L<FS::cust_pkg_detail> - Customer package details class
+L<FS:;cust_pkg_discount> - Customer package discount class
+
+L<FS:;cust_bill_pkg_discount> - Customer package discount line item application class
+
+L<FS:;discount> - Discount class
+
L<FS::reason_type> - Reason type class
L<FS::reason> - Reason class