Comment by lukego

Joe used to have all that code in his world-readable NFS-mounted home directory. He would just create a new directory for every idea or project. Take it with him from one computer to the next.

I hope that's preserved and one day published as e.g. the old MIT AI lab file system snapshots were.

(Robert Virding or Bjärne Däcker might well have a copy of the Prolog code to share if asked nicely.)