In case you wondered…

The little blue and yellow bullet images…

International maritime signal: kilo Small version of the international maritime signal flag for “kilo”, also means “I wish to communicate with you.” With one numeral: “I wish to communicate with you by; 1) Morse signalling by hand-flags or arms; 2) Loud hailer (megaphone); 3) Morse signalling lamp; 4) Sound signals.“.

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