anchor.diff:  == O
   
   [[overdue_system]]
  -Overdue System:: A Kill Bill system that defines the flow that the system must follow when an account is overdue (that is, has an unpaid balance). Also known as "Dunning".
  +Overdue System (or Dunning):: A Kill Bill module that defines the flow that the system must follow when an account is overdue (that is, has an unpaid balance). It is used in conjunction with the <<payment_retry_mechanism, payment retry system>>.
   
   == P
   
  
positive.code: 
  //Account Balance:: TODO
  
  Account Credit:: The amount that your business owes to a customer. It is generated when an administrator adds a credit, a subscription is cancelled, etc. It is calculated as the sum of `CBA_ADJ` <<Invoice_Item, invoice items>>.
  
  
  == B
  
negative.code: == E
  
  [[entitlement]]
  Entitlement:: Represents the service provided to an end user (customer). It is separate from billing. See <<subscription, Subscription>>.
  
  [[entitlement_start_date]]
  Entitlement Start Date (Or "Entitlement Date"):: The date on which a user gains access to the underlying entitlement or product/service . See also <<billing_start_date, Billing Start Date>>.
  
  Evergreen Phase:: A type of <<phase,phase>> in which no end date is specified and Kill Bill continually bills the account for the subscription until the customer cancels it. A evergreen phase is specified as part of a <<plan,plan>> within the <<catalog,catalog>>.
  
  