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This is the most crucial point of your vault. For your first few runs, you should hold the pole above your head with your arms outstretched and be ready to place it directly in the center of the box, on the back edge. As you become more comfortable, you can rest the pole over your shoulder or hold it next to your waist, raising it above your head to plant it as you approach the box. This is the beginning of your jumping motion as you are pushing off of the ground and using the pole as leverage while you pull on it. Your leg on the non-dominant side of your body will still be on the ground as you push up, with your toe pointed. This will give you lift and the pole will begin to bend. Your lower arm should continue pushing on the pole to keep your body moving up and forward. The leg that was pointed will help your body move into an upside-down position. Keep pushing with your lower hand to get yourself as close to upside-down as possible. Bring your dominant hand, which should still be toward the top of the pole, down to your hip in a pulling motion on the pole. Use your core muscles to keep your body moving and keep you close to the pole. Initiate the turn by turning your dominant foot to the inside.  As you pull your body should naturally turn around the pole so that your belly is now facing the pit. At this point, you will be completely upside down. Try to keep your legs straight above your head while you push off of the pole. Let go of the pole as you feel yourself falling away from your maximum height.  Letting your legs fall down too quickly can take height off of your jump. Be careful not to let go too quickly, as you can fall headfirst into the box. It’s better to hold on for too long while you are learning, rather than risk an injury.

Summary:
Plant the far end of your pole at the inner edge of the box as you approach. Drive the knee of your dominant leg into the air. Swing your non-dominant leg up in the air as the pole bends. Move your top arm in a pulling motion to give yourself additional height. Turn your hips around the pole. Push off of the pole when you are at your maximum height.