The sandbox is a free range editor you can test out your ideas, thoughts, or formatting in in order to learn how to format it correctly. No information here is "official" wiki information, please, just use this to figure out how you want it before you create a page. Remember, you can make a mess of the sand, but it is just as easily cleaned up!
Feel free to mess with the formatting, styles, headers, etc. Remember, this is here to help you learn.