parameters	Message can contain multiple parameters.

id                  	Specifies an unique identifier for this element.
implementation      	Specifies the implementation class name.
idref               	Specifies a reference to the element with the matching <a href=&quot;"idAttribute.
AttributeParametersType	Specifies the data type of parameters.

<description>         	Specifies the parameters description.
<history>             	Specifies the parameters history.
<units>               	Specifies the parameters units.
<deprecated>          	Specifies that the contents of this element should be marked as deprecated.
<specreference>       	Specification reference for this group of parameters.
<key>                 	Specifies the unique parameters key.
<parameters>          	Specifies the parameters.
