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Menu: View->Render->Reflection
Mouse menu: Render->Reflection
Activate or desactivate deactivate the refection reflection defined.
Menu: View->Render->Define reflection
Mouse menu: Render->Define reflection
Visual effect to simulate a mirroring surface. A cubic environment with rectangular images is projected over the model.
The six images can be predefined patterns or user defined (from an image file). 
Note: The quality of visualization is controlled via preferences (see Preferences).