input-file-spec

    The name of the text or Runoff .MEM file to convert to
    PostScript. Only a single file can be specified; wildcards cannot
    be used.

 output-file-spec

    An optional parameter specifying the name of the file to which
    to write the PostScript. If no file name is specified, then the
    output file will have the same name as the input file but with a
    file extension of .PS.