OK, I'm certainly not going to stand in your way, especially when you're completely aware that your way of using OptF is slightly controversial. Not to mention that we like thinking outside the box on this forum, we agreed earlier. wink Thank you for a nice explanation and definitely good luck!

I'd very much appreciate jcl's view on your approach, but it seems that he has already found the beach Sundance and I were talking about few days ago. Oh, well... grin