Man pages matching name naco_util_img_std_cat in section 7:

naco_util_img_std_cat.7.en	debian 10 / cpl-plugin-naco-doc
naco_util_img_std_cat.7.en	debian 11 / cpl-plugin-naco-doc
naco_util_img_std_cat.7.en	debian 12 / cpl-plugin-naco-doc