Thanks guys - My thanks message didn't register yesterday, or again today, so I have switched to "Opera".
Yes, I stumbled across "Message" in the wikki, I haven't tried it yet, but I will. I see Graham agrees I will have to use the "While Is Moving" line. I didn't really want to, but I can't see any alternative. At least I have got round to having my labels on the various DRO's changing according to their function in a particular program. Before I had to remember them all.