Besides, the original manuscript of "Heihan ki" is characterized by a large quantity of shihaibunsho (records written on the other side of documents during the period when paper was very precious).
さらに『兵範記』原本の特長としては、大量の紙背文書（紙が貴重であった時代、正規の文書の裏に書かれた文章）の存在が挙げられる。