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Signal Message : 39 phrases in 13 subjects |
| American usage, not spelling | 1 |
| Communications | 1 |
| Electronics | 4 |
| General | 1 |
| Information security and data protection | 2 |
| Information technology | 1 |
| Mass media | 4 |
| Meteorology | 2 |
| Military | 1 |
| Oil and gas | 1 |
| Programming | 2 |
| Security systems | 3 |
| Telecommunications | 16 |