higher priority packets, like mail messages, will pass first, even when
lower priority packet was already been partially downloaded.
-There are default niceness levels built-in for @ref{nncp-exec},
-@ref{nncp-file} and @ref{nncp-freq} commands. But pay attention that it
-can give information about underlying payload to the adversary!
+There are default niceness levels built-in for
+@command{@ref{nncp-exec}}, @command{@ref{nncp-file}} and
+@command{@ref{nncp-freq}} commands. But pay attention that it can give
+information about underlying payload to the adversary!
There are 1-255 niceness levels. They could be specified either as
integer, or using aliases with delta modifiers: