Fractal Plant
- Variables: X, F
- Constants: +, -
- Start: X
- Productions: X = F-[[X]+X]+F[+FX]-X, F = FF
- Let F be a forward move, - be 25 degrees left, + be 25 degrees right
- An opening bracket ("[") means "save the current state of the turtle
- A closing bracket ("]") means "restore the state of the turtle from
the corresponding opening bracket"