IIRC it was a multi-user DOS clone. It allowed you to attach terminals to your pc and have the terminals run certain DOS apps (obviously nothing with graphics). It actually worked pretty well when used with special made Kimtron terminals (the terminal had a "normal" pc keyboard layout). I wrote a video store POS system that utilized this setup at one of my customers locations, pretty slick running on a NCR 286 w/ three terminals (four users total, though the console was primarily used for admin). George