| radius | Reanimate.Builtin.TernaryPlot | 
| Raster | Reanimate.Render | 
| raster | Reanimate.Raster, Reanimate | 
| RasterAuto | Reanimate.Render | 
| RasterConvert | Reanimate.Render | 
| RasterInkscape | Reanimate.Render | 
| RasterNone | Reanimate.Render | 
| RasterRSvg | Reanimate.Render | 
| rasterSized | Reanimate.Raster | 
| readVar | Reanimate.Scene, Reanimate | 
| reanimate | Reanimate | 
| removeGroups | Reanimate.Svg, Reanimate | 
| render | Reanimate.Render | 
| renderGeometry | Reanimate.GeoProjection | 
| RenderGif | Reanimate.Render | 
| renderLABCoordinates | Reanimate.ColorSpace | 
| RenderMp4 | Reanimate.Render | 
| renderPolyShape | Reanimate.PolyShape | 
| renderPolyShapePoints | Reanimate.PolyShape | 
| renderPolyShapes | Reanimate.PolyShape | 
| renderSensitivity | Reanimate.ColorSpace | 
| renderSnippets | Reanimate.Render | 
| renderSvg | Reanimate.Animation | 
| renderSvgs | Reanimate.Render | 
| renderTree | Reanimate.Animation | 
| RenderWebm | Reanimate.Render | 
| renderXYZCoordinates | Reanimate.ColorSpace | 
| repeatA | Reanimate.Animation, Reanimate | 
| replaceUses | Reanimate.Svg.Unuse, Reanimate.Svg, Reanimate | 
| requireExecutable | Reanimate.Misc | 
| reverseA | Reanimate.Animation, Reanimate | 
| reverseE | Reanimate.Effect, Reanimate | 
| reverseS | Reanimate.Signal, Reanimate | 
| rgbComponents | Reanimate.Interpolate | 
| rotate | Reanimate.Svg.Constructors, Reanimate.Svg, Reanimate | 
| rotateAround | Reanimate.Svg.Constructors, Reanimate.Svg, Reanimate | 
| rotateAroundCenter | Reanimate.Svg.Constructors, Reanimate.Svg, Reanimate | 
| runCmd | Reanimate.Misc | 
| runCmdLazy | Reanimate.Misc | 
| runCmd_ | Reanimate.Misc |