P Smith, it would be very helpful if you added a non-technical description to your technical explanations. Also, the use of abbreviations that we are not familiar with doesn't help either. The vast majority of us have almost no idea about what it is that your talking about. It makes your postings nearly irrelevant to the discussion except to a very select few. In other words, you can't teach advanced mathematics to a class that hasn't learned the basics yet. We want to join you in your world, but you have to let us in first.