You still can't use them in production since they are rejected by texvcjs
cf.
https://en.wikipedia.org/wiki/Newton's_law_of_universal_gravitation#Gravitational_field
:<math> \int\!\!\!\!\int_{\partial V}\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\;\;\;\bigcirc\,\,\mathbf{g(r)}\cdot d\mathbf{A} = -4\pi G M_{enc} </math>
The authors were quite creative to adjust to the missing functionality. But that's not really what we want.