// Every statement and source form of the graph language, in one text.
group g0 = "Signal";
group g1 = "Inner" in g0;
group stages = "Stages";

let n0 = FloatLiteral { value: 2 } in g1;
let n1 = FloatLiteral {
  value: -3.5,
  unit: "V",
};
let lowpass = dsp.filter.iir(input: &n0.value) { response: lowpass, cutoff: 1e3 } in stages;
let n4 = math.add(
  a: n0.value.copy(),
  b: n4.sum.copy().prev(),
)
{ label: r#"a "quoted" label"# };
let n5 = io.print(value: &mut n4.sum);
let n6 = "math.add"(a: n1.value.clone(), "b": _);
let n7 = Merge(inputs: [n0.value, n1.value,]);
n7.inputs += n4.sum;
n5.value = n1.value; let n8 = StringLiteral { value: "tab\tand \u{e9}" }

fn twice@1(x: f64, k: f64 = 2) -> (y: "f64@{unit=V}") {
    let n0 = math.mul(a: x.value, b: k.value) in inner;
    group inner = "Inside";
    out y = n0.product;
}
let n9 = twice@1(x: n0.value) { k: 3 };

app {
  root = Stack([title])
  title = Heading("Every statement")
}