Hello, I encountered a strange effect. Let's have a code that generates the same math, firstly by Ctx and secondly by Lua: --- \starttext \startformula M_{t,WnT} = 1000 \stopformula \startluacode context.startformula() context("M_{t,WnT} = 1000") context.stopformula() \stopluacode \stoptext --- You can see the result - the space between "W" and "n" in lower index is smaller when generated (natively) by Ctx than that in math generated by Lua. (The latter case may affect a bit "disturbingly" to the reader.) It seems also that space between (subscript) "T" and "=" varies. So why these differences? How to avoid the extra-space when Lua generates math subscript? Best regards, Lukas -- Ing. Lukáš Procházka [mailto:LPr@pontex.cz] Pontex s. r. o. [mailto:pontex@pontex.cz] [http://www.pontex.cz] Bezová 1658 147 14 Praha 4 Tel: +420 244 062 238 Fax: +420 244 461 038