SEA>An interesting talk by Geoffrey Morley for MathJam 2013.http://www.squaring.net/downloads/GHMPSKB1.pdf He's asked me how to include the umlaut for Möbius in postscript, any ideas? <Stuart Anderson It took me a while to figure out that "←8.5→" dimensioning on the last figure of p6. --rwg Hmm, US business letters? Italian movie? We need Numbers Aplenty extended to rationals.