a display unit adapted to display {TAIL ~ an image} corresponding to input {HEAD ~ image data} on a display surface 
a display unit adapted to display { TAIL ~ an image } corresponding to input { HEAD ~ image data } on a display surface
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH