public UndoableEdit(
		Node node, 
		String oldText, 
		String newText, 
		int oldPosition, 
		int newPosition, 
		int oldMarkPosition, 
		int newMarkPosition) 
	{
		this.node = node;
		this.newText = newText;
		this.oldText = oldText;
		this.newPosition = newPosition;
		this.oldPosition = oldPosition;
		this.newMarkPosition = newMarkPosition;
		this.oldMarkPosition = oldMarkPosition;
	}