A method for manufacturing a three-dimensional high voltage transistor is disclosed. The activity platform for supporting persons engaged in water activities includes a platform area extending outwardly from and alongside the associated structure. The plurality of panels includes at least one panel having first and second opposing sides and an aperture extending through the first and second sides, wherein the at least one of the plurality panels having the aperture is at least one of the at least one substantially horizontal panel and the at least two substantially vertical panels. These messages are sent using means that perform that flag reset without, in the preferred embodiment, any overhead of interruption of processing on the computers where the flags reside. The self unplugging power connector includes electrical contact members for an electrical outlet, a release mechanism to remove the electrical contact members from the outlet and a current sensing circuit to activate the release mechanism when the circuit senses a current reduction. A first regulating portion against which an annular member placed on a shaft portion of the drive roller abuts when the cover pivots toward the body frame to close off the image carrier and a second regulating portion with which an engagement portion formed in the casing in a direction orthogonal to the axial direction of the drive roller engages are formed on the body frame.