Oh here ya go this is from our own faq.
BBCode is a special implementation of HTML. Whether you can use BBCode is determined by the administrator. You can also disable it on a per post basis from the posting form. BBCode itself is similar in style to HTML: tags are enclosed in square braces [ and ] rather than < and > and it offers greater control over what and how something is displayed. For more information on BBCode see the guide which can be accessed from the posting page.
I guess its just BBCode, I always called it bbc code, but ya thats a little bit of fact on it anyways.