@subsection Auto Reverting the Buffer Menu
If auto-reverting of non-file buffers is enabled, the Buffer Menu
-automatically reverts every @code{auto-revert-interval} seconds,
-whether there is a need for it or not. (It would probably take longer
-to check whether there is a need than to actually revert.)
+(@pxref{Several Buffers}) automatically reverts every
+@code{auto-revert-interval} seconds, whether there is a need for it or
+not. (It would probably take longer to check whether there is a need
+than to actually revert.)
If the Buffer Menu inappropriately gets marked modified, just revert
it manually using @kbd{g} and auto-reverting will resume. However, if
only the text within the region.
@item C-c C-w
-@findex diff-refine-hunk
-Refine the current hunk so that it disregards changes in whitespace
-(@code{diff-refine-hunk}).
+@findex diff-ignore-whitespace-hunk
+Re-diff the current hunk, disregarding changes in whitespace
+(@code{diff-ignore-whitespace-hunk}).
@item C-x 4 A
@findex diff-add-change-log-entries-other-window
previous undo commands, use @kbd{M-x undo-only}. This is like
@code{undo}, but will not redo changes you have just undone.
+@c What about @kbd{M-x revert-buffer}? --xfq
If you notice that a buffer has been modified accidentally, the
easiest way to recover is to type @kbd{C-/} repeatedly until the stars
disappear from the front of the mode line (@pxref{Mode Line}).
@item \(?: @dots{} \)
@cindex shy group, in regexp
specifies a ``shy'' group that does not record the matched substring;
-you can't refer back to it with @samp{\@var{d}}. This is useful
-in mechanically combining regular expressions, so that you
-can add groups for syntactic purposes without interfering with
-the numbering of the groups that are meant to be referred to.
+you can't refer back to it with @samp{\@var{d}} (see below). This is
+useful in mechanically combining regular expressions, so that you can
+add groups for syntactic purposes without interfering with the
+numbering of the groups that are meant to be referred to.
@item \@var{d}
@cindex back reference, in regexp