Hi here. I was trying to use my own math font in Mark IV, inside distribution TeX Live 2013, using typescript, but failed. The way I am thinking, I might use an fallback way. For most of the math symbols, I would use the provided palatino stuff, but for MathRoman and MathItalic, I'd like to use the same font as of normal text, let's say Minion Pro. As I'm looking into a normal typescript file, I thought of a few options: First of all, just overwrite the Palatino typescript, like follows: \starttypescript \definefontsynonym [MathRoman] [name:minionproregular] \definefontsynonym [MathItalic][name:minionproit] \stoptypescript It gives out "Math error: parameter \Umathquad\displaystyle is not set ..." Another way I'm trying, is to use some fall back mode. \starttypescript [math] [palatino] \setups[font:fallback:math] \definefontsynonym [MathRoman] [name:minionproregular] \definefontsynonym [MathItalic][name:minionproit] \stoptypescript It also doesn't work. The result was same as the previous. And I also tried \starttypescript [math] [palatinofb] \usetypescript[math][palatino] \definefontsynonym [MathRoman] [name:minionproregular] \definefontsynonym [MathItalic][name:minionproit] \stoptypescript This also makes no difference. Inspired by http://tex.stackexchange.com/questions/150566/minionpro-including-math-in-co..., I also tried the \definefallbackfamily, it turn out to be an undefined control sequence. In the main typescript, I uses \definetypeface[MinionPro-Mixed][mm][math][palatino][default] So I cannot find out how to fulfill my need. I guess there might because of a missing map file, but for a roman font, do we need any? Since the following serif definition works fine: \definefontfeature[zh][mode=node,script=hang,lang=zhs] \starttypescript [serif] [MinionPro-Mixed] \definefontfallback[Serif] [name:minionproregular][0x0000-0x0400][force=yes] \definefontfallback[SerifItalic] [name:minionproit] [0x0000-0x0400][force=yes] \definefontfallback[SerifBold] [name:minionprobold] [0x0000-0x0400][force=yes] \definefontfallback[SerifBoldItalic][name:minionproboldit] [0x0000-0x0400][force=yes] \definefontsynonym [Serif] [name:fzshusongz01][fallbacks=Serif] [features=zh] \definefontsynonym [SerifItalic] [name:fzheib01][fallbacks=SerifItalic] [features=zh] \definefontsynonym [SerifBold] [name:fzheib01][fallbacks=SerifBold] [features=zh] \definefontsynonym [SeriBoldItalic] [name:fzheib01][fallbacks=SerifBoldItalic] [features=zh] \stoptypescript As I've seen, normally, a fallback definition of typescript is used in serif/sans/mono, but there comes no successfull example for fall back of math font. Also, there is fall back for a font, but not an entire typescript. And build a new math font is obvious beyond my competent. So how to deal with this problem? Is there a solution? Regards, 南京大学 现代工程与应用科学学院 2013级 罗晨星 Luo Chenxing ————————————— chenxing.luo@gmail.com