The pointer value changes over {TAIL ~ a period} are labeled {HEAD ~ Extra Long Mega Frame} which consists of n Mega Frames 
The pointer value changes over { TAIL ~ a period } are labeled { HEAD ~ Extra Long Mega Frame } which consists of n Mega Frames
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH