Altar linens serve distinct liturgical functions: Fair Linen covers the altar, Corporal holds vessels, Pall a square linen stiffened with either cardboard or plexiglass. Purificator a small square linen used to wipe the communion vessels during the sacrament, Lavabo Towel dries hands, Credence Cloth covers a side table, Chalice Veil conceals post-communion, Cere Cloth protects from dampness, Dust Cloth safeguards Fair Linen, and Sick Call Set facilitates individual communion.