The Import Layer option in the File Menu loads a polyline file as spline, overlay, kml and grid files saved on the computer's hard drive or in some external memory. When this option is selected a separate window appears, shown in Figure 4 5 and Figure 4 6 which allows the user to browse to the project file.

Figure 4 5 Import spline layer browsing window.

Figure 4 6 Import KML layer browsing window.