681 files changed, 36987 insertions, 20616 deletions

diff --git a/lib/asn1/c_src/asn1_erl_nif.c b/lib/asn1/c_src/asn1_erl_nif.c
index 797be6d4f8..da43af3405 100644
--- a/lib/asn1/c_src/asn1_erl_nif.c
+++ b/lib/asn1/c_src/asn1_erl_nif.c
@@ -999,7 +999,7 @@ static int ber_decode_value(ErlNifEnv* env, ERL_NIF_TERM *value, unsigned char *
 	while (*ib_index < end_index) {
 
 	    if ((maybe_ret = ber_decode(env, &term, in_buf, ib_index,
-                   *ib_index + len)) <= ASN1_ERROR
+                   end_index )) <= ASN1_ERROR
 	    )
 		return maybe_ret;
 	    curr_head = enif_make_list_cell(env, term, curr_head);
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/doc/src/notes.xml b/lib/asn1/doc/src/notes.xml
index 086b5f38c6..22ca7840de 100644
--- a/lib/asn1/doc/src/notes.xml
+++ b/lib/asn1/doc/src/notes.xml
@@ -32,6 +32,22 @@
   <p>This document describes the changes made to the asn1 application.</p>
 
 
+<section><title>Asn1 5.0.8</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Handle erroneous length during decode (BER only) without
+	    crashing.</p>
+          <p>
+	    Own Id: OTP-15470 Aux Id: ERIERL-278 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Asn1 5.0.7</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
@@ -69,6 +85,22 @@
 
 </section>
 
+<section><title>Asn1 5.0.5.2</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Handle erroneous length during decode (BER only) without
+	    crashing.</p>
+          <p>
+	    Own Id: OTP-15470 Aux Id: ERIERL-278 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Asn1 5.0.5.1</title>
 
     <section><title>Known Bugs and Problems</title>
@@ -1980,4 +2012,3 @@
     <!-- p>There are also release notes for <url href="notes_history.html">older versions</url>.</p -->
   </section>
 </chapter>
-
diff --git a/lib/asn1/test/asn1_SUITE.erl b/lib/asn1/test/asn1_SUITE.erl
index 5506923341..ab78678110 100644
--- a/lib/asn1/test/asn1_SUITE.erl
+++ b/lib/asn1/test/asn1_SUITE.erl
@@ -63,7 +63,8 @@ groups() ->
        constraint_equivalence]},
 
      {ber, Parallel,
-      [ber_choiceinseq,
+      [ber_decode_invalid_length,
+       ber_choiceinseq,
        % Uses 'SOpttest'
        ber_optional,
        tagdefault_automatic]},
@@ -665,6 +666,19 @@ module_test(M0, Config, Rule, Opts) ->
 	    end
     end.
 
+ber_decode_invalid_length(_Config) ->
+    Bin = <<48,129,157,48,0,2,1,2,164,0,48,129,154,49,24,48,22,6,
+            3,85,4,10,19,15,69,120,97,109,112,108,101,32,67,111,
+            109,112,97,110,121,49,29,48,27,6,9,42,134,72,134,247,
+            13,1,9,1,22,14,99,97,64,101,120,97,109,112,108,101,46,
+            99,111,109,49,13,48,11,6,3,85,4,7,19,4,79,117,108,117,
+            49,26,48,24,6,3,85,4,8,19,17,80,111,104,106,111,105,
+            115,45,80,111,104,106,97,110,109,97,97,49,11,48,9,6,3,
+            85,4,6,19,2,70,73,49,19,48,17,6,3,85,4,3,19,10,69,120,
+            97,109,112,108,101,32,67,65,49,11,48,16,6,3,85,4,11,
+            19,9,84,101>>,
+    {'EXIT',{error,{asn1,{invalid_value,12}}}} = (catch asn1rt_nif:decode_ber_tlv(Bin)),
+    ok.
 
 ber_choiceinseq(Config) ->
     test(Config, fun ber_choiceinseq/3, [ber]).
diff --git a/lib/asn1/vsn.mk b/lib/asn1/vsn.mk
index 970479cc44..69f1af28e8 100644
--- a/lib/asn1/vsn.mk
+++ b/lib/asn1/vsn.mk
@@ -1 +1 @@
-ASN1_VSN = 5.0.7
+ASN1_VSN = 5.0.8
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 2f853d133d..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>
@@ -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..2ab421fe9e 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>
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/notes.xml b/lib/common_test/doc/src/notes.xml
index dc18def838..2f53f1c29e 100644
--- a/lib/common_test/doc/src/notes.xml
+++ b/lib/common_test/doc/src/notes.xml
@@ -75,6 +75,44 @@
 
 </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>
@@ -4026,8 +4064,3 @@
   <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_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 7e98e6395f..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}] ->
@@ -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_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 58a29edace..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} ->
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.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 86081369b9..fe869a4373 100644
--- a/lib/common_test/src/cth_log_redirect.erl
+++ b/lib/common_test/src/cth_log_redirect.erl
@@ -194,10 +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};
 
@@ -261,34 +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 34f2feb33c..1518c6e8d6 100644
--- a/lib/common_test/src/test_server_ctrl.erl
+++ b/lib/common_test/src/test_server_ctrl.erl
@@ -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}
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 0a374d7404..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
@@ -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_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/compiler/doc/src/compile.xml b/lib/compiler/doc/src/compile.xml
index 45e442f5c2..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>
@@ -695,12 +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,
@@ -729,7 +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
@@ -739,7 +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>
@@ -760,7 +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>
@@ -775,7 +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>
@@ -790,7 +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>,
@@ -800,7 +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>,
@@ -810,7 +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/compiler/doc/src/notes.xml b/lib/compiler/doc/src/notes.xml
index e0e5bc832b..02e6203137 100644
--- a/lib/compiler/doc/src/notes.xml
+++ b/lib/compiler/doc/src/notes.xml
@@ -32,6 +32,81 @@
   <p>This document describes the changes made to the Compiler
     application.</p>
 
+<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>
+      <list>
+        <item>
+	    <p>Fixed a rare internal consistency failure caused by a
+	    bug in the <c>beam_jump</c> pass. (Thanks to Simon
+	    Cornish for reporting this bug.)</p>
+          <p>
+	    Own Id: OTP-15400 Aux Id: ERL-759 </p>
+        </item>
+        <item>
+	    <p>The compiler could fail with an internal consistency
+	    check failure when compiling code that used the
+	    <c>is_function/2</c> BIF.</p>
+          <p>
+	    Own Id: OTP-15435 Aux Id: ERL-778 </p>
+        </item>
+        <item>
+	    <p>When an external fun was used, warnings for unused
+	    variables could be suppressed.</p>
+          <p>
+	    Own Id: OTP-15437 Aux Id: ERL-762 </p>
+        </item>
+        <item>
+	    <p>The compiler would crash when compiling an
+	    <c>after</c> block that called <c>erlang:raise/3</c> like
+	    this: <c>erlang:raise(Class, Stacktrace,
+	    Stacktrace)</c></p>
+          <p>
+	    Own Id: OTP-15481</p>
+        </item>
+      </list>
+    </section>
+
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+	    <p>When specified, the <c>+{source,Name}</c> option will
+	    now override the actual file name in stack traces,
+	    instead of only affecting the return value of
+	    <c>Mod:module_info()</c>.</p>
+	    <p>The <c>+deterministic</c> flag will also affect stack
+	    traces now, omitting all path information except the file
+	    name, fixing a long-standing issue where deterministic
+	    builds required deterministic paths.</p>
+          <p>
+	    Own Id: OTP-15245 Aux Id: ERL-706 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Compiler 7.2.7</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..2429f104c0
--- /dev/null
+++ b/lib/compiler/scripts/smoke
@@ -0,0 +1,122 @@
+#!/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.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..82ae3370fe
--- /dev/null
+++ b/lib/compiler/scripts/smoke-mix.exs
@@ -0,0 +1,95 @@
+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"},
+	  {: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 961dacc6c9..c971e8844d 100644
--- a/lib/compiler/src/Makefile
+++ b/lib/compiler/src/Makefile
@@ -49,7 +49,6 @@ MODULES =  \
 	beam_a \
 	beam_asm \
 	beam_block \
-	beam_bs \
 	beam_clean \
 	beam_dict \
 	beam_disasm \
@@ -91,7 +90,6 @@ MODULES =  \
 	rec_env \
 	sys_core_alias \
 	sys_core_bsm \
-	sys_core_dsetel \
 	sys_core_fold \
 	sys_core_fold_lists \
 	sys_core_inline \
@@ -104,6 +102,7 @@ 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
@@ -209,7 +208,6 @@ $(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
diff --git a/lib/compiler/src/beam_a.erl b/lib/compiler/src/beam_a.erl
index dd2537a699..0bccad1ecd 100644
--- a/lib/compiler/src/beam_a.erl
+++ b/lib/compiler/src/beam_a.erl
@@ -100,8 +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}) ->
@@ -118,10 +122,6 @@ 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}) ->
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_bs.erl b/lib/compiler/src/beam_bs.erl
deleted file mode 100644
index 15d8d687fc..0000000000
--- a/lib/compiler/src/beam_bs.erl
+++ /dev/null
@@ -1,183 +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: Peephole optimization of binary syntax instructions.
-
--module(beam_bs).
-
--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}, _Opt) ->
-    Fs = [function(F) || F <- Fs0],
-    {ok,{Mod,Exp,Attr,Fs,Lc}}.
-
-function({function,Name,Arity,CLabel,Is0}) ->
-    try
-	Is = bs_opt(Is0),
-	{function,Name,Arity,CLabel,Is}
-    catch
-        Class:Error:Stack ->
-	    io:fwrite("Function: ~w/~w\n", [Name,Arity]),
-	    erlang:raise(Class, Error, Stack)
-    end.
-
-%%%
-%%% Evaluate construction of constant bit fields.
-%%% Combine bs_skip_bits2 and bs_test_tail2 instructions.
-%%%
-
-bs_opt([{bs_put,_,_,_}=I|Is0]) ->
-    {BsPuts0,Is} = collect_bs_puts(Is0, [I]),
-    BsPuts = opt_bs_puts(BsPuts0),
-    BsPuts ++ bs_opt(Is);
-bs_opt([{test,bs_skip_bits2,F,[Ctx,{integer,I},Unit,_Flags]},
-            {test,bs_test_tail2,F,[Ctx,Bits]}|Is]) ->
-    [{test,bs_test_tail2,F,[Ctx,Bits+I*Unit]}|bs_opt(Is)];
-bs_opt([{test,bs_skip_bits2,F,[Ctx,{integer,I1},Unit1,Flags]},
-            {test,bs_skip_bits2,F,[Ctx,{integer,I2},Unit2,_]}|Is]) ->
-    I = {test,bs_skip_bits2,F,
-         [Ctx,{integer,I1*Unit1+I2*Unit2},1,Flags]},
-    bs_opt([I|Is]);
-bs_opt([I|Is]) ->
-    [I|bs_opt(Is)];
-bs_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.
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_except.erl b/lib/compiler/src/beam_except.erl
index 49bfb5606f..09925b2872 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,seq/2,splitwith/2]).
+-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) ->
@@ -79,13 +79,15 @@ translate_1(Ar, I, Is, #st{arity=Arity}=St, [{line,_}=Line|Acc1]=Acc0) ->
 	no ->
 	    translate(Is, St, [I|Acc0]);
 	{yes,function_clause,Acc2} ->
-	    case {Line,St} of
-		{{line,Loc},#st{lbl=Fi,loc=Loc}} ->
+	    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} ->
@@ -148,10 +150,15 @@ dig_out_fc(Arity, Is0) ->
                              (_) -> true
                           end, Is0),
     {Regs,Acc} = dig_out_fc_1(reverse(Is), Regs0, Acc0),
-    case is_fc(Arity, Regs) of
-        true ->
-            {yes,function_clause,Acc};
-        false ->
+    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.
 
@@ -160,8 +167,10 @@ dig_out_fc_1([{block,Bl}|Is], Regs0, Acc) ->
     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,_,_,Live}=I|Is], Regs0, Acc) ->
-    Regs = prune_xregs(Live, Regs0),
+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) ->
     {#{},[]};
@@ -182,25 +191,50 @@ dig_out_fc_block([{set,_,_,_}|_], _Regs) ->
     #{};
 dig_out_fc_block([], Regs) -> Regs.
 
-prune_xregs(Live, Regs) ->
-    maps:filter(fun({x,X}, _) -> X < Live end, Regs).
-
-is_fc(Arity, Regs) ->
+dig_out_stack_live(Regs, Default) ->
+    Reg = {x,2},
     case Regs of
-        #{{x,0}:={atom,function_clause},{x,1}:=Args} ->
-            is_fc_1(Args, 0) =:= Arity;
+        #{Reg:=List} ->
+            dig_out_stack_live_1(List, Default);
         #{} ->
-            false
+            Default
     end.
 
-is_fc_1({cons,{arg,I},T}, I) ->
-    is_fc_1(T, I+1);
-is_fc_1(nil, I) ->
-    I;
-is_fc_1(_, _) -> -1.
+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;
+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).
 
 get_reg(R, Regs) ->
     case Regs of
         #{R:=Val} -> Val;
         #{} -> R
     end.
+
+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_jump.erl b/lib/compiler/src/beam_jump.erl
index 8b0e3e32f8..6f50bfdb9c 100644
--- a/lib/compiler/src/beam_jump.erl
+++ b/lib/compiler/src/beam_jump.erl
@@ -182,18 +182,20 @@ eliminate_moves(Is) ->
 eliminate_moves([{select,select_val,Reg,_,List}=I|Is], D0, Acc) ->
     D = update_value_dict(List, Reg, D0),
     eliminate_moves(Is, D, [I|Acc]);
-eliminate_moves([{label,Lbl},{block,[{set,[Dst],[Lit],move}|BlkIs]}=Blk0|Is],
-        D, Acc0) ->
+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 already_has_value(Lit, Lbl, Dst, D) andalso
-        no_fallthrough(Acc0) of
-        true ->
-            %% Remove redundant 'move' instruction.
-            Blk = {block,BlkIs},
-            eliminate_moves([Blk|Is], D, Acc);
-        false ->
-            %% Keep 'move' instruction.
-            eliminate_moves([Blk0|Is], D, Acc)
+    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.
@@ -203,17 +205,20 @@ eliminate_moves([I|Is], D0, Acc) ->
     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).
 
-already_has_value(Lit, Lbl, Reg, D) ->
-    case D of
-        #{Lbl:={Reg,Lit}} ->
-            true;
-        #{} ->
-            false
-    end.
-
 update_value_dict([Lit,{f,Lbl}|T], Reg, D0) ->
     D = case D0 of
             #{Lbl:=unsafe} -> D0;
diff --git a/lib/compiler/src/beam_kernel_to_ssa.erl b/lib/compiler/src/beam_kernel_to_ssa.erl
index d6e675ae72..410bafe0bb 100644
--- a/lib/compiler/src/beam_kernel_to_ssa.erl
+++ b/lib/compiler/src/beam_kernel_to_ssa.erl
@@ -707,11 +707,6 @@ bif_cg(#k_bif{op=#k_remote{mod=#k_atom{val=erlang},name=#k_atom{val=Name}},
 %% internal_cg(Bif, [Arg], [Ret], Le, State) ->
 %%      {[Ainstr],State}.
 
-internal_cg(dsetelement, [Index0,Tuple0,New0], _Rs, _Le, St) ->
-    [New,Tuple,#b_literal{val=Index1}] = ssa_args([New0,Tuple0,Index0], St),
-    Index = #b_literal{val=Index1-1},
-    Set = #b_set{op=set_tuple_element,args=[New,Tuple,Index]},
-    {[Set],St};
 internal_cg(make_fun, [Name0,Arity0|As], Rs, _Le, St0) ->
     #k_atom{val=Name} = Name0,
     #k_int{val=Arity} = Arity0,
diff --git a/lib/compiler/src/beam_ssa.erl b/lib/compiler/src/beam_ssa.erl
index b491e340b7..a9977b0b1d 100644
--- a/lib/compiler/src/beam_ssa.erl
+++ b/lib/compiler/src/beam_ssa.erl
@@ -23,7 +23,7 @@
 -export([add_anno/3,get_anno/2,get_anno/3,
          clobbers_xregs/1,def/2,def_used/2,
          definitions/1,
-         dominators/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,
@@ -85,7 +85,8 @@
 -type anno() :: #{atom() := any()}.
 
 -type block_map() :: #{label():=b_blk()}.
--type dominator_map() :: #{label():=ordsets:ordset(label())}.
+-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()}.
@@ -108,7 +109,7 @@
                    'make_fun' | 'new_try_tag' |
                    'peek_message' | 'phi' | 'put_list' | 'put_map' | 'put_tuple' |
                    'raw_raise' | 'recv_next' | 'remove_message' | 'resume' |
-                   'set_tuple_element' | 'succeeded' |
+                   'succeeded' |
                    'timeout' |
                    'wait' | 'wait_timeout'.
 
@@ -117,7 +118,8 @@
 
 %% 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'.
+                      'copy' | 'put_tuple_arity' | 'put_tuple_element' |
+                      'set_tuple_element'.
 
 -import(lists, [foldl/3,keyfind/3,mapfoldl/3,member/2,reverse/1]).
 
@@ -142,7 +144,7 @@ add_anno(Key, Val, #b_switch{anno=Anno}=Bl) ->
 -spec get_anno(atom(), construct()) -> any().
 
 get_anno(Key, Construct) ->
-    maps:get(Key, get_anno(Construct)).
+    map_get(Key, get_anno(Construct)).
 
 -spec get_anno(atom(), construct(),any()) -> any().
 
@@ -303,7 +305,7 @@ normalize(#b_ret{}=Ret) ->
 -spec successors(label(), block_map()) -> [label()].
 
 successors(L, Blocks) ->
-    successors(maps:get(L, Blocks)).
+    successors(map_get(L, Blocks)).
 
 -spec def(Ls, Blocks) -> Def when
       Ls :: [label()],
@@ -312,7 +314,7 @@ successors(L, Blocks) ->
 
 def(Ls, Blocks) ->
     Top = rpo(Ls, Blocks),
-    Blks = [maps:get(L, Blocks) || L <- Top],
+    Blks = [map_get(L, Blocks) || L <- Top],
     def_1(Blks, []).
 
 -spec def_used(Ls, Blocks) -> {Def,Used} when
@@ -323,22 +325,45 @@ def(Ls, Blocks) ->
 
 def_used(Ls, Blocks) ->
     Top = rpo(Ls, Blocks),
-    Blks = [maps:get(L, Blocks) || L <- Top],
-    Preds = gb_sets:from_list(Top),
-    def_used_1(Blks, Preds, [], gb_sets:empty()).
+    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().
-
+      Result :: {dominator_map(), numbering_map()}.
 dominators(Blocks) ->
     Preds = predecessors(Blocks),
     Top0 = rpo(Blocks),
-    Top = [{L,maps:get(L, Preds)} || L <- Top0],
+    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.
-    iter_dominators(Top, #{}).
+    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()),
@@ -365,9 +390,9 @@ mapfold_blocks_rpo(Fun, From, Acc, Blocks) ->
           end, {Blocks, Acc}, Successors).
 
 mapfold_blocks_rpo_1(Fun, Lbl, {Blocks0, Acc0}) ->
-    Block0 = maps:get(Lbl, Blocks0),
+    Block0 = map_get(Lbl, Blocks0),
     {Block, Acc} = Fun(Lbl, Block0, Acc0),
-    Blocks = maps:put(Lbl, Block, Blocks0),
+    Blocks = Blocks0#{Lbl:=Block},
     {Blocks, Acc}.
 
 -spec mapfold_instrs_rpo(Fun, From, Acc0, Blocks0) -> {Blocks,Acc} when
@@ -581,7 +606,7 @@ used(_) -> [].
 -spec definitions(Blocks :: block_map()) -> definition_map().
 definitions(Blocks) ->
     fold_instrs_rpo(fun(#b_set{ dst = Var }=I, Acc) ->
-                            maps:put(Var, I, Acc);
+                            Acc#{Var => I};
                        (_Terminator, Acc) ->
                             Acc
                     end, [0], #{}, Blocks).
@@ -626,10 +651,10 @@ 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 = gb_sets:union(gb_sets:from_list(used(Last)), Used1),
+    Used = ordsets:union(used(Last), Used1),
     def_used_1(Bs, Preds, Def, Used);
 def_used_1([], _Preds, Def, Used) ->
-    {ordsets:from_list(Def),gb_sets:to_list(Used)}.
+    {ordsets:from_list(Def),Used}.
 
 def_used_is([#b_set{op=phi,dst=Dst,args=Args}|Is],
             Preds, Def0, Used0) ->
@@ -637,12 +662,12 @@ def_used_is([#b_set{op=phi,dst=Dst,args=Args}|Is],
     %% 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, gb_sets:is_member(L, Preds)],
-    Used = gb_sets:union(gb_sets:from_list(Used1), Used0),
+    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 = gb_sets:union(gb_sets:from_list(used(I)), Used0),
+    Used = ordsets:union(used(I), Used0),
     def_used_is(Is, Preds, Def, Used);
 def_used_is([], _Preds, Def, Used) ->
     {Def,Used}.
@@ -657,44 +682,67 @@ def_is([#b_set{dst=Dst}|Is], Def) ->
     def_is(Is, [Dst|Def]);
 def_is([], Def) -> Def.
 
-iter_dominators([{0,[]}|Ls], _Doms) ->
-    Dom = [0],
-    iter_dominators(Ls, #{0=>Dom});
-iter_dominators([{L,Preds}|Ls], Doms) ->
-    DomPreds = [maps:get(P, Doms) || P <- Preds, maps:is_key(P, Doms)],
-    Dom = ordsets:add_element(L, ordsets:intersection(DomPreds)),
-    iter_dominators(Ls, Doms#{L=>Dom});
-iter_dominators([], Doms) -> Doms.
+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 = maps:get(L, Blocks),
+    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} = maps:get(L, Blocks),
+    #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 = maps:get(L, Blocks0),
+    #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 = maps:put(L, Block, Blocks0),
+    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 = maps:get(L, Blocks0),
+    #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 = maps:put(L, Block, Blocks0),
+    Blocks = Blocks0#{L:=Block},
     flatmapfold_instrs_rpo_1(Ls, Fun, Blocks, Acc);
 flatmapfold_instrs_rpo_1([], _, Blocks, Acc) ->
     {Blocks,Acc}.
@@ -705,7 +753,7 @@ linearize_1([L|Ls], Blocks, Seen0, Acc0) ->
             linearize_1(Ls, Blocks, Seen0, Acc0);
         false ->
             Seen1 = cerl_sets:add_element(L, Seen0),
-            Block = maps:get(L, Blocks),
+            Block = map_get(L, Blocks),
             Successors = successors(Block),
             {Acc,Seen} = linearize_1(Successors, Blocks, Seen1, Acc0),
             linearize_1(Ls, Blocks, Seen, [{L,Block}|Acc])
@@ -745,7 +793,7 @@ rpo_1([L|Ls], Blocks, Seen0, Acc0) ->
         true ->
             rpo_1(Ls, Blocks, Seen0, Acc0);
         false ->
-            Block = maps:get(L, Blocks),
+            Block = map_get(L, Blocks),
             Seen1 = cerl_sets:add_element(L, Seen0),
             Successors = successors(Block),
             {Acc,Seen} = rpo_1(Successors, Blocks, Seen1, Acc0),
@@ -775,11 +823,11 @@ rename_phi_vars([{Var,L}|As], Preds, Ren) ->
 rename_phi_vars([], _, _) -> [].
 
 map_instrs_1([L|Ls], Fun, Blocks0) ->
-    #b_blk{is=Is0,last=Last0} = Blk0 = maps:get(L, 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 = maps:put(L, Blk, Blocks0),
+    Blocks = Blocks0#{L:=Blk},
     map_instrs_1(Ls, Fun, Blocks);
 map_instrs_1([], _, Blocks) -> Blocks.
 
@@ -790,7 +838,7 @@ flatmapfoldl(F, Accu0, [Hd|Tail]) ->
 flatmapfoldl(_, Accu, []) -> {[],Accu}.
 
 split_blocks_1([L|Ls], P, Blocks0, Count0) ->
-    #b_blk{is=Is0} = Blk = maps:get(L, Blocks0),
+    #b_blk{is=Is0} = Blk = map_get(L, Blocks0),
     case split_blocks_is(Is0, P, []) of
         {yes,Bef,Aft} ->
             NewLbl = Count0,
diff --git a/lib/compiler/src/beam_ssa_bsm.erl b/lib/compiler/src/beam_ssa_bsm.erl
index 9631bf3334..382e6f635e 100644
--- a/lib/compiler/src/beam_ssa_bsm.erl
+++ b/lib/compiler/src/beam_ssa_bsm.erl
@@ -300,7 +300,8 @@ get_fa(#b_function{ anno = Anno }) ->
                promotions = #{} :: promotion_map() }).
 
 alias_matched_binaries(Blocks0, Counter, AliasMap) when AliasMap =/= #{} ->
-    State0 = #amb{ dominators = beam_ssa:dominators(Blocks0),
+    {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,
@@ -347,7 +348,7 @@ amb_get_alias(#b_var{}=Arg, Lbl, State) ->
             %% 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 ordsets:is_element(AliasAfter, Dominators) of
+            case member(AliasAfter, Dominators) of
                 true -> amb_create_alias(Arg, Context, Lbl, State);
                 false -> {Arg, State}
             end;
@@ -444,6 +445,7 @@ combine_matches({Fs0, 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) ->
@@ -451,7 +453,7 @@ combine_matches(#b_function{bs=Blocks0,cnt=Counter0}=F, ModInfo) ->
                           {Block0#b_blk{is=Is}, State}
                   end, [0],
                   #cm{ definitions = beam_ssa:definitions(Blocks0),
-                       dominators = beam_ssa:dominators(Blocks0),
+                       dominators = Dominators,
                        blocks = Blocks0 },
                   Blocks0),
 
@@ -491,7 +493,7 @@ cm_handle_priors(Src, DstCtx, Bool, Acc, MatchSeq, Lbl, State0) ->
                         %% dominate us.
                         Dominators = maps:get(Lbl, State0#cm.dominators, []),
                         [Ctx || {ValidAfter, Ctx} <- Priors,
-                                ordsets:is_element(ValidAfter, Dominators)];
+                                member(ValidAfter, Dominators)];
                     error ->
                         []
                 end,
@@ -877,7 +879,8 @@ annotate_context_parameters(F, ModInfo) ->
                                  %% Assertion.
                                  error(conflicting_parameter_types);
                             (K, suitable_for_reuse, Acc) ->
-                                 Acc#{ K => match_context };
+                                 T = beam_validator:type_anno(match_context),
+                                 Acc#{ K => T };
                             (_K, _V, Acc) ->
                                  Acc
                          end, TypeAnno0, ParamInfo),
diff --git a/lib/compiler/src/beam_ssa_codegen.erl b/lib/compiler/src/beam_ssa_codegen.erl
index d3facc5911..c2d5035b19 100644
--- a/lib/compiler/src/beam_ssa_codegen.erl
+++ b/lib/compiler/src/beam_ssa_codegen.erl
@@ -161,7 +161,7 @@ add_parameter_annos([{label, _}=Entry | Body], Anno) ->
            (_K, _V, Acc) ->
                 Acc
         end, [], maps:get(registers, Anno)),
-    [Entry | Annos] ++ Body.
+    [Entry | sort(Annos)] ++ Body.
 
 cg_fun(Blocks, St0) ->
     Linear0 = linearize(Blocks),
@@ -1071,8 +1071,8 @@ cg_block([#cg_set{op={bif,Name},dst=Dst0,args=Args0}]=Is0, {Dst0,Fail}, St0) ->
         {z,_} ->
             %% The result of the BIF call will only be used once. Convert to
             %% a test instruction.
-            Test = bif_to_test(Name, Args, ensure_label(Fail, St0)),
-            {Test,St0};
+            {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.
@@ -1269,16 +1269,17 @@ cg_copy_1([], _St) -> [].
                           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('or', [V1,V2], {f,Lbl}=Fail) when Lbl =/= 0 ->
-    %% Labels are spaced 2 apart. We can create a new
-    %% label by incrementing the Fail label.
-    SuccLabel = Lbl + 1,
-    [{test,is_eq_exact,{f,SuccLabel},[V1,{atom,false}]},
-     {test,is_eq_exact,Fail,[V2,{atom,true}]},
-     {label,SuccLabel}];
 bif_to_test('not', [Var], Fail) ->
     [{test,is_eq_exact,Fail,[Var,{atom,false}]}];
 bif_to_test(Name, Args, Fail) ->
@@ -1448,7 +1449,12 @@ cg_call(#cg_set{anno=Anno,op=call,dst=Dst0,args=[#b_local{}=Func0|Args0]},
     Line = call_line(Where, local, Anno),
     Call = build_call(call, Arity, {f,FuncLbl}, Context, Dst),
     Is = setup_args(Args, Anno, Context, St) ++ Line ++ Call,
-    {Is,St};
+    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),
@@ -1724,6 +1730,14 @@ 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,[]}.
 
@@ -2017,9 +2031,7 @@ is_gc_bif(Bif, Args) ->
 %% new_label(St) -> {L,St}.
 
 new_label(#cg{lcount=Next}=St) ->
-    %% Advance the label counter by 2 to allow us to create
-    %% a label for 'or' by incrementing an existing label.
-    {Next,St#cg{lcount=Next+2}}.
+    {Next,St#cg{lcount=Next+1}}.
 
 %% call_line(tail|body, Func, Anno) -> [] | [{line,...}].
 %%  Produce a line instruction if it will be needed by the
diff --git a/lib/compiler/src/beam_ssa_dead.erl b/lib/compiler/src/beam_ssa_dead.erl
index 067d9a6741..2cca9ebadf 100644
--- a/lib/compiler/src/beam_ssa_dead.erl
+++ b/lib/compiler/src/beam_ssa_dead.erl
@@ -181,9 +181,9 @@ shortcut_2(L, Bs0, UnsetVars0, St) ->
                     %% We have a potentially suitable br.
                     %% Now update the set of variables that will never
                     %% be set if this block will be skipped.
-                    UnsetVars1 = [V || #b_set{dst=V} <- Is],
-                    UnsetVars = ordsets:union(UnsetVars0,
-                                              ordsets:from_list(UnsetVars1)),
+                    SetInThisBlock = [V || #b_set{dst=V} <- Is],
+                    UnsetVars = update_unset_vars(L, Br, SetInThisBlock,
+                                                  UnsetVars0, St),
 
                     %% Continue checking whether this br is suitable.
                     shortcut_3(Br, Bs#{from:=L}, UnsetVars, St)
@@ -296,6 +296,37 @@ shortcut_3(Br, Bs, UnsetVars, #st{target=Target}=St) ->
             end
     end.
 
+update_unset_vars(L, Br, SetInThisBlock, 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. We can speed up compilation by avoiding
+            %% adding variables to the UnsetVars if the presence of
+            %% those variable would not change the outcome of the
+            %% tests in is_br_safe/2.
+            case Br of
+                #b_br{bool=Bool} ->
+                    case member(Bool, SetInThisBlock) of
+                        true ->
+                            %% Bool is a variable defined in this
+                            %% block. It will change the outcome of
+                            %% the `not member(V, UnsetVars)` check in
+                            %% is_br_safe/2. The other variables
+                            %% defined in this block will not.
+                            ordsets:add_element(Bool, UnsetVars);
+                        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
+            end;
+        false ->
+            ordsets:union(UnsetVars, ordsets:from_list(SetInThisBlock))
+    end.
+
 shortcut_two_way(#b_br{succ=Succ,fail=Fail}, Bs0, UnsetVars0, St) ->
     case shortcut_2(Succ, Bs0, UnsetVars0, St#st{target=Fail}) of
         {#b_br{bool=#b_literal{},succ=Fail},_,_}=Res ->
@@ -344,7 +375,7 @@ is_forbidden(L, St) ->
 %% any instruction with potential side effects.
 
 eval_is([#b_set{op=phi,dst=Dst,args=Args}|Is], Bs0, St) ->
-    From = maps:get(from, Bs0),
+    From = map_get(from, Bs0),
     [Val] = [Val || {Val,Pred} <- Args, Pred =:= From],
     Bs = bind_var(Dst, Val, Bs0),
     eval_is(Is, Bs, St);
@@ -795,7 +826,7 @@ combine_eqs_1([L|Ls], #st{bs=Blocks0}=St0) ->
                             %% Everything OK! Combine the lists.
                             Sw0 = #b_switch{arg=Arg,fail=Fail,list=List},
                             Sw = beam_ssa:normalize(Sw0),
-                            Blk0 = maps:get(L, Blocks0),
+                            Blk0 = map_get(L, Blocks0),
                             Blk = Blk0#b_blk{last=Sw},
                             Blocks = Blocks0#{L:=Blk},
                             St = St0#st{bs=Blocks},
@@ -819,8 +850,8 @@ 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}=St) ->
-    #b_blk{is=Is,last=Last} = maps:get(L, 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{} ->
@@ -834,8 +865,8 @@ comb_get_sw(L, Safe0, #st{bs=Blocks,skippable=Skippable}=St) ->
                 {#b_set{},_} ->
                     none
             end;
-        #b_br{bool=#b_literal{val=true},succ=Succ} ->
-            comb_get_sw(Succ, Safe1, St);
+        #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}
@@ -915,15 +946,15 @@ used_vars([{L,#b_blk{is=Is}=Blk}|Bs], UsedVars0, Skip0) ->
     %% shortcut_opt/1.
 
     Successors = beam_ssa:successors(Blk),
-    Used0 = used_vars_succ(Successors, L, UsedVars0),
+    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).
+    %% 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),
@@ -938,19 +969,22 @@ used_vars([{L,#b_blk{is=Is}=Blk}|Bs], UsedVars0, Skip0) ->
 used_vars([], UsedVars, Skip) ->
     {UsedVars,Skip}.
 
-used_vars_succ([S|Ss], L, UsedVars) ->
-    Live0 = used_vars_succ(Ss, L, UsedVars),
+used_vars_succ([S|Ss], L, LiveMap, Live0) ->
     Key = {S,L},
-    case UsedVars of
+    case LiveMap of
         #{Key:=Live} ->
-            ordsets:union(Live, Live0);
+            %% 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} ->
-            ordsets:union(Live, Live0);
+            %% 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));
         #{} ->
-            Live0
+            %% A peek_message block which has not been processed yet.
+            used_vars_succ(Ss, L, LiveMap, Live0)
     end;
-used_vars_succ([], _, _) ->
-    ordsets:new().
+used_vars_succ([], _, _, Acc) -> Acc.
 
 used_vars_phis(Is, L, Live0, UsedVars0) ->
     UsedVars = UsedVars0#{L=>Live0},
diff --git a/lib/compiler/src/beam_ssa_funs.erl b/lib/compiler/src/beam_ssa_funs.erl
index 38df50fd74..e77c00fa89 100644
--- a/lib/compiler/src/beam_ssa_funs.erl
+++ b/lib/compiler/src/beam_ssa_funs.erl
@@ -47,14 +47,14 @@ module(#b_module{body=Fs0}=Module, _Opts) ->
 %% 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 maps:get(0, Blocks) of
+    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},
-            maps:put(Trampoline, Actual, Trampolines);
+            Trampolines#{Trampoline => Actual};
         _ ->
             Trampolines
     end.
@@ -80,7 +80,7 @@ lfo_analyze_is([#b_set{op=make_fun,
 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]} = maps:get(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));
@@ -133,7 +133,7 @@ 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]} = maps:get(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)];
diff --git a/lib/compiler/src/beam_ssa_opt.erl b/lib/compiler/src/beam_ssa_opt.erl
index 2dda67eac6..f8e19d0aa7 100644
--- a/lib/compiler/src/beam_ssa_opt.erl
+++ b/lib/compiler/src/beam_ssa_opt.erl
@@ -18,64 +18,167 @@
 %% %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.hrl").
--import(lists, [all/2,append/1,foldl/3,keyfind/3,member/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,takewhile/2,unzip/1]).
+                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()}.
 
-module(#b_module{body=Fs0}=Module, Opts) ->
-    Ps = passes(Opts),
-    Fs = functions(Fs0, Ps),
-    {ok,Module#b_module{body=Fs}}.
+-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)}],
 
-functions([F|Fs], Ps) ->
-    [function(F, Ps)|functions(Fs, Ps)];
-functions([], _Ps) -> [].
+    {StMap, _FuncDb} = foldl(fun({FuncIds, Ps}, {StMap, FuncDb}) ->
+                                     phase(FuncIds, Ps, StMap, FuncDb)
+                             end, {StMap0, FuncDb0}, Phases),
 
--type b_blk() :: beam_ssa:b_blk().
--type b_var() :: beam_ssa:b_var().
--type label() :: beam_ssa:label().
+    {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) ->
+    [].
+
+%%
 
--record(st, {ssa :: beam_ssa:block_map() | [{label(),b_blk()}],
-             args :: [b_var()],
-             cnt :: label()}).
 -define(PASS(N), {N,fun N/1}).
 
-passes(Opts0) ->
+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),
-
-          %% Run ssa_opt_cse twice, because it will help ssa_opt_dead,
-          %% and ssa_opt_dead will help ssa_opt_cse. Run ssa_opt_live
-          %% twice, because it will help ssa_opt_dead and ssa_opt_dead
-          %% will help ssa_opt_live.
-          ?PASS(ssa_opt_cse),
-          ?PASS(ssa_opt_type),
-          ?PASS(ssa_opt_live),
+          ?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),                   %Second time.
+          ?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_live),                  %Second time.
+          ?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_misc),
-          ?PASS(ssa_opt_tuple_size),
-          ?PASS(ssa_opt_sw),
           ?PASS(ssa_opt_blockify),
           ?PASS(ssa_opt_sink),
           ?PASS(ssa_opt_merge_blocks),
           ?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),
@@ -87,36 +190,127 @@ passes(Opts0) ->
              {NoName,fun(S) -> S end}
      end || {Name,_}=P <- Ps].
 
-function(#b_function{anno=Anno,bs=Blocks0,args=Args,cnt=Count0}=F, 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
-        St = #st{ssa=Blocks0,args=Args,cnt=Count0},
-        #st{ssa=Blocks,cnt=Count} = compile:run_sub_passes(Ps, St),
-        F#b_function{bs=Blocks,cnt=Count}
+        fdb_1(Fs, gb_sets:from_list(Exports), #{})
     catch
-        Class:Error:Stack ->
-            #{func_info:={_,Name,Arity}} = Anno,
-            io:fwrite("Function: ~w/~w\n", [Name,Arity]),
-            erlang:raise(Class, Error, Stack)
+        %% 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) ->
-    St#st{ssa=beam_ssa_dead:opt(Linear)}.
+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_linearize(#st{ssa=Blocks}=St) ->
-    St#st{ssa=beam_ssa:linearize(Blocks)}.
+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(#st{ssa=Linear,args=Args}=St) ->
-    St#st{ssa=beam_ssa_type:opt(Linear, Args)}.
+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_blockify(#st{ssa=Linear}=St) ->
-    St#st{ssa=maps:from_list(Linear)}.
+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_trim_unreachable(#st{ssa=Blocks}=St) ->
-    St#st{ssa=beam_ssa:trim_unreachable(Blocks)}.
+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.
@@ -128,14 +322,14 @@ ssa_opt_trim_unreachable(#st{ssa=Blocks}=St) ->
 %%% for sinking get_tuple_element instructions.
 %%%
 
-ssa_opt_split_blocks(#st{ssa=Blocks0,cnt=Count0}=St) ->
+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}.
+    {St#st{ssa=Blocks,cnt=Count}, FuncDb}.
 
 %%%
 %%% Coalesce phi nodes.
@@ -159,13 +353,13 @@ ssa_opt_split_blocks(#st{ssa=Blocks0,cnt=Count0}=St) ->
 %%% different registers).
 %%%
 
-ssa_opt_coalesce_phis(#st{ssa=Blocks0}=St) ->
+ssa_opt_coalesce_phis({#st{ssa=Blocks0}=St, FuncDb}) ->
     Ls = beam_ssa:rpo(Blocks0),
     Blocks = c_phis_1(Ls, Blocks0),
-    St#st{ssa=Blocks}.
+    {St#st{ssa=Blocks}, FuncDb}.
 
 c_phis_1([L|Ls], Blocks0) ->
-    case maps:get(L, Blocks0) of
+    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);
@@ -204,7 +398,7 @@ c_phis_args_1([{Var,Pred}|As], Blocks) ->
 c_phis_args_1([], _Blocks) -> none.
 
 c_get_pred_vars(Var, Pred, Blocks) ->
-    case maps:get(Pred, Blocks) of
+    case map_get(Pred, Blocks) of
         #b_blk{is=[#b_set{op=phi,dst=Var,args=Args}]} ->
             {Var,Pred,Args};
         #b_blk{} ->
@@ -225,7 +419,7 @@ c_rewrite_phi([A|As], Info) ->
 c_rewrite_phi([], _Info) -> [].
 
 c_fix_branches([{_,Pred}|As], L, Blocks0) ->
-    #b_blk{last=Last0} = Blk0 = maps:get(Pred, 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},
@@ -234,6 +428,160 @@ c_fix_branches([{_,Pred}|As], L, Blocks0) ->
 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
@@ -242,7 +590,7 @@ c_fix_branches([], _, Blocks) -> Blocks.
 %%% be replaced with get_tuple_element/3 instructions.
 %%%
 
-ssa_opt_element(#st{ssa=Blocks}=St) ->
+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)),
@@ -254,7 +602,7 @@ ssa_opt_element(#st{ssa=Blocks}=St) ->
 
     %% For each chain, swap the first element call with the
     %% element call with the highest index.
-    St#st{ssa=swap_element_calls(Chains, Blocks)}.
+    {St#st{ssa=swap_element_calls(Chains, Blocks)}, FuncDb}.
 
 collect_element_calls([{L,#b_blk{is=Is0,last=Last}}|Bs]) ->
     case {Is0,Last} of
@@ -315,9 +663,9 @@ swap_element_calls_1([], _, Blocks) ->
 %%% when applicable.
 %%%
 
-ssa_opt_record(#st{ssa=Linear}=St) ->
+ssa_opt_record({#st{ssa=Linear}=St, FuncDb}) ->
     Blocks = maps:from_list(Linear),
-    St#st{ssa=record_opt(Linear, Blocks)}.
+    {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),
@@ -341,7 +689,7 @@ record_opt_is([], _Last, _Blocks) -> [].
 is_tagged_tuple(#b_var{}=Tuple, Bool,
                 #b_br{bool=Bool,succ=Succ,fail=Fail},
                 Blocks) ->
-    SuccBlk = maps:get(Succ, Blocks),
+    SuccBlk = map_get(Succ, Blocks),
     is_tagged_tuple_1(SuccBlk, Tuple, Fail, Blocks);
 is_tagged_tuple(_, _, _, _) -> no.
 
@@ -355,7 +703,7 @@ is_tagged_tuple_1(#b_blk{is=Is,last=Last}, Tuple, Fail, Blocks) ->
         when is_integer(ArityVal) ->
             case Last of
                 #b_br{bool=Bool,succ=Succ,fail=Fail} ->
-                    SuccBlk = maps:get(Succ, Blocks),
+                    SuccBlk = map_get(Succ, Blocks),
                     case is_tagged_tuple_2(SuccBlk, Tuple, Fail) of
                         no ->
                             no;
@@ -401,12 +749,12 @@ is_tagged_tuple_4([], _, _) -> no.
 %%% subexpressions across instructions that clobber the X registers.
 %%%
 
-ssa_opt_cse(#st{ssa=Linear}=St) ->
+ssa_opt_cse({#st{ssa=Linear}=St, FuncDb}) ->
     M = #{0=>#{}},
-    St#st{ssa=cse(Linear, #{}, M)}.
+    {St#st{ssa=cse(Linear, #{}, M)}, FuncDb}.
 
 cse([{L,#b_blk{is=Is0,last=Last0}=Blk}|Bs], Sub0, M0) ->
-    Es0 = maps:get(L, 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),
@@ -544,13 +892,13 @@ cse_suitable(#b_set{}) -> false.
          bs :: beam_ssa:block_map()
         }).
 
-ssa_opt_float(#st{ssa=Linear0,cnt=Count0}=St) ->
+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}.
+    {St#st{ssa=Linear,cnt=Count}, FuncDb}.
 
 float_non_guards([{L,#b_blk{is=Is}}|Bs]) ->
     case Is of
@@ -651,7 +999,7 @@ float_conv([{L,#b_blk{is=Is0}=Blk0}|Bs0], Fail, Count0) ->
 
 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,
-    #b_blk{is=Is} = maps:get(Succ, Blocks),
+    #b_blk{is=Is} = map_get(Succ, Blocks),
     case Is of
         [#b_set{anno=#{float_op:=_}}|_] ->
             %% The next operation is also a floating point operation.
@@ -788,35 +1136,38 @@ float_flush_regs(#fs{regs=Rs}) ->
 %%% with a cheaper instructions
 %%%
 
-ssa_opt_live(#st{ssa=Linear0}=St) ->
+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}.
+    {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),
+    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 = live_opt_succ(Ss, L, LiveMap),
+live_opt_succ([S|Ss], L, LiveMap, Live0) ->
     Key = {S,L},
     case LiveMap of
         #{Key:=Live} ->
-            gb_sets:union(Live, Live0);
+            %% 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} ->
-            gb_sets:union(Live, Live0);
+            %% 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));
         #{} ->
-            Live0
+            %% A peek_message block which has not been processed yet.
+            live_opt_succ(Ss, L, LiveMap, Live0)
     end;
-live_opt_succ([], _, _) ->
-    gb_sets:empty().
+live_opt_succ([], _, _, Acc) -> Acc.
 
 live_opt_phis(Is, L, Live0, LiveMap0) ->
     LiveMap = LiveMap0#{L=>Live0},
@@ -855,14 +1206,9 @@ live_opt_is([#b_set{op=succeeded,dst=SuccDst=SuccDstVar,
              #b_set{dst=Dst}=I|Is], Live0, Acc) ->
     case gb_sets:is_member(Dst, Live0) of
         true ->
-            case gb_sets:is_member(SuccDst, 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 ->
-                    live_opt_is([I|Is], Live0, Acc)
-            end;
+            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} ->
@@ -872,7 +1218,7 @@ live_opt_is([#b_set{op=succeeded,dst=SuccDst=SuccDstVar,
                     case gb_sets:is_member(SuccDst, Live0) of
                         true ->
                             Live1 = gb_sets:add(Dst, Live0),
-                            Live = gb_sets:delete_any(SuccDst, Live1),
+                            Live = gb_sets:delete(SuccDst, Live1),
                             live_opt_is([I|Is], Live, [SuccI|Acc]);
                         false ->
                             live_opt_is([I|Is], Live0, Acc)
@@ -883,7 +1229,7 @@ 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_any(Dst, Live1),
+            Live = gb_sets:delete(Dst, Live1),
             live_opt_is(Is, Live, [I|Acc]);
         false ->
             case beam_ssa:no_side_effect(I) of
@@ -902,24 +1248,32 @@ live_opt_unused(#b_set{op=get_map_element}=Set) ->
 live_opt_unused(_) -> keep.
 
 %%%
-%%% Optimize binary matching instructions.
+%%% 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) ->
+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)}.
+    {St#st{ssa=bsm_skip(Linear, Extracted)}, FuncDb}.
 
-bsm_skip([{L,#b_blk{is=Is0}=Blk}|Bs], Extracted) ->
+bsm_skip([{L,#b_blk{is=Is0}=Blk}|Bs0], Extracted) ->
+    Bs = bsm_skip(Bs0, Extracted),
     Is = bsm_skip_is(Is0, Extracted),
-    [{L,Blk#b_blk{is=Is}}|bsm_skip(Bs, 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,args=[#b_literal{val=string}|_]} ->
-            [I0|bsm_skip_is(Is, Extracted)];
-        #b_set{op=bs_match,dst=Ctx,args=[Type,PrevCtx|Args0]} ->
+        #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;
@@ -943,18 +1297,75 @@ bsm_extracted([{_,#b_blk{is=Is}}|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) ->
+ssa_opt_bsm_shortcut({#st{ssa=Linear}=St, FuncDb}) ->
     Positions = bsm_positions(Linear, #{}),
     case map_size(Positions) of
         0 ->
             %% No binary matching instructions.
-            St;
+            {St, FuncDb};
         _ ->
-            St#st{ssa=bsm_shortcut(Linear, Positions)}
+            {St#st{ssa=bsm_shortcut(Linear, Positions)}, FuncDb}
     end.
 
 bsm_positions([{L,#b_blk{is=Is,last=Last}}|Bs], PosMap0) ->
@@ -962,7 +1373,7 @@ bsm_positions([{L,#b_blk{is=Is,last=Last}}|Bs], 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 + maps:get(Ctx, PosMap0),
+            Bits = Bits0 + map_get(Ctx, PosMap0),
             bsm_positions(Bs, PosMap#{L=>{Bits,Fail}});
         {_,_} ->
             bsm_positions(Bs, PosMap)
@@ -1016,8 +1427,8 @@ bsm_shortcut([], _PosMap) -> [].
 %%% Eliminate redundant bs_test_unit2 instructions.
 %%%
 
-ssa_opt_bsm_units(#st{ssa=Linear}=St) ->
-    St#st{ssa=bsm_units(Linear, #{})}.
+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, #{}),
@@ -1054,7 +1465,7 @@ bsm_units_skip_1([#b_set{op=bs_match,
                  Block0, Units) ->
     [#b_set{op=succeeded,dst=Bool,args=[New]}] = Test, %Assertion.
     #b_br{bool=Bool} = Last0 = Block0#b_blk.last, %Assertion.
-    CtxUnit = maps:get(Ctx, Units),
+    CtxUnit = map_get(Ctx, Units),
     if
         CtxUnit rem OpUnit =:= 0 ->
             Is = takewhile(fun(I) -> I =/= Skip end, Block0#b_blk.is),
@@ -1066,7 +1477,7 @@ bsm_units_skip_1([#b_set{op=bs_match,
     end;
 bsm_units_skip_1([#b_set{op=bs_match,dst=New,args=Args}|_], Block, Units) ->
     [_,Ctx|_] = Args,
-    CtxUnit = maps:get(Ctx, Units),
+    CtxUnit = map_get(Ctx, Units),
     OpUnit = bsm_op_unit(Args),
     {Block, Units#{ New => gcd(OpUnit, CtxUnit) }};
 bsm_units_skip_1([_I | Is], Block, Units) ->
@@ -1094,114 +1505,195 @@ bsm_op_unit(_) ->
 %% 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 = maps:get(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,
-    maps:put(Lbl, Merged, UnitMaps0);
+    UnitMaps0#{Lbl := Merged};
 bsm_units_join(Lbl, MapA, UnitMaps0) when MapA =/= #{} ->
-    maps:put(Lbl, MapA, UnitMaps0);
+    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 = maps:get(Key, Left),
-    UnitB = maps:get(Key, Right),
-    bsm_units_join_1(Keys, Left, maps:put(Key, gcd(UnitA, UnitB), Right));
+    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.
 
 %%%
-%%% Miscellanous optimizations in execution order.
+%%% 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_misc(#st{ssa=Linear}=St) ->
-    St#st{ssa=misc_opt(Linear, #{})}.
+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}.
 
-misc_opt([{L,#b_blk{is=Is0,last=Last0}=Blk0}|Bs], Sub0) ->
-    {Is,Sub} = misc_opt_is(Is0, Sub0, []),
-    Last = sub(Last0, Sub),
-    Blk = Blk0#b_blk{is=Is,last=Last},
-    [{L,Blk}|misc_opt(Bs, Sub)];
-misc_opt([], _) -> [].
+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}.
 
-misc_opt_is([#b_set{op=phi}=I0|Is], Sub0, Acc) ->
-    #b_set{dst=Dst,args=Args} = I = sub(I0, Sub0),
-    case all_same(Args) of
+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 ->
-            %% Eliminate the phi node if there is just one source
-            %% value or if the values are identical.
-            [{Val,_}|_] = Args,
-            Sub = Sub0#{Dst=>Val},
-            misc_opt_is(Is, Sub, Acc);
-        false ->
-            misc_opt_is(Is, Sub0, [I|Acc])
-    end;
-misc_opt_is([#b_set{op={bif,'and'}}=I0], Sub, Acc) ->
-    #b_set{dst=Dst,args=Args} = I = sub(I0, Sub),
-    case eval_and(Args) of
-        error ->
-            misc_opt_is([], Sub, [I|Acc]);
-        Val ->
-            misc_opt_is([], Sub#{Dst=>Val}, Acc)
-    end;
-misc_opt_is([#b_set{op={bif,'or'}}=I0], Sub, Acc) ->
-    #b_set{dst=Dst,args=Args} = I = sub(I0, Sub),
-    case eval_or(Args) of
-        error ->
-            misc_opt_is([], Sub, [I|Acc]);
-        Val ->
-            misc_opt_is([], Sub#{Dst=>Val}, Acc)
+            not_possible
     end;
-misc_opt_is([#b_set{}=I0|Is], Sub, Acc) ->
-    #b_set{op=Op,dst=Dst,args=Args} = I = sub(I0, Sub),
-    case make_literal(Op, Args) of
-        #b_literal{}=Literal ->
-            misc_opt_is(Is, Sub#{Dst=>Literal}, Acc);
-        error ->
-            misc_opt_is(Is, Sub, [I|Acc])
-    end;
-misc_opt_is([], Sub, Acc) ->
-    {reverse(Acc),Sub}.
-
-all_same([{H,_}|T]) ->
-    all(fun({E,_}) -> E =:= H end, T).
-
-make_literal(put_tuple, Args) ->
-    case make_literal_list(Args, []) of
-        error ->
-            error;
-        List ->
-            #b_literal{val=list_to_tuple(List)}
+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;
-make_literal(put_list, [#b_literal{val=H},#b_literal{val=T}]) ->
-    #b_literal{val=[H|T]};
-make_literal(_, _) -> error.
-
-make_literal_list([#b_literal{val=H}|T], Acc) ->
-    make_literal_list(T, [H|Acc]);
-make_literal_list([_|_], _) ->
-    error;
-make_literal_list([], Acc) ->
-    reverse(Acc).
-
-eval_and(Args) ->
-    case Args of
-        [_,#b_literal{val=false}=Res] -> Res;
-        [Res,#b_literal{val=true}] -> Res;
-        [_,_] -> error
+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.
 
-eval_or(Args) ->
-    case Args of
-        [Res,#b_literal{val=false}] -> Res;
-        [_,#b_literal{val=true}=Res] -> Res;
-        [_,_] -> error
+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.
 
 %%%
@@ -1264,9 +1756,9 @@ eval_or(Args) ->
 %%% is_tuple_of_arity instruction by the loader.
 %%%
 
-ssa_opt_tuple_size(#st{ssa=Linear0,cnt=Count0}=St) ->
+ssa_opt_tuple_size({#st{ssa=Linear0,cnt=Count0}=St, FuncDb}) ->
     {Linear,Count} = opt_tup_size(Linear0, Count0, []),
-    St#st{ssa=Linear,cnt=Count}.
+    {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
@@ -1339,13 +1831,17 @@ opt_tup_size_is([], _, _, _Acc) -> none.
 %%% is 'true' or 'false' can be rewritten to a is_boolean test.
 %%%
 
-ssa_opt_sw(#st{ssa=Linear0,cnt=Count0}=St) ->
-    {Linear,Count} = opt_sw(Linear0, #{}, Count0, []),
-    St#st{ssa=Linear,cnt=Count}.
+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{}=Last0}=Blk0}|Bs], Phis0, Count0, Acc) ->
-    Phis = opt_sw_phis(Is, Phis0),
-    case opt_sw_last(Last0, Phis) of
+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}},
@@ -1353,7 +1849,7 @@ opt_sw([{L,#b_blk{is=Is,last=#b_switch{}=Last0}=Blk0}|Bs], Phis0, Count0, Acc) -
             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, Phis, Count, [{L,Blk}|Acc]);
+            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 ->
@@ -1363,78 +1859,26 @@ opt_sw([{L,#b_blk{is=Is,last=#b_switch{}=Last0}=Blk0}|Bs], Phis0, Count0, Acc) -
             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, Phis, Count, [{L,Blk}|Acc]);
-        Last0 ->
-            opt_sw(Bs, Phis, Count0, [{L,Blk0}|Acc]);
-        Last ->
-            Blk = Blk0#b_blk{last=Last},
-            opt_sw(Bs, Phis, Count0, [{L,Blk}|Acc])
+            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{is=Is}=Blk}|Bs], Phis0, Count, Acc) ->
-    Phis = opt_sw_phis(Is, Phis0),
-    opt_sw(Bs, Phis, Count, [{L,Blk}|Acc]);
-opt_sw([], _Phis, Count, Acc) ->
+opt_sw([{L,#b_blk{}=Blk}|Bs], Count, Acc) ->
+    opt_sw(Bs, Count, [{L,Blk}|Acc]);
+opt_sw([], Count, Acc) ->
     {reverse(Acc),Count}.
 
-opt_sw_phis([#b_set{op=phi,dst=Dst,args=Args}|Is], Phis) ->
-    case opt_sw_literals(Args, []) of
-        error ->
-            opt_sw_phis(Is, Phis);
-        Literals ->
-            opt_sw_phis(Is, Phis#{Dst=>Literals})
-    end;
-opt_sw_phis(_, Phis) -> Phis.
-
-opt_sw_last(#b_switch{arg=Arg,fail=Fail,list=List0}=Sw0, Phis) ->
-    case Phis of
-        #{Arg:=Values0} ->
-            Values = gb_sets:from_list(Values0),
-
-            %% Prune the switch list to only contain the possible values.
-            List1 = [P || {Lit,_}=P <- List0, gb_sets:is_member(Lit, Values)],
-
-            %% Now test whether the failure label can ever be reached.
-            Sw = case gb_sets:size(Values) =:= length(List1) of
-                     true ->
-                         %% The switch list has the same number of values as the phi node.
-                         %% The values must be the same, because the values that were not
-                         %% possible were pruned from the switch list. Therefore, the
-                         %% failure label can't possibly be reached, and we can choose a
-                         %% a new failure label by picking a value from the list.
-                         case List1 of
-                             [{#b_literal{},Lbl}|List] ->
-                                 Sw0#b_switch{fail=Lbl,list=List};
-                             [] ->
-                                 Sw0#b_switch{list=List1}
-                         end;
-                     false ->
-                         %% There are some values in the phi node that are not in the
-                         %% switch list; thus, the failure label can still be reached.
-                         Sw0
-                 end,
-            beam_ssa:normalize(Sw);
-        #{} ->
-            %% Ensure that no label in the switch list is the same
-            %% as the failure label.
-            List = [{Val,Lbl} || {Val,Lbl} <- List0, Lbl =/= Fail],
-            Sw = Sw0#b_switch{list=List},
-            beam_ssa:normalize(Sw)
-    end.
-
-opt_sw_literals([{#b_literal{}=Lit,_}|T], Acc) ->
-    opt_sw_literals(T, [Lit|Acc]);
-opt_sw_literals([_|_], _Acc) ->
-    error;
-opt_sw_literals([], Acc) -> Acc.
-
-
 %%%
 %%% Merge blocks.
 %%%
 
-ssa_opt_merge_blocks(#st{ssa=Blocks}=St) ->
+ssa_opt_merge_blocks({#st{ssa=Blocks}=St, FuncDb}) ->
     Preds = beam_ssa:predecessors(Blocks),
-    St#st{ssa=merge_blocks_1(beam_ssa:rpo(Blocks), Preds, 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
@@ -1444,10 +1888,11 @@ merge_blocks_1([L|Ls], Preds0, Blocks0) ->
                 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 = maps:put(P, Blk, Blocks1),
+                    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),
@@ -1461,21 +1906,32 @@ merge_blocks_1([L|Ls], Preds0, Blocks0) ->
 merge_blocks_1([], _Preds, Blocks) -> Blocks.
 
 merge_update_preds([L|Ls], From, To, Preds0) ->
-    Ps = [rename_label(P, From, To) || P <- maps:get(L, Preds0)],
-    Preds = maps:put(L, Ps, 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.
 
-is_merge_allowed(_, _, #b_blk{is=[#b_set{op=peek_message}|_]}) ->
+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, Blk0, #b_blk{}) ->
-    case beam_ssa:successors(Blk0) of
+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.
+    end;
+is_merge_allowed(_, #b_blk{last=#b_switch{}}, #b_blk{}) ->
+    false.
 
 %%%
 %%% When a tuple is matched, the pattern matching compiler generates a
@@ -1493,19 +1949,27 @@ is_merge_allowed(L, Blk0, #b_blk{}) ->
 %%% extracted values.
 %%%
 
-ssa_opt_sink(#st{ssa=Blocks0}=St) ->
+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.
-    Defs = maps:from_list(def_blocks(Linear)),
+    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.
-    Dom0 = beam_ssa:dominators(Blocks0),
+    {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
@@ -1513,25 +1977,15 @@ ssa_opt_sink(#st{ssa=Blocks0}=St) ->
     %% unsafe moves, pretend that the unsuitable blocks are not
     %% dominators.
     Unsuitable = unsuitable(Linear, Blocks0),
-    Dom = case gb_sets:is_empty(Unsuitable) of
-              true ->
-                  Dom0;
-              false ->
-                  F = fun(_, DomBy) ->
-                              [L || L <- DomBy,
-                                    not gb_sets:is_element(L, Unsuitable)]
-                      end,
-                  maps:map(F, Dom0)
-          end,
 
     %% 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),
+    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 = maps:get(V, Defs),
+                           From = map_get(V, Defs),
                            move_defs(V, From, To, A)
                    end, Blocks0, DefLoc),
     St#st{ssa=Blocks}.
@@ -1601,11 +2055,11 @@ unsuitable_loop(L, Blocks, Predecessors) ->
     unsuitable_loop(L, Blocks, Predecessors, []).
 
 unsuitable_loop(L, Blocks, Predecessors, Acc) ->
-    Ps = maps:get(L, Predecessors),
+    Ps = map_get(L, Predecessors),
     unsuitable_loop_1(Ps, Blocks, Predecessors, Acc).
 
 unsuitable_loop_1([P|Ps], Blocks, Predecessors, Acc0) ->
-    case maps:get(P, Blocks) of
+    case map_get(P, Blocks) of
         #b_blk{is=[#b_set{op=peek_message}|_]} ->
             unsuitable_loop_1(Ps, Blocks, Predecessors, Acc0);
         #b_blk{} ->
@@ -1620,50 +2074,42 @@ unsuitable_loop_1([P|Ps], Blocks, Predecessors, Acc0) ->
     end;
 unsuitable_loop_1([], _, _, Acc) -> Acc.
 
-%% new_def_locations([{Variable,[UsedInBlock]}|Vs], Defs, Dominators) ->
-%%          [{Variable,NewDefinitionBlock}]
-%%  Calculate new locations for get_tuple_element instructions. For each
-%%  variable, the new location is a block that dominates all uses of
-%%  variable and as near to the uses of as possible. If no such block
-%%  distinct from the block where the instruction currently is, the
-%%  variable will not be included in the result list.
-
-new_def_locations([{V,UsedIn}|Vs], Defs, Dom) ->
-    DefIn = maps:get(V, Defs),
-    case common_dom(UsedIn, DefIn, Dom) of
-        [] ->
-            new_def_locations(Vs, Defs, Dom);
-        [_|_]=BetterDef ->
-            L = most_dominated(BetterDef, Dom),
-            [{V,L}|new_def_locations(Vs, Defs, Dom)]
-    end;
-new_def_locations([], _, _) -> [].
-
-common_dom([L|Ls], DefIn, Dom) ->
-    DomBy0 = maps:get(L, Dom),
-    DomBy = ordsets:subtract(DomBy0, maps:get(DefIn, Dom)),
-    common_dom_1(Ls, Dom, DomBy).
-
-common_dom_1(_, _, []) ->
-    [];
-common_dom_1([L|Ls], Dom, [_|_]=DomBy0) ->
-    DomBy1 = maps:get(L, Dom),
-    DomBy = ordsets:intersection(DomBy0, DomBy1),
-    common_dom_1(Ls, Dom, DomBy);
-common_dom_1([], _, DomBy) -> DomBy.
-
-most_dominated([L|Ls], Dom) ->
-    most_dominated(Ls, L, maps:get(L, Dom), Dom).
-
-most_dominated([L|Ls], L0, DomBy, Dom) ->
-    case member(L, DomBy) of
+%% 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 ->
-            most_dominated(Ls, L0, DomBy, Dom);
+            %% The common dominator is either DefIn or an
+            %% ancestor of DefIn.
+            new_def_locations(Vs, Defs, Dom, Numbering, Unsuitable);
         false ->
-            most_dominated(Ls, L, maps:get(L, Dom), Dom)
+            %% 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;
-most_dominated([], L, _, _) -> L.
+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.
 
@@ -1703,7 +2149,6 @@ insert_def_is([#b_set{op=Op}=I|Is]=Is0, V, Def) ->
     Action0 = case Op of
                   call -> beyond;
                   'catch_end' -> beyond;
-                  set_tuple_element -> beyond;
                   timeout -> beyond;
                   _ -> here
               end,
@@ -1769,3 +2214,9 @@ sub_arg(Old, Sub) ->
         #{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_pre_codegen.erl b/lib/compiler/src/beam_ssa_pre_codegen.erl
index 32232e9b9f..bad43a9c4e 100644
--- a/lib/compiler/src/beam_ssa_pre_codegen.erl
+++ b/lib/compiler/src/beam_ssa_pre_codegen.erl
@@ -72,7 +72,7 @@
 
 -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,zip/2]).
+                reverse/1,reverse/2,sort/1,splitwith/2,zip/2]).
 
 -spec module(beam_ssa:b_module(), [compile:option()]) ->
                     {'ok',beam_ssa:b_module()}.
@@ -124,6 +124,7 @@ passes(Opts) ->
               false -> ignore;
               true -> ?PASS(fix_tuples)
           end,
+          ?PASS(use_set_tuple_element),
           ?PASS(place_frames),
           ?PASS(fix_receives),
 
@@ -272,7 +273,7 @@ make_bs_getpos_map([], _, Count, Acc) ->
     {maps:from_list(Acc),Count}.
 
 get_savepoint({_,_}=Ps, SavePoints) ->
-    Name = {'@ssa_bs_position', maps:get(Ps, SavePoints)},
+    Name = {'@ssa_bs_position', map_get(Ps, SavePoints)},
     #b_var{name=Name}.
 
 make_bs_pos_dict([{Ctx,Pts}|T], Count0, Acc0) ->
@@ -323,7 +324,7 @@ make_restore_map([], _, Count, Acc) ->
 make_slot({Same,Same}, _Slots) ->
     #b_literal{val=start};
 make_slot({_,_}=Ps, Slots) ->
-    #b_literal{val=maps:get(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),
@@ -684,7 +685,7 @@ sanitize(#st{ssa=Blocks0,cnt=Count0}=St) ->
     St#st{ssa=Blocks,cnt=Count}.
 
 sanitize([L|Ls], Count0, Blocks0, Values0) ->
-    #b_blk{is=Is0} = Blk0 = maps:get(L, Blocks0),
+    #b_blk{is=Is0} = Blk0 = map_get(L, Blocks0),
     case sanitize_is(Is0, Count0, Values0, false, []) of
         no_change ->
             sanitize(Ls, Count0, Blocks0, Values0);
@@ -817,7 +818,7 @@ sanitize_badarg(I) ->
     I#b_set{op=call,args=[Func,#b_literal{val=badarg}]}.
 
 remove_unreachable([L|Ls], Blocks, Reachable, Acc) ->
-    #b_blk{is=Is0} = Blk0 = maps:get(L, Blocks),
+    #b_blk{is=Is0} = Blk0 = map_get(L, Blocks),
     case split_phis(Is0) of
         {[_|_]=Phis,Rest} ->
             Is = [prune_phi(Phi, Reachable) || Phi <- Phis] ++ Rest,
@@ -857,6 +858,202 @@ fix_tuples(#st{ssa=Blocks0,cnt=Count0}=St) ->
     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.
 %%%
 
@@ -874,7 +1071,7 @@ fix_tuples(#st{ssa=Blocks0,cnt=Count0}=St) ->
 %%   a stack frame or set up a stack frame with a different size.
 
 place_frames(#st{ssa=Blocks}=St) ->
-    Doms = beam_ssa:dominators(Blocks),
+    {Doms,_} = beam_ssa:dominators(Blocks),
     Ls = beam_ssa:rpo(Blocks),
     Tried = gb_sets:empty(),
     Frames0 = [],
@@ -882,7 +1079,7 @@ place_frames(#st{ssa=Blocks}=St) ->
     St#st{frames=Frames}.
 
 place_frames_1([L|Ls], Blocks, Doms, Tried0, Frames0) ->
-    Blk = maps:get(L, Blocks),
+    Blk = map_get(L, Blocks),
     case need_frame(Blk) of
         true ->
             %% This block needs a frame. Try to place it here.
@@ -993,15 +1190,15 @@ place_frame_here(L, Blocks, Doms, Frames) ->
 %%  Return all predecessors referenced in phi nodes.
 
 phi_predecessors(L, Blocks) ->
-    #b_blk{is=Is} = maps:get(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 = maps:get(L, Doms),
-    ordsets:is_element(DomBy, DominatedBy).
+    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.
@@ -1031,7 +1228,7 @@ 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} ->
+                  arity=Arity} when is_atom(Mod), is_atom(Name) ->
             case erl_bifs:is_exit_bif(Mod, Name, Arity) of
                 true ->
                     false;
@@ -1137,7 +1334,7 @@ recv_fix_common([Msg0|T], Exit, Rm, Blocks0, Count0) ->
     {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 = maps:get(Exit, Blocks1),
+    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),
@@ -1148,7 +1345,7 @@ recv_fix_common([], _, _, 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 = maps:get(Rm, Blocks1),
+    #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},
@@ -1183,11 +1380,11 @@ fix_receive([L|Ls], Defs, Blocks0, Count0) ->
     {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 = maps:get(L, Blocks1),
+    #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 = maps:put(L, Blk, Blocks1),
+    Blocks = Blocks1#{L:=Blk},
     fix_receive(Ls, Defs, Blocks, Count);
 fix_receive([], _Defs, Blocks, Count) ->
     {Blocks,Count}.
@@ -1212,7 +1409,7 @@ find_loop_exit_1(_, _, Exit) -> Exit.
 
 find_rm_blocks(L, Blocks) ->
     Seen = gb_sets:singleton(L),
-    Blk = maps:get(L, Blocks),
+    Blk = map_get(L, Blocks),
     Succ = beam_ssa:successors(Blk),
     find_rm_blocks_1(Succ, Seen, Blocks).
 
@@ -1222,7 +1419,7 @@ find_rm_blocks_1([L|Ls], Seen0, Blocks) ->
             find_rm_blocks_1(Ls, Seen0, Blocks);
         false ->
             Seen = gb_sets:insert(L, Seen0),
-            Blk = maps:get(L, Blocks),
+            Blk = map_get(L, Blocks),
             case find_rm_act(Blk#b_blk.is) of
                 prune ->
                     %% Looping back. Don't look at any successors.
@@ -1284,16 +1481,16 @@ find_yregs_1([{F,Defs}|Fs], Blocks0) ->
     Ls = beam_ssa:rpo([F], Blocks0),
     Yregs0 = [],
     Yregs = find_yregs_2(Ls, Blocks0, D0, Yregs0),
-    Blk0 = maps:get(F, Blocks0),
+    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 = maps:get(L, Blocks0),
+    Blk0 = map_get(L, Blocks0),
     #b_blk{is=Is,last=Last} = Blk0,
-    Ys0 = maps:get(L, D0),
+    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),
@@ -1320,7 +1517,7 @@ find_defs_1([L|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 = maps:get(L, Blocks),
+                    #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)
@@ -1339,10 +1536,10 @@ find_update_succ([S|Ss], #dk{d=Defs0,k=Killed0}=DK0, D0) ->
             Defs = ordsets:intersection(Defs0, Defs1),
             Killed = ordsets:union(Killed0, Killed1),
             DK = #dk{d=Defs,k=Killed},
-            D = maps:put(S, DK, D0),
+            D = D0#{S:=DK},
             find_update_succ(Ss, DK0, D);
         #{} ->
-            D = maps:put(S, DK0, D0),
+            D = D0#{S=>DK0},
             find_update_succ(Ss, DK0, D)
     end;
 find_update_succ([], _, D) -> D.
@@ -1432,7 +1629,7 @@ copy_retval(#st{frames=Frames,ssa=Blocks0,cnt=Count0}=St) ->
     St#st{ssa=Blocks,cnt=Count}.
 
 copy_retval_1([F|Fs], Blocks0, Count0) ->
-    #b_blk{anno=#{yregs:=Yregs0},is=Is} = maps:get(F, Blocks0),
+    #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),
@@ -1451,7 +1648,7 @@ collect_yregs([#b_set{}|Is], Yregs) ->
 collect_yregs([], Yregs) -> Yregs.
 
 copy_retval_2([L|Ls], Yregs, Copy0, Blocks0, Count0) ->
-    #b_blk{is=Is0,last=Last} = Blk = maps:get(L, Blocks0),
+    #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;
@@ -1593,7 +1790,7 @@ opt_get_list(#st{ssa=Blocks,res=Res}=St) ->
     St#st{ssa=opt_get_list_1(Ls, ResMap, Blocks)}.
 
 opt_get_list_1([L|Ls], Res, Blocks0) ->
-    #b_blk{is=Is0} = Blk = maps:get(L, 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);
@@ -1647,12 +1844,12 @@ number_instructions(#st{ssa=Blocks0}=St) ->
     St#st{ssa=number_is_1(Ls, 1, Blocks0)}.
 
 number_is_1([L|Ls], N0, Blocks0) ->
-    #b_blk{is=Is0,last=Last0} = Bl0 = maps:get(L, 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 = maps:put(L, Bl, Blocks0),
+    Blocks = Blocks0#{L:=Bl},
     number_is_1(Ls, N, Blocks);
 number_is_1([], _, Blocks) -> Blocks.
 
@@ -1693,7 +1890,7 @@ live_interval_blk(L, Blocks, {Vars0,LiveMap0}) ->
     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} = maps:get(L, Blocks),
+    #b_blk{is=Is,last=Last} = map_get(L, Blocks),
     End = beam_ssa:get_anno(n, Last),
     Use = [{V,{use,End+1}} || V <- Live1],
 
@@ -1762,7 +1959,7 @@ first_number([], Last) ->
 
 update_successors([L|Ls], Pred, Blocks, LiveMap, Live0) ->
     Live1 = ordsets:union(Live0, get_live(L, LiveMap)),
-    #b_blk{is=Is} = maps:get(L, Blocks),
+    #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.
@@ -1800,7 +1997,7 @@ 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 = maps:get(L, Blocks0),
+    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),
@@ -1826,7 +2023,7 @@ reserve_try_tags_1([L|Ls], Blocks, Seen0, ActMap0) ->
             reserve_try_tags_1(Ls, Blocks, Seen0, ActMap0);
         false ->
             Seen1 = gb_sets:insert(L, Seen0),
-            #b_blk{is=Is} = Blk = maps:get(L, Blocks),
+            #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),
@@ -1869,11 +2066,11 @@ 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 = maps:get(L, Blocks1),
+    #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 = maps:put(L, Blk, Blocks1),
+    Blocks = Blocks1#{L:=Blk},
     {NewVars,Blocks,Count}.
 
 insert_after_phis([#b_set{op=phi}=I|Is], InsertIs) ->
@@ -1895,7 +2092,7 @@ frame_size(#st{frames=Frames,regs=Regs,ssa=Blocks0}=St) ->
 
 frame_size_1(L, Regs, Blocks0) ->
     Def = beam_ssa:def([L], Blocks0),
-    Yregs0 = [maps:get(V, Regs) || V <- Def, is_yreg(maps:get(V, Regs))],
+    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
@@ -1907,17 +2104,17 @@ frame_size_1(L, Regs, Blocks0) ->
         true ->
             ok
     end,
-    Blk0 = maps:get(L, Blocks0),
+    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 = maps:put(L, Blk, Blocks0),
+    Blocks = Blocks0#{L:=Blk},
     Reachable = beam_ssa:rpo([L], Blocks),
     frame_deallocate(Reachable, FrameSize, Blocks).
 
 frame_deallocate([L|Ls], Size, Blocks0) ->
-    Blk0 = maps:get(L, Blocks0),
+    Blk0 = map_get(L, Blocks0),
     Blk = case Blk0 of
               #b_blk{last=#b_ret{}=Ret0} ->
                   Ret = beam_ssa:add_anno(deallocate, Size, Ret0),
@@ -1925,7 +2122,7 @@ frame_deallocate([L|Ls], Size, Blocks0) ->
               #b_blk{} ->
                   Blk0
           end,
-    Blocks = maps:put(L, Blk, Blocks0),
+    Blocks = Blocks0#{L:=Blk},
     frame_deallocate(Ls, Size, Blocks);
 frame_deallocate([], _, Blocks) -> Blocks.
 
@@ -1938,7 +2135,7 @@ frame_deallocate([], _, Blocks) -> Blocks.
 
 turn_yregs(#st{frames=Frames,regs=Regs0,ssa=Blocks}=St) ->
     Regs1 = foldl(fun(L, A) ->
-                          Blk = maps:get(L, Blocks),
+                          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]
@@ -1947,7 +2144,7 @@ turn_yregs(#st{frames=Frames,regs=Regs0,ssa=Blocks}=St) ->
     St#st{regs=Regs}.
 
 turn_yregs_1(Def, FrameSize, Regs) ->
-    Yregs0 = [{maps:get(V, Regs),V} || V <- Def, is_yreg(maps:get(V, 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],
@@ -1993,19 +2190,36 @@ reserve_zregs(Blocks, Intervals, Res) ->
         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 of
-        #b_literal{val=Arity} when Arity bsr 32 =:= 0 ->
+              #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;
@@ -2070,23 +2284,95 @@ reserve_freg([], Res) -> Res.
 %%  will allocate the lowest free X register for the variable.
 
 reserve_xregs(Blocks, Res) ->
-    F = fun(L, #b_blk{is=Is,last=Last}, R) ->
-                {Xs0,Used0} = reserve_terminator(L, Last, Blocks, R),
-                reserve_xregs_is(reverse(Is), R, Xs0, Used0)
-        end,
-    beam_ssa:fold_po(F, Res, Blocks).
-
+    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) ->
-    Xs1 = case is_gc_safe(I) of
-              true ->
-                  Xs0;
-              false ->
-                  %% There may be a garbage collection after executing this
-                  %% instruction. We will need prune the list of preferred
-                  %% X registers.
-                  res_xregs_prune(Xs0, Used0, Res0)
-          end,
-    Res = reserve_xreg(Dst, Xs1, Res0),
+    Res = reserve_xreg(Dst, Xs0, Res0),
     Used1 = ordsets:union(Used0, beam_ssa:used(I)),
     Used = ordsets:del_element(Dst, Used1),
     case Op of
@@ -2097,28 +2383,74 @@ reserve_xregs_is([#b_set{op=Op,dst=Dst,args=Args}=I|Is], Res0, Xs0, Used0) ->
             Xs = reserve_call_args(tl(Args)),
             reserve_xregs_is(Is, Res, Xs, Used);
         _ ->
-            reserve_xregs_is(Is, Res, Xs1, Used)
+            reserve_xregs_is(Is, Res, Xs0, Used)
     end;
-reserve_xregs_is([], Res, _Xs, _Used) -> Res.
-
-reserve_terminator(L, #b_br{bool=#b_literal{val=true},succ=Succ}, Blocks, Res) ->
-    case maps:get(Succ, Blocks) of
+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, Last, Blocks, Res);
-        #b_blk{is=[_|_]=Is} ->
-            {res_xregs_from_phi(Is, L, Res, #{}),[]}
+            reserve_terminator(Succ, Is, Last, Blocks, XsMap, Res);
+        #b_blk{is=[_|_]=PhiIs} ->
+            res_xregs_from_phi(PhiIs, L, Res, #{})
     end;
-reserve_terminator(_, Last, _, _) ->
-    {#{},beam_ssa:used(Last)}.
+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)
@@ -2138,12 +2470,12 @@ reserve_call_args([], _, Xs) -> Xs.
 reserve_xreg(V, Xs, Res) ->
     case Res of
         #{V:=_} ->
-            %% Already reserved.
+            %% Already reserved (but not as an X register).
             Res;
         #{} ->
             case Xs of
                 #{V:=X} ->
-                    %% Add a hint that a specific X register is
+                    %% Add a hint that this specific X register is
                     %% preferred, unless it is already in use.
                     Res#{V=>{prefer,X}};
                 #{} ->
@@ -2152,23 +2484,15 @@ reserve_xreg(V, Xs, Res) ->
             end
     end.
 
-is_gc_safe(#b_set{op=phi}) ->
-    false;
-is_gc_safe(#b_set{op=Op,args=Args}) ->
-    case beam_ssa_codegen:classify_heap_need(Op, Args) of
-        neutral -> true;
-        {put,_} -> true;
-        _ -> false
-    end.
-
 %% res_xregs_prune(PreferredRegs, Used, Res) -> PreferredRegs.
-%%  Prune the list of preferred to only include X registers that
-%%  are guaranteed to survice a garbage collection.
+%%  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) ->
+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 highter than this number, but this is a conservative safe
+    %% be higher than this number, but this is a conservative safe
     %% estimate.
     NumSafe = foldl(fun(V, N) ->
                             case Res of
@@ -2180,7 +2504,8 @@ res_xregs_prune(Xs, Used, Res) ->
 
     %% Remove unsafe registers from the list of potential
     %% preferred registers.
-    maps:filter(fun(_, {x,X}) -> X < NumSafe end, Xs).
+    maps:filter(fun(_, {x,X}) -> X < NumSafe end, Xs);
+res_xregs_prune(Xs, _Used, _Res) -> Xs.
 
 %%%
 %%% Register allocation using linear scan.
@@ -2229,7 +2554,7 @@ linear_scan(#st{intervals=Intervals0,res=Res}=St0) ->
     St#st{regs=maps:from_list(Regs)}.
 
 init_interval({V,[{Start,_}|_]=Rs}, Res) ->
-    Info = maps:get(V, Res),
+    Info = map_get(V, Res),
     Pool = case Info of
                {prefer,{x,_}} -> x;
                x -> x;
@@ -2430,16 +2755,16 @@ free_reg(#i{reg={_,_}=Reg}=I, L) ->
     update_pool(I, FreeRegs, L).
 
 get_pool(#i{pool=Pool}, #l{free=Free}) ->
-    maps:get(Pool, Free).
+    map_get(Pool, Free).
 
 update_pool(#i{pool=Pool}, New, #l{free=Free0}=L) ->
-    Free = maps:put(Pool, New, Free0),
+    Free = Free0#{Pool:=New},
     L#l{free=Free}.
 
 get_next_free(#i{pool=Pool}, #l{free=Free0}=L0) ->
     K = {next,Pool},
-    N = maps:get(K, Free0),
-    Free = maps:put(K, N+1, Free0),
+    N = map_get(K, Free0),
+    Free = Free0#{K:=N+1},
     L = L0#l{free=Free},
     if
         is_integer(Pool) -> {{y,N},L};
@@ -2475,7 +2800,7 @@ are_overlapping_1({_,_}, []) -> false.
 is_loop_header(L, Blocks) ->
     %% We KNOW that a loop header must start with a peek_message
     %% instruction.
-    case maps:get(L, Blocks) of
+    case map_get(L, Blocks) of
         #b_blk{is=[#b_set{op=peek_message}|_]} -> true;
         _ -> false
     end.
@@ -2486,7 +2811,7 @@ rel2fam(S0) ->
     sofs:to_external(S).
 
 split_phis(Is) ->
-    partition(fun(#b_set{op=Op}) -> Op =:= phi end, Is).
+    splitwith(fun(#b_set{op=Op}) -> Op =:= phi end, Is).
 
 is_yreg({y,_}) -> true;
 is_yreg({x,_}) -> false;
diff --git a/lib/compiler/src/beam_ssa_recv.erl b/lib/compiler/src/beam_ssa_recv.erl
index 6e49b128da..1e0e1ecac2 100644
--- a/lib/compiler/src/beam_ssa_recv.erl
+++ b/lib/compiler/src/beam_ssa_recv.erl
@@ -101,7 +101,7 @@ opt([{L,#b_blk{is=[#b_set{op=peek_message}|_]}=Blk0}|Bs], Blocks0, Preds) ->
     case recv_opt(Preds, L, Blocks0) of
         {yes,Blocks1} ->
             Blk = beam_ssa:add_anno(recv_set, L, Blk0),
-            Blocks = maps:put(L, Blk, Blocks1),
+            Blocks = Blocks1#{L:=Blk},
             opt(Bs, Blocks, []);
         no ->
             opt(Bs, Blocks0, [])
@@ -111,11 +111,11 @@ opt([{L,_}|Bs], Blocks, Preds) ->
 opt([], Blocks, _) -> Blocks.
 
 recv_opt([L|Ls], RecvLbl, Blocks) ->
-    #b_blk{is=Is0} = Blk0 = maps:get(L, 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,maps:put(L, Blk, Blocks)};
+            {yes,Blocks#{L:=Blk}};
         no ->
             recv_opt(Ls, RecvLbl, Blocks)
     end;
@@ -174,7 +174,7 @@ opt_ref_used(RecvLbl, Ref, Blocks) ->
     end.
 
 opt_ref_used_1(L, Vs0, Blocks) ->
-    #b_blk{is=Is} = Blk = maps:get(L, 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);
diff --git a/lib/compiler/src/beam_ssa_type.erl b/lib/compiler/src/beam_ssa_type.erl
index 95fc3bb0e9..5fbb679c6f 100644
--- a/lib/compiler/src/beam_ssa_type.erl
+++ b/lib/compiler/src/beam_ssa_type.erl
@@ -19,19 +19,23 @@
 %%
 
 -module(beam_ssa_type).
--export([opt/2]).
+-export([opt_start/4, opt_continue/4, opt_finish/3]).
 
--include("beam_ssa.hrl").
+-include("beam_ssa_opt.hrl").
 -import(lists, [all/2,any/2,droplast/1,foldl/3,last/1,member/2,
-                reverse/1,sort/1]).
+                keyfind/3,partition/2,reverse/1,reverse/2,
+                seq/2,sort/1]).
 
 -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()),
-            sub :: #{beam_ssa:b_var():=beam_ssa:value()}
-           }).
+-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).
 
@@ -41,87 +45,204 @@
 -record(t_bs_match, {type :: type()}).
 -record(t_tuple, {size=0 :: integer(),
                   exact=false :: boolean(),
-                  elements=[] :: [any()]
-                 }).
+                  %% 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'.
+                {'binary',pos_integer()} | 'cons' | 'float' | 'list' | 'map' | 'nil' | 'number'.
 -type type_db() :: #{beam_ssa:var_name():=type()}.
 
--spec opt([{Label0,Block0}], Args) -> [{Label,Block}] when
-      Label0 :: beam_ssa:label(),
-      Block0 :: beam_ssa:b_blk(),
+-spec opt_start(Linear, Args, Anno, FuncDb) -> {Linear, FuncDb} when
+      Linear :: [{non_neg_integer(), beam_ssa:b_blk()}],
       Args :: [beam_ssa:b_var()],
-      Label :: beam_ssa:label(),
-      Block :: beam_ssa:b_blk().
-
-opt(Linear, Args) ->
-    UsedOnce = used_once(Linear, Args),
+      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{ds=Defs,ls=#{0=>Ts,?BADARG_BLOCK=>#{}},
-           once=UsedOnce,sub=#{}},
-    opt_1(Linear, D).
 
-opt_1([{L,Blk}|Bs], #d{ls=Ls}=D) ->
+    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) ->
+                                 Acc#{ Index => 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_2(L, Blk, Bs, Ts, D);
+            opt_1(L, Blk, Bs, Ts, D, Acc);
         #{} ->
             %% This block is never reached. Discard it.
-            opt_1(Bs, D)
+            opt(Bs, D, Acc)
     end;
-opt_1([], #d{}) -> [].
-
-opt_2(L, #b_blk{is=Is0}=Blk0, Bs, Ts, #d{sub=Sub}=D0) ->
-    case Is0 of
-        [#b_set{op=call,dst=Dst,
-                args=[#b_remote{mod=#b_literal{val=Mod},
-                                name=#b_literal{val=Name}}=Rem|Args0]}=I0] ->
-            case erl_bifs:is_exit_bif(Mod, Name, length(Args0)) of
-                true ->
-                    %% This call will never reach the successor block.
-                    %% Rewrite the terminator to a 'ret', and remove
-                    %% all type information for this label. That will
-                    %% simplify the phi node in the former successor.
-                    Args = simplify_args(Args0, Sub, Ts),
-                    I = I0#b_set{args=[Rem|Args]},
-                    Ret = #b_ret{arg=Dst},
-                    Blk = Blk0#b_blk{is=[I],last=Ret},
-                    Ls = maps:remove(L, D0#d.ls),
-                    D = D0#d{ls=Ls},
-                    [{L,Blk}|opt_1(Bs, D)];
-                false ->
-                    opt_3(L, Blk0, Bs, Ts, D0)
-            end;
-        _ ->
-            opt_3(L, Blk0, Bs, Ts, D0)
+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.
 
-opt_3(L, #b_blk{is=Is0,last=Last0}=Blk0, Bs, Ts0,
-      #d{ds=Ds0,ls=Ls0,sub=Sub0}=D0) ->
-    {Is,Ts,Ds,Sub} = opt_is(Is0, Ts0, Ds0, Ls0, Sub0, []),
-    D1 = D0#d{ds=Ds,sub=Sub},
-    Last1 = simplify_terminator(Last0, Sub, Ts),
-    Last = opt_terminator(Last1, Ts, Ds),
-    D = update_successors(Last, Ts, D1),
-    Blk = Blk0#b_blk{is=Is,last=Last},
-    [{L,Blk}|opt_1(Bs, D)].
-
-simplify_terminator(#b_br{bool=Bool}=Br, Sub, Ts) ->
+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) ->
+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) ->
-    Ret#b_ret{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, Ls, Sub0, Acc) ->
+       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} ||
@@ -132,15 +253,68 @@ opt_is([#b_set{op=phi,dst=Dst,args=Args0}=I0|Is],
             %% value or if the values are identical.
             [{Val,_}|_] = Args,
             Sub = Sub0#{Dst=>Val},
-            opt_is(Is, Ts0, Ds0, Ls, Sub, Acc);
+            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, Ls, Sub0, [I|Acc])
+            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
+        {_,[#b_set{op=succeeded}]} ->
+            %% This call instruction is inside a try/catch
+            %% block. Don't attempt to optimize it.
+            opt_is(Is, Ts1, 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, Ls, Sub0, Acc) ->
+       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
@@ -148,16 +322,112 @@ opt_is([#b_set{args=Args0,dst=Dst}=I0|Is],
             I = beam_ssa:normalize(I2),
             Ts = update_types(I, Ts0, Ds0),
             Ds = Ds0#{Dst=>I},
-            opt_is(Is, Ts, Ds, Ls, Sub0, [I|Acc]);
+            opt_is(Is, Ts, Ds, Fdb, D, Sub0, [I|Acc]);
         #b_literal{}=Lit ->
             Sub = Sub0#{Dst=>Lit},
-            opt_is(Is, Ts0, Ds0, Ls, Sub, Acc);
+            opt_is(Is, Ts0, Ds0, Fdb, D, Sub, Acc);
         #b_var{}=Var ->
-            Sub = Sub0#{Dst=>Var},
-            opt_is(Is, Ts0, Ds0, Ls, Sub, Acc)
+            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(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_is([], Ts, Ds, _Ls, Sub, Acc) ->
-    {reverse(Acc),Ts,Ds,Sub}.
+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
@@ -181,12 +451,14 @@ simplify(#b_set{op={bif,'or'},args=Args}=I, Ts) ->
         false ->
             I
     end;
-simplify(#b_set{op={bif,element},args=[#b_literal{val=Index},Tuple]}=I, Ts) ->
+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#b_set{op=get_tuple_element,args=[Tuple,#b_literal{val=Index-1}]};
+            I = I0#b_set{op=get_tuple_element,
+                         args=[Tuple,#b_literal{val=Index-1}]},
+            simplify(I, Ts);
         _ ->
-            eval_bif(I, Ts)
+            eval_bif(I0, Ts)
     end;
 simplify(#b_set{op={bif,hd},args=[List]}=I, Ts) ->
     case get_type(List, Ts) of
@@ -234,10 +506,19 @@ simplify(#b_set{op={bif,'=='},args=Args}=I, Ts) ->
     end;
 simplify(#b_set{op={bif,'=:='},args=[Same,Same]}, _Ts) ->
     #b_literal{val=true};
-simplify(#b_set{op={bif,'=:='},args=Args}=I, Ts) ->
-    case meet(get_types(Args, Ts)) of
-        none -> #b_literal{val=false};
-        _ -> eval_bif(I, Ts)
+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),
@@ -248,11 +529,17 @@ simplify(#b_set{op={bif,Op},args=Args}=I, Ts) ->
             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=0}]}=I, Ts) ->
+simplify(#b_set{op=get_tuple_element,args=[Tuple,#b_literal{val=N}]}=I, Ts) ->
     case get_type(Tuple, Ts) of
-        #t_tuple{elements=[First]} ->
-            #b_literal{val=First};
-        #t_tuple{} ->
+        #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) ->
@@ -263,24 +550,8 @@ simplify(#b_set{op=is_nonempty_list,args=[Src]}=I, Ts) ->
         _ ->    #b_literal{val=false}
     end;
 simplify(#b_set{op=is_tagged_tuple,
-                args=[Src,#b_literal{val=Size},#b_literal{val=Tag}]}=I, Ts) ->
-    case get_type(Src, Ts) of
-        #t_tuple{exact=true,size=Size,elements=[Tag]} ->
-            #b_literal{val=true};
-        #t_tuple{exact=true,size=ActualSize,elements=[]} ->
-            if
-                Size =/= ActualSize ->
-                    #b_literal{val=false};
-                true ->
-                    I
-            end;
-        #t_tuple{exact=false} ->
-            I;
-        any ->
-            I;
-        _ ->
-            #b_literal{val=false}
-    end;
+                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]};
@@ -289,7 +560,7 @@ simplify(#b_set{op=put_tuple,args=Args}=I, _Ts) ->
         none -> I;
         List -> #b_literal{val=list_to_tuple(List)}
     end;
-simplify(#b_set{op=succeeded,args=[#b_literal{}]}, _Ts) ->
+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=[]};
@@ -390,41 +661,49 @@ 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{}=V}=Br, Ts, Ds) ->
-    #{V:=Set} = Ds,
-    case Set of
-        #b_set{op={bif,'=:='},args=[Bool,#b_literal{val=true}]} ->
-            case t_is_boolean(get_type(Bool, Ts)) of
-                true ->
-                    %% Bool =:= true   ==>  Bool
-                    simplify_not(Br#b_br{bool=Bool}, Ts, Ds);
-                false ->
-                    Br
-            end;
-        #b_set{} ->
-            simplify_not(Br, Ts, Ds)
-    end;
+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}=Sw0, Ts, Ds) ->
-    Type = get_type(V, Ts),
+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(Sw0, Range);
-        _ ->
+            simplify_switch_int(Sw1, Range);
+        #t_atom{elements=[_|_]} ->
             case t_is_boolean(Type) of
                 true ->
-                    case simplify_switch_bool(Sw0, Ts, Ds) of
-                        #b_br{}=Br ->
-                            opt_terminator(Br, Ts, Ds);
-                        Sw ->
-                            beam_ssa:normalize(Sw)
-                    end;
+                    #b_br{} = Br = simplify_switch_bool(Sw1, Ts, Ds),
+                    opt_terminator(Br, Ts, Ds);
                 false ->
-                    beam_ssa:normalize(Sw0)
-            end
+                    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;
-opt_terminator(#b_ret{}=Ret, _Ts, _Ds) -> Ret.
+prune_switch_list([], _, _, _) -> [].
 
 update_successors(#b_br{bool=#b_literal{val=true},succ=S}, Ts, D) ->
     update_successor(S, Ts, D);
@@ -433,39 +712,62 @@ update_successors(#b_br{bool=#b_var{}=Bool,succ=Succ,fail=Fail}, Ts0, D0) ->
         true ->
             %% This variable is defined in this block and is only
             %% referenced by this br terminator. Therefore, there is
-            %% no need to include the type database passed on to the
-            %% successors of this block.
+            %% no need to include it in the type database passed on to
+            %% the successors of this block.
             Ts = maps:remove(Bool, Ts0),
-            D = update_successor(Fail, Ts, D0),
-            SuccTs = infer_types(Bool, Ts, D0),
+            {SuccTs,FailTs} = infer_types_br(Bool, Ts, D0),
+            D = update_successor(Fail, FailTs, D0),
             update_successor(Succ, SuccTs, D);
         false ->
-            D = update_successor_bool(Bool, false, Fail, Ts0, D0),
-            SuccTs = infer_types(Bool, Ts0, D0),
+            {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}, Ts0, D0) ->
+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 the type database passed on to the
-            %% successors of this block.
-            Ts = maps:remove(V, Ts0),
+            %% 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) ->
-                        update_successor(S, Ts, A)
+            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 ->
-            D = update_successor(Fail, Ts0, D0),
+            %% 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) ->
-                        T = get_type(Val, Ts0),
-                        update_successor(S, Ts0#{V=>T}, A)
+                        SuccTs = infer_types_switch(V, Val, Ts, D),
+                        update_successor(S, SuccTs, A)
                 end,
             foldl(F, D, List)
-        end;
-update_successors(#b_ret{}, _Ts, D) -> D.
+    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
@@ -526,22 +828,51 @@ type(bs_get_tail, _Args, _Ts, _Ds) ->
 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,_]} ->
+        {erlang,setelement,[Pos,Tuple,Arg]} ->
             case {get_type(Pos, Ts),get_type(Tuple, Ts)} of
-                {#t_integer{elements={MinIndex,_}},#t_tuple{}=T}
-                  when MinIndex > 1 ->
-                    %% First element is not updated. The result
-                    %% will have the same type.
-                    T;
+                {#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 is 1 or unknown. May update the first
-                    %% element of the tuple.
-                    T#t_tuple{elements=[]};
-                {#t_integer{elements={MinIndex,_}},_} ->
-                    #t_tuple{size=MinIndex};
+                    %% 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;
         {math,_,_} ->
             case is_math_bif(Name, length(Args)) of
                 false -> any;
@@ -553,6 +884,11 @@ type(call, [#b_remote{mod=#b_literal{val=Mod},
                 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) ->
@@ -561,13 +897,13 @@ type(put_map, _Args, _Ts, _Ds) ->
     map;
 type(put_list, _Args, _Ts, _Ds) ->
     cons;
-type(put_tuple, Args, _Ts, _Ds) ->
-    case Args of
-        [#b_literal{val=First}|_] ->
-            #t_tuple{exact=true,size=length(Args),elements=[First]};
-        _ ->
-            #t_tuple{exact=true,size=length(Args)}
-    end;
+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} ->
@@ -607,6 +943,8 @@ type(succeeded, [#b_var{}=Src], Ts, Ds) ->
         #b_set{} ->
             t_boolean()
     end;
+type(succeeded, [#b_literal{}], _Ts, _Ds) ->
+    t_atom(true);
 type(_, _, _, _) -> any.
 
 arith_op_type(Args, Ts) ->
@@ -762,6 +1100,17 @@ bs_match_type(utf16, _) ->
 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],
@@ -778,14 +1127,42 @@ eq_ranges([H], H, H) -> true;
 eq_ranges([H|T], H, Max) -> eq_ranges(T, H+1, Max);
 eq_ranges(_, _, _) -> false.
 
-simplify_switch_bool(#b_switch{arg=B,list=List0}=Sw, Ts, Ds) ->
-    List = sort(List0),
-    case List of
-        [{#b_literal{val=false},Fail},{#b_literal{val=true},Succ}] ->
-            simplify_not(#b_br{bool=B,succ=Succ,fail=Fail}, Ts, Ds);
-        [_|_] ->
-            Sw
-    end.
+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
@@ -799,13 +1176,15 @@ simplify_not(#b_br{bool=#b_var{}=V,succ=Succ,fail=Fail}=Br0, Ts, Ds) ->
             end;
         #{} ->
             Br0
-    end.
+    end;
+simplify_not(#b_br{bool=#b_literal{}}=Br, _Ts, _Ds) -> Br.
 
 %%%
 %%% Calculate the set of variables that are only used once in the
-%%% block that they are defined in. That will allow us to discard type
-%%% information for variables that will never be referenced by the
-%%% successor blocks, potentially improving compilation times.
+%%% 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) ->
@@ -814,34 +1193,48 @@ used_once(Linear, Args) ->
     cerl_sets:from_list(maps:keys(Map)).
 
 used_once_1([{L,#b_blk{is=Is,last=Last}}|Bs], Uses0) ->
-    Uses = used_once_2([Last|reverse(Is)], L, 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([I|Is], L, Uses0) ->
+used_once_2([#b_set{dst=Dst}=I|Is], L, Uses0) ->
     Uses = used_once_uses(beam_ssa:used(I), L, Uses0),
-    case I of
-        #b_set{dst=Dst} ->
-            case Uses of
-                #{Dst:=[L]} ->
-                    used_once_2(Is, L, Uses);
-                #{} ->
-                    used_once_2(Is, L, maps:remove(Dst, Uses))
-            end;
-        _ ->
-            used_once_2(Is, L, Uses)
+    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:=Us} ->
-            used_once_uses(Vs, L, Uses#{V:=[L|Us]});
+        #{V:=more_than_once} ->
+            used_once_uses(Vs, L, Uses);
         #{} ->
-            used_once_uses(Vs, L, Uses#{V=>[L]})
+            %% 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].
@@ -865,19 +1258,107 @@ get_type(#b_literal{val=Val}, _Ts) ->
         Val =:= {} ->
             #t_tuple{exact=true};
         is_tuple(Val) ->
-            #t_tuple{exact=true,size=tuple_size(Val),
-                     elements=[element(1, 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(#b_var{}=V, Ts, #d{ds=Ds}) ->
+%% 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,
-    Types = infer_type(Op, 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 ->
@@ -885,27 +1366,35 @@ infer_type({bif,element}, [#b_literal{val=Pos},#b_var{}=Tuple], _Ds) ->
         true ->
             []
     end;
-infer_type({bif,'=:='}, [#b_var{}=Src,#b_literal{}=Lit], Ds) ->
-    Def = maps:get(Src, Ds),
-    Type = get_type(Lit, #{}),
-    [{Src,Type}|infer_tuple_size(Def, Lit) ++
-         infer_first_element(Def, Lit)];
+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{val=Tag}], _Ds) ->
-    [{Src,#t_tuple{exact=true,size=Size,elements=[Tag]}}];
+                             #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);
@@ -969,6 +1458,7 @@ 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;
@@ -976,23 +1466,27 @@ 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.
 
-infer_tuple_size(#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_tuple_size(_, _) -> [].
-
-infer_first_element(#b_set{op=get_tuple_element,
-                           args=[#b_var{}=Tuple,#b_literal{val=0}]},
-                    #b_literal{val=First}) ->
-    [{Tuple,#t_tuple{size=1,elements=[First]}}];
-infer_first_element(_, _) -> [].
-
 is_math_bif(cos, 1) -> true;
 is_math_bif(cosh, 1) -> true;
 is_math_bif(sin, 1) -> true;
@@ -1088,6 +1582,22 @@ t_tuple_size(#t_tuple{size=Size,exact=true}) ->
 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:
@@ -1135,15 +1645,41 @@ join(#t_integer{}, number) -> number;
 join(number, #t_integer{}) -> number;
 join(float, number) -> number;
 join(number, float) -> number;
-join(#t_tuple{size=Sz,exact=Exact1}, #t_tuple{size=Sz,exact=Exact2}) ->
-    Exact = Exact1 and Exact2,
-    #t_tuple{size=Sz,exact=Exact};
-join(#t_tuple{size=Sz1}, #t_tuple{size=Sz2}) ->
-    #t_tuple{size=min(Sz1, Sz2)};
+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;
@@ -1152,14 +1688,40 @@ gcd(A, B) ->
 
 meet_types([{V,T0}|Vs], Ts) ->
     #{V:=T1} = Ts,
-    T = meet(T0, T1),
-    meet_types(Vs, Ts#{V:=T});
+    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:
@@ -1214,9 +1776,6 @@ meet(_, _) ->
     %% Inconsistent types. There will be an exception at runtime.
     none.
 
-meet_tuples(#t_tuple{elements=[E1]}, #t_tuple{elements=[E2]})
-  when E1 =/= E2 ->
-    none;
 meet_tuples(#t_tuple{size=Sz1,exact=true},
             #t_tuple{size=Sz2,exact=true}) when Sz1 =/= Sz2 ->
     none;
@@ -1224,12 +1783,31 @@ 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,
-    Es = case {Es1,Es2} of
-             {[],[_|_]} -> Es2;
-             {[_|_],[]} -> Es1;
-             {_,_} -> Es1
-         end,
-    #t_tuple{size=Size,exact=Exact,elements=Es}.
+    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.
@@ -1268,5 +1846,13 @@ verified_type(map=T) -> T;
 verified_type(nil=T) -> T;
 verified_type(cons=T) -> T;
 verified_type(number=T) -> T;
-verified_type(#t_tuple{}=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 51ff580a7a..acf3838da4 100644
--- a/lib/compiler/src/beam_trim.erl
+++ b/lib/compiler/src/beam_trim.erl
@@ -200,6 +200,8 @@ create_map(Trim, Moves) ->
        (Any) -> Any
     end.
 
+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]);
@@ -279,6 +281,8 @@ safe_labels([_|Is], Acc) ->
     safe_labels(Is, 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,_}}|_]) ->
@@ -337,6 +341,8 @@ frame_layout_2(Is) -> reverse(Is).
 %%  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) ->
@@ -393,6 +399,8 @@ frame_size_branch(L, Is, Safe) ->
 %%  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]) ->
diff --git a/lib/compiler/src/beam_validator.erl b/lib/compiler/src/beam_validator.erl
index 7d908df3bf..aa7b190670 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,map/2,foreach/2,reverse/1]).
+-import(lists, [any/2,dropwhile/2,foldl/3,map/2,reverse/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,_}) -> term;
+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) -> {atom, Value};
+type_anno(float, Value) -> {float, Value};
+type_anno(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}}) ->
@@ -93,28 +122,6 @@ validate(Module, Fs) ->
     Ft = index_parameter_types(Fs, []),
     validate_0(Module, Fs, Ft).
 
-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(lists:sort(Acc)).
-
-index_parameter_types_1([{'%', {type_info, Reg, Type}} | Is], Entry, Acc) ->
-    Key = {Entry, Reg},
-    index_parameter_types_1(Is, Entry, [{Key, Type} | Acc]);
-index_parameter_types_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
@@ -167,6 +174,32 @@ validate_0(Module, [{function,Name,Ar,Entry,Code}|Fs], Ft) ->
 	 slots=0 :: non_neg_integer()		%Number of slots
 	}).
 
+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(lists: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).
 
@@ -271,11 +304,11 @@ valfun_1(_I, #vst{current=none}=Vst) ->
     %% the original R10B compiler thought would return.
     Vst;
 valfun_1({badmatch,Src}, Vst) ->
-    assert_term(Src, Vst),
+    assert_not_fragile(Src, Vst),
     verify_y_init(Vst),
     kill_state(Vst);
 valfun_1({case_end,Src}, Vst) ->
-    assert_term(Src, Vst),
+    assert_not_fragile(Src, Vst),
     verify_y_init(Vst),
     kill_state(Vst);
 valfun_1(if_end, Vst) ->
@@ -283,40 +316,21 @@ valfun_1(if_end, Vst) ->
     kill_state(Vst);
 valfun_1({try_case_end,Src}, Vst) ->
     verify_y_init(Vst),
-    assert_term(Src, Vst),
+    assert_not_fragile(Src, Vst),
     kill_state(Vst);
 %% 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),
-    #vst{current=#st{x=Xs,y=Ys}} = Vst,
-    {Reg, Tree} = case Ctx of
-                      {x,X} -> {X, Xs};
-                      {y,Y} -> {Y, Ys};
-                      _ -> error({bad_source,Ctx})
-                  end,
-    Type = case gb_trees:lookup(Reg, Tree) of
-               {value,#ms{}} -> propagate_fragility(term, [Ctx], Vst);
-               _ -> error({bad_context,Reg})
-           end,
-    set_type_reg(Type, Dst, Vst);
+    extract_term(binary, [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}, Vst0) ->
-    Type = get_move_term_type(Src, Vst0),
-    Vst = set_type_reg(Type, Dst, Vst0),
-    set_alias(Src, Dst, Vst);
+valfun_1({move,Src,Dst}, Vst) ->
+    assign(Src, Dst, Vst);
 valfun_1({fmove,Src,{fr,_}=Dst}, Vst) ->
     assert_type(float, Src, Vst),
     set_freg(Dst, Vst);
@@ -324,7 +338,7 @@ 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);
+    create_term({float,[]}, Dst, Vst);
 valfun_1({kill,{y,_}=Reg}, Vst) ->
     set_type_y(initialized, Reg, Vst);
 valfun_1({init,{y,_}=Reg}, Vst) ->
@@ -346,34 +360,41 @@ valfun_1({bif,Op,{f,_},Src,Dst}=I, Vst) ->
     end;
 %% Put instructions.
 valfun_1({put_list,A,B,Dst}, Vst0) ->
-    assert_term(A, Vst0),
-    assert_term(B, Vst0),
+    assert_not_fragile(A, Vst0),
+    assert_not_fragile(B, Vst0),
     Vst = eat_heap(2, Vst0),
-    set_type_reg(cons, Dst, Vst);
+    create_term(cons, Dst, Vst);
 valfun_1({put_tuple2,Dst,{list,Elements}}, Vst0) ->
-    _ = [assert_term(El, Vst0) || El <- Elements],
+    _ = [assert_not_fragile(El, Vst0) || El <- Elements],
     Size = length(Elements),
     Vst = eat_heap(Size+1, Vst0),
-    Type = {tuple,Size},
-    set_type_reg(Type, Dst, Vst);
+    {Es,_} = foldl(fun(Val, {Es0, Index}) ->
+                       Type = get_term_type(Val, Vst0),
+                       Es = set_element_type(Index, Type, Es0),
+                       {Es, Index + 1}
+                   end, {#{}, 1}, Elements),
+    Type = {tuple,Size,Es},
+    create_term(Type, 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, 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),
+    assert_not_fragile(Src, Vst0),
     Vst = eat_heap(1, Vst0),
     #vst{current=St0} = Vst,
     case St0 of
         #st{puts_left=none} ->
             error(not_building_a_tuple);
-        #st{puts_left={1,{Dst,Type}}} ->
+        #st{puts_left={1,{Dst,Sz,Es}}} ->
             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}, Dst, Vst#vst{current=St});
+        #st{puts_left={PutsLeft,{Dst,Sz,Es0}}} when is_integer(PutsLeft) ->
+            Index = Sz - PutsLeft + 1,
+            Es = Es0#{ 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.
@@ -386,25 +407,13 @@ 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, Info0}}, Vst0) ->
+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.
-    %%
-    %% At the moment we only allow this when narrowing from 'term' which is
-    %% what to expect with function parameters, but in theory any narrowing
-    %% conversion should be legal.
-    case get_move_term_type(Reg, Vst0) of
-        term ->
-            Type0 = case Info0 of
-                        match_context -> #ms{};
-                        _ -> Info0
-                    end,
-            Type = propagate_fragility(Type0, [Reg], Vst0),
-            set_type_reg(Type, Reg, Vst0);
-        _ ->
-            error(bad_type_info)
-    end;
+    update_type(fun meet/2, Type, Reg, Vst);
 valfun_1({'%',_}, Vst) ->
     Vst;
 valfun_1({line,_}, Vst) ->
@@ -481,20 +490,21 @@ valfun_1({try_case,Reg}, #vst{current=#st{ct=[Fail|Fails]}}=Vst0) ->
 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, [Src], D1, Vst0),
+    extract_term(term, [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, [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) ->
+    extract_term(term, [Src], Dst, Vst);
+valfun_1({get_tuple_element,Src,N,Dst}, Vst) ->
     assert_not_literal(Src),
-    assert_type({tuple_element,I+1}, Src, Vst),
-    set_type_reg(term, Src, Dst, Vst);
+    assert_type({tuple_element,N+1}, Src, Vst),
+    Type = get_element_type(N+1, Src, Vst),
+    extract_term(Type, [Src], Dst, Vst);
 valfun_1({jump,{f,Lbl}}, Vst) ->
     kill_state(branch_state(Lbl, Vst));
 valfun_1(I, Vst) ->
@@ -529,19 +539,20 @@ valfun_2(_, _) ->
 
 %% Handle the remaining floating point instructions here.
 %% Floating point.
-valfun_3({fconv,Src,{fr,_}=Dst}, Vst) ->
-    assert_term(Src, Vst),
+valfun_3({fconv,Src,{fr,_}=Dst}, Vst0) ->
+    assert_term(Src, Vst0),
+    Vst = update_type(fun meet/2, number, Src, Vst0),
     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);
+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;
@@ -593,68 +604,70 @@ valfun_4({make_fun2,_,_,_,Live}, Vst) ->
     call(make_fun, Live, Vst);
 %% Other BIFs
 valfun_4({bif,tuple_size,{f,Fail},[Tuple],Dst}=I, Vst0) ->
-    TupleType0 = get_term_type(Tuple, Vst0),
-    Vst1 = branch_state(Fail, Vst0),
-    TupleType = upgrade_tuple_type({tuple,[0]}, TupleType0),
-    Vst = set_aliased_type(TupleType, Tuple, Vst1),
+    Vst = type_test(Fail, {tuple,[0],#{}}, Tuple, Vst0),
     set_type_reg_expr({integer,[]}, I, Dst, Vst);
 valfun_4({bif,element,{f,Fail},[Pos,Tuple],Dst}, Vst0) ->
-    TupleType0 = get_term_type(Tuple, Vst0),
-    PosType = get_term_type(Pos, Vst0),
+    PosType = get_durable_term_type(Pos, Vst0),
+    ElementType = case PosType of
+                      {integer,I} -> get_element_type(I, Tuple, Vst0);
+                      _ -> term
+                  end,
+    InferredType = {tuple,[get_tuple_size(PosType)],#{}},
     Vst1 = branch_state(Fail, Vst0),
-    TupleType = upgrade_tuple_type({tuple,[get_tuple_size(PosType)]}, TupleType0),
-    Vst = set_aliased_type(TupleType, Tuple, Vst1),
-    set_type_reg(term, Tuple, Dst, Vst);
+    Vst = update_type(fun meet/2, InferredType, Tuple, Vst1),
+    extract_term(ElementType, [Tuple], Dst, Vst);
 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),
+valfun_4({bif,map_get,{f,Fail},[_Key,Map]=Ss,Dst}, Vst0) ->
+    validate_src(Ss, Vst0),
     Vst1 = branch_state(Fail, Vst0),
-    Vst = set_aliased_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),
+    Vst = update_type(fun meet/2, map, Map, Vst1),
+    extract_term(term, Ss, Dst, Vst);
+valfun_4({bif,is_map_key,{f,Fail},[_Key,Map]=Ss,Dst}, Vst0) ->
+    validate_src(Ss, Vst0),
     Vst1 = branch_state(Fail, Vst0),
-    Vst = set_aliased_type(map, Map, Vst1),
-    Type = propagate_fragility(bool, Src, Vst),
-    set_type_reg(Type, Dst, Vst);
-valfun_4({bif,Op,{f,Fail},[Cons]=Src,Dst}, Vst0)
+    Vst = update_type(fun meet/2, map, Map, Vst1),
+    extract_term(bool, Ss, Dst, Vst);
+valfun_4({bif,Op,{f,Fail},[Cons]=Ss,Dst}, Vst0)
   when Op =:= hd; Op =:= tl ->
-    validate_src(Src, Vst0),
+    validate_src(Ss, Vst0),
+    Vst = type_test(Fail, cons, Cons, Vst0),
+    Type = bif_type(Op, Ss, Vst),
+    extract_term(Type, Ss, Dst, Vst);
+valfun_4({bif,Op,{f,Fail},Ss,Dst}, Vst0) ->
+    validate_src(Ss, Vst0),
     Vst1 = branch_state(Fail, Vst0),
-    Vst = set_aliased_type(cons, Cons, Vst1),
-    Type0 = bif_type(Op, Src, Vst),
-    Type = propagate_fragility(Type0, 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) ->
+
+    %% Infer argument types. Note that we can't type_test in the general case
+    %% as the BIF could fail for reasons other than bad arguments.
+    ArgTypes = bif_arg_types(Op, Ss),
+    Vst = foldl(fun({Arg, T}, Vsti) ->
+                        update_type(fun meet/2, T, Arg, Vsti)
+                end, Vst1, zip(Ss, ArgTypes)),
+
+    Type = bif_type(Op, Ss, Vst),
+    extract_term(Type, Ss, Dst, Vst);
+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),
     St = kill_heap_allocation(St0),
     Vst1 = Vst0#vst{current=St},
     Vst2 = branch_state(Fail, Vst1),
-    Vst3 = prune_x_regs(Live, Vst2),
-    Vst = case Op of
-              map_size ->
-                  set_type(map, hd(Src), Vst3);
-              _ ->
-                  Vst3
-          end,
-    validate_src(Src, Vst),
-    Type0 = bif_type(Op, Src, Vst),
-    Type = propagate_fragility(Type0, Src, Vst),
-    set_type_reg(Type, Dst, Vst);
+
+    ArgTypes = bif_arg_types(Op, Ss),
+    Vst3 = foldl(fun({Arg, T}, Vsti) ->
+                         update_type(fun meet/2, T, Arg, Vsti)
+                 end, Vst2, zip(Ss, ArgTypes)),
+
+    Type = bif_type(Op, Ss, Vst3),
+    Vst = prune_x_regs(Live, Vst3),
+    extract_term(Type, Ss, Dst, Vst, Vst0);
 valfun_4(return, #vst{current=#st{numy=none}}=Vst) ->
-    assert_term({x,0}, Vst),
+    assert_not_fragile({x,0}, Vst),
     kill_state(Vst);
 valfun_4(return, #vst{current=#st{numy=NumY}}) ->
     error({stack_frame,NumY});
@@ -664,7 +677,7 @@ valfun_4({loop_rec,{f,Fail},Dst}, Vst0) ->
     %% 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);
+    create_term({fragile,term}, Dst, Vst);
 valfun_4({wait,_}, Vst) ->
     verify_y_init(Vst),
     kill_state(Vst);
@@ -679,65 +692,30 @@ valfun_4(timeout, #vst{current=St}=Vst) ->
     Vst#vst{current=St#st{x=init_regs(0, term)}};
 valfun_4(send, Vst) ->
     call(send, 2, Vst);
-valfun_4({set_tuple_element,Src,Tuple,I}, Vst) ->
-    assert_term(Src, Vst),
-    assert_type({tuple_element,I+1}, Tuple, Vst),
-    Vst;
+valfun_4({set_tuple_element,Src,Tuple,N}, Vst) ->
+    I = N + 1,
+    assert_not_fragile(Src, Vst),
+    assert_type({tuple_element,I}, Tuple, Vst),
+    {tuple, Sz, Es0} = get_term_type(Tuple, Vst),
+    Es = set_element_type(I, get_term_type(Src, Vst), Es0),
+    set_aliased_type({tuple, Sz, Es}, Tuple, Vst);
 %% Match instructions.
 valfun_4({select_val,Src,{f,Fail},{list,Choices}}, Vst0) ->
     assert_term(Src, Vst0),
     assert_choices(Choices),
     Vst = branch_state(Fail, Vst0),
     kill_state(select_val_branches(Src, Choices, Vst));
-valfun_4({select_tuple_arity,Tuple,{f,Fail},{list,Choices}}, Vst) ->
-    assert_type(tuple, Tuple, Vst),
+valfun_4({select_tuple_arity,Tuple,{f,Fail},{list,Choices}}, Vst0) ->
+    assert_type(tuple, Tuple, Vst0),
     assert_arities(Choices),
-    TupleType = case get_term_type(Tuple, Vst) of
-                    {fragile,TupleType0} -> TupleType0;
-                    TupleType0 -> TupleType0
-                end,
-    kill_state(branch_arities(Choices, Tuple, TupleType,
-                              branch_state(Fail, Vst)));
+    Vst = branch_state(Fail, Vst0),
+    kill_state(branch_arities(Choices, Tuple, Vst));
 
 %% New bit syntax matching instructions.
-valfun_4({test,bs_start_match3,{f,Fail},Live,[Src],Dst}, Vst0) ->
-    %% Match states are always okay as input.
-    SrcType = get_move_term_type(Src, Vst0),
-    DstType = propagate_fragility(bsm_match_state(), [Src], Vst0),
-    verify_live(Live, Vst0),
-    verify_y_init(Vst0),
-    Vst1 = prune_x_regs(Live, Vst0),
-    BranchVst = case SrcType of
-                    #ms{} ->
-                        %% The failure branch will never be taken when Src is a
-                        %% match context. Therefore, the type for Src at the
-                        %% failure label must not be match_context (or we could
-                        %% reject legal code).
-                        set_type_reg(term, Src, Vst1);
-                    _ ->
-                        Vst1
-                end,
-    Vst = branch_state(Fail, BranchVst),
-    set_type_reg(DstType, Dst, Vst);
-valfun_4({test,bs_start_match2,{f,Fail},Live,[Src,Slots],Dst}, Vst0) ->
-    %% Match states are always okay as input.
-    SrcType = get_move_term_type(Src, Vst0),
-    DstType = propagate_fragility(bsm_match_state(Slots), [Src], Vst0),
-    verify_live(Live, Vst0),
-    verify_y_init(Vst0),
-    Vst1 = prune_x_regs(Live, Vst0),
-    BranchVst = case SrcType of
-                    #ms{} ->
-                        %% The failure branch will never be taken when Src is a
-                        %% match context. Therefore, the type for Src at the
-                        %% failure label must not be match_context (or we could
-                        %% reject legal code).
-                        set_type_reg(term, Src, Vst1);
-                    _ ->
-                        Vst1
-                end,
-    Vst = branch_state(Fail, BranchVst),
-    set_type_reg(DstType, 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);
@@ -779,74 +757,82 @@ valfun_4({bs_get_position, Ctx, Dst, Live}, Vst0) ->
     verify_live(Live, Vst0),
     verify_y_init(Vst0),
     Vst = prune_x_regs(Live, Vst0),
-    set_type_reg(bs_position, Dst, Vst);
+    create_term(bs_position, Dst, Vst);
 valfun_4({bs_set_position, Ctx, Pos}, Vst) ->
     bsm_validate_context(Ctx, Vst),
     assert_type(bs_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_aliased_type(Type, Tuple, branch_state(Lbl, Vst));
-valfun_4({test,is_nonempty_list,{f,Lbl},[Cons]}, Vst) ->
-    assert_term(Cons, Vst),
-    Type = cons,
-    set_aliased_type(Type, Cons, branch_state(Lbl, Vst));
-valfun_4({test,test_arity,{f,Lbl},[Tuple,Sz]}, Vst) when is_integer(Sz) ->
-    assert_type(tuple, Tuple, Vst),
-    Type = {tuple,Sz},
-    set_aliased_type(Type, Tuple, branch_state(Lbl, Vst));
-valfun_4({test,is_tagged_tuple,{f,Lbl},[Src,Sz,_Atom]}, Vst) ->
-    validate_src([Src], Vst),
-    Type = {tuple,Sz},
-    set_aliased_type(Type, Src, branch_state(Lbl, Vst));
+valfun_4({test,is_atom,{f,Lbl},[Src]}, Vst) ->
+    type_test(Lbl, {atom,[]}, 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_list,{f,Lbl},[Src]}, Vst) ->
+    type_test(Lbl, list, Src, Vst);
+valfun_4({test,is_nil,{f,Lbl},[Src]}, Vst) ->
+    type_test(Lbl, nil, Src, Vst);
+valfun_4({test,is_map,{f,Lbl},[Src]}, Vst) ->
+    case Src of
+        {Tag,_} when Tag =:= x; Tag =:= y ->
+            type_test(Lbl, map, Src, Vst);
+        {literal,Map} when is_map(Map) ->
+            Vst;
+        _ ->
+            assert_term(Src, Vst),
+            kill_state(Vst)
+    end;
+valfun_4({test,test_arity,{f,Lbl},[Tuple,Sz]}, Vst0) when is_integer(Sz) ->
+    assert_type(tuple, Tuple, Vst0),
+    Vst = branch_state(Lbl, Vst0),
+    update_type(fun meet/2, {tuple,Sz,#{}}, Tuple, Vst);
+valfun_4({test,is_tagged_tuple,{f,Lbl},[Src,Sz,Atom]}, Vst0) ->
+    assert_term(Src, Vst0),
+    Vst = branch_state(Lbl, Vst0),
+    update_type(fun meet/2, {tuple,Sz,#{ 1 => Atom }}, Src, 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 ->
-            Type = map,
-	    set_aliased_type(Type, Src, Vst);
-	{literal,Map} when is_map(Map) ->
-	    Vst0;
-	_ ->
-	    kill_state(Vst0)
-    end;
-valfun_4({test,is_eq_exact,{f,Lbl},[Src,Val]=Ss}, Vst0) ->
-    validate_src(Ss, Vst0),
-    Infer = infer_types(Src, Vst0),
-    Vst1 = Infer(Val, Vst0),
-    Vst = branch_state(Lbl, Vst1),
-    case Val of
-        {literal,Tuple} when is_tuple(Tuple) ->
-            Type0 = get_term_type(Val, Vst),
-            Type = upgrade_tuple_type({tuple,tuple_size(Tuple)},
-                                      Type0),
-            set_aliased_type(Type, Src, Vst);
-        _ ->
-            Vst
-    end;
+valfun_4({test,is_eq_exact,{f,Lbl},[Src,Val]=Ss}, Vst) ->
+    validate_src(Ss, Vst),
+    complex_test(Lbl,
+                 fun(FailVst) ->
+                         update_ne_types(Src, Val, FailVst)
+                 end,
+                 fun(SuccVst) ->
+                         update_eq_types(Src, Val, SuccVst)
+                 end, Vst);
+valfun_4({test,is_ne_exact,{f,Lbl},[Src,Val]=Ss}, Vst) ->
+    validate_src(Ss, Vst),
+    complex_test(Lbl,
+                 fun(FailVst) ->
+                         update_eq_types(Src, Val, FailVst)
+                 end,
+                 fun(SuccVst) ->
+                         update_ne_types(Src, Val, SuccVst)
+                 end, Vst);
 valfun_4({test,_Op,{f,Lbl},Src}, Vst) ->
     validate_src(Src, Vst),
     branch_state(Lbl, Vst);
 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));
+    assert_not_fragile(A, Vst),
+    assert_not_fragile(B, Vst),
+    create_term({integer,[]}, Dst, branch_state(Fail, Vst));
 valfun_4({bs_utf8_size,{f,Fail},A,Dst}, Vst) ->
     assert_term(A, Vst),
-    set_type_reg({integer,[]}, Dst, branch_state(Fail, Vst));
+    create_term({integer,[]}, Dst, branch_state(Fail, Vst));
 valfun_4({bs_utf16_size,{f,Fail},A,Dst}, Vst) ->
     assert_term(A, Vst),
-    set_type_reg({integer,[]}, Dst, branch_state(Fail, Vst));
+    create_term({integer,[]}, Dst, branch_state(Fail, Vst));
 valfun_4({bs_init2,{f,Fail},Sz,Heap,Live,_,Dst}, Vst0) ->
     verify_live(Live, Vst0),
     verify_y_init(Vst0),
@@ -854,12 +840,12 @@ valfun_4({bs_init2,{f,Fail},Sz,Heap,Live,_,Dst}, Vst0) ->
 	is_integer(Sz) ->
 	    ok;
 	true ->
-	    assert_term(Sz, Vst0)
+	    assert_not_fragile(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);
+    create_term(binary, Dst, Vst);
 valfun_4({bs_init_bits,{f,Fail},Sz,Heap,Live,_,Dst}, Vst0) ->
     verify_live(Live, Vst0),
     verify_y_init(Vst0),
@@ -872,43 +858,43 @@ valfun_4({bs_init_bits,{f,Fail},Sz,Heap,Live,_,Dst}, Vst0) ->
     Vst1 = heap_alloc(Heap, Vst0),
     Vst2 = branch_state(Fail, Vst1),
     Vst = prune_x_regs(Live, Vst2),
-    set_type_reg(binary, Dst, Vst);
+    create_term(binary, Dst, Vst);
 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),
+    assert_not_fragile(Bits, Vst0),
+    assert_not_fragile(Bin, Vst0),
     Vst1 = heap_alloc(Heap, Vst0),
     Vst2 = branch_state(Fail, Vst1),
     Vst = prune_x_regs(Live, Vst2),
-    set_type_reg(binary, Dst, Vst);
+    create_term(binary, Dst, Vst);
 valfun_4({bs_private_append,{f,Fail},Bits,_Unit,Bin,_Flags,Dst}, Vst0) ->
-    assert_term(Bits, Vst0),
-    assert_term(Bin, Vst0),
+    assert_not_fragile(Bits, Vst0),
+    assert_not_fragile(Bin, Vst0),
     Vst = branch_state(Fail, Vst0),
-    set_type_reg(binary, Dst, Vst);
+    create_term(binary, Dst, Vst);
 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),
+    assert_not_fragile(Sz, Vst),
+    assert_not_fragile(Src, Vst),
     branch_state(Fail, Vst);
 valfun_4({bs_put_float,{f,Fail},Sz,_,_,Src}, Vst) ->
-    assert_term(Sz, Vst),
-    assert_term(Src, Vst),
+    assert_not_fragile(Sz, Vst),
+    assert_not_fragile(Src, Vst),
     branch_state(Fail, Vst);
 valfun_4({bs_put_integer,{f,Fail},Sz,_,_,Src}, Vst) ->
-    assert_term(Sz, Vst),
-    assert_term(Src, Vst),
+    assert_not_fragile(Sz, Vst),
+    assert_not_fragile(Src, Vst),
     branch_state(Fail, Vst);
 valfun_4({bs_put_utf8,{f,Fail},_,Src}, Vst) ->
-    assert_term(Src, Vst),
+    assert_not_fragile(Src, Vst),
     branch_state(Fail, Vst);
 valfun_4({bs_put_utf16,{f,Fail},_,Src}, Vst) ->
-    assert_term(Src, Vst),
+    assert_not_fragile(Src, Vst),
     branch_state(Fail, Vst);
 valfun_4({bs_put_utf32,{f,Fail},_,Src}, Vst) ->
-    assert_term(Src, Vst),
+    assert_not_fragile(Src, Vst),
     branch_state(Fail, Vst);
 %% Map instructions.
 valfun_4({put_map_assoc,{f,Fail},Src,Dst,Live,{list,List}}, Vst) ->
@@ -923,42 +909,76 @@ valfun_4(_, _) ->
 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([]) -> [].
+    complex_test(Fail,
+                 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, Vst0).
+
+%% 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, [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) ->
+extract_map_vals([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.
+    Vsti = extract_term(term, [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) ->
     assert_type(map, Src, Vst0),
     verify_live(Live, Vst0),
     verify_y_init(Vst0),
-    foreach(fun (Term) -> assert_term(Term, Vst0) end, List),
+    [assert_not_fragile(Term, Vst0) || Term <- 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).
+    create_term(map, Dst, Vst).
+
+%%
+%% 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, and retain the incoming type if it
+    %% succeeds (match context or not).
+    complex_test(Fail,
+                 fun(FailVst) ->
+                         set_aliased_type(term, Src, FailVst)
+                 end,
+                 fun(SuccVst0) ->
+                         SuccVst = prune_x_regs(Live, SuccVst0),
+                         extract_term(Type, [Src], Dst, SuccVst, Vst)
+                 end, Vst).
 
 %%
 %% Common code for validating bs_get* instructions.
@@ -969,7 +989,7 @@ validate_bs_get(Fail, Ctx, Live, Type, Dst, Vst0) ->
     verify_y_init(Vst0),
     Vst1 = prune_x_regs(Live, Vst0),
     Vst = branch_state(Fail, Vst1),
-    set_type_reg(Type, Dst, Vst).
+    create_term(Type, Dst, Vst).
 
 %%
 %% Common code for validating bs_skip_utf* instructions.
@@ -1042,43 +1062,60 @@ verify_call_args(_, Live, _) ->
 verify_call_args_1(0, _) -> ok;
 verify_call_args_1(N, Vst) ->
     X = N - 1,
-    get_term_type({x,X}, Vst),
+    assert_not_fragile({x,X}, Vst),
     verify_call_args_1(X, Vst).
 
 verify_local_call(Lbl, Live, Vst) ->
-    F = fun({R, _Ctx}) ->
-                verify_call_match_context(Lbl, R, Vst)
-          end,
-    MsRegs = all_ms_in_x_regs(Live, Vst),
-    verify_no_ms_aliases(MsRegs),
-    foreach(F, MsRegs).
-
-all_ms_in_x_regs(0, _Vst) ->
+    TRegs = typed_call_regs(Live, Vst),
+    [verify_arg_type(Lbl, R, Type, Vst) || {R, Type} <- TRegs],
+    verify_no_ms_aliases(TRegs),
+    ok.
+
+typed_call_regs(0, _Vst) ->
     [];
-all_ms_in_x_regs(Live0, Vst) ->
+typed_call_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)
-    end.
+    [{R, get_move_term_type(R, Vst)} | typed_call_regs(Live, Vst)].
 
 %% Verifies that the same match context isn't present twice.
-verify_no_ms_aliases(MsRegs) ->
-    CtxIds = [Id || {_, #ms{id=Id}} <- MsRegs],
+verify_no_ms_aliases(Regs) ->
+    CtxIds = [Id || {_, #ms{id=Id}} <- Regs],
     UniqueCtxIds = ordsets:from_list(CtxIds),
     if
         length(UniqueCtxIds) < length(CtxIds) ->
-            error({multiple_match_contexts, MsRegs});
+            error({multiple_match_contexts, Regs});
         length(UniqueCtxIds) =:= length(CtxIds) ->
             ok
     end.
 
-%% Verifies that the target label accepts match contexts in the given register.
-verify_call_match_context(Lbl, Ctx, #vst{ft=Ft}) ->
-    case gb_trees:lookup({Lbl, Ctx}, Ft) of
-        {value, match_context} -> ok;
-        none -> error(no_bs_start_match2)
+%% 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, bool} when GivenType =:= {atom, true};
+                           GivenType =:= {atom, false};
+                           GivenType =:= {atom, []} ->
+            %% We don't yet support upgrading true/false to bool, so we
+            %% assume unknown atoms can be bools when validating calls.
+            ok;
+        {value, #ms{}} ->
+            %% Functions that accept match contexts also accept all other
+            %% terms. This will change once we support union types.
+            ok;
+        {value, RequiredType} ->
+            case meet(GivenType, RequiredType) of
+                none -> error({bad_arg_type, Reg, GivenType, RequiredType});
+                _ -> ok
+            end;
+        none ->
+            ok
     end.
 
 allocate(Zero, Stk, Heap, Live, #vst{current=#st{numy=none}}=Vst0) ->
@@ -1181,8 +1218,8 @@ assert_arities(_) -> error(bad_tuple_arity_list).
 %%%   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).
@@ -1237,7 +1274,10 @@ 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)
@@ -1298,27 +1338,21 @@ bsm_restore(Reg, SavePoint, Vst) ->
 	_ -> error({illegal_restore,SavePoint,range})
     end.
 
-
 select_val_branches(Src, Choices, Vst) ->
     Infer = infer_types(Src, Vst),
-    select_val_branches_1(Choices, Infer, Vst).
+    select_val_branches_1(Choices, Src, Infer, Vst).
 
-select_val_branches_1([Val,{f,L}|T], Infer, Vst0) ->
-    Vst = branch_state(L, Infer(Val, Vst0)),
-    select_val_branches_1(T, Infer, Vst);
-select_val_branches_1([], _, Vst) -> Vst.
+select_val_branches_1([Val,{f,L}|T], Src, Infer, Vst0) ->
+    Vst1 = set_aliased_type(Val, Src, Infer(Val, Vst0)),
+    Vst = branch_state(L, Vst1),
+    select_val_branches_1(T, Src, Infer, Vst);
+select_val_branches_1([], _, _, Vst) -> Vst.
 
 infer_types(Src, Vst) ->
     case get_def(Src, Vst) of
-        {bif,is_map,{f,_},[Map],_} ->
-            fun({atom,true}, S) -> set_type_reg(map, Map, S);
-               (_, S) -> S
-            end;
         {bif,tuple_size,{f,_},[Tuple],_} ->
             fun({integer,Arity}, S) ->
-                    Type0 = get_term_type(Tuple, S),
-                    Type = upgrade_tuple_type({tuple,Arity}, Type0),
-                    set_type(Type, Tuple, S);
+                    update_type(fun meet/2, {tuple,Arity,#{}}, Tuple, S);
                (_, S) -> S
             end;
         {bif,'=:=',{f,_},[ArityReg,{integer,_}=Val],_} when ArityReg =/= Src ->
@@ -1327,24 +1361,132 @@ infer_types(Src, Vst) ->
                     Infer(Val, S);
                (_, S) -> S
             end;
+        {bif,is_atom,{f,_},[Src],_} ->
+            infer_type_test_bif({atom,[]}, Src);
+        {bif,is_boolean,{f,_},[Src],_} ->
+            infer_type_test_bif(bool, Src);
+        {bif,is_binary,{f,_},[Src],_} ->
+            infer_type_test_bif(binary, Src);
+        {bif,is_bitstring,{f,_},[Src],_} ->
+            infer_type_test_bif(binary, Src);
+        {bif,is_float,{f,_},[Src],_} ->
+            infer_type_test_bif(float, Src);
+        {bif,is_integer,{f,_},[Src],_} ->
+            infer_type_test_bif({integer,{}}, Src);
+        {bif,is_list,{f,_},[Src],_} ->
+            infer_type_test_bif(list, Src);
+        {bif,is_map,{f,_},[Src],_} ->
+            infer_type_test_bif(map, Src);
+        {bif,is_number,{f,_},[Src],_} ->
+            infer_type_test_bif(number, Src);
+        {bif,is_tuple,{f,_},[Src],_} ->
+            infer_type_test_bif({tuple,[],#{}}, Src);
         _ ->
             fun(_, S) -> S end
     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_alias(Reg1, Reg2, #vst{current=St0}=Vst) ->
-    case Reg1 of
-        {Kind,_} when Kind =:= x; Kind =:= y ->
-            #st{aliases=Aliases0} = St0,
-            Aliases = Aliases0#{Reg1=>Reg2,Reg2=>Reg1},
-            St = St0#st{aliases=Aliases},
-            Vst#vst{current=St};
-        _ ->
-            Vst
-    end.
+%% 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_term_type_1(Src, Vst) of
+        initialized -> set_type_reg(initialized, Dst, Vst);
+        _ -> assign_1(Src, Dst, Vst)
+    end;
+assign({Kind,_}=Reg, Dst, Vst) when Kind =:= x; Kind =:= y ->
+    assign_1(Reg, Dst, Vst);
+assign(Literal, Dst, Vst) ->
+    create_term(get_term_type(Literal, Vst), Dst, Vst).
+
+%% Creates a completely new term with the given type.
+create_term(Type, Dst, Vst) ->
+    set_type_reg(Type, Dst, Vst).
+
+%% Extracts a term from Ss, propagating fragility.
+extract_term(Type, Ss, Dst, Vst) ->
+    extract_term(Type, Ss, Dst, Vst, Vst).
+
+%% As extract_term/4, but uses the incoming Vst for fragility in case x-regs
+%% have been pruned and the sources can no longer be found.
+extract_term(Type0, Ss, Dst, Vst, OrigVst) ->
+    Type = propagate_fragility(Type0, Ss, OrigVst),
+    set_type_reg(Type, Dst, Vst).
+
+%% Helper functions for tests that alter state on both the success and fail
+%% branches, keeping the states from tainting each other.
+complex_test(Fail, FailFun, SuccFun, Vst0) ->
+    #vst{current=St0} = Vst0,
+    Vst1 = FailFun(Vst0),
+    Vst2 = branch_state(Fail, Vst1),
+    Vst = Vst2#vst{current=St0},
+    SuccFun(Vst).
+
+%% Helper function for simple "is_type" tests.
+type_test(Fail, Type, Reg, Vst) ->
+    assert_term(Reg, Vst),
+    complex_test(Fail,
+                 fun(FailVst) ->
+                         update_type(fun subtract/2, Type, Reg, FailVst)
+                 end,
+                 fun(SuccVst) ->
+                         update_type(fun meet/2, Type, Reg, SuccVst)
+                 end, 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, Type0, Reg, 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 use the
+    %% new type instead of 'none'.
+    Type = case Merge(get_durable_term_type(Reg, Vst), Type0) of
+               none -> Type0;
+               T -> T
+           end,
+    set_aliased_type(Type, Reg, Vst).
+
+update_ne_types(LHS, RHS, Vst) ->
+    update_type(fun subtract/2, get_durable_term_type(RHS, Vst), LHS, Vst).
+
+update_eq_types(LHS, RHS, Vst0) ->
+    Infer = infer_types(LHS, Vst0),
+    Vst1 = Infer(RHS, Vst0),
+
+    T1 = get_durable_term_type(LHS, Vst1),
+    T2 = get_durable_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) ->
+    Type = get_move_term_type(Src, Vst0),
+    Vst = set_type_reg(Type, Dst, Vst0),
+
+    #vst{current=St0} = Vst,
+    #st{aliases=Aliases0} = St0,
+    Aliases = Aliases0#{Src=>Dst,Dst=>Src},
+    St = St0#st{aliases=Aliases},
+
+    Vst#vst{current=St}.
 
 set_aliased_type(Type, Reg, #vst{current=#st{aliases=Aliases}}=Vst0) ->
     Vst1 = set_type(Type, Reg, Vst0),
@@ -1366,8 +1508,10 @@ kill_aliases(Reg, #st{aliases=Aliases0}=St) ->
             St
     end.
 
-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(Type, {x,_}=Reg, Vst) ->
+    set_type_reg(Type, Reg, Reg, Vst);
+set_type(Type, {y,_}=Reg, Vst) ->
+    set_type_reg(Type, Reg, Reg, Vst);
 set_type(_, _, #vst{}=Vst) -> Vst.
 
 set_type_reg(Type, Src, Dst, Vst) ->
@@ -1377,7 +1521,6 @@ set_type_reg(Type, Src, Dst, Vst) ->
         _ ->
             set_type_reg(Type, Dst, Vst)
     end.
-
 set_type_reg(Type, Reg, Vst) ->
     set_type_reg_expr(Type, none, Reg, Vst).
 
@@ -1471,6 +1614,19 @@ assert_term(Src, Vst) ->
     get_term_type(Src, Vst),
     ok.
 
+assert_not_fragile(Src, Vst) ->
+    case get_term_type(Src, Vst) of
+        {fragile, _} -> error({fragile_message_reference, Src});
+        _ -> ok
+    end.
+
+assert_literal(nil) -> ok;
+assert_literal({atom,A}) when is_atom(A) -> ok;
+assert_literal({float,F}) when is_float(F) -> ok;
+assert_literal({integer,I}) when is_integer(I) -> ok;
+assert_literal({literal,_L}) -> ok;
+assert_literal(T) -> error({literal_required,T}).
+
 assert_not_literal({x,_}) -> ok;
 assert_not_literal({y,_}) -> ok;
 assert_not_literal(Literal) -> error({literal_not_allowed,Literal}).
@@ -1507,17 +1663,22 @@ assert_not_literal(Literal) -> error({literal_not_allowed,Literal}).
 %%
 %% 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.
@@ -1533,7 +1694,7 @@ assert_not_literal(Literal) -> error({literal_not_allowed,Literal}).
 %%
 %% map			Map.
 %%
-%%
+%% none                 A conflict in types. There will be an exception at runtime.
 %%
 %% FRAGILITY
 %% ---------
@@ -1546,22 +1707,98 @@ assert_not_literal(Literal) -> error({literal_not_allowed,Literal}).
 %% 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)
+%% 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({literal,_}=T1, T2) ->
+    meet_literal(T1, T2);
+meet(T1, {literal,_}=T2) ->
+    meet_literal(T2, T1);
+meet(term, Other) ->
+    Other;
+meet(Other, term) ->
+    Other;
+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],_} ->
+                    {tuple,[erlang:max(Sz1, Sz2)],Es};
+                {Sz1,[Sz2],_} when Sz2 =< Sz1 ->
+                    {tuple,Sz1,Es};
+                {Sz,Sz,_} ->
+                    {tuple,Sz,Es};
+                {_,_,_} ->
+                    none
+            end;
+        {_,_} -> none
     end.
 
+%% Meets types of literals.
+meet_literal({literal,_}=Lit, T) ->
+    meet_literal(T, get_literal_type(Lit));
+meet_literal(T1, T2) ->
+    %% We're done extracting the types, try merging them again.
+    meet(T1, T2).
+
+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.
+
+%% subtract(Type1, Type2) -> Type
+%%  Subtract Type2 from Type2. Example:
+%%      subtract(list, nil) -> cons
+
+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_durable_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) ->
@@ -1571,40 +1808,43 @@ 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_durable_term_type(Src, Vst)).
+
+get_element_type_1(Index, {tuple,Sz,Es}) ->
+    case Es of
+        #{ Index := Type } -> Type;
+        #{} when Index =< Sz -> term;
+        #{} -> none
+    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_durable_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).
+%%  Fragility will be stripped.
+
+get_durable_term_type(Src, Vst) ->
+    case get_term_type(Src, Vst) of
+        {fragile,Type} -> Type;
+        Type -> Type
+    end.
 
 %% get_move_term_type(Src, ValidatorState) -> Type
 %%  Get the type of the source Src. The returned type Type will be
@@ -1635,14 +1875,6 @@ get_term_type(Src, Vst) ->
 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,Tuple}, _) when is_tuple(Tuple) ->
-    {tuple,tuple_size(Tuple)};
-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;
@@ -1654,7 +1886,8 @@ get_term_type_1({y,Y}=Reg, #vst{current=#st{y=Ys}}) when is_integer(Y) ->
 	{value,uninitialized} -> error({uninitialized_reg,Reg});
 	{value,Type} -> Type
     end;
-get_term_type_1(Src, _) -> error({bad_source,Src}).
+get_term_type_1(Src, _) ->
+    get_literal_type(Src).
 
 get_def(Src, #vst{current=#st{defs=Defs}}) ->
     case Defs of
@@ -1662,23 +1895,45 @@ get_def(Src, #vst{current=#st{defs=Defs}}) ->
         #{} -> none
     end.
 
-%% 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_arities([Sz,{f,L}|T], Tuple, {tuple,[_]}=Type0, Vst0) when is_integer(Sz) ->
-    Vst1 = set_aliased_type({tuple,Sz}, Tuple, Vst0),
+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) -> value_to_type(Tuple);
+get_literal_type({literal,_}) -> term;
+get_literal_type(T) -> error({not_literal,T}).
+
+value_to_type([]) -> nil;
+value_to_type(A) when is_atom(A) -> {atom, A};
+value_to_type(F) when is_float(F) -> {float, F};
+value_to_type(I) when is_integer(I) -> {integer, I};
+value_to_type(T) when is_tuple(T) ->
+     {Es,_} = foldl(fun(Val, {Es0, Index}) ->
+                            Type = value_to_type(Val),
+                            Es = set_element_type(Index, Type, Es0),
+                            {Es, Index + 1}
+                    end, {#{}, 1}, tuple_to_list(T)),
+     {tuple, tuple_size(T), Es};
+value_to_type(L) -> {literal, L}.
+
+branch_arities(List, Tuple, Vst) ->
+    Type = get_durable_term_type(Tuple, Vst),
+    branch_arities(List, Tuple, Type, Vst).
+
+branch_arities([Sz,{f,L}|T], Tuple, {tuple,[_],Es0}=Type0, Vst0) when is_integer(Sz) ->
+    %% Filter out element types that are no longer valid.
+    Es = maps:filter(fun(Index, _Type) -> Index =< Sz end, Es0),
+    Vst1 = set_aliased_type({tuple,Sz,Es}, Tuple, Vst0),
     Vst = branch_state(L, Vst1),
     branch_arities(T, Tuple, Type0, Vst);
-branch_arities([Sz,{f,L}|T], Tuple, {tuple,Sz}=Type, Vst0) when is_integer(Sz) ->
+branch_arities([Sz,{f,L}|T], Tuple, {tuple,Sz,_Es}=Type, Vst0) when is_integer(Sz) ->
     %% The type is already correct. (This test is redundant.)
     Vst = branch_state(L, Vst0),
     branch_arities(T, Tuple, Type, Vst);
-branch_arities([Sz0,{f,_}|T], Tuple, {tuple,Sz}=Type, Vst)
+branch_arities([Sz0,{f,_}|T], Tuple, {tuple,Sz,_Es}=Type, Vst)
   when is_integer(Sz), Sz0 =/= Sz ->
     %% We already have an established different exact size for the tuple.
     %% This label can't possibly be reached.
@@ -1744,7 +1999,7 @@ merge_regs_1([{R1,_}|Rs1], [{R2,_}|_]=Rs2) when R1 < R2 ->
 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)];
+    [{R,join(Type1, Type2)}|merge_regs_1(Rs1, Rs2)];
 merge_regs_1([], []) -> [];
 merge_regs_1([], [_|_]) -> [];
 merge_regs_1([_|_], []) -> [].
@@ -1763,73 +2018,121 @@ merge_y_regs_1(Y, S, Regs0) when Y >= 0 ->
 	Type0 ->
 	    merge_y_regs_1(Y-1, S, Regs0);
 	Type1 ->
-	    Type = merge_types(Type0, Type1),
+	    Type = join(Type0, Type1),
 	    Regs = gb_trees:update(Y, Type, Regs0),
 	    merge_y_regs_1(Y-1, S, Regs)
     end;
 merge_y_regs_1(_, _, Regs) -> Regs.
 
-%% merge_types(Type1, Type2) -> Type
+%% join(Type1, Type2) -> Type
 %%  Return the most specific type possible.
 %%  Note: Type1 must NOT be the same as Type2.
-merge_types({fragile,Same}=Type, Same) ->
+join({literal,_}=T1, T2) ->
+    join_literal(T1, T2);
+join(T1, {literal,_}=T2) ->
+    join_literal(T2, T1);
+join({fragile,Same}=Type, Same) ->
     Type;
-merge_types({fragile,T1}, T2) ->
-    make_fragile(merge_types(T1, T2));
-merge_types(Same, {fragile,Same}=Type) ->
+join({fragile,T1}, T2) ->
+    make_fragile(join(T1, T2));
+join(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}) ->
+join(T1, {fragile,T2}) ->
+    make_fragile(join(T1, T2));
+join(uninitialized=I, _) -> I;
+join(_, uninitialized=I) -> I;
+join(initialized=I, _) -> I;
+join(_, initialized=I) -> I;
+join({catchtag,T0},{catchtag,T1}) ->
     {catchtag,ordsets:from_list(T0++T1)};
-merge_types({trytag,T0},{trytag,T1}) ->
+join({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}) 
+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;
-merge_types({Type,_}, number) 
+join({Type,_}, number) 
   when Type =:= integer; Type =:= float ->
     number;
-merge_types(number, {Type,_}) 
+join(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(cons, {literal,[_|_]}) ->
-    cons;
-merge_types({literal,[_|_]}, cons) ->
-    cons;
-merge_types({literal,[_|_]}, {literal,[_|_]}) ->
-    cons;
-merge_types(#ms{id=Id1,valid=B1,slots=Slots1},
+join(bool, {atom,A}) ->
+    join_bool(A);
+join({atom,A}, bool) ->
+    join_bool(A);
+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)};
-merge_types(T1, T2) when T1 =/= T2 ->
-    %% Too different. All we know is that the type is a 'term'.
+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(Size, EsA, EsB) ->
+    Es0 = join_elements(EsA, EsB),
+    MinSize = tuple_sz(Size),
+    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) ->
+    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,[]}.
+
 tuple_sz([Sz]) -> Sz;
 tuple_sz(Sz) -> Sz.
 
-merge_bool([]) -> {atom,[]};
-merge_bool(true) -> bool;
-merge_bool(false) -> bool;
-merge_bool(_) -> {atom,[]}.
-
 merge_aliases(Al0, Al1) when map_size(Al0) =< map_size(Al1) ->
     maps:filter(fun(K, V) ->
                         case Al1 of
@@ -1916,6 +2219,42 @@ propagate_fragility(Type, Ss, Vst) ->
         false -> Type
     end.
 
+%% Generic
+bif_arg_types(tuple_size, [_]) -> [{tuple,[0],#{}}];
+bif_arg_types(map_size, [_]) -> [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('byte_size', [_]) -> [binary];
+bif_arg_types('bit_size', [_]) -> [binary];
+%% Numerical
+bif_arg_types('-', [_]) -> [number];
+bif_arg_types('+', [_]) -> [number];
+bif_arg_types('*', [_,_]) -> [number, number];
+bif_arg_types('/', [_,_]) -> [number, number];
+bif_arg_types(ceil, [_]) -> [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].
+
 bif_type('-', Src, Vst) ->
     arith_type(Src, Vst);
 bif_type('+', Src, Vst) ->
@@ -1923,13 +2262,16 @@ bif_type('+', Src, Vst) ->
 bif_type('*', Src, Vst) ->
     arith_type(Src, Vst);
 bif_type(abs, [Num], Vst) ->
-    case get_term_type(Num, Vst) of
+    case get_durable_term_type(Num, Vst) of
 	{float,_}=T -> T;
 	{integer,_}=T -> T;
 	_ -> number
     end;
 bif_type(float, _, _) -> {float,[]};
 bif_type('/', _, _) -> {float,[]};
+%% Binary operations
+bif_type('byte_size', _, _) -> {integer,[]};
+bif_type('bit_size', _, _) -> {integer,[]};
 %% Integer operations.
 bif_type(ceil, [_], _) -> {integer,[]};
 bif_type('div', [_,_], _) -> {integer,[]};
@@ -1972,6 +2314,7 @@ bif_type(is_port, [_], _) -> bool;
 bif_type(is_reference, [_], _) -> bool;
 bif_type(is_tuple, [_], _) -> bool;
 %% Misc.
+bif_type(tuple_size, [_], _) -> {integer,[]};
 bif_type(node, [], _) -> {atom,[]};
 bif_type(node, [_], _) -> {atom,[]};
 bif_type(hd, [_], _) -> term;
@@ -2008,12 +2351,16 @@ is_bif_safe(_, _) -> false.
 
 arith_type([A], Vst) ->
     %% Unary '+' or '-'.
-    case get_term_type(A, Vst) of
+    case get_durable_term_type(A, Vst) of
+	{integer,_} -> {integer,[]};
 	{float,_} -> {float,[]};
         _ -> number
     end;
 arith_type([A,B], Vst) ->
-    case {get_term_type(A, Vst),get_term_type(B, Vst)} of
+    TypeA = get_durable_term_type(A, Vst),
+    TypeB = get_durable_term_type(B, Vst),
+    case {TypeA, TypeB} of
+	{{integer,_},{integer,_}} -> {integer,[]};
 	{{float,_},_} -> {float,[]};
 	{_,{float,_}} -> {float,[]};
 	{_,_} -> number
@@ -2024,21 +2371,36 @@ return_type({extfunc,M,F,A}, Vst) -> return_type_1(M, F, A, Vst);
 return_type(_, _) -> term.
 
 return_type_1(erlang, setelement, 3, Vst) ->
-    Tuple = {x,1},
+    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(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, '++', 2, Vst) ->
+    case get_term_type({x,0}, Vst) =:= cons orelse
+        get_term_type({x,1}, Vst) =:= cons of
+        true -> cons;
+        false -> list
     end;
+return_type_1(erlang, '--', 2, _Vst) ->
+    list;
 return_type_1(erlang, F, A, _) ->
     return_type_erl(F, A);
 return_type_1(math, F, A, _) ->
diff --git a/lib/compiler/src/beam_z.erl b/lib/compiler/src/beam_z.erl
index 677094b3cd..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}) ->
diff --git a/lib/compiler/src/compile.erl b/lib/compiler/src/compile.erl
index 14c8c5b4ab..11dea9524b 100644
--- a/lib/compiler/src/compile.erl
+++ b/lib/compiler/src/compile.erl
@@ -268,6 +268,10 @@ 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_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) ->
@@ -810,8 +814,6 @@ 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)},
@@ -823,20 +825,21 @@ kernel_passes() ->
      {pass,beam_kernel_to_ssa},
      {iff,dssa,{listing,"ssa"}},
      {iff,ssalint,{pass,beam_ssa_lint}},
-     {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"}},
+     {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}},
@@ -855,8 +858,6 @@ asm_passes() ->
 	 {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_jopt,{pass,beam_jump}},
 	 {iff,djmp,{listing,"jump"}},
 	 {unless,no_peep_opt,{pass,beam_peep}},
@@ -2084,7 +2085,6 @@ pre_load() ->
     L = [beam_a,
 	 beam_asm,
 	 beam_block,
-	 beam_bs,
 	 beam_clean,
 	 beam_dict,
 	 beam_except,
@@ -2120,7 +2120,6 @@ pre_load() ->
 	 erl_scan,
 	 sys_core_alias,
 	 sys_core_bsm,
-	 sys_core_dsetel,
 	 sys_core_fold,
 	 v3_core,
 	 v3_kernel],
diff --git a/lib/compiler/src/compiler.app.src b/lib/compiler/src/compiler.app.src
index 1472e3fde1..a086a3a8d3 100644
--- a/lib/compiler/src/compiler.app.src
+++ b/lib/compiler/src/compiler.app.src
@@ -24,7 +24,6 @@
 	     beam_a,
 	     beam_asm,
 	     beam_block,
-	     beam_bs,
 	     beam_clean,
 	     beam_dict,
 	     beam_disasm,
@@ -66,7 +65,6 @@
 	     rec_env,
 	     sys_core_alias,
 	     sys_core_bsm,
-	     sys_core_dsetel,
 	     sys_core_fold,
 	     sys_core_fold_lists,
 	     sys_core_inline,
diff --git a/lib/compiler/src/erl_bifs.erl b/lib/compiler/src/erl_bifs.erl
index ce9762899e..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().
 
@@ -195,6 +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/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 d848cd8f19..43c99be982 100644
--- a/lib/compiler/src/sys_core_fold.erl
+++ b/lib/compiler/src/sys_core_fold.erl
@@ -2667,12 +2667,20 @@ opt_build_stacktrace(#c_let{vars=[#c_var{name=Cooked}],
         #c_call{module=#c_literal{val=erlang},
                 name=#c_literal{val=raise},
                 args=[Class,Exp,#c_var{name=Cooked}]} ->
-            %% The stacktrace is only used in a call to erlang:raise/3.
-            %% There is no need to build the stacktrace. Replace the
-            %% call to erlang:raise/3 with the the raw_raise/3 instruction,
-            %% which will use a raw stacktrace.
-            #c_primop{name=#c_literal{val=raw_raise},
-                      args=[Class,Exp,RawStk]};
+            case core_lib:is_var_used(Cooked, #c_cons{hd=Class,tl=Exp}) of
+                true ->
+                    %% Not safe. The stacktrace is used in the class or
+                    %% reason.
+                    Let;
+                false ->
+                    %% The stacktrace is only used in the last
+                    %% argument for erlang:raise/3. There is no need
+                    %% to build the stacktrace. Replace the call to
+                    %% erlang:raise/3 with the the raw_raise/3
+                    %% instruction, which will use a raw stacktrace.
+                    #c_primop{name=#c_literal{val=raw_raise},
+                              args=[Class,Exp,RawStk]}
+            end;
         #c_let{vars=[#c_var{name=V}],arg=Arg,body=B0} when V =/= Cooked ->
             case core_lib:is_var_used(Cooked, Arg) of
                 false ->
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_core.erl b/lib/compiler/src/v3_core.erl
index 45e0ed5088..3699c9d22e 100644
--- a/lib/compiler/src/v3_core.erl
+++ b/lib/compiler/src/v3_core.erl
@@ -330,7 +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},
@@ -338,7 +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},
@@ -767,14 +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},
@@ -2058,17 +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
@@ -2627,7 +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 f7ca66b1da..86351bc0c5 100644
--- a/lib/compiler/src/v3_kernel.erl
+++ b/lib/compiler/src/v3_kernel.erl
@@ -1414,7 +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(_, _) -> 1.
 
 bif_vals(_, _, _) -> 1.
diff --git a/lib/compiler/test/Makefile b/lib/compiler/test/Makefile
index 40428b7f2d..db8eb7e2e1 100644
--- a/lib/compiler/test/Makefile
+++ b/lib/compiler/test/Makefile
@@ -105,6 +105,10 @@ 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)
@@ -113,6 +117,10 @@ 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)
@@ -141,19 +149,24 @@ EBIN = .
 # Targets
 # ----------------------------------------------------
 
-make_emakefile: $(NO_OPT_ERL_FILES) $(POST_OPT_ERL_FILES) \
-  $(INLINE_ERL_FILES) $(R21_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 \
 	+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)
 
@@ -174,6 +187,9 @@ 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 $@));' $< > $@
 
@@ -183,6 +199,9 @@ docs:
 %_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
 # ---------------------------------------------------- 
@@ -195,7 +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) $(R21_ERL_FILES) "$(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 da61931136..9380fe06c8 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),
@@ -88,8 +100,19 @@ coverage(_) ->
     {'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
@@ -104,3 +127,6 @@ bar(X) ->					%Line 8
 %% 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_ssa_SUITE.erl b/lib/compiler/test/beam_ssa_SUITE.erl
index e32e3eebfc..15cf9bcbf3 100644
--- a/lib/compiler/test/beam_ssa_SUITE.erl
+++ b/lib/compiler/test/beam_ssa_SUITE.erl
@@ -92,7 +92,13 @@ start_it([_|_]=MFA) ->
     end.
 
 tuple_matching(_Config) ->
-    do_tuple_matching({tag,42}).
+    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),
@@ -118,6 +124,12 @@ do_tuple_matching_3(Tuple) when is_tuple(Tuple) ->
             {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}).
 
diff --git a/lib/compiler/test/beam_type_SUITE.erl b/lib/compiler/test/beam_type_SUITE.erl
index a4459b95bf..a7ffc3f60a 100644
--- a/lib/compiler/test/beam_type_SUITE.erl
+++ b/lib/compiler/test/beam_type_SUITE.erl
@@ -116,8 +116,8 @@ 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;
@@ -213,11 +213,18 @@ 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_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),
@@ -246,6 +253,19 @@ do_booleans_1(B) ->
 	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,
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 661b48a080..585d0e7191 100644
--- a/lib/compiler/test/beam_validator_SUITE.erl
+++ b/lib/compiler/test/beam_validator_SUITE.erl
@@ -579,14 +579,26 @@ 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(Config) when is_list(Config) ->
-    Bug = lists:seq(1, 5),
+%%
+aliased_types_1(Bug, Config) ->
     if
         Config =/= [gurka, gaffel] -> %% Pointless branch.
             _ = hd(Bug),
@@ -594,6 +606,31 @@ aliased_types(Config) when is_list(Config) ->
             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.
+
 %%%-------------------------------------------------------------------------
 
 transform_remove(Remove, Module) ->
@@ -652,3 +689,6 @@ night(Turned) ->
     ok.
 
 participating(_, _, _, _) -> ok.
+
+id(I) ->
+    I.
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..69017d87e7 100644
--- a/lib/compiler/test/bs_construct_SUITE.erl
+++ b/lib/compiler/test/bs_construct_SUITE.erl
@@ -153,6 +153,8 @@ 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 +313,9 @@ 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 01f302ad21..2cfcb841a7 100644
--- a/lib/compiler/test/bs_match_SUITE.erl
+++ b/lib/compiler/test/bs_match_SUITE.erl
@@ -743,9 +743,19 @@ coverage(Config) when is_list(Config) ->
     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>>) ->
@@ -848,6 +858,29 @@ coverage_trim(<<C:8,T/binary>> = Bin, E0, E1, E2, E3, Acc) ->
             {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>>),
@@ -1814,11 +1847,10 @@ 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}
diff --git a/lib/compiler/test/compile_SUITE.erl b/lib/compiler/test/compile_SUITE.erl
index 6eae7b1404..408af80dd9 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) ->
@@ -370,43 +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, dssa, ".ssa"),
-    do_listing(Simple, TargetDir, dssaopt, ".ssaopt"),
-    do_listing(Simple, TargetDir, dprecg, ".precodegen"),
-    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, djmp, ".jump"),
-    do_listing(Simple, TargetDir, dclean, ".clean"),
-    do_listing(Simple, TargetDir, dpeep, ".peep"),
-    do_listing(Simple, TargetDir, dopt, ".optimize"),
-    do_listing(Simple, TargetDir, diffable, ".S"),
-
-    %% 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"),
@@ -422,24 +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, dssa, ".ssa"),
-    do_listing(Big, TargetDir, dssaopt, ".ssaopt"),
-    do_listing(Big, TargetDir, dprecg, ".precodegen"),
-    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"),
@@ -686,9 +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]),
@@ -1175,84 +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(guard_SUITE, {'-complex_not/1-fun-4-',1}) -> true;
-is_exception(guard_SUITE, {'-complex_not/1-fun-5-',1}) -> true;
-is_exception(guard_SUITE, {bad_guards,1}) -> true;
-is_exception(guard_SUITE, {nested_not_2b,4}) -> true;
-is_exception(_, _) -> false.
-
 sys_pre_attributes(Config) ->
     DataDir = proplists:get_value(data_dir, Config),
     File = filename:join(DataDir, "attributes.erl"),
@@ -1469,44 +1383,49 @@ 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_put_tuple2,
-                          no_get_hd_tl,no_ssa_opt_record,
-                          no_line_info,no_stack_trimming]),
-
-    125 = highest_opcode(DataDir, small_float,
-                         [no_get_hd_tl,no_line_info,no_ssa_opt_float]),
-
-    132 = highest_opcode(DataDir, small,
-                         [no_put_tuple2,no_get_hd_tl,no_ssa_opt_record,
-                          no_ssa_opt_float,no_line_info,no_bsm3]),
-
-    153 = highest_opcode(DataDir, small, [r20]),
-    153 = highest_opcode(DataDir, small, [r21]),
-
-    136 = highest_opcode(DataDir, big, [no_put_tuple2,no_get_hd_tl,
-                                        no_ssa_opt_record,no_line_info]),
-
-    153 = highest_opcode(DataDir, big, [no_put_tuple2,no_get_hd_tl,
-                                        no_ssa_opt_record]),
-    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, [r21]),
-
-    164 = highest_opcode(DataDir, small_maps, []),
-    164 = 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) ->
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 3fca1434ae..adfebd5158 100644
--- a/lib/compiler/test/core_fold_SUITE.erl
+++ b/lib/compiler/test/core_fold_SUITE.erl
@@ -502,7 +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..831e8279aa 100644
--- a/lib/compiler/test/float_SUITE.erl
+++ b/lib/compiler/test/float_SUITE.erl
@@ -20,7 +20,8 @@
 -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]).
 
 -include_lib("common_test/include/ct.hrl").
 
@@ -28,7 +29,7 @@ suite() -> [{ct_hooks,[ts_install_cth]}].
 
 all() -> 
     [pending, bif_calls, math_functions,
-     mixed_float_and_int].
+     mixed_float_and_int, subtract_number_type].
 
 groups() -> 
     [].
@@ -176,5 +177,15 @@ 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).
+
 id(I) -> I.
 
diff --git a/lib/compiler/test/guard_SUITE.erl b/lib/compiler/test/guard_SUITE.erl
index 1c05129dc4..ed0a56f064 100644
--- a/lib/compiler/test/guard_SUITE.erl
+++ b/lib/compiler/test/guard_SUITE.erl
@@ -1295,6 +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).
@@ -1328,6 +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;
@@ -1371,6 +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) ->
@@ -1471,6 +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;
@@ -1525,6 +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
diff --git a/lib/compiler/test/inline_SUITE.erl b/lib/compiler/test/inline_SUITE.erl
index 69c9dcba69..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) ->
@@ -89,7 +85,6 @@ 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),
@@ -100,7 +95,7 @@ try_inline(Mod, Config) ->
                                   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]),
@@ -109,7 +104,7 @@ try_inline(Mod, Config) ->
 
     %% 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),
@@ -122,7 +117,7 @@ try_inline(Mod, Config) ->
 
     %% 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),
@@ -131,6 +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;
@@ -144,12 +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),
@@ -350,10 +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,ssalint]),
-    {ok,Mod,_} = compile:file(Src, [binary,report,{inline,20},
-				    verbose,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 eed2a31f70..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) ->
@@ -390,6 +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) ->
@@ -402,6 +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]),
@@ -641,13 +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
@@ -660,6 +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),
@@ -804,5 +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 2a6303ece8..a0b415ceaa 100644
--- a/lib/compiler/test/misc_SUITE.erl
+++ b/lib/compiler/test/misc_SUITE.erl
@@ -161,14 +161,13 @@ 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),
 
     %% beam_kernel_to_ssa
@@ -185,7 +184,6 @@ silly_coverage(Config) when is_list(Config) ->
     %% beam_ssa_recv
     %% beam_ssa_share
     %% beam_ssa_pre_codegen
-    %% beam_ssa_opt
     %% beam_ssa_codegen
     BadSSA = {b_module,#{},a,b,c,
               [{b_function,#{func_info=>{mod,foo,0}},args,bad_blocks,0}]},
@@ -193,9 +191,15 @@ silly_coverage(Config) when is_list(Config) ->
     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_opt: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)) ||
@@ -223,10 +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_except
     ExceptInput = {?MODULE,[{foo,0}],[],
 		   [{function,foo,0,2,
diff --git a/lib/compiler/test/receive_SUITE.erl b/lib/compiler/test/receive_SUITE.erl
index 4219768d6f..12108445f0 100644
--- a/lib/compiler/test/receive_SUITE.erl
+++ b/lib/compiler/test/receive_SUITE.erl
@@ -25,7 +25,7 @@
 	 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]).
 
 -include_lib("common_test/include/ct.hrl").
 
@@ -45,7 +45,7 @@ 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]}].
 
 
 init_per_suite(Config) ->
@@ -378,4 +378,27 @@ 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.
+
+
 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 4502f5b68a..39c26c6142 100644
--- a/lib/compiler/test/test_lib.erl
+++ b/lib/compiler/test/test_lib.erl
@@ -50,12 +50,8 @@ 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.
@@ -70,19 +66,24 @@ 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_ssa_opt) -> true;
-                    (no_recv_opt) -> true;
-		    (no_ssa_float) -> true;
-		    (no_stack_trimming) -> true;
-		    (debug_info) -> true;
-		    (inline) -> true;
-                    (no_put_tuple2) -> true;
-                    (no_bsm3) -> true;
-                    (no_bsm_opt) -> 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.
@@ -93,18 +94,22 @@ get_data_dir(Config) ->
     Opts = [{return,list}],
     Data1 = re:replace(Data0, "_no_opt_SUITE", "_SUITE", Opts),
     Data2 = re:replace(Data1, "_post_opt_SUITE", "_SUITE", Opts),
-    Data = re:replace(Data2, "_inline_SUITE", "_SUITE", Opts),
-    re:replace(Data, "_r21_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("21_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.
 
@@ -113,18 +118,7 @@ is_cloned_mod_1([]) -> false.
 
 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 1b7ef4ddb0..8f9cd9ab1e 100644
--- a/lib/compiler/test/trycatch_SUITE.erl
+++ b/lib/compiler/test/trycatch_SUITE.erl
@@ -1189,7 +1189,8 @@ bad_raise(Expr) ->
 test_raise(Expr) ->
     test_raise_1(Expr),
     test_raise_2(Expr),
-    test_raise_3(Expr).
+    test_raise_3(Expr),
+    test_raise_4(Expr).
 
 test_raise_1(Expr) ->
     erase(exception),
@@ -1263,5 +1264,28 @@ do_test_raise_3(Expr) ->
             erlang:raise(exit, {exception,C,E}, Stk)
     end.
 
+test_raise_4(Expr) ->
+    try
+        do_test_raise_4(Expr)
+    catch
+        exit:{exception,C,E,Stk}:Stk ->
+            try
+                Expr()
+            catch
+                C:E:S ->
+                    [StkTop|_] = S,
+                    [StkTop|_] = Stk
+            end
+    end.
+
+do_test_raise_4(Expr) ->
+    try
+        Expr()
+    catch
+        C:E:Stk ->
+            %% Here the stacktrace must be built.
+            erlang:raise(exit, {exception,C,E,Stk}, Stk)
+    end.
+
 
 id(I) -> I.
diff --git a/lib/compiler/test/warnings_SUITE.erl b/lib/compiler/test/warnings_SUITE.erl
index 1f39348998..c5d0bf8420 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),
@@ -970,6 +971,20 @@ 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.
 %%%
diff --git a/lib/compiler/vsn.mk b/lib/compiler/vsn.mk
index 92f8aec424..efedb414ad 100644
--- a/lib/compiler/vsn.mk
+++ b/lib/compiler/vsn.mk
@@ -1 +1 @@
-COMPILER_VSN = 7.2.7
+COMPILER_VSN = 7.3.1
diff --git a/lib/crypto/c_src/Makefile.in b/lib/crypto/c_src/Makefile.in
index cd0e5442e9..508e1c40ee 100644
--- a/lib/crypto/c_src/Makefile.in
+++ b/lib/crypto/c_src/Makefile.in
@@ -71,7 +71,35 @@ PRIVDIR = ../priv
 OBJDIR = $(PRIVDIR)/obj/$(TARGET)
 LIBDIR = $(PRIVDIR)/lib/$(TARGET)
 
-CRYPTO_OBJS = $(OBJDIR)/crypto$(TYPEMARKER).o
+CRYPTO_OBJS = $(OBJDIR)/crypto$(TYPEMARKER).o \
+	$(OBJDIR)/aead$(TYPEMARKER).o \
+	$(OBJDIR)/aes$(TYPEMARKER).o \
+	$(OBJDIR)/algorithms$(TYPEMARKER).o \
+	$(OBJDIR)/atoms$(TYPEMARKER).o \
+	$(OBJDIR)/block$(TYPEMARKER).o \
+	$(OBJDIR)/bn$(TYPEMARKER).o \
+	$(OBJDIR)/chacha20$(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 \
+	$(OBJDIR)/rc4$(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\
@@ -172,24 +200,21 @@ $(LIBDIR)/crypto_callback$(TYPEMARKER).dll: $(CALLBACK_OBJS)
 endif
 
 
-clean:
-	rm -f $(LIBDIR)/crypto.@DED_EXT@
-	rm -f $(LIBDIR)/crypto.debug.@DED_EXT@
-	rm -f $(LIBDIR)/crypto.valgrind.@DED_EXT@
-	rm -f $(LIBDIR)/crypto_callback.@DED_EXT@
-	rm -f $(LIBDIR)/crypto_callback.debug.@DED_EXT@
-	rm -f $(LIBDIR)/crypto_callback.valgrind.@DED_EXT@
-	rm -f $(LIBDIR)/otp_test_engine.@DED_EXT@
-	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..c6f4cf52b1
--- /dev/null
+++ b/lib/crypto/c_src/aead.c
@@ -0,0 +1,351 @@
+/*
+ * %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"
+
+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 = NULL;
+    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, ret;
+    int len, ctx_ctrl_set_ivlen, ctx_ctrl_get_tag;
+
+    type = argv[0];
+
+    ASSERT(argc == 6);
+
+    if (!enif_is_atom(env, type))
+        goto bad_arg;
+    if (!enif_inspect_iolist_as_binary(env, argv[1], &key))
+        goto bad_arg;
+    if (!enif_inspect_binary(env, argv[2], &iv))
+        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_get_uint(env, argv[5], &tag_len))
+        goto bad_arg;
+
+    if (tag_len > INT_MAX
+        || iv.size > INT_MAX
+        || in.size > INT_MAX
+        || aad.size > INT_MAX)
+        goto bad_arg;
+
+    /* Use cipher_type some day.  Must check block_encrypt|decrypt first */
+#if defined(HAVE_GCM)
+    if (type == atom_aes_gcm) {
+        if (iv.size == 0)
+            goto bad_arg;
+        if (tag_len < 1 || tag_len > 16)
+            goto bad_arg;
+
+        ctx_ctrl_set_ivlen = EVP_CTRL_GCM_SET_IVLEN;
+        ctx_ctrl_get_tag = EVP_CTRL_GCM_GET_TAG;
+
+        switch (key.size) {
+        case 16:
+            cipher = EVP_aes_128_gcm();
+            break;
+        case 24:
+            cipher = EVP_aes_192_gcm();
+            break;
+        case 32:
+            cipher = EVP_aes_256_gcm();
+            break;
+        default:
+            goto bad_arg;
+        }
+    } else
+#endif
+#if defined(HAVE_CCM)
+    if (type == atom_aes_ccm) {
+        if (iv.size < 7 || iv.size > 13)
+            goto bad_arg;
+        if (tag_len < 4 || tag_len > 16)
+            goto bad_arg;
+        if ((tag_len & 1) != 0)
+            goto bad_arg;
+
+        ctx_ctrl_set_ivlen = EVP_CTRL_CCM_SET_IVLEN;
+        ctx_ctrl_get_tag = EVP_CTRL_CCM_GET_TAG;
+
+        switch (key.size) {
+        case 16:
+            cipher = EVP_aes_128_ccm();
+            break;
+        case 24:
+            cipher = EVP_aes_192_ccm();
+            break;
+        case 32:
+            cipher = EVP_aes_256_ccm();
+            break;
+        default:
+            goto bad_arg;
+        }
+    } else
+#endif
+#if defined(HAVE_CHACHA20_POLY1305)
+    if (type == atom_chacha20_poly1305) {
+        if (key.size != 32)
+            goto bad_arg;
+        if (iv.size < 1 || iv.size > 16)
+            goto bad_arg;
+        if (tag_len != 16)
+            goto bad_arg;
+
+        ctx_ctrl_set_ivlen = EVP_CTRL_AEAD_SET_IVLEN;
+        ctx_ctrl_get_tag = EVP_CTRL_AEAD_GET_TAG;
+
+        cipher = EVP_chacha20_poly1305();
+
+    } else
+#endif
+        return enif_raise_exception(env, atom_notsup);
+ 
+    if ((ctx = EVP_CIPHER_CTX_new()) == NULL)
+        goto err;
+
+    if (EVP_EncryptInit_ex(ctx, cipher, NULL, NULL, NULL) != 1)
+        goto err;
+    if (EVP_CIPHER_CTX_ctrl(ctx, ctx_ctrl_set_ivlen, (int)iv.size, NULL) != 1)
+        goto err;
+
+#if defined(HAVE_CCM)
+    if (type == atom_aes_ccm) {
+        if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_CCM_SET_TAG, (int)tag_len, NULL) != 1)
+            goto err;
+        if (EVP_EncryptInit_ex(ctx, NULL, NULL, key.data, iv.data) != 1)
+            goto err;
+        if (EVP_EncryptUpdate(ctx, NULL, &len, NULL, (int)in.size) != 1)
+            goto err;
+    } else
+#endif
+    {
+        if (EVP_EncryptInit_ex(ctx, NULL, NULL, key.data, iv.data) != 1)
+            goto err;
+    }
+
+    if (EVP_EncryptUpdate(ctx, NULL, &len, aad.data, (int)aad.size) != 1)
+        goto err;
+
+    if ((outp = enif_make_new_binary(env, in.size, &out)) == NULL)
+        goto err;
+
+    if (EVP_EncryptUpdate(ctx, outp, &len, in.data, (int)in.size) != 1)
+        goto err;
+    if (EVP_EncryptFinal_ex(ctx, outp/*+len*/, &len) != 1)
+        goto err;
+
+    if ((tagp = enif_make_new_binary(env, tag_len, &out_tag)) == NULL)
+        goto err;
+
+    if (EVP_CIPHER_CTX_ctrl(ctx, ctx_ctrl_get_tag, (int)tag_len, tagp) != 1)
+        goto err;
+
+    CONSUME_REDS(env, in);
+    ret = enif_make_tuple2(env, out, out_tag);
+    goto done;
+
+ bad_arg:
+    ret = enif_make_badarg(env);
+    goto done;
+
+ err:
+    ret = atom_error;
+
+ done:
+    if (ctx)
+        EVP_CIPHER_CTX_free(ctx);
+    return ret;
+
+#else
+    return enif_raise_exception(env, atom_notsup);
+#endif
+}
+
+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 = NULL;
+    const EVP_CIPHER *cipher = NULL;
+    ErlNifBinary key, iv, aad, in, tag;
+    unsigned char *outp;
+    ERL_NIF_TERM type, out, ret;
+    int len, ctx_ctrl_set_ivlen, ctx_ctrl_set_tag;
+
+    ASSERT(argc == 6);
+
+    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))
+        goto bad_arg;
+    if (!enif_inspect_iolist_as_binary(env, argv[1], &key))
+        goto bad_arg;
+    if (!enif_inspect_binary(env, argv[2], &iv))
+        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;
+
+    if (tag.size > INT_MAX
+        || key.size > INT_MAX
+        || iv.size > INT_MAX
+        || in.size > INT_MAX
+        || aad.size > INT_MAX)
+        goto bad_arg;
+
+    /* Use cipher_type some day.  Must check block_encrypt|decrypt first */
+#if defined(HAVE_GCM)
+    if (type == atom_aes_gcm) {
+        if (iv.size == 0)
+            goto bad_arg;
+
+        ctx_ctrl_set_ivlen = EVP_CTRL_GCM_SET_IVLEN;
+        ctx_ctrl_set_tag = EVP_CTRL_GCM_SET_TAG;
+
+        switch (key.size) {
+        case 16:
+            cipher = EVP_aes_128_gcm();
+            break;
+        case 24:
+            cipher = EVP_aes_192_gcm();
+            break;
+        case 32:
+            cipher = EVP_aes_256_gcm();
+            break;
+        default:
+            goto bad_arg;
+        }
+    } else
+#endif
+#if defined(HAVE_CCM)
+    if (type == atom_aes_ccm) {
+        if (iv.size == 0)
+            goto bad_arg;
+
+        ctx_ctrl_set_ivlen = EVP_CTRL_CCM_SET_IVLEN;
+        ctx_ctrl_set_tag = EVP_CTRL_CCM_SET_TAG;
+
+        switch (key.size) {
+        case 16:
+            cipher = EVP_aes_128_ccm();
+            break;
+        case 24:
+            cipher = EVP_aes_192_ccm();
+            break;
+        case 32:
+            cipher = EVP_aes_256_ccm();
+            break;
+        default:
+            goto bad_arg;
+        }
+    } else
+#endif
+#if defined(HAVE_CHACHA20_POLY1305)
+    if (type == atom_chacha20_poly1305) {
+        if (key.size != 32)
+            goto bad_arg;
+        if (iv.size < 1 || iv.size > 16)
+            goto bad_arg;
+        if (tag.size != 16)
+            goto bad_arg;
+
+        ctx_ctrl_set_ivlen = EVP_CTRL_AEAD_SET_IVLEN;
+        ctx_ctrl_set_tag = EVP_CTRL_AEAD_SET_TAG;
+
+        cipher = EVP_chacha20_poly1305();
+    } else
+#endif
+        return enif_raise_exception(env, atom_notsup);
+
+    if ((outp = enif_make_new_binary(env, in.size, &out)) == NULL)
+        goto err;
+
+    if ((ctx = EVP_CIPHER_CTX_new()) == NULL)
+        goto err;
+    if (EVP_DecryptInit_ex(ctx, cipher, NULL, NULL, NULL) != 1)
+        goto err;
+    if (EVP_CIPHER_CTX_ctrl(ctx,  ctx_ctrl_set_ivlen, (int)iv.size, NULL) != 1)
+        goto err;
+
+#if defined(HAVE_CCM)
+    if (type == atom_aes_ccm) {
+        if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_CCM_SET_TAG, (int)tag.size, tag.data) != 1)
+            goto err;
+    }
+#endif
+
+    if (EVP_DecryptInit_ex(ctx, NULL, NULL, key.data, iv.data) != 1)
+        goto err;
+
+#if defined(HAVE_CCM)
+    if (type == atom_aes_ccm) {
+        if (EVP_DecryptUpdate(ctx, NULL, &len, NULL, (int)in.size) != 1)
+            goto err;
+    }
+#endif
+
+    if (EVP_DecryptUpdate(ctx, NULL, &len, aad.data, (int)aad.size) != 1)
+        goto err;
+    if (EVP_DecryptUpdate(ctx, outp, &len, in.data, (int)in.size) != 1)
+        goto err;
+
+#if defined(HAVE_GCM) || defined(HAVE_CHACHA20_POLY1305)
+    if (type == atom_aes_gcm) {
+        if (EVP_CIPHER_CTX_ctrl(ctx, ctx_ctrl_set_tag, (int)tag.size, tag.data) != 1)
+             goto err;
+        if (EVP_DecryptFinal_ex(ctx, outp+len, &len) != 1)
+            goto err;
+    }
+#endif
+    CONSUME_REDS(env, in);
+    ret = out;
+    goto done;
+
+ bad_arg:
+    ret = enif_make_badarg(env);
+    goto done;
+
+ err:
+    ret = atom_error;
+
+ done:
+    if (ctx)
+        EVP_CIPHER_CTX_free(ctx);
+    return ret;
+
+#else
+    return enif_raise_exception(env, atom_notsup);
+#endif
+}
diff --git a/lib/crypto/c_src/aead.h b/lib/crypto/c_src/aead.h
new file mode 100644
index 0000000000..54c0711535
--- /dev/null
+++ b/lib/crypto/c_src/aead.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_AEAD_H__
+#define E_AEAD_H__ 1
+
+#include "common.h"
+
+ERL_NIF_TERM aead_encrypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM aead_decrypt(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..2f30ec8a58
--- /dev/null
+++ b/lib/crypto/c_src/aes.c
@@ -0,0 +1,443 @@
+/*
+ * %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
+}
+
+
+/* Initializes state for ctr streaming (de)encryption
+*/
+#ifdef HAVE_EVP_AES_CTR
+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 = NULL;
+    const EVP_CIPHER *cipher;
+    ERL_NIF_TERM     ret;
+
+    ASSERT(argc == 2);
+
+    if (!enif_inspect_iolist_as_binary(env, argv[0], &key_bin))
+        goto bad_arg;
+    if (!enif_inspect_binary(env, argv[1], &ivec_bin))
+        goto bad_arg;
+    if (ivec_bin.size != 16)
+        goto bad_arg;
+
+    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:
+        goto bad_arg;
+    }
+
+    if ((ctx = enif_alloc_resource(evp_cipher_ctx_rtype, sizeof(struct evp_cipher_ctx))) == NULL)
+        goto err;
+    if ((ctx->ctx = EVP_CIPHER_CTX_new()) == NULL)
+        goto err;
+
+    if (EVP_CipherInit_ex(ctx->ctx, cipher, NULL,
+                          key_bin.data, ivec_bin.data, 1) != 1)
+        goto err;
+
+    if (EVP_CIPHER_CTX_set_padding(ctx->ctx, 0) != 1)
+        goto err;
+
+    ret = enif_make_resource(env, ctx);
+    goto done;
+
+ bad_arg:
+    return enif_make_badarg(env);
+
+ err:
+    ret = enif_make_badarg(env);
+
+ done:
+    if (ctx)
+        enif_release_resource(ctx);
+    return ret;
+}
+
+ERL_NIF_TERM aes_ctr_stream_encrypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Context, Data) */
+    struct evp_cipher_ctx *ctx = NULL, *new_ctx = NULL;
+    ErlNifBinary   data_bin;
+    ERL_NIF_TERM   ret, cipher_term;
+    unsigned char  *out;
+    int            outl = 0;
+
+    ASSERT(argc == 2);
+
+    if (!enif_get_resource(env, argv[0], evp_cipher_ctx_rtype, (void**)&ctx))
+        goto bad_arg;
+    if (!enif_inspect_iolist_as_binary(env, argv[1], &data_bin))
+        goto bad_arg;
+    if (data_bin.size > INT_MAX)
+        goto bad_arg;
+
+    if ((new_ctx = enif_alloc_resource(evp_cipher_ctx_rtype, sizeof(struct evp_cipher_ctx))) == NULL)
+        goto err;
+    if ((new_ctx->ctx = EVP_CIPHER_CTX_new()) == NULL)
+        goto err;
+
+    if (EVP_CIPHER_CTX_copy(new_ctx->ctx, ctx->ctx) != 1)
+        goto err;
+
+    if ((out = enif_make_new_binary(env, data_bin.size, &cipher_term)) == NULL)
+        goto err;
+
+    if (EVP_CipherUpdate(new_ctx->ctx, out, &outl, data_bin.data, (int)data_bin.size) != 1)
+        goto err;
+    ASSERT(outl >= 0 && (size_t)outl == data_bin.size);
+
+    ret = enif_make_tuple2(env, enif_make_resource(env, new_ctx), cipher_term);
+    CONSUME_REDS(env,data_bin);
+    goto done;
+
+ bad_arg:
+    return enif_make_badarg(env);
+
+ err:
+    ret = enif_make_badarg(env);
+
+ done:
+    if (new_ctx)
+        enif_release_resource(new_ctx);
+    return ret;
+}
+
+#else /* if not HAVE_EVP_AES_CTR */
+
+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;
+    unsigned char *outp;
+
+    ASSERT(argc == 2);
+
+    if (!enif_inspect_iolist_as_binary(env, argv[0], &key_bin))
+        goto bad_arg;
+    if (key_bin.size != 16 && key_bin.size != 24 && key_bin.size != 32)
+        goto bad_arg;
+    if (!enif_inspect_binary(env, argv[1], &ivec_bin))
+        goto bad_arg;
+    if (ivec_bin.size != 16)
+        goto bad_arg;
+
+    if ((outp = enif_make_new_binary(env, AES_BLOCK_SIZE, &ecount_bin)) == NULL)
+        goto err;
+
+    memset(outp, 0, AES_BLOCK_SIZE);
+
+    return enif_make_tuple4(env, argv[0], argv[1], ecount_bin, enif_make_int(env, 0));
+
+ bad_arg:
+ err:
+    return enif_make_badarg(env);
+}
+
+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;
+    unsigned char *outp;
+
+    ASSERT(argc == 2);
+
+    if (!enif_get_tuple(env, argv[0], &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, argv[1], &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..09c984f84a
--- /dev/null
+++ b/lib/crypto/c_src/aes.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_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[]);
+ERL_NIF_TERM aes_ctr_stream_init(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM aes_ctr_stream_encrypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+
+#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..a5bf248ea0
--- /dev/null
+++ b/lib/crypto/c_src/algorithms.c
@@ -0,0 +1,326 @@
+/*
+ * %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"
+
+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_cipher_cnt, algo_cipher_fips_cnt;
+static ERL_NIF_TERM algo_cipher[25]; /* 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;
+    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));
+}
+
+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 cipher_cnt = fips_mode ? algo_cipher_fips_cnt : algo_cipher_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 cipher_cnt = algo_cipher_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),
+			    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)
+                            );
+}
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/atoms.c b/lib/crypto/c_src/atoms.c
new file mode 100644
index 0000000000..5f19327197
--- /dev/null
+++ b/lib/crypto/c_src/atoms.c
@@ -0,0 +1,280 @@
+/*
+ * %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_not_prime;
+ERL_NIF_TERM atom_not_strong_prime;
+ERL_NIF_TERM atom_unable_to_check_generator;
+ERL_NIF_TERM atom_not_suitable_generator;
+ERL_NIF_TERM atom_check_failed;
+ERL_NIF_TERM atom_unknown;
+ERL_NIF_TERM atom_none;
+ERL_NIF_TERM atom_notsup;
+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
+
+#if defined(HAVE_EC)
+ERL_NIF_TERM atom_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
+#ifdef HAVE_CHACHA20_POLY1305
+ERL_NIF_TERM atom_chacha20_poly1305;
+#endif
+#ifdef HAVE_ECB_IVEC_BUG
+ERL_NIF_TERM atom_aes_ecb;
+ERL_NIF_TERM atom_des_ecb;
+ERL_NIF_TERM atom_blowfish_ecb;
+#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;
+ERL_NIF_TERM atom_sha224;
+ERL_NIF_TERM atom_sha256;
+ERL_NIF_TERM atom_sha384;
+ERL_NIF_TERM atom_sha512;
+ERL_NIF_TERM atom_sha3_224;
+ERL_NIF_TERM atom_sha3_256;
+ERL_NIF_TERM atom_sha3_384;
+ERL_NIF_TERM atom_sha3_512;
+ERL_NIF_TERM atom_md5;
+ERL_NIF_TERM atom_ripemd160;
+
+#ifdef HAVE_BLAKE2
+ERL_NIF_TERM atom_blake2b;
+ERL_NIF_TERM atom_blake2s;
+#endif
+
+#ifdef HAS_ENGINE_SUPPORT
+ERL_NIF_TERM atom_bad_engine_method;
+ERL_NIF_TERM atom_bad_engine_id;
+ERL_NIF_TERM atom_ctrl_cmd_failed;
+ERL_NIF_TERM atom_engine_init_failed;
+ERL_NIF_TERM atom_register_engine_failed;
+ERL_NIF_TERM atom_add_engine_failed;
+ERL_NIF_TERM atom_remove_engine_failed;
+ERL_NIF_TERM atom_engine_method_not_supported;
+
+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_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 HAVE_BLAKE2
+    atom_blake2b = enif_make_atom(env,"blake2b");
+    atom_blake2s = enif_make_atom(env,"blake2s");
+#endif
+
+#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
+
+    return 1;
+}
diff --git a/lib/crypto/c_src/atoms.h b/lib/crypto/c_src/atoms.h
new file mode 100644
index 0000000000..32f5ec856c
--- /dev/null
+++ b/lib/crypto/c_src/atoms.h
@@ -0,0 +1,151 @@
+/*
+ * %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_not_prime;
+extern ERL_NIF_TERM atom_not_strong_prime;
+extern ERL_NIF_TERM atom_unable_to_check_generator;
+extern ERL_NIF_TERM atom_not_suitable_generator;
+extern ERL_NIF_TERM atom_check_failed;
+extern ERL_NIF_TERM atom_unknown;
+extern ERL_NIF_TERM atom_none;
+extern ERL_NIF_TERM atom_notsup;
+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
+
+#if defined(HAVE_EC)
+extern ERL_NIF_TERM atom_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
+#ifdef HAVE_CHACHA20_POLY1305
+extern ERL_NIF_TERM atom_chacha20_poly1305;
+#endif
+#ifdef HAVE_ECB_IVEC_BUG
+extern ERL_NIF_TERM atom_aes_ecb;
+extern ERL_NIF_TERM atom_des_ecb;
+extern ERL_NIF_TERM atom_blowfish_ecb;
+#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;
+extern ERL_NIF_TERM atom_sha224;
+extern ERL_NIF_TERM atom_sha256;
+extern ERL_NIF_TERM atom_sha384;
+extern ERL_NIF_TERM atom_sha512;
+extern ERL_NIF_TERM atom_sha3_224;
+extern ERL_NIF_TERM atom_sha3_256;
+extern ERL_NIF_TERM atom_sha3_384;
+extern ERL_NIF_TERM atom_sha3_512;
+extern ERL_NIF_TERM atom_md5;
+extern ERL_NIF_TERM atom_ripemd160;
+#ifdef HAVE_BLAKE2
+extern ERL_NIF_TERM atom_blake2b;
+extern ERL_NIF_TERM atom_blake2s;
+#endif
+
+#ifdef HAS_ENGINE_SUPPORT
+extern ERL_NIF_TERM atom_bad_engine_method;
+extern ERL_NIF_TERM atom_bad_engine_id;
+extern ERL_NIF_TERM atom_ctrl_cmd_failed;
+extern ERL_NIF_TERM atom_engine_init_failed;
+extern ERL_NIF_TERM atom_register_engine_failed;
+extern ERL_NIF_TERM atom_add_engine_failed;
+extern ERL_NIF_TERM atom_remove_engine_failed;
+extern ERL_NIF_TERM atom_engine_method_not_supported;
+
+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/block.c b/lib/crypto/c_src/block.c
new file mode 100644
index 0000000000..d88ee8dba7
--- /dev/null
+++ b/lib/crypto/c_src/block.c
@@ -0,0 +1,143 @@
+/*
+ * %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 "block.h"
+#include "aes.h"
+#include "cipher.h"
+
+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 = NULL;
+    ERL_NIF_TERM         ret;
+    unsigned char        *out;
+    int                  ivec_size, out_size = 0;
+    int                  cipher_len;
+
+    ASSERT(argc == 4 || argc == 5);
+
+    if (!enif_inspect_iolist_as_binary(env, argv[1], &key))
+        goto bad_arg;
+    if (key.size > INT_MAX)
+        goto bad_arg;
+    if ((cipherp = get_cipher_type(argv[0], key.size)) == NULL)
+        goto bad_arg;
+    if (!enif_inspect_iolist_as_binary(env, argv[argc - 2], &text))
+        goto bad_arg;
+    if (text.size > INT_MAX)
+        goto bad_arg;
+
+    if ((cipher = cipherp->cipher.p) == NULL)
+        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 (ivec_size < 0)
+        goto bad_arg;
+
+    if ((cipher_len = EVP_CIPHER_block_size(cipher)) < 0)
+        goto bad_arg;
+    if (text.size % (size_t)cipher_len != 0)
+        goto bad_arg;
+
+    if (ivec_size == 0) {
+        if (argc != 4)
+            goto bad_arg;
+    } else {
+        if (argc != 5)
+            goto bad_arg;
+        if (!enif_inspect_iolist_as_binary(env, argv[2], &ivec))
+            goto bad_arg;
+        if (ivec.size != (size_t)ivec_size)
+            goto bad_arg;
+    }
+
+    if ((out = enif_make_new_binary(env, text.size, &ret)) == NULL)
+        goto err;
+    if ((ctx = EVP_CIPHER_CTX_new()) == NULL)
+        goto err;
+
+    if (!EVP_CipherInit_ex(ctx, cipher, NULL, NULL, NULL,
+                           (argv[argc - 1] == atom_true)))
+        goto err;
+    if (!EVP_CIPHER_CTX_set_key_length(ctx, (int)key.size))
+        goto err;
+
+    if (EVP_CIPHER_type(cipher) == NID_rc2_cbc) {
+        if (key.size > INT_MAX / 8)
+            goto err;
+        if (!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_SET_RC2_KEY_BITS, (int)key.size * 8, NULL))
+            goto err;
+    }
+
+    if (!EVP_CipherInit_ex(ctx, NULL, NULL, key.data,
+                           ivec_size ? ivec.data : NULL, -1))
+        goto err;
+    if (!EVP_CIPHER_CTX_set_padding(ctx, 0))
+        goto err;
+
+    /* OpenSSL 0.9.8h asserts text.size > 0 */
+    if (text.size > 0) {
+        if (!EVP_CipherUpdate(ctx, out, &out_size, text.data, (int)text.size))
+            goto err;
+        if (ASSERT(out_size == text.size), 0)
+            goto err;
+        if (!EVP_CipherFinal_ex(ctx, out + out_size, &out_size))
+            goto err;
+    }
+
+    ASSERT(out_size == 0);
+    CONSUME_REDS(env, text);
+    goto done;
+
+ bad_arg:
+    ret = enif_make_badarg(env);
+    goto done;
+
+ err:
+    ret = enif_raise_exception(env, atom_notsup);
+
+ done:
+    if (ctx)
+        EVP_CIPHER_CTX_free(ctx);
+    return ret;
+}
diff --git a/lib/crypto/c_src/block.h b/lib/crypto/c_src/block.h
new file mode 100644
index 0000000000..cc5e78ce12
--- /dev/null
+++ b/lib/crypto/c_src/block.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_BLOCK_H__
+#define E_BLOCK_H__ 1
+
+#include "common.h"
+
+ERL_NIF_TERM block_crypt_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+
+#endif /* E_BLOCK_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/chacha20.c b/lib/crypto/c_src/chacha20.c
new file mode 100644
index 0000000000..cfcc395dca
--- /dev/null
+++ b/lib/crypto/c_src/chacha20.c
@@ -0,0 +1,124 @@
+/*
+ * %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 "chacha20.h"
+#include "cipher.h"
+
+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 = NULL;
+    const EVP_CIPHER *cipher;
+    ERL_NIF_TERM     ret;
+
+    ASSERT(argc == 2);
+
+    if (!enif_inspect_iolist_as_binary(env, argv[0], &key_bin))
+        goto bad_arg;
+    if (key_bin.size != 32)
+        goto bad_arg;
+    if (!enif_inspect_binary(env, argv[1], &ivec_bin))
+        goto bad_arg;
+    if (ivec_bin.size != 16)
+        goto bad_arg;
+
+    cipher = EVP_chacha20();
+
+    if ((ctx = enif_alloc_resource(evp_cipher_ctx_rtype, sizeof(struct evp_cipher_ctx))) == NULL)
+        goto err;
+    if ((ctx->ctx = EVP_CIPHER_CTX_new()) == NULL)
+        goto err;
+
+    if (EVP_CipherInit_ex(ctx->ctx, cipher, NULL,
+                          key_bin.data, ivec_bin.data, 1) != 1)
+        goto err;
+    if (EVP_CIPHER_CTX_set_padding(ctx->ctx, 0) != 1)
+        goto err;
+
+    ret = enif_make_resource(env, ctx);
+    goto done;
+
+ bad_arg:
+    return enif_make_badarg(env);
+
+ err:
+    ret = enif_make_badarg(env);
+
+ done:
+    if (ctx)
+        enif_release_resource(ctx);
+    return ret;
+
+#else
+    return enif_raise_exception(env, atom_notsup);
+#endif
+}
+
+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 = NULL, *new_ctx = NULL;
+    ErlNifBinary   data_bin;
+    ERL_NIF_TERM   ret, cipher_term;
+    unsigned char  *out;
+    int            outl = 0;
+
+    ASSERT(argc == 2);
+
+    if (!enif_get_resource(env, argv[0], evp_cipher_ctx_rtype, (void**)&ctx))
+        goto bad_arg;
+    if (!enif_inspect_iolist_as_binary(env, argv[1], &data_bin))
+        goto bad_arg;
+    if (data_bin.size > INT_MAX)
+        goto bad_arg;
+
+    if ((new_ctx = enif_alloc_resource(evp_cipher_ctx_rtype, sizeof(struct evp_cipher_ctx))) == NULL)
+        goto err;
+    if ((new_ctx->ctx = EVP_CIPHER_CTX_new()) == NULL)
+        goto err;
+
+    if (EVP_CIPHER_CTX_copy(new_ctx->ctx, ctx->ctx) != 1)
+        goto err;
+    if ((out = enif_make_new_binary(env, data_bin.size, &cipher_term)) == NULL)
+        goto err;
+    if (EVP_CipherUpdate(new_ctx->ctx, out, &outl, data_bin.data, (int)data_bin.size) != 1)
+        goto err;
+    ASSERT(outl >= 0 && (size_t)outl == data_bin.size);
+
+    ret = enif_make_tuple2(env, enif_make_resource(env, new_ctx), cipher_term);
+    CONSUME_REDS(env, data_bin);
+    goto done;
+
+ bad_arg:
+    return enif_make_badarg(env);
+
+ err:
+    ret = enif_make_badarg(env);
+
+ done:
+    if (new_ctx)
+        enif_release_resource(new_ctx);
+    return ret;
+
+#else
+    return enif_raise_exception(env, atom_notsup);
+#endif
+}
diff --git a/lib/crypto/c_src/chacha20.h b/lib/crypto/c_src/chacha20.h
new file mode 100644
index 0000000000..7e2ccae2bb
--- /dev/null
+++ b/lib/crypto/c_src/chacha20.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_CHACHA20_H__
+#define E_CHACHA20_H__ 1
+
+#include "common.h"
+
+ERL_NIF_TERM chacha20_stream_init(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM chacha20_stream_crypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+
+#endif /* E_CHACHA20_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..449e636037
--- /dev/null
+++ b/lib/crypto/c_src/cipher.c
@@ -0,0 +1,125 @@
+/*
+ * %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[] =
+{
+    {{"rc2_cbc"},
+#ifndef OPENSSL_NO_RC2
+     {&EVP_rc2_cbc}
+#else
+     {NULL}
+#endif
+    ,0},
+    {{"des_cbc"}, {COND_NO_DES_PTR(&EVP_des_cbc)}, 0},
+    {{"des_cfb"}, {COND_NO_DES_PTR(&EVP_des_cfb8)}, 0},
+    {{"des_ecb"}, {COND_NO_DES_PTR(&EVP_des_ecb)}, 0},
+    {{"des_ede3_cbc"}, {COND_NO_DES_PTR(&EVP_des_ede3_cbc)}, 0},
+    {{"des_ede3_cbf"}, /* Misspelled, retained */
+#ifdef HAVE_DES_ede3_cfb_encrypt
+     {COND_NO_DES_PTR(&EVP_des_ede3_cfb8)}
+#else
+     {NULL}
+#endif
+     ,0},
+    {{"des_ede3_cfb"},
+#ifdef HAVE_DES_ede3_cfb_encrypt
+     {COND_NO_DES_PTR(&EVP_des_ede3_cfb8)}
+#else
+     {NULL}
+#endif
+     ,0},
+    {{"blowfish_cbc"}, {&EVP_bf_cbc}, 0},
+    {{"blowfish_cfb64"}, {&EVP_bf_cfb64}, 0},
+    {{"blowfish_ofb64"}, {&EVP_bf_ofb}, 0},
+    {{"blowfish_ecb"}, {&EVP_bf_ecb}, 0},
+    {{"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}, 0},
+    {{"aes_cbc256"}, {&EVP_aes_256_cbc}, 0},
+    {{"aes_cfb8"}, {&EVP_aes_128_cfb8}, 0},
+    {{"aes_cfb128"}, {&EVP_aes_128_cfb128}, 0},
+    {{"aes_ecb"}, {&EVP_aes_128_ecb}, 16},
+    {{"aes_ecb"}, {&EVP_aes_192_ecb}, 24},
+    {{"aes_ecb"}, {&EVP_aes_256_ecb}, 32},
+    {{NULL},{NULL},0}
+};
+
+#ifdef HAVE_EVP_AES_CTR
+ErlNifResourceType* evp_cipher_ctx_rtype;
+
+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);
+}
+#endif
+
+int init_cipher_ctx(ErlNifEnv *env) {
+#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 == NULL)
+        goto err;
+#endif
+
+    return 1;
+
+#ifdef HAVE_EVP_AES_CTR
+ err:
+    PRINTF_ERR0("CRYPTO: Could not open resource type 'EVP_CIPHER_CTX'");
+    return 0;
+#endif
+}
+
+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 */
+}
+
+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;
+}
diff --git a/lib/crypto/c_src/cipher.h b/lib/crypto/c_src/cipher.h
new file mode 100644
index 0000000000..3fb27f0ba3
--- /dev/null
+++ b/lib/crypto/c_src/cipher.h
@@ -0,0 +1,50 @@
+/*
+ * %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;
+    const size_t key_len;      /* != 0 to also match on key_len */
+};
+
+#ifdef HAVE_EVP_AES_CTR
+extern ErlNifResourceType* evp_cipher_ctx_rtype;
+struct evp_cipher_ctx {
+    EVP_CIPHER_CTX* ctx;
+};
+#endif
+
+int init_cipher_ctx(ErlNifEnv *env);
+
+void init_cipher_types(ErlNifEnv* env);
+struct cipher_type_t* get_cipher_type(ERL_NIF_TERM type, size_t key_len);
+
+#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..196b7476e3
--- /dev/null
+++ b/lib/crypto/c_src/cmac.c
@@ -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%
+ */
+
+#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)
+    struct cipher_type_t *cipherp = NULL;
+    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 (!enif_inspect_iolist_as_binary(env, argv[2], &data))
+        goto bad_arg;
+
+    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..2bc8bdd73c
--- /dev/null
+++ b/lib/crypto/c_src/common.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_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"
+
+#endif /* E_COMMON_H__ */
diff --git a/lib/crypto/c_src/crypto.c b/lib/crypto/c_src/crypto.c
index df607732bf..03f11c9059 100644
--- a/lib/crypto/c_src/crypto.c
+++ b/lib/crypto/c_src/crypto.c
@@ -23,982 +23,120 @@
  * 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 "block.h"
+#include "bn.h"
+#include "chacha20.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 "rc4.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_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},
+    {"block_crypt_nif", 5, block_crypt_nif, 0},
+    {"block_crypt_nif", 4, block_crypt_nif, 0},
+    {"aes_ige_crypt_nif", 4, aes_ige_crypt_nif, 0},
+    {"aes_ctr_stream_init", 2, aes_ctr_stream_init, 0},
+    {"aes_ctr_stream_encrypt", 2, aes_ctr_stream_encrypt, 0},
+    {"aes_ctr_stream_decrypt", 2, aes_ctr_stream_encrypt, 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},
+    {"rc4_set_key", 1, rc4_set_key, 0},
+    {"rc4_encrypt_with_state", 2, rc4_encrypt_with_state, 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_encrypt", 6, aead_encrypt, 0},
+    {"aead_decrypt", 6, aead_decrypt, 0},
+
+    {"chacha20_stream_init",    2, chacha20_stream_init, 0},
+    {"chacha20_stream_encrypt", 2, chacha20_stream_crypt, 0},
+    {"chacha20_stream_decrypt", 2, chacha20_stream_crypt, 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 +153,6 @@ 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 +166,37 @@ 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 +205,18 @@ 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 +236,10 @@ 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 +293,3 @@ 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..fec286c000
--- /dev/null
+++ b/lib/crypto/c_src/digest.c
@@ -0,0 +1,125 @@
+/*
+ * %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"}, {&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
+    },
+    {{"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..6692ccd734
--- /dev/null
+++ b/lib/crypto/c_src/engine.c
@@ -0,0 +1,839 @@
+/*
+ * %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;
+};
+
+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)
+        goto err;
+#endif
+
+    return 1;
+
+ err:
+    PRINTF_ERR0("CRYPTO: Could not open resource type 'ENGINE_CTX'");
+    return 0;
+}
+
+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 = enif_make_tuple2(env, atom_error, atom_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 enif_make_tuple2(env, atom_error, atom_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 = enif_make_tuple2(env, atom_error, atom_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 enif_make_tuple2(env, atom_error, atom_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 enif_make_tuple2(env, atom_error, atom_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 enif_make_tuple2(env, atom_error, atom_engine_method_not_supported);
+    }
+
+    return atom_ok;
+
+ bad_arg:
+    return enif_make_badarg(env);
+
+ failed:
+    return enif_make_tuple2(env, atom_error, atom_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..457e9d071a
--- /dev/null
+++ b/lib/crypto/c_src/hash.c
@@ -0,0 +1,499 @@
+/*
+ * %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"
+
+#define MD5_CTX_LEN       (sizeof(MD5_CTX))
+#define MD4_CTX_LEN       (sizeof(MD4_CTX))
+#define RIPEMD160_CTX_LEN (sizeof(RIPEMD160_CTX))
+
+#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_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))
+    {
+    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:
+        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))
+    {
+    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:
+        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))
+    {
+    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:
+        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..8bae07f39a
--- /dev/null
+++ b/lib/crypto/c_src/hash.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_HASH_H__
+#define E_HASH_H__ 1
+
+#include "common.h"
+
+int init_hash_ctx(ErlNifEnv *env);
+
+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..c41e50eb35
--- /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], 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], 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..45144a0c25
--- /dev/null
+++ b/lib/crypto/c_src/openssl_config.h
@@ -0,0 +1,354 @@
+/*
+ * %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
+# 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
+
+#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_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 2c8cce094e..fd26b7cb5d 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)
         && bcmp(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)
         && bcmp(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..4e76f817bc
--- /dev/null
+++ b/lib/crypto/c_src/pkey.c
@@ -0,0 +1,1444 @@
+/*
+ * %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;
+#ifdef HAVE_EDDSA
+    if (algorithm == atom_eddsa)
+        return PKEY_OK;
+#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_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_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_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) {
+#if defined(HAVE_EDDSA)
+        if (!get_eddsa_key(env, 0, key, &result))
+            goto err;
+#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) {
+#if defined(HAVE_EDDSA)
+        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);
+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);
+    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 ((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
+        goto bad_arg;
+#endif
+    } 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);
+
+    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 ((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
+        goto bad_arg;
+#endif
+    } 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..db3433dce3
--- /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 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/rc4.c b/lib/crypto/c_src/rc4.c
new file mode 100644
index 0000000000..e423661097
--- /dev/null
+++ b/lib/crypto/c_src/rc4.c
@@ -0,0 +1,92 @@
+/*
+ * %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 "rc4.h"
+
+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;
+    RC4_KEY *rc4_key;
+
+    CHECK_NO_FIPS_MODE();
+
+    ASSERT(argc == 1);
+
+    if (!enif_inspect_iolist_as_binary(env, argv[0], &key))
+        goto bad_arg;
+    if (key.size > INT_MAX)
+        goto bad_arg;
+
+    if ((rc4_key = (RC4_KEY*)enif_make_new_binary(env, sizeof(RC4_KEY), &ret)) == NULL)
+        goto err;
+
+    RC4_set_key(rc4_key, (int)key.size, key.data);
+    return ret;
+
+ bad_arg:
+ err:
+    return enif_make_badarg(env);
+
+#else
+    return enif_raise_exception(env, atom_notsup);
+#endif
+}
+
+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;
+    unsigned char *outp;
+
+    CHECK_NO_FIPS_MODE();
+
+    ASSERT(argc == 2);
+
+    if (!enif_inspect_iolist_as_binary(env, argv[0], &state))
+        goto bad_arg;
+    if (state.size != sizeof(RC4_KEY))
+        goto bad_arg;
+    if (!enif_inspect_iolist_as_binary(env, argv[1], &data))
+        goto bad_arg;
+
+    if ((rc4_key = (RC4_KEY*)enif_make_new_binary(env, sizeof(RC4_KEY), &new_state)) == NULL)
+        goto err;
+    if ((outp = enif_make_new_binary(env, data.size, &new_data)) == NULL)
+        goto err;
+
+    memcpy(rc4_key, state.data, sizeof(RC4_KEY));
+    RC4(rc4_key, data.size, data.data, outp);
+
+    CONSUME_REDS(env, data);
+    return enif_make_tuple2(env, new_state, new_data);
+
+ bad_arg:
+ err:
+    return enif_make_badarg(env);
+
+#else
+    return enif_raise_exception(env, atom_notsup);
+#endif
+}
+
diff --git a/lib/crypto/c_src/rc4.h b/lib/crypto/c_src/rc4.h
new file mode 100644
index 0000000000..28bf674253
--- /dev/null
+++ b/lib/crypto/c_src/rc4.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_RC4_H__
+#define E_RC4_H__ 1
+
+#include "common.h"
+
+ERL_NIF_TERM rc4_set_key(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM rc4_encrypt_with_state(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+
+#endif /* E_RC4_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/doc/src/crypto.xml b/lib/crypto/doc/src/crypto.xml
index 96fda34860..e0794a080e 100644
--- a/lib/crypto/doc/src/crypto.xml
+++ b/lib/crypto/doc/src/crypto.xml
@@ -22,7 +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.
@@ -44,6 +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>
@@ -235,6 +239,7 @@
       <name name="sha1"/>
       <name name="sha2"/>
       <name name="sha3"/>
+      <name name="blake2"/>
       <desc>
       </desc>
     </datatype>
@@ -523,7 +528,7 @@
   <!--================ 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>
@@ -536,7 +541,7 @@
     </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>
@@ -549,9 +554,9 @@
     </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</name>
+      <name since="OTP R16B01">block_encrypt(AeadType, Key, Ivec, {AAD, PlainText}) -> {CipherText, CipherTag}</name>
+      <name since="OTP R16B01">block_encrypt(aes_gcm | aes_ccm, Key, Ivec, {AAD, PlainText, TagLength}) -> {CipherText, CipherTag}</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>
@@ -576,8 +581,8 @@
     </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</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>
@@ -602,7 +607,7 @@
     </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.
@@ -611,7 +616,7 @@
     </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.
@@ -621,7 +626,7 @@
     </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>
@@ -630,8 +635,8 @@
 
 
     <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>.
@@ -652,7 +657,7 @@
     </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>
@@ -662,7 +667,7 @@
     </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
@@ -674,7 +679,7 @@
     </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>
@@ -686,7 +691,7 @@
     </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
@@ -697,8 +702,8 @@
     </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
@@ -708,7 +713,7 @@
     </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
@@ -718,7 +723,7 @@
     </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>
@@ -737,7 +742,7 @@
     </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
@@ -746,7 +751,7 @@
     </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
@@ -755,8 +760,8 @@
     </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
@@ -766,7 +771,7 @@
     </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
@@ -789,7 +794,7 @@
     </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
@@ -804,7 +809,7 @@
     </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>
@@ -825,7 +830,7 @@
     </func>
 
     <func>
-      <name name="mod_pow" arity="3"/>
+      <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>
@@ -833,8 +838,8 @@
     </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
@@ -846,7 +851,7 @@
     </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
@@ -855,7 +860,7 @@
     </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
@@ -869,7 +874,7 @@
     </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>
@@ -882,7 +887,7 @@
     </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
@@ -896,7 +901,7 @@
     </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>
@@ -908,7 +913,7 @@
     </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
@@ -921,7 +926,7 @@
     </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>
@@ -934,7 +939,7 @@
     </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>
@@ -942,7 +947,7 @@
     </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>
@@ -950,7 +955,7 @@
     </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
@@ -963,7 +968,7 @@
     </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>
@@ -991,7 +996,7 @@ _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>
@@ -1026,7 +1031,7 @@ _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>
@@ -1057,7 +1062,7 @@ _FloatValue = rand:uniform().     % [0.0; 1.0[</pre>
     </func>
 
     <func>
-      <name>rand_seed_alg(Alg, Seed) -> 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>
@@ -1085,7 +1090,7 @@ FloatValue = rand:uniform().     % again
     </func>
 
     <func>
-      <name>rand_seed_alg_s(Alg) -> rand:state()</name>
+      <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>
@@ -1149,7 +1154,7 @@ FloatValue = rand:uniform().     % again
     </func>
 
     <func>
-      <name>rand_seed_alg_s(Alg, Seed) -> rand:state()</name>
+      <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>
@@ -1215,7 +1220,7 @@ FloatValue = rand:uniform().     % again
     </func>
 
     <func>
-      <name name="stream_init" arity="2"/>
+      <name name="stream_init" arity="2" since="OTP R16B01"/>
       <fsummary></fsummary>
       <desc>
         <p>Initializes the state for use in RC4 stream encryption
@@ -1228,7 +1233,7 @@ FloatValue = rand:uniform().     % again
     </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).
@@ -1243,7 +1248,7 @@ FloatValue = rand:uniform().     % again
     </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.
@@ -1254,7 +1259,7 @@ FloatValue = rand:uniform().     % again
     </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.
@@ -1265,7 +1270,7 @@ FloatValue = rand:uniform().     % again
     </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
@@ -1277,7 +1282,7 @@ FloatValue = rand:uniform().     % again
     </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>
@@ -1285,7 +1290,7 @@ FloatValue = rand:uniform().     % again
     </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>
@@ -1293,8 +1298,8 @@ FloatValue = rand:uniform().     % again
     </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>
@@ -1308,8 +1313,8 @@ FloatValue = rand:uniform().     % again
     </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>
@@ -1325,7 +1330,7 @@ FloatValue = rand:uniform().     % again
 
     <!-- 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.
@@ -1335,7 +1340,7 @@ FloatValue = rand:uniform().     % again
     </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>
@@ -1353,7 +1358,7 @@ FloatValue = rand:uniform().     % again
     </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>
@@ -1375,7 +1380,7 @@ FloatValue = rand:uniform().     % again
     </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>
@@ -1395,7 +1400,7 @@ FloatValue = rand:uniform().     % again
     </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>
@@ -1415,7 +1420,7 @@ FloatValue = rand:uniform().     % again
     </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>
@@ -1435,7 +1440,7 @@ FloatValue = rand:uniform().     % again
     </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>
@@ -1452,7 +1457,7 @@ FloatValue = rand:uniform().     % again
     </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>
@@ -1473,7 +1478,7 @@ FloatValue = rand:uniform().     % again
     </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>
@@ -1486,7 +1491,7 @@ FloatValue = rand:uniform().     % again
     </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>
@@ -1499,7 +1504,7 @@ FloatValue = rand:uniform().     % again
     </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>
@@ -1512,7 +1517,7 @@ FloatValue = rand:uniform().     % again
     </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>
@@ -1525,7 +1530,7 @@ FloatValue = rand:uniform().     % again
     </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>
@@ -1545,7 +1550,7 @@ FloatValue = rand:uniform().     % again
     </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>
@@ -1567,7 +1572,7 @@ FloatValue = rand:uniform().     % again
     </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>
@@ -1590,7 +1595,7 @@ FloatValue = rand:uniform().     % again
     </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>
@@ -1613,7 +1618,7 @@ FloatValue = rand:uniform().     % again
     </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 b28606fb4e..f78bb81bba 100644
--- a/lib/crypto/doc/src/engine_keys.xml
+++ b/lib/crypto/doc/src/engine_keys.xml
@@ -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 d81a8ddd87..0a3f68ade2 100644
--- a/lib/crypto/doc/src/notes.xml
+++ b/lib/crypto/doc/src/notes.xml
@@ -31,6 +31,43 @@
   </header>
   <p>This document describes the changes made to the Crypto application.</p>
 
+<section><title>Crypto 4.4</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Updated the RSA options part in the crypto application's
+	    C-code, documentation and tests.</p>
+          <p>
+	    Own Id: OTP-15302</p>
+        </item>
+      </list>
+    </section>
+
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+          <p>
+	    Added ed25519 and ed448 sign/verify.</p>
+          <p>
+	    Requires OpenSSL 1.1.1 or higher as cryptolib under the
+	    OTP application <c>crypto</c>.</p>
+          <p>
+	    Own Id: OTP-15419 Aux Id: OTP-15094 </p>
+        </item>
+        <item>
+          <p>
+	    Fixed valgrind warnings.</p>
+          <p>
+	    Own Id: OTP-15467</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Crypto 4.3.3</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
diff --git a/lib/crypto/src/crypto.erl b/lib/crypto/src/crypto.erl
index 6836e30a1b..de8cfac9a2 100644
--- a/lib/crypto/src/crypto.erl
+++ b/lib/crypto/src/crypto.erl
@@ -287,6 +287,7 @@
 -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 .
 
@@ -329,11 +330,11 @@ stop() ->
                                       | {macs,    Macs}
                                       | {curves,  Curves}
                                       | {rsa_opts, RSAopts},
-                             Hashs :: [sha1() | sha2() | sha3() | ripemd160 | compatibility_only_hash()],
+                             Hashs :: [sha1() | sha2() | sha3() | blake2() | ripemd160 | compatibility_only_hash()],
                              Ciphers :: [stream_cipher()
                                          | block_cipher_with_iv() | block_cipher_without_iv()
                                          | aead_cipher()
-                                        ], 
+                                        ],
                              PKs :: [rsa | dss | ecdsa | dh | ecdh | ec_gf2m],
                              Macs :: [hmac | cmac | poly1305],
                              Curves :: [ec_named_curve() | edwards_curve_dh() | edwards_curve_ed()],
@@ -367,7 +368,7 @@ enable_fips_mode(_) -> ?nif_stub.
 %%%
 %%%================================================================
 
--define(HASH_HASH_ALGORITHM, sha1() | sha2() | sha3() | ripemd160 | compatibility_only_hash() ).
+-define(HASH_HASH_ALGORITHM, sha1() | sha2() | sha3() | blake2() | ripemd160 | compatibility_only_hash() ).
 
 -spec hash(Type, Data) -> Digest when Type :: ?HASH_HASH_ALGORITHM,
                                       Data :: iodata(),
@@ -914,7 +915,8 @@ 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
diff --git a/lib/crypto/test/Makefile b/lib/crypto/test/Makefile
index e046a25338..8b320e01a9 100644
--- a/lib/crypto/test/Makefile
+++ b/lib/crypto/test/Makefile
@@ -6,6 +6,7 @@ include $(ERL_TOP)/make/$(TARGET)/otp.mk
 # ----------------------------------------------------
 
 MODULES = \
+	crypto_bench_SUITE \
 	blowfish_SUITE \
 	crypto_SUITE \
 	engine_SUITE
@@ -77,7 +78,7 @@ 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/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 82d098ebd1..c4323de83f 100644
--- a/lib/crypto/test/crypto_SUITE.erl
+++ b/lib/crypto/test/crypto_SUITE.erl
@@ -56,6 +56,8 @@ groups() ->
                      {group, sha3_256},
                      {group, sha3_384},
                      {group, sha3_512},
+                     {group, blake2b},
+                     {group, blake2s},
                      {group, rsa},
                      {group, dss},
                      {group, ecdsa},
@@ -137,6 +139,8 @@ groups() ->
      {sha3_256, [], [hash, hmac]},
      {sha3_384, [], [hash, hmac]},
      {sha3_512, [], [hash, hmac]},
+     {blake2b, [], [hash, hmac]},
+     {blake2s, [], [hash, hmac]},
      {rsa, [], [sign_verify,
                 public_encrypt,
                 private_encrypt,
@@ -156,7 +160,7 @@ groups() ->
                  ]},
      {dh, [], [generate_compute,
                compute_bug]},
-     {ecdh, [], [generate_all_supported, compute, generate]},
+     {ecdh, [], [use_all_elliptic_curves, compute, generate]},
      {srp, [], [generate_compute]},
      {des_cbc, [], [block]},
      {des_cfb, [], [block]},
@@ -563,32 +567,43 @@ 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() ->
@@ -1427,6 +1442,12 @@ 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(),
@@ -1693,6 +1714,71 @@ 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",
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 2a89fa71a3..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),
diff --git a/lib/crypto/vsn.mk b/lib/crypto/vsn.mk
index 64d593f64a..6a91244715 100644
--- a/lib/crypto/vsn.mk
+++ b/lib/crypto/vsn.mk
@@ -1 +1 @@
-CRYPTO_VSN = 4.3.3
+CRYPTO_VSN = 4.4
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/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/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 ebe4040c34..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.
 
 %% ============================================================================
 %%
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..d7cbc27a4d
--- /dev/null
+++ b/lib/dialyzer/test/small_SUITE_data/src/lists_key_bug.erl
@@ -0,0 +1,19 @@
+-module(lists_key_bug).
+
+%% OTP-15570
+
+-export([t/1]).
+
+t(V) ->
+    K = key(V),
+    case lists:keyfind(K, 1, [{<<"foo">>, bar}]) of
+        false ->
+            a;
+        {_, _} ->
+            b
+    end.
+
+key(1) ->
+    3;
+key(2) ->
+    <<"foo">>.
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/diameter/doc/src/diameter.xml b/lib/diameter/doc/src/diameter.xml
index dfa4c803ed..0a0194af2d 100644
--- a/lib/diameter/doc/src/diameter.xml
+++ b/lib/diameter/doc/src/diameter.xml
@@ -55,7 +55,7 @@ limitations under the License.
 <!-- ===================================================================== -->
 <!-- ===================================================================== -->
 
-<module>diameter</module>
+<module since="OTP R14B03">diameter</module>
 <modulesummary>Main API of the diameter application.</modulesummary>
 
 <description>
@@ -1574,7 +1574,7 @@ 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 +1624,7 @@ 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 +1730,7 @@ 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 +1748,7 @@ 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 +1795,7 @@ 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 +2114,7 @@ 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 +2129,7 @@ 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 +2148,7 @@ 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 +2164,7 @@ 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 +2194,7 @@ 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 +2208,7 @@ 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 +2236,7 @@ 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 +2258,7 @@ 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..67fd54bc56 100644
--- a/lib/diameter/doc/src/diameter_transport.xml
+++ b/lib/diameter/doc/src/diameter_transport.xml
@@ -43,7 +43,7 @@ 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 +94,7 @@ 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>
diff --git a/lib/diameter/doc/src/notes.xml b/lib/diameter/doc/src/notes.xml
index 4bfc98de40..cc92bd99f0 100644
--- a/lib/diameter/doc/src/notes.xml
+++ b/lib/diameter/doc/src/notes.xml
@@ -78,6 +78,24 @@ 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_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_traffic.erl b/lib/diameter/src/base/diameter_traffic.erl
index d2856ae530..2d3e4a2ac9 100644
--- a/lib/diameter/src/base/diameter_traffic.erl
+++ b/lib/diameter/src/base/diameter_traffic.erl
@@ -1925,6 +1925,8 @@ 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..4e6b983bac 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.
@@ -59,6 +59,7 @@
   {"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
+  {"2.1.4.1", [{restart_application, diameter}]},  %% 20.3.8.19
   {"2.1.5",   [{update, diameter_peer_fsm}]}       %% 21.0
  ],
  [
@@ -100,6 +101,7 @@
   {"2.1.2",   [{restart_application, diameter}]},
   {"2.1.3",   [{restart_application, diameter}]},
   {"2.1.4",   [{restart_application, diameter}]},
+  {"2.1.4.1", [{restart_application, diameter}]},
   {"2.1.5",   [{update, diameter_peer_fsm}]}
  ]
 }.
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/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/priv/css/otp_doc.css b/lib/erl_docgen/priv/css/otp_doc.css
index 34c6befb0e..89b278215c 100644
--- a/lib/erl_docgen/priv/css/otp_doc.css
+++ b/lib/erl_docgen/priv/css/otp_doc.css
@@ -71,6 +71,33 @@ 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, .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%
+}
+
+.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 +310,9 @@ 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/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..c5150d447c 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=".."/> -->
@@ -1884,6 +1899,16 @@
         <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 +2055,10 @@
   <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 +2117,29 @@
 
     <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="func-td">
+              <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>
+	    </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 +2170,25 @@
             </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>
diff --git a/lib/erl_interface/configure.in b/lib/erl_interface/configure.in
index 46dd995289..14f06f946f 100644
--- a/lib/erl_interface/configure.in
+++ b/lib/erl_interface/configure.in
@@ -77,6 +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 ----------------------------------------------------------------------
@@ -95,6 +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
@@ -153,7 +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?
@@ -188,7 +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)
 )
@@ -250,6 +263,7 @@ AC_SUBST(EI_THREADS)
 case "$threads_disabled" in
     no|maybe)
 	LM_CHECK_THR_LIB
+        ETHR_CHK_GCC_ATOMIC_OPS([])
 
 	case "$THR_LIB_NAME" in
 	    "")
@@ -263,7 +277,7 @@ case "$threads_disabled" in
 		EI_THREADS="true"	
 		THR_DEFS="$THR_DEFS -D_WIN32_WINNT=0x0600 -DWINVER=0x0600"
 		;;
-	    pthread)	
+	    pthread)
 		EI_THREADS="true"
 		;;
 	    *)
diff --git a/lib/erl_interface/doc/src/ei.xml b/lib/erl_interface/doc/src/ei.xml
index 9502fb1ee7..ae322255ad 100644
--- a/lib/erl_interface/doc/src/ei.xml
+++ b/lib/erl_interface/doc/src/ei.xml
@@ -124,7 +124,7 @@ 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 +134,7 @@ 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 +158,7 @@ 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 +168,7 @@ 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 +180,7 @@ 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 +190,7 @@ 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 +203,7 @@ 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 +212,7 @@ 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 +233,8 @@ 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 +248,7 @@ 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 +265,7 @@ 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 +275,7 @@ 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 +286,7 @@ 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 +299,7 @@ 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 +307,7 @@ 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 +315,7 @@ 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 +323,7 @@ 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 +338,7 @@ 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 +352,7 @@ 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 +360,7 @@ 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 +370,7 @@ 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 +380,7 @@ 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 +390,7 @@ 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 +400,10 @@ 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 +415,10 @@ 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 +435,8 @@ 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 +446,8 @@ 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 +456,8 @@ 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 +467,8 @@ 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 +481,8 @@ 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 +493,8 @@ 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 +502,8 @@ 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 +515,8 @@ 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 +552,8 @@ 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 +563,8 @@ 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 +574,8 @@ 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 +595,8 @@ 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 +607,8 @@ 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 +619,8 @@ 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 +631,10 @@ 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 +645,8 @@ 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 +656,8 @@ 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 +668,8 @@ 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 +687,8 @@ 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 +698,8 @@ 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 +709,8 @@ 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 +719,7 @@ 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 +733,23 @@ 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 @OTP-15442@"><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 +774,7 @@ 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 +809,7 @@ 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 +830,8 @@ 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 +839,8 @@ 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 +868,7 @@ 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 +877,8 @@ 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..e318dd6664 100644
--- a/lib/erl_interface/doc/src/ei_connect.xml
+++ b/lib/erl_interface/doc/src/ei_connect.xml
@@ -85,20 +85,288 @@
       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 +398,7 @@ 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 +409,16 @@ 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 @OTP-15442@"><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 +468,10 @@ 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 @OTP-15442@"><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 @OTP-15442@"><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 +514,21 @@ 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 +566,8 @@ 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 +579,8 @@ 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 +592,46 @@ 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 @OTP-15442@"><ret>int</ret><nametext>ei_listen(ei_cnode *ec, int *port, int backlog)</nametext></name>
+      <name since="OTP @OTP-15442@"><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 +668,7 @@ 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 +678,7 @@ 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 +719,7 @@ 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 +749,7 @@ 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 +760,8 @@ 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 +825,8 @@ 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 +836,7 @@ 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 +846,7 @@ 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 +878,7 @@ 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 +889,9 @@ 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 +990,7 @@ 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 +1003,7 @@ 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 +1024,7 @@ 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 +1034,7 @@ 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 +1045,7 @@ 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 +1073,7 @@ 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 +1084,7 @@ 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 +1094,9 @@ 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 +1111,7 @@ 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 +1134,7 @@ 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..2dfd99e35a 100644
--- a/lib/erl_interface/doc/src/ei_users_guide.xml
+++ b/lib/erl_interface/doc/src/ei_users_guide.xml
@@ -162,12 +162,20 @@ $ 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..139ac9e2f0 100644
--- a/lib/erl_interface/doc/src/erl_connect.xml
+++ b/lib/erl_interface/doc/src/erl_connect.xml
@@ -49,7 +49,7 @@
 
   <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 +78,7 @@ 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 +95,8 @@ 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 +149,8 @@ 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 +246,7 @@ 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 +277,7 @@ 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 +316,7 @@ 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 +411,7 @@ 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 +439,9 @@ 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 +511,7 @@ 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 +541,11 @@ 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 +556,7 @@ 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 +583,7 @@ 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 +616,10 @@ 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..070ed30dfe 100644
--- a/lib/erl_interface/doc/src/erl_eterm.xml
+++ b/lib/erl_interface/doc/src/erl_eterm.xml
@@ -142,7 +142,7 @@
 
   <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 +181,7 @@ 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 +193,7 @@ 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 +215,7 @@ 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 +230,7 @@ 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 +245,7 @@ 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 +262,7 @@ 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 +289,7 @@ 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 +312,7 @@ 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 +328,7 @@ 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 +355,7 @@ 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 +378,7 @@ 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 +388,7 @@ 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 +408,7 @@ 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 +426,7 @@ 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 +443,7 @@ 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 +465,7 @@ 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 +495,7 @@ 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 +525,7 @@ 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 +550,7 @@ 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 +578,7 @@ 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 +593,7 @@ 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 +621,7 @@ 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 +638,7 @@ 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 +653,7 @@ 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 +672,7 @@ 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 +706,7 @@ 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 +723,7 @@ 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 +738,7 @@ 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..72d43e81d5 100644
--- a/lib/erl_interface/doc/src/erl_global.xml
+++ b/lib/erl_interface/doc/src/erl_global.xml
@@ -48,7 +48,7 @@
 
   <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 +79,7 @@
     </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 +103,7 @@
     </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 +122,7 @@
     </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_malloc.xml b/lib/erl_interface/doc/src/erl_malloc.xml
index c0eebc29e9..aae3b7e078 100644
--- a/lib/erl_interface/doc/src/erl_malloc.xml
+++ b/lib/erl_interface/doc/src/erl_malloc.xml
@@ -41,7 +41,7 @@
 
   <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 +89,7 @@
     </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 +99,7 @@
     </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 +127,7 @@
     </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 +139,7 @@
     </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 +156,7 @@
     </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 +179,7 @@
     </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 +190,7 @@
     </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..1a6d3bb43c 100644
--- a/lib/erl_interface/doc/src/erl_marshal.xml
+++ b/lib/erl_interface/doc/src/erl_marshal.xml
@@ -42,7 +42,7 @@
 
   <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 +62,8 @@
     </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 +102,8 @@
     </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 +179,7 @@
     </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 +190,7 @@
     </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 +228,7 @@
     </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 +252,7 @@
     </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/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..ca4960b252 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 */
@@ -286,6 +289,31 @@ 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 +323,8 @@ 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 +338,6 @@ typedef struct ei_x_buff_TAG {
     int index;
 } ei_x_buff;
 
-
 /* -------------------------------------------------------------------- */
 /*    Function definitions (listed in same order as documentation)      */
 /* -------------------------------------------------------------------- */
@@ -322,6 +351,16 @@ 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 +387,15 @@ 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 +669,8 @@ struct ei_reg_tabstat {
 };
 
 
+int ei_init(void);
+
 /* -------------------------------------------------------------------- */
 /*                               XXXXXXXXXXX                            */
 /* -------------------------------------------------------------------- */
diff --git a/lib/erl_interface/src/Makefile.in b/lib/erl_interface/src/Makefile.in
index 614e7325a9..b0bb9bfadf 100644
--- a/lib/erl_interface/src/Makefile.in
+++ b/lib/erl_interface/src/Makefile.in
@@ -31,12 +31,11 @@
 
 .PHONY : debug opt release clean distclean depend
 
-TARGET = @TARGET@
-
 # ----------------------------------------------------
 # 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
@@ -417,7 +416,8 @@ 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/connect/ei_connect.c b/lib/erl_interface/src/connect/ei_connect.c
index 9df4fa3b6c..7a304e6d4f 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] ));
@@ -400,34 +603,62 @@ 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);
 
+    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 & 0x3; /* 2 bits */
     
     if (cookie) {
@@ -469,6 +700,9 @@ int ei_connect_xinit(ei_cnode* ec, const char *thishostname,
     ec->self.serial = 0;
     ec->self.creation = creation & 0x3; /* 2 bits */
 
+    ec->cbs = cbs;
+    ec->setup_context = setup_context;
+
     if ((dbglevel = getenv("EI_TRACELEVEL")) != NULL ||
 	(dbglevel = getenv("ERL_DEBUG_DIST")) != NULL)
 	ei_tracelevel = atoi(dbglevel);
@@ -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/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..20b8e867e8 100644
--- a/lib/erl_interface/src/epmd/epmd_publish.c
+++ b/lib/erl_interface/src/epmd/epmd_publish.c
@@ -68,8 +68,10 @@ 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, res, creation;
+  ssize_t dlen;
+  unsigned tmo = ms == 0 ? EI_SCLBK_INF_TMO : ms;
+
   if (len > sizeof(buf)-2)
   {
     erl_errno = ERANGE;
@@ -93,29 +95,39 @@ 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);
     EI_TRACE_ERR0("ei_epmd_r4_publish","-> CLOSE");
-    closesocket(fd);
+    ei_close__(fd);
     erl_errno = EIO;
     return -1;
   }
@@ -124,7 +136,7 @@ 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;
   }
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/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/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_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/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/et/doc/src/notes.xml b/lib/et/doc/src/notes.xml
index 110d3b2110..e144defb69 100644
--- a/lib/et/doc/src/notes.xml
+++ b/lib/et/doc/src/notes.xml
@@ -37,6 +37,23 @@
   one section in this document. The title of each section is the
   version number of <c>Event Tracer (ET)</c>.</p>
 
+<section><title>ET 1.6.4</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    The scroll bar of the et_viewer window could not be
+	    dragged all the way to the top of the window. It would
+	    always stop at the second event. This is now corrected.</p>
+          <p>
+	    Own Id: OTP-15463 Aux Id: ERL-780 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>ET 1.6.3</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
diff --git a/lib/et/vsn.mk b/lib/et/vsn.mk
index 9563a38000..d5416f1ea9 100644
--- a/lib/et/vsn.mk
+++ b/lib/et/vsn.mk
@@ -1 +1 @@
-ET_VSN  = 1.6.3
+ET_VSN  = 1.6.4
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/hipe/cerl/erl_bif_types.erl b/lib/hipe/cerl/erl_bif_types.erl
index 48ce641ab9..799957dfdc 100644
--- a/lib/hipe/cerl/erl_bif_types.erl
+++ b/lib/hipe/cerl/erl_bif_types.erl
@@ -2224,11 +2224,7 @@ type_order() ->
   [t_number(), t_atom(), t_reference(), t_fun(), t_port(), t_pid(), t_tuple(),
    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,
+key_comparisons_fail(X, KeyPos, TupleList, Opaques) ->
   lists:all(fun(Tuple) ->
 		Key = type(erlang, element, 2, [KeyPos, Tuple]),
 		t_is_none(t_inf(Key, X, Opaques))
diff --git a/lib/hipe/doc/src/notes.xml b/lib/hipe/doc/src/notes.xml
index d9f58382bc..e9cdf42018 100644
--- a/lib/hipe/doc/src/notes.xml
+++ b/lib/hipe/doc/src/notes.xml
@@ -31,6 +31,22 @@
   </header>
   <p>This document describes the changes made to HiPE.</p>
 
+<section><title>Hipe 3.18.2</title>
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+	    <p>The code was updated to avoid causing a dialyzer
+	    warning because of a tightened spec for
+	    <c>beam_lib:info/1</c>.</p>
+          <p>
+	    Own Id: OTP-15482</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Hipe 3.18.1</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
diff --git a/lib/hipe/vsn.mk b/lib/hipe/vsn.mk
index b51f17aff0..12d621bf01 100644
--- a/lib/hipe/vsn.mk
+++ b/lib/hipe/vsn.mk
@@ -1 +1 @@
-HIPE_VSN = 3.18.1
+HIPE_VSN = 3.18.2
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 e5adb4eb20..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>
@@ -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 e34dd78a2a..31dae6317e 100644
--- a/lib/inets/doc/src/notes.xml
+++ b/lib/inets/doc/src/notes.xml
@@ -33,7 +33,71 @@
     <file>notes.xml</file>
   </header>
   
-  <section><title>Inets 7.0.2</title>
+  <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>
+        <item>
+          <p>
+	    Fixed http client to not send 'content-length' header in
+	    chunked encoded requests.</p>
+          <p>
+	    Own Id: OTP-15338 Aux Id: ERL-733 </p>
+        </item>
+        <item>
+          <p>
+	    Fixed http client to not drop explicit 'Content-Type'
+	    header in requests without a body such as requests with
+	    the 'Content-Type' of application/x-www-form-urlencoded.</p>
+          <p>
+	    Own Id: OTP-15339 Aux Id: ERL-736 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>Inets 7.0.2</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
       <list>
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/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 26adb854e1..921161dce1 100644
--- a/lib/inets/vsn.mk
+++ b/lib/inets/vsn.mk
@@ -19,6 +19,6 @@
 # %CopyrightEnd%
 
 APPLICATION = inets
-INETS_VSN   = 7.0.2
+INETS_VSN   = 7.0.5
 PRE_VSN     =
 APP_VSN     = "$(APPLICATION)-$(INETS_VSN)$(PRE_VSN)"
diff --git a/lib/kernel/doc/src/application.xml b/lib/kernel/doc/src/application.xml
index 38c7b5acf1..4e32c1a3a5 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 +238,7 @@ Nodes = [cp1@cave, {cp2@cave, cp3@cave}]</code>
       </desc>
     </func>
     <func>
-      <name name="permit" arity="2"/>
+      <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 +271,8 @@ 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 +302,8 @@ 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 +353,7 @@ 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 +370,7 @@ 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 +399,7 @@ 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 +424,7 @@ 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 +435,8 @@ 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 +459,8 @@ 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 +484,7 @@ 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 +526,7 @@ 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>
@@ -551,7 +551,7 @@ Nodes = [cp1@cave, {cp2@cave, cp3@cave}]</code>
       </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 +569,7 @@ 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 +585,7 @@ 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..a57da18de9 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
@@ -42,7 +42,7 @@
   </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
@@ -51,7 +51,7 @@
       </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.
@@ -63,7 +63,7 @@
       </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>
@@ -88,7 +88,7 @@
       </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
diff --git a/lib/kernel/doc/src/code.xml b/lib/kernel/doc/src/code.xml
index 69ce4da61c..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
@@ -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
@@ -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..f2d5e1b397 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
@@ -196,7 +196,7 @@
   </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 
@@ -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
@@ -425,7 +425,7 @@
       </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
@@ -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..f70d6c24db 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>
@@ -248,7 +248,7 @@ 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
@@ -259,7 +259,7 @@ connect(Socket, Ip, Port>,
     </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/logger.xml b/lib/kernel/doc/src/logger.xml
index 556f25f96a..df2d081d76 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>
 
@@ -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
@@ -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,
@@ -1062,7 +1128,7 @@ 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 +1154,7 @@ 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 +1192,7 @@ 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 +1212,7 @@ 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 +1235,7 @@ 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 +1263,7 @@ 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 +1294,7 @@ 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 =
diff --git a/lib/kernel/doc/src/logger_chapter.xml b/lib/kernel/doc/src/logger_chapter.xml
index c7e87e6668..03b9edcf8f 100644
--- a/lib/kernel/doc/src/logger_chapter.xml
+++ b/lib/kernel/doc/src/logger_chapter.xml
@@ -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>
@@ -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
@@ -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..5b2374690e 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>
@@ -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..fcd180abd6 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>
@@ -121,7 +121,7 @@ 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 bfbaf6ef3e..021ecfa40d 100644
--- a/lib/kernel/doc/src/notes.xml
+++ b/lib/kernel/doc/src/notes.xml
@@ -31,6 +31,107 @@
   </header>
   <p>This document describes the changes made to the Kernel application.</p>
 
+<section><title>Kernel 6.2</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    A new function, <c>logger:update_handler_config/3</c> is
+	    added, and the handler callback <c>changing_config</c>
+	    now has a new argument, <c>SetOrUpdate</c>, which
+	    indicates if the configuration change comes from
+	    <c>set_handler_config/2,3</c> or
+	    <c>update_handler_config/2,3</c>.</p>
+          <p>
+	    This allows the handler to consistently merge the new
+	    configuration with the old (if the change comes from
+	    <c>update_handler_config/2,3</c>) or with the default (if
+	    the change comes from <c>set_handler_config/2,3</c>).</p>
+          <p>
+	    The built-in handlers <c>logger_std_h</c> and
+	    <c>logger_disk_log_h</c> are updated accordingly. A bug
+	    which could cause inconsistency between the handlers'
+	    internal state and the stored configuration is also
+	    corrected.</p>
+          <p>
+	    *** POTENTIAL INCOMPATIBILITY ***</p>
+          <p>
+	    Own Id: OTP-15364</p>
+        </item>
+        <item>
+          <p>
+	    Fix fallback when custom erl_epmd client does not
+	    implement address_please.</p>
+          <p>
+	    Own Id: OTP-15388 Aux Id: PR-1983 </p>
+        </item>
+        <item>
+          <p>
+	    The logger ets table did not have the
+	    <c>read_concurrency</c> option. This is now added.</p>
+          <p>
+	    Own Id: OTP-15453 Aux Id: ERL-782 </p>
+        </item>
+        <item>
+          <p>
+	    During system start, logger has a simple handler which
+	    prints to stdout. After the kernel supervision is
+	    started, this handler is removed and replaced by the
+	    default handler. Due to a bug, logger earlier issued a
+	    debug printout saying it received an unexpected message,
+	    which was the EXIT message from the simple handler's
+	    process. This is now corrected. The simple handler's
+	    process now unlinks from the logger process before
+	    terminating.</p>
+          <p>
+	    Own Id: OTP-15466 Aux Id: ERL-788 </p>
+        </item>
+        <item>
+          <p>
+	    The logger handler <c>logger_std_h</c> would not
+	    re-create it's log file if it was removed. Due to this it
+	    could not be used with tools like 'logrotate'. This is
+	    now corrected.</p>
+          <p>
+	    Own Id: OTP-15469</p>
+        </item>
+      </list>
+    </section>
+
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+          <p>
+	    A function <c>inet:getifaddrs/1</c> that takes a list
+	    with a namespace option has been added, for platforms
+	    that support that feature, for example Linux (only?).</p>
+          <p>
+	    Own Id: OTP-15121 Aux Id: ERIERL-189, PR-1974 </p>
+        </item>
+        <item>
+	    <p>Added the <c>nopush</c> option for TCP sockets, which
+	    corresponds to <c>TCP_NOPUSH</c> on *BSD and
+	    <c>TCP_CORK</c> on Linux.</p>
+	    <p>This is also used internally in <c>file:sendfile</c>
+	    to reduce latency on subsequent send operations.</p>
+          <p>
+	    Own Id: OTP-15357 Aux Id: ERL-698 </p>
+        </item>
+        <item>
+          <p>
+	    Optimize handling of send_delay for tcp sockes to better
+	    work with the new pollthread implementation introduced in
+	    OTP-21.</p>
+          <p>
+	    Own Id: OTP-15471 Aux Id: ERIERL-229 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Kernel 6.1.1</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/src/Makefile b/lib/kernel/src/Makefile
index 57f17defc8..3d1506ea08 100644
--- a/lib/kernel/src/Makefile
+++ b/lib/kernel/src/Makefile
@@ -118,6 +118,8 @@ MODULES = \
 	logger_h_common \
 	logger_filters \
         logger_formatter \
+	logger_olp \
+	logger_proxy \
         logger_server \
         logger_simple_h \
         logger_sup \
@@ -151,7 +153,7 @@ 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)
 
@@ -279,6 +281,8 @@ $(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/erl_epmd.erl b/lib/kernel/src/erl_epmd.erl
index b7e8868911..7a14e2635c 100644
--- a/lib/kernel/src/erl_epmd.erl
+++ b/lib/kernel/src/erl_epmd.erl
@@ -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().
diff --git a/lib/kernel/src/kernel.app.src b/lib/kernel/src/kernel.app.src
index fe073621c8..a1d9e8e215 100644
--- a/lib/kernel/src/kernel.app.src
+++ b/lib/kernel/src/kernel.app.src
@@ -68,6 +68,8 @@
              logger_formatter,
              logger_h_common,
              logger_handler_watcher,
+             logger_olp,
+             logger_proxy,
              logger_server,
              logger_simple_h,
              logger_std_h,
diff --git a/lib/kernel/src/kernel.appup.src b/lib/kernel/src/kernel.appup.src
index e73cea8351..ccf0a82ced 100644
--- a/lib/kernel/src/kernel.appup.src
+++ b/lib/kernel/src/kernel.appup.src
@@ -39,7 +39,8 @@
   {<<"^6\\.0\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]},
   {<<"^6\\.0\\.1(?:\\.[0-9]+)*$">>,[restart_new_emulator]},
   {<<"^6\\.1$">>,[restart_new_emulator]},
-  {<<"^6\\.1\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]}],
+  {<<"^6\\.1\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]},
+  {<<"^6\\.1\\.1(?:\\.[0-9]+)*$">>,[restart_new_emulator]}],
  [{<<"^5\\.3$">>,[restart_new_emulator]},
   {<<"^5\\.3\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]},
   {<<"^5\\.3\\.1(?:\\.[0-9]+)*$">>,[restart_new_emulator]},
@@ -52,4 +53,5 @@
   {<<"^6\\.0\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]},
   {<<"^6\\.0\\.1(?:\\.[0-9]+)*$">>,[restart_new_emulator]},
   {<<"^6\\.1$">>,[restart_new_emulator]},
-  {<<"^6\\.1\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]}]}.
+  {<<"^6\\.1\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]},
+  {<<"^6\\.1\\.1(?:\\.[0-9]+)*$">>,[restart_new_emulator]}]}.
diff --git a/lib/kernel/src/logger.erl b/lib/kernel/src/logger.erl
index 6762998d4f..7d36640f52 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 +60,7 @@
 -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]).
 
 %% Basic report formatting
 -export([format_report/1, format_otp_report/1]).
@@ -122,6 +126,18 @@
                           {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 +153,8 @@
               filter_arg/0,
               filter_return/0,
               config_handler/0,
-              formatter_config/0]).
+              formatter_config/0,
+              olp_config/0]).
 
 %%%-----------------------------------------------------------------
 %%% API
@@ -390,6 +407,7 @@ 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 +437,11 @@ 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 +476,11 @@ 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 +514,12 @@ 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 +640,150 @@ 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 +844,17 @@ 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 +912,8 @@ 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 +969,13 @@ 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 +1072,30 @@ 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 +1105,7 @@ 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) ->
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_h_common.erl b/lib/kernel/src/logger_h_common.erl
index 74a2d158fc..e69f6de38d 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 +109,52 @@ 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 ->
+                            maybe_set_repeated_filesync(Olp,OldCommonConfig,
+                                                        NewCommonConfig),
+                            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 +169,12 @@ 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 +189,23 @@ 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 +214,50 @@ 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 +280,83 @@ 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({set_repeated_filesync,FSyncInt},State) ->
+    State1 = State#{filesync_repeat_interval=>FSyncInt},
+    State2 = set_repeated_filesync(cancel_repeated_filesync(State1)),
+    {noreply, State2}.
 
 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},
+                                       handler_state:=HandlerState}=State) ->
+    Config =
+        case logger:get_handler_config(Name) of
+            {ok,Conf} -> Conf;
+            _ -> #{formatter=>{?DEFAULT_FORMATTER,?DEFAULT_FORMAT_CONFIG}}
+        end,
     Meta = #{time=>erlang:system_time(microsecond)},
     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 +416,8 @@ 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 +427,7 @@ 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 +445,12 @@ 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).
+
+maybe_set_repeated_filesync(_Olp,
+                            #{filesync_repeat_interval:=FSyncInt},
+                            #{filesync_repeat_interval:=FSyncInt}) ->
+    ok;
+maybe_set_repeated_filesync(Olp,_,#{filesync_repeat_interval:=FSyncInt}) ->
+    logger_olp:cast(Olp,{set_repeated_filesync,FSyncInt}).
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..009280a9c9
--- /dev/null
+++ b/lib/kernel/src/logger_olp.erl
@@ -0,0 +1,626 @@
+%%
+%% %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 = maybe_notify_mode_change(Mode1,State2),
+    {Mode1, QLen, Mem,
+     ?update_other(flushes,FLUSHES,_NewFlushes,
+                   State3#{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..9b4f5ebf27
--- /dev/null
+++ b/lib/kernel/src/logger_olp.hrl
@@ -0,0 +1,180 @@
+%%
+%% %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,
+                     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_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_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_std_h.erl b/lib/kernel/src/logger_std_h.erl
index 63d1dbaba2..0669164bb6 100644
--- a/lib/kernel/src/logger_std_h.erl
+++ b/lib/kernel/src/logger_std_h.erl
@@ -26,7 +26,7 @@
 -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,
@@ -36,6 +36,8 @@
 -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
 %%%===================================================================
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/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..8a6ffe7e72 100644
--- a/lib/kernel/test/Makefile
+++ b/lib/kernel/test/Makefile
@@ -76,8 +76,11 @@ 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 \
diff --git a/lib/kernel/test/gen_tcp_misc_SUITE.erl b/lib/kernel/test/gen_tcp_misc_SUITE.erl
index c47de58fae..52edfaee29 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() -> 
     [].
@@ -1998,8 +1998,9 @@ recvttl_ok({unix,darwin}, OSVer) -> not semver_lt(OSVer, {19,0,0});
 %% Using the option returns einval, so it is not implemented.
 recvttl_ok({unix,freebsd}, OSVer) -> not semver_lt(OSVer, {11,2,0});
 recvttl_ok({unix,sunos}, OSVer) -> not semver_lt(OSVer, {5,12,0});
+%% Does not return any value - not implemented for pktoptions
+recvttl_ok({unix,linux}, OSVer) -> not semver_lt(OSVer, {2,7,0});
 %%
-recvttl_ok({unix,linux}, _) -> true;
 recvttl_ok({unix,_}, _) -> true;
 recvttl_ok(_, _) -> false.
 
@@ -3426,3 +3427,32 @@ 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/init_SUITE.erl b/lib/kernel/test/init_SUITE.erl
index 7828cc4716..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{}).
@@ -448,7 +455,8 @@ 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,{erl_init,start,2}},_] ->
@@ -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_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/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..2dad651f9c 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),
@@ -1141,6 +1142,61 @@ 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..9bbec42de8 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,
@@ -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.
@@ -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,
@@ -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_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..484d914ec3 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} ->
@@ -115,7 +120,6 @@ all() ->
      crash_std_h_to_file,
      crash_std_h_to_disk_log,
      bad_input,
-     info_and_reset,
      reconfig,
      file_opts,
      sync,
@@ -209,9 +213,9 @@ 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.
@@ -246,13 +250,13 @@ 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,{open_failed,Log,_}}} =
         logger:add_handler(myh3,logger_std_h,
                            #{config=>#{type=>{file,Log,[bad_file_opt]}}}),
 
@@ -320,19 +324,16 @@ 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 +345,7 @@ 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 +356,7 @@ 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 +424,13 @@ 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 +458,7 @@ 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 +468,10 @@ 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 +481,8 @@ 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 +513,10 @@ 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 +526,7 @@ 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,
@@ -613,7 +608,7 @@ file_opts(Config) ->
     Log = filename:join(Dir, lists:concat([?FUNCTION_NAME,".log"])),
     BadFileOpts = [raw],
     BadType = {file,Log,BadFileOpts},
-    {error,{handler_not_added,{{open_failed,Log,enoent},_}}} =
+    {error,{handler_not_added,{open_failed,Log,enoent}}} =
         logger:add_handler(?MODULE, logger_std_h,
                            #{config => #{type => BadType}}),
 
@@ -626,7 +621,9 @@ file_opts(Config) ->
                               filters=>?DEFAULT_HANDLER_FILTERS([?MODULE]),
                               formatter=>{?MODULE,self()}}),
 
-    #{handler_state := #{type := OkType}} = logger_std_h:info(?MODULE),
+    #{cb_state := #{handler_state := #{type := OkType}}} =
+        logger_olp:info(h_proc_name()),
+    {ok,#{config := #{type := OkType}}} = logger:get_handler_config(?MODULE),
     logger:notice(M1=?msg,?domain),
     ?check(M1),
     B1 = ?bin(M1),
@@ -675,11 +672,8 @@ 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),
+    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, 5},
                   {file, datasync, 1}],
                  [{logger_std_h, write_to_dev, <<"third\n">>},
@@ -688,22 +682,24 @@ 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 +760,6 @@ 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 +1089,7 @@ 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 +1099,7 @@ 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 +1140,7 @@ 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 +1150,7 @@ 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 +1181,7 @@ 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 +1206,7 @@ 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 +1228,15 @@ 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 +1247,9 @@ 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) ->
@@ -1272,22 +1271,14 @@ recreate_deleted_log(cleanup, _Config) ->
 
 %%%-----------------------------------------------------------------
 %%%
-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.
             
 
@@ -1624,7 +1615,8 @@ 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 +1624,9 @@ 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;
diff --git a/lib/kernel/test/logger_stress_SUITE.erl b/lib/kernel/test/logger_stress_SUITE.erl
new file mode 100644
index 0000000000..4072e8c86a
--- /dev/null
+++ b/lib/kernel/test/logger_stress_SUITE.erl
@@ -0,0 +1,456 @@
+%%
+%% %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,
+     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.
+
+%% 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.
+
+%% 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
+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 3bbf62e832..663f910751 100644
--- a/lib/kernel/test/seq_trace_SUITE.erl
+++ b/lib/kernel/test/seq_trace_SUITE.erl
@@ -28,7 +28,8 @@
 -export([token_set_get/1, tracer_set_get/1, print/1,
 	 send/1, distributed_send/1, recv/1, distributed_recv/1,
 	 trace_exit/1, distributed_exit/1, call/1, port/1,
-	 match_set_seq_token/1, gc_seq_token/1, label_capability_mismatch/1]).
+	 match_set_seq_token/1, gc_seq_token/1, label_capability_mismatch/1,
+         send_literal/1]).
 
 %% internal exports
 -export([simple_tracer/2, one_time_receiver/0, one_time_receiver/1,
@@ -47,7 +48,7 @@ suite() ->
      {timetrap,{minutes,1}}].
 
 all() -> 
-    [token_set_get, tracer_set_get, print, send,
+    [token_set_get, tracer_set_get, print, send, send_literal,
      distributed_send, recv, distributed_recv, trace_exit,
      distributed_exit, call, port, match_set_seq_token,
      gc_seq_token, label_capability_mismatch].
@@ -161,23 +162,51 @@ do_print(TsType) ->
 	   {0,{print,_,_,[],print3}, Ts1}] = stop_tracer(2),
     check_ts(TsType, Ts0),
     check_ts(TsType, Ts1).
-    
+
 send(Config) when is_list(Config) ->
     lists:foreach(fun do_send/1, ?TIMESTAMP_MODES).
 
 do_send(TsType) ->
+    do_send(TsType, send).
+
+do_send(TsType, Msg) ->
     seq_trace:reset_trace(),
     start_tracer(),
     Receiver = spawn(?MODULE,one_time_receiver,[]),
     Label = make_ref(),
     seq_trace:set_token(label,Label),
     set_token_flags([send, TsType]),
-    Receiver ! send,
+    Receiver ! Msg,
     Self = self(),
     seq_trace:reset_trace(),
-    [{Label,{send,_,Self,Receiver,send}, Ts}] = stop_tracer(1),
+    [{Label,{send,_,Self,Receiver,Msg}, Ts}] = stop_tracer(1),
     check_ts(TsType, Ts).
 
+%% This testcase tests that we do not segfault when we have a
+%% literal as the message and the message is copied onto the
+%% heap during a GC.
+send_literal(Config) when is_list(Config) ->
+    lists:foreach(fun do_send_literal/1,
+                  [atom, make_ref(), ets:new(hej,[]), 1 bsl 64,
+                   "gurka", {tuple,test,with,#{}}, #{}]).
+
+do_send_literal(Msg) ->
+    N = 10000,
+    seq_trace:reset_trace(),
+    start_tracer(),
+    Label = make_ref(),
+    seq_trace:set_token(label,Label),
+    set_token_flags([send, 'receive', no_timestamp]),
+    Receiver = spawn_link(fun() -> receive ok -> ok end end),
+    [Receiver ! Msg || _ <- lists:seq(1, N)],
+    erlang:garbage_collect(Receiver),
+    [Receiver ! Msg || _ <- lists:seq(1, N)],
+    erlang:garbage_collect(Receiver),
+    Self = self(),
+    seq_trace:reset_trace(),
+    [{Label,{send,_,Self,Receiver,Msg}, Ts} | _] = stop_tracer(N),
+    check_ts(no_timestamp, Ts).
+
 distributed_send(Config) when is_list(Config) ->
     lists:foreach(fun do_distributed_send/1, ?TIMESTAMP_MODES).
 
diff --git a/lib/kernel/vsn.mk b/lib/kernel/vsn.mk
index 35e6a16a49..4b43c6ae9d 100644
--- a/lib/kernel/vsn.mk
+++ b/lib/kernel/vsn.mk
@@ -1 +1 @@
-KERNEL_VSN = 6.1.1
+KERNEL_VSN = 6.2
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/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/src/mnesia.erl b/lib/mnesia/src/mnesia.erl
index 223dba3f90..77afb8250c 100644
--- a/lib/mnesia/src/mnesia.erl
+++ b/lib/mnesia/src/mnesia.erl
@@ -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.
 
diff --git a/lib/mnesia/src/mnesia_dumper.erl b/lib/mnesia/src/mnesia_dumper.erl
index a2880d6cf4..964f1f5b7d 100644
--- a/lib/mnesia/src/mnesia_dumper.erl
+++ b/lib/mnesia/src/mnesia_dumper.erl
@@ -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/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 4d1a9a4f55..22035af982 100644
--- a/lib/observer/doc/src/notes.xml
+++ b/lib/observer/doc/src/notes.xml
@@ -32,6 +32,43 @@
   <p>This document describes the changes made to the Observer
     application.</p>
 
+<section><title>Observer 2.8.2</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p>Literals such as <c>#{"one"=>1}</c> dumped to a crash
+	    dump would cause <c>crashdump_viewer</c> to crash.</p>
+          <p>
+	    Own Id: OTP-15365 Aux Id: ERL-722 </p>
+        </item>
+        <item>
+          <p>
+	    <c>crashdump_viewer</c> would sometimes crash when
+	    processing a dump which was truncated in the
+	    <c>literals</c> area. This is now corrected.</p>
+          <p>
+	    Own Id: OTP-15377</p>
+        </item>
+        <item>
+          <p>
+	    Since OTP-20.2, <c>crashdump_viewer</c> was very slow
+	    when opening a crash dump with many processes. An
+	    ets:select per process could be removed, which improved
+	    the performance a lot.</p>
+          <p>
+	    A bug when parsing heap data in a crashdump caused
+	    <c>crashdump_viewer</c> to crash when multiple <c>Yc</c>
+	    lines referenced the same reference counted binary. This
+	    is now corrected.</p>
+          <p>
+	    Own Id: OTP-15391</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Observer 2.8.1</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_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_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 f64a278a64..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),
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 dfd19569fd..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),
diff --git a/lib/observer/src/observer_wx.erl b/lib/observer/src/observer_wx.erl
index 1f748cb8d2..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;
diff --git a/lib/observer/test/crashdump_helper.erl b/lib/observer/test/crashdump_helper.erl
index a71e8fc29c..d6b5eff9b5 100644
--- a/lib/observer/test/crashdump_helper.erl
+++ b/lib/observer/test/crashdump_helper.erl
@@ -204,4 +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/vsn.mk b/lib/observer/vsn.mk
index 21c8f4e6c9..5ce0aca589 100644
--- a/lib/observer/vsn.mk
+++ b/lib/observer/vsn.mk
@@ -1 +1 @@
-OBSERVER_VSN = 2.8.1
+OBSERVER_VSN = 2.8.2
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/doc/src/odbc.xml b/lib/odbc/doc/src/odbc.xml
index 9760908855..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>
@@ -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/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/notes.xml b/lib/os_mon/doc/src/notes.xml
index 0910b3c0f3..64e9f281e3 100644
--- a/lib/os_mon/doc/src/notes.xml
+++ b/lib/os_mon/doc/src/notes.xml
@@ -31,6 +31,24 @@
   </header>
   <p>This document describes the changes made to the OS_Mon application.</p>
 
+<section><title>Os_Mon 2.4.7</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Due to <c>/proc</c> restrictions in newer Android
+	    releases enforced by SELinux, cpu_sup is fixed so that it
+	    gets some basic CPU stats using the <c>sysinfo</c>
+	    syscall rather than reading <c>/proc/loadavg</c>.</p>
+          <p>
+	    Own Id: OTP-15387 Aux Id: PR-1966 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Os_Mon 2.4.6</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
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_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/vsn.mk b/lib/os_mon/vsn.mk
index 0c62c3db35..9713f6bc6b 100644
--- a/lib/os_mon/vsn.mk
+++ b/lib/os_mon/vsn.mk
@@ -1 +1 @@
-OS_MON_VSN = 2.4.6
+OS_MON_VSN = 2.4.7
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/doc/src/notes.xml b/lib/public_key/doc/src/notes.xml
index 7ed60ed3ca..b3e6023c41 100644
--- a/lib/public_key/doc/src/notes.xml
+++ b/lib/public_key/doc/src/notes.xml
@@ -35,6 +35,24 @@
     <file>notes.xml</file>
   </header>
 
+<section><title>Public_Key 1.6.4</title>
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+          <p>
+	    Added ed25519 and ed448 sign/verify.</p>
+          <p>
+	    Requires OpenSSL 1.1.1 or higher as cryptolib under the
+	    OTP application <c>crypto</c>.</p>
+          <p>
+	    Own Id: OTP-15419 Aux Id: OTP-15094 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Public_Key 1.6.3</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
diff --git a/lib/public_key/doc/src/public_key.xml b/lib/public_key/doc/src/public_key.xml
index 9523a3b7c2..9fcedf6ef9 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>
@@ -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
@@ -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.
@@ -742,7 +742,7 @@ fun(#'DistributionPoint'{}, #'CertificateList'{},
   </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>
@@ -864,7 +864,7 @@ 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 +889,8 @@ 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 +901,7 @@ 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 +933,7 @@ 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 +947,9 @@ 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 +982,8 @@ 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 +993,7 @@ 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/public_key.erl b/lib/public_key/src/public_key.erl
index 75d40d2e8a..fd85d3722d 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]).
 
 -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/vsn.mk b/lib/public_key/vsn.mk
index 96eaf4f962..5e2643f0ea 100644
--- a/lib/public_key/vsn.mk
+++ b/lib/public_key/vsn.mk
@@ -1 +1 @@
-PUBLIC_KEY_VSN = 1.6.3
+PUBLIC_KEY_VSN = 1.6.4
diff --git a/lib/reltool/doc/src/notes.xml b/lib/reltool/doc/src/notes.xml
index e201ad4e23..165ae6db6a 100644
--- a/lib/reltool/doc/src/notes.xml
+++ b/lib/reltool/doc/src/notes.xml
@@ -38,7 +38,25 @@
     thus constitutes one section in this document. The title of each
     section is the version number of Reltool.</p>
 
-  <section><title>Reltool 0.7.7</title>
+  <section><title>Reltool 0.7.8</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Reltool would earlier erroneously split paths like
+	    <c>"c:\foo"</c> into <c>["c","\foo"]</c> when reading the
+	    <c>$ERL_LIBS</c> variable on windows. This is now
+	    corrected.</p>
+          <p>
+	    Own Id: OTP-15454</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>Reltool 0.7.7</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
       <list>
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 f9a6fcf342..3888b643a2 100644
--- a/lib/reltool/doc/src/reltool_examples.xml
+++ b/lib/reltool/doc/src/reltool_examples.xml
@@ -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).
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 47aba77835..2de8000fd8 100644
--- a/lib/reltool/src/reltool_server.erl
+++ b/lib/reltool/src/reltool_server.erl
@@ -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 990bd5c217..f11aae61c6 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,
@@ -248,9 +249,9 @@ 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 +280,9 @@ 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},
@@ -549,6 +550,32 @@ 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.
@@ -2107,9 +2134,9 @@ 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 +2175,9 @@ 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},
diff --git a/lib/reltool/vsn.mk b/lib/reltool/vsn.mk
index 6bfc8c60ea..a649a3e0c0 100644
--- a/lib/reltool/vsn.mk
+++ b/lib/reltool/vsn.mk
@@ -1 +1 @@
-RELTOOL_VSN = 0.7.7
+RELTOOL_VSN = 0.7.8
diff --git a/lib/runtime_tools/doc/src/dbg.xml b/lib/runtime_tools/doc/src/dbg.xml
index ae60b610ed..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>
@@ -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>
@@ -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/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/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/notes.xml b/lib/sasl/doc/src/notes.xml
index fce032136d..982c874117 100644
--- a/lib/sasl/doc/src/notes.xml
+++ b/lib/sasl/doc/src/notes.xml
@@ -31,6 +31,23 @@
   </header>
   <p>This document describes the changes made to the SASL application.</p>
 
+<section><title>SASL 3.3</title>
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+          <p>
+	    New <c>counters</c> and <c>atomics</c> modules supplies
+	    access to highly efficient operations on mutable fixed
+	    word sized variables.</p>
+          <p>
+	    Own Id: OTP-13468</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>SASL 3.2.1</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
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/sasl.app.src b/lib/sasl/src/sasl.app.src
index 5d45af0b50..293af504df 100644
--- a/lib/sasl/src/sasl.app.src
+++ b/lib/sasl/src/sasl.app.src
@@ -43,5 +43,5 @@
     {env, []},
     {mod, {sasl, []}},
     {runtime_dependencies, ["tools-2.6.14","stdlib-3.4","kernel-5.3",
-			    "erts-@OTP-13468@"]}]}.
+			    "erts-10.2"]}]}.
 
diff --git a/lib/sasl/src/sasl.appup.src b/lib/sasl/src/sasl.appup.src
index d37c5b3d95..26127eae84 100644
--- a/lib/sasl/src/sasl.appup.src
+++ b/lib/sasl/src/sasl.appup.src
@@ -16,13 +16,30 @@
 %% limitations under the License.
 %%
 %% %CopyrightEnd%
+%%
+%% We allow upgrade from, and downgrade to all previous
+%% versions from the following OTP releases:
+%% - OTP 20
+%% - OTP 21
+%%
+%% We also allow upgrade from, and downgrade to all
+%% versions that have branched off from the above
+%% stated previous versions.
+%%
 {"%VSN%",
- %% Up from - max one major revision back
- [{<<"3\\.0\\.4(\\.[0-9]+)*">>,[restart_new_emulator]}, % OTP-20.0
-  {<<"3\\.1(\\.[0-9]+)*">>,[restart_new_emulator]},     % OTP-20.1+
-  {<<"3\\.2(\\.[0-9]+)*">>,[restart_new_emulator]}],    % OTP-21.*
- %% Down to - max one major revision back
- [{<<"3\\.0\\.4(\\.[0-9]+)*">>,[restart_new_emulator]}, % OTP-20.*
-  {<<"3\\.1(\\.[0-9]+)*">>,[restart_new_emulator]},     % OTP-20.1+
-  {<<"3\\.2(\\.[0-9]+)*">>,[restart_new_emulator]}]     % OTP-21.*
-}.
+ [{<<"^3\\.0\\.4(?:\\.[0-9]+)*$">>,[restart_new_emulator]},
+  {<<"^3\\.1$">>,[restart_new_emulator]},
+  {<<"^3\\.1\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]},
+  {<<"^3\\.1\\.1(?:\\.[0-9]+)*$">>,[restart_new_emulator]},
+  {<<"^3\\.1\\.2(?:\\.[0-9]+)*$">>,[restart_new_emulator]},
+  {<<"^3\\.2$">>,[restart_new_emulator]},
+  {<<"^3\\.2\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]},
+  {<<"^3\\.2\\.1(?:\\.[0-9]+)*$">>,[restart_new_emulator]}],
+ [{<<"^3\\.0\\.4(?:\\.[0-9]+)*$">>,[restart_new_emulator]},
+  {<<"^3\\.1$">>,[restart_new_emulator]},
+  {<<"^3\\.1\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]},
+  {<<"^3\\.1\\.1(?:\\.[0-9]+)*$">>,[restart_new_emulator]},
+  {<<"^3\\.1\\.2(?:\\.[0-9]+)*$">>,[restart_new_emulator]},
+  {<<"^3\\.2$">>,[restart_new_emulator]},
+  {<<"^3\\.2\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]},
+  {<<"^3\\.2\\.1(?:\\.[0-9]+)*$">>,[restart_new_emulator]}]}.
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_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/vsn.mk b/lib/sasl/vsn.mk
index 94b7f9dc56..c1f80752a7 100644
--- a/lib/sasl/vsn.mk
+++ b/lib/sasl/vsn.mk
@@ -1 +1 @@
-SASL_VSN = 3.2.1
+SASL_VSN = 3.3
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/ssh/doc/src/notes.xml b/lib/ssh/doc/src/notes.xml
index 1012c80fb1..0bc4baf5eb 100644
--- a/lib/ssh/doc/src/notes.xml
+++ b/lib/ssh/doc/src/notes.xml
@@ -30,6 +30,84 @@
     <file>notes.xml</file>
   </header>
 
+<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>
+      <list>
+        <item>
+          <p>
+	    Incompatibility with newer OpenSSH fixed. Previously
+	    versions 7.8 and later could cause Erlang SSH to exit.</p>
+          <p>
+	    Own Id: OTP-15413</p>
+        </item>
+        <item>
+          <p>
+	    The '<c>exec</c>' option for ssh daemons had wrong format
+	    in the documentation.</p>
+          <p>
+	    Own Id: OTP-15416</p>
+        </item>
+      </list>
+    </section>
+
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+          <p>
+	    Added public key methods ssh-ed25519 and ssh-ed448.</p>
+          <p>
+	    Requires OpenSSL 1.1.1 or higher as cryptolib under the
+	    OTP application <c>crypto</c>.</p>
+          <p>
+	    Own Id: OTP-15094 Aux Id: OTP-15419 </p>
+        </item>
+        <item>
+          <p>
+	    The SSH property tests are now adapted to the PropEr
+	    testing tool.</p>
+          <p>
+	    Own Id: OTP-15312</p>
+        </item>
+        <item>
+          <p>
+	    The term "user" was not documented in the SSH app. A new
+	    chapter with terminology is added to the User's Manual
+	    where the term "user" is defined.</p>
+          <p>
+	    A reference manual page about the module <c>ssh_file</c>
+	    is also added. This is the default callback module for
+	    user's keys, host keys etc.</p>
+          <p>
+	    Own Id: OTP-15314</p>
+        </item>
+        <item>
+          <p>
+	    Host and user key checking is made more robust.</p>
+          <p>
+	    Own Id: OTP-15424</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Ssh 4.7.1</title>
 
     <section><title>Improvements and New Features</title>
@@ -230,6 +308,21 @@
     </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>
diff --git a/lib/ssh/doc/src/ssh.xml b/lib/ssh/doc/src/ssh.xml
index fcf79969d3..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.
@@ -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/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_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 ae7b4cf3f2..2890d7fe5b 100644
--- a/lib/ssh/vsn.mk
+++ b/lib/ssh/vsn.mk
@@ -1,4 +1,4 @@
 #-*-makefile-*-   ; force emacs to enter makefile-mode
 
-SSH_VSN = 4.7.1
+SSH_VSN = 4.7.3
 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..7cf251d8f9 100644
--- a/lib/ssl/doc/src/Makefile
+++ b/lib/ssl/doc/src/Makefile
@@ -80,11 +80,16 @@ 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 +97,7 @@ DVIPS_FLAGS +=
 $(HTMLDIR)/%.gif: %.gif
 	$(INSTALL_DATA) $< $@
 
-docs: pdf html man
+docs: html pdf man
 
 $(TOP_PDF_FILE): $(XML_FILES)
 
@@ -105,6 +110,7 @@ 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 4baedf7431..82eb8ff700 100644
--- a/lib/ssl/doc/src/notes.xml
+++ b/lib/ssl/doc/src/notes.xml
@@ -27,6 +27,135 @@
   </header>
   <p>This document describes the changes made to the SSL application.</p>
 
+<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>
+      <list>
+        <item>
+          <p>
+	    PEM cache was not evicting expired entries due to due to
+	    timezone confusion.</p>
+          <p>
+	    Own Id: OTP-15368</p>
+        </item>
+        <item>
+          <p>
+	    Make sure an error is returned if a "transport_accept
+	    socket" is used in some other call than ssl:handshake* or
+	    ssl:controlling_process</p>
+          <p>
+	    Own Id: OTP-15384 Aux Id: ERL-756 </p>
+        </item>
+        <item>
+          <p>
+	    Fix timestamp handling in the PEM-cache could cause
+	    entries to not be invalidated at the correct time.</p>
+          <p>
+	    Own Id: OTP-15402</p>
+        </item>
+        <item>
+          <p>
+	    Extend check for undelivered data at closing, could under
+	    some circumstances fail to deliver all data that was
+	    actually received.</p>
+          <p>
+	    Own Id: OTP-15412 Aux Id: ERL-731 </p>
+        </item>
+        <item>
+          <p>
+	    Correct signature check for TLS-1.2 that allows different
+	    algorithms for signature of peer cert and peer cert key.
+	    Not all allowed combinations where accepted.</p>
+          <p>
+	    Own Id: OTP-15415 Aux Id: ERL-763 </p>
+        </item>
+        <item>
+          <p>
+	    Correct gen_statem return value, could cause
+	    renegotiation to fail.</p>
+          <p>
+	    Own Id: OTP-15418 Aux Id: ERL-770 </p>
+        </item>
+      </list>
+    </section>
+
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+          <p>
+	    Add engine support for RSA key exchange</p>
+          <p>
+	    Own Id: OTP-15420 Aux Id: ERIERL-268 </p>
+        </item>
+        <item>
+          <p>
+	    ssl now uses active n internally to boost performance.
+	    Old active once behavior can be restored by setting
+	    application variable see manual page for ssl application
+	    (man 6).</p>
+          <p>
+	    *** POTENTIAL INCOMPATIBILITY ***</p>
+          <p>
+	    Own Id: OTP-15449</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>SSL 9.0.3</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
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 ef99ace351..3f643f32e1 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>
@@ -37,291 +37,359 @@
       <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>| {log_level, atom()}</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>
+  <!--
+      ================================================================
+      =  Data types                                                  =
+      ================================================================
+  -->
 
-      <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>
+  <datatypes>
+    <datatype_title>Types used in SSL/TLS/DTLS</datatype_title>
 
-      <tag><c>host() =</c></tag>
-      <item><p><c>hostname() | ipaddress()</c></p></item>
-
-      <tag><c>hostname() =</c></tag>
-      <item><p><c>string() - DNS hostname</c></p></item>
+    
+    <datatype>
+      <name name="socket"/>
+    </datatype>
+    
+    <datatype>
+      <name name="sslsocket"/>
+      <desc>
+	<p>An opaque reference to the TLS/DTLS connection.</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>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_connect_option"/>
+    </datatype>
+    
+     <datatype>
+      <name name="socket_listen_option"/>
+    </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>
+    <datatype>
+      <name name="active_msgs"/>
+      <desc>
+      <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 as described above.</p>
+      </desc>
+    </datatype>
       
-      <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>
-
-       <tag><c>signature_scheme() =</c></tag>
-       <item>
-	 <p><c>rsa_pkcs1_sha256</c></p>
-	 <p><c>| rsa_pkcs1_sha384</c></p>
-	 <p><c>| rsa_pkcs1_sha512</c></p>
-	 <p><c>| ecdsa_secp256r1_sha256</c></p>
-	 <p><c>| ecdsa_secp384r1_sha384</c></p>
-	 <p><c>| ecdsa_secp521r1_sha512</c></p>
-	 <p><c>| rsa_pss_rsae_sha256</c></p>
-	 <p><c>| rsa_pss_rsae_sha384</c></p>
-	 <p><c>| rsa_pss_rsae_sha512</c></p>
-	 <p><c>| rsa_pss_pss_sha256</c></p>
-	 <p><c>| rsa_pss_pss_sha384</c></p>
-	 <p><c>| rsa_pss_pss_sha512</c></p>
-	 <p><c>| rsa_pkcs1_sha1</c></p>
-	 <p><c>| ecdsa_sha1</c></p>
-       </item>
-
-    </taglist>
-  </section>
-
-  <section>
-    <title>TLS/DTLS OPTION DESCRIPTIONS - COMMON for SERVER and CLIENT</title>
+    <datatype>
+      <name name="transport_option"/>
+      <desc>
+	<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. 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="path"/>
+     </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="legacy_version"/>
+     </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="signature_algs"/>
+     </datatype>
+
+     <datatype>
+      <name name="sign_algo"/>
+     </datatype>
+     
+     <datatype>
+       <name name="sign_scheme"/>
+     </datatype>
+     
+     <datatype>
+      <name name="key_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="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>
 
-    <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,
@@ -333,20 +401,21 @@ 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
@@ -396,10 +465,12 @@ 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>
@@ -410,15 +481,17 @@ 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>
 	
@@ -430,106 +503,104 @@ marker="public_key:public_key#pkix_path_validation-3">public_key:pkix_path_valid
 	  <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()) ->
@@ -551,20 +622,63 @@ 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. The level <c>debug</c> triggers verbose logging of TLS protocol
+      messages and logging of ignored alerts in DTLS.</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>
 
@@ -574,127 +688,166 @@ 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>
+      </desc>
+    </datatype>
+    
 
-    <taglist>
+    <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
@@ -725,206 +878,227 @@ 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>
-	<tag><marker id="signature_algs_cert"/><c>{signature_algs_cert, [signature_scheme()]}</c></tag>
-	<item>
-	  <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>
-	</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>
-      <p>Deprecated in OTP 22, use <seealso marker="#log_level">log_level</seealso> instead.</p>
-      </item>
-
-      <tag><marker id="log_level"/><c>{log_level, atom()}</c></tag>
-      <item><p>Specifies the log level for TLS/DTLS. It can take the following
-      values (ordered by increasing verbosity level): <c>emergency, alert, critical, error,
-      warning, notice, info, debug.</c></p>
-      <p>At verbosity level <c>notice</c> and above error reports are
-      displayed in TLS. The level <c>debug</c> triggers verbose logging of TLS protocol
-      messages and logging of ignored alerts in DTLS.</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
@@ -936,8 +1110,8 @@ 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_ciphers()</name>
       <fsummary>Returns a list of supported cipher suites.</fsummary>
       <type>
         <v>Type = erlang | openssl | all</v>
@@ -948,12 +1122,12 @@ 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
@@ -962,10 +1136,16 @@ 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>
@@ -973,7 +1153,7 @@ 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
@@ -985,61 +1165,68 @@ 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>Socket = <seealso marker="#type-socket"> socket() </seealso></v>
+	<v>Options = <seealso marker="#type-client_option"> [client_option()] </seealso></v>
+	<v>Timeout = timeout()</v>
+	<v>SslSocket =  <seealso marker="#type-sslsocket"> sslsocket() </seealso></v>
 	<v>Ext = hello_extensions()</v>
-	<v>Reason = term()</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> or <c>true</c> 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-client_option"> [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>
@@ -1061,14 +1248,19 @@ 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> or <c>true</c> 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>
@@ -1076,10 +1268,10 @@ 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>
@@ -1091,12 +1283,12 @@ 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>
@@ -1107,12 +1299,12 @@ 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>
@@ -1128,12 +1320,12 @@ 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>
@@ -1150,11 +1342,11 @@ 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
@@ -1165,7 +1357,7 @@ 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>
@@ -1176,11 +1368,11 @@ 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>
@@ -1190,13 +1382,13 @@ 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>
@@ -1207,31 +1399,36 @@ 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> or <c>true</c> 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>Socket = socket() |  <seealso marker="#type-sslsocket"> socket() </seealso> </v>
+	<v>SslSocket =  <seealso marker="#type-sslsocket"> sslsocket() </seealso> </v>
 	<v>Ext = hello_extensions()</v>
-	<v>SslOptions = [{handshake, hello| full} | ssl_option()]</v>
-        <v>Timeout = integer()</v>
-        <v>Reason = term()</v>
+	<v>Options = <seealso marker="#type-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>,
@@ -1243,7 +1440,8 @@ 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>
@@ -1257,14 +1455,20 @@ 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> or <c>true</c> 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>
@@ -1272,14 +1476,14 @@ 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>
@@ -1287,13 +1491,13 @@ 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-server_option"> [server_option()] </seealso></v>
+	<v>ListenSocket =  <seealso marker="#type-sslsocket"> sslsocket() </seealso></v>
       </type>
       <desc>
 	<p>Creates an SSL listen socket.</p>
@@ -1301,10 +1505,10 @@ 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>
@@ -1315,10 +1519,10 @@ 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>
@@ -1330,13 +1534,13 @@ 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>
@@ -1344,11 +1548,12 @@ 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
@@ -1360,10 +1565,10 @@ 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>
@@ -1380,14 +1585,14 @@ 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>
@@ -1407,10 +1612,10 @@ 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
@@ -1420,10 +1625,10 @@ 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>
@@ -1434,11 +1639,11 @@ 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
@@ -1447,7 +1652,7 @@ fun(srp, Username :: string(), UserState :: term()) ->
     </func>
 
     <func>
-      <name>set_log_level(Level) -> ok | {error, Reason}</name>
+      <name since="OTP 22.0">set_log_level(Level) -> ok | {error, Reason}</name>
       <fsummary>Sets log level for the SSL application.</fsummary>
       <type>
         <v>Level = atom()</v>
@@ -1458,10 +1663,10 @@ 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>
@@ -1476,13 +1681,13 @@ 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>
@@ -1491,14 +1696,14 @@ 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-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>
@@ -1507,13 +1712,13 @@ 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
@@ -1522,8 +1727,8 @@ 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>
@@ -1535,7 +1740,7 @@ 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>
@@ -1543,10 +1748,10 @@ 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>
@@ -1555,14 +1760,14 @@ 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>
@@ -1590,7 +1795,7 @@ 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_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_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/src/dtls_connection.erl b/lib/ssl/src/dtls_connection.erl
index 73885de6c1..d5460bae34 100644
--- a/lib/ssl/src/dtls_connection.erl
+++ b/lib/ssl/src/dtls_connection.erl
@@ -40,7 +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, 
@@ -81,7 +81,7 @@ 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
@@ -108,9 +108,11 @@ 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,
@@ -142,14 +144,14 @@ 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};
@@ -235,37 +237,44 @@ next_event(StateName, Record,
 	    {next_state, StateName, State0, [{next_event, internal, Alert} | Actions]}
     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) ->
+			   connection_env = #connection_env{negotiated_version = Version}} = State) ->
     try
 	case dtls_handshake:get_dtls_handshake(Version, Data, Buffers0) 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});
@@ -273,18 +282,20 @@ 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),
@@ -294,8 +305,8 @@ 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) ->
@@ -303,17 +314,17 @@ queue_handshake(Handshake0, #state{tls_handshake_history = Hist0,
     Hist = update_handshake_history(Handshake0, Handshake, Hist0),
     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) ->
     Handshake = dtls_handshake:encode_handshake(Handshake0, Version, Seq),
     Hist = update_handshake_history(Handshake0, Handshake, Hist0),
     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) -> 
@@ -325,11 +336,14 @@ queue_change_cipher(ChangeCipher, #state{flight_buffer = Flight,
 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{
@@ -353,9 +367,9 @@ 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,
+send_alert(Alert, #state{static_env = #static_env{socket = Socket,
+                                                  transport_cb = Transport},
+                         connection_env = #connection_env{negotiated_version = Version},
 			 connection_states = ConnectionStates0} = State0) ->
     {BinMsg, ConnectionStates} =
 	encode_alert(Alert, Version, ConnectionStates0),
@@ -407,42 +421,39 @@ 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).
 
@@ -455,8 +466,8 @@ 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(_, _, _) ->
@@ -468,16 +479,18 @@ 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),
@@ -488,49 +501,62 @@ 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},
+                                         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},
-                                                                       start_or_recv_from = From} = State) ->
+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},
+                                         handshake_env = HsEnv#handshake_env{hello = Hello}},    
      [{reply, From, {ok, Extensions}}]};     
-hello(internal, #client_hello{cookie = Cookie} = Hello, #state{role = server,
-							       transport_cb = Transport,
-							       socket = Socket,
+
+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) ->
+                                                                                     previous_cookie_secret := PSecret}
+                                                              } = State0) ->
     {ok, {IP, Port}} = dtls_socket:peername(Transport, Socket),
     case dtls_handshake:cookie(Secret, IP, Port, Hello) of
 	Cookie ->
@@ -545,11 +571,12 @@ hello(internal, #client_hello{cookie = Cookie} = Hello, #state{role = server,
             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);
@@ -595,10 +622,11 @@ 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) ->
@@ -638,10 +666,11 @@ 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);
@@ -657,33 +686,45 @@ 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),
@@ -738,33 +779,44 @@ 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,
 	   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) ->
@@ -782,7 +834,7 @@ next_dtls_record(Data, StateName, #state{protocol_buffers = #protocol_buffers{
 
 acceptable_record_versions(hello, _) ->
     [dtls_record:protocol_version(Vsn) || Vsn <- ?ALL_DATAGRAM_SUPPORTED_VERSIONS];
-acceptable_record_versions(_, #state{negotiated_version = Version}) ->
+acceptable_record_versions(_, #state{connection_env = #connection_env{negotiated_version = Version}}) ->
     [Version].
 
 dtls_handshake_events(Packets) ->
@@ -801,19 +853,22 @@ 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,
@@ -828,11 +883,12 @@ 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)
@@ -841,20 +897,20 @@ 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
@@ -872,7 +928,7 @@ 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
@@ -890,9 +946,10 @@ 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}.
@@ -906,8 +963,8 @@ 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} ->
@@ -932,7 +989,7 @@ 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
@@ -943,7 +1000,7 @@ 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
@@ -954,7 +1011,7 @@ 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
@@ -997,18 +1054,18 @@ 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 -> 
@@ -1016,11 +1073,11 @@ new_timeout(N) when N =< 30 ->
 new_timeout(_) -> 
     60.
 
-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) ->
     %% TODO remove hardcoded Max size
     {Encoded, ConnectionStates} =
@@ -1028,12 +1085,12 @@ send_handshake_flight(#state{socket = Socket,
     send(Transport, Socket, 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) ->      
     {HsBefore, ConnectionStates1} =
 	encode_handshake_flight(lists:reverse(Flight0), Version, 1400, Epoch, ConnectionStates0),
@@ -1042,12 +1099,12 @@ send_handshake_flight(#state{socket = Socket,
     send(Transport, Socket, [HsBefore, 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) ->      
     {HsBefore, ConnectionStates1} =
 	encode_handshake_flight(lists:reverse(Flight0), Version, 1400, Epoch-1, ConnectionStates0),
@@ -1058,12 +1115,12 @@ send_handshake_flight(#state{socket = Socket,
     send(Transport, Socket, [HsBefore, EncChangeCipher, 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) ->
     {EncChangeCipher, ConnectionStates1} = 
 	encode_change_cipher(ChangeCipher, Version, Epoch-1, ConnectionStates0),
@@ -1116,16 +1173,17 @@ 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,
+                                                      protocol_cb = Connection,
+                                                      transport_cb = Transport},
+                             connection_env = #connection_env{negotiated_version = Version},
+                             handshake_env = HsEnv,
                              connection_states = ConnectionStates0,
                              ssl_options = #ssl_options{renegotiate_at = RenegotiateAt}} = 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} =
@@ -1153,3 +1211,4 @@ 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 3dbda2c91b..8e749e65b8 100644
--- a/lib/ssl/src/dtls_handshake.erl
+++ b/lib/ssl/src/dtls_handshake.erl
@@ -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{}.
 %%
@@ -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
@@ -151,7 +151,7 @@ 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{}) ->
                                 {[dtls_handshake()], #protocol_buffers{}}.                
 %%
 %% Description:  Given buffered and new data from dtls_record, collects
@@ -214,8 +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 ->
@@ -224,17 +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},
@@ -343,8 +340,9 @@ decode_handshake(Version, ?CLIENT_HELLO, <<?UINT24(_), ?UINT16(_),
 					    ?BYTE(Cm_length), Comp_methods:Cm_length/binary,
 					    Extensions/binary>>) ->
     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, client),
+    DecodedExtensions = ssl_handshake:decode_hello_extensions(Exts, TLSVersion, LegacyVersion, client),
 
     #client_hello{
        client_version = {Major,Minor},
diff --git a/lib/ssl/src/dtls_handshake.hrl b/lib/ssl/src/dtls_handshake.hrl
index a16489bbd1..dab4038762 100644
--- a/lib/ssl/src/dtls_handshake.hrl
+++ b/lib/ssl/src/dtls_handshake.hrl
@@ -27,6 +27,7 @@
 -define(dtls_handshake, true).
 
 -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}).
diff --git a/lib/ssl/src/dtls_packet_demux.erl b/lib/ssl/src/dtls_packet_demux.erl
index e03a4e9cb9..afcd4af000 100644
--- a/lib/ssl/src/dtls_packet_demux.erl
+++ b/lib/ssl/src/dtls_packet_demux.erl
@@ -145,11 +145,11 @@ 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]),
     ?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]),
     ?LOG_NOTICE(Report),
     {noreply, State#state{close=true}};
diff --git a/lib/ssl/src/dtls_record.erl b/lib/ssl/src/dtls_record.erl
index b7346d3ec8..dd33edfd77 100644
--- a/lib/ssl/src/dtls_record.erl
+++ b/lib/ssl/src/dtls_record.erl
@@ -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
@@ -163,7 +162,7 @@ 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()) -> {[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
@@ -188,7 +187,7 @@ 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 +197,7 @@ 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 +209,7 @@ 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 +218,7 @@ 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 +247,8 @@ 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 +262,7 @@ 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 +276,7 @@ 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 +287,7 @@ 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 +298,7 @@ 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 +314,7 @@ 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 +326,7 @@ is_higher(_, _) ->
     false.
 
 %%--------------------------------------------------------------------
--spec supported_protocol_versions() -> [dtls_version()].
+-spec supported_protocol_versions() -> [ssl_record:ssl_version()].
 %%
 %% Description: Protocol versions supported
 %%--------------------------------------------------------------------
@@ -370,7 +369,7 @@ 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 +377,7 @@ 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} ->
diff --git a/lib/ssl/src/inet_tls_dist.erl b/lib/ssl/src/inet_tls_dist.erl
index ce771343fe..e7fab7ebc5 100644
--- a/lib/ssl/src/inet_tls_dist.erl
+++ b/lib/ssl/src/inet_tls_dist.erl
@@ -481,22 +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(),
@@ -521,6 +524,8 @@ 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),
@@ -565,7 +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}
diff --git a/lib/ssl/src/ssl.erl b/lib/ssl/src/ssl.erl
index 2c3f8bc20f..980b773a84 100644
--- a/lib/ssl/src/ssl.erl
+++ b/lib/ssl/src/ssl.erl
@@ -62,16 +62,341 @@
 -deprecated({ssl_accept, 2, eventually}).
 -deprecated({ssl_accept, 3, eventually}).
 
+-export_type([socket/0,
+              sslsocket/0,
+              socket_option/0,
+              tls_client_option/0,
+              tls_option/0,
+              tls_server_option/0,
+              active_msgs/0,
+              erl_cipher_suite/0,
+              protocol_version/0,
+              dtls_version/0,
+              tls_version/0,
+              prf_random/0, 
+              hello_extensions/0,
+              error_alert/0,
+              session_id/0, 
+              path/0, 
+              hostname/0,
+              host/0,
+              prf/0, 
+              srp_param_type/0,
+              cipher_filters/0,
+              ssl_imp/0,
+              private_key_type/0,
+              cipher/0,
+              hash/0,
+              key/0,
+              key_algo/0,
+              sign_algo/0
+             ]).
+%% -------------------------------------------------------------------------------------------------------
+-type socket()                   :: gen_tcp:socket().
+-type socket_option()    ::  socket_connect_option() | socket_listen_option(). 
+-type socket_connect_option()    :: gen_tcp:connect_option() | gen_udp:option().
+-type socket_listen_option()     :: gen_tcp:listen_option() | gen_udp:option().
+-opaque sslsocket()              :: #sslsocket{}.
+-type tls_option()                :: tls_client_option() | tls_server_option().
+-type tls_client_option()            :: client_option() | socket_connect_option() |  transport_option().
+-type tls_server_option()            :: server_option() | socket_listen_option() | transport_option().
+-type active_msgs()  :: {ssl, sslsocket(), Data::binary() | list()} | {ssl_closed, sslsocket()} |
+                        {ssl_error, sslsocket(), Reason::term()}.
+-type transport_option() :: {cb_info, {CallbackModule::atom(), DataTag::atom(),
+				       ClosedTag::atom(), ErrTag::atom()}}.
+-type path()         :: file:filename().
+-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 | 'tlsv1.1' | 'tlsv1.2' | 'tlsv1.3' | legacy_version().
+-type dtls_version() :: 'dtlsv1' | 'dtlsv1.2'.
+-type legacy_version() :: sslv3.
+-type verify_type()  :: verify_none | verify_peer.
+-type cipher()            :: aes_128_cbc |
+                             aes_256_cbc |
+                             aes_128_gcm |
+                             aes_256_gcm |
+                             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 key_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 prf()               :: hash() | default_prf.
+-type erl_cipher_suite()  :: #{key_exchange := key_algo(),
+                               cipher := cipher(),
+                               mac    := hash() | aead,
+                               prf    := hash() | default_prf %% Old cipher suites, version dependent
+                              }.  
+
+-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()}. 
+
+-type protocol()                 :: tls | dtls.
+-type handshake_completion()     ::  hello | full.
+-type cert()                     :: public_key:der_encoded().
+-type cert_pem()                 :: ssl:path().
+-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()                  :: ssl:path().
+-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((key_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()     :: ssl:session_id().
+-type client_reuse_sessions()    :: boolean() | save.
+-type client_cacerts()           :: [public_key:der_encoded()].
+-type client_cafile()            :: ssl:path().
+-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 :: ssl:hostname() | disable. 
+-type client_signature_algs()    :: signature_algs().
+-type fallback()                 :: boolean().
+
+%% -------------------------------------------------------------------------------------------------------
+
+-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()            :: ssl:path().
+-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()                  :: ssl:path().
+-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()                :: [{ssl:hostname(), [server_option() | common_option()]}].
+-type sni_fun()                  :: fun().
+-type honor_cipher_order()       :: boolean().
+-type honor_ecc_order()          :: boolean().
+-type client_renegotiation()     :: boolean().
+%% -------------------------------------------------------------------------------------------------------
+
+-type ssl_imp()      :: new | old.
+
+
+-type prf_random() :: client_random | server_random.
+
+-type private_key_type() :: rsa | %% Backwards compatibility
+                            dsa | %% Backwards compatibility
+                            'RSAPrivateKey' |
+                            'DSAPrivateKey' |
+                            'ECPrivateKey' |
+                            'PrivateKeyInfo'.
+
+-type hello_extensions()  :: #{signature_algs => sign_algo()}. %% TODO
+%% -------------------------------------------------------------------------------------------------------
 %%--------------------------------------------------------------------
--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, _} ->
@@ -88,21 +413,17 @@ 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,
@@ -119,6 +440,9 @@ 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),
@@ -134,7 +458,7 @@ 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.
@@ -150,16 +474,16 @@ 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) ->
@@ -171,25 +495,25 @@ 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) ->
@@ -200,22 +524,19 @@ 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);
@@ -229,6 +550,8 @@ handshake(#sslsocket{} = Socket, Timeout) when  (is_integer(Timeout) andalso Tim
 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);
@@ -271,7 +594,7 @@ 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()}.
 %%
 %%
@@ -280,7 +603,7 @@ 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()}.
 %%
 %%
@@ -341,13 +664,14 @@ send(#sslsocket{pid = {ListenSocket, #config{transport_info={Transport, _, _, _}
     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);
@@ -470,9 +794,9 @@ 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
 %%--------------------------------------------------------------------
@@ -488,9 +812,10 @@ 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()] | [ssl_cipher_format: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() ] |  [ssl_cipher_format: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.
@@ -507,10 +832,10 @@ 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
@@ -525,10 +850,10 @@ 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.
@@ -550,8 +875,8 @@ 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.
@@ -747,7 +1072,7 @@ 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}].
@@ -807,8 +1132,8 @@ 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;
@@ -837,7 +1162,7 @@ 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.
 %%--------------------------------------------------------------------
@@ -942,15 +1267,12 @@ 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),
     
     [HighestVersion|_] = Versions =
         case handle_option(versions, Opts, []) of
@@ -1014,9 +1336,8 @@ handle_options(Opts0, Role, Host) ->
                              Opts,
                              undefined),  %% Do not send by default
                            tls_version(HighestVersion)),
-		    %% Server side option
-		    reuse_session = handle_option(reuse_session, Opts, ReuseSessionFun),
-		    reuse_sessions = handle_option(reuse_sessions, Opts, true),
+                    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), 
@@ -1078,6 +1399,7 @@ handle_options(Opts0, Role, Host) ->
 		  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),
@@ -1211,11 +1533,16 @@ 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) ->
@@ -1374,6 +1701,26 @@ handle_signature_algorithms_option(Value, Version) when is_list(Value)
 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]) ->
diff --git a/lib/ssl/src/ssl_alert.erl b/lib/ssl/src/ssl_alert.erl
index ed8156e0be..e17476f33b 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().
@@ -185,3 +187,70 @@ 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(?USER_CANCELED) ->
+    user_canceled;
+description_atom(?NO_RENEGOTIATION) ->
+    no_renegotiation;
+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(?INAPPROPRIATE_FALLBACK) ->
+    inappropriate_fallback;
+description_atom(?NO_APPLICATION_PROTOCOL) ->
+    no_application_protocol;
+description_atom(_) ->
+    'unsupported/unkonwn_alert'.
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_cipher.erl b/lib/ssl/src/ssl_cipher.erl
index c4b8e2172a..873572e231 100644
--- a/lib/ssl/src/ssl_cipher.erl
+++ b/lib/ssl/src/ssl_cipher.erl
@@ -34,7 +34,7 @@
 -include("tls_handshake_1_3.hrl").
 -include_lib("public_key/include/public_key.hrl").
 
--export([security_parameters/2, security_parameters/3, security_parameters_1_3/3,
+-export([security_parameters/2, security_parameters/3, security_parameters_1_3/2,
 	 cipher_init/3, nonce_seed/2, decipher/6, cipher/5, aead_encrypt/5, 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, 
@@ -44,10 +44,11 @@
 	 hash_algorithm/1, sign_algorithm/1, is_acceptable_hash/2, is_fallback/1,
 	 random_bytes/1, calc_mac_hash/4,
          is_stream_ciphersuite/1, signature_scheme/1,
-         scheme_to_components/1, hash_size/1]).
+         scheme_to_components/1, hash_size/1, effective_key_bits/1,
+         key_material/1]).
 
 %% RFC 8446 TLS 1.3
--export([generate_client_shares/1, generate_server_share/1]).
+-export([generate_client_shares/1, generate_server_share/1, add_zero_padding/2]).
 
 -compile(inline).
 
@@ -88,23 +89,14 @@ security_parameters(Version, CipherSuite, SecParams) ->
       prf_algorithm = prf_algorithm(PrfHashAlg, Version),
       hash_size = hash_size(Hash)}.
 
-security_parameters_1_3(SecParams, ClientRandom, CipherSuite) ->
-     #{cipher := Cipher,
-       mac := Hash,
-       prf := PrfHashAlg} = ssl_cipher_format:suite_definition(CipherSuite),
+security_parameters_1_3(SecParams, CipherSuite) ->
+     #{cipher := Cipher, prf := PrfHashAlg} =
+        ssl_cipher_format:suite_definition(CipherSuite),
     SecParams#security_parameters{
-      client_random = ClientRandom,
       cipher_suite = CipherSuite,
       bulk_cipher_algorithm = bulk_cipher_algorithm(Cipher),
-      cipher_type = type(Cipher),
-      key_size = effective_key_bits(Cipher),
-      expanded_key_material_length = expanded_key_material(Cipher),
-      key_material_length = key_material(Cipher),
-      iv_size = iv_size(Cipher),
-      mac_algorithm = mac_algorithm(Hash),
-      prf_algorithm =prf_algorithm(PrfHashAlg, {3,4}),
-      hash_size = hash_size(Hash),
-      compression_algorithm = 0}.
+      prf_algorithm = PrfHashAlg,  %% HKDF hash algorithm
+      cipher_type = ?AEAD}.
 
 %%--------------------------------------------------------------------
 -spec cipher_init(cipher_enum(), binary(), binary()) -> #cipher_state{}.
@@ -509,8 +501,8 @@ 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
 %%-------------------------------------------------------------------	
@@ -536,8 +528,8 @@ 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.
 %%-------------------------------------------------------------------
@@ -578,7 +570,8 @@ 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 ->
@@ -621,7 +614,7 @@ 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) ->
@@ -690,10 +683,9 @@ hash_size(sha) ->
 hash_size(sha256) ->
     32;
 hash_size(sha384) ->
-    48.
-%% Uncomment when adding cipher suite that needs it
-%hash_size(sha512) ->
-%    64.
+    48;
+hash_size(sha512) ->
+    64.
 
 %%--------------------------------------------------------------------
 %%% Internal functions
@@ -897,8 +889,8 @@ 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(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};
@@ -972,7 +964,7 @@ is_correct_padding(GenBlockCipher, {3, 1}, false) ->
 is_correct_padding(#generic_block_cipher{padding_length = Len,
 					 padding = Padding}, _, _) ->
     Len == byte_size(Padding) andalso
-		list_to_binary(lists:duplicate(Len, Len)) == Padding.
+        binary:copy(?byte(Len), Len) == Padding.
 
 get_padding(Length, BlockSize) ->
     get_padding_aux(BlockSize, Length rem BlockSize).
@@ -981,7 +973,7 @@ get_padding_aux(_, 0) ->
     {0, <<>>};
 get_padding_aux(BlockSize, PadLength) ->
     N = BlockSize - PadLength,
-    {N, list_to_binary(lists:duplicate(N, N))}.
+    {N, binary:copy(?byte(N), N)}.
 
 random_iv(IV) ->
     IVSz = byte_size(IV),
@@ -1240,5 +1232,24 @@ 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 5891f3a7cc..00822ad9de 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       
diff --git a/lib/ssl/src/ssl_cipher_format.erl b/lib/ssl/src/ssl_cipher_format.erl
index 6e480eef45..f75daaad22 100644
--- a/lib/ssl/src/ssl_cipher_format.erl
+++ b/lib/ssl/src/ssl_cipher_format.erl
@@ -25,33 +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 |
-                             any. %% TLS 1.3
--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_key_algo()          :: null | ssl:key_algo().
+-type internal_erl_cipher_suite()  :: #{key_exchange := internal_key_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:key_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:key_algo(), internal_cipher(), internal_hash(), 
+                                 internal_hash() | default_prf}. 
 -type cipher_suite()      :: binary().
 -type openssl_cipher_suite()  :: string().
 
@@ -60,7 +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.
 %%--------------------------------------------------------------------
@@ -90,7 +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.
@@ -845,7 +837,7 @@ suite_definition(?TLS_CHACHA20_POLY1305_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).
@@ -862,7 +854,7 @@ 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.
 %%--------------------------------------------------------------------
@@ -1663,7 +1655,7 @@ openssl_suite("TLS_CHACHA20_POLY1305_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
 %%-------------------------------------------------------------------
diff --git a/lib/ssl/src/ssl_connection.erl b/lib/ssl/src/ssl_connection.erl
index 5d5fd6e450..08d2fae925 100644
--- a/lib/ssl/src/ssl_connection.erl
+++ b/lib/ssl/src/ssl_connection.erl
@@ -39,9 +39,9 @@
 
 %% 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,
@@ -52,7 +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
@@ -78,7 +78,7 @@
 %%====================================================================
 %%--------------------------------------------------------------------
 -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
@@ -144,7 +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
@@ -200,10 +200,6 @@ socket_control(dtls_connection = Connection, {_, Socket}, [Pid|_] = Pids, Transp
 	    {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
@@ -336,8 +332,8 @@ 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)
@@ -352,79 +348,96 @@ handle_own_alert(Alert, _, StateName,
     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_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);
+    {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) ->
+	     #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) ->
+	     #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_level, Role,
-              Connection:protocol_name(), StateName,
-              Alert#alert{role = opposite_role(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) ->
+	     #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)}),
@@ -433,104 +446,125 @@ handle_alert(#alert{level = ?WARNING} = Alert, StateName,
 %%====================================================================
 %% Data handling
 %%====================================================================
-
-passive_receive(State0 = #state{user_data_buffer = Buffer}, StateName, Connection) -> 
+passive_receive(State0 = #state{user_data_buffer = Buffer}, StateName, Connection, StartTimerAction) -> 
     case Buffer of
 	<<>> ->
 	    {Record, State} = Connection:next_record(State0),
-	    Connection:next_event(StateName, Record, State);
+	    Connection:next_event(StateName, Record, State, 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 = Buffer0,
+     connection_env = #connection_env{erl_dist_handle = DHandle}} = State) ->
+    %%
+    Buffer = bincat(Buffer0, Data),
+    case DHandle of
+        undefined ->
+            #state{
+               socket_options = SocketOpts,
+               bytes_to_read = BytesToRead,
+               start_or_recv_from = RecvFrom} = State,
+            read_application_data(
+              Buffer, State, SocketOpts, RecvFrom, BytesToRead);
+        _ ->
+            try read_application_dist_data(Buffer, State, DHandle)
+            catch error:_ ->
+                    {stop,disconnect,
+                     State#state{
+                       user_data_buffer = Buffer,
+                       bytes_to_read = undefined}}
+            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 =:= <<>> ->
-            %% 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)
+read_application_dist_data(Buffer, State, DHandle) ->
+    case Buffer of
+        <<Size:32,Data:Size/binary>> ->
+            erlang:dist_ctrl_put_data(DHandle, Data),
+            {no_record,
+             State#state{
+               user_data_buffer = <<>>,
+               bytes_to_read = undefined}};
+        <<Size:32,Data:Size/binary,Rest/binary>> ->
+            erlang:dist_ctrl_put_data(DHandle, Data),
+            read_application_dist_data(Rest, State, DHandle);
+        _ ->
+            {no_record,
+             State#state{
+               user_data_buffer = Buffer,
+               bytes_to_read = undefined}}
+    end.
+
+read_application_data(
+  Buffer0, State, SocketOpts0, RecvFrom, BytesToRead) ->
+    %%
+    case get_data(SocketOpts0, BytesToRead, Buffer0) of
+	{ok, ClientData, Buffer} -> % Send 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,
+                  ClientData, 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{
+                       user_data_buffer = Buffer,
+                       start_or_recv_from = undefined,
+                       bytes_to_read = undefined,
+                       socket_options = SocketOpts
+                      }};
+                true -> %% We have more data
+                           read_application_data(
+                             Buffer, State, SocketOpts,
+                             undefined, undefined)
+            end;
+        {more, Buffer} -> % no reply, we need more data
+            {no_record, State#state{user_data_buffer = Buffer}};
+        {passive, Buffer} ->
+            {no_record, State#state{user_data_buffer = Buffer}};
+        {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,
+            deliver_packet_error(
+              Connection:pids(State), Transport, Socket, SocketOpts0,
+              Buffer0, Pid, RecvFrom, Tracker, Connection),
+            {stop, {shutdown, normal}, State}
     end.
 
-merge_dist_data(<<>>, ClientData) ->
-    ClientData;
-merge_dist_data(DistBuff, <<>>) ->
-    DistBuff;
-merge_dist_data(DistBuff, ClientData) ->
-    [DistBuff, ClientData].
 %%====================================================================
 %% Help functions for tls|dtls_connection.erl
 %%====================================================================
@@ -543,8 +577,8 @@ 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),
     
@@ -557,12 +591,12 @@ 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 ->
@@ -576,10 +610,9 @@ 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, 
@@ -591,24 +624,19 @@ 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
@@ -621,10 +649,11 @@ 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),
@@ -633,7 +662,7 @@ 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);
@@ -649,7 +678,7 @@ 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}}]}.
 
@@ -668,20 +697,18 @@ 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]}.
 
@@ -694,60 +721,63 @@ 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) ->
@@ -765,32 +795,34 @@ 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
@@ -801,114 +833,132 @@ 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} ->
@@ -919,11 +969,11 @@ 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} ->
@@ -935,14 +985,15 @@ 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)
@@ -965,69 +1016,72 @@ 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} = State0, Connection) ->
+    {Record, State} = 
+	Connection:next_record(State0),
+    Connection:next_event(?FUNCTION_NAME, 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).
 
@@ -1037,15 +1091,17 @@ 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}}]); 
@@ -1056,35 +1112,36 @@ 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).
 
@@ -1093,22 +1150,6 @@ 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).
 
@@ -1117,47 +1158,45 @@ 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}),
     handle_own_alert(Alert, Version, StateName, State).
@@ -1165,47 +1204,41 @@ handle_common_event(_Type, Msg, StateName, #state{negotiated_version = Version}
 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 = 
@@ -1214,26 +1247,25 @@ 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},
+                   socket_options = Opts1
+                  } = State0, Connection) ->
     {Reply, Opts} = set_socket_opts(Connection, Transport, Socket, Opts0, Opts1, []),
     State = State0#state{socket_options = Opts},
     handle_active_option(Opts#socket_options.active, StateName, From, Reply, State);
@@ -1247,7 +1279,7 @@ handle_call(get_sslsocket, From, _StateName, State, Connection) ->
 
 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,
@@ -1274,62 +1306,51 @@ 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]),
     ?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(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{socket = Socket, error_tag = Tag} = State) ->
+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}]),
     ?LOG_NOTICE(Report),
     {next_state, StateName, State}.
@@ -1337,7 +1358,7 @@ handle_info(Msg, StateName, #state{socket = Socket, error_tag = Tag} = 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
@@ -1346,14 +1367,15 @@ 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) ->
@@ -1361,23 +1383,27 @@ 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).
@@ -1396,14 +1422,9 @@ 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}
 		       }}]}].
@@ -1411,16 +1432,16 @@ 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),
@@ -1448,7 +1469,8 @@ security_info(#state{connection_states = ConnectionStates}) ->
 
 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,
                        ssl_options = #ssl_options{versions = [HighestVersion|_]}}
@@ -1461,8 +1483,8 @@ do_server_hello(Type, #{next_protocol_negotiation := NextProtocols} =
 	ssl_handshake:server_hello(SessId, ssl:tls_version(Version),
                                    ConnectionStates1, ServerHelloExt),
     State = server_hello(ServerHello,
-			 State1#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);
@@ -1527,8 +1549,8 @@ override_server_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),
@@ -1544,7 +1566,7 @@ 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
@@ -1561,19 +1583,20 @@ 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).
@@ -1581,27 +1604,20 @@ 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),
@@ -1609,16 +1625,17 @@ 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 ->
@@ -1629,7 +1646,7 @@ 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{} ->
@@ -1654,7 +1671,9 @@ 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.
@@ -1675,14 +1694,15 @@ 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,
@@ -1692,8 +1712,8 @@ 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) ->
@@ -1701,7 +1721,7 @@ 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) ->
@@ -1709,28 +1729,29 @@ 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{} ->
@@ -1739,18 +1760,19 @@ 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),
@@ -1760,22 +1782,26 @@ 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} = 
@@ -1787,18 +1813,19 @@ 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,
@@ -1807,15 +1834,16 @@ 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} =
@@ -1828,15 +1856,16 @@ 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} =
@@ -1849,17 +1878,19 @@ 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),
@@ -1871,17 +1902,18 @@ 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{} ->
@@ -1898,82 +1930,86 @@ 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).
 
@@ -2010,18 +2046,24 @@ 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),
@@ -2038,7 +2080,7 @@ 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) ->
@@ -2065,27 +2107,29 @@ 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}).
@@ -2101,64 +2145,71 @@ 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
@@ -2218,7 +2269,7 @@ 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, 
@@ -2227,15 +2278,15 @@ 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.
@@ -2376,18 +2427,18 @@ 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 ->
-    %% Certs provided as DER directly cannot be shared
+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 ->
@@ -2396,7 +2447,7 @@ 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 ->
@@ -2406,42 +2457,54 @@ 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) ->
@@ -2450,19 +2513,21 @@ 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
@@ -2519,8 +2584,8 @@ 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 = StateName0, To, Reply, #state{static_env = #static_env{protocol_cb = Connection},
+                                                                   user_data_buffer = <<>>} = State0) ->
     case Connection:next_event(StateName0, no_record, State0) of
 	{next_state, StateName, State} ->
 	    hibernate_after(StateName, State, [{reply, To, Reply}]);
@@ -2534,7 +2599,8 @@ handle_active_option(_, StateName, To, Reply, #state{user_data_buffer = <<>>} =
     {next_state, StateName, State, [{reply, To, Reply}]};
 
 %% user_data_buffer =/= <<>>
-handle_active_option(_, StateName0, To, Reply, #state{protocol_cb = Connection} = State0) -> 
+handle_active_option(_, StateName0, To, Reply,
+                     #state{static_env = #static_env{protocol_cb = Connection}} = State0) ->
     case read_application_data(<<>>, State0) of
 	{stop, _, _} = Stop ->
 	    Stop;
@@ -2596,21 +2662,28 @@ 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};
@@ -2715,7 +2788,9 @@ 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 ->
@@ -2729,19 +2804,21 @@ 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) ->
@@ -2765,13 +2842,10 @@ new_emulated([], 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.
+-compile({inline, [bincat/2]}).
+bincat(<<>>, B) ->
+    B;
+bincat(A, <<>>) ->
+    A;
+bincat(A, B) ->
+    <<A/binary, B/binary>>.
diff --git a/lib/ssl/src/ssl_connection.hrl b/lib/ssl/src/ssl_connection.hrl
index 91467e9b26..f2864e5f33 100644
--- a/lib/ssl/src/ssl_connection.hrl
+++ b/lib/ssl/src/ssl_connection.hrl
@@ -33,75 +33,150 @@
 -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
+                     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:key_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(),
-          key_share
-	 }).
+                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() | 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_handshake.erl b/lib/ssl/src/ssl_handshake.erl
index 417e5d9eb6..16b5b34a3e 100644
--- a/lib/ssl/src/ssl_handshake.erl
+++ b/lib/ssl/src/ssl_handshake.erl
@@ -61,7 +61,7 @@
 -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_vector/1, decode_hello_extensions/3, decode_extensions/3,
+-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
 	]).
@@ -592,7 +592,7 @@ encode_extensions(Exts) ->
     encode_extensions(Exts, <<>>).
     
 encode_extensions([], <<>>) ->
-    <<>>;
+    <<?UINT16(0)>>;
 encode_extensions([], Acc) ->
     Size = byte_size(Acc),
     <<?UINT16(Size), Acc/binary>>;
@@ -639,7 +639,7 @@ encode_extensions([#ec_point_formats{ec_point_format_list = ECPointFormats} | Re
 				 ?UINT16(Len), ?BYTE(ListLen), ECPointFormatList/binary, Acc/binary>>);
 encode_extensions([#srp{username = UserName} | Rest], Acc) ->
     SRPLen = byte_size(UserName),
-    Len = SRPLen + 2,
+    Len = SRPLen + 1,
     encode_extensions(Rest, <<?UINT16(?SRP_EXT), ?UINT16(Len), ?BYTE(SRPLen),
 				    UserName/binary, Acc/binary>>);
 encode_extensions([#hash_sign_algos{hash_sign_algos = HashSignAlgos} | Rest], Acc) ->
@@ -680,9 +680,9 @@ encode_extensions([#sni{hostname = Hostname} | Rest], Acc) ->
 encode_extensions([#client_hello_versions{versions = Versions0} | Rest], Acc) ->
     Versions = encode_versions(Versions0),
     VerLen = byte_size(Versions),
-    Len = VerLen + 2,
+    Len = VerLen + 1,
     encode_extensions(Rest, <<?UINT16(?SUPPORTED_VERSIONS_EXT),
-                              ?UINT16(Len), ?UINT16(VerLen), Versions/binary, Acc/binary>>);
+                              ?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
@@ -745,8 +745,7 @@ decode_handshake(Version, ?SERVER_HELLO, <<?BYTE(Major), ?BYTE(Minor), Random:32
 		       ?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, Version, server_hello),
+    HelloExtensions = decode_hello_extensions(Extensions, Version, {Major, Minor}, server_hello),
 
     #server_hello{
        server_version = {Major,Minor},
@@ -803,11 +802,12 @@ decode_vector(<<?UINT16(Len), Vector:Len/binary>>) ->
     Vector.
 
 %%--------------------------------------------------------------------
--spec decode_hello_extensions(binary(), ssl_record:ssl_version(), atom()) -> map().
+-spec decode_hello_extensions(binary(), ssl_record:ssl_version(),
+                              ssl_record:ssl_version(), atom()) -> map().
 %%
 %% Description: Decodes TLS hello extensions
 %%--------------------------------------------------------------------
-decode_hello_extensions(Extensions, Version, MessageType0) ->
+decode_hello_extensions(Extensions, LocalVersion, LegacyVersion, MessageType0) ->
     %% Convert legacy atoms
     MessageType =
         case MessageType0 of
@@ -815,6 +815,13 @@ decode_hello_extensions(Extensions, Version, MessageType0) ->
             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)).
 
 %%--------------------------------------------------------------------
@@ -826,7 +833,7 @@ 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:key_algo(), ssl_record:ssl_version()) ->
 			       #server_key_params{}.
 %%
 %% Description: Decode server_key data and return appropriate type
@@ -835,7 +842,7 @@ 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:key_algo(), ssl_record:ssl_version()) ->
 			    #encrypted_premaster_secret{}
 			    | #client_diffie_hellman_public{}
 			    | #client_ec_diffie_hellman_public{}
@@ -1167,7 +1174,12 @@ kse_remove_private_key(#key_share_entry{
 
 signature_algs_ext(undefined) ->
     undefined;
-signature_algs_ext(SignatureSchemes) ->
+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) ->
@@ -1191,7 +1203,8 @@ handle_client_hello_extensions(RecordCB, Random, ClientCipherSuites,
     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))
+                                   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,
@@ -1199,13 +1212,9 @@ handle_client_hello_extensions(RecordCB, Random, ClientCipherSuites,
     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#{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),
@@ -1219,7 +1228,8 @@ handle_server_hello_extensions(RecordCB, Random, CipherSuite, Compression,
 			       #ssl_options{secure_renegotiate = SecureRenegotation,
 					    next_protocol_selector = NextProtoSelector},
 			       ConnectionStates0, Renegotiation) ->
-    ConnectionStates = handle_renegotiation_extension(client, RecordCB, Version,  maps:get(renegotiation_info, Exts, undefined), Random, 
+    ConnectionStates = handle_renegotiation_extension(client, RecordCB, Version,  
+                                                      maps:get(renegotiation_info, Exts, undefined), Random, 
 						      CipherSuite, undefined,
 						      Compression, ConnectionStates0,
 						      Renegotiation, SecureRenegotation),
@@ -1234,12 +1244,8 @@ handle_server_hello_extensions(RecordCB, Random, CipherSuite, Compression,
             {ConnectionStates, alpn, Protocol};
         undefined ->
             NextProtocolNegotiation = maps:get(next_protocol_negotiation, Exts, undefined),
-            case handle_next_protocol(NextProtocolNegotiation, NextProtoSelector, Renegotiation) of
-                #alert{} = Alert ->
-                    Alert;
-                Protocol ->
-                    {ConnectionStates, npn, Protocol}
-            end;
+            Protocol = handle_next_protocol(NextProtocolNegotiation, NextProtoSelector, Renegotiation),
+            {ConnectionStates, npn, Protocol};
         {error, Reason} ->
             ?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, Reason);
         [] ->
@@ -2201,6 +2207,47 @@ 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)).
 
+%% 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;
 decode_extensions(<<?UINT16(?ALPN_EXT), ?UINT16(ExtLen), ?UINT16(Len),
@@ -2229,7 +2276,7 @@ decode_extensions(<<?UINT16(?RENEGOTIATION_EXT), ?UINT16(Len),
 
 decode_extensions(<<?UINT16(?SRP_EXT), ?UINT16(Len), ?BYTE(SRPLen),
                     SRP:SRPLen/binary, Rest/binary>>, Version, MessageType, Acc)
-  when Len == SRPLen + 2 ->
+  when Len == SRPLen + 1 ->
     decode_extensions(Rest, Version, MessageType, Acc#{srp => #srp{username = SRP}});
 
 decode_extensions(<<?UINT16(?SIGNATURE_ALGORITHMS_EXT), ?UINT16(Len),
@@ -2327,7 +2374,7 @@ decode_extensions(<<?UINT16(?SNI_EXT), ?UINT16(Len),
 
 decode_extensions(<<?UINT16(?SUPPORTED_VERSIONS_EXT), ?UINT16(Len),
                        ExtData:Len/binary, Rest/binary>>, Version, MessageType, Acc) when Len > 2 ->
-    <<?UINT16(_),Versions/binary>> = ExtData,
+    <<?BYTE(_),Versions/binary>> = ExtData,
     decode_extensions(Rest, Version, MessageType,
                       Acc#{client_hello_versions =>
                                #client_hello_versions{
@@ -2596,30 +2643,26 @@ 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) ->
@@ -2632,14 +2675,14 @@ 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.
@@ -2894,14 +2937,14 @@ 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),
@@ -2909,7 +2952,7 @@ 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;
 
@@ -2919,7 +2962,7 @@ 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.
@@ -2928,9 +2971,9 @@ 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.
diff --git a/lib/ssl/src/ssl_internal.hrl b/lib/ssl/src/ssl_internal.hrl
index a079c6a796..3d117a655f 100644
--- a/lib/ssl/src/ssl_internal.hrl
+++ b/lib/ssl/src/ssl_internal.hrl
@@ -32,8 +32,6 @@
 -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().
@@ -124,7 +122,8 @@
 	  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(),
@@ -137,10 +136,10 @@
 	  %% 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,
@@ -176,6 +175,8 @@
           max_handshake_size         :: integer(),
           handshake,
           customize_hostname_check
+    %%                 ,
+      %%    save_session               :: boolean()            
          }).
 
 -record(socket_options,
@@ -196,15 +197,6 @@
 		 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()} |
diff --git a/lib/ssl/src/ssl_logger.erl b/lib/ssl/src/ssl_logger.erl
index 35c8dcfd48..c4dd2dad60 100644
--- a/lib/ssl/src/ssl_logger.erl
+++ b/lib/ssl/src/ssl_logger.erl
@@ -20,7 +20,7 @@
 
 -module(ssl_logger).
 
--export([debug/3,
+-export([debug/4,
          format/2,
          notice/2]).
 
@@ -32,8 +32,10 @@
 -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("tls_handshake_1_3.hrl").
 -include_lib("kernel/include/logger.hrl").
 
 %%-------------------------------------------------------------------------
@@ -56,12 +58,20 @@ format(#{level:= _Level, msg:= {report, Msg}, meta:= _Meta}, _Config0) ->
     end.
 
 %% Stateful logging
-debug(Level, Report, Meta) ->
+debug(Level, Direction, Protocol, Message)
+  when (Direction =:= inbound orelse Direction =:= outbound) andalso
+       (Protocol =:= 'tls_record' orelse Protocol =:= 'handshake') ->
     case logger:compare_levels(Level, debug) of
         lt ->
-            ?LOG_DEBUG(Report, Meta);
+            ?LOG_DEBUG(#{direction => Direction,
+                         protocol => Protocol,
+                         message => Message},
+                       #{domain => [otp,ssl,Protocol]});
         eq ->
-            ?LOG_DEBUG(Report, Meta);
+            ?LOG_DEBUG(#{direction => Direction,
+                         protocol => Protocol,
+                         message => Message},
+                       #{domain => [otp,ssl,Protocol]});
         _ ->
             ok
     end.
@@ -87,20 +97,32 @@ format_handshake(Direction, BinMsg) ->
 
 
 parse_handshake(Direction, #client_hello{
-                              client_version = Version
+                              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)]),
-    Message = io_lib:format("~p", [?rec_info(client_hello, ClientHello)]),
+    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 = Version
+                              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)]),
-    Message = io_lib:format("~p", [?rec_info(server_hello, ServerHello)]),
+    CipherSuite = format_cipher(CipherSuite0),
+    Message = io_lib:format("~p",
+                            [?rec_info(server_hello,
+                                       ServerHello#server_hello{cipher_suite = CipherSuite})]),
     {Header, Message};
 parse_handshake(Direction, #certificate{} = Certificate) ->
     Header = io_lib:format("~s Handshake, Certificate",
@@ -146,9 +168,52 @@ 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_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}) ->
diff --git a/lib/ssl/src/ssl_manager.erl b/lib/ssl/src/ssl_manager.erl
index c938772bc1..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) ->    
@@ -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_record.erl b/lib/ssl/src/ssl_record.erl
index ddc83821b4..d0a72ce51f 100644
--- a/lib/ssl/src/ssl_record.erl
+++ b/lib/ssl/src/ssl_record.erl
@@ -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").
@@ -39,7 +40,8 @@
 	 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]).
@@ -118,6 +120,22 @@ activate_pending_connection_state(#{current_write := Current,
 	   }.
 
 %%--------------------------------------------------------------------
+-spec step_encryption_state(connection_states()) -> connection_states().
+%%
+%% 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().
 %%
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 ae784380c8..ebb723673e 100644
--- a/lib/ssl/src/tls_connection.erl
+++ b/lib/ssl/src/tls_connection.erl
@@ -17,7 +17,6 @@
 %%
 %% %CopyrightEnd%
 %%
-
 %%
 %%----------------------------------------------------------------------
 %% Purpose: Handles an ssl connection, e.i. both the setup
@@ -48,10 +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]).
@@ -127,7 +127,7 @@ 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
@@ -162,30 +162,32 @@ 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,
-                   negotiated_version = Version,
-		   ssl_options = #ssl_options{padding_check = Check}} = State) ->
-
-    case tls_record:decode_cipher_text(Version, 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 = [#ssl_tls{type = Type}| _] = CipherTexts0}
+                   = Buffers,
+                   connection_states = ConnectionStates0,
+                   connection_env = #connection_env{negotiated_version = Version},
+                   ssl_options = #ssl_options{padding_check = Check}} = State) ->
+    case decode_cipher_texts(Version, Type, CipherTexts0, ConnectionStates0, Check, <<>>) of
+        {#ssl_tls{} = Record, ConnectionStates, CipherTexts} ->
+            {Record, State#state{protocol_buffers = Buffers#protocol_buffers{tls_cipher_texts = CipherTexts},
+                                 connection_states = ConnectionStates}};
+        {#alert{} = Alert, ConnectionStates, CipherTexts} ->
+            {Alert, State#state{protocol_buffers = Buffers#protocol_buffers{tls_cipher_texts = CipherTexts},
+                                connection_states = ConnectionStates}}
+    end;            
+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}}}; 
  	_ ->
@@ -216,14 +218,37 @@ next_event(StateName, Record, State, Actions) ->
 	    {next_state, StateName, State, [{next_event, internal, Alert} | Actions]}
     end.
 
-handle_common_event(internal, #alert{} = Alert, StateName, 
-		    #state{negotiated_version = Version} = State) ->
-    ssl_connection:handle_own_alert(Alert, Version, StateName, State);
+decode_cipher_texts(_, Type, [] = CipherTexts, ConnectionStates, _, Acc) ->
+    {#ssl_tls{type = Type, fragment = Acc}, ConnectionStates, CipherTexts};
+decode_cipher_texts(Version, Type, 
+                    [#ssl_tls{type = Type} = CT | CipherTexts], ConnectionStates0, Check, Acc) ->
+    case tls_record:decode_cipher_text(Version, CT, ConnectionStates0, Check) of
+	{#ssl_tls{type = ?APPLICATION_DATA, fragment = Plain}, ConnectionStates} ->		      
+            decode_cipher_texts(Version, Type, CipherTexts, 
+                                ConnectionStates, Check, <<Acc/binary, Plain/binary>>);
+        {#ssl_tls{type = Type0, fragment = Plain}, ConnectionStates} ->
+            {#ssl_tls{type = Type0, fragment = Plain}, ConnectionStates, CipherTexts};
+        #alert{} = Alert ->
+            {Alert, ConnectionStates0, CipherTexts}
+    end;
+decode_cipher_texts(_, Type, CipherTexts, ConnectionStates, _, Acc) ->
+    {#ssl_tls{type = Type, fragment = Acc}, ConnectionStates, CipherTexts}.
+
+%%% TLS record protocol level application data messages 
+
+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} ->
+            {next_state, StateName, State, Actions} = next_event(StateName, Record, State1), 
+            ssl_connection:hibernate_after(StateName, State, Actions)
+    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
 	EffectiveVersion = effective_version(Version, Options),
@@ -241,22 +266,23 @@ 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});
@@ -272,24 +298,26 @@ 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),
@@ -299,65 +327,58 @@ renegotiate(#state{role = server,
     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,
-				  connection_states = ConnectionStates0,
-                                  ssl_options = SslOpts} = State0) ->
+
+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),
-    Report = #{direction => outbound,
-               protocol => 'tls_record',
-               message => BinHandshake},
-    HandshakeMsg = #{direction => outbound,
-                     protocol => 'handshake',
-                     message => Handshake},
-    ssl_logger:debug(SslOpts#ssl_options.log_level, HandshakeMsg, #{domain => [otp,ssl,handshake]}),
-    ssl_logger:debug(SslOpts#ssl_options.log_level, Report, #{domain => [otp,ssl,tls_record]}),
+    ssl_logger:debug(SslOpts#ssl_options.log_level, outbound, 'handshake', Handshake),
+    ssl_logger:debug(SslOpts#ssl_options.log_level, outbound, 'tls_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),
     {State0#state{flight_buffer = []}, []}.
 
-queue_change_cipher(Msg, #state{negotiated_version = Version,
+
+queue_change_cipher(Msg, #state{connection_env = #connection_env{negotiated_version = Version},
                                 flight_buffer = Flight0,
-                                connection_states = ConnectionStates0,
-                                ssl_options = SslOpts} = State0) ->
+                                ssl_options = SslOpts,
+                                connection_states = ConnectionStates0} = State0) ->
     {BinChangeCipher, ConnectionStates} =
 	encode_change_cipher(Msg, Version, ConnectionStates0),
-    Report = #{direction => outbound,
-               protocol => 'tls_record',
-               message => BinChangeCipher},
-    ssl_logger:debug(SslOpts#ssl_options.log_level, Report, #{domain => [otp,ssl,tls_record]}),
+    ssl_logger:debug(SslOpts#ssl_options.log_level, outbound, 'tls_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 = #{sni := SNI}}) ->
@@ -381,17 +402,15 @@ 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,
-                         connection_states = ConnectionStates0,
-                         ssl_options = SslOpts} = StateData0) ->
-    {BinMsg, ConnectionStates} = encode_alert(Alert, Version, ConnectionStates0),
+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),
-    Report = #{direction => outbound,
-               protocol => 'tls_record',
-               message => BinMsg},
-    ssl_logger:debug(SslOpts#ssl_options.log_level, Report, #{domain => [otp,ssl,tls_record]}),
+    ssl_logger:debug(SslOpts#ssl_options.log_level, outbound, 'tls_record', BinMsg),
     StateData0#state{connection_states = ConnectionStates}.
 
 %% If an ALERT sent in the connection state, should cause the TLS
@@ -470,17 +489,20 @@ 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) ->
     KeyShare = maybe_generate_client_shares(SslOpts),
-    Timer = ssl_connection:start_or_recv_cancel_timer(Timeout, From),
     Hello = tls_handshake:client_hello(Host, Port, ConnectionStates0, SslOpts,
 				       Cache, CacheCb, Renegotiation, Cert, KeyShare),
 
@@ -489,23 +511,17 @@ init({call, From}, {start, Timeout},
     {BinMsg, ConnectionStates, Handshake} =
         encode_handshake(Hello,  HelloVersion, ConnectionStates0, Handshake0),
     send(Transport, Socket, BinMsg),
-    Report = #{direction => outbound,
-               protocol => 'tls_record',
-               message => BinMsg},
-    HelloMsg = #{direction => outbound,
-               protocol => 'handshake',
-               message => Hello},
-    ssl_logger:debug(SslOpts#ssl_options.log_level, HelloMsg, #{domain => [otp,ssl,handshake]}),
-    ssl_logger:debug(SslOpts#ssl_options.log_level, Report, #{domain => [otp,ssl,tls_record]}),
+    ssl_logger:debug(SslOpts#ssl_options.log_level, outbound, 'handshake', Hello),
+    ssl_logger:debug(SslOpts#ssl_options.log_level, outbound, 'tls_record', BinMsg),
+
     State = State0#state{connection_states = ConnectionStates,
-			  negotiated_version = HelloVersion, %% 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,
-                         key_share = KeyShare},    
-    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).
@@ -517,8 +533,9 @@ 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(_, _, _) ->
@@ -532,25 +549,32 @@ 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},
+                                         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},
+                                         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 choose_tls_version(SslOpts, Hello) of
         'tls_v1.3' ->
             %% Continue in TLS 1.3 'start' state
@@ -563,8 +587,8 @@ hello(internal, #client_hello{client_version = ClientVersion} = Hello,
                                      Renegotiation) of
                 #alert{} = Alert ->
                     ssl_connection:handle_own_alert(Alert, ClientVersion, hello,
-                                                    State#state{negotiated_version
-                                                                = ClientVersion});
+                                                    State#state{connection_env = CEnv#connection_env{negotiated_version
+                                                                                                     = ClientVersion}});
                 {Version, {Type, Session},
                  ConnectionStates, Protocol0, ServerHelloExt, HashSign} ->
                     Protocol = case Protocol0 of
@@ -575,23 +599,26 @@ hello(internal, #client_hello{client_version = ClientVersion} = Hello,
                                   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})
+                                              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)
@@ -642,22 +669,77 @@ 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, 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
@@ -668,17 +750,19 @@ 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,
+                                           protocol_cb = Connection},
+                  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),
     next_event(?FUNCTION_NAME, no_record, State);
+
 connection(Type, Event, State) ->
     ssl_connection:?FUNCTION_NAME(Type, Event, State, ?MODULE).
 
@@ -686,6 +770,23 @@ 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).
 
@@ -806,10 +907,10 @@ wait_sh(Type, Event, State) ->
 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) ->
@@ -830,65 +931,63 @@ initial_state(Role, Sender, Host, Port, Socket, {SSLOptions, SocketOptions, Trac
     #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,
+    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,
+                     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 = <<>>,
+       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,
+                                             protocol_cb = Connection,
+                                             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},
@@ -921,18 +1020,14 @@ next_tls_record(Data, StateName, #state{protocol_buffers =
 	    handle_record_alert(Alert, State0)
     end.
 
-
 %% 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.
+acceptable_record_versions(StateName, #state{connection_env = #connection_env{negotiated_version = Version}}) when StateName =/= hello->
+    Version;
 acceptable_record_versions(hello, _) ->
-    [tls_record:protocol_version(Vsn) || Vsn <- ?ALL_TLS_RECORD_VERSIONS];
-acceptable_record_versions(_, #state{negotiated_version = {Major, Minor}})
-  when Major > 3; Major =:= 3, Minor >= 4 ->
-    [{3, 3}];
-acceptable_record_versions(_, #state{negotiated_version = Version}) ->
-    [Version].
+    [tls_record:protocol_version(Vsn) || Vsn <- ?ALL_AVAILABLE_VERSIONS].
 
 handle_record_alert(Alert, _) ->
     Alert.
@@ -944,26 +1039,27 @@ 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({tcp_passive, Socket},  StateName, 
+            #state{static_env = #static_env{socket = Socket},
+                   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) ->
+                   protocol_specific = PS} = State) ->
 
     %% Note that as of TLS 1.1,
     %% failure to properly close a connection no longer requires that a
@@ -984,7 +1080,7 @@ 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
@@ -1002,6 +1098,14 @@ 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 = Buffer,
+                                                          protocol_buffers = #protocol_buffers{tls_cipher_texts = CTs}} = 
+                   State}) when (Buffer =/= <<>>) 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}) ->
@@ -1021,7 +1125,7 @@ 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
@@ -1032,8 +1136,9 @@ gen_handshake(StateName, Type, Event,
 					    Version, StateName, State)  
     end.
 
+
 gen_handshake_1_3(StateName, Type, Event,
-	      #state{negotiated_version = Version} = State) ->
+	      #state{connection_env = #connection_env{negotiated_version = Version}} = State) ->
     try tls_connection_1_3:StateName(Type, Event, State, ?MODULE) of
 	Result ->
 	    Result
@@ -1044,7 +1149,8 @@ gen_handshake_1_3(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
@@ -1055,7 +1161,7 @@ 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
@@ -1066,7 +1172,7 @@ gen_info(Event, StateName, #state{negotiated_version = Version} = State) ->
 					    Version, StateName, State)  
     end.
 
-gen_info_1_3(Event, connected = StateName,  #state{negotiated_version = Version} = State) ->
+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
@@ -1077,7 +1183,7 @@ gen_info_1_3(Event, connected = StateName,  #state{negotiated_version = Version}
 					    Version, StateName, State)
     end;
 
-gen_info_1_3(Event, StateName, #state{negotiated_version = Version} = State) ->
+gen_info_1_3(Event, StateName, #state{connection_env = #connection_env{negotiated_version = Version}} = State) ->
     try handle_info(Event, StateName, State) of
 	Result ->
 	    Result
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
index 04bcea1e1b..de786d0875 100644
--- a/lib/ssl/src/tls_connection_1_3.erl
+++ b/lib/ssl/src/tls_connection_1_3.erl
@@ -109,7 +109,8 @@
 
 %% gen_statem helper functions
 -export([start/4,
-         negotiated/4
+         negotiated/4,
+         wait_finished/4
         ]).
 
 start(internal,
@@ -134,67 +135,55 @@ start(internal,
 
     end.
 
-%% TODO: move these functions
+
+negotiated(internal, Map, State0, _Module) ->
+    case tls_handshake_1_3:do_negotiated(Map, State0) of
+        #alert{} = Alert ->
+            ssl_connection:handle_own_alert(Alert, {3,4}, negotiated, State0);
+        State ->
+            {next_state, wait_finished, State, []}
+
+    end.
+
+
+wait_finished(internal,
+             #change_cipher_spec{} = ChangeCipherSpec, State0, _Module) ->
+    case tls_handshake_1_3:do_wait_finished(ChangeCipherSpec, State0) of
+        #alert{} = Alert ->
+            ssl_connection:handle_own_alert(Alert, {3,4}, wait_finished, State0);
+        State1 ->
+            {Record, State} = tls_connection:next_record(State1),
+            tls_connection:next_event(?FUNCTION_NAME, Record, State)
+    end;
+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).
+
+
 update_state(#state{connection_states = ConnectionStates0,
+                    connection_env = CEnv,
                     session = Session} = State,
-             #{client_random := ClientRandom,
-               cipher := Cipher,
+             #{cipher := Cipher,
                key_share := KeyShare,
                session_id := SessionId}) ->
     #{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, ClientRandom, Cipher),
-    SecParamsW = ssl_cipher:security_parameters_1_3(SecParamsW0, ClientRandom, Cipher),
+    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}}.
-
-
-negotiated(internal,
-           Map,
-           #state{connection_states = ConnectionStates0,
-                  session = #session{session_id = SessionId},
-                  ssl_options = #ssl_options{} = SslOpts,
-                  key_share = KeyShare,
-                  tls_handshake_history = HHistory0,
-                  transport_cb = Transport,
-                  socket = Socket}, _Module) ->
-
-    %% Create server_hello
-    %% Extensions: supported_versions, key_share, (pre_shared_key)
-    ServerHello = tls_handshake_1_3:server_hello(SessionId, KeyShare,
-                                                 ConnectionStates0, Map),
-
-    %% Update handshake_history (done in encode!)
-    %% Encode handshake
-    {BinMsg, _ConnectionStates, _HHistory} =
-        tls_connection:encode_handshake(ServerHello, {3,4}, ConnectionStates0, HHistory0),
-    %% Send server_hello
-    tls_connection:send(Transport, Socket, BinMsg),
-    Report = #{direction => outbound,
-               protocol => 'tls_record',
-               message => BinMsg},
-    Msg = #{direction => outbound,
-            protocol => 'handshake',
-            message => ServerHello},
-    ssl_logger:debug(SslOpts#ssl_options.log_level, Msg, #{domain => [otp,ssl,handshake]}),
-    ssl_logger:debug(SslOpts#ssl_options.log_level, Report, #{domain => [otp,ssl,tls_record]}),
-    ok.
-
-    %% K_send = handshake ???
-    %% (Send EncryptedExtensions)
-    %% ([Send CertificateRequest])
-    %% [Send Certificate + CertificateVerify]
-    %% Send Finished
-    %% K_send = application ???
-
-    %% Will be called implicitly
-    %% {Record, State} = Connection:next_record(State2#state{session = Session}),
-    %% Connection:next_event(wait_flight2, Record, State, Actions),
-    %% OR
-    %% Connection:next_event(WAIT_EOED, Record, State, Actions)
+                session = Session#session{session_id = SessionId},
+                connection_env = CEnv#connection_env{negotiated_version = {3,4}}}.
diff --git a/lib/ssl/src/tls_handshake.erl b/lib/ssl/src/tls_handshake.erl
index 5aca4bf8c8..a1397047f2 100644
--- a/lib/ssl/src/tls_handshake.erl
+++ b/lib/ssl/src/tls_handshake.erl
@@ -31,6 +31,7 @@
 -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").
 
@@ -49,7 +50,7 @@
 %% 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(),
                    #key_share_client_hello{} | undefined) ->
 			  #client_hello{}.
@@ -97,13 +98,13 @@ 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:key_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, 
-                    HelloExt::map(), {ssl_cipher_format:hash(), ssl_cipher_format:sign_algo()} | 
+                    HelloExt::map(), {ssl:hash(), ssl:sign_algo()} | 
                     undefined} | #alert{}.
 %%
 %% Description: Handles a received hello message
@@ -232,7 +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
 %%--------------------------------------------------------------------
@@ -318,8 +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}
@@ -330,14 +330,14 @@ 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.
 
 
@@ -389,10 +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 ->
-            Report = #{direction => inbound,
-                       protocol => 'handshake',
-                       message => Handshake},
-            ssl_logger:debug(Opts#ssl_options.log_level, Report, #{domain => [otp,ssl,handshake]}),
+            ssl_logger:debug(Opts#ssl_options.log_level, inbound, 'handshake', Handshake),
 	    get_tls_handshake_aux(Version, Rest, Opts, [{Handshake,Raw} | Acc])
     catch
 	_:_ ->
@@ -403,14 +400,15 @@ get_tls_handshake_aux(_Version, Data, _, Acc) ->
 
 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>>) ->
     Exts = ssl_handshake:decode_vector(Extensions),
-    DecodedExtensions = ssl_handshake:decode_hello_extensions(Exts, Version, client_hello),
+    DecodedExtensions = ssl_handshake:decode_hello_extensions(Exts, Version, {Major, Minor},
+                                                              client_hello),
     #client_hello{
        client_version = {Major,Minor},
        random = Random,
diff --git a/lib/ssl/src/tls_handshake_1_3.erl b/lib/ssl/src/tls_handshake_1_3.erl
index f381e038cf..c099e3f276 100644
--- a/lib/ssl/src/tls_handshake_1_3.erl
+++ b/lib/ssl/src/tls_handshake_1_3.erl
@@ -27,6 +27,8 @@
 
 -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").
@@ -38,7 +40,13 @@
 -export([handle_client_hello/3]).
 
 %% Create handshake messages
--export([server_hello/4]).
+-export([certificate/5,
+         certificate_verify/4,
+         encrypted_extensions/0,
+         server_hello/4]).
+
+-export([do_negotiated/2,
+         do_wait_finished/2]).
 
 %%====================================================================
 %% Create handshake messages
@@ -50,8 +58,7 @@ server_hello(SessionId, KeyShare, ConnectionStates, _Map) ->
     Extensions = server_hello_extensions(KeyShare),
     #server_hello{server_version = {3,3}, %% legacy_version
 		  cipher_suite = SecParams#security_parameters.cipher_suite,
-                  compression_method =
-                      SecParams#security_parameters.compression_algorithm,
+                  compression_method = 0, %% legacy attribute
 		  random = SecParams#security_parameters.server_random,
 		  session_id = SessionId,
 		  extensions = Extensions
@@ -62,6 +69,96 @@ server_hello_extensions(KeyShare) ->
     Extensions = #{server_hello_selected_version => SupportedVersions},
     ssl_handshake:add_server_share(Extensions, KeyShare).
 
+%% TODO: implement support for encrypted_extensions
+encrypted_extensions() ->
+    #encrypted_extensions{
+       extensions = #{}
+      }.
+
+%% 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 digitally_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
+      }.
 
 
 %%====================================================================
@@ -76,10 +173,16 @@ encode_handshake(#certificate_request_1_3{
     {?CERTIFICATE_REQUEST, <<EncContext/binary, BinExts/binary>>};
 encode_handshake(#certificate_1_3{
                     certificate_request_context = Context, 
-                    entries = Entries}) ->
+                    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{
@@ -120,15 +223,20 @@ decode_handshake(?CERTIFICATE, <<?BYTE(0), ?UINT24(Size), Certs:Size/binary>>) -
     CertList = decode_cert_entries(Certs),
     #certificate_1_3{ 
        certificate_request_context = <<>>,
-       entries = CertList
+       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,
-       entries = CertList
+       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)
@@ -169,9 +277,16 @@ encode_cert_entries([#certificate_entry{data = Data,
                                         extensions = Exts} | Rest], Acc) ->
     DSize = byte_size(Data),
     BinExts = encode_extensions(Exts),
-    ExtSize = byte_size(BinExts),
     encode_cert_entries(Rest, 
-                        [<<?UINT24(DSize), Data/binary, ?UINT16(ExtSize), BinExts/binary>> | Acc]).
+                        [<<?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, []).
@@ -193,12 +308,64 @@ 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
+digitally_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.
+
+
+build_content(Context, THash) ->
+    Prefix = binary:copy(<<32>>, 64),
+    <<Prefix/binary,Context/binary,?BYTE(0),THash/binary>>.
+
 %%====================================================================
 %% Handle handshake messages
 %%====================================================================
 
 handle_client_hello(#client_hello{cipher_suites = ClientCiphers,
-                                  random = Random,
                                   session_id = SessionId,
                                   extensions = Extensions} = _Hello,
                     #ssl_options{ciphers = ServerCiphers,
@@ -233,26 +400,24 @@ handle_client_hello(#client_hello{cipher_suites = ClientCiphers,
         Cipher = Maybe(select_cipher_suite(ClientCiphers, ServerCiphers)),
         Group = Maybe(select_server_group(ServerGroups, ClientGroups)),
         Maybe(validate_key_share(ClientGroups, ClientShares)),
-        _ClientPubKey = Maybe(get_client_public_key(Group, ClientShares)),
 
-        %% Handle certificate
-        {PublicKeyAlgo, SignAlgo} = get_certificate_params(Cert),
+        ClientPubKey = Maybe(get_client_public_key(Group, ClientShares)),
+
+        {PublicKeyAlgo, SignAlgo, SignHash} = get_certificate_params(Cert),
 
         %% Check if client supports signature algorithm of server certificate
-        Maybe(check_cert_sign_algo(SignAlgo, ClientSignAlgs, ClientSignAlgsCert)),
+        Maybe(check_cert_sign_algo(SignAlgo, SignHash, ClientSignAlgs, ClientSignAlgsCert)),
 
-        %% Check if server supports
+        %% Select signature algorithm (used in CertificateVerify message).
         SelectedSignAlg = Maybe(select_sign_algo(PublicKeyAlgo, ClientSignAlgs, ServerSignAlgs)),
 
         %% Generate server_share
         KeyShare = ssl_cipher:generate_server_share(Group),
-
         _Ret = #{cipher => Cipher,
                 group => Group,
                 sign_alg => SelectedSignAlg,
-                %% client_share => ClientPubKey,
+                client_share => ClientPubKey,
                 key_share => KeyShare,
-                client_random => Random,
                 session_id => SessionId}
 
         %% TODO:
@@ -265,9 +430,9 @@ handle_client_hello(#client_hello{cipher_suites = ClientCiphers,
             ?ALERT_REC(?FATAL, ?INSUFFICIENT_SECURITY, no_suitable_groups);
         {Ref, illegal_parameter} ->
             ?ALERT_REC(?FATAL, ?ILLEGAL_PARAMETER);
-        {Ref, {client_hello_retry_request, _Group0}} ->
+        {Ref, {hello_retry_request, _Group0}} ->
             %% TODO
-            exit({client_hello_retry_request, not_implemented});
+            ?ALERT_REC(?FATAL, ?INTERNAL_ERROR, "hello_retry_request not implemented");
         {Ref, no_suitable_cipher} ->
             ?ALERT_REC(?FATAL, ?INSUFFICIENT_SECURITY, no_suitable_cipher);
         {Ref, {insufficient_security, no_suitable_signature_algorithm}} ->
@@ -277,6 +442,265 @@ handle_client_hello(#client_hello{cipher_suites = ClientCiphers,
     end.
 
 
+do_negotiated(#{client_share := ClientKey,
+                group := SelectedGroup,
+                sign_alg := SignatureScheme
+               } = Map,
+           #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},
+                  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(SessionId, KeyShare, ConnectionStates0, Map),
+
+        {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 Certificate
+        Certificate = certificate(OwnCert, CertDbHandle, CertDbRef, <<>>, server),
+
+        %% Encode Certificate
+        State5 = tls_connection:queue_handshake(Certificate, State4),
+
+        %% Create CertificateVerify
+        CertificateVerify = Maybe(certificate_verify(CertPrivateKey, SignatureScheme,
+                                                     State5, server)),
+        %% Encode CertificateVerify
+        State6 = tls_connection:queue_handshake(CertificateVerify, State5),
+
+        %% Create Finished
+        Finished = finished(State6),
+
+        %% Encode Finished
+        State7 = tls_connection:queue_handshake(Finished, State6),
+
+        %% Send first flight
+        {State8, _} = tls_connection:send_handshake_flight(State7),
+
+        State8
+
+    catch
+        {Ref, {state_not_implemented, State}} ->
+            %% TODO
+            ?ALERT_REC(?FATAL, ?INTERNAL_ERROR, {state_not_implemented, State})
+    end.
+
+
+do_wait_finished(#change_cipher_spec{},
+              #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
+
+        State0
+
+    catch
+        {_Ref, {state_not_implemented, State}} ->
+            ?ALERT_REC(?FATAL, ?INTERNAL_ERROR, {state_not_implemented, State})
+    end;
+do_wait_finished(#finished{},
+              #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
+        %% TODO: validate client Finished
+
+        State1 = calculate_traffic_secrets(State0),
+
+        %% Configure traffic keys
+        ssl_record:step_encryption_state(State1)
+
+
+    catch
+        {_Ref, {state_not_implemented, State}} ->
+            %% TODO
+            ?ALERT_REC(?FATAL, ?INTERNAL_ERROR, {state_not_implemented, State})
+    end.
+
+
+%% TODO: Remove this function!
+%% not_implemented(State) ->
+%%     {error, {state_not_implemented, State}}.
+
+
+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),
+
+    {Messages0, _} =  HHistory,
+
+    %% Drop Client Finish
+    [_|Messages] = Messages0,
+
+    %% 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.
+
+%% 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)}.
+
+
+
+cipher_init(Key, IV, FinishedKey) ->
+    #cipher_state{key = Key,
+                  iv = IV,
+                  finished_key = FinishedKey,
+                  tag_len = 16}.
+
+
 %% 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
@@ -324,14 +748,20 @@ get_client_public_key(Group, ClientShares) ->
          {value, {_, _, ClientPublicKey}} ->
              {ok, ClientPublicKey};
          false ->
-             %% ClientHelloRetryRequest
-             {error, {client_hello_retry_request, Group}}
+             %% 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.
+             {error, {hello_retry_request, Group}}
      end.
 
 select_cipher_suite([], _) ->
     {error, no_suitable_cipher};
 select_cipher_suite([Cipher|ClientCiphers], ServerCiphers) ->
-    case lists:member(Cipher, ServerCiphers) of
+    case lists:member(Cipher, tls_v1:suites('TLS_v1.3')) andalso
+        lists:member(Cipher, ServerCiphers) of
         true ->
             {ok, Cipher};
         false ->
@@ -349,22 +779,28 @@ select_cipher_suite([Cipher|ClientCiphers], ServerCiphers) ->
 %% If no "signature_algorithms_cert" extension is
 %% present, then the "signature_algorithms" extension also applies to
 %% signatures appearing in certificates.
-check_cert_sign_algo(SignAlgo, ClientSignAlgs, undefined) ->
-    maybe_lists_member(SignAlgo, ClientSignAlgs,
-                       {insufficient_security, no_suitable_signature_algorithm});
-check_cert_sign_algo(SignAlgo, _, ClientSignAlgsCert) ->
-    maybe_lists_member(SignAlgo, ClientSignAlgsCert,
-                       {insufficient_security, no_suitable_signature_algorithm}).
+
+%% 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 check for ellipctic curves!
+%% 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),
-    case PublicKeyAlgo =:= rsa andalso
-        ((S =:= rsa_pkcs1) orelse (S =:= rsa_pss_rsae) orelse (S =:= rsa_pss_pss)) andalso
+    %% 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};
@@ -373,51 +809,51 @@ select_sign_algo(PublicKeyAlgo, [C|ClientSignAlgs], ServerSignAlgs) ->
     end.
 
 
-maybe_lists_member(Elem, List, Error) ->
-    case lists:member(Elem, List) of
+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;
-        false ->
-            {error, Error}
+        _Else ->
+            do_check_cert_sign_algo(SignAlgo, SignHash, T)
     end.
 
-%% TODO: test with ecdsa, rsa_pss_rsae, rsa_pss_pss
+
+%% 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),
-    SignAlgo = public_key:pkix_sign_types(SignAlgo0),
+    {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),
-    Scheme = sign_algo_to_scheme(SignAlgo),
-    {PublicKeyAlgo, Scheme}.
-
-sign_algo_to_scheme({Hash0, Sign0}) ->
-    SupportedSchemes = tls_v1:default_signature_schemes({3,4}),
-    Hash = case Hash0 of
-               sha ->
-                   sha1;
-               H ->
-                   H
-           end,
-    Sign = case Sign0 of
-               rsa ->
-                   rsa_pkcs1;
-               S ->
-                   S
-           end,
-    sign_algo_to_scheme(Hash, Sign, SupportedSchemes).
-%%
-sign_algo_to_scheme(_, _, []) ->
-    not_found;
-sign_algo_to_scheme(H, S, [Scheme|T]) ->
-    {Hash, Sign, _Curve} = ssl_cipher:scheme_to_components(Scheme),
-    case H =:= Hash andalso S =:= Sign of
-        true ->
-            Scheme;
-        false ->
-            sign_algo_to_scheme(H, S, T)
-    end.
+    {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') ->
diff --git a/lib/ssl/src/tls_handshake_1_3.hrl b/lib/ssl/src/tls_handshake_1_3.hrl
index 6ef5364399..7ae1b93e1c 100644
--- a/lib/ssl/src/tls_handshake_1_3.hrl
+++ b/lib/ssl/src/tls_handshake_1_3.hrl
@@ -191,7 +191,7 @@
           %%     case RawPublicKey:
           %%       /* From RFC 7250 ASN.1_subjectPublicKeyInfo */
           %%       opaque ASN1_subjectPublicKeyInfo<1..2^24-1>;
-
+          %%
           %%     case X509:
           %%       opaque cert_data<1..2^24-1>;
           %% };
@@ -200,9 +200,14 @@
 
 -record(certificate_1_3, {
           certificate_request_context, % opaque certificate_request_context<0..2^8-1>;
-          entries    % CertificateEntry certificate_list<0..2^24-1>;
+          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
@@ -223,4 +228,11 @@
           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 ed7b475619..96e851de41 100644
--- a/lib/ssl/src/tls_record.erl
+++ b/lib/ssl/src/tls_record.erl
@@ -76,25 +76,15 @@ init_connection_states(Role, BeastMitigation) ->
       pending_write => Pending}.
 
 %%--------------------------------------------------------------------
--spec get_tls_records(binary(), [tls_version()], binary(), ssl_options()) -> {[binary()], binary()} | #alert{}.
+-spec get_tls_records(binary(), [tls_version()] | tls_version(), binary(), 
+                      #ssl_options{}) -> {[binary()], 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, 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_tls_records_aux(BinData, [], SslOpts);
-                false ->
-                    ?ALERT_REC(?FATAL, ?BAD_RECORD_MAC)
-            end;
-        _ ->
-            get_tls_records_aux(BinData, [], SslOpts)
-    end.
+get_tls_records(Data, Version, Buffer, SslOpts) ->
+    get_tls_records_aux(Version, <<Buffer/binary, Data/binary>>, [], SslOpts).
 
 %%====================================================================
 %% Encoding
@@ -129,7 +119,7 @@ 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_handshake(Alert, 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)>>,
@@ -408,72 +398,65 @@ 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, SslOpts) ->
-    RawTLSRecord = <<?BYTE(?APPLICATION_DATA),?BYTE(MajVer),?BYTE(MinVer),
-                     ?UINT16(Length), Data:Length/binary>>,
-    Report = #{direction => inbound,
-               protocol => 'tls_record',
-               message => [RawTLSRecord]},
-    ssl_logger:debug(SslOpts#ssl_options.log_level, Report, #{domain => [otp,ssl,tls_record]}),
-    get_tls_records_aux(Rest, [#ssl_tls{type = ?APPLICATION_DATA,
-					version = {MajVer, MinVer},
-					fragment = Data} | Acc],
-                        SslOpts);
-get_tls_records_aux(<<?BYTE(?HANDSHAKE),?BYTE(MajVer),?BYTE(MinVer),
-                      ?UINT16(Length),
-                      Data:Length/binary, Rest/binary>>, Acc, SslOpts) ->
-    RawTLSRecord = <<?BYTE(?HANDSHAKE),?BYTE(MajVer),?BYTE(MinVer),
-                     ?UINT16(Length), Data:Length/binary>>,
-    Report = #{direction => inbound,
-               protocol => 'tls_record',
-               message => [RawTLSRecord]},
-    ssl_logger:debug(SslOpts#ssl_options.log_level, Report, #{domain => [otp,ssl,tls_record]}),
-    get_tls_records_aux(Rest, [#ssl_tls{type = ?HANDSHAKE,
-					version = {MajVer, MinVer},
-					fragment = Data} | Acc],
-                        SslOpts);
-get_tls_records_aux(<<?BYTE(?ALERT),?BYTE(MajVer),?BYTE(MinVer),
-		     ?UINT16(Length), Data:Length/binary, 
-		     Rest/binary>>, Acc, SslOpts) ->
-    RawTLSRecord = <<?BYTE(?ALERT),?BYTE(MajVer),?BYTE(MinVer),
-                     ?UINT16(Length), Data:Length/binary>>,
-    Report = #{direction => inbound,
-               protocol => 'tls_record',
-               message => [RawTLSRecord]},
-    ssl_logger:debug(SslOpts#ssl_options.log_level, Report, #{domain => [otp,ssl,tls_record]}),
-    get_tls_records_aux(Rest, [#ssl_tls{type = ?ALERT,
-					version = {MajVer, MinVer},
-					fragment = Data} | Acc],
-                        SslOpts);
-get_tls_records_aux(<<?BYTE(?CHANGE_CIPHER_SPEC),?BYTE(MajVer),?BYTE(MinVer),
-		     ?UINT16(Length), Data:Length/binary, Rest/binary>>, 
-		    Acc, SslOpts) ->
-    RawTLSRecord = <<?BYTE(?CHANGE_CIPHER_SPEC),?BYTE(MajVer),?BYTE(MinVer),
-                     ?UINT16(Length), Data:Length/binary>>,
-    Report = #{direction => inbound,
-               protocol => 'tls_record',
-               message => [RawTLSRecord]},
-    ssl_logger:debug(SslOpts#ssl_options.log_level, Report, #{domain => [otp,ssl,tls_record]}),
-    get_tls_records_aux(Rest, [#ssl_tls{type = ?CHANGE_CIPHER_SPEC,
-					version = {MajVer, MinVer},
-					fragment = Data} | Acc],
-                       SslOpts);
-get_tls_records_aux(<<0:1, _CT:7, ?BYTE(_MajVer), ?BYTE(_MinVer),
-                      ?UINT16(Length), _/binary>>,
-                    _Acc, _SslOpts) when Length > ?MAX_CIPHER_TEXT_LENGTH ->
+%% TLS 1.3
+get_tls_records_aux({3,4} = Version, <<?BYTE(Type),?BYTE(3),?BYTE(3),
+                                       ?UINT16(Length), Data:Length/binary,
+                                       Rest/binary>> = RawTLSRecord,
+		    Acc, SslOpts) when Type == ?APPLICATION_DATA;
+                                       Type == ?HANDSHAKE;
+                                       Type == ?ALERT;
+                                       Type == ?CHANGE_CIPHER_SPEC ->
+    ssl_logger:debug(SslOpts#ssl_options.log_level, inbound, 'tls_record', [RawTLSRecord]),
+    get_tls_records_aux(Version, Rest, [#ssl_tls{type = Type,
+					version = {3,3}, %% Use legacy version
+					fragment = Data} | Acc], SslOpts);
+get_tls_records_aux({MajVer, MinVer} = Version, <<?BYTE(Type),?BYTE(MajVer),?BYTE(MinVer),
+                                                  ?UINT16(Length), Data:Length/binary, Rest/binary>> = RawTLSRecord, 
+		    Acc, SslOpts) when Type == ?APPLICATION_DATA;
+                                       Type == ?HANDSHAKE;
+                                       Type == ?ALERT;
+                                       Type == ?CHANGE_CIPHER_SPEC ->
+    ssl_logger:debug(SslOpts#ssl_options.log_level, inbound, 'tls_record', [RawTLSRecord]),
+    get_tls_records_aux(Version, Rest, [#ssl_tls{type = Type,
+					version = Version,
+					fragment = Data} | Acc], SslOpts);
+get_tls_records_aux(Versions, <<?BYTE(Type),?BYTE(MajVer),?BYTE(MinVer),
+                                ?UINT16(Length), Data:Length/binary, Rest/binary>> = RawTLSRecord, 
+		    Acc, SslOpts) when is_list(Versions) andalso
+                                       ((Type == ?APPLICATION_DATA) 
+                                        orelse
+                                          (Type == ?HANDSHAKE)
+                                        orelse
+                                          (Type == ?ALERT)
+                                        orelse
+                                          (Type == ?CHANGE_CIPHER_SPEC)) ->
+    case is_acceptable_version({MajVer, MinVer}, Versions) of 
+        true ->
+            ssl_logger:debug(SslOpts#ssl_options.log_level, inbound, 'tls_record', [RawTLSRecord]),
+            get_tls_records_aux(Versions, Rest, [#ssl_tls{type = Type,
+                                                          version = {MajVer, MinVer},
+                                                          fragment = Data} | Acc], SslOpts);
+        false ->
+            ?ALERT_REC(?FATAL, ?BAD_RECORD_MAC)
+    end;
+get_tls_records_aux(_, <<?BYTE(Type),?BYTE(_MajVer),?BYTE(_MinVer),
+                         ?UINT16(Length), _:Length/binary, _Rest/binary>>, 
+		    _, _) when Type == ?APPLICATION_DATA;
+                               Type == ?HANDSHAKE;
+                               Type == ?ALERT;
+                               Type == ?CHANGE_CIPHER_SPEC ->
+    ?ALERT_REC(?FATAL, ?BAD_RECORD_MAC);
+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, _SslOpts) ->
+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.
+    end.
 %%--------------------------------------------------------------------
 encode_plain_text(Type, Version, Data, #{current_write := Write0} = ConnectionStates) ->
     {CipherFragment, Write1} = do_encode_plain_text(Type, Version, Data, Write0),
diff --git a/lib/ssl/src/tls_record_1_3.erl b/lib/ssl/src/tls_record_1_3.erl
index d424336187..05acc08392 100644
--- a/lib/ssl/src/tls_record_1_3.erl
+++ b/lib/ssl/src/tls_record_1_3.erl
@@ -76,8 +76,8 @@ encode_data(Frag, ConnectionStates) ->
 encode_plain_text(Type, Data0, #{current_write := Write0} = ConnectionStates) ->
     PadLen = 0, %% TODO where to specify PadLen?
     Data = inner_plaintext(Type, Data0, PadLen),
-    {CipherFragment, Write1} = encode_plain_text(Data, Write0),
-    {CipherText, Write} = encode_tls_cipher_text(CipherFragment, Write1),
+    CipherFragment = encode_plain_text(Data, Write0),
+    {CipherText, Write} = encode_tls_cipher_text(CipherFragment, Write0),
     {CipherText, ConnectionStates#{current_write => Write}}.
 
 encode_iolist(Type, Data, ConnectionStates0) ->
@@ -105,25 +105,41 @@ decode_cipher_text(#ssl_tls{type = ?OPAQUE_TYPE,
                             fragment = CipherFragment},
 		   #{current_read :=
 			 #{sequence_number := Seq,
-                           cipher_state := CipherS0,
+                           cipher_state := #cipher_state{key = Key,
+                                                         iv = IV,
+                                                         tag_len = TagLen},
 			   security_parameters :=
 			       #security_parameters{
 				  cipher_type = ?AEAD,
                                   bulk_cipher_algorithm =
                                       BulkCipherAlgo}
 			  } = ReadState0} = ConnectionStates0) ->
-    AAD = start_additional_data(),
-    CipherS1 = ssl_cipher:nonce_seed(<<?UINT64(Seq)>>, CipherS0),
-    case decipher_aead(BulkCipherAlgo, CipherS1, AAD, CipherFragment) of
-	{PlainFragment, CipherS1} ->
+    case decipher_aead(CipherFragment, BulkCipherAlgo, Key, Seq, IV, TagLen) of
+	#alert{} = Alert ->
+	    Alert;
+	PlainFragment ->
 	    ConnectionStates =
                 ConnectionStates0#{current_read =>
-                                        ReadState0#{cipher_state => CipherS1,
-                                                    sequence_number => Seq + 1}},
-	    decode_inner_plaintext(PlainFragment, ConnectionStates);
-	#alert{} = Alert ->
-	    Alert
+                                       ReadState0#{sequence_number => Seq + 1}},
+	    {decode_inner_plaintext(PlainFragment), ConnectionStates}
     end;
+
+%% 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},
@@ -137,7 +153,7 @@ decode_cipher_text(#ssl_tls{type = Type,
               fragment = CipherFragment}, ConnnectionStates0};
 decode_cipher_text(#ssl_tls{type = Type}, _) ->
     %% Version mismatch is already asserted
-    ?ALERT_REC(?FATAL, ?BAD_RECORD_MAC, {record_typ_mismatch, Type}).
+    ?ALERT_REC(?FATAL, ?BAD_RECORD_MAC, {record_type_mismatch, Type}).
 
 %%--------------------------------------------------------------------
 %%% Internal functions
@@ -170,62 +186,61 @@ encode_plain_text(#inner_plaintext{
                      content = Data,
                      type = Type,
                      zeros = Zeros
-                    }, #{cipher_state := CipherS0,
+                    }, #{cipher_state := #cipher_state{key= Key,
+                                                       iv = IV,
+                                                       tag_len = TagLen},
                          sequence_number := Seq,
                          security_parameters :=
                              #security_parameters{
-                                cipher_type = ?AEAD}
-                        } = WriteState0) ->
-    PlainText = <<Data/binary, ?BYTE(Type), Zeros/binary>>,
-    AAD = start_additional_data(),
-    CipherS1 = ssl_cipher:nonce_seed(<<?UINT64(Seq)>>, CipherS0),
-    {Encoded, WriteState} = cipher_aead(PlainText, WriteState0#{cipher_state => CipherS1}, AAD),
-    {#tls_cipher_text{opaque_type = Type,
-                      legacy_version = {3,3},
-                      encoded_record = Encoded}, WriteState};
+                                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}
-                        } = WriteState0) ->
+                        }) ->
     %% 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,
+    #tls_cipher_text{opaque_type = Type,
                       legacy_version = {3,3},
-                      encoded_record = Data}, WriteState0};
+                      encoded_record = Data};
 
 encode_plain_text(_, CS) ->
     exit({cs, CS}).
 
-start_additional_data() ->
-    {MajVer, MinVer} = ?LEGACY_VERSION,
-    <<?BYTE(?OPAQUE_TYPE), ?BYTE(MajVer), ?BYTE(MinVer)>>.
+additional_data(Length) ->
+    <<?BYTE(?OPAQUE_TYPE), ?BYTE(3), ?BYTE(3),?UINT16(Length)>>.
 
-end_additional_data(AAD, Len) ->
-    <<AAD/binary, ?UINT16(Len)>>.
-
-nonce(#cipher_state{nonce = Nonce, iv = IV}) ->
-    Len = size(IV),
-    crypto:exor(<<Nonce:Len/bytes>>, IV).
-
-cipher_aead(Fragment,
-	    #{cipher_state := CipherS0,
-	      security_parameters :=
-		  #security_parameters{bulk_cipher_algorithm =
-					   BulkCipherAlgo}
-	     } = WriteState0, AAD) ->
-    {CipherFragment, CipherS1} =
-	cipher_aead(BulkCipherAlgo, CipherS0, AAD, Fragment),
-    {CipherFragment,  WriteState0#{cipher_state => CipherS1}}.
+%% 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(Type, #cipher_state{key=Key} = CipherState, AAD0, Fragment) ->
-    AAD = end_additional_data(AAD0, erlang:iolist_size(Fragment)),
-    Nonce = nonce(CipherState),
-    {Content, CipherTag} = ssl_cipher:aead_encrypt(Type, Key, Nonce, Fragment, AAD),
-    {<<Content/binary, CipherTag/binary>>, CipherState}.
+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),
+    <<Content/binary, CipherTag/binary>>.
 
 encode_tls_cipher_text(#tls_cipher_text{opaque_type = Type,
                                         legacy_version = {MajVer, MinVer},
@@ -234,13 +249,14 @@ encode_tls_cipher_text(#tls_cipher_text{opaque_type = Type,
     {[<<?BYTE(Type), ?BYTE(MajVer), ?BYTE(MinVer), ?UINT16(Length)>>, Encoded],
      Write#{sequence_number => Seq +1}}.
 
-decipher_aead(Type, #cipher_state{key = Key} = CipherState, AAD0, CipherFragment) ->
+decipher_aead(CipherFragment, BulkCipherAlgo, Key, Seq, IV, TagLen) ->
     try
-        Nonce = nonce(CipherState),
-        {AAD, CipherText, CipherTag} = aead_ciphertext_split(CipherState, CipherFragment, AAD0),
-	case ssl_cipher:aead_decrypt(Type, Key, Nonce, CipherText, CipherTag, AAD) of
+        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, CipherState};
+		Content;
 	    _ ->
                 ?ALERT_REC(?FATAL, ?BAD_RECORD_MAC, decryption_failed)
 	end
@@ -249,39 +265,34 @@ decipher_aead(Type, #cipher_state{key = Key} = CipherState, AAD0, CipherFragment
             ?ALERT_REC(?FATAL, ?BAD_RECORD_MAC, decryption_failed)
     end.
 
-aead_ciphertext_split(#cipher_state{tag_len = Len}, CipherTextFragment, AAD) ->
-    CipherLen = size(CipherTextFragment) - Len,
-    <<CipherText:CipherLen/bytes, CipherTag:Len/bytes>> = CipherTextFragment,
-    {end_additional_data(AAD, CipherLen), CipherText, CipherTag}.
 
-decode_inner_plaintext(PlainText, ConnnectionStates) ->
-    case remove_padding(PlainText) of
-        #alert{} = Alert ->
-            Alert;
-        {Data, Type} ->
-            {#ssl_tls{type = Type,
-                      version = {3,4}, %% Internally use real version
-                      fragment = Data}, ConnnectionStates}
-    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}.
 
-remove_padding(PlainText)->
-    case binary:split(PlainText, <<0>>,  [global, trim]) of
-        [] ->
-            ?ALERT_REC(?FATAL, ?UNEXPECTED_MESSAGE, padding_error);
-        [Content] ->
-            Type = binary:last(Content),
-            split_content(Type, Content, erlang:byte_size(Content) - 1)
+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.
 
-split_content(?HANDSHAKE, _, 0) ->
-    ?ALERT_REC(?FATAL, ?UNEXPECTED_MESSAGE, empty_handshake);
-split_content(?ALERT, _, 0) ->
-    ?ALERT_REC(?FATAL, ?UNEXPECTED_MESSAGE, empty_alert);
-%% For special middlebox compatible case!
-split_content(?CHANGE_CIPHER_SPEC, _, 0) ->
-    ?ALERT_REC(?FATAL, ?UNEXPECTED_MESSAGE, empty_change_cipher_spec);
-split_content(?APPLICATION_DATA = Type, _, 0) ->
-    {Type, <<>>};
-split_content(Type, Content, N) ->
-    <<Data:N/bytes, ?BYTE(Type)>> = Content, 
-    {Type, Data}.
+init_binary(B) ->
+    {Init, _} =
+        split_binary(B, byte_size(B) - 1),
+    Init.
diff --git a/lib/ssl/src/tls_sender.erl b/lib/ssl/src/tls_sender.erl
index 0631ed808a..1f34f9a420 100644
--- a/lib/ssl/src/tls_sender.erl
+++ b/lib/ssl/src/tls_sender.erl
@@ -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
@@ -119,6 +119,15 @@ 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 
@@ -126,6 +135,21 @@ 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 
@@ -242,6 +266,9 @@ 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}, downgrade, #data{connection_states = 
+                                              #{current_write := Write}} = StateData) ->
+    {next_state, death_row, StateData, [{reply,From, {ok, Write}}]};
 connection(internal, {application_packets, From, Data}, StateData) ->
     send_application_data(Data, From, ?FUNCTION_NAME, StateData);
 %%
@@ -359,10 +386,7 @@ send_tls_alert(Alert, #data{negotiated_version = Version,
     {BinMsg, ConnectionStates} =
 	Connection:encode_alert(Alert, Version, ConnectionStates0),
     Connection:send(Transport, Socket, BinMsg),
-    Report = #{direction => outbound,
-               protocol => 'tls_record',
-               message => BinMsg},
-    ssl_logger:debug(LogLevel, Report, #{domain => [otp,ssl,tls_record]}),
+    ssl_logger:debug(LogLevel, outbound, 'tls_record', BinMsg),
     StateData0#data{connection_states = ConnectionStates}.
 
 send_application_data(Data, From, StateName,
@@ -387,18 +411,12 @@ send_application_data(Data, From, StateName,
             StateData = StateData0#data{connection_states = ConnectionStates},
 	    case Connection:send(Transport, Socket, Msgs) of
                 ok when DistHandle =/=  undefined ->
-                    Report = #{direction => outbound,
-                               protocol => 'tls_record',
-                               message => Msgs},
-                    ssl_logger:debug(LogLevel, Report, #{domain => [otp,ssl,tls_record]}),
+                    ssl_logger:debug(LogLevel, outbound, 'tls_record', Msgs),
                     {next_state, StateName, StateData, []};
                 Reason when DistHandle =/= undefined ->
                     {next_state, death_row, StateData, [{state_timeout, 5000, Reason}]};
                 ok ->
-                    Report = #{direction => outbound,
-                               protocol => 'tls_record',
-                               message => Msgs},
-                    ssl_logger:debug(LogLevel, Report, #{domain => [otp,ssl,tls_record]}),
+                    ssl_logger:debug(LogLevel, outbound, 'tls_record', Msgs),
                     {next_state, StateName, StateData,  [{reply, From, ok}]};
                 Result ->
                     {next_state, StateName, StateData,  [{reply, From, Result}]}
diff --git a/lib/ssl/src/tls_v1.erl b/lib/ssl/src/tls_v1.erl
index 83dd7585dd..f103f3218b 100644
--- a/lib/ssl/src/tls_v1.erl
+++ b/lib/ssl/src/tls_v1.erl
@@ -36,7 +36,15 @@
          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]).
+-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 |
@@ -56,7 +64,7 @@
 
 %% TLS 1.3 ---------------------------------------------------
 -spec derive_secret(Secret::binary(), Label::binary(),
-                    Messages::binary(), Algo::ssl_cipher_format:hash()) -> Key::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,
@@ -64,19 +72,28 @@ derive_secret(Secret, Label, Messages, Algo) ->
 
 -spec hkdf_expand_label(Secret::binary(), Label0::binary(),
                         Context::binary(), Length::integer(),  
-                        Algo::ssl_cipher_format:hash()) -> KeyingMaterial::binary().
+                        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;
-    Content = << <<"tls13">>/binary, Label0/binary, Context/binary>>,
-    Len = size(Content),
-    HkdfLabel = <<?UINT16(Len), Content/binary>>,
-    hkdf_expand(Secret, HkdfLabel, Length, Algo).
-    
--spec hkdf_extract(MacAlg::ssl_cipher_format:hash(), Salt::binary(), 
+    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) -> 
@@ -84,11 +101,17 @@ hkdf_extract(MacAlg, Salt, KeyingMaterial) ->
 
 
 -spec hkdf_expand(PseudoRandKey::binary(), ContextInfo::binary(),
-                  Length::integer(), Algo::ssl_cipher_format:hash()) -> KeyingMaterial::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  ---------------------------------------------------
@@ -235,6 +258,173 @@ setup_keys(Version, PrfAlgo, MasterSecret, ServerRandom, ClientRandom, HashSize,
      ServerWriteKey, ClientIV, ServerIV}.
 %% TLS v1.2  ---------------------------------------------------
 
+%% 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().
@@ -254,7 +444,7 @@ mac_hash(Method, Mac_write_secret, Seq_num, Type, {Major, Minor},
 
 %% TODO 1.3 same as above?
 
--spec suites(1|2|3|4) -> [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 ->
     [
@@ -315,7 +505,17 @@ suites(4) ->
      %% Not supported
      %% ?TLS_AES_128_CCM_SHA256,
      %% ?TLS_AES_128_CCM_8_SHA256
-    ] ++ suites(3).
+    ] ++ 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);
@@ -347,7 +547,9 @@ signature_algs({3, 3}, HashSigns) ->
     lists:reverse(Supported).
 
 default_signature_algs({3, 4} = Version) ->
-    default_signature_schemes(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},
@@ -373,15 +575,23 @@ signature_schemes(Version, SignatureSchemes) when is_tuple(Version)
     Hashes = proplists:get_value(hashs, CryptoSupports),
     PubKeys = proplists:get_value(public_keys, CryptoSupports),
     Curves = proplists:get_value(curves, CryptoSupports),
-    Fun = fun (Scheme, Acc) ->
+    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_pkcs1 ->
+                                 rsa;
+                             rsa_pss_rsae when RSAPSSSupported ->
+                                 rsa;
+                             rsa_pss_pss when RSAPSSSupported ->
+                                 rsa;
                              S -> S
                          end,
                   Hash = case Hash0 of
-                             sha1 -> sha;
+                             sha1 ->
+                                 sha;
                              H -> H
                          end,
                   case proplists:get_bool(Sign, PubKeys)
@@ -394,7 +604,10 @@ signature_schemes(Version, SignatureSchemes) when is_tuple(Version)
                           [Scheme | Acc];
                       false ->
                           Acc
-                  end
+                  end;
+              %% Special clause for filtering out the legacy hash-sign tuples.
+              (_ , Acc) ->
+                  Acc
           end,
     Supported = lists:foldl(Fun, [], SignatureSchemes),
     lists:reverse(Supported);
@@ -403,22 +616,29 @@ signature_schemes(_, _) ->
 
 default_signature_schemes(Version) ->
     Default = [
-               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,
+               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,
-               rsa_pss_pss_sha256,
-               rsa_pss_pss_sha384,
-               rsa_pss_pss_sha512,
-               rsa_pkcs1_sha1,
-               ecdsa_sha1
+
+               %% 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).
 
@@ -553,7 +773,9 @@ ecc_curves(_Minor, TLSCurves) ->
 
 -spec groups(4 | all | default) -> [group()].
 groups(all) ->
-    [secp256r1,
+    [x25519,
+     x448,
+     secp256r1,
      secp384r1,
      secp521r1,
      ffdhe2048,
@@ -562,27 +784,33 @@ groups(all) ->
      ffdhe6144,
      ffdhe8192];
 groups(default) ->
-    [secp256r1,
-     secp384r1,
-     secp521r1,
-     ffdhe2048];
+    [x25519,
+     x448,
+     secp256r1,
+     secp384r1];
 groups(Minor) ->
     TLSGroups = groups(all),
     groups(Minor, TLSGroups).
 %%
 -spec groups(4, [group()]) -> [group()].
 groups(_Minor, TLSGroups) ->
-    %% TODO: Adding FFDHE groups to crypto?
-    CryptoGroups = crypto:ec_curves() ++ [ffdhe2048,ffdhe3072,ffdhe4096,ffdhe6144,ffdhe8192],
+    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;
@@ -592,6 +820,8 @@ 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;
diff --git a/lib/ssl/test/Makefile b/lib/ssl/test/Makefile
index a4adc7561b..57b74115ed 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
diff --git a/lib/ssl/test/make_certs.erl b/lib/ssl/test/make_certs.erl
index 578f6a731a..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
diff --git a/lib/ssl/test/property_test/ssl_eqc_handshake.erl b/lib/ssl/test/property_test/ssl_eqc_handshake.erl
index 6ffb6d311f..38a4b7fb11 100644
--- a/lib/ssl/test/property_test/ssl_eqc_handshake.erl
+++ b/lib/ssl/test/property_test/ssl_eqc_handshake.erl
@@ -96,7 +96,7 @@ tls_msg(?'TLS_v1.3'= Version) ->
            encrypted_extensions(),
            certificate_1_3(),
            %%certificate_request_1_3,
-           %%certificate_verify()
+           certificate_verify_1_3(),
            finished(),
            key_update()
           ]);
@@ -160,7 +160,14 @@ certificate_1_3() ->
      ?LET(Certs, certificate_chain(),
           #certificate_1_3{
              certificate_request_context = certificate_request_context(),
-             entries = certificate_entries(Certs, [])  
+             certificate_list = certificate_entries(Certs, [])
+            }).
+
+certificate_verify_1_3() ->
+     ?LET(Certs, certificate_chain(),
+          #certificate_verify_1_3{
+             algorithm = sig_scheme(),
+             signature = signature()
             }).
 
 finished() ->
@@ -326,7 +333,7 @@ extensions(?'TLS_v1.3' = Version, client_hello) ->
            %% oneof([psk_key_exchange_modes(), undefined]),
            %% oneof([early_data(), undefined]),
            %% oneof([cookie(), undefined]),
-           oneof([client_hello_versions(Version), undefined]),
+           oneof([client_hello_versions(Version)]),
            %% oneof([cert_authorities(), undefined]),
            %% oneof([post_handshake_auth(), undefined]),
            oneof([signature_algs_cert(), undefined])
@@ -403,7 +410,7 @@ extensions(?'TLS_v1.3' = Version, server_hello) ->
          {
           oneof([key_share(server_hello), undefined]),
           %% oneof([pre_shared_keys(),  undefined]),
-          oneof([server_hello_selected_version(), undefined])
+          oneof([server_hello_selected_version()])
          },
          maps:filter(fun(_, undefined) ->
                              false;
@@ -511,10 +518,48 @@ sig_scheme_list() ->
             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}],
-                [{3,3},{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});
@@ -543,7 +588,10 @@ choose_certificate_chain(#{server_config := ServerConf,
     oneof([certificate_chain(ServerConf), certificate_chain(ClientConf)]).
 
 certificate_request_context() ->
-    <<>>.
+    oneof([<<>>,
+           <<1>>,
+           <<"foobar">>
+          ]).
 certificate_entries([], Acc) ->
     lists:reverse(Acc);
 certificate_entries([Cert | Rest], Acc) ->
@@ -734,10 +782,13 @@ key_share_entry_list(N, Pool, Acc) ->
           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 ->
+       Group =:= secp521r1 orelse
+       Group =:= x448 orelse
+       Group =:= x25519 ->
     #'ECPrivateKey'{publicKey = PublicKey} =
         public_key:generate_key({namedCurve, secp256r1}),
     PublicKey;
diff --git a/lib/ssl/test/ssl.spec b/lib/ssl/test/ssl.spec
index 5e65bfcfe6..24272327c3 100644
--- a/lib/ssl/test/ssl.spec
+++ b/lib/ssl/test/ssl.spec
@@ -3,6 +3,7 @@
 
 {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,throughput,"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 c2ce6df59b..1ed1fdef4a 100644
--- a/lib/ssl/test/ssl_basic_SUITE.erl
+++ b/lib/ssl/test/ssl_basic_SUITE.erl
@@ -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'},
@@ -67,6 +69,7 @@ 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()},
@@ -166,6 +169,7 @@ api_tests() ->
      socket_options,
      cipher_suites,
      handshake_continue,
+     handshake_continue_timeout,
      hello_client_cancel,
      hello_server_cancel
     ].
@@ -266,6 +270,15 @@ 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_s_client].
+
 %%--------------------------------------------------------------------
 init_per_suite(Config0) ->
     catch crypto:stop(),
@@ -295,7 +308,8 @@ 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) ->
@@ -654,8 +668,8 @@ 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 +695,34 @@ 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 +744,12 @@ 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 +791,8 @@ 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 +873,30 @@ 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 +1218,8 @@ 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 +1480,8 @@ 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),
 
@@ -2118,15 +2140,21 @@ 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 +2392,8 @@ 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 +2408,28 @@ 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 =
@@ -2656,8 +2685,7 @@ 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"}}).
+    ssl_test_lib:check_server_alert(Server, Client, insufficient_security).
 
 %%--------------------------------------------------------------------
 ciphers_ecdsa_signed_certs() ->
@@ -2693,175 +2721,69 @@ ciphers_ecdh_rsa_signed_certs_openssl_names(Config) when is_list(Config) ->
 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, []}}},
-    
-    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, []}}},
+    ClientOpts = ssl_test_lib:ssl_options(client_rsa_verify_opts, Config),
+    ServerOpts = ssl_test_lib:ssl_options(server_rsa_opts, Config),
     
-    %% 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 +2792,16 @@ 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.     
 
 %%--------------------------------------------------------------------
@@ -3615,8 +3537,7 @@ 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).
 
 %%--------------------------------------------------------------------
 
@@ -3980,8 +3901,8 @@ 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(10, StaticEnv),
     %% Fake tcp error
     Pid ! {tcp_error, Socket, etimedout},
 
@@ -4131,6 +4052,8 @@ rizzo(Config) when is_list(Config) ->
                                          {cipher, 
                                           fun(rc4_128) -> 
                                                   false;
+                                             (chacha20_poly1305) ->
+                                                  false;
                                              (_) -> 
                                                   true 
                                           end}]),
@@ -4173,6 +4096,9 @@ 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 +4240,7 @@ 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 +4401,968 @@ 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_s_client() ->
+     [{doc,"Test TLS 1.3 basic connection between ssl server and openssl s_client"}].
+
+tls13_basic_ssl_s_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).
+
 
 %%--------------------------------------------------------------------
 %% Internal functions ------------------------------------------------
@@ -4490,8 +5377,8 @@ 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 +5521,24 @@ 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 +5562,7 @@ 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 +5572,7 @@ 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 +5747,11 @@ 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 +5768,6 @@ 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.
@@ -5008,16 +5853,16 @@ run_suites(Ciphers, Config, Type) ->
     {ClientOpts, ServerOpts} =
 	case Type of
 	    rsa ->
-		{ssl_test_lib:ssl_options(client_verification_opts, Config),
+		{ssl_test_lib:ssl_options(client_rsa_verify_opts, Config),
                  [{ciphers, Ciphers} |
-                  ssl_test_lib:ssl_options(server_verification_opts, Config)]};
+                  ssl_test_lib:ssl_options(server_rsa_opts, Config)]};
 	    dsa ->
-		{ssl_test_lib:ssl_options(client_verification_opts, Config),
+		{ssl_test_lib:ssl_options(client_dsa_verify_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),
+		{ssl_test_lib:ssl_options(client_rsa_verify_opts, Config),
 		 [{ciphers, Ciphers} |
                   ssl_test_lib:ssl_options([], Config)]};
 	    psk ->
@@ -5039,46 +5884,50 @@ run_suites(Ciphers, Config, Type) ->
 		 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)};
+                 [{ciphers, Ciphers} |
+		 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)};
+                 [{ciphers, Ciphers} |
+		 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)};
+                 [{ciphers, Ciphers} |
+		 ssl_test_lib:ssl_options(server_srp_dsa, Config)]};
 	    ecdsa ->
-		{ssl_test_lib:ssl_options(client_verification_opts, Config),
+		{ssl_test_lib:ssl_options(client_ecdsa_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)};
+		{ssl_test_lib:ssl_options(client_ecdh_rsa_opts, Config),
+                 [{ciphers, Ciphers} |
+                  ssl_test_lib:ssl_options(server_ecdh_rsa_opts, Config)]};
 	    rc4_rsa ->
-		{ssl_test_lib:ssl_options(client_verification_opts, Config),
+		{ssl_test_lib:ssl_options(client_rsa_verify_opts, Config),
 		 [{ciphers, Ciphers} |
-		  ssl_test_lib:ssl_options(server_verification_opts, Config)]};
+		  ssl_test_lib:ssl_options(server_rsa_verify_opts, Config)]};
 	    rc4_ecdh_rsa ->
-		{ssl_test_lib:ssl_options(client_verification_opts, Config),
+		{ssl_test_lib:ssl_options(client_ecdh_rsa_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),
+		{ssl_test_lib:ssl_options(client_rsa_verify_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),
+		{ssl_test_lib:ssl_options(client_rsa_verify_opts, Config),
 		 [{ciphers, Ciphers} |
 		  ssl_test_lib:ssl_options(server_verification_opts, Config)]};
 	    des_rsa ->
-		{ssl_test_lib:ssl_options(client_verification_opts, Config),
+		{ssl_test_lib:ssl_options(client_rsa_verify_opts, Config),
 		 [{ciphers, Ciphers} |
-		  ssl_test_lib:ssl_options(server_verification_opts, Config)]};
+		  ssl_test_lib:ssl_options(server_rsa_verify_opts, Config)]};
             chacha_rsa ->
-                {ssl_test_lib:ssl_options(client_verification_opts, Config),
+                {ssl_test_lib:ssl_options(client_rsa_verify_opts, Config),
                  [{ciphers, Ciphers} |
-                  ssl_test_lib:ssl_options(server_verification_opts, Config)]};
+                  ssl_test_lib:ssl_options(server_rsa_verify_opts, Config)]};
             chacha_ecdsa ->
-               	{ssl_test_lib:ssl_options(client_verification_opts, Config),
+               	{ssl_test_lib:ssl_options(client_ecdsa_opts, Config),
                  [{ciphers, Ciphers} |
                   ssl_test_lib:ssl_options(server_ecdsa_opts, Config)]} 
 	end,
@@ -5176,23 +6025,28 @@ 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 +6151,31 @@ 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 8eace4d328..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]}
     ].
@@ -52,29 +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)
@@ -120,6 +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,
diff --git a/lib/ssl/test/ssl_certificate_verify_SUITE.erl b/lib/ssl/test/ssl_certificate_verify_SUITE.erl
index bddcc2514d..8690faed54 100644
--- a/lib/ssl/test/ssl_certificate_verify_SUITE.erl
+++ b/lib/ssl/test/ssl_certificate_verify_SUITE.erl
@@ -298,15 +298,8 @@ 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 +358,8 @@ 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 +432,7 @@ 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 +463,7 @@ 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() ->
@@ -535,14 +502,8 @@ 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() ->
@@ -581,16 +542,8 @@ 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 +573,7 @@ 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 +679,8 @@ 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 +711,7 @@ 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 +851,7 @@ 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 +886,7 @@ 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 +972,7 @@ 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 +1122,7 @@ 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_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_handshake_SUITE.erl b/lib/ssl/test/ssl_handshake_SUITE.erl
index e39313e5cd..1b432970b6 100644
--- a/lib/ssl/test/ssl_handshake_SUITE.erl
+++ b/lib/ssl/test/ssl_handshake_SUITE.erl
@@ -26,6 +26,7 @@
 
 -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").
@@ -42,7 +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, signature_algorithms].
+	  unorded_chain, signature_algorithms,
+	  encode_decode_srp].
 
 %%--------------------------------------------------------------------
 init_per_suite(Config) ->
@@ -124,13 +126,13 @@ 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
-    Extensions = ssl_handshake:decode_hello_extensions(Extension, {3,2}, client),
+    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>>, {3,2}, client),
+    Extensions = ssl_handshake:decode_hello_extensions(<<FourByteUnknown/binary, Renegotiation/binary>>, {3,2}, {3,2}, client),
     #{renegotiation_info := #renegotiation_info{renegotiated_connection = <<0>>}} = Extensions.
 
 
@@ -145,12 +147,12 @@ encode_single_hello_sni_extension_correctly(_Config) ->
 decode_single_hello_sni_extension_correctly(_Config) ->
     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, {3,3}, client),
+    Decoded = ssl_handshake:decode_hello_extensions(SNI, {3,3}, {3,3}, client),
     #{sni := #sni{hostname = "test.com"}} = Decoded.
 
 decode_empty_server_sni_correctly(_Config) ->
     SNI = <<?UINT16(?SNI_EXT),?UINT16(0)>>,
-    Decoded = ssl_handshake:decode_hello_extensions(SNI, {3,3}, server),
+    Decoded = ssl_handshake:decode_hello_extensions(SNI, {3,3}, {3,3}, server),
     #{sni := #sni{hostname = ""}} = Decoded.
 
 
@@ -190,6 +192,30 @@ 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),
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_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 5939800001..27b9c258a0 100644
--- a/lib/ssl/test/ssl_payload_SUITE.erl
+++ b/lib/ssl/test/ssl_payload_SUITE.erl
@@ -64,14 +64,18 @@ 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(),
     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)),
+	    {ok, _} =
+                make_certs:all(
+                  proplists:get_value(data_dir, Config),
+                  proplists:get_value(priv_dir, Config)),
 	    ssl_test_lib:cert_options(Config)
     catch _:_  ->
 	    {skip, "Crypto did not start"}
@@ -103,12 +107,13 @@ end_per_group(GroupName, Config) ->
             Config
     end.
 
-init_per_testcase(TestCase, Config) when TestCase == server_echos_passive_huge;
-					 TestCase == server_echos_active_once_huge;
-					 TestCase == server_echos_active_huge;
-					 TestCase == client_echos_passive_huge;
-					 TestCase == client_echos_active_once_huge;
-					 TestCase == client_echos_active_huge ->
+init_per_testcase(TestCase, Config)
+  when TestCase == server_echos_passive_huge;
+       TestCase == server_echos_active_once_huge;
+       TestCase == server_echos_active_huge;
+       TestCase == client_echos_passive_huge;
+       TestCase == client_echos_active_once_huge;
+       TestCase == client_echos_active_huge ->
     case erlang:system_info(system_architecture) of
 	"sparc-sun-solaris2.10" ->
 	    {skip,"Will take to long time on an old Sparc"};
@@ -117,12 +122,13 @@ init_per_testcase(TestCase, Config) when TestCase == server_echos_passive_huge;
 	    Config
     end;
 
-init_per_testcase(TestCase, Config) when TestCase == server_echos_passive_big;
-					 TestCase == server_echos_active_once_big;
-					 TestCase == server_echos_active_big;
-					 TestCase == client_echos_passive_big;
-					 TestCase == client_echos_active_once_big;
-					 TestCase == client_echos_active_big ->
+init_per_testcase(TestCase, Config)
+  when TestCase == server_echos_passive_big;
+       TestCase == server_echos_active_once_big;
+       TestCase == server_echos_active_big;
+       TestCase == client_echos_passive_big;
+       TestCase == client_echos_active_once_big;
+       TestCase == client_echos_active_big ->
     ct:timetrap({seconds, 60}),
     Config;
 
@@ -144,11 +150,10 @@ server_echos_passive_small(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),
-
-    Str = "1234567890", 
-    
-    server_echos_passive(Str, 1000, ClientOpts, ServerOpts, 
-			 ClientNode, ServerNode, Hostname).
+    %%
+    Data = binary:copy(<<"1234567890">>, 100),
+    server_echos_passive(
+      Data, ClientOpts, ServerOpts, ClientNode, ServerNode, Hostname).
 
 %%--------------------------------------------------------------------
 
@@ -160,11 +165,10 @@ server_echos_active_once_small(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),
-
-    Str = "1234567890", 
-    
-    server_echos_active_once(Str, 1000, ClientOpts, ServerOpts, 
-			     ClientNode, ServerNode, Hostname).
+    %%
+    Data = binary:copy(<<"1234567890">>, 100),
+    server_echos_active_once(
+      Data, ClientOpts, ServerOpts, ClientNode, ServerNode, Hostname).
 
 %%--------------------------------------------------------------------
 
@@ -176,11 +180,10 @@ server_echos_active_small(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),
-
-    Str = "1234567890", 
-    
-    server_echos_active(Str, 1000, ClientOpts, ServerOpts, 
-			ClientNode, ServerNode, Hostname).
+    %%
+    Data = binary:copy(<<"1234567890">>, 100),
+    server_echos_active(
+      Data, ClientOpts, ServerOpts, ClientNode, ServerNode, Hostname).
 
 %%--------------------------------------------------------------------
 client_echos_passive_small() ->
@@ -191,11 +194,10 @@ client_echos_passive_small(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),
-
-    Str = "1234567890", 
-
-    client_echos_passive(Str, 1000, ClientOpts, ServerOpts, ClientNode, 
-			 ServerNode, Hostname).
+    %%
+    Data = binary:copy(<<"1234567890">>, 100),
+    client_echos_passive(
+      Data, ClientOpts, ServerOpts, ClientNode, ServerNode, Hostname).
 
 %%--------------------------------------------------------------------
 client_echos_active_once_small() ->
@@ -206,11 +208,10 @@ client_echos_active_once_small(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),
-
-    Str = "1234567890", 
-    
-    client_echos_active_once(Str, 1000, ClientOpts, ServerOpts, ClientNode, 
-			     ServerNode, Hostname).
+    %%
+    Data = binary:copy(<<"1234567890">>, 100),
+    client_echos_active_once(
+      Data, ClientOpts, ServerOpts, ClientNode, ServerNode, Hostname).
    
 %%--------------------------------------------------------------------
 client_echos_active_small() ->
@@ -221,11 +222,10 @@ client_echos_active_small(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),
-
-    Str = "1234567890",     
-
-    client_echos_active(Str, 1000, ClientOpts, ServerOpts, ClientNode, 
-			ServerNode, Hostname).
+    %%
+    Data = binary:copy(<<"1234567890">>, 100),
+    client_echos_active(
+      Data, ClientOpts, ServerOpts, ClientNode, ServerNode, Hostname).
 
 
 %%--------------------------------------------------------------------
@@ -237,11 +237,10 @@ server_echos_passive_big(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),
-
-    Str = "1234567890", 
-    
-    server_echos_passive(Str, 50000, ClientOpts, ServerOpts, ClientNode, 
-			 ServerNode, Hostname).
+    %%
+    Data = binary:copy(<<"1234567890">>, 5000),
+    server_echos_passive(
+      Data, ClientOpts, ServerOpts, ClientNode, ServerNode, Hostname).
 
 %%--------------------------------------------------------------------
 
@@ -253,11 +252,10 @@ server_echos_active_once_big(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),
-
-    Str = "1234567890", 
-    
-    server_echos_active_once(Str, 50000, ClientOpts, ServerOpts, ClientNode, 
-			     ServerNode, Hostname).
+    %%
+    Data = binary:copy(<<"1234567890">>, 5000),
+    server_echos_active_once(
+      Data, ClientOpts, ServerOpts, ClientNode, ServerNode, Hostname).
 
 %%--------------------------------------------------------------------
 
@@ -269,11 +267,10 @@ server_echos_active_big(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),
-
-    Str = "1234567890", 
-    
-    server_echos_active(Str, 50000, ClientOpts, ServerOpts, ClientNode, 
-			ServerNode, Hostname).
+    %%
+    Data = binary:copy(<<"1234567890">>, 5000),
+    server_echos_active(
+      Data, ClientOpts, ServerOpts, ClientNode, ServerNode, Hostname).
 
 %%--------------------------------------------------------------------
 client_echos_passive_big() ->
@@ -284,11 +281,10 @@ client_echos_passive_big(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),
-
-    Str = "1234567890", 
-
-    client_echos_passive(Str, 50000, ClientOpts, ServerOpts, ClientNode, 
-			 ServerNode, Hostname).
+    %%
+    Data = binary:copy(<<"1234567890">>, 5000),
+    client_echos_passive(
+      Data, ClientOpts, ServerOpts, ClientNode, ServerNode, Hostname).
 
 %%--------------------------------------------------------------------
 client_echos_active_once_big() ->
@@ -299,11 +295,10 @@ client_echos_active_once_big(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),
-
-    Str = "1234567890", 
-
-    client_echos_active_once(Str, 50000, ClientOpts, ServerOpts, ClientNode, 
-			     ServerNode, Hostname).
+    %%
+    Data = binary:copy(<<"1234567890">>, 5000),
+    client_echos_active_once(
+      Data, ClientOpts, ServerOpts, ClientNode, ServerNode, Hostname).
    
 %%--------------------------------------------------------------------
 client_echos_active_big() ->
@@ -314,11 +309,10 @@ client_echos_active_big(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),
-
-    Str = "1234567890", 
-    
-    client_echos_active(Str, 50000, ClientOpts, ServerOpts, ClientNode, 
-			ServerNode, Hostname).
+    %%
+    Data = binary:copy(<<"1234567890">>, 5000),
+    client_echos_active(
+      Data, ClientOpts, ServerOpts, ClientNode, ServerNode, Hostname).
 
 %%--------------------------------------------------------------------
 server_echos_passive_huge() ->
@@ -329,11 +323,10 @@ server_echos_passive_huge(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),
-
-    Str = "1234567890", 
-    
-    server_echos_passive(Str, 500000, ClientOpts, ServerOpts, ClientNode, 
-			 ServerNode, Hostname).
+    %%
+    Data = binary:copy(<<"1234567890">>, 50000),
+    server_echos_passive(
+      Data, ClientOpts, ServerOpts, ClientNode, ServerNode, Hostname).
 
 %%--------------------------------------------------------------------
 server_echos_active_once_huge() ->
@@ -344,11 +337,10 @@ server_echos_active_once_huge(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),
-
-    Str = "1234567890", 
-    
-    server_echos_active_once(Str, 500000, ClientOpts, ServerOpts, ClientNode, 
-			     ServerNode, Hostname).
+    %%
+    Data = binary:copy(<<"1234567890">>, 50000),
+    server_echos_active_once(
+      Data, ClientOpts, ServerOpts, ClientNode, ServerNode, Hostname).
 
 %%--------------------------------------------------------------------
 server_echos_active_huge() ->
@@ -359,11 +351,10 @@ server_echos_active_huge(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),
-
-    Str = "1234567890", 
-    
-    server_echos_active(Str, 500000, ClientOpts, ServerOpts, ClientNode, 
-			ServerNode, Hostname).
+    %%
+    Data = binary:copy(<<"1234567890">>, 50000),
+    server_echos_active(
+      Data, ClientOpts, ServerOpts, ClientNode, ServerNode, Hostname).
 
 %%--------------------------------------------------------------------
 client_echos_passive_huge() ->
@@ -374,10 +365,10 @@ client_echos_passive_huge(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),
-
-    Str = "1234567890", 
-    client_echos_passive(Str, 500000, ClientOpts, ServerOpts, ClientNode, 
-			 ServerNode, Hostname).
+    %%
+    Data = binary:copy(<<"1234567890">>, 50000),
+    client_echos_passive(
+      Data, ClientOpts, ServerOpts, ClientNode, ServerNode, Hostname).
 
 %%--------------------------------------------------------------------
 client_echos_active_once_huge() ->
@@ -388,10 +379,10 @@ client_echos_active_once_huge(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),
-
-    Str = "1234567890", 
-    client_echos_active_once(Str, 500000, ClientOpts, ServerOpts, ClientNode, 
-			     ServerNode, Hostname).
+    %%
+    Data = binary:copy(<<"1234567890">>, 50000),
+    client_echos_active_once(
+      Data, ClientOpts, ServerOpts, ClientNode, ServerNode, Hostname).
    
 %%--------------------------------------------------------------------
 client_echos_active_huge() ->
@@ -402,293 +393,264 @@ client_echos_active_huge(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_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"}].
 
-    Str = "1234567890", 
-    client_echos_active(Str, 500000, ClientOpts, ServerOpts, ClientNode,
-			ServerNode, Hostname).
+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 ------------------------------------------------
 %%--------------------------------------------------------------------
 
-server_echos_passive(Data, Length, ClientOpts, ServerOpts, 
-		     ClientNode, ServerNode, Hostname) ->
-    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0}, 
-					{from, self()}, 
-					{mfa, 
-					 {?MODULE, echoer, 
-					  [Data, Length]}},
-					{options, 
-					 [{active, false},{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, 
-					 {?MODULE, sender, 
-					       [Data, 
-						Length]}},
-					{options, 
-					 [{active, false}, {mode, binary} |
-					  ClientOpts]}]),
+server_echos_passive(
+  Data, ClientOpts, ServerOpts, ClientNode, ServerNode, Hostname) ->
+    Length = byte_size(Data),
+    Server =
+        ssl_test_lib:start_server(
+          [{node, ServerNode}, {port, 0},
+           {from, self()},
+           {mfa, {?MODULE, echoer, [Length]}},
+           {options, [{active, false}, {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, {?MODULE, sender, [Data]}},
+           {options, [{active, false}, {mode, binary} | ClientOpts]}]),
+    %%
     ssl_test_lib:check_result(Server, ok, Client, ok),
-    
+    %%
     ssl_test_lib:close(Server),
     ssl_test_lib:close(Client).
 
 
-server_echos_active_once(Data, Length, ClientOpts, ServerOpts, ClientNode,
-			 ServerNode, Hostname) ->
-    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0}, 
-					{from, self()}, 
-					{mfa, 
-					 {?MODULE, echoer_once, 
-					  [Data, Length]}},
-					{options, [{active, once},
-						   {mode, binary}| 
-						   ServerOpts]}]),
+server_echos_active_once(
+  Data, ClientOpts, ServerOpts, ClientNode, ServerNode, Hostname) ->
+    Length = byte_size(Data),
+    Server =
+        ssl_test_lib:start_server(
+          [{node, ServerNode}, {port, 0},
+           {from, self()},
+           {mfa, {?MODULE, echoer_active_once, [Length]}},
+           {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, 
-					 {?MODULE, sender_once, 
-					  [Data, Length]}},
-					{options, [{active, once}, 
-						   {mode, binary} | 
-						   ClientOpts]}]),
+    Client =
+        ssl_test_lib:start_client(
+          [{node, ClientNode}, {port, Port},
+           {host, Hostname},
+           {from, self()},
+           {mfa, {?MODULE, sender_active_once, [Data]}},
+           {options, [{active, once}, {mode, binary} | ClientOpts]}]),
+    %%
     ssl_test_lib:check_result(Server, ok, Client, ok),
-    
+    %%
     ssl_test_lib:close(Server),
     ssl_test_lib:close(Client).
 
 
-server_echos_active(Data, Length, ClientOpts, ServerOpts, 
-		    ClientNode, ServerNode, Hostname) ->
-    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0}, 
-					{from, self()}, 
-					{mfa, 
-					 {?MODULE, echoer_active, 
-					  [Data, Length]}},
-					{options,  
-					 [{active, true},
-					  {mode, binary} | ServerOpts]}]),
+server_echos_active(
+  Data, ClientOpts, ServerOpts, ClientNode, ServerNode, Hostname) ->
+    Length = byte_size(Data),
+    Server =
+        ssl_test_lib:start_server(
+          [{node, ServerNode}, {port, 0},
+           {from, self()},
+           {mfa, {?MODULE, echoer_active, [Length]}},
+           {options, [{active, true}, {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, 
-					 {?MODULE, sender_active, 
-					       [Data, 
-						Length]}},
-					{options,  
-					 [{active, true}, {mode, binary}
-					  | ClientOpts]}]),
+    Client =
+        ssl_test_lib:start_client(
+          [{node, ClientNode}, {port, Port},
+           {host, Hostname},
+           {from, self()},
+           {mfa, {?MODULE, sender_active, [Data]}},
+           {options, [{active, true}, {mode, binary} | ClientOpts]}]),
+    %%
     ssl_test_lib:check_result(Server, ok, Client, ok),
-    
+    %%
     ssl_test_lib:close(Server),
     ssl_test_lib:close(Client).
 
-client_echos_passive(Data, Length, ClientOpts, ServerOpts, 
-		     ClientNode, ServerNode, Hostname) ->
-    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0}, 
-					{from, self()}, 
-					{mfa, 
-					 {?MODULE, sender, 
-					  [Data, Length]}},
-					{options, 
-					 [{active, false}, {mode, binary} | 
-					  ServerOpts]}]),
+client_echos_passive(
+  Data, ClientOpts, ServerOpts, ClientNode, ServerNode, Hostname) ->
+    Length = byte_size(Data),
+    Server =
+        ssl_test_lib:start_server(
+          [{node, ServerNode}, {port, 0},
+           {from, self()},
+           {mfa, {?MODULE, sender, [Data]}},
+           {options, [{active, false}, {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, 
-					 {?MODULE, echoer, 
-					       [Data, 
-						Length]}},
-					{options, 
-					 [{active, false}, {mode, binary}
-					  | ClientOpts]}]),
+    Client =
+        ssl_test_lib:start_client(
+          [{node, ClientNode}, {port, Port},
+           {host, Hostname},
+           {from, self()},
+           {mfa, {?MODULE, echoer, [Length]}},
+           {options, [{active, false}, {mode, binary} | ClientOpts]}]),
+    %%
     ssl_test_lib:check_result(Server, ok, Client, ok),
-    
+    %%
     ssl_test_lib:close(Server),
     ssl_test_lib:close(Client).
 
-client_echos_active_once(Data, Length, 
-			 ClientOpts, ServerOpts, ClientNode, ServerNode,
-			 Hostname) ->
-    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0}, 
-					{from, self()}, 
-					{mfa, 
-					 {?MODULE, sender_once, 
-					  [Data, Length]}},
-					{options, [{active, once},
-						   {mode, binary} | 
-						   ServerOpts]}]),
+client_echos_active_once(
+  Data, ClientOpts, ServerOpts, ClientNode, ServerNode, Hostname) ->
+    Length = byte_size(Data),
+    Server =
+        ssl_test_lib:start_server(
+          [{node, ServerNode}, {port, 0},
+           {from, self()},
+           {mfa, {?MODULE, sender_active_once, [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, 
-					 {?MODULE, echoer_once, 
-					  [Data, 
-					   Length]}},
-					{options,[{active, once},
-						  {mode, binary}
-						  | ClientOpts]}]),
+    Client =
+        ssl_test_lib:start_client(
+          [{node, ClientNode}, {port, Port},
+           {host, Hostname},
+           {from, self()},
+           {mfa, {?MODULE, echoer_active_once, [Length]}},
+           {options,[{active, once}, {mode, binary} | ClientOpts]}]),
+    %%
     ssl_test_lib:check_result(Server, ok, Client, ok),
-    
+    %%
     ssl_test_lib:close(Server),
     ssl_test_lib:close(Client).
 
-client_echos_active(Data, Length, ClientOpts, ServerOpts, ClientNode, 
-		    ServerNode,
-			 Hostname) ->
-    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0}, 
-					{from, self()}, 
-					{mfa, 
-					 {?MODULE, sender_active, 
-					  [Data, Length]}},
-					{options, [{active, true}, 
-						   {mode, binary}
-						   | ServerOpts]}]),
+client_echos_active(
+  Data, ClientOpts, ServerOpts, ClientNode, ServerNode, Hostname) ->
+    Length = byte_size(Data),
+    Server =
+        ssl_test_lib:start_server(
+          [{node, ServerNode}, {port, 0},
+           {from, self()},
+           {mfa, {?MODULE, sender_active, [Data]}},
+           {options, [{active, true}, {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, 
-					 {?MODULE, echoer_active, 
-					       [Data, 
-						Length]}},
-					{options, [{active, true},
-						   {mode, binary}
-						   | ClientOpts]}]),
+    Client =
+        ssl_test_lib:start_client(
+          [{node, ClientNode}, {port, Port},
+           {host, Hostname},
+           {from, self()},
+           {mfa, {?MODULE, echoer_active, [Length]}},
+           {options, [{active, true}, {mode, binary} | ClientOpts]}]),
+    %
     ssl_test_lib:check_result(Server, ok, Client, ok),
-    
+    %%
     ssl_test_lib:close(Server),
     ssl_test_lib:close(Client).
 
-send(_, _, _, 0,_) ->
+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, Size, Repeate,F) ->
-    NewData = lists:duplicate(Size div 10, Data),
-    ssl:send(Socket, NewData),
-    F(),
-    send(Socket, Data, Size, Repeate - 1,F).
- 
-sender(Socket, Data, Size) ->
-    ok = send(Socket, Data, Size, 100, fun() -> do_recv(Socket, Data, Size, <<>>, false) end),
+send(Socket, Data, Count, RecvEcho) ->
+    ok = ssl:send(Socket, Data),
+    RecvEcho(),
+    send(Socket, Data, Count - 1, RecvEcho).
+
+send_close(Socket, Data) ->
+    ok = ssl:send(Socket, Data),
+    ssl:close(Socket).
+
+sender(Socket, Data) ->
     ct:log("Sender recv: ~p~n", [ssl:getopts(Socket, [active])]),
-    ok.
-
-sender_once(Socket, Data, Size) ->
-    send(Socket, Data, Size, 100, 
-	 fun() -> do_active_once(Socket, Data, Size, <<>>, false) end),
-    ct:log("Sender active once: ~p~n",
-		       [ssl:getopts(Socket, [active])]),
-    ok.
-
-sender_active(Socket, Data, Size) ->
-    F = fun() -> do_active(Socket, Data, Size, <<>>, false) end,
-    send(Socket, Data, Size, 100, F),
+    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() -> 
+                 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])]),
-    ok.
+    send(Socket, Data, 100,
+         fun() -> 
+                 ssl_test_lib:active_disregard(Socket, byte_size(Data)) 
+         end).
 
-echoer(Socket, Data, Size) ->
+echoer(Socket, Size) ->
     ct:log("Echoer recv: ~p~n", [ssl:getopts(Socket, [active])]),
-    echo(fun() -> do_recv(Socket, Data, Size, <<>>, true) end, 100).
+    echo_recv(Socket, Size * 100).
 
-echoer_once(Socket, Data, Size) ->
-    ct:log("Echoer active once: ~p ~n",
-		       [ssl:getopts(Socket, [active])]),
-    echo(fun() -> do_active_once(Socket, Data, Size, <<>>, true) end, 100).
+echoer_active_once(Socket, Size) ->
+    ct:log("Echoer active once: ~p~n", [ssl:getopts(Socket, [active])]),
+    echo_active_once(Socket, Size * 100).
 
-echoer_active(Socket, Data, Size) ->
+echoer_active(Socket, Size) ->
     ct:log("Echoer active: ~p~n", [ssl:getopts(Socket, [active])]),
-    echo(fun() -> do_active(Socket, Data, Size, <<>>, true) end, 100).
-
-echo(_Fun, 0) -> ok;
-echo(Fun, N) ->
-    Fun(),
-    echo(Fun, N-1).
+    echo_active(Socket, Size * 100).
 
 
-do_recv(_Socket, _Data, 0, _Acc, true) ->
+%% Receive Size bytes
+echo_recv(_Socket, 0) ->
     ok;
-do_recv(_Socket, Data, 0, Acc, false) ->
-    Data = lists:sublist(binary_to_list(Acc), 10);
+echo_recv(Socket, Size) ->
+    {ok, Data} = ssl:recv(Socket, 0),
+    ok = ssl:send(Socket, Data),
+    echo_recv(Socket, Size - byte_size(Data)).
 
-do_recv(Socket, Data, Size, Acc, Echo) ->
-    {ok, NewData} = ssl:recv(Socket, 0),
-    NewSize = size(NewData), 
-    case Echo of
-	true ->
-	    ssl:send(Socket, NewData),
-	    NewSize = size(NewData), 
-	    do_recv(Socket, Data, Size - NewSize, [], Echo);
-	false ->
-	    case size(Acc) < 10 of
-		true ->
-		    do_recv(Socket, Data, Size - NewSize, 
-			    <<Acc/binary, NewData/binary>>, Echo);
-		false ->
-		    do_recv(Socket, Data, Size - NewSize, Acc, Echo) 
-	    end
-    end.
-
-do_active_once(_Socket, _Data, 0, _Acc, true) ->
+%% Receive Size bytes
+echo_active_once(_Socket, 0) ->
     ok;
-do_active_once(_Socket, Data, 0, Acc, false) ->
-    Data = lists:sublist(binary_to_list(Acc), 10);
-
-do_active_once(Socket, Data, Size, Acc, Echo) ->    
-    receive 
-	{ssl, Socket, NewData} ->
-	    NewSize = size(NewData), 
-	    case Echo of
-		true ->
-		    ssl:send(Socket, NewData),
-		    ssl:setopts(Socket, [{active, once}]),
-		    do_active_once(Socket, Data, Size - NewSize, [], Echo);
-		false ->
-		    case size(Acc) < 10 of
-			true ->
-			    ssl:setopts(Socket, [{active, once}]),
-			    do_active_once(Socket, Data, Size - NewSize, 
-					   <<Acc/binary, NewData/binary>>, 
-					   Echo);
-			false ->
-			    ssl:setopts(Socket, [{active, once}]),
-			    do_active_once(Socket, Data, 
-					   Size - NewSize, Acc, Echo) 
-		    end 
-	    end
+echo_active_once(Socket, Size) ->
+    receive
+        {ssl, Socket, Data} ->
+            ok = ssl:send(Socket, Data),
+            NewSize = Size - byte_size(Data),
+            ssl:setopts(Socket, [{active, once}]),
+            echo_active_once(Socket, NewSize)
     end.
-    
-do_active(_Socket, _Data, 0, _Acc, true) ->
+
+%% Receive Size bytes
+echo_active(_Socket, 0) ->
     ok;
-do_active(_Socket, Data, 0, Acc, false) ->
-    Data = lists:sublist(binary_to_list(Acc), 10);
-
-do_active(Socket, Data, Size, Acc, Echo) ->    
-    receive 
-	{ssl, Socket, NewData} ->
-	    NewSize = size(NewData), 
-	    case Echo of
-		true ->
-		    ssl:send(Socket, NewData),
-		    do_active(Socket, Data, Size - NewSize, [], Echo);
-		false ->
-		    case size(Acc) < 10 of
-			true ->
-			    do_active(Socket, Data, Size - NewSize, 
-					   <<Acc/binary, NewData/binary>>, 
-				      Echo);
-			false ->
-			    do_active(Socket, Data, 
-				      Size - NewSize, Acc, Echo) 
-		    end 
-	    end
-    end.
+echo_active(Socket, Size) ->
+    receive
+        {ssl, Socket, Data} ->
+            ok = ssl:send(Socket, Data),
+            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_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..c921dcae4c 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(_) ->
@@ -437,6 +438,37 @@ 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 
@@ -523,7 +555,7 @@ 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 +650,12 @@ 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 +670,11 @@ 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 +685,12 @@ 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 +712,43 @@ 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 +781,7 @@ 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 +864,8 @@ 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 ->
@@ -1064,20 +1104,33 @@ 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_client(openssl, Port, ClientOpts, Config) ->
+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),
-    Version = ssl_test_lib:protocol_version(Config),
     Exe = "openssl",
     Args = ["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"],
 
+    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),
+    Key = proplists:get_value(keyfile, ClientOpts),
+    CA = proplists:get_value(cacertfile, ClientOpts),
+    Version = ssl_test_lib:protocol_version(Config),
+    Exe = "openssl",
+    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 +1144,18 @@ 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),
@@ -1461,19 +1526,10 @@ cipher_result(Socket, 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\n" = active_recv(Socket, length( "Hello\n")),
+    ssl:send(Socket, " world\n"),
+    " world\n" = active_recv(Socket, length(" world\n")),
+    ok.
 
 session_info_result(Socket) ->
     {ok, Info} = ssl:connection_information(Socket,  [session_id, cipher_suite]),
@@ -1546,7 +1602,12 @@ 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 +1653,81 @@ 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) ->
@@ -1817,6 +1925,8 @@ 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 +2269,98 @@ 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).
+    
diff --git a/lib/ssl/test/ssl_to_openssl_SUITE.erl b/lib/ssl/test/ssl_to_openssl_SUITE.erl
index 5a38f5f9c1..df84411b6d 100644
--- a/lib/ssl/test/ssl_to_openssl_SUITE.erl
+++ b/lib/ssl/test/ssl_to_openssl_SUITE.erl
@@ -91,6 +91,7 @@ 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 +260,9 @@ 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);
@@ -760,8 +762,8 @@ 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 +772,14 @@ 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 +804,53 @@ 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 +861,7 @@ 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 +870,14 @@ 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 +906,7 @@ 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 +1249,7 @@ 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, bad_record_mac),
     process_flag(trap_exit, false).
 
 %%--------------------------------------------------------------------
@@ -1602,8 +1655,8 @@ 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 +1664,7 @@ 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 +1674,12 @@ 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 +1704,8 @@ 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 +1713,14 @@ 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 +1838,8 @@ 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 +1847,7 @@ 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 +1855,7 @@ 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 +1946,11 @@ 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
@@ -1924,6 +1989,12 @@ 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"),
diff --git a/lib/ssl/vsn.mk b/lib/ssl/vsn.mk
index 75d959accf..3527062a8a 100644
--- a/lib/ssl/vsn.mk
+++ b/lib/ssl/vsn.mk
@@ -1 +1 @@
-SSL_VSN = 9.1
+SSL_VSN = 9.1.2
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..8bb4cf9101 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 +470,7 @@ CryptoKeyFun(clear) -> term()</code>
     </func>
 
     <func>
-      <name name="strip_files" arity="1"/>
+      <name name="strip_files" arity="1" since=""/>
       <fsummary>Removes chunks not needed by the loader from BEAM files.
       </fsummary>
       <desc>
@@ -483,7 +483,7 @@ CryptoKeyFun(clear) -> term()</code>
     </func>
 
     <func>
-      <name name="strip_release" arity="1"/>
+      <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 +497,7 @@ CryptoKeyFun(clear) -> term()</code>
     </func>
 
     <func>
-      <name name="version" arity="1"/>
+      <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..8e4e002000 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
@@ -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..13b0aaad9e 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>
@@ -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 611b176613..ff088de8ab 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>
@@ -618,7 +691,7 @@ Error: fun containing local Erlang function calls
     </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
@@ -648,7 +721,7 @@ 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
@@ -680,7 +753,7 @@ 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>
@@ -699,7 +772,7 @@ 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>
@@ -731,7 +804,7 @@ 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>
@@ -746,7 +819,7 @@ 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>
@@ -786,7 +859,7 @@ 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>
@@ -809,7 +882,7 @@ 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
@@ -823,7 +896,7 @@ 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>
@@ -855,7 +928,7 @@ 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>
@@ -870,11 +943,14 @@ 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>
@@ -885,7 +961,7 @@ 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
@@ -900,7 +976,7 @@ 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>
@@ -919,7 +995,7 @@ 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>
@@ -935,11 +1011,15 @@ 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>
@@ -967,7 +1047,7 @@ 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>
@@ -1004,7 +1084,7 @@ 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>,
@@ -1015,7 +1095,7 @@ 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
@@ -1185,7 +1265,7 @@ 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
@@ -1197,17 +1277,18 @@ 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>
@@ -1217,13 +1298,13 @@ 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
@@ -1233,7 +1314,7 @@ 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>
@@ -1288,11 +1369,20 @@ 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
@@ -1305,11 +1395,11 @@ 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) ->
@@ -1327,7 +1417,7 @@ 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
@@ -1337,14 +1427,14 @@ 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
@@ -1358,7 +1448,7 @@ 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>
@@ -1453,7 +1543,7 @@ 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>
@@ -1467,12 +1557,15 @@ 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>
@@ -1491,7 +1584,7 @@ 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>
@@ -1515,7 +1608,7 @@ 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
@@ -1524,7 +1617,7 @@ 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>
@@ -1554,7 +1647,7 @@ 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">
@@ -1587,7 +1680,7 @@ 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>
@@ -1599,7 +1692,7 @@ 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>
@@ -1617,7 +1710,7 @@ 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
@@ -1628,7 +1721,7 @@ 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>
@@ -1653,7 +1746,7 @@ 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
@@ -1664,7 +1757,7 @@ 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
@@ -1711,7 +1804,7 @@ 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>
@@ -1719,7 +1812,7 @@ 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
@@ -1797,8 +1890,8 @@ 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
@@ -1874,7 +1967,7 @@ 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>
@@ -1889,7 +1982,7 @@ 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>
@@ -1916,7 +2009,7 @@ 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>
@@ -1927,12 +2020,12 @@ 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"/>
@@ -2011,8 +2104,8 @@ 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"/>
@@ -2054,7 +2147,7 @@ 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..ae42846c6b 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
@@ -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 dfecd235c9..d678d0436b 100644
--- a/lib/stdlib/doc/src/gen_statem.xml
+++ b/lib/stdlib/doc/src/gen_statem.xml
@@ -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>
@@ -1416,8 +1416,8 @@ 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>
@@ -1493,7 +1493,7 @@ 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>
@@ -1513,7 +1513,7 @@ 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>
@@ -1527,7 +1527,7 @@ 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>
@@ -1551,7 +1551,7 @@ 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>
@@ -1608,8 +1608,8 @@ 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>
@@ -1641,8 +1641,8 @@ 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>
@@ -1662,8 +1662,8 @@ 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>
@@ -1770,7 +1770,7 @@ 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>
@@ -1781,7 +1781,7 @@ 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>
@@ -1827,7 +1827,7 @@ 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>
@@ -1878,7 +1878,7 @@ 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>
@@ -1967,7 +1967,7 @@ 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>
@@ -2009,7 +2009,7 @@ 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
@@ -2108,16 +2108,16 @@ 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>
@@ -2236,7 +2236,7 @@ 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 4c5199ca2b..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>
@@ -54,7 +54,7 @@
 
   <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
@@ -73,7 +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>
@@ -92,7 +92,7 @@
     </func>
 
     <func>
-      <name name="fold" arity="3"/>
+      <name name="fold" arity="3" since="OTP 17.0"/>
       <fsummary></fsummary>
       <desc>
         <p>Calls <c>F(Key, Value, AccIn)</c> for every <c><anno>Key</anno></c>
@@ -116,7 +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
@@ -133,7 +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
@@ -152,7 +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
@@ -173,7 +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
@@ -193,7 +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
@@ -207,19 +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
@@ -235,7 +235,7 @@ 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
@@ -259,7 +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
@@ -277,7 +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>
@@ -289,7 +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
@@ -304,21 +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
@@ -342,7 +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
@@ -362,7 +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
@@ -376,7 +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
@@ -401,7 +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
@@ -418,7 +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
@@ -438,7 +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
@@ -457,7 +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
@@ -477,7 +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
@@ -493,7 +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>
@@ -510,7 +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 64b97fad7f..dee7136eb1 100644
--- a/lib/stdlib/doc/src/notes.xml
+++ b/lib/stdlib/doc/src/notes.xml
@@ -31,6 +31,100 @@
   </header>
   <p>This document describes the changes made to the STDLIB application.</p>
 
+<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>
+      <list>
+        <item>
+          <p>
+	    Document <c>bit_size</c> in match specifications and
+	    allow it in <c>ets:fun2ms</c>.</p>
+          <p>
+	    Own Id: OTP-15343 Aux Id: PR-1962 </p>
+        </item>
+        <item>
+	    <p>The <c>beam()</c> type in <c>beam_lib</c> is defined
+	    as <c>module() | file:filename() | binary()</c>. The
+	    <c>module()</c> is misleading. Giving the module name as
+	    an atom will only work if the BEAM file is in a current
+	    directory.</p>
+	    <p>To avoid confusion, <c>module()</c> has been removed
+	    from the type. That means that there will be a Dialyzer
+	    warning for code that call <c>beam_lib</c> with an atom
+	    as filename, but the calls will still work.</p>
+          <p>
+	    Own Id: OTP-15378 Aux Id: ERL-696 </p>
+        </item>
+        <item>
+          <p>
+	    <c>unicode_util</c> crashed on certain emoji grapheme
+	    clusters in binary strings.</p>
+          <p>
+	    Own Id: OTP-15428 Aux Id: ERL-777 </p>
+        </item>
+        <item>
+	    <p>When an external fun was used, warnings for unused
+	    variables could be suppressed.</p>
+          <p>
+	    Own Id: OTP-15437 Aux Id: ERL-762 </p>
+        </item>
+        <item>
+          <p>
+	    Fix reduction count in lists:member/2</p>
+          <p>
+	    Own Id: OTP-15474 Aux Id: ERIERL-229 </p>
+        </item>
+      </list>
+    </section>
+
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+	    <p>When specified, the <c>+{source,Name}</c> option will
+	    now override the actual file name in stack traces,
+	    instead of only affecting the return value of
+	    <c>Mod:module_info()</c>.</p>
+	    <p>The <c>+deterministic</c> flag will also affect stack
+	    traces now, omitting all path information except the file
+	    name, fixing a long-standing issue where deterministic
+	    builds required deterministic paths.</p>
+          <p>
+	    Own Id: OTP-15245 Aux Id: ERL-706 </p>
+        </item>
+        <item>
+	    <p>List subtraction (The <c>--</c> operator) will now
+	    yield properly on large inputs.</p>
+          <p>
+	    Own Id: OTP-15371</p>
+        </item>
+        <item>
+          <p>
+	    <c>calendar:system_time_to_rfc3339/1,2</c> no longer
+	    remove trailing zeros from fractions.</p>
+          <p>
+	    Own Id: OTP-15464</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>STDLIB 3.6</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
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..aeb9f48735 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>
@@ -162,7 +162,7 @@
     </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
@@ -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 8e657698c6..b4737b48f8 100644
--- a/lib/stdlib/doc/src/rand.xml
+++ b/lib/stdlib/doc/src/rand.xml
@@ -32,7 +32,7 @@
     <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>
@@ -349,7 +349,7 @@ tests. We suggest to use a sign test to extract a random Boolean value.</pre>
 
   <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.
@@ -358,7 +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.
@@ -367,7 +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" />
@@ -382,7 +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
@@ -394,7 +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
@@ -404,7 +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
@@ -413,7 +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
@@ -423,7 +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)
@@ -432,7 +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"/>
@@ -448,7 +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
@@ -457,7 +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>
@@ -472,7 +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
@@ -481,7 +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>
@@ -517,7 +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>
@@ -553,7 +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>,
@@ -564,7 +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>
@@ -600,7 +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>
@@ -662,7 +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..80fb28b548 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>
@@ -68,7 +68,7 @@
 
   <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 +84,7 @@
     </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 +102,7 @@ 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 +113,9 @@ 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
@@ -178,9 +178,9 @@ 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 +193,7 @@ 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..c5075f31c5 100644
--- a/lib/stdlib/doc/src/sys.xml
+++ b/lib/stdlib/doc/src/sys.xml
@@ -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"/>
@@ -129,8 +277,8 @@
 
   <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 +291,8 @@
     </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 +375,8 @@
     </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 +413,8 @@
     </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 +431,8 @@
     </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 +450,8 @@
     </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 +463,8 @@
     </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 +475,8 @@
     </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 +486,8 @@
     </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 +599,8 @@
     </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 +608,8 @@
     </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 +619,8 @@
     </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 +630,8 @@
     </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 +642,8 @@
     </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 +666,7 @@
 
   <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 +677,15 @@
     </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 +695,7 @@
     </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 +710,7 @@
     </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 +748,7 @@
     </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 +759,19 @@
     </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 +794,7 @@
     </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 +810,7 @@
     </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 +827,7 @@
     </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 +847,7 @@
     </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/src/calendar.erl b/lib/stdlib/src/calendar.erl
index bb5d450cd6..3a083d9fda 100644
--- a/lib/stdlib/src/calendar.erl
+++ b/lib/stdlib/src/calendar.erl
@@ -529,24 +529,41 @@ 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.
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_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/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 24b268cd38..513118a874 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.
@@ -374,50 +374,51 @@ 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
@@ -586,7 +587,12 @@ 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
@@ -658,36 +664,29 @@ 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
@@ -695,34 +694,46 @@ 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}),
@@ -732,31 +743,34 @@ 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)
@@ -766,44 +780,54 @@ 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.
@@ -812,34 +836,46 @@ 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.
@@ -847,964 +883,1169 @@ 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 = 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(), 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 = 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(), 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,
-%%  #state{postponed = will_not_happen = P} = S,
-  Events, Event, NextState, NewData,
-  #trans_opts{
-     postpone = Postpone, hibernate = Hibernate,
-     timeouts_r = [], next_events_r = NextEventsR}) ->
-    %%
-    %% Optimize the simple cases i.e no debug and no timer changes,
-    %% by duplicate stripped down code
-    %%
-    %% Fast path
-    %%
-    case Postpone of
-        true ->
-            loop_event_done_fast(
-              Parent, Hibernate, S,
-              Events, [Event|P], NextState, NewData, NextEventsR);
-        false ->
-            loop_event_done_fast(
-              Parent, Hibernate, S,
-              Events, P, NextState, NewData, NextEventsR)
-    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]
+                Postponed
 	end,
-    {Events_2,P_2,
-     Timers_2} =
-        %% Cancel the event timeout
-        if
-            NextState =:= State ->
-                {Events_0,P_1,
-                 cancel_timer_by_type(
-                   timeout, {TimerTypes_0,CancelTimers_0})};
-            true ->
-                %% Move all postponed events to queue
-                %% and cancel the state timeout
-                {lists:reverse(P_1, Events_0),[],
-                 cancel_timer_by_type(
-                   state_timeout,
-                   cancel_timer_by_type(
-                     timeout, {TimerTypes_0,CancelTimers_0}))}
-        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)).
-
-loop_event_done(Parent, Debug, S, Q) ->
-%%    io:format(
-%%      "loop_event_done:~n"
-%%      "    state = ~p, data = ~p, postponed = ~p~n "
-%%      "    timer_refs = ~p, timer_types = ~p, cancel_timers = ~p.~n"
-%%      "    Q = ~p.~n",
-%%      [S#state.state,S#state.data,S#state.postponed,
-%%       S#state.timer_refs,S#state.timer_types,S#state.cancel_timers,
-%%       Q]),
-    case Q 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)
+    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) ->
+    %%
+    %% Cancel event timeout
+    %%
+    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.
 
-%% Fast path
-%%
-%% Cancel event timer and state timer only if running
-loop_event_done_fast(
-  Parent, Hibernate,
-  #state{
-     state = NextState,
-     timer_types = TimerTypes,
-     cancel_timers = CancelTimers} = S,
-  Events, P, NextState, NewData, NextEventsR) ->
-    %% Same state
-    case TimerTypes of
-        #{timeout := _} ->
-            %% Event timeout active
-            loop_event_done_fast_2(
-              Parent, Hibernate, S,
-              Events, P, NextState, NewData, NextEventsR,
-              cancel_timer_by_type(
-                timeout, {TimerTypes,CancelTimers}));
-        _ ->
-            %% No event timeout active
-            loop_event_done_fast_2(
-              Parent, Hibernate, S,
-              Events, P, NextState, NewData, NextEventsR,
-              {TimerTypes,CancelTimers})
-    end;
-loop_event_done_fast(
-  Parent, Hibernate,
-  #state{
-     timer_types = TimerTypes,
-     cancel_timers = CancelTimers} = S,
-  Events, P, NextState, NewData, NextEventsR) ->
-    %% State change
-    case TimerTypes of
-        #{timeout := _} ->
-            %% Event timeout active
-            %% - cancel state_timeout too since it is faster than inspecting
-            loop_event_done_fast(
-              Parent, Hibernate, S,
-              Events, P, NextState, NewData, NextEventsR,
-              cancel_timer_by_type(
-                state_timeout,
-                cancel_timer_by_type(
-                  timeout, {TimerTypes,CancelTimers})));
-        #{state_timeout := _} ->
-            %% State_timeout active but not event timeout
-            loop_event_done_fast(
-              Parent, Hibernate, S,
-              Events, P, NextState, NewData, NextEventsR,
-              cancel_timer_by_type(
-                state_timeout, {TimerTypes,CancelTimers}));
+%% State transition to a different state
+%%
+loop_state_change(
+  P, Debug, S, Events, NextState_NewData,
+  NextEventsR, Hibernate, TimeoutsR, Postponed) ->
+    %%
+    %% Retry postponed events
+    %%
+    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);
         _ ->
-            %% No event nor state_timeout active
-            loop_event_done_fast(
-              Parent, Hibernate, S,
-              Events, P, NextState, NewData, NextEventsR,
-              {TimerTypes,CancelTimers})
+            loop_state_change(
+              P, Debug, S,
+              lists:reverse(Postponed, Events), NextState_NewData,
+              NextEventsR, Hibernate, TimeoutsR)
     end.
 %%
-%% Retry postponed events
-loop_event_done_fast(
-  Parent, Hibernate, S,
-  Events, P, NextState, NewData, NextEventsR, TimerTypes_CancelTimers) ->
-    case P of
-        %% Handle 0..2 postponed events without list reversal since
-        %% that will move out all live registers and back again
-        [] ->
-            loop_event_done_fast_2(
-              Parent, Hibernate, S,
-              Events, [], NextState, NewData, NextEventsR,
-              TimerTypes_CancelTimers);
-        [E] ->
-            loop_event_done_fast_2(
-              Parent, Hibernate, S,
-              [E|Events], [], NextState, NewData, NextEventsR,
-              TimerTypes_CancelTimers);
-        [E1,E2] ->
-            loop_event_done_fast_2(
-              Parent, Hibernate, S,
-              [E2,E1|Events], [], NextState, NewData, NextEventsR,
-              TimerTypes_CancelTimers);
+loop_state_change(
+  P, Debug, #state{timers = {TimerRefs,TimeoutTypes} = Timers} = S,
+  Events, NextState_NewData,
+  NextEventsR, Hibernate, TimeoutsR) ->
+    %%
+    %% Cancel state and event timeout
+    %%
+    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));
         _ ->
-            %% A bit slower path
-            loop_event_done_fast_2(
-              Parent, Hibernate, S,
-              lists:reverse(P, Events), [], NextState, NewData, NextEventsR,
-              TimerTypes_CancelTimers)
+            %% 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
 %%
-%% Fast path
+loop_next_events(
+  P, Debug, S,
+  Events, NextState_NewData,
+  NextEventsR, Hibernate, [], Postponed,
+  Timers) ->
+    %%
+    %% 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_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) ->
+    %%
+    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_event_done_fast_2(
-  Parent, Hibernate, S,
-  Events, P, NextState, NewData, NextEventsR,
-  {TimerTypes,CancelTimers}) ->
+loop_timeouts(
+  P, Debug, S,
+  Events, NextState_NewData,
+  NextEventsR, Hibernate, [], Postponed,
+  Timers, _Seen, TimeoutEvents) ->
     %%
-    NewS =
+    S_1 =
         S#state{
-          state = NextState,
-          data = NewData,
-          postponed = P,
-          timer_types = TimerTypes,
-          cancel_timers = CancelTimers,
+          state_data = NextState_NewData,
+          postponed = Postponed,
+          timers = Timers,
           hibernate = Hibernate},
-    case NextEventsR of
-        %% Handle 0..2 next events without list reversal since
-        %% that will move out all live registers and back again
+    case TimeoutEvents of
         [] ->
-            loop_event_done(Parent, ?not_sys_debug, NewS, Events);
-        [E] ->
-            loop_event_done(Parent, ?not_sys_debug, NewS, [E|Events]);
-        [E2,E1] ->
-            loop_event_done(Parent, ?not_sys_debug, NewS, [E1,E2|Events]);
+            loop_done(P, Debug, S_1, NextEventsR, Events);
         _ ->
-            %% A bit slower path
-            loop_event_done(
-              Parent, ?not_sys_debug, NewS, lists:reverse(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)
@@ -1814,62 +2055,94 @@ 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
@@ -1877,8 +2150,7 @@ 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 ->
@@ -1887,14 +2159,13 @@ 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
 	[] ->
@@ -1903,38 +2174,67 @@ 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]
@@ -1954,14 +2254,12 @@ 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 ->
@@ -1981,39 +2279,60 @@ 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])
@@ -2021,21 +2340,21 @@ 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]}).
@@ -2044,24 +2363,41 @@ 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..5483ea87b5 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}.
@@ -738,7 +738,7 @@ printable_list(L, _D, T, _Uni) when T < 0->
     io_lib:printable_list(L).
 
 slice(L, N) ->
-    try string:length(L) =< N of
+    try io_lib:chars_length(L) =< N of
         true ->
             all;
         false ->
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 2cfc702b53..f2b50c354a 100644
--- a/lib/stdlib/src/otp_internal.erl
+++ b/lib/stdlib/src/otp_internal.erl
@@ -55,6 +55,14 @@ 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) ->
diff --git a/lib/stdlib/src/stdlib.appup.src b/lib/stdlib/src/stdlib.appup.src
index 8c0b186288..9e5d6a3bd8 100644
--- a/lib/stdlib/src/stdlib.appup.src
+++ b/lib/stdlib/src/stdlib.appup.src
@@ -16,13 +16,42 @@
 %% limitations under the License.
 %%
 %% %CopyrightEnd%
+%%
+%% We allow upgrade from, and downgrade to all previous
+%% versions from the following OTP releases:
+%% - OTP 20
+%% - OTP 21
+%%
+%% We also allow upgrade from, and downgrade to all
+%% versions that have branched off from the above
+%% stated previous versions.
+%%
 {"%VSN%",
- %% Up from - max one major revision back
- [{<<"3\\.4(\\.[0-9]+)*">>,[restart_new_emulator]}, % OTP-20.*
-  {<<"3\\.5(\\.[0-9]+)*">>,[restart_new_emulator]}, % OTP-21.0
-  {<<"3\\.6(\\.[0-9]+)*">>,[restart_new_emulator]}],% OTP-21.1
- %% Down to - max one major revision back
- [{<<"3\\.4(\\.[0-9]+)*">>,[restart_new_emulator]},  % OTP-20.*
-  {<<"3\\.5(\\.[0-9]+)*">>,[restart_new_emulator]},  % OTP-21.0
-  {<<"3\\.6(\\.[0-9]+)*">>,[restart_new_emulator]}]  % OTP-21.1
-}.
+ [{<<"^3\\.4$">>,[restart_new_emulator]},
+  {<<"^3\\.4\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]},
+  {<<"^3\\.4\\.1(?:\\.[0-9]+)*$">>,[restart_new_emulator]},
+  {<<"^3\\.4\\.2(?:\\.[0-9]+)*$">>,[restart_new_emulator]},
+  {<<"^3\\.4\\.3(?:\\.[0-9]+)*$">>,[restart_new_emulator]},
+  {<<"^3\\.4\\.4(?:\\.[0-9]+)*$">>,[restart_new_emulator]},
+  {<<"^3\\.4\\.5(?:\\.[0-9]+)*$">>,[restart_new_emulator]},
+  {<<"^3\\.5$">>,[restart_new_emulator]},
+  {<<"^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\\.7$">>,[restart_new_emulator]},
+  {<<"^3\\.7\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]}],
+ [{<<"^3\\.4$">>,[restart_new_emulator]},
+  {<<"^3\\.4\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]},
+  {<<"^3\\.4\\.1(?:\\.[0-9]+)*$">>,[restart_new_emulator]},
+  {<<"^3\\.4\\.2(?:\\.[0-9]+)*$">>,[restart_new_emulator]},
+  {<<"^3\\.4\\.3(?:\\.[0-9]+)*$">>,[restart_new_emulator]},
+  {<<"^3\\.4\\.4(?:\\.[0-9]+)*$">>,[restart_new_emulator]},
+  {<<"^3\\.4\\.5(?:\\.[0-9]+)*$">>,[restart_new_emulator]},
+  {<<"^3\\.5$">>,[restart_new_emulator]},
+  {<<"^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\\.7$">>,[restart_new_emulator]},
+  {<<"^3\\.7\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]}]}.
diff --git a/lib/stdlib/src/sys.erl b/lib/stdlib/src/sys.erl
index 0064414d6f..a04195c9ed 100644
--- a/lib/stdlib/src/sys.erl
+++ b/lib/stdlib/src/sys.erl
@@ -30,7 +30,8 @@
 	 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
@@ -42,10 +43,17 @@
                       | {'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(),
@@ -385,31 +393,41 @@ 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);
-        {'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)]
+    catch
+        done -> handle_debug(T, FormFunc, State, Event);
+        NFuncState ->
+            [{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 +544,19 @@ 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 +613,6 @@ 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 +640,14 @@ 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 +659,74 @@ 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
@@ -665,9 +753,9 @@ 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/test/binary_module_SUITE.erl b/lib/stdlib/test/binary_module_SUITE.erl
index c5cfea5e9e..e0811f19cf 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)))).
@@ -1361,3 +1362,13 @@ 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..c6d9dbca4a 100644
--- a/lib/stdlib/test/calendar_SUITE.erl
+++ b/lib/stdlib/test/calendar_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, 
 	 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/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 e6ed55bf2d..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,
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/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 017939fdd6..16cf8f43f9 100644
--- a/lib/stdlib/test/gen_statem_SUITE.erl
+++ b/lib/stdlib/test/gen_statem_SUITE.erl
@@ -513,7 +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},_},_} =
@@ -531,7 +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},_},_} =
@@ -549,7 +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},
@@ -689,7 +695,10 @@ state_enter(_Config) ->
 	      end},
     {ok,STM} =
 	gen_statem:start_link(
-	  ?MODULE, {map_statem,Machine,[state_enter]}, [{debug,[trace]}]),
+	  ?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),
@@ -708,6 +717,11 @@ state_enter(_Config) ->
      {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(),
 
@@ -1470,7 +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
@@ -1482,7 +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
@@ -1591,6 +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());
@@ -1602,15 +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) ->
@@ -1642,7 +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/stdlib_bench_SUITE.erl b/lib/stdlib/test/stdlib_bench_SUITE.erl
index 436aa78a0f..3456442088 100644
--- a/lib/stdlib/test/stdlib_bench_SUITE.erl
+++ b/lib/stdlib/test/stdlib_bench_SUITE.erl
@@ -67,9 +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),
@@ -294,12 +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)).
 
@@ -371,9 +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 ->
@@ -488,27 +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()};
@@ -536,10 +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/vsn.mk b/lib/stdlib/vsn.mk
index caf5ecdbb4..d46173497b 100644
--- a/lib/stdlib/vsn.mk
+++ b/lib/stdlib/vsn.mk
@@ -1 +1 @@
-STDLIB_VSN = 3.6
+STDLIB_VSN = 3.7.1
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/test/syntax_tools_SUITE.erl b/lib/syntax_tools/test/syntax_tools_SUITE.erl
index 9dbd0e302a..6b42f7a0a1 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() -> 
     [].
@@ -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),
@@ -359,6 +368,27 @@ test_comment_scan([File|Files],DataDir) ->
     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,iolist_to_binary(PP)),
+    io:format("Parsing OutFile: ~s~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]),
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/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/doc/src/cover.xml b/lib/tools/doc/src/cover.xml
index 6c6b20aad8..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>
@@ -241,8 +253,8 @@
       </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>
@@ -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>
@@ -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 79bacb2927..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>
@@ -173,7 +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
@@ -182,7 +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 f10953774f..a6781dfdb3 100644
--- a/lib/tools/doc/src/notes.xml
+++ b/lib/tools/doc/src/notes.xml
@@ -31,6 +31,21 @@
   </header>
   <p>This document describes the changes made to the Tools application.</p>
 
+<section><title>Tools 3.0.2</title>
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+          <p>
+	    Remove emacs warnings and added more tests.</p>
+          <p>
+	    Own Id: OTP-15476</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Tools 3.0.1</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/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/vsn.mk b/lib/tools/vsn.mk
index 1bebb1c421..bb8305e9f1 100644
--- a/lib/tools/vsn.mk
+++ b/lib/tools/vsn.mk
@@ -1 +1 @@
-TOOLS_VSN = 3.0.1
+TOOLS_VSN = 3.0.2
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_helpers.cpp b/lib/wx/c_src/wxe_helpers.cpp
index d1f607d2af..47955494f9 100644
--- a/lib/wx/c_src/wxe_helpers.cpp
+++ b/lib/wx/c_src/wxe_helpers.cpp
@@ -101,7 +101,7 @@ wxeCommand * wxeFifo::Peek(unsigned int *i)
 }
 
 
-void wxeFifo::Add(int fc, char * cbuf,int buflen, wxe_data *sd)
+int wxeFifo::Add(int fc, char * cbuf,int buflen, wxe_data *sd)
 {
   unsigned int pos;
   wxeCommand *curr;
@@ -144,6 +144,7 @@ void wxeFifo::Add(int fc, char * cbuf,int buflen, wxe_data *sd)
   } else {   // No-op only PING currently
     curr->buffer = NULL;
   }
+  return m_n;
 }
 
 void wxeFifo::Append(wxeCommand *orig)
diff --git a/lib/wx/c_src/wxe_helpers.h b/lib/wx/c_src/wxe_helpers.h
index 70ffccdc13..a6c00e5aca 100644
--- a/lib/wx/c_src/wxe_helpers.h
+++ b/lib/wx/c_src/wxe_helpers.h
@@ -63,7 +63,7 @@ class wxeFifo {
     wxeFifo(unsigned int size);
     virtual ~wxeFifo();
 
-    void Add(int fc, char * cbuf,int buflen, wxe_data *);
+    int Add(int fc, char * cbuf,int buflen, wxe_data *);
     void Append(wxeCommand *Other);
 
     wxeCommand * Get();
diff --git a/lib/wx/c_src/wxe_impl.cpp b/lib/wx/c_src/wxe_impl.cpp
index f856099ffa..43b5476073 100644
--- a/lib/wx/c_src/wxe_impl.cpp
+++ b/lib/wx/c_src/wxe_impl.cpp
@@ -70,7 +70,7 @@ void push_command(int op,char * buf,int len, wxe_data *sd)
   /* fprintf(stderr, "Op %d %d [%ld] %d\r\n", op, (int) driver_caller(sd->port_handle),
      wxe_batch->size(), wxe_batch_caller),fflush(stderr); */
   erl_drv_mutex_lock(wxe_batch_locker_m);
-  wxe_queue->Add(op, buf, len, sd);
+  int n = wxe_queue->Add(op, buf, len, sd);
 
   if(wxe_needs_signal) {
     // wx-thread is waiting on batch end in cond_wait
@@ -79,7 +79,7 @@ void push_command(int op,char * buf,int len, wxe_data *sd)
   } else {
     // wx-thread is waiting gui-events
     erl_drv_mutex_unlock(wxe_batch_locker_m);
-    wxWakeUpIdle();
+    if(n < 2) wxWakeUpIdle();
   }
 }
 
@@ -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/src/notes.xml b/lib/wx/doc/src/notes.xml
index a925cf30d4..1061e73138 100644
--- a/lib/wx/doc/src/notes.xml
+++ b/lib/wx/doc/src/notes.xml
@@ -32,6 +32,22 @@
   <p>This document describes the changes made to the wxErlang
     application.</p>
 
+<section><title>Wx 1.8.6</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Fixed delayed delete bug which caused wx applications to
+	    crash on Mojave.</p>
+          <p>
+	    Own Id: OTP-15426 Aux Id: ERL-755 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Wx 1.8.5</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
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/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/vsn.mk b/lib/wx/vsn.mk
index e539ad36f6..d241a7a1b4 100644
--- a/lib/wx/vsn.mk
+++ b/lib/wx/vsn.mk
@@ -1 +1 @@
-WX_VSN = 1.8.5
+WX_VSN = 1.8.6
diff --git a/lib/xmerl/doc/src/notes.xml b/lib/xmerl/doc/src/notes.xml
index a97036127e..7f6874e36b 100644
--- a/lib/xmerl/doc/src/notes.xml
+++ b/lib/xmerl/doc/src/notes.xml
@@ -32,6 +32,21 @@
   <p>This document describes the changes made to the Xmerl application.</p>
 
 
+<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 +77,21 @@
 
 </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 +1442,3 @@
     </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/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..b6486681c2 100644
--- a/lib/xmerl/vsn.mk
+++ b/lib/xmerl/vsn.mk
@@ -1 +1 @@
-XMERL_VSN = 1.3.18
+XMERL_VSN = 1.3.19