Hi, On http://wiki.contextgarden.net/Bold_Math section "Mixing Math Fonts" I tried to mix in the Asana Math font for the missing integral symbols. 0x222B normal integral \int 0x222C double integral \iint 0x222D triple integral \iiint 0x222E contour integral \oint 0x222F surface integral \oiint 0x2230 volume integral \oiiint However I don't want to switch to the whole Asana Math, because the math looks ugly, just want to get to the missing symbols in math mode. To all the experts on the list, please be patient with me. I am just some one who documents math and physics texts but I am not a programmer or Tex wizard. My knowledge of Context is ok, but still beginners level. I really don't know how to get it to work and it's stopping me. Using the latest Context/Luatex version ConTeXt version 2010.06.20 00:01 LuaTeX date stamp 2010061909 I tried a modified version \starttypescript [math] \definefontsynonym [MathSymbol] [Asana-Math] \definefontsynonym [MathRoman] [ComputerModernMath-Roman] \definefontsynonym [MathExtension] [ComputerModernMath-Extension] \stoptypescript \usetypescript[math] \starttext \startlines 0x222B normal integral $\int_{a}^{b}$ 0x222C double integral $\iint_{a}^{b}$ 0x222D triple integral $\iiint_{a}^{b}$ 0x222E contour integral $\oint_{a}^{b}$ 0x222F surface integral $\oiint_{a}^{b}$ 0x2230 volume integral $\oiiint_{a}^{b}$ 0x2A0C space time $\iiiint_{a}^{b}$ \stoplines This file has been typeset on \currentdate{} at \currenttime, with \doifmodeelse{mkiv} {mkiv, LuaTeX version \the\luatexversion, LuaTeX revision \luatexrevision, (LuaTeX date stamp \luatexdatestamp), using the command: \par \type{context test-luatex.tex}\par} {mkii, using the command: \par \type{texexec test-luatex.tex}\par} \blank ConTeXt version \contextversion. \stoptext