Many thanks, Manx. i'll have a look next time I'm round there. I'll heed your comments about postings on old threads in the future, but yesterday I persevered for ages to scan my postcard in order to attach it to a new thread, and I'm not going to move it after all that effort! I did a high-quality scan, only to find it exceeded the KB limit, so I downgraded, and downgraded, and downgraded.....!