"Some bright lad wandering on the cliff will recognize S O S when he sees it, I hope."
Samuel F. B. Morse
Public DomainSamuel F. B. Morse

S O S is the international Morse Code distress signal, first introduced by the German government in 1905:    · · · — — — · · ·

Morse Code was devised by Samuel F. B. Morse in the 1800s,

Translate your comments into Morse code here.