What is the 24 hour rule for Lufthansa?

https://community.articulate.com/discussions/building-better-courses/what-is-the-24-hour-rule-for-lufthansa-customer-service24-7

Lufthansa follows the 24-hour rule, which allows passengers to make changes to their bookings or cancel their Flights within hours of purchase without incurring any penalty fees. Lufthansa’s 24-hour rule allows passengers to make changes to their bookings or cancel their flights by phone. Lufthansa offers a 24 hour rule, allowing you to change.