@sets a_set : {
    named_set : {1, 3, 7},
	{not, named, set},
	@tag_with_params(p1, p2, p3) { e1, e2, e3 },
	@tag_with_params(p1, p2, p3) @tag2_with_params(p, pp, ppp) { e1, e2, e3 },
}

@empty_set empty : {
}

@tagged_unnamed_set {
	a_label: {unnamed_set_element}
}

@showcase_mixed_set_scoping {
	@symbol_label
	+: (1 2 3],
	@symbol_label
	*: [x y z),
}