| RawElement | Codec.Wavefront.Element, Codec.Wavefront |
| rawFromFile | Codec.Wavefront.IO, Codec.Wavefront |
| RawWavefrontOBJ | Codec.Wavefront.Object, Codec.Wavefront |
| RefactionFresnelAndRayTrace | Codec.Wavefront.Material.Type, Codec.Wavefront.Material, Codec.Wavefront |
| ReflectionAndRayTrace | Codec.Wavefront.Material.Type, Codec.Wavefront.Material, Codec.Wavefront |
| ReflectionOnly | Codec.Wavefront.Material.Type, Codec.Wavefront.Material, Codec.Wavefront |
| ReflexicityRGB | Codec.Wavefront.Material.Type, Codec.Wavefront.Material, Codec.Wavefront |
| Reflexivity | Codec.Wavefront.Material.Type, Codec.Wavefront.Material, Codec.Wavefront |
| reflexivity | Codec.Wavefront.Material.Token |
| ReflexivityCIE | Codec.Wavefront.Material.Type, Codec.Wavefront.Material, Codec.Wavefront |
| ReflexivitySpectral | Codec.Wavefront.Material.Type, Codec.Wavefront.Material, Codec.Wavefront |
| RefractionAndRayTrace | Codec.Wavefront.Material.Type, Codec.Wavefront.Material, Codec.Wavefront |
| RGB | |
| 1 (Type/Class) | Codec.Wavefront.Material.Type, Codec.Wavefront.Material, Codec.Wavefront |
| 2 (Data Constructor) | Codec.Wavefront.Material.Type, Codec.Wavefront.Material, Codec.Wavefront |
| rgb | Codec.Wavefront.Material.Token |