org-latex-text-markup-alist is a variable defined in `ox-latex.el'.
Its value is ((bold . "\\textbf{%s}")
(code . verb)
(italic . "\\emph{%s}")
(strike-through . "\\sout{%s}")
(underline . "\\uline{%s}")
(verbatim . protectedtexttt))
underline . "\\uline{%s}" -- According to [1],
~~
\uline
Underlines text. Requires ulem package. See Formatting.
~~
Is "ulem" one of the LaTeX export default packages? I don't see that it is.
If not, should org's default underlining command depend on a package that
is not activated by default?
(There is no reference to -markup- anything in my .emacs, so I'm quite sure
I haven't customized this variable.)
hjh
[1] http://en.wikibooks.org/wiki/LaTeX/Command_Glossary#U