the former is not always used.
(Mail Headers): Use active voice. Add "Mail-reply-to".
Change case of "Id". Avoid repeated "appropriate".
(Mail Aliases): Fix previous change - use an example with a ".", so it
does actually get quoted when expanded.
(Mail Sending): Mailclient is the default on some systems.
(Citing Mail): Mention mail-indentation-spaces.
(Mail Mode Misc): Add an @dfn for "mail signature".
(Mail Headers): Put info about initialization and changing in one place
at the start. Update FCC section for mbox Rmail. Clarify From
section, mention mail-setup-with-from. Clarify Reply-to section.
Add Mail-followup-to and mail-mailing-lists. Clarify References section.
(Mail Aliases): Update example, make less contentious.
Update for name change of mail-interactive-insert-alias.
(Mail Mode): Remove mention of `%' as a word separator.
(Mail Sending): Mention mail-send-hook. Mention Mailclient.
(Header Editing): Add reply-to, mail-reply-to, and mail-followup-to commands.
Clarify FCC handling. In mail-complete, add reference to
Mail Aliases section, and mention mail-complete-function.
(Citing Mail): Mention mail-yank-ignored-headers and mail-citation-hook.
(Mail Mode Misc): Clarify the mail-signature function. Add basic
signature netiquette. Explain how the mail hooks work when continuing
a composition.
(Mail Amusements): Internationalize the spook section a bit.
Remove the spook mail-setup-hook example, since it doesn't work well.
Mention fortune-file.
(Mail Methods): Mention read-mail-command.
