anchor.diff:        }
         buffer.write("</div>");
       } else {
  -      buffer.writeln(describe);
  +      buffer.writeln(div('$describe', cls: "element"));
       }
     }
   }
  
positive.code:         extraString].join(' ');
  
      if (contents != null) {
        buffer.write(div("+$describe", cls: "container"));
        buffer.write('<div class="contained">');
        if (contents.isEmpty) {
          buffer.writeln("No members");
  
negative.code:   CodeInfoNode({this.description: "", this.generatedCode});
  
    void emitHtml(ProgramInfo programInfo, StringBuffer buffer) {
      buffer.write('\n');
      buffer.write(div(description + ' ' +
                       sizeDescription(generatedCode.length, programInfo),
                       cls: 'kind') +
  