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Category:Copyleft

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This is an old revision of this page, as edited by Lquilter (talk | contribs) at 05:04, 1 November 2006 (added category). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

This category is for articles about licenses which:

  1. Contrary to the usual application of copyright law, they aim to enable each recipient to help themself and to cooperate with others, and
  2. Requires that modified versions be distributed wholly under the same licence ("share and share alike")

Note: this category differs substantially from Category:free software licenses in that it is not limited to software, and not all free software licenses are copyleft (some are permissive, like those of BSD, X11, and MIT).