/sys$common/syshlp/helplib.hlb EDIT, /ACL, /MODE, Example  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  $ EDIT/ACL/MODE=NOPROMPT WEATHERTBL.DAT

      With this command, you initiate an ACL editing session to
      create an ACL for the file WEATHERTBL.DAT. The /MODE=NOPROMPT
      qualifier specifies that no assistance is required in entering
      the ACL entries.