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Valid-License-Identifier: LGPL-2.1 Valid-License-Identifier: LGPL-2.1+ SPDX-URL: https://spdx.org/licenses/LGPL-2.1.html Usage-Guide: To use this license in source code, put one of the following SPDX tag/value pairs into a comment according to the placement guidelines in the licensing rules documentation. For 'GNU Lesser General Public License (LGPL) version 2.1 only' use: SPDX-License-Identifier: LGPL-2.1 For 'GNU Lesser General Public License (LGPL) version 2.1 or any later version' use: SPDX-License-Identifier: LGPL-2.1+ License-Text: GNU LESSER GENERAL PUBLIC LICENSE Version 2.1, February 1999 Copyright (C) 1991, 1999 Free Software Foundation, Inc. 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. [This is the first released version of the Lesser GPL. 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