 Further retouches were made by Pope Pius XII in 1955, Pope John XXIII in 1960, and Pope Paul VI in 1969.On ferias and many feast days of simple rank, the celebrant was permitted to substitute a Mass of his own choice such as a votive Mass, or a Mass for the dead.Before the reform of Pope Pius X in 1911, ordinary Doubles took precedence over most of the semidouble Sundays, resulting in many of the Sunday Masses rarely being said.