anchor.diff:  +makeExample('template-syntax/ts/app/app.component.html', 'safe-1')(format=".")
   :marked
     The view still renders but the displayed value is blank; we see only "The title is" with nothing after it.
  -  That is reasonable a behavior. At least the app doesn't crash.
  -
  -  Suppose the template expression involves a property path, as seen in this next example
  -  where we’re displaying the `firstName` of a null hero:
  +  That is reasonable behavior. At least the app doesn't crash.
  +
  +  Suppose the template expression involves a property path, as in this next example
  +  where we’re displaying the `firstName` of a null hero.
   
   code-example(language="html").
     The null hero's name is {{nullHero.firstName}}
  
positive.code:   We can chain expressions through multiple pipes:
  +makeExample('template-syntax/ts/app/app.component.html', 'pipes-2')(format=".")
  :marked
    We can also [apply parameters](./pipes.html#parameterizing-a-pipe) to a pipe:
  +makeExample('template-syntax/ts/app/app.component.html', 'pipes-3')(format=".")
  
  block json-pipe
  
negative.code:     The `json` pipe is particularly helpful for debugging our bindings:
    +makeExample('template-syntax/ts/app/app.component.html', 'pipes-json')(format=".")
    :marked
      The generated output would look something like this
    code-example(language="json").
      { "firstName": "Hercules", "lastName": "Son of Zeus",
        "birthdate": "1970-02-25T08:00:00.000Z",
  