anchor.diff:      entityOverviewContainer.elements.add(containerTable);
       _fragment.elements.add(entityOverviewContainer);
   
  -         void selected() {
  +         void initWidget() {
             final SelectElement entityRangeSelector = document.body.query('#entityRangeSelector');
                entityRangeSelector.autofocus = true;
                entityRangeSelector.on.change.add((e) {
  
positive.code: 
      document.body.elements.add(_fragment);
  
      entityContainer.addUiHandler();
      entityContainer.refreshSymbolList();
      entityViewer.addUiHandler();
      
      
  
  
    }
  
    Element get root() => _fragment;
  
negative.code:     _fragment.elements.add(viewer);
  
  
          void initWidget() {
              final ButtonElement display = document.body.query('#symbol-display');
              display.on.click.add((e) => displaySymbol());
            }
  
            document.on.readyStateChange.add((e) => initWidget());
    }
  
  
  
    void displaySymbol() {
      final List<Element> a = document.queryAll('.viewBox');
  