+L<FS::h_Common> - History table base class
+
+L<FS::h_cust_pay> - Historical record of customer payment changes
+
+L<FS::h_cust_credit> - Historical record of customer credit changes
+
+L<FS::h_cust_bill> - Historical record of customer tax changes (old-style)
+
+L<FS::h_cust_svc> - Object method for h_cust_svc objects
+
+L<FS::h_cust_tax_exempt> - Historical record of customer tax changes (old-style)
+
+L<FS::h_domain_record> - Historical DNS entry objects
+
+L<FS::h_svc_acct> - Historical account objects
+
+L<FS::h_svc_broadband> - Historical broadband connection objects
+
+L<FS::h_svc_cert> - Historical certificate services
+
+L<FS::h_svc_dish> - Historical Dish Network services
+
+L<FS::h_svc_domain> - Historical domain objects
+
+L<FS::h_svc_dsl> - Historical DSL objects
+
+L<FS::h_svc_external> - Historical externally tracked service objects
+
+L<FS::h_svc_forward> - Historical mail forwarding alias objects
+
+L<FS::h_svc_hardware> - Historical isntalled hardware service objects
+
+L<FS::h_svc_mailinglist> - Historical mailing list objects
+
+L<FS::h_svc_pbx> - Historical PBX objects
+
+L<FS::h_svc_phone> - Historical phone number objects
+
+L<FS::h_svc_port> - Historical port number objects
+
+L<FS::h_svc_www> - Historical web virtual host objects
+
+=head2 Remote API modules
+
+L<FS::SelfService> - Self-service API
+
+L<FS::SelfService::XMLRPC> - Self-service XML-RPC API
+
+L<FS::API> - Backoffice XML-RPC API
+
+=head2 User Interface classes
+
+L<FS::UI::Web> - Web user-interface class
+
+L<FS::UI::bytecount> - Byte counter user-interface class