The overview line allows you to zoom and to navigate to other sections in the project.
To activate the overview line, click Set up Window Layout on the toolbar and activate Overview.
On the overview line, events and parts are displayed as boxes. A rectangle indicates the section of the project that is displayed in the event display.
To zoom the event display in or out horizontally, resize the rectangle by dragging the edges.
To navigate to another section of the event display, drag the rectangle to the left or to the right, or click in the upper part of the overview.