You are looking at the HTML representation of the XML format.
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>
    <recentchanges>
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      <rc type="edit" ns="0" title="PhysX" rcid="1270" pageid="97" revid="1270" old_revid="1125" timestamp="2020-01-18T11:01:00Z" />
      <rc type="edit" ns="0" title="Boost 빌드" rcid="1269" pageid="83" revid="1269" old_revid="1255" timestamp="2019-12-12T08:10:24Z" />
      <rc type="new" ns="0" title="NSIS" rcid="1268" pageid="313" revid="1268" old_revid="0" timestamp="2019-12-03T05:43:25Z" />
      <rc type="edit" ns="0" title="Study" rcid="1267" pageid="24" revid="1267" old_revid="1256" timestamp="2019-12-03T05:36:52Z" />
      <rc type="edit" ns="0" title="Boost::property tree 를 이용한 json 스크립트 파싱" rcid="1266" pageid="36" revid="1266" old_revid="1264" timestamp="2019-10-09T00:22:15Z" />
      <rc type="edit" ns="0" title="배치 파일 편집" rcid="1265" pageid="63" revid="1265" old_revid="355" timestamp="2019-09-24T02:37:27Z" />
      <rc type="edit" ns="0" title="Boost::property tree 를 이용한 json 스크립트 파싱" rcid="1264" pageid="36" revid="1264" old_revid="1251" timestamp="2019-09-11T05:44:39Z" />
    </recentchanges>
  </query>
  <query-continue>
    <recentchanges rcstart="2019-03-28T04:42:40Z" />
  </query-continue>
</api>