Learn about the first emacs implementation to use lisp. Bernard Greenberg's vast, unpublished 1979 "Mother of All Multics Emacs papers" (a meta-paper from which all others were ultimately excerpted) contains lots of implementation detail.
Multics was the acronym for "Multiplexed Information and Computing Service" - a mainframe timesharing operating system begun in 1965 and used up until 2000. Although this was the immediate forerunner of the Unix operating system, it was also in many w...