1 files changed, 12 insertions, 0 deletions

diff --git a/doc/emacs/buffers.texi b/doc/emacs/buffers.texi
index 2eb837f1510..c70e583b9ed 100644
--- a/doc/emacs/buffers.texi
+++ b/doc/emacs/buffers.texi
@@ -411,6 +411,18 @@ Remove all flags from the current line, and move down
 @kindex DEL @r{(Buffer Menu)}
 Move to the previous line and remove all flags on that line
 (@code{Buffer-menu-backup-unmark}).
+
+@item M-@key{DEL}
+@findex Buffer-menu-unmark-all-buffers
+@kindex M-DEL @r{(Buffer Menu)}
+Remove a particular flag from all lines
+(@code{Buffer-menu-unmark-all-buffers}).
+
+@item U
+@findex Buffer-menu-unmark-all
+@kindex U @r{(Buffer Menu)}
+Remove all flags from all the lines
+(@code{Buffer-menu-unmark-all}).
 @end table
 
 @noindent