anchor.diff:      we generally prefer the [NgClass directive](#ngClass) for managing multiple class names at the same time.
   
   :marked
  -  ### Style binding
  +  ### Style Binding
   
     We can set inline styles with a **style binding**.
   
  
positive.code:   is to set ARIA attributes, as in this example:
  +makeExample('template-syntax/ts/app/app.component.html', 'attrib-binding-aria')(format=".")
  :marked
    ### Class binding
  
    We can add and remove CSS class names from an element’s `class` attribute with
    a **class binding**.
  
negative.code:   the component's `onSave()` method whenever a click occurs:
  +makeExample('template-syntax/ts/app/app.component.html', 'event-binding-1')(format=".")
  :marked
    ### Target Event
    A **name between enclosing parentheses** &mdash; for example, `(click)` &mdash;
    identifies the target event. In the following example, the target is the button’s click event.
  +makeExample('template-syntax/ts/app/app.component.html', 'event-binding-1')(format=".")
  