I ported Charlie Forgy’s OPS5 to InterLisp-D and added a nice UI and a few utilities. Most of my development work however was doing demos for specific potentia

I ported Charlie Forgy’s OPS5 to InterLisp-D and added a nice UI and a few utilities. Most of my development work however was doing demos for specific potential clients. It was easy enough to put something tailored together, then a senior person would bring potential clients into my office and I would mostly talk with them while showing them their demo. So, not much practical. That was 40 years ago.