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<h1>Envdraw</h1>
EnvDraw is a environment diagramming package which draws environment
diagrams as taught in Abelson and Sussman's _Structure and
Interpretation of Computer Languages_. It was written as an
instructional tool for the CS61A course at the University of
California at Berkeley. The environment diagrammer is a metacircular
evaluator which draws procedures, environments, and box and pointer
diagrams along with all the accompanying symbols and mutation. It
includes a box and pointer diagrammer which handles circular list
structures, cons cell mutation, and also will watch for modification
of any symbols known to be pointing to drawn cells.
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<address><a href="mailto:eg@unice.fr">Erick Gallesio</a></address>
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