<?xml version="1.0" encoding="UTF-8"?>
      <!DOCTYPE X3D PUBLIC "ISO//Web3D//DTD X3D 3.3//EN" "https://www.web3d.org/specifications/x3d-3.3.dtd">
      
         <!--
Color key: 
<X3dNode
          DEF='idName' field='value'/> 
 matches 
<XmlElement
          DEF='idName' attribute='value'/> 
(Light blue background: behavior node) (Grey background: inserted documentation) (Magenta background: X3D Extensibility)
          -->
      
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