Suppose I'm editing an article and my browser crashes. Were my <Preview>s stored anywhere? If so, how can I find them?

Nope, they're only stored in your browser. If you're going to make an edit so extensive that it's likely to take a while a represent considerable effort, then you probably don't want to use the browser form anyway--cut and paste the text into a real editor, then paste it back when you're done.

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