| Moved in VRML2.0 to fields of geometry nodes |
| The ShapeHints node indicates that IndexedFaceSets are solid, contain ordered vertices, or contain convex faces. |
| These hints allow VRML implementations to optimize certain rendering features. |
| Optimizations that may be performed include enabling back-face culling and disabling two-sided lighting. |
| For example, if an object is solid and has ordered vertices, an implementation may turn on backface culling and turn off two-sided lighting. |
| If the object is not solid but has ordered vertices, it may turn off backface culling and turn on two-sided lighting. |