           succeeds the buffer content is flushed to the underlying output
                      stream, otherwise the buffer content is discarded. The buffer
                      directive succeeds as long as the embedded generator succeeded
                      (unless the underlying output stream reports an error).
                    </p>
                  </td>
</tr></tbody>
</table></div>
<div class="tip"><table border="0" summary="Tip">
<tr>
<td rowspan="2" align="center" valign="top" width="25"><i