I will buy many beers if anyone can find me the original version. It was much different! Maybe better. Instead of finding yourself in a Vax/UNIX, you were in

I will buy many beers if anyone can find me the original version. It was much different! Maybe better. Instead of finding yourself in a Vax/UNIX, you were inside a Dec-20 running Twenex. It used the COMND library, which simulated the COMND JRST. I wrote the elisp version trying to remember the "sort" of stuff I did with the original version, but even I would be surprised by what was actually in there...