- "Toggle use of the tool bar.
-With a numeric argument, if the argument is positive, turn on the
-tool bar; otherwise, turn off the tool bar.
+ "Toggle the tool bar in all graphical frames (Tool Bar mode).
+With a prefix argument ARG, enable Tool Bar mode if ARG is
+positive, and disable it otherwise. If called from Lisp, enable
+Tool Bar mode if ARG is omitted or nil.