Windows第一次把整个屏幕全部用于显示应用程序的内容，默认没有窗口边框、菜单、工具条这些东西。
This marks the first version of Windows where the entire screen is dedicated to the content that applications want to display. By default there are no window frames, menus, or toolbars.
代码(向您显示该页面的应用程序)、内容(XML文档)和显示(样式表(style sheet))是不同的。
The code (application that shows you this page), content (the XML document) and presentation (style sheets) are different.
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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