anchor.diff:  .l-main-section
   :marked
     ## Add Custom CSS for Visual Feedback
  +  
     ## 添加自定义CSS以提供视觉反馈
   
     The *NgControl* directive doesn't just track state. 
  
positive.code:     as we do in this re-write of the "Name" `<input>` binding:
      
      事实上，我们可以把`NgModel`绑定拆成两个独立的绑定，就像我们重写的“姓名”`<input>`绑定一样：
    +makeExample('forms/ts/app/hero-form.component.html', 'ngModel-3','app/hero-form.component.html (节选)')(format=".")
  
    :marked
  
negative.code:   If we ran the app right now and changed every Hero model property, the form might display like this:
    
    如果现在我们运行本应用，并且修改Hero模型的每一个属性，表单看起来像这样：
    
  figure.image-display
    img(src="/resources/images/devguide/forms/ng-model-in-action-2.png" width="400px" alt="ngModel in super action")
  :marked
  