source: documentViewer/zpt/thumbs_main_rss.zpt

<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<rss version="2.0" 
     xmlns:media="http://search.yahoo.com/mrss"
     xmlns:tal="http://xml.zope.org/namespaces/tal">

<channel tal:define="docinfo options/docinfo; pageinfo options/pageinfo; viewMode options/viewMode; start pageinfo/start; end pageinfo/end; rows pageinfo/rows; cols pageinfo/cols; grpsize pageinfo/groupsize; pages docinfo/numPages">
 
    <item tal:repeat="idx python:range(1,pages)">
      <title tal:content="string:$idx">title</title>
      <link tal:content="structure python:here.getLinkAmp(param='pn',val=idx)">link</link>
    
      <media:thumbnail tal:attributes="url string:${docinfo/imageURL}&amp;pn=$idx&amp;dw=100&amp;dh=100"/>
      <media:content tal:attributes="url string:${docinfo/imageURL}&amp;pn=$idx&amp;dw=800&amp;dh=800"/>

  </item>

</channel>
</rss>