User Guide > Rendering and Render Setup > Shading > About shading and texturing
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Double-sided shaded surfaces
Double-sided shading lets you shade a surface with one material on one side and a different material on the other side. This is the only way you can apply more than one material to a NURBS surface. You use both the Condition and Sampler info utility to create this effect. For more information on these utility nodes, see About General Utilities.
To create double-sided shaded surfaces, see Create double-sided shaded surfaces.