No, it is not possible to change the orientation of the global coordinate system. Neither is it possible to change the orientation of the local coordinate system of bars and surfaces.
If the 3D orbit function is used too enthusiastically, it may seem that the orientation of global coordinate system has changed. This is an illusion since you’re probably looking from below to the model. Keep using the 3D orbit function or the bottom and right sliders to fix the orientation of the model.
