The present invention provides a firewall that achieves maximum network security and maximum user convenience. The central portion is separated from the tread shoulder portions by two circumferential grooves and at least one circumferential row, included between a first and a second circumferential groove, is present in the central portion. The file management information generation module generates, based on the acquired metadata, file management information based on which a host apparatus recognizes the content data as a file stored in a storage medium in the electronic apparatus. The sub-plans, especially the functional plans of the individual plane, are automatically generated from the technology plan, and the individual sequences of the program code are generated from the functional plans. Since the user directly controls movement of the cleaning robot, it is possible to improve interactivity between human and cleaning robot, reduce the user’s labor and increase convenience.