Sometimes it is easier to see the plan with a “diagram” rather than the layout plan. This is a diagram showing the layout as a point to point (removing the doorway crossing). As you can see, you start at the “South yard” and work down the mainline switching various industries until you reach the interchange yard at the other end. There you can pickup/drop off, run around your train, and head back to the “South Yard”. I guess I should come up with some real names at some point….