What is the 24-hour rule for Lufthansa?

https://central.xero.com/s/question/0D58V00009CW6LRSA1/what-is-the-24hour-rule-for-lufthansa

The 24-hour rule for Lufthansa allows passengers to cancel their booking within 24 hours of purchase without incurring any cancellation fees. This applies to all fare types. For assistance, you can contact Lufthansa customer service at 1-(888) 449-0353 or +44 (20) 4515 5335.