GFDL-1.2 (21390B)
1Valid-License-Identifier: GPL-2.0 OR GFDL-1.2-no-invariants-or-later 2Valid-License-Identifier: GPL-2.0 OR GFDL-1.2-no-invariants-only 3Valid-License-Identifier: GFDL-1.2-no-invariants-or-later 4Valid-License-Identifier: GFDL-1.2-no-invariants-only 5SPDX-URL: https://spdx.org/licenses/GFDL-1.2-no-invariants-or-later.html 6Usage-Guide: 7 The GNU Free Documentation License should only be used without 8 Invariant Sections, Front-Cover Texts or Back-Cover Texts. 9 It should not be used for new documents. 10 To use the license in source code, put the following SPDX tag/value pair 11 into a comment according to the placement guidelines in the licensing 12 rules documentation: 13 SPDX-License-Identifier: GPL-2.0 OR GFDL-1.2-no-invariants-or-later 14 or 15 SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-only 16 or 17 SPDX-License-Identifier: GFDL-1.2-no-invariants-or-later 18 or 19 SPDX-License-Identifier: GFDL-1.2-no-invariants-only 20License-Text: 21 GNU Free Documentation License 22 Version 1.2, November 2002 23 24 25 Copyright (C) 2000,2001,2002 Free Software Foundation, Inc. 26 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 27 Everyone is permitted to copy and distribute verbatim copies 28 of this license document, but changing it is not allowed. 29 30 310. PREAMBLE 32 33The purpose of this License is to make a manual, textbook, or other 34functional and useful document "free" in the sense of freedom: to 35assure everyone the effective freedom to copy and redistribute it, 36with or without modifying it, either commercially or noncommercially. 37Secondarily, this License preserves for the author and publisher a way 38to get credit for their work, while not being considered responsible 39for modifications made by others. 40 41This License is a kind of "copyleft", which means that derivative 42works of the document must themselves be free in the same sense. It 43complements the GNU General Public License, which is a copyleft 44license designed for free software. 45 46We have designed this License in order to use it for manuals for free 47software, because free software needs free documentation: a free 48program should come with manuals providing the same freedoms that the 49software does. 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