A <subordinates> element only appears as part of a group and delimits the content that is conditionally displayed by the user interface Agent.
A <subordinates> element might not be a group leader; instead, the group leader value determines whether the content of the <subordinates> element is displayed or not. The value that causes the content of the <subordinates> element to be displayed is determined by the value of the active-value attribute.
There can be more than one <subordinates> element under a group. Each subordinate in such a case typically has a different active-value value.
See group.