GGU-STABILITY: "Surface points" button

Using this button, the coordinates of the surface points can be specified.

To edit the number of surface points, select "0 surface point(s) to edit". Then enter e.g. 4 as new number and confirm with "OK". You can now enter 4 coordinate pairs (x/y):

Note on surface points:
After leaving the dialog box (via the "Done" button), the coordinate pairs will be sorted according to increasing x-values. This allows simple deleting and inserting of surface points. You can delete a point by entering a "large" x-value and then reducing the number of points by 1. Inserting a point is achieved by increasing the number of points by 1 and then entering the coordinate pair at the end of the table. You can edit superfluous surface points even simpler using the mouse.

In the dialog box, 32 value pairs maximum are displayed at once. If the system has more than 32 value pairs, you can move through the table with the "Forw." and "Back" buttons.

It is even easier to import surface points via the Windows clipboard. For example, if the x/y coordinates of the surface points are available in an Excel table, it is possible to copy the two columns containing the data into the clipboard ("Edit/Copy") and then to paste them into the dialog box shown above by pressing "Import clipboard".