This service implements an "event stack" that contains the current set of event handlers.

这项服务会实作“事件堆叠”，其中包含目前的事件处理常式集。

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Events received from a remote node do not include user or process information or stack trace, even if the event producer supports it.

从远程节点接收到的事件不包含用户、进程信息或栈追踪，即使事件创造器支持。

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When adding the backward and forward button handlers, you will also see that this function is called to update the page from the event IDs we have been saving to the history stack.

添加后退和前进按钮处理程序时，还将调用该函数，根据保存到历史堆栈中的事件ID来更新页面。

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In the event of an IPO, all preferred stock becomes common stock, and the preference stack goes away.

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