DEFUN ("message-or-box", Fmessage_or_box, Smessage_or_box, 1, MANY, 0,
"Display a message in a dialog box or in the echo area.\n\
-If this command was invoked with the mouse, use a dialog box.\n\
+If this command was invoked with the mouse, use a dialog box if\n\
+`use-dialog-box' is non-nil.\n\
Otherwise, use the echo area.\n\
The first argument is a format control string, and the rest are data\n\
to be formatted under control of the string. See `format' for details.\n\