table class="ref-arguments">
    <colgroup><col class="name" /><col class="desc" /></colgroup>
    <tr>
      <th>media_id</th>
      <td><p>numeric; the unique id to identify a post which can be 
found in the <code>id</code>, not the <code>pk</code> field, of posts returned via many of 
the functions retrieving feeds.</p></td>
    </tr>
    <tr>
      <th>max_id</th>
      <td><p>integer; the unique id identifying the oldest post that you 
would want to retrieve in this function call</p></td>
    </tr>
   