 From 1986 to 1992 he presided over the drafting committee that wrote the Catechism of the Catholic Church, along with José Manuel Estepa Llaurens, William Joseph Levada and Estanislao Esteban Karlic with Christoph Schönborn, O.P.serving as the secretary of the group.Many saw in a contrasting light Ratzinger's planning and overseeing of the opening of the long-sealed Inquisition archives, making available at the beginning of 1998 all materials up to the 1903 death of Pope Leo XIII.