anchor.diff:        sb.writeln('<p>');
         sb.write('Incompatible with: ');
         var rule = incompatibleRules.first;
  -      sb.write('<a href = "$rule.html" >$rule</a>');
  +      sb.write(
  +          '<!--suppress HtmlUnknownTarget --><a href = "$rule.html" >$rule</a>');
         for (var i = 1; i < incompatibleRules.length; ++i) {
           rule = incompatibleRules[i];
           sb.write(', <a href = "$rule.html" >$rule</a>');
  
positive.code:   }
  
    String _generate() => '''
  <!doctype html>
  <html>
     <head>
        <meta charset="utf-8">
        <meta http-equiv="X-UA-Compatible" content="chrome=1">
        <title>Analysis Options</title>
        <link rel="stylesheet" href="../../stylesheets/styles.css">
        <link rel="stylesheet" href="../../stylesheets/pygment_trac.css">
        <script src="../../javascripts/scale.fix.js"></script>
        <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
        <!--[if lt IE 9]>
        <script src="//html5shiv.googlecode.com/svn/trunk/html5.js"></script>
        <![endif]-->
     </head>
    <body>
        <div class="wrapper">
           <header>
              <a href="https://dart-lang.github.io/linter/">
                 <h1>Dart Lint</h1>
              </a>
              <p>Analysis Options</p>
              <p class="view"><a href="https://github.com/dart-lang/linter">View the Project on GitHub <small>dart-lang/linter</small></a></p>
              <ul>
                <li><a href="https://dart-lang.github.io/linter/lints/">List of <strong>Lint Rules</strong></a></li>
                <li><a href="https://github.com/dart-lang/linter">View On <strong>GitHub</strong></a></li>
              </ul>
           </header>
           <section>
  
  
negative.code:                and tailor to fit!
              </p>
  
              ${markdownToHtml(generateOptions())}
  
           </section>
        </div>
        <footer>
           <p>Maintained by the <a href="https://dart.dev/">Dart Team</a></p>
           <p>Visit us on <a href="https://github.com/dart-lang/linter">Github</a></p>
        </footer>
     </body>
  </html>
  ''';
  