group() {
	minkowski(convexity = 0);
	glide(path = undef, convexity = 0);
	subdiv(level = 1, convexity = 0);
	hull();
	resize(newsize = [0,0,0], auto = [0,0,0]);
	group();
	group();
	group();
	intersection();
	group() {
		sphere($fn = 0, $fa = 12, $fs = 2, r = 1);
	}
	union();
	difference();
	intersection();
	linear_extrude(height = 100, center = false, convexity = 1, scale = [1, 1], $fn = 0, $fa = 12, $fs = 2);
	linear_extrude(height = 100, center = false, convexity = 1, scale = [1, 1], $fn = 0, $fa = 12, $fs = 2);
	rotate_extrude(convexity = 2, $fn = 0, $fa = 12, $fs = 2);
	rotate_extrude(convexity = 2, $fn = 0, $fa = 12, $fs = 2);
	import(file = "", layer = "", origin = [0, 0], scale = 1, convexity = 1, $fn = 0, $fa = 12, $fs = 2);
	import(file = "", layer = "", origin = [0, 0], scale = 1, convexity = 1, $fn = 0, $fa = 12, $fs = 2);
	import(file = "", layer = "", origin = [0, 0], scale = 1, convexity = 1, $fn = 0, $fa = 12, $fs = 2);
	import(file = "", layer = "", origin = [0, 0], scale = 1, convexity = 1, $fn = 0, $fa = 12, $fs = 2);
	group();
	cube(size = [1, 1, 1], center = false);
	sphere($fn = 0, $fa = 12, $fs = 2, r = 1);
	cylinder($fn = 0, $fa = 12, $fs = 2, h = 1, r1 = 1, r2 = 1, center = false);
	polyhedron(points = undef, faces = undef, convexity = 1);
	square(size = [1, 1], center = false);
	circle($fn = 0, $fa = 12, $fs = 2, r = 1);
	polygon(points = undef, paths = undef, convexity = 1);
	projection(cut = false, convexity = 0);
	render(convexity = 1);
	surface(file = "", center = false, invert = false);
	multmatrix([[1, 0, 0, 0], [0, 1, 0, 0], [0, 0, 1, 0], [0, 0, 0, 1]]);
	multmatrix([[1, 0, 0, 0], [0, 1, 0, 0], [0, 0, 1, 0], [0, 0, 0, 1]]);
	multmatrix([[-1, 0, 0, 0], [0, 1, 0, 0], [0, 0, 1, 0], [0, 0, 0, 1]]);
	multmatrix([[1, 0, 0, 0], [0, 1, 0, 0], [0, 0, 1, 0], [0, 0, 0, 1]]);
	multmatrix([[1, 0, 0, 0], [0, 1, 0, 0], [0, 0, 1, 0], [0, 0, 0, 1]]);
	color([-1, -1, -1, 1]);
	offset(r = 1, $fn = 0, $fa = 12, $fs = 2);
	text(text = "", size = 10, spacing = 1, font = "", direction = "ltr", language = "en", halign = "left", valign = "baseline", $fn = 0, $fa = 12, $fs = 2);
}