Select the curve type for the active plot type. For more
information see the Curve type section under
Plot->Layout->Advanced….
If is
checked, the curve belonging to the active
measurement will be displayed with a width different from the other curves.
If curves from several measurements are plotted, this may be useful to emphasize
the active curve as shown below.
Note: If a curve width greater than 1 is used, the plotting speed is decreased. So as a faster alternative to this option is to use Plot->Solo Curve.