These are the master files. For example, sf2.zip (Street Fighter II: The World Warrior) contains all the program and graphics data. Parents are usually the US or World versions.
: If you want to be able to move individual games around without worrying about shared "parent" files, convert your set to Non-Merged . This makes each fbneo complete romset
Discussions like this thread on building romsets offer deep dives into managing non-arcade systems (like ColecoVision) within FBNeo. These are the master files
