If this update is valuable to you, please consider paying a token ($3.00 US) donation each year. You are welcome to download the update for free; donation is completely voluntary. My main reason for requesting donations is not to make money but rather to get a solid estimate of the number of people who are serious about continuing to use AviSys, and to track that number from year to year. The payment goes through PayPal but at the bottom of the form you can click “Pay with Debit or Credit Card” if you don't have a PayPal account.