<{if $block.query}> <{$block.query_condition}> <{foreach item=tag_detail from=$block.tag_condition.detail}> sub <{$tag_detail.string}>
<{/foreach}> <{/if}>
<{foreach item=reltag from=$block.reltags}>
<{if $block.query}> add <{/if}> <{$reltag.tag}>
<{/foreach}>