SVCD (n)~ An optical disc format used to store video on standard compact discs developed by China Recording Standards Committee in competition to the DVD format. SVF (n)~ A function that returns a single value such as a string integer or bit value. SVG (n)~ An XML-based language for device-independent description of two- dimensional graphics. SVG images maintain their appearance when printed or when viewed with different screen sizes and resolutions. SVG is a recommendation of the World Wide Web Consortium (W3C).