Greasemonkeyのライセンスが分からない

=== START LICENSE ===

Copyright 2004-2007 Aaron Boodman
Contributors: See contributors list in install.rdf

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

Note that this license applies only to the Greasemonkey extension source
files, not to the user scripts which it runs. User scripts are licensed
separately by their authors.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

=== END LICENSE ===

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

license.txt

英語が分かりません orz

  • 無料であること
  • どの人もドキュメントを含むこのソフトウェアを複製できる
  • 制限無しに取引ができる
  • 使用、複製、更新、結合、公開、配布、再実施権*1、販売が制限無くできる
  • このソフトウェアを提供された人も上記が可能
  • 注記

って感じで良いのだろうか。もし合っているなら、かなり緩いというか何やってもOK的な感じですね。GPLとかにしてしまうとユーザスクリプト側にも影響してしまうから、とかそういう配慮があるのかな。

*1:sublicenseを和訳した結果だが、意味が分からない