Optical switch comprising optical means and driving means on a substrate, cooperating with optical means to make them pivot between a rest position and at least one active position. The apparatus selectively captures and displays a plurality of digital images using different wavelengths of illuminating light. A list of audiovisual content that is determined to be relevant to the text-based search request is presented. The wireless network sends a message to the WTRU which indicates whether the wireless network supports MIH services and a supported MIH mode. The pin consists of a hollow tube flanged on one end and of substantially the same dimensions as a standard clevis pin. The laser irradiation unit is equipped with a movable laser emission part for emitting laser beams to tissues, a motor for reciprocating a laser emission part, and a guide lumen for supporting an endoscope in such a way as to enable it to move in the direction of the laser emission part.