VMS Help DCE_SECURITY, Admin Intro, DCE$IMPORT, IMPORT, Parameters  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 vms-username

    Specifies the name of the OpenVMS account that is to be
    imported.

    If an asterisk is specified in place of the vms-username,
    all accounts from the OpenVMS system authorization
    file are selected.