DuotoneMode       402 coders/psd.c       case DuotoneMode: return "Duotone";
DuotoneMode       851 coders/psd.c         (psd_info.mode == DuotoneMode))
DuotoneMode       871 coders/psd.c         if (psd_info.mode == DuotoneMode)
DuotoneMode      1251 coders/psd.c                   (psd_info.mode == DuotoneMode))