/** Adds the listeners for the "how to" window */
 public void addHowToWindowListeners() {
   // Called when clicking on the "close" button
   win.getHowToWindow()
       .getCloseButton()
       .addActionListener(
           new ActionListener() {
             public void actionPerformed(ActionEvent arg0) {
               win.getHowToWindow().dispose();
               win.setHowToWindow(null);
             }
           });
 }