| radiating | Extras.Animation |
| radius_cond | Extras.Geometry |
| radius_gt | Extras.Geometry |
| random | Extras.Game |
| randomAnimationOf | Extras.Cw |
| randomAutoSlideshow | Extras.Cw |
| randomBox | Extras.Widget |
| randomDrawingOf | Extras.Cw |
| randomized | Extras.Turtle |
| randomNumbers | Standard, Standard.Debug, Standard.Pipes |
| randomPoints | Extras.Geometry |
| randomPool | Extras.Game |
| randomSlideshow | Extras.Cw |
| randomTracks | Extras.Turtle |
| range | Standard, Standard.Debug, Standard.Pipes |
| ReactorFun | Extras.Widget |
| rectangle | Standard, Standard.Debug, Standard.Pipes |
| red | Extras.Colors |
| remainder | Standard, Standard.Debug, Standard.Pipes |
| render | Extras.Stamp |
| repeat | Extras.Turtle |
| repeated | Standard, Standard.Debug, Standard.Pipes |
| repeatedly | Extras.Animation |
| repeatedMotion | Standard, Standard.Debug, Standard.Pipes |
| repeatFor | Standard, Standard.Debug, Standard.Pipes |
| repeating | Standard, Standard.Debug, Standard.Pipes |
| repeatRandom | Extras.Turtle |
| repeatWhile | Standard, Standard.Debug, Standard.Pipes |
| replacing | Extras.Animation |
| rest | Standard, Standard.Debug, Standard.Pipes |
| return | Extras.Do |
| reversed | Standard, Standard.Debug, Standard.Pipes |
| RGB | Standard, Standard.Debug, Standard.Pipes |
| rgb | Standard, Standard.Debug, Standard.Pipes |
| RGBA | Standard, Standard.Debug, Standard.Pipes |
| right | Standard, Standard.Debug, Standard.Pipes |
| rightBy | Standard.Pipes |
| rightPoint | Standard, Standard.Debug, Standard.Pipes |
| rJustified | Standard, Standard.Debug, Standard.Pipes |
| rose | Extras.Colors |
| rotate | Standard.Pipes |
| rotated | Lessons.Logic, Standard, Standard.Debug, Standard.Pipes |
| rotatedBlock | Extras.SnapBlock |
| rotatedPoint | Standard, Standard.Debug, Standard.Pipes |
| rotatedVector | Standard, Standard.Debug, Standard.Pipes |
| rotate_axes | Extras.Geometry |
| rounded | Standard, Standard.Debug, Standard.Pipes |
| rt | Extras.Turtle |
| run | Standard, Standard.Debug, Standard.Pipes |