(Isearch Scroll): Add example of using the `isearch-scroll' property.

(Isearch Scroll): Add example of using the `isearch-scroll' property.
(Slow Isearch): Reference anchor for `baud-rate' instead of entire
`Display Custom' node.
(Regexp Replace): Put text that requires Emacs Lisp knowledge last
and de-emphasize it.
(Other Repeating Search): `occur' currently can not correctly
handle multiline matches.  Correct, clarify and update description
of `flush-lines' and `keep-lines'.