The following code: \enabletrackers[context.trace] %\usemodule[article-basic] \starttypescript [sans] [optima] \setups[font:fallback:sans] \definefontsynonym [Sans] [file:Optima.ttc(Optima Regular)] [features=default] \definefontsynonym [SansBold] [file:Optima.ttc(Optima Bold)] [features=default] \definefontsynonym [SansItalic] [file:Optima.ttc(Optima Italic)] [features=default] \definefontsynonym [SansBoldItalic] [file:Optima.ttc(Optima Bold Italic)] [features=default] \stoptypescript \definetypeface [optima] [ss] [sans] [optima] [default] \setupbodyfont [optima] \starttext \startMPpage[instance=doublefun] picture pic; pic := textext("\definebodyfont[14.9pt][rm][default=Regular at 14.9pt]\switchtobodyfont[14.9pt]\setupinterlinespace[16.9pt]\framed[align=center,frame=off,offset=none,width=335.350bp]{\colored[r=0.000, g=0.000, b=0.000]{\rm (Artifact)\\}}"); draw pic scaled 1.13; \stopMPpage \stoptext Produces nice Optima at 14.9pt without \usemodule[article-basic] (as above), but with \usemodule[article-basic] included, the output becomes some serif (modern?) font, but only if I use nonstandard font sizes. Took me some time to hunt this one down. I actually don’t know what article-basic does for me (I started out with an example given to me by Hans) and I don’t need it now, but I might need it later in combination with my own stuff G