Use exactly the same settings as in Exercise Calculate HCPV volume for a zone.
Check in Calculate area or volume against depth.
Push Execute
The area / depth curve is saved in the project as {Course B1} / 01_Cultural Curves_area_depth 03UpperCretaceous_area_depth_curve.
Display the area / depth curve by pushing Show curve. The screen is blanked and the area / depth curve is displayed. Instead of using the existing screen window a new window or a new Tab could have been established.
Write the text Area / depth from 2500 to 2800 at top of the window. This is done most easily by clicking a cursor point (in 2D mode) at top left. Then go to the command shell and write: tx2 cur col bla txt "Area / depth from 2500 to 2800"
The area / depth factor is set low to have the area numbers small. The real area numbers must be divided are muliplied by the factor.