The illuminating light is further collected and directed toward the document by {TAIL ~ a pair} of reflective side surfaces which define {HEAD ~ walls} for the illumination station 
The illuminating light is further collected and directed toward the document by { TAIL ~ a pair } of reflective side surfaces which define { HEAD ~ walls } for the illumination station
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH