Composed of multiple cards defining your modifications on the 3D model and two buttons (previous state and apply next action).
Previous state: This button permits to rollback your actions until the opening of the editor (initial state).
Next action: This button permit to go forward your actions from initial state to last one.
If you rollback some times and create a new modification of the 3D model, it will destroy all the modifications after the actual state.
If you close the window, you will lose all the history.