How do spill holes affect parachutes?

Spill holes are strategically placed openings in parachute canopies that allow air to escape, helping to regulate descent speed and stability. By controlling the airflow, spill holes prevent the canopy from becoming over-inflated, which can lead to instability or a dangerous oscillation. They also enable better maneuverability during descent, allowing parachutists to steer more effectively. Overall, spill holes enhance the parachute's performance and safety during landing.