SDF_THIN
CLR(sc->flags, SDF_THIN);
SET(sc->flags, SDF_THIN);
CLR(sc->flags, SDF_THIN);
if (ISSET(sc->flags, SDF_THIN) && sd_thin_params(sc, flags) != 0) {
CLR(sc->flags, SDF_THIN);
if (ISSET(sc->flags, SDF_THIN)) {