Add `\usepackage[tracing]{luamml-demo}` to print MathML to the terminal or `\usepackage[files]{luamml-demo}` to generate separate files with MathML output.
Alternatively it can be used with latex-lab to automatically integrate with tagging infrastucture.
<!-- Also see a [`tagpdf` experiment using this to tag PDF formulas](https://github.com/u-fischer/tagpdf/blob/develop/experiments/exp-mathml-lua.tex). -->
<!-- If you are very brave you can also try running `pdflatex test_pdf` and afterwards run `./pdfmml.lua test_pdf.lua` to get pdflatex formulas converted. -->
