anchor.diff:  === Multiple Definitions of Bookmarks or ID's
   If any is defined more than once, any anchor linking to it will be confused :-)
   
  +=== Broken External Links
  +*planned*
   
  -=== Broken External Links
   Although external links might suffer from network issues or site maintenance,
   checks are still possible...
   
  +=== Broken ImageMap Links
  +*planned*
   
  -== Development
  -There is a small and largely unpolished
  -link:docs/DevelopmentGuide.adoc[development guide].
  +
  +== Technical Documentation
  +In addition to checking HTML, this project serves as an example for http://arc42.de[arc42]
  +software architecture documentation.
  +
  +//docs/DevelopmentGuide.adoc[development guide].
  +
   
   == Fundamentals
   This tiny piece rests on incredible groundwork:
  
positive.code: 
  
  == About
  This plugin provides some basic sanity checking on html files.
  
  It can be helpful in case of html generated from e.g. {asciidoc-url}[Asciidoctor],
  Markdown or other formats - as converters usually don't check for missing images
  or broken links.
  
  
  == Installation
  
negative.code: TODO: If an anchor XYZ is undefined, the plugin will look for _similar_ definitions
  (using a sophisticated string-similarity algorithm).
  
  
  === Missing Images
  Images, referenced in '<img src="XYZ"...' tags, refer to external files. The existence of
  these files is checked by the plugin.
  