To Edit an Ellipsoid

To Add or Edit an ellipsoid, right-click the user defined library and select the appropriate option.
To add an Ellipsoid, select Edit Ellipsoids.
A list of user defined ellipsoids will be displayed with the properties shown of the selected ellipsoid.
Select Edit to edit an existing ellipsoid, new to add a new one or delete to delete an existing ellipsoid.
When editing an ellipsoid, enter the properties as described. The eccentricity is calculated from the Equatorial and Polar radius. When complete click Ok.