Therefore, the "Kogetsusho" and commentaries before it are called 'kyuchu' (old commentaries) and the "Genchu shui" (Addenda to Commentaries on Genji) written by Keichu, a scholar of Japanese classical literature, and other commentaries afterwards are called 'shinchu' (new commentaries).
そのため、『湖月抄』までを「旧注」といい、国学者の契沖の著した『源註拾遺』からを「新注」という。