{HEAD ~ The document} 10 is moved in {TAIL ~ direction} 14 so that all portions of the document are eventually illuminated by the line of light, or scan line 16, which is produced by the illuminating devices of the scanner 
is moved in
{ HEAD ~ The document } 10 is moved in { TAIL ~ direction } 14 so that all portions of the document are eventually illuminated by the line of light , or scan line 16 , which is produced by the illuminating devices of the scanner
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH