Choosing the Select option from the import menu and pressing the confirm button 
, the List of files screen will be displayed, as shown in the image below, which allows the user to browse between flash drive folders and file structure.
Guide maps are composed of three files with extensions “.SHP”, “.DBF” and “.SHX” and are organized in the flash drive as defined by the user. The user can browse the flash drive folders to find the correct guide map file to import into the internal memory. The following image shows the guide map list of files in the flash drive. The file data description area shows the distance from the current GNSS coordinates to the map area.
Selecting one of the SHP guide maps from the list and pressing the load button 
, the file will be imported into the IsoView internal memory. While the file is being imported, the Loading screen is displayed, as shown in the image below, containing the number of files to be transferred, counter of files already transferred and the map file name being transferred.
Once the import ends, the Information screen will indicate that the file has been loaded to the internal memory, as shown in the following image.
In the same way as described for the View menu, the user can view the guide map by pressing the view button 
on the file list screen.
