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చి
బాటు చేసిన మార్పు: ఆంగ్ల నేంస్పేసు పేర్లు తెలుగులోకి మార్పు
చి (బాటు చేసిన మార్పు: ఆంగ్ల నేంస్పేసు పేర్లు తెలుగులోకి మార్పు)
The license [[Wikipedia]] uses grants free access to our content in the same sense as [[free software]] is licensed freely. This principle is known as '''[[copyleft]]'''. That is to say, Wikipedia content can be copied, modified, and redistributed ''so long as'' the new version grants the same freedoms to others and acknowledges the authors of the Wikipedia article used (a direct link back to the article satisfies our author credit requirement). Wikipedia articles therefore will remain free forever and can be used by anybody subject to certain restrictions, most of which serve to ensure that freedom.
 
To fulfill the above goals, the text contained in Wikipedia is copyrighted (automatically under the [[Berne Convention for the Protection of Literary and Artistic Works|Berne Convention]]) by Wikipedia contributors and licensed to the public under the '''[[GNU Free Documentation License]]''' (GFDL). The full text of this license is at [[Wikipediaవికీపీడియా:Text of the GNU Free Documentation License]]. This text should not be changed due to legal reasons.
 
:'''Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the [[Free Software Foundation]]; with no Invariant Sections, with no Front-Cover Texts, and with no Back-Cover Texts.'''
:'''A copy of the license is included in the section entitled "[[Wikipediaవికీపీడియా:Text of the GNU Free Documentation License|GNU Free Documentation License]]".'''
:'''Content on Wikipedia is covered by [[Wikipediaవికీపీడియా:general disclaimer|disclaimers]].'''
 
 
The English text of the GFDL is the only legally binding document; what follows is our interpretation of the GFDL: the rights and obligations of users and contributors.
 
<font size="+1">IMPORTANT: If you want to reuse content from Wikipedia, first read the [[#Reusers'_rights_and_obligations|Reusers' rights and obligations]] section. You should then read the [[Wikipediaవికీపీడియా:Text_of_the_GNU_Free_Documentation_License|GNU Free Documentation License]].</font>
 
== Contributors' rights and obligations ==
=== Using copyrighted work from others ===
 
All works are copyrighted unless they either fall into the [[Wikipediaవికీపీడియా:Public domain|public domain]] or their copyright is explicitly disclaimed. If you use part of a copyrighted work under "[[Wikipediaవికీపీడియా:Fair use|fair use]]", or if you obtain special permission to use a copyrighted work from the copyright holder under the terms of our license, you must make a note of that fact (along with names and dates). It is our goal to be able to freely redistribute as much of Wikipedia's material as possible, so original images and sound files licensed under the GFDL or in the [[public domain]] are greatly preferred to copyrighted media files used under fair use. See [[Wikipediaవికీపీడియా:Boilerplate request for permission]] for a form letter asking a copyright holder to grant us a license to use their work under terms of the GFDL.
 
Never use materials that infringe the copyrights of others. This could create legal liabilities and seriously hurt the project. If in doubt, write it yourself.
=== Linking to copyrighted works ===
 
Since most recently-created works are copyrighted, almost any Wikipedia article which [[Wikipediaవికీపీడియా:Cite sources|cites its sources]] will link to copyrighted material. It is not necessary to obtain the permission of a copyright holder before linking to copyrighted material -- just as an author of a book does not need permission to cite someone else's work in their [[bibliography]]. Likewise, Wikipedia is not restricted to linking only to GFDL-free or open-source content.
 
If you know that an external Web site is carrying a work in violation of the creator's copyright, do not link to that copy of the work. Knowingly and intentionally directing others to a site that violates copyright has been considered a form of [[contributory infringement]] in the United States ([http://www.law.uh.edu/faculty/cjoyce/copyright/release10/IntRes.html Intellectual Reserve v. Utah Lighthouse Ministry]). Linking to a page that illegally distributes someone else's work sheds a bad light on Wikipedia and its editors.
=== If you find a copyright infringement ===
 
If you suspect a copyright infringement, you should at the very least bring up the issue on that page's [[Helpసహాయము:Talk page|talk page]]. Others can then examine the situation and take action if needed. The most helpful piece of information you can provide is a [[URL]] or other reference to what you believe may be the source of the text.
 
Some cases will be false alarms. For example, if the contributor was in fact the author of the text that is published elsewhere under different terms, that does not affect their right to post it here under the GFDL. Also, sometimes you will find text elsewhere on the Web that was copied from Wikipedia. In both of these cases, it is a good idea to make a note in the talk page to discourage such false alarms in the future.
If some of the content of a page really is an infringement, then the infringing content should be removed, and a note to that effect should be made on the talk page, along with the original source. If the author's permission is obtained later, the text can be restored.
 
If ''all'' of the content of a page is a suspected copyright infringement, then the page should be listed on [[Wikipediaవికీపీడియా:Copyright problems]] and the content of the page replaced by the standard notice which you can find there. If, after a week, the page still appears to be a copyright infringement, then it may be deleted following the procedures on the votes page.
 
In extreme cases of contributors continuing to post copyrighted material after appropriate warnings, such users may be blocked from editing to protect the project.
=== Image guidelines ===
 
Images and photographs, like written works, are subject to [[copyright]]. Someone holds the copyright unless they have been explicitly placed in the [[Wikipediaవికీపీడియా:Public domain|public domain]]. Images on the internet need to be licensed directly from the copyright holder or someone able to license on their behalf. In some cases, [[fair use]] guidelines may allow a photograph to be used.
 
Image description pages must be tagged with a special tag to indicate the legal status of the images, as described at [[Wikipediaవికీపీడియా:Image copyright tags]]. Untagged or incorrectly-tagged images will be deleted. It is currently unclear what should happen in cases where the same image has been uploaded more than once with different respective copyright statements.
 
==== U.S. government photographs ====
Under Wikipedia's current copyright conditions, and with the current facilities of the MediaWiki software, it is only possible to include in Wikipedia external GFDL materials that contain invariant sections or cover texts, if all of the following apply,
# You are the copyright holder of these external GFDL materials (or: you have the explicit, i.e. written, permission of the copyright holder to do what follows);
# The length and nature of these invariant sections and cover texts does not exceed what can be placed in an [[wikipediaవికీపీడియా:edit summary|edit summary]];
# You are satisfied that these invariant sections and cover texts are not listed elsewhere than in the "page history" of the page where these external materials are placed;
# You are satisfied that further copies of Wikipedia content are distributed under the standard GFDL application of "with no Invariant Sections, with no Front-Cover Texts, and with no Back-Cover Texts" (in other words, for the copies derived from wikipedia, you agree that these parts of the text contributed by you will no longer be considered as "invariant sections" or "cover texts" in the GFDL sense);
 
If you want to use Wikipedia materials in your own books/articles/web sites
or other publications, you can do so, but you have to follow the GFDL. If you are simply duplicating the Wikipedia article, you must follow [[Wikipediaవికీపీడియా:Text of the GNU Free Documentation License#VERBATIM COPYING|section two]] of the GFDL on ''verbatim copying'', as discussed at [[Wikipediaవికీపీడియా:Verbatim copying]].
 
If you create a derivative version by changing or adding content, this entails the following:
 
=== Fair use materials and special requirements ===
All original Wikipedia text is distributed under the [[GNU Free Documentation License|GFDL]]. Occasionally, Wikipedia articles may include images, sounds, or text quotes used under the U.S. Copyright law "[[Wikipediaవికీపీడియా:Fair use|fair use]]" doctrine. It is preferred that these be obtained under the most free ([[libre]]) license (such as the GFDL or public domain) practical. In cases where no such images/sounds are currently available, then fair use images are acceptable (until such time as free images become available).
 
''In Wikipedia'', such "fair use" material should be identified as from an external source (on the image description page, or history page, as appropriate). This also leads to possible restrictions on the use, outside of Wikipedia, of such "fair use" content retrieved from Wikipedia: this "fair use" content does not fall under the GFDL license as such, but under the "fair use" (or similar/different) regulations in the country where the media are retrieved.
 
==If you are the owner of Wikipedia-hosted content being used without your permission==
If you are the owner of content that is being used on Wikipedia without your permission, then you may request the page be immediately removed from Wikipedia; see [[Wikipediaవికీపీడియా:Request for immediate removal of copyright violation|Request for immediate removal of copyright violation]]. You can also contact our [[wikimedia:designated agent|designated agent]] to have it permanently removed, but it may take up to a week for the page to be deleted that way (you may also blank the page and replace it work the words <nowiki>{{copyvio|URL or place you published the text}}</nowiki> but the text will still be in the page history). Either way, we will, of course, need some evidence to support your claim of ownership.
 
== See also ==
* [[Wikipediaవికీపీడియా:Copyright FAQ]]
* The [[Wikipediaవికీపీడియా:Contributing FAQ]] for questions on copyright.
* Wikipedia's [[Wikipediaవికీపీడియా:designated agent|designated agent]] under [[OCILLA]]
* [[Wikipediaవికీపీడియా:Mirrors and forks]]
* [[Wikipediaవికీపీడియా:Standard GFDL violation letter]]
* [[Wikipediaవికీపీడియా:Possible copyright infringements]]
* [[Wikipediaవికీపీడియా:Spotting possible copyright violations]]
* [[Wikipediaవికీపీడియా:Fair use]]
* [[Wikipediaవికీపీడియా:Image copyright tags]]
* [[Wikipediaవికీపీడియా:Boilerplate request for permission]]
 
Further discussion...
* [[Wikipediaవికీపీడియా:Copyright issues]]
* [[m:Wikipedia and copyright issues]]
* [[m:Avoid Copyright Paranoia]]
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