Hey River try this. It can be really helpful. <a href="http://www.trading-glossary.com/n0021.asp" rel="nofollow" target="_blank">http://www.trading-glossary.com/n0021.asp</a> This one is not so helpful LOL <a href="http://www.knight.com/" rel="nofollow" target="_blank">http://www.knight.com/</a>