hello; just thought that some folks might find this of use or interest -- SIOD packages, for versions up to 3.0 or so, in the CMU AI repository: http://www-2.cs.cmu.edu/afs/cs/project/ai-repository/ai/lang/scheme/impl/siod/ SIOD docs, too: http://www.cs.indiana.edu/scheme-repository/imp/siod.html -- sean
