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2 definitions found
 for MDL
From V.E.R.A. -- Virtual Entity of Relevant Acronyms (September 2014) :

  MDL
         Microstation Development Language (CAD)
         

From The Free On-line Dictionary of Computing (18 March 2015) :

  MDL
  
     (Originally "Muddle").  C. Reeve, Carl Hewitt and Gerald
     Sussman, Dynamic Modeling Group, MIT ca. 1971.  Intended as a
     successor to Lisp, and a possible base for Planner-70.
     Basically LISP 1.5 with data types and arrays.  Many of its
     features were advanced at the time (I/O, interrupt handling
     and coroutining), and were incorporated into later LISP
     dialects ("optional", "rest" and "aux" markers).  In the mid
     80's there was an effort to use bytecoding to make the
     language portable.  CLU was first implemented in MDL.  Infocom
     wrote Zork in MDL, and used it as the basis for the ZIL
     interpreter.
  
     Implementations exist for ITS, TOPS-20, BSD 4.3, Apollo
     Domain, SunOS and A/UX.
  
     ["The MDL Programming Language", S.W. Galley et al, Doc
     SYS.11.01, Project MAC, MIT (Nov 1975)].
  

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