일반 게시판
skin - default - header.html
<block cond="!$module_info->duration_new = (int)$module_info->duration_new">{@ $module_info->duration_new = 12 }</block>
dx 게시판
skins - default - ___setting.html
$module_info->duration_new?0:$module_info->duration_new = '12';