Common UNIX Printing System(tm) - image development files The Common UNIX Printing System (or CUPS(tm)) is a printing system and general replacement for lpd and the like. It supports the Internet Printing Protocol (IPP), and has its own filtering driver model for handling various document types. This package provides the files necessary for developing applications that use the CUPS raster image format. The terms "Common UNIX Printing System" and "CUPS" are trademarks of Easy Software Products (www.easysw.com), and refer to the original source packages from which these packages are made.