Renders: Select which render engine you wish to select a material from: RedSDK, LightWorks, or both. Category: Groups of Luminances such as complex, single, sky, or the name of an open drawing.
Material: This field depends on the category. For example, if the Category is sky, etc. Edit Lumninance: The list of the Luminances available in the selected category. Available In: Shows which of the render engines have definitions for the selected luminance. Load to render luminance only: If on, the geometry of the luminance object is hidden and only the illumination effects are shown. Edit... Opens the Render Manager.