MMS                  Used to invoke MMS from a description file.
    MMSALPHA             Defined as 'Alpha' if MMS is running on Alpha.
    MMSARCH_NAME         The architecture name on which MMS is running
                             (i.e. 'IA64', 'Alpha' or 'VAX').
    MMSDESCRIPTION_FILE  The full file specification of the description
                         file specified (or implied) by the command line.
    MMSIA64              Defined as 'IA64' if MMS is running on IA64.
    MMSQUALIFIERS        The command line qualifiers used to invoke MMS.
    MMSTARGETS           The target list specified on the command line.
    MMSVAX               Defined as 'VAX' if MMS is running on VAX.

    Note: the MMSIA64, MMSVAX and MMSALPHA macros can be used with the
          .IF directive to include description file lines that should
          only be processed for the appropriate architecture.