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>
  <expandtemplates xml:space="preserve">I love playing in the sand.

==User Functions Testing==
{{#ifanon:You are anonymous.|You are not anonymous.}}

{{#ifblocked:You are blocked.|You are not blocked.}}

{{#ifsysop:You are a sysop.|You are not a sysop.}}
 
Your Username: {{#username:alt}}

Your Email: {{#useremail:alt}}

Your Nickname: {{#nickname:alt}}</expandtemplates>
</api>