| 1 | @c -*-texinfo-*-
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| 2 | @node GNU Free Documentation License, , , Copying This Manual
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| 3 |
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| 4 | @appendix GNU Free Documentation License
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| 5 | @center Version 1.1, March 2000
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| 6 |
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| 7 | @display
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| 8 | Copyright (C) 2000 Free Software Foundation, Inc.
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| 9 | 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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| 10 |
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| 11 | Everyone is permitted to copy and distribute verbatim copies
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| 12 | of this license document, but changing it is not allowed.
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| 13 | @end display
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| 14 | @sp 1
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| 15 | @enumerate 0
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| 16 | @item
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| 17 | PREAMBLE
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| 18 |
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| 19 | The purpose of this License is to make a manual, textbook, or other
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| 20 | written document ``free'' in the sense of freedom: to assure everyone
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| 21 | the effective freedom to copy and redistribute it, with or without
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| 22 | modifying it, either commercially or noncommercially. Secondarily,
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| 23 | this License preserves for the author and publisher a way to get
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| 24 | credit for their work, while not being considered responsible for
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| 25 | modifications made by others.
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| 26 |
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| 27 | This License is a kind of ``copyleft'', which means that derivative
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| 28 | works of the document must themselves be free in the same sense. It
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| 29 | complements the GNU General Public License, which is a copyleft
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| 30 | license designed for free software.
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| 31 |
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| 32 | We have designed this License in order to use it for manuals for free
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| 33 | software, because free software needs free documentation: a free
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| 34 | program should come with manuals providing the same freedoms that the
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| 35 | software does. But this License is not limited to software manuals;
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| 36 | it can be used for any textual work, regardless of subject matter or
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| 37 | whether it is published as a printed book. We recommend this License
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| 38 | principally for works whose purpose is instruction or reference.
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| 39 |
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| 40 | @sp 1
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| 41 | @item
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| 42 | APPLICABILITY AND DEFINITIONS
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| 43 |
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| 44 | This License applies to any manual or other work that contains a
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| 45 | notice placed by the copyright holder saying it can be distributed
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| 46 | under the terms of this License. The ``Document'', below, refers to any
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| 47 | such manual or work. Any member of the public is a licensee, and is
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| 48 | addressed as ``you.''
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| 49 |
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| 50 | A ``Modified Version'' of the Document means any work containing the
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| 51 | Document or a portion of it, either copied verbatim, or with
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| 52 | modifications and/or translated into another language.
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| 53 |
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| 54 | A ``Secondary Section'' is a named appendix or a front-matter section of
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| 55 | the Document that deals exclusively with the relationship of the
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| 56 | publishers or authors of the Document to the Document's overall subject
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| 57 | (or to related matters) and contains nothing that could fall directly
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| 58 | within that overall subject. (For example, if the Document is in part a
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| 59 | textbook of mathematics, a Secondary Section may not explain any
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| 60 | mathematics.) The relationship could be a matter of historical
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| 61 | connection with the subject or with related matters, or of legal,
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| 62 | commercial, philosophical, ethical or political position regarding
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| 63 | them.
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| 64 |
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| 65 | The ``Invariant Sections'' are certain Secondary Sections whose titles
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| 66 | are designated, as being those of Invariant Sections, in the notice
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| 67 | that says that the Document is released under this License.
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| 68 |
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| 69 | The ``Cover Texts'' are certain short passages of text that are listed,
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| 70 | as Front-Cover Texts or Back-Cover Texts, in the notice that says that
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| 71 | the Document is released under this License.
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| 72 |
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| 73 | A ``Transparent'' copy of the Document means a machine-readable copy,
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| 74 | represented in a format whose specification is available to the
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| 75 | general public, whose contents can be viewed and edited directly and
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| 76 | straightforwardly with generic text editors or (for images composed of
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| 77 | pixels) generic paint programs or (for drawings) some widely available
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| 78 | drawing editor, and that is suitable for input to text formatters or
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| 79 | for automatic translation to a variety of formats suitable for input
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| 80 | to text formatters. A copy made in an otherwise Transparent file
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| 81 | format whose markup has been designed to thwart or discourage
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| 82 | subsequent modification by readers is not Transparent. A copy that is
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| 83 | not ``Transparent'' is called ``Opaque.''
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| 84 |
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| 85 | Examples of suitable formats for Transparent copies include plain
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| 86 | ASCII without markup, Texinfo input format, LaTeX input format, SGML
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| 87 | or XML using a publicly available DTD, and standard-conforming simple
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| 88 | HTML designed for human modification. Opaque formats include
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| 89 | PostScript, PDF, proprietary formats that can be read and edited only
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| 90 | by proprietary word processors, SGML or XML for which the DTD and/or
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| 91 | processing tools are not generally available, and the
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| 92 | machine-generated HTML produced by some word processors for output
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| 93 | purposes only.
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| 94 |
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| 95 | The ``Title Page'' means, for a printed book, the title page itself,
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| 96 | plus such following pages as are needed to hold, legibly, the material
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| 97 | this License requires to appear in the title page. For works in
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| 98 | formats which do not have any title page as such, ``Title Page'' means
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| 99 | the text near the most prominent appearance of the work's title,
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| 100 | preceding the beginning of the body of the text.
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| 101 | @sp 1
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| 102 | @item
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| 103 | VERBATIM COPYING
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| 104 |
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| 105 | You may copy and distribute the Document in any medium, either
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| 106 | commercially or noncommercially, provided that this License, the
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| 107 | copyright notices, and the license notice saying this License applies
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| 108 | to the Document are reproduced in all copies, and that you add no other
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| 109 | conditions whatsoever to those of this License. You may not use
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| 110 | technical measures to obstruct or control the reading or further
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| 111 | copying of the copies you make or distribute. However, you may accept
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| 112 | compensation in exchange for copies. If you distribute a large enough
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| 113 | number of copies you must also follow the conditions in section 3.
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| 114 |
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| 115 | You may also lend copies, under the same conditions stated above, and
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| 116 | you may publicly display copies.
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| 117 | @sp 1
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| 118 | @item
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| 119 | COPYING IN QUANTITY
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| 120 |
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| 121 | If you publish printed copies of the Document numbering more than 100,
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| 122 | and the Document's license notice requires Cover Texts, you must enclose
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| 123 | the copies in covers that carry, clearly and legibly, all these Cover
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| 124 | Texts: Front-Cover Texts on the front cover, and Back-Cover Texts on
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| 125 | the back cover. Both covers must also clearly and legibly identify
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| 126 | you as the publisher of these copies. The front cover must present
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| 127 | the full title with all words of the title equally prominent and
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| 128 | visible. You may add other material on the covers in addition.
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| 129 | Copying with changes limited to the covers, as long as they preserve
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| 130 | the title of the Document and satisfy these conditions, can be treated
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| 131 | as verbatim copying in other respects.
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| 132 |
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| 133 | If the required texts for either cover are too voluminous to fit
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| 134 | legibly, you should put the first ones listed (as many as fit
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| 135 | reasonably) on the actual cover, and continue the rest onto adjacent
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| 136 | pages.
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| 137 |
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| 138 | If you publish or distribute Opaque copies of the Document numbering
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| 139 | more than 100, you must either include a machine-readable Transparent
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| 140 | copy along with each Opaque copy, or state in or with each Opaque copy
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| 141 | a publicly-accessible computer-network location containing a complete
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| 142 | Transparent copy of the Document, free of added material, which the
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| 143 | general network-using public has access to download anonymously at no
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| 144 | charge using public-standard network protocols. If you use the latter
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| 145 | option, you must take reasonably prudent steps, when you begin
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| 146 | distribution of Opaque copies in quantity, to ensure that this
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| 147 | Transparent copy will remain thus accessible at the stated location
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| 148 | until at least one year after the last time you distribute an Opaque
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| 149 | copy (directly or through your agents or retailers) of that edition to
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| 150 | the public.
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| 151 |
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| 152 | It is requested, but not required, that you contact the authors of the
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| 153 | Document well before redistributing any large number of copies, to give
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| 154 | them a chance to provide you with an updated version of the Document.
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| 155 | @sp 1
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| 156 | @item
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| 157 | MODIFICATIONS
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| 158 |
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| 159 | You may copy and distribute a Modified Version of the Document under
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| 160 | the conditions of sections 2 and 3 above, provided that you release
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| 161 | the Modified Version under precisely this License, with the Modified
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| 162 | Version filling the role of the Document, thus licensing distribution
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| 163 | and modification of the Modified Version to whoever possesses a copy
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| 164 | of it. In addition, you must do these things in the Modified Version:
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| 165 |
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| 166 | A. Use in the Title Page (and on the covers, if any) a title distinct
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| 167 | from that of the Document, and from those of previous versions
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| 168 | (which should, if there were any, be listed in the History section
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| 169 | of the Document). You may use the same title as a previous version
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| 170 | if the original publisher of that version gives permission.@*
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| 171 | B. List on the Title Page, as authors, one or more persons or entities
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| 172 | responsible for authorship of the modifications in the Modified
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| 173 | Version, together with at least five of the principal authors of the
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| 174 | Document (all of its principal authors, if it has less than five).@*
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| 175 | C. State on the Title page the name of the publisher of the
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| 176 | Modified Version, as the publisher.@*
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| 177 | D. Preserve all the copyright notices of the Document.@*
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| 178 | E. Add an appropriate copyright notice for your modifications
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| 179 | adjacent to the other copyright notices.@*
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| 180 | F. Include, immediately after the copyright notices, a license notice
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| 181 | giving the public permission to use the Modified Version under the
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| 182 | terms of this License, in the form shown in the Addendum below.@*
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| 183 | G. Preserve in that license notice the full lists of Invariant Sections
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| 184 | and required Cover Texts given in the Document's license notice.@*
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| 185 | H. Include an unaltered copy of this License.@*
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| 186 | I. Preserve the section entitled ``History'', and its title, and add to
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| 187 | it an item stating at least the title, year, new authors, and
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| 188 | publisher of the Modified Version as given on the Title Page. If
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| 189 | there is no section entitled ``History'' in the Document, create one
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| 190 | stating the title, year, authors, and publisher of the Document as
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| 191 | given on its Title Page, then add an item describing the Modified
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| 192 | Version as stated in the previous sentence.@*
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| 193 | J. Preserve the network location, if any, given in the Document for
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| 194 | public access to a Transparent copy of the Document, and likewise
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| 195 | the network locations given in the Document for previous versions
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| 196 | it was based on. These may be placed in the ``History'' section.
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| 197 | You may omit a network location for a work that was published at
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| 198 | least four years before the Document itself, or if the original
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| 199 | publisher of the version it refers to gives permission.@*
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| 200 | K. In any section entitled ``Acknowledgements'' or ``Dedications'',
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| 201 | preserve the section's title, and preserve in the section all the
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| 202 | substance and tone of each of the contributor acknowledgements
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| 203 | and/or dedications given therein.@*
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| 204 | L. Preserve all the Invariant Sections of the Document,
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| 205 | unaltered in their text and in their titles. Section numbers
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| 206 | or the equivalent are not considered part of the section titles.@*
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| 207 | M. Delete any section entitled ``Endorsements.'' Such a section
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| 208 | may not be included in the Modified Version.@*
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| 209 | N. Do not retitle any existing section as ``Endorsements''
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| 210 | or to conflict in title with any Invariant Section.@*
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| 211 | @sp 1
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| 212 | If the Modified Version includes new front-matter sections or
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| 213 | appendices that qualify as Secondary Sections and contain no material
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| 214 | copied from the Document, you may at your option designate some or all
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| 215 | of these sections as invariant. To do this, add their titles to the
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| 216 | list of Invariant Sections in the Modified Version's license notice.
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| 217 | These titles must be distinct from any other section titles.
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| 218 |
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| 219 | You may add a section entitled ``Endorsements'', provided it contains
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| 220 | nothing but endorsements of your Modified Version by various
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| 221 | parties--for example, statements of peer review or that the text has
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| 222 | been approved by an organization as the authoritative definition of a
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| 223 | standard.
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| 224 |
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| 225 | You may add a passage of up to five words as a Front-Cover Text, and a
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| 226 | passage of up to 25 words as a Back-Cover Text, to the end of the list
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| 227 | of Cover Texts in the Modified Version. Only one passage of
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| 228 | Front-Cover Text and one of Back-Cover Text may be added by (or
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| 229 | through arrangements made by) any one entity. If the Document already
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| 230 | includes a cover text for the same cover, previously added by you or
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| 231 | by arrangement made by the same entity you are acting on behalf of,
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| 232 | you may not add another; but you may replace the old one, on explicit
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| 233 | permission from the previous publisher that added the old one.
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| 234 |
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| 235 | The author(s) and publisher(s) of the Document do not by this License
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| 236 | give permission to use their names for publicity for or to assert or
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| 237 | imply endorsement of any Modified Version.
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| 238 | @sp 1
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| 239 | @item
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| 240 | COMBINING DOCUMENTS
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| 241 |
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| 242 | You may combine the Document with other documents released under this
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| 243 | License, under the terms defined in section 4 above for modified
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| 244 | versions, provided that you include in the combination all of the
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| 245 | Invariant Sections of all of the original documents, unmodified, and
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| 246 | list them all as Invariant Sections of your combined work in its
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| 247 | license notice.
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| 248 |
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| 249 | The combined work need only contain one copy of this License, and
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| 250 | multiple identical Invariant Sections may be replaced with a single
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| 251 | copy. If there are multiple Invariant Sections with the same name but
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| 252 | different contents, make the title of each such section unique by
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| 253 | adding at the end of it, in parentheses, the name of the original
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| 254 | author or publisher of that section if known, or else a unique number.
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| 255 | Make the same adjustment to the section titles in the list of
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| 256 | Invariant Sections in the license notice of the combined work.
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| 257 |
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| 258 | In the combination, you must combine any sections entitled ``History''
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| 259 | in the various original documents, forming one section entitled
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| 260 | ``History''; likewise combine any sections entitled ``Acknowledgements'',
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| 261 | and any sections entitled ``Dedications.'' You must delete all sections
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| 262 | entitled ``Endorsements.''
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| 263 | @sp 1
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| 264 | @item
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| 265 | COLLECTIONS OF DOCUMENTS
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| 266 |
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| 267 | You may make a collection consisting of the Document and other documents
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| 268 | released under this License, and replace the individual copies of this
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| 269 | License in the various documents with a single copy that is included in
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| 270 | the collection, provided that you follow the rules of this License for
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| 271 | verbatim copying of each of the documents in all other respects.
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| 272 |
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| 273 | You may extract a single document from such a collection, and distribute
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| 274 | it individually under this License, provided you insert a copy of this
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| 275 | License into the extracted document, and follow this License in all
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| 276 | other respects regarding verbatim copying of that document.
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| 277 | @sp 1
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| 278 | @item
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| 279 | AGGREGATION WITH INDEPENDENT WORKS
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| 280 |
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| 281 | A compilation of the Document or its derivatives with other separate
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| 282 | and independent documents or works, in or on a volume of a storage or
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| 283 | distribution medium, does not as a whole count as a Modified Version
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| 284 | of the Document, provided no compilation copyright is claimed for the
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| 285 | compilation. Such a compilation is called an ``aggregate'', and this
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| 286 | License does not apply to the other self-contained works thus compiled
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| 287 | with the Document, on account of their being thus compiled, if they
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| 288 | are not themselves derivative works of the Document.
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| 289 |
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| 290 | If the Cover Text requirement of section 3 is applicable to these
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| 291 | copies of the Document, then if the Document is less than one quarter
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| 292 | of the entire aggregate, the Document's Cover Texts may be placed on
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| 293 | covers that surround only the Document within the aggregate.
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| 294 | Otherwise they must appear on covers around the whole aggregate.
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| 295 | @sp 1
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| 296 | @item
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| 297 | TRANSLATION
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| 298 |
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| 299 | Translation is considered a kind of modification, so you may
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| 300 | distribute translations of the Document under the terms of section 4.
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| 301 | Replacing Invariant Sections with translations requires special
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| 302 | permission from their copyright holders, but you may include
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| 303 | translations of some or all Invariant Sections in addition to the
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| 304 | original versions of these Invariant Sections. You may include a
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| 305 | translation of this License provided that you also include the
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| 306 | original English version of this License. In case of a disagreement
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| 307 | between the translation and the original English version of this
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| 308 | License, the original English version will prevail.
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| 309 | @sp 1
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| 310 | @item
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| 311 | TERMINATION
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| 312 |
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| 313 | You may not copy, modify, sublicense, or distribute the Document except
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| 314 | as expressly provided for under this License. Any other attempt to
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| 315 | copy, modify, sublicense or distribute the Document is void, and will
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| 316 | automatically terminate your rights under this License. However,
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| 317 | parties who have received copies, or rights, from you under this
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| 318 | License will not have their licenses terminated so long as such
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| 319 | parties remain in full compliance.
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| 320 | @sp 1
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| 321 | @item
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| 322 | FUTURE REVISIONS OF THIS LICENSE
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| 323 |
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| 324 | The Free Software Foundation may publish new, revised versions
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| 325 | of the GNU Free Documentation License from time to time. Such new
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| 326 | versions will be similar in spirit to the present version, but may
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| 327 | differ in detail to address new problems or concerns. See
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| 328 | http://www.gnu.org/copyleft/.
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| 329 |
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| 330 | Each version of the License is given a distinguishing version number.
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| 331 | If the Document specifies that a particular numbered version of this
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| 332 | License ``or any later version'' applies to it, you have the option of
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| 333 | following the terms and conditions either of that specified version or
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| 334 | of any later version that has been published (not as a draft) by the
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| 335 | Free Software Foundation. If the Document does not specify a version
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| 336 | number of this License, you may choose any version ever published (not
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| 337 | as a draft) by the Free Software Foundation.
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| 338 |
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| 339 | @end enumerate
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| 340 |
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| 341 | @unnumberedsec ADDENDUM: How to use this License for your documents
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| 342 |
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| 343 | To use this License in a document you have written, include a copy of
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| 344 | the License in the document and put the following copyright and
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| 345 | license notices just after the title page:
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| 346 |
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| 347 | @smallexample
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| 348 | @group
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| 349 | Copyright (C) @var{year} @var{your name}.
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| 350 | Permission is granted to copy, distribute and/or modify this document
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| 351 | under the terms of the GNU Free Documentation License, Version 1.1
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| 352 | or any later version published by the Free Software Foundation;
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| 353 | with the Invariant Sections being @var{list their titles}, with the
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| 354 | Front-Cover Texts being @var{list}, and with the Back-Cover Texts being @var{list}.
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| 355 | A copy of the license is included in the section entitled "GNU
|
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| 356 | Free Documentation License."
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| 357 | @end group
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| 358 | @end smallexample
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| 359 |
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| 360 | If you have no Invariant Sections, write ``with no Invariant Sections''
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| 361 | instead of saying which ones are invariant. If you have no
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| 362 | Front-Cover Texts, write ``no Front-Cover Texts'' instead of
|
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| 363 | ``Front-Cover Texts being @var{list}''; likewise for Back-Cover Texts.
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| 364 |
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| 365 | If your document contains nontrivial examples of program code, we
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| 366 | recommend releasing these examples in parallel under your choice of
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| 367 | free software license, such as the GNU General Public License,
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| 368 | to permit their use in free software.
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