The semaphore flag signaling system is an alphabet signaling system based on the waving of a pair of hand-held flags
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A
or 1
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B
or 2
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C
or 3
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D
or 4
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E
or 5
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F
or 6
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G
or 7
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H
or 8
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I
or 9
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J
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K
or zero
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L
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M
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N
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O
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P
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Q
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R
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S
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T
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U
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V
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W
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X
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Y
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Z
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numerical
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annull
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error
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