VMS Help DCE_SECURITY, Admin Intro, DCE$EXPORT, EXPORT, Data Qualifiers, /DIRECTORY=directory  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /DIRECTORY=directory

    Specifies the default directory name for the DIRECTORY field of
    the OpenVMS SYSUAF record. The directory name can be 1 to 63
    alphanumeric characters. If you do not enclose the directory name
    in brackets, EXPORT adds the brackets for you.

    The default directory name is [username] where username is the
    OpenVMS account's username.