Bit sad to see TJJ being jumped on for making a perfectly valid point.
You shouldn't assume you know what you don't as if you did you wouldn't. Finis.
Nigel,
I read the posts above. TJJ didn't ask or say anything that was unreasonable (let alone rude). So whatever it is that I apparently don't know, doesn't seem particularly relevant.
Your dismissal ("Finis") of my comment could be taken as rude.