Mark saves the current location if you have your location enabled. If the system has not determined the location, you get a small message “Looking for Satellites try again.” Clicking on OK on the Saving Location saves that position and the system will display your distance and location. It doesn’t matter if you are only 2 feet away. While off shopping, it is useful to preserve battery life by exiting Fly Away Home if you are not using it.
Items on the Menu button are there for the curious. It should be remembered pressing Menu stops any GPS searches in progress. Find will not work until the GPS has been re-enabled via the Sat button. Pressing Menu Exit returns to the top bar but nothing is enabled.