[NO]MESSAGES[=([PRINT][,][KEEP])]

    Specifies what happens to job-generated event messages.

    MESSAGES or MESSAGES=PRINT specifies that messages are printed on a
    job log page.  The message file is deleted.

    MESSAGES=KEEP specifies that messages are recorded in the
    SYS$LOGIN:DCPS$JOB_nnn.LOG file, where "nnn" is the queue entry
    number for the job.

    NOMESSAGES specifies that messages are not recorded anywhere.

    The default is NOMESSAGES.