Axes settings for 3D graphics is done through the Axes settings dialog, which appears after
selecting Edit/Axes settings option.
There are several fields in this dialog:
Max & Min fields are used for setting Z-axis range. You can enter your own values in the edit
box, or you can change them by pressing up/down arrows on the right side of each edit box.
Auto button sets values in min/max fields to the actual min/max values from the graphics.
Fixed min/max (no auto-scale) check box: select it if you want to prevent automatic changes of
the Z-axis settings when graphics values change.
Show axes check box: select it if you want to see the lines and labels of the coordinate system
Labels: text which appears at X, Y and Z axes if Show axes option is checked