I apologise for butting in moeee.

I do not consider myself an imbecile or ignorant person but for the life of me, having followed Woof's posting I have absolutely no idea what he is on about?

I'm sure he is so clear in his mind about it that he can't imagine anyone else not understanding it.

As you stated (paraphrasing here), "if you want to help be clear about it!"

I'm trying to analyse my selections to see if I can come up with something useful.

Good luck