+The
+.B -attachformat
+option specifies the MIME header field formats: a value of
+.B 0
+includes the
+.I x-unix-mode
+attribute as noted above. A value of
+.BR 1 ,
+the default,
+suppresses that, puts the file name in the
+\*(lqContent-Description\*(rq header, and
+adds a \*(lqContent-Disposition\*(rq header. A value of
+.B 2
+adds the file
+.I modification-date
+parameter to the \*(lqContent-Disposition\*(rq header. You can
+specify one value in your profile, and override it for individual
+messages at the
+.I whatnow
+prompt.
+.PP
+Here are example message part headers, for an attachment, for each of the
+.B -attachformat
+values:
+.PP
+.nf
+-attachformat 0:
+Content-Type: text/plain; name="VERSION"; x-unix-mode="0644";
+ charset="us-ascii"
+Content-Description: ASCII text
+
+-attachformat 1:
+Content-Type: text/plain; name="VERSION"; charset="us-ascii"
+Content-Description: VERSION
+Content-Disposition: attachment; filename="VERSION"
+
+-attachformat 2:
+Content-Type: text/plain; name="VERSION"; charset="us-ascii"
+Content-Description: VERSION
+Content-Disposition: attachment; filename="VERSION"; modification-date="Mon, 19 Dec 2005 22:39:51 -0600"
+.fi
+.PP