Removed NavTech 32 MB card limit. Displays a warning dialog when starting NMEA real-time tracking to tell the user to set the unit's datum to WGS84. Added Browse button for setting the default file location. Added the ability to get properties of Navaids. Unpurchased maps cannot be highlighted.
Changed preferences dialog to display a read-only mag var when auto mag var is chosen.
The mag var displayed is determined by the current center of the map display. Changed to not highlight uninstalled maps, not allow selection of uninstalled maps and filter uninstalled maps out of .mps documents when they are opened. Changed to draw downloadable map regions always, not just when the map tool is selected. Added ability to turn off GPS after transfers. Added ability to remove route calculation data from maps to yield a smaller total data size.