Hi, tonight I installed the todays built of Context in a minimal tree. - No problem so far! Bases on the recent discussions concerning a glyph I fetched the latest font-zips from the polish site. After installing everything it appeared, that a wrong set of mapfiles for iwona is loaded. I found that the correct version of the typescript is in the type-map.tex already. So what needs to be done is to switch from the set map-files like "iwona-rm.map" to "rm-iwona.map". Further I believe that there might still be a bug in the encoding (?) for the heavy variants: If I compile the attached file, I find that "sin^2" is regular instead of heavy. - (Heavy for the text is not setup, so it comes out as roman-regular fall back i.e. latin-modern.) Thanks Taco for this test utility! Willi % Test file for Iwona Math by Taco Hoekwater \setupoutput[pdftex] \loadmapfile[iwona-texnansi.map] \loadmapfile[sy-iwona.map] \loadmapfile[rm-iwona.map] \loadmapfile[mi-iwona.map] \loadmapfile[ex-iwona.map] \starttypescript [math] [iwona-light] [default] \definefontsynonym [Iwona-Math-Letters-Light] [rm-iwonal] \definefontsynonym [Iwona-Math-Letters-LightItalic] [mi-iwonali] \definefontsynonym [Iwona-Math-Symbols-Light] [sy-iwonali] \definefontsynonym [Iwona-Math-Extension-Light] [ex-iwonal] \stoptypescript \starttypescript [math] [iwona] [default] \definefontsynonym [Iwona-Math-Letters-Regular] [rm-iwonar] \definefontsynonym [Iwona-Math-Letters-RegularItalic] [mi-iwonari] \definefontsynonym [Iwona-Math-Symbols-Regular] [sy-iwonari] \definefontsynonym [Iwona-Math-Extension-Regular] [ex-iwonar] \stoptypescript \starttypescript [math] [iwona-medium] [default] \definefontsynonym [Iwona-Math-Letters-Medium] [rm-iwonam] \definefontsynonym [Iwona-Math-Letters-MediumItalic] [mi-iwonami] \definefontsynonym [Iwona-Math-Symbols-Medium] [sy-iwonami] \definefontsynonym [Iwona-Math-Extension-Medium] [ex-iwonam] \stoptypescript \starttypescript [math] [iwona-heavy] [default] \definefontsynonym [Iwona-Math-Letters-Heavy] [rm-iwonah] \definefontsynonym [Iwona-Math-Letters-HeavyItalic] [mi-iwonahi] \definefontsynonym [Iwona-Math-Symbols-Heavy] [sy-iwonahi] \definefontsynonym [Iwona-Math-Extension-Heavy] [ex-iwonah] \stoptypescript \starttypescript [math] [iwona-heavy] [name] \definefontsynonym [MathRoman] [Iwona-Math-Letters-Heavy] \definefontsynonym [MathItalic] [Iwona-Math-Letters-HeavyItalic] \definefontsynonym [MathSymbol] [Iwona-Math-Symbols-Heavy] \definefontsynonym [MathExtension] [Iwona-Math-Extension-Heavy] \stoptypescript \starttypescript [iwona,iwona-light,iwona-heavy,iwona-medium] [texnansi,ec,8r,uc] \definetypeface[\typescriptone][rm][serif][modern] [default][encoding=\typescripttwo] \definetypeface[\typescriptone][ss][sans] [\typescriptone] [default][encoding=\typescripttwo] \definetypeface[\typescriptone][tt][mono] [modern] [default][encoding=\typescripttwo] \definetypeface[\typescriptone][mm][math] [\typescriptone] [default][encoding=\typescripttwo] \stoptypescript \usetypescript[iwona][texnansi] \usetypescript[iwona-light][texnansi] \usetypescript[iwona-medium][texnansi] \usetypescript[iwona-heavy][texnansi] \def\test#1% {\switchtobodyfont[#1,ss]\noindent \ss #1 $$\int_{0}^{\infty} \sin^2 x {\rm d}x = \sqrt{1/\alpha \cup\beta}$$\blank\input ward} \setupbodyfont[iwona,ss,12pt] \starttext This is iwona, \fontname\font \blank \test{iwona-light} \blank \test{iwona} \blank \test{iwona-medium} \blank \test{iwona-heavy} \stoptext