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] <ShaderPart DEF='' value=''/> needs to be contained by a <ComposedShader> node rather than a <ComposedShader> node [/X3D/Scene/ProtoDeclare/ProtoBody/Transform/Shape/Appearance/ComposedShader[1]/ShaderPart[1], error] <ShaderPart DEF='' value=''/> needs to be contained by a <ComposedShader> node rather than a <ComposedShader> node [/X3D/Scene/ProtoDeclare/ProtoBody/Transform/Shape/Appearance/ComposedShader[1]/ShaderPart[2], error] <ShaderPart DEF='' value=''/> needs to be contained by a <ComposedShader> node rather than a <ComposedShader> node [/X3D/Scene/ProtoDeclare/ProtoBody/Transform/Shape/Appearance/ComposedShader[2]/ShaderPart[1], error] <ShaderPart DEF='' value=''/> needs to be contained by a <ComposedShader> node rather than a <ComposedShader> node [/X3D/Scene/ProtoDeclare/ProtoBody/Transform/Shape/Appearance/ComposedShader[2]/ShaderPart[2], error]