Ironically Bonnie Hunter has information regarding this topic on YouTube, I watched her quilt cam live and she was explaining this in a way that I think will clear things up for those of us who have questions about this. I think it would be simpler for you to watch it than to have any misinformation or even misinterpretation being that she is a designer. It wasn't the last quilt cam but the previous one you don't even have to watch the whole thing to get what she is talking about. I only watched a bit maybe half hour or so then moved on, I know she was making a four patch in a square.