What does it mean if my VOA extension stamp says I need a re-entry permit before leaving Thailand?

A user sought clarification about receiving a stamp for a re-entry permit after a 30-day extension on a Visa on Arrival (VOA). Community comments clarified that the stamp indicates a reminder to obtain a re-entry permit if planning to leave Thailand and return within the validity of the visa. However, it's noted that a 30-day extension on a VOA typically isn't standard, as extensions generally max out at 7 days. Despite the confusion, obtaining a re-entry permit is not mandatory unless one wishes to use the remaining days after leaving.