anchor.diff:  Exemple:
   --------------------------------------
   abstract template;
  -#renderer body(List<String> list)
  +#def body(List<String> list)
     <ul>
     #for(i : list)
  -    <li>#render item(i)</li>
  +    <li>#call item(i)</li>
     #end
     </ul>
   #end
  -#renderer abstract item(String i)
  +#def abstract item(String i)
   --------------------------------------
   
   Template Options
  
positive.code: --------------------------------------
  abstract template;
  
  #renderer hello()
    Hello World
  #end
  --------------------------------------
  
negative.code: 
  private File path;
  
  public void setPath(File path) {
    this.path = path;
  }
  
  #def path()
    $(path.getAbsolutePath())
  #end
  --------------------------------------
  