在图表中移动光标时，打开工具提示可以让您即时查看图表中显示的指标的基本信息。

Turning on tooltips allows you to instantly see some basic information about the metrics displayed in the chart as you move your cursor over the chart.

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如果您想处理所有类型的交通工具，那么您就可以用这种重构将所有对Automobile的引用都变成对Vehicle的引用(参看图5)。

If you wanted to be able to handle all types of vehicles, you could use this refactoring to change references to Automobile to references to vehicle (see Figure 5).

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在我的系统里，我喜欢把所有工具都放在"prg"目录下，所以Flex SDK在我的Windows电脑里就放在"C:\Prg\flex-4.5"的位置；请看图1-1。

On my system, I tend to put all my tools under a "prg" directory, so on my Windows box it rests at "C:\Prg\flex-4.5"; see Figure 1-1.

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