Here data other data structures not included in the previous topics are collected. Those include:
1.Coordinate_system for defining a coordinate system different to the global one that can be assigned to different data structures (e.g. to Transformed_freedoms for changing the local coordinates of a boundary condition, to Group_data to define a material bedding plane orientation, etc.)
2.Damping data used to minimize dynamic oscillations
3.Units to define simulation units.
4.etc.