anchor.diff:  
       libraryDocAnalyzer.addToSortedRows(scoreSection, score.toInt(), reverse: true);
       ImageElement shieldImg = new ImageElement()
  -        ..attributes['src'] = dc.shieldUrl()
  -        ..classes.add('shield');
  +      ..attributes['src'] = dc.shieldUrl()
  +      ..classes.add('shield');
   
       String nameHtml = '$classType $className';
       if (classType == 'class')
  
positive.code: 
      scoreSection = libraryDocAnalyzer.scoresTable.createTBody();
      TableRowElement classRow = scoreSection.addRow()
          ..classes.add('error');
  
      libraryDocAnalyzer.addToSortedRows(scoreSection, 0, reverse: true);
  
  
negative.code: 
    Map<String,dynamic> klass;
    DocCoverage dc;
    String name, docUrl;
    TableSectionElement scoreSection;
  
    ClassDocAnalyzer(this.libraryDocAnalyzer, this.classType, this.klassBrief);
  
    void go(String screen) {
      name = klassBrief['name'];
      String qualifiedName = klassBrief['qualifiedName'].replaceFirst(':', '-');
      docUrl = libraryDocAnalyzer.htmlUrl != null ?
          '${libraryDocAnalyzer.htmlUrl}.$name' : null;
      HttpRequest.getString('${libraryDocAnalyzer.base}/$qualifiedName.json').then((String json) {
        klass = new JsonDecoder().convert(json);
        dc = new DocCoverage(klass);
        if (screen == 'score')
  