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-rw-r--r--erts/doc/src/erlang.xml1
1 files changed, 1 insertions, 0 deletions
diff --git a/erts/doc/src/erlang.xml b/erts/doc/src/erlang.xml
index 0e82ceba7d..2183f75487 100644
--- a/erts/doc/src/erlang.xml
+++ b/erts/doc/src/erlang.xml
@@ -2553,6 +2553,7 @@ os_prompt%</pre>
true
> is_map_key(value,Map).
false</code>
+ <p>Allowed in guard tests.</p>
</desc>
</func>