% Note: Class and Term are patterns, and can not be used for value.
+%% Note: Class and Term are patterns, and cannot be used for value.
 %% Term can be a guarded pattern, but Class cannot.
 -ifdef(NOASSERT).
 -define(assertException(Class, Term, Expr), ok).
@@ -364,7 +364,7 @@
         ?assertException(throw, Term, Expr, Comment)).
 
 %% This is the inverse case of assertException, for convenience.
-%% Note: Class and Term are patterns, and can not be used for value.
+%% Note: Class and Term are patterns, and cannot be used for value.
 %% Both Class and Term can be guarded patterns.
 -ifdef(NOASSERT).
 -define(assertNotException(Class, Term, Expr), ok).
diff --git a/lib/stdlib/src/Makefile b/lib/stdlib/src/Makefile
index c95f7637f7..86003c953d 100644
--- a/lib/stdlib/src/Makefile
+++ b/lib/stdlib/src/Makefile
@@ -155,8 +155,10 @@ APPUP_TARGET= $(EBIN)/$(APPUP_FILE)
 
 ifeq ($(NATIVE_LIBS_ENABLED),yes)
 ERL_COMPILE_FLAGS += +native
+else
+ERL_COMPILE_FLAGS += -Werror
 endif
-ERL_COMPILE_FLAGS += -I../include -I../../kernel/include -Werror
+ERL_COMPILE_FLAGS += -I../include -I../../kernel/include
 
 # ----------------------------------------------------
 # Targets
diff --git a/lib/stdlib/src/array.erl b/lib/stdlib/src/array.erl
index 939b1fb488..1504326c61 100644
--- a/lib/stdlib/src/array.erl
+++ b/lib/stdlib/src/array.erl
@@ -126,11 +126,12 @@
 %% per write than base 10, but the speedup is only 21%.)
 
 -define(DEFAULT, undefined).
--define(LEAFSIZE, 10).		% the "base"
--define(NODESIZE, ?LEAFSIZE).   % (no reason to have a different size)
+-define(LEAFSIZE, 10).         % the "base" (assumed to be > 1)
+-define(NODESIZE, ?LEAFSIZE).  % must not be LEAFSIZE-1; keep same as leaf
 -define(NODEPATTERN(S), {_,_,_,_,_,_,_,_,_,_,S}). % NODESIZE+1 elements!
--define(NEW_NODE(S),  % beware of argument duplication!
-	setelement((?NODESIZE+1),erlang:make_tuple((?NODESIZE+1),(S)),(S))).
+-define(NEW_NODE(E,S),  % general case (currently unused)
+        setelement((?NODESIZE+1),erlang:make_tuple((?NODESIZE+1),(E)),(S))).
+-define(NEW_NODE(S), erlang:make_tuple((?NODESIZE+1),(S))).  % when E = S
 -define(NEW_LEAF(D), erlang:make_tuple(?LEAFSIZE,(D))).
 -define(NODELEAFS, ?NODESIZE*?LEAFSIZE).
 
@@ -605,7 +606,7 @@ grow(I, E, M) ->
     grow_1(I, E, M).
 
 grow_1(I, E, M) when I >= M ->
-    grow(I, setelement(1, ?NEW_NODE(M), E), ?extend(M));
+    grow_1(I, setelement(1, ?NEW_NODE(M), E), ?extend(M));
 grow_1(_I, E, M) ->
     {E, M}.
 
@@ -1631,12 +1632,11 @@ foldl_test_() ->
      ?_assert(foldl(Sum, 0, from_list(lists:seq(0,10))) =:= 55),
      ?_assert(foldl(Reverse, [], from_list(lists:seq(0,1000)))
 	      =:= lists:reverse(lists:seq(0,1000))),
-     ?_assert({999,[N0*100+1+2,N0*2+1+1,0]} =:= 
-	      foldl(Vals, {0,[]}, 
+     ?_assertEqual({N0*100+1-2,[N0*100+1+2,N0*2+1+1,0]},
+	      foldl(Vals, {0,[]},
 		    set(N0*100+1,2,
 			set(N0*2+1,1,
 			    set(0,0,new())))))
-     
     ].
 -endif.
 
@@ -1786,12 +1786,11 @@ foldr_test_() ->
      ?_assert(foldr(Sum, 0, from_list(lists:seq(0,10))) =:= 55),
      ?_assert(foldr(List, [], from_list(lists:seq(0,1000)))
  	      =:= lists:seq(0,1000)),
-     ?_assert({999,[0,N0*2+1+1,N0*100+1+2]} =:= 
-	      foldr(Vals, {0,[]}, 
+     ?_assertEqual({N0*100+1-2,[0,N0*2+1+1,N0*100+1+2]},
+	      foldr(Vals, {0,[]},
 		    set(N0*100+1,2,
 			set(N0*2+1,1,
 			    set(0,0,new())))))
-     
     ].
 -endif.
 
diff --git a/lib/stdlib/src/beam_lib.erl b/lib/stdlib/src/beam_lib.erl
index 3386cfcbe6..aa992f17ab 100644
--- a/lib/stdlib/src/beam_lib.erl
+++ b/lib/stdlib/src/beam_lib.erl
@@ -32,8 +32,12 @@
 	 all_chunks/1,
 	 diff_dirs/2,
 	 strip/1,
+	 strip/2,
 	 strip_files/1,
+	 strip_files/2,
 	 strip_release/1,
+	 strip_release/2,
+	 significant_chunks/0,
 	 build_module/1,
 	 version/1,
 	 md5/1,
@@ -188,7 +192,16 @@ diff_dirs(Dir1, Dir2) ->
       Beam2 :: beam().
 
 strip(FileName) ->
-    try strip_file(FileName)
+    strip(FileName, []).
+
+-spec strip(Beam1, AdditionalChunks) ->
+        {'ok', {module(), Beam2}} | {'error', 'beam_lib', info_rsn()} when
+      Beam1 :: beam(),
+      AdditionalChunks :: [chunkid()],
+      Beam2 :: beam().
+
+strip(FileName, AdditionalChunks) ->
+    try strip_file(FileName, AdditionalChunks)
     catch Error -> Error end.
     
 -spec strip_files(Files) ->
@@ -196,8 +209,17 @@ strip(FileName) ->
       Files :: [beam()],
       Beam :: beam().
 
-strip_files(Files) when is_list(Files) ->
-    try strip_fils(Files)
+strip_files(Files) ->
+    strip_files(Files, []).
+
+-spec strip_files(Files, AdditionalChunks) ->
+        {'ok', [{module(), Beam}]} | {'error', 'beam_lib', info_rsn()} when
+      Files :: [beam()],
+      AdditionalChunks :: [chunkid()],
+      Beam :: beam().
+
+strip_files(Files, AdditionalChunks) when is_list(Files) ->
+    try strip_fils(Files, AdditionalChunks)
     catch Error -> Error end.
 
 -spec strip_release(Dir) ->
@@ -207,7 +229,17 @@ strip_files(Files) when is_list(Files) ->
       Reason :: {'not_a_directory', term()} | info_rsn().
 
 strip_release(Root) ->
-    catch strip_rel(Root).
+    strip_release(Root, []).
+
+-spec strip_release(Dir, AdditionalChunks) ->
+        {'ok', [{module(), file:filename()}]}
+      | {'error', 'beam_lib', Reason} when
+      Dir :: atom() | file:filename(),
+      AdditionalChunks :: [chunkid()],
+      Reason :: {'not_a_directory', term()} | info_rsn().
+
+strip_release(Root, AdditionalChunks) ->
+    catch strip_rel(Root, AdditionalChunks).
 
 -spec version(Beam) ->
                      {'ok', {module(), [Version :: term()]}} |
@@ -401,17 +433,17 @@ cmp_lists([{Id, C1} | R1], [{Id, C2} | R2]) ->
 cmp_lists(_, _) ->
     error(different_chunks).
     
-strip_rel(Root) ->
+strip_rel(Root, AdditionalChunks) ->
     ok = assert_directory(Root),
-    strip_fils(filelib:wildcard(filename:join(Root, "lib/*/ebin/*.beam"))).
+    strip_fils(filelib:wildcard(filename:join(Root, "lib/*/ebin/*.beam")), AdditionalChunks).
 
 %% -> {ok, [{Mod, BinaryOrFileName}]} | throw(Error)
-strip_fils(Files) ->
-    {ok, [begin {ok, Reply} = strip_file(F), Reply end || F <- Files]}.
+strip_fils(Files, AdditionalChunks) ->
+    {ok, [begin {ok, Reply} = strip_file(F, AdditionalChunks), Reply end || F <- Files]}.
 
 %% -> {ok, {Mod, FileName}} | {ok, {Mod, binary()}} | throw(Error)
-strip_file(File) ->
-    {ok, {Mod, Chunks}} = read_significant_chunks(File, significant_chunks()),
+strip_file(File, AdditionalChunks) ->
+    {ok, {Mod, Chunks}} = read_significant_chunks(File, AdditionalChunks ++ significant_chunks()),
     {ok, Stripped0} = build_module(Chunks),
     Stripped = compress(Stripped0),
     case File of
diff --git a/lib/stdlib/src/calendar.erl b/lib/stdlib/src/calendar.erl
index bb5d450cd6..3a8fe2211b 100644
--- a/lib/stdlib/src/calendar.erl
+++ b/lib/stdlib/src/calendar.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1996-2018. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2019. All Rights Reserved.
 %% 
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -357,13 +357,17 @@ rfc3339_to_system_time(DateTimeString) ->
 rfc3339_to_system_time(DateTimeString, Options) ->
     Unit = proplists:get_value(unit, Options, second),
     %% _T is the character separating the date and the time:
-    {DateStr, [_T|TimeStr]} = lists:split(10, DateTimeString),
-    {TimeStr2, TimeStr3} = lists:split(8, TimeStr),
-    {ok, [Hour, Min, Sec], []} = io_lib:fread("~d:~d:~d", TimeStr2),
-    {ok, [Year, Month, Day], []} = io_lib:fread("~d-~d-~d", DateStr),
+    [Y1, Y2, Y3, Y4, $-, Mon1, Mon2, $-, D1, D2, _T,
+     H1, H2, $:, Min1, Min2, $:, S1, S2 | TimeStr] = DateTimeString,
+    Hour = list_to_integer([H1, H2]),
+    Min = list_to_integer([Min1, Min2]),
+    Sec = list_to_integer([S1, S2]),
+    Year = list_to_integer([Y1, Y2, Y3, Y4]),
+    Month = list_to_integer([Mon1, Mon2]),
+    Day = list_to_integer([D1, D2]),
     DateTime = {{Year, Month, Day}, {Hour, Min, Sec}},
     IsFractionChar = fun(C) -> C >= $0 andalso C =< $9 orelse C =:= $. end,
-    {FractionStr, UtcOffset} = lists:splitwith(IsFractionChar, TimeStr3),
+    {FractionStr, UtcOffset} = lists:splitwith(IsFractionChar, TimeStr),
     Time = datetime_to_system_time(DateTime),
     Secs = Time - offset_adjustment(Time, second, UtcOffset),
     check(DateTimeString, Options, Secs),
@@ -451,8 +455,9 @@ system_time_to_rfc3339(Time, Options) ->
     DateTime = system_time_to_datetime(Secs),
     {{Year, Month, Day}, {Hour, Min, Sec}} = DateTime,
     FractionStr = fraction_str(Factor, AdjustedTime),
-    flat_fwrite("~4.10.0B-~2.10.0B-~2.10.0B~c~2.10.0B:~2.10.0B:~2.10.0B~s~s",
-                [Year, Month, Day, T, Hour, Min, Sec, FractionStr, Offset]).
+    L = [pad4(Year), "-", pad2(Month), "-", pad2(Day), [T],
+         pad2(Hour), ":", pad2(Min), ":", pad2(Sec), FractionStr, Offset],
+    lists:append(L).
 
 %% time_difference(T1, T2) = Tdiff
 %%
@@ -529,24 +534,41 @@ valid_date({Y, M, D}) ->
 
 %% day_to_year(DayOfEpoch) = {Year, DayOfYear}
 %%
-%% The idea here is to first guess a year, and then adjust. Although
-%% the implementation is recursive, at most 1 or 2 recursive steps
+%% The idea here is to first set the upper and lower bounds for a year,
+%% and then adjust a range by interpolation search. Although complexity
+%% of the algorithm is log(log(n)), at most 1 or 2 recursive steps
 %% are taken.
-%% If DayOfEpoch is very large, we need far more than 1 or 2 iterations,
-%% since we just subtract a yearful of days at a time until we're there.
 %%
 -spec day_to_year(non_neg_integer()) -> {year(), day_of_year()}.
 day_to_year(DayOfEpoch) when DayOfEpoch >= 0 ->
-    Y0 = DayOfEpoch div ?DAYS_PER_YEAR,
-    {Y1, D1} = dty(Y0, DayOfEpoch, dy(Y0)),
+    YMax = DayOfEpoch div ?DAYS_PER_YEAR,
+    YMin = DayOfEpoch div ?DAYS_PER_LEAP_YEAR,
+    {Y1, D1} = dty(YMin, YMax, DayOfEpoch, dy(YMin), dy(YMax)),
     {Y1, DayOfEpoch - D1}.
 
--spec dty(year(), non_neg_integer(), non_neg_integer()) ->
+-spec dty(year(), year(), non_neg_integer(), non_neg_integer(),
+    non_neg_integer()) ->
 		{year(), non_neg_integer()}.
-dty(Y, D1, D2) when D1 < D2 -> 
-    dty(Y-1, D1, dy(Y-1));
-dty(Y, _D1, D2) ->
-    {Y, D2}.
+dty(Min, Max, _D1, DMin, _DMax) when Min == Max ->
+    {Min, DMin};
+dty(Min, Max, D1, DMin, DMax) ->
+    Diff = Max - Min,
+    Mid = Min + (Diff * (D1 - DMin)) div (DMax - DMin),
+    MidLength =
+        case is_leap_year(Mid) of
+            true -> ?DAYS_PER_LEAP_YEAR;
+            false -> ?DAYS_PER_YEAR
+        end,
+    case dy(Mid) of
+        D2 when D1 < D2 ->
+            NewMax = Mid - 1,
+            dty(Min, NewMax, D1, DMin, dy(NewMax));
+        D2 when D1 - D2 >= MidLength ->
+            NewMin = Mid + 1,
+            dty(NewMin, Max, D1, dy(NewMin), DMax);
+        D2 ->
+            {Mid, D2}
+    end.
 
 %%
 %% The Gregorian days of the iso week 01 day 1 for a given year.
@@ -663,7 +685,7 @@ offset(OffsetOption, Secs0) when OffsetOption =:= "";
     Secs = abs(Secs0),
     Hour = Secs div 3600,
     Min = (Secs rem 3600) div 60,
-    io_lib:fwrite("~c~2.10.0B:~2.10.0B", [Sign, Hour, Min]);
+    [Sign | lists:append([pad2(Hour), ":", pad2(Min)])];
 offset(OffsetOption, _Secs) ->
     OffsetOption.
 
@@ -678,8 +700,10 @@ offset_string_adjustment(_Time, _Unit, "Z") ->
     0;
 offset_string_adjustment(_Time, _Unit, "z") ->
     0;
-offset_string_adjustment(_Time, _Unit, [Sign|Tz]) ->
-    {ok, [Hour, Min], []} = io_lib:fread("~d:~d", Tz),
+offset_string_adjustment(_Time, _Unit, Tz) ->
+    [Sign, H1, H2, $:, M1, M2] = Tz,
+    Hour = list_to_integer([H1, H2]),
+    Min = list_to_integer([M1, M2]),
     Adjustment = 3600 * Hour + 60 * Min,
     case Sign of
         $- -> -Adjustment;
@@ -687,8 +711,9 @@ offset_string_adjustment(_Time, _Unit, [Sign|Tz]) ->
     end.
 
 local_offset(SystemTime, Unit) ->
-    LocalTime = system_time_to_local_time(SystemTime, Unit),
+    %% Not optimized for special cases.
     UniversalTime = system_time_to_universal_time(SystemTime, Unit),
+    LocalTime = erlang:universaltime_to_localtime(UniversalTime),
     LocalSecs = datetime_to_gregorian_seconds(LocalTime),
     UniversalSecs = datetime_to_gregorian_seconds(UniversalTime),
     LocalSecs - UniversalSecs.
@@ -697,7 +722,8 @@ fraction_str(1, _Time) ->
     "";
 fraction_str(Factor, Time) ->
     Fraction = Time rem Factor,
-    io_lib:fwrite(".~*..0B", [log10(Factor), abs(Fraction)]).
+    S = integer_to_list(abs(Fraction)),
+    [$. | pad(log10(Factor) - length(S), S)].
 
 fraction(second, _) ->
     0;
@@ -718,5 +744,21 @@ log10(1000) -> 3;
 log10(1000000) -> 6;
 log10(1000000000) -> 9.
 
-flat_fwrite(F, S) ->
-    lists:flatten(io_lib:fwrite(F, S)).
+pad(0, S) ->
+    S;
+pad(I, S) ->
+    [$0 | pad(I - 1, S)].
+
+pad2(N) when N < 10 ->
+    [$0 | integer_to_list(N)];
+pad2(N) ->
+    integer_to_list(N).
+
+pad4(N) when N < 10 ->
+    [$0, $0, $0 | integer_to_list(N)];
+pad4(N) when N < 100 ->
+    [$0, $0 | integer_to_list(N)];
+pad4(N) when N < 1000 ->
+    [$0 | integer_to_list(N)];
+pad4(N) ->
+    integer_to_list(N).
diff --git a/lib/stdlib/src/erl_lint.erl b/lib/stdlib/src/erl_lint.erl
index e0cd68617b..3ec78a2667 100644
--- a/lib/stdlib/src/erl_lint.erl
+++ b/lib/stdlib/src/erl_lint.erl
@@ -831,13 +831,15 @@ bif_clashes(Forms, #lint{nowarn_bif_clash=Nowarn} = St) ->
 
 %% not_deprecated(Forms, State0) -> State
 
-not_deprecated(Forms, St0) ->
+not_deprecated(Forms, #lint{compile=Opts}=St0) ->
     %% There are no line numbers in St0#lint.compile.
     MFAsL = [{MFA,L} ||
                 {attribute, L, compile, Args} <- Forms,
                 {nowarn_deprecated_function, MFAs0} <- lists:flatten([Args]),
                 MFA <- lists:flatten([MFAs0])],
-    Nowarn = [MFA || {MFA,_L} <- MFAsL],
+    Nowarn = [MFA ||
+                 {nowarn_deprecated_function, MFAs0} <- Opts,
+                 MFA <- lists:flatten([MFAs0])],
     ML = [{M,L} || {{M,_F,_A},L} <- MFAsL, is_atom(M)],
     St1 = foldl(fun ({M,L}, St2) ->
                         check_module_name(M, L, St2)
diff --git a/lib/stdlib/src/erl_parse.yrl b/lib/stdlib/src/erl_parse.yrl
index 9602f0bcd9..4ad94f2507 100644
--- a/lib/stdlib/src/erl_parse.yrl
+++ b/lib/stdlib/src/erl_parse.yrl
@@ -841,7 +841,7 @@ Erlang code.
 -type af_record_field(T) :: {'record_field', anno(), af_field_name(), T}.
 
 -type af_map_pattern() ::
-        {'map', anno(), [af_assoc_exact(abstract_expr)]}.
+        {'map', anno(), [af_assoc_exact(abstract_expr())]}.
 
 -type abstract_type() :: af_annotated_type()
                        | af_atom()
@@ -872,7 +872,7 @@ Erlang code.
 -type af_fun_type() :: {'type', anno(), 'fun', []}
                      | {'type', anno(), 'fun', [{'type', anno(), 'any'} |
                                                 abstract_type()]}
-                     | {'type', anno(), 'fun', af_function_type()}.
+                     | af_function_type().
 
 -type af_integer_range_type() ::
         {'type', anno(), 'range', [af_singleton_integer_type()]}.
@@ -924,10 +924,11 @@ Erlang code.
 -type af_function_constraint() :: [af_constraint()].
 
 -type af_constraint() :: {'type', anno(), 'constraint',
-                          af_lit_atom('is_subtype'),
-                          [af_type_variable() | abstract_type()]}. % [V, T]
+                          [af_lit_atom('is_subtype') |
+                           [af_type_variable() | abstract_type()]]}. % [IsSubtype, [V, T]]
 
 -type af_singleton_integer_type() :: af_integer()
+                                   | af_character()
                                    | af_unary_op(af_singleton_integer_type())
                                    | af_binary_op(af_singleton_integer_type()).
 
diff --git a/lib/stdlib/src/erl_posix_msg.erl b/lib/stdlib/src/erl_posix_msg.erl
index 8959fea498..b9ed4a3a9d 100644
--- a/lib/stdlib/src/erl_posix_msg.erl
+++ b/lib/stdlib/src/erl_posix_msg.erl
@@ -81,9 +81,9 @@ message_1(el2hlt) -> <<"level 2 halted">>;
 message_1(el2nsync) -> <<"level 2 not synchronized">>;
 message_1(el3hlt) -> <<"level 3 halted">>;
 message_1(el3rst) -> <<"level 3 reset">>;
-message_1(elibacc) -> <<"can not access a needed shared library">>;
+message_1(elibacc) -> <<"cannot access a needed shared library">>;
 message_1(elibbad) -> <<"accessing a corrupted shared library">>;
-message_1(elibexec) -> <<"can not exec a shared library directly">>;
+message_1(elibexec) -> <<"cannot exec a shared library directly">>;
 message_1(elibmax) ->
     <<"attempting to link in more shared libraries than system limit">>;
 message_1(elibscn) -> <<".lib section in a.out corrupted">>;
diff --git a/lib/stdlib/src/erl_pp.erl b/lib/stdlib/src/erl_pp.erl
index dd302a2880..ada3ff5de3 100644
--- a/lib/stdlib/src/erl_pp.erl
+++ b/lib/stdlib/src/erl_pp.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 1996-2018. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2019. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -697,6 +697,8 @@ fun_info(Extra) ->
 
 %% BITS:
 
+bit_grp([], _Opts) ->
+    leaf("<<>>");
 bit_grp(Fs, Opts) ->
     append([['<<'], [bit_elems(Fs, Opts)], ['>>']]).
 
diff --git a/lib/stdlib/src/erl_tar.erl b/lib/stdlib/src/erl_tar.erl
index d8b8f466b1..7064fcacfa 100644
--- a/lib/stdlib/src/erl_tar.erl
+++ b/lib/stdlib/src/erl_tar.erl
@@ -324,7 +324,7 @@ do_open(Name, Mode) when is_list(Mode) ->
 open1({binary,Bin}, read, _Raw, Opts) when is_binary(Bin) ->
     case file:open(Bin, [ram,binary,read]) of
         {ok,File} ->
-            _ = [ram_file:uncompress(File) || Opts =:= [compressed]],
+            _ = [ram_file:uncompress(File) || lists:member(compressed, Opts)],
             {ok, #reader{handle=File,access=read,func=fun file_op/2}};
         Error ->
             Error
@@ -357,7 +357,7 @@ open_mode([read|Rest], false, Raw, Opts) ->
 open_mode([write|Rest], false, Raw, Opts) ->
     open_mode(Rest, write, Raw, Opts);
 open_mode([compressed|Rest], Access, Raw, Opts) ->
-    open_mode(Rest, Access, Raw, [compressed|Opts]);
+    open_mode(Rest, Access, Raw, [compressed,read_ahead|Opts]);
 open_mode([cooked|Rest], Access, _Raw, Opts) ->
     open_mode(Rest, Access, [], Opts);
 open_mode([], Access, Raw, Opts) ->
diff --git a/lib/stdlib/src/gen_fsm.erl b/lib/stdlib/src/gen_fsm.erl
index caaaf8fa2e..1e18710738 100644
--- a/lib/stdlib/src/gen_fsm.erl
+++ b/lib/stdlib/src/gen_fsm.erl
@@ -411,12 +411,13 @@ decode_msg(Msg,Parent, Name, StateName, StateData, Mod, Time, HibernateAfterTime
 	    sys:handle_system_msg(Req, From, Parent, ?MODULE, Debug,
 				  [Name, StateName, StateData, Mod, Time, HibernateAfterTimeout], Hib);
 	{'EXIT', Parent, Reason} ->
-	    terminate(Reason, Name, Msg, Mod, StateName, StateData, Debug);
+	    terminate(
+              Reason, Name, undefined, Msg, Mod, StateName, StateData, Debug);
 	_Msg when Debug =:= [] ->
 	    handle_msg(Msg, Parent, Name, StateName, StateData, Mod, Time, HibernateAfterTimeout);
 	_Msg ->
 	    Debug1 = sys:handle_debug(Debug, fun print_event/3,
-				      {Name, StateName}, {in, Msg}),
+				      Name, {in, Msg, StateName}),
 	    handle_msg(Msg, Parent, Name, StateName, StateData,
 		       Mod, Time, HibernateAfterTimeout, Debug1)
     end.
@@ -431,7 +432,7 @@ system_continue(Parent, Debug, [Name, StateName, StateData, Mod, Time, Hibernate
 
 system_terminate(Reason, _Parent, Debug,
 		 [Name, StateName, StateData, Mod, _Time, _HibernateAfterTimeout]) ->
-    terminate(Reason, Name, [], Mod, StateName, StateData, Debug).
+    terminate(Reason, Name, undefined, [], Mod, StateName, StateData, Debug).
 
 system_code_change([Name, StateName, StateData, Mod, Time, HibernateAfterTimeout],
 		   _Module, OldVsn, Extra) ->
@@ -452,7 +453,7 @@ system_replace_state(StateFun, [Name, StateName, StateData, Mod, Time, Hibernate
 %% Format debug messages.  Print them as the call-back module sees
 %% them, not as the real erlang messages.  Use trace for that.
 %%-----------------------------------------------------------------
-print_event(Dev, {in, Msg}, {Name, StateName}) ->
+print_event(Dev, {in, Msg, StateName}, Name) ->
     case Msg of
 	{'$gen_event', Event} ->
 	    io:format(Dev, "*DBG* ~tp got event ~tp in state ~tw~n",
@@ -461,6 +462,16 @@ print_event(Dev, {in, Msg}, {Name, StateName}) ->
 	    io:format(Dev,
 		      "*DBG* ~tp got all_state_event ~tp in state ~tw~n",
 		      [Name, Event, StateName]);
+	{'$gen_sync_event', {From,_Tag}, Event} ->
+	    io:format(Dev,
+                      "*DBG* ~tp got sync_event ~tp "
+                      "from ~tw in state ~tw~n",
+		      [Name, Event, From, StateName]);
+	{'$gen_sync_all_state_event', {From,_Tag}, Event} ->
+	    io:format(Dev,
+		      "*DBG* ~tp got sync_all_state_event ~tp "
+                      "from ~tw in state ~tw~n",
+		      [Name, Event, From, StateName]);
 	{timeout, Ref, {'$gen_timer', Message}} ->
 	    io:format(Dev,
 		      "*DBG* ~tp got timer ~tp in state ~tw~n",
@@ -473,11 +484,11 @@ print_event(Dev, {in, Msg}, {Name, StateName}) ->
 	    io:format(Dev, "*DBG* ~tp got ~tp in state ~tw~n",
 		      [Name, Msg, StateName])
     end;
-print_event(Dev, {out, Msg, To, StateName}, Name) ->
+print_event(Dev, {out, Msg, {To,_Tag}, StateName}, Name) ->
     io:format(Dev, "*DBG* ~tp sent ~tp to ~tw~n"
 	           "      and switched to state ~tw~n",
 	      [Name, Msg, To, StateName]);
-print_event(Dev, return, {Name, StateName}) ->
+print_event(Dev, {noreply, StateName}, Name) ->
     io:format(Dev, "*DBG* ~tp switched to state ~tw~n",
 	      [Name, StateName]).
 
@@ -495,9 +506,9 @@ handle_msg(Msg, Parent, Name, StateName, StateData, Mod, _Time, HibernateAfterTi
 	    reply(From, Reply),
 	    loop(Parent, Name, NStateName, NStateData, Mod, Time1, HibernateAfterTimeout, []);
 	{stop, Reason, NStateData} ->
-	    terminate(Reason, Name, Msg, Mod, StateName, NStateData, []);
+	    terminate(Reason, Name, From, Msg, Mod, StateName, NStateData, []);
 	{stop, Reason, Reply, NStateData} when From =/= undefined ->
-	    {'EXIT', R} = (catch terminate(Reason, Name, Msg, Mod,
+	    {'EXIT', R} = (catch terminate(Reason, Name, From, Msg, Mod,
 					   StateName, NStateData, [])),
 	    reply(From, Reply),
 	    exit(R);
@@ -510,10 +521,10 @@ handle_msg(Msg, Parent, Name, StateName, StateData, Mod, _Time, HibernateAfterTi
                            error_logger=>#{tag=>warning_msg}}),
             loop(Parent, Name, StateName, StateData, Mod, infinity, HibernateAfterTimeout, []);
 	{'EXIT', What} ->
-	    terminate(What, Name, Msg, Mod, StateName, StateData, []);
+	    terminate(What, Name, From, Msg, Mod, StateName, StateData, []);
 	Reply ->
 	    terminate({bad_return_value, Reply},
-		      Name, Msg, Mod, StateName, StateData, [])
+		      Name, From, Msg, Mod, StateName, StateData, [])
     end.
 
 handle_msg(Msg, Parent, Name, StateName, StateData, Mod, _Time, HibernateAfterTimeout, Debug) ->
@@ -521,11 +532,11 @@ handle_msg(Msg, Parent, Name, StateName, StateData, Mod, _Time, HibernateAfterTi
     case catch dispatch(Msg, Mod, StateName, StateData) of
 	{next_state, NStateName, NStateData} ->
 	    Debug1 = sys:handle_debug(Debug, fun print_event/3,
-				      {Name, NStateName}, return),
+				      Name, {noreply, NStateName}),
 	    loop(Parent, Name, NStateName, NStateData, Mod, infinity, HibernateAfterTimeout, Debug1);
 	{next_state, NStateName, NStateData, Time1} ->
 	    Debug1 = sys:handle_debug(Debug, fun print_event/3,
-				      {Name, NStateName}, return),
+				      Name, {noreply, NStateName}),
 	    loop(Parent, Name, NStateName, NStateData, Mod, Time1, HibernateAfterTimeout, Debug1);
         {reply, Reply, NStateName, NStateData} when From =/= undefined ->
 	    Debug1 = reply(Name, From, Reply, Debug, NStateName),
@@ -534,17 +545,18 @@ handle_msg(Msg, Parent, Name, StateName, StateData, Mod, _Time, HibernateAfterTi
 	    Debug1 = reply(Name, From, Reply, Debug, NStateName),
 	    loop(Parent, Name, NStateName, NStateData, Mod, Time1, HibernateAfterTimeout, Debug1);
 	{stop, Reason, NStateData} ->
-	    terminate(Reason, Name, Msg, Mod, StateName, NStateData, Debug);
+	    terminate(
+              Reason, Name, From, Msg, Mod, StateName, NStateData, Debug);
 	{stop, Reason, Reply, NStateData} when From =/= undefined ->
-	    {'EXIT', R} = (catch terminate(Reason, Name, Msg, Mod,
+	    {'EXIT', R} = (catch terminate(Reason, Name, From, Msg, Mod,
 					   StateName, NStateData, Debug)),
 	    _ = reply(Name, From, Reply, Debug, StateName),
 	    exit(R);
 	{'EXIT', What} ->
-	    terminate(What, Name, Msg, Mod, StateName, StateData, Debug);
+	    terminate(What, Name, From, Msg, Mod, StateName, StateData, Debug);
 	Reply ->
 	    terminate({bad_return_value, Reply},
-		      Name, Msg, Mod, StateName, StateData, Debug)
+		      Name, From, Msg, Mod, StateName, StateData, Debug)
     end.
 
 dispatch({'$gen_event', Event}, Mod, StateName, StateData) ->
@@ -571,24 +583,25 @@ from(_) -> undefined.
 reply({To, Tag}, Reply) ->
     catch To ! {Tag, Reply}.
 
-reply(Name, {To, Tag}, Reply, Debug, StateName) ->
-    reply({To, Tag}, Reply),
+reply(Name, From, Reply, Debug, StateName) ->
+    reply(From, Reply),
     sys:handle_debug(Debug, fun print_event/3, Name,
-		     {out, Reply, To, StateName}).
+		     {out, Reply, From, StateName}).
 
 %%% ---------------------------------------------------
 %%% Terminate the server.
 %%% ---------------------------------------------------
 
--spec terminate(term(), _, _, atom(), _, _, _) -> no_return().
+-spec terminate(term(), _, _, _, atom(), _, _, _) -> no_return().
 
-terminate(Reason, Name, Msg, Mod, StateName, StateData, Debug) ->
+terminate(Reason, Name, From, Msg, Mod, StateName, StateData, Debug) ->
     case erlang:function_exported(Mod, terminate, 3) of
 	true ->
 	    case catch Mod:terminate(Reason, StateName, StateData) of
 		{'EXIT', R} ->
 		    FmtStateData = format_status(terminate, Mod, get(), StateData),
-		    error_info(R, Name, Msg, StateName, FmtStateData, Debug),
+		    error_info(
+                      R, Name, From, Msg, StateName, FmtStateData, Debug),
 		    exit(R);
 		_ ->
 		    ok
@@ -605,29 +618,51 @@ terminate(Reason, Name, Msg, Mod, StateName, StateData, Debug) ->
  	    exit(Shutdown);
 	_ ->
 	    FmtStateData1 = format_status(terminate, Mod, get(), StateData),
-	    error_info(Reason,Name,Msg,StateName,FmtStateData1,Debug),
+	    error_info(
+              Reason, Name, From, Msg, StateName, FmtStateData1, Debug),
 	    exit(Reason)
     end.
 
-error_info(Reason, Name, Msg, StateName, StateData, Debug) ->
+error_info(Reason, Name, From, Msg, StateName, StateData, Debug) ->
+    Log = sys:get_log(Debug),
     ?LOG_ERROR(#{label=>{gen_fsm,terminate},
                  name=>Name,
                  last_message=>Msg,
                  state_name=>StateName,
                  state_data=>StateData,
-                 reason=>Reason},
+                 log=>Log,
+                 reason=>Reason,
+                 client_info=>client_stacktrace(From)},
                #{domain=>[otp],
                  report_cb=>fun gen_fsm:format_log/1,
                  error_logger=>#{tag=>error}}),
-    sys:print_log(Debug),
     ok.
 
+client_stacktrace(undefined) ->
+    undefined;
+client_stacktrace({Pid,_Tag}) ->
+    client_stacktrace(Pid);
+client_stacktrace(Pid) when is_pid(Pid), node(Pid) =:= node() ->
+    case process_info(Pid, [current_stacktrace, registered_name]) of
+        undefined ->
+            {Pid,dead};
+        [{current_stacktrace, Stacktrace}, {registered_name, []}]  ->
+            {Pid,{Pid,Stacktrace}};
+        [{current_stacktrace, Stacktrace}, {registered_name, Name}]  ->
+            {Pid,{Name,Stacktrace}}
+    end;
+client_stacktrace(Pid) when is_pid(Pid) ->
+    {Pid,remote}.
+
+
 format_log(#{label:={gen_fsm,terminate},
              name:=Name,
              last_message:=Msg,
              state_name:=StateName,
              state_data:=StateData,
-             reason:=Reason}) ->
+             log:=Log,
+             reason:=Reason,
+             client_info:=ClientInfo}) ->
     Reason1 = 
 	case Reason of
 	    {undef,[{M,F,A,L}|MFAs]} ->
@@ -645,27 +680,39 @@ format_log(#{label:={gen_fsm,terminate},
 	    _ ->
 		Reason
 	end,
+    {ClientFmt,ClientArgs} = format_client_log(ClientInfo),
     {"** State machine ~tp terminating \n" ++
          get_msg_str(Msg) ++
      "** When State == ~tp~n"
      "**      Data  == ~tp~n"
-     "** Reason for termination = ~n** ~tp~n",
-     [Name, get_msg(Msg), StateName, StateData, Reason1]};
+     "** Reason for termination ==~n** ~tp~n" ++
+         case Log of
+             [] -> [];
+             _ -> "** Log ==~n** ~tp~n"
+         end ++ ClientFmt,
+     [Name|error_logger:limit_term(get_msg(Msg))] ++
+         [StateName,
+          error_logger:limit_term(StateData),
+          error_logger:limit_term(Reason1) |
+          case Log of
+              [] -> [];
+              _ -> [[error_logger:limit_term(D) || D <- Log]]
+          end] ++ ClientArgs};
 format_log(#{label:={gen_fsm,no_handle_info},
              module:=Mod,
              message:=Msg}) ->
     {"** Undefined handle_info in ~p~n"
      "** Unhandled message: ~tp~n",
-     [Mod, Msg]}.
+     [Mod, error_logger:limit_term(Msg)]}.
 
 get_msg_str({'$gen_event', _Event}) ->
     "** Last event in was ~tp~n";
-get_msg_str({'$gen_sync_event', _Event}) ->
-    "** Last sync event in was ~tp~n";
+get_msg_str({'$gen_sync_event', _From, _Event}) ->
+    "** Last sync event in was ~tp from ~tw~n";
 get_msg_str({'$gen_all_state_event', _Event}) ->
     "** Last event in was ~tp (for all states)~n";
-get_msg_str({'$gen_sync_all_state_event', _Event}) ->
-    "** Last sync event in was ~tp (for all states)~n";
+get_msg_str({'$gen_sync_all_state_event', _From, _Event}) ->
+    "** Last sync event in was ~tp (for all states) from ~tw~n";
 get_msg_str({timeout, _Ref, {'$gen_timer', _Msg}}) ->
     "** Last timer event in was ~tp~n";
 get_msg_str({timeout, _Ref, {'$gen_event', _Msg}}) ->
@@ -673,13 +720,24 @@ get_msg_str({timeout, _Ref, {'$gen_event', _Msg}}) ->
 get_msg_str(_Msg) ->
     "** Last message in was ~tp~n".
 
-get_msg({'$gen_event', Event}) -> Event;
-get_msg({'$gen_sync_event', Event}) -> Event;
-get_msg({'$gen_all_state_event', Event}) -> Event;
-get_msg({'$gen_sync_all_state_event', Event}) -> Event;
-get_msg({timeout, Ref, {'$gen_timer', Msg}}) -> {timeout, Ref, Msg};
-get_msg({timeout, _Ref, {'$gen_event', Event}}) -> Event;
-get_msg(Msg) -> Msg.
+get_msg({'$gen_event', Event}) -> [Event];
+get_msg({'$gen_sync_event', {From,_Tag}, Event}) -> [Event,From];
+get_msg({'$gen_all_state_event', Event}) -> [Event];
+get_msg({'$gen_sync_all_state_event', {From,_Tag}, Event}) -> [Event,From];
+get_msg({timeout, Ref, {'$gen_timer', Msg}}) -> [{timeout, Ref, Msg}];
+get_msg({timeout, _Ref, {'$gen_event', Event}}) -> [Event];
+get_msg(Msg) -> [Msg].
+
+format_client_log(undefined) ->
+    {"", []};
+format_client_log({From,dead}) ->
+    {"** Client ~p is dead~n", [From]};
+format_client_log({From,remote}) ->
+    {"** Client ~p is remote on node ~p~n", [From, node(From)]};
+format_client_log({_From,{Name,Stacktrace}}) ->
+    {"** Client ~tp stacktrace~n"
+     "** ~tp~n",
+     [Name, error_logger:limit_term(Stacktrace)]}.
 
 %%-----------------------------------------------------------------
 %% Status information
@@ -689,18 +747,18 @@ format_status(Opt, StatusData) ->
 	StatusData,
     Header = gen:format_status_header("Status for state machine",
                                       Name),
-    Log = sys:get_debug(log, Debug, []),
-    Specfic = format_status(Opt, Mod, PDict, StateData),
-    Specfic = case format_status(Opt, Mod, PDict, StateData) of
-		  S when is_list(S) -> S;
-		  S -> [S]
-	      end,
+    Log = sys:get_log(Debug),
+    Specific =
+        case format_status(Opt, Mod, PDict, StateData) of
+            S when is_list(S) -> S;
+            S -> [S]
+        end,
     [{header, Header},
      {data, [{"Status", SysState},
 	     {"Parent", Parent},
 	     {"Logged events", Log},
 	     {"StateName", StateName}]} |
-     Specfic].
+     Specific].
 
 format_status(Opt, Mod, PDict, State) ->
     DefStatus = case Opt of
diff --git a/lib/stdlib/src/gen_server.erl b/lib/stdlib/src/gen_server.erl
index 44e9231ebe..c7b6406f54 100644
--- a/lib/stdlib/src/gen_server.erl
+++ b/lib/stdlib/src/gen_server.erl
@@ -773,10 +773,10 @@ handle_common_reply(Reply, Parent, Name, From, Msg, Mod, HibernateAfterTimeout,
 	    terminate({bad_return_value, BadReply}, ?STACKTRACE(), Name, From, Msg, Mod, State, Debug)
     end.
 
-reply(Name, {To, Tag}, Reply, State, Debug) ->
-    reply({To, Tag}, Reply),
+reply(Name, From, Reply, State, Debug) ->
+    reply(From, Reply),
     sys:handle_debug(Debug, fun print_event/3, Name,
-		     {out, Reply, To, State} ).
+		     {out, Reply, From, State} ).
 
 
 %%-----------------------------------------------------------------
@@ -810,7 +810,7 @@ system_replace_state(StateFun, [Name, State, Mod, Time, HibernateAfterTimeout])
 print_event(Dev, {in, Msg}, Name) ->
     case Msg of
 	{'$gen_call', {From, _Tag}, Call} ->
-	    io:format(Dev, "*DBG* ~tp got call ~tp from ~w~n",
+	    io:format(Dev, "*DBG* ~tp got call ~tp from ~tw~n",
 		      [Name, Call, From]);
 	{'$gen_cast', Cast} ->
 	    io:format(Dev, "*DBG* ~tp got cast ~tp~n",
@@ -818,8 +818,8 @@ print_event(Dev, {in, Msg}, Name) ->
 	_ ->
 	    io:format(Dev, "*DBG* ~tp got ~tp~n", [Name, Msg])
     end;
-print_event(Dev, {out, Msg, To, State}, Name) ->
-    io:format(Dev, "*DBG* ~tp sent ~tp to ~w, new state ~tp~n",
+print_event(Dev, {out, Msg, {To,_Tag}, State}, Name) ->
+    io:format(Dev, "*DBG* ~tp sent ~tp to ~tw, new state ~tp~n",
 	      [Name, Msg, To, State]);
 print_event(Dev, {noreply, State}, Name) ->
     io:format(Dev, "*DBG* ~tp new state ~tp~n", [Name, State]);
@@ -885,16 +885,17 @@ error_info(_Reason, application_controller, _From, _Msg, _Mod, _State, _Debug) -
     %% of it instead
     ok;
 error_info(Reason, Name, From, Msg, Mod, State, Debug) ->
+    Log = sys:get_log(Debug),
     ?LOG_ERROR(#{label=>{gen_server,terminate},
                  name=>Name,
                  last_message=>Msg,
                  state=>format_status(terminate, Mod, get(), State),
+                 log=>format_log_state(Mod, Log),
                  reason=>Reason,
                  client_info=>client_stacktrace(From)},
                #{domain=>[otp],
                  report_cb=>fun gen_server:format_log/1,
                  error_logger=>#{tag=>error}}),
-    sys:print_log(Debug),
     ok.
 
 client_stacktrace(undefined) ->
@@ -917,6 +918,7 @@ format_log(#{label:={gen_server,terminate},
              name:=Name,
              last_message:=Msg,
              state:=State,
+             log:=Log,
              reason:=Reason,
              client_info:=Client}) ->
     Reason1 = 
@@ -934,20 +936,30 @@ format_log(#{label:={gen_server,terminate},
 			end
 		end;
 	    _ ->
-		error_logger:limit_term(Reason)
+		Reason
 	end,    
     {ClientFmt,ClientArgs} = format_client_log(Client),
+    [LimitedMsg,LimitedState,LimitedReason|LimitedLog] =
+        [error_logger:limit_term(D) || D <- [Msg,State,Reason1|Log]],
     {"** Generic server ~tp terminating \n"
      "** Last message in was ~tp~n"
      "** When Server state == ~tp~n"
-     "** Reason for termination == ~n** ~tp~n" ++ ClientFmt,
-     [Name, Msg, error_logger:limit_term(State), Reason1] ++ ClientArgs};
+     "** Reason for termination ==~n** ~tp~n" ++
+         case LimitedLog of
+             [] -> [];
+             _ -> "** Log ==~n** ~tp~n"
+         end ++ ClientFmt,
+     [Name, LimitedMsg, LimitedState, LimitedReason] ++
+         case LimitedLog of
+             [] -> [];
+             _ -> [LimitedLog]
+         end ++ ClientArgs};
 format_log(#{label:={gen_server,no_handle_info},
              module:=Mod,
              message:=Msg}) ->
     {"** Undefined handle_info in ~p~n"
      "** Unhandled message: ~tp~n",
-     [Mod, Msg]}.
+     [Mod, error_logger:limit_term(Msg)]}.
 
 format_client_log(undefined) ->
     {"", []};
@@ -958,7 +970,7 @@ format_client_log({From,remote}) ->
 format_client_log({_From,{Name,Stacktrace}}) ->
     {"** Client ~tp stacktrace~n"
      "** ~tp~n",
-     [Name, Stacktrace]}.
+     [Name, error_logger:limit_term(Stacktrace)]}.
 
 %%-----------------------------------------------------------------
 %% Status information
@@ -966,16 +978,25 @@ format_client_log({_From,{Name,Stacktrace}}) ->
 format_status(Opt, StatusData) ->
     [PDict, SysState, Parent, Debug, [Name, State, Mod, _Time, _HibernateAfterTimeout]] = StatusData,
     Header = gen:format_status_header("Status for generic server", Name),
-    Log = sys:get_debug(log, Debug, []),
-    Specfic = case format_status(Opt, Mod, PDict, State) of
+    Log = sys:get_log(Debug),
+    Specific = case format_status(Opt, Mod, PDict, State) of
 		  S when is_list(S) -> S;
 		  S -> [S]
 	      end,
     [{header, Header},
      {data, [{"Status", SysState},
 	     {"Parent", Parent},
-	     {"Logged events", Log}]} |
-     Specfic].
+	     {"Logged events", format_log_state(Mod, Log)}]} |
+     Specific].
+
+format_log_state(Mod, Log) ->
+    [case Event of
+         {out,Msg,From,State} ->
+             {out,Msg,From,format_status(terminate, Mod, get(), State)};
+         {noreply,State} ->
+             {noreply,format_status(terminate, Mod, get(), State)};
+         _ -> Event
+     end || Event <- Log].
 
 format_status(Opt, Mod, PDict, State) ->
     DefStatus = case Opt of
diff --git a/lib/stdlib/src/gen_statem.erl b/lib/stdlib/src/gen_statem.erl
index faa43fbc1e..49911eac2c 100644
--- a/lib/stdlib/src/gen_statem.erl
+++ b/lib/stdlib/src/gen_statem.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2016-2018. All Rights Reserved.
+%% Copyright Ericsson AB 2016-2019. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -67,6 +67,14 @@
 %% Type that is exported just to be documented
 -export_type([transition_option/0]).
 
+%% Type exports for start_link & friends
+-export_type(
+   [server_name/0,
+    server_ref/0,
+    start_opt/0,
+    start_ret/0,
+    enter_loop_opt/0]).
+
 %%%==========================================================================
 %%% Interface functions.
 %%%==========================================================================
@@ -330,6 +338,7 @@
 
 
 %% Type validation functions
+%% - return true if the value is of the type, false otherwise
 -compile(
    {inline,
     [callback_mode/1, state_enter/1,
@@ -373,77 +382,76 @@ timeout_event_type(Type) ->
 
 
 -define(
+   relative_timeout(T),
+   ((is_integer(T) andalso 0 =< (T)) orelse (T) =:= infinity)).
+
+-define(
+   absolute_timeout(T),
+   (is_integer(T) orelse (T) =:= infinity)).
+
+-define(
    STACKTRACE(),
    element(2, erlang:process_info(self(), current_stacktrace))).
 
 -define(not_sys_debug, []).
 %%
 %% This is a macro to only evaluate arguments if Debug =/= [].
-%% Debug is evaluated multiple times.
+%% Debug is evaluated 2 times.
 -define(
-   sys_debug(Debug, NameState, Entry),
+   sys_debug(Debug, Extra, SystemEvent),
    case begin Debug end of
        ?not_sys_debug ->
            begin Debug end;
        _ ->
-           sys_debug(begin Debug end, begin NameState end, begin Entry end)
+           sys_debug(
+             begin Debug end, begin Extra end, begin SystemEvent end)
     end).
 
--record(state,
+-record(params,
         {callback_mode = undefined :: callback_mode() | undefined,
          state_enter = false :: boolean(),
+         parent :: pid(),
          module :: atom(),
-         name :: atom(),
-         state :: term(),
-         data :: term(),
+         name :: atom() | pid(),
+         hibernate_after = infinity :: timeout()
+        }).
+
+-record(state,
+        {state_data = {undefined,undefined} ::
+           {State :: term(),Data :: term()},
          postponed = [] :: [{event_type(),term()}],
-         %%
-         timer_refs = #{} :: % timer ref => the timer's event type
-           #{reference() => timeout_event_type()},
-         timer_types = #{} ::  % timer's event type => timer ref
-           #{timeout_event_type() => reference()},
-         cancel_timers = 0 :: non_neg_integer(),
-         %% We add a timer to both timer_refs and timer_types
-         %% when we start it.  When we request an asynchronous
-         %% timer cancel we remove it from timer_types.  When
-         %% the timer cancel message arrives we remove it from
-         %% timer_refs.
-         %%
-         hibernate = false :: boolean(),
-         hibernate_after = infinity :: timeout()}).
-
--record(trans_opts,
-        {hibernate = false,
-         postpone = false,
-         timeouts_r = [],
-         next_events_r = []}).
+         timers = {#{},#{}} ::
+           {%% TimerRef => TimeoutType
+            TimerRefs :: #{reference() => timeout_event_type()},
+            %% TimeoutType => TimerRef
+            TimeoutTypes :: #{timeout_event_type() => reference()}},
+          hibernate = false :: boolean()
+        }).
 
 %%%==========================================================================
 %%% API
 
 -type server_name() ::
-      {'global', GlobalName :: term()}
+        {'global', GlobalName :: term()}
       | {'via', RegMod :: module(), Name :: term()}
       | {'local', atom()}.
 -type server_ref() ::
-      pid()
+        pid()
       | (LocalName :: atom())
       | {Name :: atom(), Node :: atom()}
       | {'global', GlobalName :: term()}
       | {'via', RegMod :: module(), ViaName :: term()}.
--type debug_opt() ::
-	{'debug',
-	 Dbgs ::
-	   ['trace' | 'log' | 'statistics' | 'debug'
-	    | {'logfile', string()}]}.
--type hibernate_after_opt() ::
-	{'hibernate_after', HibernateAfterTimeout :: timeout()}.
 -type start_opt() ::
-	debug_opt()
-      | {'timeout', Time :: timeout()}
-	  | hibernate_after_opt()
-      | {'spawn_opt', [proc_lib:spawn_option()]}.
--type start_ret() ::  {'ok', pid()} | 'ignore' | {'error', term()}.
+        {'timeout', Time :: timeout()}
+      | {'spawn_opt', [proc_lib:spawn_option()]}
+      | enter_loop_opt().
+-type start_ret() ::
+        {'ok', pid()}
+      | 'ignore'
+      | {'error', term()}.
+-type enter_loop_opt() ::
+	{'hibernate_after', HibernateAfterTimeout :: timeout()}
+      | {'debug', Dbgs :: [sys:debug_option()]}.
 
 
 
@@ -556,14 +564,14 @@ reply({To,Tag}, Reply) when is_pid(To) ->
 %% started by proc_lib into a state machine using
 %% the same arguments as you would have returned from init/1
 -spec enter_loop(
-	Module :: module(), Opts :: [debug_opt() | hibernate_after_opt()],
+	Module :: module(), Opts :: [enter_loop_opt()],
 	State :: state(), Data :: data()) ->
 			no_return().
 enter_loop(Module, Opts, State, Data) ->
     enter_loop(Module, Opts, State, Data, self()).
 %%
 -spec enter_loop(
-	Module :: module(), Opts :: [debug_opt() | hibernate_after_opt()],
+	Module :: module(), Opts :: [enter_loop_opt()],
 	State :: state(), Data :: data(),
 	Server_or_Actions ::
 	  server_name() | pid() | [action()]) ->
@@ -577,7 +585,7 @@ enter_loop(Module, Opts, State, Data, Server_or_Actions) ->
     end.
 %%
 -spec enter_loop(
-	Module :: module(), Opts :: [debug_opt() | hibernate_after_opt()],
+	Module :: module(), Opts :: [enter_loop_opt()],
 	State :: state(), Data :: data(),
 	Server :: server_name() | pid(),
 	Actions :: [action()] | action()) ->
@@ -585,7 +593,12 @@ enter_loop(Module, Opts, State, Data, Server_or_Actions) ->
 enter_loop(Module, Opts, State, Data, Server, Actions) ->
     is_atom(Module) orelse error({atom,Module}),
     Parent = gen:get_parent(),
-    enter(Module, Opts, State, Data, Server, Actions, Parent).
+    Name = gen:get_proc_name(Server),
+    Debug = gen:debug_options(Name, Opts),
+    HibernateAfterTimeout = gen:hibernate_after(Opts),
+    enter(
+      Parent, Debug, Module, Name, HibernateAfterTimeout,
+      State, Data, Actions).
 
 %%---------------------------------------------------------------------------
 %% API helpers
@@ -657,36 +670,29 @@ send(Proc, Msg) ->
     ok.
 
 %% Here the init_it/6 and enter_loop/5,6,7 functions converge
-enter(Module, Opts, State, Data, Server, Actions, Parent) ->
+enter(
+  Parent, Debug, Module, Name, HibernateAfterTimeout,
+  State, Data, Actions) ->
     %% The values should already have been type checked
-    Name = gen:get_proc_name(Server),
-    Debug = gen:debug_options(Name, Opts),
-    HibernateAfterTimeout = gen:hibernate_after(Opts),
-    Events = [],
-    Event = {internal,init_state},
+    Q = [{internal,init_state}],
     %% We enforce {postpone,false} to ensure that
     %% our fake Event gets discarded, thought it might get logged
-    NewActions = listify(Actions) ++ [{postpone,false}],
-    S =
-        #state{
+    Actions_1 = listify(Actions) ++ [{postpone,false}],
+    P =
+        #params{
+           parent = Parent,
            module = Module,
            name = Name,
-           state = State,
-           data = Data,
            hibernate_after = HibernateAfterTimeout},
-    CallEnter = true,
-    NewDebug = ?sys_debug(Debug, {Name,State}, {enter,Event,State}),
-    case call_callback_mode(S) of
-	#state{} = NewS ->
-	    loop_event_actions_list(
-	      Parent, NewDebug, NewS,
-	      Events, Event, State, Data, false,
-              NewActions, CallEnter);
-	[Class,Reason,Stacktrace] ->
-	    terminate(
-	      Class, Reason, Stacktrace, NewDebug,
-	      S, [Event|Events])
-    end.
+    S = #state{state_data = {State,Data}},
+    Debug_1 = ?sys_debug(Debug, Name, {enter,State}),
+    loop_callback_mode(
+      P, Debug_1, S, Q, {State,Data},
+      %% Tunneling Actions through CallbackEvent here...
+      %% Special path to go to action handling, after first
+      %% finding out the callback mode.  CallbackEvent is
+      %% a 2-tuple and Actions a list, which achieves this distinction.
+      Actions_1).
 
 %%%==========================================================================
 %%%  gen callbacks
@@ -694,34 +700,46 @@ enter(Module, Opts, State, Data, Server, Actions, Parent) ->
 init_it(Starter, self, ServerRef, Module, Args, Opts) ->
     init_it(Starter, self(), ServerRef, Module, Args, Opts);
 init_it(Starter, Parent, ServerRef, Module, Args, Opts) ->
+    Name = gen:get_proc_name(ServerRef),
+    Debug = gen:debug_options(Name, Opts),
+    HibernateAfterTimeout = gen:hibernate_after(Opts),
     try Module:init(Args) of
 	Result ->
-	    init_result(Starter, Parent, ServerRef, Module, Result, Opts)
+	    init_result(
+              Starter, Parent, ServerRef, Module, Result,
+              Name, Debug, HibernateAfterTimeout)
     catch
 	Result ->
-	    init_result(Starter, Parent, ServerRef, Module, Result, Opts);
+	    init_result(
+              Starter, Parent, ServerRef, Module, Result,
+              Name, Debug, HibernateAfterTimeout);
 	Class:Reason:Stacktrace ->
-	    Name = gen:get_proc_name(ServerRef),
 	    gen:unregister_name(ServerRef),
 	    proc_lib:init_ack(Starter, {error,Reason}),
 	    error_info(
-	      Class, Reason, Stacktrace,
-	      #state{name = Name},
-	      []),
+	      Class, Reason, Stacktrace, Debug,
+              #params{parent = Parent, name = Name, module = Module},
+              #state{}, []),
 	    erlang:raise(Class, Reason, Stacktrace)
     end.
 
 %%---------------------------------------------------------------------------
 %% gen callbacks helpers
 
-init_result(Starter, Parent, ServerRef, Module, Result, Opts) ->
+init_result(
+  Starter, Parent, ServerRef, Module, Result,
+  Name, Debug, HibernateAfterTimeout) ->
     case Result of
 	{ok,State,Data} ->
 	    proc_lib:init_ack(Starter, {ok,self()}),
-	    enter(Module, Opts, State, Data, ServerRef, [], Parent);
+            enter(
+              Parent, Debug, Module, Name, HibernateAfterTimeout,
+              State, Data, []);
 	{ok,State,Data,Actions} ->
 	    proc_lib:init_ack(Starter, {ok,self()}),
-	    enter(Module, Opts, State, Data, ServerRef, Actions, Parent);
+            enter(
+              Parent, Debug, Module, Name, HibernateAfterTimeout,
+              State, Data, Actions);
 	{stop,Reason} ->
 	    gen:unregister_name(ServerRef),
 	    proc_lib:init_ack(Starter, {error,Reason}),
@@ -731,31 +749,34 @@ init_result(Starter, Parent, ServerRef, Module, Result, Opts) ->
 	    proc_lib:init_ack(Starter, ignore),
 	    exit(normal);
 	_ ->
-	    Name = gen:get_proc_name(ServerRef),
 	    gen:unregister_name(ServerRef),
 	    Error = {bad_return_from_init,Result},
 	    proc_lib:init_ack(Starter, {error,Error}),
 	    error_info(
-	      error, Error, ?STACKTRACE(),
-	      #state{name = Name},
-	      []),
+	      error, Error, ?STACKTRACE(), Debug,
+              #params{parent = Parent, name = Name, module = Module},
+              #state{}, []),
 	    exit(Error)
     end.
 
 %%%==========================================================================
 %%% sys callbacks
+%%%
+%%% We use {P,S} as state (Misc) for the sys module,
+%%% wrap/unwrap it for the server loop* and update
+%%% P#params{parent = Parent}.
 
-system_continue(Parent, Debug, S) ->
-    loop(Parent, Debug, S).
+system_continue(Parent, Debug, {P,S}) ->
+    loop(update_parent(P, Parent), Debug, S).
 
-system_terminate(Reason, _Parent, Debug, S) ->
-    terminate(exit, Reason, ?STACKTRACE(), Debug, S, []).
+system_terminate(Reason, Parent, Debug, {P,S}) ->
+    terminate(
+      exit, Reason, ?STACKTRACE(),
+      update_parent(P, Parent), Debug, S, []).
 
 system_code_change(
-  #state{
-     module = Module,
-     state = State,
-     data = Data} = S,
+  {#params{module = Module} = P,
+   #state{state_data = {State,Data}} = S},
   _Mod, OldVsn, Extra) ->
     case
 	try Module:code_change(OldVsn, State, Data, Extra)
@@ -765,44 +786,54 @@ system_code_change(
     of
 	{ok,NewState,NewData} ->
 	    {ok,
-	     S#state{
-               callback_mode = undefined,
-               state = NewState,
-               data = NewData}};
+	     {P#params{callback_mode = undefined},
+              S#state{state_data = {NewState,NewData}}}};
 	{ok,_} = Error ->
 	    error({case_clause,Error});
 	Error ->
 	    Error
     end.
 
-system_get_state(#state{state = State, data = Data}) ->
-    {ok,{State,Data}}.
+system_get_state({_P,#state{state_data = State_Data}}) ->
+    {ok,State_Data}.
 
 system_replace_state(
-  StateFun,
-  #state{
-     state = State,
-     data = Data} = S) ->
-    {NewState,NewData} = Result = StateFun({State,Data}),
-    {ok,Result,S#state{state = NewState, data = NewData}}.
+  StateFun, {P,#state{state_data = State_Data} = S}) ->
+    %%
+    NewState_NewData = StateFun(State_Data),
+    {ok,NewState_NewData,{P,S#state{state_data = NewState_NewData}}}.
 
 format_status(
   Opt,
   [PDict,SysState,Parent,Debug,
-   #state{name = Name, postponed = P} = S]) ->
+   {#params{name = Name} = P,
+    #state{postponed = Postponed} = S}]) ->
     Header = gen:format_status_header("Status for state machine", Name),
-    Log = sys:get_debug(log, Debug, []),
+    Log = sys:get_log(Debug),
     [{header,Header},
      {data,
       [{"Status",SysState},
        {"Parent",Parent},
        {"Logged Events",Log},
-       {"Postponed",P}]} |
-     case format_status(Opt, PDict, S) of
+       {"Postponed",Postponed}]} |
+     case format_status(Opt, PDict, update_parent(P, Parent), S) of
 	 L when is_list(L) -> L;
 	 T -> [T]
      end].
 
+%% Update #params.parent only if it differs.  This should not
+%% be possible today (OTP-22.0), but could happen for example
+%% if someone implements changing a server's parent
+%% in a new sys call.
+-compile({inline, update_parent/2}).
+update_parent(P, Parent) ->
+    case P of
+        #params{parent = Parent} ->
+            P;
+        #params{} ->
+            P#params{parent = Parent}
+    end.
+
 %%---------------------------------------------------------------------------
 %% Format debug messages.  Print them as the call-back module sees
 %% them, not as the real erlang messages.  Use trace for that.
@@ -811,34 +842,46 @@ format_status(
 sys_debug(Debug, NameState, Entry) ->
   sys:handle_debug(Debug, fun print_event/3, NameState, Entry).
 
-print_event(Dev, {in,Event}, {Name,State}) ->
-    io:format(
-      Dev, "*DBG* ~tp receive ~ts in state ~tp~n",
-      [Name,event_string(Event),State]);
-print_event(Dev, {out,Reply,{To,_Tag}}, {Name,State}) ->
-    io:format(
-      Dev, "*DBG* ~tp send ~tp to ~p from state ~tp~n",
-      [Name,Reply,To,State]);
-print_event(Dev, {terminate,Reason}, {Name,State}) ->
-    io:format(
-      Dev, "*DBG* ~tp terminate ~tp in state ~tp~n",
-      [Name,Reason,State]);
-print_event(Dev, {Tag,Event,NextState}, {Name,State}) ->
-    StateString =
-	case NextState of
-	    State ->
-		io_lib:format("~tp", [State]);
-	    _ ->
-		io_lib:format("~tp => ~tp", [State,NextState])
-	end,
-    io:format(
-      Dev, "*DBG* ~tp ~tw ~ts in state ~ts~n",
-      [Name,Tag,event_string(Event),StateString]).
+print_event(Dev, SystemEvent, Name) ->
+    case SystemEvent of
+        {in,Event,State} ->
+            io:format(
+              Dev, "*DBG* ~tp receive ~ts in state ~tp~n",
+              [Name,event_string(Event),State]);
+        {code_change,Event,State} ->
+            io:format(
+              Dev, "*DBG* ~tp receive ~ts after code change in state ~tp~n",
+              [Name,event_string(Event),State]);
+        {out,Reply,{To,_Tag}} ->
+            io:format(
+              Dev, "*DBG* ~tp send ~tp to ~tw~n",
+              [Name,Reply,To]);
+        {enter,State} ->
+            io:format(
+              Dev, "*DBG* ~tp enter in state ~tp~n",
+              [Name,State]);
+        {terminate,Reason,State} ->
+            io:format(
+              Dev, "*DBG* ~tp terminate ~tp in state ~tp~n",
+              [Name,Reason,State]);
+        {Tag,Event,State,NextState}
+          when Tag =:= postpone; Tag =:= consume ->
+            StateString =
+                case NextState of
+                    State ->
+                        io_lib:format("~tp", [State]);
+                    _ ->
+                        io_lib:format("~tp => ~tp", [State,NextState])
+                end,
+            io:format(
+              Dev, "*DBG* ~tp ~tw ~ts in state ~ts~n",
+              [Name,Tag,event_string(Event),StateString])
+    end.
 
 event_string(Event) ->
     case Event of
 	{{call,{Pid,_Tag}},Request} ->
-	    io_lib:format("call ~tp from ~w", [Request,Pid]);
+	    io_lib:format("call ~tp from ~tw", [Request,Pid]);
 	{EventType,EventContent} ->
 	    io_lib:format("~tw ~tp", [EventType,EventContent])
     end.
@@ -846,942 +889,1169 @@ event_string(Event) ->
 %%%==========================================================================
 %%% Internal callbacks
 
-wakeup_from_hibernate(Parent, Debug, S) ->
+wakeup_from_hibernate(P, Debug, S) ->
     %% It is a new message that woke us up so we have to receive it now
-    loop_receive(Parent, Debug, S).
+    loop_receive(P, Debug, S).
 
 %%%==========================================================================
-%%% State Machine engine implementation of proc_lib/gen server
+%%% State Machine engine implementation on proc_lib/gen
 
 %% Server loop, consists of all loop* functions
 %% and detours through sys:handle_system_message/7 and proc_lib:hibernate/3
+%%
+%% The loop tries to keep all temporary values in arguments
+%% and takes shortcuts for ?not_sys_debug, empty lists, etc.
+%% The engine state #state{} is picked apart during the loop,
+%% new values are kept in arguments, and a new #state{} is
+%% composed at the end of the loop.  #params{} collect engine
+%% state fields that rarely changes.
+%%
+%% The loop is optimized a bit for staying in the loop, assuming that
+%% system events are rare.  So a detour to sys requires re-packing
+%% of the engine state.
 
 %% Entry point for system_continue/3
-loop(Parent, Debug, #state{hibernate = true, cancel_timers = 0} = S) ->
-    loop_hibernate(Parent, Debug, S);
-loop(Parent, Debug, S) ->
-    loop_receive(Parent, Debug, S).
+%%
+loop(P, Debug, #state{hibernate = true} = S) ->
+    loop_hibernate(P, Debug, S);
+loop(P, Debug, S) ->
+    loop_receive(P, Debug, S).
 
-loop_hibernate(Parent, Debug, S) ->
+%% Go to hibernation
+%%
+loop_hibernate(P, Debug, S) ->
     %%
     %% Does not return but restarts process at
     %% wakeup_from_hibernate/3 that jumps to loop_receive/3
     %%
-    proc_lib:hibernate(
-      ?MODULE, wakeup_from_hibernate, [Parent,Debug,S]),
+    proc_lib:hibernate(?MODULE, wakeup_from_hibernate, [P, Debug, S]),
     error(
       {should_not_have_arrived_here_but_instead_in,
-       {wakeup_from_hibernate,3}}).
+       {?MODULE,wakeup_from_hibernate,3}}).
+
 
 %% Entry point for wakeup_from_hibernate/3
+%%
+%% Receive a new process message
+%%
 loop_receive(
-  Parent, Debug, #state{hibernate_after = HibernateAfterTimeout} = S) ->
+  #params{hibernate_after = HibernateAfterTimeout} = P, Debug, S) ->
     %%
     receive
 	Msg ->
 	    case Msg of
+                {'$gen_call',From,Request} ->
+                    loop_receive_result(P, Debug, S, {{call,From},Request});
+                {'$gen_cast',Cast} ->
+                    loop_receive_result(P, Debug, S, {cast,Cast});
+                %%
+		{timeout,TimerRef,TimeoutMsg} ->
+                    {TimerRefs,TimeoutTypes} = S#state.timers,
+                    case TimerRefs of
+                        #{TimerRef := TimeoutType} ->
+                            %% Our timer
+                            Timers =
+                                {maps:remove(TimerRef, TimerRefs),
+                                 maps:remove(TimeoutType, TimeoutTypes)},
+                            S_1 = S#state{timers = Timers},
+                            loop_receive_result(
+                              P, Debug, S_1, {TimeoutType,TimeoutMsg});
+                        #{} ->
+			    loop_receive_result(P, Debug, S, {info,Msg})
+		    end;
+                %%
 		{system,Pid,Req} ->
 		    %% Does not return but tail recursively calls
 		    %% system_continue/3 that jumps to loop/3
 		    sys:handle_system_msg(
-		      Req, Pid, Parent, ?MODULE, Debug, S,
+		      Req, Pid, P#params.parent, ?MODULE, Debug,
+                      {P,S},
 		      S#state.hibernate);
-		{'EXIT',Parent,Reason} = EXIT ->
-		    %% EXIT is not a 2-tuple therefore
-		    %% not an event but this will stand out
-		    %% in the crash report...
-		    Q = [EXIT],
-		    terminate(exit, Reason, ?STACKTRACE(), Debug, S, Q);
-		{timeout,TimerRef,TimerMsg} ->
-		    #state{
-                       timer_refs = TimerRefs,
-                       timer_types = TimerTypes} = S,
-		    case TimerRefs of
-			#{TimerRef := TimerType} ->
-			    %% We know of this timer; is it a running
-			    %% timer or a timer being cancelled that
-			    %% managed to send a late timeout message?
-			    case TimerTypes of
-				#{TimerType := TimerRef} ->
-				    %% The timer type maps back to this
-				    %% timer ref, so it was a running timer
-				    %% Unregister the triggered timeout
-				    NewTimerRefs =
-					maps:remove(TimerRef, TimerRefs),
-				    NewTimerTypes =
-					maps:remove(TimerType, TimerTypes),
-				    loop_receive_result(
-				      Parent, Debug,
-				      S#state{
-					timer_refs = NewTimerRefs,
-					timer_types = NewTimerTypes},
-				      TimerType, TimerMsg);
-				_ ->
-				    %% This was a late timeout message
-				    %% from timer being cancelled, so
-				    %% ignore it and expect a cancel_timer
-				    %% msg shortly
-				    loop_receive(Parent, Debug, S)
-			    end;
-			_ ->
-			    %% Not our timer; present it as an event
-			    loop_receive_result(Parent, Debug, S, info, Msg)
-		    end;
-		{cancel_timer,TimerRef,_} ->
-		    #state{
-                       timer_refs = TimerRefs,
-                       cancel_timers = CancelTimers,
-                       hibernate = Hibernate} = S,
-		    case TimerRefs of
-			#{TimerRef := _} ->
-			    %% We must have requested a cancel
-			    %% of this timer so it is already
-			    %% removed from TimerTypes
-			    NewTimerRefs =
-				maps:remove(TimerRef, TimerRefs),
-			    NewCancelTimers = CancelTimers - 1,
-			    NewS =
-				S#state{
-				  timer_refs = NewTimerRefs,
-				  cancel_timers = NewCancelTimers},
-			    if
-				Hibernate =:= true, NewCancelTimers =:= 0 ->
-				    %% No more cancel_timer msgs to expect;
-				    %% we can hibernate
-				    loop_hibernate(Parent, Debug, NewS);
-				NewCancelTimers >= 0 -> % Assert
-				    loop_receive(Parent, Debug, NewS)
-			    end;
-			_ ->
-			    %% Not our cancel_timer msg;
-			    %% present it as an event
-			    loop_receive_result(Parent, Debug, S, info, Msg)
-		    end;
-		_ ->
-		    %% External msg
-                    case Msg of
-                        {'$gen_call',From,Request} ->
-                            loop_receive_result(
-                              Parent, Debug, S, {call,From}, Request);
-                        {'$gen_cast',Cast} ->
-                            loop_receive_result(Parent, Debug, S, cast, Cast);
+		{'EXIT',Pid,Reason} ->
+                    case P#params.parent of
+                        Pid ->
+                            terminate(
+                              exit, Reason, ?STACKTRACE(), P, Debug, S, []);
                         _ ->
-                            loop_receive_result(Parent, Debug, S, info, Msg)
-                    end
+                            loop_receive_result(P, Debug, S, {info,Msg})
+                    end;
+                %%
+                _ ->
+                    loop_receive_result(P, Debug, S, {info,Msg})
 	    end
     after
-	    HibernateAfterTimeout ->
-		    loop_hibernate(Parent, Debug, S)
+        HibernateAfterTimeout ->
+            loop_hibernate(P, Debug, S)
     end.
 
-loop_receive_result(Parent, ?not_sys_debug, S, Type, Content) ->
+%% We have received an event
+%%
+loop_receive_result(P, ?not_sys_debug = Debug, S, Event) ->
     %% Here is the queue of not yet handled events created
     Events = [],
-    loop_event(Parent, ?not_sys_debug, S, Events, Type, Content);
+    loop_event(P, Debug, S, Event, Events);
 loop_receive_result(
-  Parent, Debug, #state{name = Name, state = State} = S, Type, Content) ->
-    NewDebug = sys_debug(Debug, {Name,State}, {in,{Type,Content}}),
+  #params{name = Name, callback_mode = CallbackMode} = P, Debug,
+  #state{state_data = {State,_Data}} = S, Event) ->
+    Debug_1 =
+        case CallbackMode of
+            undefined ->
+                sys_debug(Debug, Name, {code_change,Event,State});
+            _ ->
+                sys_debug(Debug, Name, {in,Event,State})
+        end,
     %% Here is the queue of not yet handled events created
     Events = [],
-    loop_event(Parent, NewDebug, S, Events, Type, Content).
+    loop_event(P, Debug_1, S, Event, Events).
 
-%% Entry point for handling an event, received or enqueued
+%% Handle one event; received or enqueued
+%%
 loop_event(
-  Parent, Debug, #state{hibernate = Hibernate} = S,
-  Events, Type, Content) ->
+  P, Debug, #state{hibernate = true} = S, Event, Events) ->
     %%
-    case Hibernate of
-        true ->
-            %%
-            %% If (this old) Hibernate is true here it can only be
-            %% because it was set from an event action
-            %% and we did not go into hibernation since there were
-            %% events in queue, so we do what the user
-            %% might rely on i.e collect garbage which
-            %% would have happened if we actually hibernated
-            %% and immediately was awakened.
-            %%
-            _ = garbage_collect(),
-            loop_event_state_function(
-              Parent, Debug, S, Events, Type, Content);
-        false ->
-            loop_event_state_function(
-              Parent, Debug, S, Events, Type, Content)
-    end.
+    %% If (this old) Hibernate is true here it can only be
+    %% because it was set from an event action
+    %% and we did not go into hibernation since there were
+    %% events in queue, so we do what the user
+    %% might rely on i.e collect garbage which
+    %% would have happened if we actually hibernated
+    %% and immediately was awakened.
+    %%
+    _ = garbage_collect(),
+    loop_event_handler(P, Debug, S, Event, Events);
+loop_event(P, Debug, S, Event, Events) ->
+    loop_event_handler(P, Debug, S, Event, Events).
 
-%% Call the state function
-loop_event_state_function(
-  Parent, Debug,
-  #state{state = State, data = Data} = S,
-  Events, Type, Content) ->
+%% Call the state function, eventually
+%%
+-compile({inline, [loop_event_handler/5]}).
+loop_event_handler(
+  P, Debug, #state{state_data = State_Data} = S, Event, Events) ->
     %%
     %% The field 'hibernate' in S is now invalid and will be
-    %% restored when looping back to loop/3 or loop_event/6.
+    %% restored when looping back to loop/3 or loop_event/5.
     %%
-    Event = {Type,Content},
-    TransOpts = false,
-    case call_state_function(S, Type, Content, State, Data) of
-        {Result, NewS} ->
-            loop_event_result(
-              Parent, Debug, NewS,
-              Events, Event, State, Data, TransOpts, Result);
-	[Class,Reason,Stacktrace] ->
-	    terminate(
-	      Class, Reason, Stacktrace, Debug, S, [Event|Events])
-    end.
+    Q = [Event|Events],
+    loop_callback_mode(P, Debug, S, Q, State_Data, Event).
 
-%% Make a state enter call to the state function
-loop_event_state_enter(
-  Parent, Debug, #state{state = PrevState} = S,
-  Events, Event, NextState, NewData, TransOpts) ->
+%% Figure out the callback mode
+%%
+loop_callback_mode(
+  #params{callback_mode = undefined} = P, Debug, S,
+  Q, State_Data, CallbackEvent) ->
     %%
-    case call_state_function(S, enter, PrevState, NextState, NewData) of
-        {Result, NewS} ->
-            loop_event_result(
-              Parent, Debug, NewS,
-              Events, Event, NextState, NewData, TransOpts, Result);
-	[Class,Reason,Stacktrace] ->
+    Module = P#params.module,
+    try Module:callback_mode() of
+	CallbackMode ->
+	    loop_callback_mode_result(
+              P, Debug, S,
+              Q, State_Data, CallbackEvent,
+              CallbackMode, listify(CallbackMode), undefined, false)
+    catch
+	CallbackMode ->
+	    loop_callback_mode_result(
+              P, Debug, S,
+              Q, State_Data, CallbackEvent,
+              CallbackMode, listify(CallbackMode), undefined, false);
+	Class:Reason:Stacktrace ->
 	    terminate(
-	      Class, Reason, Stacktrace, Debug, S, [Event|Events])
+	      Class, Reason, Stacktrace, P, Debug, S, Q)
+    end;
+loop_callback_mode(P, Debug, S, Q, State_Data, CallbackEvent) ->
+    loop_state_callback(P, Debug, S, Q, State_Data, CallbackEvent).
+
+%% Check the result of Module:callback_mode()
+%%
+loop_callback_mode_result(
+  P, Debug, S, Q, State_Data, CallbackEvent,
+  CallbackMode, [H|T], NewCallbackMode, NewStateEnter) ->
+    %%
+    case callback_mode(H) of
+        true ->
+            loop_callback_mode_result(
+              P, Debug, S, Q, State_Data, CallbackEvent,
+              CallbackMode, T, H, NewStateEnter);
+        false ->
+            case state_enter(H) of
+                true ->
+                    loop_callback_mode_result(
+                      P, Debug, S, Q, State_Data, CallbackEvent,
+                      CallbackMode, T, NewCallbackMode, true);
+                false ->
+                    terminate(
+                      error,
+                      {bad_return_from_callback_mode,CallbackMode},
+                      ?STACKTRACE(),
+                      P, Debug, S, Q)
+            end
+    end;
+loop_callback_mode_result(
+  P, Debug, S, Q, State_Data, CallbackEvent,
+  CallbackMode, [], NewCallbackMode, NewStateEnter) ->
+    %%
+    case NewCallbackMode of
+        undefined ->
+            terminate(
+              error,
+              {bad_return_from_callback_mode,CallbackMode},
+              ?STACKTRACE(),
+              P, Debug, S, Q);
+        _ ->
+            P_1 =
+                P#params{
+                  callback_mode = NewCallbackMode,
+                  state_enter = NewStateEnter},
+            loop_state_callback(
+              P_1, Debug, S, Q, State_Data, CallbackEvent)
     end.
 
-%% Process the result from the state function.
-%% When TransOpts =:= false it was a state function call,
-%% otherwise it is an option tuple and it was a state enter call.
+
+%% Make a state enter call to the state function, we loop back here
+%% from further down if state enter calls are enabled
+%%
+loop_state_enter(
+  P, Debug, #state{state_data = {PrevState,_PrevData}} = S,
+  Q, NextState_NewData,
+  NextEventsR, Hibernate, TimeoutsR, Postpone) ->
+    %%
+    StateCall = false,
+    CallbackEvent = {enter,PrevState},
+    loop_state_callback(
+      P, Debug, S, Q, NextState_NewData,
+      NextEventsR, Hibernate, TimeoutsR, Postpone,
+      StateCall, CallbackEvent).
+
+%% Make a state call (not state enter call) to the state function
+%%
+loop_state_callback(P, Debug, S, Q, State_Data, CallbackEvent) ->
+    NextEventsR = [],
+    Hibernate = false,
+    TimeoutsR = [],
+    Postpone = false,
+    StateCall = true,
+    loop_state_callback(
+      P, Debug, S, Q, State_Data,
+      NextEventsR, Hibernate, TimeoutsR, Postpone,
+      StateCall, CallbackEvent).
+%%
+loop_state_callback(
+  #params{callback_mode = CallbackMode, module = Module} = P,
+  Debug, S, Q, {State,Data} = State_Data,
+  NextEventsR, Hibernate, TimeoutsR, Postpone,
+  StateCall, {Type,Content}) ->
+    try
+	case CallbackMode of
+	    state_functions ->
+		Module:State(Type, Content, Data);
+	    handle_event_function ->
+		Module:handle_event(Type, Content, State, Data)
+	end
+    of
+	Result ->
+            loop_state_callback_result(
+              P, Debug, S, Q, State_Data,
+              NextEventsR, Hibernate, TimeoutsR, Postpone,
+              StateCall, Result)
+    catch
+	Result ->
+            loop_state_callback_result(
+              P, Debug, S, Q, State_Data,
+              NextEventsR, Hibernate, TimeoutsR, Postpone,
+              StateCall, Result);
+	Class:Reason:Stacktrace ->
+	    terminate(Class, Reason, Stacktrace, P, Debug, S, Q)
+    end;
+loop_state_callback(
+  P, Debug, S, Q, State_Data,
+  NextEventsR, Hibernate, TimeoutsR, Postpone,
+  StateCall, Actions) when is_list(Actions) ->
+    %% Tunneled actions from enter/8
+    CallEnter = true,
+    loop_actions_list(
+      P, Debug, S, Q, State_Data,
+      NextEventsR, Hibernate, TimeoutsR, Postpone,
+      CallEnter, StateCall, Actions).
+
+%% Process the result from the state function
 %%
-loop_event_result(
-  Parent, Debug, S,
-  Events, Event, State, Data, TransOpts, Result) ->
+loop_state_callback_result(
+  P, Debug, S, Q, {State,_Data} = State_Data,
+  NextEventsR, Hibernate, TimeoutsR, Postpone,
+  StateCall, Result) ->
     %%
     case Result of
 	{next_state,State,NewData} ->
-            loop_event_actions(
-              Parent, Debug, S,
-              Events, Event, State, NewData, TransOpts,
-              [], false);
+            loop_actions(
+              P, Debug, S, Q, {State,NewData},
+              NextEventsR, Hibernate, TimeoutsR, Postpone,
+              false);
 	{next_state,NextState,NewData}
-          when TransOpts =:= false ->
-            loop_event_actions(
-              Parent, Debug, S,
-              Events, Event, NextState, NewData, TransOpts,
-              [], true);
+          when StateCall ->
+            loop_actions(
+              P, Debug, S, Q, {NextState,NewData},
+              NextEventsR, Hibernate, TimeoutsR, Postpone,
+              true);
 	{next_state,_NextState,_NewData} ->
             terminate(
               error,
               {bad_state_enter_return_from_state_function,Result},
-              ?STACKTRACE(), Debug,
+              ?STACKTRACE(), P, Debug,
               S#state{
-                state = State, data = Data,
-                hibernate = hibernate_in_trans_opts(TransOpts)},
-              [Event|Events]);
+                state_data = State_Data,
+                hibernate = Hibernate},
+              Q);
 	{next_state,State,NewData,Actions} ->
-            loop_event_actions(
-              Parent, Debug, S,
-              Events, Event, State, NewData, TransOpts,
-              Actions, false);
+            loop_actions(
+              P, Debug, S, Q, {State,NewData},
+              NextEventsR, Hibernate, TimeoutsR, Postpone,
+              false, StateCall, Actions);
 	{next_state,NextState,NewData,Actions}
-          when TransOpts =:= false ->
-            loop_event_actions(
-              Parent, Debug, S,
-              Events, Event, NextState, NewData, TransOpts,
-              Actions, true);
+          when StateCall ->
+            loop_actions(
+              P, Debug, S, Q, {NextState,NewData},
+              NextEventsR, Hibernate, TimeoutsR, Postpone,
+              true, StateCall, Actions);
 	{next_state,_NextState,_NewData,_Actions} ->
             terminate(
               error,
               {bad_state_enter_return_from_state_function,Result},
-              ?STACKTRACE(), Debug,
+              ?STACKTRACE(), P, Debug,
               S#state{
-                state = State, data = Data,
-                hibernate = hibernate_in_trans_opts(TransOpts)},
-              [Event|Events]);
+                state_data = State_Data,
+                hibernate = Hibernate},
+              Q);
         %%
         {keep_state,NewData} ->
-            loop_event_actions(
-              Parent, Debug, S,
-              Events, Event, State, NewData, TransOpts,
-              [], false);
+            loop_actions(
+              P, Debug, S, Q, {State,NewData},
+              NextEventsR, Hibernate, TimeoutsR, Postpone,
+              false);
         {keep_state,NewData,Actions} ->
-            loop_event_actions(
-              Parent, Debug, S,
-              Events, Event, State, NewData, TransOpts,
-              Actions, false);
+            loop_actions(
+              P, Debug, S, Q, {State,NewData},
+              NextEventsR, Hibernate, TimeoutsR, Postpone,
+              false, StateCall, Actions);
         %%
         keep_state_and_data ->
-            loop_event_actions(
-              Parent, Debug, S,
-              Events, Event, State, Data, TransOpts,
-              [], false);
+            loop_actions(
+              P, Debug, S, Q, State_Data,
+              NextEventsR, Hibernate, TimeoutsR, Postpone,
+              false);
         {keep_state_and_data,Actions} ->
-            loop_event_actions(
-              Parent, Debug, S,
-              Events, Event, State, Data, TransOpts,
-              Actions, false);
+            loop_actions(
+              P, Debug, S, Q, State_Data,
+              NextEventsR, Hibernate, TimeoutsR, Postpone,
+              false, StateCall, Actions);
         %%
         {repeat_state,NewData} ->
-            loop_event_actions(
-              Parent, Debug, S,
-              Events, Event, State, NewData, TransOpts,
-              [], true);
+            loop_actions(
+              P, Debug, S, Q, {State,NewData},
+              NextEventsR, Hibernate, TimeoutsR, Postpone,
+              true);
         {repeat_state,NewData,Actions} ->
-            loop_event_actions(
-              Parent, Debug, S,
-              Events, Event, State, NewData, TransOpts,
-              Actions, true);
+            loop_actions(
+              P, Debug, S, Q, {State,NewData},
+              NextEventsR, Hibernate, TimeoutsR, Postpone,
+              true, StateCall, Actions);
         %%
         repeat_state_and_data ->
-            loop_event_actions(
-              Parent, Debug, S,
-              Events, Event, State, Data, TransOpts,
-              [], true);
+            loop_actions(
+              P, Debug, S, Q, State_Data,
+              NextEventsR, Hibernate, TimeoutsR, Postpone,
+              true);
         {repeat_state_and_data,Actions} ->
-            loop_event_actions(
-              Parent, Debug, S,
-              Events, Event, State, Data, TransOpts,
-              Actions, true);
+            loop_actions(
+              P, Debug, S, Q, State_Data,
+              NextEventsR, Hibernate, TimeoutsR, Postpone,
+              true, StateCall, Actions);
         %%
 	stop ->
             terminate(
-              exit, normal, ?STACKTRACE(), Debug,
+              exit, normal, ?STACKTRACE(), P, Debug,
               S#state{
-                state = State, data = Data,
-                hibernate = hibernate_in_trans_opts(TransOpts)},
-              [Event|Events]);
+                state_data = State_Data,
+                hibernate = Hibernate},
+              Q);
 	{stop,Reason} ->
             terminate(
-              exit, Reason, ?STACKTRACE(), Debug,
+              exit, Reason, ?STACKTRACE(), P, Debug,
               S#state{
-                state = State, data = Data,
-                hibernate = hibernate_in_trans_opts(TransOpts)},
-              [Event|Events]);
+                state_data = State_Data,
+                hibernate = Hibernate},
+              Q);
 	{stop,Reason,NewData} ->
             terminate(
-              exit, Reason, ?STACKTRACE(), Debug,
+              exit, Reason, ?STACKTRACE(), P, Debug,
               S#state{
-                state = State, data = NewData,
-                hibernate = hibernate_in_trans_opts(TransOpts)},
-              [Event|Events]);
+                state_data = {State,NewData},
+                hibernate = Hibernate},
+              Q);
 	%%
 	{stop_and_reply,Reason,Replies} ->
             reply_then_terminate(
-              exit, Reason, ?STACKTRACE(), Debug,
+              exit, Reason, ?STACKTRACE(), P, Debug,
               S#state{
-                state = State, data = Data,
-                hibernate = hibernate_in_trans_opts(TransOpts)},
-              [Event|Events], Replies);
+                state_data = State_Data,
+                hibernate = Hibernate},
+              Q, Replies);
 	{stop_and_reply,Reason,Replies,NewData} ->
             reply_then_terminate(
-              exit, Reason, ?STACKTRACE(), Debug,
+              exit, Reason, ?STACKTRACE(), P, Debug,
               S#state{
-                state = State, data = NewData,
-                hibernate = hibernate_in_trans_opts(TransOpts)},
-              [Event|Events], Replies);
+                state_data = {State,NewData},
+                hibernate = Hibernate},
+              Q, Replies);
 	%%
 	_ ->
             terminate(
               error,
               {bad_return_from_state_function,Result},
-              ?STACKTRACE(), Debug,
+              ?STACKTRACE(), P, Debug,
               S#state{
-                state = State, data = Data,
-                hibernate = hibernate_in_trans_opts(TransOpts)},
-              [Event|Events])
+                state_data = State_Data,
+                hibernate = Hibernate},
+              Q)
     end.
 
 %% Ensure that Actions are a list
-loop_event_actions(
-  Parent, Debug, S,
-  Events, Event, NextState, NewerData, TransOpts,
-  Actions, CallEnter) ->
-    loop_event_actions_list(
-      Parent, Debug, S,
-      Events, Event, NextState, NewerData, TransOpts,
-      listify(Actions), CallEnter).
-
-%% Process actions from the state function
-loop_event_actions_list(
-  Parent, Debug, #state{state_enter = StateEnter} = S,
-  Events, Event, NextState, NewerData, TransOpts,
-  Actions, CallEnter) ->
+%%
+loop_actions(
+  P, Debug, S, Q, NextState_NewData,
+  NextEventsR, Hibernate, TimeoutsR, Postpone,
+  CallEnter, _StateCall, []) ->
+    loop_actions(
+      P, Debug, S, Q, NextState_NewData,
+      NextEventsR, Hibernate, TimeoutsR, Postpone,
+      CallEnter);
+loop_actions(
+  P, Debug, S, Q, NextState_NewData,
+  NextEventsR, Hibernate, TimeoutsR, Postpone,
+  CallEnter, StateCall, Actions) ->
     %%
-    case parse_actions(TransOpts, Debug, S, Actions) of
-        {NewDebug,NewTransOpts}
-          when StateEnter, CallEnter ->
-            loop_event_state_enter(
-              Parent, NewDebug, S,
-              Events, Event, NextState, NewerData, NewTransOpts);
-        {NewDebug,NewTransOpts} ->
-            loop_event_done(
-              Parent, NewDebug, S,
-              Events, Event, NextState, NewerData, NewTransOpts);
-        [Class,Reason,Stacktrace,NewDebug] ->
-            terminate(
-              Class, Reason, Stacktrace, NewDebug,
-              S#state{
-                state = NextState,
-                data = NewerData,
-                hibernate = hibernate_in_trans_opts(TransOpts)},
-              [Event|Events])
+    loop_actions_list(
+      P, Debug, S, Q, NextState_NewData,
+      NextEventsR, Hibernate, TimeoutsR, Postpone,
+      CallEnter, StateCall, listify(Actions)).
+%%
+%% Shortcut for no actions
+-compile({inline, [loop_actions/10]}).
+loop_actions(
+  P, Debug, S, Q, NextState_NewData,
+  NextEventsR, Hibernate, TimeoutsR, Postpone,
+  CallEnter) ->
+    %%
+    %% Shortcut for no actions
+    case CallEnter andalso P#params.state_enter of
+	true ->
+            loop_state_enter(
+              P, Debug, S, Q, NextState_NewData,
+              NextEventsR, Hibernate, TimeoutsR, Postpone);
+	false ->
+            loop_state_transition(
+              P, Debug, S, Q, NextState_NewData,
+              NextEventsR, Hibernate, TimeoutsR, Postpone)
     end.
 
--compile({inline, [hibernate_in_trans_opts/1]}).
-hibernate_in_trans_opts(false) ->
-    (#trans_opts{})#trans_opts.hibernate;
-hibernate_in_trans_opts(#trans_opts{hibernate = Hibernate}) ->
-    Hibernate.
-
-parse_actions(false, Debug, S, Actions) ->
-    parse_actions(true, Debug, S, Actions, #trans_opts{});
-parse_actions(TransOpts, Debug, S, Actions) ->
-    parse_actions(false, Debug, S, Actions, TransOpts).
+%% Process the returned actions
 %%
-parse_actions(_StateCall, Debug, _S, [], TransOpts) ->
-    {Debug,TransOpts};
-parse_actions(StateCall, Debug, S, [Action|Actions], TransOpts) ->
+loop_actions_list(
+  P, Debug, S, Q, NextState_NewData,
+  NextEventsR, Hibernate, TimeoutsR, Postpone,
+  CallEnter, _StateCall, []) ->
+    %%
+    case P#params.state_enter of
+        true when CallEnter ->
+            loop_state_enter(
+              P, Debug, S, Q, NextState_NewData,
+              NextEventsR, Hibernate, TimeoutsR, Postpone);
+        _ ->
+            loop_state_transition(
+              P, Debug, S, Q, NextState_NewData,
+              NextEventsR, Hibernate, TimeoutsR, Postpone)
+    end;
+loop_actions_list(
+  P, Debug, S, Q, NextState_NewData,
+  NextEventsR, Hibernate, TimeoutsR, Postpone,
+  CallEnter, StateCall, [Action|Actions]) ->
+    %%
     case Action of
 	%% Actual actions
 	{reply,From,Reply} ->
-            parse_actions_reply(
-              StateCall, Debug, S, Actions, TransOpts, From, Reply);
+            loop_actions_reply(
+              P, Debug, S, Q, NextState_NewData,
+              NextEventsR, Hibernate, TimeoutsR, Postpone,
+              CallEnter, StateCall, Actions,
+              From, Reply);
 	%%
 	%% Actions that set options
-	{hibernate,NewHibernate} when is_boolean(NewHibernate) ->
-            parse_actions(
-              StateCall, Debug, S, Actions,
-              TransOpts#trans_opts{hibernate = NewHibernate});
+	{hibernate,Hibernate_1} when is_boolean(Hibernate_1) ->
+            loop_actions_list(
+              P, Debug, S, Q, NextState_NewData,
+              NextEventsR, Hibernate_1, TimeoutsR, Postpone,
+              CallEnter, StateCall, Actions);
 	hibernate ->
-            parse_actions(
-              StateCall, Debug, S, Actions,
-              TransOpts#trans_opts{hibernate = true});
+            loop_actions_list(
+              P, Debug, S, Q, NextState_NewData,
+              NextEventsR, true, TimeoutsR, Postpone,
+              CallEnter, StateCall, Actions);
 	%%
-	{postpone,NewPostpone} when not NewPostpone orelse StateCall ->
-            parse_actions(
-              StateCall, Debug, S, Actions,
-              TransOpts#trans_opts{postpone = NewPostpone});
+	{postpone,Postpone_1} when not Postpone_1 orelse StateCall ->
+            loop_actions_list(
+              P, Debug, S, Q, NextState_NewData,
+              NextEventsR, Hibernate, TimeoutsR, Postpone_1,
+              CallEnter, StateCall, Actions);
 	postpone when StateCall ->
-            parse_actions(
-              StateCall, Debug, S, Actions,
-              TransOpts#trans_opts{postpone = true});
+            loop_actions_list(
+              P, Debug, S, Q, NextState_NewData,
+              NextEventsR, Hibernate, TimeoutsR, true,
+              CallEnter, StateCall, Actions);
 	postpone ->
-            [error,
-             {bad_state_enter_action_from_state_function,Action},
-             ?STACKTRACE(),
-             Debug];
+            terminate(
+              error,
+              {bad_state_enter_action_from_state_function,Action},
+              ?STACKTRACE(), P, Debug,
+              S#state{
+                state_data = NextState_NewData,
+                hibernate = Hibernate},
+              Q);
 	%%
 	{next_event,Type,Content} ->
-            parse_actions_next_event(
-              StateCall, Debug, S, Actions, TransOpts, Type, Content);
+            loop_actions_next_event(
+              P, Debug, S, Q, NextState_NewData,
+              NextEventsR, Hibernate, TimeoutsR, Postpone,
+              CallEnter, StateCall, Actions, Type, Content);
 	%%
-        _ ->
-            parse_actions_timeout(
-              StateCall, Debug, S, Actions, TransOpts, Action)
+        Timeout ->
+            loop_actions_timeout(
+              P, Debug, S, Q, NextState_NewData,
+              NextEventsR, Hibernate, TimeoutsR, Postpone,
+              CallEnter, StateCall, Actions, Timeout)
     end.
 
-parse_actions_reply(
-  StateCall, ?not_sys_debug, S, Actions, TransOpts,
+%% Process a reply action
+%%
+loop_actions_reply(
+  P, Debug, S, Q, NextState_NewData,
+  NextEventsR, Hibernate, TimeoutsR, Postpone,
+  CallEnter, StateCall, Actions,
   From, Reply) ->
     %%
     case from(From) of
         true ->
+            %% No need for a separate ?not_sys_debug clause here
+            %% since the external call to erlang:'!'/2 in reply/2
+            %% will cause swap out of all live registers anyway
             reply(From, Reply),
-            parse_actions(StateCall, ?not_sys_debug, S, Actions, TransOpts);
-        false ->
-            [error,
-             {bad_action_from_state_function,{reply,From,Reply}},
-             ?STACKTRACE(),
-             ?not_sys_debug]
-    end;
-parse_actions_reply(
-  StateCall, Debug, #state{name = Name, state = State} = S,
-  Actions, TransOpts, From, Reply) ->
-    %%
-    case from(From) of
-        true ->
-            reply(From, Reply),
-            NewDebug = sys_debug(Debug, {Name,State}, {out,Reply,From}),
-            parse_actions(StateCall, NewDebug, S, Actions, TransOpts);
+            Debug_1 = ?sys_debug(Debug, P#params.name, {out,Reply,From}),
+            loop_actions_list(
+              P, Debug_1, S, Q, NextState_NewData,
+              NextEventsR, Hibernate, TimeoutsR, Postpone,
+              CallEnter, StateCall, Actions);
         false ->
-            [error,
-             {bad_action_from_state_function,{reply,From,Reply}},
-             ?STACKTRACE(),
-             Debug]
+            terminate(
+              error,
+              {bad_action_from_state_function,{reply,From,Reply}},
+              ?STACKTRACE(), P, Debug,
+              S#state{
+                state_data = NextState_NewData,
+                hibernate = Hibernate},
+              Q)
     end.
 
-parse_actions_next_event(
-  StateCall, ?not_sys_debug, S,
-  Actions, TransOpts, Type, Content) ->
-    case event_type(Type) of
-        true when StateCall ->
-            NextEventsR = TransOpts#trans_opts.next_events_r,
-            parse_actions(
-              StateCall, ?not_sys_debug, S, Actions,
-              TransOpts#trans_opts{
-                next_events_r = [{Type,Content}|NextEventsR]});
-        _ ->
-            [error,
-             {bad_state_enter_action_from_state_function,
-	      {next_event,Type,Content}},
-             ?STACKTRACE(),
-             ?not_sys_debug]
-    end;
-parse_actions_next_event(
-  StateCall, Debug, #state{name = Name, state = State} = S,
-  Actions, TransOpts, Type, Content) ->
+%% Process a next_event action
+%%
+loop_actions_next_event(
+  P, Debug, S, Q, NextState_NewData,
+  NextEventsR, Hibernate, TimeoutsR, Postpone,
+  CallEnter, StateCall, Actions, Type, Content) ->
     case event_type(Type) of
         true when StateCall ->
-            NewDebug = sys_debug(Debug, {Name,State}, {in,{Type,Content}}),
-            NextEventsR = TransOpts#trans_opts.next_events_r,
-            parse_actions(
-              StateCall, NewDebug, S, Actions,
-              TransOpts#trans_opts{
-                next_events_r = [{Type,Content}|NextEventsR]});
+            NextEvent = {Type,Content},
+            case Debug of
+                ?not_sys_debug ->
+                    loop_actions_list(
+                      P, Debug, S, Q, NextState_NewData,
+                      [NextEvent|NextEventsR],
+                      Hibernate, TimeoutsR, Postpone,
+                      CallEnter, StateCall, Actions);
+                _ ->
+                    Name = P#params.name,
+                    {State,_Data} = S#state.state_data,
+                    Debug_1 =
+                        sys_debug(Debug, Name, {in,{Type,Content},State}),
+                    loop_actions_list(
+                      P, Debug_1, S, Q, NextState_NewData,
+                      [NextEvent|NextEventsR],
+                      Hibernate, TimeoutsR, Postpone,
+                      CallEnter, StateCall, Actions)
+              end;
         _ ->
-            [error,
-             {bad_state_enter_action_from_state_function,
-	      {next_event,Type,Content}},
-             ?STACKTRACE(),
-             Debug]
+            terminate(
+              error,
+              {if
+                   StateCall ->
+                       bad_action_from_state_function;
+                   true ->
+                       bad_state_enter_action_from_state_function
+               end,
+               {next_event,Type,Content}},
+              ?STACKTRACE(), P, Debug,
+              S#state{
+                state_data = NextState_NewData,
+                hibernate = Hibernate},
+              Q)
     end.
 
-parse_actions_timeout(
-  StateCall, Debug, S, Actions, TransOpts,
-  {TimeoutType,Time,TimerMsg,TimerOpts} = AbsoluteTimeout) ->
+%% Process a timeout action, or also any unrecognized action
+%%
+loop_actions_timeout(
+  P, Debug, S, Q, NextState_NewData,
+  NextEventsR, Hibernate, TimeoutsR, Postpone,
+  CallEnter, StateCall, Actions,
+  {TimeoutType,Time,TimeoutMsg,TimeoutOpts} = Timeout) ->
     %%
-    case classify_timeout(TimeoutType, Time, listify(TimerOpts)) of
-        absolute ->
-            parse_actions_timeout_add(
-              StateCall, Debug, S, Actions,
-              TransOpts, AbsoluteTimeout);
-        relative ->
-            RelativeTimeout = {TimeoutType,Time,TimerMsg},
-            parse_actions_timeout_add(
-              StateCall, Debug, S, Actions,
-              TransOpts, RelativeTimeout);
-        badarg ->
-            [error,
-             {bad_action_from_state_function,AbsoluteTimeout},
-             ?STACKTRACE(),
-             Debug]
+    case timeout_event_type(TimeoutType) of
+        true ->
+            case listify(TimeoutOpts) of
+                %% Optimization cases
+                [] when ?relative_timeout(Time) ->
+                    RelativeTimeout = {TimeoutType,Time,TimeoutMsg},
+                    loop_actions_list(
+                      P, Debug, S, Q, NextState_NewData,
+                      NextEventsR, Hibernate,
+                      [RelativeTimeout|TimeoutsR], Postpone,
+                      CallEnter, StateCall, Actions);
+                [{abs,true}] when ?absolute_timeout(Time) ->
+                    loop_actions_list(
+                      P, Debug, S, Q, NextState_NewData,
+                      NextEventsR, Hibernate,
+                      [Timeout|TimeoutsR], Postpone,
+                      CallEnter, StateCall, Actions);
+                [{abs,false}] when ?relative_timeout(Time) ->
+                    RelativeTimeout = {TimeoutType,Time,TimeoutMsg},
+                    loop_actions_list(
+                      P, Debug, S, Q, NextState_NewData,
+                      NextEventsR, Hibernate,
+                      [RelativeTimeout|TimeoutsR], Postpone,
+                      CallEnter, StateCall, Actions);
+                %% Generic case
+                TimeoutOptsList ->
+                    case parse_timeout_opts_abs(TimeoutOptsList) of
+                        true when ?absolute_timeout(Time) ->
+                            loop_actions_list(
+                              P, Debug, S, Q, NextState_NewData,
+                              NextEventsR, Hibernate,
+                              [Timeout|TimeoutsR], Postpone,
+                              CallEnter, StateCall, Actions);
+                        false when ?relative_timeout(Time) ->
+                            RelativeTimeout =
+                                {TimeoutType,Time,TimeoutMsg},
+                            loop_actions_list(
+                              P, Debug, S, Q, NextState_NewData,
+                              NextEventsR, Hibernate,
+                              [RelativeTimeout|TimeoutsR], Postpone,
+                              CallEnter, StateCall, Actions);
+                        badarg ->
+                            terminate(
+                              error,
+                              {bad_action_from_state_function,Timeout},
+                              ?STACKTRACE(), P, Debug,
+                              S#state{
+                                state_data = NextState_NewData,
+                                hibernate = Hibernate},
+                              Q)
+                    end
+            end;
+        false ->
+            terminate(
+              error,
+              {bad_action_from_state_function,Timeout},
+              ?STACKTRACE(), P, Debug,
+              S#state{
+                state_data = NextState_NewData,
+                hibernate = Hibernate},
+              Q)
     end;
-parse_actions_timeout(
-  StateCall, Debug, S, Actions, TransOpts,
-  {TimeoutType,Time,_} = RelativeTimeout) ->
-    case classify_timeout(TimeoutType, Time, []) of
-        relative ->
-            parse_actions_timeout_add(
-              StateCall, Debug, S, Actions,
-              TransOpts, RelativeTimeout);
-        badarg ->
-            [error,
-             {bad_action_from_state_function,RelativeTimeout},
-             ?STACKTRACE(),
-             Debug]
+loop_actions_timeout(
+  P, Debug, S, Q, NextState_NewData,
+  NextEventsR, Hibernate, TimeoutsR, Postpone,
+  CallEnter, StateCall, Actions,
+  {TimeoutType,Time,_} = Timeout) ->
+    %%
+    case timeout_event_type(TimeoutType) of
+        true when ?relative_timeout(Time) ->
+            loop_actions_list(
+              P, Debug, S, Q, NextState_NewData,
+              NextEventsR, Hibernate,
+              [Timeout|TimeoutsR], Postpone,
+              CallEnter, StateCall, Actions);
+        _ ->
+            terminate(
+              error,
+              {bad_action_from_state_function,Timeout},
+              ?STACKTRACE(), P, Debug,
+              S#state{
+                state_data = NextState_NewData,
+                hibernate = Hibernate},
+              Q)
     end;
-parse_actions_timeout(
-  StateCall, Debug, S, Actions, TransOpts,
-  Time) ->
-    case classify_timeout(timeout, Time, []) of
-        relative ->
+loop_actions_timeout(
+  P, Debug, S, Q, NextState_NewData,
+  NextEventsR, Hibernate, TimeoutsR, Postpone,
+  CallEnter, StateCall, Actions, Time) ->
+    %%
+    if
+        ?relative_timeout(Time) ->
             RelativeTimeout = {timeout,Time,Time},
-            parse_actions_timeout_add(
-              StateCall, Debug, S, Actions,
-              TransOpts, RelativeTimeout);
-        badarg ->
-            [error,
-             {bad_action_from_state_function,Time},
-             ?STACKTRACE(),
-             Debug]
+            loop_actions_list(
+              P, Debug, S, Q, NextState_NewData,
+              NextEventsR, Hibernate,
+              [RelativeTimeout|TimeoutsR], Postpone,
+              CallEnter, StateCall, Actions);
+        true ->
+            terminate(
+              error,
+              {bad_action_from_state_function,Time},
+              ?STACKTRACE(), P, Debug,
+              S#state{
+                state_data = NextState_NewData,
+                hibernate = Hibernate},
+              Q)
     end.
 
-parse_actions_timeout_add(
-  StateCall, Debug, S, Actions,
-  #trans_opts{timeouts_r = TimeoutsR} = TransOpts, Timeout) ->
-    parse_actions(
-      StateCall, Debug, S, Actions,
-      TransOpts#trans_opts{timeouts_r = [Timeout|TimeoutsR]}).
-
 %% Do the state transition
-loop_event_done(
-  Parent, ?not_sys_debug,
-  #state{postponed = P} = S,
-  Events, Event, NextState, NewData,
-  #trans_opts{
-     postpone = Postpone, hibernate = Hibernate,
-     timeouts_r = [], next_events_r = []}) ->
-    %%
-    %% Optimize the simple cases
-    %% i.e no timer changes, no inserted events and no debug,
-    %% by duplicate stripped down code
-    %%
-    %% Fast path
-    %%
-    case Postpone of
-        true ->
-            loop_event_done_fast(
-              Parent, Hibernate,
-              S,
-              Events, [Event|P], NextState, NewData);
-        false ->
-            loop_event_done_fast(
-              Parent, Hibernate,
-              S,
-              Events, P, NextState, NewData)
-    end;
-loop_event_done(
-  Parent, Debug_0,
-  #state{
-     state = State, postponed = P_0,
-     timer_refs = TimerRefs_0, timer_types = TimerTypes_0,
-     cancel_timers = CancelTimers_0} = S,
-  Events_0, Event_0, NextState, NewData,
-  #trans_opts{
-     hibernate = Hibernate, timeouts_r = TimeoutsR,
-     postpone = Postpone, next_events_r = NextEventsR}) ->
+%%
+loop_state_transition(
+  P, Debug, #state{state_data = {State,_Data}, postponed = Postponed} = S,
+  [Event|Events], {NextState,_NewData} = NextState_NewData,
+  NextEventsR, Hibernate, TimeoutsR, Postpone) ->
     %%
     %% All options have been collected and next_events are buffered.
     %% Do the actual state transition.
     %%
-    %% Full feature path
-    %%
-    [Debug_1|P_1] = % Move current event to postponed if Postpone
+    Postponed_1 = % Move current event to postponed if Postpone
 	case Postpone of
 	    true ->
-		[?sys_debug(
-                    Debug_0,
-                    {S#state.name,State},
-                    {postpone,Event_0,NextState}),
-		 Event_0|P_0];
+                [Event|Postponed];
 	    false ->
-		[?sys_debug(
-                    Debug_0,
-                    {S#state.name,State},
-                    {consume,Event_0,NextState})|P_0]
-	end,
-    {Events_2,P_2,Timers_2} =
-	%% Move all postponed events to queue,
-        %% cancel the event timer,
-        %% and cancel the state timeout if the state changes
-	if
-	    NextState =:= State ->
-		{Events_0,P_1,
-                 cancel_timer_by_type(
-                   timeout, {TimerTypes_0,CancelTimers_0})};
-	    true ->
-		{lists:reverse(P_1, Events_0),
-		 [],
-		 cancel_timer_by_type(
-		   state_timeout,
-                   cancel_timer_by_type(
-                     timeout, {TimerTypes_0,CancelTimers_0}))}
-		    %% The state timer is removed from TimerTypes
-		    %% but remains in TimerRefs until we get
-		    %% the cancel_timer msg
+                Postponed
 	end,
-    {TimerRefs_3,{TimerTypes_3,CancelTimers_3},TimeoutEvents} =
-	%% Stop and start timers
-	parse_timers(TimerRefs_0, Timers_2, TimeoutsR),
-    %% Place next events last in reversed queue
-    Events_3R = lists:reverse(Events_2, NextEventsR),
-    %% Enqueue immediate timeout events
-    Events_4R =	prepend_timeout_events(TimeoutEvents, Events_3R),
-    loop_event_done(
-      Parent, Debug_1,
-      S#state{
-        state = NextState,
-        data = NewData,
-        postponed = P_2,
-        timer_refs = TimerRefs_3,
-        timer_types = TimerTypes_3,
-        cancel_timers = CancelTimers_3,
-        hibernate = Hibernate},
-      lists:reverse(Events_4R)).
-
-%% Fast path
-%%
-loop_event_done_fast(
-  Parent, Hibernate,
-  #state{
-     state = NextState,
-     timer_types = #{timeout := _} = TimerTypes,
-     cancel_timers = CancelTimers} = S,
-  Events, P, NextState, NewData) ->
-    %%
-    %% Same state, event timeout active
-    %%
-    loop_event_done_fast(
-      Parent, Hibernate, S,
-      Events, P, NextState, NewData,
-      cancel_timer_by_type(
-        timeout, {TimerTypes,CancelTimers}));
-loop_event_done_fast(
-  Parent, Hibernate,
-  #state{state = NextState} = S,
-  Events, P, NextState, NewData) ->
-    %%
-    %% Same state
+    case Debug of
+        ?not_sys_debug ->
+	    %% Optimization for no sys_debug
+	    %% - avoid calling sys_debug/3
+	    if
+		NextState =:= State ->
+		    loop_keep_state(
+                      P, Debug, S,
+                      Events, NextState_NewData,
+                      NextEventsR, Hibernate, TimeoutsR, Postponed_1);
+		true ->
+		    loop_state_change(
+                      P, Debug, S,
+                      Events, NextState_NewData,
+                      NextEventsR, Hibernate, TimeoutsR, Postponed_1)
+	    end;
+        _ ->
+            %% With sys_debug
+            Name = P#params.name,
+	    Debug_1 =
+		case Postpone of
+		    true ->
+			sys_debug(
+			   Debug, Name,
+			   {postpone,Event,State,NextState});
+		    false ->
+			sys_debug(
+			   Debug, Name,
+			   {consume,Event,State,NextState})
+		end,
+	    if
+		NextState =:= State ->
+		    loop_keep_state(
+                      P, Debug_1, S,
+                      Events, NextState_NewData,
+                      NextEventsR, Hibernate, TimeoutsR, Postponed_1);
+		true ->
+		    loop_state_change(
+                      P, Debug_1, S,
+                      Events, NextState_NewData,
+                      NextEventsR, Hibernate, TimeoutsR, Postponed_1)
+	    end
+    end.
+
+%% State transition to the same state
+%%
+loop_keep_state(
+  P, Debug, #state{timers = {TimerRefs,TimeoutTypes} = Timers} = S,
+  Events, NextState_NewData,
+  NextEventsR, Hibernate, TimeoutsR, Postponed) ->
     %%
-    loop_event_done(
-      Parent, ?not_sys_debug,
-      S#state{
-        data = NewData,
-        postponed = P,
-        hibernate = Hibernate},
-      Events);
-loop_event_done_fast(
-  Parent, Hibernate,
-  #state{
-     timer_types = #{timeout := _} = TimerTypes,
-     cancel_timers = CancelTimers} = S,
-  Events, P, NextState, NewData) ->
+    %% Cancel event timeout
     %%
-    %% State change, event timeout active
+    case TimeoutTypes of
+	%% Optimization
+	%% - only cancel timer when there is a timer to cancel
+	#{timeout := TimerRef} ->
+	    %% Event timeout active
+	    loop_next_events(
+              P, Debug, S,
+              Events, NextState_NewData,
+              NextEventsR, Hibernate, TimeoutsR, Postponed,
+	      cancel_timer_by_ref_and_type(
+                TimerRef, timeout, TimerRefs, TimeoutTypes));
+	_ ->
+	    %% No event timeout active
+	    loop_next_events(
+              P, Debug, S,
+              Events, NextState_NewData,
+              NextEventsR, Hibernate, TimeoutsR, Postponed,
+              Timers)
+    end.
+
+%% State transition to a different state
+%%
+loop_state_change(
+  P, Debug, S, Events, NextState_NewData,
+  NextEventsR, Hibernate, TimeoutsR, Postponed) ->
     %%
-    loop_event_done_fast(
-      Parent, Hibernate, S,
-      lists:reverse(P, Events), [], NextState, NewData,
-        cancel_timer_by_type(
-          state_timeout,
-          cancel_timer_by_type(
-            timeout, {TimerTypes,CancelTimers})));
-loop_event_done_fast(
-  Parent, Hibernate,
-  #state{
-     timer_types = #{state_timeout := _} = TimerTypes,
-     cancel_timers = CancelTimers} = S,
-  Events, P, NextState, NewData) ->
+    %% Retry postponed events
     %%
-    %% State change, state timeout active
+    case Postponed of
+        [] ->
+            loop_state_change(
+              P, Debug, S,
+              Events, NextState_NewData,
+              NextEventsR, Hibernate, TimeoutsR);
+        [E1] ->
+            loop_state_change(
+              P, Debug, S,
+              [E1|Events], NextState_NewData,
+              NextEventsR, Hibernate, TimeoutsR);
+        [E2,E1] ->
+            loop_state_change(
+              P, Debug, S,
+              [E1,E2|Events], NextState_NewData,
+              NextEventsR, Hibernate, TimeoutsR);
+        _ ->
+            loop_state_change(
+              P, Debug, S,
+              lists:reverse(Postponed, Events), NextState_NewData,
+              NextEventsR, Hibernate, TimeoutsR)
+    end.
+%%
+loop_state_change(
+  P, Debug, #state{timers = {TimerRefs,TimeoutTypes} = Timers} = S,
+  Events, NextState_NewData,
+  NextEventsR, Hibernate, TimeoutsR) ->
     %%
-    loop_event_done_fast(
-      Parent, Hibernate, S,
-      lists:reverse(P, Events), [], NextState, NewData,
-        cancel_timer_by_type(
-          state_timeout,
-          cancel_timer_by_type(
-            timeout, {TimerTypes,CancelTimers})));
-loop_event_done_fast(
-  Parent, Hibernate,
-  #state{} = S,
-  Events, P, NextState, NewData) ->
+    %% Cancel state and event timeout
     %%
-    %% State change, no timeout to automatically cancel
+    case TimeoutTypes of
+	%% Optimization
+	%% - only cancel timeout when there is an active timeout
+	%%
+	#{state_timeout := TimerRef} ->
+	    %% State timeout active
+            %% - cancel event timeout too since it is faster than inspecting
+	    loop_next_events(
+              P, Debug, S, Events, NextState_NewData,
+              NextEventsR, Hibernate, TimeoutsR, [],
+              cancel_timer_by_type(
+                timeout,
+                cancel_timer_by_ref_and_type(
+                  TimerRef, state_timeout, TimerRefs, TimeoutTypes)));
+        #{timeout := TimerRef} ->
+            %% Event timeout active but not state timeout
+            %% - cancel event timeout only
+            loop_next_events(
+              P, Debug, S, Events, NextState_NewData,
+              NextEventsR, Hibernate, TimeoutsR, [],
+              cancel_timer_by_ref_and_type(
+                TimerRef, timeout, TimerRefs, TimeoutTypes));
+        _ ->
+            %% No state nor event timeout active.
+            loop_next_events(
+              P, Debug, S, Events, NextState_NewData,
+              NextEventsR, Hibernate, TimeoutsR, [],
+              Timers)
+    end.
+
+%% Continue state transition with processing of
+%% inserted events and timeout events
+%%
+loop_next_events(
+  P, Debug, S,
+  Events, NextState_NewData,
+  NextEventsR, Hibernate, [], Postponed,
+  Timers) ->
     %%
-    loop_event_done(
-      Parent, ?not_sys_debug,
+    %% Optimization when there are no timeout actions
+    %% hence no timeout zero events to append to Events
+    %% - avoid loop_timeouts
+    loop_done(
+      P, Debug,
       S#state{
-        state = NextState,
-        data = NewData,
-        postponed = [],
-        hibernate = Hibernate},
-      lists:reverse(P, Events)).
-%%
-%% Fast path
-%%
-loop_event_done_fast(
-  Parent, Hibernate, S,
-  Events, P, NextState, NewData,
-  {TimerTypes,CancelTimers}) ->
+        state_data = NextState_NewData,
+	postponed = Postponed,
+        timers = Timers,
+	hibernate = Hibernate},
+      NextEventsR, Events);
+loop_next_events(
+  P, Debug, S,
+  Events, NextState_NewData,
+  NextEventsR, Hibernate, TimeoutsR, Postponed,
+  Timers) ->
     %%
-    loop_event_done(
-      Parent, ?not_sys_debug,
-      S#state{
-        state = NextState,
-        data = NewData,
-        postponed = P,
-        timer_types = TimerTypes,
-        cancel_timers = CancelTimers,
-        hibernate = Hibernate},
-      Events).
-
-loop_event_done(Parent, Debug, S, Q) ->
-    case Q of
+    Seen = #{},
+    TimeoutEvents = [],
+    loop_timeouts(
+      P, Debug, S,
+      Events, NextState_NewData,
+      NextEventsR, Hibernate, TimeoutsR, Postponed,
+      Timers, Seen, TimeoutEvents).
+
+%% Continue state transition with processing of timeout events
+%%
+loop_timeouts(
+  P, Debug, S,
+  Events, NextState_NewData,
+  NextEventsR, Hibernate, [], Postponed,
+  Timers, _Seen, TimeoutEvents) ->
+    %%
+    S_1 =
+        S#state{
+          state_data = NextState_NewData,
+          postponed = Postponed,
+          timers = Timers,
+          hibernate = Hibernate},
+    case TimeoutEvents of
         [] ->
-            %% Get a new event
-            loop(Parent, Debug, S);
-        [{Type,Content}|Events] ->
-	    %% Loop until out of enqueued events
-	    loop_event(Parent, Debug, S, Events, Type, Content)
+            loop_done(P, Debug, S_1, NextEventsR, Events);
+        _ ->
+            case Events of
+                [] ->
+                    loop_prepend_timeout_events(
+                      P, Debug, S_1, TimeoutEvents,
+                      NextEventsR);
+                [E1] ->
+                    loop_prepend_timeout_events(
+                      P, Debug, S_1, TimeoutEvents,
+                      [E1|NextEventsR]);
+                [E2,E1] ->
+                    loop_prepend_timeout_events(
+                      P, Debug, S_1, TimeoutEvents,
+                      [E1,E2|NextEventsR]);
+                _ ->
+                    loop_prepend_timeout_events(
+                      P, Debug, S_1, TimeoutEvents,
+                      lists:reverse(Events, NextEventsR))
+            end
+    end;
+loop_timeouts(
+  P, Debug, S,
+  Events, NextState_NewData,
+  NextEventsR, Hibernate, [Timeout|TimeoutsR], Postponed,
+  Timers, Seen, TimeoutEvents) ->
+    %%
+    case Timeout of
+        {TimeoutType,Time,TimeoutMsg} ->
+            %% Relative timeout
+            case Seen of
+                #{TimeoutType := _} ->
+                    %% Type seen before - ignore
+                    loop_timeouts(
+                      P, Debug, S,
+                      Events, NextState_NewData,
+                      NextEventsR, Hibernate, TimeoutsR, Postponed,
+                      Timers, Seen, TimeoutEvents);
+                #{} ->
+                    loop_timeouts(
+                      P, Debug, S,
+                      Events, NextState_NewData,
+                      NextEventsR, Hibernate, TimeoutsR, Postponed,
+                      Timers, Seen, TimeoutEvents,
+                      TimeoutType, Time, TimeoutMsg, [])
+            end;
+        {TimeoutType,Time,TimeoutMsg,TimeoutOpts} ->
+            %% Absolute timeout
+            case Seen of
+                #{TimeoutType := _} ->
+                    %% Type seen before - ignore
+                    loop_timeouts(
+                      P, Debug, S,
+                      Events, NextState_NewData,
+                      NextEventsR, Hibernate, TimeoutsR, Postponed,
+                      Timers, Seen, TimeoutEvents);
+                #{} ->
+                    loop_timeouts(
+                      P, Debug, S,
+                      Events, NextState_NewData,
+                      NextEventsR, Hibernate, TimeoutsR, Postponed,
+                      Timers, Seen, TimeoutEvents,
+                      TimeoutType, Time, TimeoutMsg, listify(TimeoutOpts))
+            end
     end.
-
-
-%%---------------------------------------------------------------------------
-%% Server loop helpers
-
-call_callback_mode(#state{module = Module} = S) ->
-    try Module:callback_mode() of
-	CallbackMode ->
-	    callback_mode_result(S, CallbackMode)
-    catch
-	CallbackMode ->
-	    callback_mode_result(S, CallbackMode);
-	Class:Reason:Stacktrace ->
-	    [Class,Reason,Stacktrace]
+%%
+loop_timeouts(
+  P, Debug, S,
+  Events, NextState_NewData,
+  NextEventsR, Hibernate, TimeoutsR, Postponed,
+  Timers, Seen, TimeoutEvents,
+  TimeoutType, Time, TimeoutMsg, TimeoutOpts) ->
+    %%
+    case Time of
+        infinity ->
+            %% Cancel any running timer
+            loop_timeouts_cancel(
+              P, Debug, S,
+              Events, NextState_NewData,
+              NextEventsR, Hibernate, TimeoutsR, Postponed,
+              Timers, Seen, TimeoutEvents,
+              TimeoutType);
+        0 when TimeoutOpts =:= [] ->
+            %% Relative timeout zero
+            %% - cancel any running timer
+            %%   handle timeout zero events later
+            %%
+            loop_timeouts_cancel(
+              P, Debug, S,
+              Events, NextState_NewData,
+              NextEventsR, Hibernate, TimeoutsR, Postponed,
+              Timers, Seen, [{TimeoutType,TimeoutMsg}|TimeoutEvents],
+              TimeoutType);
+        _ ->
+            %% (Re)start the timer
+            TimerRef =
+                erlang:start_timer(Time, self(), TimeoutMsg, TimeoutOpts),
+            {TimerRefs,TimeoutTypes} = Timers,
+            case TimeoutTypes of
+                #{TimeoutType := OldTimerRef} ->
+                    %% Cancel the running timer,
+                    %% update the timeout type,
+                    %% insert the new timer ref,
+                    %% and remove the old timer ref
+                    Timers_1 =
+                        {maps:remove(
+                           OldTimerRef,
+                           TimerRefs#{TimerRef => TimeoutType}),
+                         TimeoutTypes#{TimeoutType := TimerRef}},
+                    cancel_timer(OldTimerRef),
+                    loop_timeouts(
+                      P, Debug, S,
+                      Events, NextState_NewData,
+                      NextEventsR, Hibernate, TimeoutsR, Postponed,
+                      Timers_1, Seen#{TimeoutType => true}, TimeoutEvents);
+                #{} ->
+                    %% Insert the new timer type and ref
+                    Timers_1 =
+                        {TimerRefs#{TimerRef => TimeoutType},
+                         TimeoutTypes#{TimeoutType => TimerRef}},
+                    loop_timeouts(
+                      P, Debug, S,
+                      Events, NextState_NewData,
+                      NextEventsR, Hibernate, TimeoutsR, Postponed,
+                      Timers_1, Seen#{TimeoutType => true}, TimeoutEvents)
+            end
     end.
 
-callback_mode_result(S, CallbackMode) ->
-    callback_mode_result(
-      S, CallbackMode, listify(CallbackMode), undefined, false).
-%%
-callback_mode_result(_S, CallbackMode, [], undefined, _StateEnter) ->
-    [error,
-     {bad_return_from_callback_mode,CallbackMode},
-     ?STACKTRACE()];
-callback_mode_result(S, _CallbackMode, [], CBMode, StateEnter) ->
-    S#state{callback_mode = CBMode, state_enter = StateEnter};
-callback_mode_result(S, CallbackMode, [H|T], CBMode, StateEnter) ->
-    case callback_mode(H) of
-	true ->
-            callback_mode_result(S, CallbackMode, T, H, StateEnter);
-	false ->
-	    case state_enter(H) of
-		true ->
-                    callback_mode_result(S, CallbackMode, T, CBMode, true);
-		false ->
-                    [error,
-                     {bad_return_from_callback_mode,CallbackMode},
-                     ?STACKTRACE()]
-	    end
+%% Loop helper to cancel a timeout
+%%
+loop_timeouts_cancel(
+  P, Debug, S,
+  Events, NextState_NewData,
+  NextEventsR, Hibernate, TimeoutsR, Postponed,
+  {TimerRefs,TimeoutTypes} = Timers, Seen, TimeoutEvents,
+  TimeoutType) ->
+    %% This function body should have been:
+    %%    Timers_1 = cancel_timer_by_type(TimeoutType, Timers),
+    %%    loop_timeouts(
+    %%      P, Debug, S,
+    %%      Events, NextState_NewData,
+    %%      NextEventsR, Hibernate, TimeoutsR, Postponed,
+    %%      Timers_1, Seen#{TimeoutType => true}, TimeoutEvents).
+    %%
+    %% Explicitly separate cases to get separate code paths for when
+    %% the map key exists vs. not, since otherwise the external call
+    %% to erlang:cancel_timer/1 and to map:remove/2 within
+    %% cancel_timer_by_type/2 would cause all live registers
+    %% to be saved to and restored from the stack also for
+    %% the case when the map key TimeoutType does not exist
+    case TimeoutTypes of
+        #{TimeoutType := TimerRef} ->
+            Timers_1 =
+                cancel_timer_by_ref_and_type(
+                  TimerRef, TimeoutType, TimerRefs, TimeoutTypes),
+            loop_timeouts(
+              P, Debug, S,
+              Events, NextState_NewData,
+              NextEventsR, Hibernate, TimeoutsR, Postponed,
+              Timers_1, Seen#{TimeoutType => true}, TimeoutEvents);
+        #{} ->
+            loop_timeouts(
+              P, Debug, S,
+              Events, NextState_NewData,
+              NextEventsR, Hibernate, TimeoutsR, Postponed,
+              Timers, Seen#{TimeoutType => true}, TimeoutEvents)
     end.
 
+%% Continue state transition with prepending timeout zero events
+%% before event queue reversal i.e appending timeout zero events
+%%
+loop_prepend_timeout_events(P, Debug, S, TimeoutEvents, EventsR) ->
+    {Debug_1,Events_1R} =
+        prepend_timeout_events(P, Debug, S, TimeoutEvents, EventsR),
+    loop_done(P, Debug_1, S, Events_1R, []).
 
-call_state_function(
-  #state{callback_mode = undefined} = S, Type, Content, State, Data) ->
-    case call_callback_mode(S) of
-	#state{} = NewS ->
-	    call_state_function(NewS, Type, Content, State, Data);
-	Error ->
-	    Error
-    end;
-call_state_function(
-  #state{callback_mode = CallbackMode, module = Module} = S,
-  Type, Content, State, Data) ->
-    try
-	case CallbackMode of
-	    state_functions ->
-		Module:State(Type, Content, Data);
-	    handle_event_function ->
-		Module:handle_event(Type, Content, State, Data)
-	end
-    of
-	Result ->
-	    {Result,S}
-    catch
-	Result ->
-	    {Result,S};
-	Class:Reason:Stacktrace ->
-	    [Class,Reason,Stacktrace]
+%% Place inserted events first in the event queue
+%%
+loop_done(P, Debug, S, NextEventsR, Events) ->
+    case NextEventsR of
+        [] ->
+            loop_done(P, Debug, S, Events);
+        [E1] ->
+            loop_done(P, Debug, S, [E1|Events]);
+        [E2,E1] ->
+            loop_done(P, Debug, S, [E1,E2|Events]);
+        _ ->
+            loop_done(P, Debug, S, lists:reverse(NextEventsR, Events))
     end.
-
-
-%% -> absolute | relative | badarg
-classify_timeout(TimeoutType, Time, Opts) ->
-    case timeout_event_type(TimeoutType) of
-        true ->
-            classify_time(false, Time, Opts);
-        false ->
-            badarg
+%%
+%% State transition is done, keep looping if there are
+%% enqueued events, otherwise get a new event
+%%
+loop_done(P, Debug, S, Q) ->
+%%%    io:format(
+%%%      "loop_done: state_data = ~p,~n"
+%%%      "    postponed = ~p, Q = ~p,~n",
+%%%      "    timers = ~p.~n"
+%%%      [S#state.state_data,,S#state.postponed,Q,S#state.timers]),
+    case Q of
+        [] ->
+            %% Get a new event
+            loop(P, Debug, S);
+        [Event|Events] ->
+	    %% Loop until out of enqueued events
+	    loop_event(P, Debug, S, Event, Events)
     end.
 
-classify_time(Abs, Time, []) ->
-    case Abs of
-        true when
-              is_integer(Time);
-              Time =:= infinity ->
-            absolute;
-        false when
-              is_integer(Time), 0 =< Time;
-              Time =:= infinity ->
-            relative;
-        _ ->
-            badarg
-    end;
-classify_time(_, Time, [{abs,Abs}|Opts]) when is_boolean(Abs) ->
-    classify_time(Abs, Time, Opts);
-classify_time(_, _, Opts) when is_list(Opts) ->
-    badarg.
+%%---------------------------------------------------------------------------
+%% Server loop helpers
 
-%% Stop and start timers as well as create timeout zero events
-%% and pending event timer
+%% Parse an option list for erlang:start_timer/4 to figure out
+%% if the timeout will be absolute or relative
 %%
-%% Stop and start timers non-event timers
-parse_timers(TimerRefs, Timers, TimeoutsR) ->
-    parse_timers(TimerRefs, Timers, TimeoutsR, #{}, []).
+parse_timeout_opts_abs(Opts) ->
+    parse_timeout_opts_abs(Opts, false).
 %%
-parse_timers(
-  TimerRefs, Timers, [], _Seen, TimeoutEvents) ->
-    %%
-    {TimerRefs,Timers,TimeoutEvents};
-parse_timers(
-  TimerRefs, Timers, [Timeout|TimeoutsR], Seen, TimeoutEvents) ->
-    %%
-    case Timeout of
-	{TimerType,Time,TimerMsg,TimerOpts} ->
-	    %% Absolute timer
-	    parse_timers(
-	      TimerRefs, Timers, TimeoutsR, Seen, TimeoutEvents,
-	      TimerType, Time, TimerMsg, listify(TimerOpts));
-	%% Relative timers below
-	{TimerType,0,TimerMsg} ->
-	    parse_timers(
-	      TimerRefs, Timers, TimeoutsR, Seen, TimeoutEvents,
-	      TimerType, zero, TimerMsg, []);
-	{TimerType,Time,TimerMsg} ->
-	    parse_timers(
-	      TimerRefs, Timers, TimeoutsR, Seen, TimeoutEvents,
-	      TimerType, Time, TimerMsg, [])
-    end.
-
-parse_timers(
-  TimerRefs, Timers, TimeoutsR, Seen, TimeoutEvents,
-  TimerType, Time, TimerMsg, TimerOpts) ->
-    case Seen of
-	#{TimerType := _} ->
-	    %% Type seen before - ignore
-	    parse_timers(
-              TimerRefs, Timers, TimeoutsR, Seen, TimeoutEvents);
-	#{} ->
-	    %% Unseen type - handle
-	    NewSeen = Seen#{TimerType => true},
-	    case Time of
-		infinity ->
-		    %% Cancel any running timer
-		    parse_timers(
-		      TimerRefs, cancel_timer_by_type(TimerType, Timers),
-                      TimeoutsR, NewSeen, TimeoutEvents);
-		zero ->
-		    %% Cancel any running timer
-		    %% Handle zero time timeouts later
-		    parse_timers(
-		      TimerRefs, cancel_timer_by_type(TimerType, Timers),
-                      TimeoutsR, NewSeen,
-                      [{TimerType,TimerMsg}|TimeoutEvents]);
-		_ ->
-		    %% (Re)start the timer
-		    TimerRef =
-			erlang:start_timer(
-			  Time, self(), TimerMsg, TimerOpts),
-		    case Timers of
-			{#{TimerType := OldTimerRef} = TimerTypes,
-                         CancelTimers} ->
-			    %% Cancel the running timer
-			    cancel_timer(OldTimerRef),
-			    NewCancelTimers = CancelTimers + 1,
-			    %% Insert the new timer into
-			    %% both TimerRefs and TimerTypes
-			    parse_timers(
-			      TimerRefs#{TimerRef => TimerType},
-			      {TimerTypes#{TimerType => TimerRef},
-                               NewCancelTimers},
-                              TimeoutsR, NewSeen, TimeoutEvents);
-			{#{} = TimerTypes,CancelTimers} ->
-			    %% Insert the new timer into
-			    %% both TimerRefs and TimerTypes
-			    parse_timers(
-			      TimerRefs#{TimerRef => TimerType},
-			      {TimerTypes#{TimerType => TimerRef},
-                               CancelTimers},
-                              TimeoutsR, NewSeen, TimeoutEvents)
-		    end
-	    end
+parse_timeout_opts_abs(Opts, Abs) ->
+    case Opts of
+        [] ->
+            Abs;
+        [{abs,Abs_1}|Opts] when is_boolean(Abs_1) ->
+            parse_timeout_opts_abs(Opts, Abs_1);
+        _ ->
+            badarg
     end.
 
 %% Enqueue immediate timeout events (timeout 0 events)
@@ -1791,62 +2061,94 @@ parse_timers(
 %% so if there are enqueued events before the event timer
 %% timeout 0 event - the event timer is cancelled hence no event.
 %%
-%% Other (state_timeout) timeout 0 events that are after
-%% the event timer timeout 0 events are considered to
+%% Other (state_timeout and {timeout,Name}) timeout 0 events
+%% that are after an event timer timeout 0 event are considered to
 %% belong to timers that were started after the event timer
 %% timeout 0 event fired, so they do not cancel the event timer.
 %%
-prepend_timeout_events([], EventsR) ->
-    EventsR;
-prepend_timeout_events([{timeout,_} = TimeoutEvent|TimeoutEvents], []) ->
-    prepend_timeout_events(TimeoutEvents, [TimeoutEvent]);
-prepend_timeout_events([{timeout,_}|TimeoutEvents], EventsR) ->
+prepend_timeout_events(_P, Debug, _S, [], EventsR) ->
+    {Debug,EventsR};
+prepend_timeout_events(
+  P, Debug, S, [{timeout,_} = TimeoutEvent|TimeoutEvents], []) ->
+    %% Prepend this since there are no other events in queue
+    case Debug of
+        ?not_sys_debug ->
+            prepend_timeout_events(
+              P, Debug, S, TimeoutEvents, [TimeoutEvent]);
+        _ ->
+            {State,_Data} = S#state.state_data,
+            Debug_1 =
+              sys_debug(
+                Debug, P#params.name, {in,TimeoutEvent,State}),
+            prepend_timeout_events(
+              P, Debug_1, S, TimeoutEvents, [TimeoutEvent])
+    end;
+prepend_timeout_events(
+  P, Debug, S, [{timeout,_}|TimeoutEvents], EventsR) ->
     %% Ignore since there are other events in queue
     %% so they have cancelled the event timeout 0.
-    prepend_timeout_events(TimeoutEvents, EventsR);
-prepend_timeout_events([TimeoutEvent|TimeoutEvents], EventsR) ->
+    prepend_timeout_events(P, Debug, S, TimeoutEvents, EventsR);
+prepend_timeout_events(
+  P, Debug, S, [TimeoutEvent|TimeoutEvents], EventsR) ->
     %% Just prepend all others
-    prepend_timeout_events(TimeoutEvents, [TimeoutEvent|EventsR]).
+    case Debug of
+        ?not_sys_debug ->
+            prepend_timeout_events(
+              P, Debug, S, TimeoutEvents, [TimeoutEvent|EventsR]);
+        _ ->
+            {State,_Data} = S#state.state_data,
+            Debug_1 =
+                sys_debug(
+                  Debug, P#params.name, {in,TimeoutEvent,State}),
+            prepend_timeout_events(
+              P, Debug_1, S, TimeoutEvents, [TimeoutEvent|EventsR])
+    end.
 
 
 
 %%---------------------------------------------------------------------------
 %% Server helpers
 
-reply_then_terminate(Class, Reason, Stacktrace, Debug, S, Q, Replies) ->
+reply_then_terminate(Class, Reason, Stacktrace, P, Debug, S, Q, Replies) ->
     do_reply_then_terminate(
-      Class, Reason, Stacktrace, Debug, S, Q, listify(Replies)).
+      Class, Reason, Stacktrace, P, Debug, S, Q, listify(Replies)).
 %%
 do_reply_then_terminate(
-  Class, Reason, Stacktrace, Debug, S, Q, []) ->
-    terminate(Class, Reason, Stacktrace, Debug, S, Q);
+  Class, Reason, Stacktrace, P, Debug, S, Q, []) ->
+    terminate(Class, Reason, Stacktrace, P, Debug, S, Q);
 do_reply_then_terminate(
-  Class, Reason, Stacktrace, Debug, S, Q, [R|Rs]) ->
+  Class, Reason, Stacktrace, P, Debug, S, Q, [R|Rs]) ->
     case R of
-	{reply,{_To,_Tag}=From,Reply} ->
-            reply(From, Reply),
-            NewDebug =
-                ?sys_debug(
-                   Debug,
-                   begin
-                       #state{name = Name, state = State} = S,
-                       {Name,State}
-                   end,
-                   {out,Reply,From}),
-	    do_reply_then_terminate(
-	      Class, Reason, Stacktrace, NewDebug, S, Q, Rs);
+        {reply,From,Reply} ->
+            case from(From) of
+                true ->
+                    reply(From, Reply),
+                    Debug_1 =
+                        ?sys_debug(
+                           Debug,
+                           P#params.name,
+                           {out,Reply,From}),
+                    do_reply_then_terminate(
+                      Class, Reason, Stacktrace, P, Debug_1, S, Q, Rs);
+                false ->
+                    terminate(
+                      error,
+                      {bad_reply_action_from_state_function,R},
+                      ?STACKTRACE(),
+                      P, Debug, S, Q)
+            end;
 	_ ->
 	    terminate(
 	      error,
 	      {bad_reply_action_from_state_function,R},
 	      ?STACKTRACE(),
-	      Debug, S, Q)
+	      P, Debug, S, Q)
     end.
 
 terminate(
-  Class, Reason, Stacktrace, Debug,
-  #state{module = Module, state = State, data = Data} = S,
-  Q) ->
+  Class, Reason, Stacktrace,
+  #params{module = Module} = P, Debug,
+  #state{state_data = {State,Data}} = S, Q) ->
     case erlang:function_exported(Module, terminate, 3) of
 	true ->
 	    try Module:terminate(Reason, State, Data) of
@@ -1854,8 +2156,7 @@ terminate(
 	    catch
 		_ -> ok;
 		C:R:ST ->
-		    error_info(C, R, ST, S, Q),
-		    sys:print_log(Debug),
+		    error_info(C, R, ST, Debug, P, S, Q),
 		    erlang:raise(C, R, ST)
 	    end;
 	false ->
@@ -1864,14 +2165,13 @@ terminate(
     _ =
 	case Reason of
 	    normal ->
-                terminate_sys_debug(Debug, S, State, Reason);
+                terminate_sys_debug(Debug, P, State, Reason);
 	    shutdown ->
-                terminate_sys_debug(Debug, S, State, Reason);
+                terminate_sys_debug(Debug, P, State, Reason);
 	    {shutdown,_} ->
-                terminate_sys_debug(Debug, S, State, Reason);
+                terminate_sys_debug(Debug, P, State, Reason);
 	    _ ->
-		error_info(Class, Reason, Stacktrace, S, Q),
-		sys:print_log(Debug)
+		error_info(Class, Reason, Stacktrace, Debug, P, S, Q)
 	end,
     case Stacktrace of
 	[] ->
@@ -1880,38 +2180,67 @@ terminate(
 	    erlang:raise(Class, Reason, Stacktrace)
     end.
 
-terminate_sys_debug(Debug, S, State, Reason) ->
-    ?sys_debug(Debug, {S#state.name,State}, {terminate,Reason}).
+terminate_sys_debug(Debug, P, State, Reason) ->
+    ?sys_debug(Debug, P#params.name, {terminate,Reason,State}).
 
 
 error_info(
-  Class, Reason, Stacktrace,
-  #state{
+  Class, Reason, Stacktrace, Debug,
+  #params{
      name = Name,
      callback_mode = CallbackMode,
-     state_enter = StateEnter,
-     postponed = P} = S,
+     state_enter = StateEnter} = P,
+  #state{postponed = Postponed} = S,
   Q) ->
+    Log = sys:get_log(Debug),
     ?LOG_ERROR(#{label=>{gen_statem,terminate},
                  name=>Name,
                  queue=>Q,
-                 postponed=>P,
+                 postponed=>Postponed,
                  callback_mode=>CallbackMode,
                  state_enter=>StateEnter,
-                 state=>format_status(terminate, get(), S),
-                 reason=>{Class,Reason,Stacktrace}},
+                 state=>format_status(terminate, get(), P, S),
+                 log=>Log,
+                 reason=>{Class,Reason,Stacktrace},
+                 client_info=>client_stacktrace(Q)},
                #{domain=>[otp],
                  report_cb=>fun gen_statem:format_log/1,
                  error_logger=>#{tag=>error}}).
 
+client_stacktrace([]) ->
+    undefined;
+client_stacktrace([{{call,{Pid,_Tag}},_Req}|_]) when is_pid(Pid) ->
+    if
+        node(Pid) =:= node() ->
+            case
+                process_info(Pid, [current_stacktrace, registered_name])
+            of
+                undefined ->
+                    {Pid,dead};
+                [{current_stacktrace, Stacktrace},
+                 {registered_name, []}] ->
+                    {Pid,{Pid,Stacktrace}};
+                [{current_stacktrace, Stacktrace},
+                 {registered_name, Name}] ->
+                    {Pid,{Name,Stacktrace}}
+            end;
+        true ->
+            {Pid,remote}
+    end;
+client_stacktrace([_|_]) ->
+    undefined.
+
+
 format_log(#{label:={gen_statem,terminate},
              name:=Name,
              queue:=Q,
-             postponed:=P,
+             postponed:=Postponed,
              callback_mode:=CallbackMode,
              state_enter:=StateEnter,
              state:=FmtData,
-             reason:={Class,Reason,Stacktrace}}) ->
+             log:=Log,
+             reason:={Class,Reason,Stacktrace},
+             client_info:=ClientInfo}) ->
     {FixedReason,FixedStacktrace} =
 	case Stacktrace of
 	    [{M,F,Args,_}|ST]
@@ -1931,14 +2260,12 @@ format_log(#{label:={gen_statem,terminate},
 			    true ->
 				{Reason,Stacktrace};
 			    false ->
-				{{'function not exported',{M,F,Arity}},
-				 ST}
+				{{'function not exported',{M,F,Arity}},ST}
 			end
 		end;
 	    _ -> {Reason,Stacktrace}
 	end,
-    [LimitedP, LimitedFmtData, LimitedFixedReason] =
-        [error_logger:limit_term(D) || D <- [P, FmtData, FixedReason]],
+    {ClientFmt,ClientArgs} = format_client_log(ClientInfo),
     CBMode =
 	 case StateEnter of
 	     true ->
@@ -1958,39 +2285,60 @@ format_log(#{label:={gen_statem,terminate},
              [_,_|_] -> "** Queued = ~tp~n";
              _ -> ""
          end ++
-         case P of
+         case Postponed of
              [] -> "";
              _ -> "** Postponed = ~tp~n"
          end ++
          case FixedStacktrace of
              [] -> "";
              _ -> "** Stacktrace =~n**  ~tp~n"
-         end,
+         end ++
+         case Log of
+             [] -> "";
+             _ -> "** Log =~n**  ~tp~n"
+         end ++ ClientFmt,
      [Name |
       case Q of
           [] -> [];
-          [Event|_] -> [Event]
+          [Event|_] -> [error_logger:limit_term(Event)]
       end] ++
-         [LimitedFmtData,
-          Class,LimitedFixedReason,
+         [error_logger:limit_term(FmtData),
+          Class,error_logger:limit_term(FixedReason),
           CBMode] ++
          case Q of
-             [_|[_|_] = Events] -> [Events];
+             [_|[_|_] = Events] -> [error_logger:limit_term(Events)];
              _ -> []
          end ++
-         case P of
+         case Postponed of
              [] -> [];
-             _ -> [LimitedP]
+             _ -> [error_logger:limit_term(Postponed)]
          end ++
          case FixedStacktrace of
              [] -> [];
-             _ -> [FixedStacktrace]
-         end}.
+             _ -> [error_logger:limit_term(FixedStacktrace)]
+         end ++
+         case Log of
+             [] -> [];
+             _ -> [[error_logger:limit_term(T) || T <- Log]]
+         end ++ ClientArgs}.
+
+format_client_log(undefined) ->
+    {"", []};
+format_client_log({Pid,dead}) ->
+    {"** Client ~p is dead~n", [Pid]};
+format_client_log({Pid,remote}) ->
+    {"** Client ~p is remote on node ~p~n", [Pid, node(Pid)]};
+format_client_log({_Pid,{Name,Stacktrace}}) ->
+    {"** Client ~tp stacktrace~n"
+     "** ~tp~n",
+     [Name, error_logger:limit_term(Stacktrace)]}.
+
 
 %% Call Module:format_status/2 or return a default value
 format_status(
   Opt, PDict,
-  #state{module = Module, state = State, data = Data}) ->
+  #params{module = Module},
+  #state{state_data = {State,Data} = State_Data}) ->
     case erlang:function_exported(Module, format_status, 2) of
 	true ->
 	    try Module:format_status(Opt, [PDict,State,Data])
@@ -1998,21 +2346,21 @@ format_status(
 		Result -> Result;
 		_:_ ->
 		    format_status_default(
-		      Opt, State,
-		      atom_to_list(Module) ++ ":format_status/2 crashed")
+		      Opt,
+                      {State,
+                       atom_to_list(Module) ++ ":format_status/2 crashed"})
 	    end;
 	false ->
-	    format_status_default(Opt, State, Data)
+	    format_status_default(Opt, State_Data)
     end.
 
-%% The default Module:format_status/2
-format_status_default(Opt, State, Data) ->
-    StateData = {State,Data},
+%% The default Module:format_status/3
+format_status_default(Opt, State_Data) ->
     case Opt of
 	terminate ->
-	    StateData;
+	    State_Data;
 	_ ->
-	    [{data,[{"State",StateData}]}]
+	    [{data,[{"State",State_Data}]}]
     end.
 
 -compile({inline, [listify/1]}).
@@ -2021,24 +2369,41 @@ listify(Item) when is_list(Item) ->
 listify(Item) ->
     [Item].
 
+
+-define(cancel_timer(TimerRef),
+    case erlang:cancel_timer(TimerRef) of
+        false ->
+            %% No timer found and we have not seen the timeout message
+            receive
+                {timeout,(TimerRef),_} ->
+                    ok
+            end;
+        _ ->
+            %% Timer was running
+            ok
+    end).
+
+-compile({inline, [cancel_timer/1]}).
+cancel_timer(TimerRef) ->
+    ?cancel_timer(TimerRef).
+
 %% Cancel timer if running, otherwise no op
 %%
-%% This is an asynchronous cancel so the timer is not really cancelled
-%% until we get a cancel_timer msg i.e {cancel_timer,TimerRef,_}.
-%% In the mean time we might get a timeout message.
-%%
-%% Remove the timer from TimerTypes.
-%% When we get the cancel_timer msg we remove it from TimerRefs.
+%% Remove the timer from Timers
 -compile({inline, [cancel_timer_by_type/2]}).
-cancel_timer_by_type(TimerType, {TimerTypes,CancelTimers} = TT_CT) ->
-    case TimerTypes of
-	#{TimerType := TimerRef} ->
-            ok = erlang:cancel_timer(TimerRef, [{async,true}]),
-	    {maps:remove(TimerType, TimerTypes),CancelTimers + 1};
-	#{} ->
-	    TT_CT
+cancel_timer_by_type(TimeoutType, {TimerRefs,TimeoutTypes} = Timers) ->
+    case TimeoutTypes of
+        #{TimeoutType := TimerRef} ->
+            ?cancel_timer(TimerRef),
+            {maps:remove(TimerRef, TimerRefs),
+             maps:remove(TimeoutType, TimeoutTypes)};
+        #{} ->
+            Timers
     end.
 
--compile({inline, [cancel_timer/1]}).
-cancel_timer(TimerRef) ->
-    ok = erlang:cancel_timer(TimerRef, [{async,true}]).
+-compile({inline, [cancel_timer_by_ref_and_type/4]}).
+cancel_timer_by_ref_and_type(
+  TimerRef, TimeoutType, TimerRefs, TimeoutTypes) ->
+    ?cancel_timer(TimerRef),
+    {maps:remove(TimerRef, TimerRefs),
+     maps:remove(TimeoutType, TimeoutTypes)}.
diff --git a/lib/stdlib/src/io_lib.erl b/lib/stdlib/src/io_lib.erl
index 8223a52873..2b5a374cf2 100644
--- a/lib/stdlib/src/io_lib.erl
+++ b/lib/stdlib/src/io_lib.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 1996-2018. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2019. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -87,6 +87,8 @@
 
 -export([limit_term/2]).
 
+-export([chars_length/1]).
+
 -export_type([chars/0, latin1_string/0, continuation/0,
               fread_error/0, fread_item/0, format_spec/0, chars_limit/0]).
 
@@ -1131,3 +1133,17 @@ test_limit_map_assoc(K, V, D) ->
     test_limit(V, D - 1).
 
 test_limit_bitstring(_, _) -> ok.
+
+-spec chars_length(chars()) -> non_neg_integer().
+%% Optimized for deep lists S such that deep_latin1_char_list(S) is
+%% true. No binaries allowed! It is assumed that $\r is never followed
+%% by $\n if S is an iolist() (string:length() assigns such a
+%% sub-sequence length 1).
+chars_length(S) ->
+    try
+        %% true = deep_latin1_char_list(S),
+        iolist_size(S)
+    catch
+        _:_ ->
+            string:length(S)
+    end.
diff --git a/lib/stdlib/src/io_lib_format.erl b/lib/stdlib/src/io_lib_format.erl
index ab9031573b..d1aa4cd157 100644
--- a/lib/stdlib/src/io_lib_format.erl
+++ b/lib/stdlib/src/io_lib_format.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1996-2018. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2019. All Rights Reserved.
 %% 
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -248,7 +248,7 @@ count_small([#{control_char := $s}|Cs], #{w := W} = Cnts) ->
     count_small(Cs, Cnts#{w := W + 1});
 count_small([S|Cs], #{other := Other} = Cnts) when is_list(S);
                                                    is_binary(S) ->
-    count_small(Cs, Cnts#{other := Other + string:length(S)});
+    count_small(Cs, Cnts#{other := Other + io_lib:chars_length(S)});
 count_small([C|Cs], #{other := Other} = Cnts) when is_integer(C) ->
     count_small(Cs, Cnts#{other := Other + 1});
 count_small([], #{p := P, s := S, w := W, other := Other}) ->
@@ -280,10 +280,15 @@ build_limited([#{control_char := C, args := As, width := F, adjust := Ad,
                    true -> MaxLen0 div Count0
                end,
     S = control_limited(C, As, F, Ad, P, Pad, Enc, Str, MaxChars, I),
-    Len = string:length(S),
     NumOfPs = decr_pc(C, NumOfPs0),
     Count = Count0 - 1,
-    MaxLen = sub(MaxLen0, Len),
+    MaxLen = if
+                 MaxLen0 < 0 -> % optimization
+                     MaxLen0;
+                 true ->
+                     Len = io_lib:chars_length(S),
+                     sub(MaxLen0, Len)
+             end,
     if
 	NumOfPs > 0 -> [S|build_limited(Cs, NumOfPs, Count,
                                         MaxLen, indentation(S, I))];
@@ -406,7 +411,7 @@ base(B) when is_integer(B) ->
 term(T, none, _Adj, none, _Pad) -> T;
 term(T, none, Adj, P, Pad) -> term(T, P, Adj, P, Pad);
 term(T, F, Adj, P0, Pad) ->
-    L = string:length(T),
+    L = io_lib:chars_length(T),
     P = erlang:min(L, case P0 of none -> F; _ -> min(P0, F) end),
     if
 	L > P ->
@@ -713,7 +718,7 @@ fwrite_g(Fl, F, Adj, P, Pad) when P >= 1 ->
     end.
 
 
-%% iolist_to_chars(iolist()) -> deep_char_list()
+%% iolist_to_chars(iolist()) -> io_lib:chars()
 
 iolist_to_chars([C|Cs]) when is_integer(C), C >= $\000, C =< $\377 ->
     [C | iolist_to_chars(Cs)];
@@ -729,7 +734,7 @@ iolist_to_chars(B) when is_binary(B) ->
 %%                                 cbinary() | nil())
 %% cbinary() :: unicode:unicode_binary() | unicode:latin1_binary()
 
-%% cdata_to_chars(cdata()) -> io_lib:deep_char_list()
+%% cdata_to_chars(cdata()) -> io_lib:chars()
 
 cdata_to_chars([C|Cs]) when is_integer(C), C >= $\000 ->
     [C | cdata_to_chars(Cs)];
@@ -745,7 +750,7 @@ cdata_to_chars(B) when is_binary(B) ->
 
 limit_string(S, F, CharsLimit) when CharsLimit < 0; CharsLimit >= F -> S;
 limit_string(S, _F, CharsLimit) ->
-    case string:length(S) =< CharsLimit of
+    case io_lib:chars_length(S) =< CharsLimit of
         true -> S;
         false -> [string:slice(S, 0, sub(CharsLimit, 3)), "..."]
     end.
@@ -759,11 +764,11 @@ limit_field(F, CharsLimit) ->
 
 string(S, none, _Adj, none, _Pad) -> S;
 string(S, F, Adj, none, Pad) ->
-    string_field(S, F, Adj, string:length(S), Pad);
+    string_field(S, F, Adj, io_lib:chars_length(S), Pad);
 string(S, none, _Adj, P, Pad) ->
-    string_field(S, P, left, string:length(S), Pad);
+    string_field(S, P, left, io_lib:chars_length(S), Pad);
 string(S, F, Adj, P, Pad) when F >= P ->
-    N = string:length(S),
+    N = io_lib:chars_length(S),
     if F > P ->
 	    if N > P ->
 		    adjust(flat_trunc(S, P), chars(Pad, F-P), Adj);
diff --git a/lib/stdlib/src/io_lib_pretty.erl b/lib/stdlib/src/io_lib_pretty.erl
index ba9d9e8434..8f2fd7ea8f 100644
--- a/lib/stdlib/src/io_lib_pretty.erl
+++ b/lib/stdlib/src/io_lib_pretty.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1996-2018. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2019. All Rights Reserved.
 %% 
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -507,20 +507,20 @@ print_length(#{}=M, _D, _T, _RF, _Enc, _Str) when map_size(M) =:= 0 ->
     {"#{}", 3, 0, no_more};
 print_length(Atom, _D, _T, _RF, Enc, _Str) when is_atom(Atom) ->
     S = write_atom(Atom, Enc),
-    {S, string:length(S), 0, no_more};
+    {S, io_lib:chars_length(S), 0, no_more};
 print_length(List, D, T, RF, Enc, Str) when is_list(List) ->
     %% only flat lists are "printable"
     case Str andalso printable_list(List, D, T, Enc) of
         true ->
             %% print as string, escaping double-quotes in the list
             S = write_string(List, Enc),
-            {S, string:length(S), 0, no_more};
+            {S, io_lib:chars_length(S), 0, no_more};
         {true, Prefix} ->
             %% Truncated lists when T < 0 could break some existing code.
             S = write_string(Prefix, Enc),
             %% NumOfDots = 0 to avoid looping--increasing the depth
             %% does not make Prefix longer.
-            {[S | "..."], 3 + string:length(S), 0, no_more};
+            {[S | "..."], 3 + io_lib:chars_length(S), 0, no_more};
         false ->
             case print_length_list(List, D, T, RF, Enc, Str) of
                 {What, Len, Dots, _More} when Dots > 0 ->
@@ -564,7 +564,7 @@ print_length(<<_/bitstring>> = Bin, D, T, RF, Enc, Str) ->
             {[$<,$<,S,$>,$>], 4 + length(S), 0, no_more};
         {false, List} when is_list(List) ->
             S = io_lib:write_string(List, $"), %"
-            {[$<,$<,S,"/utf8>>"], 9 + string:length(S), 0, no_more};
+            {[$<,$<,S,"/utf8>>"], 9 + io_lib:chars_length(S), 0, no_more};
         {true, true, Prefix} ->
             S = io_lib:write_string(Prefix, $"), %"
             More = fun(T1, Dd) ->
@@ -576,7 +576,7 @@ print_length(<<_/bitstring>> = Bin, D, T, RF, Enc, Str) ->
             More = fun(T1, Dd) ->
                            ?FUNCTION_NAME(Bin, D+Dd, T1, RF, Enc, Str)
                    end,
-            {[$<,$<,S|"/utf8...>>"], 12 + string:length(S), 3, More};
+            {[$<,$<,S|"/utf8...>>"], 12 + io_lib:chars_length(S), 3, More};
         false ->
             case io_lib:write_binary(Bin, D, T) of
                 {S, <<>>} ->
@@ -591,7 +591,7 @@ print_length(<<_/bitstring>> = Bin, D, T, RF, Enc, Str) ->
 print_length(Term, _D, _T, _RF, _Enc, _Str) ->
     S = io_lib:write(Term),
     %% S can contain unicode, so iolist_size(S) cannot be used here
-    {S, string:length(S), 0, no_more}.
+    {S, io_lib:chars_length(S), 0, no_more}.
 
 print_length_map(Map, 1, _T, RF, Enc, Str) ->
     More = fun(T1, Dd) -> ?FUNCTION_NAME(Map, 1+Dd, T1, RF, Enc, Str) end,
@@ -651,7 +651,7 @@ print_length_record(Tuple, 1, _T, RF, RDefs, Enc, Str) ->
     {"{...}", 5, 3, More};
 print_length_record(Tuple, D, T, RF, RDefs, Enc, Str) ->
     Name = [$# | write_atom(element(1, Tuple), Enc)],
-    NameL = string:length(Name),
+    NameL = io_lib:chars_length(Name),
     T1 = tsub(T, NameL+2),
     L = print_length_fields(RDefs, D - 1, T1, Tuple, 2, RF, Enc, Str),
     {Len, Dots} = list_length(L, NameL + 2, 0),
@@ -677,7 +677,7 @@ print_length_fields([Def | Defs], D, T, Tuple, I, RF, Enc, Str) ->
 
 print_length_field(Def, D, T, E, RF, Enc, Str) ->
     Name = write_atom(Def, Enc),
-    NameL = string:length(Name) + 3,
+    NameL = io_lib:chars_length(Name) + 3,
     {_, Len, Dots, _} =
         Field = print_length(E, D, tsub(T, NameL), RF, Enc, Str),
     {{field, Name, NameL, Field}, NameL + Len, Dots, no_more}.
@@ -721,7 +721,7 @@ printable_list(_L, 1, _T, _Enc) ->
 printable_list(L, _D, T, latin1) when T < 0 ->
     io_lib:printable_latin1_list(L);
 printable_list(L, _D, T, Enc) when T >= 0 ->
-    case slice(L, tsub(T, 2)) of
+    case slice(L, tsub(T, 2), Enc) of
         false ->
             false;
         {prefix, Prefix} when Enc =:= latin1 ->
@@ -737,20 +737,46 @@ printable_list(L, _D, T, Enc) when T >= 0 ->
 printable_list(L, _D, T, _Uni) when T < 0->
     io_lib:printable_list(L).
 
-slice(L, N) ->
-    try string:length(L) =< N of
-        true ->
+slice(L, N, latin1) ->
+    try lists:split(N, L) of
+        {_, []} ->
             all;
-        false ->
-            case string:slice(L, 0, N) of
-                "" ->
-                    false;
-                Prefix ->
-                    {prefix, Prefix}
+        {[], _} ->
+            false;
+        {L1, _} ->
+            {prefix, L1}
+    catch
+        _:_ ->
+            all
+    end;
+slice(L, N, _Uni) ->
+    %% Be careful not to traverse more of L than necessary.
+    try string:slice(L, 0, N) of
+        "" ->
+            false;
+        Prefix ->
+            %% Assume no binaries are introduced by string:slice().
+            case is_flat(L, lists:flatlength(Prefix)) of
+                true ->
+                    case string:equal(Prefix, L) of
+                        true ->
+                            all;
+                        false ->
+                            {prefix, Prefix}
+                    end;
+                false ->
+                    false
             end
     catch _:_ -> false
     end.
 
+is_flat(_L, 0) ->
+    true;
+is_flat([C|Cs], N) when is_integer(C) ->
+    is_flat(Cs, N - 1);
+is_flat(_, _N) ->
+    false.
+
 printable_bin0(Bin, D, T, Enc) ->
     Len = case D >= 0 of
               true ->
diff --git a/lib/stdlib/src/maps.erl b/lib/stdlib/src/maps.erl
index 60463feec2..51965ddb57 100644
--- a/lib/stdlib/src/maps.erl
+++ b/lib/stdlib/src/maps.erl
@@ -21,7 +21,7 @@
 -module(maps).
 
 -export([get/3, filter/2,fold/3,
-         map/2, size/1,
+         map/2, size/1, new/0,
          update_with/3, update_with/4,
          without/2, with/2,
          iterator/1, next/1]).
@@ -29,13 +29,15 @@
 %% BIFs
 -export([get/2, find/2, from_list/1,
          is_key/2, keys/1, merge/2,
-         new/0, put/3, remove/2, take/2,
+         put/3, remove/2, take/2,
          to_list/1, update/3, values/1]).
 
--opaque iterator() :: {term(), term(), iterator()}
-                      | none | nonempty_improper_list(integer(),map()).
+-opaque iterator(Key, Value) :: {Key, Value, iterator(Key, Value)} | none
+                              | nonempty_improper_list(integer(), #{Key => Value}).
 
--export_type([iterator/0]).
+-type iterator() :: iterator(term(), term()).
+
+-export_type([iterator/2, iterator/0]).
 
 -dialyzer({no_improper_lists, iterator/1}).
 
@@ -50,9 +52,7 @@
 get(_,_) -> erlang:nif_error(undef).
 
 -spec find(Key,Map) -> {ok, Value} | error when
-    Key :: term(),
-    Map :: map(),
-    Value :: term().
+    Map :: #{Key => Value, _ => _}.
 
 find(_,_) -> erlang:nif_error(undef).
 
@@ -75,9 +75,8 @@ is_key(_,_) -> erlang:nif_error(undef).
 
 
 -spec keys(Map) -> Keys when
-    Map :: map(),
-    Keys :: [Key],
-    Key :: term().
+    Map :: #{Key => _},
+    Keys :: [Key].
 
 keys(_) -> erlang:nif_error(undef).
 
@@ -91,13 +90,6 @@ keys(_) -> erlang:nif_error(undef).
 merge(_,_) -> erlang:nif_error(undef).
 
 
-
--spec new() -> Map when
-    Map :: map().
-
-new() -> erlang:nif_error(undef).
-
-
 %% Shadowed by erl_bif_types: maps:put/3
 -spec put(Key,Value,Map1) -> Map2 when
     Key :: term(),
@@ -116,17 +108,13 @@ put(_,_,_) -> erlang:nif_error(undef).
 remove(_,_) -> erlang:nif_error(undef).
 
 -spec take(Key,Map1) -> {Value,Map2} | error when
-    Key :: term(),
-    Map1 :: map(),
-    Value :: term(),
-    Map2 :: map().
+    Map1 :: #{Key => Value, _ => _},
+    Map2 :: #{_ => _}.
 
 take(_,_) -> erlang:nif_error(undef).
 
 -spec to_list(Map) -> [{Key,Value}] when
-    Map :: map(),
-    Key :: term(),
-    Value :: term().
+    Map :: #{Key => Value}.
 
 to_list(Map) when is_map(Map) ->
     to_list_internal(erts_internal:map_next(0, Map, []));
@@ -140,79 +128,69 @@ to_list_internal(Acc) ->
 
 %% Shadowed by erl_bif_types: maps:update/3
 -spec update(Key,Value,Map1) -> Map2 when
-    Key :: term(),
-    Value :: term(),
-    Map1 :: map(),
-    Map2 :: map().
+    Map1 :: #{Key := _, _ => _},
+    Map2 :: #{Key := Value, _ => _}.
 
 update(_,_,_) -> erlang:nif_error(undef).
 
 
 -spec values(Map) -> Values when
-    Map :: map(),
-    Values :: [Value],
-    Value :: term().
+    Map :: #{_ => Value},
+    Values :: [Value].
 
 values(_) -> erlang:nif_error(undef).
 
 %% End of BIFs
 
+-spec new() -> Map when
+    Map :: #{}.
+
+new() -> #{}.
+
 -spec update_with(Key,Fun,Map1) -> Map2 when
-      Key :: term(),
-      Map1 :: map(),
-      Map2 :: map(),
-      Fun :: fun((Value1 :: term()) -> Value2 :: term()).
+      Map1 :: #{Key := Value1, _ => _},
+      Map2 :: #{Key := Value2, _ => _},
+      Fun :: fun((Value1) -> Value2).
 
 update_with(Key,Fun,Map) when is_function(Fun,1), is_map(Map) ->
-    try maps:get(Key,Map) of
-        Val -> maps:update(Key,Fun(Val),Map)
-    catch
-        error:{badkey,_} ->
-            erlang:error({badkey,Key},[Key,Fun,Map])
+    case Map of
+        #{Key := Value} -> Map#{Key := Fun(Value)};
+        #{} -> erlang:error({badkey,Key},[Key,Fun,Map])
     end;
 update_with(Key,Fun,Map) ->
     erlang:error(error_type(Map),[Key,Fun,Map]).
 
 
 -spec update_with(Key,Fun,Init,Map1) -> Map2 when
-      Key :: term(),
-      Map1 :: Map1,
-      Map2 :: Map2,
-      Fun :: fun((Value1 :: term()) -> Value2 :: term()),
-      Init :: term().
+      Map1 :: #{Key => Value1, _ => _},
+      Map2 :: #{Key := Value2 | Init, _ => _},
+      Fun :: fun((Value1) -> Value2).
 
 update_with(Key,Fun,Init,Map) when is_function(Fun,1), is_map(Map) ->
-    case maps:find(Key,Map) of
-        {ok,Val} -> maps:update(Key,Fun(Val),Map);
-        error -> maps:put(Key,Init,Map)
+    case Map of
+        #{Key := Value} -> Map#{Key := Fun(Value)};
+        #{} -> Map#{Key => Init}
     end;
 update_with(Key,Fun,Init,Map) ->
     erlang:error(error_type(Map),[Key,Fun,Init,Map]).
 
 
 -spec get(Key, Map, Default) -> Value | Default when
-        Key :: term(),
-        Map :: map(),
-        Value :: term(),
-        Default :: term().
+      Map :: #{Key => Value, _ => _}.
 
 get(Key,Map,Default) when is_map(Map) ->
-    case maps:find(Key, Map) of
-        {ok, Value} ->
-            Value;
-        error ->
-            Default
+    case Map of
+        #{Key := Value} -> Value;
+        #{} -> Default
     end;
 get(Key,Map,Default) ->
     erlang:error({badmap,Map},[Key,Map,Default]).
 
 
--spec filter(Pred,MapOrIter) -> Map when
+-spec filter(Pred, MapOrIter) -> Map when
       Pred :: fun((Key, Value) -> boolean()),
-      Key  :: term(),
-      Value :: term(),
-      MapOrIter :: map() | iterator(),
-      Map :: map().
+      MapOrIter :: #{Key => Value} | iterator(Key, Value),
+      Map :: #{Key => Value}.
 
 filter(Pred,Map) when is_function(Pred,2), is_map(Map) ->
     maps:from_list(filter_1(Pred, iterator(Map)));
@@ -235,14 +213,11 @@ filter_1(Pred, Iter) ->
     end.
 
 -spec fold(Fun,Init,MapOrIter) -> Acc when
-    Fun :: fun((K, V, AccIn) -> AccOut),
+    Fun :: fun((Key, Value, AccIn) -> AccOut),
     Init :: term(),
-    Acc :: term(),
-    AccIn :: term(),
-    AccOut :: term(),
-    MapOrIter :: map() | iterator(),
-    K :: term(),
-    V :: term().
+    Acc :: AccOut,
+    AccIn :: Init | AccOut,
+    MapOrIter :: #{Key => Value} | iterator(Key, Value).
 
 fold(Fun,Init,Map) when is_function(Fun,3), is_map(Map) ->
     fold_1(Fun,Init,iterator(Map));
@@ -260,12 +235,9 @@ fold_1(Fun, Acc, Iter) ->
     end.
 
 -spec map(Fun,MapOrIter) -> Map when
-    Fun :: fun((K, V1) -> V2),
-    MapOrIter :: map() | iterator(),
-    Map :: map(),
-    K :: term(),
-    V1 :: term(),
-    V2 :: term().
+    Fun :: fun((Key, Value1) -> Value2),
+    MapOrIter :: #{Key => Value1} | iterator(Key, Value1),
+    Map :: #{Key => Value2}.
 
 map(Fun,Map) when is_function(Fun, 2), is_map(Map) ->
     maps:from_list(map_1(Fun, iterator(Map)));
@@ -291,17 +263,15 @@ size(Val) ->
     erlang:error({badmap,Val},[Val]).
 
 -spec iterator(Map) -> Iterator when
-      Map :: map(),
-      Iterator :: iterator().
+      Map :: #{Key => Value},
+      Iterator :: iterator(Key, Value).
 
 iterator(M) when is_map(M) -> [0 | M];
 iterator(M) -> erlang:error({badmap, M}, [M]).
 
 -spec next(Iterator) -> {Key, Value, NextIterator} | 'none' when
-      Iterator :: iterator(),
-      Key :: term(),
-      Value :: term(),
-      NextIterator :: iterator().
+      Iterator :: iterator(Key, Value),
+      NextIterator :: iterator(Key, Value).
 next({K, V, I}) ->
     {K, V, I};
 next([Path | Map]) when is_integer(Path), is_map(Map) ->
@@ -318,29 +288,26 @@ next(Iter) ->
     K :: term().
 
 without(Ks,M) when is_list(Ks), is_map(M) ->
-    lists:foldl(fun(K, M1) -> maps:remove(K, M1) end, M, Ks);
+    lists:foldl(fun maps:remove/2, M, Ks);
 without(Ks,M) ->
     erlang:error(error_type(M),[Ks,M]).
 
 -spec with(Ks, Map1) -> Map2 when
     Ks :: [K],
-    Map1 :: map(),
-    Map2 :: map(),
-    K :: term().
+    Map1 :: #{K => V, _ => _},
+    Map2 :: #{K => V}.
 
 with(Ks,Map1) when is_list(Ks), is_map(Map1) ->
-    Fun = fun(K, List) ->
-                  case maps:find(K, Map1) of
-                      {ok, V} ->
-                          [{K, V} | List];
-                      error ->
-                          List
-                  end
-          end,
-    maps:from_list(lists:foldl(Fun, [], Ks));
+    maps:from_list(with_1(Ks, Map1));
 with(Ks,M) ->
     erlang:error(error_type(M),[Ks,M]).
 
+with_1([K|Ks], Map) ->
+    case Map of
+        #{K := V} -> [{K,V}|with_1(Ks, Map)];
+        #{} -> with_1(Ks, Map)
+    end;
+with_1([], _Map) -> [].
 
 error_type(M) when is_map(M) -> badarg;
 error_type(V) -> {badmap, V}.
diff --git a/lib/stdlib/src/ms_transform.erl b/lib/stdlib/src/ms_transform.erl
index 6d243e1bec..97ec785c62 100644
--- a/lib/stdlib/src/ms_transform.erl
+++ b/lib/stdlib/src/ms_transform.erl
@@ -556,8 +556,8 @@ tg({call, Line, {remote,_,{atom,_,erlang},{atom, Line2, FunName}},ParaList},
 			       FunName,length(ParaList)}}) 
     end;
 tg({call, Line, {remote,_,{atom,_,ModuleName},
-		 {atom, _, FunName}},_ParaList},B) ->
-    throw({error,Line,{?ERR_GENREMOTECALL+B#tgd.eb,ModuleName,FunName}});
+		 {atom, _, FunName}},ParaList},B) ->
+    throw({error,Line,{?ERR_GENREMOTECALL+B#tgd.eb,ModuleName,FunName,length(ParaList)}});
 tg({cons,Line, H, T},B) -> 
     {cons, Line, tg(H,B), tg(T,B)};
 tg({nil, Line},_B) ->
diff --git a/lib/stdlib/src/otp_internal.erl b/lib/stdlib/src/otp_internal.erl
index aaed13ba3a..b95cb8f525 100644
--- a/lib/stdlib/src/otp_internal.erl
+++ b/lib/stdlib/src/otp_internal.erl
@@ -44,8 +44,19 @@ obsolete(Module, Name, Arity) ->
 	    no
     end.
 
-obsolete_1(net, _, _) ->
-    {deprecated, "module 'net' obsolete; use 'net_adm'"};
+obsolete_1(net, call, 4) ->
+    {deprecated, {rpc, call, 4}};
+obsolete_1(net, cast, 4) ->
+    {deprecated, {rpc, cast, 4}};
+obsolete_1(net, broadcast, 3) ->
+    {deprecated, {rpc, eval_everywhere, 3}};
+obsolete_1(net, ping, 1) ->
+    {deprecated, {net_adm, ping, 1}};
+obsolete_1(net, sleep, 1) ->
+    {deprecated, "Use 'receive after T -> ok end' instead"};
+obsolete_1(net, relay, 1) ->
+    {deprecated, {slave, relay, 1}};
+
 
 obsolete_1(erlang, now, 0) ->
     {deprecated,
@@ -55,6 +66,14 @@ obsolete_1(erlang, now, 0) ->
 obsolete_1(calendar, local_time_to_universal_time, 1) ->
     {deprecated, {calendar, local_time_to_universal_time_dst, 1}};
 
+%% *** STDLIB added in OTP 22 ***
+
+obsolete_1(sys, get_debug, 3) ->
+    {deprecated,
+     "Deprecated function. "
+     "Incorrectly documented and in fact only for internal use. "
+     "Can often be replaced with sys:get_log/1."};
+
 %% *** STDLIB added in OTP 20 ***
 
 obsolete_1(gen_fsm, start, 3) ->
@@ -398,10 +417,8 @@ obsolete_1(megaco, format_versions, 1) ->
 
 %% *** OS-MON-MIB ***
 
-obsolete_1(os_mon_mib, init, 1) ->
-    {deprecated, {os_mon_mib, load, 1}};
-obsolete_1(os_mon_mib, stop, 1) ->
-    {deprecated, {os_mon_mib, unload, 1}};
+obsolete_1(os_mon_mib, _, _) ->
+    {removed, "was removed in 22.0"};
 
 obsolete_1(auth, is_auth, 1) ->
     {deprecated, {net_adm, ping, 1}};
diff --git a/lib/stdlib/src/rand.erl b/lib/stdlib/src/rand.erl
index 362e98006e..3a9a1e007b 100644
--- a/lib/stdlib/src/rand.erl
+++ b/lib/stdlib/src/rand.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2015-2017. All Rights Reserved.
+%% Copyright Ericsson AB 2015-2018. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -32,18 +32,24 @@
          uniform/0, uniform/1, uniform_s/1, uniform_s/2,
          uniform_real/0, uniform_real_s/1,
          jump/0, jump/1,
-	     normal/0, normal/2, normal_s/1, normal_s/3
+         normal/0, normal/2, normal_s/1, normal_s/3
 	]).
 
+%% Test, dev and internal
+-export([exro928_jump_2pow512/1, exro928_jump_2pow20/1,
+	 exro928_seed/1, exro928_next/1, exro928_next_state/1,
+	 format_jumpconst58/1, seed58/2]).
+
 %% Debug
 -export([make_float/3, float2str/1, bc64/1]).
 
--compile({inline, [exs64_next/1, exsplus_next/1,
+-compile({inline, [exs64_next/1, exsplus_next/1, exsss_next/1,
 		   exs1024_next/1, exs1024_calc/2,
+                   exro928_next_state/4,
                    exrop_next/1, exrop_next_s/2,
 		   get_52/1, normal_kiwi/1]}).
 
--define(DEFAULT_ALG_HANDLER, exrop).
+-define(DEFAULT_ALG_HANDLER, exsss).
 -define(SEED_DICT, rand_seed).
 
 %% =====================================================================
@@ -80,8 +86,8 @@
 
 %% This depends on the algorithm handler function
 -type alg_state() ::
-        exs64_state() | exsplus_state() | exs1024_state() |
-        exrop_state() | term().
+	exsplus_state() | exro928_state() |  exrop_state() | exs1024_state() |
+	exs64_state() | term().
 
 %% This is the algorithm handling definition within this module,
 %% and the type to use for plugins.
@@ -124,14 +130,17 @@
 
 %% Algorithm state
 -type state() :: {alg_handler(), alg_state()}.
--type builtin_alg() :: exs64 | exsplus | exsp | exs1024 | exs1024s | exrop.
+-type builtin_alg() ::
+	exsss | exro928ss | exrop | exs1024s | exsp | exs64 | exsplus | exs1024.
 -type alg() :: builtin_alg() | atom().
 -type export_state() :: {alg(), alg_state()}.
+-type seed() :: [integer()] | integer() | {integer(), integer(), integer()}.
 -export_type(
    [builtin_alg/0, alg/0, alg_handler/0, alg_state/0,
-    state/0, export_state/0]).
+    state/0, export_state/0, seed/0]).
 -export_type(
-   [exs64_state/0, exsplus_state/0, exs1024_state/0, exrop_state/0]).
+   [exsplus_state/0, exro928_state/0, exrop_state/0, exs1024_state/0,
+    exs64_state/0]).
 
 %% =====================================================================
 %% Range macro and helper
@@ -229,12 +238,12 @@ export_seed() ->
     end.
 
 -spec export_seed_s(State :: state()) -> export_state().
-export_seed_s({#{type:=Alg}, Seed}) -> {Alg, Seed}.
+export_seed_s({#{type:=Alg}, AlgState}) -> {Alg, AlgState}.
 
 %% seed(Alg) seeds RNG with runtime dependent values
 %% and return the NEW state
 
-%% seed({Alg,Seed}) setup RNG with a previously exported seed
+%% seed({Alg,AlgState}) setup RNG with a previously exported seed
 %% and return the NEW state
 
 -spec seed(
@@ -246,11 +255,11 @@ seed(Alg) ->
 -spec seed_s(
         AlgOrStateOrExpState :: builtin_alg() | state() | export_state()) ->
                     state().
-seed_s({AlgHandler, _Seed} = State) when is_map(AlgHandler) ->
+seed_s({AlgHandler, _AlgState} = State) when is_map(AlgHandler) ->
     State;
-seed_s({Alg0, Seed}) ->
-    {Alg,_SeedFun} = mk_alg(Alg0),
-    {Alg, Seed};
+seed_s({Alg, AlgState}) when is_atom(Alg) ->
+    {AlgHandler,_SeedFun} = mk_alg(Alg),
+    {AlgHandler,AlgState};
 seed_s(Alg) ->
     seed_s(Alg, {erlang:phash2([{node(),self()}]),
 		 erlang:system_time(),
@@ -259,19 +268,15 @@ seed_s(Alg) ->
 %% seed/2: seeds RNG with the algorithm and given values
 %% and returns the NEW state.
 
--spec seed(
-        Alg :: builtin_alg(), Seed :: {integer(), integer(), integer()}) ->
-                  state().
-seed(Alg0, S0) ->
-    seed_put(seed_s(Alg0, S0)).
+-spec seed(Alg :: builtin_alg(),  Seed :: seed()) -> state().
+seed(Alg, Seed) ->
+    seed_put(seed_s(Alg, Seed)).
 
--spec seed_s(
-        Alg :: builtin_alg(), Seed :: {integer(), integer(), integer()}) ->
-                    state().
-seed_s(Alg0, S0 = {_, _, _}) ->
-    {Alg, Seed} = mk_alg(Alg0),
-    AS = Seed(S0),
-    {Alg, AS}.
+-spec seed_s(Alg :: builtin_alg(), Seed :: seed()) -> state().
+seed_s(Alg, Seed) ->
+    {AlgHandler,SeedFun} = mk_alg(Alg),
+    AlgState = SeedFun(Seed),
+    {AlgHandler,AlgState}.
 
 %%% uniform/0, uniform/1, uniform_s/1, uniform_s/2 are all
 %%% uniformly distributed random numbers.
@@ -281,8 +286,8 @@ seed_s(Alg0, S0 = {_, _, _}) ->
 
 -spec uniform() -> X :: float().
 uniform() ->
-    {X, Seed} = uniform_s(seed_get()),
-    _ = seed_put(Seed),
+    {X, State} = uniform_s(seed_get()),
+    _ = seed_put(State),
     X.
 
 %% uniform/1: given an integer N >= 1,
@@ -291,8 +296,8 @@ uniform() ->
 
 -spec uniform(N :: pos_integer()) -> X :: pos_integer().
 uniform(N) ->
-    {X, Seed} = uniform_s(N, seed_get()),
-    _ = seed_put(Seed),
+    {X, State} = uniform_s(N, seed_get()),
+    _ = seed_put(State),
     X.
 
 %% uniform_s/1: given a state, uniform_s/1
@@ -486,7 +491,7 @@ uniform_real_s(Alg, Next, M0, BitNo, R1, V1, Bits) ->
                     {M1 * math:pow(2.0, BitNo - 56), {Alg, R1}};
                 BitNo =:= -1008 ->
                     %% Endgame
-                    %% For the last round we can not have 14 zeros or more
+                    %% For the last round we cannot have 14 zeros or more
                     %% at the top of M1 because then we will underflow,
                     %% so we need at least 43 bits
                     if
@@ -613,6 +618,11 @@ mk_alg(exsp) ->
        uniform=>fun exsp_uniform/1, uniform_n=>fun exsp_uniform/2,
        jump=>fun exsplus_jump/1},
      fun exsplus_seed/1};
+mk_alg(exsss) ->
+    {#{type=>exsss, bits=>58, next=>fun exsss_next/1,
+       uniform=>fun exsss_uniform/1, uniform_n=>fun exsss_uniform/2,
+       jump=>fun exsplus_jump/1},
+     fun exsss_seed/1};
 mk_alg(exs1024) ->
     {#{type=>exs1024, max=>?MASK(64), next=>fun exs1024_next/1,
        jump=>fun exs1024_jump/1},
@@ -625,7 +635,13 @@ mk_alg(exrop) ->
     {#{type=>exrop, bits=>58, weak_low_bits=>1, next=>fun exrop_next/1,
        uniform=>fun exrop_uniform/1, uniform_n=>fun exrop_uniform/2,
        jump=>fun exrop_jump/1},
-     fun exrop_seed/1}.
+     fun exrop_seed/1};
+mk_alg(exro928ss) ->
+    {#{type=>exro928ss, bits=>58, next=>fun exro928ss_next/1,
+       uniform=>fun exro928ss_uniform/1,
+       uniform_n=>fun exro928ss_uniform/2,
+       jump=>fun exro928_jump/1},
+     fun exro928_seed/1}.
 
 %% =====================================================================
 %% exs64 PRNG: Xorshift64*
@@ -635,6 +651,14 @@ mk_alg(exrop) ->
 
 -opaque exs64_state() :: uint64().
 
+exs64_seed(L) when is_list(L) ->
+    [R] = seed64_nz(1, L),
+    R;
+exs64_seed(A) when is_integer(A) ->
+    [R] = seed64(1, ?MASK(64, A)),
+    R;
+%%
+%% Traditional integer triplet seed
 exs64_seed({A1, A2, A3}) ->
     {V1, _} = exs64_next((?MASK(32, A1) * 4294967197 + 1)),
     {V2, _} = exs64_next((?MASK(32, A2) * 4294967231 + 1)),
@@ -656,11 +680,49 @@ exs64_next(R) ->
 %% 58 bits fits into an immediate on 64bits erlang and is thus much faster.
 %% Modification of the original Xorshift128+ algorithm to 116
 %% by Sebastiano Vigna, a lot of thanks for his help and work.
+%%
+%% Reference C code for Xorshift116+ and Xorshift116**
+%%
+%% #include <stdint.h>
+%%
+%% #define MASK(b, v) (((UINT64_C(1) << (b)) - 1) & (v))
+%% #define BSL(b, v, n) (MASK((b)-(n), (v)) << (n))
+%% #define ROTL(b, v, n) (BSL((b), (v), (n)) | ((v) >> ((b)-(n))))
+%%
+%% uint64_t s[2];
+%%
+%% uint64_t next(void) {
+%%     uint64_t s1 = s[0];
+%%     const uint64_t s0 = s[1];
+%%
+%%     s1 ^= BSL(58, s1, 24); // a
+%%     s1 ^= s0 ^ (s1 >> 11) ^ (s0 >> 41); // b, c
+%%     s[0] = s0;
+%%     s[1] = s1;
+%%
+%%     const uint64_t result_plus = MASK(58, s0 + s1);
+%%     uint64_t result_starstar = s0;
+%%     result_starstar = MASK(58, result_starstar * 5);
+%%     result_starstar = ROTL(58, result_starstar, 7);
+%%     result_starstar = MASK(58, result_starstar * 9);
+%%
+%%     return result_plus;
+%%     return result_starstar;
+%% }
+%%
 %% =====================================================================
 -opaque exsplus_state() :: nonempty_improper_list(uint58(), uint58()).
 
 -dialyzer({no_improper_lists, exsplus_seed/1}).
 
+exsplus_seed(L) when is_list(L) ->
+    [S0,S1] = seed58_nz(2, L),
+    [S0|S1];
+exsplus_seed(X) when is_integer(X) ->
+    [S0,S1] = seed58(2, ?MASK(64, X)),
+    [S0|S1];
+%%
+%% Traditional integer triplet seed
 exsplus_seed({A1, A2, A3}) ->
     {_, R1} = exsplus_next(
                 [?MASK(58, (A1 * 4294967197) + 1)|
@@ -670,16 +732,62 @@ exsplus_seed({A1, A2, A3}) ->
                  tl(R1)]),
     R2.
 
+-dialyzer({no_improper_lists, exsss_seed/1}).
+
+exsss_seed(L) when is_list(L) ->
+    [S0,S1] = seed58_nz(2, L),
+    [S0|S1];
+exsss_seed(X) when is_integer(X) ->
+    [S0,S1] = seed58(2, ?MASK(64, X)),
+    [S0|S1];
+%%
+%% Seed from traditional integer triple - mix into splitmix
+exsss_seed({A1, A2, A3}) ->
+    {_, X0} = seed58(?MASK(64, A1)),
+    {S0, X1} = seed58(?MASK(64, A2) bxor X0),
+    {S1, _} = seed58(?MASK(64, A3) bxor X1),
+    [S0|S1].
+
+%% Advance Xorshift116 state one step
+-define(
+   exs_next(S0, S1, S1_b),
+   begin
+       S1_b = S1 bxor ?BSL(58, S1, 24),
+       S1_b bxor S0 bxor (S1_b bsr 11) bxor (S0 bsr 41)
+   end).
+
+-define(
+   scramble_starstar(S, V_a, V_b),
+   begin
+       %% The multiply by add shifted trick avoids creating bignums
+       %% which improves performance significantly
+       %%
+       V_a = ?MASK(58, S + ?BSL(58, S, 2)), % V_a = S * 5
+       V_b = ?ROTL(58, V_a, 7),
+       ?MASK(58, V_b + ?BSL(58, V_b, 3)) % V_b * 9
+   end).
+
 -dialyzer({no_improper_lists, exsplus_next/1}).
 
-%% Advance xorshift116+ state for one step and generate 58bit unsigned integer
+%% Advance state and generate 58bit unsigned integer
 -spec exsplus_next(exsplus_state()) -> {uint58(), exsplus_state()}.
 exsplus_next([S1|S0]) ->
     %% Note: members s0 and s1 are swapped here
-    S11 = S1 bxor ?BSL(58, S1, 24),
-    S12 = S11 bxor S0 bxor (S11 bsr 11) bxor (S0 bsr 41),
-    {?MASK(58, S0 + S12), [S0|S12]}.
+    NewS1 = ?exs_next(S0, S1, S1_1),
+    {?MASK(58, S0 + NewS1), [S0|NewS1]}.
+%%    %% Note: members s0 and s1 are swapped here
+%%    S11 = S1 bxor ?BSL(58, S1, 24),
+%%    S12 = S11 bxor S0 bxor (S11 bsr 11) bxor (S0 bsr 41),
+%%    {?MASK(58, S0 + S12), [S0|S12]}.
+
+-dialyzer({no_improper_lists, exsss_next/1}).
 
+-spec exsss_next(exsplus_state()) -> {uint58(), exsplus_state()}.
+exsss_next([S1|S0]) ->
+    %% Note: members s0 and s1 are swapped here
+    NewS1 = ?exs_next(S0, S1, S1_1),
+    {?scramble_starstar(S0, V_0, V_1), [S0|NewS1]}.
+%%    {?MASK(58, S0 + NewS1), [S0|NewS1]}.
 
 exsp_uniform({Alg, R0}) ->
     {I, R1} = exsplus_next(R0),
@@ -687,18 +795,48 @@ exsp_uniform({Alg, R0}) ->
     %% randomness quality than the others
     {(I bsr (58-53)) * ?TWO_POW_MINUS53, {Alg, R1}}.
 
+exsss_uniform({Alg, R0}) ->
+    {I, R1} = exsss_next(R0),
+    {(I bsr (58-53)) * ?TWO_POW_MINUS53, {Alg, R1}}.
+
 exsp_uniform(Range, {Alg, R}) ->
     {V, R1} = exsplus_next(R),
     MaxMinusRange = ?BIT(58) - Range,
     ?uniform_range(Range, Alg, R1, V, MaxMinusRange, I).
 
+exsss_uniform(Range, {Alg, R}) ->
+    {V, R1} = exsss_next(R),
+    MaxMinusRange = ?BIT(58) - Range,
+    ?uniform_range(Range, Alg, R1, V, MaxMinusRange, I).
 
-%% This is the jump function for the exsplus generator, equivalent
+
+%% This is the jump function for the exs* generators,
+%% i.e the Xorshift116 generators,  equivalent
 %% to 2^64 calls to next/1; it can be used to generate 2^52
 %% non-overlapping subsequences for parallel computations.
 %% Note: the jump function takes 116 times of the execution time of
 %% next/1.
-
+%%
+%% #include <stdint.h>
+%%
+%% void jump(void) {
+%%   static const uint64_t JUMP[] = { 0x02f8ea6bc32c797,
+%% 				   0x345d2a0f85f788c };
+%%   int i, b;
+%%   uint64_t s0 = 0;
+%%   uint64_t s1 = 0;
+%%   for(i = 0; i < sizeof JUMP / sizeof *JUMP; i++)
+%%     for(b = 0; b < 58; b++) {
+%%       if (JUMP[i] & 1ULL << b) {
+%% 	s0 ^= s[0];
+%% 	s1 ^= s[1];
+%%       }
+%%       next();
+%%     }
+%%   s[0] = s0;
+%%   s[1] = s1;
+%% }
+%%
 %% -define(JUMPCONST, 16#000d174a83e17de2302f8ea6bc32c797).
 %% split into 58-bit chunks
 %% and two iterative executions
@@ -708,7 +846,8 @@ exsp_uniform(Range, {Alg, R}) ->
 -define(JUMPELEMLEN, 58).
 
 -dialyzer({no_improper_lists, exsplus_jump/1}).
--spec exsplus_jump(state()) -> state().
+-spec exsplus_jump({alg_handler(), exsplus_state()}) ->
+                          {alg_handler(), exsplus_state()}.
 exsplus_jump({Alg, S}) ->
     {S1, AS1} = exsplus_jump(S, [0|0], ?JUMPCONST1, ?JUMPELEMLEN),
     {_,  AS2} = exsplus_jump(S1, AS1,  ?JUMPCONST2, ?JUMPELEMLEN),
@@ -735,6 +874,12 @@ exsplus_jump(S, [AS0|AS1], J, N) ->
 
 -opaque exs1024_state() :: {list(uint64()), list(uint64())}.
 
+exs1024_seed(L) when is_list(L) ->
+    {seed64_nz(16, L), []};
+exs1024_seed(X) when is_integer(X) ->
+    {seed64(16, ?MASK(64, X)), []};
+%%
+%% Seed from traditional triple, remain backwards compatible
 exs1024_seed({A1, A2, A3}) ->
     B1 = ?MASK(21, (?MASK(21, A1) + 1) * 2097131),
     B2 = ?MASK(21, (?MASK(21, A2) + 1) * 2097133),
@@ -806,8 +951,8 @@ exs1024_next({[H], RL}) ->
 -define(JUMPTOTALLEN, 1024).
 -define(RINGLEN, 16).
 
--spec exs1024_jump(state()) -> state().
-
+-spec exs1024_jump({alg_handler(), exs1024_state()}) ->
+                          {alg_handler(), exs1024_state()}.
 exs1024_jump({Alg, {L, RL}}) ->
     P = length(RL),
     AS = exs1024_jump({L, RL},
@@ -832,6 +977,195 @@ exs1024_jump({L, RL}, AS, JL, J, N, TN) ->
     end.
 
 %% =====================================================================
+%% exro928ss PRNG: Xoroshiro928**
+%%
+%% Reference URL: http://vigna.di.unimi.it/ftp/papers/ScrambledLinear.pdf
+%% i.e the Xoroshiro1024 generator with ** scrambler
+%% with {S, R, T} = {5, 7, 9} as recommended in the paper.
+%%
+%% {A, B, C} were tried out and selected as {44, 9, 45}
+%% and the jump coefficients calculated.
+%%
+%% Standard jump function pseudocode:
+%% 
+%%     Jump constant j = 0xb10773cb...44085302f77130ca
+%%     Generator state: s
+%%     New generator state: t = 0
+%%     foreach bit in j, low to high:
+%%         if the bit is one:
+%%             t ^= s
+%%         next s
+%%     s = t
+%%
+%% Generator used for reference value calculation:
+%%
+%%     #include <stdint.h>
+%%     #include <stdio.h>
+%%     
+%%     int p = 0;
+%%     uint64_t s[16];
+%%     
+%%     #define MASK(x) ((x) & ((UINT64_C(1) << 58) - 1))
+%%     static __inline uint64_t rotl(uint64_t x, int n) {
+%%         return MASK(x << n) | (x >> (58 - n));
+%%     }
+%%     
+%%     uint64_t next() {
+%%         const int q = p;
+%%         const uint64_t s0 = s[p = (p + 1) & 15];
+%%         uint64_t s15 = s[q];
+%%     
+%%         const uint64_t result_starstar = MASK(rotl(MASK(s0 * 5), 7) * 9);
+%%     
+%%         s15 ^= s0;
+%%         s[q] = rotl(s0, 44) ^ s15 ^ MASK(s15 << 9);
+%%         s[p] = rotl(s15, 45);
+%%     
+%%         return result_starstar;
+%%     }
+%%
+%%     static const uint64_t jump_2pow512[15] =
+%%         { 0x44085302f77130ca, 0xba05381fdfd14902, 0x10a1de1d7d6813d2,
+%%           0xb83fe51a1eb3be19, 0xa81b0090567fd9f0, 0x5ac26d5d20f9b49f,
+%%           0x4ddd98ee4be41e01, 0x0657e19f00d4b358, 0xf02f778573cf0f0a,
+%%           0xb45a3a8a3cef3cc0, 0x6e62a33cc2323831, 0xbcb3b7c4cc049c53,
+%%           0x83f240c6007e76ce, 0xe19f5fc1a1504acd, 0x00000000b10773cb };
+%%
+%%     static const uint64_t jump_2pow20[15] =
+%%         { 0xbdb966a3daf905e6, 0x644807a56270cf78, 0xda90f4a806c17e9e,
+%%           0x4a426866bfad3c77, 0xaf699c306d8e7566, 0x8ebc73c700b8b091,
+%%           0xc081a7bf148531fb, 0xdc4d3af15f8a4dfd, 0x90627c014098f4b6,
+%%           0x06df2eb1feaf0fb6, 0x5bdeb1a5a90f2e6b, 0xa480c5878c3549bd,
+%%           0xff45ef33c82f3d48, 0xa30bebc15fefcc78, 0x00000000cb3d181c };
+%%
+%%     void jump(const uint64_t *jump) {
+%%         uint64_t j, t[16] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
+%%         int m, n, k;
+%%         for (m = 0;  m < 15;  m++, jump++) {
+%%             for (n = 0, j = *jump;  n < 64;  n++, j >>= 1) {
+%%                 if ((j & 1) != 0) {
+%%                     for (k = 0;  k < 16;  k++) {
+%%                         t[k] ^= s[(p + k) & 15];
+%%                     }
+%%                 }
+%%                 next();
+%%             }
+%%         }
+%%         for (k = 0;  k < 16;  k++) {
+%%             s[(p + k) & 15] = t[k];
+%%         }
+%%     }
+%%
+%% =====================================================================
+
+-opaque exro928_state() :: {list(uint58()), list(uint58())}.
+
+-spec exro928_seed(
+        list(uint58()) | integer() | {integer(), integer(), integer()}) ->
+                          exro928_state().
+exro928_seed(L) when is_list(L) ->
+    {seed58_nz(16, L), []};
+exro928_seed(X) when is_integer(X) ->
+    {seed58(16, ?MASK(64, X)), []};
+%%
+%% Seed from traditional integer triple - mix into splitmix
+exro928_seed({A1, A2, A3}) ->
+    {S0, X0} = seed58(?MASK(64, A1)),
+    {S1, X1} = seed58(?MASK(64, A2) bxor X0),
+    {S2, X2} = seed58(?MASK(64, A3) bxor X1),
+    {[S0,S1,S2|seed58(13, X2)], []}.
+
+
+%% Update the state and calculate output word
+-spec exro928ss_next(exro928_state()) -> {uint58(), exro928_state()}.
+exro928ss_next({[S15,S0|Ss], Rs}) ->
+    SR = exro928_next_state(Ss, Rs, S15, S0),
+    %%
+    %% {S, R, T} = {5, 7, 9}
+    %% const uint64_t result_starstar = rotl(s0 * S, R) * T;
+    %%
+    {?scramble_starstar(S0, V_0, V_1), SR};
+%%    %% The multiply by add shifted trick avoids creating bignums
+%%    %% which improves performance significantly
+%%    %%
+%%    V0 = ?MASK(58, S0 + ?BSL(58, S0, 2)), % V0 = S0 * 5
+%%    V1 = ?ROTL(58, V0, 7),
+%%    V = ?MASK(58, V1 + ?BSL(58, V1, 3)), % V = V1 * 9
+%%    {V, SR};
+exro928ss_next({[S15], Rs}) ->
+    exro928ss_next({[S15|lists:reverse(Rs)], []}).
+
+-spec exro928_next(exro928_state()) -> {{uint58(),uint58()}, exro928_state()}.
+exro928_next({[S15,S0|Ss], Rs}) ->
+    SR = exro928_next_state(Ss, Rs, S15, S0),
+    {{S15,S0}, SR};
+exro928_next({[S15], Rs}) ->
+    exro928_next({[S15|lists:reverse(Rs)], []}).
+
+%% Just update the state
+-spec exro928_next_state(exro928_state()) -> exro928_state().
+exro928_next_state({[S15,S0|Ss], Rs}) ->
+    exro928_next_state(Ss, Rs, S15, S0);
+exro928_next_state({[S15], Rs}) ->
+    [S0|Ss] = lists:reverse(Rs),
+    exro928_next_state(Ss, [], S15, S0).
+
+exro928_next_state(Ss, Rs, S15, S0) ->
+    %% {A, B, C} = {44, 9, 45},
+    %% s15 ^= s0;
+    %% NewS15: s[q] = rotl(s0, A) ^ s15 ^ (s15 << B);
+    %% NewS0: s[p] = rotl(s15, C);
+    %%
+    Q = S15 bxor S0,
+    NewS15 = ?ROTL(58, S0, 44) bxor Q bxor ?BSL(58, Q, 9),
+    NewS0 = ?ROTL(58, Q, 45),
+    {[NewS0|Ss], [NewS15|Rs]}.
+
+
+exro928ss_uniform({Alg, SR}) ->
+    {V, NewSR} = exro928ss_next(SR),
+    {(V bsr (58-53)) * ?TWO_POW_MINUS53, {Alg, NewSR}}.
+
+exro928ss_uniform(Range, {Alg, SR}) ->
+    {V, NewSR} = exro928ss_next(SR),
+    MaxMinusRange = ?BIT(58) - Range,
+    ?uniform_range(Range, Alg, NewSR, V, MaxMinusRange, I).
+
+
+-spec exro928_jump({alg_handler(), exro928_state()}) ->
+                          {alg_handler(), exro928_state()}.
+exro928_jump({Alg, SR}) ->
+    {Alg,exro928_jump_2pow512(SR)}.
+
+-spec exro928_jump_2pow512(exro928_state()) -> exro928_state().
+exro928_jump_2pow512(SR) ->
+    polyjump(
+      SR, fun exro928_next_state/1,
+      %% 2^512
+      [16#4085302F77130CA, 16#54E07F7F4524091,
+       16#5E1D7D6813D2BA0, 16#4687ACEF8644287,
+       16#4567FD9F0B83FE5, 16#43E6D27EA06C024,
+       16#641E015AC26D5D2, 16#6CD61377663B92F,
+       16#70A0657E19F00D4, 16#43C0BDDE15CF3C3,
+       16#745A3A8A3CEF3CC, 16#58A8CF308C8E0C6,
+       16#7B7C4CC049C536E, 16#431801F9DB3AF2C,
+       16#41A1504ACD83F24, 16#6C41DCF2F867D7F]).
+
+-spec exro928_jump_2pow20(exro928_state()) -> exro928_state().
+exro928_jump_2pow20(SR) ->
+    polyjump(
+      SR, fun exro928_next_state/1,
+      %% 2^20
+      [16#5B966A3DAF905E6, 16#601E9589C33DE2F,
+       16#74A806C17E9E644, 16#59AFEB4F1DF6A43,
+       16#46D8E75664A4268, 16#42E2C246BDA670C,
+       16#4531FB8EBC73C70, 16#537F702069EFC52,
+       16#4B6DC4D3AF15F8A, 16#5A4189F0050263D,
+       16#46DF2EB1FEAF0FB, 16#77AC696A43CB9AC,
+       16#4C5878C3549BD5B, 16#7CCF20BCF522920,
+       16#415FEFCC78FF45E, 16#72CF460728C2FAF]).
+
+%% =====================================================================
 %% exrop PRNG: Xoroshiro116+
 %%
 %% Reference URL: http://xorshift.di.unimi.it/
@@ -899,6 +1233,15 @@ exs1024_jump({L, RL}, AS, JL, J, N, TN) ->
 -opaque exrop_state() :: nonempty_improper_list(uint58(), uint58()).
 
 -dialyzer({no_improper_lists, exrop_seed/1}).
+
+exrop_seed(L) when is_list(L) ->
+    [S0,S1] = seed58_nz(2, L),
+    [S0|S1];
+exrop_seed(X) when is_integer(X) ->
+    [S0,S1] = seed58(2, ?MASK(64, X)),
+    [S0|S1];
+%%
+%% Traditional integer triplet seed
 exrop_seed({A1, A2, A3}) ->
     [_|S1] =
         exrop_next_s(
@@ -962,6 +1305,142 @@ exrop_jump([S__0|S__1] = _S, S0, S1, J, Js) ->
     end.
 
 %% =====================================================================
+%% Mask and fill state list, ensure not all zeros
+%% =====================================================================
+
+seed58_nz(N, Ss) ->
+    seed_nz(N, Ss, 58, false).
+
+seed64_nz(N, Ss) ->
+    seed_nz(N, Ss, 64, false).
+
+seed_nz(_N, [], _M, false) ->
+    erlang:error(zero_seed);
+seed_nz(0, [_|_], _M, _NZ) ->
+    erlang:error(too_many_seed_integers);
+seed_nz(0, [], _M, _NZ) ->
+    [];
+seed_nz(N, [], M, true) ->
+    [0|seed_nz(N - 1, [], M, true)];
+seed_nz(N, [S|Ss], M, NZ) ->
+    if
+	is_integer(S) ->
+	    R = ?MASK(M, S),
+	    [R|seed_nz(N - 1, Ss, M, NZ orelse R =/= 0)];
+	true ->
+	    erlang:error(non_integer_seed)
+    end.
+
+%% =====================================================================
+%% Splitmix seeders, lowest bits of SplitMix64, zeros skipped
+%% =====================================================================
+
+-spec seed58(non_neg_integer(), uint64()) -> list(uint58()).
+seed58(0, _X) ->
+    [];
+seed58(N, X) ->
+    {Z,NewX} = seed58(X),
+    [Z|seed58(N - 1, NewX)].
+%%
+seed58(X_0) ->
+    {Z0,X} = splitmix64_next(X_0),
+    case ?MASK(58, Z0) of
+	0 ->
+	    seed58(X);
+	Z ->
+	    {Z,X}
+    end.
+
+-spec seed64(non_neg_integer(), uint64()) -> list(uint64()).
+seed64(0, _X) ->
+    [];
+seed64(N, X) ->
+    {Z,NewX} = seed64(X),
+    [Z|seed64(N - 1, NewX)].
+%%
+seed64(X_0) ->
+    {Z,X} = ZX = splitmix64_next(X_0),
+    if
+	Z =:= 0 ->
+	    seed64(X);
+	true ->
+	    ZX
+    end.
+
+%% The SplitMix64 generator:
+%%
+%% uint64_t splitmix64_next() {
+%% 	uint64_t z = (x += 0x9e3779b97f4a7c15);
+%% 	z = (z ^ (z >> 30)) * 0xbf58476d1ce4e5b9;
+%% 	z = (z ^ (z >> 27)) * 0x94d049bb133111eb;
+%% 	return z ^ (z >> 31);
+%% }
+%%
+splitmix64_next(X_0) ->
+    X = ?MASK(64, X_0 + 16#9e3779b97f4a7c15),
+    Z_0 = ?MASK(64, (X bxor (X bsr 30)) * 16#bf58476d1ce4e5b9),
+    Z_1 = ?MASK(64, (Z_0 bxor (Z_0 bsr 27)) * 16#94d049bb133111eb),
+    {?MASK(64, Z_1 bxor (Z_1 bsr 31)),X}.
+
+%% =====================================================================
+%% Polynomial jump with a jump constant word list,
+%% high bit in each word marking top of word,
+%% SR is a {Forward, Reverse} queue tuple with Forward never empty
+%% =====================================================================
+
+polyjump({Ss, Rs} = SR, NextState, JumpConst) ->
+    %% Create new state accumulator T
+    Ts = lists:duplicate(length(Ss) + length(Rs), 0),
+    polyjump(SR, NextState, JumpConst, Ts).
+%%
+%% Foreach jump word
+polyjump(_SR, _NextState, [], Ts) ->
+    %% Return new calculated state
+    {Ts, []};
+polyjump(SR, NextState, [J|Js], Ts) ->
+    polyjump(SR, NextState, Js, Ts, J).
+%%
+%% Foreach bit in jump word until top bit
+polyjump(SR, NextState, Js, Ts, 1) ->
+    polyjump(SR, NextState, Js, Ts);
+polyjump({Ss, Rs} = SR, NextState, Js, Ts, J) when J =/= 0 ->
+    NewSR = NextState(SR),
+    NewJ = J bsr 1,
+    case ?MASK(1, J) of
+        0 ->
+            polyjump(NewSR, NextState, Js, Ts, NewJ);
+        1 ->
+            %% Xor this state onto T
+            polyjump(NewSR, NextState, Js, xorzip_sr(Ts, Ss, Rs), NewJ)
+    end.
+
+xorzip_sr([], [], undefined) ->
+    [];
+xorzip_sr(Ts, [], Rs) ->
+    xorzip_sr(Ts, lists:reverse(Rs), undefined);
+xorzip_sr([T|Ts], [S|Ss], Rs) ->
+    [T bxor S|xorzip_sr(Ts, Ss, Rs)].
+
+%% =====================================================================
+
+format_jumpconst58(String) ->
+    ReOpts = [{newline,any},{capture,all_but_first,binary},global],
+    {match,Matches} = re:run(String, "0x([a-zA-Z0-9]+)", ReOpts),
+    format_jumcons58_matches(lists:reverse(Matches), 0).
+
+format_jumcons58_matches([], J) ->
+    format_jumpconst58_value(J);
+format_jumcons58_matches([[Bin]|Matches], J) ->
+    NewJ = (J bsl 64) bor binary_to_integer(Bin, 16),
+    format_jumcons58_matches(Matches, NewJ).
+
+format_jumpconst58_value(0) ->
+    ok;
+format_jumpconst58_value(J) ->
+    io:format("16#~s,~n", [integer_to_list(?MASK(58, J) bor ?BIT(58), 16)]),
+    format_jumpconst58_value(J bsr 58).
+
+%% =====================================================================
 %% Ziggurat cont
 %% =====================================================================
 -define(NOR_R, 3.6541528853610087963519472518).
diff --git a/lib/stdlib/src/slave.erl b/lib/stdlib/src/slave.erl
index 5e8c1a43ea..4791e3ebda 100644
--- a/lib/stdlib/src/slave.erl
+++ b/lib/stdlib/src/slave.erl
@@ -104,18 +104,17 @@ relay1(Pid) ->
 %% this to work is that the 'erl' program can be found in PATH.
 %%
 %% If the master and slave are on different hosts, start/N uses
-%% the 'rsh' program to spawn an Erlang node on the other host.
+%% the 'ssh' program to spawn an Erlang node on the other host.
 %% Alternative, if the master was started as
 %% 'erl -sname xxx -rsh my_rsh...', then 'my_rsh' will be used instead
-%% of 'rsh' (this is useful for systems where the rsh program is named
-%% 'remsh').
+%% of 'ssh' (this is useful for systems still using rsh or remsh).
 %%
 %% For this to work, the following conditions must be fulfilled:
 %%
-%% 1. There must be an Rsh program on computer; if not an error
+%% 1. There must be an ssh program on computer; if not an error
 %%    is returned.
 %%
-%% 2. The hosts must be configured to allowed 'rsh' access without
+%% 2. The hosts must be configured to allow 'ssh' access without
 %%    prompts for password.
 %%
 %% The slave node will have its filer and user server redirected
@@ -286,7 +285,7 @@ register_unique_name(Number) ->
 
 %% Makes up the command to start the nodes.
 %% If the node should run on the local host, there is
-%% no need to use rsh.
+%% no need to use a remote shell.
 
 mk_cmd(Host, Name, Args, Waiter, Prog0) ->
     Prog = quote_progname(Prog0),
@@ -342,9 +341,7 @@ do_quote_progname([Prog,Arg|Args]) ->
 		lists:flatten(lists:map(fun(X) -> [" ",X] end, [Arg|Args]))
     end.
 
-%% Give the user an opportunity to run another program,
-%% than the "rsh".  On HP-UX rsh is called remsh; thus HP users
-%% must start erlang as erl -rsh remsh.
+%% Give the user an opportunity to run another program than "ssh".
 %%
 %% Also checks that the given program exists.
 %%
@@ -354,7 +351,7 @@ rsh() ->
     Rsh =
 	case init:get_argument(rsh) of
 	    {ok, [[Prog]]} -> Prog;
-	    _ -> "rsh"
+	    _ -> "ssh"
 	end,
     case os:find_executable(Rsh) of
 	false -> {error, no_rsh};
diff --git a/lib/stdlib/src/stdlib.app.src b/lib/stdlib/src/stdlib.app.src
index cd09872b87..9cd425db9a 100644
--- a/lib/stdlib/src/stdlib.app.src
+++ b/lib/stdlib/src/stdlib.app.src
@@ -108,7 +108,7 @@
                dets]},
   {applications, [kernel]},
   {env, []},
-  {runtime_dependencies, ["sasl-3.0","kernel-6.0","erts-10.0","crypto-3.3",
+  {runtime_dependencies, ["sasl-3.0","kernel-6.0","erts-@OTP-15128@","crypto-3.3",
 			  "compiler-5.0"]}
 ]}.
 
diff --git a/lib/stdlib/src/stdlib.appup.src b/lib/stdlib/src/stdlib.appup.src
index 2a324aef82..08612ed17f 100644
--- a/lib/stdlib/src/stdlib.appup.src
+++ b/lib/stdlib/src/stdlib.appup.src
@@ -38,7 +38,12 @@
   {<<"^3\\.5\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]},
   {<<"^3\\.5\\.1(?:\\.[0-9]+)*$">>,[restart_new_emulator]},
   {<<"^3\\.6$">>,[restart_new_emulator]},
-  {<<"^3\\.6\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]}],
+  {<<"^3\\.6\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]},
+  {<<"^3\\.7$">>,[restart_new_emulator]},
+  {<<"^3\\.7\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]},
+  {<<"^3\\.7\\.1(?:\\.[0-9]+)*$">>,[restart_new_emulator]},
+  {<<"^3\\.8$">>,[restart_new_emulator]},
+  {<<"^3\\.8\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]}],
  [{<<"^3\\.4$">>,[restart_new_emulator]},
   {<<"^3\\.4\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]},
   {<<"^3\\.4\\.1(?:\\.[0-9]+)*$">>,[restart_new_emulator]},
@@ -50,4 +55,9 @@
   {<<"^3\\.5\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]},
   {<<"^3\\.5\\.1(?:\\.[0-9]+)*$">>,[restart_new_emulator]},
   {<<"^3\\.6$">>,[restart_new_emulator]},
-  {<<"^3\\.6\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]}]}.
+  {<<"^3\\.6\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]},
+  {<<"^3\\.7$">>,[restart_new_emulator]},
+  {<<"^3\\.7\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]},
+  {<<"^3\\.7\\.1(?:\\.[0-9]+)*$">>,[restart_new_emulator]},
+  {<<"^3\\.8$">>,[restart_new_emulator]},
+  {<<"^3\\.8\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]}]}.
diff --git a/lib/stdlib/src/string.erl b/lib/stdlib/src/string.erl
index 2939e78d9d..1f8bdc5432 100644
--- a/lib/stdlib/src/string.erl
+++ b/lib/stdlib/src/string.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1996-2018. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2019. All Rights Reserved.
 %% 
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -1247,18 +1247,20 @@ split_1(Bin, [_C|_]=Needle, Start, Where, Curr0, Acc) ->
             end
     end.
 
-lexemes_m([CP|_]=Cs0, {GCs,CPs,_}=Seps, Ts) when is_integer(CP) ->
+lexemes_m([CP|_]=Cs0, {GCs,CPs,_}=Seps0, Ts) when is_integer(CP) ->
     case lists:member(CP, CPs) of
         true ->
             [GC|Cs2] = unicode_util:gc(Cs0),
             case lists:member(GC, GCs) of
                 true ->
-                    lexemes_m(Cs2, Seps, Ts);
+                    lexemes_m(Cs2, Seps0, Ts);
                 false ->
+                    Seps = search_compile(Seps0),
                     {Lexeme,Rest} = lexeme_pick(Cs0, Seps, []),
                     lexemes_m(Rest, Seps, [Lexeme|Ts])
             end;
         false ->
+            Seps = search_compile(Seps0),
             {Lexeme,Rest} = lexeme_pick(Cs0, Seps, []),
             lexemes_m(Rest, Seps, [Lexeme|Ts])
     end;
diff --git a/lib/stdlib/src/sys.erl b/lib/stdlib/src/sys.erl
index 0064414d6f..6ff9aa33b4 100644
--- a/lib/stdlib/src/sys.erl
+++ b/lib/stdlib/src/sys.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1996-2018. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2019. All Rights Reserved.
 %% 
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -30,22 +30,30 @@
 	 log_to_file/2, log_to_file/3, no_debug/1, no_debug/2,
 	 install/2, install/3, remove/2, remove/3]).
 -export([handle_system_msg/6, handle_system_msg/7, handle_debug/4,
-	 print_log/1, get_debug/3, debug_options/1, suspend_loop_hib/6]).
+	 print_log/1, get_log/1, get_debug/3, debug_options/1, suspend_loop_hib/6]).
+-deprecated([{get_debug,3,eventually}]).
 
 %%-----------------------------------------------------------------
 %% Types
 %%-----------------------------------------------------------------
 
--export_type([dbg_opt/0]).
+-export_type([dbg_opt/0, dbg_fun/0, debug_option/0]).
 
 -type name()         :: pid() | atom()
                       | {'global', term()}
                       | {'via', module(), term()}.
 -type system_event() :: {'in', Msg :: _}
-                      | {'in', Msg :: _, From :: _}
+                      | {'in', Msg :: _, State :: _}
                       | {'out', Msg :: _, To :: _}
                       | {'out', Msg :: _, To :: _, State :: _}
-                        | term().
+                      | {'noreply', State :: _}
+                      | {'continue', Continuation :: _}
+                      | {'code_change', Event :: _, State :: _}
+                      | {'postpone', Event :: _, State :: _, NextState :: _}
+                      | {'consume', Event :: _, State :: _, NextState :: _}
+                      | {'enter', State :: _}
+                      | {'terminate', Reason :: _, State :: _}
+                      | term().
 -opaque dbg_opt()    :: {'trace', 'true'}
                       | {'log',
                          {N :: non_neg_integer(),
@@ -67,6 +75,16 @@
 			     Event :: system_event(),
 			     Extra :: term()) -> any()).
 
+-type debug_option() ::
+        'trace'
+      | 'log'
+      | {'log', N :: pos_integer()}
+      | 'statistics'
+      | {'log_to_file', FileName :: file:name()}
+      | {'install',
+         {Func :: dbg_fun(), FuncState :: term()}
+         | {FuncId :: term(), Func :: dbg_fun(), FuncState :: term()}}.
+
 %%-----------------------------------------------------------------
 %% System messages
 %%-----------------------------------------------------------------
@@ -385,31 +403,41 @@ handle_system_msg(SysState, Msg, From, Parent, Mod, Debug, Misc, Hib) ->
       FormFunc :: format_fun(),
       Extra :: term(),
       Event :: system_event().
-handle_debug([{trace, true} | T], FormFunc, State, Event) ->
+handle_debug([{trace, true} = DbgOpt | T], FormFunc, State, Event) ->
     print_event({Event, State, FormFunc}),
-    [{trace, true} | handle_debug(T, FormFunc, State, Event)];
-handle_debug([{log, {N, LogData}} | T], FormFunc, State, Event) ->
-    NLogData = [{Event, State, FormFunc} | trim(N, LogData)],
-    [{log, {N, NLogData}} | handle_debug(T, FormFunc, State, Event)];
-handle_debug([{log_to_file, Fd} | T], FormFunc, State, Event) ->
+    [DbgOpt | handle_debug(T, FormFunc, State, Event)];
+handle_debug([{log, NLog} | T], FormFunc, State, Event) ->
+    Item = {Event, State, FormFunc},
+    [{log, nlog_put(Item, NLog)} | handle_debug(T, FormFunc, State, Event)];
+handle_debug([{log_to_file, Fd} = DbgOpt | T], FormFunc, State, Event) ->
     print_event(Fd, {Event, State, FormFunc}),
-    [{log_to_file, Fd} | handle_debug(T, FormFunc, State, Event)];
+    [DbgOpt | handle_debug(T, FormFunc, State, Event)];
 handle_debug([{statistics, StatData} | T], FormFunc, State, Event) ->
     NStatData = stat(Event, StatData),
     [{statistics, NStatData} | handle_debug(T, FormFunc, State, Event)];
 handle_debug([{FuncId, {Func, FuncState}} | T], FormFunc, State, Event) ->
-    case catch Func(FuncState, Event, State) of
+    try Func(FuncState, Event, State) of
+        done -> handle_debug(T, FormFunc, State, Event);
+        NFuncState ->
+            [{FuncId, {Func, NFuncState}} |
+             handle_debug(T, FormFunc, State, Event)]
+    catch
         done -> handle_debug(T, FormFunc, State, Event);
-        {'EXIT', _} -> handle_debug(T, FormFunc, State, Event);
         NFuncState ->
-            [{FuncId, {Func, NFuncState}} | handle_debug(T, FormFunc, State, Event)]
+            [{FuncId, {Func, NFuncState}} |
+             handle_debug(T, FormFunc, State, Event)];
+        _:_ -> handle_debug(T, FormFunc, State, Event)
     end;
 handle_debug([{Func, FuncState} | T], FormFunc, State, Event) ->
-    case catch Func(FuncState, Event, State) of
+    try Func(FuncState, Event, State) of
 	done -> handle_debug(T, FormFunc, State, Event);
-	{'EXIT', _} -> handle_debug(T, FormFunc, State, Event);
-	NFuncState ->		     
+	NFuncState ->
 	    [{Func, NFuncState} | handle_debug(T, FormFunc, State, Event)]
+    catch
+	done -> handle_debug(T, FormFunc, State, Event);
+	NFuncState ->
+	    [{Func, NFuncState} | handle_debug(T, FormFunc, State, Event)];
+        _:_ -> handle_debug(T, FormFunc, State, Event)
     end;
 handle_debug([], _FormFunc, _State, _Event) ->
     [].
@@ -526,19 +554,19 @@ debug_cmd({trace, true}, Debug) ->
 debug_cmd({trace, false}, Debug) ->
     {ok, remove_debug(trace, Debug)};
 debug_cmd({log, true}, Debug) ->
-    {_N, Logs} = get_debug(log, Debug, {0, []}),
-    {ok, install_debug(log, {10, trim(10, Logs)}, Debug)};
-debug_cmd({log, {true, N}}, Debug) when is_integer(N), N > 0 ->
-    {_N, Logs} = get_debug(log, Debug, {0, []}),
-    {ok, install_debug(log, {N, trim(N, Logs)}, Debug)};
+    NLog = get_debug(log, Debug, nlog_new()),
+    {ok, install_debug(log, nlog_new(NLog), Debug)};
+debug_cmd({log, {true, N}}, Debug) when is_integer(N), 1 =< N ->
+    NLog = get_debug(log, Debug, nlog_new(N)),
+    {ok, install_debug(log, nlog_new(N, NLog), Debug)};
 debug_cmd({log, false}, Debug) ->
     {ok, remove_debug(log, Debug)};
 debug_cmd({log, print}, Debug) ->
     print_log(Debug),
     {ok, Debug};
 debug_cmd({log, get}, Debug) ->
-    {_N, Logs} = get_debug(log, Debug, {0, []}),
-    {{ok, lists:reverse(Logs)}, Debug};
+    NLog = get_debug(log, Debug, nlog_new()),
+    {{ok, [Event || {Event, _State, _FormFunc} <- nlog_get(NLog)]}, Debug};
 debug_cmd({log_to_file, false}, Debug) ->
     NDebug = close_log_file(Debug),
     {ok, NDebug};
@@ -595,9 +623,6 @@ stat({out, _Msg, _To}, {Time, Reds, In, Out}) -> {Time, Reds, In, Out+1};
 stat({out, _Msg, _To, _State}, {Time, Reds, In, Out}) -> {Time, Reds, In, Out+1};
 stat(_, StatData) -> StatData.
 
-trim(N, LogData) ->
-    lists:sublist(LogData, 1, N-1).
-
 %%-----------------------------------------------------------------
 %% Debug structure manipulating functions
 %%-----------------------------------------------------------------
@@ -625,9 +650,14 @@ get_debug2(Item, Debug, Default) ->
 -spec print_log(Debug) -> 'ok' when
       Debug :: [dbg_opt()].
 print_log(Debug) ->
-    {_N, Logs} = get_debug(log, Debug, {0, []}),
-    lists:foreach(fun print_event/1,
-		  lists:reverse(Logs)).
+    NLog = get_debug(log, Debug, nlog_new()),
+    lists:foreach(fun print_event/1, nlog_get(NLog)).
+
+-spec get_log(Debug) -> [system_event()] when
+      Debug :: [dbg_opt()].
+get_log(Debug) ->
+    NLog = get_debug(log, Debug, nlog_new()),
+    [Event || {Event, _State, _FormFunc} <- nlog_get(NLog)].
     
 close_log_file(Debug) ->
     case get_debug2(log_to_file, Debug, []) of
@@ -639,6 +669,74 @@ close_log_file(Debug) ->
     end.
 
 %%-----------------------------------------------------------------
+%% Keep the last N Log functions
+%%-----------------------------------------------------------------
+%%
+%% Streamlined Okasaki queue as base for "keep the last N" log.
+%%
+%% To the reverse list head we cons new items.
+%% The forward list contains elements in insertion order,
+%% so the head is the oldest and the one to drop off
+%% when the log is full.
+%%
+%% Here is how we can get away with only using one cons cell
+%% to wrap the forward and reverse list, and the log size:
+%%
+%% A full log does not need a counter; we just cons one
+%% and drop one:
+%%
+%%     [ReverseList|ForwardList]
+%%
+%% A non-full log is filling up to N elements;
+%% use a down counter instead of a list as first element:
+%%
+%%     [RemainingToFullCount|ReverseList]
+
+nlog_new() ->
+    nlog_new(10).
+%%
+nlog_new([_|_] = NLog) ->
+    nlog_new(10, NLog);
+nlog_new(N) ->
+    [N]. % Empty log size N >= 1
+%%
+nlog_new(N, NLog) ->
+    lists:foldl(
+      fun (Item, NL) -> nlog_put(Item, NL) end,
+      nlog_new(N),
+      nlog_get(NLog)).
+
+%%
+nlog_put(Item, NLog) ->
+    case NLog of
+        [R|FF] when is_list(R) ->
+            %% Full log
+            case FF of
+                [_|F] ->
+                    %% Cons to reverse list, drop from forward list
+                    [[Item|R]|F];
+                [] ->
+                    %% Create new forward list from reverse list,
+                    %% create new empty reverse list
+                    [_|F] = lists:reverse(R, [Item]),
+                    [[]|F]
+            end;
+        [1|R] ->
+            %% Log now gets full
+            [[Item|R]];
+        [J|R] ->
+            %% Filling up to N elements
+            [J - 1,Item|R]
+    end.
+
+nlog_get([[]|F]) ->
+    F;
+nlog_get([[_|_] = R|F]) ->
+    F ++ lists:reverse(R);
+nlog_get([_J|R]) ->
+    lists:reverse(R).
+
+%%-----------------------------------------------------------------
 %% Func: debug_options/1
 %% Purpose: Initiate a debug structure.  Called by a process that
 %%          wishes to initiate the debug structure without the
@@ -646,28 +744,16 @@ close_log_file(Debug) ->
 %% Returns: [debug_opts()]
 %%-----------------------------------------------------------------
 
--spec debug_options(Options) -> [dbg_opt()] when
-      Options :: [Opt],
-      Opt :: 'trace'
-           | 'log'
-           | {'log', pos_integer()}
-           | 'statistics'
-           | {'log_to_file', FileName}
-           | {'install', FuncSpec},
-      FileName :: file:name(),
-      FuncSpec :: {Func, FuncState} | {FuncId, Func, FuncState},
-      FuncId :: term(),
-      Func :: dbg_fun(),
-      FuncState :: term().
+-spec debug_options([Opt :: debug_option()]) -> [dbg_opt()].
 debug_options(Options) ->
     debug_options(Options, []).
 
 debug_options([trace | T], Debug) ->
     debug_options(T, install_debug(trace, true, Debug));
 debug_options([log | T], Debug) ->
-    debug_options(T, install_debug(log, {10, []}, Debug));
+    debug_options(T, install_debug(log, nlog_new(), Debug));
 debug_options([{log, N} | T], Debug) when is_integer(N), N > 0 ->
-    debug_options(T, install_debug(log, {N, []}, Debug));
+    debug_options(T, install_debug(log, nlog_new(N), Debug));
 debug_options([statistics | T], Debug) ->
     debug_options(T, install_debug(statistics, init_stat(), Debug));
 debug_options([{log_to_file, FileName} | T], Debug) ->
diff --git a/lib/stdlib/src/uri_string.erl b/lib/stdlib/src/uri_string.erl
index f07307c039..d33dc89af8 100644
--- a/lib/stdlib/src/uri_string.erl
+++ b/lib/stdlib/src/uri_string.erl
@@ -415,7 +415,7 @@ transcode(URIString, Options) when is_list(URIString) ->
 %% (application/x-www-form-urlencoded encoding algorithm)
 %%-------------------------------------------------------------------------
 -spec compose_query(QueryList) -> QueryString when
-      QueryList :: [{unicode:chardata(), unicode:chardata()}],
+      QueryList :: [{unicode:chardata(), unicode:chardata() | true}],
       QueryString :: uri_string()
                    | error().
 compose_query(List) ->
@@ -423,7 +423,7 @@ compose_query(List) ->
 
 
 -spec compose_query(QueryList, Options) -> QueryString when
-      QueryList :: [{unicode:chardata(), unicode:chardata()}],
+      QueryList :: [{unicode:chardata(), unicode:chardata() | true}],
       Options :: [{encoding, atom()}],
       QueryString :: uri_string()
                    | error().
@@ -435,6 +435,11 @@ compose_query(List, Options) ->
       throw:{error, Atom, RestData} -> {error, Atom, RestData}
     end.
 %%
+compose_query([{Key,true}|Rest], Options, IsList, Acc) ->
+    Separator = get_separator(Rest),
+    K = form_urlencode(Key, Options),
+    IsListNew = IsList orelse is_list(Key),
+    compose_query(Rest, Options, IsListNew, <<Acc/binary,K/binary,Separator/binary>>);
 compose_query([{Key,Value}|Rest], Options, IsList, Acc) ->
     Separator = get_separator(Rest),
     K = form_urlencode(Key, Options),
@@ -454,7 +459,7 @@ compose_query([], _Options, IsList, Acc) ->
 %%-------------------------------------------------------------------------
 -spec dissect_query(QueryString) -> QueryList when
       QueryString :: uri_string(),
-      QueryList :: [{unicode:chardata(), unicode:chardata()}]
+      QueryList :: [{unicode:chardata(), unicode:chardata() | true}]
                  | error().
 dissect_query(<<>>) ->
     [];
@@ -1889,13 +1894,12 @@ dissect_query_key(<<$=,T/binary>>, IsList, Acc, Key, Value) ->
     dissect_query_value(T, IsList, Acc, Key, Value);
 dissect_query_key(<<"&#",T/binary>>, IsList, Acc, Key, Value) ->
     dissect_query_key(T, IsList, Acc, <<Key/binary,"&#">>, Value);
-dissect_query_key(<<$&,_T/binary>>, _IsList, _Acc, _Key, _Value) ->
-    throw({error, missing_value, "&"});
+dissect_query_key(T = <<$&,_/binary>>, IsList, Acc, Key, <<>>) ->
+    dissect_query_value(T, IsList, Acc, Key, true);
 dissect_query_key(<<H,T/binary>>, IsList, Acc, Key, Value) ->
     dissect_query_key(T, IsList, Acc, <<Key/binary,H>>, Value);
-dissect_query_key(B, _, _, _, _) ->
-    throw({error, missing_value, B}).
-
+dissect_query_key(T = <<>>, IsList, Acc, Key, <<>>) ->
+    dissect_query_value(T, IsList, Acc, Key, true).
 
 dissect_query_value(<<$&,T/binary>>, IsList, Acc, Key, Value) ->
     K = form_urldecode(IsList, Key),
@@ -1908,9 +1912,10 @@ dissect_query_value(<<>>, IsList, Acc, Key, Value) ->
     V = form_urldecode(IsList, Value),
     lists:reverse([{K,V}|Acc]).
 
-
 %% HTML 5.2 - 4.10.21.6 URL-encoded form data - WHATWG URL (10 Jan 2018) - UTF-8
 %% HTML 5.0 - 4.10.22.6 URL-encoded form data - decoding (non UTF-8)
+form_urldecode(_, true) ->
+    true;
 form_urldecode(true, B) ->
     Result = base10_decode(form_urldecode(B, <<>>)),
     convert_to_list(Result, utf8);
diff --git a/lib/stdlib/test/Makefile b/lib/stdlib/test/Makefile
index bbe3cefa42..712b1b92fb 100644
--- a/lib/stdlib/test/Makefile
+++ b/lib/stdlib/test/Makefile
@@ -99,11 +99,9 @@ MODULES= \
 	maps_SUITE \
 	zzz_SUITE
 
-ERL_FILES= $(MODULES:%=%.erl)
+ERTS_MODULES= erts_test_utils
 
-TARGET_FILES= $(MODULES:%=$(EBIN)/%.$(EMULATOR))
-
-INSTALL_PROGS= $(TARGET_FILES)
+ERL_FILES= $(MODULES:%=%.erl) $(ERTS_MODULES:%=$(ERL_TOP)/erts/emulator/test/%.erl)
 
 # ----------------------------------------------------
 # Release directory specification
@@ -128,7 +126,7 @@ COVERFILE=stdlib.cover
 # ----------------------------------------------------
 
 make_emakefile:
-	$(ERL_TOP)/make/make_emakefile $(ERL_COMPILE_FLAGS) -o$(EBIN) $(MODULES) \
+	$(ERL_TOP)/make/make_emakefile $(ERL_COMPILE_FLAGS) -o$(EBIN) $(MODULES) $(ERTS_MODULES) \
 	> $(EMAKEFILE)
 
 tests debug opt: make_emakefile
diff --git a/lib/stdlib/test/beam_lib_SUITE.erl b/lib/stdlib/test/beam_lib_SUITE.erl
index 6418dc7eb6..4b2694320e 100644
--- a/lib/stdlib/test/beam_lib_SUITE.erl
+++ b/lib/stdlib/test/beam_lib_SUITE.erl
@@ -35,7 +35,7 @@
 
 -export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1, 
 	 init_per_group/2,end_per_group/2, 
-	 normal/1, error/1, cmp/1, cmp_literals/1, strip/1, otp_6711/1,
+	 normal/1, error/1, cmp/1, cmp_literals/1, strip/1, strip_add_chunks/1, otp_6711/1,
          building/1, md5/1, encrypted_abstr/1, encrypted_abstr_file/1]).
 
 -export([init_per_testcase/2, end_per_testcase/2]).
@@ -45,7 +45,7 @@ suite() ->
      {timetrap,{minutes,2}}].
 
 all() -> 
-    [error, normal, cmp, cmp_literals, strip, otp_6711,
+    [error, normal, cmp, cmp_literals, strip, strip_add_chunks, otp_6711,
      building, md5, encrypted_abstr, encrypted_abstr_file].
 
 groups() -> 
@@ -401,6 +401,69 @@ strip(Conf) when is_list(Conf) ->
 		  Source5D1, BeamFile5D1]),
     ok.
 
+strip_add_chunks(Conf) when is_list(Conf) ->
+    PrivDir = ?privdir,
+    {SourceD1, BeamFileD1} = make_beam(PrivDir, simple, member),
+    {Source2D1, BeamFile2D1} = make_beam(PrivDir, simple2, concat),
+    {Source3D1, BeamFile3D1} = make_beam(PrivDir, make_fun, make_fun),
+    {Source4D1, BeamFile4D1} = make_beam(PrivDir, constant, constant),
+    {Source5D1, BeamFile5D1} = make_beam(PrivDir, lines, lines),
+
+    NoOfTables = erlang:system_info(ets_count),
+    P0 = pps(),
+
+    %% strip binary
+    verify(not_a_beam_file, beam_lib:strip(<<>>)),
+    {ok, B1} = file:read_file(BeamFileD1),
+    {ok, {simple, NB1}} = beam_lib:strip(B1),
+
+    BId1 = chunk_ids(B1),
+    NBId1 = chunk_ids(NB1),
+    true = length(BId1) > length(NBId1),
+    compare_chunks(B1, NB1, NBId1),
+
+    %% Keep all the extra chunks
+    ExtraChunks = ["Abst" , "Dbgi" , "Attr" , "CInf" , "LocT" , "Atom" ],
+    {ok, {simple, AB1}} = beam_lib:strip(B1, ExtraChunks),
+    ABId1 = chunk_ids(AB1),
+    true = length(BId1) == length(ABId1),
+    compare_chunks(B1, AB1, ABId1),
+
+    %% strip file - Keep extra chunks
+    verify(file_error, beam_lib:strip(foo)),
+    {ok, {simple, _}} = beam_lib:strip(BeamFileD1, ExtraChunks),
+    compare_chunks(B1, BeamFileD1, ABId1),
+
+    %% strip_files
+    {ok, B2} = file:read_file(BeamFile2D1),
+    {ok, [{simple,_},{simple2,_}]} = beam_lib:strip_files([B1, B2], ExtraChunks),
+    {ok, [{simple,_},{simple2,_},{make_fun,_},{constant,_}]} =
+	beam_lib:strip_files([BeamFileD1, BeamFile2D1, BeamFile3D1, BeamFile4D1], ExtraChunks),
+
+    %% check that each module can be loaded.
+    {module, simple} = code:load_abs(filename:rootname(BeamFileD1)),
+    {module, simple2} = code:load_abs(filename:rootname(BeamFile2D1)),
+    {module, make_fun} = code:load_abs(filename:rootname(BeamFile3D1)),
+    {module, constant} = code:load_abs(filename:rootname(BeamFile4D1)),
+
+    %% check that line number information is still present after stripping
+    {module, lines} = code:load_abs(filename:rootname(BeamFile5D1)),
+    {'EXIT',{badarith,[{lines,t,1,Info}|_]}} = (catch lines:t(atom)),
+    false = code:purge(lines),
+    true = code:delete(lines),
+    {ok, {lines,BeamFile5D1}} = beam_lib:strip(BeamFile5D1),
+    {module, lines} = code:load_abs(filename:rootname(BeamFile5D1)),
+    {'EXIT',{badarith,[{lines,t,1,Info}|_]}} = (catch lines:t(atom)),
+
+    true = (P0 == pps()),
+    NoOfTables = erlang:system_info(ets_count),
+
+    delete_files([SourceD1, BeamFileD1,
+		  Source2D1, BeamFile2D1,
+		  Source3D1, BeamFile3D1,
+		  Source4D1, BeamFile4D1,
+		  Source5D1, BeamFile5D1]),
+    ok.
 
 otp_6711(Conf) when is_list(Conf) ->
     {'EXIT',{function_clause,_}} = (catch {a, beam_lib:info(3)}),
@@ -729,6 +792,7 @@ make_beam(Dir, Module, F) ->
     FileBase = filename:join(Dir, atom_to_list(Module)),
     Source = FileBase ++ ".erl",
     BeamFile = FileBase ++ ".beam",
+    file:delete(BeamFile),
     simple_file(Source, Module, F),
     {ok, _} = compile:file(Source, [{outdir,Dir}, debug_info, report]),
     {Source, BeamFile}.
diff --git a/lib/stdlib/test/binary_module_SUITE.erl b/lib/stdlib/test/binary_module_SUITE.erl
index c5cfea5e9e..9b2033ec4a 100644
--- a/lib/stdlib/test/binary_module_SUITE.erl
+++ b/lib/stdlib/test/binary_module_SUITE.erl
@@ -22,7 +22,8 @@
 -export([all/0, suite/0,
 	 interesting/1,scope_return/1,random_ref_comp/1,random_ref_sr_comp/1,
 	 random_ref_fla_comp/1,parts/1, bin_to_list/1, list_to_bin/1,
-	 copy/1, referenced/1,guard/1,encode_decode/1,badargs/1,longest_common_trap/1]).
+	 copy/1, referenced/1,guard/1,encode_decode/1,badargs/1,longest_common_trap/1,
+         check_no_invalid_read_bug/1]).
 
 -export([random_number/1, make_unaligned/1]).
 
@@ -36,7 +37,7 @@ all() ->
     [scope_return,interesting, random_ref_fla_comp, random_ref_sr_comp,
      random_ref_comp, parts, bin_to_list, list_to_bin, copy,
      referenced, guard, encode_decode, badargs,
-     longest_common_trap].
+     longest_common_trap, check_no_invalid_read_bug].
 
 
 -define(MASK_ERROR(EXPR),mask_error((catch (EXPR)))).
@@ -754,8 +755,9 @@ list_to_bin(Config) when is_list(Config) ->
 copy(Config) when is_list(Config) ->
     <<1,2,3>> = binary:copy(<<1,2,3>>),
     RS = random_string({1,10000}),
-    RS = RS2 = binary:copy(RS),
-    false = erts_debug:same(RS,RS2),
+    RS2 = binary:copy(RS),
+    true = RS =:= RS2,
+    false = erts_debug:same(RS, RS2),
     <<>> = ?MASK_ERROR(binary:copy(<<1,2,3>>,0)),
     badarg = ?MASK_ERROR(binary:copy(<<1,2,3:3>>,2)),
     badarg = ?MASK_ERROR(binary:copy([],0)),
@@ -1361,3 +1363,13 @@ make_unaligned2(Bin0) when is_binary(Bin0) ->
     Bin.
 
 id(I) -> I.
+
+check_no_invalid_read_bug(Config) when is_list(Config) ->
+    check_no_invalid_read_bug(24);
+check_no_invalid_read_bug(60) ->
+    ok;
+check_no_invalid_read_bug(I) ->
+    N = 1 bsl I,
+    binary:encode_unsigned(N+N),
+    binary:encode_unsigned(N+N, little),
+    check_no_invalid_read_bug(I+1).
diff --git a/lib/stdlib/test/calendar_SUITE.erl b/lib/stdlib/test/calendar_SUITE.erl
index df62c0921d..224c0d5625 100644
--- a/lib/stdlib/test/calendar_SUITE.erl
+++ b/lib/stdlib/test/calendar_SUITE.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 1997-2018. All Rights Reserved.
+%% Copyright Ericsson AB 1997-2019. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -24,6 +24,7 @@
 -export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1, 
 	 init_per_group/2,end_per_group/2, 
 	 gregorian_days/1,
+	 big_gregorian_days/1,
 	 gregorian_seconds/1,
 	 day_of_the_week/1,
 	 day_of_the_week_calibrate/1,
@@ -36,13 +37,16 @@
 -define(START_YEAR, 1947).			
 -define(END_YEAR, 2012).
 
+-define(BIG_START_YEAR, 20000000).
+-define(BIG_END_YEAR, 20000020).
+
 suite() -> [{ct_hooks,[ts_install_cth]}].
 
 all() -> 
     [gregorian_days, gregorian_seconds, day_of_the_week,
      day_of_the_week_calibrate, leap_years,
      last_day_of_the_month, local_time_to_universal_time_dst,
-     iso_week_number, system_time, rfc3339].
+     iso_week_number, system_time, rfc3339, big_gregorian_days].
 
 groups() -> 
     [].
@@ -67,6 +71,14 @@ gregorian_days(Config) when is_list(Config) ->
     MaxDays = calendar:date_to_gregorian_days({?END_YEAR, 1, 1}),
     check_gregorian_days(Days, MaxDays).
 
+%% Tests that date_to_gregorian_days and gregorian_days_to_date
+%% are each others inverses from ?BIG_START_YEAR-01-01 up to ?BIG_END_YEAR-01-01.
+%% At the same time valid_date is tested.
+big_gregorian_days(Config) when is_list(Config) ->
+    Days = calendar:date_to_gregorian_days({?BIG_START_YEAR, 1, 1}),
+    MaxDays = calendar:date_to_gregorian_days({?BIG_END_YEAR, 1, 1}),
+    check_gregorian_days(Days, MaxDays).
+
 %% Tests that datetime_to_gregorian_seconds and
 %% gregorian_seconds_to_date are each others inverses for a sampled
 %% number of seconds from ?START_YEAR-01-01 up to ?END_YEAR-01-01: We check
diff --git a/lib/stdlib/test/epp_SUITE.erl b/lib/stdlib/test/epp_SUITE.erl
index 0ac99ad03a..a90beed4f3 100644
--- a/lib/stdlib/test/epp_SUITE.erl
+++ b/lib/stdlib/test/epp_SUITE.erl
@@ -1372,7 +1372,7 @@ otp_8562(Config) when is_list(Config) ->
 otp_8911(Config) when is_list(Config) ->
     case test_server:is_cover() of
 	true ->
-	    {skip, "Testing cover, so can not run when cover is already running"};
+	    {skip, "Testing cover, so cannot run when cover is already running"};
 	false ->
 	    do_otp_8911(Config)
     end.
diff --git a/lib/stdlib/test/erl_eval_SUITE.erl b/lib/stdlib/test/erl_eval_SUITE.erl
index f4019d477b..2436c8091c 100644
--- a/lib/stdlib/test/erl_eval_SUITE.erl
+++ b/lib/stdlib/test/erl_eval_SUITE.erl
@@ -1156,7 +1156,17 @@ simple() ->
     {A}.
 
 simple1() ->
-    erlang:error(simple).
+    %% If the compiler could see that this function would always
+    %% throw an error exception, it would rewrite simple() like this:
+    %%
+    %%   simple() -> simple1().
+    %%
+    %% That would change the stacktrace. To prevent the compiler from
+    %% doing that optimization, we must obfuscate the code.
+    case get(a_key_that_is_not_defined) of
+        undefined -> erlang:error(simple);
+        WillNeverHappen -> WillNeverHappen
+    end.
 
 %% Simple cases, just to cover some code.
 funs(Config) when is_list(Config) ->
diff --git a/lib/stdlib/test/erl_lint_SUITE.erl b/lib/stdlib/test/erl_lint_SUITE.erl
index d18c7c255c..e791da48cf 100644
--- a/lib/stdlib/test/erl_lint_SUITE.erl
+++ b/lib/stdlib/test/erl_lint_SUITE.erl
@@ -68,7 +68,7 @@
          non_latin1_module/1, otp_14323/1,
          stacktrace_syntax/1,
          otp_14285/1, otp_14378/1,
-         external_funs/1]).
+         external_funs/1,otp_15456/1]).
 
 suite() ->
     [{ct_hooks,[ts_install_cth]},
@@ -89,7 +89,8 @@ all() ->
      maps, maps_type, maps_parallel_match,
      otp_11851, otp_11879, otp_13230,
      record_errors, otp_11879_cont, non_latin1_module, otp_14323,
-     stacktrace_syntax, otp_14285, otp_14378, external_funs].
+     stacktrace_syntax, otp_14285, otp_14378, external_funs,
+     otp_15456].
 
 groups() -> 
     [{unused_vars_warn, [],
@@ -2119,6 +2120,61 @@ otp_5362(Config) when is_list(Config) ->
     [] = run(Config, Ts),
     ok.
 
+%% OTP-15456. All compiler options can now be given in the option list
+%% (as opposed to only in files).
+otp_15456(Config) when is_list(Config) ->
+    Ts = [
+          %% {nowarn_deprecated_function,[{M,F,A}]} can now be given
+          %% in the option list as well as in an attribute.
+          %% Wherever it occurs, it is not affected by
+          %% warn_deprecated_function.
+          {otp_15456_1,
+           <<"-compile({nowarn_deprecated_function,{erlang,now,0}}).
+              -export([foo/0]).
+
+              foo() ->
+                  {erlang:now(), random:seed0(), random:seed(1, 2, 3),
+                   random:uniform(), random:uniform(42)}.
+           ">>,
+           {[{nowarn_deprecated_function,{random,seed0,0}},
+             {nowarn_deprecated_function,[{random,uniform,0},
+                                          {random,uniform,1}]},
+             %% There should be no warnings when attempting to
+             %% turn of warnings for functions that are not
+             %% deprecated or not used in the module.
+             {nowarn_deprecated_function,{random,uniform_s,1}},
+             {nowarn_deprecated_function,{erlang,abs,1}},
+             warn_deprecated_function]},
+           {warnings,[{5,erl_lint,
+                       {deprecated,{random,seed,3},
+                        "the 'random' module is deprecated; "
+                        "use the 'rand' module instead"}}]}},
+
+          %% {nowarn_unused_function,[{M,F,A}]} can be given
+          %% in the option list as well as in an attribute.
+          %% It was incorrectly documented to only work when
+          %% given in an attribute.
+          {otp_15456_2,
+           <<"-compile({nowarn_unused_function,foo/0}).
+              foo() -> ok.
+              bar() -> ok.
+              foobar() -> ok.
+              barf(_) -> ok.
+              other() -> ok.
+           ">>,
+           {[{nowarn_unused_function,[{bar,0},{foobar,0}]},
+             {nowarn_unused_function,{barf,1}},
+             %% There should be no warnings when attempting to
+             %% turn of warnings for unused functions that are not
+             %% defined in the module.
+             {nowarn_unused_function,{not_defined_in_module,1}},
+             warn_unused_function]},
+           {warnings,[{6,erl_lint,{unused_function,{other,0}}}]}
+          }],
+
+    [] = run(Config, Ts),
+    ok.
+
 %% OTP-5371. Aliases for bit syntax expressions are no longer allowed.
 otp_5371(Config) when is_list(Config) ->
     Ts = [{otp_5371_1,
@@ -2731,7 +2787,7 @@ bif_clash(Config) when is_list(Config) ->
            [],
 	   {errors,[{2,erl_lint,{call_to_redefined_old_bif,{size,1}}}],[]}},
 
-	  %% Verify that warnings can not be turned off in the old way.
+	  %% Verify that warnings cannot be turned off in the old way.
 	  {clash2,
            <<"-export([t/1,size/1]).
               t(X) ->
diff --git a/lib/stdlib/test/erl_pp_SUITE.erl b/lib/stdlib/test/erl_pp_SUITE.erl
index dda8d0a12e..f5d80e7e68 100644
--- a/lib/stdlib/test/erl_pp_SUITE.erl
+++ b/lib/stdlib/test/erl_pp_SUITE.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2006-2018. All Rights Reserved.
+%% Copyright Ericsson AB 2006-2019. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -51,7 +51,7 @@
 	  otp_6321/1, otp_6911/1, otp_6914/1, otp_8150/1, otp_8238/1,
 	  otp_8473/1, otp_8522/1, otp_8567/1, otp_8664/1, otp_9147/1,
           otp_10302/1, otp_10820/1, otp_11100/1, otp_11861/1, pr_1014/1,
-          otp_13662/1, otp_14285/1]).
+          otp_13662/1, otp_14285/1, otp_15592/1]).
 
 %% Internal export.
 -export([ehook/6]).
@@ -81,7 +81,7 @@ groups() ->
       [otp_6321, otp_6911, otp_6914, otp_8150, otp_8238,
        otp_8473, otp_8522, otp_8567, otp_8664, otp_9147,
        otp_10302, otp_10820, otp_11100, otp_11861, pr_1014, otp_13662,
-       otp_14285]}].
+       otp_14285, otp_15592]}].
 
 init_per_suite(Config) ->
     Config.
@@ -1167,6 +1167,11 @@ otp_14285(_Config) ->
                                   [{encoding,latin1}])),
     ok.
 
+otp_15592(_Config) ->
+    ok = pp_expr(<<"long12345678901234567890123456789012345678901234"
+                   "56789012345678901234:f(<<>>)">>),
+    ok.
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 compile(Config, Tests) ->
diff --git a/lib/stdlib/test/ets_SUITE.erl b/lib/stdlib/test/ets_SUITE.erl
index aa2e352c29..87ca9bd32c 100644
--- a/lib/stdlib/test/ets_SUITE.erl
+++ b/lib/stdlib/test/ets_SUITE.erl
@@ -56,9 +56,11 @@
 -export([t_match_spec_run/1]).
 -export([t_bucket_disappears/1]).
 -export([t_named_select/1]).
+-export([select_fixtab_owner_change/1]).
 -export([otp_5340/1]).
 -export([otp_6338/1]).
 -export([otp_6842_select_1000/1]).
+-export([select_mbuf_trapping/1]).
 -export([otp_7665/1]).
 -export([meta_wb/1]).
 -export([grow_shrink/1, grow_pseudo_deleted/1, shrink_pseudo_deleted/1]).
@@ -66,7 +68,12 @@
 	 meta_lookup_named_read/1, meta_lookup_named_write/1,
 	 meta_newdel_unnamed/1, meta_newdel_named/1]).
 -export([smp_insert/1, smp_fixed_delete/1, smp_unfix_fix/1, smp_select_delete/1,
+         smp_ordered_iteration/1,
          smp_select_replace/1, otp_8166/1, otp_8732/1, delete_unfix_race/1]).
+-export([throughput_benchmark/0,
+         throughput_benchmark/1,
+         test_throughput_benchmark/1,
+         long_throughput_benchmark/1]).
 -export([exit_large_table_owner/1,
 	 exit_many_large_table_owner/1,
 	 exit_many_tables_owner/1,
@@ -89,6 +96,7 @@
 
 -include_lib("stdlib/include/ms_transform.hrl"). % ets:fun2ms
 -include_lib("common_test/include/ct.hrl").
+-include_lib("common_test/include/ct_event.hrl").
 
 -define(m(A,B), assert_eq(A,B)).
 -define(heap_binary_size, 64).
@@ -127,12 +135,14 @@ all() ->
      t_insert_list, t_test_ms, t_select_delete, t_select_replace,
      t_select_replace_next_bug,
      t_ets_dets, memory, t_select_reverse, t_bucket_disappears,
-     t_named_select,
+     t_named_select, select_fixtab_owner_change,
      select_fail, t_insert_new, t_repair_continuation,
      otp_5340, otp_6338, otp_6842_select_1000, otp_7665,
+     select_mbuf_trapping,
      otp_8732, meta_wb, grow_shrink, grow_pseudo_deleted,
      shrink_pseudo_deleted, {group, meta_smp}, smp_insert,
-     smp_fixed_delete, smp_unfix_fix, smp_select_replace, 
+     smp_fixed_delete, smp_unfix_fix, smp_select_replace,
+     smp_ordered_iteration,
      smp_select_delete, otp_8166, exit_large_table_owner,
      exit_many_large_table_owner, exit_many_tables_owner,
      exit_many_many_tables_owner, write_concurrency, heir,
@@ -144,7 +154,9 @@ all() ->
      massive_ets_all,
      take,
      whereis_table,
-     delete_unfix_race].
+     delete_unfix_race,
+     test_throughput_benchmark,
+     {group, benchmark}].
 
 groups() ->
     [{new, [],
@@ -172,7 +184,9 @@ groups() ->
      {meta_smp, [],
       [meta_lookup_unnamed_read, meta_lookup_unnamed_write,
        meta_lookup_named_read, meta_lookup_named_write,
-       meta_newdel_unnamed, meta_newdel_named]}].
+       meta_newdel_unnamed, meta_newdel_named]},
+     {benchmark, [],
+      [long_throughput_benchmark]}].
 
 init_per_suite(Config) ->
     erts_debug:set_internal_state(available_internal_state, true),
@@ -185,9 +199,61 @@ end_per_suite(_Config) ->
     catch erts_debug:set_internal_state(available_internal_state, false),
     ok.
 
+init_per_group(benchmark, Config) ->
+    P = self(),
+    %% Spawn owner of ETS table that is alive until end_per_group is run
+    EtsProcess =
+        spawn(
+          fun()->
+                  Tab = ets:new(ets_benchmark_result_summary_tab, [public]),
+                  P ! {the_table, Tab},
+                  receive
+                      kill -> ok
+                  end
+          end),
+    Tab = receive {the_table, T} -> T end,
+    CounterNames = [nr_of_benchmarks,
+                    total_throughput,
+                    nr_of_set_benchmarks,
+                    total_throughput_set,
+                    nr_of_ordered_set_benchmarks,
+                    total_throughput_ordered_set],
+    lists:foreach(fun(CtrName) ->
+                          ets:insert(Tab, {CtrName, 0.0})
+                  end,
+                  CounterNames),
+    [{ets_benchmark_result_summary_tab, Tab},
+     {ets_benchmark_result_summary_tab_process, EtsProcess} | Config];
 init_per_group(_GroupName, Config) ->
     Config.
 
+end_per_group(benchmark, Config) ->
+    T = proplists:get_value(ets_benchmark_result_summary_tab, Config),
+    EtsProcess = proplists:get_value(ets_benchmark_result_summary_tab_process, Config),
+    Report = 
+        fun(NOfBenchmarksCtr, TotThroughoutCtr, Name) ->
+                Average =
+                    ets:lookup_element(T, TotThroughoutCtr, 2) / 
+                    ets:lookup_element(T, NOfBenchmarksCtr, 2),
+                io:format("~p ~p~n", [Name, Average]),
+                ct_event:notify(
+                  #event{name = benchmark_data, 
+                         data = [{suite,"ets_bench"},
+                                 {name, Name},
+                                 {value, Average}]})
+        end,
+    Report(nr_of_benchmarks,
+           total_throughput,
+           "Average Throughput"),
+    Report(nr_of_set_benchmarks,
+           total_throughput_set,
+           "Average Throughput Set"),
+    Report(nr_of_ordered_set_benchmarks,
+           total_throughput_ordered_set,
+           "Average Throughput Ordered Set"),
+    ets:delete(T),
+    EtsProcess ! kill,
+    Config;
 end_per_group(_GroupName, Config) ->
     Config.
 
@@ -243,7 +309,64 @@ t_named_select_do(Opts) ->
     verify_etsmem(EtsMem).
 
 
+%% Verify select and friends release fixtab as they should
+%% even when owneship is changed between traps.
+select_fixtab_owner_change(_Config) ->
+    T = ets:new(xxx, [protected]),
+    NKeys = 2000,
+    [ets:insert(T,{K,K band 7}) || K <- lists:seq(1,NKeys)],
+
+    %% Buddy and Papa will ping-pong table ownership between them
+    %% and the aim is to give Buddy the table when he is
+    %% in the middle of a yielding select* call.
+    {Buddy,_} = spawn_opt(fun() -> sfoc_buddy_loop(T, 1, undefined) end,
+                          [link,monitor]),
+
+    sfoc_papa_loop(T, Buddy),
+
+    receive {'DOWN', _, process, Buddy, _} -> ok end,
+    ets:delete(T),
+    ok.
 
+sfoc_buddy_loop(T, I, State0) ->
+    receive
+        {'ETS-TRANSFER', T, Papa, _} ->
+            ets:give_away(T, Papa, State0),
+            case State0 of
+                done ->
+                    ok;
+                _ ->
+                    State1 = sfoc_traverse(T, I, State0),
+                    %% Verify no fixation left
+                    {I, false} = {I, ets:info(T, safe_fixed_monotonic_time)},
+                    sfoc_buddy_loop(T, I+1, State1)
+            end
+    end.
+
+sfoc_papa_loop(T, Buddy) ->
+    ets:give_away(T, Buddy, "Catch!"),
+    receive
+        {'ETS-TRANSFER', T, Buddy, State} ->
+            case State of
+                done ->
+                    ok;
+                _ ->
+                    sfoc_papa_loop(T, Buddy)
+            end
+    end.
+
+sfoc_traverse(T, 1, S) ->
+    ets:select(T, [{{'$1',7}, [], ['$1']}]), S;
+sfoc_traverse(T, 2, S) ->
+    0 = ets:select_count(T, [{{'$1',7}, [], [false]}]), S;
+sfoc_traverse(T, 3, _) ->
+    Limit = ets:info(T, size) div 2,
+    {_, Continuation} = ets:select(T, [{{'$1',7}, [], ['$1']}],
+                                   Limit),
+    Continuation;
+sfoc_traverse(_T, 4, Continuation) ->
+    _ = ets:select(Continuation),
+    done.
 
 %% Check ets:match_spec_run/2.
 t_match_spec_run(Config) when is_list(Config) ->
@@ -743,7 +866,7 @@ select_bound_chunk(_Config) ->
     repeat_for_opts(fun select_bound_chunk_do/1, [all_types]).
 
 select_bound_chunk_do(Opts) ->
-    T = ets:new(x, Opts),
+    T = ets_new(x, Opts),
     ets:insert(T, [{key, 1}]),
     {[{key, 1}], '$end_of_table'} = ets:select(T, [{{key,1},[],['$_']}], 100000),
     ok.
@@ -789,38 +912,42 @@ check_badarg({'EXIT', {badarg, [{M,F,A,_} | _]}}, M, F, Args)  ->
 %% Test ets:delete_all_objects/1.
 t_delete_all_objects(Config) when is_list(Config) ->
     EtsMem = etsmem(),
-    repeat_for_opts(fun t_delete_all_objects_do/1),
+    repeat_for_opts_all_set_table_types(fun t_delete_all_objects_do/1),
     verify_etsmem(EtsMem).
 
 get_kept_objects(T) ->
     case ets:info(T,stats) of
-	false ->
-	    0;
 	{_,_,_,_,_,_,KO}  ->
-	    KO
+	    KO;
+        _ ->
+            0
     end.
 
 t_delete_all_objects_do(Opts) ->
-    T=ets_new(x,Opts),
-    filltabint(T,4000),
+    KeyRange = 4000,
+    T=ets_new(x, Opts, KeyRange),
+    filltabint(T,KeyRange),
     O=ets:first(T),
     ets:next(T,O),
     ets:safe_fixtable(T,true),
     true = ets:delete_all_objects(T),
     '$end_of_table' = ets:next(T,O),
     0 = ets:info(T,size),
-    4000 = get_kept_objects(T),
+    case ets:info(T,type) of
+        ordered_set -> ok;
+        _ -> KeyRange = get_kept_objects(T)
+    end,
     ets:safe_fixtable(T,false),
     0 = ets:info(T,size),
     0 = get_kept_objects(T),
-    filltabint(T,4000),
-    4000 = ets:info(T,size),
+    filltabint(T, KeyRange),
+    KeyRange = ets:info(T,size),
     true = ets:delete_all_objects(T),
     0 = ets:info(T,size),
     ets:delete(T),
 
     %% Test delete_all_objects is atomic
-    T2 = ets:new(t_delete_all_objects, [public | Opts]),
+    T2 = ets_new(t_delete_all_objects, [public | Opts]),
     Self = self(),
     Inserters = [spawn_link(fun() -> inserter(T2, 100*1000, 1, Self) end) || _ <- [1,2,3,4]],
     [receive {Ipid, running} -> ok end || Ipid <- Inserters],
@@ -2372,17 +2499,29 @@ write_concurrency(Config) when is_list(Config) ->
     Yes6 = ets_new(foo,[duplicate_bag,protected,{write_concurrency,true}]),
     No3 = ets_new(foo,[duplicate_bag,private,{write_concurrency,true}]),
 
-    No4 = ets_new(foo,[ordered_set,public,{write_concurrency,true}]),
-    No5 = ets_new(foo,[ordered_set,protected,{write_concurrency,true}]),
-    No6 = ets_new(foo,[ordered_set,private,{write_concurrency,true}]),
-
-    No7 = ets_new(foo,[public,{write_concurrency,false}]),
-    No8 = ets_new(foo,[protected,{write_concurrency,false}]),
+    Yes7 = ets_new(foo,[ordered_set,public,{write_concurrency,true}]),
+    Yes8 = ets_new(foo,[ordered_set,protected,{write_concurrency,true}]),
+    Yes9 = ets_new(foo,[ordered_set,{write_concurrency,true}]),
+    Yes10 = ets_new(foo,[{write_concurrency,true},ordered_set,public]),
+    Yes11 = ets_new(foo,[{write_concurrency,true},ordered_set,protected]),
+    Yes12 = ets_new(foo,[set,{write_concurrency,false},
+                         {write_concurrency,true},ordered_set,public]),
+    Yes13 = ets_new(foo,[private,public,set,{write_concurrency,false},
+                         {write_concurrency,true},ordered_set]),
+    No4 = ets_new(foo,[ordered_set,private,{write_concurrency,true}]),
+    No5 = ets_new(foo,[ordered_set,public,{write_concurrency,false}]),
+    No6 = ets_new(foo,[ordered_set,protected,{write_concurrency,false}]),
+    No7 = ets_new(foo,[ordered_set,private,{write_concurrency,false}]),
+
+    No8 = ets_new(foo,[public,{write_concurrency,false}]),
+    No9 = ets_new(foo,[protected,{write_concurrency,false}]),
 
     YesMem = ets:info(Yes1,memory),
     NoHashMem = ets:info(No1,memory),
+    YesTreeMem = ets:info(Yes7,memory),
     NoTreeMem = ets:info(No4,memory),
-    io:format("YesMem=~p NoHashMem=~p NoTreeMem=~p\n",[YesMem,NoHashMem,NoTreeMem]),
+    io:format("YesMem=~p NoHashMem=~p NoTreeMem=~p YesTreeMem=~p\n",[YesMem,NoHashMem,
+                                                                     NoTreeMem,YesTreeMem]),
 
     YesMem = ets:info(Yes2,memory),
     YesMem = ets:info(Yes3,memory),
@@ -2391,13 +2530,24 @@ write_concurrency(Config) when is_list(Config) ->
     YesMem = ets:info(Yes6,memory),
     NoHashMem = ets:info(No2,memory),
     NoHashMem = ets:info(No3,memory),
+    YesTreeMem = ets:info(Yes7,memory),
+    YesTreeMem = ets:info(Yes8,memory),
+    YesTreeMem = ets:info(Yes9,memory),
+    YesTreeMem = ets:info(Yes10,memory),
+    YesTreeMem = ets:info(Yes11,memory),
+    YesTreeMem = ets:info(Yes12,memory),
+    YesTreeMem = ets:info(Yes13,memory),
+    NoTreeMem = ets:info(No4,memory),
     NoTreeMem = ets:info(No5,memory),
     NoTreeMem = ets:info(No6,memory),
-    NoHashMem = ets:info(No7,memory),
+    NoTreeMem = ets:info(No7,memory),
     NoHashMem = ets:info(No8,memory),
+    NoHashMem = ets:info(No9,memory),
 
     true = YesMem > NoHashMem,
     true = YesMem > NoTreeMem,
+    true = YesMem > YesTreeMem,
+    true = YesTreeMem < NoTreeMem,
 
     {'EXIT',{badarg,_}} = (catch ets_new(foo,[public,{write_concurrency,foo}])),
     {'EXIT',{badarg,_}} = (catch ets_new(foo,[public,{write_concurrency}])),
@@ -2405,8 +2555,8 @@ write_concurrency(Config) when is_list(Config) ->
     {'EXIT',{badarg,_}} = (catch ets_new(foo,[public,write_concurrency])),
 
     lists:foreach(fun(T) -> ets:delete(T) end,
-		  [Yes1,Yes2,Yes3,Yes4,Yes5,Yes6,
-		   No1,No2,No3,No4,No5,No6,No7,No8]),
+        	  [Yes1,Yes2,Yes3,Yes4,Yes5,Yes6,Yes7,Yes8,Yes9,Yes10,Yes11,Yes12,Yes13,
+        	   No1,No2,No3,No4,No5,No6,No7,No8,No9]),
     verify_etsmem(EtsMem),
     ok.
 
@@ -3051,41 +3201,43 @@ pick_all_backwards(T) ->
 %% Small test case for both set and bag type ets tables.
 setbag(Config) when is_list(Config) ->
     EtsMem = etsmem(),
-    Set = ets_new(set,[set]),
-    Bag = ets_new(bag,[bag]),
-    Key = {foo,bar},
-
-    %% insert some value
-    ets:insert(Set,{Key,val1}),
-    ets:insert(Bag,{Key,val1}),
-
-    %% insert new value for same key again
-    ets:insert(Set,{Key,val2}),
-    ets:insert(Bag,{Key,val2}),
-
-    %% check
-    [{Key,val2}] = ets:lookup(Set,Key),
-    [{Key,val1},{Key,val2}] = ets:lookup(Bag,Key),
-
-    true = ets:delete(Set),
-    true = ets:delete(Bag),
+    lists:foreach(fun(SetType) -> 
+                          Set = ets_new(SetType,[SetType]),
+                          Bag = ets_new(bag,[bag]),
+                          Key = {foo,bar},
+                          
+                          %% insert some value
+                          ets:insert(Set,{Key,val1}),
+                          ets:insert(Bag,{Key,val1}),
+                          
+                          %% insert new value for same key again
+                          ets:insert(Set,{Key,val2}),
+                          ets:insert(Bag,{Key,val2}),
+                          
+                          %% check
+                          [{Key,val2}] = ets:lookup(Set,Key),
+                          [{Key,val1},{Key,val2}] = ets:lookup(Bag,Key),
+                          
+                          true = ets:delete(Set),
+                          true = ets:delete(Bag)
+                  end, [set, cat_ord_set,stim_cat_ord_set,ordered_set]),
     verify_etsmem(EtsMem).
 
 %% Test case to check proper return values for illegal ets_new() calls.
 badnew(Config) when is_list(Config) ->
     EtsMem = etsmem(),
-    {'EXIT',{badarg,_}} = (catch ets_new(12,[])),
-    {'EXIT',{badarg,_}} = (catch ets_new({a,b},[])),
-    {'EXIT',{badarg,_}} = (catch ets_new(name,[foo])),
-    {'EXIT',{badarg,_}} = (catch ets_new(name,{bag})),
-    {'EXIT',{badarg,_}} = (catch ets_new(name,bag)),
+    {'EXIT',{badarg,_}} = (catch ets:new(12,[])),
+    {'EXIT',{badarg,_}} = (catch ets:new({a,b},[])),
+    {'EXIT',{badarg,_}} = (catch ets:new(name,[foo])),
+    {'EXIT',{badarg,_}} = (catch ets:new(name,{bag})),
+    {'EXIT',{badarg,_}} = (catch ets:new(name,bag)),
     verify_etsmem(EtsMem).
 
 %% OTP-2314. Test case to check that a non-proper list does not
 %% crash the emulator.
 verybadnew(Config) when is_list(Config) ->
     EtsMem = etsmem(),
-    {'EXIT',{badarg,_}} = (catch ets_new(verybad,[set|protected])),
+    {'EXIT',{badarg,_}} = (catch ets:new(verybad,[set|protected])),
     verify_etsmem(EtsMem).
 
 %% Small check to see if named tables work.
@@ -3101,11 +3253,13 @@ named(Config) when is_list(Config) ->
 %% Test case to check if specified keypos works.
 keypos2(Config) when is_list(Config) ->
     EtsMem = etsmem(),
-    Tab = make_table(foo,
-		     [set,{keypos,2}],
-		     [{val,key}, {val2,key}]),
-    [{val2,key}] = ets:lookup(Tab,key),
-    true = ets:delete(Tab),
+    lists:foreach(fun(SetType) -> 
+                          Tab = make_table(foo,
+                                           [SetType,{keypos,2}],
+                                           [{val,key}, {val2,key}]),
+                          [{val2,key}] = ets:lookup(Tab,key),
+                          true = ets:delete(Tab)
+                  end, [set, cat_ord_set,stim_cat_ord_set,ordered_set]),
     verify_etsmem(EtsMem).
 
 %% Privacy check. Check that a named(public/private/protected) table
@@ -3197,7 +3351,7 @@ rotate_tuple(Tuple, N) ->
 
 %% Check lookup in an empty table and lookup of a non-existing key.
 empty(Config) when is_list(Config) ->
-    repeat_for_opts(fun empty_do/1).
+    repeat_for_opts_all_table_types(fun empty_do/1).
 
 empty_do(Opts) ->
     EtsMem = etsmem(),
@@ -3210,7 +3364,7 @@ empty_do(Opts) ->
 
 %% Check proper return values for illegal insert operations.
 badinsert(Config) when is_list(Config) ->
-    repeat_for_opts(fun badinsert_do/1).
+    repeat_for_opts_all_table_types(fun badinsert_do/1).
 
 badinsert_do(Opts) ->
     EtsMem = etsmem(),
@@ -3234,7 +3388,7 @@ badinsert_do(Opts) ->
 time_lookup(Config) when is_list(Config) ->
     %% just for timing, really
     EtsMem = etsmem(),
-    Values = repeat_for_opts(fun time_lookup_do/1),
+    Values = repeat_for_opts_all_table_types(fun time_lookup_do/1),
     verify_etsmem(EtsMem),
     {comment,lists:flatten(io_lib:format(
 			     "~p ets lookups/s",[Values]))}.
@@ -3431,19 +3585,29 @@ delete_tab_do(Opts) ->
 
 %% Check that ets:delete/1 works and that other processes can run.
 delete_large_tab(Config) when is_list(Config) ->
-    ct:timetrap({minutes,30}), %% valgrind needs a lot
-    Data = [{erlang:phash2(I, 16#ffffff),I} || I <- lists:seq(1, 200000)],
+    ct:timetrap({minutes,60}), %% valgrind needs a lot
+    KeyRange = 16#ffffff,
+    Data = [{erlang:phash2(I, KeyRange),I} || I <- lists:seq(1, 200000)],
     EtsMem = etsmem(),
-    repeat_for_opts(fun(Opts) -> delete_large_tab_do(Opts,Data) end),
+    repeat_for_opts(fun(Opts) -> delete_large_tab_do(key_range(Opts,KeyRange),
+                                                     Data) end),
     verify_etsmem(EtsMem).
 
 delete_large_tab_do(Opts,Data) ->
     delete_large_tab_1(foo_hash, Opts, Data, false),
     delete_large_tab_1(foo_tree, [ordered_set | Opts], Data, false),
-    delete_large_tab_1(foo_hash, Opts, Data, true).
+    delete_large_tab_1(foo_tree, [stim_cat_ord_set | Opts], Data, false),
+    delete_large_tab_1(foo_hash_fix, Opts, Data, true).
 
 
 delete_large_tab_1(Name, Flags, Data, Fix) ->
+    case is_redundant_opts_combo(Flags) of
+        true -> skip;
+        false ->
+            delete_large_tab_2(Name, Flags, Data, Fix)
+    end.
+
+delete_large_tab_2(Name, Flags, Data, Fix) ->
     Tab = ets_new(Name, Flags),
     ets:insert(Tab, Data),
 
@@ -3502,18 +3666,30 @@ delete_large_tab_1(Name, Flags, Data, Fix) ->
 %% Delete a large name table and try to create a new table with
 %% the same name in another process.
 delete_large_named_table(Config) when is_list(Config) ->
-    Data = [{erlang:phash2(I, 16#ffffff),I} || I <- lists:seq(1, 200000)],
+    KeyRange = 16#ffffff,
+    Data = [{erlang:phash2(I, KeyRange),I} || I <- lists:seq(1, 200000)],
     EtsMem = etsmem(),
-    repeat_for_opts(fun(Opts) -> delete_large_named_table_do(Opts,Data) end),
+    repeat_for_opts(fun(Opts) ->
+                            delete_large_named_table_do(key_range(Opts,KeyRange),
+                                                        Data)
+                    end),
     verify_etsmem(EtsMem),
     ok.
 
 delete_large_named_table_do(Opts,Data) ->
     delete_large_named_table_1(foo_hash, [named_table | Opts], Data, false),
     delete_large_named_table_1(foo_tree, [ordered_set,named_table | Opts], Data, false),
+    delete_large_named_table_1(foo_tree, [stim_cat_ord_set,named_table | Opts], Data, false),
     delete_large_named_table_1(foo_hash, [named_table | Opts], Data, true).
 
 delete_large_named_table_1(Name, Flags, Data, Fix) ->
+    case is_redundant_opts_combo(Flags) of
+        true -> skip;
+        false ->
+            delete_large_named_table_2(Name, Flags, Data, Fix)
+    end.
+
+delete_large_named_table_2(Name, Flags, Data, Fix) ->
     Tab = ets_new(Name, Flags),
     ets:insert(Tab, Data),
 
@@ -3537,8 +3713,12 @@ delete_large_named_table_1(Name, Flags, Data, Fix) ->
 
 %% Delete a large table, and kill the process during the delete.
 evil_delete(Config) when is_list(Config) ->
-    Data = [{I,I*I} || I <- lists:seq(1, 100000)],
-    repeat_for_opts(fun(Opts) -> evil_delete_do(Opts,Data) end).
+    KeyRange = 100000,
+    Data = [{I,I*I} || I <- lists:seq(1, KeyRange)],
+    repeat_for_opts(fun(Opts) ->
+                            evil_delete_do(key_range(Opts,KeyRange),
+                                           Data)
+                    end).
 
 evil_delete_do(Opts,Data) ->
     EtsMem = etsmem(),
@@ -3548,16 +3728,27 @@ evil_delete_do(Opts,Data) ->
     verify_etsmem(EtsMem),
     evil_delete_owner(foo_tree, [ordered_set | Opts], Data, false),
     verify_etsmem(EtsMem),
+    evil_delete_owner(foo_catree, [stim_cat_ord_set | Opts], Data, false),
+    verify_etsmem(EtsMem),
     TabA = evil_delete_not_owner(foo_hash, Opts, Data, false),
     verify_etsmem(EtsMem),
     TabB = evil_delete_not_owner(foo_hash, Opts, Data, true),
     verify_etsmem(EtsMem),
     TabC = evil_delete_not_owner(foo_tree, [ordered_set | Opts], Data, false),
     verify_etsmem(EtsMem),
+    TabD = evil_delete_not_owner(foo_catree, [stim_cat_ord_set | Opts], Data, false),
+    verify_etsmem(EtsMem),
     lists:foreach(fun(T) -> undefined = ets:info(T) end,
-		  [TabA,TabB,TabC]).
+		  [TabA,TabB,TabC,TabD]).
 
 evil_delete_not_owner(Name, Flags, Data, Fix) ->
+    case is_redundant_opts_combo(Flags) of
+        true -> skip;
+        false ->
+            evil_delete_not_owner_1(Name, Flags, Data, Fix)
+    end.
+
+evil_delete_not_owner_1(Name, Flags, Data, Fix) ->
     io:format("Not owner: ~p, fix = ~p", [Name,Fix]),
     Tab = ets_new(Name, [public|Flags]),
     ets:insert(Tab, Data),
@@ -3583,6 +3774,13 @@ evil_delete_not_owner(Name, Flags, Data, Fix) ->
     Tab.
 
 evil_delete_owner(Name, Flags, Data, Fix) ->
+    case is_redundant_opts_combo(Flags) of
+        true -> skip;
+        false ->
+            evil_delete_owner_1(Name, Flags, Data, Fix)
+    end.
+
+evil_delete_owner_1(Name, Flags, Data, Fix) ->
     Fun = fun() ->
 		  Tab = ets_new(Name, [public|Flags]),
 		  ets:insert(Tab, Data),
@@ -3770,7 +3968,7 @@ verify_rescheduling_exit(Config, ForEachData, Flags, Fix, NOTabs, NOProcs) ->
 
 %% Make sure that slots for ets tables are cleared properly.
 table_leak(Config) when is_list(Config) ->
-    repeat_for_opts(fun(Opts) -> table_leak_1(Opts,20000) end).
+    repeat_for_opts_all_non_stim_table_types(fun(Opts) -> table_leak_1(Opts,20000) end).
 
 table_leak_1(_,0) -> ok;
 table_leak_1(Opts,N) ->
@@ -3833,7 +4031,7 @@ match_delete3_do(Opts) ->
 
 %% Test ets:first/1 & ets:next/2.
 firstnext(Config) when is_list(Config) ->
-    repeat_for_opts(fun firstnext_do/1).
+    repeat_for_opts_all_set_table_types(fun firstnext_do/1).
 
 firstnext_do(Opts) ->
     EtsMem = etsmem(),
@@ -3855,15 +4053,20 @@ firstnext_collect(Tab,Key,List) ->
 
 %% Tests ets:first/1 & ets:next/2.
 firstnext_concurrent(Config) when is_list(Config) ->
-    register(master, self()),
-    ets_init(?MODULE, 20),
-    [dynamic_go() || _ <- lists:seq(1, 2)],
-    receive
-    after 5000 -> ok
-    end.
+    lists:foreach(
+      fun(TableType) -> 
+              register(master, self()),
+              TableName = list_to_atom(atom_to_list(?MODULE) ++ atom_to_list(TableType)),
+              ets_init(TableName, 20, TableType),
+              [dynamic_go(TableName) || _ <- lists:seq(1, 2)],
+              receive
+              after 5000 -> ok
+              end,
+              unregister(master)
+      end, repeat_for_opts_atom2list(ord_set_types)).
 
-ets_init(Tab, N) ->
-    ets_new(Tab, [named_table,public,ordered_set]),
+ets_init(Tab, N, TableType) ->
+    ets_new(Tab, [named_table,public,TableType]),
     cycle(Tab, lists:seq(1,N+1)).
 
 cycle(_Tab, [H|T]) when H > length(T)-> ok;
@@ -3871,9 +4074,9 @@ cycle(Tab, L) ->
     ets:insert(Tab,list_to_tuple(L)),
     cycle(Tab, tl(L)++[hd(L)]).
 
-dynamic_go() -> my_spawn_link(fun dynamic_init/0).
+dynamic_go(TableName) -> my_spawn_link(fun() -> dynamic_init(TableName) end).
 
-dynamic_init() -> [dyn_lookup(?MODULE) || _ <- lists:seq(1, 10)].
+dynamic_init(TableName) -> [dyn_lookup(TableName) || _ <- lists:seq(1, 10)].
 
 dyn_lookup(T) -> dyn_lookup(T, ets:first(T)).
 
@@ -3891,7 +4094,7 @@ dyn_lookup(T, K) ->
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 slot(Config) when is_list(Config) ->
-    repeat_for_opts(fun slot_do/1).
+    repeat_for_opts_all_set_table_types(fun slot_do/1).
 
 slot_do(Opts) ->
     EtsMem = etsmem(),
@@ -3916,7 +4119,7 @@ slot_loop(Tab,SlotNo,EltsSoFar) ->
 
 
 match1(Config) when is_list(Config) ->
-    repeat_for_opts(fun match1_do/1).
+    repeat_for_opts_all_set_table_types(fun match1_do/1).
 
 match1_do(Opts) ->
     EtsMem = etsmem(),
@@ -3979,7 +4182,7 @@ match2_do(Opts) ->
 
 %% Some ets:match_object tests.
 match_object(Config) when is_list(Config) ->
-    repeat_for_opts(fun match_object_do/1).
+    repeat_for_opts_all_set_table_types(fun match_object_do/1).
 
 match_object_do(Opts) ->
     EtsMem = etsmem(),
@@ -4079,23 +4282,16 @@ match_object_do(Opts) ->
 %% Tests that db_match_object does not generate a `badarg' when
 %% resuming a search with no previous matches.
 match_object2(Config) when is_list(Config) ->
-    repeat_for_opts(fun match_object2_do/1).
+    repeat_for_opts_all_table_types(fun match_object2_do/1).
 
 match_object2_do(Opts) ->
     EtsMem = etsmem(),
-    Tab = ets_new(foo, [bag, {keypos, 2} | Opts]),
-    fill_tab2(Tab, 0, 13005),     % match_db_object does 1000
+    KeyRange = 13005,
+    Tab = ets_new(foo, [{keypos, 2} | Opts], KeyRange),
+    fill_tab2(Tab, 0, KeyRange),     % match_db_object does 1000
 						% elements per pass, might
 						% change in the future.
-    case catch ets:match_object(Tab, {hej, '$1'}) of
-	{'EXIT', _} ->
-	    ets:delete(Tab),
-	    ct:fail("match_object EXIT:ed");
-	[] ->
-	    io:format("Nothing matched.");
-	List ->
-	    io:format("Matched:~p~n",[List])
-    end,
+    [] = ets:match_object(Tab, {hej, '$1'}),
     ets:delete(Tab),
     verify_etsmem(EtsMem).
 
@@ -4104,18 +4300,21 @@ match_object2_do(Opts) ->
 
 %% OTP-3319. Test tab2list.
 tab2list(Config) when is_list(Config) ->
-    EtsMem = etsmem(),
-    Tab = make_table(foo,
-		     [ordered_set],
-		     [{a,b}, {c,b}, {b,b}, {a,c}]),
-    [{a,c},{b,b},{c,b}] = ets:tab2list(Tab),
-    true = ets:delete(Tab),
-    verify_etsmem(EtsMem).
+    repeat_for_all_ord_set_table_types(
+      fun(Opts) ->
+              EtsMem = etsmem(),
+              Tab = make_table(foo,
+                               Opts,
+                               [{a,b}, {c,b}, {b,b}, {a,c}]),
+              [{a,c},{b,b},{c,b}] = ets:tab2list(Tab),
+              true = ets:delete(Tab),
+              verify_etsmem(EtsMem)
+      end).
 
 %% Simple general small test.  If this fails, ets is in really bad
 %% shape.
 misc1(Config) when is_list(Config) ->
-    repeat_for_opts(fun misc1_do/1).
+    repeat_for_opts_all_table_types(fun misc1_do/1).
 
 misc1_do(Opts) ->
     EtsMem = etsmem(),
@@ -4133,7 +4332,7 @@ misc1_do(Opts) ->
 
 %% Check the safe_fixtable function.
 safe_fixtable(Config) when is_list(Config) ->
-    repeat_for_opts(fun safe_fixtable_do/1).
+    repeat_for_opts_all_table_types(fun safe_fixtable_do/1).
 
 safe_fixtable_do(Opts) ->
     EtsMem = etsmem(),
@@ -4191,10 +4390,42 @@ safe_fixtable_do(Opts) ->
 
 %% Tests ets:info result for required tuples.
 info(Config) when is_list(Config) ->
-    repeat_for_opts(fun info_do/1).
+    repeat_for_opts_all_table_types(fun info_do/1).
 
 info_do(Opts) ->
     EtsMem = etsmem(),
+    TableType = lists:foldl(
+                  fun(Item, Curr) -> 
+                          case Item of
+                              set -> set;
+                              ordered_set -> ordered_set;
+                              cat_ord_set -> ordered_set;
+                              stim_cat_ord_set -> ordered_set;
+                              bag -> bag;
+                              duplicate_bag -> duplicate_bag; 
+                              _ -> Curr
+                          end
+                  end, set, Opts),
+    PublicOrCurr =
+        fun(Curr) ->
+                case lists:member({write_concurrency, false}, Opts) or
+                    lists:member(private, Opts) or
+                    lists:member(protected, Opts) of
+                    true -> Curr;
+                    false -> public
+                end
+        end,
+    Protection = lists:foldl(
+                   fun(Item, Curr) ->
+                           case Item of
+                               public -> public;
+                               protected -> protected;
+                               private -> private;
+                               cat_ord_set -> PublicOrCurr(Curr); %% Special items
+                               stim_cat_ord_set -> PublicOrCurr(Curr);
+                               _ -> Curr
+                           end
+                   end, protected, Opts),
     MeMyselfI=self(),
     ThisNode=node(),
     Tab = ets_new(foobar, [{keypos, 2} | Opts]),
@@ -4208,9 +4439,9 @@ info_do(Opts) ->
     {value, {size, 0}} = lists:keysearch(size, 1, Res),
     {value, {node, ThisNode}} = lists:keysearch(node, 1, Res),
     {value, {named_table, false}} = lists:keysearch(named_table, 1, Res),
-    {value, {type, set}} = lists:keysearch(type, 1, Res),
+    {value, {type, TableType}} = lists:keysearch(type, 1, Res),
     {value, {keypos, 2}} = lists:keysearch(keypos, 1, Res),
-    {value, {protection, protected}} =
+    {value, {protection, Protection}} =
 	lists:keysearch(protection, 1, Res),
     {value, {id, Tab}} = lists:keysearch(id, 1, Res),
     true = ets:delete(Tab),
@@ -4255,20 +4486,29 @@ dups_do(Opts) ->
 %% Test the ets:tab2file function on an empty ets table.
 tab2file(Config) when is_list(Config) ->
     FName = filename:join([proplists:get_value(priv_dir, Config),"tab2file_case"]),
-    tab2file_do(FName, []),
-    tab2file_do(FName, [{sync,true}]),
-    tab2file_do(FName, [{sync,false}]),
-    {'EXIT',{{badmatch,{error,_}},_}} = (catch tab2file_do(FName, [{sync,yes}])),
-    {'EXIT',{{badmatch,{error,_}},_}} = (catch tab2file_do(FName, [sync])),
+    tab2file_do(FName, [], set),
+    tab2file_do(FName, [], ordered_set),
+    tab2file_do(FName, [], cat_ord_set),
+    tab2file_do(FName, [], stim_cat_ord_set),
+    tab2file_do(FName, [{sync,true}], set),
+    tab2file_do(FName, [{sync,false}], set),
+    {'EXIT',{{badmatch,{error,_}},_}} = (catch tab2file_do(FName, [{sync,yes}], set)),
+    {'EXIT',{{badmatch,{error,_}},_}} = (catch tab2file_do(FName, [sync], set)),
     ok.
 
-tab2file_do(FName, Opts) ->
+tab2file_do(FName, Opts, TableType) ->
     %% Write an empty ets table to a file, read back and check properties.
-    Tab = ets_new(ets_SUITE_foo_tab, [named_table, set, public,
+    Tab = ets_new(ets_SUITE_foo_tab, [named_table, TableType, public,
 				      {keypos, 2},
 				      compressed,
 				      {write_concurrency,true},
 				      {read_concurrency,true}]),
+    ActualTableType =
+        case TableType of
+            cat_ord_set -> ordered_set;
+            stim_cat_ord_set -> ordered_set;
+            _ -> TableType
+        end,
     catch file:delete(FName),
     Res = ets:tab2file(Tab, FName, Opts),
     true = ets:delete(Tab),
@@ -4279,7 +4519,7 @@ tab2file_do(FName, Opts) ->
     public = ets:info(Tab2, protection),
     true = ets:info(Tab2, named_table),
     2 = ets:info(Tab2, keypos),
-    set = ets:info(Tab2, type),
+    ActualTableType = ets:info(Tab2, type),
     true = ets:info(Tab2, compressed),
     Smp = erlang:system_info(smp_support),
     Smp = ets:info(Tab2, read_concurrency),
@@ -4292,14 +4532,15 @@ tab2file_do(FName, Opts) ->
 tab2file2(Config) when is_list(Config) ->
     repeat_for_opts(fun(Opts) ->
                             tab2file2_do(Opts, Config)
-                    end, [[set,bag],compressed]).
+                    end, [[stim_cat_ord_set,cat_ord_set,set,bag],compressed]).
 
 tab2file2_do(Opts, Config) ->
     EtsMem = etsmem(),
-    Tab = ets_new(ets_SUITE_foo_tab, [named_table, private,
-				      {keypos, 2} | Opts]),
+    KeyRange = 10000,
+    Tab = ets_new(ets_SUITE_foo_tab, [named_table, private, {keypos, 2} | Opts],
+                  KeyRange),
     FName = filename:join([proplists:get_value(priv_dir, Config),"tab2file2_case"]),
-    ok = fill_tab2(Tab, 0, 10000),   % Fill up the table (grucho mucho!)
+    ok = fill_tab2(Tab, 0, KeyRange),   % Fill up the table (grucho mucho!)
     Len = length(ets:tab2list(Tab)),
     Mem = ets:info(Tab, memory),
     Type = ets:info(Tab, type),
@@ -4353,13 +4594,14 @@ fill_tab2(Tab, Val, Num) ->
 
 %% Test verification of tables with object count extended_info.
 tabfile_ext1(Config) when is_list(Config) ->
-    repeat_for_opts(fun(Opts) -> tabfile_ext1_do(Opts, Config) end).
+    repeat_for_opts_all_set_table_types(fun(Opts) -> tabfile_ext1_do(Opts, Config) end).
 
 tabfile_ext1_do(Opts,Config) ->
     FName = filename:join([proplists:get_value(priv_dir, Config),"nisse.dat"]),
     FName2 = filename:join([proplists:get_value(priv_dir, Config),"countflip.dat"]),
-    L = lists:seq(1,10),
-    T = ets_new(x,Opts),
+    KeyRange = 10,
+    L = lists:seq(1,KeyRange),
+    T = ets_new(x,Opts,KeyRange),
     Name = make_ref(),
     [ets:insert(T,{X,integer_to_list(X)}) || X <- L],
     ok = ets:tab2file(T,FName,[{extended_info,[object_count]}]),
@@ -4391,13 +4633,14 @@ tabfile_ext1_do(Opts,Config) ->
 
 %% Test verification of tables with md5sum extended_info.
 tabfile_ext2(Config) when is_list(Config) ->
-    repeat_for_opts(fun(Opts) -> tabfile_ext2_do(Opts,Config) end).
+    repeat_for_opts_all_set_table_types(fun(Opts) -> tabfile_ext2_do(Opts,Config) end).
 
 tabfile_ext2_do(Opts,Config) ->
     FName = filename:join([proplists:get_value(priv_dir, Config),"olle.dat"]),
     FName2 = filename:join([proplists:get_value(priv_dir, Config),"bitflip.dat"]),
-    L = lists:seq(1,10),
-    T = ets_new(x,Opts),
+    KeyRange = 10,
+    L = lists:seq(1, KeyRange),
+    T = ets_new(x, Opts, KeyRange),
     Name = make_ref(),
     [ets:insert(T,{X,integer_to_list(X)}) || X <- L],
     ok = ets:tab2file(T,FName,[{extended_info,[md5sum]}]),
@@ -4428,71 +4671,77 @@ tabfile_ext2_do(Opts,Config) ->
 
 %% Test verification of (named) tables without extended info.
 tabfile_ext3(Config) when is_list(Config) ->
-    FName = filename:join([proplists:get_value(priv_dir, Config),"namn.dat"]),
-    FName2 = filename:join([proplists:get_value(priv_dir, Config),"ncountflip.dat"]),
-    L = lists:seq(1,10),
-    Name = make_ref(),
-    ?MODULE = ets_new(?MODULE,[named_table]),
-    [ets:insert(?MODULE,{X,integer_to_list(X)}) || X <- L],
-    ets:tab2file(?MODULE,FName),
-    {error,cannot_create_table} = ets:file2tab(FName),
-    true = ets:delete(?MODULE),
-    {ok,?MODULE} = ets:file2tab(FName),
-    true = ets:delete(?MODULE),
-    disk_log:open([{name,Name},{file,FName}]),
-    {_,[H2|T2]} = disk_log:chunk(Name,start),
-    disk_log:close(Name),
-    NewT2=lists:keydelete(8,1,T2),
-    file:delete(FName2),
-    disk_log:open([{name,Name},{file,FName2},{mode,read_write}]),
-    disk_log:log_terms(Name,[H2|NewT2]),
-    disk_log:close(Name),
-    9 = length(ets:tab2list(element(2,ets:file2tab(FName2)))),
-    true = ets:delete(?MODULE),
-    {error,invalid_object_count} = ets:file2tab(FName2,[{verify,true}]),
-    {'EXIT',_} = (catch ets:delete(?MODULE)),
-    {ok,_} = ets:tabfile_info(FName2),
-    {ok,_} = ets:tabfile_info(FName),
-    file:delete(FName),
-    file:delete(FName2),
+    repeat_for_all_set_table_types(
+      fun(Opts) ->
+              FName = filename:join([proplists:get_value(priv_dir, Config),"namn.dat"]),
+              FName2 = filename:join([proplists:get_value(priv_dir, Config),"ncountflip.dat"]),
+              L = lists:seq(1,10),
+              Name = make_ref(),
+              ?MODULE = ets_new(?MODULE,[named_table|Opts]),
+              [ets:insert(?MODULE,{X,integer_to_list(X)}) || X <- L],
+              ets:tab2file(?MODULE,FName),
+              {error,cannot_create_table} = ets:file2tab(FName),
+              true = ets:delete(?MODULE),
+              {ok,?MODULE} = ets:file2tab(FName),
+              true = ets:delete(?MODULE),
+              disk_log:open([{name,Name},{file,FName}]),
+              {_,[H2|T2]} = disk_log:chunk(Name,start),
+              disk_log:close(Name),
+              NewT2=lists:keydelete(8,1,T2),
+              file:delete(FName2),
+              disk_log:open([{name,Name},{file,FName2},{mode,read_write}]),
+              disk_log:log_terms(Name,[H2|NewT2]),
+              disk_log:close(Name),
+              9 = length(ets:tab2list(element(2,ets:file2tab(FName2)))),
+              true = ets:delete(?MODULE),
+              {error,invalid_object_count} = ets:file2tab(FName2,[{verify,true}]),
+              {'EXIT',_} = (catch ets:delete(?MODULE)),
+              {ok,_} = ets:tabfile_info(FName2),
+              {ok,_} = ets:tabfile_info(FName),
+              file:delete(FName),
+              file:delete(FName2)
+      end),
     ok.
 
 %% Tests verification of large table with md5 sum.
 tabfile_ext4(Config) when is_list(Config) ->
-    FName = filename:join([proplists:get_value(priv_dir, Config),"bauta.dat"]),
-    LL = lists:seq(1,10000),
-    TL = ets_new(x,[]),
-    Name2 = make_ref(),
-    [ets:insert(TL,{X,integer_to_list(X)}) || X <- LL],
-    ok = ets:tab2file(TL,FName,[{extended_info,[md5sum]}]),
-    {ok, Name2} = disk_log:open([{name, Name2}, {file, FName},
-				 {mode, read_only}]),
-    {C,[_|_]} = disk_log:chunk(Name2,start),
-    {_,[_|_]} = disk_log:chunk(Name2,C),
-    disk_log:close(Name2),
-    true = lists:sort(ets:tab2list(TL)) =:=
-	lists:sort(ets:tab2list(element(2,ets:file2tab(FName)))),
-    Res = [begin
-	       {ok,FD} = file:open(FName,[binary,read,write]),
-	       {ok, Bin} = file:pread(FD,0,1000),
-	       <<B1:N/binary,Ch:8,B2/binary>> = Bin,
-	       Ch2 = (Ch + 1) rem 255,
-	       Bin2 = <<B1/binary,Ch2:8,B2/binary>>,
-	       ok = file:pwrite(FD,0,Bin2),
-	       ok = file:close(FD),
-	       X = case ets:file2tab(FName) of
-		       {ok,TL2} ->
-			   true = lists:sort(ets:tab2list(TL)) =/=
-			       lists:sort(ets:tab2list(TL2));
-		       _ ->
-			   totally_broken
-		   end,
-	       {error,Y} = ets:file2tab(FName,[{verify,true}]),
-	       ets:tab2file(TL,FName,[{extended_info,[md5sum]}]),
-	       {X,Y}
-	   end || N <- lists:seq(500,600)],
-    io:format("~p~n",[Res]),
-    file:delete(FName),
+    repeat_for_all_set_table_types(
+      fun(Opts) ->
+              FName = filename:join([proplists:get_value(priv_dir, Config),"bauta.dat"]),
+              LL = lists:seq(1,10000),
+              TL = ets_new(x,Opts),
+              Name2 = make_ref(),
+              [ets:insert(TL,{X,integer_to_list(X)}) || X <- LL],
+              ok = ets:tab2file(TL,FName,[{extended_info,[md5sum]}]),
+              {ok, Name2} = disk_log:open([{name, Name2}, {file, FName},
+                                           {mode, read_only}]),
+              {C,[_|_]} = disk_log:chunk(Name2,start),
+              {_,[_|_]} = disk_log:chunk(Name2,C),
+              disk_log:close(Name2),
+              true = lists:sort(ets:tab2list(TL)) =:=
+                  lists:sort(ets:tab2list(element(2,ets:file2tab(FName)))),
+              Res = [begin
+                         {ok,FD} = file:open(FName,[binary,read,write]),
+                         {ok, Bin} = file:pread(FD,0,1000),
+                         <<B1:N/binary,Ch:8,B2/binary>> = Bin,
+                         Ch2 = (Ch + 1) rem 255,
+                         Bin2 = <<B1/binary,Ch2:8,B2/binary>>,
+                         ok = file:pwrite(FD,0,Bin2),
+                         ok = file:close(FD),
+                         X = case ets:file2tab(FName) of
+                                 {ok,TL2} ->
+                                     true = lists:sort(ets:tab2list(TL)) =/=
+                                         lists:sort(ets:tab2list(TL2));
+                                 _ ->
+                                     totally_broken
+                             end,
+                         {error,Y} = ets:file2tab(FName,[{verify,true}]),
+                         ets:tab2file(TL,FName,[{extended_info,[md5sum]}]),
+                         {X,Y}
+                     end || N <- lists:seq(500,600)],
+              io:format("~p~n",[Res]),
+              file:delete(FName)
+      end),
     ok.
 
 %% Test that no disk_log is left open when file has been corrupted.
@@ -4556,13 +4805,14 @@ make_sub_binary(List, Num) when is_list(List) ->
 
 %% Perform multiple lookups for every key in a large table.
 heavy_lookup(Config) when is_list(Config) ->
-    repeat_for_opts(fun heavy_lookup_do/1).
+    repeat_for_opts_all_set_table_types(fun heavy_lookup_do/1).
 
 heavy_lookup_do(Opts) ->
     EtsMem = etsmem(),
-    Tab = ets_new(foobar_table, [set, protected, {keypos, 2} | Opts]),
-    ok = fill_tab2(Tab, 0, 7000),
-    _ = [do_lookup(Tab, 6999) || _ <- lists:seq(1, 50)],
+    KeyRange = 7000,
+    Tab = ets_new(foobar_table, [{keypos, 2} | Opts], KeyRange),
+    ok = fill_tab2(Tab, 0, KeyRange),
+    _ = [do_lookup(Tab, KeyRange-1) || _ <- lists:seq(1, 50)],
     true = ets:delete(Tab),
     verify_etsmem(EtsMem).
 
@@ -4579,15 +4829,16 @@ do_lookup(Tab, N) ->
 
 %% Perform multiple lookups for every element in a large table.
 heavy_lookup_element(Config) when is_list(Config) ->
-    repeat_for_opts(fun heavy_lookup_element_do/1).
+    repeat_for_opts_all_set_table_types(fun heavy_lookup_element_do/1).
 
 heavy_lookup_element_do(Opts) ->
     EtsMem = etsmem(),
-    Tab = ets_new(foobar_table, [set, protected, {keypos, 2} | Opts]),
-    ok = fill_tab2(Tab, 0, 7000),
+    KeyRange = 7000,
+    Tab = ets_new(foobar_table, [{keypos, 2} | Opts], KeyRange),
+    ok = fill_tab2(Tab, 0, KeyRange),
     %% lookup ALL elements 50 times
     Laps = 50 div syrup_factor(),
-    _ = [do_lookup_element(Tab, 6999, 1) || _ <- lists:seq(1, Laps)],
+    _ = [do_lookup_element(Tab, KeyRange-1, 1) || _ <- lists:seq(1, Laps)],
     true = ets:delete(Tab),
     verify_etsmem(EtsMem).
 
@@ -4606,15 +4857,15 @@ do_lookup_element(Tab, N, M) ->
 
 
 heavy_concurrent(Config) when is_list(Config) ->
-    ct:timetrap({minutes,30}), %% valgrind needs a lot of time
-    repeat_for_opts(fun do_heavy_concurrent/1).
+    ct:timetrap({minutes,120}), %% valgrind needs a lot of time
+    repeat_for_opts_all_set_table_types(fun do_heavy_concurrent/1).
 
 do_heavy_concurrent(Opts) ->
-    Size = 10000,
+    KeyRange = 10000,
     Laps = 10000 div syrup_factor(),
     EtsMem = etsmem(),
-    Tab = ets_new(blupp, [set, public, {keypos, 2} | Opts]),
-    ok = fill_tab2(Tab, 0, Size),
+    Tab = ets_new(blupp, [public, {keypos, 2} | Opts], KeyRange),
+    ok = fill_tab2(Tab, 0, KeyRange),
     Procs = lists:map(
 	      fun (N) ->
 		      my_spawn_link(
@@ -4647,48 +4898,68 @@ do_heavy_concurrent_proc(Tab, N, Offs) ->
 
 
 fold_empty(Config) when is_list(Config) ->
-    EtsMem = etsmem(),
-    Tab = make_table(a, [], []),
-    [] = ets:foldl(fun(_X) -> exit(hej) end, [], Tab),
-    [] = ets:foldr(fun(_X) -> exit(hej) end, [], Tab),
-    true = ets:delete(Tab),
-    verify_etsmem(EtsMem).
+    repeat_for_opts_all_set_table_types(
+      fun(Opts) ->
+              EtsMem = etsmem(),
+              Tab = make_table(a, Opts, []),
+              [] = ets:foldl(fun(_X) -> exit(hej) end, [], Tab),
+              [] = ets:foldr(fun(_X) -> exit(hej) end, [], Tab),
+              true = ets:delete(Tab),
+              verify_etsmem(EtsMem)
+      end),
+    ok.
 
 foldl(Config) when is_list(Config) ->
-    EtsMem = etsmem(),
-    L = [{a,1}, {c,3}, {b,2}],
-    LS = lists:sort(L),
-    Tab = make_table(a, [bag], L),
-    LS = lists:sort(ets:foldl(fun(E,A) -> [E|A] end, [], Tab)),
-    true = ets:delete(Tab),
-    verify_etsmem(EtsMem).
+    repeat_for_opts_all_table_types(
+      fun(Opts) ->
+              EtsMem = etsmem(),
+              L = [{a,1}, {c,3}, {b,2}],
+              LS = lists:sort(L),
+              Tab = make_table(a, Opts, L),
+              LS = lists:sort(ets:foldl(fun(E,A) -> [E|A] end, [], Tab)),
+              true = ets:delete(Tab),
+              verify_etsmem(EtsMem)
+      end),
+    ok.
 
 foldr(Config) when is_list(Config) ->
-    EtsMem = etsmem(),
-    L = [{a,1}, {c,3}, {b,2}],
-    LS = lists:sort(L),
-    Tab = make_table(a, [bag], L),
-    LS = lists:sort(ets:foldr(fun(E,A) -> [E|A] end, [], Tab)),
-    true = ets:delete(Tab),
-    verify_etsmem(EtsMem).
+    repeat_for_opts_all_table_types(
+      fun(Opts) ->
+              EtsMem = etsmem(),
+              L = [{a,1}, {c,3}, {b,2}],
+              LS = lists:sort(L),
+              Tab = make_table(a, Opts, L),
+              LS = lists:sort(ets:foldr(fun(E,A) -> [E|A] end, [], Tab)),
+              true = ets:delete(Tab),
+              verify_etsmem(EtsMem)
+      end),
+    ok.
 
 foldl_ordered(Config) when is_list(Config) ->
-    EtsMem = etsmem(),
-    L = [{a,1}, {c,3}, {b,2}],
-    LS = lists:sort(L),
-    Tab = make_table(a, [ordered_set], L),
-    LS = lists:reverse(ets:foldl(fun(E,A) -> [E|A] end, [], Tab)),
-    true = ets:delete(Tab),
-    verify_etsmem(EtsMem).
+    repeat_for_opts_all_ord_set_table_types(
+      fun(Opts) ->
+              EtsMem = etsmem(),
+              L = [{a,1}, {c,3}, {b,2}],
+              LS = lists:sort(L),
+              Tab = make_table(a, Opts, L),
+              LS = lists:reverse(ets:foldl(fun(E,A) -> [E|A] end, [], Tab)),
+              true = ets:delete(Tab),
+              verify_etsmem(EtsMem)
+      end),
+    ok.
 
 foldr_ordered(Config) when is_list(Config) ->
-    EtsMem = etsmem(),
-    L = [{a,1}, {c,3}, {b,2}],
-    LS = lists:sort(L),
-    Tab = make_table(a, [ordered_set], L),
-    LS = ets:foldr(fun(E,A) -> [E|A] end, [], Tab),
-    true = ets:delete(Tab),
-    verify_etsmem(EtsMem).
+    repeat_for_opts_all_ord_set_table_types(
+      fun(Opts) ->
+              EtsMem = etsmem(),
+              L = [{a,1}, {c,3}, {b,2}],
+              LS = lists:sort(L),
+              Tab = make_table(a, Opts, L),
+              LS = ets:foldr(fun(E,A) -> [E|A] end, [], Tab),
+              true = ets:delete(Tab),
+              verify_etsmem(EtsMem)
+      end),
+    ok.
 
 %% Test ets:member BIF.
 member(Config) when is_list(Config) ->
@@ -4873,6 +5144,7 @@ filltabint(Tab,0) ->
 filltabint(Tab,N) ->
     ets:insert(Tab,{N,integer_to_list(N)}),
     filltabint(Tab,N-1).
+
 filltabint2(Tab,0) ->
     Tab;
 filltabint2(Tab,N) ->
@@ -5087,27 +5359,31 @@ gen_dets_filename(Config,N) ->
 		  "testdets_" ++ integer_to_list(N) ++ ".dets").
 
 otp_6842_select_1000(Config) when is_list(Config) ->
-    Tab = ets_new(xxx,[ordered_set]),
-    [ets:insert(Tab,{X,X}) || X <- lists:seq(1,10000)],
-    AllTrue = lists:duplicate(10,true),
-    AllTrue =
-	[ length(
-	    element(1,
-		    ets:select(Tab,[{'_',[],['$_']}],X*1000))) =:=
-	      X*1000 || X <- lists:seq(1,10) ],
-    Sequences = [[1000,1000,1000,1000,1000,1000,1000,1000,1000,1000],
-		 [2000,2000,2000,2000,2000],
-		 [3000,3000,3000,1000],
-		 [4000,4000,2000],
-		 [5000,5000],
-		 [6000,4000],
-		 [7000,3000],
-		 [8000,2000],
-		 [9000,1000],
-		 [10000]],
-    AllTrue = [ check_seq(Tab, ets:select(Tab,[{'_',[],['$_']}],hd(L)),L) ||
-		  L <- Sequences ],
-    ets:delete(Tab),
+    repeat_for_opts_all_ord_set_table_types(
+      fun(Opts) ->
+              KeyRange = 10000,
+              Tab = ets_new(xxx, Opts, KeyRange),
+              [ets:insert(Tab,{X,X}) || X <- lists:seq(1,KeyRange)],
+              AllTrue = lists:duplicate(10,true),
+              AllTrue =
+                  [ length(
+                      element(1,
+                              ets:select(Tab,[{'_',[],['$_']}],X*1000))) =:=
+                        X*1000 || X <- lists:seq(1,10) ],
+              Sequences = [[1000,1000,1000,1000,1000,1000,1000,1000,1000,1000],
+                           [2000,2000,2000,2000,2000],
+                           [3000,3000,3000,1000],
+                           [4000,4000,2000],
+                           [5000,5000],
+                           [6000,4000],
+                           [7000,3000],
+                           [8000,2000],
+                           [9000,1000],
+                           [10000]],
+              AllTrue = [ check_seq(Tab, ets:select(Tab,[{'_',[],['$_']}],hd(L)),L) ||
+                            L <- Sequences ],
+              ets:delete(Tab)
+      end),
     ok.
 
 check_seq(_,'$end_of_table',[]) ->
@@ -5119,17 +5395,76 @@ check_seq(A,B,C) ->
     false.
 
 otp_6338(Config) when is_list(Config) ->
-    L = binary_to_term(<<131,108,0,0,0,2,104,2,108,0,0,0,2,103,100,0,19,112,112,
-                         98,49,95,98,115,49,50,64,98,108,97,100,101,95,48,95,53,
-                         0,0,33,50,0,0,0,4,1,98,0,0,23,226,106,100,0,4,101,120,
-                         105,116,104,2,108,0,0,0,2,104,2,100,0,3,115,98,109,100,
-                         0,19,112,112,98,50,95,98,115,49,50,64,98,108,97,100,
-                         101,95,48,95,56,98,0,0,18,231,106,100,0,4,114,101,99,
-                         118,106>>),
-    T = ets_new(xxx,[ordered_set]),
-    lists:foreach(fun(X) -> ets:insert(T,X) end,L),
-    [[4839,recv]] = ets:match(T,{[{sbm,ppb2_bs12@blade_0_8},'$1'],'$2'}),
-    ets:delete(T).
+    repeat_for_opts_all_ord_set_table_types(
+      fun(Opts) ->
+              L = binary_to_term(<<131,108,0,0,0,2,104,2,108,0,0,0,2,103,100,0,19,112,112,
+                                   98,49,95,98,115,49,50,64,98,108,97,100,101,95,48,95,53,
+                                   0,0,33,50,0,0,0,4,1,98,0,0,23,226,106,100,0,4,101,120,
+                                   105,116,104,2,108,0,0,0,2,104,2,100,0,3,115,98,109,100,
+                                   0,19,112,112,98,50,95,98,115,49,50,64,98,108,97,100,
+                                   101,95,48,95,56,98,0,0,18,231,106,100,0,4,114,101,99,
+                                   118,106>>),
+              T = ets_new(xxx,Opts),
+              lists:foreach(fun(X) -> ets:insert(T,X) end,L),
+              [[4839,recv]] = ets:match(T,{[{sbm,ppb2_bs12@blade_0_8},'$1'],'$2'}),
+              ets:delete(T)
+      end),
+    ok.
+
+%% OTP-15660: Verify select not doing excessive trapping
+%%            when process have mbuf heap fragments.
+select_mbuf_trapping(Config) when is_list(Config) ->
+    select_mbuf_trapping_do(set),
+    select_mbuf_trapping_do(ordered_set).
+
+select_mbuf_trapping_do(Type) ->
+    T = ets:new(xxx, [Type]),
+    NKeys = 50,
+    [ets:insert(T, {K, value}) || K <- lists:seq(1,NKeys)],
+
+    {priority, Prio} = process_info(self(), priority),
+    Tracee = self(),
+    [SchedTracer]
+	= start_loopers(1, Prio,
+			fun (SC) ->
+				receive
+				    {trace, Tracee, out, _} ->
+					SC+1;
+				    done ->
+					Tracee ! {schedule_count, SC},
+                                        exit(normal)
+				end
+			end,
+			0),
+
+    erlang:garbage_collect(),
+    1 = erlang:trace(self(), true, [running,{tracer,SchedTracer}]),
+
+    %% Artificially create an mbuf heap fragment
+    MbufTerm = "Frag me up",
+    MbufTerm = erts_debug:set_internal_state(mbuf, MbufTerm),
+
+    Keys = ets:select(T, [{{'$1', value}, [], ['$1']}]),
+    NKeys = length(Keys),
+
+    1 = erlang:trace(self(), false, [running]),
+    Ref = erlang:trace_delivered(Tracee),
+    receive
+        {trace_delivered, Tracee, Ref} ->
+            SchedTracer ! done
+    end,
+    receive
+	{schedule_count, N} ->
+	    io:format("~p context switches: ~p", [Type,N]),
+	    if
+		N < 3 -> ok;
+		true -> ct:fail(failed)
+	    end
+    end,
+    true = ets:delete(T),
+    ok.
+
+
 
 %% Elements could come in the wrong order in a bag if a rehash occurred.
 otp_5340(Config) when is_list(Config) ->
@@ -5199,7 +5534,7 @@ otp_7665_act(Tab,Min,Max,DelNr) ->
 %% Whitebox testing of meta name table hashing.
 meta_wb(Config) when is_list(Config) ->
     EtsMem = etsmem(),
-    repeat_for_opts(fun meta_wb_do/1),
+    repeat_for_opts_all_non_stim_table_types(fun meta_wb_do/1),
     verify_etsmem(EtsMem).
 
 
@@ -5268,13 +5603,16 @@ colliding_names(Name) ->
 %% OTP_6913: Grow and shrink.
 
 grow_shrink(Config) when is_list(Config) ->
-    EtsMem = etsmem(),
-
-    Set = ets_new(a, [set]),
-    grow_shrink_0(0, 3071, 3000, 5000, Set),
-    ets:delete(Set),
-
-    verify_etsmem(EtsMem).
+    repeat_for_all_set_table_types(
+      fun(Opts) ->
+              EtsMem = etsmem(),
+              
+              Set = ets_new(a, Opts, 5000),
+              grow_shrink_0(0, 3071, 3000, 5000, Set),
+              ets:delete(Set),
+              
+              verify_etsmem(EtsMem)
+      end).
 
 grow_shrink_0(N, _, _, Max, _) when N >= Max ->
     ok;
@@ -5298,7 +5636,7 @@ grow_shrink_3(N, ShrinkTo, T) ->
     true = ets:delete(T, N),
     grow_shrink_3(N-1, ShrinkTo, T).
 
-%% Grow a table that still contains pseudo-deleted objects.
+%% Grow a hash table that still contains pseudo-deleted objects.
 grow_pseudo_deleted(Config) when is_list(Config) ->
     only_if_smp(fun() -> grow_pseudo_deleted_do() end).
 
@@ -5351,7 +5689,7 @@ grow_pseudo_deleted_do(Type) ->
     ets:delete(T),
     process_flag(scheduler,0).
 
-%% Shrink a table that still contains pseudo-deleted objects.
+%% Shrink a hash table that still contains pseudo-deleted objects.
 shrink_pseudo_deleted(Config) when is_list(Config) ->
     only_if_smp(fun()->shrink_pseudo_deleted_do() end).
 
@@ -5471,10 +5809,16 @@ meta_newdel_named(Config) when is_list(Config) ->
 
 %% Concurrent insert's on same table.
 smp_insert(Config) when is_list(Config) ->
-    ets_new(smp_insert,[named_table,public,{write_concurrency,true}]),
+    repeat_for_opts(fun smp_insert_do/1,
+                    [[set,ordered_set,stim_cat_ord_set]]).
+
+smp_insert_do(Opts) ->
+    KeyRange = 10000,
+    ets_new(smp_insert,[named_table,public,{write_concurrency,true}|Opts],
+            KeyRange),
     InitF = fun(_) -> ok end,
-    ExecF = fun(_) -> true = ets:insert(smp_insert,{rand:uniform(10000)})
-	    end,
+    ExecF = fun(_) -> true = ets:insert(smp_insert,{rand:uniform(KeyRange)})
+            end,
     FiniF = fun(_) -> ok end,
     run_smp_workers(InitF,ExecF,FiniF,100000),
     verify_table_load(smp_insert),
@@ -5482,7 +5826,7 @@ smp_insert(Config) when is_list(Config) ->
 
 %% Concurrent deletes on same fixated table.
 smp_fixed_delete(Config) when is_list(Config) ->
-    only_if_smp(fun()->smp_fixed_delete_do() end).
+    only_if_smp(fun() -> smp_fixed_delete_do() end).
 
 smp_fixed_delete_do() ->
     T = ets_new(foo,[public,{write_concurrency,true}]),
@@ -5493,17 +5837,20 @@ smp_fixed_delete_do() ->
     Buckets = num_of_buckets(T),
     InitF = fun([ProcN,NumOfProcs|_]) -> {ProcN,NumOfProcs} end,
     ExecF = fun({Key,_}) when Key > NumOfObjs ->
-		    [end_of_work];
-	       ({Key,Increment}) ->
-		    true = ets:delete(T,Key),
-		    {Key+Increment,Increment}
-	    end,
+                    [end_of_work];
+               ({Key,Increment}) ->
+                    true = ets:delete(T,Key),
+                    {Key+Increment,Increment}
+            end,
     FiniF = fun(_) -> ok end,
     run_sched_workers(InitF,ExecF,FiniF,NumOfObjs),
     0 = ets:info(T,size),
     true = ets:info(T,fixed),
     Buckets = num_of_buckets(T),
-    NumOfObjs = get_kept_objects(T),
+    case ets:info(T,type) of
+        set -> NumOfObjs = get_kept_objects(T);
+        _ -> ok
+    end,
     ets:safe_fixtable(T,false),
     %% Will fail as unfix does not shrink the table:
     %%Mem = ets:info(T,memory),
@@ -5551,7 +5898,12 @@ delete_unfix_race(Config) when is_list(Config) ->
     verify_etsmem(EtsMem).
 
 num_of_buckets(T) ->
-    element(1,ets:info(T,stats)).
+    case ets:info(T,type) of
+        set -> element(1,ets:info(T,stats));
+        bag -> element(1,ets:info(T,stats));
+        duplicate_bag -> element(1,ets:info(T,stats));
+        _ -> ok
+    end.
 
 %% Fixate hash table while other process is busy doing unfix.
 smp_unfix_fix(Config) when is_list(Config) ->
@@ -5716,106 +6068,126 @@ otp_8166_zombie_creator(T,Deleted) ->
 
 
 verify_table_load(T) ->
-    Stats = ets:info(T,stats),
-    {Buckets,AvgLen,StdDev,ExpSD,_MinLen,_MaxLen,_} = Stats,
-    ok = if
-	     AvgLen > 1.2 ->
-		 io:format("Table overloaded: Stats=~p\n~p\n",
-			   [Stats, ets:info(T)]),
-		 false;
-
-	     Buckets>256, AvgLen < 0.47 ->
-		 io:format("Table underloaded: Stats=~p\n~p\n",
-			   [Stats, ets:info(T)]),
-		 false;
-
-	     StdDev > ExpSD*2 ->
-		 io:format("Too large standard deviation (poor hashing?),"
-			   " stats=~p\n~p\n",[Stats, ets:info(T)]),
-		 false;
-
-	     true ->
-		 io:format("Stats = ~p\n",[Stats]),
-		 ok
-	 end.
+    case ets:info(T,type) of
+        ordered_set -> ok;
+        _ ->
+            Stats = ets:info(T,stats),
+            {Buckets,AvgLen,StdDev,ExpSD,_MinLen,_MaxLen,_} = Stats,
+            ok = if
+                     AvgLen > 1.2 ->
+                         io:format("Table overloaded: Stats=~p\n~p\n",
+                                   [Stats, ets:info(T)]),
+                         false;
+
+                     Buckets>256, AvgLen < 0.47 ->
+                         io:format("Table underloaded: Stats=~p\n~p\n",
+                                   [Stats, ets:info(T)]),
+                         false;
+
+                     StdDev > ExpSD*2 ->
+                         io:format("Too large standard deviation (poor hashing?),"
+                                   " stats=~p\n~p\n",[Stats, ets:info(T)]),
+                         false;
+
+                     true ->
+                         io:format("Stats = ~p\n",[Stats]),
+                         ok
+                 end
+    end.
 
 
 %% ets:select on a tree with NIL key object.
 otp_8732(Config) when is_list(Config) ->
-    Tab = ets_new(noname,[ordered_set]),
-    filltabstr(Tab,999),
-    ets:insert(Tab,{[],"nasty NIL object"}),
-    [] = ets:match(Tab,{'_',nomatch}), %% Will hang if bug not fixed
+    repeat_for_all_ord_set_table_types(
+      fun(Opts) ->
+              KeyRange = 999,
+              KeyFun = fun(K) -> integer_to_list(K) end,
+              Tab = ets_new(noname,Opts, KeyRange, KeyFun),
+              filltabstr(Tab, KeyRange),
+              ets:insert(Tab,{[],"nasty NIL object"}),
+              [] = ets:match(Tab,{'_',nomatch}) %% Will hang if bug not fixed
+      end),
     ok.
 
 
 %% Run concurrent select_delete (and inserts) on same table.
 smp_select_delete(Config) when is_list(Config) ->
-    T = ets_new(smp_select_delete,[named_table,public,{write_concurrency,true}]),
-    Mod = 17,
-    Zeros = erlang:make_tuple(Mod,0),
-    InitF = fun(_) -> Zeros end,
-    ExecF = fun(Diffs0) ->
-		    case rand:uniform(20) of
-			1 ->
-			    Mod = 17,
-			    Eq = rand:uniform(Mod) - 1,
-			    Deleted = ets:select_delete(T,
-							[{{'_', '$1'},
-							  [{'=:=', {'rem', '$1', Mod}, Eq}],
-							  [true]}]),
-			    Diffs1 = setelement(Eq+1, Diffs0,
-						element(Eq+1,Diffs0) - Deleted),
-			    Diffs1;
-			_ ->
-			    Key = rand:uniform(10000),
-			    Eq = Key rem Mod,
-			    case ets:insert_new(T,{Key,Key}) of
-				true ->
-				    Diffs1 = setelement(Eq+1, Diffs0,
-							element(Eq+1,Diffs0)+1),
-				    Diffs1;
-				false -> Diffs0
-			    end
-		    end
-	    end,
-    FiniF = fun(Result) -> Result end,
-    Results = run_sched_workers(InitF,ExecF,FiniF,20000),
-    TotCnts = lists:foldl(fun(Diffs, Sum) -> add_lists(Sum,tuple_to_list(Diffs)) end,
-			  lists:duplicate(Mod, 0), Results),
-    io:format("TotCnts = ~p\n",[TotCnts]),
-    LeftInTab = lists:foldl(fun(N,Sum) -> Sum+N end,
-			    0, TotCnts),
-    io:format("LeftInTab = ~p\n",[LeftInTab]),
-    LeftInTab = ets:info(T,size),
-    lists:foldl(fun(Cnt,Eq) ->
-			WasCnt = ets:select_count(T,
-						  [{{'_', '$1'},
-						    [{'=:=', {'rem', '$1', Mod}, Eq}],
-						    [true]}]),
-			io:format("~p: ~p =?= ~p\n",[Eq,Cnt,WasCnt]),
-			Cnt = WasCnt,
-			Eq+1
-		end,
-		0, TotCnts),
-    %% May fail as select_delete does not shrink table (enough)
-    %%verify_table_load(T),
-    LeftInTab = ets:select_delete(T, [{{'$1','$1'}, [], [true]}]),
-    0 = ets:info(T,size),
-    false = ets:info(T,fixed),
-    ets:delete(T).
+    repeat_for_opts(fun smp_select_delete_do/1,
+                    [[set,ordered_set,stim_cat_ord_set],
+                     read_concurrency, compressed]).
+
+smp_select_delete_do(Opts) ->
+    KeyRange = 10000,
+    begin % indentation
+              T = ets_new(smp_select_delete,[named_table,public,{write_concurrency,true}|Opts],
+                          KeyRange),
+              Mod = 17,
+              Zeros = erlang:make_tuple(Mod,0),
+              InitF = fun(_) -> Zeros end,
+              ExecF = fun(Diffs0) ->
+                              case rand:uniform(20) of
+                                  1 ->
+                                      Mod = 17,
+                                      Eq = rand:uniform(Mod) - 1,
+                                      Deleted = ets:select_delete(T,
+                                                                  [{{'_', '$1'},
+                                                                    [{'=:=', {'rem', '$1', Mod}, Eq}],
+                                                                    [true]}]),
+                                      Diffs1 = setelement(Eq+1, Diffs0,
+                                                          element(Eq+1,Diffs0) - Deleted),
+                                      Diffs1;
+                                  _ ->
+                                      Key = rand:uniform(KeyRange),
+                                      Eq = Key rem Mod,
+                                      case ets:insert_new(T,{Key,Key}) of
+                                          true ->
+                                              Diffs1 = setelement(Eq+1, Diffs0,
+                                                                  element(Eq+1,Diffs0)+1),
+                                              Diffs1;
+                                          false -> Diffs0
+                                      end
+                              end
+                      end,
+              FiniF = fun(Result) -> Result end,
+              Results = run_sched_workers(InitF,ExecF,FiniF,20000),
+              TotCnts = lists:foldl(fun(Diffs, Sum) -> add_lists(Sum,tuple_to_list(Diffs)) end,
+                                    lists:duplicate(Mod, 0), Results),
+              io:format("TotCnts = ~p\n",[TotCnts]),
+              LeftInTab = lists:foldl(fun(N,Sum) -> Sum+N end,
+                                      0, TotCnts),
+              io:format("LeftInTab = ~p\n",[LeftInTab]),
+              LeftInTab = ets:info(T,size),
+              lists:foldl(fun(Cnt,Eq) ->
+                                  WasCnt = ets:select_count(T,
+                                                            [{{'_', '$1'},
+                                                              [{'=:=', {'rem', '$1', Mod}, Eq}],
+                                                              [true]}]),
+                                  io:format("~p: ~p =?= ~p\n",[Eq,Cnt,WasCnt]),
+                                  Cnt = WasCnt,
+                                  Eq+1
+                          end,
+                          0, TotCnts),
+              %% May fail as select_delete does not shrink table (enough)
+              %%verify_table_load(T),
+              LeftInTab = ets:select_delete(T, [{{'$1','$1'}, [], [true]}]),
+              0 = ets:info(T,size),
+              false = ets:info(T,fixed),
+              ets:delete(T)
+    end, % indentation
+    ok.
 
 smp_select_replace(Config) when is_list(Config) ->
     repeat_for_opts(fun smp_select_replace_do/1,
-                    [[set,ordered_set,duplicate_bag]]).
+                    [[set,ordered_set,stim_cat_ord_set,duplicate_bag]]).
 
 smp_select_replace_do(Opts) ->
+    KeyRange = 20,
     T = ets_new(smp_select_replace,
-                [public, {write_concurrency, true} | Opts]),
-    ObjCount = 20,
+                [public, {write_concurrency, true} | Opts],
+                KeyRange),
     InitF = fun (_) -> 0 end,
     ExecF = fun (Cnt0) ->
-                    CounterId = rand:uniform(ObjCount),
+                    CounterId = rand:uniform(KeyRange),
                     Match = [{{'$1', '$2'},
                               [{'=:=', '$1', CounterId}],
                               [{{'$1', {'+', '$2', 1}}}]}],
@@ -5839,15 +6211,143 @@ smp_select_replace_do(Opts) ->
     FinalCounts = ets:select(T, [{{'_', '$1'}, [], ['$1']}]),
     Total = lists:sum(FinalCounts),
     Total = lists:sum(Results),
-    ObjCount = ets:select_delete(T, [{{'_', '_'}, [], [true]}]),
+    KeyRange = ets:select_delete(T, [{{'_', '_'}, [], [true]}]),
     0 = ets:info(T, size),
     true = ets:delete(T),
     ok.
 
+%% Iterate ordered_set with write_concurrency
+%% and make sure we hit all "stable" long lived keys
+%% while "volatile" objects are randomly inserted and deleted.
+smp_ordered_iteration(Config) when is_list(Config) ->
+    repeat_for_opts(fun smp_ordered_iteration_do/1,
+                    [[cat_ord_set,stim_cat_ord_set]]).
+
+
+smp_ordered_iteration_do(Opts) ->
+    KeyRange = 1000,
+    OffHeap = erts_test_utils:mk_ext_pid({a@b,1}, 4711, 1),
+    KeyFun = fun(K, Type) ->
+                     {K div 10, K rem 10, Type, OffHeap}
+             end,
+    StimKeyFun = fun(K) ->
+                         KeyFun(K, element(rand:uniform(3),
+                                           {stable, other, volatile}))
+                 end,
+    T = ets_new(smp_ordered_iteration, [public, {write_concurrency,true} | Opts],
+                KeyRange, StimKeyFun),
+    NStable = KeyRange div 4,
+    prefill_table(T, KeyRange, NStable, fun(K) -> {KeyFun(K, stable), 0} end),
+    NStable = ets:info(T, size),
+    NVolatile = KeyRange div 2,
+    prefill_table(T, KeyRange, NVolatile, fun(K) -> {KeyFun(K, volatile), 0} end),
+
+    InitF = fun (_) -> #{insert => 0, delete => 0,
+                         select_delete_bk => 0, select_delete_pbk => 0,
+                         select_replace_bk => 0, select_replace_pbk => 0}
+            end,
+    ExecF = fun (Counters) ->
+                    K = rand:uniform(KeyRange),
+                    Key = KeyFun(K, volatile),
+                    Acc = case rand:uniform(22) of
+                              R when R =< 10 ->
+                                  ets:insert(T, {Key}),
+                                  incr_counter(insert, Counters);
+                              R when R =< 15 ->
+                                  ets:delete(T, Key),
+                                  incr_counter(delete, Counters);
+                              R when R =< 19 ->
+                                  %% Delete bound key
+                                  ets:select_delete(T, [{{Key, '_'}, [], [true]}]),
+                                  incr_counter(select_delete_bk, Counters);
+                              R when R =< 20 ->
+                                  %% Delete partially bound key
+                                  ets:select_delete(T, [{{{K div 10, '_', volatile, '_'}, '_'}, [], [true]}]),
+                                  incr_counter(select_delete_pbk, Counters);
+                              R when R =< 21 ->
+                                  %% Replace bound key
+                                  ets:select_replace(T, [{{Key, '$1'}, [],
+                                                          [{{{const,Key}, {'+','$1',1}}}]}]),
+                                  incr_counter(select_replace_bk, Counters);
+                              _ ->
+                                  %% Replace partially bound key
+                                  ets:select_replace(T, [{{{K div 10, '_', volatile, '_'}, '$1'}, [],
+                                                          [{{{element,1,'$_'}, {'+','$1',1}}}]}]),
+                                  incr_counter(select_replace_pbk, Counters)
+                    end,
+                    receive stop ->
+                            [end_of_work | Acc]
+                    after 0 ->
+                            Acc
+                    end
+            end,
+    FiniF = fun (Acc) -> Acc end,
+    Pids = run_sched_workers(InitF, ExecF, FiniF, infinite),
+    timer:send_after(1000, stop),
+
+    Log2ChunkMax = math:log2(NStable*2),
+    Rounds = fun Loop(N) ->
+                     MS = [{{{'_', '_', stable, '_'}, '_'}, [], [true]}],
+                     NStable = ets:select_count(T, MS),
+                     NStable = count_stable(T, next, ets:first(T), 0),
+                     NStable = count_stable(T, prev, ets:last(T), 0),
+                     NStable = length(ets:select(T, MS)),
+                     NStable = length(ets:select_reverse(T, MS)),
+                     Chunk = round(math:pow(2, rand:uniform()*Log2ChunkMax)),
+                     NStable = ets_select_chunks_count(T, MS, Chunk),
+                     receive stop -> N
+                     after 0 -> Loop(N+1)
+                     end
+             end (1),
+    [P ! stop || P <- Pids],
+    Results = wait_pids(Pids),
+    io:format("Ops = ~p\n", [maps_sum(Results)]),
+    io:format("Diff = ~p\n", [ets:info(T,size) - NStable - NVolatile]),
+    io:format("Stats = ~p\n", [ets:info(T,stats)]),
+    io:format("Rounds = ~p\n", [Rounds]),
+    true = ets:delete(T),
+
+    %% Verify no leakage of offheap key data
+    ok = erts_test_utils:check_node_dist(),
+    ok.
+
+incr_counter(Name, Counters) ->
+    Counters#{Name => maps:get(Name, Counters, 0) + 1}.
+
+count_stable(T, Next, {_, _, stable, _}=Key, N) ->
+    count_stable(T, Next, ets:Next(T, Key), N+1);
+count_stable(T, Next, {_, _, volatile, _}=Key, N) ->
+    count_stable(T, Next, ets:Next(T, Key), N);
+count_stable(_, _, '$end_of_table', N) ->
+    N.
+
+ets_select_chunks_count(T, MS, Chunk) ->
+    ets_select_chunks_count(ets:select(T, MS, Chunk), 0).
+
+ets_select_chunks_count('$end_of_table', N) ->
+    N;
+ets_select_chunks_count({List, Continuation}, N) ->
+    ets_select_chunks_count(ets:select(Continuation),
+                           length(List) + N).
+
+maps_sum([Ma | Tail]) when is_map(Ma) ->
+    maps_sum([lists:sort(maps:to_list(Ma)) | Tail]);
+maps_sum([La, Mb | Tail]) ->
+    Lab = lists:zipwith(fun({K,Va}, {K,Vb}) -> {K,Va+Vb} end,
+                        La,
+                        lists:sort(maps:to_list(Mb))),
+    maps_sum([Lab | Tail]);
+maps_sum([L]) ->
+    L.
+
+
+
+
 %% Test different types.
 types(Config) when is_list(Config) ->
     init_externals(),
-    repeat_for_opts(fun types_do/1, [[set,ordered_set],compressed]).
+    repeat_for_opts(fun types_do/1, [repeat_for_opts_atom2list(set_types),
+                                     compressed]).
 
 types_do(Opts) ->
     EtsMem = etsmem(),
@@ -5874,7 +6374,7 @@ types_do(Opts) ->
 %% OTP-9932: Memory overwrite when inserting large integers in compressed bag.
 %% Will crash with segv on 64-bit opt if not fixed.
 otp_9932(Config) when is_list(Config) ->
-    T = ets:new(xxx, [bag, compressed]),
+    T = ets_new(xxx, [bag, compressed]),
     Fun = fun(N) ->
 		  Key = {1316110174588445 bsl N,1316110174588583 bsl N},
 		  S = {Key, Key},
@@ -5890,48 +6390,56 @@ otp_9932(Config) when is_list(Config) ->
 %% vm-deadlock caused by race between ets:delete and others on
 %% write_concurrency table.
 otp_9423(Config) when is_list(Config) ->
-    InitF = fun(_) -> {0,0} end,
-    ExecF = fun({S,F}) ->
-		    receive
-			stop ->
-			    io:format("~p got stop\n", [self()]),
-			    [end_of_work | {"Succeded=",S,"Failed=",F}]
-		    after 0 ->
-			    %%io:format("~p (~p) doing lookup\n", [self(), {S,F}]),
-			    try ets:lookup(otp_9423, key) of
-				[] -> {S+1,F}
-			    catch
-				error:badarg -> {S,F+1}
-			    end
-		    end
-	    end,
-    FiniF = fun(R) -> R end,
-    case run_smp_workers(InitF, ExecF, FiniF, infinite, 1) of
-	Pids when is_list(Pids) ->
-	    %%[P ! start || P <- Pids],
-	    repeat(fun() -> ets:new(otp_9423, [named_table, public, {write_concurrency,true}]),
-			    ets:delete(otp_9423)
-		   end, 10000),
-	    [P ! stop || P <- Pids],
-	    wait_pids(Pids),
-	    ok;
+    repeat_for_all_non_stim_set_table_types(
+      fun(Opts) ->
+              InitF = fun(_) -> {0,0} end,
+              ExecF = fun({S,F}) ->
+                              receive
+                                  stop ->
+                                      io:format("~p got stop\n", [self()]),
+                                      [end_of_work | {"Succeded=",S,"Failed=",F}]
+                              after 0 ->
+                                      %%io:format("~p (~p) doing lookup\n", [self(), {S,F}]),
+                                      try ets:lookup(otp_9423, key) of
+                                          [] -> {S+1,F}
+                                      catch
+                                          error:badarg -> {S,F+1}
+                                      end
+                              end
+                      end,
+              FiniF = fun(R) -> R end,
+              case run_smp_workers(InitF, ExecF, FiniF, infinite, 1) of
+                  Pids when is_list(Pids) ->
+                      %%[P ! start || P <- Pids],
+                      repeat(fun() -> ets_new(otp_9423, [named_table, public, 
+                                                         {write_concurrency,true}|Opts]),
+                                      ets:delete(otp_9423)
+                             end, 10000),
+                      [P ! stop || P <- Pids],
+                      wait_pids(Pids),
+                      ok;
+
+                  Skipped -> Skipped
+              end
+      end).
 
-	Skipped -> Skipped
-    end.
 
 
 %% Corrupted binary in compressed table
 otp_10182(Config) when is_list(Config) ->
-    Bin = <<"aHR0cDovL2hvb3RzdWl0ZS5jb20vYy9wcm8tYWRyb2xsLWFi">>,
-    Key = {test, Bin},
-    Value = base64:decode(Bin),
-    In = {Key,Value},
-    Db = ets:new(undefined, [set, protected, {read_concurrency, true}, compressed]),
-    ets:insert(Db, In),
-    [Out] = ets:lookup(Db, Key),
-    io:format("In :  ~p\nOut: ~p\n", [In,Out]),
-    ets:delete(Db),
-    In = Out.
+    repeat_for_opts_all_table_types(
+      fun(Opts) -> 
+              Bin = <<"aHR0cDovL2hvb3RzdWl0ZS5jb20vYy9wcm8tYWRyb2xsLWFi">>,
+              Key = {test, Bin},
+              Value = base64:decode(Bin),
+              In = {Key,Value},
+              Db = ets_new(undefined, Opts),
+              ets:insert(Db, In),
+              [Out] = ets:lookup(Db, Key),
+              io:format("In :  ~p\nOut: ~p\n", [In,Out]),
+              ets:delete(Db),
+              In = Out
+      end).
 
 %% Test that ets:all include/exclude tables that we know are created/deleted
 ets_all(Config) when is_list(Config) ->
@@ -6022,19 +6530,23 @@ take(Config) when is_list(Config) ->
     ets:insert(T1, {{'not',<<"immediate">>},ok}),
     [{{'not',<<"immediate">>},ok}] = ets:take(T1, {'not',<<"immediate">>}),
     %% Same with ordered tables.
-    T2 = ets_new(b, [ordered_set]),
-    [] = ets:take(T2, foo),
-    ets:insert(T2, {foo,bar}),
-    [] = ets:take(T2, bar),
-    [{foo,bar}] = ets:take(T2, foo),
-    [] = ets:tab2list(T2),
-    ets:insert(T2, {{'not',<<"immediate">>},ok}),
-    [{{'not',<<"immediate">>},ok}] = ets:take(T2, {'not',<<"immediate">>}),
-    %% Arithmetically-equal keys.
-    ets:insert(T2, [{1.0,float},{2,integer}]),
-    [{1.0,float}] = ets:take(T2, 1),
-    [{2,integer}] = ets:take(T2, 2.0),
-    [] = ets:tab2list(T2),
+    repeat_for_all_ord_set_table_types(
+      fun(Opts) ->
+              T2 = ets_new(b, Opts),
+              [] = ets:take(T2, foo),
+              ets:insert(T2, {foo,bar}),
+              [] = ets:take(T2, bar),
+              [{foo,bar}] = ets:take(T2, foo),
+              [] = ets:tab2list(T2),
+              ets:insert(T2, {{'not',<<"immediate">>},ok}),
+              [{{'not',<<"immediate">>},ok}] = ets:take(T2, {'not',<<"immediate">>}),
+              %% Arithmetically-equal keys.
+              ets:insert(T2, [{1.0,float},{2,integer}]),
+              [{1.0,float}] = ets:take(T2, 1),
+              [{2,integer}] = ets:take(T2, 2.0),
+              [] = ets:tab2list(T2),
+              ets:delete(T2)
+      end),
     %% Same with bag.
     T3 = ets_new(c, [bag]),
     ets:insert(T3, [{1,1},{1,2},{3,3}]),
@@ -6042,7 +6554,6 @@ take(Config) when is_list(Config) ->
     [{3,3}] = ets:take(T3, 3),
     [] = ets:tab2list(T3),
     ets:delete(T1),
-    ets:delete(T2),
     ets:delete(T3),
     ok.
 
@@ -6077,9 +6588,518 @@ whereis_table(Config) when is_list(Config) ->
 
     ok.
 
-%%
-%% Utility functions:
-%%
+
+%% The following help functions are used by
+%% throughput_benchmark. They are declared on the top level beacuse
+%% declaring them as function local funs cause a scalability issue.
+get_op([{_,O}], _RandNum) ->
+    O;
+get_op([{Prob,O}|Rest], RandNum) ->
+    case RandNum < Prob of
+        true -> O;
+        false -> get_op(Rest, RandNum)
+    end.
+do_op(Table, ProbHelpTab, Range, Operations) ->
+    RandNum = rand:uniform(),
+    Op = get_op(ProbHelpTab, RandNum),
+    #{ Op := TheOp} = Operations,
+    TheOp(Table, Range).
+do_work(WorksDoneSoFar, Table, ProbHelpTab, Range, Operations) ->
+    receive
+        stop -> WorksDoneSoFar
+    after
+        0 -> do_op(Table, ProbHelpTab, Range, Operations),
+             do_work(WorksDoneSoFar + 1, Table, ProbHelpTab, Range, Operations)
+    end.
+
+prefill_table(T, KeyRange, Num, ObjFun) ->
+    Seed = rand:uniform(KeyRange),
+    %%io:format("prefill_table: Seed = ~p\n", [Seed]),
+    RState = unique_rand_start(KeyRange, Seed),
+    prefill_table_loop(T, RState, Num, ObjFun).
+
+prefill_table_loop(_, _, 0, _) ->
+    ok;
+prefill_table_loop(T, RS0, N, ObjFun) ->
+    {Key, RS1} = unique_rand_next(RS0),
+    ets:insert(T, ObjFun(Key)),
+    prefill_table_loop(T, RS1, N-1, ObjFun).
+
+-record(ets_throughput_bench_config,
+        {benchmark_duration_ms = 3000,
+         recover_time_ms = 1000,
+         thread_counts = not_set,
+         key_ranges = [1000000],
+         scenarios =
+             [
+              [
+               {0.5, insert},
+               {0.5, delete}
+              ],
+              [
+               {0.1, insert},
+               {0.1, delete},
+               {0.8, lookup}
+              ],
+              [
+               {0.01, insert},
+               {0.01, delete},
+               {0.98, lookup}
+              ],
+              [
+               {1.0, lookup}
+              ],
+              [
+               {0.1, insert},
+               {0.1, delete},
+               {0.4, lookup},
+               {0.4, nextseq10}
+              ],
+              [
+               {0.1, insert},
+               {0.1, delete},
+               {0.4, lookup},
+               {0.4, nextseq100}
+              ],
+              [
+               {0.1, insert},
+               {0.1, delete},
+               {0.4, lookup},
+               {0.4, nextseq1000}
+              ],
+              [
+               {1.0, nextseq1000}
+              ],
+              [
+               {0.1, insert},
+               {0.1, delete},
+               {0.79, lookup},
+               {0.01, selectAll}
+              ],
+              [
+               {0.1, insert},
+               {0.1, delete},
+               {0.7999, lookup},
+               {0.0001, selectAll}
+              ],
+              [
+               {0.1, insert},
+               {0.1, delete},
+               {0.799999, lookup},
+               {0.000001, selectAll}
+              ],
+              [
+               {0.1, insert},
+               {0.1, delete},
+               {0.79, lookup},
+               {0.01, partial_select1000}
+              ],
+              [
+               {0.1, insert},
+               {0.1, delete},
+               {0.7999, lookup},
+               {0.0001, partial_select1000}
+              ],
+              [
+               {0.1, insert},
+               {0.1, delete},
+               {0.799999, lookup},
+               {0.000001, partial_select1000}
+              ]
+             ],
+         table_types =
+             [
+              [ordered_set, public],
+              [ordered_set, public, {write_concurrency, true}],
+              [ordered_set, public, {read_concurrency, true}],
+              [ordered_set, public, {write_concurrency, true}, {read_concurrency, true}],
+              [set, public],
+              [set, public, {write_concurrency, true}],
+              [set, public, {read_concurrency, true}],
+              [set, public, {write_concurrency, true}, {read_concurrency, true}]
+             ],
+         etsmem_fun = fun() -> ok end,
+         verify_etsmem_fun = fun(_) -> true end,
+         notify_res_fun = fun(_Name, _Throughput) -> ok end,
+         print_result_paths_fun =
+             fun(ResultPath, _LatestResultPath) ->
+                     Comment = 
+                         io_lib:format("<a href=\"file:///~s\">Result visualization</a>",[ResultPath]),
+                     {comment, Comment}
+             end
+       }).
+
+stdout_notify_res(ResultPath, LatestResultPath) ->
+    io:format("Result Location: /~s~n", [ResultPath]),
+    io:format("Latest Result Location: ~s~n", [LatestResultPath]).
+
+throughput_benchmark() -> 
+    throughput_benchmark(
+      #ets_throughput_bench_config{
+         print_result_paths_fun = fun stdout_notify_res/2}).
+
+throughput_benchmark(
+  #ets_throughput_bench_config{
+     benchmark_duration_ms  = BenchmarkDurationMs,
+     recover_time_ms        = RecoverTimeMs, 
+     thread_counts          = ThreadCountsOpt, 
+     key_ranges             = KeyRanges, 
+     scenarios              = Scenarios,
+     table_types            = TableTypes,
+     etsmem_fun             = ETSMemFun,
+     verify_etsmem_fun      = VerifyETSMemFun,
+     notify_res_fun         = NotifyResFun,
+     print_result_paths_fun = PrintResultPathsFun}) ->
+    NrOfSchedulers = erlang:system_info(schedulers),
+    %% Definitions of operations that are supported by the benchmark
+    NextSeqOp =
+        fun (T, KeyRange, SeqSize) ->
+                Start = rand:uniform(KeyRange),
+                Last =
+                    lists:foldl(
+                      fun(_, Prev) -> 
+                              case Prev of
+                                  '$end_of_table'-> ok;
+                                  _ ->
+                                      try ets:next(T, Prev) of
+                                           Normal -> Normal
+                                       catch
+                                           error:badarg -> 
+                                               % sets (not ordered_sets) cannot handle when the argument
+                                               % to next is not in the set
+                                               rand:uniform(KeyRange)
+                                       end
+                              end
+                      end,
+                      Start, 
+                      lists:seq(1, SeqSize)),
+                case Last =:= -1 of
+                    true -> io:format("Will never be printed");
+                    false -> ok
+                end
+        end,
+    PartialSelectOp =
+        fun (T, KeyRange, SeqSize) ->
+                Start = rand:uniform(KeyRange),
+                Last = Start + SeqSize,
+                case -1 =:= ets:select_count(T,
+                                             ets:fun2ms(fun({X}) when X > Start andalso X =< Last  -> true end)) of  
+                    true -> io:format("Will never be printed");
+                    false -> ok
+                end
+
+        end,
+    %% Mapping benchmark operation names to their corresponding functions that do them
+    Operations = 
+        #{insert =>
+              fun(T,KeyRange) -> 
+                      Num = rand:uniform(KeyRange),
+                      ets:insert(T, {Num})
+              end,
+          delete =>
+              fun(T,KeyRange) -> 
+                      Num = rand:uniform(KeyRange),
+                      ets:delete(T, Num)
+              end,
+          lookup =>
+              fun(T,KeyRange) -> 
+                      Num = rand:uniform(KeyRange),
+                      ets:lookup(T, Num)
+              end,
+          nextseq10 =>
+              fun(T,KeyRange) -> NextSeqOp(T,KeyRange,10) end,
+          nextseq100 =>
+              fun(T,KeyRange) -> NextSeqOp(T,KeyRange,100) end,
+          nextseq1000 =>
+              fun(T,KeyRange) -> NextSeqOp(T,KeyRange,1000) end,
+          selectAll =>
+              fun(T,_KeyRange) -> 
+                      case -1 =:= ets:select_count(T, ets:fun2ms(fun(_X) -> true end)) of  
+                          true -> io:format("Will never be printed");
+                          false -> ok
+                      end
+              end,
+          partial_select1000 =>
+              fun(T,KeyRange) -> PartialSelectOp(T,KeyRange,1000) end
+         },
+    %% Helper functions
+    CalculateThreadCounts = fun Calculate([Count|Rest]) ->
+                                    case Count > NrOfSchedulers of
+                                        true -> lists:reverse(Rest);
+                                        false -> Calculate([Count*2,Count|Rest])
+                                    end
+                            end,
+    CalculateOpsProbHelpTab =
+        fun Calculate([{_, OpName}], _) ->
+                [{1.0, OpName}];
+            Calculate([{OpPropability, OpName}|Res], Current) ->
+                NewCurrent = Current + OpPropability,
+                [{NewCurrent, OpName}| Calculate(Res, NewCurrent)]
+        end,
+    RenderScenario = 
+        fun R([], StringSoFar) ->
+                StringSoFar;
+            R([{Fraction, Operation}], StringSoFar) ->
+                io_lib:format("~s ~f% ~p",[StringSoFar, Fraction * 100.0, Operation]);
+            R([{Fraction, Operation}|Rest], StringSoFar) ->
+                R(Rest,
+                  io_lib:format("~s ~f% ~p, ",[StringSoFar, Fraction * 100.0, Operation]))
+        end,
+    SafeFixTableIfRequired =
+        fun(Table, Scenario, On) ->
+                case set =:= ets:info(Table, type) of
+                    true ->
+                        HasNotRequiringOp  =
+                            lists:search(
+                              fun({_,nextseq10}) -> true;
+                                 ({_,nextseq100}) -> true;
+                                 ({_,nextseq1000}) -> true;
+                                 (_) -> false
+                              end, Scenario),
+                        case HasNotRequiringOp of
+                            false -> ok;
+                            _ -> ets:safe_fixtable(Table, On)
+                        end;
+                    false -> ok
+                end
+        end,
+    DataHolder = 
+        fun DataHolderFun(Data)->
+                receive
+                    {get_data, Pid} -> Pid ! {ets_bench_data, Data};
+                    D -> DataHolderFun([Data,D])
+                end
+        end,
+    DataHolderPid = spawn_link(fun()-> DataHolder([]) end),
+    PrintData =
+        fun (Str, List) ->
+                io:format(Str, List),
+                DataHolderPid ! io_lib:format(Str, List)
+        end,
+    GetData =
+        fun () -> 
+                DataHolderPid ! {get_data, self()},
+                receive {ets_bench_data, Data} -> Data end
+        end,
+    %% Function that runs a benchmark instance and returns the number
+    %% of operations that were performed
+    RunBenchmark =
+        fun({NrOfProcs, TableConfig, Scenario, Range, Duration}) ->
+                ProbHelpTab = CalculateOpsProbHelpTab(Scenario, 0),
+                Table = ets:new(t, TableConfig),
+                Nobj = Range div 2,
+                prefill_table(Table, Range, Nobj, fun(K) -> {K} end),
+                Nobj = ets:info(Table, size),
+                SafeFixTableIfRequired(Table, Scenario, true),
+                ParentPid = self(),
+                Worker =
+                    fun() ->
+                            receive start -> ok end,
+                            WorksDone =
+                                do_work(0, Table, ProbHelpTab, Range, Operations),
+                            ParentPid ! WorksDone
+                    end,
+                ChildPids =
+                    lists:map(fun(_N) ->spawn_link(Worker)end, lists:seq(1, NrOfProcs)),
+                lists:foreach(fun(Pid) -> Pid ! start end, ChildPids),
+                timer:sleep(Duration),
+                lists:foreach(fun(Pid) -> Pid ! stop end, ChildPids),
+                TotalWorksDone = lists:foldl(
+                                   fun(_, Sum) -> 
+                                           receive 
+                                               Count -> Sum + Count
+                                           end
+                                   end, 0, ChildPids),
+                SafeFixTableIfRequired(Table, Scenario, false),
+                ets:delete(Table),
+                TotalWorksDone
+        end,
+    RunBenchmarkInSepProcess =
+        fun(ParameterTuple) ->
+                P = self(),
+                spawn_link(fun()-> P ! {bench_result, RunBenchmark(ParameterTuple)} end),
+                Result = receive {bench_result, Res} -> Res end,
+                timer:sleep(RecoverTimeMs),
+                Result
+        end,
+    RunBenchmarkAndReport =
+        fun(ThreadCount,
+            TableType,
+            Scenario,
+            KeyRange,
+            Duration) ->
+                Result = RunBenchmarkInSepProcess({ThreadCount,
+                                                   TableType,
+                                                   Scenario,
+                                                   KeyRange,
+                                                   Duration}),
+                Throughput = Result/(Duration/1000.0),
+                PrintData("; ~f",[Throughput]),
+                Name = io_lib:format("Scenario: ~w, Key Range Size: ~w, "
+                                     "# of Processes: ~w, Table Type: ~w",
+                                     [Scenario, KeyRange, ThreadCount, TableType]),
+                NotifyResFun(Name, Throughput)
+        end,
+    ThreadCounts =
+        case ThreadCountsOpt of
+            not_set ->
+                CalculateThreadCounts([1]);
+            _ -> ThreadCountsOpt
+        end,
+    %% Run the benchmark
+    PrintData("# Each instance of the benchmark runs for ~w seconds:~n", [BenchmarkDurationMs/1000]),
+    PrintData("# The result of a benchmark instance is presented as a number representing~n",[]),
+    PrintData("# the number of operations performed per second:~n~n~n",[]),
+    PrintData("# To plot graphs for the results below:~n",[]),
+    PrintData("# 1. Open \"$ERL_TOP/lib/stdlib/test/ets_SUITE_data/visualize_throughput.html\" in a web browser~n",[]),
+    PrintData("# 2. Copy the lines between \"#BENCHMARK STARTED$\" and \"#BENCHMARK ENDED$\" below~n",[]),
+    PrintData("# 3. Paste the lines copied in step 2 to the text box in the browser window opened in~n",[]),
+    PrintData("#    step 1 and press the Render button~n~n",[]),
+    PrintData("#BENCHMARK STARTED$~n",[]),
+    EtsMem = ETSMemFun(),
+    %% The following loop runs all benchmark scenarios and prints the results (i.e, operations/second)
+    lists:foreach(
+      fun(KeyRange) ->
+              lists:foreach(
+                fun(Scenario) ->
+                        PrintData("Scenario: ~s | Key Range Size: ~w$~n",
+                                  [RenderScenario(Scenario, ""), KeyRange]),
+                        lists:foreach(
+                          fun(ThreadCount) ->
+                                  PrintData("; ~w",[ThreadCount])
+                          end,
+                          ThreadCounts),
+                        PrintData("$~n",[]),
+                        lists:foreach(
+                          fun(TableType) ->
+                                  PrintData("~w ",[TableType]),
+                                  lists:foreach(
+                                    fun(ThreadCount) ->
+                                            RunBenchmarkAndReport(ThreadCount,
+                                                                  TableType,
+                                                                  Scenario,
+                                                                  KeyRange,
+                                                                  BenchmarkDurationMs)
+                                    end,
+                                    ThreadCounts),
+                                  PrintData("$~n",[])
+                          end,
+                          TableTypes)
+                end,
+                Scenarios)
+      end,
+      KeyRanges),
+    PrintData("~n#BENCHMARK ENDED$~n~n",[]),
+    VerifyETSMemFun(EtsMem),
+    DataDir = filename:join(filename:dirname(code:which(?MODULE)), "ets_SUITE_data"),
+    TemplatePath = filename:join(DataDir, "visualize_throughput.html"),
+    {ok, Template} = file:read_file(TemplatePath),
+    OutputData = string:replace(Template, "#bench_data_placeholder", GetData()),
+    OutputPath1 = filename:join(DataDir, "ets_bench_result.html"),
+    {{Year, Month, Day}, {Hour, Minute, Second}} = calendar:now_to_datetime(erlang:timestamp()),
+    StrTime = lists:flatten(io_lib:format("~4..0w-~2..0w-~2..0wT~2..0w:~2..0w:~2..0w",[Year,Month,Day,Hour,Minute,Second])),
+    OutputPath2 = filename:join(DataDir, io_lib:format("ets_bench_result_~s.html", [StrTime])),
+    file:write_file(OutputPath1, OutputData),
+    file:write_file(OutputPath2, OutputData),
+    PrintResultPathsFun(OutputPath2, OutputPath1).
+
+test_throughput_benchmark(Config) when is_list(Config) ->
+    throughput_benchmark(
+      #ets_throughput_bench_config{
+         benchmark_duration_ms = 100, 
+         recover_time_ms = 0,
+         thread_counts = [1, erlang:system_info(schedulers)],
+         key_ranges = [50000],
+         etsmem_fun = fun etsmem/0,
+         verify_etsmem_fun = fun verify_etsmem/1}).
+
+long_throughput_benchmark(Config) when is_list(Config) ->
+    N = erlang:system_info(schedulers),
+    throughput_benchmark(
+      #ets_throughput_bench_config{
+         benchmark_duration_ms = 3000,
+         recover_time_ms = 1000,
+         thread_counts = [1, N div 2, N],
+         key_ranges = [1000000],
+         scenarios = 
+             [
+              [
+               {0.5, insert},
+               {0.5, delete}
+              ],
+              [
+               {0.1, insert},
+               {0.1, delete},
+               {0.8, lookup}
+              ],
+              [
+               {0.01, insert},
+               {0.01, delete},
+               {0.98, lookup}
+              ],
+              [
+               {0.1, insert},
+               {0.1, delete},
+               {0.4, lookup},
+               {0.4, nextseq100}
+              ],
+              [
+               {0.1, insert},
+               {0.1, delete},
+               {0.79, lookup},
+               {0.01, selectAll}
+              ],
+              [
+               {0.1, insert},
+               {0.1, delete},
+               {0.79, lookup},
+               {0.01, partial_select1000}
+              ]
+             ],
+         table_types = 
+             [
+              [ordered_set, public, {write_concurrency, true}, {read_concurrency, true}],
+              [set, public, {write_concurrency, true}, {read_concurrency, true}]
+             ],
+         etsmem_fun = fun etsmem/0,
+         verify_etsmem_fun = fun verify_etsmem/1,
+         notify_res_fun = 
+             fun(Name, Throughput) -> 
+                     SummaryTable =
+                         proplists:get_value(ets_benchmark_result_summary_tab, Config),
+                     AddToSummaryCounter =
+                         case SummaryTable of
+                             undefined ->
+                                 fun(_, _) ->
+                                         ok
+                                 end;
+                             Tab ->
+                                 fun(CounterName, ToAdd) ->
+                                         OldVal = ets:lookup_element(Tab, CounterName, 2),
+                                         NewVal = OldVal + ToAdd,
+                                         ets:insert(Tab, {CounterName, NewVal})
+                                 end
+                         end,
+                     Record =
+                         fun(NoOfBenchsCtr, TotThrputCtr) ->
+                                 AddToSummaryCounter(NoOfBenchsCtr, 1),
+                                 AddToSummaryCounter(TotThrputCtr, Throughput)
+                         end,
+                     Record(nr_of_benchmarks, total_throughput),
+                     case string:find(Name, "ordered_set") of
+                         nomatch ->
+                             Record(nr_of_set_benchmarks, total_throughput_set);
+                         _ ->
+                             Record(nr_of_ordered_set_benchmarks,
+                                    total_throughput_ordered_set)
+                     end,
+                     ct_event:notify(
+                          #event{name = benchmark_data, 
+                                 data = [{suite,"ets_bench"},
+                                         {name, Name},
+                                         {value,Throughput}]})
+             end
+        }).
 
 add_lists(L1,L2) ->
     add_lists(L1,L2,[]).
@@ -6140,8 +7160,11 @@ wait_pids(Pids, Acc) ->
 	{Pid,Result} ->
 	    true = lists:member(Pid,Pids),
 	    Others = lists:delete(Pid,Pids),
-	    io:format("wait_pid got ~p from ~p, still waiting for ~p\n",[Result,Pid,Others]),
+	    %%io:format("wait_pid got ~p from ~p\n",[Result,Pid]),
 	    wait_pids(Others,[Result | Acc])
+    after 60*1000 ->
+	    io:format("Still waiting for workers ~p\n",[Pids]),
+            wait_pids(Pids, Acc)
     end.
 
 
@@ -6165,48 +7188,25 @@ wait_for_memory_deallocations() ->
 	    wait_for_memory_deallocations()
     end.
 
-
 etsmem() ->
-    wait_for_memory_deallocations(),
-
-    AllTabs = lists:map(fun(T) -> {T,ets:info(T,name),ets:info(T,size),
-				   ets:info(T,memory),ets:info(T,type)}
-			end, ets:all()),
-
-    EtsAllocInfo = erlang:system_info({allocator,ets_alloc}),
-    ErlangMemoryEts = try erlang:memory(ets) catch error:notsup -> notsup end,
-
-    Mem =
-	{ErlangMemoryEts,
-	 case EtsAllocInfo of
-	     false -> undefined;
-	     MemInfo ->
-		 CS = lists:foldl(
-			fun ({instance, _, L}, Acc) ->
-				{value,{mbcs,MBCS}} = lists:keysearch(mbcs, 1, L),
-				{value,{sbcs,SBCS}} = lists:keysearch(sbcs, 1, L),
-				NewAcc = [MBCS, SBCS | Acc],
-				case lists:keysearch(mbcs_pool, 1, L) of
-				    {value,{mbcs_pool, MBCS_POOL}} ->
-					[MBCS_POOL|NewAcc];
-				    _ -> NewAcc
-				end
-			end,
-			[],
-			MemInfo),
-		 lists:foldl(
-		   fun(L, {Bl0,BlSz0}) ->
-			   {value,BlTup} = lists:keysearch(blocks, 1, L),
-			   blocks = element(1, BlTup),
-			   Bl = element(2, BlTup),
-			   {value,BlSzTup} = lists:keysearch(blocks_size, 1, L),
-			   blocks_size = element(1, BlSzTup),
-			   BlSz = element(2, BlSzTup),
-			   {Bl0+Bl,BlSz0+BlSz}
-		   end, {0,0}, CS)
-	 end},
-    {Mem,AllTabs}.
+    % The following is done twice to avoid an inconsistent memory
+    % "snapshot" (see verify_etsmem/2).
+    lists:foldl(
+      fun(_,_) ->
+              wait_for_memory_deallocations(),
+
+              AllTabs = lists:map(fun(T) -> {T,ets:info(T,name),ets:info(T,size),
+                                             ets:info(T,memory),ets:info(T,type)}
+                                  end, ets:all()),
 
+              EtsAllocSize = erts_debug:alloc_blocks_size(ets_alloc),
+              ErlangMemoryEts = try erlang:memory(ets) catch error:notsup -> notsup end,
+
+              Mem = {ErlangMemoryEts, EtsAllocSize},
+              {Mem, AllTabs}
+      end,
+      not_used,
+      lists:seq(1,2)).
 
 verify_etsmem(MI) ->
     wait_for_test_procs(),
@@ -6227,15 +7227,15 @@ verify_etsmem({MemInfo,AllTabs}, Try) ->
 	    end;
 
 	{MemInfo2, AllTabs2} ->
-	    io:format("Expected: ~p", [MemInfo]),
-	    io:format("Actual:   ~p", [MemInfo2]),
-	    io:format("Changed tables before: ~p\n",[AllTabs -- AllTabs2]),
-	    io:format("Changed tables after: ~p\n", [AllTabs2 -- AllTabs]),
+	    io:format("#Expected: ~p", [MemInfo]),
+	    io:format("#Actual:   ~p", [MemInfo2]),
+	    io:format("#Changed tables before: ~p\n",[AllTabs -- AllTabs2]),
+	    io:format("#Changed tables after: ~p\n", [AllTabs2 -- AllTabs]),
             case Try < 2 of
                 true ->
-                    io:format("\nThis discrepancy could be caused by an "
+                    io:format("\n#This discrepancy could be caused by an "
                               "inconsistent memory \"snapshot\""
-                              "\nTry again...\n", []),
+                              "\n#Try again...\n", []),
                     verify_etsmem({MemInfo, AllTabs}, Try+1);
                 false ->
                     ct:fail("Failed memory check")
@@ -6709,22 +7709,49 @@ make_unaligned_sub_binary(List) ->
 repeat_for_opts(F) ->
     repeat_for_opts(F, [write_concurrency, read_concurrency, compressed]).
 
+repeat_for_opts_all_table_types(F) ->
+    repeat_for_opts(F, [all_types, write_concurrency, read_concurrency, compressed]).
+
+repeat_for_opts_all_non_stim_table_types(F) ->
+    repeat_for_opts(F, [all_non_stim_types, write_concurrency, read_concurrency, compressed]).
+
+repeat_for_opts_all_set_table_types(F) ->
+    repeat_for_opts(F, [set_types, write_concurrency, read_concurrency, compressed]).
+
+repeat_for_all_set_table_types(F) ->
+    repeat_for_opts(F, [set_types]).
+
+repeat_for_all_ord_set_table_types(F) ->
+    repeat_for_opts(F, [ord_set_types]).
+
+repeat_for_all_non_stim_set_table_types(F) ->
+    repeat_for_opts(F, [all_non_stim_set_types]).
+
+repeat_for_opts_all_ord_set_table_types(F) ->
+    repeat_for_opts(F, [ord_set_types, write_concurrency, read_concurrency, compressed]).
+
 repeat_for_opts(F, OptGenList) when is_function(F, 1) ->
     repeat_for_opts(F, OptGenList, []).
 
 repeat_for_opts(F, [], Acc) ->
     lists:foldl(fun(Opts, RV_Acc) ->
 			OptList = lists:filter(fun(E) -> E =/= void end, Opts),
-			io:format("Calling with options ~p\n",[OptList]),
-			RV = F(OptList),
-			case RV_Acc of
-			    {comment,_} -> RV_Acc;
-			    _ -> case RV of
-				     {comment,_} -> RV;
-				     _ -> [RV | RV_Acc]
-				 end
-			end
-		end, [], Acc);
+                        case is_redundant_opts_combo(OptList) of
+                            true ->
+                                %%io:format("Ignoring redundant options ~p\n",[OptList]),
+                                ok;
+                            false ->
+                                io:format("Calling with options ~p\n",[OptList]),
+                                RV = F(OptList),
+                                case RV_Acc of
+                                    {comment,_} -> RV_Acc;
+                                    _ -> case RV of
+                                             {comment,_} -> RV;
+                                             _ -> [RV | RV_Acc]
+                                         end
+                                end
+                        end
+                end, [], Acc);
 repeat_for_opts(F, [OptList | Tail], []) when is_list(OptList) ->
     repeat_for_opts(F, Tail, [[Opt] || Opt <- OptList]);
 repeat_for_opts(F, [OptList | Tail], AccList) when is_list(OptList) ->
@@ -6732,14 +7759,127 @@ repeat_for_opts(F, [OptList | Tail], AccList) when is_list(OptList) ->
 repeat_for_opts(F, [Atom | Tail], AccList) when is_atom(Atom) ->
     repeat_for_opts(F, [repeat_for_opts_atom2list(Atom) | Tail ], AccList).
 
-repeat_for_opts_atom2list(all_types) -> [set,ordered_set,bag,duplicate_bag];
+repeat_for_opts_atom2list(set_types) -> [set,ordered_set,stim_cat_ord_set,cat_ord_set];
+repeat_for_opts_atom2list(ord_set_types) -> [ordered_set,stim_cat_ord_set,cat_ord_set];
+repeat_for_opts_atom2list(all_types) -> [set,ordered_set,stim_cat_ord_set,cat_ord_set,bag,duplicate_bag];
+repeat_for_opts_atom2list(all_non_stim_types) -> [set,ordered_set,cat_ord_set,bag,duplicate_bag];
+repeat_for_opts_atom2list(all_non_stim_set_types) -> [set,ordered_set,cat_ord_set];
 repeat_for_opts_atom2list(write_concurrency) -> [{write_concurrency,false},{write_concurrency,true}];
 repeat_for_opts_atom2list(read_concurrency) -> [{read_concurrency,false},{read_concurrency,true}];
 repeat_for_opts_atom2list(compressed) -> [compressed,void].
 
-ets_new(Name, Opts) ->
-    %%ets:new(Name, [compressed | Opts]).
-    ets:new(Name, Opts).
+is_redundant_opts_combo(Opts) ->
+    (lists:member(stim_cat_ord_set, Opts) orelse
+     lists:member(cat_ord_set, Opts))
+        andalso
+    (lists:member({write_concurrency, false}, Opts) orelse
+     lists:member(private, Opts) orelse
+     lists:member(protected, Opts)).
+
+%% Add fake table option with info about key range.
+%% Will be consumed by ets_new and used for stim_cat_ord_set.
+key_range(Opts, KeyRange) ->
+    [{key_range, KeyRange} | Opts].
+
+ets_new(Name, Opts0) ->
+    {KeyRange, Opts1} = case lists:keytake(key_range, 1, Opts0) of
+                            {value, {key_range, KR}, Rest1} ->
+                                {KR, Rest1};
+                            false ->
+                                {1000*1000, Opts0}
+                        end,
+    ets_new(Name, Opts1, KeyRange).
+
+ets_new(Name, Opts, KeyRange) ->
+    ets_new(Name, Opts, KeyRange, fun id/1).
+
+ets_new(Name, Opts0, KeyRange, KeyFun) ->
+    {CATree, Stimulate, RevOpts} =
+        lists:foldl(fun(cat_ord_set, {false, false, Lacc}) ->
+                            {true, false, [ordered_set | Lacc]};
+                       (stim_cat_ord_set, {false, false, Lacc}) ->
+                            {true, true, [ordered_set | Lacc]};
+                       (Other, {CAT, STIM, Lacc}) ->
+                            {CAT, STIM, [Other | Lacc]}
+                    end,
+                    {false, false, []},
+                    Opts0),
+    Opts = lists:reverse(RevOpts),
+    EtsNewHelper = 
+        fun (UseOpts) ->
+                case get(ets_new_opts) of
+                    UseOpts ->
+                        silence; %% suppress identical table opts spam
+                    _ ->
+                        put(ets_new_opts, UseOpts),
+                        io:format("ets:new(~p, ~p)~n", [Name, UseOpts])
+                end,
+                ets:new(Name, UseOpts)
+        end,
+    case CATree andalso
+        (not lists:member({write_concurrency, false}, Opts)) andalso
+        (not lists:member(private, Opts)) andalso
+        (not lists:member(protected, Opts)) of
+        true ->
+            NewOpts1 = 
+                case lists:member({write_concurrency, true}, Opts) of
+                    true -> Opts;
+                    false -> [{write_concurrency, true}|Opts]
+                end,
+            NewOpts2 = 
+                case lists:member(public, NewOpts1) of
+                    true -> NewOpts1;
+                    false -> [public|NewOpts1]
+                end,
+            T = EtsNewHelper(NewOpts2),
+            case Stimulate of
+                false -> ok;
+                true -> stimulate_contention(T, KeyRange, KeyFun)
+            end,
+            T;
+        false ->
+            EtsNewHelper(Opts)
+    end.
+
+% The purpose of this function is to stimulate fine grained locking in
+% tables of types ordered_set with the write_concurrency options
+% turned on. The erts_debug feature 'ets_force_split' is used to easier
+% generate a routing tree with fine grained locking without having to
+% provoke lots of actual lock contentions.
+stimulate_contention(Tid, KeyRange, KeyFun) ->
+    T = case Tid of
+            A when is_atom(A) -> ets:whereis(A);
+            _ -> Tid
+        end,
+    erts_debug:set_internal_state(ets_force_split, {T, true}),
+    Num = case KeyRange > 50 of
+              true -> 50;
+              false -> KeyRange
+          end,
+    Seed = rand:uniform(KeyRange),
+    %%io:format("prefill_table: Seed = ~p\n", [Seed]),
+    RState = unique_rand_start(KeyRange, Seed),
+    stim_inserter_loop(T, RState, Num, KeyFun),
+    Num = ets:info(T, size),
+    ets:match_delete(T, {'$1','$1','$1'}),
+    0 = ets:info(T, size),
+    erts_debug:set_internal_state(ets_force_split, {T, false}),
+    case ets:info(T,stats) of
+        {0, _, _} ->
+            io:format("No routing nodes in table?\n"
+                      "Debug feature 'ets_force_split' does not seem to work.\n", []),
+            ct:fail("No ets_force_split?");
+        Stats ->
+            io:format("stimulated ordered_set: ~p\n", [Stats])
+    end.
+
+stim_inserter_loop(_, _, 0, _) ->
+    ok;
+stim_inserter_loop(T, RS0, N, KeyFun) ->
+    {K, RS1} = unique_rand_next(RS0),
+    Key = KeyFun(K),
+    ets:insert(T, {Key, Key, Key}),
+    stim_inserter_loop(T, RS1, N-1, KeyFun).
 
 do_tc(Do, Report) ->
     T1 = erlang:monotonic_time(),
@@ -6753,3 +7893,50 @@ syrup_factor() ->
         valgrind -> 20;
         _ -> 1
     end.
+
+
+%%
+%% This is a pseudo random number generator for UNIQUE integers.
+%% All integers between 1 and Max will be generated before it repeat itself.
+%% It's a variant of this one using quadratic residues by Jeff Preshing:
+%% http://preshing.com/20121224/how-to-generate-a-sequence-of-unique-random-integers/
+%%
+unique_rand_start(Max, Seed) ->
+    L = lists:dropwhile(fun(P) -> P < Max end,
+                        primes_3mod4()),
+    [P | _] = case L of
+                      [] ->
+                          error("Random range too large");
+                      _ ->
+                          L
+                  end,
+    3 = P rem 4,
+    {0, {Max, P, Seed}}.
+
+unique_rand_next({N, {Max, P, Seed}=Const}) ->
+    case dquad(P, N, Seed) + 1 of
+        RND when RND > Max ->  % Too large, skip
+            unique_rand_next({N+1, Const});
+        RND ->
+            {RND, {N+1, Const}}
+    end.
+
+%% A one-to-one relation between all integers 0 =< X < Prime
+%% if Prime rem 4 == 3.
+quad(Prime, X) ->
+    Rem = X*X rem Prime,
+    case 2*X < Prime of
+        true ->
+            Rem;
+        false ->
+            Prime - Rem
+    end.
+
+dquad(Prime, X, Seed) ->
+    quad(Prime, (quad(Prime, X) + Seed) rem Prime).
+
+%% Primes where P rem 4 == 3.
+primes_3mod4() ->
+    [103, 211, 503, 1019, 2003, 5003, 10007, 20011, 50023,
+     100003, 200003, 500083, 1000003, 2000003, 5000011,
+     10000019, 20000003, 50000047, 100000007].
diff --git a/lib/stdlib/test/ets_SUITE_data/visualize_throughput.html b/lib/stdlib/test/ets_SUITE_data/visualize_throughput.html
new file mode 100644
index 0000000000..27d6849c60
--- /dev/null
+++ b/lib/stdlib/test/ets_SUITE_data/visualize_throughput.html
@@ -0,0 +1,253 @@
+<!doctype html>
+<html lang="en">
+
+<!-- %% -->
+<!-- %% %CopyrightBegin% -->
+<!-- %% -->
+<!-- %% Copyright Ericsson AB and Kjell Winblad 1996-2018. All Rights Reserved. -->
+<!-- %% -->
+<!-- %% Licensed under the Apache License, Version 2.0 (the "License"); -->
+<!-- %% you may not use this file except in compliance with the License. -->
+<!-- %% You may obtain a copy of the License at -->
+<!-- %% -->
+<!-- %%     http://www.apache.org/licenses/LICENSE-2.0 -->
+<!-- %% -->
+<!-- %% Unless required by applicable law or agreed to in writing, software -->
+<!-- %% distributed under the License is distributed on an "AS IS" BASIS, -->
+<!-- %% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -->
+<!-- %% See the License for the specific language governing permissions and -->
+<!-- %% limitations under the License. -->
+<!-- %% -->
+<!-- %% %CopyrightEnd% -->
+<!-- %% -->
+<!-- %% Author: Kjell Winblad -->
+<!-- %% -->
+  
+  <head>
+    <meta charset="utf-8">
+    <title>ETS Benchmark Result Viewer</title>
+  </head>
+
+  <body>
+    <div id="insertPlaceholder"></div>
+    <h1>ETS Benchmark Result Viewer</h1>
+    <p>
+      This page generates graphs from data produced by the ETS benchmark which is defined in the function <code>ets_SUITE:throughput_benchmark/0</code> (see "<code>$ERL_TOP/lib/stdlib/test/ets_SUITE.erl</code>").
+    </p>
+    <p>
+      Note that one can paste results from several benchmark runs into the field below. Results from the same scenario but from different benchmark runs will be relabeled and ploted in the same graph automatically. This makes comparisons of different ETS versions easy. 
+    </p>
+    <p>
+      Note also that that lines can be hidden by clicking on the corresponding label.
+    </p>
+    Paste the generated data in the field below and press the Render button:
+    <br>
+    <textarea id="dataField" rows="4" cols="50">#bench_data_placeholder</textarea> 
+    <br>
+    <input type="checkbox" id="barPlot"> Bar Plot
+    <br>
+    <input type="checkbox" id="sameSpacing" checked> Same X Spacing Between Points
+    <br>
+    <input type="checkbox" class="showCheck" value="[ordered_set,public]" checked> Show <code>[ordered_set,public]</code>
+    <br>
+    <input type="checkbox" class="showCheck" value="[ordered_set,public,{write_concurrency,true}]" checked> Show <code>[ordered_set,public,{write_concurrency,true}]</code>
+    <br>
+    <input type="checkbox" class="showCheck" value="[ordered_set,public,{read_concurrency,true}]" checked> Show <code>[ordered_set,public,{read_concurrency,true}]</code>
+    <br>
+    <input type="checkbox" class="showCheck" value="[ordered_set,public,{write_concurrency,true},{read_concurrency,true}]" checked> Show <code>[ordered_set,public,{write_concurrency,true},{read_concurrency,true}]</code>
+    <br>
+    <input type="checkbox" class="showCheck" value="[set,public]" checked> Show <code>[set,public]</code>
+    <br>
+    <input type="checkbox" class="showCheck" value="[set,public,{write_concurrency,true}]" checked> Show <code>[set,public,{write_concurrency,true}]</code>
+    <br>
+    <input type="checkbox" class="showCheck" value="[set,public,{read_concurrency,true}]" checked> Show <code>[set,public,{read_concurrency,true}]</code>
+    <br>
+    <input type="checkbox" class="showCheck" value="[set,public,{write_concurrency,true},{read_concurrency,true}]" checked> Show <code>[set,public,{write_concurrency,true},{read_concurrency,true}]</code>
+    <br>
+    <button id="renderButton" type="button">Render</button> 
+    
+    <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js"
+	    integrity="sha256-3edrmyuQ0w65f8gfBsqowzjJe2iM6n0nKciPUp8y+7E="
+	    crossorigin="anonymous"></script>
+    <script>
+      var loading = false;
+      function toggleLoadingScreen(){
+          if(loading){
+              $("#loading").remove();
+              loading = false;
+          }else{
+              $('<div id="loading">'+
+                '<span style="position: fixed; top: 50%;left: 50%;color: white;"><b>Loading...</b></span>'+
+                '</div>')
+                  .css({position: "fixed",
+                        top: 0,
+                        left: 0,
+                        width: "100%",
+                        height: "100%",
+                        'background-color': "#000",
+                        filter:"alpha(opacity=50)",
+                        '-moz-opacity':"0.5",
+                        '-khtml-opacity': "0.5",
+                        opacity: "0.5",
+                        'z-index': "10000"})
+                  .appendTo(document.body);
+              loading = true;
+
+          }
+      }
+      //Start loading screen before downloading plotly which is quite large
+      toggleLoadingScreen();
+    </script>
+    <script src="https://cdn.plot.ly/plotly-1.5.0.min.js"></script>    
+    <script>
+      String.prototype.replaceAll = function(search, replacement) {
+          var target = this;
+          return target.split(search).join(replacement);
+      };
+      String.prototype.myTrim = function() {
+          var target = this;
+          return target.replace(/^\s+|\s+$/g, '');
+      };
+      function plotGraph(lines, sameSpacing, barPlot, prefix) {
+          var xvals = null;
+          var data = [];
+          while(lines.length > 0 &&
+                (lines[0].myTrim() == "" ||
+                 lines[0].myTrim().indexOf(";") !== -1)){
+              var line = lines.shift().myTrim();
+              if(line == "" || line.startsWith("#")){
+                  continue;
+              } else if(line.startsWith(";")) {
+                  xvals = line.split(";")
+                  xvals.shift(); // Remove first
+                  xvals = $.map(xvals, function (i){
+                      if(sameSpacing){
+                          return "_"+i.myTrim();
+                      }else{
+                          return parseInt(i.myTrim(), 10);
+                      }
+                  });
+              }else{
+                  line = line.split(";")
+                  var label = prefix + line.shift().myTrim();
+                  var yvals = $.map(line, function (i){
+                      return parseFloat(i.myTrim(), 10);
+                  });
+                  var trace = {
+                      x: xvals,
+                      y: yvals,
+                      mode: 'lines+markers',
+                      name: label
+                  };
+                  if(barPlot){
+                      trace['type'] = "bar";
+                  }
+                  data.push(trace);
+              }
+              
+          }
+          return data;
+      }
+      function plotGraphs(){
+          var insertPlaceholder = $("#insertPlaceholder");
+          var sameSpacing = $('#sameSpacing').is(":checked");
+          var barPlot = $('#barPlot').is(":checked");
+          var lines = $("#dataField").val();
+          $('.showCheck').each(function() {
+              var item = $(this);
+              if(!item.is(":checked")){
+                  lines = lines.replaceAll(item.val(), "#"+item.val())
+              }
+          });
+          lines = lines.split("$");
+          var nrOfGraphs = 0;
+          var scenarioDataMap = {};
+          var scenarioNrOfVersionsMap = {};
+          var scenarioList = [];
+          while(lines.length > 0){
+              var line = lines.shift().myTrim();
+              if(line == ""){
+                  continue;
+              } else if(line.startsWith("Scenario:")) {
+                  nrOfGraphs = nrOfGraphs + 1;
+                  var name = line;
+                  if(scenarioDataMap[name] === undefined){
+                      scenarioDataMap[name] = [];
+                      scenarioNrOfVersionsMap[name] = 0;
+                      scenarioList.push(line);
+                  }
+                  scenarioNrOfVersionsMap[name] = scenarioNrOfVersionsMap[name] + 1;
+                  var prefix = undefined;
+                  if(scenarioNrOfVersionsMap[name] === 1){
+                      prefix = "";
+                  }else{
+                      prefix = "Ver: " + scenarioNrOfVersionsMap[name] + " ";
+                  }
+                  scenarioDataMap[name] =
+                      scenarioDataMap[name].concat(
+                          plotGraph(lines, sameSpacing, barPlot, prefix));
+              }
+          }
+          $.each(scenarioList,
+                 function( index, name ) {
+                     var nrOfGraphs = index + 1;
+                     var data = scenarioDataMap[name];
+                     $( "<div class='added' id='graph"+nrOfGraphs+"'>")
+                         .insertBefore( insertPlaceholder );
+                     $( "<button type='button' class='added' id='fullscreenButton"+nrOfGraphs+"'>Fill screen</button>")
+                         .insertBefore( insertPlaceholder );
+                     $( "<span class='added'><br><hr><br></span>")
+                         .insertBefore( insertPlaceholder );
+                     var layout = {
+                         title:name,
+                         xaxis: {
+                             title: '# of Processes'
+                         },
+                         yaxis: {
+                             title: 'Operations/Second'
+                         }
+                         
+                     };
+                     
+                     $("#fullscreenButton"+nrOfGraphs).click(
+                         function(){
+                             $('#graph'+nrOfGraphs).replaceWith(
+                                 $("<div class='added' id='graph"+nrOfGraphs+"'>"));
+                             layout = $.extend({}, layout, {
+                                 width:$(window).width()-40,
+                                 height:$(window).height()-40
+                             });      
+                             Plotly.newPlot('graph'+nrOfGraphs,  data, layout);                         
+                         });
+                     Plotly.newPlot('graph'+nrOfGraphs,  data, layout);
+
+                 });
+          
+          
+      }
+    $(document).ready(function(){
+        $('#renderButton').click(
+            function(){
+                toggleLoadingScreen();
+                setTimeout(function(){
+                    try {                       
+                        $( ".added" ).remove();
+                        plotGraphs();
+                        toggleLoadingScreen();
+                    } catch(e){
+                        toggleLoadingScreen();
+                        console.log(e);
+                        alert("Error happened when parsing data.\n" +
+                              "See console for more info");
+                    }
+                }, 10);
+            });
+        setTimeout(function(){
+            $( ".added" ).remove();
+            plotGraphs();
+            toggleLoadingScreen();
+        }, 10);
+    });
+  </script>
+  </body>
+</html>
diff --git a/lib/stdlib/test/gen_fsm_SUITE.erl b/lib/stdlib/test/gen_fsm_SUITE.erl
index a8264e5a84..62d9d0e0ae 100644
--- a/lib/stdlib/test/gen_fsm_SUITE.erl
+++ b/lib/stdlib/test/gen_fsm_SUITE.erl
@@ -521,14 +521,16 @@ error_format_status(Config) when is_list(Config) ->
     error_logger_forwarder:register(),
     OldFl = process_flag(trap_exit, true),
     StateData = "called format_status",
+    Parent = self(),
     {ok, Pid} = gen_fsm:start(gen_fsm_SUITE, {state_data, StateData}, []),
     %% bad return value in the gen_fsm loop
     {'EXIT',{{bad_return_value, badreturn},_}} =
 	(catch gen_fsm:sync_send_event(Pid, badreturn)),
     receive
 	{error,_GroupLeader,{Pid,
-			     "** State machine"++_,
-			     [Pid,{_,_,badreturn},idle,{formatted,StateData},_]}} ->
+			     "** State machine "++_,
+			     [Pid,badreturn,Parent,idle,{formatted,StateData},
+                              {bad_return_value,badreturn}|_]}} ->
 	    ok;
 	Other ->
 	    io:format("Unexpected: ~p", [Other]),
@@ -541,12 +543,14 @@ terminate_crash_format(Config) when is_list(Config) ->
     error_logger_forwarder:register(),
     OldFl = process_flag(trap_exit, true),
     StateData = crash_terminate,
+    Parent = self(),
     {ok, Pid} = gen_fsm:start(gen_fsm_SUITE, {state_data, StateData}, []),
     stop_it(Pid),
     receive
 	{error,_GroupLeader,{Pid,
-			     "** State machine"++_,
-			     [Pid,{_,_,_},idle,{formatted, StateData},_]}} ->
+			     "** State machine "++_,
+			     [Pid,stop,Parent,idle,{formatted, StateData},
+                              {crash,terminate}|_]}} ->
 	    ok;
 	Other ->
 	    io:format("Unexpected: ~p", [Other]),
diff --git a/lib/stdlib/test/gen_statem_SUITE.erl b/lib/stdlib/test/gen_statem_SUITE.erl
index 053233df9b..16cf8f43f9 100644
--- a/lib/stdlib/test/gen_statem_SUITE.erl
+++ b/lib/stdlib/test/gen_statem_SUITE.erl
@@ -121,7 +121,8 @@ end_per_testcase(_CaseName, Config) ->
 start1(Config) ->
     %%OldFl = process_flag(trap_exit, true),
 
-    {ok,Pid0} = gen_statem:start_link(?MODULE, start_arg(Config, []), []),
+    {ok,Pid0} =
+	gen_statem:start_link(?MODULE, start_arg(Config, []), [{debug,[trace]}]),
     ok = do_func_test(Pid0),
     ok = do_sync_func_test(Pid0),
     stop_it(Pid0),
@@ -135,7 +136,8 @@ start1(Config) ->
 %% anonymous w. shutdown
 start2(Config) ->
     %% Dont link when shutdown
-    {ok,Pid0} = gen_statem:start(?MODULE, start_arg(Config, []), []),
+    {ok,Pid0} =
+	gen_statem:start(?MODULE, start_arg(Config, []), []),
     ok = do_func_test(Pid0),
     ok = do_sync_func_test(Pid0),
     stopped = gen_statem:call(Pid0, {stop,shutdown}),
@@ -511,7 +513,9 @@ abnormal1dirty(Config) ->
 %% trap exit since we must link to get the real bad_return_ error
 abnormal2(Config) ->
     OldFl = process_flag(trap_exit, true),
-    {ok,Pid} = gen_statem:start_link(?MODULE, start_arg(Config, []), []),
+    {ok,Pid} =
+        gen_statem:start_link(
+          ?MODULE, start_arg(Config, []), [{debug,[log]}]),
 
     %% bad return value in the gen_statem loop
     {{{bad_return_from_state_function,badreturn},_},_} =
@@ -529,7 +533,9 @@ abnormal2(Config) ->
 %% trap exit since we must link to get the real bad_return_ error
 abnormal3(Config) ->
     OldFl = process_flag(trap_exit, true),
-    {ok,Pid} = gen_statem:start_link(?MODULE, start_arg(Config, []), []),
+    {ok,Pid} =
+        gen_statem:start_link(
+          ?MODULE, start_arg(Config, []), [{debug,[log]}]),
 
     %% bad return value in the gen_statem loop
     {{{bad_action_from_state_function,badaction},_},_} =
@@ -547,7 +553,9 @@ abnormal3(Config) ->
 %% trap exit since we must link to get the real bad_return_ error
 abnormal4(Config) ->
     OldFl = process_flag(trap_exit, true),
-    {ok,Pid} = gen_statem:start_link(?MODULE, start_arg(Config, []), []),
+    {ok,Pid} =
+        gen_statem:start_link(
+          ?MODULE, start_arg(Config, []), [{debug,[log]}]),
 
     %% bad return value in the gen_statem loop
     BadTimeout = {badtimeout,4711,ouch},
@@ -641,51 +649,80 @@ state_enter(_Config) ->
 	      end,
 	  start =>
 	      fun (enter, Prev, N) ->
-		      Self ! {enter,start,Prev,N},
+		      Self ! {N,enter,start,Prev},
 		      {keep_state,N + 1};
 		  (internal, Prev, N) ->
-		      Self ! {internal,start,Prev,N},
+		      Self ! {N,internal,start,Prev},
 		      {keep_state,N + 1};
+                  (timeout, M, N) ->
+                      {keep_state, N + 1,
+                       {reply, {Self,N}, {timeout,M}}};
 		  ({call,From}, repeat, N) ->
 		      {repeat_state,N + 1,
-		       [{reply,From,{repeat,start,N}}]};
+		       [{reply,From,{N,repeat,start}}]};
 		  ({call,From}, echo, N) ->
 		      {next_state,wait,N + 1,
-		       {reply,From,{echo,start,N}}};
+		       [{reply,From,{N,echo,start}},{timeout,0,N}]};
 		  ({call,From}, {stop,Reason}, N) ->
 		      {stop_and_reply,Reason,
-		       [{reply,From,{stop,N}}],N + 1}
+		       [{reply,From,{N,stop}}],N + 1}
 	      end,
 	  wait =>
 	      fun (enter, Prev, N) when N < 5 ->
 		      {repeat_state,N + 1,
-		       {reply,{Self,N},{enter,Prev}}};
+		       [{reply,{Self,N},{enter,Prev}},
+                        {timeout,0,N},
+                        {state_timeout,0,N}]};
 		  (enter, Prev, N) ->
-		      Self ! {enter,wait,Prev,N},
-		      {keep_state,N + 1};
+		      Self ! {N,enter,wait,Prev},
+		      {keep_state,N + 1,
+                       [{timeout,0,N},
+                        {state_timeout,0,N}]};
+                  (timeout, M, N) ->
+                      {keep_state, N + 1,
+                       {reply, {Self,N}, {timeout,M}}};
+                  (state_timeout, M, N) ->
+                      {keep_state, N + 1,
+                       {reply, {Self,N}, {state_timeout,M}}};
 		  ({call,From}, repeat, N) ->
 		      {repeat_state_and_data,
-		       [{reply,From,{repeat,wait,N}}]};
+		       [{reply,From,{N,repeat,wait}},
+                        {timeout,0,N}]};
 		  ({call,From}, echo, N) ->
 		      {next_state,start,N + 1,
 		       [{next_event,internal,wait},
-			{reply,From,{echo,wait,N}}]}
+			{reply,From,{N,echo,wait}}]}
 	      end},
     {ok,STM} =
 	gen_statem:start_link(
-	  ?MODULE, {map_statem,Machine,[state_enter]}, []),
-
-    [{enter,start,start,1}] = flush(),
-    {echo,start,2} = gen_statem:call(STM, echo),
-    [{3,{enter,start}},{4,{enter,start}},{enter,wait,start,5}] = flush(),
-    {wait,[6|_]} = sys:get_state(STM),
-    {repeat,wait,6} = gen_statem:call(STM, repeat),
-    [{enter,wait,wait,6}] = flush(),
-    {echo,wait,7} = gen_statem:call(STM, echo),
-    [{enter,start,wait,8},{internal,start,wait,9}] = flush(),
-    {repeat,start,10} = gen_statem:call(STM, repeat),
-    [{enter,start,start,11}] = flush(),
-    {stop,12} = gen_statem:call(STM, {stop,bye}),
+	  ?MODULE, {map_statem,Machine,[state_enter]},
+          [{debug,[trace,{log,17}]}]),
+    ok = sys:log(STM, false),
+    ok = sys:log(STM, true),
+
+    [{1,enter,start,start}] = flush(),
+    {2,echo,start} = gen_statem:call(STM, echo),
+    [{3,{enter,start}},
+     {4,{enter,start}},
+     {5,enter,wait,start},
+     {6,{timeout,5}},
+     {7,{state_timeout,5}}] = flush(),
+    {wait,[8|_]} = sys:get_state(STM),
+    {8,repeat,wait} = gen_statem:call(STM, repeat),
+    [{8,enter,wait,wait},
+     {9,{timeout,8}},
+     {10,{state_timeout,8}}] = flush(),
+    {11,echo,wait} = gen_statem:call(STM, echo),
+    [{12,enter,start,wait},
+     {13,internal,start,wait}] = flush(),
+    {14,repeat,start} = gen_statem:call(STM, repeat),
+    [{15,enter,start,start}] = flush(),
+
+    {ok,Log} = sys:log(STM, get),
+    io:format("sys:log ~p~n", [Log]),
+    ok = sys:log(STM, print),
+
+    {16,stop} = gen_statem:call(STM, {stop,bye}),
     [{'EXIT',STM,bye}] = flush(),
 
     {noproc,_} =
@@ -1447,7 +1484,8 @@ enter_loop(_Config) ->
 
     %% Locally registered process + {local,Name}
     {ok,Pid1a} =
-	proc_lib:start_link(?MODULE, enter_loop, [local,local]),
+	proc_lib:start_link(
+          ?MODULE, enter_loop, [local,local,[{debug,[{log,7}]}]]),
     yes = gen_statem:call(Pid1a, 'alive?'),
     stopped = gen_statem:call(Pid1a, stop),
     receive
@@ -1459,7 +1497,8 @@ enter_loop(_Config) ->
 
     %% Unregistered process + {local,Name}
     {ok,Pid1b} =
-	proc_lib:start_link(?MODULE, enter_loop, [anon,local]),
+	proc_lib:start_link(
+          ?MODULE, enter_loop, [anon,local,[{debug,[log]}]]),
     receive
 	{'EXIT',Pid1b,process_not_registered} ->
 	    ok
@@ -1568,6 +1607,9 @@ enter_loop(_Config) ->
     ok = verify_empty_msgq().
 
 enter_loop(Reg1, Reg2) ->
+    enter_loop(Reg1, Reg2, []).
+%%
+enter_loop(Reg1, Reg2, Opts) ->
     process_flag(trap_exit, true),
     case Reg1 of
 	local -> register(armitage, self());
@@ -1579,15 +1621,15 @@ enter_loop(Reg1, Reg2) ->
     case Reg2 of
 	local ->
 	    gen_statem:enter_loop(
-	      ?MODULE, [], state0, [], {local,armitage});
+	      ?MODULE, Opts, state0, [], {local,armitage});
 	global ->
 	    gen_statem:enter_loop(
-	      ?MODULE, [], state0, [], {global,armitage});
+	      ?MODULE, Opts, state0, [], {global,armitage});
 	via ->
 	    gen_statem:enter_loop(
-	      ?MODULE, [], state0, [], {via, dummy_via, armitage});
+	      ?MODULE, Opts, state0, [], {via, dummy_via, armitage});
 	anon ->
-	    gen_statem:enter_loop(?MODULE, [], state0, [])
+	    gen_statem:enter_loop(?MODULE, Opts, state0, [])
     end.
 
 undef_code_change(_Config) ->
@@ -1619,7 +1661,9 @@ undef_terminate2(_Config) ->
 
 undef_in_terminate(_Config) ->
     Data =  {undef_in_terminate, {?MODULE, terminate}},
-    {ok, Statem} = gen_statem:start(?MODULE, {data, Data}, []),
+    {ok, Statem} =
+        gen_statem:start(
+          ?MODULE, {data, Data}, [{debug,[log]}]),
     try
         gen_statem:stop(Statem),
         ct:fail(should_crash)
diff --git a/lib/stdlib/test/io_SUITE.erl b/lib/stdlib/test/io_SUITE.erl
index f097552e8c..824f5d19f2 100644
--- a/lib/stdlib/test/io_SUITE.erl
+++ b/lib/stdlib/test/io_SUITE.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1999-2018. All Rights Reserved.
+%% Copyright Ericsson AB 1999-2019. All Rights Reserved.
 %% 
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -32,7 +32,7 @@
          io_with_huge_message_queue/1, format_string/1,
 	 maps/1, coverage/1, otp_14178_unicode_atoms/1, otp_14175/1,
          otp_14285/1, limit_term/1, otp_14983/1, otp_15103/1, otp_15076/1,
-         otp_15159/1]).
+         otp_15159/1, otp_15639/1]).
 
 -export([pretty/2, trf/3]).
 
@@ -64,7 +64,8 @@ all() ->
      io_lib_print_binary_depth_one, otp_10302, otp_10755, otp_10836,
      io_lib_width_too_small, io_with_huge_message_queue,
      format_string, maps, coverage, otp_14178_unicode_atoms, otp_14175,
-     otp_14285, limit_term, otp_14983, otp_15103, otp_15076, otp_15159].
+     otp_14285, limit_term, otp_14983, otp_15103, otp_15076, otp_15159,
+     otp_15639].
 
 %% Error cases for output.
 error_1(Config) when is_list(Config) ->
@@ -2647,3 +2648,35 @@ otp_15076(_Config) ->
     {'EXIT', {badarg, _}} = (catch io_lib:build_text(L)),
     {'EXIT', {badarg, _}} = (catch io_lib:build_text(L, [])),
     ok.
+
+otp_15639(_Config) ->
+    L = lists:duplicate(10, "a"),
+    LOpts = [{encoding, latin1},  {chars_limit, 10}],
+    UOpts = [{encoding, unicode}, {chars_limit, 10}],
+    "[[...]|...]" = pretty(L, LOpts),
+    "[[...]|...]" = pretty(L, UOpts),
+    "[\"a\",[...]|...]" =
+        pretty(L, [{chars_limit, 12}, {encoding, latin1}]),
+    "[\"a\",[...]|...]" =
+        pretty(L, [{chars_limit, 12}, {encoding, unicode}]),
+
+    %% Latin-1
+    "\"12345678\"" = pretty("12345678", LOpts),
+    "\"12345678\"..." = pretty("123456789", LOpts),
+    "\"\\r\\n123456\"..." = pretty("\r\n1234567", LOpts),
+    "\"\\r1234567\"..." = pretty("\r12345678", LOpts),
+    "\"\\r\\n123456\"..." = pretty("\r\n12345678", LOpts),
+    "\"12345678\"..." = pretty("12345678"++[x], LOpts),
+    "[49,50|...]" = pretty("1234567"++[x], LOpts),
+    "[49,x]" = pretty("1"++[x], LOpts),
+    "[[...]|...]" = pretty(["1","2","3","4","5","6","7","8"], LOpts),
+    %% Unicode
+    "\"12345678\"" = pretty("12345678", UOpts),
+    "\"12345678\"..." = pretty("123456789", UOpts),
+    "\"\\r\\n1234567\"" = pretty("\r\n1234567", UOpts),
+    "\"\\r1234567\"..." = pretty("\r12345678", UOpts),
+    "\"\\r\\n1234567\"..." = pretty("\r\n12345678", UOpts),
+    "[49,50|...]" = pretty("12345678"++[x], UOpts),
+    "\"12345678\"..." = pretty("123456789"++[x], UOpts),
+    "[[...]|...]" = pretty(["1","2","3","4","5","6","7","8"], UOpts),
+    ok.
diff --git a/lib/stdlib/test/lists_SUITE.erl b/lib/stdlib/test/lists_SUITE.erl
index 984b51e7ae..5dab6f6697 100644
--- a/lib/stdlib/test/lists_SUITE.erl
+++ b/lib/stdlib/test/lists_SUITE.erl
@@ -158,6 +158,20 @@ append_2(Config) when is_list(Config) ->
     "abcdef"=lists:append("abc", "def"),
     [hej, du]=lists:append([hej], [du]),
     [10, [elem]]=lists:append([10], [[elem]]),
+
+    %% Trapping, both crashing and otherwise.
+    [append_trapping_1(N) || N <- lists:seq(0, 20)],
+
+    ok.
+
+append_trapping_1(N) ->
+    List = lists:duplicate(N + (1 bsl N), gurka),
+    ImproperList = List ++ crash,
+
+    {'EXIT',_} = (catch (ImproperList ++ [])),
+
+    [3, 2, 1 | List] = lists:reverse(List ++ [1, 2, 3]),
+
     ok.
 
 %% Tests the lists:reverse() implementation. The function is
@@ -1679,7 +1693,7 @@ make_fun() ->
     receive {Pid, Fun} -> Fun end.
 
 make_fun(Pid) ->
-    Pid ! {self(), fun make_fun/1}.
+    Pid ! {self(), fun (X) -> {X, Pid} end}.
 
 fun_pid(Fun) ->
     erlang:fun_info(Fun, pid).
diff --git a/lib/stdlib/test/qlc_SUITE.erl b/lib/stdlib/test/qlc_SUITE.erl
index d7354438f9..2354a08f78 100644
--- a/lib/stdlib/test/qlc_SUITE.erl
+++ b/lib/stdlib/test/qlc_SUITE.erl
@@ -3163,19 +3163,13 @@ lookup2(Config) when is_list(Config) ->
                 [a] = lookup_keys(Q)
         end, [{a},{b},{c}])">>,
 
-       {cres,
-        <<"etsc(fun(E) ->
+       <<"etsc(fun(E) ->
                  Q = qlc:q([X || {X}=Y <- ets:table(E), 
                                  element(2, Y) == b, 
                                  X =:= 1]),
                  [] = qlc:e(Q),
                  false = lookup_keys(Q)
-         end, [{1,b},{2,3}])">>,
-        %% {warnings,[{2,sys_core_fold,nomatch_guard},
-	%% 	   {3,qlc,nomatch_filter},
-	%% 	   {3,sys_core_fold,{eval_failure,badarg}}]}},
-        {warnings,[{2,sys_core_fold,nomatch_guard},
-		   {3,sys_core_fold,{eval_failure,badarg}}]}},
+        end, [{1,b},{2,3}])">>,
 
        <<"etsc(fun(E) ->
                 Q = qlc:q([X || {X} <- ets:table(E), element(1,{X}) =:= 1]),
diff --git a/lib/stdlib/test/rand_SUITE.erl b/lib/stdlib/test/rand_SUITE.erl
index b76c9f5341..7685c17967 100644
--- a/lib/stdlib/test/rand_SUITE.erl
+++ b/lib/stdlib/test/rand_SUITE.erl
@@ -21,24 +21,7 @@
 -compile({nowarn_deprecated_function,[{random,seed,1},
                                       {random,uniform_s,1},
                                       {random,uniform_s,2}]}).
-
--export([all/0, suite/0, groups/0, group/1]).
-
--export([interval_int/1, interval_float/1, seed/1,
-         api_eq/1, reference/1,
-	 basic_stats_uniform_1/1, basic_stats_uniform_2/1,
-	 basic_stats_standard_normal/1,
-	 basic_stats_normal/1,
-         stats_standard_normal_box_muller/1,
-         stats_standard_normal_box_muller_2/1,
-         stats_standard_normal/1,
-         uniform_real_conv/1,
-	 plugin/1, measure/1,
-	 reference_jump_state/1, reference_jump_procdict/1]).
-
--export([test/0, gen/1]).
-
--export([uniform_real_gen/1, uniform_gen/2]).
+-compile([export_all, nowarn_export_all]).
 
 -include_lib("common_test/include/ct.hrl").
 
@@ -56,7 +39,8 @@ all() ->
      {group, distr_stats},
      uniform_real_conv,
      plugin, measure,
-     {group, reference_jump}
+     {group, reference_jump},
+     short_jump
     ].
 
 groups() ->
@@ -95,7 +79,7 @@ test() ->
       end, Tests).
 
 algs() ->
-    [exrop, exsp, exs1024s, exs64, exsplus, exs1024].
+    [exsss, exrop, exsp, exs1024s, exs64, exsplus, exs1024, exro928ss].
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
@@ -125,7 +109,7 @@ seed_1(Alg) ->
     S0 = get(rand_seed),
     S0 = rand:seed_s(Alg, {0, 0, 0}),
     %% Check that process_dict should not be used for seed_s functionality
-    _ = rand:seed_s(Alg, {1, 0, 0}),
+    _ = rand:seed_s(Alg, 4711),
     S0 = get(rand_seed),
     %% Test export
     ES0 = rand:export_seed(),
@@ -262,31 +246,43 @@ reference(Config) when is_list(Config) ->
     ok.
 
 reference_1(Alg) ->
-    Refval  = reference_val(Alg),
-    Testval = gen(Alg),
-    case Refval =:= Testval of
-        true -> ok;
-        false when Refval =:= not_implemented ->
-            exit({not_implemented,Alg});
-        false ->
-	    io:format("Failed: ~p~n",[Alg]),
-	    io:format("Length ~p ~p~n",[length(Refval), length(Testval)]),
-	    io:format("Head ~p ~p~n",[hd(Refval), hd(Testval)]),
-	    exit(wrong_value)
+    Refval = reference_val(Alg),
+    if
+	Refval =:= not_implemented -> Refval;
+	true ->
+	    case gen(Alg) of
+		Refval ->
+		    io:format("Ok: ~p~n",[Alg]),
+                    ok;
+		Testval ->
+		    io:format("Failed: ~p~n",[Alg]),
+		    io:format("Length ~p ~p~n",[length(Refval), length(Testval)]),
+		    io:format("Head ~p ~p~n",[hd(Refval), hd(Testval)]),
+                    show_wrong(Refval, Testval),
+		    exit(wrong_value)
+	    end
     end.
 
+show_wrong([], []) ->
+    ok;
+show_wrong([H|T1], [H|T2]) ->
+    show_wrong(T1, T2);
+show_wrong([H1|_], [H2|_]) ->
+    io:format("Wrong ~p ~p~n",[H1,H2]).
+
+
 gen(Algo) ->
     State =
-        case Algo of
-            exs64 -> %% Printed with orig 'C' code and this seed
-                rand:seed_s({exs64, 12345678});
-            _ when Algo =:= exsplus; Algo =:= exsp; Algo =:= exrop ->
+        if
+            Algo =:= exs64 -> %% Printed with orig 'C' code and this seed
+                rand:seed_s(exs64, [12345678]);
+            Algo =:= exsplus; Algo =:= exsp; Algo =:= exrop; Algo =:= exsss ->
                 %% Printed with orig 'C' code and this seed
-                rand:seed_s({Algo, [12345678|12345678]});
-            _ when Algo =:= exs1024; Algo =:= exs1024s ->
+                rand:seed_s(Algo, [12345678,12345678]);
+            Algo =:= exs1024; Algo =:= exs1024s; Algo =:= exro928ss ->
                 %% Printed with orig 'C' code and this seed
-                rand:seed_s({Algo, {lists:duplicate(16, 12345678), []}});
-            _ ->
+                rand:seed_s(Algo, lists:duplicate(16, 12345678));
+            true ->
                 rand:seed(Algo, {100, 200, 300})
         end,
     Max = range(State),
@@ -442,7 +438,7 @@ stats_standard_normal_box_muller(Config) when is_list(Config) ->
                     ([S|Z]) ->
                         {Z, [S]}
                 end,
-            State = [rand:seed(exrop)],
+            State = [rand:seed(exsss)],
             stats_standard_normal(NormalS, State, 3)
     catch error:_ ->
             {skip, "math:erfc/1 not supported"}
@@ -467,7 +463,7 @@ stats_standard_normal_box_muller_2(Config) when is_list(Config) ->
                     ([S|Z]) ->
                         {Z, [S]}
                 end,
-            State = [rand:seed(exrop)],
+            State = [rand:seed(exsss)],
             stats_standard_normal(NormalS, State, 3)
     catch error:_ ->
             {skip, "math:erfc/1 not supported"}
@@ -479,7 +475,7 @@ stats_standard_normal(Config) when is_list(Config) ->
     try math:erfc(1.0) of
         _ ->
             stats_standard_normal(
-              fun rand:normal_s/1, rand:seed_s(exrop), Retries)
+              fun rand:normal_s/1, rand:seed_s(exsss), Retries)
     catch error:_ ->
             {skip, "math:erfc/1 not supported"}
     end.
@@ -853,7 +849,8 @@ do_measure(_Config) ->
     Algs =
         algs() ++
         try crypto:strong_rand_bytes(1) of
-            <<_>> -> [crypto64, crypto_cache, crypto]
+            <<_>> ->
+		[crypto64, crypto_cache, crypto_aes, crypto]
         catch
             error:low_entropy -> [];
             error:undef -> []
@@ -1074,7 +1071,7 @@ do_measure(_Config) ->
                     end,
                     State)
           end,
-          exrop, TMarkNormalFloat),
+          exsss, TMarkNormalFloat),
     ok.
 
 -define(LOOP_MEASURE, (?LOOP div 5)).
@@ -1102,6 +1099,10 @@ measure_1(RangeFun, Fun, Alg, TMark) ->
                 {rand, crypto:rand_seed_alg(crypto_cache)};
             crypto ->
                 {rand, crypto:rand_seed_s()};
+            crypto_aes ->
+                {rand,
+		 crypto:rand_seed_alg(
+		   crypto_aes, crypto:strong_rand_bytes(256))};
             random ->
                 {random, random:seed(os:timestamp()), get(random_seed)};
             _ ->
@@ -1117,7 +1118,7 @@ measure_1(RangeFun, Fun, Alg, TMark) ->
                             _ -> (Time * 100 + 50) div TMark
                         end,
                     io:format(
-                      "~.12w: ~p ns ~p% [16#~.16b]~n",
+                      "~.20w: ~p ns ~p% [16#~.16b]~n",
                       [Alg, (Time * 1000 + 500) div ?LOOP_MEASURE,
                        Percent, Range]),
                     Parent ! {self(), Time},
@@ -1142,104 +1143,156 @@ reference_jump_state(Config) when is_list(Config) ->
     ok.
 
 reference_jump_1(Alg) ->
-    Refval  = reference_jump_val(Alg),
-    Testval = gen_jump_1(Alg),
-    case Refval =:= Testval of
-        true -> ok;
-        false ->
-	    io:format("Failed: ~p~n",[Alg]),
-	    io:format("Length ~p ~p~n",[length(Refval), length(Testval)]),
-	    io:format("Head ~p ~p~n",[hd(Refval), hd(Testval)]),
-	    io:format("Vals ~p ~p~n",[Refval, Testval]),
-	    exit(wrong_value)
+    Refval = reference_jump_val(Alg),
+    if
+	Refval =:= not_implemented -> Refval;
+	true ->
+	    case gen_jump_1(Alg) of
+		Refval -> ok;
+		Testval ->
+		    io:format(
+		      "Failed: ~p~n",[Alg]),
+		    io:format(
+		      "Length ~p ~p~n",
+		      [length(Refval), length(Testval)]),
+		    io:format(
+		      "Head ~p ~p~n",[hd(Refval), hd(Testval)]),
+		    io:format(
+		      "Vals ~p ~p~n",[Refval, Testval]),
+		    exit(wrong_value)
+	    end
     end.
 
 gen_jump_1(Algo) ->
-    State =
-        case Algo of
-            exs64 -> %% Test exception of not_implemented notice
-                try rand:jump(rand:seed_s(exs64))
-                catch
-                    error:not_implemented -> not_implemented
-                end;
-            _ when Algo =:= exsplus; Algo =:= exsp; Algo =:= exrop ->
-                %% Printed with orig 'C' code and this seed
-                rand:seed_s({Algo, [12345678|12345678]});
-            _ when Algo =:= exs1024; Algo =:= exs1024s ->
-                %% Printed with orig 'C' code and this seed
-                rand:seed_s({Algo, {lists:duplicate(16, 12345678), []}});
-            _ -> % unimplemented
-                not_implemented
-        end,
-    case State of
-        not_implemented -> [not_implemented];
-        _ ->
-            Max = range(State),
-            gen_jump_1(?LOOP_JUMP, State, Max, [])
+    case Algo of
+	exs64 -> %% Test exception of not_implemented notice
+	    try rand:jump(rand:seed_s(exs64))
+	    catch
+		error:not_implemented -> [error_not_implemented]
+	    end;
+	_ when Algo =:= exsplus; Algo =:= exsp; Algo =:= exrop; Algo =:= exsss ->
+	    %% Printed with orig 'C' code and this seed
+	    gen_jump_2(
+	      rand:seed_s(Algo, [12345678,12345678]));
+	_ when Algo =:= exs1024; Algo =:= exs1024s; Algo =:= exro928ss ->
+	    %% Printed with orig 'C' code and this seed
+	    gen_jump_2(
+	      rand:seed_s(Algo, lists:duplicate(16, 12345678)))
     end.
 
-gen_jump_1(N, State0, Max, Acc) when N > 0 ->
+gen_jump_2(State) ->
+    Max = range(State),
+    gen_jump_3(?LOOP_JUMP, State, Max, []).
+
+gen_jump_3(N, State0, Max, Acc) when N > 0 ->
     {_, State1} = rand:uniform_s(Max, State0),
     {Random, State2} = rand:uniform_s(Max, rand:jump(State1)),
     case N rem (?LOOP_JUMP div 100) of
-	0 -> gen_jump_1(N-1, State2, Max, [Random|Acc]);
-	_ -> gen_jump_1(N-1, State2, Max, Acc)
+	0 -> gen_jump_3(N-1, State2, Max, [Random|Acc]);
+	_ -> gen_jump_3(N-1, State2, Max, Acc)
     end;
-gen_jump_1(_, _, _, Acc) -> lists:reverse(Acc).
+gen_jump_3(_, _, _, Acc) -> lists:reverse(Acc).
 
 
 %% Check if each algorithm generates the proper jump sequence
 %% with the internal state in the process dictionary.
 reference_jump_procdict(Config) when is_list(Config) ->
-    [reference_jump_0(Alg) || Alg <- algs()],
+    [reference_jump_p1(Alg) || Alg <- algs()],
     ok.
 
-reference_jump_0(Alg) ->
+reference_jump_p1(Alg) ->
     Refval  = reference_jump_val(Alg),
-    Testval = gen_jump_0(Alg),
-    case Refval =:= Testval of
-        true -> ok;
-        false ->
-	    io:format("Failed: ~p~n",[Alg]),
-	    io:format("Length ~p ~p~n",[length(Refval), length(Testval)]),
-	    io:format("Head ~p ~p~n",[hd(Refval), hd(Testval)]),
-	    exit(wrong_value)
+    if
+	Refval =:= not_implemented -> Refval;
+	true ->
+	    case gen_jump_p1(Alg) of
+		Refval -> ok;
+		Testval ->
+		    io:format("Failed: ~p~n",[Alg]),
+		    io:format("Length ~p ~p~n",[length(Refval), length(Testval)]),
+		    io:format("Head ~p ~p~n",[hd(Refval), hd(Testval)]),
+		    exit(wrong_value)
+	    end
     end.
 
-gen_jump_0(Algo) ->
-    Seed = case Algo of
-	       exs64 -> %% Test exception of not_implemented notice
-                   try
-                       _ = rand:seed(exs64),
-                       rand:jump()
-                   catch
-                       error:not_implemented -> not_implemented
-                   end;
-	       _ when Algo =:= exsplus; Algo =:= exsp; Algo =:= exrop ->
-                   %% Printed with orig 'C' code and this seed
-		   rand:seed({Algo, [12345678|12345678]});
-	       _ when Algo =:= exs1024; Algo =:= exs1024s ->
-                   %% Printed with orig 'C' code and this seed
-		   rand:seed({Algo, {lists:duplicate(16, 12345678), []}});
-	       _ -> % unimplemented
-		   not_implemented
-	   end,
-    case Seed of
-        not_implemented -> [not_implemented];
-        _ ->
-            Max = range(Seed),
-            gen_jump_0(?LOOP_JUMP, Max, [])
+gen_jump_p1(Algo) ->
+    case Algo of
+	exs64 -> %% Test exception of not_implemented notice
+	    try
+		_ = rand:seed(exs64),
+		rand:jump()
+	    catch
+		error:not_implemented -> [error_not_implemented]
+	    end;
+	_ when Algo =:= exsplus; Algo =:= exsp; Algo =:= exrop; Algo =:= exsss ->
+	    %% Printed with orig 'C' code and this seed
+	    gen_jump_p2(
+	      rand:seed(Algo, [12345678,12345678]));
+	_ when Algo =:= exs1024; Algo =:= exs1024s; Algo =:= exro928ss ->
+	    %% Printed with orig 'C' code and this seed
+	    gen_jump_p2(
+	      rand:seed(Algo, lists:duplicate(16, 12345678)))
     end.
 
-gen_jump_0(N, Max, Acc) when N > 0 ->
+gen_jump_p2(Seed) ->
+    Max = range(Seed),
+    gen_jump_p3(?LOOP_JUMP, Max, []).
+
+gen_jump_p3(N, Max, Acc) when N > 0 ->
     _ = rand:uniform(Max),
     _ = rand:jump(),
     Random = rand:uniform(Max),
     case N rem (?LOOP_JUMP div 100) of
-	0 -> gen_jump_0(N-1, Max, [Random|Acc]);
-	_ -> gen_jump_0(N-1, Max, Acc)
+	0 -> gen_jump_p3(N-1, Max, [Random|Acc]);
+	_ -> gen_jump_p3(N-1, Max, Acc)
     end;
-gen_jump_0(_, _, Acc) -> lists:reverse(Acc).
+gen_jump_p3(_, _, Acc) -> lists:reverse(Acc).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+short_jump(Config) when is_list(Config) ->
+    Seed = erlang:system_time(),
+    short_jump(
+      rand:seed_s(exro928ss, Seed),
+      fun ({Alg,AlgState}) ->
+	      {Alg,rand:exro928_jump_2pow20(AlgState)}
+      end),
+    short_jump(
+      crypto:rand_seed_alg_s(crypto_aes, integer_to_list(Seed)),
+      fun ({Alg,AlgState}) ->
+	      {Alg,crypto:rand_plugin_aes_jump_2pow20(AlgState)}
+      end),
+    ok.
+
+short_jump({#{bits := Bits},_} = State_0, Jump2Pow20) ->
+    Range = 1 bsl Bits,
+    State_1 = repeat(7, Range, State_0),
+    %%
+    State_2a = repeat(1 bsl 20, Range, State_1),
+    State_2b = Jump2Pow20(State_1),
+    check(17, Range, State_2a, State_2b),
+    %%
+    {_,State_3a} = rand:uniform_s(Range, State_2a),
+    State_4a = Jump2Pow20(State_3a),
+    State_4b = repeat((1 bsl 20) + 1, Range, State_2b),
+    check(17, Range, State_4a, State_4b).
+
+repeat(0, _Range, State) ->
+    State;
+repeat(N, Range, State) ->
+    {_, NewState} = rand:uniform_s(Range, State),
+    repeat(N - 1, Range, NewState).
+
+check(0, _Range, _StateA, _StateB) ->
+    ok;
+check(N, Range, StateA, StateB) ->
+    {V,NewStateA} = rand:uniform_s(Range, StateA),
+    case rand:uniform_s(Range, StateB) of
+	{V,NewStateB} ->
+	    check(N - 1, Range, NewStateA, NewStateB);
+	{Wrong,_} ->
+	    ct:fail({Wrong,neq,V,for,N})
+    end.
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %%% Data
@@ -1324,6 +1377,34 @@ reference_val(exsplus) ->
      16#3dd493b8012970f,16#be13bed1e00e5c,16#ceef033b74ae10,16#3da38c6a50abe03,
      16#15cbd1a421c7a8c,16#22794e3ec6ef3b1,16#26154d26e7ea99f,16#3a66681359a6ab6];
 
+reference_val(exsss) ->
+    [16#108e8d5b01,16#33b72092117209a,16#224d4d2961a2d0a,16#2c4c81aac3da48d,
+     16#2f4bc39bfc36f3a,16#41826d4c4d243a,16#19871b8bb4e23ee,16#3e2112cdf9384b1,
+     16#69801943bf91ab,16#2de1a603c31ec45,16#a90ca1991b831e,16#51ca29571a69a7,
+     16#93ce3e511906cf,16#93ebc5768aef75,16#2412f284b902ae7,16#1ac10e758410c52,
+     16#3f32494560368f6,16#39a5e82dcf0de95,16#3f4b14d59cc6a21,16#3174668db0b36ae,
+     16#1449812fb8bd54e,16#eaca1f8ece51e1,16#2564b2545fd23c1,16#3cf3a2d2217e0d7,
+     16#226f4164ba1d054,16#10dac9ae207ceef,16#17f2c4b2d40fcb9,16#1c1b282d386fdcb,
+     16#a264f450ba2912,16#2a0a1dd67e52666,16#2be84eb835cb1e1,16#2a1cd9aa16ccc37,
+     16#7dd5e8c2b3f490,16#254a3db4976c05b,16#2a0a67971ec1e63,16#13a0cbf7c0eed8a,
+     16#3192d7edc0a20bc,16#2705ad756292e84,16#3ec429a18119c81,16#25944b38baa975b,
+     16#291dcc43e3256f4,16#30d10b759237db,16#c1522a652058a,16#8ef1e9378381e6,
+     16#1f442f33c2439f4,16#186087710a73818,16#12887f94b2b8387,16#3e42e8b1f3c9b4b,
+     16#e462859d55f9d8,16#2356ae85be908de,16#15e96a927b3bc52,16#35c6dc52511ce46,
+     16#7bc0624ce66e01,16#33ab7d95b738322,16#26f01effc182aa0,16#1b66ae7eaafea88,
+     16#278f3dc14943b90,16#22178bc8d8faf28,16#396c37d53c11985,16#5e0d79d0b10f18,
+     16#1be3de3b5675ec,16#d4db298f1f4b50,16#2da6cb99bb5c7b1,16#130b2dc17d03be8,
+     16#f1847e7e059e9f,16#2da6591788326e7,16#222e4a18c24211c,16#949213ca49baab,
+     16#b5129fec56f6a2,16#30f25f1e926f43e,16#1ddd8d04445fb4d,16#15995b542514150,
+     16#1595fe879296296,16#e2f237a488453b,16#23e5cd2d6047890,16#3a5dc88fc954666,
+     16#89bca9969b103,16#5e6893cd35dc63,16#1fed534feeeef5a,16#26f40e2147ee558,
+     16#30c131a00625837,16#2618a7e617422e9,16#23630b297e45e7,16#1143b17502f3219,
+     16#15607dac41168da,16#2886bdc314b3fb8,16#465d1cc1536546,16#30b09123e3a02e4,
+     16#245a375f810be52,16#6a1b0792376a03,16#221425f59f2470f,16#867ce16dfac81c,
+     16#9c62d95fae9b58,16#380381db1394426,16#34908dedc01c324,16#1f0ff517089b561,
+     16#1571366dd873d32,16#3ee353dc56e192,16#15a1dee8d889b11,16#41036ad76d9888
+    ];
+
 reference_val(exsp) ->
     reference_val(exsplus);
 reference_val(exs1024s) ->
@@ -1390,7 +1471,50 @@ reference_val(exrop) ->
      250789092615679985,78848633178610658,72059442721196128,
      98223942961505519,191144652663779840,
      102425686803727694,89058927716079076,80721467542933080,
-     8462479817391645,2774921106204163].
+     8462479817391645,2774921106204163];
+
+reference_val(exro928ss) ->
+%% Same as for exrop, but this state init:
+%%     for (n = 0;  n < 16;  n++) {
+%%         s[n] = 12345678;
+    [16#000000108e8d5b01,16#03604028f2769dff,16#007f92f60bc7170c,
+     16#035ea81a9898a5e2,16#0104c90c5a0c8178,16#0313514025cca717,
+     16#03c5506b2a2e98cf,16#0098a5405961552e,16#004ad29eabb785a0,
+     16#033ea8ec4efb8058,16#00b21545e62bef1c,16#0333fc5320703482,
+     16#02c3c650e51a8d47,16#03a3b7fc848c9cda,16#03775adea6cddff5,
+     16#01ae5499c9049973,16#03d3c90e5504e16b,16#0383cd6b6cb852e6,
+     16#009c8d0996ef543a,16#0059cf671371af60,16#03dfd68ed980b719,
+     16#0290f2a0acf2c5b0,16#029061df18d63b55,16#02e702ea4b45137b,
+     16#029a0ccca604d848,16#01664c7cd31f0fa6,16#00dced83e60ccddc,
+     16#008764d2c9a05f3e,16#02b9ca5f6a80c4ba,16#02daf93d2c566750,
+     16#0147d326ead18ace,16#014b452efc19297f,16#0242d3f7a7237eca,
+     16#0141bb68c2abce39,16#02d798e1230baf45,16#0216bf8f25c1ec2d,
+     16#003a43ea733f1e1f,16#036c75390db736f3,16#028cca5f5f48c6f9,
+     16#0186e4a17174d6cf,16#02152679dfa4c25c,16#01429b9f15e3b9d6,
+     16#0134a61411d22bb0,16#01593f7d970d1c94,16#0205a7d8a305490f,
+     16#01dd092272595a9c,16#0028c95208aad2d4,16#016347c25cc24162,
+     16#025306acfb891309,16#0207a07e2bebef2f,16#024ee78d86ff5288,
+     16#030b53192db97613,16#03f765cb9e98e611,16#025ec35a1e237377,
+     16#03d81fd73102ef6f,16#0242dc8fea9a68b2,16#00abb876c1d4ea1b,
+     16#00871ffd2b7e45fb,16#03593ff73c9be08d,16#00b96b2b8aca3688,
+     16#0174aba957b7cf7b,16#012b7a5d4cf4a5b7,16#032a5260f2123db8,
+     16#00f9374d88ee0080,16#030df39bec2ad657,16#00dce0cb81d006c4,
+     16#038213b806303c76,16#03940aafdbfabf84,16#0398dbb26aeba037,
+     16#01eb28d61951587f,16#00fed3d2aacfeef4,16#03499587547d6e40,
+     16#01b192fe6e979e3c,16#00e974bf5f0a26d0,16#012ed94f76459c83,
+     16#02d76859e7a82587,16#00d1d2c7b791f51b,16#03988058017a031b,
+     16#00bbcf4b59d8e86d,16#015ed8b73a1b767c,16#0277283ea6a5ee74,
+     16#002211460dd6d422,16#001ad62761ee9fbd,16#037311b44518b067,
+     16#02b5ed61bf70904e,16#011862a05c1929fa,16#014be68683c3bab4,
+     16#025c29aa5c508b07,16#00895c6106f97378,16#026ce91a3d671c7f,
+     16#02591f4c74784293,16#02f0ed2a70bc1853,16#00a2762ff614bfbc,
+     16#008f4e354f0c20d4,16#038b66fb587ed430,16#00636296e188de89,
+     16#0278fadd143e74f5,16#029697ccf1b3a4c2,16#011eccb273404458,
+     16#03f204064a9fe0c0];
+
+reference_val(_) ->
+    not_implemented.
+
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
@@ -1421,6 +1545,33 @@ reference_jump_val(exsplus) ->
      12504080415362731, 45083100453836317, 270968267812126657, 93505647407734103,
      252852934678537969, 258758309277167202, 74250882143432077, 141629095984552833];
 
+reference_jump_val(exsss) ->
+    [16#304ae783d40db2b,16#1dfb196b3a5600a,16#2a24116effc6a0d,16#1f138d68c56725,
+     16#9360a445e2f989,16#32ed8080390e242,16#294ca85a270cff6,16#1418e6296a88bf,
+     16#114fae3dc578ba7,16#479c42c760eb72,16#334a40655df22d6,16#e7a85dd4d37d72,
+     16#181db16c8925c77,16#1b8a5a8afd16cbd,16#329107bf9777a39,16#2fc915c08535e42,
+     16#16696d142c6078,16#2e2a2601c919448,16#2246150d1000568,16#26109007cb3dd44,
+     16#3761360723e3175,16#169abd352db74de,16#1c97d520983684f,16#12455f0adee8c66,
+     16#46719cff00622d,16#1fc92792ed4e437,16#18e2edae21affb5,16#3a67fa9e3e7d46e,
+     16#1313fdc2728aa74,16#1c1a2b577581db8,16#db49357ea196b1,16#10e219a21d93fc7,
+     16#3c43abede083666,16#3eef5055a58bbf9,16#1975056f95d90e3,16#3916c133ab16d87,
+     16#2bc0bea891c26f1,16#391e4b369fc6b36,16#183f83155a359f6,16#1d9f137e9d2e488,
+     16#ef084de5f4cd3c,16#36a9cf7e29e55d3,16#19eca704e0409a7,16#1bdb99902896c69,
+     16#21777e2ad128203,16#5d0369ec0563e4,16#36db40b863bd74a,16#33feb71b7515159,
+     16#208d923ce26f257,16#3841b32891c082d,16#2748f224c2ba226,16#2fcd93b2daf79bb,
+     16#2c8e6cacad58ec4,16#39850131a1a85f,16#134648d6eea624d,16#2e102e197d5725c,
+     16#12ac280fa744758,16#1c18266c7442d16,16#22b5f91b15fe17e,16#316740ca870f7c8,
+     16#720ed4836c426,16#1aac0f738d04f8c,16#34fcd2a647b462c,16#3d430ac755114a3,
+     16#3692e3670fdf2a,16#265279ab0fc0a15,16#10bd883dee80945,16#10e7843413175e4,
+     16#b291deba08cee2,16#3915a8234caf11,16#34b911b96707dbd,16#ae63fcda15fde6,
+     16#b13b9091e82e41,16#29de1b6d70dc04f,16#23fbcbc409617e8,16#1389a0738061066,
+     16#360f39af790f5d1,16#f436da2a7d12f5,16#2d06ba8da21e08,16#3601a6492b887d,
+     16#2b2590b8c6cc186,16#f8d613b6904464,16#e5456786e46b78,16#201b8b1f96ed80c,
+     16#1b75b86d9b843f2,16#2e8bfaa7243a630,16#125ff068a78c3b4,16#3875a28c48bd26e,
+     16#f09a06941fc9d7,16#107c4de8ca77744,16#357c34144bb9ed6,16#3ccc55d3ebb3378,
+     16#28db7cea7d3fdee,16#3197fd0b49f6370,16#11af6fedb708ea6,16#2bde0382e37469e,
+     16#10666171abddb3f,16#1a8876c1f4e78a8,16#169c0efd4422043,16#1501c49abf0440f];
+
 reference_jump_val(exs1024) ->
     [2655961906500790629, 17003395417078685063, 10466831598958356428, 7603399148503548021,
      1650550950190587188, 12294992315080723704, 15743995773860389219, 5492181000145247327,
@@ -1452,7 +1603,7 @@ reference_jump_val(exsp) ->
     reference_jump_val(exsplus);
 reference_jump_val(exs1024s) ->
     reference_jump_val(exs1024);
-reference_jump_val(exs64) -> [not_implemented];
+reference_jump_val(exs64) -> [error_not_implemented];
 reference_jump_val(exrop) ->
 %% #include <stdint.h>
 %% #include <stdio.h>
@@ -1517,7 +1668,50 @@ reference_jump_val(exrop) ->
      250227633882474729,171181147785250210,55437891969696407,
      241227318715885854,77323084015890802,
      1663590009695191,234064400749487599,222983191707424780,
-     254956809144783896,203898972156838252].
+     254956809144783896,203898972156838252];
+
+reference_jump_val(exro928ss) ->
+%% Same as for exrop, but this state init:
+%%     for (n = 0;  n < 16;  n++) {
+%%         s[n] = 12345678;
+    [16#031ee449e53b6689,16#001afeee12813137,16#005e2172711df36b,
+     16#02850aea3a595d36,16#0029705187e891c7,16#001794badd489667,
+     16#00ab621be15be56c,16#024b663a6924786b,16#03cab70b8ab854bf,
+     16#01daa37601285320,16#02db955a53c40e89,16#01fbef51d5c65891,
+     16#02fecf4116ed5f77,16#0349c2057246ac5d,16#01217f257c4fa148,
+     16#0367ee84d020697d,16#01d5cf647fe23335,16#020941838adfb750,
+     16#02c2da26b1d7b3e5,16#00d1583d34cea6c0,16#038be9cb5b527f50,
+     16#00bfa93c1d7f4864,16#03778912a4f56b14,16#037fcabc483fa5c5,
+     16#00a3c9de6aaf5fc7,16#03600b883b2f2b42,16#03797a99ffddfdfb,
+     16#0189fead429945b7,16#0103ac90cd912508,16#03e3d872fd950d64,
+     16#0214fc3e77dc2f02,16#02a084f4f0e580ca,16#035d2fe72266a7f3,
+     16#02887c49ae7e41a4,16#0011dc026af83c51,16#02d28bfd32c2c517,
+     16#022e4165c33ad4f3,16#01f053cf0687b052,16#035315e6e53c8918,
+     16#01255312da07b572,16#0237f1da11ec9221,16#02faf2e282fb1fb1,
+     16#0227423ec1787ebc,16#011fa5eb1505571c,16#0275ff9eaaa1abdd,
+     16#03e2d032c3981cb4,16#0181bb32d51d3072,16#01b1d3939b9f16ec,
+     16#0259f09f55d1112f,16#0396464a2767e428,16#039777c0368bdb9e,
+     16#0320925f35f36c5f,16#02a35289e0af1248,16#02e80bd4bc72254b,
+     16#00a8b11af1674d68,16#027735036100a69e,16#03c8c268ded7f254,
+     16#03de80aa57c65217,16#00f2247754d24000,16#005582a42b467f89,
+     16#0031906569729477,16#00fd523f2ca4fefe,16#00ad223113d1e336,
+     16#0238ddf026cbfca9,16#028b98211cfed876,16#0354353ebcc0de9a,
+     16#009ee370c1e154f4,16#033131af3b8a7f88,16#032291baa45801e3,
+     16#00941fc2b45eb217,16#035d6a61fa101647,16#03fdb51f736f1bbc,
+     16#0232f7b98539faa0,16#0311b35319e3a61e,16#0048356b17860eb5,
+     16#01a205b2554ce71e,16#03f873ea136e29d6,16#003c67d5c3df5ffd,
+     16#00cd19e7a8641648,16#0149a8c54e4ba45e,16#0329498d134d2f6a,
+     16#03b69421ae65ee2b,16#01a8d20b59447429,16#006b2292571032a2,
+     16#00c193b17da22ba5,16#01faa7ab62181249,16#00acd401cd596a00,
+     16#005b5086c3531402,16#0259113d5d3d058d,16#00bef3f3ce4a43b2,
+     16#014837a4070b893c,16#00460a26ac2eeec1,16#026219a8b8c63d7e,
+     16#03c7b8ed032cf5a6,16#004da912a1fff131,16#0297de3716215741,
+     16#0079fb9b4c715466,16#00a73bad4ae5a356,16#0072e606c0d4ab86,
+     16#02374382d5f9bd2e];
+
+reference_jump_val(_) ->
+    not_implemented.
+
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
diff --git a/lib/stdlib/test/rand_Xoroshiro928ss_dev.txt b/lib/stdlib/test/rand_Xoroshiro928ss_dev.txt
new file mode 100644
index 0000000000..150f37fcfa
--- /dev/null
+++ b/lib/stdlib/test/rand_Xoroshiro928ss_dev.txt
@@ -0,0 +1,343 @@
+%CopyrightBegin%
+
+Copyright Ericsson AB 2015-2017. All Rights Reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+%CopyrightEnd%
+
+
+Memorable facts from designing the Xoroshiro928** generator
+===========================================================
+AKA: exro928ss in the rand module
+
+Author: Raimo Niskanen, for the Erlang/OTP team @ Ericsson.
+
+Reference URL: http://vigna.di.unimi.it/ftp/papers/ScrambledLinear.pdf
+i.e the Xoroshiro1024 generator with ** scrambler:
+
+    int p;
+    uint64_t s[16];
+    
+    const int q = p;
+    const uint64_t s0 = s[p = (p + 1) & 15];
+    
+    uint64_t s15 = s[q];
+    
+    const uint64_t result_starstar = rotl(s0 * S, R) * T;
+    
+    s15 ^= s0;
+    s[q] = rotl(s0, A) ^ s15 ^ (s15 << B);
+    s[p] = rotl(s15, C);
+
+Where {S, R, T} = {5, 7, 9} as recommended in the paper.
+
+We want to scale down to 58 bit words (16 of them)
+so we get a generator with period 2^928 - 1.
+
+{A, B, C} were deduced as follows
+---------------------------------
+
+First, to find which triplets that give a full period generator
+one have to factor 2^928 - 1.
+
+https://www.alpertron.com.ar/ECM.HTM actually could do that
+and gave the result:
+
+    Value
+    2^928 - 1
+    
+    2269 007733 883335 972287 082669 296112 915239 349672 942191 252221 331572
+    442536 403137 824056 312817 862695 551072 066953 619064 625508 194663
+    368599 769448 406663 254670 871573 830845 597595 897613 333042 429214
+    224697 474472 410882 236254 024057 110212 260250 671521 235807 709272
+    244389 361641 091086 035023 229622 419455 (280 digits) = 3 × 5 × 17 × 59 ×
+    233 × 257 × 929 × 1103 × 2089 × 5569 × 8353 × 59393 × 65537 × 3 033169 ×
+    39 594977 × 107 367629 × 536 903681 × 748 264961 × 2245 984577 × 239
+    686663 718401 × 15 929619 591127 520827 829953 × 82280 195167 144119
+    832390 568177 × 6033 312171 721035 031651 315652 130497 (34 digits) × 18
+    774318 450142 955120 650303 957350 521748 903233 (44 digits) × 15 694604
+    006012 505869 851221 169365 594050 637743 819041 (50 digits) 
+
+Sebastiano Vigna from that calculated all full period triplets, at the
+end of this document, and the ones with the highest degree were:
+
+    23-25-12  411
+    36-2-35   411
+    55-5-54   411
+    14-19-11  415
+    34-37-5   415
+    37-3-56   415
+    55-11-54  417
+    30-3-41   419
+    11-45-50  423
+    50-19-47  423
+    52-27-13  427
+    54-9-25   433
+    56-43-35  433
+    44-9-45   441
+
+All these candidates were tested with TestU01-1.2.3:
+
+    http://simul.iro.umontreal.ca/testu01/tu01.html
+
+A plugin was created with parameters for {A, B, C} and, since
+TestU01 is a 32-bit test tool, with parameters to reverse
+the generated bits or not, and to take the 32 highest or lowest
+bits from the reversed or non-reversed 58 bit output.
+
+The generators were seeded with a SplitMix64 generator like the
+one used for seeding this generator in the rand module,
+taking the 58 lowest bits and wasting all zero values.
+
+3 runs were made with all candidates and all four bit selection variants.
+For these runs the seeder was initialized with 12345678, 876543212345678
+and 1234567890.
+
+After all these runs the candidate with the highest degree: 44-9-45
+had not gotten any suspicious p-value at all.  All the other
+got p-values around 5.0e-4 worst 9.8e-6 suggesting only random
+failures, so they would probably have worked about as well.
+
+Finally 44-9-45 was run through PractRand-0.93:
+
+    http://pracrand.sourceforge.net/
+
+Again, all 4 bit selection variants of 32 bits were run.
+Random failures with p-values around e-3..e-4 for the "smaller"
+tests, but for 8, 16 and 32 TB tests no anomalies were found
+(with the internal seeder masked to 58 bits):
+
+    Xoroshiro928High seed:        0x3178ec5d
+    Xoroshiro928Low seed:         0xa9a04fb9
+    Xoroshiro928ReverseHigh seed: 0xfa0bdbab
+    Xoroshiro928ReverseLow seed:  0xada51705
+
+
+Then, S. Vigna calculated the 2^512 jump coefficient as well
+as a 2^20 jump coefficient (for testing purposes) for 44-9-45.
+
+2^512:
+  { 0x44085302f77130ca, 0xba05381fdfd14902, 0x10a1de1d7d6813d2,
+    0xb83fe51a1eb3be19, 0xa81b0090567fd9f0, 0x5ac26d5d20f9b49f,
+    0x4ddd98ee4be41e01, 0x0657e19f00d4b358, 0xf02f778573cf0f0a,
+    0xb45a3a8a3cef3cc0, 0x6e62a33cc2323831, 0xbcb3b7c4cc049c53,
+    0x83f240c6007e76ce, 0xe19f5fc1a1504acd, 0x00000000b10773cb }
+
+2^20:
+  { 0xbdb966a3daf905e6, 0x644807a56270cf78, 0xda90f4a806c17e9e,
+    0x4a426866bfad3c77, 0xaf699c306d8e7566, 0x8ebc73c700b8b091,
+    0xc081a7bf148531fb, 0xdc4d3af15f8a4dfd, 0x90627c014098f4b6,
+    0x06df2eb1feaf0fb6, 0x5bdeb1a5a90f2e6b, 0xa480c5878c3549bd,
+    0xff45ef33c82f3d48, 0xa30bebc15fefcc78, 0x00000000cb3d181c }
+
+Standard jump function pseudocode:
+
+    Jump constant j = 0xb10773cb...44085302f77130ca
+    Generator state: s
+    New generator state: t = 0
+    foreach bit in j, low to high:
+        if the bit is one:
+            t ^= s
+        next s
+    s = t
+
+
+The complete list of full period constants
+------------------------------------------
+
+29-48-54	27	x^928 + x^874 + x^870 + x^840 + x^814 + x^784 + x^759 + x^750 + x^724 + x^720 + x^634 + x^630 + x^600 + x^574 + x^544 + x^519 + x^510 + x^484 + x^480 + x^390 + x^360 + x^270 + x^240 + x^150 + x^120 + x^30 + 1
+
+29-18-56	65	x^928 + x^870 + x^850 + x^840 + x^832 + x^821 + x^802 + x^791 + x^761 + x^750 + x^734 + x^731 + x^720 + x^712 + x^701 + x^686 + x^674 + x^671 + x^663 + x^641 + x^630 + x^611 + x^610 + x^603 + x^600 + x^596 + x^577 + x^566 + x^547 + x^524 + x^517 + x^510 + x^487 + x^480 + x^476 + x^464 + x^457 + x^446 + x^427 + x^423 + x^397 + x^390 + x^367 + x^363 + x^360 + x^356 + x^352 + x^341 + x^326 + x^322 + x^311 + x^281 + x^270 + x^251 + x^240 + x^236 + x^232 + x^221 + x^191 + x^161 + x^150 + x^131 + x^120 + x^30 + 1
+
+29-32-36	81	x^928 + x^874 + x^870 + x^840 + x^820 + x^819 + x^794 + x^790 + x^770 + x^765 + x^764 + x^760 + x^754 + x^750 + x^740 + x^739 + x^735 + x^734 + x^730 + x^709 + x^704 + x^674 + x^670 + x^665 + x^660 + x^650 + x^649 + x^635 + x^634 + x^619 + x^614 + x^605 + x^595 + x^585 + x^584 + x^579 + x^564 + x^555 + x^545 + x^540 + x^524 + x^515 + x^514 + x^495 + x^490 + x^485 + x^460 + x^455 + x^435 + x^425 + x^400 + x^395 + x^375 + x^370 + x^365 + x^340 + x^315 + x^310 + x^305 + x^300 + x^290 + x^285 + x^275 + x^260 + x^250 + x^245 + x^240 + x^215 + x^190 + x^180 + x^170 + x^150 + x^130 + x^120 + x^115 + x^105 + x^100 + x^75 + x^40 + x^30 + 1
+
+39-10-20	105	x^928 + x^898 + x^870 + x^841 + x^840 + x^808 + x^783 + x^782 + x^781 + x^780 + x^778 + x^754 + x^752 + x^724 + x^721 + x^720 + x^696 + x^692 + x^688 + x^667 + x^666 + x^661 + x^660 + x^658 + x^638 + x^636 + x^632 + x^609 + x^607 + x^606 + x^605 + x^604 + x^601 + x^600 + x^580 + x^578 + x^576 + x^572 + x^568 + x^549 + x^548 + x^541 + x^540 + x^538 + x^516 + x^512 + x^489 + x^485 + x^484 + x^481 + x^480 + x^456 + x^452 + x^448 + x^429 + x^428 + x^421 + x^420 + x^418 + x^400 + x^398 + x^396 + x^392 + x^368 + x^365 + x^364 + x^336 + x^328 + x^319 + x^318 + x^315 + x^314 + x^298 + x^286 + x^278 + x^276 + x^274 + x^255 + x^254 + x^249 + x^245 + x^228 + x^226 + x^220 + x^208 + x^199 + x^198 + x^189 + x^188 + x^178 + x^168 + x^166 + x^160 + x^129 + x^128 + x^108 + x^100 + x^88 + x^79 + x^78 + x^69 + x^68 + x^58 + x^40 + 1
+
+4-4-9	149	x^928 + x^898 + x^886 + x^870 + x^856 + x^826 + x^823 + x^808 + x^796 + x^793 + x^784 + x^778 + x^772 + x^766 + x^760 + x^754 + x^751 + x^742 + x^736 + x^734 + x^724 + x^713 + x^709 + x^706 + x^703 + x^694 + x^691 + x^688 + x^676 + x^674 + x^673 + x^664 + x^662 + x^658 + x^653 + x^641 + x^640 + x^634 + x^632 + x^631 + x^620 + x^614 + x^611 + x^608 + x^604 + x^602 + x^599 + x^590 + x^583 + x^581 + x^578 + x^574 + x^572 + x^571 + x^569 + x^568 + x^561 + x^554 + x^553 + x^551 + x^544 + x^542 + x^540 + x^538 + x^532 + x^531 + x^518 + x^514 + x^512 + x^502 + x^498 + x^489 + x^488 + x^484 + x^482 + x^480 + x^479 + x^468 + x^463 + x^456 + x^454 + x^452 + x^449 + x^448 + x^438 + x^433 + x^429 + x^424 + x^422 + x^420 + x^418 + x^408 + x^406 + x^401 + x^396 + x^394 + x^392 + x^380 + x^378 + x^376 + x^371 + x^367 + x^364 + x^362 + x^360 + x^350 + x^348 + x^346 + x^341 + x^334 + x^332 + x^328 + x^318 + x^311 + x^307 + x^304 + x^302 + x^300 + x^298 + x^288 + x^274 + x^272 + x^254 + x^249 + x^242 + x^240 + x^233 + x^212 + x^208 + x^189 + x^180 + x^178 + x^166 + x^152 + x^143 + x^136 + x^127 + x^122 + x^120 + x^113 + x^106 + x^88 + x^83 + x^81 + x^67 + x^58 + x^51 + x^14 + 1
+
+44-44-45	157	x^928 + x^898 + x^870 + x^850 + x^830 + x^820 + x^808 + x^800 + x^790 + x^782 + x^778 + x^777 + x^760 + x^757 + x^752 + x^747 + x^742 + x^727 + x^702 + x^694 + x^689 + x^688 + x^679 + x^674 + x^659 + x^658 + x^657 + x^644 + x^642 + x^637 + x^634 + x^627 + x^619 + x^612 + x^607 + x^606 + x^601 + x^596 + x^594 + x^591 + x^590 + x^584 + x^576 + x^568 + x^566 + x^561 + x^560 + x^556 + x^554 + x^546 + x^541 + x^539 + x^538 + x^518 + x^516 + x^511 + x^509 + x^503 + x^502 + x^499 + x^496 + x^488 + x^476 + x^471 + x^468 + x^466 + x^464 + x^448 + x^446 + x^441 + x^436 + x^421 + x^420 + x^415 + x^411 + x^408 + x^404 + x^400 + x^388 + x^383 + x^381 + x^379 + x^376 + x^363 + x^358 + x^356 + x^354 + x^346 + x^344 + x^340 + x^333 + x^330 + x^328 + x^325 + x^316 + x^312 + x^307 + x^305 + x^302 + x^284 + x^282 + x^277 + x^270 + x^268 + x^267 + x^256 + x^252 + x^249 + x^245 + x^244 + x^239 + x^238 + x^236 + x^231 + x^228 + x^226 + x^224 + x^222 + x^215 + x^208 + x^207 + x^205 + x^203 + x^201 + x^199 + x^196 + x^194 + x^192 + x^189 + x^185 + x^184 + x^182 + x^180 + x^175 + x^171 + x^168 + x^166 + x^162 + x^161 + x^155 + x^152 + x^150 + x^141 + x^134 + x^132 + x^131 + x^127 + x^122 + x^111 + x^104 + x^92 + x^90 + x^83 + x^81 + x^58 + x^37 + 1
+
+40-40-7	167	x^928 + x^898 + x^870 + x^866 + x^838 + x^836 + x^807 + x^806 + x^804 + x^778 + x^777 + x^774 + x^745 + x^744 + x^742 + x^718 + x^714 + x^713 + x^712 + x^687 + x^658 + x^657 + x^656 + x^655 + x^654 + x^626 + x^620 + x^619 + x^598 + x^596 + x^592 + x^591 + x^589 + x^566 + x^564 + x^563 + x^562 + x^560 + x^558 + x^538 + x^534 + x^530 + x^529 + x^504 + x^503 + x^502 + x^500 + x^499 + x^498 + x^496 + x^478 + x^474 + x^470 + x^469 + x^443 + x^442 + x^441 + x^439 + x^438 + x^436 + x^434 + x^432 + x^418 + x^416 + x^414 + x^410 + x^409 + x^407 + x^406 + x^405 + x^402 + x^386 + x^383 + x^380 + x^374 + x^373 + x^372 + x^370 + x^356 + x^350 + x^349 + x^348 + x^347 + x^346 + x^345 + x^340 + x^328 + x^326 + x^324 + x^323 + x^321 + x^316 + x^314 + x^308 + x^298 + x^296 + x^294 + x^289 + x^285 + x^283 + x^282 + x^281 + x^280 + x^278 + x^263 + x^262 + x^259 + x^257 + x^255 + x^251 + x^249 + x^248 + x^246 + x^233 + x^232 + x^229 + x^220 + x^218 + x^217 + x^216 + x^208 + x^202 + x^201 + x^199 + x^195 + x^190 + x^188 + x^187 + x^186 + x^178 + x^172 + x^169 + x^167 + x^162 + x^161 + x^159 + x^158 + x^157 + x^146 + x^142 + x^139 + x^135 + x^125 + x^123 + x^116 + x^112 + x^107 + x^105 + x^94 + x^93 + x^88 + x^86 + x^84 + x^82 + x^75 + x^73 + x^69 + x^64 + x^58 + x^56 + x^54 + x^52 + x^43 + x^41 + x^39 + x^32 + 1
+
+47-47-18	217	x^928 + x^898 + x^871 + x^870 + x^843 + x^842 + x^841 + x^813 + x^812 + x^811 + x^808 + x^787 + x^786 + x^785 + x^783 + x^781 + x^778 + x^759 + x^757 + x^754 + x^753 + x^751 + x^729 + x^727 + x^726 + x^723 + x^721 + x^701 + x^700 + x^699 + x^697 + x^693 + x^691 + x^688 + x^673 + x^672 + x^670 + x^667 + x^663 + x^661 + x^658 + x^647 + x^644 + x^641 + x^637 + x^633 + x^631 + x^618 + x^617 + x^614 + x^613 + x^612 + x^611 + x^610 + x^607 + x^603 + x^601 + x^586 + x^585 + x^582 + x^581 + x^580 + x^577 + x^573 + x^571 + x^568 + x^562 + x^560 + x^556 + x^555 + x^554 + x^553 + x^551 + x^547 + x^543 + x^541 + x^538 + x^532 + x^530 + x^528 + x^524 + x^522 + x^521 + x^517 + x^513 + x^511 + x^506 + x^504 + x^502 + x^500 + x^497 + x^495 + x^491 + x^487 + x^483 + x^481 + x^478 + x^474 + x^472 + x^467 + x^466 + x^465 + x^461 + x^457 + x^453 + x^451 + x^444 + x^438 + x^437 + x^436 + x^435 + x^431 + x^427 + x^423 + x^412 + x^408 + x^407 + x^405 + x^401 + x^397 + x^390 + x^384 + x^377 + x^375 + x^371 + x^367 + x^366 + x^365 + x^363 + x^362 + x^360 + x^358 + x^356 + x^352 + x^350 + x^347 + x^345 + x^341 + x^337 + x^336 + x^334 + x^332 + x^324 + x^317 + x^315 + x^311 + x^307 + x^306 + x^305 + x^304 + x^302 + x^300 + x^298 + x^296 + x^287 + x^285 + x^281 + x^279 + x^277 + x^276 + x^274 + x^268 + x^266 + x^257 + x^255 + x^247 + x^244 + x^242 + x^240 + x^238 + x^234 + x^227 + x^221 + x^219 + x^216 + x^214 + x^206 + x^197 + x^195 + x^193 + x^182 + x^176 + x^161 + x^156 + x^152 + x^146 + x^139 + x^133 + x^116 + x^111 + x^109 + x^107 + x^96 + x^94 + x^92 + x^90 + x^88 + x^85 + x^81 + x^79 + x^77 + x^73 + x^66 + x^64 + x^62 + x^60 + x^53 + x^51 + x^47 + x^45 + x^36 + x^34 + x^32 + x^19 + x^17 + x^15 + 1
+
+31-52-54	249	x^928 + x^898 + x^872 + x^870 + x^842 + x^841 + x^838 + x^836 + x^812 + x^810 + x^782 + x^781 + x^779 + x^778 + x^774 + x^753 + x^752 + x^750 + x^748 + x^723 + x^722 + x^721 + x^719 + x^717 + x^714 + x^712 + x^694 + x^690 + x^689 + x^688 + x^686 + x^684 + x^664 + x^663 + x^662 + x^661 + x^660 + x^658 + x^657 + x^656 + x^655 + x^654 + x^653 + x^652 + x^650 + x^634 + x^633 + x^631 + x^630 + x^629 + x^628 + x^622 + x^604 + x^599 + x^597 + x^596 + x^593 + x^592 + x^590 + x^588 + x^570 + x^567 + x^566 + x^562 + x^560 + x^536 + x^534 + x^533 + x^531 + x^530 + x^526 + x^513 + x^512 + x^510 + x^509 + x^508 + x^507 + x^506 + x^505 + x^504 + x^502 + x^498 + x^483 + x^482 + x^481 + x^479 + x^478 + x^476 + x^466 + x^464 + x^454 + x^445 + x^438 + x^424 + x^423 + x^422 + x^421 + x^419 + x^418 + x^411 + x^404 + x^402 + x^394 + x^393 + x^392 + x^391 + x^390 + x^387 + x^386 + x^383 + x^380 + x^379 + x^378 + x^377 + x^376 + x^374 + x^364 + x^362 + x^361 + x^359 + x^357 + x^356 + x^355 + x^354 + x^351 + x^349 + x^348 + x^347 + x^345 + x^342 + x^340 + x^332 + x^330 + x^329 + x^328 + x^327 + x^325 + x^324 + x^323 + x^321 + x^319 + x^318 + x^316 + x^314 + x^312 + x^302 + x^301 + x^300 + x^296 + x^295 + x^294 + x^291 + x^289 + x^287 + x^286 + x^283 + x^278 + x^266 + x^265 + x^264 + x^263 + x^262 + x^260 + x^259 + x^255 + x^250 + x^234 + x^232 + x^229 + x^227 + x^226 + x^225 + x^222 + x^218 + x^216 + x^208 + x^204 + x^200 + x^198 + x^197 + x^195 + x^194 + x^193 + x^190 + x^188 + x^178 + x^174 + x^173 + x^172 + x^171 + x^170 + x^169 + x^168 + x^166 + x^165 + x^164 + x^162 + x^161 + x^160 + x^159 + x^158 + x^157 + x^156 + x^154 + x^142 + x^141 + x^139 + x^138 + x^135 + x^131 + x^128 + x^126 + x^116 + x^112 + x^110 + x^107 + x^106 + x^105 + x^104 + x^102 + x^100 + x^98 + x^96 + x^95 + x^94 + x^92 + x^88 + x^80 + x^79 + x^76 + x^74 + x^73 + x^71 + x^70 + x^69 + x^66 + x^65 + x^64 + x^56 + x^54 + x^48 + x^46 + x^45 + x^43 + x^38 + x^35 + x^33 + x^30 + 1
+
+57-54-32	249	x^928 + x^898 + x^870 + x^855 + x^848 + x^834 + x^826 + x^825 + x^808 + x^806 + x^805 + x^804 + x^798 + x^796 + x^788 + x^778 + x^776 + x^775 + x^766 + x^763 + x^756 + x^752 + x^745 + x^742 + x^736 + x^735 + x^734 + x^731 + x^715 + x^714 + x^713 + x^705 + x^703 + x^694 + x^688 + x^684 + x^682 + x^671 + x^660 + x^658 + x^652 + x^642 + x^641 + x^639 + x^634 + x^630 + x^621 + x^620 + x^616 + x^612 + x^609 + x^604 + x^602 + x^593 + x^591 + x^584 + x^579 + x^570 + x^568 + x^566 + x^565 + x^562 + x^558 + x^554 + x^550 + x^544 + x^536 + x^535 + x^533 + x^530 + x^529 + x^528 + x^524 + x^522 + x^517 + x^512 + x^505 + x^496 + x^494 + x^492 + x^491 + x^489 + x^480 + x^478 + x^475 + x^471 + x^464 + x^461 + x^454 + x^452 + x^450 + x^446 + x^445 + x^441 + x^438 + x^437 + x^436 + x^434 + x^430 + x^429 + x^427 + x^425 + x^420 + x^418 + x^416 + x^415 + x^413 + x^411 + x^409 + x^402 + x^397 + x^394 + x^392 + x^388 + x^386 + x^384 + x^377 + x^375 + x^371 + x^368 + x^367 + x^365 + x^364 + x^363 + x^362 + x^360 + x^358 + x^356 + x^353 + x^351 + x^346 + x^342 + x^341 + x^338 + x^335 + x^333 + x^330 + x^328 + x^326 + x^325 + x^317 + x^307 + x^304 + x^300 + x^296 + x^295 + x^293 + x^292 + x^288 + x^286 + x^285 + x^284 + x^283 + x^278 + x^277 + x^276 + x^273 + x^271 + x^270 + x^262 + x^261 + x^255 + x^253 + x^249 + x^248 + x^246 + x^245 + x^240 + x^236 + x^232 + x^231 + x^227 + x^224 + x^223 + x^221 + x^220 + x^217 + x^216 + x^212 + x^208 + x^205 + x^204 + x^198 + x^196 + x^192 + x^191 + x^190 + x^189 + x^187 + x^186 + x^178 + x^176 + x^175 + x^171 + x^169 + x^165 + x^160 + x^159 + x^158 + x^154 + x^152 + x^150 + x^148 + x^146 + x^144 + x^141 + x^134 + x^132 + x^131 + x^129 + x^127 + x^125 + x^123 + x^120 + x^118 + x^114 + x^113 + x^111 + x^106 + x^104 + x^103 + x^102 + x^101 + x^100 + x^99 + x^97 + x^95 + x^93 + x^88 + x^85 + x^77 + x^67 + x^62 + x^60 + x^55 + x^54 + x^53 + x^52 + x^51 + x^50 + x^48 + x^46 + x^40 + x^37 + x^33 + x^28 + x^27 + x^24 + 1
+
+1-38-28	251	x^928 + x^898 + x^870 + x^866 + x^836 + x^834 + x^832 + x^818 + x^808 + x^806 + x^804 + x^797 + x^788 + x^778 + x^776 + x^770 + x^767 + x^765 + x^738 + x^736 + x^733 + x^724 + x^717 + x^708 + x^706 + x^703 + x^701 + x^690 + x^688 + x^685 + x^678 + x^677 + x^676 + x^674 + x^672 + x^664 + x^658 + x^656 + x^652 + x^647 + x^645 + x^640 + x^626 + x^624 + x^621 + x^620 + x^616 + x^610 + x^608 + x^604 + x^600 + x^594 + x^593 + x^592 + x^590 + x^580 + x^578 + x^576 + x^575 + x^574 + x^572 + x^568 + x^566 + x^565 + x^564 + x^562 + x^560 + x^558 + x^552 + x^550 + x^549 + x^548 + x^544 + x^541 + x^538 + x^536 + x^533 + x^532 + x^529 + x^526 + x^522 + x^520 + x^519 + x^517 + x^514 + x^513 + x^509 + x^508 + x^504 + x^501 + x^494 + x^493 + x^484 + x^482 + x^469 + x^468 + x^466 + x^461 + x^453 + x^452 + x^448 + x^447 + x^436 + x^428 + x^424 + x^422 + x^420 + x^416 + x^414 + x^413 + x^412 + x^409 + x^408 + x^406 + x^405 + x^404 + x^400 + x^399 + x^397 + x^393 + x^391 + x^388 + x^385 + x^382 + x^381 + x^376 + x^374 + x^372 + x^370 + x^368 + x^366 + x^365 + x^360 + x^350 + x^349 + x^344 + x^341 + x^340 + x^336 + x^335 + x^334 + x^333 + x^332 + x^328 + x^326 + x^322 + x^319 + x^318 + x^308 + x^304 + x^300 + x^298 + x^293 + x^292 + x^290 + x^289 + x^287 + x^284 + x^281 + x^279 + x^278 + x^272 + x^271 + x^269 + x^264 + x^263 + x^261 + x^256 + x^254 + x^253 + x^250 + x^240 + x^238 + x^234 + x^229 + x^228 + x^226 + x^223 + x^221 + x^218 + x^213 + x^210 + x^208 + x^204 + x^198 + x^197 + x^196 + x^194 + x^191 + x^188 + x^186 + x^180 + x^176 + x^174 + x^172 + x^170 + x^169 + x^167 + x^165 + x^161 + x^159 + x^157 + x^153 + x^150 + x^149 + x^148 + x^145 + x^136 + x^135 + x^134 + x^133 + x^132 + x^130 + x^128 + x^127 + x^125 + x^122 + x^120 + x^118 + x^113 + x^110 + x^109 + x^108 + x^100 + x^96 + x^94 + x^92 + x^90 + x^88 + x^86 + x^85 + x^84 + x^81 + x^80 + x^72 + x^70 + x^66 + x^58 + x^53 + x^45 + x^36 + x^34 + x^32 + x^30 + x^24 + x^20 + x^16 + x^12 + x^8 + x^2 + 1
+
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+56-43-35	433	x^928 + x^898 + x^896 + x^871 + x^870 + x^864 + x^848 + x^847 + x^846 + x^841 + x^840 + x^834 + x^833 + x^832 + x^829 + x^821 + x^814 + x^811 + x^808 + x^806 + x^803 + x^798 + x^797 + x^796 + x^792 + x^788 + x^786 + x^784 + x^783 + x^781 + x^779 + x^777 + x^776 + x^774 + x^773 + x^770 + x^769 + x^766 + x^762 + x^760 + x^756 + x^754 + x^752 + x^751 + x^749 + x^746 + x^745 + x^740 + x^737 + x^736 + x^734 + x^730 + x^727 + x^723 + x^721 + x^720 + x^718 + x^716 + x^714 + x^712 + x^709 + x^707 + x^706 + x^705 + x^704 + x^703 + x^702 + x^701 + x^700 + x^699 + x^697 + x^696 + x^695 + x^690 + x^689 + x^687 + x^685 + x^684 + x^682 + x^678 + x^675 + x^672 + x^670 + x^669 + x^668 + x^666 + x^665 + x^663 + x^662 + x^661 + x^659 + x^657 + x^655 + x^651 + x^650 + x^648 + x^646 + x^641 + x^639 + x^634 + x^632 + x^631 + x^630 + x^629 + x^626 + x^625 + x^623 + x^620 + x^619 + x^614 + x^612 + x^610 + x^609 + x^608 + x^607 + x^606 + x^604 + x^603 + x^602 + x^601 + x^600 + x^597 + x^596 + x^595 + x^594 + x^593 + x^591 + x^588 + x^585 + x^584 + x^583 + x^582 + x^581 + x^580 + x^578 + x^576 + x^574 + x^573 + x^572 + x^571 + x^570 + x^569 + x^563 + x^561 + x^560 + x^558 + x^556 + x^553 + x^552 + x^551 + x^550 + x^549 + x^546 + x^545 + x^544 + x^543 + x^542 + x^539 + x^538 + x^537 + x^536 + x^534 + x^532 + x^531 + x^529 + x^523 + x^519 + x^518 + x^517 + x^515 + x^514 + x^513 + x^512 + x^510 + x^509 + x^508 + x^503 + x^502 + x^501 + x^500 + x^499 + x^498 + x^496 + x^495 + x^494 + x^491 + x^490 + x^489 + x^487 + x^486 + x^484 + x^482 + x^481 + x^473 + x^471 + x^468 + x^466 + x^465 + x^464 + x^461 + x^460 + x^457 + x^456 + x^455 + x^453 + x^450 + x^448 + x^444 + x^442 + x^436 + x^435 + x^434 + x^433 + x^432 + x^431 + x^430 + x^429 + x^422 + x^421 + x^420 + x^419 + x^418 + x^417 + x^416 + x^414 + x^413 + x^412 + x^411 + x^409 + x^408 + x^407 + x^406 + x^404 + x^403 + x^402 + x^401 + x^398 + x^395 + x^392 + x^391 + x^389 + x^387 + x^385 + x^380 + x^377 + x^374 + x^372 + x^371 + x^369 + x^366 + x^363 + x^362 + x^361 + x^359 + x^358 + x^356 + x^355 + x^354 + x^353 + x^352 + x^350 + x^349 + x^348 + x^347 + x^345 + x^344 + x^343 + x^336 + x^334 + x^331 + x^330 + x^327 + x^325 + x^324 + x^322 + x^317 + x^310 + x^308 + x^307 + x^304 + x^301 + x^300 + x^299 + x^298 + x^297 + x^293 + x^290 + x^286 + x^284 + x^283 + x^282 + x^281 + x^279 + x^277 + x^275 + x^274 + x^270 + x^269 + x^267 + x^264 + x^262 + x^259 + x^254 + x^253 + x^248 + x^247 + x^245 + x^243 + x^242 + x^241 + x^237 + x^236 + x^232 + x^231 + x^230 + x^229 + x^228 + x^226 + x^225 + x^224 + x^223 + x^221 + x^218 + x^215 + x^214 + x^213 + x^212 + x^210 + x^208 + x^204 + x^202 + x^201 + x^199 + x^196 + x^195 + x^193 + x^192 + x^191 + x^190 + x^186 + x^184 + x^179 + x^178 + x^177 + x^176 + x^175 + x^174 + x^173 + x^171 + x^169 + x^167 + x^166 + x^165 + x^160 + x^158 + x^155 + x^154 + x^153 + x^152 + x^151 + x^150 + x^149 + x^148 + x^147 + x^145 + x^143 + x^140 + x^139 + x^138 + x^134 + x^132 + x^130 + x^129 + x^128 + x^127 + x^120 + x^118 + x^117 + x^115 + x^113 + x^112 + x^109 + x^108 + x^107 + x^106 + x^105 + x^101 + x^100 + x^96 + x^95 + x^94 + x^93 + x^91 + x^89 + x^88 + x^87 + x^85 + x^84 + x^83 + x^82 + x^81 + x^79 + x^77 + x^75 + x^74 + x^73 + x^72 + x^70 + x^68 + x^67 + x^65 + x^64 + x^63 + x^60 + x^58 + x^57 + x^56 + x^54 + x^53 + x^52 + x^50 + x^45 + x^44 + x^43 + x^41 + x^35 + x^30 + x^23 + x^20 + x^18 + x^15 + x^6 + 1
+
+44-9-45	441	x^928 + x^898 + x^890 + x^885 + x^880 + x^872 + x^870 + x^867 + x^860 + x^850 + x^847 + x^842 + x^837 + x^834 + x^830 + x^825 + x^824 + x^817 + x^816 + x^811 + x^808 + x^806 + x^802 + x^800 + x^798 + x^797 + x^794 + x^792 + x^790 + x^787 + x^786 + x^782 + x^778 + x^777 + x^776 + x^774 + x^773 + x^772 + x^771 + x^769 + x^768 + x^767 + x^765 + x^760 + x^759 + x^758 + x^757 + x^754 + x^750 + x^749 + x^747 + x^746 + x^745 + x^743 + x^741 + x^738 + x^737 + x^736 + x^734 + x^732 + x^725 + x^724 + x^722 + x^721 + x^720 + x^717 + x^716 + x^714 + x^713 + x^710 + x^708 + x^707 + x^705 + x^704 + x^702 + x^701 + x^699 + x^698 + x^696 + x^694 + x^692 + x^691 + x^690 + x^686 + x^683 + x^681 + x^679 + x^676 + x^674 + x^673 + x^672 + x^671 + x^668 + x^667 + x^665 + x^664 + x^663 + x^662 + x^661 + x^659 + x^658 + x^657 + x^655 + x^654 + x^652 + x^651 + x^648 + x^644 + x^643 + x^641 + x^640 + x^635 + x^634 + x^633 + x^632 + x^631 + x^630 + x^629 + x^628 + x^624 + x^621 + x^619 + x^618 + x^617 + x^616 + x^614 + x^611 + x^610 + x^608 + x^607 + x^599 + x^598 + x^596 + x^594 + x^590 + x^589 + x^588 + x^587 + x^586 + x^584 + x^581 + x^579 + x^578 + x^577 + x^575 + x^573 + x^572 + x^570 + x^569 + x^568 + x^567 + x^565 + x^564 + x^563 + x^562 + x^561 + x^559 + x^558 + x^554 + x^553 + x^552 + x^551 + x^549 + x^546 + x^544 + x^541 + x^537 + x^536 + x^535 + x^532 + x^531 + x^529 + x^526 + x^517 + x^516 + x^514 + x^511 + x^509 + x^507 + x^502 + x^501 + x^498 + x^497 + x^495 + x^494 + x^493 + x^491 + x^487 + x^486 + x^485 + x^484 + x^483 + x^482 + x^481 + x^480 + x^477 + x^474 + x^473 + x^470 + x^469 + x^467 + x^466 + x^465 + x^463 + x^462 + x^461 + x^460 + x^459 + x^457 + x^455 + x^454 + x^453 + x^451 + x^449 + x^448 + x^446 + x^443 + x^442 + x^440 + x^437 + x^436 + x^435 + x^434 + x^433 + x^431 + x^430 + x^427 + x^423 + x^419 + x^418 + x^414 + x^412 + x^411 + x^410 + x^409 + x^407 + x^406 + x^405 + x^402 + x^397 + x^395 + x^394 + x^389 + x^388 + x^384 + x^381 + x^380 + x^379 + x^378 + x^376 + x^373 + x^372 + x^371 + x^370 + x^368 + x^367 + x^366 + x^365 + x^364 + x^362 + x^361 + x^355 + x^354 + x^352 + x^350 + x^347 + x^345 + x^344 + x^343 + x^342 + x^339 + x^337 + x^335 + x^333 + x^332 + x^329 + x^327 + x^323 + x^322 + x^321 + x^320 + x^319 + x^316 + x^312 + x^310 + x^309 + x^308 + x^307 + x^305 + x^303 + x^302 + x^301 + x^298 + x^294 + x^293 + x^283 + x^282 + x^276 + x^275 + x^274 + x^271 + x^267 + x^264 + x^262 + x^261 + x^259 + x^258 + x^257 + x^256 + x^253 + x^252 + x^251 + x^250 + x^246 + x^245 + x^244 + x^243 + x^242 + x^241 + x^240 + x^238 + x^237 + x^236 + x^235 + x^233 + x^232 + x^229 + x^228 + x^225 + x^224 + x^223 + x^220 + x^216 + x^211 + x^210 + x^207 + x^205 + x^204 + x^202 + x^201 + x^200 + x^197 + x^196 + x^195 + x^194 + x^190 + x^189 + x^185 + x^183 + x^182 + x^181 + x^180 + x^179 + x^177 + x^176 + x^174 + x^173 + x^172 + x^171 + x^168 + x^167 + x^164 + x^163 + x^157 + x^156 + x^152 + x^151 + x^150 + x^148 + x^147 + x^146 + x^143 + x^142 + x^141 + x^140 + x^139 + x^138 + x^137 + x^135 + x^134 + x^133 + x^132 + x^129 + x^128 + x^127 + x^125 + x^122 + x^120 + x^119 + x^113 + x^112 + x^110 + x^109 + x^108 + x^107 + x^106 + x^105 + x^104 + x^101 + x^98 + x^97 + x^96 + x^93 + x^92 + x^91 + x^87 + x^83 + x^80 + x^78 + x^77 + x^74 + x^72 + x^66 + x^64 + x^63 + x^60 + x^59 + x^56 + x^51 + x^50 + x^49 + x^46 + x^43 + x^42 + x^41 + x^39 + x^38 + x^32 + x^31 + x^29 + x^28 + x^26 + x^24 + x^23 + x^21 + x^20 + x^19 + x^18 + x^15 + x^10 + 1
diff --git a/lib/stdlib/test/stdlib.spec b/lib/stdlib/test/stdlib.spec
index 9c625091a8..bf64eae2c7 100644
--- a/lib/stdlib/test/stdlib.spec
+++ b/lib/stdlib/test/stdlib.spec
@@ -1,4 +1,7 @@
 {suites,"../stdlib_test",all}.
 {skip_groups,"../stdlib_test",stdlib_bench_SUITE,
-             [base64,gen_server,gen_statem,unicode],
+             [binary,base64,gen_server,gen_statem,unicode],
+             "Benchmark only"}.
+{skip_groups,"../stdlib_test",ets_SUITE,
+             [benchmark],
              "Benchmark only"}.
diff --git a/lib/stdlib/test/stdlib_bench.spec b/lib/stdlib/test/stdlib_bench.spec
index 7a0da811a0..6d665f22b6 100644
--- a/lib/stdlib/test/stdlib_bench.spec
+++ b/lib/stdlib/test/stdlib_bench.spec
@@ -8,3 +8,4 @@
 {skip_groups,"../stdlib_test",stdlib_bench_SUITE,
              [gen_server_comparison,gen_statem_comparison],
              "Not a benchmark"}.
+{groups,"../stdlib_test",ets_SUITE,[benchmark]}.
diff --git a/lib/stdlib/test/stdlib_bench_SUITE.erl b/lib/stdlib/test/stdlib_bench_SUITE.erl
index 2364e8376f..3456442088 100644
--- a/lib/stdlib/test/stdlib_bench_SUITE.erl
+++ b/lib/stdlib/test/stdlib_bench_SUITE.erl
@@ -29,7 +29,7 @@ suite() -> [{ct_hooks,[{ts_install_cth,[{nodenames,2}]}]}].
 
 
 all() ->
-    [{group,unicode},{group,base64},
+    [{group,unicode},{group,base64},{group,binary},
      {group,gen_server},{group,gen_statem},
      {group,gen_server_comparison},{group,gen_statem_comparison}].
 
@@ -38,6 +38,13 @@ groups() ->
       [norm_nfc_list, norm_nfc_deep_l, norm_nfc_binary,
        string_lexemes_list, string_lexemes_binary
       ]},
+     %% Only run 1 binary match repeat as it is very slow pre OTP-22.
+     %% The results seem to be stable enough anyway
+     {binary, [{repeat, 1}],
+      [match_single_pattern_no_match,
+       matches_single_pattern_no_match,
+       matches_single_pattern_eventual_match,
+       matches_single_pattern_frequent_match]},
      {base64,[{repeat,5}],
       [decode_binary, decode_binary_to_string,
        decode_list, decode_list_to_string,
@@ -60,9 +67,9 @@ cases(gen_server) ->
       [simple, simple_timer, simple_mon, simple_timer_mon,
        generic, generic_timer];
 cases(gen_statem) ->
-    [generic, generic_fsm, generic_fsm_transit,
-     generic_statem, generic_statem_transit,
-     generic_statem_complex].
+    [generic, generic_log, generic_log100, generic_fsm, generic_fsm_transit,
+     generic_statem, generic_statem_log, generic_statem_log100,
+     generic_statem_transit, generic_statem_complex].
 
 init_per_group(gen_server, Config) ->
     compile_servers(Config),
@@ -157,41 +164,59 @@ norm_data(Config) ->
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
+match_single_pattern_no_match(_Config) ->
+    Binary = binary:copy(<<"ugbcfuysabfuqyfikgfsdalpaskfhgjsdgfjwsalp">>, 1000000),
+    comment(test(100, binary, match, [Binary, <<"o">>])).
+
+matches_single_pattern_no_match(_Config) ->
+    Binary = binary:copy(<<"ugbcfuysabfuqyfikgfsdalpaskfhgjsdgfjwsalp">>, 1000000),
+    comment(test(100, binary, matches, [Binary, <<"o">>])).
+
+matches_single_pattern_eventual_match(_Config) ->
+    Binary = binary:copy(<<"ugbcfuysabfuqyfikgfsdalpaskfhgjsdgfjwsal\n">>, 1000000),
+    comment(test(100, binary, matches, [Binary, <<"\n">>])).
+
+matches_single_pattern_frequent_match(_Config) ->
+    Binary = binary:copy(<<"abc\n">>, 1000000),
+    comment(test(100, binary, matches, [Binary, <<"abc">>])).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
 decode_binary(_Config) ->
-    comment(test(decode, encoded_binary())).
+    comment(test(base64, decode, [encoded_binary()])).
 
 decode_binary_to_string(_Config) ->
-    comment(test(decode_to_string, encoded_binary())).
+    comment(test(base64, decode_to_string, [encoded_binary()])).
 
 decode_list(_Config) ->
-    comment(test(decode, encoded_list())).
+    comment(test(base64, decode, [encoded_list()])).
 
 decode_list_to_string(_Config) ->
-    comment(test(decode_to_string, encoded_list())).
+    comment(test(base64, decode_to_string, [encoded_list()])).
 
 encode_binary(_Config) ->
-    comment(test(encode, binary())).
+    comment(test(base64, encode, [binary()])).
 
 encode_binary_to_string(_Config) ->
-    comment(test(encode_to_string, binary())).
+    comment(test(base64, encode_to_string, [binary()])).
 
 encode_list(_Config) ->
-    comment(test(encode, list())).
+    comment(test(base64, encode, [list()])).
 
 encode_list_to_string(_Config) ->
-    comment(test(encode_to_string, list())).
+    comment(test(base64, encode_to_string, [list()])).
 
 mime_binary_decode(_Config) ->
-    comment(test(mime_decode, encoded_binary())).
+    comment(test(base64, mime_decode, [encoded_binary()])).
 
 mime_binary_decode_to_string(_Config) ->
-    comment(test(mime_decode_to_string, encoded_binary())).
+    comment(test(base64, mime_decode_to_string, [encoded_binary()])).
 
 mime_list_decode(_Config) ->
-    comment(test(mime_decode, encoded_list())).
+    comment(test(base64, mime_decode, [encoded_list()])).
 
 mime_list_decode_to_string(_Config) ->
-    comment(test(mime_decode_to_string, encoded_list())).
+    comment(test(base64, mime_decode_to_string, [encoded_list()])).
 
 -define(SIZE, 10000).
 -define(N, 1000).
@@ -209,15 +234,17 @@ binary() ->
 list() ->
     random_byte_list(?SIZE).
 
-test(Func, Data) ->
-    F = fun() -> loop(?N, Func, Data) end,
+test(Mod, Fun, Args) ->
+    test(?N, Mod, Fun, Args).
+test(Iter, Mod, Fun, Args) ->
+    F = fun() -> loop(Iter, Mod, Fun, Args) end,
     {Time, ok} = timer:tc(fun() -> lspawn(F) end),
-    report_base64(Time).
+    report_mfa(Iter, Time, Mod).
 
-loop(0, _F, _D) -> garbage_collect(), ok;
-loop(N, F, D) ->
-    _ = base64:F(D),
-    loop(N - 1, F, D).
+loop(0, _M, _F, _A) -> garbage_collect(), ok;
+loop(N, M, F, A) ->
+    _ = apply(M, F, A),
+    loop(N - 1, M, F, A).
 
 lspawn(Fun) ->
     {Pid, Ref} = spawn_monitor(fun() -> exit(Fun()) end),
@@ -225,10 +252,10 @@ lspawn(Fun) ->
         {'DOWN', Ref, process, Pid, Rep} -> Rep
     end.
 
-report_base64(Time) ->
-    Tps = round((?N*1000000)/Time),
+report_mfa(Iter, Time, Mod) ->
+    Tps = round((Iter*1000000)/Time),
     ct_event:notify(#event{name = benchmark_data,
-                           data = [{suite, "stdlib_base64"},
+                           data = [{suite, "stdlib_" ++ atom_to_list(Mod)},
                                    {value, Tps}]}),
     Tps.
 
@@ -267,12 +294,24 @@ simple_timer_mon(Config) when is_list(Config) ->
 generic(Config) when is_list(Config) ->
     comment(do_tests(generic, single_small, Config)).
 
+generic_log(Config) when is_list(Config) ->
+    comment(do_tests(generic_log, single_small, Config)).
+
+generic_log100(Config) when is_list(Config) ->
+    comment(do_tests(generic_log100, single_small, Config)).
+
 generic_timer(Config) when is_list(Config) ->
     comment(do_tests(generic_timer, single_small, Config)).
 
 generic_statem(Config) when is_list(Config) ->
     comment(do_tests(generic_statem, single_small, Config)).
 
+generic_statem_log(Config) when is_list(Config) ->
+    comment(do_tests(generic_statem_log, single_small, Config)).
+
+generic_statem_log100(Config) when is_list(Config) ->
+    comment(do_tests(generic_statem_log100, single_small, Config)).
+
 generic_statem_transit(Config) when is_list(Config) ->
     comment(do_tests(generic_statem_transit, single_small, Config)).
 
@@ -344,9 +383,9 @@ norm(T, Ref) ->
 
 do_tests(Test, ParamSet, Config) ->
     BenchmarkSuite = ?config(benchmark_suite, Config),
-    {Client, ServerMod} = bench(Test),
+    {Client, ServerMod, ServerArg} = bench(Test),
     {Parallelism, Message} = bench_params(ParamSet),
-    Fun = create_clients(Message, ServerMod, Client, Parallelism),
+    Fun = create_clients(Message, ServerMod, ServerArg, Client, Parallelism),
     {TotalLoops, AllPidTime} = run_test(Fun),
     try ?CALLS_PER_LOOP * round((1000 * TotalLoops) / AllPidTime) of
         PerSecond ->
@@ -461,27 +500,35 @@ generic_fsm_transit_client(N, M, P) ->
     generic_fsm_transit_client(N+1, M, P).
 
 bench(simple) ->
-    {fun simple_client/3, simple_server};
+    {fun simple_client/3, simple_server, term};
 bench(simple_timer) ->
-    {fun simple_client_timer/3, simple_server_timer};
+    {fun simple_client_timer/3, simple_server_timer, term};
 bench(simple_mon) ->
-    {fun simple_client_mon/3, simple_server_mon};
+    {fun simple_client_mon/3, simple_server_mon, term};
 bench(simple_timer_mon) ->
-    {fun simple_client_timer_mon/3, simple_server_timer_mon};
+    {fun simple_client_timer_mon/3, simple_server_timer_mon, term};
 bench(generic) ->
-    {fun generic_client/3, generic_server};
+    {fun generic_client/3, generic_server, [term]};
+bench(generic_log) ->
+    {fun generic_client/3, generic_server, [term,{debug,[log]}]};
+bench(generic_log100) ->
+    {fun generic_client/3, generic_server, [term,{debug,[{log,100}]}]};
 bench(generic_timer) ->
-    {fun generic_timer_client/3, generic_server_timer};
+    {fun generic_timer_client/3, generic_server_timer, term};
 bench(generic_statem) ->
-    {fun generic_statem_client/3, generic_statem};
+    {fun generic_statem_client/3, generic_statem, [term]};
+bench(generic_statem_log) ->
+    {fun generic_statem_client/3, generic_statem, [term,{debug,[log]}]};
+bench(generic_statem_log100) ->
+    {fun generic_statem_client/3, generic_statem, [term,{debug,[{log,100}]}]};
 bench(generic_statem_transit) ->
-    {fun generic_statem_transit_client/3, generic_statem};
+    {fun generic_statem_transit_client/3, generic_statem, [term]};
 bench(generic_statem_complex) ->
-    {fun generic_statem_complex_client/3, generic_statem_complex};
+    {fun generic_statem_complex_client/3, generic_statem_complex, term};
 bench(generic_fsm) ->
-    {fun generic_fsm_client/3, generic_fsm};
+    {fun generic_fsm_client/3, generic_fsm, term};
 bench(generic_fsm_transit) ->
-    {fun generic_fsm_transit_client/3, generic_fsm}.
+    {fun generic_fsm_transit_client/3, generic_fsm, term}.
 
 %% -> {Parallelism, MessageTerm}
 bench_params(single_small) -> {1, small()};
@@ -509,10 +556,9 @@ parallelism() ->
         _ -> 1
     end.
 
-create_clients(M, ServerMod, Client, Parallel) ->
+create_clients(M, ServerMod, ServerArg, Client, Parallel) ->
     fun() ->
-            State = term,
-            ServerPid = ServerMod:start(State),
+            ServerPid = ServerMod:start(ServerArg),
             PidRefs = [spawn_monitor(fun() -> Client(0, M, ServerPid) end) ||
                           _ <- lists:seq(1, Parallel)],
             timer:sleep(?MAX_TIME),
diff --git a/lib/stdlib/test/stdlib_bench_SUITE_data/generic_server.erl b/lib/stdlib/test/stdlib_bench_SUITE_data/generic_server.erl
index abd61dcdef..3707d00dee 100644
--- a/lib/stdlib/test/stdlib_bench_SUITE_data/generic_server.erl
+++ b/lib/stdlib/test/stdlib_bench_SUITE_data/generic_server.erl
@@ -8,8 +8,8 @@
 
 -define(GEN_SERVER, gen_server).
 
-start(State) ->
-    {ok, Pid} = ?GEN_SERVER:start(?MODULE, State, []),
+start([State|Opts]) ->
+    {ok, Pid} = ?GEN_SERVER:start(?MODULE, State, Opts),
     Pid.
 
 init(State) ->
diff --git a/lib/stdlib/test/stdlib_bench_SUITE_data/generic_statem.erl b/lib/stdlib/test/stdlib_bench_SUITE_data/generic_statem.erl
index 2e0491f060..b106619568 100644
--- a/lib/stdlib/test/stdlib_bench_SUITE_data/generic_statem.erl
+++ b/lib/stdlib/test/stdlib_bench_SUITE_data/generic_statem.erl
@@ -28,8 +28,8 @@
 
 %% API
 
-start(Data) ->
-    {ok, Pid} = gen_statem:start(?MODULE, Data, []),
+start([Data|Opts]) ->
+    {ok, Pid} = gen_statem:start(?MODULE, Data, Opts),
     Pid.
 
 stop(P) ->
@@ -52,7 +52,9 @@ init(Data) ->
 state1({call, From}, {reply, M}, Data) ->
     {keep_state, Data, {reply, From, M}};
 state1({call, From}, {transit, M}, Data) ->
-    {next_state, state2, Data, {reply, From, M}}.
+    {next_state, state2, Data,
+     [{reply, From, M},{state_timeout,5000,5000}]}.
 
 state2({call, From}, {transit, M}, Data) ->
-    {next_state, state1, Data, {reply, From, M}}.
+    {next_state, state1, Data,
+     [{reply, From, M},{state_timeout,5000,5000}]}.
diff --git a/lib/stdlib/test/string_SUITE.erl b/lib/stdlib/test/string_SUITE.erl
index 251e09121c..248912c3f2 100644
--- a/lib/stdlib/test/string_SUITE.erl
+++ b/lib/stdlib/test/string_SUITE.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2004-2018. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2019. All Rights Reserved.
 %% 
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -754,19 +754,22 @@ do_measure(DataDir) ->
     io:format("~p~n",[byte_size(Bin)]),
     Do = fun(Name, Func, Mode) ->
                  {N, Mean, Stddev, _} = time_func(Func, Mode, Bin, 20),
-                 io:format("~15w ~6w ~6.2fms ±~5.2fms #~.2w gc included~n",
+                 io:format("~15w ~15w ~8.2fms ±~6.2fms #~.2w gc included~n",
                            [Name, Mode, Mean/1000, Stddev/1000, N])
          end,
     Do2 = fun(Name, Func, Mode) ->
                   {N, Mean, Stddev, _} = time_func(Func, binary, <<>>, 20),
-                  io:format("~15w ~6w ~6.2fms ±~5.2fms #~.2w gc included~n",
+                  io:format("~15w ~15w ~8.2fms ±~6.2fms #~.2w gc included~n",
                             [Name, Mode, Mean/1000, Stddev/1000, N])
           end,
+    %% lefty_list means a list balanced to the left, like
+    %% [[[30],31],32]. Only some functions check such lists.
+    Modes = [list, lefty_list, binary, {many_lists,1}, {many_lists, 4}],
     io:format("----------------------~n"),
 
     Do(old_tokens, fun(Str) -> string:tokens(Str, [$\n,$\r]) end, list),
     Tokens = {lexemes, fun(Str) -> string:lexemes(Str, [$\n,$\r]) end},
-    [Do(Name,Fun,Mode) || {Name,Fun} <- [Tokens], Mode <- [list, binary]],
+    [Do(Name,Fun,Mode) || {Name,Fun} <- [Tokens], Mode <- Modes],
 
     S0 = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxy.....",
     S0B = <<"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxy.....">>,
@@ -824,17 +827,17 @@ do_measure(DataDir) ->
 
     io:format("--~n",[]),
     NthTokens = {nth_lexemes, fun(Str) -> string:nth_lexeme(Str, 18000, [$\n,$\r]) end},
-    [Do(Name,Fun,Mode) || {Name,Fun} <- [NthTokens], Mode <- [list, binary]],
+    [Do(Name,Fun,Mode) || {Name,Fun} <- [NthTokens], Mode <- Modes],
     Do2(take_t, repeat(fun() -> string:take(S0, [$.,$y], false, trailing) end), list),
     Do2(take_t, repeat(fun() -> string:take(S0B, [$.,$y], false, trailing) end), binary),
     Do2(take_tc, repeat(fun() -> string:take(S0, [$x], true, trailing) end), list),
     Do2(take_tc, repeat(fun() -> string:take(S0B, [$x], true, trailing) end), binary),
 
     Length = {length, fun(Str) -> string:length(Str) end},
-    [Do(Name,Fun,Mode) || {Name,Fun} <- [Length], Mode <- [list, binary]],
+    [Do(Name,Fun,Mode) || {Name,Fun} <- [Length], Mode <- Modes],
 
     Reverse = {reverse, fun(Str) -> string:reverse(Str) end},
-    [Do(Name,Fun,Mode) || {Name,Fun} <- [Reverse], Mode <- [list, binary]],
+    [Do(Name,Fun,Mode) || {Name,Fun} <- [Reverse], Mode <- Modes],
 
     ok.
 
@@ -1064,7 +1067,33 @@ time_func(N,Sum,SumSq, _, _, Res, _) ->
     {N, Mean, Stdev, Res}.
 
 mode(binary, Bin) -> Bin;
-mode(list, Bin) -> unicode:characters_to_list(Bin).
+mode(list, Bin) -> unicode:characters_to_list(Bin);
+mode(lefty_list, Bin) ->
+    L = unicode:characters_to_list(Bin),
+    to_left(L);
+mode({many_lists, N}, Bin) ->
+    group(unicode:characters_to_list(Bin), N).
+
+group([], _N) ->
+    [];
+group(L, N) ->
+    try lists:split(N, L) of
+        {L1, L2} ->
+            [L1 | group(L2, N)]
+    catch
+        _:_ ->
+            [L]
+    end.
+
+to_left([]) ->
+    [];
+to_left([H|L]) ->
+    to_left([H], L).
+
+to_left(V, []) ->
+    V;
+to_left(V, [H|L]) ->
+    to_left([V,H], L).
 
 %%
 %% Old string lists Test cases starts here.
diff --git a/lib/stdlib/test/unicode_util_SUITE_data/GraphemeBreakTest.txt b/lib/stdlib/test/unicode_util_SUITE_data/GraphemeBreakTest.txt
index d7d8f90de0..6847953c23 100644
--- a/lib/stdlib/test/unicode_util_SUITE_data/GraphemeBreakTest.txt
+++ b/lib/stdlib/test/unicode_util_SUITE_data/GraphemeBreakTest.txt
@@ -1,6 +1,6 @@
-# GraphemeBreakTest-10.0.0.txt
-# Date: 2017-04-14, 05:40:29 GMT
-# © 2017 Unicode®, Inc.
+# GraphemeBreakTest-11.0.0.txt
+# Date: 2018-03-18, 13:30:33 GMT
+# © 2018 Unicode®, Inc.
 # Unicode and the Unicode Logo are registered trademarks of Unicode, Inc. in the U.S. and other countries.
 # For terms of use, see http://www.unicode.org/terms_of_use.html
 #
@@ -23,828 +23,678 @@
 # These samples may be extended or changed in the future.
 #
 ÷ 0020 ÷ 0020 ÷	#  ÷ [0.2] SPACE (Other) ÷ [999.0] SPACE (Other) ÷ [0.3]
-÷ 0020 × 0308 ÷ 0020 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 0020 × 0308 ÷ 0020 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
 ÷ 0020 ÷ 000D ÷	#  ÷ [0.2] SPACE (Other) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
-÷ 0020 × 0308 ÷ 000D ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 0020 × 0308 ÷ 000D ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
 ÷ 0020 ÷ 000A ÷	#  ÷ [0.2] SPACE (Other) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
-÷ 0020 × 0308 ÷ 000A ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 0020 × 0308 ÷ 000A ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
 ÷ 0020 ÷ 0001 ÷	#  ÷ [0.2] SPACE (Other) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ 0020 × 0308 ÷ 0001 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ 0020 × 0300 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
-÷ 0020 × 0308 × 0300 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend) × [9.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
+÷ 0020 × 0308 ÷ 0001 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 0020 × 034F ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 0020 × 0308 × 034F ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 0020 ÷ 1F1E6 ÷	#  ÷ [0.2] SPACE (Other) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 0020 × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
 ÷ 0020 ÷ 0600 ÷	#  ÷ [0.2] SPACE (Other) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
-÷ 0020 × 0308 ÷ 0600 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 0020 × 0308 ÷ 0600 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
 ÷ 0020 × 0903 ÷	#  ÷ [0.2] SPACE (Other) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
-÷ 0020 × 0308 × 0903 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 0020 × 0308 × 0903 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
 ÷ 0020 ÷ 1100 ÷	#  ÷ [0.2] SPACE (Other) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
-÷ 0020 × 0308 ÷ 1100 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 0020 × 0308 ÷ 1100 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
 ÷ 0020 ÷ 1160 ÷	#  ÷ [0.2] SPACE (Other) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
-÷ 0020 × 0308 ÷ 1160 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 0020 × 0308 ÷ 1160 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
 ÷ 0020 ÷ 11A8 ÷	#  ÷ [0.2] SPACE (Other) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
-÷ 0020 × 0308 ÷ 11A8 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 0020 × 0308 ÷ 11A8 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
 ÷ 0020 ÷ AC00 ÷	#  ÷ [0.2] SPACE (Other) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
-÷ 0020 × 0308 ÷ AC00 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 0020 × 0308 ÷ AC00 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
 ÷ 0020 ÷ AC01 ÷	#  ÷ [0.2] SPACE (Other) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ 0020 × 0308 ÷ AC01 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ 0020 ÷ 1F1E6 ÷	#  ÷ [0.2] SPACE (Other) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ 0020 × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ 0020 ÷ 261D ÷	#  ÷ [0.2] SPACE (Other) ÷ [999.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ 0020 × 0308 ÷ 261D ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ 0020 ÷ 1F3FB ÷	#  ÷ [0.2] SPACE (Other) ÷ [999.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ 0020 × 0308 ÷ 1F3FB ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ 0020 × 200D ÷	#  ÷ [0.2] SPACE (Other) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ 0020 × 0308 × 200D ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ 0020 ÷ 2640 ÷	#  ÷ [0.2] SPACE (Other) ÷ [999.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ 0020 × 0308 ÷ 2640 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ 0020 ÷ 1F466 ÷	#  ÷ [0.2] SPACE (Other) ÷ [999.0] BOY (EBG) ÷ [0.3]
-÷ 0020 × 0308 ÷ 1F466 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] BOY (EBG) ÷ [0.3]
+÷ 0020 × 0308 ÷ AC01 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 0020 ÷ 231A ÷	#  ÷ [0.2] SPACE (Other) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 0020 × 0308 ÷ 231A ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 0020 × 0300 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 0020 × 0308 × 0300 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 0020 × 200D ÷	#  ÷ [0.2] SPACE (Other) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 0020 × 0308 × 200D ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
 ÷ 0020 ÷ 0378 ÷	#  ÷ [0.2] SPACE (Other) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
-÷ 0020 × 0308 ÷ 0378 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 0020 × 0308 ÷ 0378 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
 ÷ 0020 ÷ D800 ÷	#  ÷ [0.2] SPACE (Other) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
-÷ 0020 × 0308 ÷ D800 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
+÷ 0020 × 0308 ÷ D800 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
 ÷ 000D ÷ 0020 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] SPACE (Other) ÷ [0.3]
-÷ 000D ÷ 0308 ÷ 0020 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 000D ÷ 0308 ÷ 0020 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
 ÷ 000D ÷ 000D ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
-÷ 000D ÷ 0308 ÷ 000D ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 000D ÷ 0308 ÷ 000D ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
 ÷ 000D × 000A ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) × [3.0] <LINE FEED (LF)> (LF) ÷ [0.3]
-÷ 000D ÷ 0308 ÷ 000A ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 000D ÷ 0308 ÷ 000A ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
 ÷ 000D ÷ 0001 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ 000D ÷ 0308 ÷ 0001 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ 000D ÷ 0300 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
-÷ 000D ÷ 0308 × 0300 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend) × [9.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
+÷ 000D ÷ 0308 ÷ 0001 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 000D ÷ 034F ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 000D ÷ 0308 × 034F ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 000D ÷ 1F1E6 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 000D ÷ 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
 ÷ 000D ÷ 0600 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
-÷ 000D ÷ 0308 ÷ 0600 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 000D ÷ 0308 ÷ 0600 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
 ÷ 000D ÷ 0903 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
-÷ 000D ÷ 0308 × 0903 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 000D ÷ 0308 × 0903 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
 ÷ 000D ÷ 1100 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
-÷ 000D ÷ 0308 ÷ 1100 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 000D ÷ 0308 ÷ 1100 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
 ÷ 000D ÷ 1160 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
-÷ 000D ÷ 0308 ÷ 1160 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 000D ÷ 0308 ÷ 1160 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
 ÷ 000D ÷ 11A8 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
-÷ 000D ÷ 0308 ÷ 11A8 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 000D ÷ 0308 ÷ 11A8 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
 ÷ 000D ÷ AC00 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
-÷ 000D ÷ 0308 ÷ AC00 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 000D ÷ 0308 ÷ AC00 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
 ÷ 000D ÷ AC01 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ 000D ÷ 0308 ÷ AC01 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ 000D ÷ 1F1E6 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ 000D ÷ 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ 000D ÷ 261D ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ 000D ÷ 0308 ÷ 261D ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ 000D ÷ 1F3FB ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ 000D ÷ 0308 ÷ 1F3FB ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ 000D ÷ 200D ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ 000D ÷ 0308 × 200D ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ 000D ÷ 2640 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ 000D ÷ 0308 ÷ 2640 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ 000D ÷ 1F466 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] BOY (EBG) ÷ [0.3]
-÷ 000D ÷ 0308 ÷ 1F466 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] BOY (EBG) ÷ [0.3]
+÷ 000D ÷ 0308 ÷ AC01 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 000D ÷ 231A ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] WATCH (ExtPict) ÷ [0.3]
+÷ 000D ÷ 0308 ÷ 231A ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 000D ÷ 0300 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 000D ÷ 0308 × 0300 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 000D ÷ 200D ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 000D ÷ 0308 × 200D ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
 ÷ 000D ÷ 0378 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] <reserved-0378> (Other) ÷ [0.3]
-÷ 000D ÷ 0308 ÷ 0378 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 000D ÷ 0308 ÷ 0378 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
 ÷ 000D ÷ D800 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] <surrogate-D800> (Control) ÷ [0.3]
-÷ 000D ÷ 0308 ÷ D800 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
+÷ 000D ÷ 0308 ÷ D800 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
 ÷ 000A ÷ 0020 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] SPACE (Other) ÷ [0.3]
-÷ 000A ÷ 0308 ÷ 0020 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 000A ÷ 0308 ÷ 0020 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
 ÷ 000A ÷ 000D ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
-÷ 000A ÷ 0308 ÷ 000D ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 000A ÷ 0308 ÷ 000D ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
 ÷ 000A ÷ 000A ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] <LINE FEED (LF)> (LF) ÷ [0.3]
-÷ 000A ÷ 0308 ÷ 000A ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 000A ÷ 0308 ÷ 000A ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
 ÷ 000A ÷ 0001 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ 000A ÷ 0308 ÷ 0001 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ 000A ÷ 0300 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
-÷ 000A ÷ 0308 × 0300 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend) × [9.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
+÷ 000A ÷ 0308 ÷ 0001 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 000A ÷ 034F ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 000A ÷ 0308 × 034F ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 000A ÷ 1F1E6 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 000A ÷ 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
 ÷ 000A ÷ 0600 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
-÷ 000A ÷ 0308 ÷ 0600 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 000A ÷ 0308 ÷ 0600 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
 ÷ 000A ÷ 0903 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
-÷ 000A ÷ 0308 × 0903 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 000A ÷ 0308 × 0903 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
 ÷ 000A ÷ 1100 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
-÷ 000A ÷ 0308 ÷ 1100 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 000A ÷ 0308 ÷ 1100 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
 ÷ 000A ÷ 1160 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
-÷ 000A ÷ 0308 ÷ 1160 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 000A ÷ 0308 ÷ 1160 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
 ÷ 000A ÷ 11A8 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
-÷ 000A ÷ 0308 ÷ 11A8 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 000A ÷ 0308 ÷ 11A8 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
 ÷ 000A ÷ AC00 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
-÷ 000A ÷ 0308 ÷ AC00 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 000A ÷ 0308 ÷ AC00 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
 ÷ 000A ÷ AC01 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ 000A ÷ 0308 ÷ AC01 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ 000A ÷ 1F1E6 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ 000A ÷ 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ 000A ÷ 261D ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ 000A ÷ 0308 ÷ 261D ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ 000A ÷ 1F3FB ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ 000A ÷ 0308 ÷ 1F3FB ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ 000A ÷ 200D ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ 000A ÷ 0308 × 200D ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ 000A ÷ 2640 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ 000A ÷ 0308 ÷ 2640 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ 000A ÷ 1F466 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] BOY (EBG) ÷ [0.3]
-÷ 000A ÷ 0308 ÷ 1F466 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] BOY (EBG) ÷ [0.3]
+÷ 000A ÷ 0308 ÷ AC01 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 000A ÷ 231A ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] WATCH (ExtPict) ÷ [0.3]
+÷ 000A ÷ 0308 ÷ 231A ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 000A ÷ 0300 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 000A ÷ 0308 × 0300 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 000A ÷ 200D ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 000A ÷ 0308 × 200D ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
 ÷ 000A ÷ 0378 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] <reserved-0378> (Other) ÷ [0.3]
-÷ 000A ÷ 0308 ÷ 0378 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 000A ÷ 0308 ÷ 0378 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
 ÷ 000A ÷ D800 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] <surrogate-D800> (Control) ÷ [0.3]
-÷ 000A ÷ 0308 ÷ D800 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
+÷ 000A ÷ 0308 ÷ D800 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
 ÷ 0001 ÷ 0020 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] SPACE (Other) ÷ [0.3]
-÷ 0001 ÷ 0308 ÷ 0020 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 0001 ÷ 0308 ÷ 0020 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
 ÷ 0001 ÷ 000D ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
-÷ 0001 ÷ 0308 ÷ 000D ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 0001 ÷ 0308 ÷ 000D ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
 ÷ 0001 ÷ 000A ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] <LINE FEED (LF)> (LF) ÷ [0.3]
-÷ 0001 ÷ 0308 ÷ 000A ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 0001 ÷ 0308 ÷ 000A ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
 ÷ 0001 ÷ 0001 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ 0001 ÷ 0308 ÷ 0001 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ 0001 ÷ 0300 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
-÷ 0001 ÷ 0308 × 0300 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) × [9.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
+÷ 0001 ÷ 0308 ÷ 0001 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 0001 ÷ 034F ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 0001 ÷ 0308 × 034F ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 0001 ÷ 1F1E6 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 0001 ÷ 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
 ÷ 0001 ÷ 0600 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
-÷ 0001 ÷ 0308 ÷ 0600 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 0001 ÷ 0308 ÷ 0600 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
 ÷ 0001 ÷ 0903 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
-÷ 0001 ÷ 0308 × 0903 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 0001 ÷ 0308 × 0903 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
 ÷ 0001 ÷ 1100 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
-÷ 0001 ÷ 0308 ÷ 1100 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 0001 ÷ 0308 ÷ 1100 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
 ÷ 0001 ÷ 1160 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
-÷ 0001 ÷ 0308 ÷ 1160 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 0001 ÷ 0308 ÷ 1160 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
 ÷ 0001 ÷ 11A8 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
-÷ 0001 ÷ 0308 ÷ 11A8 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 0001 ÷ 0308 ÷ 11A8 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
 ÷ 0001 ÷ AC00 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
-÷ 0001 ÷ 0308 ÷ AC00 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 0001 ÷ 0308 ÷ AC00 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
 ÷ 0001 ÷ AC01 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ 0001 ÷ 0308 ÷ AC01 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ 0001 ÷ 1F1E6 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ 0001 ÷ 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ 0001 ÷ 261D ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ 0001 ÷ 0308 ÷ 261D ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ 0001 ÷ 1F3FB ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ 0001 ÷ 0308 ÷ 1F3FB ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ 0001 ÷ 200D ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ 0001 ÷ 0308 × 200D ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ 0001 ÷ 2640 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ 0001 ÷ 0308 ÷ 2640 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ 0001 ÷ 1F466 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] BOY (EBG) ÷ [0.3]
-÷ 0001 ÷ 0308 ÷ 1F466 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] BOY (EBG) ÷ [0.3]
+÷ 0001 ÷ 0308 ÷ AC01 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 0001 ÷ 231A ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] WATCH (ExtPict) ÷ [0.3]
+÷ 0001 ÷ 0308 ÷ 231A ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 0001 ÷ 0300 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 0001 ÷ 0308 × 0300 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 0001 ÷ 200D ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 0001 ÷ 0308 × 200D ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
 ÷ 0001 ÷ 0378 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] <reserved-0378> (Other) ÷ [0.3]
-÷ 0001 ÷ 0308 ÷ 0378 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 0001 ÷ 0308 ÷ 0378 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
 ÷ 0001 ÷ D800 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] <surrogate-D800> (Control) ÷ [0.3]
-÷ 0001 ÷ 0308 ÷ D800 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
-÷ 0300 ÷ 0020 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) ÷ [999.0] SPACE (Other) ÷ [0.3]
-÷ 0300 × 0308 ÷ 0020 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] SPACE (Other) ÷ [0.3]
-÷ 0300 ÷ 000D ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
-÷ 0300 × 0308 ÷ 000D ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
-÷ 0300 ÷ 000A ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
-÷ 0300 × 0308 ÷ 000A ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
-÷ 0300 ÷ 0001 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ 0300 × 0308 ÷ 0001 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ 0300 × 0300 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) × [9.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
-÷ 0300 × 0308 × 0300 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) × [9.0] COMBINING DIAERESIS (Extend) × [9.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
-÷ 0300 ÷ 0600 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
-÷ 0300 × 0308 ÷ 0600 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
-÷ 0300 × 0903 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
-÷ 0300 × 0308 × 0903 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) × [9.0] COMBINING DIAERESIS (Extend) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
-÷ 0300 ÷ 1100 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
-÷ 0300 × 0308 ÷ 1100 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
-÷ 0300 ÷ 1160 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
-÷ 0300 × 0308 ÷ 1160 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
-÷ 0300 ÷ 11A8 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
-÷ 0300 × 0308 ÷ 11A8 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
-÷ 0300 ÷ AC00 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
-÷ 0300 × 0308 ÷ AC00 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
-÷ 0300 ÷ AC01 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ 0300 × 0308 ÷ AC01 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ 0300 ÷ 1F1E6 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ 0300 × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ 0300 ÷ 261D ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) ÷ [999.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ 0300 × 0308 ÷ 261D ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ 0300 ÷ 1F3FB ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) ÷ [999.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ 0300 × 0308 ÷ 1F3FB ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ 0300 × 200D ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ 0300 × 0308 × 200D ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) × [9.0] COMBINING DIAERESIS (Extend) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ 0300 ÷ 2640 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) ÷ [999.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ 0300 × 0308 ÷ 2640 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ 0300 ÷ 1F466 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) ÷ [999.0] BOY (EBG) ÷ [0.3]
-÷ 0300 × 0308 ÷ 1F466 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] BOY (EBG) ÷ [0.3]
-÷ 0300 ÷ 0378 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
-÷ 0300 × 0308 ÷ 0378 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
-÷ 0300 ÷ D800 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
-÷ 0300 × 0308 ÷ D800 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
+÷ 0001 ÷ 0308 ÷ D800 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
+÷ 034F ÷ 0020 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 034F × 0308 ÷ 0020 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 034F ÷ 000D ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 034F × 0308 ÷ 000D ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 034F ÷ 000A ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 034F × 0308 ÷ 000A ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 034F ÷ 0001 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 034F × 0308 ÷ 0001 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 034F × 034F ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 034F × 0308 × 034F ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 034F ÷ 1F1E6 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 034F × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 034F ÷ 0600 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 034F × 0308 ÷ 0600 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 034F × 0903 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 034F × 0308 × 0903 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 034F ÷ 1100 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 034F × 0308 ÷ 1100 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 034F ÷ 1160 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 034F × 0308 ÷ 1160 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 034F ÷ 11A8 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 034F × 0308 ÷ 11A8 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 034F ÷ AC00 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 034F × 0308 ÷ AC00 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 034F ÷ AC01 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 034F × 0308 ÷ AC01 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 034F ÷ 231A ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 034F × 0308 ÷ 231A ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 034F × 0300 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 034F × 0308 × 0300 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 034F × 200D ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 034F × 0308 × 200D ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 034F ÷ 0378 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 034F × 0308 ÷ 0378 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 034F ÷ D800 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
+÷ 034F × 0308 ÷ D800 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
+÷ 1F1E6 ÷ 0020 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 1F1E6 × 0308 ÷ 0020 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 1F1E6 ÷ 000D ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 1F1E6 × 0308 ÷ 000D ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 1F1E6 ÷ 000A ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 1F1E6 × 0308 ÷ 000A ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 1F1E6 ÷ 0001 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 1F1E6 × 0308 ÷ 0001 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 1F1E6 × 034F ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 1F1E6 × 0308 × 034F ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 1F1E6 × 1F1E6 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [12.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 1F1E6 × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 1F1E6 ÷ 0600 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 1F1E6 × 0308 ÷ 0600 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 1F1E6 × 0903 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 1F1E6 × 0308 × 0903 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 1F1E6 ÷ 1100 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 1F1E6 × 0308 ÷ 1100 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 1F1E6 ÷ 1160 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 1F1E6 × 0308 ÷ 1160 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 1F1E6 ÷ 11A8 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 1F1E6 × 0308 ÷ 11A8 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 1F1E6 ÷ AC00 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 1F1E6 × 0308 ÷ AC00 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 1F1E6 ÷ AC01 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 1F1E6 × 0308 ÷ AC01 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 1F1E6 ÷ 231A ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 1F1E6 × 0308 ÷ 231A ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 1F1E6 × 0300 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 1F1E6 × 0308 × 0300 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 1F1E6 × 200D ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 1F1E6 × 0308 × 200D ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 1F1E6 ÷ 0378 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 1F1E6 × 0308 ÷ 0378 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 1F1E6 ÷ D800 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
+÷ 1F1E6 × 0308 ÷ D800 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
 ÷ 0600 × 0020 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.2] SPACE (Other) ÷ [0.3]
-÷ 0600 × 0308 ÷ 0020 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 0600 × 0308 ÷ 0020 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
 ÷ 0600 ÷ 000D ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
-÷ 0600 × 0308 ÷ 000D ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 0600 × 0308 ÷ 000D ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
 ÷ 0600 ÷ 000A ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
-÷ 0600 × 0308 ÷ 000A ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 0600 × 0308 ÷ 000A ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
 ÷ 0600 ÷ 0001 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ 0600 × 0308 ÷ 0001 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ 0600 × 0300 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
-÷ 0600 × 0308 × 0300 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend) × [9.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
+÷ 0600 × 0308 ÷ 0001 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 0600 × 034F ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 0600 × 0308 × 034F ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 0600 × 1F1E6 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 0600 × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
 ÷ 0600 × 0600 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.2] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
-÷ 0600 × 0308 ÷ 0600 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 0600 × 0308 ÷ 0600 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
 ÷ 0600 × 0903 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
-÷ 0600 × 0308 × 0903 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 0600 × 0308 × 0903 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
 ÷ 0600 × 1100 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.2] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
-÷ 0600 × 0308 ÷ 1100 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 0600 × 0308 ÷ 1100 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
 ÷ 0600 × 1160 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.2] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
-÷ 0600 × 0308 ÷ 1160 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 0600 × 0308 ÷ 1160 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
 ÷ 0600 × 11A8 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.2] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
-÷ 0600 × 0308 ÷ 11A8 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 0600 × 0308 ÷ 11A8 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
 ÷ 0600 × AC00 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.2] HANGUL SYLLABLE GA (LV) ÷ [0.3]
-÷ 0600 × 0308 ÷ AC00 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 0600 × 0308 ÷ AC00 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
 ÷ 0600 × AC01 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.2] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ 0600 × 0308 ÷ AC01 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ 0600 × 1F1E6 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ 0600 × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ 0600 × 261D ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.2] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ 0600 × 0308 ÷ 261D ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ 0600 × 1F3FB ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ 0600 × 0308 ÷ 1F3FB ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ 0600 × 200D ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ 0600 × 0308 × 200D ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ 0600 × 2640 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.2] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ 0600 × 0308 ÷ 2640 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ 0600 × 1F466 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.2] BOY (EBG) ÷ [0.3]
-÷ 0600 × 0308 ÷ 1F466 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] BOY (EBG) ÷ [0.3]
+÷ 0600 × 0308 ÷ AC01 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 0600 × 231A ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.2] WATCH (ExtPict) ÷ [0.3]
+÷ 0600 × 0308 ÷ 231A ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 0600 × 0300 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 0600 × 0308 × 0300 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 0600 × 200D ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 0600 × 0308 × 200D ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
 ÷ 0600 × 0378 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.2] <reserved-0378> (Other) ÷ [0.3]
-÷ 0600 × 0308 ÷ 0378 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 0600 × 0308 ÷ 0378 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
 ÷ 0600 ÷ D800 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
-÷ 0600 × 0308 ÷ D800 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
+÷ 0600 × 0308 ÷ D800 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
 ÷ 0903 ÷ 0020 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [999.0] SPACE (Other) ÷ [0.3]
-÷ 0903 × 0308 ÷ 0020 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 0903 × 0308 ÷ 0020 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
 ÷ 0903 ÷ 000D ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
-÷ 0903 × 0308 ÷ 000D ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 0903 × 0308 ÷ 000D ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
 ÷ 0903 ÷ 000A ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
-÷ 0903 × 0308 ÷ 000A ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 0903 × 0308 ÷ 000A ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
 ÷ 0903 ÷ 0001 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ 0903 × 0308 ÷ 0001 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ 0903 × 0300 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
-÷ 0903 × 0308 × 0300 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend) × [9.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
+÷ 0903 × 0308 ÷ 0001 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 0903 × 034F ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 0903 × 0308 × 034F ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 0903 ÷ 1F1E6 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 0903 × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
 ÷ 0903 ÷ 0600 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
-÷ 0903 × 0308 ÷ 0600 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 0903 × 0308 ÷ 0600 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
 ÷ 0903 × 0903 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
-÷ 0903 × 0308 × 0903 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 0903 × 0308 × 0903 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
 ÷ 0903 ÷ 1100 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
-÷ 0903 × 0308 ÷ 1100 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 0903 × 0308 ÷ 1100 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
 ÷ 0903 ÷ 1160 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
-÷ 0903 × 0308 ÷ 1160 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 0903 × 0308 ÷ 1160 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
 ÷ 0903 ÷ 11A8 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
-÷ 0903 × 0308 ÷ 11A8 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 0903 × 0308 ÷ 11A8 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
 ÷ 0903 ÷ AC00 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
-÷ 0903 × 0308 ÷ AC00 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 0903 × 0308 ÷ AC00 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
 ÷ 0903 ÷ AC01 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ 0903 × 0308 ÷ AC01 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ 0903 ÷ 1F1E6 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ 0903 × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ 0903 ÷ 261D ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [999.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ 0903 × 0308 ÷ 261D ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ 0903 ÷ 1F3FB ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [999.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ 0903 × 0308 ÷ 1F3FB ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ 0903 × 200D ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ 0903 × 0308 × 200D ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ 0903 ÷ 2640 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [999.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ 0903 × 0308 ÷ 2640 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ 0903 ÷ 1F466 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [999.0] BOY (EBG) ÷ [0.3]
-÷ 0903 × 0308 ÷ 1F466 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] BOY (EBG) ÷ [0.3]
+÷ 0903 × 0308 ÷ AC01 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 0903 ÷ 231A ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 0903 × 0308 ÷ 231A ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 0903 × 0300 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 0903 × 0308 × 0300 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 0903 × 200D ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 0903 × 0308 × 200D ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
 ÷ 0903 ÷ 0378 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
-÷ 0903 × 0308 ÷ 0378 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 0903 × 0308 ÷ 0378 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
 ÷ 0903 ÷ D800 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
-÷ 0903 × 0308 ÷ D800 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
+÷ 0903 × 0308 ÷ D800 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
 ÷ 1100 ÷ 0020 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) ÷ [999.0] SPACE (Other) ÷ [0.3]
-÷ 1100 × 0308 ÷ 0020 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 1100 × 0308 ÷ 0020 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
 ÷ 1100 ÷ 000D ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
-÷ 1100 × 0308 ÷ 000D ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 1100 × 0308 ÷ 000D ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
 ÷ 1100 ÷ 000A ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
-÷ 1100 × 0308 ÷ 000A ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 1100 × 0308 ÷ 000A ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
 ÷ 1100 ÷ 0001 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ 1100 × 0308 ÷ 0001 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ 1100 × 0300 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
-÷ 1100 × 0308 × 0300 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend) × [9.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
+÷ 1100 × 0308 ÷ 0001 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 1100 × 034F ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 1100 × 0308 × 034F ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 1100 ÷ 1F1E6 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 1100 × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
 ÷ 1100 ÷ 0600 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
-÷ 1100 × 0308 ÷ 0600 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 1100 × 0308 ÷ 0600 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
 ÷ 1100 × 0903 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
-÷ 1100 × 0308 × 0903 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 1100 × 0308 × 0903 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
 ÷ 1100 × 1100 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [6.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
-÷ 1100 × 0308 ÷ 1100 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 1100 × 0308 ÷ 1100 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
 ÷ 1100 × 1160 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [6.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
-÷ 1100 × 0308 ÷ 1160 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 1100 × 0308 ÷ 1160 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
 ÷ 1100 ÷ 11A8 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
-÷ 1100 × 0308 ÷ 11A8 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 1100 × 0308 ÷ 11A8 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
 ÷ 1100 × AC00 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [6.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
-÷ 1100 × 0308 ÷ AC00 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 1100 × 0308 ÷ AC00 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
 ÷ 1100 × AC01 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [6.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ 1100 × 0308 ÷ AC01 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ 1100 ÷ 1F1E6 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ 1100 × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ 1100 ÷ 261D ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) ÷ [999.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ 1100 × 0308 ÷ 261D ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ 1100 ÷ 1F3FB ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) ÷ [999.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ 1100 × 0308 ÷ 1F3FB ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ 1100 × 200D ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ 1100 × 0308 × 200D ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ 1100 ÷ 2640 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) ÷ [999.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ 1100 × 0308 ÷ 2640 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ 1100 ÷ 1F466 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) ÷ [999.0] BOY (EBG) ÷ [0.3]
-÷ 1100 × 0308 ÷ 1F466 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] BOY (EBG) ÷ [0.3]
+÷ 1100 × 0308 ÷ AC01 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 1100 ÷ 231A ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 1100 × 0308 ÷ 231A ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 1100 × 0300 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 1100 × 0308 × 0300 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 1100 × 200D ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 1100 × 0308 × 200D ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
 ÷ 1100 ÷ 0378 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
-÷ 1100 × 0308 ÷ 0378 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 1100 × 0308 ÷ 0378 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
 ÷ 1100 ÷ D800 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
-÷ 1100 × 0308 ÷ D800 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
+÷ 1100 × 0308 ÷ D800 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
 ÷ 1160 ÷ 0020 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) ÷ [999.0] SPACE (Other) ÷ [0.3]
-÷ 1160 × 0308 ÷ 0020 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 1160 × 0308 ÷ 0020 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
 ÷ 1160 ÷ 000D ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
-÷ 1160 × 0308 ÷ 000D ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 1160 × 0308 ÷ 000D ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
 ÷ 1160 ÷ 000A ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
-÷ 1160 × 0308 ÷ 000A ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 1160 × 0308 ÷ 000A ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
 ÷ 1160 ÷ 0001 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ 1160 × 0308 ÷ 0001 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ 1160 × 0300 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
-÷ 1160 × 0308 × 0300 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend) × [9.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
+÷ 1160 × 0308 ÷ 0001 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 1160 × 034F ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 1160 × 0308 × 034F ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 1160 ÷ 1F1E6 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 1160 × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
 ÷ 1160 ÷ 0600 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
-÷ 1160 × 0308 ÷ 0600 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 1160 × 0308 ÷ 0600 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
 ÷ 1160 × 0903 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
-÷ 1160 × 0308 × 0903 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 1160 × 0308 × 0903 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
 ÷ 1160 ÷ 1100 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
-÷ 1160 × 0308 ÷ 1100 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 1160 × 0308 ÷ 1100 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
 ÷ 1160 × 1160 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [7.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
-÷ 1160 × 0308 ÷ 1160 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 1160 × 0308 ÷ 1160 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
 ÷ 1160 × 11A8 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [7.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
-÷ 1160 × 0308 ÷ 11A8 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 1160 × 0308 ÷ 11A8 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
 ÷ 1160 ÷ AC00 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
-÷ 1160 × 0308 ÷ AC00 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 1160 × 0308 ÷ AC00 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
 ÷ 1160 ÷ AC01 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ 1160 × 0308 ÷ AC01 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ 1160 ÷ 1F1E6 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ 1160 × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ 1160 ÷ 261D ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) ÷ [999.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ 1160 × 0308 ÷ 261D ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ 1160 ÷ 1F3FB ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) ÷ [999.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ 1160 × 0308 ÷ 1F3FB ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ 1160 × 200D ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ 1160 × 0308 × 200D ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ 1160 ÷ 2640 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) ÷ [999.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ 1160 × 0308 ÷ 2640 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ 1160 ÷ 1F466 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) ÷ [999.0] BOY (EBG) ÷ [0.3]
-÷ 1160 × 0308 ÷ 1F466 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] BOY (EBG) ÷ [0.3]
+÷ 1160 × 0308 ÷ AC01 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 1160 ÷ 231A ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 1160 × 0308 ÷ 231A ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 1160 × 0300 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 1160 × 0308 × 0300 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 1160 × 200D ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 1160 × 0308 × 200D ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
 ÷ 1160 ÷ 0378 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
-÷ 1160 × 0308 ÷ 0378 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 1160 × 0308 ÷ 0378 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
 ÷ 1160 ÷ D800 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
-÷ 1160 × 0308 ÷ D800 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
+÷ 1160 × 0308 ÷ D800 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
 ÷ 11A8 ÷ 0020 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) ÷ [999.0] SPACE (Other) ÷ [0.3]
-÷ 11A8 × 0308 ÷ 0020 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 11A8 × 0308 ÷ 0020 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
 ÷ 11A8 ÷ 000D ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
-÷ 11A8 × 0308 ÷ 000D ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 11A8 × 0308 ÷ 000D ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
 ÷ 11A8 ÷ 000A ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
-÷ 11A8 × 0308 ÷ 000A ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 11A8 × 0308 ÷ 000A ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
 ÷ 11A8 ÷ 0001 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ 11A8 × 0308 ÷ 0001 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ 11A8 × 0300 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
-÷ 11A8 × 0308 × 0300 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend) × [9.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
+÷ 11A8 × 0308 ÷ 0001 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 11A8 × 034F ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 11A8 × 0308 × 034F ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 11A8 ÷ 1F1E6 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 11A8 × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
 ÷ 11A8 ÷ 0600 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
-÷ 11A8 × 0308 ÷ 0600 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 11A8 × 0308 ÷ 0600 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
 ÷ 11A8 × 0903 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
-÷ 11A8 × 0308 × 0903 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 11A8 × 0308 × 0903 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
 ÷ 11A8 ÷ 1100 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
-÷ 11A8 × 0308 ÷ 1100 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 11A8 × 0308 ÷ 1100 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
 ÷ 11A8 ÷ 1160 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
-÷ 11A8 × 0308 ÷ 1160 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 11A8 × 0308 ÷ 1160 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
 ÷ 11A8 × 11A8 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [8.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
-÷ 11A8 × 0308 ÷ 11A8 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 11A8 × 0308 ÷ 11A8 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
 ÷ 11A8 ÷ AC00 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
-÷ 11A8 × 0308 ÷ AC00 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 11A8 × 0308 ÷ AC00 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
 ÷ 11A8 ÷ AC01 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ 11A8 × 0308 ÷ AC01 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ 11A8 ÷ 1F1E6 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ 11A8 × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ 11A8 ÷ 261D ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) ÷ [999.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ 11A8 × 0308 ÷ 261D ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ 11A8 ÷ 1F3FB ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) ÷ [999.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ 11A8 × 0308 ÷ 1F3FB ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ 11A8 × 200D ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ 11A8 × 0308 × 200D ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ 11A8 ÷ 2640 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) ÷ [999.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ 11A8 × 0308 ÷ 2640 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ 11A8 ÷ 1F466 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) ÷ [999.0] BOY (EBG) ÷ [0.3]
-÷ 11A8 × 0308 ÷ 1F466 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] BOY (EBG) ÷ [0.3]
+÷ 11A8 × 0308 ÷ AC01 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 11A8 ÷ 231A ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 11A8 × 0308 ÷ 231A ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 11A8 × 0300 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 11A8 × 0308 × 0300 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 11A8 × 200D ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 11A8 × 0308 × 200D ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
 ÷ 11A8 ÷ 0378 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
-÷ 11A8 × 0308 ÷ 0378 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 11A8 × 0308 ÷ 0378 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
 ÷ 11A8 ÷ D800 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
-÷ 11A8 × 0308 ÷ D800 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
+÷ 11A8 × 0308 ÷ D800 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
 ÷ AC00 ÷ 0020 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) ÷ [999.0] SPACE (Other) ÷ [0.3]
-÷ AC00 × 0308 ÷ 0020 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ AC00 × 0308 ÷ 0020 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
 ÷ AC00 ÷ 000D ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
-÷ AC00 × 0308 ÷ 000D ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ AC00 × 0308 ÷ 000D ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
 ÷ AC00 ÷ 000A ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
-÷ AC00 × 0308 ÷ 000A ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ AC00 × 0308 ÷ 000A ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
 ÷ AC00 ÷ 0001 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ AC00 × 0308 ÷ 0001 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ AC00 × 0300 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
-÷ AC00 × 0308 × 0300 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend) × [9.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
+÷ AC00 × 0308 ÷ 0001 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ AC00 × 034F ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ AC00 × 0308 × 034F ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ AC00 ÷ 1F1E6 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ AC00 × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
 ÷ AC00 ÷ 0600 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
-÷ AC00 × 0308 ÷ 0600 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ AC00 × 0308 ÷ 0600 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
 ÷ AC00 × 0903 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
-÷ AC00 × 0308 × 0903 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ AC00 × 0308 × 0903 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
 ÷ AC00 ÷ 1100 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
-÷ AC00 × 0308 ÷ 1100 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ AC00 × 0308 ÷ 1100 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
 ÷ AC00 × 1160 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [7.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
-÷ AC00 × 0308 ÷ 1160 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ AC00 × 0308 ÷ 1160 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
 ÷ AC00 × 11A8 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [7.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
-÷ AC00 × 0308 ÷ 11A8 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ AC00 × 0308 ÷ 11A8 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
 ÷ AC00 ÷ AC00 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
-÷ AC00 × 0308 ÷ AC00 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ AC00 × 0308 ÷ AC00 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
 ÷ AC00 ÷ AC01 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ AC00 × 0308 ÷ AC01 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ AC00 ÷ 1F1E6 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ AC00 × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ AC00 ÷ 261D ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) ÷ [999.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ AC00 × 0308 ÷ 261D ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ AC00 ÷ 1F3FB ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) ÷ [999.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ AC00 × 0308 ÷ 1F3FB ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ AC00 × 200D ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ AC00 × 0308 × 200D ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ AC00 ÷ 2640 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) ÷ [999.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ AC00 × 0308 ÷ 2640 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ AC00 ÷ 1F466 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) ÷ [999.0] BOY (EBG) ÷ [0.3]
-÷ AC00 × 0308 ÷ 1F466 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] BOY (EBG) ÷ [0.3]
+÷ AC00 × 0308 ÷ AC01 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ AC00 ÷ 231A ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ AC00 × 0308 ÷ 231A ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ AC00 × 0300 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ AC00 × 0308 × 0300 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ AC00 × 200D ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ AC00 × 0308 × 200D ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
 ÷ AC00 ÷ 0378 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
-÷ AC00 × 0308 ÷ 0378 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ AC00 × 0308 ÷ 0378 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
 ÷ AC00 ÷ D800 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
-÷ AC00 × 0308 ÷ D800 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
+÷ AC00 × 0308 ÷ D800 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
 ÷ AC01 ÷ 0020 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) ÷ [999.0] SPACE (Other) ÷ [0.3]
-÷ AC01 × 0308 ÷ 0020 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ AC01 × 0308 ÷ 0020 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
 ÷ AC01 ÷ 000D ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
-÷ AC01 × 0308 ÷ 000D ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ AC01 × 0308 ÷ 000D ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
 ÷ AC01 ÷ 000A ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
-÷ AC01 × 0308 ÷ 000A ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ AC01 × 0308 ÷ 000A ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
 ÷ AC01 ÷ 0001 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ AC01 × 0308 ÷ 0001 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ AC01 × 0300 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
-÷ AC01 × 0308 × 0300 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend) × [9.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
+÷ AC01 × 0308 ÷ 0001 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ AC01 × 034F ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ AC01 × 0308 × 034F ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ AC01 ÷ 1F1E6 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ AC01 × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
 ÷ AC01 ÷ 0600 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
-÷ AC01 × 0308 ÷ 0600 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ AC01 × 0308 ÷ 0600 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
 ÷ AC01 × 0903 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
-÷ AC01 × 0308 × 0903 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ AC01 × 0308 × 0903 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
 ÷ AC01 ÷ 1100 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
-÷ AC01 × 0308 ÷ 1100 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ AC01 × 0308 ÷ 1100 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
 ÷ AC01 ÷ 1160 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
-÷ AC01 × 0308 ÷ 1160 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ AC01 × 0308 ÷ 1160 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
 ÷ AC01 × 11A8 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [8.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
-÷ AC01 × 0308 ÷ 11A8 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ AC01 × 0308 ÷ 11A8 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
 ÷ AC01 ÷ AC00 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
-÷ AC01 × 0308 ÷ AC00 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ AC01 × 0308 ÷ AC00 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
 ÷ AC01 ÷ AC01 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ AC01 × 0308 ÷ AC01 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ AC01 ÷ 1F1E6 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ AC01 × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ AC01 ÷ 261D ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) ÷ [999.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ AC01 × 0308 ÷ 261D ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ AC01 ÷ 1F3FB ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) ÷ [999.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ AC01 × 0308 ÷ 1F3FB ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ AC01 × 200D ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ AC01 × 0308 × 200D ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ AC01 ÷ 2640 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) ÷ [999.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ AC01 × 0308 ÷ 2640 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ AC01 ÷ 1F466 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) ÷ [999.0] BOY (EBG) ÷ [0.3]
-÷ AC01 × 0308 ÷ 1F466 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] BOY (EBG) ÷ [0.3]
+÷ AC01 × 0308 ÷ AC01 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ AC01 ÷ 231A ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ AC01 × 0308 ÷ 231A ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ AC01 × 0300 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ AC01 × 0308 × 0300 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ AC01 × 200D ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ AC01 × 0308 × 200D ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
 ÷ AC01 ÷ 0378 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
-÷ AC01 × 0308 ÷ 0378 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ AC01 × 0308 ÷ 0378 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
 ÷ AC01 ÷ D800 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
-÷ AC01 × 0308 ÷ D800 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
-÷ 1F1E6 ÷ 0020 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [999.0] SPACE (Other) ÷ [0.3]
-÷ 1F1E6 × 0308 ÷ 0020 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] SPACE (Other) ÷ [0.3]
-÷ 1F1E6 ÷ 000D ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
-÷ 1F1E6 × 0308 ÷ 000D ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
-÷ 1F1E6 ÷ 000A ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
-÷ 1F1E6 × 0308 ÷ 000A ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
-÷ 1F1E6 ÷ 0001 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ 1F1E6 × 0308 ÷ 0001 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ 1F1E6 × 0300 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
-÷ 1F1E6 × 0308 × 0300 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend) × [9.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
-÷ 1F1E6 ÷ 0600 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
-÷ 1F1E6 × 0308 ÷ 0600 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
-÷ 1F1E6 × 0903 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
-÷ 1F1E6 × 0308 × 0903 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
-÷ 1F1E6 ÷ 1100 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
-÷ 1F1E6 × 0308 ÷ 1100 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
-÷ 1F1E6 ÷ 1160 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
-÷ 1F1E6 × 0308 ÷ 1160 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
-÷ 1F1E6 ÷ 11A8 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
-÷ 1F1E6 × 0308 ÷ 11A8 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
-÷ 1F1E6 ÷ AC00 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
-÷ 1F1E6 × 0308 ÷ AC00 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
-÷ 1F1E6 ÷ AC01 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ 1F1E6 × 0308 ÷ AC01 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ 1F1E6 × 1F1E6 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [12.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ 1F1E6 × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ 1F1E6 ÷ 261D ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [999.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ 1F1E6 × 0308 ÷ 261D ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ 1F1E6 ÷ 1F3FB ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [999.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ 1F1E6 × 0308 ÷ 1F3FB ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ 1F1E6 × 200D ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ 1F1E6 × 0308 × 200D ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ 1F1E6 ÷ 2640 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [999.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ 1F1E6 × 0308 ÷ 2640 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ 1F1E6 ÷ 1F466 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [999.0] BOY (EBG) ÷ [0.3]
-÷ 1F1E6 × 0308 ÷ 1F466 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] BOY (EBG) ÷ [0.3]
-÷ 1F1E6 ÷ 0378 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
-÷ 1F1E6 × 0308 ÷ 0378 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
-÷ 1F1E6 ÷ D800 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
-÷ 1F1E6 × 0308 ÷ D800 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
-÷ 261D ÷ 0020 ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) ÷ [999.0] SPACE (Other) ÷ [0.3]
-÷ 261D × 0308 ÷ 0020 ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] SPACE (Other) ÷ [0.3]
-÷ 261D ÷ 000D ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
-÷ 261D × 0308 ÷ 000D ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
-÷ 261D ÷ 000A ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
-÷ 261D × 0308 ÷ 000A ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
-÷ 261D ÷ 0001 ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ 261D × 0308 ÷ 0001 ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ 261D × 0300 ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) × [9.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
-÷ 261D × 0308 × 0300 ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) × [9.0] COMBINING DIAERESIS (Extend) × [9.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
-÷ 261D ÷ 0600 ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
-÷ 261D × 0308 ÷ 0600 ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
-÷ 261D × 0903 ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
-÷ 261D × 0308 × 0903 ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) × [9.0] COMBINING DIAERESIS (Extend) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
-÷ 261D ÷ 1100 ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
-÷ 261D × 0308 ÷ 1100 ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
-÷ 261D ÷ 1160 ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
-÷ 261D × 0308 ÷ 1160 ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
-÷ 261D ÷ 11A8 ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
-÷ 261D × 0308 ÷ 11A8 ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
-÷ 261D ÷ AC00 ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
-÷ 261D × 0308 ÷ AC00 ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
-÷ 261D ÷ AC01 ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ 261D × 0308 ÷ AC01 ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ 261D ÷ 1F1E6 ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ 261D × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ 261D ÷ 261D ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) ÷ [999.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ 261D × 0308 ÷ 261D ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ 261D × 1F3FB ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) × [10.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ 261D × 0308 × 1F3FB ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) × [9.0] COMBINING DIAERESIS (Extend) × [10.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ 261D × 200D ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ 261D × 0308 × 200D ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) × [9.0] COMBINING DIAERESIS (Extend) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ 261D ÷ 2640 ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) ÷ [999.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ 261D × 0308 ÷ 2640 ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ 261D ÷ 1F466 ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) ÷ [999.0] BOY (EBG) ÷ [0.3]
-÷ 261D × 0308 ÷ 1F466 ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] BOY (EBG) ÷ [0.3]
-÷ 261D ÷ 0378 ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
-÷ 261D × 0308 ÷ 0378 ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
-÷ 261D ÷ D800 ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
-÷ 261D × 0308 ÷ D800 ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
-÷ 1F3FB ÷ 0020 ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [999.0] SPACE (Other) ÷ [0.3]
-÷ 1F3FB × 0308 ÷ 0020 ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] SPACE (Other) ÷ [0.3]
-÷ 1F3FB ÷ 000D ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
-÷ 1F3FB × 0308 ÷ 000D ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
-÷ 1F3FB ÷ 000A ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
-÷ 1F3FB × 0308 ÷ 000A ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
-÷ 1F3FB ÷ 0001 ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ 1F3FB × 0308 ÷ 0001 ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ 1F3FB × 0300 ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) × [9.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
-÷ 1F3FB × 0308 × 0300 ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) × [9.0] COMBINING DIAERESIS (Extend) × [9.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
-÷ 1F3FB ÷ 0600 ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
-÷ 1F3FB × 0308 ÷ 0600 ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
-÷ 1F3FB × 0903 ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
-÷ 1F3FB × 0308 × 0903 ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) × [9.0] COMBINING DIAERESIS (Extend) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
-÷ 1F3FB ÷ 1100 ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
-÷ 1F3FB × 0308 ÷ 1100 ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
-÷ 1F3FB ÷ 1160 ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
-÷ 1F3FB × 0308 ÷ 1160 ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
-÷ 1F3FB ÷ 11A8 ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
-÷ 1F3FB × 0308 ÷ 11A8 ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
-÷ 1F3FB ÷ AC00 ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
-÷ 1F3FB × 0308 ÷ AC00 ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
-÷ 1F3FB ÷ AC01 ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ 1F3FB × 0308 ÷ AC01 ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ 1F3FB ÷ 1F1E6 ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ 1F3FB × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ 1F3FB ÷ 261D ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [999.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ 1F3FB × 0308 ÷ 261D ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ 1F3FB ÷ 1F3FB ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [999.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ 1F3FB × 0308 ÷ 1F3FB ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ 1F3FB × 200D ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ 1F3FB × 0308 × 200D ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) × [9.0] COMBINING DIAERESIS (Extend) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ 1F3FB ÷ 2640 ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [999.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ 1F3FB × 0308 ÷ 2640 ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ 1F3FB ÷ 1F466 ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [999.0] BOY (EBG) ÷ [0.3]
-÷ 1F3FB × 0308 ÷ 1F466 ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] BOY (EBG) ÷ [0.3]
-÷ 1F3FB ÷ 0378 ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
-÷ 1F3FB × 0308 ÷ 0378 ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
-÷ 1F3FB ÷ D800 ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
-÷ 1F3FB × 0308 ÷ D800 ÷	#  ÷ [0.2] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
-÷ 200D ÷ 0020 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) ÷ [999.0] SPACE (Other) ÷ [0.3]
-÷ 200D × 0308 ÷ 0020 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] SPACE (Other) ÷ [0.3]
-÷ 200D ÷ 000D ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
-÷ 200D × 0308 ÷ 000D ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
-÷ 200D ÷ 000A ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
-÷ 200D × 0308 ÷ 000A ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
-÷ 200D ÷ 0001 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ 200D × 0308 ÷ 0001 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ 200D × 0300 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) × [9.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
-÷ 200D × 0308 × 0300 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) × [9.0] COMBINING DIAERESIS (Extend) × [9.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
-÷ 200D ÷ 0600 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
-÷ 200D × 0308 ÷ 0600 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
-÷ 200D × 0903 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
-÷ 200D × 0308 × 0903 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) × [9.0] COMBINING DIAERESIS (Extend) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
-÷ 200D ÷ 1100 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
-÷ 200D × 0308 ÷ 1100 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
-÷ 200D ÷ 1160 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
-÷ 200D × 0308 ÷ 1160 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
-÷ 200D ÷ 11A8 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
-÷ 200D × 0308 ÷ 11A8 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
-÷ 200D ÷ AC00 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
-÷ 200D × 0308 ÷ AC00 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
-÷ 200D ÷ AC01 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ 200D × 0308 ÷ AC01 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ 200D ÷ 1F1E6 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ 200D × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ 200D ÷ 261D ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) ÷ [999.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ 200D × 0308 ÷ 261D ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ 200D ÷ 1F3FB ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) ÷ [999.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ 200D × 0308 ÷ 1F3FB ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ 200D × 200D ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ 200D × 0308 × 200D ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) × [9.0] COMBINING DIAERESIS (Extend) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ 200D × 2640 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) × [11.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ 200D × 0308 ÷ 2640 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ 200D × 1F466 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) × [11.0] BOY (EBG) ÷ [0.3]
-÷ 200D × 0308 ÷ 1F466 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] BOY (EBG) ÷ [0.3]
-÷ 200D ÷ 0378 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
-÷ 200D × 0308 ÷ 0378 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
-÷ 200D ÷ D800 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
-÷ 200D × 0308 ÷ D800 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
-÷ 2640 ÷ 0020 ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
-÷ 2640 × 0308 ÷ 0020 ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] SPACE (Other) ÷ [0.3]
-÷ 2640 ÷ 000D ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
-÷ 2640 × 0308 ÷ 000D ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
-÷ 2640 ÷ 000A ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
-÷ 2640 × 0308 ÷ 000A ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
-÷ 2640 ÷ 0001 ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ 2640 × 0308 ÷ 0001 ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ 2640 × 0300 ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) × [9.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
-÷ 2640 × 0308 × 0300 ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) × [9.0] COMBINING DIAERESIS (Extend) × [9.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
-÷ 2640 ÷ 0600 ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
-÷ 2640 × 0308 ÷ 0600 ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
-÷ 2640 × 0903 ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
-÷ 2640 × 0308 × 0903 ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) × [9.0] COMBINING DIAERESIS (Extend) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
-÷ 2640 ÷ 1100 ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
-÷ 2640 × 0308 ÷ 1100 ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
-÷ 2640 ÷ 1160 ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
-÷ 2640 × 0308 ÷ 1160 ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
-÷ 2640 ÷ 11A8 ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
-÷ 2640 × 0308 ÷ 11A8 ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
-÷ 2640 ÷ AC00 ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
-÷ 2640 × 0308 ÷ AC00 ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
-÷ 2640 ÷ AC01 ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ 2640 × 0308 ÷ AC01 ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ 2640 ÷ 1F1E6 ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ 2640 × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ 2640 ÷ 261D ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) ÷ [999.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ 2640 × 0308 ÷ 261D ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ 2640 ÷ 1F3FB ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) ÷ [999.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ 2640 × 0308 ÷ 1F3FB ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ 2640 × 200D ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ 2640 × 0308 × 200D ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) × [9.0] COMBINING DIAERESIS (Extend) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ 2640 ÷ 2640 ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) ÷ [999.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ 2640 × 0308 ÷ 2640 ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ 2640 ÷ 1F466 ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) ÷ [999.0] BOY (EBG) ÷ [0.3]
-÷ 2640 × 0308 ÷ 1F466 ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] BOY (EBG) ÷ [0.3]
-÷ 2640 ÷ 0378 ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
-÷ 2640 × 0308 ÷ 0378 ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
-÷ 2640 ÷ D800 ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
-÷ 2640 × 0308 ÷ D800 ÷	#  ÷ [0.2] FEMALE SIGN (Glue_After_Zwj) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
-÷ 1F466 ÷ 0020 ÷	#  ÷ [0.2] BOY (EBG) ÷ [999.0] SPACE (Other) ÷ [0.3]
-÷ 1F466 × 0308 ÷ 0020 ÷	#  ÷ [0.2] BOY (EBG) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] SPACE (Other) ÷ [0.3]
-÷ 1F466 ÷ 000D ÷	#  ÷ [0.2] BOY (EBG) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
-÷ 1F466 × 0308 ÷ 000D ÷	#  ÷ [0.2] BOY (EBG) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
-÷ 1F466 ÷ 000A ÷	#  ÷ [0.2] BOY (EBG) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
-÷ 1F466 × 0308 ÷ 000A ÷	#  ÷ [0.2] BOY (EBG) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
-÷ 1F466 ÷ 0001 ÷	#  ÷ [0.2] BOY (EBG) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ 1F466 × 0308 ÷ 0001 ÷	#  ÷ [0.2] BOY (EBG) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ 1F466 × 0300 ÷	#  ÷ [0.2] BOY (EBG) × [9.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
-÷ 1F466 × 0308 × 0300 ÷	#  ÷ [0.2] BOY (EBG) × [9.0] COMBINING DIAERESIS (Extend) × [9.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
-÷ 1F466 ÷ 0600 ÷	#  ÷ [0.2] BOY (EBG) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
-÷ 1F466 × 0308 ÷ 0600 ÷	#  ÷ [0.2] BOY (EBG) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
-÷ 1F466 × 0903 ÷	#  ÷ [0.2] BOY (EBG) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
-÷ 1F466 × 0308 × 0903 ÷	#  ÷ [0.2] BOY (EBG) × [9.0] COMBINING DIAERESIS (Extend) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
-÷ 1F466 ÷ 1100 ÷	#  ÷ [0.2] BOY (EBG) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
-÷ 1F466 × 0308 ÷ 1100 ÷	#  ÷ [0.2] BOY (EBG) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
-÷ 1F466 ÷ 1160 ÷	#  ÷ [0.2] BOY (EBG) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
-÷ 1F466 × 0308 ÷ 1160 ÷	#  ÷ [0.2] BOY (EBG) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
-÷ 1F466 ÷ 11A8 ÷	#  ÷ [0.2] BOY (EBG) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
-÷ 1F466 × 0308 ÷ 11A8 ÷	#  ÷ [0.2] BOY (EBG) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
-÷ 1F466 ÷ AC00 ÷	#  ÷ [0.2] BOY (EBG) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
-÷ 1F466 × 0308 ÷ AC00 ÷	#  ÷ [0.2] BOY (EBG) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
-÷ 1F466 ÷ AC01 ÷	#  ÷ [0.2] BOY (EBG) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ 1F466 × 0308 ÷ AC01 ÷	#  ÷ [0.2] BOY (EBG) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ 1F466 ÷ 1F1E6 ÷	#  ÷ [0.2] BOY (EBG) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ 1F466 × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] BOY (EBG) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ 1F466 ÷ 261D ÷	#  ÷ [0.2] BOY (EBG) ÷ [999.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ 1F466 × 0308 ÷ 261D ÷	#  ÷ [0.2] BOY (EBG) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ 1F466 × 1F3FB ÷	#  ÷ [0.2] BOY (EBG) × [10.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ 1F466 × 0308 × 1F3FB ÷	#  ÷ [0.2] BOY (EBG) × [9.0] COMBINING DIAERESIS (Extend) × [10.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ 1F466 × 200D ÷	#  ÷ [0.2] BOY (EBG) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ 1F466 × 0308 × 200D ÷	#  ÷ [0.2] BOY (EBG) × [9.0] COMBINING DIAERESIS (Extend) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ 1F466 ÷ 2640 ÷	#  ÷ [0.2] BOY (EBG) ÷ [999.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ 1F466 × 0308 ÷ 2640 ÷	#  ÷ [0.2] BOY (EBG) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ 1F466 ÷ 1F466 ÷	#  ÷ [0.2] BOY (EBG) ÷ [999.0] BOY (EBG) ÷ [0.3]
-÷ 1F466 × 0308 ÷ 1F466 ÷	#  ÷ [0.2] BOY (EBG) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] BOY (EBG) ÷ [0.3]
-÷ 1F466 ÷ 0378 ÷	#  ÷ [0.2] BOY (EBG) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
-÷ 1F466 × 0308 ÷ 0378 ÷	#  ÷ [0.2] BOY (EBG) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
-÷ 1F466 ÷ D800 ÷	#  ÷ [0.2] BOY (EBG) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
-÷ 1F466 × 0308 ÷ D800 ÷	#  ÷ [0.2] BOY (EBG) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
+÷ AC01 × 0308 ÷ D800 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
+÷ 231A ÷ 0020 ÷	#  ÷ [0.2] WATCH (ExtPict) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 231A × 0308 ÷ 0020 ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 231A ÷ 000D ÷	#  ÷ [0.2] WATCH (ExtPict) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 231A × 0308 ÷ 000D ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 231A ÷ 000A ÷	#  ÷ [0.2] WATCH (ExtPict) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 231A × 0308 ÷ 000A ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 231A ÷ 0001 ÷	#  ÷ [0.2] WATCH (ExtPict) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 231A × 0308 ÷ 0001 ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 231A × 034F ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 231A × 0308 × 034F ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 231A ÷ 1F1E6 ÷	#  ÷ [0.2] WATCH (ExtPict) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 231A × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 231A ÷ 0600 ÷	#  ÷ [0.2] WATCH (ExtPict) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 231A × 0308 ÷ 0600 ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 231A × 0903 ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 231A × 0308 × 0903 ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 231A ÷ 1100 ÷	#  ÷ [0.2] WATCH (ExtPict) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 231A × 0308 ÷ 1100 ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 231A ÷ 1160 ÷	#  ÷ [0.2] WATCH (ExtPict) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 231A × 0308 ÷ 1160 ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 231A ÷ 11A8 ÷	#  ÷ [0.2] WATCH (ExtPict) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 231A × 0308 ÷ 11A8 ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 231A ÷ AC00 ÷	#  ÷ [0.2] WATCH (ExtPict) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 231A × 0308 ÷ AC00 ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 231A ÷ AC01 ÷	#  ÷ [0.2] WATCH (ExtPict) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 231A × 0308 ÷ AC01 ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 231A ÷ 231A ÷	#  ÷ [0.2] WATCH (ExtPict) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 231A × 0308 ÷ 231A ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 231A × 0300 ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 231A × 0308 × 0300 ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 231A × 200D ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 231A × 0308 × 200D ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 231A ÷ 0378 ÷	#  ÷ [0.2] WATCH (ExtPict) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 231A × 0308 ÷ 0378 ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 231A ÷ D800 ÷	#  ÷ [0.2] WATCH (ExtPict) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
+÷ 231A × 0308 ÷ D800 ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
+÷ 0300 ÷ 0020 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 0300 × 0308 ÷ 0020 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 0300 ÷ 000D ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 0300 × 0308 ÷ 000D ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 0300 ÷ 000A ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 0300 × 0308 ÷ 000A ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 0300 ÷ 0001 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 0300 × 0308 ÷ 0001 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 0300 × 034F ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 0300 × 0308 × 034F ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 0300 ÷ 1F1E6 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 0300 × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 0300 ÷ 0600 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 0300 × 0308 ÷ 0600 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 0300 × 0903 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 0300 × 0308 × 0903 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 0300 ÷ 1100 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 0300 × 0308 ÷ 1100 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 0300 ÷ 1160 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 0300 × 0308 ÷ 1160 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 0300 ÷ 11A8 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 0300 × 0308 ÷ 11A8 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 0300 ÷ AC00 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 0300 × 0308 ÷ AC00 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 0300 ÷ AC01 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 0300 × 0308 ÷ AC01 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 0300 ÷ 231A ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 0300 × 0308 ÷ 231A ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 0300 × 0300 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 0300 × 0308 × 0300 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 0300 × 200D ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 0300 × 0308 × 200D ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 0300 ÷ 0378 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 0300 × 0308 ÷ 0378 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 0300 ÷ D800 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
+÷ 0300 × 0308 ÷ D800 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
+÷ 200D ÷ 0020 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 200D × 0308 ÷ 0020 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 200D ÷ 000D ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 200D × 0308 ÷ 000D ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 200D ÷ 000A ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 200D × 0308 ÷ 000A ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 200D ÷ 0001 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 200D × 0308 ÷ 0001 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 200D × 034F ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 200D × 0308 × 034F ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 200D ÷ 1F1E6 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 200D × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 200D ÷ 0600 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 200D × 0308 ÷ 0600 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 200D × 0903 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 200D × 0308 × 0903 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 200D ÷ 1100 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 200D × 0308 ÷ 1100 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 200D ÷ 1160 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 200D × 0308 ÷ 1160 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 200D ÷ 11A8 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 200D × 0308 ÷ 11A8 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 200D ÷ AC00 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 200D × 0308 ÷ AC00 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 200D ÷ AC01 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 200D × 0308 ÷ AC01 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 200D ÷ 231A ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 200D × 0308 ÷ 231A ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 200D × 0300 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 200D × 0308 × 0300 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 200D × 200D ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 200D × 0308 × 200D ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 200D ÷ 0378 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 200D × 0308 ÷ 0378 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 200D ÷ D800 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
+÷ 200D × 0308 ÷ D800 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
 ÷ 0378 ÷ 0020 ÷	#  ÷ [0.2] <reserved-0378> (Other) ÷ [999.0] SPACE (Other) ÷ [0.3]
-÷ 0378 × 0308 ÷ 0020 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 0378 × 0308 ÷ 0020 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
 ÷ 0378 ÷ 000D ÷	#  ÷ [0.2] <reserved-0378> (Other) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
-÷ 0378 × 0308 ÷ 000D ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 0378 × 0308 ÷ 000D ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
 ÷ 0378 ÷ 000A ÷	#  ÷ [0.2] <reserved-0378> (Other) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
-÷ 0378 × 0308 ÷ 000A ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 0378 × 0308 ÷ 000A ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
 ÷ 0378 ÷ 0001 ÷	#  ÷ [0.2] <reserved-0378> (Other) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ 0378 × 0308 ÷ 0001 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ 0378 × 0300 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
-÷ 0378 × 0308 × 0300 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend) × [9.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
+÷ 0378 × 0308 ÷ 0001 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 0378 × 034F ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 0378 × 0308 × 034F ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 0378 ÷ 1F1E6 ÷	#  ÷ [0.2] <reserved-0378> (Other) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 0378 × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
 ÷ 0378 ÷ 0600 ÷	#  ÷ [0.2] <reserved-0378> (Other) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
-÷ 0378 × 0308 ÷ 0600 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 0378 × 0308 ÷ 0600 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
 ÷ 0378 × 0903 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
-÷ 0378 × 0308 × 0903 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 0378 × 0308 × 0903 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
 ÷ 0378 ÷ 1100 ÷	#  ÷ [0.2] <reserved-0378> (Other) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
-÷ 0378 × 0308 ÷ 1100 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 0378 × 0308 ÷ 1100 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
 ÷ 0378 ÷ 1160 ÷	#  ÷ [0.2] <reserved-0378> (Other) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
-÷ 0378 × 0308 ÷ 1160 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 0378 × 0308 ÷ 1160 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
 ÷ 0378 ÷ 11A8 ÷	#  ÷ [0.2] <reserved-0378> (Other) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
-÷ 0378 × 0308 ÷ 11A8 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 0378 × 0308 ÷ 11A8 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
 ÷ 0378 ÷ AC00 ÷	#  ÷ [0.2] <reserved-0378> (Other) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
-÷ 0378 × 0308 ÷ AC00 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 0378 × 0308 ÷ AC00 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
 ÷ 0378 ÷ AC01 ÷	#  ÷ [0.2] <reserved-0378> (Other) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ 0378 × 0308 ÷ AC01 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ 0378 ÷ 1F1E6 ÷	#  ÷ [0.2] <reserved-0378> (Other) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ 0378 × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ 0378 ÷ 261D ÷	#  ÷ [0.2] <reserved-0378> (Other) ÷ [999.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ 0378 × 0308 ÷ 261D ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ 0378 ÷ 1F3FB ÷	#  ÷ [0.2] <reserved-0378> (Other) ÷ [999.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ 0378 × 0308 ÷ 1F3FB ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ 0378 × 200D ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ 0378 × 0308 × 200D ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ 0378 ÷ 2640 ÷	#  ÷ [0.2] <reserved-0378> (Other) ÷ [999.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ 0378 × 0308 ÷ 2640 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ 0378 ÷ 1F466 ÷	#  ÷ [0.2] <reserved-0378> (Other) ÷ [999.0] BOY (EBG) ÷ [0.3]
-÷ 0378 × 0308 ÷ 1F466 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] BOY (EBG) ÷ [0.3]
+÷ 0378 × 0308 ÷ AC01 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 0378 ÷ 231A ÷	#  ÷ [0.2] <reserved-0378> (Other) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 0378 × 0308 ÷ 231A ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 0378 × 0300 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 0378 × 0308 × 0300 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 0378 × 200D ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 0378 × 0308 × 200D ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
 ÷ 0378 ÷ 0378 ÷	#  ÷ [0.2] <reserved-0378> (Other) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
-÷ 0378 × 0308 ÷ 0378 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 0378 × 0308 ÷ 0378 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
 ÷ 0378 ÷ D800 ÷	#  ÷ [0.2] <reserved-0378> (Other) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
-÷ 0378 × 0308 ÷ D800 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
+÷ 0378 × 0308 ÷ D800 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
 ÷ D800 ÷ 0020 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] SPACE (Other) ÷ [0.3]
-÷ D800 ÷ 0308 ÷ 0020 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ D800 ÷ 0308 ÷ 0020 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
 ÷ D800 ÷ 000D ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
-÷ D800 ÷ 0308 ÷ 000D ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ D800 ÷ 0308 ÷ 000D ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
 ÷ D800 ÷ 000A ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] <LINE FEED (LF)> (LF) ÷ [0.3]
-÷ D800 ÷ 0308 ÷ 000A ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ D800 ÷ 0308 ÷ 000A ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
 ÷ D800 ÷ 0001 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ D800 ÷ 0308 ÷ 0001 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
-÷ D800 ÷ 0300 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
-÷ D800 ÷ 0308 × 0300 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) × [9.0] COMBINING GRAVE ACCENT (Extend) ÷ [0.3]
+÷ D800 ÷ 0308 ÷ 0001 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ D800 ÷ 034F ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ D800 ÷ 0308 × 034F ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ D800 ÷ 1F1E6 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ D800 ÷ 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
 ÷ D800 ÷ 0600 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
-÷ D800 ÷ 0308 ÷ 0600 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ D800 ÷ 0308 ÷ 0600 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
 ÷ D800 ÷ 0903 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
-÷ D800 ÷ 0308 × 0903 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ D800 ÷ 0308 × 0903 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
 ÷ D800 ÷ 1100 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
-÷ D800 ÷ 0308 ÷ 1100 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ D800 ÷ 0308 ÷ 1100 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
 ÷ D800 ÷ 1160 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
-÷ D800 ÷ 0308 ÷ 1160 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ D800 ÷ 0308 ÷ 1160 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
 ÷ D800 ÷ 11A8 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
-÷ D800 ÷ 0308 ÷ 11A8 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ D800 ÷ 0308 ÷ 11A8 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
 ÷ D800 ÷ AC00 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
-÷ D800 ÷ 0308 ÷ AC00 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ D800 ÷ 0308 ÷ AC00 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
 ÷ D800 ÷ AC01 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ D800 ÷ 0308 ÷ AC01 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
-÷ D800 ÷ 1F1E6 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ D800 ÷ 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-÷ D800 ÷ 261D ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ D800 ÷ 0308 ÷ 261D ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ D800 ÷ 1F3FB ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ D800 ÷ 0308 ÷ 1F3FB ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ D800 ÷ 200D ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ D800 ÷ 0308 × 200D ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ D800 ÷ 2640 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ D800 ÷ 0308 ÷ 2640 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ D800 ÷ 1F466 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] BOY (EBG) ÷ [0.3]
-÷ D800 ÷ 0308 ÷ 1F466 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] BOY (EBG) ÷ [0.3]
+÷ D800 ÷ 0308 ÷ AC01 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ D800 ÷ 231A ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] WATCH (ExtPict) ÷ [0.3]
+÷ D800 ÷ 0308 ÷ 231A ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ D800 ÷ 0300 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ D800 ÷ 0308 × 0300 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ D800 ÷ 200D ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ D800 ÷ 0308 × 200D ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
 ÷ D800 ÷ 0378 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] <reserved-0378> (Other) ÷ [0.3]
-÷ D800 ÷ 0308 ÷ 0378 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ D800 ÷ 0308 ÷ 0378 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
 ÷ D800 ÷ D800 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] <surrogate-D800> (Control) ÷ [0.3]
-÷ D800 ÷ 0308 ÷ D800 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
-÷ 000D × 000A ÷ 0061 ÷ 000A ÷ 0308 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) × [3.0] <LINE FEED (LF)> (LF) ÷ [4.0] LATIN SMALL LETTER A (Other) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend) ÷ [0.3]
-÷ 0061 × 0308 ÷	#  ÷ [0.2] LATIN SMALL LETTER A (Other) × [9.0] COMBINING DIAERESIS (Extend) ÷ [0.3]
-÷ 0020 × 200D ÷ 0646 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [999.0] ARABIC LETTER NOON (Other) ÷ [0.3]
-÷ 0646 × 200D ÷ 0020 ÷	#  ÷ [0.2] ARABIC LETTER NOON (Other) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ D800 ÷ 0308 ÷ D800 ÷	#  ÷ [0.2] <surrogate-D800> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <surrogate-D800> (Control) ÷ [0.3]
+÷ 000D × 000A ÷ 0061 ÷ 000A ÷ 0308 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) × [3.0] <LINE FEED (LF)> (LF) ÷ [4.0] LATIN SMALL LETTER A (Other) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [0.3]
+÷ 0061 × 0308 ÷	#  ÷ [0.2] LATIN SMALL LETTER A (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [0.3]
+÷ 0020 × 200D ÷ 0646 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [999.0] ARABIC LETTER NOON (Other) ÷ [0.3]
+÷ 0646 × 200D ÷ 0020 ÷	#  ÷ [0.2] ARABIC LETTER NOON (Other) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
 ÷ 1100 × 1100 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [6.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
 ÷ AC00 × 11A8 ÷ 1100 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [7.0] HANGUL JONGSEONG KIYEOK (T) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
 ÷ AC01 × 11A8 ÷ 1100 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [8.0] HANGUL JONGSEONG KIYEOK (T) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
 ÷ 1F1E6 × 1F1E7 ÷ 1F1E8 ÷ 0062 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [12.0] REGIONAL INDICATOR SYMBOL LETTER B (RI) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER C (RI) ÷ [999.0] LATIN SMALL LETTER B (Other) ÷ [0.3]
 ÷ 0061 ÷ 1F1E6 × 1F1E7 ÷ 1F1E8 ÷ 0062 ÷	#  ÷ [0.2] LATIN SMALL LETTER A (Other) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [13.0] REGIONAL INDICATOR SYMBOL LETTER B (RI) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER C (RI) ÷ [999.0] LATIN SMALL LETTER B (Other) ÷ [0.3]
-÷ 0061 ÷ 1F1E6 × 1F1E7 × 200D ÷ 1F1E8 ÷ 0062 ÷	#  ÷ [0.2] LATIN SMALL LETTER A (Other) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [13.0] REGIONAL INDICATOR SYMBOL LETTER B (RI) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER C (RI) ÷ [999.0] LATIN SMALL LETTER B (Other) ÷ [0.3]
-÷ 0061 ÷ 1F1E6 × 200D ÷ 1F1E7 × 1F1E8 ÷ 0062 ÷	#  ÷ [0.2] LATIN SMALL LETTER A (Other) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER B (RI) × [13.0] REGIONAL INDICATOR SYMBOL LETTER C (RI) ÷ [999.0] LATIN SMALL LETTER B (Other) ÷ [0.3]
+÷ 0061 ÷ 1F1E6 × 1F1E7 × 200D ÷ 1F1E8 ÷ 0062 ÷	#  ÷ [0.2] LATIN SMALL LETTER A (Other) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [13.0] REGIONAL INDICATOR SYMBOL LETTER B (RI) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER C (RI) ÷ [999.0] LATIN SMALL LETTER B (Other) ÷ [0.3]
+÷ 0061 ÷ 1F1E6 × 200D ÷ 1F1E7 × 1F1E8 ÷ 0062 ÷	#  ÷ [0.2] LATIN SMALL LETTER A (Other) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER B (RI) × [13.0] REGIONAL INDICATOR SYMBOL LETTER C (RI) ÷ [999.0] LATIN SMALL LETTER B (Other) ÷ [0.3]
 ÷ 0061 ÷ 1F1E6 × 1F1E7 ÷ 1F1E8 × 1F1E9 ÷ 0062 ÷	#  ÷ [0.2] LATIN SMALL LETTER A (Other) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [13.0] REGIONAL INDICATOR SYMBOL LETTER B (RI) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER C (RI) × [13.0] REGIONAL INDICATOR SYMBOL LETTER D (RI) ÷ [999.0] LATIN SMALL LETTER B (Other) ÷ [0.3]
-÷ 0061 × 200D ÷	#  ÷ [0.2] LATIN SMALL LETTER A (Other) × [9.0] ZERO WIDTH JOINER (ZWJ) ÷ [0.3]
-÷ 0061 × 0308 ÷ 0062 ÷	#  ÷ [0.2] LATIN SMALL LETTER A (Other) × [9.0] COMBINING DIAERESIS (Extend) ÷ [999.0] LATIN SMALL LETTER B (Other) ÷ [0.3]
+÷ 0061 × 200D ÷	#  ÷ [0.2] LATIN SMALL LETTER A (Other) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 0061 × 0308 ÷ 0062 ÷	#  ÷ [0.2] LATIN SMALL LETTER A (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] LATIN SMALL LETTER B (Other) ÷ [0.3]
 ÷ 0061 × 0903 ÷ 0062 ÷	#  ÷ [0.2] LATIN SMALL LETTER A (Other) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [999.0] LATIN SMALL LETTER B (Other) ÷ [0.3]
 ÷ 0061 ÷ 0600 × 0062 ÷	#  ÷ [0.2] LATIN SMALL LETTER A (Other) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) × [9.2] LATIN SMALL LETTER B (Other) ÷ [0.3]
-÷ 261D × 1F3FB ÷ 261D ÷	#  ÷ [0.2] WHITE UP POINTING INDEX (E_Base) × [10.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [999.0] WHITE UP POINTING INDEX (E_Base) ÷ [0.3]
-÷ 1F466 × 1F3FB ÷	#  ÷ [0.2] BOY (EBG) × [10.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ 200D × 1F466 × 1F3FB ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) × [11.0] BOY (EBG) × [10.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (E_Modifier) ÷ [0.3]
-÷ 200D × 2640 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) × [11.0] FEMALE SIGN (Glue_After_Zwj) ÷ [0.3]
-÷ 200D × 1F466 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ) × [11.0] BOY (EBG) ÷ [0.3]
-÷ 1F466 ÷ 1F466 ÷	#  ÷ [0.2] BOY (EBG) ÷ [999.0] BOY (EBG) ÷ [0.3]
+÷ 1F476 × 1F3FF ÷ 1F476 ÷	#  ÷ [0.2] BABY (ExtPict) × [9.0] EMOJI MODIFIER FITZPATRICK TYPE-6 (Extend) ÷ [999.0] BABY (ExtPict) ÷ [0.3]
+÷ 0061 × 1F3FF ÷ 1F476 ÷	#  ÷ [0.2] LATIN SMALL LETTER A (Other) × [9.0] EMOJI MODIFIER FITZPATRICK TYPE-6 (Extend) ÷ [999.0] BABY (ExtPict) ÷ [0.3]
+÷ 0061 × 1F3FF ÷ 1F476 × 200D × 1F6D1 ÷	#  ÷ [0.2] LATIN SMALL LETTER A (Other) × [9.0] EMOJI MODIFIER FITZPATRICK TYPE-6 (Extend) ÷ [999.0] BABY (ExtPict) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [11.0] OCTAGONAL SIGN (ExtPict) ÷ [0.3]
+÷ 1F476 × 1F3FF × 0308 × 200D × 1F476 × 1F3FF ÷	#  ÷ [0.2] BABY (ExtPict) × [9.0] EMOJI MODIFIER FITZPATRICK TYPE-6 (Extend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [11.0] BABY (ExtPict) × [9.0] EMOJI MODIFIER FITZPATRICK TYPE-6 (Extend) ÷ [0.3]
+÷ 1F6D1 × 200D × 1F6D1 ÷	#  ÷ [0.2] OCTAGONAL SIGN (ExtPict) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [11.0] OCTAGONAL SIGN (ExtPict) ÷ [0.3]
+÷ 0061 × 200D ÷ 1F6D1 ÷	#  ÷ [0.2] LATIN SMALL LETTER A (Other) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [999.0] OCTAGONAL SIGN (ExtPict) ÷ [0.3]
+÷ 2701 × 200D × 2701 ÷	#  ÷ [0.2] UPPER BLADE SCISSORS (Other) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [11.0] UPPER BLADE SCISSORS (Other) ÷ [0.3]
+÷ 0061 × 200D ÷ 2701 ÷	#  ÷ [0.2] LATIN SMALL LETTER A (Other) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [999.0] UPPER BLADE SCISSORS (Other) ÷ [0.3]
 #
-# Lines: 822
+# Lines: 672
 #
 # EOF
diff --git a/lib/stdlib/test/unicode_util_SUITE_data/LineBreakTest.txt b/lib/stdlib/test/unicode_util_SUITE_data/LineBreakTest.txt
index 6715446aba..0e9e678a85 100644
--- a/lib/stdlib/test/unicode_util_SUITE_data/LineBreakTest.txt
+++ b/lib/stdlib/test/unicode_util_SUITE_data/LineBreakTest.txt
@@ -1,6 +1,6 @@
-# LineBreakTest-10.0.0.txt
-# Date: 2017-04-14, 05:40:30 GMT
-# © 2017 Unicode®, Inc.
+# LineBreakTest-11.0.0.txt
+# Date: 2018-05-20, 09:03:09 GMT
+# © 2018 Unicode®, Inc.
 # Unicode and the Unicode Logo are registered trademarks of Unicode, Inc. in the U.S. and other countries.
 # For terms of use, see http://www.unicode.org/terms_of_use.html
 #
@@ -6242,174 +6242,174 @@
 × 0001 × 0020 ÷ 3041 ÷	#  × [0.3] <START OF HEADING> (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] HIRAGANA LETTER SMALL A (CJ_NS) ÷ [0.3]
 × 0001 × 0308 × 3041 ÷	#  × [0.3] <START OF HEADING> (CM1_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [21.03] HIRAGANA LETTER SMALL A (CJ_NS) ÷ [0.3]
 × 0001 × 0308 × 0020 ÷ 3041 ÷	#  × [0.3] <START OF HEADING> (CM1_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] HIRAGANA LETTER SMALL A (CJ_NS) ÷ [0.3]
-× 200D × 0023 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [28.0] NUMBER SIGN (AL) ÷ [0.3]
+× 200D × 0023 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] NUMBER SIGN (AL) ÷ [0.3]
 × 200D × 0020 ÷ 0023 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) ÷ [18.0] NUMBER SIGN (AL) ÷ [0.3]
-× 200D × 0308 × 0023 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [28.0] NUMBER SIGN (AL) ÷ [0.3]
-× 200D × 0308 × 0020 ÷ 0023 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] NUMBER SIGN (AL) ÷ [0.3]
-× 200D ÷ 2014 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) ÷ [999.0] EM DASH (B2) ÷ [0.3]
+× 200D × 0308 × 0023 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [28.0] NUMBER SIGN (AL) ÷ [0.3]
+× 200D × 0308 × 0020 ÷ 0023 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] NUMBER SIGN (AL) ÷ [0.3]
+× 200D × 2014 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] EM DASH (B2) ÷ [0.3]
 × 200D × 0020 ÷ 2014 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) ÷ [18.0] EM DASH (B2) ÷ [0.3]
-× 200D × 0308 ÷ 2014 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) ÷ [999.0] EM DASH (B2) ÷ [0.3]
-× 200D × 0308 × 0020 ÷ 2014 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] EM DASH (B2) ÷ [0.3]
-× 200D × 0009 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [21.01] <CHARACTER TABULATION> (BA) ÷ [0.3]
+× 200D × 0308 ÷ 2014 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) ÷ [999.0] EM DASH (B2) ÷ [0.3]
+× 200D × 0308 × 0020 ÷ 2014 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] EM DASH (B2) ÷ [0.3]
+× 200D × 0009 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] <CHARACTER TABULATION> (BA) ÷ [0.3]
 × 200D × 0020 ÷ 0009 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) ÷ [18.0] <CHARACTER TABULATION> (BA) ÷ [0.3]
-× 200D × 0308 × 0009 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [21.01] <CHARACTER TABULATION> (BA) ÷ [0.3]
-× 200D × 0308 × 0020 ÷ 0009 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] <CHARACTER TABULATION> (BA) ÷ [0.3]
-× 200D ÷ 00B4 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) ÷ [999.0] ACUTE ACCENT (BB) ÷ [0.3]
+× 200D × 0308 × 0009 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [21.01] <CHARACTER TABULATION> (BA) ÷ [0.3]
+× 200D × 0308 × 0020 ÷ 0009 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] <CHARACTER TABULATION> (BA) ÷ [0.3]
+× 200D × 00B4 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] ACUTE ACCENT (BB) ÷ [0.3]
 × 200D × 0020 ÷ 00B4 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) ÷ [18.0] ACUTE ACCENT (BB) ÷ [0.3]
-× 200D × 0308 ÷ 00B4 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) ÷ [999.0] ACUTE ACCENT (BB) ÷ [0.3]
-× 200D × 0308 × 0020 ÷ 00B4 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] ACUTE ACCENT (BB) ÷ [0.3]
+× 200D × 0308 ÷ 00B4 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) ÷ [999.0] ACUTE ACCENT (BB) ÷ [0.3]
+× 200D × 0308 × 0020 ÷ 00B4 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] ACUTE ACCENT (BB) ÷ [0.3]
 × 200D × 000B ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [6.0] <LINE TABULATION> (BK) ÷ [0.3]
 × 200D × 0020 × 000B ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) × [6.0] <LINE TABULATION> (BK) ÷ [0.3]
-× 200D × 0308 × 000B ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [6.0] <LINE TABULATION> (BK) ÷ [0.3]
-× 200D × 0308 × 0020 × 000B ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) × [6.0] <LINE TABULATION> (BK) ÷ [0.3]
-× 200D ÷ FFFC ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) ÷ [20.01] OBJECT REPLACEMENT CHARACTER (CB) ÷ [0.3]
+× 200D × 0308 × 000B ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [6.0] <LINE TABULATION> (BK) ÷ [0.3]
+× 200D × 0308 × 0020 × 000B ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) × [6.0] <LINE TABULATION> (BK) ÷ [0.3]
+× 200D × FFFC ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] OBJECT REPLACEMENT CHARACTER (CB) ÷ [0.3]
 × 200D × 0020 ÷ FFFC ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) ÷ [18.0] OBJECT REPLACEMENT CHARACTER (CB) ÷ [0.3]
-× 200D × 0308 ÷ FFFC ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) ÷ [20.01] OBJECT REPLACEMENT CHARACTER (CB) ÷ [0.3]
-× 200D × 0308 × 0020 ÷ FFFC ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] OBJECT REPLACEMENT CHARACTER (CB) ÷ [0.3]
-× 200D × 007D ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [13.04] RIGHT CURLY BRACKET (CL) ÷ [0.3]
+× 200D × 0308 ÷ FFFC ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) ÷ [20.01] OBJECT REPLACEMENT CHARACTER (CB) ÷ [0.3]
+× 200D × 0308 × 0020 ÷ FFFC ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] OBJECT REPLACEMENT CHARACTER (CB) ÷ [0.3]
+× 200D × 007D ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] RIGHT CURLY BRACKET (CL) ÷ [0.3]
 × 200D × 0020 × 007D ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) × [13.02] RIGHT CURLY BRACKET (CL) ÷ [0.3]
-× 200D × 0308 × 007D ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [13.04] RIGHT CURLY BRACKET (CL) ÷ [0.3]
-× 200D × 0308 × 0020 × 007D ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) × [13.02] RIGHT CURLY BRACKET (CL) ÷ [0.3]
-× 200D × 0029 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [13.04] RIGHT PARENTHESIS (CP) ÷ [0.3]
+× 200D × 0308 × 007D ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [13.04] RIGHT CURLY BRACKET (CL) ÷ [0.3]
+× 200D × 0308 × 0020 × 007D ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) × [13.02] RIGHT CURLY BRACKET (CL) ÷ [0.3]
+× 200D × 0029 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] RIGHT PARENTHESIS (CP) ÷ [0.3]
 × 200D × 0020 × 0029 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) × [13.02] RIGHT PARENTHESIS (CP) ÷ [0.3]
-× 200D × 0308 × 0029 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [13.04] RIGHT PARENTHESIS (CP) ÷ [0.3]
-× 200D × 0308 × 0020 × 0029 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) × [13.02] RIGHT PARENTHESIS (CP) ÷ [0.3]
+× 200D × 0308 × 0029 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [13.04] RIGHT PARENTHESIS (CP) ÷ [0.3]
+× 200D × 0308 × 0020 × 0029 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) × [13.02] RIGHT PARENTHESIS (CP) ÷ [0.3]
 × 200D × 000D ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [6.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
 × 200D × 0020 × 000D ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) × [6.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
-× 200D × 0308 × 000D ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [6.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
-× 200D × 0308 × 0020 × 000D ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) × [6.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
-× 200D × 0021 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [13.01] EXCLAMATION MARK (EX) ÷ [0.3]
+× 200D × 0308 × 000D ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [6.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+× 200D × 0308 × 0020 × 000D ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) × [6.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+× 200D × 0021 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] EXCLAMATION MARK (EX) ÷ [0.3]
 × 200D × 0020 × 0021 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) × [13.01] EXCLAMATION MARK (EX) ÷ [0.3]
-× 200D × 0308 × 0021 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [13.01] EXCLAMATION MARK (EX) ÷ [0.3]
-× 200D × 0308 × 0020 × 0021 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) × [13.01] EXCLAMATION MARK (EX) ÷ [0.3]
-× 200D × 00A0 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [12.3] NO-BREAK SPACE (GL) ÷ [0.3]
+× 200D × 0308 × 0021 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [13.01] EXCLAMATION MARK (EX) ÷ [0.3]
+× 200D × 0308 × 0020 × 0021 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) × [13.01] EXCLAMATION MARK (EX) ÷ [0.3]
+× 200D × 00A0 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] NO-BREAK SPACE (GL) ÷ [0.3]
 × 200D × 0020 ÷ 00A0 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) ÷ [18.0] NO-BREAK SPACE (GL) ÷ [0.3]
-× 200D × 0308 × 00A0 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [12.3] NO-BREAK SPACE (GL) ÷ [0.3]
-× 200D × 0308 × 0020 ÷ 00A0 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] NO-BREAK SPACE (GL) ÷ [0.3]
-× 200D ÷ AC00 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) ÷ [999.0] HANGUL SYLLABLE GA (H2) ÷ [0.3]
+× 200D × 0308 × 00A0 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [12.3] NO-BREAK SPACE (GL) ÷ [0.3]
+× 200D × 0308 × 0020 ÷ 00A0 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] NO-BREAK SPACE (GL) ÷ [0.3]
+× 200D × AC00 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] HANGUL SYLLABLE GA (H2) ÷ [0.3]
 × 200D × 0020 ÷ AC00 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) ÷ [18.0] HANGUL SYLLABLE GA (H2) ÷ [0.3]
-× 200D × 0308 ÷ AC00 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) ÷ [999.0] HANGUL SYLLABLE GA (H2) ÷ [0.3]
-× 200D × 0308 × 0020 ÷ AC00 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] HANGUL SYLLABLE GA (H2) ÷ [0.3]
-× 200D ÷ AC01 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) ÷ [999.0] HANGUL SYLLABLE GAG (H3) ÷ [0.3]
+× 200D × 0308 ÷ AC00 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) ÷ [999.0] HANGUL SYLLABLE GA (H2) ÷ [0.3]
+× 200D × 0308 × 0020 ÷ AC00 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] HANGUL SYLLABLE GA (H2) ÷ [0.3]
+× 200D × AC01 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] HANGUL SYLLABLE GAG (H3) ÷ [0.3]
 × 200D × 0020 ÷ AC01 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) ÷ [18.0] HANGUL SYLLABLE GAG (H3) ÷ [0.3]
-× 200D × 0308 ÷ AC01 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) ÷ [999.0] HANGUL SYLLABLE GAG (H3) ÷ [0.3]
-× 200D × 0308 × 0020 ÷ AC01 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] HANGUL SYLLABLE GAG (H3) ÷ [0.3]
-× 200D × 05D0 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [28.0] HEBREW LETTER ALEF (HL) ÷ [0.3]
+× 200D × 0308 ÷ AC01 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) ÷ [999.0] HANGUL SYLLABLE GAG (H3) ÷ [0.3]
+× 200D × 0308 × 0020 ÷ AC01 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] HANGUL SYLLABLE GAG (H3) ÷ [0.3]
+× 200D × 05D0 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] HEBREW LETTER ALEF (HL) ÷ [0.3]
 × 200D × 0020 ÷ 05D0 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) ÷ [18.0] HEBREW LETTER ALEF (HL) ÷ [0.3]
-× 200D × 0308 × 05D0 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [28.0] HEBREW LETTER ALEF (HL) ÷ [0.3]
-× 200D × 0308 × 0020 ÷ 05D0 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] HEBREW LETTER ALEF (HL) ÷ [0.3]
-× 200D × 002D ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [21.02] HYPHEN-MINUS (HY) ÷ [0.3]
+× 200D × 0308 × 05D0 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [28.0] HEBREW LETTER ALEF (HL) ÷ [0.3]
+× 200D × 0308 × 0020 ÷ 05D0 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] HEBREW LETTER ALEF (HL) ÷ [0.3]
+× 200D × 002D ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] HYPHEN-MINUS (HY) ÷ [0.3]
 × 200D × 0020 ÷ 002D ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) ÷ [18.0] HYPHEN-MINUS (HY) ÷ [0.3]
-× 200D × 0308 × 002D ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [21.02] HYPHEN-MINUS (HY) ÷ [0.3]
-× 200D × 0308 × 0020 ÷ 002D ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] HYPHEN-MINUS (HY) ÷ [0.3]
+× 200D × 0308 × 002D ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [21.02] HYPHEN-MINUS (HY) ÷ [0.3]
+× 200D × 0308 × 0020 ÷ 002D ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] HYPHEN-MINUS (HY) ÷ [0.3]
 × 200D × 231A ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] WATCH (ID) ÷ [0.3]
 × 200D × 0020 ÷ 231A ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) ÷ [18.0] WATCH (ID) ÷ [0.3]
-× 200D × 0308 ÷ 231A ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) ÷ [999.0] WATCH (ID) ÷ [0.3]
-× 200D × 0308 × 0020 ÷ 231A ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] WATCH (ID) ÷ [0.3]
-× 200D × 2024 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [22.01] ONE DOT LEADER (IN) ÷ [0.3]
+× 200D × 0308 ÷ 231A ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) ÷ [999.0] WATCH (ID) ÷ [0.3]
+× 200D × 0308 × 0020 ÷ 231A ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] WATCH (ID) ÷ [0.3]
+× 200D × 2024 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] ONE DOT LEADER (IN) ÷ [0.3]
 × 200D × 0020 ÷ 2024 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) ÷ [18.0] ONE DOT LEADER (IN) ÷ [0.3]
-× 200D × 0308 × 2024 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [22.01] ONE DOT LEADER (IN) ÷ [0.3]
-× 200D × 0308 × 0020 ÷ 2024 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] ONE DOT LEADER (IN) ÷ [0.3]
-× 200D × 002C ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [13.04] COMMA (IS) ÷ [0.3]
+× 200D × 0308 × 2024 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [22.01] ONE DOT LEADER (IN) ÷ [0.3]
+× 200D × 0308 × 0020 ÷ 2024 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] ONE DOT LEADER (IN) ÷ [0.3]
+× 200D × 002C ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMMA (IS) ÷ [0.3]
 × 200D × 0020 × 002C ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) × [13.02] COMMA (IS) ÷ [0.3]
-× 200D × 0308 × 002C ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [13.04] COMMA (IS) ÷ [0.3]
-× 200D × 0308 × 0020 × 002C ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) × [13.02] COMMA (IS) ÷ [0.3]
-× 200D ÷ 1100 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) ÷ [999.0] HANGUL CHOSEONG KIYEOK (JL) ÷ [0.3]
+× 200D × 0308 × 002C ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [13.04] COMMA (IS) ÷ [0.3]
+× 200D × 0308 × 0020 × 002C ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) × [13.02] COMMA (IS) ÷ [0.3]
+× 200D × 1100 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] HANGUL CHOSEONG KIYEOK (JL) ÷ [0.3]
 × 200D × 0020 ÷ 1100 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) ÷ [18.0] HANGUL CHOSEONG KIYEOK (JL) ÷ [0.3]
-× 200D × 0308 ÷ 1100 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) ÷ [999.0] HANGUL CHOSEONG KIYEOK (JL) ÷ [0.3]
-× 200D × 0308 × 0020 ÷ 1100 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] HANGUL CHOSEONG KIYEOK (JL) ÷ [0.3]
-× 200D ÷ 11A8 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) ÷ [999.0] HANGUL JONGSEONG KIYEOK (JT) ÷ [0.3]
+× 200D × 0308 ÷ 1100 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) ÷ [999.0] HANGUL CHOSEONG KIYEOK (JL) ÷ [0.3]
+× 200D × 0308 × 0020 ÷ 1100 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] HANGUL CHOSEONG KIYEOK (JL) ÷ [0.3]
+× 200D × 11A8 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] HANGUL JONGSEONG KIYEOK (JT) ÷ [0.3]
 × 200D × 0020 ÷ 11A8 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) ÷ [18.0] HANGUL JONGSEONG KIYEOK (JT) ÷ [0.3]
-× 200D × 0308 ÷ 11A8 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) ÷ [999.0] HANGUL JONGSEONG KIYEOK (JT) ÷ [0.3]
-× 200D × 0308 × 0020 ÷ 11A8 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] HANGUL JONGSEONG KIYEOK (JT) ÷ [0.3]
-× 200D ÷ 1160 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) ÷ [999.0] HANGUL JUNGSEONG FILLER (JV) ÷ [0.3]
+× 200D × 0308 ÷ 11A8 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) ÷ [999.0] HANGUL JONGSEONG KIYEOK (JT) ÷ [0.3]
+× 200D × 0308 × 0020 ÷ 11A8 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] HANGUL JONGSEONG KIYEOK (JT) ÷ [0.3]
+× 200D × 1160 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] HANGUL JUNGSEONG FILLER (JV) ÷ [0.3]
 × 200D × 0020 ÷ 1160 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) ÷ [18.0] HANGUL JUNGSEONG FILLER (JV) ÷ [0.3]
-× 200D × 0308 ÷ 1160 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) ÷ [999.0] HANGUL JUNGSEONG FILLER (JV) ÷ [0.3]
-× 200D × 0308 × 0020 ÷ 1160 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] HANGUL JUNGSEONG FILLER (JV) ÷ [0.3]
+× 200D × 0308 ÷ 1160 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) ÷ [999.0] HANGUL JUNGSEONG FILLER (JV) ÷ [0.3]
+× 200D × 0308 × 0020 ÷ 1160 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] HANGUL JUNGSEONG FILLER (JV) ÷ [0.3]
 × 200D × 000A ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [6.0] <LINE FEED (LF)> (LF) ÷ [0.3]
 × 200D × 0020 × 000A ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) × [6.0] <LINE FEED (LF)> (LF) ÷ [0.3]
-× 200D × 0308 × 000A ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [6.0] <LINE FEED (LF)> (LF) ÷ [0.3]
-× 200D × 0308 × 0020 × 000A ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) × [6.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+× 200D × 0308 × 000A ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [6.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+× 200D × 0308 × 0020 × 000A ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) × [6.0] <LINE FEED (LF)> (LF) ÷ [0.3]
 × 200D × 0085 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [6.0] <NEXT LINE (NEL)> (NL) ÷ [0.3]
 × 200D × 0020 × 0085 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) × [6.0] <NEXT LINE (NEL)> (NL) ÷ [0.3]
-× 200D × 0308 × 0085 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [6.0] <NEXT LINE (NEL)> (NL) ÷ [0.3]
-× 200D × 0308 × 0020 × 0085 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) × [6.0] <NEXT LINE (NEL)> (NL) ÷ [0.3]
-× 200D × 17D6 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [21.03] KHMER SIGN CAMNUC PII KUUH (NS) ÷ [0.3]
+× 200D × 0308 × 0085 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [6.0] <NEXT LINE (NEL)> (NL) ÷ [0.3]
+× 200D × 0308 × 0020 × 0085 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) × [6.0] <NEXT LINE (NEL)> (NL) ÷ [0.3]
+× 200D × 17D6 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] KHMER SIGN CAMNUC PII KUUH (NS) ÷ [0.3]
 × 200D × 0020 ÷ 17D6 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) ÷ [18.0] KHMER SIGN CAMNUC PII KUUH (NS) ÷ [0.3]
-× 200D × 0308 × 17D6 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [21.03] KHMER SIGN CAMNUC PII KUUH (NS) ÷ [0.3]
-× 200D × 0308 × 0020 ÷ 17D6 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] KHMER SIGN CAMNUC PII KUUH (NS) ÷ [0.3]
-× 200D × 0030 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [23.02] DIGIT ZERO (NU) ÷ [0.3]
+× 200D × 0308 × 17D6 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [21.03] KHMER SIGN CAMNUC PII KUUH (NS) ÷ [0.3]
+× 200D × 0308 × 0020 ÷ 17D6 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] KHMER SIGN CAMNUC PII KUUH (NS) ÷ [0.3]
+× 200D × 0030 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] DIGIT ZERO (NU) ÷ [0.3]
 × 200D × 0020 ÷ 0030 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) ÷ [18.0] DIGIT ZERO (NU) ÷ [0.3]
-× 200D × 0308 × 0030 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [23.02] DIGIT ZERO (NU) ÷ [0.3]
-× 200D × 0308 × 0020 ÷ 0030 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] DIGIT ZERO (NU) ÷ [0.3]
-× 200D × 0028 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [30.01] LEFT PARENTHESIS (OP) ÷ [0.3]
+× 200D × 0308 × 0030 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [23.02] DIGIT ZERO (NU) ÷ [0.3]
+× 200D × 0308 × 0020 ÷ 0030 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] DIGIT ZERO (NU) ÷ [0.3]
+× 200D × 0028 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] LEFT PARENTHESIS (OP) ÷ [0.3]
 × 200D × 0020 ÷ 0028 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) ÷ [18.0] LEFT PARENTHESIS (OP) ÷ [0.3]
-× 200D × 0308 × 0028 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [30.01] LEFT PARENTHESIS (OP) ÷ [0.3]
-× 200D × 0308 × 0020 ÷ 0028 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] LEFT PARENTHESIS (OP) ÷ [0.3]
-× 200D × 0025 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [24.03] PERCENT SIGN (PO) ÷ [0.3]
+× 200D × 0308 × 0028 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [30.01] LEFT PARENTHESIS (OP) ÷ [0.3]
+× 200D × 0308 × 0020 ÷ 0028 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] LEFT PARENTHESIS (OP) ÷ [0.3]
+× 200D × 0025 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] PERCENT SIGN (PO) ÷ [0.3]
 × 200D × 0020 ÷ 0025 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) ÷ [18.0] PERCENT SIGN (PO) ÷ [0.3]
-× 200D × 0308 × 0025 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [24.03] PERCENT SIGN (PO) ÷ [0.3]
-× 200D × 0308 × 0020 ÷ 0025 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] PERCENT SIGN (PO) ÷ [0.3]
-× 200D × 0024 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [24.03] DOLLAR SIGN (PR) ÷ [0.3]
+× 200D × 0308 × 0025 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [24.03] PERCENT SIGN (PO) ÷ [0.3]
+× 200D × 0308 × 0020 ÷ 0025 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] PERCENT SIGN (PO) ÷ [0.3]
+× 200D × 0024 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] DOLLAR SIGN (PR) ÷ [0.3]
 × 200D × 0020 ÷ 0024 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) ÷ [18.0] DOLLAR SIGN (PR) ÷ [0.3]
-× 200D × 0308 × 0024 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [24.03] DOLLAR SIGN (PR) ÷ [0.3]
-× 200D × 0308 × 0020 ÷ 0024 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] DOLLAR SIGN (PR) ÷ [0.3]
-× 200D × 0022 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [19.01] QUOTATION MARK (QU) ÷ [0.3]
+× 200D × 0308 × 0024 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [24.03] DOLLAR SIGN (PR) ÷ [0.3]
+× 200D × 0308 × 0020 ÷ 0024 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] DOLLAR SIGN (PR) ÷ [0.3]
+× 200D × 0022 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] QUOTATION MARK (QU) ÷ [0.3]
 × 200D × 0020 ÷ 0022 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) ÷ [18.0] QUOTATION MARK (QU) ÷ [0.3]
-× 200D × 0308 × 0022 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [19.01] QUOTATION MARK (QU) ÷ [0.3]
-× 200D × 0308 × 0020 ÷ 0022 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] QUOTATION MARK (QU) ÷ [0.3]
+× 200D × 0308 × 0022 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [19.01] QUOTATION MARK (QU) ÷ [0.3]
+× 200D × 0308 × 0020 ÷ 0022 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] QUOTATION MARK (QU) ÷ [0.3]
 × 200D × 0020 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) ÷ [0.3]
 × 200D × 0020 × 0020 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) × [7.01] SPACE (SP) ÷ [0.3]
-× 200D × 0308 × 0020 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [0.3]
-× 200D × 0308 × 0020 × 0020 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) × [7.01] SPACE (SP) ÷ [0.3]
-× 200D × 002F ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [13.04] SOLIDUS (SY) ÷ [0.3]
+× 200D × 0308 × 0020 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [0.3]
+× 200D × 0308 × 0020 × 0020 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) × [7.01] SPACE (SP) ÷ [0.3]
+× 200D × 002F ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] SOLIDUS (SY) ÷ [0.3]
 × 200D × 0020 × 002F ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) × [13.02] SOLIDUS (SY) ÷ [0.3]
-× 200D × 0308 × 002F ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [13.04] SOLIDUS (SY) ÷ [0.3]
-× 200D × 0308 × 0020 × 002F ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) × [13.02] SOLIDUS (SY) ÷ [0.3]
-× 200D × 2060 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [11.01] WORD JOINER (WJ) ÷ [0.3]
+× 200D × 0308 × 002F ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [13.04] SOLIDUS (SY) ÷ [0.3]
+× 200D × 0308 × 0020 × 002F ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) × [13.02] SOLIDUS (SY) ÷ [0.3]
+× 200D × 2060 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] WORD JOINER (WJ) ÷ [0.3]
 × 200D × 0020 × 2060 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) × [11.01] WORD JOINER (WJ) ÷ [0.3]
-× 200D × 0308 × 2060 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [11.01] WORD JOINER (WJ) ÷ [0.3]
-× 200D × 0308 × 0020 × 2060 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) × [11.01] WORD JOINER (WJ) ÷ [0.3]
+× 200D × 0308 × 2060 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [11.01] WORD JOINER (WJ) ÷ [0.3]
+× 200D × 0308 × 0020 × 2060 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) × [11.01] WORD JOINER (WJ) ÷ [0.3]
 × 200D × 200B ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.02] ZERO WIDTH SPACE (ZW) ÷ [0.3]
 × 200D × 0020 × 200B ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) × [7.02] ZERO WIDTH SPACE (ZW) ÷ [0.3]
-× 200D × 0308 × 200B ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.02] ZERO WIDTH SPACE (ZW) ÷ [0.3]
-× 200D × 0308 × 0020 × 200B ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) × [7.02] ZERO WIDTH SPACE (ZW) ÷ [0.3]
-× 200D ÷ 1F1E6 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+× 200D × 0308 × 200B ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.02] ZERO WIDTH SPACE (ZW) ÷ [0.3]
+× 200D × 0308 × 0020 × 200B ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) × [7.02] ZERO WIDTH SPACE (ZW) ÷ [0.3]
+× 200D × 1F1E6 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
 × 200D × 0020 ÷ 1F1E6 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) ÷ [18.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-× 200D × 0308 ÷ 1F1E6 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
-× 200D × 0308 × 0020 ÷ 1F1E6 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+× 200D × 0308 ÷ 1F1E6 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+× 200D × 0308 × 0020 ÷ 1F1E6 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
 × 200D × 261D ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] WHITE UP POINTING INDEX (EB) ÷ [0.3]
 × 200D × 0020 ÷ 261D ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) ÷ [18.0] WHITE UP POINTING INDEX (EB) ÷ [0.3]
-× 200D × 0308 ÷ 261D ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) ÷ [999.0] WHITE UP POINTING INDEX (EB) ÷ [0.3]
-× 200D × 0308 × 0020 ÷ 261D ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] WHITE UP POINTING INDEX (EB) ÷ [0.3]
+× 200D × 0308 ÷ 261D ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) ÷ [999.0] WHITE UP POINTING INDEX (EB) ÷ [0.3]
+× 200D × 0308 × 0020 ÷ 261D ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] WHITE UP POINTING INDEX (EB) ÷ [0.3]
 × 200D × 1F3FB ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (EM) ÷ [0.3]
 × 200D × 0020 ÷ 1F3FB ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) ÷ [18.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (EM) ÷ [0.3]
-× 200D × 0308 ÷ 1F3FB ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) ÷ [999.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (EM) ÷ [0.3]
-× 200D × 0308 × 0020 ÷ 1F3FB ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (EM) ÷ [0.3]
-× 200D × 0001 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] <START OF HEADING> (CM1_CM) ÷ [0.3]
+× 200D × 0308 ÷ 1F3FB ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) ÷ [999.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (EM) ÷ [0.3]
+× 200D × 0308 × 0020 ÷ 1F3FB ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] EMOJI MODIFIER FITZPATRICK TYPE-1-2 (EM) ÷ [0.3]
+× 200D × 0001 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] <START OF HEADING> (CM1_CM) ÷ [0.3]
 × 200D × 0020 ÷ 0001 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) ÷ [18.0] <START OF HEADING> (CM1_CM) ÷ [0.3]
-× 200D × 0308 × 0001 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [9.0] <START OF HEADING> (CM1_CM) ÷ [0.3]
-× 200D × 0308 × 0020 ÷ 0001 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] <START OF HEADING> (CM1_CM) ÷ [0.3]
-× 200D × 200D ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) ÷ [0.3]
+× 200D × 0308 × 0001 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [9.0] <START OF HEADING> (CM1_CM) ÷ [0.3]
+× 200D × 0308 × 0020 ÷ 0001 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] <START OF HEADING> (CM1_CM) ÷ [0.3]
+× 200D × 200D ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) ÷ [0.3]
 × 200D × 0020 ÷ 200D ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) ÷ [18.0] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) ÷ [0.3]
-× 200D × 0308 × 200D ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [9.0] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) ÷ [0.3]
-× 200D × 0308 × 0020 ÷ 200D ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) ÷ [0.3]
-× 200D × 00A7 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [28.0] SECTION SIGN (AI_AL) ÷ [0.3]
+× 200D × 0308 × 200D ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [9.0] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) ÷ [0.3]
+× 200D × 0308 × 0020 ÷ 200D ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) ÷ [0.3]
+× 200D × 00A7 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] SECTION SIGN (AI_AL) ÷ [0.3]
 × 200D × 0020 ÷ 00A7 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) ÷ [18.0] SECTION SIGN (AI_AL) ÷ [0.3]
-× 200D × 0308 × 00A7 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [28.0] SECTION SIGN (AI_AL) ÷ [0.3]
-× 200D × 0308 × 0020 ÷ 00A7 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] SECTION SIGN (AI_AL) ÷ [0.3]
-× 200D × 50005 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [28.0] <reserved-50005> (XX_AL) ÷ [0.3]
+× 200D × 0308 × 00A7 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [28.0] SECTION SIGN (AI_AL) ÷ [0.3]
+× 200D × 0308 × 0020 ÷ 00A7 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] SECTION SIGN (AI_AL) ÷ [0.3]
+× 200D × 50005 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] <reserved-50005> (XX_AL) ÷ [0.3]
 × 200D × 0020 ÷ 50005 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) ÷ [18.0] <reserved-50005> (XX_AL) ÷ [0.3]
-× 200D × 0308 × 50005 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [28.0] <reserved-50005> (XX_AL) ÷ [0.3]
-× 200D × 0308 × 0020 ÷ 50005 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] <reserved-50005> (XX_AL) ÷ [0.3]
-× 200D × 0E01 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [28.0] THAI CHARACTER KO KAI (SA_AL) ÷ [0.3]
+× 200D × 0308 × 50005 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [28.0] <reserved-50005> (XX_AL) ÷ [0.3]
+× 200D × 0308 × 0020 ÷ 50005 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] <reserved-50005> (XX_AL) ÷ [0.3]
+× 200D × 0E01 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] THAI CHARACTER KO KAI (SA_AL) ÷ [0.3]
 × 200D × 0020 ÷ 0E01 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) ÷ [18.0] THAI CHARACTER KO KAI (SA_AL) ÷ [0.3]
-× 200D × 0308 × 0E01 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [28.0] THAI CHARACTER KO KAI (SA_AL) ÷ [0.3]
-× 200D × 0308 × 0020 ÷ 0E01 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] THAI CHARACTER KO KAI (SA_AL) ÷ [0.3]
-× 200D × 3041 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [21.03] HIRAGANA LETTER SMALL A (CJ_NS) ÷ [0.3]
+× 200D × 0308 × 0E01 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [28.0] THAI CHARACTER KO KAI (SA_AL) ÷ [0.3]
+× 200D × 0308 × 0020 ÷ 0E01 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] THAI CHARACTER KO KAI (SA_AL) ÷ [0.3]
+× 200D × 3041 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] HIRAGANA LETTER SMALL A (CJ_NS) ÷ [0.3]
 × 200D × 0020 ÷ 3041 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) ÷ [18.0] HIRAGANA LETTER SMALL A (CJ_NS) ÷ [0.3]
-× 200D × 0308 × 3041 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [21.03] HIRAGANA LETTER SMALL A (CJ_NS) ÷ [0.3]
-× 200D × 0308 × 0020 ÷ 3041 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] HIRAGANA LETTER SMALL A (CJ_NS) ÷ [0.3]
+× 200D × 0308 × 3041 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [21.03] HIRAGANA LETTER SMALL A (CJ_NS) ÷ [0.3]
+× 200D × 0308 × 0020 ÷ 3041 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] HIRAGANA LETTER SMALL A (CJ_NS) ÷ [0.3]
 × 00A7 × 0023 ÷	#  × [0.3] SECTION SIGN (AI_AL) × [28.0] NUMBER SIGN (AL) ÷ [0.3]
 × 00A7 × 0020 ÷ 0023 ÷	#  × [0.3] SECTION SIGN (AI_AL) × [7.01] SPACE (SP) ÷ [18.0] NUMBER SIGN (AL) ÷ [0.3]
 × 00A7 × 0308 × 0023 ÷	#  × [0.3] SECTION SIGN (AI_AL) × [9.0] COMBINING DIAERESIS (CM1_CM) × [28.0] NUMBER SIGN (AL) ÷ [0.3]
@@ -7084,7 +7084,7 @@
 × 3041 × 0308 × 0020 ÷ 3041 ÷	#  × [0.3] HIRAGANA LETTER SMALL A (CJ_NS) × [9.0] COMBINING DIAERESIS (CM1_CM) × [7.01] SPACE (SP) ÷ [18.0] HIRAGANA LETTER SMALL A (CJ_NS) ÷ [0.3]
 × 000D × 000A ÷ 0061 × 000A ÷ 0308 ÷	#  × [0.3] <CARRIAGE RETURN (CR)> (CR) × [5.01] <LINE FEED (LF)> (LF) ÷ [5.03] LATIN SMALL LETTER A (AL) × [6.0] <LINE FEED (LF)> (LF) ÷ [5.03] COMBINING DIAERESIS (CM1_CM) ÷ [0.3]
 × 0061 × 0308 ÷	#  × [0.3] LATIN SMALL LETTER A (AL) × [9.0] COMBINING DIAERESIS (CM1_CM) ÷ [0.3]
-× 0020 ÷ 200D × 0646 ÷	#  × [0.3] SPACE (SP) ÷ [18.0] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [28.0] ARABIC LETTER NOON (AL) ÷ [0.3]
+× 0020 ÷ 200D × 0646 ÷	#  × [0.3] SPACE (SP) ÷ [18.0] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] ARABIC LETTER NOON (AL) ÷ [0.3]
 × 0646 × 200D × 0020 ÷	#  × [0.3] ARABIC LETTER NOON (AL) × [9.0] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [7.01] SPACE (SP) ÷ [0.3]
 × 000B ÷ 3041 ÷	#  × [0.3] <LINE TABULATION> (BK) ÷ [4.0] HIRAGANA LETTER SMALL A (CJ_NS) ÷ [0.3]
 × 000D ÷ 3041 ÷	#  × [0.3] <CARRIAGE RETURN (CR)> (CR) ÷ [5.02] HIRAGANA LETTER SMALL A (CJ_NS) ÷ [0.3]
@@ -7093,8 +7093,8 @@
 × 3041 × 2060 ÷	#  × [0.3] HIRAGANA LETTER SMALL A (CJ_NS) × [11.01] WORD JOINER (WJ) ÷ [0.3]
 × 2060 × 3041 ÷	#  × [0.3] WORD JOINER (WJ) × [11.02] HIRAGANA LETTER SMALL A (CJ_NS) ÷ [0.3]
 × 3041 × 0308 × 00A0 ÷	#  × [0.3] HIRAGANA LETTER SMALL A (CJ_NS) × [9.0] COMBINING DIAERESIS (CM1_CM) × [12.2] NO-BREAK SPACE (GL) ÷ [0.3]
-× 200D × 00A0 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [12.3] NO-BREAK SPACE (GL) ÷ [0.3]
-× 200D × 002F ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [13.04] SOLIDUS (SY) ÷ [0.3]
+× 200D × 00A0 ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] NO-BREAK SPACE (GL) ÷ [0.3]
+× 200D × 002F ÷	#  × [0.3] ZERO WIDTH JOINER (ZWJ_O_ZWJ_CM) × [8.1] SOLIDUS (SY) ÷ [0.3]
 × 2014 × 2014 ÷	#  × [0.3] EM DASH (B2) × [17.0] EM DASH (B2) ÷ [0.3]
 × 3041 ÷ FFFC ÷	#  × [0.3] HIRAGANA LETTER SMALL A (CJ_NS) ÷ [20.01] OBJECT REPLACEMENT CHARACTER (CB) ÷ [0.3]
 × FFFC ÷ 3041 ÷	#  × [0.3] OBJECT REPLACEMENT CHARACTER (CB) ÷ [20.02] HIRAGANA LETTER SMALL A (CJ_NS) ÷ [0.3]
diff --git a/lib/stdlib/test/unicode_util_SUITE_data/NormalizationTest.txt b/lib/stdlib/test/unicode_util_SUITE_data/NormalizationTest.txt
index 71f2371c5e..72a31bcdf1 100644
--- a/lib/stdlib/test/unicode_util_SUITE_data/NormalizationTest.txt
+++ b/lib/stdlib/test/unicode_util_SUITE_data/NormalizationTest.txt
@@ -1,6 +1,6 @@
-# NormalizationTest-10.0.0.txt
-# Date: 2017-03-08, 08:41:55 GMT
-# © 2017 Unicode®, Inc.
+# NormalizationTest-11.0.0.txt
+# Date: 2018-02-19, 18:33:08 GMT
+# © 2018 Unicode®, Inc.
 # Unicode and the Unicode Logo are registered trademarks of Unicode, Inc. in the U.S. and other countries.
 # For terms of use, see http://www.unicode.org/terms_of_use.html
 #
@@ -17479,6 +17479,8 @@ FFEE;FFEE;FFEE;25CB;25CB; # (￮; ￮; ￮; ○; ○; ) HALFWIDTH WHITE CIRCLE
 0061 07F2 059A 0316 302A 0062;0061 302A 07F2 0316 059A 0062;0061 302A 07F2 0316 059A 0062;0061 302A 07F2 0316 059A 0062;0061 302A 07F2 0316 059A 0062; # (a◌߲◌֚◌̖◌〪b; a◌〪◌߲◌̖◌֚b; a◌〪◌߲◌̖◌֚b; a◌〪◌߲◌̖◌֚b; a◌〪◌߲◌̖◌֚b; ) LATIN SMALL LETTER A, NKO COMBINING NASALIZATION MARK, HEBREW ACCENT YETIV, COMBINING GRAVE ACCENT BELOW, IDEOGRAPHIC LEVEL TONE MARK, LATIN SMALL LETTER B
 0061 0315 0300 05AE 07F3 0062;00E0 05AE 07F3 0315 0062;0061 05AE 0300 07F3 0315 0062;00E0 05AE 07F3 0315 0062;0061 05AE 0300 07F3 0315 0062; # (a◌̕◌̀◌֮◌߳b; à◌֮◌߳◌̕b; a◌֮◌̀◌߳◌̕b; à◌֮◌߳◌̕b; a◌֮◌̀◌߳◌̕b; ) LATIN SMALL LETTER A, COMBINING COMMA ABOVE RIGHT, COMBINING GRAVE ACCENT, HEBREW ACCENT ZINOR, NKO COMBINING DOUBLE DOT ABOVE, LATIN SMALL LETTER B
 0061 07F3 0315 0300 05AE 0062;0061 05AE 07F3 0300 0315 0062;0061 05AE 07F3 0300 0315 0062;0061 05AE 07F3 0300 0315 0062;0061 05AE 07F3 0300 0315 0062; # (a◌߳◌̕◌̀◌֮b; a◌֮◌߳◌̀◌̕b; a◌֮◌߳◌̀◌̕b; a◌֮◌߳◌̀◌̕b; a◌֮◌߳◌̀◌̕b; ) LATIN SMALL LETTER A, NKO COMBINING DOUBLE DOT ABOVE, COMBINING COMMA ABOVE RIGHT, COMBINING GRAVE ACCENT, HEBREW ACCENT ZINOR, LATIN SMALL LETTER B
+0061 059A 0316 302A 07FD 0062;0061 302A 0316 07FD 059A 0062;0061 302A 0316 07FD 059A 0062;0061 302A 0316 07FD 059A 0062;0061 302A 0316 07FD 059A 0062; # (a◌֚◌̖◌〪◌߽b; a◌〪◌̖◌߽◌֚b; a◌〪◌̖◌߽◌֚b; a◌〪◌̖◌߽◌֚b; a◌〪◌̖◌߽◌֚b; ) LATIN SMALL LETTER A, HEBREW ACCENT YETIV, COMBINING GRAVE ACCENT BELOW, IDEOGRAPHIC LEVEL TONE MARK, NKO DANTAYALAN, LATIN SMALL LETTER B
+0061 07FD 059A 0316 302A 0062;0061 302A 07FD 0316 059A 0062;0061 302A 07FD 0316 059A 0062;0061 302A 07FD 0316 059A 0062;0061 302A 07FD 0316 059A 0062; # (a◌߽◌֚◌̖◌〪b; a◌〪◌߽◌̖◌֚b; a◌〪◌߽◌̖◌֚b; a◌〪◌߽◌̖◌֚b; a◌〪◌߽◌̖◌֚b; ) LATIN SMALL LETTER A, NKO DANTAYALAN, HEBREW ACCENT YETIV, COMBINING GRAVE ACCENT BELOW, IDEOGRAPHIC LEVEL TONE MARK, LATIN SMALL LETTER B
 0061 0315 0300 05AE 0816 0062;00E0 05AE 0816 0315 0062;0061 05AE 0300 0816 0315 0062;00E0 05AE 0816 0315 0062;0061 05AE 0300 0816 0315 0062; # (a◌̕◌̀◌֮◌ࠖb; à◌֮◌ࠖ◌̕b; a◌֮◌̀◌ࠖ◌̕b; à◌֮◌ࠖ◌̕b; a◌֮◌̀◌ࠖ◌̕b; ) LATIN SMALL LETTER A, COMBINING COMMA ABOVE RIGHT, COMBINING GRAVE ACCENT, HEBREW ACCENT ZINOR, SAMARITAN MARK IN, LATIN SMALL LETTER B
 0061 0816 0315 0300 05AE 0062;0061 05AE 0816 0300 0315 0062;0061 05AE 0816 0300 0315 0062;0061 05AE 0816 0300 0315 0062;0061 05AE 0816 0300 0315 0062; # (a◌ࠖ◌̕◌̀◌֮b; a◌֮◌ࠖ◌̀◌̕b; a◌֮◌ࠖ◌̀◌̕b; a◌֮◌ࠖ◌̀◌̕b; a◌֮◌ࠖ◌̀◌̕b; ) LATIN SMALL LETTER A, SAMARITAN MARK IN, COMBINING COMMA ABOVE RIGHT, COMBINING GRAVE ACCENT, HEBREW ACCENT ZINOR, LATIN SMALL LETTER B
 0061 0315 0300 05AE 0817 0062;00E0 05AE 0817 0315 0062;0061 05AE 0300 0817 0315 0062;00E0 05AE 0817 0315 0062;0061 05AE 0300 0817 0315 0062; # (a◌̕◌̀◌֮◌ࠗb; à◌֮◌ࠗ◌̕b; a◌֮◌̀◌ࠗ◌̕b; à◌֮◌ࠗ◌̕b; a◌֮◌̀◌ࠗ◌̕b; ) LATIN SMALL LETTER A, COMBINING COMMA ABOVE RIGHT, COMBINING GRAVE ACCENT, HEBREW ACCENT ZINOR, SAMARITAN MARK IN-ALAF, LATIN SMALL LETTER B
@@ -17527,6 +17529,8 @@ FFEE;FFEE;FFEE;25CB;25CB; # (￮; ￮; ￮; ○; ○; ) HALFWIDTH WHITE CIRCLE
 0061 085A 059A 0316 302A 0062;0061 302A 085A 0316 059A 0062;0061 302A 085A 0316 059A 0062;0061 302A 085A 0316 059A 0062;0061 302A 085A 0316 059A 0062; # (a◌࡚◌֚◌̖◌〪b; a◌〪◌࡚◌̖◌֚b; a◌〪◌࡚◌̖◌֚b; a◌〪◌࡚◌̖◌֚b; a◌〪◌࡚◌̖◌֚b; ) LATIN SMALL LETTER A, MANDAIC VOCALIZATION MARK, HEBREW ACCENT YETIV, COMBINING GRAVE ACCENT BELOW, IDEOGRAPHIC LEVEL TONE MARK, LATIN SMALL LETTER B
 0061 059A 0316 302A 085B 0062;0061 302A 0316 085B 059A 0062;0061 302A 0316 085B 059A 0062;0061 302A 0316 085B 059A 0062;0061 302A 0316 085B 059A 0062; # (a◌֚◌̖◌〪◌࡛b; a◌〪◌̖◌࡛◌֚b; a◌〪◌̖◌࡛◌֚b; a◌〪◌̖◌࡛◌֚b; a◌〪◌̖◌࡛◌֚b; ) LATIN SMALL LETTER A, HEBREW ACCENT YETIV, COMBINING GRAVE ACCENT BELOW, IDEOGRAPHIC LEVEL TONE MARK, MANDAIC GEMINATION MARK, LATIN SMALL LETTER B
 0061 085B 059A 0316 302A 0062;0061 302A 085B 0316 059A 0062;0061 302A 085B 0316 059A 0062;0061 302A 085B 0316 059A 0062;0061 302A 085B 0316 059A 0062; # (a◌࡛◌֚◌̖◌〪b; a◌〪◌࡛◌̖◌֚b; a◌〪◌࡛◌̖◌֚b; a◌〪◌࡛◌̖◌֚b; a◌〪◌࡛◌̖◌֚b; ) LATIN SMALL LETTER A, MANDAIC GEMINATION MARK, HEBREW ACCENT YETIV, COMBINING GRAVE ACCENT BELOW, IDEOGRAPHIC LEVEL TONE MARK, LATIN SMALL LETTER B
+0061 059A 0316 302A 08D3 0062;0061 302A 0316 08D3 059A 0062;0061 302A 0316 08D3 059A 0062;0061 302A 0316 08D3 059A 0062;0061 302A 0316 08D3 059A 0062; # (a◌֚◌̖◌〪◌࣓b; a◌〪◌̖◌࣓◌֚b; a◌〪◌̖◌࣓◌֚b; a◌〪◌̖◌࣓◌֚b; a◌〪◌̖◌࣓◌֚b; ) LATIN SMALL LETTER A, HEBREW ACCENT YETIV, COMBINING GRAVE ACCENT BELOW, IDEOGRAPHIC LEVEL TONE MARK, ARABIC SMALL LOW WAW, LATIN SMALL LETTER B
+0061 08D3 059A 0316 302A 0062;0061 302A 08D3 0316 059A 0062;0061 302A 08D3 0316 059A 0062;0061 302A 08D3 0316 059A 0062;0061 302A 08D3 0316 059A 0062; # (a◌࣓◌֚◌̖◌〪b; a◌〪◌࣓◌̖◌֚b; a◌〪◌࣓◌̖◌֚b; a◌〪◌࣓◌̖◌֚b; a◌〪◌࣓◌̖◌֚b; ) LATIN SMALL LETTER A, ARABIC SMALL LOW WAW, HEBREW ACCENT YETIV, COMBINING GRAVE ACCENT BELOW, IDEOGRAPHIC LEVEL TONE MARK, LATIN SMALL LETTER B
 0061 0315 0300 05AE 08D4 0062;00E0 05AE 08D4 0315 0062;0061 05AE 0300 08D4 0315 0062;00E0 05AE 08D4 0315 0062;0061 05AE 0300 08D4 0315 0062; # (a◌̕◌̀◌֮◌ࣔb; à◌֮◌ࣔ◌̕b; a◌֮◌̀◌ࣔ◌̕b; à◌֮◌ࣔ◌̕b; a◌֮◌̀◌ࣔ◌̕b; ) LATIN SMALL LETTER A, COMBINING COMMA ABOVE RIGHT, COMBINING GRAVE ACCENT, HEBREW ACCENT ZINOR, ARABIC SMALL HIGH WORD AR-RUB, LATIN SMALL LETTER B
 0061 08D4 0315 0300 05AE 0062;0061 05AE 08D4 0300 0315 0062;0061 05AE 08D4 0300 0315 0062;0061 05AE 08D4 0300 0315 0062;0061 05AE 08D4 0300 0315 0062; # (a◌ࣔ◌̕◌̀◌֮b; a◌֮◌ࣔ◌̀◌̕b; a◌֮◌ࣔ◌̀◌̕b; a◌֮◌ࣔ◌̀◌̕b; a◌֮◌ࣔ◌̀◌̕b; ) LATIN SMALL LETTER A, ARABIC SMALL HIGH WORD AR-RUB, COMBINING COMMA ABOVE RIGHT, COMBINING GRAVE ACCENT, HEBREW ACCENT ZINOR, LATIN SMALL LETTER B
 0061 0315 0300 05AE 08D5 0062;00E0 05AE 08D5 0315 0062;0061 05AE 0300 08D5 0315 0062;00E0 05AE 08D5 0315 0062;0061 05AE 0300 08D5 0315 0062; # (a◌̕◌̀◌֮◌ࣕb; à◌֮◌ࣕ◌̕b; a◌֮◌̀◌ࣕ◌̕b; à◌֮◌ࣕ◌̕b; a◌֮◌̀◌ࣕ◌̕b; ) LATIN SMALL LETTER A, COMBINING COMMA ABOVE RIGHT, COMBINING GRAVE ACCENT, HEBREW ACCENT ZINOR, ARABIC SMALL HIGH SAD, LATIN SMALL LETTER B
@@ -17629,6 +17633,8 @@ FFEE;FFEE;FFEE;25CB;25CB; # (￮; ￮; ￮; ○; ○; ) HALFWIDTH WHITE CIRCLE
 0061 09BC 3099 093C 0334 0062;0061 0334 09BC 093C 3099 0062;0061 0334 09BC 093C 3099 0062;0061 0334 09BC 093C 3099 0062;0061 0334 09BC 093C 3099 0062; # (a◌়◌゙◌़◌̴b; a◌̴◌়◌़◌゙b; a◌̴◌়◌़◌゙b; a◌̴◌়◌़◌゙b; a◌̴◌়◌़◌゙b; ) LATIN SMALL LETTER A, BENGALI SIGN NUKTA, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, DEVANAGARI SIGN NUKTA, COMBINING TILDE OVERLAY, LATIN SMALL LETTER B
 0061 05B0 094D 3099 09CD 0062;0061 3099 094D 09CD 05B0 0062;0061 3099 094D 09CD 05B0 0062;0061 3099 094D 09CD 05B0 0062;0061 3099 094D 09CD 05B0 0062; # (a◌ְ◌्◌゙◌্b; a◌゙◌्◌্◌ְb; a◌゙◌्◌্◌ְb; a◌゙◌्◌্◌ְb; a◌゙◌्◌্◌ְb; ) LATIN SMALL LETTER A, HEBREW POINT SHEVA, DEVANAGARI SIGN VIRAMA, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, BENGALI SIGN VIRAMA, LATIN SMALL LETTER B
 0061 09CD 05B0 094D 3099 0062;0061 3099 09CD 094D 05B0 0062;0061 3099 09CD 094D 05B0 0062;0061 3099 09CD 094D 05B0 0062;0061 3099 09CD 094D 05B0 0062; # (a◌্◌ְ◌्◌゙b; a◌゙◌্◌्◌ְb; a◌゙◌্◌्◌ְb; a◌゙◌্◌्◌ְb; a◌゙◌্◌्◌ְb; ) LATIN SMALL LETTER A, BENGALI SIGN VIRAMA, HEBREW POINT SHEVA, DEVANAGARI SIGN VIRAMA, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, LATIN SMALL LETTER B
+0061 0315 0300 05AE 09FE 0062;00E0 05AE 09FE 0315 0062;0061 05AE 0300 09FE 0315 0062;00E0 05AE 09FE 0315 0062;0061 05AE 0300 09FE 0315 0062; # (a◌̕◌̀◌֮◌৾b; à◌֮◌৾◌̕b; a◌֮◌̀◌৾◌̕b; à◌֮◌৾◌̕b; a◌֮◌̀◌৾◌̕b; ) LATIN SMALL LETTER A, COMBINING COMMA ABOVE RIGHT, COMBINING GRAVE ACCENT, HEBREW ACCENT ZINOR, BENGALI SANDHI MARK, LATIN SMALL LETTER B
+0061 09FE 0315 0300 05AE 0062;0061 05AE 09FE 0300 0315 0062;0061 05AE 09FE 0300 0315 0062;0061 05AE 09FE 0300 0315 0062;0061 05AE 09FE 0300 0315 0062; # (a◌৾◌̕◌̀◌֮b; a◌֮◌৾◌̀◌̕b; a◌֮◌৾◌̀◌̕b; a◌֮◌৾◌̀◌̕b; a◌֮◌৾◌̀◌̕b; ) LATIN SMALL LETTER A, BENGALI SANDHI MARK, COMBINING COMMA ABOVE RIGHT, COMBINING GRAVE ACCENT, HEBREW ACCENT ZINOR, LATIN SMALL LETTER B
 0061 3099 093C 0334 0A3C 0062;0061 0334 093C 0A3C 3099 0062;0061 0334 093C 0A3C 3099 0062;0061 0334 093C 0A3C 3099 0062;0061 0334 093C 0A3C 3099 0062; # (a◌゙◌़◌̴◌਼b; a◌̴◌़◌਼◌゙b; a◌̴◌़◌਼◌゙b; a◌̴◌़◌਼◌゙b; a◌̴◌़◌਼◌゙b; ) LATIN SMALL LETTER A, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, DEVANAGARI SIGN NUKTA, COMBINING TILDE OVERLAY, GURMUKHI SIGN NUKTA, LATIN SMALL LETTER B
 0061 0A3C 3099 093C 0334 0062;0061 0334 0A3C 093C 3099 0062;0061 0334 0A3C 093C 3099 0062;0061 0334 0A3C 093C 3099 0062;0061 0334 0A3C 093C 3099 0062; # (a◌਼◌゙◌़◌̴b; a◌̴◌਼◌़◌゙b; a◌̴◌਼◌़◌゙b; a◌̴◌਼◌़◌゙b; a◌̴◌਼◌़◌゙b; ) LATIN SMALL LETTER A, GURMUKHI SIGN NUKTA, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, DEVANAGARI SIGN NUKTA, COMBINING TILDE OVERLAY, LATIN SMALL LETTER B
 0061 05B0 094D 3099 0A4D 0062;0061 3099 094D 0A4D 05B0 0062;0061 3099 094D 0A4D 05B0 0062;0061 3099 094D 0A4D 05B0 0062;0061 3099 094D 0A4D 05B0 0062; # (a◌ְ◌्◌゙◌੍b; a◌゙◌्◌੍◌ְb; a◌゙◌्◌੍◌ְb; a◌゙◌्◌੍◌ְb; a◌゙◌्◌੍◌ְb; ) LATIN SMALL LETTER A, HEBREW POINT SHEVA, DEVANAGARI SIGN VIRAMA, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, GURMUKHI SIGN VIRAMA, LATIN SMALL LETTER B
@@ -18329,6 +18335,36 @@ FFEE;FFEE;FFEE;25CB;25CB; # (￮; ￮; ￮; ○; ○; ) HALFWIDTH WHITE CIRCLE
 0061 10AE5 0315 0300 05AE 0062;0061 05AE 10AE5 0300 0315 0062;0061 05AE 10AE5 0300 0315 0062;0061 05AE 10AE5 0300 0315 0062;0061 05AE 10AE5 0300 0315 0062; # (a◌𐫥◌̕◌̀◌֮b; a◌֮◌𐫥◌̀◌̕b; a◌֮◌𐫥◌̀◌̕b; a◌֮◌𐫥◌̀◌̕b; a◌֮◌𐫥◌̀◌̕b; ) LATIN SMALL LETTER A, MANICHAEAN ABBREVIATION MARK ABOVE, COMBINING COMMA ABOVE RIGHT, COMBINING GRAVE ACCENT, HEBREW ACCENT ZINOR, LATIN SMALL LETTER B
 0061 059A 0316 302A 10AE6 0062;0061 302A 0316 10AE6 059A 0062;0061 302A 0316 10AE6 059A 0062;0061 302A 0316 10AE6 059A 0062;0061 302A 0316 10AE6 059A 0062; # (a◌֚◌̖◌〪◌𐫦b; a◌〪◌̖◌𐫦◌֚b; a◌〪◌̖◌𐫦◌֚b; a◌〪◌̖◌𐫦◌֚b; a◌〪◌̖◌𐫦◌֚b; ) LATIN SMALL LETTER A, HEBREW ACCENT YETIV, COMBINING GRAVE ACCENT BELOW, IDEOGRAPHIC LEVEL TONE MARK, MANICHAEAN ABBREVIATION MARK BELOW, LATIN SMALL LETTER B
 0061 10AE6 059A 0316 302A 0062;0061 302A 10AE6 0316 059A 0062;0061 302A 10AE6 0316 059A 0062;0061 302A 10AE6 0316 059A 0062;0061 302A 10AE6 0316 059A 0062; # (a◌𐫦◌֚◌̖◌〪b; a◌〪◌𐫦◌̖◌֚b; a◌〪◌𐫦◌̖◌֚b; a◌〪◌𐫦◌̖◌֚b; a◌〪◌𐫦◌̖◌֚b; ) LATIN SMALL LETTER A, MANICHAEAN ABBREVIATION MARK BELOW, HEBREW ACCENT YETIV, COMBINING GRAVE ACCENT BELOW, IDEOGRAPHIC LEVEL TONE MARK, LATIN SMALL LETTER B
+0061 0315 0300 05AE 10D24 0062;00E0 05AE 10D24 0315 0062;0061 05AE 0300 10D24 0315 0062;00E0 05AE 10D24 0315 0062;0061 05AE 0300 10D24 0315 0062; # (a◌̕◌̀◌֮◌𐴤b; à◌֮◌𐴤◌̕b; a◌֮◌̀◌𐴤◌̕b; à◌֮◌𐴤◌̕b; a◌֮◌̀◌𐴤◌̕b; ) LATIN SMALL LETTER A, COMBINING COMMA ABOVE RIGHT, COMBINING GRAVE ACCENT, HEBREW ACCENT ZINOR, HANIFI ROHINGYA SIGN HARBAHAY, LATIN SMALL LETTER B
+0061 10D24 0315 0300 05AE 0062;0061 05AE 10D24 0300 0315 0062;0061 05AE 10D24 0300 0315 0062;0061 05AE 10D24 0300 0315 0062;0061 05AE 10D24 0300 0315 0062; # (a◌𐴤◌̕◌̀◌֮b; a◌֮◌𐴤◌̀◌̕b; a◌֮◌𐴤◌̀◌̕b; a◌֮◌𐴤◌̀◌̕b; a◌֮◌𐴤◌̀◌̕b; ) LATIN SMALL LETTER A, HANIFI ROHINGYA SIGN HARBAHAY, COMBINING COMMA ABOVE RIGHT, COMBINING GRAVE ACCENT, HEBREW ACCENT ZINOR, LATIN SMALL LETTER B
+0061 0315 0300 05AE 10D25 0062;00E0 05AE 10D25 0315 0062;0061 05AE 0300 10D25 0315 0062;00E0 05AE 10D25 0315 0062;0061 05AE 0300 10D25 0315 0062; # (a◌̕◌̀◌֮◌𐴥b; à◌֮◌𐴥◌̕b; a◌֮◌̀◌𐴥◌̕b; à◌֮◌𐴥◌̕b; a◌֮◌̀◌𐴥◌̕b; ) LATIN SMALL LETTER A, COMBINING COMMA ABOVE RIGHT, COMBINING GRAVE ACCENT, HEBREW ACCENT ZINOR, HANIFI ROHINGYA SIGN TAHALA, LATIN SMALL LETTER B
+0061 10D25 0315 0300 05AE 0062;0061 05AE 10D25 0300 0315 0062;0061 05AE 10D25 0300 0315 0062;0061 05AE 10D25 0300 0315 0062;0061 05AE 10D25 0300 0315 0062; # (a◌𐴥◌̕◌̀◌֮b; a◌֮◌𐴥◌̀◌̕b; a◌֮◌𐴥◌̀◌̕b; a◌֮◌𐴥◌̀◌̕b; a◌֮◌𐴥◌̀◌̕b; ) LATIN SMALL LETTER A, HANIFI ROHINGYA SIGN TAHALA, COMBINING COMMA ABOVE RIGHT, COMBINING GRAVE ACCENT, HEBREW ACCENT ZINOR, LATIN SMALL LETTER B
+0061 0315 0300 05AE 10D26 0062;00E0 05AE 10D26 0315 0062;0061 05AE 0300 10D26 0315 0062;00E0 05AE 10D26 0315 0062;0061 05AE 0300 10D26 0315 0062; # (a◌̕◌̀◌֮◌𐴦b; à◌֮◌𐴦◌̕b; a◌֮◌̀◌𐴦◌̕b; à◌֮◌𐴦◌̕b; a◌֮◌̀◌𐴦◌̕b; ) LATIN SMALL LETTER A, COMBINING COMMA ABOVE RIGHT, COMBINING GRAVE ACCENT, HEBREW ACCENT ZINOR, HANIFI ROHINGYA SIGN TANA, LATIN SMALL LETTER B
+0061 10D26 0315 0300 05AE 0062;0061 05AE 10D26 0300 0315 0062;0061 05AE 10D26 0300 0315 0062;0061 05AE 10D26 0300 0315 0062;0061 05AE 10D26 0300 0315 0062; # (a◌𐴦◌̕◌̀◌֮b; a◌֮◌𐴦◌̀◌̕b; a◌֮◌𐴦◌̀◌̕b; a◌֮◌𐴦◌̀◌̕b; a◌֮◌𐴦◌̀◌̕b; ) LATIN SMALL LETTER A, HANIFI ROHINGYA SIGN TANA, COMBINING COMMA ABOVE RIGHT, COMBINING GRAVE ACCENT, HEBREW ACCENT ZINOR, LATIN SMALL LETTER B
+0061 0315 0300 05AE 10D27 0062;00E0 05AE 10D27 0315 0062;0061 05AE 0300 10D27 0315 0062;00E0 05AE 10D27 0315 0062;0061 05AE 0300 10D27 0315 0062; # (a◌̕◌̀◌֮◌𐴧b; à◌֮◌𐴧◌̕b; a◌֮◌̀◌𐴧◌̕b; à◌֮◌𐴧◌̕b; a◌֮◌̀◌𐴧◌̕b; ) LATIN SMALL LETTER A, COMBINING COMMA ABOVE RIGHT, COMBINING GRAVE ACCENT, HEBREW ACCENT ZINOR, HANIFI ROHINGYA SIGN TASSI, LATIN SMALL LETTER B
+0061 10D27 0315 0300 05AE 0062;0061 05AE 10D27 0300 0315 0062;0061 05AE 10D27 0300 0315 0062;0061 05AE 10D27 0300 0315 0062;0061 05AE 10D27 0300 0315 0062; # (a◌𐴧◌̕◌̀◌֮b; a◌֮◌𐴧◌̀◌̕b; a◌֮◌𐴧◌̀◌̕b; a◌֮◌𐴧◌̀◌̕b; a◌֮◌𐴧◌̀◌̕b; ) LATIN SMALL LETTER A, HANIFI ROHINGYA SIGN TASSI, COMBINING COMMA ABOVE RIGHT, COMBINING GRAVE ACCENT, HEBREW ACCENT ZINOR, LATIN SMALL LETTER B
+0061 059A 0316 302A 10F46 0062;0061 302A 0316 10F46 059A 0062;0061 302A 0316 10F46 059A 0062;0061 302A 0316 10F46 059A 0062;0061 302A 0316 10F46 059A 0062; # (a◌֚◌̖◌〪◌𐽆b; a◌〪◌̖◌𐽆◌֚b; a◌〪◌̖◌𐽆◌֚b; a◌〪◌̖◌𐽆◌֚b; a◌〪◌̖◌𐽆◌֚b; ) LATIN SMALL LETTER A, HEBREW ACCENT YETIV, COMBINING GRAVE ACCENT BELOW, IDEOGRAPHIC LEVEL TONE MARK, SOGDIAN COMBINING DOT BELOW, LATIN SMALL LETTER B
+0061 10F46 059A 0316 302A 0062;0061 302A 10F46 0316 059A 0062;0061 302A 10F46 0316 059A 0062;0061 302A 10F46 0316 059A 0062;0061 302A 10F46 0316 059A 0062; # (a◌𐽆◌֚◌̖◌〪b; a◌〪◌𐽆◌̖◌֚b; a◌〪◌𐽆◌̖◌֚b; a◌〪◌𐽆◌̖◌֚b; a◌〪◌𐽆◌̖◌֚b; ) LATIN SMALL LETTER A, SOGDIAN COMBINING DOT BELOW, HEBREW ACCENT YETIV, COMBINING GRAVE ACCENT BELOW, IDEOGRAPHIC LEVEL TONE MARK, LATIN SMALL LETTER B
+0061 059A 0316 302A 10F47 0062;0061 302A 0316 10F47 059A 0062;0061 302A 0316 10F47 059A 0062;0061 302A 0316 10F47 059A 0062;0061 302A 0316 10F47 059A 0062; # (a◌֚◌̖◌〪◌𐽇b; a◌〪◌̖◌𐽇◌֚b; a◌〪◌̖◌𐽇◌֚b; a◌〪◌̖◌𐽇◌֚b; a◌〪◌̖◌𐽇◌֚b; ) LATIN SMALL LETTER A, HEBREW ACCENT YETIV, COMBINING GRAVE ACCENT BELOW, IDEOGRAPHIC LEVEL TONE MARK, SOGDIAN COMBINING TWO DOTS BELOW, LATIN SMALL LETTER B
+0061 10F47 059A 0316 302A 0062;0061 302A 10F47 0316 059A 0062;0061 302A 10F47 0316 059A 0062;0061 302A 10F47 0316 059A 0062;0061 302A 10F47 0316 059A 0062; # (a◌𐽇◌֚◌̖◌〪b; a◌〪◌𐽇◌̖◌֚b; a◌〪◌𐽇◌̖◌֚b; a◌〪◌𐽇◌̖◌֚b; a◌〪◌𐽇◌̖◌֚b; ) LATIN SMALL LETTER A, SOGDIAN COMBINING TWO DOTS BELOW, HEBREW ACCENT YETIV, COMBINING GRAVE ACCENT BELOW, IDEOGRAPHIC LEVEL TONE MARK, LATIN SMALL LETTER B
+0061 0315 0300 05AE 10F48 0062;00E0 05AE 10F48 0315 0062;0061 05AE 0300 10F48 0315 0062;00E0 05AE 10F48 0315 0062;0061 05AE 0300 10F48 0315 0062; # (a◌̕◌̀◌֮◌𐽈b; à◌֮◌𐽈◌̕b; a◌֮◌̀◌𐽈◌̕b; à◌֮◌𐽈◌̕b; a◌֮◌̀◌𐽈◌̕b; ) LATIN SMALL LETTER A, COMBINING COMMA ABOVE RIGHT, COMBINING GRAVE ACCENT, HEBREW ACCENT ZINOR, SOGDIAN COMBINING DOT ABOVE, LATIN SMALL LETTER B
+0061 10F48 0315 0300 05AE 0062;0061 05AE 10F48 0300 0315 0062;0061 05AE 10F48 0300 0315 0062;0061 05AE 10F48 0300 0315 0062;0061 05AE 10F48 0300 0315 0062; # (a◌𐽈◌̕◌̀◌֮b; a◌֮◌𐽈◌̀◌̕b; a◌֮◌𐽈◌̀◌̕b; a◌֮◌𐽈◌̀◌̕b; a◌֮◌𐽈◌̀◌̕b; ) LATIN SMALL LETTER A, SOGDIAN COMBINING DOT ABOVE, COMBINING COMMA ABOVE RIGHT, COMBINING GRAVE ACCENT, HEBREW ACCENT ZINOR, LATIN SMALL LETTER B
+0061 0315 0300 05AE 10F49 0062;00E0 05AE 10F49 0315 0062;0061 05AE 0300 10F49 0315 0062;00E0 05AE 10F49 0315 0062;0061 05AE 0300 10F49 0315 0062; # (a◌̕◌̀◌֮◌𐽉b; à◌֮◌𐽉◌̕b; a◌֮◌̀◌𐽉◌̕b; à◌֮◌𐽉◌̕b; a◌֮◌̀◌𐽉◌̕b; ) LATIN SMALL LETTER A, COMBINING COMMA ABOVE RIGHT, COMBINING GRAVE ACCENT, HEBREW ACCENT ZINOR, SOGDIAN COMBINING TWO DOTS ABOVE, LATIN SMALL LETTER B
+0061 10F49 0315 0300 05AE 0062;0061 05AE 10F49 0300 0315 0062;0061 05AE 10F49 0300 0315 0062;0061 05AE 10F49 0300 0315 0062;0061 05AE 10F49 0300 0315 0062; # (a◌𐽉◌̕◌̀◌֮b; a◌֮◌𐽉◌̀◌̕b; a◌֮◌𐽉◌̀◌̕b; a◌֮◌𐽉◌̀◌̕b; a◌֮◌𐽉◌̀◌̕b; ) LATIN SMALL LETTER A, SOGDIAN COMBINING TWO DOTS ABOVE, COMBINING COMMA ABOVE RIGHT, COMBINING GRAVE ACCENT, HEBREW ACCENT ZINOR, LATIN SMALL LETTER B
+0061 0315 0300 05AE 10F4A 0062;00E0 05AE 10F4A 0315 0062;0061 05AE 0300 10F4A 0315 0062;00E0 05AE 10F4A 0315 0062;0061 05AE 0300 10F4A 0315 0062; # (a◌̕◌̀◌֮◌𐽊b; à◌֮◌𐽊◌̕b; a◌֮◌̀◌𐽊◌̕b; à◌֮◌𐽊◌̕b; a◌֮◌̀◌𐽊◌̕b; ) LATIN SMALL LETTER A, COMBINING COMMA ABOVE RIGHT, COMBINING GRAVE ACCENT, HEBREW ACCENT ZINOR, SOGDIAN COMBINING CURVE ABOVE, LATIN SMALL LETTER B
+0061 10F4A 0315 0300 05AE 0062;0061 05AE 10F4A 0300 0315 0062;0061 05AE 10F4A 0300 0315 0062;0061 05AE 10F4A 0300 0315 0062;0061 05AE 10F4A 0300 0315 0062; # (a◌𐽊◌̕◌̀◌֮b; a◌֮◌𐽊◌̀◌̕b; a◌֮◌𐽊◌̀◌̕b; a◌֮◌𐽊◌̀◌̕b; a◌֮◌𐽊◌̀◌̕b; ) LATIN SMALL LETTER A, SOGDIAN COMBINING CURVE ABOVE, COMBINING COMMA ABOVE RIGHT, COMBINING GRAVE ACCENT, HEBREW ACCENT ZINOR, LATIN SMALL LETTER B
+0061 059A 0316 302A 10F4B 0062;0061 302A 0316 10F4B 059A 0062;0061 302A 0316 10F4B 059A 0062;0061 302A 0316 10F4B 059A 0062;0061 302A 0316 10F4B 059A 0062; # (a◌֚◌̖◌〪◌𐽋b; a◌〪◌̖◌𐽋◌֚b; a◌〪◌̖◌𐽋◌֚b; a◌〪◌̖◌𐽋◌֚b; a◌〪◌̖◌𐽋◌֚b; ) LATIN SMALL LETTER A, HEBREW ACCENT YETIV, COMBINING GRAVE ACCENT BELOW, IDEOGRAPHIC LEVEL TONE MARK, SOGDIAN COMBINING CURVE BELOW, LATIN SMALL LETTER B
+0061 10F4B 059A 0316 302A 0062;0061 302A 10F4B 0316 059A 0062;0061 302A 10F4B 0316 059A 0062;0061 302A 10F4B 0316 059A 0062;0061 302A 10F4B 0316 059A 0062; # (a◌𐽋◌֚◌̖◌〪b; a◌〪◌𐽋◌̖◌֚b; a◌〪◌𐽋◌̖◌֚b; a◌〪◌𐽋◌̖◌֚b; a◌〪◌𐽋◌̖◌֚b; ) LATIN SMALL LETTER A, SOGDIAN COMBINING CURVE BELOW, HEBREW ACCENT YETIV, COMBINING GRAVE ACCENT BELOW, IDEOGRAPHIC LEVEL TONE MARK, LATIN SMALL LETTER B
+0061 0315 0300 05AE 10F4C 0062;00E0 05AE 10F4C 0315 0062;0061 05AE 0300 10F4C 0315 0062;00E0 05AE 10F4C 0315 0062;0061 05AE 0300 10F4C 0315 0062; # (a◌̕◌̀◌֮◌𐽌b; à◌֮◌𐽌◌̕b; a◌֮◌̀◌𐽌◌̕b; à◌֮◌𐽌◌̕b; a◌֮◌̀◌𐽌◌̕b; ) LATIN SMALL LETTER A, COMBINING COMMA ABOVE RIGHT, COMBINING GRAVE ACCENT, HEBREW ACCENT ZINOR, SOGDIAN COMBINING HOOK ABOVE, LATIN SMALL LETTER B
+0061 10F4C 0315 0300 05AE 0062;0061 05AE 10F4C 0300 0315 0062;0061 05AE 10F4C 0300 0315 0062;0061 05AE 10F4C 0300 0315 0062;0061 05AE 10F4C 0300 0315 0062; # (a◌𐽌◌̕◌̀◌֮b; a◌֮◌𐽌◌̀◌̕b; a◌֮◌𐽌◌̀◌̕b; a◌֮◌𐽌◌̀◌̕b; a◌֮◌𐽌◌̀◌̕b; ) LATIN SMALL LETTER A, SOGDIAN COMBINING HOOK ABOVE, COMBINING COMMA ABOVE RIGHT, COMBINING GRAVE ACCENT, HEBREW ACCENT ZINOR, LATIN SMALL LETTER B
+0061 059A 0316 302A 10F4D 0062;0061 302A 0316 10F4D 059A 0062;0061 302A 0316 10F4D 059A 0062;0061 302A 0316 10F4D 059A 0062;0061 302A 0316 10F4D 059A 0062; # (a◌֚◌̖◌〪◌𐽍b; a◌〪◌̖◌𐽍◌֚b; a◌〪◌̖◌𐽍◌֚b; a◌〪◌̖◌𐽍◌֚b; a◌〪◌̖◌𐽍◌֚b; ) LATIN SMALL LETTER A, HEBREW ACCENT YETIV, COMBINING GRAVE ACCENT BELOW, IDEOGRAPHIC LEVEL TONE MARK, SOGDIAN COMBINING HOOK BELOW, LATIN SMALL LETTER B
+0061 10F4D 059A 0316 302A 0062;0061 302A 10F4D 0316 059A 0062;0061 302A 10F4D 0316 059A 0062;0061 302A 10F4D 0316 059A 0062;0061 302A 10F4D 0316 059A 0062; # (a◌𐽍◌֚◌̖◌〪b; a◌〪◌𐽍◌̖◌֚b; a◌〪◌𐽍◌̖◌֚b; a◌〪◌𐽍◌̖◌֚b; a◌〪◌𐽍◌̖◌֚b; ) LATIN SMALL LETTER A, SOGDIAN COMBINING HOOK BELOW, HEBREW ACCENT YETIV, COMBINING GRAVE ACCENT BELOW, IDEOGRAPHIC LEVEL TONE MARK, LATIN SMALL LETTER B
+0061 059A 0316 302A 10F4E 0062;0061 302A 0316 10F4E 059A 0062;0061 302A 0316 10F4E 059A 0062;0061 302A 0316 10F4E 059A 0062;0061 302A 0316 10F4E 059A 0062; # (a◌֚◌̖◌〪◌𐽎b; a◌〪◌̖◌𐽎◌֚b; a◌〪◌̖◌𐽎◌֚b; a◌〪◌̖◌𐽎◌֚b; a◌〪◌̖◌𐽎◌֚b; ) LATIN SMALL LETTER A, HEBREW ACCENT YETIV, COMBINING GRAVE ACCENT BELOW, IDEOGRAPHIC LEVEL TONE MARK, SOGDIAN COMBINING LONG HOOK BELOW, LATIN SMALL LETTER B
+0061 10F4E 059A 0316 302A 0062;0061 302A 10F4E 0316 059A 0062;0061 302A 10F4E 0316 059A 0062;0061 302A 10F4E 0316 059A 0062;0061 302A 10F4E 0316 059A 0062; # (a◌𐽎◌֚◌̖◌〪b; a◌〪◌𐽎◌̖◌֚b; a◌〪◌𐽎◌̖◌֚b; a◌〪◌𐽎◌̖◌֚b; a◌〪◌𐽎◌̖◌֚b; ) LATIN SMALL LETTER A, SOGDIAN COMBINING LONG HOOK BELOW, HEBREW ACCENT YETIV, COMBINING GRAVE ACCENT BELOW, IDEOGRAPHIC LEVEL TONE MARK, LATIN SMALL LETTER B
+0061 059A 0316 302A 10F4F 0062;0061 302A 0316 10F4F 059A 0062;0061 302A 0316 10F4F 059A 0062;0061 302A 0316 10F4F 059A 0062;0061 302A 0316 10F4F 059A 0062; # (a◌֚◌̖◌〪◌𐽏b; a◌〪◌̖◌𐽏◌֚b; a◌〪◌̖◌𐽏◌֚b; a◌〪◌̖◌𐽏◌֚b; a◌〪◌̖◌𐽏◌֚b; ) LATIN SMALL LETTER A, HEBREW ACCENT YETIV, COMBINING GRAVE ACCENT BELOW, IDEOGRAPHIC LEVEL TONE MARK, SOGDIAN COMBINING RESH BELOW, LATIN SMALL LETTER B
+0061 10F4F 059A 0316 302A 0062;0061 302A 10F4F 0316 059A 0062;0061 302A 10F4F 0316 059A 0062;0061 302A 10F4F 0316 059A 0062;0061 302A 10F4F 0316 059A 0062; # (a◌𐽏◌֚◌̖◌〪b; a◌〪◌𐽏◌̖◌֚b; a◌〪◌𐽏◌̖◌֚b; a◌〪◌𐽏◌̖◌֚b; a◌〪◌𐽏◌̖◌֚b; ) LATIN SMALL LETTER A, SOGDIAN COMBINING RESH BELOW, HEBREW ACCENT YETIV, COMBINING GRAVE ACCENT BELOW, IDEOGRAPHIC LEVEL TONE MARK, LATIN SMALL LETTER B
+0061 059A 0316 302A 10F50 0062;0061 302A 0316 10F50 059A 0062;0061 302A 0316 10F50 059A 0062;0061 302A 0316 10F50 059A 0062;0061 302A 0316 10F50 059A 0062; # (a◌֚◌̖◌〪◌𐽐b; a◌〪◌̖◌𐽐◌֚b; a◌〪◌̖◌𐽐◌֚b; a◌〪◌̖◌𐽐◌֚b; a◌〪◌̖◌𐽐◌֚b; ) LATIN SMALL LETTER A, HEBREW ACCENT YETIV, COMBINING GRAVE ACCENT BELOW, IDEOGRAPHIC LEVEL TONE MARK, SOGDIAN COMBINING STROKE BELOW, LATIN SMALL LETTER B
+0061 10F50 059A 0316 302A 0062;0061 302A 10F50 0316 059A 0062;0061 302A 10F50 0316 059A 0062;0061 302A 10F50 0316 059A 0062;0061 302A 10F50 0316 059A 0062; # (a◌𐽐◌֚◌̖◌〪b; a◌〪◌𐽐◌̖◌֚b; a◌〪◌𐽐◌̖◌֚b; a◌〪◌𐽐◌̖◌֚b; a◌〪◌𐽐◌̖◌֚b; ) LATIN SMALL LETTER A, SOGDIAN COMBINING STROKE BELOW, HEBREW ACCENT YETIV, COMBINING GRAVE ACCENT BELOW, IDEOGRAPHIC LEVEL TONE MARK, LATIN SMALL LETTER B
 0061 05B0 094D 3099 11046 0062;0061 3099 094D 11046 05B0 0062;0061 3099 094D 11046 05B0 0062;0061 3099 094D 11046 05B0 0062;0061 3099 094D 11046 05B0 0062; # (a◌ְ◌्◌゙◌𑁆b; a◌゙◌्◌𑁆◌ְb; a◌゙◌्◌𑁆◌ְb; a◌゙◌्◌𑁆◌ְb; a◌゙◌्◌𑁆◌ְb; ) LATIN SMALL LETTER A, HEBREW POINT SHEVA, DEVANAGARI SIGN VIRAMA, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, BRAHMI VIRAMA, LATIN SMALL LETTER B
 0061 11046 05B0 094D 3099 0062;0061 3099 11046 094D 05B0 0062;0061 3099 11046 094D 05B0 0062;0061 3099 11046 094D 05B0 0062;0061 3099 11046 094D 05B0 0062; # (a◌𑁆◌ְ◌्◌゙b; a◌゙◌𑁆◌्◌ְb; a◌゙◌𑁆◌्◌ְb; a◌゙◌𑁆◌्◌ְb; a◌゙◌𑁆◌्◌ְb; ) LATIN SMALL LETTER A, BRAHMI VIRAMA, HEBREW POINT SHEVA, DEVANAGARI SIGN VIRAMA, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, LATIN SMALL LETTER B
 0061 05B0 094D 3099 1107F 0062;0061 3099 094D 1107F 05B0 0062;0061 3099 094D 1107F 05B0 0062;0061 3099 094D 1107F 05B0 0062;0061 3099 094D 1107F 05B0 0062; # (a◌ְ◌्◌゙◌𑁿b; a◌゙◌्◌𑁿◌ְb; a◌゙◌्◌𑁿◌ְb; a◌゙◌्◌𑁿◌ְb; a◌゙◌्◌𑁿◌ְb; ) LATIN SMALL LETTER A, HEBREW POINT SHEVA, DEVANAGARI SIGN VIRAMA, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, BRAHMI NUMBER JOINER, LATIN SMALL LETTER B
@@ -18361,6 +18397,8 @@ FFEE;FFEE;FFEE;25CB;25CB; # (￮; ￮; ￮; ○; ○; ) HALFWIDTH WHITE CIRCLE
 0061 112E9 3099 093C 0334 0062;0061 0334 112E9 093C 3099 0062;0061 0334 112E9 093C 3099 0062;0061 0334 112E9 093C 3099 0062;0061 0334 112E9 093C 3099 0062; # (a◌𑋩◌゙◌़◌̴b; a◌̴◌𑋩◌़◌゙b; a◌̴◌𑋩◌़◌゙b; a◌̴◌𑋩◌़◌゙b; a◌̴◌𑋩◌़◌゙b; ) LATIN SMALL LETTER A, KHUDAWADI SIGN NUKTA, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, DEVANAGARI SIGN NUKTA, COMBINING TILDE OVERLAY, LATIN SMALL LETTER B
 0061 05B0 094D 3099 112EA 0062;0061 3099 094D 112EA 05B0 0062;0061 3099 094D 112EA 05B0 0062;0061 3099 094D 112EA 05B0 0062;0061 3099 094D 112EA 05B0 0062; # (a◌ְ◌्◌゙◌𑋪b; a◌゙◌्◌𑋪◌ְb; a◌゙◌्◌𑋪◌ְb; a◌゙◌्◌𑋪◌ְb; a◌゙◌्◌𑋪◌ְb; ) LATIN SMALL LETTER A, HEBREW POINT SHEVA, DEVANAGARI SIGN VIRAMA, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, KHUDAWADI SIGN VIRAMA, LATIN SMALL LETTER B
 0061 112EA 05B0 094D 3099 0062;0061 3099 112EA 094D 05B0 0062;0061 3099 112EA 094D 05B0 0062;0061 3099 112EA 094D 05B0 0062;0061 3099 112EA 094D 05B0 0062; # (a◌𑋪◌ְ◌्◌゙b; a◌゙◌𑋪◌्◌ְb; a◌゙◌𑋪◌्◌ְb; a◌゙◌𑋪◌्◌ְb; a◌゙◌𑋪◌्◌ְb; ) LATIN SMALL LETTER A, KHUDAWADI SIGN VIRAMA, HEBREW POINT SHEVA, DEVANAGARI SIGN VIRAMA, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, LATIN SMALL LETTER B
+0061 3099 093C 0334 1133B 0062;0061 0334 093C 1133B 3099 0062;0061 0334 093C 1133B 3099 0062;0061 0334 093C 1133B 3099 0062;0061 0334 093C 1133B 3099 0062; # (a◌゙◌़◌̴◌𑌻b; a◌̴◌़◌𑌻◌゙b; a◌̴◌़◌𑌻◌゙b; a◌̴◌़◌𑌻◌゙b; a◌̴◌़◌𑌻◌゙b; ) LATIN SMALL LETTER A, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, DEVANAGARI SIGN NUKTA, COMBINING TILDE OVERLAY, COMBINING BINDU BELOW, LATIN SMALL LETTER B
+0061 1133B 3099 093C 0334 0062;0061 0334 1133B 093C 3099 0062;0061 0334 1133B 093C 3099 0062;0061 0334 1133B 093C 3099 0062;0061 0334 1133B 093C 3099 0062; # (a◌𑌻◌゙◌़◌̴b; a◌̴◌𑌻◌़◌゙b; a◌̴◌𑌻◌़◌゙b; a◌̴◌𑌻◌़◌゙b; a◌̴◌𑌻◌़◌゙b; ) LATIN SMALL LETTER A, COMBINING BINDU BELOW, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, DEVANAGARI SIGN NUKTA, COMBINING TILDE OVERLAY, LATIN SMALL LETTER B
 0061 3099 093C 0334 1133C 0062;0061 0334 093C 1133C 3099 0062;0061 0334 093C 1133C 3099 0062;0061 0334 093C 1133C 3099 0062;0061 0334 093C 1133C 3099 0062; # (a◌゙◌़◌̴◌𑌼b; a◌̴◌़◌𑌼◌゙b; a◌̴◌़◌𑌼◌゙b; a◌̴◌़◌𑌼◌゙b; a◌̴◌़◌𑌼◌゙b; ) LATIN SMALL LETTER A, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, DEVANAGARI SIGN NUKTA, COMBINING TILDE OVERLAY, GRANTHA SIGN NUKTA, LATIN SMALL LETTER B
 0061 1133C 3099 093C 0334 0062;0061 0334 1133C 093C 3099 0062;0061 0334 1133C 093C 3099 0062;0061 0334 1133C 093C 3099 0062;0061 0334 1133C 093C 3099 0062; # (a◌𑌼◌゙◌़◌̴b; a◌̴◌𑌼◌़◌゙b; a◌̴◌𑌼◌़◌゙b; a◌̴◌𑌼◌़◌゙b; a◌̴◌𑌼◌़◌゙b; ) LATIN SMALL LETTER A, GRANTHA SIGN NUKTA, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, DEVANAGARI SIGN NUKTA, COMBINING TILDE OVERLAY, LATIN SMALL LETTER B
 0061 05B0 094D 3099 1134D 0062;0061 3099 094D 1134D 05B0 0062;0061 3099 094D 1134D 05B0 0062;0061 3099 094D 1134D 05B0 0062;0061 3099 094D 1134D 05B0 0062; # (a◌ְ◌्◌゙𑍍b; a◌゙◌्𑍍◌ְb; a◌゙◌्𑍍◌ְb; a◌゙◌्𑍍◌ְb; a◌゙◌्𑍍◌ְb; ) LATIN SMALL LETTER A, HEBREW POINT SHEVA, DEVANAGARI SIGN VIRAMA, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, GRANTHA SIGN VIRAMA, LATIN SMALL LETTER B
@@ -18393,6 +18431,8 @@ FFEE;FFEE;FFEE;25CB;25CB; # (￮; ￮; ￮; ○; ○; ) HALFWIDTH WHITE CIRCLE
 0061 11442 05B0 094D 3099 0062;0061 3099 11442 094D 05B0 0062;0061 3099 11442 094D 05B0 0062;0061 3099 11442 094D 05B0 0062;0061 3099 11442 094D 05B0 0062; # (a◌𑑂◌ְ◌्◌゙b; a◌゙◌𑑂◌्◌ְb; a◌゙◌𑑂◌्◌ְb; a◌゙◌𑑂◌्◌ְb; a◌゙◌𑑂◌्◌ְb; ) LATIN SMALL LETTER A, NEWA SIGN VIRAMA, HEBREW POINT SHEVA, DEVANAGARI SIGN VIRAMA, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, LATIN SMALL LETTER B
 0061 3099 093C 0334 11446 0062;0061 0334 093C 11446 3099 0062;0061 0334 093C 11446 3099 0062;0061 0334 093C 11446 3099 0062;0061 0334 093C 11446 3099 0062; # (a◌゙◌़◌̴◌𑑆b; a◌̴◌़◌𑑆◌゙b; a◌̴◌़◌𑑆◌゙b; a◌̴◌़◌𑑆◌゙b; a◌̴◌़◌𑑆◌゙b; ) LATIN SMALL LETTER A, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, DEVANAGARI SIGN NUKTA, COMBINING TILDE OVERLAY, NEWA SIGN NUKTA, LATIN SMALL LETTER B
 0061 11446 3099 093C 0334 0062;0061 0334 11446 093C 3099 0062;0061 0334 11446 093C 3099 0062;0061 0334 11446 093C 3099 0062;0061 0334 11446 093C 3099 0062; # (a◌𑑆◌゙◌़◌̴b; a◌̴◌𑑆◌़◌゙b; a◌̴◌𑑆◌़◌゙b; a◌̴◌𑑆◌़◌゙b; a◌̴◌𑑆◌़◌゙b; ) LATIN SMALL LETTER A, NEWA SIGN NUKTA, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, DEVANAGARI SIGN NUKTA, COMBINING TILDE OVERLAY, LATIN SMALL LETTER B
+0061 0315 0300 05AE 1145E 0062;00E0 05AE 1145E 0315 0062;0061 05AE 0300 1145E 0315 0062;00E0 05AE 1145E 0315 0062;0061 05AE 0300 1145E 0315 0062; # (a◌̕◌̀◌֮◌𑑞b; à◌֮◌𑑞◌̕b; a◌֮◌̀◌𑑞◌̕b; à◌֮◌𑑞◌̕b; a◌֮◌̀◌𑑞◌̕b; ) LATIN SMALL LETTER A, COMBINING COMMA ABOVE RIGHT, COMBINING GRAVE ACCENT, HEBREW ACCENT ZINOR, NEWA SANDHI MARK, LATIN SMALL LETTER B
+0061 1145E 0315 0300 05AE 0062;0061 05AE 1145E 0300 0315 0062;0061 05AE 1145E 0300 0315 0062;0061 05AE 1145E 0300 0315 0062;0061 05AE 1145E 0300 0315 0062; # (a◌𑑞◌̕◌̀◌֮b; a◌֮◌𑑞◌̀◌̕b; a◌֮◌𑑞◌̀◌̕b; a◌֮◌𑑞◌̀◌̕b; a◌֮◌𑑞◌̀◌̕b; ) LATIN SMALL LETTER A, NEWA SANDHI MARK, COMBINING COMMA ABOVE RIGHT, COMBINING GRAVE ACCENT, HEBREW ACCENT ZINOR, LATIN SMALL LETTER B
 0061 05B0 094D 3099 114C2 0062;0061 3099 094D 114C2 05B0 0062;0061 3099 094D 114C2 05B0 0062;0061 3099 094D 114C2 05B0 0062;0061 3099 094D 114C2 05B0 0062; # (a◌ְ◌्◌゙◌𑓂b; a◌゙◌्◌𑓂◌ְb; a◌゙◌्◌𑓂◌ְb; a◌゙◌्◌𑓂◌ְb; a◌゙◌्◌𑓂◌ְb; ) LATIN SMALL LETTER A, HEBREW POINT SHEVA, DEVANAGARI SIGN VIRAMA, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, TIRHUTA SIGN VIRAMA, LATIN SMALL LETTER B
 0061 114C2 05B0 094D 3099 0062;0061 3099 114C2 094D 05B0 0062;0061 3099 114C2 094D 05B0 0062;0061 3099 114C2 094D 05B0 0062;0061 3099 114C2 094D 05B0 0062; # (a◌𑓂◌ְ◌्◌゙b; a◌゙◌𑓂◌्◌ְb; a◌゙◌𑓂◌्◌ְb; a◌゙◌𑓂◌्◌ְb; a◌゙◌𑓂◌्◌ְb; ) LATIN SMALL LETTER A, TIRHUTA SIGN VIRAMA, HEBREW POINT SHEVA, DEVANAGARI SIGN VIRAMA, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, LATIN SMALL LETTER B
 0061 3099 093C 0334 114C3 0062;0061 0334 093C 114C3 3099 0062;0061 0334 093C 114C3 3099 0062;0061 0334 093C 114C3 3099 0062;0061 0334 093C 114C3 3099 0062; # (a◌゙◌़◌̴◌𑓃b; a◌̴◌़◌𑓃◌゙b; a◌̴◌़◌𑓃◌゙b; a◌̴◌़◌𑓃◌゙b; a◌̴◌़◌𑓃◌゙b; ) LATIN SMALL LETTER A, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, DEVANAGARI SIGN NUKTA, COMBINING TILDE OVERLAY, TIRHUTA SIGN NUKTA, LATIN SMALL LETTER B
@@ -18409,6 +18449,10 @@ FFEE;FFEE;FFEE;25CB;25CB; # (￮; ￮; ￮; ○; ○; ) HALFWIDTH WHITE CIRCLE
 0061 116B7 3099 093C 0334 0062;0061 0334 116B7 093C 3099 0062;0061 0334 116B7 093C 3099 0062;0061 0334 116B7 093C 3099 0062;0061 0334 116B7 093C 3099 0062; # (a◌𑚷◌゙◌़◌̴b; a◌̴◌𑚷◌़◌゙b; a◌̴◌𑚷◌़◌゙b; a◌̴◌𑚷◌़◌゙b; a◌̴◌𑚷◌़◌゙b; ) LATIN SMALL LETTER A, TAKRI SIGN NUKTA, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, DEVANAGARI SIGN NUKTA, COMBINING TILDE OVERLAY, LATIN SMALL LETTER B
 0061 05B0 094D 3099 1172B 0062;0061 3099 094D 1172B 05B0 0062;0061 3099 094D 1172B 05B0 0062;0061 3099 094D 1172B 05B0 0062;0061 3099 094D 1172B 05B0 0062; # (a◌ְ◌्◌゙◌𑜫b; a◌゙◌्◌𑜫◌ְb; a◌゙◌्◌𑜫◌ְb; a◌゙◌्◌𑜫◌ְb; a◌゙◌्◌𑜫◌ְb; ) LATIN SMALL LETTER A, HEBREW POINT SHEVA, DEVANAGARI SIGN VIRAMA, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, AHOM SIGN KILLER, LATIN SMALL LETTER B
 0061 1172B 05B0 094D 3099 0062;0061 3099 1172B 094D 05B0 0062;0061 3099 1172B 094D 05B0 0062;0061 3099 1172B 094D 05B0 0062;0061 3099 1172B 094D 05B0 0062; # (a◌𑜫◌ְ◌्◌゙b; a◌゙◌𑜫◌्◌ְb; a◌゙◌𑜫◌्◌ְb; a◌゙◌𑜫◌्◌ְb; a◌゙◌𑜫◌्◌ְb; ) LATIN SMALL LETTER A, AHOM SIGN KILLER, HEBREW POINT SHEVA, DEVANAGARI SIGN VIRAMA, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, LATIN SMALL LETTER B
+0061 05B0 094D 3099 11839 0062;0061 3099 094D 11839 05B0 0062;0061 3099 094D 11839 05B0 0062;0061 3099 094D 11839 05B0 0062;0061 3099 094D 11839 05B0 0062; # (a◌ְ◌्◌゙◌𑠹b; a◌゙◌्◌𑠹◌ְb; a◌゙◌्◌𑠹◌ְb; a◌゙◌्◌𑠹◌ְb; a◌゙◌्◌𑠹◌ְb; ) LATIN SMALL LETTER A, HEBREW POINT SHEVA, DEVANAGARI SIGN VIRAMA, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, DOGRA SIGN VIRAMA, LATIN SMALL LETTER B
+0061 11839 05B0 094D 3099 0062;0061 3099 11839 094D 05B0 0062;0061 3099 11839 094D 05B0 0062;0061 3099 11839 094D 05B0 0062;0061 3099 11839 094D 05B0 0062; # (a◌𑠹◌ְ◌्◌゙b; a◌゙◌𑠹◌्◌ְb; a◌゙◌𑠹◌्◌ְb; a◌゙◌𑠹◌्◌ְb; a◌゙◌𑠹◌्◌ְb; ) LATIN SMALL LETTER A, DOGRA SIGN VIRAMA, HEBREW POINT SHEVA, DEVANAGARI SIGN VIRAMA, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, LATIN SMALL LETTER B
+0061 3099 093C 0334 1183A 0062;0061 0334 093C 1183A 3099 0062;0061 0334 093C 1183A 3099 0062;0061 0334 093C 1183A 3099 0062;0061 0334 093C 1183A 3099 0062; # (a◌゙◌़◌̴◌𑠺b; a◌̴◌़◌𑠺◌゙b; a◌̴◌़◌𑠺◌゙b; a◌̴◌़◌𑠺◌゙b; a◌̴◌़◌𑠺◌゙b; ) LATIN SMALL LETTER A, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, DEVANAGARI SIGN NUKTA, COMBINING TILDE OVERLAY, DOGRA SIGN NUKTA, LATIN SMALL LETTER B
+0061 1183A 3099 093C 0334 0062;0061 0334 1183A 093C 3099 0062;0061 0334 1183A 093C 3099 0062;0061 0334 1183A 093C 3099 0062;0061 0334 1183A 093C 3099 0062; # (a◌𑠺◌゙◌़◌̴b; a◌̴◌𑠺◌़◌゙b; a◌̴◌𑠺◌़◌゙b; a◌̴◌𑠺◌़◌゙b; a◌̴◌𑠺◌़◌゙b; ) LATIN SMALL LETTER A, DOGRA SIGN NUKTA, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, DEVANAGARI SIGN NUKTA, COMBINING TILDE OVERLAY, LATIN SMALL LETTER B
 0061 05B0 094D 3099 11A34 0062;0061 3099 094D 11A34 05B0 0062;0061 3099 094D 11A34 05B0 0062;0061 3099 094D 11A34 05B0 0062;0061 3099 094D 11A34 05B0 0062; # (a◌ְ◌्◌゙◌𑨴b; a◌゙◌्◌𑨴◌ְb; a◌゙◌्◌𑨴◌ְb; a◌゙◌्◌𑨴◌ְb; a◌゙◌्◌𑨴◌ְb; ) LATIN SMALL LETTER A, HEBREW POINT SHEVA, DEVANAGARI SIGN VIRAMA, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, ZANABAZAR SQUARE SIGN VIRAMA, LATIN SMALL LETTER B
 0061 11A34 05B0 094D 3099 0062;0061 3099 11A34 094D 05B0 0062;0061 3099 11A34 094D 05B0 0062;0061 3099 11A34 094D 05B0 0062;0061 3099 11A34 094D 05B0 0062; # (a◌𑨴◌ְ◌्◌゙b; a◌゙◌𑨴◌्◌ְb; a◌゙◌𑨴◌्◌ְb; a◌゙◌𑨴◌्◌ְb; a◌゙◌𑨴◌्◌ְb; ) LATIN SMALL LETTER A, ZANABAZAR SQUARE SIGN VIRAMA, HEBREW POINT SHEVA, DEVANAGARI SIGN VIRAMA, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, LATIN SMALL LETTER B
 0061 05B0 094D 3099 11A47 0062;0061 3099 094D 11A47 05B0 0062;0061 3099 094D 11A47 05B0 0062;0061 3099 094D 11A47 05B0 0062;0061 3099 094D 11A47 05B0 0062; # (a◌ְ◌्◌゙◌𑩇b; a◌゙◌्◌𑩇◌ְb; a◌゙◌्◌𑩇◌ְb; a◌゙◌्◌𑩇◌ְb; a◌゙◌्◌𑩇◌ְb; ) LATIN SMALL LETTER A, HEBREW POINT SHEVA, DEVANAGARI SIGN VIRAMA, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, ZANABAZAR SQUARE SUBJOINER, LATIN SMALL LETTER B
@@ -18423,6 +18467,8 @@ FFEE;FFEE;FFEE;25CB;25CB; # (￮; ￮; ￮; ○; ○; ) HALFWIDTH WHITE CIRCLE
 0061 11D44 05B0 094D 3099 0062;0061 3099 11D44 094D 05B0 0062;0061 3099 11D44 094D 05B0 0062;0061 3099 11D44 094D 05B0 0062;0061 3099 11D44 094D 05B0 0062; # (a◌𑵄◌ְ◌्◌゙b; a◌゙◌𑵄◌्◌ְb; a◌゙◌𑵄◌्◌ְb; a◌゙◌𑵄◌्◌ְb; a◌゙◌𑵄◌्◌ְb; ) LATIN SMALL LETTER A, MASARAM GONDI SIGN HALANTA, HEBREW POINT SHEVA, DEVANAGARI SIGN VIRAMA, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, LATIN SMALL LETTER B
 0061 05B0 094D 3099 11D45 0062;0061 3099 094D 11D45 05B0 0062;0061 3099 094D 11D45 05B0 0062;0061 3099 094D 11D45 05B0 0062;0061 3099 094D 11D45 05B0 0062; # (a◌ְ◌्◌゙◌𑵅b; a◌゙◌्◌𑵅◌ְb; a◌゙◌्◌𑵅◌ְb; a◌゙◌्◌𑵅◌ְb; a◌゙◌्◌𑵅◌ְb; ) LATIN SMALL LETTER A, HEBREW POINT SHEVA, DEVANAGARI SIGN VIRAMA, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, MASARAM GONDI VIRAMA, LATIN SMALL LETTER B
 0061 11D45 05B0 094D 3099 0062;0061 3099 11D45 094D 05B0 0062;0061 3099 11D45 094D 05B0 0062;0061 3099 11D45 094D 05B0 0062;0061 3099 11D45 094D 05B0 0062; # (a◌𑵅◌ְ◌्◌゙b; a◌゙◌𑵅◌्◌ְb; a◌゙◌𑵅◌्◌ְb; a◌゙◌𑵅◌्◌ְb; a◌゙◌𑵅◌्◌ְb; ) LATIN SMALL LETTER A, MASARAM GONDI VIRAMA, HEBREW POINT SHEVA, DEVANAGARI SIGN VIRAMA, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, LATIN SMALL LETTER B
+0061 05B0 094D 3099 11D97 0062;0061 3099 094D 11D97 05B0 0062;0061 3099 094D 11D97 05B0 0062;0061 3099 094D 11D97 05B0 0062;0061 3099 094D 11D97 05B0 0062; # (a◌ְ◌्◌゙◌𑶗b; a◌゙◌्◌𑶗◌ְb; a◌゙◌्◌𑶗◌ְb; a◌゙◌्◌𑶗◌ְb; a◌゙◌्◌𑶗◌ְb; ) LATIN SMALL LETTER A, HEBREW POINT SHEVA, DEVANAGARI SIGN VIRAMA, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, GUNJALA GONDI VIRAMA, LATIN SMALL LETTER B
+0061 11D97 05B0 094D 3099 0062;0061 3099 11D97 094D 05B0 0062;0061 3099 11D97 094D 05B0 0062;0061 3099 11D97 094D 05B0 0062;0061 3099 11D97 094D 05B0 0062; # (a◌𑶗◌ְ◌्◌゙b; a◌゙◌𑶗◌्◌ְb; a◌゙◌𑶗◌्◌ְb; a◌゙◌𑶗◌्◌ְb; a◌゙◌𑶗◌्◌ְb; ) LATIN SMALL LETTER A, GUNJALA GONDI VIRAMA, HEBREW POINT SHEVA, DEVANAGARI SIGN VIRAMA, COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK, LATIN SMALL LETTER B
 0061 093C 0334 16AF0 0062;0061 0334 16AF0 093C 0062;0061 0334 16AF0 093C 0062;0061 0334 16AF0 093C 0062;0061 0334 16AF0 093C 0062; # (a◌़◌̴◌𖫰b; a◌̴◌𖫰◌़b; a◌̴◌𖫰◌़b; a◌̴◌𖫰◌़b; a◌̴◌𖫰◌़b; ) LATIN SMALL LETTER A, DEVANAGARI SIGN NUKTA, COMBINING TILDE OVERLAY, BASSA VAH COMBINING HIGH TONE, LATIN SMALL LETTER B
 0061 16AF0 093C 0334 0062;0061 16AF0 0334 093C 0062;0061 16AF0 0334 093C 0062;0061 16AF0 0334 093C 0062;0061 16AF0 0334 093C 0062; # (a◌𖫰◌़◌̴b; a◌𖫰◌̴◌़b; a◌𖫰◌̴◌़b; a◌𖫰◌̴◌़b; a◌𖫰◌̴◌़b; ) LATIN SMALL LETTER A, BASSA VAH COMBINING HIGH TONE, DEVANAGARI SIGN NUKTA, COMBINING TILDE OVERLAY, LATIN SMALL LETTER B
 0061 093C 0334 16AF1 0062;0061 0334 16AF1 093C 0062;0061 0334 16AF1 093C 0062;0061 0334 16AF1 093C 0062;0061 0334 16AF1 093C 0062; # (a◌़◌̴◌𖫱b; a◌̴◌𖫱◌़b; a◌̴◌𖫱◌़b; a◌̴◌𖫱◌़b; a◌̴◌𖫱◌़b; ) LATIN SMALL LETTER A, DEVANAGARI SIGN NUKTA, COMBINING TILDE OVERLAY, BASSA VAH COMBINING LOW TONE, LATIN SMALL LETTER B
diff --git a/lib/stdlib/test/uri_string_SUITE.erl b/lib/stdlib/test/uri_string_SUITE.erl
index 4fc0d76be8..ddaead9c7c 100644
--- a/lib/stdlib/test/uri_string_SUITE.erl
+++ b/lib/stdlib/test/uri_string_SUITE.erl
@@ -862,9 +862,11 @@ transcode_negative(_Config) ->
 compose_query(_Config) ->
     [] = uri_string:compose_query([]),
     "foo=1&bar=2" = uri_string:compose_query([{<<"foo">>,"1"}, {"bar", "2"}]),
+    "foo=1&bar" = uri_string:compose_query([{<<"foo">>,"1"}, {"bar", true}]),
     "foo=1&b%C3%A4r=2" = uri_string:compose_query([{"foo","1"}, {"bär", "2"}],[{encoding,utf8}]),
     "foo=1&b%C3%A4r=2" = uri_string:compose_query([{"foo","1"}, {"bär", "2"}],[{encoding,unicode}]),
     "foo=1&b%E4r=2" = uri_string:compose_query([{"foo","1"}, {"bär", "2"}],[{encoding,latin1}]),
+    "foo&b%E4r=2" = uri_string:compose_query([{"foo",true}, {"bär", "2"}],[{encoding,latin1}]),
     "foo+bar=1&%E5%90%88=2" = uri_string:compose_query([{"foo bar","1"}, {"合", "2"}]),
     "foo+bar=1&%26%2321512%3B=2" =
         uri_string:compose_query([{"foo bar","1"}, {"合", "2"}],[{encoding,latin1}]),
@@ -906,11 +908,13 @@ dissect_query(_Config) ->
     [{"föo bar","1"},{"ö","2"}] =
         uri_string:dissect_query("föo+bar=1&%C3%B6=2"),
     [{<<"föo bar"/utf8>>,<<"1">>},{<<"ö"/utf8>>,<<"2">>}] =
-        uri_string:dissect_query(<<"föo+bar=1&%C3%B6=2"/utf8>>).
+        uri_string:dissect_query(<<"föo+bar=1&%C3%B6=2"/utf8>>),
+    [{"foo1",true},{"bar","2"}] =
+        uri_string:dissect_query("foo1&bar=2"),
+    [{<<"foo1">>,<<"1">>},{<<"bar">>,true}] =
+        uri_string:dissect_query(<<"foo1=1&bar">>).
 
 dissect_query_negative(_Config) ->
-    {error,missing_value,"&"} =
-        uri_string:dissect_query("foo1&bar=2"),
     {error,invalid_percent_encoding,"%XX%B6"} = uri_string:dissect_query("foo=%XX%B6&amp;bar=2"),
     {error,invalid_input,[153]} =
         uri_string:dissect_query("foo=%99%B6&amp;bar=2"),
diff --git a/lib/stdlib/uc_spec/CaseFolding.txt b/lib/stdlib/uc_spec/CaseFolding.txt
index efdf18e441..cce350f49c 100644
--- a/lib/stdlib/uc_spec/CaseFolding.txt
+++ b/lib/stdlib/uc_spec/CaseFolding.txt
@@ -1,6 +1,6 @@
-# CaseFolding-10.0.0.txt
-# Date: 2017-04-14, 05:40:18 GMT
-# © 2017 Unicode®, Inc.
+# CaseFolding-11.0.0.txt
+# Date: 2018-01-31, 08:20:09 GMT
+# © 2018 Unicode®, Inc.
 # Unicode and the Unicode Logo are registered trademarks of Unicode, Inc. in the U.S. and other countries.
 # For terms of use, see http://www.unicode.org/terms_of_use.html
 #
@@ -603,6 +603,52 @@
 1C86; C; 044A; # CYRILLIC SMALL LETTER TALL HARD SIGN
 1C87; C; 0463; # CYRILLIC SMALL LETTER TALL YAT
 1C88; C; A64B; # CYRILLIC SMALL LETTER UNBLENDED UK
+1C90; C; 10D0; # GEORGIAN MTAVRULI CAPITAL LETTER AN
+1C91; C; 10D1; # GEORGIAN MTAVRULI CAPITAL LETTER BAN
+1C92; C; 10D2; # GEORGIAN MTAVRULI CAPITAL LETTER GAN
+1C93; C; 10D3; # GEORGIAN MTAVRULI CAPITAL LETTER DON
+1C94; C; 10D4; # GEORGIAN MTAVRULI CAPITAL LETTER EN
+1C95; C; 10D5; # GEORGIAN MTAVRULI CAPITAL LETTER VIN
+1C96; C; 10D6; # GEORGIAN MTAVRULI CAPITAL LETTER ZEN
+1C97; C; 10D7; # GEORGIAN MTAVRULI CAPITAL LETTER TAN
+1C98; C; 10D8; # GEORGIAN MTAVRULI CAPITAL LETTER IN
+1C99; C; 10D9; # GEORGIAN MTAVRULI CAPITAL LETTER KAN
+1C9A; C; 10DA; # GEORGIAN MTAVRULI CAPITAL LETTER LAS
+1C9B; C; 10DB; # GEORGIAN MTAVRULI CAPITAL LETTER MAN
+1C9C; C; 10DC; # GEORGIAN MTAVRULI CAPITAL LETTER NAR
+1C9D; C; 10DD; # GEORGIAN MTAVRULI CAPITAL LETTER ON
+1C9E; C; 10DE; # GEORGIAN MTAVRULI CAPITAL LETTER PAR
+1C9F; C; 10DF; # GEORGIAN MTAVRULI CAPITAL LETTER ZHAR
+1CA0; C; 10E0; # GEORGIAN MTAVRULI CAPITAL LETTER RAE
+1CA1; C; 10E1; # GEORGIAN MTAVRULI CAPITAL LETTER SAN
+1CA2; C; 10E2; # GEORGIAN MTAVRULI CAPITAL LETTER TAR
+1CA3; C; 10E3; # GEORGIAN MTAVRULI CAPITAL LETTER UN
+1CA4; C; 10E4; # GEORGIAN MTAVRULI CAPITAL LETTER PHAR
+1CA5; C; 10E5; # GEORGIAN MTAVRULI CAPITAL LETTER KHAR
+1CA6; C; 10E6; # GEORGIAN MTAVRULI CAPITAL LETTER GHAN
+1CA7; C; 10E7; # GEORGIAN MTAVRULI CAPITAL LETTER QAR
+1CA8; C; 10E8; # GEORGIAN MTAVRULI CAPITAL LETTER SHIN
+1CA9; C; 10E9; # GEORGIAN MTAVRULI CAPITAL LETTER CHIN
+1CAA; C; 10EA; # GEORGIAN MTAVRULI CAPITAL LETTER CAN
+1CAB; C; 10EB; # GEORGIAN MTAVRULI CAPITAL LETTER JIL
+1CAC; C; 10EC; # GEORGIAN MTAVRULI CAPITAL LETTER CIL
+1CAD; C; 10ED; # GEORGIAN MTAVRULI CAPITAL LETTER CHAR
+1CAE; C; 10EE; # GEORGIAN MTAVRULI CAPITAL LETTER XAN
+1CAF; C; 10EF; # GEORGIAN MTAVRULI CAPITAL LETTER JHAN
+1CB0; C; 10F0; # GEORGIAN MTAVRULI CAPITAL LETTER HAE
+1CB1; C; 10F1; # GEORGIAN MTAVRULI CAPITAL LETTER HE
+1CB2; C; 10F2; # GEORGIAN MTAVRULI CAPITAL LETTER HIE
+1CB3; C; 10F3; # GEORGIAN MTAVRULI CAPITAL LETTER WE
+1CB4; C; 10F4; # GEORGIAN MTAVRULI CAPITAL LETTER HAR
+1CB5; C; 10F5; # GEORGIAN MTAVRULI CAPITAL LETTER HOE
+1CB6; C; 10F6; # GEORGIAN MTAVRULI CAPITAL LETTER FI
+1CB7; C; 10F7; # GEORGIAN MTAVRULI CAPITAL LETTER YN
+1CB8; C; 10F8; # GEORGIAN MTAVRULI CAPITAL LETTER ELIFI
+1CB9; C; 10F9; # GEORGIAN MTAVRULI CAPITAL LETTER TURNED GAN
+1CBA; C; 10FA; # GEORGIAN MTAVRULI CAPITAL LETTER AIN
+1CBD; C; 10FD; # GEORGIAN MTAVRULI CAPITAL LETTER AEN
+1CBE; C; 10FE; # GEORGIAN MTAVRULI CAPITAL LETTER HARD SIGN
+1CBF; C; 10FF; # GEORGIAN MTAVRULI CAPITAL LETTER LABIAL SIGN
 1E00; C; 1E01; # LATIN CAPITAL LETTER A WITH RING BELOW
 1E02; C; 1E03; # LATIN CAPITAL LETTER B WITH DOT ABOVE
 1E04; C; 1E05; # LATIN CAPITAL LETTER B WITH DOT BELOW
@@ -1180,6 +1226,7 @@ A7B2; C; 029D; # LATIN CAPITAL LETTER J WITH CROSSED-TAIL
 A7B3; C; AB53; # LATIN CAPITAL LETTER CHI
 A7B4; C; A7B5; # LATIN CAPITAL LETTER BETA
 A7B6; C; A7B7; # LATIN CAPITAL LETTER OMEGA
+A7B8; C; A7B9; # LATIN CAPITAL LETTER U WITH STROKE
 AB70; C; 13A0; # CHEROKEE SMALL LETTER A
 AB71; C; 13A1; # CHEROKEE SMALL LETTER E
 AB72; C; 13A2; # CHEROKEE SMALL LETTER I
@@ -1457,6 +1504,38 @@ FF3A; C; FF5A; # FULLWIDTH LATIN CAPITAL LETTER Z
 118BD; C; 118DD; # WARANG CITI CAPITAL LETTER SSUU
 118BE; C; 118DE; # WARANG CITI CAPITAL LETTER SII
 118BF; C; 118DF; # WARANG CITI CAPITAL LETTER VIYO
+16E40; C; 16E60; # MEDEFAIDRIN CAPITAL LETTER M
+16E41; C; 16E61; # MEDEFAIDRIN CAPITAL LETTER S
+16E42; C; 16E62; # MEDEFAIDRIN CAPITAL LETTER V
+16E43; C; 16E63; # MEDEFAIDRIN CAPITAL LETTER W
+16E44; C; 16E64; # MEDEFAIDRIN CAPITAL LETTER ATIU
+16E45; C; 16E65; # MEDEFAIDRIN CAPITAL LETTER Z
+16E46; C; 16E66; # MEDEFAIDRIN CAPITAL LETTER KP
+16E47; C; 16E67; # MEDEFAIDRIN CAPITAL LETTER P
+16E48; C; 16E68; # MEDEFAIDRIN CAPITAL LETTER T
+16E49; C; 16E69; # MEDEFAIDRIN CAPITAL LETTER G
+16E4A; C; 16E6A; # MEDEFAIDRIN CAPITAL LETTER F
+16E4B; C; 16E6B; # MEDEFAIDRIN CAPITAL LETTER I
+16E4C; C; 16E6C; # MEDEFAIDRIN CAPITAL LETTER K
+16E4D; C; 16E6D; # MEDEFAIDRIN CAPITAL LETTER A
+16E4E; C; 16E6E; # MEDEFAIDRIN CAPITAL LETTER J
+16E4F; C; 16E6F; # MEDEFAIDRIN CAPITAL LETTER E
+16E50; C; 16E70; # MEDEFAIDRIN CAPITAL LETTER B
+16E51; C; 16E71; # MEDEFAIDRIN CAPITAL LETTER C
+16E52; C; 16E72; # MEDEFAIDRIN CAPITAL LETTER U
+16E53; C; 16E73; # MEDEFAIDRIN CAPITAL LETTER YU
+16E54; C; 16E74; # MEDEFAIDRIN CAPITAL LETTER L
+16E55; C; 16E75; # MEDEFAIDRIN CAPITAL LETTER Q
+16E56; C; 16E76; # MEDEFAIDRIN CAPITAL LETTER HP
+16E57; C; 16E77; # MEDEFAIDRIN CAPITAL LETTER NY
+16E58; C; 16E78; # MEDEFAIDRIN CAPITAL LETTER X
+16E59; C; 16E79; # MEDEFAIDRIN CAPITAL LETTER D
+16E5A; C; 16E7A; # MEDEFAIDRIN CAPITAL LETTER OE
+16E5B; C; 16E7B; # MEDEFAIDRIN CAPITAL LETTER N
+16E5C; C; 16E7C; # MEDEFAIDRIN CAPITAL LETTER R
+16E5D; C; 16E7D; # MEDEFAIDRIN CAPITAL LETTER O
+16E5E; C; 16E7E; # MEDEFAIDRIN CAPITAL LETTER AI
+16E5F; C; 16E7F; # MEDEFAIDRIN CAPITAL LETTER Y
 1E900; C; 1E922; # ADLAM CAPITAL LETTER ALIF
 1E901; C; 1E923; # ADLAM CAPITAL LETTER DAALI
 1E902; C; 1E924; # ADLAM CAPITAL LETTER LAAM
diff --git a/lib/stdlib/uc_spec/CompositionExclusions.txt b/lib/stdlib/uc_spec/CompositionExclusions.txt
index ff42508686..ea63595bd3 100644
--- a/lib/stdlib/uc_spec/CompositionExclusions.txt
+++ b/lib/stdlib/uc_spec/CompositionExclusions.txt
@@ -1,5 +1,5 @@
-# CompositionExclusions-10.0.0.txt
-# Date: 2017-02-15, 00:00:00 GMT [KW, LI]
+# CompositionExclusions-11.0.0.txt
+# Date: 2017-12-06, 00:00:00 GMT [KW, LI]
 # © 2017 Unicode®, Inc.
 # For terms of use, see http://www.unicode.org/terms_of_use.html
 #
diff --git a/lib/stdlib/uc_spec/GraphemeBreakProperty.txt b/lib/stdlib/uc_spec/GraphemeBreakProperty.txt
index 32bb12e47e..52052e6e33 100644
--- a/lib/stdlib/uc_spec/GraphemeBreakProperty.txt
+++ b/lib/stdlib/uc_spec/GraphemeBreakProperty.txt
@@ -1,6 +1,6 @@
-# GraphemeBreakProperty-10.0.0.txt
-# Date: 2017-03-12, 07:03:41 GMT
-# © 2017 Unicode®, Inc.
+# GraphemeBreakProperty-11.0.0.txt
+# Date: 2018-03-16, 20:34:02 GMT
+# © 2018 Unicode®, Inc.
 # Unicode and the Unicode Logo are registered trademarks of Unicode, Inc. in the U.S. and other countries.
 # For terms of use, see http://www.unicode.org/terms_of_use.html
 #
@@ -24,12 +24,13 @@
 08E2          ; Prepend # Cf       ARABIC DISPUTED END OF AYAH
 0D4E          ; Prepend # Lo       MALAYALAM LETTER DOT REPH
 110BD         ; Prepend # Cf       KAITHI NUMBER SIGN
+110CD         ; Prepend # Cf       KAITHI NUMBER SIGN ABOVE
 111C2..111C3  ; Prepend # Lo   [2] SHARADA SIGN JIHVAMULIYA..SHARADA SIGN UPADHMANIYA
 11A3A         ; Prepend # Lo       ZANABAZAR SQUARE CLUSTER-INITIAL LETTER RA
 11A86..11A89  ; Prepend # Lo   [4] SOYOMBO CLUSTER-INITIAL LETTER RA..SOYOMBO CLUSTER-INITIAL LETTER SA
 11D46         ; Prepend # Lo       MASARAM GONDI REPHA
 
-# Total code points: 19
+# Total code points: 20
 
 # ================================================
 
@@ -95,12 +96,13 @@ E01F0..E0FFF  ; Control # Cn [3600] <reserved-E01F0>..<reserved-E0FFF>
 0730..074A    ; Extend # Mn  [27] SYRIAC PTHAHA ABOVE..SYRIAC BARREKH
 07A6..07B0    ; Extend # Mn  [11] THAANA ABAFILI..THAANA SUKUN
 07EB..07F3    ; Extend # Mn   [9] NKO COMBINING SHORT HIGH TONE..NKO COMBINING DOUBLE DOT ABOVE
+07FD          ; Extend # Mn       NKO DANTAYALAN
 0816..0819    ; Extend # Mn   [4] SAMARITAN MARK IN..SAMARITAN MARK DAGESH
 081B..0823    ; Extend # Mn   [9] SAMARITAN MARK EPENTHETIC YUT..SAMARITAN VOWEL SIGN A
 0825..0827    ; Extend # Mn   [3] SAMARITAN VOWEL SIGN SHORT A..SAMARITAN VOWEL SIGN U
 0829..082D    ; Extend # Mn   [5] SAMARITAN VOWEL SIGN LONG I..SAMARITAN MARK NEQUDAA
 0859..085B    ; Extend # Mn   [3] MANDAIC AFFRICATION MARK..MANDAIC GEMINATION MARK
-08D4..08E1    ; Extend # Mn  [14] ARABIC SMALL HIGH WORD AR-RUB..ARABIC SMALL HIGH SIGN SAFHA
+08D3..08E1    ; Extend # Mn  [15] ARABIC SMALL LOW WAW..ARABIC SMALL HIGH SIGN SAFHA
 08E3..0902    ; Extend # Mn  [32] ARABIC TURNED DAMMA BELOW..DEVANAGARI SIGN ANUSVARA
 093A          ; Extend # Mn       DEVANAGARI VOWEL SIGN OE
 093C          ; Extend # Mn       DEVANAGARI SIGN NUKTA
@@ -115,6 +117,7 @@ E01F0..E0FFF  ; Control # Cn [3600] <reserved-E01F0>..<reserved-E0FFF>
 09CD          ; Extend # Mn       BENGALI SIGN VIRAMA
 09D7          ; Extend # Mc       BENGALI AU LENGTH MARK
 09E2..09E3    ; Extend # Mn   [2] BENGALI VOWEL SIGN VOCALIC L..BENGALI VOWEL SIGN VOCALIC LL
+09FE          ; Extend # Mn       BENGALI SANDHI MARK
 0A01..0A02    ; Extend # Mn   [2] GURMUKHI SIGN ADAK BINDI..GURMUKHI SIGN BINDI
 0A3C          ; Extend # Mn       GURMUKHI SIGN NUKTA
 0A41..0A42    ; Extend # Mn   [2] GURMUKHI VOWEL SIGN U..GURMUKHI VOWEL SIGN UU
@@ -145,6 +148,7 @@ E01F0..E0FFF  ; Control # Cn [3600] <reserved-E01F0>..<reserved-E0FFF>
 0BCD          ; Extend # Mn       TAMIL SIGN VIRAMA
 0BD7          ; Extend # Mc       TAMIL AU LENGTH MARK
 0C00          ; Extend # Mn       TELUGU SIGN COMBINING CANDRABINDU ABOVE
+0C04          ; Extend # Mn       TELUGU SIGN COMBINING ANUSVARA ABOVE
 0C3E..0C40    ; Extend # Mn   [3] TELUGU VOWEL SIGN AA..TELUGU VOWEL SIGN II
 0C46..0C48    ; Extend # Mn   [3] TELUGU VOWEL SIGN E..TELUGU VOWEL SIGN AI
 0C4A..0C4D    ; Extend # Mn   [4] TELUGU VOWEL SIGN O..TELUGU SIGN VIRAMA
@@ -273,6 +277,7 @@ A80B          ; Extend # Mn       SYLOTI NAGRI SIGN ANUSVARA
 A825..A826    ; Extend # Mn   [2] SYLOTI NAGRI VOWEL SIGN U..SYLOTI NAGRI VOWEL SIGN E
 A8C4..A8C5    ; Extend # Mn   [2] SAURASHTRA SIGN VIRAMA..SAURASHTRA SIGN CANDRABINDU
 A8E0..A8F1    ; Extend # Mn  [18] COMBINING DEVANAGARI DIGIT ZERO..COMBINING DEVANAGARI SIGN AVAGRAHA
+A8FF          ; Extend # Mn       DEVANAGARI VOWEL SIGN AY
 A926..A92D    ; Extend # Mn   [8] KAYAH LI VOWEL UE..KAYAH LI TONE CALYA PLOPHU
 A947..A951    ; Extend # Mn  [11] REJANG VOWEL SIGN I..REJANG CONSONANT SIGN R
 A980..A982    ; Extend # Mn   [3] JAVANESE SIGN PANYANGGA..JAVANESE SIGN LAYAR
@@ -309,6 +314,8 @@ FF9E..FF9F    ; Extend # Lm   [2] HALFWIDTH KATAKANA VOICED SOUND MARK..HALFWIDT
 10A38..10A3A  ; Extend # Mn   [3] KHAROSHTHI SIGN BAR ABOVE..KHAROSHTHI SIGN DOT BELOW
 10A3F         ; Extend # Mn       KHAROSHTHI VIRAMA
 10AE5..10AE6  ; Extend # Mn   [2] MANICHAEAN ABBREVIATION MARK ABOVE..MANICHAEAN ABBREVIATION MARK BELOW
+10D24..10D27  ; Extend # Mn   [4] HANIFI ROHINGYA SIGN HARBAHAY..HANIFI ROHINGYA SIGN TASSI
+10F46..10F50  ; Extend # Mn  [11] SOGDIAN COMBINING DOT BELOW..SOGDIAN COMBINING STROKE BELOW
 11001         ; Extend # Mn       BRAHMI SIGN ANUSVARA
 11038..11046  ; Extend # Mn  [15] BRAHMI VOWEL SIGN AA..BRAHMI VIRAMA
 1107F..11081  ; Extend # Mn   [3] BRAHMI NUMBER JOINER..KAITHI SIGN ANUSVARA
@@ -320,7 +327,7 @@ FF9E..FF9F    ; Extend # Lm   [2] HALFWIDTH KATAKANA VOICED SOUND MARK..HALFWIDT
 11173         ; Extend # Mn       MAHAJANI SIGN NUKTA
 11180..11181  ; Extend # Mn   [2] SHARADA SIGN CANDRABINDU..SHARADA SIGN ANUSVARA
 111B6..111BE  ; Extend # Mn   [9] SHARADA VOWEL SIGN U..SHARADA VOWEL SIGN O
-111CA..111CC  ; Extend # Mn   [3] SHARADA SIGN NUKTA..SHARADA EXTRA SHORT VOWEL MARK
+111C9..111CC  ; Extend # Mn   [4] SHARADA SANDHI MARK..SHARADA EXTRA SHORT VOWEL MARK
 1122F..11231  ; Extend # Mn   [3] KHOJKI VOWEL SIGN U..KHOJKI VOWEL SIGN AI
 11234         ; Extend # Mn       KHOJKI SIGN ANUSVARA
 11236..11237  ; Extend # Mn   [2] KHOJKI SIGN NUKTA..KHOJKI SIGN SHADDA
@@ -328,7 +335,7 @@ FF9E..FF9F    ; Extend # Lm   [2] HALFWIDTH KATAKANA VOICED SOUND MARK..HALFWIDT
 112DF         ; Extend # Mn       KHUDAWADI SIGN ANUSVARA
 112E3..112EA  ; Extend # Mn   [8] KHUDAWADI VOWEL SIGN U..KHUDAWADI SIGN VIRAMA
 11300..11301  ; Extend # Mn   [2] GRANTHA SIGN COMBINING ANUSVARA ABOVE..GRANTHA SIGN CANDRABINDU
-1133C         ; Extend # Mn       GRANTHA SIGN NUKTA
+1133B..1133C  ; Extend # Mn   [2] COMBINING BINDU BELOW..GRANTHA SIGN NUKTA
 1133E         ; Extend # Mc       GRANTHA VOWEL SIGN AA
 11340         ; Extend # Mn       GRANTHA VOWEL SIGN II
 11357         ; Extend # Mc       GRANTHA AU LENGTH MARK
@@ -337,6 +344,7 @@ FF9E..FF9F    ; Extend # Lm   [2] HALFWIDTH KATAKANA VOICED SOUND MARK..HALFWIDT
 11438..1143F  ; Extend # Mn   [8] NEWA VOWEL SIGN U..NEWA VOWEL SIGN AI
 11442..11444  ; Extend # Mn   [3] NEWA SIGN VIRAMA..NEWA SIGN ANUSVARA
 11446         ; Extend # Mn       NEWA SIGN NUKTA
+1145E         ; Extend # Mn       NEWA SANDHI MARK
 114B0         ; Extend # Mc       TIRHUTA VOWEL SIGN AA
 114B3..114B8  ; Extend # Mn   [6] TIRHUTA VOWEL SIGN U..TIRHUTA VOWEL SIGN VOCALIC LL
 114BA         ; Extend # Mn       TIRHUTA VOWEL SIGN SHORT E
@@ -358,8 +366,9 @@ FF9E..FF9F    ; Extend # Lm   [2] HALFWIDTH KATAKANA VOICED SOUND MARK..HALFWIDT
 1171D..1171F  ; Extend # Mn   [3] AHOM CONSONANT SIGN MEDIAL LA..AHOM CONSONANT SIGN MEDIAL LIGATING RA
 11722..11725  ; Extend # Mn   [4] AHOM VOWEL SIGN I..AHOM VOWEL SIGN UU
 11727..1172B  ; Extend # Mn   [5] AHOM VOWEL SIGN AW..AHOM SIGN KILLER
-11A01..11A06  ; Extend # Mn   [6] ZANABAZAR SQUARE VOWEL SIGN I..ZANABAZAR SQUARE VOWEL SIGN O
-11A09..11A0A  ; Extend # Mn   [2] ZANABAZAR SQUARE VOWEL SIGN REVERSED I..ZANABAZAR SQUARE VOWEL LENGTH MARK
+1182F..11837  ; Extend # Mn   [9] DOGRA VOWEL SIGN U..DOGRA SIGN ANUSVARA
+11839..1183A  ; Extend # Mn   [2] DOGRA SIGN VIRAMA..DOGRA SIGN NUKTA
+11A01..11A0A  ; Extend # Mn  [10] ZANABAZAR SQUARE VOWEL SIGN I..ZANABAZAR SQUARE VOWEL LENGTH MARK
 11A33..11A38  ; Extend # Mn   [6] ZANABAZAR SQUARE FINAL CONSONANT MARK..ZANABAZAR SQUARE SIGN ANUSVARA
 11A3B..11A3E  ; Extend # Mn   [4] ZANABAZAR SQUARE CLUSTER-FINAL LETTER YA..ZANABAZAR SQUARE CLUSTER-FINAL LETTER VA
 11A47         ; Extend # Mn       ZANABAZAR SQUARE SUBJOINER
@@ -379,6 +388,10 @@ FF9E..FF9F    ; Extend # Lm   [2] HALFWIDTH KATAKANA VOICED SOUND MARK..HALFWIDT
 11D3C..11D3D  ; Extend # Mn   [2] MASARAM GONDI VOWEL SIGN AI..MASARAM GONDI VOWEL SIGN O
 11D3F..11D45  ; Extend # Mn   [7] MASARAM GONDI VOWEL SIGN AU..MASARAM GONDI VIRAMA
 11D47         ; Extend # Mn       MASARAM GONDI RA-KARA
+11D90..11D91  ; Extend # Mn   [2] GUNJALA GONDI VOWEL SIGN EE..GUNJALA GONDI VOWEL SIGN AI
+11D95         ; Extend # Mn       GUNJALA GONDI SIGN ANUSVARA
+11D97         ; Extend # Mn       GUNJALA GONDI VIRAMA
+11EF3..11EF4  ; Extend # Mn   [2] MAKASAR VOWEL SIGN I..MAKASAR VOWEL SIGN U
 16AF0..16AF4  ; Extend # Mn   [5] BASSA VAH COMBINING HIGH TONE..BASSA VAH COMBINING HIGH-LOW TONE
 16B30..16B36  ; Extend # Mn   [7] PAHAWH HMONG MARK CIM TUB..PAHAWH HMONG MARK CIM TAUM
 16F8F..16F92  ; Extend # Mn   [4] MIAO TONE RIGHT..MIAO TONE BELOW
@@ -403,10 +416,11 @@ FF9E..FF9F    ; Extend # Lm   [2] HALFWIDTH KATAKANA VOICED SOUND MARK..HALFWIDT
 1E026..1E02A  ; Extend # Mn   [5] COMBINING GLAGOLITIC LETTER YO..COMBINING GLAGOLITIC LETTER FITA
 1E8D0..1E8D6  ; Extend # Mn   [7] MENDE KIKAKUI COMBINING NUMBER TEENS..MENDE KIKAKUI COMBINING NUMBER MILLIONS
 1E944..1E94A  ; Extend # Mn   [7] ADLAM ALIF LENGTHENER..ADLAM NUKTA
+1F3FB..1F3FF  ; Extend # Sk   [5] EMOJI MODIFIER FITZPATRICK TYPE-1-2..EMOJI MODIFIER FITZPATRICK TYPE-6
 E0020..E007F  ; Extend # Cf  [96] TAG SPACE..CANCEL TAG
 E0100..E01EF  ; Extend # Mn [240] VARIATION SELECTOR-17..VARIATION SELECTOR-256
 
-# Total code points: 1901
+# Total code points: 1948
 
 # ================================================
 
@@ -517,6 +531,7 @@ ABEC          ; SpacingMark # Mc       MEETEI MAYEK LUM IYEK
 110B0..110B2  ; SpacingMark # Mc   [3] KAITHI VOWEL SIGN AA..KAITHI VOWEL SIGN II
 110B7..110B8  ; SpacingMark # Mc   [2] KAITHI VOWEL SIGN O..KAITHI VOWEL SIGN AU
 1112C         ; SpacingMark # Mc       CHAKMA VOWEL SIGN E
+11145..11146  ; SpacingMark # Mc   [2] CHAKMA VOWEL SIGN AA..CHAKMA VOWEL SIGN EI
 11182         ; SpacingMark # Mc       SHARADA SIGN VISARGA
 111B3..111B5  ; SpacingMark # Mc   [3] SHARADA VOWEL SIGN AA..SHARADA VOWEL SIGN II
 111BF..111C0  ; SpacingMark # Mc   [2] SHARADA VOWEL SIGN AU..SHARADA SIGN VIRAMA
@@ -549,7 +564,8 @@ ABEC          ; SpacingMark # Mc       MEETEI MAYEK LUM IYEK
 116B6         ; SpacingMark # Mc       TAKRI SIGN VIRAMA
 11720..11721  ; SpacingMark # Mc   [2] AHOM VOWEL SIGN A..AHOM VOWEL SIGN AA
 11726         ; SpacingMark # Mc       AHOM VOWEL SIGN E
-11A07..11A08  ; SpacingMark # Mc   [2] ZANABAZAR SQUARE VOWEL SIGN AI..ZANABAZAR SQUARE VOWEL SIGN AU
+1182C..1182E  ; SpacingMark # Mc   [3] DOGRA VOWEL SIGN AA..DOGRA VOWEL SIGN II
+11838         ; SpacingMark # Mc       DOGRA SIGN VISARGA
 11A39         ; SpacingMark # Mc       ZANABAZAR SQUARE SIGN VISARGA
 11A57..11A58  ; SpacingMark # Mc   [2] SOYOMBO VOWEL SIGN AI..SOYOMBO VOWEL SIGN AU
 11A97         ; SpacingMark # Mc       SOYOMBO SIGN VISARGA
@@ -558,11 +574,15 @@ ABEC          ; SpacingMark # Mc       MEETEI MAYEK LUM IYEK
 11CA9         ; SpacingMark # Mc       MARCHEN SUBJOINED LETTER YA
 11CB1         ; SpacingMark # Mc       MARCHEN VOWEL SIGN I
 11CB4         ; SpacingMark # Mc       MARCHEN VOWEL SIGN O
+11D8A..11D8E  ; SpacingMark # Mc   [5] GUNJALA GONDI VOWEL SIGN AA..GUNJALA GONDI VOWEL SIGN UU
+11D93..11D94  ; SpacingMark # Mc   [2] GUNJALA GONDI VOWEL SIGN OO..GUNJALA GONDI VOWEL SIGN AU
+11D96         ; SpacingMark # Mc       GUNJALA GONDI SIGN VISARGA
+11EF5..11EF6  ; SpacingMark # Mc   [2] MAKASAR VOWEL SIGN E..MAKASAR VOWEL SIGN O
 16F51..16F7E  ; SpacingMark # Mc  [46] MIAO SIGN ASPIRATION..MIAO VOWEL SIGN NG
 1D166         ; SpacingMark # Mc       MUSICAL SYMBOL COMBINING SPRECHGESANG STEM
 1D16D         ; SpacingMark # Mc       MUSICAL SYMBOL COMBINING AUGMENTATION DOT
 
-# Total code points: 348
+# Total code points: 362
 
 # ================================================
 
@@ -1395,81 +1415,8 @@ D789..D7A3    ; LVT # Lo  [27] HANGUL SYLLABLE HIG..HANGUL SYLLABLE HIH
 
 # ================================================
 
-261D          ; E_Base # So       WHITE UP POINTING INDEX
-26F9          ; E_Base # So       PERSON WITH BALL
-270A..270D    ; E_Base # So   [4] RAISED FIST..WRITING HAND
-1F385         ; E_Base # So       FATHER CHRISTMAS
-1F3C2..1F3C4  ; E_Base # So   [3] SNOWBOARDER..SURFER
-1F3C7         ; E_Base # So       HORSE RACING
-1F3CA..1F3CC  ; E_Base # So   [3] SWIMMER..GOLFER
-1F442..1F443  ; E_Base # So   [2] EAR..NOSE
-1F446..1F450  ; E_Base # So  [11] WHITE UP POINTING BACKHAND INDEX..OPEN HANDS SIGN
-1F46E         ; E_Base # So       POLICE OFFICER
-1F470..1F478  ; E_Base # So   [9] BRIDE WITH VEIL..PRINCESS
-1F47C         ; E_Base # So       BABY ANGEL
-1F481..1F483  ; E_Base # So   [3] INFORMATION DESK PERSON..DANCER
-1F485..1F487  ; E_Base # So   [3] NAIL POLISH..HAIRCUT
-1F4AA         ; E_Base # So       FLEXED BICEPS
-1F574..1F575  ; E_Base # So   [2] MAN IN BUSINESS SUIT LEVITATING..SLEUTH OR SPY
-1F57A         ; E_Base # So       MAN DANCING
-1F590         ; E_Base # So       RAISED HAND WITH FINGERS SPLAYED
-1F595..1F596  ; E_Base # So   [2] REVERSED HAND WITH MIDDLE FINGER EXTENDED..RAISED HAND WITH PART BETWEEN MIDDLE AND RING FINGERS
-1F645..1F647  ; E_Base # So   [3] FACE WITH NO GOOD GESTURE..PERSON BOWING DEEPLY
-1F64B..1F64F  ; E_Base # So   [5] HAPPY PERSON RAISING ONE HAND..PERSON WITH FOLDED HANDS
-1F6A3         ; E_Base # So       ROWBOAT
-1F6B4..1F6B6  ; E_Base # So   [3] BICYCLIST..PEDESTRIAN
-1F6C0         ; E_Base # So       BATH
-1F6CC         ; E_Base # So       SLEEPING ACCOMMODATION
-1F918..1F91C  ; E_Base # So   [5] SIGN OF THE HORNS..RIGHT-FACING FIST
-1F91E..1F91F  ; E_Base # So   [2] HAND WITH INDEX AND MIDDLE FINGERS CROSSED..I LOVE YOU HAND SIGN
-1F926         ; E_Base # So       FACE PALM
-1F930..1F939  ; E_Base # So  [10] PREGNANT WOMAN..JUGGLING
-1F93D..1F93E  ; E_Base # So   [2] WATER POLO..HANDBALL
-1F9D1..1F9DD  ; E_Base # So  [13] ADULT..ELF
-
-# Total code points: 98
-
-# ================================================
-
-1F3FB..1F3FF  ; E_Modifier # Sk   [5] EMOJI MODIFIER FITZPATRICK TYPE-1-2..EMOJI MODIFIER FITZPATRICK TYPE-6
-
-# Total code points: 5
-
-# ================================================
-
 200D          ; ZWJ # Cf       ZERO WIDTH JOINER
 
 # Total code points: 1
 
-# ================================================
-
-2640          ; Glue_After_Zwj # So       FEMALE SIGN
-2642          ; Glue_After_Zwj # So       MALE SIGN
-2695..2696    ; Glue_After_Zwj # So   [2] STAFF OF AESCULAPIUS..SCALES
-2708          ; Glue_After_Zwj # So       AIRPLANE
-2764          ; Glue_After_Zwj # So       HEAVY BLACK HEART
-1F308         ; Glue_After_Zwj # So       RAINBOW
-1F33E         ; Glue_After_Zwj # So       EAR OF RICE
-1F373         ; Glue_After_Zwj # So       COOKING
-1F393         ; Glue_After_Zwj # So       GRADUATION CAP
-1F3A4         ; Glue_After_Zwj # So       MICROPHONE
-1F3A8         ; Glue_After_Zwj # So       ARTIST PALETTE
-1F3EB         ; Glue_After_Zwj # So       SCHOOL
-1F3ED         ; Glue_After_Zwj # So       FACTORY
-1F48B         ; Glue_After_Zwj # So       KISS MARK
-1F4BB..1F4BC  ; Glue_After_Zwj # So   [2] PERSONAL COMPUTER..BRIEFCASE
-1F527         ; Glue_After_Zwj # So       WRENCH
-1F52C         ; Glue_After_Zwj # So       MICROSCOPE
-1F5E8         ; Glue_After_Zwj # So       LEFT SPEECH BUBBLE
-1F680         ; Glue_After_Zwj # So       ROCKET
-1F692         ; Glue_After_Zwj # So       FIRE ENGINE
-
-# Total code points: 22
-
-# ================================================
-
-1F466..1F469  ; E_Base_GAZ # So   [4] BOY..WOMAN
-
-# Total code points: 4
-
 # EOF
diff --git a/lib/stdlib/uc_spec/PropList.txt b/lib/stdlib/uc_spec/PropList.txt
index 9a2d0e4b1c..ef86795abe 100644
--- a/lib/stdlib/uc_spec/PropList.txt
+++ b/lib/stdlib/uc_spec/PropList.txt
@@ -1,6 +1,6 @@
-# PropList-10.0.0.txt
-# Date: 2017-03-10, 08:25:30 GMT
-# © 2017 Unicode®, Inc.
+# PropList-11.0.0.txt
+# Date: 2018-03-15, 04:28:35 GMT
+# © 2018 Unicode®, Inc.
 # Unicode and the Unicode Logo are registered trademarks of Unicode, Inc. in the U.S. and other countries.
 # For terms of use, see http://www.unicode.org/terms_of_use.html
 #
@@ -125,7 +125,7 @@ FF63          ; Quotation_Mark # Pe       HALFWIDTH RIGHT CORNER BRACKET
 05C3          ; Terminal_Punctuation # Po       HEBREW PUNCTUATION SOF PASUQ
 060C          ; Terminal_Punctuation # Po       ARABIC COMMA
 061B          ; Terminal_Punctuation # Po       ARABIC SEMICOLON
-061F          ; Terminal_Punctuation # Po       ARABIC QUESTION MARK
+061E..061F    ; Terminal_Punctuation # Po   [2] ARABIC TRIPLE DOT PUNCTUATION MARK..ARABIC QUESTION MARK
 06D4          ; Terminal_Punctuation # Po       ARABIC FULL STOP
 0700..070A    ; Terminal_Punctuation # Po  [11] SYRIAC END OF PARAGRAPH..SYRIAC CONTRACTION
 070C          ; Terminal_Punctuation # Po       SYRIAC HARKLEAN METOBELUS
@@ -156,6 +156,8 @@ FF63          ; Quotation_Mark # Pe       HALFWIDTH RIGHT CORNER BRACKET
 2E2E          ; Terminal_Punctuation # Po       REVERSED QUESTION MARK
 2E3C          ; Terminal_Punctuation # Po       STENOGRAPHIC FULL STOP
 2E41          ; Terminal_Punctuation # Po       REVERSED COMMA
+2E4C          ; Terminal_Punctuation # Po       MEDIEVAL COMMA
+2E4E          ; Terminal_Punctuation # Po       PUNCTUS ELEVATUS MARK
 3001..3002    ; Terminal_Punctuation # Po   [2] IDEOGRAPHIC COMMA..IDEOGRAPHIC FULL STOP
 A4FE..A4FF    ; Terminal_Punctuation # Po   [2] LISU PUNCTUATION COMMA..LISU PUNCTUATION FULL STOP
 A60D..A60F    ; Terminal_Punctuation # Po   [3] VAI COMMA..VAI QUESTION MARK
@@ -185,6 +187,7 @@ FF64          ; Terminal_Punctuation # Po       HALFWIDTH IDEOGRAPHIC COMMA
 10AF0..10AF5  ; Terminal_Punctuation # Po   [6] MANICHAEAN PUNCTUATION STAR..MANICHAEAN PUNCTUATION TWO DOTS
 10B3A..10B3F  ; Terminal_Punctuation # Po   [6] TINY TWO DOTS OVER ONE DOT PUNCTUATION..LARGE ONE RING OVER TWO RINGS PUNCTUATION
 10B99..10B9C  ; Terminal_Punctuation # Po   [4] PSALTER PAHLAVI SECTION MARK..PSALTER PAHLAVI FOUR DOTS WITH DOT
+10F55..10F59  ; Terminal_Punctuation # Po   [5] SOGDIAN PUNCTUATION TWO VERTICAL BARS..SOGDIAN PUNCTUATION HALF CIRCLE WITH DOT
 11047..1104D  ; Terminal_Punctuation # Po   [7] BRAHMI DANDA..BRAHMI PUNCTUATION LOTUS
 110BE..110C1  ; Terminal_Punctuation # Po   [4] KAITHI SECTION MARK..KAITHI DOUBLE DANDA
 11141..11143  ; Terminal_Punctuation # Po   [3] CHAKMA DANDA..CHAKMA QUESTION MARK
@@ -204,15 +207,17 @@ FF64          ; Terminal_Punctuation # Po       HALFWIDTH IDEOGRAPHIC COMMA
 11AA1..11AA2  ; Terminal_Punctuation # Po   [2] SOYOMBO TERMINAL MARK-1..SOYOMBO TERMINAL MARK-2
 11C41..11C43  ; Terminal_Punctuation # Po   [3] BHAIKSUKI DANDA..BHAIKSUKI WORD SEPARATOR
 11C71         ; Terminal_Punctuation # Po       MARCHEN MARK SHAD
+11EF7..11EF8  ; Terminal_Punctuation # Po   [2] MAKASAR PASSIMBANG..MAKASAR END OF SECTION
 12470..12474  ; Terminal_Punctuation # Po   [5] CUNEIFORM PUNCTUATION SIGN OLD ASSYRIAN WORD DIVIDER..CUNEIFORM PUNCTUATION SIGN DIAGONAL QUADCOLON
 16A6E..16A6F  ; Terminal_Punctuation # Po   [2] MRO DANDA..MRO DOUBLE DANDA
 16AF5         ; Terminal_Punctuation # Po       BASSA VAH FULL STOP
 16B37..16B39  ; Terminal_Punctuation # Po   [3] PAHAWH HMONG SIGN VOS THOM..PAHAWH HMONG SIGN CIM CHEEM
 16B44         ; Terminal_Punctuation # Po       PAHAWH HMONG SIGN XAUS
+16E97..16E98  ; Terminal_Punctuation # Po   [2] MEDEFAIDRIN COMMA..MEDEFAIDRIN FULL STOP
 1BC9F         ; Terminal_Punctuation # Po       DUPLOYAN PUNCTUATION CHINOOK FULL STOP
 1DA87..1DA8A  ; Terminal_Punctuation # Po   [4] SIGNWRITING COMMA..SIGNWRITING COLON
 
-# Total code points: 252
+# Total code points: 264
 
 # ================================================
 
@@ -661,6 +666,7 @@ FB1E          ; Other_Alphabetic # Mn       HEBREW POINT JUDEO-SPANISH VARIKA
 10A01..10A03  ; Other_Alphabetic # Mn   [3] KHAROSHTHI VOWEL SIGN I..KHAROSHTHI VOWEL SIGN VOCALIC R
 10A05..10A06  ; Other_Alphabetic # Mn   [2] KHAROSHTHI VOWEL SIGN E..KHAROSHTHI VOWEL SIGN O
 10A0C..10A0F  ; Other_Alphabetic # Mn   [4] KHAROSHTHI VOWEL LENGTH MARK..KHAROSHTHI SIGN VISARGA
+10D24..10D27  ; Other_Alphabetic # Mn   [4] HANIFI ROHINGYA SIGN HARBAHAY..HANIFI ROHINGYA SIGN TASSI
 11000         ; Other_Alphabetic # Mc       BRAHMI SIGN CANDRABINDU
 11001         ; Other_Alphabetic # Mn       BRAHMI SIGN ANUSVARA
 11002         ; Other_Alphabetic # Mc       BRAHMI SIGN VISARGA
@@ -673,6 +679,7 @@ FB1E          ; Other_Alphabetic # Mn       HEBREW POINT JUDEO-SPANISH VARIKA
 11127..1112B  ; Other_Alphabetic # Mn   [5] CHAKMA VOWEL SIGN A..CHAKMA VOWEL SIGN UU
 1112C         ; Other_Alphabetic # Mc       CHAKMA VOWEL SIGN E
 1112D..11132  ; Other_Alphabetic # Mn   [6] CHAKMA VOWEL SIGN AI..CHAKMA AU MARK
+11145..11146  ; Other_Alphabetic # Mc   [2] CHAKMA VOWEL SIGN AA..CHAKMA VOWEL SIGN EI
 11180..11181  ; Other_Alphabetic # Mn   [2] SHARADA SIGN CANDRABINDU..SHARADA SIGN ANUSVARA
 11182         ; Other_Alphabetic # Mc       SHARADA SIGN VISARGA
 111B3..111B5  ; Other_Alphabetic # Mc   [3] SHARADA VOWEL SIGN AA..SHARADA VOWEL SIGN II
@@ -730,9 +737,10 @@ FB1E          ; Other_Alphabetic # Mn       HEBREW POINT JUDEO-SPANISH VARIKA
 11722..11725  ; Other_Alphabetic # Mn   [4] AHOM VOWEL SIGN I..AHOM VOWEL SIGN UU
 11726         ; Other_Alphabetic # Mc       AHOM VOWEL SIGN E
 11727..1172A  ; Other_Alphabetic # Mn   [4] AHOM VOWEL SIGN AW..AHOM VOWEL SIGN AM
-11A01..11A06  ; Other_Alphabetic # Mn   [6] ZANABAZAR SQUARE VOWEL SIGN I..ZANABAZAR SQUARE VOWEL SIGN O
-11A07..11A08  ; Other_Alphabetic # Mc   [2] ZANABAZAR SQUARE VOWEL SIGN AI..ZANABAZAR SQUARE VOWEL SIGN AU
-11A09..11A0A  ; Other_Alphabetic # Mn   [2] ZANABAZAR SQUARE VOWEL SIGN REVERSED I..ZANABAZAR SQUARE VOWEL LENGTH MARK
+1182C..1182E  ; Other_Alphabetic # Mc   [3] DOGRA VOWEL SIGN AA..DOGRA VOWEL SIGN II
+1182F..11837  ; Other_Alphabetic # Mn   [9] DOGRA VOWEL SIGN U..DOGRA SIGN ANUSVARA
+11838         ; Other_Alphabetic # Mc       DOGRA SIGN VISARGA
+11A01..11A0A  ; Other_Alphabetic # Mn  [10] ZANABAZAR SQUARE VOWEL SIGN I..ZANABAZAR SQUARE VOWEL LENGTH MARK
 11A35..11A38  ; Other_Alphabetic # Mn   [4] ZANABAZAR SQUARE SIGN CANDRABINDU..ZANABAZAR SQUARE SIGN ANUSVARA
 11A39         ; Other_Alphabetic # Mc       ZANABAZAR SQUARE SIGN VISARGA
 11A3B..11A3E  ; Other_Alphabetic # Mn   [4] ZANABAZAR SQUARE CLUSTER-FINAL LETTER YA..ZANABAZAR SQUARE CLUSTER-FINAL LETTER VA
@@ -758,6 +766,13 @@ FB1E          ; Other_Alphabetic # Mn       HEBREW POINT JUDEO-SPANISH VARIKA
 11D3F..11D41  ; Other_Alphabetic # Mn   [3] MASARAM GONDI VOWEL SIGN AU..MASARAM GONDI SIGN VISARGA
 11D43         ; Other_Alphabetic # Mn       MASARAM GONDI SIGN CANDRA
 11D47         ; Other_Alphabetic # Mn       MASARAM GONDI RA-KARA
+11D8A..11D8E  ; Other_Alphabetic # Mc   [5] GUNJALA GONDI VOWEL SIGN AA..GUNJALA GONDI VOWEL SIGN UU
+11D90..11D91  ; Other_Alphabetic # Mn   [2] GUNJALA GONDI VOWEL SIGN EE..GUNJALA GONDI VOWEL SIGN AI
+11D93..11D94  ; Other_Alphabetic # Mc   [2] GUNJALA GONDI VOWEL SIGN OO..GUNJALA GONDI VOWEL SIGN AU
+11D95         ; Other_Alphabetic # Mn       GUNJALA GONDI SIGN ANUSVARA
+11D96         ; Other_Alphabetic # Mc       GUNJALA GONDI SIGN VISARGA
+11EF3..11EF4  ; Other_Alphabetic # Mn   [2] MAKASAR VOWEL SIGN I..MAKASAR VOWEL SIGN U
+11EF5..11EF6  ; Other_Alphabetic # Mc   [2] MAKASAR VOWEL SIGN E..MAKASAR VOWEL SIGN O
 16B30..16B36  ; Other_Alphabetic # Mn   [7] PAHAWH HMONG MARK CIM TUB..PAHAWH HMONG MARK CIM TAUM
 16F51..16F7E  ; Other_Alphabetic # Mc  [46] MIAO SIGN ASPIRATION..MIAO VOWEL SIGN NG
 1BC9E         ; Other_Alphabetic # Mn       DUPLOYAN DOUBLE MARK
@@ -771,7 +786,7 @@ FB1E          ; Other_Alphabetic # Mn       HEBREW POINT JUDEO-SPANISH VARIKA
 1F150..1F169  ; Other_Alphabetic # So  [26] NEGATIVE CIRCLED LATIN CAPITAL LETTER A..NEGATIVE CIRCLED LATIN CAPITAL LETTER Z
 1F170..1F189  ; Other_Alphabetic # So  [26] NEGATIVE SQUARED LATIN CAPITAL LETTER A..NEGATIVE SQUARED LATIN CAPITAL LETTER Z
 
-# Total code points: 1300
+# Total code points: 1334
 
 # ================================================
 
@@ -780,10 +795,10 @@ FB1E          ; Other_Alphabetic # Mn       HEBREW POINT JUDEO-SPANISH VARIKA
 3021..3029    ; Ideographic # Nl   [9] HANGZHOU NUMERAL ONE..HANGZHOU NUMERAL NINE
 3038..303A    ; Ideographic # Nl   [3] HANGZHOU NUMERAL TEN..HANGZHOU NUMERAL THIRTY
 3400..4DB5    ; Ideographic # Lo [6582] CJK UNIFIED IDEOGRAPH-3400..CJK UNIFIED IDEOGRAPH-4DB5
-4E00..9FEA    ; Ideographic # Lo [20971] CJK UNIFIED IDEOGRAPH-4E00..CJK UNIFIED IDEOGRAPH-9FEA
+4E00..9FEF    ; Ideographic # Lo [20976] CJK UNIFIED IDEOGRAPH-4E00..CJK UNIFIED IDEOGRAPH-9FEF
 F900..FA6D    ; Ideographic # Lo [366] CJK COMPATIBILITY IDEOGRAPH-F900..CJK COMPATIBILITY IDEOGRAPH-FA6D
 FA70..FAD9    ; Ideographic # Lo [106] CJK COMPATIBILITY IDEOGRAPH-FA70..CJK COMPATIBILITY IDEOGRAPH-FAD9
-17000..187EC  ; Ideographic # Lo [6125] TANGUT IDEOGRAPH-17000..TANGUT IDEOGRAPH-187EC
+17000..187F1  ; Ideographic # Lo [6130] TANGUT IDEOGRAPH-17000..TANGUT IDEOGRAPH-187F1
 18800..18AF2  ; Ideographic # Lo [755] TANGUT COMPONENT-001..TANGUT COMPONENT-755
 1B170..1B2FB  ; Ideographic # Lo [396] NUSHU CHARACTER-1B170..NUSHU CHARACTER-1B2FB
 20000..2A6D6  ; Ideographic # Lo [42711] CJK UNIFIED IDEOGRAPH-20000..CJK UNIFIED IDEOGRAPH-2A6D6
@@ -793,7 +808,7 @@ FA70..FAD9    ; Ideographic # Lo [106] CJK COMPATIBILITY IDEOGRAPH-FA70..CJK COM
 2CEB0..2EBE0  ; Ideographic # Lo [7473] CJK UNIFIED IDEOGRAPH-2CEB0..CJK UNIFIED IDEOGRAPH-2EBE0
 2F800..2FA1D  ; Ideographic # Lo [542] CJK COMPATIBILITY IDEOGRAPH-2F800..CJK COMPATIBILITY IDEOGRAPH-2FA1D
 
-# Total code points: 96174
+# Total code points: 96184
 
 # ================================================
 
@@ -953,6 +968,9 @@ FF9E..FF9F    ; Diacritic # Lm   [2] HALFWIDTH KATAKANA VOICED SOUND MARK..HALFW
 FFE3          ; Diacritic # Sk       FULLWIDTH MACRON
 102E0         ; Diacritic # Mn       COPTIC EPACT THOUSANDS MARK
 10AE5..10AE6  ; Diacritic # Mn   [2] MANICHAEAN ABBREVIATION MARK ABOVE..MANICHAEAN ABBREVIATION MARK BELOW
+10D22..10D23  ; Diacritic # Lo   [2] HANIFI ROHINGYA MARK SAKIN..HANIFI ROHINGYA MARK NA KHONNA
+10D24..10D27  ; Diacritic # Mn   [4] HANIFI ROHINGYA SIGN HARBAHAY..HANIFI ROHINGYA SIGN TASSI
+10F46..10F50  ; Diacritic # Mn  [11] SOGDIAN COMBINING DOT BELOW..SOGDIAN COMBINING STROKE BELOW
 110B9..110BA  ; Diacritic # Mn   [2] KAITHI SIGN VIRAMA..KAITHI SIGN NUKTA
 11133..11134  ; Diacritic # Mn   [2] CHAKMA VIRAMA..CHAKMA MAAYYAA
 11173         ; Diacritic # Mn       MAHAJANI SIGN NUKTA
@@ -973,12 +991,14 @@ FFE3          ; Diacritic # Sk       FULLWIDTH MACRON
 116B6         ; Diacritic # Mc       TAKRI SIGN VIRAMA
 116B7         ; Diacritic # Mn       TAKRI SIGN NUKTA
 1172B         ; Diacritic # Mn       AHOM SIGN KILLER
+11839..1183A  ; Diacritic # Mn   [2] DOGRA SIGN VIRAMA..DOGRA SIGN NUKTA
 11A34         ; Diacritic # Mn       ZANABAZAR SQUARE SIGN VIRAMA
 11A47         ; Diacritic # Mn       ZANABAZAR SQUARE SUBJOINER
 11A99         ; Diacritic # Mn       SOYOMBO SUBJOINER
 11C3F         ; Diacritic # Mn       BHAIKSUKI SIGN VIRAMA
 11D42         ; Diacritic # Mn       MASARAM GONDI SIGN NUKTA
 11D44..11D45  ; Diacritic # Mn   [2] MASARAM GONDI SIGN HALANTA..MASARAM GONDI VIRAMA
+11D97         ; Diacritic # Mn       GUNJALA GONDI VIRAMA
 16AF0..16AF4  ; Diacritic # Mn   [5] BASSA VAH COMBINING HIGH TONE..BASSA VAH COMBINING HIGH-LOW TONE
 16F8F..16F92  ; Diacritic # Mn   [4] MIAO TONE RIGHT..MIAO TONE BELOW
 16F93..16F9F  ; Diacritic # Lm  [13] MIAO LETTER TONE-2..MIAO LETTER REFORMED TONE-8
@@ -991,7 +1011,7 @@ FFE3          ; Diacritic # Sk       FULLWIDTH MACRON
 1E944..1E946  ; Diacritic # Mn   [3] ADLAM ALIF LENGTHENER..ADLAM GEMINATION MARK
 1E948..1E94A  ; Diacritic # Mn   [3] ADLAM CONSONANT MODIFIER..ADLAM NUKTA
 
-# Total code points: 798
+# Total code points: 818
 
 # ================================================
 
@@ -1137,7 +1157,7 @@ E0020..E007F  ; Other_Grapheme_Extend # Cf  [96] TAG SPACE..CANCEL TAG
 # ================================================
 
 3400..4DB5    ; Unified_Ideograph # Lo [6582] CJK UNIFIED IDEOGRAPH-3400..CJK UNIFIED IDEOGRAPH-4DB5
-4E00..9FEA    ; Unified_Ideograph # Lo [20971] CJK UNIFIED IDEOGRAPH-4E00..CJK UNIFIED IDEOGRAPH-9FEA
+4E00..9FEF    ; Unified_Ideograph # Lo [20976] CJK UNIFIED IDEOGRAPH-4E00..CJK UNIFIED IDEOGRAPH-9FEF
 FA0E..FA0F    ; Unified_Ideograph # Lo   [2] CJK COMPATIBILITY IDEOGRAPH-FA0E..CJK COMPATIBILITY IDEOGRAPH-FA0F
 FA11          ; Unified_Ideograph # Lo       CJK COMPATIBILITY IDEOGRAPH-FA11
 FA13..FA14    ; Unified_Ideograph # Lo   [2] CJK COMPATIBILITY IDEOGRAPH-FA13..CJK COMPATIBILITY IDEOGRAPH-FA14
@@ -1151,7 +1171,7 @@ FA27..FA29    ; Unified_Ideograph # Lo   [3] CJK COMPATIBILITY IDEOGRAPH-FA27..C
 2B820..2CEA1  ; Unified_Ideograph # Lo [5762] CJK UNIFIED IDEOGRAPH-2B820..CJK UNIFIED IDEOGRAPH-2CEA1
 2CEB0..2EBE0  ; Unified_Ideograph # Lo [7473] CJK UNIFIED IDEOGRAPH-2CEB0..CJK UNIFIED IDEOGRAPH-2EBE0
 
-# Total code points: 87882
+# Total code points: 87887
 
 # ================================================
 
@@ -1255,10 +1275,13 @@ AABB..AABC    ; Logical_Order_Exception # Lo   [2] TAI VIET VOWEL AUE..TAI VIET
 002E          ; Sentence_Terminal # Po       FULL STOP
 003F          ; Sentence_Terminal # Po       QUESTION MARK
 0589          ; Sentence_Terminal # Po       ARMENIAN FULL STOP
-061F          ; Sentence_Terminal # Po       ARABIC QUESTION MARK
+061E..061F    ; Sentence_Terminal # Po   [2] ARABIC TRIPLE DOT PUNCTUATION MARK..ARABIC QUESTION MARK
 06D4          ; Sentence_Terminal # Po       ARABIC FULL STOP
 0700..0702    ; Sentence_Terminal # Po   [3] SYRIAC END OF PARAGRAPH..SYRIAC SUBLINEAR FULL STOP
 07F9          ; Sentence_Terminal # Po       NKO EXCLAMATION MARK
+0837          ; Sentence_Terminal # Po       SAMARITAN PUNCTUATION MELODIC QITSA
+0839          ; Sentence_Terminal # Po       SAMARITAN PUNCTUATION QITSA
+083D..083E    ; Sentence_Terminal # Po   [2] SAMARITAN PUNCTUATION SOF MASHFAAT..SAMARITAN PUNCTUATION ANNAAU
 0964..0965    ; Sentence_Terminal # Po   [2] DEVANAGARI DANDA..DEVANAGARI DOUBLE DANDA
 104A..104B    ; Sentence_Terminal # Po   [2] MYANMAR SIGN LITTLE SECTION..MYANMAR SIGN SECTION
 1362          ; Sentence_Terminal # Po       ETHIOPIC FULL STOP
@@ -1296,6 +1319,7 @@ FF0E          ; Sentence_Terminal # Po       FULLWIDTH FULL STOP
 FF1F          ; Sentence_Terminal # Po       FULLWIDTH QUESTION MARK
 FF61          ; Sentence_Terminal # Po       HALFWIDTH IDEOGRAPHIC FULL STOP
 10A56..10A57  ; Sentence_Terminal # Po   [2] KHAROSHTHI PUNCTUATION DANDA..KHAROSHTHI PUNCTUATION DOUBLE DANDA
+10F55..10F59  ; Sentence_Terminal # Po   [5] SOGDIAN PUNCTUATION TWO VERTICAL BARS..SOGDIAN PUNCTUATION HALF CIRCLE WITH DOT
 11047..11048  ; Sentence_Terminal # Po   [2] BRAHMI DANDA..BRAHMI DOUBLE DANDA
 110BE..110C1  ; Sentence_Terminal # Po   [4] KAITHI SECTION MARK..KAITHI DOUBLE DANDA
 11141..11143  ; Sentence_Terminal # Po   [3] CHAKMA DANDA..CHAKMA QUESTION MARK
@@ -1313,14 +1337,16 @@ FF61          ; Sentence_Terminal # Po       HALFWIDTH IDEOGRAPHIC FULL STOP
 11A42..11A43  ; Sentence_Terminal # Po   [2] ZANABAZAR SQUARE MARK SHAD..ZANABAZAR SQUARE MARK DOUBLE SHAD
 11A9B..11A9C  ; Sentence_Terminal # Po   [2] SOYOMBO MARK SHAD..SOYOMBO MARK DOUBLE SHAD
 11C41..11C42  ; Sentence_Terminal # Po   [2] BHAIKSUKI DANDA..BHAIKSUKI DOUBLE DANDA
+11EF7..11EF8  ; Sentence_Terminal # Po   [2] MAKASAR PASSIMBANG..MAKASAR END OF SECTION
 16A6E..16A6F  ; Sentence_Terminal # Po   [2] MRO DANDA..MRO DOUBLE DANDA
 16AF5         ; Sentence_Terminal # Po       BASSA VAH FULL STOP
 16B37..16B38  ; Sentence_Terminal # Po   [2] PAHAWH HMONG SIGN VOS THOM..PAHAWH HMONG SIGN VOS TSHAB CEEB
 16B44         ; Sentence_Terminal # Po       PAHAWH HMONG SIGN XAUS
+16E98         ; Sentence_Terminal # Po       MEDEFAIDRIN FULL STOP
 1BC9F         ; Sentence_Terminal # Po       DUPLOYAN PUNCTUATION CHINOOK FULL STOP
 1DA88         ; Sentence_Terminal # Po       SIGNWRITING FULL STOP
 
-# Total code points: 128
+# Total code points: 141
 
 # ================================================
 
@@ -1521,14 +1547,10 @@ E0100..E01EF  ; Variation_Selector # Mn [240] VARIATION SELECTOR-17..VARIATION S
 2B74..2B75    ; Pattern_Syntax # Cn   [2] <reserved-2B74>..<reserved-2B75>
 2B76..2B95    ; Pattern_Syntax # So  [32] NORTH WEST TRIANGLE-HEADED ARROW TO BAR..RIGHTWARDS BLACK ARROW
 2B96..2B97    ; Pattern_Syntax # Cn   [2] <reserved-2B96>..<reserved-2B97>
-2B98..2BB9    ; Pattern_Syntax # So  [34] THREE-D TOP-LIGHTED LEFTWARDS EQUILATERAL ARROWHEAD..UP ARROWHEAD IN A RECTANGLE BOX
-2BBA..2BBC    ; Pattern_Syntax # Cn   [3] <reserved-2BBA>..<reserved-2BBC>
-2BBD..2BC8    ; Pattern_Syntax # So  [12] BALLOT BOX WITH LIGHT X..BLACK MEDIUM RIGHT-POINTING TRIANGLE CENTRED
+2B98..2BC8    ; Pattern_Syntax # So  [49] THREE-D TOP-LIGHTED LEFTWARDS EQUILATERAL ARROWHEAD..BLACK MEDIUM RIGHT-POINTING TRIANGLE CENTRED
 2BC9          ; Pattern_Syntax # Cn       <reserved-2BC9>
-2BCA..2BD2    ; Pattern_Syntax # So   [9] TOP HALF BLACK CIRCLE..GROUP MARK
-2BD3..2BEB    ; Pattern_Syntax # Cn  [25] <reserved-2BD3>..<reserved-2BEB>
-2BEC..2BEF    ; Pattern_Syntax # So   [4] LEFTWARDS TWO-HEADED ARROW WITH TRIANGLE ARROWHEADS..DOWNWARDS TWO-HEADED ARROW WITH TRIANGLE ARROWHEADS
-2BF0..2BFF    ; Pattern_Syntax # Cn  [16] <reserved-2BF0>..<reserved-2BFF>
+2BCA..2BFE    ; Pattern_Syntax # So  [53] TOP HALF BLACK CIRCLE..REVERSED RIGHT ANGLE
+2BFF          ; Pattern_Syntax # Cn       <reserved-2BFF>
 2E00..2E01    ; Pattern_Syntax # Po   [2] RIGHT ANGLE SUBSTITUTION MARKER..RIGHT ANGLE DOTTED SUBSTITUTION MARKER
 2E02          ; Pattern_Syntax # Pi       LEFT SUBSTITUTION BRACKET
 2E03          ; Pattern_Syntax # Pf       RIGHT SUBSTITUTION BRACKET
@@ -1566,8 +1588,8 @@ E0100..E01EF  ; Variation_Selector # Mn [240] VARIATION SELECTOR-17..VARIATION S
 2E40          ; Pattern_Syntax # Pd       DOUBLE HYPHEN
 2E41          ; Pattern_Syntax # Po       REVERSED COMMA
 2E42          ; Pattern_Syntax # Ps       DOUBLE LOW-REVERSED-9 QUOTATION MARK
-2E43..2E49    ; Pattern_Syntax # Po   [7] DASH WITH LEFT UPTURN..DOUBLE STACKED COMMA
-2E4A..2E7F    ; Pattern_Syntax # Cn  [54] <reserved-2E4A>..<reserved-2E7F>
+2E43..2E4E    ; Pattern_Syntax # Po  [12] DASH WITH LEFT UPTURN..PUNCTUS ELEVATUS MARK
+2E4F..2E7F    ; Pattern_Syntax # Cn  [49] <reserved-2E4F>..<reserved-2E7F>
 3001..3003    ; Pattern_Syntax # Po   [3] IDEOGRAPHIC COMMA..DITTO MARK
 3008          ; Pattern_Syntax # Ps       LEFT ANGLE BRACKET
 3009          ; Pattern_Syntax # Pe       RIGHT ANGLE BRACKET
@@ -1606,8 +1628,9 @@ FE45..FE46    ; Pattern_Syntax # Po   [2] SESAME DOT..WHITE SESAME DOT
 070F          ; Prepended_Concatenation_Mark # Cf       SYRIAC ABBREVIATION MARK
 08E2          ; Prepended_Concatenation_Mark # Cf       ARABIC DISPUTED END OF AYAH
 110BD         ; Prepended_Concatenation_Mark # Cf       KAITHI NUMBER SIGN
+110CD         ; Prepended_Concatenation_Mark # Cf       KAITHI NUMBER SIGN ABOVE
 
-# Total code points: 10
+# Total code points: 11
 
 # ================================================
 
diff --git a/lib/stdlib/uc_spec/README-UPDATE.txt b/lib/stdlib/uc_spec/README-UPDATE.txt
index d59337e1a5..e1f5c8fcd0 100644
--- a/lib/stdlib/uc_spec/README-UPDATE.txt
+++ b/lib/stdlib/uc_spec/README-UPDATE.txt
@@ -1,7 +1,13 @@
 When updating the unicode version copy the necessary files to this
 directory.
-
 And update the test files in stdlib/test/unicode_util_SUITE_data/*
 
+Unicode 11 was updated from:
+https://www.unicode.org/Public/11.0.0/ucd/
+https://www.unicode.org/Public/11.0.0/ucd/auxiliary/
+https://www.unicode.org/Public/emoji/11.0/
+
 Update the spec_version(..) function in the generator,
 gen_unicode_mod.escript
+
+
diff --git a/lib/stdlib/uc_spec/SpecialCasing.txt b/lib/stdlib/uc_spec/SpecialCasing.txt
index b9ba0d81c1..c90d09acb3 100644
--- a/lib/stdlib/uc_spec/SpecialCasing.txt
+++ b/lib/stdlib/uc_spec/SpecialCasing.txt
@@ -1,6 +1,6 @@
-# SpecialCasing-10.0.0.txt
-# Date: 2017-04-14, 05:40:43 GMT
-# © 2017 Unicode®, Inc.
+# SpecialCasing-11.0.0.txt
+# Date: 2018-02-22, 06:16:47 GMT
+# © 2018 Unicode®, Inc.
 # Unicode and the Unicode Logo are registered trademarks of Unicode, Inc. in the U.S. and other countries.
 # For terms of use, see http://www.unicode.org/terms_of_use.html
 #
@@ -121,7 +121,7 @@ FB17; FB17; 0544 056D; 0544 053D; # ARMENIAN SMALL LIGATURE MEN XEH
 
 # The following cases are already in the UnicodeData.txt file, so are only commented here.
 
-# 0345; 0345; 0345; 0399; # COMBINING GREEK YPOGEGRAMMENI
+# 0345; 0345; 0399; 0399; # COMBINING GREEK YPOGEGRAMMENI
 
 # All letters with YPOGEGRAMMENI (iota-subscript) or PROSGEGRAMMENI (iota adscript)
 # have special uppercases.
diff --git a/lib/stdlib/uc_spec/UnicodeData.txt b/lib/stdlib/uc_spec/UnicodeData.txt
index d89c64f526..ec32fafbce 100644
--- a/lib/stdlib/uc_spec/UnicodeData.txt
+++ b/lib/stdlib/uc_spec/UnicodeData.txt
@@ -1362,6 +1362,7 @@
 055D;ARMENIAN COMMA;Po;0;L;;;;;N;;;;;
 055E;ARMENIAN QUESTION MARK;Po;0;L;;;;;N;;;;;
 055F;ARMENIAN ABBREVIATION MARK;Po;0;L;;;;;N;;;;;
+0560;ARMENIAN SMALL LETTER TURNED AYB;Ll;0;L;;;;;N;;;;;
 0561;ARMENIAN SMALL LETTER AYB;Ll;0;L;;;;;N;;;0531;;0531
 0562;ARMENIAN SMALL LETTER BEN;Ll;0;L;;;;;N;;;0532;;0532
 0563;ARMENIAN SMALL LETTER GIM;Ll;0;L;;;;;N;;;0533;;0533
@@ -1401,6 +1402,7 @@
 0585;ARMENIAN SMALL LETTER OH;Ll;0;L;;;;;N;;;0555;;0555
 0586;ARMENIAN SMALL LETTER FEH;Ll;0;L;;;;;N;;;0556;;0556
 0587;ARMENIAN SMALL LIGATURE ECH YIWN;Ll;0;L;<compat> 0565 0582;;;;N;;;;;
+0588;ARMENIAN SMALL LETTER YI WITH STROKE;Ll;0;L;;;;;N;;;;;
 0589;ARMENIAN FULL STOP;Po;0;L;;;;;N;ARMENIAN PERIOD;;;;
 058A;ARMENIAN HYPHEN;Pd;0;ON;;;;;N;;;;;
 058D;RIGHT-FACING ARMENIAN ETERNITY SIGN;So;0;ON;;;;;N;;;;;
@@ -1488,6 +1490,7 @@
 05E8;HEBREW LETTER RESH;Lo;0;R;;;;;N;;;;;
 05E9;HEBREW LETTER SHIN;Lo;0;R;;;;;N;;;;;
 05EA;HEBREW LETTER TAV;Lo;0;R;;;;;N;;;;;
+05EF;HEBREW YOD TRIANGLE;Lo;0;R;;;;;N;;;;;
 05F0;HEBREW LIGATURE YIDDISH DOUBLE VAV;Lo;0;R;;;;;N;HEBREW LETTER DOUBLE VAV;;;;
 05F1;HEBREW LIGATURE YIDDISH VAV YOD;Lo;0;R;;;;;N;HEBREW LETTER VAV YOD;;;;
 05F2;HEBREW LIGATURE YIDDISH DOUBLE YOD;Lo;0;R;;;;;N;HEBREW LETTER DOUBLE YOD;;;;
@@ -1982,6 +1985,9 @@
 07F8;NKO COMMA;Po;0;ON;;;;;N;;;;;
 07F9;NKO EXCLAMATION MARK;Po;0;ON;;;;;N;;;;;
 07FA;NKO LAJANYALAN;Lm;0;R;;;;;N;;;;;
+07FD;NKO DANTAYALAN;Mn;220;NSM;;;;;N;;;;;
+07FE;NKO DOROME SIGN;Sc;0;R;;;;;N;;;;;
+07FF;NKO TAMAN SIGN;Sc;0;R;;;;;N;;;;;
 0800;SAMARITAN LETTER ALAF;Lo;0;R;;;;;N;;;;;
 0801;SAMARITAN LETTER BIT;Lo;0;R;;;;;N;;;;;
 0802;SAMARITAN LETTER GAMAN;Lo;0;R;;;;;N;;;;;
@@ -2112,6 +2118,7 @@
 08BB;ARABIC LETTER AFRICAN FEH;Lo;0;AL;;;;;N;;;;;
 08BC;ARABIC LETTER AFRICAN QAF;Lo;0;AL;;;;;N;;;;;
 08BD;ARABIC LETTER AFRICAN NOON;Lo;0;AL;;;;;N;;;;;
+08D3;ARABIC SMALL LOW WAW;Mn;220;NSM;;;;;N;;;;;
 08D4;ARABIC SMALL HIGH WORD AR-RUB;Mn;230;NSM;;;;;N;;;;;
 08D5;ARABIC SMALL HIGH SAD;Mn;230;NSM;;;;;N;;;;;
 08D6;ARABIC SMALL HIGH AIN;Mn;230;NSM;;;;;N;;;;;
@@ -2379,6 +2386,7 @@
 09FB;BENGALI GANDA MARK;Sc;0;ET;;;;;N;;;;;
 09FC;BENGALI LETTER VEDIC ANUSVARA;Lo;0;L;;;;;N;;;;;
 09FD;BENGALI ABBREVIATION SIGN;Po;0;L;;;;;N;;;;;
+09FE;BENGALI SANDHI MARK;Mn;230;NSM;;;;;N;;;;;
 0A01;GURMUKHI SIGN ADAK BINDI;Mn;0;NSM;;;;;N;;;;;
 0A02;GURMUKHI SIGN BINDI;Mn;0;NSM;;;;;N;;;;;
 0A03;GURMUKHI SIGN VISARGA;Mc;0;L;;;;;N;;;;;
@@ -2458,6 +2466,7 @@
 0A73;GURMUKHI URA;Lo;0;L;;;;;N;;;;;
 0A74;GURMUKHI EK ONKAR;Lo;0;L;;;;;N;;;;;
 0A75;GURMUKHI SIGN YAKASH;Mn;0;NSM;;;;;N;;;;;
+0A76;GURMUKHI ABBREVIATION SIGN;Po;0;L;;;;;N;;;;;
 0A81;GUJARATI SIGN CANDRABINDU;Mn;0;NSM;;;;;N;;;;;
 0A82;GUJARATI SIGN ANUSVARA;Mn;0;NSM;;;;;N;;;;;
 0A83;GUJARATI SIGN VISARGA;Mc;0;L;;;;;N;;;;;
@@ -2715,6 +2724,7 @@
 0C01;TELUGU SIGN CANDRABINDU;Mc;0;L;;;;;N;;;;;
 0C02;TELUGU SIGN ANUSVARA;Mc;0;L;;;;;N;;;;;
 0C03;TELUGU SIGN VISARGA;Mc;0;L;;;;;N;;;;;
+0C04;TELUGU SIGN COMBINING ANUSVARA ABOVE;Mn;0;NSM;;;;;N;;;;;
 0C05;TELUGU LETTER A;Lo;0;L;;;;;N;;;;;
 0C06;TELUGU LETTER AA;Lo;0;L;;;;;N;;;;;
 0C07;TELUGU LETTER I;Lo;0;L;;;;;N;;;;;
@@ -2811,6 +2821,7 @@
 0C81;KANNADA SIGN CANDRABINDU;Mn;0;NSM;;;;;N;;;;;
 0C82;KANNADA SIGN ANUSVARA;Mc;0;L;;;;;N;;;;;
 0C83;KANNADA SIGN VISARGA;Mc;0;L;;;;;N;;;;;
+0C84;KANNADA SIGN SIDDHAM;Po;0;L;;;;;N;;;;;
 0C85;KANNADA LETTER A;Lo;0;L;;;;;N;;;;;
 0C86;KANNADA LETTER AA;Lo;0;L;;;;;N;;;;;
 0C87;KANNADA LETTER I;Lo;0;L;;;;;N;;;;;
@@ -3667,54 +3678,54 @@
 10C5;GEORGIAN CAPITAL LETTER HOE;Lu;0;L;;;;;N;;;;2D25;
 10C7;GEORGIAN CAPITAL LETTER YN;Lu;0;L;;;;;N;;;;2D27;
 10CD;GEORGIAN CAPITAL LETTER AEN;Lu;0;L;;;;;N;;;;2D2D;
-10D0;GEORGIAN LETTER AN;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER AN;;;;
-10D1;GEORGIAN LETTER BAN;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER BAN;;;;
-10D2;GEORGIAN LETTER GAN;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER GAN;;;;
-10D3;GEORGIAN LETTER DON;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER DON;;;;
-10D4;GEORGIAN LETTER EN;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER EN;;;;
-10D5;GEORGIAN LETTER VIN;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER VIN;;;;
-10D6;GEORGIAN LETTER ZEN;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER ZEN;;;;
-10D7;GEORGIAN LETTER TAN;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER TAN;;;;
-10D8;GEORGIAN LETTER IN;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER IN;;;;
-10D9;GEORGIAN LETTER KAN;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER KAN;;;;
-10DA;GEORGIAN LETTER LAS;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER LAS;;;;
-10DB;GEORGIAN LETTER MAN;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER MAN;;;;
-10DC;GEORGIAN LETTER NAR;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER NAR;;;;
-10DD;GEORGIAN LETTER ON;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER ON;;;;
-10DE;GEORGIAN LETTER PAR;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER PAR;;;;
-10DF;GEORGIAN LETTER ZHAR;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER ZHAR;;;;
-10E0;GEORGIAN LETTER RAE;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER RAE;;;;
-10E1;GEORGIAN LETTER SAN;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER SAN;;;;
-10E2;GEORGIAN LETTER TAR;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER TAR;;;;
-10E3;GEORGIAN LETTER UN;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER UN;;;;
-10E4;GEORGIAN LETTER PHAR;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER PHAR;;;;
-10E5;GEORGIAN LETTER KHAR;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER KHAR;;;;
-10E6;GEORGIAN LETTER GHAN;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER GHAN;;;;
-10E7;GEORGIAN LETTER QAR;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER QAR;;;;
-10E8;GEORGIAN LETTER SHIN;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER SHIN;;;;
-10E9;GEORGIAN LETTER CHIN;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER CHIN;;;;
-10EA;GEORGIAN LETTER CAN;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER CAN;;;;
-10EB;GEORGIAN LETTER JIL;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER JIL;;;;
-10EC;GEORGIAN LETTER CIL;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER CIL;;;;
-10ED;GEORGIAN LETTER CHAR;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER CHAR;;;;
-10EE;GEORGIAN LETTER XAN;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER XAN;;;;
-10EF;GEORGIAN LETTER JHAN;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER JHAN;;;;
-10F0;GEORGIAN LETTER HAE;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER HAE;;;;
-10F1;GEORGIAN LETTER HE;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER HE;;;;
-10F2;GEORGIAN LETTER HIE;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER HIE;;;;
-10F3;GEORGIAN LETTER WE;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER WE;;;;
-10F4;GEORGIAN LETTER HAR;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER HAR;;;;
-10F5;GEORGIAN LETTER HOE;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER HOE;;;;
-10F6;GEORGIAN LETTER FI;Lo;0;L;;;;;N;GEORGIAN SMALL LETTER FI;;;;
-10F7;GEORGIAN LETTER YN;Lo;0;L;;;;;N;;;;;
-10F8;GEORGIAN LETTER ELIFI;Lo;0;L;;;;;N;;;;;
-10F9;GEORGIAN LETTER TURNED GAN;Lo;0;L;;;;;N;;;;;
-10FA;GEORGIAN LETTER AIN;Lo;0;L;;;;;N;;;;;
+10D0;GEORGIAN LETTER AN;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER AN;;1C90;;10D0
+10D1;GEORGIAN LETTER BAN;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER BAN;;1C91;;10D1
+10D2;GEORGIAN LETTER GAN;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER GAN;;1C92;;10D2
+10D3;GEORGIAN LETTER DON;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER DON;;1C93;;10D3
+10D4;GEORGIAN LETTER EN;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER EN;;1C94;;10D4
+10D5;GEORGIAN LETTER VIN;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER VIN;;1C95;;10D5
+10D6;GEORGIAN LETTER ZEN;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER ZEN;;1C96;;10D6
+10D7;GEORGIAN LETTER TAN;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER TAN;;1C97;;10D7
+10D8;GEORGIAN LETTER IN;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER IN;;1C98;;10D8
+10D9;GEORGIAN LETTER KAN;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER KAN;;1C99;;10D9
+10DA;GEORGIAN LETTER LAS;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER LAS;;1C9A;;10DA
+10DB;GEORGIAN LETTER MAN;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER MAN;;1C9B;;10DB
+10DC;GEORGIAN LETTER NAR;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER NAR;;1C9C;;10DC
+10DD;GEORGIAN LETTER ON;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER ON;;1C9D;;10DD
+10DE;GEORGIAN LETTER PAR;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER PAR;;1C9E;;10DE
+10DF;GEORGIAN LETTER ZHAR;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER ZHAR;;1C9F;;10DF
+10E0;GEORGIAN LETTER RAE;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER RAE;;1CA0;;10E0
+10E1;GEORGIAN LETTER SAN;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER SAN;;1CA1;;10E1
+10E2;GEORGIAN LETTER TAR;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER TAR;;1CA2;;10E2
+10E3;GEORGIAN LETTER UN;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER UN;;1CA3;;10E3
+10E4;GEORGIAN LETTER PHAR;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER PHAR;;1CA4;;10E4
+10E5;GEORGIAN LETTER KHAR;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER KHAR;;1CA5;;10E5
+10E6;GEORGIAN LETTER GHAN;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER GHAN;;1CA6;;10E6
+10E7;GEORGIAN LETTER QAR;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER QAR;;1CA7;;10E7
+10E8;GEORGIAN LETTER SHIN;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER SHIN;;1CA8;;10E8
+10E9;GEORGIAN LETTER CHIN;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER CHIN;;1CA9;;10E9
+10EA;GEORGIAN LETTER CAN;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER CAN;;1CAA;;10EA
+10EB;GEORGIAN LETTER JIL;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER JIL;;1CAB;;10EB
+10EC;GEORGIAN LETTER CIL;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER CIL;;1CAC;;10EC
+10ED;GEORGIAN LETTER CHAR;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER CHAR;;1CAD;;10ED
+10EE;GEORGIAN LETTER XAN;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER XAN;;1CAE;;10EE
+10EF;GEORGIAN LETTER JHAN;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER JHAN;;1CAF;;10EF
+10F0;GEORGIAN LETTER HAE;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER HAE;;1CB0;;10F0
+10F1;GEORGIAN LETTER HE;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER HE;;1CB1;;10F1
+10F2;GEORGIAN LETTER HIE;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER HIE;;1CB2;;10F2
+10F3;GEORGIAN LETTER WE;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER WE;;1CB3;;10F3
+10F4;GEORGIAN LETTER HAR;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER HAR;;1CB4;;10F4
+10F5;GEORGIAN LETTER HOE;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER HOE;;1CB5;;10F5
+10F6;GEORGIAN LETTER FI;Ll;0;L;;;;;N;GEORGIAN SMALL LETTER FI;;1CB6;;10F6
+10F7;GEORGIAN LETTER YN;Ll;0;L;;;;;N;;;1CB7;;10F7
+10F8;GEORGIAN LETTER ELIFI;Ll;0;L;;;;;N;;;1CB8;;10F8
+10F9;GEORGIAN LETTER TURNED GAN;Ll;0;L;;;;;N;;;1CB9;;10F9
+10FA;GEORGIAN LETTER AIN;Ll;0;L;;;;;N;;;1CBA;;10FA
 10FB;GEORGIAN PARAGRAPH SEPARATOR;Po;0;L;;;;;N;;;;;
 10FC;MODIFIER LETTER GEORGIAN NAR;Lm;0;L;<super> 10DC;;;;N;;;;;
-10FD;GEORGIAN LETTER AEN;Lo;0;L;;;;;N;;;;;
-10FE;GEORGIAN LETTER HARD SIGN;Lo;0;L;;;;;N;;;;;
-10FF;GEORGIAN LETTER LABIAL SIGN;Lo;0;L;;;;;N;;;;;
+10FD;GEORGIAN LETTER AEN;Ll;0;L;;;;;N;;;1CBD;;10FD
+10FE;GEORGIAN LETTER HARD SIGN;Ll;0;L;;;;;N;;;1CBE;;10FE
+10FF;GEORGIAN LETTER LABIAL SIGN;Ll;0;L;;;;;N;;;1CBF;;10FF
 1100;HANGUL CHOSEONG KIYEOK;Lo;0;L;;;;;N;;;;;
 1101;HANGUL CHOSEONG SSANGKIYEOK;Lo;0;L;;;;;N;;;;;
 1102;HANGUL CHOSEONG NIEUN;Lo;0;L;;;;;N;;;;;
@@ -5513,6 +5524,7 @@
 1875;MONGOLIAN LETTER MANCHU RA;Lo;0;L;;;;;N;;;;;
 1876;MONGOLIAN LETTER MANCHU FA;Lo;0;L;;;;;N;;;;;
 1877;MONGOLIAN LETTER MANCHU ZHA;Lo;0;L;;;;;N;;;;;
+1878;MONGOLIAN LETTER CHA WITH TWO DOTS;Lo;0;L;;;;;N;;;;;
 1880;MONGOLIAN LETTER ALI GALI ANUSVARA ONE;Lo;0;L;;;;;N;;;;;
 1881;MONGOLIAN LETTER ALI GALI VISARGA ONE;Lo;0;L;;;;;N;;;;;
 1882;MONGOLIAN LETTER ALI GALI DAMARU;Lo;0;L;;;;;N;;;;;
@@ -6388,6 +6400,52 @@
 1C86;CYRILLIC SMALL LETTER TALL HARD SIGN;Ll;0;L;;;;;N;;;042A;;042A
 1C87;CYRILLIC SMALL LETTER TALL YAT;Ll;0;L;;;;;N;;;0462;;0462
 1C88;CYRILLIC SMALL LETTER UNBLENDED UK;Ll;0;L;;;;;N;;;A64A;;A64A
+1C90;GEORGIAN MTAVRULI CAPITAL LETTER AN;Lu;0;L;;;;;N;;;;10D0;
+1C91;GEORGIAN MTAVRULI CAPITAL LETTER BAN;Lu;0;L;;;;;N;;;;10D1;
+1C92;GEORGIAN MTAVRULI CAPITAL LETTER GAN;Lu;0;L;;;;;N;;;;10D2;
+1C93;GEORGIAN MTAVRULI CAPITAL LETTER DON;Lu;0;L;;;;;N;;;;10D3;
+1C94;GEORGIAN MTAVRULI CAPITAL LETTER EN;Lu;0;L;;;;;N;;;;10D4;
+1C95;GEORGIAN MTAVRULI CAPITAL LETTER VIN;Lu;0;L;;;;;N;;;;10D5;
+1C96;GEORGIAN MTAVRULI CAPITAL LETTER ZEN;Lu;0;L;;;;;N;;;;10D6;
+1C97;GEORGIAN MTAVRULI CAPITAL LETTER TAN;Lu;0;L;;;;;N;;;;10D7;
+1C98;GEORGIAN MTAVRULI CAPITAL LETTER IN;Lu;0;L;;;;;N;;;;10D8;
+1C99;GEORGIAN MTAVRULI CAPITAL LETTER KAN;Lu;0;L;;;;;N;;;;10D9;
+1C9A;GEORGIAN MTAVRULI CAPITAL LETTER LAS;Lu;0;L;;;;;N;;;;10DA;
+1C9B;GEORGIAN MTAVRULI CAPITAL LETTER MAN;Lu;0;L;;;;;N;;;;10DB;
+1C9C;GEORGIAN MTAVRULI CAPITAL LETTER NAR;Lu;0;L;;;;;N;;;;10DC;
+1C9D;GEORGIAN MTAVRULI CAPITAL LETTER ON;Lu;0;L;;;;;N;;;;10DD;
+1C9E;GEORGIAN MTAVRULI CAPITAL LETTER PAR;Lu;0;L;;;;;N;;;;10DE;
+1C9F;GEORGIAN MTAVRULI CAPITAL LETTER ZHAR;Lu;0;L;;;;;N;;;;10DF;
+1CA0;GEORGIAN MTAVRULI CAPITAL LETTER RAE;Lu;0;L;;;;;N;;;;10E0;
+1CA1;GEORGIAN MTAVRULI CAPITAL LETTER SAN;Lu;0;L;;;;;N;;;;10E1;
+1CA2;GEORGIAN MTAVRULI CAPITAL LETTER TAR;Lu;0;L;;;;;N;;;;10E2;
+1CA3;GEORGIAN MTAVRULI CAPITAL LETTER UN;Lu;0;L;;;;;N;;;;10E3;
+1CA4;GEORGIAN MTAVRULI CAPITAL LETTER PHAR;Lu;0;L;;;;;N;;;;10E4;
+1CA5;GEORGIAN MTAVRULI CAPITAL LETTER KHAR;Lu;0;L;;;;;N;;;;10E5;
+1CA6;GEORGIAN MTAVRULI CAPITAL LETTER GHAN;Lu;0;L;;;;;N;;;;10E6;
+1CA7;GEORGIAN MTAVRULI CAPITAL LETTER QAR;Lu;0;L;;;;;N;;;;10E7;
+1CA8;GEORGIAN MTAVRULI CAPITAL LETTER SHIN;Lu;0;L;;;;;N;;;;10E8;
+1CA9;GEORGIAN MTAVRULI CAPITAL LETTER CHIN;Lu;0;L;;;;;N;;;;10E9;
+1CAA;GEORGIAN MTAVRULI CAPITAL LETTER CAN;Lu;0;L;;;;;N;;;;10EA;
+1CAB;GEORGIAN MTAVRULI CAPITAL LETTER JIL;Lu;0;L;;;;;N;;;;10EB;
+1CAC;GEORGIAN MTAVRULI CAPITAL LETTER CIL;Lu;0;L;;;;;N;;;;10EC;
+1CAD;GEORGIAN MTAVRULI CAPITAL LETTER CHAR;Lu;0;L;;;;;N;;;;10ED;
+1CAE;GEORGIAN MTAVRULI CAPITAL LETTER XAN;Lu;0;L;;;;;N;;;;10EE;
+1CAF;GEORGIAN MTAVRULI CAPITAL LETTER JHAN;Lu;0;L;;;;;N;;;;10EF;
+1CB0;GEORGIAN MTAVRULI CAPITAL LETTER HAE;Lu;0;L;;;;;N;;;;10F0;
+1CB1;GEORGIAN MTAVRULI CAPITAL LETTER HE;Lu;0;L;;;;;N;;;;10F1;
+1CB2;GEORGIAN MTAVRULI CAPITAL LETTER HIE;Lu;0;L;;;;;N;;;;10F2;
+1CB3;GEORGIAN MTAVRULI CAPITAL LETTER WE;Lu;0;L;;;;;N;;;;10F3;
+1CB4;GEORGIAN MTAVRULI CAPITAL LETTER HAR;Lu;0;L;;;;;N;;;;10F4;
+1CB5;GEORGIAN MTAVRULI CAPITAL LETTER HOE;Lu;0;L;;;;;N;;;;10F5;
+1CB6;GEORGIAN MTAVRULI CAPITAL LETTER FI;Lu;0;L;;;;;N;;;;10F6;
+1CB7;GEORGIAN MTAVRULI CAPITAL LETTER YN;Lu;0;L;;;;;N;;;;10F7;
+1CB8;GEORGIAN MTAVRULI CAPITAL LETTER ELIFI;Lu;0;L;;;;;N;;;;10F8;
+1CB9;GEORGIAN MTAVRULI CAPITAL LETTER TURNED GAN;Lu;0;L;;;;;N;;;;10F9;
+1CBA;GEORGIAN MTAVRULI CAPITAL LETTER AIN;Lu;0;L;;;;;N;;;;10FA;
+1CBD;GEORGIAN MTAVRULI CAPITAL LETTER AEN;Lu;0;L;;;;;N;;;;10FD;
+1CBE;GEORGIAN MTAVRULI CAPITAL LETTER HARD SIGN;Lu;0;L;;;;;N;;;;10FE;
+1CBF;GEORGIAN MTAVRULI CAPITAL LETTER LABIAL SIGN;Lu;0;L;;;;;N;;;;10FF;
 1CC0;SUNDANESE PUNCTUATION BINDU SURYA;Po;0;L;;;;;N;;;;;
 1CC1;SUNDANESE PUNCTUATION BINDU PANGLONG;Po;0;L;;;;;N;;;;;
 1CC2;SUNDANESE PUNCTUATION BINDU PURNAMA;Po;0;L;;;;;N;;;;;
@@ -9559,7 +9617,7 @@
 299E;ANGLE WITH S INSIDE;Sm;0;ON;;;;;Y;;;;;
 299F;ACUTE ANGLE;Sm;0;ON;;;;;Y;;;;;
 29A0;SPHERICAL ANGLE OPENING LEFT;Sm;0;ON;;;;;Y;;;;;
-29A1;SPHERICAL ANGLE OPENING UP;Sm;0;ON;;;;;Y;;;;;
+29A1;SPHERICAL ANGLE OPENING UP;Sm;0;ON;;;;;N;;;;;
 29A2;TURNED ANGLE;Sm;0;ON;;;;;Y;;;;;
 29A3;REVERSED ANGLE;Sm;0;ON;;;;;Y;;;;;
 29A4;ANGLE WITH UNDERBAR;Sm;0;ON;;;;;Y;;;;;
@@ -10092,6 +10150,9 @@
 2BB7;RIBBON ARROW RIGHT DOWN;So;0;ON;;;;;N;;;;;
 2BB8;UPWARDS WHITE ARROW FROM BAR WITH HORIZONTAL BAR;So;0;ON;;;;;N;;;;;
 2BB9;UP ARROWHEAD IN A RECTANGLE BOX;So;0;ON;;;;;N;;;;;
+2BBA;OVERLAPPING WHITE SQUARES;So;0;ON;;;;;N;;;;;
+2BBB;OVERLAPPING WHITE AND BLACK SQUARES;So;0;ON;;;;;N;;;;;
+2BBC;OVERLAPPING BLACK SQUARES;So;0;ON;;;;;N;;;;;
 2BBD;BALLOT BOX WITH LIGHT X;So;0;ON;;;;;N;;;;;
 2BBE;CIRCLED X;So;0;ON;;;;;N;;;;;
 2BBF;CIRCLED BOLD X;So;0;ON;;;;;N;;;;;
@@ -10113,10 +10174,50 @@
 2BD0;SQUARE POSITION INDICATOR;So;0;ON;;;;;N;;;;;
 2BD1;UNCERTAINTY SIGN;So;0;ON;;;;;N;;;;;
 2BD2;GROUP MARK;So;0;ON;;;;;N;;;;;
+2BD3;PLUTO FORM TWO;So;0;ON;;;;;N;;;;;
+2BD4;PLUTO FORM THREE;So;0;ON;;;;;N;;;;;
+2BD5;PLUTO FORM FOUR;So;0;ON;;;;;N;;;;;
+2BD6;PLUTO FORM FIVE;So;0;ON;;;;;N;;;;;
+2BD7;TRANSPLUTO;So;0;ON;;;;;N;;;;;
+2BD8;PROSERPINA;So;0;ON;;;;;N;;;;;
+2BD9;ASTRAEA;So;0;ON;;;;;N;;;;;
+2BDA;HYGIEA;So;0;ON;;;;;N;;;;;
+2BDB;PHOLUS;So;0;ON;;;;;N;;;;;
+2BDC;NESSUS;So;0;ON;;;;;N;;;;;
+2BDD;WHITE MOON SELENA;So;0;ON;;;;;N;;;;;
+2BDE;BLACK DIAMOND ON CROSS;So;0;ON;;;;;N;;;;;
+2BDF;TRUE LIGHT MOON ARTA;So;0;ON;;;;;N;;;;;
+2BE0;CUPIDO;So;0;ON;;;;;N;;;;;
+2BE1;HADES;So;0;ON;;;;;N;;;;;
+2BE2;ZEUS;So;0;ON;;;;;N;;;;;
+2BE3;KRONOS;So;0;ON;;;;;N;;;;;
+2BE4;APOLLON;So;0;ON;;;;;N;;;;;
+2BE5;ADMETOS;So;0;ON;;;;;N;;;;;
+2BE6;VULCANUS;So;0;ON;;;;;N;;;;;
+2BE7;POSEIDON;So;0;ON;;;;;N;;;;;
+2BE8;LEFT HALF BLACK STAR;So;0;ON;;;;;N;;;;;
+2BE9;RIGHT HALF BLACK STAR;So;0;ON;;;;;N;;;;;
+2BEA;STAR WITH LEFT HALF BLACK;So;0;ON;;;;;N;;;;;
+2BEB;STAR WITH RIGHT HALF BLACK;So;0;ON;;;;;N;;;;;
 2BEC;LEFTWARDS TWO-HEADED ARROW WITH TRIANGLE ARROWHEADS;So;0;ON;;;;;N;;;;;
 2BED;UPWARDS TWO-HEADED ARROW WITH TRIANGLE ARROWHEADS;So;0;ON;;;;;N;;;;;
 2BEE;RIGHTWARDS TWO-HEADED ARROW WITH TRIANGLE ARROWHEADS;So;0;ON;;;;;N;;;;;
 2BEF;DOWNWARDS TWO-HEADED ARROW WITH TRIANGLE ARROWHEADS;So;0;ON;;;;;N;;;;;
+2BF0;ERIS FORM ONE;So;0;ON;;;;;N;;;;;
+2BF1;ERIS FORM TWO;So;0;ON;;;;;N;;;;;
+2BF2;SEDNA;So;0;ON;;;;;N;;;;;
+2BF3;RUSSIAN ASTROLOGICAL SYMBOL VIGINTILE;So;0;ON;;;;;N;;;;;
+2BF4;RUSSIAN ASTROLOGICAL SYMBOL NOVILE;So;0;ON;;;;;N;;;;;
+2BF5;RUSSIAN ASTROLOGICAL SYMBOL QUINTILE;So;0;ON;;;;;N;;;;;
+2BF6;RUSSIAN ASTROLOGICAL SYMBOL BINOVILE;So;0;ON;;;;;N;;;;;
+2BF7;RUSSIAN ASTROLOGICAL SYMBOL SENTAGON;So;0;ON;;;;;N;;;;;
+2BF8;RUSSIAN ASTROLOGICAL SYMBOL TREDECILE;So;0;ON;;;;;N;;;;;
+2BF9;EQUALS SIGN WITH INFINITY BELOW;So;0;ON;;;;;N;;;;;
+2BFA;UNITED SYMBOL;So;0;ON;;;;;N;;;;;
+2BFB;SEPARATED SYMBOL;So;0;ON;;;;;N;;;;;
+2BFC;DOUBLED SYMBOL;So;0;ON;;;;;N;;;;;
+2BFD;PASSED SYMBOL;So;0;ON;;;;;N;;;;;
+2BFE;REVERSED RIGHT ANGLE;So;0;ON;;;;;Y;;;;;
 2C00;GLAGOLITIC CAPITAL LETTER AZU;Lu;0;L;;;;;N;;;;2C30;
 2C01;GLAGOLITIC CAPITAL LETTER BUKY;Lu;0;L;;;;;N;;;;2C31;
 2C02;GLAGOLITIC CAPITAL LETTER VEDE;Lu;0;L;;;;;N;;;;2C32;
@@ -10650,6 +10751,11 @@
 2E47;LOW KAVYKA;Po;0;ON;;;;;N;;;;;
 2E48;LOW KAVYKA WITH DOT;Po;0;ON;;;;;N;;;;;
 2E49;DOUBLE STACKED COMMA;Po;0;ON;;;;;N;;;;;
+2E4A;DOTTED SOLIDUS;Po;0;ON;;;;;N;;;;;
+2E4B;TRIPLE DAGGER;Po;0;ON;;;;;N;;;;;
+2E4C;MEDIEVAL COMMA;Po;0;ON;;;;;N;;;;;
+2E4D;PARAGRAPHUS MARK;Po;0;ON;;;;;N;;;;;
+2E4E;PUNCTUS ELEVATUS MARK;Po;0;ON;;;;;N;;;;;
 2E80;CJK RADICAL REPEAT;So;0;ON;;;;;N;;;;;
 2E81;CJK RADICAL CLIFF;So;0;ON;;;;;N;;;;;
 2E82;CJK RADICAL SECOND ONE;So;0;ON;;;;;N;;;;;
@@ -11286,6 +11392,7 @@
 312C;BOPOMOFO LETTER GN;Lo;0;L;;;;;N;;;;;
 312D;BOPOMOFO LETTER IH;Lo;0;L;;;;;N;;;;;
 312E;BOPOMOFO LETTER O WITH DOT ABOVE;Lo;0;L;;;;;N;;;;;
+312F;BOPOMOFO LETTER NN;Lo;0;L;;;;;N;;;;;
 3131;HANGUL LETTER KIYEOK;Lo;0;L;<compat> 1100;;;;N;HANGUL LETTER GIYEOG;;;;
 3132;HANGUL LETTER SSANGKIYEOK;Lo;0;L;<compat> 1101;;;;N;HANGUL LETTER SSANG GIYEOG;;;;
 3133;HANGUL LETTER KIYEOK-SIOS;Lo;0;L;<compat> 11AA;;;;N;HANGUL LETTER GIYEOG SIOS;;;;
@@ -12052,7 +12159,7 @@
 4DFE;HEXAGRAM FOR AFTER COMPLETION;So;0;ON;;;;;N;;;;;
 4DFF;HEXAGRAM FOR BEFORE COMPLETION;So;0;ON;;;;;N;;;;;
 4E00;<CJK Ideograph, First>;Lo;0;L;;;;;N;;;;;
-9FEA;<CJK Ideograph, Last>;Lo;0;L;;;;;N;;;;;
+9FEF;<CJK Ideograph, Last>;Lo;0;L;;;;;N;;;;;
 A000;YI SYLLABLE IT;Lo;0;L;;;;;N;;;;;
 A001;YI SYLLABLE IX;Lo;0;L;;;;;N;;;;;
 A002;YI SYLLABLE I;Lo;0;L;;;;;N;;;;;
@@ -13980,6 +14087,7 @@ A7AB;LATIN CAPITAL LETTER REVERSED OPEN E;Lu;0;L;;;;;N;;;;025C;
 A7AC;LATIN CAPITAL LETTER SCRIPT G;Lu;0;L;;;;;N;;;;0261;
 A7AD;LATIN CAPITAL LETTER L WITH BELT;Lu;0;L;;;;;N;;;;026C;
 A7AE;LATIN CAPITAL LETTER SMALL CAPITAL I;Lu;0;L;;;;;N;;;;026A;
+A7AF;LATIN LETTER SMALL CAPITAL Q;Ll;0;L;;;;;N;;;;;
 A7B0;LATIN CAPITAL LETTER TURNED K;Lu;0;L;;;;;N;;;;029E;
 A7B1;LATIN CAPITAL LETTER TURNED T;Lu;0;L;;;;;N;;;;0287;
 A7B2;LATIN CAPITAL LETTER J WITH CROSSED-TAIL;Lu;0;L;;;;;N;;;;029D;
@@ -13988,6 +14096,8 @@ A7B4;LATIN CAPITAL LETTER BETA;Lu;0;L;;;;;N;;;;A7B5;
 A7B5;LATIN SMALL LETTER BETA;Ll;0;L;;;;;N;;;A7B4;;A7B4
 A7B6;LATIN CAPITAL LETTER OMEGA;Lu;0;L;;;;;N;;;;A7B7;
 A7B7;LATIN SMALL LETTER OMEGA;Ll;0;L;;;;;N;;;A7B6;;A7B6
+A7B8;LATIN CAPITAL LETTER U WITH STROKE;Lu;0;L;;;;;N;;;;A7B9;
+A7B9;LATIN SMALL LETTER U WITH STROKE;Ll;0;L;;;;;N;;;A7B8;;A7B8
 A7F7;LATIN EPIGRAPHIC LETTER SIDEWAYS I;Lo;0;L;;;;;N;;;;;
 A7F8;MODIFIER LETTER CAPITAL H WITH STROKE;Lm;0;L;<super> 0126;;;;N;;;;;
 A7F9;MODIFIER LETTER SMALL LIGATURE OE;Lm;0;L;<super> 0153;;;;N;;;;;
@@ -14219,6 +14329,8 @@ A8FA;DEVANAGARI CARET;Po;0;L;;;;;N;;;;;
 A8FB;DEVANAGARI HEADSTROKE;Lo;0;L;;;;;N;;;;;
 A8FC;DEVANAGARI SIGN SIDDHAM;Po;0;L;;;;;N;;;;;
 A8FD;DEVANAGARI JAIN OM;Lo;0;L;;;;;N;;;;;
+A8FE;DEVANAGARI LETTER AY;Lo;0;L;;;;;N;;;;;
+A8FF;DEVANAGARI VOWEL SIGN AY;Mn;0;NSM;;;;;N;;;;;
 A900;KAYAH LI DIGIT ZERO;Nd;0;L;;0;0;0;N;;;;;
 A901;KAYAH LI DIGIT ONE;Nd;0;L;;1;1;1;N;;;;;
 A902;KAYAH LI DIGIT TWO;Nd;0;L;;2;2;2;N;;;;;
@@ -18363,6 +18475,8 @@ FFFD;REPLACEMENT CHARACTER;So;0;ON;;;;;N;;;;;
 10A31;KHAROSHTHI LETTER HA;Lo;0;R;;;;;N;;;;;
 10A32;KHAROSHTHI LETTER KKA;Lo;0;R;;;;;N;;;;;
 10A33;KHAROSHTHI LETTER TTTHA;Lo;0;R;;;;;N;;;;;
+10A34;KHAROSHTHI LETTER TTTA;Lo;0;R;;;;;N;;;;;
+10A35;KHAROSHTHI LETTER VHA;Lo;0;R;;;;;N;;;;;
 10A38;KHAROSHTHI SIGN BAR ABOVE;Mn;230;NSM;;;;;N;;;;;
 10A39;KHAROSHTHI SIGN CAUDA;Mn;1;NSM;;;;;N;;;;;
 10A3A;KHAROSHTHI SIGN DOT BELOW;Mn;220;NSM;;;;;N;;;;;
@@ -18375,6 +18489,7 @@ FFFD;REPLACEMENT CHARACTER;So;0;ON;;;;;N;;;;;
 10A45;KHAROSHTHI NUMBER TWENTY;No;0;R;;;;20;N;;;;;
 10A46;KHAROSHTHI NUMBER ONE HUNDRED;No;0;R;;;;100;N;;;;;
 10A47;KHAROSHTHI NUMBER ONE THOUSAND;No;0;R;;;;1000;N;;;;;
+10A48;KHAROSHTHI FRACTION ONE HALF;No;0;R;;;;1/2;N;;;;;
 10A50;KHAROSHTHI PUNCTUATION DOT;Po;0;R;;;;;N;;;;;
 10A51;KHAROSHTHI PUNCTUATION SMALL CIRCLE;Po;0;R;;;;;N;;;;;
 10A52;KHAROSHTHI PUNCTUATION CIRCLE;Po;0;R;;;;;N;;;;;
@@ -18827,6 +18942,56 @@ FFFD;REPLACEMENT CHARACTER;So;0;ON;;;;;N;;;;;
 10CFD;OLD HUNGARIAN NUMBER FIFTY;No;0;R;;;;50;N;;;;;
 10CFE;OLD HUNGARIAN NUMBER ONE HUNDRED;No;0;R;;;;100;N;;;;;
 10CFF;OLD HUNGARIAN NUMBER ONE THOUSAND;No;0;R;;;;1000;N;;;;;
+10D00;HANIFI ROHINGYA LETTER A;Lo;0;AL;;;;;N;;;;;
+10D01;HANIFI ROHINGYA LETTER BA;Lo;0;AL;;;;;N;;;;;
+10D02;HANIFI ROHINGYA LETTER PA;Lo;0;AL;;;;;N;;;;;
+10D03;HANIFI ROHINGYA LETTER TA;Lo;0;AL;;;;;N;;;;;
+10D04;HANIFI ROHINGYA LETTER TTA;Lo;0;AL;;;;;N;;;;;
+10D05;HANIFI ROHINGYA LETTER JA;Lo;0;AL;;;;;N;;;;;
+10D06;HANIFI ROHINGYA LETTER CA;Lo;0;AL;;;;;N;;;;;
+10D07;HANIFI ROHINGYA LETTER HA;Lo;0;AL;;;;;N;;;;;
+10D08;HANIFI ROHINGYA LETTER KHA;Lo;0;AL;;;;;N;;;;;
+10D09;HANIFI ROHINGYA LETTER FA;Lo;0;AL;;;;;N;;;;;
+10D0A;HANIFI ROHINGYA LETTER DA;Lo;0;AL;;;;;N;;;;;
+10D0B;HANIFI ROHINGYA LETTER DDA;Lo;0;AL;;;;;N;;;;;
+10D0C;HANIFI ROHINGYA LETTER RA;Lo;0;AL;;;;;N;;;;;
+10D0D;HANIFI ROHINGYA LETTER RRA;Lo;0;AL;;;;;N;;;;;
+10D0E;HANIFI ROHINGYA LETTER ZA;Lo;0;AL;;;;;N;;;;;
+10D0F;HANIFI ROHINGYA LETTER SA;Lo;0;AL;;;;;N;;;;;
+10D10;HANIFI ROHINGYA LETTER SHA;Lo;0;AL;;;;;N;;;;;
+10D11;HANIFI ROHINGYA LETTER KA;Lo;0;AL;;;;;N;;;;;
+10D12;HANIFI ROHINGYA LETTER GA;Lo;0;AL;;;;;N;;;;;
+10D13;HANIFI ROHINGYA LETTER LA;Lo;0;AL;;;;;N;;;;;
+10D14;HANIFI ROHINGYA LETTER MA;Lo;0;AL;;;;;N;;;;;
+10D15;HANIFI ROHINGYA LETTER NA;Lo;0;AL;;;;;N;;;;;
+10D16;HANIFI ROHINGYA LETTER WA;Lo;0;AL;;;;;N;;;;;
+10D17;HANIFI ROHINGYA LETTER KINNA WA;Lo;0;AL;;;;;N;;;;;
+10D18;HANIFI ROHINGYA LETTER YA;Lo;0;AL;;;;;N;;;;;
+10D19;HANIFI ROHINGYA LETTER KINNA YA;Lo;0;AL;;;;;N;;;;;
+10D1A;HANIFI ROHINGYA LETTER NGA;Lo;0;AL;;;;;N;;;;;
+10D1B;HANIFI ROHINGYA LETTER NYA;Lo;0;AL;;;;;N;;;;;
+10D1C;HANIFI ROHINGYA LETTER VA;Lo;0;AL;;;;;N;;;;;
+10D1D;HANIFI ROHINGYA VOWEL A;Lo;0;AL;;;;;N;;;;;
+10D1E;HANIFI ROHINGYA VOWEL I;Lo;0;AL;;;;;N;;;;;
+10D1F;HANIFI ROHINGYA VOWEL U;Lo;0;AL;;;;;N;;;;;
+10D20;HANIFI ROHINGYA VOWEL E;Lo;0;AL;;;;;N;;;;;
+10D21;HANIFI ROHINGYA VOWEL O;Lo;0;AL;;;;;N;;;;;
+10D22;HANIFI ROHINGYA MARK SAKIN;Lo;0;AL;;;;;N;;;;;
+10D23;HANIFI ROHINGYA MARK NA KHONNA;Lo;0;AL;;;;;N;;;;;
+10D24;HANIFI ROHINGYA SIGN HARBAHAY;Mn;230;NSM;;;;;N;;;;;
+10D25;HANIFI ROHINGYA SIGN TAHALA;Mn;230;NSM;;;;;N;;;;;
+10D26;HANIFI ROHINGYA SIGN TANA;Mn;230;NSM;;;;;N;;;;;
+10D27;HANIFI ROHINGYA SIGN TASSI;Mn;230;NSM;;;;;N;;;;;
+10D30;HANIFI ROHINGYA DIGIT ZERO;Nd;0;AN;;0;0;0;N;;;;;
+10D31;HANIFI ROHINGYA DIGIT ONE;Nd;0;AN;;1;1;1;N;;;;;
+10D32;HANIFI ROHINGYA DIGIT TWO;Nd;0;AN;;2;2;2;N;;;;;
+10D33;HANIFI ROHINGYA DIGIT THREE;Nd;0;AN;;3;3;3;N;;;;;
+10D34;HANIFI ROHINGYA DIGIT FOUR;Nd;0;AN;;4;4;4;N;;;;;
+10D35;HANIFI ROHINGYA DIGIT FIVE;Nd;0;AN;;5;5;5;N;;;;;
+10D36;HANIFI ROHINGYA DIGIT SIX;Nd;0;AN;;6;6;6;N;;;;;
+10D37;HANIFI ROHINGYA DIGIT SEVEN;Nd;0;AN;;7;7;7;N;;;;;
+10D38;HANIFI ROHINGYA DIGIT EIGHT;Nd;0;AN;;8;8;8;N;;;;;
+10D39;HANIFI ROHINGYA DIGIT NINE;Nd;0;AN;;9;9;9;N;;;;;
 10E60;RUMI DIGIT ONE;No;0;AN;;;1;1;N;;;;;
 10E61;RUMI DIGIT TWO;No;0;AN;;;2;2;N;;;;;
 10E62;RUMI DIGIT THREE;No;0;AN;;;3;3;N;;;;;
@@ -18858,6 +19023,88 @@ FFFD;REPLACEMENT CHARACTER;So;0;ON;;;;;N;;;;;
 10E7C;RUMI FRACTION ONE QUARTER;No;0;AN;;;;1/4;N;;;;;
 10E7D;RUMI FRACTION ONE THIRD;No;0;AN;;;;1/3;N;;;;;
 10E7E;RUMI FRACTION TWO THIRDS;No;0;AN;;;;2/3;N;;;;;
+10F00;OLD SOGDIAN LETTER ALEPH;Lo;0;R;;;;;N;;;;;
+10F01;OLD SOGDIAN LETTER FINAL ALEPH;Lo;0;R;;;;;N;;;;;
+10F02;OLD SOGDIAN LETTER BETH;Lo;0;R;;;;;N;;;;;
+10F03;OLD SOGDIAN LETTER FINAL BETH;Lo;0;R;;;;;N;;;;;
+10F04;OLD SOGDIAN LETTER GIMEL;Lo;0;R;;;;;N;;;;;
+10F05;OLD SOGDIAN LETTER HE;Lo;0;R;;;;;N;;;;;
+10F06;OLD SOGDIAN LETTER FINAL HE;Lo;0;R;;;;;N;;;;;
+10F07;OLD SOGDIAN LETTER WAW;Lo;0;R;;;;;N;;;;;
+10F08;OLD SOGDIAN LETTER ZAYIN;Lo;0;R;;;;;N;;;;;
+10F09;OLD SOGDIAN LETTER HETH;Lo;0;R;;;;;N;;;;;
+10F0A;OLD SOGDIAN LETTER YODH;Lo;0;R;;;;;N;;;;;
+10F0B;OLD SOGDIAN LETTER KAPH;Lo;0;R;;;;;N;;;;;
+10F0C;OLD SOGDIAN LETTER LAMEDH;Lo;0;R;;;;;N;;;;;
+10F0D;OLD SOGDIAN LETTER MEM;Lo;0;R;;;;;N;;;;;
+10F0E;OLD SOGDIAN LETTER NUN;Lo;0;R;;;;;N;;;;;
+10F0F;OLD SOGDIAN LETTER FINAL NUN;Lo;0;R;;;;;N;;;;;
+10F10;OLD SOGDIAN LETTER FINAL NUN WITH VERTICAL TAIL;Lo;0;R;;;;;N;;;;;
+10F11;OLD SOGDIAN LETTER SAMEKH;Lo;0;R;;;;;N;;;;;
+10F12;OLD SOGDIAN LETTER AYIN;Lo;0;R;;;;;N;;;;;
+10F13;OLD SOGDIAN LETTER ALTERNATE AYIN;Lo;0;R;;;;;N;;;;;
+10F14;OLD SOGDIAN LETTER PE;Lo;0;R;;;;;N;;;;;
+10F15;OLD SOGDIAN LETTER SADHE;Lo;0;R;;;;;N;;;;;
+10F16;OLD SOGDIAN LETTER FINAL SADHE;Lo;0;R;;;;;N;;;;;
+10F17;OLD SOGDIAN LETTER FINAL SADHE WITH VERTICAL TAIL;Lo;0;R;;;;;N;;;;;
+10F18;OLD SOGDIAN LETTER RESH-AYIN-DALETH;Lo;0;R;;;;;N;;;;;
+10F19;OLD SOGDIAN LETTER SHIN;Lo;0;R;;;;;N;;;;;
+10F1A;OLD SOGDIAN LETTER TAW;Lo;0;R;;;;;N;;;;;
+10F1B;OLD SOGDIAN LETTER FINAL TAW;Lo;0;R;;;;;N;;;;;
+10F1C;OLD SOGDIAN LETTER FINAL TAW WITH VERTICAL TAIL;Lo;0;R;;;;;N;;;;;
+10F1D;OLD SOGDIAN NUMBER ONE;No;0;R;;;;1;N;;;;;
+10F1E;OLD SOGDIAN NUMBER TWO;No;0;R;;;;2;N;;;;;
+10F1F;OLD SOGDIAN NUMBER THREE;No;0;R;;;;3;N;;;;;
+10F20;OLD SOGDIAN NUMBER FOUR;No;0;R;;;;4;N;;;;;
+10F21;OLD SOGDIAN NUMBER FIVE;No;0;R;;;;5;N;;;;;
+10F22;OLD SOGDIAN NUMBER TEN;No;0;R;;;;10;N;;;;;
+10F23;OLD SOGDIAN NUMBER TWENTY;No;0;R;;;;20;N;;;;;
+10F24;OLD SOGDIAN NUMBER THIRTY;No;0;R;;;;30;N;;;;;
+10F25;OLD SOGDIAN NUMBER ONE HUNDRED;No;0;R;;;;100;N;;;;;
+10F26;OLD SOGDIAN FRACTION ONE HALF;No;0;R;;;;1/2;N;;;;;
+10F27;OLD SOGDIAN LIGATURE AYIN-DALETH;Lo;0;R;;;;;N;;;;;
+10F30;SOGDIAN LETTER ALEPH;Lo;0;AL;;;;;N;;;;;
+10F31;SOGDIAN LETTER BETH;Lo;0;AL;;;;;N;;;;;
+10F32;SOGDIAN LETTER GIMEL;Lo;0;AL;;;;;N;;;;;
+10F33;SOGDIAN LETTER HE;Lo;0;AL;;;;;N;;;;;
+10F34;SOGDIAN LETTER WAW;Lo;0;AL;;;;;N;;;;;
+10F35;SOGDIAN LETTER ZAYIN;Lo;0;AL;;;;;N;;;;;
+10F36;SOGDIAN LETTER HETH;Lo;0;AL;;;;;N;;;;;
+10F37;SOGDIAN LETTER YODH;Lo;0;AL;;;;;N;;;;;
+10F38;SOGDIAN LETTER KAPH;Lo;0;AL;;;;;N;;;;;
+10F39;SOGDIAN LETTER LAMEDH;Lo;0;AL;;;;;N;;;;;
+10F3A;SOGDIAN LETTER MEM;Lo;0;AL;;;;;N;;;;;
+10F3B;SOGDIAN LETTER NUN;Lo;0;AL;;;;;N;;;;;
+10F3C;SOGDIAN LETTER SAMEKH;Lo;0;AL;;;;;N;;;;;
+10F3D;SOGDIAN LETTER AYIN;Lo;0;AL;;;;;N;;;;;
+10F3E;SOGDIAN LETTER PE;Lo;0;AL;;;;;N;;;;;
+10F3F;SOGDIAN LETTER SADHE;Lo;0;AL;;;;;N;;;;;
+10F40;SOGDIAN LETTER RESH-AYIN;Lo;0;AL;;;;;N;;;;;
+10F41;SOGDIAN LETTER SHIN;Lo;0;AL;;;;;N;;;;;
+10F42;SOGDIAN LETTER TAW;Lo;0;AL;;;;;N;;;;;
+10F43;SOGDIAN LETTER FETH;Lo;0;AL;;;;;N;;;;;
+10F44;SOGDIAN LETTER LESH;Lo;0;AL;;;;;N;;;;;
+10F45;SOGDIAN INDEPENDENT SHIN;Lo;0;AL;;;;;N;;;;;
+10F46;SOGDIAN COMBINING DOT BELOW;Mn;220;NSM;;;;;N;;;;;
+10F47;SOGDIAN COMBINING TWO DOTS BELOW;Mn;220;NSM;;;;;N;;;;;
+10F48;SOGDIAN COMBINING DOT ABOVE;Mn;230;NSM;;;;;N;;;;;
+10F49;SOGDIAN COMBINING TWO DOTS ABOVE;Mn;230;NSM;;;;;N;;;;;
+10F4A;SOGDIAN COMBINING CURVE ABOVE;Mn;230;NSM;;;;;N;;;;;
+10F4B;SOGDIAN COMBINING CURVE BELOW;Mn;220;NSM;;;;;N;;;;;
+10F4C;SOGDIAN COMBINING HOOK ABOVE;Mn;230;NSM;;;;;N;;;;;
+10F4D;SOGDIAN COMBINING HOOK BELOW;Mn;220;NSM;;;;;N;;;;;
+10F4E;SOGDIAN COMBINING LONG HOOK BELOW;Mn;220;NSM;;;;;N;;;;;
+10F4F;SOGDIAN COMBINING RESH BELOW;Mn;220;NSM;;;;;N;;;;;
+10F50;SOGDIAN COMBINING STROKE BELOW;Mn;220;NSM;;;;;N;;;;;
+10F51;SOGDIAN NUMBER ONE;No;0;AL;;;;1;N;;;;;
+10F52;SOGDIAN NUMBER TEN;No;0;AL;;;;10;N;;;;;
+10F53;SOGDIAN NUMBER TWENTY;No;0;AL;;;;20;N;;;;;
+10F54;SOGDIAN NUMBER ONE HUNDRED;No;0;AL;;;;100;N;;;;;
+10F55;SOGDIAN PUNCTUATION TWO VERTICAL BARS;Po;0;AL;;;;;N;;;;;
+10F56;SOGDIAN PUNCTUATION TWO VERTICAL BARS WITH DOTS;Po;0;AL;;;;;N;;;;;
+10F57;SOGDIAN PUNCTUATION CIRCLE WITH DOT;Po;0;AL;;;;;N;;;;;
+10F58;SOGDIAN PUNCTUATION TWO CIRCLES WITH DOTS;Po;0;AL;;;;;N;;;;;
+10F59;SOGDIAN PUNCTUATION HALF CIRCLE WITH DOT;Po;0;AL;;;;;N;;;;;
 11000;BRAHMI SIGN CANDRABINDU;Mc;0;L;;;;;N;;;;;
 11001;BRAHMI SIGN ANUSVARA;Mn;0;NSM;;;;;N;;;;;
 11002;BRAHMI SIGN VISARGA;Mc;0;L;;;;;N;;;;;
@@ -19033,6 +19280,7 @@ FFFD;REPLACEMENT CHARACTER;So;0;ON;;;;;N;;;;;
 110BF;KAITHI DOUBLE SECTION MARK;Po;0;L;;;;;N;;;;;
 110C0;KAITHI DANDA;Po;0;L;;;;;N;;;;;
 110C1;KAITHI DOUBLE DANDA;Po;0;L;;;;;N;;;;;
+110CD;KAITHI NUMBER SIGN ABOVE;Cf;0;L;;;;;N;;;;;
 110D0;SORA SOMPENG LETTER SAH;Lo;0;L;;;;;N;;;;;
 110D1;SORA SOMPENG LETTER TAH;Lo;0;L;;;;;N;;;;;
 110D2;SORA SOMPENG LETTER BAH;Lo;0;L;;;;;N;;;;;
@@ -19135,6 +19383,9 @@ FFFD;REPLACEMENT CHARACTER;So;0;ON;;;;;N;;;;;
 11141;CHAKMA DANDA;Po;0;L;;;;;N;;;;;
 11142;CHAKMA DOUBLE DANDA;Po;0;L;;;;;N;;;;;
 11143;CHAKMA QUESTION MARK;Po;0;L;;;;;N;;;;;
+11144;CHAKMA LETTER LHAA;Lo;0;L;;;;;N;;;;;
+11145;CHAKMA VOWEL SIGN AA;Mc;0;L;;;;;N;;;;;
+11146;CHAKMA VOWEL SIGN EI;Mc;0;L;;;;;N;;;;;
 11150;MAHAJANI LETTER A;Lo;0;L;;;;;N;;;;;
 11151;MAHAJANI LETTER I;Lo;0;L;;;;;N;;;;;
 11152;MAHAJANI LETTER U;Lo;0;L;;;;;N;;;;;
@@ -19247,7 +19498,7 @@ FFFD;REPLACEMENT CHARACTER;So;0;ON;;;;;N;;;;;
 111C6;SHARADA DOUBLE DANDA;Po;0;L;;;;;N;;;;;
 111C7;SHARADA ABBREVIATION SIGN;Po;0;L;;;;;N;;;;;
 111C8;SHARADA SEPARATOR;Po;0;L;;;;;N;;;;;
-111C9;SHARADA SANDHI MARK;Po;0;L;;;;;N;;;;;
+111C9;SHARADA SANDHI MARK;Mn;0;NSM;;;;;N;;;;;
 111CA;SHARADA SIGN NUKTA;Mn;7;NSM;;;;;N;;;;;
 111CB;SHARADA VOWEL MODIFIER MARK;Mn;0;NSM;;;;;N;;;;;
 111CC;SHARADA EXTRA SHORT VOWEL MARK;Mn;0;NSM;;;;;N;;;;;
@@ -19507,6 +19758,7 @@ FFFD;REPLACEMENT CHARACTER;So;0;ON;;;;;N;;;;;
 11337;GRANTHA LETTER SSA;Lo;0;L;;;;;N;;;;;
 11338;GRANTHA LETTER SA;Lo;0;L;;;;;N;;;;;
 11339;GRANTHA LETTER HA;Lo;0;L;;;;;N;;;;;
+1133B;COMBINING BINDU BELOW;Mn;7;NSM;;;;;N;;;;;
 1133C;GRANTHA SIGN NUKTA;Mn;7;NSM;;;;;N;;;;;
 1133D;GRANTHA SIGN AVAGRAHA;Lo;0;L;;;;;N;;;;;
 1133E;GRANTHA VOWEL SIGN AA;Mc;0;L;;;;;N;;;;;
@@ -19634,6 +19886,7 @@ FFFD;REPLACEMENT CHARACTER;So;0;ON;;;;;N;;;;;
 11459;NEWA DIGIT NINE;Nd;0;L;;9;9;9;N;;;;;
 1145B;NEWA PLACEHOLDER MARK;Po;0;L;;;;;N;;;;;
 1145D;NEWA INSERTION SIGN;Po;0;L;;;;;N;;;;;
+1145E;NEWA SANDHI MARK;Mn;230;NSM;;;;;N;;;;;
 11480;TIRHUTA ANJI;Lo;0;L;;;;;N;;;;;
 11481;TIRHUTA LETTER A;Lo;0;L;;;;;N;;;;;
 11482;TIRHUTA LETTER AA;Lo;0;L;;;;;N;;;;;
@@ -19992,6 +20245,7 @@ FFFD;REPLACEMENT CHARACTER;So;0;ON;;;;;N;;;;;
 11717;AHOM LETTER GHA;Lo;0;L;;;;;N;;;;;
 11718;AHOM LETTER BHA;Lo;0;L;;;;;N;;;;;
 11719;AHOM LETTER JHA;Lo;0;L;;;;;N;;;;;
+1171A;AHOM LETTER ALTERNATE BA;Lo;0;L;;;;;N;;;;;
 1171D;AHOM CONSONANT SIGN MEDIAL LA;Mn;0;NSM;;;;;N;;;;;
 1171E;AHOM CONSONANT SIGN MEDIAL RA;Mn;0;NSM;;;;;N;;;;;
 1171F;AHOM CONSONANT SIGN MEDIAL LIGATING RA;Mn;0;NSM;;;;;N;;;;;
@@ -20023,6 +20277,66 @@ FFFD;REPLACEMENT CHARACTER;So;0;ON;;;;;N;;;;;
 1173D;AHOM SIGN SECTION;Po;0;L;;;;;N;;;;;
 1173E;AHOM SIGN RULAI;Po;0;L;;;;;N;;;;;
 1173F;AHOM SYMBOL VI;So;0;L;;;;;N;;;;;
+11800;DOGRA LETTER A;Lo;0;L;;;;;N;;;;;
+11801;DOGRA LETTER AA;Lo;0;L;;;;;N;;;;;
+11802;DOGRA LETTER I;Lo;0;L;;;;;N;;;;;
+11803;DOGRA LETTER II;Lo;0;L;;;;;N;;;;;
+11804;DOGRA LETTER U;Lo;0;L;;;;;N;;;;;
+11805;DOGRA LETTER UU;Lo;0;L;;;;;N;;;;;
+11806;DOGRA LETTER E;Lo;0;L;;;;;N;;;;;
+11807;DOGRA LETTER AI;Lo;0;L;;;;;N;;;;;
+11808;DOGRA LETTER O;Lo;0;L;;;;;N;;;;;
+11809;DOGRA LETTER AU;Lo;0;L;;;;;N;;;;;
+1180A;DOGRA LETTER KA;Lo;0;L;;;;;N;;;;;
+1180B;DOGRA LETTER KHA;Lo;0;L;;;;;N;;;;;
+1180C;DOGRA LETTER GA;Lo;0;L;;;;;N;;;;;
+1180D;DOGRA LETTER GHA;Lo;0;L;;;;;N;;;;;
+1180E;DOGRA LETTER NGA;Lo;0;L;;;;;N;;;;;
+1180F;DOGRA LETTER CA;Lo;0;L;;;;;N;;;;;
+11810;DOGRA LETTER CHA;Lo;0;L;;;;;N;;;;;
+11811;DOGRA LETTER JA;Lo;0;L;;;;;N;;;;;
+11812;DOGRA LETTER JHA;Lo;0;L;;;;;N;;;;;
+11813;DOGRA LETTER NYA;Lo;0;L;;;;;N;;;;;
+11814;DOGRA LETTER TTA;Lo;0;L;;;;;N;;;;;
+11815;DOGRA LETTER TTHA;Lo;0;L;;;;;N;;;;;
+11816;DOGRA LETTER DDA;Lo;0;L;;;;;N;;;;;
+11817;DOGRA LETTER DDHA;Lo;0;L;;;;;N;;;;;
+11818;DOGRA LETTER NNA;Lo;0;L;;;;;N;;;;;
+11819;DOGRA LETTER TA;Lo;0;L;;;;;N;;;;;
+1181A;DOGRA LETTER THA;Lo;0;L;;;;;N;;;;;
+1181B;DOGRA LETTER DA;Lo;0;L;;;;;N;;;;;
+1181C;DOGRA LETTER DHA;Lo;0;L;;;;;N;;;;;
+1181D;DOGRA LETTER NA;Lo;0;L;;;;;N;;;;;
+1181E;DOGRA LETTER PA;Lo;0;L;;;;;N;;;;;
+1181F;DOGRA LETTER PHA;Lo;0;L;;;;;N;;;;;
+11820;DOGRA LETTER BA;Lo;0;L;;;;;N;;;;;
+11821;DOGRA LETTER BHA;Lo;0;L;;;;;N;;;;;
+11822;DOGRA LETTER MA;Lo;0;L;;;;;N;;;;;
+11823;DOGRA LETTER YA;Lo;0;L;;;;;N;;;;;
+11824;DOGRA LETTER RA;Lo;0;L;;;;;N;;;;;
+11825;DOGRA LETTER LA;Lo;0;L;;;;;N;;;;;
+11826;DOGRA LETTER VA;Lo;0;L;;;;;N;;;;;
+11827;DOGRA LETTER SHA;Lo;0;L;;;;;N;;;;;
+11828;DOGRA LETTER SSA;Lo;0;L;;;;;N;;;;;
+11829;DOGRA LETTER SA;Lo;0;L;;;;;N;;;;;
+1182A;DOGRA LETTER HA;Lo;0;L;;;;;N;;;;;
+1182B;DOGRA LETTER RRA;Lo;0;L;;;;;N;;;;;
+1182C;DOGRA VOWEL SIGN AA;Mc;0;L;;;;;N;;;;;
+1182D;DOGRA VOWEL SIGN I;Mc;0;L;;;;;N;;;;;
+1182E;DOGRA VOWEL SIGN II;Mc;0;L;;;;;N;;;;;
+1182F;DOGRA VOWEL SIGN U;Mn;0;NSM;;;;;N;;;;;
+11830;DOGRA VOWEL SIGN UU;Mn;0;NSM;;;;;N;;;;;
+11831;DOGRA VOWEL SIGN VOCALIC R;Mn;0;NSM;;;;;N;;;;;
+11832;DOGRA VOWEL SIGN VOCALIC RR;Mn;0;NSM;;;;;N;;;;;
+11833;DOGRA VOWEL SIGN E;Mn;0;NSM;;;;;N;;;;;
+11834;DOGRA VOWEL SIGN AI;Mn;0;NSM;;;;;N;;;;;
+11835;DOGRA VOWEL SIGN O;Mn;0;NSM;;;;;N;;;;;
+11836;DOGRA VOWEL SIGN AU;Mn;0;NSM;;;;;N;;;;;
+11837;DOGRA SIGN ANUSVARA;Mn;0;NSM;;;;;N;;;;;
+11838;DOGRA SIGN VISARGA;Mc;0;L;;;;;N;;;;;
+11839;DOGRA SIGN VIRAMA;Mn;9;NSM;;;;;N;;;;;
+1183A;DOGRA SIGN NUKTA;Mn;7;NSM;;;;;N;;;;;
+1183B;DOGRA ABBREVIATION SIGN;Po;0;L;;;;;N;;;;;
 118A0;WARANG CITI CAPITAL LETTER NGAA;Lu;0;L;;;;;N;;;;118C0;
 118A1;WARANG CITI CAPITAL LETTER A;Lu;0;L;;;;;N;;;;118C1;
 118A2;WARANG CITI CAPITAL LETTER WI;Lu;0;L;;;;;N;;;;118C2;
@@ -20114,8 +20428,8 @@ FFFD;REPLACEMENT CHARACTER;So;0;ON;;;;;N;;;;;
 11A04;ZANABAZAR SQUARE VOWEL SIGN E;Mn;0;NSM;;;;;N;;;;;
 11A05;ZANABAZAR SQUARE VOWEL SIGN OE;Mn;0;NSM;;;;;N;;;;;
 11A06;ZANABAZAR SQUARE VOWEL SIGN O;Mn;0;NSM;;;;;N;;;;;
-11A07;ZANABAZAR SQUARE VOWEL SIGN AI;Mc;0;L;;;;;N;;;;;
-11A08;ZANABAZAR SQUARE VOWEL SIGN AU;Mc;0;L;;;;;N;;;;;
+11A07;ZANABAZAR SQUARE VOWEL SIGN AI;Mn;0;L;;;;;N;;;;;
+11A08;ZANABAZAR SQUARE VOWEL SIGN AU;Mn;0;L;;;;;N;;;;;
 11A09;ZANABAZAR SQUARE VOWEL SIGN REVERSED I;Mn;0;NSM;;;;;N;;;;;
 11A0A;ZANABAZAR SQUARE VOWEL LENGTH MARK;Mn;0;NSM;;;;;N;;;;;
 11A0B;ZANABAZAR SQUARE LETTER KA;Lo;0;L;;;;;N;;;;;
@@ -20254,6 +20568,7 @@ FFFD;REPLACEMENT CHARACTER;So;0;ON;;;;;N;;;;;
 11A9A;SOYOMBO MARK TSHEG;Po;0;L;;;;;N;;;;;
 11A9B;SOYOMBO MARK SHAD;Po;0;L;;;;;N;;;;;
 11A9C;SOYOMBO MARK DOUBLE SHAD;Po;0;L;;;;;N;;;;;
+11A9D;SOYOMBO MARK PLUTA;Lo;0;L;;;;;N;;;;;
 11A9E;SOYOMBO HEAD MARK WITH MOON AND SUN AND TRIPLE FLAME;Po;0;L;;;;;N;;;;;
 11A9F;SOYOMBO HEAD MARK WITH MOON AND SUN AND FLAME;Po;0;L;;;;;N;;;;;
 11AA0;SOYOMBO HEAD MARK WITH MOON AND SUN;Po;0;L;;;;;N;;;;;
@@ -20556,6 +20871,94 @@ FFFD;REPLACEMENT CHARACTER;So;0;ON;;;;;N;;;;;
 11D57;MASARAM GONDI DIGIT SEVEN;Nd;0;L;;7;7;7;N;;;;;
 11D58;MASARAM GONDI DIGIT EIGHT;Nd;0;L;;8;8;8;N;;;;;
 11D59;MASARAM GONDI DIGIT NINE;Nd;0;L;;9;9;9;N;;;;;
+11D60;GUNJALA GONDI LETTER A;Lo;0;L;;;;;N;;;;;
+11D61;GUNJALA GONDI LETTER AA;Lo;0;L;;;;;N;;;;;
+11D62;GUNJALA GONDI LETTER I;Lo;0;L;;;;;N;;;;;
+11D63;GUNJALA GONDI LETTER II;Lo;0;L;;;;;N;;;;;
+11D64;GUNJALA GONDI LETTER U;Lo;0;L;;;;;N;;;;;
+11D65;GUNJALA GONDI LETTER UU;Lo;0;L;;;;;N;;;;;
+11D67;GUNJALA GONDI LETTER EE;Lo;0;L;;;;;N;;;;;
+11D68;GUNJALA GONDI LETTER AI;Lo;0;L;;;;;N;;;;;
+11D6A;GUNJALA GONDI LETTER OO;Lo;0;L;;;;;N;;;;;
+11D6B;GUNJALA GONDI LETTER AU;Lo;0;L;;;;;N;;;;;
+11D6C;GUNJALA GONDI LETTER YA;Lo;0;L;;;;;N;;;;;
+11D6D;GUNJALA GONDI LETTER VA;Lo;0;L;;;;;N;;;;;
+11D6E;GUNJALA GONDI LETTER BA;Lo;0;L;;;;;N;;;;;
+11D6F;GUNJALA GONDI LETTER BHA;Lo;0;L;;;;;N;;;;;
+11D70;GUNJALA GONDI LETTER MA;Lo;0;L;;;;;N;;;;;
+11D71;GUNJALA GONDI LETTER KA;Lo;0;L;;;;;N;;;;;
+11D72;GUNJALA GONDI LETTER KHA;Lo;0;L;;;;;N;;;;;
+11D73;GUNJALA GONDI LETTER TA;Lo;0;L;;;;;N;;;;;
+11D74;GUNJALA GONDI LETTER THA;Lo;0;L;;;;;N;;;;;
+11D75;GUNJALA GONDI LETTER LA;Lo;0;L;;;;;N;;;;;
+11D76;GUNJALA GONDI LETTER GA;Lo;0;L;;;;;N;;;;;
+11D77;GUNJALA GONDI LETTER GHA;Lo;0;L;;;;;N;;;;;
+11D78;GUNJALA GONDI LETTER DA;Lo;0;L;;;;;N;;;;;
+11D79;GUNJALA GONDI LETTER DHA;Lo;0;L;;;;;N;;;;;
+11D7A;GUNJALA GONDI LETTER NA;Lo;0;L;;;;;N;;;;;
+11D7B;GUNJALA GONDI LETTER CA;Lo;0;L;;;;;N;;;;;
+11D7C;GUNJALA GONDI LETTER CHA;Lo;0;L;;;;;N;;;;;
+11D7D;GUNJALA GONDI LETTER TTA;Lo;0;L;;;;;N;;;;;
+11D7E;GUNJALA GONDI LETTER TTHA;Lo;0;L;;;;;N;;;;;
+11D7F;GUNJALA GONDI LETTER LLA;Lo;0;L;;;;;N;;;;;
+11D80;GUNJALA GONDI LETTER JA;Lo;0;L;;;;;N;;;;;
+11D81;GUNJALA GONDI LETTER JHA;Lo;0;L;;;;;N;;;;;
+11D82;GUNJALA GONDI LETTER DDA;Lo;0;L;;;;;N;;;;;
+11D83;GUNJALA GONDI LETTER DDHA;Lo;0;L;;;;;N;;;;;
+11D84;GUNJALA GONDI LETTER NGA;Lo;0;L;;;;;N;;;;;
+11D85;GUNJALA GONDI LETTER PA;Lo;0;L;;;;;N;;;;;
+11D86;GUNJALA GONDI LETTER PHA;Lo;0;L;;;;;N;;;;;
+11D87;GUNJALA GONDI LETTER HA;Lo;0;L;;;;;N;;;;;
+11D88;GUNJALA GONDI LETTER RA;Lo;0;L;;;;;N;;;;;
+11D89;GUNJALA GONDI LETTER SA;Lo;0;L;;;;;N;;;;;
+11D8A;GUNJALA GONDI VOWEL SIGN AA;Mc;0;L;;;;;N;;;;;
+11D8B;GUNJALA GONDI VOWEL SIGN I;Mc;0;L;;;;;N;;;;;
+11D8C;GUNJALA GONDI VOWEL SIGN II;Mc;0;L;;;;;N;;;;;
+11D8D;GUNJALA GONDI VOWEL SIGN U;Mc;0;L;;;;;N;;;;;
+11D8E;GUNJALA GONDI VOWEL SIGN UU;Mc;0;L;;;;;N;;;;;
+11D90;GUNJALA GONDI VOWEL SIGN EE;Mn;0;NSM;;;;;N;;;;;
+11D91;GUNJALA GONDI VOWEL SIGN AI;Mn;0;NSM;;;;;N;;;;;
+11D93;GUNJALA GONDI VOWEL SIGN OO;Mc;0;L;;;;;N;;;;;
+11D94;GUNJALA GONDI VOWEL SIGN AU;Mc;0;L;;;;;N;;;;;
+11D95;GUNJALA GONDI SIGN ANUSVARA;Mn;0;NSM;;;;;N;;;;;
+11D96;GUNJALA GONDI SIGN VISARGA;Mc;0;L;;;;;N;;;;;
+11D97;GUNJALA GONDI VIRAMA;Mn;9;NSM;;;;;N;;;;;
+11D98;GUNJALA GONDI OM;Lo;0;L;;;;;N;;;;;
+11DA0;GUNJALA GONDI DIGIT ZERO;Nd;0;L;;0;0;0;N;;;;;
+11DA1;GUNJALA GONDI DIGIT ONE;Nd;0;L;;1;1;1;N;;;;;
+11DA2;GUNJALA GONDI DIGIT TWO;Nd;0;L;;2;2;2;N;;;;;
+11DA3;GUNJALA GONDI DIGIT THREE;Nd;0;L;;3;3;3;N;;;;;
+11DA4;GUNJALA GONDI DIGIT FOUR;Nd;0;L;;4;4;4;N;;;;;
+11DA5;GUNJALA GONDI DIGIT FIVE;Nd;0;L;;5;5;5;N;;;;;
+11DA6;GUNJALA GONDI DIGIT SIX;Nd;0;L;;6;6;6;N;;;;;
+11DA7;GUNJALA GONDI DIGIT SEVEN;Nd;0;L;;7;7;7;N;;;;;
+11DA8;GUNJALA GONDI DIGIT EIGHT;Nd;0;L;;8;8;8;N;;;;;
+11DA9;GUNJALA GONDI DIGIT NINE;Nd;0;L;;9;9;9;N;;;;;
+11EE0;MAKASAR LETTER KA;Lo;0;L;;;;;N;;;;;
+11EE1;MAKASAR LETTER GA;Lo;0;L;;;;;N;;;;;
+11EE2;MAKASAR LETTER NGA;Lo;0;L;;;;;N;;;;;
+11EE3;MAKASAR LETTER PA;Lo;0;L;;;;;N;;;;;
+11EE4;MAKASAR LETTER BA;Lo;0;L;;;;;N;;;;;
+11EE5;MAKASAR LETTER MA;Lo;0;L;;;;;N;;;;;
+11EE6;MAKASAR LETTER TA;Lo;0;L;;;;;N;;;;;
+11EE7;MAKASAR LETTER DA;Lo;0;L;;;;;N;;;;;
+11EE8;MAKASAR LETTER NA;Lo;0;L;;;;;N;;;;;
+11EE9;MAKASAR LETTER CA;Lo;0;L;;;;;N;;;;;
+11EEA;MAKASAR LETTER JA;Lo;0;L;;;;;N;;;;;
+11EEB;MAKASAR LETTER NYA;Lo;0;L;;;;;N;;;;;
+11EEC;MAKASAR LETTER YA;Lo;0;L;;;;;N;;;;;
+11EED;MAKASAR LETTER RA;Lo;0;L;;;;;N;;;;;
+11EEE;MAKASAR LETTER LA;Lo;0;L;;;;;N;;;;;
+11EEF;MAKASAR LETTER VA;Lo;0;L;;;;;N;;;;;
+11EF0;MAKASAR LETTER SA;Lo;0;L;;;;;N;;;;;
+11EF1;MAKASAR LETTER A;Lo;0;L;;;;;N;;;;;
+11EF2;MAKASAR ANGKA;Lo;0;L;;;;;N;;;;;
+11EF3;MAKASAR VOWEL SIGN I;Mn;0;NSM;;;;;N;;;;;
+11EF4;MAKASAR VOWEL SIGN U;Mn;0;NSM;;;;;N;;;;;
+11EF5;MAKASAR VOWEL SIGN E;Mc;0;L;;;;;N;;;;;
+11EF6;MAKASAR VOWEL SIGN O;Mc;0;L;;;;;N;;;;;
+11EF7;MAKASAR PASSIMBANG;Po;0;L;;;;;N;;;;;
+11EF8;MAKASAR END OF SECTION;Po;0;L;;;;;N;;;;;
 12000;CUNEIFORM SIGN A;Lo;0;L;;;;;N;;;;;
 12001;CUNEIFORM SIGN A TIMES A;Lo;0;L;;;;;N;;;;;
 12002;CUNEIFORM SIGN A TIMES BAD;Lo;0;L;;;;;N;;;;;
@@ -24219,6 +24622,97 @@ FFFD;REPLACEMENT CHARACTER;So;0;ON;;;;;N;;;;;
 16B8D;PAHAWH HMONG CLAN SIGN TSWB;Lo;0;L;;;;;N;;;;;
 16B8E;PAHAWH HMONG CLAN SIGN KWM;Lo;0;L;;;;;N;;;;;
 16B8F;PAHAWH HMONG CLAN SIGN VWJ;Lo;0;L;;;;;N;;;;;
+16E40;MEDEFAIDRIN CAPITAL LETTER M;Lu;0;L;;;;;N;;;;16E60;
+16E41;MEDEFAIDRIN CAPITAL LETTER S;Lu;0;L;;;;;N;;;;16E61;
+16E42;MEDEFAIDRIN CAPITAL LETTER V;Lu;0;L;;;;;N;;;;16E62;
+16E43;MEDEFAIDRIN CAPITAL LETTER W;Lu;0;L;;;;;N;;;;16E63;
+16E44;MEDEFAIDRIN CAPITAL LETTER ATIU;Lu;0;L;;;;;N;;;;16E64;
+16E45;MEDEFAIDRIN CAPITAL LETTER Z;Lu;0;L;;;;;N;;;;16E65;
+16E46;MEDEFAIDRIN CAPITAL LETTER KP;Lu;0;L;;;;;N;;;;16E66;
+16E47;MEDEFAIDRIN CAPITAL LETTER P;Lu;0;L;;;;;N;;;;16E67;
+16E48;MEDEFAIDRIN CAPITAL LETTER T;Lu;0;L;;;;;N;;;;16E68;
+16E49;MEDEFAIDRIN CAPITAL LETTER G;Lu;0;L;;;;;N;;;;16E69;
+16E4A;MEDEFAIDRIN CAPITAL LETTER F;Lu;0;L;;;;;N;;;;16E6A;
+16E4B;MEDEFAIDRIN CAPITAL LETTER I;Lu;0;L;;;;;N;;;;16E6B;
+16E4C;MEDEFAIDRIN CAPITAL LETTER K;Lu;0;L;;;;;N;;;;16E6C;
+16E4D;MEDEFAIDRIN CAPITAL LETTER A;Lu;0;L;;;;;N;;;;16E6D;
+16E4E;MEDEFAIDRIN CAPITAL LETTER J;Lu;0;L;;;;;N;;;;16E6E;
+16E4F;MEDEFAIDRIN CAPITAL LETTER E;Lu;0;L;;;;;N;;;;16E6F;
+16E50;MEDEFAIDRIN CAPITAL LETTER B;Lu;0;L;;;;;N;;;;16E70;
+16E51;MEDEFAIDRIN CAPITAL LETTER C;Lu;0;L;;;;;N;;;;16E71;
+16E52;MEDEFAIDRIN CAPITAL LETTER U;Lu;0;L;;;;;N;;;;16E72;
+16E53;MEDEFAIDRIN CAPITAL LETTER YU;Lu;0;L;;;;;N;;;;16E73;
+16E54;MEDEFAIDRIN CAPITAL LETTER L;Lu;0;L;;;;;N;;;;16E74;
+16E55;MEDEFAIDRIN CAPITAL LETTER Q;Lu;0;L;;;;;N;;;;16E75;
+16E56;MEDEFAIDRIN CAPITAL LETTER HP;Lu;0;L;;;;;N;;;;16E76;
+16E57;MEDEFAIDRIN CAPITAL LETTER NY;Lu;0;L;;;;;N;;;;16E77;
+16E58;MEDEFAIDRIN CAPITAL LETTER X;Lu;0;L;;;;;N;;;;16E78;
+16E59;MEDEFAIDRIN CAPITAL LETTER D;Lu;0;L;;;;;N;;;;16E79;
+16E5A;MEDEFAIDRIN CAPITAL LETTER OE;Lu;0;L;;;;;N;;;;16E7A;
+16E5B;MEDEFAIDRIN CAPITAL LETTER N;Lu;0;L;;;;;N;;;;16E7B;
+16E5C;MEDEFAIDRIN CAPITAL LETTER R;Lu;0;L;;;;;N;;;;16E7C;
+16E5D;MEDEFAIDRIN CAPITAL LETTER O;Lu;0;L;;;;;N;;;;16E7D;
+16E5E;MEDEFAIDRIN CAPITAL LETTER AI;Lu;0;L;;;;;N;;;;16E7E;
+16E5F;MEDEFAIDRIN CAPITAL LETTER Y;Lu;0;L;;;;;N;;;;16E7F;
+16E60;MEDEFAIDRIN SMALL LETTER M;Ll;0;L;;;;;N;;;16E40;;16E40
+16E61;MEDEFAIDRIN SMALL LETTER S;Ll;0;L;;;;;N;;;16E41;;16E41
+16E62;MEDEFAIDRIN SMALL LETTER V;Ll;0;L;;;;;N;;;16E42;;16E42
+16E63;MEDEFAIDRIN SMALL LETTER W;Ll;0;L;;;;;N;;;16E43;;16E43
+16E64;MEDEFAIDRIN SMALL LETTER ATIU;Ll;0;L;;;;;N;;;16E44;;16E44
+16E65;MEDEFAIDRIN SMALL LETTER Z;Ll;0;L;;;;;N;;;16E45;;16E45
+16E66;MEDEFAIDRIN SMALL LETTER KP;Ll;0;L;;;;;N;;;16E46;;16E46
+16E67;MEDEFAIDRIN SMALL LETTER P;Ll;0;L;;;;;N;;;16E47;;16E47
+16E68;MEDEFAIDRIN SMALL LETTER T;Ll;0;L;;;;;N;;;16E48;;16E48
+16E69;MEDEFAIDRIN SMALL LETTER G;Ll;0;L;;;;;N;;;16E49;;16E49
+16E6A;MEDEFAIDRIN SMALL LETTER F;Ll;0;L;;;;;N;;;16E4A;;16E4A
+16E6B;MEDEFAIDRIN SMALL LETTER I;Ll;0;L;;;;;N;;;16E4B;;16E4B
+16E6C;MEDEFAIDRIN SMALL LETTER K;Ll;0;L;;;;;N;;;16E4C;;16E4C
+16E6D;MEDEFAIDRIN SMALL LETTER A;Ll;0;L;;;;;N;;;16E4D;;16E4D
+16E6E;MEDEFAIDRIN SMALL LETTER J;Ll;0;L;;;;;N;;;16E4E;;16E4E
+16E6F;MEDEFAIDRIN SMALL LETTER E;Ll;0;L;;;;;N;;;16E4F;;16E4F
+16E70;MEDEFAIDRIN SMALL LETTER B;Ll;0;L;;;;;N;;;16E50;;16E50
+16E71;MEDEFAIDRIN SMALL LETTER C;Ll;0;L;;;;;N;;;16E51;;16E51
+16E72;MEDEFAIDRIN SMALL LETTER U;Ll;0;L;;;;;N;;;16E52;;16E52
+16E73;MEDEFAIDRIN SMALL LETTER YU;Ll;0;L;;;;;N;;;16E53;;16E53
+16E74;MEDEFAIDRIN SMALL LETTER L;Ll;0;L;;;;;N;;;16E54;;16E54
+16E75;MEDEFAIDRIN SMALL LETTER Q;Ll;0;L;;;;;N;;;16E55;;16E55
+16E76;MEDEFAIDRIN SMALL LETTER HP;Ll;0;L;;;;;N;;;16E56;;16E56
+16E77;MEDEFAIDRIN SMALL LETTER NY;Ll;0;L;;;;;N;;;16E57;;16E57
+16E78;MEDEFAIDRIN SMALL LETTER X;Ll;0;L;;;;;N;;;16E58;;16E58
+16E79;MEDEFAIDRIN SMALL LETTER D;Ll;0;L;;;;;N;;;16E59;;16E59
+16E7A;MEDEFAIDRIN SMALL LETTER OE;Ll;0;L;;;;;N;;;16E5A;;16E5A
+16E7B;MEDEFAIDRIN SMALL LETTER N;Ll;0;L;;;;;N;;;16E5B;;16E5B
+16E7C;MEDEFAIDRIN SMALL LETTER R;Ll;0;L;;;;;N;;;16E5C;;16E5C
+16E7D;MEDEFAIDRIN SMALL LETTER O;Ll;0;L;;;;;N;;;16E5D;;16E5D
+16E7E;MEDEFAIDRIN SMALL LETTER AI;Ll;0;L;;;;;N;;;16E5E;;16E5E
+16E7F;MEDEFAIDRIN SMALL LETTER Y;Ll;0;L;;;;;N;;;16E5F;;16E5F
+16E80;MEDEFAIDRIN DIGIT ZERO;No;0;L;;;;0;N;;;;;
+16E81;MEDEFAIDRIN DIGIT ONE;No;0;L;;;;1;N;;;;;
+16E82;MEDEFAIDRIN DIGIT TWO;No;0;L;;;;2;N;;;;;
+16E83;MEDEFAIDRIN DIGIT THREE;No;0;L;;;;3;N;;;;;
+16E84;MEDEFAIDRIN DIGIT FOUR;No;0;L;;;;4;N;;;;;
+16E85;MEDEFAIDRIN DIGIT FIVE;No;0;L;;;;5;N;;;;;
+16E86;MEDEFAIDRIN DIGIT SIX;No;0;L;;;;6;N;;;;;
+16E87;MEDEFAIDRIN DIGIT SEVEN;No;0;L;;;;7;N;;;;;
+16E88;MEDEFAIDRIN DIGIT EIGHT;No;0;L;;;;8;N;;;;;
+16E89;MEDEFAIDRIN DIGIT NINE;No;0;L;;;;9;N;;;;;
+16E8A;MEDEFAIDRIN NUMBER TEN;No;0;L;;;;10;N;;;;;
+16E8B;MEDEFAIDRIN NUMBER ELEVEN;No;0;L;;;;11;N;;;;;
+16E8C;MEDEFAIDRIN NUMBER TWELVE;No;0;L;;;;12;N;;;;;
+16E8D;MEDEFAIDRIN NUMBER THIRTEEN;No;0;L;;;;13;N;;;;;
+16E8E;MEDEFAIDRIN NUMBER FOURTEEN;No;0;L;;;;14;N;;;;;
+16E8F;MEDEFAIDRIN NUMBER FIFTEEN;No;0;L;;;;15;N;;;;;
+16E90;MEDEFAIDRIN NUMBER SIXTEEN;No;0;L;;;;16;N;;;;;
+16E91;MEDEFAIDRIN NUMBER SEVENTEEN;No;0;L;;;;17;N;;;;;
+16E92;MEDEFAIDRIN NUMBER EIGHTEEN;No;0;L;;;;18;N;;;;;
+16E93;MEDEFAIDRIN NUMBER NINETEEN;No;0;L;;;;19;N;;;;;
+16E94;MEDEFAIDRIN DIGIT ONE ALTERNATE FORM;No;0;L;;;;1;N;;;;;
+16E95;MEDEFAIDRIN DIGIT TWO ALTERNATE FORM;No;0;L;;;;2;N;;;;;
+16E96;MEDEFAIDRIN DIGIT THREE ALTERNATE FORM;No;0;L;;;;3;N;;;;;
+16E97;MEDEFAIDRIN COMMA;Po;0;L;;;;;N;;;;;
+16E98;MEDEFAIDRIN FULL STOP;Po;0;L;;;;;N;;;;;
+16E99;MEDEFAIDRIN SYMBOL AIVA;Po;0;L;;;;;N;;;;;
+16E9A;MEDEFAIDRIN EXCLAMATION OH;Po;0;L;;;;;N;;;;;
 16F00;MIAO LETTER PA;Lo;0;L;;;;;N;;;;;
 16F01;MIAO LETTER BA;Lo;0;L;;;;;N;;;;;
 16F02;MIAO LETTER YI PA;Lo;0;L;;;;;N;;;;;
@@ -24355,7 +24849,7 @@ FFFD;REPLACEMENT CHARACTER;So;0;ON;;;;;N;;;;;
 16FE0;TANGUT ITERATION MARK;Lm;0;L;;;;;N;;;;;
 16FE1;NUSHU ITERATION MARK;Lm;0;L;;;;;N;;;;;
 17000;<Tangut Ideograph, First>;Lo;0;L;;;;;N;;;;;
-187EC;<Tangut Ideograph, Last>;Lo;0;L;;;;;N;;;;;
+187F1;<Tangut Ideograph, Last>;Lo;0;L;;;;;N;;;;;
 18800;TANGUT COMPONENT-001;Lo;0;L;;;;;N;;;;;
 18801;TANGUT COMPONENT-002;Lo;0;L;;;;;N;;;;;
 18802;TANGUT COMPONENT-003;Lo;0;L;;;;;N;;;;;
@@ -26488,6 +26982,26 @@ FFFD;REPLACEMENT CHARACTER;So;0;ON;;;;;N;;;;;
 1D243;COMBINING GREEK MUSICAL TETRASEME;Mn;230;NSM;;;;;N;;;;;
 1D244;COMBINING GREEK MUSICAL PENTASEME;Mn;230;NSM;;;;;N;;;;;
 1D245;GREEK MUSICAL LEIMMA;So;0;ON;;;;;N;;;;;
+1D2E0;MAYAN NUMERAL ZERO;No;0;L;;;;0;N;;;;;
+1D2E1;MAYAN NUMERAL ONE;No;0;L;;;;1;N;;;;;
+1D2E2;MAYAN NUMERAL TWO;No;0;L;;;;2;N;;;;;
+1D2E3;MAYAN NUMERAL THREE;No;0;L;;;;3;N;;;;;
+1D2E4;MAYAN NUMERAL FOUR;No;0;L;;;;4;N;;;;;
+1D2E5;MAYAN NUMERAL FIVE;No;0;L;;;;5;N;;;;;
+1D2E6;MAYAN NUMERAL SIX;No;0;L;;;;6;N;;;;;
+1D2E7;MAYAN NUMERAL SEVEN;No;0;L;;;;7;N;;;;;
+1D2E8;MAYAN NUMERAL EIGHT;No;0;L;;;;8;N;;;;;
+1D2E9;MAYAN NUMERAL NINE;No;0;L;;;;9;N;;;;;
+1D2EA;MAYAN NUMERAL TEN;No;0;L;;;;10;N;;;;;
+1D2EB;MAYAN NUMERAL ELEVEN;No;0;L;;;;11;N;;;;;
+1D2EC;MAYAN NUMERAL TWELVE;No;0;L;;;;12;N;;;;;
+1D2ED;MAYAN NUMERAL THIRTEEN;No;0;L;;;;13;N;;;;;
+1D2EE;MAYAN NUMERAL FOURTEEN;No;0;L;;;;14;N;;;;;
+1D2EF;MAYAN NUMERAL FIFTEEN;No;0;L;;;;15;N;;;;;
+1D2F0;MAYAN NUMERAL SIXTEEN;No;0;L;;;;16;N;;;;;
+1D2F1;MAYAN NUMERAL SEVENTEEN;No;0;L;;;;17;N;;;;;
+1D2F2;MAYAN NUMERAL EIGHTEEN;No;0;L;;;;18;N;;;;;
+1D2F3;MAYAN NUMERAL NINETEEN;No;0;L;;;;19;N;;;;;
 1D300;MONOGRAM FOR EARTH;So;0;ON;;;;;N;;;;;
 1D301;DIGRAM FOR HEAVENLY EARTH;So;0;ON;;;;;N;;;;;
 1D302;DIGRAM FOR HUMAN EARTH;So;0;ON;;;;;N;;;;;
@@ -26593,6 +27107,13 @@ FFFD;REPLACEMENT CHARACTER;So;0;ON;;;;;N;;;;;
 1D36F;COUNTING ROD TENS DIGIT SEVEN;No;0;L;;;;70;N;;;;;
 1D370;COUNTING ROD TENS DIGIT EIGHT;No;0;L;;;;80;N;;;;;
 1D371;COUNTING ROD TENS DIGIT NINE;No;0;L;;;;90;N;;;;;
+1D372;IDEOGRAPHIC TALLY MARK ONE;No;0;L;;;;1;N;;;;;
+1D373;IDEOGRAPHIC TALLY MARK TWO;No;0;L;;;;2;N;;;;;
+1D374;IDEOGRAPHIC TALLY MARK THREE;No;0;L;;;;3;N;;;;;
+1D375;IDEOGRAPHIC TALLY MARK FOUR;No;0;L;;;;4;N;;;;;
+1D376;IDEOGRAPHIC TALLY MARK FIVE;No;0;L;;;;5;N;;;;;
+1D377;TALLY MARK ONE;No;0;L;;;;1;N;;;;;
+1D378;TALLY MARK FIVE;No;0;L;;;;5;N;;;;;
 1D400;MATHEMATICAL BOLD CAPITAL A;Lu;0;L;<font> 0041;;;;N;;;;;
 1D401;MATHEMATICAL BOLD CAPITAL B;Lu;0;L;<font> 0042;;;;N;;;;;
 1D402;MATHEMATICAL BOLD CAPITAL C;Lu;0;L;<font> 0043;;;;N;;;;;
@@ -28599,6 +29120,74 @@ FFFD;REPLACEMENT CHARACTER;So;0;ON;;;;;N;;;;;
 1E959;ADLAM DIGIT NINE;Nd;0;R;;9;9;9;N;;;;;
 1E95E;ADLAM INITIAL EXCLAMATION MARK;Po;0;R;;;;;N;;;;;
 1E95F;ADLAM INITIAL QUESTION MARK;Po;0;R;;;;;N;;;;;
+1EC71;INDIC SIYAQ NUMBER ONE;No;0;AL;;;;1;N;;;;;
+1EC72;INDIC SIYAQ NUMBER TWO;No;0;AL;;;;2;N;;;;;
+1EC73;INDIC SIYAQ NUMBER THREE;No;0;AL;;;;3;N;;;;;
+1EC74;INDIC SIYAQ NUMBER FOUR;No;0;AL;;;;4;N;;;;;
+1EC75;INDIC SIYAQ NUMBER FIVE;No;0;AL;;;;5;N;;;;;
+1EC76;INDIC SIYAQ NUMBER SIX;No;0;AL;;;;6;N;;;;;
+1EC77;INDIC SIYAQ NUMBER SEVEN;No;0;AL;;;;7;N;;;;;
+1EC78;INDIC SIYAQ NUMBER EIGHT;No;0;AL;;;;8;N;;;;;
+1EC79;INDIC SIYAQ NUMBER NINE;No;0;AL;;;;9;N;;;;;
+1EC7A;INDIC SIYAQ NUMBER TEN;No;0;AL;;;;10;N;;;;;
+1EC7B;INDIC SIYAQ NUMBER TWENTY;No;0;AL;;;;20;N;;;;;
+1EC7C;INDIC SIYAQ NUMBER THIRTY;No;0;AL;;;;30;N;;;;;
+1EC7D;INDIC SIYAQ NUMBER FORTY;No;0;AL;;;;40;N;;;;;
+1EC7E;INDIC SIYAQ NUMBER FIFTY;No;0;AL;;;;50;N;;;;;
+1EC7F;INDIC SIYAQ NUMBER SIXTY;No;0;AL;;;;60;N;;;;;
+1EC80;INDIC SIYAQ NUMBER SEVENTY;No;0;AL;;;;70;N;;;;;
+1EC81;INDIC SIYAQ NUMBER EIGHTY;No;0;AL;;;;80;N;;;;;
+1EC82;INDIC SIYAQ NUMBER NINETY;No;0;AL;;;;90;N;;;;;
+1EC83;INDIC SIYAQ NUMBER ONE HUNDRED;No;0;AL;;;;100;N;;;;;
+1EC84;INDIC SIYAQ NUMBER TWO HUNDRED;No;0;AL;;;;200;N;;;;;
+1EC85;INDIC SIYAQ NUMBER THREE HUNDRED;No;0;AL;;;;300;N;;;;;
+1EC86;INDIC SIYAQ NUMBER FOUR HUNDRED;No;0;AL;;;;400;N;;;;;
+1EC87;INDIC SIYAQ NUMBER FIVE HUNDRED;No;0;AL;;;;500;N;;;;;
+1EC88;INDIC SIYAQ NUMBER SIX HUNDRED;No;0;AL;;;;600;N;;;;;
+1EC89;INDIC SIYAQ NUMBER SEVEN HUNDRED;No;0;AL;;;;700;N;;;;;
+1EC8A;INDIC SIYAQ NUMBER EIGHT HUNDRED;No;0;AL;;;;800;N;;;;;
+1EC8B;INDIC SIYAQ NUMBER NINE HUNDRED;No;0;AL;;;;900;N;;;;;
+1EC8C;INDIC SIYAQ NUMBER ONE THOUSAND;No;0;AL;;;;1000;N;;;;;
+1EC8D;INDIC SIYAQ NUMBER TWO THOUSAND;No;0;AL;;;;2000;N;;;;;
+1EC8E;INDIC SIYAQ NUMBER THREE THOUSAND;No;0;AL;;;;3000;N;;;;;
+1EC8F;INDIC SIYAQ NUMBER FOUR THOUSAND;No;0;AL;;;;4000;N;;;;;
+1EC90;INDIC SIYAQ NUMBER FIVE THOUSAND;No;0;AL;;;;5000;N;;;;;
+1EC91;INDIC SIYAQ NUMBER SIX THOUSAND;No;0;AL;;;;6000;N;;;;;
+1EC92;INDIC SIYAQ NUMBER SEVEN THOUSAND;No;0;AL;;;;7000;N;;;;;
+1EC93;INDIC SIYAQ NUMBER EIGHT THOUSAND;No;0;AL;;;;8000;N;;;;;
+1EC94;INDIC SIYAQ NUMBER NINE THOUSAND;No;0;AL;;;;9000;N;;;;;
+1EC95;INDIC SIYAQ NUMBER TEN THOUSAND;No;0;AL;;;;10000;N;;;;;
+1EC96;INDIC SIYAQ NUMBER TWENTY THOUSAND;No;0;AL;;;;20000;N;;;;;
+1EC97;INDIC SIYAQ NUMBER THIRTY THOUSAND;No;0;AL;;;;30000;N;;;;;
+1EC98;INDIC SIYAQ NUMBER FORTY THOUSAND;No;0;AL;;;;40000;N;;;;;
+1EC99;INDIC SIYAQ NUMBER FIFTY THOUSAND;No;0;AL;;;;50000;N;;;;;
+1EC9A;INDIC SIYAQ NUMBER SIXTY THOUSAND;No;0;AL;;;;60000;N;;;;;
+1EC9B;INDIC SIYAQ NUMBER SEVENTY THOUSAND;No;0;AL;;;;70000;N;;;;;
+1EC9C;INDIC SIYAQ NUMBER EIGHTY THOUSAND;No;0;AL;;;;80000;N;;;;;
+1EC9D;INDIC SIYAQ NUMBER NINETY THOUSAND;No;0;AL;;;;90000;N;;;;;
+1EC9E;INDIC SIYAQ NUMBER LAKH;No;0;AL;;;;100000;N;;;;;
+1EC9F;INDIC SIYAQ NUMBER LAKHAN;No;0;AL;;;;200000;N;;;;;
+1ECA0;INDIC SIYAQ LAKH MARK;No;0;AL;;;;100000;N;;;;;
+1ECA1;INDIC SIYAQ NUMBER KAROR;No;0;AL;;;;10000000;N;;;;;
+1ECA2;INDIC SIYAQ NUMBER KARORAN;No;0;AL;;;;20000000;N;;;;;
+1ECA3;INDIC SIYAQ NUMBER PREFIXED ONE;No;0;AL;;;;1;N;;;;;
+1ECA4;INDIC SIYAQ NUMBER PREFIXED TWO;No;0;AL;;;;2;N;;;;;
+1ECA5;INDIC SIYAQ NUMBER PREFIXED THREE;No;0;AL;;;;3;N;;;;;
+1ECA6;INDIC SIYAQ NUMBER PREFIXED FOUR;No;0;AL;;;;4;N;;;;;
+1ECA7;INDIC SIYAQ NUMBER PREFIXED FIVE;No;0;AL;;;;5;N;;;;;
+1ECA8;INDIC SIYAQ NUMBER PREFIXED SIX;No;0;AL;;;;6;N;;;;;
+1ECA9;INDIC SIYAQ NUMBER PREFIXED SEVEN;No;0;AL;;;;7;N;;;;;
+1ECAA;INDIC SIYAQ NUMBER PREFIXED EIGHT;No;0;AL;;;;8;N;;;;;
+1ECAB;INDIC SIYAQ NUMBER PREFIXED NINE;No;0;AL;;;;9;N;;;;;
+1ECAC;INDIC SIYAQ PLACEHOLDER;So;0;AL;;;;;N;;;;;
+1ECAD;INDIC SIYAQ FRACTION ONE QUARTER;No;0;AL;;;;1/4;N;;;;;
+1ECAE;INDIC SIYAQ FRACTION ONE HALF;No;0;AL;;;;1/2;N;;;;;
+1ECAF;INDIC SIYAQ FRACTION THREE QUARTERS;No;0;AL;;;;3/4;N;;;;;
+1ECB0;INDIC SIYAQ RUPEE MARK;Sc;0;AL;;;;;N;;;;;
+1ECB1;INDIC SIYAQ NUMBER ALTERNATE ONE;No;0;AL;;;;1;N;;;;;
+1ECB2;INDIC SIYAQ NUMBER ALTERNATE TWO;No;0;AL;;;;2;N;;;;;
+1ECB3;INDIC SIYAQ NUMBER ALTERNATE TEN THOUSAND;No;0;AL;;;;10000;N;;;;;
+1ECB4;INDIC SIYAQ ALTERNATE LAKH MARK;No;0;AL;;;;100000;N;;;;;
 1EE00;ARABIC MATHEMATICAL ALEF;Lo;0;AL;<font> 0627;;;;N;;;;;
 1EE01;ARABIC MATHEMATICAL BEH;Lo;0;AL;<font> 0628;;;;N;;;;;
 1EE02;ARABIC MATHEMATICAL JEEM;Lo;0;AL;<font> 062C;;;;N;;;;;
@@ -29012,6 +29601,7 @@ FFFD;REPLACEMENT CHARACTER;So;0;ON;;;;;N;;;;;
 1F12C;CIRCLED ITALIC LATIN CAPITAL LETTER R;So;0;L;<circle> 0052;;;;N;;;;;
 1F12D;CIRCLED CD;So;0;L;<circle> 0043 0044;;;;N;;;;;
 1F12E;CIRCLED WZ;So;0;L;<circle> 0057 005A;;;;N;;;;;
+1F12F;COPYLEFT SYMBOL;So;0;ON;;;;;N;;;;;
 1F130;SQUARED LATIN CAPITAL LETTER A;So;0;L;<square> 0041;;;;N;;;;;
 1F131;SQUARED LATIN CAPITAL LETTER B;So;0;L;<square> 0042;;;;N;;;;;
 1F132;SQUARED LATIN CAPITAL LETTER C;So;0;L;<square> 0043;;;;N;;;;;
@@ -30226,6 +30816,7 @@ FFFD;REPLACEMENT CHARACTER;So;0;ON;;;;;N;;;;;
 1F6F6;CANOE;So;0;ON;;;;;N;;;;;
 1F6F7;SLED;So;0;ON;;;;;N;;;;;
 1F6F8;FLYING SAUCER;So;0;ON;;;;;N;;;;;
+1F6F9;SKATEBOARD;So;0;ON;;;;;N;;;;;
 1F700;ALCHEMICAL SYMBOL FOR QUINTESSENCE;So;0;ON;;;;;N;;;;;
 1F701;ALCHEMICAL SYMBOL FOR AIR;So;0;ON;;;;;N;;;;;
 1F702;ALCHEMICAL SYMBOL FOR FIRE;So;0;ON;;;;;N;;;;;
@@ -30427,6 +31018,10 @@ FFFD;REPLACEMENT CHARACTER;So;0;ON;;;;;N;;;;;
 1F7D2;LIGHT TWELVE POINTED BLACK STAR;So;0;ON;;;;;N;;;;;
 1F7D3;HEAVY TWELVE POINTED BLACK STAR;So;0;ON;;;;;N;;;;;
 1F7D4;HEAVY TWELVE POINTED PINWHEEL STAR;So;0;ON;;;;;N;;;;;
+1F7D5;CIRCLED TRIANGLE;So;0;ON;;;;;N;;;;;
+1F7D6;NEGATIVE CIRCLED TRIANGLE;So;0;ON;;;;;N;;;;;
+1F7D7;CIRCLED SQUARE;So;0;ON;;;;;N;;;;;
+1F7D8;NEGATIVE CIRCLED SQUARE;So;0;ON;;;;;N;;;;;
 1F800;LEFTWARDS ARROW WITH SMALL TRIANGLE ARROWHEAD;So;0;ON;;;;;N;;;;;
 1F801;UPWARDS ARROW WITH SMALL TRIANGLE ARROWHEAD;So;0;ON;;;;;N;;;;;
 1F802;RIGHTWARDS ARROW WITH SMALL TRIANGLE ARROWHEAD;So;0;ON;;;;;N;;;;;
@@ -30647,6 +31242,9 @@ FFFD;REPLACEMENT CHARACTER;So;0;ON;;;;;N;;;;;
 1F94A;BOXING GLOVE;So;0;ON;;;;;N;;;;;
 1F94B;MARTIAL ARTS UNIFORM;So;0;ON;;;;;N;;;;;
 1F94C;CURLING STONE;So;0;ON;;;;;N;;;;;
+1F94D;LACROSSE STICK AND BALL;So;0;ON;;;;;N;;;;;
+1F94E;SOFTBALL;So;0;ON;;;;;N;;;;;
+1F94F;FLYING DISC;So;0;ON;;;;;N;;;;;
 1F950;CROISSANT;So;0;ON;;;;;N;;;;;
 1F951;AVOCADO;So;0;ON;;;;;N;;;;;
 1F952;CUCUMBER;So;0;ON;;;;;N;;;;;
@@ -30675,6 +31273,20 @@ FFFD;REPLACEMENT CHARACTER;So;0;ON;;;;;N;;;;;
 1F969;CUT OF MEAT;So;0;ON;;;;;N;;;;;
 1F96A;SANDWICH;So;0;ON;;;;;N;;;;;
 1F96B;CANNED FOOD;So;0;ON;;;;;N;;;;;
+1F96C;LEAFY GREEN;So;0;ON;;;;;N;;;;;
+1F96D;MANGO;So;0;ON;;;;;N;;;;;
+1F96E;MOON CAKE;So;0;ON;;;;;N;;;;;
+1F96F;BAGEL;So;0;ON;;;;;N;;;;;
+1F970;SMILING FACE WITH SMILING EYES AND THREE HEARTS;So;0;ON;;;;;N;;;;;
+1F973;FACE WITH PARTY HORN AND PARTY HAT;So;0;ON;;;;;N;;;;;
+1F974;FACE WITH UNEVEN EYES AND WAVY MOUTH;So;0;ON;;;;;N;;;;;
+1F975;OVERHEATED FACE;So;0;ON;;;;;N;;;;;
+1F976;FREEZING FACE;So;0;ON;;;;;N;;;;;
+1F97A;FACE WITH PLEADING EYES;So;0;ON;;;;;N;;;;;
+1F97C;LAB COAT;So;0;ON;;;;;N;;;;;
+1F97D;GOGGLES;So;0;ON;;;;;N;;;;;
+1F97E;HIKING BOOT;So;0;ON;;;;;N;;;;;
+1F97F;FLAT SHOE;So;0;ON;;;;;N;;;;;
 1F980;CRAB;So;0;ON;;;;;N;;;;;
 1F981;LION FACE;So;0;ON;;;;;N;;;;;
 1F982;SCORPION;So;0;ON;;;;;N;;;;;
@@ -30699,7 +31311,30 @@ FFFD;REPLACEMENT CHARACTER;So;0;ON;;;;;N;;;;;
 1F995;SAUROPOD;So;0;ON;;;;;N;;;;;
 1F996;T-REX;So;0;ON;;;;;N;;;;;
 1F997;CRICKET;So;0;ON;;;;;N;;;;;
+1F998;KANGAROO;So;0;ON;;;;;N;;;;;
+1F999;LLAMA;So;0;ON;;;;;N;;;;;
+1F99A;PEACOCK;So;0;ON;;;;;N;;;;;
+1F99B;HIPPOPOTAMUS;So;0;ON;;;;;N;;;;;
+1F99C;PARROT;So;0;ON;;;;;N;;;;;
+1F99D;RACCOON;So;0;ON;;;;;N;;;;;
+1F99E;LOBSTER;So;0;ON;;;;;N;;;;;
+1F99F;MOSQUITO;So;0;ON;;;;;N;;;;;
+1F9A0;MICROBE;So;0;ON;;;;;N;;;;;
+1F9A1;BADGER;So;0;ON;;;;;N;;;;;
+1F9A2;SWAN;So;0;ON;;;;;N;;;;;
+1F9B0;EMOJI COMPONENT RED HAIR;So;0;ON;;;;;N;;;;;
+1F9B1;EMOJI COMPONENT CURLY HAIR;So;0;ON;;;;;N;;;;;
+1F9B2;EMOJI COMPONENT BALD;So;0;ON;;;;;N;;;;;
+1F9B3;EMOJI COMPONENT WHITE HAIR;So;0;ON;;;;;N;;;;;
+1F9B4;BONE;So;0;ON;;;;;N;;;;;
+1F9B5;LEG;So;0;ON;;;;;N;;;;;
+1F9B6;FOOT;So;0;ON;;;;;N;;;;;
+1F9B7;TOOTH;So;0;ON;;;;;N;;;;;
+1F9B8;SUPERHERO;So;0;ON;;;;;N;;;;;
+1F9B9;SUPERVILLAIN;So;0;ON;;;;;N;;;;;
 1F9C0;CHEESE WEDGE;So;0;ON;;;;;N;;;;;
+1F9C1;CUPCAKE;So;0;ON;;;;;N;;;;;
+1F9C2;SALT SHAKER;So;0;ON;;;;;N;;;;;
 1F9D0;FACE WITH MONOCLE;So;0;ON;;;;;N;;;;;
 1F9D1;ADULT;So;0;ON;;;;;N;;;;;
 1F9D2;CHILD;So;0;ON;;;;;N;;;;;
@@ -30723,6 +31358,45 @@ FFFD;REPLACEMENT CHARACTER;So;0;ON;;;;;N;;;;;
 1F9E4;GLOVES;So;0;ON;;;;;N;;;;;
 1F9E5;COAT;So;0;ON;;;;;N;;;;;
 1F9E6;SOCKS;So;0;ON;;;;;N;;;;;
+1F9E7;RED GIFT ENVELOPE;So;0;ON;;;;;N;;;;;
+1F9E8;FIRECRACKER;So;0;ON;;;;;N;;;;;
+1F9E9;JIGSAW PUZZLE PIECE;So;0;ON;;;;;N;;;;;
+1F9EA;TEST TUBE;So;0;ON;;;;;N;;;;;
+1F9EB;PETRI DISH;So;0;ON;;;;;N;;;;;
+1F9EC;DNA DOUBLE HELIX;So;0;ON;;;;;N;;;;;
+1F9ED;COMPASS;So;0;ON;;;;;N;;;;;
+1F9EE;ABACUS;So;0;ON;;;;;N;;;;;
+1F9EF;FIRE EXTINGUISHER;So;0;ON;;;;;N;;;;;
+1F9F0;TOOLBOX;So;0;ON;;;;;N;;;;;
+1F9F1;BRICK;So;0;ON;;;;;N;;;;;
+1F9F2;MAGNET;So;0;ON;;;;;N;;;;;
+1F9F3;LUGGAGE;So;0;ON;;;;;N;;;;;
+1F9F4;LOTION BOTTLE;So;0;ON;;;;;N;;;;;
+1F9F5;SPOOL OF THREAD;So;0;ON;;;;;N;;;;;
+1F9F6;BALL OF YARN;So;0;ON;;;;;N;;;;;
+1F9F7;SAFETY PIN;So;0;ON;;;;;N;;;;;
+1F9F8;TEDDY BEAR;So;0;ON;;;;;N;;;;;
+1F9F9;BROOM;So;0;ON;;;;;N;;;;;
+1F9FA;BASKET;So;0;ON;;;;;N;;;;;
+1F9FB;ROLL OF PAPER;So;0;ON;;;;;N;;;;;
+1F9FC;BAR OF SOAP;So;0;ON;;;;;N;;;;;
+1F9FD;SPONGE;So;0;ON;;;;;N;;;;;
+1F9FE;RECEIPT;So;0;ON;;;;;N;;;;;
+1F9FF;NAZAR AMULET;So;0;ON;;;;;N;;;;;
+1FA60;XIANGQI RED GENERAL;So;0;ON;;;;;N;;;;;
+1FA61;XIANGQI RED MANDARIN;So;0;ON;;;;;N;;;;;
+1FA62;XIANGQI RED ELEPHANT;So;0;ON;;;;;N;;;;;
+1FA63;XIANGQI RED HORSE;So;0;ON;;;;;N;;;;;
+1FA64;XIANGQI RED CHARIOT;So;0;ON;;;;;N;;;;;
+1FA65;XIANGQI RED CANNON;So;0;ON;;;;;N;;;;;
+1FA66;XIANGQI RED SOLDIER;So;0;ON;;;;;N;;;;;
+1FA67;XIANGQI BLACK GENERAL;So;0;ON;;;;;N;;;;;
+1FA68;XIANGQI BLACK MANDARIN;So;0;ON;;;;;N;;;;;
+1FA69;XIANGQI BLACK ELEPHANT;So;0;ON;;;;;N;;;;;
+1FA6A;XIANGQI BLACK HORSE;So;0;ON;;;;;N;;;;;
+1FA6B;XIANGQI BLACK CHARIOT;So;0;ON;;;;;N;;;;;
+1FA6C;XIANGQI BLACK CANNON;So;0;ON;;;;;N;;;;;
+1FA6D;XIANGQI BLACK SOLDIER;So;0;ON;;;;;N;;;;;
 20000;<CJK Ideograph Extension B, First>;Lo;0;L;;;;;N;;;;;
 2A6D6;<CJK Ideograph Extension B, Last>;Lo;0;L;;;;;N;;;;;
 2A700;<CJK Ideograph Extension C, First>;Lo;0;L;;;;;N;;;;;
diff --git a/lib/stdlib/uc_spec/emoji-data.txt b/lib/stdlib/uc_spec/emoji-data.txt
new file mode 100644
index 0000000000..6e66455252
--- /dev/null
+++ b/lib/stdlib/uc_spec/emoji-data.txt
@@ -0,0 +1,714 @@
+# emoji-data.txt
+# Date: 2018-02-07, 07:55:18 GMT
+# © 2018 Unicode®, Inc.
+# Unicode and the Unicode Logo are registered trademarks of Unicode, Inc. in the U.S. and other countries.
+# For terms of use, see http://www.unicode.org/terms_of_use.html
+#
+# Emoji Data for UTS #51
+# Version: 11.0
+#
+# For documentation and usage, see http://www.unicode.org/reports/tr51
+#
+# Format: 
+# <codepoint(s)> ; <property> # <comments> 
+# Note: there is no guarantee as to the structure of whitespace or comments
+#
+# Characters and sequences are listed in code point order. Users should be shown a more natural order.
+# See the CLDR collation order for Emoji.
+
+
+# ================================================
+
+# All omitted code points have Emoji=No 
+# @missing: 0000..10FFFF  ; Emoji ; No
+
+0023          ; Emoji                #  1.1  [1] (#️)       number sign
+002A          ; Emoji                #  1.1  [1] (*️)       asterisk
+0030..0039    ; Emoji                #  1.1 [10] (0️..9️)    digit zero..digit nine
+00A9          ; Emoji                #  1.1  [1] (©️)       copyright
+00AE          ; Emoji                #  1.1  [1] (®️)       registered
+203C          ; Emoji                #  1.1  [1] (‼️)       double exclamation mark
+2049          ; Emoji                #  3.0  [1] (⁉️)       exclamation question mark
+2122          ; Emoji                #  1.1  [1] (™️)       trade mark
+2139          ; Emoji                #  3.0  [1] (ℹ️)       information
+2194..2199    ; Emoji                #  1.1  [6] (↔️..↙️)    left-right arrow..down-left arrow
+21A9..21AA    ; Emoji                #  1.1  [2] (↩️..↪️)    right arrow curving left..left arrow curving right
+231A..231B    ; Emoji                #  1.1  [2] (⌚..⌛)    watch..hourglass done
+2328          ; Emoji                #  1.1  [1] (⌨️)       keyboard
+23CF          ; Emoji                #  4.0  [1] (⏏️)       eject button
+23E9..23F3    ; Emoji                #  6.0 [11] (⏩..⏳)    fast-forward button..hourglass not done
+23F8..23FA    ; Emoji                #  7.0  [3] (⏸️..⏺️)    pause button..record button
+24C2          ; Emoji                #  1.1  [1] (Ⓜ️)       circled M
+25AA..25AB    ; Emoji                #  1.1  [2] (▪️..▫️)    black small square..white small square
+25B6          ; Emoji                #  1.1  [1] (▶️)       play button
+25C0          ; Emoji                #  1.1  [1] (◀️)       reverse button
+25FB..25FE    ; Emoji                #  3.2  [4] (◻️..◾)    white medium square..black medium-small square
+2600..2604    ; Emoji                #  1.1  [5] (☀️..☄️)    sun..comet
+260E          ; Emoji                #  1.1  [1] (☎️)       telephone
+2611          ; Emoji                #  1.1  [1] (☑️)       ballot box with check
+2614..2615    ; Emoji                #  4.0  [2] (☔..☕)    umbrella with rain drops..hot beverage
+2618          ; Emoji                #  4.1  [1] (☘️)       shamrock
+261D          ; Emoji                #  1.1  [1] (☝️)       index pointing up
+2620          ; Emoji                #  1.1  [1] (☠️)       skull and crossbones
+2622..2623    ; Emoji                #  1.1  [2] (☢️..☣️)    radioactive..biohazard
+2626          ; Emoji                #  1.1  [1] (☦️)       orthodox cross
+262A          ; Emoji                #  1.1  [1] (☪️)       star and crescent
+262E..262F    ; Emoji                #  1.1  [2] (☮️..☯️)    peace symbol..yin yang
+2638..263A    ; Emoji                #  1.1  [3] (☸️..☺️)    wheel of dharma..smiling face
+2640          ; Emoji                #  1.1  [1] (♀️)       female sign
+2642          ; Emoji                #  1.1  [1] (♂️)       male sign
+2648..2653    ; Emoji                #  1.1 [12] (♈..♓)    Aries..Pisces
+265F..2660    ; Emoji                #  1.1  [2] (♟️..♠️)    chess pawn..spade suit
+2663          ; Emoji                #  1.1  [1] (♣️)       club suit
+2665..2666    ; Emoji                #  1.1  [2] (♥️..♦️)    heart suit..diamond suit
+2668          ; Emoji                #  1.1  [1] (♨️)       hot springs
+267B          ; Emoji                #  3.2  [1] (♻️)       recycling symbol
+267E..267F    ; Emoji                #  4.1  [2] (♾️..♿)    infinity..wheelchair symbol
+2692..2697    ; Emoji                #  4.1  [6] (⚒️..⚗️)    hammer and pick..alembic
+2699          ; Emoji                #  4.1  [1] (⚙️)       gear
+269B..269C    ; Emoji                #  4.1  [2] (⚛️..⚜️)    atom symbol..fleur-de-lis
+26A0..26A1    ; Emoji                #  4.0  [2] (⚠️..⚡)    warning..high voltage
+26AA..26AB    ; Emoji                #  4.1  [2] (⚪..⚫)    white circle..black circle
+26B0..26B1    ; Emoji                #  4.1  [2] (⚰️..⚱️)    coffin..funeral urn
+26BD..26BE    ; Emoji                #  5.2  [2] (⚽..⚾)    soccer ball..baseball
+26C4..26C5    ; Emoji                #  5.2  [2] (⛄..⛅)    snowman without snow..sun behind cloud
+26C8          ; Emoji                #  5.2  [1] (⛈️)       cloud with lightning and rain
+26CE          ; Emoji                #  6.0  [1] (⛎)       Ophiuchus
+26CF          ; Emoji                #  5.2  [1] (⛏️)       pick
+26D1          ; Emoji                #  5.2  [1] (⛑️)       rescue worker’s helmet
+26D3..26D4    ; Emoji                #  5.2  [2] (⛓️..⛔)    chains..no entry
+26E9..26EA    ; Emoji                #  5.2  [2] (⛩️..⛪)    shinto shrine..church
+26F0..26F5    ; Emoji                #  5.2  [6] (⛰️..⛵)    mountain..sailboat
+26F7..26FA    ; Emoji                #  5.2  [4] (⛷️..⛺)    skier..tent
+26FD          ; Emoji                #  5.2  [1] (⛽)       fuel pump
+2702          ; Emoji                #  1.1  [1] (✂️)       scissors
+2705          ; Emoji                #  6.0  [1] (✅)       white heavy check mark
+2708..2709    ; Emoji                #  1.1  [2] (✈️..✉️)    airplane..envelope
+270A..270B    ; Emoji                #  6.0  [2] (✊..✋)    raised fist..raised hand
+270C..270D    ; Emoji                #  1.1  [2] (✌️..✍️)    victory hand..writing hand
+270F          ; Emoji                #  1.1  [1] (✏️)       pencil
+2712          ; Emoji                #  1.1  [1] (✒️)       black nib
+2714          ; Emoji                #  1.1  [1] (✔️)       heavy check mark
+2716          ; Emoji                #  1.1  [1] (✖️)       heavy multiplication x
+271D          ; Emoji                #  1.1  [1] (✝️)       latin cross
+2721          ; Emoji                #  1.1  [1] (✡️)       star of David
+2728          ; Emoji                #  6.0  [1] (✨)       sparkles
+2733..2734    ; Emoji                #  1.1  [2] (✳️..✴️)    eight-spoked asterisk..eight-pointed star
+2744          ; Emoji                #  1.1  [1] (❄️)       snowflake
+2747          ; Emoji                #  1.1  [1] (❇️)       sparkle
+274C          ; Emoji                #  6.0  [1] (❌)       cross mark
+274E          ; Emoji                #  6.0  [1] (❎)       cross mark button
+2753..2755    ; Emoji                #  6.0  [3] (❓..❕)    question mark..white exclamation mark
+2757          ; Emoji                #  5.2  [1] (❗)       exclamation mark
+2763..2764    ; Emoji                #  1.1  [2] (❣️..❤️)    heavy heart exclamation..red heart
+2795..2797    ; Emoji                #  6.0  [3] (➕..➗)    heavy plus sign..heavy division sign
+27A1          ; Emoji                #  1.1  [1] (➡️)       right arrow
+27B0          ; Emoji                #  6.0  [1] (➰)       curly loop
+27BF          ; Emoji                #  6.0  [1] (➿)       double curly loop
+2934..2935    ; Emoji                #  3.2  [2] (⤴️..⤵️)    right arrow curving up..right arrow curving down
+2B05..2B07    ; Emoji                #  4.0  [3] (⬅️..⬇️)    left arrow..down arrow
+2B1B..2B1C    ; Emoji                #  5.1  [2] (⬛..⬜)    black large square..white large square
+2B50          ; Emoji                #  5.1  [1] (⭐)       star
+2B55          ; Emoji                #  5.2  [1] (⭕)       heavy large circle
+3030          ; Emoji                #  1.1  [1] (〰️)       wavy dash
+303D          ; Emoji                #  3.2  [1] (〽️)       part alternation mark
+3297          ; Emoji                #  1.1  [1] (㊗️)       Japanese “congratulations” button
+3299          ; Emoji                #  1.1  [1] (㊙️)       Japanese “secret” button
+1F004         ; Emoji                #  5.1  [1] (🀄)       mahjong red dragon
+1F0CF         ; Emoji                #  6.0  [1] (🃏)       joker
+1F170..1F171  ; Emoji                #  6.0  [2] (🅰️..🅱️)    A button (blood type)..B button (blood type)
+1F17E         ; Emoji                #  6.0  [1] (🅾️)       O button (blood type)
+1F17F         ; Emoji                #  5.2  [1] (🅿️)       P button
+1F18E         ; Emoji                #  6.0  [1] (🆎)       AB button (blood type)
+1F191..1F19A  ; Emoji                #  6.0 [10] (🆑..🆚)    CL button..VS button
+1F1E6..1F1FF  ; Emoji                #  6.0 [26] (🇦..🇿)    regional indicator symbol letter a..regional indicator symbol letter z
+1F201..1F202  ; Emoji                #  6.0  [2] (🈁..🈂️)    Japanese “here” button..Japanese “service charge” button
+1F21A         ; Emoji                #  5.2  [1] (🈚)       Japanese “free of charge” button
+1F22F         ; Emoji                #  5.2  [1] (🈯)       Japanese “reserved” button
+1F232..1F23A  ; Emoji                #  6.0  [9] (🈲..🈺)    Japanese “prohibited” button..Japanese “open for business” button
+1F250..1F251  ; Emoji                #  6.0  [2] (🉐..🉑)    Japanese “bargain” button..Japanese “acceptable” button
+1F300..1F320  ; Emoji                #  6.0 [33] (🌀..🌠)    cyclone..shooting star
+1F321         ; Emoji                #  7.0  [1] (🌡️)       thermometer
+1F324..1F32C  ; Emoji                #  7.0  [9] (🌤️..🌬️)    sun behind small cloud..wind face
+1F32D..1F32F  ; Emoji                #  8.0  [3] (🌭..🌯)    hot dog..burrito
+1F330..1F335  ; Emoji                #  6.0  [6] (🌰..🌵)    chestnut..cactus
+1F336         ; Emoji                #  7.0  [1] (🌶️)       hot pepper
+1F337..1F37C  ; Emoji                #  6.0 [70] (🌷..🍼)    tulip..baby bottle
+1F37D         ; Emoji                #  7.0  [1] (🍽️)       fork and knife with plate
+1F37E..1F37F  ; Emoji                #  8.0  [2] (🍾..🍿)    bottle with popping cork..popcorn
+1F380..1F393  ; Emoji                #  6.0 [20] (🎀..🎓)    ribbon..graduation cap
+1F396..1F397  ; Emoji                #  7.0  [2] (🎖️..🎗️)    military medal..reminder ribbon
+1F399..1F39B  ; Emoji                #  7.0  [3] (🎙️..🎛️)    studio microphone..control knobs
+1F39E..1F39F  ; Emoji                #  7.0  [2] (🎞️..🎟️)    film frames..admission tickets
+1F3A0..1F3C4  ; Emoji                #  6.0 [37] (🎠..🏄)    carousel horse..person surfing
+1F3C5         ; Emoji                #  7.0  [1] (🏅)       sports medal
+1F3C6..1F3CA  ; Emoji                #  6.0  [5] (🏆..🏊)    trophy..person swimming
+1F3CB..1F3CE  ; Emoji                #  7.0  [4] (🏋️..🏎️)    person lifting weights..racing car
+1F3CF..1F3D3  ; Emoji                #  8.0  [5] (🏏..🏓)    cricket game..ping pong
+1F3D4..1F3DF  ; Emoji                #  7.0 [12] (🏔️..🏟️)    snow-capped mountain..stadium
+1F3E0..1F3F0  ; Emoji                #  6.0 [17] (🏠..🏰)    house..castle
+1F3F3..1F3F5  ; Emoji                #  7.0  [3] (🏳️..🏵️)    white flag..rosette
+1F3F7         ; Emoji                #  7.0  [1] (🏷️)       label
+1F3F8..1F3FF  ; Emoji                #  8.0  [8] (🏸..🏿)    badminton..dark skin tone
+1F400..1F43E  ; Emoji                #  6.0 [63] (🐀..🐾)    rat..paw prints
+1F43F         ; Emoji                #  7.0  [1] (🐿️)       chipmunk
+1F440         ; Emoji                #  6.0  [1] (👀)       eyes
+1F441         ; Emoji                #  7.0  [1] (👁️)       eye
+1F442..1F4F7  ; Emoji                #  6.0[182] (👂..📷)    ear..camera
+1F4F8         ; Emoji                #  7.0  [1] (📸)       camera with flash
+1F4F9..1F4FC  ; Emoji                #  6.0  [4] (📹..📼)    video camera..videocassette
+1F4FD         ; Emoji                #  7.0  [1] (📽️)       film projector
+1F4FF         ; Emoji                #  8.0  [1] (📿)       prayer beads
+1F500..1F53D  ; Emoji                #  6.0 [62] (🔀..🔽)    shuffle tracks button..downwards button
+1F549..1F54A  ; Emoji                #  7.0  [2] (🕉️..🕊️)    om..dove
+1F54B..1F54E  ; Emoji                #  8.0  [4] (🕋..🕎)    kaaba..menorah
+1F550..1F567  ; Emoji                #  6.0 [24] (🕐..🕧)    one o’clock..twelve-thirty
+1F56F..1F570  ; Emoji                #  7.0  [2] (🕯️..🕰️)    candle..mantelpiece clock
+1F573..1F579  ; Emoji                #  7.0  [7] (🕳️..🕹️)    hole..joystick
+1F57A         ; Emoji                #  9.0  [1] (🕺)       man dancing
+1F587         ; Emoji                #  7.0  [1] (🖇️)       linked paperclips
+1F58A..1F58D  ; Emoji                #  7.0  [4] (🖊️..🖍️)    pen..crayon
+1F590         ; Emoji                #  7.0  [1] (🖐️)       hand with fingers splayed
+1F595..1F596  ; Emoji                #  7.0  [2] (🖕..🖖)    middle finger..vulcan salute
+1F5A4         ; Emoji                #  9.0  [1] (🖤)       black heart
+1F5A5         ; Emoji                #  7.0  [1] (🖥️)       desktop computer
+1F5A8         ; Emoji                #  7.0  [1] (🖨️)       printer
+1F5B1..1F5B2  ; Emoji                #  7.0  [2] (🖱️..🖲️)    computer mouse..trackball
+1F5BC         ; Emoji                #  7.0  [1] (🖼️)       framed picture
+1F5C2..1F5C4  ; Emoji                #  7.0  [3] (🗂️..🗄️)    card index dividers..file cabinet
+1F5D1..1F5D3  ; Emoji                #  7.0  [3] (🗑️..🗓️)    wastebasket..spiral calendar
+1F5DC..1F5DE  ; Emoji                #  7.0  [3] (🗜️..🗞️)    clamp..rolled-up newspaper
+1F5E1         ; Emoji                #  7.0  [1] (🗡️)       dagger
+1F5E3         ; Emoji                #  7.0  [1] (🗣️)       speaking head
+1F5E8         ; Emoji                #  7.0  [1] (🗨️)       left speech bubble
+1F5EF         ; Emoji                #  7.0  [1] (🗯️)       right anger bubble
+1F5F3         ; Emoji                #  7.0  [1] (🗳️)       ballot box with ballot
+1F5FA         ; Emoji                #  7.0  [1] (🗺️)       world map
+1F5FB..1F5FF  ; Emoji                #  6.0  [5] (🗻..🗿)    mount fuji..moai
+1F600         ; Emoji                #  6.1  [1] (😀)       grinning face
+1F601..1F610  ; Emoji                #  6.0 [16] (😁..😐)    beaming face with smiling eyes..neutral face
+1F611         ; Emoji                #  6.1  [1] (😑)       expressionless face
+1F612..1F614  ; Emoji                #  6.0  [3] (😒..😔)    unamused face..pensive face
+1F615         ; Emoji                #  6.1  [1] (😕)       confused face
+1F616         ; Emoji                #  6.0  [1] (😖)       confounded face
+1F617         ; Emoji                #  6.1  [1] (😗)       kissing face
+1F618         ; Emoji                #  6.0  [1] (😘)       face blowing a kiss
+1F619         ; Emoji                #  6.1  [1] (😙)       kissing face with smiling eyes
+1F61A         ; Emoji                #  6.0  [1] (😚)       kissing face with closed eyes
+1F61B         ; Emoji                #  6.1  [1] (😛)       face with tongue
+1F61C..1F61E  ; Emoji                #  6.0  [3] (😜..😞)    winking face with tongue..disappointed face
+1F61F         ; Emoji                #  6.1  [1] (😟)       worried face
+1F620..1F625  ; Emoji                #  6.0  [6] (😠..😥)    angry face..sad but relieved face
+1F626..1F627  ; Emoji                #  6.1  [2] (😦..😧)    frowning face with open mouth..anguished face
+1F628..1F62B  ; Emoji                #  6.0  [4] (😨..😫)    fearful face..tired face
+1F62C         ; Emoji                #  6.1  [1] (😬)       grimacing face
+1F62D         ; Emoji                #  6.0  [1] (😭)       loudly crying face
+1F62E..1F62F  ; Emoji                #  6.1  [2] (😮..😯)    face with open mouth..hushed face
+1F630..1F633  ; Emoji                #  6.0  [4] (😰..😳)    anxious face with sweat..flushed face
+1F634         ; Emoji                #  6.1  [1] (😴)       sleeping face
+1F635..1F640  ; Emoji                #  6.0 [12] (😵..🙀)    dizzy face..weary cat face
+1F641..1F642  ; Emoji                #  7.0  [2] (🙁..🙂)    slightly frowning face..slightly smiling face
+1F643..1F644  ; Emoji                #  8.0  [2] (🙃..🙄)    upside-down face..face with rolling eyes
+1F645..1F64F  ; Emoji                #  6.0 [11] (🙅..🙏)    person gesturing NO..folded hands
+1F680..1F6C5  ; Emoji                #  6.0 [70] (🚀..🛅)    rocket..left luggage
+1F6CB..1F6CF  ; Emoji                #  7.0  [5] (🛋️..🛏️)    couch and lamp..bed
+1F6D0         ; Emoji                #  8.0  [1] (🛐)       place of worship
+1F6D1..1F6D2  ; Emoji                #  9.0  [2] (🛑..🛒)    stop sign..shopping cart
+1F6E0..1F6E5  ; Emoji                #  7.0  [6] (🛠️..🛥️)    hammer and wrench..motor boat
+1F6E9         ; Emoji                #  7.0  [1] (🛩️)       small airplane
+1F6EB..1F6EC  ; Emoji                #  7.0  [2] (🛫..🛬)    airplane departure..airplane arrival
+1F6F0         ; Emoji                #  7.0  [1] (🛰️)       satellite
+1F6F3         ; Emoji                #  7.0  [1] (🛳️)       passenger ship
+1F6F4..1F6F6  ; Emoji                #  9.0  [3] (🛴..🛶)    kick scooter..canoe
+1F6F7..1F6F8  ; Emoji                # 10.0  [2] (🛷..🛸)    sled..flying saucer
+1F6F9         ; Emoji                # 11.0  [1] (🛹)       skateboard
+1F910..1F918  ; Emoji                #  8.0  [9] (🤐..🤘)    zipper-mouth face..sign of the horns
+1F919..1F91E  ; Emoji                #  9.0  [6] (🤙..🤞)    call me hand..crossed fingers
+1F91F         ; Emoji                # 10.0  [1] (🤟)       love-you gesture
+1F920..1F927  ; Emoji                #  9.0  [8] (🤠..🤧)    cowboy hat face..sneezing face
+1F928..1F92F  ; Emoji                # 10.0  [8] (🤨..🤯)    face with raised eyebrow..exploding head
+1F930         ; Emoji                #  9.0  [1] (🤰)       pregnant woman
+1F931..1F932  ; Emoji                # 10.0  [2] (🤱..🤲)    breast-feeding..palms up together
+1F933..1F93A  ; Emoji                #  9.0  [8] (🤳..🤺)    selfie..person fencing
+1F93C..1F93E  ; Emoji                #  9.0  [3] (🤼..🤾)    people wrestling..person playing handball
+1F940..1F945  ; Emoji                #  9.0  [6] (🥀..🥅)    wilted flower..goal net
+1F947..1F94B  ; Emoji                #  9.0  [5] (🥇..🥋)    1st place medal..martial arts uniform
+1F94C         ; Emoji                # 10.0  [1] (🥌)       curling stone
+1F94D..1F94F  ; Emoji                # 11.0  [3] (🥍..🥏)    lacrosse..flying disc
+1F950..1F95E  ; Emoji                #  9.0 [15] (🥐..🥞)    croissant..pancakes
+1F95F..1F96B  ; Emoji                # 10.0 [13] (🥟..🥫)    dumpling..canned food
+1F96C..1F970  ; Emoji                # 11.0  [5] (🥬..🥰)    leafy green..smiling face with 3 hearts
+1F973..1F976  ; Emoji                # 11.0  [4] (🥳..🥶)    partying face..cold face
+1F97A         ; Emoji                # 11.0  [1] (🥺)       pleading face
+1F97C..1F97F  ; Emoji                # 11.0  [4] (🥼..🥿)    lab coat..woman’s flat shoe
+1F980..1F984  ; Emoji                #  8.0  [5] (🦀..🦄)    crab..unicorn face
+1F985..1F991  ; Emoji                #  9.0 [13] (🦅..🦑)    eagle..squid
+1F992..1F997  ; Emoji                # 10.0  [6] (🦒..🦗)    giraffe..cricket
+1F998..1F9A2  ; Emoji                # 11.0 [11] (🦘..🦢)    kangaroo..swan
+1F9B0..1F9B9  ; Emoji                # 11.0 [10] (🦰..🦹)    red-haired..supervillain
+1F9C0         ; Emoji                #  8.0  [1] (🧀)       cheese wedge
+1F9C1..1F9C2  ; Emoji                # 11.0  [2] (🧁..🧂)    cupcake..salt
+1F9D0..1F9E6  ; Emoji                # 10.0 [23] (🧐..🧦)    face with monocle..socks
+1F9E7..1F9FF  ; Emoji                # 11.0 [25] (🧧..🧿)    red envelope..nazar amulet
+
+# Total elements: 1250
+
+# ================================================
+
+# All omitted code points have Emoji_Presentation=No 
+# @missing: 0000..10FFFF  ; Emoji_Presentation ; No
+
+231A..231B    ; Emoji_Presentation   #  1.1  [2] (⌚..⌛)    watch..hourglass done
+23E9..23EC    ; Emoji_Presentation   #  6.0  [4] (⏩..⏬)    fast-forward button..fast down button
+23F0          ; Emoji_Presentation   #  6.0  [1] (⏰)       alarm clock
+23F3          ; Emoji_Presentation   #  6.0  [1] (⏳)       hourglass not done
+25FD..25FE    ; Emoji_Presentation   #  3.2  [2] (◽..◾)    white medium-small square..black medium-small square
+2614..2615    ; Emoji_Presentation   #  4.0  [2] (☔..☕)    umbrella with rain drops..hot beverage
+2648..2653    ; Emoji_Presentation   #  1.1 [12] (♈..♓)    Aries..Pisces
+267F          ; Emoji_Presentation   #  4.1  [1] (♿)       wheelchair symbol
+2693          ; Emoji_Presentation   #  4.1  [1] (⚓)       anchor
+26A1          ; Emoji_Presentation   #  4.0  [1] (⚡)       high voltage
+26AA..26AB    ; Emoji_Presentation   #  4.1  [2] (⚪..⚫)    white circle..black circle
+26BD..26BE    ; Emoji_Presentation   #  5.2  [2] (⚽..⚾)    soccer ball..baseball
+26C4..26C5    ; Emoji_Presentation   #  5.2  [2] (⛄..⛅)    snowman without snow..sun behind cloud
+26CE          ; Emoji_Presentation   #  6.0  [1] (⛎)       Ophiuchus
+26D4          ; Emoji_Presentation   #  5.2  [1] (⛔)       no entry
+26EA          ; Emoji_Presentation   #  5.2  [1] (⛪)       church
+26F2..26F3    ; Emoji_Presentation   #  5.2  [2] (⛲..⛳)    fountain..flag in hole
+26F5          ; Emoji_Presentation   #  5.2  [1] (⛵)       sailboat
+26FA          ; Emoji_Presentation   #  5.2  [1] (⛺)       tent
+26FD          ; Emoji_Presentation   #  5.2  [1] (⛽)       fuel pump
+2705          ; Emoji_Presentation   #  6.0  [1] (✅)       white heavy check mark
+270A..270B    ; Emoji_Presentation   #  6.0  [2] (✊..✋)    raised fist..raised hand
+2728          ; Emoji_Presentation   #  6.0  [1] (✨)       sparkles
+274C          ; Emoji_Presentation   #  6.0  [1] (❌)       cross mark
+274E          ; Emoji_Presentation   #  6.0  [1] (❎)       cross mark button
+2753..2755    ; Emoji_Presentation   #  6.0  [3] (❓..❕)    question mark..white exclamation mark
+2757          ; Emoji_Presentation   #  5.2  [1] (❗)       exclamation mark
+2795..2797    ; Emoji_Presentation   #  6.0  [3] (➕..➗)    heavy plus sign..heavy division sign
+27B0          ; Emoji_Presentation   #  6.0  [1] (➰)       curly loop
+27BF          ; Emoji_Presentation   #  6.0  [1] (➿)       double curly loop
+2B1B..2B1C    ; Emoji_Presentation   #  5.1  [2] (⬛..⬜)    black large square..white large square
+2B50          ; Emoji_Presentation   #  5.1  [1] (⭐)       star
+2B55          ; Emoji_Presentation   #  5.2  [1] (⭕)       heavy large circle
+1F004         ; Emoji_Presentation   #  5.1  [1] (🀄)       mahjong red dragon
+1F0CF         ; Emoji_Presentation   #  6.0  [1] (🃏)       joker
+1F18E         ; Emoji_Presentation   #  6.0  [1] (🆎)       AB button (blood type)
+1F191..1F19A  ; Emoji_Presentation   #  6.0 [10] (🆑..🆚)    CL button..VS button
+1F1E6..1F1FF  ; Emoji_Presentation   #  6.0 [26] (🇦..🇿)    regional indicator symbol letter a..regional indicator symbol letter z
+1F201         ; Emoji_Presentation   #  6.0  [1] (🈁)       Japanese “here” button
+1F21A         ; Emoji_Presentation   #  5.2  [1] (🈚)       Japanese “free of charge” button
+1F22F         ; Emoji_Presentation   #  5.2  [1] (🈯)       Japanese “reserved” button
+1F232..1F236  ; Emoji_Presentation   #  6.0  [5] (🈲..🈶)    Japanese “prohibited” button..Japanese “not free of charge” button
+1F238..1F23A  ; Emoji_Presentation   #  6.0  [3] (🈸..🈺)    Japanese “application” button..Japanese “open for business” button
+1F250..1F251  ; Emoji_Presentation   #  6.0  [2] (🉐..🉑)    Japanese “bargain” button..Japanese “acceptable” button
+1F300..1F320  ; Emoji_Presentation   #  6.0 [33] (🌀..🌠)    cyclone..shooting star
+1F32D..1F32F  ; Emoji_Presentation   #  8.0  [3] (🌭..🌯)    hot dog..burrito
+1F330..1F335  ; Emoji_Presentation   #  6.0  [6] (🌰..🌵)    chestnut..cactus
+1F337..1F37C  ; Emoji_Presentation   #  6.0 [70] (🌷..🍼)    tulip..baby bottle
+1F37E..1F37F  ; Emoji_Presentation   #  8.0  [2] (🍾..🍿)    bottle with popping cork..popcorn
+1F380..1F393  ; Emoji_Presentation   #  6.0 [20] (🎀..🎓)    ribbon..graduation cap
+1F3A0..1F3C4  ; Emoji_Presentation   #  6.0 [37] (🎠..🏄)    carousel horse..person surfing
+1F3C5         ; Emoji_Presentation   #  7.0  [1] (🏅)       sports medal
+1F3C6..1F3CA  ; Emoji_Presentation   #  6.0  [5] (🏆..🏊)    trophy..person swimming
+1F3CF..1F3D3  ; Emoji_Presentation   #  8.0  [5] (🏏..🏓)    cricket game..ping pong
+1F3E0..1F3F0  ; Emoji_Presentation   #  6.0 [17] (🏠..🏰)    house..castle
+1F3F4         ; Emoji_Presentation   #  7.0  [1] (🏴)       black flag
+1F3F8..1F3FF  ; Emoji_Presentation   #  8.0  [8] (🏸..🏿)    badminton..dark skin tone
+1F400..1F43E  ; Emoji_Presentation   #  6.0 [63] (🐀..🐾)    rat..paw prints
+1F440         ; Emoji_Presentation   #  6.0  [1] (👀)       eyes
+1F442..1F4F7  ; Emoji_Presentation   #  6.0[182] (👂..📷)    ear..camera
+1F4F8         ; Emoji_Presentation   #  7.0  [1] (📸)       camera with flash
+1F4F9..1F4FC  ; Emoji_Presentation   #  6.0  [4] (📹..📼)    video camera..videocassette
+1F4FF         ; Emoji_Presentation   #  8.0  [1] (📿)       prayer beads
+1F500..1F53D  ; Emoji_Presentation   #  6.0 [62] (🔀..🔽)    shuffle tracks button..downwards button
+1F54B..1F54E  ; Emoji_Presentation   #  8.0  [4] (🕋..🕎)    kaaba..menorah
+1F550..1F567  ; Emoji_Presentation   #  6.0 [24] (🕐..🕧)    one o’clock..twelve-thirty
+1F57A         ; Emoji_Presentation   #  9.0  [1] (🕺)       man dancing
+1F595..1F596  ; Emoji_Presentation   #  7.0  [2] (🖕..🖖)    middle finger..vulcan salute
+1F5A4         ; Emoji_Presentation   #  9.0  [1] (🖤)       black heart
+1F5FB..1F5FF  ; Emoji_Presentation   #  6.0  [5] (🗻..🗿)    mount fuji..moai
+1F600         ; Emoji_Presentation   #  6.1  [1] (😀)       grinning face
+1F601..1F610  ; Emoji_Presentation   #  6.0 [16] (😁..😐)    beaming face with smiling eyes..neutral face
+1F611         ; Emoji_Presentation   #  6.1  [1] (😑)       expressionless face
+1F612..1F614  ; Emoji_Presentation   #  6.0  [3] (😒..😔)    unamused face..pensive face
+1F615         ; Emoji_Presentation   #  6.1  [1] (😕)       confused face
+1F616         ; Emoji_Presentation   #  6.0  [1] (😖)       confounded face
+1F617         ; Emoji_Presentation   #  6.1  [1] (😗)       kissing face
+1F618         ; Emoji_Presentation   #  6.0  [1] (😘)       face blowing a kiss
+1F619         ; Emoji_Presentation   #  6.1  [1] (😙)       kissing face with smiling eyes
+1F61A         ; Emoji_Presentation   #  6.0  [1] (😚)       kissing face with closed eyes
+1F61B         ; Emoji_Presentation   #  6.1  [1] (😛)       face with tongue
+1F61C..1F61E  ; Emoji_Presentation   #  6.0  [3] (😜..😞)    winking face with tongue..disappointed face
+1F61F         ; Emoji_Presentation   #  6.1  [1] (😟)       worried face
+1F620..1F625  ; Emoji_Presentation   #  6.0  [6] (😠..😥)    angry face..sad but relieved face
+1F626..1F627  ; Emoji_Presentation   #  6.1  [2] (😦..😧)    frowning face with open mouth..anguished face
+1F628..1F62B  ; Emoji_Presentation   #  6.0  [4] (😨..😫)    fearful face..tired face
+1F62C         ; Emoji_Presentation   #  6.1  [1] (😬)       grimacing face
+1F62D         ; Emoji_Presentation   #  6.0  [1] (😭)       loudly crying face
+1F62E..1F62F  ; Emoji_Presentation   #  6.1  [2] (😮..😯)    face with open mouth..hushed face
+1F630..1F633  ; Emoji_Presentation   #  6.0  [4] (😰..😳)    anxious face with sweat..flushed face
+1F634         ; Emoji_Presentation   #  6.1  [1] (😴)       sleeping face
+1F635..1F640  ; Emoji_Presentation   #  6.0 [12] (😵..🙀)    dizzy face..weary cat face
+1F641..1F642  ; Emoji_Presentation   #  7.0  [2] (🙁..🙂)    slightly frowning face..slightly smiling face
+1F643..1F644  ; Emoji_Presentation   #  8.0  [2] (🙃..🙄)    upside-down face..face with rolling eyes
+1F645..1F64F  ; Emoji_Presentation   #  6.0 [11] (🙅..🙏)    person gesturing NO..folded hands
+1F680..1F6C5  ; Emoji_Presentation   #  6.0 [70] (🚀..🛅)    rocket..left luggage
+1F6CC         ; Emoji_Presentation   #  7.0  [1] (🛌)       person in bed
+1F6D0         ; Emoji_Presentation   #  8.0  [1] (🛐)       place of worship
+1F6D1..1F6D2  ; Emoji_Presentation   #  9.0  [2] (🛑..🛒)    stop sign..shopping cart
+1F6EB..1F6EC  ; Emoji_Presentation   #  7.0  [2] (🛫..🛬)    airplane departure..airplane arrival
+1F6F4..1F6F6  ; Emoji_Presentation   #  9.0  [3] (🛴..🛶)    kick scooter..canoe
+1F6F7..1F6F8  ; Emoji_Presentation   # 10.0  [2] (🛷..🛸)    sled..flying saucer
+1F6F9         ; Emoji_Presentation   # 11.0  [1] (🛹)       skateboard
+1F910..1F918  ; Emoji_Presentation   #  8.0  [9] (🤐..🤘)    zipper-mouth face..sign of the horns
+1F919..1F91E  ; Emoji_Presentation   #  9.0  [6] (🤙..🤞)    call me hand..crossed fingers
+1F91F         ; Emoji_Presentation   # 10.0  [1] (🤟)       love-you gesture
+1F920..1F927  ; Emoji_Presentation   #  9.0  [8] (🤠..🤧)    cowboy hat face..sneezing face
+1F928..1F92F  ; Emoji_Presentation   # 10.0  [8] (🤨..🤯)    face with raised eyebrow..exploding head
+1F930         ; Emoji_Presentation   #  9.0  [1] (🤰)       pregnant woman
+1F931..1F932  ; Emoji_Presentation   # 10.0  [2] (🤱..🤲)    breast-feeding..palms up together
+1F933..1F93A  ; Emoji_Presentation   #  9.0  [8] (🤳..🤺)    selfie..person fencing
+1F93C..1F93E  ; Emoji_Presentation   #  9.0  [3] (🤼..🤾)    people wrestling..person playing handball
+1F940..1F945  ; Emoji_Presentation   #  9.0  [6] (🥀..🥅)    wilted flower..goal net
+1F947..1F94B  ; Emoji_Presentation   #  9.0  [5] (🥇..🥋)    1st place medal..martial arts uniform
+1F94C         ; Emoji_Presentation   # 10.0  [1] (🥌)       curling stone
+1F94D..1F94F  ; Emoji_Presentation   # 11.0  [3] (🥍..🥏)    lacrosse..flying disc
+1F950..1F95E  ; Emoji_Presentation   #  9.0 [15] (🥐..🥞)    croissant..pancakes
+1F95F..1F96B  ; Emoji_Presentation   # 10.0 [13] (🥟..🥫)    dumpling..canned food
+1F96C..1F970  ; Emoji_Presentation   # 11.0  [5] (🥬..🥰)    leafy green..smiling face with 3 hearts
+1F973..1F976  ; Emoji_Presentation   # 11.0  [4] (🥳..🥶)    partying face..cold face
+1F97A         ; Emoji_Presentation   # 11.0  [1] (🥺)       pleading face
+1F97C..1F97F  ; Emoji_Presentation   # 11.0  [4] (🥼..🥿)    lab coat..woman’s flat shoe
+1F980..1F984  ; Emoji_Presentation   #  8.0  [5] (🦀..🦄)    crab..unicorn face
+1F985..1F991  ; Emoji_Presentation   #  9.0 [13] (🦅..🦑)    eagle..squid
+1F992..1F997  ; Emoji_Presentation   # 10.0  [6] (🦒..🦗)    giraffe..cricket
+1F998..1F9A2  ; Emoji_Presentation   # 11.0 [11] (🦘..🦢)    kangaroo..swan
+1F9B0..1F9B9  ; Emoji_Presentation   # 11.0 [10] (🦰..🦹)    red-haired..supervillain
+1F9C0         ; Emoji_Presentation   #  8.0  [1] (🧀)       cheese wedge
+1F9C1..1F9C2  ; Emoji_Presentation   # 11.0  [2] (🧁..🧂)    cupcake..salt
+1F9D0..1F9E6  ; Emoji_Presentation   # 10.0 [23] (🧐..🧦)    face with monocle..socks
+1F9E7..1F9FF  ; Emoji_Presentation   # 11.0 [25] (🧧..🧿)    red envelope..nazar amulet
+
+# Total elements: 1032
+
+# ================================================
+
+# All omitted code points have Emoji_Modifier=No 
+# @missing: 0000..10FFFF  ; Emoji_Modifier ; No
+
+1F3FB..1F3FF  ; Emoji_Modifier       #  8.0  [5] (🏻..🏿)    light skin tone..dark skin tone
+
+# Total elements: 5
+
+# ================================================
+
+# All omitted code points have Emoji_Modifier_Base=No 
+# @missing: 0000..10FFFF  ; Emoji_Modifier_Base ; No
+
+261D          ; Emoji_Modifier_Base  #  1.1  [1] (☝️)       index pointing up
+26F9          ; Emoji_Modifier_Base  #  5.2  [1] (⛹️)       person bouncing ball
+270A..270B    ; Emoji_Modifier_Base  #  6.0  [2] (✊..✋)    raised fist..raised hand
+270C..270D    ; Emoji_Modifier_Base  #  1.1  [2] (✌️..✍️)    victory hand..writing hand
+1F385         ; Emoji_Modifier_Base  #  6.0  [1] (🎅)       Santa Claus
+1F3C2..1F3C4  ; Emoji_Modifier_Base  #  6.0  [3] (🏂..🏄)    snowboarder..person surfing
+1F3C7         ; Emoji_Modifier_Base  #  6.0  [1] (🏇)       horse racing
+1F3CA         ; Emoji_Modifier_Base  #  6.0  [1] (🏊)       person swimming
+1F3CB..1F3CC  ; Emoji_Modifier_Base  #  7.0  [2] (🏋️..🏌️)    person lifting weights..person golfing
+1F442..1F443  ; Emoji_Modifier_Base  #  6.0  [2] (👂..👃)    ear..nose
+1F446..1F450  ; Emoji_Modifier_Base  #  6.0 [11] (👆..👐)    backhand index pointing up..open hands
+1F466..1F469  ; Emoji_Modifier_Base  #  6.0  [4] (👦..👩)    boy..woman
+1F46E         ; Emoji_Modifier_Base  #  6.0  [1] (👮)       police officer
+1F470..1F478  ; Emoji_Modifier_Base  #  6.0  [9] (👰..👸)    bride with veil..princess
+1F47C         ; Emoji_Modifier_Base  #  6.0  [1] (👼)       baby angel
+1F481..1F483  ; Emoji_Modifier_Base  #  6.0  [3] (💁..💃)    person tipping hand..woman dancing
+1F485..1F487  ; Emoji_Modifier_Base  #  6.0  [3] (💅..💇)    nail polish..person getting haircut
+1F4AA         ; Emoji_Modifier_Base  #  6.0  [1] (💪)       flexed biceps
+1F574..1F575  ; Emoji_Modifier_Base  #  7.0  [2] (🕴️..🕵️)    man in suit levitating..detective
+1F57A         ; Emoji_Modifier_Base  #  9.0  [1] (🕺)       man dancing
+1F590         ; Emoji_Modifier_Base  #  7.0  [1] (🖐️)       hand with fingers splayed
+1F595..1F596  ; Emoji_Modifier_Base  #  7.0  [2] (🖕..🖖)    middle finger..vulcan salute
+1F645..1F647  ; Emoji_Modifier_Base  #  6.0  [3] (🙅..🙇)    person gesturing NO..person bowing
+1F64B..1F64F  ; Emoji_Modifier_Base  #  6.0  [5] (🙋..🙏)    person raising hand..folded hands
+1F6A3         ; Emoji_Modifier_Base  #  6.0  [1] (🚣)       person rowing boat
+1F6B4..1F6B6  ; Emoji_Modifier_Base  #  6.0  [3] (🚴..🚶)    person biking..person walking
+1F6C0         ; Emoji_Modifier_Base  #  6.0  [1] (🛀)       person taking bath
+1F6CC         ; Emoji_Modifier_Base  #  7.0  [1] (🛌)       person in bed
+1F918         ; Emoji_Modifier_Base  #  8.0  [1] (🤘)       sign of the horns
+1F919..1F91C  ; Emoji_Modifier_Base  #  9.0  [4] (🤙..🤜)    call me hand..right-facing fist
+1F91E         ; Emoji_Modifier_Base  #  9.0  [1] (🤞)       crossed fingers
+1F91F         ; Emoji_Modifier_Base  # 10.0  [1] (🤟)       love-you gesture
+1F926         ; Emoji_Modifier_Base  #  9.0  [1] (🤦)       person facepalming
+1F930         ; Emoji_Modifier_Base  #  9.0  [1] (🤰)       pregnant woman
+1F931..1F932  ; Emoji_Modifier_Base  # 10.0  [2] (🤱..🤲)    breast-feeding..palms up together
+1F933..1F939  ; Emoji_Modifier_Base  #  9.0  [7] (🤳..🤹)    selfie..person juggling
+1F93D..1F93E  ; Emoji_Modifier_Base  #  9.0  [2] (🤽..🤾)    person playing water polo..person playing handball
+1F9B5..1F9B6  ; Emoji_Modifier_Base  # 11.0  [2] (🦵..🦶)    leg..foot
+1F9B8..1F9B9  ; Emoji_Modifier_Base  # 11.0  [2] (🦸..🦹)    superhero..supervillain
+1F9D1..1F9DD  ; Emoji_Modifier_Base  # 10.0 [13] (🧑..🧝)    adult..elf
+
+# Total elements: 106
+
+# ================================================
+
+# All omitted code points have Emoji_Component=No 
+# @missing: 0000..10FFFF  ; Emoji_Component ; No
+
+0023          ; Emoji_Component      #  1.1  [1] (#️)       number sign
+002A          ; Emoji_Component      #  1.1  [1] (*️)       asterisk
+0030..0039    ; Emoji_Component      #  1.1 [10] (0️..9️)    digit zero..digit nine
+200D          ; Emoji_Component      #  1.1  [1] (‍)        zero width joiner
+20E3          ; Emoji_Component      #  3.0  [1] (⃣)       combining enclosing keycap
+FE0F          ; Emoji_Component      #  3.2  [1] ()        VARIATION SELECTOR-16
+1F1E6..1F1FF  ; Emoji_Component      #  6.0 [26] (🇦..🇿)    regional indicator symbol letter a..regional indicator symbol letter z
+1F3FB..1F3FF  ; Emoji_Component      #  8.0  [5] (🏻..🏿)    light skin tone..dark skin tone
+1F9B0..1F9B3  ; Emoji_Component      # 11.0  [4] (🦰..🦳)    red-haired..white-haired
+E0020..E007F  ; Emoji_Component      #  3.1 [96] (󠀠..󠁿)      tag space..cancel tag
+
+# Total elements: 146
+
+# ================================================
+
+# All omitted code points have Extended_Pictographic=No 
+# @missing: 0000..10FFFF  ; Extended_Pictographic ; No
+
+00A9          ; Extended_Pictographic#  1.1  [1] (©️)       copyright
+00AE          ; Extended_Pictographic#  1.1  [1] (®️)       registered
+203C          ; Extended_Pictographic#  1.1  [1] (‼️)       double exclamation mark
+2049          ; Extended_Pictographic#  3.0  [1] (⁉️)       exclamation question mark
+2122          ; Extended_Pictographic#  1.1  [1] (™️)       trade mark
+2139          ; Extended_Pictographic#  3.0  [1] (ℹ️)       information
+2194..2199    ; Extended_Pictographic#  1.1  [6] (↔️..↙️)    left-right arrow..down-left arrow
+21A9..21AA    ; Extended_Pictographic#  1.1  [2] (↩️..↪️)    right arrow curving left..left arrow curving right
+231A..231B    ; Extended_Pictographic#  1.1  [2] (⌚..⌛)    watch..hourglass done
+2328          ; Extended_Pictographic#  1.1  [1] (⌨️)       keyboard
+2388          ; Extended_Pictographic#  3.0  [1] (⎈️)       HELM SYMBOL
+23CF          ; Extended_Pictographic#  4.0  [1] (⏏️)       eject button
+23E9..23F3    ; Extended_Pictographic#  6.0 [11] (⏩..⏳)    fast-forward button..hourglass not done
+23F8..23FA    ; Extended_Pictographic#  7.0  [3] (⏸️..⏺️)    pause button..record button
+24C2          ; Extended_Pictographic#  1.1  [1] (Ⓜ️)       circled M
+25AA..25AB    ; Extended_Pictographic#  1.1  [2] (▪️..▫️)    black small square..white small square
+25B6          ; Extended_Pictographic#  1.1  [1] (▶️)       play button
+25C0          ; Extended_Pictographic#  1.1  [1] (◀️)       reverse button
+25FB..25FE    ; Extended_Pictographic#  3.2  [4] (◻️..◾)    white medium square..black medium-small square
+2600..2605    ; Extended_Pictographic#  1.1  [6] (☀️..★️)    sun..BLACK STAR
+2607..2612    ; Extended_Pictographic#  1.1 [12] (☇️..☒️)    LIGHTNING..BALLOT BOX WITH X
+2614..2615    ; Extended_Pictographic#  4.0  [2] (☔..☕)    umbrella with rain drops..hot beverage
+2616..2617    ; Extended_Pictographic#  3.2  [2] (☖️..☗️)    WHITE SHOGI PIECE..BLACK SHOGI PIECE
+2618          ; Extended_Pictographic#  4.1  [1] (☘️)       shamrock
+2619          ; Extended_Pictographic#  3.0  [1] (☙️)       REVERSED ROTATED FLORAL HEART BULLET
+261A..266F    ; Extended_Pictographic#  1.1 [86] (☚️..♯️)    BLACK LEFT POINTING INDEX..MUSIC SHARP SIGN
+2670..2671    ; Extended_Pictographic#  3.0  [2] (♰️..♱️)    WEST SYRIAC CROSS..EAST SYRIAC CROSS
+2672..267D    ; Extended_Pictographic#  3.2 [12] (♲️..♽️)    UNIVERSAL RECYCLING SYMBOL..PARTIALLY-RECYCLED PAPER SYMBOL
+267E..267F    ; Extended_Pictographic#  4.1  [2] (♾️..♿)    infinity..wheelchair symbol
+2680..2685    ; Extended_Pictographic#  3.2  [6] (⚀️..⚅️)    DIE FACE-1..DIE FACE-6
+2690..2691    ; Extended_Pictographic#  4.0  [2] (⚐️..⚑️)    WHITE FLAG..BLACK FLAG
+2692..269C    ; Extended_Pictographic#  4.1 [11] (⚒️..⚜️)    hammer and pick..fleur-de-lis
+269D          ; Extended_Pictographic#  5.1  [1] (⚝️)       OUTLINED WHITE STAR
+269E..269F    ; Extended_Pictographic#  5.2  [2] (⚞️..⚟️)    THREE LINES CONVERGING RIGHT..THREE LINES CONVERGING LEFT
+26A0..26A1    ; Extended_Pictographic#  4.0  [2] (⚠️..⚡)    warning..high voltage
+26A2..26B1    ; Extended_Pictographic#  4.1 [16] (⚢️..⚱️)    DOUBLED FEMALE SIGN..funeral urn
+26B2          ; Extended_Pictographic#  5.0  [1] (⚲️)       NEUTER
+26B3..26BC    ; Extended_Pictographic#  5.1 [10] (⚳️..⚼️)    CERES..SESQUIQUADRATE
+26BD..26BF    ; Extended_Pictographic#  5.2  [3] (⚽..⚿️)    soccer ball..SQUARED KEY
+26C0..26C3    ; Extended_Pictographic#  5.1  [4] (⛀️..⛃️)    WHITE DRAUGHTS MAN..BLACK DRAUGHTS KING
+26C4..26CD    ; Extended_Pictographic#  5.2 [10] (⛄..⛍️)    snowman without snow..DISABLED CAR
+26CE          ; Extended_Pictographic#  6.0  [1] (⛎)       Ophiuchus
+26CF..26E1    ; Extended_Pictographic#  5.2 [19] (⛏️..⛡️)    pick..RESTRICTED LEFT ENTRY-2
+26E2          ; Extended_Pictographic#  6.0  [1] (⛢️)       ASTRONOMICAL SYMBOL FOR URANUS
+26E3          ; Extended_Pictographic#  5.2  [1] (⛣️)       HEAVY CIRCLE WITH STROKE AND TWO DOTS ABOVE
+26E4..26E7    ; Extended_Pictographic#  6.0  [4] (⛤️..⛧️)    PENTAGRAM..INVERTED PENTAGRAM
+26E8..26FF    ; Extended_Pictographic#  5.2 [24] (⛨️..⛿️)    BLACK CROSS ON SHIELD..WHITE FLAG WITH HORIZONTAL MIDDLE BLACK STRIPE
+2700          ; Extended_Pictographic#  7.0  [1] (✀️)       BLACK SAFETY SCISSORS
+2701..2704    ; Extended_Pictographic#  1.1  [4] (✁️..✄️)    UPPER BLADE SCISSORS..WHITE SCISSORS
+2705          ; Extended_Pictographic#  6.0  [1] (✅)       white heavy check mark
+2708..2709    ; Extended_Pictographic#  1.1  [2] (✈️..✉️)    airplane..envelope
+270A..270B    ; Extended_Pictographic#  6.0  [2] (✊..✋)    raised fist..raised hand
+270C..2712    ; Extended_Pictographic#  1.1  [7] (✌️..✒️)    victory hand..black nib
+2714          ; Extended_Pictographic#  1.1  [1] (✔️)       heavy check mark
+2716          ; Extended_Pictographic#  1.1  [1] (✖️)       heavy multiplication x
+271D          ; Extended_Pictographic#  1.1  [1] (✝️)       latin cross
+2721          ; Extended_Pictographic#  1.1  [1] (✡️)       star of David
+2728          ; Extended_Pictographic#  6.0  [1] (✨)       sparkles
+2733..2734    ; Extended_Pictographic#  1.1  [2] (✳️..✴️)    eight-spoked asterisk..eight-pointed star
+2744          ; Extended_Pictographic#  1.1  [1] (❄️)       snowflake
+2747          ; Extended_Pictographic#  1.1  [1] (❇️)       sparkle
+274C          ; Extended_Pictographic#  6.0  [1] (❌)       cross mark
+274E          ; Extended_Pictographic#  6.0  [1] (❎)       cross mark button
+2753..2755    ; Extended_Pictographic#  6.0  [3] (❓..❕)    question mark..white exclamation mark
+2757          ; Extended_Pictographic#  5.2  [1] (❗)       exclamation mark
+2763..2767    ; Extended_Pictographic#  1.1  [5] (❣️..❧️)    heavy heart exclamation..ROTATED FLORAL HEART BULLET
+2795..2797    ; Extended_Pictographic#  6.0  [3] (➕..➗)    heavy plus sign..heavy division sign
+27A1          ; Extended_Pictographic#  1.1  [1] (➡️)       right arrow
+27B0          ; Extended_Pictographic#  6.0  [1] (➰)       curly loop
+27BF          ; Extended_Pictographic#  6.0  [1] (➿)       double curly loop
+2934..2935    ; Extended_Pictographic#  3.2  [2] (⤴️..⤵️)    right arrow curving up..right arrow curving down
+2B05..2B07    ; Extended_Pictographic#  4.0  [3] (⬅️..⬇️)    left arrow..down arrow
+2B1B..2B1C    ; Extended_Pictographic#  5.1  [2] (⬛..⬜)    black large square..white large square
+2B50          ; Extended_Pictographic#  5.1  [1] (⭐)       star
+2B55          ; Extended_Pictographic#  5.2  [1] (⭕)       heavy large circle
+3030          ; Extended_Pictographic#  1.1  [1] (〰️)       wavy dash
+303D          ; Extended_Pictographic#  3.2  [1] (〽️)       part alternation mark
+3297          ; Extended_Pictographic#  1.1  [1] (㊗️)       Japanese “congratulations” button
+3299          ; Extended_Pictographic#  1.1  [1] (㊙️)       Japanese “secret” button
+1F000..1F02B  ; Extended_Pictographic#  5.1 [44] (🀀️..🀫️)    MAHJONG TILE EAST WIND..MAHJONG TILE BACK
+1F02C..1F02F  ; Extended_Pictographic#   NA  [4] (🀬️..🀯️)    <reserved-1F02C>..<reserved-1F02F>
+1F030..1F093  ; Extended_Pictographic#  5.1[100] (🀰️..🂓️)    DOMINO TILE HORIZONTAL BACK..DOMINO TILE VERTICAL-06-06
+1F094..1F09F  ; Extended_Pictographic#   NA [12] (🂔️..🂟️)    <reserved-1F094>..<reserved-1F09F>
+1F0A0..1F0AE  ; Extended_Pictographic#  6.0 [15] (🂠️..🂮️)    PLAYING CARD BACK..PLAYING CARD KING OF SPADES
+1F0AF..1F0B0  ; Extended_Pictographic#   NA  [2] (🂯️..🂰️)    <reserved-1F0AF>..<reserved-1F0B0>
+1F0B1..1F0BE  ; Extended_Pictographic#  6.0 [14] (🂱️..🂾️)    PLAYING CARD ACE OF HEARTS..PLAYING CARD KING OF HEARTS
+1F0BF         ; Extended_Pictographic#  7.0  [1] (🂿️)       PLAYING CARD RED JOKER
+1F0C0         ; Extended_Pictographic#   NA  [1] (🃀️)       <reserved-1F0C0>
+1F0C1..1F0CF  ; Extended_Pictographic#  6.0 [15] (🃁️..🃏)    PLAYING CARD ACE OF DIAMONDS..joker
+1F0D0         ; Extended_Pictographic#   NA  [1] (🃐️)       <reserved-1F0D0>
+1F0D1..1F0DF  ; Extended_Pictographic#  6.0 [15] (🃑️..🃟️)    PLAYING CARD ACE OF CLUBS..PLAYING CARD WHITE JOKER
+1F0E0..1F0F5  ; Extended_Pictographic#  7.0 [22] (🃠️..🃵️)    PLAYING CARD FOOL..PLAYING CARD TRUMP-21
+1F0F6..1F0FF  ; Extended_Pictographic#   NA [10] (🃶️..🃿️)    <reserved-1F0F6>..<reserved-1F0FF>
+1F10D..1F10F  ; Extended_Pictographic#   NA  [3] (🄍️..🄏️)    <reserved-1F10D>..<reserved-1F10F>
+1F12F         ; Extended_Pictographic# 11.0  [1] (🄯️)       COPYLEFT SYMBOL
+1F16C..1F16F  ; Extended_Pictographic#   NA  [4] (🅬️..🅯️)    <reserved-1F16C>..<reserved-1F16F>
+1F170..1F171  ; Extended_Pictographic#  6.0  [2] (🅰️..🅱️)    A button (blood type)..B button (blood type)
+1F17E         ; Extended_Pictographic#  6.0  [1] (🅾️)       O button (blood type)
+1F17F         ; Extended_Pictographic#  5.2  [1] (🅿️)       P button
+1F18E         ; Extended_Pictographic#  6.0  [1] (🆎)       AB button (blood type)
+1F191..1F19A  ; Extended_Pictographic#  6.0 [10] (🆑..🆚)    CL button..VS button
+1F1AD..1F1E5  ; Extended_Pictographic#   NA [57] (🆭️..🇥️)    <reserved-1F1AD>..<reserved-1F1E5>
+1F201..1F202  ; Extended_Pictographic#  6.0  [2] (🈁..🈂️)    Japanese “here” button..Japanese “service charge” button
+1F203..1F20F  ; Extended_Pictographic#   NA [13] (🈃️..🈏️)    <reserved-1F203>..<reserved-1F20F>
+1F21A         ; Extended_Pictographic#  5.2  [1] (🈚)       Japanese “free of charge” button
+1F22F         ; Extended_Pictographic#  5.2  [1] (🈯)       Japanese “reserved” button
+1F232..1F23A  ; Extended_Pictographic#  6.0  [9] (🈲..🈺)    Japanese “prohibited” button..Japanese “open for business” button
+1F23C..1F23F  ; Extended_Pictographic#   NA  [4] (🈼️..🈿️)    <reserved-1F23C>..<reserved-1F23F>
+1F249..1F24F  ; Extended_Pictographic#   NA  [7] (🉉️..🉏️)    <reserved-1F249>..<reserved-1F24F>
+1F250..1F251  ; Extended_Pictographic#  6.0  [2] (🉐..🉑)    Japanese “bargain” button..Japanese “acceptable” button
+1F252..1F25F  ; Extended_Pictographic#   NA [14] (🉒️..🉟️)    <reserved-1F252>..<reserved-1F25F>
+1F260..1F265  ; Extended_Pictographic# 10.0  [6] (🉠️..🉥️)    ROUNDED SYMBOL FOR FU..ROUNDED SYMBOL FOR CAI
+1F266..1F2FF  ; Extended_Pictographic#   NA[154] (🉦️..🋿️)    <reserved-1F266>..<reserved-1F2FF>
+1F300..1F320  ; Extended_Pictographic#  6.0 [33] (🌀..🌠)    cyclone..shooting star
+1F321..1F32C  ; Extended_Pictographic#  7.0 [12] (🌡️..🌬️)    thermometer..wind face
+1F32D..1F32F  ; Extended_Pictographic#  8.0  [3] (🌭..🌯)    hot dog..burrito
+1F330..1F335  ; Extended_Pictographic#  6.0  [6] (🌰..🌵)    chestnut..cactus
+1F336         ; Extended_Pictographic#  7.0  [1] (🌶️)       hot pepper
+1F337..1F37C  ; Extended_Pictographic#  6.0 [70] (🌷..🍼)    tulip..baby bottle
+1F37D         ; Extended_Pictographic#  7.0  [1] (🍽️)       fork and knife with plate
+1F37E..1F37F  ; Extended_Pictographic#  8.0  [2] (🍾..🍿)    bottle with popping cork..popcorn
+1F380..1F393  ; Extended_Pictographic#  6.0 [20] (🎀..🎓)    ribbon..graduation cap
+1F394..1F39F  ; Extended_Pictographic#  7.0 [12] (🎔️..🎟️)    HEART WITH TIP ON THE LEFT..admission tickets
+1F3A0..1F3C4  ; Extended_Pictographic#  6.0 [37] (🎠..🏄)    carousel horse..person surfing
+1F3C5         ; Extended_Pictographic#  7.0  [1] (🏅)       sports medal
+1F3C6..1F3CA  ; Extended_Pictographic#  6.0  [5] (🏆..🏊)    trophy..person swimming
+1F3CB..1F3CE  ; Extended_Pictographic#  7.0  [4] (🏋️..🏎️)    person lifting weights..racing car
+1F3CF..1F3D3  ; Extended_Pictographic#  8.0  [5] (🏏..🏓)    cricket game..ping pong
+1F3D4..1F3DF  ; Extended_Pictographic#  7.0 [12] (🏔️..🏟️)    snow-capped mountain..stadium
+1F3E0..1F3F0  ; Extended_Pictographic#  6.0 [17] (🏠..🏰)    house..castle
+1F3F1..1F3F7  ; Extended_Pictographic#  7.0  [7] (🏱️..🏷️)    WHITE PENNANT..label
+1F3F8..1F3FA  ; Extended_Pictographic#  8.0  [3] (🏸..🏺)    badminton..amphora
+1F400..1F43E  ; Extended_Pictographic#  6.0 [63] (🐀..🐾)    rat..paw prints
+1F43F         ; Extended_Pictographic#  7.0  [1] (🐿️)       chipmunk
+1F440         ; Extended_Pictographic#  6.0  [1] (👀)       eyes
+1F441         ; Extended_Pictographic#  7.0  [1] (👁️)       eye
+1F442..1F4F7  ; Extended_Pictographic#  6.0[182] (👂..📷)    ear..camera
+1F4F8         ; Extended_Pictographic#  7.0  [1] (📸)       camera with flash
+1F4F9..1F4FC  ; Extended_Pictographic#  6.0  [4] (📹..📼)    video camera..videocassette
+1F4FD..1F4FE  ; Extended_Pictographic#  7.0  [2] (📽️..📾️)    film projector..PORTABLE STEREO
+1F4FF         ; Extended_Pictographic#  8.0  [1] (📿)       prayer beads
+1F500..1F53D  ; Extended_Pictographic#  6.0 [62] (🔀..🔽)    shuffle tracks button..downwards button
+1F546..1F54A  ; Extended_Pictographic#  7.0  [5] (🕆️..🕊️)    WHITE LATIN CROSS..dove
+1F54B..1F54F  ; Extended_Pictographic#  8.0  [5] (🕋..🕏️)    kaaba..BOWL OF HYGIEIA
+1F550..1F567  ; Extended_Pictographic#  6.0 [24] (🕐..🕧)    one o’clock..twelve-thirty
+1F568..1F579  ; Extended_Pictographic#  7.0 [18] (🕨️..🕹️)    RIGHT SPEAKER..joystick
+1F57A         ; Extended_Pictographic#  9.0  [1] (🕺)       man dancing
+1F57B..1F5A3  ; Extended_Pictographic#  7.0 [41] (🕻️..🖣️)    LEFT HAND TELEPHONE RECEIVER..BLACK DOWN POINTING BACKHAND INDEX
+1F5A4         ; Extended_Pictographic#  9.0  [1] (🖤)       black heart
+1F5A5..1F5FA  ; Extended_Pictographic#  7.0 [86] (🖥️..🗺️)    desktop computer..world map
+1F5FB..1F5FF  ; Extended_Pictographic#  6.0  [5] (🗻..🗿)    mount fuji..moai
+1F600         ; Extended_Pictographic#  6.1  [1] (😀)       grinning face
+1F601..1F610  ; Extended_Pictographic#  6.0 [16] (😁..😐)    beaming face with smiling eyes..neutral face
+1F611         ; Extended_Pictographic#  6.1  [1] (😑)       expressionless face
+1F612..1F614  ; Extended_Pictographic#  6.0  [3] (😒..😔)    unamused face..pensive face
+1F615         ; Extended_Pictographic#  6.1  [1] (😕)       confused face
+1F616         ; Extended_Pictographic#  6.0  [1] (😖)       confounded face
+1F617         ; Extended_Pictographic#  6.1  [1] (😗)       kissing face
+1F618         ; Extended_Pictographic#  6.0  [1] (😘)       face blowing a kiss
+1F619         ; Extended_Pictographic#  6.1  [1] (😙)       kissing face with smiling eyes
+1F61A         ; Extended_Pictographic#  6.0  [1] (😚)       kissing face with closed eyes
+1F61B         ; Extended_Pictographic#  6.1  [1] (😛)       face with tongue
+1F61C..1F61E  ; Extended_Pictographic#  6.0  [3] (😜..😞)    winking face with tongue..disappointed face
+1F61F         ; Extended_Pictographic#  6.1  [1] (😟)       worried face
+1F620..1F625  ; Extended_Pictographic#  6.0  [6] (😠..😥)    angry face..sad but relieved face
+1F626..1F627  ; Extended_Pictographic#  6.1  [2] (😦..😧)    frowning face with open mouth..anguished face
+1F628..1F62B  ; Extended_Pictographic#  6.0  [4] (😨..😫)    fearful face..tired face
+1F62C         ; Extended_Pictographic#  6.1  [1] (😬)       grimacing face
+1F62D         ; Extended_Pictographic#  6.0  [1] (😭)       loudly crying face
+1F62E..1F62F  ; Extended_Pictographic#  6.1  [2] (😮..😯)    face with open mouth..hushed face
+1F630..1F633  ; Extended_Pictographic#  6.0  [4] (😰..😳)    anxious face with sweat..flushed face
+1F634         ; Extended_Pictographic#  6.1  [1] (😴)       sleeping face
+1F635..1F640  ; Extended_Pictographic#  6.0 [12] (😵..🙀)    dizzy face..weary cat face
+1F641..1F642  ; Extended_Pictographic#  7.0  [2] (🙁..🙂)    slightly frowning face..slightly smiling face
+1F643..1F644  ; Extended_Pictographic#  8.0  [2] (🙃..🙄)    upside-down face..face with rolling eyes
+1F645..1F64F  ; Extended_Pictographic#  6.0 [11] (🙅..🙏)    person gesturing NO..folded hands
+1F680..1F6C5  ; Extended_Pictographic#  6.0 [70] (🚀..🛅)    rocket..left luggage
+1F6C6..1F6CF  ; Extended_Pictographic#  7.0 [10] (🛆️..🛏️)    TRIANGLE WITH ROUNDED CORNERS..bed
+1F6D0         ; Extended_Pictographic#  8.0  [1] (🛐)       place of worship
+1F6D1..1F6D2  ; Extended_Pictographic#  9.0  [2] (🛑..🛒)    stop sign..shopping cart
+1F6D3..1F6D4  ; Extended_Pictographic# 10.0  [2] (🛓️..🛔️)    STUPA..PAGODA
+1F6D5..1F6DF  ; Extended_Pictographic#   NA [11] (🛕️..🛟️)    <reserved-1F6D5>..<reserved-1F6DF>
+1F6E0..1F6EC  ; Extended_Pictographic#  7.0 [13] (🛠️..🛬)    hammer and wrench..airplane arrival
+1F6ED..1F6EF  ; Extended_Pictographic#   NA  [3] (🛭️..🛯️)    <reserved-1F6ED>..<reserved-1F6EF>
+1F6F0..1F6F3  ; Extended_Pictographic#  7.0  [4] (🛰️..🛳️)    satellite..passenger ship
+1F6F4..1F6F6  ; Extended_Pictographic#  9.0  [3] (🛴..🛶)    kick scooter..canoe
+1F6F7..1F6F8  ; Extended_Pictographic# 10.0  [2] (🛷..🛸)    sled..flying saucer
+1F6F9         ; Extended_Pictographic# 11.0  [1] (🛹)       skateboard
+1F6FA..1F6FF  ; Extended_Pictographic#   NA  [6] (🛺️..🛿️)    <reserved-1F6FA>..<reserved-1F6FF>
+1F774..1F77F  ; Extended_Pictographic#   NA [12] (🝴️..🝿️)    <reserved-1F774>..<reserved-1F77F>
+1F7D5..1F7D8  ; Extended_Pictographic# 11.0  [4] (🟕️..🟘️)    CIRCLED TRIANGLE..NEGATIVE CIRCLED SQUARE
+1F7D9..1F7FF  ; Extended_Pictographic#   NA [39] (🟙️..🟿️)    <reserved-1F7D9>..<reserved-1F7FF>
+1F80C..1F80F  ; Extended_Pictographic#   NA  [4] (🠌️..🠏️)    <reserved-1F80C>..<reserved-1F80F>
+1F848..1F84F  ; Extended_Pictographic#   NA  [8] (🡈️..🡏️)    <reserved-1F848>..<reserved-1F84F>
+1F85A..1F85F  ; Extended_Pictographic#   NA  [6] (🡚️..🡟️)    <reserved-1F85A>..<reserved-1F85F>
+1F888..1F88F  ; Extended_Pictographic#   NA  [8] (🢈️..🢏️)    <reserved-1F888>..<reserved-1F88F>
+1F8AE..1F8FF  ; Extended_Pictographic#   NA [82] (🢮️..🣿️)    <reserved-1F8AE>..<reserved-1F8FF>
+1F90C..1F90F  ; Extended_Pictographic#   NA  [4] (🤌️..🤏️)    <reserved-1F90C>..<reserved-1F90F>
+1F910..1F918  ; Extended_Pictographic#  8.0  [9] (🤐..🤘)    zipper-mouth face..sign of the horns
+1F919..1F91E  ; Extended_Pictographic#  9.0  [6] (🤙..🤞)    call me hand..crossed fingers
+1F91F         ; Extended_Pictographic# 10.0  [1] (🤟)       love-you gesture
+1F920..1F927  ; Extended_Pictographic#  9.0  [8] (🤠..🤧)    cowboy hat face..sneezing face
+1F928..1F92F  ; Extended_Pictographic# 10.0  [8] (🤨..🤯)    face with raised eyebrow..exploding head
+1F930         ; Extended_Pictographic#  9.0  [1] (🤰)       pregnant woman
+1F931..1F932  ; Extended_Pictographic# 10.0  [2] (🤱..🤲)    breast-feeding..palms up together
+1F933..1F93A  ; Extended_Pictographic#  9.0  [8] (🤳..🤺)    selfie..person fencing
+1F93C..1F93E  ; Extended_Pictographic#  9.0  [3] (🤼..🤾)    people wrestling..person playing handball
+1F93F         ; Extended_Pictographic#   NA  [1] (🤿️)       <reserved-1F93F>
+1F940..1F945  ; Extended_Pictographic#  9.0  [6] (🥀..🥅)    wilted flower..goal net
+1F947..1F94B  ; Extended_Pictographic#  9.0  [5] (🥇..🥋)    1st place medal..martial arts uniform
+1F94C         ; Extended_Pictographic# 10.0  [1] (🥌)       curling stone
+1F94D..1F94F  ; Extended_Pictographic# 11.0  [3] (🥍..🥏)    lacrosse..flying disc
+1F950..1F95E  ; Extended_Pictographic#  9.0 [15] (🥐..🥞)    croissant..pancakes
+1F95F..1F96B  ; Extended_Pictographic# 10.0 [13] (🥟..🥫)    dumpling..canned food
+1F96C..1F970  ; Extended_Pictographic# 11.0  [5] (🥬..🥰)    leafy green..smiling face with 3 hearts
+1F971..1F972  ; Extended_Pictographic#   NA  [2] (🥱️..🥲️)    <reserved-1F971>..<reserved-1F972>
+1F973..1F976  ; Extended_Pictographic# 11.0  [4] (🥳..🥶)    partying face..cold face
+1F977..1F979  ; Extended_Pictographic#   NA  [3] (🥷️..🥹️)    <reserved-1F977>..<reserved-1F979>
+1F97A         ; Extended_Pictographic# 11.0  [1] (🥺)       pleading face
+1F97B         ; Extended_Pictographic#   NA  [1] (🥻️)       <reserved-1F97B>
+1F97C..1F97F  ; Extended_Pictographic# 11.0  [4] (🥼..🥿)    lab coat..woman’s flat shoe
+1F980..1F984  ; Extended_Pictographic#  8.0  [5] (🦀..🦄)    crab..unicorn face
+1F985..1F991  ; Extended_Pictographic#  9.0 [13] (🦅..🦑)    eagle..squid
+1F992..1F997  ; Extended_Pictographic# 10.0  [6] (🦒..🦗)    giraffe..cricket
+1F998..1F9A2  ; Extended_Pictographic# 11.0 [11] (🦘..🦢)    kangaroo..swan
+1F9A3..1F9AF  ; Extended_Pictographic#   NA [13] (🦣️..🦯️)    <reserved-1F9A3>..<reserved-1F9AF>
+1F9B0..1F9B9  ; Extended_Pictographic# 11.0 [10] (🦰..🦹)    red-haired..supervillain
+1F9BA..1F9BF  ; Extended_Pictographic#   NA  [6] (🦺️..🦿️)    <reserved-1F9BA>..<reserved-1F9BF>
+1F9C0         ; Extended_Pictographic#  8.0  [1] (🧀)       cheese wedge
+1F9C1..1F9C2  ; Extended_Pictographic# 11.0  [2] (🧁..🧂)    cupcake..salt
+1F9C3..1F9CF  ; Extended_Pictographic#   NA [13] (🧃️..🧏️)    <reserved-1F9C3>..<reserved-1F9CF>
+1F9D0..1F9E6  ; Extended_Pictographic# 10.0 [23] (🧐..🧦)    face with monocle..socks
+1F9E7..1F9FF  ; Extended_Pictographic# 11.0 [25] (🧧..🧿)    red envelope..nazar amulet
+1FA00..1FA5F  ; Extended_Pictographic#   NA [96] (🨀️..🩟️)    <reserved-1FA00>..<reserved-1FA5F>
+1FA60..1FA6D  ; Extended_Pictographic# 11.0 [14] (🩠️..🩭️)    XIANGQI RED GENERAL..XIANGQI BLACK SOLDIER
+1FA6E..1FFFD  ; Extended_Pictographic#   NA[1424] (🩮️..🿽️)   <reserved-1FA6E>..<reserved-1FFFD>
+
+# Total elements: 3793
+
+#EOF
diff --git a/lib/stdlib/uc_spec/gen_unicode_mod.escript b/lib/stdlib/uc_spec/gen_unicode_mod.escript
index 535f01a1c5..8636c69a0d 100755..100644
--- a/lib/stdlib/uc_spec/gen_unicode_mod.escript
+++ b/lib/stdlib/uc_spec/gen_unicode_mod.escript
@@ -4,7 +4,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2017. All Rights Reserved.
+%% Copyright Ericsson AB 2017-2019. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -48,13 +48,18 @@ main(_) ->
     ok = file:close(ExclF),
 
     %%  GraphemeBreakProperty table
+    {ok, Emoji} = file:open("../uc_spec/emoji-data.txt", [read, raw, {read_ahead, 1000000}]),
+    Props00 = foldl(fun parse_properties/2, [], Emoji),
+    %% Filter Extended_Pictographic class which we are interested in.
+    Props0 = [EP || {extended_pictographic, _} = EP <- Props00],
+    ok = file:close(Emoji),
     {ok, GBPF} = file:open("../uc_spec/GraphemeBreakProperty.txt", [read, raw, {read_ahead, 1000000}]),
-    Props0 = foldl(fun parse_properties/2, [], GBPF),
+    Props1 = foldl(fun parse_properties/2, Props0, GBPF),
     ok = file:close(GBPF),
     {ok, PropF} = file:open("../uc_spec/PropList.txt", [read, raw, {read_ahead, 1000000}]),
-    Props1 = foldl(fun parse_properties/2, Props0, PropF),
+    Props2 = foldl(fun parse_properties/2, Props1, PropF),
     ok = file:close(PropF),
-    Props = sofs:to_external(sofs:relation_to_family(sofs:relation(Props1))),
+    Props = sofs:to_external(sofs:relation_to_family(sofs:relation(Props2))),
 
     %% Make module
     {ok, Out} = file:open(?MOD++".erl", [write]),
@@ -170,7 +175,7 @@ gen_header(Fd) ->
     io:put_chars(Fd, "-export([spec_version/0, lookup/1, get_case/1]).\n"),
     io:put_chars(Fd, "-inline([class/1]).\n"),
     io:put_chars(Fd, "-compile(nowarn_unused_vars).\n"),
-    io:put_chars(Fd, "-dialyzer({no_improper_lists, [cp/1, gc/1, gc_prepend/2, gc_e_cont/2]}).\n"),
+    io:put_chars(Fd, "-dialyzer({no_improper_lists, [cp/1, gc/1, gc_prepend/2]}).\n"),
     io:put_chars(Fd, "-type gc() :: char()|[char()].\n\n\n"),
     ok.
 
@@ -186,7 +191,7 @@ gen_static(Fd) ->
                  "        {U,L} -> #{upper=>U,lower=>L,title=>U,fold=>L};\n"
                  "        {U,L,T,F} -> #{upper=>U,lower=>L,title=>T,fold=>F}\n"
                  "    end.\n\n"),
-    io:put_chars(Fd, "spec_version() -> {10,0}.\n\n\n"),
+    io:put_chars(Fd, "spec_version() -> {11,0}.\n\n\n"),
     io:put_chars(Fd, "class(Codepoint) -> {CCC,_,_} = unicode_table(Codepoint),\n    CCC.\n\n"),
     io:put_chars(Fd, "-spec uppercase(unicode:chardata()) -> "
                  "maybe_improper_list(gc(),unicode:chardata()).\n"),
@@ -455,17 +460,73 @@ gen_cp(Fd) ->
                  " maybe_improper_list() | {error, unicode:chardata()}.\n"),
     io:put_chars(Fd, "cp([C|_]=L) when is_integer(C) -> L;\n"),
     io:put_chars(Fd, "cp([List]) -> cp(List);\n"),
-    io:put_chars(Fd, "cp([List|R]) ->\n"),
-    io:put_chars(Fd, "    case cp(List) of\n"),
-    io:put_chars(Fd, "        [] -> cp(R);\n"),
-    io:put_chars(Fd, "        [CP] -> [CP|R];\n"),
-    io:put_chars(Fd, "        [C|R0] -> [C|[R0|R]];\n"),
-    io:put_chars(Fd, "        {error,Error} -> {error,[Error|R]}\n"),
-    io:put_chars(Fd, "    end;\n"),
+    io:put_chars(Fd, "cp([List|R]) -> cpl(List, R);\n"),
     io:put_chars(Fd, "cp([]) -> [];\n"),
     io:put_chars(Fd, "cp(<<C/utf8, R/binary>>) -> [C|R];\n"),
     io:put_chars(Fd, "cp(<<>>) -> [];\n"),
-    io:put_chars(Fd, "cp(<<R/binary>>) -> {error,R}.\n\n"),
+    io:put_chars(Fd, "cp(<<R/binary>>) -> {error,R}.\n"),
+    io:put_chars(Fd, "\n"),
+    io:put_chars(Fd, "cpl([C], R) when is_integer(C) -> [C|cpl_1_cont(R)];\n"),
+    io:put_chars(Fd, "cpl([C|T], R) when is_integer(C) -> [C|cpl_cont(T, R)];\n"),
+    io:put_chars(Fd, "cpl([List], R) -> cpl(List, R);\n"),
+    io:put_chars(Fd, "cpl([List|T], R) -> cpl(List, [T|R]);\n"),
+    io:put_chars(Fd, "cpl([], R) -> cp(R);\n"),
+    io:put_chars(Fd, "cpl(<<C/utf8, T/binary>>, R) -> [C,T|R];\n"),
+    io:put_chars(Fd, "cpl(<<>>, R) -> cp(R);\n"),
+    io:put_chars(Fd, "cpl(<<B/binary>>, R) -> {error,[B|R]}.\n"),
+    io:put_chars(Fd, "\n"),
+    io:put_chars(Fd, "%%%\n"),
+    io:put_chars(Fd, "\n"),
+    io:put_chars(Fd, "cpl_cont([C|T], R) when is_integer(C) -> [C|cpl_cont2(T, R)];\n"),
+    io:put_chars(Fd, "cpl_cont([L], R) -> cpl_cont(L, R);\n"),
+    io:put_chars(Fd, "cpl_cont([L|T], R) -> cpl_cont(L, [T|R]);\n"),
+    io:put_chars(Fd, "cpl_cont([], R) -> cpl_1_cont(R);\n"),
+    io:put_chars(Fd, "cpl_cont(T, R) -> [T|R].\n"),
+    io:put_chars(Fd, "\n"),
+    io:put_chars(Fd, "cpl_cont2([C|T], R) when is_integer(C) -> [C|cpl_cont3(T, R)];\n"),
+    io:put_chars(Fd, "cpl_cont2([L], R) -> cpl_cont2(L, R);\n"),
+    io:put_chars(Fd, "cpl_cont2([L|T], R) -> cpl_cont2(L, [T|R]);\n"),
+    io:put_chars(Fd, "cpl_cont2([], R) -> cpl_1_cont2(R);\n"),
+    io:put_chars(Fd, "cpl_cont2(T, R) -> [T|R].\n"),
+    io:put_chars(Fd, "\n"),
+    io:put_chars(Fd, "cpl_cont3([C], R) when is_integer(C) -> [C|R];\n"),
+    io:put_chars(Fd, "cpl_cont3([C|T], R) when is_integer(C) -> [C,T|R];\n"),
+    io:put_chars(Fd, "cpl_cont3([L], R) -> cpl_cont3(L, R);\n"),
+    io:put_chars(Fd, "cpl_cont3([L|T], R) -> cpl_cont3(L, [T|R]);\n"),
+    io:put_chars(Fd, "cpl_cont3([], R) -> cpl_1_cont3(R);\n"),
+    io:put_chars(Fd, "cpl_cont3(T, R) -> [T|R].\n"),
+    io:put_chars(Fd, "\n"),
+    io:put_chars(Fd, "%%%\n"),
+    io:put_chars(Fd, "\n"),
+    io:put_chars(Fd, "cpl_1_cont([C|T]) when is_integer(C) -> [C|cpl_1_cont2(T)];\n"),
+    io:put_chars(Fd, "cpl_1_cont([L]) -> cpl_1_cont(L);\n"),
+    io:put_chars(Fd, "cpl_1_cont([L|T]) -> cpl_cont(L, T);\n"),
+    io:put_chars(Fd, "cpl_1_cont(T) -> T.\n"),
+    io:put_chars(Fd, "\n"),
+    io:put_chars(Fd, "cpl_1_cont2([C|T]) when is_integer(C) -> [C|cpl_1_cont3(T)];\n"),
+    io:put_chars(Fd, "cpl_1_cont2([L]) -> cpl_1_cont2(L);\n"),
+    io:put_chars(Fd, "cpl_1_cont2([L|T]) -> cpl_cont2(L, T);\n"),
+    io:put_chars(Fd, "cpl_1_cont2(T) -> T.\n"),
+    io:put_chars(Fd, "\n"),
+    io:put_chars(Fd, "cpl_1_cont3([C|_]=T) when is_integer(C) -> T;\n"),
+    io:put_chars(Fd, "cpl_1_cont3([L]) -> cpl_1_cont3(L);\n"),
+    io:put_chars(Fd, "cpl_1_cont3([L|T]) -> cpl_cont3(L, T);\n"),
+    io:put_chars(Fd, "cpl_1_cont3(T) -> T.\n"),
+    io:put_chars(Fd, "\n"),
+    io:put_chars(Fd, "%%%\n"),
+    io:put_chars(Fd, "\n"),
+    io:put_chars(Fd, "cp_no_bin([C|_]=L) when is_integer(C) -> L;\n"),
+    io:put_chars(Fd, "cp_no_bin([List]) -> cp_no_bin(List);\n"),
+    io:put_chars(Fd, "cp_no_bin([List|R]) -> cp_no_binl(List, R);\n"),
+    io:put_chars(Fd, "cp_no_bin([]) -> [];\n"),
+    io:put_chars(Fd, "cp_no_bin(_) -> binary_found.\n"),
+    io:put_chars(Fd, "\n"),
+    io:put_chars(Fd, "cp_no_binl([C], R) when is_integer(C) -> [C|cpl_1_cont(R)];\n"),
+    io:put_chars(Fd, "cp_no_binl([C|T], R) when is_integer(C) -> [C|cpl_cont(T, R)];\n"),
+    io:put_chars(Fd, "cp_no_binl([List], R) -> cp_no_binl(List, R);\n"),
+    io:put_chars(Fd, "cp_no_binl([List|T], R) -> cp_no_binl(List, [T|R]);\n"),
+    io:put_chars(Fd, "cp_no_binl([], R) -> cp_no_bin(R);\n"),
+    io:put_chars(Fd, "cp_no_binl(_, _) -> binary_found.\n\n"),
     ok.
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -476,11 +537,26 @@ gen_gc(Fd, GBP) ->
                  "-spec gc(String::unicode:chardata()) ->"
                  " maybe_improper_list() | {error, unicode:chardata()}.\n"),
     io:put_chars(Fd,
-                 "gc([CP1, CP2|_]=T)\n"
-                 "  when CP1 < 256, CP2 < 256, CP1 =/= $\r -> %% Ascii Fast path\n"
-                 "       T;\n"
+                 "gc([]=R) -> R;\n"
+                 "gc([CP]=R) when is_integer(CP) -> R;\n"
+                 "gc([$\\r=CP|R0]) ->\n"
+                 "    case cp(R0) of % Don't break CRLF\n"
+                 "        [$\\n|R1] -> [[$\\r,$\\n]|R1];\n"
+                 "        T -> [CP|T]\n"
+                 "    end;\n"
+                 "gc([CP1|T1]=T) when CP1 < 256 ->\n"
+                 "    case T1 of\n"
+                 "        [CP2|_] when CP2 < 256 -> T; %% Ascii Fast path\n"
+                 "        _ -> %% Keep the tail binary.\n"
+                 "            case cp_no_bin(T1) of\n"
+                 "                [CP2|_]=T3 when CP2 < 256 -> [CP1|T3]; %% Asciii Fast path\n"
+                 "                binary_found -> gc_1(T);\n"
+                 "                T4 -> gc_1([CP1|T4])\n"
+                 "            end\n"
+                 "    end;\n"
+                 "gc(<<>>) -> [];\n"
                  "gc(<<CP1/utf8, Rest/binary>>) ->\n"
-                 "    if CP1 < 256, CP1 =/= $\r ->\n"
+                 "    if CP1 < 256, CP1 =/= $\\r ->\n"
                  "           case Rest of\n"
                  "               <<CP2/utf8, _/binary>> when CP2 < 256 -> %% Ascii Fast path\n"
                  "                   [CP1|Rest];\n"
@@ -488,40 +564,52 @@ gen_gc(Fd, GBP) ->
                  "           end;\n"
                  "      true -> gc_1([CP1|Rest])\n"
                  "    end;\n"
+                 "gc([CP|_]=T) when is_integer(CP) -> gc_1(T);\n"
                  "gc(Str) ->\n"
-                 "    gc_1(cp(Str)).\n\n"
-                 "gc_1([$\\r|R0] = R) ->\n"
+                 "    case cp(Str) of\n"
+                 "        {error,_}=Error -> Error;\n"
+                 "        CPs -> gc(CPs)\n"
+                 "    end.\n"
+                ),
+
+    GenExtP = fun(Range) -> io:format(Fd, "gc_1~s gc_ext_pict(R1,[CP]);\n", [gen_clause(Range)]) end,
+    ExtendedPictographic0 = merge_ranges(maps:get(extended_pictographic,GBP)),
+    %% Pick codepoints below 256 (some data knowledge here)
+    {ExtendedPictographicLow,ExtendedPictographicHigh} =
+        lists:splitwith(fun({Start,undefined}) -> Start < 256 end,ExtendedPictographic0),
+    io:put_chars(Fd,
+                 "\ngc_1([$\\r|R0] = R) ->\n"
                  "    case cp(R0) of % Don't break CRLF\n"
                  "        [$\\n|R1] -> [[$\\r,$\\n]|R1];\n"
                  "        _ -> R\n"
-                 "    end;\n"
-                 %% "gc_1([CP1, CP2|_]=T) when CP1 < 256, CP2 < 256 ->\n"
-                 %% "    T;  %% Fast path\n"
-                 %% "gc_1([CP1|<<CP2/utf8, _/binary>>]=T) when CP1 < 256, CP2 < 256 ->\n"
-                 %% "    T;  %% Fast path\n"
-                ),
-
-    io:put_chars(Fd, "%% Handle control\n"),
+                 "    end;\n"),
+    io:put_chars(Fd, "\n%% Handle control\n"),
     GenControl = fun(Range) -> io:format(Fd, "gc_1~s R0;\n", [gen_clause(Range)]) end,
     CRs0 = merge_ranges(maps:get(cr, GBP) ++ maps:get(lf, GBP) ++ maps:get(control, GBP), false),
     [R1,R2,R3|Crs] = CRs0,
     [GenControl(CP) || CP <- merge_ranges([R1,R2,R3], split), CP =/= {$\r, undefined}],
     %%GenControl(R1),GenControl(R2),GenControl(R3),
-    io:format(Fd, "gc_1([CP|R]) when CP < 256 -> gc_extend(R,CP);\n", []),
+    io:put_chars(Fd, "\n%% Optimize Latin-1\n"),
+    [GenExtP(CP) || CP <- merge_ranges(ExtendedPictographicLow)],
+
+    io:format(Fd,
+              "gc_1([CP|R]=R0) when CP < 256 ->\n"
+              "    case R of\n"
+              "        [CP2|_] when CP2 < 256 -> R0;\n"
+              "        _ -> gc_extend(cp(R), R, CP)\n"
+              "    end;\n",
+              []),
+    io:put_chars(Fd, "\n%% Continue control\n"),
     [GenControl(CP) || CP <- Crs],
     %% One clause per CP
     %% CRs0 = merge_ranges(maps:get(cr, GBP) ++ maps:get(lf, GBP) ++ maps:get(control, GBP)),
     %% [GenControl(CP) || CP <- CRs0, CP =/= {$\r, undefined}],
 
-    io:put_chars(Fd, "%% Handle ZWJ\n"),
-    GenZWJ = fun(Range) -> io:format(Fd, "gc_1~s gc_zwj(R1, [CP]);\n", [gen_clause(Range)]) end,
-    [GenZWJ(CP) || CP <- merge_ranges(maps:get(zwj,GBP))],
-
-    io:put_chars(Fd, "%% Handle prepend\n"),
+    io:put_chars(Fd, "\n%% Handle prepend\n"),
     GenPrepend = fun(Range) -> io:format(Fd, "gc_1~s gc_prepend(R1, CP);\n", [gen_clause(Range)]) end,
     [GenPrepend(CP) || CP <- merge_ranges(maps:get(prepend,GBP))],
 
-    io:put_chars(Fd, "%% Handle Hangul L\n"),
+    io:put_chars(Fd, "\n%% Handle Hangul L\n"),
     GenHangulL = fun(Range) -> io:format(Fd, "gc_1~s gc_h_L(R1,[CP]);\n", [gen_clause(Range)]) end,
     [GenHangulL(CP) || CP <- merge_ranges(maps:get(l,GBP))],
     io:put_chars(Fd, "%% Handle Hangul V\n"),
@@ -533,19 +621,20 @@ gen_gc(Fd, GBP) ->
     io:put_chars(Fd, "%% Handle Hangul LV and LVT special, since they are large\n"),
     io:put_chars(Fd, "gc_1([CP|_]=R0) when 44000 < CP, CP < 56000 -> gc_h_lv_lvt(R0, []);\n"),
 
-    io:put_chars(Fd, "%% Handle Regional\n"),
-    GenRegional = fun(Range) -> io:format(Fd, "gc_1~s gc_regional(R1,[CP]);\n", [gen_clause(Range)]) end,
+    io:put_chars(Fd, "\n%% Handle Regional\n"),
+    GenRegional = fun(Range) -> io:format(Fd, "gc_1~s gc_regional(R1,CP);\n", [gen_clause(Range)]) end,
     [GenRegional(CP) || CP <- merge_ranges(maps:get(regional_indicator,GBP))],
-    io:put_chars(Fd, "%% Handle E_Base\n"),
-    GenEBase = fun(Range) -> io:format(Fd, "gc_1~s gc_e_cont(R1,[CP]);\n", [gen_clause(Range)]) end,
-    [GenEBase(CP) || CP <- merge_ranges(maps:get(e_base,GBP))],
-    io:put_chars(Fd, "%% Handle EBG\n"),
-    GenEBG = fun(Range) -> io:format(Fd, "gc_1~s gc_e_cont(R1,[CP]);\n", [gen_clause(Range)]) end,
-    [GenEBG(CP) || CP <- merge_ranges(maps:get(e_base_gaz,GBP))],
-
-    io:put_chars(Fd, "gc_1([CP|R]) -> gc_extend(R, CP);\n"),
-    io:put_chars(Fd, "gc_1([]) -> [];\n"),
-    io:put_chars(Fd, "gc_1({error,_}=Error) -> Error.\n\n"),
+    %% io:put_chars(Fd, "%% Handle E_Base\n"),
+    %% GenEBase = fun(Range) -> io:format(Fd, "gc_1~s gc_e_cont(R1,[CP]);\n", [gen_clause(Range)]) end,
+    %% [GenEBase(CP) || CP <- merge_ranges(maps:get(e_base,GBP))],
+    %% io:put_chars(Fd, "%% Handle EBG\n"),
+    %% GenEBG = fun(Range) -> io:format(Fd, "gc_1~s gc_e_cont(R1,[CP]);\n", [gen_clause(Range)]) end,
+    %% [GenEBG(CP) || CP <- merge_ranges(maps:get(e_base_gaz,GBP))],
+
+    io:put_chars(Fd, "%% Handle extended_pictographic\n"),
+    [GenExtP(CP) || CP <- merge_ranges(ExtendedPictographicHigh)],
+    io:put_chars(Fd, "\n%% default clauses\n"),
+    io:put_chars(Fd, "gc_1([CP|R]) -> gc_extend(cp(R), R, CP).\n\n"),
 
     io:put_chars(Fd, "%% Handle Prepend\n"),
     io:put_chars(Fd,
@@ -572,36 +661,24 @@ gen_gc(Fd, GBP) ->
                  "%% To simplify binary handling in libraries the tail should be kept binary\n"
                  "%% and not a lookahead CP\n"
                 ),
-    io:put_chars(Fd, "gc_extend(T, Acc) ->\n"
-                 "    gc_extend(cp(T), T, Acc).\n\n"),
     io:put_chars(Fd,
-                 "gc_extend([CP|T], T0, Acc0) ->\n"
+                 "gc_extend([CP|T], T0, CP0) ->\n"
                  "    case is_extend(CP) of\n"
-                 "        zwj ->\n"
-                 "            case Acc0 of\n"
-                 "                [_|_] -> gc_zwj(T, [CP|Acc0]);\n"
-                 "                Acc -> gc_zwj(T, [CP,Acc])\n"
-                 "            end;\n"
-                 "        true ->\n"
-                 "            case Acc0 of\n"
-                 "                [_|_] -> gc_extend(T, [CP|Acc0]);\n"
-                 "                Acc -> gc_extend(T, [CP,Acc])\n"
-                 "            end;\n"
-                 "        false ->\n"
-                 "            case Acc0 of\n"
-                 "                [Acc] -> [Acc|T0];\n"
-                 "                [_|_]=Acc -> [lists:reverse(Acc)|T0];\n"
-                 "                Acc -> [Acc|T0]\n"
-                 "            end\n"
+                 "        false -> [CP0|T0]; % losing work done on T\n"
+                 "        _TrueOrZWJ -> gc_extend2(cp(T), T, [CP,CP0])\n"
                  "    end;\n"
-                 "gc_extend([], _, Acc0) ->\n"
-                 "    case Acc0 of\n"
-                 "        [_]=Acc -> Acc;\n"
-                 "        [_|_]=Acc -> [lists:reverse(Acc)];\n"
-                 "        Acc -> [Acc]\n"
+                 "gc_extend([], _, CP) -> [CP];\n"
+                 "gc_extend({error,R}, _, CP) -> [CP|R].\n\n"),
+    io:put_chars(Fd,
+                 "gc_extend2([CP|T], T0, Acc) ->\n"
+                 "    case is_extend(CP) of\n"
+                 "        false -> [lists:reverse(Acc)|T0]; % losing work done on T\n"
+                 "        _TrueOrZWJ -> gc_extend2(cp(T), T, [CP|Acc])\n"
                  "    end;\n"
-                 "gc_extend({error,R}, T, Acc0) ->\n"
-                 "    gc_extend([], T, Acc0) ++ [R].\n\n"
+                 "gc_extend2([], _, Acc) ->\n"
+                 "    [lists:reverse(Acc)];\n"
+                 "gc_extend2({error,R}, _, Acc) ->\n"
+                 "    [lists:reverse(Acc)] ++ [R].\n\n"
                  ),
     [ZWJ] = maps:get(zwj, GBP),
     GenExtend = fun(R) when R =:= ZWJ -> io:format(Fd, "is_extend~s zwj;\n", [gen_single_clause(ZWJ)]);
@@ -612,57 +689,54 @@ gen_gc(Fd, GBP) ->
     io:put_chars(Fd, "is_extend(_) -> false.\n\n"),
 
     io:put_chars(Fd,
-                 "gc_e_cont(R0, Acc) ->\n"
-                 "    case cp(R0) of\n"
-                 "        [CP|R1] ->\n"
-                 "            case is_extend(CP) of\n"
-                 "                zwj -> gc_zwj(R1, [CP|Acc]);\n"
-                 "                true -> gc_e_cont(R1, [CP|Acc]);\n"
-                 "                false ->\n"
-                 "                    case is_emodifier(CP) of\n"
-                 "                        true -> [lists:reverse([CP|Acc])|R1];\n"
-                 "                        false ->\n"
-                 "                            case Acc of\n"
-                 "                                [A] -> [A|R0];\n"
-                 "                                _ -> [lists:reverse(Acc)|R0]\n"
-                 "                            end\n"
-                 "                    end\n"
-                 "              end;\n"
-                 "        [] ->\n"
+                 "gc_ext_pict(T, Acc) ->\n"
+                 "    gc_ext_pict(cp(T), T, Acc).\n\n"
+                 "gc_ext_pict([CP|R1], T0, Acc) ->\n"
+                 "    case is_extend(CP) of\n"
+                 "        zwj -> gc_ext_pict_zwj(cp(R1), R1, [CP|Acc]);\n"
+                 "        true -> gc_ext_pict(R1, [CP|Acc]);\n"
+                 "        false ->\n"
                  "            case Acc of\n"
-                 "                [A] -> [A];\n"
-                 "                _ -> [lists:reverse(Acc)]\n"
-                 "            end;\n"
-                 "        {error,R} ->\n"
+                 "                [A] -> [A|T0];\n"
+                 "                _ -> [lists:reverse(Acc)|T0]\n"
+                 "            end\n"
+                 "    end;\n"
+                 "gc_ext_pict([], _T0, Acc) ->\n"
+                 "    case Acc of\n"
+                 "        [A] -> [A];\n"
+                 "        _ -> [lists:reverse(Acc)]\n"
+                 "    end;\n"
+                 "gc_ext_pict({error,R}, T, Acc) ->\n"
+                 "    gc_ext_pict([], T, Acc) ++ [R].\n\n"),
+    io:put_chars(Fd,
+                 "gc_ext_pict_zwj([CP|R1], T0, Acc) ->\n"
+                 "    case is_ext_pict(CP) of\n"
+                 "        true -> gc_ext_pict(R1, [CP|Acc]);\n"
+                 "        false ->\n"
                  "            case Acc of\n"
-                 "                [A] -> [A|R];\n"
-                 "                _ -> [lists:reverse(Acc)|R]\n"
+                 "                [A] -> [A|T0];\n"
+                 "                _ -> [lists:reverse(Acc)|T0]\n"
                  "            end\n"
-                 "    end.\n\n"),
-
-    GenEMod = fun(Range) -> io:format(Fd, "is_emodifier~s true;\n", [gen_single_clause(Range)]) end,
-    EMods = merge_ranges(maps:get(e_modifier, GBP), split),
-    [GenEMod(CP) || CP <- EMods],
-    io:put_chars(Fd, "is_emodifier(_) -> false.\n\n"),
-
-    io:put_chars(Fd, "gc_zwj(R0, Acc) ->\n    case cp(R0) of\n"),
-    GenZWJGlue = fun(Range) -> io:format(Fd, "~8c~s gc_extend(cp(R1), R0, [CP|Acc]);\n",
-                                         [$\s,gen_case_clause(Range)]) end,
-    [GenZWJGlue(CP) || CP <- merge_ranges(maps:get(glue_after_zwj,GBP))],
-    GenZWJEBG = fun(Range) -> io:format(Fd, "~8c~s gc_e_cont(R1, [CP|Acc]);\n",
-                                        [$\s,gen_case_clause(Range)]) end,
-    [GenZWJEBG(CP) || CP <- merge_ranges(maps:get(e_base_gaz,GBP))],
-    io:put_chars(Fd,"        R1 -> gc_extend(R1, R0, Acc)\n"
-                 "    end.\n\n"),
+                 "    end;\n"
+                 "gc_ext_pict_zwj([], _, Acc) ->\n"
+                 "    case Acc of\n"
+                 "        [A] -> [A];\n"
+                 "        _ -> [lists:reverse(Acc)]\n"
+                 "    end;\n"
+                 "gc_ext_pict_zwj({error,R}, T, Acc) ->\n"
+                 "    gc_ext_pict_zwj([], T, Acc) ++ [R].\n\n"),
 
+    GenExtPict = fun(Range) -> io:format(Fd, "is_ext_pict~s true;\n", [gen_single_clause(Range)]) end,
+    [GenExtPict(CP) || CP <- ExtendedPictographic0],
+    io:put_chars(Fd, "is_ext_pict(_) -> false.\n\n"),
 
     %% --------------------
     io:put_chars(Fd, "%% Handle Regional\n"),
     [{RLess,RLarge}] = merge_ranges(maps:get(regional_indicator,GBP)),
-    io:put_chars(Fd,"gc_regional(R0, Acc) ->\n"
+    io:put_chars(Fd,"gc_regional(R0, CP0) ->\n"
                  "    case cp(R0) of\n"),
-    io:format(Fd,   "        [CP|R1] when ~w =< CP,CP =< ~w-> gc_extend(R1,[CP|Acc]);~n",[RLess, RLarge]),
-    io:put_chars(Fd,"        R1 -> gc_extend(R1, R0, Acc)\n"
+    io:format(Fd,   "        [CP|R1] when ~w =< CP,CP =< ~w-> gc_extend2(cp(R1),R1,[CP,CP0]);~n",[RLess, RLarge]),
+    io:put_chars(Fd,"        R1 -> gc_extend(R1, R0, CP0)\n"
                  "    end.\n\n"),
 
     %% Special hangul
@@ -684,16 +758,23 @@ gen_gc(Fd, GBP) ->
     GenHangulV_2 = fun(Range) -> io:format(Fd, "~8c~s gc_h_T(R1,[CP|Acc]);\n",
                                            [$\s,gen_case_clause(Range)]) end,
     [GenHangulV_2(CP) || CP <- merge_ranges(maps:get(t,GBP))],
-    io:put_chars(Fd, "        R1 -> gc_extend(R1, R0, Acc)\n    end.\n\n"),
-
+    io:put_chars(Fd,
+                 "        R1 ->\n"
+                 "            case Acc of\n"
+                 "                [CP] -> gc_extend(R1, R0, CP);\n"
+                 "                _ -> gc_extend2(R1, R0, Acc)\n"
+                 "            end\n    end.\n\n"),
     io:put_chars(Fd, "%% Handle Hangul T\n"),
     io:put_chars(Fd, "gc_h_T(R0, Acc) ->\n    case cp(R0) of\n"),
     GenHangulT_1 = fun(Range) -> io:format(Fd, "~8c~s gc_h_T(R1,[CP|Acc]);\n",
                                            [$\s,gen_case_clause(Range)]) end,
     [GenHangulT_1(CP) || CP <- merge_ranges(maps:get(t,GBP))],
-    io:put_chars(Fd, "        R1 -> gc_extend(R1, R0, Acc)\n    end.\n\n"),
-
-    io:put_chars(Fd, "gc_h_lv_lvt({error,_}=Error, Acc) -> gc_extend(Error, [], Acc);\n"),
+    io:put_chars(Fd,
+                 "        R1 ->\n"
+                 "            case Acc of\n"
+                 "                [CP] -> gc_extend(R1, R0, CP);\n"
+                 "                _ -> gc_extend2(R1, R0, Acc)\n"
+                 "            end\n    end.\n\n"),
     io:put_chars(Fd, "%% Handle Hangul LV\n"),
     GenHangulLV = fun(Range) -> io:format(Fd, "gc_h_lv_lvt~s gc_h_V(R1,[CP|Acc]);\n",
                                           [gen_clause2(Range)]) end,
@@ -702,8 +783,10 @@ gen_gc(Fd, GBP) ->
     GenHangulLVT = fun(Range) -> io:format(Fd, "gc_h_lv_lvt~s gc_h_T(R1,[CP|Acc]);\n",
                                            [gen_clause2(Range)]) end,
     [GenHangulLVT(CP) || CP <- merge_ranges(maps:get(lvt,GBP))],
-    io:put_chars(Fd, "gc_h_lv_lvt([CP|R], []) -> gc_extend(R, CP);\n"), %% From gc_1/1
-    io:put_chars(Fd, "gc_h_lv_lvt(R, Acc) -> gc_extend(R, Acc).\n\n"),
+    io:put_chars(Fd, "gc_h_lv_lvt([CP|R], []) -> gc_extend(cp(R), R, CP);\n"), %% From gc_1/1
+    io:put_chars(Fd, "%% Also handles error tuples\n"),
+    io:put_chars(Fd, "gc_h_lv_lvt(R, [CP]) -> gc_extend(R, R, CP);\n"),
+    io:put_chars(Fd, "gc_h_lv_lvt(R, Acc) -> gc_extend2(R, R, Acc).\n\n"),
     ok.
 
 gen_compose_pairs(Fd, ExclData, Data) ->
diff --git a/lib/stdlib/vsn.mk b/lib/stdlib/vsn.mk
index e0217418fe..6471dc70e0 100644
--- a/lib/stdlib/vsn.mk
+++ b/lib/stdlib/vsn.mk
@@ -1 +1 @@
-STDLIB_VSN = 3.7
+STDLIB_VSN = 3.8.1
diff --git a/lib/syntax_tools/doc/src/notes.xml b/lib/syntax_tools/doc/src/notes.xml
index dc13fe474b..772f5e6e04 100644
--- a/lib/syntax_tools/doc/src/notes.xml
+++ b/lib/syntax_tools/doc/src/notes.xml
@@ -32,6 +32,20 @@
   <p>This document describes the changes made to the Syntax_Tools
     application.</p>
 
+<section><title>Syntax_Tools 2.1.7</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p> Fix pretty-printing of type funs. </p>
+          <p>
+	    Own Id: OTP-15519 Aux Id: ERL-815 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Syntax_Tools 2.1.6</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
diff --git a/lib/syntax_tools/src/erl_prettypr.erl b/lib/syntax_tools/src/erl_prettypr.erl
index 6906ef1553..6ad9bec2e6 100644
--- a/lib/syntax_tools/src/erl_prettypr.erl
+++ b/lib/syntax_tools/src/erl_prettypr.erl
@@ -1101,8 +1101,9 @@ lay_2(Node, Ctxt) ->
             Ctxt1 = reset_prec(Ctxt),
             D1 = lay(erl_syntax:constrained_function_type_body(Node),
                      Ctxt1),
+            Ctxt2 = Ctxt1#ctxt{clause = undefined},
             D2 = lay(erl_syntax:constrained_function_type_argument(Node),
-                     Ctxt1),
+                     Ctxt2),
             beside(D1,
                    beside(floating(text(" when ")), D2));
 
@@ -1113,7 +1114,7 @@ lay_2(Node, Ctxt) ->
                                   _ ->
                                       {"fun(", ")"}
                               end,
-            Ctxt1 = reset_prec(Ctxt),
+            Ctxt1 = (reset_prec(Ctxt))#ctxt{clause = undefined},
             D1 = case erl_syntax:function_type_arguments(Node) of
                      any_arity ->
                          text("(...)");
diff --git a/lib/syntax_tools/src/igor.erl b/lib/syntax_tools/src/igor.erl
index 16e3511734..b712b77e9f 100644
--- a/lib/syntax_tools/src/igor.erl
+++ b/lib/syntax_tools/src/igor.erl
@@ -660,7 +660,7 @@ merge_files1(Files, Opts) ->
 %% transitions), code replacement is expected to be detected. Then, if
 %% we in the merged code do not check at these points if the
 %% <em>target</em> module (the result of the merge) has been replaced,
-%% we can not be sure in general that we will be able to do code
+%% we cannot be sure in general that we will be able to do code
 %% replacement of the merged state machine - it could run forever
 %% without detecting the code change. Therefore, all such calls must
 %% remain remote-calls (detecting code changes), but may call the target
diff --git a/lib/syntax_tools/test/syntax_tools_SUITE.erl b/lib/syntax_tools/test/syntax_tools_SUITE.erl
index 9dbd0e302a..e1dd1bd73b 100644
--- a/lib/syntax_tools/test/syntax_tools_SUITE.erl
+++ b/lib/syntax_tools/test/syntax_tools_SUITE.erl
@@ -26,14 +26,14 @@
 -export([app_test/1,appup_test/1,smoke_test/1,revert/1,revert_map/1,
          revert_map_type/1,
 	t_abstract_type/1,t_erl_parse_type/1,t_type/1, t_epp_dodger/1,
-	t_comment_scan/1,t_igor/1,t_erl_tidy/1]).
+	t_comment_scan/1,t_igor/1,t_erl_tidy/1,t_prettypr/1]).
 
 suite() -> [{ct_hooks,[ts_install_cth]}].
 
 all() -> 
     [app_test,appup_test,smoke_test,revert,revert_map,revert_map_type,
     t_abstract_type,t_erl_parse_type,t_type,t_epp_dodger,
-    t_comment_scan,t_igor,t_erl_tidy].
+    t_comment_scan,t_igor,t_erl_tidy,t_prettypr].
 
 groups() -> 
     [].
@@ -74,7 +74,7 @@ smoke_test_file(File) ->
 	    [print_error_markers(F, File) || F <- Forms],
 	    ok;
 	{error,Reason} ->
-	    io:format("~s: ~p\n", [File,Reason]),
+	    io:format("~ts: ~p\n", [File,Reason]),
 	    error
     end.
 
@@ -82,7 +82,7 @@ print_error_markers(F, File) ->
     case erl_syntax:type(F) of
 	error_marker ->
 	    {L,M,Info} = erl_syntax:error_marker_info(F),
-	    io:format("~ts:~p: ~s", [File,L,M:format_error(Info)]);
+	    io:format("~ts:~p: ~ts", [File,L,M:format_error(Info)]);
 	_ ->
 	    ok
     end.
@@ -300,6 +300,14 @@ t_comment_scan(Config) when is_list(Config) ->
     ok = test_comment_scan(Filenames,DataDir),
     ok.
 
+t_prettypr(Config) when is_list(Config) ->
+    DataDir   = ?config(data_dir, Config),
+    PrivDir   = ?config(priv_dir, Config),
+    Filenames = ["type_specs.erl",
+                 "specs_and_funs.erl"],
+    ok = test_prettypr(Filenames,DataDir,PrivDir),
+    ok.
+
 test_files(Config) ->
     DataDir = ?config(data_dir, Config),
     [ filename:join(DataDir,Filename) || Filename <- test_files() ].
@@ -307,7 +315,8 @@ test_files(Config) ->
 test_files() ->
     ["syntax_tools_SUITE_test_module.erl",
      "syntax_tools_test.erl",
-     "type_specs.erl"].
+     "type_specs.erl",
+     "specs_and_funs.erl"].
 
 t_igor(Config) when is_list(Config) ->
     DataDir   = ?config(data_dir, Config),
@@ -353,12 +362,33 @@ test_comment_scan([File|Files],DataDir) ->
 	  end,
     Fs1 = erl_recomment:recomment_forms(Fs0, Comments),
     Fs2 = erl_syntax_lib:map(Fun, Fs1),
-    io:format("File: ~s~n", [Filename]),
+    io:format("File: ~ts~n", [Filename]),
     io:put_chars(erl_prettypr:format(Fs2, [{paper,  120},
 					   {ribbon, 110}])),
     test_comment_scan(Files,DataDir).
 
 
+test_prettypr([],_,_) -> ok;
+test_prettypr([File|Files],DataDir,PrivDir) ->
+    Filename  = filename:join(DataDir,File),
+    io:format("Parsing ~p~n", [Filename]),
+    {ok, Fs0} = epp:parse_file(Filename, [], []),
+    Fs = erl_syntax:form_list(Fs0),
+    PP = erl_prettypr:format(Fs, [{paper,  120}, {ribbon, 110}]),
+    io:put_chars(PP),
+    OutFile = filename:join(PrivDir, File),
+    ok = file:write_file(OutFile,unicode:characters_to_binary(PP)),
+    io:format("Parsing OutFile: ~ts~n", [OutFile]),
+    {ok, Fs2} = epp:parse_file(OutFile, [], []),
+    case [Error || {error, _} = Error <- Fs2] of
+        [] ->
+            ok;
+        Errors ->
+            ?t:fail(Errors)
+    end,
+    test_prettypr(Files,DataDir,PrivDir).
+
+
 test_epp_dodger([], _, _) -> ok;
 test_epp_dodger([Filename|Files],DataDir,PrivDir) ->
     io:format("Parsing ~p~n", [Filename]),
@@ -415,7 +445,7 @@ pretty_print_parse_forms([{Fs0,Type}|FsForms],PrivDir,Filename) ->
     {Fs2,{CC,CT}} = erl_syntax_lib:mapfold(Comment,{0,0}, Fs1),
     io:format("Commented on ~w cases and ~w tries~n", [CC,CT]),
     PP  = erl_prettypr:format(Fs2),
-    ok  = file:write_file(OutFile,iolist_to_binary(PP)),
+    ok  = file:write_file(OutFile,unicode:characters_to_binary(PP)),
     pretty_print_parse_forms(FsForms,PrivDir,Filename).
 
 
diff --git a/lib/syntax_tools/test/syntax_tools_SUITE_data/specs_and_funs.erl b/lib/syntax_tools/test/syntax_tools_SUITE_data/specs_and_funs.erl
new file mode 100644
index 0000000000..8dfeaf5a6b
--- /dev/null
+++ b/lib/syntax_tools/test/syntax_tools_SUITE_data/specs_and_funs.erl
@@ -0,0 +1,18 @@
+-module(specs_and_funs).
+
+-export([my_apply/3, two/1]).
+
+%% OTP-15519, ERL-815
+
+-spec my_apply(Fun, Arg, fun((A) -> A)) -> Result when
+      Fun :: fun((Arg) -> Result),
+      Arg :: any(),
+      Result :: any().
+
+my_apply(Fun, Arg, _) ->
+    Fun(Arg).
+
+-spec two(fun((A) -> A)) -> fun((B) -> B).
+
+two(F) ->
+    F(fun(X) -> X end).
diff --git a/lib/syntax_tools/vsn.mk b/lib/syntax_tools/vsn.mk
index 8959ebbd04..538c71dc24 100644
--- a/lib/syntax_tools/vsn.mk
+++ b/lib/syntax_tools/vsn.mk
@@ -1 +1 @@
-SYNTAX_TOOLS_VSN = 2.1.6
+SYNTAX_TOOLS_VSN = 2.1.7
diff --git a/lib/tftp/doc/src/tftp.xml b/lib/tftp/doc/src/tftp.xml
index 4ed54bc462..57d64b7379 100644
--- a/lib/tftp/doc/src/tftp.xml
+++ b/lib/tftp/doc/src/tftp.xml
@@ -28,7 +28,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>tftp</module>
+  <module since="">tftp</module>
   <modulesummary>Trivial FTP.</modulesummary>
   <description>
     <p>Interface module for the <c>tftp</c> application.</p>
@@ -172,7 +172,7 @@
 
   <funcs>
     <func>
-      <name>change_config(daemons, Options) -> [{Pid, Result}]</name>
+      <name since="">change_config(daemons, Options) -> [{Pid, Result}]</name>
       <fsummary>Changes configuration for all daemons.
       </fsummary>
       <type>
@@ -187,7 +187,7 @@
     </func>
 
     <func>
-      <name>change_config(servers, Options) -> [{Pid, Result}]</name>
+      <name since="">change_config(servers, Options) -> [{Pid, Result}]</name>
       <fsummary>Changes configuration for all servers.
       </fsummary>
       <type>
@@ -202,7 +202,7 @@
     </func>
 
     <func>
-      <name>change_config(Pid, Options) -> Result</name>
+      <name since="">change_config(Pid, Options) -> Result</name>
       <fsummary>Changes configuration for a TFTP daemon, server, 
       or client process.</fsummary>
       <type>
@@ -217,7 +217,7 @@
     </func>
     
     <func>
-      <name>info(daemons) -> [{Pid, Options}]</name>
+      <name since="">info(daemons) -> [{Pid, Options}]</name>
       <fsummary>Returns information about all daemons.</fsummary>
       <type>
         <v>Pid = [pid()]</v>
@@ -230,7 +230,7 @@
     </func>
 
     <func>
-      <name>info(servers) -> [{Pid, Options}]</name>
+      <name since="">info(servers) -> [{Pid, Options}]</name>
       <fsummary>Returns information about all servers.</fsummary>
       <type>
         <v>Pid = [pid()]</v>
@@ -243,7 +243,7 @@
     </func>
 
     <func>
-      <name>info(Pid) -> {ok, Options} | {error, Reason}</name>
+      <name since="">info(Pid) -> {ok, Options} | {error, Reason}</name>
       <fsummary>Returns information about a daemon, server, or client process.</fsummary>
       <type>
         <v>Options = [option()]</v>
@@ -255,7 +255,7 @@
     </func>
        
     <func>
-      <name>read_file(RemoteFilename, LocalFilename, Options) -> {ok, LastCallbackState} | {error, Reason}</name>
+      <name since="">read_file(RemoteFilename, LocalFilename, Options) -> {ok, LastCallbackState} | {error, Reason}</name>
       <fsummary>Reads a (virtual) file from a TFTP server.</fsummary>
       <type>
         <v>RemoteFilename = string()</v>
@@ -285,7 +285,7 @@
     </func>
     
     <func>
-       <name>start(Options) -> {ok, Pid} | {error, Reason}</name>
+       <name since="">start(Options) -> {ok, Pid} | {error, Reason}</name>
       <fsummary>Starts a daemon process.</fsummary>
       <type>
         <v>Options = [option()]</v>
@@ -301,7 +301,7 @@
     </func>
 
     <func>
-      <name>write_file(RemoteFilename, LocalFilename, Options) -> {ok, LastCallbackState} | {error, Reason}</name>
+      <name since="">write_file(RemoteFilename, LocalFilename, Options) -> {ok, LastCallbackState} | {error, Reason}</name>
       <fsummary>Writes a (virtual) file to a TFTP server.</fsummary>
       <type>
         <v>RemoteFilename = string()</v>
@@ -389,7 +389,7 @@
 
   <funcs>
      <func>
-      <name>Module:abort(Code, Text, State) -> ok</name>
+      <name since="OTP 18.1">Module:abort(Code, Text, State) -> ok</name>
       <fsummary>Aborts the file transfer.</fsummary>
       <type>
         <v>Code = undef | enoent | eacces | enospc</v>
@@ -413,7 +413,7 @@
     </func>
     
       <func>
-      <name>Module:open(Peer, Access, Filename, Mode, SuggestedOptions, State) -> {ok, AcceptedOptions, NewState} | {error, {Code, Text}}</name>
+      <name since="OTP 18.1">Module:open(Peer, Access, Filename, Mode, SuggestedOptions, State) -> {ok, AcceptedOptions, NewState} | {error, {Code, Text}}</name>
       <fsummary>Opens a file for read or write access.</fsummary>
       <type>
         <v>Peer = {PeerType, PeerHost, PeerPort}</v>
@@ -448,7 +448,7 @@
     </func>
     
     <func>
-      <name>Module:prepare(Peer, Access, Filename, Mode, SuggestedOptions, InitialState) -> {ok, AcceptedOptions, NewState} | {error, {Code, Text}}</name>
+      <name since="OTP 18.1">Module:prepare(Peer, Access, Filename, Mode, SuggestedOptions, InitialState) -> {ok, AcceptedOptions, NewState} | {error, {Code, Text}}</name>
       <fsummary>Prepares to open a file on the client side.</fsummary>
       <type>
         <v>Peer = {PeerType, PeerHost, PeerPort}</v>
@@ -483,7 +483,7 @@
     </func>
 
     <func>
-      <name>Module:read(State) -> {more, Bin, NewState} | {last, Bin, FileSize} | {error, {Code, Text}}</name>
+      <name since="OTP 18.1">Module:read(State) -> {more, Bin, NewState} | {last, Bin, FileSize} | {error, {Code, Text}}</name>
       <fsummary>Reads a chunk from the file.</fsummary>
       <type>
         <v>State = NewState = term()</v>
@@ -510,7 +510,7 @@
     </func>
 
     <func>
-      <name>Module:write(Bin, State) -> {more, NewState} | {last, FileSize} | {error, {Code, Text}}</name>
+      <name since="OTP 18.1">Module:write(Bin, State) -> {more, NewState} | {last, FileSize} | {error, {Code, Text}}</name>
       <fsummary>Writes a chunk to the file.</fsummary>
       <type>
         <v>Bin = binary()</v>
@@ -549,7 +549,7 @@
 
   <funcs>
     <func>
-      <name>Logger:error_msg(Format, Data) -> ok | exit(Reason)</name>
+      <name since="OTP 18.1">Logger:error_msg(Format, Data) -> ok | exit(Reason)</name>
       <fsummary>Logs an error message.</fsummary>
       <type>
         <v>Format = string()</v>
@@ -565,7 +565,7 @@
     </func>
 
     <func>
-      <name>Logger:info_msg(Format, Data) -> ok | exit(Reason)</name>
+      <name since="OTP 18.1">Logger:info_msg(Format, Data) -> ok | exit(Reason)</name>
       <fsummary>Logs an info message.</fsummary>
       <type>
         <v>Format = string()</v>
@@ -579,7 +579,7 @@
     </func>
     
     <func>
-      <name>Logger:warning_msg(Format, Data) -> ok | exit(Reason)</name>
+      <name since="OTP 18.1">Logger:warning_msg(Format, Data) -> ok | exit(Reason)</name>
       <fsummary>Logs a warning message.</fsummary>
       <type>
         <v>Format = string()</v>
diff --git a/lib/tools/c_src/Makefile.in b/lib/tools/c_src/Makefile.in
index cfe91917f8..289322b6fa 100644
--- a/lib/tools/c_src/Makefile.in
+++ b/lib/tools/c_src/Makefile.in
@@ -29,7 +29,6 @@ CC=@CC@
 LD=@LD@
 AR=@AR@
 RANLIB=@RANLIB@
-RM=@RM@
 MKDIR=@MKDIR@
 INSTALL=@INSTALL@
 INSTALL_DIR=@INSTALL_DIR@
@@ -158,9 +157,9 @@ $(ERTS_LIB):
 docs:
 
 clean:
-	$(RM) -rf ../obj/*
-	$(RM) -rf ../bin/*
-	$(RM) -f ./*~
+	$(RM) -r ../obj/*
+	$(RM) -r ../bin/*
+	$(RM) ./*~
 
 .PHONY: all erts_lib docs clean
 
diff --git a/lib/tools/doc/src/cover.xml b/lib/tools/doc/src/cover.xml
index 15cd784253..e9f782977d 100644
--- a/lib/tools/doc/src/cover.xml
+++ b/lib/tools/doc/src/cover.xml
@@ -30,7 +30,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>cover</module>
+  <module since="">cover</module>
   <modulesummary>A Coverage Analysis Tool for Erlang</modulesummary>
   <description>
     <p>The module <c>cover</c> provides a set of functions for coverage
@@ -115,7 +115,7 @@
   </description>
   <funcs>
     <func>
-      <name>start() -> {ok,Pid} | {error,Reason}</name>
+      <name since="">start() -> {ok,Pid} | {error,Reason}</name>
       <fsummary>Start Cover.</fsummary>
       <type>
         <v>Pid = pid()</v>
@@ -128,21 +128,33 @@
       </desc>
     </func>
     <func>
-      <name>start(Nodes) -> {ok,StartedNodes} | {error,not_main_node}</name>
+      <name since="OTP 22.0">local_only() -> ok | {error,too_late}</name>
+      <fsummary>Only support running Cover on the local node.</fsummary>
+      <desc>
+        <p>Only support running Cover on the local node. This function
+	must be called before any modules have been compiled or any
+	nodes added. When running in this mode, modules will be Cover
+	compiled in a more efficient way, but the resulting code will
+	only work on the same node they were compiled on.</p>
+      </desc>
+    </func>
+    <func>
+      <name since="">start(Nodes) -> {ok,StartedNodes} | {error,not_main_node} | {error,local_only}</name>
       <fsummary>Start Cover on remote nodes.</fsummary>
       <type>
         <v>Nodes = StartedNodes = [atom()]</v>
       </type>
       <desc>
         <p>Starts a Cover server on the each of given nodes, and loads
-          all cover compiled modules.</p>
+          all cover compiled modules. This call will fail if
+	<c>cover:local_only/0</c> has been called.</p>
       </desc>
     </func>
     <func>
-      <name>compile(ModFiles) -> Result | [Result]</name>
-      <name>compile(ModFiles, Options) -> Result | [Result]</name>
-      <name>compile_module(ModFiles) -> Result | [Result]</name>
-      <name>compile_module(ModFiles, Options) -> Result | [Result]</name>
+      <name since="">compile(ModFiles) -> Result | [Result]</name>
+      <name since="">compile(ModFiles, Options) -> Result | [Result]</name>
+      <name since="">compile_module(ModFiles) -> Result | [Result]</name>
+      <name since="">compile_module(ModFiles, Options) -> Result | [Result]</name>
       <fsummary>Compile one or more modules for Cover analysis.</fsummary>
       <type>
 	<v>ModFiles = ModFile | [ModFile]</v>
@@ -176,9 +188,9 @@
       </desc>
     </func>
     <func>
-      <name>compile_directory() -> [Result] | {error,Reason}</name>
-      <name>compile_directory(Dir) -> [Result] | {error,Reason}</name>
-      <name>compile_directory(Dir, Options) -> [Result] | {error,Reason}</name>
+      <name since="">compile_directory() -> [Result] | {error,Reason}</name>
+      <name since="">compile_directory(Dir) -> [Result] | {error,Reason}</name>
+      <name since="">compile_directory(Dir, Options) -> [Result] | {error,Reason}</name>
       <fsummary>Compile all modules in a directory for Cover analysis.</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -199,7 +211,7 @@
       </desc>
     </func>
     <func>
-      <name>compile_beam(ModFiles) -> Result | [Result]</name>
+      <name since="">compile_beam(ModFiles) -> Result | [Result]</name>
       <fsummary>Compile one or more modules for Cover analysis, using existing beam(s).</fsummary>
       <type>
 	<v>ModFiles = ModFile | [ModFile]</v>
@@ -234,15 +246,15 @@
           <c>{already_cover_compiled,no_beam_found,Module}</c> is
           returned.</p>
         <p><c>{error,BeamFile}</c> is returned if the compiled code
-          can not be loaded on the node.</p>
+          cannot be loaded on the node.</p>
 	<p>If a list of <c>ModFiles</c> is given as input, a list
 	  of <c>Result</c> will be returned. The order of the returned
 	  list is undefined.</p>
       </desc>
     </func>
     <func>
-      <name>compile_beam_directory() -> [Result] | {error,Reason}</name>
-      <name>compile_beam_directory(Dir) -> [Result] | {error,Reason}</name>
+      <name since="">compile_beam_directory() -> [Result] | {error,Reason}</name>
+      <name since="">compile_beam_directory(Dir) -> [Result] | {error,Reason}</name>
       <fsummary>Compile all .beam files in a directory for Cover analysis.</fsummary>
       <type>
         <v>Dir = string()</v>
@@ -260,14 +272,14 @@
       </desc>
     </func>
     <func>
-      <name>analyse() -> {result,Ok,Fail} | {error,not_main_node}</name>
-      <name>analyse(Modules) -> OneResult | {result,Ok,Fail} | {error,not_main_node}</name>
-      <name>analyse(Analysis) -> {result,Ok,Fail} | {error,not_main_node}</name>
-      <name>analyse(Level) -> {result,Ok,Fail} | {error,not_main_node}</name>
-      <name>analyse(Modules, Analysis) -> OneResult | {result,Ok,Fail} | {error,not_main_node}</name>
-      <name>analyse(Modules, Level) -> OneResult | {result,Ok,Fail} | {error,not_main_node}</name>
-      <name>analyse(Analysis, Level) -> {result,Ok,Fail} | {error,not_main_node}</name>
-      <name>analyse(Modules, Analysis, Level) -> OneResult | {result,Ok,Fail} | {error,not_main_node}</name>
+      <name since="OTP 18.0">analyse() -> {result,Ok,Fail} | {error,not_main_node}</name>
+      <name since="">analyse(Modules) -> OneResult | {result,Ok,Fail} | {error,not_main_node}</name>
+      <name since="">analyse(Analysis) -> {result,Ok,Fail} | {error,not_main_node}</name>
+      <name since="">analyse(Level) -> {result,Ok,Fail} | {error,not_main_node}</name>
+      <name since="">analyse(Modules, Analysis) -> OneResult | {result,Ok,Fail} | {error,not_main_node}</name>
+      <name since="">analyse(Modules, Level) -> OneResult | {result,Ok,Fail} | {error,not_main_node}</name>
+      <name since="">analyse(Analysis, Level) -> {result,Ok,Fail} | {error,not_main_node}</name>
+      <name since="">analyse(Modules, Analysis, Level) -> OneResult | {result,Ok,Fail} | {error,not_main_node}</name>
       <fsummary>Analyse one or more Cover compiled modules.</fsummary>
       <type>
 	<v>Modules = Module | [Module]</v>
@@ -305,10 +317,10 @@
       </desc>
     </func>
     <func>
-      <name>analyse_to_file() -> {result,Ok,Fail} | {error,not_main_node}</name>
-      <name>analyse_to_file(Modules) ->  Answer | {result,Ok,Fail} | {error,not_main_node}</name>
-      <name>analyse_to_file(Options) -> {result,Ok,Fail} | {error,not_main_node}</name>
-      <name>analyse_to_file(Modules,Options) -> Answer | {result,Ok,Fail} | {error,not_main_node}</name>
+      <name since="OTP 18.0">analyse_to_file() -> {result,Ok,Fail} | {error,not_main_node}</name>
+      <name since="">analyse_to_file(Modules) ->  Answer | {result,Ok,Fail} | {error,not_main_node}</name>
+      <name since="">analyse_to_file(Options) -> {result,Ok,Fail} | {error,not_main_node}</name>
+      <name since="">analyse_to_file(Modules,Options) -> Answer | {result,Ok,Fail} | {error,not_main_node}</name>
       <fsummary>Detailed coverage analysis of one or more Cover compiled modules.</fsummary>
       <type>
         <v>Modules = Module | [Module]</v>
@@ -359,10 +371,10 @@
       </desc>
     </func>
     <func>
-      <name>async_analyse_to_file(Module) -> </name>
-      <name>async_analyse_to_file(Module,Options) -> </name>
-      <name>async_analyse_to_file(Module, OutFile) -> </name>
-      <name>async_analyse_to_file(Module, OutFile, Options) ->  pid()</name>
+      <name since="OTP R14B02">async_analyse_to_file(Module) -> </name>
+      <name since="OTP R14B02">async_analyse_to_file(Module,Options) -> </name>
+      <name since="OTP R14B02">async_analyse_to_file(Module, OutFile) -> </name>
+      <name since="OTP R14B02">async_analyse_to_file(Module, OutFile, Options) ->  pid()</name>
       <fsummary>Asynchronous call to analyse_to_file.</fsummary>
       <type>
         <v>Module = atom()</v>
@@ -384,7 +396,7 @@
       </desc>
     </func>
     <func>
-      <name>modules() -> [Module] | {error,not_main_node}</name>
+      <name since="">modules() -> [Module] | {error,not_main_node}</name>
       <fsummary>Return all Cover compiled modules.</fsummary>
       <type>
         <v>Module = atom()</v>
@@ -395,7 +407,7 @@
       </desc>
     </func>
     <func>
-      <name>imported_modules() -> [Module] | {error,not_main_node}</name>
+      <name since="">imported_modules() -> [Module] | {error,not_main_node}</name>
       <fsummary>Return all modules for which there are imported data.</fsummary>
       <type>
         <v>Module = atom()</v>
@@ -406,7 +418,7 @@
       </desc>
     </func>
     <func>
-      <name>imported() -> [File] | {error,not_main_node}</name>
+      <name since="">imported() -> [File] | {error,not_main_node}</name>
       <fsummary>Return all imported files.</fsummary>
       <type>
         <v>File = string()</v>
@@ -416,7 +428,7 @@
       </desc>
     </func>
     <func>
-      <name>which_nodes() -> [Node] | {error,not_main_node}</name>
+      <name since="">which_nodes() -> [Node] | {error,not_main_node}</name>
       <fsummary>Return all nodes that are part of the coverage analysis.</fsummary>
       <type>
         <v>Node = atom()</v>
@@ -428,7 +440,7 @@
       </desc>
     </func>
     <func>
-      <name>is_compiled(Module) -> {file,File} | false |  {error,not_main_node}</name>
+      <name since="">is_compiled(Module) -> {file,File} | false |  {error,not_main_node}</name>
       <fsummary>Check if a module is Cover compiled.</fsummary>
       <type>
         <v>Module = atom()</v>
@@ -442,8 +454,8 @@
       </desc>
     </func>
     <func>
-      <name>reset(Module) -></name>
-      <name>reset() ->  ok | {error,not_main_node}</name>
+      <name since="">reset(Module) -></name>
+      <name since="">reset() ->  ok | {error,not_main_node}</name>
       <fsummary>Reset coverage data for Cover compiled modules.</fsummary>
       <type>
         <v>Module = atom()</v>
@@ -458,8 +470,8 @@
       </desc>
     </func>
     <func>
-      <name>export(ExportFile)</name>
-      <name>export(ExportFile,Module) -> ok | {error,Reason}</name>
+      <name since="">export(ExportFile)</name>
+      <name since="">export(ExportFile,Module) -> ok | {error,Reason}</name>
       <fsummary>Reset coverage data for Cover compiled modules.</fsummary>
       <type>
         <v>ExportFile = string()</v>
@@ -470,7 +482,7 @@
         <p>Exports the current coverage data for <c>Module</c> to the
           file <c>ExportFile</c>. It is recommended to name the
           <c>ExportFile</c> with the extension <c>.coverdata</c>, since
-          other filenames can not be read by the web based interface to
+          other filenames cannot be read by the web based interface to
           cover.</p>
         <p>If <c>Module</c> is not given, data for all Cover compiled
           or earlier imported modules is exported.</p>
@@ -480,7 +492,7 @@
       </desc>
     </func>
     <func>
-      <name>import(ExportFile) -> ok | {error,Reason}</name>
+      <name since="">import(ExportFile) -> ok | {error,Reason}</name>
       <fsummary>Reset coverage data for Cover compiled modules.</fsummary>
       <type>
         <v>ExportFile = string()</v>
@@ -496,7 +508,7 @@
         <p>Coverage data from several export files can be imported
           into one system. The coverage data is then added up when
           analysing.</p>
-        <p>Coverage data for a module can not be imported from the
+        <p>Coverage data for a module cannot be imported from the
           same file twice unless the module is first reset or
           compiled. The check is based on the filename, so you can
           easily fool the system by renaming your export file.</p>
@@ -504,14 +516,14 @@
       </desc>
     </func>
     <func>
-      <name>stop() -> ok | {error,not_main_node}</name>
+      <name since="">stop() -> ok | {error,not_main_node}</name>
       <fsummary>Stop Cover.</fsummary>
       <desc>
         <p>Stops the Cover server and unloads all Cover compiled code.</p>
       </desc>
     </func>
     <func>
-      <name>stop(Nodes) -> ok | {error,not_main_node}</name>
+      <name since="">stop(Nodes) -> ok | {error,not_main_node}</name>
       <fsummary>Stop Cover on remote nodes.</fsummary>
       <type>
         <v>Nodes = [atom()]</v>
@@ -523,7 +535,7 @@
       </desc>
     </func>
     <func>
-      <name>flush(Nodes) -> ok | {error,not_main_node}</name>
+      <name since="OTP R16B">flush(Nodes) -> ok | {error,not_main_node}</name>
       <fsummary>Collect cover data from remote nodes.</fsummary>
       <type>
         <v>Nodes = [atom()]</v>
diff --git a/lib/tools/doc/src/cprof.xml b/lib/tools/doc/src/cprof.xml
index df0acbe617..b6af8b6d28 100644
--- a/lib/tools/doc/src/cprof.xml
+++ b/lib/tools/doc/src/cprof.xml
@@ -34,7 +34,7 @@
     <rev>PA1</rev>
     <file>cprof.sgml</file>
   </header>
-  <module>cprof</module>
+  <module since="">cprof</module>
   <modulesummary>A simple Call Count Profiling Tool using breakpoints for minimal runtime performance impact.</modulesummary>
   <description>
     <p>The <c>cprof</c> module is used to profile a program
@@ -65,10 +65,10 @@
   </description>
   <funcs>
     <func>
-      <name>analyse() -> {AllCallCount, ModAnalysisList}</name>
-      <name>analyse(Limit) -> {AllCallCount, ModAnalysisList}</name>
-      <name>analyse(Mod) -> ModAnalysis</name>
-      <name>analyse(Mod, Limit) -> ModAnalysis</name>
+      <name since="">analyse() -> {AllCallCount, ModAnalysisList}</name>
+      <name since="">analyse(Limit) -> {AllCallCount, ModAnalysisList}</name>
+      <name since="">analyse(Mod) -> ModAnalysis</name>
+      <name since="">analyse(Mod, Limit) -> ModAnalysis</name>
       <fsummary>Collect and analyse call counters.</fsummary>
       <type>
         <v>Limit = integer()</v>
@@ -122,7 +122,7 @@
       </desc>
     </func>
     <func>
-      <name>pause() -> integer()</name>
+      <name since="">pause() -> integer()</name>
       <fsummary>Pause running call count trace for all functions.</fsummary>
       <desc>
         <p>Pause call count tracing for all functions in all modules
@@ -137,9 +137,9 @@
       </desc>
     </func>
     <func>
-      <name>pause(FuncSpec) -> integer()</name>
-      <name>pause(Mod, Func) -> integer()</name>
-      <name>pause(Mod, Func, Arity) -> integer()</name>
+      <name since="">pause(FuncSpec) -> integer()</name>
+      <name since="">pause(Mod, Func) -> integer()</name>
+      <name since="">pause(Mod, Func, Arity) -> integer()</name>
       <fsummary>Pause running call count trace for matching functions.</fsummary>
       <type>
         <v>FuncSpec = Mod | {Mod,Func,Arity}, {FS}</v>
@@ -167,10 +167,10 @@
       </desc>
     </func>
     <func>
-      <name>restart() -> integer()</name>
-      <name>restart(FuncSpec) -> integer()</name>
-      <name>restart(Mod, Func) -> integer()</name>
-      <name>restart(Mod, Func, Arity) -> integer()</name>
+      <name since="">restart() -> integer()</name>
+      <name since="">restart(FuncSpec) -> integer()</name>
+      <name since="">restart(Mod, Func) -> integer()</name>
+      <name since="">restart(Mod, Func, Arity) -> integer()</name>
       <fsummary>Restart existing call counters for matching functions.</fsummary>
       <type>
         <v>FuncSpec = Mod | {Mod,Func,Arity}, {FS}</v>
@@ -197,7 +197,7 @@
       </desc>
     </func>
     <func>
-      <name>start() -> integer()</name>
+      <name since="">start() -> integer()</name>
       <fsummary>Start call count tracing for all functions.</fsummary>
       <desc>
         <p>Start call count tracing for all functions in all modules, 
@@ -212,9 +212,9 @@
       </desc>
     </func>
     <func>
-      <name>start(FuncSpec) -> integer()</name>
-      <name>start(Mod, Func) -> integer()</name>
-      <name>start(Mod, Func, Arity) -> integer()</name>
+      <name since="">start(FuncSpec) -> integer()</name>
+      <name since="">start(Mod, Func) -> integer()</name>
+      <name since="">start(Mod, Func, Arity) -> integer()</name>
       <fsummary>Start call count tracing for matching functions.</fsummary>
       <type>
         <v>FuncSpec = Mod | {Mod,Func,Arity}, {FS}</v>
@@ -240,7 +240,7 @@
       </desc>
     </func>
     <func>
-      <name>stop() -> integer()</name>
+      <name since="">stop() -> integer()</name>
       <fsummary>Stop call count tracing for all functions.</fsummary>
       <desc>
         <p>Stop call count tracing for all functions in all modules, 
@@ -255,9 +255,9 @@
       </desc>
     </func>
     <func>
-      <name>stop(FuncSpec) -> integer()</name>
-      <name>stop(Mod, Func) -> integer()</name>
-      <name>stop(Mod, Func, Arity) -> integer()</name>
+      <name since="">stop(FuncSpec) -> integer()</name>
+      <name since="">stop(Mod, Func) -> integer()</name>
+      <name since="">stop(Mod, Func, Arity) -> integer()</name>
       <fsummary>Stop call count tracing for matching functions.</fsummary>
       <type>
         <v>FuncSpec = Mod | {Mod,Func,Arity}, {FS}</v>
diff --git a/lib/tools/doc/src/eprof.xml b/lib/tools/doc/src/eprof.xml
index f098b7d39e..c9e4edd991 100644
--- a/lib/tools/doc/src/eprof.xml
+++ b/lib/tools/doc/src/eprof.xml
@@ -28,7 +28,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>eprof</module>
+  <module since="">eprof</module>
   <modulesummary>A Time Profiling Tool for Erlang</modulesummary>
   <description>
     <p>The module <c>eprof</c> provides a set of functions for time
@@ -40,7 +40,7 @@
   </description>
   <funcs>
     <func>
-      <name>start() -> {ok,Pid} | {error,Reason}</name>
+      <name since="">start() -> {ok,Pid} | {error,Reason}</name>
       <fsummary>Start Eprof.</fsummary>
       <type>
         <v>Pid = pid()</v>
@@ -51,9 +51,9 @@
       </desc>
     </func>
     <func>
-      <name>start_profiling(Rootset) -> profiling | {error, Reason}</name>
-      <name>start_profiling(Rootset,Pattern) -> profiling | {error, Reason}</name>
-      <name>start_profiling(Rootset,Pattern,Options) -> profiling | {error, Reason}</name>
+      <name since="">start_profiling(Rootset) -> profiling | {error, Reason}</name>
+      <name since="OTP R14B">start_profiling(Rootset,Pattern) -> profiling | {error, Reason}</name>
+      <name since="OTP R16B01">start_profiling(Rootset,Pattern,Options) -> profiling | {error, Reason}</name>
       <fsummary>Start profiling.</fsummary>
       <type>
         <v>Rootset = [atom() | pid()]</v>
@@ -79,7 +79,7 @@
       </desc>
     </func>
     <func>
-      <name>stop_profiling() -> profiling_stopped | profiling_already_stopped</name>
+      <name since="">stop_profiling() -> profiling_stopped | profiling_already_stopped</name>
       <fsummary>Stop profiling.</fsummary>
       <desc>
         <p>Stops profiling started with <c>start_profiling/1</c> or
@@ -87,14 +87,14 @@
       </desc>
     </func>
     <func>
-      <name>profile(Fun) -> profiling | {error, Reason}</name>
-      <name>profile(Fun, Options) -> profiling | {error, Reason}</name>
-      <name>profile(Rootset) -> profiling | {error, Reason}</name>
-      <name>profile(Rootset,Fun) -> {ok, Value} | {error,Reason}</name>
-      <name>profile(Rootset,Fun,Pattern) -> {ok, Value} | {error, Reason}</name>
-      <name>profile(Rootset,Module,Function,Args) -> {ok, Value} | {error, Reason}</name>
-      <name>profile(Rootset,Module,Function,Args,Pattern) -> {ok, Value} | {error, Reason}</name>
-      <name>profile(Rootset,Module,Function,Args,Pattern,Options) -> {ok, Value} | {error, Reason}</name>
+      <name since="">profile(Fun) -> profiling | {error, Reason}</name>
+      <name since="">profile(Fun, Options) -> profiling | {error, Reason}</name>
+      <name since="">profile(Rootset) -> profiling | {error, Reason}</name>
+      <name since="">profile(Rootset,Fun) -> {ok, Value} | {error,Reason}</name>
+      <name since="OTP R14B">profile(Rootset,Fun,Pattern) -> {ok, Value} | {error, Reason}</name>
+      <name since="">profile(Rootset,Module,Function,Args) -> {ok, Value} | {error, Reason}</name>
+      <name since="OTP R14B">profile(Rootset,Module,Function,Args,Pattern) -> {ok, Value} | {error, Reason}</name>
+      <name since="OTP R16B01">profile(Rootset,Module,Function,Args,Pattern,Options) -> {ok, Value} | {error, Reason}</name>
       <fsummary>Start profiling.</fsummary>
       <type>
         <v>Rootset = [atom() | pid()]</v>
@@ -128,9 +128,9 @@
       </desc>
     </func>
     <func>
-      <name>analyze() -> ok</name>
-      <name>analyze(Type) -> ok</name>
-      <name>analyze(Type,Options) -> ok</name>
+      <name since="OTP R14B">analyze() -> ok</name>
+      <name since="OTP R14B">analyze(Type) -> ok</name>
+      <name since="OTP R14B">analyze(Type,Options) -> ok</name>
       <fsummary>Display profiling results per process.</fsummary>
       <type>
         <v>Type = procs | total</v>
@@ -152,7 +152,7 @@
       </desc>
     </func>
     <func>
-      <name>log(File) -> ok</name>
+      <name since="">log(File) -> ok</name>
       <fsummary>Activate logging of <c>eprof</c>printouts.</fsummary>
       <type>
         <v>File = atom() | string()</v>
@@ -164,7 +164,7 @@
       </desc>
     </func>
     <func>
-      <name>stop() -> stopped</name>
+      <name since="">stop() -> stopped</name>
       <fsummary>Stop Eprof.</fsummary>
       <desc>
         <p>Stops the Eprof server.</p>
diff --git a/lib/tools/doc/src/fprof.xml b/lib/tools/doc/src/fprof.xml
index 1fd828d127..4bb8862016 100644
--- a/lib/tools/doc/src/fprof.xml
+++ b/lib/tools/doc/src/fprof.xml
@@ -32,7 +32,7 @@
     <rev>PA1</rev>
     <file>fprof.sgml</file>
   </header>
-  <module>fprof</module>
+  <module since="">fprof</module>
   <modulesummary>A Time Profiling Tool using trace to file for minimal runtime performance impact.</modulesummary>
   <description>
     <p>This module is used to profile a program
@@ -101,7 +101,7 @@
   </description>
   <funcs>
     <func>
-      <name>start() -> {ok, Pid} | {error, {already_started, Pid}}</name>
+      <name since="">start() -> {ok, Pid} | {error, {already_started, Pid}}</name>
       <fsummary>Starts the <c>fprof</c>&nbsp;server.</fsummary>
       <type>
         <v>Pid = pid()</v>
@@ -117,14 +117,14 @@
       </desc>
     </func>
     <func>
-      <name>stop() -> ok</name>
+      <name since="">stop() -> ok</name>
       <fsummary>Same as <c>stop(normal)</c>.</fsummary>
       <desc>
         <p>Same as <c>stop(normal)</c>.</p>
       </desc>
     </func>
     <func>
-      <name>stop(Reason) -> ok</name>
+      <name since="">stop(Reason) -> ok</name>
       <fsummary>Stops the <c>fprof</c>&nbsp;server.</fsummary>
       <type>
         <v>Reason = term()</v>
@@ -149,7 +149,7 @@
       </desc>
     </func>
     <func>
-      <name>apply(Func, Args) -> term()</name>
+      <name since="">apply(Func, Args) -> term()</name>
       <fsummary>Same as <c>apply(Func, Args, [])</c>.</fsummary>
       <type>
         <v>Func = function() | {Module, Function}</v>
@@ -162,7 +162,7 @@
       </desc>
     </func>
     <func>
-      <name>apply(Module, Function, Args) -> term()</name>
+      <name since="">apply(Module, Function, Args) -> term()</name>
       <fsummary>Same as <c>apply({Module, Function}, Args, [])</c>.</fsummary>
       <type>
         <v>Args = [term()]</v>
@@ -174,7 +174,7 @@
       </desc>
     </func>
     <func>
-      <name>apply(Func, Args, OptionList) -> term()</name>
+      <name since="">apply(Func, Args, OptionList) -> term()</name>
       <fsummary>Calls <c>erlang:apply(Func, Args)</c>surrounded by<c>trace([start | OptionList])</c>and<c>trace(stop)</c>.</fsummary>
       <type>
         <v>Func = function() | {Module, Function}</v>
@@ -210,7 +210,7 @@
       </desc>
     </func>
     <func>
-      <name>apply(Module, Function, Args, OptionList) -> term()</name>
+      <name since="">apply(Module, Function, Args, OptionList) -> term()</name>
       <fsummary>Same as <c>apply({Module, Function}, Args, OptionList)</c>.</fsummary>
       <type>
         <v>Module = atom()</v>
@@ -228,7 +228,7 @@
       </desc>
     </func>
     <func>
-      <name>trace(start, Filename) -> ok | {error, Reason} |  {'EXIT', ServerPid, Reason}</name>
+      <name since="">trace(start, Filename) -> ok | {error, Reason} |  {'EXIT', ServerPid, Reason}</name>
       <fsummary>Same as <c>trace([start, {file, Filename}])</c>.</fsummary>
       <type>
         <v>Reason = term()</v>
@@ -238,7 +238,7 @@
       </desc>
     </func>
     <func>
-      <name>trace(verbose, Filename) -> ok | {error, Reason} |  {'EXIT', ServerPid, Reason}</name>
+      <name since="">trace(verbose, Filename) -> ok | {error, Reason} |  {'EXIT', ServerPid, Reason}</name>
       <fsummary>Same as <c>trace([start, verbose, {file, Filename}])</c>.</fsummary>
       <type>
         <v>Reason = term()</v>
@@ -249,7 +249,7 @@
       </desc>
     </func>
     <func>
-      <name>trace(OptionName, OptionValue) -> ok | {error, Reason} |  {'EXIT', ServerPid, Reason}</name>
+      <name since="">trace(OptionName, OptionValue) -> ok | {error, Reason} |  {'EXIT', ServerPid, Reason}</name>
       <fsummary>Same as <c>trace([{OptionName, OptionValue}])</c>.</fsummary>
       <type>
         <v>OptionName = atom()</v>
@@ -262,7 +262,7 @@
       </desc>
     </func>
     <func>
-      <name>trace(verbose) -> ok | {error, Reason} |  {'EXIT', ServerPid, Reason}</name>
+      <name since="">trace(verbose) -> ok | {error, Reason} |  {'EXIT', ServerPid, Reason}</name>
       <fsummary>Same as <c>trace([start, verbose])</c>.</fsummary>
       <type>
         <v>Reason = term()</v>
@@ -272,7 +272,7 @@
       </desc>
     </func>
     <func>
-      <name>trace(OptionName) -> ok | {error, Reason} |  {'EXIT', ServerPid, Reason}</name>
+      <name since="">trace(OptionName) -> ok | {error, Reason} |  {'EXIT', ServerPid, Reason}</name>
       <fsummary>Same as <c>trace([OptionName])</c>.</fsummary>
       <type>
         <v>OptionName = atom()</v>
@@ -283,7 +283,7 @@
       </desc>
     </func>
     <func>
-      <name>trace({OptionName, OptionValue}) -> ok | {error, Reason} |  {'EXIT', ServerPid, Reason}</name>
+      <name since="">trace({OptionName, OptionValue}) -> ok | {error, Reason} |  {'EXIT', ServerPid, Reason}</name>
       <fsummary>Same as <c>trace([{OptionName, OptionValue}])</c>.</fsummary>
       <type>
         <v>OptionName = atom()</v>
@@ -296,7 +296,7 @@
       </desc>
     </func>
     <func>
-      <name>trace([Option]) -> ok | {error, Reason} |  {'EXIT', ServerPid, Reason}</name>
+      <name since="">trace([Option]) -> ok | {error, Reason} |  {'EXIT', ServerPid, Reason}</name>
       <fsummary>Starts or stops tracing.</fsummary>
       <type>
         <v>Option = start | stop | {procs, PidSpec} | {procs, [PidSpec]} | verbose | {verbose, bool()} |  file | {file, Filename} | {tracer, Tracer}</v>
@@ -360,7 +360,7 @@
       </desc>
     </func>
     <func>
-      <name>profile() -> ok | {error, Reason} |  {'EXIT', ServerPid, Reason}</name>
+      <name since="">profile() -> ok | {error, Reason} |  {'EXIT', ServerPid, Reason}</name>
       <fsummary>Same as <c>profile([])</c>.</fsummary>
       <type>
         <v>Reason = term()</v>
@@ -370,7 +370,7 @@
       </desc>
     </func>
     <func>
-      <name>profile(OptionName, OptionValue) -> ok | {error, Reason} |  {'EXIT', ServerPid, Reason}</name>
+      <name since="">profile(OptionName, OptionValue) -> ok | {error, Reason} |  {'EXIT', ServerPid, Reason}</name>
       <fsummary>Same as <c>profile([{OptionName, OptionValue}])</c>.</fsummary>
       <type>
         <v>OptionName = atom()</v>
@@ -383,7 +383,7 @@
       </desc>
     </func>
     <func>
-      <name>profile(OptionName) -> ok | {error, Reason} |  {'EXIT', ServerPid, Reason}</name>
+      <name since="">profile(OptionName) -> ok | {error, Reason} |  {'EXIT', ServerPid, Reason}</name>
       <fsummary>Same as <c>profile([OptionName])</c>.</fsummary>
       <type>
         <v>OptionName = atom()</v>
@@ -394,7 +394,7 @@
       </desc>
     </func>
     <func>
-      <name>profile({OptionName, OptionValue}) -> ok | {error, Reason} |  {'EXIT', ServerPid, Reason}</name>
+      <name since="">profile({OptionName, OptionValue}) -> ok | {error, Reason} |  {'EXIT', ServerPid, Reason}</name>
       <fsummary>Same as <c>profile([{OptionName, OptionValue}])</c>.</fsummary>
       <type>
         <v>OptionName = atom()</v>
@@ -407,7 +407,7 @@
       </desc>
     </func>
     <func>
-      <name>profile([Option]) -> ok | {ok, Tracer} | {error, Reason} |  {'EXIT', ServerPid, Reason}</name>
+      <name since="">profile([Option]) -> ok | {ok, Tracer} | {error, Reason} |  {'EXIT', ServerPid, Reason}</name>
       <fsummary>Compiles a trace into raw profile data held by the <c>fprof</c>&nbsp;server.</fsummary>
       <type>
         <v>Option = file | {file, Filename} | dump | {dump, Dump} |  append | start | stop</v>
@@ -465,7 +465,7 @@
       </desc>
     </func>
     <func>
-      <name>analyse() -> ok | {error, Reason} |  {'EXIT', ServerPid, Reason}</name>
+      <name since="">analyse() -> ok | {error, Reason} |  {'EXIT', ServerPid, Reason}</name>
       <fsummary>Same as <c>analyse([])</c>.</fsummary>
       <type>
         <v>Reason = term()</v>
@@ -475,7 +475,7 @@
       </desc>
     </func>
     <func>
-      <name>analyse(OptionName, OptionValue) -> ok | {error, Reason} |  {'EXIT', ServerPid, Reason}</name>
+      <name since="">analyse(OptionName, OptionValue) -> ok | {error, Reason} |  {'EXIT', ServerPid, Reason}</name>
       <fsummary>Same as <c>analyse([{OptionName, OptionValue}])</c>.</fsummary>
       <type>
         <v>OptionName = atom()</v>
@@ -488,7 +488,7 @@
       </desc>
     </func>
     <func>
-      <name>analyse(OptionName) -> ok | {error, Reason} |  {'EXIT', ServerPid, Reason}</name>
+      <name since="">analyse(OptionName) -> ok | {error, Reason} |  {'EXIT', ServerPid, Reason}</name>
       <fsummary>Same as <c>analyse([OptionName])</c>.</fsummary>
       <type>
         <v>OptionName = atom()</v>
@@ -499,7 +499,7 @@
       </desc>
     </func>
     <func>
-      <name>analyse({OptionName, OptionValue}) -> ok | {error, Reason} |  {'EXIT', ServerPid, Reason}</name>
+      <name since="">analyse({OptionName, OptionValue}) -> ok | {error, Reason} |  {'EXIT', ServerPid, Reason}</name>
       <fsummary>Same as <c>analyse([{OptionName, OptionValue}])</c>.</fsummary>
       <type>
         <v>OptionName = atom()</v>
@@ -512,7 +512,7 @@
       </desc>
     </func>
     <func>
-      <name>analyse([Option]) -> ok | {error, Reason} |  {'EXIT', ServerPid, Reason}</name>
+      <name since="">analyse([Option]) -> ok | {error, Reason} |  {'EXIT', ServerPid, Reason}</name>
       <fsummary>Analyses raw profile data in the <c>fprof</c>&nbsp;server.</fsummary>
       <type>
         <v>Option = dest | {dest, Dest} | append | {cols, Cols} |  callers | {callers, bool()} | no_callers | {sort, SortSpec} | totals | {totals, bool()} |  details | {details, bool()} | no_details</v>
diff --git a/lib/tools/doc/src/instrument.xml b/lib/tools/doc/src/instrument.xml
index 9fd9332373..7e9cbaebb0 100644
--- a/lib/tools/doc/src/instrument.xml
+++ b/lib/tools/doc/src/instrument.xml
@@ -32,7 +32,7 @@
     <rev>PA1</rev>
     <file>instrument.sgml</file>
   </header>
-  <module>instrument</module>
+  <module since="">instrument</module>
   <modulesummary>Analysis and Utility Functions for Instrumentation</modulesummary>
   <description>
     <p>The module <c>instrument</c> contains support for studying the resource
@@ -92,7 +92,7 @@
   <funcs>
 
     <func>
-      <name name="allocations" arity="0"/>
+      <name name="allocations" arity="0" since="OTP 21.0"/>
       <fsummary>Return a summary of all allocations in the system.</fsummary>
       <desc>
         <p>Shorthand for
@@ -101,7 +101,7 @@
     </func>
 
     <func>
-      <name name="allocations" arity="1"/>
+      <name name="allocations" arity="1" since="OTP 21.0"/>
       <fsummary>Return a summary of all allocations filtered by allocator type
         and scheduler id.</fsummary>
       <desc>
@@ -111,15 +111,18 @@
           default, but this can be configured an a per-allocator basis with the
           <seealso marker="erts:erts_alloc#M_atags"><c>+M&lt;S&gt;atags</c>
           </seealso> emulator option.</p>
-        <p>If tagged allocations are not enabled on any of the specified
-          allocator types, the call will fail with
-          <c>{error, not_enabled}</c>.</p>
+        <p>If the specified allocator types are not enabled, the call will fail
+          with <c>{error, not_enabled}</c>.</p>
         <p>The following options can be used:</p>
         <taglist>
           <tag><c>allocator_types</c></tag>
           <item>
-            <p>The allocator types that will be searched. Defaults to all
-              <c>alloc_util</c> allocators.</p>
+            <p>The allocator types that will be searched. Note that blocks can
+              move freely between allocator types, so restricting the search to
+              certain allocators may return unexpected types (e.g. process
+              heaps when searching binary_alloc), or hide blocks that were
+              migrated out.</p>
+            <p>Defaults to all <c>alloc_util</c> allocators.</p>
           </item>
           <tag><c>scheduler_ids</c></tag>
           <item>
@@ -170,7 +173,7 @@
     </func>
 
     <func>
-      <name name="carriers" arity="0"/>
+      <name name="carriers" arity="0" since="OTP 21.0"/>
       <fsummary>Return a list of all carriers in the system.</fsummary>
       <desc>
         <p>Shorthand for
@@ -179,7 +182,7 @@
     </func>
 
     <func>
-      <name name="carriers" arity="1"/>
+      <name name="carriers" arity="1" since="OTP 21.0"/>
       <fsummary>Return a list of all carriers filtered by allocator type and
         scheduler id.</fsummary>
       <desc>
diff --git a/lib/tools/doc/src/lcnt.xml b/lib/tools/doc/src/lcnt.xml
index d2595cdb60..1d434decfc 100644
--- a/lib/tools/doc/src/lcnt.xml
+++ b/lib/tools/doc/src/lcnt.xml
@@ -34,7 +34,7 @@
 	<rev>PA1</rev>
 	<file>lcnt.xml</file>
     </header>
-    <module>lcnt</module>
+    <module since="OTP R13B04">lcnt</module>
     <modulesummary>A runtime system Lock Profiling tool.</modulesummary>
     <description>
 	<p>The <c>lcnt</c> module is used to profile the internal ethread locks in the
@@ -71,7 +71,7 @@
     <funcs>
 
 	<func>
-	    <name>start() -> {ok, Pid} | {error, {already_started, Pid}} </name>
+	    <name since="OTP R13B04">start() -> {ok, Pid} | {error, {already_started, Pid}} </name>
 	    <fsummary>Starts the lock profiler server.</fsummary>
 	    <type>
 		<v>Pid = pid()</v>
@@ -84,7 +84,7 @@
 	</func>
 
 	<func>
-	    <name>stop() -> ok</name>
+	    <name since="OTP R13B04">stop() -> ok</name>
 	    <fsummary>Stops the lock profiler server.</fsummary>
 	    <desc>
 		<p>Stops the lock profiler server.</p>
@@ -92,13 +92,13 @@
 	</func>
 
 	<func>
-	    <name>collect() -> ok</name>
+	    <name since="OTP R13B04">collect() -> ok</name>
 	    <fsummary>Same as <c>collect(node())</c>.</fsummary>
 	    <desc><p>Same as <c>collect(node())</c>.</p></desc>
 	</func>
 
 	<func>
-	    <name>collect(Node) -> ok</name>
+	    <name since="OTP R13B04">collect(Node) -> ok</name>
 	    <fsummary>Collects lock statistics from the runtime system.</fsummary>
 	    <type>
 		<v>Node = node()</v>
@@ -113,13 +113,13 @@
 	</func>
 
 	<func>
-	    <name>clear() -> ok</name>
+	    <name since="OTP R13B04">clear() -> ok</name>
 	    <fsummary>Same as <c>clear(node())</c>.</fsummary>
 	    <desc><p>Same as <c>clear(node())</c>.</p></desc>
 	</func>
 
 	<func>
-	    <name>clear(Node) -> ok</name>
+	    <name since="OTP R13B04">clear(Node) -> ok</name>
 	    <fsummary>Clears the internal lock statistics from runtime system.</fsummary>
 	    <type>
 		<v>Node = node()</v>
@@ -133,12 +133,12 @@
 	    </desc>
 	</func>
 	<func>
-	    <name>conflicts() -> ok</name>
+	    <name since="OTP R13B04">conflicts() -> ok</name>
 	    <fsummary>Same as <c>conflicts([])</c>.</fsummary>
 	    <desc><p>Same as <c>conflicts([])</c>.</p></desc>
 	</func>
 	<func>
-	    <name>conflicts([Option]) -> ok</name>
+	    <name since="OTP R13B04">conflicts([Option]) -> ok</name>
 	    <fsummary>Prints a list of internal lock counters.</fsummary>
 	    <type>
 		<v>Option     = {sort, Sort} | {reverse, bool()} | {thresholds, [Thresholds]} | {print, [Print | {Print, integer()}]} | {max_locks, MaxLocks} | {combine, bool()}</v>
@@ -154,14 +154,14 @@
 	</func>
 
 	<func>
-	    <name>locations() -> ok</name>
+	    <name since="OTP R13B04">locations() -> ok</name>
 	    <fsummary>Same as <c>locations([])</c>.</fsummary>
 	    <desc>
 		<p>Same as <c>locations([])</c>.</p>
 	    </desc>
 	</func>
 	<func>
-	    <name>locations([Option]) -> ok</name>
+	    <name since="OTP R13B04">locations([Option]) -> ok</name>
 	    <fsummary>Prints a list of internal lock counters by source code locations.</fsummary>
 	    <type>
 		<v>Option     = {sort, Sort} | {thresholds, [Thresholds]} | {print, [Print | {Print, integer()}]} | {max_locks, MaxLocks} | {combine, bool()}</v>
@@ -177,12 +177,12 @@
 	</func>
 
 	<func>
-	    <name>inspect(Lock) -> ok</name>
+	    <name since="OTP R13B04">inspect(Lock) -> ok</name>
 	    <fsummary>Same as <c>inspect(Lock, [])</c>.</fsummary>
 	    <desc><p>Same as <c>inspect(Lock, [])</c>.</p></desc>
 	</func>
 	<func>
-	    <name>inspect(Lock, [Option]) -> ok</name>
+	    <name since="OTP R13B04">inspect(Lock, [Option]) -> ok</name>
 	    <fsummary>Prints a list of internal lock counters for a specific lock.</fsummary>
 	    <type>
 		<v>Lock       = Name | {Name, Id | [Id]}</v>
@@ -268,7 +268,7 @@
 	</func>
 
 	<func>
-	    <name>information() -> ok</name>
+	    <name since="OTP R13B04">information() -> ok</name>
 	    <fsummary>Prints lcnt server state and generic information about collected lock statistics.</fsummary>
 	    <desc>
 		<p>Prints lcnt server state and generic information about collected lock statistics.</p>
@@ -276,7 +276,7 @@
 	</func>
 
 	<func>
-	    <name>swap_pid_keys() -> ok</name>
+	    <name since="OTP R13B04">swap_pid_keys() -> ok</name>
 	    <fsummary>Swaps places on <c>Name</c> and <c>Id</c> space for ports and processes.</fsummary>
 	    <desc>
 		<p>Swaps places on <c>Name</c> and <c>Id</c> space for ports and processes.</p>
@@ -284,7 +284,7 @@
 	</func>
 
 	<func>
-	    <name>load(Filename) -> ok</name>
+	    <name since="OTP R13B04">load(Filename) -> ok</name>
 	    <fsummary>Restores previously saved data to the server.</fsummary>
 	    <type>
 		<v>Filename = filename()</v>
@@ -295,7 +295,7 @@
 	</func>
 
 	<func>
-	    <name>save(Filename) -> ok</name>
+	    <name since="OTP R13B04">save(Filename) -> ok</name>
 	    <fsummary>Saves the collected data to file.</fsummary>
 	    <type>
 		<v>Filename = filename()</v>
@@ -312,7 +312,7 @@
     </section>
     <funcs>
 	<func>
-	    <name>apply(Fun) -> term()</name>
+	    <name since="OTP R13B04">apply(Fun) -> term()</name>
 	    <fsummary>Same as <c>apply(Fun, [])</c>.</fsummary>
 	    <type>
 		<v>Fun = fun()</v>
@@ -322,7 +322,7 @@
 	    </desc>
 	</func>
 	<func>
-	    <name>apply(Fun, Args) -> term()</name>
+	    <name since="OTP R13B04">apply(Fun, Args) -> term()</name>
 	    <fsummary>Same as <c>apply(Module, Function, Args)</c>.</fsummary>
 	    <type>
 		<v>Fun = fun()</v>
@@ -333,7 +333,7 @@
 	    </desc>
 	</func>
 	<func>
-	    <name>apply(Module, Function, Args) -> term()</name>
+	    <name since="OTP R13B04">apply(Module, Function, Args) -> term()</name>
 	    <fsummary>Clears counters, applies function and collects the profiling results.</fsummary>
 	    <type>
 		<v>Module = atom()</v>
@@ -358,12 +358,12 @@
 	</func>
 
 	<func>
-	    <name>pid(Id, Serial) -> pid()</name>
+	    <name since="OTP R13B04">pid(Id, Serial) -> pid()</name>
 	    <fsummary>Same as <c>pid(node(), Id, Serial)</c>.</fsummary>
 	    <desc><p>Same as <c>pid(node(), Id, Serial)</c>.</p></desc>
 	</func>
 	<func>
-	    <name>pid(Node, Id, Serial) -> pid()</name>
+	    <name since="OTP R13B04">pid(Node, Id, Serial) -> pid()</name>
 	    <fsummary>Creates a process id with creation 0.</fsummary>
 	    <type>
 		<v>Node = node()</v>
@@ -376,12 +376,12 @@
 	</func>
 
 	<func>
-	    <name>port(Id) -> port()</name>
+	    <name since="OTP R13B04">port(Id) -> port()</name>
 	    <fsummary>Same as <c>port(node(), Id)</c>.</fsummary>
 	    <desc><p>Same as <c>port(node(), Id)</c>.</p></desc>
 	</func>
 	<func>
-	    <name>port(Node, Id) -> port()</name>
+	    <name since="OTP R13B04">port(Node, Id) -> port()</name>
 	    <fsummary>Creates a port id with creation 0.</fsummary>
 	    <type>
 		<v>Node = node()</v>
@@ -399,12 +399,12 @@
 
     <funcs>
 	<func>
-	    <name>rt_collect() -> [lock_counter_data()]</name>
+	    <name since="OTP R13B04">rt_collect() -> [lock_counter_data()]</name>
 	    <fsummary>Same as <c>rt_collect(node())</c>.</fsummary>
 	    <desc> <p>Same as <c>rt_collect(node())</c>.</p> </desc>
 	</func>
 	<func>
-	    <name>rt_collect(Node) -> [lock_counter_data()]</name>
+	    <name since="OTP R13B04">rt_collect(Node) -> [lock_counter_data()]</name>
 	    <fsummary>Returns a list of raw lock counter data.</fsummary>
 	    <type>
 		<v>Node = node()</v>
@@ -413,12 +413,12 @@
 	</func>
 
 	<func>
-	    <name>rt_clear() -> ok</name>
+	    <name since="OTP R13B04">rt_clear() -> ok</name>
 	    <fsummary>Same as <c>rt_clear(node())</c>.</fsummary>
 	    <desc> <p>Same as <c>rt_clear(node())</c>.</p> </desc>
 	</func>
 	<func>
-	    <name>rt_clear(Node) -> ok</name>
+	    <name since="OTP R13B04">rt_clear(Node) -> ok</name>
 	    <fsummary>Clears the internal counters.</fsummary>
 	    <type>
 		<v>Node = node()</v>
@@ -427,13 +427,13 @@
 	</func>
 
         <func>
-            <name>rt_mask() -> [category_atom()]</name>
+            <name since="OTP 20.1">rt_mask() -> [category_atom()]</name>
             <fsummary>Same as <c>rt_mask(node())</c>.</fsummary>
             <desc><p>Same as <c>rt_mask(node())</c>.</p></desc>
         </func>
 
         <func>
-            <name>rt_mask(Node) -> [category_atom()]</name>
+            <name since="OTP 20.1">rt_mask(Node) -> [category_atom()]</name>
             <fsummary>Returns the current lock category mask.</fsummary>
             <type>
                 <v>Node = node()</v>
@@ -447,7 +447,7 @@
         </func>
 
         <func>
-            <name>rt_mask(Categories) -> ok | {error, copy_save_enabled}</name>
+            <name since="OTP 20.1">rt_mask(Categories) -> ok | {error, copy_save_enabled}</name>
             <fsummary>Same as <c>rt_mask(node(), Categories)</c>.</fsummary>
             <type>
                 <v>Categories = [atom()]</v>
@@ -456,7 +456,7 @@
         </func>
 
         <func>
-            <name>rt_mask(Node, Categories) -> ok | {error, copy_save_enabled}</name>
+            <name since="OTP 20.1">rt_mask(Node, Categories) -> ok | {error, copy_save_enabled}</name>
             <fsummary>Changes the lock category mask.</fsummary>
             <type>
                 <v>Node = node()</v>
@@ -489,12 +489,12 @@
         </func>
 
 	<func>
-	    <name>rt_opt({Type, bool()}) -> bool()</name>
+	    <name since="OTP R13B04">rt_opt({Type, bool()}) -> bool()</name>
 	    <fsummary>Same as <c>rt_opt(node(), {Type, Opt})</c>.</fsummary>
 	    <desc> <p>Same as <c>rt_opt(node(), {Type, Opt})</c>.</p> </desc>
 	</func>
 	<func>
-	    <name>rt_opt(Node, {Type, bool()}) -> bool()</name>
+	    <name since="OTP R13B04">rt_opt(Node, {Type, bool()}) -> bool()</name>
 	    <fsummary>Changes the lock counter behavior and returns the previous behaviour.</fsummary>
 	    <type>
 		<v>Node = node()</v>
diff --git a/lib/tools/doc/src/make.xml b/lib/tools/doc/src/make.xml
index 123fcd4afc..af2404707f 100644
--- a/lib/tools/doc/src/make.xml
+++ b/lib/tools/doc/src/make.xml
@@ -30,7 +30,7 @@
     <date></date>
     <rev></rev>
   </header>
-  <module>make</module>
+  <module since="">make</module>
   <modulesummary>A Make Utility for Erlang</modulesummary>
   <description>
     <p>The module <c>make</c> provides a set of functions similar to
@@ -38,8 +38,8 @@
   </description>
   <funcs>
     <func>
-      <name>all() -> up_to_date | error</name>
-      <name>all(Options) -> up_to_date | error</name>
+      <name since="">all() -> up_to_date | error</name>
+      <name since="">all(Options) -> up_to_date | error</name>
       <fsummary>Compile a set of modules.</fsummary>
       <type>
         <v>Options = [Option]</v>
@@ -87,8 +87,8 @@
       </desc>
     </func>
     <func>
-      <name>files(ModFiles) -> up_to_date | error</name>
-      <name>files(ModFiles, Options) -> up_to_date | error</name>
+      <name since="">files(ModFiles) -> up_to_date | error</name>
+      <name since="">files(ModFiles, Options) -> up_to_date | error</name>
       <fsummary>Compile a set of modules.</fsummary>
       <type>
         <v>ModFiles = [Module | File]</v>
diff --git a/lib/tools/doc/src/notes.xml b/lib/tools/doc/src/notes.xml
index a6781dfdb3..28f8346a19 100644
--- a/lib/tools/doc/src/notes.xml
+++ b/lib/tools/doc/src/notes.xml
@@ -31,6 +31,45 @@
   </header>
   <p>This document describes the changes made to the Tools application.</p>
 
+<section><title>Tools 3.1</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Minor fixes for <c>make clean</c>.</p>
+          <p>
+	    Own Id: OTP-15657</p>
+        </item>
+      </list>
+    </section>
+
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+          <p>
+	    In the HTML file generated by
+	    <c>cover:analyse_to_file/1,2</c>, a link is now added to
+	    the line number. This makes it easier to share pointers
+	    to specific lines.</p>
+          <p>
+	    Own Id: OTP-15541</p>
+        </item>
+        <item>
+          <p>
+	    Uncovered lines are now marked with a sad face,
+	    <c>:-(</c>, in the HTML output from
+	    <c>cover:analyse_to_file/1,2</c>. This is to make these
+	    lines easier to find by search.</p>
+          <p>
+	    Own Id: OTP-15542</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Tools 3.0.2</title>
 
     <section><title>Improvements and New Features</title>
diff --git a/lib/tools/doc/src/tags.xml b/lib/tools/doc/src/tags.xml
index ea0ae5cc4d..90a8b28177 100644
--- a/lib/tools/doc/src/tags.xml
+++ b/lib/tools/doc/src/tags.xml
@@ -32,7 +32,7 @@
     <rev>A</rev>
     <file>tags.sgml</file>
   </header>
-  <module>tags</module>
+  <module since="">tags</module>
   <modulesummary>Generate Emacs TAGS file from Erlang source files</modulesummary>
   <description>
     <p>A <c>TAGS</c> file is used by Emacs to find function and variable
@@ -42,14 +42,14 @@
   </description>
   <funcs>
     <func>
-      <name>file(File [, Options])</name>
+      <name since="">file(File [, Options])</name>
       <fsummary>Create a <c>TAGS</c>file for the file <c>File</c>.</fsummary>
       <desc>
         <p>Create a <c>TAGS</c> file for the file <c>File</c>.</p>
       </desc>
     </func>
     <func>
-      <name>files(FileList [, Options])</name>
+      <name since="">files(FileList [, Options])</name>
       <fsummary>Create a TAGS file for the files in the list<c>FileList</c>.</fsummary>
       <desc>
         <p>Create a TAGS file for the files in the list
@@ -57,7 +57,7 @@
       </desc>
     </func>
     <func>
-      <name>dir(Dir [, Options])</name>
+      <name since="">dir(Dir [, Options])</name>
       <fsummary>Create a TAGS file for all files in directory<c>Dir</c>.</fsummary>
       <desc>
         <p>Create a TAGS file for all files in directory
@@ -65,7 +65,7 @@
       </desc>
     </func>
     <func>
-      <name>dirs(DirList [, Options])</name>
+      <name since="">dirs(DirList [, Options])</name>
       <fsummary>Create a TAGS file for all files in any directory in<c>DirList</c>.</fsummary>
       <desc>
         <p>Create a TAGS file for all files in any directory in
@@ -73,7 +73,7 @@
       </desc>
     </func>
     <func>
-      <name>subdir(Dir [, Options])</name>
+      <name since="">subdir(Dir [, Options])</name>
       <fsummary>Descend recursively down the directory <c>Dir</c>and create a <c>TAGS</c>file based on all files found.</fsummary>
       <desc>
         <p>Descend recursively down the directory <c>Dir</c> and
@@ -81,7 +81,7 @@
       </desc>
     </func>
     <func>
-      <name>subdirs(DirList [, Options])</name>
+      <name since="">subdirs(DirList [, Options])</name>
       <fsummary>Descend recursively down all the directories in<c>DirList</c>and create a <c>TAGS</c>file based on all files found.</fsummary>
       <desc>
         <p>Descend recursively down all the directories in
@@ -90,7 +90,7 @@
       </desc>
     </func>
     <func>
-      <name>root([Options])</name>
+      <name since="">root([Options])</name>
       <fsummary>Create a <c>TAGS</c>file covering all files in the Erlang distribution.</fsummary>
       <desc>
         <p>Create a <c>TAGS</c> file covering all files in
diff --git a/lib/tools/doc/src/xref.xml b/lib/tools/doc/src/xref.xml
index 6f833246ad..ab3641a52f 100644
--- a/lib/tools/doc/src/xref.xml
+++ b/lib/tools/doc/src/xref.xml
@@ -32,7 +32,7 @@
     <rev>PA1</rev>
     <file>xref.sgml</file>
   </header>
-  <module>xref</module>
+  <module since="">xref</module>
   <modulesummary>A Cross Reference Tool for analyzing dependencies between functions, modules, applications and releases.</modulesummary>
   <description>
     <p>Xref is a cross reference tool that can be used for finding
@@ -729,7 +729,7 @@ xref() = atom() | pid()  </pre>
   </description>
   <funcs>
     <func>
-      <name>add_application(Xref, Directory [, Options]) ->  {ok, application()} | Error</name>
+      <name since="">add_application(Xref, Directory [, Options]) ->  {ok, application()} | Error</name>
       <fsummary>Add the modules of an application.</fsummary>
       <type>
         <v>Directory = directory()</v>
@@ -761,7 +761,7 @@ xref() = atom() | pid()  </pre>
       </desc>
     </func>
     <func>
-      <name>add_directory(Xref, Directory [, Options]) ->  {ok, Modules} | Error</name>
+      <name since="">add_directory(Xref, Directory [, Options]) ->  {ok, Modules} | Error</name>
       <fsummary>Add the modules in a directory.</fsummary>
       <type>
         <v>Directory = directory()</v>
@@ -791,7 +791,7 @@ xref() = atom() | pid()  </pre>
       </desc>
     </func>
     <func>
-      <name>add_module(Xref, File [, Options]) -> {ok, module()} | Error</name>
+      <name since="">add_module(Xref, File [, Options]) -> {ok, module()} | Error</name>
       <fsummary>Add a module.</fsummary>
       <type>
         <v>Error = {error, module(), Reason}</v>
@@ -814,7 +814,7 @@ xref() = atom() | pid()  </pre>
       </desc>
     </func>
     <func>
-      <name>add_release(Xref, Directory [, Options]) ->  {ok, release()} | Error</name>
+      <name since="">add_release(Xref, Directory [, Options]) ->  {ok, release()} | Error</name>
       <fsummary>Add the modules of a release.</fsummary>
       <type>
         <v>Directory = directory()</v>
@@ -849,7 +849,7 @@ xref() = atom() | pid()  </pre>
       </desc>
     </func>
     <func>
-      <name>analyze(Xref, Analysis [, Options]) ->  {ok, Answer} | Error</name>
+      <name since="">analyze(Xref, Analysis [, Options]) ->  {ok, Answer} | Error</name>
       <fsummary>Evaluate a predefined analysis.</fsummary>
       <type>
         <v>Analysis = undefined_function_calls  | undefined_functions | locals_not_used | exports_not_used | deprecated_function_calls | {deprecated_function_calls, DeprFlag} | deprecated_functions | {deprecated_functions, DeprFlag} | {call, FuncSpec} | {use, FuncSpec} | {module_call, ModSpec} | {module_use, ModSpec} | {application_call, AppSpec} | {application_use, AppSpec} | {release_call, RelSpec} | {release_use, RelSpec}</v>
@@ -939,7 +939,7 @@ Evaluates a predefined analysis.
       </desc>
     </func>
     <func>
-      <name>d(Directory) -> [DebugInfoResult] | [NoDebugInfoResult] | Error</name>
+      <name since="">d(Directory) -> [DebugInfoResult] | [NoDebugInfoResult] | Error</name>
       <fsummary>Check the modules in a directory using the code path.</fsummary>
       <type>
         <v>Directory = directory()</v>
@@ -979,8 +979,8 @@ Evaluates a predefined analysis.
       </desc>
     </func>
     <func>
-      <name>forget(Xref) -> ok</name>
-      <name>forget(Xref, Variables) -> ok | Error</name>
+      <name since="">forget(Xref) -> ok</name>
+      <name since="">forget(Xref, Variables) -> ok | Error</name>
       <fsummary>Remove user variables and their values.</fsummary>
       <type>
         <v>Error = {error, module(), Reason}</v>
@@ -994,7 +994,7 @@ Evaluates a predefined analysis.
       </desc>
     </func>
     <func>
-      <name>format_error(Error) -> Chars</name>
+      <name since="">format_error(Error) -> Chars</name>
       <fsummary>Return an English description of an Xref error reply.</fsummary>
       <type>
         <v>Error = {error, module(), term()}</v>
@@ -1008,8 +1008,8 @@ Evaluates a predefined analysis.
       </desc>
     </func>
     <func>
-      <name>get_default(Xref) -> [{Option, Value}]</name>
-      <name>get_default(Xref, Option) -> {ok, Value} | Error</name>
+      <name since="">get_default(Xref) -> [{Option, Value}]</name>
+      <name since="">get_default(Xref, Option) -> {ok, Value} | Error</name>
       <fsummary>Return the default values of options.</fsummary>
       <type>
         <v>Error = {error, module(), Reason}</v>
@@ -1023,7 +1023,7 @@ Evaluates a predefined analysis.
       </desc>
     </func>
     <func>
-      <name>get_library_path(Xref) -> {ok, LibraryPath}</name>
+      <name since="">get_library_path(Xref) -> {ok, LibraryPath}</name>
       <fsummary>Return the library path.</fsummary>
       <type>
         <v>LibraryPath = library_path()</v>
@@ -1034,9 +1034,9 @@ Evaluates a predefined analysis.
       </desc>
     </func>
     <func>
-      <name>info(Xref) -> [Info]</name>
-      <name>info(Xref, Category) -> [{Item, [Info]}]</name>
-      <name>info(Xref, Category, Items) ->  [{Item, [Info]}]</name>
+      <name since="">info(Xref) -> [Info]</name>
+      <name since="">info(Xref, Category) -> [{Item, [Info]}]</name>
+      <name since="">info(Xref, Category, Items) ->  [{Item, [Info]}]</name>
       <fsummary>Return information about an Xref server.</fsummary>
       <type>
         <v>Application = [] | [application()]</v>
@@ -1220,8 +1220,8 @@ Evaluates a predefined analysis.
       </desc>
     </func>
     <func>
-      <name>m(Module) -> [DebugInfoResult] | [NoDebugInfoResult] | Error</name>
-      <name>m(File) -> [DebugInfoResult] | [NoDebugInfoResult] | Error</name>
+      <name since="">m(Module) -> [DebugInfoResult] | [NoDebugInfoResult] | Error</name>
+      <name since="">m(File) -> [DebugInfoResult] | [NoDebugInfoResult] | Error</name>
       <fsummary>Check a module using the code path.</fsummary>
       <type>
         <v>DebugInfoResult = {deprecated, [funcall()]} | {undefined, [funcall()]} | {unused, [mfa()]}</v>
@@ -1263,7 +1263,7 @@ Evaluates a predefined analysis.
       </desc>
     </func>
     <func>
-      <name>q(Xref, Query [, Options]) -> {ok, Answer} | Error</name>
+      <name since="">q(Xref, Query [, Options]) -> {ok, Answer} | Error</name>
       <fsummary>Evaluate a query.</fsummary>
       <type>
         <v>Answer = false | [constant()] | [Call] | [Component] | int() | [DefineAt] | [CallAt] | [AllLines]</v>
@@ -1322,7 +1322,7 @@ Evaluates a predefined analysis.
       </desc>
     </func>
     <func>
-      <name>remove_application(Xref, Applications) -> ok | Error</name>
+      <name since="">remove_application(Xref, Applications) -> ok | Error</name>
       <fsummary>Remove applications and their modules.</fsummary>
       <type>
         <v>Applications = application() | [application()]</v>
@@ -1335,7 +1335,7 @@ Evaluates a predefined analysis.
       </desc>
     </func>
     <func>
-      <name>remove_module(Xref, Modules) -> ok | Error</name>
+      <name since="">remove_module(Xref, Modules) -> ok | Error</name>
       <fsummary>Remove analyzed modules.</fsummary>
       <type>
         <v>Error = {error, module(), Reason}</v>
@@ -1348,7 +1348,7 @@ Evaluates a predefined analysis.
       </desc>
     </func>
     <func>
-      <name>remove_release(Xref, Releases) -> ok | Error</name>
+      <name since="">remove_release(Xref, Releases) -> ok | Error</name>
       <fsummary>Remove releases and their applications and modules.</fsummary>
       <type>
         <v>Error = {error, module(), Reason}</v>
@@ -1363,7 +1363,7 @@ Evaluates a predefined analysis.
       </desc>
     </func>
     <func>
-      <name>replace_application(Xref, Application,  Directory [, Options]) -> {ok, application()} | Error</name>
+      <name since="">replace_application(Xref, Application,  Directory [, Options]) -> {ok, application()} | Error</name>
       <fsummary>Replace an application's modules.</fsummary>
       <type>
         <v>Application = application()</v>
@@ -1384,7 +1384,7 @@ Evaluates a predefined analysis.
       </desc>
     </func>
     <func>
-      <name>replace_module(Xref, Module, File [, Options]) ->  {ok, module()} | Error</name>
+      <name since="">replace_module(Xref, Module, File [, Options]) ->  {ok, module()} | Error</name>
       <fsummary>Replace an analyzed module.</fsummary>
       <type>
         <v>Error = {error, module(), Reason}</v>
@@ -1409,8 +1409,8 @@ Evaluates a predefined analysis.
       </desc>
     </func>
     <func>
-      <name>set_default(Xref, Option, Value) -> {ok, OldValue} | Error</name>
-      <name>set_default(Xref, OptionValues) -> ok | Error</name>
+      <name since="">set_default(Xref, Option, Value) -> {ok, OldValue} | Error</name>
+      <name since="">set_default(Xref, OptionValues) -> ok | Error</name>
       <fsummary>Set the default values of options.</fsummary>
       <type>
         <v>Error = {error, module(), Reason}</v>
@@ -1435,7 +1435,7 @@ Evaluates a predefined analysis.
       </desc>
     </func>
     <func>
-      <name>set_library_path(Xref, LibraryPath [, Options]) ->  ok | Error</name>
+      <name since="">set_library_path(Xref, LibraryPath [, Options]) ->  ok | Error</name>
       <fsummary>Set the library path and finds the library modules.</fsummary>
       <type>
         <v>Error = {error, module(), Reason}</v>
@@ -1469,7 +1469,7 @@ Evaluates a predefined analysis.
       </desc>
     </func>
     <func>
-      <name>start(NameOrOptions) -> Return</name>
+      <name since="">start(NameOrOptions) -> Return</name>
       <fsummary>Create an Xref server.</fsummary>
       <type>
         <v>NameOrOptions = Name | Options</v>
@@ -1487,7 +1487,7 @@ Evaluates a predefined analysis.
       </desc>
     </func>
     <func>
-      <name>start(Name, Options) -> Return</name>
+      <name since="">start(Name, Options) -> Return</name>
       <fsummary>Create an Xref server.</fsummary>
       <type>
         <v>Name = atom()</v>
@@ -1504,7 +1504,7 @@ Evaluates a predefined analysis.
       </desc>
     </func>
     <func>
-      <name>stop(Xref)</name>
+      <name since="">stop(Xref)</name>
       <fsummary>Delete an Xref server.</fsummary>
       <type>
         <v>Xref = xref()</v>
@@ -1514,7 +1514,7 @@ Evaluates a predefined analysis.
       </desc>
     </func>
     <func>
-      <name>update(Xref [, Options]) -> {ok, Modules} | Error</name>
+      <name since="">update(Xref [, Options]) -> {ok, Modules} | Error</name>
       <fsummary>Replace newly compiled analyzed modules.</fsummary>
       <type>
         <v>Error = {error, module(), Reason}</v>
@@ -1534,7 +1534,7 @@ Evaluates a predefined analysis.
       </desc>
     </func>
     <func>
-      <name>variables(Xref [, Options]) -> {ok, [VariableInfo]}</name>
+      <name since="">variables(Xref [, Options]) -> {ok, [VariableInfo]}</name>
       <fsummary>Return the names of variables.</fsummary>
       <type>
         <v>Options = [Option] | Option</v>
diff --git a/lib/tools/emacs/erlang-test.el b/lib/tools/emacs/erlang-test.el
index 2ee584d11a..fbdd298da3 100644
--- a/lib/tools/emacs/erlang-test.el
+++ b/lib/tools/emacs/erlang-test.el
@@ -50,8 +50,15 @@
 ;; The -L option adds a directory to the load-path.  It should be the
 ;; directory containing erlang.el and erlang-test.el.
 ;;
-;; 3. Call the script test-erlang-mode in this directory.  This script
-;; use the second method.
+;; 3. Run the emacs_SUITE.  The testcases tests_interpreted/1 and
+;; tests_compiled/1 in this suite are using the second method.  One
+;; way to run this suite is with the ct_run tool, for example like the
+;; following when standing at the OTP repo top directory:
+;;
+;; ct_run -suite lib/tools/test/emacs_SUITE
+;;
+;; Note that this creates a lot of html log files in the current
+;; directory.
 
 ;;; Code:
 
diff --git a/lib/tools/emacs/erlang.el b/lib/tools/emacs/erlang.el
index 3cbe9daa60..0b3a2319e2 100644
--- a/lib/tools/emacs/erlang.el
+++ b/lib/tools/emacs/erlang.el
@@ -4,7 +4,7 @@
 ;; Author:   Anders Lindgren
 ;; Keywords: erlang, languages, processes
 ;; Date:     2011-12-11
-;; Version:  2.8.1
+;; Version:  2.8.2
 ;; Package-Requires: ((emacs "24.1"))
 
 ;; %CopyrightBegin%
@@ -87,7 +87,7 @@
   "The Erlang programming language."
   :group 'languages)
 
-(defconst erlang-version "2.8.1"
+(defconst erlang-version "2.8.2"
   "The version number of Erlang mode.")
 
 (defcustom erlang-root-dir nil
@@ -502,6 +502,13 @@ regardless of where in the line point is when the TAB command is used."
   :type 'boolean
   :safe 'booleanp)
 
+(defcustom erlang-max-files-to-visit-for-refining-xrefs 32
+  "Upper limit how many files to visit for checking arity.
+When `nil' there is no limit."
+  :group 'erlang
+  :type '(restricted-sexp :match-alternatives (integerp 'nil))
+  :safe (lambda (val) (or (eq val nil) (integerp val))))
+
 (defvar erlang-man-inhibit (eq system-type 'windows-nt)
   "Inhibit the creation of the Erlang Manual Pages menu.
 
@@ -905,8 +912,10 @@ resulting regexp is surrounded by \\_< and \\_>."
       "dist_get_stat"
       "dist_ctrl_get_data"
       "dist_ctrl_get_data_notification"
+      "dist_ctrl_get_opt"
       "dist_ctrl_input_handler"
       "dist_ctrl_put_data"
+      "dist_ctrl_set_opt"
       "dmonitor_node"
       "dt_append_vm_tag_data"
       "dt_get_tag"
@@ -3687,10 +3696,13 @@ When an identifier is found return a list with 4 elements:
 module or nil.
 
 2. Module - Module name string or nil.  In case of a
-qualified-function a search fails if no entries with correct
-module are found.  For other kinds the module is just a
-preference.  If no matching entries are found the search will be
-retried without regard to module.
+qualified-function the module is explicitly specified (like
+module:fun()) and the search fails if no entries with correct
+module are found.  For other kinds the module is guessed: either
+fetched from import statements or it is assumed to be the local
+module.  In these cases the module is just a preference.  If no
+matching entries are found the search will be retried without
+regard to module.
 
 3. Name - String name of function, module, record or macro.
 
@@ -3702,18 +3714,22 @@ of arguments could be found, otherwise nil."
         (if (eq (char-syntax (following-char)) ? )
             (skip-chars-backward " \t"))
         (skip-chars-backward "[:word:]_:'")
-        (cond ((looking-at erlang-module-function-regexp)
+        (cond ((and (eq (preceding-char) ??)
+                    (looking-at (concat "\\(MODULE\\):" erlang-atom-regexp)))
+               (erlang-get-qualified-function-id-at-point (erlang-get-module)))
+              ((looking-at erlang-module-function-regexp)
                (erlang-get-qualified-function-id-at-point))
               ((looking-at (concat erlang-atom-regexp ":"))
                (erlang-get-module-id-at-point))
               ((looking-at erlang-name-regexp)
                (erlang-get-some-other-id-at-point)))))))
 
-(defun erlang-get-qualified-function-id-at-point ()
+(defun erlang-get-qualified-function-id-at-point (&optional module)
   (let ((kind 'qualified-function)
-        (module (erlang-remove-quotes
-                 (buffer-substring-no-properties
-                  (match-beginning 1) (match-end 1))))
+        (module (or module
+                    (erlang-remove-quotes
+                     (buffer-substring-no-properties
+                      (match-beginning 1) (match-end 1)))))
         (name (erlang-remove-quotes
                (buffer-substring-no-properties
                 (match-beginning (1+ erlang-atom-regexp-matches))
@@ -3823,7 +3839,8 @@ of arguments could be found, otherwise nil."
   (let ((case-fold-search nil)) ; force string matching to be case sensitive
     (if (and (stringp str)
              (not (string-match (eval-when-compile
-                                  (concat "\\`" erlang-atom-regexp "\\'")) str)))
+                                  (concat "\\`" erlang-atom-regexp "\\'"))
+                                str)))
         (progn
           (setq str (replace-regexp-in-string "'" "\\'" str t t ))
           (concat "'" str "'"))
@@ -4877,15 +4894,36 @@ about Erlang modules."
 ;; The backend below is a wrapper around the built-in etags backend.
 ;; It adds awareness of the module:tag syntax in a similar way that is
 ;; done above for the old etags commands.
+;;
+;; In addition arity is also considered when jumping to definitions.
+;; There is however currently no information about arity in the TAGS
+;; file.  Also two functions with the same name but different arity
+;; _sometimes_ get one TAGS entry each and sometimes are joined in one
+;; single entry.  If they are directly consecutive they will be
+;; joined.  If there are other functions etc in between then they will
+;; get one entry each.
+;;
+;; These limitations are present in both the etags program shipped
+;; with GNU Emacs and the tags.erl program in this repository.
+;;
+;; Therefore erlang.el must complement the information in TAGS by
+;; visiting files and checking arity.  When searching for popular
+;; function names (like init, handle_call etc) in a big TAGS file
+;; (like one indexing this repository) this may be quite
+;; time-consuming.  There exists therefore an upper limit for the
+;; number of files to visit (called
+;; `erlang-max-files-to-visit-for-refining-xrefs').
+;;
+;; As mentioned this xref implementation is based on the etags xref
+;; implementation.  But in the cases where arity is considered the
+;; etags information structures (class xref-etags-location) will be
+;; translated to our own structures which include arity (class
+;; erlang-xref-location).  This translation is started in the function
+;; `erlang-refine-xrefs'.
 
-(defvar erlang-current-arity nil
-  "The arity of the function currently being searched.
-
-There is no information about arity in the TAGS file.
-Consecutive functions with same name but different arity will
-only get one entry in the TAGS file.  Matching TAGS entries are
-therefore selected without regarding arity.  The arity is
-considered first when it is time to jump to the definition.")
+;; I mention this as a head up that some of the functions below deal
+;; with xref items with xref-etags-location and some deal with xref
+;; items with erlang-xref-location.
 
 (defun erlang-etags--xref-backend () 'erlang-etags)
 
@@ -4893,127 +4931,80 @@ considered first when it is time to jump to the definition.")
   (when (locate-library (symbol-name feature))
     (require feature)))
 
-(and (erlang-soft-require 'xref)
-     (erlang-soft-require 'cl-generic)
-     (erlang-soft-require 'eieio)
-     (erlang-soft-require 'etags)
-     ;; The purpose of using eval here is to avoid compilation
-     ;; warnings in emacsen without cl-defmethod etc.
-     (eval
-      '(progn
-         (cl-defmethod xref-backend-identifier-at-point
-             ((_backend (eql erlang-etags)))
-           (if (eq this-command 'xref-find-references)
-               (if (use-region-p)
-                   (buffer-substring-no-properties (region-beginning)
-                                                   (region-end))
-                 (thing-at-point 'symbol))
-             (erlang-id-to-string (erlang-get-identifier-at-point))))
-
-         (cl-defmethod xref-backend-definitions
-             ((_backend (eql erlang-etags)) identifier)
-           (erlang-xref-find-definitions identifier))
-
-         (cl-defmethod xref-backend-apropos
-             ((_backend (eql erlang-etags)) identifier)
-           (erlang-xref-find-definitions identifier t))
-
-         (cl-defmethod xref-backend-identifier-completion-table
-             ((_backend (eql erlang-etags)))
-           (let ((erlang-replace-etags-tags-completion-table t))
-             (tags-completion-table)))
-
-         (defclass erlang-xref-location (xref-etags-location) ())
-
-         (defun erlang-convert-xrefs (xrefs)
-           (mapcar (lambda (xref)
-                     (oset xref location (erlang-make-location
-                                          (oref xref location)))
-                     xref)
-                   xrefs))
-
-         (defun erlang-make-location (etags-location)
-           (with-slots (tag-info file) etags-location
-             (make-instance 'erlang-xref-location :tag-info tag-info
-                            :file file)))
-
-         (cl-defmethod xref-location-marker ((locus erlang-xref-location))
-           (with-slots (tag-info file) locus
-             (with-current-buffer (find-file-noselect file)
-               (save-excursion
-                 (or (erlang-goto-tag-location-by-arity tag-info)
-                     (etags-goto-tag-location tag-info))
-                 ;; Reset erlang-current-arity.  We want to jump to
-                 ;; correct arity in the first attempt.  That is now
-                 ;; done.  Possible remaining jumps will be from
-                 ;; entries in the *xref* buffer and then we want to
-                 ;; ignore the arity.  (Alternatively we could remove
-                 ;; all but one xref entry per file when we know the
-                 ;; arity).
-                 (setq erlang-current-arity nil)
-                 (point-marker)))))
-
-         (defun erlang-xref-context (xref)
-           (with-slots (tag-info) (xref-item-location xref)
-             (car tag-info))))))
-
-
-(defun erlang-goto-tag-location-by-arity (tag-info)
-  (when erlang-current-arity
-    (let* ((tag-text (car tag-info))
-           (tag-pos (cdr (cdr tag-info)))
-           (tag-line (car (cdr tag-info)))
-           (regexp (erlang-tag-info-regexp tag-text))
-           (startpos (or tag-pos
-                         (when tag-line
-                           (goto-char (point-min))
-                           (forward-line (1- tag-line))
-                           (point))
-                         (point-min))))
-      (setq startpos (max (- startpos 2000)
-                          (point-min)))
-      (goto-char startpos)
-      (let ((pos (or (erlang-search-by-arity regexp)
-                     (unless (eq startpos (point-min))
-                       (goto-char (point-min))
-                       (erlang-search-by-arity regexp)))))
-        (when pos
-          (goto-char pos)
-          t)))))
-
-(defun erlang-tag-info-regexp (tag-text)
-  (concat "^"
-          (regexp-quote tag-text)
-          ;; Erlang function entries in TAGS includes the opening
-          ;; parenthesis for the argument list.  Erlang macro entries
-          ;; do not.  Add it here in order to end up in correct
-          ;; position for erlang-get-arity.
-          (if (string-prefix-p "-define" tag-text)
-              "\\s-*("
-            "")))
-
-(defun erlang-search-by-arity (regexp)
-  (let (pos)
-    (while (and (null pos)
-                (re-search-forward regexp nil t))
-      (when (eq erlang-current-arity (save-excursion (erlang-get-arity)))
-        (setq pos (point-at-bol))))
-    pos))
-
-
+(when (and (erlang-soft-require 'xref)
+           (erlang-soft-require 'cl-generic)
+           (erlang-soft-require 'eieio)
+           (erlang-soft-require 'etags))
+  ;; The purpose of using eval here is to avoid compilation
+  ;; warnings in emacsen without cl-defmethod etc.
+  (eval
+   '(progn
+      (cl-defmethod xref-backend-identifier-at-point ((_backend
+                                                       (eql erlang-etags)))
+        (if (eq this-command 'xref-find-references)
+            (if (use-region-p)
+                (buffer-substring-no-properties (region-beginning)
+                                                (region-end))
+              (thing-at-point 'symbol))
+          (erlang-id-to-string (erlang-get-identifier-at-point))))
+
+      (cl-defmethod xref-backend-definitions ((_backend (eql erlang-etags))
+                                              identifier)
+        (erlang-xref-find-definitions identifier))
+
+      (cl-defmethod xref-backend-apropos ((_backend (eql erlang-etags))
+                                          identifier)
+        (erlang-xref-find-definitions identifier t))
+
+      (cl-defmethod xref-backend-identifier-completion-table
+        ((_backend (eql erlang-etags)))
+        (let ((erlang-replace-etags-tags-completion-table t))
+          (tags-completion-table)))
+
+      (defclass erlang-xref-location (xref-file-location)
+        ((arity :type fixnum :initarg :arity
+                :reader erlang-xref-location-arity))
+        :documentation "An erlang location is a file location plus arity.")
+
+      ;; This method definition only calls the superclass which is
+      ;; the default behaviour if it was not defined.  It is only
+      ;; needed for "upgrade" purposes.  In version 2.8.1 of
+      ;; erlang.el this method was defined differently and in case
+      ;; user switch to a new erlang.el without restarting Emacs
+      ;; this method needs to be redefined.
+      (cl-defmethod xref-location-marker ((locus erlang-xref-location))
+        (cl-call-next-method locus)))))
+
+;; If this function returns a single xref the user will jump to that
+;; directly.  If two or more xrefs are returned a *xref* window is
+;; displayed and the user can choose where to jump.  Hence we want to
+;; return a single xref when we are pretty sure that is where the user
+;; wants to go.  Otherwise return all possible xrefs but sort them so
+;; that xrefs in the local file is first and if arity is known sort
+;; the xrefs with matching arity before others.
+
+;; Note that the arity sorting work may partly be undone later when
+;; the hits are presented in the *xref* buffer since they then will be
+;; grouped together by file.  Ie when one file have one hit with
+;; correct arity and others with wrong arity these hits will be
+;; grouped together and may end up before hits with correct arity.
 (defun erlang-xref-find-definitions (identifier &optional is-regexp)
   (erlang-with-id (kind module name arity) identifier
-    (setq erlang-current-arity arity)
     (cond ((eq kind 'module)
            (erlang-xref-find-definitions-module name))
+          ((eq kind 'qualified-function)
+           (erlang-xref-find-definitions-qualified-function module
+                                                            name
+                                                            arity
+                                                            is-regexp))
           (module
-           (erlang-xref-find-definitions-module-tag module
+           (erlang-xref-find-definitions-module-tag kind
+                                                    module
                                                     name
-                                                    (eq kind
-                                                        'qualified-function)
+                                                    arity
                                                     is-regexp))
           (t
-           (erlang-xref-find-definitions-tag kind name is-regexp)))))
+           (erlang-xref-find-definitions-tag kind name arity is-regexp)))))
 
 (defun erlang-xref-find-definitions-module (module)
   (and (fboundp 'xref-make)
@@ -5038,65 +5029,252 @@ considered first when it is time to jump to the definition.")
                  (setq files (cdr files))))))
          (nreverse xrefs))))
 
-(defun erlang-visit-tags-table-buffer (cont cbuf)
-  (if (< emacs-major-version 26)
-      (visit-tags-table-buffer cont)
-    ;; Remove this with-no-warnings when Emacs 26 is the required
-    ;; version minimum.
-    (with-no-warnings
-      (visit-tags-table-buffer cont cbuf))))
-
-(defun erlang-xref-find-definitions-module-tag (module
+(defun erlang-xref-find-definitions-qualified-function (module
+                                                        tag
+                                                        arity
+                                                        is-regexp)
+  "Find definitions of TAG in MODULE preferably with arity ARITY.
+If one single perfect match was found return only that (ignoring
+other definitions matching TAG).  If IS-REGEXP is non-nil then
+TAG is a regexp."
+  (let* ((xrefs (when (fboundp 'etags--xref-find-definitions)
+                  (etags--xref-find-definitions tag is-regexp)))
+         (xrefs-split (erlang-split-xrefs-on-module xrefs module))
+         (module-xrefs (car xrefs-split))
+         (module-xrefs (erlang-refine-xrefs module-xrefs
+                                            'qualified-function
+                                            tag
+                                            is-regexp)))
+    (or (erlang-single-arity-match module-xrefs arity)
+        (erlang-sort-by-arity module-xrefs arity))))
+
+
+;; We will end up here when erlang-get-some-other-id-at-point either
+;; found module among the import statements or module is just the
+;; current local file.
+(defun erlang-xref-find-definitions-module-tag (kind
+                                                module
                                                 tag
-                                                is-qualified
+                                                arity
                                                 is-regexp)
-  "Find definitions of TAG and filter away definitions outside of
-MODULE.  If IS-QUALIFIED is nil and no definitions was found inside
-the MODULE then return any definitions found outside.  If
-IS-REGEXP is non-nil then TAG is a regexp."
-  (and (fboundp 'etags--xref-find-definitions)
-       (fboundp 'erlang-convert-xrefs)
-       (let ((xrefs (erlang-convert-xrefs
-                     (etags--xref-find-definitions tag is-regexp)))
-             xrefs-in-module)
-         (dolist (xref xrefs)
-           (when (string-equal module (erlang-xref-module xref))
-             (push xref xrefs-in-module)))
-         (cond (is-qualified xrefs-in-module)
-               (xrefs-in-module xrefs-in-module)
-               (t xrefs)))))
-
-(defun erlang-xref-find-definitions-tag (kind tag is-regexp)
-  "Find all definitions of TAG and reorder them so that
-definitions in the currently visited file comes first."
-  (and (fboundp 'etags--xref-find-definitions)
-       (fboundp 'erlang-convert-xrefs)
-       (let* ((current-file (and (buffer-file-name)
-                                 (file-truename (buffer-file-name))))
-              (regexp (erlang-etags-regexp kind tag is-regexp))
-              (xrefs (erlang-convert-xrefs
-                      (etags--xref-find-definitions regexp t)))
-              local-xrefs non-local-xrefs)
-         (while xrefs
-           (let ((xref (car xrefs)))
-             (if (string-equal (erlang-xref-truename-file xref)
-                               current-file)
-                 (push xref local-xrefs)
-               (push xref non-local-xrefs))
-             (setq xrefs (cdr xrefs))))
-         (append (reverse local-xrefs)
-                 (reverse non-local-xrefs)))))
+  "Find definitions of TAG preferably in MODULE and with arity ARITY.
+Return definitions outside MODULE if none are found inside.  If
+IS-REGEXP is non-nil then TAG is a regexp.
+
+If one single perfect match was found return only that (ignoring
+other definitions matching TAG)."
+  (let* ((xrefs (when (fboundp 'etags--xref-find-definitions)
+                  (etags--xref-find-definitions tag is-regexp)))
+         (xrefs-split (erlang-split-xrefs-on-module xrefs module))
+         (module-xrefs (car xrefs-split))
+         (module-xrefs (erlang-refine-xrefs module-xrefs
+                                            kind
+                                            tag
+                                            is-regexp)))
+    (or (erlang-single-arity-match module-xrefs arity)
+        (erlang-xref-find-definitions-tag kind tag arity is-regexp xrefs))))
+
+(defun erlang-xref-find-definitions-tag (kind
+                                         tag
+                                         arity
+                                         is-regexp
+                                         &optional xrefs)
+  "Find definitions of TAG preferably in local file and with arity ARITY.
+If one single perfect match was found return only that (ignoring
+other definitions matching TAG).  If no such local match was
+found then look for a matching BIF in the same way.  If IS-REGEXP
+is non-nil then TAG is a regexp."
+  (let* ((regexp (erlang-etags-regexp kind tag is-regexp))
+         (xrefs (or xrefs
+                    (when (fboundp 'etags--xref-find-definitions)
+                      (etags--xref-find-definitions regexp t))))
+         (xrefs-split (erlang-split-xrefs xrefs))
+         (local-xrefs (car xrefs-split))
+         (local-xrefs (erlang-refine-xrefs local-xrefs
+                                           kind
+                                           tag
+                                           is-regexp))
+         (bif-xrefs (cadr xrefs-split))
+         (other-xrefs (caddr xrefs-split)))
+    (or (erlang-single-arity-match local-xrefs arity)
+        ;; No local match, look for a matching BIF.
+        (progn
+          (setq bif-xrefs (erlang-refine-xrefs bif-xrefs
+                                               kind
+                                               tag
+                                               is-regexp))
+          (erlang-single-arity-match bif-xrefs arity))
+        (progn
+          (setq other-xrefs (erlang-refine-xrefs other-xrefs
+                                                 kind
+                                                 tag
+                                                 is-regexp))
+          (and (null local-xrefs)
+               (null bif-xrefs)
+               ;; No local of BIF matches at all.  Is there a single
+               ;; arity match among the rest?
+               (erlang-single-arity-match other-xrefs arity)))
+        (append (erlang-sort-by-arity local-xrefs arity)
+                (erlang-sort-by-arity bif-xrefs arity)
+                (erlang-sort-by-arity other-xrefs arity)))))
+
+
+(defun erlang-refine-xrefs (xrefs kind tag is-regexp)
+  (if (or (memq kind '(record module))
+          ;; No support for apropos here.
+          is-regexp
+          (erlang-too-many-files-in-xrefs xrefs))
+      xrefs
+    (when (and xrefs
+               (fboundp 'xref-item-location)
+               (fboundp 'xref-location-group)
+               (fboundp 'slot-value))
+      (let (files)
+        (cl-loop for xref in xrefs
+                 for loc = (xref-item-location xref)
+                 for file = (xref-location-group loc)
+                 do (pushnew file files :test 'string-equal))
+        (or (cl-loop for file in files
+                     append (erlang-xrefs-in-file file kind tag is-regexp))
+            ;; Failed for some reason.  Pretend like it is raining and
+            ;; return the unrefined xrefs.
+            xrefs)))))
+
+(defun erlang-too-many-files-in-xrefs (xrefs)
+  (and erlang-max-files-to-visit-for-refining-xrefs
+       (let ((files-to-visit (delete-dups
+                              (mapcar #'erlang-xref-truename-file
+                                      xrefs))))
+         (if (< (length files-to-visit)
+                erlang-max-files-to-visit-for-refining-xrefs)
+             nil
+           (message (concat "Too many hits to consider arity (see "
+                            "`erlang-max-files-to-visit-for-refining-xrefs')"))
+           t))))
+
+(defun erlang-xrefs-in-file (file kind tag is-regexp)
+  (when (fboundp 'make-instance)
+    (with-current-buffer (find-file-noselect file)
+      (save-excursion
+        (goto-char (point-min))
+        (let ((regexp (concat ; "^"
+                              (erlang-etags-regexp kind tag is-regexp)
+                              "\\s *("))
+              last-arity)
+          (cl-loop while (re-search-forward regexp nil t)
+                   for name = (match-string-no-properties 1)
+                   for arity = (save-excursion
+                                 (erlang-get-arity))
+                   for loc = (make-instance 'erlang-xref-location
+                                            :file file
+                                            :line (line-number-at-pos)
+                                            :column 0
+                                            :arity arity)
+                   for sum = (erlang-xref-summary kind name arity)
+                   when (and arity
+                             (not (eq arity last-arity)))
+                   collect (make-instance 'xref-item
+                                          :summary sum
+                                          :location loc)
+                   do (setq last-arity arity)))))))
+
+(defun erlang-xref-summary (kind tag arity)
+  (format "%s%s%s"
+          (if (memq kind '(record macro module))
+              (format "%s " kind)
+            "")
+          tag
+          (if arity (format "/%s" arity) "")))
+
+(defun erlang-single-arity-match (xrefs wanted-arity)
+  "Attempt to find one perfect match.
+
+If we have all information needed to consider arity then return a
+single perfect match or nothing.  If there are more than one
+match nothing is returned.
+
+If we don't have all information needed to consider arity just
+return XREFS as is."
+  (if (erlang-should-consider-arity-p xrefs wanted-arity)
+      (let ((nr-matches 0)
+            match)
+        (while (and xrefs
+                    (< nr-matches 2))
+          (let* ((xref (car xrefs))
+                 (arity (erlang-xref-arity xref)))
+            (when (eq arity wanted-arity)
+              (setq match xref
+                    nr-matches (1+ nr-matches)))
+            (setq xrefs (cdr xrefs))))
+        (when (eq nr-matches 1)
+          (list match)))
+    (when (eq (length xrefs) 1)
+      xrefs)))
+
+(defun erlang-sort-by-arity (xrefs wanted-arity)
+  (if (erlang-should-consider-arity-p xrefs wanted-arity)
+      (let (matches non-matches)
+        (while xrefs
+          (let* ((xref (car xrefs))
+                 (arity (erlang-xref-arity xref)))
+            (push xref (if (eq arity wanted-arity)
+                           matches
+                         non-matches))
+            (setq xrefs (cdr xrefs))))
+        (append (reverse matches) (reverse non-matches) xrefs))
+    xrefs))
+
+(defun erlang-should-consider-arity-p (xrefs wanted-arity)
+  (and wanted-arity
+       xrefs
+       (fboundp 'erlang-xref-location-p)
+       (fboundp 'xref-item-location)
+       (erlang-xref-location-p (xref-item-location (car xrefs)))))
 
 (defun erlang-etags-regexp (kind tag is-regexp)
-  (let ((tag-regexp (if is-regexp
-                        tag
-                      (regexp-quote tag))))
-    (cond ((eq kind 'record)
-           (concat "-record\\s-*(\\s-*" tag-regexp))
-          ((eq kind 'macro)
-           (concat "-define\\s-*(\\s-*" tag-regexp))
-          (t tag-regexp))))
-
+  (let ((tag-regexp (concat "\\("
+                            (if is-regexp
+                                tag
+                              (regexp-quote tag))
+                            "\\)")))
+    (concat (if is-regexp "" "^")
+            (cond ((eq kind 'record)
+                   (concat "-record\\s-*(\\s-*" tag-regexp))
+                  ((eq kind 'macro)
+                   (concat "-define\\s-*(\\s-*" tag-regexp))
+                  (t
+                   tag-regexp))
+            (if is-regexp "" "\\_>"))))
+
+(defun erlang-xref-arity (xref)
+  (and (fboundp 'erlang-xref-location-arity)
+       (fboundp 'xref-item-location)
+       (erlang-xref-location-arity (xref-item-location xref))))
+
+(defun erlang-split-xrefs-on-module (xrefs module)
+  (let (local-xrefs non-local-xrefs)
+    (dolist (xref xrefs)
+      (if (string-equal (erlang-xref-module xref)
+                        module)
+          (push xref local-xrefs)
+        (push xref non-local-xrefs)))
+    (cons (reverse local-xrefs)
+          (reverse non-local-xrefs))))
+
+(defun erlang-split-xrefs (xrefs)
+  (let ((current-file (and (buffer-file-name)
+                           (file-truename (buffer-file-name))))
+        local-xrefs bif-xrefs other-xrefs)
+    (dolist (xref xrefs)
+      (cond ((string-equal (erlang-xref-truename-file xref) current-file)
+             (push xref local-xrefs))
+            ((string-equal (erlang-xref-module xref) "erlang")
+             (push xref bif-xrefs))
+            (t
+             (push xref other-xrefs))))
+    (list (reverse local-xrefs)
+          (reverse bif-xrefs)
+          (reverse other-xrefs))))
 
 (defun erlang-xref-module (xref)
   (erlang-get-module-from-file-name (erlang-xref-file xref)))
@@ -5111,7 +5289,13 @@ definitions in the currently visited file comes first."
        (fboundp 'xref-item-location)
        (xref-location-group (xref-item-location xref))))
 
-
+(defun erlang-visit-tags-table-buffer (cont cbuf)
+  (if (< emacs-major-version 26)
+      (visit-tags-table-buffer cont)
+    ;; Remove this with-no-warnings when Emacs 26 is the required
+    ;; version minimum.
+    (with-no-warnings
+      (visit-tags-table-buffer cont cbuf))))
 
 ;;;
 ;;; Prepare for other methods to run an Erlang slave process.
diff --git a/lib/tools/emacs/erldoc.el b/lib/tools/emacs/erldoc.el
index 770ab299ee..bc16d7a14d 100644
--- a/lib/tools/emacs/erldoc.el
+++ b/lib/tools/emacs/erldoc.el
@@ -89,6 +89,13 @@ up the indexing."
   :type 'file
   :group 'erldoc)
 
+(defcustom erldoc-no-signature-function #'ignore
+  "Notification function called if no function signature was found."
+  :type '(choice (function-item :tag "Ignore" ignore)
+                 (function-item :tag "Warn" warn)
+                 (function-item :tag "Error" error))
+  :group 'erldoc)
+
 (defun erldoc-strip-string (s)
   (let* ((re "[ \t\n\r\f\v\u00a0]+")
          (from (if (string-match (concat "\\`" re) s) (match-end 0) 0))
@@ -212,11 +219,21 @@ up the indexing."
          ;; Get the full function signature.
          (when (and (eq (car-safe d) 'a)
                     (gethash (erldoc-dom-get-attribute d 'name) table))
-           (push (append (gethash (erldoc-dom-get-attribute d 'name) table)
-                         (list (funcall span-content
-                                        (or (erldoc-dom-get-element d 'span)
-                                            (cadr (memq d erldoc-dom-walk-siblings))))))
-                 entries))
+           (let* ((name (erldoc-dom-get-attribute d 'name))
+                  (mfa-url (gethash name table))
+                  (mfa (car mfa-url))
+                  (sig (or (funcall span-content d)
+                           (funcall span-content
+                                    (or (erldoc-dom-get-element d 'span)
+                                        (cadr
+                                         (memq d erldoc-dom-walk-siblings))))
+                           (progn
+                             (funcall erldoc-no-signature-function
+                                      "erldoc-parse-man: no sig for %s"
+                                      mfa)
+                             nil))))
+             (push (append mfa-url (list sig))
+                   entries)))
          ;; Get data types
          (when (and (eq (car-safe d) 'a)
                     (string-prefix-p "type-"
@@ -280,7 +297,7 @@ up the indexing."
             (unless (file-exists-p of)
               (erldoc-parse-all erldoc-man-index of))
             (unless (string= erldoc-output-file of)
-              (make-symbolic-link of erldoc-output-file))))
+              (make-symbolic-link (expand-file-name of) erldoc-output-file))))
         (setq erldoc-lookup-table
               (with-temp-buffer
                 (insert-file-contents erldoc-output-file)
@@ -356,9 +373,12 @@ up the indexing."
           (sigs))
       (maphash (lambda (k v)
                  (when (string-match re k)
-                   (push (cons (string-to-number (match-string 1 k))
-                               (cdr (erldoc-tokenize-signature (cadr v))))
-                         sigs)))
+                   (if (cadr v)
+                       (push (cons (string-to-number (match-string 1 k))
+                                   (cdr (erldoc-tokenize-signature (cadr v))))
+                             sigs)
+                     (funcall erldoc-no-signature-function
+                              "erldoc-format-signature: No sig for %s" k))))
                (erldoc-lookup-table))
       (when sigs
         ;; Mostly single return type but there are exceptions such as
diff --git a/lib/tools/priv/styles.css b/lib/tools/priv/styles.css
index e10e94e3ad..84f00be9fd 100644
--- a/lib/tools/priv/styles.css
+++ b/lib/tools/priv/styles.css
@@ -53,21 +53,25 @@ table thead {
   display: none;
 }
 table td.line,
+table td.line a,
 table td.hits {
   width: 20px;
   background: #eaeaea;
   text-align: center;
+  text-decoration: none;
   font-size: 11px;
   padding: 0 10px;
   color: #949494;
 }
 table td.hits {
   width: 10px;
+  text-align: right;
   padding: 2px 5px;
   color: rgba(0, 0, 0, 0.6);
   background-color: #f0f0f0;
 }
 tr.miss td.line,
+tr.miss td.line a,
 tr.miss td.hits {
   background-color: #ffdce0;
   border-color: #fdaeb7;
@@ -76,6 +80,7 @@ tr.miss td {
   background-color: #ffeef0;
 }
 tr.hit td.line,
+tr.hit td.line a,
 tr.hit td.hits {
   background-color: #cdffd8;
   border-color: #bef5cb;
diff --git a/lib/tools/src/cover.erl b/lib/tools/src/cover.erl
index d7269e3f27..8fe866cb69 100644
--- a/lib/tools/src/cover.erl
+++ b/lib/tools/src/cover.erl
@@ -23,6 +23,7 @@
 %% This module implements the Erlang coverage tool.
 %% 
 %% ARCHITECTURE
+%%
 %% The coverage tool consists of one process on each node involved in
 %% coverage analysis. The process is registered as 'cover_server'
 %% (?SERVER).  The cover_server on the 'main' node is in charge, and
@@ -30,45 +31,62 @@
 %% 'DOWN' message for another cover_server, it marks the node as
 %% 'lost'. If a nodeup is received for a lost node the main node
 %% ensures that the cover compiled modules are loaded again. If the
-%% remote node was alive during the disconnected periode, cover data
-%% for this periode will also be included in the analysis.
+%% remote node was alive during the disconnected period, cover data
+%% for this period will also be included in the analysis.
 %%
 %% The cover_server process on the main node is implemented by the
 %% functions init_main/1 and main_process_loop/1. The cover_server on
 %% the remote nodes are implemented by the functions init_remote/2 and
 %% remote_process_loop/1.
 %%
+%% COUNTERS
+%%
+%% The 'counters' modules is used for counting how many time each line
+%% executed. Each cover-compiled module will have its own array of
+%% counters.
+%%
+%% The counter reference for module Module is stored in a persistent
+%% term with the key {cover,Module}.
+%%
+%% When the cover:local_only/0 function has been called, the reference
+%% for the counter array will be compiled into each cover-compiled
+%% module directly (instead of retrieving it from a persistent term).
+%% That will be faster, but the resulting code can be only be used on
+%% the main node.
+%%
 %% TABLES
-%% Each nodes has two tables: cover_internal_data_table (?COVER_TABLE) and.
-%% cover_internal_clause_table (?COVER_CLAUSE_TABLE). 
-%% ?COVER_TABLE contains the bump data i.e. the data about which lines
-%% have been executed how many times.
+%%
+%% Each node has two tables: ?COVER_MAPPING_TABLE and ?COVER_CLAUSE_TABLE.
+%% ?COVER_MAPPING_TABLE maps from a #bump{} record to an index in the
+%% counter array for the module. It is used both during instrumentation
+%% of cover-compiled modules and when collecting the counter values.
+%%
 %% ?COVER_CLAUSE_TABLE contains information about which clauses in which modules
 %% cover is currently collecting statistics.
-%% 
-%% The main node owns tables named
-%% 'cover_collected_remote_data_table' (?COLLECTION_TABLE) and
-%% 'cover_collected_remote_clause_table' (?COLLECTION_CLAUSE_TABLE). 
-%% These tables contain data which is collected from remote nodes (either when a
-%% remote node is stopped with cover:stop/1 or when analysing). When
-%% analysing, data is even moved from the COVER tables on the main
-%% node to the COLLECTION tables.
 %%
-%% The main node also has a table named 'cover_binary_code_table'
-%% (?BINARY_TABLE). This table contains the binary code for each cover
-%% compiled module. This is necessary so that the code can be loaded
-%% on remote nodes that are started after the compilation.
+%% The main node owns the tables ?COLLECTION_TABLE and
+%% ?COLLECTION_CLAUSE_TABLE. The counter data is consolidated into those
+%% tables from the counters on both the main node and from remote nodes.
+%% This consolidation is done when a remote node is stopped with
+%% cover:stop/1 or just before starting an analysis.
+%%
+%% The main node also has a table named ?BINARY_TABLE. This table
+%% contains the abstract code code for each cover-compiled
+%% module. This is necessary so that the code can be loaded on remote
+%% nodes that are started after the compilation.
 %%
 %% PARALLELISM
+%%
 %% To take advantage of SMP when doing the cover analysis both the data 
 %% collection and analysis has been parallelized. One process is spawned for
 %% each node when collecting data, and on the remote node when collecting data
 %% one process is spawned per module. 
 %% 
-%% When analyzing data it is possible to issue multiple analyse(_to_file)/X 
-%% calls at once. They are however all calls (for backwards compatibility
-%% reasons) so the user of cover will have to spawn several processes to to the
-%% calls ( or use async_analyse_to_file ). 
+%% When analyzing data it is possible to issue multiple
+%% analyse(_to_file)/X calls at once. They are, however, all calls
+%% (for backwards compatibility reasons), so the user of cover will
+%% have to spawn several processes to to the calls (or use
+%% async_analyse_to_file/X).
 %%
 
 %% External exports
@@ -89,7 +107,8 @@
 	 modules/0, imported/0, imported_modules/0, which_nodes/0, is_compiled/1,
 	 reset/1, reset/0,
 	 flush/1,
-	 stop/0, stop/1]).
+	 stop/0, stop/1,
+         local_only/0]).
 -export([remote_start/1,get_main_node/0]).
 
 %% Used internally to ensure we upgrade the code to the latest version.
@@ -98,9 +117,16 @@
 -record(main_state, {compiled=[],           % [{Module,File}]
 		     imported=[],           % [{Module,File,ImportFile}]
 		     stopper,               % undefined | pid()
+                     local_only=false,      % true | false
 		     nodes=[],              % [Node]
 		     lost_nodes=[]}).       % [Node]
 
+-record(remote_data, {module,
+                      file,
+                      code,
+                      mapping,
+                      clauses}).
+
 -record(remote_state, {compiled=[],         % [{Module,File}]
 		       main_node}).         % atom()
 
@@ -126,11 +152,12 @@
 	       is_guard=false               % boolean
 	      }).
 
--define(COVER_TABLE, 'cover_internal_data_table').
+-define(COVER_MAPPING_TABLE, 'cover_internal_mapping_table').
 -define(COVER_CLAUSE_TABLE, 'cover_internal_clause_table').
 -define(BINARY_TABLE, 'cover_binary_code_table').
 -define(COLLECTION_TABLE, 'cover_collected_remote_data_table').
 -define(COLLECTION_CLAUSE_TABLE, 'cover_collected_remote_clause_table').
+
 -define(TAG, cover_compiled).
 -define(SERVER, cover_server).
 
@@ -186,6 +213,11 @@ start(Node) when is_atom(Node) ->
 start(Nodes) ->
     call({start_nodes,remove_myself(Nodes,[])}).
 
+%% local_only() -> ok | {error,too_late}
+
+local_only() ->
+    call(local_only).
+
 %% compile(ModFiles) ->
 %% compile(ModFiles, Options) ->
 %% compile_module(ModFiles) -> Result
@@ -255,15 +287,8 @@ compile_directory(Dir, Options) when is_list(Dir), is_list(Options) ->
 
 compile_modules(Files,Options) ->
     Options2 = filter_options(Options),
-    %% compile_modules(Files,Options2,[]).
     call({compile, Files, Options2}).
 
-%% compile_modules([File|Files], Options, Result) ->
-%%     R = call({compile, File, Options}),
-%%     compile_modules(Files,Options,[R|Result]);
-%% compile_modules([],_Opts,Result) ->
-%%     lists:reverse(Result).
-
 filter_options(Options) ->
     lists:filter(fun(Option) ->
                          case Option of
@@ -561,16 +586,6 @@ flush(Nodes) ->
 get_main_node() ->
     call(get_main_node).
 
-%% bump(Module, Function, Arity, Clause, Line)
-%%   Module = Function = atom()
-%%   Arity = Clause = Line = integer()
-%% This function is inserted into Cover compiled modules, once for each
-%% executable line.
-%bump(Module, Function, Arity, Clause, Line) ->
-%    Key = #bump{module=Module, function=Function, arity=Arity, clause=Clause,
-%		line=Line},
-%    ets:update_counter(?COVER_TABLE, Key, 1).
-
 call(Request) ->
     Ref = erlang:monitor(process,?SERVER),
     receive {'DOWN', Ref, _Type, _Object, noproc} -> 
@@ -631,10 +646,8 @@ remote_reply(MainNode,Reply) ->
 
 init_main(Starter) ->
     register(?SERVER,self()),
-    %% Having write concurrancy here gives a 40% performance boost
-    %% when collect/1 is called. 
-    ?COVER_TABLE = ets:new(?COVER_TABLE, [set, public, named_table,
-                                          {write_concurrency, true}]),
+    ?COVER_MAPPING_TABLE = ets:new(?COVER_MAPPING_TABLE,
+                                   [ordered_set, public, named_table]),
     ?COVER_CLAUSE_TABLE = ets:new(?COVER_CLAUSE_TABLE, [set, public,
                                                         named_table]),
     ?BINARY_TABLE = ets:new(?BINARY_TABLE, [set, public, named_table]),
@@ -648,10 +661,26 @@ init_main(Starter) ->
 
 main_process_loop(State) ->
     receive
+        {From, local_only} ->
+            case State of
+                #main_state{compiled=[],nodes=[]} ->
+                    reply(From, ok),
+                    main_process_loop(State#main_state{local_only=true});
+                #main_state{} ->
+                    reply(From, {error,too_late}),
+                    main_process_loop(State)
+            end;
+
 	{From, {start_nodes,Nodes}} ->
-	    {StartedNodes,State1} = do_start_nodes(Nodes, State),
-	    reply(From, {ok,StartedNodes}),
-	    main_process_loop(State1);
+            case State#main_state.local_only of
+                false ->
+                    {StartedNodes,State1} = do_start_nodes(Nodes, State),
+                    reply(From, {ok,StartedNodes}),
+                    main_process_loop(State1);
+                true ->
+                    reply(From, {error,local_only}),
+                    main_process_loop(State)
+            end;
 
 	{From, {compile, Files, Options}} ->
 	    {R,S} = do_compile(Files, Options, State),
@@ -742,11 +771,12 @@ main_process_loop(State) ->
 	      end,
 	      State#main_state.nodes),
 	    reload_originals(State#main_state.compiled),
-            ets:delete(?COVER_TABLE),
+            ets:delete(?COVER_MAPPING_TABLE),
             ets:delete(?COVER_CLAUSE_TABLE),
             ets:delete(?BINARY_TABLE),
             ets:delete(?COLLECTION_TABLE),
             ets:delete(?COLLECTION_CLAUSE_TABLE),
+            delete_all_counters(),
             unregister(?SERVER),
 	    reply(From, ok);
 
@@ -878,10 +908,8 @@ main_process_loop(State) ->
 
 init_remote(Starter,MainNode) ->
     register(?SERVER,self()),
-    %% write_concurrency here makes otp_8270 break :(
-    ?COVER_TABLE = ets:new(?COVER_TABLE, [set, public, named_table
-                                          %,{write_concurrency, true}
-                                         ]),
+    ?COVER_MAPPING_TABLE = ets:new(?COVER_MAPPING_TABLE,
+                                   [ordered_set, public, named_table]),
     ?COVER_CLAUSE_TABLE = ets:new(?COVER_CLAUSE_TABLE, [set, public,
                                                         named_table]),
     Starter ! {self(),started},
@@ -904,7 +932,7 @@ remote_process_loop(State) ->
 	    remote_process_loop(State#remote_state{compiled=Compiled});
 
 	{remote,reset,Module} ->
-	    do_reset(Module),
+	    reset_counters(Module),
 	    remote_reply(State#remote_state.main_node, ok),
 	    remote_process_loop(State);
 
@@ -925,8 +953,9 @@ remote_process_loop(State) ->
 
 	{remote,stop} ->
 	    reload_originals(State#remote_state.compiled),
-	    ets:delete(?COVER_TABLE),
+	    ets:delete(?COVER_MAPPING_TABLE),
             ets:delete(?COVER_CLAUSE_TABLE),
+            delete_all_counters(),
             unregister(?SERVER),
 	    ok; % not replying since 'DOWN' message will be received anyway
 
@@ -961,28 +990,12 @@ remote_process_loop(State) ->
     end.
 
 do_collect(Modules, CollectorPid, From) ->
-    _ = pmap(
-          fun(Module) ->
-                  Pattern = {#bump{module=Module, _='_'}, '$1'},
-                  MatchSpec = [{Pattern,[{'=/=','$1',0}],['$_']}],
-                  Match = ets:select(?COVER_TABLE,MatchSpec,?CHUNK_SIZE),
-                  send_chunks(Match, CollectorPid, [])
-          end,Modules),
+    _ = pmap(fun(Module) ->
+                     send_counters(Module, CollectorPid)
+             end, Modules),
     CollectorPid ! done,
     remote_reply(From, ok).
 
-send_chunks('$end_of_table', _CollectorPid, Mons) ->
-    get_downs(Mons);
-send_chunks({Chunk,Continuation}, CollectorPid, Mons) ->
-    Mon = spawn_monitor(
-	    fun() ->
-		    lists:foreach(fun({Bump,_N}) ->
-					  ets:insert(?COVER_TABLE, {Bump,0})
-				  end,
-				  Chunk) end),
-    send_chunk(CollectorPid,Chunk),
-    send_chunks(ets:select(Continuation), CollectorPid, [Mon|Mons]).
-
 send_chunk(CollectorPid,Chunk) ->
     CollectorPid ! {chunk,Chunk,self()},
     receive continue -> ok end.
@@ -1021,10 +1034,15 @@ do_reload_original(Module) ->
 	    ignore
     end.
 
-load_compiled([{Module,File,Binary,InitialTable}|Compiled],Acc) ->
-    %% Make sure the #bump{} records are available *before* the
-    %% module is loaded.
-    insert_initial_data(InitialTable),
+load_compiled([Data|Compiled],Acc) ->
+    %% Make sure the #bump{} records and counters are available *before*
+    %% compiling and loading the code.
+    #remote_data{module=Module,file=File,code=Beam,
+                 mapping=InitialMapping,clauses=InitialClauses} = Data,
+    ets:insert(?COVER_MAPPING_TABLE, InitialMapping),
+    ets:insert(?COVER_CLAUSE_TABLE, InitialClauses),
+    maybe_create_counters(Module, true),
+
     Sticky = case code:is_sticky(Module) of
                  true ->
                      code:unstick_mod(Module),
@@ -1032,7 +1050,7 @@ load_compiled([{Module,File,Binary,InitialTable}|Compiled],Acc) ->
                  false ->
                      false
              end,
-    NewAcc = case code:load_binary(Module, ?TAG, Binary) of
+    NewAcc = case code:load_binary(Module, ?TAG, Beam) of
                  {module,Module} ->
                      add_compiled(Module, File, Acc);
                  _  ->
@@ -1047,16 +1065,6 @@ load_compiled([{Module,File,Binary,InitialTable}|Compiled],Acc) ->
 load_compiled([],Acc) ->
     Acc.
 
-insert_initial_data([Item|Items]) when is_atom(element(1,Item)) ->
-    ets:insert(?COVER_CLAUSE_TABLE, Item),
-    insert_initial_data(Items);
-insert_initial_data([Item|Items]) ->
-    ets:insert(?COVER_TABLE, Item),
-    insert_initial_data(Items);
-insert_initial_data([]) ->
-    ok.
-    
-
 unload([Module|Modules]) ->
     do_clear(Module),
     do_reload_original(Module),
@@ -1177,7 +1185,7 @@ get_downs_r([]) ->
     [];
 get_downs_r(Mons) ->
     receive
-	{'DOWN', Ref, _Type, Pid, R={_,_,_,_}} ->
+	{'DOWN', Ref, _Type, Pid, #remote_data{}=R} ->
 	    [R|get_downs_r(lists:delete({Pid,Ref},Mons))];
 	{'DOWN', Ref, _Type, Pid, Reason} = Down ->
 	    case lists:member({Pid,Ref},Mons) of
@@ -1196,19 +1204,13 @@ get_downs_r(Mons) ->
 %% Binary is the beam code for the module and InitialTable is the initial
 %% data to insert in ?COVER_TABLE.
 get_data_for_remote_loading({Module,File}) ->
-    [{Module,Binary}] = ets:lookup(?BINARY_TABLE,Module),
+    [{Module,Code}] = ets:lookup(?BINARY_TABLE, Module),
     %%! The InitialTable list will be long if the module is big - what to do??
-    InitialBumps = ets:select(?COVER_TABLE,ms(Module)),
+    Mapping = counters_mapping_table(Module),
     InitialClauses = ets:lookup(?COVER_CLAUSE_TABLE,Module),
 
-    {Module,File,Binary,InitialBumps ++ InitialClauses}.
-
-%% Create a match spec which returns the clause info {Module,InitInfo} and 
-%% all #bump keys for the given module with 0 number of calls.
-ms(Module) ->
-    ets:fun2ms(fun({Key,_}) when Key#bump.module=:=Module -> 
-		       {Key,0}
-	       end).
+    #remote_data{module=Module,file=File,code=Code,
+                 mapping=Mapping,clauses=InitialClauses}.
 
 %% Unload modules on remote nodes
 remote_unload(Nodes,UnloadedModules) ->
@@ -1464,7 +1466,7 @@ get_compiled_still_loaded(Nodes,Compiled0) ->
 
 do_compile_beams(ModsAndFiles, State) ->
     Result0 = pmap(fun({ok,Module,File}) ->
-			  do_compile_beam(Module,File,State);
+			  do_compile_beam(Module, File, State);
 		     (Error) ->
 			  Error
 		  end,
@@ -1476,8 +1478,10 @@ do_compile_beams(ModsAndFiles, State) ->
 do_compile_beam(Module,BeamFile0,State) ->
     case get_beam_file(Module,BeamFile0,State#main_state.compiled) of
 	{ok,BeamFile} ->
+            LocalOnly = State#main_state.local_only,
 	    UserOptions = get_compile_options(Module,BeamFile),
-	    case do_compile_beam1(Module,BeamFile,UserOptions) of
+	    case do_compile_beam1(Module,BeamFile,
+                                  UserOptions,LocalOnly) of
 		{ok, Module} ->
 		    {ok,Module,BeamFile};
 		error ->
@@ -1503,41 +1507,39 @@ fix_state_and_result([],State,Acc) ->
 
 
 do_compile(Files, Options, State) ->
+    LocalOnly = State#main_state.local_only,
     Result0 = pmap(fun(File) ->
-			   do_compile(File, Options)
+			   do_compile1(File, Options, LocalOnly)
 		   end,
 		   Files),
     Compiled = [{M,F} || {ok,M,F} <- Result0],
     remote_load_compiled(State#main_state.nodes,Compiled),
     fix_state_and_result(Result0,State,[]).
 
-do_compile(File, Options) ->    
-    case do_compile1(File, Options) of
+do_compile1(File, Options, LocalOnly) ->
+    case do_compile2(File, Options, LocalOnly) of
 	{ok, Module} ->
 	    {ok,Module,File};
 	error ->
 	    {error,File}
     end.
 
-%% do_compile1(File, Options) -> {ok,Module} | error
-do_compile1(File, UserOptions) ->
+%% do_compile2(File, Options) -> {ok,Module} | error
+do_compile2(File, UserOptions, LocalOnly) ->
     Options = [debug_info,binary,report_errors,report_warnings] ++ UserOptions,
     case compile:file(File, Options) of
 	{ok, Module, Binary} ->
-	    do_compile_beam1(Module,Binary,UserOptions);
+	    do_compile_beam1(Module,Binary,UserOptions,LocalOnly);
 	error ->
 	    error
     end.
 
 %% Beam is a binary or a .beam file name
-do_compile_beam1(Module,Beam,UserOptions) ->
+do_compile_beam1(Module,Beam,UserOptions,LocalOnly) ->
     %% Clear database
     do_clear(Module),
     
-    %% Extract the abstract format and insert calls to bump/6 at
-    %% every executable line and, as a side effect, initiate
-    %% the database
-    
+    %% Extract the abstract format.
     case get_abstract_code(Module, Beam) of
 	no_abstract_code=E ->
 	    {error,E};
@@ -1547,7 +1549,8 @@ do_compile_beam1(Module,Beam,UserOptions) ->
             Forms0 = epp:interpret_file_attribute(Code),
 	    case find_main_filename(Forms0) of
 		{ok,MainFile} ->
-		    do_compile_beam2(Module,Beam,UserOptions,Forms0,MainFile);
+		    do_compile_beam2(Module,Beam,UserOptions,
+                                     Forms0,MainFile,LocalOnly);
 		Error ->
 		    Error
 	    end;
@@ -1566,26 +1569,35 @@ get_abstract_code(Module, Beam) ->
 	Error -> Error
     end.
 
-do_compile_beam2(Module,Beam,UserOptions,Forms0,MainFile) ->
-    {Forms,Vars} = transform(Forms0, Module, MainFile),
+do_compile_beam2(Module,Beam,UserOptions,Forms0,MainFile,LocalOnly) ->
+    init_counter_mapping(Module),
+
+    %% Instrument the abstract code by inserting
+    %% calls to update the counters.
+    {Forms,Vars} = transform(Forms0, Module, MainFile, LocalOnly),
+
+    %% Create counters.
+    maybe_create_counters(Module, not LocalOnly),
 
     %% We need to recover the source from the compilation
     %% info otherwise the newly compiled module will have
     %% source pointing to the current directory
     SourceInfo = get_source_info(Module, Beam),
 
-    %% Compile and load the result
+    %% Compile and load the result.
     %% It's necessary to check the result of loading since it may
-    %% fail, for example if Module resides in a sticky directory
-    {ok, Module, Binary} = compile:forms(Forms, SourceInfo ++ UserOptions),
+    %% fail, for example if Module resides in a sticky directory.
+    Options = SourceInfo ++ UserOptions,
+    {ok, Module, Binary} = compile:forms(Forms, Options),
+
     case code:load_binary(Module, ?TAG, Binary) of
 	{module, Module} ->
 
-	    %% Store info about all function clauses in database
+	    %% Store info about all function clauses in database.
 	    InitInfo = lists:reverse(Vars#vars.init_info),
 	    ets:insert(?COVER_CLAUSE_TABLE, {Module, InitInfo}),
 
-	    %% Store binary code so it can be loaded on remote nodes
+	    %% Store binary code so it can be loaded on remote nodes.
 	    ets:insert(?BINARY_TABLE, {Module, Binary}),
 
 	    {ok, Module};
@@ -1617,11 +1629,12 @@ get_compile_info(Module, Beam) ->
 		[]
     end.
 
-transform(Code, Module, MainFile) ->
+transform(Code, Module, MainFile, LocalOnly) ->
     Vars0 = #vars{module=Module},
-    {ok,MungedForms,Vars} = transform_2(Code,[],Vars0,MainFile,on),
+    {ok,MungedForms0,Vars} = transform_2(Code, [], Vars0, MainFile, on),
+    MungedForms = patch_code(Module, MungedForms0, LocalOnly),
     {MungedForms,Vars}.
-    
+
 %% Helpfunction which returns the first found file-attribute, which can
 %% be interpreted as the name of the main erlang source file.
 find_main_filename([{attribute,_,file,{MainFile,_}}|_]) ->
@@ -1788,19 +1801,7 @@ munge_body([Expr|Body], Vars, MungedBody, LastExprBumpLines) ->
             MungedExprs1 = [MungedExpr|MungedBody1],
 	    munge_body(Body, Vars3, MungedExprs1, NewBumps);
 	false ->
-	    ets:insert(?COVER_TABLE, {#bump{module   = Vars#vars.module,
-					    function = Vars#vars.function,
-					    arity    = Vars#vars.arity,
-					    clause   = Vars#vars.clause,
-					    line     = Line},
-				      0}),
             Bump = bump_call(Vars, Line),
-%	    Bump = {call, 0, {remote, 0, {atom,0,cover}, {atom,0,bump}},
-%		    [{atom, 0, Vars#vars.module},
-%		     {atom, 0, Vars#vars.function},
-%		     {integer, 0, Vars#vars.arity},
-%		     {integer, 0, Vars#vars.clause},
-%		     {integer, 0, Line}]},
 	    Lines2 = [Line|Lines],
 	    {MungedExpr, Vars2} = munge_expr(Expr, Vars#vars{lines=Lines2}),
             NewBumps = new_bumps(Vars2, Vars),
@@ -1855,8 +1856,10 @@ maybe_fix_last_expr(MungedExprs, Vars, LastExprBumpLines) ->
 
 last_expr_needs_fixing(Vars, LastExprBumpLines) ->
     case common_elems(Vars#vars.no_bump_lines, LastExprBumpLines) of
-        [Line] -> {yes, Line};
-        _ -> no
+        [Line] ->
+            {yes, Line};
+        _ ->
+            no
     end.
 
 fix_last_expr([MungedExpr|MungedExprs], Line, Vars) ->
@@ -1921,9 +1924,7 @@ fix_cls([Cl | Cls], Line, Bump) ->
 bumps_line(E, L) ->
     try bumps_line1(E, L) catch true -> true end.
 
-bumps_line1({call,_,{remote,_,{atom,_,ets},{atom,_,update_counter}},
-             [{atom,_,?COVER_TABLE},{tuple,_,[_,_,_,_,_,{integer,_,Line}]},_]},
-            Line) ->
+bumps_line1({'BUMP',Line,_}, Line) ->
     throw(true);
 bumps_line1([E | Es], Line) ->
     bumps_line1(E, Line),
@@ -1933,19 +1934,12 @@ bumps_line1(T, Line) when is_tuple(T) ->
 bumps_line1(_, _) ->
     false.
 
-%%% End of fix of last expression.
-
+%% Insert a place holder for the call to counters:add/3 in the
+%% abstract code.
 bump_call(Vars, Line) ->
-    A = erl_anno:new(0),
-    {call,A,{remote,A,{atom,A,ets},{atom,A,update_counter}},
-     [{atom,A,?COVER_TABLE},
-      {tuple,A,[{atom,A,?BUMP_REC_NAME},
-                {atom,A,Vars#vars.module},
-                {atom,A,Vars#vars.function},
-                {integer,A,Vars#vars.arity},
-                {integer,A,Vars#vars.clause},
-                {integer,A,Line}]},
-      {integer,A,1}]}.
+    {'BUMP',Line,counter_index(Vars, Line)}.
+
+%%% End of fix of last expression.
 
 munge_expr({match,Line,ExprL,ExprR}, Vars) ->
     {MungedExprL, Vars2} = munge_expr(ExprL, Vars),
@@ -2105,6 +2099,159 @@ subtract(L1, L2) ->
 common_elems(L1, L2) ->
     [E || E <- L1, lists:member(E, L2)].
 
+%%%--Counters------------------------------------------------------------
+
+init_counter_mapping(Mod) ->
+    true = ets:insert_new(?COVER_MAPPING_TABLE, {Mod,0}),
+    ok.
+
+counter_index(Vars, Line) ->
+    #vars{module=Mod,function=F,arity=A,clause=C} = Vars,
+    Key = #bump{module=Mod,function=F,arity=A,
+                clause=C,line=Line},
+    case ets:lookup(?COVER_MAPPING_TABLE, Key) of
+        [] ->
+            Index = ets:update_counter(?COVER_MAPPING_TABLE,
+                                       Mod, {2,1}),
+            true = ets:insert(?COVER_MAPPING_TABLE, {Key,Index}),
+            Index;
+        [{Key,Index}] ->
+            Index
+    end.
+
+%% Create the counter array and store as a persistent term.
+maybe_create_counters(Mod, true) ->
+    Cref = create_counters(Mod),
+    Key = {?MODULE,Mod},
+    persistent_term:put(Key, Cref),
+    ok;
+maybe_create_counters(_Mod, false) ->
+    ok.
+
+create_counters(Mod) ->
+    Size0 = ets:lookup_element(?COVER_MAPPING_TABLE, Mod, 2),
+    Size = max(1, Size0),                       %Size must not be 0.
+    Cref = counters:new(Size, [write_concurrency]),
+    ets:insert(?COVER_MAPPING_TABLE, {{counters,Mod},Cref}),
+    Cref.
+
+patch_code(Mod, Forms, false) ->
+    A = erl_anno:new(0),
+    AbstrKey = {tuple,A,[{atom,A,?MODULE},{atom,A,Mod}]},
+    patch_code1(Forms, {distributed,AbstrKey});
+patch_code(Mod, Forms, true) ->
+    Cref = create_counters(Mod),
+    AbstrCref = cid_to_abstract(Cref),
+    patch_code1(Forms, {local_only,AbstrCref}).
+
+%% Go through the abstract code and replace 'BUMP' forms
+%% with the actual code to increment the counters.
+patch_code1({'BUMP',_Line,Index}, {distributed,AbstrKey}) ->
+    %% Replace with counters:add(persistent_term:get(Key), Index, 1).
+    %% This code will work on any node.
+    A = element(2, AbstrKey),
+    GetCref = {call,A,{remote,A,{atom,A,persistent_term},{atom,A,get}},
+               [AbstrKey]},
+    {call,A,{remote,A,{atom,A,counters},{atom,A,add}},
+     [GetCref,{integer,A,Index},{integer,A,1}]};
+patch_code1({'BUMP',_Line,Index}, {local_only,AbstrCref}) ->
+    %% Replace with counters:add(Cref, Index, 1). This code
+    %% will only work on the local node.
+    A = element(2, AbstrCref),
+    {call,A,{remote,A,{atom,A,counters},{atom,A,add}},
+     [AbstrCref,{integer,A,Index},{integer,A,1}]};
+patch_code1({clauses,Cs}, Key) ->
+    {clauses,[patch_code1(El, Key) || El <- Cs]};
+patch_code1([_|_]=List, Key) ->
+    [patch_code1(El, Key) || El <- List];
+patch_code1(Tuple, Key) when tuple_size(Tuple) >= 3 ->
+    Acc = [element(2, Tuple),element(1, Tuple)],
+    patch_code_tuple(3, tuple_size(Tuple), Tuple, Key, Acc);
+patch_code1(Other, _Key) ->
+    Other.
+
+patch_code_tuple(I, Size, Tuple, Key, Acc) when I =< Size ->
+    El = patch_code1(element(I, Tuple), Key),
+    patch_code_tuple(I + 1, Size, Tuple, Key, [El|Acc]);
+patch_code_tuple(_I, _Size, _Tuple, _Key, Acc) ->
+    list_to_tuple(lists:reverse(Acc)).
+
+%% Don't try this at home! Assumes knowledge of the internal
+%% representation of a counter ref.
+cid_to_abstract(Cref0) ->
+    A = erl_anno:new(0),
+    %% Disable dialyzer warning for breaking opacity.
+    Cref = binary_to_term(term_to_binary(Cref0)),
+    {write_concurrency,Ref} = Cref,
+    {tuple,A,[{atom,A,write_concurrency},{integer,A,Ref}]}.
+
+%% Called on the remote node. Collect and send counters to
+%% the main node. Also zero the counters.
+send_counters(Mod, CollectorPid) ->
+    Process = fun(Chunk) -> send_chunk(CollectorPid, Chunk) end,
+    move_counters(Mod, Process).
+
+%% Called on the main node. Collect the counters and consolidate
+%% them into the collection table. Also zero the counters.
+move_counters(Mod) ->
+    move_counters(Mod, fun insert_in_collection_table/1).
+
+move_counters(Mod, Process) ->
+    Pattern = {#bump{module=Mod,_='_'},'_'},
+    Matches = ets:match_object(?COVER_MAPPING_TABLE, Pattern, ?CHUNK_SIZE),
+    Cref = get_counters_ref(Mod),
+    move_counters1(Matches, Cref, Process).
+
+move_counters1({Mappings,Continuation}, Cref, Process) ->
+    Move = fun({Key,Index}) ->
+                   Count = counters:get(Cref, Index),
+                   ok = counters:sub(Cref, Index, Count),
+                   {Key,Count}
+           end,
+    Process(lists:map(Move, Mappings)),
+    move_counters1(ets:match_object(Continuation), Cref, Process);
+move_counters1('$end_of_table', _Cref, _Process) ->
+    ok.
+
+counters_mapping_table(Mod) ->
+    Mapping = counters_mapping(Mod),
+    Cref = get_counters_ref(Mod),
+    #{size:=Size} = counters:info(Cref),
+    [{Mod,Size}|Mapping].
+
+get_counters_ref(Mod) ->
+    ets:lookup_element(?COVER_MAPPING_TABLE, {counters,Mod}, 2).
+
+counters_mapping(Mod) ->
+    Pattern = {#bump{module=Mod,_='_'},'_'},
+    ets:match_object(?COVER_MAPPING_TABLE, Pattern).
+
+clear_counters(Mod) ->
+    _ = persistent_term:erase({?MODULE,Mod}),
+    ets:delete(?COVER_MAPPING_TABLE, Mod),
+    Pattern = {#bump{module=Mod,_='_'},'_'},
+    _ = ets:match_delete(?COVER_MAPPING_TABLE, Pattern),
+    ok.
+
+%% Reset counters (set counters to 0).
+reset_counters(Mod) ->
+    Pattern = {#bump{module=Mod,_='_'},'$1'},
+    MatchSpec = [{Pattern,[],['$1']}],
+    Matches = ets:select(?COVER_MAPPING_TABLE,
+                         MatchSpec, ?CHUNK_SIZE),
+    Cref = get_counters_ref(Mod),
+    reset_counters1(Matches, Cref).
+
+reset_counters1({Indices,Continuation}, Cref) ->
+    _ = [counters:put(Cref, N, 0) || N <- Indices],
+    reset_counters1(ets:select(Continuation), Cref);
+reset_counters1('$end_of_table', _Cref) ->
+    ok.
+
+delete_all_counters() ->
+    _ = [persistent_term:erase(Key) || {?MODULE,_}=Key <- persistent_term:get()],
+    ok.
+
 %%%--Analysis------------------------------------------------------------
 
 %% Collect data for all modules
@@ -2140,20 +2287,7 @@ collect(Module,Clauses,Nodes) ->
 %% ?COLLECTION_TABLE. Resetting data in ?COVER_TABLE
 move_modules({Module,Clauses}) ->
     ets:insert(?COLLECTION_CLAUSE_TABLE,{Module,Clauses}),
-    Pattern = {#bump{module=Module, _='_'}, '_'},
-    MatchSpec = [{Pattern,[],['$_']}],
-    Match = ets:select(?COVER_TABLE,MatchSpec,?CHUNK_SIZE),
-    do_move_module(Match).
-    
-do_move_module({Bumps,Continuation}) ->
-    lists:foreach(fun({Key,Val}) ->
-			  ets:insert(?COVER_TABLE, {Key,0}),
-			  insert_in_collection_table(Key,Val)
-		  end,
-		  Bumps),
-    do_move_module(ets:select(Continuation));
-do_move_module('$end_of_table') ->
-    ok.
+    move_counters(Module).
 
 %% Given a .beam file, find the .erl file. Look first in same directory as
 %% the .beam file, then in ../src, then in compile info.
@@ -2563,11 +2697,13 @@ table_row(Line, L) ->
 table_data(Line, L, N) ->
    LineNoNL = Line -- "\n",
    ["<td class=\"line\" id=\"L",integer_to_list(L),"\">",
+    "<a href=\"#L",integer_to_list(L),"\">",
     integer_to_list(L),
-    "</td>\n",
+    "</a></td>\n",
    "<td class=\"hits\">",maybe_integer_to_list(N),"</td>\n",
    "<td class=\"source\"><code>",LineNoNL,"</code></td>\n</tr>\n"].
 
+maybe_integer_to_list(0) -> "<pre style=\"display: inline;\">:-(</pre>";
 maybe_integer_to_list(N) when is_integer(N) -> integer_to_list(N);
 maybe_integer_to_list(_) -> "".
 
@@ -2707,7 +2843,7 @@ get_term(Fd) ->
 
 %% Reset main node and all remote nodes
 do_reset_main_node(Module,Nodes) ->
-    do_reset(Module),
+    reset_counters(Module),
     do_reset_collection_table(Module),
     remote_reset(Module,Nodes).
 
@@ -2715,27 +2851,9 @@ do_reset_collection_table(Module) ->
     ets:delete(?COLLECTION_CLAUSE_TABLE,Module),
     ets:match_delete(?COLLECTION_TABLE, {#bump{module=Module},'_'}).
 
-%% do_reset(Module) -> ok
-%% The reset is done on ?CHUNK_SIZE number of bumps to avoid building
-%% long lists in the case of very large modules
-do_reset(Module) ->
-    Pattern = {#bump{module=Module, _='_'}, '$1'},
-    MatchSpec = [{Pattern,[{'=/=','$1',0}],['$_']}],
-    Match = ets:select(?COVER_TABLE,MatchSpec,?CHUNK_SIZE),
-    do_reset2(Match).
-
-do_reset2({Bumps,Continuation}) ->
-    lists:foreach(fun({Bump,_N}) ->
-			  ets:insert(?COVER_TABLE, {Bump,0})
-		  end,
-		  Bumps),
-    do_reset2(ets:select(Continuation));
-do_reset2('$end_of_table') ->
-    ok.    
-
 do_clear(Module) ->
     ets:match_delete(?COVER_CLAUSE_TABLE, {Module,'_'}),
-    ets:match_delete(?COVER_TABLE, {#bump{module=Module},'_'}),
+    clear_counters(Module),
     case lists:member(?COLLECTION_TABLE, ets:all()) of
 	true ->
 	    %% We're on the main node
diff --git a/lib/tools/src/tools.app.src b/lib/tools/src/tools.app.src
index f8c6aa22cb..f0e0fc4bec 100644
--- a/lib/tools/src/tools.app.src
+++ b/lib/tools/src/tools.app.src
@@ -21,11 +21,13 @@
  [{description, "DEVTOOLS  CXC 138 16"},
   {vsn, "%VSN%"},
   {modules, [cover,
+	     cprof,
 	     eprof,
 	     fprof,
 	     instrument,
 	     lcnt,
 	     make,
+	     tags,
 	     xref,
 	     xref_base,
 	     xref_compiler,
diff --git a/lib/tools/test/cover_SUITE.erl b/lib/tools/test/cover_SUITE.erl
index 161b0105b9..ee58fd7a10 100644
--- a/lib/tools/test/cover_SUITE.erl
+++ b/lib/tools/test/cover_SUITE.erl
@@ -24,7 +24,8 @@
 -include_lib("common_test/include/ct.hrl").
 
 suite() ->
-    [{ct_hooks,[ts_install_cth]}].
+    [{ct_hooks,[ts_install_cth]},
+     {timetrap,{minutes,5}}].
 
 all() -> 
     NoStartStop = [eif,otp_5305,otp_5418,otp_7095,otp_8273,
@@ -35,7 +36,8 @@ all() ->
                  distribution, reconnect, die_and_reconnect,
                  dont_reconnect_after_stop, stop_node_after_disconnect,
                  export_import, otp_5031, otp_6115,
-                 otp_8270, otp_10979_hanging_node, otp_14817],
+                 otp_8270, otp_10979_hanging_node, otp_14817,
+                 local_only],
     case whereis(cover_server) of
         undefined ->
             [coverage,StartStop ++ NoStartStop];
@@ -1742,6 +1744,40 @@ otp_13289(Config) ->
     ok = file:delete(File),
     ok.
 
+local_only(Config) ->
+    ok = file:set_cwd(proplists:get_value(data_dir, Config)),
+
+    %% Trying restricting to local nodes too late.
+    cover:start(),
+    {ok,a} = cover:compile(a),
+    [a] = cover:modules(),
+    {error,too_late} = cover:local_only(),
+    cover:stop(),
+
+    %% Now test local only mode.
+    cover:start(),
+    ok = cover:local_only(),
+    [] = cover:modules(),
+    {ok,a} = cover:compile(a),
+    [a] = cover:modules(),
+    done = a:start(5),
+    {ok, {a,{17,2}}} = cover:analyse(a, coverage, module),
+    {ok, [{{a,exit_kalle,0},{1,0}},
+          {{a,loop,3},{5,1}},
+          {{a,pong,1},{1,0}},
+          {{a,start,1},{6,0}},
+          {{a,stop,1},{0,1}},
+          {{a,trycatch,1},{4,0}}]} =
+        cover:analyse(a, coverage, function),
+
+    %% Make sure that it is not possible to run cover on
+    %% slave nodes.
+    {ok,Name} = test_server:start_node(?FUNCTION_NAME, slave, []),
+    {error,local_only} = cover:start([Name]),
+    test_server:stop_node(Name),
+
+    ok.
+
 %%--Auxiliary------------------------------------------------------------
 
 analyse_expr(Expr, Config) ->
diff --git a/lib/tools/test/emacs_SUITE.erl b/lib/tools/test/emacs_SUITE.erl
index a6d43d1816..8756a4e9b3 100644
--- a/lib/tools/test/emacs_SUITE.erl
+++ b/lib/tools/test/emacs_SUITE.erl
@@ -70,19 +70,20 @@ bif_highlight(Config) ->
 
 
 check_bif_highlight(Bin, Tag, Compare) ->
-    [_H,IntMatch,_T] =
+    [_H,Match,_T] =
         re:split(Bin,<<"defvar ",Tag/binary,
                        "[^(]*\\(([^)]*)">>,[]),
-    EmacsIntBifs = [list_to_atom(S) ||
-                  S <- string:tokens(binary_to_list(IntMatch)," '\"\n")],
+    EmacsBifs = [list_to_atom(S) ||
+                  S <- string:tokens(binary_to_list(Match)," '\"\n")],
 
-    ct:log("Emacs ~p",[EmacsIntBifs]),
-    ct:log("Int ~p",[Compare]),
+    ct:log("Comparing ~s", [Tag]),
+    ct:log("Emacs ~p",[EmacsBifs]),
+    ct:log("Erlang ~p",[Compare]),
 
-    ct:log("Diff1 ~p",[Compare -- EmacsIntBifs]),
-    ct:log("Diff2 ~p",[EmacsIntBifs -- Compare]),
-    [] = Compare -- EmacsIntBifs,
-    [] = EmacsIntBifs -- Compare.
+    ct:log("Only in Erlang ~p",[Compare -- EmacsBifs]),
+    ct:log("Only in Emacs ~p",[EmacsBifs -- Compare]),
+    [] = Compare -- EmacsBifs,
+    [] = EmacsBifs -- Compare.
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
@@ -188,7 +189,9 @@ diff(Orig, File) ->
     end.
 
 emacs_version_ok(AcceptVer) ->
-    case os:cmd("emacs --version | head -1") of
+    VersionLine = os:cmd("emacs --version | head -1"),
+    io:format("~s~n", [VersionLine]),
+    case VersionLine of
         "GNU Emacs " ++ Ver ->
             case string:to_float(Ver) of
                 {Vsn, _} when Vsn >= AcceptVer ->
diff --git a/lib/tools/test/instrument_SUITE.erl b/lib/tools/test/instrument_SUITE.erl
index 8c521b2e1a..33259df58f 100644
--- a/lib/tools/test/instrument_SUITE.erl
+++ b/lib/tools/test/instrument_SUITE.erl
@@ -77,6 +77,8 @@ allocations_ramv(Config) when is_list(Config) ->
 verify_allocations_disabled(_AllocType, Result) ->
     verify_allocations_disabled(Result).
 
+verify_allocations_disabled({ok, {_HistStart, _UnscannedBytes, Allocs}}) ->
+    true = Allocs =:= #{};
 verify_allocations_disabled({error, not_enabled}) ->
     ok.
 
@@ -91,6 +93,13 @@ verify_allocations_enabled(_AllocType, Result) ->
 verify_allocations_enabled({ok, {_HistStart, _UnscannedBytes, Allocs}}) ->
     true = Allocs =/= #{}.
 
+verify_allocations_output(#{}, {ok, {_, _, Allocs}}) when Allocs =:= #{} ->
+    %% This happens when the allocator is enabled but tagging is disabled. If
+    %% there's an error that causes Allocs to always be empty when enabled it
+    %% will be caught by verify_allocations_enabled.
+    ok;
+verify_allocations_output(#{}, {error, not_enabled}) ->
+    ok;
 verify_allocations_output(#{ histogram_start := HistStart,
                              histogram_width := HistWidth },
                     {ok, {HistStart, _UnscannedBytes, ByOrigin}}) ->
@@ -124,8 +133,6 @@ verify_allocations_output(#{ histogram_start := HistStart,
                     [BlockCount, GenTotalBlockCount])
     end,
 
-    ok;
-verify_allocations_output(#{}, {error, not_enabled}) ->
     ok.
 
 %% %% %% %% %% %%
@@ -214,7 +221,8 @@ verify_carriers_output(#{ histogram_start := HistStart,
             ct:fail("Carrier count is ~p, expected at least ~p (SBC).",
                 [CarrierCount, GenSBCCount]);
         CarrierCount >= GenSBCCount ->
-            ok
+            ct:pal("Found ~p carriers, required at least ~p (SBC)." ,
+                [CarrierCount, GenSBCCount])
     end,
 
     ok;
@@ -292,9 +300,19 @@ start_slave(Args) ->
     MicroSecs = erlang:monotonic_time(),
     Name = "instr" ++ integer_to_list(MicroSecs),
     Pa = filename:dirname(code:which(?MODULE)),
-    {ok, Node} = test_server:start_node(list_to_atom(Name),
-                                        slave,
-                                        [{args, "-pa " ++ Pa ++ " " ++ Args}]),
+
+    %% We pass arguments through ZFLAGS as the nightly tests rotate
+    %% +Meamax/+Meamin which breaks the _enabled and _disabled tests unless
+    %% overridden.
+    ZFlags = os:getenv("ERL_ZFLAGS", ""),
+    {ok, Node} = try
+                     os:putenv("ERL_ZFLAGS", ZFlags ++ [" " | Args]),
+                     test_server:start_node(list_to_atom(Name),
+                                            slave,
+                                            [{args, "-pa " ++ Pa}])
+                 after
+                     os:putenv("ERL_ZFLAGS", ZFlags)
+                 end,
     Node.
 
 generate_test_blocks() ->
@@ -309,8 +327,9 @@ generate_test_blocks() ->
               MBCs = [<<I, 0:64/unit:8>> ||
                       I <- lists:seq(1, ?GENERATED_MBC_BLOCK_COUNT)],
               Runner ! Ref,
-              receive after infinity -> ok end,
-              unreachable ! {SBCs, MBCs}
+              receive
+                   gurka -> gaffel ! {SBCs, MBCs}
+              end
           end),
     receive
         Ref -> ok
diff --git a/lib/tools/vsn.mk b/lib/tools/vsn.mk
index bb8305e9f1..5700885549 100644
--- a/lib/tools/vsn.mk
+++ b/lib/tools/vsn.mk
@@ -1 +1 @@
-TOOLS_VSN = 3.0.2
+TOOLS_VSN = 3.1
diff --git a/lib/wx/api_gen/wx_extra/added_func.h b/lib/wx/api_gen/wx_extra/added_func.h
index bffe391140..28fecbf454 100644
--- a/lib/wx/api_gen/wx_extra/added_func.h
+++ b/lib/wx/api_gen/wx_extra/added_func.h
@@ -44,3 +44,9 @@ class wxWindowGTK {
  public:
     double GetContentScaleFactor();
 };
+
+class wxDisplay {
+    public:
+    // get the resolution of this monitor in pixels per inch
+    wxSize GetPPI() const;
+};
diff --git a/lib/wx/api_gen/wx_gen.erl b/lib/wx/api_gen/wx_gen.erl
index cec6ac9ccf..8a00498319 100644
--- a/lib/wx/api_gen/wx_gen.erl
+++ b/lib/wx/api_gen/wx_gen.erl
@@ -701,8 +701,13 @@ parse_type2(["wxe_cb"|R],Info,Opts, T) ->
     parse_type2(R,Info,Opts,T#type{name=int,base=wxe_cb});
 parse_type2([const|R],Info,Opts,T=#type{mod=Mod}) -> 
     parse_type2(R,Info,Opts,T#type{mod=[const|Mod]});
-parse_type2(["unsigned"|R],Info,Opts,T=#type{mod=Mod}) -> 
-    parse_type2(R,Info,Opts,T#type{mod=[unsigned|Mod]});
+parse_type2(["unsigned"|R],Info,Opts,T=#type{mod=Mod}) ->
+    case T#type.base of
+        undefined ->
+            parse_type2(R,Info,Opts,T#type{name=int, base=int, mod=[unsigned|Mod]});
+        _ ->
+            parse_type2(R,Info,Opts,T#type{mod=[unsigned|Mod]})
+    end;
 parse_type2(["int"|R],Info,Opts,  T) -> 
     parse_type2(R,Info,Opts,T#type{name=int,base=int});
 parse_type2(["wxByte"|R],Info,Opts,  T) ->
diff --git a/lib/wx/api_gen/wx_gen_cpp.erl b/lib/wx/api_gen/wx_gen_cpp.erl
index f13d5873a0..c6f2534380 100644
--- a/lib/wx/api_gen/wx_gen_cpp.erl
+++ b/lib/wx/api_gen/wx_gen_cpp.erl
@@ -1165,6 +1165,7 @@ gen_macros() ->
     w("#include <wx/fontdlg.h>~n"),
     w("#include <wx/progdlg.h>~n"),
     w("#include <wx/printdlg.h>~n"),
+    w("#include <wx/display.h>~n"),
     w("#include <wx/dcbuffer.h>~n"),
     w("#include <wx/dcmirror.h>~n"),
     w("#include <wx/glcanvas.h>~n"),
@@ -1176,6 +1177,7 @@ gen_macros() ->
     w("#include <wx/sashwin.h>~n"),
     w("#include <wx/laywin.h>~n"),
     w("#include <wx/graphics.h>~n"),
+    w("#include <wx/dcgraph.h>~n"),
     w("#include <wx/aui/aui.h>~n"),
     w("#include <wx/datectrl.h>~n"),
     w("#include <wx/filepicker.h>~n"),
@@ -1330,8 +1332,10 @@ encode_events(Evs) ->
     w(" } else {~n"),
     w("   send_res =  rt.send();~n"),
     w("   if(cb->skip) event->Skip();~n"),
-    #class{id=MouseId} = lists:keyfind("wxMouseEvent", #class.name, Evs),
-    w("   if(app->recurse_level < 1 && Etype->cID != ~p) {~n", [MouseId]),
+    #class{id=SizeId} = lists:keyfind("wxSizeEvent", #class.name, Evs),
+    #class{id=MoveId} = lists:keyfind("wxMoveEvent", #class.name, Evs),
+    w("   if(app->recurse_level < 1 && (Etype->cID == ~w || Etype->cID == ~w)) {~n",
+      [SizeId, MoveId]),
     w("     app->recurse_level++;~n"),
     w("     app->dispatch_cmds();~n"),
     w("     app->recurse_level--;~n"),
diff --git a/lib/wx/api_gen/wxapi.conf b/lib/wx/api_gen/wxapi.conf
index c1b55b6875..9707fedf67 100644
--- a/lib/wx/api_gen/wxapi.conf
+++ b/lib/wx/api_gen/wxapi.conf
@@ -27,7 +27,7 @@
 {not_const,  [wxHAS_INT64,wxBYTE_ORDER,wxRETAINED,
 	      wxFONTENCODING_UTF32,wxFONTENCODING_UTF16,
 	      wxDEFAULT_CONTROL_BORDER,wxMOD_CMD,
-	      wxMAJOR_VERSION, wxMINOR_VERSION, 
+	      wxMAJOR_VERSION, wxMINOR_VERSION,
 	      wxRELEASE_NUMBER,wxSUBRELEASE_NUMBER,wxBETA_NUMBER,
 	      %%
 	      wxALWAYS_NATIVE_DOUBLE_BUFFER,
@@ -37,16 +37,30 @@
 	      wxCURSOR_DEFAULT,
 	      wxCURSOR_ARROWWAIT,
 	      wxCURSOR_MAX,
-	      wxLanguage
+	      wxLanguage,
+              wxFONTWEIGHT_NORMAL,
+              wxFONTWEIGHT_LIGHT,
+              wxFONTWEIGHT_BOLD,
+              wxFONTWEIGHT_MAX
 	     ]}.
 
-{gvars, 
+{gvars,
  [
   {wxITALIC_FONT, wxFont},
   {wxNORMAL_FONT, wxFont},
   {wxSMALL_FONT,  wxFont},
   {wxSWISS_FONT,  wxFont},
-  
+
+  %% Added (enum) values in 3.1.2
+  {wxFONTWEIGHT_INVALID, {test_if, "wxCHECK_VERSION(3,1,2)"}},
+  {wxFONTWEIGHT_THIN, {test_if, "wxCHECK_VERSION(3,1,2)"}},
+  {wxFONTWEIGHT_EXTRALIGHT, {test_if, "wxCHECK_VERSION(3,1,2)"}},
+  {wxFONTWEIGHT_MEDIUM, {test_if, "wxCHECK_VERSION(3,1,2)"}},
+  {wxFONTWEIGHT_SEMIBOLD, {test_if, "wxCHECK_VERSION(3,1,2)"}},
+  {wxFONTWEIGHT_EXTRABOLD, {test_if, "wxCHECK_VERSION(3,1,2)"}},
+  {wxFONTWEIGHT_HEAVY, {test_if, "wxCHECK_VERSION(3,1,2)"}},
+  {wxFONTWEIGHT_EXTRAHEAVY, {test_if, "wxCHECK_VERSION(3,1,2)"}},
+
   {wxBLACK_DASHED_PEN, wxPen},
   {wxBLACK_PEN, wxPen},
   {wxCYAN_PEN, wxPen},
@@ -2016,3 +2030,17 @@
  ['GetPosition', 'GetNumberOfFiles',
   {'GetFiles', [{return, [{single, {list, 'm_noFiles'}}]}]}
  ]}.
+
+
+{class, wxDisplay, root, [{ifdef, wxUSE_DISPLAY}],
+ ['wxDisplay', '~wxDisplay',
+  'IsOk',
+  {'GetClientArea', [{test_if, "wxCHECK_VERSION(2,8,12)"}]},
+  'GetGeometry', 'GetName', 'IsPrimary',
+  'GetCount', 'GetFromPoint', 'GetFromWindow',
+  {'GetPPI', [{test_if, "wxCHECK_VERSION(3,1,2)"}]}
+ ]}.
+
+{class, wxGCDC, wxDC, [{ifdef, wxUSE_GRAPHICS_CONTEXT}],
+ ['wxGCDC', '~wxGCDC', 'GetGraphicsContext', 'SetGraphicsContext'
+ ]}.
diff --git a/lib/wx/c_src/Makefile.in b/lib/wx/c_src/Makefile.in
index daa8afce83..8ec64bea7e 100644
--- a/lib/wx/c_src/Makefile.in
+++ b/lib/wx/c_src/Makefile.in
@@ -181,6 +181,7 @@ release_spec: opt
 	$(INSTALL_DIR) "$(RELSYSDIR)/priv"
 	$(INSTALL_DATA) ../priv/erlang-logo32.png "$(RELSYSDIR)/priv/"
 	$(INSTALL_DATA) ../priv/erlang-logo64.png "$(RELSYSDIR)/priv/"
+	$(INSTALL_DATA) ../priv/erlang-logo128.png "$(RELSYSDIR)/priv/"
 	$(INSTALL_PROGRAM) $(TARGET_DIR)/wxe_driver$(SO_EXT) "$(RELSYSDIR)/priv/"
 	$(INSTALL_PROGRAM) $(TARGET_DIR)/erl_gl$(SO_EXT) "$(RELSYSDIR)/priv/"
 
diff --git a/lib/wx/c_src/gen/wxe_derived_dest.h b/lib/wx/c_src/gen/wxe_derived_dest.h
index fc0ae0d9fc..a7114eb188 100644
--- a/lib/wx/c_src/gen/wxe_derived_dest.h
+++ b/lib/wx/c_src/gen/wxe_derived_dest.h
@@ -1,7 +1,7 @@
 /*
  * %CopyrightBegin%
  *
- * Copyright Ericsson AB 2008-2016. All Rights Reserved.
+ * Copyright Ericsson AB 2008-2018. All Rights Reserved.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -799,3 +799,11 @@ class EwxDCOverlay : public wxDCOverlay {
  EwxDCOverlay(wxOverlay& overlay,wxWindowDC * dc) : wxDCOverlay(overlay,dc) {};
 };
 
+#if wxUSE_GRAPHICS_CONTEXT
+class EwxGCDC : public wxGCDC {
+ public: ~EwxGCDC() {((WxeApp *)wxTheApp)->clearPtr(this);};
+ EwxGCDC(const wxWindowDC& dc) : wxGCDC(dc) {};
+ EwxGCDC() : wxGCDC() {};
+};
+#endif // wxUSE_GRAPHICS_CONTEXT
+
diff --git a/lib/wx/c_src/gen/wxe_events.cpp b/lib/wx/c_src/gen/wxe_events.cpp
index 01787c8a64..8c3283a670 100644
--- a/lib/wx/c_src/gen/wxe_events.cpp
+++ b/lib/wx/c_src/gen/wxe_events.cpp
@@ -1,7 +1,7 @@
 /*
  * %CopyrightBegin%
  *
- * Copyright Ericsson AB 2008-2016. All Rights Reserved.
+ * Copyright Ericsson AB 2008-2019. All Rights Reserved.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -910,7 +910,7 @@ case 238: {// wxDropFilesEvent
  } else {
    send_res =  rt.send();
    if(cb->skip) event->Skip();
-   if(app->recurse_level < 1 && Etype->cID != 168) {
+   if(app->recurse_level < 1 && (Etype->cID == 171 || Etype->cID == 172)) {
      app->recurse_level++;
      app->dispatch_cmds();
      app->recurse_level--;
diff --git a/lib/wx/c_src/gen/wxe_funcs.cpp b/lib/wx/c_src/gen/wxe_funcs.cpp
index 74961b2e5e..32e4bf855b 100644
--- a/lib/wx/c_src/gen/wxe_funcs.cpp
+++ b/lib/wx/c_src/gen/wxe_funcs.cpp
@@ -32113,6 +32113,120 @@ case wxDropFilesEvent_GetFiles: { // wxDropFilesEvent::GetFiles
  rt.add(tmpArrayStr);
  break;
 }
+#if wxUSE_DISPLAY
+case wxDisplay_new: { // wxDisplay::wxDisplay
+ int n=0;
+ while( * (int*) bp) { switch (* (int*) bp) {
+  case 1: {bp += 4;
+ n = (int)*(unsigned int *) bp; bp += 4;
+  } break;
+ }};
+ wxDisplay * Result = new wxDisplay(n);
+ newPtr((void *) Result, 239, memenv);
+ rt.addRef(getRef((void *)Result,memenv), "wxDisplay");
+ break;
+}
+case wxDisplay_destruct: { // wxDisplay::~wxDisplay
+ wxDisplay *This = (wxDisplay *) getPtr(bp,memenv); bp += 4;
+ if(This) {   ((WxeApp *) wxTheApp)->clearPtr((void *) This);
+   delete This;}
+ break;
+}
+case wxDisplay_IsOk: { // wxDisplay::IsOk
+ wxDisplay *This = (wxDisplay *) getPtr(bp,memenv); bp += 4;
+ if(!This) throw wxe_badarg(0);
+ bool Result = This->IsOk();
+ rt.addBool(Result);
+ break;
+}
+#if wxCHECK_VERSION(2,8,12)
+case wxDisplay_GetClientArea: { // wxDisplay::GetClientArea
+ wxDisplay *This = (wxDisplay *) getPtr(bp,memenv); bp += 4;
+ if(!This) throw wxe_badarg(0);
+ wxRect Result = This->GetClientArea();
+ rt.add(Result);
+ break;
+}
+#endif
+case wxDisplay_GetGeometry: { // wxDisplay::GetGeometry
+ wxDisplay *This = (wxDisplay *) getPtr(bp,memenv); bp += 4;
+ if(!This) throw wxe_badarg(0);
+ wxRect Result = This->GetGeometry();
+ rt.add(Result);
+ break;
+}
+case wxDisplay_GetName: { // wxDisplay::GetName
+ wxDisplay *This = (wxDisplay *) getPtr(bp,memenv); bp += 4;
+ if(!This) throw wxe_badarg(0);
+ wxString Result = This->GetName();
+ rt.add(Result);
+ break;
+}
+case wxDisplay_IsPrimary: { // wxDisplay::IsPrimary
+ wxDisplay *This = (wxDisplay *) getPtr(bp,memenv); bp += 4;
+ if(!This) throw wxe_badarg(0);
+ bool Result = This->IsPrimary();
+ rt.addBool(Result);
+ break;
+}
+case wxDisplay_GetCount: { // wxDisplay::GetCount
+ int Result = wxDisplay::GetCount();
+ rt.addUint(Result);
+ break;
+}
+case wxDisplay_GetFromPoint: { // wxDisplay::GetFromPoint
+ int * ptX = (int *) bp; bp += 4;
+ int * ptY = (int *) bp; bp += 4;
+ wxPoint pt = wxPoint(*ptX,*ptY);
+ int Result = wxDisplay::GetFromPoint(pt);
+ rt.addInt(Result);
+ break;
+}
+case wxDisplay_GetFromWindow: { // wxDisplay::GetFromWindow
+ wxWindow *window = (wxWindow *) getPtr(bp,memenv); bp += 4;
+ int Result = wxDisplay::GetFromWindow(window);
+ rt.addInt(Result);
+ break;
+}
+#if wxCHECK_VERSION(3,1,2)
+case wxDisplay_GetPPI: { // wxDisplay::GetPPI
+ wxDisplay *This = (wxDisplay *) getPtr(bp,memenv); bp += 4;
+ if(!This) throw wxe_badarg(0);
+ wxSize Result = This->GetPPI();
+ rt.add(Result);
+ break;
+}
+#endif
+#endif // wxUSE_DISPLAY
+#if wxUSE_GRAPHICS_CONTEXT
+case wxGCDC_new_1: { // wxGCDC::wxGCDC
+ wxWindowDC *dc = (wxWindowDC *) getPtr(bp,memenv); bp += 4;
+ wxGCDC * Result = new EwxGCDC(*dc);
+ newPtr((void *) Result, 8, memenv);
+ rt.addRef(getRef((void *)Result,memenv), "wxGCDC");
+ break;
+}
+case wxGCDC_new_0: { // wxGCDC::wxGCDC
+ wxGCDC * Result = new EwxGCDC();
+ newPtr((void *) Result, 8, memenv);
+ rt.addRef(getRef((void *)Result,memenv), "wxGCDC");
+ break;
+}
+case wxGCDC_GetGraphicsContext: { // wxGCDC::GetGraphicsContext
+ wxGCDC *This = (wxGCDC *) getPtr(bp,memenv); bp += 4;
+ if(!This) throw wxe_badarg(0);
+ wxGraphicsContext * Result = (wxGraphicsContext*)This->GetGraphicsContext();
+ rt.addRef(getRef((void *)Result,memenv,8), "wxGraphicsContext");
+ break;
+}
+case wxGCDC_SetGraphicsContext: { // wxGCDC::SetGraphicsContext
+ wxGCDC *This = (wxGCDC *) getPtr(bp,memenv); bp += 4;
+ wxGraphicsContext *ctx = (wxGraphicsContext *) getPtr(bp,memenv); bp += 4;
+ if(!This) throw wxe_badarg(0);
+ This->SetGraphicsContext(ctx);
+ break;
+}
+#endif // wxUSE_GRAPHICS_CONTEXT
   default: {
     wxeReturn error = wxeReturn(WXE_DRV_PORT, Ecmd.caller, false);    error.addAtom("_wxe_error_");
     error.addInt((int) op);
@@ -32174,6 +32288,7 @@ bool WxeApp::delete_object(void *ptr, wxeRefData *refd) {
   case 231: delete (EwxLocale *) ptr; return false;
   case 236: delete (wxOverlay *) ptr; break;
   case 237: delete (EwxDCOverlay *) ptr; return false;
+  case 239: delete (wxDisplay *) ptr; break;
   default: delete (wxObject *) ptr; return false;
   }
   return true;
diff --git a/lib/wx/c_src/gen/wxe_init.cpp b/lib/wx/c_src/gen/wxe_init.cpp
index 6ce33a5449..5a52d69003 100644
--- a/lib/wx/c_src/gen/wxe_init.cpp
+++ b/lib/wx/c_src/gen/wxe_init.cpp
@@ -55,6 +55,14 @@ void WxeApp::init_nonconsts(wxeMemEnv *memenv, ErlDrvTermData caller) {
  rt.addTupleCount(2);
  rt.addAtom("wxFONTENCODING_UTF32"); rt.addInt(wxFONTENCODING_UTF32);
  rt.addTupleCount(2);
+ rt.addAtom("wxFONTWEIGHT_BOLD"); rt.addInt(wxFONTWEIGHT_BOLD);
+ rt.addTupleCount(2);
+ rt.addAtom("wxFONTWEIGHT_LIGHT"); rt.addInt(wxFONTWEIGHT_LIGHT);
+ rt.addTupleCount(2);
+ rt.addAtom("wxFONTWEIGHT_MAX"); rt.addInt(wxFONTWEIGHT_MAX);
+ rt.addTupleCount(2);
+ rt.addAtom("wxFONTWEIGHT_NORMAL"); rt.addInt(wxFONTWEIGHT_NORMAL);
+ rt.addTupleCount(2);
  rt.addAtom("wxMOD_CMD"); rt.addInt(wxMOD_CMD);
  rt.addTupleCount(2);
  rt.addAtom("wxLANGUAGE_ABKHAZIAN"); rt.addInt(wxLANGUAGE_ABKHAZIAN);
@@ -654,6 +662,62 @@ void WxeApp::init_nonconsts(wxeMemEnv *memenv, ErlDrvTermData caller) {
    rt.addTupleCount(2);
    rt.addAtom("wxCYAN_PEN"); rt.addRef(getRef((void *)wxCYAN_PEN,memenv),"wxPen");
    rt.addTupleCount(2);
+#if wxCHECK_VERSION(3,1,2)
+ rt.addAtom("wxFONTWEIGHT_EXTRABOLD"); rt.addInt(wxFONTWEIGHT_EXTRABOLD);
+ rt.addTupleCount(2);
+#else
+ rt.addAtom("wxFONTWEIGHT_EXTRABOLD"); rt.addAtom("undefined");
+ rt.addTupleCount(2);
+#endif
+#if wxCHECK_VERSION(3,1,2)
+ rt.addAtom("wxFONTWEIGHT_EXTRAHEAVY"); rt.addInt(wxFONTWEIGHT_EXTRAHEAVY);
+ rt.addTupleCount(2);
+#else
+ rt.addAtom("wxFONTWEIGHT_EXTRAHEAVY"); rt.addAtom("undefined");
+ rt.addTupleCount(2);
+#endif
+#if wxCHECK_VERSION(3,1,2)
+ rt.addAtom("wxFONTWEIGHT_EXTRALIGHT"); rt.addInt(wxFONTWEIGHT_EXTRALIGHT);
+ rt.addTupleCount(2);
+#else
+ rt.addAtom("wxFONTWEIGHT_EXTRALIGHT"); rt.addAtom("undefined");
+ rt.addTupleCount(2);
+#endif
+#if wxCHECK_VERSION(3,1,2)
+ rt.addAtom("wxFONTWEIGHT_HEAVY"); rt.addInt(wxFONTWEIGHT_HEAVY);
+ rt.addTupleCount(2);
+#else
+ rt.addAtom("wxFONTWEIGHT_HEAVY"); rt.addAtom("undefined");
+ rt.addTupleCount(2);
+#endif
+#if wxCHECK_VERSION(3,1,2)
+ rt.addAtom("wxFONTWEIGHT_INVALID"); rt.addInt(wxFONTWEIGHT_INVALID);
+ rt.addTupleCount(2);
+#else
+ rt.addAtom("wxFONTWEIGHT_INVALID"); rt.addAtom("undefined");
+ rt.addTupleCount(2);
+#endif
+#if wxCHECK_VERSION(3,1,2)
+ rt.addAtom("wxFONTWEIGHT_MEDIUM"); rt.addInt(wxFONTWEIGHT_MEDIUM);
+ rt.addTupleCount(2);
+#else
+ rt.addAtom("wxFONTWEIGHT_MEDIUM"); rt.addAtom("undefined");
+ rt.addTupleCount(2);
+#endif
+#if wxCHECK_VERSION(3,1,2)
+ rt.addAtom("wxFONTWEIGHT_SEMIBOLD"); rt.addInt(wxFONTWEIGHT_SEMIBOLD);
+ rt.addTupleCount(2);
+#else
+ rt.addAtom("wxFONTWEIGHT_SEMIBOLD"); rt.addAtom("undefined");
+ rt.addTupleCount(2);
+#endif
+#if wxCHECK_VERSION(3,1,2)
+ rt.addAtom("wxFONTWEIGHT_THIN"); rt.addInt(wxFONTWEIGHT_THIN);
+ rt.addTupleCount(2);
+#else
+ rt.addAtom("wxFONTWEIGHT_THIN"); rt.addAtom("undefined");
+ rt.addTupleCount(2);
+#endif
    rt.addAtom("wxGREEN"); rt.add(*(wxGREEN));
    rt.addTupleCount(2);
    rt.addAtom("wxGREEN_BRUSH"); rt.addRef(getRef((void *)wxGREEN_BRUSH,memenv),"wxBrush");
@@ -723,7 +787,7 @@ void WxeApp::init_nonconsts(wxeMemEnv *memenv, ErlDrvTermData caller) {
  rt.addAtom("wx_GL_COMPAT_PROFILE"); rt.addAtom("undefined");
  rt.addTupleCount(2);
 #endif
- rt.endList(309);
+ rt.endList(321);
  rt.addTupleCount(2);
   rt.send();
 }
diff --git a/lib/wx/c_src/gen/wxe_macros.h b/lib/wx/c_src/gen/wxe_macros.h
index 4c8e52def2..c23e8a83bd 100644
--- a/lib/wx/c_src/gen/wxe_macros.h
+++ b/lib/wx/c_src/gen/wxe_macros.h
@@ -1,7 +1,7 @@
 /*
  * %CopyrightBegin%
  *
- * Copyright Ericsson AB 2008-2017. All Rights Reserved.
+ * Copyright Ericsson AB 2008-2018. All Rights Reserved.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -35,6 +35,7 @@
 #include <wx/fontdlg.h>
 #include <wx/progdlg.h>
 #include <wx/printdlg.h>
+#include <wx/display.h>
 #include <wx/dcbuffer.h>
 #include <wx/dcmirror.h>
 #include <wx/glcanvas.h>
@@ -46,6 +47,7 @@
 #include <wx/sashwin.h>
 #include <wx/laywin.h>
 #include <wx/graphics.h>
+#include <wx/dcgraph.h>
 #include <wx/aui/aui.h>
 #include <wx/datectrl.h>
 #include <wx/filepicker.h>
@@ -3426,5 +3428,21 @@
 #define wxDropFilesEvent_GetPosition 3597
 #define wxDropFilesEvent_GetNumberOfFiles 3598
 #define wxDropFilesEvent_GetFiles 3599
+#define wxDisplay_new 3600
+#define wxDisplay_destruct 3601
+#define wxDisplay_IsOk 3602
+#define wxDisplay_GetClientArea 3603
+#define wxDisplay_GetGeometry 3604
+#define wxDisplay_GetName 3605
+#define wxDisplay_IsPrimary 3606
+#define wxDisplay_GetCount 3607
+#define wxDisplay_GetFromPoint 3608
+#define wxDisplay_GetFromWindow 3609
+#define wxDisplay_GetPPI 3610
+#define wxGCDC_new_1 3611
+#define wxGCDC_new_0 3612
+#define wxGCDC_destruct 3613
+#define wxGCDC_GetGraphicsContext 3614
+#define wxGCDC_SetGraphicsContext 3615
 
 
diff --git a/lib/wx/c_src/wxe_impl.cpp b/lib/wx/c_src/wxe_impl.cpp
index bd22502d00..43b5476073 100644
--- a/lib/wx/c_src/wxe_impl.cpp
+++ b/lib/wx/c_src/wxe_impl.cpp
@@ -267,7 +267,7 @@ int WxeApp::dispatch_cmds()
   return more;
 }
 
-#define BREAK_BATCH 10000
+#define CHECK_EVENTS 10000
 
 int WxeApp::dispatch(wxeFifo * batch)
 {
@@ -278,13 +278,14 @@ int WxeApp::dispatch(wxeFifo * batch)
   erl_drv_mutex_lock(wxe_batch_locker_m);
   while(true) {
     while((event = batch->Get()) != NULL) {
+      wait += 1;
       erl_drv_mutex_unlock(wxe_batch_locker_m);
       switch(event->op) {
       case WXE_BATCH_END:
 	if(blevel>0) {
           blevel--;
           if(blevel==0)
-            wait += BREAK_BATCH/4;
+            wait += CHECK_EVENTS/4;
         }
 	break;
       case WXE_BATCH_BEGIN:
@@ -314,21 +315,18 @@ int WxeApp::dispatch(wxeFifo * batch)
 	break;
       }
       event->Delete();
+      if(wait > CHECK_EVENTS)
+        return 1; // Let wx check for events
       erl_drv_mutex_lock(wxe_batch_locker_m);
       batch->Cleanup();
     }
-    if(blevel <= 0 || wait >= BREAK_BATCH) {
+    if(blevel <= 0) {
       erl_drv_mutex_unlock(wxe_batch_locker_m);
-      if(blevel > 0) {
-        return 1; // We are still in a batch but we can let wx check for events
-      } else {
-        return 0;
-      }
+      return 0;
     }
     // sleep until something happens
     // fprintf(stderr, "%s:%d sleep %d %d %d\r\n", __FILE__, __LINE__, batch->m_n, blevel, wait);fflush(stderr);
     wxe_needs_signal = 1;
-    wait += 1;
     while(batch->m_n == 0) {
       erl_drv_cond_wait(wxe_batch_locker_c, wxe_batch_locker_m);
     }
diff --git a/lib/wx/c_src/wxe_ps_init.c b/lib/wx/c_src/wxe_ps_init.c
index 4b3b47a80b..62c7c51c13 100644
--- a/lib/wx/c_src/wxe_ps_init.c
+++ b/lib/wx/c_src/wxe_ps_init.c
@@ -64,6 +64,10 @@ void * wxe_ps_init2() {
    size_t app_len = 127;
    char app_title_buf[128];
    char * app_title;
+   size_t app_icon_len = 1023;
+   char app_icon_buf[1024];
+   char * app_icon;
+
    // Setup and enable gui
    pool = [[NSAutoreleasePool alloc] init];
 
@@ -78,9 +82,15 @@ void * wxe_ps_init2() {
       if(!GetCurrentProcess(&psn)) {
       	 CPSSetProcessName(&psn, app_title?app_title:"Erlang");
       }
-      // Load and set icon
+      // Enable setting custom application icon for Mac OS X
+      res = erl_drv_getenv("WX_APP_ICON", app_icon_buf, &app_icon_len);
       NSMutableString *file = [[NSMutableString alloc] init];
-      [file appendFormat:@"%s/%s", erl_wx_privdir, "erlang-logo64.png"];
+      if (res >= 0) {
+          [file appendFormat:@"%s", app_icon_buf];
+      } else {
+          [file appendFormat:@"%s/%s", erl_wx_privdir, "erlang-logo128.png"];
+      }
+      // Load and set icon
       NSImage *icon = [[NSImage alloc] initWithContentsOfFile: file];
       [NSApp setApplicationIconImage: icon];
    };
diff --git a/lib/wx/doc/overview.edoc b/lib/wx/doc/overview.edoc
index 054016f515..843a9c1320 100644
--- a/lib/wx/doc/overview.edoc
+++ b/lib/wx/doc/overview.edoc
@@ -218,7 +218,7 @@ the <em>fun</em> returns.
 
 The callbacks are always invoked by another process and have
 exclusive usage of the GUI when invoked. This means that a callback <em>fun</em>
-can not use the process dictionary and should not make calls to other
+cannot use the process dictionary and should not make calls to other
 processes.  Calls to another process inside a callback <em>fun</em> may cause a
 deadlock if the other process is waiting on completion of his call to
 the GUI.
diff --git a/lib/wx/doc/src/notes.xml b/lib/wx/doc/src/notes.xml
index 1061e73138..33d02e22ba 100644
--- a/lib/wx/doc/src/notes.xml
+++ b/lib/wx/doc/src/notes.xml
@@ -32,6 +32,25 @@
   <p>This document describes the changes made to the wxErlang
     application.</p>
 
+<section><title>Wx 1.8.7</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Improved support for wxWidgets 3.1.3 which have changed
+	    <c>wxFONTWEIGTH</c>, also added <c>wxGCDC</c> and
+	    <c>wxDisplay</c> modules.</p>
+          <p>
+	    Fixed a crash on Mojave and check for events more often.</p>
+          <p>
+	    Own Id: OTP-15587</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Wx 1.8.6</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
diff --git a/lib/wx/examples/demo/ex_graphicsContext.erl b/lib/wx/examples/demo/ex_graphicsContext.erl
index 1193578037..1e6ffce18d 100644
--- a/lib/wx/examples/demo/ex_graphicsContext.erl
+++ b/lib/wx/examples/demo/ex_graphicsContext.erl
@@ -74,7 +74,7 @@ do_init(Config) ->
 		   pen = Pen, brush = Brush, font = Font}}.
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%% Sync events i.e. from callbacks must return ok, it can not return a new state.
+%% Sync events i.e. from callbacks must return ok, it cannot return a new state.
 %% Do the redrawing here.
 handle_sync_event(#wx{event = #wxPaint{}},_,
 		  #state{win=Win, pen = Pen, brush = Brush, font = Font}) ->
diff --git a/lib/wx/include/wx.hrl b/lib/wx/include/wx.hrl
index 23f3b95403..2c145595ee 100644
--- a/lib/wx/include/wx.hrl
+++ b/lib/wx/include/wx.hrl
@@ -398,6 +398,14 @@
 -define(wxCYAN,  wxe_util:get_const(wxCYAN)).
 -define(wxCYAN_BRUSH,  wxe_util:get_const(wxCYAN_BRUSH)).
 -define(wxCYAN_PEN,  wxe_util:get_const(wxCYAN_PEN)).
+-define(wxFONTWEIGHT_EXTRABOLD,  wxe_util:get_const(wxFONTWEIGHT_EXTRABOLD)).
+-define(wxFONTWEIGHT_EXTRAHEAVY,  wxe_util:get_const(wxFONTWEIGHT_EXTRAHEAVY)).
+-define(wxFONTWEIGHT_EXTRALIGHT,  wxe_util:get_const(wxFONTWEIGHT_EXTRALIGHT)).
+-define(wxFONTWEIGHT_HEAVY,  wxe_util:get_const(wxFONTWEIGHT_HEAVY)).
+-define(wxFONTWEIGHT_INVALID,  wxe_util:get_const(wxFONTWEIGHT_INVALID)).
+-define(wxFONTWEIGHT_MEDIUM,  wxe_util:get_const(wxFONTWEIGHT_MEDIUM)).
+-define(wxFONTWEIGHT_SEMIBOLD,  wxe_util:get_const(wxFONTWEIGHT_SEMIBOLD)).
+-define(wxFONTWEIGHT_THIN,  wxe_util:get_const(wxFONTWEIGHT_THIN)).
 -define(wxGREEN,  wxe_util:get_const(wxGREEN)).
 -define(wxGREEN_BRUSH,  wxe_util:get_const(wxGREEN_BRUSH)).
 -define(wxGREEN_PEN,  wxe_util:get_const(wxGREEN_PEN)).
@@ -1685,10 +1693,10 @@
 -define(wxFONTSTYLE_SLANT, ?wxSLANT).
 -define(wxFONTSTYLE_MAX, (?wxSLANT+1)).
 % From "font.h": wxFontWeight
--define(wxFONTWEIGHT_NORMAL, ?wxNORMAL).
--define(wxFONTWEIGHT_LIGHT, ?wxLIGHT).
--define(wxFONTWEIGHT_BOLD, ?wxBOLD).
--define(wxFONTWEIGHT_MAX, (?wxBOLD+1)).
+-define(wxFONTWEIGHT_NORMAL, wxe_util:get_const(wxFONTWEIGHT_NORMAL)).
+-define(wxFONTWEIGHT_LIGHT, wxe_util:get_const(wxFONTWEIGHT_LIGHT)).
+-define(wxFONTWEIGHT_BOLD, wxe_util:get_const(wxFONTWEIGHT_BOLD)).
+-define(wxFONTWEIGHT_MAX, wxe_util:get_const(wxFONTWEIGHT_MAX)).
 % From "fontenc.h": wxFontEncoding
 -define(wxFONTENCODING_SYSTEM, -1).
 -define(wxFONTENCODING_DEFAULT, 0).
diff --git a/lib/wx/src/Makefile b/lib/wx/src/Makefile
index 21b45af2c4..52f4008e0a 100644
--- a/lib/wx/src/Makefile
+++ b/lib/wx/src/Makefile
@@ -111,10 +111,10 @@ $(APPUP_TARGET): $(APPUP_SRC) ../vsn.mk Makefile
 
 # Rules
 $(EBIN)/%.beam: $(ESRC)/%.erl $(HEADER_FILES)
-	$(V_ERLC) -W -bbeam $(ERL_FLAGS) $(ERL_COMPILE_FLAGS) -o$(EBIN) $<
+	$(V_ERLC) -W -bbeam $(ERL_COMPILE_FLAGS) -o$(EBIN) $<
 
 $(EBIN)/%.beam: $(EGEN)/%.erl $(HEADER_FILES)
-	$(V_ERLC) -W -bbeam $(ERL_FLAGS) $(ERL_COMPILE_FLAGS) -o$(EBIN) $<
+	$(V_ERLC) -W -bbeam $(ERL_COMPILE_FLAGS) -o$(EBIN) $<
 
 # ----------------------------------------------------
 # Release Target
diff --git a/lib/wx/src/gen/wxDisplay.erl b/lib/wx/src/gen/wxDisplay.erl
new file mode 100644
index 0000000000..b6a2bf22ac
--- /dev/null
+++ b/lib/wx/src/gen/wxDisplay.erl
@@ -0,0 +1,131 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2008-2018. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%% This file is generated DO NOT EDIT
+
+%% @doc See external documentation: <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxdisplay.html">wxDisplay</a>.
+%% @type wxDisplay().  An object reference, The representation is internal
+%% and can be changed without notice. It can't be used for comparsion
+%% stored on disc or distributed for use on other nodes.
+
+-module(wxDisplay).
+-include("wxe.hrl").
+-export([destroy/1,getClientArea/1,getCount/0,getFromPoint/1,getFromWindow/1,
+  getGeometry/1,getName/1,getPPI/1,isOk/1,isPrimary/1,new/0,new/1]).
+
+%% inherited exports
+-export([parent_class/1]).
+
+-export_type([wxDisplay/0]).
+%% @hidden
+parent_class(_Class) -> erlang:error({badtype, ?MODULE}).
+
+-type wxDisplay() :: wx:wx_object().
+%% @equiv new([])
+-spec new() -> wxDisplay().
+
+new() ->
+  new([]).
+
+%% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxdisplay.html#wxdisplaywxdisplay">external documentation</a>.
+-spec new([Option]) -> wxDisplay() when
+	Option :: {'n', integer()}.
+new(Options)
+ when is_list(Options) ->
+  MOpts = fun({n, N}, Acc) -> [<<1:32/?UI,N:32/?UI>>|Acc];
+          (BadOpt, _) -> erlang:error({badoption, BadOpt}) end,
+  BinOpt = list_to_binary(lists:foldl(MOpts, [<<0:32>>], Options)),
+  wxe_util:construct(?wxDisplay_new,
+  <<BinOpt/binary>>).
+
+%% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxdisplay.html#wxdisplayisok">external documentation</a>.
+-spec isOk(This) -> boolean() when
+	This::wxDisplay().
+isOk(#wx_ref{type=ThisT,ref=ThisRef}) ->
+  ?CLASS(ThisT,wxDisplay),
+  wxe_util:call(?wxDisplay_IsOk,
+  <<ThisRef:32/?UI>>).
+
+%% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxdisplay.html#wxdisplaygetclientarea">external documentation</a>.
+-spec getClientArea(This) -> {X::integer(), Y::integer(), W::integer(), H::integer()} when
+	This::wxDisplay().
+getClientArea(#wx_ref{type=ThisT,ref=ThisRef}) ->
+  ?CLASS(ThisT,wxDisplay),
+  wxe_util:call(?wxDisplay_GetClientArea,
+  <<ThisRef:32/?UI>>).
+
+%% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxdisplay.html#wxdisplaygetgeometry">external documentation</a>.
+-spec getGeometry(This) -> {X::integer(), Y::integer(), W::integer(), H::integer()} when
+	This::wxDisplay().
+getGeometry(#wx_ref{type=ThisT,ref=ThisRef}) ->
+  ?CLASS(ThisT,wxDisplay),
+  wxe_util:call(?wxDisplay_GetGeometry,
+  <<ThisRef:32/?UI>>).
+
+%% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxdisplay.html#wxdisplaygetname">external documentation</a>.
+-spec getName(This) -> unicode:charlist() when
+	This::wxDisplay().
+getName(#wx_ref{type=ThisT,ref=ThisRef}) ->
+  ?CLASS(ThisT,wxDisplay),
+  wxe_util:call(?wxDisplay_GetName,
+  <<ThisRef:32/?UI>>).
+
+%% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxdisplay.html#wxdisplayisprimary">external documentation</a>.
+-spec isPrimary(This) -> boolean() when
+	This::wxDisplay().
+isPrimary(#wx_ref{type=ThisT,ref=ThisRef}) ->
+  ?CLASS(ThisT,wxDisplay),
+  wxe_util:call(?wxDisplay_IsPrimary,
+  <<ThisRef:32/?UI>>).
+
+%% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxdisplay.html#wxdisplaygetcount">external documentation</a>.
+-spec getCount() -> integer().
+getCount() ->
+  wxe_util:call(?wxDisplay_GetCount,
+  <<>>).
+
+%% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxdisplay.html#wxdisplaygetfrompoint">external documentation</a>.
+-spec getFromPoint(Pt) -> integer() when
+	Pt::{X::integer(), Y::integer()}.
+getFromPoint({PtX,PtY})
+ when is_integer(PtX),is_integer(PtY) ->
+  wxe_util:call(?wxDisplay_GetFromPoint,
+  <<PtX:32/?UI,PtY:32/?UI>>).
+
+%% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxdisplay.html#wxdisplaygetfromwindow">external documentation</a>.
+-spec getFromWindow(Window) -> integer() when
+	Window::wxWindow:wxWindow().
+getFromWindow(#wx_ref{type=WindowT,ref=WindowRef}) ->
+  ?CLASS(WindowT,wxWindow),
+  wxe_util:call(?wxDisplay_GetFromWindow,
+  <<WindowRef:32/?UI>>).
+
+%% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxdisplay.html#wxdisplaygetppi">external documentation</a>.
+-spec getPPI(This) -> {W::integer(), H::integer()} when
+	This::wxDisplay().
+getPPI(#wx_ref{type=ThisT,ref=ThisRef}) ->
+  ?CLASS(ThisT,wxDisplay),
+  wxe_util:call(?wxDisplay_GetPPI,
+  <<ThisRef:32/?UI>>).
+
+%% @doc Destroys this object, do not use object again
+-spec destroy(This::wxDisplay()) -> 'ok'.
+destroy(Obj=#wx_ref{type=Type}) ->
+  ?CLASS(Type,wxDisplay),
+  wxe_util:destroy(?wxDisplay_destruct,Obj),
+  ok.
diff --git a/lib/wx/src/gen/wxGCDC.erl b/lib/wx/src/gen/wxGCDC.erl
new file mode 100644
index 0000000000..467013b14e
--- /dev/null
+++ b/lib/wx/src/gen/wxGCDC.erl
@@ -0,0 +1,287 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2008-2018. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%% This file is generated DO NOT EDIT
+
+%% @doc See external documentation: <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxgcdc.html">wxGCDC</a>.
+%% <p>This class is derived (and can use functions) from:
+%% <br />{@link wxDC}
+%% </p>
+%% @type wxGCDC().  An object reference, The representation is internal
+%% and can be changed without notice. It can't be used for comparsion
+%% stored on disc or distributed for use on other nodes.
+
+-module(wxGCDC).
+-include("wxe.hrl").
+-export([destroy/1,getGraphicsContext/1,new/0,new/1,setGraphicsContext/2]).
+
+%% inherited exports
+-export([blit/5,blit/6,calcBoundingBox/3,clear/1,computeScaleAndOrigin/1,crossHair/2,
+  destroyClippingRegion/1,deviceToLogicalX/2,deviceToLogicalXRel/2,
+  deviceToLogicalY/2,deviceToLogicalYRel/2,drawArc/4,drawBitmap/3,drawBitmap/4,
+  drawCheckMark/2,drawCircle/3,drawEllipse/2,drawEllipse/3,drawEllipticArc/5,
+  drawIcon/3,drawLabel/3,drawLabel/4,drawLine/3,drawLines/2,drawLines/3,
+  drawPoint/2,drawPolygon/2,drawPolygon/3,drawRectangle/2,drawRectangle/3,
+  drawRotatedText/4,drawRoundedRectangle/3,drawRoundedRectangle/4,
+  drawText/3,endDoc/1,endPage/1,floodFill/3,floodFill/4,getBackground/1,
+  getBackgroundMode/1,getBrush/1,getCharHeight/1,getCharWidth/1,getClippingBox/1,
+  getFont/1,getLayoutDirection/1,getLogicalFunction/1,getMapMode/1,
+  getMultiLineTextExtent/2,getMultiLineTextExtent/3,getPPI/1,getPartialTextExtents/2,
+  getPen/1,getPixel/2,getSize/1,getSizeMM/1,getTextBackground/1,getTextExtent/2,
+  getTextExtent/3,getTextForeground/1,getUserScale/1,gradientFillConcentric/4,
+  gradientFillConcentric/5,gradientFillLinear/4,gradientFillLinear/5,
+  isOk/1,logicalToDeviceX/2,logicalToDeviceXRel/2,logicalToDeviceY/2,
+  logicalToDeviceYRel/2,maxX/1,maxY/1,minX/1,minY/1,parent_class/1,resetBoundingBox/1,
+  setAxisOrientation/3,setBackground/2,setBackgroundMode/2,setBrush/2,
+  setClippingRegion/2,setClippingRegion/3,setDeviceOrigin/3,setFont/2,
+  setLayoutDirection/2,setLogicalFunction/2,setMapMode/2,setPalette/2,
+  setPen/2,setTextBackground/2,setTextForeground/2,setUserScale/3,startDoc/2,
+  startPage/1]).
+
+-export_type([wxGCDC/0]).
+-compile([{nowarn_deprecated_function, {wxDC,computeScaleAndOrigin,1}}]).
+
+%% @hidden
+parent_class(wxDC) -> true;
+parent_class(_Class) -> erlang:error({badtype, ?MODULE}).
+
+-type wxGCDC() :: wx:wx_object().
+%% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxgcdc.html#wxgcdcwxgcdc">external documentation</a>.
+-spec new() -> wxGCDC().
+new() ->
+  wxe_util:construct(?wxGCDC_new_0,
+  <<>>).
+
+%% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxgcdc.html#wxgcdcwxgcdc">external documentation</a>.
+-spec new(Dc) -> wxGCDC() when
+	Dc::wxWindowDC:wxWindowDC().
+new(#wx_ref{type=DcT,ref=DcRef}) ->
+  ?CLASS(DcT,wxWindowDC),
+  wxe_util:construct(?wxGCDC_new_1,
+  <<DcRef:32/?UI>>).
+
+%% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxgcdc.html#wxgcdcgetgraphicscontext">external documentation</a>.
+-spec getGraphicsContext(This) -> wxGraphicsContext:wxGraphicsContext() when
+	This::wxGCDC().
+getGraphicsContext(#wx_ref{type=ThisT,ref=ThisRef}) ->
+  ?CLASS(ThisT,wxGCDC),
+  wxe_util:call(?wxGCDC_GetGraphicsContext,
+  <<ThisRef:32/?UI>>).
+
+%% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxgcdc.html#wxgcdcsetgraphicscontext">external documentation</a>.
+-spec setGraphicsContext(This, Ctx) -> 'ok' when
+	This::wxGCDC(), Ctx::wxGraphicsContext:wxGraphicsContext().
+setGraphicsContext(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=CtxT,ref=CtxRef}) ->
+  ?CLASS(ThisT,wxGCDC),
+  ?CLASS(CtxT,wxGraphicsContext),
+  wxe_util:cast(?wxGCDC_SetGraphicsContext,
+  <<ThisRef:32/?UI,CtxRef:32/?UI>>).
+
+%% @doc Destroys this object, do not use object again
+-spec destroy(This::wxGCDC()) -> 'ok'.
+destroy(Obj=#wx_ref{type=Type}) ->
+  ?CLASS(Type,wxGCDC),
+  wxe_util:destroy(?DESTROY_OBJECT,Obj),
+  ok.
+ %% From wxDC
+%% @hidden
+startPage(This) -> wxDC:startPage(This).
+%% @hidden
+startDoc(This,Message) -> wxDC:startDoc(This,Message).
+%% @hidden
+setUserScale(This,X,Y) -> wxDC:setUserScale(This,X,Y).
+%% @hidden
+setTextForeground(This,Colour) -> wxDC:setTextForeground(This,Colour).
+%% @hidden
+setTextBackground(This,Colour) -> wxDC:setTextBackground(This,Colour).
+%% @hidden
+setPen(This,Pen) -> wxDC:setPen(This,Pen).
+%% @hidden
+setPalette(This,Palette) -> wxDC:setPalette(This,Palette).
+%% @hidden
+setMapMode(This,Mode) -> wxDC:setMapMode(This,Mode).
+%% @hidden
+setLogicalFunction(This,Function) -> wxDC:setLogicalFunction(This,Function).
+%% @hidden
+setLayoutDirection(This,Dir) -> wxDC:setLayoutDirection(This,Dir).
+%% @hidden
+setFont(This,Font) -> wxDC:setFont(This,Font).
+%% @hidden
+setDeviceOrigin(This,X,Y) -> wxDC:setDeviceOrigin(This,X,Y).
+%% @hidden
+setClippingRegion(This,Pt,Sz) -> wxDC:setClippingRegion(This,Pt,Sz).
+%% @hidden
+setClippingRegion(This,Region) -> wxDC:setClippingRegion(This,Region).
+%% @hidden
+setBrush(This,Brush) -> wxDC:setBrush(This,Brush).
+%% @hidden
+setBackgroundMode(This,Mode) -> wxDC:setBackgroundMode(This,Mode).
+%% @hidden
+setBackground(This,Brush) -> wxDC:setBackground(This,Brush).
+%% @hidden
+setAxisOrientation(This,XLeftRight,YBottomUp) -> wxDC:setAxisOrientation(This,XLeftRight,YBottomUp).
+%% @hidden
+resetBoundingBox(This) -> wxDC:resetBoundingBox(This).
+%% @hidden
+isOk(This) -> wxDC:isOk(This).
+%% @hidden
+minY(This) -> wxDC:minY(This).
+%% @hidden
+minX(This) -> wxDC:minX(This).
+%% @hidden
+maxY(This) -> wxDC:maxY(This).
+%% @hidden
+maxX(This) -> wxDC:maxX(This).
+%% @hidden
+logicalToDeviceYRel(This,Y) -> wxDC:logicalToDeviceYRel(This,Y).
+%% @hidden
+logicalToDeviceY(This,Y) -> wxDC:logicalToDeviceY(This,Y).
+%% @hidden
+logicalToDeviceXRel(This,X) -> wxDC:logicalToDeviceXRel(This,X).
+%% @hidden
+logicalToDeviceX(This,X) -> wxDC:logicalToDeviceX(This,X).
+%% @hidden
+gradientFillLinear(This,Rect,InitialColour,DestColour, Options) -> wxDC:gradientFillLinear(This,Rect,InitialColour,DestColour, Options).
+%% @hidden
+gradientFillLinear(This,Rect,InitialColour,DestColour) -> wxDC:gradientFillLinear(This,Rect,InitialColour,DestColour).
+%% @hidden
+gradientFillConcentric(This,Rect,InitialColour,DestColour,CircleCenter) -> wxDC:gradientFillConcentric(This,Rect,InitialColour,DestColour,CircleCenter).
+%% @hidden
+gradientFillConcentric(This,Rect,InitialColour,DestColour) -> wxDC:gradientFillConcentric(This,Rect,InitialColour,DestColour).
+%% @hidden
+getUserScale(This) -> wxDC:getUserScale(This).
+%% @hidden
+getTextForeground(This) -> wxDC:getTextForeground(This).
+%% @hidden
+getTextExtent(This,String, Options) -> wxDC:getTextExtent(This,String, Options).
+%% @hidden
+getTextExtent(This,String) -> wxDC:getTextExtent(This,String).
+%% @hidden
+getTextBackground(This) -> wxDC:getTextBackground(This).
+%% @hidden
+getSizeMM(This) -> wxDC:getSizeMM(This).
+%% @hidden
+getSize(This) -> wxDC:getSize(This).
+%% @hidden
+getPPI(This) -> wxDC:getPPI(This).
+%% @hidden
+getPixel(This,Pt) -> wxDC:getPixel(This,Pt).
+%% @hidden
+getPen(This) -> wxDC:getPen(This).
+%% @hidden
+getPartialTextExtents(This,Text) -> wxDC:getPartialTextExtents(This,Text).
+%% @hidden
+getMultiLineTextExtent(This,String, Options) -> wxDC:getMultiLineTextExtent(This,String, Options).
+%% @hidden
+getMultiLineTextExtent(This,String) -> wxDC:getMultiLineTextExtent(This,String).
+%% @hidden
+getMapMode(This) -> wxDC:getMapMode(This).
+%% @hidden
+getLogicalFunction(This) -> wxDC:getLogicalFunction(This).
+%% @hidden
+getLayoutDirection(This) -> wxDC:getLayoutDirection(This).
+%% @hidden
+getFont(This) -> wxDC:getFont(This).
+%% @hidden
+getClippingBox(This) -> wxDC:getClippingBox(This).
+%% @hidden
+getCharWidth(This) -> wxDC:getCharWidth(This).
+%% @hidden
+getCharHeight(This) -> wxDC:getCharHeight(This).
+%% @hidden
+getBrush(This) -> wxDC:getBrush(This).
+%% @hidden
+getBackgroundMode(This) -> wxDC:getBackgroundMode(This).
+%% @hidden
+getBackground(This) -> wxDC:getBackground(This).
+%% @hidden
+floodFill(This,Pt,Col, Options) -> wxDC:floodFill(This,Pt,Col, Options).
+%% @hidden
+floodFill(This,Pt,Col) -> wxDC:floodFill(This,Pt,Col).
+%% @hidden
+endPage(This) -> wxDC:endPage(This).
+%% @hidden
+endDoc(This) -> wxDC:endDoc(This).
+%% @hidden
+drawText(This,Text,Pt) -> wxDC:drawText(This,Text,Pt).
+%% @hidden
+drawRoundedRectangle(This,Pt,Sz,Radius) -> wxDC:drawRoundedRectangle(This,Pt,Sz,Radius).
+%% @hidden
+drawRoundedRectangle(This,R,Radius) -> wxDC:drawRoundedRectangle(This,R,Radius).
+%% @hidden
+drawRotatedText(This,Text,Pt,Angle) -> wxDC:drawRotatedText(This,Text,Pt,Angle).
+%% @hidden
+drawRectangle(This,Pt,Sz) -> wxDC:drawRectangle(This,Pt,Sz).
+%% @hidden
+drawRectangle(This,Rect) -> wxDC:drawRectangle(This,Rect).
+%% @hidden
+drawPoint(This,Pt) -> wxDC:drawPoint(This,Pt).
+%% @hidden
+drawPolygon(This,Points, Options) -> wxDC:drawPolygon(This,Points, Options).
+%% @hidden
+drawPolygon(This,Points) -> wxDC:drawPolygon(This,Points).
+%% @hidden
+drawLines(This,Points, Options) -> wxDC:drawLines(This,Points, Options).
+%% @hidden
+drawLines(This,Points) -> wxDC:drawLines(This,Points).
+%% @hidden
+drawLine(This,Pt1,Pt2) -> wxDC:drawLine(This,Pt1,Pt2).
+%% @hidden
+drawLabel(This,Text,Rect, Options) -> wxDC:drawLabel(This,Text,Rect, Options).
+%% @hidden
+drawLabel(This,Text,Rect) -> wxDC:drawLabel(This,Text,Rect).
+%% @hidden
+drawIcon(This,Icon,Pt) -> wxDC:drawIcon(This,Icon,Pt).
+%% @hidden
+drawEllipticArc(This,Pt,Sz,Sa,Ea) -> wxDC:drawEllipticArc(This,Pt,Sz,Sa,Ea).
+%% @hidden
+drawEllipse(This,Pt,Sz) -> wxDC:drawEllipse(This,Pt,Sz).
+%% @hidden
+drawEllipse(This,Rect) -> wxDC:drawEllipse(This,Rect).
+%% @hidden
+drawCircle(This,Pt,Radius) -> wxDC:drawCircle(This,Pt,Radius).
+%% @hidden
+drawCheckMark(This,Rect) -> wxDC:drawCheckMark(This,Rect).
+%% @hidden
+drawBitmap(This,Bmp,Pt, Options) -> wxDC:drawBitmap(This,Bmp,Pt, Options).
+%% @hidden
+drawBitmap(This,Bmp,Pt) -> wxDC:drawBitmap(This,Bmp,Pt).
+%% @hidden
+drawArc(This,Pt1,Pt2,Centre) -> wxDC:drawArc(This,Pt1,Pt2,Centre).
+%% @hidden
+deviceToLogicalYRel(This,Y) -> wxDC:deviceToLogicalYRel(This,Y).
+%% @hidden
+deviceToLogicalY(This,Y) -> wxDC:deviceToLogicalY(This,Y).
+%% @hidden
+deviceToLogicalXRel(This,X) -> wxDC:deviceToLogicalXRel(This,X).
+%% @hidden
+deviceToLogicalX(This,X) -> wxDC:deviceToLogicalX(This,X).
+%% @hidden
+destroyClippingRegion(This) -> wxDC:destroyClippingRegion(This).
+%% @hidden
+crossHair(This,Pt) -> wxDC:crossHair(This,Pt).
+%% @hidden
+computeScaleAndOrigin(This) -> wxDC:computeScaleAndOrigin(This).
+%% @hidden
+clear(This) -> wxDC:clear(This).
+%% @hidden
+calcBoundingBox(This,X,Y) -> wxDC:calcBoundingBox(This,X,Y).
+%% @hidden
+blit(This,DestPt,Sz,Source,SrcPt, Options) -> wxDC:blit(This,DestPt,Sz,Source,SrcPt, Options).
+%% @hidden
+blit(This,DestPt,Sz,Source,SrcPt) -> wxDC:blit(This,DestPt,Sz,Source,SrcPt).
diff --git a/lib/wx/src/gen/wxe_debug.hrl b/lib/wx/src/gen/wxe_debug.hrl
index 533f9f2df0..b64a1b4c61 100644
--- a/lib/wx/src/gen/wxe_debug.hrl
+++ b/lib/wx/src/gen/wxe_debug.hrl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2008-2017. All Rights Reserved.
+%% Copyright Ericsson AB 2008-2018. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -3377,6 +3377,22 @@ wxdebug_table() ->
  {3597, {wxDropFilesEvent, getPosition, 0}},
  {3598, {wxDropFilesEvent, getNumberOfFiles, 0}},
  {3599, {wxDropFilesEvent, getFiles, 0}},
+ {3600, {wxDisplay, new, 1}},
+ {3601, {wxDisplay, destruct, 0}},
+ {3602, {wxDisplay, isOk, 0}},
+ {3603, {wxDisplay, getClientArea, 0}},
+ {3604, {wxDisplay, getGeometry, 0}},
+ {3605, {wxDisplay, getName, 0}},
+ {3606, {wxDisplay, isPrimary, 0}},
+ {3607, {wxDisplay, getCount, 0}},
+ {3608, {wxDisplay, getFromPoint, 1}},
+ {3609, {wxDisplay, getFromWindow, 1}},
+ {3610, {wxDisplay, getPPI, 0}},
+ {3611, {wxGCDC, new_1, 1}},
+ {3612, {wxGCDC, new_0, 0}},
+ {3613, {wxGCDC, destruct, 0}},
+ {3614, {wxGCDC, getGraphicsContext, 0}},
+ {3615, {wxGCDC, setGraphicsContext, 1}},
  {-1, {mod, func, -1}}
 ].
 
diff --git a/lib/wx/src/gen/wxe_funcs.hrl b/lib/wx/src/gen/wxe_funcs.hrl
index 14b5545676..030f7f117d 100644
--- a/lib/wx/src/gen/wxe_funcs.hrl
+++ b/lib/wx/src/gen/wxe_funcs.hrl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2008-2017. All Rights Reserved.
+%% Copyright Ericsson AB 2008-2018. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -3374,3 +3374,19 @@
 -define(wxDropFilesEvent_GetPosition, 3597).
 -define(wxDropFilesEvent_GetNumberOfFiles, 3598).
 -define(wxDropFilesEvent_GetFiles, 3599).
+-define(wxDisplay_new, 3600).
+-define(wxDisplay_destruct, 3601).
+-define(wxDisplay_IsOk, 3602).
+-define(wxDisplay_GetClientArea, 3603).
+-define(wxDisplay_GetGeometry, 3604).
+-define(wxDisplay_GetName, 3605).
+-define(wxDisplay_IsPrimary, 3606).
+-define(wxDisplay_GetCount, 3607).
+-define(wxDisplay_GetFromPoint, 3608).
+-define(wxDisplay_GetFromWindow, 3609).
+-define(wxDisplay_GetPPI, 3610).
+-define(wxGCDC_new_1, 3611).
+-define(wxGCDC_new_0, 3612).
+-define(wxGCDC_destruct, 3613).
+-define(wxGCDC_GetGraphicsContext, 3614).
+-define(wxGCDC_SetGraphicsContext, 3615).
diff --git a/lib/wx/test/wx_event_SUITE.erl b/lib/wx/test/wx_event_SUITE.erl
index 7ecd9b7283..1cc194d569 100644
--- a/lib/wx/test/wx_event_SUITE.erl
+++ b/lib/wx/test/wx_event_SUITE.erl
@@ -347,9 +347,9 @@ connect_in_callback(Config) ->
     %% such that new events are not fired until the previous
     %% callback have returned.
 
-    %% That means that a callback can not wait for other events
+    %% That means that a callback cannot wait for other events
     %% in receive since they will not come.
-    %% It also means that you can not attach a new callback directly from
+    %% It also means that you cannot attach a new callback directly from
     %% the callback since that callback will be removed when the temporary
     %% process that executes the outer callback (may) die(s) before the callback
     %% is invoked
diff --git a/lib/wx/vsn.mk b/lib/wx/vsn.mk
index d241a7a1b4..dac219fa98 100644
--- a/lib/wx/vsn.mk
+++ b/lib/wx/vsn.mk
@@ -1 +1 @@
-WX_VSN = 1.8.6
+WX_VSN = 1.8.7
diff --git a/lib/xmerl/doc/src/notes.xml b/lib/xmerl/doc/src/notes.xml
index a97036127e..d6b6dfdfb5 100644
--- a/lib/xmerl/doc/src/notes.xml
+++ b/lib/xmerl/doc/src/notes.xml
@@ -32,6 +32,43 @@
   <p>This document describes the changes made to the Xmerl application.</p>
 
 
+<section><title>Xmerl 1.3.20</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Handling of character references in attributes are fixed.</p>
+          <p>
+	    Own Id: OTP-15684 Aux Id: ERL-837 </p>
+        </item>
+        <item>
+          <p>
+	    Normalization of whitespace characters in attributes are
+	    fixed so it works when character references are used.</p>
+          <p>
+	    Own Id: OTP-15685 Aux Id: ERL-475 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>Xmerl 1.3.19</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p>The charset detection parsing crash in some cases when
+	    the XML directive is not syntactic correct.</p>
+          <p>
+	    Own Id: OTP-15492 Aux Id: ERIERL-283 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Xmerl 1.3.18</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
@@ -62,6 +99,21 @@
 
 </section>
 
+<section><title>Xmerl 1.3.16.1</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p>The charset detection parsing crash in some cases when
+	    the XML directive is not syntactic correct.</p>
+          <p>
+	    Own Id: OTP-15492 Aux Id: ERIERL-283 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Xmerl 1.3.16</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
@@ -1412,4 +1464,3 @@
     </section>
   </section>
 </chapter>
-
diff --git a/lib/xmerl/doc/src/xmerl_sax_parser.xml b/lib/xmerl/doc/src/xmerl_sax_parser.xml
index 8ea197e209..2390779028 100644
--- a/lib/xmerl/doc/src/xmerl_sax_parser.xml
+++ b/lib/xmerl/doc/src/xmerl_sax_parser.xml
@@ -31,7 +31,7 @@
     <rev></rev>
   </header>
 
-  <module>xmerl_sax_parser</module>
+  <module since="">xmerl_sax_parser</module>
   <modulesummary>XML SAX parser API</modulesummary>
 
   <description>
@@ -325,7 +325,7 @@
   <funcs>
 
     <func>
-      <name>file(Filename, Options) -> Result</name>
+      <name since="">file(Filename, Options) -> Result</name>
       <fsummary>Parse file containing an XML document.</fsummary>
       <type>
         <v>Filename = string()</v>
@@ -347,7 +347,7 @@
     </func>
 
     <func>
-      <name>stream(Xml, Options) -> Result</name>
+      <name since="">stream(Xml, Options) -> Result</name>
       <fsummary>Parse a stream containing an XML document.</fsummary>
       <type>
         <v>Xml = unicode_binary() | latin1_binary() | [unicode_char()]</v>
@@ -381,7 +381,7 @@
   <funcs>
 
     <func>
-      <name>ContinuationFun(State) -> {NewBytes, NewState}</name>
+      <name since="">ContinuationFun(State) -> {NewBytes, NewState}</name>
       <fsummary>Continuation call back function.</fsummary>
       <type>
         <v>State = NewState = term()</v>
@@ -402,7 +402,7 @@
     </func>
 
     <func>
-      <name>EventFun(Event, Location, State) -> NewState</name>
+      <name since="">EventFun(Event, Location, State) -> NewState</name>
       <fsummary>Event call back function.</fsummary>
       <type>
         <v>Event = event()</v>
diff --git a/lib/xmerl/src/xmerl_sax_parser.erl b/lib/xmerl/src/xmerl_sax_parser.erl
index e383c4c349..fe836fd8cd 100644
--- a/lib/xmerl/src/xmerl_sax_parser.erl
+++ b/lib/xmerl/src/xmerl_sax_parser.erl
@@ -1,8 +1,8 @@
 %%--------------------------------------------------------------------
 %% %CopyrightBegin%
-%% 
-%% Copyright Ericsson AB 2008-2017. All Rights Reserved.
-%% 
+%%
+%% Copyright Ericsson AB 2008-2018. All Rights Reserved.
+%%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
 %% You may obtain a copy of the License at
@@ -14,13 +14,13 @@
 %% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 %% See the License for the specific language governing permissions and
 %% limitations under the License.
-%% 
+%%
 %% %CopyrightEnd%
 %%----------------------------------------------------------------------
 %% File    : xmerl_sax_parser.erl
 %% Description : XML SAX parse API module.
 %%
-%% Created :  4 Jun 2008 
+%% Created :  4 Jun 2008
 %%----------------------------------------------------------------------
 -module(xmerl_sax_parser).
 
@@ -72,9 +72,9 @@ file(Name,Options) ->
 	    CL = filename:absname(Dir),
             File = filename:basename(Name),
 	    ContinuationFun = fun default_continuation_cb/1,
-            Res = stream(<<>>, 
+            Res = stream(<<>>,
                          [{continuation_fun, ContinuationFun},
-                          {continuation_state, FD}, 
+                          {continuation_state, FD},
                           {current_location, CL},
                           {entity, File}
                           |Options],
@@ -101,39 +101,39 @@ stream(Xml, Options, InputType) when is_list(Xml), is_list(Options) ->
     State = parse_options(Options, initial_state()),
     case State#xmerl_sax_parser_state.file_type of
 	dtd ->
-	    xmerl_sax_parser_list:parse_dtd(Xml, 
+	    xmerl_sax_parser_list:parse_dtd(Xml,
 					    State#xmerl_sax_parser_state{encoding = list,
 									 input_type = InputType});
 	normal ->
-	    xmerl_sax_parser_list:parse(Xml, 
+	    xmerl_sax_parser_list:parse(Xml,
 					State#xmerl_sax_parser_state{encoding = list,
 								     input_type = InputType})
     end;
 stream(Xml, Options, InputType) when is_binary(Xml), is_list(Options) ->
-    case parse_options(Options, initial_state()) of 
+    case parse_options(Options, initial_state()) of
 	{error, Reason} -> {error, Reason};
 	State ->
-	    ParseFunction = 
+	    ParseFunction =
 		case  State#xmerl_sax_parser_state.file_type of
 		    dtd ->
 			parse_dtd;
 		    normal ->
 			parse
 		end,
-                try 
+                try
                     {Xml1, State1} = detect_charset(Xml, State),
                      parse_binary(Xml1,
                                   State1#xmerl_sax_parser_state{input_type = InputType},
                                   ParseFunction)
                 catch
                     throw:{fatal_error, {State2, Reason}} ->
-                      {fatal_error, 
+                      {fatal_error,
                        {
                          State2#xmerl_sax_parser_state.current_location,
-                         State2#xmerl_sax_parser_state.entity, 
+                         State2#xmerl_sax_parser_state.entity,
                          1
                         },
-                       Reason, [], 
+                       Reason, [],
                        State2#xmerl_sax_parser_state.event_state}
               end
     end.
@@ -157,7 +157,7 @@ parse_binary(Xml, #xmerl_sax_parser_state{encoding={utf16,big}}=State, F) ->
     xmerl_sax_parser_utf16be:F(Xml, State);
 parse_binary(Xml, #xmerl_sax_parser_state{encoding=latin1}=State, F) ->
     xmerl_sax_parser_latin1:F(Xml, State);
-parse_binary(_, #xmerl_sax_parser_state{encoding=Enc}, State) -> 
+parse_binary(_, #xmerl_sax_parser_state{encoding=Enc}, State) ->
     ?fatal_error(State, lists:flatten(io_lib:format("Charcter set ~p not supported", [Enc]))).
 
 %%----------------------------------------------------------------------
@@ -177,9 +177,9 @@ initial_state() ->
 %%----------------------------------------------------------------------
 %% Function: parse_options(Options, State)
 %% Input:    Options = [Option]
-%%           Option = {event_state, term()} | {event_fun, fun()} | 
+%%           Option = {event_state, term()} | {event_fun, fun()} |
 %%                    {continuation_state, term()} | {continuation_fun, fun()} |
-%%                    {encoding, Encoding} | {file_type, FT} 
+%%                    {encoding, Encoding} | {file_type, FT}
 %%           FT = normal | dtd
 %%           Encoding = utf8 | utf16le | utf16be | list | iso8859
 %%           State = #xmerl_sax_parser_state{}
@@ -200,7 +200,7 @@ parse_options([{file_type, FT} |Options], State) when FT==normal; FT==dtd ->
     parse_options(Options, State#xmerl_sax_parser_state{file_type = FT});
 parse_options([{encoding, E} |Options], State) ->
     case check_encoding_option(E) of
-	{error, Reason} -> 
+	{error, Reason} ->
 	    {error, Reason};
 	Enc ->
 	    parse_options(Options, State#xmerl_sax_parser_state{encoding = Enc})
@@ -231,7 +231,7 @@ check_encoding_option(E) ->
 %% Description: Detects which character set is used in a binary stream.
 %%----------------------------------------------------------------------
 detect_charset(<<>>, #xmerl_sax_parser_state{continuation_fun = undefined} = State) ->
-    ?fatal_error(State, "Can't detect character encoding due to lack of indata"); 
+    ?fatal_error(State, "Can't detect character encoding due to lack of indata");
 detect_charset(<<>>, State) ->
     cf(<<>>, State, fun detect_charset/2);
 detect_charset(Bytes, State) ->
@@ -269,22 +269,14 @@ detect_charset_1(<<16#3C, 16#3F, 16#78, 16#6D>> = Xml, State) ->
     cf(Xml, State, fun detect_charset_1/2);
 detect_charset_1(<<16#3C, 16#3F, 16#78, 16#6D, 16#6C, Xml2/binary>>, State) ->
     {Xml3, State1} = read_until_end_of_xml_directive(Xml2, State),
-    case parse_xml_directive(Xml3) of
-	{error, Reason} ->
-	    ?fatal_error(State, Reason);
-	AttrList ->
-	    case lists:keysearch("encoding", 1, AttrList) of
-		{value, {_, E}} ->
-		    case convert_encoding(E) of
-			{error, Reason} ->
-			    ?fatal_error(State, Reason);
-			Enc ->
-			    {<<16#3C, 16#3F, 16#78, 16#6D, 16#6C, Xml3/binary>>, 
-                             State1#xmerl_sax_parser_state{encoding=Enc}}
-		    end;
-		_ ->
-		    {<<16#3C, 16#3F, 16#78, 16#6D, 16#6C, Xml3/binary>>, State1}
-	    end
+    AttrList = parse_xml_directive(Xml3, State),
+    case lists:keysearch("encoding", 1, AttrList) of
+        {value, {_, E}} ->
+            Enc = convert_encoding(E, State),
+            {<<16#3C, 16#3F, 16#78, 16#6D, 16#6C, Xml3/binary>>,
+             State1#xmerl_sax_parser_state{encoding=Enc}};
+        _ ->
+            {<<16#3C, 16#3F, 16#78, 16#6D, 16#6C, Xml3/binary>>, State1}
     end;
 detect_charset_1(Xml, State) ->
     {Xml, State}.
@@ -295,7 +287,7 @@ detect_charset_1(Xml, State) ->
 %% Output:  utf8 | iso8859
 %% Description: Converting 7,8 bit and utf8 encoding strings to internal format.
 %%----------------------------------------------------------------------
-convert_encoding(Enc) -> %% Just for 7,8 bit + utf8
+convert_encoding(Enc, State) -> %% Just for 7,8 bit + utf8
     case string:to_lower(Enc) of
 	"utf-8" -> utf8;
 	"us-ascii" -> utf8;
@@ -309,19 +301,19 @@ convert_encoding(Enc) -> %% Just for 7,8 bit + utf8
 	"iso-8859-7" -> latin1;
 	"iso-8859-8" -> latin1;
 	"iso-8859-9" -> latin1;
-	_ -> {error, "Unknown encoding: " ++ Enc}
+	_ -> ?fatal_error(State, "Unknown encoding: " ++ Enc)
     end.
 
 %%----------------------------------------------------------------------
 %% Function: parse_xml_directive(Xml)
 %% Input:  Xml = binary()
 %%         Acc = list()
-%% Output:  
+%% Output:
 %% Description: Parsing the xml declaration from the input stream.
 %%----------------------------------------------------------------------
-parse_xml_directive(<<C, Rest/binary>>) when ?is_whitespace(C) ->
-   parse_xml_directive_1(Rest, []).
-    
+parse_xml_directive(<<C, Rest/binary>>, State) when ?is_whitespace(C) ->
+   parse_xml_directive_1(Rest, [], State).
+
 %%----------------------------------------------------------------------
 %% Function: parse_xml_directive_1(Xml, Acc) -> [{Name, Value}]
 %% Input:  Xml = binary()
@@ -331,20 +323,20 @@ parse_xml_directive(<<C, Rest/binary>>) when ?is_whitespace(C) ->
 %% Output: see above
 %% Description: Parsing the xml declaration from the input stream.
 %%----------------------------------------------------------------------
-parse_xml_directive_1(<<C, Rest/binary>>, Acc) when ?is_whitespace(C) ->
-    parse_xml_directive_1(Rest, Acc);
-parse_xml_directive_1(<<"?>", _/binary>>, Acc) ->
+parse_xml_directive_1(<<C, Rest/binary>>, Acc, State) when ?is_whitespace(C) ->
+    parse_xml_directive_1(Rest, Acc, State);
+parse_xml_directive_1(<<"?>", _/binary>>, Acc, _State) ->
     Acc;
-parse_xml_directive_1(<<C, Rest/binary>>, Acc) when 97 =< C, C =< 122 ->
+parse_xml_directive_1(<<C, Rest/binary>>, Acc, State) when 97 =< C, C =< 122 ->
     {Name, Rest1} = parse_name(Rest, [C]),
-    Rest2 = parse_eq(Rest1),
-    {Value, Rest3} = parse_value(Rest2),
-    parse_xml_directive_1(Rest3, [{Name, Value} |Acc]);
-parse_xml_directive_1(_, _) ->
-    {error, "Unknown attribute in xml directive"}.
+    Rest2 = parse_eq(Rest1, State),
+    {Value, Rest3} = parse_value(Rest2, State),
+    parse_xml_directive_1(Rest3, [{Name, Value} |Acc], State);
+parse_xml_directive_1(_, _, State) ->
+    ?fatal_error(State, "Unknown attribute in xml directive").
 
 %%----------------------------------------------------------------------
-%% Function: parse_xml_directive_1(Xml, Acc) -> Name
+%% Function: parse_name(Xml, Acc) -> Name
 %% Input:   Xml = binary()
 %%          Acc = string()
 %% Output:  Name = string()
@@ -361,10 +353,12 @@ parse_name(Rest, Acc) ->
 %% Output:  Rest = binary()
 %% Description: Reads an '=' from the stream.
 %%----------------------------------------------------------------------
-parse_eq(<<C, Rest/binary>>) when ?is_whitespace(C) ->
-    parse_eq(Rest);
-parse_eq(<<"=", Rest/binary>>) ->
-    Rest.
+parse_eq(<<C, Rest/binary>>, State) when ?is_whitespace(C) ->
+    parse_eq(Rest, State);
+parse_eq(<<"=", Rest/binary>>, _State) ->
+    Rest;
+parse_eq(_, State) ->
+    ?fatal_error(State, "expecting = or whitespace").
 
 %%----------------------------------------------------------------------
 %% Function: parse_value(Xml) -> {Value, Rest}
@@ -373,10 +367,12 @@ parse_eq(<<"=", Rest/binary>>) ->
 %%          Rest = binary()
 %% Description: Parsing an attribute value from the stream.
 %%----------------------------------------------------------------------
-parse_value(<<C, Rest/binary>>) when ?is_whitespace(C) ->
-    parse_value(Rest);
-parse_value(<<C, Rest/binary>>) when C == $'; C == $" ->
-    parse_value_1(Rest, C, []).
+parse_value(<<C, Rest/binary>>, State) when ?is_whitespace(C) ->
+    parse_value(Rest, State);
+parse_value(<<C, Rest/binary>>, _State) when C == $'; C == $" ->
+    parse_value_1(Rest, C, []);
+parse_value(_, State) ->
+    ?fatal_error(State, "\', \" or whitespace expected").
 
 %%----------------------------------------------------------------------
 %% Function: parse_value_1(Xml, Stop, Acc) -> {Value, Rest}
@@ -431,7 +427,7 @@ read_until_end_of_xml_directive(Rest, State) ->
         nomatch ->
             case cf(Rest, State) of
                 {<<>>, _} ->
-                    ?fatal_error(State, "Can't detect character encoding due to lack of indata"); 
+                    ?fatal_error(State, "Can't detect character encoding due to lack of indata");
                 {NewBytes, NewState} ->
                     read_until_end_of_xml_directive(NewBytes, NewState)
             end;
@@ -450,9 +446,9 @@ read_until_end_of_xml_directive(Rest, State) ->
 %%              input stream and calls the fun in NextCall.
 %%----------------------------------------------------------------------
 cf(_Rest, #xmerl_sax_parser_state{continuation_fun = undefined} = State) ->
-    ?fatal_error(State, "Continuation function undefined"); 
+    ?fatal_error(State, "Continuation function undefined");
 cf(Rest, #xmerl_sax_parser_state{continuation_fun = CFun, continuation_state = CState} = State) ->
-    Result = 
+    Result =
 	try
 	    CFun(CState)
 	catch
@@ -463,9 +459,9 @@ cf(Rest, #xmerl_sax_parser_state{continuation_fun = CFun, continuation_state = C
 	end,
     case Result of
 	{<<>>, _} ->
-	    ?fatal_error(State, "Can't detect character encoding due to lack of indata"); 
+	    ?fatal_error(State, "Can't detect character encoding due to lack of indata");
 	{NewBytes, NewContState} ->
-            {<<Rest/binary, NewBytes/binary>>,  
+            {<<Rest/binary, NewBytes/binary>>,
              State#xmerl_sax_parser_state{continuation_state = NewContState}}
     end.
 
@@ -479,10 +475,10 @@ cf(Rest, #xmerl_sax_parser_state{continuation_fun = CFun, continuation_state = C
 %%              input stream and calls the fun in NextCall.
 %%----------------------------------------------------------------------
 cf(_Rest, #xmerl_sax_parser_state{continuation_fun = undefined} = State, _) ->
-    ?fatal_error(State, "Continuation function undefined"); 
-cf(Rest, #xmerl_sax_parser_state{continuation_fun = CFun, continuation_state = CState} = State, 
+    ?fatal_error(State, "Continuation function undefined");
+cf(Rest, #xmerl_sax_parser_state{continuation_fun = CFun, continuation_state = CState} = State,
    NextCall) ->
-    Result = 
+    Result =
 	try
 	    CFun(CState)
 	catch
@@ -493,8 +489,8 @@ cf(Rest, #xmerl_sax_parser_state{continuation_fun = CFun, continuation_state = C
 	end,
     case Result of
 	{<<>>, _} ->
-	    ?fatal_error(State, "Can't detect character encoding due to lack of indata"); 
+	    ?fatal_error(State, "Can't detect character encoding due to lack of indata");
 	{NewBytes, NewContState} ->
-	    NextCall(<<Rest/binary, NewBytes/binary>>,  
+	    NextCall(<<Rest/binary, NewBytes/binary>>,
 		     State#xmerl_sax_parser_state{continuation_state = NewContState})
     end.
diff --git a/lib/xmerl/src/xmerl_sax_parser_base.erlsrc b/lib/xmerl/src/xmerl_sax_parser_base.erlsrc
index 1dca9608cb..ef753c7148 100644
--- a/lib/xmerl/src/xmerl_sax_parser_base.erlsrc
+++ b/lib/xmerl/src/xmerl_sax_parser_base.erlsrc
@@ -3679,7 +3679,7 @@ create_tempfile(Template) ->
 		    false ->
 			case os:getenv("TEMP") of
 			    false ->
-				throw({error, "Variabel TMP or TEMP doesn't exist"});
+				throw({error, "Variable TMP or TEMP doesn't exist"});
 			    P2 ->
 				P2
 			end;
diff --git a/lib/xmerl/src/xmerl_scan.erl b/lib/xmerl/src/xmerl_scan.erl
index e543a5a11e..d76ed5c820 100644
--- a/lib/xmerl/src/xmerl_scan.erl
+++ b/lib/xmerl/src/xmerl_scan.erl
@@ -2410,15 +2410,22 @@ scan_att_chars("&" ++ T, S0, Delim, Acc, TmpAcc,AT,IsNorm) -> % Reference
 	true ->
 	    scan_att_chars(T1,S1,Delim,[ExpRef|Acc],[ExpRef|TmpAcc],AT,IsNorm);
 	_ ->
-            Ch = string_to_char_set(S#xmerl_scanner.encoding, ExpRef),
             case T of
                 "#" ++ _ ->
                     %% normalization rules (sec 3.3.3) require that for
                     %% character references, the referenced character be
                     %% added directly to the normalized value
-                    scan_att_chars(T1, S1, Delim, Ch ++ Acc,TmpAcc, AT,IsNorm);
+                    {T2,S2,IsNorm2} =
+                        if
+                            ?whitespace(hd(ExpRef)) ->
+                                normalize(T1, S1, IsNorm);
+                            true ->
+                                {T1, S1, IsNorm}
+                        end,
+                    scan_att_chars(T2, S2, Delim, ExpRef ++ Acc, TmpAcc, AT, IsNorm2);
                 _ ->
-                    scan_att_chars(Ch ++ T1, S1, Delim, Acc,TmpAcc, AT,IsNorm)
+                    Ch = string_to_char_set(S#xmerl_scanner.encoding, ExpRef),
+                    scan_att_chars(Ch ++ T1, S1, Delim, Acc, TmpAcc, AT, IsNorm)
             end
     end;
 scan_att_chars("<" ++ _T, S0, _Delim, _Acc,_, _,_) -> % Tags not allowed here
@@ -3964,7 +3971,7 @@ normalize(T,S,IsNorm) ->
 	{_,T,S} ->
 	    {T,S,IsNorm};
 	{_,T1,S1} ->
-	    {T1,S1,true}
+	    normalize(T1,S1,true)
     end.
 
 
diff --git a/lib/xmerl/test/xmerl_SUITE_data/eventp/CMOM.xml b/lib/xmerl/test/xmerl_SUITE_data/eventp/CMOM.xml
index c2533248d1..0379c18214 100644
--- a/lib/xmerl/test/xmerl_SUITE_data/eventp/CMOM.xml
+++ b/lib/xmerl/test/xmerl_SUITE_data/eventp/CMOM.xml
@@ -276,7 +276,7 @@
     </exception>
 
     <exception name="UpgradeNotPossibleException">
-        <description>Before an upgrade is started it was found that the upgrade can not take place. A possible reason is that the upgrade package that is running in the node is not in the upgrade window of this upgrade package. </description>
+        <description>Before an upgrade is started it was found that the upgrade cannot take place. A possible reason is that the upgrade package that is running in the node is not in the upgrade window of this upgrade package. </description>
         <exceptionParameter name="message">
             <dataType>
                 <string/>
@@ -1703,7 +1703,7 @@ Example:
 
     <exception name="NoSuchAttributeException">
         <description>Exception thrown when an MO attribute is requested to be accessed but the access 
-method for the is not defined (the attribute can not be accessed)</description>
+method for the is not defined (the attribute cannot be accessed)</description>
     </exception>
 
     <exception name="MoCardinalityViolationException">
@@ -3125,7 +3125,7 @@ active = Synchronization is used in system clock generation.
         <description>RefState can have the following values:
 failed = synchronization reference is not capable to perform its required tasks.
 degraded = capability of synchronization reference to perform its required tasks is degraded e.g. because of signal level degradation. This value is only applicable for traffic carrying (ET physical path termination) synchronization references. Note: attribute degradationIsFault controls whether synchronization reference degradation is interpreted as a synchronization reference fault or not.
-lossOfTracking = system clock regulation algorithm on TU board can not follow the 8kHz synchronization reference signal either because of the poor quality of the signal or because of a HW fault at TU board. If all synchronization references repeatedly end up to state lossOfTracking, fault is likely in TU HW.
+lossOfTracking = system clock regulation algorithm on TU board cannot follow the 8kHz synchronization reference signal either because of the poor quality of the signal or because of a HW fault at TU board. If all synchronization references repeatedly end up to state lossOfTracking, fault is likely in TU HW.
 ok = synchronization reference is capable of performing its required tasks.
 </description>
         <enumMember name="failed">
@@ -11270,7 +11270,7 @@ Note! This action requires a transaction.</description>
 
 The changing of the IP address with operation assignIpAddress might cause interruption of the communication if the network management tool is connected via the ethernet link.
 
-Note: The EthernetLink MO can not be deleted!
+Note: The EthernetLink MO cannot be deleted!
 
 Note: The performance monitoring counters in the EthernetLink MO has a "Wrap-around time" of approximately 2 hours.
 </description>
@@ -11532,8 +11532,8 @@ Note! This action requires a transaction.</description>
         <description>This MO holds the IP routing table.
 
 The IpRoutingTable MO is automatically created when the Ip MO is created.
-The IpRoutingTable MO can not be created manually.
-The IpRoutingTable MO can not be deleted.
+The IpRoutingTable MO cannot be created manually.
+The IpRoutingTable MO cannot be deleted.
 </description>
         <systemCreated/>
         <attribute name="userLabel">
@@ -12967,7 +12967,7 @@ Note! When using fractional atm, timeslot 1 must be a part of the fraction.
 
 Note! ETM1 does not support EPD and PPD
 
-Note! ETM1 does not have a proper buffer management. Thus fairness of UBR+ traffic can not be guaranteed and shaping on UBR+ traffic is not possible.
+Note! ETM1 does not have a proper buffer management. Thus fairness of UBR+ traffic cannot be guaranteed and shaping on UBR+ traffic is not possible.
 
 Note! The number of VCC TP+VPC TP with performance monitoring enabled (i.e. PM mode &lt;&gt; off) is restricted to 1 per port.
 </description>
@@ -13371,7 +13371,7 @@ Struct element description :
 -Date is in string format, max length is 40. Format for date is: weekday month date hour:min:seconds year.
 -Status is in string format, max length is 40.
 
-Note! The identity can not be the same as name. Identity should contain the product identity.
+Note! The identity cannot be the same as name. Identity should contain the product identity.
 
 
 </description>
@@ -13562,7 +13562,7 @@ Note! For comment and operatorName spaces (' ') are also allowed within the stri
 
 This action does not require a transaction.
 
-Note! The configurationVersionName and identity can not be the same. The identity should be the product identity.
+Note! The configurationVersionName and identity cannot be the same. The identity should be the product identity.
 </description>
             <returnType>
                 <void/>
@@ -17367,7 +17367,7 @@ NOTE: There is a restriction of a maximum of 32 Mtp2Tp's per MP.</description>
         <attribute name="mtp2ProfileItuId">
             <description>Reference to a Mtp2ProfileItu MO.
 
-Note: The bitRate can not be changed.</description>
+Note: The bitRate cannot be changed.</description>
             <mandatory/>
             <noNotification/>
             <dataType>
@@ -17566,7 +17566,7 @@ NOTE: There is a restriction of a maximum of 32 Mtp2Tp's per MP.</description>
         <attribute name="mtp2ProfileAnsiId">
             <description>Reference to a Mtp2ProfileAnsi MO.
 
-Note: The bitRate can not be changed.</description>
+Note: The bitRate cannot be changed.</description>
             <mandatory/>
             <noNotification/>
             <dataType>
@@ -21777,7 +21777,7 @@ Each E1/DS1/J1 channel can suport up to 2 VP connections.
 
 The ET-MC41 board support one biderectional F4/F5 PM flow per E1 channel.
 
-Note! The ETMC41 supports IMA. However the E1 ports being part of the same IMA group can not be selected randomly.
+Note! The ETMC41 supports IMA. However the E1 ports being part of the same IMA group cannot be selected randomly.
 
 Note! The number of VCC TP+VPC TP with performance monitoring enabled (i.e. PM mode &lt;&gt; off) is restricted to 1 / port
 
@@ -21883,7 +21883,7 @@ NOTE: There is a restriction of a maximum of 32 Mtp2Tp's per MP.
         <attribute name="mtp2ProfileChinaId">
             <description>Reference to a Mtp2ProfileChina MO.
 
-Note: The bitRate can not be changed.</description>
+Note: The bitRate cannot be changed.</description>
             <mandatory/>
             <noNotification/>
             <dataType>
diff --git a/lib/xmerl/test/xmerl_SUITE_data/eventp/CelloMOM.xml b/lib/xmerl/test/xmerl_SUITE_data/eventp/CelloMOM.xml
index 3b5d8ae2ad..3b9ccac0f4 100644
--- a/lib/xmerl/test/xmerl_SUITE_data/eventp/CelloMOM.xml
+++ b/lib/xmerl/test/xmerl_SUITE_data/eventp/CelloMOM.xml
@@ -276,7 +276,7 @@
     </exception>

 

     <exception name="UpgradeNotPossibleException">

-        <description>Before an upgrade is started it was found that the upgrade can not take place. A possible reason is that the upgrade package that is running in the node is not in the upgrade window of this upgrade package. </description>

+        <description>Before an upgrade is started it was found that the upgrade cannot take place. A possible reason is that the upgrade package that is running in the node is not in the upgrade window of this upgrade package. </description>

         <exceptionParameter name="message">

             <dataType>

                 <string/>

@@ -1703,7 +1703,7 @@ Example:
 

     <exception name="NoSuchAttributeException">

         <description>Exception thrown when an MO attribute is requested to be accessed but the access 

-method for the is not defined (the attribute can not be accessed)</description>

+method for the is not defined (the attribute cannot be accessed)</description>

     </exception>

 

     <exception name="MoCardinalityViolationException">

@@ -3125,7 +3125,7 @@ active = Synchronization is used in system clock generation.
         <description>RefState can have the following values:

 failed = synchronization reference is not capable to perform its required tasks.

 degraded = capability of synchronization reference to perform its required tasks is degraded e.g. because of signal level degradation. This value is only applicable for traffic carrying (ET physical path termination) synchronization references. Note: attribute degradationIsFault controls whether synchronization reference degradation is interpreted as a synchronization reference fault or not.

-lossOfTracking = system clock regulation algorithm on TU board can not follow the 8kHz synchronization reference signal either because of the poor quality of the signal or because of a HW fault at TU board. If all synchronization references repeatedly end up to state lossOfTracking, fault is likely in TU HW.

+lossOfTracking = system clock regulation algorithm on TU board cannot follow the 8kHz synchronization reference signal either because of the poor quality of the signal or because of a HW fault at TU board. If all synchronization references repeatedly end up to state lossOfTracking, fault is likely in TU HW.

 ok = synchronization reference is capable of performing its required tasks.

 </description>

         <enumMember name="failed">

@@ -11270,7 +11270,7 @@ Note! This action requires a transaction.</description>
 

 The changing of the IP address with operation assignIpAddress might cause interruption of the communication if the network management tool is connected via the ethernet link.

 

-Note: The EthernetLink MO can not be deleted!

+Note: The EthernetLink MO cannot be deleted!

 

 Note: The performance monitoring counters in the EthernetLink MO has a "Wrap-around time" of approximately 2 hours.

 </description>

@@ -11532,8 +11532,8 @@ Note! This action requires a transaction.</description>
         <description>This MO holds the IP routing table.

 

 The IpRoutingTable MO is automatically created when the Ip MO is created.

-The IpRoutingTable MO can not be created manually.

-The IpRoutingTable MO can not be deleted.

+The IpRoutingTable MO cannot be created manually.

+The IpRoutingTable MO cannot be deleted.

 </description>

         <systemCreated/>

         <attribute name="userLabel">

@@ -12967,7 +12967,7 @@ Note! When using fractional atm, timeslot 1 must be a part of the fraction.
 

 Note! ETM1 does not support EPD and PPD

 

-Note! ETM1 does not have a proper buffer management. Thus fairness of UBR+ traffic can not be guaranteed and shaping on UBR+ traffic is not possible.

+Note! ETM1 does not have a proper buffer management. Thus fairness of UBR+ traffic cannot be guaranteed and shaping on UBR+ traffic is not possible.

 

 Note! The number of VCC TP+VPC TP with performance monitoring enabled (i.e. PM mode &lt;&gt; off) is restricted to 1 per port.

 </description>

@@ -13371,7 +13371,7 @@ Struct element description :
 -Date is in string format, max length is 40. Format for date is: weekday month date hour:min:seconds year.

 -Status is in string format, max length is 40.

 

-Note! The identity can not be the same as name. Identity should contain the product identity.

+Note! The identity cannot be the same as name. Identity should contain the product identity.

 

 

 </description>

@@ -13562,7 +13562,7 @@ Note! For comment and operatorName spaces (' ') are also allowed within the stri
 

 This action does not require a transaction.

 

-Note! The configurationVersionName and identity can not be the same. The identity should be the product identity.

+Note! The configurationVersionName and identity cannot be the same. The identity should be the product identity.

 </description>

             <returnType>

                 <void/>

@@ -17367,7 +17367,7 @@ NOTE: There is a restriction of a maximum of 32 Mtp2Tp's per MP.</description>
         <attribute name="mtp2ProfileItuId">

             <description>Reference to a Mtp2ProfileItu MO.

 

-Note: The bitRate can not be changed.</description>

+Note: The bitRate cannot be changed.</description>

             <mandatory/>

             <noNotification/>

             <dataType>

@@ -17566,7 +17566,7 @@ NOTE: There is a restriction of a maximum of 32 Mtp2Tp's per MP.</description>
         <attribute name="mtp2ProfileAnsiId">

             <description>Reference to a Mtp2ProfileAnsi MO.

 

-Note: The bitRate can not be changed.</description>

+Note: The bitRate cannot be changed.</description>

             <mandatory/>

             <noNotification/>

             <dataType>

@@ -21777,7 +21777,7 @@ Each E1/DS1/J1 channel can suport up to 2 VP connections.
 

 The ET-MC41 board support one biderectional F4/F5 PM flow per E1 channel.

 

-Note! The ETMC41 supports IMA. However the E1 ports being part of the same IMA group can not be selected randomly.

+Note! The ETMC41 supports IMA. However the E1 ports being part of the same IMA group cannot be selected randomly.

 

 Note! The number of VCC TP+VPC TP with performance monitoring enabled (i.e. PM mode &lt;&gt; off) is restricted to 1 / port

 

@@ -21883,7 +21883,7 @@ NOTE: There is a restriction of a maximum of 32 Mtp2Tp's per MP.
         <attribute name="mtp2ProfileChinaId">

             <description>Reference to a Mtp2ProfileChina MO.

 

-Note: The bitRate can not be changed.</description>

+Note: The bitRate cannot be changed.</description>

             <mandatory/>

             <noNotification/>

             <dataType>

diff --git a/lib/xmerl/test/xmerl_xsd_lib.erl b/lib/xmerl/test/xmerl_xsd_lib.erl
index 6006cf500f..39300cd6cb 100644
--- a/lib/xmerl/test/xmerl_xsd_lib.erl
+++ b/lib/xmerl/test/xmerl_xsd_lib.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2006-2016. All Rights Reserved.
+%% Copyright Ericsson AB 2006-2019. All Rights Reserved.
 %% 
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -94,8 +94,9 @@ return_results2({NewFail, NewSuccess, NewMal, NewNotMal}, NumSucc, SkippedN, Tot
                   _ -> io_lib:format("These ~p  skipped tests were malicious, but succeeds now: ~p~n",
                                      [length(NewNotMal), NewNotMal])
               end,
-    ct:comment(io_lib:format("~p successful tests, ~p skipped tests of totally ~p test cases. ~n" ++
-			     NFComm ++ NSComm ++ NMComm ++ NNMComm, [NumSucc, SkippedN, TotN])),
+    ct:comment(io_lib:format("~p successful tests, ~p skipped tests of totally ~p test cases. ~n~ts",
+                             [NumSucc, SkippedN, TotN,
+                              NFComm ++ NSComm ++ NMComm ++ NNMComm])),
     [] = NewFail.
 
 %% return_results2(Diff,{STErrs,STOther},{ITErrs,ITOther},TotN) ->
diff --git a/lib/xmerl/vsn.mk b/lib/xmerl/vsn.mk
index 3a266a56bd..31ffa6e749 100644
--- a/lib/xmerl/vsn.mk
+++ b/lib/xmerl/vsn.mk
@@ -1 +1 @@
-XMERL_VSN = 1.3.18
+XMERL_VSN = 1.3.20