DISCRETE CODE a wide variety of causes. Also, colloquially, an area of separation between two lamina in the finished laminate (in this case the term delamination is normally preferred). (See also Debond.) DISCRETE CODE A bar code in which the inter-character gap is not part of the code and is allowed to vary dimensionally within wide tolerance limits. DISCRETE WIRING BOARD A base material upon which dis- crete wiring techniques are used to obtain electrical interconnec- tions. DISK OPERATING SYSTEM (DOS) This is the program that tells the computer how to operate. DISPLAY ELEMENTS In computer graphics, the basic building symbols for an application used to construct display images, e.g., points, line segments, and characters. DISPLAY FORMAT The organization of different types of data in a display, including information about the data such as labels and other user guidance such as prompts, error messages, etc.