I noticed that Open Office 1.1 Math works bad with sum sign: if i enter the formula: from{x} to{y} i the sum sign isn't displayed correctly, but a pair of inverted question marks (¿) appears: ¿x¿yi I did some reading and this seem to be a common problem. Any idea? Thnx PAolo -- if you have a minute to spend pleas visit my photogrphy site: http://mypic.altervista.org