处理同一站点中跨文档事件的安全问题比较困难。

It can be difficult to work with security issues across documents event on the same site.

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getSystemId返回当前文档事件的系统标识。

GetSystemId returns the system identifier for the current document event.

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getPublicId返回当前文档事件的公共标识。

GetPublicId returns the public identifier for the current document event.

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