silverstripe-docsviewer/templates/Layout/DocumentationViewer_folder.ss

<div id="module-home">
	<div id="left-column">
		<% if Content %>
			$Content
		<% else %>
			<h2>$Title</h2>
		<% end_if %>
	</div>

	<div id="right-column">
		<% include DocInThisModule %>
	</div>
</div>