+@node Appendices
+@chapter Appendices
+
+@menu
+* Responses:: Standard rules for determining where responses go.
+@end menu
+
+
+@node Responses
+@section Responses
+
+To determine where a message is to go, the following algorithm is used
+by default.
+
+@table @dfn
+@item reply
+A @dfn{reply} is when you want to respond @emph{just} to the person who
+sent the message via mail. There will only be one recipient. To
+determine who the recipient will be, the following headers are
+consulted, in turn:
+
+@table @code
+@item Reply-To
+
+@item From
+@end table
+
+
+@item wide reply
+A @dfn{wide reply} is a mail response that includes @emph{all} entities
+mentioned in the message you are responded to. All mailboxes from the
+following headers will be concatenated to form the outgoing
+@code{To}/@code{Cc} headers:
+
+@table @code
+@item From
+(unless there's a @code{Reply-To}, in which case that is used instead).
+
+@item Cc
+
+@item To
+@end table
+
+If a @code{Mail-Copies-To} header is present, it will also be included
+in the list of mailboxes. If this header is @samp{never}, that means
+that the @code{From} (or @code{Reply-To}) mailbox will be suppressed.
+
+
+@item followup
+A @dfn{followup} is a response sent via news. The following headers
+(listed in order of precedence) determine where the response is to be
+sent:
+
+@table @code
+
+@item Followup-To
+
+@item Newsgroups
+
+@end table
+
+If a @code{Mail-Copies-To} header is present, it will be used as the
+basis of the new @code{Cc} header, except if this header is
+@samp{never}.
+
+@end table
+
+