anchor.diff:  
   == Switch theme
   
  -If you decide to modify LESS source files, remember that switching from one theme to another 
  +If you decide to modify LESS source files, remember that switching from one theme to another
   require only to change `theme` variable at line 2 in following file.
   
   .Source file `less/asciidoc-bootstrap.less`
  
positive.code: 
  * If you want to use icons font, don't change anything.
  
  * If you want to use only PNG image files ( with AsciiDoc `icons` attribute ), 
  just remove or comment 20. 
  +
  [source,css]
  ----
  
negative.code: endif::basebackend-docbook[]
  
  [role="lead"]
  Release v4.0.0 included the default Bootstrap theme and four more free themes
  from http://bootswatch.com/[Bootswatch] template provider.
  
  If all those skins does not match your needs, you can either :
  