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

    Vector mode options control the way in which the debugger
    interacts with the vector processor. For details about the SET
    VECTOR_MODE command, see the parameter descriptions.

    Related commands:

       (SHOW,SYNCHRONIZE) VECTOR_MODE