A method and apparatus for supplying a variety of stylish sleeves for wear with sleeveless outfits. An elastic cord connects each clip to the cover and keeps the clips in a selected place. A test component embedded in the memory subsystem can perform a stress test and identify specific bits or lines of memory that experience failure under one or more stresses. When a guard ring around one of the intersections would otherwise overlap with a guard ring around another one of the intersections, a common sidelobe inhibitor is located at the common overlap region of the guard rings. The mixing chamber has an exhaust input to receive exhaust from a burning fuel, and an ambient air input for receiving ambient air.