That explains it. You were using the original hack, right? I've been using the implementation in Hijack without a bar and it made perfect sense. It just says "left" or "right" next to the delay time. If you delay one side, you know the image is moving toward the other.

The graph thing is hard ti make correctly for everyone. Having no graph is probably less confusing. Otherwise, the opposite of what you described would better indicate which way the image is being moved.

Bruno