In the first option, a user may navigate through {HEAD ~ the layout data} to identify {TAIL ~ a particular X and Y location} to make a cut, create a probe point, or to connect a net 
to identify
In the first option , a user may navigate through { HEAD ~ the layout data } to identify { TAIL ~ a particular X and Y location } to make a cut , create a probe point , or to connect a net
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH