If present, <values> specifies that the enclosing <entitlement> requires a parameter value. If multi-valued="false" then the entitlement can only be granted to a given recipient with single value at a time, otherwise the entitlement can be granted to the same recipient more than once, each with a different value. <values> might also specify a list of possible values for the parameter value, or a query that can be issued to the associated application in order to get a list of possible parameters values.
See <entitlement>.
( query-app | value + ) ?