Storage of creation and change date, user ID , classify attribute, etc .

创建和更改日期，用户id ，分级属性，等的存储。

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If you detect multiple versions of your application, provide information about each, such as the location and creation date, so that the user can choose which one to update.

如果您检查到您程序的多个版本，提供每个版本的具体信息，如位置，创建日期等，以方便用户选择更新哪个程序。

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