title: In iPhone OS, what UTI represents a plain ol' text file?
body: <p>I'm attempting to make use of the <a href="http://developer.apple.com/iphone/library/documentation/UIKit/Reference/UIDocumentInteractionController_class/Reference/Reference.html#//apple_ref/occ/instp/UIDocumentInteractionController/UTI" rel="nofollow noreferrer">UIDocumentInteractionController</a> mechanism in iPhone OS 3.2, but I'm struggling to figure out exactly how to construct a <a href="http://developer.apple.com/macosx/uniformtypeidentifiers.html" rel="nofollow noreferrer">UTI</a> that it likes.</p>
  
  <p>I've gotten as far as attempting to set <code>public.plain-text</code>, but it's hard to test whether this is the correct UTI for a plain text document, since I can't tell whether the issue is that my iPad doesn't have any apps that support plain text import. (I figured Pages would, but I suppose perhaps not, since it will attempt and fail to load any files with the extension <code>.pages</code>, regardless of UTI).</p>
  
  <p>Any seasoned OS X developers that can help on this?</p>