Bug, I use the facility because if I am surfing and hit interesting sites with lots of additional links, I found that I was getting lost - by opening links in new windows, whilst I would have many windows open, I could shift between them with ease.
Wcollins - you're a genius! How the hell did you find that little nugget??!! It works perfectly - problem solved.
Thanks to all of you who replied - yet again the Pprune officianados strike again!