The present invention provides a string fastening device which allows a string to be threaded thereinto easily, facilitates tightening of the string and enables the string to be gripped softly and captured accurately. For example, such a method can method comprise reacting together a compound of formula ZnX2 with at least one compound chosen from compounds of formulas RM1T, R2M1, and RM2. An apparatus may facilitate providing windowing information for display. A resilient member is positioned between the electrical load and the device under test such that a force directed on the electrical load compresses the resilient member to allow contact between a plurality of electrical contacts of the electrical contact assembly and the plurality of the electrical contacts on the device under test. The introducing port 33b is formed such that the gas is introduced into the inhibiting groove 41 substantially parallel to the upper surface 31c. Prior to the reprovisioning analysis, the detected audible sounds are analyzed to determine whether they are an authorization code.