DEF EXTERNPROTO FALSE IS NULL PROTO ROUTE TO TRUE USE eventIn eventOut exposedField field MFColor MFFloat MFInt32 MFNode MFRotation MFString MFTime MFVec2f MFVec3f SFBool SFColor SFFloat SFImage SFInt32 SFNode SFRotation SFString SFTime SFVec2f SFVec3f Anchor AudioClip Appearance Background Billboard Box Collision Color ColorInterpolator Cone Coordinate CoordinateInterpolator Cylinder CylinderSensor DirectionalLight ElevationGrid Extrusion Fog FontStyle Group ImageTexture IndexedFaceSet IndexedLineSet Inline LOD Material MovieTexture NavigationInfo Normal NormalInterpolator OrientationInterpolator PixelTexture Plane PlaneSensor PointLight PointSet PositionInterpolator ProximitySensor ScalarInterpolator Script Shape Sensor Sound Sphere SphereSensor SpotLight Switch Text TextureCoordinate TextureTransform TimeSensor TouchSensor Transform Viewpoint VisibilitySensor WorldInfo