Requires read (R), write (W), and control access. Being the owner
    of the file is one way to get control access.

    Marks one or more RMS files for after-image journaling. You can
    also specify certain characteristics of the journal with this
    command, including its file specification, whether it is to be
    created, its initial size, and its default extension quantity.
    The SET FILE/NOAI_JOURNAL command unmarks a file for after-image
    journaling.

    The SET FILE command is not supported for remote files. You
    must use the SET FILE command from the system where the file
    is located.

    For more information, see the RMS Journaling documentation.

    Format

      SET FILE/[NO]AI_JOURNAL=(FILE=journal-filespec[,...])

                             data-filespec[,...]