These don't need to fit text at all, instant icon recognition is a thing on repeated use. Keyboard navigation is a chain of single key presses, which can be ei

These don't need to fit text at all, instant icon recognition is a thing on repeated use. Keyboard navigation is a chain of single key presses, which can be either word-mnemonic labels or position-mnemonics like uio jlk m,. for 9 directions like a numpad, so even simpler than the usual shortcuts with modifiers (think of the menu as a mode in a text editor).