I’m not bringing it back but you can achieve the same by defining a new typeface/family and refer to a certain alternative of this typeface with the \classfont command. \definefontfamily[keywords][ss][DejaVu Sans Mono] \definefont[kword][\classfont{keywords}{Sans} at 13pt] \definehighlight[keyword][style=kword] \starttext Text font \keyword{keyword font} \stoptext

Bug: I prefer Euler font for math. This does not seem to work with the latest fonts interface.

The name of the font is “Neo Euler”:

\definefontfamily[mainface][rm][TeX Gyre Pagella]
\definefontfamily[mainface][mm][Neo Euler]

\setupbodyfont[mainface]

\starttext
Text font $math font$
\stoptext

You can also use the predefined typescript which has the name “eulernova”:

\definefontfamily[mainface][rm][TeX Gyre Pagella]
\definefontfamily[mainface][mm][eulernova]

\setupbodyfont[mainface]

\starttext
Text font $math font$
\stoptext

Wolfgang