L<FS::part_export_option> - Export option class
-L<FS::pkg_category> - Package category class
+L<FS::pkg_category> - Package category class (invoice oriented)
-L<FS::pkg_class> - Package class class
+L<FS::pkg_class> - Package class class (tax oriented)
L<FS::part_pkg> - Package definition class
L<FS::part_pkg_option> - Package definition option class
+L<FS::part_pkg_report_option> - Package reporting classification class
+
L<FS::pkg_svc> - Class linking package definitions (see L<FS::part_pkg>) with
service definitions (see L<FS::part_svc>)