\definefontfamily [helvetica] [ss] [Helvetica] [tf=style:Regular, bf=style:Bold, it=style:Oblique, bi=style:Bold Oblique] \starttext {\rm The quick brown fox jumped over the lazy dog {\it Optima}} \setupbodyfont[helvetica] {\rm The quick brown fox jumped over the lazy dog {\it Optima}} \stoptext The first 'Optima' in Latin Modern is Italic, the second one is not. Probably still a font cache issue. Gerben Wierda (LinkedIn https://www.linkedin.com/in/gerbenwierda, Mastodon https://newsie.social/@gctwnl) R&A IT Strategy https://ea.rna.nl/ (main site) Book: Chess and the Art of Enterprise Architecture https://ea.rna.nl/the-book/ Book: Mastering ArchiMate https://ea.rna.nl/the-book-edition-iii/