I've been using #AnnotatedEquations in my recent papers. I think it really adds to the readability and understanding of the math.

Here are some examples. It uses #tikz in #latex.

Let me know if you like it. Happy for any feedback.

@sibin @crazy4pi314 and I did something similar to this manually in Inkscape for our book, and seems like it was really helpful for readers. Awesome to see an easier way to do it using LaTeX!
@cgranade @crazy4pi314 oh I’m sure that was lovely.