anchor.diff:          final float mistakeRate = mistakeCount / totalChars;
           print('mistakeRate: ${mistakeRate * 100}%');
       }
  +
  +    void initWidget() {
  +        document.body.elements.add(accomponement);
  +    }
   }
   
   TypeTrainer typeTrainer;
  
positive.code:         marquee.width = '100%';
  
          buildControls();
      }
  
      void bindHandlers() {
  
negative.code: 
  class TypeTrainer {
      MarqueeElement marquee;
      AudioElement accomponement;
      //    http://upload.wikimedia.org/wikipedia/commons/b/b1/11_-_Vivaldi_Winter_mvt_2_Largo_-_John_Harrison_violin.ogg
      //    http://upload.wikimedia.org/wikipedia/commons/2/21/12_-_Vivaldi_Winter_mvt_3_Allegro_-_John_Harrison_violin.ogg
  
      static final int spaceCharCode = 32;
      static final String cursor = '|';
  