The invention also relates to {HEAD ~ a program} for causing a computer to perform {TAIL ~ the three dimensional display method} 
The invention also relates to { HEAD ~ a program } for causing a computer to perform { TAIL ~ the three dimensional display method }
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL