The coordinate system enables you to set the type of
projection that you want to apply to your map and the projection properties.
The current projection is displayed in a pane in the Map Builder under the Coordinate
System tab. You can change the projection at anytime.
For example, you may want to display your maps using
the UTM Zone6 coordinate system, which is a transverse mercator projection
centered at 147˚W, with a false easting, and which uses the
GRS80 ellipsoid and North American 1983 (CONUS) datum. These parameters
are available by selecting the Advanced settings
in the Coordinate System pane.
A coordinate system is presented as a projection and
parameters, plus its datum and ellipsoid as shown in the following
figure.