Library /sys$common/syshlp/dbg$help.hlb DEBUG, Messages, NOUSREVNT  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 no user-specified events are allowed; none are declared

    Facility: DEBUG, VMS Debugger

    Explanation: A reference was made to an event, when no such event
    had been defined (language not SCAN).

    User Action: Reenter the last command, without specifying any
    events.