/OPTIONS=options-filename

    Specifies a file that contains processing option for both input
    and output. An options file is a text file with a default file
    extension of .CDA$OPTIONS on OpenVMS systems.

    An options file is not required. Default processing options are
    applied automatically when you convert a file. You may, however,
    require settings other than the default. Processing options can
    help ensure minimal changes when your input file is converted to
    a different output file format.