The ability to look ahead to the next open is included as a feature because it is often possible to learn approximately where a stock will open based on its pre-open live trading.
For example, if you enter long positions using limit orders and want to skip those entries where the gap down is larger than 5%, you could use NextOpen < 0.95 * C as an EntrySkip formula.
Example
EntrySkip: NextOpen < C * 0.95
Skip entry if the open gaps down more than 5%. NextOpen is known at the time of entry.
