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HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
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<?xml version="1.0"?>
<api>
  <query>
    <random>
      <page id="1292" ns="0" title="11. The Battle Over the Institutional Ecology of the Digital Environment" />
      <page id="1348" ns="0" title="Chapter 9, section 6" />
    </random>
  </query>
</api>