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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.
See the complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query-continue>
    <allredirects garcontinue="Publications|235" />
  </query-continue>
  <query>
    <pages>
      <page pageid="714" ns="100" title="Private:Software" />
      <page pageid="774" ns="0" title="Material:Poster for Core Facilities day at the CRG" />
      <page pageid="1162" ns="0" title="Material:Lab Service Wiki: a wiki-based data management solution for laboratories production services" />
      <page pageid="1164" ns="0" title="Material:Extracting biological meaning from large gene list with DAVID" />
      <page pageid="1166" ns="0" title="Material:Presentation for 2011 Core Facilities day at the PRBB" />
      <page pageid="1167" ns="0" title="Material:Poster for 2011 Core Facilities day at the PRBB" />
      <page pageid="1258" ns="100" title="Private:CLCgenomics vs Genomatix" />
      <page pageid="1305" ns="0" title="Poster in the CF presentation day" />
      <page pageid="1311" ns="0" title="Ucsc sps list" />
      <page pageid="1817" ns="0" title="Hi-Cpipe" />
    </pages>
  </query>
</api>