然后可以编写建议，更新性能统计，而在进入或退出任何一个连接点时，都会自动调用建议。
You can then write advice that updates performance statistics, which can be invoked automatically whenever you enter or exit one of the join points.
这种新的更新有助于让事情变得简单，而在HTML4中有你可以使用不同的文档类型，使得这一点更加棘手。
This new update helps keep things simple; while in HTML4 there were a range of different doc types that you could use, making it a little more tricky.
而在其他情况下，您可能只想要第一个更新。
In other cases, you might always want the first update to win.
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