Otherwise the routine continues at process 1051 to retrieve {HEAD ~ the next byte} in {TAIL ~ the program} 
in
Otherwise the routine continues at process 1051 to retrieve { HEAD ~ the next byte } in { TAIL ~ the program }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL