master 006d0ae: Mention `M-S-x' in the Emacs manual.

[Lars Ingebrigtsen]

branch: master
commit 006d0ae396de59bce95bc0a3ff4648caee87babd
Author: Lars Ingebrigtsen <larsi@gnus.org>
Commit: Lars Ingebrigtsen <larsi@gnus.org>

    Mention `M-S-x' in the Emacs manual.
    
    * doc/emacs/m-x.texi (M-x): Mention `M-S-x' in the Emacs manual.
---
 doc/emacs/m-x.texi | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/doc/emacs/m-x.texi b/doc/emacs/m-x.texi
index c51f10a..d35a835 100644
--- a/doc/emacs/m-x.texi
+++ b/doc/emacs/m-x.texi
@@ -58,6 +58,14 @@ Modes}).  By default, no commands are excluded, but you can 
customize
 the option @code{read-extended-command-predicate} to exclude those
 irrelevant commands from completion results.
 
+@kindex M-S-x
+  Conversely, Emacs can exclude all commands except those that are
+particularly relevant to the current buffer.  The @kbd{M-S-x} (that's
+``meta shift x'') command works just like @kbd{M-x}, but instead of
+listing all (or most) of the commands Emacs knows about, it will only
+list the commands that have been marked as ``belonging'' to the
+current major mode, or any enabled minor modes.
+
   To cancel the @kbd{M-x} and not run a command, type @kbd{C-g} instead
 of entering the command name.  This takes you back to command level.