Sessions & Tracks : Tracks : Track Height : Track Controls and Track Height

Track Controls and Track Height
The Track Height affects how the various track controls appear in the Edit window. For instance, when a track’s height is set to Small, most of the buttons are reduced in size.
 
When the Track Height is set to Mini or Micro, only controls for Record, Solo, and Mute appear, and the menus for Playlist, Track Timebase, Track Height, and Track View are accessed from the same selector.
 
When the Track Height is set to Medium, Large, Jumbo, or Extreme, all track controls are displayed at their full size.