You can find the structure of HTML it in: JOOMLA_ROOT/libraries/joomla/document/html/renderer/message.php View the full link here.

There seems to be some confusion surrounding this subject, so I decided to do some research and post my results in the forums in an attempt to eliminate (or at least remove much of) the confusion.

Some 2.7 percent of the Web now runs on Joomla, according to research firm W3Techs, which translates into a market share of roughly 10 percent. WordPress is currently the market leader, running almost 15 percent of all websites, while Drupal comes in third with 1.7 percent of the Web. Though Joomla is the relative newcomer among these three leaders, it […]