Conditional opt:put, or "add as much instructions as you can".

>>>>templates/test.tpl
The test checks the basic opt:put functionality.

>>>>templates/test.tpl
<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<opt:root>
<opt:put value="$sect.item" opt:section="sect" str:separator=" / "/>
</opt:root>

>>>>expected.txt
OUTPUT

>>>>result.txt
A / B / C / D

>>>>data.php
$view->sect = array(0 =>
	array('item' => 'A'),
	array('item' => 'B'),
	array('item' => 'C'),
	array('item' => 'D')
);