Taking Screenshots in Mac OS X

http://guides.macrumors.com/Taking_Screenshots_in_Mac_OS_X

Shortcuts

* Command-Shift-3: Take a screenshot of the screen, and save it as a file on the desktop
* Command-Shift-4, then select an area: Take a screenshot of an area and save it as a file on the desktop
* Command-Shift-4, then space, then click a window: Take a screenshot of a window and save it as a file on the desktop
* Command-Control-Shift-3: Take a screenshot of the screen, and save it to the clipboard
* Command-Control-Shift-4, then select an area: Take a screenshot of an area and save it to the clipboard
* Command-Control-Shift-4, then space, then click a window: Take a screenshot of a window and save it to the clipboard

In Leopard, the following keys can be held down while selecting an area (via Command-Shift-4 or Command-Control-Shift-4):

* Space, to lock the size of the selected region and instead move it when the mouse moves
* Shift, to resize only one edge of the selected region
* Option, to resize the selected region with its center as the anchor point