don't forget the fact that in 1999 the best maps to exist were hand drawn sketches using pencil & paper and scanned. There wasn't even maps available for every zone. So given those facts then no, this program could not have existed in 1999
example: Jan 18, 2000 - no map for highkeep hold (and the highpass map is done in crayon)
http://web.archive.org/web/200001181...hpasshold.html