Hi Hans, Thank you for the new upload and the rewriting of the math fonts stuff, thanks also to Mikael S. I did several tests on real size math projects and did not notice important issues. The two issues I noticed, show up mainly with LucidaOT, and are explained in the following example: \setupbodyfont[lucidaot] \definemathstackers[MySymbol] [voffset=-1.4\mathexheight, % -.8\mathexheight hoffset=\zeropoint, mathclass=ord, topoffset=.3\mathemwidth, % poor man's italic correction middlecommand=\mathematics] \define[1]\interior{\mathover[MySymbol]{176}{#1}} %2218 U+00B0 \definemathcommand [Argmin] [limop] {\mfunctionlabeltext{ArgMin}} \definemathcommand [liminfbar] [limop] {\underline{\mfunctionlabeltext{lim}}} \definemathcommand [limsupbar] [limop] {\overline{\mfunctionlabeltext{lim}}} \starttext If $A \subset {\Bbb R}$ is a set, its interior is denoted by $\interior{A}$. Can one have the circle over $A$ slightly bigger (probbaly this is font dependent)? The built-in commands $\liminf$ and $\limsup$ do not work properly with LucidaOT (I tried other fonts and there they are fine): \startformula x_{n} := (-1)^n, \quad\mbox{then} \quad \liminf_{n \geq 0}x_{n} = -1, \quad \limsup_{n\geq 0} x_{n}= +1. \stopformula The commands defined above, \type{\liminfbar} and \type{\limsupbar}, behave correctly in all fonts I tested: \startformula x_{n} := (-1)^n, \quad\mbox{then} \quad \liminfbar_{n \geq 0}x_{n} = -1, \quad \limsupbar_{n\geq 0}x_{n} = +1, \stopformula but not the command \type{\Argmin} (which does not show Argmin in any font…) \startformula \Argmin_{x\in {\Bbb R}} (x^2 - x + 1) = {1 \over 2}. \stopformula \stoptext Best regards: Otared