管理员可以在后台发布公告，并且设置公告显示的条件，比如所有人可见的公告，登陆用户可见的公告，未登陆用户可见的公告等等。并且可以设置多少天后关闭公告弹出
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$CouponsLimitation of use：Expired and UnavailableLimitation of use：
before
Limitation of use：Permanently validCoupon ID：×Available for the following products： Available for the following products categories： Unrestricted use：Available for all products and product types