The replacement of {TAIL ~ the value} by the new value modifies the computer program while the computer program is executed by {HEAD ~ the processor} 
The replacement of { TAIL ~ the value } by the new value modifies the computer program while the computer program is executed by { HEAD ~ the processor }
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD