Group tracks are used for grouping any number and types of tracks. One group is made up of all tracks located below the group track down to the next group track. The following functions are available:
All tracks of a group can be displayed or hidden. Click on 
to hide or on 
to display the tracks. Pressing the Shift key additionally, causes all tracks to be displayed or hidden simultaneously.
Use button 
to deactivate or activate all tracks in a group. This works even when the tracks in a group are hidden.
The area with the double arrow 
can be used to grab and shift group tracks. The tracks in a group are also shifted when they are hidden.
To open this dialog, right-click the double arrow and select Properties.
Under Colors you can select track and text color by clicking the corresponding fields next to Track and Text.
Moreover, you can also specify a Name (... to be visible in the track head) or enter some Comment.
See also