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