Knowing where you encountered this name or what software/game you were looking for would help me give you a much more specific answer.

: Revisit the website or email where you found the link. Look for a "Readme" file or a description section on the download page that explains the versioning (e.g., what "EADO" stands for).

: Sometimes these strings are generated by specific backup tools or automated export scripts. How to handle this file safely