Thanks Graham, I was worried I was missing something obvious so "happy" to find otherwise. In fact it's not a disappointment at all, participating in this great forum is always an absolute pleasure and often a welcome distraction from real-world problems and even disappointments elsewhere.

Yes agree entirely re the spellings, that's a trick I've learnt from this forum, it also saves my worn-out typing finger !

Many thanks again, J, and good-luck Aussie on your research.