In 2021, Pope Francis caused controversy with his motu proprio, Traditionis Custodes, which severely restricted the celebration of Holy Mass in the Tridentine rite. Recently, on February 21, 2023, the Holy Father published a rescript to clarify some points that had caused difficulties in the application of the motu proprio. In this video, Msgr. Markus Graulich SDB, Undersecretary of the Dicastery for Legislative Texts, explains the new developments and sheds light on the background of Traditionis Custodes, including the concerns of Pope Francis about the celebration of the extraordinary form and its relation to the Second Vatican Council.