+L<FS::reg_code> - One-time registration codes
+
+L<FS::reg_code_pkg> - Class linking registration codes (see L<FS::reg_code>) with package definitions (see L<FS::part_pkg>)
+
+L<FS::rate> - Rate plans for call billing
+
+L<FS::rate_region> - Rate regions for call billing
+
+L<FS::rate_prefix> - Rate region prefixes for call billing
+
+L<FS::rate_detail> - Rate plan detail for call billing
+