(4) These substantial limitations on the functions of depositaries were enshrined as a result of problems that arose with regard to certain reservations; hence, it appears all the more essential to recall these provisions in the Guide to Practice, adapting them to the special case of reservations.
(4) 没有必要拟订关于简单解释性声明形式的准则草案，因为形式问题无关宏旨。 《实践指南》对此保持缄默就足以说明无此必要。