clips-doc 6.23-2 (amd64 binary) in ubuntu dapper

"C" Language Integrated Production System Documentation
 This package contains the documentation (users guide, interfaces guide...)
 of CLIPS, as well as some programming examples that might be useful
 to new programmers.
 .
 CLIPS 6.2 is an OPS-like forward chaining production system written
 in ANSI C by NASA. The CLIPS inference engine includes truth maintenance,
 dynamic rule addition, and customizable conflict resolution strategies.