A method of making an electrically operated memory element. The mobile system maintains at least one user data and identification data with respect to the user data used for processing at least one service, sets a session key for the service system, and encrypts service data identified based on the identification data to transmit to the service system. The rack includes a base module having pair of spaced end supports. The weighting factors for the two matrices can be determined based on an estimate of the overscan. The driven gear is carried by the drive platen and is operably communicating with the second elongated gear rack and the drive gear. The clip has a plurality of grasping arms which are operated to be moved by the operational elongate body or the introduction tube, at least in a direction where the grasping arms are closed, so as to grasp the body tissue; and a retracting portion which retracts a portion of the body tissue between the plurality of grasping arms.