anchor.diff:  // #docregion property-binding-7
   :marked
     ### Binding target
  -  A name between enclosing square brackets identifies the target property. The target property in the following code is the image element’s `src` property.
  +  a id between enclosing square brackets identifies the target property. The target property in the following code is the image element’s `src` property.
   
   // #enddocregion property-binding-7
   +makeExample('template-syntax/ts/app/app.component.html', 'property-binding-1')(format=".")
  
positive.code: // #docregion directives-1
  .l-main-section
  :marked
    <a name="directives"></a>
    ## Built-in directives
  
    Earlier versions of Angular included over seventy built-in directives.
  
negative.code: // #docregion ngModel-1
  .l-main-section
  :marked
    <a id="ngModel"></a>
    ## Two-way binding with NgModel
    When developing data entry forms, we often want to both display a data property and update that property when the user makes changes.
  
  