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. X3D/head/meta title (i.e. filename 'arcold.x3d') is expected at end of identifier (url) value <Script DEF='S1'> <field name='startnode' accessType='inputOutput'/> must define function set_startnode (newValue) <Script DEF='S1'> <field name='startnode' accessType='inputOutput'/> does not send output event via assignment statement startnode=___; <Script DEF='S1'> <field name='endnode' accessType='inputOutput'/> must define function set_endnode (newValue) <Script DEF='S1'> <field name='endnode' accessType='inputOutput'/> does not send output event via assignment statement endnode=___; <Script DEF='S1'> <field name='transnode' accessType='inputOutput'/> must define function set_transnode (newValue) <Script DEF='S1'> <field name='transnode' accessType='inputOutput'/> does not send output event via assignment statement transnode=___; <Script DEF='S1'> <field name='rotscalenode' accessType='inputOutput'/> must define function set_rotscalenode (newValue) <Script DEF='S1'> <field name='rotscalenode' accessType='inputOutput'/> does not send output event via assignment statement rotscalenode=___;