This is a funny cartoon and subsequent discussion thread from the
 Multics discussion group about emacs.
 Names and personal info edited out due to archival by unknown parties of
 the list and that these folks might not want names and certainly not
 email addresses archived.  Mentioning that not as a criticism, just to
 explain the format.  I also edited the thread back to bottom posting.
 Original XKCD cartoon link.
 
https://xkcd.com/378/
 > From: Multicians <snip>
> Subject: Re: [multicians] Emacs humor
>
>>
>>
>> Thanks, Gary.  As an emacs diehart, I fully appreciate that.  In 
 fact,
there is a silly phrase that many emacs users use, when referring
 to all the obscure key bindings that you get by default with emacs, or
 can create.  It.s called:
 >>
>> Control-Meta-Shift-Cokebottle
>>
>> I believe the history (someone can correct me if I.m wrong) is that 
 Emacs
was developed at the MIT AI Lab (by Richard Stallman) and
 initially written in Teco. It was developed on Lisp machines, which
 sported lots of modification keys on its keyboard. These included
 Control, Shift, Hyper, Meta, Super (and perhaps more). Naturally, emacs
 took advantage of some of these . at least those that were available on
 multiple terminals or could be emulated on lesser terminals. I remember
 when I worked at MIT LCS (down the hall from MIT AI), we had a key
 binding on our Lisp Machines that called the elevator to the 8th floor.
 I don.t remember the key binding, but I.m sure it used a few of these
 modification keys (and probably .e. for .elevator. as the modified key).
 In any case, the class of these funky key bindings was referred to as
 Control-Meta-Shift-Cokebottle.
 >>
>> I.m sure I.ve gotten some of the facts wrong, but I.m also sure 
 that at
least someone on this list will correct me!
 > On Dec 1, 2015, at 11:30 AM, Ken
<snip>> wrote:
>
>
> I seem to recall that one of the Lisp machine keyboard modifiers was 
"Top", and that the phrase was therefore
 >
>> Control-Shift-Meta-Top-Cokebottle
>>
> Where, of course, you were typing the "Cokebottle" key with the 
Control, Shift, Meta, and Top modifier keys depressed.
 >
> I think the elevator hack involved the AI Lab PDP-6 (or maybe, 
 later, PDP-10),
but I wouldn't be surprised if it migrated to the Lisp
 machines, too  The old -6, especially, had added hardware to enable it
 to control the various robot devices the AI lab played with. Some AI
 Lab hardware guys gained access to the machinery room on the 10th floor
 and added some extra relay circuitry to one of the elevator controllers,
 and it wasn't much of a stretch to run the control wires down to the 9th
 floor machine room. IIRC it took a few years for whatever company was
 responsible for maintaining the elevators to discover the unauthorized
 modification and remove it.
 >
> How long it stayed removed is an entirely different question, of 
 course.
 >
> Ken
>   MIT-LCS '72-'80
>   Multics ARPANET software
> 
 On 12/1/2015 11:42 AM, Eric  <snip> [multicians] wrote:
 I just knew I had that facts wrong! Yes, you.re right. I remember the 
 Top key now.
 I do know that the elevator hack worked on Lisp machines, but I think 
 you.re right
that it also worked on some other interfaces.  I remember
 getting frustrated when I.d be .ready to leave. (at 2am, or so), and
 would call the elevator, and then I.d have to fix .one more bug., and by
 the time I got to the elevator, I actually had to push the boring old
 button to get the elevator doors to open!  :-)
 . Eric