After adding this ARIA tag, when the window opens, screen readers such as JAWS 10 will be aware of it and can read the message to the users.

添加此aria标记之后，当窗口打开时，JAWS 10等屏幕阅读器将能够察觉此事件，并且能够将消息读给用户。

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Here the tag contains the message that will be scrolled across the screen.

标记包含将在屏幕上滚过的消息。

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