anchor.diff:  
   *Legacy DB element*: No direct correlation 
   
  -*New HTML element*: <canvas>
  +*HTML element*: <canvas>
   
   *Note*: Should include a fallback link.
   
  
positive.code: 
  *Legacy DB element*: <bibliography>
  
  *New HTML element*: <section>
  
  *Special semantics*: +class="bibliography"+ for main bibliography; class="biblioentry" for each biblioentry
  
  
negative.code: 
  *Legacy DB element*: <videoobject>
  
  *HTML element*: <video>
  
  *Note*: Should include a fallback image via the +poster+ attribute and/or a link to the video online.
  
  