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      <base href="https://bugs.webkit.org/" />
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Feature request: add &quot;subdocument&quot; resource type for content blockers"
   href="https://bugs.webkit.org/show_bug.cgi?id=153559">153559</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Feature request: add &quot;subdocument&quot; resource type for content blockers
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>WebKit
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>WebKit Nightly Build
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>Normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P2
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>WebKit Misc.
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>webkit-unassigned&#64;lists.webkit.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>am&#64;adguard.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Currently there is no way to distinguish frames from top windows.
Meanwhile this can be really useful for ad blocking.

Please read this github issue comments to find out why it may be useful:
<a href="https://github.com/AdguardTeam/AdguardBrowserExtension/issues/145">https://github.com/AdguardTeam/AdguardBrowserExtension/issues/145</a></pre>
        </div>
      </p>
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