anchor.diff:    We almost think of them as styles.
     In fact, we'd like to apply them in our HTML templates as we do styles.
   p.
  -  Welcome, Angular pipes, the simple display-value transformations that we can declare in our HTML!
  +  Introducing Angular pipes, a way to write display-value transformations that we can declare in our HTML!
     Try the #[+liveExampleLink2()].
   
   .l-main-section
  
positive.code:   We can chain pipes together in potentially useful combinations.
    In the following example, we chain the birthday to the `DatePipe` and on to the `UpperCasePipe`
    so we can display the birthday in uppercase. The following birthday displays as
    **<samp>APR 15, 1988</samp>**
  
  +makeExample('pipes/ts/app/app.component.html', 'chained-birthday')(format=".")
  
  
negative.code: +makeExample('pipes/ts/app/exponential-strength.pipe.ts', null, 'app/exponential-strength.pipe.ts')(format=".")
  
  :marked
    This pipe definition reveals several key points:
  
    * A pipe is a class decorated with pipe metadata.
  
  