On Mon, Apr 07, 2008 at 03:00:25PM -0600, Nathan Lane wrote: > > Can anybody answer me this? This Squeak run on top of a SmallTalk runtime > environment? Or is is the SmallTalk runtime environment? Yes, and yes. The classic "Back to the Future" paper will give some perspective: http://users.ipa.net/~dwighth/squeak/oopsla_squeak.html Dave