Tree

startshape tree
 
rule tree {
	SQUARE {y 0.2 s 0.1 1}
	fork{}
}
 
rule fork {
	branch {y 1 x -0.33 r 45}
	branch {y 1 x 0.33 r -45}
}
 
rule fork {
	branch {y 1 x -0.25 r 30}
	branch {y 1 x 0.25 r -30}
}
 
rule branch {
	fork {s 0.7}
	SQUARE {s 0.1 1}
}