entering a time constant value corresponding to the time {HEAD ~ constant Tp} into {TAIL ~ the memory} of the computing machine 
into
entering a time constant value corresponding to the time { HEAD ~ constant Tp } into { TAIL ~ the memory } of the computing machine
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH