Including vB templates internal and external

[Otikeu]

well, actually I was tring that fetch code, and it does fetch the template, but the stuff under that php code doesn't show. I use that php command between <td>'s in my index.php. Variables and templates show, just not the code contents after the php code of index.php. I used this to get it:

PHP Code:

<?php
     eval('print_output("' . fetch_template('usernav') . '");');
?>

Also, how do I include vB template coding within a vB template?