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Turning on “Minimize windows into an application icon” is easy. First, click on System Preferences > Dock. Next, check the box next to “minimize windows into an application icon”. With this change in effect, your Dock will no longer grow in size as you minimize applications. You can right-click on a Dock icon to see its minimized windows. Restore a minimized window by clicking on its title in the list.
Turn Dock Hiding On
Now that you have the Dock in the ideal position and have it cleaned up and appropriately sized, it’s time to activate the hiding feature. This will make the Dock appear only when you move the mouse pointer to the edge of the screen. Moving the pointer away hides the Dock again. This allows you to get the most out of a small MacBook screen. Open windows will be able to fully expand to the right or left.
First, move the mouse pointer over the divider on the Dock. When you see the double-sided arrow, right-click on the dock. A menu of options is displayed. Click on “Turn Hiding On”. Once you move the pointer off the Dock, it will disappear. You can also turn on Dock hiding by clicking on System Preferences > Dock. Next, check the box next to “Automatically hide and show the Dock”.
Speed up Dock Hiding
Mac OS X and macOS implement a small delay when showing and hiding the Dock. It’s probably done so that it doesn’t pop up instantly if you accidentally move the pointer to the trigger area. The reality is, it’s not the best behavior for most people. You’re probably coordinated enough to show and hide the dock intentionally. Fortunately, you can use some handy terminal commands to speed up the dock’s hiding behavior.
Terminal is an application that allows users to interact with OS X and macOS at a deeper level. It’s a very powerful tool, but it’s not user-friendly. First, launch the Terminal app. If it’s not on your Dock, click on the magnifying glass icon on the top right of your screen, and type in “terminal”. You’ll probably see the terminal app presented as the top search result before you finish typing. Press the return key to launch the app. A window with some text will appear. Copy and paste the following text into the Terminal window:
defaults write com.apple.dock autohide-time-modifier -int 0
Press the return key to run the command. This will set the automatic show/hide delay timer to 0, which makes it show and hide instantly. Next, we want to restart the Dock so the changes take effect immediately. Copy and paste the following text into the Terminal window:
Press the return key to run the command. This will reset the Dock, putting the change you made previously into effect immediately.
If you move the Dock, you may need to rerun these two commands again. I found that moving it from the left to the right caused it to revert to the default delay time. (continue…)