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Typo. "one an a half hours" => "one and a half hours"Thu, 19 Apr 2012 20:49:59 -0700, by riceissa
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Add the section movement chapters.Sun, 08 Apr 2012 15:34:54 -0400, by Steve Losh
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Fix a help tag.Wed, 04 Apr 2012 13:50:41 -0400, by Steve Losh
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Merge.Wed, 04 Apr 2012 13:48:45 -0400, by Steve Losh