In response to this comparison, the interpreter 30 adjusts {HEAD ~ the value} of {TAIL ~ the pulse count} Data1 by adding or subtracting from the pulse count 
In response to this comparison , the interpreter 30 adjusts { HEAD ~ the value } of { TAIL ~ the pulse count } Data1 by adding or subtracting from the pulse count
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH