into a hard disk 102 or a semiconductor memory 103 serving as a recording medium which is built in a computer 101, as shown in FIG. 15A. [0134] Alternatively, the program is recorded temporarily or perpetually into recording media, such as a floppy disk 111, a compact disc read-only memory (CD-ROM) 112, a magnetooptical (MO) disk 113, a digital versatile disk (DVD) 114, a magnetic disk 115, and a