ref: 094fc8b15f98807833143e29f1f7d36a1ca4b28c
dir: /sys/src/cmd/python/Doc/tests/math.tex/
\documentclass{howto} \title{Test of python.sty with math} \begin{document} \maketitle \section{Subscripts in Math Mode} This contains an inline formula containing a subscript: $H_20$. This display doesn't make sense, but contains a subscript as well: $$\sum_1^2 = a_x$$ \end{document}