{TAIL ~ An interactive display system} includes {HEAD ~ a display} such as a cathode ray tube , for example, and a display controller 
{ TAIL ~ An interactive display system } includes { HEAD ~ a display } such as a cathode ray tube , for example , and a display controller
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 OTH OTH