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]
It is good practice to identify editor(s) used, for example <meta name='generator'
content='X3D-Edit, https://savage.nps.edu/X3D-Edit'/> [/X3D/head, info]
<Sphere DEF=''/> geometry node must have Shape node as parent [/X3D/Scene/Transform/ParticleSystem/BoundedPhysicsModel/Sphere, error]
<Sphere DEF=''/> geometry node must have Shape node as parent [/X3D/Scene/Transform/ParticleSystem/Sphere, error]
<Appearance DEF=''/> found outside of a parent Shape, ProtoBody, field or fieldValue
element [/X3D/Scene/Transform/ParticleSystem/Appearance, error]
<ShaderPart DEF='' value=''/> needs to be contained by a <ComposedShader> node rather
than a <ComposedShader> node [/X3D/Scene/Transform/ParticleSystem/Appearance/ComposedShader/ShaderPart[1], error]
<ShaderPart DEF='commonfs' value=''/> needs to be contained by a <ComposedShader>
node rather than a <ComposedShader> node [/X3D/Scene/Transform/ParticleSystem/Appearance/ComposedShader/ShaderPart[2], error]