A lock structure for an electrical device includes a rotatable fastener and a lock body. The setting server accepts an input of user communication parameters from the interface on-screen image. The software agent may reside in a personal digital assistant and can be operated to communicate with the defibrillator to access the data stored in the defibrillator irrespective of the version of software of the defibrillator. The pass-through multi-version policy results in a new offline version of a file each time that a client opens and writes to a multi-version file. Such modified Factor VIII cDNA may be used for a higher yield production of Factor VIII in vitro as well as in a transfervector for gene therapy. Generally L-shaped concrete blocks are laid side by side and are laid in courses, each of which is positioned slightly inward from the course immediately below it to form a retaining wall.