If that is too much, you can request a subset of the chain using its window capabilities. The SFC Chain objects handle all of the dynamic aspects of chains. Your applications can register for notification when the chain resizes and when the state of items in the chain change. The chain objects also handle items that move around in the chain, which happens for lists such as the top 25 percentage gainers. The SFC allows your applications to access real-time page data.
Pages are market data organized by row and column.
Your application can register for interest in page level events such as image notifications, update notifications, region updates, and renames. The page model handles both ANSI pages and logicized pages that contain embedded attributes. Applications written with these objects can work seamlessly on any of the market data systems. You can use the SFC time-series objects to get a historical record of market activity. The SFC time-series objects allow you to request historical data by number of samples, by start date and number of samples, or by start date and end date.