A friend tipped me that Tactile ASL and Pro-Tactile ASL are two different things.  The former still has a strong visual mode, while the latter uses the body much more and is more powerful because several people can use it at the same time rather than only two.  I am particularly intrigued that PTASL uses evidence markers that indicate where information came from, and it employs the body as a spatial map for storytelling.

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