Lion - Dock Indicators

Previous versions of OS X had a white dot underneath the application in the Dock that indicated that it was open. By default, Lion has that turned off but you can turn it back on with just a checkbox.


Step 1:
Go to Apple Menu and open System Preferences.


Step 2:
Click on the Dock icon.


Dock tab
Click on the photo to enlarge.


Step 3:
Turn on the "Show indicator lights for open applications".