anchor.diff:    /**
      * This method exists because Windows don’t support symlinks (or similar 
      * feature) for files without additional permissions. Because of this 
  -   * restriction it is not possible to use the Dart class [Link] on Windows 
  -   * systems. The purpose of the method is therefore to use different 
  +   * restriction it is not possible to use the Dart class 
  +   * [Link](http://api.dartlang.org/docs/releases/latest/dart_io/Link.html) on 
  +   * Windows systems. The purpose of the method is therefore to use different 
      * implementation on different systems.
      * 
      * On Windows we use hardlinks because they are possible to use without 
      * additional permissions. Dart do not support creating hardlinks so we call 
  -   * the mklink command from the Windows cmd instead.
  -   * 
  -   * On all other systems we use the [Link] class to create symlinks.
  +   * the [:mklink:] command from the Windows cmd instead.
  +   * 
  +   * On all other systems we use the 
  +   * [Link](http://api.dartlang.org/docs/releases/latest/dart_io/Link.html) 
  +   * class to create symlinks.
      */
     static Future createLink(Path source, Path destination) {
       _log("Running createLink(${source.toString()}, ${destination.toString()})");
  
positive.code:        *  hash with the path so we can get the path later if only knowing the
         *  hash value.
         */
        String hash = _hashListToString(hash);
        _sourceCache[hash] = new Future.value(bytes);
        _hashToPathCache[hash] = path;
        
        // Parse the file with the scanner and get dependencies
        Runes runes = (new String.fromCharCodes(bytes)).runes;
  
negative.code:              * it. If changeCache is true we are allowed to change the file
               * content cache and add the file content to this cache.
               */
              Future<List<int>> returnValue = new Future.value(fileContent);
              if (canAddToCache) {
                _sourceCache[hash] = returnValue;  
              }
              return returnValue;
  