Minamoto no Yoritomo established the base of bukeyo monjo (a samurai-style document) which consisted of three kinds of documents; these were the Kudashibumi, Gejijo (a document issued by a vassal of the Shogun for conveying Shogun orders) and Migyosho.
源頼朝は下文・下知状・御教書を発給文書の三本柱として武家様文書の基礎を作った。