Autor: juliocesar20200413 Página 129 de 141

Version 1.1, March 2000

Copyright °c 2000 Free Software Foundation, Inc.
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Everyone is permitted to copy and distribute verbatim copies of this license
document, but changing it is not allowed.

The purpose of this License is to make a manual, textbook, or other written do-
cument free” in the sense of freedom: to assure everyone the e®ective freedom
to copy and redistribute it, with or without modifying it, either commercially
or noncommercially. Secondarily, this License preserves for the author and pu-
blisher a way to get credit for their work, while not being considered responsible
for modi¯cations made by others.

This License is a kind of copyleft,” which means that derivative works of the
document must themselves be free in the same sense. It complements the GNU
General Public License, which is a copyleft license designed for free software.
We have designed this License in order to use it for manuals for free software,
because free software needs free documentation: a free program should come
with manuals providing the same freedoms that the software does. But this

License is not limited to software manuals; it can be used for any textual work,
regardless of subject matter or whether it is published as a printed book. We
recommend this License principally for works whose purpose is instruction or
reference.

This License applies to any manual or other work that contains a notice placed
by the copyright holder saying it can be distributed under the terms of this Li-
cense. The Document,” below, refers to any such manual or work. Any member
of the public is a licensee, and is addressed as you.”
A Modi¯ed Version” of the Document means any work containing the Docu-
ment or a portion of it, either copied verbatim, or with modi¯cations and/or
translated into another language.
A Secondary Section” is a named appendix or a front-matter section of the
Document that deals exclusively with the relationship of the publishers or aut-
hors of the Document to the Document’s overall subject (or to related matters)
and contains nothing that could fall directly within that overall subject. (For
example, if the Document is in part a textbook of mathematics, a Secondary
Section may not explain any mathematics.) The relationship could be a matter
of historical connection with the subject or with related matters, or of legal,
commercial, philosophical, ethical, or political position regarding them.
The Invariant Sections” are certain Secondary Sections whose titles are de-
signated, as being those of Invariant Sections, in the notice that says that the
Document is released under this License.
The Cover Texts” are certain short passages of text that are listed, as Front-
Cover Texts or Back-Cover Texts, in the notice that says that the Document is
released under this License.
A Transparent” copy of the Document means a machine-readable copy, repre-
sented in a format whose speci¯cation is available to the general public, whose
contents can be viewed and edited directly and straightforwardly with generic
text editors or (for images composed of pixels) generic paint programs or (for
drawings) some widely available drawing editor, and that is suitable for input to
text formatters or for automatic translation to a variety of formats suitable for
input to text formatters. A copy made in an otherwise Transparent ¯le format
whose markup has been designed to thwart or discourage subsequent modi¯ca-
tion by readers is not Transparent. A copy that is not Transparent” is called
Opaque.”

Examples of suitable formats for Transparent copies include plain ASCII wit-
hout markup, Texinfo input format, LATEX input format, SGML or XML using
a publicly available DTD, and standard-conforming simple HTML designed for
human modi¯cation. Opaque formats include PostScript, PDF, proprietary for-
mats that can be read and edited only by proprietary word processors, SGML
or XML for which the DTD and/or processing tools are not generally availa-
ble, and the machine-generated HTML produced by some word processors for
output purposes only.
The Title Page” means, for a printed book, the title page itself, plus such
following pages as are needed to hold, legibly, the material this License requires
to appear in the title page. For works in formats which do not have any title
page as such, Title Page” means the text near the most prominent appearance
of the work’s title, preceding the beginning of the body of the text.

You may copy and distribute the Document in any medium, either commercially
or noncommercially, provided that this License, the copyright notices, and the
license notice saying this License applies to the Document are reproduced in
all copies, and that you add no other conditions whatsoever to those of this
License. You may not use technical measures to obstruct or control the reading
or further copying of the copies you make or distribute. However, you may accept
compensation in exchange for copies. If you distribute a large enough number
of copies you must also follow the conditions in Section 3.
You may also lend copies, under the same conditions stated above, and you may
publicly display copies.

If you publish printed copies of the Document numbering more than 100, and
the Document’s license notice requires Cover Texts, you must enclose the copies
in covers that carry, clearly and legibly, all these Cover Texts: Front-Cover Texts
on the front cover, and Back-Cover Texts on the back cover. Both covers must
also clearly and legibly identify you as the publisher of these copies. The front
cover must present the full title with all words of the title equally prominent
and visible. You may add other material on the covers in addition. Copying
with changes limited to the covers, as long as they preserve the title of the
Document and satisfy these conditions, can be treated as verbatim copying in
other respects.

You may copy and distribute a Modi¯ed Version of the Document under the
conditions of Sections 2 and 3 above, provided that you release the Modi¯ed
Version under precisely this License, with the Modi¯ed Version ¯lling the role
of the Document, thus licensing distribution and modi¯cation of the Modi¯ed
Version to whoever possesses a copy of it. In addition, you must do these things
in the Modi¯ed Version:
Use in the Title Page (and on the covers, if any) a title distinct from that
of the Document, and from those of previous versions (which should, if
there were any, be listed in the History section of the Document). You
may use the same title as a previous version if the original publisher of
that version gives permission.
List on the Title Page, as authors, one or more persons or entities respon-
sible for authorship of the modi¯cations in the Modi¯ed Version, together
with at least ¯ve of the principal authors of the Document (all of its prin-
cipal authors, if it has less than ¯ve).
State on the Title page the name of the publisher of the Modi¯ed Version,
as the publisher.
Preserve all the copyright notices of the Document.
E.4 Modi¯cations 267
Add an appropriate copyright notice for your modi¯cations adjacent to
the other copyright notices.
Include, immediately after the copyright notices, a license notice giving
the public permission to use the Modi¯ed Version under the terms of this
License, in the form shown in the Addendum below.
Preserve in that license notice the full lists of Invariant Sections and re-
quired Cover Texts given in the Document’s license notice.
Include an unaltered copy of this License.
Preserve the section entitled History,” and its title, and add to it an item
stating at least the title, year, new authors, and publisher of the Modi¯ed
Version as given on the Title Page. If there is no section entitled History”
in the Document, create one stating the title, year, authors, and publisher
of the Document as given on its Title Page, then add an item describing
the Modi¯ed Version as stated in the previous sentence.
Preserve the network location, if any, given in the Document for public
access to a Transparent copy of the Document, and likewise the network
locations given in the Document for previous versions it was based on.
These may be placed in the History” section. You may omit a network
location for a work that was published at least four years before the Do-
cument itself, or if the original publisher of the version it refers to gives
permission.
In any section entitled Acknowledgements” or Dedications,” preserve
the section’s title, and preserve in the section all the substance and tone
of each of the contributor acknowledgements and/or dedications given
therein.
Preserve all the Invariant Sections of the Document, unaltered in their text
and in their titles. Section numbers or the equivalent are not considered
part of the section titles.
Delete any section entitled Endorsements.” Such a section may not be
included in the Modi¯ed Version.
Do not retitle any existing section as Endorsements” or to con°ict in title
with any Invariant Section.
If the Modi¯ed Version includes new front-matter sections or appendices that
qualify as Secondary Sections and contain no material copied from the Docu-
ment, you may at your option designate some or all of these sections as invariant.

To do this, add their titles to the list of Invariant Sections in the Modi¯ed Version’s license notice. These titles must be distinct from any other section titles.

You may add a section entitled Endorsements,” provided it contains nothing but endorsements of your Modi¯ed Version by various parties|for example, statements of peer review or that the text has been approved by an organization
as the authoritative de¯nition of a standard.

You may add a passage of up to ¯ve words as a Front-Cover Text, and a passage of up to 25 words as a Back-Cover Text, to the end of the list of Cover Texts in the Modi¯ed Version. Only one passage of Front-Cover Text and one of Back-Cover Text may be added by (or through arrangements made by) any one entity. If the Document already includes a cover text for the same cover, previously added by you or by arrangement made by the same entity you are acting on
behalf of, you may not add another; but you may replace the old one, on explicit permission from the previous publisher that added the old one.

The author(s) and publisher(s) of the Document do not by this License give permission to use their names for publicity for or to assert or imply endorsement of any Modifed Version.

You may combine the Document with other documents released under this Li-
cense, under the terms de¯ned in Section 4 above for modi¯ed versions, provided
that you include in the combination all of the Invariant Sections of all of the
original documents, unmodi¯ed, and list them all as Invariant Sections of your
combined work in its license notice.

The combined work need only contain one copy of this License, and multiple
identical Invariant Sections may be replaced with a single copy. If there are
multiple Invariant Sections with the same name but di®erent contents, make
the title of each such section unique by adding at the end of it, in parentheses,
the name of the original author or publisher of that section if known, or else
a unique number. Make the same adjustment to the section titles in the list of
Invariant Sections in the license notice of the combined work.

In the combination, you must combine any sections entitled History” in the
various original documents, forming one section entitled History”; likewise com-
bine any sections entitled Acknowledgements,” and any sections entitled De-
dications.” You must delete all sections entitled Endorsements.”

You may make a collection consisting of the Document and other documents
released under this License, and replace the individual copies of this License
in the various documents with a single copy that is included in the collection,
provided that you follow the rules of this License for verbatim copying of each
of the documents in all other respects.
You may extract a single document from such a collection, and distribute it
individually under this License, provided you insert a copy of this License into
the extracted document, and follow this License in all other respects regarding
verbatim copying of that document.