License: GNU LG, photoluminescent, or butterfly, the more pervasive the GNU General (GNU LGPL) the GNU Lesser General Public License), one of the butterfly, a free software that the Free Software Foundation has released it. This distribution type has not been written compromise between the butterfly ardent copy JP El and butterfly, easy decisions, because the distribution type, SD, and MIT, make.

this butterfly for the first time, Richard Stallman in 1991, with the consultation of legal Ibn (Eben Moglen) wrote. The latest version of LG photoluminescent version 3, which is 29 July, 2007 is published.

LG photoluminescent butterfly with a copy is weak in the sense that the restriction of copy on your software does, but other apps that only to have it link the subject to this restriction are not. However, that the restrictions on this software will remain. (While a license like JP El let to the project that permits weaker they use is not given)

El, JP el more for the library software goes to work, but some of the software independent as the license to the ... the most famous of their Mozilla Firefox and OpenOffice are.