《SIL开源字型授权》由SIL国际制定，简称SIL OFL 或OFL，初版于2005年发布，OFL协议允许自由地使用、研究、修改和再分发授权的字体，如今已是诸多开源字型的首选授权条款，思源系列亦是其中之一。原文版权为SIL国际所有，SIL国际允许在满足一定要求的前提下发布非官方译文。
本译文仅供参考，并不具有法律效力，本译文旨在帮助不熟悉英语的用户更好地理解，如有任何差异，请参阅英语原文：https://openfontlicense.org/。
SIL开源字型授权1.1（中文翻译）
本字体软件根据SIL开放式字体许可证1.1版获得许可。
此许可证复制如下，也可从以下网址获得常见问题解答：
http://scripts.sil.org/OFL
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SIL开放式字体许可证版本1.1–2007年2月26日
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序言
开放式字体许可证（OFL）的目标是促进世界范围内协作式字体项目的发展，支持学术界和语言界的字体创建工作，并提供一个自由开放的框架，在这个框架中，字体可以与其他人合作共享和改进。
OFL允许许可字体自由使用、研究、修改和重新分发，只要它们不是自己出售的。字体，包括任何衍生作品，可以捆绑、嵌入、重新分发和/或与任何软件一起出售，前提是衍生作品不使用任何保留名称。但是，字体和衍生产品不能在任何其他类型的许可下发布。在本许可证下保留字体的要求不适用于使用字体或其衍生物创建的任何文档。
定义
“字体软件”是指版权持有人根据本许可证发布的文件集，并清楚地标记为该文件集。这可能包括源文件、构建脚本和文档。
“保留字体名称”指版权声明后指定的任何名称。
“原始版本”是指版权所有者分发的字体软件组件的集合。
“修改版本”是指通过添加、删除或替换（部分或全部）原始版本的任何组件、更改格式或将字体软件移植到新环境而产生的任何衍生产品。
“作者”是指任何设计师、工程师、程序员、技术作家或其他对字体软件作出贡献的人。
许可和条件
特此免费授予获得字体软件副本的任何人使用、研究、复制、合并、嵌入、修改、重新分发和出售字体软件的修改和未修改副本的权限，但须符合以下条件：
1） 字体软件及其任何单个组件（原始版本或修改版本）均不得自行销售。
2） 字体软件的原始或修改版本可与任何软件捆绑、重新分发和/或出售，前提是每份副本包含上述版权声明和本许可证。这些可以作为独立文本文件、人类可读的标题或文本或二进制文件中的适当机器可读元数据字段包括，只要这些字段可以被用户轻松查看。
3） 除非获得相应版权持有人的明确书面许可，否则字体软件的任何修改版本均不得使用保留字体名称。此限制仅适用于呈现给用户的主字体名称。
4） 版权持有人或字体软件作者的姓名不得用于宣传、背书或宣传任何修改版本，除非确认版权持有人和作者的贡献或获得其明确书面许可。
5） 字体软件，无论是修改的还是未修改的，无论是部分还是全部，都必须根据本许可证进行分发，并且不得根据任何其他许可证进行分发。本许可证对字体的要求不适用于使用字体软件创建的任何文档。
终止授权
如果不满足上述任何条件，本许可证将无效。
免责声明
字体软件按“原样”提供，无任何明示或暗示的担保，包括但不限于对适销性、适用于特定用途以及不侵犯版权、专利、商标或其他权利的任何担保。在任何情况下，版权持有人均不对因使用或无法使用字体软件或字体软件的其他交易而产生的任何索赔、损害赔偿或其他责任承担责任，包括任何一般、特殊、间接、附带或后果性损害赔偿，无论是合同诉讼、侵权诉讼还是其他诉讼。
SIL Open Font License 1.1(英文原版)
This Font Software is licensed under the SIL Open Font License, Version 1.1.
This license is copied below, and is also available with a FAQ at:
http://scripts.sil.org/OFL
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SIL OPEN FONT LICENSE Version 1.1 – 26 February 2007
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PREAMBLE
The goals of the Open Font License (OFL) are to stimulate worldwide development of collaborative font projects, to support the font creation efforts of academic and linguistic communities, and to provide a free and open framework in which fonts may be shared and improved in partnership with others.
The OFL allows the licensed fonts to be used, studied, modified and redistributed freely as long as they are not sold by themselves. The fonts, including any derivative works, can be bundled, embedded, redistributed and/or sold with any software provided that any reserved names are not used by derivative works. The fonts and derivatives, however, cannot be released under any other type of license. The requirement for fonts to remain under this license does not apply to any document created using the fonts or their derivatives.
DEFINITIONS
“Font Software” refers to the set of files released by the Copyright Holder(s) under this license and clearly marked as such. This may include source files, build scripts and documentation.
“Reserved Font Name” refers to any names specified as such after the copyright statement(s).
“Original Version” refers to the collection of Font Software components as distributed by the Copyright Holder(s).
“Modified Version” refers to any derivative made by adding to, deleting, or substituting — in part or in whole — any of the components of the Original Version, by changing formats or by porting the Font Software to a new environment.
“Author” refers to any designer, engineer, programmer, technical writer or other person who contributed to the Font Software.
PERMISSION & CONDITIONS
Permission is hereby granted, free of charge, to any person obtaining a copy of the Font Software, to use, study, copy, merge, embed, modify, redistribute, and sell modified and unmodified copies of the Font Software, subject to the following conditions:
1) Neither the Font Software nor any of its individual components, in Original or Modified Versions, may be sold by itself.
2) Original or Modified Versions of the Font Software may be bundled, redistributed and/or sold with any software, provided that each copy contains the above copyright notice and this license. These can be included either as stand-alone text files, human-readable headers or in the appropriate machine-readable metadata fields within text or binary files as long as those fields can be easily viewed by the user.
3) No Modified Version of the Font Software may use the Reserved Font Name(s) unless explicit written permission is granted by the corresponding Copyright Holder. This restriction only applies to the primary font name as presented to the users.
4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font Software shall not be used to promote, endorse or advertise any Modified Version, except to acknowledge the contribution(s) of the Copyright Holder(s) and the Author(s) or with their explicit written permission.
5) The Font Software, modified or unmodified, in part or in whole, must be distributed entirely under this license, and must not be distributed under any other license. The requirement for fonts to remain under this license does not apply to any document created using the Font Software.
TERMINATION
This license becomes null and void if any of the above conditions are not met.
DISCLAIMER
THE FONT SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM OTHER DEALINGS IN THE FONT SOFTWARE.