Referencing
Upon starting a new solution
or loading a legacy solution without a defined coordinate reference system (CRS),
you are prompted to specify a CRS and display units before beginning your work. After the initial selection of the CRS and unit system, you can use the CRS form in the Referencing button group (Home > Settings) to review your selection. Likewise, you can use the Vertical Datums form to review the vertical datum and the well reference depth for your project.