          <p>
                      Temporarily intercept the output generated by <code class="computeroutput"><span class="identifier">a</span></code>, flushing it only after
                      <code class="computeroutput"><span class="identifier">a</span></code> succeeded
                    </p>
                  </td>
</tr>
<tr>
<td>
                    <p>
                      <a class="link" href="../../reference/directive/columns.html" title="Generator Directive Separating Output Into Columns (co