DuckCorp Dico

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1.                 From The Free On-line Dictionary of Computing (19 January 2023):
                   
   
   
                   
                     
   M5
      Macro processor, a generalisation of M4 by A. Dain, U
      Cincinnati, 1992.  For Unix and DOS.
      (ftp://thor.exe.u.edu/pub/dain/m5).