与许多其他开源许可一样，这个许可允许用户根据需求使用、修改和分发该软件。
Like most open source licenses, it allows the software to be used, modified, and distributed by users as required.
这些服务作为免费的软件下载提供，任何用户都可以使用和修改它们（见 参考资料）。
These services are available as a free software download for any customer to use and modify as they wish (see Resources).
当然，最明显的一点是，源代码必须可用，从而用户可以自由地修改和重新发布软件。
The most obvious right, of course, is that the source code must be made available so users are free to modify and redistribute the software.
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