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>
  <sidebar>
    <sidebar>
      <navigation>
        <n-mainpage-description text="Main page" href="/mediawiki/index.php/Main_Page" id="n-mainpage-description" active="" />
      </navigation>
      <CUSTOMER_PANEL>
        <n-OnePath text="OnePath" href="http://docs.pathcom.com/mediawiki/index.php/Onepath_Main_Page" id="n-OnePath" active="" rel="nofollow" />
      </CUSTOMER_PANEL>
      <CLOUD>
        <n-CloudPath:HyperV text="CloudPath:HyperV" href="http://docs.pathcom.com/mediawiki/index.php/CloudPath:_Hyper_V_Main_Page" id="n-CloudPath:HyperV" active="" rel="nofollow" />
        <n-CloudPath:VMware text="CloudPath:VMware" href="http://docs.pathcom.com/mediawiki/index.php/CloudPath:_VMware_Main_Page" id="n-CloudPath:VMware" active="" rel="nofollow" />
      </CLOUD>
      <EMAIL_&_WEB_HOSTING>
        <n-EasyMail text="EasyMail" href="http://docs.pathcom.com/mediawiki/index.php/EasyMail_Main_Page" id="n-EasyMail" active="" rel="nofollow" />
        <n-HostPath text="HostPath" href="http://docs.pathcom.com/mediawiki/index.php/Hostpath_Main_Page" id="n-HostPath" active="" rel="nofollow" />
        <n-MyExchange text="MyExchange" href="http://docs.pathcom.com/mediawiki/index.php/MyExchange_Main_Page" id="n-MyExchange" active="" rel="nofollow" />
        <n-FortiMail text="FortiMail" href="http://docs.pathcom.com/mediawiki/index.php/Fortimail_Main_Page" id="n-FortiMail" active="" rel="nofollow" />
      </EMAIL_&_WEB_HOSTING>
      <STORAGE>
        <n-Storig text="Storig" href="http://docs.pathcom.com/mediawiki/index.php/Storig_Main_Page" id="n-Storig" active="" rel="nofollow" />
      </STORAGE>
      <DESKTOP_&_SERVER_MANAGEMENT>
        <n-MySmartOffice text="MySmartOffice" href="http://docs.pathcom.com/mediawiki/index.php/MySmartOffice_Main_Page" id="n-MySmartOffice" active="" rel="nofollow" />
      </DESKTOP_&_SERVER_MANAGEMENT>
      <REPORTING>
        <n-Operations-Analysis-Report text="Operations Analysis Report" href="http://docs.pathcom.com/mediawiki/index.php/Operations_Analysis_Report_Main_Page" id="n-Operations-Analysis-Report" active="" rel="nofollow" />
      </REPORTING>
      <PHONE_SERVICES>
        <n-SmartReach text="SmartReach" href="http://docs.pathcom.com/mediawiki/index.php/SmartReach_Main_Page" id="n-SmartReach" active="" rel="nofollow" />
      </PHONE_SERVICES>
      <FAQ's>
        <n-Pathway-FAQ.27s text="Pathway FAQ&#039;s" href="http://docs.pathcom.com/mediawiki/index.php/Pathway_FAQs" id="n-Pathway-FAQ.27s" active="" rel="nofollow" />
      </FAQ's>
    </sidebar>
  </sidebar>
</api>