title: 'reload' vs 'reloadFromOrigin' in WKWebView
body: <p>What's the difference between <code>reload</code> and <code>reloadFromOrigin</code> in <a href="https://developer.apple.com/library/prerelease/ios/documentation/WebKit/Reference/WKWebView_Ref/index.html#//apple_ref/occ/cl/WKWebView" rel="noreferrer">WKWebView</a>? Apple's documentation says that <code>reloadFromOrigin</code>:</p>
  
  <blockquote>
    <p>Reloads the current page, performing end-to-end revalidation using
    cache-validating conditionals if possible.</p>
  </blockquote>
  
  <p>But I am not sure what that really means.</p>