CUPS
Menu path: Devices > Printers > CUPS
The Common UNIX Printing SystemTM (or CUPS) is the software that allows you to print from within applications, e.g. from this web browser.
CUPS converts the page descriptions produced by the application, e.g. "Insert Paragraph", "Draw Line" etc., into data that can be read by the printer, and then sends this information to the printer.
With the appropriate configuration, CUPS can use printing devices via the following connections:
Parallel (LPT 1, LPT 2)
Serial (COM1, COM2, USB COM1, USB COM2 – with a USB-to-serial adapter)
USB (1st and 2nd USB printer)
Network (TCP/IP, LPD, IPP, SMB)
Default Paper Size: Specify a default paper size for print jobs.
Possible values:
Letter
Legal
Executive
A5
A4
A3
Autodetect (Default)
Additional information on CUPS printers can be found under How to Map a Local Printer to a Citrix or RDP Session on IGEL OS and Installing a Custom CUPS Driver.