The Triodion contains the Propers of Great Lent for the Presanctified Liturgy, the Divine Liturgy of St. Basil, and for Vespers, Sixth, and Orthros. Published as a four-volume set, Volume 4 contains the fifth and sixth weeks including the Great Canon of St. Andrew, Lazarus Saturday, and Palm Sunday. The editions are spiral-bound — designed to lay flat for easy use on cantor’s stands.