All margins and contract specifications are subject to change without notice. All margins are SPAN minimums except some spreads and delivery months which may be higher. Vision, LP., or Excel Futures reserves the right to change margins at any time. The information contained herein is provided as a courtesy and Vision , LP., Excel Futures or its agents assume no liability for its accuracy. The information contained herein is believed to be reliable, but is not guaranteed as to its accuracy or completeness. Neither the information printed nor any opinion expressed constitutes a representation or a solicitation by Excel Futures, Inc. of the purchase or sale of any commodity futures or options of any kind. Those using the information herein for trading purposes are responsible for their own actions.