--- a/mail.rst	Sun Mar 07 12:39:42 2010 +0200
+++ b/mail.rst	Sun Mar 07 12:57:03 2010 +0200
@@ -2,10 +2,21 @@
 
 * Message headers fields.
 
+  from            =       "From:" mailbox-list CRLF
+  sender          =       "Sender:" mailbox CRLF
+  reply-to        =       "Reply-To:" address-list CRLF
+
+  to              =       "To:" address-list CRLF
+  cc              =       "Cc:" address-list CRLF
+  bcc             =       "Bcc:" (address-list / [CFWS]) CRLF
+
+
+  http://tools.ietf.org/rfc//rfc2076.txt
+                Common Internet Message Headers, Informational
   http://tools.ietf.org/rfc/rfc2822.txt
-                 Internet Message Format
+                Internet Message Format, Standard Track
   http://tools.ietf.org/rfc/rfc2821.txt
-                 Simple Mail Transfer Protocol
+                Simple Mail Transfer Protocol, Standard Track
 
 * Sending email via gmail in emacs.