You can create a datum from scratch or modify an existing datum and save it as a new one. To modify a predefined datum, you must assign it a new code before you can save it.
- Code
- Specifies a unique code for the datum.
- Description
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Specifies a description of the datum
- Ellipsoid
-
Select the ellipsoid on which this datum will be based. To edit the ellipsoid you select, you must use the Create Ellipsoid dialog box or the Create Coordinate System Wizard.
- Source
- Enter the data source from which the values for this datum were taken.