First use of GUI would be late 1983. HP had it on a portable that my roomies and I used for classes and to run the Fantasy and WarGaming Society FalCon convention. Then used it on the Xerox SNAP system at VOA, about 1986. I didn't touch MS Windows until I think 1988 at soonest. Edwin Bukont CSRE, DRB, CBNT V- 240.417.2475; F- 240.368.1265