A strategy is described for forwarding content accessed using a first device to a second device. Instead, a trip coil of the instantaneous tripping device is connected to a main circuit via a connection conductor of a low resistance, a test-tripping part is mounted in place of the shifter of the differential shifter mechanism, and the adjustment dial is replaced with a dummy dial. In another embodiment, there are one or more discontinuities in the plurality of graft segments. At a transitional part at the outer ends of the bore the bore diameter narrows down to be substantially equal to the inner tube diameter of the circulation vloop. The release body has an operating part projecting outward from the base, and a striking part positioned inside the base.