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

% \definefontfamily[mainface][rm][pagella]
% \definefontfamily[mainface][mm][eulernova]
% \setupbodyfont[mainface]

% \usetypescriptfile[euler]
% \setupbodyfont [pagella-with-euler]

% \usetypescriptfile[euler]
% \setupbodyfont [euler-with-pagella]

% \setupbodyfont [eulernova]

\starttext
    Text font $math font$ and $\sin(t) = \int_{0}^t \cos(\theta)d\theta$ and [[$hij$]]
\stoptext
