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mdl

资料来源 : Free On-Line Dictionary of Computing

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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