当您绘制曲线图且需要不断对该图进行修改以添加想要的特征时，此命令会非常有用。
This can be very useful when you are composing a graph and need to keep changing it to add desired features.
当你在iXpenseIt中输入所有数据后，你可以选择三种查看方式：摘要、条形图和曲线图。
Once you've got all your expenses in the app, you've got the choice of three different viewing options: summaries, bar charts and graphs.
然后，我们绘制不同的曲线图，从而它们可以每个图占据屏幕的四分之一。
Then, we plot the different graphs so that they each take up one fourth of the screen.
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