您希望允许用户从课程目录中选择单个课程。
You want to allow the user to select a single course from the course directory.
但是也向模式作者自然地表达他们希望允许的内容提出了挑战。
But it also challenges schema authors to naturally express the content they wish to allow.
是否希望允许新程序访问上一版本可以访问的密钥链项(比如密码)？
Do you want to allow the new program access to keychain items (such as passwords) that the previous version had access to?
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