Use this key to take screenshot of your computer screen. 

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CTRl + Shift + S

Delete the selected item permanently, Skipping recycle bin. 

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Shift + Delete

Rename any selected file easily. No need to double click to rename the file.

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F2

Easy to lock your computer. It is best for emergency.

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Windows key + L

Easy to lock your computer. It is best for emergency.

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Windows key + L

Open the clipboard with the help of this simple key

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Windows key + V