>
<td>
                  <p>
                    <a class="link" href="../basic_raw_socket/at_mark.html" title="basic_raw_socket::at_mark"><span class="bold"><strong>at_mark</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    Determine whether the socket is at the out-of-band data mark.
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <a class="link" href="../basic_raw_socket/available.html" tit