About changing the display options
The Display Options dialog box allows you to customize the look of the GPS positions. You can decide whether to show estimated positions if the GPS signal is lost or change how often a new position is displayed. You can add a point-based or linear trail to show previous positions and better see the path of the GPS device. The positions can be snapped to features. You can also vary the current position or trail symbols by the direction, speed, or altitude of the position.