The `subset` keyword.

Property definitions

	# The `subset` keyword.
	var n_kwsubset: TKwsubset is writable, noinit

src/parser/parser_nodes.nit:1344,2--1345,46

	redef fun n_kwsubset=(node)
	do
		_n_kwsubset = node
		node.parent = self
	end

src/parser/parser_prod.nit:752,2--756,4