                  </ul>
                            </li>
                            <li>the lower panel
                                <ul>
                                    <li><a href="bracket_notation_panel.html">the bracket notation panel</a></li>
                                    <li><a href="db_panel.html">the database panel</a></li>
                                    <li><a href="charts_panel.html">the charts panel </a><i>(to come)</i></li>
                                    <li><a href="doc