We present a "heads-up" shorthand for entering text … from the surface, and that (ii) the user … even as a single continuous gesture if desired. … [p. 216] Users well practiced in both Graffiti and … very high.  … In our experience, users generally require two to … [The letters are grouped into 8 zones around a center 'resting zone'.  The stylus enters a zone and returns to rest from another zone.  The first zone indicates a subset of characters, the second zone indicates which one.]  
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