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-continue>
<allfileusages gafcontinue="Ball-lock.jpg|1139" />
</query-continue>
<query>
<pages>
<page pageid="145" ns="0" title="Восьмитысячник" />
<page pageid="398" ns="0" title="Бахчисарай и Столбы" />
<page pageid="692" ns="0" title="Страховочное устройство" />
<page pageid="807" ns="0" title="Зажим" />
<page pageid="1365" ns="0" title="Ледобур" />
<page pageid="1774" ns="0" title="Байчечекей" />
<page pageid="1782" ns="0" title="Байлян-Баши" />
<page pageid="3200" ns="0" title="Рюкзак" />
<page pageid="4884" ns="0" title="Ухо, 4А, IV+, 230м (Мшатка-Кая)" />
</pages>
</query>
</api>