Start and Finish
Start or Finish in the View menu.
These commands scroll the view to either the start or finish marker's position. The view is centered over the marker's position provided its position and the level of magnification permit it to be centered. These commands are especially useful when you need to move a marker to a precise position. For example, you can zoom in 1:1 and move the start marker to an exact position and then use View | Finish to set the finish marker's position.