Shinsho HANAYAMA supposes that the notes and corrections written between the lines of 'Hokekyo Gisho' prove that Shotoku Taishi worked over the draft until the very end of his life.
また花山信勝は「法華経義疏」行間の書込み、訂正について、最晩年まで聖徳太子が草稿の推敲を続けていたと推定している。