Surfers' skills are tested by their ability to control their board in difficult conditions, riding challenging waves, and executing maneuvers such as strong turns and cutbacks (turning board back to the breaking wave) and "carving" (a series of strong back-to-back maneuvers). More advanced skills include the "floater" (riding on top of the breaking curl of the wave), and "off the lip" (banking off the breaking wave). A newer addition to surfing is the progression of the "air," whereby a surfer propels off the wave entirely up into the air and then successfully lands the board back on the wave.