anchor.diff:    ## 编译和运行
     
     Open a terminal window and enter this command:
  +  
     打开terminal（终端）窗口，并且敲如下命令：
   code-example(format="").
     npm start
  
positive.code:     * `npm run lite` - 运行 <a href="https://www.npmjs.com/package/lite-server" target="_blank">轻量级服务器</a>,
      一个轻量级的静态文件服务器，由
      <a href="http://johnpapa.net/" target="_blank">John Papa</a>
      编写和维护，对使用了路由的Angular应用提供了很好的支持。
  
      * `npm run typings` - runs the [*typings* tool](#typings)
      
  
negative.code:   The following steps establish a development environment for the documentation samples
    that also can be the foundation for our real world applications. At a high level, we will
    
    当然，如果只是想在plunker中跑起来，我们不需要构建这些应用。
    下列步骤是用来指引你为文档中的这些例子建立开发环境的，它同样也能作为将来我们开发真实应用的基础。大体来说，我们将：
  
    - set up the [development environment](#devenv)
    - 安装 [开发环境](#devenv)
    - write the app's Angular [root component](#component)
    - 写本应用的Angular[根组件](#component)
    - write [main.ts](#main) which tells Angular to display the root component
    - 写一个 [main.ts](#main)，它将告诉Angular如何显示根组件
    - write the [host web page](#index) (`index.html`)
    - 写一个[宿主页面](#index)(`index.html`)
  
  .l-sub-section
    :marked
      We'll see many code blocks as we pursue this agenda. They're all easy to copy and paste:
      
      在此日程中，我们将会看到很多代码块。它们都很容易拷贝和粘贴：
    code-example(format='.', language='html').
      Click the glyph on the right to copy code snippets to the clipboard  ⇨⇨⇨⇨⇨⇨⇨⇨⇨⇨
      
      点击右边的图标来把代码片段拷贝到剪贴板 ⇨⇨⇨⇨⇨⇨⇨⇨⇨⇨
  
  button(class="verbose off md-primary md-button md-ink-ripple", type="button", onclick="verbose(false)").
  