=back
+=head1 FLOW
+
+ bill_and_collect
+
+ cancel_expired_pkgs
+ suspend_adjourned_pkgs
+
+ bill
+ (do_cust_event pre-bill)
+ _make_lines
+ _handle_taxes
+ (vendor-only) _gather_taxes
+ _omit_zero_value_bundles
+ calculate_taxes
+
+ apply_payments_and_credits
+ collect
+ do_cust_event
+ due_cust_event
+
=head1 BUGS
=head1 SEE ALSO