VMS Help  —  Sys Parameters, RMS_FILEPROT
    RMS_FILEPROT determines the default file protection for system
    processes such as those that create the error log, operator log,
    and job controller. It also determines default file protection
    for processes created by the job controller (all interactive and
    batch processes).

    Because a process always inherits its default file protection
    from its creator process, RMS_FILEPROT determines default file
    protection only for users who do not execute the DCL command SET
    PROTECTION/DEFAULT in their login command procedures or during
    interactive sessions.

    The protection is expressed as a mask. (See the discussion of
    the $CRMPSC system service in the VSI OpenVMS System Services
    Reference Manual for more information about specifying protection
    masks.) By default, the mask is 64000 (decimal) or FA00
    (hexadecimal), which represents the following protection:

    (S:RWED,O:RWED,G:RE,W:)
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