Hi Doug
Actually, the formatted spec codes do work in Invoices, and they work in OrderEntry so long as you don't mind that they pull the address from the customer master rather than from the bill-to section of the order/invoice.
I will ask the client if they ever overwrite the bill-to address, and if not, I think I have a reasonable workaround for now.
They will soon own PrintBoss, so that's a possible solution too.
Steve