Many thanks, dannyk13 and scorpiojo. I must have had an awful blind spot not to solve that item - particularly as I had the linked solution as "bubble". Oh dear.
Scorpiojo - what does the message replacing your icon mean? Why should you wish to disappear?
I suppose I can just about follow your standing joke. Please believe me when I say that I would never intentionally ignore contributions from two of the best Answerbank solvers in the business!