Absorb supports many payment gateways as well as PayPal, which is great, but there is no documentation on how to get any of these to work. I am assuming all of them have been tested, so if a sample configuration were provided for each gateway, that would help tremendously. This includes the setup directions for the gateway vendor. I get that these may change frequently, but right now I feel blind because even the Absorb back end is not documented, so I am not sure how the connection is configured on the back end.