A batch file is a text file containing one or more commands: report generation, data import or other action. Batch files are useful if you need to import data out of business hours, or to generate and publish pre-defined reports automatically. The batch file extension is .prb.
A Promodag Reports options file is a text file containing options for a custom report. Report options files contain a whole set of options for a given report, e.g. date, server, sorting order... The report option file extension is .pro.
For the default location of option files (.pro), see: Default paths for installation and settings.