A tic-tac involves using an obstacle to "gain position" on another obstacle. For instance if you want to jump over a wall that is too high, but there is a bench you can jump to first, then you could "Tic-Tac" off the bench to clear the wall. A Tic-Tac can also be done off a wall to change direction or to clear an object that couldn't be cleared from the ground. This technique is commonly used to overcome a low object or gap, to vault a higher object, or leading into a cat leap.