-B<insert> method assumes that the frequency of the package associated with the
-associated line item remains unchanged during the lifetime of the system.
-It may get the tax exemption adjustments wrong if package definitions change
-frequency. The presense of delete methods in FS::cust_main_county and
-FS::tax_rate makes crediting of old "texas tax" unreliable in the presense of
-changing taxes. Explicit tax credit requests? Carry 'taxable' onto line
-items?
+B<insert> method used to assume that the frequency of the package associated
+with the associated line item remained unchanged during the lifetime of the
+system. That is still used as a fallback. It may get the tax exemption
+adjustments wrong if package definitions change frequency. The presense of
+delete methods in FS::cust_main_county and FS::tax_rate makes crediting of
+old "texas tax" unreliable in the presense of changing taxes. Explicit tax
+credit requests? Carry 'taxable' onto line items?