The method includes executing an application program from {TAIL ~ a plurality} of {HEAD ~ application programs} on an operating system of a personal computer 
The method includes executing an application program from { TAIL ~ a plurality } of { HEAD ~ application programs } on an operating system of a personal computer
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH