agentref	Specifies a agent reference.

idref               	Specifies a reference to the element with the matching <a href=&quot;"idAttribute.

<description>         	Description of the agent reference.
<deprecated>          	Specifies that the contents of this element should be marked as deprecated.
<commandref>          	Specifies a command reference.
<measurementref>      	Specifies a measurement reference.
<signalref>           	Specifies a signal reference.
