> I use _underlined_ to get a line under `underline' in html.
> But the character `_' is known as math subscript of latex (just as in \
> sum_0^100 ).
>
> I want to use both underline and math subscript simultaneously.
As Bernt explained in his reply, the exporter should distinguish between
the two automatically. If you encounter a specific instance in which
this does not work, then please supply the source file.
Have you read the following sections of the manual?
http://orgmode.org/manual/Subscripts-and-superscripts.html#Subscripts-and-superscripts
http://orgmode.org/manual/LaTeX-fragments.html#LaTeX-fragments
If you want to turn off subscript except when you explicitly request it,
you can find full instructions in this response to one of your previous
posts:
http://article.gmane.org/gmane.emacs.orgmode/16797
> I find some of you are not familiar to latex syntax .
An inability to decipher cryptic mailing list questions does not
indicate a lack of comprehension of their purported subject matter.
- Matt