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

    Deactivates a specified predefined breakpoint without affecting
    any user-defined breakpoints. When used with /ALL, deactivates
    all predefined breakpoints.