Jena infer example

Can someone provide a sample invocation of Jena's infer command?    Documentation [1] says this:


riotcmd.infer --rdfs VOCAB FILE FILE ...


but doesn't give example examples of what VOCAB is.


Same with command line help:


C> infer.bat --help

infer --rdfs=vocab FILE ...

  General

      -v   --verbose         Verbose

      -q   --quiet           Run with minimal output

      --debug                Output information for debugging

      --help

      --version              Version information


[1] https://jena.apache.org/documentation/io/


Thanks,


--

Mark Wallace

PRINCIPAL ENGINEER, SEMANTIC APPLICATIONS

MODUS OPERANDI, INC.