anchor.diff:  Here is https://github.com/hakimel/reveal.js#fragments[upstream documentation] on the topic.
   Note that only `fade-in` is supported for lists at the moment.
   
  +=== Syntax highlighting
  +
   [listing]
   ....
   == Slide Five
  
positive.code: 
  // FIXME: incomplete
  
  Let's see some examples of `revealjs` backend features:
  
  ----
  = Title Slide
  
negative.code: Slide Three applies the attribute http://lab.hakim.se/reveal-js/#/14[data-background] to the `reveal.js` <section> tag.
  Anything accepted by CSS color formats works.
  Here is the https://github.com/hakimel/reveal.js#slide-backgrounds[upstream documentation].
  
  === Fragments
  
  ----
  == Slide Four
  