| Answer | Crossword Clue |
|---|---|
| SEMAPHORE | System of signaling. |
| MORSECODE | Signaling system. |
| BAUDS | Units of speed in telegraphic signaling. |
| TEN | Word signaling the end of a match |
| BELL | Sound signaling the start and end of class |
| EOM | Abbr. signaling that the subject line contains the full content of an e-mail |
