Micro Hard and Soft's Gloriously Execellent, Efficient, and Zealously Enterprising Renderer, or better known as MHS-GEEZER or just GEEZER, is a command-line interface embedded as the core of the OS in all modern Doors computers excluding the NT family. Originally called SF-Eighty Six!, it was a Quick and Dirty program slapped together by a bunch of nerds in 1984 in the then-new quest to create a better operating system.