IE8 browser mode vs document mode

Posted by mkoryak on Stack Overflow See other posts from Stack Overflow or by mkoryak
Published on 2010-06-01T14:27:22Z Indexed on 2010/06/01 18:23 UTC
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ie8

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ie8-browser-mode

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ie8-document-mode

Can someone please explain the difference between IE8 browser mode and document mode in simple terms?

What causes the browser mode to change?
What causes the document mode to change?
If a user changes the mode(s) via developer tools, does the change remain even if the page is refreshed?

I am asking this because we are doing some IE8 testing here, and different people have different combinations of the modes, and i want to try to figure out how this is happening.

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