By Pope Paul VI's "motu proprio" "Ministeria quaedam" of 15 August 1972, the term "minor orders" has been replaced by that of "ministries". Two of what were called minor orders, those of reader and acolyte, are kept throughout the Latin Church, and national episcopal conferences are free to use the term "subdeacon" in place of that of "acolyte". The motu proprio specified the functions of each of these two ministries, A prescribed interval, as decided by the Holy See and the national episcopal conference, is to be observed between receiving them. Candidates for diaconate and for the priesthood must receive both ministries and exercise them for some time before receiving holy orders.