Electronic Message Center: A variable-message sign that utilizes computer-generated messages or some other electronic means of changing copy. These signs include displays using incandescent lamps, LEDs, LCDs, or a flipper matrix.Embellishments: Letters, graphics, mechanical devices, fiberoptics, lighting, cutouts, extensions, structure coverings, vicinity landscaping, or any other special-effect addition to a sign that will enhance its appearance and ability to effectively communicate its message.
Extensions: The area of design made as a cutout that extends beyond the basic rectangular space of a sign face or message.Exterior Illuminated Sign: A sign that is illuminated by a light source that is directed towards and shines on the face of a sign; also called direct illumination.
