Some of us have Command-S wired into our hands. Whenever we write a few words or enter a couple of cells into a spreadsheet, our hands twitch and we compulsively type a Command-S to save a document, just in case A new feature of OS X Lion is Auto Save, which is going to stop a lot of Mac users from doing the Command-S twitch. Versions is another related feature that keeps copies of different versions of your documents for posterity.
Auto Save takes a snapshot of whatever you happen to have open on the screen in an app at any particular time, and saves it for you. Let's say that you have TextEdit open with three different documents, all scattered about on your 27" display. None of the documents have been saved, and you suddenly realize that you need to leave for a meetin
