According to one embodiment of the invention, the comparator 515 includes {HEAD ~ the application} of heuristics 530 to {TAIL ~ the comparison} 
to
According to one embodiment of the invention , the comparator 515 includes { HEAD ~ the application } of heuristics 530 to { TAIL ~ the comparison }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL