Greetings! This is my first post, so I'll give you a bit of background. I'm an options trader, typically working on a swing trade/position trade sort of time frame. (I typically hold trades 1-3 weeks.) I have been thinking of switching to TradeStation/OptionStation because I would dearly love to have full programmatic control over a) scanning for options positions b) backtesting option trading strategies TradeStation tries very hard to make you believe that they have such capabilities; see, for example, http://www.tradestation.com/optionstationSuite/OptionStationSuite_overview.shtm (notably the sublinks for "Option Chain Analysis" and "Position Analysis") They claim to have hundreds of built-in indicators, such as "Put Call Ratio," "Percent to Double," etc., all of which are written in EasyLanguage and thus presumably modifiable for my own nefarious purposes. All this is fine and dandy, and exactly the sort of thing I'm looking for, EXCEPT for one big pile of caveats: Their "Easy Language Getting Started Guide" and "Easy Language Reference Guide" (both available as downloadable PDFs on their Web site) do NOT document these features! Indeed, these documents have not been updated since 2002, and only concern TradeStation version 6.0, not 8.1. And even some of the functions that were mentioned back in 2002 have not yet been documented, let alone all the new functionality added for OptionStation. Worst of all, while the existing documentation is well written, there is not a single example - in these documents or anywhere else on their Web site that I could find - of how to backtest an option strategy. Here is pseudocode for a (relatively simple) entry rule of the type of strategy I would like to backtest: if Close CrossesAbove (50-day SMA) then Buy 10 calls one strike InTheMoney with at least 60 and no more than 90 days to expiration end Can anyone with OptionStation experience confirm whether a) the EasyLanguage functions that support OptionStation have actually been documented anywhere? b) it is actually possible to backtest option strategies, and if so, please point me to a published example, either on their own Web site or perhaps in one of the trading magazines? Unfortunately, the people at TradeStation I have corresponded with are sales bozos who clearly don't know their own product very well (or maybe they DO know and just don't want to admit flat out that they haven't updated their documenation in FOUR YEARS!!). So I would be grateful for advice from someone with more knowledge in this area. And if there is any other package out there that can actually backtest _option_ strategies, I'd love to hear about it too (along with an explanation of where it expects to get its options data feed). Thank you kindly for your help!