clean up the underscore mess for the typeset formats so that subscripts

work in math displays (thanks to Bo Peng on the Doc-SIG)

Doc/tests/math.tex

@@ -0,0 +1,16 @@
+\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}