There are various ways of highlighting tracks depending on the situation:
Simply click the track head of a track. Marked tracks can be recognized by a yellow bar in the track head.
To highlight several tracks, right-click a track head and choose Selection and the corresponding range for selection or highlighting. Following this, the open tracks are highlighted. Any grouped tracks are not highlighted.
In order to mark additional tracks, click the track heads of other tracks while pressing and holding the Ctrl key.
Press and hold the Shift key while clicking one particular track head to mark all tracks of a particular track type.
If you want to mark all tracks, press Ctrl + Shift while clicking one track head.
If you want a track to be unmarked, click the track head while holding the Ctrl key. Unmark or deselect several tracks simultaneously by holding Ctrl + Shift keys while clicking a marked track head. As an alternative, you can also click the dark gray area below the last track head. This causes all marked tracks to be deselected.
Please bear in mind that only visible tracks can be marked or selected. Tracks that were hidden by creating a group track, can therefore not be marked. See also Grouping tracks.
See also Marking objects