mame/docs/legal/LGPL-2.1

GNU Lesser General Public License
Version 2.1, February 1999

    Copyright (C) 1991, 1999 Free Software Foundation, Inc.
    59 Temple Place, Suite 330, Boston, MA 02111-1307 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.  It also
    counts as the successor of the GNU Library Public License,
    version 2, hence the version number 2.1.]

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END OF TERMS AND CONDITIONS

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That's all there is to it!