{TAIL ~ An image processing system} employs {HEAD ~ a scanner} to generate an image having gray content from an input halftone image 
{ TAIL ~ An image processing system } employs { HEAD ~ a scanner } to generate an image having gray content from an input halftone image
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH