anchor.diff:  AsciiDoc specific styling is based on Dan Allen's Asciidoctor SASS style sheets 
   https://github.com/asciidoctor/asciidoctor-stylesheet-factory[].
   
  -Rather than using Bootswatch theme, you may also create your own theme by providing your own +variables.less+ file. 
  +Rather than using Bootswatch themes, you may also create a custom theme by providing your own +variables.less+ file. 
   A good online resource for creating your own style is
   
   http://pikock.github.io/bootstrap-magic/index.html[]
   
  -You may save your +variables.less+ directly from the site.
  +You may conveniently save your +variables.less+ directly from the site.
   
   == Prerequisites
   
  
positive.code:   * http://www.lesscss.org/[Less]
    * http://asciidoctor.org[Asciidoctor]
  
  NOTE: Make sure that the Ruby gems 'tilt' and 'coderay' are installed.
  
  == Setup
  
  
negative.code: 
  Rather than using 'asciidoctor', you may also use Stuart Rackham's http://www.asciidoc.org[asciidoc] instead:
   
   asciidoc -a stylesheet="`pwd`/css/bootstrap_flatly.css" thedocument.adoc
   
  NOTE: +asciidoc+ (unlike +asciidoctor+) requires an absolute path to the stylesheet, if the stylesheet is
  not globally installed.
   
  Unless you specify the +linkcss+ attribute, the stylesheet is directly embedded into the generated document.
  The reference to the stylesheet refers to its location on the file system at *compile time* of the document.
  
  For including just a reference to the stylesheet, use:
  