diff --git a/doc/sphinx/lfun/catch_msg.rst b/doc/sphinx/lfun/catch_msg.rst
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+catch_msg()
+===========
+
+SYNOPSIS
+--------
+::
+
+    void catch_msg(mixed *arr, object obj)
+
+DESCRIPTION
+-----------
+::
+
+    When say(), tell_object()  or tell_room() are used with an array 
+    as message, the array will be passed to catch_message() in all living
+    objects that can hear it, instead of writing to the user resp.
+    sending to catch_tell(). This can be used to implement
+    communication protocols between livings. The second denotes
+    the object that has sent the message.
+
+SEE ALSO
+--------
+::
+
+ say(E), tell_room(E), tell_object(E), catch_tell(L)
+