@nprofile1q...@nprofile1q... PUB seems to have enjoyed a period of popularity at SAIL and MIT, but was supplanted by SCRIBE and TeX.
MIT also had an in-house version of roff called R, written in C.
Lisp machine documentation was written in Bolio which was written in Maclisp. The name was a play on the ice cream store Emack & Bolio's, obviously referring to a certain text editor.
@nprofile1q...@nprofile1q... I was about to ask, does the book cover TJ6, PUB, and SCRIBE? Originating at MIT, Stanford, and CMU, respectively, but ported between the sites.