To better guide the operator during this “walk,” the best fit between the reference template and {HEAD ~ each} of {TAIL ~ the first and second paced signals} is simultaneously displayed 
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To better guide the operator during this “ walk , ” the best fit between the reference template and { HEAD ~ each } of { TAIL ~ the first and second paced signals } is simultaneously displayed
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH