Novel selenophene compounds useful as anti-tumor agents are described. Other aspects are described and claimed. A number of jetting orifices are formed to penetrate the outside plate, and a compressor is connected through a piping to the air space so as to charge it with a compressed air, so that this air is blown out through the orifices. Text is entered by pressing or touching a single text-input button and then passing a finger or thumb over additional buttons in a prescribed order.