How to make applications minimize into their Dock icon
You can make save a lot of clutter from the Dock by making applications minimize into their own Dock icon. Here’s how to enable this:
* Launch System Preferences
* Click on the “Dock” icon
* Select the checkbox next to “Minimize windows into application icon”
* Close System Preferences
Changes take effect immediately, all apps are now minimized into their Dock icon and can be retrieved by either clicking on the app icon within the Dock or right-clicking the Dock app icon and selecting the window directly. Yes, we have covered this tip before but it was by changing the minimize behavior via the command line, I find it much more simple to do this tricks through the GUI whenever possible.
Note this is a Snow Leopard (10.6) only feature.