FIG 3 is an enlarged view of {TAIL ~ the viewing window} along with {HEAD ~ associated counter parts} 
FIG 3 is an enlarged view of { TAIL ~ the viewing window } along with { HEAD ~ associated counter parts }
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD