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Preferences - Advanced

Some advanced options: whether you want to confirm the filename for each capture, whether you want to hear a sound after a grab and what sound (put them in your ~/Library/Sounds folder), if you want to see the icon in the menubar change with the timer during timed/multiple shots, if you want to add the cursor in the images, if you want to scale down the images by a constant factor or restrain them inside a certain width or height, whether to add a fixed margin when you pick a rectangle, if you want to start the multiple shots automatically after the application's launch and after how much time, if you want to use "precise" timings for multiple shots (read the warning).