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

       /DEFINITIONS=n

    (Alpha only) When the code is optimized, displays n definition
    points for a split-lifetime variable. A definition point
    is a location in the program where the variable could have
    received its value. By default, up to five definition points are
    displayed. If more than the given number of definitions (explicit
    or default) are available, then the number of additional
    definitions is reported as well. (For more information on split-
    lifetime variables, see OpenVMS Debugger Manual.)

    The minimum abbreviation is /DEFI.