Screen capture

To capture a screen image in Apple OS X, you have two options. Firstly, to capture an image of your entire screen, select Command-Shift-3. You will hear a camera click sound and a PNG file will be created on your desktop containing the image. To capture a particular section of your screen, select Command-Shift-4. Your cursor turns in to a crosshair, now just click and drag your mouse to select the part of the screen you want to capture. When you let go of the mouse button, you will hear the same camera click sound and, as above, a PNG file will be created on your desktop containing the captured image.