The z-values of the different units can be displayed in the
2D-display. To do this, the user activates the setup panel of the
2D-display with the button 
. The button 
, next to the entry units top opens a menu where
z-value allows the display of the values.
The z-values may also be displayed in the 3D-display. For this, the
user selects in the 3D-control panel the buttons 
,
then 
or 
and finally
. (see also chapter 
)