@quotation
Permission is granted to copy, distribute and/or modify this document
-under the terms of the GNU Free Documentation License, Version 1.1 or
+under the terms of the GNU Free Documentation License, Version 1.2 or
any later version published by the Free Software Foundation; with no
Invariant Sections, with the Front-Cover texts being ``A GNU
Manual'', and with the Back-Cover Texts as in (a) below. A copy of the
The most typical thing users want to use the multipart things in
@acronym{MIME} for is to add ``attachments'' to mail they send out.
This can be done with the @kbd{C-c C-a} command, which will prompt for
-a file name and a @acronym{MIME} type. If your Emacs supports drag
-and drop, you can also drop the file in the Message buffer.
+a file name and a @acronym{MIME} type.
+
+@vindex mml-dnd-protocol-alist
+@vindex mml-dnd-attach-options
+If your Emacs supports drag and drop, you can also drop the file in the
+Message buffer. The variable @code{mml-dnd-protocol-alist} specifies
+what kind of action is done when you drop a file into the Message
+buffer. The variable @code{mml-dnd-attach-options} controls which
+@acronym{MIME} options you want to specify when dropping a file. If it
+is a list, valid members are @code{type}, @code{description} and
+@code{disposition}. @code{disposition} implies @code{type}. If it is
+@code{nil}, don't ask for options. If it is @code{t}, ask the user
+whether or not to specify options.
You can also create arbitrarily complex multiparts using the @acronym{MML}
language (@pxref{Composing, , Composing, emacs-mime, The Emacs MIME
@item message-alternative-emails
@vindex message-alternative-emails
-A regexp to match the alternative email addresses. The first matched
-address (not primary one) is used in the @code{From} field.
+Regexp matching alternative email addresses. The first address in the
+To, Cc or From headers of the original article matching this variable is
+used as the From field of outgoing messages, replacing the default From
+value.
+
+For example, if you have two secondary email addresses john@@home.net
+and john.doe@@work.com and want to use them in the From field when
+composing a reply to a message addressed to one of them, you could set
+this variable like this:
+
+@lisp
+(setq message-alternative-emails
+ (regexp-opt '("john@@home.net" "john.doe@@work.com")))
+@end lisp
+
+This variable has precedence over posting styles and anything that runs
+off @code{message-setup-hook}.
@item message-allow-no-recipients
@vindex message-allow-no-recipients