In a magnetoresistive element of a magnetic memory, a inversion field Hc of at least a first magnetic layer is given by Hc=2\u2062Mswhere Ku and Ms are the perpendicular magnetic anisotropy constant and saturation magnetization of the first magnetic layer. Of the four windows displayed on the display screen, an active window which is currently being accessed is A, and other windows, i. The first and second support arms may be adjustably connected to an overhead support to permit swinging of the spinning wheel to a to and fro swinging motion with respect to the overhead support. The base and the backboard may include openings to permit the base and the backboard to be connected when the basketball goal system is in a collapsed or storage position. The rescue device may also have a flotation device, coupled to the rescue device, and has multiple lines coupling the rescue device to a rigging plate, and multiple lines coupling the rigging plate to the airborne device.