Thank you both for your response. Crofter, I did check on AB for an answer but did not find one (and still cannot find one on page 2) The eyes must be failing along with the brain!
Mea Culpa Crofter - have just found the answer on page 3, which was the old page 2. However, when I searched the site no reference came up. Thanks again. E.
That's OK Elspeth - I was only making it clear that I was not claiming the solution, but it "belonged" to someone else! I have no problem repeating an earlier answer. Regards