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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-continue>
    <alltransclusions gatcontinue="CIS_Modes|1219" />
  </query-continue>
  <query>
    <pages>
      <page pageid="660" ns="0" title="CIS-11" />
      <page pageid="689" ns="0" title="CIS-3000" />
      <page pageid="704" ns="0" title="Russian Diplo VFT PSK 64Bd" />
      <page pageid="938" ns="0" title="CIS-12" />
      <page pageid="943" ns="0" title="CIS-14" />
      <page pageid="948" ns="0" title="CIS-16" />
      <page pageid="1207" ns="0" title="CIS 3xBaudot-50 VFT" />
      <page pageid="1210" ns="0" title="CIS 3x100 VFT" />
      <page pageid="1214" ns="0" title="CIS 3x144 VFT" />
      <page pageid="2066" ns="0" title="CCIR Selcall" />
    </pages>
  </query>
</api>