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(LightWorks functionality is available with Only with the LightWorks Plug-in)
Another way to add lights to your drawing is to assign luminance properties to the entire mode, or to individual 3D objects. Luminance is one or more lights attached directly to objects, or to the overall WCS or UCS. Luminance differs from lights (see Lights in that the range of luminance effects is much larger than those available for drawing lights .Luminance properties are parameters of the LightWorks rendering engine. An object's luminance can be seen either in Draft or Quality rendering, as long as an appropriate LightWorks rendering mode is used.Several luminances and categories are provided by default. You can create a new luminance via the Luminances Editor (see Managing Luminances in the Render Manager).