MacOS High Sierra - Touch Bar Basics
The Control Strip, at the right end of the Touch Bar, lets you adjust common settings—like brightness and volume—and ask Siri.
You can expand it to access additional settings and features. The other buttons available in the Touch Bar depend on the app you’re using or the task you’re doing.

Change the brightness or volume, or ask Siri: Tap the buttons in the Control Strip. For brightness and volume, you can also quickly flick left or right on the buttons.
Expand the Control Strip: Tap
, or press the Fn key on the keyboard (if the “Press Fn key” option in Keyboard preferences is set to expand the Control Strip).
Tap the buttons in the expanded Control Strip to access additional settings and macOS features like Mission Control and Launchpad, or to control video or music playback. For some settings—such as display brightness—you can touch and hold the button to change the setting.
To collapse the Control Strip, tap
.
Use other buttons: Tap buttons to quickly do tasks in the app you’re using. Each app is different—try it out to see what you can do. For example, here’s how the Touch Bar looks when you select a file in the Finder:
And here’s how it looks when you view a picture in the Photos app:
To add buttons to the Touch Bar in some apps, see Customize the Touch Bar.
Add emoji to your text: Tap
, then tap the emoji you want to use.