I had to look up Apple’s documentation on the Responder Chain once again tonight. SplitViewControllers and overall view containment are great features, but are requiring me to move my methods around a little bit. I am feeling good about my SwiftoDo Desktop rewrite, though. I am almost done coding the core functionality. Just a few more big features left to code before I put more work into user preferences and, basically, making everything super nice and customizable.