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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>
    <pages>
      <page pageid="1368" ns="0" title="Coordinative Learning" contentmodel="wikitext" pagelanguage="en" touched="2011-08-31T15:35:55Z" lastrevid="12180" counter="562721" length="14035" />
      <page pageid="1808" ns="0" title="Instructional Principles and Hypotheses" contentmodel="wikitext" pagelanguage="en" touched="2012-01-13T16:15:37Z" lastrevid="12258" counter="436335" length="12283" />
      <page pageid="1369" ns="0" title="Interactive Communication" contentmodel="wikitext" pagelanguage="en" touched="2011-09-08T12:48:49Z" lastrevid="12260" counter="353941" length="9557" />
      <page pageid="1704" ns="0" title="Macro-level framework" contentmodel="wikitext" pagelanguage="en" touched="2007-04-13T02:27:22Z" lastrevid="4752" counter="21872" length="4183" />
      <page pageid="2293" ns="0" title="Project Page Template and Creation Instructions" contentmodel="wikitext" pagelanguage="en" touched="2011-03-11T13:31:58Z" lastrevid="11809" counter="136130" length="7113" />
      <page pageid="1370" ns="0" title="Refinement and Fluency" contentmodel="wikitext" pagelanguage="en" touched="2010-02-02T01:50:48Z" lastrevid="10531" counter="488273" length="13401" />
      <page pageid="1367" ns="0" title="Root node" contentmodel="wikitext" pagelanguage="en" touched="2009-10-13T15:05:43Z" lastrevid="9938" counter="198348" length="3261" />
      <page pageid="2158" ns="0" title="Toothbrush Problem" contentmodel="wikitext" pagelanguage="en" touched="2009-05-03T17:19:48Z" lastrevid="9073" counter="11533" length="424" new="" />
    </pages>
  </query>
</api>