大多数良好的技术文档都包含一般称为屏幕捕获或屏幕快照的图像，它们显示在应用程序中出现的窗口和对话框。
Most good technical documentation includes images, generically known as screen captures or screen shots, that show Windows and dialogs as they appear in the application that is being documented.
门户其实就是一个人员、内容和应用程序的窗口。
A portal is really just a window to people, content, and applications.
在某些情况下，可能希望捕获整个屏幕，从而同时显示多个应用程序窗口的内容和位置。
In some cases, you may want to capture an entire screen to show the contents and placement of multiple application Windows simultaneously.
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