1. Command+Shift+3
To capture the entire desktop, and then will be automatically saved as a PNG file on your desktop.
2. Command+Control+Shift+3
To copy the entire desktop, and then will be placed on your clipboard for you to paste into another program.
3. Command+Shift+4
To capture a portion of the desktop. A cross-hair cursor will appear and you can click and drag to select the area you wish to capture. When you release the mouse button, the screen shot will be automatically saved as a PNG file on your desktop. (The file is saved as PDF in Mac OS 10.3 and earlier.)
4. Command+Shift+4, then press the Spacebar
To capture a specific application window. The cursor will change to a camera, and you can move it around the screen. As you move the cursor over an application window, the window will be highlighted. The entire window does not need to be visible for you to capture it. When you have the cursor over a window you want to capture, just click the mouse button and the screen shot will be saved as a PNG file on your desktop. (The file is saved as PDF in Mac OS 10.3 and earlier.)
