If you want to spell out a new word, how does it work? For this system, You’d need an input device that sends its input to a dictionary and then sends that thr

If you want to spell out a new word, how does it work? For this system, You’d need an input device that sends its input to a dictionary and then sends that through the normal input? Like another poster here, vim’s modal editing bit with chording makes me wonder what could be achieved with a normal keyboard