| Simulator Background Properties: To open the simulator background Properties Box, depress Select. Then double-click or control-click in a clear area of the simulation window. In the Properties Box, you can determine whether the representation of light by the incident light and reflected light tools will be colored arrows or waves. You can also opt to show non-visible light. If this box is checked, bars for infrared and ultraviolet light will appear in the intensity graph (for the source), the sensitivity graph (for the detector), and the reflection percentage graphs (for materials A and B).