Mac Kung Fu, 2nd Edition

Tip 109

Activate Stacks and Mission Control by a Gesture

This is a neat little hack that lets you activate stacks within the Dock by hovering the mouse cursor over each stack’s icon and making the scroll gesture on a multitouch trackpad or Magic Mouse or by rolling the scroll wheel on a mouse.

Do the same trick while hovering the mouse cursor over an app icon in the Dock, and Application Windows mode of Mission Control will activate—you will see open program windows for that particular app and, with compatible apps, the app’s document history.

However, in each case, once you’ve activated the secret setting, you need to scroll up to activate it (that is, to make the stack expand) and then scroll down to deactivate it (to make the stack hide ...