"Richard M. Stallman" <rms@gnu.org> writes:

> +@cindex keys stolen by window manager
> +@cindex window manager, keys stolen by
> +  On graphical displays, the window manager is likely to block the
> +character @kbd{Meta-@key{TAB}} before Emacs can see it.  It may also
> +block @kbd{Meta-@key{SPC}}, @kbd{C-M-d} and @kbd{C-M-l}.  If you have
> +these problems, we recommend that you customize your window manager to
> +turn off those commands, or put them on key combinations that Emacs
> +does not use.

I may be off-topic, but is there any warning somewhere in the doc
about C-M-<backspace> (the default magic key to kill X)?

-- 
 |      Michaël `Micha' Cadilhac     |  La culture c'est comme la confiture,  |
 |         Epita/LRDE Promo 2007     |      c'est meilleur avec du pain.      |
 |  http://michael.cadilhac.name     |           -- MOI59                     |
 `--JID: michael.cadilhac@gmail.com--'                                   -  --'