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`!Lisp Machine Lisp`! is a `F33f`_`[programming language`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Programming_language]`_`f, a `F33f`_`[dialect`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Dialect_(computing)]`_`f of the language `F33f`_`[Lisp`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Lisp_(programming_language)]`_`f. A direct descendant of `F33f`_`[Maclisp`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Maclisp]`_`f, it was initially developed in the mid to late 1970s as the `F33f`_`[system programming`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=System_programming]`_`f language for the `F33f`_`[Massachusetts Institute of Technology`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Massachusetts_Institute_of_Technology]`_`f (MIT) `F33f`_`[Lisp machines`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Lisp_machine]`_`f. Lisp Machine Lisp was also the Lisp dialect with the most influence on the design of `F33f`_`[Common Lisp`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Common_Lisp]`_`f.
Lisp Machine Lisp branched into three dialects. `F33f`_`[Symbolics`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Symbolics]`_`f named their variant ZetaLisp. `F33f`_`[Lisp Machines`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Lisp_Machines]`_`f, Inc. and later `F33f`_`[Texas Instruments`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Texas_Instruments]`_`f (with the `F33f`_`[TI Explorer`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=TI_Explorer]`_`f) would share a common code base, but their dialect of Lisp Machine Lisp would differ from the version maintained at the `F33f`_`[MIT AI Lab`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=MIT_Computer_Science_and_Artificial_Intelligence_Laboratory]`_`f by `F33f`_`[Richard Stallman`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Richard_Stallman]`_`f and others.
>>Contents
• `F0af`_`[Manual`#manual]`_`f
• `F0af`_`[Traits`#traits]`_`f
• `F0af`_`[References`#references]`_`f
-─
>>Manual
The Lisp Machine Manual describes the Lisp Machine Lisp language in detail.`:cite-ref-1[`F5bf`_`[1`#cite-note-1]`_`f]`:cite-ref-2[`F5bf`_`[2`#cite-note-2]`_`f] The manual was popularly termed the `*Chine Nual`*, because the full title was printed across the front and back covers such that only those letters appeared on the front.`:cite-ref-3[`F5bf`_`[3`#cite-note-3]`_`f] This name is sometimes further abbreviated by blending the two words into `*Chinual`*.
>>Traits
Lisp Machine Lisp features include:
• Support for `F33f`_`[object-oriented programming`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Object-oriented_programming]`_`f via an object system named `F33f`_`[Flavors`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Flavors_(programming_language)]`_`f
• Uses `F33f`_`[dynamic binding`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Scope_(computer_science)]`_`f, but supports `F33f`_`[closures`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Closure_(computer_programming)]`_`f with a special construct
• Integer numbers were read and printed in `F33f`_`[octal`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Octal]`_`f (base 8) by default`:cite-ref-4[`F5bf`_`[4`#cite-note-4]`_`f]`:cite-ref-5[`F5bf`_`[5`#cite-note-5]`_`f]
• Dividing floating point numbers returned decimals, dividing integers returned `F33f`_`[rational numbers`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Rational_number]`_`f (`F33f`_`[fractions`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Fraction_(mathematics)]`_`f)
>>References
`:cite-note-1`!1.`! `F0af`_`[↑`#cite-ref-1]`_`f `:citerefhuebner1984`aHuebner, Hans, ed. (January 1984). "Lisp Machine Manual, Hypertext (6th) edition". `*GitHub`*. Retrieved November 30, 2018.
`:cite-note-2`!2.`! `F0af`_`[↑`#cite-ref-2]`_`f `:citerefmoonstallmanweinreb1981`aMoon, David; Stallman, Richard M.; Weinreb, Daniel (March 1981). "Lisp Machine Manual, 3rd Edition" (PDF). `*Bitsavers.org`*. Archived (PDF) from the original on September 6, 2008. Retrieved November 30, 2018.
`:cite-note-3`!3.`! `F0af`_`[↑`#cite-ref-3]`_`f "chine nual". `*Cool Jargon`*. Retrieved November 30, 2018.
`:cite-note-4`!4.`! `F0af`_`[↑`#cite-ref-4]`_`f "Page 3 of Lisp Machine Manual 3rd Edition" (PDF). Archived (PDF) from the original on August 8, 2010.
`:cite-note-5`!5.`! `F0af`_`[↑`#cite-ref-5]`_`f "Currently the default radix for the Lisp Machine system is eight".
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