diff --git a/src/LyXAction.cpp b/src/LyXAction.cpp
index 02df0087f4..0c6f70fd42 100644
--- a/src/LyXAction.cpp
+++ b/src/LyXAction.cpp
@@ -906,17 +906,16 @@ void LyXAction::init()
  * \var lyx::kb_action lyx::LFUN_CALL
  * \li Action: Executes a command defined in a .def file.
  * \li Notion: The definitions are by default read from lib/commands/default.def .
-               A .def file allows to define a command with \\define "Name" "lfun"
-               where Name is the name of the new command and lfun is the lfun code
+               A .def file allows to define a command with \\define "<NAME>" "<LFUN>"
+               where <NAME> is the name of the new command and <LFUN> is the lfun code
                to be executed (see e.g. command-sequence LFUN).
                \\def_file "FileName" allows to include another .def file.
                This is particularly useful in connection with toolbar buttons:
-               Since the name of the button is derived from <CMDNAME>, a button
-               cannot otherwise be assigned to a complex command-sequence.
- * \li Syntax: call <CMDNAME>
- * \li Params: <CMDNAME>: Name of the command that must be called.
-                          <CMDNAME> can be consequently used in menu,
-                          toolbar (image) or bind file
+               Since the name of the button image for this lfun is 
+               lib/images/commands/<NAME>.png this is the way to assign an image
+               to a complex command-sequence.
+ * \li Syntax: call <NAME>
+ * \li Params: <NAME>: Name of the command that must be called.
  * \li Origin: broider, 2 Oct 2007
  */
 		{ LFUN_CALL, "call", NoBuffer, System },