Help - using this website

This website has been designed to allow you to change the size of the text to enable you to see it at a size that is convenient for you.  At the top-left of each page you'll see: A A A A A   We suggest that you click on each in turn to obtain the one that is the most convenient. The last option is a large-font with white text on a black background, that should assist some people who have particular eye-sight difficulties.   If you have any observations or suggestions regarding this web site, please contact the Webmaster via the   Contact us   page.