X3D version 4.0 was approved by Web3D Consortium and ISO in 2023.[/X3D, diagnostic]
X3D version 4.0 offers many new features including interoperability with HTML5, glTF
2.0 Physically Based Rendering (PBR), and Web Audio API.[/X3D, diagnostic]
<Script DEF='Clouds'/> contained CDATA source block needs initialize() method when
no fields and no url
are defined, otherwise has no action [/X3D/Scene/Script[2], warning]