One of the thing you want to use as an included template files is mostly 2nd level menu (sidebar menu).

Include files must be in themes/yourtemplatename/templates/Includes folder it’s the same level as Layout folder.

2nd level menu example code u add to themes/yourtemplatename/templates/Includes/Menu2.ss:

<% if Menu(2) %>
    <ul id="Menu2">
        <% control Menu(2) %>
            <li class="$LinkingMode"><a href="$Link" title="Go to the $Title page">$MenuTitle</a></li>
        <% end_control %>
    </ul>
<% end_if %>

And to include the Menu2.ss use in your themes/yourtemplatename/templates/Layout/Page.ss code:

<% include Menu2 %>

Looking for quality SilverStripe Web Hosting? Look no further than Arvixe Web Hosting!