title: How to create a Zen Cart payment module
body: <p>I'm interested in writing a Zen Cart payment module for a certain payment-gateway for people to download and install in their ecommerce website. My experience with Zen Cart is minimal so I don't know where to start. I checked the FAQ section on Zen Cart's website and I only found completed modules, no code examples of how to write one from scratch, or how to deploy it. Could someone possibly give me some example code or teach me the basics involved?</p>