LOWER_F
options |= LOWER_F;
if ((options & ~(LOWER_F | LOWER_C | LOWER_R)) != 0) {
if ((options & ~(LOWER_F | UPPER_C | LOWER_R | LOWER_Z |
if ((options & ~(LOWER_F | LOWER_D)) != 0) {
if ((options & ~(LOWER_F | UPPER_F)) != 0) {
if ((options & ~(LOWER_F | LOWER_P)) != 0) {