chPort9100(11), -- Bi-directional printing protocol
-- utilizing TCP port 9100 for
-- job control and page description
-- language (PDL) data.
HP printers do not support port 9101.
Sorry it took a while to get this. And yes, I still owe a list of the optional
groups implemented by our printers.
See (some of) you in NYC.
Bob Pentecost