* doc/emacs/text.texi (Words): Improve wording. Reported by
Marcin Borkowski <mbork@mbork.pl> in
http://lists.gnu.org/archive/html/emacs-devel/2018-01/msg00784.html.
@item M-@key{DEL}
Kill back to the beginning of a word (@code{backward-kill-word}).
@item M-@@
-Mark the end of the next word (@code{mark-word}).
+Set mark at the end of the next word (@code{mark-word}).
@item M-t
Transpose two words or drag a word across others
(@code{transpose-words}).