The common user interface elements rendered around each Web Parts part control within a given zone. The chrome for a part control includes a border, a title bar, and the icons, title text, and verbs menu that appear within the title bar. The appearance of the chrome is set at the zone level and applies to all part controls in a zone. The rendering of chrome and of individual System. Web. UI. WebControls. WebParts. WebPart controls is handled by the System. Web. UI. WebControls. WebParts. WebPartChrome class.