<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE X3D PUBLIC "ISO//Web3D//DTD X3D 4.0//EN" "https://www.web3d.org/specifications/x3d-4.0.dtd">
<!--
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<X3dNode
field='value'/>
matches XML terminology
<XmlElement
attribute='value'/>
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(Grey background inside box: inserted documentation)
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-->
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