updateDisplay.runNow();
	public void clearHighlightedPaths() {		Iterator i = _registry.getNodeItems();		while(i.hasNext()) {			PNode pnode = (PNode) ((VisualItem) i.next()).getEntity();			pnode.setPathElement(false);			pnode.setStartPoint(false);			pnode.setEndPoint(false);		}				i = _registry.getEdgeItems();		while(i.hasNext()) {			PEdge pedge = (PEdge) ((VisualItem) i.next()).getEntity();			pedge.setPathElement(false);		}		repaint();	}