VMS Help DECnet-Plus, DCL Commands, APPEND, Qualifiers, /PROTECTION  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /PROTECTION=(code)

    Qualifier type:        Output file qualifier

    Supported file types:  Local

    This qualifier defines the protection to be applied to the output
    file.

    Default value:         The default protection of the OpenVMS user
                           process (nonstandard default)