"one letter DOS"(kindof emulator for DOS). Any user who would run it, would just have to type a single letter to execute / display something. For example, if one wants to clear the screen, he has to just type the letter 'b' (b for blank). 'h' for help!

Life would be a lot simpler if users did just 26 things.. Seriously, we need both that's why all OS have a "command line" -- Gishu