Refined 3D UML visualisation of a complex state machine diagram. From a PhD in advanced 3D UML visualisation through X3D. www.x3d-uml.org This state machine diagram has been refined after user task analysis, heuristic evaluation. The initial version is at http Further refinements are planned as a result of formative evaluation. More details can be found in the MODELS'08 paper: X3D-UML: 3D UML State Machine Diagrams Paul McIntosh, Margaret Hamilton, Ron van Schyndel ACM/IEEE 11th International Conference on Model Driven Engineering Languages and Systems www.x3d-uml.org