Use the CSaleTax class to create, modify, delete or retrieve
information about the taxes or tax exempts.
||Replaces parameters of the specified tax with the new ones.
||Deletes the specified tax. This also deletes all rates and exempts of this
||Returns parameters of the specified tax.
||Returns an optionally sorted and filtered list of taxes.
||Retrieves a filtered set of tax exempt records from the tax exempt registry.
||Adds a new record to the tax exempt registry.
||Deletes tax exempts according to the
specified filter from the tax exempt register.
||Creates a new tax given its parameters.