Processions often take place before masses on Sundays and important feasts. The procession, accompanied with chants, may be made to another church (a station), for readings and prayers. The processions' hymns are sometimes assembled in a book called a processional. Made for an urban church dedicated to St Mary and with dependent suburban churches, this one may have been for Salisbury Cathedral, but one of its processions is adapted for the tradition (use) of Norwich and a procession with the relics of St Swithin suggests Winchester, too. A rare illustrated processional, it has diagrams indicating the position of participants. For Holy Saturday, the diagram shows the blessing of paschal fire outside the church. A taperer (acolyte or altar boy holding a candle) heads the procession, next a deacon carries the gospel book, followed by the bishop in green, with two deacons to his left, a thurifer (acolyte carrying an incense container) to his right and beyond him the fire, another taperer and to the rear an object which has been interpreted as the Paschal candle in a holder decorated with a dragon or a dragon banner.