The element <enumeration> provides the allowable values for the product attribute. The allowable values can be used to assist the technical author in creating applicability annotations.The element <enumeration> is optional and repeatable. If there are multiple values and ranges to define, several methods can be employed, including the following:- single element <enumeration> with attribute applicPropertyValues representing the entire set of values and ranges- multiple element <enumeration> with attribute applicPropertyValues representing a single value or range