Library /sys$common/syshlp/tracehlp.hlb START, /EVENT  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    /EVENT=(event-type,...)

    Determines what types  of  events  are  included  in  the  analyzed
    output.

    See ANALYZE/EVENT for full details.

    Only valid with /LIVE qualifier.