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MDL provides several enhancements to classic Lisp. It supports several built-in data types, including lists, strings and arrays, and user-defined data types. It offers
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before the MDL project began, but his subsequent thinking on
Planner reflected lessons learned from building MDL. Planner concepts influenced languages such as
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can carry both a local value within a scope, and a global value, for passing data between scopes. Advanced built-in functions supported interactive
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455:, sometimes called Dungeon, was first written in MDL. Later, Reeve, Daniels, Galley and other members of Dynamic Modeling went on to start
376:. This style of self-deprecating humor was not widely understood or appreciated outside of Project MAC. So the name was sanitized to MDL.
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Although MDL is obsolete, some of its features have been incorporated in later versions of Lisp. Gerald
Sussman went on to develop the
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904:. Massachusetts Institute of Technology, Laboratory for Computer Science
874:. Massachusetts Institute of Technology, Laboratory for Computer Science
846:. Massachusetts Institute of Technology, Laboratory for Computer Science
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and Joel Berez adapted the MDL language to create a subset called ZIL (
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418:. Carl Hewitt had already published the idea for the language
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1907:
MIT Computer
Science and Artificial Intelligence Laboratory
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of the
Artificial Intelligence Lab, and Chris Reeve,
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929:. Massachusetts Institute of Technology. p. 69
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809:"Graphical Programming and Monitoring RADC-TR-88-7"
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443:But the largest influence that MDL had was on the
436:, in turn, influenced Hewitt's future work on the
1816:Structure and Interpretation of Computer Programs
924:"A Device-Independent Graphics Manager for MDL"
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793:(Interview). Interviewed by Jason Scott. 15:00.
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8:
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1913:Stanford Artificial Intelligence Laboratory
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357:The initial development team consisted of
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410:, who later wrote the specifications for
839:Dornbrook, Michael; Blank, Marc (1980).
2280:Dynamically typed programming languages
841:"MDL Programming Primer MIT-LCS-TR-292"
778:
1016:Computer Simulation and History (SimH)
990:Computer Simulation and History (SimH)
867:Galley, Stu W.; Pfister, Greg (1979).
478:to create their award winning games.
306:, or colloquially also referred to as
1901:Massachusetts Institute of Technology
459:, a company that produced many early
324:Massachusetts Institute of Technology
7:
2234:
1918:University of California, Berkeley
1762:Scheme Requests for Implementation
14:
1579:Knowledge Engineering Environment
899:"The MDL Programming Environment"
807:Licklider, J.C.R (January 1988).
2290:Lisp programming language family
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2244:
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2233:
2223:
2213:
821:from the original on May 3, 2019
486:This is a sample of PDP-10 MDL:
474:) which was used extensively by
406:language, in collaboration with
330:. It was developed in 1971 on a
814:. Rome Air Development Center.
791:"GET LAMP Bob Supnik Interview"
318:, a descendant of the language
897:Lebling, P. David (May 1980).
869:"The MDL Programming Language"
767:Planner (programming language)
463:works of interactive fiction.
16:Lisp-like programming language
1:
1688:Common Lisp Interface Manager
762:Scheme (programming language)
395:of MDL programs, incremental
1087:Automatic storage management
947:Dyer, Richard (1984-05-06).
752:Zork Implementation Language
472:Zork Implementation Language
1336:Game Oriented Assembly Lisp
885:Markdown/HTML transcription
128:; 44 years ago
103:; 53 years ago
2306:
1010:Supnik, Bob (2007-09-02).
984:Supnik, Bob (2018-06-04).
383:expression evaluation and
304:Model Development Language
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1937:
1165:Common Lisp Object System
1082:
1069:Lisp programming language
372:MDL was initially called
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246:
141:
115:
1865:Bolt, Beranek and Newman
1795:Common Lisp the Language
488:
451:(IF). An IF game named
308:More Datatypes than Lisp
922:Lim, Poh Chuan (1982).
174:Implementation language
1800:How to Design Programs
1639:Portable Standard Lisp
1285:Steel Bank Common Lisp
1250:Embeddable Common Lisp
1223:Armed Bear Common Lisp
1102:Higher-order functions
2109:Shriram Krishnamurthi
1811:Practical Common Lisp
1767:Common Lisp HyperSpec
1291:Symbolics Common Lisp
1267:Macintosh Common Lisp
949:"Masters of the Game"
2285:Functional languages
2013:Robert Tappan Morris
1967:Robert Bruce Findler
1735:Space-cadet keyboard
1146:Tree data structures
1123:Read–eval–print loop
789:(October 25, 2006).
316:programming language
1755:Technical standards
1218:Allegro Common Lisp
449:interactive fiction
312:MIT Design Language
292:interactive fiction
98:First appeared
21:
2119:Gerald Jay Sussman
2104:Matthias Felleisen
2056:Richard P. Gabriel
1987:Richard Greenblatt
1962:Matthias Felleisen
1245:Corman Common Lisp
2267:
2266:
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2195:Robin Popplestone
2114:Guy L. Steele Jr.
2081:Guy L. Steele Jr.
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1599:Lisp Machine Lisp
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338:and later ran on
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147:Typing discipline
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955:. Archived from
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725:.RMS>>>
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432:. Smalltalk and
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64:Designed by
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2167:Mitchel Resnick
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1991:Timothy P. Hart
1952:William Clinger
1942:Edmund Berkeley
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1833:ProgramByDesign
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1256:GNU Common Lisp
1239:CMU Common Lisp
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1190:Implementations
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1021:
1019:
1012:"Software Kits"
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992:. Bitsavers.org
986:"Software Kits"
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1034:External links
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1018:. Forum PDP-11
1002:
976:
971:"Zork-mdl.zip"
962:
959:on 1997-06-07.
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740:.EXITS>>
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359:Gerald Sussman
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31:Multi-paradigm
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2190:Rod Burstall
2157:Brian Harvey
1723:Lisp machine
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1199:Standardized
1138:Self-hosting
1119:(deprecated)
1107:Linked lists
1092:Conditionals
1020:. Retrieved
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994:. Retrieved
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957:the original
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942:
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876:. Retrieved
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823:. Retrieved
781:
728:<MAPLEAVE
677:<MAPLEAVE
674:.RMS>>
641:<MAPLEAVE
638:.RMS>>
551:<FUNCTION
485:
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2142:Hal Abelson
2076:Kent Pitman
2043:Common Lisp
1995:Louis Hodes
1982:Paul Graham
1977:Phyllis Fox
1747:of practice
1728:TI Explorer
1321:Chez Scheme
1171:CommonLoops
787:Supnik, Bob
536:<UVECTOR
482:Code sample
438:actor model
412:Common Lisp
397:development
363:Carl Hewitt
328:Project MAC
288:actor model
272:Common Lisp
236:Open-source
92:Project MAC
73:Carl Hewitt
2274:Categories
2023:David Park
2018:Joel Moses
1999:Mike Levin
1875:Lucid Inc.
1826:Curriculum
1659:Spice Lisp
1560:Franz Lisp
1550:Emacs Lisp
1410:TinyScheme
1234:Clozure CL
1022:2018-12-18
996:2018-12-18
933:2019-05-18
908:2018-12-18
878:2018-12-18
850:2019-05-18
825:2019-05-18
773:References
719:<DROOM2
707:<DROOM1
491:<DEFINE
468:Marc Blank
461:commercial
408:Guy Steele
385:coroutines
254:Influenced
43:reflective
39:procedural
35:functional
2065:10th rule
1894:Education
1880:Symbolics
1870:Harlequin
1781:Education
1745:Community
1574:Interlisp
1390:Scheme 48
1367:MultiLisp
1342:GNU Guile
1262:LispWorks
1128:Recursion
692:<TYPE?
662:CEXIT>
656:<TYPE?
623:<TYPE?
605:<TYPE?
581:DIRECTION
447:genre of
430:Smalltalk
393:debugging
389:Variables
326:'s (MIT)
284:Smalltalk
84:Developer
26:Paradigms
2260:Category
2250:Category
1853:Business
1715:Hardware
1664:Zetalisp
1649:S-1 Lisp
1634:Picolisp
1524:BBN LISP
1519:AutoLISP
1467:StarLogo
1428:OpenLisp
1384:features
1141:compiler
1076:Features
816:Archived
746:See also
737:>>
716:<MEMQ
713:.RMS>
704:<MEMQ
698:DOOR>
665:<MEMQ
632:<MEMQ
629:ROOM>
599:<COND
593:DOOR>
548:<>
545:<MAPF
466:In 1980
445:software
334:running
183:Platform
2240:Commons
1909:(CSAIL)
1885:Xanalys
1806:On Lisp
1629:PC-LISP
1619:newLISP
1604:Maclisp
1564:PC-LISP
1543:history
1529:Clojure
1492:(POP-1)
1472:UCBLogo
1462:NetLogo
1457:MSWLogo
1352:JScheme
1326:Chicken
1310:History
1241:(CMUCL)
1176:Flavors
1158:systems
689:<AND
653:<AND
620:<AND
494:EXIT-TO
476:Infocom
457:Infocom
421:Planner
344:TOPS-20
314:) is a
264:Planner
231:License
216:TOPS-20
152:Dynamic
131: (
106: (
2096:Scheme
1931:People
1818:(SICP)
1802:(HTDP)
1697:Genera
1692:McCLIM
1589:LeLisp
1555:EuLisp
1501:POP-11
1490:COWSEL
1420:ISLISP
1380:Racket
1347:Ikarus
1338:(GOAL)
1331:Gambit
1316:Bigloo
1301:Scheme
1287:(SBCL)
1280:Poplog
1276:Movitz
1225:(ABCL)
1208:Common
1167:(CLOS)
1156:Object
1112:Macros
722:.E>
710:.E>
701:<OR
671:.E>
578:<OR
434:Simula
426:Prolog
404:Scheme
374:Muddle
350:, and
332:PDP-10
280:Prolog
268:Scheme
188:PDP-10
156:strong
53:Family
2230:Books
1903:(MIT)
1788:Books
1772:X3J13
1654:SKILL
1614:MLisp
1584:*Lisp
1538:Apple
1534:Dylan
1496:POP-2
1258:(GCL)
1252:(ECL)
1229:CLISP
927:(PDF)
902:(PDF)
872:(PDF)
844:(PDF)
819:(PDF)
812:(PDF)
731:T>
680:T>
668:<2
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590:NEXIT
587:CEXIT
518:EXITS
500:EXITS
352:AEGIS
340:TENEX
224:AEGIS
212:TENEX
163:Scope
2220:List
2134:Logo
1702:Scsh
1682:List
1449:Logo
1400:SIOD
1372:Pico
1357:Kawa
1272:Mocl
1210:Lisp
757:Zork
584:ROOM
566:DECL
539:>
524:EXIT
512:DECL
453:Zork
428:and
416:Java
414:and
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320:Lisp
276:Java
248:Lisp
133:1980
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1482:POP
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530:RMS
503:RMS
348:BSD
336:ITS
310:or
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260:ZIL
220:BSD
208:ITS
192:VAX
177:MDL
89:MIT
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