tcm-in-guestrow-tpl/conf/metadata.php

<?php
/*
 * configuration metadata
 *
 */

$meta['tagline']      = array('string');
$meta['discussionNS'] = array('string');
$meta['sidebarID']    = array('string');
$meta['hideTools']    = array('onoff');

// array('multichoice','_choices' => array(0,1,2));