host_danube/danube/page/default_introduction/default_introduction.php

<?php

class default_introduction extends SYSTEM\PAGE\Page {
    public function html(){
        $vars = array();                 
        
        $vars = array_merge($vars, \SYSTEM\PAGE\text::tag('danube'));        
        
        return SYSTEM\PAGE\replace::replaceFile(\SYSTEM\SERVERPATH(new PPAGE(),'default_introduction/introduction.tpl'), $vars);
    }
}