Line Tool
Use the Line tool to draw a straight line.
The Line tool is only available if the Cross section view tool is enabled.
To draw a straight line, activate the tool and click with the left mouse button to define the starting point of the line. Drag the line to the second point and save it by clicking once again. The new line belongs to the group selected in the Select group drop-down list. To modify the object parameters afterwards use the Object Properties dialog.