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>
    <logevents lecontinue="20130515111208|638" />
  </query-continue>
  <query>
    <logevents>
      <item logid="648" ns="0" title="V4/FAQ" pageid="150" type="patrol" action="patrol" user="Paulo Santos" timestamp="2013-11-01T17:38:54Z" comment="">
        <patrol cur="638" prev="637" auto="1" />
      </item>
      <item logid="647" ns="0" title="V4/FAQ" pageid="150" type="patrol" action="patrol" user="Paulo Santos" timestamp="2013-07-03T08:47:20Z" comment="">
        <patrol cur="637" prev="636" auto="1" />
      </item>
      <item logid="646" ns="0" title="V4/FAQ" pageid="150" type="patrol" action="patrol" user="Paulo Santos" timestamp="2013-07-03T08:46:59Z" comment="">
        <patrol cur="636" prev="605" auto="1" />
      </item>
      <item logid="645" ns="0" title="Enterprise Web Server/System Requirements" pageid="137" type="patrol" action="patrol" user="Paulo Santos" timestamp="2013-06-27T14:10:43Z" comment="">
        <patrol cur="635" prev="585" auto="1" />
      </item>
      <item logid="644" ns="6" title="File:Comp layout mask.png" pageid="68" type="upload" action="overwrite" user="Paulo Santos" timestamp="2013-05-20T09:31:50Z" comment="" />
      <item logid="643" ns="6" title="File:Comp multimedia html.png" pageid="156" type="upload" action="overwrite" user="Paulo Santos" timestamp="2013-05-16T11:21:49Z" comment="" />
      <item logid="642" ns="0" title="Composer/Modules/Multimedia" pageid="25" type="patrol" action="patrol" user="Paulo Santos" timestamp="2013-05-15T11:27:56Z" comment="">
        <patrol cur="632" prev="631" auto="1" />
      </item>
      <item logid="641" ns="0" title="Composer/Modules/Multimedia" pageid="25" type="patrol" action="patrol" user="Paulo Santos" timestamp="2013-05-15T11:26:55Z" comment="">
        <patrol cur="631" prev="625" auto="1" />
      </item>
      <item logid="640" ns="6" title="File:Comp multimedia html.png" pageid="156" type="upload" action="overwrite" user="Paulo Santos" timestamp="2013-05-15T11:13:53Z" comment="" />
      <item logid="639" ns="6" title="File:Comp multimedia html.png" pageid="156" type="upload" action="upload" user="Paulo Santos" timestamp="2013-05-15T11:12:56Z" comment="" />
    </logevents>
  </query>
</api>