DBG$HELP.HLB  —  DEBUG  SET  BREAK  Qualifiers  /SYSTEM
       /SYSTEM (default)
       /NOSYSTEM

    Qualifies /INTO. Use with /INTO and one of the following
    qualifiers:

       /BRANCH
       /CALL
       /INSTRUCTION
       /LINE

    The /SYSTEM qualifier permits the debugger to break within system
    routines (P1 space) as well as other routines. The /NOSYSTEM
    qualifier specifies that breakpoints not be set within system
    routines.
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