{% for attfile in files %}
{% if forloop.first %}
<table class="attached_files">
    <caption>slides</caption>
    <thead><tr><th>file</th><th>size</th><th>comment</th></tr></thead>
    <tbody>
{% endif %}
<tr {% if forloop.last %}class='last'{% endif %}><td><a href='{{ attfile.get_file_url }}'>{{ attfile.get_file_short_name|escape }}</a></td>
    <td>{{ attfile.get_file_size|filesizeformat }}</td>
    <td>{{attfile.comment|escape}}</td></td>
{% if forloop.last %}
    </tbody>
</table>
{% endif %}
{% endfor %}