The GPS serial port panel contains the following controls:
The GPS serial port panel
[ ] Simulation - Enables to use and play NMEA logfiles.
NMEA logfiles can be captured in TopoLynx topoXplore on the Logger tab.
dtGpsSim.log - Clickable button to select a logfile. Default filename is dtGpsSim.log that can be played next to the application's main EXE file: topoExp.exe.