The name of the file containing the data to be loaded. The
    default file extension is .unl.

    When the Audit qualifier is specified, the input-file-name
    parameter is the name of the journal containing the audit record
    data to be loaded. The default file extension is .AUDIT$JOURNAL.
    You can determine the name of the security audit journal by using
    the DCL SHOW AUDIT/JOURNAL command.