Board Thread:General Discussion/@comment-26006155-20200107155350/@comment-32182236-20200121184824

File9 IS an autosave.

Meaning that it's not Frisk's file. It's the actual meta-state of the world. After all, resetting deletes Frisk's file, so Frisk's file must be the one deleted.

This increases the chances that the file names are just random. Frisk's file would only change when SAVED. (So it's File0.)

I guess that's a bust. There's simply no reason why File9 would be slot corresponding to the state of the world. But it is. So it's likely just as non-canon as the name of system_information_962.