This manual page was written for the Debian GNU/Linux distribution because the original program does not have a manual page. Instead, it has documentation in /usr/share/doc/gpsman.
gpsman GPS Manager (GPSMan) is a graphical manager of GPS data that makes possible the preparation, inspection and edition of GPS data in a friendly environment. GPSMan supports communication and real-time logging with both Garmin and Lowrance receivers and accepts real-time logging information in NMEA0183 from any GPS receiver.
To comunicate with the GPS device the user must have granted read/write permissions for the respective port.