HelloWorldController.php

<?php
class HelloWorldController extends Tendoo_Module
{
    public function __construt()
    {
        parent::__construct();
    }
    
    /**
     * Index Method
     * @param void
     * @return void
    **/
    public function index()
    {
        // foo_module is the module namespace and helloworld is the filename
        return $this->module_view( 'foo_module', 'helloworld' );
    }
}