A work-hardened poppet exhaust valve for internal combustion engines is obtained from a solutioned work-hardenable austenitic stainless steel coil or bar stock in which chromium is present in the range of 13%-25% by weight, nickel is present in the range of 4%-16% by weight, manganese is present in the range of 0. The video corresponds to a spatial-temporal volume. If the user’s finger touches the next component key of the function selecting key, the cursor is shifted to the other item corresponding to the next component key. A method of positioning a display is also provided. The adjustable water heater support uses a sandwich of two supports in a cam configuration that are indexable in a plurality of finite engagement positions to slightly alter the vertical orientation of the water heater to account for variations and or horizontal orientation of the water heater mounting surface.