vi is painful over slow lines, maybe that was it? When I started at SCO in '86 my terminal connected at 9600 baud to a VME 68000 box named "scotty" running Xenix. (All our servers had names containing "sco". Over the years I think we had to settle for just having the letters somewhere in the name.) 9600 baud was luxury after university, where all our terminals connected at 2400 baud.