the initial discourse of a theatrical piece, usually in religious theater See Fray Juan Bautista, Confesionario en lengua mexicana y castellana, 1555-ca. 1613, Benson Latin American Collection, published on line with Primeros Libros, http://primeroslibros.org. See also Oscar Armando García, In Pochtecatl, o El Mercader, http://fenix.cichcu.unam.mx/libroe_2006/1022684/06_c02.pdf, consulted June 17, 2012.