@node Multicast
+@cindex multicast area
@unnumbered Multicast areas
NNCP has ability to multicast packets: send single packet to multiple
can should it to the subscribers further
@end itemize
+@vindex MsgHash
Area's message identity (@code{MsgHash}) is the hash of the encrypted
packet header. Because the area packet, containing the encrypted packet,
is relayed as-is without any modifications, that area message's hash