Question: when inside a SRC or EXPORT block, comment lines according to language in block

[Pedro Andres Aranda Gutierrez]

Hi,

Maybe I have missed it in the docs…
 I would like to be able to comment lines in a SRC or EXPORT block according to 
the programming language  used in said block.
Is that possible?

Example: in the following block, I’d like to put the cursor on ’This' to 
comment the line with LaTeX'es ‘%’ instead of Org’s ‘#'

#+BEGIN_EXPORT LaTeX
\begin{Arabic}
This should be commented
\end{Arabic}
#+END_EXPORT

Thanks, /PA