A cutting tool assembly having a tool holder and a cutting tool. The lamp is placed next to the panel, and the lead wire is electrically connected to the lamp to form a conjunctive portion. The connectors are placed below the top surface of the sole member and above the bottom surface of the sole member. The compression of the tissue can be determined using various characteristics of the received light, such as the light intensity, as determined based at least partly on sensor readings. The position-limiting device is composed of two position-limiting holes bored on the vertical short side of the slide base and two insert studs fixed on the push plate portion of the press plate, and the two insert studs respectively received in the two position-limiting holes to prevent the slide base from sliding leftward or rightward. Assuming an available time slot, at the appropriate time the first proxy transfers control of the destination multicast session to the second proxy which transmits the secondary program.