Hello,

I have a tex file

\setupinteraction[state=start,focus=standard]
\definereferenceformat[eqref][left=(,right=),style=normal,color=blue]

\starttext

With \CONTEXT\ we could write maths. Equations can be referenced. For
example, see \eqref[eqn:famous-emc].

\placeformula[eqn:famous-emc]
\startformula
E = mc^2
\stopformula
with
\placeformula[eqn:def-m]
\startformula
m = \frac{m_0}{\sqrt{1-\frac{v^2}{c^2}}}
\stopformula

\stoptext

[image: enter image description here] <https://i.sstatic.net/KnsIF4bG.png>

I would like to turn off the numbering of equations that are not referenced.
The corresponding option in LaTeX is \mathtoolsset{showonlyrefs}. An answer
has been provided here <https://tex.stackexchange.com/a/751366/161639>. I
hope that this functionality could be made into an option in the next
release of ConTeXt.

Best regards,

Dung