-@url{https://en.wikipedia.org/wiki/Darknet, darknet} networks for
-fire-and-forget secure reliable files, file requests and Internet mail
-transmission. All packets are integrity checked,
-@url{https://en.wikipedia.org/wiki/End-to-end_encryption, end-to-end}
-encrypted, explicitly authenticated by known participants public keys.
-@url{https://en.wikipedia.org/wiki/Onion_routing, Onion encryption} is
-applied to relayed packets. Each node acts both as a client and server,
-can use push and poll behaviour model.
+@url{https://en.wikipedia.org/wiki/Darknet, darknet}
+@url{https://en.wikipedia.org/wiki/Delay-tolerant_networking, delay-tolerant}
+networks for fire-and-forget secure reliable files, file requests,
+Internet mail and commands transmission. All packets are integrity
+checked, @url{https://en.wikipedia.org/wiki/End-to-end_encryption,
+end-to-end} encrypted, explicitly authenticated by known participants
+public keys. @url{https://en.wikipedia.org/wiki/Onion_routing, Onion
+encryption} is applied to relayed packets. Each node acts both as a
+client and server, can use push and poll behaviour model.
+Also there is @ref{Multicast, multicasting} areas support.