group() {
	intersection() {
		surface(file = "example010.dat", center = true);
		multmatrix([[0.707107, -0.707107, 0, 0], [0.707107, 0.707107, 0, 0], [0, 0, 1, 0], [0, 0, 0, 1]]) {
			surface(file = "example010.dat", center = true);
		}
	}
}