Hello David and Peter,
Originally Posted by DavidR
Peter, I appreciate Bill Warren's reply and think it supplements the video's explanation helpfully--although I must say that the video does a good job of clearing things up (I watched it when I first purchased BW9, but with time, things become rusty!).
David, actually I think Peter and I were asking the same question. Looking at what he wrote afterwards and Glen Weaver's reply confirms that in my mind. Again, this is a nice tool, but it takes a little bit of mastering to get a grasp of its details.