A wing section can be symmetric or asymmetric, and if it is the latter it is referred to as having camber, meaning that is lower (in the racecar context) surface is more curved than its upper surface. Racecar wings generally possess camber these days, although those early efforts were practically symmetrical. The line drawn through the midpoints of a wing, from the L.E. to the T.E. is known as the median line or camber line. The amount of camber present is sometimes defined as the maximum distance between the camber line and the chord line, expressed once more as a percentage or decimal fraction of the chord dimension, c. The location of maximum camber is defined in the same way as maximum thickness, also as a fraction of c.