anchor.diff:      _docPanel = querySelector('#documentation');
     }
     
  -  void registerOutputPanel() {
  -    _outputPanel = querySelector('#frameContainer');
  -  }
  -  
     void registerPaperDrawer() {
       _docPanel = querySelector('#documentation');
     }
  
positive.code:   }
    
    void _reset() {
      _router = new Router()
        ..root.addRoute(name: 'home', defaultRoute: true, enter: showHome)
        ..root.addRoute(name: 'gist', path: '/:gist', enter: showGist)
        ..listen();
  
negative.code:     registerMessageDialog();
      registerResetDialog();
      registerDocPanel();
      registerSelectorTabs();
      registerBusyLight();
      registerEditProgress();
  