anchor.diff:          The `*ngIf` directive in Angular&nbsp;2 works the same as the `ng-if` directive in Angular&nbsp;1,
           it removes or recreates a portion of the DOM based on an expression.
   
  -        Angular 2中的`*ngIf`指令与Angular 1中的`ng-if`指令不同，
  +        Angular 2中的`*ngIf`指令与Angular 1中的`ng-if`指令一样，
           它根据表达式的值移除或重建DOM中的一部分。
   
           In this example, the `table` element is removed from the DOM unless the `movies` array has a length.
  
positive.code: 
          See the heading [Filters / Pipes](#Pipes) below for more information.
  
          请参见标题[过滤器/管道](#Pipes)了解更多信息。
  
    tr(style=top)
      td
  
negative.code:         In Angular&nbsp;2, the template no longer specifies its associated controller.
          Rather, the component specifies its associated template as part of the component class decorator.
  
          在Angular 2中，模板不用再指定它相关的控制器。
          反过来，组件会在组件类的装饰器中指定与它相关的模板。
  
          For more information see [Architecture Overview](../guide/architecture.html#component).
  