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This answer has inspired me to a question: say you are a castaway on a desert island. There might be a plane flying casualy but you can miss it. So you want to create some pattern (e.g. put some branches in the sand near the beach) which will signalize S.O.S. to the pilot.

Are there any simple, international, emergency patterns for this purpose?

{ asked by Tomas }

ANSWER

The international distress signal is a triangle of fires.

enter image description here

{ answered by Stefano Borini }
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