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Autorízase copiar, distribuir e/ou modificar este documento baixo os termos da licenza de documentación libre GNU, versión 1.2 ou calquera outra que posteriormente publique a Free Software Foundation (Fundación do Software Libre); sin seccións invariantes, nin textos de portada ou contraportada. Deutsch - English - Español - Français - Portugués - http://www.gnu.org/copyleft/fdl.html Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled "Text of the GNU Free Documentation License".