| radius | Reanimate.Builtin.TernaryPlot |
| Raster | Reanimate.Parameters, Reanimate.Render |
| raster | Reanimate.Raster, Reanimate |
| RasterAuto | Reanimate.Parameters, Reanimate.Render |
| RasterConvert | Reanimate.Parameters, Reanimate.Render |
| RasterInkscape | Reanimate.Parameters, Reanimate.Render |
| RasterNone | Reanimate.Parameters, Reanimate.Render |
| RasterRSvg | Reanimate.Parameters, Reanimate.Render |
| rasterSized | Reanimate.Raster, Reanimate |
| rawLeastWork | Reanimate.Morph.LeastWork |
| rawLinear | Reanimate.Morph.Linear |
| rayIntersect | Reanimate.Math.Common |
| readVar | Reanimate.Scene, Reanimate |
| reanimate | Reanimate |
| RelTrig | Reanimate.Morph.Rigid |
| removeGroups | Reanimate.Svg, Reanimate |
| renameOrCopyFile | Reanimate.Misc |
| render | Reanimate.Render |
| renderAMesh | Reanimate.Math.Smooth |
| renderDual | Reanimate.Math.Render |
| renderGeometry | Reanimate.GeoProjection |
| RenderGif | Reanimate.Render |
| renderLABCoordinates | Reanimate.ColorSpace |
| renderMesh | Reanimate.Math.Smooth |
| RenderMp4 | Reanimate.Render |
| renderPolyShape | Reanimate.PolyShape |
| renderPolyShapePoints | Reanimate.PolyShape |
| renderPolyShapes | Reanimate.PolyShape |
| renderSensitivity | Reanimate.ColorSpace |
| renderSnippets | Reanimate.Render |
| renderSSSP | Reanimate.Math.Render |
| renderSvg | Reanimate.Animation |
| renderSvgs | Reanimate.Render |
| renderTree | Reanimate.Animation |
| renderTriangulation | Reanimate.Math.Render |
| RenderWebm | Reanimate.Render |
| renderXYZCoordinates | Reanimate.ColorSpace |
| repeatA | Reanimate.Animation, Reanimate |
| replaceUses | Reanimate.Svg.Unuse, Reanimate.Svg, Reanimate |
| requireExecutable | Reanimate.Misc |
| requireRaster | Reanimate.Render |
| reverseA | Reanimate.Animation, Reanimate |
| reverseE | Reanimate.Effect, Reanimate |
| reverseS | Reanimate.Signal, Reanimate |
| rgbComponents | Reanimate.Interpolate |
| rightTurn | Reanimate.Math.Visibility |
| Ring | |
| 1 (Type/Class) | Reanimate.Math.Common |
| 2 (Data Constructor) | Reanimate.Math.Common |
| ringAccess | Reanimate.Math.Common |
| ringClamp | Reanimate.Math.Common |
| ringMap | Reanimate.Math.Common |
| ringPack | Reanimate.Math.Common |
| ringRayIntersect | Reanimate.Math.Common |
| ringSize | Reanimate.Math.Common |
| ringUnpack | Reanimate.Math.Common |
| rotate | Reanimate.Svg.Constructors, Reanimate.Svg, Reanimate |
| rotateAround | Reanimate.Svg.Constructors, Reanimate.Svg, Reanimate |
| rotateAroundCenter | Reanimate.Svg.Constructors, Reanimate.Svg, Reanimate |
| rotationalTrajectory | Reanimate.Morph.Rotational |
| rtfdBackgroundColor | Reanimate.Builtin.Documentation |
| runCmd | Reanimate.Misc |
| runCmdLazy | Reanimate.Misc |
| runCmd_ | Reanimate.Misc |