code: def setBreak(self,breakFlag = True):
          
          if breakFlag:
              _parseMethod = self._parse
              def breaker(instring, loc, doActions=True, callPreParse=True):
                  import pdb
                  pdb.set_trace()
                  _parseMethod( instring, loc, doActions, callPreParse )
              breaker._originalParseMethod = _parseMethod
              self._parse = breaker
          else:
              if hasattr(self._parse,"_originalParseMethod"):
                  self._parse = self._parse._originalParseMethod
          return self
docs: Method to invoke the Python pdb debugger when this element is
             about to be parsed. Set breakFlag to True to enable, False to
             disable.