code: public static void setGISCoordinateSystemAsDefault() {
  		String v;
  
  		try {
  			v = System.getProperty("fr.utbm.set.math.defaultCoordinateSystem2D"); //$NON-NLS-1$
  		} catch (Throwable exception) {
  			v = null;
  		}
  		CoordinateSystem2D cs2d = null;
  		if (v != null) {
  			cs2d = CoordinateSystem2D.valueOf(v);
  		}
  		if (cs2d == null) {
  			cs2d = CoordinateSystemConstants.GIS_2D;
  		}
  		CoordinateSystem2D.setDefaultCoordinateSystem(cs2d);
  
  		try {
  			v = System.getProperty("fr.utbm.set.math.defaultCoordinateSystem3D"); //$NON-NLS-1$
  		} catch (Throwable exception) {
  			v = null;
  		}
  		CoordinateSystem3D cs3d = null;
  		if (v != null) {
  			cs3d = CoordinateSystem3D.valueOf(v);
  		}
  		if (cs3d == null) {
  			cs3d = cs2d.toCoordinateSystem3D();
  		}
  		CoordinateSystem2D.setDefaultCoordinateSystem(cs2d);
  	}
docs: Force the GIS coordinate systems to be the default coordinates systems.
  This function sets the default coordinate systems
  to the value specified in the system properties "fr.utbm.set.math.defaultCoordinateSystem2D" and
  "fr.utbm.set.math.defaultCoordinateSystem3D", or
  if not set to {@link CoordinateSystemConstants#GIS_2D} and {@link CoordinateSystemConstants#GIS_3D}.
  
  @since 15.0