 The term "Rose Line" as the Paris Meridian was given by Dan Brown in his 2003 novel "The Da Vinci Code" as an alternate name for "the world's first prime meridian", identified as the Paris Meridian.Brown's novel also conflates this meridian with a gnomon in the Parisian church of Saint-Sulpice marked in the floor with a brass line, as did the 1967 Priory Document "Le Serpent Rouge - Notes sur Saint-Germain-des-Près et Saint-Sulpice de Paris".The Paris Meridian actually passes about 100 metres east of the gnomon, which according to Sharan Newman and a sign in the church was "never called a Rose-Line".