When Noh kogaki (small script for Noh) of shirogashira (white haired) such as in "Funa Benkei" (Benkei in the Boat) or "Kurama Tengu" is added, the movements in the performance also get slowly.
また『船弁慶』『鞍馬天狗』など、白頭の能小書がつくと位が重くなる。