copyleft

(legal)/kop'ee-left/ (A play on "copyright") The copyrightnotice and General Public License applying to the works ofthe Free Software Foundation, granting reuse andreproduction rights to everyone.

Typically copyrights take away freedoms; copyleft preservesthem. It is a legal instrument that requires those who passon a program to include the rights to use, modify, andredistribute the code; the code and the freedoms becomelegally inseparable.

The copyleft used by the GNU Project combines a regularcopyright notice and the "GNU General Public License" (GPL).The GPL is a copying license which basically says that youhave the aforementioned freedoms. The license is included ineach GNU source code distribution and manual.

See also General Public Virus.

copyleft

A requirement in the GNU GPL software license and other "free" software licenses that anyone who redistributes the software does so under the same license and also includes the source code. The "free" means free of restrictions (see free software). The copyleft clauses were written to support copyright laws, not eliminate them.

Strong vs. Weak
A "strong copyleft" license, such as the GNU GPL license, applies to all derived works and software components in the package. A "weak copyleft" license, such as the GNU Lesser GPL, applies only to the original copylefted work.

Full vs. Partial
"Full copyleft" means that all of the work may be modified, whereas "partial copyleft" restricts some parts of the work from being altered. See GNU General Public License and copyright.

单词	copyleft
释义	copyleft cop·y·left C0633450 (kŏp′ē-lĕft′)n. A form of licensing that encourages the distribution of software at no charge for noncommercial uses. [After copyright.] cop′y·left′ed (-lĕf′tĭd) adj. copyleft (ˈkɒpɪˌlɛft) n (Law) law a form of licensing that imposes fewer restrictions on the use of a work than copyright copyleft A distribution agreement that allows everybody who receives a copy of the work in question to freely distribute or adapt it on the condition that they do not claim copyright on it for themselves. copyleft copyleft (legal)/kop'ee-left/ (A play on "copyright") The copyrightnotice and General Public License applying to the works ofthe Free Software Foundation, granting reuse andreproduction rights to everyone. Typically copyrights take away freedoms; copyleft preservesthem. It is a legal instrument that requires those who passon a program to include the rights to use, modify, andredistribute the code; the code and the freedoms becomelegally inseparable. The copyleft used by the GNU Project combines a regularcopyright notice and the "GNU General Public License" (GPL).The GPL is a copying license which basically says that youhave the aforementioned freedoms. The license is included ineach GNU source code distribution and manual. See also General Public Virus. copyleft A requirement in the GNU GPL software license and other "free" software licenses that anyone who redistributes the software does so under the same license and also includes the source code. The "free" means free of restrictions (see free software). The copyleft clauses were written to support copyright laws, not eliminate them. Strong vs. Weak A "strong copyleft" license, such as the GNU GPL license, applies to all derived works and software components in the package. A "weak copyleft" license, such as the GNU Lesser GPL, applies only to the original copylefted work. Full vs. Partial "Full copyleft" means that all of the work may be modified, whereas "partial copyleft" restricts some parts of the work from being altered. See GNU General Public License and copyright. MedicalSeeqiFinancialSeecopyrightAcronymsSeeCL
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