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