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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>
<allpages gapcontinue="Автоматизация_управления_системой_электроснабжения_железных_дорог" />
</query-continue>
<query>
<pages>
<page pageid="1256" ns="0" title="Автоблокировка" contentmodel="wikitext" pagelanguage="ru" touched="2011-08-02T06:55:08Z" lastrevid="1743" counter="49816" length="23387" new="" />
<page pageid="1255" ns="0" title="Автоведение поездов" contentmodel="wikitext" pagelanguage="ru" touched="2011-08-02T06:50:58Z" lastrevid="1742" counter="3034" length="4792" new="" />
<page pageid="839" ns="0" title="Автоматизация работы станций" contentmodel="wikitext" pagelanguage="ru" touched="2011-06-22T20:07:32Z" lastrevid="1010" counter="1243" length="1229" new="" />
<page pageid="843" ns="0" title="Автоматизация сортировочных горок" contentmodel="wikitext" pagelanguage="ru" touched="2013-05-24T10:44:39Z" lastrevid="2116" counter="7540" length="8284" />
</pages>
</query>
</api>