@option{-dump} option outputs plain packet's payload (if it is file
transmission, then it will be the file itself as an example). If it is
an encrypted packet, then it will be decrypted first, outputing the
-included plain packet, that can be fed to @command{nncp-pkt} again:
+included plain packet, that can be fed to @command{@ref{nncp-pkt}} again:
@example
Packet type: plain