Nicolas, > Isn't it a LaTeX limitation? What would the correct LaTeX code be in > that case?
this seems to be something in beamer rather than inside "vanilla" latex.
for example, the following foo.tex file fails:
----
\documentclass{beamer}
\begin{document}
\section{\underline{is}?}
\end{document}
----
but, changing to \documentclass{article} makes things work.
i'm not a beamer expert, so i can't say what is going on.
cheers, Greg
