Yes, that's exactly what I intend to do, provide a phrase that would be appropriate for subscription plan shipping for the customers who need that, and at the same time, not be displayed for other customers. The subscription plans themselves are handled completely outside of Zencart at the moment, through Paypal. I just added the code for them to one of the product pages. I have to enter those orders manually into Zencart. But the prepaid payment module and a customized shipping module will allow everything else about the order to be handled just as if it had originated within the Zencart system. Not perfect, but it will do for now.