<human>: Question: What was the warning signal called that warned the sender that there was impending overflow?
Answer: This technique became adopted by several early computer operating systems as a "handshaking" signal warning a sender to stop transmission because of impending overflow; it persists to this day in many systems as a manual output control technique.
 Is the question answered in a satisfactory fashion?

OPTIONS:
- yes
- no
<bot>: yes