From the layout data the user has {HEAD ~ two options} for defining {TAIL ~ a specific location} for a probe point, cut, or net connection 
for defining
From the layout data the user has { HEAD ~ two options } for defining { TAIL ~ a specific location } for a probe point , cut , or net connection
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH