| <H2>System Overview</H2> |
| |
| <P>CUPS provides a portable printing layer for UNIX®-based |
| operating systems. It has been developed by |
| <A HREF="http://www.easysw.com">Easy Software Products</A> to promote a |
| standard printing solution for all UNIX vendors and users. CUPS |
| provides the System V and Berkeley command-line interfaces. |
| |
| <P>CUPS uses the Internet Printing Protocol ("IPP") as the basis for |
| managing print jobs and queues. The Line Printer Daemon ("LPD") Server |
| Message Block ("SMB"), and AppSocket (a.k.a. JetDirect) protocols are |
| also supported with reduced functionality. CUPS adds network printer |
| browsing and PostScript Printer Description ("PPD") based |
| printing options to support real-world printing under UNIX. |
| |
| <P>CUPS also includes a customized version of GNU Ghostscript |
| (currently based off GNU Ghostscript 5.50) and an image file RIP that |
| are used to support non-PostScript printers. Sample drivers for HP and |
| EPSON printers are included that use these filters. |
