          <dt>
                    <span class="sect2">
                      <a href="enabletxn.html#sharedmemory">Shared Memory Regions</a>
                    </span>
                  </dt>
                  <dt>
                    <span class="sect2">
                      <a href="enabletxn.html#security">Security Considerations</a>
                    </span>
                  </dt>
                </dl>
              </dd>
              <dt>
                <span class="sect1">
                  <a