[cups] IPP-over-USB

[Brian Potkin]

 This is a general a general question about IPP-over-USB. If I were to be
 asked  how a user went about purchasing a driverless printer, I would
 say - look at the box or in the vendor's literature for "AirPrint". That
 seems a reasonable rule-of-thumb.

How about IPP-over-USB? Are there more criteria to search out or does
 AirPrint guarantee IPP-over-USB as well as IPP-over-network?  Is there
 anything special about such printers other than they do IPP?

-- 
Brian.