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Թ Copyright ҧ Ҵ Copyleft ҧ

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Copyleft

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Copyleft (ͻſ) ¶֧ͧѭ͹حҵ ͧ觵ҧ Ϳ ͡ ŧ Ż ҧԧԢԷºº 㹡èӡѴԷ㹡äѴ͡ҹ ҹ ѭ͹حҵ Copyleft ͺҾء öѴ͡ Ѵŧ Ѻا Ш˹§ҹ ͹ҵͧѧѡҾǡѹ㹧ҹѴŧҨҡҹ 㨡ѹ Copyleft 觷çѺشʧͧԢԷͧ

Ҩͧѡɳоɢͧ copyleft ÷ҢͧԢԷ ԷԺҧҧ (Ѻäͧ) 顮ԢԷ, . ᷹ҢͧԢԷл§ҹͧ͡ public domain ó (蹤 ʧǹԢԷ), copyleft Ңͧö˹ͨӡѴ͹䢷ҧҹԢԷҧС Ѻͧǹ㹧ҹѹԢԷ, Ҽ 軯ԺѵԵ͹䢹 ж繡ԴԢԷ. ͹ͷ繡ԴԢԷ copyleft , , ÷¼ŧҹеͧѡԷ copyleft ѧҧ. ˵ع, ѭ͹حҵ copyleft ֧١¡ ѭ͹حҵҧͺ᷹ (reciprocal licenses).

ѭѡɳͧ Copyleft 繵ѡë (c) ѹѧѺ դ繾ɹ͡ҡõçѹѺ Copyright (ԢԷ)

Է§׹ͧ Ѻͻſ "Ԣ"
˹á䫵Է§׹ բͤ "Ԣ 2548, 2549, 2550: õ 駹"


ѵ

ǤԴͧ copyleft ҡ÷ Ԫ ʵ Ѳ Ť Lisp (Lisp interpreter) . ѷ Symbolics ͧͷҹŤ觹, ʵ ֧鵡ŧͺҹ鹹 ѷ public domain ʧǹԢԷ. ҵ ѷ Symbolics 䢻Ѻاöͧ Ť Lisp բ, ʵ ʴͧ÷Ҷ֧ǹ䢻Ѻاҹ Ѻûʸҡѷ. ѧ㹻 1984, ʵ ֧Ἱõ͵ҹСӨѴ ĵԡѲ ͧ ǧ˹Ϳ (proprietary software) ҹ, ¡ĵԡҹ áѡعͿ (en:software hoarding)[1].

ͧҡ ʵ ѹ ӨѴ ԢԷ㹻Ѩغѹ֧觷ͧ觼Դ ҧ, Ҩ֧͡䡢ͧ·ͧͺ觷ҵͧ; ҧ ѭ͹حҵԢԷ ẺͧҢͧ, ѭ͹حҵҧ ѭ͹حҵ Ẻ copyleft á Emacs General Public License[2]. 觵 ѭ͹حҵ ѺþѲһѺا з觡 GNU General Public License (GPL), ѭ͹حҵ Ẻ Ϳ Ѻҡشѹ˹

http://th.wikipedia.org/wiki/Copyleft



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