come to think of it, contemporary layout restrictions did rob us of Fermat's own proof of his theorem. more seriously, yes, of course you're going to have to select a formatting system that can cope with what you need to express. equations are one thing. the things that never, ever work well for me in computer-assisted typesetting are drawing, unless they are very simple or i am very lucky. On 12 December 2011 10:28, John Stalker wrote: > In something like Mathematics