Anyone know the years of release for AutoCAD (and LT) going back over the years? I have a pretty good idea when 2004, 2002, 2000i, 2000, R14 and R13 were released, but wondered if there was a definitive list somewhere. Better still, a list showing significant changes with each release. What about R15? Was there ever such a thing? I have came across some references to it. Thanks.