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HTML is good for debugging, but is unsuitable for application use.
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To see the non HTML representation of the XML format, set format=xml.
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<?xml version="1.0"?>
<api>
  <query-continue>
    <pageswithprop gpwpcontinue="2510" />
  </query-continue>
  <query>
    <pages>
      <page pageid="1" ns="0" title="Main Page" contentmodel="wikitext" pagelanguage="en" touched="2020-02-14T21:36:19Z" lastrevid="69763" counter="3316399" length="3659" />
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      <page pageid="1058" ns="0" title="Group Based Policy (GBP)" contentmodel="wikitext" pagelanguage="en" touched="2017-10-23T08:41:27Z" lastrevid="66316" counter="25" length="3596" />
      <page pageid="1186" ns="0" title="Documentation" contentmodel="wikitext" pagelanguage="en" touched="2019-09-26T12:20:04Z" lastrevid="68440" counter="31" length="3560" />
      <page pageid="1529" ns="0" title="Widget:Google Spreadsheet" contentmodel="wikitext" pagelanguage="en" touched="2014-06-20T03:46:51Z" lastrevid="15280" counter="0" length="1195" new="" />
      <page pageid="1648" ns="274" title="Widget:Google Spreadsheet" contentmodel="wikitext" pagelanguage="en" touched="2014-06-30T20:09:24Z" lastrevid="16253" counter="0" length="1138" />
      <page pageid="1649" ns="274" title="Widget:Google Document" contentmodel="wikitext" pagelanguage="en" touched="2014-06-30T20:08:49Z" lastrevid="16252" counter="0" length="1873" />
      <page pageid="2192" ns="2" title="User:Dneary/Main page" contentmodel="wikitext" pagelanguage="en" touched="2016-11-28T15:43:14Z" lastrevid="37103" counter="1" length="2192" />
      <page pageid="2395" ns="0" title="Interns/Guidelines" contentmodel="wikitext" pagelanguage="en" touched="2015-12-14T09:00:40Z" lastrevid="39135" counter="1" length="7379" />
      <page pageid="2509" ns="0" title="Group Policy beta:Main" contentmodel="wikitext" pagelanguage="en" touched="2015-11-05T17:41:51Z" lastrevid="26985" counter="1" length="2913" />
    </pages>
  </query>
</api>