Yes, I was referring to the file version history. Sorry I couldn’t recall if it was introduced in Leopard or Snow Leopard. I totally agree with the comment fro

Yes, I was referring to the file version history. Sorry I couldn’t recall if it was introduced in Leopard or Snow Leopard. I totally agree with the comment from dreamcompiler, the file history feature is a great idea but the execution needs a lot of improvement. The main issue to me is not the change to Save as.. behavior. To me the problem is that most of the apps didn’t adopted it. In particular cross platform apps ignore it. So you never get used to the behavior change. The version history UI, is also too “heavy”. It has a slider to go back in time, but surrounded by a faux app window simulating traveling in time with your app state... sounds cool but is distracting and not so useful to find differences. And yes, it works with iCloud, but only in apps that use auto save APIs: https://developer.apple.com/design/human-interface-guidelines/macos/system-capabilities/auto-save/ https://developer.apple.com/design/human-interface-guideline...