title: HTML5 Cache (Manifest) Network Section
body: <p>i am wondering whats the use of the network section of the HTML5 Cache Manifest? </p>
  
  <p>from <a href="https://developer.mozilla.org/en/offline_resources_in_firefox#section_9" rel="nofollow noreferrer">offline resource in firefox</a></p>
  
  <blockquote>
    <p>The online whitelist may contain zero
    or more URIs of resources that the web
    application will need to access off
    the server rather than the offline
    cache. This lets the browser's
    security model protect the user from
    potential security breaches by
    limiting access only to approved
    resources</p>
  </blockquote>
  
  <p>i wonder why is this required. won't files not listed in the explicit section of the cache manifest not be cached anyway? </p>