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-rw-r--r--lib/stdlib/doc/src/sys.xml12
1 files changed, 7 insertions, 5 deletions
diff --git a/lib/stdlib/doc/src/sys.xml b/lib/stdlib/doc/src/sys.xml
index 64d8789016..9fe816e33a 100644
--- a/lib/stdlib/doc/src/sys.xml
+++ b/lib/stdlib/doc/src/sys.xml
@@ -4,7 +4,7 @@
<erlref>
<header>
<copyright>
- <year>1996</year><year>2017</year>
+ <year>1996</year><year>2018</year>
<holder>Ericsson AB. All Rights Reserved.</holder>
</copyright>
<legalnotice>
@@ -102,7 +102,7 @@
then treated in the debug function. For example, <c>trace</c>
formats the system events to the terminal.
</p>
- <p>Three predefined system events are used when a
+ <p>Four predefined system events are used when a
process receives or sends a message. The process can also define its
own system events. It is always up to the process itself
to format these events.</p>
@@ -276,7 +276,9 @@
<p><c><anno>Func</anno></c> is called whenever a system event is
generated. This function is to return <c>done</c>, or a new
<c>Func</c> state. In the first case, the function is removed. It is
- also removed if the function fails.</p>
+ also removed if the function fails. If one debug function should be
+ installed more times, a unique <c><anno>FuncId</anno></c> must be
+ specified for each installation.</p>
</desc>
</func>
@@ -330,8 +332,8 @@
<fsummary>Remove a debug function from the process.</fsummary>
<desc>
<p>Removes an installed debug function from the
- process. <c><anno>Func</anno></c> must be the same as previously
- installed.</p>
+ process. <c><anno>Func</anno></c> or <c><anno>FuncId</anno></c> must be
+ the same as previously installed.</p>
</desc>
</func>