 The College of the Abbreviators of the greater presidency having been suppressed and the Abbreviators of the lesser presidency having become extinct in fact, the Apostolic Prothonotaries in actual office were appointed to sign the bulls.The mode of dating Papal bulls was also changed.Formerly they were dated according to the year of the Incarnation, which year begins on 25 March, the Solemnity of the Annunciation, which liturgically celebrates the Conception of Jesus Christ.