Another show-case from Dennis Ippel which is not just nice but also shows a limitation of the current implementation.
Pixelfaces in x3dom
If the user does not give any normals the system creates always smooth normals for every vertices. This is (almost) right for the support Level 2 we proposed but this will also irritate people. So we really should increase the support Level to 4 and fully support any creaseAngle value. There is already a ticket for this