:$ f()
	:a = 1

	|{a}

	a = a + 1

	:$ g
		:a = 1

		|{a}

		a = a + 1

	:$ h()
		:a = 1

		|{a}

		a = a + 1

	|\> depth 2, unscoped:

	g!

	g!

	g!

	|\> depth 2, scoped:

	h!

	h!

	h!

|depth 1:

f!

f!

f!