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<area shape="rect" id="Node000001" title="index of refraction : https://github.com/KhronosGroup/glTF/blob/main/extensions/2...." alt="" coords="5,112,162,155"/>
<area shape="rect" id="Node000002" title=" " alt="" coords="6,5,161,64"/>
<area shape="poly" id="edge1_Node000001_Node000002" title=" " alt="" coords="86,79,86,112,81,112,81,79"/>
</map>
