We've had a few emails noting that the article does not match the header.
Why this is so is a mystery to me and given the timelapse I'm not sure I can come up with a solution other than deleting the thread, which I do not want to do. It's a good thread, it's a good article. Only the header is incorrect.
If it can be sorted, it will be.
Ah..hang on...here's a thought.......
"Said Hamlet to Ophelia, I'll draw a sketch of thee.
What kind of pencil shall I use? 2B or not 2B?” Spike Milligan