*The custom gateway POST data is posted from the users browser when they click the pay button.
*This means the POSTED data will be visible in the page source code and should not contain any secret or private data.
= Confirmation Page =
The payment gateway should show the payment status to the booker confirming the success or failure of their payment.
After the booking (and sending the webhook to notify of payment success) the booker can be returned to the page booking.php?page=bookconfirmed which will show the booking they just made.
= Webhook to notify of payment status =