you could od things like set the pos value to something over 500 and then use
Code:
{* $Id: pages_menu.tpl,v 1.4 2004/06/24 09:53:29 max Exp $ *}
{section name=pg loop=$pages_menu}
{if $pages_menu[pg].pos lt 500}
{$pages_menu[pg].title}
{/if}
{/section}