Emacs, which still uses CUI-incompatible keybindings and even key names from a keyboard that hasn't been made since the 01980s. Videogames. Excel still suppo

Emacs, which still uses CUI-incompatible keybindings and even key names from a keyboard that hasn't been made since the 01980s. Videogames. Excel still supports MS-DOS Lotus 1-2-3 "/" commands, although it certainly doesn't look like Lotus for MS-DOS. Basically any software people care about is an exception to your rule.