Absolute Marker on HPS 40

Is it possible to display the numerical absolute value of one marker, e. g. marker 1? This would be especially important fpr the ampltude-marker.
Upto now only the marker-differences are shown.
How could I elsewere measure the exact absolue value og e. g. a spike?
The manual says, that “This can be useful when measuring … the amplitude of any given peak.” Does this also refer to the absolute value?

Thanks for your help.
Norbert

If you put one marker at the zero reference, you’ll get the desired behaviour.