If that's not it, or if I'm completely off the mark, please provide more context or details, and I'll do my best to help. There's a feature in Windows 10 called 'Previous versions' or 'File History' and 'System Restore' ; Collectively these settings attempt to preserve prior Revisions of your files & system.
The tab on a file's Properties allows a user to restore a previous version of a file. The snapshots used to provide this functionality come from File History (not enabled by default) or System Restore points.
Is any of these, the feature you were thinking of?