*** New command `vc-ediff' allows visual comparison of two revisions
of a file similar to `vc-diff', but using ediff backend.
++++
+*** The option vc-initial-comment was removed in Emacs 23.2, but
+this was not advertised at the time.
+
** FIXME: xdg-open for browse-url and reportbug, 2010/08.
** Obsolete modes