A fastening element for fastening one or more parts to one another, the fastening element including a head, a shank depending form the head, and a flexible pull cord coupled to an end surface of the shank. A selected data structure may be specified at start-up time or run-time using a mapping table that tracks the specified data structures for each generic container used by the program. According to the circuit configuration of the present invention, it is possible to provide a circuit readily performing integration and to efficiently output only a double frequency merely by inputting a simple differential signal without the need for the original signal which has been phase controlled. Based on the evaluating, a connection is established to a first wireless network of the plurality of wireless networks using a first wireless modem of the plurality of wireless modems operable for communication according to the first wireless network. A method of lifting a vending machine using the apparatus described herein. The method and apparatus are capable of correctly recording and reproducing data without causing errors even with occurrence of size changes in the widthwise direction of a magnetic tape.