All that being said, I think saying a priest has power to forgive sins is not the correct terminology. It is more accurate to say that a properly ordained Catholic priest has the authority to absolve sins in the name of Jesus Christ.
In Windows 8, press Windows Key + PrtScn on your keyboard. This take a screenshot and saves it as a PNG file in the default Pictures folder. Windows 8 gives each shot a generic name of Screenshot, followed by a number in the order you take the shots.
Take a screen shot of the whole screen. On the keyboard press Command-Shift-3; The screen shot is taken, and it is saved as a file on the Desktop. Take a screen shot of part of the screen. On keyboard press Command-Shift-4, then drag the cross-hair pointer to select the area to capture. Continue to press the mouse button, release the keys. When you are ready to take a screen shot, release the mouse button. The screen shot is taken and it is saved as a file on the Desktop.