A game machines has a back side display unit composed of reels for displaying back patterns, and a front side display unit composed of transparent EL panels for displaying overlapping patterns overlapping with the back patterns. On the Internet, a terminal device transmits print data to a print server managing a printer so as to use the printer for printing. The pans are characterized by an acoustic impedance approximating the acoustic impedance of green concrete, thereby optimizing the energy transferred to the concrete. Copper alloy interconnect lines may be formed by providing a doped seed layer with a capping layer to prevent premature oxidation, forming an overlying copper layer, driving in the dopants, and polishing to form individual lines. An improved synthesis of 17-methylenandrost-4-en-3-ol is disclosed. In still another embodiment, there are two paths from a single server to two separate base stations and then from each base station there is a separate path to the mobile client.