[AirRAC][Dev] Added references on constants and simplified the file opening with a given filename string.
[AirRAC][Dev] Added references on constants and simplified the file opening with a given filename string.

airsim/tvlsim,airsim/tvlsim,airsim/tvlsim,airsim/tvlsim,airsim/tvlsim,airsim/tvlsim,airsim/tvlsim,airsim/tvlsim,airsim/tvlsim