group() {
	render(convexity = 1) {
		difference() {
			square(size = [10, 10], center = true);
			circle($fn = 0, $fa = 12, $fs = 2, r = 3);
		}
	}
	multmatrix([[1, 0, 0, 12], [0, 1, 0, 0], [0, 0, 1, 0], [0, 0, 0, 1]]) {
		render(convexity = 1) {
			square(size = [10, 10], center = true);
			circle($fn = 0, $fa = 12, $fs = 2, r = 3);
		}
	}
}