These fonts are the property of SIL International (http://www.sil.org).
They are distributed as copyrighted freeware.

You may use this software without any charge and may distribute it, as is,
to others. Commercial distribution of this software is restricted without
prior written permission. If you wish to distribute this software
commercially, contact SIL for details on obtaining a license. You may not
rent or lease the software, nor may you modify, adapt, translate, reverse
engineer, decompile, or disassemble the software. You may not make
derivative fonts from this software. THE SOFTWARE AND RELATED FILES ARE
PROVIDED "AS IS" AND WITHOUT WARRANTY OF ANY KIND.