<X3D profile='Immersive'> is satisfactory for this model - also ensure that child Inline models do not exceed this profile/component combination, since this parent scene must have an equal or higher combination X3D version 4.0 was approved by Web3D Consortium and ISO in 2023. X3D version 4.0 offers many new features including interoperability with HTML5, glTF 2.0 Physically Based Rendering (PBR), and Web Audio API. <meta name='warning' content='under development'/> <meta name='warning' content='mmog.ern.nps.edu restricted to internal access within NPS firewall only'/> <ExternProtoDeclare name="HeadsUpDisplay"/> has no corresponding ProtoInstance <TouchSensor DEF='TourTouch'/> has peer Billboard node which may make user selection of geometry difficult, consider superimposing additional transparent Shape geometry to assist selection