- "Toggle gpm-mouse mode to use the mouse in GNU/Linux consoles.
-With prefix arg, turn gpm-mouse mode on if arg is positive,
-otherwise turn it off.
+ "Toggle mouse support in GNU/Linux consoles (GPM Mouse mode).
+With a prefix argument ARG, enable GPM Mouse mode if ARG is
+positive, and disable it otherwise. If called from Lisp, enable
+the mode if ARG is omitted or nil.