found old ^ notation for control chars; use C-

[Dan Jacobson]

When we hit C-x s, it asks
  Save file /tmp/a? (y, n, !, ., q, C-r or C-h)
However, "?" is not in that list, though it is a valid choice.

BTW, when we hit "?", we see
  ^R to display the current buffer;

Don't you want to say C-r?

Maybe grep thru all the emacs docs and sources for any "^" style
notations of control chars, and change them to "C-".