People who work in computer aided drafting technology use their skills to create two- and three-dimensional drawings on the computer. These drawings are used to visually represent buildings, bridges, canals, and houses. Computer aided drafting operators (technicians) take the sketches of an engineer, architect, or designer and produce a set of technical drawings. This program is only available to students seeking admission to the National Technical Institute for the Deaf. In addition to a strong emphasis on computer aided drafting, the major gives students a background in mathematics, building systems, construction regulations, site utilities, and materials and methods used in the architecture, engineering, and construction industries.