4 items:
 (BIN) MDL_Primer_and_Manual.pdf
       [19-Feb-2018]
       MDL Primer and Manual (1977)
       by Stu Galley and Greg Pfister. This
       documents the MDL interpreter version 54
       (ITS) and version 104 (TENEX), and is an
       earlier version of
       "The MDL Programming Language" document
       that is also here.
       [file is linked from infocom/info/]
       
 (BIN) MDL_Programming_Environment.pdf
       [13-Jul-2007]
       The MDL Programming Environment (1980),
       by David Lebling.
       [file is linked from infocom/info/]
       
 (BIN) MDL_Programming_Language.pdf
       [13-Jul-2007]
       The MDL Programming Language (1979),
       by Stu Galley and Greg Pfister. This
       documents the MDL interpreter version 55
       (ITS) and version 105 (TENEX and TOPS-20).
       [file is linked from infocom/info/]
       
 (BIN) MDL_Programming_Primer.pdf
       [13-Jul-2007]
       The MDL Programming Language Primer (1980),
       by Michael Dornbrook and Marc Blank.
       [file is linked from infocom/info/]
       
       
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