但成功在很大程度上取决于两件事情：关联和许可。
But success largely depends on two things: relevance and permission.
核心 ACL 类在基于与组和主体相关联的 PermissionSets 的许可操作中的运行。
The operation of the core ACL class in permitting actions based on PermissionSets associated with groups and principals.
RSS 1.0 和 RSS 2.0 这两种流行的联合格式都有其自己的方式来将这些许可与提要（feed）相关联。
The popular syndication formats RSS 1.0 and RSS 2.0 each have their own ways of associating such licenses with feeds.
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