This code implements the Behave! system, originally developed for the Virtual Fishtank exhibit and described here: http://alumni.media.mit.edu/~mt/behave/behave.html

It runs only under a very obsolete version of Macintosh Common Lisp, so is presented here mostly for historical purposes.

Some of the ideas from Behave! have been incorporated into the Scratch envrionment http://scratch.mit.edu

and into the BioBike VPL: http://nar.oxfordjournals.org/content/37/suppl_2/W28.full

Mike Travers