Agora Manager says:
"In what loop of calculate_final_values do you wish to calculate the shipping? If zero is selected, shipping will never be calculated. If
3 is selected, then the tax is based on the pre-shipping subtotal. Currently, if either 1 or 2 is selected, then the tax is based on the
subtotal of merchandise + shipping."
What is the difference between 1 and 2?
Regards,
~Ken