(Sorting the Summary Buffer): Replace 2005-10-29

(Sorting the Summary Buffer): Replace 2005-10-29
change by a reference to `Group Parameters'.  Use `(not ...)' in
example instead of `lambda' expression.
(Group Parameters): Add simplified sorting example based on
example for `Sorting the Summary Buffer' from Jari Aalto
<jari.aalto@cante.net>.
(Example Methods): Add example for an indirect connection.