# Prepend a child to `self`
	fun prepend_child(child: MdNode) do
		child.unlink
		child.parent = self
		if first_child != null then
			first_child.as(not null).prev = child
			child.next = first_child
			first_child = child
		else
			first_child = child
			last_child = child
		end
	end