Authentication and other information can be encoded in the URL as GET data, as long as the total length of the URL does not exceed a 1024 character limit. [0045] PD (Print POST Data)???data to be sent as POST data with a print request. [0046] HD (Print Header Data)???data to be sent as header data with a request. [0047] MSG (Print Message)???message to be displayed to a user if SU is empty, and th