As a result, {HEAD ~ the initial or reference map} of media density stored in {TAIL ~ the memory} 50 is a two dimensional map, rather than the one dimensional map A of FIG 4 
stored in
As a result , { HEAD ~ the initial or reference map } of media density stored in { TAIL ~ the memory } 50 is a two dimensional map , rather than the one dimensional map A of FIG 4
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH