ediff-restore-diff
ediff-restore-diff is an interactive compiled Lisp function in `ediff-util.el
'.
(ediff-restore-diff ARG &optional KEY)
Restore ARGth diff from `ediff-killed-diffs-alist'.
ARG is a prefix argument. If ARG is nil, restore the current-difference.
If the second optional argument, a character, is given, use it to
determine the target buffer instead of (ediff-last-command-char)