customparameter	Specifies a custom parameter.

id                  	Specifies an unique identifier for this element.
name                	The name/key of the custom variable.
AttributeCustomType 	Required.
defaultvalue        	The default value to assign the variable.
required            	Specifies if required by the configuration.
access              	If true, a class field, get method, and set method will be generated for the variable.
idref               	Specifies a reference to the element with the matching <a href=&quot;"idAttribute.

<description>         	Description of the custom parameter.
<history>             	Specifies the custom parameter history.
<displayname>         	Description of the custom parameter.
<units>               	Specifies the custom parameter units.
<deprecated>          	Specifies that the contents of this element should be marked as deprecated.
<specreference>       	Specification reference for this custom parameter.
<enum>                	Specifies a enumeration option configuration.
<minimum>             	Specifies the minimum value.
<maximum>             	Specifies the maximum value.
