BLAKE2b hash output of their contents. That supplementary command is
not used often in practice, if ever.
+@node nncp-cronexpr
+@section nncp-cronexpr
+
+@example
+$ nncp-cronexpr -num 12 "*/1 * * * * SAT,SUN 2021"
+@end example
+
+Check validity of specified @ref{CronExpr, cron expression} and print 12
+next time entities.
+
@node nncp-daemon
@section nncp-daemon