As VR-HDB mentioned I believe (beyond normal) is the key phrase. Normal, i am assuming is any of the approved take-off flap settings for a particular aircraft. Most normal or approved take-off flap settings provide the most lift for the least ammount of drag. As in a fowler flap the flap moves aft increasing wing area thus lift during inital flap or take-off selection. As the fowler flap is moved to a selection beyond take-off, drag is increased considerably due to the more downward movement of the flap. Hence if a flap selection beyond normal were used this would result in more drag thus slower acceleration thus more runway used for a given non-normal flap setting.