menu-bar-mode

menu-bar-mode is an interactive compiled Lisp function in `menu-bar.el'.


(menu-bar-mode &optional ARG)

Toggle display of a menu bar on each frame (Menu Bar mode).
With a prefix argument ARG, enable Menu Bar mode if ARG is
positive, and disable it otherwise. If called from Lisp, enable
Menu Bar mode if ARG is omitted or nil.

This command applies to all frames that exist and frames to be
created in the future.