Library /sys$common/syshlp/mailhelp.hlb DEFINE, /KEY, Qualifiers, /TERMINATE  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /TERMINATE
       /NOTERMINATE

    Determines whether the specified command string executes when
    you press the key. When you use the /NOTERMINATE qualifier, you
    must press the Return key to execute the command string. You
    cannot define a key specifying both the /SET_STATE and /TERMINATE
    qualifiers.