Screen Capture

Got this tip from My Journey to Macintosh:

I knew that I could take a screenshot of the whole screen with Shift + Command + 3 and that I could grab a lasso with Shift + Command + 4 but I didn’t know how to just grab the contents of one window. Anyway, it turns out if you press Shift + Command + 4 and then hit Space, your cursor turns to a camera icon and you can grab just the contents of one window.