Alice pour mettre un logiciel, sous copyleft, doit :
mettre un copyright sur le logiciel
ajouter des conditions de distribution, outil légal qui donne a chacun le droit d ’utiliser, de modifier et de redistribuer le code du programme. ( choisir sa licence)
Si par exemple, Alice choisit la licence GPL, voici le genre de copyright :
Alice, a lexical analyzer for digital brain.
Copyright (C) 2024 Alice Noname.
This program 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 2 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; see the file COPYING. If not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.