Formerly S5.5-1985. Provides a system of graphic symbols for conveying information on visual display units (VDUs) used for process monitoring and control. Intended to ensure compatibility of symbols on process VDUs with related symbols used in other disciplines. The standard applies to computers, distributed control systems, etc., and covers both color and monochromatic displays. It supplements ISA-S5.1 and ISA-S5.3.
