Revert part of last change because the corresponding display looks strange.

    <p>The usage of these directives is:</p>

    <highlight language="config">

Require host <var>address</var>

Require ip <var>ip.address</var>

Require host address

Require ip ip.address

    </highlight>

    <p>In the first form, <var>address</var> is a fully qualified