What sort of keyboard was that? The space cadet keyboard is often cited as inspiration for the Emacs combos. The Wikipedia article suggests its layout had most

What sort of keyboard was that? The space cadet keyboard is often cited as inspiration for the Emacs combos. The Wikipedia article suggests its layout had mostly-symmetrical meta keys: https://en.wikipedia.org/wiki/Space-cadet_keyboard https://en.wikipedia.org/wiki/Space-cadet_keyboard