Alt+PrintScn - take a screenshot of the current window only
Shift+PrintScn - select a specific area of the screen
Ctrl+PrintScn - save the screenshot to the clipboard
OS X's Spotlight is a great tool for finding that file you lost or launching apps, but it can do a lot more than just find the occasional file. Here are some of the coolest Spotlight tips, features, and shortcuts to make your Mac a time-saving, file-searching powerhouse.