anchor.diff:  <html>
     <style>
       body { background-color: teal; }
  -    p { background-color: white; border-radius: 8px; border:solid 1px #555; text-align: center; padding: 0.5em;
  +    p { background-color: white; border-radius: 8px; border:solid 1px #555; 
  +        text-align: center; padding: 0.5em;
           font-family: "Lucida Grande", Tahoma; font-size: 18px; color: #555; }
     </style>
     <body>
  
positive.code: // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
  // for details. All rights reserved. Use of this source code is governed by a
  // BSD-style license that can be found in the LICENSE file.
  
  import "dart:io";
  import "dart:convert";
  
  const HOST = "127.0.0.1";
  const PORT = 8080;
  final REQUEST_PATH = "/time";
  
  
negative.code:   .then((HttpServer server) {
      server.listen(
          (HttpRequest request) {
            if (LOG_REQUESTS) {
              print("Request: ${request.method} ${request.uri} "
              "from ${request.connectionInfo.remoteAddress}");
            }
            if (request.uri.path == REQUEST_PATH) {
              requestReceivedHandler(request);
            }
  