VMS Help SHOW, KEY, Qualifiers, /DIRECTORY  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Displays the names of all states for which keys have been
    defined. If you have not specified a state with a key definition,
    the SHOW KEY/DIRECTORY command displays DEFAULT for the state.

    You cannot use the /DIRECTORY qualifier with any of the other
    SHOW KEY qualifiers.