GNU LilyPond is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
A copy of the license is contained in the file COPYING.
The following exceptions apply:
* It does not apply to the documentation files (contained in
the directory tree Documentation/). The documentation is
covered in the file LICENSE.DOCUMENTATION.
* It does not apply to ly/articulate.ly, which is only licensed
under the GPL version 3 (not any later versions).
* The files under mf/ form a font, and this font is dual-licensed
under the GPL+Font exception and the SIL Open Font License (OFL).
A copy of the OFL is in the file LICENSE.OFL.
The font exception for the GPL stipulates the following exception:
If you create a document which uses fonts included in LilyPond,
and embed this font or unaltered portions of this font into the
document, then this font does not by itself cause the resulting
document to be covered by the GNU General Public License. This
exception does not however invalidate any other reasons why the
document might be covered by the GNU General Public License.
If you modify one or more of the fonts, you may extend this
exception to your version of the fonts but you are not obliged
to do so. If you do not wish to do so, delete this exception
statement from your version.