Index - L
| l | Turtle.Format, Turtle |
| letter | Turtle.Pattern, Turtle |
| liftA2 | Turtle |
| liftIO | Turtle.Shell, Turtle |
| limit | Turtle.Prelude, Turtle |
| limitWhile | Turtle.Prelude, Turtle |
| Line | Turtle.Line, Turtle |
| linesToText | Turtle.Line, Turtle |
| lineToText | Turtle.Line, Turtle |
| lower | Turtle.Pattern, Turtle |
| lowerBounded | Turtle.Pattern, Turtle |
| ls | Turtle.Prelude, Turtle |
| lsdepth | Turtle.Prelude, Turtle |
| lsif | Turtle.Prelude, Turtle |
| lstat | Turtle.Prelude, Turtle |
| lstree | Turtle.Prelude, Turtle |