The <b>Usage ABE</b> contains all the Entities to define Usages types specifying a type of employment of an Entity and track their records. The Usage ABE pattern can be applied in several Domains such as Product Usage ABE in the Product Domain. For example, Product Usage Specification enables describing different types of usages enabled by a type of Product such as SMS, MMS, Voice call... enabled by a Mobile Line Product Specification.<br/>