anchor.diff:        .file styles.css
         .file systemjs.config.js
         .file tsconfig.json
  -:marked
  -  To see the file contents, open the <live-example></live-example>.
  -
  -  要查看文件的内容，请打开<live-example>在线例子</live-example>。
  +
  +block project-files
  +  :marked
  +    To see the file contents, open the <live-example></live-example>.
  +
  +    要查看文件的内容，请打开<live-example>在线例子</live-example>。
   
   .l-main-section
   :marked
  
positive.code: 
  .l-main-section#make-changes
  h2 Step !{step++}: Make some live changes
  h2 步骤!{step++}：做一些即时修改
  :marked
    Try changing the message in <span ngio-ex>app/app.component.ts</span> to "Hello Again Angular!".
  
  
negative.code: block includes
    include _util-fns
    - var _Install = 'Install'
    - var _Install_cn = '安装'
    - var _prereq = 'Node.js and npm'
    - var _prereq_cn = 'Node.js和npm'
  