Index - R
| readable | Turtle.Prelude, Turtle |
| readline | Turtle.Prelude, Turtle |
| readonly | Turtle.Prelude, Turtle |
| readTextFile | Turtle.Prelude, Turtle |
| realpath | Turtle.Prelude, Turtle |
| reduce | Turtle.Shell, Turtle |
| relative | Turtle |
| replicateM_ | Turtle |
| repr | Turtle.Format, Turtle |
| rm | Turtle.Prelude, Turtle |
| rmdir | Turtle.Prelude, Turtle |
| rmtree | Turtle.Prelude, Turtle |
| roo | Turtle.Prelude, Turtle |
| root | Turtle |
| Row | Turtle.Prelude, Turtle |
| rox | Turtle.Prelude, Turtle |
| runManaged | Turtle |
| rwo | Turtle.Prelude, Turtle |
| rwx | Turtle.Prelude, Turtle |