G3-file-spec

    The name of a PMDF-FAX G3 file. G3 will check that a proper G3
    file is specified and will abort execution when supplied the name
    of a non-G3 file. Only a single input file name may be supplied;
    wildcards are not allowed.

 DDIF-file-spec

    The name of a DDIF file (CDA document) to which to write the
    input file's bitmaps. This file will be created by G3 and may
    subsequently be viewed with the CDA viewer as shown in the
    example below. If the /NOCDA or /EDIT qualifies are used, then
    this parameter must be omitted.