/OPTION_FILE[=file-spec]
       /NOOPTION_FILE (default)

    CNBUILD can optionally produce an option file that contains
    correct table sizes to hold the configuration that was just
    compiled (plus a little room for growth). The /OPTION_FILE
    qualifier causes this file to be output. By default, this file
    is the file pointed to by the PMDF_OPTION_FILE logical, normally
    PMDF_TABLE:OPTION.DAT. The value on the /OPTION_FILE qualifier
    may be used to specify an alternate file name. If the /NOOPTION_
    FILE qualifier is given, then no option file will be output.

    CNBUILD always reads any option file that is already present
    via the PMDF_OPTION_FILE logical name; use of this qualifier
    will not alter this behavior. However, use of the /MAXIMUM
    qualifier causes CNBUILD to read PMDF options from the PMDF_
    TABLE:MAXIMUM.DAT in addition to reading PMDF_OPTION_FILE. This
    file specifies near maximum table sizes. Only use this qualifier
    if the current table sizes are inadequate, and only use it to
    create a new option file. The /NOIMAGE qualifier should always be
    specified when /MAXIMUM is specified since a maximum-size image
    would be truly enormous and extremely wasteful.