A stepper motor accelerating system is used for accelerating a stepper motor from a current rotational speed to a target rotational speed. A broadcast provider broadcasts a travel program together with travel destination information related to it, and a television terminal presents the received broadcast and travel destination information to the user. Consequently, the swivel snap hook can be molded such that the front-end outside engaging face of the stopper piece is closed to the front-end inside engaging face of the hook body.