/PROTECTION=(ownership[:access][,...])

    Cannot be used to change the protection on a file by using DECnet
    software.

    Modifies the protection code of an object. The protection code
    defines the type of access allowed to users, based on their
    relationship to the object's owner.

    Specify the ownership parameter as system (S),  owner (O), group
    (G),  or world (W).

    Access types are class specific and are shown in the following
    table. For access, use the first letter of the access name.

        Object Class         Access Types

        CAPABILITY (VAX      Use, Control
        only)
        COMMON_EVENT_FLAG_   Associate, Delete, Control
        CLUSTER
        DEVICE               Read, Write, Physical, Logical, Control
        FILE (including      Read, Write, Execute, Delete, Control
        directory file)
        GROUP_GLOBAL_        Read, Write, Execute, Control
        SECTION
        LOGICAL_NAME_TABLE   Read, Write, Create, Delete, Control
        QUEUE                Read, Submit, Manage, Delete, Control
        RESOURCE_DOMAIN      Read, Write, Lock, Control
        SECURITY_CLASS       Read, Write, Control, Logical I/O,
                             Physical I/O
        SYSTEM_GLOBAL_       Read, Write, Execute, Control
        SECTION
        VOLUME               Read, Write, Create, Delete, Control