VMS Help EDIT, /TECO, Qualifiers, /READ_ONLY  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /READ_ONLY
       /NOREAD_ONLY (default)

    Controls whether an output file is created. By default, an output
    file is created; the /READ_ONLY qualifier suppresses the creation
    of the output file.