Why my application icons wiggle when I press ALT key in Launchpad?

I tried Launchpad first time today and went through the common modifier keys & their combinations to see if some hidden options appear.

When I pressed ⌥ ALT all the apps started wiggling. What does it mean?


Solution 1:

Wiggle is the edit mode. (so you can delete or uninstall the apps that came from the app store)

Holding alt is the quickest way to enter edit mode.