gistfile1.txt

///themes/simple/templates/Includes/Sidebar.ss
Tutorial:
<ul>
  <% loop $Menu(2) %>
    <li class="$LinkingMode">
        <a href="$Link" title="Go to the $Title.XML page">
            <span class="arrow">&rarr;</span>
            <span class="text">$MenuTitle.XML</span>
        </a>
    </li>
  <% end_loop %>
</ul>

SilverStripe-cms-v3.1.5:
<aside class="sidebar unit size1of4">
	<% if $Menu(2) %>
		<nav class="secondary">
			<% with $Level(1) %>
				<h3>
					$MenuTitle
				</h3>
				<ul>
					<% include SidebarMenu %>
				</ul>
			<% end_with %>
		</nav>
	<% end_if %>
</aside>