Index - O
| o | Turtle.Format, Turtle |
| octDigit | Turtle.Pattern, Turtle |
| once | Turtle.Pattern, Turtle |
| oneOf | Turtle.Pattern, Turtle |
| ooo | Turtle.Prelude, Turtle |
| oos | Turtle.Prelude, Turtle |
| oox | Turtle.Prelude, Turtle |
| option | Turtle.Pattern, Turtle |
| optional | Turtle |
| output | Turtle.Prelude, Turtle |
| owo | Turtle.Prelude, Turtle |
| owx | Turtle.Prelude, Turtle |