Thanks so much for the info. Wow, I never thought to think about the seven seconds. Of course the count would have continued until the yips began. So let me summarize what I think you have said. I would ignore the fact that there are only three dots in print format and would put the ellipsis with a period (15.3a). Then start the new sentence. This is what I had in my mind to do, but I wasn't sure about going against the print.