You can see it because you are admin...
I've done this in my development forum http://area17.customphpbb.es/theproject
$lview = in_array($layout_row['view'], array(0,1,2,3,4));
$lview = in_array($layout_row['view'], array(0,2,3,4));
$bview = '(0,1,2,3,4)';
$append = '01234';
$bview = '(0,2,3,4)';
$append = '0234';