<@40.is_function> <@local(h)> <$h = validator(begin_hash, argv#0)> node = 表示開始ノード node:filter0 = normalize tag = 表示開始タグ tag:filter0 = normalize depth = 深さ depth:type = int depth:min = 1 depth:max = 4 art_pkey = リスト記事 art_pkey:type = int art_pkey:min = 0 <$end> <$ifset(!h.art_pkey, h.art_pkey, undef)> <$ifbreak(form_error())> <$return(h)>