A frame system that will run in a current Lisp is Parmenides [1]. [1] https://www.cs.cmu.edu/afs/cs/project/ai-repository/ai/areas/kr/systems/frames/parmenid/0

A frame system that will run in a current Lisp is Parmenides [1]. [1] https://www.cs.cmu.edu/afs/cs/project/ai-repository/ai/areas/kr/systems/frames/parmenid/0.html https://www.cs.cmu.edu/afs/cs/project/ai-repository/ai/areas...