When booting, RetroFE checks whether meta.db exists. If it does not, it parses all XML files in the meta/hyperlists directory based on the supported fields, ignores all unsupported fields, and puts the information in the meta.db database. The games are listed under name that matches the XML file name. RetroFE matches that information with a collection either by name of the collection or by the metadata.type setting in the collection's settings.conf file if it exists. As an example:
The information in meta/hyperlists/Nintendo Entertainment System.xml will be put in the database under the collection Nintendo Entertainment System. If a collection is named Nintendo Entertainment System (without metadata.type set to something else) or a collection has metadata.type = Nintendo Entertainment System in the settings.conf file, RetroFE will pull the information from that part of the database by matching the filename of the rom to the database entry.