今天從 InfoQ 得知微軟近日將 Enterprise Library 4.0 的開放原始碼授權變更為微軟公眾授權 (Microsoft Public License) (Ms-PL)，有興趣的人可以到 CodePlex 的 patterns & practices – Enterprise Library 下載。
今天因為颱風天也無法出門，也就也花了些時間研究了一下 Microsoft Public License (Ms-PL) 授權條款，原來 Ms-PL 是 OSI (自由軟體組織) 所核准過的授權條款，不過上網怎麼找都找不太到中文的說明，索性就自己翻譯一下了，但還是有些地方看不是很明白，希望標紅字的部分可以請各位看倌指導。
以下都是以我自行理解後翻譯而成，僅供參考，本人不保證所有中文翻譯能完整或精確表達原文的意思，翻得不好請不要見怪，歡迎多多指教。
Microsoft Public License (Ms-PL)
微軟公眾授權 (Ms-PL)
Published: October 12, 2006
發行於2006年10月12日
This license governs use of the accompanying software. If you use the software, you accept this license. If you do not accept the license, do not use the software.
此授權用於管理附帶軟體的使用權利，如果你使用了此軟體代表您接受了本授權；若您不接受此授權，請勿使用此軟體。
1. Definitions
1. 定義
The terms "reproduce," "reproduction," "derivative works," and "distribution" have the same meaning here as under U.S. copyright law.
以下詞彙 "reproduce," "reproduction," "derivative works," and "distribution" 在美國著作權法中擁有相同的意思。
A "contribution" is the original software, or any additions or changes to the software.
"作品"(contribution)代表原始的，或任何附加過的，或任何經過變更的軟體。
A "contributor" is any person that distributes its contribution under this license.
"參與作者"(contributor)代表任何在此授權下發布此作品的個人。
"Licensed patents" are a contributor's patent claims that read directly on its contribution.
"已授權專利" 是參與作者的專利聲明，請直接閱讀該作品的相關授權聲明。
2. Grant of Rights
2. 授權
(A) Copyright Grant- Subject to the terms of this license, including the license conditions and limitations in section 3, each contributor grants you a non-exclusive, worldwide, royalty-free copyright license to reproduce its contribution, prepare derivative works of its contribution, and distribute its contribution or any derivative works that you create.
(A) 著作授權：依照此授權的條款，包括第３段所列之授權條件與限制，每位參與作者授予你非專屬權利的、全球性的、與著作版權免權利金的權利，讓你能夠重製作品、依據作品進行衍生開發、已經散布作品、或任何由你開發出的衍生作品。
(B) Patent Grant- Subject to the terms of this license, including the license conditions and limitations in section 3, each contributor grants you a non-exclusive, worldwide, royalty-free license under its licensed patents to make, have made, use, sell, offer for sale, import, and/or otherwise dispose of its contribution in the software or derivative works of the contribution in the software.
(B) 專利授權：依照此授權的條款，包括第３段所列之授權條件與限制，每位參與作者授予你非專屬權利的、全球性的、與已授權的專利免權利金的權利，讓你能夠製造、使用、銷售、經銷、或此軟體作品或衍生軟體作品的配置。
3. Conditions and Limitations
3. 條件與限制
(A) No Trademark License- This license does not grant you rights to use any contributors’ name, logo, or trademarks.
(A) 沒有商標許可：本授權並無授權您使用參與作者之姓名、標誌、或商標等權利。
(B) If you bring a patent claim against any contributor over patents that you claim are infringed by the software, your patent license from such contributor to the software ends automatically.
(B) 如果你因為聲明該軟體違法了你的專利而導致你對任何參與作者提出專利主張，你的專利從該參與作者到此軟體自動終止。
(C) If you distribute any portion of the software, you must retain all copyright, patent, trademark, and attribution notices that are present in the software.
(C) 如果你散佈此軟體的任何部分，你必須取得保留所有出現在軟體中的「著作權宣告」、「專利權宣告」、「商標權宣告」、以及「屬性公告宣告」。
(D) If you distribute any portion of the software in source code form, you may do so only under this license by including a complete copy of this license with your distribution. If you distribute any portion of the software in compiled or object code form, you may only do so under a license that complies with this license.
(D) 如果你以原始碼的形式散佈此軟體的任何部分，你可以只將此授權條款的完整副本包含在你的散佈中。如果你以編譯過的或以物件程式碼的形式散佈此軟體的任何部分，你的軟體授權只可在遵循此授權條款的情況下發行。
(E) The software is licensed “as-is.” You bear the risk of using it. The contributors give no express warranties, guarantees or conditions. You may have additional consumer rights under your local laws which this license cannot change. To the extent permitted under your local laws, the contributors exclude the implied warranties of merchantability, fitness for a particular purpose and non-infringement.
(E) 此軟體是以 "目前的狀態" 發行，你必須自行承擔使用此軟體的風險。所有參與作者並沒有給予明確的保固、保證、或任何條件。也許在你的當地法律會有額外的消費者權利等議題，但你無法變更此授權的內容。在你當地法律允許的範圍內，所有參與作者排除所有具有商業性的隱含保固，或針對特定用途的適用性，以及非侵權。
以上紅字的部分是我想很久還是不太肯定的部分，希望看得懂的人可以給點建議。至於其他的部分，若有出件錯誤的地方也歡迎提出指正。