• Allowed HTML tags: <a> <em> <strong> <cite> <code> <ul> <ol> <li> <dl> <dt> <dd>
• To highlight piece of code, just surround them with <code type="language"> Your code &tl;/code>>. Language can be java,c++,bash,etc... Everything Geshi support.
• Lines and paragraphs break automatically.
• Textual smileys will be replaced with graphical ones.
• Web page addresses and e-mail addresses turn into links automatically.

More information about formatting options