Library /sys$common/syshlp/acledt.hlb ACE_FLAGS  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    (type, option_flags, access_to_grant)

    The option_flags field defines any options to be applied to the
    ACE. It can be any of the following:

       DEFAULT
       HIDDEN
       NONE
       NOPROPAGATE
       PROTECTED