As my wife had been putting my manuscript into PDF form for the upcoming convention in Portland, I realized that she was putting each chapter title on the far left. I told her I thought they should be centered. I pulled several books off my shelf and showed her that in all examples, the chapter titles were centered. She then showed me in one of the writer's books I had asked her to look at in preparation for her formatting, and the one example of how it should look after we're done shows the chapter title, sure enough, on the left side of the page. What's the right or wrong of this?