ttyflush
ttyflush(int);
returnValue |= (ttyflush(SYNCHing|flushout) > 0);
old = ttyflush(SYNCHing|flushout);
old = ttyflush(SYNCHing|flushout);
(void) ttyflush(1); /* flush already enqueued data */
(void) ttyflush(1);
(void) ttyflush(1); /* Flush/drop output */
(void) ttyflush(0);