anchor.diff:  
   ----
   
  -In a layer, you can now add panels and arrange them. Panels are containers that mark the areas where you want to display text, images, or controls (buttons etc) later.
  +In a layer, you can now add panels and arrange them. Panels are containers that mark the areas where you want to display text, images, or controls (buttons etc) later. To connect a screen with a ScreenController you need to specify the fully qualified class name of
  +your ScreenController in the controller attribute of the <screen> tag. For this example, we use the `DefaultScreenController`. 
   
   
   === Make Panels
  
positive.code:       <!-- ... -->
      </layer>
    </screen>
    <screen id="hud">
      <layer id="background" backgroundColor="#000f">
        <!-- ... -->
      </layer>
  
negative.code: ----
  
  <nifty>
    <screen id="start" controller="de.lessvoid.nifty.screen.DefaultScreenController">
      <layer id="background" backgroundColor="#000f">
        <!-- ... -->
      </layer>
  