SPARKEY - Respect!!! I wish a few more Pilots would ask questions especially in this forum (R/T frequencies tend to be a bit busy nowadays to chat). If more Crews understood what we on the ground are trying to achieve and how we do it, it would make all our lives a bit smoother. Never, EVER be embarrassed to ask a question, there are lots of friendly ATCOs here who are only to eager to help you out with your understanding and, of course, we will ask questions in return to fill the gaps in our knowledge. Please make this known as much as possible among your colleagues and TELL THEM ALL ABOUT PPRUNE - this is just the sort of thing that it is designed for. Once again, THANK YOU for your interest!