:version "19-OCT-92"
:description "VPS2 -- Interpreter for OPS5
This Common Lisp version of OPS5 is in the public domain. It is based
in part on based on a Franz Lisp implementation done by Charles L. Forgy
at Carnegie-Mellon University, which was placed in the public domain by
the author in accordance with CMU policies. Ported to Common Lisp by
George Wood and Jim Kowalski. CMU Common Lisp modifications by
Dario Guise, Skef Wholey, Michael Parzen, and Dan Kuokka.
Modified to work in CLtL1, CLtL2 and X3J13 compatible lisps by
Mark Kantrowitz on 14-OCT-92. The auto.ops and reactor.ops demo files
were provided by Michael Mauldin. In year 2013, ported to modern Common
Lisp implementations and added support for quicklisp by Xiaofeng Yang.
This code is made available is, and without warranty of any kind by the
authors or by Carnegie-Mellon University.
Documentation for OPS may be found in the OPS5 User's Manual, July 1981,
by Forgy, CMU CSD.
This version of OPS5 was obtained by anonymous ftp from
ftp.cs.cmu.edu:/user/ai/areas/expert/systems/ops5/ops5_cl.tgz
"