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Fist to chest is indicating which side the GLM is on. Fingers indicate row number.
Tapping your palm (indicator) means "gimme the count"
Wiggling fingers, at your side, "gimme the outs".
Fingers to side of brim, IFF, no outs.
Index finger to side of brim, IFF, more than no outs.
That's this season. It's changed every year for the past dozen, or so.
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