This schema describes the Renderer configuration's markup language which allows you to create element renderers in the application. Renderers are used to render data in display components such as Grids. A renderer is defined in XML, and instances are created from the XML definition at runtime. The XML definition specifies the JavaScript classes that are used to construct each instance of the Renderer, and you can either write your own custom formatter, parser or display control classes, or use one or more of the JavaScript classes provided with the Renderer framework.