This is the debian-installer build system, which produces the Debian installation media. The debian-installer build system is Copyright 2001-2009 by Joey Hess and the d-i team, and is licensed under the terms of the GNU GPL 2 or any later version, which can be found in /usr/share/common-licenses/GPL-2 on Debian systems. The install media built by the debian-installer build system contain a wide variety of free software, including the GNU C library, busybox, linux kernel, newt, etc. It also includes much of the rest of the debian-installer: main-menu, udpkg, anna, cdebconf, rootskel and di-utils. The sources to all of the software included in the install media, and the details about its copyright can be found in the Debian archive. The open use Debian logo is used in some boot screens. It is copyright (c) 1999 Software in the Public Interest. This logo or a modified version may be used by anyone to refer to the Debian project, but does not indicate endorsement by the project. http://www.debian.org/logos/