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