Hi,

On 5 Jul 2011, Martin Gross wrote:
> When the cua-mode is enabled and I try to select a region to comment
> it via "C-c ;" the selection is just copied, but not commented.  With
> auctex-mode I use "C-c C-c ;" to do this and it works well.  ¿How can
> I get the same behavior on org-mode?

The canonical version is using "M-;" which is bound to `comment-dwim'
and it works across all emacs modes not just in LaTeX-mode.

Michael