How to reverse the file

  
in Windows 7 We need to use the reverse selection function when deleting files, so as to avoid the trouble of manual selection by item, but this function cannot be found in the right-click menu under Windows 7. In fact, Windows 7 is of course providing file deselection, but it is hidden. Select a file to be retained, press the Alt key, and you can find the reverse selection command from the Edit menu. After you select it, you can complete the reverse selection task.
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