startshape FIELD background {hue 180 sat .2 b -.7}

rule ROW {

4 * [x 2.5 ] DIR {}

}

# Call ROW here. rule FIELD {

3 * {y 2.5} ROW {}

}

rule DIR {

BORDER {}
RPIJL {z 1}

}

rule PIJL {

TRIANGLE {s 1.5 1 y .2}
SQUARE {s .4 1 y -.3}

}

rule BORDER {

CIRCLE {s 2.3}
CIRCLE {s 1.6 b 1}

}

rule RPIJL {

PIJL {r 10}

}

rule RPIJL {

PIJL {r 30}

}

rule RPIJL {

PIJL {r 60}

}

rule RPIJL {

PIJL {r 90}

}

rule RPIJL {

PIJL {r -60}

}

rule RPIJL {

PIJL {r -30}

}

rule RPIJL {

PIJL {r -10}

}

rule RPIJL {

PIJL {r -90}

}

rule RPIJL {

PIJL {r 60}

}