Editing Markers on the Marker Track
To add a position marker, click Add Marker or use the Draw tool.
To add a cycle marker, click Add Cycle Marker or use the Draw tool.
To select a marker, use the standard techniques.
To resize a cycle marker, select it and drag the handles. You can also do this numerically on the info line.
To move a marker, select it and drag it. You can also edit marker positions on the info line.
To remove a marker, select it and press Delete or use the Erase tool.