menu-bar-open

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

It is bound to <f10>.

(menu-bar-open &optional FRAME)

Start key navigation of the menu bar in FRAME.

This function decides which method to use to access the menu
depending on FRAME's terminal device. On X displays, it calls
`x-menu-bar-open'; on Windows, `w32-menu-bar-open'; otherwise it
calls either `popup-menu' or `tmm-menubar' depending on whether
`tty-menu-open-use-tmm' is nil or not.

If FRAME is nil or not given, use the selected frame.