In this course, TOFF and TROT serve as a practical examples to demonstrate real-world XenForo addon development. While simple in scope, TOFF and TROT cover the essential features of a typical addon: admin options, class extensions, event listeners, and template modifications. It’s not the goal of the course, but a guiding example—helping you apply each concept in a working context as you learn to build robust, well-structured XenForo addons from scratch.