1 Plan 9 from Bell Labs is provided under the terms of the MIT license,
2 reproduced in the file /lib/legal/mit.
4 Any additions or changes (as recorded in Mercurial history) made by 9front
5 are also provided under the same MIT License, unless otherwise indicated.
7 The following exceptions apply:
9 1. No right is granted to create derivative works of or
10 to redistribute (other than with the Plan 9 Operating System)
11 the screen imprinter fonts identified in subdirectory
12 /lib/font/bit/lucida and printer fonts (Lucida Sans Unicode, Lucida
13 Sans Italic, Lucida Sans Demibold, Lucida Typewriter, Lucida Sans
14 Typewriter83), identified in subdirectory /sys/lib/postscript/font.
15 These directories contain material copyrights by B&H Inc. and Y&Y Inc.
17 2. The printer fonts identified in subdirectory /sys/lib/ghostscript/font
18 are subject to the GNU GPL, version 2, reproduced in the file /lib/legal/gpl.
20 3. The ghostscript program in the subdirectory /sys/src/cmd/gs is
21 covered by the Aladdin Free Public License, reproduced in the file
24 4. The Python programming language in the subdirectories /sys/src/cmd/python and
25 /sys/lib/python is covered by the Python Software Foundation License, reproduced
26 in the file /sys/src/cmd/python/LICENSE.
28 5. The Mercurial version control system in the subdirectories /sys/src/cmd/hg and
29 /sys/lib/mercurial is covered by the GNU GPL, version 2, reproduced in
30 the file /lib/legal/gpl.
32 Other, less notable exceptions are marked in the file tree with
33 COPYING, COPYRIGHT, or LICENSE files.