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='GeometryComputationScript'/> url array address(es) missing online http/https
references (url='"ViewFrustumPrototypeScript.js"') [/X3D/Scene/ProtoDeclare/ProtoBody/Script, info]
<Anchor DEF=''/> url array address(es) missing online http/https references (url='"ViewFrustumExample.x3d"')
[/X3D/Scene/Anchor, info]