Docs are easier than code sometimes

    </table>

    <p>If the Proxy directive scheme starts with the

    <code>balancer://</code> then a virtual worker that does not really

    <code>balancer://</code> (eg: <code>balancer://cluster/</code>, 

    any path information is ignored)  then a virtual worker that does not really

    communicate with the backend server will be created. Instead it is responsible

    for the management of several "real" workers. In that case the special set of

    parameters can be add to this virtual worker. See <module>mod_proxy_balancer</module>