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I'm moving it. On this page it says capitalize all words in titles of publication "except a, an, the, at, by, for, in, of, on, to, up, and, as, but, it, or, and nor.", quoted from here.
However, if you scroll down it says "prepositions that belong to a phrasal verb" should be capitalized. e.g. "back up" or "fired up". Raykyogrou0 (Talk) 10:12, 29 April 2013 (UTC)