anchor.diff:  endif::basebackend-docbook[]
   
   [role="lead"]
  -Release v4.0.0 included the default Bootstrap theme and four more free themes  
  +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 :
  
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: //@import "font-awesome/font-awesome.less";
  ----
  
  CAUTION: Be careful, that admonition block used Font-Awesome by default (see file +asciidoc/admonition-iconsfont.less+ )
  
  == Icons font support by Ionicons
  
  If you don't want to use http://ionicons.com/[Ionicons],
  just remove or comment line 13.
  