notes for Menu structur with merged primary & seconday menu in silverstripe:
<nav class="primary"> <span class="nav-open-button">²</span> <ul> <% loop Menu(1) %> <li class="$LinkingMode"><a href="$Link" title="$Title.XML">$MenuTitle</a> <div class="sec"> <% if Children(1) %> <ul> <% loop Children(1) %> <li><a href="$Link" title="$Title.XML">$MenuTitle</a> <% if Children(2) %> <ul> <% loop Children(2) %> <li class="$LinkingMode"><a href="$Link" title="$Title.XML" class="dir">$MenuTitle</a> <% if Children(3) %> <ul> <% loop Children(3) %> <li class="$LinkingMode"><a href="$Link" title="$Title.XML" class="dir">$MenuTitle</a> </li> <% end_loop %> </ul> <% end_if %> </li> <% end_loop %> </ul> <% end_if %> </li> <% end_loop %> </ul> <% end_if %> </div> </li> <% end_loop %> </ul> </nav>