John Kenyon wrote:
If your level of expertise is such that you can identify a lack of
knowledge, whey don't you set us all straight then?


It isn't rocket science. Even you could probably learn how it works
with just a little effort.

But that's the problem. You aren't prepared to make that small
effort. You expect someone else to do it for you - in this case me.

Well, I'm so very sorry to disappoint you. ;-)