Geographic Coordinate System Properties Dialog

Used to display the properties of a geographic coordinate system (GCS). Also, can be used to:

change the Description of the GCS.
change the vertical datum for a GCS whose datum is NAD27, NAD83, HPGN, or their equivalent.

You can access this dialog from the following:

Setting	Description
Coordinate System	Displays the coordinate system information.
Datum	Displays the datum information for the GCS.
Ellipsoid	Displays the ellipsoid information for the GCS.
Coordinate System Modifiers	Displays the vertical datum and local transform type information for the GCS.