• Web page addresses and e-mail addresses turn into links automatically.
• Allowed HTML tags: <a> <em> <strong> <cite> <code> <ul> <ol> <li> <dl> <dt> <dd><blockquote>
• Lines and paragraphs break automatically.
• Pairs of<blockquote> tags will be styled as a block that indicates a quotation.
• You can enable syntax highlighting of source code with the following tags: <c>, <cpp>, <css>, <drupal5>, <drupal6>, <java>, <javascript>, <mysql>, <php>, <python>, <ruby>, <smarty>, <xml>. The supported tag styles are: <foo>, [foo]. PHP source code can also be enclosed in <?php ... ?> or <% ... %>.
• Textual smileys will be replaced with graphical ones.

More information about formatting options