# MDL_Primer_and_Manual.pdf 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 to MDL_Primer_and_Manual.pdf] # MDL_Programming_Environment.pdf The MDL Programming Environment (1980), by David Lebling. [file is linked to MDL_Programming_Environment.pdf] # MDL_Programming_Language.pdf 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 to MDL_Programming_Language.pdf] # MDL_Programming_Primer.pdf The MDL Programming Language Primer (1980), by Michael Dornbrook and Marc Blank. [file is linked to MDL_Programming_Primer.pdf]