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