Plot A represents {HEAD ~ the values} stored in {TAIL ~ the memory} 50 as a map of the scan path 22 during movement of the media 12 on its initial pass 
Plot A represents { HEAD ~ the values } stored in { TAIL ~ the memory } 50 as a map of the scan path 22 during movement of the media 12 on its initial pass
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD 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 OTH OTH