Lead on research inside navigation folder

[mrfixpl]

https://github.com/jilleb/mib2-toolbox/blob/master/Research/navigation_folder.txt

│   SignalMapper-1.4.cfg                    # ? Something for testing, I guess.
│   SignalMapper-1.4_Org.cfg                # ? Something for testing, I guess.
│   SignalMapper-1.4_TrafficPlayer.cfg      # ? Something for testing, I guess.
│   SignalMapper-1.5.cfg                    # ? Something for testing, I guess.
│   SignalMapper-1.5_Org.cfg                # ? Something for testing, I guess.
│   SignalMapper-1.5_TrafficPlayer.cfg      # ? Something for testing, I guess.

@jilleb, this might be referring to PSD (Predictive Route Data - Prädiktive Streckendaten) v1.4 and v1.5 settings I've seen somewhere in 0x5F and 0xA5 coding/adaptations.