The first voltage forms {HEAD ~ a first write current} for {TAIL ~ a first time duration} through the resistive sense memory cell in a first direction 
for
The first voltage forms { HEAD ~ a first write current } for { TAIL ~ a first time duration } through the resistive sense memory cell in a first direction
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH