## Full example

    [Exposed=Window]
    interface Paint { };

    [Exposed=Window]
    interface SolidColor : Paint {
    	attribute double red;
    	attribute double green;
    	attribute double blue;
    };

    [Exposed=Window]
    interface Pattern : Paint {
    	attribute DOMString imageURL;
    };

    [Exposed=Window]
    interface GraphicalWindow {
    	constructor();
    	readonly attribute unsigned long width;
    	readonly attribute unsigned long height;

    	attribute Paint currentPaint;

    	undefined drawRectangle(double x, double y, double width, double height);

    	undefined drawText(double x, double y, DOMString text);
    };