Glossary 802.11 A set of standards for wireless local area network (WLAN) computer communication. Accent A design technique in concert lighting that con- centrates the illumination at strategic points on the stage to punctuate the music with heavy color or intensity. ACL (aircraft landing light) A PAR-64 design with a very narrow beam pattern which operates at 12 volts and was originated for jet aircraft then adapted for rock & roll. Air graphics Another word for air light. and incorporated by reference to the original contract. Normally, it contains specific physical requirements of the artist's current show such as stage size, power, dressing room needs, food, etc. Contrast range Brightness ratio between the lightest and darkest tones in a scene. Cyclorama Vertical surface used to form a background. Generally, it is monochromatic and is constructed of ei- ther hardwood with a fabric covering or heavy cloth, often muslin, stretched vertically and horizontally to create a smooth surface. Depth of field The zone or range that still shows clarity closer to and farther from a lens at sharpest focus. The zone increases as the lens aperture is reduced (often accomplished by increasing light level) or the lens angle is widened. Desk DMX British term for lighting control console. Digital Multiplexing. Air light The use of light beams to create patterns and design elements; the patterns may or may not be focused on the artist. Aircraft cable (wire rope) Cable made of stainless steel stranded wire of high tensile strength and used for hanging trusses, sound, and scenic elements where house pipes are not available; theatrical rigging usually uses 3/8- or 1/2- inch-diameter cable. ANSI American National Standards Institute. Art-Net A way of sending DMX information over information processing (IP) networks. It is Artistic Licence's proprietary name for their Ethernet cable, which can carry Digital light Luminaire that uses digital projection techniques to modify the beam parameters, primarily shape, intensity, and color and video content such as live images and recorded media.