Library /sys$common/syshlp/sysmanhelp.hlb STARTUP, ADD, Qualifiers, /CONFIRM  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /CONFIRM
       /NOCONFIRM (default)

    Controls whether SYSMAN displays the file specification of each
    file before adding it to the startup database and requests you to
    confirm the addition. If you specify /CONFIRM, you must respond
    to the prompt with a Y (Yes) or a T (True) and press Return
    before the file is added. If you enter anything else, such as
    N or No, the requested file is not added.