private void exportAddressUnitsToGeopaparazziProjectToolStripMenuItem_Click(object sender, EventArgs e)
        {
            var mLyr = ExtFunctions.GetSelectedAddressUnitLayer(theMap);

            if (mLyr == null)
            {
                return;
            }

            var mOPFn = SelectOutputFilename(null, mLyr.LegendText + ".zip", "Compressed archive|*.zip");

            if (mOPFn == null)
            {
                return;
            }

            ExtFunctions.ExportToGeopaparazzi(mLyr, mOPFn, theMap.Projection, KnownCoordinateSystems.Geographic.World.WGS1984);
        }