Ví dụ về việc sử dụng Copyleft trong Tiếng anh và bản dịch của chúng sang Tiếng việt
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Weak and strong copyleft.
Types of copyleft and relation to other licenses.
Weak and strong copyleft.
Since copyleft ensures that later generations of the software grant the freedom to modify the code, this is"free software".
Listen and download hq, copyleft mp3 music.
Mọi người cũng dịch
One of the primary aspects of the GPL is that it uses something known as copyleft.
Transmission of freedoms(often called copyleft or share-alike), which requires that derivative works remain free.
Roger added his name and preserved the COPYLEFT Notice.
Many free software licenses are not copyleft licenses because they do not require the licensee to distribute derivative works under the same license.
Users of these systems generally find the same set of software to be acceptable,but sometimes see copyleft as restrictive.
The most common free software license, the GNU General Public License(GPL),is a form of copyleft, and is used for the Linux kernel and many of the components from the GNU Project.
It is, thus, not possible to distribute a program asproprietary software if it is derived from code from a copyleft released program.
Strong Copyleft: When a software project contains some of your code, the project as a whole must be distributed under your licence, if it is distributed at all.
The listing began with the usual title,author's name and date but it also had"@COPYLEFT ALL WRONGS RESERVED".
The central idea of copyleft is that we give everyone permission to run the program, copy the program, modify the program, and distribute modified versions--but not permission to add restrictions of their own.
RawTherapee is cross-platform, free and open source image editing software, meaning you can use it free of charge, wherever you like on whatever hardware you like,as long as you abide by the copyleft GPLv3 license.
Partial copyleft exempts some parts of the work from the copyleft provisions, thus permitting distribution of some modifications under terms other than the copyleft license, or in some other way does not impose all the principles of copylefting on the work.
In common with the Creative Commons share-alike licensing system, GNU's Free Documentation License allows authors to apply limitations to certain sections of their work,exempting some parts of their creation from the full copyleft mechanism.
Unless the material is either public domain,carries a copyleft notice compatible with the Creative Commons Attribution-Sharealike 3.0 Unported License, or you have explicit permission to use it, please don't copy and paste from other web sites into Wikipedia.
Copyleft also include a key addition provision that must be followed in order to copy or modify the software, that requires the user to provide source code for the work and to distribute their modifications under the same license(or sometimes a compatible one);
Although the hardware andsoftware designs are freely available under copyleft licenses, the developers have requested the name Arduino to be exclusive to the official product and not be used for derived works without permission.
It does include a weak copyleft requirement that changes to files managed by the project must be published, but it allows developers complete freedom to use the compiled binaries any way they want, including mixing them with non-open-source code to create proprietary products.
Instead of allowing a work to fall completely into the publicdomain(where no copyright restrictions are imposed), copyleft allows an author to impose some but not all copyright restrictions on those who want to engage in activities that would otherwise be considered copyright infringement.
Wheeler argues that the copyleft provided by the GPL was crucial to the success of Linux-based systems, giving the programmers who contributed to the kernel the assurance that their work would benefit the whole world and remain free, rather than being exploited by software companies that would not have to give anything back to the community.[13].
This also means that, uniquely, code under the EUPL v1.1 effectively has variable copyleft strength, depending upon whether it is taken up under the strong copyleft of the EUPL or distributed within a larger work under the weaker copyleft of the Common Public License or the Eclipse Public License.
While the hardware and software designs are available under copyleft licenses, the developers have expressed a desire that the name"Arduino"(or derivatives thereof) be exclusive to the official product and not be used for derivative works without permission.
However, other scholars and free culture and copyleft activists argue that the industry figures are grossly inflated, because some individuals who obtain pirated copies would not have purchased the content, even if the opportunity for piracy did not exist.
This involves releasing your software under a strong copyleft licence such as the GNU GPL, and also making available a version under an alternative licence, thus allowing users who do not wish to be bound by the GNU GPL to pay for the non-copyleft version.
Attendees of the half-day,three-session seminar will learn about: copyleft and other important terms in the GNU General Public License; best practices in the free software licensing enforcement process; and ethical considerations important to any lawyer that is advising free software users and developers.