@item size
The size (in octets) of the part (@code{Content-Disposition}).
+@item sign
+What technology to sign this MML part with (@code{smime} or
+@code{pgpmime})
+
+@item encrypt
+What technology to encrypt this MML part with (@code{smime} or
+@code{pgpmime})
+
@end table
Parameters for @samp{application/octet-stream}:
@end table
+Parameters for @samp{sign=smime}:
+
+@table @samp
+
+@item keyfile
+File containing key and certificate for signer.
+
+@end table
+
+Parameters for @samp{encrypt=smime}:
+
+@table @samp
+
+@item certfile
+File containing certificate for recipient.
+
+@end table
+
@node Advanced MML Example
@section Advanced MML Example