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Assuming the app has implemented the new saving model correctly, it will also keep a history of every version:

File > Revert To > Browse all versions

Indeed - the OS X model fixes (to some extent) the problem in question, not exacerbates it.

As evident from the comments above, one of OS X's biggest weak points is feature discoverability.

I love how OS X stays out of your way, but most regular users never get to take advantage of greater complexity. You have to be in the mindset of one of 'us' (reading every update to Apple's PR) to get a handle on everything OS X can do.

Hardly, it was well advertised when Lion came out.

Exactly. If you got your first Mac post 10.7 (and you're the average user) you've got no idea you have such a feature.

Maybe you find it one day trolling through the menubar. Maybe you don't.

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