L<FS::cdr_carrier> - CDR carrier class
-L<FS::cdr_upstream_rate> - CDR upstream rate class
-
L<FS::cdr_type> - CDR type class
L<FS::svc_external> - Externally tracked service class.
L<FS::pkg_category> - Package category class (invoice oriented)
-L<FS::pkg_class> - Package class class (tax oriented)
+L<FS::pkg_class> - Package class class
L<FS::part_pkg> - Package definition class