<arg choice='plain'><replaceable>hostname</replaceable></arg>
<arg choice='plain'><replaceable>auth</replaceable></arg>
<arg choice='plain'><replaceable>service</replaceable></arg>
<arg choice='plain'><replaceable>hostname</replaceable></arg>
<arg choice='plain'><replaceable>auth</replaceable></arg>
<arg choice='plain'><replaceable>service</replaceable></arg>