ruler.addDecorator(0, new AnnotationRulerColumn(VERTICAL_RULER_WIDTH));
ruler.addDecorator(0, new AnnotationColumn(VERTICAL_RULER_WIDTH));
	protected IVerticalRuler createVerticalRuler() {		CompositeRuler ruler= new CompositeRuler();		ruler.addDecorator(0, new AnnotationRulerColumn(VERTICAL_RULER_WIDTH));		if (isLineNumberRulerVisible())			ruler.addDecorator(1, createLineNumberRulerColumn());		return ruler;	}