the printer driver
On Windows systems, this is the name of the driver (often "winspool").
On Mac OSX, this is the destination type ("Printer", "Fax", "File", or "Preview").
On X/Window systems, this is the name of a display connection to the
Xprt server (the default is ":1").
On GTK+, this is the backend type name (eg. GtkPrintBackendCups).
the printer driver On Windows systems, this is the name of the driver (often "winspool"). On Mac OSX, this is the destination type ("Printer", "Fax", "File", or "Preview"). On X/Window systems, this is the name of a display connection to the Xprt server (the default is ":1"). On GTK+, this is the backend type name (eg. GtkPrintBackendCups).