Do I need to show a return flight booked within 60 days for a METV six month visa in Thailand?

The user inquires about the requirement of showing a return flight when applying for a METV (Multiple Entry Tourist Visa) with the intention of traveling to Thailand for six months. They ask whether it's sufficient to have a return flight booked for six months later, or if they need to provide evidence of a return flight within 60 days.