ABE: A COOPERATIVE OPERATING SYSTEM AND DEVELOPMENT ENVIRONMENT**Reprinted from AI Tools and Techniques, M. Richer (ed.), Ablex Publishing, Norwood, NJ, 1988.This is an early description of in-progress research. The ideas described here require experimental testing and will likely change. This does not constitute a commitment by Teknowledge to any product or service. ABE is a trademark of Teknowledge, Inc.This research is partially sponsored by the Air Force Systems Command, Rome Air Development Center, Griffiss Air Force Base, NT 13441-5700 and the Defense Advanced Research Projects Agency, 1400 Wilson Blvd., Arlington, VA 22209, under contract F30602-85-C-0135.