'm O' is a prime candidate for using ':' to select a menu item since
you can use that to avoid scrolling through many pages, but typing ':'
would immediately overwrite two or three lines of the menu with a
status refresh. curses doesn't suffer from this problem. X11 and Qt
show menus in separate windows do don't either. Not sure about WinGUI.
I think that this may have been reported in the past, but if so I don't
recall by whom, or why it wasn't addressed.