vendor/rails/railties/doc/guides/source/images/icons/README

   1 Replaced the plain DocBook XSL admonition icons with Jimmac's DocBook
   2 icons (http://jimmac.musichall.cz/ikony.php3). I dropped transparency
   3 from the Jimmac icons to get round MS IE and FOP PNG incompatibilies.
   4
   5 Stuart Rackham