**BBCode** <<<creole + [b]bold [u]&[/u] [i]Italic[/i][/b] [img]/favicon.ico[/img] [url=/?foo=bar][img]/favicon.ico[/img][/url] >>> **Simple-HTML** <<<creole + <b>bold <u>&</u> <i>Italic</i></b> <img src="/favicon.ico"> <a href="/?foo=bar"><img src="/favicon.ico"></a> >>> **Bad-HTML** <<<creole + <b onclick="location.href='http://evil.com'"><u>Click me</u></b> <script>alert("Hello World!");</script> >>>