tape drives could easily provide too much throughput your CPU won't be
able to verify on the fly. So if you won't @ref{nncp-toss, toss}
received packets at the place, it is advisable either to run
-@ref{nncp-check} utility for packets integrity verification, or to use
-@option{-check} option to enable on the fly integrity check.
+@command{@ref{nncp-check}} utility for packets integrity verification,
+or to use @option{-check} option to enable on the fly integrity check.
You can specify multiple @option{NODE} arguments, telling for what nodes
you want to create the stream, or take it from. If no nodes are