The levels concept is designed to create both a horizontal and vertical stretching of zone and man coverages. The play calls for the tight end to climb to a depth of 10 to 12 yards and run a dig/in route to the inside. The two flankers to the strong side of the formation will both run 5 yard in routes. This creates a hi/lo situation for the quarterback to read. If the defense takes away the tight end go underneath to either of the two shorter in routes. And vice versa if the defense jumps the two shorter routes underneath, the tight end on the dig route is a viable option for the quarterback.