Index - U
| u | Turtle.Format, Turtle |
| unless | Turtle |
| unsafeTextToLine | Turtle.Line, Turtle |
| unset | Turtle.Prelude, Turtle |
| upper | Turtle.Pattern, Turtle |
| upperBounded | Turtle.Pattern, Turtle |
| using | Turtle.Shell, Turtle |
| utc | Turtle.Format, Turtle |
| UTCTime | Turtle |
turtle-1.4.1: Shell programming, Haskell-style