These letters of Rennyo are called 'Gobunsho' by the Hongan-ji sect of the Jodo Shinshu school, 'Ofumi' by the Otani sect of the Shinshu school, and 'Gokansho' by the Kosho sect of the Shinshu school.
浄土真宗本願寺派では「御文章（ごぶんしょう）」といい、真宗大谷派では「御文」、真宗興正派では「御勧章（ごかんしょう）」という。