anchor.diff:  
     code-example(language="basic").
       &gt; <span class="blk">pub build</span>
  -    Loading source assets...
  -    Loading angular2 transformers...
  +    Loading source assets... 
  +    Loading angular2 transformers... 
       INFO: Formatter is being overwritten.
  -    Building hello_world... (3.1s)
  +    Building hello_world... (3.8s) 
       [Info from Dart2JS]:
       Compiling hello_world|web/main.dart...
       [Info from Dart2JS]:
  -    Took 0:00:16.123086 to compile hello_world|web/main.dart.
  -    Built 41 files to "build".
  -  //- REGENERATE THIS OUTPUT - or delete it? - when updating from 2.0.0-alpha.25
  +    Took 0:00:15.612746 to compile hello_world|web/main.dart.
  +    Built 63 files to "build".
  +  //- REGENERATE THIS OUTPUT - or delete it? - when updating from 2.0.0-alpha.26
   
     p.
       The generated JavaScript appears, along with supporting files,
  
positive.code:     Update <code>web/main.dart</code>, adding the following code
      after the imports:
  
    code-example(language="dart" format="linenums:5").
      @Component(
        selector: 'my-app'
      )
  
negative.code:   code-example(language="dart" format="linenums").
      import 'package:angular2/angular2.dart';
      import 'package:angular2/src/reflection/reflection.dart' show reflector;
      import 'package:angular2/src/reflection/reflection_capabilities.dart'
          show ReflectionCapabilities;
  //- STEP 3 - Define a component ##########################
  .l-main-section
  
  