anchor.diff:  | link-target       | Either a location in the current document (identified by ->id), another document (identified by URI)
                           or another resource to view or download.
   | local resource    | local file, either other html files or other filetypes (e.g. pdf, docx)
  +| URI               | Universal Resource Identifier. Defined in http://www.ietf.org/rfc/rfc2396.txt[RFC-2396]
  +                      The ultimate source of truth concerning link syntax and semantic.
  +
   |===
   
   
  
positive.code: [[DuplicateLinkTargets]]
  Duplicate link targets:: Links can have multiple identical link-targets (several id attributes with the same name).
    See <<DuplicateLinkTargetsChecker>>.
  
  [[BrokenExternalLinks]]
  Broken external links:: External links can be broken - due to myriads of reasons: misspelled, link-target currently offline,
  
negative.code: . A user configures the location (directory and filename) of an HTML file,
  . and the corresponding images directory.
  . kbd:[HtmlSC] performs various checks on the HTML and
  . reports its results either on the console or as HTML report.
  
  kbd:[HtmlSC] can run from the command line or as {gradle-url}-plugin.
  
  