The image shows how I organise my Usenapp. But if Usenapp is restarted, it doesn't remember where the left-hand window was on the screen. On restart, it puts it, in fact, at the location of the right-hand window; also it applies the size of the right-hand window to this newly-opened left-hand window. And it doesn't remember at all that the right-hand window was open. So I have to do a bit of re-shuffling of windows whenever Usenapp restarts.