There are several; one that has been largely retired (but I understand is still sometimes used particularly by older BSL users) involves reference to nose shape; the one we've been taught sketches out the shape and location of twisted payot (though that's not the sign that either Spread the Sign or Sign BSL gives, huh).
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Date: 2016-06-13 03:47 pm (UTC)(no subject)
Date: 2016-06-13 03:56 pm (UTC)(no subject)
Date: 2016-06-13 08:38 pm (UTC)(no subject)
Date: 2016-06-13 03:57 pm (UTC)