What is a PGP signed message?

Related questions

1. How does open PGP work?
2. How long is a PGP key?
3. Are PGP and GPG keys compatible?
4. Is PGP encryption safe?
5. What is PGP format?

Tags

1. #except
2. #claims
3. #message
4. #means
5. #cryptographically
6. #signed
7. #validate
8. #somewhat
9. #accompanies
10. #important
11. #written
12. #facts
13. #digital
14. #signature
15. #similar