Before

group( borderColor: 'blue', borderWidth: 4, fill: 'cyan' ){
    rect( x: 10, y: 10, width: 290, height: 80, arcWidth: 20, arcHeight: 20 )
    circle( cx: 90, cy: 80, radius: 50 )
    polygon(points: [175, 38, 229, 69, 229, 131, 175, 162, 121, 131, 121, 69])
}

After

subtract( borderColor: 'blue', borderWidth: 4, fill: 'cyan' ){
    rect( x: 10, y: 10, width: 290, height: 80, arcWidth: 20, arcHeight: 20 )
    circle( cx: 90, cy: 80, radius: 50 )
    polygon(points: [175, 38, 229, 69, 229, 131, 175, 162, 121, 131, 121, 69])
}