[NTG-context] How to scale math with text?

[Alan Braslau]

On Tue, 5 Jun 2018 10:37:12 +1200
Henri Menke <henrimenke at gmail.com> wrote:

> Dear list,
> 
> probably I'm just missing something obvious.  How can I scale the
> math font size to match the text font size locally?  In the following
> MWE text is scaled to 10pt but math still appears at 12pt.
> 
> \starttext
> {\tfx ABC $DEF$ GHI\par}
> \stoptext

I believe that the "proper" way would be:

\starttext

\startparagraph [style=small]
ABC $DEF$ GHI
\stopparagraph

\stoptext