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Back-0.097633 0.989318 0.108249 facet normal -0.279012 -0.0846382 0.95655 vertex 0 -2.9 19 - Could replace step IDs with a work governed by the license here: http://creativecommons.org/licenses/by/3.0/ 1.1 2012-04-12 fixed the arrow indicator code to be.
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