Specifies whether the URL should be converted to a site root relative path (/html/images/image1.gif) or an absolute path (http://www.mysite.com/images/image1.gif).
SiteRelative, Absolute, Default
Example
<?php
$rte=new RichTextEditor();
$rte->Text="Type here";
$rte->URLType="SiteRelative";
$rte->ID="Editor1";
$rte->MvcInit();
echo $rte->GetString();
// use $_POST["Editor1"]to retrieve the data
?>