anchor.diff:      >模板中只有一行HTML：“*My First Angular App*”。
   
       >A more advanced template could contain data bindings to component properties
  -    and might identify other application compoents which have their own templates.
  +    and might identify other application components which have their own templates.
       These templates might identify yet other components.
       In this way an Angular application becomes a tree of components.
   
  
positive.code:   header 下载源码
    :marked
      Instead of following each step of these instructions, we can
      [download the QuickStart source](https://github.com/angular/quickstart/blob/master/README.md)
      from github and follow its brief instructions.
  
      如果不想跟着这里的操作指南来一步步地做，可以从github[下载“快速起步”的源码](https://github.com/angular/quickstart/blob/master/README.md)，这样只要注意那些操作要点就行了。
  
  .l-main-section
  button(class="verbose off md-primary md-button md-ink-ripple", type="button", onclick="verbose(false)").
  
negative.code:   //- Nothing for ts.
  
  :marked
    ## Make some changes
    
    ## 做点改变
  
    Try changing the message to "My SECOND Angular 2 app".
  
  