A rail position control system is provided that controls a conveyor system configuration to accommodate a plurality of differently sized substrates in an apparatus. A liquid crystal display generates a display light of information with a plane of polarization inclined by about 45 relative to an image plane vertical axis. The color filter unit is disposed in a groove of the transparent substrate for transforming a beam of light sent to the color filter unit into the beam of light of a predetermined hue. The sync-charger cable operates both to exchange data and to deliver power, without utilizing an AC adapter or a docking cradle.