Are you familiar with the hand signal for help?

Are you familiar with the hand signal for help?

The signal is performed by holding your hand up with your thumb tucked into your palm, then folding your fingers down, symbolically trapping your thumb in your fingers. It was intentionally designed as a single continuous hand movement, rather than a sign held in one position, that could be made easily visible.

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Are you familiar with the hand signal for help?
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