Geez that was quick....
Seems you're always the one addressing my posts lately, step away from the forum, it can become highly addictive, I know from experience
Yeah I have that thread bookmarked, I hadn't read it all the way through yet though, so thanks for pointing to that post, very interesting & definitely something I'll try eventually.
But I was more interested in whether anyone knows more about what I've asked...

Cheers.