display_format
return(display_format(ac, av, 1/*diagnostic output*/, MFI_DCMD_CFG_FOREIGN_DISPLAY));
return(display_format(ac, av, 1/*diagnostic output*/, MFI_DCMD_CFG_FOREIGN_PREVIEW));
return(display_format(ac, av, 0/*normal display*/, MFI_DCMD_CFG_FOREIGN_DISPLAY));
int display_format(int ac, char **av, int diagnostic, mfi_dcmd_t display_cmd);