<h1 tal:replace="structure context/manage_page_header">Header</h1>
<h2 tal:define="manage_tabs_message options/manage_tabs_message | nothing"
    tal:replace="structure context/manage_tabs">Tabs</h2>

<h3>Diff of Customized vs. Original Source</h3>

<div tal:define="diffLines python:list(context.getDiff());
                ">
<pre tal:condition="diffLines"
     tal:content="python: '\n'.join(diffLines)">
DIFF GOES HERE
</pre>

<p tal:condition="not: diffLines"><em> No changes. </em></p>

</div>

<h1 tal:replace="structure context/manage_page_footer">Footer</h1>

