Process 400 may then proceed to {HEAD ~ oval} 460 to end {TAIL ~ a write process} 
to end
Process 400 may then proceed to { HEAD ~ oval } 460 to end { TAIL ~ a write process }
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL