Nice concise reply, thanks!
One of these fine days I'll get round to writing something, trouble is I'm not particularly imaginative :-)
I may take you up on your offer of an explanation when I next come across something that is confusing me, be prepared for some basic questions, or, hey!, maybe I'll formulate my questions into posts so all can benefit from any replies.... now that's got me thinking !
Exactly my point. Imagination is overrated :)
Conversation is underrated!