| http://www.w3.org/ns/prov#value | - data points and comprising: a first stroke feature provided as a value corresponding with the average worm moment based moment of stroke, a second stroke feature provided as a value corresponding with the aspect ratio of a stroke, said stroke aspect ratio generally being determined to be K/??* ARCTAN (stroke-height/stroke-width) where K is a constant, and a third stroke feature provided as a valu
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