{extend name="iframe" /} {block name="body"}
{foreach name="rule_data" item="v1"} {/foreach}
{foreach name="v1['_data']" item="v2"}
{notempty name="v2['_data']"} {volist name="v2['_data']" id="v3"} {notempty name="v3['_data']"}
{volist name="v3['_data']" id="v4"} {/volist}
{else/} {/notempty} {/volist} {/notempty}
{/foreach}
{/block} {block name="js"} {/block}