startshape branches rule branches {

straightline1 { }
straightline2 {}
branches { y 50 s .75 r 45}
branches { y 50 s .75 r 315}

} rule straightline1 {

hollow{}
straightline1 { s .999 y .1 r .05 }

} rule straightline2 {

hollow{}
straightline2 { s .999 y .1 r 359.95 }

} rule hollow {

CIRCLE {b -1}
CIRCLE { b 1 hue 130 saturation .95 s .99999 }

}