PIE (PYE), pai: The name given to the index-table on which prior to the Reformation in England the directions for worship were written, and to the early ordinal or directory for priests, containing a table of daily services and a summary of the mass rubrics. The arrangement was complicated and obscure, and the investigation required to discover the proper order was sometimes extended. The result was great confusion in the services. The name is perhaps derived from pica, "magpie," and is the result of the "pied" appearance of the book caused by the printing of initials in red and the body in black type on white paper.