anchor.diff:  === Ambigous Map-Name
   A map-name exists more than once.
   
  +////
  +TODO: create an image for this case
  +////
  +
   ++++
   <img src=".images/imageMap_1.jpg" alt="jpg1" usemap="#dupe">
   <map name="dupe">
  
positive.code: 	<area shape=rect coords="0,10,0,10" href="#sample2">
  </map>
  ++++
  
  [source,html]
  .duplicate map name 
  
negative.code:  
  
  === Empty Map
  No area-tag defined for an imageMap. That's the equivalent to
  having just the image - but why did we introduce the map-construct?
  
  
  [source,html]
  .empty map 
  ----
  <map name="empty">
  
  </map>
  ----
  
  
  === Broken Link in ImageMap
  A link (href) within an area-tag is broken
  