Make it possible for combined EOD/Intraday data - it allows to operate with database that has a combination of intraday and EOD data in one data file. If This is often turned on then in intraday modes EOD bars are taken off on-the-fly As well as in daily mode https://datafeedforamibroker97529.angelinsblog.com/28617071/detailed-notes-on-amibroker-data