Q:Information: - 7z is a compressed archive file format that supports several different data compression, encryption and pre-processing algorithms. The 7z format initially appeared as implemented by the 7-Zip archiver. The 7-Zip program is publicly available under the terms of the GNU Lesser General Public License. The LZMA SDK 4.62 was placed in the public domain in December 2008. The latest stable version of 7-Zip and LZMA SDK is version 16. - The term public domain has two senses of meaning. Anything published is out in the public domain in the sense that it is available to the public. Once published news and information in books is in the public domain, although they may also be copyrighted. In the sense of intellectual property, works in the public domain are those whose exclusive intellectual property rights have expired, have been forfeited, or are inapplicable. For example, the works of Shakespeare and Beethoven, and most of the early silent films, are all now in the public domain by either being created before copyrights existed or leaving the copyright term. Examples for works not covered by copyright which are therefore in the public domain, are the formulae of Newtonian physics, cooking recipes and all software before 1974. Examples for works actively dedicated into public domain by their authors are reference implementations of cryptographic algorithms, NIH's ImageJ, and the CIA's "World Factbook". The term is not normally applied to situations where the creator of a work retains residual rights, in which case use of the work is referred to as "under license" or "with permission". - The GNU Lesser General Public License (LGPL) is a free software license published by the Free Software Foundation (FSF). The license allows developers and companies to use and integrate software released under the LGPL into their own (even proprietary) software without being required by the terms of a strong copyleft license to release the source code of their own components. The license only requires software under the LGPL be modifiable by end users via source code availability. For proprietary software, code under the LGPL is usually used in the form of a shared library such as a DLL, so that there is a clear separation between the proprietary and LGPL components. The LGPL is primarily used for software libraries, although it is also used by some stand-alone applications. The license was originally called the GNU Library General Public License and was first published in 1991, and adopted the version number 2 for parity with GPL version 2. The LGPL was revised in minor ways in the 2.1 point release, published in 1999, when it was renamed the GNU Lesser General Public License to reflect the FSF's position that not all libraries should use it. Version 3 of the LGPL was published in 2007 as a list of additional permissions applied to GPL version 3. - 7 - Zip is an open - source file archiver , an application used primarily to compress files . 7 - Zip uses its own 7z archive format , but can read and write several other archive formats . The program can be used from a command - line interface , graphical user interface , or with a window - based shell integration . 7 - Zip began in 1999 and is developed by Igor Pavlov . The cross-platform version of the command - line utility , p7zip , is also available . 7 - Zip is open - source software . Most of the source code is under the GNU LGPL license . The unRAR code is under the GNU LGPL with an '' unRAR restriction '' , which states that developers are not permitted to use the code to reverse - engineer the RAR compression algorithm . What object entity has the relation of 'license' with the subject '7-zip'? Choices: - copyright - gnu lesser general public license - proprietary software - public domain
A:
gnu lesser general public license