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15.5.679 wait_for_menu

wait_for_menu [, erase_prev]

[x11] Waits for a user menu selection. If erase_prev is set and unequal to zero, then pending menu selections are discarded before waiting for a new user selection. Otherwise, the oldest pending selection is returned. The results are stored in !last_menu (menu number), !menu_item (item number in menu, starting at zero), !xmenu, !ymenu (position of mouse relative to menu’s upper left hand corner; in units of one character or one line, respectively)

See also: menu, checkmenu, !last_menu, !menu_item, !xmenu, !ymenu