title: ePUB 3.0 File Structure
body: <p>If an ePUB 2.0 is like this:</p>
  
  <pre><code>folder/
      META-INF/
          container.xml
      mimetype
      OEBPS/
          content.opf
          toc.ncx
          [etc]
  </code></pre>
  
  <p>Then is there any difference between what is shown above in ePUB 3.0, or is the structure the same as 2.0? IDPF has doumented 3.0 decently well, but they do not explicitly state this obvious question. IBM has an excellent "ePUB from Scratch" for 2.0, but the current 3.0 tutorial is unhelpful.</p>