Man pages matching name hawki_step_subtract_bkg in section 7:

hawki_step_subtract_bkg.7.en	debian 10 / cpl-plugin-hawki-doc
hawki_step_subtract_bkg.7.en	debian 11 / cpl-plugin-hawki-doc
hawki_step_subtract_bkg.7.en	debian 12 / cpl-plugin-hawki-doc