"These offer directions, suggestions and materials for improving liturgical celebrations and participation in them. They cover the major aspects of the liturgy: liturgical seasons, the sacraments, ministries, etc. They are prepared at the Centro de Pastoral Liturgica, with contributions by a variety of authors. Also works by a single author. Most Dossiers have had multiple printings. Guides and materials for the celebration of Lent. Its theological-pastoral meaning. The Eucharist during Lent. The Liturgy of the Hours. Other celebrations.