One interesting bit I (re-)learned from this is that Multics Emacs was the first Emacs implemented in LISP, so although RMS implemented the first Emacs in TECO, and implemented the currently most popular Emacs, LISP was introduced into it by someone else.
> Multics Emacs was the first Emacs implemented in LISP
No, the first Emacs in Lisp was the one from Dan Weinreb for the Lisp Machine, which was also the second Emacs implementation. It was called EINE, EINE Is Not Emacs. Then ZWEI, ZWEI Was EINE Initially.
If you edit please try Emacs.
PROGRAMMER GENERAL'S WARNING: Inferior
Editors Cause Decreased Productivity Or
Vaporware And May Complicate Development.
UniPress Emacs: Less than 90MB "tar"(1).
I remember using Multics Emacs at Cardiff in the early 80s. It was really noticeable how much more responsive it became when nobody else was using the system.
It’s not mobile friendly although maybe this says more about mobile browsers than the site itself, because it looks like a typical old school “mofo” style website (h1 h2 p etc. no css)
And RMS makes no secret of that: https://www.gnu.org/gnu/rms-lisp.html so I probably learned this before at some point.