A process for preparing styrene by contacting a gaseous feed which contains 1-phenylethanol and at least 0. A light-shielding layer is formed on the semiconductor substrate around the pixel area. The controller produces an indication of magnetization based on the reference voltage, the detected permanent magnet induced voltage, and the predetermined speed. The latent oxide pattern is then used to mask an etch. The EPGs of the present invention can display programming that a viewer is more likely to watch at a particular time than other programming. Offsets are adjusted at this time so that the counted missing frames point to the pseudo frame.