In response to {HEAD ~ a users operational specification} of {TAIL ~ one divisional area} among the N divisional areas, an enlarged photographic image corresponding to the specified divisional area at a desired magnification ratio is displayed on the screen 
In response to { HEAD ~ a users operational specification } of { TAIL ~ one divisional area } among the N divisional areas , an enlarged photographic image corresponding to the specified divisional area at a desired magnification ratio is displayed on the screen
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL 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 OTH OTH OTH OTH OTH OTH OTH