How does undo/redo basically work on iPhone OS?

Posted by mystify on Stack Overflow See other posts from Stack Overflow or by mystify
Published on 2010-03-15T17:52:36Z Indexed on 2010/03/15 17:59 UTC
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My app doesn't use Core Data yet. Is it true that I must use Core Data for undo/redo?

And: How does the user do the undo/redo? I've never seen it in action, and never ever used it. Don't know how I should do it if I wanted to. There's no undo/redo button anywhere. Yet they say it has undo/redo. So how does the user trigger this?

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