Render Scene Luminance
Default UI Menu: Options/Drawing Setup/Render Scene Luminance
Ribbon UI Menu:
The options on this page are relevant while rendering. You can specify one or more lights to the overall drawing render. Luminance uses the RedSDK and Lightworks rendering engine, and provides a wider range of effects than standard lights. You can also specify luminance for individual objects (as opposed to the overall drawing) by opening the Luminance page of the object's Properties.
Drawing luminance can be applied to the WCS (World Coordinate System) or UCS (User Coordinate System).