1. X Window System core components This metapackage provides the essential components for a standalone workstation running the X Window System. It provides the X libraries, an X server (except on the S/390 architecture), a set of fonts, and a group of basic X clients and utilities. Higher level metapackages, such as those for desktop environments, can depend on this package and simplify their dependencies. It should be noted that a package providing x-window-manager and a package providing x-terminal-emulator should also be installed to ensure a comfortable X experience. From Debian 3.0r0 APT