As of August 2011, Canonical requires that contributions be licensed under a harmonic contribution licensing agreement, not the copyright awarded to Canonical. [38] With the Harmony CLA, « the Canonical contributor gives the license to use their contributions. The contributor retains the copyright to the contribution, with full right to reuse, rebroadcast and subsequently modify the associated code, so that he can share this contribution with other projects. [6] FSFE may only exercise the rights and licenses granted in accordance with the principles of Free Software, as defined by the Free Software Foundations. FSFE guarantees the use of rights and licenses that are transferred in strict compliance with free software licenses, including, but without limitation, the general public gnu license (GPL) or the GNU General Public License (LGPL). In the event that FSFE violates the free software principles, all rights and licenses granted are automatically returned to the recipient and the licenses issued there are terminated and cancelled. [40] Canonical launched Project Harmony « … In order to help organizations that use contribution agreements by providing standardized variable models with clear and concise explanations » … [37] This licensing agreement (« licence ») is a mandatory agreement between you (« takers » or « you ») and the licensee (as defined in paragraph 1) for: if additional conditions, conditions, subscriptions, rights or licenses related to the software are granted by the licensee, in writing by the licensee, are agreed in writing by the licensee by the licenseee These terms are also included as a reference and are part of the license. By installing and using the software, you declare and guarantee that you have the legal capacity and authority to enter into a binding agreement to comply with the terms of that license and that the software is used only in accordance with the terms of that license and with all applicable laws. Projects for which contributors must sign the agreement include: .