Editing Space-cadet keyboard (section)

{{Short description|Keyboard used on MIT Lisp machines, influential to Emacs}}
[[File:Space-cadet.jpg|thumb|400px|right|The [[Symbolics]]-labeled {{dubious-span|version|reason=Someone should confirm if it was really a different ''version'' – not just a different label on an identical keyboard, or else just make this say "Symbolics-labeled space cadet keyboard"|date=March 2025}} shown here was only used with the LM-2, which was Symbolics' repackaged version of the [[Lisp machine|MIT CADR]]. Later Symbolics systems used a greatly simplified keyboard, the [[Symbolics#Symbolics keyboard|Symbolics keyboard]], that retained only the basic layout and the more commonly used function and [[modifier key]]s from the space-cadet keyboard.<ref>{{Cite web
| title=Space-cadet Keyboard and Lisp Machine Keyboards
| author=Xah Lee
| date=2011-10-27
| url=http://xahlee.info/kbd/lisp_keyboards.html}}</ref>]]

The '''space-cadet keyboard''' is a keyboard designed by John L. Kulp in 1978 and used on [[Lisp machine]]s at [[Massachusetts Institute of Technology]] (MIT),<ref>{{Cite web| title=some ideas about the keyboard design for the LISP machine | format=TXT | url=https://raw.githubusercontent.com/mietek/mit-cadr-system-software/master/src/lmdoc/kbdpro.3 | archive-url=https://web.archive.org/web/20190228004001/https://raw.githubusercontent.com/mietek/mit-cadr-system-software/master/src/lmdoc/kbdpro.3 | archive-date=2019-02-28}}</ref><ref>{{Cite web | url=https://people.csail.mit.edu/gregs/ll1-discuss-archive-html/msg02212.html |title = Re: Pretty-lambdas}}</ref><ref>{{Cite web | url=https://news.ycombinator.com/item?id=2191014 |title = I know this is another "neckbeard" comment (Love that term), but anyone who ever... &#124; Hacker News}}</ref> which inspired several still-current jargon terms{{Citation needed|date=April 2022}} in the field of [[computer science]] and influenced the design of [[Emacs]]. It was inspired by the [[Knight keyboard]], which was developed for the Knight TV system, used with MIT's [[Incompatible Timesharing System]].