The whole manual says alt+meta+x. Alt is Meta on modern keyboards. You can use ESC to emulate Meta in some applications. But this doesn't work here. It should

The whole manual says alt+meta+x. Alt is Meta on modern keyboards. You can use ESC to emulate Meta in some applications. But this doesn't work here. It should say A-W-x (alt+super+x) Super is Windows key these days. https://en.wikipedia.org/wiki/Space-cadet_keyboard#/media/File:Space-cadet.jpg https://en.wikipedia.org/wiki/Space-cadet_keyboard#/media/Fi...