A property exists with a given value
The component will be taken into account for the nomenclature if a property exists in the document with a particular value.
The value can be ''Equal to'' or ''Different from''.
Example : If the property ''Material'' exists in the document and that its value is ''Steel'', then the operation is applied.
You can also define several possible values by separating them by the character ''§''.
Example : If the property ''Material'' exists on the document with one of the values Steel, Aluminum or Cast iron, then the operation is applied.