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>
  <warnings>
    <parse xml:space="preserve">No 'title' or 'contentmodel' was given, assuming wikitext.</parse>
  </warnings>
  <parse title="API" displaytitle="API">
    <text xml:space="preserve">&lt;p&gt;I love playing in the sand.
&lt;/p&gt;
&lt;h2&gt;&lt;span class=&quot;mw-headline&quot; id=&quot;User_Functions_Testing&quot;&gt;User Functions Testing&lt;/span&gt;&lt;span class=&quot;mw-editsection&quot;&gt;&lt;span class=&quot;mw-editsection-bracket&quot;&gt;[&lt;/span&gt;&lt;a href=&quot;/index.php?title=RoboWiki:Sandbox&amp;amp;action=edit&amp;amp;section=T-1&quot; title=&quot;RoboWiki:Sandbox&quot;&gt;edit&lt;/a&gt;&lt;span class=&quot;mw-editsection-bracket&quot;&gt;]&lt;/span&gt;&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;{{#ifanon:You are anonymous.|You are not anonymous.}}
&lt;/p&gt;&lt;p&gt;{{#ifblocked:You are blocked.|You are not blocked.}}
&lt;/p&gt;&lt;p&gt;{{#ifsysop:You are a sysop.|You are not a sysop.}}
&lt;/p&gt;&lt;p&gt;Your Username: {{#username:alt}}
&lt;/p&gt;&lt;p&gt;Your Email: {{#useremail:alt}}
&lt;/p&gt;&lt;p&gt;Your Nickname: {{#nickname:alt}}
&lt;/p&gt;
&lt;!-- 
NewPP limit report
CPU time usage: 0.023 seconds
Real time usage: 0.036 seconds
Preprocessor visited node count: 10/1000000
Preprocessor generated node count: 55/1000000
Post‐expand include size: 348/2097152 bytes
Template argument size: 0/2097152 bytes
Highest expansion depth: 2/40
Expensive parser function count: 0/100
--&gt;
</text>
    <langlinks />
    <categories />
    <links />
    <templates>
      <tl ns="4" exists="" xml:space="preserve">RoboWiki:Sandbox</tl>
    </templates>
    <images />
    <externallinks />
    <sections>
      <s toclevel="1" level="2" line="User Functions Testing" number="1" index="T-1" fromtitle="RoboWiki:Sandbox" byteoffset="" anchor="User_Functions_Testing" />
    </sections>
    <iwlinks />
    <properties />
  </parse>
</api>