How the XP system views the format of a file

1. Double-click to open any folder (small set Open is D disk), click on the toolbar "Tools", select "Folder Options", as shown in the following figure.

2. Switch to the "View" tab, remove "Hide known file type extension" Before the hook, click the OK button to save exit.

3. After the completion of the file can clearly see the suffix name displayed, that is, the representative of the file format.

If you need to hide again, remove the hook in the second step and click the check again to save the exit

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