What does a natural sign (A natural sign has two vertical lines connected by two horizontal lines. A natural sign has two vertical lines connected by two horizontal lines. The top horizontal begins two-fifths of the way down the left vertical line and travels right about one-third the length of the vertical line at a slight upward angle to connect with the top of the right vertical. The bottom horizontal begins about two-fifths of the way down the right vertical line and travels left about one-third the length of the vertical at a slight downward angle to connect with the bottom of the left vertical.) do to a note