The Tur O.C. 620 quotes from his father the Rosh (Yoma siman 19, 20) various practices about saying Selichos on Yom Kippur. These are quoted from Geonic responsa and from the Raaviah. Yet almost no one says them, and no machzorim print them. The few communities that do say them hand out booklets. When did the practice of saying selichos on Yom Kippur stop?